JPS58168298A - Method of coupling plate member - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical field of the invention The present invention relates to reforming a method of joining sheet metal members.
Prior Art and Problems Processing sheet metal materials into various shapes and combining them to form a desired structure is often performed, for example, for housings, electronic device units, and cases.

As shown in Fig. 1 and Fig. 2, in the nine-way printed board storage box and unit storage shelves, the left and right side plates 1, 2 and the upper and lower 1[3,
4 and intermediate plate 5. Each! Each suitable thin metal plate material is processed into a predetermined shape, and these are placed in the illustrated state K11ll1
Assemble it together.

As a means for this connection, a protrusion 1a is formed by punching or punching in the side plate 1 of the tatami part tsumugiagai kyuken shown in FIG. The screws are made 1ljll, and the upper or "" is connected and fixed with the screw 6 that passes through the lower plate 3, and the screw thong, screw tip, protrusion 11, etc. protrude from both sides, which impairs mounting performance. In the case shown in 0(b), a hole is provided in both and the screws 6 and nuts 7 are used to connect and fix the screws. Assembling is difficult due to the protrusion of the plate and the unevenness.On the other hand, using KxnIiI screws to eliminate the O protrusion is inappropriate when the plate material is thinner than the height of the countersunk head.

(c) uses -9 rivets, but in addition to requiring 8 rivets,
Special caulking must be done by the calendar test in #8.
There are strength problems depending on the combination of materials. Due to the above reasons, bonding using points ll, 11, etc. requires an O jig, etc. to determine the mutual positions, and it remains in the Ichinoseki due to surface treatment such as plating. There is a risk that rust etc. may occur later due to the chemical-casing, etc.

(3) Purpose of the Invention In view of the above-mentioned conventional problems, the present invention provides nine bonding methods that have sufficient bonding strength even for thin plate materials, do not require separate parts, and can be bonded after surface treatment. For the purpose of providing.

(4) Structure of the Invention ゛The structure of the method of the present invention for achieving the above object is to press one side of the sheet metal member from the other side to further press the first protrusion with a predetermined outer diameter and the third protrusion. A second protrusion is made to protrude, and a recess that can be expanded by communicating with the hole that fits the protrusion of the bow and the crease hole is provided in the self-fixing member that is fixed to the steel sheet metal member, and the first protrusion is inserted into the hole. According to a method of depositing a sheet metal member, the second protrusion is pressed into the recess and expanded and deformed to be fixed and locked.

(5) Embodiments of the Invention Examples of the method of the present invention will be specifically described below with reference to the drawings. 4 to 6 are diagrams showing the joining procedure of an embodiment according to the joining method of the present invention. In FIG. A first circular trapezoidal projection 13 with a large diameter is pressed and formed using a non-stick gouger and a punch, and a further KIN- projection 13 is formed on this first projection 1a.
The second protrusion 14 having a diameter of I is formed in a compressed manner.

Such a two-stage protrusion is formed by punching from [12] to form a two-stage recessed hole 15 using a press machine, so that a necessary and sufficient height B can be obtained even if the plate is a thin plate.

On the other hand, for example, there is a protrusion 1lls on the bent edge surface 31 of the upper part 1 [30], and a protrusion 1 hidden on the part 3211 facing the upper part 14.
3f: A fitting hole 33 is drilled to enable fitting, and a connecting portion 35 that communicates with and expands the hole 38 is formed on the other surface 34@. For the thickness A of the upper plate 30, the front 1111 [10
The protrusion height B is set to be high O. The protrusions and holes are formed in a required number with appropriate gaps in the direction perpendicular to the plane of the paper.

Next, as shown in FIG. 5, the side plate 10 and the upper plate 30 are brought close to each other, and the first protrusion 13 is fitted into the hole 33. Face 11
and 32 are in close contact with each other, and the upper end of the first projection 13 and the second projection 14 protrude into the recess 35, and the tip of the second projection 1051 also projects beyond the plate surface 34.

In this state, as shown in FIG.
At the same time as inserting the second protrusion 14, the caulking header 52 is applied to the center of the second protrusion 14, and the second protrusion 14 is pressed down and the recessed hole 15 is placed. Since a conical protrusion (not limited to a conical shape) 54 protrudes from the center K of the end surface 53C1 of the caulking header 52, it is press-fitted, and an indentation 16 is formed by this in most part, and the protrusion 14 is flattened. The concave hole 35 is reliably drilled and the bonding strength is sufficiently guaranteed.

Suppression of the protrusions is carried out sequentially, and the same treatment is applied to all other parts (not shown).◎ As described above, according to the method of the present invention, there is no need for a special joining member, and even thin plates can be formed in two stages. Since the shaped protrusions provide a sufficient protrusion height relative to the plate thickness, the bonding strength is sufficiently guaranteed.

By forming a concave portion communicating with the hole as in the embodiment, there is no protruding portion on both surfaces, resulting in excellent mounting efficiency.

(6) Effects of the Invention As described above, according to the method of the present invention, a large number of protrusions and holes are continuously processed using a processing expansion press machine, and
Since the joining work can be carried out in an assembly line manner using a 4-press device, assembly is easy and automation is possible.

Since the structure of the joint part is obtained from the electric sheet metal members themselves to be joined, the joint strength is appropriate.

The relationship can also be a highly accurate dimensional relationship.

Of course, since there are no peaks in the joining part, it is suitable for mounting and appearance, and since it is possible to join after surface treatment such as plating, it is convenient for transporting and storing the parts as a single unit, and it is convenient for later invitations. There is no such occurrence.

It goes without saying that the method of the present invention is applicable not only to cases and boxes, but also to similar sheet metal joints in all fields.

[Brief explanation of the drawing]

Figures 1 and 2 are perspective views and front views of the printed board storage box and unit storage shelf, and jI3WjA is a conventional connection of board members (a) with screws, (b) screws and nuts. , (c) shows the main parts of the riveting process, and Figures 4E to 6 show the joining procedure according to the method of the present invention. Figure 3 shows before joining, Figure 4 shows the fitted state, and Figure 6 shows the joined state. . In the figure, 10 is a side plate, 30 is an upper or lower plate, 13 is a 10th projection, 14 is a 20th projection, 33 is a hole, 35 is a recess, 14
′ is the pressed 20th protrusion part. ) Rate 1 Figure 3 Figure 4 Figure 5 Rate Figure 6

Claims (1)

[Claims] Holding member 〇Press one surface from the other surface to make a second projection protrude above the 10th projection with a predetermined outer diameter and the 2nd projection, and form a stop to be fixed to the sheet metal member. The mounting member is provided with a hole that fits the first protrusion and a recess that communicates with the hole and expands, and the first protrusion is fitted into the hole and the second op opening is pressed into the recess and expanded and deformed. How to join sheet metal members to be fixed and locked 0