JPS5911484Y2 - Printed circuit board support device - Google Patents

Description

[Detailed description of the invention] This invention relates to a device for attaching electrical components such as air conditioners to an electrical component mounting box, and in particular relates to a device for supporting and fixing a printed circuit board. It is an object of the present invention to provide a support device for a printed circuit board that does not apply unnecessary force to the printed circuit board during transportation of a product such as a harmonizer, and that has a small number of parts.

An embodiment of this invention will be described below with reference to the drawings.

In Fig. 1, 1 is the air conditioner main body, 2 is an electrical component mounting box that is fixed to the air conditioner main body 1 with screws, etc., and this electrical component mounting box 2 is made of a one-piece plastic molded product. has been done.

1 to 3, reference numeral 3 denotes a pair of opposing U-shaped slide grooves formed integrally with one side of the electrical component mounting box 2, and these slide grooves 3 are rectangular. Alternatively, the mutual spacing and groove width are designed to match the width a and thickness b of the square printed circuit board 6.

Reference numeral 4 denotes a pair of elastic claw pieces that are formed integrally with the electrical component mounting box 2 on a plane connecting the rear end faces of the slide groove 3, and these claw pieces 4 are inclined at a certain angle. Gaps are provided on three sides around the slide groove 3 so as to protrude toward the entrance side of the slide groove 3 and elastically deform toward the back side of the slide groove 3 when stress is applied.

5 is a boss for fixing the terminal board 7 with screws 8, and the outer end surface is arranged near the slide groove 3 of the electrical component mounting box 2;
Distance C from the tip of the claw piece 4 to the bottom of the terminal board 7 when installed
is made slightly smaller than the length d of the printed circuit board 6.

The Phnom substrate 6 is generally made of Bakelite, glass,
It is made of epoxy resin and has various electronic parts soldered to it, making it vulnerable to shocks and vibrations.

Further, the terminal board 7 is for controlling the operation of the air conditioner, and has a rectangular shape with a flat bottom surface, and mounting pieces 7 a and 7 b protrude from the left and right sides.

Reference numeral 9 denotes a retaining hole of one mounting piece 7b of the terminal board 7, which is provided on the side of the electrical component mounting box 2.

In order to mount the printed circuit board 6 to the electrical component mounting box 2 using the support device for the printed circuit board 1 and the circuit board consisting of the various parts described above, first insert the printed circuit board 6 into the slide groove 3 along the longitudinal direction of the inner end. Insert it until it touches the claw piece 4.

Next, one mounting piece 7b of the terminal board 7 is engaged with the retaining hole 9 while pressing the outer end of the printed circuit board 6, and the other mounting piece 7a is tightened to the boss 5 with the screw 8. When fixed, the printed circuit board 6 is supported and fixed by being sandwiched by the slide groove 3 in the vertical direction and between the claw pieces 4 and the bottom surface of the terminal board 7 in the depth direction.

In this case, since the distance C between the tip of the claw piece 4 and the bottom surface of the terminal board 7 is slightly smaller than the length d in the depth direction of the printed circuit board 6, and the claw piece 4 is made of plastic, These are elastically deformed by d−c, and serve as a spring that constantly presses the printed circuit board 6 against the bottom surface of the terminal board 1.

As explained above, according to this invention, the printed circuit board 6 is supported and fixed by the elastically deformed claw pieces 4 and the electrical components such as the terminal board 7, so that stress is not applied to the printed circuit board 6 during transportation. Even in the past, the elastically deformed claw pieces 4 played the role of a cushioning material, and no more than necessary stress was applied to the printed circuit board 6, thereby preventing damage to the easily fragile printed circuit board 6. Since the printed circuit board 6 can be fixed at the same time as the electrical parts such as the terminal board 7, the work time can be shortened and the number of fixing parts can be reduced.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an example of an electrical component mounting box equipped with a printed circuit board support device according to this invention installed in an air conditioner, and Fig. 2 shows an embodiment of the printed circuit board support device according to this invention. FIG. 3 is an explanatory cross-sectional view of the exploded perspective view. 2...Electrical component mounting box, 3...Slide groove, 4...Claw piece, 6...Printed circuit board, 7...Terminal Board. Note that the same reference numerals in the figures indicate the same parts.

Claims (1)

[Scope of utility model registration request] A pair of opposing U-shaped slide grooves 3 that match the thickness and width of the rectangular or square printed circuit board 6 are formed in a part of the electrical component mounting box 2, and the rear end surfaces of these slide grooves 3 are connected. A claw piece 4 which is elastic and projects obliquely toward the entrance side of the slide groove 3 on a plane is formed integrally with the electrical component mounting box 2 from plastic, and a printed circuit board 6 is inserted into the slide groove 3. A printed circuit board support characterized in that an electrical component such as a terminal board 7 is fixed near the slide groove 3 of an electrical component mounting box 2, and a printed circuit board 6 is supported and fixed by this component and elastically deformed claw pieces 4. Device.