Charging cable capable of deforming and resetting

Abstract

The invention belongs to the field of cables, and provides a deformable and resettable charging cable, which comprises a cable body and a package sheath, the center of the package sheath is provided with a cable hole for the cable body to penetrate through, the package sheath is provided with two coil spring holes, coil springs are arranged in the coil spring holes, the head end and the tail end of the package sheath are both provided with end sealing pieces, and the end sealing pieces are arranged in the cable hole. The end sealing part is used for packaging the end part of the package sheath and is used for being matched with a charging pile interface and a charging gun, a plurality of peripheral grooves which are distributed at intervals are formed in the position, close to the end sealing part at the tail end of the package sheath, of the package sheath, tension plates are arranged in the peripheral grooves, the front and back adjacent tension plates are connected through fixing bolts, and the tail ends of the fixing bolts are connected with the charging pile. The charging cable is reasonable in design and simple in structure, the connection reliability of the charging cable and the charging pile in the stretching state can be guaranteed, the normal operation of the charging process can be guaranteed, management is convenient, the utilization rate of the space near the charging pile can be increased, and the safety of charging facilities can be improved.

Description

Technical Field

[0001] The invention belongs to the field of cables and relates to a charging cable, in particular to a deformable and repositionable charging cable. Background Art

[0002] Electric vehicle charging cable is a soft cable used to connect electric vehicles to charging piles or power sockets. The cable is soft, elastic, resistant to bending, weather and friction. With the widespread popularity of new energy vehicles, a large number of charging piles and charging cables are widely used in public places to meet the charging needs of new energy vehicles.

[0003] Existing charging cables generally include a cable core, an insulating layer, a filling layer, a shielding layer, an inner sheath layer and an outer sheath layer. For example, the existing patent CN202093858U discloses an electric vehicle charging cable, which includes a plurality of cable cores and a sheath wrapped around the cable core. The cable core includes a plurality of conductive monofilaments that are bundled and twisted together, and each cable core is also covered with an insulating layer on the periphery. Generally, the charging pile gun line cable is about 5m long, and the gun head needs to be put back on the plug / clip on the charging pile after use. However, after the user charges his electric vehicle, unless a special person coils up the charging cable and places it in front of the charging pile, in most cases it is spread out on the ground, and only the gun head can be consciously put back on the charging pile by the user. In this case, the scattered charging cable can easily trip people passing by, and may even be crushed by a car that is about to reverse to the charging pile to charge, affecting the actual service life of the charging cable. Summary of the invention

[0004] In view of the technical problems existing in the above-mentioned charging cables, the present invention proposes a deformable and repositionable charging cable which has a reasonable design, is easy to manage, can improve the space utilization rate near the charging pile, and is beneficial to improving the safety of the charging facilities.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a deformable and resettable charging cable provided by the present invention comprises a cable body, wherein the cable body comprises a plurality of cable cores, an insulating layer, a shielding layer, an inner sheath and an outer sheath, and a winding sheath which is coaxially matched with the cable body and can be rolled up to form a spiral structure is arranged on the outside of the cable body, the cross section of the winding sheath is rectangular and its edges are transitioned with rounded corners, a countersunk area which is consistent with its length is arranged on each side of the winding sheath, a cable hole for passing the cable body is arranged in the center of the winding sheath, and two coil spring holes distributed on both sides of the cable hole are arranged on the winding sheath, and the winding sheath is provided with a plurality of cable cores, an insulating layer, a shielding layer, an inner sheath and an outer sheath, and the outer sheath is provided with a plurality of cable cores, an insulating layer, a shielding layer, an inner sheath and an outer sheath, and the outer sheath is provided with a plurality of cable cores, an insulating layer, a shielding layer, an inner sheath and an outer sheath, and the outer sheath is provided with a plurality of cable cores, an inner sheath and an outer sheath, and the outer sheath is provided with a plurality of cable cores, an inner sheath and an outer sheath, and the inner ... One coil spring hole is arranged near the outer spiral surface of the winding sheath, and the other coil spring hole is arranged near the inner spiral surface of the winding sheath. A coil spring is arranged in the coil spring hole to cooperate with the winding sheath. The head end and the tail end of the winding sheath are both provided with end seals, and the end seals are used to encapsulate the end of the winding sheath and to cooperate with the charging pile interface and the charging gun. The winding sheath is provided with a plurality of spaced circumferential grooves at the position of the end seal near the tail end thereof, and the circumferential grooves are distributed around the side of the winding sheath. A tension plate is arranged in the circumferential groove, and the front and rear adjacent tension plates are connected by fixing bolts, and the end of the fixing bolt is connected to the charging pile.

[0006] Preferably, the coil spring includes a main board surface, the board surface of the main board surface faces the curling center of the rolled-up sleeve, a tensioning head is provided at the top and bottom ends of the main board surface, the coil spring hole includes a straight-line segment that cooperates with the main board surface, and O-shaped segments that cooperate with the tensioning head are provided at both ends of the straight-line segment.

[0007] Preferably, the tensioning head comprises a C-shaped segment, the C-shaped segment extends from the main board surface and extends a center line segment toward the center of the C-shaped segment, and the extension distance of the center line segment toward the center of the C-shaped segment is less than the diameter of the C-shaped segment.

[0008] Preferably, the main board surface is provided with a plurality of waist-shaped holes distributed along the spiral length direction thereof, the waist-shaped holes correspond to the first positioning holes provided on the outer side of the package sheath, and the first positioning holes are connected to the waist-shaped holes by a first positioning screw.

[0009] Preferably, the end seal comprises an end cap which is nested with the outer shape of the package sleeve, the end cap is a groove-type structure, a tube sleeve is arranged at the center of the end cap, the tube sleeve is arranged with a claw cover at the end away from the end cap, and the end cap is provided with four positioning tubes distributed close to its corners on the side where it is nested with the package sleeve, the positioning tubes cooperate with the positioning blind holes arranged at the end of the package sleeve, and the positioning tubes are used to install the stop screws connecting the end cap and the package sleeve.

[0010] Preferably, the claw cover comprises a cover plate and a plurality of claw teeth arranged on the cover plate, and the cross section of the claw teeth is in a "7" shape.

[0011] Preferably, a second positioning hole is provided on the side surface of the end cover, and a second positioning screw connecting the end cover and the package sheath is provided in the second positioning hole.

[0012] Preferably, a plurality of teeth protrusions distributed in a circular array are arranged on the inner wall of the cable hole, the top circle diameter of the teeth protrusions is smaller than the diameter of the cable body, the length trajectory of the teeth protrusions is arc-shaped and both ends thereof extend to the two end surfaces of the rolled sheath.

[0013] Preferably, the coil spring is a variable diameter structure and its spiral diameter gradually decreases from bottom to top.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are:

[0015] 1. The present invention provides a deformable and repositionable charging cable. By adopting a composite form of a cable body and a winding sheath with a winding spring, the cable body can have the functions of stretching and curling. In particular, when the user finishes charging and puts the charging gun back, the charging cable can be curled under the traction of the charging gun and the curling trend of the winding sheath, and is no longer spread randomly on the ground. The design is reasonable, the structure is simple, and the management is convenient. It can improve the space utilization rate near the charging pile and is conducive to improving the safety of the charging facilities.

[0016] 2. The present invention provides a deformable and repositionable charging cable, which utilizes end seals to improve the sealing and integrity of both ends of the rolled sheath, making it easier to install the charging gun and install it on the charging pile; a tension plate and a fixing bolt are used to establish a connection with the charging pile, which can ensure the reliability of the connection between the charging cable and the charging pile in the extended state, and is conducive to ensuring the normal progress of the charging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A front view of a deformable and repositionable charging cable provided in an embodiment;

[0019] Figure 2 An axonometric diagram of a deformable and repositionable charging cable provided in an embodiment;

[0020] Figure 3 An axonometric view of a coil spring provided for an embodiment;

[0021] Figure 4 Provided for the embodiment Figure 3 A magnified schematic diagram of the structure in the middle;

[0022] Figure 5 The end face front view of the package sheath provided in the embodiment;

[0023] Figure 6 A schematic diagram of the coordination of the end seal, the tension plate and the package sheath provided in the embodiment;

[0024] Figure 7 A three-dimensional view of the end seal, the tension plate and the package sheath provided in the embodiment in another direction;

[0025] Figure 8 A perspective view of an end seal provided for an embodiment;

[0026] Fig. 9 A three-dimensional view of the end seal provided in the embodiment in another direction;

[0027] In the above figures, 1. cable body; 11. cable core; 2. rolled sheath; 21. countersunk area; 22. cable hole; 23. coil spring hole; 231. I-shaped section; 232. O-shaped section; 24. circumferential groove; 25. first positioning hole; 26. positioning blind hole; 27. tooth protrusion; 3. coil spring; 31. main board surface; 32. tensioning head; 321. C-shaped section; 322. center line section; 33. waist-shaped hole; 4. end seal; 41. end cover; 42. pipe sleeve; 43. claw cover; 431. cover plate; 432. claw teeth; 44. positioning tube; 45. second positioning hole; 5. tension plate. DETAILED DESCRIPTION

[0028] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear below, they only indicate that the upper, lower, left and right directions are consistent with the accompanying drawings themselves, and do not limit the structure.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0030] Examples, such as Figures 1 to 9 As shown, the present invention provides a deformable and repositionable charging cable, comprising a cable body 1, wherein the cable body 1 comprises a plurality of cable cores, an insulating layer, a shielding layer, an inner sheath and an outer sheath. The cable body 1 of the charging cable is an existing mature technology, and this embodiment will not be described in detail here.

[0031] In order to improve the space utilization rate of the charging cable before and after charging, the cable body 1 provided by the present invention is provided with a winding sheath 2 coaxially matched with the cable body 1 and capable of being rolled up into a spiral structure. The cross-section of the winding sheath 2 is rectangular and its edges are transitioned with rounded corners. A countersunk area 21 consistent with its length is provided on each side of the winding sheath 2. A cable hole 22 for passing the cable body 1 is provided in the center of the winding sheath 2. Two coil spring holes 23 distributed on both sides of the cable hole 22 are provided on the winding sheath 2, one of which is arranged close to the outer spiral surface of the winding sheath 2, and the other coil spring hole 23 is arranged close to the outer spiral surface of the winding sheath 2. The inner spiral surface of the sheath 2 is provided, and a coil spring 3 is provided in the coil spring hole 23 to cooperate with it. The head and tail ends of the sheath 2 are provided with end seals 4, which are used to encapsulate the end of the sheath 2 and to cooperate with the charging pile interface and the charging gun. The sheath 2 is provided with a plurality of spaced circumferential grooves 24 at the position of the end seal 4 near its tail end. The circumferential grooves 24 are distributed around the side of the sheath 2. A tension plate 5 is provided in the circumferential groove 24. The length and width of the tension plate 5 are larger than the sheath 2. The front and rear adjacent tension plates 5 are connected by fixing bolts, and the ends of the fixing bolts are connected to the charging pile. Among them, the countersunk area designed on the sheath 2 is conducive to reducing the resistance of the sheath 2 to curling, and the raised part constituting the countersunk area 21 can act as a wear-resistant block to increase the number of wear times of the sheath 2 on the ground, which is conducive to extending the actual service life of the cable.

[0032] Specifically, the present invention adopts the form of a cable body 1 and a winding sheath 2, and two winding springs 3 with inner diameter and outer diameter are installed in the winding sheath 2. Since the winding spring 3 has its own elasticity and spiral shape, the cable body 1 can have the functions of stretching and curling. Especially when the user finishes charging and puts it back to the charging gun, the charging cable can be curled under the traction of the charging gun and the curling trend of the winding sheath 2. No special reminder signs and special personnel are required for management. The charging cable is no longer spread on the ground at will. It has a reasonable design, simple structure, and is easy to manage. It can improve the space utilization near the charging pile and is conducive to improving the safety of charging facilities, especially avoiding tripping of passers-by passing by the charging pile and being crushed by charging cars.

[0033] Furthermore, the present invention provides a deformable and resettable charging cable, with end seals 4 located at both ends of the winding sheath, which are buckled on the ends of the winding sheath 2 after being passed through by the cable body 1, which can improve the sealing and integrity of both ends of the winding sheath 2, facilitate the installation of the charging gun, and facilitate the installation of the wiring terminal of the charging cable to the outlet position of the charging pile. The position of the tension plate 5 on the winding sheath 2 can be effectively limited by the circumferential groove 24, and under the connection action of the fixing bolt, all tension plates 5 establish a connection relationship with the charging pile, which can ensure that the charging cable always maintains a connection with the charging pile in the extended state, balance the tension from the coil spring 3 in the extended state, thereby ensuring the connection reliability of the charging cable at the outlet position of the charging pile, which is conducive to ensuring the normal progress of the charging process and the charging cable has a long actual service life.

[0034] In order to improve the curling performance of the charging cable, the coil spring 3 provided by the present invention includes a main board surface 31, the equilibrium state of the main board surface 31 is a spiral state, and the board surface of the main board surface 31 faces the curling center of the winding sheath 2. In this way, the main board surface 31 serves as the main working surface of the coil spring 3, and its curling elastic force can effectively act on the inner spiral surface and the outer spiral surface of the winding sheath 2, so that the winding sheath 2 has a tendency to automatically curl under the influence of its curling elastic force.

[0035] In order to improve the matching performance between the coil spring 3 and the coil spring hole 23, the present invention is provided with a tensioning head 32 at the top and bottom of the main board surface 31, and the coil spring hole 23 includes a straight-line segment 231 matching with the main board surface 31, and both ends of the straight-line segment 231 are provided with O-shaped segments 232 matching with the tensioning head 32. More specifically, the tensioning head 32 provided by the present invention includes a C-shaped segment 321, and the C-shaped segment 321 extends from the main board surface 31 and extends a center line segment 322 toward the center of the C-shaped segment 321, and the extension distance of the center line segment 322 toward the center of the C-shaped segment 321 is less than the diameter of the C-shaped segment 321. In this way, in the process of gradually pulling and inserting the coil spring 3 from the outside into the coil spring hole 23, the tensioning head 32 can produce passive compression, wherein the line segment 322 is compressed into the C-shaped segment 321, and the actual diameter of the C-shaped segment 321 is dynamically reduced until the traction force acting on the end of the coil spring 3 is removed, and the tensioning head 32 can be automatically tightened in the O-shaped segment 232 of the coil spring hole 23, thereby ensuring that the coil spring 3 and the coil spring hole 23 have good matching performance and high stability. At the same time, the tensioning head 32 is equivalent to the arched end of the coil spring 3. For the coil spring 3 with arched upper and lower ends, its tensile performance is significantly improved, the coiling capacity is fully guaranteed, and the actual service life is also relatively long.

[0036] Furthermore, the present invention provides a plurality of waist-shaped holes 33 distributed along the spiral length direction on the main board surface 31, and the waist-shaped holes correspond to the first positioning holes 25 provided on the outer surface of the winding sheath 2, and the first positioning holes 25 are connected to the waist-shaped holes 33 by the first positioning screws. By opening holes in the winding sheath 2 and the coil spring 3 and fixing them with the first positioning screws, the integrity of the coil spring 3 and the winding sheath 2 can be effectively improved, and as the charging cable is used for a long time, the cable body 1 can produce the same curling property as the winding sheath 2, and the curling property can further ensure the synchronization of the coil spring 3 and the winding sheath 2, and ensure the realization of the curling action of the charging cable.

[0037] In order to improve the protection performance of the end seal 4, the end seal 4 provided by the present invention includes an end cap 41 that is nested with the outer shape of the package sheath 2. The end cap 41 is a groove structure. A tube sleeve 42 is provided at the center of the end cap 41. The tube sleeve 42 is provided with a claw cover 43 at one end away from the end cap 41. The end cap 41 is provided with four positioning tubes 44 distributed near its corners on the side where it is nested with the package sheath 2. The positioning tubes 44 cooperate with the positioning blind holes 26 provided at the end of the package sheath 2. The positioning tubes 44 are used to install the stop screws connecting the end cap 41 and the package sheath 2. Among them, in addition to the grooved inner wall of the end seal 4 being nested with the package sheath 2 to increase the assembly friction, the positioning tubes 44 and the stop screws are also used to play the role of positioning and connection. The positioning tubes 44 can also increase the internal friction between the end seal 4 and the package sheath 2, thereby ensuring the assembly reliability of the end seal 4 and the package sheath 2. The complete end face of the end seal 4 can be blocked at the end of the winding sheath 2, which not only ensures that the cable body 1 effectively passes through the claw cover 43, the tube sleeve 42 and the end cover 41, but also ensures the matching performance between the winding sheath 2 and the connecting end of the charging gun. For example, its claw cover 43 can be directly buckled at the tail of the charging gun to ensure the connection quality between the charging cable and the charging gun.

[0038] In order to improve the practicality of the claw cover 43, the claw cover 43 provided by the present invention includes a cover plate 431 and a plurality of claw teeth 432 arranged on the cover plate 431, and the cross-section of the claw teeth 432 is in the shape of a "7". The cover plate 431 is used to dock with the tail end of the charging gun, and the claw teeth 432 are used to buckle with the mounting groove and nut connector at the tail of the charging gun to increase the separation resistance between the end seal 4 and the charging gun, and improve the integrity of the winding sheath 2, the cable body 1 and the charging gun.

[0039] In order to improve the connection reliability between the end seal 4 and the package sheath 2, a second positioning hole 45 is provided on the side of the end cover 41 provided by the present invention, and a second positioning screw connecting the end cover 41 and the package sheath 2 is provided in the second positioning hole 45. The second positioning screw is used to add positioning nodes on different mating surfaces of the end seal 4 and the package sheath 2 to further improve the connection reliability between the end seal 4 and the package sheath 2.

[0040] In order to improve the integrity of the cable body 1 and the package sheath 2, the present invention is provided with a plurality of teeth 27 distributed in a circular array on the inner wall of the cable hole 22, the tooth top circle diameter of the teeth 27 is smaller than the diameter of the cable body 1, the length trajectory of the teeth 27 is arc-shaped and its two ends extend to the two end surfaces of the package sheath 2. In this way, after the cable body 1 is pulled through the cable hole 22, the teeth 27 and the outer sheath of the cable body 1 generate a certain mutual squeezing force, and the squeezed part of the outer sheath forms a meshing relationship with the teeth 27, and the arc-shaped tooth 27 trajectory can further increase the anti-separation performance of the cable body 1 and the package sheath 2, so that the cable body 1 and the package sheath 2 have a higher degree of integrity, so that the charging cable can better serve the charging pile and have a longer actual service life.

[0041] In order to improve the space utilization rate of the charging cable, on the basis of ensuring that the gun line has a sufficient length, the coil spring 3 provided by the present invention is a variable diameter structure and its spiral diameter gradually decreases from bottom to top. The spiral diameter of the end connected to the charging gun is the smallest, but the spiral tendency is strong. After the charging gun is removed from the electric vehicle, the spiral tendency takes effect immediately. While the charging gun is pulled back to the charging pile, the cable restores the original spiral balance state and restores to its original state as much as possible, so that it has a higher space utilization rate in a static state.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A deformable and repositionable charging cable, comprising a cable body, wherein the cable body comprises a plurality of cable cores, an insulating layer, a shielding layer, an inner sheath and an outer sheath, wherein: The cable body is provided with a wrapping sheath on the outside which is coaxially matched with the cable body and can be rolled up to form a spiral structure. The cross section of the wrapping sheath is rectangular and its edges are transitioned with rounded corners. A countersunk area consistent with its length is provided on each side of the wrapping sheath. A cable hole for passing the cable body is provided in the center of the wrapping sheath. Two coiling spring holes distributed on both sides of the cable hole are provided on the wrapping sheath, one of which is provided close to the outer spiral surface of the wrapping sheath, and the other coiling spring hole is provided close to the inner spiral surface of the wrapping sheath. The coil spring hole is provided with a coil spring which is inserted therethrough, the head end and the tail end of the winding sheath are provided with end seals, the end seals are used to encapsulate the end of the winding sheath and to cooperate with the charging pile interface and the charging gun, the winding sheath is provided with a plurality of spaced circumferential grooves at a position near the end seal at its tail end, the circumferential grooves are distributed around the side of the winding sheath, a tension plate is provided in the circumferential groove, the front and rear adjacent tension plates are connected by fixing bolts, and the end of the fixing bolts is connected to the charging pile.

2. A deformable and repositionable charging cable according to claim 1, characterized in that: The coil spring includes a main board surface, the board surface of the main board surface faces the curling center of the rolled-up sheath, a tensioning head is provided at the top and bottom ends of the main board surface, the coil spring hole includes a straight-line segment that cooperates with the main board surface, and O-shaped segments that cooperate with the tensioning head are provided at both ends of the straight-line segment.

3. A deformable and repositionable charging cable according to claim 2, characterized in that: The tensioning head comprises a C-shaped segment, which extends from the main board surface and extends a center line segment toward the center of the C-shaped segment. The extension distance of the center line segment toward the center of the C-shaped segment is less than the diameter of the C-shaped segment.

4. A deformable and repositionable charging cable according to claim 3, characterized in that: The main board surface is provided with a plurality of waist-shaped holes distributed along the spiral length direction thereof, the waist-shaped holes correspond to the first positioning holes provided on the outer side of the package sheath, and the first positioning holes are connected to the waist-shaped holes by a first positioning screw.

5. The deformable and repositionable charging cable according to claim 1, characterized in that: The end seal comprises an end cap which is nested with the outer shape of the package sleeve, the end cap is a groove-type structure, a tube sleeve is arranged at the center of the end cap, a claw cover is arranged at the end of the tube sleeve away from the end cap, and four positioning tubes are arranged on the side where the end cap is nested with the package sleeve and distributed near its corner positions, the positioning tubes cooperate with the positioning blind holes arranged at the end of the package sleeve, and the positioning tubes are used to install the stop screws which connect the end cap and the package sleeve.

6. A deformable and repositionable charging cable according to claim 5, characterized in that: The claw cover comprises a cover plate and a plurality of claw teeth arranged on the cover plate, and the cross section of the claw teeth is in a "7" shape.

7. The deformable and repositionable charging cable according to claim 6, characterized in that: A second positioning hole is arranged on the side surface of the end cover, and a second positioning screw connecting the end cover and the package sheath is arranged in the second positioning hole.

8. The deformable and repositionable charging cable according to claim 1, characterized in that: The inner wall of the cable hole is provided with a plurality of teeth protrusions distributed in a circular array, the top circle diameter of the teeth protrusions is smaller than the diameter of the cable body, the length trajectory of the teeth protrusions is arc-shaped and both ends thereof extend to the two end surfaces of the winding sheath.

9. The deformable and repositionable charging cable according to claim 1, characterized in that: The coil spring is a variable diameter structure and its spiral diameter gradually decreases from bottom to top.

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