Bending-resistant cable
By using a second liner and a first liner made of thermoplastic elastomer material in the cable, and providing support and polyurethane gel in its internal structure, the problem of deformation and damage of the cable during bending or extrusion is solved, and a higher bending resistance and service life is achieved.
Patent Information
- Application Number
- CN202422077877.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-27
AI Technical Summary
Existing cables are prone to deformation and damage when bent or squeezed, which affects their service life.
A second liner made of thermoplastic elastomer material is adopted, and a plurality of wire cores are installed in the pipe walls. The wire core is covered with an inner protective layer. The second liner is penetrated with a first liner, and a support is provided between the two, and the buffer space is filled with polyurethane gel.
It improves the flexibility and elasticity of the cable, enhances its bending resistance, and can produce elastic deformation and restore its original state when stretched, twisted and bent, thereby extending the service life of the cable.
Smart Images
Figure CN222952854U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cables, in particular to a bending-resistant cable. Background Art
[0002] A cable is a device for transmitting electric energy or signals, usually composed of several or several groups of wires. During the process of laying cables, the cables are often stretched, twisted and bent. Most of the existing cables only rely on a protective layer or an inner liner to protect their cores. The single protective layer and inner liner have poor resilience and bending resistance. When the cable is bent or squeezed, it is prone to deformation and damage, which in turn affects the service life of the cable. Utility Model Content
[0003] In view of this, the purpose of the utility model is to provide a bending-resistant cable to solve the technical problem that most cables in the prior art rely solely on a protective layer or an inner lining tube to protect their wire cores, have poor resilience and bending resistance, and are prone to deformation and damage when the cable is bent or squeezed, thereby affecting the service life of the cable.
[0004] The utility model is realized by the following technical solutions:
[0005] A bending-resistant cable comprises a first liner tube and a second liner tube inserted into the first liner tube, a support member is arranged between the first liner tube and the second liner tube, the support member divides the annular space between the first liner tube and the second liner tube into a plurality of buffer spaces, and the buffer spaces are filled with elastic fillers;
[0006] A plurality of wire cores are uniformly distributed in the circumferential direction of the wall of the second liner tube, and the outer parts of the plurality of wire cores are all covered with an inner protective layer, while the outer part of the first liner tube is covered with an outer protective layer.
[0007] Furthermore, a steel core is passed through the second liner.
[0008] Furthermore, a plurality of mounting holes are evenly distributed in the tube wall of the second liner along the circumference of the second liner, and a steel bar is correspondingly passed through each of the mounting holes.
[0009] Furthermore, the inner protective layer is composed of an insulating layer, a shielding layer and an inner protective sleeve, and the insulating layer, the shielding layer and the inner protective sleeve are arranged in sequence from the inside to the outside.
[0010] Furthermore, the tube wall of the second liner tube protrudes outward to form a protrusion, and the wire core is installed in the protrusion.
[0011] Furthermore, the first liner, the support member and the first liner are all made of thermoplastic elastomer.
[0012] Furthermore, the elastic filler is polyurethane gel.
[0013] The beneficial effects of the utility model are:
[0014] When the bending-resistant cable of the utility model is in use, the second liner made of thermoplastic elastomer material is arranged in the cable, and multiple wire cores are installed in the tube wall of the second liner in a triangular circular distribution. When the cable is bent, the flexibility and elasticity of the cable can be improved through the deformation of the second liner, which is convenient for the cable to bend and stretch in a complex installation environment, so as to improve the bending resistance of the cable. Secondly, the first liner is passed through the outside of the second liner, and the support member is arranged between the second liner and the first liner for support. The bending resistance of the cable can be further improved through the deformation of the support member and the first liner, and polyurethane gel is filled in the buffer space to improve the sealing, hydrophobicity and impact resistance of the cable, so that the cable can produce elastic deformation to restore its original state when stretched, twisted and bent, thereby improving the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the bending-resistant cable of the utility model.
[0016] Figure 2 For the utility model Figure 1 A magnified view of point A.
[0017] In the figure: 1-first liner, 2-second liner, 3-support, 4-buffer space, 5-elastic filler, 6-wire core;
[0018] 7-inner protective layer, 71-insulating layer, 72-shielding layer, 73-inner protective sleeve;
[0019] 8-outer protective layer, 9-steel core, 10-installation hole, 11-steel bar, 12-protrusion. DETAILED DESCRIPTION
[0020] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.
[0021] In the description of the present application, the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0022] See also Figure 1 and Figure 2 The utility model provides a technical solution: a bending-resistant cable, comprising a first liner tube 1 and a second liner tube 2 inserted in the first liner tube 1, a support member 3 is arranged between the first liner tube 1 and the second liner tube 2, the first liner tube 1, the support member 3 and the first liner tube 1 are all made of thermoplastic elastomer material, which has good flexibility and elasticity, and is conducive to improving the cable's anti-deformation ability;
[0023] The support member 3 divides the annular space between the first liner 1 and the second liner 2 into a plurality of buffer spaces 4, and the buffer spaces 4 are filled with elastic fillers 5, and the elastic fillers 5 are polyurethane gel. The polyurethane gel has excellent sealing and hydrophobic properties, can effectively prevent moisture penetration, and can also be used as a buffer material to protect the cable from external impact and vibration damage. Secondly, the polyurethane gel has good electrical insulation properties;
[0024] In the wall of the second liner 2, a plurality of wire cores 6 are uniformly distributed along the circumference thereof, and the outer parts of the plurality of wire cores 6 are all covered with an inner protective layer 7, and the inner protective layer 7 is composed of an insulating layer 71, a shielding layer 72 and an inner protective sleeve 73, and the insulating layer 71, the shielding layer 72 and the inner protective sleeve 73 are sequentially arranged from the inside to the outside, and the insulating layer 71 is arranged outside the wire core 6 to ensure the insulation performance of the cable, and the shielding layer 72 is arranged to effectively block the interference of external electromagnetic waves on the transmission signal in the cable, etc., and the inner protective sleeve 73 is made of chloroprene rubber. Since chloroprene rubber has good waterproof performance, its molecular structure enables it to resist water penetration, thereby further protecting the cable from the influence of a humid environment, and indirectly maintaining the dry state and electrical performance of the insulating layer 71;
[0025] The first liner 1 is coated with an outer protective layer 8, which includes a fireproof layer and a heat-resistant layer, etc., and can be configured accordingly according to actual needs to ensure the fireproof and heat-resistant capabilities of the cable;
[0026] When the bending-resistant cable of the utility model is in use, the second liner 2 made of thermoplastic elastomer material is arranged in the cable, and the multiple wire cores 6 are installed in the tube wall of the second liner 2 in a triangular circular distribution. When the cable is bent, the flexibility and elasticity of the cable can be improved through the deformation of the second liner 2, which is convenient for the cable to bend and stretch in a complex installation environment, so as to improve the bending resistance of the cable. Secondly, the first liner 1 is passed through the outside of the second liner 2, and the support member 3 is arranged between the second liner 2 and the first liner 1 for support. The bending resistance of the cable can be further improved through the deformation of the support member 3 and the first liner 1, and the buffer space 4 is filled with polyurethane gel to improve the sealing, hydrophobicity and impact resistance of the cable, so that the cable can produce elastic deformation to restore its original state when stretched, twisted and bent, thereby improving the service life of the cable.
[0027] See also Figure 1 A steel core 9 is passed through the second liner tube 2, and a plurality of mounting holes 10 are evenly distributed in the tube wall of the second liner tube 2 along the circumference of the second liner tube 2. A steel bar 11 is passed through each of the mounting holes 10. By arranging the steel core 9 and the steel bar 11 in the second liner tube 2, the strength and bending resistance of the second liner tube 2 can be further improved, thereby improving the bending resistance and tensile strength of the cable.
[0028] See also Figure 1 The wall of the second liner tube 2 protrudes outward to form a protrusion 12, and the wire core 6 is installed in the protrusion 12. Through the protrusion 12, when the cable is bent, the impact force is dispersed, thereby improving the compression resistance of the cable.
[0029] Finally, it should be noted that the above-mentioned implementation is only a preferred implementation of the utility model, and cannot be used to limit the scope of protection of the utility model. Any non-substantial changes and substitutions made by technicians in this field on the basis of the utility model are within the scope of protection required by the utility model.
Claims
1. A bending-resistant cable, characterized in that: The invention comprises a first liner (1) and a second liner (2) inserted into the first liner (1), a support member (3) being arranged between the first liner (1) and the second liner (2), the support member (3) dividing the annular space between the first liner (1) and the second liner (2) into a plurality of buffer spaces (4), the buffer spaces (4) being filled with elastic fillers (5); A plurality of wire cores (6) are uniformly distributed in the circumferential direction of the wall of the second liner tube (2), and the outsides of the plurality of wire cores (6) are coated with an inner protective layer (7), while the outside of the first liner tube (1) is coated with an outer protective layer (8).
2. The bending-resistant cable according to claim 1, characterized in that: A steel core (9) is inserted into the second liner (2).
3. The bending-resistant cable according to claim 1 or 2, characterized in that: Along the circumference of the second liner (2), a plurality of mounting holes (10) are evenly distributed in the wall of the second liner (2), and a steel bar (11) is correspondingly passed through each mounting hole (10).
4. The bending-resistant cable according to claim 1, characterized in that: The inner protective layer (7) is composed of an insulating layer (71), a shielding layer (72) and an inner protective sleeve (73), and the insulating layer (71), the shielding layer (72) and the inner protective sleeve (73) are arranged in sequence from the inside to the outside.
5. The bending-resistant cable according to claim 1, characterized in that: The tube wall of the second liner (2) protrudes outward to form a protruding portion (12), and the wire core (6) is installed in the protruding portion (12).
6. The bending-resistant cable according to claim 1, characterized in that: The first liner (1), the support member (3) and the first liner (1) are all made of thermoplastic elastomer material.
7. The bending-resistant cable according to claim 1, characterized in that: The elastic filler (5) is polyurethane gel.