JP2508644Y2 - Printed circuit board mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a printed circuit board mounting structure, and more particularly to a printed circuit board mounting structure for mounting a plurality of printed circuit boards in a housing.

[Conventional technology]

As shown in FIG. 2, the conventional printed circuit board mounting structure is a structure in which three printed circuit boards 3a, 4a, 10a are mounted in a box-shaped case 6a having an opening at one end.
a is a boss portion 1 provided in the case 6a and having a predetermined height
Fix to 1a with screws 8. Printed circuit boards that need to be placed at right angles to the front of the chassis due to the direction of the parts
A chassis 10a having a screw seat 13 and the like is used for fixing 10a with a screw 8 for the purpose of fastening to another unit such as a wireless unit connected to the unit as the operation unit. The printed circuit board 4a is inserted into the case 6a, received by the rib 12 of a predetermined height provided on the case 6a side, and the chassis 7a is fixed to the case 6a with the screw 8 so that the tip bent into a U-shape. It is designed to be fixed by pressing. The electrical connection between the printed boards is connected to the printed board 4a, which is the main board, by a cable having a connector 9 at the tip, and the same kind of cable connector 9 is further extended from the printed board 4a of the main board to connect the chassis 7a. The structure was such that it was connected to the wireless unit that connects to the rear through the square hole.

[Problems to be solved by the device]

In this conventional printed circuit board mounting structure, each printed circuit board is connected to the printed circuit board of the main circuit board in the manufacturing process, but since the printed circuit board of the main circuit board is fixed by the chassis, the chassis is used as a case. The printed circuit board floats in the case until it is fixed and is unstable.When fixing the printed circuit board, there is a high possibility that the cable may be caught in the cable.Therefore, it is necessary to form the cable during assembly and maintenance. There is a problem in that the workability is poor and the mounting efficiency becomes poor because it is necessary to secure a space for housing the cable.

[Means for solving the problem]

The printed circuit board mounting structure of the present invention comprises a case having a plurality of ribs for holding a predetermined height and having an opening at one end, and an outer shape of the frame formed by a plastic member in the frame. A plurality of tongue-shaped fitting protrusions having elasticity for fitting a plurality of first printed boards of substantially the same shape on both sides and a second printed board provided in a direction perpendicular to the opening end of the frame body. A spacer having a boss for holding the spacer, and a U-shaped cross section for pressing and fixing the spacer, into which the first printed circuit board is fitted by the plurality of tongue-shaped fitting projections, after the spacer is inserted into the case. And a chassis.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

 FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

Referring to FIG. 1, this embodiment uses a box-shaped case 6 that holds a spacer 1 at a predetermined height and has a plurality of reinforcing ribs 12 and an opening at one end, and a plastic member. It has a plurality of claws 2 which are formed and have elasticity in the vertical direction and which fix the printed circuit boards 3 and 4 with a projection at the tip and a boss 11 which fixes the printed circuit board 10 with screws 8 on one side. It has a spacer 1 and a chassis 7 in which the spacer 1 to which the printed boards 3, 4, 10 are fixed is housed in a case 6 and then pressed and fixed by a tip bent portion 71 having a U-shaped cross section and fixed by a screw 8. It has a structure.

 Next, the assembly of this embodiment will be described.

First, the printed boards 3 and 4 are fixed to predetermined positions by utilizing the elasticity of the pawl portion 2 to the spacer 1 formed of an elastic plastic member and having the pawl portion 2 for fixing the printed board. Next, the printed circuit board 10
It is fixed to the boss portion 11 of the spacer 1 with screws 8 in the direction perpendicular to 3,4.

Next, the spacer 1 on which the printed boards 3, 4, 10 are mounted
Is placed on the rib 12 having a predetermined height in the case 6, and the chassis 7 having the tip bent portion 71 having a U-shaped cross section is fixed to the case 6 by the screw 8.
It is pressed and fixed at the tip bending portion 71 of.

The connection between the printed circuit boards is directly connected to the printed circuit board 4 by the socket type connector 5, and is connected to the wireless unit connected to the rear part by the socket type connector 51 of the same kind attached to the printed circuit board 4.

[Effect of device]

As described above, according to the present invention, the printed circuit board is fixed to the spacer which is formed of the elastic plastic member and integrally has the claw portion and the boss portion for fixing the printed circuit board. By connecting the electrical connection between them with a socket-type connector, housing the spacer in the case, fixing it with the chassis, and making the structure that the spacer and the printed circuit board can be fixed in place by the ribs in the case, The number of screws for fixing the printed circuit board has been further reduced, the printed circuit board can be easily attached to the case, and the number of man-hours for manufacturing and maintenance can be reduced.Because it is not a conventional cable wiring, there is no disconnection due to the wire biting of the wiring, The effect that the mounting efficiency is good and that the electrical test with each printed circuit board combined can be done in the pre-process of mounting in the case. A.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing an example of a conventional printed circuit board mounting structure. 1 ... Spacer, 2 ... Pawl, 3,3a ... Printed circuit board, 4,4a ... Printed circuit board, 5 ... Connector, 6,6a ...
Case, 7,7a …… Chassis, 8 …… Screw, 9 …… Connector, 10,10a …… Printed circuit board, 11,11a …… Boss part, 12…
… Rib, 13 …… Screw seat, 51 …… Connector, 71 …… Bend part at the tip.

Claims (1)

(57) [Scope of utility model registration request] 1. A case having a plurality of ribs also for holding a predetermined height and having an opening at one end, and a case formed of a plastic member on a frame and having a shape substantially equivalent to the outer shape of the frame. A plurality of elastic tongue-shaped fitting protrusions for fitting the plurality of first printed boards on both sides and a boss provided in a direction perpendicular to the opening end of the frame body and for fixing the second printed board. A spacer and a chassis having a U-shaped cross-section for pressing and fixing the spacer, into which the first printed circuit board is fitted by the plurality of tongue-shaped fitting projections, after the spacer is inserted into the case. A printed circuit board mounting structure characterized by.