CN213845754U - High temperature resistant radio frequency coaxial connector - Google Patents
High temperature resistant radio frequency coaxial connector Download PDFInfo
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- CN213845754U CN213845754U CN202023244427.6U CN202023244427U CN213845754U CN 213845754 U CN213845754 U CN 213845754U CN 202023244427 U CN202023244427 U CN 202023244427U CN 213845754 U CN213845754 U CN 213845754U
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Abstract
The application relates to a high-temperature-resistant radio frequency coaxial connector, which comprises a first outer conductor, a first inner conductor, an insulator, a second outer conductor and a second inner conductor; the first inner conductor is limited in the first outer conductor through an insulator, the second inner conductor is arranged in the second outer conductor, the first inner conductor and the second inner conductor are connected through threads and then are subjected to laser welding, and the first outer conductor and the second outer conductor are subjected to laser welding after being pressed and assembled; the first outer conductor, the first inner conductor, the second outer conductor and the second inner conductor are all made of 310S stainless steel; the insulator is made of a modified ceramic material with high temperature resistance of over 1200 ℃, and the dielectric constant of the insulator is between 2.8 and 3.2. The connection structure of the inner conductor and the outer conductor has high strength and simpler assembly process, so that the connector is high in overall reliability and excellent in performance; and the connector can be used in a higher temperature environment (1000 ℃) and realizes higher-frequency signal transmission.
Description
Technical Field
The application belongs to the technical field of radio frequency coaxial connectors, and particularly relates to a high-temperature-resistant radio frequency coaxial connector.
Background
The prior high-temperature-resistant radio-frequency coaxial connector is shown in the attached figure 1. Wherein: a is a high-frequency sintered glass body, B is an inner conductor made of beryllium bronze, C is an outer conductor of the connector, the high-frequency sintered glass body of the connector is assembled with the inner conductor and then is subjected to laser welding, the connector is assembled with the outer conductor in a laser welding mode, the design frequency of the connector can meet the requirement of 18GHz, the beryllium bronze of the inner conductor has failure risk in a high-temperature state, and meanwhile, the maximum using temperature of the high-frequency sintered glass body is 550 ℃.
In addition, the existing high temperature resistant radio frequency coaxial connector insulator material of the existing high temperature resistant radio frequency coaxial connector usually selects PEI material, the service temperature is below 500 ℃, the service environment of 1000 ℃ can not be satisfied, meanwhile, the existing high temperature resistant radio frequency coaxial connector still has a complex structure, a heat insulation layer or a flame-proof plate is arranged outside the connector shell, and the problem of large processing difficulty is solved.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems in the background art, the application provides a novel high-temperature-resistant radio frequency coaxial connector; the technical scheme is as follows:
the high-temperature-resistant radio frequency coaxial connector comprises a first outer conductor, a first inner conductor, an insulator, a second outer conductor and a second inner conductor; the first inner conductor is limited in the first outer conductor through an insulator, the second inner conductor is arranged in the second outer conductor, the first outer conductor and the second outer conductor are subjected to laser welding after press fit, and the first inner conductor and the second inner conductor are subjected to laser welding after threaded connection.
As a further explanation of this application, the butt joint end of first outer conductor sets up the slot, integrated into one piece's pressure is joined in marriage to being provided with on the second outer conductor and is pressed the section, press and join in marriage the section and impress the slot, press and join in marriage the direction end of section with the butt joint terminal surface of first outer conductor closely laminates in order to play limiting displacement, the second outer conductor with laser welding between the flange rear end face of first outer conductor.
As a further explanation of the present application, the first outer conductor, the first inner conductor, the second outer conductor and the second inner conductor all use 310S stainless steel.
As a further explanation of the present application, a step surface is arranged on the first inner conductor, a limiting groove is arranged on the inner wall of the first outer conductor, the insulator is sleeved on the first inner conductor, the end surface of the insulator is limited at the step surface, and the outer side of the insulator is limited in the limiting groove.
As further explanation of the application, the insulator is made of a modified ceramic material which can resist high temperature of more than 1200 ℃, and the dielectric constant of the insulator is between 2.8 and 3.2.
Compared with the prior art, the method has the following beneficial technical effects:
(1) the application provides an inner and outer conductor's connection structure has higher intensity, and the assembling process is simpler for the connector overall reliability is high, and the performance is superior.
(2) The high temperature resistant connector that this application provided can use under higher temperature environment (1000 ℃), and realizes higher frequency signal transmission.
Drawings
Fig. 1 is a schematic overall structure diagram of a conventional high-temperature-resistant rf coaxial connector;
fig. 2 is a schematic view of an overall structure of the high-temperature-resistant rf coaxial connector provided in the present application.
Description of the reference numerals
The outer conductor comprises a first outer conductor 1, a slot 11, a limiting groove 12, a first inner conductor 2, a step surface 21, an insulator 3, a second inner conductor 4, a second outer conductor 5 and a press-fit section 51.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The technical solution of the present application will be explained with reference to specific embodiments.
Firstly, the technical requirements for providing the high-temperature-resistant radio frequency coaxial connector are as follows:
a. the use environment is as follows: working at 1000 deg.C for 30 min; missile-borne environment
b. Frequency of use: 18GHz
The conventional high-insulation-temperature-resistant material PEI and glass cannot meet the use environment of 1000 ℃, and in order to meet the technical requirements of the connector, the insulating material needs to be made of ceramic materials.
The special ceramic materials and modified ceramic materials which are commonly used are shown in table 1.
TABLE 1
In order to meet the requirements of temperature and frequency at the same time, the insulator material can meet the environment of 1000 ℃, and the dielectric constant is less than or equal to 4, so that the high-temperature-resistant modified ceramic material with the dielectric constant of 2.8-3.2 is preferably selected for the connector, the connector has higher cut-off frequency, high-frequency signal transmission is realized, and the problem that the common ceramic material cannot work at higher use frequency due to higher dielectric constant is solved.
As shown in fig. 2, the overall structure of the high-temperature rf coaxial connector provided by the present application is as follows:
it comprises a first outer conductor 1, a first inner conductor 2, an insulator 3, a second outer conductor 5 and a second inner conductor 4; the first inner conductor 2 is limited in the first outer conductor 1 through the insulator 3, the second inner conductor 4 is arranged in the second outer conductor 5, the first outer conductor 1 and the second outer conductor 5 are welded by laser after being pressed and assembled, and the first inner conductor 2 and the second inner conductor 4 are connected by threads and then welded by laser;
the connecting structure of the inner conductor and the outer conductor has high strength, and the connector is high in overall reliability and excellent in performance;
in addition, the connection form between the inner conductors can be suitable for the opposite insertion of a J-type connector and a K-type connector, namely the inner conductors of the two connectors are connected in a threaded manner, and the problems that the jack-type inner conductor fails in a high-temperature environment and signal transmission is unreliable can be solved.
Specifically, the following connection structure is adopted between the two outer conductors: the butt joint end of first outer conductor 1 sets up slot 11, and integrated into one piece is provided with on the second outer conductor 5 and presses the section 51, presses the section 51 slot 11 of impressing, presses the leading end of section 51 and the butt joint terminal surface of first outer conductor 1 closely to laminate in order to play limiting displacement, laser welding between the flange rear end face of second outer conductor 5 and first outer conductor 1.
For a radio frequency coaxial connector, a commonly used inner conductor material is copper alloy, but the inner conductor material needs to be selected again because the service temperature of the connector reaches 1000 ℃ and the copper alloy material can not meet the use requirement;
in order to meet the temperature requirement, the first outer conductor 1, the first inner conductor 2, the second outer conductor 5 and the second inner conductor 4 of the high-temperature-resistant radio-frequency coaxial connector all adopt 310S stainless steel, the 310S stainless steel has the characteristic of excellent high-temperature oxidation resistance, the high-temperature-resistant radio-frequency coaxial connector is suitable for manufacturing various furnace components, the maximum use temperature is 1200 ℃, the continuous use temperature is 1150 ℃, the temperature requirement can be met, however, due to the fact that the 310S stainless steel is not elastic, a common pinhole connection form is adopted, the risk of poor contact exists, and due to the fact that the inner conductors are connected through threads and then are subjected to laser welding, connection reliability is guaranteed, and high-frequency signal transmission is achieved.
Because the high temperature resistant material is all selected for use to conductor and insulator material in the high temperature resistant connector that this application provided, consequently the connector need not increase high temperature resistant sheet outward, and simple structure has solved the difficult problem of installation in less region.
In an implementation manner, the spacing structure among the first inner conductor 2, the insulator 3 and the first outer conductor 1 is as follows: the first inner conductor 2 is provided with a step surface 21, the inner wall of the first outer conductor 1 is provided with a limiting groove 12, the first inner conductor 2 is sleeved with the insulator 3, the end surface of the insulator 3 is limited at the step surface 21, and the outer side of the insulator 3 is limited in the limiting groove 12.
The application provides a high temperature resistant radio frequency coaxial connector's assembly process as follows: after the first inner conductor 2 is assembled with the insulator 3, the first inner conductor is connected with the second inner conductor 4 in a threaded mode and then is subjected to laser welding; the combination body is arranged into the first outer conductor 1 together, and the second outer conductor 5 is arranged into the first outer conductor 1 in a compression joint mode, so that the reliability of the integral assembly of the connector is guaranteed, and the performance is excellent.
The embodiments given above are preferable examples for implementing the present application, and the present application is not limited to the above-described embodiments. Any non-essential addition or replacement made by a person skilled in the art according to the technical features of the technical solution of the present application falls within the scope of the present application.
Claims (5)
1. A high-temperature-resistant radio-frequency coaxial connector is characterized by comprising a first outer conductor (1), a first inner conductor (2), an insulator (3), a second outer conductor (5) and a second inner conductor (4); the first inner conductor (2) is limited in the first outer conductor (1) through an insulator (3), the second inner conductor (4) is arranged in the second outer conductor (5), the first inner conductor (2) is connected with the second inner conductor (4) through threads and then is subjected to laser welding, and the first outer conductor (1) is connected with the second outer conductor (5) through press-fit laser welding.
2. The high-temperature-resistant radio-frequency coaxial connector according to claim 1, wherein a slot (11) is formed in a butt end of the first outer conductor (1), a press-fit section (51) is integrally formed on the second outer conductor (5), the press-fit section (51) is pressed into the slot (11), a guide end of the press-fit section (51) is tightly attached to a butt end face of the first outer conductor (1), and the second outer conductor (5) is laser-welded to a flange rear end face of the first outer conductor (1).
3. The high temperature resistant radio frequency coaxial connector according to claim 1, wherein the first outer conductor (1), the first inner conductor (2), the second outer conductor (5) and the second inner conductor (4) are all made of 310S stainless steel.
4. The high-temperature-resistant radio-frequency coaxial connector according to claim 1, wherein a step surface (21) is arranged on the first inner conductor (2), a limiting groove (12) is arranged on the inner wall of the first outer conductor (1), the insulator (3) is sleeved on the first inner conductor (2), the end surface of the insulator (3) is limited at the step surface (21), and the outer side of the insulator (3) is limited in the limiting groove (12).
5. The high-temperature-resistant radio-frequency coaxial connector according to claim 1 or 4, wherein the insulator (3) is made of a modified ceramic material with high temperature resistance of 1200 ℃ or higher, and the dielectric constant of the insulator (3) is 2.8-3.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023244427.6U CN213845754U (en) | 2020-12-29 | 2020-12-29 | High temperature resistant radio frequency coaxial connector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023244427.6U CN213845754U (en) | 2020-12-29 | 2020-12-29 | High temperature resistant radio frequency coaxial connector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323444A (en) * | 2021-12-07 | 2022-04-12 | 北京无线电计量测试研究所 | High-temperature-resistant sealed cavity testing device and configuration method |
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- 2020-12-29 CN CN202023244427.6U patent/CN213845754U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323444A (en) * | 2021-12-07 | 2022-04-12 | 北京无线电计量测试研究所 | High-temperature-resistant sealed cavity testing device and configuration method |
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