Method for Mounting Male Snap Button, Male Snap Button, Male Snap Button Structure, Method for Mounting Female Snap Button, Female Snap Button, and Female Snap Button Structure

Abstract

In a male or female snap button including a base and a mounting opening, a cylindrical protrusion is provided around the mounting opening. When the male or female snap button is being mounted to a fabric, after a post of a button fastener has passed through the fabric and then the mounting opening, the post is swaged by an upper die. At this time, the protrusion of the male or female snap is crushed between the post and the base. Thereby, a part of a load as imposed on the male or female snap button can be absorbed by the deformation of the protrusion.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to a method for mounting a male snap button, a male snap button, a male snap button structure, a method for mounting a female snap button, a female snap button, and a female snap button structure, and more specifically, to a method for mounting a male / female snap button by swaging a post of a button fastener after the post has pierced a fabric using an upper die, such male and female snap buttons, and a male / female snap button structure composed of a male / female snap button and a button fastener.[0002]A pair of a male snap button (male snap) and a female snap button (female snap) which composes a snap button have been widely used in clothes, bags, etc. at their parts to be put together. To one fabric of the put-together parts, a male snap is mounted, and to the other fabric a female snap is attached. By engaging and disengaging the male and female snaps, the put-together parts can be closed and opened. To mount a male sn...

AI Technical Summary

Benefits of technology

[0008]According to another aspect of the invention, there is provided a male snap button, which includes an almost disk-like base, a projection projecting from the base to engage with a projection-receiving space of a female snap button, a mounting opening formed in a center area of the base to pass a post of a button fastener therethrough, the male snap button being to be mounted to a fabric by swaging the post on the base after the post has passed through the fabric and then the mounting opening, wherein the male snap button includes a cylindrical protrusion protruding around the mounting opening of the base, the protrusion being to be deformed together with the post as the post is being swaged. The protrusion of the male snap button can absorb a part of a load by being crushed against the base by the post which is being deformed by the swaging at the time of mounting the male snap button to the fabric.

[0012]According to still another aspect of the invention, there is provided a female snap button, which includes an almost disk-like base, a periphery side projecting from the base and defining a projection-receiving space to receive a projection of a male snap button, a mounting opening formed in a center area of the base to pass a post of a button fastener therethrough, the female snap button being to be mounted to a fabric by swaging the post on the base after the post has passed through the fabric and then the mounting opening, wherein the female snap button includes a cylindrical protrusion protruding around the mounting opening of the base, the protrusion being to be deformed together with the post as the post is being swaged. The protrusion of the female snap button can absorb a part of a load by being crushed against the base by the post which is being deformed by the swaging at the time of mounting the female snap button to the fabric.

[0015]In the invention, at the time of swaging the post of the button fastener by an upper die when the male or female snap button is being mounted to the fabric, by deforming the protrusion of the male or female snap button together with the post, a part of a load as imposed on the male or female snap button can be absorbed by the deformation of the protrusion. Thus, it will be possible to reduce a load as imposed on the base of the male or female snap button. Thereby, it will be possible to lower the product strength of the male or female snap button, extending a choice of materials and sizes of the male or female snap button. Further, it would be possible to make an elastic member unnecessary, which is provided in an upper die to absorb an excess load imposed on the male or female snap button.

Problems solved by technology

However, when the post of the button fastener is being waged by the punch of the upper die, a high load is imposed on the male or female snap.

Therefore, it is necessary to produce male and female snaps with an enough strength to bear a high load at the time of swaging, so there is a certain limitation in a choice of materials and sizes.

Besides, the upper die is provided with a cylindrical elastic member to absorb an excess load (see e.g. JP,H11-1812,A), which increases costs accordingly.

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