JPH09140412A - Female body for snap button and caulking die for attachment therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform attachment to cloth or the like without generating the dispersion of the spring at the time of detachment and the attachment from/to the male body of a snap button of an annular spring member. SOLUTION: In this female body 10, the inner diameter B of the annular spring member 28 is larger than the inner diameter A of the second cylindrical shape part 24 of a burrel member 18. In the case of attaching the female body 1 to the cloth along with an attachment member, the upper edge part of the center projection part of the lower die of the caulking die is abutted not to the annular spring member as before but to a shoulder part 30 at the time of a caulking operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snap button female body and a caulking die for mounting the female body.

[0002]

2. Description of the Related Art Conventionally, a snap button female body 1 of the type shown in FIG. 3 has been used. This female body 1 is composed of a surface shell member 3, a barrel member 5, and an annular spring member 7, and the annular spring member 7 has a diameter-expanded portion 9 below the barrel member 5.
And an annular space 1 created between the surface shell member 3 and
1, the inner diameter B of the annular spring member 7 extends downward from the enlarged diameter portion 9 of the barrel member 5, and the reduced diameter portion 1 extends upward.
3 is smaller than the inner diameter A. The dimensional relationship of A> B is such that a conventional female body is a male body (not shown), which is equal to or slightly larger than the inner diameter B, but is repulsive to a constricted portion having a diameter smaller than the inner diameter A of the reduced diameter portion 13. It is an indispensable condition for taking a configuration to be engaged. When the female body 1 having this structure is attached to the cloth 17 etc. by caulking with the caulking die using the attaching member 15 as shown in FIG. 4, first, the caulking die upper die 19 is lowered. The upper portion of the reduced diameter portion 13 of the barrel member 5 is to be caulked to the attachment member 15 and the cloth 17, but the pressing force exerted by the upper die at this time is due to the reduced diameter portion 13 of the barrel member 5 and the annular spring member. 7 and the step portion 23 formed along the upper edge of the central protruding portion 21 of the lower die 190 or the upper edge of the lower die 190, as shown in FIG.
Is deformed by receiving all the pressing force, and as a result, the elasticity of the snap button for attachment and detachment with respect to the male body varies.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a snap button female body which can be attached to a cloth or the like without causing a variation in the elastic force of the annular spring member when the snap button is detached from the male body. Providing a lower die in a crimping mold for use in mounting the snap button female body.

[0004]

According to the present invention, a surface shell member 14 having an opening 12 for inserting a male body of a snap button and a lower end flange portion 16 are provided along the lower end flange portion. A cylindrical member 20 integrated with the surface shell member to accommodate an annular spring member 28 in an annular space 26 created between the barrel member 18 and the surface shell member; A second cylindrical portion 24 extending upwardly from the first cylindrical portion and having a reduced diameter than the first cylindrical portion 20, whereby the first cylindrical portion A female body 10 of a snap button comprising a barrel member 18 having a shoulder portion 30 formed at a transition portion 22 between the second cylindrical portion 20 and the second cylindrical portion 24. 24
A female body of the snap button is provided, wherein the inner diameter of the snap button female is smaller than the inner diameter of the annular spring member 28. A caulking type including a lower die 36, wherein the lower die 36 penetrates the support surface 38 for receiving the surface shell member 14 and the opening 12 of the surface shell member and projects into the barrel member 18. And 40, the projection comprising a step 42 adapted to receive the shoulder 30 on the barrel member.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION A female body of the present invention will be described in detail with reference to FIGS. 1 and 2. FIG. 1 shows a female body 10 of a snap button having a structure according to the present invention (hereinafter, simply referred to as female body 10). The cross section of the female shell 10 is the same as the conventional product as shown in FIG. 3, and the female shell 10 has a surface shell member having an opening 12 at its center for inserting a caulking type lower die described later. A barrel member 18 having a lower end flange portion 16 is integrated with the surface shell member 14 along the lower end flange portion 16. The barrel member 18 includes a first cylindrical portion 20 extending upward from the lower end flange portion 16 and a transition portion 2.
2 and a second cylindrical portion 24 continuous with the first cylindrical portion 20 and having a diameter smaller than that of the first cylindrical portion 20 and transitioning to the first cylindrical portion 20. Part 2
The annular space 26 defined by 2 and 2 has an annular shape for exercising the elastic action when elastically engaging the male body (not shown) of the snap button and for firmly holding the engaged male body. The spring member 28 is interposed. As mentioned above, the second
A shoulder portion 30 is formed in the transition portion 22 because the cylindrical portion 24 of the first cylindrical portion 20 has a diameter smaller than that of the first cylindrical portion 20.

In the female body 10 of the present invention, the inner diameter B of the annular spring member 7 of the conventional female body 1 is changed to the inner diameter A of the reduced diameter portion 13.
Contrary to the smaller size, the inner diameter B of the annular spring member 28 is set to the second cylindrical portion 2 of the barrel member 18.
It is set larger than the inner diameter A of 4. By doing this, when the female body 1 of the present invention is attached to the cloth together with the attachment member, the upper edge of the central protrusion of the lower die of the caulking die is
During the caulking work, the shoulder portion 30 can be brought into contact with the annular spring member 28 instead of the conventional one.

Also shown in FIG. 2 is a lower die 36 in a crimping die according to the invention for crimping the female body 10 to a fabric 32 or the like with a mounting member 34 or the like. The lower die 36 includes a support surface 38 that receives the surface shell member 14 of the female body 10, and a protrusion 40 that protrudes upward from the center of the support surface 38 and is inserted into the female body 10 through the opening 12 of the female body 10. have. A step portion 42 similar to the step portion 23 shown in the conventional example of FIG. 4 is formed on the upper edge portion of the projecting portion 40. However, this step 42
As described above, in the female body 10, the inner diameter B of the annular spring member 28 is set to be larger than the inner diameter A of the second cylindrical portion 24 of the barrel member 18. Instead of receiving the spring member as 23, the annular spring member 28 can be bypassed and the shoulder 30 can be received directly. Therefore, the step portion 42 of the protrusion 40 is formed.
Is formed in a range smaller than the inner diameter B of the annular spring member 28 and larger than the inner diameter A of the second cylindrical portion 24 of the barrel member 18.

FIG. 5 illustrates a typical male body 50 that can be used with the female body 10 of the present invention in a state in which it is attached to the female body 10. As is apparent from the above-described configuration of the female body 10, the male body 50 includes the head 52 having a diameter smaller than the inner diameter A of the second cylindrical portion 24 of the female body 10 and the second cylindrical portion. And a flange portion 54 having a diameter larger than the inner diameter A of 24 and slightly larger than the inner diameter B of the annular spring member 28.
After the insertion into 0, in the male body 50, the lower portion of the flange portion 54 that elastically surpasses the annular spring member 28 is the annular spring member 28.
And the upper portion of the flange portion 54 is supported by the shoulder portion 30 of the transition portion 22, so that the upper portion of the flange portion 54 is held in a fitted state with the female body 10. Although the invention has been described with reference to specific embodiments, it will be understood that many modifications may be made within the invention.

[0009]

The present invention provides a snap button female body that can be attached to a cloth or the like without causing variations in the elasticity of the annular spring member with respect to the snap button male body attachment / detachment, and the snap button female body. A lower die in a crimp mold is provided for use in mounting the.

[Brief description of the drawings]

FIG. 1 is a sectional view of a female body of a snap button according to the present invention.

FIG. 2 is a cross-sectional view illustrating a state in which the female body of the snap button shown in FIG. 1 is attached to the cloth by caulking using an attachment member.

FIG. 3 is a sectional view of a female body of a conventional snap button.

FIG. 4 is a cross-sectional view illustrating a state in which the female body of the snap button shown in FIG. 3 is attached to the cloth by caulking using an attachment member.

FIG. 5 is a partial cross-sectional side view illustrating a state in which a male body that can be used with the female body of the snap button of the present invention is attached to the female body.

[Explanation of symbols]

 10 Female Body of Snap Button 12 Opening 14 Surface Shell Member 16 Lower End Flange Part 18 Barrel Member 20 First Cylindrical Part 22 Transition Part 24 Second Cylindrical Part 26 Annular Space 28 Annular Spring Member 30 Shoulder 32 Fabric 34 Mounting member 36 Lower die 38 Support surface 40 Projection 42 Step 50 Male body 52 Head 54 Flange

Claims (2)

[Claims] 1. A surface shell member (14) having an opening (12) for inserting a male body of a snap button, and a lower end flange portion (16), and the surface shell along the lower end flange portion. A barrel-shaped member (18) integrated with a member, and a first cylindrical portion (wherein an annular spring member (28) is housed in an annular space (26) created between the barrel member (18) and the surface shell member ( 20) and a second cylindrical portion (2) extending upward from the first cylindrical portion and having a diameter smaller than that of the first cylindrical portion (20).
4) and thereby the first cylindrical portion (2
0) and the second cylindrical portion (24) transition (22)
A barrel member (18) having a shoulder portion (30) formed on the barrel member (18)
A female body (10) of a snap button comprising: a snap button, wherein the inner diameter of the second cylindrical portion (24) is smaller than the inner diameter of the annular spring member (28). Female body of buttons. 2. A crimping mold including a lower die (36) for attaching the female body (10) of the snap button according to claim 1 to a fabric (32), said lower die (36) comprising: A support surface (38) for receiving the surface shell member (14), and a protrusion (40) penetrating into the barrel member (18) through the opening (12) of the surface shell member, A crimping die wherein the protrusion comprises a step (42) adapted to receive a shoulder (30) in the barrel member.