Fish scale pattern elastic cable for robot

Abstract

The utility model belongs to the technical field of cables, and discloses a fish scale pattern elastic cable for a robot, which comprises a filling core. The filling core is made of an elastic material, the outer side of the filling core is provided with a plurality of insulating control wire cores, the insulating control wire cores are spirally wound on the outer peripheral wall of the filling core, the plurality of insulating control wire cores are arranged in a staggered manner, and the outer peripheral walls of the adjacent insulating control wire cores are in contact with each other; the outer side of the filling core is provided with an outer sheath which is coaxially arranged, the outer sheath is made of an elastic material, the insulation control wire cores are all located between the outer sheath and the filling core, and the outer sheath wraps the outer sides of the insulation control wire cores in an extrusion mode; therefore, the cable has high rebound resilience, the possibility that the cable is pulled apart due to hard pulling or hard twisting during use is reduced, and the bending life of the cable can be greatly prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, and in particular relates to a fish-scale elastic cable for robots. Background Art

[0002] With the rapid development of the automation industry, sales of industrial robots in China are experiencing rapid growth. Robots can replace humans in many dangerous or repetitive tasks, saving manpower and allowing people to engage in other work. The application of robots in enterprises can improve work efficiency and create more economic value. When robots move, the twisting degree and torsion frequency of the joints are very high, which places high requirements on the temperature, bending resistance, and torsion resistance of the cables. However, in the existing technology, the conductors in the cables are mostly distributed along the cable axis, such as the Chinese patent "A Cable Sleeve and Cable" (application number CN202320560248.8). When the cable bends, the conductor cannot effectively release the stress generated by the bending, which easily leads to stress concentration in certain areas. This stress concentration can lead to excessive local stress, accelerate wear and degradation of the conductor surface, and thus shorten the bending life of the cable. Therefore, the existing technology has the problem of short bending life of the cable. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a fish-scale elastic cable for robots, which solves the problem of short bending life of the cable in the existing technology.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A fish-scale elastic cable for robots, comprising a filling core;

[0006] The filling core is made of elastic material, and multiple insulating control cores are arranged on the outside of the filling core. The insulating control cores are spirally wound on the outer peripheral wall of the filling core. The multiple insulating control cores are staggered, and the outer peripheral walls of adjacent insulating control cores are in contact with each other.

[0007] An outer sheath is provided on the outside of the filling core and is placed on the coaxial line. The outer sheath is made of elastic material. The insulating control cores are all located between the outer sheath and the filling core. The outer sheath is extruded and wrapped around the outside of each insulating control core.

[0008] The principles and effects of the above technical solution are as follows:

[0009] By spirally winding multiple insulating control cores around the outer wall of the filling core, the spiral insulating control core can release the stress generated during bending. Combined with the filling core and outer sheath made of elastic material, the cable has high resilience, reducing the possibility of the cable being torn due to hard pulling or twisting during use, and greatly improving the bending life of the cable.

[0010] The insulated control cores all include a core conductor, and the outer side of the core conductor is wrapped with a core insulation layer;

[0011] The core conductors are made of multiple steel wires twisted together;

[0012] The twisting direction of each copper wire in the core conductor is the same;

[0013] The material of the core insulation layer is fluoroplastic;

[0014] The outer sheath is made of polyurethane, and the outer wall of the outer sheath is provided with evenly distributed fish-scale textures;

[0015] The filling core is made of multiple strands of aramid yarn.

[0016] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0017] Spiral winding: It is a process used in manufacturing or assembling products, usually referring to the operation of winding a certain material in a spiral direction onto the surface of another object.

[0018] Stranding: Generally refers to the process of cross-braiding, twisting, or intertwining two or more wires (or other materials) in a rotational manner to create a stronger, more stable structure or product.

[0019] Beneficial effects of the utility model:

[0020] 1. Multiple insulating control cores are spirally wound around the outer wall of the filling core. The spiral insulating control core can relieve the stress generated during bending. Combined with the filling core and outer sheath made of elastic material, the cable has high resilience, reducing the possibility of the cable being broken due to hard pulling or twisting during use, which can greatly extend the bending life of the cable.

[0021] 2. The core conductors are made of multiple steel wires twisted together, which can improve the overall stability and mechanical strength of the core conductors, making them more able to withstand external stress and tension. At the same time, this method can also improve the flexibility and flex resistance of the core conductors;

[0022] At the same time, the steel wires in the core conductor are twisted in the same direction, which can reduce the internal resistance of the conductor, help improve the electrical conductivity and reduce energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a partial structural diagram of the core conductor of the utility model;

[0026] Figure 3 It is a schematic diagram of the structure of any insulated control wire core of the utility model. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Combined here Figures 1 to 3 An embodiment of a fish-scale elastic cable for robotics will be described. Specifically, the fish-scale elastic cable for robotics is constructed as a split structure, comprising a filling core 100, an insulating control core 200, and an outer sheath 300. Multiple insulating control cores 200 are spirally wound around the outer circumference of the filling core 100. The spiral insulating control cores 200 relieve stress generated during bending, imparting high resilience to the cable. Testing has shown that even after being stretched to 2.0 times its original length and repeated 500,000 times, its rebound rate remains below 120%. This reduces the likelihood of the cable breaking due to hard pulling or twisting during use, significantly extending the cable's bending life.

[0029] Please refer to Figures 1 to 3 , a fish-scale elastic cable for a robot, comprising a filling core 100;

[0030] The filling core 100 is made of elastic material. A plurality of insulating control cores 200 are provided on the outside of the filling core 100. The insulating control cores 200 are spirally wound on the outer peripheral wall of the filling core 100. The plurality of insulating control cores 200 are arranged in a staggered manner, and the outer peripheral walls of adjacent insulating control cores 200 are in contact with each other.

[0031] An outer sheath 300 is provided on the outside of the filling core 100 and is placed coaxially. The outer sheath 300 is made of elastic material. The insulating control cores 200 are located between the outer sheath 300 and the filling core 100. The outer sheath 300 is extruded and wrapped around the outside of each insulating control core 200.

[0032] By spirally winding multiple insulating control wire cores 200 around the outer peripheral wall of the filling core 100, the spiral insulating control wire 200 can release the stress generated during bending to a certain extent. Combined with the filling core 100 and the outer sheath 300 made of elastic material, the cable has high resilience. After testing, even if it is stretched to 2.0 times of its original length and this process is repeated 500,000 times, its rebound rate still remains at no more than 120%, reducing the possibility of the cable being broken due to hard pulling or twisting during use, which can greatly improve the bending life of the cable.

[0033] Each of the insulated control cores 200 includes a core conductor 201 , and the outer side of the core conductor 201 is wrapped with a core insulation layer 202 .

[0034] The core conductors 201 are each made of a plurality of steel wires twisted together; this can improve the overall stability and mechanical strength of the core conductors 201, making them more able to withstand external stress and tension, while also improving the flexibility and flex resistance of the core conductors 201.

[0035] The copper wires in the core conductor 201 are twisted in the same direction; the steel wires in the core conductor 201 are twisted in the same direction, which can reduce the resistance inside the conductor, help improve the electrical conductivity, and reduce energy loss.

[0036] The material of the core insulation layer 202 is fluoroplastic; fluoroplastic generally has high wear resistance, which can effectively protect the core conductor 201 from external physical damage and extend the service life; it makes the insulated control core 200 have higher mechanical strength, and the outer sheath 300 can be made thinner, reducing the outer diameter of the cable.

[0037] The material of the outer sheath 300 is polyurethane material, and the outer peripheral wall of the outer sheath 300 is provided with a uniformly distributed fish-scale texture; the polyurethane material (i.e., TPU material) has high wear resistance, and the design of the fish-scale texture can effectively increase the wear resistance of the outer sheath 300 and extend the service life of the cable. At the same time, the fish-scale texture structure can increase the surface friction, improve the anti-slip performance of the cable outer sheath 300, and help to fix and protect the cable.

[0038] The filling core 100 is made of multiple strands of aramid yarn twisted together; aramid yarn is a light but strong material. By twisting, the weight of the filling core 100 can be reduced while maintaining strength, reducing the overall weight of the cable, facilitating transportation and installation, and improving the overall strength and tensile resistance of the filling core 100, making it more able to withstand external pressure and tension.

[0039] Preferably, the copper wire in the core conductor 201 can be selected from Category 6 copper wire, and the thinner the diameter of the copper wire, the higher the softness of the core conductor 201.

[0040] Preferably, as an optional implementation, the number of the insulating control cores 200 can be set to six.

[0041] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention.

Claims

1. A fish-scale elastic cable for a robot, comprising a filling core (100), characterized in that: The filling core (100) is made of elastic material. A plurality of insulating control cores (200) are arranged on the outside of the filling core (100). The insulating control cores (200) are all spirally wound on the outer peripheral wall of the filling core (100). The plurality of insulating control cores (200) are arranged in a staggered manner, and the outer peripheral walls of adjacent insulating control cores (200) are in contact with each other. An outer sheath (300) is coaxially arranged outside the filling core (100), the outer sheath (300) is made of elastic material, the insulating control cores (200) are located between the outer sheath (300) and the filling core (100), and the outer sheath (300) is extruded and wrapped around the outer sides of each insulating control core (200).

2. The fish-scale elastic cable for robots according to claim 1, characterized in that: The insulated control cores (200) each comprise a core conductor (201), and the outer side of the core conductor (201) is wrapped with a core insulation layer (202).

3. The fish-scale elastic cable for robots according to claim 2, characterized in that: The core conductors (201) are each formed by twisting a plurality of steel wires.

4. The fish-scale elastic cable for robots according to claim 3, characterized in that: The twisting directions of the copper wires in the core conductor (201) are the same.

5. The fish-scale elastic cable for robots according to claim 2, characterized in that: The material of the wire core insulation layer (202) is fluoroplastic.

6. The fish-scale elastic cable for robots according to claim 1, characterized in that: The outer sheath (300) is made of polyurethane material, and the outer peripheral wall of the outer sheath (300) is provided with evenly distributed fish-scale textures.

7. The fish-scale elastic cable for robots according to claim 1, characterized in that: The filling core (100) is formed by twisting a plurality of aramid yarns.

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