Flexible cable for inside a robot body

Abstract

The utility model discloses a kind of flexible cables used in robot body inside, including conductor, conductor is equipped with insulating layer, insulating layer is equipped with and is fixedly connected with its shielding layer, shielding layer is equipped with and is fixedly connected with its stress buffer layer, the buffer layer is equipped with and is fixedly connected with its torsion resistance layer, the torsion resistance layer is equipped with and is fixedly connected with its outer sheath.The utility model, by adopting double-layer composite structure buffer layer, can effectively improve the effect of dispersed mechanical stress, provide effective tensile strength, radial elastic buffer, effectively avoid the conductor fracture of the cable in repeated bending, torsion resistance layer is kevlar fiber layer, and cutting resistance is excellent, and bend-resistant strip of memory alloy wire cooperation can provide ultra-high strength to cable, and the effect of anti-torsion deformation, effectively avoid the cable is pulled apart or torsion deformation fracture.

Description

Technical Field

[0001] This utility model relates to the field of flexible cable technology, and more specifically, to a flexible cable for use inside a robot body. Background Technology

[0002] Flexible cables are high-performance cables specifically designed for internal connections in robots and automated equipment. Robots have flexible joints and other structures, and during operation, their internal cables are repeatedly bent. If ordinary flexible cables are used, lacking cushioning and torsional resistance, the internal conductors are highly susceptible to breakage, and the cable itself is prone to torsional deformation or breakage. Utility Model Content

[0003] In view of the problems existing in the prior art, the purpose of this utility model is to provide a flexible cable for use inside a robot body, so as to solve the problems that the conductor inside the cable is prone to breakage and the cable itself is prone to torsional deformation.

[0004] To solve the above problems, the present invention adopts the following technical solution;

[0005] A flexible cable for use inside a robot body includes a conductor, an insulating layer sleeved on the conductor, a shielding layer fixedly connected to the insulating layer, a stress buffer layer fixedly connected to the shielding layer, an anti-torsion layer fixedly connected to the buffer layer, and an outer sheath fixedly connected to the anti-torsion layer.

[0006] The stress buffer layer includes an aramid short fiber layer, which is sleeved on and fixedly connected to the shielding layer. A silicone rubber microsphere layer is sleeved on the outside of the aramid short fiber layer, and the outside of the silicone rubber microsphere layer is fixedly connected to the anti-torsion layer.

[0007] As a further description of the above technical solution:

[0008] The insulating layer is an XLPE layer, and the anti-torsion layer is a Kevlar fiber layer.

[0009] As a further description of the above technical solution:

[0010] The shielding layer includes a copper-plated aluminum foil layer, which is sleeved on and fixedly connected to the insulating layer. A diagonally woven tin-plated copper mesh layer is sleeved on the outside of the copper-plated aluminum foil layer and fixedly connected thereto. An iron-silicon-aluminum magnetic powder coating is sleeved on the outside of the diagonally woven tin-plated copper mesh layer and fixedly connected thereto. The outside of the iron-silicon-aluminum magnetic powder coating is fixedly connected to the aramid short fiber layer.

[0011] As a further description of the above technical solution:

[0012] The anti-torsion layer is embedded with ring-shaped anti-bending strips, which are shape memory alloy wires.

[0013] As a further description of the above technical solution:

[0014] The conductor is coated with a reinforcing layer, which is a carbon nanotube reinforcing layer.

[0015] As a further description of the above technical solution:

[0016] The outer sheath is a polyurethane layer, and wear-resistant strips are fixedly connected to the outer side of the outer sheath in a ring.

[0017] Compared with existing technologies, the advantages of this utility model are:

[0018] This solution employs a double-layer composite buffer layer, which effectively enhances the dispersion of mechanical stress, provides effective tensile strength, and offers radial elastic buffering to effectively prevent conductor breakage during repeated bending. The anti-torsion layer is a Kevlar fiber layer with excellent cut resistance, which, together with the shape memory alloy wire anti-bending strip, provides the cable with ultra-high strength and resistance to torsional deformation, effectively preventing the cable from being pulled apart or torsionally deformed and broken.

[0019] The shielding layer adopts a composite three-layer structure design. The copper-plated aluminum foil layer can reflect high-frequency electromagnetic interference and reduce skin effect resistance. The obliquely woven tin-plated copper mesh layer can provide mechanical protection and cover the shielding gaps at multiple angles. The iron-silicon-aluminum magnetic powder coating can absorb low-frequency magnetic field interference and improve the cable's flexibility. Attached Figure Description

[0020] Figure 1 One of the perspective views of this utility model;

[0021] Figure 2 This is a second perspective view of the present utility model;

[0022] Figure 3 This is a partial sectional view of the present invention.

[0023] Explanation of the labels in the diagram:

[0024] 1. Conductor; 2. Insulation layer; 3. Shielding layer; 301. Copper-plated aluminum foil layer; 302. Bias-woven tin-plated copper mesh layer; 303. Iron-silicon-aluminum magnetic powder coating; 4. Buffer layer; 401. Aramid short fiber layer; 402. Silicon rubber microsphere layer; 5. Anti-torsion layer; 6. Outer sheath; 7. Bending strip; 8. Reinforcing layer; 9. Wear-resistant strip. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] To address the issues of conductor breakage and cable torsional deformation leading to breakage in the cables used in the robot body, this solution provides Example 1:

[0027] Please see Figure 1-3 In this utility model: a flexible cable for use inside a robot body includes a conductor 1, an insulating layer 2 sleeved on the conductor 1, a shielding layer 3 fixedly connected to the insulating layer 2, a stress buffer layer 4 fixedly connected to the shielding layer 3, an anti-torsion layer 5 fixedly connected to the buffer layer 4, and an outer sheath 6 fixedly connected to the anti-torsion layer 5; the stress buffer layer 4 includes an aramid short fiber layer 401, which is sleeved on and fixedly connected to the shielding layer 3, and a silicone rubber microsphere layer 402 is sleeved on the outside of the aramid short fiber layer 401, which is fixedly connected to the anti-torsion layer 5; the insulating layer 2 is an XLPE layer, and the anti-torsion layer 5 is a Kevlar fiber layer.

[0028] In this invention, conductor 1 is used to transmit current or electrical signals. Insulation layer 2 is an XLPE layer that can effectively prevent short circuits in conductor 1 and also has the advantage of high temperature resistance. Shielding layer 3 can resist electromagnetic interference. Stress buffer layer 4 adopts a double-layer composite structure. Aramid short fiber layer 401 can disperse mechanical stress, provide effective tensile strength, and inhibit the propagation of microcracks in shielding layer 3. Silicon rubber microsphere layer 402 is used to absorb vibration energy and provide radial elastic buffer, effectively preventing conductor 1 from breaking when the cable is repeatedly bent. Anti-torsion layer 5 is a Kevlar fiber layer with excellent cut resistance, which can provide ultra-high strength to the cable and effectively prevent the cable from being pulled apart. Anti-torsion layer 5 is embedded with ring-shaped anti-bending strips 7, which are shape memory alloy wires.

[0029] The anti-bending strip 7 is a shape memory alloy wire and is set inside the anti-torsion layer 5. It can effectively improve the torsional deformation capacity of the cable. At the same time, it can restore the shape of the cable under certain temperatures, thus preventing the cable from getting tangled.

[0030] To improve the electrical performance of the cable, this solution provides Example 2:

[0031] Please see Figure 3The shielding layer 3 includes a copper-plated aluminum foil layer 301, which is sleeved on and fixedly connected to the insulating layer 2. A diagonally woven tin-plated copper mesh layer 302 is sleeved on the outside of the copper-plated aluminum foil layer 301 and fixedly connected thereto. An iron-silicon-aluminum magnetic powder coating layer 303 is sleeved on the outside of the diagonally woven tin-plated copper mesh layer 302 and fixedly connected thereto. The outside of the iron-silicon-aluminum magnetic powder coating layer 303 is fixedly connected to the aramid short fiber layer 401.

[0032] In this invention, the shielding layer 3 adopts a composite three-layer structure design. The copper-plated aluminum foil layer 301 can reflect high-frequency electromagnetic interference and reduce skin effect resistance. The obliquely woven tin-plated copper mesh layer 302 can provide mechanical protection and multi-angle coverage of shielding gaps. The iron-silicon-aluminum magnetic powder coating 303 can absorb low-frequency magnetic field interference and improve cable flexibility.

[0033] Please see Figure 1 and 2 The conductor 1 is coated with a reinforcing layer 8 on its outer side. The reinforcing layer 8 is a carbon nanotube reinforcing layer.

[0034] In this invention, the reinforcing layer 8 is a carbon nanotube reinforcing layer, which can reduce the skin effect during high-frequency signal transmission, thereby improving the surface oxidation resistance of conductor 1 and improving the frequency band transmission efficiency.

[0035] Please see Figure 1 and 2 The outer sheath 6 is a polyurethane layer, and wear-resistant strips 9 are fixedly connected to the outer side of the outer sheath 6 in a ring.

[0036] In this invention, the outer sheath 6 is a polyurethane layer, which makes the cable surface oil-resistant and hydrolysis-resistant, and maintains flexibility at low temperatures. The wear-resistant strips 9 distributed on the cable surface can replace the outer sheath 6 in contact with objects, thereby reducing cable wear and extending the cable's service life.

[0037] The above are merely preferred embodiments of this utility model; however, the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and its improved concept, should be included within the scope of protection of this utility model.

Claims

1. A flexible cable for use inside a robot body, comprising a conductor (1), characterized in that: An insulating layer (2) is fitted on the conductor (1), a shielding layer (3) is fitted on the insulating layer (2) and fixedly connected thereto, a stress buffer layer (4) is fitted on the shielding layer (3) and fixedly connected thereto, an anti-torsion layer (5) is fitted on the buffer layer (4) and fixedly connected thereto, and an outer sheath (6) is fitted on the anti-torsion layer (5) and fixedly connected thereto. The stress buffer layer (4) includes an aramid short fiber layer (401), which is sleeved on the shielding layer (3) and fixedly connected to it. A silicone rubber microsphere layer (402) is sleeved on the outside of the aramid short fiber layer (401), and the outside of the silicone rubber microsphere layer (402) is fixedly connected to the anti-torsion layer (5).

2. The flexible cable for use inside a robot body according to claim 1, characterized in that: The insulating layer (2) is an XLPE layer, and the anti-torsion layer (5) is a Kevlar fiber layer.

3. The flexible cable for use inside a robot body according to claim 1, characterized in that: The shielding layer (3) includes a copper-plated aluminum foil layer (301), which is sleeved on the insulating layer (2) and fixedly connected thereto. A diagonally woven tin-plated copper mesh layer (302) is sleeved on the outside of the copper-plated aluminum foil layer (301) and fixedly connected thereto. An iron-silicon-aluminum magnetic powder coating layer (303) is sleeved on the outside of the diagonally woven tin-plated copper mesh layer (302) and fixedly connected thereto. The outside of the iron-silicon-aluminum magnetic powder coating layer (303) is fixedly connected to the aramid short fiber layer (401).

4. A flexible cable for use inside a robot body according to claim 1, characterized in that: The anti-torsion layer (5) is embedded with annularly distributed anti-bending strips (7), which are shape memory alloy wires.

5. A flexible cable for use inside a robot body according to claim 1, characterized in that: The conductor (1) is coated with a reinforcing layer (8) on its outer side, and the reinforcing layer (8) is a carbon nanotube reinforcing layer.

6. A flexible cable for use inside a robot body according to claim 1, characterized in that: The outer sheath (6) is a polyurethane layer, and wear-resistant strips (9) are fixedly connected to the outer side of the outer sheath (6) in an annular distribution.

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