CN214505895U - Airtight coaxial connector - Google Patents
Airtight coaxial connector Download PDFInfo
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- CN214505895U CN214505895U CN202120411285.3U CN202120411285U CN214505895U CN 214505895 U CN214505895 U CN 214505895U CN 202120411285 U CN202120411285 U CN 202120411285U CN 214505895 U CN214505895 U CN 214505895U
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Abstract
The utility model relates to an airtight coaxial connector, it includes coaxial cable, sets up the joint Assembly at coaxial cable both ends, coaxial cable is by interior and outer cable inner conductor, cable medium and the cable outer conductor of including in proper order, the joint Assembly is lived including the parcel the casing of coaxial cable tip periphery, be located in the casing and with the connector inner conductor that the cable inner conductor is connected, pack in the casing and will the connector inner conductor with the casing welds integrative glass sintering insulator, shell end with the welding of cable outer conductor periphery forms a sealing connection structure together. The utility model discloses it has that the leakproofness is high, and radiation resistance, high temperature resistant, high pressure resistant, and dimensional stability is good, advantages such as resistant high low temperature.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of the cable connector, especially, relate to an airtight coaxial connector.
[ background of the invention ]
In the application scenarios of the radio frequency coaxial cable assembly at higher and higher end, it is required to have air tightness, that is: the interior of the vacuum chamber is in a vacuum state or filled with certain gas. The vacuum state or the state of filling some kind of gas can keep cable subassembly inside not leading to inside material denaturation because of the hydrone in the atmospheric environment, and then lead to the radio frequency cable subassembly electrical property to change. In the prior art, the airtight coaxial connector generally seals gaps and holes by smearing organic matters such as sealant and thread glue, and the organic matters have high temperature difference resistance, radiation resistance, large airtight leakage for a long time and high sealing pressure resistance, so that the conventional airtight coaxial connector has poor sealing property, is difficult to vacuumize, cannot resist high temperature and has high air leakage rate.
Therefore, there is a need to design a new type of airtight coaxial connector to solve the current problem.
[ Utility model ] content
A primary object of the present invention is to provide an airtight coaxial connector, which has the advantages of high sealing performance, radiation resistance, high temperature resistance, high pressure resistance, good dimensional stability, high and low temperature resistance, etc.
The utility model discloses a following technical scheme realizes above-mentioned purpose: the utility model provides an airtight coaxial connector, its includes coaxial cable, sets up the joint Assembly at coaxial cable both ends, coaxial cable is by interior and outer cable inner conductor, cable medium and the cable outer conductor of including in proper order, the joint Assembly is lived including the parcel the casing of coaxial cable tip periphery, be located in the casing and with the connector inner conductor that the cable inner conductor connects, fill in the casing and will the connector inner conductor with the casing welds integrative glass sintering insulator, the casing tip with the welding of cable outer conductor periphery forms a sealing connection structure together.
Furthermore, a medium exposed section extending out of the cable outer conductor is formed at two ends of the cable medium, and the peripheral surface of the medium exposed section is flush with the peripheral surface of the cable outer conductor.
Furthermore, a containing groove is formed at one end of the shell, the end of the coaxial cable is arranged in the containing groove, and the peripheral surface of the coaxial cable is attached to the inner wall surface of the containing groove.
Furthermore, the end part of the cable inner conductor protrudes out of the end face of the cable medium, the end part of the connector inner conductor is provided with a plug hole, and the end part of the cable inner conductor is inserted into the plug hole to realize connection with the connector inner conductor.
Furthermore, a limiting blocking surface is formed on the front end face of the accommodating groove and abuts against and is attached to the end face of the cable medium.
Furthermore, the rotatable movable cover in casing one end periphery is equipped with the connecting nut, the connecting nut axle is relative the casing axial is movable.
Furthermore, a V-shaped hole is formed in the shell and is arranged in the area of the medium exposed section.
Further, the V-shaped holes are sealed by solder particles after being inflated or vacuumized in the cable medium and are sealed after being melted by heating.
Further, the diameter of the solder particles is larger than the minimum aperture of the V-shaped hole and smaller than the maximum aperture of the V-shaped hole.
Compared with the prior art, the utility model relates to an airtight coaxial connector's beneficial effect lies in: the tail part of the joint component and the outer conductor of the cable are welded by metal cladding to form a sealed connection structure, the shell of the joint component is internally filled with insulation by using a glass sintered insulator, and the shell and the inner conductor of the connector are welded into a whole, so that the coaxial cable and the joint component form absolute sealed connection, the sealing performance is greatly improved, and the air tightness performance is guaranteed; the insulating layer is formed by sintering the insulator with glass, so that the insulating layer has the advantages of high temperature resistance, high pressure resistance, radiation resistance, good dimensional stability, high and low temperature resistance and the like; the cable medium layer structure in the coaxial cable is ingeniously designed, the V-shaped holes are arranged in the cable medium layer exposed section area on the joint assembly shell in a matched mode, vacuumizing operation or inflation operation is conveniently conducted on the cable medium layer through the V-shaped holes, the airtight coaxial connector is formed, solder particles are arranged in the V-shaped holes, after the vacuumizing operation or the inflation operation is completed, the solder particles can be melted through heating the shell, automatic plugging of the V-shaped holes is achieved, a welding sealing structure is formed, the connector manufacturing efficiency is improved, the manufacturing difficulty is reduced, the production cost is greatly reduced, and the air tightness of the connector is improved.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is a schematic view of the V-shaped hole of the present embodiment with the V-shaped hole facing upward;
FIG. 3 is a schematic view of the present embodiment with the V-shaped hole facing downward;
the figures in the drawings represent:
100 gas-tight coaxial connectors;
1, coaxial cable, 11 cable inner conductor, 12 cable medium, 13 cable outer conductor and 14 medium exposed section; 2, a connector assembly, 21 a shell, 211 a limit stop surface, 212 an annular groove, 22 a connector inner conductor, 221 a plug hole, 23 a glass sintered insulator, 24 a connecting nut and 25V-shaped holes; 3, sealing the connecting structure; 4, a snap ring; 5 solder particles; 6 air nozzles and 61 small holes.
[ detailed description ] embodiments
Referring to fig. 1 to 3, the present embodiment is an airtight coaxial connector 100, which includes a coaxial cable 1 and a connector assembly 2 connected to two ends of the coaxial cable, wherein the coaxial cable 1 sequentially includes a cable inner conductor 11, a cable medium 12 and a cable outer conductor 13 from inside to outside, the connector assembly 2 includes a housing 21 covering an outer periphery of an end portion of the coaxial cable 1, a connector inner conductor 22 located in the housing 21 and connected to the cable inner conductor 11, and a glass frit insulator 23 filled in an inner cavity of the housing 21 and fusing the connector inner conductor 22 and the housing 21 into a whole, and an end portion of the housing 21 and the cable outer conductor 13 are fused together to form a sealed connection structure 3 of the coaxial cable 1 and the connector assembly 2.
The cable medium 12 is formed at both ends with medium exposed sections 14 protruding out of the cable outer conductor 13, and the outer peripheral surface of the medium exposed sections 14 is flush with the outer peripheral surface of the cable outer conductor 13.
One end of the housing 21 is formed with a receiving groove (not shown) in which an end of the coaxial cable 1 is disposed and an outer circumferential surface of which is attached to an inner wall surface of the receiving groove. Specifically, the dielectric exposed section 14 and the cable outer conductor 13 of the partial section are inserted into the receiving groove.
The end of the cable inner conductor 11 protrudes from the end face of the cable medium 12 and is connected to the connector inner conductor 22. In this embodiment, the end of the connector inner conductor 22 is provided with a plugging hole 221, and the end of the cable inner conductor 11 is inserted into the plugging hole 221 to realize connection with the connector inner conductor 22. In other embodiments, the cable inner conductor 11 and the connector inner conductor 22 may be connected by welding or crimping.
The front end face of the accommodating groove is provided with a limiting blocking face 211, and the limiting blocking face 211 abuts against the end face of the cable medium 12 to limit the end face of the coaxial cable 1.
One end face of the glass-sintered insulator 23 is flush with the corresponding end face of the housing 21, one end of the connector inner conductor 22 is flush with the corresponding end face of the glass-sintered insulator 23, the other end of the connector inner conductor protrudes out of the corresponding end face of the glass-sintered insulator 23, and the part of the connector inner conductor 22 protruding out of the end face of the glass-sintered insulator 23 is used for being butted with an external connector.
The periphery of one end of the shell 21 is rotatably and movably sleeved with a connecting nut 24 for being in threaded locking connection with a to-be-connected piece. The outer peripheral surface of the shell 21 is provided with an annular groove 212, the inner wall surface of the connecting nut 24 is provided with a containing groove (not marked in the figure) which is correspondingly matched with the annular groove 212 to form an annular containing cavity, a snap ring 4 is arranged in the annular containing cavity, and the snap ring 4 is axially movable in the annular containing cavity. The coupling nut 24 is not disengaged from the housing 21 by the snap ring 4 and is axially movable relative to the housing 21.
A V-shaped hole 25 is formed in the housing 21 of one of the connector assemblies 2, and the V-shaped hole 25 is disposed in the region of the exposed medium section 14, so as to facilitate the operation of inflating or vacuuming the cable medium 12 through the V-shaped hole 25. The V-shaped holes 25 are sealed by the solder particles 5 after being inflated or evacuated in the cable medium 12 and are sealed by being melted by heating. The diameter of the solder particles 5 is larger than the minimum pore diameter of the V-shaped pores 25 and smaller than the maximum pore diameter of the V-shaped pores 25.
A threaded hole (not shown) is formed in the housing 21 above the V-shaped hole 25, and the air faucet can be conveniently connected through the threaded hole.
The material of the cable medium 12 can be solid plastic, low-density semi-air plastic, organic plastic particles, inorganic material particles, foamed organic plastic, powdery inorganic particles, etc., such as: solid PTFE, low-density PTFE, longitudinal hole semi-air FEP, FEP particles, glass particles, foamed PE, magnesium oxide powder, glass powder and quartz powder.
The embodiment also provides a preparation method of the airtight coaxial connector, which comprises the following steps:
1) preparing a coaxial cable 1 and a connector assembly 2;
the coaxial cable 1 comprises a cable inner conductor 11, a cable medium 12 and a cable outer conductor 13 from inside to outside in sequence, the joint component 2 comprises a shell 21, a connector inner conductor 22 positioned in the shell 21, and a glass sintered insulator 23 which is filled in a cavity in the shell 21 and used for welding the connector inner conductor 22 and the shell 21 into a whole, and a receiving groove is formed at one end of the shell 21;
2) installing two connector assemblies 2 at two ends of a coaxial cable 1 respectively, inserting the end part of the coaxial cable 1 into a receiving groove at one end of a shell 21, and welding the end part of the shell 21 and a cable outer conductor 13 together to form a sealing connection structure 3;
3) rotating the V-shaped hole 25 of the housing 21 of the connector assembly 2 upward, placing a solder particle 5 in the V-shaped hole 25, installing an air nozzle 6, and connecting the air nozzle 6 to a gas device (not shown) through a pipeline, wherein the gas device can be a vacuum device or an inflation device;
4) then the V-shaped hole 25 on the shell 21 is rotated to face downwards, and the gas device is used for vacuumizing or inflating;
5) then the V-shaped hole 25 on the shell 21 is rotated upwards, and the solder particles 5 fall to the bottom of the V-shaped hole 25 under the action of gravity;
6) heating the shell 21 to melt, cool and solidify the solder particles 5, and then blocking the V-shaped hole 25 to form a stable and firm welding and sealing structure with the shell 21;
7) and (5) removing the air faucet 6 to finish the preparation of the coaxial connector.
The air tap 6 is provided with a small hole 61, and the diameter of the small hole 61 is smaller than that of the solder particles 5, so that the solder particles 5 are effectively prevented from falling or being blown away.
The solder particles 5 are one or a combination of more of tin, lead, aluminum, copper, or glass.
In order to demonstrate the performance of the hermetic coaxial connector of this example, the hermeticity was tested using a helium mass spectrometer leak detector, and the test result was 1.56X 10-9 (mbar. liter/sec), which is excellent in hermeticity.
According to the airtight coaxial connector, the tail part of the connector assembly and the outer conductor of the cable are welded through metal cladding to form a sealed connection structure, the shell of the connector assembly is internally filled with insulation through a glass sintered insulator, and the shell and the inner conductor of the connector are welded into a whole, so that the coaxial cable and the connector assembly are connected in an absolute sealing mode, the sealing performance is greatly improved, and the airtight performance is guaranteed; the insulating layer is formed by sintering the insulator with glass, so that the insulating layer has the advantages of high temperature resistance, high pressure resistance, radiation resistance, good dimensional stability, high and low temperature resistance and the like; the cable medium layer structure in the coaxial cable is ingeniously designed, the V-shaped holes are arranged in the cable medium layer exposed section area on the joint assembly shell in a matched mode, vacuumizing operation or inflation operation is conveniently conducted on the cable medium layer through the V-shaped holes, the airtight coaxial connector is formed, solder particles are arranged in the V-shaped holes, after the vacuumizing operation or the inflation operation is completed, the solder particles can be melted through heating the shell, automatic plugging of the V-shaped holes is achieved, a welding sealing structure is formed, the connector manufacturing efficiency is improved, the manufacturing difficulty is reduced, the production cost is greatly reduced, and the air tightness of the connector is improved.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (9)
1. A hermetic coaxial connector, characterized by: it includes coaxial cable, sets up the joint Assembly at coaxial cable both ends, coaxial cable is by interior and outer cable inner conductor, cable medium and the cable outer conductor of including in proper order, the joint Assembly is lived including the parcel the casing of coaxial cable tip periphery, be located in the casing and with the connector inner conductor that the cable inner conductor connects, fill in the casing and will the connector inner conductor with casing butt fusion glass sintering insulator as an organic whole, the casing tip with the welding of cable outer conductor periphery forms a sealing connection structure together.
2. The hermetic coaxial connector according to claim 1, wherein: the cable medium is provided with medium exposed sections extending out of the cable outer conductor at two ends, and the peripheral surface of each medium exposed section is flush with the peripheral surface of the cable outer conductor.
3. The hermetic coaxial connector according to claim 1, wherein: one end of the shell is provided with a containing groove, the end part of the coaxial cable is arranged in the containing groove, and the peripheral surface of the coaxial cable is attached to the inner wall surface of the containing groove.
4. The hermetic coaxial connector according to claim 1, wherein: the end part of the cable inner conductor protrudes out of the end face of the cable medium, the end part of the connector inner conductor is provided with a plug hole, and the end part of the cable inner conductor is inserted into the plug hole to realize connection with the connector inner conductor.
5. The hermetic coaxial connector according to claim 3, wherein: the front end face of the containing groove is provided with a limiting blocking face, and the limiting blocking face abuts against and is attached to the end face of the cable medium.
6. The hermetic coaxial connector according to claim 1, wherein: the rotatable movable cover in casing one end periphery is equipped with the connecting nut, the connecting nut axle is for casing axial is movable.
7. The hermetic coaxial connector according to claim 2, wherein: the shell is provided with a V-shaped hole, and the V-shaped hole is arranged in the region of the medium exposed section.
8. The hermetic coaxial connector according to claim 7, wherein: and the V-shaped hole is sealed by solder particles after being inflated or vacuumized in the cable medium and is sealed after being heated and melted.
9. The hermetic coaxial connector according to claim 8, wherein: the diameter of the solder particles is larger than the minimum aperture of the V-shaped hole and smaller than the maximum aperture of the V-shaped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120411285.3U CN214505895U (en) | 2021-02-25 | 2021-02-25 | Airtight coaxial connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120411285.3U CN214505895U (en) | 2021-02-25 | 2021-02-25 | Airtight coaxial connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214505895U true CN214505895U (en) | 2021-10-26 |
Family
ID=78219430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120411285.3U Active CN214505895U (en) | 2021-02-25 | 2021-02-25 | Airtight coaxial connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214505895U (en) |
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2021
- 2021-02-25 CN CN202120411285.3U patent/CN214505895U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 177, Xinle Road, Dianshanhu Town, Kunshan City, Suzhou City, Jiangsu Province, 215000 Patentee after: Jiangsu Anshengda Aerospace Technology Co.,Ltd. Address before: 215000 28 Xinxing Road, Dianshanhu Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: KUNSHAN ADVANCED MICROWAVE TECHNOLOGIES CO.,LTD. |
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| CP03 | Change of name, title or address |