Rectangular coaxial adapter with filtering function
By introducing filtering and anti-loosening devices into the coaxial adapter, the problem of the lack of filtering function in the coaxial adapter is solved, achieving efficient signal filtering and connection stability, and meeting the performance requirements of aerospace projects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XIAN HUAYUE MICROWAVE TECH CO LTD
- Filing Date
- 2026-03-05
- Publication Date
- 2026-05-08
AI Technical Summary
Existing coaxial adapters lack filtering capabilities, resulting in substandard signal interference performance in aerospace projects. Furthermore, there are no coaxial adapters with filtering capabilities on the market, which increases weight and size and is not conducive to user operation.
A rectangular coaxial adapter with filtering function was designed. By installing a filtering device and an anti-loosening device inside the conductor, and using a resonant rod to form a filtering barrier and stopband, high-frequency interference signals are attenuated. Clamping springs and inclined clamping rings prevent the connector from loosening.
It achieves low-loss, low-reflection signal transmission, improves filtering accuracy and safety, avoids loose connectors, and has a lightweight structure that is easy to install and debug.
Smart Images
Figure CN122000740A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of coaxial adapter technology, and particularly relates to a rectangular coaxial adapter with filtering function. Background Technology
[0002] A coaxial adapter is a microwave device used for signal transmission matching between different transmission lines / interfaces. Its core application is to connect a rectangular waveguide to a coaxial transmission line, ensuring low loss, low reflection, and interference resistance during mode conversion (TE10 mode → TEM mode).
[0003] Due to signal interference, the performance indicators of a key aerospace project failed to meet expectations, and the overall performance of the system did not meet design requirements. The coaxial adapter could not be replaced, and there were no coaxial adapters with filtering functions on the market. Instead, a special filter had to be used to filter out noise. For the spaceborne project, this not only increased the weight and size but also made it inconvenient for users. To address this, we proposed a rectangular coaxial adapter with filtering function to solve the problem of the lack of filtering function in existing equipment. Summary of the Invention
[0004] To achieve the above objectives, the present invention adopts the following technical solution: A rectangular coaxial adapter with filtering function includes a housing. A conductor is slidably mounted inside the housing, and bushings are provided at both ends of the conductor. A through-hole is formed on the side wall of each bushing, and a contact head sleeve is provided on one side of the through-hole. The bushings and contact head sleeve are slidably mounted inside the housing. A connection hole is formed inside the contact head sleeve, and an insulating sleeve is slidably mounted inside the connection hole. An output conductor rod and an input conductor rod are fixedly mounted on the side wall of the conductor, and the output and input conductor rods are slidably mounted inside the through-hole and connection hole. The insulating sleeve is slidably mounted on the side wall of the output and input conductor rods, and a pin groove is formed on the side wall of the conductor. A pin rod is fixedly mounted on the side wall of the bushing, and the pin rod is slidably connected to the pin groove. A filtering device is provided on one side of the input conductor rod for frequency filtering of the transmitted signal. An anti-loosening device is provided on one side of the contact head sleeve to prevent the connector from becoming loose.
[0005] First, the conductors are installed inside the housing. Then, the insulating sleeves are placed on the output and input conductor rods. Next, the bushings and contact heads are placed on the outside of the output and input conductor rods. At this point, the pins on the side wall of the bushings will be inserted into the pin slots. The cooperation between the pin slots and the pins completes the limiting and supporting work of the conductors inside the housing. After that, the equipment can be connected. The insulating sleeves can limit and support the output and input conductor rods, ensuring that the housing and the input conductor rods are at the axis of the connection hole. Its structure is lightweight, easy to disassemble and install, does not require welding, and is convenient for installation and debugging.
[0006] During installation, the resonant rod can be inserted into the sleeve. The input conductor rod passes through the annular groove of the resonant rod, which forms a filtering barrier. For high-frequency interference signals above the passband limit, such as adjacent channel communication signals and harmonic noise, the resonant rod forms a stopband through its own resonance characteristics, attenuating these signals in advance. The attenuation can reach 30-50dB, preventing the transmitted signal from superimposing on the target signal. In addition, the annular groove can enhance electromagnetic coupling and improve filtering accuracy.
[0007] During the connection process, the connectors at both ends of the input and output conductor rods are first inserted into the anti-loosening sleeve. Then, the connectors slide along the inclined surface of the T-shaped groove, pushing the T-shaped inclined clamping ring to compress the clamping spring and rise. After the connection is completed, the clamping spring pushes the T-shaped inclined clamping ring down to press the connector in the anti-loosening sleeve, forming a pressing anti-loosening mechanism to prevent the connector from becoming loose and improve safety during use.
[0008] Preferably, the filtering device includes a filter sleeve disposed on one side of the input conductor rod, and the filter sleeve is fixedly installed on the side wall of the contact head sleeve. A sleeve is fixedly installed on the side wall of the filter sleeve, and a resonant rod is slidably installed inside the sleeve. An annular groove is formed on the side wall of the resonant rod, and the input conductor rod is slidably installed inside the annular groove. During installation, the resonant rod can be inserted into the sleeve. During installation, the input conductor rod passes through the annular groove of the resonant rod. At this time, the resonant rod will form a certain filtering barrier. For high-frequency interference signals above the passband upper limit, such as adjacent channel communication signals and harmonic noise, the resonant rod forms a stopband through its own resonance characteristics, which attenuates these signals in advance, so that the attenuation can reach 30-50dB, avoiding the superposition of the transmitted signal and the target signal. In addition, the annular groove can enhance electromagnetic coupling and improve filtering accuracy.
[0009] Preferably, the anti-loosening device includes an anti-loosening sleeve fixedly installed on the side wall of the contact head sleeve, and the anti-loosening sleeve has a T-shaped groove inside. A T-shaped inclined clamping ring is slidably installed on the inner wall of the T-shaped groove, and a clamping spring is provided above the T-shaped inclined clamping ring. An adjustment device is provided above the clamping spring, and a protective device is provided on one side of the anti-loosening sleeve. When the connection is made, the connectors at both ends of the input and output conductor rods are first inserted into the anti-loosening sleeve. Then, the connectors slide along the inclined surface of the T-shaped groove, pushing the T-shaped inclined clamping ring to squeeze the clamping spring upward. After the connection is completed, the clamping spring pushes the T-shaped inclined clamping ring downward to press the connector in the anti-loosening sleeve, forming a pressing anti-loosening mechanism to prevent the connector from loosening and improve safety during use.
[0010] Preferably, the adjusting device includes a connecting ring groove formed on the top surface of the T-shaped slide groove, and an adjusting nut is rotatably installed inside the connecting ring groove. The bottom end of the adjusting nut has an adjusting thread groove, and a threaded rod is threadedly installed inside the adjusting thread groove. An adjusting plate is fixedly installed on the bottom surface of the threaded rod. According to the usage requirements, the adjusting nut can be rotated. Through the cooperation of the adjusting plate and the threaded rod, the adjusting nut will push the threaded rod and the adjusting plate connected by the adjusting thread groove to move down. In turn, the adjusting plate will squeeze the T-shaped slide groove, adjust the elasticity of the T-shaped slide groove, increase the pressing force, and use the T-shaped inclined clamping ring to press and fix more firmly and stably, improving the safety of use.
[0011] Preferably, the protective device includes a T-shaped threaded groove formed on the side wall of the anti-loosening sleeve, and a T-shaped threaded ring is installed inside the T-shaped threaded groove. A support ring is fixedly installed at one end of the T-shaped threaded ring, and an elastic ring is fixedly installed on the inner wall of the support ring. After the connection is completed, the support ring can be rotated. Through the cooperation between the T-shaped threaded ring and the T-shaped threaded groove, the support ring will rotate and move outward, thereby forming a support drag ring to prevent the wire end of the connector from becoming loose or bent, which would affect the data transmission.
[0012] Preferably, a protective insulating pad is provided below the T-shaped inclined clamping ring, and the protective insulating pad is fixedly installed on the bottom surface of the T-shaped inclined clamping ring; by providing a protective insulating pad, the protective insulating pad can prevent the bottom surface of the T-shaped inclined clamping ring from scratching the surface of the connector.
[0013] Preferably, the sidewalls of the support ring and the adjusting thread groove are provided with strip grooves; by providing strip grooves and anti-slip grooves, the strip grooves can improve the roughness of the sidewalls of the support ring and the adjusting nut, increase the friction, and facilitate the rotation of the support ring and the adjusting nut.
[0014] Preferably, the insulating sleeve is made of polytetrafluoroethylene (PTFE), and the above-mentioned devices are all made of beryllium bronze with a coating on the surface. PTFE has good electrical properties and certain strength, which can meet the requirements for electrical performance and operating temperature. Beryllium bronze has good conductivity, strength, hardness, elastic limit and fatigue limit. Selecting beryllium bronze can meet the requirements of low contact resistance and 500 mating durability. The coating can enhance environmental adaptability, electrical contact and durability.
[0015] Preferably, the bottom surface of the protective insulating pad is provided with anti-slip grooves; the anti-slip grooves can improve the roughness of the bottom surface of the protective insulating pad, which can increase the friction while avoiding scratching the connector, making it easier to press and fix the connector.
[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. First, install the conductors inside the housing. Then, place the insulating sleeves on the output and input conductor rods. Next, place the bushings and contact heads on the outside of the output and input conductor rods. At this point, the pins on the sidewalls of the bushings will insert into the pin slots. The cooperation between the pin slots and the pins completes the limiting and supporting work of the conductors inside the housing. After that, the equipment can be connected. The insulating sleeves can limit and support the output and input conductor rods, ensuring that the housing and the input conductor rods are at the axis of the connection hole. Its structure is lightweight, easy to disassemble and install, does not require welding, and is convenient for installation and debugging.
[0017] 2. During installation, the resonant rod can be inserted into the sleeve. During installation, the input conductor rod will pass through the annular groove of the resonant rod. At this time, the resonant rod will form a certain filtering barrier. For high-frequency interference signals above the passband limit, such as adjacent channel communication signals and harmonic noise, the resonant rod forms a stopband through its own resonance characteristics, which attenuates these signals in advance, so that the attenuation can reach 30-50dB, preventing the transmitted signal from superimposing on the target signal. In addition, the annular groove can enhance electromagnetic coupling and improve filtering accuracy.
[0018] 3. During the connection process, the connectors at both ends of the input and output conductor rods are first inserted into the anti-loosening sleeve. Then, the connectors slide along the inclined surface of the T-shaped groove, pushing the T-shaped inclined clamping ring to squeeze the clamping spring upward. After the connection is completed, the clamping spring pushes the T-shaped inclined clamping ring downward to press the connector in the anti-loosening sleeve, forming a pressing anti-loosening mechanism to prevent the connector from becoming loose and improve safety during use. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention. Figure 1 ; Figure 3 This is a cross-sectional view of the overall structure of the present invention. Figure 2 ; Figure 4 for Figure 3 An enlarged schematic diagram of section A in the middle; Figure 5 This is an exploded cross-sectional view of the overall structure of the present invention. Figure 3 ; Figure 6 for Figure 5 Enlarged structural diagram of section B in the middle; Figure 7 This is a cross-sectional view of the overall structure of the present invention. Figure 4 ; Figure 8 for Figure 7 Enlarged structural diagram of section C.
[0022] In the diagram: 1. Housing; 2. Conductor; 3. Bushing; 4. Through hole; 5. Contact head sleeve; 6. Connecting hole; 7. Output conductor rod; 8. Input conductor rod; 9. Pin slot; 10. Pin rod; 11. Insulating sleeve; 12. Filter sleeve; 13. Sleeve; 14. Resonant rod; 15. Annular groove; 16. T-shaped slide groove; 17. T-shaped inclined clamping ring; 18. Clamping spring; 19. Connecting ring groove; 20. Adjusting nut; 21. Adjusting thread groove; 22. Threaded rod; 23. Adjusting plate; 24. Protective insulating pad; 25. Anti-slip groove; 26. T-shaped thread groove; 27. T-shaped threaded ring; 28. Support ring; 29. Strip groove; 30. Elastic ring; 31. Anti-loosening sleeve. Detailed Implementation
[0023] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.
[0024] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0026] Reference Figure 1 - Figure 8 This invention provides a rectangular coaxial adapter with filtering function, including a housing 1. A conductor 2 is slidably installed inside the housing 1, and bushings 3 are provided at both ends of the conductor 2. A through hole 4 is opened on the side wall of the bushing 3, and a contact head sleeve 5 is provided on one side of the through hole 4. The bushing 3 and the contact head sleeve 5 are slidably installed inside the housing 1, and a connection hole 6 is opened inside the contact head sleeve 5. An insulating sleeve 11 is slidably installed inside the connection hole 6. An output conductor rod 7 and an input conductor rod 8 are fixedly installed on the side wall of the conductor 2, and the output conductor rod 7 and the input conductor rod 8 are slidably installed inside the through hole 4 and the connection hole 6. The insulating sleeve 11 is slidably installed on the side wall of the output conductor rod 7 and the input conductor rod 8. A pin groove 9 is opened on the side wall of the conductor 2. A pin rod 10 is fixedly installed on the side wall of the bushing 3, and the pin rod 10 is slidably connected to the pin groove 9. A filtering device is provided on one side of the input conductor rod 8. The filtering device is used for frequency filtering of the transmitted signal, and an anti-loosening device is provided on one side of the contact head sleeve 5 to prevent the connector from becoming loose.
[0027] In this embodiment, conductor 2 is first installed inside housing 1, and then insulating sleeve 11 is fitted onto output conductor rod 7 and input conductor rod 8. Next, bushing 3 and contact head sleeve 5 are fitted onto the outside of output conductor rod 7 and input conductor rod 8. At this time, the pin rod 10 on the side wall of bushing 3 will be inserted into pin groove 9. The cooperation between pin groove 9 and pin rod 10 can complete the limiting support work of conductor 2 inside housing 1. Then the equipment can be connected. Insulating sleeve 11 can limit and support output conductor rod 7 and input conductor rod 8, ensuring that housing 1 and input conductor rod 8 are at the axis of connection hole 6. Its structure is lightweight, easy to disassemble and install, does not require welding, and is convenient for installation and debugging.
[0028] During installation, the resonant rod 14 can be inserted into the sleeve 13. During installation, the input conductor rod 8 passes through the annular groove 15 of the resonant rod 14. At this time, the resonant rod 14 will form a certain filtering barrier. For high-frequency interference signals above the passband limit, such as adjacent channel communication signals and harmonic noise, the resonant rod 14 forms a stopband through its own resonance characteristics, which attenuates these signals in advance, so that the attenuation can reach 30-50dB, avoiding the superposition of the transmitted signal and the target signal. In addition, the annular groove 15 can enhance electromagnetic coupling and improve filtering accuracy.
[0029] During the connection process, the connectors at both ends of the output conductor rod 7 and the input conductor rod 8 are first inserted into the anti-loosening sleeve 31. Then, the connectors slide along the inclined surface of the T-shaped groove 16, pushing the T-shaped inclined clamping ring 17 to compress the clamping spring 18 and rise. After the connection is completed, the clamping spring 18 pushes the T-shaped inclined clamping ring 17 down to press the connector in the anti-loosening sleeve 31, forming a pressing anti-loosening mechanism to prevent the connector from becoming loose and improve safety during use.
[0030] Furthermore, the filtering device includes a filter sleeve 12 disposed on one side of the input conductor rod 8, and the filter sleeve 12 is fixedly installed on the side wall of the contact head sleeve 5. A sleeve 13 is fixedly installed on the side wall of the filter sleeve 12, and a resonant rod 14 is slidably installed inside the sleeve 13. An annular groove 15 is opened on the side wall of the resonant rod 14, and the input conductor rod 8 is slidably installed inside the annular groove 15.
[0031] In this embodiment, during installation, the resonant rod 14 can be inserted into the sleeve 13. During installation, the input conductor rod 8 passes through the annular groove 15 of the resonant rod 14. At this time, the resonant rod 14 forms a certain filtering barrier. For high-frequency interference signals above the passband limit, such as adjacent channel communication signals and harmonic noise, the resonant rod 14 forms a stopband through its own resonance characteristics, which attenuates these signals in advance, so that the attenuation can reach 30-50dB, avoiding the superposition of the transmitted signal and the target signal. In addition, the annular groove 15 can enhance electromagnetic coupling and improve filtering accuracy.
[0032] Furthermore, the anti-loosening device includes an anti-loosening sleeve 31 fixedly installed on the side wall of the contact head sleeve 5, and a T-shaped groove 16 is provided inside the anti-loosening sleeve 31. A T-shaped inclined clamping ring 17 is slidably installed on the inner wall of the T-shaped groove 16, and a clamping spring 18 is provided above the T-shaped inclined clamping ring 17. An adjustment device is provided above the clamping spring 18, and a protective device is provided on one side of the anti-loosening sleeve 31.
[0033] In this embodiment, when the connection is made, the connectors at both ends of the output conductor rod 7 and the input conductor rod 8 are first inserted into the anti-loosening sleeve 31. Then, the connectors slide along the inclined surface of the T-shaped groove 16, pushing the T-shaped inclined clamping ring 17 to squeeze the clamping spring 18 upward. After the connection is completed, the clamping spring 18 pushes the T-shaped inclined clamping ring 17 downward to press the connector in the anti-loosening sleeve 31, forming a pressing anti-loosening mechanism to prevent the connector from becoming loose and improve safety during use.
[0034] Furthermore, the adjustment device includes a connecting ring groove 19 formed on the top surface of the T-shaped slide groove 16, and an adjusting nut 20 is rotatably installed inside the connecting ring groove 19. An adjusting thread groove 21 is formed at the bottom end of the adjusting nut 20, and a threaded rod 22 is threaded inside the adjusting thread groove 21. An adjusting plate 23 is fixedly installed on the bottom surface of the threaded rod 22.
[0035] In this embodiment, the adjusting nut 20 can be rotated according to usage requirements. Through the cooperation of the adjusting plate 23 and the threaded rod 22, the adjusting nut 20 will push the threaded rod 22 and the adjusting plate 23 connected by the adjusting thread groove 21 to move down. Then, the adjusting plate 23 will squeeze the T-shaped slide groove 16, adjust the elasticity of the T-shaped slide groove 16, increase the pressing force, and use the T-shaped inclined clamping ring 17 to press and fix more firmly and stably, thereby improving the safety of use.
[0036] Furthermore, the protective device includes a T-shaped threaded groove 26 formed on the side wall of the anti-loosening sleeve 31, and a T-shaped threaded ring 27 is installed inside the T-shaped threaded groove 26. A support ring 28 is fixedly installed at one end of the T-shaped threaded ring 27, and an elastic ring 30 is fixedly installed on the inner wall of the support ring 28.
[0037] In this embodiment, after the connection is completed, the support ring 28 can be rotated. The support ring 28 will rotate outward through the cooperation of the T-shaped threaded ring 27 and the T-shaped threaded groove 26, thereby forming a support drag ring to prevent the wire end of the connector from becoming loose or bent, which would affect the data transmission.
[0038] Furthermore, a protective insulating pad 24 is provided below the T-shaped inclined clamping ring 17, and the protective insulating pad 24 is fixedly installed on the bottom surface of the T-shaped inclined clamping ring 17.
[0039] In this embodiment, by providing a protective insulating pad 24, the bottom surface of the T-shaped inclined clamping ring 17 can be prevented from scratching the surface of the connector.
[0040] Furthermore, the sidewalls of the support ring 28 and the adjusting thread groove 21 are provided with strip grooves 29.
[0041] In this embodiment, by setting the strip groove 29 and the anti-slip groove 25, the strip groove 29 can improve the roughness of the side wall of the support ring 28 and the adjusting nut 20, increase the friction, and facilitate the rotation of the support ring 28 and the adjusting nut 20.
[0042] Furthermore, the insulating sleeve 11 is made of polytetrafluoroethylene, and the aforementioned devices are all made of beryllium bronze and have a coating on their surface.
[0043] In this embodiment, polytetrafluoroethylene (PTFE) possesses good electrical properties and a certain strength, meeting the requirements for electrical performance and operating temperature. Beryllium bronze exhibits excellent conductivity, strength, hardness, elastic limit, and fatigue limit. The selection of beryllium bronze satisfies the requirements for low contact resistance and 500-cycle mating durability, while plating enhances environmental adaptability, electrical contact, and durability.
[0044] Furthermore, the bottom surface of the protective insulating pad 24 is provided with anti-slip grooves 25.
[0045] In this embodiment, the anti-slip groove 25 can increase the roughness of the bottom surface of the protective insulating pad 24, which can increase the friction while avoiding scratching the connector, making it easier to press and fix the connector.
[0046] The working principle is as follows: First, conductor 2 is installed inside housing 1. Then, insulating sleeve 11 is fitted onto output conductor rod 7 and input conductor rod 8. Next, bushing 3 and contact head sleeve 5 are fitted onto the outside of output conductor rod 7 and input conductor rod 8. At this time, the pin rod 10 on the side wall of bushing 3 will be inserted into pin groove 9. The cooperation between pin groove 9 and pin rod 10 can complete the limiting support work of conductor 2 inside housing 1. Then, the equipment can be connected. Insulating sleeve 11 can limit and support output conductor rod 7 and input conductor rod 8, ensuring that housing 1 and input conductor rod 8 are at the axis of connection hole 6. Its structure is lightweight, easy to disassemble and install, does not require welding, and is convenient for installation and debugging.
[0047] During installation, the resonant rod 14 can be inserted into the sleeve 13. During installation, the input conductor rod 8 passes through the annular groove 15 of the resonant rod 14. At this time, the resonant rod 14 will form a certain filtering barrier. For high-frequency interference signals above the passband limit, such as adjacent channel communication signals and harmonic noise, the resonant rod 14 forms a stopband through its own resonance characteristics, which attenuates these signals in advance, so that the attenuation can reach 30-50dB, avoiding the superposition of the transmitted signal and the target signal. In addition, the annular groove 15 can enhance electromagnetic coupling and improve filtering accuracy.
[0048] When the connection is made, the connectors at both ends of the output conductor rod 7 and the input conductor rod 8 are first inserted into the anti-loosening sleeve 31. Then, the connectors slide along the inclined surface of the T-shaped groove 16, pushing the T-shaped inclined clamping ring 17 to squeeze the clamping spring 18 upward. After the connection is completed, the clamping spring 18 pushes the T-shaped inclined clamping ring 17 downward to press the connector in the anti-loosening sleeve 31, forming a pressing anti-loosening mechanism to prevent the connector from becoming loose.
[0049] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A rectangular coaxial adapter with filtering function, characterized in that, The device includes a housing (1), inside which a conductor (2) is slidably mounted, and at both ends of the conductor (2) are bushings (3). A through hole (4) is formed on the side wall of the bushing (3), and a contact head sleeve (5) is provided on one side of the through hole (4). The bushing (3) and the contact head sleeve (5) are slidably mounted inside the housing (1), and a connection hole (6) is formed inside the contact head sleeve (5). An insulating sleeve (11) is slidably mounted inside the connection hole (6). An output conductor rod (7) and an input conductor rod (8) are fixedly mounted on the side wall of the conductor (2), and the output conductor rod... (7) The input conductor rod (8) is slidably installed inside the through hole (4) and the connection hole (6). The insulating sleeve (11) is slidably installed on the side wall of the output conductor rod (7) and the input conductor rod (8). The side wall of the conductor (2) is provided with a pin groove (9). The side wall of the bushing (3) is fixedly installed with a pin rod (10). The pin rod (10) is slidably connected to the pin groove (9). A filter device is provided on one side of the input conductor rod (8). The filter device is used for frequency filtering of the transmitted signal. An anti-loosening device is provided on one side of the contact head sleeve (5). The loosening device prevents the connector from becoming loose.
2. The rectangular coaxial adapter with filtering function according to claim 1, characterized in that, The filtering device includes a filter sleeve (12) disposed on one side of the input conductor rod (8), and the filter sleeve (12) is fixedly installed on the side wall of the contact head sleeve (5). A sleeve (13) is fixedly installed on the side wall of the filter sleeve (12), and a resonant rod (14) is slidably installed inside the sleeve (13). An annular groove (15) is opened on the side wall of the resonant rod (14), and the input conductor rod (8) is slidably installed inside the annular groove (15).
3. A rectangular coaxial adapter with filtering function according to claim 1, characterized in that, The anti-loosening device includes an anti-loosening sleeve (31) fixedly installed on the side wall of the contact head sleeve (5), and a T-shaped groove (16) is provided inside the anti-loosening sleeve (31). A T-shaped inclined clamping ring (17) is slidably installed on the inner wall of the T-shaped groove (16), and a clamping spring (18) is provided above the T-shaped inclined clamping ring (17). An adjustment device is provided above the clamping spring (18), and a protective device is provided on one side of the anti-loosening sleeve (31).
4. A rectangular coaxial adapter with filtering function according to claim 3, characterized in that, The adjusting device includes a connecting ring groove (19) on the top surface of the T-shaped slide (16), and an adjusting nut (20) is rotatably installed inside the connecting ring groove (19). An adjusting thread groove (21) is opened at the bottom end of the adjusting nut (20), and a threaded rod (22) is threaded inside the adjusting thread groove (21). An adjusting plate (23) is fixedly installed on the bottom surface of the threaded rod (22).
5. A rectangular coaxial adapter with filtering function according to claim 3, characterized in that, The protective device includes a T-shaped threaded groove (26) opened on the side wall of the anti-loosening sleeve (31), and a T-shaped threaded ring (27) is installed inside the T-shaped threaded groove (26). A support ring (28) is fixedly installed at one end of the T-shaped threaded ring (27), and an elastic ring (30) is fixedly installed on the inner wall of the support ring (28).
6. A rectangular coaxial adapter with filtering function according to claim 3, characterized in that, The T-shaped inclined clamping ring (17) has a protective insulating pad (24) below it, and the protective insulating pad (24) is fixedly installed on the bottom surface of the T-shaped inclined clamping ring (17).
7. A rectangular coaxial adapter with filtering function according to claim 5, characterized in that, The support ring (28) and the side wall of the adjusting thread groove (21) are provided with a strip groove (29).
8. A rectangular coaxial adapter with filtering function according to claim 7, characterized in that, The insulating sleeve (11) is made of polytetrafluoroethylene, and the above devices are all made of beryllium bronze and have a coating on the surface.
9. A rectangular coaxial adapter with filtering function according to claim 6, characterized in that, The bottom surface of the protective insulating pad (24) is provided with anti-slip grooves (25).