JP2875149B2 - Structure for preventing nail scattering in nail clippers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nail clipper having a nail scattering prevention cover.

[0002]

2. Description of the Related Art Conventionally, this type of nail clipper is disclosed, for example, in Japanese Utility Model Laid-Open No. 57-45805 and Japanese Utility Model Laid-Open No. 57-4580.
Japanese Patent Application Publication No. 6-No. In this nail clipper, a nail scattering prevention cover has a bottom wall and left and right side walls, and both upper and lower blades are inserted into the cover. The cutting edges at the front ends of the upper and lower blades are hidden by the front ends of the left and right side walls and are not visible from the left and right sides of the nail clipper.

[0003]

When cutting a nail, a user sometimes operates the nail clipper while looking at the left or right side of the nail clipper. In this case, since the user cannot see the upper and lower cutting edges, the user cannot insert the claws between the upper and lower cutting edges or check the degree of the insertion, which makes it difficult to use.

[0004] In consideration of such a point, Japanese Utility Model Application Laid-Open No. 57-9
In the nail clipper disclosed in Japanese Patent No. 9508, the user can see both the upper and lower cutting edges by projecting the upper and lower cutting edges forward from the front ends of the left and right side walls, or by cutting out the front end portions of the left and right side walls. It has become. However, with such a structure, the left and right openings of the upper and lower blades are slightly opened near the upper and lower blade edges, which is not preferable in preventing the claws from scattering.

SUMMARY OF THE INVENTION An object of the present invention is to propose a movable cover interlocking with a nail cutting operation, and to provide a nail clipper which is easy to use and can surely prevent scattering of the nail.

[0006]

As shown in the drawings of the embodiments described later, a nail clipper according to the present invention includes upper and lower blades 2, 3 and a pressing lever 4, and the upper and lower blades 2,
3, the cutting edges 7, 8 are formed facing each other,
Elasticity is provided between the upper and lower blades 2 and 3 so that the blades 7 and 8 approach and separate from each other. The pressing lever 4 is supported on the upper blade body 2 by supporting means, and the cutting edges 7, 8 of the upper and lower blade bodies 2, 3 can be brought into contact with each other against their elasticity.

The nail clipper according to the present invention has both upper and lower cutting edges 7,8.
A cover 24 that closes both side openings S of the upper and lower blades 2 and 3 in the vicinity.
It has. Between the two covers 24 and the pressing lever 4, the two covers 24 are provided with the protruding positions P of the cutting edges 7 and 8 and the openings S.
Interlocking means for moving between the closed position Q and the closed position Q is provided. In a state before use in which the upper blade body 2 is not pressed by the pressing lever 4, the both covers 24 are at the cutting edge projecting position P, and the upper and lower cutting edges 7, 8 project from the both covers 24 at the same position P. I have. In the used state in which the upper blade body 2 is pressed by the pressing lever 4, the both covers 24 are in the open closing position Q, and in the same position Q, both the openings S near the upper and lower cutting edges 7, 8 are closed by the both covers 24. It is supposed to be.

[0008]

In the operating state shown in FIGS. 2 and 4, both upper and lower cutting edges 7,
Since the projections 8 protrude from the covers 24, the user can easily insert claws between the upper and lower cutting edges 7 and 8. 3 and 7
In the after-use state shown in (1), both covers 24 close both side openings S in the vicinity of the upper and lower cutting edges 7, 8, so that scattering of the cut nail pieces is prevented.

[0009]

First Embodiment First, a nail clipper according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 4 to 6, the nail clipper body 1 includes an upper blade body 2, a lower blade body 3, a pressing lever 4, and a support shaft 5. The upper and lower blade members 2 and 3 are made of a metal plate material, are fixed to each other at their rear ends, and extend forward from the fulcrum 6a at the front end of the fixing portion 6 to form a cantilever beam. I have. The cutting edges 7, 8 are formed at the front ends of the upper and lower blades 2, 3 so as to be bent so as to face inward. Through holes 9 and 10 are formed in the upper and lower blades 2 and 3 in the vicinity of the two cutting edges 7 and 8, and a metal support shaft 5 is inserted into the two through holes 9 and 10 so as to be rotatable around its axis. ing. The support shaft 5 includes a head portion 12 and a shaft portion 13. The head portion 12 is locked below the lower blade body 3, and the shaft portion 13 passes through the through holes 9, 10. It protrudes upward. The pressing lever 4 is a metal lever body 1
5 and a plastic decorative body 16. The decorative body 16 is attached to the front side of the lever main body 15, and a force point portion 18 is formed on a forked support portion 17 at the base end of the lever main body 15. It protrudes from the front side. On the upper blade body 2, the lever body 15 is connected to the upper end of the shaft portion 13 of the support shaft 5 by a support pin 19 at a support portion 17 thereof,
The support pin 19 is rotatable around the axis of the support pin 19 which is orthogonal to the axis of the shaft 13. The fixed cover 20 made of plastic has a bottom wall 21 and left and right side walls 22.
The upper and lower blades 2 and 3 are inserted and positioned in the fixed cover 20, the lower side of the lower blade 3 faces the bottom wall 21, and the left and right sides of the upper and lower blades 2 and 3 are left and right side walls. 22 facing. In the vicinity of both edges 7, 8, both upper and lower blades 2,
The front end 3 projects forward from the front end of each of the walls 21 and 22 of the fixed cover 20.

The present embodiment is characterized in that a movable member 23 made of metal is attached to the front end of the fixed cover 20.
The movable body 23 is formed in a U-shape by left and right closing covers 24 and an interlocking plate 25 connecting them, and the left and right closing covers 21 are bent downward at right angles from both left and right edges of the interlocking plate 25. The front end 25a of the interlocking plate 25 and the front ends 24a of the left and right closing covers 24 are aligned on one plane,
The pressure receiving portion 26 on the rear end side of the interlocking plate 25 projects rearward from the rear ends 24 b of the left and right closing covers 24. Interlocking plate 2
5, a circular locking hole 27 is formed between the front end 25a and the pressure receiving portion 26, and the inner diameter thereof is the shaft portion 13 of the support shaft 5.
Is slightly larger than the outside diameter. In the movable body 23, the interlocking plate 25 is placed on the upper blade body 2 near both the cutting edges 7 and 8, the shaft portion 13 of the support shaft 5 is inserted into the locking hole 27, and the left and right The upper blade body 2 between the left and right side walls 22 of the fixed cover 20 so that the closing cover 24 closes the left and right side openings S of the upper and lower blade bodies 2 and 3 in the vicinity of the both blade edges 7 and 8.
It hangs down from the upper interlocking plate 25.

As shown in FIG. 1, when not in use, the pressing lever 4 is superimposed on the upper blade body 2 on the back side of the lever body 15, and the decorative body 16 on the front side of the lever body 15 is turned upward. Has become. In use, as shown in FIGS. 2, 4 and 5, the pressing lever 4 is pivoted about the support pin 19 with respect to the support shaft 5 so as to be raised on the upper blade body 2 or upward. Is rotated together with the pressing lever 4 with respect to the upper and lower blades 2 and 3, and the pressing lever 4 is turned upside down so as to be inclined on the upper blade 2. In this pre-use state, the power point portion 18 of the support portion 17 of the lever main body 15 contacts the pressure receiving portion 26 of the interlocking plate 25 of the movable body 23 on the upper blade 2. The left and right closing covers 24 of the movable body 23 are at the cutting edge protruding position P, and at this position P, the upper and lower cutting edges 7 and 8 are moved to the movable body 23.
Project from the front ends 24a, 25a of the respective plates 24, 25 by a slight distance L forward.

When the lever 4 is pushed downward,
The pressure receiving point 2 of the pressure receiving section 26 is determined by the power point 18 a on the power point 18.
A pressing force F acts on 6a. The pressing force F can be considered separately as a component force Fn perpendicular to the pressure receiving portion 26 and the upper blade body 2 and a horizontal component force Ft parallel to these components.
Due to the horizontal component force Ft, the entire movable body 23 shifts very slightly forward along the upper blade body 2, and the locking hole 2
The inner peripheral surface of the shaft 7 is pressed against the outer peripheral surface of the shaft portion 13 of the support shaft 5.
Due to the vertical component force Fn, the upper blade body 2 pivots downward about the fulcrum 6a of the fixing portion 6 with respect to the lower blade body 3, and the cutting edges 7, 8 of the upper and lower blade bodies 2, 3 as shown in FIG. Abut each other.
At this time, the pressure receiving portion 26 moves downward following the rotation of the upper blade body 2 due to the vertical component force Fn, but the interlocking plate 25 is moved near the locking hole 27 by pressing the locking hole 27 against the shaft portion 13. It does not move downward along the shaft 13. Therefore, FIGS. 3 and 5
In the after-use state shown in FIG. 5, the entire movable body 23 rotates forward around the center 27a of the locking hole 27 on the axis of the shaft portion 13, and the left and right closing covers 24 are in the open closing position Q, At the position Q, the upper and lower cutting edges 7, 8 are hidden in the cover 23, and both side openings S near the cutting edges 7, 8 are closed.

When the force on the lever 4 is released after use, the elasticity of the upper blade 2 automatically returns to the pre-use state shown in FIGS. 2 and FIGS.
In the state shown in FIG. 5, the support shaft 5 is rotated together with the pressing lever 4 with respect to the upper and lower blades 2 and 3 and the pressing lever 4 is rotated.
Is rotated about the support pin 19 with respect to the support shaft 5 so that the back side of the lever main body 15 is overlapped on the upper blade body 2, the state returns to the non-use state shown in FIG.

This embodiment has the following features. (A) In the pre-use state shown in FIGS. 2, 4 and 5, since the upper and lower cutting edges 7 and 8 protrude from the left and right closing covers 24 of the movable body 23, the user puts the nail clipper to the left and the left side. Alternatively, even when viewed from the right side, the upper and lower cutting edges 7, 8 can be seen, so that the claws can be easily inserted between the upper and lower cutting edges 7, 8.
Also, as shown in FIG. 3 and FIG. 7, when the claw where the upper and lower cutting edges 7 and 8 abut each other is cut, the movable body 23 rotates and the left and right closing covers 24 move right and left near the upper and lower cutting edges 7 and 8. Since the openings S on both sides are closed, scattering of the nail pieces can also be prevented.

(B) Pushing operation Not only the pressing force on the upper blade 2 which is the original purpose, but also the operating force on the lever 4 is transmitted from the force point portion 18 to the pressure receiving portion 26 of the interlocking plate 25 of the movable body 23. Since the closing cover 24 of the movable body 23 is rotated,
The openings S on the left and right sides near the upper and lower cutting edges 7, 8 can be easily closed in accordance with the cutting timing of the nail.

(C) Using the horizontal component force Ft of the pressing force F acting on the force point portion 18 of the pressing lever 4 at the time of cutting the claw, the locking hole 27 of the interlocking plate 25 of the movable body 23 is Is pressed against the portion 13, and the frictional force generated by the pressing force eliminates the movement of the locking hole 27 with respect to the shaft portion 13, and the center 2 of the locking hole 27
Since the movable body 23 rotates around 7a, a locking hole 27 is provided in the interlocking plate 25 of the movable body 23, and the support shaft 5 is inserted into the locking hole 27.
With a simple structure in which only the shaft portion 13 is inserted, the movable body 23
Can be used as a rotation fulcrum.

(D) Upper blade 2 normally used in nail clippers
The movable body 23 can be automatically returned from the used state of FIGS. 3 and 7 to the used state of FIGS. 2, 4 and 5 by utilizing the elasticity of the movable body 23. Can be rotated back and forth.

(E) Locking hole 2 of interlocking plate 25 of movable body 23
7, the support shaft 5 is rotatable, and the force receiving portion 26 of the lever 4 is pressed against the pressure receiving portion 26 of the interlocking plate 25.
1, the support shaft 5 and the pressing lever 4 are rotated with respect to the upper and lower blades 2 and 3 and the movable body 23 so that the state shown in FIGS. The pressing lever 4 can be positioned in any state, and despite the structure in which the movement of the pressing lever 4 is transmitted as the rotation of the movable body 23, the pressing lever 4 can be compactly assembled when not in use.

(F) A cover 24 for the movable body 23 is provided only at the left and right openings S near the upper and lower cutting edges 7, 8 which affect the nail cutting operation and the scattering of the nails.
3 is fixed to the left and right side walls 22 of the fixed cover 20.
As a result, the moving portion of the nail scattering prevention cover is reduced and the structure can be simplified.

(G) In the movable body 23, the left and right closing covers 24 are connected by the interlocking plate 25, and the interlocking plate 25 is superposed on the upper blade body 2, so that the left and right closing covers 24 have a simple structure and good stability. While supporting, the movement of the pressing lever 4 can be transmitted to the left and right closing covers 24.

In addition to the above-described embodiment, the following configuration may be adopted. (A) The second embodiment shown in FIG. 8 is the support shaft 5 of the first embodiment.
The shaft portion 13 is composed of a lower large diameter portion 28 continuous from the head 12 and an upper small diameter portion 29 continuous from the large diameter portion 28. Part 2
A step portion 30 is formed between 8 and the small diameter portion 29.
In the movable body 23 of the first embodiment, the inner peripheral edge of the locking hole 27 of the interlocking plate 25 can be locked to the step portion 30. Accordingly, when a pressing force F is applied to the pressure receiving portion 26 of the interlocking plate 25 from the force point portion 18 of the pressing operation lever 4, the movable body 23 is engaged with the movable member 23 while the inner peripheral edge of the locking hole 27 is supported by the step portion 30. Center 27 of stop hole 27
It rotates around a. In this case, since the support of the inner peripheral edge of the locking hole 27 by the step portion 30 functions as a rotation fulcrum, the pressing of the locking hole 27 to the shaft portion 13 as in the case of the first embodiment is not necessarily performed. It is not necessary, and the pressing of the locking hole 27 to the small diameter portion 29 may be omitted in the second embodiment.

(B) In addition, although not shown, the structure of the rotation fulcrum portion of the movable body 23 is such that the movable body 23 is movable with respect to a bracket extending upward from both left and right sides of the lower blade body 3 near the upper and lower cutting edges 7 and 8. The left and right closing covers 24 are supported by a rotation center shaft.

(C) As a means for supporting the pressing lever 4, although not shown, the base end of the lever main body 15 is rotatably supported by a support pin by a bracket similar to the above (b).

Considering the above embodiments, the following concept can be understood. (A) The upper and lower blade members 2 and 3 in claim 1 are fixed to each other at their rear ends, and are supported in a cantilever shape with the fixed portion 6 as a fulcrum, and have elasticity. The cutting edges 7, 8 are formed at the front ends of the upper and lower blades 2, 3.

(B) In the supporting means according to the first aspect, the supporting shaft 5 is attached to the upper and lower blades 2 and 3 in the vicinity of the upper and lower blades 7 and 8.
Is rotatably inserted, the lower end head 12 of the support shaft 5 is locked below the lower blade body 3, and the upper end of the support shaft 5 projects above the upper blade body 2, The pressing lever 4 is rotatably supported on the upper end of the support shaft 5.

(C) In the interlocking means according to the first aspect, a rotating fulcrum for rotatably supporting the left and right closing covers 24 between the blade edge projecting position P and the opening closing position Q, and a pressing operation. And a pressure receiving portion 26 with which the power point portion 18 of the lever 4 abuts.

(D) At the rotation fulcrum in (c), a locking hole 27 formed in an interlocking plate 25 connecting the two closing covers 24 on the upper blade body, and is inserted and fitted into the locking hole 27. The interlocking plate 2 is composed of the support shaft 5 of (b) and the power point portion 18.
5 when the pressure receiving portion 26 is pressed.
7 is pressed and functions as a pivot point.

(E) At the pivot point of (c), the locking hole 27 and the support shaft 5 of (d) and the support shaft 5
(The stepped portion 30 of the support shaft 5)
And an inner peripheral edge of the locking hole 27), and a function that the locking portion is locked by being pressed by the force point portion 18 to be a rotation fulcrum.

[0029]

According to the nail clipper of the present invention, the functions of the two covers 24 make it easy to use and can surely prevent the nail from scattering.

[Brief description of the drawings]

FIG. 1 is a side view showing a non-use state in a nail clipper with a nail scattering prevention cover according to a first embodiment.

FIG. 2 is a side view showing a state before use.

FIG. 3 is a side view showing a state after use.

FIG. 4 is an enlarged sectional view of FIG. 2;

FIG. 5 is a partially enlarged sectional view of FIG. 4;

6 is a partially cutaway front view of the nail clipper shown in FIG. 2;

FIG. 7 is an enlarged sectional view of FIG. 3;

8A is a partially enlarged sectional view showing a state before use in a nail clipper according to the second embodiment, and FIG. 8B is a partially enlarged sectional view showing a state after use similarly.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Nail cutter main body, 2 ... Upper blade body, 3 ... Lower blade body, 4 ... Pressing lever, 5 ... Support shaft, 6 ... Fixed part, 7 ... Blade edge, 8 ... Blade edge,
14 ... Pressing lever, 17 ... Support part, 18 ... Power point part, 1
9: support pin, 20: fixed cover, 23: movable body, 24
... closing cover, 25 ... interlocking plate, 26 ... pressure receiving part, 27 ... locking hole.

Continuation of front page (58) Field surveyed (Int. Cl. ⁶ , DB name) A45D 29/02

Claims (1)

(57) [Claims] An edge (7, 8) is provided on both upper and lower blades (2, 3).
Are formed so as to face each other, and between the upper and lower blades (2, 3), elasticity is provided in a direction in which the blade edges (7, 8) approach and separate from each other. Is a nail cutter in which a pressing lever (4) capable of abutting the cutting edges (7, 8) of the upper and lower blade bodies (2, 3) against each other against its elasticity is supported by supporting means; , 8) near the upper and lower blades (2, 3)
A cover (24) for closing both side openings (S) of the upper and lower blades (7, 8) in a state before use in which the upper blade body (2) is not pressed by the pressing lever (4). The position (P) projecting from (24) and the opening (S) on both sides of the upper and lower cutting edges (7, 8) in the used state in which the upper blade body (2) is pressed by the pressing lever (4) are both covers. (2
4), between the two covers (2)
4) A nail scattering prevention structure in a nail clipper, wherein interlocking means for moving 4) is provided between the pressing lever (4) and both covers (24).