JP2564247Y2 - Connection structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a joint between two members utilizing plastic deformation of metal.

[0002]

2. Description of the Related Art Conventionally, as a structure of a joining portion of two members utilizing plastic deformation of metal, as shown in FIG. 4, a metal locking piece 12 'is provided on an upper edge 11' of a side wall of one member 1 '. The other member 2 ′ is provided with a locking hole 21 ′ that is slightly larger than the cross-sectional outer shape of the locking piece 12 ′.
As shown in FIG. 5, the locking piece 12 'inserted into 1' is twisted, or the upper end of the locking piece 12 'is crimped by a press or the like, so that the locking piece 12' is engaged. Stop hole 21 '
Was pressed against the inner wall of the building.

[0003]

However, in the conventional structure of the connecting portion as described above, in the former case, the locking piece inserted into the locking hole is twisted, and the screw surface of the locking piece is engaged. Although it is pressed against the inner wall of the stop hole, but the width direction of the locking piece is not pressed against the locking hole, play occurs between both ends of the locking piece and the locking hole, and both members are separated. It was not tightly bound. Further, if the locking piece is further twisted in an attempt to firmly couple the two members, the root of the locking piece may be broken.

Further, in the latter example, the upper end of the locking piece inserted into the locking hole is caulked by a press or the like. Therefore, when caulking the upper end of the locking piece, if the press pressure is too high. One of the members on which the locking pieces are protruded may be deformed or damaged, making it difficult to set the pressure of the press.

Accordingly, the present invention is to solve the above-mentioned conventional problems and to provide a structure of a connecting portion of a member which does not require any skill in the connecting operation and has a strong connecting force. .

[0006]

In order to achieve the above object, the present invention has the following configuration. That is, the structure of the connecting portion according to the present invention is a structure of a connecting portion of two members, and a metal plate-like locking piece is protrudingly provided on one of the members and protrudes substantially at the center of the locking piece. A slit parallel to the direction is provided and divided into two small pieces, and the other member is provided with a locking hole through which the two small pieces are inserted, and a gap between the two small pieces inserted through the locking hole is formed. And the two small pieces are twisted in the direction of inversion around the slits, and the outer wall of the root of the two small pieces is pressed against the inner wall of the locking hole.

The structure of the joint according to the present invention is made of metal,
The present invention can be widely applied not only to the same kind of material such as synthetic resin and wood but also to the joining of members made of different kinds of materials. Further, the metal plate-shaped locking piece protruding from one member is not particularly limited as long as it is a metal that is plastically deformed, such as a metal plate of steel, aluminum, copper, or an alloy plate thereof. Instead, it may be appropriately selected according to the application.

As a method of projecting the locking piece on one member, when the locking piece and the member are made of different materials, a metal plate-shaped locking piece prepared in advance as a separate body is welded. The member may be attached to the member by an appropriate method such as caulking or bonding, and when the member is made of the metal that is plastically deformed, the member and the locking piece are integrally formed by a press or the like. Is preferred.

[0009]

The structure of the connecting portion of the present invention is such that a metal plate-like locking piece protruding from one member is inserted into a locking hole of the other member, and the locking piece protrudes from the locking hole. Is divided into two small pieces by a slit, and the slit between the two small pieces is expanded and the two small pieces are twisted in a direction to be inverted around the slit, so that the outer wall at the base of the small piece is Are pressed against the inner wall of the locking hole, and each small piece does not play with the inner wall of the locking hole not only in the torsion direction but also in the width direction, and both members are firmly connected. Be combined.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. In FIG. 1A, an edge 11 of one member 1 is shown.
A metal plate-shaped locking piece 12 having a more appropriate width and length is protruded, and the locking piece 12 is provided with a slit 13 parallel to the protruding direction from the front end to the vicinity of the base. Slit 1
Normally, 3 is provided substantially at the center of the locking piece 12, but it may be provided on one side. The slit 1
3 divides the locking piece 12 into two small pieces 14. In addition, it is preferable to form a cut 15 in advance at the base of the two small pieces 14 because the two small pieces 14 are easily plastically deformed by the cut 15.

A lock hole 21 is formed in the other member 2, and the two small pieces 14 are inserted into the lock hole 21. If the locking holes 21 are slightly larger than the cross-sectional outlines of the two small pieces 14 to provide some clearance between the small pieces 14, even if the positions of the locking holes 21 and the small pieces 14 are slightly shifted. The small piece 14 can be easily fixed to the locking hole 21.
It is preferable because it can be inserted into

As shown in FIG. 1B, the two members 1 and 2 formed as described above have the other member 2 vertically abutting against the edge 11 of one member 1 and the locking member. Two small pieces 14 inserted into the holes 21 are projected from the locking holes 21, the slits 13 between the projected small pieces 14 are expanded, and the small pieces 14 are turned around the slits in the direction of being inverted. It is twisted, and the outer wall of the base of the small piece 14
1 is pressed against the inner wall.

As a method of expanding the slit 13 between the two small pieces 14 and twisting the small piece 14 in a direction in which the small piece 14 is inverted around the slit, for example, a tip of a driver is inserted into the slit 13 between the two small pieces 14. After inserting and expanding the slit 13, each small piece 14 may be twisted in a direction in which the small piece 14 is turned around the slit by rotating the driver.

Although the embodiment shown in FIG. 1 shows a state in which the two members 1 and 2 are vertically joined, when the two members 1 and 2 are overlapped and joined, FIG. It is sufficient to cut out an appropriate position of one of the members 1 as described above, and to bend the cut-out portion to a side orthogonal to the member 1 to project the locking piece 12 on one surface of the member 1.

When the locking piece 12 is formed on one member 1 in this manner, the other member 2 having a locking hole 21 formed on one surface of the member 1 is overlapped and the locking hole 12 is formed. 2
By inserting the locking piece 12 through 1, expanding the slit 13 between the two small pieces 14 protruding from the locking hole 21 and twisting the locking piece 12 in a direction in which the locking piece 12 is inverted around the slit 13, The two members 1 and 2 can be overlapped and firmly joined.

FIG. 3 shows an example in which the structure of the connecting portion according to the present invention is applied to the assembly of a pinion frame of a weighing scale, and both edges of one member 1 made of a metal plate bent in a U-shape. A locking piece 12 is protruded from the portion 11, and the locking piece 12 is divided into two small pieces 14 by a slit 13 parallel to the protruding direction. The other flat member 2 made of a metal plate has the U Locking hole 21 through which two small pieces 14 of character-shaped member 1 are inserted
Are drilled.

The slit 13 between the two small pieces 14 protruding from the locking hole 21 of the flat member 2 laid across both edges 11 of the U-shaped member 1 is expanded and the small pieces 1
4 is twisted in the direction of inversion around the slit 13 so that the two members 1 and 2 are joined in a box shape to form the pinion frame 3. In addition, a pinion 4 or the like is appropriately mounted between the bottom of the U-shaped member 1 and the flat member 2.

Although FIGS. 1 to 3 show an embodiment in which two members are connected, the structure of the connecting portion according to the present invention is not limited to the above, and the structure of the connecting portion is not limited to the above. If the length of the protruding locking piece is made longer than the thickness of a plurality of members to be connected as appropriate, the other members can be stacked and connected in multiple layers.

[0019]

As described above, according to the structure of the connecting portion of the present invention, the metal plate-like locking piece protruding from the member to be connected is divided into two small pieces by slits parallel to the protruding direction. Since the slit between the two small pieces protruding from the locking hole is inserted through the locking hole of the connecting member, and the two small pieces are twisted in a direction in which the two pieces are inverted around the slit. In addition to the fact that the outer wall of the base of the small piece is pressed against the inner wall of the locking hole so that the two members are firmly connected to each other, it is not necessary to largely twist and lock the locking piece as in the related art. Easy and no skill required.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a structure of a connecting portion of the present invention.

FIG. 2 is a perspective view showing another embodiment of the structure of the connecting portion of the present invention.

FIG. 3 is a perspective view showing another embodiment of the structure of the connecting part according to the present invention;

FIG. 4 is a perspective view showing a structure of a conventional connecting portion.

FIG. 5 is a perspective view showing the structure of another conventional connecting portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 One member 11 Edge 12 Locking piece 13 Slit 14 Small piece 15 Cut 2 Other member 21 Locking hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A structure of a joining portion of two members, wherein a metal plate-like locking piece is protruded from one member, and a slit parallel to the protruding direction is formed substantially at the center of the locking piece. It is provided and divided into two small pieces, a locking hole through which the two small pieces are inserted is formed in the other member, and a slit between the two small pieces inserted through the locking hole is expanded. At the same time, the two small pieces are twisted in the direction of inversion around the slit,
The structure of the connecting portion in which the outer wall of the root of the two small pieces is pressed against the inner wall of the locking hole.