Cavity positive pressure inflation structure

Abstract

The utility model discloses a cavity positive pressure inflation structure which comprises a closed cavity. The one-way inflation inlet is formed in one end of the closed cavity, and inert gas is inflated into the closed cavity through the one-way inflation inlet; the deflation opening is formed in the end, away from the one-way inflation opening, of the closed cavity, and the deflation opening can be opened or closed. The cavity positive-pressure inflation structure is convenient to assemble and inflate, the purity of inert gas in the cavity is high, and the inert gas consumption in the inflation process is low by arranging the one-way inflation opening.

Description

Technical Field

[0001] The utility model relates to the technical field of cavity packaging, in particular to a cavity positive pressure inflation structure. Background Art

[0002] Inert gas chamber packaging technology is commonly used in the packaging of inert gas-cooled cameras and inert gas lens barrels. Camera detector chips can better perform their detection capabilities in low-temperature vacuum environments. Therefore, to prevent fogging in sealed cavities such as cameras and lens barrels, the cavity must be filled with inert gas.

[0003] There are two common methods for packaging inert gas chambers: inflation and inert gas environment assembly. The inflation method typically involves creating an inlet port within the chamber, inserting a small tube to inflate the chamber, removing the tube once full, and sealing the port with a sealing pin. This method suffers from difficulties ensuring the purity of the inert gas. The inert gas environment assembly method typically involves placing the chamber in a glove box and then filling it with inert gas before packaging. This method also suffers from high inert gas consumption and inconvenient assembly.

[0004] Based on the above technical problems, technicians in this field urgently need to develop a cavity positive pressure inflation structure that is easy to assemble, has high purity of inert gas in the cavity, and consumes less inert gas during the inflation process. Utility Model Content

[0005] The utility model aims to provide a cavity positive pressure inflation structure which is convenient to assemble, has high purity of inert gas in the cavity and consumes little inert gas during the inflation process.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] The utility model provides a cavity positive pressure inflation structure, which includes:

[0008] Sealed cavity; and

[0009] a one-way air filling port provided at one end of the sealed cavity, through which inert gas is filled into the sealed cavity;

[0010] An air release port is provided at one end of the sealed cavity away from the one-way inflation port, and the air release port can be opened or closed.

[0011] Furthermore, a sealing rubber ring is provided at the opening of the one-way inflation port, and the one-way inflation port includes a piston air core; and

[0012] A locking nut for locking the piston gas core;

[0013] A threaded shell is provided on the outside of the piston gas core, and the threaded shell is used to connect to the gas source air pipe.

[0014] Furthermore, the vent is formed by a threaded through hole and a sealing screw, and a sealing rubber ring is provided at the opening of the vent.

[0015] In the above technical solution, the utility model provides a cavity positive pressure inflation structure, which has the following beneficial effects:

[0016] The utility model provides a cavity positive pressure inflation structure with convenient assembly and inflation, the purity of the inert gas in the cavity is high, and the one-way inflation port is provided so that the inert gas consumption during the inflation process is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of a cavity positive pressure inflation structure provided in an embodiment of the present invention.

[0019] Description of reference numerals:

[0020] 1. Sealed cavity; 2. One-way inflation port; 3. Deflation port;

[0021] 201. Piston gas core; 202. Locking nut; 203. Threaded housing. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] See also Figure 1 As shown;

[0024] The utility model provides a cavity positive pressure inflation structure, which includes:

[0025] A sealed cavity 1; and

[0026] A one-way air filling port 2 is provided at one end of the sealed cavity 1, and an inert gas is filled into the sealed cavity 1 through the one-way air filling port 2;

[0027] An air release port 3 is provided at one end of the sealed cavity 1 away from the one-way inflation port 2 , and the air release port 3 can be opened or closed.

[0028] As a further introduction to this embodiment, a sealing rubber ring is provided at the opening of the one-way inflation port 2, and the one-way inflation port 2 includes a piston air core 201; and

[0029] A locking nut 202 for locking the piston gas core 201;

[0030] A threaded housing 203 is provided on the outside of the piston gas core 201, and the threaded housing 203 is used to connect the gas source gas pipe. When inflating, the gas source gas pipe is connected to the threaded housing 203. Since the gas source pressure is greater than that inside the sealed cavity 1, the piston gas core 201 slides toward the inside of the sealed cavity 1. The one-way inflation port 2 is a passage. When the pressure inside the sealed cavity 1 is the same as the gas source pressure, inflation is completed. At this time, the gas pipe is unplugged. Since the pressure inside the sealed cavity 1 is greater than that outside, the piston gas core 201 slides toward the outside. At this time, the piston gas core 201 contacts the inside of the sealing rubber ring, and the threaded housing 203 contacts the outside of the sealing rubber ring. At this time, the locking nut 202 is tightened to make the sealing rubber ring more sealing and realize the positive pressure sealing of the cavity.

[0031] As a further introduction to this embodiment, the vent 3 is formed by a threaded through-hole fitted with a sealing screw, and a sealing rubber ring is provided at the opening of the vent 3. In actual use, when the one-way inflation port 2 is inflated, the vent 3 must be opened to allow the original gas in the sealed chamber 1 to escape. When the sealed chamber 1 is filled with inert gas, the sealing screw is tightened, squeezing the sealing rubber ring against the vent 3 to achieve a seal. The sealed chamber 1 is a sealed chamber capable of withstanding positive pressure.

[0032] In the above technical solution, the utility model provides a cavity positive pressure inflation structure, which has the following beneficial effects:

[0033] The utility model provides a cavity positive pressure inflation structure with convenient assembly and inflation, the purity of the inert gas in the cavity is high, and the one-way inflation port is provided so that the inert gas consumption during the inflation process is small.

[0034] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cavity positive pressure inflation structure, characterized in that: The inflatable structure comprises: A sealed cavity (1); and A one-way air filling port (2) is provided at one end of the sealed cavity (1), and an inert gas is filled into the sealed cavity (1) through the one-way air filling port (2); An air release port (3) is provided at one end of the sealed cavity (1) away from the one-way inflation port (2), and the air release port (3) can be opened or closed.

2. A cavity positive pressure inflation structure according to claim 1, characterized in that: A sealing rubber ring is provided at the opening of the one-way inflation port (2), and the one-way inflation port (2) includes a piston air core (201); and A locking nut (202) for locking the piston gas core (201); A threaded outer shell (203) is provided on the outside of the piston gas core (201), and the threaded outer shell (203) is used for connecting to an air source air pipe.

3. A cavity positive pressure inflation structure according to claim 1, characterized in that: The vent (3) is formed by a threaded through hole and a sealing screw, and a sealing rubber ring is provided at the opening of the vent (3).

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