JPH0580839B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a printed wiring board and a mounting device for electronic components and the like mounted on the printed wiring board.

Configuration of conventional example and its problems Figure 1 shows a conventional mounting device for a printed wiring board and a cabinet, in which 1 is a printed wiring board, 2 is a heat sink mounted on the printed wiring board, and 3 is a mounting device for mounting a printed wiring board and a cabinet. 4 is a mounting angle, 4 is a screw, 5 is a cabinet, and 5a is a partition plate that partitions the inside of the cabinet, and is fixed to the cabinet 5. A mounting angle 3 is attached to a printed wiring board 1 on which electronic components and a heat sink 2 are attached with screws 4,
The mounting angle 3 is fixed to the partition plate 5a with screws 4. FIG. 2 is a side view of FIG. 1.

However, in the above configuration, it is necessary to tighten the screws 4 and 4 in order to fix the printed wiring board 1 and the cabinet 5. Direction is limited, mounting angle 3 and partition plate 5
The tightening operation of the screw 4 with the partition plate 5a had to be performed from the bottom side of the partition plate 5a, which posed a problem in that the operation was difficult.

Purpose of the Invention The present invention solves the above-mentioned conventional problems by reducing the number of screws required for fixing electronic components and printed wiring boards inside equipment to a cabinet, and by facilitating equipment assembly work and improving work efficiency. The purpose is to improve

Structure of the Invention The present invention uses a fixture that integrally forms a part for sandwiching an electronic component or a printed wiring board and a part for sandwiching a part of a cabinet, to attach an electronic component or a printed wiring board to a cabinet. By sandwiching the parts together, it is possible to attach and fix them to each other without having to tighten screws.

DESCRIPTION OF EMBODIMENTS FIG. 3 is a perspective view showing the configuration of a mounting device for electronic components, etc. in a first embodiment of the present invention, and FIG. 4 is a side view thereof. In FIGS. 3 and 4, 6 is a printed wiring board, 7 is a heat sink, 8 is a fixture,
9 is a screw, 10 is a cabinet, 11 is a rear plate of the device, and 12 is a heat dissipation semiconductor fixed to the heat dissipation plate 7 with screws 9. The heat sink 7 is attached to the printed wiring board 6 with screws 9, and when it is assembled inside the cabinet 10, the bottom portion 7b of the heat sink is in close contact with the upper surface of the partition plate 10a inside the cabinet.

Next, while engaging the protruding part (third bent part) of the fixture 8 and the notch part 7a of the heat sink bottom part 7b,
The heat dissipation plate bottom 7b and the partition plate 10a are sandwiched between the fixing fittings 8 at the same time. In order to facilitate the sandwiching operation, the fixture 8 has a guide part 8b (first bent part) that elastically holds the heat sink 7 held on the printed wiring board 6 toward the cabinet 10, and a guide part 8b (first bent part) that holds the cabinet 10. A guide portion 8d (second bent portion) that is elastically held toward the heat sink 7 side is provided.

Next, the rear plate 11 is tightened and fixed to the cabinet 10 with the screws 9, and the fixing fittings 8 are fixed. In this way, the fixing bracket 8 can be connected to the rear plate 11 and the cabinet 10.
The fixing bracket 8 is positioned by the notch 7a of the bottom part 7b of the heat dissipation plate. Work becomes easier.

As described above, according to this embodiment, the fixing fitting has a part in which a part of the cabinet and a printed wiring board or a component attached to the printed wiring board are simultaneously sandwiched, and a guide part that is inclined outward from the sandwiching part. By integrally providing a protrusion that fits in a partial cutout of the part to be fixed, the cabinet and printed wiring board or components on the printed wiring board can be attached without screws or screw tightening work. Can be fixed.

5 and 6 are a perspective view and a side view of an electronic component mounting apparatus showing a second embodiment of the present invention. Fifth
In FIG. 6, 13 is a printed wiring board;
14 is a heat sink, 15 is a fixture, 16 is a screw, 1
7a is a partition plate inside the cabinet, 18 is a rear plate,
Reference numeral 19 denotes a heat dissipation semiconductor, which has the same structure as that of the first embodiment, except that the heat dissipation plate 14
The two features are that there is no bottom part of the heat dissipation plate, and that the fixture 15 is provided with a protrusion 15c (fourth bent part).

According to the second embodiment configured as described above, the heat sink 14 and the printed wiring board 13 are
Even if the printed wiring board 13 and the partition plate 17a are not in close contact with each other, the protrusion 15c that fits into the gap between the printed wiring board 13 and the partition plate 17a is integrally provided on the fixing metal fitting 15, thereby fixing the printed wiring board and the cabinet. can be held more reliably and firmly.

In the first and second embodiments, the heat sink 7 is used as the sandwiched component, but other components mounted on the printed wiring board may also be used. Although the printed wiring board 13 and the printed wiring board 13 are brought into close contact with each other and sandwiched between the fixing fittings 15, it is also possible to fix the printed wiring board 13 by sandwiching only the printed wiring board 13.

Effects of the Invention The present invention holds electronic components such as a printed circuit board or a heat sink and a partition plate in a part of the metal fitting, positions the metal fitting by the notch of the partition plate, and attaches a rear plate to the partition plate. By using screws to fix the metal fittings, the number of screws is reduced, resulting in a significant reduction in screw tightening man-hours, and workability is greatly improved due to the elimination of screw tightening work from the bottom of the partition plate. This makes it possible to realize this and has great industrial effects as a mounting device for electronic parts, etc.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional mounting device for electronic components, etc., FIG. 2 is a side view of FIG. 1, and FIG. 3 is a perspective view of a mounting device for electronic components, etc. according to the first embodiment of the present invention. FIG. 4 is a side view of FIG. 3, FIG. 5 is a perspective view of a mounting device for electronic components, etc. in the second embodiment,
FIG. 6 is a side view of FIG. 5. 6,13...Printed wiring board, 7,14...
Heat sink, 8, 15... Fixing metal fittings, 9, 16... Screws, 10, 17... Cabinet, 11, 18...
...Rear plate, 12, 19... Heat dissipation semiconductor.

Claims (1)

[Scope of Claims] 1. A first bent portion that elastically holds the heat sink held on the printed wiring board toward the cabinet, and a second bent portion that elastically holds the cabinet toward the heat sink. and a fixing fitting integrally formed with a third bent portion that engages with the notch of the heat sink for mutual positioning, between the cabinet and the rear plate screwed to the cabinet. A mounting device for electronic parts, etc., characterized by being held in place. 2. A fourth bent part is provided at both ends of the fixture, the heat sink is held between the first and fourth bent parts, and the cabinet is held between the second and fourth bent parts. A mounting device for electronic components, etc., as set forth in claim 1.