JPH0230965Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention consists of integrally connecting legs at multiple locations in the circumferential direction of the back surface of the button body, which has a female or male fitting part formed in the center. The present invention also relates to a snap button in which the leg is connected to a leg insertion opening of a stopper seat.

[Conventional technology]

Conventionally, the button body on which the female or male fitting portion of the snap button is formed and the retaining seat coupled to the button body have both been made of metal or synthetic resin.

In the former metal type, the leg formed on the back side of the button body was tapered so that it became thinner toward the tip so that it could be easily driven into the stopper seat, and the leg was attached to the stopper seat by driving it in. . The latter type is described in U.S. Patent No. 3,685,105, etc., and is attached by driving a leg formed on the back side of the button body into the leg insertion opening of the stopper and plastically deforming the leg. was.

[The problem that the idea aims to solve]

In the metal snap buttons mentioned above, the legs are formed in a tapered shape to make it easier to penetrate the base fabric and to make it easier to caulk. This has the drawback that sharp tears occur, which tend to widen when the button is closed or washed, easily damaging the base fabric.Also, when manufacturing snap buttons, processing of the female and male button bodies is troublesome. It was hot. A snap button made entirely of synthetic resin, such as the latter, is known as a solution to these shortcomings, but when this button is cleaned or heated with an iron, the opening for the leg insertion of the resin-molded stopper is lost. There was a drawback that the button body loosened and the joint between the button body and the stopper seat rattled or came off.

The object of the present invention is to provide a suitable snap button which is easy to manufacture, has a strong attachment between the button body and a retaining seat, and is difficult to come off even after attachment.

[Means to solve the problem]

The technical means of the snap button in this invention that was taken to achieve this purpose is a male or female synthetic resin button body with a plurality of plastically deformable legs protruding from the back surface, and a button body made of synthetic resin that can be inserted through the legs. The opening edge of the opening includes a retaining seat made of a sheet metal that has a retaining piece that bites into the leg that deforms plastically.

This provides the following actions and effects.

[Effect]

The impact force that the leg receives during driving is alleviated by the stopper, which is an elastic material, and as the leg is driven in, the leg is plastically deformed and caulked at the back of the leg insertion opening in the stopper. The legs bite into the retaining piece formed on the edge of the opening, and the button body and retaining seat are strongly connected.

[Effects of the invention] The female and male button bodies, which have a relatively complicated structure compared to the stopper seat, are made of synthetic resin, so the button body itself can be easily manufactured by resin molding, so the overall structure is similar to that of a snap. This has the advantage that the button can be manufactured easily.

By driving, the leg is plastically deformed and caulked at the back of the leg insertion opening of the stopper seat, and the retaining piece strongly bites into the leg due to its elastic deformation, making the button body and the stopper strong. It's bonded so it won't come off easily.

Furthermore, the retaining seat made of sheet metal is resistant to heat.
Like the opening for inserting the leg of a synthetic resin retainer, heating such as ironing eliminates the internal stress caused by heat shrinkage, so the opening does not loosen or come off, ensuring a strong installation over a long period of time. can be kept.

Hereinafter, embodiments of the present invention will be described based on the drawings.

The male button body A shown in Figs. 1, 2, and 3 has a male fitting part 1 in the center, and five pin-shaped coupling parts with sharp tips at equal intervals in the circumferential direction. , and a reinforcing rib 3 is provided at the base of the leg 2, extending integrally with the leg 2 and the button body A, and the reinforcing rib 3 is connected to the leg 2
The button body A is tapered toward the center of the button body A as it approaches the center, and the entire button body is integrally molded from a synthetic resin material. There is. Due to the bulge around the free end of the fitting and locking part 1, the female fitting and locking part 1
A retaining portion 4 is formed when the device is inserted into the device. The circumferential groove 5 on the outside of the fitting portion 1 is formed to facilitate the removal of a mold member for molding the fitting portion.

A cylindrical cavity 6 that opens on one side is formed inside the fitting and locking portion 1 . The legs 2 are all parallel to each other and protrude on the side opposite to the locking part 1. The diameter of this male button body A is 11 mm.

The female button body A shown in FIGS. 1, 2, and 4 has a female fitting portion 1 in the center, and the same legs 2 and reinforcing ribs 3 as described above are provided at five equally spaced locations in the circumferential direction. The entire body is integrally molded from synthetic resin. The fitting and locking part 1 is made up of a combination of six protrusions 7, with cut grooves 8 formed between the protrusions 7, and grooves 9 also formed on the outside of each protrusion 7. The diameter of this female button body A is also 11 mm.
In addition, the dimensional relationship between the male and female button bodies A and A is as follows:
a = 3.9 mm, b = 3.5 mm, c = 3.6 mm, d = 4.0 mm, and the radius r to the center line of leg 2 is 4.4 mm for both male and female types.

Stop seat B shown in Figures 1, 2 and 5
, which is compatible with the male and female button bodies A and A described above, is made by pressing a flat annular sheet metal material. It has retaining pieces 11 and 12, two inner and outer cylindrical parts 13 and 14 that respectively follow the retaining pieces 11 and 12, and a tapered annular plate part 15 that constitutes a bottom plate. Leg 2 entered through opening 10 by driving
collides with the bottom plate 15 and is forcibly bent inward along the taper while being plastically deformed. The inner retaining piece 11, which is displaced inward during driving, bites into the reinforcing rib 3 due to its restoring force, and becomes a strong retainer. This situation is shown in FIG. Also, the first
In the figures and FIG. 2, 16 is a base fabric.

The object to be fitted and locked to the male button body A in the figure may be other than the female button body A in the figure, and conversely, the object to be fitted and locked to the female button body A in the figure is It may be something other than the male button body A. or,
Both the male and female button bodies A and A may have a stop seat other than that shown in the drawings. In short, it is sufficient that the legs 2 are integrally and continuously connected to the button body A and that the reinforcing ribs 3 are provided. The number of legs 2 in one button body A is arbitrary, such as 4, 6, or 3. The shape, size, color, etc. of the button body A are also arbitrary.

Another aspect of the reinforcing ribs 3 is shown in Fig. 6, in which reinforcing ribs 3, 3 are provided on both the inside and outside of the leg 2, and in Fig. 7, reinforcing ribs 3, 3 are provided around the entire circumference. In this case, the opening 10 of the retaining seat B is along the radial direction or is a single round hole. Furthermore, in relation to the fitting and locking portion 1, the circumferential groove 5 may be omitted as shown in FIG.

[Brief explanation of the drawing]

The drawings show an embodiment of the snap button according to the present invention, and FIG. 1 is a sectional view before driving, FIG. 2 is a sectional view after driving and in use, and FIGS. 3, 4, and 5.
The figures are - lines, - lines, and - lines in Fig. 1, respectively.
The view taken along the - line, FIGS. 6, 7, and 8 are a perspective view and a cross-sectional view showing other embodiments. A...Button body, B...Stop seat, 2...Legs, 10
...An opening for the leg to pass through, 11, 12...A retaining piece.

Claims (1)

[Claims for Utility Model Registration] 1. Plastically deforming a male or female synthetic resin button body A having a plurality of plastically deformable legs 2 protruding from the back surface onto the opening edge of the leg insertion opening 10. A snap button consisting of a retaining seat B made of sheet metal and having retaining pieces 11 and 12 that bite into the legs 2. 2. The snap button according to claim 1, wherein the leg insertion opening 10 of the retaining seat B is formed in an annular shape.