JPH0298302A - Method for fitting decorative ring on wrapping button - Google Patents

Abstract

PURPOSE:To enable a decorative ring to be easily fitted for preventing from coming out and without damaging the wrapping material by utilizing a partial deformation which is caused when the shape of a shell body is deformed. CONSTITUTION:A wrapping shell body 10 on which a decorative ring 4 is fitted is put on a male mold 5 so that first and second punching parts 51, 52 thereof is placed on the inside of the opening of the wrapping shell body 10. Thereafter, a female mold 6 is lowered, and the spherically projected part 14 being depressed inside is pressed by the second punching part 52 toward a second cavity part 62 side. Then, a strain absorbing part 13 in the upper part than the decorative ring 4 is expanded outward so as to cover the decorative ring 4 by utilizing the space provided between the second punching part 52 and the second cavity part 62, and is brought into contact with the inner circumferential surface of the second cavity part 62. Thereby a constricted part 15 is formed in the upper part of a ring-shaped stepped part 12, so that the decorative ring 4 is fitted in this constricted part 15 so as to be prevented from coming out, and a wrapping material 3 is prevented from the occurrence of wrinkles or slack.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method of fitting a decorative ring to a wrapper button, and more specifically, to a method of fitting a decorative ring to the constriction of a shell. .

[Prior art 1] This kind of snake's eye-shaped wrapper button has been used in the past, for example, in the 45th
There is one described in Japanese Patent No.-17777.

This conventional technique includes providing an annular step on the outer surface of a shell made of metal or synthetic resin, and protruding a circular convex portion inward from the step.
The outer surface of the shell is covered with cloth, a backing member is press-fitted thereto, and a fitting ring is fitted onto the outer surface on which the annular stepped portion is located.

[Problems to be Solved by the Invention] The above-mentioned conventional technology involves making a circular convex portion of a slightly larger diameter protrude inwardly from the annular stepped portion of the shell, and attaching a fitting ring to this annular stepped portion. When fitting, it is necessary to take advantage of the elongation and deformation of the materials of the shell and fitting ring, and to do so without damaging the cloth that is the covering material. There was a problem in that the fitting ring would come off and fall off, resulting in an unsightly appearance.

In order to eliminate each of the above-mentioned problems, this invention utilizes the partial deformation that occurs when the shell changes shape to prevent the decorative ring from falling off easily (and to fit it without damaging the wrapping material). The purpose is to provide a way to

[Means for Solving the Problems 1] The object of the present invention described above is to provide a structure that rises from the annular step portion following the opening edge into which the backing shell is fitted, and is curved inwardly or stretched outwardly so as to be depressed toward the opening edge. A strain absorbing portion is provided which connects with the circular convex portion formed to protrude and absorbs the strain that occurs when the curved direction of the circular convex portion is reversed or when it is crushed and expanded, and a covering material is provided on one side of the shell. After attaching the decorative ring to be attached to the annular stepped portion of the attached wrapping shell, the circular convex portion is expanded or crushed by bending the strain absorbing portion outward, and the decorative ring is expanded by bending the strain absorbing portion outward. This is achieved by creating a constriction in the ring formed by the bending of the annular step and the strain absorbing portion to lock the ring.

[Function] When the above-described structure is adopted, the annular step rises from the annular step following the opening edge into which the backing shell is fitted, connects with the circular convex portion formed to sink toward the opening edge, and the circular convex portion A strain absorbing part is provided to absorb the strain that occurs when the shell is inverted and protruded outward, a covering material such as cloth or leather is attached to one side of the shell, and a decorative ring is attached to the annular stepped part of the shell by hand or machine. Then, using upper and lower molds, the circular convex portion is bent to the outside of the strain absorbing portion, thereby forming the strain absorbing portion where the ring for ¥71 fs is bent with the annular step portion. The decorative ring can be easily and reliably fitted by locking into the constricted portion formed by the ring.

[Example] Examples will be described with reference to the drawings.

First method of fitting a decorative ring to a wrapping button of the present invention
As shown in FIGS. 1 to 5, this embodiment is formed of a metal plate or the like, and rises perpendicularly from an annular step 12 following the opening edge 11 into which the backing shell 2 is fitted. A shell body 1 is provided with a circular convex portion 14 that is concave in an h-rubra shape on the side and is provided with a cylindrical strain absorbing portion 13 that occurs when the circular convex portion 14 is inverted and expanded, and one side of this shell body 1 is coated. First, a wrapping shell 10 is prepared, in which a wrapping material 3 such as cloth or leather is molded and attached in advance in conjunction with the molding of the shell 1.

Further, a first punch portion 51 inscribed in the opening edge 11 of the wrapping shell 10 and the annular step portion 12;
a lower mold 5 having a second punch part 52 on top of the opening edge 11 and in sliding contact with the inside of the strain absorbing part 13 and having a spherical top surface; An upper mold 6 is used which has a cavity part 61 and a second cavity part 62 having a diameter sufficiently larger than the diameter of the strain absorbing part 13 and having a spherical ceiling.

In addition, before processing with the descending molds 5 and 6, the annular stepped portion 12 of the wrapping shell 10 has a circular or rectangular cross section with an inner diameter slightly thicker than the diameter of the strain absorbing portion 13. The decorative ring 4 is fitted along the strain absorbing part 13 up to the annular stepped part 12 by hand by an operator, or by a machine automatically by F/1.

The wrapping shell 10 fitted with the decorative ring 4 in this way is
As shown in FIG. 1, the first and second punch portions 51 of the lower mold 5.
52 is placed on the lower mold so that it enters inside the opening of the wrapping shell 10.

After that, the upper mold 6 is lowered, and the opening edge 11 and the annular step part 1 are
The two parts are clamped by the first punch part 51 and the first cavity part 61, and the second punch part 52 presses the inwardly recessed circular convex part 14 toward the second cavity part 62 by the subsequent lowering. At this time, since the decorative ring 4 fitted into the annular stepped portion 12 serves as a butt, the decorative ring 4
The strain absorbing part 13 in the upper part is connected to the second punch part 52 and the second punch part 52.
The cavity portion 62 bulges outward so as to cover the decorative ring 4 by utilizing the space provided between them, and due to this bulge, the diameter of the strain absorbing portion 13 becomes trumpet-shaped as shown in FIG. In order to expand, it comes into contact with the inner circumferential surface of the second cavity part 62. As a result, a constriction part 15 is formed above the annular step part 12, and the decorative ring 4 is blown into this constriction part 15, so that it does not come off and can be eaten away from the opening edge 11 of the wrapping material 3 during this molding process. The exposed part 31 is the upper and lower mold 65
Since the wrapping material 3 is held between the two, the wrapping material 3 will not be wrinkled or loosened during the above-mentioned processing.

After this forming process, as shown in FIG.
0, insert the end of the mounting bracket 23 bent into a loop shape into the mounting hole 22 provided in the center of the backing plate 21, bend it inward and attach it, and attach the collar 24 around the backing plate 21 on one side. Insert the backing shell 2 facing outward into the opening edge 11 of the encasing shell 10 with the brim 24, and squeeze the opening edge 11 inward as shown in FIGS. body 10,2
By integrating these, a wrapped button H with a decorative ring fitted is completed.

7 to 9 show a second embodiment of the present invention, with the circular convex portion 14a extended outward from the vertical strain absorbing portion 13, and a lower mold similar to the mold shown in FIG. 1. 5. When the circular convex portion 14a is expanded using the upper mold 6, the strain absorbing portion 13 above the decorative ring 4 is formed between the second punch portion 52 and the second cavity portion 62, as described above. The hollow space can be used to bulge outward so as to cover the decorative ring 4, and a constricted part 15 can be formed above the annular step part 12.

[Effect 1 of the Invention Since the present invention is configured as described above, it produces the effects described below.

F! Decorative ring on the wrapping button of claim 1! In the I@ method, it is easy to fit the decorative ring, and since the strain absorbing portion is bent to create a constriction after fitting, the decorative ring does not come off after being fitted, and the enveloping material does not become tense. It has the effect of preventing me from arising.

The method of fitting a decorative ring to a wrapping button according to claim 2 has the effect that the decorative ring can be easily fitted and at the same time does not cause strain during processing.

Fig. 3 is a cross-sectional view of the wrapper shell and lined shell after extrusion of the circular convex portion and before fitting, Fig. 4 is a perspective view of the completed wrapper button; Figure 5 is A- of Figure 4.
6 is an exploded perspective view of the wrapping button, FIGS. 7 to 9 show other examples of the present invention, FIG. 7 is a perspective view of the shell, and FIG. This figure and FIG. 9 are cross-sectional views of one means of compressing the circular convex portion.

1...shell body 2...Backing shell 3...Wrapping material 4... Decorative ring 10... wrapped shell body 1...Opening edge 2...Annular step part 3...Strain absorption section 4...Circular convex part 5... Constriction

Claims (1)

[Scope of Claims] 1. An annular stepped portion 12 continuing from the opening edge 11 into which the backing shell 2 is fitted when a decorative ring is fitted to a wrapper button with a covering material attached to the shell; A strain absorbing portion that rises from the annular step portion 12 and connects with the circular convex portion 14 formed by curving inward so as to recess toward the opening edge 11 side, and absorbs the strain that occurs when the direction of curvature of the circular convex portion 14 is reversed. Shell body 1 provided with 13
After fitting the decorative ring 4 that locks onto the annular stepped portion 12 of the wrapping shell 10 with the wrapping material 3 attached to one side of the shell 1, the circular convex portion 14 is attached to the strain absorbing portion 13. The decorative ring is fitted into a wrapping button which is extended by bending outward and locking the decorative ring 4 to the constricted part 15 formed by the bending of the annular step part 12 and the strain absorbing part 13. How to wear it. 2. The circular convex portion 14a of the wrapping shell 10 is curved outward, and the circular convex portion 14a bends and expands the strain absorbing portion 13, thereby causing the annular step portion 12 and the strain absorbing portion 13 to bend. 2. The method of fitting a decorative ring to a wrapper button according to claim 1, wherein the constriction part 15 is formed by a button.