JPH07131168A - Containing case for printed substrate - Google Patents

Abstract

PURPOSE:To provide a printed substrate containing case body capable of reducing the part numbers for cutting down the screwing man hours. CONSTITUTION:The title printed substrate containing case body provided with a case 10 having a bottom plate 11, a back surface plate 12 and side plate parts 13 provided on right and left side, a cover 30 having a ceiling surface 31 and a front surface 32 fitted to this case 10 is further provided with a printed substrate held in parallel with the back surface plate 12 by an embossed part 19 provided on the side parts, side opposing parts 33 provided on a cover in almost overlapped state with the side plate parts 13 and a substrate abutting part 34 provided on the position almost abutting against the printed substrate on the side opposing parts 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board housing used for a control system or the like, and more particularly to an improvement of a structure having a small number of parts and capable of easily fixing a printed circuit board.

[0002]

2. Description of the Related Art An apparatus for accommodating a printed circuit board is disclosed, for example, in Japanese Utility Model Laid-Open No. 4-85774 proposed by the present applicant. FIG. 3 is a configuration perspective view of such a conventional device. In the figure, the case 10 has a bottom plate 11, a back plate 12, and side plates 13 on the left and right. The front flange portion 14 is provided at an edge near the lower end of the front surface of the bottom plate 11, the ceiling flange portion 15 is provided at an edge near the ceiling surface of the back plate 12, and the substrate flange portion 16 is provided at the side plate 13. The printed board 20 is fixed to the board flange portion 16 by using studs 21. The cover 30 includes a ceiling plate 31 and a front surface 32. The ceiling plate 31 is fixed to the ceiling flange portion 15 with screws, and the front surface 32 is fixed to the front flange portion 14 with screws.

[0003]

However, in order to attach the printed circuit board 20 to the case 10, it is a complicated work such as welding the board flange portion 16 to the side plate 13 and raising the stud 21. In addition, the cover 30 is attached to the case 10.
Although a screw is also used for attaching to, the front surface 32 needs to be screwed in the horizontal direction H and the ceiling surface 31 needs to be screwed in the vertical direction V, and there is a problem that the assembly work takes time. The present invention has solved the above-mentioned problems, and an object of the present invention is to provide a printed circuit board housing that requires less screwing work by reducing the number of parts.

[0004]

According to the present invention which achieves such an object, a case 10 having a bottom plate 11, a back plate 12 and side plate portions 13 provided on the left and right sides, and a ceiling surface 31 attached to the case are provided. Cover 30 having front surface 32
In a printed circuit board housing having a printed circuit board, the printed circuit board 20 is held in parallel with the back plate of the case by the punching part 19 provided in the side plate part, and the side plate part provided in the cover is substantially It is characterized in that it is provided with a side surface facing portion 33 provided in an overlapping state and a board contact portion 34 provided at a position where the side surface facing portion substantially contacts the printed circuit board.

[0005]

The printed circuit board is mounted in parallel with the back plate by the embossing section. Then, when the cover is attached to the case, the board contact portion contacts the printed board to regulate the printed board. The side facing part increases the rigidity of the cover,
The positioning of the board contact part is ensured.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. Figure 1
FIG. 3 is a main part configuration diagram showing an embodiment of the present invention, in which a part of the side plate portion 13 is broken. Incidentally, in FIG. 1, components having the same functions as those in FIG.
In the figure, the front bent portion 17 is formed by bending the edge of the bottom plate 11 to the front side 32, and is provided with a screw hole. The ceiling surface claw portion 18 connects the edge of the back plate 18 to the ceiling surface 31.
It is bent in the direction and has a convex projection. The embossed portion 19 is formed corresponding to the mounting position of the printed board 20 on the side plate portion 13.
The posture is regulated when mounting from the direction of the ceiling surface 31.

The side facing portion 33 is a ceiling surface 31 of the cover 30.
The edge of the is bent in the direction of the side plate portion 13 and is in a posture of generally overlapping the side plate portion 13. The board contact portion 34 is formed by cutting out a rear side edge of the side surface facing portion 33 by an amount corresponding to a mounting position of the printed board 20, and thereby contacts the side board portion 13 side edge of the printed board 20. Locking part 3
Reference numeral 5 shows a ceiling surface 31 bent at the edge of the rear surface plate 12 and provided with an opening for engaging with the ceiling surface claw portion 18.

The assembling work is performed as follows in the apparatus constructed as described above. First, the printed circuit board 20 is guided by the embossing section 19 and attached in parallel to the back plate 12. Next, in order to attach the cover 30 to the case 10, the locking portion 35 is engaged with the ceiling surface claw portion 18 and screwed in the horizontal direction H, and the front surface 32 and the front bent portion 32 are attached.
And conclude. At this time, the side plate portion 13 and the side facing portion 33 overlap each other in a nested manner, and the board contact portion 34 contacts the printed board 20 to regulate the printed board 20. To securely fix the printed circuit board 20, the back plate 1
Although it is better to fix the screws to the 2 by means of screws or the like, the number of screws can be smaller than the conventional one.

2A and 2B are overall views of a housing to which the present invention is applied. FIG. 2A is a plan view, FIG. 2B is a rear view, and FIG. 2C is a side view. The bottom plate 11 and the printed circuit board 20 are exposed. Here, the connector 50 and the terminal block 40 are provided on the back plate 12. Vents are formed in the bottom plate 11 and the ceiling surface 31, so that heat generated inside can be easily discharged to the outside. A signal line can be accommodated in the empty area inside the housing, or another printed circuit board can be added.

[0010]

As described above, according to the present invention, when the printed circuit board 20 is accommodated in the case 10, the ejection portion 19 guides the insertion / removal, and the board contact portion 3 of the cover 30.
Since the printed circuit board 20 is regulated by 4, there is an effect that the screwing work in the assembling work can be reduced and the work becomes easy.

[Brief description of drawings]

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

FIG. 2 is an overall view of a housing to which the present invention is applied.

FIG. 3 is a configuration perspective view of a conventional device.

[Explanation of symbols]

 10 case 20 printed circuit board 30 cover

Claims (1)

[Claims] 1. A case (10) having a bottom plate (11), a back plate (12), and side plate parts (13) provided on the left and right.
And a cover (30) having a ceiling surface (31) attached to the case and a cover (30) having a front surface (32), wherein a punching-out portion (19) provided in the side plate portion allows Printed circuit board (2
0), a side facing portion (33) provided on the cover so as to substantially overlap with the side plate portion, and a substrate contacting portion provided at a position where the side surface facing portion substantially contacts the printed circuit board. A printed circuit board housing, comprising: a part (34).