JPH09224718A - Female metal part of snap fastener and manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a flaw and a problem in a conventional snap fastener. SOLUTION: In the female (recessed) side of the metal body of a snap fastener, an elastic engaging hole part 10, which expands through the elasticity of the material, is formed integrally with a flange part 11 around the hole part 10. In an opening side 12 of the hole part 10 in this metal body, an ornamental cap 13 is attached through the flange 11. In addition, on the bottom of the metal body, an engaging mouth 15 is provided to which a tack-on button 17 is attached to form the entire female side of the metal body. Then, a cylindrical cavity is formed downward in the center of the thin planar material and, in the center of a bottom 14 of that cavity, a hole is provided for the tack-on button 17; then, a notch is radially made from the outer circumferential edge of the flange 11 toward the cavity; using this notch, a part of the flange 11 is raised vertically, with the tip end of that raised piece curled inward to form a petal-shaped and freely expandable elastic engaging hole part 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snap used as a metal fitting such as clothes, bags and other seat covers, and more particularly to the structure of a female (concave) metal fitting constituting the snap and a method for manufacturing the same.

[0002]

2. Description of the Related Art As is well known, snaps are made up of a pair of metal fittings having irregularities and are widely used in various fields including clothing. Incidentally, FIG. 7 shows a structure of a metal (concave) side of a snap, which has been generally popular in the past.

For example, the metal fitting (A) on the female (concave) side of the snap shown in (1) of FIG. 7 has a fitting concave recess 50 formed in the center of a circular substrate, and the neck of the fitting concave recess 50. Two S-shaped elastic steel wires 51 and 51 are incorporated on the left and right sides of 50a. That is, against the elastic steel wires 51 incorporated on the left and right of the neck portion 50a of the fitting recessed portion 50, the male portion 5 shown by a virtual line on the right side of FIG.
By pressing and fitting 2 into the metal fittings (A) and (B) on both the female (concave) side and the male (convex) side,
In addition, it is configured so that it can be detachably coupled.

Further, FIGS. 7B and 7C show another type of snap-type metal fitting on the female (concave) side, which is commonly called a split spring type. These do not separate the elastic steel wires 51 and 51 as in the above (1),
In (D), a spring portion is provided on the outer peripheral portion of the main body, and the spring portion is raised to form a spring member 53. Further, in (F), a cut is provided in a part of the main body in the process of press molding, a hole is formed in the center part by using the cut, and the holed portion is curled inward to be used as the spring member 54. It was devised to do so.

[0005]

However, the above-mentioned FIG.
The following problems have been raised in the female (concave) side metal fitting in the conventional snap shown in FIG. , (1), the metal wire must be plastically deformed to finish the elastic steel wire 51 into a desired shape and size, and the elastic steel wire 51 must be attached to the neck 50a of the fitting recess 50. Since it is press-fitted into predetermined positions on both the left and right sides, the manufacturing process as a whole becomes extremely complicated and difficult. Therefore, the cost was inevitably high. , (1), when the male portion 52 is press-fitted, the strength of the insertion is different depending on the directionality of the male portion 52, and the left and right elastic steel wires 51 and 51 are deformed and the male ( There is a case where a structural failure occurs such that smooth press fitting of the metal fitting (B) on the (convex) side is hindered. In the case of the metal fittings of (1) and (1), a wrinkle is generated on the side of the opening into which the male (convex) metal fitting (B) is press-fitted when the metal fitting is completed, so that the design as a whole is impaired and the appearance is deteriorated. , (2) and (3), the spring member 53,
Since 54 is of a type projecting to the surface, the spring members 53 and 54 may be curved outwards at the stage of assembling to clothes or the like, and the spring function may be impaired. , (2) and (3), the split spring (spring members 53, 54) formed by press molding is exposed,
It doesn't look good. , (3), it is difficult to satisfy the required shape and size (a and b) accuracy of the washer (flange) portion 55, and the processing accuracy of the washer (flange) portion 55 and the fastener 56 makes it difficult. Often affects adhesion.

Therefore, the present invention was developed for the purpose of providing a snap that solves the drawbacks and problems of the conventional snaps, and in particular, the female (concave) side metal fitting that constitutes the snap and its fitting. A manufacturing method is provided.

[0007]

In order to achieve the above object, the structure of the metal fitting on the female (concave) side of the snap is constructed as follows. First, an elastic locking hole portion that expands in diameter against the elastic force of the material and a flange portion are integrally formed around the elastic locking hole portion to form a female (concave) side metal fitting body. Then, a decorative cap was attached to the opening side of the elastic locking hole portion of the metal fitting body via the flange portion. Further, an engaging opening is provided at the bottom of the metal fitting body, and a stop button is attached to the engaging opening to make a snap female (concave).
Configured the side fittings. That is, the female (concave) side metal fitting is attached to a predetermined position of clothing or the like through the stop button.

The upper edge of the opening of the elastic locking hole is curled inward to form an elastic locking edge.

Further, the female (concave) side metal fitting consisting of the elastic locking hole portion and the flange portion whose diameter can be freely expanded is as follows.
According to the procedure of (7), it is integrally formed by press working and manufactured. (1) A cylindrical recess is formed downward in the center of the thin plate material. (2) A hole for a stop button is formed at the center of the bottom of the recess. (3) A radial cut is made from the outer peripheral edge of the flange portion toward the recess. (4) Utilizing the notches, a part of the flange is vertically raised. (5), the tip of the raised piece is curled inward to form a petal-shaped elastic locking hole (spring)
To form (6) The outer peripheral edge of the flange portion is vertically raised in the same direction as the elastic locking hole portion. (7) Using the outer peripheral edge of the vertically raised flange portion as a guide, the decorative cap is integrally attached.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention. FIG. 1 is a structural sectional view showing an embodiment of a snap according to the present invention, and FIG. 2 is a perspective view showing a female (concave) side metal fitting body of FIG. As shown in FIGS. 1 and 2, an elastic locking hole portion (spring portion) 10 made of a thin plate material such as a metal and having a freely expandable diameter and a flange portion 11 are integrally formed to form a snap female (concave) portion. It is the metal fitting body K on the side.
In addition, the opening side 12 of the elastic locking hole portion (spring portion) 10
A decorative cap (protective cap) 13 was attached to the above via a flange 11. And the bottom part 1 of the metal fitting body K
4, that is, the engaging opening 15 is provided at the center of the bottom of the concave portion,
A metal fitting L on the female (concave) side of the snap is formed by attaching a stop button 17 to the engagement opening 15 via a cloth 16.

The upper edge of the opening of the elastic locking hole portion (spring portion) 10 is formed as an elastic locking edge 18 curled inward. The hole 19 shown is a residual hole of the partial piece 20 that constitutes the elastic locking hole portion (spring portion) 10. In this embodiment, the number of the partial pieces 20 constituting the elastic locking hole portion (spring portion) 10 is six, but it goes without saying that the number is not limited to this. The decorative cap (protective cap) 13 was in the shape of a donut made of metal or the like. The hole at the center is the insertion hole 21 of the metal fitting M on the male (convex) side.

Next, FIGS. 3 and 4 are process drawings showing a method for manufacturing the metal fitting on the female (concave) side of the snap according to the present invention. A description will be given according to the numbers shown. (1), a thin plate of metal or the like for manufacturing (in this case, a disk) 2
Prepare 2 (2) A cylindrical recess 23 is formed downward in the center of the thin plate 22. (3) A hole 24 for a stop button is formed at the center of the bottom of the recess 23. (4) A predetermined notch 26 is radially formed from the outer peripheral edge of the flange portion 25 to the recess side. (5) Using the notch 26, the partial piece 27 is raised. (6), The partial piece 27 is vertically raised. (7) The tip of the raised partial piece 27 is curled inwardly to form a petal-shaped elastic locking hole portion (spring portion) 10 which can be expanded in diameter. (8) The outer peripheral edge 28 of the flange portion 25 is vertically raised in the same direction as the elastic locking hole portion (spring portion) 10. (9) A decorative cap (protective cap) 29 is integrally attached using the vertically outer peripheral edge 28 as a guide. It is manufactured by the above series of press processing and assembly processing.

A method of mounting the female (concave) metal fitting of the snap according to the present invention on a cloth such as clothes will be described with reference to FIGS. FIG. 5 is a cross-sectional view showing a state in which the metal fitting on the female (concave) side of the snap according to the present invention is attached to the fabric, and FIG. 6 is a cross-sectional view showing a state in which the attachment in FIG. 5 is completed. As described above, the metal fitting on the female (concave) side of the snap according to the present invention includes the elastic locking hole portion (spring portion) 10 made of a thin plate material such as metal, and the flange portion 11 which can be expanded in diameter.
Are integrally formed to form a metal fitting body K on the female (concave) side of the snap, and the decorative cap (protection is provided on the opening side 12 of the elastic locking hole portion (spring portion) 10 via the flange portion 11. A cap 13 is attached, and an engagement port 15 is provided at the center of the bottom portion 14 of the metal fitting body K. (See FIG. 1 and FIG. 2) Then, as shown in FIG. 5 and FIG.
When it is attached to No. 6, the engaging port 15 is used to assemble as follows. First, the hitting piece (mounting tool) 30 is inserted through the hole 21 at the center of the decorative cap (protective cap) 13, and the anti-oblique portion 32 of the head (stop button) 17 including the dish portion 31 and the anti-oblique portion 32 is removed. The fabric 16 is punched out and inserted into the engagement opening 15. Then, they press each other to crimp the insertion tip portion 33 of the anti-oblique portion 32. That is, the stop button 17 is attached to the engagement opening 15 through the fabric 16.

[0014]

Since the metal fitting on the female side of the snap according to the present invention is constructed as described above, it has the following effects. (1) Since the female (concave) side metal fitting according to the present invention can be manufactured by subjecting the metal fitting body integrally formed by pressing to a simple assembly processing, the productivity is extremely improved. That is, the quality of the product can be guaranteed while the processing is easy and the cost can be reduced. (2) The metal fitting on the female (concave) side according to the present invention is a male (convex)
Since the elastic locking hole portion (spring portion) into which the metal fitting on the side is inserted is guarded by the decorative cap (protective cap), the elastic locking hole portion (spring portion) is of course protected.
It is possible to correctly set the press-fitting direction of the hitting piece (tool for attaching the stop button) and the male (convex) side metal fitting to be inserted into the entrance hole of the decorative cap (protective cap). (3) Since the female (concave) side metal fitting according to the present invention is contained in the decorative cap (protective cap), it is difficult to deform due to external pressure, and the design (look) is very good.

[Brief description of drawings]

FIG. 1 is a structural sectional view showing an embodiment of a snap according to the present invention.

FIG. 2 is a perspective view showing a female (concave) side metal fitting body of FIG.

FIG. 3 is a process drawing showing the method for manufacturing the metal fitting on the female (concave) side of the snap according to the present invention.

FIG. 4 is a process drawing showing the method of manufacturing the metal fitting on the female (concave) side of the snap following FIG.

FIG. 5 is a cross-sectional view showing a state in which the metal fitting on the female (concave) side of the snap according to the present invention is attached to the cloth.

FIG. 6 is a cross-sectional view showing a state where mounting is completed in FIG.

FIG. 7: Snap female (concave) that has been generally popular in the past
The structure of the side metal fitting is shown, the left side is each top view, and the right side is CC, EE, and GG line vertical front view, respectively.

[Explanation of symbols]

 10 ... Elastic locking hole (spring) 11 ... Flange 12 ... Opening side 13 ... Decorative cap (protection cap) 14 ... Bottom 15 ... Engagement port 16 ...・ Cloth 17 ・ ・ ・ Stop button (head) 18 ・ ・ ・ Elastic locking edge 19 ・ ・ ・ Partial piece residual hole 20 ・ ・ ・ Partial piece 21 ・ ・ ・ Insertion hole (center hole) 22 ・-Thin plate 23 ... Dimple 24 ... Stop button hole 25 ... Flange 26 ... Notch 27 ... Partial piece 28 ... Outer peripheral edge 29 ... Decorative cap (protective cap) 30 ... Hitting piece (mounting tool) 31 ... Plate portion 32 ... Anti-oblique portion 33 ... Inserting tip portion 50 ... Fitting concave recess 50a ... Neck portion 51 ... Elastic steel Line 52 ... Male part 53 ... Spring member 54 ... Spring member 55 ... Washer (flange) part 56 ... · Fasteners (A): Female (concave) side fittings (B): Male (convex) side fittings (B ′) · · Male (convex) side fittings (B ″) · · Male ( Metal fitting on the (convex) side (D) ... Metal fitting on the female (concave) side (F) ... Metal fitting on the female (concave) side K ... Metal fitting body on the female (concave) side L ... (Concave) side metal fittings M ... Male (convex) metal fittings

Claims (3)

[Claims] 1. A snap comprising a female side metal fitting and a male side metal fitting, wherein the female side metal fitting has an elastic locking hole portion capable of expanding its diameter against the elastic force of the material, and the elastic locking hole portion. A flange portion is integrally formed around the locking hole portion to form a metal fitting body, and a decorative cap is attached to the opening side of the elastic locking hole portion of the metal fitting body via the flange portion, A fitting on the female side of the snap, characterized in that an engaging opening is provided at the bottom of the fitting body, and a stop button is attached to the engaging opening. 2. The metal fitting on the female side of the snap according to claim 1, wherein the peripheral edge of the opening of the elastic locking hole which can be expanded in diameter is formed as an elastic locking edge curled inward. 3. A metal fitting on the female side of a snap, which comprises an elastic locking hole portion and a flange portion that can be expanded in diameter, first forms a downwardly cylindrical recess in the central portion of a thin plate-shaped material, and After forming a hole for a stop button in the center of the bottom of the recess, a radial cut is made from the outer peripheral edge of the flange to the side of the recess, and a part of the flange is vertically raised using this cut, The tip of the raised piece is curled inward to form a petal-shaped elastically expandable elastic locking hole, and then the outer peripheral edge of the flange is moved in the same direction as the elastic locking hole. A method of manufacturing a metal fitting on the female side of a snap, which comprises a series of steps of vertically erecting and attaching a decorative cap integrally.