JPH0215347Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a mechanism for in-vehicle audio equipment and a device for attaching a substrate to a bottom plate.

(b) Prior Art In recent years, in order to miniaturize car stereos and the like, a board has been placed between the mechanism and the bottom plate in order to effectively utilize the space (see Utility Model Application Publication No. 12988/1988). However, because the positioning of the mechanism, the board, and the bottom plate is insufficient, a jig is required to prevent the mechanism from wobbling until the mechanism is fixed with screws, resulting in a problem of high assembly man-hours and high costs. It was hot.

Furthermore, when the mechanism's mounting bracket is tightened,
There was also the problem that the force of tightening the screws caused deformations such as twisting and warping, and that the mounting position of the mechanism was shifted.

(c) Purpose of the invention In view of the above-mentioned problems, the present invention provides a mechanism and board mounting device that requires fewer assembly steps and does not require any jigs during assembly, and does not cause deformation of the mechanism fixture.

(d) Configuration The configuration of the present invention is as follows. That is, bridge-like protrusions are provided at a plurality of locations on the bottom plate, and each bridge-like protrusion has a cut-and-raised piece and a screw insertion hole. The substrate attached to the bottom plate is provided with positioning holes and screw insertion holes at positions corresponding to the cut and raised pieces of the bridge-like protrusion and the screw insertion holes, respectively. The mounting tool for the mechanism is provided with positioning holes and screw holes at positions corresponding to the positioning holes and screw insertion holes of the printed circuit board, respectively. Then, insert the cut and raised piece of the bridge-like protrusion into the positioning hole of the board and the positioning hole of the mechanism mount, and insert the screw into the screw insertion hole of the bridge-like protrusion and the screw insertion hole of the board. The bottom plate, the substrate, and the mechanism are integrally fixed by screwing into the screw hole of the mechanism fixture.

(E) Example An example of the present invention is shown below in Figures 1 and 2.
This will be explained using figures. FIG. 1 is an exploded perspective view of an embodiment of the present invention.

The bottom plate 1 is provided with three bridge-like protrusions 2, and each of the bridge-like protrusions 2 has cut and raised pieces 2a, 2a and a screw insertion hole 2b, as shown in FIG. The printed circuit board 3 has positioning holes 3a, 3a at positions corresponding to the cut and raised pieces 2a, 2a of the bridge-like protrusion 2, and screw insertion holes 3b at positions corresponding to the screw insertion holes 2b of the bridge-like protrusion 2. is provided. Mechanism fixtures 5 are fixed to the mechanism 4 at three locations (two of which are not shown), and the mechanism fixtures 5 are fixed to the printed circuit board 3.
A positioning hole 5 is located at a position corresponding to the positioning hole 3a of
a. A screw hole 5b is provided at a position corresponding to the screw insertion hole 3b of the printed circuit board 3. The cut and raised pieces 2a, 2a have a length sufficient to allow the printed circuit board 3 and the mechanism fixture 5 to be inserted therethrough.

For assembly, first insert the cut and raised pieces 2a, 2a provided on the bridge-shaped convex portion 2 of the bottom plate 1 into the corresponding positioning holes 3a, 3a of the printed circuit board 3, and then insert the cut and raised pieces 2a, 2a into the mechanism. Insert into the corresponding positioning hole 5a of the fixture 5, and connect the bottom plate 1 and the printed circuit board 3.
and the mechanism 4 is temporarily fixed together. As a result, the printed circuit board 3 and the mechanism 4 are temporarily fixed at three locations by the cut and raised pieces 2a, 2a provided on the bridge-like convex portion 2 of the bottom plate 1, so that the positional shift is prevented by the time the screws 6 are tightened into the screw holes 5a. Does not occur.
Furthermore, during screw tightening, since the cut and raised piece 2a is inserted into the positioning hole 5a of the mechanism fixture 5, it serves to substantially increase the rigidity of the fixture 5 against the screw tightening force. Deformation such as twisting or warping of the fixture 5 does not occur.

(f) Effects of the invention As described above, according to the invention, the mechanism, the board, and the bottom plate are sufficiently positioned until the screws are tightened, and there is no wobbling of the mechanism, so no special jig is required. , it is possible to perform screw tightening work (automatic screw tightening work if necessary), and the number of assembly steps can be reduced, so costs can be lowered compared to conventional methods.

Additionally, since the cut-and-raised piece is inserted through the mechanism's fixture, it serves to substantially increase the rigidity of the fixture against the screw tightening force, and as a result, deformation such as twisting or warping of the fixture may occur. This allows the mechanism to be installed correctly in place.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of one embodiment of the present invention;
The figure shows a cross-sectional view of the bridge-like convex portion. DESCRIPTION OF SYMBOLS 1... Bottom plate, 2... Bridge-shaped convex part, 3... Printed circuit board, 4... Mechanism, 5... Mechanism fixture, 6... Screw.

Claims (1)

[Claims for Utility Model Registration] A bottom plate provided with a bridge-like protrusion having cut and raised pieces and screw insertion holes at multiple locations, and positioning holes and screw insertion holes at positions corresponding to the cut and raised pieces and screw insertion holes. A base plate provided with a hole, a mechanism mounting tool provided with a positioning hole and a screw hole at positions corresponding to the positioning hole and the screw insertion hole, respectively, and a screw, the cut-and-raised piece of the bridge-shaped convex portion being provided with a screw. Insert the screw into the positioning hole of the board and the positioning hole of the mechanism mount, and insert the screw into the screw insertion hole of the bridge-shaped convex part and the screw insertion hole of the board, and screw into the screw hole of the mechanism mount. A mechanism and board mounting device characterized in that the bottom plate, the board, and the mechanism are integrally fixed by doing so.