Backpack

The present invention relates to a backpack used to carry an article, and particularly to a backpack used to conveniently carry a compressed air cylinder.

Generally, the backpack used to back mount (carry) a compressed air cylinder is a plate-shaped backboard equipped with a harness (Harness), a waistband, and a compressed air cylinder fixing belt. After fixing the compressed air cylinder to the compressed air cylinder fixing belt, the compressed air cylinder can be back-mounted by wearing a harness and a waistband on the shoulder and waist.

As shown in FIG. 1, such a conventional backpack consists of a backboard 10 in which a compressed air cylinder 50 is vertically erected and fixed, and a shoulder harness 30 and a waistband 20 having a buckle 24 are mounted. Will be done.

In such a backboard 10, a harness fixing hole 11 in which the upper end of the harness 30 is fixed by the sewing line S is formed at the upper end, and a compressed air cylinder for fixing the compressed air cylinder 50 is formed in the lower middle portion thereof. The fixing belt 40 is fixed, and a back belt 21 having a clip 22 that surrounds the wearer's back and is connected to the waistband 20 is fixed to the lower side.

Here, as shown by the dotted line, the back belt 21 is fixed by inserting an intermediate portion into the back belt insertion holes 11a formed on both sides of the backboard 10, and the harness 30 is attached to both ends on which the clip 22 is fixed. The lower end of the is fixed by the sewing line S.

At this time, as shown in the figure, the lower end of the harness 30 is sewn to the back belt 21 by the sewing line S in the horizontal state, whereby the lower end of the harness 30 and the longitudinal direction of the back belt 21 are parallel in the horizontal state. To maintain.

In this way, since the lower end of the harness 30 is fixed to the back belt 21 by the sewing line S, the harness 30 and the back belt 21 form the same body, and the back board 10 also forms the same body together with the harness 30 and the back belt 21. Make up.

On the other hand, at the center of the lower end of the backboard 10, a support hook 12 for supporting the neck of the compressed air cylinder 50 provided with the air decompression regulator 56 at the lower part is projected, and at the lower end, the backboard 10 and Is manufactured independently, and an "L" -shaped iron support frame 15 that supports the lower part of the backboard 10 is fixedly installed by a bolt fastening method so that the backboard 10 stands up when the harness 30 is worn.

In addition, the backboard 10 has flashing lights 13 that blink to inform the user's position on both sides of the support hook 12, and the flashing lights 13 are powered by the flashing lights 13 at the rear lower end of the flashing lights 13, that is, at the rear lower end of the backboard 10. A battery casing 14 is provided to supply the battery.

In the drawings, reference numeral 55 is an air supply hose connected to the regulator 56 of the compressed air cylinder 50 to supply air to the wearer.

In order to wear a conventional backpack configured in this way, the compressed air cylinder 50 is placed on the backboard 10 in reverse as shown so that the neck rests on the support hook 12. , Fix the compressed air cylinder 50 with the compressed air cylinder fixing belt 40.

Then, after the backboard 10 is erected around the support frame 15, the harness 30 and the waistband 20 may be worn.

However, in such a conventional backpack, if the wearer moves his / her waist from side to side, the same back belt 21 and waistband 20, harness 30 and backboard 10 move at the same time, so he also wears a compressed air cylinder 50. Tilt at the same angle as the person's waist.

Therefore, the center of weight of the compressed air cylinder 50 changes due to such an inclination, which often causes the wearer to have a problem that the compressed air cylinder 50 falls in the inclined direction.

In particular, if the wearer is a fire department worker at a fire station, the compressed air cylinder 50 may fall down due to a change in the weight center, resulting in a large man-made disaster at an emergency site.

Further, in the conventional backpack, since the harness 30 is integrally connected to the back belt 21, when the wearer lifts the arm, the back belt 21 restrains the harness 30 and the harness 30 is chained to the wearer. Since the shoulders are restrained, the wearer also has a problem that the use of the arms becomes very inconvenient due to the binding of the back belt 21 and the harness 30.

At the same time, since the battery casing 14 is provided on the back of the backboard 10, the backboard 10 must be covered in order to replace the battery, which is not only very inconvenient to replace the battery, but also the replacement. There is also the problem that it takes a little longer.

Furthermore, since the support frame 15 on which the backboard 10 stands is formed in a wire shape, not only is there a problem that the support frame 15 is exposed to protrusions such as reinforcing bars when the backpack is worn for activities. Since the support frame 15 is made of iron, there is also the problem of increasing the overall weight of the backpack.

Of course, when a fire department worker wears such a backpack to extinguish a fire, if there is a protrusion on the support frame 15, there is a problem that the fire extinguishing work is delayed to release it, and further, this The bigger problem is that the protrusions make it difficult for fire department personnel to quickly evacuate at the fire station.

Finally, in the conventional backpack, since the support frame 15 is formed independently of the backboard 10, a step of attaching the support frame 15 to the backboard 10 is added, and there is a problem that the backpack manufacturing time is long. ..

Of course, the productivity of the backpack is reduced because the manufacturing time of the backpack is consumed for a long time.

<p> The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is that the backpack waistband and harness operate independently of the backboard, and the waistband and honey are also independent of each other. It is an object of the present invention to provide a backpack that not only operates but also can freely adjust the tilt angle (vertical direction and front-back direction) of the waistband and harness in a worn state.</p><p> Further, an object of the present invention is that since the position of the battery casing is changed, not only the battery can be easily replaced, but also the step of attaching the support frame to be attached to the backboard can be eliminated, and the support can be obtained. It is an object of the present invention to provide a backpack capable of preventing a support frame from being applied to a protrusion by changing the structure of the frame.</p>

<p> In order to achieve such an object, the present invention presents the present invention in a backpack in which a compressed air cylinder fixed to a compressed air cylinder fixing belt is back-mounted when the user wears a harness and a waistband. One end is fixed, the compressed air cylinder fixing belt is fixed on both sides of the middle part, and the backboard with a pair of support hooks that project apart from each other and support the compressed air cylinder at the lower part; Is a harness fixture that is fixed at the other end of the harness, is coupled to the lower back side of the backboard, has both ends rotated up and down around the center, and is formed long in the lateral direction;<u style="single">The harness between the backboard</u><u style="single">Combine with the backboard so that the fixture is placed</u>, Both ends rotate up and down around the center, and the waistband is connected to both sides to surround and protect the user's back with a plate-shaped waist protector; Provided is a backpack comprising a rotating device that is rotatably fixed to a backboard;</p><p> The rotating device is projected and fixed in the middle of the waist protector, and sequentially penetrates the center of the harness fixer and the lower center of the backboard so that the waist protector and the harness fixer rotate. With a hinge shaft that acts as a rotating shaft;<u style="single">The center of the harness fixture and the backboard</u><u style="single">Sequentially penetrated the lower center of</u>Includes a hinge shaft cover that is integrally coupled to the hinge shaft and rotatably secures the hinge shaft onto a backboard; and a fastening member that integrally couples the hinge shaft cover to the hinge shaft. Can be done.</p><p> Therefore, not only does the backpack waistband and harness operate independently of the backboard around the hinge axis, but the waistband and harness also operate independently of each other, allowing the wearer to operate freely without binding the waistband and harness. Can be active.</p><p> The rotating device of the present invention can further include a rotation guiding means for guiding the rotation of the harness fixture. In such a rotation guide means, for example, guide elongated holes are formed on both ends of the rectangular plate of the harness fixture and the backboard described above, and the rod-shaped protrusion members having flanges are passed through the guide elongated holes. By fixing the plate-shaped or annular connecting member to the end of the protruding member, the protruding member can be configured to move in the guide elongated hole when the harness fixing tool is rotated.</p><p> The protrusion member and the coupling member can be a ring nut having a flange formed at one end thereof and a washer-type cover that is coupled to the end portion of the ring nut by a screw, respectively. Further, the protrusion member and the coupling member can each have a head corresponding to a flange, and can be a pin bolt having a threaded portion formed at an end portion and a nut screwed into the end portion of the pin bolt. Unlike this, the protrusion member and the coupling member each have a pin having a flange at one end and a groove in the circumferential direction at the other end, and a snap ring inserted into the groove at the other end of the pin. can do.</p><p> The rotation device of the present invention can further include a rotation angle control means for controlling the rotation angle of the waist protector. Such a rotation angle control means is, for example, integrally fixed to the hinge shaft of the above-mentioned rotating device, and the hinge shaft cover that rotates together with the hinge shaft is formed in a square shape on both sides of the hinge shaft cover. An inclined protrusion that supports the hinge shaft cover is formed on the position backboard while the hinge shaft cover is rotating, so that the rotating waist protector rotates within the inclination angle of the inclined protrusion. Can be done.</p><p> The backpack of the present invention may further include an elevating assembly that slides and elevates the waist protector against the backboard. Such an elevating assembly is projected onto, for example, a waist protector, facing the hinge shaft, with a cap-shaped guide protrusion with a vertical slot in front; in close contact with the back of this guide protrusion. An elevating guide that maintains its condition; it extends in the center of this elevating guide, penetrates the vertical slot of the guide protrusion mentioned above, and has a hinge shaft fixed to the end, which guides when ascending and descending the waist protector. A guide protrusion for guiding the elevating and lowering of the protrusion; and a fixing member for fixing the hinge shaft to the guide protrusion of the elevating guide described above; can be included.</p><p> The elevating assembly may further include tilting means for tilting the hip protector during anterior-posterior motion of the hip protector.</p><p> In such a tilting means, for example, an elevating guide is formed so as to have a triangular shape on the side surface, and a ring member formed corresponding to the elevating guide and having a triangular shape on the side surface is formed on the front surface of the guide protrusion. By extrapolating to the guide protrusion of the elevating guide so as to be in close contact with the above, the elevating guide and the ring member are configured to perform the front-rear seesaw operation while supporting the guide protrusion with the protrusion on the side surface.</p><p> Further, the backpack of the present invention is extrapolated to the guide protrusion of the elevating guide so as to be interposed between the guide protrusion and the elevating guide to prevent friction between the guide protrusion and the elevating guide. Members can be further included.</p>

<p> In the backpack according to the present invention as described above, since the backpack waistband and harness operate independently of the backboard, it is possible to prevent the change in the weight center of the compressed air cylinder, and the waistband and the honey are also independent of each other. It has the effect of greatly improving the activity of the wearer who back-mounted the backpack.</p>

Hereinafter, the backpack according to the present invention will be described with reference to the accompanying drawings. In the following description, the conventional component elements that operate in preparation for the present invention will be described with the same reference numerals as those of the conventional component elements.

FIG. 2 of the attached drawing is a perspective view showing the backpack according to the first embodiment of the present invention, FIG. 3 is an exploded perspective view showing the configuration of the backpack shown in FIG. 2, and FIG. 4 is a front view showing the backboard shown in FIG. Is.

FIG. 5 is a front view showing the harness fixture shown in FIG. 2, FIG. 6 is a front view showing the waist protector shown in FIG. 2, and FIG. 7 shows a part of the waist protector shown in FIG. It is sectional drawing which shows by cutting along the A-A'line.

8 is a front view showing the operation of the waist protector shown in FIG. 2, FIG. 9 is a front view showing the operation of the harness fixture shown in FIG. 2, and FIG. 10 is the use of the backpack according to the first embodiment of the present invention. It is a side view which shows the state.

As shown in FIGS. 2 and 3, in the backpack according to the first embodiment of the present invention, a harness fixing hole 102 through which one end of the harness 30 is fixed is formed at the upper end, and both sides of the axial intermediate portion are formed. A belt fixing hole 103 is formed through which the compressed air cylinder fixing belt 40 is fixed so as to surround and fix the compressed air cylinder 50. At the lower part, the compressed air cylinder fixing belt 40 is projected so as to be separated from each other. Includes a backboard 100 with a pair of support hooks 105 that support a fixed compressed air cylinder 50.

Here, as shown in the figure, the upper end of the backboard 100 on which the harness fixing hole 102 is formed has a triangular shape protruding on both sides, and one harness fixing hole 102 is formed on each side of the protruding triangular shape. Will be done. The reason why the upper end of the backboard 100 is formed in a protruding triangular shape in this way is that the pair of harness fixing holes 102 are widely separated from each other. Therefore, the pair of harnesses 30 fixed to the respective harness fixing holes 102 are arranged so that the upper ends thereof are closer to the shoulders of the wearer who wears the backboard 100.

Without such protrusions on the top edge of the backboard 100, the top edge of the harness 30 is located on the wearer's neck, so if the wearer wears the backboard 100, the top edge of the harness 30 should be on the wearer's neck. It will pressurize into a "V" shape. Then, the upper end of the harness 30 intensively pressurizes the wearer's neck, resulting in severe pain in the neck.

However, if the upper end of the harness 30 is placed on the wearer's shoulder as shown in the figure, each harness 30 pressurizes the wearer's shoulder in the vertical direction, so that the pressing force is dispersed and no pain is felt. ..

As shown in FIGS. 2 and 3, such a backboard 100 is fixedly installed on both sides of the lower portion, and a flashing light 104 for position confirmation that blinks to inform the user's position and a lower end of the backboard 100 are As shown in FIG. 2, it has a predetermined width and extends downward, and the lower end is as shown in FIG.<u style="single">The surface of the backboard 100 to which the compressed air cylinder 50 is attached</u><u style="single">When the direction you are facing is in front of the backboard 100</u>It further includes a plate-shaped protective plate 140 that is bent and protrudes forward of the backboard 100 to protect the end of the compressed air cylinder 50 fixed to the backboard 100 from external impact.

At this time, the protective plate 140 is<u style="single">Protective plate 140</u>The backboard is provided between a pair of reinforcing leaves 142 and a pair of reinforcing leaves 142, which are integrally formed vertically on both sides of the bent portion to reinforce the vertical rigidity of the protective plate 140, and are protected on both sides by the reinforcing leaves 142. It is desirable to have a battery casing 106 with a built-in battery that supplies power to the 100 flashing lights 104.

Then, since the rigidity of the protective plate 140 is ensured by the reinforcing leaves 142, not only can the damage due to buckling be prevented, but also the battery of the flashing light 104 can be incorporated between the reinforcing leaves 142. That is, the battery casing 106 can be provided by utilizing the separated space of the reinforcing leave 142. Of course, the battery casing 106 must be coupled with a cover 106a as shown to prevent the internal battery from coming off, and such a cover 106a is shown for waterproofing. It is desirable to provide a waterproof packing 106b such as.

Then, in the present invention, as shown in FIGS. 2 and 3, the other ends of the harness 30 are fixed to both ends, connected to the lower back side of the backboard 100, and both ends rotate up and down around the center. It further includes a harness fixture 130 that moves and is long laterally formed.

As shown in FIG. 5, such a harness fixture 130 is formed long in the lateral direction, surrounds the user's waist while bending due to its own elastic force, and is rotatably coupled to the backboard 100 in the upward and downward directions. A harness that is connected to the plate-shaped rectangular plate 132 to be formed by hinges H at both ends of the rectangular plate 132, folded while rotating forward and backward, and the other end of the harness 30 is inserted into the end to be fixed. Includes a harness connecting bracket 134 with a fixing hole 134a.

Here, as shown in the drawing, the rectangular plate 132 secures its own elastic force by being formed long in a plate shape, so that both ends of the rectangular plate 132 can be attached to the harness 30 when the user wears the harness 30. The lower end bends in a bow to the rear side of the backboard 100. That is, when the harness 30 is worn, the lower end portion of the harness 30 pulls the harness connecting bracket 134 of the rectangular plate 132, so that the rectangular plate 132 bends. As a result, the harness 30 is more easily worn on the wearer's shoulder, so that the feeling of refusal due to wearing the harness 30 can be minimized.

At this time, it is desirable that the harness fixing hole 134a of the harness connecting bracket 134 is formed long in the horizontal direction as shown in FIGS. 2 and 3, but the harness fixing hole 134a is formed as shown in FIG. It is formed so as to have a downward inclination (β) of 22 ° to 55 ° from the inside to the outside of the connecting bracket 134, and the other end of the harness 30 is tilted by this downward inclination (β) and fixed to the harness connecting bracket 134. It is most desirable to configure it so that.

Then, the other end of the harness 30, that is, the inclination formed at the lower end, makes the harness 30 easier to wear, so that the comfort can be further improved. Of course, the harness 30 is not twisted when worn because the other end (lower end) is inclined, so that the comfort is improved.

However, if the lower end of the harness 30 is formed in a horizontal state (so that the end portion is horizontal) as in the conventional case, the harness 30 will be twisted more severely than the present invention when worn. In this way, if the harness 30 is twisted, the harness 30 interferes with the wearer's flank, and the wearer feels inconvenience. However, the present invention can prevent such a twisting phenomenon, so that inconvenience can be significantly reduced.

Then, as shown in FIGS. 2 and 3, the present invention is coupled to the backboard 100 on the rear side of the harness fixture 130, both ends rotate up and down around the center, and waistbands 20 are on both sides. Includes a plate-shaped waist protector 120 that is combined to surround and protect the user's back.

Here, as shown in FIG. 6, clips 121a as shown in which the waistband 20 is connected are attached to both ends of the waist protector 120, and the clips 121a attach the waist protector 120 as shown in the figure. It is desirable that it is attached to both ends of the connecting band 121 that is fixed through it, but unlike the one shown in the figure, it can also be attached integrally to both ends of the waist protector 120. That is, the clip 121a is attached to the waist protector 120 by the connecting band 121, and the waistband 20 is connected to the clip 121a and is integrated with the waist protector 120.

As shown in FIGS. 6 and 6b, such a waist protector 120 is brought into close contact with the plate-shaped cushion member 124 and one side surface of the cushion member 124 to prevent the cushion member 124 from buckling. A soft flame-retardant cover 122 that surrounds the cushion member 124 and the support plate 126 at the same time, and has an incision 122a formed on one side surface to expose the central portion of the support plate 126. It is desirable that it is configured to include. At this time, it is desirable that the flame-retardant cover 122 is made of a flame-retardant substance or a cloth coated with a flame-retardant material.

Next, the present invention includes a rotating device that rotatably fixes the harness fixing tool 130 and the waist protecting tool 120 (fixed rotatably around the center) to the backboard 100.

Here, for example, the rotating device projects and is fixed in the middle of the waist protector 120 as shown in FIGS. 3 and 7, and sequentially penetrates the center of the harness fixture 130 and the lower center of the backboard 100. Includes a hinge shaft 250 that acts as a rotation shaft so that the waist protector 120 and the harness fixture 130 rotate.

Then, as shown in FIG. 3, the hinge shaft 250 is formed larger than the diameter of the hinge shaft 250, is integrally connected to the hinge shaft 250 in front of the backboard 100, and the hinge shaft 250 is rotatably fixed on the backboard 100. Includes hinge axle cover 255.

It also includes a fastening member 290 as shown in FIG. 3 that connects the hinge shaft cover 255 to the hinge shaft 250 by penetrating the hinge shaft cover 255 and fastening to the hinge shaft 250.

At this time, it goes without saying that the hinge shaft insertion holes 250a and 250b as shown in FIG. 3 must be formed in the backboard 100 and the harness fixture 130 so that the hinge shaft 250 penetrates, respectively. The diameter of the shaft cover 255 is formed to be larger than the diameters of the hinge shaft insertion holes 250a and 250b so that the hinge shaft 250 is applied to the backboard 100 and rotates.

Therefore, the hinge shaft 250 is rotatably fixed to the harness fixture 130 and the backboard 100 by the hinge shaft cover 255 coupled by the fastening member 290, and the harness fixture 130 and the waist protector 120 are such hinges. It is rotated around the shaft 250.

As shown in FIG. 7, such a hinge shaft 250 is fixed to the waist protector 120 by forming a flange at one end and attaching the flange portion to the cushion member 124 of the waist protector 120 with double-sided tape. , Penetrates the support plate 126 in close contact with the cushion member 124, and projects through the incision 122a of the flame retardant cover 122.

Here, reference mark W in FIG. 7 is extrapolated to the hinge shaft 250 and externally attached to the hinge shaft 250 in order to prevent the flange of the hinge shaft 250 from penetrating the support plate 126 and detaching to the outside of the support plate 126. It is a washer interposed between the flange of the waist protector 120 and the support plate 126 of the waist protector 120. Of course, such a washer W can be applied when the flange of the hinge shaft 250 is small, and when the flange of the hinge shaft 250 has a large outer diameter as shown in the washer W, the washer W is omitted. can do.

On the other hand, the present invention can further include a rotation assisting means that guides the rotation of the waist protector 120 and the harness fixture 130 and controls the rotation angle.

In such a rotation assisting means, for example, as shown in FIGS. 3 and 7, elevating protrusions 260 having female screw portions are fixedly installed on both sides of the waist protector 120 in a protruding shape, and the elevating protrusions 260 are respectively installed. By forming vertical arc-shaped first and second guide elongated holes 260a and 260b through which the 260 is inserted on both sides of the lower portion of the backboard 100 and both sides of the harness fixture 130, the elevating protrusions 260 are first and second. If the two guide elongated holes 260a and 260b are passed through in sequence, it is desirable to fix the protrusion cover 265 as shown in FIG. 3 to the elevating protrusion 260 with the fastening screw 290a. At this time, the protrusion cover 265 has an outer diameter larger than the width of the first guide elongated hole 260a.

Therefore, the elevating protrusion 260 moves up and down along the first and second guide elongated holes 260a and 260b when the waist protector 120 and the harness fixture 130 rotate. Since the rotation angle of the waist protector 120 and the harness fixture 130 is controlled by the elevating protrusion 260, it is prevented from rotating 360 degrees around the hinge shaft 250.

Here, the first guide slot 260a formed in the backboard 100 and the second guide slot 260b formed in the harness fixture 130 are hinges penetrating the backboard 100 as shown in FIGS. 4 and 5. It is formed so as to have arc angles (θ, α) of 22 ° to 28 ° and 7 ° to 13 °, respectively, with the axis 250 as the center, and these arc angles (θ, α) are the first and second guides. It is most desirable to configure it so as to determine the length of the elongated holes 260a and 260b.

If the arc angles (θ, α) are formed at 22 ° to 28 ° and 7 ° to 13 ° in this way, the waist protector 120 and the harness fixture 130 are determined by the arc angles (θ, α). It rotates only within the range of a specific angle. Of course, such an arc angle (θ, α) is a range in which the wearer's activity, that is, the movement of the waist and the arm is taken into consideration, so that the wearer can use it without any inconvenience.

Hereinafter, the rotation of the waist protector 120 and the harness fixture 130 by the arc angle (θ, α) will be described in detail with reference to FIGS. 8 and 9, but in the description, the waist protector 120 and the harness fixing will be described. The arc angles (θ, α) of the tool 130 will be described with reference to those formed at 22 ° and 7 °, respectively.

First, as shown in FIG. 8, the waist protector 120 rotates 22 ° around the hinge shaft 250 due to the arc angle (θ) of the first guide slot 260a on the backboard 100 formed at 22 °. To do. On the other hand, as shown in FIG. 9, the harness fixture 130 rotates 7 degrees around the hinge shaft 250 due to the arc angle (α) of the second guide slot 260b, but the backboard formed at 22 °. The arc angle (θ) of the first guide slot 260a on 100 actually causes the harness fixture 130 to rotate an additional 22 ° around the hinge shaft 250. That is, since the harness fixture 130 is configured independently of the waist protector 120, it further rotates by the arc angle (θ) of the first guide elongated hole 260a.

Therefore, the wearer can move his hips by the rotation angle of the hip protector 120, and his shoulders and arms can move much more than that, which gives him a great deal of freedom when backpacking.

On the other hand, the elevating protrusion 260 of the rotation assisting means has a flange formed at one end similarly to the hinge shaft 250 of the rotating device described above, and as shown in FIG. 7, the flange is formed by the double-sided tape to protect the waist 120. It is attached to the cushion member 124 of. Of course, if the flange is attached to the cushion member 124, the elevating protrusion 260 penetrates the support plate 126 and then protrudes through the incision portion 122a of the flame retardant cover 122. At this time, it is desirable that a washer W such as a hinge shaft 250 is interposed in the elevating protrusion 260.

In the description of the backpack configuration as described above, the quotation mark 300 is externally attached to the hinge shaft 250 and the elevating protrusion 260 as shown in FIG. 3, and the waist protector 120, the harness fixture 130, the backboard 100, An anti-friction plate made of plastic or stainless steel, which is interposed between the hinge shaft cover 255 and the protrusion cover 265, respectively.

Reference numeral 55 is an air supply hose that supplies the air of the compressed air cylinder 50 to the wearer, and reference numeral 56 is a regulator 56 that reduces the pressure of the air supplied to the compressed air cylinder 50.

The operation of the backpack according to the first embodiment of the present invention configured in this way will be described as follows with reference to FIGS. 8 to 10 of the attached drawings.

First, as shown in FIG. 10, the user of the backpack according to the first embodiment of the present invention fixes the compressed air cylinder 50 to the backboard 100 with the compressed air cylinder fixing belt 40, and then the protective plate 140 of the backboard 100. Stand up vertically on the backboard 100 and wear the harness 30.

At this time, when the backboard 100 is supported on the ground or a desk, the lower part of the backboard 100 is impacted while hitting the ground or the desk due to the weight of the compressed air cylinder 50. It protects the regulator 56 of the compressed air cylinder 50 from the impact while absorbing the impact.

On the other hand, the wearer attaches the harness 30 to the harness connecting bracket 134 which is attached to the harness connecting tool 130 and can rotate forward and backward, and the harness fixing hole 134a having a downward inclination (β) formed in the harness connecting bracket 134. It can be easily worn.

In this way, when the harness 30 is worn, the wearer surrounds the waist with the waistband 20 connected to the waist protector 120, and then locks the waistband 20 with the buckle 24. Then, the backpack according to the present invention is back-mounted on the back of the user with the compressed air cylinder 50 fixed to the backpack. At this time, even if the heavy compressed air cylinder 50 is back-mounted, the wearer does not irritate the back due to the cushion member 124 of the waist protector 120.

As described above, the backpack waist protector 120 and the harness connector 130 of the backpack are the rotating device and the rotation assisting means, that is, the hinge shaft 250 and the first and first and first, as shown in FIGS. 8 and 9. 2 The elevating protrusions 260 inserted into the long guide holes 260a and 260b rotate independently of each other. Of course, the waist protector 120 and the harness connector 130 operate independently of the backboard 100. In other words, the backboard 100 is not interfered with by either the waist protector 120 or the harness connector 130 even if the waist protector 120 and the harness connector 130 rotate.

Therefore, even if the wearer moves his / her waist and arms, the waist protector 120 and the harness connector 130 move independently of each other, and are not restricted by the restraint of the waistband 20 and the harness 30. Can be done.

In particular, since the backboard 100 is not interfered with by the waist protector 120 and the harness connector 130, the compressed air cylinder 50 fixed to the backboard 100 does not move when the wearer moves his waist and arms. , The weight center of the compressed air cylinder 50 does not change regardless of the movement of the backpack user.

Therefore, in the backpack according to the present invention, the weight center of the compressed air cylinder 50 does not change, so that the wearer can move more freely, and the wearer can change the weight center of the compressed air cylinder 50 as in the conventional case. It is also possible to prevent the problem of falling down.

On the other hand, in such a backpack according to the present invention, when worn, the flashing light 104 provided on the backboard 100 blinks so that the position of the wearer can be confirmed by others. As described above, such a flashing light 104 operates by receiving power from a battery built in the battery casing 106.

At this time, the battery incorporated in the battery casing 106, preparative cover 106a that shields the battery casing 106 by removing Ri can be interchanged to facilitate, in particular, the battery casing 106 is mounted a compressed-air cylinder 50 Since it is installed on the front side of the backboard 100, the battery can be replaced very easily.

That is, if the battery casing 106 is provided on the back surface of the backboard 100 as in the conventional case, it is very inconvenient because the backboard 100 must be overturned and the battery must be replaced. Since it is provided on the front of the backboard 100, it is very convenient to replace the battery.

As described above, in the backpack according to the present invention, since the flashing light 104 blinks, other workers can easily identify the position of the wearer of the backpack, so that the wearer and the surroundings of the wearer can be easily identified. The worker can work while checking the position or condition of the other party in the dangerous area. However, the wearer must check at any time whether the air in the compressed air cylinder 50 mounted on the backboard 100 is exhausted while working while checking the other party.

Of course, the air supply hose 55 connected to the compressed air cylinder 50 is equipped with a whistle-like alarm sound generator (not shown) that notifies the air exhaustion state of the compressed air cylinder 50. For safety, it is desirable to check the remaining amount of air in the compressed air cylinder 50 at any time. Then, while the wearer is working while checking the remaining amount of air, if an alarm is issued from the above-mentioned alarm sound generator, the wearer must quickly move from a dangerous work place to a place with sufficient air. It doesn't become. In addition, the wearer should check the remaining amount of air in the compressed air cylinder 50 at any time during work.

Further, in the backpack according to the present invention, since the protective plate 140 is formed in a plate shape, not only does the protective plate 140 not have a protrusion such as a reinforcing bar when moving while wearing the backpack. It is possible to prevent such protrusions from damaging the regulator 56 of the compressed air cylinder 50.

Then, as shown in FIG. 10, the lower end of the harness 30 is inclined by the harness fixing hole 134a formed in the harness connector 130, so that the activity width of the wearer's shoulder can be further secured.

On the other hand, FIGS. 11 to 22 show the second embodiment of the present invention, and the backpack according to the second embodiment of the present invention will be described below with reference to these drawings. In the following description, the same components as those in the first embodiment will be described with the same reference numerals, and the components having characteristics different from those in the first embodiment will be described with reference numerals of 500 or more.

FIG. 11 is a perspective view showing a backpack according to a second embodiment of the present invention. FIG. 12 is an exploded perspective view of the backpack shown in FIG. FIG. 13 is a front view of the backboard shown in FIG.

FIG. 14 is a front view of the harness fixture shown in FIG. FIG. 15 is a front view of the waist protector shown in FIG. FIG. 16 is a cross-sectional view taken along the line B-B'of FIG. FIG. 17 is an exploded perspective view showing the elevating assembly shown in FIG. FIG. 18 is a partial vertical cross-sectional view showing the connected state of the backboard, the harness fixture, and the waist protector shown in FIG.

Further, FIG. 19 is a usage state diagram of the harness fixture shown in FIG. FIG. 20 is a usage state diagram showing a state of the waist protector shown in FIG. 11 when it is rotated. FIG. 21 is a usage state diagram showing a state of the waist protector shown in FIG. 11 when ascending and descending. FIG. 22 is a usage state diagram showing a state of the waist protector shown in FIG. 11 during front-rear movement.

As shown in FIGS. 11 and 12, in the second embodiment of the present invention, the compressed air cylinder fixing belt 40 and the support hook 105 for fixing the compressed air cylinder are provided in the middle portion and the lower end portion, respectively, and the upper end portion is provided with each. It has a backboard 100 to which one end of the harness 30 is fixed.

Here, on the backboard 100, the harness fixture 130 having the rectangular plate 132 to which the other end of the harness 30 and the waistband 20 are connected, and the waist protector 120 can be rotated by the rotating device according to the first embodiment. Attached to. That is, both the waist protector 120 and the harness fixture 130 have one end fixed to the waist protector 120 and the other end penetrating the rectangular plate 132 and the backboard 100 of the harness fixture 130 and penetrating the other end. Is rotatably attached by a hinge shaft 250 to which the hinge shaft cover 255 is integrally fixed.

Then, in Example 2 of the present invention, as shown in FIG. 11, the harness fixing hole 102 to which the upper end of the harness 30 is fixed is formed so as to be located at the upper end of the backboard 100. That is, both sides of the upper end of the backboard 100 were molded so as to project upward as shown in the figure. Therefore, the pressure applied to the shoulders of the backpack user at the upper end of the harness 30 is distributed to both sides of the backboard 100, but is more clearly distributed than in Example 1 described above.

Such a backpack according to the second embodiment of the present invention includes a rotation guide means for guiding and restricting the rotation of the harness fixture 130, a rotation angle control means for controlling the rotation angle of the waist protector 120, and a rotation angle control means. A major feature that distinguishes it from Example 1 is that it includes an elevating assembly that slides the waist protector 120 up and down with respect to the backboard 100.

The following will be described in detail with reference to the drawings showing the above-mentioned rotation guide means, rotation angle control means, and elevating assembly.

First, for example, as shown in FIG. 10, the rotation guide means forms guide elongated holes 562 on both ends of the rectangular plate 132 of the harness fixture 130 and the backboard 100, and flanges the guide elongated holes 562. By penetrating a rod-shaped protruding member having a flange and fixing a plate-shaped or annular connecting member to the end of the protruding member, the protruding member moves through the guide elongated hole 562 when the harness fixture 130 rotates. It was configured as follows.

At this time, the protruding member and the connecting member can be a ring nut 565 and a washer-shaped cover 568 having a size larger than the guide slot 562 as shown enlarged in the drawing. Such a ring nut 565 is provided with a flange at the rear end. Then, the flange of the ring nut 565 is brought into close contact with the rear side back surface of the rectangular plate 132 of the harness fixture 130. The washer-shaped cover 568 can be welded or soldered to the end of the ring nut 565. However, it is desirable to use a screw 569 as shown to connect it to the ring nut 565. Of course, the screw 569 penetrates the washer-shaped cover 568 and then is screwed with the female screw portion formed on the inner peripheral surface of the ring nut 565.

Further, the protruding member and the connecting member can be a pin bolt 565'and a nut 568' as shown enlarged in the drawing. The head portion of such a pin bolt 565'is in close contact with the back surface of the rectangular plate 132 of the harness fixture 130. The nut 568'screws with the threaded portion formed on the end side of the pin bolt 565'.

In contrast, the protruding and coupling members are a pin (not shown) with a flange at the rear end and a snap ring (not shown) that is extrapolated and fixed to the end of the pin, such as the ring nut 565. Can be done. Of course, a groove into which the snap ring is inserted must be formed at the end of the pin along the circumferential direction.

In this way, if the rotation guide means is configured by the pin bolt 565'and the nut 568', or the pin having the flange and the snap ring, the screw portion 569 penetrating the washer-shaped cover 568 can be omitted. Therefore, the manufacturing man-hours and the manufacturing unit price can be reduced.

However, this specification will be described using a rotation guide means including a washer-shaped cover 568 fixed by a ring nut 565 and a threaded portion 569. At this time, the ring nut 565 of the rotation guide means is fixed by the flange at the rear end and the washer-shaped cover 568 fixed to the front while being hooked on the harness fixture 130 and the backboard 100.

Therefore, the ring nut 565 moves up and down along the guide slot 562 when the harness fixture 130 rotates. Of course, the elevating range of the ring nut 565 is determined by the length of the guide slot 562.

Such a guide slot 562 is formed in an arc shape centered on the hinge shaft 250, and as shown in FIGS. 13 and 14, the arc angle (θ, α) of 3 ° to 28 ° with respect to the hinge shaft 250 is formed. ) Is desirable.

In particular, the arc angle (θ) is determined within the range of 22 ° to 28 ° for the guide slot 562 on the backboard 100, and 3 ° to 13 for the guide slot 562 of the harness fixture 130. It is desirable to determine the inscribed angle (α) within the range of °.

In Example 2 of the present invention as described above, the arc angles (θ, α) with respect to the guide elongated holes 562 formed in the backboard 100 and the harness fixture 130 are set to 22 ° and 4 °, respectively. Thus, applying the inscribed angles (θ, α), the ring nut 565 moves up and down 22 ° along the guide slot 562 on the backboard 100 and further along the guide slot 562 on the harness fixture 130. 4 degrees up and down. That is, the ring nut 565 moves up and down a total of 26 °.

The reason why the ring nut 565 is configured to move up and down in the range of 26 ° in this way is that this angle range is the most suitable angle for the activity width of the wearer's shoulder.

On the other hand, in the rotation guide means as described above, not only the guide elongated hole 562 is located on the end side of the rectangular plate 132 of the harness fixture 130, but also the ring nut 565 is independent of the waist protector 120. Since the backboard according to the second embodiment of the present invention is formed, the end portion of the rectangular plate 132 of the harness fixture 130 is not twisted even if the harness 30 is tense when worn.

At this time, the first reason that the end portion of the rectangular plate 132 is not twisted is that the ring nut 565 is separated from the waist protector 120 and does not restrain the rectangular plate 132.

The second reason is that the rotation guide means composed of the guide elongated hole 562 and the ring nut 565 is provided on the end side of the rectangular plate 132, so that the flange of the ring nut 565 becomes the rectangular plate 132. This is because it supports a part of the end flat.

On the other hand, it is desirable to attach the reinforcing plate 500 as shown in FIG. 14 to the end of the rectangular plate 132 of the harness fixture 130. As shown in the figure, the reinforcing plate 500 is attached so as to reinforce the guide elongated hole 562 of the rectangular plate 132.

That is, as shown in the figure, the reinforcing plate 500 adheres to the end portion of the rectangular plate 132 so as to overlap the guide elongated holes 562. Of course, the reinforcing plate 500 must be formed with the same elongated hole as the guide elongated hole 562 so that the ring nut 565 described above can penetrate.

By attaching the reinforcing plate 500 to the end of the rectangular plate 132 in this way, the rectangular plate 132 can reliably resist the external force transmitted by the harness 30. Therefore, the twisting of the rectangular plate 132 can be prevented more positively.

Next, the rotation angle control means, for example, as shown in FIGS. 12 and 13, the hinge shaft cover 255, which is integrally fixed to the other end of the hinge shaft 250 and rotates together with the hinge shaft 250, is formed into a square shape. A rotating waist protector formed by forming inclined protrusions 610 that support the hinge shaft cover 255 during rotation of the hinge shaft cover 255 on the backboard 100 located on both sides of the hinge shaft cover 255. The 120 is configured to rotate within the tilt angle (r) of the tilt protrusion 610. That is, the inclination angle (r) of the inclination projection 610 is the rotation angle of the waist protector 120 but also the rotation angle of the rotation shaft 250. Such a tilt angle (r) of the tilt protrusion 610 is shown in FIG.

At this time, as shown in the figure, the inclined protrusions 610 are formed on both sides of the hinge shaft insertion hole 250a formed in the backboard 100, and are triangular so that one apex makes point contact with both sides of the hinge shaft cover 255. It is formed.

Of course, the inclined protrusion 610 can be formed on the upper and lower end sides of the hinge shaft insertion hole 250a, as shown in the drawing. In this case, the hinge shaft cover 255 must be formed to have a horizontal length, as shown.

Here, the hinge shaft cover 255 is configured to rotate at an angle of 25 ° to 42 ° about the hinge shaft 250 due to the inclination of the inclined protrusion 610, but rotates within an angle of 30 °. It is desirable to configure it in. For this purpose, the tilt angle of the tilt protrusion 610 must be specially designed in consideration of the rotation angle of the hinge shaft cover 255.

By forming the hinge shaft cover 255 and the inclined protrusion 610 in this way, the rotation angle of the hinge shaft 250 is limited to the range of 30 °. That is, when the hinge shaft 250 rotates, the hinge shaft cover 255 also rotates, and if the hinge shaft cover 255 rotates at an angle of 30 °, the inclined surfaces of the inclined protrusions 610 become both side surfaces of the hinge shaft cover 255. The rotation of the hinge shaft cover 255 is stopped while supporting the hinge shaft cover 255. Therefore, the hinge shaft 250 rotates only within an angle of 30 ° due to the interruption of the rotation of the hinge shaft cover 255.

Of course, the rotation angle of the waist protector 120 is determined by the rotation angle of the hinge shaft 250. That is. The waist protector 120 rotates at an angle of 30 ° around the hinge shaft 250. Such a rotation angle of 30 ° is an angle that fully considers the waist activity width of the wearer. In other words, the backpack wearer of the present invention does not feel any inconvenience in activity because the waist protector 120 rotates at a rotation angle of 30 °.

Next, the elevating assembly includes, for example, a cap-shaped guide protrusion 710 that bulges forward, an elevating guide 720, a guide protrusion 722, and a fixing member 724, as shown in FIGS. 15-18. Become. Such an elevating assembly is mounted between the hinge shaft 250 of the rotating device and the waist protector 120, as shown.

To explain the components of the elevating assembly in more detail with reference to FIG. 17, first, the guide protrusion 710 is projected onto the waist protector 120 so as to face the hinge shaft 250.<u style="single">In addition, hanging</u><u style="single">A straight hole 712 is formed.</u>At this time, it is desirable that the guide protrusion 710 is formed on the support plate 126 built in the flame retardant cover 122 of the waist protector 120.

Of course, the guide protrusion 710 is integrally formed at the time of injection of the support plate 126. However, unlike this, it can be manufactured separately from the support plate 126 and attached to the support plate 126 with bolts or rivets. Since such a case is usually known, the description thereof will be omitted. Such a guide protrusion 710 moves up and down integrally with the waist protector 120 when the waist protector 120 moves up and down.

Next, the elevating guide 720 is formed to be larger than the width of the vertical elongated hole 712 formed in the guide protrusion 710, and is brought into close contact with the back surface of the guide protrusion 710 as shown in the figure.

As shown in the figure, the guide protrusion 722 extends from the center of the elevating guide 720 and projects forward. As shown in the figure, such a guide protrusion 722 penetrates the vertical elongated hole 712 of the guide protrusion 710, and the hinge shaft 250 is connected to the end portion. Therefore, when the waist protector 120 and the guide protrusion 710 are moved up and down, the guide protrusion 722 guides the guide protrusion 710 up and down by the vertical elongated hole 712.

At this time, the elevating guide 720 can be a flange of the guide protrusion 722. That is, the flange of the guide protrusion 722 is brought into close contact with the back surface of the guide protrusion 710. The shape of such a flange can be variously configured such as an original plate shape and a square plate shape.

The guide protrusion 722 of the elevating guide 720 and the hinge shaft 250 need to be configured to be splined. For this configuration, a groove 722'as shown in FIG. 17 is formed on the back surface of the hinge shaft 250. The hinge shaft 250 is then spline-coupled to the guide protrusion 722 by the groove 722', which prevents it from sliding on the surface of the guide protrusion 722. Of course, the groove 722'must be formed so as to correspond to the end of the guide protrusion 722.

Finally, the fixing member 724 can be a long formed screw, as shown. Such a fixing member 724 continuously penetrates the elevating guide 720 and the guide protrusion 722 of the elevating guide 720 and is screwed with the hinge shaft 250 to integrate the hinge shaft 250 and the guide protrusion 722. That is, the fixing member 724 connects the guide protrusion 722 to the rotating device. The coupling state of the guide protrusion 710, the elevating guide 720, and the fixing member 724 is shown in detail in FIG.

As shown in Figure 16.<u style="single">The guide protrusion 710 faces the backboard 100</u><u style="single">Face towards backboard 100</u>To have a bulging round R<u style="single">Guide protrusion</u><u style="single">710</u>By forming the waist protector 120, it is desirable to configure the waist protector 120 so as to move up and down while drawing a round R around the guide protrusion 722 of the lift guide 720. In this way, if the guide protrusion 710 is configured to move up and down while drawing a round R, the waist protector 120 can move up and down smoothly. Of course, the elevating guide protrusion 710 moves up and down while being guided by the guide protrusion 722 penetrating the vertical elongated hole 712.

On the other hand, the elevating assembly can further include tilting means for tilting the waist protector 120 when moving forward and backward of the waist protector 120.

Such tilting means is formed, for example, as shown in FIGS. 16 to 18, so that the elevating guide 720 has a triangular shape on the side surface, is formed corresponding to the elevating guide 720, and is formed on the side surface. By extrapolating the triangular ring member 740 to the guide protrusion 722 of the elevating guide 720 so as to be in close contact with the front surface of the guide protrusion 710, the elevating guide 720 and the ring member 740 are guided by the protrusion on the side surface. It is configured to perform a seesaw operation forward and backward while supporting the protrusion 710. The seesaw operation of the elevating guide 720 and the ring member 740 is shown enlarged in FIG.

Here, the guide protrusion 722 of the elevating guide 720 must be formed long as shown so that the ring member 740 can be extrapolated. That is, the length of the guide protrusion 722 is extended by the thickness on the side surface of the ring member 740 to form the ring member 740. Of course, if the elevating assembly does not include tilting means, the ring member 740 is omitted, so that the length of the guide protrusion 722 can be shortened.

Further, the elevating assembly can be configured to further include the friction prevention member 760 as shown in FIGS. 16 to 18 in addition to the tilting means described above.

Such an anti-friction member 760 is interposed between the guide protrusion 710 and the elevating guide 720 to prevent contact between the guide protrusion 710 and the elevating guide 720 when the elevating guide 720 is raised and lowered. Therefore, it is desirable that the friction prevention member 760 is formed in an annular shape as shown in FIG. In this embodiment, the friction prevention member 760 is externally inserted and fixed on the guide protrusion 722 located between the guide protrusion 710 and the elevating guide 720.

At this time, as shown in the figure, the friction prevention member 760 is formed in a zigzag shape on the side surface or the cross section so that the friction prevention member 760 repels the elevating guide 720 with respect to the guide protrusion 710. It is desirable to do. That is, the friction prevention member 760 can be an annular leaf spring.

In this way, if the friction prevention member 760 is composed of leaf springs, the friction prevention member 760 returns to its original position by the elastic force of the seesaw operating elevating guide 720 when the waist protector 120 moves forward and backward. Let me. Here, the enlarged view of FIG. 16 shows a state in which the lower end of the friction prevention member 760 is compressed according to the seesaw operation of the upper end of the elevating guide 720, and the non-enlarged view shows the friction prevention. The elastic force of the member 760 indicates that the elevating guide 720 has returned to its original position.

On the other hand, as shown in FIG. 18, the rectangular plate 132 of the harness fixture 130 and the friction prevention plate 300 are sequentially externally inserted into the hinge shaft 250 fixed to the guide protrusion 722 of the elevating guide 720 by the fixing member 724. Then, the hinge shaft 250 penetrates the hinge shaft insertion hole 250a of the backboard 100 and is connected to the hinge shaft cover 255 by the fastening screw 290.

Therefore, with reference to FIG. 16 based on such FIG. 18, it is possible to easily understand the operation of the elevating assembly applied to the present invention and the tilting means by the elevating assembly.

Here, if the operation of the elevating assembly and the tilting means is described with reference to FIG. 16, as shown in FIG. 16, the hinge shaft 250 is used when the waist protector 120 is rotated by the movement of the wearer. It rotates around the axis (rotates in the circumferential direction) together with the waist protector 120.

Then, when the waist protector 120 moves up and down, the guide protrusion 710 moves up and down along the vertical elongated hole 712 with the guide protrusion 722 of the elevating guide 720 as an axis by the waist protector 120.

When the waist protector 120 moves forward and backward, the elevating guide 720 and the ring member 740 perform a seesaw operation so that the waist protector 120 tilts forward and backward. At this time, the friction prevention member 760 secures the elastic force while being crushed, and when the tilted waist protector 120 returns to the original position, the elevating guide 720 is pressed to the original position while being restored by the secured elastic force. Return to.

In the backpack according to the second embodiment of the present invention configured as described above, when the wearer moves the shoulder, the harness 30 rotates the harness fixture 130 around the hinge shaft 250 as shown in FIG. Of course, the rotation angle of the harness fixture 130 is limited by the guide slot 562 formed in the rectangular plate 132 and the backboard 100 and the ring nut 565 moving along the guide slot 562.

Further, in the backpack according to the present invention, when the wearer bends the waist to both sides, the waist protector 120 rotates about the hinge shaft 250 as shown in FIG. At this time, the hinge shaft 250 is rotated within a range of 30 ° by the square hinge shaft cover 255 connected to the end and the inclined protrusions 610 formed on both sides of the hinge shaft insertion hole 250a of the backboard 100. r) is controlled. Of course, the waist protector 120 is rotated by the hinge shaft 250 within the same rotation angle (r) as the hinge shaft 250.

Further, when the wearer bends his / her waist, as shown in FIGS. 21 and 22, the waist protector 120 tilts while moving up and down. At this time, when the waist protector 120 is raised and lowered, the guide protrusion 710 is raised and lowered by the guidance of the guide protrusion 722 formed on the raising and lowering guide 720. Then, when the waist protector 120 is tilted, the elevating guide 720 and the ring member 740 perform a seesaw operation while compressing or relaxing the friction prevention member 760. In this way, when the waist protector 120 moves up and down and tilts, the friction prevention member 760 prevents friction between the lift guide 720 and the guide protrusion 710.

On the other hand, the backpack according to the first and second embodiments of the present invention can also be applied to a general bag. In such a case, the backboard 100 may be used as the backrest of the bag. That is, the backpack of the present invention is not limited to fixing a compressed air cylinder.

The above-described embodiment merely describes a desirable embodiment of the present invention, and the scope of application of the present invention is not limited to such an embodiment, and can be appropriately changed within the same ideological category. is there.

Therefore, each component, shape, structure, etc. shown in the examples of the present invention can be modified and implemented, and it is natural that such a modification belongs to the appended claims of the present invention. It is a thing.

In the backpack according to the present invention as described above, since the backpack waistband and harness operate independently of the backboard, it is possible to prevent the change in the weight center of the compressed air cylinder, and the waistband and the honey are also independent of each other. It has the effect of greatly improving the activity of the wearer who back-mounted the backpack.

In addition, when the ring nut is configured to be separate from the waist protector, the guide slot is formed on the end side of the rectangular plate of the harness fixture to prevent both ends of the rectangular plate from being twisted. Not only that, both sides of the rectangular plate can be separated from the waist protector to maintain the tension of the harness continuously, which has the effect of improving the comfort of the backpack.

In addition, the waist protector can not only rotate around the hinge axis, but also can move up and down and forward and backward by the guide protrusion, the guide protrusion of the elevating guide, and the ring member. Since the comfort can be further improved, there is also an effect that the range of activity of the wearer can be greatly expanded.

Furthermore, since the protective plate at the lower end of the backboard is formed in the shape of a plate material, it also has the effect of preventing protrusions from being caught on the protective plate, and when molding the backboard, the protective plate can be integrally molded. Not only does it have the effect of shortening the manufacturing time of the backpack, but it also has the effect of improving convenience by providing a battery casing on the front of the backboard so that the battery can be replaced easily and quickly. is there.

<figref num="1">FIG. 1 is a perspective view showing a general backpack.</figref><figref num="2">FIG. 2 is a perspective view showing a backpack according to a first embodiment of the present invention.</figref><figref num="3">FIG. 3 is an exploded perspective view showing the configuration of the backpack shown in FIG.</figref><figref num="4">FIG. 4 is a front view showing the backboard shown in FIG.</figref><figref num="5">FIG. 5 is a front view showing the harness fixture shown in FIG.</figref><figref num="6">FIG. 6 is a front view showing the waist protector shown in FIG.</figref><figref num="7">FIG. 7 is a cross-sectional view showing a part of the waist protector shown in FIG. 2 cut along the A-A'line shown in FIG.</figref><figref num="8">FIG. 8 is a front view showing the operation of the waist protector shown in FIG.</figref><figref num="9">FIG. 9 is a front view showing the operation of the harness fixture shown in FIG.</figref><figref num="10">FIG. 10 is a side view showing a usage state of the backpack according to the first embodiment of the present invention.</figref><figref num="11">FIG. 11 is a perspective view showing a backpack according to a second embodiment of the present invention.</figref><figref num="12">FIG. 12 is an exploded perspective view of the backpack shown in FIG.</figref><figref num="13">FIG. 13 is a front view of the backboard shown in FIG.</figref><figref num="14">FIG. 14 is a front view of the harness fixture shown in FIG.</figref><figref num="15">FIG. 15 is a front view of the waist protector shown in FIG.</figref><figref num="16">FIG. 16 is a cross-sectional view taken along the line B-B'of FIG.</figref><figref num="17">FIG. 17 is an exploded perspective view showing the elevating assembly shown in FIG.</figref><figref num="18">FIG. 18 is a partial vertical cross-sectional view showing the connected state of the backboard, the harness fixture, and the waist protector shown in FIG.</figref><figref num="19">FIG. 19 is a usage state diagram of the harness fixture shown in FIG.</figref><figref num="20">FIG. 20 is a usage state diagram showing a state of the waist protector shown in FIG. 11 when it is rotated.</figref><figref num="21">FIG. 21 is a usage state diagram showing a state of the waist protector shown in FIG. 11 when ascending and descending.</figref><figref num="22">FIG. 22 is a usage state diagram showing a state of the waist protector shown in FIG. 11 during front-rear movement.</figref>

Code description

10, 100 backboard 11, 102, 134a Harness fixing holes 11a Back belt insertion hole 12, 105 support hook 13,104 flashing lights 14,106 Battery casing 106a cover 106b Waterproof packing 15 Support frame 20 waistband 21 Back belt 22, 121a clips 24 buckle 30 Shoulder harness 40 Fixed belt 50 Compressed air cylinder 55 Air supply hose 56 Air decompression regulator 103 Belt fixing hole 120 waist protector 121 connecting belt 122 Flame retardant cover 124 Cushion part 126 Support plate 130 Harness Fixture 132 rectangular plate 134 Harness connecting bracket 140 Protective plate 142 Reinforced leave 250 hinge shaft 250a, 250b Hinge shaft insertion hole 255 hinge shaft cover 260 Lifting protrusion 260a First guide slot 260b Second guide slot 265 Protrusion cover 290 Fastening member 290a Fastening screw 300 anti-friction plate 500 reinforcement plate 562 Guide slot 565 ring nut 565' Pin bolt 568 Washer type cover 568'nut 569 Screw part 610 Inclined protrusion 710 Guide protrusion 712 Vertical slot 720 Lifting Guide 722 Guide protrusion 722'groove 724 Fixing member 740 Ring member 760 Anti-friction member H hinge S sewing line W Washer θ Inscribed angle of the first slot Inscribed angle of α second slot Beta harness connecting bracket downward tilt