A low attenuation radar coaxial radio frequency cable

Abstract

The application discloses a low-attenuation radar coaxial radio frequency cable and relates to the technical field of cables.The cable comprises, from the inside to the outside, an insulation layer, an armored layer and a cable core, and the end of the cable is provided with a connecting part, which comprises a connecting sleeve and a deformation sleeve; a clamping unit is arranged on the connecting sleeve and is used for driving the deformation sleeve to elastically contract and deform, so that the hole wall of the mounting hole clamps the armored layer. The armored layer is arranged, so that the cable core of the cable is protected against pressure. In addition, the armored layer is inserted into the mounting hole, the cable core is inserted into the cable core perforation, the deformation sleeve is driven by the clamping unit to elastically contract and deform, and then the hole wall of the mounting hole clamps the armored layer, so that the cable can be quickly docked and mounted. When the cable is subjected to a pulling force, the cable core is not easily affected by stress through the frictional resistance between the surface of the armored layer and the hole wall of the mounting hole, so that the service life of the cable is not affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric power, in particular to a low-attenuation radar coaxial radio frequency cable. BACKGROUND

[0002] The radio frequency coaxial cable refers to a cable with two concentric conductors, and the conductors and the shielding layer share the same axis. The radio frequency coaxial cable is composed of a copper wire conductor isolated by a physical foamed polyethylene insulating material. Outside the inner insulating material is another annular conductor, i.e., an outer conductor. The outer conductor (shielding layer) is formed by copper strips, welding, and knurling; or is formed by an aluminum pipe structure; or is formed by a braided structure. Then the entire cable is covered by a polyvinyl chloride (PVC) sheath.

[0003] The existing coaxial radio frequency cable is generally connected by a connector when being connected, so that the two coaxial radio frequency cables can be conductive to each other. For example, patent CN113611998A discloses a bidirectional coaxial radio frequency cable convenient to assemble, which belongs to the technical field of electric power. The coaxial radio frequency cable comprises a cable connecting body, which is composed of a radio frequency cable body, a sleeve mechanism, and an embedded component. The sleeve mechanism is fixedly connected with the radio frequency cable body, and the embedded component is fixedly connected with the radio frequency cable body. The sleeve mechanism is composed of a sleeve component, a push joint component, and an elastic positioning component. The push joint component is threadedly connected with the sleeve component. The elastic positioning component is located inside the sleeve component and is slidably connected with the sleeve component. The elastic positioning component is slidably connected with the push joint component. The radio frequency cable body is provided with the sleeve mechanism and the embedded component at both ends, so that a complete cable connecting body is formed. The cable connecting body can be connected with multiple cables at the same time, which meets the needs of cable installation at different distances. The cable connecting body can be bidirectionally connected, which meets the needs of diversified cable installation.

[0004] Although the above-mentioned coaxial radio frequency cable can meet the requirements of connection, when the cable is subjected to a large pulling force, stress is easily generated. A single connection mode is difficult to meet the requirements of a large pulling force. For example, the cylinder type structure connected by a connection screw has poor flexibility, and the connection is not easy to operate, which may cause the cable connection to fall off, thereby affecting the service life.

[0005] Therefore, the present application provides a low-attenuation radar coaxial radio frequency cable. SUMMARY

[0006] The present application aims to provide a low-attenuation radar coaxial radio frequency cable to solve the problems in the background art.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0008] A low-attenuation radar coaxial radio frequency cable, the cable comprising, from inside to outside, an insulating layer, an armored layer and a cable core, an end of the cable being provided with a connecting portion, the connecting portion comprising:

[0009] a connecting sleeve coaxially provided with a mounting hole for mounting the armored layer, the connecting sleeve further coaxially provided with a cable core through hole, the cable core through hole being in communication with the two mounting holes on the connecting sleeve, the cable core being inserted into the cable core through hole;

[0010] a deforming sleeve coaxially fixed to an end of the connecting sleeve, a central hole of the deforming sleeve being in communication with the mounting hole, a periphery of the deforming sleeve being provided with a plurality of deforming slots, the deforming slots being in communication with the central hole of the deforming sleeve;

[0011] a clamping unit provided on the connecting sleeve and used for driving the deforming sleeve to elastically contract and deform, so that the hole wall of the mounting hole clamps the armored layer.

[0012] Further, the clamping unit comprises a driving sleeve sleeved on the connecting sleeve, the driving sleeve being freely slidable on the connecting sleeve, an outer diameter of the deforming sleeve being sequentially increased in a direction away from the connecting sleeve, the driving sleeve coaxially provided with a taper hole for clamping the deforming sleeve, the taper hole being used in cooperation with the driving sleeve, the connecting sleeve coaxially rotatably connected with two rotating sleeves, one end face of the rotating sleeve towards the driving sleeve being fixedly connected with a first protrusion, an end face of the driving sleeve being fixedly connected with a second protrusion used in cooperation with the first protrusion, the connecting sleeve being provided with a rotating assembly used for driving the two rotating sleeves to synchronously rotate.

[0013] Further, the connecting sleeve coaxially provided with an annular mounting groove, the rotating sleeve coaxially fixedly connected with an annular clamping block, the annular clamping block being clamped in the annular mounting groove and freely rotatable.

[0014] Further, the rotating assembly comprises a rotating rod perpendicularly rotatably connected with a periphery of the connecting sleeve, the rotating rod fixedly sleeved with a rotating gear, an end face of the rotating sleeve coaxially fixedly connected with an end face gear, the end face gear being in mesh with the rotating gear.

[0015] Further, the connecting sleeve periphery is fixedly connected with a fixed ring, the rotating rod penetrates through the fixed ring and is freely rotatable, the rotating rod sleeved with a floating ring, the floating ring freely slidable on the rotating rod and keyed connected with a periphery of the rotating rod, one end face of the floating ring towards the fixed ring being provided with a first ratchet, an end face of the fixed ring being provided with a second ratchet, the first ratchet used in cooperation with the second ratchet.

[0016] Further, a spring is sleeved on the rotating rod, and two ends of the spring in the elastic force direction are elastically abutted against the rotating gear and the floating ring respectively.

[0017] Further, outer surfaces of the first ratchet and the second ratchet are chrome-plated.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] The present application can protect the cable core from compression by arranging the armor layer, and the armor layer is inserted into the mounting hole, the cable core is inserted into the cable core perforation, and the elastic shrinkage deformation of the deformation sleeve is driven by the clamping unit, so that the hole wall of the mounting hole clamps the armor layer, the cable can be quickly docked and installed, and when the cable is subjected to a pulling force, the cable core is not easily affected by stress through the frictional resistance between the surface of the armor layer and the hole wall of the mounting hole, so that the service life of the cable is not affected.

[0020] The rotating rod is rotated, the rotating gear is engaged with the end face gear on the two rotating sleeves, the rotating sleeve is driven to rotate, the first protrusion and the second protrusion can be contacted, the driving sleeve is driven to move towards the axial outside of the connecting sleeve, the inner wall of the taper hole and the taper edge of the deformation sleeve are relatively slid, the deformation sleeve is elastically shrunk and deformed, the mounting hole of the deformation sleeve clamps the armor layer of the cable, and the operation is simple.

[0021] The fixed ring, the first ratchet, the floating ring and the second ratchet are arranged, the fixed ring and the floating ring can only be relatively rotated in one direction through the engagement of the first ratchet and the second ratchet, the rotating rod is not easily self-rotated after being rotated, the driving sleeve is not easily self-slid, and the clamping force of the deformation sleeve on the armor layer is affected. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structure schematic view of the low-attenuation radar coaxial radio frequency cable in the present application;

[0023] Figure 2 It is a structure schematic view of the low-attenuation radar coaxial radio frequency cable in the present application; Figure 1

[0024] Figure 3 It is a structure schematic view of the low-attenuation radar coaxial radio frequency cable in the present application; Figure 1

[0025] Figure 4 It is a structure schematic view of the low-attenuation radar coaxial radio frequency cable in the present application; Figure 3

[0026] Figure 5 It is an explosion decomposition schematic view of the structure of the low-attenuation radar coaxial radio frequency cable in the present application; Figure 3 It is an explosion decomposition schematic view of the structure of the low-attenuation radar coaxial radio frequency cable in the present application;​​​

[0027] Figure 6 for Figure 3 a front view angle structure schematic diagram;

[0028] Figure 7 for Figure 6 the enlarged schematic diagram of the local structure at A in figure.

[0029] In the figure, the reference signs are explained as follows: 1, insulation layer; 2, driving sleeve; 3, rotating sleeve; 4, connecting sleeve; 5, end face gear; 6, rotating rod; 7, armored layer; 8, cable core; 9, second protrusion; 10, rotating gear; 11, deformation seam; 12, deformation sleeve; 13, first protrusion; 14, floating ring; 15, fixed ring; 16, spring; 17, second ratchet; 18, taper hole; 19, mounting hole; 20, first ratchet; 21, annular mounting groove. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] Please refer to Figures 1-7 The present application provides a technical solution: a low-attenuation radar coaxial RF cable, the cable comprises from inside to outside an insulation layer 1, an armored layer 7 and a cable core 8, the end of the cable is provided with a connecting part, the connecting part comprises a connecting sleeve 4, the connecting sleeve 4 is coaxially provided with a mounting hole 19 for mounting the armored layer 7, the connecting sleeve 4 is further provided with a cable core through hole, the cable core through hole is in communication with the two mounting holes 19 on the connecting sleeve 4, the cable core 8 is inserted into the cable core through hole, the armored layers 7 of two cables to be connected are respectively inserted into the mounting holes 19 at both ends of the connecting sleeve 4, after being inserted into position, the cable cores 8 of the two cables are inserted into the cable core through hole, the cable cores 8 of the two cables abut against each other, so that the cable can be conducted.

[0032] The end of the connecting sleeve 4 is integrally formed with a deformation sleeve 12, the outer diameter of the deformation sleeve 12 gradually increases away from the connecting sleeve 4, the central hole of the deformation sleeve 12 penetrates the mounting hole 19, a plurality of deformation seams 11 are arranged on the peripheral edge of the deformation sleeve 12 and penetrate the central hole of the deformation sleeve 12, the driving sleeve 2 is sleeved on the connecting sleeve 4 and freely slides on the connecting sleeve 4, the outer diameter of the deformation sleeve 12 gradually increases away from the connecting sleeve 4, a tapered hole 18 for clamping the deformation sleeve 12 is coaxially arranged on the driving sleeve 2, the tapered hole 18 is used in cooperation with the driving sleeve 2, two rotating sleeves 3 are coaxially and rotatably connected on the connecting sleeve 4, specifically, an annular mounting groove 21 is coaxially arranged on the connecting sleeve 4, an annular clamping block is fixedly connected on the rotating sleeve 3, the annular clamping block is clamped in the annular mounting groove 21 and freely rotates, so that the rotating sleeve 3 is coaxially and rotatably connected on the connecting sleeve 4, a first protrusion 13 is fixedly connected on the end face of the rotating sleeve 3 facing the driving sleeve 2, and a second protrusion 9 is fixedly connected on the end face of the driving sleeve 2 and used in cooperation with the first protrusion 13;

[0033] Through the rotation of the rotating sleeve 3, the first protrusion 13 on the rotating sleeve 3 is in contact with the second protrusion 9 on the end face of the driving sleeve 2, then the first protrusion 13 slides to the surface of the second protrusion 9, so that the driving sleeve 2 can move to the outside of the axial direction of the connecting sleeve 4, and then the inner wall of the tapered hole 18 of the driving sleeve 2 and the tapered edge of the deformation sleeve 12 slide relative to each other, so that the inner wall of the tapered hole 18 of the driving sleeve 2 exerts an extrusion force on the deformation sleeve 12, and then the deformation sleeve 12 elastically shrinks, and the hole wall of the mounting hole 19 clamps the armor layer 7;

[0034] The rotating rod 6 is perpendicularly and rotatably connected on the peripheral edge of the connecting sleeve 4, the rotating gear 10 is fixedly sleeved on the rotating rod 6, the end face gear 5 is coaxially and fixedly connected on the end face of the rotating sleeve 3, the end face gear 5 is engaged with the rotating gear 10, the fixed ring 15 is fixedly connected on the peripheral edge of the connecting sleeve 4, the rotating rod 6 penetrates the fixed ring 15 and freely rotates, the floating ring 14 is sleeved on the rotating rod 6 and freely slides on the rotating rod 6 and is keyed connected with the peripheral edge of the rotating rod 6, the first ratchet 20 is arranged on the end face of the floating ring 14 facing the fixed ring 15, the second ratchet 17 is arranged on the end face of the fixed ring 15, the first ratchet 20 is used in cooperation with the second ratchet 17, the spring 16 is sleeved on the rotating rod 6, the two ends of the spring 16 in the elastic force direction are respectively and correspondingly elastically abut against the rotating gear 10 and the floating ring 14, the outer surfaces of the first ratchet 20 and the second ratchet 17 are chrome plated;

[0035] Rotate the rotating rod 6, when the rotating rod 6 rotates, drive the rotating gear 10 to rotate, the rotating gear 10 rotates, drive the end face gear 5 of the two rotating sleeves 3 to engage, so that the rotating sleeve 3 rotates, when the rotating sleeve 3 rotates, drive the first protrusion 13 to rotate, until the first protrusion 13 extrudes the second protrusion 9, and then drive the drive sleeve 2 to move to the axial outside of the connecting sleeve 4, at the same time, the first ratchet 20 and the second ratchet 17 rotate relatively, specifically, the inclined surface of the first ratchet 20 slides on the inclined surface of the second ratchet 17, so that the rotating rod 6 can rotate, at the same time, the straight surface of the first ratchet 20 abuts against the straight surface of the second ratchet 17, thereby avoiding the rotating rod 6 from rotating reversely, so that the drive sleeve 2 cannot slide to the axial inside of the connecting sleeve 4 by itself.

[0036] The working principle of the application is as follows: the armored layers 7 of the two cables to be connected and installed are respectively inserted into the installation holes 19 at both ends of the connecting sleeve 4, after being inserted in place, the cable cores 8 of the two cables are inserted into the cable core perforations, the cable cores 8 of the two cables abut against each other, thereby enabling the cables to be conductive, rotate the rotating rod 6, when the rotating rod 6 rotates, drive the rotating gear 10 to rotate, the rotating gear 10 rotates, drive the end face gear 5 of the two rotating sleeves 3 to engage, so that the rotating sleeve 3 rotates, when the rotating sleeve 3 rotates, drive the first protrusion 13 to rotate, until the first protrusion 13 extrudes the second protrusion 9, and then drive the drive sleeve 2 to move to the axial outside of the connecting sleeve 4, and then make the inner wall of the taper hole 18 of the drive sleeve 2 slide relatively with the tapered edge of the deformation sleeve 12, so that the inner wall of the taper hole 18 of the drive sleeve 2 extrudes the deformation sleeve 12, thereby making the deformation sleeve 12 elastically contract, and making the hole wall of the installation hole 19 clamp the armored layer 7, the inclined surface of the first ratchet 20 slides on the inclined surface of the second ratchet 17, so that the rotating rod 6 can rotate, at the same time, the straight surface of the first ratchet 20 abuts against the straight surface of the second ratchet 17, thereby avoiding the rotating rod 6 from rotating reversely, so that the drive sleeve 2 cannot slide to the axial inside of the connecting sleeve 4 by itself.

[0037] It is to be understood that the terminology used herein such as first and second, and the like, is only used to distinguish one entity or action from another entity or action, and does not necessarily require or imply any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. While embodiments of the present application have been shown and described with reference to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. The scope of the application is thus defined by the appended claims and their equivalents.

Claims

1. A low-attenuation radar coaxial radio frequency cable, characterized in that, The cable comprises, from the inside out, an insulation layer (1), an armor layer (7), and a cable core (8). The cable ends are provided with a connecting portion, which includes: The connecting sleeve (4) has a coaxial mounting hole (19) for installing the armor layer (7). The connecting sleeve (4) also has a cable core through hole, which is connected to the two mounting holes (19) on the connecting sleeve (4). The cable core (8) is inserted into the cable core through hole. A deformable sleeve (12) is coaxially fixed to the end of the connecting sleeve (4), and the central hole of the deformable sleeve (12) is connected to the mounting hole (19). A plurality of deformation slots (11) are opened around the periphery of the deformable sleeve (12), and the deformation slots (11) are connected to the central hole of the deformable sleeve (12). A clamping unit is provided on the connecting sleeve (4) and is used to drive the deformable sleeve (12) to elastically contract and deform so that the hole wall of the mounting hole (19) clamps the armor layer (7). The clamping unit includes a drive sleeve (2) fitted onto the connecting sleeve (4), the drive sleeve (2) sliding freely on the connecting sleeve (4), the outer diameter of the deformable sleeve (12) increasing sequentially in the direction away from the connecting sleeve (4), the drive sleeve (2) having a conical hole (18) coaxially provided for the deformable sleeve (12) to engage, the conical hole (18) cooperating with the drive sleeve (2), the connecting sleeve (4) having two rotating sleeves (3) coaxially rotatably connected, the rotating sleeve (3) having a first protrusion (13) fixedly connected to one end face of the drive sleeve (2), the drive sleeve (2) having a second protrusion (9) fixedly connected to the end face of the drive sleeve (2) to cooperate with the first protrusion (13), the connecting sleeve (4) having a rotating component for driving the two rotating sleeves (3) to rotate synchronously; The rotating assembly includes a rotating rod (6) that is rotatably connected to the periphery of the connecting sleeve (4). A rotating gear (10) is fixedly sleeved on the rotating rod (6). An end face gear (5) is coaxially fixed to the end face of the rotating sleeve (3). The end face gear (5) meshes with the rotating gear (10).

2. The low-attenuation radar coaxial radio frequency cable according to claim 1, characterized in that, The connecting sleeve (4) is coaxially provided with an annular mounting groove (21), and the rotating sleeve (3) is coaxially fixed with an annular locking block. The annular locking block is engaged in the annular mounting groove (21) and can rotate freely.

3. The low-attenuation radar coaxial radio frequency cable according to claim 1, characterized in that, The connecting sleeve (4) is fixedly connected to a fixed ring (15) around its periphery. The rotating rod (6) passes through the fixed ring (15) and rotates freely. A floating ring (14) is sleeved on the rotating rod (6). The floating ring (14) slides freely on the rotating rod (6) and is keyed to the periphery of the rotating rod (6). The floating ring (14) has a first ratchet (20) on one end face facing the fixed ring (15), and the fixed ring (15) has a second ratchet (17) on the end face. The first ratchet (20) and the second ratchet (17) are used in conjunction.

4. The low-attenuation radar coaxial radio frequency cable according to claim 3, characterized in that, A spring (16) is wound around the rotating rod (6), and the two ends of the spring (16) elastically abut against the rotating gear (10) and the floating ring (14) respectively.

5. The low-attenuation radar coaxial radio frequency cable according to claim 3, characterized in that, The outer surfaces of the first ratchet (20) and the second ratchet (17) are chrome plated.

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