Radio frequency cable connector applied to low-orbit satellite

Abstract

The utility model discloses a radio frequency cable connector applied to a low-orbit satellite, which comprises an outer shell, an inner conductor and an insulating medium arranged in the outer shell and used for supporting and fixing the inner conductor and performing impedance matching, and the outer shell is provided with an air hole used for discharging and connecting gas in the connector in a vacuum environment; the butt joint end of the outer shell is sleeved with a connecting thread sleeve used for locking and fixing after butt joint of the connector is completed, the connecting thread sleeve and the outer shell are connected in a rotating fit mode, and an anti-loosening structure is arranged at the end of the connecting thread sleeve. According to the connector provided by the utility model, the through air holes are additionally formed in the circumference of the outer shell, so that a product can be applied to a track space away from the ground, gas generated by a non-metal medium in vacuum can be released, and further, abnormal problems such as vacuum discharge or breakdown and the like are reduced; and the product really meets the high-reliability aerospace requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency connectors, and particularly relates to a radio frequency cable connector applied to low-orbit satellites. Background Art

[0002] At present, many high-performance SMA connectors have a sealed structure inside. In the vacuum environment where low-orbit satellites are located, the gas generated by the non-metallic medium inside the connector cannot be released, which will cause problems such as vacuum discharge or breakdown, and cannot meet the high-reliability aerospace requirements. At the same time, the mating of the connector is affected by factors such as vibration, and situations such as connection loosening will also occur, thus affecting the reliability of the connector. Summary of the Utility Model

[0003] Technical Objective: Aiming at the deficiencies of the existing radio frequency cable connectors, the utility model discloses a radio frequency cable connector applied to low-orbit satellites.

[0004] Technical Solution: To achieve the above technical objective, the utility model adopts the following technical solution:

[0005] A radio frequency cable connector applied to low-orbit satellites includes an outer shell, an inner conductor, and an insulating medium disposed inside the outer shell for supporting and fixing the inner conductor and performing impedance matching. The outer shell is provided with air holes for exhausting the gas inside the connector in a vacuum environment; a connection nut is sleeved on the docking end of the outer shell for locking and fixing after the connector is docked. The connection nut is rotatably and cooperatively connected with the outer shell, and an anti-loosening structure is provided at the end of the connection nut.

[0006] Preferably, the anti-loosening structure of the utility model includes a through hole provided on the end face of the connection nut. After the connector is docked, the rotation of the connection nut is restricted by inserting a limiting component into the through hole.

[0007] Preferably, the outer shell of the utility model includes a front outer shell for installing the inner conductor to dock the connector and a rear outer shell for connecting the cable and the front outer shell. One end of the rear outer shell close to the front outer shell is sleeved on the front outer shell and is in interference fit with the front outer shell. An annular step protruding from the surface is provided on the outer surface of the front outer shell. A clamping groove is formed between the annular step and the end of the rear outer shell. A snap ring for axially limiting the connection nut is provided in the clamping groove. A groove for the snap ring to be embedded is provided on the mating surface of the connection nut and the snap ring.

[0008] Preferably, the end of the front outer shell of the utility model is provided with an anti-rotation clamping groove in the radial direction. After the connector is docked, an engaging structure is formed through the anti-rotation clamping groove to restrict the rotation of the connector.

[0009] Preferably, the insulating medium of the present utility model includes a front insulating medium and a rear insulating medium. A raised stepped surface is provided in the middle of the inner conductor, which abuts against the ends of the front insulating medium and the rear insulating medium. An air cavity is formed between the raised stepped surface and the surface of the front outer housing. The air hole is provided at the air cavity. Steps for axially limiting by abutting against the ends of the insulating medium are provided at the corresponding ends of the front outer housing and the rear outer housing.

[0010] Preferably, knurling is provided on the contacting surfaces of the inner conductor and the front insulating medium of the present utility model.

[0011] Beneficial effects: The radio frequency cable connector applied to low-orbit satellites provided by the present utility model has the following beneficial effects:

[0012] 1. In the present utility model, through holes are added to the circumference of the outer housing of the connector, and the product can be applied in the orbital space at a distance from the ground. The gas generated by the non-metallic medium in the vacuum can be released, thereby further reducing abnormal problems such as vacuum discharge or breakdown, and enabling the product to truly meet the high-reliability aerospace requirements.

[0013] 2. In the present utility model, an anti-rotation card slot is provided at the end of the front outer housing, and an anti-loosening structure is provided on the connecting nut. It can prevent the connector from failing due to loose connection during use and ensure the reliability of the connection.

[0014] 3. In the present utility model, the outer housing, the inner conductor, and the insulating medium are limited by a mechanical stepped structure, which can ensure the assembly accuracy. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for description in the embodiments or the prior art.

[0016] Figure 1 It is a cross-sectional view of the overall structure of the connector of the present utility model;

[0017] Figure 2 It is a structural diagram of the end surface where the connecting nut is located on the connector of the present utility model;

[0018] Among them, 1 - inner conductor, 2 - air hole, 3 - connecting nut, 4 - through hole, 5 - front outer housing, 6 - rear outer housing, 7 - card slot, 8 - snap ring, 9 - anti-rotation card slot, 10 - front insulating medium, 11 - rear insulating medium, 12 - raised stepped surface, 13 - air cavity. Detailed Embodiment

[0019] Reference will now be made in detail to the embodiments of the present disclosure, one or more examples of which are set forth below. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of the present disclosure, and not by way of limitation. On the contrary, the following description provides a convenient illustration for implementing the exemplary embodiments of the present disclosure. In fact, those skilled in the art will appreciate that various modifications and variations can be made within the teachings of the present disclosure without departing from the scope or spirit of the present disclosure. For example, features shown or described as part of one embodiment can be combined with another embodiment to yield yet another embodiment. It is intended that the present disclosure cover such modifications and variations that fall within the scope of the appended claims and their equivalents. Other objects, features, and aspects of the present disclosure are disclosed or will be apparent from the following detailed description. It is to be understood by those of ordinary skill in the art that this discussion is only a description of exemplary embodiments and is not intended to limit the broader aspects of the present disclosure.

[0020] As Figure 1 and Figure 2 shown, the present utility model discloses a radio frequency cable connector applied to a low-orbit satellite, which includes an outer housing, an inner conductor 1, and an insulating medium disposed within the outer housing for supporting and fixing the inner conductor and performing impedance matching. The outer housing is provided with air holes 2 for exhausting the internal gas of the connector in a vacuum environment. A connection sleeve 3 for locking and fixing after the connector is docked is sleeved on the docking end of the outer housing. The connection sleeve 3 is rotationally and cooperatively connected to the outer housing, and a loosening prevention structure is provided at the end of the connection sleeve 3.

[0021] The loosening prevention structure of the present utility model includes a through hole 4 provided on the end face of the connection sleeve 3. After the connector is docked, the rotation of the connection sleeve 3 is restricted by inserting a limiting member into the through hole 4. The limiting member can use structures such as iron wire to quickly limit the connection sleeve 3, thereby avoiding loosening caused by the rotation of the connection sleeve due to vibration or other influencing factors, which affects the connection stability of the connector.

[0022] Specifically, for the convenience of structural assembly and to ensure the assembly accuracy, the outer housing of the present utility model includes a front outer housing 5 for installing the inner conductor 1 to dock the connector and a rear outer housing 6 for connecting the cable and the front outer housing 5. One end of the rear outer housing 6 close to the front outer housing 5 is sleeved on the front outer housing 5 and has an interference fit with the front outer housing 5. A raised annular step is provided on the outer surface of the front outer housing 5, and a clamping groove 7 is formed between the annular step and the end of the rear outer housing. A snap ring 8 for axially limiting the connection sleeve 3 is provided in the clamping groove 7. The connection sleeve 3 is provided with a groove for the snap ring 8 to be embedded on the mating surface with the snap ring 8, which can both axially limit the connection sleeve 3 and not affect the rotation of the connection sleeve 3 during the tightening of the connector.

[0023] The insulating medium includes a front insulating medium 10 and a rear insulating medium 11. A raised stepped surface 12 that abuts against the ends of the front insulating medium 10 and the rear insulating medium 10 is provided in the middle of the inner conductor 1. An air cavity 13 is formed between the raised stepped surface 12 and the surface of the front outer casing 5. The air hole 2 is provided at the air cavity 13. Knurling is provided on the contacting surfaces of the inner conductor 1 and the front insulating medium 10 to prevent the inner conductor 4 from rotating. Steps for axially limiting by abutting against the ends of the insulating medium are provided at the ends of the front outer casing 5 and the rear outer casing 6 corresponding to the insulating medium. Axial limiting is achieved by the abutting of the stepped surfaces between the components of the connector, which is beneficial to ensuring the assembly accuracy and reducing the assembly difficulty.

[0024] At the end of the front outer casing 5 of the present utility model, an anti-rotation card slot 9 is also provided in the radial direction. After the connectors are docked, an engaging structure is formed through the anti-rotation card slot 9 to limit the rotation of the connectors and ensure the stability of the electrical connection of the connectors.

[0025] When the present utility model is in use, the cable is docked with the corresponding connector joint through the connector, and the connecting nut 8 is used to lock and fix the connector and the docked joint to ensure the connection stability. At the same time, the anti-loosening structure on the connecting nut 8 can limit the rotation of the connecting nut 8 during operation to avoid loosening of the connection. The gas generated by the non-metallic medium is released from the air hole 2 to avoid problems such as vacuum discharge or breakdown, so as to adapt to the vacuum operating environment of the low-orbit satellite.

Claims

1. A radio frequency cable connector applied to low-orbit satellites, characterized in that, It includes an outer housing, an inner conductor (1), and an insulating medium disposed within the outer housing for supporting and fixing the inner conductor and performing impedance matching. An air hole (2) is provided on the outer housing for exhausting the internal gas of the connector in a vacuum environment and making a connection; a connection sleeve (3) for locking and fixing after the connector docking is sleeved on the docking end of the outer housing. The connection sleeve (3) is rotatably and cooperatively connected to the outer housing, and an anti-loosening structure is provided at the end of the connection sleeve (3).

2. The RF cable connector applied to a low-orbit satellite according to claim 1, characterized in that, The anti-loosening structure includes a through hole (4) provided on the end face of the connection sleeve (3). After the connector docking is completed, the rotation of the connection sleeve (3) is restricted by inserting a limiting component into the through hole (4).

3. The RF cable connector applied to a low-orbit satellite according to claim 1, characterized in that, The outer housing includes a front outer housing (5) for installing the inner conductor (1) to perform connector docking and a rear outer housing (6) for connecting the cable and the front outer housing (5). One end of the rear outer housing (6) close to the front outer housing (5) is sleeved on the front outer housing (5) and has an interference fit with the front outer housing (5). An annular step protruding from the surface is provided on the outer surface of the front outer housing (5). A clamping groove (7) is formed between the annular step and the end of the rear outer housing. A snap ring (8) for axially limiting the connection sleeve (3) is provided in the clamping groove (7). A groove for the snap ring (8) to be embedded is provided on the mating surface of the connection sleeve (3) and the snap ring (8).

4. The RF cable connector for low-orbit satellites according to claim 3, wherein An anti-rotation clamping groove (9) is provided in the radial direction at the end of the front outer housing (5). After the connector docking, an engaging structure is formed through the anti-rotation clamping groove (9) to restrict the rotation of the connector.

5. The RF cable connector for a low-orbit satellite according to claim 3, characterized in that, The insulating medium includes a front insulating medium (10) and a rear insulating medium (11). A raised step surface (12) that abuts against the ends of the front insulating medium (10) and the rear insulating medium (10) is provided in the middle of the inner conductor (1). An air cavity (13) is formed between the raised step surface (12) and the surface of the front outer housing (5). The air hole (2) is provided at the air cavity (13). Steps for axially limiting by abutting against the ends of the insulating medium are provided at the front outer housing (5) and the rear outer housing (6) corresponding to the ends of the insulating medium respectively.

6. The RF cable connector applied to a low-orbit satellite according to claim 5, characterized in that, Knurling is provided on the surfaces where the inner conductor (1) and the front insulating medium (10) are in contact.

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