JPH0631204Y2 - Fastening mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] Regarding a mechanism for fastening a second substrate made of a second member to a first substrate made of a first member having a planar shape, parts such as screws and bolts are used. First, for the purpose of fastening without causing loosening, a hook having a downward projection at a position where one end of the second substrate comes into contact with the first substrate, and the other end of the second substrate comes into contact with the first substrate. With multiple snap fits in position, while
The second substrate has a hole into which the protrusion can be inserted at the hooking contact position, and after the hole of the second substrate is inserted into the hooking protrusion provided on the first substrate, the second substrate is inserted. The first
It is configured such that the second substrate is pressed down and pressed in the direction of the substrate to fix the second substrate by a plurality of snap fits.

[Industrial application field]

The present invention relates to a mechanism for fastening a second substrate made of a flat plate-shaped second member to a first substrate made of a flat plate-shaped first member.

In order to install power terminals for input / output lines in a case made of plastic for electronic equipment, or to mount mechanical parts,
When not in use, open a rectangular part of the case made of plastics, insert a sheet metal processed metal plate into this, or provide a part of the case with a window for connection with an option It is common practice to fit and seal a metal plate on the.

The present invention relates to a fastening method for two members used in such an application.

[Conventional technology]

Parts such as screws, nuts, and retaining rings are used to fasten the two members.

However, the use of such fasteners increases the number of components.

It takes time to assemble.

Difficult to automatically assemble.

There are problems such as.

Especially when screws are used, problems such as tightening torque and loosening due to vibration become problems.

FIG. 3 shows a conventional structure in which a second substrate 2 made of a second member is fastened to a first substrate 1 made of a flat plate-like first member. (Two in this case)
Fixed by hooks 3 and 3 ', and the other end is plural (in this case, 2
It is fixed with screws 4 and 4 '.

However, this increases the number of parts and the number of man-hours.

Therefore, it is desired to put into practical use a fastening method that can be fixed with one touch and does not loosen.

[Problems to be solved by the invention]

Until now, it has been customary to use parts such as screws and nuts as a method of fastening two members, but it is possible to fix with one touch without loosening without using fasteners such as screws and nuts. The challenge is to find the structure.

[Means for solving problems]

The above problem is that the first substrate is provided with a hook having a downward projection at a position where one end of the second substrate contacts, and a plurality of snap fits at a position where the other end of the second substrate contacts. The second substrate has a hole into which the protrusion can be inserted at the hook contact position, and after the hole of the second substrate is inserted into the hook protrusion provided on the first substrate, the second substrate is inserted. This can be solved by pressing down the substrate in the direction of the first substrate to apply pressure and fixing the second substrate by a plurality of snap fits.

[Action]

According to the present invention, a first substrate made of a first member is provided with a hook having a protrusion and a plurality of snap fits, and a hole of a second substrate made of a second member is provided in the first substrate. It is fitted into a hooking projection, pressed against the first substrate side using this portion as a fulcrum, and fastened by snap fit.

FIG. 1 is a sectional view showing a state in which a second substrate 6 made of a second member is fastened to a first substrate 5 made of a first member, and FIG. 2 is a partial sectional view in the vicinity of a hooking portion. Is.

That is, the first board 5 has one hook 7 and a plurality of snap fits 8, the hook 7 is provided with a downward projection 9, and the second board 6 is inserted below the hook 7. A groove 10 is made for ease. On the other hand, the second substrate 6 is provided with a hole 11 into which the protrusion 9 can be inserted, and after the hole 11 of the second substrate 6 is aligned with the protrusion 9, the second substrate 6 is laid down on the substrate 5 side, and the opposite end surface Is fixed by a snap fit 8.

It is needless to say that the second substrate is not necessarily a flat plate except for the attachment portion to the first substrate and may have any shape.

〔Example〕

FIG. 4 is a perspective view of the first substrate of the embodiment, FIG. 5 is a perspective view of the second substrate, and FIG. 6 is a perspective view of a process of mounting the second substrate on the first substrate.

That is, the first substrate 5 has two snap fits 8 and 8 ', and the hook 7 having the protrusion 9 is provided on the opposite side.

Further, the first substrate 5 provided with the hook 7 is provided with a groove 10 for facilitating the insertion of the second substrate 6.

Further, the second substrate 6 in FIG. 5 is provided with a hole 11 into which the protrusion 9 of the first substrate is inserted.

Then, as a fastening method, as shown in FIG. 6, after aligning the hole 11 of the second substrate 6 with the protrusion 9 of the hook 7,
The edge of the second substrate 6 was pressed against the first substrate 5 and fixed by two snap fits 8.

By adopting such a mechanism, it was possible to perform fastening without loosening with a one-touch.

[Effect of device]

According to the embodiment of the present invention, when fastening the second substrate made of the second member to the first substrate made of the first member, the workability is fixed by one touch without using screws and nuts as in the prior art. It can be performed.

[Brief description of drawings]

 1 is a sectional view showing a fastening state according to the present invention, FIG. 2 is a partial sectional view in the vicinity of a hook portion, FIG. 3 is a perspective view showing a conventional fastening mechanism, and FIG. 4 is a perspective view of a first substrate. FIG. 5 is a perspective view of the second substrate, and FIG. 6 is a perspective view of the mounting process. In the figure, 1,5 is a first substrate, 2,6 is a second substrate, 3,3'7 is hooked, 8,8 'is a snap fit, 9 is a protrusion, 10 is a groove, 11 is a hole, is there.

Claims (1)

[Scope of utility model registration request] 1. A mechanism for fastening a second substrate (6) made of a second member on a first substrate (5) made of a first member is provided in the first substrate (5). Hook (7) having a downward protrusion (9) at a position where one end of the second substrate (6) abuts
And a plurality of snap fits (8) at positions where the other end of the second substrate (6) abuts, while the second substrate (6) is at the abutting position of the hook (7). A hole (11) into which the protrusion (9) can be inserted is provided, and the protrusion (9) of the hook (7) provided on the first substrate (5) is fitted into the hole (11) of the second substrate (6). After the insertion of the second substrate (6), the second substrate (6) is pushed down in the direction of the first substrate to apply pressure, and the second substrate (6) is fixed by a plurality of snap fits (8). A fastening mechanism characterized by the above.