JPH0110944Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a housing for electronic equipment that includes a printed wiring board inside.

For electronic devices that have a printed wiring board inside, when fixing this printed wiring board to the housing,
This was generally done with screws or the like. Therefore, during the fixing process, it is necessary to align the screw holes of the printed wiring board one by one, which not only makes the work inefficient, but also requires a large amount of manufacturing man-hours, as the screw fixing process itself is complicated. It also became a hindrance and caused an increase in costs.

In addition, in order to reduce manufacturing man-hours and facilitate production automation, an elastic board-locking piece with board-locking claws is provided inside the housing at its tip, and its elasticity can be used to secure printed wiring boards. It is also possible to lock and fix it. However, when pin jacks, F connectors, etc. are attached to the printed wiring board, a large force is applied to the printed wiring board when attaching or removing the pin plug, etc., and the elastic locking of the board locking piece cannot support the printed wiring board. There was a possibility that it would come off, so it was not practical.

The present invention was developed by focusing on these points, and it is an electronic device that does not cause the printed wiring board to become unattached even when attaching or detaching pin plugs, etc., and is suitable for automatic production with fewer manufacturing steps. It provides a housing for equipment, and its gist is that it includes a board support part with a support surface for supporting a printed wiring board, and a printed wiring board supported by the board support part inside. A lower casing having a bottom plate provided with a board locking claw for locking, and an elastic board locking piece provided with a locking step on the outside and standing from a peripheral edge, and the locking step. The electronic device casing includes an upper casing having a top plate having an elastic assembly latching piece provided on the inside with an assembly latching claw that fits into the periphery of the top plate. Embodiments will be described in detail below according to embodiments shown in the drawings.

Fig. 1 is a perspective view showing the external appearance of an embodiment of the present invention, Figs. 2 and 3 are sectional views taken along the - line and sectional view taken along the - line, and Figs. 4 and 5 are exploded views thereof. , - line or - line. In these FIGS. 2 to 5, internal structures not directly related to the present invention are omitted, and cross sections of the printed wiring board and F connector are not taken. In the figure, 1 is the lower case, 2 is the upper case,
The electronic device casing of the present invention is composed of both. Further, 3 is a printed wiring board that is housed and fixed within the electronic device housing, and 4 is an F connector attached to this printed wiring board 3.

A side wall 11 is provided at the periphery of the bottom plate 10 of the lower casing 1, and a pair of opposing side walls 11 has a board locking piece 12 formed at the center thereof. This board locking piece 12 has a board locking claw 13 facing inward at its upper end, and a locking step 14 on the outside of the base.
A predetermined elasticity is provided by providing slits 15 on both sides thereof.
In addition, slits 15 are provided on both sides of this board locking piece 12.
A printed wiring board 3 is attached to the side wall 11 which is continuous through the side wall 11.
A board support part 17 is formed which has a support surface 16 at its upper end on which the board is placed and supported.

The printed wiring board 3 is placed between the board locking claws 13 of the board locking piece 12 arranged to face the periphery of the bottom plate 10 of the lower casing 1 formed in this way, and is further pressed down. It is then fixed. At this time, the board locking claws 13 open outward once due to the pressure applied to the printed wiring board 3, but once the printed wiring board 3 has passed, they return to their initial state due to the elasticity of the board locking pieces 12. . As a result, the printed wiring board 3 is prevented from moving in the vertical direction by the support surface 16 of the board support portion 17 and the board locking claws 13 of the board locking piece 12, and is locked and fixed.

Further, a side wall 2 is also provided on the periphery of the top plate 20 of the upper housing 2.
1 and a pair of opposing side walls 21
An assembly locking piece 22 extends downward from the center of the lower housing 1 in correspondence with the board locking piece 12 of the lower casing 1 . This assembly locking piece 22 has a flat plate shape with an assembly locking claw 23 protruding inwardly at its tip portion, which engages with the locking step 14 provided on the board locking piece 12. It itself has appropriate elasticity. Reference numeral 24 denotes a through hole drilled in the center of the top plate 20, through which the F connector 4 attached to the printed wiring board 3 is connected.
protrudes outward from here.

This upper casing 2 is placed on the lower casing 1 to which the printed wiring board 3 is locked and fixed as described above, and when it is further pushed down, the upper casing 2 is attached to the locking stepped portion 14 of the lower casing 1. The retaining claws 23 are engaged, and the lower housing 1 and the upper housing 2 are assembled to complete a housing for electronic equipment. At this time, the board locking piece 12 of the lower case 1 is prevented from deflecting outward by the assembly locking piece 22 of the upper case 2, so a large force is applied to it when connecting the F connector 4, etc. Even if this occurs, the printed wiring board 3 will not be disengaged from the board latching claws 13.

As explained in detail above, in the electronic device casing of the present invention, the movement of the board locking pawl that locks and fixes the printed wiring board is controlled by the assembly for assembling the electronic device casing. Since the locking piece is used to prevent the printed wiring board from becoming unlatched due to external force, even if the printed wiring board is locked using the elasticity of the board locking piece. ,
It is possible to provide electronic device casings that require fewer manufacturing steps and are suitable for automated production.

Although the above embodiments have been described in detail, the present invention is not limited to these examples. Various variations are included, such as one in which the engagement structure of the stopper piece is a recess and a protrusion, and one in which the board locking piece, the assembly locking piece, etc. are formed separately from the lower casing, the upper casing, etc.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the appearance of an embodiment of the present invention, Fig. 2 is a cross-sectional view taken along the - line, and Fig. 3 is -
FIG. 4 is an exploded sectional view taken along the - line, and FIG. 5 is an exploded sectional view taken along the - line. 1...Lower casing, 2...Upper casing, 3...Printed wiring board, 4...F connector, 10...Bottom plate, 11, 21...
...Side wall, 12... Board locking piece, 13... Board locking claw, 14... Locking step, 15... Slit, 16
...Supporting surface, 17... Board support portion, 20... Top plate, 22... Assembly locking piece, 23... Assembly locking claw,
24...Through hole.

Claims (1)

[Scope of utility model registration request] A board support portion having a support surface for supporting a printed wiring board, a board locking claw for locking the printed wiring board supported by the board support portion on the inside, and a locking stepped portion on the outside. a lower casing having a bottom plate with an elastic board locking piece standing upright from the peripheral edge; and an elastic assembly locking member having an assembly locking claw provided inside to fit into the locking step. A casing for electronic equipment consisting of an upper casing having a top plate with a stopper standing from the periphery.