Novel assembling type radio frequency coaxial connector
By introducing support structure and limit blocks into the RF coaxial connector, combining sealing rings and wire clips, the problems of misalignment of guidance and unstable performance during cable insertion and rotation are solved, and the stable locking of the cable is achieved and High performance connection.
Patent Information
- Application Number
- CN202420893970.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-26
AI Technical Summary
Existing mounted RF coaxial connectors are prone to misalignment of guides during cable insertion and rotation, inconsistent cable length leads to poor coaxiality, and poor performance of cable rotation or axial movement during cable connection. The problem of stability.
A new type of mounted coaxial connector is designed to ensure the cable is secured by providing a supported insulated end cap and press ring in the front housing, combined with fastening nuts and limit blocks, and clamps and seals. and a two-stage step hole is provided at the tail of the center conductor to fix the conductor in the cable.
The cable is stable locking and fixing is achieved, preventing radial rotation and axial movement, ensuring the performance stability and consistency of the connector, especially in high-performance frequency bands (such as 6GHz), which controls VSWR and PIM Performance, improving the firmness and stability of the connector.
Smart Images
Figure CN222282414U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a radio frequency coaxial connector, in particular to a novel attachable radio frequency coaxial connector. Background Art
[0002] The attachable RF coaxial connector generally consists of a front body and a rear body. The front body mainly includes the shell, center conductor and insulator, and the rear body mainly includes the fastening nut and sealing ring. However, since the slotted part at the tail end of the center conductor has no support, it is easy to cause the inner conductor to not be aligned with the center guide when inserted. Or, if the inner conductor lengths of the cable are inconsistent, the effective support length is insufficient, resulting in poor coaxiality.
[0003] In addition, the rear body is generally only supported by the fastening nut to support the cable. When it is screwed into the front body of the connector, the radial rotation or axial movement of the cable causes insufficient extrusion of the outer corrugated tube layer of the cable. There is still a risk of relative rotation between the cable and the connector. The stability of the performance is difficult to guarantee, especially for products with high performance requirements. This structure is difficult to guarantee. Summary of the Invention
[0004] The technical problem to be solved by the utility model is to provide a novel attachable coaxial connector which can lock the cable to prevent rotation and ensure the performance stability and consistency of the entire cable assembly, thereby ensuring high performance.
[0005] In order to solve the above technical problems, the utility model provides a new type of assembled coaxial connector, including a front body with a front shell, a center conductor and an insulator, and a rear body with a fastening nut. The center conductor is arranged in the front shell and supported by the insulator. The front shell is also provided with an insulating end cover supported on the tail of the center conductor and a pressure ring for supporting the insulating end cover. The fastening nut is screwed onto the threaded connection end at the rear end of the front shell and the insulating end cover is pressed and fixed by the pressure ring. A limiting block is arranged in the rear shell, and a wire clamp for clamping the cable is pressed between the fastening nut and the limiting block. The inner conductor of the cable is connected to the center conductor and can be locked by the fastening nut, the wire clamp, the rear shell and the limiting block.
[0006] The rear end of the front shell is provided with a rear limiting step for limiting the insulating end cover and the pressure ring, and the front end of the fastening nut is provided with a front limiting step for limiting the pressure ring. The insulating end cover and the pressure ring are pressed and positioned between the front shell and the fastening nut by the rear limiting step and the front limiting step.
[0007] The tail of the central conductor is provided with a two-stage stepped hole as an insertion hole for the cable, through which the inner conductor of the cable can be plugged and fixed.
[0008] The front end of the limit block is provided with a guiding inclined surface for cooperating with the wire clamp.
[0009] A radial groove is provided on the circumferential surface of the rear half of the wire clamp.
[0010] The fastening nut is sleeved with a No. 1 sealing ring for matching with the front shell and a No. 2 sealing ring for matching with the rear shell.
[0011] The front side of the pressure ring is provided with a step hole, and the insulating end cover is provided with a step surface matched with the step hole.
[0012] The advantages of the utility model are:
[0013] After the cable is stripped, the rear shell is put on the outer sheath of the cable, and the sealing sleeve is screwed on the corrugated tube of the cable and aligned with the outer sheath end, and then the fastening nut is screwed into the cable. The end face of the corrugated tube of the cable is flush with the end face of the fastening nut. At this time, the fastening nut is kept stationary, and the rear body can lock the cable and stop rotation before being screwed together with the front body. The rear shell and the fastening nut are screwed together through threads, and the cable is clamped by the wire clamp during the screwing process, especially the cable is clamped by the inclined surface extrusion fit of the wire clamp and the limit block during the screwing process, thereby preventing the cable from radial rotation and axial movement. At the same time, when the front body and the rear body of the connector are screwed together, the cable will not rotate radially or move axially, so that the extrusion amount of the outer corrugated tube layer of the cable is sufficient, so that the performance stability and consistency of the entire cable assembly are guaranteed, and the high performance requirements of the attachable coaxial connector are ensured. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the assembly structure of the new type of attachable coaxial connector of the utility model;
[0015] Figure 2 This is a schematic diagram of the exploded structure of the new type of attachable coaxial connector of the present utility model. DETAILED DESCRIPTION
[0016] The novel attachable coaxial connector of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0017] As shown in the figure, the new type of attachable coaxial connector of the present invention is mainly used for matching corrugated tube cables, including a front body with a front shell 8, a center conductor 5 and an insulator 4, and a rear body with a fastening nut 10 and a rear shell 13. The center conductor 5 is arranged in the front shell and supported by the insulator 4. The front shell 8 is also provided with an insulating end cover 6 supported at the tail of the center conductor and a pressure ring 7 for supporting the insulating end cover. The fastening nut 10 is screwed onto the threaded connection end at the rear end of the front shell 8 and is pressed and fixed to the insulating end cover 6 by the pressure ring 7, thereby supporting the tail end of the center conductor 5 by the insulating end cover, ensuring the coaxiality of the inner conductor of the cable when it is inserted, and at the same time ensuring that the stripping size of the inner conductor of the cable is within a certain range and coaxial with the center conductor. The rear shell 13 can tighten the rear end of the nut 10. The fastening nut 10 is provided with a No. 1 sealing ring 9 for cooperating with the front shell 8 and a No. 2 sealing ring 11 for cooperating with the rear shell 13. A limit block 14 is arranged in the rear shell 13. A wire clamp 12 for clamping the cable 15 is pressed between the fastening nut 10 and the limit block 14. A radial groove 17 is provided on the circumferential surface of the rear half of the wire clamp 12. The fastening nut, wire clamp, limit block and rear shell of the rear body play a very critical role in locking the cable and preventing the cable from rotating. The inner conductor of the cable 15 is connected to the center conductor 5 and can be locked by the fastening nut 10, wire clamp 12, rear shell 13 and limit block 14 when the cable is locked, without radial rotation and axial movement.
[0018] Furthermore, the rear end of the front shell 8 is provided with a rear limiting step 1 for limiting the insulating end cover 6 and the pressure ring 7, and the front end of the fastening nut 10 is provided with a front limiting step 2 for limiting the pressure ring. The insulating end cover 6 and the pressure ring 7 are pressed and positioned between the front shell 8 and the fastening nut 10 by the rear limiting step and the front limiting step.
[0019] Furthermore, a two-stage stepped hole 3 can be provided at the tail of the center conductor 5 as an insertion hole for the cable. The inner conductor of the cable can be plugged and fixed through the insertion hole to ensure better insertion elasticity and a tighter fit with the inner conductor of the cable. A sealing sleeve 17 is screwed on the corrugated tube of the cable, and the front end of the limit block 14 is provided with a guide slope 16 for cooperating with the wire clamp 12. A stepped hole is provided on the front side of the pressure ring 7, and the insulating end cover 6 is provided with a stepped surface that cooperates with the stepped hole.
[0020] During use, the cable is secured by the rear body's clamping nut, wire clamp, stopper, and rear housing. After stripping the cable, the rear housing is placed over the cable's outer sheath, and the sealing sleeve 18 is screwed onto the cable's corrugated tube, aligned with the outer sheath end. The clamping nut 10 is then screwed into the cable 15. When the end face of the cable 15's corrugated tube is flush with the end face of the clamping nut 10, the clamping nut 10 is held stationary, and the rear housing and the clamping nut are screwed together. During the screwing process, the clamping clamp closes to clamp the cable, preventing radial rotation and axial movement of the cable. When the front and rear bodies of the connector are screwed together, radial rotation and axial movement of the cable do not occur, thereby ensuring sufficient lamination of the cable's outer corrugated tube, and ensuring the performance stability and consistency of the entire cable assembly. This clamping structure significantly improves the stability of the connector's VSWR and PIM performance.
[0021] With this structural guarantee, the firmness and stability of the connection between the rear body and the front body of the connector are ensured. The performance parameters of this product are: When extended to the 6GHz frequency band, the voltage standing wave ratio can be controlled within 1.20, and the PIM reaches above -115dBm.
[0022] Actual testing has shown that the utility model can better ensure the firmness between the cable and the connector compared with the ordinary structure, especially after on-site installation, the consistency and stability of the cable assembly are very good, ensuring the high performance of the product.
[0023] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.
Claims
1. A novel attachable coaxial connector, comprising a front body having a front housing (8), a center conductor (5) and an insulator (4), and a rear body having a fastening nut (10) and a rear housing (13), wherein the center conductor (5) is arranged in the front housing and supported by the insulator (4), characterized in that: The front housing (8) is also provided with an insulating end cover (6) supported at the rear of the center conductor and a pressure ring (7) for supporting the insulating end cover. The fastening nut (10) is screwed onto the threaded connection end at the rear end of the front housing (8) and the insulating end cover (6) is pressed and fixed by the pressure ring (7). A limit block (14) is arranged in the rear housing (13). A wire clamp (12) for clamping the cable (15) is pressed between the fastening nut (10) and the limit block (14). The inner conductor of the cable (15) is connected to the center conductor (5) and can be locked by the fastening nut (10), the wire clamp (12), the rear housing (13) and the limit block (14).
2. The novel attachable coaxial connector according to claim 1, characterized in that: The rear end of the front housing (8) is provided with a rear limiting step (1) for limiting the position of the insulating end cover (6) and the pressure ring (7), and the front end of the fastening nut (10) is provided with a front limiting step (2) for limiting the position of the pressure ring. The insulating end cover (6) and the pressure ring (7) are pressed and positioned between the front housing (8) and the fastening nut (10) by the rear limiting step and the front limiting step.
3. The novel attachable coaxial connector according to claim 1 or 2, characterized in that: The tail of the central conductor (5) is provided with a two-stage stepped hole (3) as an insertion hole for the cable, and the inner conductor of the cable can be plugged and fixed through the insertion hole.
4. The novel attachable coaxial connector according to claim 3 is characterized in that: The front end of the limit block (14) is provided with a guide inclined surface (16) for cooperating with the wire clamp (12).
5. The novel attachable coaxial connector according to claim 1, 2 or 4, characterized in that: A radial groove (17) is provided on the circumferential surface of the rear half of the wire clamp (12).
6. The novel attachable coaxial connector according to claim 5, characterized in that: The fastening nut (10) is sleeved with a No. 1 sealing ring (9) for cooperating with the front housing (8) and a No. 2 sealing ring (11) for cooperating with the rear housing (13).
7. The novel attachable coaxial connector according to claim 6, characterized in that: The front side of the pressure ring (7) is provided with a step hole, and the insulating end cover (6) is provided with a step surface that matches the step hole.