A bending-resistant and fatigue-resistant cable

Abstract

The present invention discloses a bending and fatigue resistant cable, which belongs to the technical field of cable structure, and comprises a cable housing, wherein a cable runs through the cable housing; a bending resistant unit, which is slidably connected inside the cable housing; a linkage unit, which is slidably connected inside the cable housing, and the two ends are respectively rotatably connected to two groups of bending resistant units; a connector unit, which is slidably connected to the end of the cable housing; and an adjustment unit, which is rotatably connected to the end surface of the cable housing, and the end is hinged on the connector unit. When the cable is bent, the bending resistant units on the outside of the bending position of the cable housing will be stretched, and the bending resistant units on the inside of the bending position of the cable housing will be compressed by the linkage unit, thereby increasing the effect of alleviating the damage to the bending position of the cable housing. By rotating the adjustment unit, the connector unit will be stretched or brought together with the cooperation of the adjustment unit, so as to facilitate the connection of the end of the cable housing to the connector for the wiring harness assembly of different specifications.

Description

Technical Field

[0001] The invention relates to the technical field of cable structures, in particular to a bending-resistant and fatigue-resistant cable. Background Art

[0002] A Chinese patent (authorization announcement number: CN221726808U) discloses a bending-resistant drag chain cable, including a drag chain cable shell and a cable core. The drag chain cable also includes: a buffer airbag and a fixed shell. The inner circumference of the drag chain cable shell is covered with a protective sleeve layer, the inner circumference of the protective sleeve layer is covered with a buffer layer, the inner surface wall of the buffer layer is fixedly connected to a buffer airbag, and a connection port is opened on one side of the buffer airbag. The beneficial effects of this patent are: when subjected to bending, the outer part of the drag chain cable shell bends from both sides of the groove to the center to relieve the bending fatigue generated on the outside, the buffer airbag in the buffer layer inside the drag chain cable shell is squeezed, and the gas in the squeezed part enters the surrounding buffer airbag from the connection port to relieve the damage caused by bending, and the fixed shell can separate the cable core to avoid entanglement, thereby improving the use effect of the product.

[0003] The bending-resistant drag chain cable in the above technical solution also has the following defects when in use: the ends of the cables in the prior art are all fixed power plugs, which can usually only be connected to one type of connector for a wiring harness assembly and cannot adapt to connectors for wiring harness assemblies of different specifications. Therefore, it is necessary to provide a bending-resistant and fatigue-resistant cable to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the embodiments of the present invention is to provide a bending-resistant and fatigue-resistant cable to solve the problems in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A bending and fatigue resistant cable, comprising:

[0007] A cable housing, wherein a cable runs through the cable housing;

[0008] The bending resistance unit is slidably connected to the inside of the cable housing to alleviate the damage to the cable housing when it is bent;

[0009] The linkage unit is slidably connected in the cable housing, and both ends are rotatably connected to the two sets of bending-resistant units, so as to realize transmission between the two sets of bending-resistant units;

[0010] A connector unit is slidably connected to the end of the cable housing and is used to connect and fix the end of the cable housing;

[0011] The adjusting unit is rotatably connected to the end surface of the cable housing, and the end is hinged on the joint unit, and is used to cooperate with the joint unit to realize the installation joint of the end of the cable housing.

[0012] As a preferred technical solution of the present invention, the bending-resistant unit includes: a groove, which is opened on the surface of the cable housing, and two groups of wear-resistant blocks are slidably connected inside; an elastic member, which is connected between the two groups of wear-resistant blocks; a positioning rod, which is fixed on the inner wall of the groove, and the wear-resistant block is slidably connected to the surface of the positioning rod.

[0013] As a preferred technical solution of the present invention, the linkage unit includes: a rotating shaft, rotatably connected in the groove, with a half gear installed on the surface; a rack, opened on the side of the wear-resistant block, and meshingly connected with the half gear; a sliding rod, slidably connected in the cable housing, with two sets of brackets fixed at both ends; a rotating frame, fixed at the end of the half gear, and the end of the rotating frame away from the half gear is hinged to the two sets of brackets through two sets of connecting rods.

[0014] As a preferred technical solution of the present invention, the two groups of elastic members corresponding to the two ends of the sliding rod are connected through an air guide tube.

[0015] As a preferred technical solution of the present invention, the connector unit includes: a connector, which is fixed at the end of the cable housing and has at least four groups of radiation frames connected to the surface; a clamping frame, which has a slide groove on the side, and the clamping frame is slidably connected to the surface of the radiation frame through the slide groove; a positioning piece, which is fixed on the side of the clamping frame, and the positioning piece is at least three groups; an external card slot, which is opened on the outside of the clamping frame.

[0016] As a preferred technical solution of the present invention, the adjustment unit includes: an adjustment ring, the interior of which is connected to the end surface of the cable housing through a thread; a sliding cylinder, which is slidably connected to the surface of the cable housing and has a circular groove on the outside; an L-shaped column, one end of which is fixed to the end of the adjustment ring, and the other end of the L-shaped column is slidably connected to the inside of the circular groove; an arc rod, one end of which is hinged to the outside of the sliding cylinder and the other end is hinged to the side of the clamping frame.

[0017] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: in the present invention, when the cable housing and the cable are bent, the anti-bending unit on the outside of the bending position of the cable housing will be stretched, which can alleviate the damage to the bending position of the cable housing. At the same time, the anti-bending units on the inside of the bending position of the cable housing will automatically compress each other under the action of the linkage unit, thereby increasing the effect of alleviating the damage to the bending position of the cable housing.

[0018] Compared with the prior art in which the plug at the end of the cable can only be connected to one type of connector for a wiring harness assembly, the embodiments of the present invention provide a connector unit and an adjustment unit. When the cable housing is connected, the end of the cable housing is inserted into the wire insertion hole of the connector for the wiring harness assembly, and the adjustment unit is rotated. The connector unit will be expanded or closed with the cooperation of the adjustment unit, which makes it easy to connect the end of the cable housing to connectors for wiring harness assemblies of different specifications without replacing the clamp, and has the advantage of convenient connection.

[0019] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the overall structure of a bending-resistant and fatigue-resistant cable provided in an embodiment of the present invention.

[0021] Figure 2 Schematic diagram of the structure of the joint unit provided in an embodiment of the present invention.

[0022] Figure 3 The figure is a schematic diagram of the internal structure of a cable housing provided in an embodiment of the present invention.

[0023] Figure 4 for Figure 3 A partial enlarged view of part A.

[0024] Figure 5 for Figure 1 A partial enlarged view of part B.

[0025] Figure 6 It is a schematic diagram of the structure of the clamping frame provided in an embodiment of the present invention.

[0026] Figure numerals: 1. cable housing; 11. cable; 2. bending-resistant unit; 21. groove; 22. wear-resistant block; 23. elastic member; 24. positioning rod; 3. linkage unit; 31. rotating shaft; 32. half gear; 33. rack; 34. rotating frame; 35. connecting rod; 36. sliding rod; 37. bracket; 4. joint unit; 41. connector; 42. radial frame; 43. clamping frame; 431. slide groove; 432. positioning member; 433. external slot; 5. adjustment unit; 51. adjustment ring; 52. sliding cylinder; 521. circular groove; 53. L-shaped column; 54. arc rod. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0029] See also Figure 1 to Figure 6 , a bending and fatigue resistant cable, comprising:

[0030] A cable housing 1, wherein a cable 11 runs through the cable housing 1;

[0031] The bending resistance unit 2 is slidably connected to the inside of the cable housing 1, and is used to alleviate the damage to the cable housing 1 when it is bent;

[0032] The linkage unit 3 is slidably connected in the cable housing 1, and both ends are rotatably connected to the two groups of bending-resistant units 2, so as to realize transmission between the two groups of bending-resistant units 2;

[0033] The connector unit 4 is slidably connected to the end of the cable housing 1 and is used to connect and fix the end of the cable housing 1;

[0034] The adjusting unit 5 is rotatably connected to the end surface of the cable housing 1 , and the end is hinged on the connector unit 4 , and is used to cooperate with the connector unit 4 to realize the installation connector of the end of the cable housing 1 .

[0035] In an embodiment of the present invention, when the cable housing 1 and the cable 11 are bent, the anti-bending unit 2 on the outside of the bending position of the cable housing 1 will be stretched, which can alleviate the damage to the bending position of the cable housing 1. At the same time, the anti-bending unit 2 on the inside of the bending position of the cable housing 1 will automatically compress each other under the action of the linkage unit 3, thereby increasing the effect of alleviating the damage to the bending position of the cable housing 1.

[0036] When the cable housing 1 is connected, the end of the cable housing 1 is inserted into the wire insertion hole of the connector for the wiring harness assembly, and the adjustment unit 5 is rotated. The connector unit 4 will be opened or closed under the action of the adjustment unit 5, so that the end of the cable housing 1 can be connected to connectors for wiring harness assemblies of different specifications without replacing the clamp, which is more convenient to use.

[0037] In one embodiment of the present invention, Figure 1 and Figure 4 As shown, the bending resistance unit 2 includes:

[0038] The groove 21 is formed on the surface of the cable housing 1, and two sets of wear-resistant blocks 22 are slidably connected therein;

[0039] An elastic member 23 connected between the two sets of wear-resistant blocks 22;

[0040] The positioning rod 24 is fixed on the inner wall of the groove 21 , and the wear-resistant block 22 is slidably connected to the surface of the positioning rod 24 .

[0041] In this embodiment, the cable housing 1 is composed of a semiconductor water-blocking layer, a nylon non-woven fabric wrapping layer, a fireproof layer, a polytetrafluoroethylene propylene insulation layer, etc., which can provide protection for the cable 11 and has the advantages of bending resistance and fatigue resistance.

[0042] When the cable housing 1 and the cable 11 are bent, the two groups of wear-resistant blocks 22 in the groove 21 outside the bending position of the cable housing 1 will move away from each other. In the process of moving away from each other, the two groups of wear-resistant blocks 22 will stretch the elastic member 23 between them, thereby alleviating the damage to the outside of the bending position of the cable housing 1. At the same time, the two groups of wear-resistant blocks 22 in the groove 21 inside the bending position of the cable housing 1 will move closer to each other. In the process of moving closer to each other, the two groups of wear-resistant blocks 22 will compress the elastic member 23 between them, thereby alleviating the damage to the inside of the bending position of the cable housing 1.

[0043] During the sliding process of the two groups of wear-resistant blocks 22, the positioning rods 24 can guide and limit the wear-resistant blocks 22 to prevent the wear-resistant blocks 22 from falling out of the grooves 21. The elastic member 23 can be a spring, elastic rubber or elastic airbag to facilitate stretching or compressing the two groups of wear-resistant blocks 22, and no limitation is made here.

[0044] In one embodiment of the present invention, Figure 3 and Figure 4 As shown, the linkage unit 3 includes:

[0045] A rotating shaft 31 is rotatably connected in the groove 21 and has a half gear 32 mounted on its surface;

[0046] The rack 33 is provided on the side of the wear-resistant block 22 and is meshedly connected with the half gear 32;

[0047] A slide bar 36 is slidably connected in the cable housing 1, and two sets of brackets 37 are fixed at both ends;

[0048] The rotating frame 34 is fixed to the end of the half gear 32 , and the end of the rotating frame 34 away from the half gear 32 is hinged to the two sets of brackets 37 through two sets of connecting rods 35 .

[0049] In this embodiment, when the two groups of wear-resistant blocks 22 in the outer groove 21 of the bending position of the cable housing 1 move away from each other, the two groups of wear-resistant blocks 22 can drive the racks 33 on their sides to slide synchronously away from each other during the moving away process. Since the two groups of racks 33 are respectively meshed with the two groups of half gears 32, the two groups of half gears 32 will drive the corresponding rotating shafts 31 to rotate in the opposite direction in the groove 21 under the action of the racks 33. During the reverse rotation, the two groups of half gears 32 can drive the rotating frames 34 at their ends to rotate synchronously. The two groups of connecting rods 35 will push the sliding rods 36 to slide toward the outside of the bending position of the cable housing 1 through the bracket 37 under the action of the corresponding rotating frames 34.

[0050] Since the end of the slide bar 36 close to the inner side of the bending position of the cable housing 1 (hereinafter referred to as the other end) is also connected to the bracket 37, the slide bar 36 will drive the two groups of brackets 37 at the other end to slide synchronously, and the two groups of brackets 37 will drive the corresponding two groups of half gears 32 to rotate in the opposite direction through the connecting rod 35, and the two groups of half gears 32 will drive the corresponding rotating shaft 31 to rotate in the opposite direction. At the same time, the two groups of half gears 32 will drive the corresponding two groups of wear-resistant blocks 22 to approach each other through the racks 33 connected thereto, so the two groups of wear-resistant blocks 22 will compress the elastic member 23 between them.

[0051] By setting the linkage unit 3, when the two groups of wear-resistant blocks 22 in the groove 21 outside the bending position of the cable housing 1 move away from each other, the two groups of wear-resistant blocks 22 in the groove 21 inside the bending position of the cable housing 1 will move closer to each other under the action of the linkage unit 3, and compress the elastic member 23 between them. Therefore, when the elastic member 23 outside the bending position of the cable housing 1 is stretched, the elastic member 23 inside the bending position of the cable housing 1 will automatically be compressed, which can increase the effect of alleviating damage to the bending position of the cable housing 1.

[0052] In one embodiment of the present invention, the two groups of elastic members 23 corresponding to the two ends of the slide bar 36 are connected through an air duct. In this embodiment, when the elastic member 23 is an elastic airbag, since the two groups of elastic members 23 are connected through the air duct, when the elastic member 23 inside the bending position of the cable housing 1 is compressed, the gas in the group of elastic members 23 will be compressed into the elastic member 23 outside the bending position of the cable housing 1 through the air duct, thereby improving the effect of alleviating damage to the bending position of the cable housing 1.

[0053] In one embodiment of the present invention, Figure 5 and Figure 6 As shown, the joint unit 4 includes:

[0054] The connector 41 is fixed to the end of the cable housing 1, and at least four groups of radiation frames 42 are connected to the surface;

[0055] The clamping frame 43 has a slide groove 431 on its side, and the clamping frame 43 is slidably connected to the surface of the radiation frame 42 through the slide groove 431;

[0056] Positioning members 432 are fixed to the side of the clamping frame 43, and the positioning members 432 are at least three groups;

[0057] The outer slot 433 is disposed on the outer side of the clamping frame 43 .

[0058] In this embodiment, when the ends of the cables 11 are connected, the cables 11 at the ends of the cable housing 1 are respectively inserted into the wire insertion holes of the harness assembly connector, and the harness assembly connector can adopt the existing technology.

[0059] The adjusting unit 5 is rotated, and the adjusting unit 5 can drive the four groups of clamping frames 43 to slide on the corresponding radial frames 42 by connecting with the four groups of clamping frames 43. When the four groups of clamping frames 43 are close to each other on the radial frames 42, the four groups of clamping frames 43 will drive the positioning pieces 432 on the inner walls thereof to slide synchronously until the positioning pieces 432 on the inner walls of the four groups of clamping frames 43 contact the end surface of the connector for the wiring harness assembly, thereby realizing the connection between the end of the cable housing 1 and the connector for the wiring harness assembly.

[0060] When the four groups of clamping frames 43 are away from each other on the radiation frame 42, the clamping frames 43 will also drive the positioning pieces 432 on the outside to slide synchronously until the outer card grooves 433 on the outside of the four groups of clamping frames 43 touch the inner wall of the wire insertion hole, so that the connection of the end of the cable housing 1 can be realized. Since the positioning pieces 432 on the inner wall of the clamping frames 43 and the outer card grooves 433 on the outside can realize the snap connection of the clamping frames 43, it is convenient to connect the end of the cable housing 1 to the connectors for wire harness assemblies of different specifications, which is more convenient to use.

[0061] In one embodiment of the present invention, Figure 1 and Figure 5 As shown, the adjustment unit 5 includes:

[0062] The adjusting ring 51 is internally connected to the end surface of the cable housing 1 through threads;

[0063] The sliding cylinder 52 is slidably connected to the surface of the cable housing 1 and has a circular groove 521 on the outer side;

[0064] An L-shaped column 53, one end of which is fixed to the end of the adjustment ring 51, and the other end of the L-shaped column 53 is slidably connected inside the circular groove 521;

[0065] The arc rod 54 has one end hinged to the outside of the sliding cylinder 52 and the other end hinged to the side of the clamping frame 43 .

[0066] In this embodiment, the adjusting ring 51 is rotated. Since the adjusting ring 51 and the end surface of the cable housing 1 are connected by a thread, the adjusting ring 51 will slide on the end of the cable housing 1. When sliding, the adjusting ring 51 can drive the L-shaped column 53 to slide synchronously. Since the end of the L-shaped column 53 is slidably connected in the smooth groove 521, the sliding cylinder 52 will slide synchronously on the end surface of the cable housing 1 under the action of the smooth groove 521 and the end of the L-shaped column 53.

[0067] When the sliding cylinder 52 slides toward the end of the cable housing 1, the sliding cylinder 52 will drive the four groups of clamping frames 43 to slide outward on the corresponding radial frames 42 through the four groups of arc rods 54, so that the four groups of clamping frames 43 move away from each other until the outer card groove 433 on the outer side of the clamping frame 43 contacts the inner wall of the wire insertion hole of the connector for the wiring harness assembly, thereby realizing the connection of the end of the cable housing 1.

[0068] When the sliding cylinder 52 slides away from the end of the cable housing 1, the sliding cylinder 52 will drive the four groups of clamping frames 43 to slide inward on the corresponding radial frames 42 through the four groups of arc rods 54, so that the four groups of clamping frames 43 are close to each other until the positioning pieces 432 on the inner walls of the clamping frames 43 contact the end surface of the connector for the wiring harness assembly, so that the end of the cable housing 1 can be connected to connectors for wiring harness assemblies of different specifications without replacing the clamp, which is more convenient to use.

[0069] The working principle of the present invention is: when the cable housing 1 and the cable 11 are bent, the two groups of wear-resistant blocks 22 in the outer groove 21 of the bending position of the cable housing 1 will move away from each other. In the process of moving away from each other, the two groups of wear-resistant blocks 22 will stretch the elastic member 23 between them, thereby alleviating the damage to the outer side of the bending position of the cable housing 1.

[0070] When the two groups of wear blocks 22 in the groove 21 outside the bending position of the cable housing 1 move away from each other, the two groups of wear blocks 22 in the groove 21 inside the bending position of the cable housing 1 will move closer to each other under the action of the linkage unit 3, and compress the elastic member 23 between them. Therefore, when the elastic member 23 outside the bending position of the cable housing 1 is stretched, the elastic member 23 inside the bending position of the cable housing 1 will automatically be compressed, which can increase the effect of alleviating damage to the bending position of the cable housing 1.

[0071] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bending and fatigue resistant cable, characterized in that: The bending and fatigue resistant cable comprises: A cable housing (1), wherein a cable (11) runs through the cable housing (1); The bending-resistant unit (2) is slidably connected to the inside of the cable housing (1) and is used to alleviate the damage to the cable housing (1) when it is bent. The bending-resistant unit (2) comprises: a groove (21) provided on the surface of the cable housing (1), and two groups of wear-resistant blocks (22) are slidably connected inside; an elastic member (23) connected between the two groups of wear-resistant blocks (22); a positioning rod (24) fixed on the inner wall of the groove (21), and the wear-resistant block (22) is slidably connected to the surface of the positioning rod (24); The linkage unit (3) is slidably connected in the cable housing (1), and its two ends are respectively rotatably connected to the two groups of bending-resistant units (2) for realizing transmission between the two groups of bending-resistant units (2). The linkage unit (3) comprises: a rotating shaft (31) rotatably connected in the groove (21) and having a half gear (32) mounted on its surface; a rack (33) provided on the side of the wear-resistant block (22) and meshingly connected with the half gear (32); a sliding rod (36) slidably connected in the cable housing (1) and having two groups of brackets (37) fixed at both ends; a rotating frame (34) fixed at the end of the half gear (32), and the end of the rotating frame (34) away from the half gear (32) is hinged to the two groups of brackets (37) through two groups of connecting rods (35); A connector unit (4) is slidably connected to the end of the cable housing (1) and is used to connect and fix the end of the cable housing (1); The adjustment unit (5) is rotatably connected to the end surface of the cable housing (1), and the end is hinged on the joint unit (4), and is used to cooperate with the joint unit (4) to realize the installation joint of the end of the cable housing (1).

2. The bending-resistant and fatigue-resistant cable according to claim 1, characterized in that: The two groups of elastic members (23) corresponding to the two ends of the sliding rod (36) are connected via an air guide tube.

3. The bending-resistant and fatigue-resistant cable according to claim 1, characterized in that: The joint unit (4) comprises: A connector (41) is fixed to the end of the cable housing (1) and has at least four groups of radiation frames (42) connected to its surface; A clamping frame (43) is provided with a slide groove (431) on the side thereof, and the clamping frame (43) is slidably connected to the surface of the radiation frame (42) through the slide groove (431); Positioning members (432) are fixed on the side of the clamping frame (43), and the positioning members (432) are at least three groups; The outer card slot (433) is arranged on the outer side of the clamping frame (43).

4. The bending-resistant and fatigue-resistant cable according to claim 3, characterized in that: The regulating unit (5) comprises: An adjusting ring (51) is internally connected to the end surface of the cable housing (1) via threads; A sliding cylinder (52) is slidably connected to the surface of the cable housing (1) and has a circular groove (521) formed on the outer side; An L-shaped column (53), one end of which is fixed to the end of the adjustment ring (51), and the other end of the L-shaped column (53) is slidably connected inside the circular groove (521); The arc-shaped rod (54) has one end hinged on the outside of the sliding cylinder (52) and the other end hinged on the side of the clamping frame (43).

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