JPS59159B2 - airtight container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle airtight container, and more particularly to a vehicle airtight container suitable for a vehicle semiconductor device.

FIG. 1 shows the relationship between a sealing pipe and a protection pipe of a conventional vehicle-mounted airtight container. A cooling device that is installed under the floor of an electric car or vehicle, uses a liquid 4 such as fluorocarbon sealed in a container 3 as a refrigerant, and uses the boiling and condensing effects of the liquid 4 to cool a heating element stored in the container 3. If air is mixed in the container 3 of the cooling device, the cooling performance will be drastically reduced, so it is necessary to make the container 3 a vacuum.

Therefore, the container 3 after filling the liquid 4 must have a completely sealed structure. However, if the pipe for enclosing the liquid 4 and the part for evacuating the inside of the container 3 are not placed in the same place, there is a risk that air may enter the inside of the container 3. For this reason,
A liquid sealing pipe is used as it is as a sealing pipe 1, and at the same time as being cut under pressure, it is joined under pressure so that air does not enter into the container 3. The sealed tube 1 is installed directly above or below the container 3 because it is also used for cleaning the inside of the container 3 and discharging the liquid 4. Furthermore, since the sealed tube 1 is supported by the container 3 in a cantilevered manner, the structure is weak against vibrations when the vehicle is running.

In addition, this sealed tube 1 usually has a capacity of 200 to 300 wl, so that the inside of the container 3 can be evacuated several times.
It has a length of about m, and the press-contacted part of the sealing cut is a small part about 0.2 degrees from the tip of the sealing cut, as shown in FIG.

Since the sealing part maintains the airtightness inside the container 3 with such a minute joint part, it can be used to protect the press-welded joint part.
By fixing the protective pipe 2 to the container 3, the outside of the sealed tube 1 is covered over its entire length, and the sealed portion is protected from vibrations and shocks from outside the device.

However, with such a protection method, there is a risk that the pressure-welded joint and the protective pipe 2 come into contact with each other due to vibrations or other shocks when the vehicle is running, and that the pressure-welded joint is damaged, so that it is not a complete protection method. SUMMARY OF THE INVENTION An object of the present invention is to provide an airtight container for use in a vehicle that can prevent damage to the sealing section at the tip of the sealing tube and improve the reliability of the container.

In order to achieve the above object, the present invention interposes a spacer between the sealed pipe and the protection pipe to maintain the distance between the two, and the spacer is placed on the side of the sealed pipe of the sealed pipe. It was placed close to it.

An embodiment of the present invention will be described below with reference to FIG.

Incidentally, the same reference numerals as in the prior art (FIGS. 1 and 2) indicate the same parts, and therefore, a repeated explanation will be omitted. However, in this embodiment, a spacer is provided near the sealed section of the sealed tube 1 so that a constant distance can always be maintained between the pressure joint formed at the tip of the sealed tube 1 and the inner surface of the protective pipe 2. A certain rubber pipe 5 is installed so that the distance between the two is almost constant, so that even if vibrations or other shocks are applied from outside the device when the vehicle is running, the press-welded joint of the sealing section is located on the outside. This prevents it from coming into contact with the protection pipe 2. Therefore, damage to the pressure welding joint due to contact between the sealing pipe and the protection pipe is eliminated, and therefore,
The airtightness inside the container 3 will be maintained for a long period of time.

According to the present invention, since the spacing body is positioned closer to the sealing section of the sealing tube and the distance between the sealing tube and the protection pipe is constant, it is possible to prevent damage to the pressure welded joint of the sealing tube. Therefore, it is possible to maintain airtightness inside the container and improve reliability.

[Brief explanation of drawings]

FIG. 1 is a detailed cross-sectional view of a vehicle-mounted airtight container according to the prior art, FIG. 2 is a cross-sectional view of FIG. It is a diagram. 1... Seal tube, 2... Protective pipe, 3... Container, 4... Liquid, 5...
...Rubber pipe.

Claims (1)

[Scope of Claims] 1. A container that is supported by a vehicle body and seals a liquid inside, a sealed tube that communicates with the container at one end and has a sealed section at the other end, and a sealed tube that covers the sealed tube and is supported by the container. In the airtight container, a spacer is interposed between the sealed tube and the protective pipe to maintain a distance between them, and the spacer is used to seal the sealed tube. An airtight container for use in a vehicle, characterized by being located closer to the side of the vehicle. 2. The vehicle airtight container according to claim 1, wherein the spacer is made of an elastic material. 3. The vehicle-mounted airtight container according to claim 1, wherein the spacer is an annular rubber.