Radio frequency connector

Abstract

The utility model discloses a radio frequency connector which comprises a first outer conductor, a cable assembly, a second outer conductor and an inner conductor. A first mounting cavity is formed in the first outer conductor, and a first threaded connection end is formed at one end of the first outer conductor; the cable assembly is mounted in the first mounting cavity; a second mounting cavity is formed in the second outer conductor, and a second threaded connection end in threaded fit with the first threaded connection end is formed at one end of the second outer conductor; the inner conductor is installed in the second installation cavity. The utility model is used for providing the radio frequency connector which is convenient for field installation and simple and reliable in connection mode.

Description

Technical Field

[0001] The utility model relates to the technical field of communications, and in particular to a radio frequency connector. Background Art

[0002] With the rapid development of mobile communication technology, high-power base stations with wide coverage will be built in the wild where the population density is relatively small. High-power base stations require a large number of antenna components. Antenna components include RF connectors. Since the installation and debugging of antenna components are mostly carried out in the wild and mountainous areas, the RF connectors in the antenna components need to meet the requirements of field debugging.

[0003] Existing RF connectors include cable assemblies, and some existing cable assemblies use a welding mechanism to achieve the installation of RF connectors by welding. Although the welding method can ensure that the performance indicators of the cable assembly in the RF connector remain stable, when installing antenna feeder assemblies in the field, it may not be possible to carry welding equipment, which limits the use scenarios of welded cable assemblies. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a radio frequency connector, which is used to provide a radio frequency connector that is easy to install in the field and has a simple and reliable connection method.

[0005] The utility model is realized by the following technical solutions:

[0006] A radio frequency connector, comprising:

[0007] A first outer conductor having a first installation cavity formed therein, and one end of the first outer conductor forming a first threaded connection end;

[0008] A cable assembly is installed in the first installation cavity;

[0009] A second outer conductor having a second installation cavity formed therein, wherein one end of the second outer conductor forms a second threaded connection end for threadably mating with the first threaded connection end;

[0010] The inner conductor is installed in the second installation cavity.

[0011] Furthermore, the first threaded connection end or the second threaded connection end is provided with a first sealing groove, and a first sealing member is accommodated in the first sealing groove; the first sealing member is arranged between the first threaded connection end and the second threaded connection end to seal between the first threaded connection end and the second threaded connection end.

[0012] Furthermore, it also includes a wire clamp, which is provided with an inclined surface; the cable assembly also includes a corrugated tube, the second outer conductor is provided with a tapered surface matching the inclined surface, and one end of the corrugated tube is clamped and fixed by the inclined surface and the tapered surface.

[0013] Furthermore, it also includes a first waterproof part and a second waterproof part. The wire clamp, the first waterproof part and the second waterproof part are arranged in sequence along the axial direction of the first outer conductor. The first waterproof part and the second waterproof part are respectively arranged between the cable assembly and the first outer conductor to respectively seal the cable assembly and the first outer conductor.

[0014] Furthermore, a guiding slope is provided at one end of the wire clamp facing the first waterproof component, and the first waterproof component is provided with a notch opening toward the wire clamp, and the guiding slope is inserted into the notch, and the inner wall forming the notch presses the cable assembly.

[0015] Furthermore, the inner wall forming the notch is provided with a matching inclined surface matching with the guiding inclined surface.

[0016] Furthermore, the cable assembly also includes a cable core wire, a cable foam layer sleeved on the cable core wire, and a cable sheath sleeved on the corrugated tube; the cable sheath is arranged at one end of the corrugated tube away from the second outer conductor; the first waterproof component is arranged between the corrugated tube and the first outer conductor, and the second waterproof component is arranged between the cable sheath and the first outer conductor.

[0017] Furthermore, it also includes a dielectric body, wherein the dielectric body is sleeved on the inner conductor, the second outer conductor is sleeved on the dielectric body, and a second sealing member is provided between the second outer conductor and the dielectric body.

[0018] Furthermore, it also includes a screw sleeve, which is sleeved on the second outer conductor, and a third sealing member is provided between the screw sleeve and the second outer conductor.

[0019] Furthermore, the outer wall of the second outer conductor is also connected with a clamping ring, and the clamping ring can abut against the screw sleeve to clamp the screw sleeve.

[0020] Compared with the prior art, the advantages of the present invention are at least:

[0021] By using the first outer conductor to accommodate the cable assembly, using the second outer conductor to accommodate the inner conductor, and making the first outer conductor and the second outer conductor threaded together, the installation steps of the RF connector can be simplified, and welding is not required, which can facilitate field installation needs; and the method of threading the first outer conductor and the second outer conductor is simple and reliable, and the installation steps of the RF connector can also be relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A partial cross-sectional view of a radio frequency connector according to an embodiment of the present utility model;

[0023] Figure 2 A partial cross-sectional view of a portion of the structure of a radio frequency connector according to an embodiment of the utility model;

[0024] Figure 3 This is a partial cross-sectional view of another part of the structure of the radio frequency connector according to an embodiment of the present invention.

[0025] In the figure: 1, first outer conductor; 11, first installation cavity; 12, first threaded connection end; 121, first sealing groove; 122, first sealing member; 14, first waterproof groove; 15, second waterproof groove; 2, cable assembly; 21, corrugated tube; 22, cable core; 23, cable foaming layer; 24, cable sheath; 3, second outer conductor; 31, second installation cavity; 32, second threaded connection end; 13, tapered surface; 33, snap ring; 34, step portion; 35, snap ring groove; 36, third sealing groove; 4, inner conductor; 5, wire clamp; 51, inclined surface; 52, guide inclined surface; 53, clamping portion; 54, main body; 6, first waterproof member; 61, notch; 62, inner wall; 621, matching inclined surface; 7, second waterproof member; 8, dielectric body; 81, second sealing member; 82, second sealing groove; 9, screw sleeve; 91, third sealing member. DETAILED DESCRIPTION

[0026] The following is a further non-restrictive detailed description of the utility model technical solution in conjunction with the preferred embodiment and its accompanying drawings. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings. In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limitations on the utility model.

[0027] like Figure 1As shown, a radio frequency connector corresponding to a preferred embodiment of the utility model includes a first outer conductor 1, a cable assembly 2, a second outer conductor 3 and an inner conductor 4, and may also include a wire clamp 5, a first waterproof component 6, a second waterproof component 7, a dielectric body 8 and a screw sleeve 9.

[0028] A first installation cavity 11 for accommodating the cable assembly 2 is provided inside the first outer conductor 1, a first threaded connection end 12 is formed at one end of the first outer conductor 1, and a first waterproof groove 14 and a second waterproof groove 15 are formed on the inner wall 62 of the first outer conductor 1. The first waterproof groove 14 and the second waterproof groove 15 are respectively connected to the first installation cavity 11, and the first waterproof groove 14 and the second waterproof groove 15 are sequentially arranged along the axial direction of the first outer conductor 1. The first waterproof groove 14 and the second waterproof groove 15 may be annular grooves extending along the axial direction of the first outer conductor 1.

[0029] The first waterproof member 6 is disposed in the first waterproof groove 14, and a portion of the first waterproof member 6 can protrude from the first waterproof groove 14 to extend into the first installation cavity 11. The second waterproof member 7 is disposed in the second waterproof groove 15, and a portion of the second waterproof member 7 can protrude from the second waterproof groove 15 to extend into the first installation cavity 11. The first waterproof member 6 and the second waterproof member 7 can be waterproof rings, respectively.

[0030] At least a portion of the cable assembly 2 is accommodated in the first installation cavity 11. The cable assembly 2 may include a cable core 22, a cable foam layer 23 sleeved on the cable core 22, a corrugated tube 21 sleeved on the cable foam layer 23, and a cable sheath 24 sleeved on the cable foam layer 23, and the cable assembly 2 is sequentially provided with the cable core 22, the cable foam layer 23, the corrugated tube 21 and the cable sheath 24 from the inside to the outside. The cable sheath 24 is provided at one end of the corrugated tube 21 away from the second outer conductor 3, and one end of the corrugated tube 21 facing the second outer conductor 3 may be exposed relative to the cable sheath 24.

[0031] The corrugated tube 21 can abut against the first waterproof member 6 and press the first waterproof member 6, so that the first waterproof member 6 seals between the corrugated tube 21 and the first outer conductor 1, thereby achieving the first level of waterproofing between the first waterproof member 6 and the cable assembly 2. The cable sheath 24 can abut against the second waterproof member 7 and press the second waterproof member 7, so that the second waterproof member 7 seals between the cable sheath 24 and the first outer conductor 1, thereby achieving the second level of waterproofing between the first outer conductor 1 and the cable assembly 2. By using the first waterproof member 6 and the second waterproof member 7 to achieve multi-level waterproofing between the first outer conductor 1 and the cable assembly 2, the sealing and waterproofing performance between the first outer conductor 1 and the cable assembly 2 is improved, and the IP68 level connection sealing can be achieved between the first outer conductor 1 and the cable assembly 2. Among them, the IP level is the protection level of the housing of the electrical equipment against the intrusion of foreign objects, and the source is the standard IEC 60529 of the International Electrotechnical Commission.

[0032] Further references Figure 1 and Figure 2 , the wire clamp 5 can cooperate with the crests and troughs of the corrugated tube 21. Specifically, the corrugated tube 21 has a wavy structure. The wire clamp 5 may include a clamping portion 53 that can extend to a trough of the corrugated tube 21 and abut against the trough, and a main body portion 54 that can abut against the crest of the corrugated tube 21. The clamping portion 53 of the wire clamp 5 may be formed with an inclined surface 51, and the inclined surface 51 may be in contact with the corrugated tube 21. Among them, the wire clamp 5 can be arranged at one end of the first waterproof part 6 away from the second waterproof part 7, so that the wire clamp 5, the first waterproof part 6, and the second waterproof part 7 can be distributed in sequence along the axial direction of the first outer conductor 1.

[0033] In some specific embodiments, in order to improve the sealing and waterproof performance of the first waterproof member 6 between the first outer conductor 1 and the corrugated tube 21, a guiding slope 52 is provided at one end of the wire clamp 5 facing the first waterproof member 6, and the guiding slope 52 can be formed at one end of the main body 54 of the wire clamp 5 adjacent to the first waterproof member 6. The first waterproof member 6 is provided with a notch 61 opening toward the wire clamp 5, and the first waterproof member 6 includes an inner wall 62 and an outer wall forming the notch 61, the inner wall 62 forming the notch 61 faces the inner side of the first outer conductor 1, and the outer wall forming the notch 61 faces the outer side of the first outer conductor 1. The guiding bevel 52 can be inserted into the notch 61 of the first waterproof member 6, and the inner wall 62 forming the notch 61 will abut against the guiding bevel 52. As the guiding bevel 52 gradually extends into the notch 61, the guiding bevel 52 will gradually guide the inner wall 62 forming the notch 61 to move toward the inner side of the first outer conductor 1, so that the inner wall 62 forming the notch 61 can be pressed against the cable assembly 2 located inside the first outer conductor 1, specifically, against the corrugated tube 21. The inner wall 62 forming the notch 61 is guided by the guiding bevel 52 to press against the corrugated tube 21, so as to improve the sealing and waterproof performance between the first waterproof member 6 and the corrugated tube 21, thereby improving the sealing connection performance between the first outer conductor 1 and the corrugated tube 21.

[0034] The inner wall 62 forming the notch 61 may form a matching bevel 621 matching with the guide bevel 52. When the guide bevel 52 is inserted into the notch 61 of the first waterproof member 6, the guide bevel 52 abuts against the matching bevel 621, and the matching bevel 621 may guide the guide bevel 52 so that the guide bevel 52 is guided into the notch 61, and the matching between the matching bevel 621 and the guide bevel 52 may also make the guiding process of the guide bevel 52 to the inner wall 62 forming the notch 61 more stable.

[0035] A second installation cavity 31 for accommodating the inner conductor 4 is provided inside the second outer conductor 3, and a second threaded connection end 32 is formed at one end of the second outer conductor 3. The second threaded connection end 32 can be threadedly matched with the first threaded connection end 12 to realize the connection between the two parts of the RF connector. Specifically, when the second threaded connection end 32 of the second outer conductor 3 is threadedly connected with the first threaded connection end 12 of the first outer conductor 1, the first installation cavity 11 is connected with the second installation cavity 31, and the cable assembly 2 located in the first installation cavity 11, specifically the cable core wire 22 in the cable assembly 2, is connected with the inner conductor 4 located in the second installation cavity 31. Among them, the first threaded connection end 12 can be provided with an external thread, and the second threaded connection end 32 is provided with an internal thread; or, the first threaded connection end 12 is provided with an internal thread, and the second threaded connection end 32 is provided with an external thread.

[0036] By adopting the threaded connection method of the first outer conductor 1 and the second outer conductor 3, welding is not required, and it can be suitable for field installation, and the threaded connection method is simple and reliable to ensure the performance of the RF connector. The threaded connection method can make it possible to simply and conveniently disassemble the RF connector when the internal parts of the RF connector need to be replaced, thereby achieving the replacement or maintenance of the internal parts of the RF connector (such as the first waterproof part 6 and the second waterproof part 7), reducing the maintenance cost of the RF connector.

[0037] In addition, some existing RF connectors are formed by combining multiple parts, but the RF connector generally requires three or more parts to be combined, the assembly steps are relatively complicated, and the assembly is relatively difficult. In the present application, the first outer conductor 1 is connected to the cable assembly 2 to form the first part, and the second outer conductor 3 is connected to the inner conductor 4 to form the second part. The first part and the second part can be matched by the threaded connection of the first outer conductor 1 and the second outer conductor 3, and the assembly of the RF connector is realized, so the structure and assembly steps of the RF connector are relatively simple.

[0038] In some specific embodiments, after the existing assembled RF connector is installed, the cable assembly 2 inside the RF connector and the main body of the RF connector may have dynamic intermodulation, that is, there may be movement between the cable assembly 2 and the main body of the RF connector. In order to strengthen the connection between the cable assembly 2 and the main body of the RF connector, the second outer conductor 3 of the present application is also provided with a tapered surface 13 that matches the inclined surface 51, for example, the inclined surface 51 is parallel to the tapered surface 13. When the second outer conductor 3 is threadedly connected to the first outer conductor 1, one end of the corrugated tube 21 will be clamped between the inclined surface 51 and the tapered surface 13 to achieve fixation of the corrugated tube 21, thereby achieving fixation between the cable assembly 2 and the first outer conductor 1 and the second outer conductor 3, preventing the cable assembly 2 from moving inside the first outer conductor 1, and improving the stability of the RF connector.

[0039] In some specific embodiments, in order to seal the connection between the first outer conductor 1 and the second outer conductor 3, a first seal 122 may be provided between the first outer conductor 1 and the second outer conductor 3. Specifically, the first threaded connection end 12 may be provided with a first sealing groove 121, in which the first sealing groove 121 accommodates the first sealing member 122, a portion of the first sealing member 122 protrudes from the first sealing groove 121 and abuts against the second threaded connection end 32, so that the first sealing member 122 seals between the first threaded connection end 12 and the second threaded connection end 32; or, the second threaded connection end 32 may be provided with a first sealing groove 121, in which the first sealing member 122 is accommodated, a portion of the first sealing member 122 protrudes from the first sealing groove 121 and abuts against the first threaded connection end 12, so that the first sealing member 122 seals between the first threaded connection end 12 and the second threaded connection end 32. The first seal 122 may be an O-ring.

[0040] Further references Figure 3 , the dielectric body 8 can be fixedly sleeved on the inner conductor 4, and the dielectric body 8 and the inner conductor 4 can be accommodated in the second installation cavity 31 of the second outer conductor 3, that is, the inner conductor 4, the dielectric body 8 and the second outer conductor 3 are arranged in sequence from the inside to the outside. The dielectric body 8 can abut against the inner wall 62 of the second outer conductor 3. In order to seal between the dielectric body 8 and the second outer conductor 3, a second sealing member 81 is arranged between the dielectric body 8 and the second outer conductor 3. Specifically, a second sealing groove 82 is opened on the outer wall of the dielectric body 8, and the second sealing groove 82 is used to accommodate the second sealing member 81, and a part of the second sealing member 81 protrudes from the second sealing groove 82 and abuts tightly against the inner wall 62 of the second outer conductor 3 to achieve sealing between the dielectric body 8 and the second outer conductor 3. Among them, the second sealing member 81 can be an O-ring.

[0041] In some specific embodiments, in order to locate the position of the dielectric body 8, a step portion 34 is provided in the second outer conductor 3. After the dielectric body 8 is connected to the inner conductor 4, it can be placed together in the second installation cavity 31 of the second outer conductor 3, and the dielectric body 8 can abut against the step portion 34 of the second outer conductor 3 to limit the position of the dielectric body 8, thereby realizing the positioning of the position of the dielectric body 8.

[0042] The screw sleeve 9 is sleeved on the second outer conductor 3, and in order to locate the position of the screw sleeve 9, the outer wall of the second outer conductor 3 is also connected with a snap ring 33. Specifically, the outer wall of the second outer conductor 3 is provided with a snap ring groove 35, the snap ring groove 35 is used to accommodate the snap ring 33, and a part of the snap ring 33 protrudes from the snap ring groove 35, and the part of the snap ring 33 protruding from the snap ring groove 35 can be used to abut against the screw sleeve 9 to limit and clamp the screw sleeve 9.

[0043] In some specific embodiments, a third seal 91 is further provided between the screw sleeve 9 and the second outer conductor 3. Specifically, the second outer conductor 3 is provided with a third seal groove 36, the third seal groove 36 is used to accommodate the third seal 91, and a portion of the third seal 91 protrudes outward from the third seal groove 36. The third seal 91 may be an O-ring.

[0044] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A radio frequency connector, characterized in that: include: A first outer conductor (1) has a first mounting cavity (11) formed inside, and one end of the first outer conductor (1) forms a first threaded connection end (12); A cable assembly (2) installed in the first installation cavity (11); A second outer conductor (3) is provided with a second installation cavity (31) therein, and one end of the second outer conductor (3) forms a second threaded connection end (32) for threadably engaging with the first threaded connection end (12); An inner conductor (4) is installed in the second installation cavity (31).

2. The radio frequency connector according to claim 1, characterized in that: The first threaded connection end (12) or the second threaded connection end (32) is provided with a first sealing groove (121), and a first sealing member (122) is accommodated in the first sealing groove (121); the first sealing member (122) is arranged between the first threaded connection end (12) and the second threaded connection end (32) to seal between the first threaded connection end (12) and the second threaded connection end (32).

3. The radio frequency connector according to claim 1, characterized in that: It also includes a wire clamp (5), the wire clamp (5) being provided with an inclined surface (51); the cable assembly (2) also includes a corrugated tube (21), the second outer conductor (3) being provided with a tapered surface (13) matching the inclined surface (51), and one end of the corrugated tube (21) being clamped and fixed by the inclined surface (51) and the tapered surface (13).

4. The radio frequency connector according to claim 3, characterized in that: The cable assembly (5) further comprises a first waterproof component (6) and a second waterproof component (7), wherein the wire clamp (5), the first waterproof component (6) and the second waterproof component (7) are arranged in sequence along the axial direction of the first outer conductor (1), and the first waterproof component (6) and the second waterproof component (7) are respectively arranged between the cable assembly (2) and the first outer conductor (1) to respectively seal the cable assembly (2) and the first outer conductor (1).

5. The radio frequency connector according to claim 4, characterized in that: A guiding slope (52) is provided at one end of the wire clamp (5) facing the first waterproof component (6); the first waterproof component (6) is provided with a notch (61) opening toward the wire clamp (5); the guiding slope (52) is inserted into the notch (61) and causes an inner wall (62) forming the notch (61) to press against the cable assembly (2).

6. The radio frequency connector according to claim 5, characterized in that: The inner wall (62) forming the notch (61) is provided with a matching inclined surface (621) matching with the guiding inclined surface (52).

7. The radio frequency connector according to claim 4, characterized in that: The cable assembly (2) further comprises a cable core wire (22), a cable foam layer (23) sleeved on the cable core wire (22), and a cable sheath (24) sleeved on the corrugated tube (21); the cable sheath (24) is arranged at an end of the corrugated tube (21) away from the second outer conductor (3); the first waterproof component (6) is arranged between the corrugated tube (21) and the first outer conductor (1), and the second waterproof component (7) is arranged between the cable sheath (24) and the first outer conductor (1).

8. The radio frequency connector according to claim 1, characterized in that: It also comprises a dielectric body (8), wherein the dielectric body (8) is sleeved on the inner conductor (4), the second outer conductor (3) is sleeved on the dielectric body (8), and a second sealing member (81) is provided between the second outer conductor (3) and the dielectric body (8).

9. The radio frequency connector according to claim 8, characterized in that: It also comprises a screw sleeve (9), wherein the screw sleeve (9) is sleeved on the second outer conductor (3), and a third sealing member (91) is provided between the screw sleeve (9) and the second outer conductor (3).

10. The radio frequency connector according to claim 9, characterized in that: The outer wall of the second outer conductor (3) is also connected to a clamping ring (33), and the clamping ring (33) can abut against the screw sleeve (9) to clamp the screw sleeve (9).

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