JPS6037227A - Caulking method - Google Patents

Abstract

PURPOSE:To prevent an implanting member from turning by driving away a caulking allowance to the corners of a square hole, by boring concentrically a round hole and a square hole to form a caulking hole in a sheet material and caulking the clearance between the caulking hole and a circular caulking allowance, which is formed at a part of the implanting member and is inserted into the bored round hole. CONSTITUTION:A sheet material 7 is punched by a general-purpose punching die by overlapping a round hole 8 and a square hole 9 to form a caulking hole of specific shape in it. Further, a caulking allowance 12 with a diam. of the degree capable of being fitted to the round hole 8 of sheet material 7, is formed at one end of an implanting member 11, and a screwed hole 13 is also provided to the other end. Then the caulking allowance 12 of member 11 in the hole 6, is deformed and bulged to the outer periphery and is driven away to each corner to tightly stick to the sheet material 7, thereby preventing the member 11 from turning with respect to the material 7 as well as preventing it from slipping off.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a tightening method for planting a planting member such as a stud into a plate material.

[Prior art]

The conventional tightening method will be explained based on FIGS. 1 to 5. When the planting member 1 such as a stud is planted in the board 2 by tightening so as not to rotate, first the method shown in FIGS. As shown, O is cut out parallel to both sides of the circle using a special hole punching die in the plate material 2.
A shark hole 3 having a special shape is drilled.

On the other hand, as shown in FIGS. 3 and 4, a specially shaped gap 4 is formed at one end of the planting member 1 to fit into and protrude into the restricting hole 3 of the plate material 2, and the other end is threaded. Hole 5 is drilled.

Next, when the threading margin 4 of the planting member 1 is inserted into the tightening hole 3 of the plate material 2 and tightening is performed, the threading margin 4 of the planting member 1 deforms and swells outward from the periphery of the planting material 2. This prevents the planting part control from coming off the plate material 2.

However, such conventional tightening methods have the disadvantage that a special hole punching die is required when drilling a specially-shaped choke hole in the plate material, and the cutting margin of the planting member is reduced by cutting the specially-shaped choke hole in the plate material. The disadvantage is that machining of the drawing allowance is complicated in order to match the size.

[Purpose of the invention]

The present invention has been made in order to solve the above-mentioned drawbacks, and its purpose is to use a general-purpose punching die to drill specially shaped holes in the temporary phase to prevent movement, and to implant The purpose is to simply make the cross-sectional shape of the strangling allowance of the installation member circular.

[Structure of the invention]

In order to achieve the above-mentioned object, the present invention forms a specially shaped key metal round hole and a square hole concentrically in a plate material, and also provides a cross-sectional shape that fits into the round hole in the implanted member. A drawing allowance having a circular shape is formed, this drawing allowance is inserted into the drawing hole of the plate material, and the drawing is completely tightened, and the drawing allowance is deformed and bulged outward to escape into each corner of the square hole. It is characterized in that the planting member is closely attached to the plate material so that it does not rotate.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on FIGS. 6 to 9. In the figure, reference numeral 6 denotes a specially shaped restricting hole drilled in the plate material 7, which is formed by combining a round hole 8 and a square hole 9. 1
0 is a corner of the square hole 9. In addition, the round hole 8 and the square hole 9
The center of the reed is in the same position as the reed, and the diameter of the round hole 8 is the same as that of the square hole 9.
It is longer than one side and shorter than the diagonal of the square hole 9.

Reference numeral 11 designates an implant member such as a stud, which has a threaded gap 12 with a circular cross-sectional shape that fits into the round hole 8 of the plate 7 at one end, and a threaded hole 13 at the other end.

Next, to explain the operation of the above structure, first, as shown in FIG. 6 and FIG. form 6. In addition, as shown in FIGS. 8 and 9, the planting member 11
A gap 12 having a diameter large enough to fit into the round hole 8 of the plate material 7 is formed at one end, and a screw hole 13 is bored at the other end.

Then, the hole 12 of the planting member 11 is inserted into the hole 6 of the board T.
When the insertion member 11 is inserted and tightened, the locking margin 12 of the planting member 11 deforms and bulges outward, escapes into each corner 10 of the square hole 9, and comes into close contact with the plate 7, and the gap against the plate 7 is This prevents the planting member 110 from rotating and from coming off.

Incidentally, the round hole 8 and the square hole 9 may be bored in the plate material 7 at the same time, or one of them may be bored first.

〔Effect of the invention〕

As described above, according to the tightening method of the present invention, a specially shaped choke hole is formed in a plate material by concentrically drilling a round hole and a square hole, and the hole is fitted into the round hole in the implanted member. By forming a drawing allowance with a circular cross-sectional shape and inserting this drawing allowance into the drawing hole of the plate material and tightening, the drawing allowance escapes to each corner of the rectangular hole that deforms and bulges outward. Since it is tightly attached to the plate material, it has the effect of preventing rotation of the implanted member relative to the temporary phase and also preventing it from coming off.

'I: By drilling a round hole and a square hole concentrically, a specially shaped restricting hole can be created, which has the significant effect of allowing the restricting hole to be formed using a general-purpose punching die. At the same time, since the cross-sectional shape of the strangling margin of the planting member can be made circular, the strangling margin can be easily processed and manufacturing costs can be reduced.

[Brief explanation of the drawing]

Figure 1 is a plan view of a conventional plate, Figure 2 is a sectional view of the same, and Figure 3 is a plan view of a conventional board.
The figure is a front view of a conventional implantation member, FIG. 4 is a side view of the same side, FIG. 5 is a diagram showing a conventional tightened state, and FIG. 6 is a plan view of a plate showing an embodiment of the present invention. FIG. 7 is a sectional view of the same, FIG. 8 is a front view of the implantation member showing one embodiment of the present invention, and FIG. 9 is a side view of the same. 6...Shark hole 7...Plate material 8...Round hole 9...
・Square hole 11... Planting member 12... Squeezing allowance patent applicant Oki Electric Industry Co., Ltd. agent patent attorney Takashi Kanakura Futaba 1- Corner 3- Plow 2- @4- Scene 9-

Claims (1)

[Claims] 1. It is formed by concentrically drilling a specially shaped round key metal hole and a square hole in the plate material, and a strangling allowance with a circular cross-sectional shape that fits into the round hole is formed in the planting part. By inserting this choking allowance into the choking hole of the plate material and choking, the choking allowance is deformed and bulged outward to escape into each corner of the square hole, so that the planting member is attached to the plate material. A method of strangling that is characterized by tightly fitting it so that it does not rotate.