Torque and bend resistant cable

Abstract

This utility model relates to the field of wire and cable technology, and in particular to a torsion- and bending-resistant cable that overcomes the problem of insufficient ability of existing cables to withstand complex deformations such as tension, compression, bending, and torsion. It has a conductor and an insulating sleeve that wraps around the conductor. The conductor has an S-shaped cross-section, and the cable formed by the insulating sleeve wrapping the conductor also has an S-shaped cross-section. The cable is a spiral formed by extruding a straight S-shaped cable and then winding it around the surface of a cylindrical mold. This utility model cable is particularly suitable for robotic arms with complex movements, making the robotic arm's movements more flexible.

Description

Technical Field

[0001] This utility model relates to the field of wire and cable technology, and in particular to a torsion-resistant and bend-resistant cable. Background Technology

[0002] In a special case, the working cable needs to withstand both bending and torsional forces simultaneously. These two combined forces can exacerbate cable damage. For example, in a robotic arm, the robotic hand needs to perform a variety of complex movements. In this case, the connecting cable needs to undergo complex deformations of tension, compression, bending, and torsion. Such cables need to withstand a certain amount of tensile and compressive deformation, as well as greater bending and torsional deformation. Existing cables cannot accommodate so many deformations. Even if they are made into a spiral shape similar to that on a landline telephone handset, existing circular cables will still generate a large reaction force when the cable is twisted, which hinders the flexibility of the robotic arm. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a torsion and bending resistant cable to overcome the problem that existing cables are not strong enough to withstand complex deformations such as tension, compression, bending and torsion.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a torsion-resistant and bend-resistant cable, having a conductor and an insulating sleeve that wraps the conductor. The conductor has an S-shaped cross-section, and the cable formed by the insulating sleeve wrapping the conductor also has an S-shaped cross-section. The cable is a spiral formed by extruding a straight cable with an S-shaped cross-section and then winding it around the surface of a cylindrical mold.

[0005] Specifically, since this cable is not suitable for electric winding on a cable reel and is not a long-distance power transmission cable, the length of the cable is less than or equal to 20 meters.

[0006] Specifically, the pitch of a spiral cable is 5 to 30 times the inner diameter of the spiral. The smaller the degree of stretching and compression required, the lower the multiple should be.

[0007] Specifically, the height of S on the cross-section of the cable is greater than the width of S.

[0008] Alternatively, the height of S on the cross-section of the cable may be less than the width of S.

[0009] The beneficial effects of this utility model are: the torsion-resistant and bending-resistant cable of this utility model is especially suitable for robotic arms with complex movements. The S-shaped conductor with the same cross-sectional area is easier to twist and has less reaction force than the circular conductor. The insulating sleeve outside the conductor plays the role of insulation, buffering and dispersing deformation. Combined with the use of the spiral cable route, the cable has a strong adaptability to stretching, torsion and bending movements, which meets the power supply requirements of the robotic arm to the robotic hand, and the robotic hand moves more flexibly. Attached Figure Description

[0010] Figure 1 This is a front view of the cable of this utility model;

[0011] Figure 2 yes Figure 1 View from direction A;

[0012] Figure 3 yes Figure 1 BB cross-section.

[0013] In the diagram: 1. Conductor; 2. Insulating sleeve. Detailed Implementation

[0014] The technical solutions of the embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0015] As attached Figure 1 A type of torsion-resistant and bend-resistant cable, combined with Figure 2 The view and Figure 3 The cross-sectional view shows a conductor 1 and an insulating sleeve 2 that wraps around the conductor 1. The conductor 1 has an S-shaped cross-section, and the cable formed by wrapping the conductor 1 with the insulating sleeve 2 also has an S-shaped cross-section. The cable is a spiral formed by extruding a straight cable with an S-shaped cross-section and then winding it around the surface of a cylindrical mold. The length of the cable is less than or equal to 20 meters. The pitch L of the spiral cable is 5 to 30 times the inner diameter D of the spiral.

[0016] One structure is shown in the attached figure, where the height of S on the cable cross-section is greater than the width of S.

[0017] Another structure is that the height of S on the cable cross-section is less than the width of S, and the cable is a flat S-shape.

[0018] The manufacturing process of this utility model can be as follows: the conductor strip is first formed into a profile with an S-shaped cross section, the profile is fed into the S-shaped plastic extruder in the mold cavity to form a straight cable, the cable removed from the water cooling tank is wound around the cylindrical mold, the front end of the cable is fixed on the fixing clamp of the rotating ring, the rotating ring is set on the forward moving frame, the inner diameter D of the spiral cable is determined by the diameter of the cylindrical mold, and the pitch L is determined by the moving speed of the frame and the rotation speed of the rotating ring.

[0019] This document uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. Furthermore, those skilled in the art will recognize that, based on the ideas of this utility model, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A torsion-resistant and bending-resistant cable, having a conductor (1) and an insulating sleeve (2) that wraps the conductor (1), characterized in that: The cross-section of the conductor (1) is S-shaped, and the cross-section of the cable formed by wrapping the conductor (1) with the insulating sleeve (2) is also S-shaped. The cable is a spiral formed by winding an extruded straight cable with a cross-section of S shape around the surface of a cylindrical mold.

2. The torsion-resistant and bend-resistant cable according to claim 1, wherein: The length of the cable is less than or equal to 20 meters.

3. The torsion-resistant and bend-resistant cable according to claim 1, wherein: The pitch of the spiral cable is 5 to 30 times the inner diameter of the spiral.

4. The torsion-resistant and bend-resistant cable according to claim 1, characterized in that: The height of S in the cross-section of the cable is greater than the width of S.

5. The torsion-resistant and bend-resistant cable according to claim 1, characterized in that: The height of S in the cross-section of the cable is less than the width of S.

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