A charging pile cable with an elastic stress buffering section composite structure

Abstract

This invention relates to the field of cable technology, specifically to a charging pile cable with an elastic stress buffer composite structure. The cable includes several circumferentially distributed cable cores and an insulating shielding layer wrapped around the cable cores. A support structure is also included, comprising several support frames that are fixedly connected to the outside of the insulating shielding layer and are equidistantly distributed front and back. An elastic rubber pad is fixedly connected between two adjacent support frames. Water-blocking tape is wrapped around the outside of all the support frames and the elastic rubber pads. By using the support frames to rigidly support multiple cable cores, excessive compressive force on the cable cores can be avoided, preventing damage. The elastic rubber pads between adjacent support frames can undergo a certain degree of expansion and contraction, facilitating cable bending and improving cable flexibility while ensuring cable support strength.

Description

Technical Field

[0001] This invention relates to the field of cable technology, specifically to a charging pile cable with an elastic stress buffer section composite structure. Background Technology

[0002] A cable is a device for transmitting electrical energy or signals. It is typically a rope-like cable composed of several or groups of conductors (each group containing at least two conductors) twisted together. Each group of conductors is insulated from each other and is often twisted around a central conductor. The entire cable is covered with a highly insulating outer layer. Cables are characterized by being internally energized and externally insulated. Types of cables include power cables, control cables, compensating cables, shielded cables, and high-temperature cables.

[0003] Charging cable is a key component used to connect electric vehicle charging devices to charging infrastructure and achieve power transmission. When charging electric vehicles using charging stations, the charging cable is often dragged. When dragged on the ground, the charging cable is subjected to various forces, such as tension, friction, and pressure. These forces can easily damage the cable. Existing cables generally use a buffer layer for cushioning. However, during the charging process, part of the cable will fall to the ground, making it susceptible to being stepped on or run over. Existing buffer layers are insufficient to absorb the pressure of being run over, easily leading to cable damage. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a charging pile cable with an elastic stress buffer composite structure, comprising several circumferentially distributed cable cores and an insulating shielding layer wrapped around the cable cores, and a support structure. The support structure includes several support frames that are fixedly connected to the outside of the insulating shielding layer and are equidistantly distributed front and back. An elastic rubber pad is fixedly connected between two adjacent support frames. A water-blocking tape is wrapped around the outside of the support frames and the elastic rubber pad.

[0005] An elastic buffer structure includes an inner isolation layer, an elastic component, and an outer isolation layer that are sequentially wrapped around the water-blocking tape from the inside out. Several reinforcing components are installed inside the outer isolation layer at equal intervals from front to back.

[0006] The elastic protective structure includes several annular protective components that are equidistantly installed on the outside of the outer isolation layer for supporting protection. Each annular protective component includes several arc-shaped protective plates that are uniformly installed on the outside of the outer isolation layer. Two adjacent arc-shaped protective plates are connected by a hinge. A V-shaped oblique cut is provided between two adjacent arc-shaped protective plates with the opening facing the central axis of the outer isolation layer. An elastic component and a connector are installed between two adjacent arc-shaped protective plates to push their centers to coincide. The outer surfaces of the arc-shaped protective plates are collectively covered by an outer sheath.

[0007] In one possible implementation, the support frame has a plurality of circumferentially evenly distributed through holes inside, the insulating shielding layer is installed through the corresponding through holes, the support frame and the elastic rubber pad have the same cross-section, a pull rope is fixedly connected to a plurality of the support frames and the elastic rubber pad, the pull rope is coaxial with the support frame, and the interior of the support frame and the elastic rubber pad is filled with flame retardant filler.

[0008] In one possible implementation, the elastic component one includes a plurality of elastic elements one spirally wrapped around the outside of the inner insulating layer and evenly distributed circumferentially, with a gap reserved between two adjacent elastic elements one, and a plurality of elastic elements two evenly distributed circumferentially spirally wrapped around the outside of the plurality of elastic elements one, with the gap between adjacent elastic elements one being covered by the middle portion of the elastic elements two, and both the elastic elements one and the elastic elements two being wavy.

[0009] In one possible implementation, the outer surface of the first wave crest of the elastic element is fixedly connected with sliders that are symmetrically distributed on the left and right sides, and the inner surface of the second wave crest of the elastic element is provided with a groove, and the slider is slidably installed inside the corresponding groove.

[0010] In one possible implementation, the reinforcing component includes a hollow elastic ring fixedly installed inside the outer insulating layer, the elastic ring corresponding one-to-one with the trough portion of the elastic element two, and a plurality of reinforcing ribs fixedly connected inside the elastic ring.

[0011] In one possible implementation, the front and rear ends of the arc-shaped protective plate are respectively fixedly connected with a lower buckle and an upper buckle. The upper buckle and the lower buckle are both L-shaped and arranged in opposite directions. The length of the horizontal section of the lower buckle is greater than the length of the vertical section. The lower buckle and the upper buckle of two adjacent arc-shaped protective plates are interlocked and connected.

[0012] In one possible implementation, the elastic component two consists of two arc-shaped spring pieces, one and the other, arranged opposite to each other and in an arc shape. The left and right ends of the arc-shaped spring piece one are respectively fixedly connected to the interior of two circumferentially adjacent arc-shaped protective plates. The arc-shaped spring piece one has through holes for the left and right ends of the arc-shaped spring piece two to be exposed. The left and right ends of the arc-shaped spring piece two are fixedly connected to the interior of two circumferentially adjacent arc-shaped protective plates after passing through the through holes. A baffle is stamped on the part of the arc-shaped spring piece two corresponding to the through holes. The baffle and the end of the arc-shaped spring piece two form a Y-shaped structure and are respectively clamped on the inner and outer sides of the arc-shaped spring piece one.

[0013] In one possible implementation, a connector is also installed between two circumferentially adjacent arc-shaped protective plates. The connector is dumbbell-shaped, and movable grooves are provided on opposite sides of the two circumferentially adjacent arc-shaped protective plates. The two ends of the arc-shaped protective plates are slidably installed in the corresponding movable grooves.

[0014] The beneficial effects of this invention are as follows: 1. This invention provides support and elastic buffering for the cable core through the cooperation of the support structure and the elastic protection structure. When the cable is compressed, two adjacent arc-shaped protective plates will rotate under the action of the compressive force. At this time, the elastic component two will deform and generate a rebound force. The rebound force of the elastic component two is used to buffer the external pressure and reduce the impact of the compressive force on the cable. When two adjacent arc-shaped protective plates rotate inward to a certain extent, the oblique cut will shrink until the two adjacent arc-shaped protective plates abut together, preventing the arc-shaped protective plates from continuing to rotate inward. When two adjacent arc-shaped protective plates rotate outward to a certain extent, the connecting piece pulls the two adjacent arc-shaped protective plates to prevent them from rotating outward. Thus, several arc-shaped protective plates form a relatively stable force-bearing shell, reducing the compression on the internal structure. At the same time, the support frame provides rigid support for multiple cable cores, which can prevent the cable cores from being damaged by excessive compressive force. The elastic rubber pad between two adjacent support frames can undergo a certain degree of expansion and contraction deformation, which facilitates the bending of the cable and improves the flexibility of the cable when bending while ensuring the cable support strength.

[0015] 2. When the cable is stretched or dragged, the wave-shaped elastic element one and elastic element two can undergo elastic deformation and generate a rebound force. The rebound force of elastic element one and elastic element two is used to buffer the stress generated when the cable is stretched or dragged, thereby improving the tensile strength of the cable. At the same time, the wave-shaped and spirally distributed elastic element one and elastic element two can improve the radial support of the cable. The elastic ring can supplement the radial support of elastic element one and elastic element two, further improving the cable's resistance to compression. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the cross-sectional structure of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the right half of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the support structure of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of the elastic buffer structure of the present invention.

[0020] Figure 5 This is a three-dimensional structural schematic diagram of the elastic element of the present invention.

[0021] Figure 6 This is a three-dimensional structural schematic diagram of the second elastic element of the present invention.

[0022] Figure 7 This is a partial cross-sectional view of the reinforcing component of the present invention.

[0023] Figure 8 This is a three-dimensional structural diagram of the elastic protective structure of the present invention.

[0024] Figure 9 This is a three-dimensional structural diagram of the protective plate of the present invention.

[0025] Figure 10 This is a schematic diagram of the planar structure of the second elastic component of the present invention.

[0026] Figure 11 This is a schematic diagram of the planar structure of the connector of the present invention.

[0027] In the diagram: 1. Cable core; 2. Insulation shielding layer; 3. Support structure; 31. Support frame; 32. Elastic rubber pad; 33. Pull rope; 34. Flame retardant filler; 35. Water-blocking wrapping tape; 4. Elastic buffer structure; 41. Inner isolation layer; 42. Elastic component one; 421. Elastic element one; 422. Elastic element two; 423. Slider; 424. Slide groove; 43. Outer isolation layer; 44. Reinforcing component; 441. Elastic ring; 442. Reinforcing rib; 5. Elastic protection structure; 51. Ring-shaped protection component; 511. Arc-shaped protection plate; 512. Lower connector; 513. Upper connector; 514. Movable groove; 515. Angled cut; 52. Elastic component two; 521. Arc-shaped spring piece one; 522. Arc-shaped spring piece two; 523. Baffle; 53. Connector; 54. Outer sheath. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Please see Figure 1 - Figure 11A charging pile cable with an elastic stress buffer section composite structure includes several circumferentially distributed cable cores 1 and an insulating shielding layer 2 wrapped around the cable cores 1, a support structure 3, and several support frames 31 that are fixedly connected to the outside of the insulating shielding layer 2 and are distributed at equal intervals front and back. An elastic rubber pad 32 is fixedly connected between two adjacent support frames 31. The outside of the several support frames 31 and the elastic rubber pad 32 is wrapped with a water-blocking tape 35.

[0030] The elastic buffer structure 4 includes an inner isolation layer 41, an elastic component 42, and an outer isolation layer 43, which are wrapped around the water-blocking tape 35 from the inside to the outside. Several reinforcing components 44 are installed inside the outer isolation layer 43, which are evenly distributed front and back.

[0031] The elastic protective structure 5 includes several annular protective components 51 that are equidistantly installed on the outside of the outer isolation layer 43 for supporting protection. Each annular protective component 51 includes several arc-shaped protective plates 511 that are uniformly installed on the outside of the outer isolation layer 43. Two adjacent arc-shaped protective plates 511 are connected by a hinge. A V-shaped oblique cut 515 with its opening facing the central axis of the outer isolation layer 43 is provided between two adjacent arc-shaped protective plates 511. An elastic component 52 and a connector 53 are installed between two adjacent arc-shaped protective plates 511 to push their centers to coincide. The outer sleeve 54 covers the outside of the several arc-shaped protective plates 511.

[0032] In practical use, the support frame 31 provides rigid support for multiple cable cores 1, which can prevent the cable cores 1 from being damaged due to excessive compressive force. The elastic rubber pad 32 between two adjacent support frames 31 can undergo a certain degree of expansion and contraction, which facilitates the bending of the cable. While ensuring the cable support strength, it also improves the flexibility of the cable when bending. The water-blocking tape 35 is used to wrap and connect the support frame 31 and the elastic rubber pad 32, which can improve the connection strength between the support frame 31 and the elastic rubber pad 32 and prevent the elastic rubber pad 32 from breaking.

[0033] The inner isolation layer 41 and the outer isolation layer 43 serve to isolate and fix the elastic component 42, preventing the elastic component 42 from scratching the water-blocking tape 35 or the arc-shaped protective plate 511. When the cable is squeezed or dragged, the inner isolation layer 41 and the outer isolation layer 43 can also play a certain degree of buffering role, improving the structural strength of the cable.

[0034] Several circumferentially distributed arc-shaped protective plates 511 can form a protective shell, which supports and protects the internal structure of the cable. When the cable is squeezed, two adjacent arc-shaped protective plates 511 will rotate under the action of the squeezing force. At this time, the elastic component 52 will deform and generate a rebound force. The rebound force of the elastic component 52 is used to buffer the external pressure and reduce the impact of the squeezing force on the cable. When two adjacent arc-shaped protective plates 511 rotate inward to a certain extent, the oblique cut 515 will shrink until the two adjacent arc-shaped protective plates 511 abut together, preventing the arc-shaped protective plates 511 from continuing to rotate inward. When two adjacent arc-shaped protective plates 511 rotate outward to a certain extent, the connector 53 pulls the two adjacent arc-shaped protective plates 511 to prevent them from rotating outward. Thus, several arc-shaped protective plates 511 form a relatively stable force-bearing shell, reducing the squeezing of the internal structure. The outer sheath 54 plays an isolation and protection role on the outside of the arc-shaped protective plates 511, preventing external moisture and impurities from entering the interior of the cable.

[0035] Please see Figure 1 - Figure 3 The support frame 31 has several circumferentially evenly distributed through holes inside, and the insulating shielding layer 2 is installed through the corresponding through holes. The support frame 31 and the elastic rubber pad 32 have the same cross-section. Several support frames 31 and elastic rubber pads 32 are fixedly connected by a pull rope 33. The pull rope 33 is coaxial with the support frame 31. The support frame 31 and the elastic rubber pad 32 are filled with flame-retardant filler 34.

[0036] In practical use, by fixing the cable core 1 to the inside of the support frame 31, the support frame 31 supports the cable core 1, making the cable shape more rounded and ensuring that the force on each cable core 1 is more even. By using the pull rope 33 to connect the support frame 31 and the elastic rubber pad 32, the connection strength between adjacent support frames 31 and elastic rubber pads 32 is improved, preventing the support frame 31 and elastic rubber pads 32 from breaking. The flame-retardant filler 34 can play a flame-retardant role, preventing the fire from spreading when the cable catches fire.

[0037] Please see Figure 2 and Figure 4 The elastic component 42 includes a plurality of elastic elements 421 spirally wrapped around the outside of the inner isolation layer 41 and evenly distributed in the circumference. A gap is reserved between two adjacent elastic elements 421. A plurality of elastic elements 422 are spirally wrapped around the outside of the elastic elements 421 and evenly distributed in the circumference. The gap between adjacent elastic elements 421 is covered by the middle part of the elastic elements 422. Both elastic elements 421 and elastic elements 422 are wavy.

[0038] In practical use, when the cable is stretched or dragged, the wave-shaped elastic element 1 421 and elastic element 2 422 can undergo elastic deformation and generate a rebound force. The rebound force of elastic element 1 421 and elastic element 2 422 is used to buffer the stress generated when the cable is stretched or dragged, thereby improving the tensile strength of the cable. At the same time, the wave-shaped and spirally distributed elastic element 1 421 and elastic element 2 422 can improve the radial support of the cable. The elastic ring 441 can supplement the radial support of elastic element 1 421 and elastic element 2 422, further improving the cable's resistance to compression. The gap between adjacent elastic elements 1 421 provides space for the cable to bend and stretch.

[0039] Please see Figure 4 - Figure 6 The outer surface of the first elastic element 421 is fixedly connected with sliders 423 that are symmetrically distributed on the left and right sides. The inner surface of the second elastic element 422 is provided with a groove 424, and the slider 423 is slidably installed inside the corresponding groove 424.

[0040] In practical use, the sliding cooperation of slider 423 and groove 424 limits the adjacent elastic element 1 421 and elastic element 2 422, which can improve the cooperation strength between adjacent elastic element 1 421 and elastic element 2 422, prevent elastic element 1 421 and elastic element 2 422 from loosening and separating, and facilitate the subsequent coating process.

[0041] Please see Figure 2 and Figure 7 The reinforcing component 44 includes a hollow elastic ring 441 fixedly installed inside the outer isolation layer 43. The elastic ring 441 corresponds one-to-one with the trough of the elastic element 422. Several reinforcing ribs 442 are fixedly connected inside the elastic ring 441.

[0042] In practical use, the elastic ring 441 provides support for the outer isolation layer 43, improving the cable's resistance to compression in the radial direction. At the same time, the elastic ring 441 can protect the first elastic element 421 and the second elastic element 422, reducing the radial pressure on the first elastic element 421 and the second elastic element 422, and preventing the first elastic element 421 and the second elastic element 422 from being damaged due to excessive deformation.

[0043] Please see Figure 2 , Figure 8 and Figure 9 The front and rear ends of the arc-shaped protective plate 511 are respectively fixedly connected with a lower buckle 512 and an upper buckle 513. The upper buckle 513 and the lower buckle 512 are both L-shaped and arranged in opposite directions. The length of the horizontal section of the lower buckle 512 is greater than the length of the vertical section. The lower buckle 512 and the upper buckle 513 of two adjacent arc-shaped protective plates 511 are interlocked and connected.

[0044] In practical use, the upper buckle 513 at the rear end of the front arc-shaped protective plate 511 is fastened to the lower buckle 512 at the front end of the rear arc-shaped protective plate 511. Since the length of the horizontal section of the lower buckle 512 is greater than the length of the vertical section, a gap is reserved between the mutually fastened lower buckle 512 and the upper buckle 513 for movement, which meets the needs of cable stretching and bending. By using the fastening method to connect the front and rear arc-shaped protective plates 511, the separation of the front and rear arc-shaped protective plates 511 can be avoided.

[0045] Please see Figure 2 , Figure 9 and Figure 10 The second elastic component 52 consists of two arc-shaped spring pieces, one 521 and the other 522, which are arranged opposite to each other and are in an arc shape. The left and right ends of the first arc-shaped spring piece 521 are fixedly connected to the inside of two circumferentially adjacent arc-shaped protective plates 511. The first arc-shaped spring piece 521 has through holes for the left and right ends of the second arc-shaped spring piece 522 to be exposed. The left and right ends of the second arc-shaped spring piece 522 pass through the through holes and are fixedly connected to the inside of two circumferentially adjacent arc-shaped protective plates 511. The part of the second arc-shaped spring piece 522 corresponding to the through holes is stamped with a baffle 523. The baffle 523 and the end of the second arc-shaped spring piece 522 form a Y-shaped structure and are respectively clamped on the inner and outer sides of the first arc-shaped spring piece 521.

[0046] In practical use, the relatively set arc-shaped spring piece 521 and arc-shaped spring piece 522 can generate a rebound force when the arc-shaped protective plate 511 deflects inward and outward, which facilitates the buffering of the compressive force on the cable and improves the cable's compressive strength. The baffle 523 is used to fix the arc-shaped spring piece 522 to prevent it from falling off the arc-shaped spring piece 521 and improve the firmness of the fit between the arc-shaped spring piece 521 and the arc-shaped spring piece 522.

[0047] Please see Figure 8 , Figure 9 and Figure 10 A connector 53 is installed between two adjacent circumferential arc-shaped protective plates 511. The connector 53 is dumbbell-shaped. Movable grooves 514 are provided on opposite sides of the two adjacent circumferential arc-shaped protective plates 511. The two ends of the connector 53 are slidably installed in the corresponding movable grooves 514.

[0048] In practical use, by opening oblique cuts 515 between adjacent arc-shaped protective plates 511, when the cable is subjected to pressure from top to bottom, the cable will be flattened to a certain extent. At this time, the adjacent arc-shaped protective plates 511 located on the upper and lower sides of the cable will deflect outward, making the corresponding oblique cuts 515 larger. At this time, the connectors 53 between two adjacent arc-shaped protective plates 511 will slide outward from the arc-shaped protective plates 511, and the adjacent arc-shaped protective plates 511 located on the left and right sides will deflect inward, making the oblique cuts 515 smaller. At this time, the arc-shaped spring pieces 521 and 522 between two adjacent arc-shaped protective plates 511 will deform and generate a rebound force when the arc-shaped protective plates 511 rotate. The rebound force of the arc-shaped spring pieces 521 and 522 is used to buffer the external pressure and reduce the impact of the squeezing pressure on the cable.

[0049] When two adjacent arc-shaped protective plates 511 rotate inward to a certain extent, the oblique cut 515 will shrink until the two adjacent arc-shaped protective plates 511 abut together, preventing the arc-shaped protective plates 511 from continuing to rotate inward. At the same time, when two adjacent arc-shaped protective plates 511 rotate outward to a certain extent, the connector 53 slides out to its maximum extent, preventing the arc-shaped protective plates 511 from continuing to rotate outward. At this time, several arc-shaped protective plates 511 form a relatively stable stress-bearing shell, reducing the compression on the internal structure.

[0050] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A charging pile cable with an elastic stress buffer section composite structure, comprising a plurality of circumferentially distributed cable cores (1) and an insulating shielding layer (2) wrapped around the cable cores (1), characterized in that, Also includes: The support structure (3) includes several support frames (31) that are fixedly connected to the outside of several insulating shielding layers (2) and are distributed at equal intervals in front and back. An elastic rubber pad (32) is fixedly connected between two adjacent support frames (31). A water-blocking wrapping tape (35) is wrapped around the outside of several support frames (31) and elastic rubber pads (32). The elastic buffer structure (4) includes an inner isolation layer (41), an elastic component (42) and an outer isolation layer (43) that are wrapped around the water-blocking tape (35) from the inside to the outside. The outer isolation layer (43) is equipped with a number of reinforcing components (44) that are evenly distributed front and back. The elastic protective structure (5) includes several annular protective components (51) that are equidistantly installed on the outside of the outer isolation layer (43) for supporting protection. The annular protective components (51) include several arc-shaped protective plates (511) that are uniformly installed on the outside of the outer isolation layer (43) in the circumferential direction. Two adjacent arc-shaped protective plates (511) are connected by a hinge. A V-shaped oblique cut (515) with the opening facing the central axis of the outer isolation layer (43) is opened between two adjacent arc-shaped protective plates (511). An elastic component (52) and a connector (53) are installed between two adjacent arc-shaped protective plates (511) to push the centers of the two to coincide. The outer sleeve (54) is wrapped around the outside of several arc-shaped protective plates (511). The elastic component one (42) includes a plurality of elastic elements one (421) spirally wrapped around the outside of the inner isolation layer (41) and evenly distributed in the circumference. A gap is reserved between two adjacent elastic elements one (421). A plurality of elastic elements two (422) are spirally wrapped around the outside of the plurality of elastic elements one (421) and evenly distributed in the circumference. The gap between adjacent elastic elements one (421) is covered by the part of elastic element two (422) near the middle. Both elastic elements one (421) and elastic elements two (422) are wavy. The outer surface of the first elastic element (421) is fixedly connected with sliders (423) that are symmetrically distributed on the left and right sides. The inner surface of the second elastic element (422) is provided with a groove (424). The slider (423) is slidably installed inside the corresponding groove (424).

2. The cable for a charging pile with an elastic stress buffer section composite structure according to claim 1, characterized in that: The support frame (31) has several through holes evenly distributed in the circumference inside. The insulating shielding layer (2) is installed through the corresponding through holes. The support frame (31) and the elastic rubber pad (32) have the same cross-section. A pull rope (33) is fixedly connected between several of the support frames (31) and the elastic rubber pad (32). The pull rope (33) is coaxial with the support frame (31). The support frame (31) and the elastic rubber pad (32) are filled with flame-retardant filler (34).

3. The cable for a charging pile with an elastic stress buffer section composite structure according to claim 1, characterized in that: The reinforcing component (44) includes a hollow elastic ring (441) fixedly installed inside the outer isolation layer (43). The elastic ring (441) corresponds one-to-one with the trough of the elastic element (422). Several reinforcing ribs (442) are fixedly connected inside the elastic ring (441).

4. The cable for a charging pile with an elastic stress buffer section composite structure according to claim 1, characterized in that: The front and rear ends of the arc-shaped protective plate (511) are respectively fixedly connected with a lower buckle (512) and an upper buckle (513). The upper buckle (513) and the lower buckle (512) are both L-shaped and arranged in opposite directions. The length of the horizontal section of the lower buckle (512) is greater than the length of the vertical section. The lower buckle (512) and the upper buckle (513) of two adjacent arc-shaped protective plates (511) are interlocked and connected.

5. The cable for a charging pile with an elastic stress buffer section composite structure according to claim 4, characterized in that: The second elastic component (52) is composed of two arc-shaped spring pieces, one (521) and the other (522), which are arranged opposite to each other and are in the shape of an arc. The left and right ends of the first arc-shaped spring piece (521) are fixedly connected to the inside of two circumferentially adjacent arc-shaped protective plates (511). The first arc-shaped spring piece (521) has through holes for the left and right ends of the second arc-shaped spring piece (522) to be exposed. The left and right ends of the second arc-shaped spring piece (522) are fixedly connected to the inside of two circumferentially adjacent arc-shaped protective plates (511) after passing through the through holes. The part of the second arc-shaped spring piece (522) corresponding to the through holes is stamped with a baffle (523). The baffle (523) and the end of the second arc-shaped spring piece (522) form a Y-shaped structure and are respectively clamped on the inner and outer sides of the first arc-shaped spring piece (521).

6. The cable for a charging pile with an elastic stress buffer section composite structure according to claim 5, characterized in that: A connector (53) is also installed between two circumferentially adjacent arc-shaped protective plates (511). The connector (53) is dumbbell-shaped. Movable grooves (514) are provided on the opposite sides of the two circumferentially adjacent arc-shaped protective plates (511). The two ends of the connector (53) are slidably installed in the corresponding movable grooves (514).

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