High-frequency low-loss radio frequency coaxial cable capable of preventing signal attenuation

Abstract

The invention discloses a high-frequency low-loss radio frequency coaxial cable capable of preventing signal attenuation, and relates to the technical field of coaxial cables. The device comprises a relay amplifier, cables are attached to the two sides of the relay amplifier, bearing blocks are fixedly connected to the two sides of the relay amplifier, the bearing blocks are attached to the cables, and limiting mechanisms are arranged in the bearing blocks. A handle is inserted into the inner wall of a reserved hole, the handle is rotated to drive a fixing rod, a second gear, a rotating plate, a threaded rod and a first gear to rotate, so that racks with meshed surfaces horizontally slide along the inner wall of a bearing block, loosening of the cable joint is effectively avoided, the effect of reinforcing a cable can be achieved, and meanwhile, the service life of the cable is prolonged. The stability of the cable is improved, the connection efficiency is improved, the cable connection position is prevented from being bent, the strength of the connection position is improved, an intermediate amplifier is additionally arranged at the connection position, and signal attenuation during long-distance transmission of the same-frequency cable is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of coaxial cables, and in particular to a high-frequency and low-loss radio frequency coaxial cable capable of preventing signal attenuation. Background Art

[0002] High-frequency, low-loss RF coaxial cable is a type of cable widely used to transmit high-frequency signals. It is designed to ensure that the signal is transmitted with as little energy loss as possible while minimizing electromagnetic interference. It is commonly used in communication systems, broadcasting, television, networks, RF test equipment and other fields.

[0003] In the document (publication number: CN108182997B), an optoelectronic hybrid radio frequency coaxial cable is disclosed. The cable maintains a circular cable shape, and both electrical signals and optical signals can be transmitted through it, saving system space, improving installation efficiency, and facilitating later maintenance. However, in actual use, the cable cannot achieve convenient connection between two groups of cables, which will cause the cable connection process to be complicated and easy to loosen, and cannot reasonably improve the cable connection efficiency. It reduces the convenience of cable laying and the stability of the connection. At the same time, it also causes signal attenuation when the coaxial cable is transmitted over long distances. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and provide a high-frequency, low-loss radio frequency coaxial cable that prevents signal attenuation.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A high-frequency, low-loss radio frequency coaxial cable for preventing signal attenuation, comprising a relay amplifier, cables are attached to both sides of the relay amplifier, receiving blocks are fixedly connected to both sides of the relay amplifier, the receiving blocks are attached to the cables, a limiting mechanism is arranged inside the receiving block, the limiting mechanism comprises a driven circular ring, a push plate, an inclined surface block, a limiting pad 1, a rack, a gear 1, a receiving rod and a connecting plate, the limiting pad 1 is attached to the surface of the cable, the limiting pad 1 is fixedly connected to the inclined surface block, the inclined surface block is slidably connected to the receiving block, the inclined surface block is fixedly connected to the push plate, the push plate is slidably connected to the receiving block, the push plate is fixedly connected to the driven circular ring, the driven circular ring is slidably connected to the receiving block, one end of the receiving rod is fixedly connected to the driven circular ring, the other end of the receiving rod is fixedly connected to the connecting plate, the connecting plate is slidably connected to the receiving block, the connecting plate is fixedly connected to the rack, the rack is slidably connected to the receiving block, and the rack is meshed with the gear 1;

[0007] A fixing mechanism is arranged inside the receiving block, and the fixing mechanism includes a limit pad 2, a threaded rod, a slider 1, a connecting rod and a rotating plate. The limit pad 2 fits the surface of the cable, the limit pad 2 is fixedly connected to the connecting rod, the connecting rod is fixedly connected to the slider 1, the slider 1 is threadedly connected to the threaded rod, the threaded rod is fixedly connected to the gear 1, and the rotating plate is fixedly connected to the threaded rod.

[0008] Furthermore, both sides of the inclined plane block are fixedly connected with a receiving plate, the lower surface of the receiving plate is fixedly connected with a spring 1, and the spring 1 is fixedly connected to the receiving block.

[0009] Furthermore, a reserved groove is provided inside the receiving block, the inner wall of the reserved groove is in contact with the cable, a joint is fixedly installed on one side of the relay amplifier, and the joint is slidably connected to the connecting rod.

[0010] Furthermore, a fixing rod is fixedly connected to the upper surface of the rotating plate, and a reserved hole is opened inside the fixing rod.

[0011] Furthermore, a second gear is fixedly connected to the surface of the fixed rod, a latch is meshed on the surface of the second gear, a second slider is fixedly connected to the outer side of the latch, the second slider is slidably connected to the receiving block, and the second slider is fitted to the rotating plate.

[0012] Furthermore, a push block is fixedly connected to the surface of the sliding block 2, and the push block is fitted with the receiving block.

[0013] Furthermore, one end of the sliding block 2 is fixedly connected to a spring 2, and the spring 2 is fixedly connected to the receiving block.

[0014] Furthermore, a sealing gasket is clamped on the upper surface of the receiving block, and the sealing gasket is in contact with the fixing rod.

[0015] Furthermore, a central conductor is arranged inside the cable, the central conductor is in contact with the second limiting pad, and an insulating layer is arranged outside the central conductor.

[0016] Furthermore, a multi-layer composite shielding functional layer is arranged on the outer side of the insulating layer, and an insulating outer sheath is arranged on the outer side of the multi-layer composite shielding functional layer.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention inserts a handle into the inner wall of the reserved hole, and rotates the handle to drive the fixed rod, gear 2, rotating plate, threaded rod and gear 1 to rotate, so that the surface-engaged rack slides horizontally along the inner wall of the receiving block, so that the connecting plate and the receiving rod follow the rack to move horizontally in the same direction, and the receiving rod pushes the driven ring and the push plate to move horizontally along the inner wall of the receiving block, so that the inclined block and the receiving plate move vertically downward, so that the spring 1 is compressed, so that the limit pad 1 is tightly fitted with the outer wall of the cable, thereby limiting the cable. The setting of this structure effectively avoids loosening of the cable connection, and can achieve the effect of strengthening the cable. At the same time, the stability of the cable is improved, the connection efficiency is improved, the bending of the cable connection is avoided, the strength of the connection is improved, and an additional intermediate amplifier is added at the connection to avoid signal attenuation of the same frequency cable during long-distance transmission.

[0019] The second gear is engaged with the second gear and the second gear is engaged with the first gear, and the second gear is engaged with the second gear, thereby preventing the second gear from being engaged with the first gear and the second gear from being engaged with the first gear.

[0020] 3. The present invention arranges a multi-layer composite shielding functional layer on the outside of the insulating layer, wherein the inner layer is composed of aluminum foil, which provides the first shielding against electromagnetic interference, prevents external electromagnetic waves from entering the interior of the cable, and also reduces signal leakage in the cable; the middle layer is composed of copper wire, which further enhances the shielding effect of electromagnetic interference, especially has a strong shielding ability in low-frequency signal interference; at the same time, the layer also provides additional mechanical protection, enhances the tensile strength and torsion resistance of the cable; the outer layer is composed of conductive rubber, which provides additional shielding and protection for the cable, and reduces static electricity accumulation through the conductivity of the conductive rubber; the arrangement of the multi-layer composite shielding functional layer can improve the quality and stability of signal transmission while effectively shielding electromagnetic interference, and enhances the tensile, torsion and compression resistance of the cable, ensures that it is not easily damaged in applications requiring bending or stretching, and improves the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 The present invention Figure 2 Left view of the local structure diagram;

[0023] Figure 3 The present invention Figure 1 Rear view of the internal structure;

[0024] Figure 4 The present invention Figure 3 A schematic diagram of the partial structure viewed from above;

[0025] Figure 5 The present invention Figure 4 A is an enlarged structural diagram;

[0026] Figure 6 The present invention Figure 4 Look directly at the schematic diagram of the local structure;

[0027] Figure 7 The present invention Figure 6 A schematic diagram of a partial structure viewed from above;

[0028] Figure 8 The present invention Figure 1 Schematic diagram of the cross-sectional structure of the left view.

[0029] Figure numerals: 1. relay amplifier; 11. receiving block; 12. cable; 13. reserved groove; 14. joint; 15. sealing gasket; 2. center conductor; 21. insulating layer; 22. insulating outer sheath; 23. multi-layer composite shielding functional layer; 3. limiting mechanism; 31. driven ring; 32. push plate; 33. inclined block; 34. receiving plate; 35. spring one; 36. limiting pad one; 37. rack; 38. gear one; 39. receiving rod; 310. connecting plate; 4. fixing mechanism; 41. limiting pad two; 42. threaded rod; 43. slider one; 44. connecting rod; 45. rotating plate; 5. gear two; 51. fixing rod; 52. reserved hole; 53. latching tooth; 54. push block; 55. spring two; 56. slider two. DETAILED DESCRIPTION

[0030] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] Embodiment 1, as Figure 1-Figure 8As shown, a high-frequency, low-loss radio frequency coaxial cable for preventing signal attenuation includes a relay amplifier 1, both sides of the relay amplifier 1 are bonded with cables 12, both sides of the relay amplifier 1 are fixedly connected with receiving blocks 11, the receiving blocks 11 are bonded with the cables 12, and a limiting mechanism 3 is arranged inside the receiving block 11, the limiting mechanism 3 includes a driven ring 31, a push plate 32, a ramp block 33, a limiting pad 36, a rack 37, a gear 38, a receiving rod 39 and a connecting plate 310, the limiting pad 36 is bonded with the surface of the cable 12, and the limiting pad 36 is bonded with the ramp block 3 3 is fixedly connected, the inclined surface block 33 is slidably connected to the receiving block 11, the inclined surface block 33 is fixedly connected to the push plate 32, the push plate 32 is slidably connected to the receiving block 11, the push plate 32 is fixedly connected to the driven ring 31, the driven ring 31 is slidably connected to the receiving block 11, one end of the receiving rod 39 is fixedly connected to the driven ring 31, the other end of the receiving rod 39 is fixedly connected to the connecting plate 310, the connecting plate 310 is slidably connected to the receiving block 11, the connecting plate 310 is fixedly connected to the rack 37, the rack 37 is slidably connected to the receiving block 11, and the rack 37 is meshed with the gear 1 38;

[0032] A fixing mechanism 4 is provided inside the receiving block 11, and the fixing mechanism 4 includes a limit pad 2 41, a threaded rod 42, a slider 1 43, a connecting rod 44 and a rotating plate 45. The limit pad 2 41 fits the surface of the cable 12, the limit pad 2 41 is fixedly connected to the connecting rod 44, the connecting rod 44 is fixedly connected to the slider 1 43, the slider 1 43 is threadedly connected to the threaded rod 42, the threaded rod 42 is fixedly connected to the gear 1 38, and the rotating plate 45 is fixedly connected to the threaded rod 42.

[0033] When reinforcing the cable 12, the handle is inserted into the inner wall of the reserved hole 52, and the fixed rod 51, the gear 2 5, the rotating plate 45, the threaded rod 42 and the gear 1 38 are rotated by rotating the handle, so that the rack 37 meshing on the surface of the gear 1 38 slides horizontally along the inner wall of the receiving block 11, so that the connecting plate 310 and the receiving rod 39 follow the rack 37 to move horizontally in the same direction, and the driven ring 31 and the push plate 32 are pushed by the receiving rod 39 to move horizontally along the inner wall of the receiving block 11. The movement causes the inclined block 33 and the receiving plate 34 to move vertically downward, compressing the spring 1 35 so that the limiting pad 1 36 fits tightly against the outer wall of the cable 12, thereby limiting the cable 12. The threaded rod 42 rotates so that the slider 1 43 moves vertically downward along the inner wall of the receiving block 11, so that the connecting rod 44 and the limiting pad 2 41 move vertically downward following the slider 1 43, so that the limiting pad 2 41 fits tightly against the center conductor 2, thereby reinforcing the center conductor 2.

[0034] Embodiment 2, as Figure 5As shown, on the basis of the above embodiment, it also includes that both sides of the inclined block 33 are fixedly connected with a receiving plate 34, the lower surface of the receiving plate 34 is fixedly connected with a spring 35, and the spring 35 is fixedly connected to the receiving block 11. When the push plate 32 returns to its original position, the elastic force of the spring 35 can rebound the inclined block 33 to the initial height, thereby facilitating the disassembly and assembly of the co-frequency cable 12.

[0035] Embodiment three, as Figure 1 , Figure 2 As shown, on the basis of the above embodiment, it also includes that a reserved groove 13 is opened inside the receiving block 11, the inner wall of the reserved groove 13 is in contact with the cable 12, and a connector 14 is fixedly installed on one side of the relay amplifier 1, and the connector 14 is slidably connected to the connecting rod 44. The same-frequency cable 12 can be initially limited by the connector 14 and the reserved groove 13, which simplifies the steps of connecting the cable 12 and improves the connection efficiency of the cable 12.

[0036] Embodiment 4, as Figure 7 As shown, on the basis of the above embodiment, it also includes that the upper surface of the rotating plate 45 is fixedly connected to a fixing rod 51, and a reserved hole 52 is opened inside the fixing rod 51. The reserved hole 52 is convenient for installing the handle to the upper surface of the fixing rod 51, and the handle can be removed after the cable 12 is installed, thereby avoiding accidental touch by people and improving the safety of the connection.

[0037] Embodiment 5, as Figure 7 As shown, on the basis of the above embodiment, it also includes that the surface of the fixed rod 51 is fixedly connected to the gear 2 5, the surface of the gear 2 5 is meshed with a latch 53, the outer side of the latch 53 is fixedly connected to the slider 2 56, the slider 2 56 is slidably connected to the receiving block 11, the slider 2 56 is fitted with the rotating plate 45, the surface of the slider 2 56 is fixedly connected to the push block 54, the push block 54 is fitted with the receiving block 11, one end of the slider 2 56 is fixedly connected to the spring 2 55, the spring 2 55 is fixedly connected to the receiving block 11 Before connecting the cable 12, push the push block 54, and the push block 54 drives the slider 2 56 to move horizontally, so that the latch tooth 53 is away from the surface of the gear 2 5, so that the latch tooth 53 and the gear 2 5 are no longer meshed. At this time, the spring 2 55 is compressed. After the connection is completed, release the push block 54, and the slider 2 56 is restored to its original position by the elastic force of the spring 2 55, so that the latch tooth 53 is meshed with the gear 2 5 again, and the gear 2 5 is limited by the latch tooth 53, thereby preventing the limit pad 2 41 from returning to its original position.

[0038] Embodiment six, as Figure 1 , Figure 6As shown, based on the above embodiment, a sealing gasket 15 is clamped on the upper surface of the receiving block 11, and the sealing gasket 15 is in contact with the fixing rod 51. The sealing gasket 15 can seal the fixing rod 51, thereby improving the sealing performance of the connection.

[0039] Embodiment seven, as Figure 8 As shown, on the basis of the above embodiment, it also includes that a central conductor 2 is arranged inside the cable 12, the central conductor 2 is fitted with a limiting pad 41, an insulating layer 21 is arranged on the outside of the central conductor 2, a multi-layer composite shielding functional layer 23 is arranged on the outside of the insulating layer 21, an insulating outer sheath 22 is arranged on the outside of the multi-layer composite shielding functional layer 23, the central conductor 2 is composed of a copper rod, which is responsible for transmitting signals, and is located at the center of the cable 12. The insulating layer 21 is composed of foamed polyethylene, which plays a role of electrical isolation to prevent signal leakage and short circuit. It has a lower dielectric constant and lower dielectric loss, which helps to improve the transmission efficiency of the cable 12 signal, the multi-layer composite shielding functional layer 23 is composed of copper-plated aluminum, and the inner layer of the multi-layer composite shielding functional layer 23 is composed of aluminum foil, which provides a first protection against electromagnetic interference. The multi-layer composite shielding functional layer 23 has a copper wire middle layer, which further enhances the shielding effect of electromagnetic interference, especially has a strong shielding ability in low-frequency signal interference. At the same time, this layer also provides additional mechanical protection, enhances the tensile strength and torsion resistance of the cable 12, and the outer layer of the multi-layer composite shielding functional layer 23 is composed of conductive rubber, which provides additional shielding and protection for the cable 12, and reduces static electricity accumulation through the conductivity of the conductive rubber. The insulating outer sheath 22 is composed of polyvinyl chloride, which wraps the entire cable 12, protects the internal structure of the cable 12 from physical damage, provides additional electrical insulation, and prevents the cable 12 from being damaged by the external environment.

[0040] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-frequency, low-loss radio frequency coaxial cable that prevents signal attenuation, comprising a relay amplifier (1), characterized in that: The two sides of the relay amplifier (1) are both fitted with cables (12), and the two sides of the relay amplifier (1) are both fixedly connected with receiving blocks (11), the receiving blocks (11) are fitted with the cables (12), and a limiting mechanism (3) is arranged inside the receiving block (11), and the limiting mechanism (3) includes a driven ring (31), a push plate (32), an inclined surface block (33), a limiting pad (36), a rack (37), a gear (38), a receiving rod (39) and a connecting plate (310), the limiting pad (36) is fitted with the surface of the cable (12), the limiting pad (36) is fixedly connected to the inclined surface block (33), and the inclined surface block (33) is connected to the receiving block (1 1) Sliding connection, the inclined surface block (33) is fixedly connected to the push plate (32), the push plate (32) is slidably connected to the receiving block (11), the push plate (32) is fixedly connected to the driven ring (31), the driven ring (31) is slidably connected to the receiving block (11), one end of the receiving rod (39) is fixedly connected to the driven ring (31), the other end of the receiving rod (39) is fixedly connected to the connecting plate (310), the connecting plate (310) is slidably connected to the receiving block (11), the connecting plate (310) is fixedly connected to the rack (37), the rack (37) is slidably connected to the receiving block (11), and the rack (37) is meshed with gear one (38); A fixing mechanism (4) is arranged inside the receiving block (11), and the fixing mechanism (4) comprises a second limiting pad (41), a threaded rod (42), a slider (43), a connecting rod (44) and a rotating plate (45); the second limiting pad (41) is in contact with the surface of the cable (12); the second limiting pad (41) is fixedly connected to the connecting rod (44); the connecting rod (44) is fixedly connected to the slider (43); the slider (43) is threadedly connected to the threaded rod (42); the threaded rod (42) is fixedly connected to the gear (38); and the rotating plate (45) is fixedly connected to the threaded rod (42).

2. The high-frequency, low-loss radio frequency coaxial cable with anti-signal attenuation according to claim 1, characterized in that: Both sides of the inclined surface block (33) are fixedly connected with a receiving plate (34), the lower surface of the receiving plate (34) is fixedly connected with a spring 1 (35), and the spring 1 (35) is fixedly connected to the receiving block (11).

3. The high-frequency, low-loss radio frequency coaxial cable with anti-signal attenuation according to claim 1, characterized in that: A reserved groove (13) is provided inside the receiving block (11), and the inner wall of the reserved groove (13) is in contact with the cable (12). A joint (14) is fixedly installed on one side of the relay amplifier (1), and the joint (14) is slidably connected to the connecting rod (44).

4. The high-frequency, low-loss radio frequency coaxial cable with anti-signal attenuation according to claim 1, characterized in that: A fixing rod (51) is fixedly connected to the upper surface of the rotating plate (45), and a reserved hole (52) is provided inside the fixing rod (51).

5. The high-frequency, low-loss radio frequency coaxial cable with anti-signal attenuation according to claim 4, characterized in that: The surface of the fixed rod (51) is fixedly connected to a second gear (5), the surface of the second gear (5) is meshed with a latching tooth (53), the outer side of the latching tooth (53) is fixedly connected to a second slider (56), the second slider (56) is slidably connected to the receiving block (11), and the second slider (56) is in contact with the rotating plate (45).

6. The high-frequency, low-loss radio frequency coaxial cable with anti-signal attenuation according to claim 5, characterized in that: A push block (54) is fixedly connected to the surface of the second sliding block (56), and the push block (54) is in contact with the receiving block (11).

7. The high-frequency, low-loss radio frequency coaxial cable with anti-signal attenuation according to claim 5, characterized in that: One end of the second slide block (56) is fixedly connected to a second spring (55), and the second spring (55) is fixedly connected to the receiving block (11).

8. The high-frequency, low-loss radio frequency coaxial cable with anti-signal attenuation according to claim 1, characterized in that: A sealing gasket (15) is clamped on the upper surface of the receiving block (11), and the sealing gasket (15) is in contact with the fixing rod (51).

9. The high-frequency, low-loss radio frequency coaxial cable with anti-signal attenuation according to claim 1, characterized in that: A central conductor (2) is arranged inside the cable (12), the central conductor (2) is in contact with a second limiting pad (41), and an insulating layer (21) is arranged outside the central conductor (2).

10. The high-frequency, low-loss radio frequency coaxial cable with anti-signal attenuation according to claim 9, characterized in that: A multi-layer composite shielding functional layer (23) is arranged on the outer side of the insulating layer (21), and an insulating outer sheath (22) is arranged on the outer side of the multi-layer composite shielding functional layer (23).

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