Glass sintering sealing radio frequency connector

Abstract

The invention belongs to the field of electronic engineering, and discloses a glass sintering sealing radio frequency connector, which is characterized in that an insulator sealing groove I for installing an insulator, an insulator step surface and a glass plug sealing groove I are arranged on the inner wall of a shell; an insulator sealing groove II and a mounting step are arranged on the outer wall of the insulator; the inner wall of the insulator is provided with a limiting cavity. The inner wall of the insulator is also provided with a jack step surface; the two insulator sealing grooves are sealed through a sealing ring I; a glass plug sealing groove II is formed in the outer wall of the glass plug, and the two glass plug sealing grooves are sealed through a sealing ring II; the diameter of the jack part of the jack is larger than that of the inner conductor part, and a jack step is formed between the jack part and the inner conductor part; limiting blocks are arranged on the outer walls of the inserting hole parts. The glass plug integrally sintered with the inner conductor is easy to replace, the whole radio frequency coaxial connector does not need to be scrapped after the inner conductor is damaged while the air tightness of the radio frequency connector is ensured, the inner conductor can be replaced when damaged, and the production, research and development cost of an enterprise is reduced.

Description

Technical Field

[0001] The invention belongs to the field of electronic engineering, in particular to a glass sintered sealed radio frequency connector. Background Art

[0002] Ordinary RF connectors use insulating materials such as plastic as insulating media, and the sealing between the plastic and the shell, and between the plastic and the lead wire is poor, which cannot meet the high airtightness requirements.

[0003] The relevant reference document CN202977920U discloses a hermetic RF coaxial connector, in which an insulator is arranged in a glass sintering assembly housing, a jack is arranged in the insulator, and the glass sintering assembly is sintered by a glass sintering assembly housing, glass and an inner conductor. When the current transmitted by the RF connector exceeds its rated value, the inner conductor in the form of a metal needle will be burned out, and it cannot be replaced after being burned out, and the entire RF connector will be scrapped. This will increase the cost of enterprises in production and research and development. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a glass sintered sealed radio frequency connector which improves air tightness and does not require the entire radio frequency coaxial connector to be scrapped after an inner conductor is damaged.

[0005] In order to solve the above technical problems, the present invention provides a glass sintered sealed radio frequency connector, comprising a shell, a jack, a glass plug and an insulator, the insulator and the glass plug are sequentially installed in the shell, the inner wall of the shell is provided with an insulator sealing groove I for installing the insulator, an insulator step surface and a glass plug sealing groove I; the outer wall of the insulator is provided with an insulator sealing groove II and an installation step, and the inner wall of the insulator is provided with a limit cavity; the inner wall of the insulator is also provided with a jack step surface for installing the jack; the insulator sealing groove I and the insulator sealing groove II are sealed and connected by a sealing ring I; the outer wall of the glass plug is provided with a glass plug sealing groove II, and the glass plug sealing groove I and the glass plug sealing groove II are sealed and connected by a sealing ring II; the jack consists of a jack part and an inner conductor part, the diameter of the jack part is larger than that of the inner conductor part; a jack step is formed between the jack part and the inner conductor part; and a limit block is provided on the outer wall of the jack part.

[0006] By adopting the above technical solution, the glass plug and the shell are formed into an airtight structure in the form of a sealing groove and a sealing ring. The structure is simple, easy to use, and easy to replace. While ensuring the airtightness of the RF connector, the entire RF coaxial connector does not need to be scrapped after the inner conductor is damaged, so that the inner conductor can be replaced when damaged, reducing the cost of production and research and development of the enterprise. The airtight structure can prevent internal gas leakage or external gas intrusion, and maintain the stability of the internal environment of the RF connector, which is of great significance for ensuring the stable transmission of RF signals and reducing signal attenuation. In addition, the airtight structure is easy to manufacture, effectively reducing the manufacturing cost.

[0007] Preferably, the limiting cavity consists of an introduction part and a limiting part, and the limiting block enters the limiting part from the introduction part.

[0008] By adopting the above technical solution, the existence of the introduction part provides a gradual transition space for the limit block, so that the limit block can enter the limit part more easily and accurately. This design reduces the difficulty and complexity of the installation process and improves the installation efficiency. After the limit block enters the limit part from the introduction part, the limit block will be firmly fixed in the limit cavity, thereby enhancing the connection stability between the jack and the insulator.

[0009] Preferably, the inner conductor portion port is provided with an inner chamfer to facilitate insertion of the inner conductor.

[0010] By adopting the above technical solution, the design of the inner chamfer makes the port edge of the jack smoother, reduces the friction and resistance of the inner conductor during the insertion process, makes the plugging and unplugging operation easier and more convenient, reduces the difficulty of plugging and unplugging, and improves work efficiency.

[0011] Preferably, a disassembly portion is provided at the outer end of the glass stopper, and a disassembly hole is provided on the disassembly portion.

[0012] By adopting the above technical solution, the setting of the disassembly and assembly part provides a clear operation area, making the disassembly and assembly process more intuitive and convenient, improving the disassembly and assembly efficiency, and reducing the risk of damage caused by improper operation.

[0013] Preferably, the glass plug, the disassembly portion and the inner conductor are sintered into an integral body.

[0014] By adopting the above technical solution, the glass insulating medium will gradually transform from a solid state to a molten state under high temperature conditions, and after being fully infiltrated with the inner conductor, the temperature will be cooled at a relatively low rate. After slowly reaching room temperature, the glass plug, the disassembly and assembly part, and the inner conductor are combined together, thereby having relatively good airtightness and stability. Because glass is more resistant and stable than general plastics. Therefore, the glass sintered sealed RF connector of the present invention has higher stability under high vibration, frequent temperature changes, and high temperature conditions.

[0015] Preferably, the number of the glass stopper sealing grooves I is 2-4.

[0016] By adopting the above technical solution, the design of multiple sealing grooves can provide more sealing points, thereby enhancing the overall sealing performance of the RF connector.

[0017] Preferably, the number of the glass stopper sealing grooves II is 2-4.

[0018] By adopting the above technical solution, the design of multiple sealing grooves can provide more sealing points and enhance the overall sealing performance of the RF connector. The sealing groove and the sealing ring can ensure the tight connection between the various components of the connector, prevent impurities such as liquid, gas or dust from entering the connector, ensure the airtightness and waterproof performance of the connector, and prevent loosening or falling off during use, which helps to maintain the stability and reliability of the RF connector during long-term use and reduce signal loss or failure caused by poor connection.

[0019] Preferably, a silicon carbide layer is sprayed on the outer surface of the shell, and the shell after spraying is placed in a heating furnace and subjected to silicon carbide treatment at 1400-1600°C.

[0020] By adopting the above technical solution, the silicon carbide coating increases the wear resistance and corrosion resistance of the shell. In harsh operating environments, such as when there are factors such as wear and corrosion, the silicon carbide coating can provide effective protection for the RF connector and extend its service life.

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts a sealing groove and a sealing ring to form an airtight structure between the glass plug and the shell. The structure is simple, easy to use, and easy to replace. While ensuring the airtightness of the RF connector, the entire RF coaxial connector does not need to be scrapped after the inner conductor is damaged, so that the inner conductor can be replaced when damaged, reducing the cost of production and research and development of enterprises. The airtight structure can prevent internal gas leakage or external gas intrusion, and maintain the stability of the internal environment of the RF connector, which is of great significance for ensuring the stable transmission of RF signals and reducing signal attenuation. In addition, the airtight structure is easy to manufacture, effectively reducing the manufacturing cost.

[0022] 2. The insulator and the housing of the present invention are sealed and connected in the form of a sealing groove and a sealing ring, which further improves the air tightness of the RF connector.

[0023] 3. The inner wall of the housing of the present invention is provided with an insulator step surface for installing the insulator. The step form simplifies the installation process of the insulator, reduces the installation difficulty, improves the installation efficiency, and reduces the failure rate caused by improper installation.

[0024] 4. The inner wall of the insulator of the present invention is provided with a jack step surface for installing the jack, the jack is composed of a jack part and an inner conductor part, the diameter of the jack part is larger than the inner conductor part, a jack step is formed between the jack part and the inner conductor part, a limit block is provided on the outer wall of the jack part, and the design of the step plus the limit block enhances the stability of the jack installation, prevents the jack from displacement or deformation when subjected to external force, ensures closer contact between the jack and the insulator, helps to reduce signal reflection and attenuation, improves the electrical performance of the RF connector, and ensures stable signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a stereogram of the present invention; Figure 2 It is a cutaway view of the present invention; Figure 3 This is a structural diagram of the insulator of the present invention; Figure 4 A schematic diagram of a limit cavity provided on an insulator of the present invention; Figure 5 This is a structural diagram of the jack of the present invention; Figure 6 This is a structural diagram of the glass stopper of the present invention; Figure 7 This is a schematic diagram of a silicon carbide layer disposed outside the shell of the present invention.

[0026] Figure numbers: 1. Shell, 2. Socket, 3. Glass plug, 4. Insulator, 5. Insulator sealing groove I, 6. Glass plug sealing groove I, 7. Insulator sealing groove II, 8. Installation step, 9. Limiting cavity, 10. Socket step surface, 11. Sealing ring I, 12. Glass plug sealing groove II, 13. Sealing ring II, 14. Socket part, 15. Inner conductor part, 16. Socket step, 17. Limiting block, 18. Silicon carbide layer, 19. Introduction part, 20. Limiting part, 21. Inner chamfer, 22. Insulator step surface, 23. Disassembly part, 24. Disassembly hole, 25. Inner conductor. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings. Example 1

[0028] like Figure 1 , 2 As shown, the glass sintered sealed RF connector includes a housing 1, a jack 2, a glass plug 3 and an insulator 4, wherein the insulator 4 and the glass plug 3 are sequentially installed in the housing 1. The housing 1 is made of metal. The inner wall of the housing 1 is provided with an insulator sealing groove Ⅰ5 for installing the insulator 4, an insulator step surface 22 and a glass plug sealing groove Ⅰ6. The inner wall of the housing 1 is provided with an insulator step surface 22 for installing the insulator 4. The step form simplifies the installation process of the insulator, reduces the installation difficulty, improves the installation efficiency, and reduces the failure rate caused by improper installation. After the insulator 4 and the housing 1 are assembled, the end faces of the two are tightly fitted together.

[0029] like Figure 3As shown, the outer wall of the insulator 4 is provided with an insulator sealing groove II7 and a mounting step 8. The insulator 4 and the housing 1 are sealed in the form of a sealing groove and a sealing ring, which further improves the air tightness of the RF connector and ensures the stability of the internal environment of the RF connector. The inner wall of the insulator 4 is also provided with a jack step surface 10 for mounting the jack 2; the insulator sealing groove I5 and the insulator sealing groove II7 are sealed and connected by a sealing ring I11.

[0030] like Figure 4 As shown, a limiting cavity 9 is provided on the inner wall of the insulator 4; the limiting cavity 9 is composed of an introduction portion 19 and a limiting portion 20, and the introduction portion is perpendicular to the limiting portion 20. The limiting block 17 enters the limiting portion 20 from the introduction portion 19. The existence of the introduction portion 19 provides a gradual transition space for the limiting block 17, so that the limiting block 17 can enter the limiting portion 20 more easily and accurately. This design reduces the difficulty and complexity of the installation process and improves the installation efficiency. Once the limiting block 17 enters the limiting portion 20 from the introduction portion 19, it will be firmly fixed in the limiting cavity 9, thereby enhancing the connection stability between the jack 2 and the insulator 4.

[0031] like Figure 5 As shown, the jack 2 is composed of a jack portion 14 and an inner conductor portion 15, the diameter of the jack portion 14 is larger than the inner conductor portion 15; a jack step 16 is formed between the jack portion 14 and the inner conductor portion 15; and a stopper 17 is provided on the outer wall of the jack portion 14. A jack step surface 10 for mounting the jack 2 is provided on the inner wall of the insulator 4. The jack 2 is composed of a jack portion 14 and an inner conductor portion 15, the diameter of the jack portion 14 is larger than the inner conductor portion 15, a jack step 16 is formed between the jack portion 14 and the inner conductor portion 15, and a stopper 17 is provided on the outer wall of the jack portion 14. The design of the step plus the stopper enhances the stability of the installation of the jack 2, prevents the jack 2 from being displaced or deformed when subjected to external force, ensures a closer contact between the jack 2 and the insulator 4, helps to reduce the reflection and attenuation of the signal, improves the electrical performance of the RF connector, and ensures the stable transmission of the signal. The port of the inner conductor portion 15 is provided with an inner chamfer 21 for facilitating the insertion of the inner conductor. The design of the inner chamfer 21 makes the port edge of the jack smoother, reduces the friction and resistance of the inner conductor during the insertion process, makes the plugging and unplugging operation easier and more convenient, reduces the difficulty of plugging and unplugging, and improves work efficiency.

[0032] like Figure 6As shown, the outer wall of the glass stopper 3 is provided with a glass stopper sealing groove II12, and the glass stopper sealing groove I6 and the glass stopper sealing groove II12 are sealed and connected by a sealing ring II13. A disassembly portion 23 is provided at the outer end of the glass stopper 3, and a disassembly hole 24 is provided on the disassembly portion 23. The disassembly portion 23 provides a clear operation area, making the disassembly process more intuitive and convenient. The disassembly hole 24 can be easily disassembled and assembled using special pliers without excessive effort or skills, thereby improving the disassembly efficiency and reducing the risk of damage caused by improper operation.

[0033] The glass plug 3, the disassembly and assembly part 23 and the inner conductor 25 are integrally sintered. The inner conductor 25 is made of metal. During the production process, high-temperature purification, annealing, oxidation and other processes are used to improve the wettability of metal parts and glass insulating media. The glass insulating medium will gradually transform from a solid state to a molten state under high temperature conditions, and after being fully infiltrated with the inner conductor 25, it will be cooled at a relatively low rate. After slowly reaching room temperature, the glass plug 3, the disassembly and assembly part 23, and the inner conductor 25 are combined together, thereby having relatively good airtightness and stability. Because glass is more resistant and stable than general plastics. Therefore, the glass sintered sealed RF connector of the present invention has higher stability under high vibration, frequent temperature changes and high temperature conditions.

[0034] The number of the glass plug sealing grooves Ⅰ 6 is 2 to 4. The design of multiple sealing grooves can provide more sealing points, thereby enhancing the overall sealing performance of the RF connector.

[0035] The number of glass stopper sealing grooves II12 is 2-4. After the housing 1 and the glass stopper 3 are sealed and connected, the end faces of the two fit tightly together. The design of multiple sealing grooves can provide more sealing points, thereby enhancing the overall sealing performance of the RF connector. The sealing grooves and the sealing rings can ensure a tight connection between the various components of the connector, prevent impurities such as liquids, gases or dust from entering the interior of the connector, ensure the air tightness and waterproof performance of the connector, and prevent loosening or falling off during use, which helps to maintain the stability and reliability of the RF connector during long-term use and reduce signal loss or failures caused by poor connection.

[0036] During assembly, the insulator 4 is installed in the housing 1, the insulator step surface 22 and the installation step 8 are fitted, and the insulator sealing groove I5 and the insulator sealing groove II7 are sealed by the sealing ring I11. Then the glass plug 3 with the inner conductor 25 sintered integrally is installed. The glass plug sealing groove I6 and the glass plug sealing groove II12 are sealed by the sealing ring II13. Finally, the jack 2 is installed in the insulator 4, the limit block 17 enters the limit part 20 along the introduction part 19, the jack step 16 and the jack step surface 10 are fitted, and after installation, the jack 2 and the fitting surface of the insulator 4 are tightly fitted together, and the inner conductor part 15 and the inner conductor 25 are reliably in contact.

[0037] This application uses glass instead of ordinary plastic as an insulating medium, which significantly improves the airtightness and stability of the RF connector while ensuring high-frequency performance. The glass plug 3 and the shell 1 use a sealing groove and a sealing ring to form an airtight structure. The structure is simple, easy to use, and easy to replace. While ensuring the airtightness of the RF connector, the entire RF coaxial connector does not need to be scrapped after the inner conductor is damaged, so that the inner conductor can be replaced when damaged, reducing the cost of production and research and development of the enterprise. The airtight structure can prevent internal gas leakage or external gas intrusion, and maintain the stability of the internal environment of the RF connector, which is of great significance for ensuring the stable transmission of RF signals and reducing signal attenuation. In addition, the airtight structure is easy to manufacture and effectively reduces manufacturing costs.

[0038] The glass sintered sealed RF connector of this application has a minimum leakage rate of 1×10 -12 Pa·m³, much lower than the industry's 1×10 -9 The leakage rate requirement of Pa·m³ is higher than that of general plastic medium RF connectors in high vibration, frequent temperature changes and high temperature conditions. Example 2

[0039] like Figure 1 , 2 As shown, the glass sintered sealed RF connector includes a housing 1, a jack 2, a glass plug 3 and an insulator 4, wherein the insulator 4 and the glass plug 3 are sequentially installed in the housing 1. The inner wall of the housing 1 is provided with an insulator sealing groove Ⅰ5 for installing the insulator 4, an insulator step surface 22 and a glass plug sealing groove Ⅰ6. Figure 3 As shown, the outer wall of the insulator 4 is provided with an insulator sealing groove II7 and an installation step 8. The inner wall of the insulator 4 is also provided with a plug step surface 10 for installing the plug hole 2; the insulator sealing groove I5 and the insulator sealing groove II7 are sealed and connected by a sealing ring I11; the outer wall of the glass plug 3 is provided with a glass plug sealing groove II12, and the glass plug sealing groove I6 and the glass plug sealing groove II12 are sealed and connected by a sealing ring II13; the plug hole 2 is composed of a plug hole part 14 and an inner conductor part 15, and the diameter of the plug hole part 14 is larger than that of the inner conductor part 15; a plug hole step 16 is formed between the plug hole part 14 and the inner conductor part 15; and a limit block 17 is provided on the outer wall of the plug hole part 14.

[0040] like Figure 4 As shown, a limiting cavity 9 is provided on the inner wall of the insulator 4. The limiting cavity 9 is composed of an introduction portion 19 and a limiting portion 20, and the introduction portion 19 is perpendicular to the limiting portion 20. After the limiting block 17 enters the limiting portion 20 from the introduction portion 19, the limiting block 17 is firmly fixed in the limiting cavity 9.

[0041] like Figure 5As shown, the inner conductor portion 15 is provided with an inner chamfer 21 for facilitating the insertion of the inner conductor. The outer end of the glass plug 3 is provided with a disassembly portion 23, and a disassembly hole 24 is provided on the disassembly portion 23. Figure 6 As shown, the glass plug 3, the disassembly and assembly part 23 and the inner conductor 25 are integrally sintered. The number of the glass plug sealing grooves I6 is 2-4. The number of the glass plug sealing grooves II12 is 2-4. After the housing 1 and the glass plug 3 are sealed and connected, the end faces of the two are tightly fitted together. The housing 1 and the inner conductor 25 are both made of metal.

[0042] like Figure 7 As shown, a silicon carbide layer 18 is sprayed on the outer surface of the housing 1, and the housing 1 after spraying is placed in a heating furnace and subjected to silicon carbide treatment at 1400-1600°C. The silicon carbide coating 18 increases the wear resistance and corrosion resistance of the housing 1. In harsh use environments, such as when there are factors such as wear and corrosion, the silicon carbide coating can provide effective protection for the RF connector and extend its service life.

[0043] During assembly, the insulator 4 is installed in the housing 1 with the silicon carbide layer 18, the insulator step surface 22 and the installation step 8 are fitted, and the insulator sealing groove I5 and the insulator sealing groove II7 are sealed by the sealing ring I11. Then the glass plug 3 with the inner conductor 25 sintered integrally is installed. The glass plug sealing groove I6 and the glass plug sealing groove II12 are sealed by the sealing ring II13. Finally, the jack 2 is installed in the insulator 4, the limit block 17 enters the limit part 20 along the introduction part 19, the jack step 16 and the jack step surface 10 are fitted, and after installation, the jack 2 and the fitting surface of the insulator 4 are tightly fitted together, and the inner conductor part 15 and the inner conductor 25 are reliably in contact.

[0044] The glass plug 3 of the present application and the shell 1 with the silicon carbide layer 18 are formed into an airtight structure in the form of a sealing groove and a sealing ring. The structure is simple, easy to use, and easy to replace. While ensuring the airtightness of the RF connector, the entire RF coaxial connector does not need to be scrapped after the inner conductor is damaged, so that the inner conductor can be replaced when damaged, reducing the cost of production and research and development of the enterprise. The glass sintered sealed RF connector of the present application has a minimum leakage rate of 1×10 -12 Pa·m³, much lower than the industry's 1×10 -9 The requirement of leakage rate of Pa·m³ is met. Its stability under high vibration, frequent temperature changes and high temperature is much higher than that of RF connectors with general plastic dielectrics. The outer surface of the shell 1 is sprayed with a silicon carbide layer 18, which increases the hardness, wear resistance and corrosion resistance of the shell 1 and prolongs the service life of the RF connector.

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

Claims

1. A glass sintered sealed radio frequency connector, comprising a housing (1), a jack (2), a glass plug (3) and an insulator (4), wherein the insulator (4) and the glass plug (3) are sequentially installed in the housing (1), and characterized in that: The inner wall of the housing (1) is provided with an insulator sealing groove I (5) for installing the insulator (4), an insulator step surface (22) and a glass plug sealing groove I (6); the outer wall of the insulator (4) is provided with an insulator sealing groove II (7) and a mounting step (8), and the inner wall of the insulator (4) is provided with a limit cavity (9); the inner wall of the insulator (4) is also provided with a socket step surface (10) for installing the socket (2); the insulator sealing groove I (5) and the insulator sealing groove II (7) are sealed by a sealing ring I (11). The glass plug (3) is connected; a glass plug sealing groove II (12) is provided on the outer wall of the glass plug (3); the glass plug sealing groove I (6) and the glass plug sealing groove II (12) are sealed and connected via a sealing ring II (13); the jack (2) is composed of a jack portion (14) and an inner conductor portion (15); the jack portion (14) has a diameter larger than the inner conductor portion (15); a jack step (16) is formed between the jack portion (14) and the inner conductor portion (15); and a limit block (17) is provided on the outer wall of the jack portion (14).

2. The glass sintered sealed radio frequency connector according to claim 1, characterized in that: The limiting cavity (9) is composed of an introduction portion (19) and a limiting portion (20), and the limiting block (17) enters the limiting portion (20) from the introduction portion (19).

3. The glass sintered sealed radio frequency connector according to claim 1, characterized in that: The port of the inner conductor portion (15) is provided with an inner chamfer (21) for facilitating the insertion of the inner conductor.

4. The glass sintered sealed radio frequency connector according to claim 1, characterized in that: The outer end of the glass stopper (3) is provided with a disassembly portion (23), and the disassembly portion (23) is provided with a disassembly hole (24).

5. The glass sintered sealed radio frequency connector according to claim 4, characterized in that: The glass stopper (3), the disassembly portion (23) and the inner conductor (25) are integrally sintered.

6. The glass sintered sealed radio frequency connector according to claim 1, characterized in that: The number of the glass stopper sealing grooves Ⅰ (6) is 2-4.

7. The glass sintered sealed radio frequency connector according to claim 1, characterized in that: The number of the glass stopper sealing grooves II (12) is 2-4.

8. The glass sintered sealed radio frequency connector according to claim 1, characterized in that: The outer surface of the shell (1) is sprayed with a silicon carbide layer (18), and the sprayed shell (1) is placed in a heating furnace and subjected to a silicon carbide treatment at a temperature of 1400-1600°C.

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