Adjusting type breathing apparatus

Technical field of an adjustable respirator

[0001] The present invention relates to an adjustable respirator, and specifically relates to a connection structure of an oxygen cylinder and a back frame of the adjustable respirator.

Background technique

[0002] Air-conditioning respirator is a breathing device used by rescuers to prevent inhalation of harmful substances or use in an oxygen-deficient environment during fire fighting or rescue. Air-conditioning respirators are equipped with oxygen cylinders for rescuers to work normally. Breathing. At present, the structure of general air-conditioning respirators includes oxygen cylinders, connecting belts, straps, back frames, vent pipes, and masks. The back frames connect and fasten the oxygen cylinders through the connection belts. The back straps are generally installed on both sides of the back frame. For the harness, one end of the snorkel is connected with the oxygen cylinder, and the other end of the snorkel is connected with the mask. In the above structure, the installation of the back frame and the oxygen cylinder through the connecting belt may sometimes be unstable, causing the oxygen cylinder to shake significantly. It may even detach, and there is a safety hazard in use. In addition, the distance between the strap and the back frame is not adjustable, and the best comfortable position cannot be adjusted according to different users.

Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the problem solved by the present invention is to provide an adjustable respirator with an adjustable distance between the strap and the back frame, and the back frame and the oxygen cylinder are firmly connected.

[0004] In order to solve the above problems, the technical solutions adopted by the present invention are as follows: An adjustable respirator, including an oxygen cylinder, a back frame, a vent tube, a harness, a rotating buckle structure, and an adjustment mechanism; the upper end of the oxygen cylinder Connecting the vent pipe; the rotating buckle structure includes a connecting plate, a sliding rotating block, a locking rod, a telescopic column, a squeeze spring, and a positioning member; the connecting plate is installed on one side of the oxygen cylinder; the connecting A sliding rotating block is installed in the middle of the outer side of the board; a locking rod is installed at the upper end of the sliding rotating block; a sliding slot is provided from top to bottom in the middle of the outer side of the back frame; the upper end of the sliding slot extends to The upper edge of the back frame, the lower end extends to the bottom of the middle of the back frame; the outer side of the sliding card slot of the back frame is provided with an insertion hole; the lower inner side and the bottom of the sliding card slot are connected with a locking groove The bottom of the lock groove is installed with a positioning piece; the sliding rotary block on the outside of the connecting plate is slidably inserted from the upper end of the sliding slot of the back frame, and the sliding rotary block is slidably inserted into the lower end of the sliding slot; the connection One side of the sliding and rotating block of the plate is provided with a connecting groove; an extrusion spring is installed in the connecting groove; a telescopic column is inserted into the connecting groove; the extrusion spring is elastically squeezed in the telescopic column The outer end of the telescopic column extends to the outside of the connecting groove and abuts on the other side of the outer side of the sliding slot of the back frame; the sliding rotating block rotates 180 degrees inside the lower end of the sliding slot And drive the connecting plate and the locking rod to rotate; the connecting plate drives the telescopic column to abut and rotate to slide from the other side of the sliding slot of the back frame to the outer side of the sliding slot of the back frame, the telescopic column The squeeze spring is pushed and inserted into the insertion hole on the outer side of the sliding slot of the back frame; the lock lever rotates downward from the upper end of the sliding rotary block, and locks after passing through the lock slot. The buckle is connected to the positioning member at the bottom of the lock groove; the adjustment mechanism includes a positioning plate, a sliding plate, and an adjusting screw; both ends of the back frame are respectively installed with a positioning plate; the outer end of the positioning plate and The inner ends are respectively provided with an adjusting groove and a floating groove; a threaded channel is provided between the adjusting groove and the floating groove; a sliding plate is slidably installed in the floating groove; one end of the sliding plate is slidably inserted into the floating groove In the groove, the other end of the sliding plate extends to the outside of the floating groove; the threaded channel is respectively threaded with an adjusting screw; the outer end of the adjusting screw

It is located in the adjusting groove, and the inner end is located in the floating groove; the inner end of the adjusting screw is rotated and clamped with one end of the sliding plate; the other end of the sliding plate is respectively connected with a strap.

[0005] Further, the outer end of the connecting groove of the connecting plate is provided with a ring-shaped limiting tooth; the outer side of the middle of the telescopic column is provided with a ring-shaped telescopic groove; The groove is slidably clamped on the annular limiting tooth of the connecting groove.

[0006] Further, the depth of the locking groove is less than the depth of the sliding slot.

[0007] Further, the cross section of the sliding slot and the sliding rotary block are both T-shaped structures; the sliding rotary block is a stepped cylinder.

[0008] Further, the locking rod is in an L-shaped structure; the positioning member is in an inverted U-shaped structure; the outer end of the locking rod is rotatably locked on the positioning member.

[0009] Further, the outer end surface of the telescopic column is provided with a wear-resistant coating; the wear-resistant coating is made of polytetrafluoroethylene.

[0010] Further, it also includes an isolation layer; the isolation layer is installed between the sliding plates; the isolation layer is made of elastic soft material.

[0011] Further, the back frame is a U-shaped structure; the back frame is made of plastic material.

[0012] The beneficial effects of the present invention

1. The present invention increases the structure of the adjustable distance between the strap and the back frame, and adds an adjustment mechanism. The adjustment screw is controlled by rotating in the adjustment slot of the positioning plate, so that the adjustment screw can drive the sliding plate on the positioning plate when the adjustment screw rotates. The telescopic movement is carried out in the floating groove, thereby changing the moving distance of the sliding plate in the floating groove, thereby changing the distribution distance between the strap and the back frame, so as to achieve the best use effect.

[0013] 2. The present invention changes the connection between the traditional oxygen cylinder and the back frame, and improves the stability and installation efficiency of the connection; the present invention achieves a triple connection structure to ensure stability. First of all, the present invention is in the middle of the outer side of the back frame. There is a sliding card slot from top to bottom, a sliding rotating block is installed in the middle of the outer side of the connecting plate, and the sliding rotating block on the outside of the connecting plate is slidingly inserted from the upper end of the sliding card slot of the back frame, and the sliding rotating block is slidably inserted into the sliding card slot The lower end of the sliding card is thus formed as the first sliding clip; then the sliding rotary block is rotated 180 degrees inside the lower end of the sliding card slot and drives the connecting plate to rotate, and the connecting plate drives the telescopic column from the sliding card slot of the back frame The other side abuts and slides to one side of the sliding slot of the back frame, and at the same time, the locking lever rotates downward from the upper end of the sliding rotating block to the bottom of the locking slot, thus forming the second rotation direction; and finally; , The telescopic column is inserted into the insertion hole on the side of the sliding slot of the back frame through the squeezing of the squeeze spring, and the outer end of the locking lever is locked to the positioning member at the bottom of the locking slot, so The formation of the third level of insertion and clamping positioning greatly improves the connection stability of the oxygen cylinder and the back frame; and the entire installation process is a sliding and rotating process, which is quick and convenient to install.

[0014] 3. The present invention uses a 180-degree rotation to transform the two forms of locking methods. First, the sliding connection between the sliding rotary block of the connecting plate and the sliding slot of the back frame occurs at 180-degree rotation. Previously, the insertion of the telescopic column and the insertion hole and the locking of the locking rod and the positioning member occurred after a 180-degree rotation. The rotation separated the two front and rear connection forms, which greatly increased the structure. Resistance to multiple deformation, so even when the telescopic column is inserted into the plug hole and the lock lever is separated from the lock of the positioning member, it must be rotated by 180 degrees after the sliding rotary block of the connecting plate and the back frame The sliding slot can be slid and separated, so the structure of the present invention is more stable.

[0015] 4. In the present invention, an insertion hole is provided on the outer side of the sliding slot of the back frame, one side of the sliding rotary block of the connecting plate is provided with a connecting groove, and the outer end of the telescopic column of the present invention extends to the connecting groove And abut against the other side of the sliding slot of the back frame

On one side, so that the insertion holes on the back frame and the telescopic columns on the connecting plate are distributed on both sides, so that when the connecting plate rotates, the correspondence on the same side is realized and the connection is realized.

Description of the drawings

[0016] FIG. 1 is a schematic top view of the structure of the present invention.

[0017] FIG. 2 is a schematic cross-sectional view of the back frame.

[0018] FIG. 3 is a schematic structural view of the sliding rotary block just inserted into the sliding slot of the back frame.

[0019] FIG. 4 is a schematic structural view of the sliding rotation block rotating inside the lower end of the sliding slot of the back frame.

[0020] FIG. 5 is a schematic structural view of the sliding rotary block after being rotated 180 degrees inside the lower end of the sliding slot of the back frame.

[0021] FIG. 6 is a schematic side view of the connecting rod and the back plate.

[0022] FIG. 7 is a schematic side view of the structure of the connecting rod and the back plate after rotating 180 in FIG. 6.

[0023] FIG. 8 is an enlarged schematic diagram of A in FIG. 6.

[0024] FIG. 9 is an enlarged schematic view of B in FIG. 7.

[0025] FIG. 10 is a schematic side view of the sliding rotary block just inserted into the sliding slot of the back frame.

[0026] FIG. 11 is a schematic side view of the structure of the sliding slot of the sliding rotary block and the back frame after rotating 180.

[0027] FIG. 12 is a schematic diagram of a partially enlarged structure of the adjustment mechanism of the present invention.

Detailed ways

[0028] The content of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] As shown in FIGS. 1 to 12, an adjustable respirator includes an oxygen cylinder 1, a back frame 2, a vent tube 4, a strap 3, a rotating buckle structure 5, and an adjustment mechanism 7. The upper end of the oxygen cylinder 1 is connected to the vent pipe 4; the rotating buckle structure 5 includes a connecting plate 51, a sliding rotating block 52, a locking rod 55, a telescopic column 54, a compression spring 53, and a positioning member 56; The connecting plate 51 is installed on one side of the oxygen cylinder 1; the outer side of the connecting plate 51 is installed with a sliding rotating block 52 in the middle; the upper end of the sliding rotating block 52 is installed with a locking rod 55; the back frame 2 The outer middle of the outer side is provided with a sliding slot 21 from top to bottom; the upper end of the sliding slot 21 extends to the upper edge of the back frame, and the lower end extends to the bottom of the middle of the back frame; the outer part of the sliding slot 21 of the back frame 2 One side is provided with an insertion hole 23; the lower inner side and bottom of the sliding slot 21 are connected with a locking groove 22; the bottom of the locking groove 22 is provided with a positioning member 56; the connecting plate The sliding and rotating block 52 on the outside of 51 is slid and inserted from the upper end of the sliding slot 21 of the back frame 2, and the sliding and rotating block 52 is slidably inserted into the lower end of the sliding slot 21; one side of the sliding and rotating block 52 of the connecting plate 51 is provided The connecting groove 511; the connecting groove 511 is installed with an extrusion spring 53; a telescopic column 54 is inserted into the connecting groove 511; the compression spring 53 is elastically squeezed on the inner end of the telescopic column 54; The outer end of the telescopic column 54 Extending to the outside of the connecting groove 511 and abutting on the other side of the outside of the sliding slot 21 of the back frame 2; the sliding rotary block 52 rotates 180 degrees inside the lower end of the sliding slot 21 and drives the connecting plate 51 And the lock lever 55 rotate; the connecting plate 51 drives the telescopic column 54 from the other side of the sliding slot 21 of the back frame 2 to abut and rotate to slide to the outer side of the sliding slot 21 of the back frame 2. The telescopic column 54 is pushed and inserted into the insertion hole 23 on the outer side of the sliding slot of the back frame 2 by the squeezing of the squeeze spring 53; the locking rod 55 is downward from the upper end of the sliding rotary block 52 After rotating, the lock is connected to the positioning member 56 at the bottom of the lock slot 22 after passing through the lock slot 22. The adjusting mechanism 7 includes a positioning plate 71, a sliding plate 72, and an adjusting screw 73; a positioning plate 71 is installed at both ends of the back frame 2; the outer end and the inner end of the positioning plate 71 are respectively provided with An adjusting groove 711 and a floating groove 712; a threaded channel 713 is provided between the adjusting groove 711 and the floating groove 712; a sliding plate 72 is slidably installed in the floating groove 712; one end of the sliding plate 72 Slide into the floating slot 712

Inside, the other end of the sliding plate 72 extends to the outside of the floating groove 712; the threaded channel 713 is respectively threaded with an adjusting screw 73; the outer end of the adjusting screw 73 is located in the adjusting groove 711, and the inner end Located in the floating groove 712; the inner end of the adjusting screw 73 is rotatably clamped with one end of the sliding plate 72; the other end of the sliding plate 72 is connected to a strap 3 respectively.

[0030] As shown in FIGS. 1 to 11, it is further preferred that the outer end of the connecting groove 511 of the connecting plate 51 is provided with a ring-shaped limiting tooth 512; the middle and outer sides of the telescopic column 54 are provided with a ring-shaped telescopic groove 541; The telescopic column 54 is slidably clamped on the annular limiting tooth 512 of the connecting groove 511 through the annular telescopic groove 541 on the outer side of the middle circumference. Further, the depth of the locking groove 22 is smaller than the depth of the sliding groove 21, as shown in FIG. 10, so that the sliding rotary block 52 does not fall into the locking groove 22. Further, the cross sections of the sliding slot 21 and the sliding rotating block 52 are both T-shaped structures; the sliding rotating block 52 is a stepped cylinder, and the lower end of the sliding slot 21 can be semi-circular in order to fit into the sliding slot 21. structure. Further, the locking rod 55 has an L-shaped structure; the positioning member 56 has an inverted U-shaped structure; the outer end of the locking rod 55 is rotatably locked on the positioning member 56. Further, the outer end surface of the telescopic column 54 is provided with a wear-resistant coating 541; the wear-resistant coating 541 is made of polytetrafluoroethylene. Further, it also includes an isolation layer 6; the isolation layer 6 is installed between the sliding plates; the isolation layer 6 is made of elastic soft material. The back frame 2 has a U-shaped structure; the back frame 2 is made of plastic material.

[0031] The present invention adds a structure in which the distance between the strap 3 and the back frame 2 is adjustable, and an adjustment mechanism 7 is added. The adjustment screw 73 is controlled by rotating in the adjustment groove 711 of the positioning plate 71, so that the adjustment screw 73 rotates when the screw 73 moves. The sliding plate 72 can be driven to telescopically move in the floating groove 712 of the positioning plate 71, thereby changing the moving distance of the sliding plate 72 in the floating groove 712, thereby changing the distribution distance between the strap 3 and the back frame 2, so as to achieve the best use effect.

[0032] The present invention changes the connection method of the traditional oxygen cylinder 1 and the back frame 2 to improve the stability and installation efficiency of the connection; the present invention achieves a triple connection structure to ensure stability. First, the present invention is on the outside of the back frame 2. A sliding slot 21 is provided in the middle from top to bottom, a sliding rotating block 52 is installed in the middle of the outer side of the connecting plate 51, and slidingly inserted from the upper end of the sliding slot 21 of the back frame 2 through the sliding rotating block 52 outside the connecting plate 51, and The sliding rotating block 52 is slidably inserted into the lower end of the sliding card slot 21, thus forming the first sliding card connection; then the sliding rotating block 52 is rotated 180 degrees inside the lower end of the sliding card slot 21 and drives the connecting plate 51 and oxygen The bottle 1 rotates. The oxygen bottle 1 is actually upside down before it rotates. The connecting plate 51 drives the telescopic column 54 to abut and rotate to slide from the other side of the sliding slot 21 of the back frame 2 to one of the sliding slot 21 of the back frame 2. At the same time, the locking rod 55 rotates downward from the upper end of the sliding rotary block 52 to the bottom of the locking groove 22, thus forming the second rotation direction; finally, the telescopic column 54 is pushed by the compression spring 53 Insert and snap into the insertion hole 23 on the side of the sliding slot 21 of the back frame 2, and at the same time, the outer end of the locking rod 55 is locked and connected to the positioning member 56 at the bottom of the locking slot 22, thus forming the third layer Insert the card connection positioning, which greatly improves the connection stability of the oxygen cylinder 1 and the back frame 2; and the entire installation process The process is a sliding and rotating process, which is quick and convenient to install. It can be seen from Figures 6 and 7 that the oxygen cylinder 1 is inserted upside down on the back plate 2 at the beginning, and then the lock is snapped after rotating 180; from the figure 3 to 5 can know the entire rotation process.

[0033] The present invention uses a 180-degree rotation to transform the two forms of locking methods. First, the sliding connection between the sliding rotary block 52 of the connecting plate 51 and the sliding slot 21 of the back frame 2 occurs at 180 degrees. Before the rotation, the insertion of the telescopic column 54 and the insertion hole 23 and the locking of the locking rod 55 and the positioning member 56 all occur after a 180-degree rotation. The rotation separates the front and rear connection modes. It greatly increases the resistance to multiple deformations of the structure, so even if the telescopic column 54 is inserted into the insertion hole 23 and the lock lever 55 and the lock of the positioning member 56 are disengaged, they must be connected after a 180-degree rotation. Only the sliding and rotating block 52 of the plate 51 can be slidably separated from the sliding slot 21 of the back frame 2, so the structure of the present invention is more stable.

[0034] The present invention is provided with an insertion hole 23 on the outer side of the sliding slot 21 of the back frame 2, and the sliding rotation of the connecting plate 51

One side of the block 52 is provided with a connecting groove 511, and the outer end of the telescopic column 54 of the present invention extends to the outside of the connecting groove 511 and abuts on the other side of the sliding slot 21 of the back frame 2, so that the back frame 2 The upper insertion holes 23 and the telescopic posts 54 on the connecting plate 51 are distributed on both sides, so that when the connecting plate 51 rotates, the same side correspondence is realized and the connection is realized.

[0035] The foregoing descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in Within the protection scope of the present invention.