Anti-reversion threaded radio frequency coaxial connector
By introducing expansion joints and elastic buffer elements into the threaded RF coaxial connector, the stability problems caused by temperature changes and mechanical shocks are solved, thereby achieving connector stability and extended lifespan.
Patent Information
- Application Number
- CN202423279823.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Dimensional fluctuations caused by temperature changes gradually erode the stability of connectors and affect their service life, especially in outdoor high-altitude environments, where connector materials may become over-tightened or loose due to thermal expansion and contraction.
An anti-reverse threaded RF coaxial connector was designed, comprising a male contact, an anti-reverse device, a female contact, and an expansion joint. The expansion joint contains a bellows and an elastic buffer element. The expansion and contraction of the bellows and the deformation of the elastic buffer element compensate for dimensional changes and energy absorption caused by temperature changes and mechanical shocks.
It effectively compensates for dimensional changes caused by temperature variations, reduces mechanical shock damage to the connector structure, extends service life, and improves the stability and reliability of the connector.
Smart Images
Figure CN223680483U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to radio frequency coaxial connector technical field, concretely is a threaded radio frequency coaxial connector of anti-reverse. BACKGROUND
[0002] The threaded radio frequency coaxial connector of anti-reverse is a connector for radio frequency signal transmission, has a threaded structure like ordinary radio frequency coaxial connectors, realizes connection through the thread engagement between the male head and the female head, and adds an anti-reverse mechanism to the conventional threaded radio frequency coaxial connector to effectively limit the reverse rotation of the threaded sleeve frame.
[0003] The threaded radio frequency coaxial connector of anti-reverse can effectively prevent the loosening and reverse rotation of the connector under harsh working conditions such as high-frequency vibration and impact, ensure the continuity and stability of signal transmission, reduce the risk of equipment failure, and improve the reliability of the entire system.
[0004] The threaded radio frequency coaxial connector of anti-reverse is used for connecting the antenna and the feeder at the top of a communication base station tower, which is usually located outdoors at a high altitude and is affected by strong winds, rain and snow, temperature changes, and other natural factors. In the outdoor high-altitude environment, the temperature difference between day and night and between seasons is large, which causes the thermal expansion and cold contraction of the connector material to be significant. During cold weather, the metal material shrinks, which easily leads to excessive connection tightening and additional pressure on the internal components, possibly causing deformation or damage to the components. During hot weather, the expansion of the material can cause the connection to loosen. Over time, the size fluctuation derived from temperature changes gradually erodes the stability of the connector and affects its service life.
[0005] Therefore, the threaded radio frequency coaxial connector of anti-reverse is proposed to solve the above problems. Utility Model Content
[0006] The utility model aims to provide a threaded radio frequency coaxial connector of anti-reverse to solve the problem of size fluctuation derived from temperature changes gradually eroding the stability of the connector and affecting its service life.
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0008] The utility model provides an anti-reverse thread radio frequency coaxial connector, including male contact piece, anti-reverse device and female contact piece one end fixedly connected with anti-reverse device of male contact piece, the one end spiral connection of female contact piece is close to anti-reverse device of male contact piece, the inboard mounting of female contact piece has expansion joint, one end fixedly connected with connecting wire of male contact piece and female contact piece, the outboard mounting of connecting wire has protective sleeve, the expansion joint includes end connecting ring, the one side of end connecting ring is opened with damping groove, the inboard mounting of damping groove has male contact piece one end, the other side fixedly connected with bellow of end connecting ring, the center position of end connecting ring is opened with installation through -hole, the outboard opening of bellow has corrugated groove, the other end fixedly connected with bottom connecting ring of bellow, the inboard fixedly connected with elastic buffer element of bellow through the mode of sticking, the elastic buffer element includes protective outer layer, the inboard fixedly connected with damping buffer layer of protective outer layer, the inboard fixedly connected with core elastic layer of damping buffer layer.
[0009] As the further optimization of the utility model, the expansion joint is installed at the middle position of the female contact piece, the expansion joint is provided as a hollow cylinder, the two ends of the expansion joint are tightly attached to one end of the female contact piece and one end of the male contact piece, and the expansion joint is arranged between the female contact piece and the male contact piece.
[0010] As the further optimization of the utility model, the installation through-hole is provided in a cylindrical shape, the installation through-hole passes through the center positions of the end connecting ring, the bellow and the bottom connecting ring, and the installation through-hole is installed at one end of the female contact piece.
[0011] As the further optimization of the utility model, the damping groove is arranged on one side of the end connecting ring, one end of the male contact piece is installed inside the damping groove, one end of the male contact piece is tightly attached to the inside of the damping groove, the end connecting ring and the bottom connecting ring are both arranged at the two ends of the bellow, and the end connecting ring and the bottom connecting ring are parallel to each other.
[0012] As the further optimization of the utility model, the corrugated groove is arranged on the outside of the bellow, the corrugated groove is in a periodic wave shape, the wave crests and wave troughs of the corrugated groove are alternately arranged along the axial direction, and the corrugated groove is in a U shape.
[0013] As the further optimization of the utility model, a plurality of elastic buffer elements are arranged, the elastic buffer elements are uniformly and equidistantly distributed on the inside of the bellow, the elastic buffer elements are provided in the shape of a spiral spring, the elastic buffer elements are arranged in the circumferential direction with the installation through-hole as the axis, and the two ends of the elastic buffer elements are fixed to the inner wall of the bellow in a bonding manner.
[0014] As the further optimization of the utility model, wherein: the protective outer layer, the damping buffer layer and the core elastic layer are all spiral, the protective outer layer and the damping buffer layer are annular in vertical section, the outer side of the damping buffer layer is close to the surface of the core elastic layer and the protective outer layer.
[0015] Compared with the prior art, the utility model has the beneficial effects that:
[0016] In the utility model, the bellows of the expansion joint can stretch and contract when the temperature changes, effectively compensating the size change of the male contact and the female contact due to thermal expansion and cold contraction, and when the connector is impacted by external mechanical force, such as the impact force generated by the vibration of the antenna due to strong wind on the top of the communication base station tower, the elastic buffer element of the expansion joint can play a buffering role, preventing damage to the internal structure caused by external impact, thereby reducing the impact of the impact on the overall connector structure and prolonging the service life of the connector. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the overall structure schematic view of the utility model;
[0018] Figure 2 It is the overall structure schematic view of the expansion joint of the utility model;
[0019] Figure 3 It is the cross section structure schematic view of the bellows of the utility model;
[0020] Figure 4 It is the overall structure schematic view of the elastic buffer element of the utility model;
[0021] Figure 5 It is the cross section structure schematic view of the protective outer layer of the utility model.
[0022] In the drawing: 1, male contact;
[0023] 2, anti-reverse device;
[0024] 3, female contact;
[0025] 4, expansion joint; 41, end connecting ring; 42, damping groove; 43, mounting through hole; 44, bellows; 45, corrugated groove; 46, bottom connecting ring; 47, elastic buffer element; 471, protective outer layer; 472, damping buffer layer; 473, core elastic layer;
[0026] 5, protective sleeve;
[0027] 6, connecting line. DETAILED DESCRIPTION
[0028] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0029] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.
[0030] Please refer to Figures 1-5 The present application provides a technical scheme:
[0031] A reverse-preventing threaded radio frequency coaxial connector, comprising a male contact 1, a reverse-preventing device 2 and a female contact 3, the male contact 1 is fixedly connected with the reverse-preventing device 2 at one end, the male contact 1 is spirally connected with the female contact 3 at one end close to the reverse-preventing device 2, the female contact 3 is internally provided with an expansion joint 4, one end of the male contact 1 and the female contact 3 is fixedly connected with a connecting wire 6, and the connecting wire 6 is externally provided with a protective sleeve 5; the expansion joint 4 comprises an end connecting ring 41, the end connecting ring 41 is provided with a damping groove 42 at one side, one end of the male contact 1 is internally provided in the damping groove 42, the end connecting ring 41 is fixedly connected with a corrugated pipe 44 at the other side, an installation through hole 43 is formed at the center position of the end connecting ring 41, the corrugated pipe 44 is externally provided with a corrugated groove 45, the corrugated pipe 44 is fixedly connected with a bottom connecting ring 46 at the other end, and the corrugated pipe 44 is fixedly connected with an elastic buffer element 47 internally by means of bonding; the elastic buffer element 47 comprises a protective outer layer 471, the protective outer layer 471 is fixedly connected with a damping buffer layer 472 internally, and the damping buffer layer 472 is fixedly connected with a core elastic layer 473 internally.
[0032] As a further embodiment of the above technical scheme: the corrugated groove 45 is arranged on the outer side of the corrugated pipe 44, the corrugated groove 45 is in a periodic wave shape, the wave crests and wave troughs of the corrugated groove 45 are alternately arranged along the axial direction, the shape of the corrugated groove 45 is U-shaped, the existence of the corrugated groove 45 increases the flexibility and elasticity of the corrugated pipe 44, the corrugated pipe 44 can be deformed under smaller external force, and can better adapt to complex working environments;
[0033] As a further implementation of the above technical solution: the expansion joint 4 is arranged at the middle position of the female contact 3, the expansion joint 4 is arranged as a hollow cylinder, the two ends of the expansion joint 4 are in close contact with one end of the female contact 3 and one end of the male contact 1, and the expansion joint 4 is arranged between the female contact 3 and the male contact 1; the expansion joint 4 can expand and contract when the temperature changes, effectively compensating for the size change of the male contact 1 and the female contact 3 due to thermal expansion and contraction.
[0034] As a further implementation of the above technical solution: the protective outer layer 471, the damping buffer layer 472 and the core elastic layer 473 are all spiral-shaped, the vertical cross-section of the protective outer layer 471 and the damping buffer layer 472 is annular, the outer side of the damping buffer layer 472 is in close contact with the surface of the core elastic layer 473 and the protective outer layer 471, and the damping buffer layer 472 is closely combined with the core elastic layer 473 and works cooperatively, so that the size of energy dissipation can be adjusted according to the deformation degree of the core elastic layer 473, and the elastic buffer element 47 can have good buffering performance under different stress conditions.
[0035] As a further implementation of the above technical solution: the damping groove 42 is arranged on one side of the end connecting ring 41, one end of the male contact 1 is arranged in the inner side of the damping groove 42, and the one end of the male contact 1 is in close contact with the inner side of the damping groove 42; the end connecting ring 41 and the bottom connecting ring 46 are both arranged at the two ends of the corrugated pipe 44, and are parallel to each other; when the connector is subjected to vibration or impact, the interaction between the male contact 1 in the damping groove 42 and the damping groove 42 can consume part of the energy, reducing the influence of vibration and impact on the connection part.
[0036] As a further implementation of the above technical solution: the mounting through hole 43 is arranged in a cylindrical shape, and the mounting through hole 43 passes through the center positions of the end connecting ring 41, the corrugated pipe 44 and the bottom connecting ring 46; the mounting through hole 43 is arranged at one end of the female contact 3, and the arrangement of the mounting through hole 43 facilitates the installation and positioning of the expansion joint 4 on the female contact 3.
[0037] As a further implementation of the above technical solution: the elastic buffer element 47 is arranged in a plurality of numbers, and the elastic buffer elements 47 are uniformly and equidistantly distributed on the inner side of the corrugated pipe 44; the elastic buffer element 47 is arranged in the shape of a spiral spring, and the elastic buffer element 47 is arranged in the circumferential direction with the mounting through hole 43 as the axis; the two ends of the elastic buffer element 47 are fixed to the inner wall of the corrugated pipe 44 by bonding, can produce elastic deformation, absorb impact energy, provide elastic restoring force for the expansion joint 4, and make the expansion joint 4 able to recover to the normal state after impact.
[0038] Workflow: First, move the expansion joint 4 to the vicinity of the installation position of the female contact 3, align the mounting hole 43 of the expansion joint 4 with the corresponding mounting position of the female contact 3, slowly insert the expansion joint 4 into the female contact 3 until the end connecting ring 41 preliminarily contacts one end of the female contact 3, adjust the position of the expansion joint 4 so that one end of the male contact 1 can be accurately installed into the damping groove 42 on one side of the end connecting ring 41, and ensure that one end of the male contact 1 tightly fits the inside of the damping groove 42 to ensure good connection and buffering effect, then bring the end of the male contact 1 with the anti-reverse device 2 close to the female contact 3, rotate the male contact 1 to start screwing with the female contact 3, during the connection process, due to the presence of the anti-reverse device 2, it will limit the reverse direction of the male contact 1, ensure that the connection can only be in the direction of tightening, until the appropriate connection position is reached, at this time, a stable mechanical connection is established between the male contact 1 and the female contact 3, and the internal conductive structure also contacts each other;
[0039] When the temperature rises, the female contact 3 and the male contact 1 will have a tendency to expand, at this time, the expansion joint 4 inside the female contact 3 begins to play a role, the bellows 44 of the expansion joint 4 will stretch as the temperature rises, the corrugated groove 45 outside the bellows 44 allows the bellows 44 to stretch and contract in the axial direction, during the stretching process, the internal elastic buffer element 47 will also deform accordingly, the core elastic layer 473 first produces elastic deformation, absorbs part of the energy generated by expansion, at the same time, the damping buffer layer 472 interacts with the core elastic layer 473, dissipates part of the energy through the damping characteristics, prevents excessive elastic rebound, and the protective outer layer 471 protects the internal damping buffer layer 472 and the core elastic layer 473 from the influence of the external environment, ensures its normal work, when the temperature decreases, the female contact 3 and the male contact 1 will shrink, the bellows 44 of the expansion joint 4 will shrink, similarly, the elastic buffer element 47 will play a role in buffering and energy regulation in this process, the core elastic layer 473 provides elastic restoring force, the damping buffer layer 472 dissipates energy, so that the expansion joint 4 can smoothly adapt to the shrinkage process, avoid structural damage or loose connection caused by sudden shrinkage, when the antenna on the top of the communication base station tower vibrates due to strong wind, and then generates impact force on the connector, the expansion joint 4 will also respond, the impact force will be transmitted to the end connecting ring 41 and the bottom connecting ring 46 of the expansion joint 4, the bellows 44 between the end connecting ring 41 and the bottom connecting ring 46 will deform, when the bellows 44 deforms, the elastic buffer element 47 will produce elastic deformation in the circumferential direction. The core elastic layer 473 bears the main elastic deformation and provides restoring force, the damping buffer layer 472 dissipates energy through viscosity and damping characteristics during the deformation of the core elastic layer 473, reduces the impact on the entire connector structure, and the protective outer layer 471 prevents direct damage to the elastic buffer element 47 caused by external impact.
[0040] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A reverse-proof threaded radio frequency coaxial connector comprising a male contact (1), a reverse-proof device (2) and a female contact (3), characterized in that: The male contact piece (1) is fixedly connected with an anti-reverse device (2) at one end, a female contact piece (3) is spirally connected with the male contact piece (1) at one end close to the anti-reverse device (2), an expansion joint (4) is mounted inside the female contact piece (3), and a connecting wire (6) is fixedly connected with the male contact piece (1) and the female contact piece (3) at one end, and a protective sleeve (5) is mounted outside the connecting wire (6). The expansion joint (4) comprises an end connecting ring (41), a damping groove (42) is formed in one side of the end connecting ring (41), one end of the male contact piece (1) is mounted inside the damping groove (42), a corrugated pipe (44) is fixedly connected with the other side of the end connecting ring (41), an installation through hole (43) is formed in the center position of the end connecting ring (41), a corrugated groove (45) is formed outside the corrugated pipe (44), and a bottom connecting ring (46) is fixedly connected with the other end of the corrugated pipe (44), and an elastic buffer element (47) is fixedly connected with the inside of the corrugated pipe (44) in a bonding manner. The elastic buffer element (47) comprises a protective outer layer (471), a damping buffer layer (472) is fixedly connected with the inside of the protective outer layer (471), and a core elastic layer (473) is fixedly connected with the inside of the damping buffer layer (472).
2. A reverse rotation resistant threaded RF coaxial connector as described in claim 1, further characterized by: The expansion joint (4) is mounted at the middle position of the female contact piece (3), the expansion joint (4) is provided as a hollow cylinder, the two ends of the expansion joint (4) are tightly attached to one end of the female contact piece (3) and one end of the male contact piece (1), and the expansion joint (4) is arranged between the female contact piece (3) and the male contact piece (1).
3. A reverse rotation resistant threaded RF coaxial connector as described in claim 1, further characterized by: The installation through hole (43) is provided in a cylindrical shape, the installation through hole (43) passes through the center positions of the end connecting ring (41), the corrugated pipe (44) and the bottom connecting ring (46), and the installation through hole (43) is mounted at one end of the female contact piece (3).
4. A reverse rotation resistant threaded RF coaxial connector as described in claim 1, further characterized by: The damping groove (42) is arranged on one side of the end connecting ring (41), one end of the male contact piece (1) is mounted inside the damping groove (42), one end of the male contact piece (1) is tightly attached to the inside of the damping groove (42), the end connecting ring (41) and the bottom connecting ring (46) are arranged at the two ends of the corrugated pipe (44), and the end connecting ring (41) and the bottom connecting ring (46) are parallel to each other.
5. A reverse rotation resistant threaded RF coaxial connector as recited in claim 1, further comprising: The corrugated groove (45) is arranged outside the corrugated pipe (44), the corrugated groove (45) is in a periodic wave shape, the wave crests and wave troughs of the corrugated groove (45) are alternately arranged along the axial direction, and the corrugated groove (45) is in a U shape.
6. A reverse rotation resistant threaded RF coaxial connector as described in claim 1, further characterized by: A plurality of elastic buffer elements (47) are arranged, the elastic buffer elements (47) are uniformly and equidistantly distributed inside the corrugated pipe (44), the elastic buffer elements (47) are provided in a spiral spring shape, the elastic buffer elements (47) are arranged in a circumferential direction with the installation through hole (43) as an axis, and the two ends of the elastic buffer elements (47) are fixed to the inner wall of the corrugated pipe (44) in a bonding manner.
7. A reverse rotation resistant threaded RF coaxial connector as described in claim 1, further characterized by: The protective outer layer (471), the damping buffer layer (472) and the core elastic layer (473) are all spiral, the shape of the vertical section of the protective outer layer (471) and the damping buffer layer (472) is annular, the outer side of the damping buffer layer (472) is close to the surface of the core elastic layer (473) and the protective outer layer (471).