JPH04152904A - Tweezer - Google Patents

Abstract

PURPOSE: To reliably tweeze hair even from any direction by simple operation by capturing the hair between an end surface of a first rotary element to freely rotate around a shaft and an end surface of a second rotary element to move in the shaft direction while being driven in rotation by a motor on the same shaft. CONSTITUTION: This device is applied to a hair growing skin surface, and is moved in the optional direction in a condition of being contacted with this skin surface. As a result, hair existing on a moving passage of the device can enter a head of a housing 1 between end surfaces of rotary elements 3 and 10. The second rotary element 10 is driven by a driving motor 17, and a position is moved, and when the end surfaces 4 and 11 are approached to each other, the hair is sandwiched between these end surfaces 4 and 11, and the second rotary element 10 is successively rotated in a condition where the end surfaces 4 and 11 are approached most to each other, and the sandwiched hair can be pulled out. Since the end surfaces 4 and 11 are constituted in a circular shape, even if the device is moved in any direction, the hair can enter between the end surfaces 4 and 11. Therefore, the sandwiched hair can be effectively pulled out, and very short hair can also be handled.

Description

[Detailed description of the invention] [Awanagari Soho Game Cooker] The present invention relates to a tweezers.

BACKGROUND OF THE INVENTION Tweezing devices have been known for a long time for pulling out and removing unwanted hair, especially on the arms and legs, from the skin, hair, and hair. In this connection, a method using a curved coil spring has been proposed (Swiss Patent No. 268696). This coil spring rotates about its axis as the device is manually moved along the skin, resulting in the coil windings on the depressed side being compressed together while the coil windings on the colored side are spreading out. It will be done. According to this method, hair that gets into the gap between the two expanded windings located on the swollen side of the coil spring is retained between these windings as the coil spring rotates, and is removed from the surface of the skin. You can pull out the retained hair by moving the spring by hand along the .

The principles of the manual device disclosed in the earlier Swiss patent are also utilized in electric tweezers such as those described in US Pat. No. 4,524,772. In another type of electric tweezers (U.S. Pat. No. 4,726,375), a manual or powered rotating spring-curved flexible rod is substituted. This flexible rod has slits formed on its surface, so that when the slits in the shaded part of the flexible rod are expanded, the slits in the recessed part of the flexible rod are compressed together. It is composed of

The reality is that such well-known tweezers cannot remove hair that is less than a predetermined length. Moreover, using such a device causes great discomfort or severe pain to the user.

It is an object of the present invention to provide a new and improved tweezing device.

-゛- According to the second aspect of the present invention, there is provided a housing, a first rotary element which is attached to the housing and is rotatable about an axis, and a first rotary element which is rotatable about an axis. a second rotary element mounted to the housing; a generally circular end surface of the rotary element; a second rotary element mounted to the housing and connected to the second rotary element; a drive motor for rotating the rotary element about the axis and moving the rotary element axially relative to the first rotary element so as to move the end faces toward and away from each other; A tweezing device is provided in which the tweezers grab the hairs interposed between the end faces as they approach each other, and when the end faces are closest to each other, the elements are successively rotated to pull out the hair.

Preferably, the drive motor is connected to the second element via a drive roller, and the drive roller is in frictional engagement with a circular cam surface coaxially mounted on the second rotating element. There is. The cam surface comprises symmetrically arranged sloped portions communicating with a central portion of constant height.

According to one embodiment of the invention, the two pairs of rotating elements are mounted on opposite ends of a common shaft, and the end faces are constituted by overlapping edges of each pair of rotating elements.

In use, the device is applied to a skin surface where hair grows and is moved in any direction while in contact with this skin surface. As a result, bristles that are on the path of movement of the device become trapped in the housing head between the end faces of the rotating element. By driving the second rotating element to move the position and bring the end faces closer together, the hair is sandwiched between these end faces,
The second rotating element is continued to be rotated with the end faces closest to each other, and the trapped hair can be effectively pulled out. Since the end faces are circular, the bristles can fit between the end faces no matter which direction the device is moved.

Hereinafter, several embodiments of the tweezers according to the present invention will be described in detail with reference to the accompanying drawings.

The device shown in FIGS. 1 and 2 comprises a cylindrical housing 1 with a projecting head 2. The device shown in FIGS. A first rotating member 3 having a conically tapered end surface 4 is rotatably mounted on a shaft 5.
is installed on. The end of the shaft 5 opposite the rotating member 3 is screwed into the head 2 . A slot head 6 is formed at the end of the shaft 5 adjacent to the rotating member 3. This slot head 6 is connected to the rotating member 3
It is located within a central bore 7 formed in the. compression spring 8
has a lowermost end abutting and supporting the slot head 6 and an uppermost end abutting and supporting the inwardly facing shoulder 9 of the rotating element 3.

The second rotary element 10 has a generally cylindrical shape and is formed with a lower edge with an inclined taper forming an end surface 11 . The rotating element 10 is also formed with an upper surface 12 having an upwardly extending central boss 13. The shaft 5 is this central boss 13
, so that the rotating element 10 is rotatable about the axis 5 . The upper surface 12 is formed with a circular rack 14 constituting a cam surface comprising a pair of symmetrically located inclined portions 15a, 15b connected by a portion 15c of approximately the same height.

The compression spring 16 surrounds the shaft 5 and supports the rotating member 4 at its lower end and the upper surface 12 of the rotating member 10 at its upper end.

Thus, the compression spring 8 acts to bias both the circular surfaces 4 and 11, and the compression spring 16 biases the rotating members 3 and 10 away from each other.

The magnitude of the biasing force exerted by the compression spring 8 can be easily adjusted by rotating the slotted screw head 6.

A drive motor 17 is arranged inside the housing 1,
Via a drive shaft 18 projecting into the head part 2, it is connected to a drive pinion 19 which engages a circular rack 14.

According to the modification shown in FIG.
2 is provided.

In use, driving force is transmitted from the motor 17 to the rotating element 10, causing the rotating element to rotate. At the same time, an axial kinematic force is transmitted to the rotating element 10, and the surfaces 11 and 4 are brought closer to each other. When these two surfaces are in closest proximity, the rotating element 10 has rotated to the position shown in FIG. In this state, the pinion 19 has not yet reached the connecting portion 15c of the cam surface 15, and the pinion 19 continues to rotate until it reaches the connecting portion 15c.
Until reaching , the rotating elements 3 and 10 are moving downwards towards the skin (the force when the surfaces 4 and 11 abut against each other, i.e. the clamping force exerted on the pinched hair, It can be adjusted by rotating it appropriately.

If the connecting portion 15c is set to an appropriate length, the rotating member 1 can be rotated while the pinion 19 is engaged with the connecting portion 15c.
The continuous rotational driving force applied to the rotating element 10 allows the rotating element 10 to rotate in a position closest to the other rotating element 3.

In the modification shown in FIG. 3, a drive roller 19' made of a flexible, deformable material (e.g. rubber) frictionally engages the cam surface 15'. This cam surface 15' is
Portions 15a' 15b similar to the cam surface described above.
'j:5 and 15c'. Drive roller 19'
The elastic compressive force generated when the contact portion 15c approaches the connecting portion 15c acts to bias the rotating elements 3 and 10. This effect is the same as that performed by the compression spring 8 of the embodiment shown in FIGS. 1 and 2.

By using the modified rotary element lO° shown in Fig. 4, in which the saw blade is formed by a part whose width is continuously thinned along the periphery, pinched hair can be effectively pulled out. , and can also handle very short hair.

5a, 5b, and 5C, which schematically show a state in which the hair 25 extending from the skin surface 26 is grabbed and pulled out, will be described. 5a, the pinion 19 engages the lowest part of the cam surface 15a, and the overlapping surfaces of the rotating elements are in the furthest apart position, and in this state there is a gap between these overlapping surfaces. The hair 25 can freely enter into the space.

As the highest part of the cam surface 15a engages the pinion 19, the bristles 25 are gradually pinched between the circular end faces of the rotating element, as shown in FIG. 5b. This gripping operation is completed when the connecting portion 15c and the pinion 19 are engaged, as shown in FIG. 5C. By continuing to rotate the rotary element 10 with the connecting portion 15c and pinion 19 engaged while holding the hair 25, the hair can be gradually pulled out from the skin.

The device allows for movement of the device in any direction relative to the skin, and the use of a circular clamping surface allows the device to be effectively directed to the hair, grasping it, and pulling it out.

As mentioned above, when the pinion 19 is engaged with the downward facing surface 15b, the compression spring 16
0 is moved in the direction of separation, but the compression spring 8 functions to press these rotating elements into contact with each other. The degree of this pressure contact can be adjusted by appropriately rotating the slot head 6. Therefore, the force with which the circular end faces are clamped together can be adjusted as appropriate.

In the modification shown in FIG. 6, the rotating elements 3 and 1° of the embodiment shown in FIGS. 1 and 2 are replaced by conical rotating elements 31 and 32 that fit into one another. These rotating elements have wide circular surfaces 33 and 34 with conical tapers such that the circular surfaces sandwich the hair between them. The construction and handling of the modified device of FIG. 6 is the same as the device shown in FIGS. 1 and 2.

Reference is now made to FIG. 7, which depicts a modified hair removal device according to the present invention. Two pairs of rotating elements 41 as shown in the drawing
a and 41b are each attached around the shaft 42. Axis 42 extends laterally through housing 43. A pair of rotating elements 41a and 41b is arranged in the head 44 of the device and projects from this head. The pair of rotating elements 41a and 41b comprises a pair of conical rotating elements 45a, 46a and 45b, 46b.

Elements 45a and 45b are freely rotatably mounted on shaft 42, and elements 46a and 46b have rack cam surfaces 47a and 47b. On the surface of these rack cams, there is a drive motor (
A rotating pinion 48 (not shown) is engaged.

The rotating elements 45a, 46a and 45b, 46b consist of oppositely oriented cones, the overlapping edges of which constitute the respective circular end faces according to the invention.

The device further includes compression springs 51a and 61b. These compression springs serve to bias the respective rotating elements of the multiple pairs toward each other. Compression springs 52a and 52b surrounding the shared shaft 42 serve to bias the multiple pairs of rotating elements away from each other.

As pointed out in the previous embodiment, the rotating element 46a
and 46b causes these elements to rotate and move toward elements 45a and 45b. The cam structure of the racks 47a and 47b (similar to the cam surfaces described in the previous embodiment) allows the overlapping line surfaces of the rotating elements to move toward each other until they reach the closest position (see pair of rotating elements 41a). It is designed to move in the axial direction. - After this closest position has been reached by the rotary element, the rotary element 46a is subsequently rotated, at which point the overlapping circular surfaces are effectively in abutment.

In use of the device shown in FIG. 7, the device is moved along the skin and the hairs become trapped between the circular edges of the open rotating element. As the open edges of the rotating elements move toward each other, the bristles are trapped between these edges, allowing further rotation of the rotating elements 46a and 46b8 and the bristles to effectively extract the hair.

The device according to the present invention can be used to remove tweezers by a simple operation of moving the device along the skin and by a vertical cross-sectional view showing how the hair can be easily pinched and pulled out regardless of the relative direction of movement. The rotating element of the device occupies a first relative position.

FIG. 2 is a partial vertical sectional view of the device shown in FIG.
The rotating elements occupy a second mutual position.

FIG. 3 is a partial vertical sectional view showing a modification of the tweezers according to the present invention.

FIG. 4 shows a modification of the rotating element forming part of the apparatus shown in FIGS. 1 and 2. FIG.

Figures 5a, 5b and 5c are schematic illustrations of the device shown in Figure 3, showing the device in gripping and pulling out hair.

FIG. 6 is a partial longitudinal sectional view showing another modification of the tweezers according to the present invention.

FIG. 7 is a partial vertical sectional view showing another form of the tweezers according to the present invention.

cylindrical housing, 2: protruding head, 3: first rotating member, 4: conical tapered end surface, 5: shaft, 6: slotted head, 7: central bore, 8: compression spring, 9: inwardly directed Shoulder, lO: second rotating element, 11: end surface of rotating element, 12: upper surface, 13: central boss, 14 corner, 15a/15b: inclined portion, 15C: connecting portion,
16: Compression spring, 17: Drive motor, 18: Drive shaft, 1
9: Drive pinion.

F19° Fig.

Fig, 5b Fig, 5c Fig.

1a 1b

Claims (1)

[Scope of Claims] 1. A housing, a first rotating element attached to the housing and capable of freely rotating around an axis, and a first rotating element attached to the housing so as to be rotatable around the axis. a second rotary element mounted to the housing; a substantially circular end surface of the rotary element; a second rotary element mounted to the housing and connected to the second rotary element; a drive motor for rotating about an axis and moving axially relative to the first rotating element so that the end faces move towards each other and away from each other, the end faces approaching each other; The tweezers grip the hairs interposed between these end faces as the end faces approach each other, and the element is successively rotated to pull out the hairs when the end faces are closest to each other. 2. The tweezing device according to claim 1, wherein the drive motor is connected to the second element via a drive roller, and the drive roller has a circular shape coaxially attached to the second rotating element. Tweezers that frictionally engage the cam surface of the tweezers. 3. The tweezing device according to claim 2, wherein the drive roller is made of an elastic flexible material. 4. The tweezing device according to claim 2, wherein the drive roller is constituted by a drive pinion, and the circular cam surface constitutes a circular rack in which the pinion engages. 5. A tweezing device according to any one of claims 2, 3 or 4, wherein the cam surface has symmetrically arranged sloped portions communicating with central portions of constant height. Tweezers. 6. A tweezing device as claimed in any one of claims 1 to 5, wherein the first spring biasing means serves to bias the rotary element in a direction away from it. 7. The tweezer device according to claim 4, wherein a second spring biasing means is installed that acts to apply a constant biasing force to the first rotating element toward the second rotating element. Device. 8. The tweezers according to claim 7, further comprising screw means for changing the magnitude of the biasing force of the second spring biasing means. 9. In the tweezing device according to any one of claims 1 to 8, the end surface has a substantially conical shape, and the end surface of the first rotating element is arranged so that the end surface of the first rotating element approaches the first rotating element at the time when the end surface approaches the first rotating element. The tweezers are located inside the end face of the rotating element No. 2. 10. The tweezing device according to claim 9, wherein the second rotating element has a conical shape. 11. The tweezers according to claim 9, wherein both rotating elements have a conical shape. 12. The tweezing device according to any one of claims 1 to 11, wherein the two pairs of rotating elements are mounted on opposite ends of a common shaft, and the insert body is configured to overlap each pair of rotating elements. A tweezing device consisting of a rim. 13. The tweezing device according to any one of claims 1 to 12, wherein a peripheral saw blade is formed on one end surface of the pair of rotating elements or each pair of rotating elements.