Durable radio frequency connector

Abstract

The utility model relates to a durable radio frequency connector, which belongs to the technical field of connectors and comprises a first outer conductor, a second outer conductor and a locking nut. The first outer conductor is provided with a first through cavity, and a central conductor is arranged in the first through cavity; the second outer conductor is partially arranged in the first through cavity, the second outer conductor is provided with a second through cavity for placing the central conductor, the circumferential side wall of the second outer conductor is provided with a first sealing ring, and the first sealing ring abuts against the end part of the first outer conductor; the locking nut sleeves one end, close to the second outer conductor, of the first outer conductor, and a connecting clamp spring is arranged between the circumferential side wall of the second outer conductor and the circumferential inner wall of the locking nut. According to the radio frequency connector, the connection structure of the outer conductor part is improved, so that the connection structure of the outer conductor part is not influenced when the locking nut is disassembled and assembled, the connection strength and the sealing performance among all parts are enhanced, and the service life of the radio frequency connector is prolonged.

Description

Technical Field

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

[0002] The N-type connector is a radio frequency coaxial connector for coaxial cables. It has a threaded connection mechanism that can be rotated and locked. It is widely used in microwave equipment and digital communication systems to connect radio frequency cables in the radio frequency circuit due to its high reliability and strong vibration resistance. With the deepening development of engineering practice, the use environment faced by radio frequency connectors is becoming more and more complex, including high temperature, high humidity, long sunshine time, and strong salt spray corrosion. Therefore, it is urgent to improve the quality of radio frequency connectors.

[0003] The connection structure of the existing RF connector is that the conductor part and the cable part are welded, and a locking nut part is provided on the circumferential side wall of the conductor part connected to the cable part. At the same time, one end of the conductor part away from the locking nut part is connected to another conductor part, and the tailstock part and the cap part are connected to the other conductor part.

[0004] In response to the above phenomenon, the inventor discovered that when the locking nut needs to be tightened or disassembled, the locking nut will drive the conductor to rotate, which may easily cause the connection between the conductor and another conductor to loosen, and even cause the two groups of conductors to separate. If the two groups of conductors are fixed by riveting points, the coating inside the connector will be damaged. For this reason, the inventor invented a new type of RF connector. Utility Model Content

[0005] The purpose of the utility model is to provide a durable radio frequency connector in view of the deficiencies in the above-mentioned prior art.

[0006] The utility model provides a durable radio frequency connector, which adopts the following technical solution:

[0007] A durable radio frequency connector, comprising:

[0008] A first outer conductor, wherein the first outer conductor is provided with a first through cavity, and a central conductor is arranged in the first through cavity;

[0009] A second outer conductor, wherein the second outer conductor is partially disposed in the first through cavity, the second outer conductor is provided with a second through cavity for inserting the center conductor, a first sealing ring is disposed on a circumferential side wall of the second outer conductor, and the first sealing ring abuts against an end portion of the first outer conductor;

[0010] A locking nut is sleeved on an end of the first outer conductor close to the second outer conductor, and a connecting clamping spring is arranged between the circumferential side wall of the second outer conductor and the circumferential inner wall of the locking nut.

[0011] Preferably, the second outer conductor is press-fitted into the first through cavity of the first outer conductor.

[0012] Preferably, the first outer conductor and the locking nut are both provided with a slot for placing a connecting clamp spring, and the circumferential side wall of the first outer conductor is in a fit with the circumferential inner wall of the locking nut.

[0013] Preferably, a cap is provided at one end of the first outer conductor away from the second outer conductor, and a mounting groove for mounting the cap is provided in the first outer conductor, and the cap is threadedly connected to the mounting groove.

[0014] Preferably, a second sealing ring is placed between the cover cap and the mounting groove, and the second sealing ring abuts against the end of the cover cap and the groove wall of the mounting groove.

[0015] Preferably, the first through cavity is provided with an insulator, and the insulator is sleeved on the central conductor.

[0016] Preferably, a third outer conductor is provided on the side wall of one end of the first outer conductor away from the second outer conductor, a third through cavity is defined in the third outer conductor, the second through cavity is connected to the third through cavity, a tail stock is provided on one end of the third outer conductor away from the first outer conductor, and the tail stock is threadedly connected to the third through cavity.

[0017] Preferably, the third through cavity is provided with a first pressure ring, a second pressure ring, a third sealing ring and a third pressure ring in sequence from the inside to the outside, the first pressure ring abuts against the side wall of the first outer conductor, the third pressure ring abuts against the end wall of the base, the two sides of the second pressure ring abut against the first pressure ring and the third sealing ring respectively, and the side of the third sealing ring facing away from the second pressure ring abuts against the third pressure ring.

[0018] Preferably, the first outer conductor and the third outer conductor are connected by lead soldering.

[0019] In summary, the utility model includes the following beneficial technical effects:

[0020] 1. The utility model installs the second outer conductor in the first through cavity of the first outer conductor, and the second outer conductor is provided with a second through cavity, the center conductor arranged in the first through cavity extends into the second through cavity, and the locking nut is arranged at one end of the first outer conductor close to the second outer conductor. The locking nut does not directly contact the second outer conductor. Therefore, when the tightening nut is operated, the connection relationship between the first outer conductor and the second outer conductor will not be affected, thereby ensuring the connection stability between the first outer conductor and the second outer conductor.

[0021] 2. By arranging a first sealing ring on the circumferential side wall of the second outer conductor, and the first sealing ring abutting against the end of the first outer conductor, the first sealing ring plays a sealing role on the connection between the first outer conductor and the second outer conductor.

[0022] 3. A first pressure ring, a second pressure ring, a third sealing ring and a third pressure ring are arranged in sequence from the inside to the outside of the third through cavity, and a tail seat is threadedly connected to one end of the third through cavity away from the first outer conductor, the first pressure ring abuts against the side wall of the first outer conductor, and the third pressure ring abuts against the end of the tail seat, and the first pressure ring, the second pressure ring, the third sealing ring and the third pressure ring are in a squeezed state between the tail seat and the first outer conductor, thereby enhancing the sealing of the third outer conductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a durable radio frequency connector provided by an embodiment of the utility model.

[0024] Explanation of the reference numerals: 1. first outer conductor; 11. first through cavity; 12. slot; 13. mounting slot; 2. second outer conductor; 21. second through cavity; 22. first sealing ring; 3. third outer conductor; 31. third through cavity; 32. first pressure ring; 33. second pressure ring; 34. third sealing ring; 35. third pressure ring; 4. locking nut; 5. center conductor; 51. insulator; 6. connecting retaining spring; 7. cap; 71. second sealing ring; 8. tail stock. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1 The utility model is described in further detail.

[0026] The utility model embodiment discloses a durable radio frequency connector. Figure 1 , including a first outer conductor 1, a second outer conductor 2, a third outer conductor 3 and a locking nut 4. The first outer conductor 1 is provided with a first through cavity 11, a central conductor 5 located in the first through cavity 11 is fixedly installed on the first outer conductor 1, and an insulator 51 sleeved on the central conductor 5 is fixedly installed inside the first through cavity 11; the second outer conductor 2 is partially installed in the first through cavity 11, the second outer conductor 2 is provided with a second through cavity 21, and the central conductor 5 partially extends into the second through cavity 21; the third outer conductor 3 is installed on the side wall of the first outer conductor 1 away from the end of the second outer conductor 2; the locking nut 4 is installed on the end of the first outer conductor 1 close to the second outer conductor 2, and a connecting spring 6 is installed between the second outer conductor 2 and the locking nut 4. That is, when the locking nut 4 is pre-disassembled or installed, the locking nut 4 acts on the first outer conductor 1, and the locking nut 4 does not directly contact the second outer conductor 2, so the disassembly and assembly process of the locking nut 4 will not affect the connection relationship between the first outer conductor 1 and the second outer conductor 2.

[0027] Reference Figure 1The second outer conductor 2 is press-fitted into the first through cavity 11 of the first outer conductor 1, thereby strengthening the connection relationship between the first outer conductor 1 and the second outer conductor 2; a first sealing ring 22 is provided on the circumferential side wall of the second outer conductor 2, and the first sealing ring 22 abuts against the end wall of the first outer conductor 1 close to the second outer conductor 2, and the first sealing ring 22 seals the connection between the first outer conductor 1 and the second outer conductor 2; the first outer conductor 1 and the locking nut 4 are both provided with a card groove 12 for placing the connecting clamp 6, and the circumferential side wall of the first outer conductor 1 is in a state of contact with the circumferential inner wall of the locking nut 4, thereby enhancing the connection strength between the locking nut 4 and the first outer conductor 1.

[0028] Reference Figure 1 A mounting groove 13 is provided at one end of the first outer conductor 1 away from the second outer conductor 2, a cap 7 is provided in the mounting groove 13, the cap 7 is threadedly connected to the mounting groove 13, and a second sealing ring 71 is placed between the cap 7 and the mounting groove 13, the second sealing ring 71 is in a state of abutting against the end of the cap 7 and the groove wall of the mounting groove 13, and the sealing of the cap 7 and the first outer conductor 1 is enhanced by providing the second sealing ring 71 and the cap 7 being threadedly connected to the mounting groove 13.

[0029] Reference Figure 1 The third outer conductor 3 is connected to the side wall of the first outer conductor 1 by placing lead solder, the third outer conductor 3 is provided with a third through cavity 31, and the third through cavity 31 is connected with the first through cavity 11, and a tail seat 8 is provided at one end of the third outer conductor 3 away from the first outer conductor 1, and the tail seat 8 is threadedly connected to the third through cavity 31.

[0030] Reference Figure 1 The third through cavity 31 is provided with a first pressing ring 32, a second pressing ring 33, a third sealing ring 34 and a third pressing ring 35 from the inside to the outside, wherein the first pressing ring 32 abuts against the side wall of the first outer conductor 1, the third pressing ring 35 abuts against the end wall of the base located at one end of the third through cavity 31, the two sides of the second pressing ring 33 abut against the first pressing ring 32 and the third sealing ring 34 respectively, and the side of the third sealing ring 34 away from the second pressing ring 33 abuts against the third pressing ring 35, that is, the first pressing ring 32, the second pressing ring 33, the third sealing ring 34 and the third pressing ring 35 are all in a state of being squeezed by the tail seat 8 and the first outer conductor 1 to enhance the sealing of the third outer conductor 3; in this embodiment, the threaded ends of the mounting groove 13 and the third through cavity 31 are respectively coated with thread glue, thereby further enhancing the sealing between the mounting groove 13 and the nut, and the third outer conductor 3 and the tail seat 8.

[0031] The implementation principle of a durable radio frequency connector in the embodiment of the utility model is as follows:

[0032] The second outer conductor 2 is installed in the first through cavity 11 of the first outer conductor 1, and the central conductor 5 of the first outer conductor 1 extends into the second through cavity 21 of the second outer conductor 2. The locking nut 4 is arranged at one end of the first outer conductor 1 close to the second outer conductor 2, and the locking nut 4 is connected to the first outer conductor 1 through the connecting clamp 6. Therefore, when the locking nut is operated, the locking nut 4 acts on the first outer conductor 1, and the connection relationship between the first outer conductor 1 and the second outer conductor 2 will not be affected, thereby ensuring the connection stability between the first outer conductor 1 and the second outer conductor 2; and by arranging the first sealing ring 22 at the connection between the second outer conductor 2 and the first outer conductor 1, the sealing performance of the first outer conductor 1 and the second outer conductor 2 is enhanced; the first pressing ring 32, the second pressing ring 33, the third sealing ring 34 and the third pressing ring 35 arranged in the third through cavity 31 are in a state of being squeezed by the tail seat 8 and the first outer conductor 1, and the arrangement of the first pressing ring 32, the second pressing ring 33, the third sealing ring 34 and the third pressing ring 35 enhances the sealing performance of the third outer conductor 3.

[0033] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A durable radio frequency connector, characterized in that: include: A first outer conductor (1), wherein the first outer conductor (1) is provided with a first through cavity (11), and a central conductor (5) is arranged in the first through cavity (11); A second outer conductor (2), wherein the second outer conductor (2) is partially disposed in the first through cavity (11), the second outer conductor (2) is provided with a second through cavity (21) for the central conductor (5) to be placed therein, a first sealing ring (22) is provided on a circumferential side wall of the second outer conductor (2), and the first sealing ring (22) abuts against an end of the first outer conductor (1); A locking nut (4), wherein the locking nut (4) is sleeved on one end of the first outer conductor (1) close to the second outer conductor (2), and a connecting spring (6) is provided between the circumferential side wall of the second outer conductor (2) and the circumferential inner wall of the locking nut (4).

2. A durable radio frequency connector according to claim 1, characterized in that: The second outer conductor (2) is press-fitted into the first through cavity (11) of the first outer conductor (1).

3. A durable radio frequency connector according to claim 1, characterized in that: The first outer conductor (1) and the locking nut (4) are both provided with a slot (12) for placing a connecting clamp (6), and the circumferential side wall of the first outer conductor (1) is in a fitted state with the circumferential inner wall of the locking nut (4).

4. A durable radio frequency connector according to claim 2, characterized in that: A cap (7) is provided at one end of the first outer conductor (1) away from the second outer conductor (2); the first outer conductor (1) is provided with a mounting groove (13) for mounting the cap (7); and the cap (7) is threadedly connected to the mounting groove (13).

5. A durable radio frequency connector according to claim 4, characterized in that: A second sealing ring (71) is placed between the cover cap (7) and the installation groove (13), and the second sealing ring (71) abuts against the end of the cover cap (7) and the groove wall of the installation groove (13).

6. The durable radio frequency connector according to claim 1, characterized in that: The first through cavity (11) is provided with an insulator (51), and the insulator (51) is sleeved on the central conductor (5).

7. The durable radio frequency connector according to claim 1, characterized in that: A third outer conductor (3) is arranged on a side wall of an end of the first outer conductor (1) away from the second outer conductor (2); a third through cavity (31) is provided in the third outer conductor (3); the second through cavity (21) is in a communicating state with the third through cavity (31); a tail seat (8) is arranged on an end of the third outer conductor (3) away from the first outer conductor (1); the tail seat (8) is threadedly connected to the inside of the third through cavity (31).

8. The durable radio frequency connector according to claim 7, characterized in that: The third through cavity (31) is provided with a first pressure ring (32), a second pressure ring (33), a third sealing ring (34) and a third pressure ring (35) in sequence from inside to outside, the first pressure ring (32) abuts against the side wall of the first outer conductor (1), the third pressure ring (35) abuts against the end wall of the base, the two sides of the second pressure ring (33) abut against the first pressure ring (32) and the third sealing ring (34) respectively, and the side of the third sealing ring (34) facing away from the second pressure ring (33) abuts against the third pressure ring (35).

9. The durable radio frequency connector according to claim 7, characterized in that: The first outer conductor (1) and the third outer conductor (3) are connected by lead soldering.

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