JPS6387Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a crimping fitting used for a crimping-type button such as a snap button, and particularly relates to a crimping fitting in which a cap is fitted onto the main body of the metal fitting.

Prior Art The female body and male body of a crimping-type button such as a snap button, in which a crimping metal fitting with a cap fitted to the metal body is crimped to a button body such as a female body metal fitting or a male body metal fitting, are generally A flange portion is formed on the proximal end side of a cylindrical or columnar crimping portion to form a metal fitting main body, and a cap is fitted to the flange portion of this metal fitting main body to form a crimping metal fitting, and this crimping metal fitting is It is configured to be fixed to the button main body by deforming the side opposite to the base end of the caulking portion, that is, the caulking stop portion.

However, with this type of crimping type button, when the crimping fitting is fixed to the main body of the button, an impact is applied to the crimping part of the crimping fitting from the crimping part side to the proximal end side (cap side). Since force is applied to deform the caulking part, the proximal end of the caulking part (the part on the flange side) is pressed against the cap, causing dents on the surface of the cap, which significantly reduces the product value. Ta. Such dents are caused by the impact force during tightening being transmitted to the flange.
This is thought to be due to deformation of the flange.

In order to prevent such dents, the flange is cut from the outer circumference to the center to form multiple cut pieces, and each cut piece is bent toward the cap and then folded back toward the center. It was proposed to overlap the folded pieces to form a crimping fitting in which the cap side surface of each folded piece and the cap side of the remainder of the flange were flush (1986-1993).
Publication No. 174509).

However, in this crimping fitting, the force at the time of crimping is absorbed by the bent part of the folded piece, but the crimping stop part of the crimping part has a plurality of pawls, and the crimping part is folded back at a position corresponding to each pawl. Unless a piece is formed, the force applied during caulking will be applied to the remaining portion of the flange portion, deforming the flange portion and causing dents. In addition, this crimping fitting requires a notch piece to be formed in the flange portion, and this notch piece must be bent and folded back to form a folded piece, which requires a large number of manufacturing steps for the crimping fitting, especially the crimping fitting body. The drawback is that it becomes more expensive.

Purpose of the invention The present invention was made in view of the above points, and its purpose is to provide a crimping fitting that has a simple structure, is easy to manufacture, and does not cause dents on the cap due to crimping. shall be.

According to the present invention, the above object is achieved by forming an annular rib concentrically with the crimping part on a flange part integrally formed at one end of the crimping part, and concentrically with the crimping part. This is achieved by absorbing the force applied to the flange portion by the annular rib during crimping and fixing to the flange portion, and suppressing elastic deformation of the crimping portion and the flange portion.

Embodiments Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

In Fig. 1, A is the caulking part 1 and the flange part 2.
B is a cap crimped and fixed to the flange portion 2 of the metal fitting main body A.

The metal main body A forms a flange portion 2 integrally with a base end portion 3 of a cylindrical caulking portion 1. The proximal end portion 3 of the caulking portion 1 is curved outward in the horizontal direction,
Further, the opposite side of the caulking portion 1 from the base end portion 3 is a caulking stop portion 4 which is caulked and fixed to the button main body, which will be described later.

As shown in FIGS. 2 and 3, the flange portion 2 extends horizontally from the tip of the proximal end portion 3, and has an annular rib 5 concentric with the caulking portion 1. , has a plurality of (four in the illustrated example) cut-and-raised portions 6 on the outside of the annular rib 5.

The annular rib 5 is formed by being pushed out from the cap B side to the caulking part 1 side using a press or the like, and is curved. Therefore, the annular rib 5 has a concave groove on the cap B side, and a protrusion on the opposite side. It's getting old.

The cut-out portion 6 is also pressed into the cap B.
It is formed by extruding from the side toward the caulking part 1 side, and protrudes toward the caulking part 1 side by approximately the same amount as the annular rib 5. Further, each cut-out portion 6 has a triangular shape with the annular rib 5 side being the bottom and the outer peripheral side of the flange portion 2 being the apex angle, and the bottom side, that is, the portion on the annular rib 5 side is cut off from the flange portion 2. A hole 7 is formed between the separated portion and the flange portion 2 and communicates the upper and lower portions of the flange portion 2.

As shown in FIG. 4, the cap B includes a spherical plate portion 8 and a peripheral wall portion 9 extending downward from its outer peripheral edge.
The plate portion 8 is curved with a radius of curvature larger than the diameter of the cap B. The inner diameter of the cap B is made to be approximately the same as the outer diameter of the flange portion 2 of the main body A of the metal fitting.

This cap B is the flange part 2 of the metal fitting main body A.
1 from the side opposite to the crimped part 1, and then deform the end of the peripheral wall part 9 toward the center using a press or the like as shown in FIG. It is fixed to the metal fitting main body A.

In this state, the plate part 8 of the cap B and the flange part 2 of the metal fitting main body A are separated from each other, thereby forming a space 10 between the plate part 8 and the flange part 2.

As shown in FIG. 5, an example of the crimping fitting made in this way is made by piercing the crimping part 1 of the metal fitting main body A through the fabric D and inserting it into the crimping hole 11 of the button main body C. The crimping part 4 of the crimping part 1 is deformed into an eyelet shape using a press or the like, whereby it is crimped and fixed to the button main body C.

At the time of this caulking and fixing, an impact force is applied in the axial direction of the caulking part 1, but since the main body of the metal fitting A has an annular rib 5 concentric with the caulking part 1 on the flange part 2, the impact force is applied to the caulking part 1. Even if the radius of curvature of the base end 3 of the caulking part 1 becomes small and a force is applied that causes the flange part 2 to elastically deform toward the button main body C, this force can be absorbed by the elastic deformation of the annular rib 5. The elastic deformation of the flange portion 2 is suppressed, so even if the base end portion 3 of the caulking portion 1 collides with the inner surface of the plate portion 8 of the cap B, the impact force at that time is weak and no dents are caused. In addition, although the above-mentioned embodiment is an example of a metal fitting main body A in which the caulking part 1 is cylindrical, the present invention uses a metal fitting main body in which the caulking part is a cylindrical column or a plurality of claws. It can also be applied to crimped metal fittings.

Effects of the invention As described above, according to the invention, since the annular rib concentric with the caulking part is formed on the flange part, the flange part tilts toward the caulking part due to the impact when the button body is crimped and fixed. Even if such a force is applied, this force is absorbed by the annular rib, and there are no dents caused by caulking on the cap, and the product value is significantly increased. Further, since it is sufficient to simply form an annular rib on the flange portion by pressing or the like, the structure is simple, easy to manufacture, and therefore inexpensive.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view showing one embodiment of the fastening fitting according to the present invention, Fig. 2 is a bottom view of the main body of the fitting, and Fig. 3
The drawings are a cross-sectional view taken along the line 2 in FIG. 2, FIG. 4 is a vertical cross-sectional view of the cap, and FIG. 5 is a vertical cross-sectional view of the crimping fitting in a state where it is crimped to the female metal fitting. 1... crimped part, 2... flange part, 5... annular rib, A... metal fitting main body, B... cap.

Claims (1)

[Scope of utility model registration request] In a crimping fitting in which a cap B is placed over the crimping part 1 from the opposite side and crimped and fixed to the flange part 2 of the metal fitting main body A which has a flange part 2 integrally at one end of the crimping part 1, the flange part 2. A crimping fitting for a crimping type button, characterized in that an annular rib 5 protruding toward the crimping part 1 is formed concentrically with the crimping part 1.