JPH05337572A - Joining part of metal member - Google Patents

Abstract

PURPOSE:To obtain a good positioning precision and to avoid a bulging due to calking by composing of metal member protruded an emboss and a metal member provided with a tapered part at the side of hole, and fitting the emboss to a hole and squeezing the emboss along a taper. CONSTITUTION:The emboss 3 is protruded on the flat plate metal member 1 by stamping, forming the recess 4 on opposite side. Also, the hole 5, which fits with the emboss 3, is arranged on the flat plate metal member 2, and the tapered part 6 on side of the hole 5. When the emboss 3 is fitted in the hole 5, the relative position relationship of the metal members 1, 2 is precisely set. The piled two metal members 1, 2 are arranged on the jig 10 and the emboss 3 of metal member 1 is squeezed by the punch 12 with taper face. At this time, the pastically deformed part 7 is formed. Thus, because of good positioning precision and no bulging due to calking, the joined part is free from any obstruction for product functioning.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal member joined part, and more particularly to a metal member joined part joined by caulking an emboss.

[0002]

2. Description of the Related Art In the prior art, for example, as disclosed in Japanese Utility Model Laid-Open No. 62-73964, holes are formed in both metal plates to be joined, and caulking pins are inserted into the holes. Some caulking pins are joined by caulking one head of the caulking pin.

In the case where the caulking pin is not used, one metal plate to be joined is provided with an emboss as disclosed in Japanese Utility Model Laid-Open No. 1-127625, and the other emboss is joined with the emboss. There is one that is joined by inserting it into a hole of a metal plate and performing swaging crimping on the head of the emboss.

[0004]

However, in the prior art as disclosed in Japanese Utility Model Laid-Open No. 62-73964, since the caulking pins are used, the relative positioning accuracy of both metal plates to be joined is high. There is a problem that is bad.

Further, in the prior art as disclosed in Japanese Utility Model Laid-Open No. 62-73964 or Japanese Utility Model Laid-Open No. 1-127625, the plastically deformed portion of the caulking pin or the embossed head covers the hole for joining. In addition, there is a problem in that the protruding plastically deformed portion comes into contact with other parts, which hinders the function of the product, because the protruding portion is exposed to the periphery.

The present invention has been made in order to solve the above-mentioned problems, and the relative positioning accuracy of both metal members to be joined is good, and the metal members do not protrude from the periphery due to caulking. It is intended to provide a joined part.

[0007]

In order to achieve this object, a metal member joining component of the present invention comprises a metal member having an embossed projection and a metal member having an inclined portion on the side surface of a hole. An emboss is fitted in the hole and crushed along the slope.

[0008]

The embossing projectingly provided on one metal member of the present invention having the above construction is fitted into the hole of the other metal member. The embossing of one metal member is crushed along the inclined portion of the hole of the other metal member.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1A to 1D are views showing the joining process of the present invention.

FIG. 1A is a sectional view of the metal members 1 and 2 before joining.

An embossing 3 is projected on one surface of the flat metal member 1 by stamping, and a recess 4 is formed on the opposite surface.

The flat metal member 2 is provided with a hole 5 into which the emboss 3 provided in the metal member 1 is fitted, and the side surface of the hole 5 is provided with an inclined portion 6. .. The inclined portion 6 is generally provided by chamfering with a drill, but may be provided by another method.

FIG. 1B is a sectional view showing a state in which the metal members 1 and 2 are superposed.

The embossing 3 protruding from the metal member 1 is fitted into the hole 5 formed in the metal member 2. At this time, since the embossing 3 protruding from the metal member 1 functions as a positioning pin, the relative positional relationship between the metal member 1 and the metal member 2 is accurately positioned.

FIG. 1C is a sectional view showing a state in which the emboss 3 of the metal member 1 is crushed.

First, the two superposed metal members 1 and 2 are attached to the jig 10.

The jig 10 is provided with a convex portion 11, and the concave portion 4 of the metal member 1 is fixed by being fitted into the convex portion 11 of the jig 10.

An embossing crushing device (not shown)
The punch 12 having the inclined surface of the
Crush. The inclination angle of the inclined surface 13 of the punch 12 is preferably close to the inclination angle of the inclined portion 6 provided on the side surface of the hole 5 of the metal member 2, but is not limited to this.

At this time, the emboss 3 of the metal member 1 is plastically deformed along the inclined portion 6 provided on the side surface of the hole 5 of the metal member 2 to form the plastically deformed portion 7.

FIG. 1D is a sectional view showing a state where the metal members 1 and 2 are joined.

The metal member 1 and the metal member 2 are accurately positioned by the emboss 3 of the metal member 1 and are joined by the plastically deforming portion 7 along the inclined portion 6 of the metal member 2.
Moreover, the plastically deformable portion 7 is housed in the hole 5 having the inclined portion 6 and does not protrude from the surface of the metal member 2. Figure 2
FIG. 3 is a perspective view of a metal member-joined component joined in this way.

The inclined portion 6 shown in FIGS. 1A to 1D is an example in which the metal member 2 is uniformly inclined from one surface to the other surface, but the invention is not limited thereto. Not a thing. It suffices to provide the inclined portion so that the plastically deformed portion of the emboss is accommodated. For example, as shown in FIG. 3, the hole may be provided with an inclined portion. In this case, since it is easy to accurately form the hole diameter of the vertical hole portion other than the inclined portion 6, the relative positional accuracy of the both metal members 1 and 2 can be further improved.

[0024]

As is apparent from the above description, the metal member joining component of the present invention has good relative positioning accuracy of both metal members to be joined, and there is no protrusion due to caulking in the periphery. Therefore, there is an effect that it does not interfere with the function of the product, such as contact with other parts.

[0025]

[Brief description of drawings]

FIG. 1A is a cross-sectional view of a metal member before joining.
(B) is sectional drawing of the state which the metal member was superposed.
(C) is sectional drawing in the state where the emboss of the metal member is crushed. (D) is sectional drawing in the state where the metal member was joined.

FIG. 2 is a perspective view of a metal member joint component of the present invention.

FIG. 3 is a diagram showing another example of the metal member.

[Explanation of symbols]

 1 Metal Member 2 Metal Member 3 Embossing 5 Hole 6 Slope

Claims (1)

[Claims] 1. A metal member having an embossed projection and a metal member having an inclined portion on a side surface of the hole, wherein the emboss is fitted into the hole and crushed along the inclined portion. Metal member joining parts characterized by.