An easily stripped, low-capacitance servo cable

Abstract

This application discloses an easily peelable low-capacitance servo cable, relating to the field of cable sheath technology. It includes an outer protective sheath and an inner protective sheath, with an inner core disposed inside the inner protective sheath. The outer surface of the outer protective sheath has a linear array of toothed holes providing a basis for peeling. Utilizing the toothed holes and peel lines on the linear array of the outer protective sheath, this application allows users to quickly peel off the outer sheath simply by pulling a pull ring, significantly improving installation and maintenance efficiency. This design avoids the use of blade cutting in traditional peeling methods, reducing operational complexity and time costs. Through a combination of an arc-shaped clamp and a return spring, the inner core is securely held in the placement groove of the plastic ring. This design not only reduces the movement of the inner core when the cable bends or vibrates but also increases the clamping force through the raised structure, further ensuring the stability of signal transmission.

Description

Technical Field

[0001] This application relates to the field of cable sheath technology, and in particular to an easily peelable low-capacitance servo cable. Background Technology

[0002] Low-capacitance servo cables are high-performance cables specifically designed for servo systems. They combine low-capacitance design with the characteristics of servo cables to meet the high requirements of servo systems for signal transmission. The cables are typically made up of several or several groups of conductors, with at least two conductors in each group twisted together in a rope-like manner. Each group of conductors is insulated from each other and is often twisted around a central core. The entire cable is covered with a highly insulating outer layer.

[0003] Current cables use multiple layers to wrap the main cable and branch cables. When using the cable, for example, when it is necessary to separate the internal branch cables, the cable needs to be stripped before external connection. However, existing technology often uses blade cutting to strip the cable. During the blade cutting process, operators may accidentally cut their fingers or damage the internal structure of the cable, such as cutting through the insulation or shielding layer, which will affect the performance of the cable. Utility Model Content

[0004] To address the issue of blade cutting damaging the internal structure of cables, this application provides an easily peelable, low-capacitance servo cable.

[0005] The easily stripped, low-capacitance servo cable provided in this application adopts the following technical solution:

[0006] An easily peelable low-capacitance servo cable includes an outer protective sheath and an inner protective sheath. The inner protective sheath has an inner core inside, and the outer surface of the outer protective sheath has linearly arrayed toothed holes that provide a basis for peeling off the outer protective sheath.

[0007] By adopting the above technical solution, the outer protective sheath serves as the outermost protective layer of the cable, resisting mechanical wear and providing a physical basis for easy peeling. The inner protective sheath is an independent insulating layer that wraps around the inner core, preventing short circuits between conductors and maintaining low capacitance characteristics. The perforations are a geometric structure linearly arrayed on the surface of the outer protective sheath, with a depth of 30%-50% of the sheath thickness, forming a pre-set fracture path and significantly reducing the peeling initiation force.

[0008] Preferably, the bottom surface of the toothed hole is provided with a stripping line for cutting the toothed hole, and a pull ring is fixedly connected to one side of the stripping line.

[0009] By adopting the above technical solution, the peeling line is a high-strength polymer thread (such as aramid-PA composite yarn) pre-embedded in the bottom of the tooth hole. When subjected to tension, it precisely cuts the outer protective sleeve along the tooth hole path to achieve non-destructive peeling. The operating component, which is fixedly connected to one end of the peeling line, provides a point for manual force application to trigger the peeling action.

[0010] Preferably, the outer protective sleeve has an embedded cable sleeve that abuts against the stripping line and is used to support the outer protective sleeve, and the embedded cable sleeve has a plastic ring that provides support for the inner protective sleeve.

[0011] By adopting the above technical solution, the embedded cable sleeve is used to resist bending deformation, prevent the sheath from collapsing and isolating during stripping, and avoid interference between the stripping line and the inner core system. The plastic ring is used to provide radial support for the inner protective sheath.

[0012] Preferably, the inner circumferential array of the plastic ring has through holes, and the inner circumferential array of the plastic ring has placement grooves for placing the inner protective sleeve.

[0013] By adopting the above technical solution, the through holes are a hollow structure with a circumferential array opened in the plastic ring, which is used to release bending stress and allow the sheath to fold in an oriented manner when deformed. The placement groove is used to accurately accommodate the inner protective sheath and limit its radial displacement.

[0014] Preferably, a plurality of fixing blocks are fixedly arranged in a circular array inside the placement groove, and a rotating block is rotatably connected to the side of each fixing block away from the placement groove.

[0015] By adopting the above technical solution, the fixed block one serves as the support pivot of the rotating block one, and the rotating block one is used to convert the radial pressure of the inner core into rotational motion to buffer instantaneous impact.

[0016] Preferably, a fixed cylinder is fixedly connected to the side of the rotating block away from the fixed block, and a sliding column is slidably connected inside the fixed cylinder.

[0017] By adopting the above technical solution, the inner wall of the fixed cylinder contains a low-friction coating to guide the sliding column to move axially. The sliding column is used to convert the rotational motion of the rotating block into linear displacement and transmit the clamping force.

[0018] Preferably, a second rotating block is fixedly connected to the side of the sliding column away from the return spring, and a return spring sleeved on the outer surface of the fixed cylinder and the sliding column is fixedly connected between the opposite surfaces of the second rotating block and the first rotating block.

[0019] By adopting the above technical solution, the rotating block 2 is used to compensate for installation deviations and ensure that the clamping force is evenly distributed, and the return spring is used to keep the arc-shaped clamp plate normally clamping the inner protective sleeve.

[0020] Preferably, a fixed block is rotatably connected to the side of the rotating block two away from the sliding column, and an arc-shaped clamp that abuts against the inner protective sleeve is fixedly connected to the side of the fixed block two away from the rotating block two.

[0021] By adopting the above technical solution, the second fixing block is used to convert linear displacement into radial movement of the arc-shaped clamp. The inner surface of the arc-shaped clamp has raised texture. The raised texture is embedded in the surface of the inner protective sleeve to increase the friction coefficient. When bending, the clamping pressure is adaptively adjusted to prevent the conductor from being deformed by excessive pressure.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By utilizing the toothed holes and peel lines in the linear array of the outer protective sleeve, users can quickly peel off the outer layer simply by pulling the pull ring, which significantly improves installation and maintenance efficiency. This design avoids the use of blade cutting in traditional peeling methods, reducing operational complexity and time costs.

[0024] 2. Through the combination design of arc-shaped clamping plate and return spring, the inner core is firmly clamped in the placement groove of the plastic ring. This design not only reduces the movement of the inner core when the cable is bent or vibrated, but also increases the clamping force through the raised structure, further ensuring the stability of signal transmission. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this application;

[0026] Figure 2 This is a schematic diagram of the stripping line connection structure in this application;

[0027] Figure 3 This is a schematic diagram of the plastic ring connection structure in this application;

[0028] Figure 4 For the purposes of this application Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0029] Reference numerals: 1. Outer protective sleeve; 2. Perforated hole; 3. Peel line; 4. Pull ring;

[0030] 5. Embedded cable sleeve; 51. Plastic ring; 52. Through hole; 53. Placement groove; 54. Fixing block one; 55. Rotating block one; 56. Fixing cylinder; 57. Sliding column; 58. Return spring;

[0031] 59. Rotating block two; 510. Fixed block two; 511. Arc-shaped clamping plate;

[0032] 6. Inner protective sleeve; 61. Inner core. Detailed Implementation

[0033] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0034] This application discloses an easily strippable low-capacitance servo cable.

[0035] Reference Figure 1 , Figure 2 A strippable, low-capacitance servo cable includes an outer protective sheath 1 and an inner protective sheath 6. The outer protective sheath 1 is made of soft rubber (such as thermoplastic elastomer (TPE)). The inner protective sheath 6 contains several inner cores 61, and the inner protective sheath 6 is usually composed of several wires or groups of wires. Each group has at least two wires twisted together to form a rope-like inner core 61. Each group of inner cores 61 is insulated from each other and is often twisted around a central core. The outer surface of the outer protective sheath 1 is linearly arrayed. Several toothed holes 2 are provided to provide a basis for peeling off the outer protective sleeve 1. The depth of the toothed holes 2 is 30%-50% of the thickness of the outer protective sleeve 1, forming a pre-set fracture path and significantly reducing the peeling initiation force. The bottom surface of the inner wall of the toothed hole 2 is engaged with the peeling line 3. The peeling line 3 is a high-strength polymer thread (such as aramid-PA composite yarn) used to cut the toothed holes 2. One side of the peeling line 3 is fixedly connected to the pull ring 4. In the initial state, the pull ring 4 is located inside one of the holes in the toothed hole 2 and is not exposed to the outside.

[0036] When using the device, to peel off the outer protective sleeve 1, determine the location to be peeled off, then squeeze the corresponding location of the outer protective sleeve 1 to expose the pull ring 4. Then, pull the pull ring 4 to cut the toothed hole 2 on the outer surface of the outer protective sleeve 1, thereby completing the peeling off of the outer protective sleeve 1. Users only need to pull the pull ring 4 to quickly peel off the outer protective sleeve 1, which significantly improves installation and maintenance efficiency. This design avoids the use of blade cutting in traditional peeling methods, reducing operational complexity and time costs.

[0037] Reference Figure 3 , Figure 4The inner wall of the outer protective sleeve 1 is fixedly connected to the inner cable sleeve 5. The inner cable sleeve 5 is made of hard rubber {chloroprene rubber (CR)}, which has a certain degree of toughness and elasticity. In order to allow the cable to adapt to the shape of the cable during the laying process, the outer surface of the inner cable sleeve 5 abuts against the bottom surface of the stripping line 3, which plays a role in supporting the stripping line 3. The inner wall of the inner cable sleeve 5 is fixedly connected to the outer surface of the plastic ring 51. The plastic ring 51 is made of hard rubber, which has a certain degree of toughness and elasticity. The inner wall of the plastic ring 51 has several through holes 52 arranged in a circular array. The through holes 52 are hollow structures of the plastic ring 51, which reduce the overall weight of the cable and improve portability. The through holes 52 can also serve as heat conduction channels to help the cable dissipate heat during operation and prevent overheating. The inner circumferential array of the plastic ring 51 has several placement slots 53. The placement slots 53 are located in the inner circle of the through holes 52 in the array and are used to place the inner protective sleeve 6.

[0038] When the outer protective sleeve 1 is subjected to external pressure, the embedded cable sleeve 5, which abuts against the inner wall of the outer protective sleeve 1, can provide sufficient support for the outer protective sleeve 1 while maintaining a certain degree of toughness and elasticity. The addition of the plastic ring 51 enables the cable to adapt to the shape of the cable routing, thereby improving the flexibility of cable laying in complex environments.

[0039] Reference Figure 3 , Figure 4A plurality of fixing blocks 54 are fixedly arranged in a circular array on the inner wall of the placement groove 53. One side of the fixing block 54 is rotatably connected to the rotating block 55. The rotating block 55 is located on the side away from the placement groove 53, and the opposite surfaces of the fixing blocks 54 and the rotating block 55 are both arc-shaped to facilitate the deflection of the rotating block 55. One side of the rotating block 55 is fixedly connected to the fixed cylinder 56. The fixed cylinder 56 is located on the side away from the fixing blocks 54. The inner wall of the fixed cylinder 56 is slidably connected to the sliding column 57. A limit groove can be formed inside the fixed cylinder 56. A limit ring can be fixedly provided on the outer surface of the sliding column 57 on the side inside the fixed cylinder 56. When the sliding column 57 slides to its maximum extent, the limit ring engages with the limit groove to prevent the sliding column 57 from detaching from the fixed cylinder 56. The center of one side of the sliding column 57 is fixedly connected to the center of the rotating block 59. Located on the side away from the return spring 58, the side of rotating block 1 55 near rotating block 2 59 is fixedly connected to the return spring 58. The side of the return spring 58 away from rotating block 1 55 is fixedly connected to the side of rotating block 2 59 near rotating block 1 55. The return spring 58 is sleeved on the outer surface of the fixed cylinder 56 and the sliding column 57. One end of rotating block 2 59 is rotatably connected to the inner wall of fixed block 2 510. Fixed block 2 510 is located on the side away from the sliding column 57. The opposite surfaces of rotating block 2 59 and fixed block 2 510 are both opened into an arc shape to facilitate the deflection of rotating block 2 59. One side of fixed block 2 510 is fixedly connected to the arc-shaped clamp 511. The arc-shaped clamp 511 is located on the side away from rotating block 2 59. Several protrusions can be fixed on the inner arc surface of the arc-shaped clamp 511 and abut against the inner protective sleeve 6 to provide support for the inner protective sleeve 6.

[0040] In use, the inner protective sleeve 6 and the inner core 61 are placed together inside the placement groove 53, and the inner protective sleeve 6 is supported from multiple directions by the arc-shaped clamp 511. The combination design of the arc-shaped clamp 511 and the return spring 58 makes the inner protective sleeve 6 firmly clamped in the placement groove 53 of the plastic ring 51. This design not only reduces the movement of the inner core 61 when the cable is bent or vibrated, but also increases the clamping force through the raised structure, further ensuring the stability of signal transmission.

[0041] In this device, the return spring 58 is calculated using the alloy spring formula: F = kx, where F is the external force on the spring, k is the spring constant, N / m, and x is the spring deformation, m. The elastic force of the alloy spring is then calculated so that it can be used in this device.

[0042] During peeling, the peeling line 3 only cuts the toothed hole 2 area of ​​the outer protective sleeve 1, while the inner protective sleeve 6 is fixed throughout by the arc-shaped clamp 511 of the plastic ring 51.

[0043] The implementation principle of an easily strippable low-capacitance servo cable in this application embodiment is as follows:

[0044] In use, the inner protective sleeve 6 and the inner core 61 are placed inside the placement groove 53 as a whole, and the inner protective sleeve 6 is supported in multiple directions by the arc-shaped clamp 511. The combination design of the arc-shaped clamp 511 and the return spring 58 makes the inner protective sleeve 6 firmly clamped in the placement groove 53 of the plastic ring 51, which further ensures the stability of signal transmission.

[0045] When the outer protective sleeve 1 is squeezed by external force, the embedded cable sleeve 5, which abuts against the inner wall of the outer protective sleeve 1, can provide sufficient support for the outer protective sleeve 1 while maintaining a certain toughness and elasticity. The addition of the plastic ring 51 enables the cable to adapt to the routing shape, improving the cable's laying flexibility in complex environments.

[0046] When it is necessary to peel off the outer protective sleeve 1, determine the position to be peeled off, then squeeze the outer protective sleeve 1 at the corresponding position to expose the pull ring 4. Then, pull the pull ring 4 to cut the toothed hole 2 opened on the outer surface of the outer protective sleeve 1, thereby completing the peeling off of the outer protective sleeve 1, reducing the complexity of operation and time cost.

[0047] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An easily peelable, low-capacitance servo cable, characterized in that: It includes an outer protective sleeve (1) and an inner protective sleeve (6). The inner protective sleeve (6) has an inner core (61) inside. The outer surface of the outer protective sleeve (1) has a linear array of toothed holes (2) that provide a basis for peeling off the outer protective sleeve (1).

2. The easily peelable low-capacitance servo cable according to claim 1, characterized in that: The bottom surface of the toothed hole (2) is provided with a stripping line (3) for cutting the toothed hole (2), and a pull ring (4) is fixedly connected to one side of the stripping line (3).

3. The easily peelable low-capacitance servo cable according to claim 2, characterized in that: The outer protective sleeve (1) is internally fixedly connected to an embedded cable sleeve (5) that abuts against the stripping line (3) for supporting the outer protective sleeve (1). The embedded cable sleeve (5) is internally fixedly connected to a plastic ring (51) that provides support for the inner protective sleeve (6).

4. The easily peelable low-capacitance servo cable according to claim 3, characterized in that: The plastic ring (51) has through holes (52) in its inner circumferential array and placement grooves (53) for placing the inner protective sleeve (6) in its inner circumferential array.

5. The easily strippable low-capacitance servo cable according to claim 4, characterized in that: The placement groove (53) has a plurality of fixed blocks (54) fixed in a circular array inside, and each fixed block (54) is rotatably connected to a rotating block (55) on the side away from the placement groove (53).

6. The easily strippable low-capacitance servo cable according to claim 5, characterized in that: A fixed cylinder (56) is fixedly connected to the side of the rotating block (55) away from the fixed block (54), and a sliding column (57) is slidably connected inside the fixed cylinder (56).

7. The easily peelable low-capacitance servo cable according to claim 6, characterized in that: A rotating block two (59) is fixedly connected to the side of the sliding column (57) away from the return spring (58). A return spring (58) sleeved on the outer surface of the fixed cylinder (56) and the sliding column (57) is fixedly connected between the opposite surfaces of the rotating block two (59) and the rotating block one (55).

8. The easily strippable low-capacitance servo cable according to claim 7, characterized in that: The rotating block 2 (59) is rotatably connected to the fixed block 2 (510) on the side away from the sliding column (57), and the fixed block 2 (510) is fixedly connected to the arc-shaped clamp (511) that abuts against the inner protective sleeve (6) on the side away from the rotating block 2 (59).

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