JP2007229386A - Tweezers - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the cost by simplifying the structure and be integrally forming a casing for attaching a tweezers body including a constitution of rearward moving the tweezers body in the tweezers having the tweezers body automatically moving rearward. <P>SOLUTION: A grip part has a flexible part for swinging itself and a guide groove for sliding a clamping plate, the guide groove is provided toward the grip part front end of the flexible part, the both surface parts of the both clamping plates coming into contact with pushing parts, which are formed in the guide grooves or the front side of the guide grooves, are inclined approaching to each other as their extending toward the front ends of the parts coming into contact with the pushing parts, and when the pushing parts push the surface parts of the clamping plates, the front ends of the clamping plates are closed and the tweezers body are moved rearward to pluck the hair. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

  The present invention is a tweezer mainly used by the general public, and in particular, when the gripping part is pressed, the nipping plate of the tweezer main body closes to hold the hair, and the tweezer main body automatically moves backward. It relates to tweezers for pulling out hair.

The automatic tweezers, which consist of a tweezer body and casing, press the gripping part of the casing to close the front end of the tweezer body and pinch the hair, and the tweezer body automatically moves backward to pull out the hair. Exists (for example, refer to Patent Document 1).
In addition, the tweezers body is movably mounted in the casing, and when the surface part of the tweezers body is pressed by a pair of levers attached to the casing, the surface part slides on the pressing part while the front end of the tweezers body There is also an automatic tweezers that closes and the tweezer main body moves rearward and pulls out the hairs (see, for example, Patent Document 2).
Japanese Utility Model Publication No. 13-18679 US Pat. No. 2,533,801

  The present invention is a tweezer in which the tweezer main body automatically moves backward, and it is an object to simplify the structure and reduce the cost. It is another object of the present invention to integrally form a casing to which the tweezer body is attached, including a configuration in which the tweezer body is moved rearward.

  The hair removal of Patent Document 1 has a configuration in which a grip portion of a casing and a clamping plate of a hair removal body are connected by a connector. Further, the coupling between the connector and the gripping portion and the coupling between the connector and the holding plate are coupling by pins. Therefore, since the connector and the pin are used as a configuration for moving the hair removal main body, there are more parts correspondingly. Further, since the connector is coupled by a pin, the configuration is complicated and the manufacturing process is increased, resulting in an increase in cost.

Patent Document 2 is configured such that a tweezer main body is mounted in a casing, and the front end of the tweezer main body is closed and moved backward by rotating a lever. In the present invention, since the lever is mounted on the casing by the support shaft, there are more parts correspondingly. In addition, the casing and the lever cannot be formed integrally, and since they are coupled by a support shaft, the configuration becomes complicated and the manufacturing process increases, resulting in an increase in cost. Accordingly, an object of the present invention is to provide a tweezer having a simple structure by reducing the number of parts as compared with the prior art, and having a low cost. Further, conventionally, in addition to the casing, parts for moving the hair removal main body have been required. Therefore, they have to be formed separately and connected by a support shaft. An object of the present invention is to provide a tweezer capable of integrally forming a moving structure of the casing and the tweezer main body as the casing itself has a function of moving the tweezer main body.

  The present invention includes a casing and a tweezer main body, and the casing is formed of a base portion thereof and a pair of gripping portions extending oppositely from the base portion, and the tweezer main body includes a pair of opposing clamping plates. The pair of clamping plates are joined to the casing so that the rear ends are joined and the front ends can be freely opened and moved in the front-rear direction inside the gripping part. And a stopping structure that stops the forward movement of the hair removal body at a predetermined position, and when the gripping part is pressed, the front end of the clamping plate is closed and the hair removal body moves backward. In the hair removal for pulling out the hair, the gripping part has a flexible part for swinging itself and a guide groove for sliding the clamping plate, and the guide groove is provided closer to the front end of the gripping part than the flexible part. Formed in the guide groove or in front of the guide groove Both the surface portions of both sandwiching plates in contact with the pressed portion are inclined so as to approach the front end rather than the portion in contact with the pressing portion, and the pressing portion presses the surface portion of the sandwiching plate to sandwich the sandwiching plate. The front end of the plate is closed, and the hair removal main body moves backward to pull out the hair.

  This invention is the above structure, Comprising: The press part which presses the surface part of the clamping board of a hair removal main body is formed in the guide groove of a holding part, or the front side rather than a guide groove. Furthermore, both surface portions of both sandwiching plates are inclined so as to approach each other toward the front end rather than the portion in contact with the pressing portion. Therefore, when both gripping parts are pressed so that both gripping parts approach each other, the pressing part presses the surface part of both sandwiching plates, the front ends of both sandwiching plates are closed, and the hair is sandwiched. Furthermore, when both gripping parts are pressed with a stronger force, the component force to move the hair removal body in the pressing force backward becomes larger than the urging force that always elastically pushes the hair removal body forward, and the hair removal body. The hair can be automatically pulled out by moving the back. And the press part is formed in the front side rather than the guide groove or the guide groove of a holding part. Since the pressing portion presses the surface portion of the holding plate, the pressing portion can be formed integrally with the casing. Therefore, it is not necessary to form a separate part to press the clamping plate and to connect it to the casing using a connecting means such as a pin. Thereby, manufacturing cost can be made lower than before.

  Next, the best mode for carrying out the present invention will be described. The casing 1 is initially formed by being divided into upper and lower parts separately around the joint line 2 and is formed by joining at the part of the joint line 2 after the formation. The casing 1 includes a base portion 3 and a pair of gripping portions 4 and 4 extending integrally from the base portion 3. A pressing portion 5 is formed at the front end portion 14 of each gripping portion 4. Although the pressing part 5 is formed in the foremost part of the front end part 14, you may form it behind it. Portions other than the front end portion 14 of the grip portion 4 are integrally formed with the base portion 3 by ABS resin, and the front end portion 14 is integrally formed by polyacetal resin. Polyacetal resin has the property of having a smaller coefficient of friction and superior wear resistance than ABS resin. Therefore, when it comes into contact with other members, it is slippery and has little wear. The method for manufacturing the initially divided casing 1 is preferably a method in which a portion other than the injection-molded front end portion 14 is joined to the injection-molded front end portion 14 by fitting. You may adhere | attach instead of killing. At this time, the cross section of the front end portion 14 is also formed in a U shape. Alternatively, a portion other than the front end portion 14 may be first injection-molded, and the front end portion 14 may be formed on the molded portion by a second injection molding. Further, the present invention is not limited to the configuration in which the front end portion 14 is formed separately, and the front end portion 14 and the grip portion 4 may be integrally formed of the same material.

  Further, as shown in FIG. 3, the front end portion 14 is configured to have a width that decreases toward the front end. The reason for this configuration is as follows. That is, for example, when the eyebrows are pulled out while looking at the mirror, the clamping plate 17 is pulled out by being applied obliquely without being applied perpendicularly to the face. Therefore, as shown in FIG. 3, the front end 26 of the clamping plate 17 is formed obliquely. This is because, when vertically applied, the grip portion 4 becomes an obstacle, and the front end 26 of the holding plate 17 cannot be confirmed with a mirror, and the target hair cannot be smoothly pinched and pulled out. However, even if the holding plate 17 is obliquely applied to the face, if the front part of the gripping part 4 is wide, the front part 26 of the holding part 17 cannot be confirmed due to the front part of the gripping part 4 being in the way. Therefore, by forming the width of the front end portion 14 so as to decrease toward the foremost end, the width of the front end portion 14 overhanging the grip portion 4 is reduced, and the front end of the holding plate 17 is reduced from the narrowed portion. 26 can be seen in the mirror. The front end 26 of the sandwiching plate 17 may be perpendicular to the length direction of the tweezers instead of being inclined.

  The grip 4 has a U-shaped cross section over its entire length. Therefore, the cross section of the front end portion 14 is also U-shaped. The cross section of the portion of the grip portion 4 near the base 3 is U-shaped as described above, but the flexible portion 15 is formed near the base 3 as shown in FIG. The flexible part 15 is configured by making the height of the side wall 16 lower than other parts. Therefore, the grip portion 4 can be bent at the portion of the flexible portion 15.

  A spring storage chamber 6 is formed in the base 3 of the casing 1. A coil spring 7 is stored in the storage chamber 6. Further, an end wall 9 is formed on the front surface of the storage chamber 6. A rear wall 8 of the grip portion 4 is formed slightly in front of the end wall 9. The rear wall 8 and the end wall 9 are respectively provided with elongated insertion holes 10 and 11 for guiding the rear end portion 13 of the hair removal body 12 in the front-rear direction. The insertion holes 10 and 11 are formed as recesses in the edges of the divided rear wall 8 and end wall 9 of the originally divided casing 1, and the insertion holes 10 and 11 are joined by joining the divided casings 1. 11 is formed.

  The tweezer main body 12 is formed in a state in which the rear ends of the pair of sandwiching plates 17 and 17 are joined and the front ends are opened. Needless to say, the sandwiching plate 17 may be one obtained by joining two metal plates, or may be one obtained by bending one elongated metal plate at the center. As shown in FIG. 5, the backward restricting portions 18 and 18 and the forward restricting portions 19 and 19 are formed at the rear portion of the sandwiching plate 17. The retraction restricting portion 18 is in front of the rear wall 8, and the retreat restricting portion 18 is engaged with the rear wall 8 to restrict the retraction of the tweezer main body 12 at this position. Further, the advancement restricting portion 19 is located behind the end wall 9 and the advancement restricting portion 19 is engaged with the end wall 9 so that the advancement of the hair removal body 12 where no force is applied to the gripping portion 4 at this position. regulate. Since the tweezer main body 12 is always elastically pressed forward by the coil spring 7, the tweezer main body 12 is stopped at this position with its forward restricting portion 19 locked to the end wall 9. In addition, the coil spring 7 and the hair removal main body 12 mentioned above are attached in the casing 1 before joining the casing 1 divided | segmented into two, and the casing 1 divided | segmented after that is joined. This is because the coil spring 7 and the hair removal main body 12 cannot be attached after the casing 1 is joined. Instead of the coil spring 7, another elastic member may be used. Note that the two divided members of the divided casing 1 before assembly need not have the same shape. For example, in order to make the base part 3 bent, a part corresponding to the base part of one split member is warped upward, and a part corresponding to the base part of the other split member is warped downward, and both split members are formed. The base 3 may be bent so as to form an arc as a whole when assembled. Further, the bending portions may be formed so as to have different bending rigidity by forming the bending portions of the pair of flexible portions 15 or the pair of sandwiching plates 17 with different thicknesses and widths. If formed in this way, when pulling out the hair, firstly the hair to be pulled out is applied to the front end 26 of the holding plate existing in the larger bending rigidity, and then when the gripping portions 4 and 4 are pressed, the bending rigidity is increased. The other small clamping plate 17 can bend first to pinch hair. That is, the hair removal can be easily positioned and the hair can be reliably captured.

  The grip portion 4 is provided with a guide groove 20 closer to the front end than the flexible portion 15. The guide groove 20 has a U-shaped cross section, and the guide groove 20 has both side walls 21 and 21 along both sides of the pinching plate 17 of the hair removal body 12 so that the pinching plate 17 of the hair removal body 12 passes through the guide groove 20. It acts to guide. The outer side surface 22 of the part with the guide groove 20 is formed to be lower than the rear side gripping unit outer side with a step. This is for attaching the cap 23 detachably. A locking notch 24 is provided at each of the two rear end portions of the cap 23, and the cap 23 is attached by locking the locking notch 24 to a circular protrusion 25 provided on the outer surface 22. Further, a pair of notches are also provided on both side surfaces of the rear end portion of the cap 23, and the protrusions 28 provided on the side surfaces of the outer portion 22 are fitted into the notches. As a result, when the cap 23 is attached to the tweezers, the protrusions 28 are locked to the cutouts so that the grip portions 4 and 4 are not opened or closed.

  Next, a method of using the present invention will be described. First, as shown in FIG. 2, it is brought close to a predetermined hair to be pulled out with the front ends 26, 26 of the holding plates 17, 17 open. And the holding parts 4 and 4 are pressed with a finger. The pressing position is preferably the circular protrusion 25 or its vicinity. This is because less force is required for the finger to press. In addition, if the pressing position is close to the front end of hair removal, the distance between the hair to be removed and the finger is reduced, and the hair can be pinched accurately. When the distance between the hair and the finger is long, the front ends 26 and 26 of the sandwiching plates 17 and 17 must be controlled at the far position, and it takes time and effort to pinch the thin hair accurately. When the gripping portions 4 and 4 are pressed with a finger, the pressing portions 5 and 5 press the surface portions 27 and 27 of the holding plates 17 and 17, and the front ends 26 and 26 are closed to pinch predetermined hairs. At this time, the hair removal body 12 moves little or not rearward. This is because the force that only pinches the hair between the clamping plates 17 and 17 is insufficient to move the hair removal main body 12 against the elastic force of the coil spring 7. Therefore, when the gripping portions 4 and 4 are pressed with a larger force, the surface portions 27 and 27 of the sandwiching plates 17 and 17 slide on the pressing portions 5 and 5, and the hair removal body 12 compresses the coil spring 7. As a result, the hair removal main body 12 can automatically move backward to pull out the hair. When the gripping portions 4 and 4 are released from the press after being pulled out, the hair removal main body 12 moves forward, and the front ends 26 and 26 of the sandwiching plates 17 and 17 are opened again as shown in FIG. 1 or FIG. When using a coil spring with a small spring constant, that is, a coil spring 7 that deforms greatly with a small force, the coil spring 7 is compressed when the hair is pinched by the sandwiching plates 17 and 17, and the tweezer main body 12 moves simultaneously. In addition, when both the surface portions 27 and 27 of the both sandwiching plates 17 and 17 in contact with the pressing portion 5 are inclined so as to approach each other toward the front end, the force that presses the gripping portions 4 and 4 is increased. In this case, the coil spring 7 is compressed and the hair removal body 12 is moved at the same time when the hair is sandwiched between the holding plates 17 and 17. The present invention may be configured as described above. In FIG. 2, the total length of the hair removal is about 90 mm, and the maximum width in the vertical direction of the hair removal is about 25 mm.

Cross section of the present invention Front view of the present invention Plan view of the present invention BB sectional view in FIG. Top view of the tweezer body Front view with the front end of the clamping plate closed Front view of the present invention with a cap attached Top view of the present invention with a cap attached

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casing 2 Joining line 3 Base 4 Gripping part 5 Pressing part 6 Spring storage chamber 7 Coil spring 8 Rear wall 9 End wall 10 Insertion hole 11 Insertion hole 12 Tweezer body 13 Rear end part 14 Front end part 15 Flexible part 16 Side wall 17 Landing plate 18 Retraction restricting portion 19 Advance restricting portion 20 Guide groove 21 Side wall 22 Outer side surface 23 Cap 24 Locking notch 25 Circular projection 26 Front end 27 of sandwiching plate Surface portion 28 of sandwiching plate Projection

Claims (1)

The casing includes a tweezer main body, and the casing is formed of a base portion thereof and a pair of gripping portions extending opposite to the base portion, and the tweezer main body includes a pair of opposing sandwiching plates, The clamping plate is attached to the casing so that the rear end is joined and the front end can be opened and closed, and can be moved in the front-rear direction inside the gripping portion. A pulling structure that has a biasing structure and a stopping structure that stops the forward movement of the hair removal body at a predetermined position, and when the gripping part is pressed, the front end of the clamping plate is closed and the hair removal body moves backward to pull out the hair. In
The gripping part has a flexible part for swinging itself and a guide groove for sliding the clamping plate, and the guide groove is provided closer to the front end of the gripping part than the flexible part. Alternatively, both surface portions of both sandwiching plates in contact with the pressing portion formed on the front side of the guide groove are inclined so as to approach the front end rather than the portion in contact with the pressing portion, and the pressing portion is the surface of the sandwiching plate. A tweezers characterized in that the front end of the clamping plate is closed by pressing the part, and the tweezer main body moves backward to pull out the hairs.

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