JPH07178261A - Ring handle structure in scissors - Google Patents

Abstract

PURPOSE:To restrain the restraint projection part of a mounting part to the restraint hole of a mounting hole and to prevent the position deviation and dropping by rotating the part of mounting a ring handle auxiliary body after being inserted into the insertion hole of the mounting hole in the ring handle. CONSTITUTION:When a ring handle auxiliary body 8 is installed to a ring circle 6, a head part 13 of a mounting part 10 in the body 8 is inserted into an insertion hole 18 of a mounting hole 17 in the ring circle 6. When a base part 14 and a neck part 12 of the head part 13 are made coincide with a center hole part 19 of the insertion hole 18. A both end restraint projection part 15 of the head part 13 is made coincide with hole parts 20 on both sides of the insertion hole 18 and is placed adjacent to a restraint hole 21 on both sides. Then, the head part 13 is rotated around the base part 14, it is rotated along the center hole part 19 of the insertion hole 18. The part 15 of the head part is rotated along respective circular pressure reception surfaces 20a and 21a of the parts 20 and 21 in the hole 18 and is stopped by being abutted to a stopper surface 21b of the hole 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a finger hook structure in which a ring finger, a little finger, or both fingers can be auxiliary hung outside the finger hook ring when the finger is inserted into the finger hook ring of the scissors handle. Is.

[0002]

2. Description of the Related Art Conventionally, as this type of finger-hooking structure, there is, for example, one in which a male screw portion formed on a finger-hooking assisting body is screwed to the outside of a finger-hooking ring. However, the attachment and detachment was troublesome. In addition, there is one disclosed in US Pat. No. 5,027,514. In this finger-hooking structure, a mounting groove is provided on the outside of one of the finger-hooking rings of both handle parts in a substantially straight line along the opening / closing direction of both handle parts, and the attaching part of the finger-hooking assisting body is attached to this finger-hooking ring. The finger support portion of the finger-holding auxiliary body pushed out from the open end of the groove projects to the outside of the finger-holding ring. Then, when the scissors are used, the ring finger, the little finger, or both of the fingers other than the thumb are hung on the finger-hooking assisting body, and the other fingers are inserted into one finger-hooking ring. The thumb is inserted into the other finger ring. When the scissors are opened and closed in this state, when the handle portions are closed to each other, the finger pressing force acts on the finger-holding assisting body to facilitate the operation of opening and closing the scissors.

[0003]

If the pressing force of the finger is applied to the finger-holding assisting body only in the direction in which both the handle portions are closed in the opening / closing direction of the scissors, the attachment portion of the finger-holding assisting body is removed from the mounting groove of the finger-holding ring. There is no danger of getting out. However, since the scissors are sometimes used in various operating states, this finger-holding auxiliary body may be given a pressing force in the direction to open both handle parts.In such a case, the finger-holding ring is attached. The pressing force of the finger acts in a direction opposite to the direction in which the attachment portion of the finger-holding assisting body is pushed into the groove. Therefore, if you frequently use scissors,
There is a risk that the finger-holding auxiliary body will be displaced slightly and the mounting portion thereof will protrude from the mounting groove, and the finger-holding auxiliary body may fall out of the finger-holding ring. This drawback cannot be eliminated as long as the pushing direction of the finger hanging aid is along the opening and closing direction of the scissors.

An object of the present invention is to improve a structure for mounting a finger-hooking assisting body on a finger-hooking ring to prevent the finger-hooking assisting body from being displaced or falling off.

[0005]

As shown in the drawings of the embodiments to be described later, in scissors embodying the finger hanging structure according to the present invention, a pair of scissor pieces 1 and 2 are rotated by an opening / closing center shaft portion 3. The opening / closing center shaft 3 is provided with a blade 4 which is supported at a position closer to the tip than the opening / closing center shaft 3.
A handle portion 5 is provided on the proximal side of the handle portions 5, and finger handle rings 6 and 7 are provided on both handle portions 5. The finger hooking assisting body 8 is attached to the outside of one finger hooking ring 6.

A finger support portion 9 and a mounting portion 10 are provided on the finger rest assisting body 8. A neck portion 12 extending from the base end portion 9 a of the finger support portion 9 and the neck portion 12 are attached to the attachment portion 10.
And a continuous head 13 are provided. This head 13
Is provided with a locking projection 15 having a step shape with respect to the neck 12.

A mounting hole 17 is provided in the finger hook ring 6. The mounting hole 17 has an insertion / removal hole 18 through which the mounting portion 10 is inserted / removed along a direction B intersecting with the opening / closing direction A of the handle portions 5. The insertion / removal hole 18 is provided with a hole 20 into which the locking projection 15 of the head 13 of the mounting portion 10 is inserted. This mounting hole 17 has this hole 2
The locking hole 21 is provided continuously to 0. This hole 2
0 and the locking hole 21 are provided with stopper surfaces 20b, 21b and pressure receiving surfaces 20a, 21a. On the stopper surfaces 20b and 21b, when the mounting portion 10 is rotated with respect to the mounting hole 17 in the insertion / removal direction B, the locking projection 15 is formed between the hole portion 20 and the locking hole 21. It is regulated to rotate by a predetermined range angle B. This pressure receiving surface 20a, 2
In 1a, the mounting portion 1 along the opening / closing direction A of both handle portions 5
It abuts on the locking projection 15 so as to prevent the movement of 0. A locking wall 22 is provided corresponding to the locking hole 21. In this locking wall 22, the locking projection 15 engaged in the locking hole 21 is prevented from moving in the inserting / removing direction B of the mounting portion 10.

[0008]

When the mounting portion 10 of the finger holding auxiliary body 8 is inserted into the insertion / removal hole 18 of the mounting hole 17 of the finger hanging ring 6 and then rotated, the locking projection 15 of the mounting portion 10 causes the locking projection 15 of the mounting hole 17 to lock. The finger-holding auxiliary body 8 is attached to the outside of the finger-holding ring 6 by being locked by 21.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A scissors finger hooking structure according to an embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the pair of scissors pieces 1 and 2 are rotatably supported by an opening / closing center shaft portion 3, and a blade portion 4 is provided on the tip side of the opening / closing center shaft portion 3 and A handle portion 5 is provided on the base end side of the opening / closing center shaft portion 3. Finger hook rings 6 and 7 made of synthetic resin are attached to the handle portions 5, respectively. On the outer side of one finger hook ring 6 into which a finger other than the thumb is inserted, a finger hook assisting body 8 made of synthetic resin is attached. Next, the mounting structure between the finger hanging ring 6 and the finger hanging auxiliary body 8 will be described in detail.

As shown in FIG. 2, the finger-holding assisting body 8 shown in FIG. 1 comprises a finger supporting portion 9 and a mounting portion 10 projecting from a base end portion 9a thereof. The finger support 9 is slightly bent in one direction,
A finger pressing surface 11 is formed on the curved surface side.

The mounting portion 10 of the finger-holding auxiliary body 8 has a neck portion 12 having a circular cross section which extends from the base end portion 9a of the finger support portion 9.
And a head portion 13 continuous with the neck portion 12. The head portion 13 includes a base portion 14 having a circular cross-section having the same diameter and the same center as the neck portion 12, and locking projections 15 on both sides of the outer periphery of the base portion 14. The locking projections 15 are formed on the base portion 14. There is a point symmetry position of 180 degrees around the center 14a. The end surface 13a of the head portion 13 is flush with the base portion 14 and the two locking projections 15. A step portion 16 is formed between the locking projections 15 and the neck portion 12.

On the other hand, the mounting hole 1 is formed on the outer periphery of the lower end of the finger ring 6.
7 is formed, and this mounting hole 17 has an insertion / removal hole 18. The insertion / removal hole 18 has a shape that matches the head portion 13 of the mounting portion 10, and has a central hole portion 19 into which the base portion 14 of the head portion 13 is inserted and removed and both locking projections 15 of the head portion 13. The side hole portion 20 is inserted and removed. As shown in FIG. 3, each hole 1
The reference numerals 9 and 20 extend to the inner bottom surface 17a of the mounting hole 17, and are open to face the inner bottom surface 17a. As shown in FIG. 5, both side hole portions 20 of the insertion / removal hole 18 are provided in the mounting hole 17.
In succession, both locking holes 21 are formed in a 180-degree point symmetrical position around the center 18a of the insertion / removal hole 18. Both locking walls 22 are formed facing the inner bottom surface 17a of the mounting hole 17 so as to close the both locking holes 21. This side hole 20
Also, arc-shaped pressure receiving surfaces 20a and 21a having the same radius of curvature with respect to the center 18a of the insertion / removal hole 18 are formed in the locking holes 21 so as to be continuous with each other. Also, this both-side hole 2
0 and both locking holes 21 are formed with stopper surfaces 20b and 21b forming a predetermined circumferential angle α with respect to the center 18a of the insertion / removal hole 18 so as to be continuous with and face the pressure receiving surfaces 20a and 21a.

First, the operation of attaching the finger-holding auxiliary body 8 to the finger-holding ring 6 will be described. As shown in FIG. 3, the head portion 13 of the attachment portion 10 of the finger holding auxiliary body 8 is inserted into the insertion / removal hole 18 of the attachment hole 17 of the finger holding ring 6, and the end surface 13 a of the head portion 13 is attached to the inner bottom surface 17 a of the attachment hole 17. Abut. In this inserted state, as shown in FIGS. 4 and 5, the base 14 of the head 13 is
And the neck portion 12 is aligned with the center hole portion 19 of the insertion / removal hole 18, and both locking projections 15 of the head portion 13 are aligned with both side hole portions 20 of the insertion / removal hole 18 and adjacent to the locking hole 21. There is. Then, as shown in FIGS. 6 and 7, the head 13 is attached to the base 1
When the base 14 is rotated around the center 14a, the base 14 is rotated along the center hole 19 of the insertion / removal hole 18, and the both locking projections 15 of the head 13 are moved to the both holes of the insertion / removal hole 18. The arc-shaped pressure receiving surface 20a of the portion 20 and the arc-shaped pressure receiving surfaces 21 of the two locking holes 21.
It rotates along a and stops when it comes into contact with the stopper surfaces 21b of the two locking holes 21. As shown in FIG. 8, the two locking projections 15 in the two locking holes 21 are frictionally sandwiched between the inner surfaces of the two locking walls 22 and the inner bottom surface 17a of the mounting hole 17 and held. To be done.

On the other hand, when the finger-holding auxiliary body 8 is removed from the finger-holding ring 6, the operation opposite to the above-described inserting operation is performed. When the finger-holding auxiliary body 8 is not used, the lid 23 shown in FIG. 9 is used instead. The lid 23 is also provided with a mounting portion 10 similar to the mounting portion 10 of the finger hooking assisting body 8. Then, as shown in FIG.
Attach 3 to finger ring 6. The operation of inserting and removing the lid 23 with respect to the finger hanging ring 6 is the same as in the case of the finger hanging auxiliary body 8.

In particular, this embodiment has the following features. (A) As described above, since the mounting portion 10 of the finger hanging auxiliary body 8 can be inserted into and removed from the mounting hole 17 of the finger hanging ring 6, the finger hanging on the finger hanging ring 6 can be compared with the conventional screw insertion and removal. The auxiliary body 8 can be easily attached and detached. (B) As shown in FIGS. 6 and 8, the mounting portion 10 of the finger-holding assisting body 8 in the direction B orthogonal to the opening / closing direction A of the handle portions 5.
Is inserted into the mounting hole 17 of the finger hanging ring 6, and the force in the opening / closing direction A given to the finger hanging auxiliary body 8 is received by the arcuate pressure receiving surfaces 20a and 21a in the mounting hole 17, so that the finger hanging auxiliary body 8 moves in the opening / closing direction. There is no risk of shifting to A. (C) As shown in FIG. 8, the attachment portion 10 of the finger-holding assisting body 8
Both locking projections 15 are engaged with both locking holes 21 of the mounting hole 17 of the finger ring 6 so that the inner bottom surface 17a of the mounting hole 17 and the locking wall 2
Since they are pressed against each other, the attachment portion 10 can be prevented from being inadvertently rotated toward the insertion / removal hole 18 side of the attachment hole 17. Further, since both locking projections 15 are locked by both locking walls 22, the mounting portion 10 is prevented from moving toward the center 14a thereof, and the finger hooking assisting body 8 is prevented from falling off the finger hooking ring 6. be able to. (D) As shown in FIGS. 4 to 7, in the mounting portion 10 inserted into the mounting hole 17, the rotation of both the locking projections 15 and the stopper surface 20b of the both side hole portions 20 of the insertion / removal hole 18 are caused. Since it is restricted to the predetermined range angle B by the stopper surfaces 21b of both the locking holes 21, its movement is naturally restricted when the finger hooking assisting body 8 is inserted / removed with respect to the finger hooking ring 6, and the insertion / removal operation becomes easy. (E) As shown in FIG.
The direction of passing through the center 14a of the mounting portion 10 and connecting both the locking projections 15 with respect to the opening / closing direction A of the both handle portions 5 from the both side hole portion 20 side of the insertion / removal hole 18 in the state of being attached to Since they are inclined to the side of both locking holes 21 by a predetermined angle θ, both locking projections 15 of the mounting portion 10 are made to face the stopper surfaces of both locking holes 21 of the mounting hole 17 by the pressing force applied to the finger holding auxiliary body 8. 21b, which are pressed into contact with each other, and from both locking holes 21 to both side hole portions 20 of the insertion / removal hole 18.
It becomes difficult to rotate to the side. (F) Since the mounting hole 17 is provided on the finger hanging ring 6 side and the mounting portion 10 is projecting on the finger hanging auxiliary body 8 side, when the finger hanging auxiliary body 8 is removed from the finger hanging ring 6, the finger hanging ring 6 is projected. No part of the installation remains and it does not interfere with the operation. The lid 23 closes the mounting hole 17 as needed.

In addition to the above embodiment, the following structure may be adopted. (A) The locking projection 15 of the mounting portion 10 of the finger-holding assisting body 8 or
The mounting hole 17 of the finger ring 6 into which the locking projection 15 is engaged.
One or three or more locking holes 21 are provided. (B) In the above-described embodiment, the locking projection 15 is press-fitted into the engagement hole 21, but as another locking means, the locking projection 15 and the locking hole 21 are disengaged from each other by the uneven portion. to enable. (C) The cross-sectional shapes of the locking projection 15 and the locking hole 21 may be arbitrarily changed as long as the locking wall 22 can prevent the locking projection 15 from coming off.

[0017]

According to the finger-hooking structure of the scissors according to the present invention, not only can the finger-hooking assisting body 8 be easily attached to and detached from the finger-hooking ring 6, but also the finger-hooking assisting body 8 can be prevented from being displaced or coming off. .

[Brief description of drawings]

FIG. 1 is a front view showing a state in which a finger-hooking assisting body is attached to a finger-hooking ring in two types of scissors according to the present embodiment.

FIG. 2 is a partial perspective view showing a mounting hole for a finger hook ring and a finger hook assisting body in the scissors according to the present embodiment.

FIG. 3 is a partial cross-sectional view showing a state in which the attachment portion of the finger-holding auxiliary body is inserted into the insertion / removal hole of the attachment hole of the finger-holding ring from the state of FIG.

4 is a sectional view taken along line X ₁ -X ₁ of FIG.

5 is a sectional view taken along line X ₂ -X ₂ of FIG.

FIG. 6 is a partial cross-sectional view showing a state in which the finger-holding auxiliary body is rotated and locked from the state of FIG.

FIG. 7 is a view corresponding to FIG. 4 in the state of FIG.

8 is a cross-sectional view taken along line YY of FIG.

FIG. 9 is a perspective view showing a lid used when the finger hanging aid is not used.

FIG. 10 is a front view showing scissors to which the lid is attached.

[Explanation of symbols]

1 ... Scissors piece, 2 ... Scissors piece, 3 ... Opening / closing center shaft part, 4 ... Blade part, 5
... handle portion, 6 ... finger hanging ring, 7 ... finger hanging ring, 8 ... finger hanging auxiliary body, 9 ... finger supporting portion, 9a ... base end portion, 10 ... mounting portion, 12
... neck part, 13 ... head part, 14 ... base part, 15 ... locking projection part, 1
6 ... Step portion, 17 ... Mounting hole, 17a ... Inner bottom surface, 18 ... Insertion / extraction hole, 19 ... Center hole portion, 20 ... Side hole portion, 20a ... Pressure receiving surface, 20b ... Stopper surface, 21 ... Locking hole, 21a ... pressure receiving surface, 21b ... stopper surface, 22 ... locking wall, A ... opening / closing direction, B ... insertion / removal direction.

Claims (1)

[Claims] 1. A pair of scissors pieces (1, 2) are rotatably supported by an opening / closing central shaft portion (3), and a blade portion (4) is provided on the tip side of the opening / closing central shaft portion (3). In addition to providing the handle portion (5) on the base end side of the opening / closing center shaft portion (3), the handle rings (6, 7) are provided on both handle portions (5),
In the scissors in which a finger-hooking assisting body (8) is attached to the outside of one finger-hooking ring (6), the finger-hooking assisting body (8) is provided with a finger support portion (9) and a mounting portion (10). A neck portion (12) extending from a base end portion (9a) of the finger support portion (9) and a head portion (13) continuous with the neck portion (12) are provided in the (10), and the head portion (13) is provided with the head portion (13). A locking projection (15) having a step shape is provided on the neck (12), and a mounting hole (17) is provided outside the finger hook ring (6).
An insertion / removal hole (18) for inserting / removing the mounting portion (10) is formed in the mounting hole (17) along a direction (B) intersecting the opening / closing direction (A) of the both handle portions (5). The insertion hole (18) is provided with a hole portion (20) into which the locking projection (15) of the head portion (13) of the attachment portion (10) is inserted, and the attachment hole (17) is provided. The hole (20) is provided with a continuous locking hole (21), and the mounting portion (10) is provided in the hole (20) and the locking hole (21) with respect to the mounting hole (17). Locking protrusion (15) when rotated around the insertion / removal direction (B)
The stopper surfaces (20b, 21) are rotated so that the shaft rotates between the hole (20) and the locking hole (21) by a predetermined range angle (β).
b) is provided, and the locking projections (1) are provided so as to prevent movement of the mounting part (10) along the opening / closing direction of both handle parts (5).
5) is provided with a pressure receiving surface (20a, 21a) that abuts, and the locking projection (15) engaged in the locking hole (21) moves in the insertion / removal direction (B) of the mounting portion (10). A finger hooking structure for scissors, characterized in that a locking wall (22) for preventing the above is provided corresponding to the locking hole (21).