Sealing and shielding electric connector

Abstract

The invention provides a sealed shielding electric connector which is used for being arranged on an installation panel of equipment and comprises an electric connector body, and the installation panel is arranged on the electric connector body in a sleeving mode. The sealing gasket is arranged on the electric connector body in a sleeving manner and is arranged above the mounting panel; the flange plate is arranged on the electric connector body in a sleeving manner and is arranged above the sealing gasket; and the fastener is used for fixing the mounting panel, the sealing gasket and the flange plate. The electric connector has the beneficial effects that through the unique sealing gasket coating design, the electric connector has a better shielding effect on the basis of having good sealing performance; according to the electric connector, the uncoated area of the sealing gasket is reserved at the key position, so that the elasticity of the sealing gasket is maintained, the sealing effect is ensured not to be influenced, and the working reliability of the electric connector in special environments such as low air pressure or vacuum is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic equipment, and in particular relates to a sealed shielding electric connector. Background Art

[0002] In today's electrical equipment field, electromagnetic compatibility has become one of the key indicators for measuring the electrical performance of equipment. As an indispensable link between electrical equipment and external equipment, the shielding capability of electrical connectors plays a decisive role in the overall electromagnetic compatibility performance of the equipment. In actual application scenarios, especially in low-pressure or vacuum environments, electrical connectors not only need to have reliable signal and power transmission capabilities, but also must have good sealing performance to prevent gas leakage or external impurities from invading, ensuring the stability of the internal environment of the equipment.

[0003] The traditional method of achieving sealing performance is usually to place an elastic sealing gasket between the electrical connector and the equipment hole, and the common material is silicone or rubber. However, when faced with high requirements for electromagnetic shielding and sealing performance at the same time, previous solutions have obvious defects. Generally, conductive rubber or conductive silicone pads made by adding conductive powders such as aluminum powder, silver powder, and carbon black to elastic materials are used as sealing gaskets to take into account the performance of both. However, since the internal structure of these materials is not a continuous conductor, they cannot effectively shield electromagnetic waves of certain frequencies. In fields such as aerospace, high-end electronic instruments, etc., which have strict requirements on electromagnetic shielding and sealing performance, traditional sealed and shielded electrical connectors are difficult to meet actual needs. This urgently requires the development of a new electrical connector technology that can ensure good sealing and shielding effects at the same time. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a sealed shielding electrical connector, which is particularly suitable for electrical connectors that need to be sealed and shielded.

[0005] The technical solution adopted by the present invention is: in a first aspect, a sealed shielding electrical connector is provided, which is used to be arranged on the installation panel of the equipment, comprising:

[0006] An electrical connector body;

[0007] A mounting panel, sleeved on the electrical connector body;

[0008] A sealing gasket, sleeved on the electrical connector body and arranged above the mounting panel;

[0009] A flange, sleeved on the electrical connector body and arranged above the sealing gasket;

[0010] A fastener is used to fix the mounting panel, the sealing gasket and the flange.

[0011] Furthermore, the sealing gasket is at least partially covered with a shielding film layer.

[0012] Furthermore, the sealing gasket is not covered with the shielding film layer at a position where it contacts the electrical connector body and the fastener.

[0013] Furthermore, the thickness of the shielding film layer is not less than 1 micron.

[0014] Furthermore, the method of covering the shielding film layer on the sealing gasket includes pasting a metal foil material on the sealing gasket.

[0015] Furthermore, the method of coating the shielding film layer on the sealing gasket includes plating a metal film on the sealing gasket.

[0016] Furthermore, the method of coating the shielding film layer on the sealing gasket includes evaporating a metal layer on the sealing gasket.

[0017] Furthermore, the method of covering the shielding film layer on the sealing gasket includes pasting a polyimide film on which a metal film is evaporated on the sealing gasket.

[0018] The advantages and positive effects of the present invention are as follows: due to the adoption of the above technical scheme, through the unique sealing gasket covering design, the electrical connector has a better shielding effect on the basis of having good sealing performance; the uncoated area of ​​the sealing gasket is retained at the key position, the elasticity of the sealing gasket is maintained, the sealing effect is guaranteed not to be affected, and the reliability of the electrical connector working in special environments such as low pressure or vacuum is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of a sealed shielded electrical connector according to an embodiment of the present invention

[0020] Figure 2 Schematic diagram of a sealed shielding electrical connector according to an embodiment of the present invention

[0021] Figure 3 Schematic diagram of the coverage of the shielding film layer on the sealing gasket according to one embodiment of the present invention

[0022] In the figure:

[0023] 100, electrical connector body 200, mounting panel 300, sealing gasket

[0024] 400, flange 500, fastener 600, shielding film layer DETAILED DESCRIPTION

[0025] The present disclosure is described more fully below with reference to the accompanying drawings, in which exemplary embodiments of the present disclosure are described. The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0026] like Figure 1 As shown, the present invention provides a sealed shielding electrical connector for being arranged on a mounting panel 200 of a device, comprising:

[0027] The electrical connector body 100 and the mounting panel 200 are sleeved on the electrical connector body 100;

[0028] The sealing gasket 300 is sleeved on the electrical connector body 100 and is disposed above the mounting panel 200;

[0029] The flange 400 is sleeved on the electrical connector body 100 and is disposed above the sealing gasket 300;

[0030] The fastener 500 is used to fix the mounting panel 200 , the sealing gasket 300 and the flange 400 .

[0031] By adopting the above device, the electrical connector body 100 has an internal structure and interface design that meets the electrical connection standard to ensure the stable transmission of signals and power. The size and shape of the mounting panel 200 need to be compatible with the electrical connector body 100, and have sufficient strength and stability to support subsequent connection and fixing operations. The material of the sealing gasket 300 includes but is not limited to silicone and rubber, which has good elasticity and sealing performance. The sealing gasket 300 is a shape that can be sleeved on the electrical connector body 100, and can effectively play a sealing role in subsequent operations. The flange 400 can be tightly sleeved on the electrical connector body 100, and its structure should be convenient for fixing and connecting with other components to ensure the stability of the overall structure. By arranging the sealing gasket 300 between the mounting panel 200 and the flange 400, the electrical connector has good sealing performance in a low pressure or vacuum environment, ensuring the reliable transmission of electrical signals and electrical energy, so that the electrical equipment can continue to operate normally after connection; prevent external gas or impurities from invading and affecting the normal operation of internal electrical components, such as causing short circuits, corrosion and other problems, thereby destroying the electrical transmission performance of the electrical connector.

[0032] In order to solve the problem of electromagnetic interference encountered by the electrical connector, an implementation method is provided in this embodiment.

[0033] like Figure 2As shown, in one embodiment, the sealing gasket 300 is at least partially covered with a shielding film layer 600 .

[0034] By adopting the above-mentioned device, a shielding film layer 600 is coated on the sealing gasket 300. The material of the shielding film layer 600 includes but is not limited to aluminum, copper and silver. The shielding film layer 600 forms a continuous conductive connection between the flange 400 and the mounting panel 200, constructing a continuous shielding layer, effectively blocking the propagation of electromagnetic waves, and ensuring a good shielding effect for electromagnetic waves of different frequencies, so that the electrical connector has a better shielding effect on the basis of good sealing performance.

[0035] In order to solve the problem that the sealing performance of the sealing gasket is affected after being coated with the shielding film layer, an implementation method is provided in this embodiment.

[0036] like Figure 3 As shown, in one embodiment, the sealing gasket 300 is not covered with the shielding film layer 600 at the position in contact with the electrical connector body 100 and the fastener 500 .

[0037] By adopting the above device, the shielding film layer 600 is not set at the position where the sealing gasket 300 contacts the electrical connector body 100 and the fastener 500. The sealing gasket 300 can be fully compressed between the flange 400 and the mounting panel 200 to fill the gap between the two, ensuring that the elastic performance of the sealing gasket 300 is not affected, thereby ensuring a good sealing effect.

[0038] In order to improve the shielding effect of the shielding film layer on the sealing gasket, an implementation method is provided in this embodiment.

[0039] In one embodiment, the thickness of the shielding film layer 600 is not less than 1 micrometer.

[0040] By adopting the above device, it is ensured that the thickness of the shielding film layer is not less than 1 micron to achieve a good shielding effect.

[0041] In order to solve the problem that the shielding film layer provided on the sealing gasket has a poor effect, some implementation methods are provided in this embodiment.

[0042] In one embodiment, the method of covering the shielding film layer 600 on the sealing gasket 300 includes pasting a metal foil on the sealing gasket 300 .

[0043] The above device is used to cut metal foils including but not limited to aluminum foil, copper foil and silver foil into suitable shapes and sizes, and then use adhesive to stick them on the surface of the sealing gasket 300. The selection of adhesives needs to consider its viscosity, temperature resistance and chemical stability to ensure the firm bonding of the metal foil and the sealing gasket and its reliability in the use environment. During the pasting process, it is necessary to remove bubbles between the foil and the sealing gasket 300 to ensure the continuity and integrity of the shielding film layer and prevent electromagnetic leakage.

[0044] In one embodiment, the method of coating the shielding film layer 600 on the sealing gasket 300 includes plating a metal film on the sealing gasket 300 .

[0045] The above device is used, and the sputtering coating technology is adopted to bombard the metal target with an ion beam, and the sputtered metal atoms are deposited on the surface of the sealing gasket 300 to form a thin film. The sealing gasket 300 is placed under the target of the sputtering device, and the ions are accelerated by applying an electric field to bombard the metal target, and the sputtered metal atoms migrate to the surface of the sealing gasket 300 and form a thin film. This method can realize the coating of different metal materials, and the sputtering parameters can be controlled to adjust the thickness and performance of the film.

[0046] In one embodiment, the method of coating the shielding film layer 600 on the sealing gasket 300 includes evaporating a metal layer on the sealing gasket 300 .

[0047] By using the above device and vapor deposition to deposit a metal film on the surface of the sealing gasket 300, the thickness and uniformity of the film layer can be precisely controlled, and a high-purity, dense film can be formed, which is suitable for applications with high shielding performance requirements.

[0048] In one embodiment, the method of covering the shielding film layer 600 on the sealing gasket 300 includes pasting a polyimide film on which a metal film is evaporated on the sealing gasket 300 .

[0049] By using the above device, the polyimide film is placed in the chamber of the vacuum evaporation equipment, and a suitable metal material is selected as the evaporation source, and it is heated to a high temperature to evaporate. In a vacuum environment, metal atoms will diffuse to the surroundings and deposit on the surface of the polyimide film to form a metal layer. Combined with the conductivity and other properties of the metal layer, a coating layer with a certain elasticity and good shielding effect is provided for the sealing gasket 300, meeting the dual requirements of the electrical connector for sealing and shielding.

[0050] The following describes the contents involved in the above embodiment in conjunction with a preferred embodiment.

[0051] The mounting panel 200 is set on the electrical connector body 100 by welding or integral processing. The sealing gasket 300 is in a shape that can be sleeved on the electrical connector body 100. The flange 400 is tightly sleeved on the electrical connector body 100, and its structure should be convenient for fixing and connecting with the sealing gasket 300. Fastening bolts and fastening nuts are used as fasteners 500, and their specifications and strength must meet the requirements for firmly fixing the mounting panel 200, the sealing gasket 300 and the flange 400. A shielding film layer 600 is partially coated on the surface of the sealing gasket 300. The coating layer is annular. The shielding film layer 600 is formed by evaporation to ensure that its thickness is not less than 1 micron. The position in contact with the electrical connector body 100 and the fastener 500 extends to a certain distance from the front and back of the sealing gasket 300 without being coated with the shielding film layer. The specific distance depends on the actual situation. The sealing gasket 300 and the flange 400 are sequentially mounted on the electrical connector body 100 above the mounting panel 200, the fastening bolts are inserted into the screw holes reserved in the mounting panel 200, the sealing gasket 300 and the flange 400, and are tightened with fastening nuts to ensure that the sealing gasket 300 has sufficient compression.

[0052] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A sealed shielded electrical connector, used for being arranged on a mounting panel of a device, characterized in that: include: An electrical connector body, the mounting panel being sleeved on the electrical connector body; A sealing gasket, sleeved on the electrical connector body and arranged above the mounting panel; A flange, sleeved on the electrical connector body and arranged above the sealing gasket; A fastener is used to fix the mounting panel, the sealing gasket and the flange.

2. The sealed shielded electrical connector according to claim 1, characterized in that: The sealing gasket is at least partially covered with a shielding film layer.

3. The sealed shielded electrical connector according to claim 2, characterized in that: The sealing gasket is not covered with the shielding film layer at a position where it contacts the electrical connector body and the fastener.

4. The sealed shielded electrical connector according to claim 2 or 3, characterized in that: The thickness of the shielding film layer is not less than 1 micron.

5. The sealed shielded electrical connector according to claim 2 or 3, characterized in that: The method of covering the shielding film layer on the sealing gasket includes pasting a metal foil material on the sealing gasket.

6. The sealed shielded electrical connector according to claim 2 or 3, characterized in that: The method of covering the shielding film layer on the sealing gasket includes plating a metal film on the sealing gasket.

7. The sealed shielded electrical connector according to claim 2 or 3, characterized in that: The method of covering the shielding film layer on the sealing gasket includes evaporating a metal layer on the sealing gasket.

8. The sealed shielded electrical connector according to claim 2 or 3, characterized in that: The method of covering the shielding film layer on the sealing gasket includes pasting a polyimide film on which a metal film is vapor-deposited on the sealing gasket.

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