Vacuum sealing connector

Abstract

The utility model belongs to the technical field of signal transmission, and particularly relates to a vacuum sealing connector which comprises two protective covers and a metal connecting part connecting the two protective covers, connecting ends are fixedly connected to the interiors of the two protective covers, the two connecting ends are connected through a conductive connecting piece, the conductive connecting piece is arranged in the metal connecting part in a penetrating mode, and the conductive connecting piece is connected with the metal connecting part. The exterior of the conductive connecting piece is fixedly connected with the metal connecting part through the insulating sealing part I; the connector is connected through the conductive connecting piece, the first insulation sealing part is embedded in the metal connecting part, and the conductive connecting piece is sealed through the first insulation sealing part, so that a better sealing effect is achieved, the outgassing rate is low in a vacuum environment, the vacuum degree is not damaged, and the vacuum environment is not polluted; the problem that a vacuum sealing connector filled with a sealing object is poor in sealing performance and high temperature resistance is effectively solved.

Description

Technical Field

[0001] The present application relates to the field of signal transmission technology, and in particular to a vacuum sealed connector. Background Art

[0002] A vacuum-sealed connector, also commonly called a vacuum feedthrough or vacuum electrode, is a connector used in vacuum containers to isolate the vacuum from the atmosphere. Installed in a vacuum container, the connector is evacuated, with one side exposed to the vacuum and the other to the atmosphere, ensuring both vacuum leak prevention and signal transmission.

[0003] The USB connectivity solution under vacuum is currently mainly a sealant filling solution. For example, the vacuum USB data transmission feedthrough connector with utility model patent application number 202022959445.6 uses a ceramic insulation filling layer made of a mixture of epoxy resin, curing agent, aluminum oxide, etc. By pouring liquid insulating ceramic into the annular cavity, when the insulating ceramic is in a semi-solidified state, the cover is sealed and left to stand for 12 to 24 hours to allow the insulating ceramic to solidify to form an insulating ceramic filling layer;

[0004] In addition to the ceramic powder-epoxy resin mixture used in the aforementioned patent, various insulating potting compounds and insulating sealants can also be used to achieve sealing. This technical solution can solve some technical problems and can be used normally in some application scenarios with lower requirements.

[0005] USB vacuum sealed connectors using a sealing filler solution have the following disadvantages:

[0006] 1. Poor sealing performance. The sealing effect of various sealants mainly depends on the bonding effect of the glue, and some sealants can only have good bonding effects on certain specific materials. In this sealing filling solution, it is easy to cause sealing leakage when bonding different materials such as metals, circuit boards, and electronic components at the same time.

[0007] 2. Poor high-temperature resistance. Currently, the operating temperature of most sealants is limited to 130°C. Even sealants that claim to withstand temperatures up to 300°C are susceptible to leaks in high operating temperatures or when there are large temperature swings, due to the significant difference in thermal expansion coefficients between the sealant and the metal. Furthermore, sealants are prone to cracking or denaturing at high temperatures, significantly reducing their mechanical strength and service life.

[0008] 3. The vacuum environment is characterized by cleanliness. Common working conditions are also accompanied by ultra-high temperatures (above 300°C) or ultra-low temperatures (below -60°C), radiation, etc. In such special environments, sealants or some conventional plastics will release gases, affecting the real-time vacuum degree in the vacuum container, polluting the vacuum environment, and the material itself may also denature or even fail.

[0009] In summary, sealed connectors with ceramic insulation filling layers will cause damage to circuit boards. Vacuum sealed connectors filled with sealants can only be used under conditions where the vacuum degree is not high, the temperature is not high, and the airtightness requirements are not high, and therefore have great limitations. Utility Model Content

[0010] The purpose of this application is to provide a vacuum sealing connector to solve the technical problems raised in the above background technology.

[0011] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a vacuum-sealed connector, comprising two protective covers connecting a metal connecting part of the two protective covers, and connectors are fixedly connected to the inside of the two protective covers, and the two connecting ends are connected by a conductive connecting piece, the conductive connecting piece is passed through the metal connecting part, and the outside of the conductive connecting piece is fixed to the metal connecting part through an insulating sealing part.

[0012] In one embodiment, the connection end includes a connector directly connected to the conductive connector and a connector connected to the conductive connector through a circuit board.

[0013] In one embodiment, the connector includes a USB interface, an Ethernet interface, a digital video and audio interface, a serial bus interface, and a parallel bus interface.

[0014] In one embodiment, a grounding conductive connector is further connected between the two connectors, and the outside of the grounding conductive connector is fixedly connected to the metal connecting portion via a second insulating sealing portion.

[0015] In one embodiment, a hole groove for accommodating a conductive connector and a grounding conductive connector is opened inside the metal connecting part, and the insulating sealing part 1 and the insulating sealing part 2 are respectively fixed to the outside of the conductive connector and the grounding conductive connector, and the outer surfaces of the insulating sealing part 1 and the insulating sealing part 2 are fixed to the inner wall of the hole groove.

[0016] In one embodiment, the first insulating sealing part and the second insulating sealing part are both selected from the group consisting of a glass sealing body, an insulating sealing body, and a packaging body.

[0017] In one embodiment, the metal connection portion is formed integrally with the two protective covers.

[0018] In one embodiment, the metal connection portion has a flange structure.

[0019] In one embodiment, the number of the conductive connector and the grounding conductive connector is no less than one.

[0020] In one embodiment, the connector includes a straight connector and an elbow connector, and the conductive connector includes a cable.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1) This application connects the connectors using conductive connectors, and then uses glass sintering or ceramic brazing solutions to embed an insulating sealing part 1 in the metal connecting part. The insulating sealing part 1 is used to seal the conductive connector, which not only achieves a better sealing effect, but also has a low outgassing rate in a vacuum environment, will not destroy the vacuum degree, and will not pollute the vacuum environment, effectively solving the problems of poor sealing and high temperature resistance of vacuum sealed connectors filled with sealants in the prior art.

[0023] 2) This application connects the two connectors with a grounded conductive connector, and the grounded conductive connector can be conductively connected to the metal connection part, and static electricity is released through the metal connection part, which can effectively prevent static electricity accumulation, thereby protecting the connector from damage caused by electrostatic discharge (ESD). At the same time, grounding can reduce the noise caused by electromagnetic interference (EMI) and radio frequency interference (RFI) during signal transmission. Grounding shielding helps maintain signal stability and integrity, especially during high-speed data transmission. Grounding helps reduce electromagnetic interference generated by the connector and its surrounding circuits. For sensitive equipment or application scenarios, reducing electromagnetic radiation is very important, especially in medical equipment, communication equipment and other fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of this application;

[0025] Figure 2 This is a structural diagram of Example 1 of the present application;

[0026] Figure 3 This is a structural diagram of the second embodiment of the present application;

[0027] Figure 4 This is a schematic diagram of the connector, conductive connector and circuit board structure of this application.

[0028] In the figure: 1. Protective cover; 2. Metal connecting part; 3. Connector; 4. Conductive connecting part; 5. Circuit board; 6. Grounding conductive connecting part; 7. Insulating sealing part 1; 8. Insulating sealing part 2. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Example

[0031] See also Figure 1-2 The present application provides a technical solution: a vacuum-sealed connector, comprising two protective covers 1, a metal connecting part 2 connecting the two protective covers 1, and a connecting end fixedly connected inside the two protective covers 1, the two connecting ends being connected via a conductive connector 4 and a grounding conductive connector 6 (the conductive connector 4 and the grounding conductive connector 6 are both conductive rods, which are used to penetrate inside and outside the vacuum and are respectively connected to the two connecting ends, so as to electrically connect the two connecting ends), the conductive connector 4 and the grounding conductive connector 6 are both passed through the metal connecting part 2, and the outside of the conductive connector 4 is fixedly connected to the metal connecting part 2 via an insulating sealing part 7.

[0032] The metal connection part 2 is provided with a hole groove for accommodating the conductive connection part 4 and the grounding conductive connection part 6. In this embodiment, the grounding conductive connection part 6 is connected to the metal connection part 2. In this way, the grounding conductive connection part 6 is conductively connected to the metal connection part 2, which is called "grounding". Static electricity is released through the metal connection part 2, which can effectively prevent static electricity accumulation, thereby protecting the connector from damage caused by electrostatic discharge (ESD). At the same time, grounding can reduce noise caused by electromagnetic interference (EMI) and radio frequency interference (RFI) during signal transmission. Grounding shielding helps to maintain signal stability and integrity, especially in high-speed data transmission. Grounding helps to reduce electromagnetic interference generated by the connector and its surrounding circuits. For sensitive equipment or application scenarios, reducing electromagnetic radiation is very important, especially in the fields of medical equipment, communication equipment, etc. The insulating sealing part 7 is fixed to the outside of the conductive connection part 4, and the outer surface of the insulating sealing part 7 is fixed to the inner wall of the hole groove.

[0033] The insulating sealing portion 7 is one of a glass seal, an insulating seal, and a package, using glass or ceramic to achieve insulation and sealing. Compared with the sealant solution, glass and ceramic have higher high temperature resistance and better airtightness, and a low outgassing rate in a vacuum environment, which will not affect the vacuum degree or pollute the vacuum environment. When the insulating sealing portion 7 is a glass seal, an insulating seal, or other porous material, it is a single part. The insulating sealing portion 7 can also be a package composed of multiple parts (a transition sealing structure commonly used in the field of ceramic brazing). For such a package, please refer to the Chinese utility model patent disclosed in the prior art with announcement number CN220106984U;

[0034] The use of the insulating sealing part 7 to seal the conductive connector 4 not only achieves a better sealing effect, but also has a low outgassing rate in a vacuum environment, will not destroy the vacuum degree, and will not pollute the vacuum environment, effectively solving the problems of poor sealing and high temperature resistance of vacuum sealed connectors filled with sealants in the prior art. Example

[0035] See also Figure 1 、 Figure 3 and Figure 4 The present application provides a technical solution: Example 2 includes all the structures in Example 1, but the difference between Example 2 and Example 1 is that the outside of the grounding conductive connector 6 is fixedly connected to the metal connecting part 2 through the insulating sealing part 2 8, the insulating sealing part 2 8 is fixedly connected to the outside of the grounding conductive connector 6, and the outer surface of the insulating sealing part 2 8 is fixedly connected to the inner wall of the hole groove. The insulating sealing part 2 8 is also a glass seal, an insulating seal, and a packaging body like the insulating sealing part 1 7, and uses glass, ceramic or packaging structure to achieve insulation and sealing. In this way, the grounding conductive connector 6 is not conductively connected to the metal connecting part 2. Under this solution, the two connection ends are connected through the grounding conductive connector 6, but are not connected to the metal shell, which is called "floating grounding".

[0036] In Example 1 and Example 2:

[0037] The connection end includes a connector 3 directly connected to the conductive connector 4 and a connector connected to the conductive connector 4 through a circuit board 5. There may be only one circuit board 5, fixed to one of the connectors 3, or there may be two circuit boards 5, fixed to both connectors 3. The connector 3 and the conductive connector 4 are connected to either side of the circuit board (regardless of whether the circuit board is placed vertically or horizontally). The circuit board 5 is used to convert the circuit to achieve specific signal processing requirements. The substrate of the circuit board 5 is generally made of ordinary epoxy resin, which can withstand long-term high temperatures below 150°C. If it needs to withstand higher temperatures, it can be replaced with ceramic or engineering plastic materials (such as polyimide and fluoroplastic). The insulator in the connector generally withstands temperatures below 85°C. If it needs to withstand higher temperatures, it can also be replaced with ceramic or engineering plastic materials (such as polyimide and fluoroplastic).

[0038] The connector 3 includes multiple connectors such as USB interface, Ethernet interface, digital video and audio interface, serial bus interface, parallel bus interface, etc., which can meet the requirements of sealed and insulated connection between different connectors, and can also be a conversion connector (for example, two connectors 3 are two different types of HDMI connectors 3 or different types of USB connectors, realizing connector conversion connection and signal transmission).

[0039] The metal connection part 2 may be integrally formed with the two protective covers 1, or it may be separately connected to the two protective covers 1. When the metal connection part 2 is separately connected to the two protective covers 1, the two connectors are respectively embedded in the middle of the two protective covers, and the two protective covers are respectively fixed at the two ends of the metal connection part 2 to maintain the relative fixed position of the two connectors.

[0040] The metal connection part 2 may be in the form of a mounting flange structure, which is used to weld or bolt the entire connector to other parts.

[0041] The number of the conductive connector 4 and the grounding conductive connector 6 is no less than one. The outer diameter, number, and arrangement of the conductive connector 4 and the grounding conductive connector 6 are adjusted according to the requirements of different connectors 3.

[0042] The connector 3 includes a straight connector 3 and an elbow connector 3 (used to meet the plugging and unplugging requirements in special spaces), and the conductive connector 4 includes a cable.

[0043] Examples 1 and 2 of the present application show single-channel connectors. In order to meet the connection requirements of multiple channels, the number of conductive connectors 4, grounding conductive connectors 6, connectors, and protective covers 1 will also increase exponentially. There may be multiple single-channel connection structures in the metal connection part 2, and the change in quantity is also within the protection scope of the present application.

[0044] The above shows and describes the basic principles, main features and advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present application is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present application, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0045] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A vacuum-sealed connector, characterized in that: The invention comprises two protective covers (1) and a metal connecting portion (2) connecting the two protective covers (1), wherein the two protective covers (1) are both fixedly connected with a connecting end inside, and the two connecting ends are connected via a conductive connecting member (4), wherein the conductive connecting member (4) is passed through the metal connecting portion (2), and the outside of the conductive connecting member (4) is fixedly connected to the metal connecting portion (2) via an insulating sealing portion (7).

2. A vacuum-sealed connector according to claim 1, characterized in that: The connection end comprises a connector (3) directly connected to the conductive connector (4) and a connector connected to the conductive connector (4) via a circuit board (5).

3. The vacuum-sealed connector according to claim 2, wherein: The connector (3) includes a USB interface, an Ethernet interface, a digital video and audio interface, a serial bus interface, and a parallel bus interface.

4. The vacuum-sealed connector according to claim 3, wherein: A grounding conductive connector (6) is also connected between the two connection ends, and the outside of the grounding conductive connector (6) is fixedly connected to the metal connection part (2) via the second insulating sealing part (8).

5. The vacuum-sealed connector according to claim 4, characterized in that: The metal connecting portion (2) is provided with a hole groove for accommodating the conductive connecting member (4) and the grounding conductive connecting member (6); the insulating sealing portion 1 (7) and the insulating sealing portion 2 (8) are respectively fixed to the outside of the conductive connecting member (4) and the grounding conductive connecting member (6); and the outer surfaces of the insulating sealing portion 1 (7) and the insulating sealing portion 2 (8) are fixed to the inner wall of the hole groove.

6. The vacuum-sealed connector according to claim 5, characterized in that: The insulating sealing part 1 (7) and the insulating sealing part 2 (8) are both one of a glass sealing body, an insulating sealing body, and a packaging body.

7. The vacuum-sealed connector according to claim 6, characterized in that: The metal connecting portion (2) and the two protective covers (1) are formed in one piece.

8. The vacuum-tight connector according to claim 7, characterized in that: The metal connecting portion (2) has a flange structure in appearance.

9. The vacuum-sealed connector according to claim 8, characterized in that: The number of the conductive connecting member (4) and the grounding conductive connecting member (6) is no less than one.

10. The vacuum-sealed connector according to claim 9, characterized in that: The connector (3) comprises a straight connector (3) and an elbow connector (3), and the conductive connector (4) comprises a cable.

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