CN217306876U

CN217306876U - Radio frequency coaxial connector

Info

Publication number: CN217306876U
Application number: CN202221056388.3U
Authority: CN
Inventors: 石婷婷
Original assignee: Beijing Bbef Science and Technology Co Ltd
Current assignee: Beijing Bbef Science and Technology Co Ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-08-26
Anticipated expiration: 2032-05-05

Abstract

The application relates to a radio frequency coaxial connector, which belongs to the field of electrical connection technology and comprises an outer conductor, a locking nut, a plug connector and a clamping connector; the outer conductor is in threaded connection with the locking nut, the plug connector is used for being inserted on the cable and limiting the outer conductor to move towards one end of the locking nut, and the clamping piece is used for being clamped between the shielding layer and the outward-turning layer and limiting the locking nut to move towards one end of the outer conductor. The application enhances the connection strength between the radio frequency coaxial connector and the cable.

Description

Radio frequency coaxial connector

Technical Field

The application relates to the field of electrical connection technology, in particular to a radio frequency coaxial connector.

Background

The radio frequency coaxial connector is a component which is attached to a cable or mounted on an instrument, is used as an element for electrically connecting or separating a transmission line, and belongs to a mechatronic product.

A radio frequency coaxial connector typically includes multiple parts, an inner conductor, an outer conductor, and an insulating support. The RF coaxial connecting cable assembly is combined with matched RF cables to form RF coaxial connecting cable assembly for connecting RF signal and each unit module. Briefly, the rf coaxial connector mainly serves as a bridge. The electromagnetic wave filter has the characteristics of low loss, low radiation and good electromagnetic compatibility, and can work in a higher frequency range; and the wiring is easier in the whole equipment, and the usability and the maintainability are higher.

In view of the above-mentioned related technologies, the inventor believes that the connection strength between the rf coaxial connector and the cable in the above-mentioned technologies is low, and the rf coaxial connector and the cable are likely to be separated when receiving an external impact.

SUMMERY OF THE UTILITY MODEL

In order to enhance the connection strength between the radio frequency coaxial connector and the cable, the application provides the radio frequency coaxial connector.

The radio frequency coaxial connector provided by the application adopts the following technical scheme:

a radio frequency coaxial connector is used for being connected to a cable, the cable comprises a core wire, an insulating layer, a shielding layer and an outer protective layer, one end of the shielding layer, which is used for being connected with the radio frequency coaxial connector, is turned outwards to form an outwards-turned layer, and the radio frequency coaxial connector comprises an outer conductor, a locking nut, a plug connector and a clamping piece; the outer conductor is in threaded connection with the locking nut, the plug connector is used for being inserted on the cable and limiting the outer conductor to move towards one end of the locking nut, and the clamping piece is used for being clamped between the shielding layer and the outward-turning layer and limiting the locking nut to move towards one end of the outer conductor.

Through adopting above-mentioned technical scheme, under the restriction of plug connector and joint spare, threaded connection's lock nut and outer conductor are fixed at the tip of cable, strengthen the joint strength between radio frequency coaxial connector and the cable, have reduced the possibility of radio frequency coaxial connector and cable separation, have strengthened signal transmission's stability.

Optionally, the plug connector comprises a plug part, the plug part is used for being inserted between the shielding layer and the insulating layer, one end of the plug part is provided with a limiting part, and the limiting part is used for abutting against the outer conductor.

Through adopting above-mentioned technical scheme, grafting portion inserts and locates between shielding layer and the insulating layer, through the clamp force of shielding layer and insulating layer, fixes grafting portion on the cable and has strengthened, has strengthened plug connector and cable junction's stability.

Optionally, the inserting part is cylindrical, and the inserting part is in interference fit with the shielding layer.

Through adopting above-mentioned technical scheme, the stability of plug connector and cable junction has further been strengthened.

Optionally, the joint spare includes joint portion, joint portion is cylindricly, the shielding layer is located to joint portion cover and turns up between the layer, the one end of joint portion is provided with the butt portion that is used for butt lock nut.

Through adopting above-mentioned technical scheme, set up joint portion between evagination layer and shielding layer, restricted joint portion to the removal that breaks away from the direction of cable, strengthened the stability of joint spare.

Optionally, the abutting portion comprises a plurality of clamping pieces which are circumferentially distributed at the end portion of the clamping portion, a gap for deformation of the clamping pieces is formed between every two adjacent clamping pieces, and a conical surface for tightening the clamping pieces is arranged on the locking nut.

Through adopting above-mentioned technical scheme, at the in-process that lock nut removed to the direction that is close to the flange, the preceding butt clamping piece of conical surface, along with lock nut constantly removes to the direction that is close to the flange, the direction deformation that the conical surface extrusion clamping piece will be close to the outer protective layer to press from both sides tightly on the outer protective layer, thereby fix the joint spare on the cable, strengthened the joint strength between reinforcing radio frequency coaxial connector and the cable.

Optionally, one side of the clamping piece, which faces away from the conical surface, is provided with anti-slip threads.

Through adopting above-mentioned technical scheme, increased the friction factor between clamping piece and the outer protective layer, reduced the possibility that takes place to slide between clamping piece and the outer protective layer.

Optionally, the clamping portion is matched with the inner wall of the outer conductor to limit the turnover layer.

Through adopting above-mentioned technical scheme, through the cooperation of connecting cylinder inner wall and joint portion outer wall, restricted turning over of the portion of turning up, strengthened the stability of joint portion.

Optionally, the cable further comprises an inner conductor connected with the core wire, and the inner conductor is sleeved with an insulating support for supporting the inner conductor.

By adopting the technical scheme, the stability of the inner conductor is enhanced.

Optionally, an insulating pad is disposed between the insulating support and the plug connector.

Optionally, a limiting member is disposed on the inner wall of the outer conductor, and the insulating support clamp is disposed between the limiting member and the insulating pad.

By adopting the technical scheme, the axial movement of the insulating support is limited, and the stability of the insulating support is enhanced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. under the limitation of the plug connector and the clamping connector, the locking nut and the outer conductor which are in threaded connection are fixed at the end part of the cable, so that the connection strength between the radio frequency coaxial connector and the cable is enhanced, the possibility of separating the radio frequency coaxial connector from the cable is reduced, and the stability of signal transmission is enhanced;

2. the plugging part is inserted between the shielding layer and the insulating layer, and the clamping force of the shielding layer and the insulating layer is utilized to fix the plugging part on the cable, so that the connection stability of the plug connector and the cable is enhanced;

3. the direction that the conical surface extrusion clamping piece will be close to the outer protective layer is deformed to press from both sides tightly on the outer protective layer, thereby fix the joint spare on the cable, strengthened the joint strength between reinforcing radio frequency coaxial connector and the cable.

Drawings

Fig. 1 is a schematic structural diagram of an rf coaxial connector according to an embodiment of the present disclosure.

Fig. 2 is a cross-sectional view of an rf coaxial connector according to an embodiment of the present application.

Fig. 3 is an exploded view of an rf coaxial connector according to an embodiment of the present disclosure.

Description of the reference numerals: 1. a cable; 11. a core wire; 12. an insulating layer; 13. a shielding layer; 14. an outer protective layer; 15. an outward turning layer; 2. an outer conductor; 21. a connecting cylinder; 211. a step surface; 22. a flange; 23. a limiting member; 3. locking the nut; 31. a connecting portion; 32. a tightening section; 4. a plug-in unit; 41. a plug-in part; 42. a limiting part; 5. a clamping piece; 51. a clamping part; 52. an abutting portion; 521. a clip; 6. an inner conductor; 7. insulating support; 8. and an insulating gasket.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a radio frequency coaxial connector. Referring to fig. 1 and fig. 2, first, in order to facilitate understanding of the rf coaxial connector provided in the embodiment of the present application, an application scenario of the rf coaxial connector provided in the embodiment of the present application is described first, and the rf coaxial connector provided in the embodiment of the present application is used for being mounted on a cable 1 as a bridge for information transmission. The cable 1 includes a core wire 11, an insulating layer 12 wrapped around the core wire 11, a shielding layer 13 wrapped around the insulating layer 12, and an outer protective layer 14 wrapped around the shielding layer 13. The outer protective layer 14 is made of plastic, and one end of the outer protective layer 14, which is used for connecting the radio frequency coaxial connector, is cut off. The shielding layer 13 is formed by weaving a plurality of copper wires, and one end of the shielding layer 13, which is used for being connected with the radio frequency coaxial connector, is spread and combed flat and is folded to form an outward turning layer 15.

Referring to fig. 2 and 3, the radio frequency coaxial connector comprises an outer conductor 2 and a locking nut 3 which are in threaded fit, and further comprises a plug connector 4 for being plugged on a cable 1 and a clamping member 5 for being clamped on the cable 1. The plug connector 4 is used for being inserted on the cable 1 and is abutted against the outer conductor 2 to limit the outer conductor 2 to move towards the middle position of the cable 1; the clamping piece 5 is used for clamping the cable 1 and abuts against the locking nut 3 to limit the locking nut 3 to move towards the direction of disengaging from the cable 1.

Referring to fig. 2 and 3, the plug 4 includes a plug portion 41 inserted between the shielding layer 13 and the insulating layer 12, the plug portion 41 is cylindrical, and the plug portion 41 is in interference fit with the shielding layer 13. One end of the inserting part 41 is fixedly connected with a limiting part 42 used for being abutted against the outer conductor 2, the limiting part 42 is in a circular ring shape, the inserting part 41 and the limiting part 42 are coaxially arranged, and the outer diameter of the limiting part 42 is larger than that of the inserting part 41.

Referring to fig. 2 and 3, the clip member 5 includes a cylindrical clip portion 51, and the clip portion 51 is interposed between the outer protective layer 14 and the everting layer 15. One end of the clamping portion 51 abuts against the bent part between the outward-turning layer 15 and the shielding layer 13, and the other end of the clamping portion 51 is provided with an abutting portion 52 for abutting against the lock nut 3. The abutting part 52 comprises a plurality of clips 521 fixedly connected to the end of the clamping part 51, the plurality of clips 521 are uniformly distributed around the clamping part 51, and a gap is formed between two adjacent clips 521. One side of each clip 521, which faces the axis of the clamping portion 51, is provided with anti-slip lines.

Referring to fig. 2 and 3, the outer conductor 2 includes a connecting tube 21 and a flange 22 fixedly fitted on the connecting tube 21. One end of the connecting cylinder 21 is provided with an external thread for screwing the lock nut 3. The inner wall of the connecting cylinder 21 is provided with a step surface 211 for abutting against the limiting part 42, the inner wall of the connecting cylinder 21 is further provided with a limiting part 23, and the limiting part 23 is an annular structure fixedly connected to the inner wall of the connecting cylinder 21.

Referring to fig. 2 and 3, the locking nut 3 includes a connecting portion 31 and a tightening portion 32 fixedly connected to one end of the connecting portion 31, an inner wall of the connecting portion 31 is provided with an internal thread for screwing the connecting cylinder 21, and an inner wall of the locking portion is provided with a tapered surface gradually reducing in diameter from one end close to the connecting portion 31 to one end far from the connecting portion 31.

Referring to fig. 2 and 3, the rf coaxial connector further includes an inner conductor 6 disposed on the core wire 11, and the inner conductor 6 is welded to the core wire 11. In order to enhance the stability of the inner conductor 6, a cylindrical insulating support 7 is sleeved at the joint of the inner conductor 6 and the core wire 11, and one end of the insulating support 7 is provided with a concave surface. An insulating spacer 8 is provided between the insulating support 7 and the stopper 42.

When installing the radio frequency coaxial connector on cable 1, earlier with lock nut 3 and joint spare 5 overlap on cable 1 in proper order, then strip one section with the tip of outer protective layer 14, the tip of shielding layer 13 is chosen, is combed flat again to buckle the copper wire to be perpendicular with insulating layer 12, heat outer protective layer 14 with the heat gun afterwards, then insert grafting portion 41 rapidly and establish between shielding layer 13 and insulating layer 12, thereby fix plug connector 4 on cable 1. Then the clamping piece 5 is moved to the bending part of the copper wire to be tightly pressed until no gap exists, and the copper wire is bent backwards to form an outward-turning layer 15. Then, the exposed insulating layer 12 is cut off to expose the core wire 11, and then the insulating spacer 8 is sleeved on the core wire 11. The inner conductor 6 is then sheathed and welded to the core wire 11. And then sleeving the insulating support 7 at the joint of the core wire 11 and the inner conductor 6, and enabling the concave surface of the insulating support 7 to face to the side away from the insulating gasket 8. The outer conductor 2 is fitted over the end of the cable 1, and the end of the connecting tube 21 for screwing the lock nut 3 is directed toward the lock nut 3, so that the stepped surface 211 abuts against the stopper 42 and the stopper 23 abuts against the insulating support 7. Finally, the lock nut 3 is screwed to the connecting cylinder 21 and tightened with a wrench. In the process that the locking nut 3 moves towards the direction close to the flange 22, the tapered surface firstly abuts against the clamping piece 521, and along with the continuous movement of the locking nut 3 towards the direction close to the flange 22, the tapered surface extrudes the clamping piece 521 to deform towards the direction close to the outer protection layer 14 and clamp on the outer protection layer 14.

The implementation principle of the radio frequency coaxial connector in the embodiment of the application is as follows: the plug-in unit 4 is fixed on the cable 1 by interposing the plug-in unit 41 between the shielding layer 13 and the insulating layer 12; by arranging the clamping portion 51 between the outward-turning layer 15 and the shielding layer 13, the movement of the clamping portion 51 in the direction of separating from the cable 1 is limited; the movement of the outer conductor 2 in the direction approaching the middle of the cable 1 is limited by the abutment of the stopper 42 and the step surface 211; the turnover of the outward turning part is limited through the matching of the inner wall of the connecting cylinder 21 and the outer wall of the clamping part 51, and the stability of the clamping part 51 is enhanced; the movement of the lock nut 3 in the direction of detaching from the cable 1 is restricted by the abutment of the lock nut 3 with the abutting portion 52; the locking nut 3 and the outer conductor 2 which are connected by screw thread are fixed at the end of the cable under the restriction of the plug-in unit 4 and the clamping unit 5. Compared with the related art, the radio frequency coaxial connector enhances the connection strength between the radio frequency coaxial connector and the cable 1, reduces the possibility of separation of the radio frequency coaxial connector and the cable 1, and enhances the stability of signal transmission.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a radio frequency coaxial connector for connect on cable (1), cable (1) is including heart yearn (11), insulating layer (12), shielding layer (13) and outer protective layer (14), shielding layer (13) are used for connecting radio frequency coaxial connector's one end and turn over outward and form turn-up layer (15), its characterized in that: the radio frequency coaxial connector comprises an outer conductor (2), a locking nut (3), a plug connector (4) and a clamping connector (5); the outer conductor (2) is in threaded connection with the locking nut (3), the plug connector (4) is used for being inserted into the cable (1) and limiting the outer conductor (2) to move towards the direction close to the middle of the cable (1), and the clamping piece (5) is used for being clamped between the shielding layer (13) and the outward turning layer (15) and limiting the locking nut (3) to move towards the direction of disengaging from the cable (1).

2. A radio frequency coaxial connector according to claim 1, wherein: the plug connector (4) comprises a plug-in part (41), the plug-in part (41) is used for being inserted between the shielding layer (13) and the insulating layer (12), a limiting part (42) is arranged at one end of the plug-in part (41), and the limiting part (42) is used for being abutted to the outer conductor (2).

3. A radio frequency coaxial connector as defined in claim 2, wherein: the plug part (41) is cylindrical, and the plug part (41) is in interference fit with the shielding layer (13).

4. A radio frequency coaxial connector according to claim 3, wherein: joint spare (5) are including joint portion (51), joint portion (51) are cylindricly, shielding layer (13) and between outer layer (15) turn over are located to joint portion (51) cover, the one end of joint portion (51) is provided with butt portion (52) that are used for butt lock nut (3).

5. The rf coaxial connector of claim 4, wherein: the abutting part (52) comprises a plurality of clamping pieces (521) which are circumferentially distributed at the end part of the clamping part (51), a gap for deformation of the clamping pieces (521) is formed between every two adjacent clamping pieces (521), and a conical surface for tightening the clamping pieces (521) is arranged on the locking nut (3).

6. The rf coaxial connector of claim 5, wherein: and anti-skid grains are arranged on one side of the clamping piece (521) departing from the conical surface.

7. The rf coaxial connector of claim 4, wherein: the clamping portion (51) is matched with the inner wall of the outer conductor (2) and used for limiting the turnover of the turnover layer (15).

8. A radio frequency coaxial connector according to any one of claims 1-7, wherein: the cable is characterized by further comprising an inner conductor (6) connected with the core wire (11), wherein an insulating support (7) used for supporting the inner conductor (6) is sleeved on the inner conductor (6).

9. A radio frequency coaxial connector according to claim 8, wherein: an insulating gasket (8) is arranged between the insulating support (7) and the plug connector (4).

10. A radio frequency coaxial connector according to claim 8, wherein: be provided with locating part (23) on outer conductor (2) inner wall, insulating support (7) press from both sides and locate between locating part (23) and insulating pad (8).