阅读说明：本技术 一种插接型同轴射频连接器 (Plug-in type coaxial radio frequency connector ) 是由 常启 于 2021-08-02 设计创作，主要内容包括：本发明公开了一种插接型同轴射频连接器,涉及射频连接器技术领域。本发明包括屏蔽连接结构；屏蔽连接结构内部对称设置有两电缆定位机构,屏蔽连接结构包括有屏蔽连接筒,屏蔽连接筒内壁固定安装有柱形屏蔽环；电缆定位机构包括有密封屏蔽组件、定位安装组件和抗扭旋转组件,密封屏蔽组件与定位安装组件固定连接,抗扭旋转组件转动连接在定位安装组件内部；抗扭旋转组件内部沿环向设置有第一定位组件和第二定位组件。本发明通过屏蔽连接筒、柱形屏蔽环、密封盘和屏蔽盘体的设计,使得第一电缆与第二电缆的连接处始终处于柱形屏蔽环内部,同时利用屏蔽盘体和密封盘对屏蔽连接筒两端进行信号屏蔽,大大提高了射频连接器的抗干扰性能。(The invention discloses a plug-in type coaxial radio frequency connector, and relates to the technical field of radio frequency connectors. The invention includes a shield connection structure; two cable positioning mechanisms are symmetrically arranged in the shielding connecting structure, the shielding connecting structure comprises a shielding connecting cylinder, and a cylindrical shielding ring is fixedly arranged on the inner wall of the shielding connecting cylinder; the cable positioning mechanism comprises a sealing shielding assembly, a positioning installation assembly and an anti-torsion rotating assembly, wherein the sealing shielding assembly is fixedly connected with the positioning installation assembly, and the anti-torsion rotating assembly is rotatably connected inside the positioning installation assembly; the anti-torsion rotating assembly is internally provided with a first positioning assembly and a second positioning assembly along the circumferential direction. According to the invention, through the design of the shielding connecting cylinder, the cylindrical shielding ring, the sealing disc and the shielding disc body, the joint of the first cable and the second cable is always positioned in the cylindrical shielding ring, and meanwhile, the shielding disc body and the sealing disc are used for shielding signals at two ends of the shielding connecting cylinder, so that the anti-interference performance of the radio frequency connector is greatly improved.)

1. A plug-in type coaxial radio frequency connector comprises a shielding connection structure (1); the method is characterized in that: two cable positioning mechanisms (2) are symmetrically arranged in the shielding connecting structure (1), one cable positioning mechanism (2) is coaxially connected with a first cable (3), the other cable positioning mechanism (2) is coaxially connected with a second cable (4), and the first cable (3) is in butt joint with the second cable (4);

the shielding connecting structure (1) comprises a shielding connecting cylinder (101), and a cylindrical shielding ring (102) is fixedly mounted on the inner wall of the shielding connecting cylinder (101);

the cable positioning mechanism (2) comprises a sealing shielding component (5), a positioning mounting component (6) and an anti-torsion rotating component (7), the sealing shielding component (5) and the positioning mounting component (6) are coaxial and fixedly connected, and the anti-torsion rotating component (7) is rotatably connected inside the positioning mounting component (6);

the sealing shielding assembly (5) is in sliding fit with the inner wall of the shielding connecting cylinder (101), and the positioning and mounting assembly (6) is in sliding fit with the inner wall of the cylindrical shielding ring (102);

the anti-torsion rotating assembly (7) is internally provided with a plurality of first positioning assemblies (8) and second positioning assemblies (9) along the annular direction, the first positioning assemblies (8) and the second positioning assemblies (9) are arranged at intervals, and the first positioning assemblies (8) and the second positioning assemblies (9) are arranged oppositely.

2. The coaxial rf connector of claim 1, wherein the shielding connector (101) has anti-slip twist rings (103) fixed to the outer wall thereof near both ends;

both end faces of the cylindrical shielding ring (102) are provided with a plurality of magnetic connecting grooves (104) along the circumferential direction.

3. The plug-type coaxial radio-frequency connector according to claim 2, wherein the sealing shielding component (5) comprises a sealing disc (501), and a plurality of limit blocks are fixed on the peripheral side surface of the sealing disc (501);

the inner wall of the shielding connecting cylinder (101) is provided with a plurality of limiting channels, and the limiting channels are in sliding fit with the limiting blocks;

the side face, close to the cylindrical shielding ring (102), of the sealing disc (501) is provided with a plurality of fixed magnets (502) in the circumferential direction, and the fixed magnets (502) and the magnetic connecting groove (104) are attracted magnetically.

4. The plug-in type coaxial radio frequency connector according to claim 3, wherein the side surface of the sealing disc (501) close to the cylindrical shielding ring (102) is provided with a plurality of through sliding holes along the circumferential direction, the inside of each through sliding hole is in sliding fit with a connecting rod (503), the end surface of each connecting rod (503) far away from the cylindrical shielding ring (102) is fixed with a shielding disc body (504), the end surface of each connecting rod (503) close to the cylindrical shielding ring (102) is fixed with a connecting disc (505), and a movable elastic element (506) is fixed between the connecting disc (505) and the sealing disc (501);

the peripheral side surface of the sealing disc (501) and the peripheral side surface of the shielding disc body (504) are in sliding fit with the inner wall of the shielding connecting cylinder (101);

first cable holes (507) are formed in the center of the sealing disc (501) and the center of the shielding disc body (504).

5. A plug-type coaxial rf connector according to claim 1, wherein the positioning and mounting assembly (6) comprises a hollow disc body (601), a magnetic ring (602) is fixed on a side surface of the hollow disc body (601) close to the cylindrical shielding ring (102), and two magnetic rings (602) oppositely arranged inside the cylindrical shielding ring (102) are magnetically attracted to each other;

the inner wall of the hollow disc body (601) is provided with an annular channel (603) which is coaxial with the hollow disc body (601).

6. The coaxial RF connector of claim 5, wherein the anti-rotation assembly (7) comprises a support plate (701), a plurality of arc-shaped mating blocks (702) are fixed on the peripheral side of the support plate (701), and the arc-shaped mating blocks (702) are slidably fitted with the annular groove (603);

the center of the supporting disc (701) and the center of the hollow disc body (601) are both provided with a second cable hole (703); a plurality of mounting pore channels (704) are formed in one side face of the supporting plate (701) along the circumferential direction, and the mounting pore channels (704) are communicated with the second cable hole (703).

7. A coaxial RF connector according to claim 6, characterized in that the first positioning element (8) and the second positioning element (9) are fixed inside the mounting duct (704);

first locating component (8) and second locating component (9) all include a location section of thick bamboo (801), an open-ended medial surface is kept away from in a location section of thick bamboo (801) and articulates there is loop bar (802), loop bar (802) one end through connection has arc connecting block (803), be fixed with arc elastic component (804) between arc connecting block (803) and a location section of thick bamboo (801) inner wall.

8. The plug-type coaxial radio frequency connector according to claim 7, wherein a supporting rod (805) is slidably fitted inside the sleeve rod (802), a positioning ball (806) is fixed at one end of the supporting rod (805), a restoring elastic member (807) is fixed between the positioning ball (806) and the arc-shaped connecting block (803), and the restoring elastic member (807) is sleeved outside the supporting rod (805);

the positioning ball (806) of the first positioning assembly (8) and the positioning ball (806) of the second positioning assembly (9) are arranged in opposite directions;

the corresponding positioning ball (806) at the position of the first cable (3) is tightly attached to the outer surface of the first cable (3), and the corresponding positioning ball (806) at the position of the second cable (4) is tightly attached to the outer surface of the second cable (4).

Technical Field

The invention belongs to the technical field of radio frequency connectors, and particularly relates to a plug-in type coaxial radio frequency connector.

Background

The radio frequency coaxial connector is used for coaxial connection of two sections of radio frequency cables and plays a role in bridge connection. The radio frequency connector is generally used for being connected to a cable or equipment to electrically connect a transmission line system, radio frequency signals are widely used in the field of signal transmission due to the advantages of wide frequency band, strong attenuation resistance and the like, and the structure of the connector needs to be adjusted correspondingly in order to improve the shielding performance.

However, in the process of implementing the specific embodiment of the present invention, the inventor of the present application finds that the rf connector in the prior art still has the following drawbacks: (1) the shielding structure at the joint of two sections of cables in the existing radio frequency connector is single, so that the anti-interference effect is poor, and the signal transmission of the radio frequency connector is unstable; (2) when the existing radio frequency connector is used for butting two sections of cables, the butting of the two cables can be realized only by inserting the connectors of the two sections of cables into specific positions of the radio frequency connector, the operation is very complicated, the flexibility is poor, and the installation efficiency of the cables in the radio frequency connector is greatly reduced; (3) after the cable is installed in the existing radio frequency connector, the part of the cable in the radio frequency connector cannot rotate, and if the external cable rotates, the cable is easily damaged due to torsion, so that the maintenance cost is greatly increased.

Disclosure of Invention

The invention aims to provide a plug-in type coaxial radio frequency connector, which solves the problem that the anti-interference effect is poor due to the single shielding structure at the joint of two sections of cables in the existing radio frequency connector through the design of a shielding connection structure, a cable positioning mechanism, a sealing shielding assembly, a positioning installation assembly, an anti-torsion rotating assembly, a first positioning assembly and a second positioning assembly, the signal transmission of the radio frequency connector is unstable, when the existing radio frequency connector is used for butting two sections of cables, generally, the joint of two cables can be realized only by inserting the joints of the two cables into specific positions of the radio frequency connector, so that the installation efficiency of the cables in the radio frequency connector is greatly reduced, the part of the cables in the radio frequency connector cannot rotate, and if the external cables rotate, the cables are easily damaged due to torsion, and the maintenance cost is greatly increased.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a plug-in type coaxial radio frequency connector, which comprises a shielding connection structure; two cable positioning mechanisms are symmetrically arranged in the shielding connection structure, one cable positioning mechanism is coaxially connected with a first cable, the other cable positioning mechanism is coaxially connected with a second cable, and the first cable is in butt joint with the second cable; the shielding connecting structure comprises a shielding connecting cylinder, and a cylindrical shielding ring is fixedly arranged on the inner wall of the shielding connecting cylinder; the cable positioning mechanism comprises a sealing shielding assembly, a positioning installation assembly and an anti-torsion rotating assembly, wherein the sealing shielding assembly and the positioning installation assembly are coaxial and fixedly connected, and the anti-torsion rotating assembly is rotatably connected inside the positioning installation assembly; the sealing shielding assembly is in sliding fit with the inner wall of the shielding connecting cylinder, and the positioning and mounting assembly is in sliding fit with the inner wall of the cylindrical shielding ring; the anti-torsion rotating assembly is internally provided with a plurality of first positioning assemblies and second positioning assemblies along the annular direction, the first positioning assemblies and the second positioning assemblies are arranged at intervals, and the first positioning assemblies and the second positioning assemblies are arranged oppositely.

Furthermore, anti-skid torsion rings are fixed on the outer wall of the shielding connecting cylinder close to the two ends;

and a plurality of magnetic connecting grooves are formed in both end faces of the cylindrical shielding ring along the circumferential direction.

Furthermore, the sealing shielding assembly comprises a sealing disc, and a plurality of limiting blocks are fixed on the peripheral side surface of the sealing disc;

the inner wall of the shielding connecting cylinder is provided with a plurality of limiting channels, and the limiting channels are in sliding fit with the limiting blocks;

the side of the sealing disc close to the cylindrical shielding ring is provided with a plurality of fixed magnets along the circumferential direction, and the fixed magnets and the magnetic connecting grooves are magnetically attracted.

Furthermore, a plurality of through slide holes are formed in the side face, close to the cylindrical shielding ring, of the sealing disc in the circumferential direction, connecting rods are matched in the through slide holes in a sliding mode, a shielding disc body is fixed on the end face, far away from the cylindrical shielding ring, of each connecting rod, a connecting disc is fixed on the end face, close to the cylindrical shielding ring, of each connecting rod, and a movable elastic piece is fixed between each connecting disc and the sealing disc;

the peripheral side surface of the sealing disc and the peripheral side surface of the shielding disc body are in sliding fit with the inner wall of the shielding connecting cylinder;

first cable holes are formed in the center of the sealing disc and the center of the shielding disc body.

Furthermore, the positioning and mounting assembly comprises a hollow disc body, magnetic rings are fixed on the side surface of the hollow disc body close to the cylindrical shielding ring, and the two magnetic rings oppositely arranged on the inner side of the cylindrical shielding ring are attracted magnetically;

the inner wall of the hollow disc body is provided with an annular channel which is coaxial with the hollow disc body.

Furthermore, the anti-torsion rotating assembly comprises a supporting plate, a plurality of arc-shaped matching blocks are fixed on the peripheral side surface of the supporting plate, and the arc-shaped matching blocks are in sliding fit with the annular channel;

the central position of the supporting disc and the central position of the hollow disc body are both provided with second cable holes; a plurality of mounting pore canals are circumferentially formed in one side face of the supporting disc and communicated with the second cable hole.

Furthermore, the first positioning assembly and the second positioning assembly are fixed inside the mounting hole;

the first positioning assembly and the second positioning assembly respectively comprise a positioning cylinder, a sleeve rod is hinged to the inner side face, far away from the opening, of the positioning cylinder, one end of the sleeve rod is connected with an arc-shaped connecting block in a through mode, and an arc-shaped elastic part is fixed between the arc-shaped connecting block and the inner wall of the positioning cylinder.

Furthermore, a support rod is slidably matched inside the loop bar, a positioning ball is fixed at one end of the support rod, a reset elastic piece is fixed between the positioning ball and the arc-shaped connecting block, and the reset elastic piece is sleeved outside the support rod;

the positioning ball of the first positioning assembly and the positioning ball of the second positioning assembly are arranged in opposite directions;

the positioning ball corresponding to the first cable is tightly attached to the outer surface of the first cable, and the positioning ball corresponding to the second cable is tightly attached to the outer surface of the second cable.

The invention has the following beneficial effects:

1. according to the invention, through the design of the shielding connecting cylinder, the cylindrical shielding ring, the sealing disc and the shielding disc body, the connecting part of the first cable and the second cable is always positioned in the cylindrical shielding ring, and meanwhile, the shielding disc body and the sealing disc are used for shielding signals at two ends of the shielding connecting cylinder, so that the anti-interference performance of the radio frequency connector is greatly improved, and the stability of signal transmission of the radio frequency connector is greatly improved.

2. According to the invention, the sealing disc, the shielding disc body, the fixed magnet, the cylindrical shielding ring, the magnetic connecting groove, the connecting rod, the movable elastic part, the positioning and mounting assembly and the magnetic rings are arranged, when the fixed magnet is connected in the magnetic connecting groove, the position of the sealing disc is fixed, the cable is pushed towards the inside of the cylindrical shielding ring, and the quick butt joint of the two cables is realized by utilizing the magnetic attraction effect of the two opposite magnetic rings, so that the butt joint of the cable at any position in the cylindrical shielding ring is met, the flexibility is high, and the mounting efficiency of the cable in the radio frequency connector is greatly improved.

3. According to the invention, through the design of the hollow disc body, the annular channel, the arc-shaped matching block, the anti-torsion rotating assembly, the first positioning assembly and the second positioning assembly, after the cable is installed on the radio frequency connector, the anti-torsion rotating assembly can slide in the hollow disc body, the damage of the cable caused by torsion generated by rotation of an external cable can be avoided, and the service life of the cable is further greatly prolonged.

4. According to the invention, through the design of the loop bar, the arc-shaped connecting block, the arc-shaped elastic element, the supporting rod, the positioning ball and the reset elastic element, all structures in the first positioning assembly are arranged in a reverse direction with the corresponding structures in the second positioning assembly, two clamping forces with the same size and opposite directions are applied to the cable between the first positioning assembly and the second positioning assembly, and the two forces are mutually offset when the cable is static, so that the stable clamping of the cable is realized.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a plug-in coaxial rf connector.

Fig. 2 is a schematic view of the internal structure of fig. 1.

Fig. 3 is a schematic structural diagram of a shield connection structure.

Fig. 4 is a side view of the structure of fig. 3.

Fig. 5 is a cross-sectional view of a longitudinal structure of fig. 3.

Fig. 6 is a schematic structural view of the cable positioning mechanism.

Fig. 7 is a schematic view of a hermetically sealed shielding assembly.

Fig. 8 is a schematic structural view of fig. 7 at another angle.

FIG. 9 is a schematic view of the anti-rotation device and the first positioning device in use.

Fig. 10 is a cross-sectional view of the structure of fig. 9.

Fig. 11 is a schematic view of the internal structure of the positioning and mounting assembly.

FIG. 12 is a schematic view of a construction of the anti-twist assembly.

In the drawings, the components represented by the respective reference numerals are listed below:

1-shield connection structure, 101-shield connection cylinder, 102-cylindrical shield ring, 103-anti-slip torsion ring, 104-magnetic connection groove, 2-cable positioning mechanism, 3-first cable, 4-second cable, 5-seal shield component, 501-seal disc, 502-fixed magnet, 503-connection rod, 504-shield disc body, 505-connection disc, 506-movable elastic piece, 507-first cable hole, 6-positioning installation component, 601-hollow disc body, 602-magnetic ring, 603-annular groove channel, 7-anti-torque rotation component, 701-support disc, 702-arc matching block, 703-second cable hole, 704-installation pore channel, 8-first positioning component, 801-positioning cylinder, 802-loop bar, 803-arc connecting block, 804-arc elastic piece, 805-supporting rod, 806-positioning ball, 807-resetting elastic piece and 9-second positioning component.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-12, the present invention is a plug-in coaxial rf connector, including a shielding connection structure 1; two cable positioning mechanisms 2 are symmetrically arranged in the shielding connecting structure 1, wherein one cable positioning mechanism 2 is coaxially connected with a first cable 3, the other cable positioning mechanism 2 is coaxially connected with a second cable 4, and the first cable 3 is in butt joint with the second cable 4;

the shielding connecting structure 1 comprises a shielding connecting cylinder 101, and a cylindrical shielding ring 102 is fixedly arranged on the inner wall of the shielding connecting cylinder 101 and used for shielding external signals at the butt joint of the first cable 3 and the second cable 4, so that the anti-interference performance is greatly improved;

the cable positioning mechanism 2 comprises a sealing shielding component 5, a positioning installation component 6 and an anti-torsion rotating component 7, the sealing shielding component 5 and the positioning installation component 6 are coaxial and fixedly connected, and the anti-torsion rotating component 7 is rotatably connected inside the positioning installation component 6;

the sealing shielding assembly 5 is in sliding fit with the inner wall of the shielding connecting cylinder 101, and the positioning and mounting assembly 6 is in sliding fit with the inner wall of the cylindrical shielding ring 102 so as to ensure that a cable joint mounted at the positioning and mounting assembly 6 is always positioned on the inner side of the cylindrical shielding ring 102;

the anti-torsion rotating assembly 7 is internally provided with a plurality of first positioning assemblies 8 and second positioning assemblies 9 along the annular direction, the first positioning assemblies 8 and the second positioning assemblies 9 are arranged at intervals, the first positioning assemblies 8 and the second positioning assemblies 9 are arranged oppositely, and under the combined action of the first positioning assemblies 8 and the second positioning assemblies 9, the first cable 3 and the second cable 4 are stably positioned and clamped.

Wherein, the outer wall of the shielding connecting cylinder 101 is fixed with anti-skid twisting rings 103 near both ends; both end faces of the cylindrical shielding ring 102 are provided with a plurality of magnetic connecting grooves 104 along the circumferential direction;

the sealing shielding component 5 comprises a sealing disc 501, and a plurality of limiting blocks are fixed on the peripheral side surface of the sealing disc 501; the inner wall of the shielding connecting cylinder 101 is provided with a plurality of limiting channels, and the limiting channels are in sliding fit with the limiting blocks;

the side of the sealing disc 501 close to the cylindrical shielding ring 102 is provided with a plurality of fixed magnets 502 along the circumferential direction, the fixed magnets 502 and the magnetic connecting groove 104 are magnetically attracted, the sealing disc 501 can be limited at two ends of the cylindrical shielding ring 102, sealing of two ports of the cylindrical shielding ring 102 is achieved, and a certain external signal blocking effect is achieved.

The side surface of the sealing disc 501 close to the cylindrical shielding ring 102 is provided with a plurality of through sliding holes along the circumferential direction, connecting rods 503 are in sliding fit in the through sliding holes, a shielding disc body 504 is fixed on the end surface of the connecting rods 503 far away from the cylindrical shielding ring 102, a connecting disc 505 is fixed on the end surface of the connecting rods 503 close to the cylindrical shielding ring 102, and a movable elastic piece 506 is fixed between the connecting disc 505 and the sealing disc 501;

the peripheral side surface of the sealing disc 501 and the peripheral side surface of the shielding disc body 504 are in sliding fit with the inner wall of the shielding connecting cylinder 101, and the shielding disc bodies 504 are arranged at the two ends of the shielding connecting cylinder 101, so that signal shielding at the two ends of the shielding connecting cylinder 101 is realized;

first cable hole 507 has been all seted up with shielding disk body 504 central point to sealed dish 501 central point, and the cable can pass first cable hole 507 and with first cable hole 507 sliding fit.

The positioning and mounting assembly 6 comprises a hollow disc body 601, a magnetic ring 602 is fixed on the side surface of the hollow disc body 601 close to the cylindrical shielding ring 102, the two magnetic rings 602 arranged oppositely on the inner side of the cylindrical shielding ring 102 are magnetically attracted, and when the two magnetic rings 602 arranged oppositely are magnetically attracted, the first cable 3 is successfully butted with the second cable 4;

when the sealing disc 501 is limited at two ends of the cylindrical shielding ring 102, the cable is pushed to enable the hollow disc body 601 to slide on the inner wall of the cylindrical shielding ring 102, and the shielding disc body 504 slides on the inner wall of the shielding connecting cylinder 101 under the combined action of the movable elastic piece 506 and the connecting rod 503, when the two magnetic rings 602 which are oppositely arranged are magnetically attracted, the first cable 3 and the second cable 4 are successfully butted, the butted position is located at the inner side of the cylindrical shielding ring 102, at the moment, the cables are in a static state, and the stress condition of the outer surface of the cables is as shown in fig. 10;

the inner wall of the hollow disc body 601 is provided with an annular groove 603 which is coaxial with the hollow disc body 601.

The anti-torsion rotating assembly 7 comprises a supporting plate 701, a plurality of arc-shaped matching blocks 702 are fixed on the peripheral side face of the supporting plate 701, and the arc-shaped matching blocks 702 are in sliding fit with the annular groove channel 603; after the radio frequency connector is provided with the cable, the anti-torsion rotating assembly 7 can slide in the hollow disc body 601, so that the cable cannot be damaged due to torsion generated by rotation of an external cable, and the service life of the cable is greatly prolonged;

a second cable hole 703 is formed in the center of the supporting disc 701 and the center of the hollow disc body 601; a plurality of mounting holes 704 are circumferentially formed in one side surface of the support plate 701, and the mounting holes 704 are communicated with the second cable hole 703.

Wherein, the first positioning component 8 and the second positioning component 9 are both fixed inside the mounting hole 704;

the first positioning assembly 8 and the second positioning assembly 9 both comprise a positioning cylinder 801, a loop bar 802 is hinged to the inner side face, away from the opening, of the positioning cylinder 801, one end of the loop bar 802 is connected with an arc-shaped connecting block 803 in a run-through mode, an arc-shaped elastic piece 804 is fixed between the arc-shaped connecting block 803 and the inner wall of the positioning cylinder 801, and the arc-shaped elastic piece 804 is always in a powerful compression mode in the cable drawing movement process;

a supporting rod 805 is slidably matched inside the loop bar 802, a positioning ball 806 is fixed at one end of the supporting rod 805, a resetting elastic piece 807 is fixed between the positioning ball 806 and the arc-shaped connecting block 803, and the resetting elastic piece 807 is sleeved outside the supporting rod 805; during the cable pulling movement, the positioning ball 806 is pressed, so that the return elastic member 807 is compressed and the supporting bar 805 slides towards the inside of the loop bar 802;

the positioning ball 806 of the first positioning component 8 is arranged in the opposite direction to the positioning ball 806 of the second positioning component 9;

the positioning ball 806 corresponding to the first cable 3 is tightly attached to the outer surface of the first cable 3, and the positioning ball 806 corresponding to the second cable 4 is tightly attached to the outer surface of the second cable 4;

according to the stress situation of the outer surface of the cable at rest in fig. 10, the positioning ball 806 in the first positioning assembly 8 applies a resultant force F1 to the cable under the compressive elastic forces of the arc-shaped elastic member 804 and the restoring elastic member 807, the resultant force is a component F12 in the radial direction of the cable and a component F11 in the axial direction of the cable, respectively, the positioning ball 806 in the second positioning assembly 9 applies a resultant force F2 to the cable under the compressive elastic forces of the arc-shaped elastic member 804 and the restoring elastic member 807, the resultant force is a component F22 in the radial direction of the cable and a component F21 in the axial direction of the cable, respectively, the component F12 is equal to and opposite to the component F22, and is offset, and the component F11 is equal to and opposite to the component F21, so as to achieve stable clamping and positioning of the cable after rest.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.