JPH0634785Y2 - Structure of the opening and closing center of the scissors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a so-called Western scissors in which a pair of scissors pieces are rotatably supported at their opening / closing centers, and relates to the structure of the opening / closing centers thereof. It is a thing.

[Problems to be Solved by Conventional Techniques and Inventions] Conventionally, in this type of scissors, a locking shaft formed in the other scissor piece with respect to a shaft insertion hole formed in one scissor piece. Is inserted and supported so that both scissors pieces are rotatable relative to each other. This locking shaft is made up of a plurality of elastic tongues arranged side by side in a circular shape, and a notch is formed between each elastic tongue.

However, when such a locking shaft is inserted into the shaft insertion hole,
Each notch of the locking shaft was visible from the outer surface side of one scissor piece, and the appearance was poor.

An object of the present invention is to solve the above-mentioned problems by devising the shapes of the shaft insertion hole and the locking shaft.

Configuration of the Invention [Means for Solving the Problem] As shown in the drawings of the embodiments described below, the present invention has a shaft insertion hole 9 formed in an opening / closing center portion 7 of one scissor piece 1 with respect to the other scissors. A locking shaft 14 formed on the inner surface of the opening / closing center portion 13 of the piece 2 is inserted and attached, and the scissors 1 and 2 are rotatably supported by being overlapped with each other on the inner surfaces of the opening / closing center portions 7 and 13. At the tip of the locking shaft 14, a large diameter portion 14a is formed, while a plurality of elastic tongues 10 are attached to the coaxial insertion hole 9 from the outer edge of the shaft insertion hole 9.
Each elastic tongue piece 10 is provided by projecting inward toward the inner surface side of the scissors piece 1.
A notch 11 that opens to the inner surface side of the scissors piece 1 is formed between the outer periphery of the elastic tongue piece and the inner periphery of the shaft insertion hole 9.
By the inner circumference of 10, the locking shaft 14 is inserted and inserted toward the outer surface side of the scissors piece 1, and a locking hole 12 for locking the large diameter portion 14a of the locking shaft 14 is formed on the outer surface side thereof. It was done.

[Operation] In the present invention, with the inner surfaces of the opening / closing center portions 7 and 13 of both scissor pieces 1 and 2 overlapped with each other, the locking hole 12 of one scissor piece 1 locks the other scissor piece 2. When the shaft 14 is inserted, the locking shaft 14 penetrates the locking hole 12 while expanding the elastic tongue 10 toward the notch 11 on the outer periphery by the large diameter part 14a, and the shaft part is inserted into the locking hole 12. To be done. Then, on the outer surface side of the scissors piece 1, the large diameter portion 14 a of the locking shaft 14 is locked to the outer edge of the locking hole 12. Therefore,
Both scissors pieces 1 and 2 are rotatably supported about the locking hole 12 and the locking shaft 14.

In this state, only the locking hole 12 and the locking shaft 14 can be seen from the outer surface side of the one scissor piece 1, and the notch of the locking shaft 14 is eliminated unlike the case of the prior art.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 4 and 6, the main body 3 of the pair of scissors pieces 1 and 2 is integrally formed of plastic and includes a handle portion 4 and a blade mounting portion 5. Blade bodies 6 are attached to the inner surfaces of the blade attachment portions 5 of the scissors pieces 1 and 2 which face each other.

At the opening / closing center 7 of one scissor piece 1, the outer surface is
As shown in FIG. 2, a projection 8 is formed, and a shaft insertion hole 9 is formed in the projection 8. A pair of elastic tongues 10 project from the outer edge of the shaft insertion hole 9 toward the inner edge of the coaxial insertion hole 9, and a pair of notches 10a are formed between the elastic tongues 10. There is. The elastic tongues 10 are formed with notches 11 open to the inside on the outer peripheries, and locking holes 12 are formed between the inner surfaces of the elastic tongues 10 so as to penetrate the inner and outer surfaces of the opening / closing center 7. Is formed in. A dish-shaped enlarged diameter portion 12a is formed at the outer end portion of the locking hole 12. On the inner surface of the opening / closing center portion 13 of the other scissor piece 2, a locking shaft 14 is provided so as to project, and a large diameter portion 14a is formed at the tip thereof. When the locking shafts 14 of the other scissor pieces 2 are inserted into the locking holes 12 of the one scissor piece 1 while the inner surfaces of the open / close center portions 7, 13 of the two scissor pieces 1, 2 are overlapped with each other, By the large diameter portion 14a of the locking shaft 14, both elastic tongues 10 are spread toward the notch 11 side on the outer periphery thereof so that the large diameter portion 14a becomes the locking hole 1
The two scissors pieces 1 and 2 are supported so as to be rotatable with respect to each other around the locking hole 12 and the locking shaft 14 in conformity with the enlarged diameter portion 12a.

In the handle portion 4 of the other scissor piece 1, the opening / closing center portion 7
A leaf spring-shaped contact point portion 15 is integrally formed on the inner surface in the vicinity, and both scissor pieces 1 and 2 are supported so as to be rotatable relative to each other.
The blade bodies 1 and 2 are pressed against each other by the elasticity of the contact point portion 15.

In particular, in this embodiment, the elastic tongues 10 are projected inward in the shaft insertion holes 9 so that the notches 10a between the elastic tongues 10 and the notches 11 on the outer periphery thereof cannot be seen from the outside. At the same time, the locking shaft 14 inserted into the locking hole 12 in the elastic tongue piece 10
Unlike the case of the prior art, no notch is formed, so that from the outer surface side of one scissor piece 1, the protrusion 8 and the locking hole are formed.
Only the large diameter portion 14a of 12 and the locking shaft 14 can be seen, and the appearance is improved.

Effect of the Invention According to the present invention, the elastic tongues 10 project inward in the shaft insertion holes 9 so that the notches 10a between the elastic tongues 10 and the notches 11 on the outer periphery thereof cannot be seen from the outside. In addition, since the engaging shaft 14 inserted into the engaging hole 12 in the elastic tongue piece 10 does not have any notch unlike the case of the prior art,
From the outer surface side of one scissor piece 1, only the locking hole 12 and the locking shaft 14 can be seen, and the appearance is improved.

[Brief description of drawings]

1 is a perspective view of the scissors according to the present embodiment seen from one side of the scissors, FIG. 2 is an enlarged sectional view taken along line XX of FIG. 1, and FIG. 3 is the scissors of the other side of the scissors. 4 is a perspective view showing the inner surface side of one scissor piece, FIG. 5 is a partially enlarged plan view showing the opening / closing center portion thereof, and FIG. 6 is the inner surface side of the other scissor piece. It is a perspective view. 1,2 …… Scissors, 7 …… Opening / closing center, 9 …… Shaft insertion hole, 10
…… Elastic tongue, 10a …… Notch, 11 …… Notch, 12 ……
Locking hole, 12a: Expanding part, 13: Opening / closing center part, 14: Locking shaft, 14a: Large diameter part.

Claims (1)

[Scope of utility model registration request] 1. A shaft insertion hole (9) formed in an opening / closing center portion (7) of one scissor piece (1) and an inner surface of an opening / closing center portion (13) of the other scissor piece (2). The locking shaft (14) is inserted into the scissors, and the scissors pieces (1, 2) are rotatably supported by being overlapped with each other on the inner surfaces of the opening / closing center parts (7, 13) thereof. A large diameter portion (14a) is formed at the tip of the shaft (14), and a plurality of elastic tongues (10) are inserted into the coaxial insertion hole (9) from the outer edge of the shaft insertion hole (9). An inner surface of the scissors piece (1) is provided so as to project toward the inner surface side of the scissors piece (1), and between the outer circumference of each elastic tongue piece (10) and the inner circumference of the shaft insertion hole (9). Forming a notch (11) that opens to the outside, and the locking shaft (14) is inserted through the inner circumference of each elastic tongue (10) toward the outer surface side of the scissor piece (1), and its outer surface Side, the large diameter portion (14a) of the locking shaft (14) is locked. The locking hole (12)
The structure of the opening and closing center of the scissors, which is characterized in that