JPH0621668A - Electronic device housing - Google Patents

Abstract

PURPOSE:To acquire a housing which is suitable for improvement of assembly workability and production of a wide variety of products in small quantities by holding a shelf part and an attaching leg of an upper case by an operating panel and a printed board. CONSTITUTION:A shelf part 15 and an attaching rib 16 are provided to an inner surface of an upper case 14 whose upper part and lower part are opened. An operating panel 11 with an attaching leg 13 is mounted on the shelf part 15 and a printed board 17 is fixed to the attaching leg 13 of the operating panel 11 by a screw 21 in contact with a lower surface of the attaching rib 16 of the upper case 14. Thereby, the shelf part 15 and the attaching rib 16 of the upper case 14 are held and fixed by the operating panel 11 and the printed board 17. Assembly workability is thereby improved in comparison with a structure wherein a lower case is fixed to an upper case after a printed board is fixed to a lower case and automation by a robot is possible. When an upper case is the same and an operating panel is different, the exchange of an operating panel is just required. Therefore, costs for design and a die can be reduced and a wide variety of products can be manufactured in small quantities at a low cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic equipment casing having an operation panel on its upper surface.

[0002]

2. Description of the Related Art In video equipment, audio equipment, VTR equipment and the like in broadcasting stations and productions, a remote control device is provided so that a main body device can be remotely controlled.
In the remote control device, a printed circuit board in which an electronic circuit is incorporated is arranged inside the housing, and an operation panel for operating knobs and switches is arranged on the upper surface of the housing.

FIG. 3 is an exploded perspective view showing an example of a housing of such a remote control device. In FIG. 3, reference numeral 1 is an upper case, and an operation panel 2 is integrally formed on the upper surface thereof. Reference numerals 3a and 3b are display sheets attached to the operation panel unit 2, and reference numeral 4 is a printed board on which electronic components are mounted. Reference numerals 5a and 5b are lower cases that cover the lower part of the upper case 1.

FIG. 4 is a partial cross-sectional view of the above-mentioned housing, and 6 is a variable resistor mounted on the printed circuit board 4, the shaft of which is projected from the mounting holes of the operation panel 2 and the display sheet 3a and pinched there. 7 is fixed. Reference numeral 8 denotes a mounting leg that is erected on the lower case 5a, and the printed circuit board 4 is fixed to the mounting leg 8 with a screw 10a. Reference numeral 9 denotes a mounting leg that is erected on the upper case 1, and the lower case 5a has a screw 10b on the mounting leg 9.
Fixed by.

As described above, even in the above-mentioned conventional case, the operation panel 2 is arranged on the upper surface of the upper case 1 so that the knob 7 and the like can be easily operated.

[0006]

However, in the above-mentioned conventional case, the printed circuit board 4 must be fixed to the lower case 5a by the screw 10a, and then the lower case 5a must be fixed to the upper case 1 by the screw 10b. There was a problem that assembly workability was poor. Also, the upper case 1
And the operation panel 2 are integrally formed, so if the model has the same outer shape of the housing but only the operation panel is different, the entire upper case must be replaced and high-mix low-volume production is required. Had a problem that the production cost would rise.

An object of the present invention is to solve such a conventional problem, and to provide an electronic equipment housing which has good assembly workability and is suitable for high-mix low-volume production.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has an upper part and a lower part which are open and have a ledge part around the upper part of the inner surface thereof and a mounting rib directed downward on the same side surface. A case, an operation panel that is placed on the shelf so as to cover the upper opening of the upper case and has mounting legs that face downward, and a lower case that is attached to the upper case so as to cover the lower opening of the upper case. And a printed circuit board on which electronic components are mounted is brought into contact with the lower surface of the mounting rib of the upper case and fixed to the mounting leg of the operation panel, so that the shelf and the mounting leg of the upper case are connected to the operation panel and the printed circuit board. It is designed to be sandwiched between and.

[0009]

According to the present invention, since the printed circuit board is attached to the upper case and the operation panel at the same time, and the lower case is attached to the upper case, the assembling workability is improved and only the operation panel can be replaced. Therefore, high-mix low-volume production can be realized at low cost.

[0010]

1 is a partial sectional view showing the structure of an embodiment of the present invention, and FIG. 2 is a schematic perspective view thereof. 1 and 2, reference numeral 11 denotes an operation panel, a display sheet 12 is attached to the upper surface of the operation panel, and mounting legs 13 are integrally formed on the lower surface thereof. Reference numeral 14 denotes an upper case, which is formed in a frame shape with its upper and lower parts opened, and has a shelf portion 15 around the upper portion of its inner side surface and a mounting rib 16 directed downward on the same side surface. The distance L1 from the upper surface of the shelf 15 to the lower surface of the mounting rib 16 is slightly larger than the length L2 of the mounting leg 13 of the operation panel 11. 17 is a printed circuit board, and 18 is a printed circuit board 1.
7 is a variable resistor, and 19 is a variable resistor 1
The knob is fixed to the shaft of No. 8. A lower case 20 covers the lower opening of the upper case 14.

Next, the assembly sequence in the above embodiment will be described. First, the operation panel 11 to which the surface sheet 12 is attached is placed on the shelf 15 of the upper case 14, and then the printed circuit board 17 on which electronic parts such as the variable resistor 18 are mounted.
Is attached to the lower surface of the mounting rib 16 of the upper case 14 and the screw 21 is screwed into the mounting leg 13 of the operation panel 11, so that the mounting rib 16 is mounted from the upper surface of the shelf portion 15.
L1 to the lower surface of and the mounting leg 1 of the operation panel 11
Due to the difference with the length L2 of 3, the shelf 15 of the upper case 14
The mounting rib 16 and the mounting rib 16 are sandwiched and fixed between the operation panel 11 and the printed circuit board 17. Next, the lower case 20 is fixed to the upper case 14 with the screw 22, and finally the knob 19 or the like is attached to the shaft or the like of the variable resistor 18.

As described above, according to the above embodiment, since the printed circuit board 17 is attached to the upper case 14 and the operation panel 11 at the same time with the screws 21, the lower case 20 is attached to the upper case 14 with the screws 22. There is an advantage that workability is improved. Further, when the operation panel 11 of another type is used, the same upper case 14 and lower case 20 can be used as they are, so that high-mix low-volume production can be realized at low cost.

[0013]

As is apparent from the above embodiment, the present invention provides an operation panel having a shelf and mounting ribs on the inner surface of an upper case with the upper and lower parts open, and the shelf having mounting legs. By mounting and fixing the printed circuit board to the mounting legs of the operation panel while abutting the lower surface of the mounting rib of the upper case, the shelf and the mounting rib of the upper case are sandwiched between the operation panel and the printed circuit board. As a result, the assembly workability is improved compared to the conventional structure, and automation by a robot becomes possible. Also, because the operation panel and upper case are formed separately, it is possible to replace only the operation panel, reducing design costs and mold costs, and realizing low-cost, high-mix, low-volume production. it can.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of an electronic device housing showing an embodiment of the present invention.

FIG. 2 is a schematic exploded perspective view of the same housing.

FIG. 3 is a schematic exploded perspective view of a conventional electronic device housing.

FIG. 4 is a partial cross-sectional view of the same housing.

[Explanation of symbols]

 11 Operation Panel 12 Display Sheet 13 Mounting Leg 14 Upper Case 15 Shelf 16 Mounting Rib 17 Printed Circuit Board 18 Variable Resistor 19 Pick 20 Lower Case 21, 22 Screw

Claims (1)

[Claims] 1. An upper case having an upper portion and a lower portion opened, a shelf portion around an upper portion of an inner side surface thereof, and a mounting rib extending downward on the same side surface, and the shelf portion so as to cover an upper opening of the upper case. And a lower case attached to the upper case so as to cover a lower opening of the upper case, and a printed circuit board on which electronic components are mounted. An electronic device characterized in that the shelf of the upper case and the mounting rib are sandwiched between the operating panel and the printed circuit board by abutting against the lower surface of the mounting rib of the case and fixing to the mounting leg of the operation panel. Equipment housing.