Coaxial radio frequency connector

Abstract

According to the technical scheme, the coaxial radio frequency connector is characterized in that the coaxial radio frequency connector comprises a male head and a female head, the male head comprises a male head shell, a conical lining, a tail end cover and a cable, and a cable inner core is arranged at the top end of the cable; the male head shell is sequentially provided with a cavity A, a through hole matched with a cable inner core and a cavity B matched with a cable from one end to the other end, the inner wall of the cavity B is provided with an inclined face B, the conical lining is matched with the inclined face B, the cable is installed in the cavity B, and the tail end cover is connected with the right end of the male head shell. When the tail end cover is not tightly covered, the cable can still freely rotate in the cavity B, and internal stress generated by rotation of the front end cannot be accumulated during connection and use, so that the tail winding phenomenon of spontaneous twisting and winding of the cable is avoided. And the conical lining and the inclined surface B are matched and mounted in the cavity B, so that when the tail end cover is tightly covered, the male head shell and the cable are reliably matched and do not rotate and slide at will.

Description

Technical Field

[0001] The utility model relates to the technical field of communication equipment, and more specifically, to a coaxial radio frequency connector. Background Art

[0002] At present, with the vigorous development of communication technologies, current communication devices, such as mobile phone terminals, computer networks, satellite navigation and other complete machine devices, exhibit the characteristics of multi-functionality and miniaturization. The connection between modules and between cabinets is becoming more and more inclined to small pitch, small volume and high frequency. Radio frequency connectors have thus been widely used.

[0003] At present, Chinese Patent No. CN201922226952.6 discloses a screw-connected radio frequency coaxial connector, which includes a male connector and a female connector. The male connector includes a male outer shell, a male inner conductor and a pin. One end of the pin is arranged inside the male inner conductor, and a locking screw hole is provided on the male outer shell corresponding to the other end of the pin. A locking washer is provided on the inner wall of the end of the male connector where the locking screw hole is located; the female connector includes a female outer shell, a female inner conductor and a jack. One end of the female connector is provided with a jack, and a spring piece is suspended inside the jack. The spring piece is parallel to the orifice of the jack, and a spring is connected between the spring piece and the female inner conductor.

[0004] However, there are still some defects in the above-mentioned existing technologies. Because of the screw connection, during the connection and use, it is easy to occur that due to the rotation of the front end, the internal stress continuously accumulates and is difficult to release, which causes the phenomenon of tail winding where the tail cable spontaneously twists and winds. The use is not convenient, and the bending angle of the wire tube designed at the tail of the female head makes the wire tube prone to fatigue and easy to be damaged, reducing the service life. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the utility model aims to provide a coaxial radio frequency connector.

[0006] To achieve the above object, the utility model provides the following technical solutions: It includes a male head and a female head. The female head includes a female outer shell, a female internal conductor and a spring piece. The female internal conductor and the spring piece are connected to each other and arranged inside the female outer shell. The male head includes a male outer shell, a tapered bushing, a tail end cover and a cable. The top of the cable is provided with a cable inner core. The male outer shell is sequentially provided with a cavity A, a through hole adapted to the cable inner core, and a cavity B adapted to the cable from one end to the other end. The cavity A is provided with an internal thread adapted to the female head thread. The through hole communicates the cavity A and the cavity B. The inner wall of the cavity B is provided with an inclined surface B adapted to the outer wall of the tapered bushing. The tapered bushing is matched with the inclined surface B. The cable is installed inside the cavity B. The tail end cover is connected to the right end of the male outer shell. The tail end cover is a flange, and the inner wall of the tail end cover is provided with an inclined surface A.

[0007] The present utility model is further configured such that: the conical bushing includes a bushing sheet body and a bushing base, the bushing sheet body is disposed on the bushing base, saw-shaped protrusions are provided on the inner wall of the bushing sheet body, and a bushing platform is provided on the outer wall of the bushing sheet.

[0008] The present utility model is further configured such that: the conical bushing can be disassembled into two equal halves.

[0009] The present utility model is further configured such that: the male head housing and the conical bushing are in interference fit.

[0010] The present utility model is further configured such that: protrusions are provided on the outer surface of the male head housing.

[0011] The present utility model is further configured such that: the conical bushing is made of an elastic metal material.

[0012] In summary, the present utility model has the following beneficial effects: when the tail end cap is not tightly closed, the cable can still rotate freely in cavity B. When in use, the internal stress generated by the rotation of the head end will not accumulate, thus avoiding the phenomenon of tail entanglement where the cable twists and winds spontaneously.

[0013] By being installed in the cavity B in cooperation with the inclined surface B through the conical bushing, when the tail end cap is tightly closed, the cooperation between the male head housing and the cable is reliable, so that the cable is relatively fixed in the cavity B and does not rotate or slide randomly.

[0014] The inclined surface A enables the cable to have a relatively small degree of bending, reducing the influence of the bending on the cable. Description of the Drawings

[0015] Figure 1 is the disassembled structure schematic diagram of the male head in this embodiment;

[0016] Figure 2 is the structure schematic diagram of the female head in this embodiment;

[0017] Figure 3 is the cooperation structure schematic diagram of this embodiment;

[0018] Figure 4 is the three-dimensional structure schematic diagram of the conical bushing in this embodiment;

[0019] Reference Numerals: 1, male head housing; 11, cavity A; 12, through hole; 13, cavity B; 131, inclined surface B; 14, protrusion; 15, internal thread; 2, conical bushing; 21, bushing sheet body; 211, saw-shaped protrusion; 22, bushing base; 23, bushing platform; 3, tail end cap; 31, inclined surface A; 4, cable; 41, cable inner core; 5, female head housing; 51, female head internal conductor; 52, spring contact. Detailed Description of the Embodiment

[0020] The following further elaborates on the present utility model in conjunction with the accompanying drawings.

[0021] This embodiment discloses a coaxial radio frequency connector, as Figures 1 to 2 shown, which includes a male head and a female head. The female head includes a female head housing 5, a female head internal conductor 51, and a spring leaf 52. The female head internal conductor 51 and the spring leaf 52 are connected to each other and disposed within the female head housing 5. The male head includes a male head housing 1, a tapered bushing 2, a tail end cap 3, and a cable 4. The top end of the cable 4 is provided with a cable inner core 41. The male head housing 1 is sequentially provided with a cavity A11, a through hole 12 adapted to the cable inner core 41, and a cavity B13 adapted to the cable 4 from one end to the other end. The cavity A11 is provided with an internal thread 15 adapted to the female head thread. The male head is threadedly connected to the female head through the thread provided in the cavity A11, which is convenient and reliable.

[0022] Furthermore, the through hole 12 communicates the cavity A11 and the cavity B13. The cable inner core 41 passes through the through hole 12. The inner wall of the cavity B13 is provided with an inclined surface B131 adapted to the outer wall of the tapered bushing 2. The tapered bushing 2 is engaged with the inclined surface B131. The cable 4 is installed within the cavity B13. The tail end cap 3 is connected to the right end of the connector. When the tail end cap 3 is tightened, it presses the tapered bushing 2, causing the tapered bushing 2 to have a tendency to move inward under the axial pressure of the tail end cap 3. Since the mating surface between the male head housing 1 and the tapered bushing 2 is the inclined surface B131, the tapered bushing 2 is subjected to a radial pressure, thereby generating a radial pressure on the cable 4, enabling the tapered bushing 2 to clamp the cable 4 well. Therefore, the tail end cap 3 can provide a stable and firm mechanical connection when tightened.

[0023] As Figure 3 shown, the male head and the female head are threadedly connected. The cable inner core 41 extends out of the male head housing through the through hole and accesses the female head housing 5. The female head internal conductor 51 is connected to the spring leaf 52, enabling the cable inner core 41 to extend into the female head housing 5 and contact the spring leaf 52 to achieve circuit conduction. Since the spring leaf 52 has elasticity and can expand and contract within a certain space, the connection of the cable inner core 41 and the realization of stable circuit conduction do not require a fixed distance, but rather a relatively elastic space, such that even if there is a slight displacement in the connection path between the male head and the female head, it will not affect the connection current conduction of the connector.

[0024] Furthermore, the tail end cap 3 is a flange, and the tightening process is simple and convenient. The inner wall of the tail end cap 3 is provided with an inclined surface A31. When the tail of the cable 4 is bent, the inclined surface A31 can play a transitional role, reducing the degree of bending when the cable 4 is bent and increasing the service life of the cable 4.

[0025] AsFigure 4 As shown, the conical bushing 2 includes a bushing sheet body 21 and a bushing base 22. The bushing sheet body 21 is arranged on the bushing base 22. A saw-tooth protrusion 211 is arranged on the inner wall of the bushing sheet body 21, increasing the roughness between the conical bushing 2 and the cable 4, so that stronger friction can be obtained under the same radial pressure, making the connection between the conical bushing 2 and the cable 4 more reliable. A bushing platform 23 is arranged on the outer wall of the bushing sheet. The bushing platform 23 cooperates with the inclined surface B131, restricting the rotation between the bushing and the male head housing 1 and obtaining a more stable connection state.

[0026] Furthermore, the conical bushing 2 can be split into two equal parts. When in use, there is no need to pre-pass the cable 4 through the assembled conical bushing 2. The cable 4 can be directly arranged in the cavity B13, and then the split conical bushing 2 can be installed into the cavity B13, which is convenient for operation; because there is a certain fitting gap between the split parts of the conical bushing 2, the conical bushing 2 can achieve lower production precision, reduce production costs, and only the damaged part needs to be replaced when part of it is damaged, saving costs.

[0027] Furthermore, the male head housing 1 and the conical bushing 2 are in interference fit, so that during the assembly process, the inclined surface B131 can squeeze the conical bushing 2, causing a certain deformation of the bushing sheet body 21 arranged on the conical bushing 2, increasing the radial pressure generated between the conical bushing 2 and the cable 4, thereby obtaining greater friction, enabling the conical bushing 2 to better bite the cable 4, and making the connection between the conical bushing 2 and the cable 4 more firm and reliable.

[0028] Furthermore, a protrusion 14 is arranged on the outer surface of the male head housing 1. The male and female heads are connected by thread connection. When assembling the male and female heads, it is necessary to hold the male and female heads and make them rotate relative to each other. The protrusion 14 is a hexagonal nut, making the male head more convenient to hold and rotate.

[0029] Furthermore, the conical bushing 2 is made of elastic metal material, such as beryllium copper or phosphor bronze and other elastic materials, making the conical bushing 2 have good elasticity and not easy to fatigue and break. It can ensure that when the conical bushing 2 generates radial force on the coaxial cable 4, the cable 4 will not be damaged, improving the electrical performance of the overall product.

[0030] The working principle of the present utility model

[0031] Put the cable 4 through the central hole of the tail end cover 3. Since the inner diameter of the tail end cover 3 is provided with an inclined plane A31, it is very convenient to penetrate from the large hole. Extend the cable 4 into the cavity B13. The cavity B13 is provided with an inclined plane B131. It is very convenient for the cable 4 to extend into the cavity B13 from the wide-mouth end of the inclined plane B131. Take out two conical bushings 2 in a group. Match the bushing platform 23 provided on the outer surface of the conical bushing 2 with the corresponding inclined plane B131. Since the conical bushing 2 is composed of two semi-circles, the conical bushing 2 can be separated and placed into the cavity B13 one by one, which is very convenient. Pre-tighten the tail end cover 3 so that the positions of all components are roughly fixed and no longer move randomly. At this time, the cable 4 can still rotate. Fix the male head and the female head by rotating threads. Since the cable 4 can still rotate at this time, the rotation between the male head and the female head will not cause the tail-end cable 4 to rotate and accumulate internal stress, thus avoiding the phenomenon of tail winding. After ensuring that the connection between the male head and the female head is reliable, tighten the tail end cover 3 so that the cable 4 is fixed. Since the female head is provided with a spring shrapnel 52, the inner core of the cable 4 can obtain a reliable connection.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coaxial radio frequency connector, comprising a male head and a female head. The female head includes a female head housing (5), a female head inner conductor (51), and a spring contact (52). The female head inner conductor (51) and the spring contact (52) are connected to each other and disposed within the female head housing (5), and is characterized in that: The male connector comprises a male connector shell (1), a conical bushing (2), a tail end cap (3), and a cable (4). The top of the cable (4) is provided with a cable core (41). The male connector shell (1) is provided with a cavity A (11), a through hole (12) adapted to the cable core (41), and a cavity B (13) adapted to the cable (4) in sequence from one end to the other end. The cavity A (11) is provided with an internal thread (15) adapted to the female connector thread. The through hole (12 ) connects cavity A (11) and cavity B (13), the inner wall of cavity B (13) is provided with a slope B (131) adapted to the outer wall of the conical bushing (2), the conical bushing (2) cooperates with the slope B (131), the cable (4) is installed in the cavity B (13), the tail end cover (3) is connected to the right end of the male shell (1), the tail end cover (3) is a flange, and the inner wall of the tail end cover (3) is provided with a slope A (31).

2. The coaxial radio frequency connector according to claim 1, characterized in that: The conical bushing (2) comprises a bushing sheet (21) and a bushing base (22); the bushing sheet (21) is arranged on the bushing base (22); the inner wall of the bushing sheet (21) is provided with a saw-shaped protrusion (211); and the outer wall of the bushing sheet is provided with a bushing platform (23).

3. The coaxial radio frequency connector according to claim 2, wherein: The conical bushing (2) can be split into two halves of equal size.

4. A coaxial radio frequency connector according to claim 1, characterized in that: The male shell (1) and the tapered bushing (2) are in interference fit.

5. A coaxial radio frequency connector according to claim 1, characterized in that: The outer surface of the male housing (1) is provided with a protrusion (14).

6. The coaxial radio frequency connector according to claim 1, characterized in that: The tapered bushing (2) is made of elastic metal material.

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