JPH07254796A - Circuit unit housing device - Google Patents

Abstract

PURPOSE:To form a circuit unit housing device into a simple constitution and to miniaturize and lighten the device by a method wherein screwing members are inserted into the first to third mounting holes and a cover body and second and first shielding cases are attached to a mounting body by the screwing member. CONSTITUTION:A first shielding case 10 provided with a recessed unit housing part 10a is installed on a mounting body 11. A second shielding case 12 is stacked on the part 10a. Mounting holes 12c are formed in a unit housing part 12a of the case 12 in such a way as to correspond to mounting holes 10c formed in the case 10. Moreover, a cover body 13 is mounted on the part 12a of the case 12, mounting holes 13b formed in the cover body 13 are formed at prescribed intervals in such a way as to correspond to the mounting holes 10c and 12c formed in the cases 10 and 12 and the cover body 13 and the cases 10 and 12 are fixedly installed on the body 11 in a stacked form via screw members 14. Accordingly, a circuit unit housing device can be simplifieid, miniaturized and lightened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit unit accommodating apparatus suitable for incorporating a circuit unit of electronic equipment mounted on a spacecraft such as an artificial satellite or a flying vehicle such as an aircraft.

[0002]

2. Description of the Related Art Generally, in this type of circuit unit accommodating device, circuit units each having an electronic circuit formed on a substrate are classified by function and are not shown as shown in FIGS. 3 (a) and 3 (b). By forming shield cases 1a and 1b having a predetermined shape according to the circuit unit, the shield case 1
The circuit units are accommodated in a and 1b, respectively, and lids 2a and 2b are covered on the shield cases 1a and 1b, respectively. Then, the shield cases 1a and 1b thus covered with the lids 2a and 2b are incorporated into an electronic device body (not shown).

However, in the above-mentioned circuit unit housing device, when a desired electronic device is constructed, the number of shield cases 1a and 1b becomes large, and the installation area becomes large, so that it becomes large in size and light in weight. It is difficult to promote

[0004] Such a situation is due to an increase in the number of circuit units and an increase in the size of the electronic equipment mounted on a flying body such as a spacecraft.
It becomes a big problem.

[0005]

As described above, the conventional circuit unit accommodating device has a problem that it is large in size and heavy in weight. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a circuit unit housing device having a simple structure and capable of promoting reduction in size and weight.

[0006]

According to the present invention, there is provided a concave first unit accommodating portion for accommodating a circuit unit, and a mounting portion is provided on the back side of the first unit accommodating portion, and A first shield case in which a first mounting hole is provided corresponding to the mounting body in the mounting portion direction from the first unit housing portion, and a concave second unit housing portion in which the circuit unit is housed are provided. A fitting protrusion that is provided on the back side of the second unit accommodating portion and is fitted into the first unit accommodating portion, and the second mounting hole corresponds to the first mounting hole. A second shield case provided on the second shield case and a second unit accommodating portion of the second shield case, and the third mounting hole corresponds to the first and second mounting holes. And the first shield case attached to the mounting body. , The second shield case and the lid body are sequentially stacked, and the lid body, the second shield case, and the first shield case are inserted into the first to third attachment holes to attach the lid body to the attachment body. The circuit unit accommodating device is configured to include a screwing member that is screwed to the.

[0007]

According to the above construction, the second shield case is
After stacking on the first shield case placed on the mounting body, the lid body is covered on the second unit accommodating portion, and the first shield case and the first shield case are attached to the mounting body by using the screw member. By screwing together with the lid, these first
The shield case and the lid body are arranged in a stack. According to this, since the lid of the first shield case is also used as the second shield case, the number of components can be reduced, and the miniaturization and weight reduction can be facilitated easily.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a circuit unit housing device according to an embodiment of the present invention.
A concave unit accommodating portion 10a is formed on one surface of the first shield case. First shield case 1
An attachment portion 10b is formed on the other side of 0, and the attachment portion 10b is placed at the attachment position of the attachment body 11 such as a casing of another electronic device or the like. Also, the first shield case 1
In the unit accommodating portion 10a of 0, a plurality of mounting holes 10c
Are provided at predetermined intervals corresponding to the screw holes 11a formed in the mounting body 11.

A second shield case 12 is stacked on the unit housing portion 10a of the first shield case 10. The second shield case 12 has a concave unit accommodating portion 12a formed on one side thereof, and the other side thereof,
The convex fitting portion 12b is formed corresponding to the unit housing portion 10a of the first shield case 10. And
A mounting hole 12c is formed in the unit housing portion 12a of the second shield case 12 so as to correspond to the mounting hole 10c of the first shield case 10.

A lid 13 is mounted on the unit housing portion 12a of the second shield case 12. A convex fitting portion 13a is formed on one surface of the lid body 13 so as to correspond to the unit housing portion 12a of the second shield case 12. The lid 13 is provided with the mounting hole 13b for the first and second shield cases 10, 1.
The two mounting holes 10c and 12c are formed at predetermined intervals.

In the above structure, the unit housing portions 10a, 12a of the first and second shield cases 10, 12 are arranged.
The circuit unit (not shown) is housed in. First, the mounting portion 10b of the first shield case 10 is placed at the mounting position of the mounting body 11.

Next, the fitting portion 12b of the second shield case 12 is fitted on the unit housing portion 10a of the first shield case 10, and the second shield case 12 is fitted.
On the unit accommodating portion 12a of the
a is fitted and the lid 13 is covered. Then, a fixing screw member 14 is inserted into the mounting hole 13b of the lid body 13. The screw member 14 has a screw portion 14a at its tip.
Is formed, and the screw portion 14a is attached to the mounting hole 13 of the lid body 13.
b, the second and first shield units 12, 10 are sequentially inserted into the mounting holes 12c, 10c, and the screw portions 14a thereof are screwed into the screw holes 11a of the mounting body 11. Where the first
The shield case 10, the second shield case 12, and the lid body 13 are stacked and fixed on the mounting body 11 via the screw member 14 as shown in FIG.

As described above, in the circuit unit accommodating device, the first shield case 10 having the concave unit accommodating portion 10a is installed on the mounting body 11, and the first shield case 10 is installed.
The second shield unit 12 stacked on the unit housing portion 10a of the second shield unit 10 is provided with a convex fitting portion 12b, and the fitting portion 12b of the second shield case 12 is provided in the first shield case. 10 unit accommodating parts 1
0a, the lid 13 is put on the unit housing portion 12a of the second shield case 12, and the lid 13, the second shield case 12, and the first shield case 10 are screwed together. It is configured to be screwed to the mounting body 11 in a stacked manner by using 14. According to this, since the fitting portion 12b of the second shield case 12 also serves as the lid of the first shield case 10, the number of its components is reduced, the weight reduction is promoted, and the installation area is reduced. It is possible to reduce the size and promote small size.

In the above embodiment, the case where one second shield case 12 is used and the second shield case 12 is arranged in a stack is described, but the present invention is not limited to this, and the second shield case 1 is not limited thereto.
It is also possible to arrange the two on the first shield case 10 in a stacked manner.

Further, in the above-mentioned embodiment, the case where the present invention is applied to the electronic equipment mounted on the flying object has been described as a representative, but the present invention is not limited to this and can be applied to various electronic equipment.
A similar effect is expected. Therefore, it is needless to say that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.

[0016]

As described above in detail, according to the present invention, it is possible to provide a circuit unit accommodating device having a simple structure and capable of promoting miniaturization and weight reduction.

[Brief description of drawings]

FIG. 1 is a diagram showing a circuit unit housing device according to an embodiment of the present invention.

FIG. 2 is a view showing a mounting state of FIG.

FIG. 3 is a diagram showing a conventional circuit unit housing device.

[Explanation of symbols]

 10 ... 1st shield case. 10a ... Unit housing section. 10b ... Mounting part. 10c ... Mounting hole. 11 ... Mounting body. 11a ... Screw hole. 12 ... Second shield case. 12a ... Unit storage section. 12b ... Fitting portion 12c ... Mounting hole. 13 ... Lid. 13a ... Fitting part. 13b ... Mounting hole. 14 ... Screw member. 14a ... screw part.

Claims (2)

[Claims] 1. A concave first unit accommodating portion for accommodating a circuit unit is provided, an attaching portion is provided on a rear surface side of the first unit accommodating portion, and the concave portion is attached from the first unit accommodating portion. A first shield case in which a first mounting hole is provided in the direction of the section corresponding to the mounting body, and a concave second unit housing portion in which the circuit unit is housed are provided, and the second unit is provided. A second shield in which a fitting convex portion to be fitted into the first unit housing portion is provided on the back side of the housing portion, and a second mounting hole is provided corresponding to the first mounting hole. A case and a second unit accommodating portion of the second shield case are closed, and a third mounting hole is provided on the first and second sides.
The first to third attachments in a state in which the lid body provided corresponding to the insertion hole of the second attachment body and the first shield case, the second shield case, and the lid body are sequentially stacked on the attachment body. A circuit unit accommodating device, comprising: a screw member that is inserted into a hole to screw the lid body, the second shield case, and the first shield case to the mounting body. 2. The circuit unit storage device according to claim 1, wherein a plurality of the second shield cases are stacked and arranged.