JP2023162309A - eyelash curler - Google Patents

Abstract

To provide an eyelash curler made of resin, which is not larger than a general shape made of metal, secures strength, and can be operated as similar to that of an eyelash curler made of metal.SOLUTION: A fixation member, an action member, and a point-of-effort member are integrally formed of resin. The fixation member includes: an upper press part; a first arm part constituted of one piece; a first handle branched from the first arm part and having a finger hole; a hole frame part having a support hole part; and a pair of poles branched into two from an upper end of the hole frame part and supporting both ends of the upper press part. The upper press part, the first arm part, the first handle, the hole frame part, and the pair of poles are integrally formed. The point-of-effort member includes: a second arm part constituted of one piece; a distal end having a width smaller in a depth direction than a width of the second arm part and inserted to the hole frame part; and a second handle branched from the second arm part and having a finger hole. The second arm part, the distal end, and the second handle are integrally formed. The first arm part is vertically longer than the support hole part in the fixation member.SELECTED DRAWING: Figure 3

Description

The present invention relates to an eyelash curler.

Generally, eyelash curlers (eyelash curlers, eyelash curlers) are constructed using the principle of leverage, and are made of metal such as stainless steel using two fingers.

However, with metal eyelash curlers that use the general lever principle, one metal rod is twisted into a ring shape at the gripping part, and two metal rods are stretched side by side in other parts. , the metal cross section in the grip part was thin and the holding property was poor. Also, people with metal allergies could not use it.

Therefore, in order to prevent metal allergies and make it gentle on the skin, parts of the metal that correspond to the grips that come in contact with the fingers and contact surfaces that the eyelids come into contact with are partially covered with resin. Eyelash curlers in which some members are made of resin have been proposed (for example, Patent Document 1 and Patent Document 2).

Furthermore, there is an eyelash curler with a spring that does not use metal on the outside and whose entire outside is made of resin (for example, Patent Document 3).

Japanese Utility Model Application Publication No. 1983-40002 Japanese Patent Application Publication No. 2007-68695 Japanese Patent Application Publication No. 2004-57581

However, as in Patent Documents 1 and 2, when a resin part is attached to a part of a metal eyelash curler or a part is replaced with resin, the manufacturing process for assembly is required compared to an eyelash curler made of a single metal. As the number increases, productivity decreases.

In addition, if you try to form a resin eyelash curler in the same shape as a general metal shape, the strength for pinching is insufficient. A spring was provided for this purpose. However, the provision of the spring resulted in a complicated and large configuration. Also, with this configuration, compared to a typical metal eyelash curler that uses a lever, the appearance is not similar and the method of operation is different.

Therefore, in view of the above circumstances, the present invention aims to provide a resin eyelash curler that is not larger than a general metal shape, has strength, and can be operated in the same way as a metal eyelash curler. .

In order to solve the above problems, one embodiment of the present invention
a fixing member having an integrally formed upper press part;
an operating member in which a lower press part is movable up and down with respect to the upper press part;
a force point member that moves the action member up and down by rotating about a portion that engages with the fixed member as a fulcrum;
The fixing member, the action member, and the force point member are each integrally made of resin,
The fixing member includes the upper press part, a first handle on which a user hangs a finger, a first arm part extending in the vertical direction, and a support hole located above the first arm part. A hole frame portion in which a hole frame portion is formed, and a pair of pillars that branch into two from a confluence portion at an upper end of the hole frame portion and support both ends of the upper press portion are integrally formed,
The force point member includes a second handle on which the user hangs a finger, a second extending arm, and a tip that is located above the second arm and is inserted into the hole frame. The parts are integrally formed,
When the direction perpendicular to the direction in which the force point member rotates is defined as the depth direction, and the direction orthogonal to the depth direction in the cross section of the fixed member and the force point member is defined as the thickness direction,
In the fixing member, the first handle has a ring shape in which a finger hole is formed by branching from the lower end of the first arm portion to one side in the thickness direction, expanding and folding back;
In the force point member, the second handle has a ring shape in which a finger hole is formed by branching from the lower end of the second arm portion to the other side in the thickness direction, expanding and folding back;
The width in the depth direction and the thickness in the thickness direction of the first arm part, the first handle, the second arm part, and the second handle are equal to each other,
The first arm portion of the fixing member is composed of one arm, and the second arm portion of the force point member is composed of one arm,
In the force point member, the tip portion is narrower in the depth direction than the second handle and the second arm portion;
In the fixing member, the first arm portion is longer in the vertical direction than the support hole portion.
Furthermore, other aspects of the present invention include:
a fixing member having an integrally formed upper press part;
an operating member in which a lower press part is movable up and down with respect to the upper press part;
a force point member that moves the action member up and down by rotating about a portion that engages with the fixed member as a fulcrum;
The fixing member, the action member, and the force point member are each integrally made of resin,
The fixing member includes the upper press part, a first handle on which a user hangs a finger, a first arm part extending in the vertical direction, and a support hole located above the first arm part. A hole frame portion in which a hole frame portion is formed, and a pair of pillars that branch into two from a confluence portion at an upper end of the hole frame portion and support both ends of the upper press portion are integrally formed,
The force point member includes a second handle on which the user hangs a finger, a second extending arm, and a tip that is located above the second arm and is inserted into the hole frame. The parts are integrally formed,
When the direction perpendicular to the direction in which the force point member rotates is defined as the depth direction, and the direction orthogonal to the depth direction in the cross section of the fixed member and the force point member is defined as the thickness direction,
In the fixing member, the first handle has a ring shape in which a finger hole is formed by branching from the lower end of the first arm portion to one side in the thickness direction, expanding and folding back;
In the force point member, the second handle has a ring shape in which a finger hole is formed by branching from the lower end of the second arm portion to the other side in the thickness direction, expanding and folding back;
A wavy uneven shape is formed on the upper surface of the second arm part,
In the force point member, the tip portion is narrower in the depth direction than the second handle and the second arm portion;
The first arm portion, the first handle, the second arm portion, and the second handle have equal widths in the depth direction;
The first arm portion of the fixing member is composed of one arm, and the second arm portion of the force point member is composed of one arm,
In the fixing member, the first arm portion is longer in the vertical direction than the support hole portion.

According to one embodiment, an eyelash curler made of resin can maintain strength and operate in the same way as a metal eyelash curler without increasing the size compared to a general metal shape.

FIG. 1 is an overall perspective view (part 1) of an eyelash curler according to a first embodiment of the present invention. The whole perspective view (part 2) of the eyelash curler of a 1st embodiment. FIG. 1 is an exploded view of the eyelash curler of the first embodiment. FIG. 1 is a front view of the eyelash curler of the first embodiment. FIG. 2 is a rear view of the eyelash curler of the first embodiment. The front perspective view of the metal eyelash curler of a comparative example. The back perspective view of the metal eyelash curler of a comparative example. A diagram illustrating a fulcrum and a load point in an eyelash curler. A diagram illustrating fulcrums and load points when approximated to a simple protruding beam structure. The figure which shows the cross-sectional view of the beam part of an eyelash curler. The figure which shows the example of a structure of the eyelash curler of this invention in consideration of the force ratio and movable angle in a force point member. The figure which shows the example of a structure of an eyelash curler which considered the ratio of the force in a force point member. A table showing evaluation results when eyelash curlers are formed and used with multiple materials. FIG. 3 is a diagram showing the possible range of resin for eyelash curlers based on Young's modulus and section modulus. The whole perspective view of the partial eyelash curler of the modification of 1st Embodiment of this invention. The whole perspective view (part 1) of the eyelash curler of a 2nd embodiment of the present invention. The whole perspective view (part 2) of the eyelash curler of a 2nd embodiment. An exploded view of an eyelash curler according to a second embodiment. The front view of the eyelash curler of 2nd Embodiment. The back view of the eyelash curler of 2nd Embodiment.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In the drawings below, the same components are denoted by the same reference numerals, and redundant explanations may be omitted.

The present invention relates to a resin eyelash curler (eyelash curler for the entire eyelash area, eyelash curler for partial eyelashes).

<First embodiment>
FIG. 1 is an overall perspective view of an eyelash curler according to a first embodiment of the present invention. FIG. 2 is an overall perspective view of the eyelash curler of the first embodiment, viewed from a different direction from FIG. FIG. 3 is an exploded view of the eyelash curler of FIG. 1.

The eyelash curler 1 of this embodiment has a configuration similar to a general metal eyelash curler, and is integrally formed for each member using resin, which will be described later.

The eyelash curler 1 includes a fixing member 10, a force point member 20, and an action member 30.

The fixing member (also referred to as a support section) 10 has an upper press section 11, parallel struts 12A, 12B, inclined struts 13A, 13B, an arm 14, and a handle 16. A support hole 15 is formed in the arm 14, which is the handle. The arm 14 also exists above the support hole 15, and above the support hole 15 is a merging portion 141J that merges with the inclined columns 13A and 13B.

The upper press portion (also referred to as a contact member, upper clip, or frame) 11 is a portion that comes into contact with the upper surface of the upper eyelashes when curling the upper eyelashes.

The parallel struts 12A and 12B are integrally formed and connected from both ends of the upper press part 11 in the width direction, and extend in the vertical direction. The upper ends of the inclined struts 13A and 13B are connected to the lower ends of the parallel struts 12A and 12B, and the lower end is narrowed in a V-shape, and the lower ends are connected to the arm 14. The parallel columns 12A, 12B and the inclined columns 13A, 13B function as column sections.

The arm (also referred to as a first arm portion, handle portion, or shaft portion) 14 is an extension portion that connects the inclined support columns 13A, 13B and the handle 16. Further, in this example, the arm 14 extends in the same direction as the straight portion 161 (see FIG. 3) that is the inner portion of the handle 16.

The handle (handle, finger ring, grip, grip portion) 16 is ring-shaped with a finger hole into which a finger can be inserted. The user's thumb is often inserted into the finger hole of the handle 16 when the user curls his or her upper eyelashes. Alternatively, when having the upper eyelashes curled by a practitioner such as a makeup artist, or when curling the lower eyelashes by oneself, the practitioner's index, middle, or ring finger is inserted into the finger hole of the handle 16. There are many cases.

In the present invention, the fixing member 10 includes a handle 16, an arm 14 extending in the vertical direction, and a pair of support columns 12A and 13A that branch from the arm 14 into two and support both ends of the upper press section 11. , 12B, 13B and the upper press part 11 are integrally formed.

Further, referring to FIG. 3, small holes 151A and 151B are formed in the side surfaces (side walls) on both sides forming the support hole portion 15 formed in the arm 14, passing through in the width direction. Note that in this configuration, the side surface defining the support hole 15 is wider than the other parts of the arm 14, but it may have the same width as the other arms 14.

The force point member 20 has arm parts 21 and 24 and a handle 25. The tip side arm 21 is formed with a tip hole (tip engagement hole) 22 which is a first engagement hole, and a fulcrum hole (fulcrum engagement hole) 23 which is a second engagement hole.

The arm portions (also referred to as second arm portions, handle portions, and shaft portions) 21 and 24 have different extending directions, and the distal arm 21 that extends from the distal end beyond the connecting portion is different from the distal arm 21 that extends beyond the connecting portion. It has a central arm 24 extending in the same direction as a straight section 251 (see FIG. 3), which is the inner part of the hand 25.

The distal arm 21 of the force point member 20 is inserted into the support hole 15 of the fixing member 10 from the distal end opposite to the handle 25, and is inserted into the support hole 23 and the small side of the support hole 15. With the holes 151A and 151B aligned, the pin shaft PS2 is locked so as to pass through the fulcrum hole 23 and the small holes 151A and 151B.

This engagement allows the force point member 20 to rotate relative to the fixed member 10 about the pin shaft PS2 as the rotation axis. That is, the force point member 20 rotates using the principle of the first type of lever, with the handle 25 as the force point, the engagement portion with the fixed member 10 as the fulcrum, and the upper end portion as the point of action.

When the force point member 20 is rotated relative to the fixed member 10, the arm 14 of the fixed member 10 and the arm portions 21 and 24 of the force point member 20 shown in FIG. 3 are stress generation ranges. The stress generation range includes the maximum stress generation location where the stress is greatest during use. Note that the stress generation range is a region where relatively large stress is generated, and stress is also generated in other regions.

The handle (handle, finger ring, handle, grip part) 25 has a ring shape with a finger hole formed therein for the finger to enter. For example, the user's index finger, middle finger, or ring finger is often inserted into the finger hole of the handle 25 when the user curls his or her upper eyelashes. Alternatively, when having the practitioner curl the eyelashes or curling the lower eyelashes by oneself, the practitioner's thumb is often inserted into the handle 25.

In the force point member 20, a handle 25 and extending arm parts 21, 24 are integrally formed. It is.

As described above, the distal arm 21 is provided with a fulcrum hole 23 serving as a fulcrum and a distal hole 22 serving as a point of action, and the central arm 24 extends obliquely with respect to the distal arm 21. . Moreover, the central arm 24 extends in the same direction as the straight part 251 (see FIG. 3) that is the inner part of the handle 25. Due to the inclination of the arm parts 21 and 24 of the force point member 20, the straight part 251 of the handle 25 that extends continuously from the arm 24 becomes approximately parallel to the straight part 161 of the handle 16 that continuously extends from the arm 14. Therefore, you can apply force without wasting it.

Further, with reference to FIGS. 1, 2, and 3, in the fixed member 10, the handle 16 branches from the lower end of one arm 14 in the thickness direction y (see FIG. 6C) at a branch point BP1. , a finger hole is formed by a straight part 161 extending straight from the arm 14 and a curved part 162 that bulges out in the first thickness direction from the lower end of the straight part 161 and returns to the branch point BP. ing.

In addition, in the force point member 20, the handle 25 is branched in the thickness direction from the lower end of the central arm 24 of the arm portions 21 and 24 constituted by one arm at a branch point BP2, and the handle 25 is a central portion of the arm portion. A straight portion 251 extends linearly from the arm 24, and a curved portion 252 swells from the lower end of the straight portion 251 in a second thickness direction opposite to the first thickness direction, folds back, and returns to the branch point BP2. is configured to form a finger hole.

In this embodiment, the finger holes formed in the handles 16 and 25 have a teardrop shape.

The action member (interlocking part, elevating part) 30 has a lower press part 31, link parts 32A, 32B, and a connecting part 33.

When curling the upper eyelashes, the eyelash curler 1 is held in the state shown in FIG. Push up from the bottom to curl the upper eyelashes upward.

Further, when curling the lower eyelashes, the eyelash curler 1 is held upside down compared to the one shown in FIG. Curl your lower eyelashes downward.

The link portions (elevating columns) 32A and 32B have upper ends connected to the lower press portion 31, are inclined in a substantially V shape, and have lower ends connected to the connecting portion 33.

Further, in this embodiment, a merging portion 332J is provided on the upper end side of the connecting portion 33, where the link portions 32A and 32B merge in front of the engagement groove portion. The merging portion 332J reinforces the narrowest link portions 32A and 32B in the eyelash curler 1.

The connecting portion 33 has an engaging groove shape with a three-dimensional tip having a U-shape. Small holes 331A and 331B are formed in the side surfaces on both sides forming the connecting portion 33, passing through in the width direction.

The tip of the tip side arm 21 of the force point member 20 is inserted into the inside of the U-shape of the connecting portion 33 of the action member 30, and the tip hole 22 and the small holes 331A, 331B on the side surface of the connecting portion 33 are aligned. , is locked by the pin shaft PS1 so as to pass through the tip hole 22 and the small holes 331A and 331B.

Due to this engagement, when the force point member 20 rotates about the pin shaft PS1 as the rotation axis, the action member 30 can move up and down in conjunction with it.

Further, at both left and right ends of the lower press section 31, substantially circular (hook-shaped) engaging hooks (engaging portions, both end hooks) 311A and 311B are provided. By engaging the engagement hooks 311A and 311B with the pair of parallel supports 12A and 12B, the lower press part 31 can slide along the parallel supports 12A and 12B of the fixing member 10.

Although FIG. 3 shows an example in which the engagement hooks 311A and 311B are opened laterally (in the depth direction), in this embodiment, the engagement hooks 311A and 311B are opened in the rear direction (in the depth direction) when viewed from the front. 2) may be open.

Note that a clipper rubber CR (see FIG. 2), which is an elastic member, is sandwiched on the upper surface of the lower press section 31. Therefore, a groove portion 312G for sandwiching the clipper rubber CR is formed on the upper surface of the lower press portion 31.

With this configuration, when the handle 25 on the one end side is moved closer to the handle 16, the force point member 20 moves the pin shaft PS2, which is the connection part between the fulcrum hole 23 and the small holes 151A and 151B, to the fulcrum (fulcrum B ), the tip hole 22 connected to the connecting portion 33 with the working member 30 on the other end side moves in the direction opposite to the movement of the handle 25, and the working member 30 moves toward the pin axis PS1. Along with this, it is pushed up.

As a result, by moving the handle 25, the action member 30 allows the engagement hooks 311A, 311B to slide along the parallel struts 12A, 12B of the fixing member 10, as the tip hole 22 moves up and down. The lower press section 31 is raised and lowered.

Further, the effort member 20 moves the action member 30 up and down by rotating about a part of the fixed member 10 as a fulcrum.

The lower press part 31 of the action member 30 approaches the upper press part 11 of the fixing member 10, and applies pressure (clamps) to the eyelashes between the clipper rubber CR and the upper press part 11, thereby tightening the eyelashes. Add a habit.

FIG. 4A is a front view of the eyelash curler 1 of the first embodiment, and FIG. 4B is a rear view of the eyelash curler 1 of the first embodiment.

4A and 4B, when the direction perpendicular to the direction in which the force point member 20 rotates is defined as the depth direction, in the fixed member 10, at least a portion of the arm (first arm portion) 14 and a first The widths (x1) of the handles 16 in the depth direction are the same. Further, in the force point member 20, the width (x1) in the depth direction of the central arm 24, which is at least a part of the second arm parts 21, 24, and the second handle 25 are equal.

Referring to FIGS. 1 to 4B, the straight portion 161 and the curved portion 162 of the first handle 16 and the straight portion 251 and the curved portion 252 of the second handle 25 overlap in the depth direction.

Here, "equal width" and "overlapping" mean not only things that are completely equal or completely overlapped, but also things that include a certain amount of error and even partially overlap. do. For example, the straight portions 251, 161 and the curved portions 252, 162 may have different widths, in which case the thicker portions partially overlap the thinner portions in the depth direction.

Further, referring to FIGS. 1 to 4B, in the present embodiment, the arm 14 extends as one from the branching point to the handle 16, and the width (depth) and height (thickness) of the handle 16 are is the same thickness as the width and thickness of the arm 14 in the depth direction.

With this configuration, the pinching force from the fingers is transmitted from the handles 16 and 25, which have the same thickness and overlap in the depth direction, through the arm parts 14, 21, and 24 which have the same width and extend in the same direction. Since it is applied straight, the force of pinching the eyelashes is easily transmitted.

In the eyelash curler 1, the fixing member 10, the force point member 20, and the action member 30 are each integrally made of resin, and the details of the resin will be described later.

In addition, in this embodiment, in the connection part between the force point member 20 and the action member 30, and the connection part between the fixed member 10 and the force point member 20, a pin shaft (PS1, Although the pin shafts PS1, PS1 are rotatably fixed by PS2), the material constituting the pin shafts PS1, PS1 may be any material such as resin or metal.

Note that if the pin shafts PS1 and PS2 are made of resin, all of the constituent elements constituting the eyelash curler 1 will be made of resin, and a complete metal-free system can be realized.

<Comparative example>
5A and 5B are diagrams of a metal eyelash curler as a comparative example. The eyelash curler 9 shown in FIGS. 5A and 5B is an example of a general metal eyelash curler. FIG. 5A is a front perspective view of a metal eyelash curler 9 as a comparative example, and FIG. 5B is a rear perspective view of a metal eyelash curler 9 as a comparative example.

The structural differences between the metal eyelash curler 9 and the eyelash curler 1 of the present invention shown in FIG. 1 will be explained below.

In the metal eyelash curler 9 shown in FIGS. 5A and 5B, the fixing member 70 is bonded after the upper press part (metal frame) 11 and the thin metal rod are formed separately. The force point member 80 is formed by deforming a single thin metal rod. In the working member 90, a lower press part (metal frame) 91 and a thin metal rod are separately formed and then bonded together.

Specifically, in the fixing member 70, a metal rod is processed so that the lower end is twisted into a ring shape to form a handle 76, and the upper ends corresponding to the parallel supports 72A and 72B of the metal rod are opposed to each other. Make a long vertical cut hole in the part. At this time, two thin metal rods (741, 742) come into contact with each other in the arm 74, which is twisted into a ring shape at the lower end and extends from the support sections 72A, 73A, 72B, 73B to the front of the handle 76. lined up or close together. Then, the upper press part 71 and the parallel columns 72A, 72B are connected by inserting a metal frame into the notch in the inner surface of the tips of the parallel columns 72A, 72B, which are metal rods, and welding them.

In the force point member 80, the lower end is twisted into a ring shape to form a handle 85, and the arm parts 81 and 84, which are the extension parts from the handle 85 to the tip, are made of two thin metal rods (811, 812), ( 841, 842) are lined up in contact with each other.

In the action member 90, the end of a metal rod made by bending a piece of metal into a substantially V-shape is welded to the lower press part 91, which is a metal frame, thereby connecting the link parts 92A, 92B and the lower part. The press part 91 is connected.

In addition, in the action member 90, when the substantially V-shaped apexes of the link portions 92A, 92B are connected to the force point member 80, a thin metal rod is inserted into the tip engagement hole 82 of the force point member 80. The upper ends of the link parts 92A, 92B are welded to the lower press part 91 in the bent state of the link parts 92A, 92B. In this way, since the shaping of the working member 90 and the connection between the working member 90 and the force point member 80 are performed simultaneously, the working member 90 and the force point member 80 are not attached to each other after manufacturing.

In this configuration, in the fixing member 70 and the force point member 80, the handles 76 and 85 forming the ring are as thin as one arm compared to the two arms 74 (81, 84). The handles 76 and 85 have a narrow cylindrical cross section and have poor holding properties.

On the other hand, since the eyelash curler 1 of the present invention is made of resin, the fixing member 10 and the force point member 20 have only one arm 14, (21, 24), and the handles 16, 25. They are the same thickness.

In this way, in the configuration of the present invention, in the fixed member 10 and the force point member 20, the cross-sectional shape of the handles 16, 25 is made the same thickness as the arm parts 14, 21, 24, so that the handles 16, 25 are made thicker. This improves the holdability, and even if you apply force, it won't get stuck in your finger and it won't hurt, so you can apply sufficient force.

Furthermore, in the eyelash curler 1 of the present invention, with reference to FIGS. 3, 4A, and 4B, the straight part 161 and the curved part 162 of the first handle 16, and the straight part 251 and the curved part of the second handle 25. The portion 252 overlaps in the depth direction.

Therefore, the force is applied more straightly to a handle that overlaps in the depth direction than to a handle that is twisted between a straight part and a curved part, as in the metal configuration shown in Figures 5A and 5B. Therefore, it is easier to operate and it is easier to apply force to the eyelashes.

In addition, in the metal eyelash curler 9, the arm 74 of the fixing member 70 is composed of two metal rods 741, 742. , the arm 81 of the force point member 80 is sandwiched, and the arm 81 is engaged with the sandwiching portion 75 by passing the pin 83 therethrough. Therefore, the upper side of the fulcrum portion where the arm 81 is sandwiched between the sandwiching portions 75 is exposed. Using this configuration, when the force point member 80 is rotated relative to the fixed member 70 during eyelash curling, hair, tissue, cotton, etc. However, there was a risk of getting caught.

On the other hand, in the present invention, in the fixing member 10, the joining part 141J is present at the upper end of the arm 21 above the support hole 15 through which the force point member 20 is inserted. The upper side of the fulcrum of the rotating effort member 20 is not exposed. Therefore, even if hair or the like is present nearby, there is a low possibility that it will be caught in the engagement portion between the force point member 20 and the fixing member 10.

<Configuration approximation>
Since the eyelash curler has a complicated shape, the shape was calculated by replacing it with a simple shape.

FIGS. 6A, 6B, and 6C are diagrams that approximate and explain how force is applied in the eyelash curler. FIG. 6A is a diagram showing the positions of the fulcrum and load point in the eyelash curler, and FIG. 6B is a diagram in which the fulcrum and load point of FIG. 6A are protruded and approximated to a simple beam (one side concentrated load). FIG. 6C is a sectional view of the beam portions of the fixing member and the force point member, and corresponds to the D section of FIG. 6A.

At the moment when the eyelash curler is pinched, the rotation of the force point member 20, which is the rotating part of the eyelash curler, is restricted, and it can be considered that there is almost no rotation or movement. Therefore, the connecting part of the eyelash curler shown in FIG. ,B.

The load point C is the handle 25 of the force point member 20, and the load P is the force (grip force) applied from the fingers to the eyelash curler.

Here, the fixed member 10 and the force point member 20 function as "beams" of a simple projecting beam, and when considering the load and action, the fixed member 10 and the force receiving part, as shown in FIG. 6C, The width (depth) (x) and height (thickness) (y) of the cross section of the beam made of the force point member 20 are taken into consideration.

In the description, as shown in FIG. 6A, the direction in which the force point member 20 rotates is referred to as a rotation direction, and the direction orthogonal to the rotation direction is referred to as a depth direction. Further, as shown in FIG. 6C, in the cross sections of the fixing member 10 and the force point member 20, the direction perpendicular to the depth direction is defined as the thickness direction.

As shown in FIG. 6C, the cross sections of the arm 14 and handle 16 of the fixing member 10, the arms 21 and 24 of the force point member 20, and the handle 25, to which force is directly applied, are made of circular metal with varying thickness. In order to increase the cross-sectional area and obtain stronger strength, it is preferable that the shape is a square or a square with rounded corners. However, the structure of the beam having a square cross section as shown in FIG. 6C is one example, and the cross-sectional shape of the beam of the fixing member 10 and the point of emphasis member 20 is not limited to the rectangular shape shown in FIG. However, other shapes such as a circle, an ellipse, and a semicircle may be used.

Furthermore, in the structure of the "protruding simple beam (one side concentrated load)" shown in FIG. 6B, the bending moment MB generated around the fulcrum B is maximum.

Therefore, the present inventor evaluated the case where an external force (load P) is applied to the eyelash curler, which is an object, through a simulation based on an existing eyelash curler made of metal, and selected a resin. The results are shown in FIG. 8A, which will be described later.

7A and 7B are diagrams showing the ratio of dimensions in the force point member. Specifically, FIG. 7A is a diagram showing a configuration example of the eyelash curler 1 of the present invention in consideration of the force ratio and movable angle at the force point member, and FIG. 7B is a diagram showing a configuration example of the eyelash curler 1 in consideration of the force ratio at the force point member. It is a figure showing an example of composition.

When applying the structure of the above-mentioned "protruding simple beam (concentrated load on one side)" to an eyelash curler, the following points are generally known regarding the stress point member.

The eyelash curler 1 performs a curling operation by rotating the force point member 20 and applying force to the action member 30 using the handle 25 as a force point, based on the principle of the first type of lever. Therefore, when the distance between the point of force and the point of application is greater than the distance between the fulcrum and the point of action, the eyelash curling action can be achieved with a lighter force. Therefore, it is well known to design the distance a<distance b as shown in FIGS. 7A and 7B.

In addition, in the force point member 20, the distance a of the section from the fulcrum B to the tip side and the distance b of the section from the fulcrum B to the handle side influence the clamping pressure (pressure to pinch the eyelashes) based on the principle of leverage. In consideration of the effect on the amount of water, it is preferable that a:b=1:3 or more. That is, in the effort member 20, the distance from the fulcrum to the lower end of the effort member 20 is set to be at least three times the distance from the upper end to the fulcrum. In the present embodiment, in the force point member 20, the distance from the fulcrum hole 23, which is the fulcrum that engages with the fixed member 10 by the pin axis PS2, to the lower end of the force point member 20 is determined by The distance is set at least three times the distance from the hole 22 to the fulcrum hole 23.

However, in consideration of portability, a smaller size is preferable, but simply setting the ratio may include a configuration in which the force point member and the fixing member are short, as shown in FIG. 7B, for example. If the force point member 20 is short like this, both the force point and the point of action are close to the fulcrum B, so it is necessary to apply a considerably large force to the handle, and the movable angle at the fulcrum B is increased. Must be set.

Therefore, in this specification, we were conscious of the balance between the feeling of use when pressing the straight part 251 (see Figure 6A) of the handle 25 (see Figure 6A), which is the force point (load point), from the finger hole side and the generation of clamping pressure enough to curl. As a value, when securing the movement amount of the lower press part 31 at 4 mm or more, it is preferable that a=10 mm or more, taking into account the movable angle and how to apply force. That is, in the first embodiment, in the force point member 20, it is preferable that the distance from the tip hole 22 which is the upper end, which is the distance from the upper end to the fulcrum B, to the fulcrum hole 23 located at the fulcrum B position is set to 10 mm or more. be.

<Material selection>
FIG. 8A shows the evaluation results when an eyelash curler is formed and used with a plurality of materials, and FIG. 8B is a diagram showing the possible range based on Young's modulus and section modulus.

In detail, FIG. 8A shows materials having a predetermined cross-sectional area and section modulus, such as SUS304 (stainless steel), nylon 6/10, polyamide (PA), fiber-reinforced resin made by adding 55% glass fiber (GF) to PA, These are evaluation results when polyetheretherketone (PEEK), polybutylene terephthalate (PBT), GF polyamide MXD6, and CF polyamide MXD6 were used to form an eyelash curler having dimensions satisfying FIG. 7A.

In addition, regarding the fiber-reinforced resin "PA+GF55%", the strength was evaluated by changing the cross-sectional area and changing the cross-sectional modulus. By increasing the cross-sectional area, the section modulus increases, and the position on the graph of FIG. 8B moves upward, which may result in better evaluation even for the same material. For example, if the material is "PA + GF55%" and the section modulus is 4.5 (mm ³ ), the strength is not satisfied and the overall judgment is "x", but if the section modulus is 15.05 (mm ³ ), When the section modulus was 36 (mm ³ ), the strength was satisfied and the overall evaluation was “〇”.

In addition, for PBT, even if the cross-sectional area was increased as in "PA + GF55%" (even if the section modulus = 32 (mm ³ )), the strength evaluation was not satisfied and the overall evaluation was not "〇". .

In FIG. 8B, the area surrounded by a square is the recommended range set by simulation. This recommended range is for materials with a Young's modulus of 2,500 to 40,000 (N/mm ² ) and a section modulus of 5 to 40 (mm ³ ).

Note that within this range, the larger the Young's modulus of the resin, the smaller the section modulus can be. That is, the greater the Young's modulus of the resin, the more strength can be ensured even if the resin is made thinner to approximate that of metal. Considering user operability, the section modulus is preferably 30 (mm ³ ) or less, and more preferably 20 (mm ³ ) or less.

Conversely, even if the resin has a small Young's modulus and is weak, if the section modulus is increased, the strength may be met by simulation, but in consideration of operability, it is necessary to The upper limit of the coefficient was set to 40 (mm ³ ).

Therefore, in order to increase the strength of the resin-containing material without increasing the cross-sectional area, it is preferable that the material constituting the eyelash curler be made of a fiber-reinforced resin containing resin and glass fiber (GF). . For example, when glass fibers are added to resins having the same section modulus, the Young's modulus increases and the position on the graph of FIG. 8B shifts to the right.

Further, in addition to or in place of glass fiber, CF (carbon fiber) may be mixed. For example, in a fiber-reinforced resin, it is preferable to incorporate glass fiber (GF) or carbon fiber (CF) in an amount of 30% by mass or more and 65% by mass or less.

By adding GF or CF, the rigidity can be strengthened against deformation and breakage of the resin material itself (for example, PA). For example, the general value of Young's modulus is PA: 1200 to 2900 Mpa, but by adding glass fiber, Young's modulus can be increased (for example, to 4725 Mpa). Additionally, this addition creates a shape that can suppress the generated stress in structural analysis calculations to about 30% of the tensile strength of the resin material itself (for example, PA), which indicates resistance to deformation and breakage. Become. Therefore, the eyelash curler made of reinforced resin can approach the pressure that pinches the eyelashes of a metal eyelash curler.

The resin to be mixed with the glass fibers is not particularly limited as long as the resin can be blended with fibers. For example, examples of resins include polyamide (PA) (including various nylons), polyetheretherketone (PEEK), polyethylene terephthalate (PETG), glycol-modified PET (PETG), polyphenylene sulfide (PPS), polyamide MXD6, etc. be.

Here, polyamide MXD6 is a crystalline thermoplastic polymer obtained from metaxylylene diamine (MXDA) and adipic acid. The GF polyamide MXD6 used here was commercially available Reny (registered trademark) 1022H, in which 50% glass fiber (GF) was blended with polyamide MXD6. As the CF polyamide MXD6, commercially available RenyC408, which is a mixture of polyamide MXD6 and 40% carbon fiber (CF), was used.

In addition, if a resin that has strong strength alone, such as a special polyamide MXD6 alone, has a Young's modulus of 5000 (N/mm ² ) or more even without reinforcement with glass fiber or carbon, As long as the strength can be compensated by simulation, any thickness in the range of section modulus of 5 to 40 (mm ³ ) can be used as the material for the eyelash curler of the present invention.

In addition, even if it is not a special resin, as long as the Young's modulus of the resin is 2500 (N/mm ² ) or more, even if it is nylon 6/10, PEEK, PET, PETG, PPS, etc., it can be used within the above recommended range. By setting a large section modulus, it is possible to form an eyelash curler alone without mixing glass fiber. In this case, the Young's modulus of these resins other than nylon 6/10 is expected to be around 2500 (N/mm ² ) to 5000 (N/mm ² ), so the section modulus during molding should be adjusted within the above recommended range. If it is set a little away from the lower end, for example, 10 (mm ³ ) or more, a predetermined strength can be achieved even with a resin alone, and it can be used as a material for the eyelash curler of the present invention.

Here, for the arm parts 14, 21, and 24, which are the stress generating range of the fixing member 10 and the force point member 20 that are directly subjected to the force of the user's fingers, the stress is within the recommended range of 2500N/mm ³ to 40000N/mm ³ . It is preferable that Young's modulus and section modulus of 5 mm ³ to 40 mm ³ be satisfied.

Note that the section modulus that defines the thickness may be smaller than the recommended range as long as the material satisfies the above-mentioned recommended range of Young's modulus for the link parts 32A and 32B of the action member 30 that is indirectly subjected to force and moves up and down. .

<Partial eyelash curler>
The above embodiment has been described on the assumption that the eyelash curler is a full-area type eyelash curler that pinches the entire eyelash, close to the entire width of the eye, but the eyelash curler having the above-mentioned material and cross-sectional shape of the present invention may also be a partial eyelash curler. .

FIG. 9 is a configuration diagram of a partial eyelash curler according to a modification of the first embodiment of the present invention.

As shown in FIG. 9, the partial eyelash curler 2 has a configuration similar to that of the first embodiment described above, and the width in the depth direction of the upper press part 11P and the lower press part 31P that sandwich the eyelashes is short. Therefore, the spacing between the support portions 12C, 13C, 12D, and 13D of the fixed member 10P and the spacing between the link portions 32C and 32D of the action member 30P are also narrower than in the first embodiment.

The force required to partially curl the eyelashes by sandwiching them between the short width upper press part 11P and lower press part 31P is greater than the force required to curl the eyelashes over the entire width of the eye. It's also small.

Therefore, as shown in FIG. 9, the handles 16 and 25 are also set to have narrow widths when no force is applied so that the rotational range of the force point member 20P is narrow.

In this structure as well, by forming the resin using a resin whose Young's modulus and section modulus are within the recommended ranges shown in Figure 8B, strength is ensured and the metal shape is not made larger than a general metal shape. Eyelashes can be curled using the same procedure as for eyelashes.

Furthermore, since the partial eyelash curler 2 shown in Figure 9 requires less force than the full-area type, the section modulus that defines the thickness may be smaller than the recommended range as long as the material satisfies the Young's modulus within the recommended range. .

Also, in this configuration, in the fixing member 10P, there is a merging portion 141J that merges with the inclined struts 13C and 13D at the upper end of the arm above the engaging portion, so even if hair or the like is present, the focus will be It is possible to prevent the member from being caught in the engagement portion between the member and the fixing member.

Furthermore, in this configuration as well, since the straight portions and curved portions of the handles 16 and 25 overlap in the depth direction, force is applied straight, making it easier to operate and applying force to the eyelashes.

<Second embodiment>
FIG. 10 is an overall perspective view of an eyelash curler 3 according to a second embodiment of the present invention. FIG. 11 is an overall perspective view of the eyelash curler 3 of the second embodiment viewed from a different angle from FIG. 10. FIG. 12 is an exploded view of the eyelash curler 3 of the second embodiment.

In this embodiment, the material etc. is the same as the resin used in the first embodiment, but the engagement between the fixed member and the force point member (fulcrum) and the engagement between the force point member and the action member (action point) ) have different hinge configurations, etc.

As shown in FIG. 12, in the present embodiment, a fitting groove 53, which is a fitting groove (indentation) in which the lower side of the hinge is recessed, is formed in a portion of the force point member 50 slightly away from the tip.

As shown in FIG. 12, in the fixing member 40, a support hole 45 formed in the arm 44 is provided with a fitting fulcrum shaft 48 extending in the width direction (depth direction).

Then, with the distal end arm 51 of the force point member 50 inserted into the support hole 45 of the fixing member 40 from the upper end side, the force point member 50 is pushed into the fixing member 40 from above to below, and the force point member 50 is pushed into the support hole. 45, the fitting groove 53 engages with the fulcrum shaft 48, thereby connecting the force point member 50 and the fixing member 40.

The fulcrum shaft 48 of the fixed member 40, which is fitted into the fitting groove 53 of the force point member 50, becomes the second fulcrum (fulcrum B in FIG. 6A), so that the force point member 50 rotates with respect to the fixed member 40. Can be freely connected.

Although FIG. 12 shows an example in which the fulcrum shaft 48 extends across the entire width of the support hole 45, the fulcrum shaft 48, which can fit into the fitting groove 53, extends across the entire width of the support hole 45. It may be in the shape of protrusions on both sides that protrude from the inner surface and are interrupted at the center.

The arm 44 also exists above the support hole 45, and above the support hole 45 there is a merging portion 441J that merges with the inclined columns 43A and 43B. Therefore, even if the fulcrum is not exposed and there is hair, tissue, cotton, etc. nearby, it can be prevented from being caught in the engagement portion between the force point member 50 and the fixing member 40.

Further, the action member 60 is provided with a lower press part 61 and link parts 62A and 62B whose one ends are connected to the lower press part 61.

Further, at both left and right ends of the lower press portion 61, substantially circular (hook-shaped) engaging hooks (engaging portions) 611A and 611B with a portion missing are provided. In this embodiment, the engagement hooks 611A and 611B are open at the rear in order to facilitate attachment and detachment of the action member 60 to and from the fixing member 40 during assembly. When the engagement hooks (rear hooks) 611A, 611B engage with the pair of parallel columns 42A, 42B, the action member 60 can slide along the parallel columns 42A, 42B of the fixed member 40. .

In this configuration, the other ends of the link parts 62A, 62B are bent into a U-shape and formed integrally, and the part connecting the other ends of the link parts 62A, 62B is a cylindrical fitting. It is a cylinder 63. The fitting tube 63 is an engaging portion of the action member 60.

A fitting hook 52 having a concave upper side is formed at the tip of the force point member 50.

Then, by pushing the force point member 50 upward into the action member 60, the fitting hook 52 engages with the fitting cylinder 63, and the force point member 50 and the action member 60 are connected. In this manner, the fitting hook 52 of the force point member 50 and the fitting cylinder 63 of the action member 60 are fitted, so that the action member 60 becomes movable in conjunction with the point of action of the force point member 50.

In this way, the connection between the fixed member 40 and the force point member 50 (the second fulcrum B in FIG. 6A) and the connection between the force point member 50 and the action member 60 (the first fulcrum A in FIG. 6A) are formed in the hook shape. By realizing this, it is possible to attach, remove, etc. without using a shaft that penetrates the component for connection.

Therefore, without using the metal pin shafts PS1 and PS2 for connecting the respective members in the first embodiment, it is possible to realize completely metal-free engagement portions between the constituent elements.

Further, since the engaged state can be released by applying force in the direction in which the hook comes off, disassembly and assembly can be realized by the user's hands. For example, if the eyelash curler 3 becomes dirty, it can be disassembled and cleaned, allowing cleaning down to the small irregularities of the engaging part, and then reassembling it, making it possible to maintain cleanliness down to the smallest detail. can.

In addition, even if a load is suddenly applied in a makeup bag or other luggage, the hooks can be released and damage can be avoided. At this time, since the direction of engagement is opposite between the first fulcrum A (see Figure 6A) and the second fulcrum B, if a strong force is applied in one direction, the first fulcrum A and the second fulcrum Since only one of the fulcrums B is disengaged, if the engaged state is unexpectedly disengaged, it can be easily restored.

Further, a fitting hook 52 with a concave upper side is provided at the tip of the distal arm 51 of the force point member 50, and a fitting hook 52 with a concave lower side is provided at a portion of the distal arm 51 closer to the tip than the handle 55. A groove 53 is formed, and the arm portions (second arm portions) 51 and 54 extend as one from the tip to the handle 55.

Therefore, in the eyelash curler 3 of this embodiment, unlike the metal one, the handles 46, 55 are made as thick as the extending parts (arm parts 44, 51, 54), as in the first embodiment. Therefore, it is possible to improve the holding property compared to metal.

Here, in order to satisfy the ratio of FIG. 6A, in this embodiment, in the force point member 20, the distance from the fitting groove 53, which is the fulcrum that engages with the fixed member 40, to the lower end of the force point member 50 is set to the upper end. The distance is set at least three times the distance from the fitting hook 52 that engages with the action member 60 to the fitting groove 53.

Also in this specification, the distance from the fitting hook 52, which is the upper end, to the fitting groove 53, which is the fulcrum, is set to 10 mm or more so as to ensure the amount of movement of the lower press part 31 to be 4 mm or more.

Referring to FIG. 12, in the center arm 54 of the force point member 50, a portion closer to the handle 55 than the fitting groove 53, and on the leading surface in the rotation direction, is formed with undulating irregularities.

The wavy and uneven shapes 541 and 542 improve the fit. Particularly, when applying makeup by oneself, the user inserts the thumb into the finger hole of the handle 46 on the fixed member 40 side, and other fingers into the finger hole of the handle 55 on the power point member 50 side. When the middle finger, which is the most likely to apply force, is inserted into the finger hole of the handle 55, or when the ring finger is inserted into the finger hole, the wavy uneven shapes 541, 542 cause the index finger and middle finger to also support the force point member 50, Operation becomes stable.

Furthermore, a finger rest (also referred to as a finger rest) 56 is provided at the rear end of the handle 55. For example, when the user curls his or her own eyelashes, the user inserts the middle finger into the finger hole of the handle 55 on the side of the emphasis member 50 and the ring finger into the finger hook 56, or The index finger is inserted into the finger hole and the middle finger is inserted into the finger rest 56, or the ring finger is inserted into the finger hole of the handle 55 on the side of the force point member 50, and the little finger is inserted into the finger rest 56.

No matter which finger is inserted in this way, the eyelashes are curled because the emphasis member 50 is supported by the wavy uneven shapes 541, 542 and the finger hook 56 with a finger other than the finger inserted into the finger hole of the handle 55. When pushing, the burden on one finger is shared, and the movement is stabilized.

Furthermore, hit points 47 and 57 are provided at the portions that face the handle 46 of the fixing member 40 and the handle 55 of the force point member 50 when closed, respectively.

When pressing the eyelashes, the tips of the hit points 47, 57 of the handles 46, 55 come into contact with each other, thereby preventing excessive rotation of the force point member 50 with respect to the fixing member 40.

Note that rotation is regulated by providing hit points 47, 57 on the inner edges of the handles 46, 55, so that, for example, when the clipper rubber (not shown) is crushed and thinned due to repeated use, it may be difficult to push it in. There is a risk that the clamping pressure of the press section during the process may not be sufficient. Therefore, when setting the hit points 47, 57, it is preferable to set the length, etc., including when the clipper rubber is crushed.

13A and 13B are a front view and a back view of the eyelash curler 3 of the second embodiment.

13A and 13B, when the direction perpendicular to the direction in which the force point member 50 rotates is defined as the depth direction, in the fixed member 40, at least a portion of the arm (first arm portion) 44 and the handle 46 have the same width (x2) in the depth direction. Further, it can be seen that in the force point member 50, at least a portion of the second arm portions 51, 54 and the handle 55 have the same width (x2) in the depth direction.

In addition, in this embodiment, since the corrugated uneven shapes 541, 542 and the hit points 47, 57 are provided, the thickness (height) of the beams of the arm parts 44, 51, 54 and the handles 46, 55 in the rotation direction and the width is not uniform.

However, also in this embodiment, the center lines CL of the arms 44, 51, 54 in the depth direction (width x2 direction) extend in the same direction as the center lines CL of the handles 46, 55, and overlap with each other. Therefore, during operation, the pinching force from the fingers is applied straight from the handles 46, 55 via the arm portions 44, 51, 54 extending on the same center line, so that the force of pinching the eyelashes is easily transmitted.

Further, with reference to FIGS. 10, 11, and 12, in the fixed member 40, the handle 46 branches from the lower end of one arm 44 in the thickness direction at a branch point BP1, and extends from the arm 44 in a straight line. A finger hole is formed by a straight portion 461 extending from the lower end of the straight portion 461 and a curved portion 462 that swells in the first thickness direction from the lower end of the straight portion 461 and returns to the branch point BP1.

In addition, in the force point member 50, the handle 55 branches in the thickness direction from the lower end of one arm part 51, 54 at a branch point, and extends in a straight line from the central arm 54 which is a part of the arm parts 51, 54. A finger hole is formed by a straight portion 551 that extends from the lower end of the straight portion 551 and a curved portion 552 that swells from the lower end of the straight portion 551 in a second thickness direction opposite to the first thickness direction and returns to the branching point. is configured to do so.

In this embodiment, the finger holes formed in the handles 46 and 55 have a substantially semicircular shape.

Referring to FIGS. 10 to 13B, the straight portion 461 and curved portion 462 of the handle 46 of the fixed member 40 and the straight portion 551 and curved portion 552 of the handle 55 of the force point member 50 overlap in the depth direction. .

Furthermore, in this configuration as well, since the straight portions and curved portions of the handles 46 and 55 overlap in the depth direction, force is applied straight, making it easier to operate and applying force to the eyelashes.

In this embodiment as well, by using a resin that falls within the practicable range defined by the section modulus and Young's modulus shown in FIG. 8B, it is possible to achieve the same stress with the same bending and clamping pressure as those made of metal. Therefore, while improving the holdability of the handle, it also maintains strength without increasing the size of the metal shape, and can be operated in the same way as metal eyelash curling effects.

In addition, in the second embodiment, in a configuration in which the point of action (fulcrum point A) and the fulcrum point (fulcrum point B) are engaged using the hooks and grooves of the constituent elements, the wavy uneven shapes 541, 542 and the hit points 47, 57 are Although the provided example is used, the undulating shape and hit points may be applied to the first embodiment in which the pin shaft engages.

Alternatively, in the configuration of the second embodiment in which the components are engaged with each other using hooks and grooves, the corrugated uneven shapes 541 and 542 and the hit points 47 and 57 may not be provided.

Furthermore, in the configuration in which the point of action and the fulcrum are engaged using the hooks and grooves of the constituent elements, the beams of the arm portions 14, 21, 24 and the handles 16, 25 are In addition, the thicknesses may also be made equal.

Furthermore, in the first embodiment, the handle has a teardrop-shaped finger hole, and in the second embodiment, the handle has a semicircular finger hole. However, the shape of the finger hole is reversed. Alternatively, it may be circular, oval, or the like. Furthermore, the handle may have a shape in which the periphery of the branching point of the curved portion is interrupted.

Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to such specific embodiments, and within the scope of the embodiments of the present invention described in the claims. Various modifications and changes are possible.

This application claims priority based on Japanese Patent Application No. 2018-174220 filed with the Japan Patent Office on September 18, 2018, and the entire content of Japanese Patent Application No. 2018-174220 is incorporated into this application. do.

1, 3 Eyelash curler 2 Partial eyelash curler 10 Fixing member 11 Upper press part 12A, 12B Parallel support (support part)
13A, 13B Slanted support (support part)
14 Arm (first arm part)
141J Merging part 15 Support hole part 151A, 151B Small hole 16 Handle 20 Power point member 21 Tip side arm (arm part, second arm part)
22 Tip hole (tip engagement hole)
23 Fulcrum hole 24 Central arm (arm part, second arm part)
25 Handle 30 Working member 31 Lower press part (abutting member, upper clamping piece)
311A, 311B Engagement hook (engagement part, hooks at both ends)
32A, 32B Link part 33 Connecting part 331A, 331A Small hole 400 Fixing member 41 Upper press part 42A, 42B Parallel support (support part)
43A, 43B Slanted support (support part)
44 Arm (first arm part)
441J Confluence part 45 Support hole part 46 Handle 47 Hit point 48 Fulcrum shaft 50 Force point member 51 Tip side arm (arm part, second arm part)
52 Fitting hook (connection part)
53 Fitting groove (fitting part, connecting part)
54 Central arm (arm part, second arm part)
541, 542 Wavy uneven shape 55 Handle 56 Finger rest 57 Hit point 60 Working member 61 Lower press part (contact member, upper clamping piece)
611A, 611B Engagement hook (engagement part, rear hook)
62A, 62B Link portion 63 Connection portion A First fulcrum B Second fulcrum C Load point PS1 Pin shaft PS2 Pin shaft

Claims (13)

a fixing member having an integrally formed upper press part;
an operating member in which a lower press part is movable up and down with respect to the upper press part;
a force point member that moves the action member up and down by rotating about a portion that engages with the fixed member as a fulcrum;
The fixing member, the action member, and the force point member are each integrally made of resin,
The fixing member includes the upper press part, a first handle on which a user hangs a finger, a first arm part extending in the vertical direction, and a support hole located above the first arm part. A hole frame portion in which a hole frame portion is formed, and a pair of pillars that branch into two from a confluence portion at an upper end of the hole frame portion and support both ends of the upper press portion are integrally formed,
The force point member includes a second handle on which the user hangs a finger, a second extending arm, and a tip that is located above the second arm and is inserted into the hole frame. The parts are integrally formed,
When the direction perpendicular to the direction in which the force point member rotates is defined as the depth direction, and the direction orthogonal to the depth direction in the cross section of the fixed member and the force point member is defined as the thickness direction,
In the fixing member, the first handle has a ring shape in which a finger hole is formed by branching from the lower end of the first arm portion to one side in the thickness direction, expanding and folding back;
In the force point member, the second handle has a ring shape in which a finger hole is formed by branching from the lower end of the second arm portion to the other side in the thickness direction, expanding and folding back;
In the force point member, the tip portion is narrower in the depth direction than the second handle and the second arm portion;
The width in the depth direction and the thickness in the thickness direction of the first arm part, the first handle, the second arm part, and the second handle are equal to each other,
The first arm portion of the fixing member is composed of one arm, and the second arm portion of the force point member is composed of one arm,
In the fixing member, the first arm portion is longer in the vertical direction than the support hole portion. When the direction perpendicular to the depth direction in the cross section of the fixing member and the force point member is defined as the thickness direction,
In the fixing member, the first handle is a straight line that branches from the lower end of one of the first arms at a branch point in the thickness direction and extends linearly from the first arm. and a curved part that swells from the lower end of the straight part to one side in the thickness direction, folds back, and returns to the branch point,
In the force point member, the second handle is a linear portion that branches from the lower end of one of the second arm portions at a branch point in the thickness direction and extends linearly from the second arm portion. and a ring consisting of a curved part that swells from the lower end of the straight part to the other side in the thickness direction, folds back, and returns to the branch point,
The eyelash curler according to claim 1, wherein the straight part and the curved part of the first handle and the straight part and the curved part of the second handle overlap in the depth direction. A fulcrum hole penetrating in a depth direction perpendicular to a direction in which the force point member rotates is formed in a portion of the force point member that becomes the fulcrum,
Small holes are formed in both side walls of the support hole portion of the fixing member,
The tip of the force point member is inserted from the upper end into the support hole of the fixing member and is locked with a pin shaft so as to pass through the fulcrum hole and the small holes in the both side walls. The eyelash curler according to claim 1 or 2, wherein the pin axis serves as a fulcrum for rotation of the fixing member. The operating member is integrally formed with the lower press part, a link part whose upper end is connected to the lower press part, and a connecting part which is connected to the lower end of the link part,
A tip hole is formed at the upper end of the tip part of the force point member, and the tip hole penetrates in a depth direction perpendicular to the direction in which the force point member rotates, and the connecting part is recessed in a U-shape with respect to the lower end. Small holes are formed on both sides of the
The upper end of the tip of the force point member is inserted into the recess of the connecting portion, and is locked with a pin shaft so as to pass through the tip hole and the small holes on both sides of the connecting portion. The eyelash curler according to any one of claims 1 to 3, wherein the action member is movably coupled to the force point member. In the action member, both left and right ends of the lower press part are hook-shaped both end hooks that are open on both sides in the depth direction,
The eyelash curler according to claim 4, wherein the action member is slidable relative to the fixing member by fitting the hooks at both ends to the pair of support columns. a fixing member having an integrally formed upper press part;
an operating member in which a lower press part is movable up and down with respect to the upper press part;
a force point member that moves the action member up and down by rotating about a portion that engages with the fixed member as a fulcrum;
The fixing member, the action member, and the force point member are each integrally made of resin,
The fixing member includes the upper press part, a first handle on which a user hangs a finger, a first arm part extending in the vertical direction, and a support hole located above the first arm part. A hole frame portion in which a hole frame portion is formed, and a pair of pillars that branch into two from a confluence portion at an upper end of the hole frame portion and support both ends of the upper press portion are integrally formed,
The force point member includes a second handle on which the user hangs a finger, a second extending arm, and a tip that is located above the second arm and is inserted into the hole frame. The parts are integrally formed,
When the direction perpendicular to the direction in which the force point member rotates is defined as the depth direction, and the direction orthogonal to the depth direction in the cross section of the fixed member and the force point member is defined as the thickness direction,
In the fixing member, the first handle has a ring shape in which a finger hole is formed by branching from the lower end of the first arm portion to one side in the thickness direction, expanding and folding back;
In the force point member, the second handle has a ring shape in which a finger hole is formed by branching from the lower end of the second arm portion to the other side in the thickness direction, expanding and folding back;
A wavy uneven shape is formed on the upper surface of the second arm part,
In the force point member, the tip portion is narrower in the depth direction than the second handle and the second arm portion;
The first arm portion, the first handle, the second arm portion, and the second handle have equal widths in the depth direction;
The first arm portion of the fixing member is composed of one arm, and the second arm portion of the force point member is composed of one arm,
In the fixing member, the first arm portion is longer in the vertical direction than the support hole portion. A fitting recess with a concave lower side is formed at the tip of the force point member,
In the fixing member, a fitting protrusion is provided inside the support hole,
The force point member is rotatably connected to the fixing member using a fitting portion where the fitting recess of the force point member and the fitting protrusion of the fixing member are fitted as a fulcrum, so that the force point member is rotatably connected to the fixing member. The eyelash curler according to claim 1, 2, or 6, wherein the force due to the movement is transmitted to the acting member so as to act upwardly. The operating member is integrally formed with the lower press part and a link part whose one end is connected to the lower press part,
A fitting hook with a concave upper side is formed at the upper end of the tip of the force point member,
A fitting cylinder is provided at the other end of the link portion of the operating member,
The fitting hook of the force point member and the fitting tube of the action member are fitted, so that the action member and the force point member are movably connected in conjunction with each other. eyelash curler. In the action member, both left and right ends of the lower press part are hook-shaped rear hooks that open rearward,
The eyelash curler according to claim 8, wherein the working member is slidable relative to the fixing member by fitting the rear hook into the pair of support columns. The resin is a material having a Young's modulus of 2,500 N/mm ³ to 40,000 N/mm ³ , and the resin is a material that has a Young's modulus of 2,500 N/mm 3 to 40,000 N/mm 3 . The eyelash curler according to any one of claims 1 to 9, wherein the tip portion has a section modulus of 5 mm ³ to 40 mm ³ . The resin is polyamide (PA), polyether ether ketone (PEEK), polyethylene terephthalate (PET), glycol-modified PET (PETG), polyphenylene sulfide (PPS), polyamide MXD6, and glass fiber (GF). The eyelash curler according to claim 10, which is a fiber-reinforced resin comprising the following. The eyelash curler according to claim 11, wherein the fiber-reinforced resin is configured by blending the glass fiber (GF) into the resin in an amount of 30% by mass or more and 65% by mass or less. The resin is any one of nylon 6/10, polyetheretherketone (PEEK), polyethylene terephthalate (PET), glycol-modified PET (PETG), polyphenylene sulfide (PPS), and polyamide MXD6,
The eyelash curler according to claim 10, wherein the first arm portion and the hole frame portion of the fixing member, and the second arm portion and the tip end portion of the force point member have a section modulus of 10 mm ³ or more.

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