Device for plucking hairs out of human skin

The present invention relates to a human skin hair-pulling device with a housing housing a motor for driving at least one rotating about the axis of the hair-pulling clamp, and a pain-reducing element experienced when pulling hair, the pain-reducing element comprising at least one stimulus element for the mechanical impact on the skin.

Such an epilator is known from European patent application EP 493 849 A1. According to this solution, the hair is grasped and pulled out by the continuously rotating rollers. In front of these rollers there are slats which, when the device is in use, lie flat against the skin and jointly perform a vibrating reciprocating movement. The frequency of such vibrations may be between 5 and 1000 hertz. When using the epilator, the vibrations of the blades adjacent to the user's skin are intended to induce pain which is superimposed on the pain caused by hair pulling. The effect of this is to be at least subjectively felt by the user a reduction in pain caused by actual hair pulling. In practice, however, it has been found that the user still experiences an unpleasant inherent stinging pain of hair being pulled out despite the use of these vibrating blades adjacent to the skin.

According to the unpublished German patent application P 44 08 809, the epilator has a rotating cylinder with clamps which allow the hair to be gripped and plucked out repeatedly. In addition, at least two electrodes are provided through which an excitation current can reach the skin. This stimulus allows irritation of the underlying nerve structures, as a result of which the user has at least a subjective impression of reducing pain.

The object of the invention is to create a device for pulling hair out of human skin with which the pulling of hair is performed more efficiently while significantly reducing the pain experienced by the user.

The human skin hair pulling device is characterized according to the invention in that the stimulus element has a free end freely abutting the skin and is positioned laterally adjacent to the rotating clamp. ,

Preferably, the plurality of stimulus elements are disposed in a row parallel to each other.

Preferably, the row of stimulus elements is disposed parallel to the axis of the clamp, which are disposed parallel to the outer side of the housing. .

Preferably, the stimulus element is in the form of a needle and has at its free end a point which is shaped, in particular, in the form of a pyramid, a cone or a spike-tapering element.

Preferably, the blades of the stimulus elements form flush with the clamps of the tear-off head when the device is brought into contact with the skin of the user, such that the blades directly touch the skin.

Preferably, the needle elements are directed perpendicularly into the skin when the head is brought into contact with the skin at the hair-pulling position.

Preferably, the stimulus elements move in a rectilinear motion in the longitudinal direction and the caliper is positioned in rotation with the cyclic opening and closing of the clamps, and the stimulus element is coupled to the drive of the clamp.

Preferably, the stimulus element is spring loaded and / or by means of cam guides or the like or mechanically controlled, the stimulus element being associated with a drive shaft.

Preferably, the drive shaft is crankshaped and coupled to the stimulus.

Preferably, the stimulus has a guide into which the drive shaft engages.

Preferably, the tool has toothed wheels or the like for combining the drive shaft and the caliper, the drive shaft in particular being disposed approximately parallel to the axis of the pincher.

Preferably, the stimulus element is impulse driven.

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Due to the fact that the at least one element that can go into and out of the skin has a free end, a mechanical impulse can advantageously be generated which irritates the skin, which in turn overlaps the actual pain of hair pulling. Moreover, by positioning at least one stimulus element, but in particular several stimulus elements laterally adjacent to the rotating clamp, it is achieved that the skin irritation preferably occurs before or during the pulling process.

By means of the impulse before or during the actual pulling, the pain is produced artificially, preferably of less intensity but with substantially the same characteristics, obscuring or preceding the actual pain accompanying the pulling. Due to the low intensity, the user does not experience this additional pain as unpleasantly as the stinging pain associated with epilation. Practical studies have even shown that, thanks to such an overlapping impulse, the users of the epilator do not experience the actual stabbing pain, but instead they are aware of the much more pleasant pain caused by each impulse. This can be explained by the fact that the pain caused by the impulse practically paralyzes the nerve cells temporarily, anesthetizing them, so that the actual stabbing pain caused by epilation disappears, so that the user does not feel this pain or feels it weakly. As a result, the effect of such a one-time impulse is to greatly reduce the actual stinging pain experienced by the user when hair is pulled out.

The device or method is optimized by the fact that the impulse is transmitted to the skin in time or place or in time and place just before each pulling, because such a temporally and / or spatially preceding relieving or deactivating impulse is intended to irritate the nerve cells that will feel the depilation process is about to come.

In a preferred embodiment of the invention, the clamp is associated with an element that rotates around an axis, so that the element is set in rotation with the clamp. Thus, no special structural parts are needed to drive this element.

In a further advantageous embodiment of the invention, the element may extend into and out of the skin. Thereby, the pulse is easily generated by the reciprocating movement of the element. Few additional components are needed for this, so the production costs only slightly increase.

In a further advantageous development of the invention, the element just before the hair is pulled out may be brought against the skin, going from a retracted position to an extended position. This movement creates the necessary impulse to induce artificial pain in the skin. Such an impulsive movement should preferably take place just before the hair is pulled out, and should be impulsive, in particular with a suitable acceleration or speed. With the help of impuIsu, an artificial, weak pain is created that covers the actual, immediately following stinging pain caused by hair pulling, so that the user experiences subjectively less pain.

In a further advantageous development of the invention, this element can move into the extended position just after the impulse on the skin, so that during the next pulling process the element is in the starting position again and can trigger the impulse on the skin again. Thus, the impulse produces the necessary artificial pain without entailing any other negative consequences for the user.

According to the invention, it is particularly expedient if the element can be pressed from the skin itself, so that no special components are then required. Instead, the impulse-transmitting element returns automatically upon reaching the skin. It is a good idea to have one pulse transmission element for each tool clamp. This measure is an independent feature of the invention.

In a preferred embodiment of the invention, in which the clamp is capable of rotating with cyclic hair pulling, the element is coupled to the rotation of the clamp and is located just in front of the clamp as seen in the direction of rotation. As a result, the element transmits a pulse in time and space in each case just before each cycle of hair pulling by the clamp. This is achieved without any special additional structural parts,

179 983, but only by advantageously positioning the element in front of the clamp, as seen in the direction of rotation.

In an advantageous development of the invention, the element may assume a retracted position, in which the diameter is smaller than the largest diameter of the clamp during rotation, and an extended position, in which, during the rotation, the diameter is greater than the largest diameter of the clamp. Thus, during the pivotal movement, the element protrudes from the clamp in the extended position, which is not present in the retracted position of the clamp.

It is especially expedient to use these two positions of the element for generating pulses. The first possible use is that the extended position is taken as the starting position and the element moves to the retracted position upon contact with the skin. The contact of the element with the skin thereby transmits an impulse. Then the element returns to the ejected position. The second possibility is that the retracted position is taken as the starting position and the element jumps to the extended position just before the hair is pulled out. In this simple way, the necessary impulse is generated and transmitted to the skin. The element then returns to the retracted position. Of course, one skilled in the art can envision still other possibilities for using both positions of the element to generate the pulse.

In practice, it has proved to be particularly expedient when, in the extended position, during the rotation movement, the diameter is approximately 0.1 mm to 6 mm greater than the largest diameter of the clamp.

In a preferred embodiment of the invention, the element can be actuated by a centrifugal force and / or a spring force and / or via cam guides or the like. In this simple way, reciprocating movement of the element is achieved between a retracted position and an extended position. Especially when using cam guides, it is possible to very accurately control the reciprocating movement of the element.

In a further advantageous development of the invention, the element has a sharpened and / or toothed and / or grooved pulley and / or a suitably shaped shaft or the like. Such a configuration has proved to be particularly advantageous in practice, in particular in the case of the above-mentioned first pulse generating possibility. Thus, for example, a toothed wheel just before the hair is pulled out is jogged by a cam guide from the retracted position to the extended position.

In another advantageous embodiment of the invention, the element has a hump and / or a spike or the like and is elastically connected to the rotary cylinder. This configuration has proved to be particularly advantageous in practice, in particular in the case of the above-mentioned second pulse generation option. Thus, for example, a hump strikes the skin and creates the necessary impulse to then move away from the skin from its extended position to its retracted position.

In this connection, it is particularly advantageous according to the invention if a hump or a spike or the like is attached to the threader of the tearable hair.

In another preferred embodiment of the invention, the element performs an essentially rectilinear movement, so that the element hits the skin particularly well and stimulates the nerves. The impulse generated by this movement of the element is particularly well suited to induce artificial pain to mask the subsequent hair-pulling pain. A further advantage of the rectilinear movement of the element is that such a movement can be easily and accurately produced and controlled.

In an advantageous development of the invention, the element comes to rest on the skin just before or during the pulling of hairs and in particular leaves the skin just after impact. Such a course of motion of the stimulus element turned out to be particularly appropriate in practice. In particular, this ensures that the pulse triggered by the element is very short and occurs each time before or during hair pulling.

In a preferred development of the invention, the fall of the stimulus element on the skin and its departure from the skin is mechanically controlled. In this way, an accurate, simple and effective control of the movement of the element is obtained.

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In an advantageous development of the invention, the element for controlling it is coupled to a clamp, which facilitates the control of this element. Moreover, such a coupling makes it possible to simplify and effectively solve the drive of the element.

In an advantageous development of the invention, the element is in the form of a needle with a point hitting the skin. The element is therefore a simple, elongated part which, especially thanks to its sharp point, generates the necessary impulse and the associated pain by hitting the skin.

In an advantageous development of the invention, a drive shaft is assigned to the element, by means of which the element is lowered onto the skin and lifted again. This roller produces and controls the stimulus element movement. The drive shaft is deliberately assigned a double function, which simplifies the overall design of the drive and control of the stimulus element, and has a positive effect on its production and associated costs.

In an advantageous development of the invention, the drive shaft is crankshaped and coupled to the element. In particular, the design in the form of a crankshaft significantly simplifies the drive and control of the element. It is expedient in particular when the element has a guide in which the drive shaft engages. A simple and effective coupling between the stimulus element and the drive shaft is thereby achieved.

In a preferred development of the invention, gears, conical wheels or the like are provided for the connection of the drive shaft and the clamp. Such connections make it possible to simply but effectively couple the drive shaft to the clamp. Thus, the element is consequently coupled to the clamp via gears or taper wheels or the like on one side and the guide of the element engaging the crank drive shaft on the other side. In this way, the element is driven and controlled from the clamp by the drive shaft.

In an advantageous development of the invention, a plurality of elements are arranged approximately parallel next to each other. Therefore, suitable elements can be provided over the entire width of the clamp, so that wherever hair is pulled out, corresponding pain-relieving impulses can also be generated.

. It is particularly advantageous to arrange the drive shaft approximately parallel to the axis of the clamp, which facilitates the coupling of the drive shaft to the clamp and is also advantageous from the point of view of arranging the element or elements which are driven and controlled by the drive shaft.

In further advantageous developments of the invention, the element or elements are supported longitudinally and / or the drive shaft is rotatably mounted in the housing.

In an advantageous development of the invention, the element transmits a mechanical impulse and / or an electrical impulse, the particular advantage of the mechanical impulse being that the element can be easily and efficiently manufactured. Moreover, this method of generating the pulse is easier for the user, which favors the acceptance of the novelty by the user. The electric pulse has the advantage that it does not normally require any moving parts and can be easily controlled by conventional electronic means.

It is particularly expedient to implement the electrical impulse in such a way that in the epilator according to the aforementioned German patent application P 44 08 809 the excitation current is controlled in dependence on the cyclic hair-pulling, in particular preceding each plucking cycle with a pulsed excitation current spatially and / or temporally.

Further features, advantages and possible applications of the invention result from the following description of the embodiments shown in the drawing. All described and / or depicted as such or in any meaningful connection with one another constitute the subject of the invention, also irrespective of their inclusion in the claims or their reference.

The solution according to the invention will be illustrated in more detail on the basis of the exemplary embodiments shown in the drawing, the figures of which are shown successively: Fig. 1 schematically in perspective view of an embodiment of the tear-out head of the epilator, Fig. 2 - rotary cylinder

179 983 of the tearing head according to Fig. 1 with clamps and pulse generating means, shown schematically in section, Fig. 3 - sharpened wheel as pulse generating element according to Fig. 2, seen from above and from the side, Fig. 4 - toothed wheel as part 2, viewed from above and from the side, FIG. 5, a number of adjacent wheels as pulse generating elements according to FIG. 2, viewed from above, FIG. 6, a rotating cylinder according to FIG. 2 with springs for actuating the pulse generating elements, shown schematically in section, Fig. 7 - rotary cylinder according to Fig. 2 with cam guides for actuating the pulse generating elements, shown schematically in section, Fig. 8 - rotary cylinder similar to Fig. 2 with resilient humps in the first embodiment, shown schematically in top and side views in partial section, and fig. 9 a rotary cylinder similar to fig. 2 with resilient barbs in the second embodiment, shown diagrammatically from above and from the side with a partial section, Fig. 10 - another embodiment of the tear-out head of the epilator according to the invention, shown schematically in perspective, Fig. 11 - the extraction head of Fig. 10, shown schematically in a side view from the direction D of Fig. 12, Fig. 12 the tear-out head of Fig. 10, shown schematically in a plan view from the direction A in Fig. 11, Fig. 13 the tear-out head of Fig. 10, shown schematically in section along plane BB in fig. 11, and fig. 14, the tear-out head in fig. 10, shown schematically in section along plane CC in fig. 11.

The human skin hair plucking device shown in FIGS. 1 to 9 has a cylinder 10 rotatably mounted in the housing 2 and driven, for example, by an electric motor. This rotatable cylinder 10 has a plurality of clamps 4 which, in operation, rotate with cylinder 10 and cyclically grasp and pull the hairs of the wearer's turned toward them.

Figure 1 shows the extraction head 1 of such an epilator which has a housing 2 with an opening 3 facing the skin of the user. Through the opening 3 of the housing 2, a plurality of clamps 4 project outwards side by side in a row 5. On both sides of the row 5 a plurality of threaders 6 are provided, which are also arranged in rows 7, 8, respectively, and project outwards through the opening 3. Each threader 6 has an opening 9 through which the pulse generating element described below can exit.

The head 1 shown in FIG. 1 may have not only one row 5 of clamps 4, but several such rows. The same applies to the rows 7, 8 of the threaders 6, the number of rows of pincers 4 being typically the number of rows of threaders 6.

The figure shows the cylinder 10, which is mounted in the housing 2 of the head 1 and is able to rotate about the axis 11. The cylinder 10 has three rows 5, 12, 13 of clamps 4 which are arranged symmetrically in the direction of rotation 14 at a radial distance from the axis 11. In addition, three rows of 7, 8, 15 threaders 6 are provided, which are marked in the top view between rows 5, 12, 13 of clamps 4.

Approximately between the three rows 5, 12, 13 of clamps 4 are each a single stimulus element 16 for generating a pulse or a row of 17, 18, 19 of stimulus elements 16 for generating a pulse in each case. The stimulus elements 16 are coupled to the rotary cylinder 10 and rotate the cylinder about the axis 11 in the direction 14. The stimulus elements 16 are located on the inside of the threaders 6 and may extend outward through the holes 9 of the threaders 6. Each stimulus element 16 is positioned in the direction of rotation 14 just before the following clamp 4. Each stimulus element 16 is coupled in such a manner to the rotary cylinder 10 that it can reciprocate in a substantially radial direction in a straight or curvilinear direction. to axis 11. Thus, each stimulus element 16, as long as it points approximately towards skin 21, can extend to skin 21 and depart towards 20.

In such a reciprocating movement of the stimulus element 16 there is a retracted position 22 and an extended position 23, each time reversing the direction of movement at the end points. During the rotational movement of the cylinder 10, and thus the stimulus elements 16, the outermost diameter of the 24 stimulus elements 16 located

179 983 in the retracted position 22 is less than or equal to the largest diameter of the pinchers 4. Accordingly, the diameter of the 26 stimulus elements 16 in the extended position 23 is greater than the largest diameter of the pincers 4. The diameter of the protruding stimulus elements 16 is greater by approximately 27 by approximately 27. 0.1mm to about 6mm than the largest diameter of 25 clamps 4.

When the epilator is turned on, the stimulus 16 transmits a mechanical impulse to the skin 21 in the form of a punch or a prick. By positioning stimulus 16 in the direction of rotation 14 just in front of the respective pincer 4, an impulse is transmitted to the skin 21 temporally and spatially just prior to the hair being pulled out by the pinch 4. By accurately matching the stimulus element 16 to the respective pincer 4, an impulse is transmitted before each individual tear. Thus, the associated stimulus 16 generates one pulse for each clamp 4 and each clamping run.

In order to generate a pulse, stimulus element 16, in its extended position 23, hits the skin 21 with a pulse thereon. Immediately upon impacting the skin 21, the stimulus element 16 moves to the retracted position 22 for at least as long as it lies against or faces the skin 21. This is illustrated in Fig. 2.

Representation of stimulus 16 in the retracted position 22 can possibly be achieved by the fact that stimulus 16 is pressed against the skin 21 by itself, for example against spring force or centrifugal force or the like. This is explained below with reference to Figures 5 and 6.

If the stimulus 16 in the extended position 23 projects only slightly beyond the largest diameter 25 of the clamp 4, then in some cases the stimulus 16 may not move to the retracted position 22.

There is an alternative possibility that the stimulus 16 just before pulling out the hair moves from the retracted position 22 to the extended position 23. This is the movement of the stimulus element 16 towards the skin 21 in the direction 20, the effect of which is to transmit an impulse from the stimulus element 16 to the skin. 21. As soon as the impulse is transmitted, stimulus element 16 returns to its retracted position 23 moving away from the skin 21. Such reciprocating movement of stimulus 16 can be induced, for example, by respective cam guides acting on stimulus 16. This is explained below with reference to Fig. 7.

Figures 3a, 3b and 4a, 4b show different embodiments of the stimulus element 16. Thus, the stimulus element 16 may be formed as a wheel 28 which has a blade 29 on its periphery. Additionally and / or alternatively, a wheel 28 with a plurality of serrations 30 may be formed. the free ends of which are optionally provided with blades 29. Further embodiments are provided with correspondingly shaped shafts or the like. The diameter of the wheel 28 or the roller is usually much smaller than the largest diameter 25 of the clamp 4.

5 to 7 show different variants of realizing the reciprocating movement of the stimulus element 16.

Thus, according to FIGS. 5 or 6, a single stimulus element 16 or a plurality of stimulus elements 16 arranged, for example, in the form of a row on the shaft 31 are connected by means of springs 32, 33 to the cylinder 10. As a result, the stimulus elements 16 when rotating the cylinder 10 about the axis 11 are pressed by the force of the springs into the extended position 23. On hitting the skin 21, the stimulus elements 16, overcoming the force of the springs 32, 33, are forced parallel to the direction 20 into a retracted position 22 until they are no longer aligned with the skin 21 due to their rotation.

Thereby, the spiral springs 32 in the embodiment according to FIG. 5 are arranged approximately parallel to the direction 20, while the leaf springs 33 in the embodiment according to FIG. 6 are arranged approximately transversely to the direction 20. In both cases, the force of the springs 32,33 acts radially outward approximately parallel to the direction 20, so that the springs 32,33 always force the stimulus members 16 outward approximately parallel to the direction 20 into the extended position 23.

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Additionally and / or alternatively according to Fig. 7, a cam guide 34 may be provided with which stimulus element 16 is coupled and which controls the reciprocating movement of stimulus element 16. The guide 34 contributes to the stimulus element 16, just prior to pulling out the hair, moves approximately parallel to direction 20 to extended position 23. This occurs approximately as stimulus member 16 is aligned nearly against skin 21. Due to the corresponding design of the guide 34, the stimulus element 16 is preferably transferred to the extended position 23 as quickly or as quickly as possible. Upon imparting the impulse, stimulus 16 returns to its retracted position 22 due to the suitably shaped cam track 34.

Other variants of the stimulus element 16 appear from Figures 8 and 9.

Thus, according to FIGS. 8a, 8b, 8c, the stimulus 16 has the form of a hump 35 arranged on the free end 35 of the threader 6 and connected to the cylinder 10. At least the free end 36 of the threader 6 is resiliently shaped, e.g. . In the normal state, the hump 35 takes the protruding position 23. By hitting the skin 21, the hump 35 is forced therefrom automatically into the retracted position 22 against the spring force. When the hump 35 no longer faces the skin 21, it returns to the extended position 23 under the action of the spring force.

Alternatively, according to Figs. 9a, 9b, 9c, the stimulus 16 can be formed as spikes 37 connected to each other by a strip 39, this spike extending in a radial direction through the hole 9 of the threader 6 and is connected to the threader 6 via an elastic arm 38. or other parts of the cylinder 10. Arm 38 may be made of spring steel or plastic.

Figures 10 to 14 show the pull-out head 40 for an epilator. Head 40 has a housing 41 in which there is an opening 42 facing the skin of the user. In the opening 42, a plurality of clamps 43 project outward through the housing 41, arranged side by side in a row. The head 40 shown in Figures 10 to 14 may have not only one row of pincers 43, but several such rows. As it can be seen especially in Fig. 14, the clamps 43 in this case form a rotating cylinder 44 which is rotatably mounted on an axis 45 in the body 41 of the head 40.

Mounted on the housing 41 of the head 40 are two bearing pedestals 46, 47, in which the ends of the drive shaft 48 are rotatably mounted. The shaft 48 is arranged approximately parallel to the clamps 43, and therefore approximately parallel to the axis 45 of the rotary cylinder 44.

Right next to both bearing supports 46, 47, on the shaft 48, gear wheels 49.50 connected rigidly to the shaft 48 are supported , which enter through holes 51, 52 in the housing 41 into the tearing head 40. There, each of the wheels 49, 50 engages with the corresponding a toothed ring 53, 54, and these rings in turn engage rigidly with the rotary cylinder 44, and therefore with the clamps 43. This is especially seen in FIG. 13.

Drive shaft 48 is crankshaped and thus has eccentric components. In particular, this shaft is in the form of a crankshaft, at the ends of which, as already described, the gears 49, 50 are provided.

Shaft 48 is associated with at least one stimulus element 55. In the embodiment of Figs. 10 to 14, shaft 48 is associated with a total of eight stimulus elements 55. Each of the stimulus elements 55 looks like an elongated spike and has a spike 56 at its free end. the stimulus 55 has a U-shaped guide 57. The guides 57 each receive eccentric components of the drive shaft 48.

The individual stimulus elements 55 are arranged approximately parallel to each other and to the outer side of the housing 41. The blades 56 of the elements 55 are positioned on the same side as the opening 42 in the housing 41, so when the epilator is in use, they face the skin of the user. The positioning and length of the stimulus elements 55 are chosen such that the tips 56 of the stimulus elements 55, in use, form almost one plane with the clamp.

179 983 m and 43 of tear-out head 40 so that blades 56 may just be touching the skin of the user. This is especially seen in Figures 13 and 14.

The drive shaft 48, gear wheels 49, 50 and each area of ​​the guides 57 of the stimulus elements 55 are placed under the cover 58 attached to the housing 41. The cover 58 has openings 59, 60 in which the stimulus elements 55 on both sides of the guides 57 are slidingly guided.

When the epilator is in operation, the rotating cylinder 44 rotates about the axis 45. This movement is transmitted via the gear ring 53, 54 and the associated gear wheel 49, 50 to the drive shaft 48. The stimulus elements 55 are set in an ascending and descending motion by eccentric cams. shaft components 48 and guides 57.

The movement is substantially rectilinear and takes place approximately in the longitudinal direction of the stimulus elements 55 and is directed approximately transversely to the skin 61 of the wearer. This is especially seen in Figures 13 and 14.

By displacing the eccentric portions of the shaft 48, it is possible to set the stimulus elements 55 in opposing ascending and descending movements. This is especially seen in Fig. 10.

By providing a predetermined number of the teeth of the ring 53, 54 and the wheels 49, 50, the speed of the ascending-descending movement of stimulus elements 55 can be controlled. Preferably, the frequency of such movement is about 30 hertz, but may also be higher or lower.

Due to the positioning of the stimulus elements 55 on the housing 41, the effect of the ascending-descending movement is such that the blades 56 of the elements 55, when the head 40 is attached to the skin 61, hit the skin 61 in particular. This can be seen especially in Figs. 13 and 14.

The mechanical control of the stimulus elements 55 by means of the drive shaft 48 is designed in such a way that the tips 56 of the stimulus elements 55 just before or during the hair clipper 43 are pulled out of the hair are lowered and hit the skin 61. Thus, a mechanical impulse is transmitted to the skin which causes artificial pain which, in turn, conceals and so alleviates the actual pain of hair-pulling. Moreover, the control is shaped such that the blades 56 of the stimulus elements 55 extend away from it just after impacting the skin 61.

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Publishing Department of the UP RP. Circulation of 70 copies. Price PLN 4.00.