A charging pile

Abstract

A charging pile, comprising a charging pile shell, an electric appliance part for power supply is arranged inside the charging pile shell, the electric appliance part is electrically connected with a charging gun for external power supply through a charging cable, the charging cable is arranged in the charging pile shell in a retractable manner, a wire harness retraction mechanism capable of rotating to retract the wire harness is arranged inside the charging pile shell, the wire harness retraction mechanism is sleeved outside the charging cable and is in contact with the charging cable, a protection mechanism capable of automatically adapting to the change of the diameter of the wire harness is arranged on the wire harness retraction mechanism. The wire harness can be retracted by the wire harness retraction mechanism, the structure is compact, the working efficiency is high, and the protection mechanism can automatically adapt to the change of the wire diameter caused by the change of the environmental temperature.

Description

Technical Field

[0001] This invention belongs to the field of charging pile technology and relates to a charging pile. Background Technology

[0002] Charging piles, as a form of energy replenishment equipment, have wide applications in many fields. Especially after the popularization of electric vehicles, charging piles have been deployed on a large scale. Since current charging piles are all located outdoors, their wiring harnesses often lack effective protection. To address this issue, a type of charging pile with retractable cables has been developed. However, these charging piles often use a reel to wind the wiring harness, resulting in an excessively large structure that severely encroaches on the space of internal electrical components, indicating a design flaw. Another approach involves using rollers at the cable outlet to feed the wiring harness into the device, such as the integrated wiring harness for a new energy charging pile disclosed in patent 2018214337620. The design comprises a fixed cylinder, a housing, mounting chamber 1, mounting chamber 2, rotating shaft 1, conveyor roller 1, rotating shaft 2, and conveyor roller 2. The housing is connected to the right end of the fixed cylinder. The charging cable passes through the fixed cylinder and the housing, extending to the right side of the housing. Mounting chamber 1 is located inside the left end of the housing. Rotating shaft 1 is installed inside mounting chamber 1 on the upper side of the charging cable. Conveyor roller 1 is fitted onto the annular side of rotating shaft 1, with the lower end of the annular side of conveyor roller 1 in contact with the charging cable. Rotating shaft 2 is installed inside mounting chamber 1 on the lower side of the charging cable. Conveyor roller 2 is fitted onto the annular side of rotating shaft 2, with the upper end of the annular side of conveyor roller 2 in contact with the charging cable. This design achieves the protective function of the integrated wiring harness of the charging pile. This patent uses the rotation of conveyor roller 1 and conveyor roller 2 to move and retract the charging cable to the left. However, such components only squeeze and convey the wiring harness from both sides. Over time, the wiring harness is prone to deformation due to compression. Furthermore, since the wiring harness expands or contracts with changes in ambient temperature, this winding method can easily lead to excessive pressure and damage to the cable sheath during winding because the roller position remains unchanged after the wiring harness expands. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a charging pile that is compact in structure, highly efficient in operation, and capable of automatically adapting to changes in wire diameter caused by variations in ambient temperature.

[0004] The technical solution adopted in this invention is:

[0005] A charging pile includes a charging pile housing. An electrical component for power supply is disposed inside the charging pile housing. The electrical component is electrically connected to a charging gun for external power supply via a charging cable. The charging cable is retractable within the charging pile housing. A cable retraction mechanism is disposed inside the charging pile housing, capable of rotating and retracting the cable harness. The cable retraction mechanism is fitted onto the outside of the charging cable and contacts it. The cable retraction mechanism is equipped with a protection mechanism that automatically adapts to changes in the cable harness diameter.

[0006] Furthermore, the wire harness take-up mechanism includes a mounting ring, on which several take-up wheels that can rotate synchronously and cooperate to take in the wire harness are spaced apart, and the protection mechanism is disposed on the circumferential surface of the take-up wheels.

[0007] Furthermore, a rotating ring is provided inside the mounting ring. A plurality of take-up reel drive posts for driving the take-up reel to rotate are evenly distributed in a ring on one end face of the rotating ring. The take-up reel drive posts protrude from the mounting ring. A plurality of teeth are evenly distributed in a ring on the other end face of the rotating ring. The teeth can cooperate with an external driving device to drive the rotating ring to rotate. The mounting ring has grooves on the end faces of the take-up reel drive posts and teeth.

[0008] Furthermore, a number of connecting blocks are evenly distributed and fixed on the outer ring of the mounting ring. The connecting blocks are cylindrical, and the take-up reel is rotatably fitted onto the outside of the connecting blocks.

[0009] Furthermore, the connecting block is provided with a through groove through which the take-up reel drive column passes, and a guide ring is provided in the center of the circumferential surface of the connecting block to allow the take-up reel to rotate.

[0010] Furthermore, the inner side of the take-up reel is evenly provided with inclined rifling grooves that cooperate with the take-up reel drive column to drive the take-up reel to rotate, and the inner center of the take-up reel is provided with a guide groove that cooperates with the guide ring for guidance.

[0011] Furthermore, the mounting ring is provided with a plurality of mounting seats for fixing.

[0012] Furthermore, the protection mechanism includes several compression plates, which are annularly and evenly distributed on the circumferential surface of the take-up reel, allowing for telescopic sliding. When the yarn bundle expands, the compression plates retract into the take-up reel to contact and engage with the yarn bundle, preventing the take-up reel from squeezing the yarn bundle. When the yarn bundle contracts, the compression plates extend out of the take-up reel to contact and engage with the yarn bundle, ensuring normal take-up. This allows for automatic adaptation to changes in yarn diameter caused by variations in ambient temperature.

[0013] Furthermore, a resetting compression spring is fixedly installed on the bottom walls of both sides of the compression plate, and the other end of the compression spring is fixedly connected to the slotted bottom surface of the take-up reel.

[0014] Furthermore, a symmetrically arranged trigger groove is provided on one side of the extrusion plate, and a trigger piece is provided below the trigger groove to slide outward. The lower end of the trigger piece is slidably disposed in the groove through a guide rod with a reset spring. The trigger piece is provided with trigger teeth for positioning the extrusion plate, and the trigger teeth have a structure with one side inclined and the other side horizontal.

[0015] Furthermore, an auxiliary groove is provided on the other side of the extrusion plate corresponding to the position of the trigger groove. The top surface of the auxiliary groove is higher than the top surface of the trigger groove. An auxiliary plate is slidably installed in the auxiliary groove. A stress relief block is provided on the side of the auxiliary plate facing the trigger plate. The upper end face of the stress relief block is connected to the extrusion plate by a stress relief spring. The lower side of the stress relief block can abut against the trigger teeth to position the extrusion plate.

[0016] The beneficial effects of this invention are as follows: The wire harness can be retracted through the wire harness retraction mechanism. This mechanism has a compact structure and high working efficiency. The protection mechanism can automatically adapt to changes in wire diameter caused by changes in ambient temperature, thereby avoiding problems such as wire sheath damage caused by excessive compression during the retraction process due to wire harness expansion, or insufficient compression due to wire diameter reduction, which would prevent proper retraction. Since no winding method is used, more space can be saved for internal electrical components. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a charging pile according to the present invention;

[0018] Figure 2 This is a schematic diagram of the overall structure of the wire harness retraction mechanism of the present invention;

[0019] Figure 3 yes Figure 2 The main view;

[0020] Figure 4 yes Figure 2 A schematic diagram of the structure after removing part of the protective mechanism;

[0021] Figure 5 This is a schematic diagram of the structure of the take-up reel of the present invention equipped with a protective mechanism;

[0022] Figure 6 yes Figure 5 Side view;

[0023] Figure 7 It is along Figure 6 A schematic diagram of the cross-sectional structure along the BB direction;

[0024] Figure 8 yes Figure 7 Enlarged schematic diagram of the structure at point C;

[0025] Figure 9 This is a schematic diagram of the extrusion plate of the present invention.

[0026] The components include: mounting ring-10, rotating ring-11, connecting block-12, take-up reel drive column-13, take-up reel-14, charging pile housing-15, charging cable-16, mounting base-17, rifling-18, guide groove-19, compression plate-20, guide ring-22, charging gun-23, tooth-24, trigger plate-25, auxiliary plate-26, compression spring-27, guide rod-28, unloading spring-29, unloading block-30, trigger tooth-31, trigger groove-32, and auxiliary groove-33. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments, but the invention is not limited to these specific embodiments. Those skilled in the art should recognize that the present invention covers all alternatives, improvements, and equivalents that may be included within the scope of the claims.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] Referring to 1-9, this embodiment provides a charging pile, including a charging pile housing 15. The charging pile housing 15 is equipped with electrical components for power supply. The electrical components are electrically connected to a charging gun 23 for external power supply via a charging cable 16. The charging cable 16 is retractable and arranged inside the charging pile housing 15. The charging pile housing 15 is equipped with a wire harness retraction mechanism that can rotate and retract the wire harness. The wire harness retraction mechanism is fitted onto the outside of the charging cable 16 and is in contact with it. The wire harness retraction mechanism is equipped with a protection mechanism that automatically adapts to changes in the diameter of the wire harness.

[0032] The wire harness take-up mechanism described in this embodiment includes a mounting ring 10, which is generally annular. Several take-up wheels 14, capable of synchronous rotation and engaging to take in the wire harness, are spaced apart on the mounting ring 10. The protective mechanism is disposed on the circumferential surface of the take-up wheels 14. A rotating ring 11 is disposed inside the mounting ring 10. Several take-up wheel drive posts 13, for driving the rotation of the take-up wheels 14, are evenly distributed in a ring on one end face of the rotating ring 11. The take-up wheel drive posts 13 protrude from the mounting ring 10. Several teeth 24 are evenly distributed in a ring on the other end face of the rotating ring 11. The teeth 24 can cooperate with an external drive device to drive the rotating ring 11 to rotate. Sliding grooves are provided on the end faces of the mounting ring 10 corresponding to the take-up wheel drive posts 13 and the teeth 24. Several connecting blocks 12, cylindrical in shape, are evenly distributed and fixed around the mounting ring 10. The take-up wheels 14 are rotatably fitted onto the connecting blocks 12. The connecting block 12 has a through slot through which the take-up reel drive post 13 passes. A guide ring 22 is provided at the center of the circumference of the connecting block 12, allowing the take-up reel 14 to rotate. Inclined rifling grooves 18 are evenly distributed on the inner side of the take-up reel 14, cooperating with the take-up reel drive post 13 to drive the take-up reel 14 to rotate. A guide groove 19 is provided at the center of the inner side of the take-up reel 14, cooperating with the guide ring 22 for guidance. The mounting ring 10 has several mounting seats 17 for fixing. The charging cable 16 passes through the mounting ring 10. When it is necessary to retrieve the charging cable 16, simply rotating the take-up reel 14 synchronously will allow the take-up reel 16 to be retrieved. When it is necessary to control the synchronous rotation of the take-up reel 14, an external drive device can drive the rotating ring 11 through the teeth 24 to rotate and move the take-up reel drive column 13. The movement of the take-up reel drive column 13 will cause the take-up reel 14 to rotate under the guidance of the guide groove 19 through the rifling 18.

[0033] The protective mechanism described in this embodiment includes several compression plates 20, which are annularly and evenly distributed on the circumferential surface of the take-up reel 14 and can slide telescopically. When the wire harness expands, the compression plates 20 can retract inwards into the take-up reel 14 to contact and engage with the wire harness, thus preventing the take-up reel 14 from squeezing the wire harness. When the wire harness contracts, the compression plates 20 can extend out of the take-up reel 14 to contact and engage with the wire harness, ensuring normal take-up. This allows for automatic adaptation to changes in wire diameter caused by changes in ambient temperature. Compression springs 27 are fixedly installed on the bottom walls of both sides of the compression plates 20, with the other end of each compression spring 27 fixedly connected to the slotted bottom surface of the take-up reel 14. A symmetrically arranged trigger groove 32 is provided on one side of the extrusion plate 20. Below the trigger groove 32, a trigger piece 25 is provided, which is triggered to slide outward. The lower end of the trigger piece 25 is slidably disposed in the groove via a guide rod 28 with a return spring. The trigger piece 25 is provided with trigger teeth 31 for positioning the extrusion plate 20. The trigger teeth 31 have a structure with one side inclined and the other side horizontal. On the other side of the extrusion plate 20, corresponding to the position of the trigger groove 32, an auxiliary groove 33 is provided. The top surface of the auxiliary groove 33 is higher than the top surface of the trigger groove 32. An auxiliary plate 26 is slidably installed in the auxiliary groove 33. A stress relief block 30 is provided on the side of the auxiliary plate 26 facing the trigger piece 25. The upper end of the stress relief block 30 is connected to the extrusion plate 20 via a stress relief spring 29. The lower side of the stress relief block 30 can abut against the trigger teeth 31 to position the extrusion plate 20. When the wire harness retraction mechanism rotates, the compression plate 20 will press against the outer sheath of the wire harness. At this time, the compression plate 20 will move downward against the elastic force of the relief spring 29 and the compression spring 27. When the cable thickens due to temperature changes, in order to avoid excessive pressure and damage to the sheath during wire retraction, the inclined surface of the upper end of the trigger plate 25 will contact the inclined surface of the top wall of the trigger groove 32, thereby causing the trigger plate 25 to move outward under the guidance of the guide rod 28. At this time, the relief block 30 moves to the lower side of the trigger tooth 31, thereby causing the relief spring 29 to relieve the force, thereby reducing the compression force of the compression plate 20 and ensuring the safety of the outer sheath. Thus, the compression plate 20 will automatically generate a relief behavior after the stroke increases. When the cable becomes thinner, the compression plate 20 will reset under the elastic force of the compression spring 27. At this time, the relief spring 29 will pull the relief block 30 to reset the auxiliary plate 26. During the upward movement, since the lower side of the trigger tooth 31 is an inclined surface, it will not hinder the reset process.

[0034] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. All technical contents for which protection is sought in this invention have been fully described in the claims.

Claims

1. A charging pile, comprising a charging pile housing, wherein an electrical component for power supply is disposed inside the charging pile housing, the electrical component being electrically connected to a charging gun for external power supply via a charging cable, the charging cable being retractable and disposed within the charging pile housing, characterized in that: The charging pile housing is equipped with a wire harness retraction mechanism that can rotate and retract the wire harness. The wire harness retraction mechanism is fitted onto the outside of the charging cable and is in contact with it. The wire harness retraction mechanism is equipped with a protection mechanism that automatically adapts to changes in the diameter of the wire harness. The wire harness take-up mechanism includes a mounting ring, on which several take-up wheels that can rotate synchronously and engage to take in the wire harness are spaced apart. The protective mechanism is disposed on the circumferential surface of the take-up wheels. A rotating ring is disposed inside the mounting ring. Several take-up wheel drive posts for driving the take-up wheels to rotate are evenly distributed in a ring on one end face of the rotating ring. The take-up wheel drive posts protrude from the mounting ring. Several teeth are evenly distributed in a ring on the other end face of the rotating ring. The teeth can engage with an external drive device to drive the rotating ring to rotate. The mounting ring has grooves on the end faces corresponding to the take-up wheel drive posts and teeth. The protective mechanism includes several compression plates, which are evenly distributed in a ring on the circumference of the take-up reel and can slide telescopically. Reset compression springs are fixedly installed on the bottom walls of both sides of the compression plates, with the other end of each spring fixedly connected to the slotted bottom surface of the take-up reel. Symmetrically arranged trigger slots are provided on one side of the compression plates, and a trigger plate is provided below each trigger slot, triggering it to slide outwards. The lower end of the trigger plate is slidably positioned in the slot via a guide rod with a reset spring. The trigger plate has trigger teeth for positioning the compression plates, and these trigger teeth have a structure with one side inclined and the other side horizontal. An auxiliary slot is provided on the other side of the compression plates corresponding to the trigger slots, with the top surface of the auxiliary slot higher than the top surface of the trigger slot. An auxiliary plate is slidably installed in the auxiliary slot, and a stress-relieving block is provided on the side of the auxiliary plate facing the trigger plate. The upper end of the stress-relieving block is connected to the compression plate via a stress-relieving spring, and the lower side of the stress-relieving block abuts against the trigger teeth to position the compression plate.

2. A charging pile according to claim 1, characterized in that: Several connecting blocks are evenly distributed and fixed on the outer ring of the mounting ring. The connecting blocks are cylindrical, and the take-up reel is rotatably fitted onto the outside of the connecting blocks.

3. A charging pile according to claim 2, characterized in that: The connecting block is provided with a through groove through which the take-up reel drive column passes. The center of the circumferential surface of the connecting block is provided with a guide ring that allows the take-up reel to rotate. The inner side of the take-up reel is evenly provided with inclined rifling that cooperates with the take-up reel drive column to drive the take-up reel to rotate. The center of the inner side of the take-up reel is provided with a guide groove that cooperates with the guide ring for guidance.

4. A charging pile according to claim 1, characterized in that: The mounting ring is provided with several mounting seats for fixing.

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