JPS6227138Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention consists of connecting legs to the retaining seat at multiple locations in the circumferential direction of the button body, which has a female or male engaging part formed in the center. Regarding a certain snap button. A snap button with this configuration was recently proposed by the applicant, and is closely and inseparably related to the recently proposed retaining seat structure. In other words, in the past, a leg was attached to the stopper seat, but since the stopper seat was thin and had to be exposed, an automatic hammering machine was used to drive the stopper seat into the button body by sandwiching the base fabric. There was a high risk that the legs would break at the base due to the instantaneous impact force. Therefore, in the above-mentioned snap button, in which the legs are integrally connected to the button body on the side that is not exposed, the shape of the button body is adjusted to a certain extent, such as the wall thickness, and the legs are connected to each other at a strength that prevents breakage. It can be done. On the other hand, as a retaining seat, a flat annular sheet metal is pressed to reveal an annular opening for the leg insertion, a pair of inner and outer inverted V-shaped retaining pieces, and a tapered bottom plate for plastic deformation of the leg tip. However, when driving the leg of the above button body into such a stop seat, the tip of the leg must be driven in with considerable force. cause plastic deformation,
It is also hoped that the retaining piece will be bitten into the circumferential surface of the leg base to ensure and strengthen the connection between the retaining seat and the button body.

Regarding this biting, if the biting depth is large, the pulling out prevention effect is strong, but on the other hand, there is a risk of cracks in the groin area, and the biting force is increased by increasing the biting depth. When the leg is driven in, it is necessary to temporarily displace the retaining piece from its free state to increase its restoring force, but if such a displacement is to occur, the strength and shape of the leg must be specially adjusted. However, since it was not devised in that way, it caused unexpected slippage due to insufficient penetration, and it is regrettable that the above-mentioned connection could not be ensured and strengthened. Ta.

The snap button according to the present invention is the result of taking these points into consideration, and in addition to the above structure,
A reinforcing rib extending between the leg and the button body is integrally provided at the base of the leg.

That is, since the driving impact force that the leg receives is shared by the reinforcing rib and further dispersed from there to the button body, it is possible to reliably prevent cracks from occurring at the base of the leg. In addition, this reinforcing rib also serves as a wedge-like body that displaces the retaining piece of the retaining seat during driving, and after the retaining piece is largely displaced, sufficient biting action is achieved based on the large restoring force. With the simple addition of reinforcing ribs, we were able to achieve the synergistic effect of not causing any cracks in the legs due to this biting.

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 pin-shaped coupling parts with sharp tips at five locations equally spaced in the circumferential direction. A reinforcing rib 3 is provided at the base of the leg 2 and is integrally connected to the leg 2 and the button body A.
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 above-mentioned male and female button bodies A and A, 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 follow the retaining pieces 11 and 12, respectively, 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.

To show another aspect of the reinforcing ribs 3, the one in Fig. 7 has reinforcing ribs 3, 3 on both the inside and outside of the leg 2, and the one in Fig. 8 has reinforcing ribs 3, 3 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 illustrate embodiments of the snap button according to the present invention; FIG. 1 is a sectional view before driving, FIG. 2 is a sectional view after driving and in use, FIGS. 3, 4,
Figure 5 shows - lines and - lines in Figure 1, respectively.
Line, - line arrow view, Fig. 6, Fig. 7, Fig. 8
The figures are a perspective view and a sectional view showing another embodiment. A... Button body, 1... Fitting and locking part, 2... Leg, 3
...Reinforced ribs.

Claims (1)

[Claims for Utility Model Registration] Legs 2 for connecting to the stopper seats are integrally provided at multiple locations in the circumferential direction of the button body A, which has a fitting portion 1 formed in the center thereof, and the bases of the legs 2. A snap button characterized in that a reinforcing rib 3 extending between the leg 2 and the button body A is integrally provided at the bottom of the button. The snap button according to claim 1, wherein the reinforcing rib 3 is provided at a portion extending from the leg 2 toward the center of the button body A. The snap button according to claim 1, wherein the reinforcing rib 3 is tapered toward the main body A as it approaches the center of the button main body A. The snap button according to any one of claims 1 to 3, wherein the fitting and locking portion 1 is formed into a female shape. The snap button according to any one of claims 1 to 3, wherein the fitting and locking portion 1 is formed in a male shape. The snap button according to any one of claims 1 to 3, which is entirely integrally molded from a synthetic resin material.