JPH07257500A - Air-tight case - Google Patents

Abstract

PURPOSE:To boost an air pressure in a case main unit up to a necessary value, even after it is left as in a vacuum over a long period, by providing the case main unit for storing a mission equipment main unit, and sealing air for boosting the air pressure inside this case main unit. CONSTITUTION:A cylinder 1 is sealed with air for boosting up to a necessary air pressure the inside of a case main unit 2 for storing a mission equipment main unit. In the point of time starting a mission, a valve 3 is opened to release necessary air in the case main unit 2. Here is remotely controlled the valve 3 from an interface connector by a solenoidal peration or the like. In this way, even after the case main unit is left as in a vacuum over a long period, the air pressure, which is an air pressure against the mission equipment, in the case main unit 2 can be boosted up to a necessary value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airtight case, and more particularly to an airtight case in which a mission starts after being left in a vacuum for a long time in outer space or the like.

[0002]

2. Description of the Related Art A conventional airtight case is a system in which air for obtaining a necessary atmospheric pressure is enclosed in a case body having a large opening for inserting and removing a mission device body and is maintained as it is.

[0003]

In this conventional airtight case, it is necessary to maintain the airtightness only by the case body having a large opening for inserting and removing the mission equipment. There was a problem that it could not escape the leak.

[0004]

In an airtight case of the present invention, a case body for storing a mission device body, a cylinder filled with air for increasing the pressure of the case body, and a valve for opening and closing the cylinder are provided. I have it.

[0005]

The present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram of an embodiment of the present invention. In the figure, the cylinder 1 is filled with air for boosting the case body 2 to a required atmospheric pressure, and when the mission starts,
The valve 3 is opened, and necessary air is discharged to the case body 2. Here, the valve 3 is remotely operated from the interface connector 4 by an electromagnetic method or the like.

The case body 2 is initially in a vacuum state.

[0007]

As described above, according to the present invention, by separately providing the case main body for storing the mission equipment and the cylinder for enclosing the air for increasing the atmospheric pressure of the case main body to the required atmospheric pressure, it is possible to achieve a long-term operation. The result is that the pressure in the case body, which is the pressure for the mission device, can be increased to the required pressure even after being left in vacuum.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an embodiment of the present invention.

[Explanation of symbols]

 1 cylinder 2 case body 3 valve 4 interface connector

Claims (2)

[Claims] 1. An airtight case comprising a case body for housing a mission device body, and a cylinder arranged inside the case body and containing air for increasing the pressure inside the case body. 2. The airtight case according to claim 1, further comprising a valve for controlling the cylinder and an interface connector for receiving a signal for controlling the valve.