A watch case with double sealing function and a gas density relay for high altitude

Abstract

The utility model belongs to the technical field of gas density relay, especially relate to a watchcase with double sealing function and a gas density relay for high altitude. Including base, integral type gasket, the base is docked with integral type gasket, and the integral type gasket is arranged with first sealing element between base, cover, the cover is covered in integral type gasket, and the cover is arranged with second sealing element between integral type gasket, simultaneously through the welding sealing connection between cover and base, make first sealing element and second sealing element carry out compression sealing. The utility model reduces the risk of leakage by arranging double sealing structure to strengthen sealing performance.

Description

Technical Field

[0001] This utility model belongs to the field of gas density relay technology, and specifically relates to a casing with dual sealing function and a gas density relay for high altitudes. Background Technology

[0002] Currently, most density relays consist of a housing, sealing ring, bushing, and dial gauge. Since these components are installed independently, the sealing structure inside the dial gauge cavity is formed only by the sealing surface between the bushing and the base. When used in high-altitude environments, the atmospheric pressure is low, the pressure difference between the inside and outside of the density relay increases, and leaks are likely to occur at weak points in the seal. Utility Model Content

[0003] The purpose of this invention is to provide a watch case with a double sealing function and a gas density relay for high altitudes. This invention enhances the sealing performance by arranging a double sealing structure to reduce the risk of leakage.

[0004] To solve the above-mentioned technical problems, this utility model provides a watch case with a dual sealing function, comprising:

[0005] Base;

[0006] An integral bushing is provided, wherein the integral bushing is mated to the base, and a first sealing element is provided between the integral bushing and the base;

[0007] The cover is placed on the integral bushing, and a second sealing element is provided between the cover and the integral bushing; at the same time, the cover and the base are welded and sealed together, so that the first sealing element and the second sealing element are pressed and sealed.

[0008] Preferably, the base and the cover are made of stainless steel.

[0009] Preferably, the integrated bushing is made of translucent plastic.

[0010] Preferably, the first sealing element is an O-ring, and the second sealing element is a sealing washer.

[0011] Preferably, the welding sealing method between the cover and the base is laser welding sealing.

[0012] Preferably, the base and the cover each further include a detection port, and an air-sealing screw is sealed and inserted into the detection port, and the air-sealing screw further includes a sealing washer.

[0013] This invention also provides a gas density relay for high altitudes, comprising a case, pointer, dial, and movement assembly with a dual-sealing function as described above.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] This invention forms a first sealing structure by arranging a first sealing element between an integrated bushing and a base, and a second sealing structure by arranging a second sealing element between the housing and the integrated bushing, as well as a laser weld between the housing and the base, thus forming a double sealing structure. This reduces the risk of leakage of the compensation gas filled inside the housing due to the pressure difference between the inside and outside in high-altitude environments, and greatly improves the reliability and service life of the density relay when used in high-altitude environments. Attached Figure Description

[0016] Figure 1 This is a structural diagram of a watch case with a dual sealing function according to this utility model.

[0017] Figure 2 This is a structural diagram of the gas density relay for high altitude applications of this utility model.

[0018] Figure 3 This is a cross-sectional view of the structure of the gas density relay for high altitudes according to this utility model.

[0019] In the diagram: 1-Case, 101-Base, 102-Integrated bushing, 103-Cover, 104-First seal, 105-Second seal, 106-Gas seal screw, 2-Hand, 3-Dial, 4-Movement assembly. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0021] like Figures 1-3 As shown, this utility model embodiment specifically provides a watch case with a dual sealing function, including:

[0022] Base 101;

[0023] An integral bushing 102 is attached to a base 101, and a first sealing element 104 is provided between the integral bushing 102 and the base 101. As further explained, the connection end faces of the integral bushing 102 and the base 101 are both flat to enhance the airtightness between them and the first sealing element 104. The first sealing element 104 is also provided with an L-shaped corner to cover the end face of the integral bushing 102.

[0024] A housing 103 is fitted over an integral bushing 102, and a second sealing element 105 is disposed between the housing 103 and the integral bushing 102. Simultaneously, the housing 103 is welded to the base 101, forming a laser weld, which compresses and seals the first sealing element 104 and the second sealing element 105. Further, the housing 103, the integral bushing 102, and the base 101 form a sealing cavity structure. The sealing point of this cavity structure is located at the junction of the first sealing element 104, the second sealing element 105, and the laser weld. A detection port is provided on the housing 103 of this sealing cavity structure to allow for airtightness testing of the sealing cavity during processing to check for leaks.

[0025] The base 101 and the cover 103 are made of stainless steel to enhance corrosion resistance and structural strength.

[0026] The integrated bushing 102 is made of light-transmitting plastic, which facilitates the observation of the pointer 2 through the observation port of the cover 103 for reading.

[0027] The first sealing element 104 is an O-ring, and the second sealing element 105 is a sealing washer.

[0028] The welding sealing method between the cover 103 and the base 101 is laser welding sealing.

[0029] The base 101 and the housing 103 each include a detection port, with a gas-sealing screw 106 sealed to the detection port, and a sealing washer fitted onto the gas-sealing screw 106. The detection port on the base 101 is provided to detect whether the compensation gas filling the housing 1 is leaking.

[0030] The dual sealing function achieved by this utility model is that a first sealing structure is formed by a first sealing element 104 arranged between the integrated bushing 102 and the base 101, and a second sealing structure is formed by a second sealing element 105 arranged between the cover 103 and the integrated bushing 102, and the laser weld between the cover 103 and the base 101. This dual sealing structure reduces the risk of leakage of the compensation gas filled in the case 1 due to the pressure difference between the inside and outside in high-altitude environments.

[0031] This utility model also provides a gas density relay for high altitudes, including a watch case 1 with a double sealing function as described above, a pointer 2, a dial 3 and a movement assembly 4, wherein the pointer 2, the dial 3 and the movement assembly 4 are all installed inside the watch case 1.

[0032] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A watch case with a dual sealing function, characterized in that, include: Base (101); An integral bushing (102) is provided on the base (101), and a first sealing element (104) is provided between the integral bushing (102) and the base (101). A cover (103) is provided on the integral bushing (102), and a second sealing element (105) is provided between the cover (103) and the integral bushing (102); at the same time, the cover (103) and the base (101) are welded and sealed together, so that the first sealing element (104) and the second sealing element (105) are pressed and sealed.

2. The watch case with dual sealing function as described in claim 1, characterized in that, The base (101) and the cover (103) are made of stainless steel.

3. A watch case with a dual sealing function as described in claim 1, characterized in that, The integrated bushing (102) is made of translucent plastic.

4. A watch case with a dual sealing function as described in claim 1, characterized in that, The first sealing element (104) is an O-ring, and the second sealing element (105) is a sealing washer.

5. A watch case with a dual sealing function as described in claim 1, characterized in that, The welding sealing method between the cover (103) and the base (101) is laser welding sealing.

6. A watch case with a dual sealing function as described in claim 1, characterized in that, The base (101) and the cover (103) are respectively provided with detection ports, and the detection ports are sealed with gas-sealing screws (106), and the gas-sealing screws (106) are also provided with sealing gaskets.

7. A gas density relay for high altitudes, characterized in that, The watch includes a case (1) with a double sealing function as described in any one of claims 1 to 6, a hand (2), a dial (3), and a movement assembly (4).

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