A charging pile cable for electric vehicles

Abstract

The application discloses a charging pile cable for electric vehicles and relates to the technical field of power transmission equipment.The charging pile cable comprises a cable body, a protective sleeve, a fixed air bag, a gas supply bag and a drive member.The protective sleeve is arranged on the outer circumferential side of the cable body, and the inner circumferential side wall of the protective sleeve and the outer wall of the cable body form an installation cavity.The inner wall of the circumferential side of the protective sleeve is provided with a containing groove.The fixed air bag is arranged on the outer circumferential side of the cable body and is matched with the containing groove.The gas supply bag is arranged on the outer circumferential side of the cable body and is communicated with the fixed air bag.The extrusion ring is slidably arranged on the outer circumferential side of the cable body, and the inner wall of the circumferential side of the extrusion ring is slidably connected with the gas supply bag.When the extrusion ring slides towards the fixed air bag, the fixed air bag is expanded and clamped into the containing groove.The drive member is arranged on the cable body and drives the extrusion ring to slide towards the fixed air bag.The application can reduce the possibility of directly replacing the whole cable after the outer surface layer of the cable is aged and corroded.

Description

Technical Field

[0001] This application relates to the technical field of power transmission equipment, and in particular to a charging pile cable for electric vehicles. Background Technology

[0002] Electric vehicles are vehicles powered by onboard electricity. Since they use electricity as their energy source, they are usually recharged through charging stations.

[0003] Charging piles are connected to the power grid via cables during installation, and the charging pile and charging gun are also connected via cables. For charging piles installed in open-air locations, the cables connecting the charging piles are frequently exposed to wind and sun, which accelerates the aging and corrosion of the cable's outer layer. After a certain period, the cable is prone to damage. When the cable's outer layer ages and corrodes, the wires encased within it are more susceptible to external factors, increasing the possibility of damage and leakage, thus affecting the normal operation of the charging pile. Therefore, once the cable's outer layer shows signs of aging and corrosion, the entire cable is usually replaced, which is quite wasteful. Summary of the Invention

[0004] To reduce the need to replace the entire cable due to aging and corrosion of the cable's outer layer, this application provides a charging pile cable for electric vehicles.

[0005] This application provides a charging pile cable for electric vehicles, which adopts the following technical solution: A charging cable for electric vehicles, comprising Cable body; A protective sleeve is fitted onto the outer periphery of the cable body. The inner periphery of the protective sleeve forms an installation cavity with the outer wall of the cable body. A receiving groove is provided on the inner periphery of the protective sleeve. A fixing airbag is disposed on the outer periphery of the cable body, and the fixing airbag is adapted to the receiving groove; An air supply bag is disposed on the outer periphery of the cable body, and the air supply bag is connected to the fixed air bag; A compression ring is slidably sleeved on the outer periphery of the cable body. When the inner wall of the compression ring is slidably connected to the air supply bag and slides toward the fixed air bag, the fixed air bag expands and gets stuck into the receiving groove. A driving element is disposed on the cable body, and the driving element drives the compression ring to slide toward the fixed airbag.

[0006] By adopting the above technical solution, the cable body is protected by a protective sleeve during use. When the protective sleeve ages or corrodes and needs to be replaced, it can be removed, and then the position of the compression ring can be manually restored so that the compression ring is away from the fixing airbag. When replacing, the new protective sleeve is placed on the outer periphery of the cable body, and then the compression ring is driven by the drive component to move towards the fixing airbag, so that the fixing airbag expands and is locked into the receiving groove. At this time, the protective sleeve and the cable body are connected and fixed, and the replacement of the protective sleeve is completed. The cable body does not need to be replaced at the same time, which greatly reduces the waste of resources.

[0007] Optionally, the charging pile cable includes a fixing ring, which is disposed on the cable body and located at the opening of the mounting cavity; The driving component is a driving rope, with one side connected to the compression ring and the other side connected to the fixing ring. When the driving rope is wound around the fixing ring, it pulls the compression ring to slide towards the fixing airbag.

[0008] By adopting the above technical solution, pulling the drive rope drives the compression ring to move, so that the compression ring approaches the fixed airbag and squeezes the air supply airbag, which is conducive to the expansion of the fixed airbag and its insertion into the receiving groove. Furthermore, the drive rope can be wound around the fixed ring, which is beneficial to maintaining the expansion state of the fixed airbag.

[0009] Optionally, the compression ring has a guide surface formed on the side near the fixed airbag, and the guide surface guides the air supply airbag to slide into contact with the inner wall of the compression ring.

[0010] By adopting the above technical solution, the air supply bag is guided to slide into contact with the inner wall of the compression ring, which facilitates the compression ring to compress the air supply bag.

[0011] Optionally, the air supply bladder and the fixing bladder are filled with inert gas.

[0012] By adopting the above technical solution, when the cable body burns and burns through the air supply bladder and the fixing bladder, the inert gas flows out, which can greatly limit the combustion of the cable body.

[0013] Optionally, the outer peripheral sidewall of the extrusion ring slides in contact with the inner peripheral sidewall of the protective sleeve.

[0014] By adopting the above technical solution, a cavity is formed between adjacent extrusion rings, which greatly restricts the flow of inert gas and improves the effect of inert gas in limiting the combustion of the cable body.

[0015] Optionally, the fixing rings are symmetrically arranged and located at the openings on both sides of the mounting cavity; The cable body includes A closed ring is rotatably sleeved on the outer periphery of the fixed ring, and the opposite side of the closed ring abuts against the end of the protective sleeve, and the inner periphery of the closed ring contacts the outer periphery of the fixed ring; A fixing component is used to fix the closed ring and the fixed ring together.

[0016] By adopting the above technical solution, the cavity opening is sealed with a closed ring, reducing the possibility of impurities entering the cavity and accelerating the aging and corrosion of the cable body.

[0017] Optionally, the fixing component includes a fixing block, a sliding block, a one-way tooth, and a supporting tooth; The fixing block is disposed on the inner circumference of the closed ring; A circumferentially extending groove is formed on the outer periphery of the fixed ring, and the sliding block slides in the groove; The fixing block is disposed on the inner circumference of the closed ring, the sliding block has a fixing groove extending along the axial direction of the fixing ring, and the fixing ring has a sliding groove on the side away from the mounting cavity that communicates with the sliding groove and is aligned with the fixing groove. The fixing block slides into the fixing groove through the sliding groove. The support teeth are circumferentially spaced on the sidewall of the slide groove, and the one-way teeth are located on the side of the fixing block facing the support teeth. When the fixed block is away from the sliding groove, the one-way tooth slides unidirectionally on the supporting tooth; when the fixed block is close to the sliding groove, the supporting tooth supports the one-way tooth unidirectionally.

[0018] By adopting the above technical solution, the supporting tooth supports the unidirectional tooth in one direction, restricting the reverse rotation of the closed ring. At this time, the fixing block restricts the sliding of the closed ring along the length of the cable body, which is beneficial to fixing the position of the closed ring.

[0019] Optionally, the inner peripheral sidewall of the closed ring is formed with a connecting groove along the axial direction for the fixed block to slide; The cable body includes a tension spring and a fixing screw. The tension spring is installed in the connecting groove and pulls the fixing block away from the supporting tooth. The fixing screw is threaded to the side of the closed ring away from the mounting cavity. The fixing block has a pushing surface. When the fixing screw slides on the pushing surface, it pushes the fixing block out of the connecting groove.

[0020] By adopting the above technical solution, when the fixing screw is away from the pushing surface, the tension spring pulls the fixing block into the connecting groove, so that the one-way tooth is away from the supporting tooth. At this time, the closing ring can rotate in the opposite direction, so that the fixing block can be aligned with the sliding groove, and then the fixing ring and the closing ring can be separated from each other.

[0021] Optionally, the sliding block includes a first sliding block and a second sliding block, and the drive rope is connected to the first sliding block. When the first sliding block and the second sliding block slide in opposite directions, the first sliding block and the second sliding block slide away from the sliding groove. The cable body includes The drive rope has one end connected to the fixed ring and the other end connected to a point away from the second sliding block. When the drive rope is wound around the fixed ring, the drive rope is detached from the fixed ring.

[0022] By adopting the above technical solution, the compression ring is pulled away from the fixed airbag by the power rope during use, which facilitates the separation of the protective sleeve from the cable body and reduces the difficulty of replacing the protective sleeve.

[0023] Optionally, the cable body includes A first coil spring is wound around the fixed ring, corresponding to the first sliding block. One end of the first coil spring is engaged with the first sliding block, and the other end is engaged with the fixed ring. A second coil spring, corresponding to the second sliding block and wound around the fixed ring, has one end engaged with the second sliding block and the other end engaged with the fixed ring; When the drive rope is wound around the fixed ring, the first coil spring enters the winding state, and the second coil spring enters the over-relaxed state. When the power rope is wound around the fixed ring, the second coil spring enters a relaxed state.

[0024] By adopting the above technical solution, after the relatively fixed screw moves away from the pushing surface, the first coil spring and the second coil spring can be released, so that the compression ring moves away from the fixed airbag, which greatly reduces the cumbersome operation of replacing the protective cover.

[0025] In summary, this application includes at least one of the following beneficial effects: 1. When in use, the cable body is protected by a protective sleeve. When the protective sleeve ages or corrodes, only the protective sleeve needs to be replaced, without replacing the cable body, which greatly reduces the waste of resources. 2. The air supply bladder and the fixing bladder are filled with inert gas. When the cable body burns and burns through the air supply bladder and the fixing bladder, the inert gas flows out and can limit the burning of the cable body. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the external structure of Embodiment 1 of this application; Figure 2 This is a schematic diagram of the internal cross-section of Embodiment 1 of this application; Figure 3 This is a schematic diagram of the internal structure of Embodiment 1 of this application; Figure 4 This is a schematic diagram of the internal cross-section of Embodiment 2 of this application; Figure 5 This is a schematic diagram of the external structure of Embodiment 3 of this application; Figure 6 This is a schematic diagram of the internal structure of the closed ring in Embodiment 3 of this application; Figure 7 This is a cross-sectional schematic diagram of the unidirectional tooth and the support tooth meshing in Embodiment 3 of this application; Figure 8 This is a schematic diagram of the internal structure of Embodiment 3 of this application; Figure 9 yes Figure 8 Enlarged schematic diagram of part A; Figure 10 yes Figure 8 Enlarged schematic diagram of part B.

[0027] Reference numerals: 1. Cable body; 11. Fixing airbag; 12. Air supply airbag; 13. Mounting cavity; 2. Protective sleeve; 21. Receiving groove; 3. Compression ring; 31. Drive rope; 32. Guide surface; 33. Power rope; 4. Fixing ring; 41. Sliding groove; 42. Sliding groove; 43. First fixing ring; 44. Second fixing ring; 45. Support groove; 46. Spring groove; 5. Closing ring; 51. Connecting groove; 52. Tension spring; 53. Fixing screw; 6. One-way tooth; 61. Sliding block; 611. Fixing groove; 612. First sliding block; 613. Second sliding block; 62. Fixing block; 621. Pushing surface; 63. Support tooth; 7. First spring; 8. Second spring. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0029] This application discloses a charging pile cable for electric vehicles.

[0030] Example 1 See Figure 1 The charging cable for electric vehicles includes a cable body 1, and the wires for transmitting power are located inside the cable body 1.

[0031] See Figure 2 The charging pile cable also includes a protective sleeve 2, which is fitted onto the outer periphery of the cable body 1. The length of the protective sleeve 2 is less than the length of the cable body 1, and the inner diameter of the protective sleeve 2 is less than the outer diameter of the cable body 1. When the protective sleeve 2 is fitted onto the outer periphery of the cable body 1, an installation cavity 13 is formed between the inner periphery of the protective sleeve 2 and the outer periphery of the cable body 1.

[0032] See Figure 3 The charging pile cable also includes a fixing airbag 11, an air supply airbag 12, and a compression ring 3. The fixing airbag 11 is fixed around the outer periphery of the cable body 1 in the circumferential direction. There are multiple fixing airbags 11, which are evenly spaced along the length of the cable body 1. The fixing airbag 11 can be made of soft materials such as plastic film and silicone film.

[0033] Multiple sets of air supply bags 12 are spaced apart along the length of the cable body 1. Each set of air supply bags 12 corresponds to one fixed air bag 11. There are multiple air supply bags 12 in each set, which are evenly spaced along the circumference of the cable body 1. The air supply bags 12 are fixedly connected to the cable body 1, and the air supply bags 12 are connected to the fixed air bags 11. The air supply bags 12 can be made of soft materials such as plastic film or silicone film.

[0034] The compression ring 3 is slidably sleeved on the outer periphery of the cable body 1, and the compression ring 3 corresponds one-to-one with the fixing airbag 11. The compression ring 3 forms an inclined guide surface 32 facing the fixing airbag 11. In the initial state, the airflow in the fixing airbag 11 flows into the supply airbag 12. At this time, the supply airbag 12 and the fixing airbag 11 are in a relaxed state. When the protective sleeve 2 is slidably sleeved on the outer periphery of the cable body 1, the friction between the fixing airbag 11, the supply airbag 12 and the protective sleeve 2 is reduced.

[0035] See Figure 2 and Figure 3 When the compression ring 3 slides towards the fixed airbag 11, the guide surface 32 guides the supply airbag 12, causing the inner circumference of the compression ring 3 to slide into contact with the outer wall of the supply airbag 12. At this time, the airflow in the supply airbag 12 is pushed towards the fixed airbag 11 by the compression of the compression ring 3, and the fixed airbag 11 receives the airflow from the supply airbag 12 and begins to gradually expand. The inner circumferential sidewall of the protective sleeve 2 has a circumferentially extending receiving groove 21, which corresponds one-to-one with the fixed airbag 11. The expanded fixed airbag 11 is inserted into the receiving groove 21, which can restrict the sliding of the protective sleeve 2 along the length of the cable body 1, so that the protective sleeve 2 is fixedly connected to the cable body 1. When the fixed airbag 11 and the receiving groove 21 are aligned, the protective sleeve 2 can be slightly slid. At this time, the protective sleeve 2 slides along the length of the cable body 1 until the fixed airbag 11 is inserted into the receiving groove 21, at which point the sliding of the protective sleeve 2 is restricted and stops.

[0036] The charging pile cable also includes a drive component for simultaneously driving all the compression rings 3 to slide towards the fixed airbag 11. The drive component is a drive rope 31, which extends along the cable body 1 and is fixedly connected to the compression rings 3. When the drive rope 31 is inserted, it passes between the fixed airbag 11 and the cable body 1. At this time, the drive rope 31 is restricted by the fixed airbag 11, so that the sliding direction of the drive rope 31 is along the length direction of the cable body 1. At the same time, the end of the drive rope 31 away from the compression rings 3 extends to the opening of the mounting cavity 13 on one side. When in use, pulling the drive rope 31 causes the compression rings 3 connected to the drive rope 31 to move towards the fixed airbag 11 simultaneously until the compression rings 3 move to a position adjacent to the fixed airbag 11. At this time, the fixed airbag 11 is engaged and fills the receiving groove 21.

[0037] To facilitate the fixing of the drive rope 31, a fixing ring 4 is fixedly connected to the outer periphery of the cable body 1. The fixing ring 4 is located at the opening of the mounting cavity 13 and is adapted to the end of the drive rope 31 that extends to the opening of the mounting cavity 13. When the drive rope 31 pulls the compression ring 3 toward the fixed airbag 11, the drive rope 31 slides out of the mounting cavity 13. At this time, the part of the drive rope 31 that slides out of the mounting cavity 13 can be wrapped and fixed on the fixing ring 4 to maintain the state of the compression ring 3.

[0038] The implementation principle of the electric vehicle charging pile cable in Embodiment 1 of this application is as follows: During use, the cable body 1 is protected by the protective sleeve 2. When the protective sleeve 2 ages or corrodes due to wind and sun exposure and needs to be replaced, the cable body 1 can be removed, and the protective sleeve 2 can be cut along its length to allow direct separation between the protective sleeve 2 and the cable body 1. Then, the protective sleeve 2 can be replaced without replacing the cable body 1. When replacing the new protective sleeve 2, the cable body 1 is passed through the middle of the protective sleeve 2 until the fixing ring 4 is at the opening of the mounting cavity 13. Then, the drive rope 31 is pulled and wrapped around the fixing ring 4, causing the fixing airbag 11 to expand and lock into the receiving groove 21, thus connecting and fixing the protective sleeve 2 and the cable body 1. Finally, the cable body 1 can be reconnected to the charging pile.

[0039] Example 2 See Figure 4 The difference between Embodiment 2 and Embodiment 1 is that the air supply bladder 12 and the fixing bladder 11 are filled with inert gas, such as carbon dioxide, heptafluoropropane, etc., and the outer peripheral sidewall of the compression ring 3 and the inner peripheral sidewall of the protective sleeve 2 are in sliding contact.

[0040] The cross-section of the compression ring 3 can be trapezoidal, with the shorter side of the trapezoid sliding in contact with the inner circumferential wall of the protective sleeve 2. This reduces the friction between the compression ring 3 and the protective sleeve 2 when the protective sleeve 2 is fitted onto the outer circumference of the cable body 1. Simultaneously, a protective cavity is formed between adjacent compression rings 3, and a fixing airbag 11 exists within this cavity. Therefore, when a voltage rise occurs in the cable body 1 between two adjacent compression rings 3, igniting the outer sheath of the cable body 1 and burning through the fixing airbag 11, the inert gas inside the fixing airbag 11 flows out, which can, to a certain extent, limit the flame's combustion or even extinguish it.

[0041] Example 3 See Figure 5 and Figure 6 The difference between Embodiment 3 and Embodiment 1 is that two fixing rings 4 are symmetrically arranged and located at the opening of the mounting cavity 13. The cable body 1 includes a closing ring 5, which corresponds one-to-one with the fixing rings 4 and is slidably sleeved on the outer periphery of the fixing ring 4. The inner periphery of the closing ring 5 is in sliding contact with the outer periphery of the fixing ring 4, and the opposing sides of the two opposing closing rings 5 ​​abut against the two ends of the protective sleeve 2. In use, the mounting cavity 13 is sealed by the closing rings 5 ​​to reduce the entry of impurities into the mounting cavity 13 and reduce the possibility of the cable body 1 being affected by impurities and aging faster.

[0042] The cable body 1 also includes a fixing component, and the fixing ring 4 and the closing ring 5 are fixedly connected by the fixing component.

[0043] See Figure 7 The fixing assembly includes a fixing block 62, a sliding block 61, a one-way tooth 6, and a support tooth 63. A groove 41 extending circumferentially and forming an arcuate segment is provided on the outer periphery of the fixing ring 4. The sliding block 61 slides within the groove 41 and is completely contained within it. A limiting block is fixedly connected to the side wall of the sliding block 61 away from the mounting cavity 13. A limiting groove is provided on the circumferential wall of the groove 41, allowing the limiting block to slide within it, reducing the possibility of the sliding block 61 disengaging from the groove 41.

[0044] See Figure 5 and Figure 7 The fixing ring 4 has a support groove 45 extending circumferentially, which is connected to the sliding groove 41 and is located on the side of the sliding block 61 facing away from the limiting block. The support teeth 63 are fixedly connected to the fixing ring 4 and are located in the support groove 45. There are multiple support teeth 63, which are evenly spaced circumferentially. The support teeth 63 are triangular teeth and are made of plastic, stainless steel or other materials with a certain degree of elasticity.

[0045] The fixing block 62 is located on the inner circumference of the closed ring 5, and the fixing ring 4 is away from the mounting cavity 13 (the mounting cavity 13 is in Figure 6The sliding block 61 has a sliding groove 42 that connects to the sliding groove 41 on one side, and the sliding groove 42 is located near the end of the sliding groove 41. The sliding block 61 has a fixing groove 611. When the sliding block 61 slides to abut against the side wall of the sliding groove 41 near the sliding groove 42, the fixing groove 611 is aligned with the sliding groove 42. At this time, the closing ring 5 is slidably sleeved on the outer periphery of the fixing ring 4 along the axial direction, and the fixing block 62 is slidably inserted into the fixing groove 611 through the sliding groove 42.

[0046] One-way tooth 6 is fixed to the fixing block 62 facing the mounting cavity 13 (the mounting cavity 13 is in Figure 6 On one side wall of the (marked) component, the one-way tooth 6 has a triangular tooth structure and is made of elastic plastic, stainless steel, or other materials. The one-way tooth 6 meshes with the support tooth 63. When the closed ring 5 rotates, causing the fixed block 62 to rotate away from the sliding groove 42, the one-way tooth 6 slides unidirectionally on the support tooth 63. When the closed ring 5 rotates in the opposite direction, causing the sliding block 61 to slide closer to the sliding groove 42, the support tooth 63 supports the one-way tooth 6 unidirectionally. At this time, the closed ring 5 and the fixed ring 4 are connected and fixed.

[0047] See Figure 7 and Figure 8 The drive rope 31 is slidably threaded through the fixed ring 4, and the end of the drive rope 31 away from the compression ring 3 is fixed to one of the sliding blocks 61. When the closed ring 5 rotates and drives the sliding block 61 away from the sliding groove 42, the drive rope 31 slides into the sliding groove 41 and pulls the compression ring 3 toward the fixed airbag 11.

[0048] See Figure 6 and Figure 7 To facilitate the removal of the closing ring 5 from the fixed ring 4 (the fixed ring 4 is in Figure 5 The cable body 1 is disassembled and removed from the mounting cavity 13. A connecting groove 51 extending along the inner circumference of the closed ring 5 is provided. The fixing block 62 slides radially within the connecting groove 51. The cable body 1 includes a tension spring 52 and a fixing screw 53. The tension spring 52 is located within the connecting groove 51, with one end of the tension spring 52 snapped onto the fixing block 62 and the other end snapped onto the groove wall of the connecting groove 51 away from the groove opening. During use, the tension spring 52 is released elastically, pulling the fixing block 62 away from the central axis of the closed ring 5. At this time, the one-way tooth 6 separates from the support tooth 63, allowing the closed ring 5 to rotate in the opposite direction until the fixing block 62 aligns with the sliding groove 42. Afterward, the closed ring 5 can disengage from the fixing ring 4 in a direction away from the mounting cavity 13.

[0049] See Figure 6The fixing block 62 is inclined on the side away from the central axis of the closed ring 5 to form a pushing surface 621. The fixing screw 53 is threaded to the side wall of the closed ring 5 away from the mounting cavity 13, and the fixing screw 53 slides on the pushing surface 621. When the fixing screw 53 is rotated so that the fixing screw 53 protrudes into the connecting groove 51 and slides on the pushing surface 621, the fixing screw 53 pushes the fixing block 62 to slide out of the connecting groove 51. At this time, the tension spring 52 enters an elastic tension state, which facilitates the engagement of the one-way tooth 6 and the support tooth 63. When the fixing screw 53 rotates in the opposite direction away from the pushing surface 621, the tension spring 52 is released elastically, pulling the fixing block 62 to slide into the connecting groove 51.

[0050] See Figure 6 and Figure 8 In order to facilitate the disassembly of the protective sleeve 2, the cable body 1 includes a power rope 33, which is used to pull the compression ring 3 away from the fixed airbag 11, so that the gas in the fixed airbag 11 can flow into the supply airbag 12.

[0051] See Figure 9 and Figure 10 The sliding block 61 includes a first sliding block 612 and a second sliding block 613, and the fixing ring 4 includes a first fixing ring 43 and a second fixing ring 44. The first sliding block 612 slides on the first fixing ring 43, and the drive rope 31 slides through the first fixing ring 43 and is fixed to the first sliding block 612. The second sliding block 613 slides on the second fixing ring 44. The grooves 41 of the first fixing ring 43 and the second fixing ring 44 extend in opposite directions, that is, when the first sliding block 612 and the second sliding block 613 slide away from the corresponding sliding grooves 42, the sliding directions of the first sliding block 612 and the second sliding block 613 are opposite.

[0052] The power rope 33 slides through the second fixed ring 44 and is fixedly connected to the second sliding block 613. The drive rope 31 passes through the first fixed ring 43 directly opposite the sliding groove 42, and the power rope 33 passes through the second fixed ring 44 at a position in the sliding groove 41 away from the sliding groove 42. Therefore, the compression ring 3 (the compression ring 3 in...) Figure 8 (Winning bid) Away from fixed airbag 11 (fixed airbag 11 in) Figure 8 When the winning bid is made, the drive rope 31 is not wrapped around the first fixed ring 43, while the power rope 33 is wrapped around the second fixed ring 44; when the compression ring 3 is close to the fixed airbag 11, the drive rope 31 is wrapped around the first fixed ring 43, while the power rope 33 is not wrapped around the second fixed ring 44.

[0053] See Figure 6 and Figure 8When the two closed rings 5 ​​rotate simultaneously in opposite directions, the drive rope 31 is pulled into the first fixed ring 43 by the first sliding block 612, at which point the drive rope 31 is wrapped around the first fixed ring 43; at the same time, the compression ring 3 moves toward the fixed airbag 11, and the power rope 33, driven by the second sliding block 613, moves toward the position where the power rope 33 passes through the fixed ring 4. The compression ring 3 pulls the power rope 33 to slide away from the second fixed ring 44 (the second fixed ring 44 is in Figure 10 (Winning bid).

[0054] See Figure 9 and Figure 10 The cable body 1 also includes a first coil spring 7 and a second coil spring 8. The first coil spring 7 corresponds to the first sliding block 612, and the second coil spring 8 corresponds to the second sliding block 613. The first fixing ring 43 and the second fixing block 62 each have a coil spring groove 46 extending circumferentially and communicating with the sliding groove 41. The distance between the coil spring groove 46 and the cable body 1 is less than the distance between the sliding groove 41 and the cable body 1. The first coil spring 7 is installed in the coil spring groove 46 of the first fixing ring 43, with one end of the first coil spring 7 engaged with the first sliding block 612 and the other end engaged with the first fixing ring 43. The second coil spring 8 is installed in the coil spring groove 46 of the second fixing ring 44, with one end of the second coil spring 8 engaged with the second sliding block 613 and the other end engaged with the second fixing ring 44.

[0055] When the first sliding block 612 moves away from the sliding groove 42, the first coil spring 7 enters the winding state; when the second sliding block 613 moves away from the sliding groove 42, the second coil spring 8 enters the transition relaxation state, that is, the first coil spring 7 and the second coil spring 8 are wound in opposite directions. When the first fixing ring 43 and the second fixing ring 44 are fixed by the fixing screw 53 (fixing screw 53 is in...) Figure 7 When the selected ring is removed, the first coil spring 7 and the second coil spring 8 simultaneously transition to the relaxed state. Specifically, the first coil spring 7 drives the first sliding block 612 to slide to the aligned sliding groove 42, and the second coil spring 8 drives the second sliding block 613 to slide to the aligned sliding groove 42. This facilitates the compression ring 3's return to a state away from the fixed airbag 11. At this point, the two sealing rings 5 ​​are removed (the sealing rings 5 ​​are in...). Figure 7 (Winning the bid), then you can move along the length of the cable body 1 to remove the protective sleeve 2 (protective sleeve 2 is in) Figure 6 (Winning the bid) greatly reduces the cumbersome process of replacing the protective cover 2.

[0056] 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 charging pile cable for electric vehicles, characterized in that: include Cable body (1); A protective sleeve (2) is fitted on the outer periphery of the cable body (1). The inner periphery of the protective sleeve (2) and the outer wall of the cable body (1) form an installation cavity (13). A receiving groove (21) is provided on the inner periphery of the protective sleeve (2). A fixing airbag (11) is disposed on the outer periphery of the cable body (1), and the fixing airbag (11) is adapted to the receiving groove (21); An air supply bag (12) is disposed on the outer periphery of the cable body (1), and the air supply bag (12) is connected to the fixed air bag (11); The compression ring (3) is slidably sleeved on the outer periphery of the cable body (1). When the inner wall of the compression ring (3) is slidably connected to the air supply bag (12) and slides toward the fixed air bag (11), the fixed air bag (11) expands and gets stuck in the receiving groove (21). A driving component is disposed on the cable body (1), and the driving component drives the compression ring (3) to slide toward the fixed airbag (11); The charging pile cable includes a fixing ring (4), which is disposed on the cable body (1) and located at the opening of the mounting cavity (13); The driving component is a driving rope (31). One side of the driving rope (31) is connected to the compression ring (3), and the other side is connected to the fixing ring (4). When the driving rope (31) is wound around the fixing ring (4), it pulls the compression ring (3) to slide towards the fixing airbag (11). The fixing rings (4) are symmetrically arranged and located at the two sides of the mounting cavity (13); The cable body (1) includes The closed ring (5) is rotatably sleeved on the outer periphery of the fixed ring (4), and the opposite side of the closed ring (5) abuts against the end of the protective sleeve (2), and the inner periphery of the closed ring (5) contacts the outer periphery of the fixed ring (4); The fixing component is used to fix the closed ring (5) and the fixing ring (4) in a fixed connection. The fixing component includes a fixing block (62), a sliding block (61), a one-way tooth (6), and a support tooth (63). The fixing block (62) is disposed on the inner circumference of the closed ring (5); The outer periphery of the fixed ring (4) has a circumferentially extending groove (41), and the sliding block (61) slides in the groove (41). The sliding block (61) has a fixing groove (611) extending axially along the fixing ring (4). The fixing ring (4) has a sliding groove (42) on the side away from the mounting cavity (13) that communicates with the sliding groove (41) and is aligned with the fixing groove (611). The fixing block (62) slides into the fixing groove (611) through the sliding groove (42). The support teeth (63) are spaced circumferentially on the sidewall of the slide groove (41), and the one-way teeth (6) are located on the side of the fixing block (62) facing the support teeth (63). When the fixed block (62) is away from the sliding groove (42), the one-way tooth (6) slides unidirectionally on the support tooth (63). When the fixed block (62) is close to the sliding groove (42), the support tooth (63) supports the one-way tooth (6) unidirectionally.

2. The charging pile cable for electric vehicles according to claim 1, characterized in that: The compression ring (3) has a guide surface (32) formed on the side near the fixed airbag (11), and the guide surface (32) guides the air supply bag (12) to slide into contact with the inner wall of the periphery of the compression ring (3).

3. The charging pile cable for electric vehicles according to claim 1, characterized in that: The air supply bladder (12) and the fixed air bladder (11) are filled with inert gas.

4. The charging pile cable for electric vehicles according to claim 3, characterized in that: The outer peripheral wall of the extrusion ring (3) slides in contact with the inner peripheral wall of the protective sleeve (2).

5. The charging pile cable for electric vehicles according to claim 1, characterized in that: The inner circumferential sidewall of the closed ring (5) is provided with a connecting groove (51) for the fixed block (62) to slide along the axial direction. The cable body (1) includes a tension spring (52) and a fixing screw (53). The tension spring (52) is installed in the connecting groove (51). The tension spring (52) pulls the fixing block (62) away from the support tooth (63). The fixing screw (53) is threaded to the side of the closed ring (5) away from the mounting cavity (13). The fixing block (62) has a pushing surface (621). When the fixing screw (53) slides on the pushing surface (621), it pushes the fixing block (62) out of the connecting groove (51).

6. A charging pile cable for electric vehicles according to claim 5, characterized in that: The sliding block (61) includes a first sliding block (612) and a second sliding block (613). The drive rope (31) is connected to the first sliding block (612). When it moves away from the sliding groove (42), the sliding directions of the first sliding block (612) and the second sliding block (613) are opposite. The cable body (1) includes The power rope (33) is connected at one end to the fixed ring (4) and at the other end to the second sliding block (613). When the drive rope (31) is wrapped around the fixed ring (4), the power rope (33) is detached from the fixed ring (4).

7. A charging pile cable for electric vehicles according to claim 6, characterized in that: The cable body (1) includes The first coil spring (7) is corresponding to the first sliding block (612) and is wound around the fixed ring (4). One end of the first coil spring (7) is engaged with the first sliding block (612), and the other end is engaged with the fixed ring (4). The second coil spring (8) is corresponding to the second sliding block (613) and is wound around the fixed ring (4). One end of the second coil spring (8) is engaged with the second sliding block (613), and the other end is engaged with the fixed ring (4). When the drive rope (31) is wound around the fixed ring (4), the first coil spring (7) enters the winding state, and the second coil spring (8) enters the transition relaxation state; When the power rope (33) is wound around the fixed ring (4), the first coil spring (7) enters the relaxed state, and the second coil spring (8) enters the relaxed state.

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