JP2589308Y2 - Converter storage container - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a converter storage container in which moisture cannot enter the storage container but air can enter and exit.

[0002]

2. Description of the Related Art Converters used in communication and broadcasting (reception) equipment for handling microwaves, such as satellite communication and satellite broadcasting, use waveguides and microstrip lines as circuit elements, and are electrically operated by condensation of moisture. The characteristics are easy to change. Therefore, the storage container in which the circuit element of the converter is incorporated or stored is configured in an airtight structure.

[0003]

The conventional container for storing a converter having an airtight structure needs to have a strength enough to oppose a pressure change due to expansion and contraction of the internal air due to a change in temperature. is there. For this reason, the wall of the storage container is thick, and a large number of ribs and the like as reinforcing members are required.
Therefore, there is a problem that the size is large and the weight is large.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a converter storage container in which moisture cannot enter the storage container but air can enter and exit.

[0005]

In order to achieve the above object, a container for a converter according to the present invention is a container in which a circuit element of a converter is incorporated or housed. The joining surfaces are joined in an airtight manner via packing, and the input / output terminals derived from the storage container are fixed in an airtight state via an O-ring, and an air hole is formed in the wall of the storage container, The air holes are closed by a gas permeable membrane having a number of holes smaller in diameter than water molecules and larger in diameter than air molecules.

A ventilation cover is provided to cover the gas permeable membrane for closing the air hole. An air chamber is formed in the gas permeable membrane on the side of the gas permeable membrane, and a small-diameter communication hole communicates the air chamber with the outside. May be formed.

[0007]

[Operation] An air hole is formed in the wall of the storage container, and the air hole is closed with a gas permeable membrane. This gas permeable membrane prevents moisture from entering the storage container. Becomes possible. Therefore, the pressure change due to the expansion and contraction of the air inside the storage container due to the temperature change is reduced by the air passing through the gas permeable membrane, and no excessive force acts on the storage container.

The gas permeable membrane can be protected from external force by covering the gas permeable membrane with a ventilation cover having an air chamber and a communication hole.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a longitudinal sectional view of one embodiment of the converter storage container of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a side view of FIG. 1, and FIG. FIG. 2 is an enlarged longitudinal sectional view of a main part of a gas permeable membrane and a ventilation cover in FIG. 1.

1 to 4, a circuit element of a converter such as a microstrip line 12 is incorporated or housed in a metal container constituting member 10. Although this container constituent member 10 is closed with a metal lid 14,
A circumferential groove 18 is formed in the joint surface 16, a packing 20 is inserted, and the container constituent member 10 and the lid 14 are joined in an airtight manner by screws 22, 22. A container for storage is formed by the container constituent member 10 and the lid 14. Then, a probe 24 as an input / output terminal of the converter penetrates and protrudes from a hole formed in the wall of the container constituting member 10. The probe 24 is covered with a resin cap 26 in an airtight state. An O-ring 28 is interposed between the hole and the hole to form an airtight state.
Further, an O-ring 32 is interposed on the outer periphery of the connector 30 disposed through the hole formed in the container constituent member 10 to form an airtight state. Further, the container component 10
An air hole 34 is drilled in the wall so that the inside and the outside communicate with each other. The outer opening of the air hole 34 is closed by a gas permeable film 36 having a large number of holes smaller in diameter than water molecules and larger than air molecules.
6 is covered with a ventilation cover 38. In the ventilation cover 38, an air chamber 40 is formed on the gas permeable membrane 36 side by a curved surface that is convex outward, and the outside and the air chamber 40 are formed at the center thereof.
One small diameter communication hole (for example, 0.8 mmφ)
42 are drilled.

In such a configuration, air can enter and exit through the gas permeable membrane 36 in response to expansion and contraction of air in the storage container due to a change in temperature. Therefore, the pressure change due to the expansion and contraction of the air acting on the container is reduced, and the storage container does not require any strength as compared with a conventional container of this type. For this reason, the wall of the storage container can be made thinner and ribs and the like are not required, so that a small and lightweight converter storage container can be configured. Moreover, the gas permeable membrane 36
As a result, the intrusion of moisture into the storage container is prevented, and there is no risk of dew condensation occurring inside.

Since the gas permeable membrane 36 is covered with the ventilation cover 38, the gas permeable membrane 36 is not damaged by external force. Here, a large area of the gas permeable film 36 communicates with the outside air through the small diameter communication hole 42 via the air chamber 40, and the gas permeable film 36 works efficiently.

The gas permeable membrane 36 used in the present invention is:
As an example, a polyester woven fabric bonded product is subjected to a water repellent treatment, but it is easily understood that any structure may be used as long as it allows air to pass therethrough and blocks the passage of water. Will be done. In addition, container constituent member 1
The probe 24 protruding from the hole No. 0 is
It is sufficient that an airtight state is formed with respect to 0, and it is not necessary that the cap 26 be completely covered as in the embodiment.

[0014]

[Effects of the Invention] As described above, since the converter storage container of the present invention is constituted, the following special effects can be obtained.

In the container for storing a converter according to the first aspect, since air can enter and exit the container for storage, a pressure change due to expansion and contraction of air inside the container with a change in temperature. No large force acts on the storage container, the strength of the storage container can be smaller than that of the conventional type, and the thickness of the wall of the storage container can be reduced accordingly. It is suitable for reduction in size and weight. In addition, since intrusion of moisture is prevented, there is no risk of dew condensation inside, and the electrical characteristics are stable.

The converter housing container according to the second aspect is practically useful because the gas permeable membrane is not damaged by external force.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of a converter storage container according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a side view of FIG. 1;

FIG. 4 is an enlarged longitudinal sectional view of a main part of a gas permeable membrane and a ventilation cover in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Container constituent member 14 Lid 16 Joint surface 18 Groove 20 Packing 24 Probe 28, 32 O-ring 30 Connector 34 Air hole 36 Gas permeable membrane 38 Ventilation cover 40 Air chamber 42 Communication hole

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H05K 5/06 H03D 9/00

Claims (2)

(57) [Scope of request for utility model registration] An accommodating container in which a circuit element of a converter is incorporated or accommodated, wherein the connecting surfaces of the container components are joined in a gas-tight manner via a packing, and are drawn out from the accommodating container. A gas having an output terminal fixed in an air-tight manner via an O-ring, an air hole formed in the wall of the storage container, and a large number of holes having a diameter smaller than water molecules and larger than air molecules. A container for accommodating a converter, which is closed by a permeable membrane. 2. The converter accommodating container according to claim 1, further comprising: a ventilation cover that covers a gas permeable membrane that closes the air hole, wherein the ventilation cover has an air chamber formed on the gas permeable membrane side. A converter storage container having a small-diameter communication hole communicating between a chamber and the outside.