JPH03308A - Bonding device for plate-like objects - Google Patents

Abstract

PURPOSE:To improve quality and strength of connection by inserting a part of one tabular object into the slit of the other tabular object, folding these two objects and pressing the protruded portion of the connection so that it is made flush with the other parts to eliminate the projection and connect them by pressure. CONSTITUTION:The tooth 2a of a steel plate 2 is inserted into a slit 1a, folded about the corners of the slit 1a in the opposite direction, and made in contact with the lower surface of the steel plate 1. A protruded portion is pressed out together with the steel plate 1 from the underside to make the lower surface of the tooth 2a flush with the surrounding lower surfaces of the steel plate 1. By this, the steel plates 1 and 2 are connected to each other with both of them in bent condition. Since the bent points of both steel plates generated by bending and pressing are positioned at the corners of the mating steel plate, the right and left movement is suppressed after they are connected. Thus, both of the steel plates can not be moved even when they are tensed or compressed and also can not be loosened at the connected portions even when an impact is given to them or in handling.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to the joining of plate-like objects such as two metal plates, and in particular to the joining of two plate-like objects by caulking. This invention relates to a joining device.

[Prior Art] Traditionally, welding,
Bolt tightening, caulking, etc. Among these devices, there is one shown in FIGS. 12 to 14, for example, as a device for joining by caulking.

Fig. 12 is a plan view showing the state of joining of conventional steel plates;
The figure is a sectional view taken along line FF in FIG. 12, and FIG. 14 is a perspective view of FIG. 12.

In the figure, (1) is a strip-shaped steel plate with a slit (1a) at the end, and (2) is an abbreviated steel plate placed between two steel plates (1), with both ends The portion overlaps with the end portion of the steel plate (1). (2a) are substantially square claws protruding from both ends of the steel plate (2), which are bent in a right angle direction before joining.

Conventional steel plates constructed as described above are joined as follows.

First, the claws (2a) of the steel plate (2) are inserted into the slits (1a) of the steel plate (1), and the ends of the steel plate (1) and the steel plate (2) are overlapped. Next, the claws (2a) are bent to firmly sandwich the steel plate (1). By doing this similarly for the claws (2a) at both ends, the steel plate (2) is attached to the steel plates (1) on both sides.
and these are integrated.

Here, the thickness of steel plate (1) is X, and the thickness of steel plate (2) is y.
Then, the total plate thickness of the joint is x+2y.

[Problem to be solved by the invention] However, in the conventional joining device for metal plates by caulking,
The claws (2a) at the joint protrude and create a step, which may impede the appearance quality.

Further, since the claw (2a) of the steel plate (2) is inserted into the slit (1a) of the steel plate (1), a gap S as shown in FIG. 13 is inevitably created in the slit (1a). For this reason, when subjected to impact or during handling, the slit (1
In some cases, the gap S in a) rattled, causing the steel plate (2) to move to the left and become loose.

Therefore, the present invention eliminates the step caused by the protrusion after joining,
It is an object of the present invention to provide a joining device for plate-like objects that improves the appearance quality and the joining strength.

[Means for Solving the Problems J] The device for joining plate-like objects according to the present invention provides a slit in one plate-like object, and inserts a part of the other plate-like object into the slit to join two plates together. The two plate-like objects are joined by stacking the two plate-like objects and pressing the protruding flat part through the plate until it is at the same height as the other flat part.

[Function] According to the present invention, the plate thickness after joining is the same over the entire surface, and there are no protrusions, so the appearance quality is improved.

In addition, since the two steel plates are pressed together to eliminate the protruding part at the joint, the two steel plates are bent toward each other, and this bent part prevents side-to-side wobbling and improves the joint strength.

[Example] Hereinafter, an apparatus for joining plate-like objects according to an embodiment of the present invention will be described.

<First Embodiment> A first embodiment of the present invention will be described based on FIGS. 1 to 7.

FIG. 1 is a plan view showing the bonded state of the first embodiment of the present invention;
2 is a sectional view taken along the line AA in FIG. 1, FIG. 3 is a sectional view taken along the line BB in FIG. FIG. 5 is a perspective view showing an example of application of the first embodiment of the present invention, FIG. 6 is a plan view showing the shapes of various joints, and FIG. 7 is a sectional view taken along the line C--C in FIG. 6. be.

In the figure, (1) is a rectangular steel plate, and a slit (1a) is bored at the end. (2) is two steel plates (1)
It is an abbreviated steel plate disposed between the two, and a substantially square claw (2a) is provided on the plane of the end. Said nail (2
Before bonding, portion a) is bent downward at right angles, as shown in FIG.

Next, joining of the steel plates of the first embodiment configured as described above will be explained.

First, attach the claw (2a) of the steel plate (2) to the sleeve of the steel plate (2).
(la) (see Figure 4).

Next, using the corner of the slit (1a) as a fulcrum, the steel plate (2
) is folded back in the opposite direction to bring it into surface contact with the lower surface of the steel plate (1). At this time, if the thickness of the steel plate (1) is X and the thickness of the steel plate (2) is y, then the joint protrudes downward by the thickness y of the claw (2a). and,
Press this protruding part together with the steel plate (1) from below,
The lower surface of the claw (2a) and the lower surface of the surrounding steel plate (1) should be at the same height. In this way, steel plate (1) and steel plate (2
) intersect at the claw part and the upper and lower positions are reversed, and the steel plate (1)
and the steel plate (2) are both joined in a bent state. At this time, the total plate thickness becomes x+y (see FIG. 2).

Note that since the bending points of both steel plates due to bending and pressing are at the corners of the mating steel plates, lateral movement is suppressed after joining. For this reason, in Figures 2 and 3, both steel plates do not move at all even if they are pulled in the direction of the arrow or compressed in the opposite direction, and the joint part does not move when subjected to impact or during handling. It never loosens. In particular, in response to the force in the direction of the arrow in Figure 3, the steel plate (1) is bent at two locations on both ends and has increased rigidity, so it does not deform.
, the bonding strength shows a larger value.

FIG. 5 shows an example in which the first embodiment is applied to joining four corner pieces of a box shape.

In this way, in the first embodiment, the steel plate (1) has a slit (1
a), and the claw (2a) of the steel plate (2) is connected to the steel plate (1).
The steel plate (1) and the steel plate (2) are inserted through the slit (1a) of
The steel plate (1) and the steel plate (2) are stacked on top of each other and pushed upward until the flat part that has been inserted and protruded is at the same height as the other flat part.
).

Therefore, the thickness of the steel plate (1) and the steel plate (2) after joining becomes the same over the entire surface, and there are no protruding parts, so that the appearance quality is improved. Also, since the steel plate (1) and the steel plate (2) are pressed so as to eliminate the protrusion at the joint part, the steel plate (1) and the steel plate (
2) are bent toward each other, and this bent portion prevents side-to-side wobbling and improves the bonding strength.

In addition, in this example, the shape of the claw part is approximately square, but
When carrying out the present invention, the present invention is not limited to this, and any material that functions as a claw may be used. for example,
As shown in FIG. 6, various settings can be made, such as a square claw (2b), a triangular claw (2c), and a U-shaped claw (2d).

Furthermore, the number of claws in the joint is not limited to -, and for example, if the joint has an elongated shape as shown in FIG. 6, a plurality of claws may be provided side by side.

<Second Embodiment> Next, a second embodiment of the present invention will be described based on FIGS. 8 to 11.

FIG. 8 is a perspective view showing the state of the steel plates before joining according to the second embodiment of the present invention, FIG. 9 is a sectional view taken along the line D-D in FIG. 8, and FIG. 10 is a second embodiment of the present invention. FIG. 11 is a perspective view showing the state of the example steel plates after they are joined, and FIG. 11 is a sectional view taken along the line EE in FIG. 10.

In the figure, (1) is a steel plate, and two slits (1b) are bored parallel to each other in the center of the plane. A trapezoidal protrusion (lc) is formed between the two slits (1b), and another steel plate can be inserted into the gap between the protrusion (1c) and the flat surface. (2) is a strip-shaped steel plate that is inserted into the gap between the protrusion (1c) of the steel plate (1).

The steel plates of the second embodiment constructed in this manner are joined as follows.

First, the steel plate (2) is passed through the gap between the protruding part (1c) and the flat part of the steel plate (1). At this time, the protrusion (I
The steel plate (2) is made to protrude from both edges of C) by the required length (see Figures 8 and 9).

Next, press the protrusion (1c) downward until the upper surface of the protrusion (1c) is at the same height as the upper surface of the steel plate (2) (see Figures 10 and 11), the steel plate (1 ) and steel plate (2)
Both deform each other at the joint to complete the joint.

In this way, the steel plate welding apparatus of the second embodiment has a steel plate (1
) The steel plate (2) is passed through the gap between the flat part and the protruding part (IC), and the protruding part (1c) of the steel plate (1) is joined by pressing it downward with the steel plate (2) until there is no difference in level. be.

Therefore, according to this embodiment, the same effects as in the first embodiment can be obtained. In particular, in this example, the steel plate (2) is the steel plate (
Since the protruding part (1c) of 1) is bent at two places on both ends, the rigidity of the steel plate (2) is increased and it becomes difficult to deform.
Furthermore, the bonding strength is improved.

Incidentally, in each of the above embodiments, a steel plate is used as the plate-like material, but when carrying out the present invention, the present invention is not limited to this, and various other plate-like materials such as stainless steel, aluminum, etc. It can also be applied to bonding between them or a combination thereof.

Furthermore, although the embodiments of the invention described above are intended for joining metal plates, it goes without saying that the present invention can also be applied to joining other plate-like materials such as plastic plates.

[Effects of the Invention] As described above, the device for joining plate-like objects of the present invention overlaps two plate-like objects by inserting a part of the other plate-like object into the slit of one plate-like object. The two plate-like objects are joined together by pressing the protruding part of the joining part to the same plane height as the other part. Therefore, the total thickness of the two plates after joining is the same over the entire surface, and there are no protrusions, so the appearance quality is improved. In addition, since the two plate-like objects are bent toward each other and their displacement is prevented by the bending portion, loosening due to impact or handling is eliminated, and the bonding strength is improved.

[Brief explanation of the drawing]

1 is a plan view showing a welding state in a welding apparatus for plate-shaped objects according to a first embodiment of the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG. FIG. 4 is a cross-sectional view showing the joining state of FIG. 2, and FIG. 5 is a perspective view showing an example of application of the first embodiment of the present invention to a joining apparatus for plate-like objects. 6 is a plan view showing the shapes of various joints of the plate-like article according to the first embodiment of the present invention, FIG. 7 is a sectional view taken along the line C--C in FIG. 6, and FIG. A perspective view showing a state before joining of steel plates in a plate joining apparatus according to a second embodiment of the invention, FIG. 9 is a sectional view taken along the D-cutting line in FIG. 8, and FIG. A perspective view showing the state of steel plates after welding in the plate welding apparatus of the second embodiment, FIG. 11 is a sectional view taken along the line E-F in FIG. 10, and FIG. 12 shows the state of joining of conventional steel plates. 13 is a sectional view taken along line FF in FIG. 12, and FIG. 14 is a perspective view of FIG. 12. In the figure, 1.2: m plate 1a, 1b Nislit b. In the drawings, the same reference numerals and the same symbols indicate the same or equivalent parts. Agent: Patent attorney Masuo Daikichi and two others Fig. 2 2a Fig. 3 Fig. 5 Fig. 1C: Projection b Fig. 9C

Claims (1)

[Claims] A slit is provided in one plate-like object, a part of the other plate-like object is inserted through the slit, the two plate-like objects are overlapped, and the part that is inserted and protrudes is at the same plane height as the other part. 1. An apparatus for joining two plate-shaped objects, characterized in that the two plate-shaped objects are joined by pressing until they become .