Structure and function integrated electric connector for vacuum equipment

Abstract

The utility model belongs to the technical field of vacuum equipment, and particularly relates to a structure and function integrated electric connector for vacuum equipment. The inner shell is matched with a shell of the vacuum equipment, the conductive cores are used for transmitting signals, the outer shell is used for sealing the inner shell and the conductive cores, each conductive core is composed of a connecting body and two electrodes, and the two electrodes are located on two opposite plate faces of the connecting body respectively. Wherein one electrode penetrates through a first through hole in the inner shell to be connected with a vacuum equipment shell, the other electrode penetrates through a second through hole in the outer shell to be connected with external equipment, the connector is arranged between the inner shell and the outer shell, and the connector blocks the first through hole and the second through hole after being extruded by the extrusion device. Through the special structural design of the conductive core, the air tightness of the electric connector is ensured, and the electric connector is convenient to adapt to use environments such as vibration and external impact.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum equipment, and in particular relates to a structural and functional integrated electrical connector for vacuum equipment. Background Art

[0002] Electrical connectors are a widely used and important electrical device, primarily providing circuit connection and signal transmission between devices. When connecting circuit signals from the atmospheric environment to precision vacuum equipment, it is crucial to ensure that the vacuum environment within the equipment is not significantly altered by the introduction of the circuitry. Therefore, the electrical connectors connecting to the internal cavity of the vacuum equipment must possess both electrical performance and vacuum tightness. Electrical connectors typically consist of a fixed receptacle and a plug for the connecting cable. To ensure vacuum tightness, the outer shell of the plug for the connecting cable is typically connected to the outer shell of the vacuum equipment cavity, ensuring airtightness between the shells while maintaining a certain range of forces and temperature fluctuations. The plugs within the plug shell must be insulated from each other and must maintain vacuum tightness both between the plugs and the receptacle shell. To achieve both insulation and airtightness, the gaps between the plugs are typically filled with low-melting-point glass.

[0003] However, because cables frequently plug and unplug into electrical connectors, and some connectors often operate in vibration environments, the brittleness of glass fillers compared to metal can lead to problems such as reduced airtightness in long-term stress environments. Furthermore, the use of brittle glass insulation and airtight fillers can make electrical connectors less able to withstand large, transient stresses, placing them under significant environmental constraints. Therefore, a structurally and functionally integrated electrical connector for vacuum equipment is urgently needed to address these issues. Utility Model Content

[0004] To overcome the above-mentioned shortcomings of the prior art, the present invention provides a structurally and functionally integrated electrical connector for vacuum equipment. The present invention ensures the airtightness of the electrical connector through the special structural design of the conductive core, and is easily adaptable to operating environments such as vibration and external impact.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A structural and functional integrated electrical connector for vacuum equipment includes an inner housing adapted to the housing of the vacuum equipment, a plurality of conductive cores for transmitting signals, an outer housing for sealing the inner housing and the conductive cores, and an extrusion device. The conductive core consists of a connector and two electrodes, the two electrodes being located on two opposing plate surfaces of the connector and interconnected to maintain electrical connectivity. One electrode passes through a first through hole on the inner housing and is connected to a circuit within the housing of the vacuum equipment, and the other electrode passes through a second through hole on the outer housing and is connected to an external device. The connector is placed between the inner housing and the outer housing, and the connector is deformed by extrusion by the extrusion device to seal the first through hole and the second through hole to achieve sealing.

[0007] Preferably, the extrusion device includes a threaded blind hole provided on the inner shell, a third through hole on the outer shell, and a first fastening bolt, and the first fastening bolt passes through the third through hole and is threadedly connected to the threaded blind hole.

[0008] Preferably, the hardness of the outer shell and the hardness of the inner shell are both 3 times or more than the hardness of the connector.

[0009] Preferably, the conductive core is pure copper.

[0010] Preferably, the outer shell is made of high-strength steel.

[0011] Preferably, the inner shell is made of high-strength steel.

[0012] Preferably, the electrode is rod-shaped, and the shape of the first through hole and the shape of the second through hole are both adapted to the shape of the electrode.

[0013] Preferably, the inner shell is threadedly connected to the sealing threaded hole on the outer wall of the vacuum equipment shell through a second fastening bolt.

[0014] Preferably, the surface of the inner shell and the surface of the outer shell are both provided with an insulating coating.

[0015] Preferably, a first positioning groove is provided on the side of the inner shell close to the vacuum equipment shell, and a second positioning groove is provided on the vacuum equipment shell. The first positioning groove and the second positioning groove form a sealed cavity, and a sealing ring (rubber or metal) is provided in the cavity, so that the inner shell is sealed and connected to the vacuum equipment shell.

[0016] The advantages of the present invention are:

[0017] (1) The utility model includes a high-strength insulating shell connected to a vacuum device and a modular conductive core for transmitting electrical signals. The electrical signal transmission wire is made into a modular interlayer and placed between the high-strength insulating shells to form an integrated electrical connector with both electrical signal transmission and vacuum sealing. First, the inner high-strength insulating shell is sealed and connected to the outer wall of the vacuum instrument. The electrode wires on one side of the conductive core are inserted into the wire holes of the inner high-strength insulating shell in sequence. Then, the wire holes in the outer high-strength insulating shell are connected to the electrode wires on the other side of the conductive core respectively. Finally, the inner and outer high-strength insulating shells are fastened by bolts. The plate-shaped connector of the conductive core between the inner and outer high-strength insulating shells is squeezed to force it to deform plastically, blocking the electrode through-holes on the inner and outer insulating shells to achieve vacuum sealing requirements. At the same time, the electrodes can be connected to the circuit systems inside and outside the vacuum equipment.

[0018] (2) The present invention adopts a sandwich structure, placing the conductive core between high-strength inner and outer layers. This ensures the airtightness and electrical signal transmission of the vacuum equipment under conditions of vibration, impact, and other interference. The present invention can be designed as a single or multiple conductive core structure according to requirements, making it suitable for mass production and convenient for leading out single or multiple groups of electrical signal lines inside the vacuum equipment.

[0019] (3) The conductive core of the utility model is an integrated conductive material, which can ensure the conduction of electrical signals inside and outside the vacuum equipment. At the same time, the surface of the inner shell and the outer shell (including the surface of the through hole through which the wires at both ends of the conductive core pass) are provided with an insulating coating, thereby achieving electrical insulation of the area surrounding the conductive core.

[0020] (4) The present invention has a simple structure and can realize single-channel or multi-channel electrical signal connection through modular design, which is convenient for large-scale production and maintenance and replacement. The electrical connector of the present invention has a sandwich structure and is relatively thin in thickness, which is conducive to use in space-constrained areas. The plastic deformation of the conductive core flat portion blocks the pores between the inner shell and the outer shell to achieve vacuum sealing, thus facilitating the adaptation to use environments such as vibration and external impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the utility model.

[0022] Figure 2 This is a schematic diagram of the conductive core structure of the utility model.

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model.

[0024] The meanings of the symbols in the figure are as follows:

[0025] 1-inner shell, 11-first through hole, 12-second fastening bolt, 2-conductive core, 21-connector, 22-electrode, 3-outer shell, 31-second through hole, 4-extrusion device, 41-first fastening bolt, 42-third through hole, 43-threaded blind hole, 5-vacuum equipment shell, 51-sealing threaded hole, 6-second positioning groove, 7-sealing ring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the drawings and embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] like Figure 1-3 As shown, a structurally and functionally integrated electrical connector for vacuum equipment includes an inner housing 1 for connecting to a vacuum equipment housing 5, a sealing ring 7 for sealing between the vacuum equipment housing 5 and the inner housing 1, a conductive core 2 for connecting electrical signals between the inside and outside of the vacuum equipment housing 5, and an extrusion device 4 for sealing between the conductive core 2 and the inner housing 1. The extrusion device 4 includes a threaded blind hole 43 provided in the inner housing 1, a third through hole 42 provided in the outer housing 3, and a first fastening bolt 41. The first fastening bolt 41 passes through the third through hole 42 and is threadedly connected to the threaded blind hole 43.

[0028] The inner housing 1 is a structural component that connects the electrical connector to the vacuum equipment housing 5. Its main body is a plate-like structure made of a high-strength, high-toughness material (such as high-strength steel). Its planar dimensions match the size of the hole in the vacuum equipment housing 5 where the electrical connector is to be installed. A first through-hole 11 is provided in its center for the conductive core 2 to pass through. At the same time, a first positioning groove, which can be used with a soft or hard seal, is provided on the side near the vacuum equipment housing 5. This groove mates with a second positioning groove 6 on the surface of the vacuum equipment housing 5, facilitating the installation of a sealing ring 7. The inner housing 1 is provided with a through-bolt hole and a threaded blind hole 43. The through-bolt hole mates with the sealing threaded hole 51 on the vacuum equipment housing 5, facilitating fastening with a second fastening bolt 12. Together with the sealing ring 7, this ensures airtightness between the inner housing 1 and the vacuum equipment housing 5. The first fastening bolt 41 penetrates the third through-hole 42 on the outer housing 3 and is fastened to the threaded blind hole 43. In addition, the surface of the inner housing 1 is provided with an insulating coating, the material and thickness of which ensure that the electrical connector maintains its insulating properties under the allowable voltage and current conditions.

[0029] Outer shell 3 is a plate-like structure made of a high-strength, high-toughness material (e.g., high-strength steel). A second through-hole 31 is defined in its center for the electrodes of conductive core 2 to pass through. A third through-hole 42 is defined along the outer edge of outer shell 3, its position and size matching those of threaded blind holes 43 in inner shell 1. The surface of outer shell 3 is coated with an insulating coating, the material and thickness of which ensure that the electrical connector maintains its insulation properties under the allowable voltage and current conditions.

[0030] The conductive core 2 has a structure such as Figure 2 As shown, it is an integral structure, and the material is a low-resistance, high-conductivity, low-strength material (such as pure copper). The conductive core 2 is composed of a connector 21 and two electrodes 22. The electrodes 22 are rod-shaped and their sizes can be set according to requirements. Electrodes 22 are fixed on both sides of the connector 21 plate surface and are connected to the connector 21 as a whole to ensure high conductivity between the electrodes 22. The conductive core 2 is sandwiched between the inner shell 1 and the outer shell 3 to form a sandwich structure. The two electrodes 22 pass through the first through hole 11 and the second through hole 31 provided in the central area of ​​the inner shell 1 and the outer shell 3 respectively. The outer shell 3 and the conductive core 2 sandwiched between the inner shell 1 and the outer shell 3 are fixed to the outer surface of the inner shell 1 by passing through the third through hole 42 on the outer edge of the outer shell 3 and the threaded blind hole 43 of the inner shell 1 through the first fastening bolt 41. By continuously tightening the first fastening bolt 41 on the outer shell 3, the gap between the inner shell 1 and the outer shell 3 becomes smaller, thereby squeezing the connector 21 clamped between the inner shell 1 and the outer shell 3, forcing the connector 21 to undergo plastic deformation to seal the gap between the connector 21 and the through holes of the inner shell 1 and the outer shell 3, that is, the plastically deformed connector 21 fills the entrances of the first through hole 11 and the second through hole 31, thereby achieving sealing between the inner shell 1, the conductive core 2 and the vacuum equipment.

[0031] The working process of the device is described in detail below with reference to the drawings in the embodiments.

[0032] First, assemble the electrical connector. Place the sealing ring 7 in the second positioning groove 6 on the outer wall of the vacuum equipment housing 5, which is used to secure the electrical connector. Insert the second fastening bolt 12 through the through-bolt holes around the inner housing 1 of the electrical connector and screw it into the corresponding sealing threaded hole 51 on the outer wall of the vacuum equipment housing 5. Then, align the first positioning groove on the side of the inner housing 1 near the outer wall of the vacuum equipment housing 5 with the sealing ring 7. Tighten the second fastening bolt 12 to secure the inner housing 1 to the outer wall of the vacuum equipment housing 5. Tighten the second fastening bolt 12 to compress the sealing ring 7, achieving a vacuum seal between the inner housing 1 and the outer wall of the vacuum equipment housing 5. Insert the electrode 22 at one end of the conductive core 2 into the corresponding first through-hole 11 of the inner housing 1. Insert the electrode 22 at the other end of the conductive core 2 into the corresponding second through-hole 31 of the outer housing 3. Then, insert the first fastening bolt 41 through the third through-hole 42 at the edge of the outer housing 3 and screw it into the corresponding threaded blind hole 43 on the inner housing 1, forming a sandwich structure between the inner housing 1, the conductive core 2, and the outer housing 3. At the same time, by continuously tightening the first fastening bolt 41 to fasten the sandwich structure of the inner shell 1, the conductive core 2 and the outer shell 3, the flat portion of the conductive core 2 (connector 21) is forced to continuously undergo plastic deformation between the inner shell 1 and the outer shell 3, and finally the gap between the inner shell 1 and the outer shell 3 where the electrodes extend out of the through holes is sealed, thereby realizing the overall vacuum sealing of the electrical connector.

[0033] The conductive core 2 can be replaced as a consumable part. Each replacement can be performed by loosening the first fastening bolt 41 that fixes the inner shell 1 and the outer shell 3 to form a sandwich structure between the inner shell 1, the conductive core 2 and the outer shell 3, and then taking out the conductive core 2 to be replaced (the plate-like part has been squeezed and plastically deformed), and then reinstalling the new conductive core 2 replacement. Finally, the inner shell 1, the conductive core 2 and the outer shell 3 are retightened by the above-mentioned bolt fastening method to form a sandwich structure to complete the replacement of the conductive core 2.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A structural and functional integrated electrical connector for vacuum equipment, characterized by: The invention comprises an inner shell (1) adapted to a vacuum equipment shell (5), a plurality of conductive cores (2) for transmitting signals, an outer shell (3) for sealing the inner shell (1) and the conductive cores (2), and an extrusion device (4). The conductive core (2) is composed of a connector (21) and two electrodes (22). The two electrodes (22) are respectively located on two opposite plate surfaces of the connector (21) and are interconnected with the connector (21). One electrode (22) passes through a first through hole (11) on the inner shell (1) and is connected to a circuit in the vacuum equipment shell (5). The other electrode (22) passes through a second through hole (31) on the outer shell (3) and is connected to an external device. The connector (21) is placed between the inner shell (1) and the outer shell (3). The connector (21) is squeezed and deformed by the extrusion device (4) to block the first through hole (11) and the second through hole (31).

2. The structural and functional integrated electrical connector for vacuum equipment according to claim 1, characterized in that: The extrusion device (4) comprises a threaded blind hole (43) provided on the inner shell (1), a third through hole (42) on the outer shell (3), and a first fastening bolt (41), wherein the first fastening bolt (41) passes through the third through hole (42) and is threadedly connected to the threaded blind hole.

3. The structural and functional integrated electrical connector for vacuum equipment according to claim 1, characterized in that: The hardness of the outer shell (3) and the hardness of the inner shell (1) are both 3 times or more than the hardness of the conductive core (2).

4. The structural and functional integrated electrical connector for vacuum equipment according to claim 1, characterized in that: The conductive core (2) is made of pure copper.

5. The structural and functional integrated electrical connector for vacuum equipment according to claim 1, characterized in that: The outer shell (3) is made of high-strength steel.

6. The structural and functional integrated electrical connector for vacuum equipment according to claim 1, characterized in that: The inner shell (1) is made of high-strength steel.

7. The structural and functional integrated electrical connector for vacuum equipment according to claim 1, characterized in that: The electrode (22) is rod-shaped, and the shape of the first through hole (11) and the shape of the second through hole (31) are both compatible with the shape of the electrode (22).

8. The structural and functional integrated electrical connector for vacuum equipment according to claim 1, characterized in that: The inner housing (1) is threadedly connected to a sealing threaded hole (51) on the outer wall of the vacuum equipment housing (5) via a second fastening bolt (12).

9. The structural and functional integrated electrical connector for vacuum equipment according to claim 1, characterized in that: The surface of the inner shell (1) and the surface of the outer shell (3) are both provided with an insulating coating.

10. The structural and functional integrated electrical connector for vacuum equipment according to claim 1, characterized in that: A first positioning groove is provided on a side of the inner shell (1) close to the vacuum equipment shell (5), and a second positioning groove (6) is provided on the vacuum equipment shell (5). The first positioning groove and the second positioning groove (6) form a sealed cavity, and a sealing ring (7) is provided in the cavity, so that the inner shell (1) and the vacuum equipment shell (5) are sealed.

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