Wear-resistant charging pile cable
By adjusting the internal pressure of the cable during bending using airbag columns and control components, and combining the design of bumps and isolation sleeves, the problem of poor wear resistance of the insulation layer at the cable bending point is solved, thus improving the safety and reliability of the charging pile.
Patent Information
- Application Number
- CN202511503961.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-21
- Publication Date
- 2025-12-16
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When the charging station is not in use, the insulation layer at the bend of the cable is subjected to greater stress, which causes micro-cracks, affecting wear resistance and reducing charging efficiency and safety.
An airbag column and control components are used to adjust the internal pressure of the cable during bending. The bending angle is increased and the wear of the insulation sleeve is reduced by the cooperation of the squeezing column and the actuating ring. At the same time, bumps and isolation sleeves are set to further enhance wear resistance.
It improves the wear resistance of the insulation sleeve at cable bends, enhances charging safety and reliability, and reduces the wear rate of the insulation sleeve.
Smart Images
Figure CN121148799A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of cables, and in particular to a wear-resistant charging pile cable. Background Technology
[0002] Charging stations are devices that provide electrical energy to new energy vehicles such as electric vehicles and plug-in hybrid electric vehicles. They are equivalent to "gas stations" for traditional fuel vehicles. Their core function is to connect the vehicle to the power source and transmit AC or DC power to the vehicle's battery to achieve fast or slow charging.
[0003] Currently, a charging station consists of a charging pile, a charging gun, and a cable. The charging pile is installed on the ground, and both ends of the cable are electrically connected to the charging gun and the charging pile, respectively. In use, the charging gun is plugged into the vehicle's charging port, then the charging pile transmits power to the charging gun through the cable, and finally the charging gun transmits the power to the vehicle.
[0004] When a charging station is in use, the cable, as a key component connecting the station and the electric vehicle, directly affects charging efficiency and safety. However, when the charging station is not in use, the charging gun is fixed to the station. At this time, the surface insulation layer of the cable at the bending point is subjected to greater stress, leading to the formation of micro-cracks, accelerated wear, and affecting the wear resistance of the surface insulation layer at the cable bend. Summary of the Invention
[0005] To improve the wear resistance of the surface insulation layer at the bend of the cable, this application provides a wear-resistant charging pile cable.
[0006] This application provides a wear-resistant charging pile cable, which adopts the following technical solution: A wear-resistant charging pile cable, comprising a cable core; An insulating sleeve is fitted over the outer periphery of the cable core; A connecting ring is embedded and fixed to the outer periphery of the insulating sleeve. The connecting rings are symmetrically arranged and located near the end of the insulating sleeve. An airbag column is disposed inside the insulating sleeve, and there are multiple airbag columns that are evenly spaced along the circumference. A toggle ring is rotatably connected to the outer periphery of the connecting ring and coaxially arranged. The connecting ring is axially slidably connected to a squeezing column, and the squeezing column corresponds one-to-one with the airbag column. A control component is disposed on the connecting ring. When the actuating ring rotates in the forward direction, the control component controls the extrusion column to extrude the airbag column toward the side away from the connecting ring. When the actuating ring rotates in the reverse direction, the control component controls the squeezing column to release the airbag column towards the connecting ring.
[0007] By adopting the above technical solution, the cable, through the installation of airbag columns and control components, can adjust the internal pressure according to the bending condition of the cable, increasing the bending angle during bending. This causes the cable segments on both sides of the bend to move further apart, thereby reducing the rate of decrease in the wear resistance of the insulation sleeve at the bend and improving the wear resistance of the surface insulation sleeve at the bend. Compared with existing technologies, the cable of this application can effectively solve the problem of poor wear resistance of the surface insulation sleeve at the bend of the cable when the charging pile is not in use, improving the safety and reliability of charging.
[0008] Optionally, the control assembly includes a control gear ring, a control gear, a control screw, and a limiting block; The control toothed ring is disposed on the inner peripheral sidewall of the actuating ring, and the control screw is disposed on the side of the extrusion column away from the airbag column and slides on the connecting ring; The control gear is rotatably connected to the connecting ring, and the control gear meshes with the control gear ring; The control gear has a control hole in the middle, and the wall of the control hole is threadedly connected to the control screw. The limiting block is disposed inside the connecting ring, and a limiting groove is provided on the outer periphery of the extrusion column for the limiting block to slide along the axial direction.
[0009] By adopting the above technical solution, and setting up a cable core, insulating sleeve, connecting ring, airbag column, actuating ring, and control assembly, the compression and release of the airbag column can be realized. The control assembly adopts a structure of control gear ring, control gear, control screw, and limiting block. By utilizing the meshing of the control gear ring and control gear, the threaded connection of the control gear and control screw, and the cooperation of the limiting block and limiting groove, the movement of the compression column can be precisely controlled, thereby accurately realizing the compression and release operation of the airbag column when the actuating ring rotates in the forward and reverse directions.
[0010] Optionally, an extrusion plate is provided on the side of the extrusion column away from the control screw.
[0011] By adopting the above technical solution, the extrusion plate at the end of the extrusion column can increase the contact area with the airbag column, extrude the airbag column more evenly, reduce the possibility of damage to the airbag column caused by excessive local pressure, thereby better protecting the airbag column and maintaining its performance, and ensuring the wear resistance of the insulation sleeve at the cable bend.
[0012] Optionally, the connecting ring is provided with sliding teeth, which mesh with the control tooth ring; When the actuating ring rotates, the control toothed ring slides on the sliding tooth.
[0013] By adopting the above technical solution, when the actuating ring rotates, the meshing and relative sliding of the toothed ring and the sliding tooth are controlled. The sliding tooth can play a limiting role, so that the actuating ring needs a certain external force to rotate, reducing the possibility of the actuating ring rotating when not in operation.
[0014] Optionally, a limiting rope is provided inside the insulating sleeve. There are multiple limiting ropes that surround the airbag column, and the two ends of the limiting ropes are respectively connected to the connecting rings.
[0015] By adopting the above technical solution, a limiting rope is set around the airbag column and connected to the opposite connecting rings at both ends. When the airbag column is squeezed, the limiting rope can restrict the airbag column from expanding outward, further improving the wear resistance of the surface insulation sleeve at the cable bend.
[0016] Optionally, the outer periphery of the insulating sleeve is provided with multiple sets of protrusions evenly spaced along the axial direction, and each set of protrusions has multiple protrusions evenly spaced along the circumferential direction.
[0017] By adopting the above technical solution, when the cable is bent and the two sections of the cable come into contact with each other, the protrusions of the two sections of the cable can abut against each other, limiting the contact between the two sections of the cable. At the same time, when the cable is dragged on the ground, the protrusions slide on the ground, reducing the wear on the surface of the insulation sleeve.
[0018] Optionally, the protrusions in two adjacent groups are staggered.
[0019] By adopting the above technical solutions, the wear-resistant structure on the outer periphery of the cable is more evenly distributed, further improving the overall wear resistance of the outer periphery of the cable and reducing the wear of the cable surface insulation sleeve.
[0020] Optionally, the side of the protrusion away from the insulating sleeve has an arc-shaped structure.
[0021] By adopting the above technical solution, the side of the protrusion away from the insulating sleeve is set as an arc surface structure, which can reduce the frictional resistance when the cable comes into contact with external objects, reduce the degree of wear, and further improve the wear resistance of the cable.
[0022] Optionally, an isolation sleeve is provided on the outer periphery of the insulating sleeve, and the isolation sleeve has a communication opening for the protrusion of the bump.
[0023] By adopting the above technical solution, the isolation sleeve can further protect the insulation sleeve, reduce the possibility of the insulation sleeve directly contacting the outside world, reduce the friction and damage to the insulation sleeve from the outside world, and the protrusion can protrude through the connecting port without affecting the protrusion's function of improving the cable's wear resistance.
[0024] In summary, this application includes at least one of the following beneficial effects: 1. By incorporating airbag columns and control components, the internal pressure of the cable can be adjusted according to the bending condition, increasing the bending angle and causing the cable segments on both sides of the bend to move further apart. This reduces the rate of decrease in the wear resistance of the insulation sleeve at the bend and improves the wear resistance of the surface insulation sleeve at the bend. 2. When the cable is bent and the two sections of the cable come into contact with each other, the protrusions on the two sections of the cable can abut against each other, limiting the contact between the two sections of the cable. At the same time, when the cable is dragged on the ground, the protrusions slide on the ground, reducing the wear on the surface of the insulation sleeve. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the external structure of an embodiment of this application; Figure 2 This is a schematic diagram of the internal cross-section of an embodiment of this application; Figure 3 yes Figure 2 Enlarged schematic diagram of part A; Figure 4 yes Figure 2 Enlarged schematic diagram of part B; Figure 5 This is a schematic diagram of the internal cross-section of the connecting ring in an embodiment of this application.
[0026] Reference numerals: 1. Cable core; 2. Insulating sleeve; 21. Restricting rope; 22. Protrusion; 23. Isolating sleeve; 24. Connecting port; 3. Connecting ring; 31. Extrusion column; 311. Restricting groove; 312. Extrusion plate; 32. Sliding tooth; 33. Connecting groove; 34. Mounting hole; 4. Airbag column; 5. Actuating ring; 6. Control assembly; 61. Control tooth ring; 62. Control gear; 621. Control hole; 63. Control screw; 64. Restricting block. Detailed Implementation
[0027] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0028] This application discloses a wear-resistant charging pile cable.
[0029] See Figure 1This application provides a wear-resistant charging pile cable, comprising a cable core 1 and an insulating sleeve 2. The cable core 1 is the core component for transmitting electrical energy. The cable core 1 can be made of a metal with good conductivity, such as copper or aluminum, and its structure is generally composed of multiple strands of fine wires twisted together. This structure increases the cable's flexibility and conductivity. In some special cases, an alloy cable core 1 can also be used to meet higher conductivity or other special requirements. The insulating sleeve 2 is fitted around the outer periphery of the cable core 1, serving to protect the cable core 1 and provide insulation. The insulating sleeve 2 is usually made of insulating materials such as rubber or plastic, and is soft and elastic. The inner wall of the insulating sleeve 2 is tightly fitted to the cable core 1 to ensure good insulation. In addition to common rubber and plastic, insulating materials with special properties, such as high-temperature and high-voltage resistant insulating materials, can also be used to adapt to different usage environments.
[0030] See Figure 2 and Figure 3 The cable also includes a connecting ring 3 and an airbag column 4. Two circumferentially extending connecting grooves 33 are provided on the outer periphery of the insulating sleeve 2, symmetrically arranged, located near the ends of the insulating sleeve 2. The connecting ring 3 is fixedly installed within the connecting groove 33, thus embedding and fixing the connecting ring 3 to the outer periphery of the insulating sleeve 2, and the connecting ring 3 and the insulating sleeve 2 are coaxially arranged. The connecting ring 3 is generally made of metal or rigid plastic, possessing a certain strength and stability. The outer diameter of the connecting ring 3 is equal to the outer diameter of the insulating sleeve 2, and it is fixed to the insulating sleeve 2 by embedding to ensure a firm connection. In some cases, glue or other fixing methods can also be used to fix the connecting ring 3 and the insulating sleeve 2 together.
[0031] See Figure 3 and Figure 4 An insulating sleeve 2 has mounting holes 34 extending along its length. The two openings of the mounting holes 34 are connected to the connecting grooves 33 on both sides. Multiple mounting holes 34 are evenly spaced circumferentially; in this application, four mounting holes 34 are used. Multiple airbag columns 4 are slidably installed within the mounting holes 34, each corresponding to one of the mounting holes 34. Each airbag column 4 is filled with gas and possesses a certain degree of elasticity. The airbag columns 4 can be made of elastic materials such as rubber or silicone, and are generally cylindrical in shape. In this embodiment, the gas can be carbon dioxide. When the cable burns, the flame burns through the airbag column 4, at which point carbon dioxide is released, limiting further combustion. In other embodiments, other gases can also be used.
[0032] The cable also includes an actuating ring 5 and a control component 6. A circumferentially extending actuating groove is formed on the outer periphery of the connecting ring 3. The actuating ring 5 is rotatably connected within the actuating groove and is coaxially arranged with the connecting ring 3. The outer diameter of the actuating ring 5 is larger than that of the connecting ring 3. The actuating ring 5 can be made of materials such as plastic or metal, and its outer periphery can also be provided with anti-slip textures to facilitate rotation by the operator. A compression post 31 is slidably connected to the connecting ring 3 along its axial direction. The compression post 31 protrudes outside the connecting ring 3 and slides within the mounting hole 34. The compression post 31 corresponds one-to-one with the airbag post 4. The compression post 31 is generally made of metal or hard plastic. One end of it is connected to the actuating ring 5 via the control component 6, and the other end is used to compress the airbag post 4. The sliding of the compression post 31 is achieved through the control component 6. When the actuating ring 5 rotates, the control component 6 drives the compression post 31 to slide axially. The shape of the compression post 31 can be designed according to actual needs, such as cylindrical or square.
[0033] The control component 6 is located on the connecting ring 3. By rotating the toggle ring 5 in both directions, the control component 6 can control the squeezing column 31 to squeeze or release the airbag column 4, thereby adjusting the internal pressure of the cable, reducing the stress on the surface insulation sleeve 2 at the cable bend, and improving wear resistance. This is because when the cable bends, adjusting the degree of squeezing of the airbag column 4 by the squeezing column 31 can change the internal pressure distribution of the cable. At this time, the airbag column 4, in the process of resisting the internal air pressure, causes the insulation sleeve 2 to spread out in the opposite direction at the bend, increasing the bending angle of the insulation sleeve 2, thereby reducing the stress on the insulation sleeve 2 and slowing down the rate of decrease in wear resistance.
[0034] The control assembly 6 includes a control gear ring 61, a control gear 62, a control screw 63, and a limiting block 64. The control gear ring 61 is fixedly connected to the inner circumferential sidewall of the actuating ring 5. The control screw 63 is fixedly connected to the side of the extrusion column 31 away from the airbag column 4, and is slidably connected within the connecting ring 3. The control gear 62 is rotatably connected within the connecting ring 3, and meshes with the control gear ring 61. A control hole 621 is formed in the middle of the control gear 62, and the wall of the control hole 621 is threadedly connected to the thread on the outer circumferential sidewall of the control screw 63. The limiting block 64 is fixedly connected within the connecting ring 3. A limiting groove 311 is formed on the outer circumferential side of the extrusion column 31, extending along the length of the extrusion column 31. The limiting block 64 slides axially within the limiting groove 311 along the extrusion column 31. When the actuating ring 5 rotates in the forward direction, the control gear ring 61 drives the control gear 62 to rotate. The control gear 62, through a threaded connection, drives the control screw 63 and the compression pin 31 to move away from the connecting ring 3, thereby compressing the airbag pin 4. When the actuating ring 5 rotates in the reverse direction, the control gear ring 61 drives the control gear 62 to rotate in the reverse direction. The control gear 62, through a threaded connection, drives the control screw 63 and the compression pin 31 to move towards the connecting ring 3, thereby releasing the airbag pin 4. This control method can precisely control the degree of compression of the airbag pin 4 by the compression pin 31, thereby achieving the adjustment of the pressure of the airbag pin 4 inside the cable.
[0035] In addition, an extrusion plate 312 is provided on the side of the extrusion column 31 away from the control screw 63. The extrusion plate 312 can increase the contact area between the extrusion column 31 and the airbag column 4, making the extrusion more uniform and reducing the possibility of damage to the airbag column 4 due to excessive local pressure. The extrusion plate 312 is generally made of materials such as metal or plastic, and its shape can be designed according to the shape of the airbag column 4, such as round or square.
[0036] See Figure 4 and Figure 5 The connecting ring 3 is fixedly connected to a sliding tooth 32, which meshes with the control tooth ring 61. When the actuating ring 5 rotates, the control tooth ring 61 slides on the sliding tooth 32. The sliding tooth 32 acts as a limit, requiring a certain external force to rotate the actuating ring 5, thus reducing the possibility of rotation when the actuating ring 5 is not in operation. The sliding tooth 32 is generally made of a material with elastic deformation, such as metal, rubber, or plastic, and its shape can be designed according to the shape of the control tooth ring 61, such as triangular or trapezoidal.
[0037] See Figure 3 and Figure 4The insulating sleeve 2 contains multiple sets of limiting ropes 21, each set corresponding to one airbag column 4. Each set of limiting ropes 21 has multiple ropes, evenly spaced circumferentially around the airbag column 4. The two ends of each limiting rope 21 are fixedly connected to the opposing sides of two opposing connecting rings 3. When the airbag column 4 is compressed, the limiting ropes 21 prevent it from expanding outwards. The limiting ropes 21 are generally made of high-strength fiber materials, such as steel wire rope.
[0038] Multiple sets of protrusions 22 are evenly spaced along the axial direction on the outer periphery of the insulating sleeve 2. Each set of protrusions 22 consists of multiple protrusions 22 evenly spaced circumferentially. Adjacent sets of protrusions 22 are staggered, and the side of the protrusions 22 away from the insulating sleeve 2 has an arc-shaped structure. The protrusions 22 can increase the wear resistance of the insulating sleeve 2. When the cable is bent to the point where two sections of the cable abut each other, the protrusions 22 on the two sections of the cable can abut against each other, limiting the abutment between the two sections of the cable. At the same time, when the cable is dragged on the ground, the protrusions 22 slide on the ground, reducing the wear on the surface of the insulating sleeve 2. The protrusions 22 are generally made of materials such as rubber or plastic, and their shape can be designed according to actual needs, such as circular or square. In the embodiment of this application, the protrusions 22 are hemispherical block structures.
[0039] An isolation sleeve 23 is fitted around the outer periphery of the insulating sleeve 2. The isolation sleeve 23 has a connecting opening 24, which corresponds one-to-one with a protrusion 22. The protrusion 22 passes through the connecting opening 24 and protrudes outside the isolation sleeve 23. The isolation sleeve 23 further protects the insulating sleeve 2, reducing the possibility of damage from external objects. It also restricts the outward expansion of the insulating sleeve 2. The isolation sleeve 23 is generally made of braided rope, which is soft and has a certain degree of toughness. The isolation sleeve 23 and the insulating sleeve 2 can be fixed together with glue or other methods to ensure a strong connection.
[0040] The implementation principle of a wear-resistant charging pile cable in this application embodiment is as follows: The wear-resistant charging cable of this embodiment, by incorporating an airbag column 4 and a control component 6, can adjust the internal pressure according to the cable's bending condition, increasing the bending angle during bending and thus reducing the rate of decrease in the wear resistance of the insulation sleeve 2 at the bend. Simultaneously, the protrusion 22 and the isolation sleeve 23 further enhance the cable's wear resistance and protective performance. Compared to existing technologies, the cable of this embodiment effectively solves the problem of poor wear resistance of the insulation sleeve 2 at the cable bend when the charging pile is not in use, improving the safety and reliability of charging, and possessing strong practicality and innovation.
[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A wear-resistant charging pile cable, characterized in that: Including cable core (1); An insulating sleeve (2) is fitted onto the outer periphery of the cable core (1); A connecting ring (3) is embedded and fixed on the outer periphery of the insulating sleeve (2). The connecting rings (3) are symmetrically arranged and located near the end of the insulating sleeve (2). Airbag columns (4) are disposed inside the insulating sleeve (2), and there are multiple airbag columns (4) that are evenly spaced along the circumference; A toggle ring (5) is rotatably connected to the outer periphery of the connecting ring (3) and coaxially arranged. The connecting ring (3) is axially slidably connected to a squeezing column (31), and the squeezing column (31) corresponds one-to-one with the airbag column (4). The control component (6) is located on the connecting ring (3). When the actuating ring (5) rotates in the forward direction, the control component (6) controls the squeezing column (31) to squeeze the airbag column (4) toward the side away from the connecting ring (3). When the actuating ring (5) rotates in the opposite direction, the control component (6) controls the squeezing column (31) to release the airbag column (4) in the direction of the connecting ring (3).
2. The wear-resistant charging pile cable according to claim 1, characterized in that: The control component (6) includes a control gear ring (61), a control gear (62), a control screw (63), and a limiting block (64). The control toothed ring (61) is disposed on the inner circumferential side wall of the actuating ring (5), and the control screw (63) is disposed on the side of the extrusion column (31) away from the airbag column (4) and slides on the connecting ring (3). The control gear (62) is rotatably connected to the connecting ring (3), and the control gear (62) meshes with the control gear ring (61); The control gear (62) has a control hole (621) in the middle, and the wall of the control hole (621) is threadedly connected to the control screw (63); The limiting block (64) is disposed inside the connecting ring (3), and the outer periphery of the extrusion column (31) is provided with a limiting groove (311) for the limiting block (64) to slide along the axial direction.
3. The wear-resistant charging pile cable according to claim 2, characterized in that: An extrusion plate (312) is provided on the side of the extrusion column (31) away from the control screw (63).
4. The wear-resistant charging pile cable according to claim 3, characterized in that: The connecting ring (3) is provided with sliding teeth (32), which mesh with the control tooth ring (61); When the actuating ring (5) rotates, the control toothed ring (61) slides on the sliding tooth (32).
5. The wear-resistant charging pile cable according to claim 4, characterized in that: The insulating sleeve (2) is provided with a limiting rope (21), there are multiple limiting ropes (21) and they surround the airbag column (4), and the two ends of the limiting rope (21) are respectively connected to the connecting ring (3).
6. The wear-resistant charging pile cable according to claim 1, characterized in that: The insulating sleeve (2) has multiple sets of protrusions (22) evenly spaced along the axial direction on its outer periphery. Each set of protrusions (22) has multiple protrusions and is evenly spaced along the circumferential direction.
7. The wear-resistant charging pile cable according to claim 6, characterized in that: The protrusions (22) in two adjacent groups are staggered.
8. The wear-resistant charging pile cable according to claim 7, characterized in that: The side of the protrusion (22) away from the insulating sleeve (2) has an arc-shaped structure.
9. The wear-resistant charging pile cable according to claim 8, characterized in that: An isolation sleeve (23) is provided on the outer periphery of the insulating sleeve (2), and a communication port (24) is provided on the isolation sleeve (23) for the protrusion (22) to protrude.