A charging station equipped with a cable winding mechanism

Abstract

This invention relates to the field of charging pile technology, specifically to a charging pile equipped with a cable winding mechanism. The mechanism includes a central shaft rotatably connected to a fixed ring, which is fixedly mounted on an upper support. Both ends of the upper support are fixedly connected to the inner wall of the housing. The fixed ring is also rotatably connected to a circular groove on the inner wall of a turntable. Three sets of chucks are located in the middle of the central shaft. The upper and lower chucks have the same thickness, while the middle chuck is twice the thickness of the upper and lower chucks. This invention can wind up the cable outside the charging pile after charging is complete. Furthermore, this invention can effectively control the cable winding of dual-gun charging piles, allowing simultaneous winding of both guns, as well as winding up only one charging gun. This multi-functional control method only requires adjusting the vertical position of the central shaft, achieved through engagement or disengagement with the upper and lower turntables.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle charging equipment technology, and in particular to a charging pile equipped with a cable winding mechanism. Background Technology

[0002] With the rapid expansion of the new energy vehicle market, charging piles, as the core supporting facilities for its development, have become key factors affecting the popularization of new energy vehicles in terms of their functionality and ease of use. However, some charging piles on the market currently have some deficiencies in cable management, especially in the handling of dual-gun charging piles and external cables, which urgently need to be improved with innovative technologies. The external cables of existing charging piles are often in a free-flowing state when not charging, making them susceptible to being run over by vehicles, trampled and worn, and corroded by the environment. In dual-gun charging piles, the winding mechanism often uses two independent motors for separate drive, which has problems such as complex structure, high cost, and difficulty in synchronous control. In addition, in outdoor site applications, some charging piles are installed in outdoor fenced parking lots. Some users, in order to save parking fees, will forcibly pull the charging gun and cable from behind the charging pile out of the fence to charge vehicles in unauthorized areas outside the fence, which can easily lead to excessive stretching and damage to the cable and safety management hazards. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention proposes a charging pile equipped with a cable winding mechanism, which effectively solves the problems in the background art. The present invention provides the following technical solution: A charging pile equipped with a cable winding mechanism includes: a housing, a top cover, a winding mechanism, and a locking mechanism; The winding mechanism includes an upper support, with both ends of the upper support fixedly installed on the inner wall of the housing. A fixing ring is fixedly installed in the middle of the upper support, and a turntable is rotatably installed on the outer wall of the fixing ring. A central shaft is movably connected inside the fixing ring. Three sets of chucks are provided in the middle of the central shaft. The upper and lower chucks have the same thickness, and the middle chuck is twice the thickness of the upper and lower chucks. The grooves on the outer edges of the three sets of chucks on the central shaft are the same as the grooves on the inner edge of the turntable. The locking mechanism includes a limiting plate, which is fixedly installed at the corner of the top of the housing. A locking rod is rotatably mounted on the shaft of the limiting plate. The thickness of the part of the locking rod that extends into the housing is the same as the thickness of the chuck in the middle of the central shaft.

[0004] Preferably, the winding mechanism further includes an electric cylinder, a drive assembly, and a pressing assembly. The piston rod end of the electric cylinder is fixedly connected to the upper end of the central shaft, and the cylinder body of the electric cylinder is fixedly mounted on the top cover. The drive assembly can drive the central shaft to rotate. The pressing assembly can limit the vertical and horizontal directions of the cable.

[0005] Preferably, the extrusion assembly includes an upper support and a telescopic rod. The upper support has multiple extension plates on its side, and the distance between the extension plates and the turntable is the same as the diameter of the cable. The outer end of the telescopic rod is a right angle shape and is fixedly connected to the right angle wall inside the housing. The inner end of the telescopic rod is provided with a roller, which abuts against the cable. A spring is installed on the body of the telescopic rod.

[0006] Preferably, the drive assembly includes a side bracket and a worm gear. The two ends of the side bracket are fixedly installed on the inner wall of the housing. A servo motor is installed on a protrusion on the side bracket. A worm is rotatably installed in the circular hole on the protrusion. One end of the worm is connected to the motor shaft of the servo motor. The worm meshes with the worm gear, and the worm gear is slidably sleeved on the central shaft. A right-angle bracket is also provided on the side of the side bracket, which holds the upper and lower surfaces of the worm gear in place.

[0007] Preferably, the locking mechanism further includes a limiting rod and a spring piece. The upper and lower ends of the limiting rod are fixedly installed on the side of the housing. The limiting rod passes through the arc-shaped groove on the limiting plate, and the arc-shaped groove is concentric with the rotating shaft on the limiting plate. The spring piece is fixedly installed on the thin wall of the opening on the side of the housing, and the spring piece abuts against the side of the locking rod.

[0008] Preferably, the outer edge of the turntable is provided with positive teeth, the top of the turntable is provided with multiple slightly raised strips, and the middle winding part of the turntable is provided with a vortex-shaped limit to fill the gap of the innermost circle of the cable. Preferably, there are two fixing rings, one upper and one lower. The lower fixing ring is fixedly connected to the lower bracket, and the two ends of the lower bracket are fixedly installed on the inner wall of the housing.

[0009] Preferably, a conductive slip ring is also fixedly embedded on the fixed ring. The conductive slip ring is in contact with the conductive coil on the inner wall of the turntable. The conductive coil is connected to a cable. The cable passes through the turntable and extends to the outer edge of the turntable. The circular interface on the conductive slip ring is connected to the circuit and the electronic control system.

[0010] Preferably, a ball bearing is installed at the position where the shaft of the limiting plate is rotatably connected to the locking rod.

[0011] Preferably, the limiting plate is semi-circular in shape, gradually widening from the front end to the rear end.

[0012] The advantages of this invention compared to the prior art are: 1. When in use, the external cable of the device can be automatically wound up when not charging. The invention can effectively control the cable winding of dual-gun charging piles, allowing both guns to be wound up simultaneously or even just one side of the charging gun. This multi-functional control method can be achieved simply by adjusting the vertical position of the central shaft and controlling its engagement or disengagement with the upper and lower turntables, without the need for dual motors or dual systems.

[0013] 2. When the cable of the present invention is pulled out, if the cable is pulled backwards towards the charging pile, it will trigger the rotation of the locking lever. The locking lever will lock the rotation of the central shaft, thereby preventing the turntable from rotating and the cable from being pulled out. This can effectively prevent the cable from being pulled backwards and avoid charging over the fence.

[0014] 3. The telescopic rod of the present invention is installed at the four corners of the turntable, which can elastically compress the cable being wound on the turntable from different directions, so that the gap is controlled to the minimum when the cable is wound. At the same time, the cable on the upper turntable is vertically limited by the extension plate to prevent the cable from being squeezed upward by the force of the telescopic rod during winding. The cable on the lower turntable is vertically limited by the narrow gap between the upper and lower turntables, which enhances the tight arrangement between the cables.

[0015] 4. The winding mechanism of the present invention is installed at the top position inside the housing, occupying a small space, so that the circuit and control system below can be integrated and connected, and the operating space will not be obstructed during equipment maintenance. Attached Figure Description

[0016] Figure 1 This is an isometric view of the overall mechanism of the present invention.

[0017] Figure 2 This is an internal structural diagram of the overall structure of the present invention.

[0018] Figure 3 This is a first-view view of the overall structure of the turntable in this invention.

[0019] Figure 4 This is a second perspective view of the overall structure of the turntable in this invention.

[0020] Figure 5 This is a structural diagram of the turntable of the present invention.

[0021] Figure 6 This is a cross-sectional view showing the connection relationship at the central axis of the present invention.

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

[0023] Figure 8 This is a structural diagram of the central shaft of the present invention.

[0024] Figure 9 This is a first-view view of the connection relationship at the lever of the present invention.

[0025] Figure 10 This is a second perspective view of the connection relationship at the lever of the present invention.

[0026] Figure 11This is a diagram showing the positional relationship between the lever and the central shaft of the present invention.

[0027] Reference numerals: 1-Housing; 2-Top cover; 3-Upper bracket; 4-Telescopic rod; 5-Spring; 6-Extension plate; 7-Electric cylinder; 8-Fixing ring; 9-Lower bracket; 10-Side bracket; 11-Servo motor; 12-Worm gear; 13-Right angle bracket; 14-Worm wheel; 15-Central shaft; 16-Turntable; 17-Conductive slip ring; 18-Limiting plate; 19-Clamping rod; 20-Limiting rod; 21-Spring piece. Detailed Implementation

[0028] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with 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 practiced in many other ways different from those described herein, 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] In the description of this invention, it should be noted that the terms "upper", "lower", "in", "out", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only for the convenience of describing this 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. Therefore, they should not be construed as limiting this invention. Example

[0030] like Figure 1 - Figure 11 As shown, a charging station equipped with a cable winding mechanism includes: The central shaft 15 is rotatably connected to the fixed ring 8, which is fixedly installed on the upper bracket 3. Both ends of the upper bracket 3 are fixedly connected to the inner wall of the housing 1. The fixed ring 8 is also rotatably connected to the circular groove on the inner wall of the turntable 16. The central shaft 15 has three sets of chucks in the middle. The upper chuck and the lower chuck have the same thickness, and the middle chuck is twice the thickness of the upper and lower chucks. The grooves on the outer edges of the three sets of chucks on the central shaft 15 are the same as the grooves on the inner edge of the turntable 16. A limiting plate 18 is fixedly installed at the corner of the top of the housing 1. A locking rod 19 is rotatably installed on the shaft of the limiting plate 18. The thickness of the part of the locking rod 19 that extends into the housing 1 is the same as the thickness of the chuck in the middle of the central shaft 15.

[0031] In use, this invention can reel in a dual-gun charging station. There is a charging cable on each side of the housing 1. The cable reeling mechanism is installed at the top inside the housing 1. The upper bracket 3 and lower bracket 9 are fixedly installed on the inner wall of the housing 1. A fixing ring 8 is installed in the middle of the upper bracket 3. The fixing ring 8 is rotatably connected to the circular groove of the inner ring of the turntable 16. Simultaneously, a conductive slip ring 17 is embedded in the outer wall of the fixing ring 8. The conductive slip ring 17 contacts the conductive coil embedded in the inner wall of the turntable 16, thus achieving a circuit connection between the rotating conductive slip ring 17 and the fixed fixing ring 8, preventing cable length redundancy and wire tangling. The interface on the conductive slip ring 17 is connected to the overall circuit control system, enabling the cable to receive power. The innermost end of the cable passes through the turntable 16 and connects to the conductive coil embedded in the turntable 16, forming a complete charging circuit.

[0032] A central shaft 15 is movably mounted inside the fixed ring 8. The upper end of the central shaft 15 is fixedly connected to the piston rod of the electric cylinder 7. The cylinder body of the electric cylinder 7 is fixedly mounted on the top cover 2. A worm gear 14 is slidably mounted on the lower end of the central shaft 15. The worm gear 14 meshes with the worm 12. Both ends of the worm 12 are rotatably mounted in the round holes on the side bracket 10. One end of the worm 12 is also connected to the motor shaft of the servo motor 11. The servo motor 11 is fixedly mounted on the side bracket 10. A right-angle bracket 13 is also fixedly mounted on the side of the side bracket 10. The right-angle bracket 13 limits and locks the vertical position of the worm gear 14 to prevent it from moving when the central shaft 15 moves up and down. The default initial position of the central shaft 15 is at the bottom, meaning the chuck in the middle of the central shaft 15 engages with the inner groove of the lower turntable 16, and the chuck on top of the central shaft 15 engages with the inner groove of the upper turntable 16. When using a charging head, viewed from the charging pile panel, when using the charging cable on the right, the electric cylinder 7 starts, causing the central shaft 15 to move upward a fixed distance, which is the thickness of the chuck on top of the central shaft 15. At this time, the chuck on top of the central shaft 15 disengages from the inner groove of the upper turntable 16, and the upper turntable 16 becomes free to rotate. The inner groove of the lower turntable 16 is still engaged with the chuck in the middle of the central shaft 15. Because the thickness of the chuck in the middle of the central shaft 15 is twice that of the upper and lower chucks, the lower turntable 16 remains locked. At this time, a prompt sound will be heard from the device. Then, depending on the parking distance of the car, the charging gun can be used to pull out the cable for charging. When charging using the charging cable on the left, the central shaft 15 moves upward a fixed distance under the action of the electric cylinder 7. This distance is three times the thickness of the chuck on the upper part of the turntable 16. The movement is continuous and seamless. The following explains the engagement state of the central shaft 15 and the turntable 16 at three key points during the movement process. When moving the thickness of the chuck on the upper part of the first central shaft 15, as described above, the upper turntable 16 unlocks and the lower turntable 16 locks. When moving the thickness of the chuck on the upper part of the second central shaft 15, the chuck on the upper part of the central shaft 15 moves within the cavity of the upper turntable 16 without engagement. The chuck in the middle of the central shaft 15 disengages from the inner groove of the lower turntable 16, and the chuck on the lower part of the central shaft 15... Also in the cavity of the inner ring of the lower turntable 16, at this time none of the three chucks are engaged. This state is suitable for charging both sides at the same time. When the thickness of the upper chuck of the third central shaft 15 is moved, the upper chuck of the central shaft 15 is still not engaged in the cavity of the inner ring of the upper turntable 16. The middle chuck of the central shaft 15 is engaged with the slot of the inner ring of the upper turntable 16. The lower chuck of the central shaft 15 is still not engaged in the cavity of the inner ring of the lower turntable 16. At this time, the upper turntable 16 is locked, and the lower turntable 16 rotates freely. At this time, the device emits a prompt sound, and the left cable can be pulled out for charging. It should be noted that the vertical distance between the cavities of the inner rings of the upper and lower turntables 16 is three times the thickness of the upper chuck of the central shaft 15.

[0033] When charging is complete, the upper or lower turntable 16 will rotate under the rotation of the motor to wind up the cable. Specifically, from the perspective of the charging pile panel, when winding up the charging cable on the left, the electric cylinder 7 starts, driving the central shaft 15 to move upward a fixed distance, which is the thickness of the chuck on the upper part of the central shaft 15. At this time, the chuck on the upper part of the central shaft 15 disengages from the slot of the inner ring of the upper turntable 16, while the slot of the inner ring of the lower turntable 16 is still engaged with the chuck in the middle of the central shaft 15. Because the thickness of the chuck in the middle of the central shaft 15 is twice that of the upper and lower chucks, the lower turntable 16 is locked. At this time, the servo motor 11 starts to drive the worm gear 12 to rotate, thereby driving the worm wheel 14 to rotate, which in turn causes the central shaft 15 to drive the lower turntable 16 to rotate, thereby winding up the cable on the left. When winding up the charging cable on the right, the central shaft 15 moves upward a fixed distance under the action of the electric cylinder 7. This distance is three times the thickness of the chuck on the upper part of the turntable 16. The movement is continuous and seamless. The following explains the engagement state of the central shaft 15 and the turntable 16 at three key points during the movement process. When moving the thickness of the chuck on the upper part of the first central shaft 15, as described above, the upper turntable 16 unlocks and the lower turntable 16 locks. When moving the thickness of the chuck on the upper part of the second central shaft 15, the chuck on the upper part of the central shaft 15 moves within the cavity of the upper turntable 16 without engagement. The chuck in the middle of the central shaft 15 disengages from the inner ring groove of the lower turntable 16, and the chuck below the central shaft 15 is also in the inner ring cavity of the lower turntable 16. At this time, all three chucks are engaged. When the thickness of the upper chuck on the third central shaft 15 is moved, the upper chuck on the central shaft 15 is still not engaged in the cavity of the inner ring of the upper turntable 16. The middle chuck on the central shaft 15 is engaged with the slot of the inner ring of the upper turntable 16. The lower chuck on the central shaft 15 is still not engaged in the cavity of the inner ring of the lower turntable 16. At this time, the upper turntable 16 is locked, and the lower turntable 16 rotates freely. The servo motor 11 starts and drives the worm gear 12 to rotate, which in turn drives the worm wheel 14 to rotate. This causes the central shaft 15 to drive the upper turntable 16 to rotate, thereby winding up the cable on the right. When the charging cables on both sides are wound up at the same time, the initial position of the central shaft 15 does not need to be moved. The motor drive can directly drive the two turntables 16 to rotate at the same time, thus completing the simultaneous winding. When the upper and lower turntables 16 rotate, the spring 5 causes the telescopic rod 4 to press inward, and the rollers on the telescopic rod 4 to press the cable inward, so that the cable is wound more tightly. During this process, the upper extension plate 6 also provides vertical limitation, so that the cable is tightly attached in all directions.

[0034] When the charging station is in use, to prevent the cable from being pulled backward, this device is equipped with a locking mechanism. Specifically, when the cable is pulled backward, the vertical direction of the cable is blocked by the limiting plate 18, and the cable at the outlet can only be forced to deviate directly backward. The cable will squeeze the clamping rod 19 to rotate, causing the clamping rod 19 to lock the chuck in the middle of the central shaft 15, preventing the central shaft 15 from rotating, thus preventing the cable from being pulled out. Due to the different outlet directions, the limiting method of the clamping rods 19 on both sides of the central shaft 15 is that one clamping rod 19 presses against the central shaft 15 chuck, and the other clamping rod 19 hooks the central shaft 15 chuck.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A charging pile equipped with a cable winding mechanism, characterized in that, include: Shell (1), top cover (2), winding mechanism, locking mechanism; The winding mechanism includes an upper support (3) and an electric cylinder (7). The two ends of the upper support (3) are fixedly installed on the inner wall of the housing (1). A fixing ring (8) is fixedly installed in the middle of the upper support (3). A turntable (16) is rotatably installed on the outer wall of the fixing ring (8). A central shaft (15) is axially movable inside the fixing ring (8). The piston rod end of the electric cylinder (7) is fixedly connected to the upper end of the central shaft (15). The cylinder body of the electric cylinder (7) is fixedly installed on the top cover (2). The central shaft (15) has three sets of chucks in the middle. The upper chuck and the lower chuck have the same thickness, and the middle chuck has twice the thickness of the upper and lower chucks. The teeth on the outer edge of the three sets of chucks on the central shaft (15) are matched with the grooves on the inner edge of the turntable (16). When the central shaft (15) moves axially, the teeth and grooves can selectively engage or disengage. The locking mechanism includes a limiting plate (18), which is fixedly installed at the corner of the top of the housing (1). A locking rod (19) is rotatably installed on the shaft of the limiting plate (18). The thickness of the part of the locking rod (19) that extends into the housing (1) is the same as the thickness of the chuck in the middle of the central shaft (15).

2. A charging pile equipped with a cable winding mechanism according to claim 1, characterized in that, The winding mechanism also includes a drive component and a pressing component. The drive component can drive the central shaft (15) to rotate, and the pressing component can limit the vertical and horizontal directions of the cable.

3. A charging pile equipped with a cable winding mechanism according to claim 2, characterized in that, The extrusion assembly includes a telescopic rod (4), and the side of the upper support (3) is provided with multiple extension plates (6). The vertical distance between the lower surface of the extension plate (6) and the upper surface of the turntable (16) is the same as the diameter of the cable. The outer end of the telescopic rod (4) is a right angle shape and is fixedly connected to the right angle wall inside the housing (1). The inner end of the telescopic rod (4) is provided with a roller, which abuts against the cable. A spring (5) is installed on the rod body of the telescopic rod (4).

4. A charging pile equipped with a cable winding mechanism according to claim 2, characterized in that, The drive assembly includes a side bracket (10) and a worm gear (14). The two ends of the side bracket (10) are fixedly installed on the inner wall of the housing (1). A servo motor (11) is installed on the protrusion on the side bracket (10). A worm (12) is rotatably installed in the round hole on the protrusion. One end of the worm (12) is connected to the motor shaft of the servo motor (11). The worm (12) meshes with the worm gear (14). The worm gear (14) is slidably sleeved on the central shaft (15) and is circumferentially fixed to the central shaft (15) but axially slidable relative to it. The side of the side bracket (10) is also provided with a right angle bracket (13). The right angle bracket (13) locks the upper and lower surfaces of the worm gear (14) to limit the axial displacement of the worm gear (14).

5. A charging pile equipped with a cable winding mechanism according to claim 1, characterized in that, The locking mechanism also includes a limiting rod (20) and a spring piece (21). The upper and lower ends of the limiting rod (20) are fixedly installed on the side of the housing (1). An arc-shaped groove is provided on the limiting plate (18). The arc-shaped groove is concentric with the rotating shaft on the limiting plate (18). The limiting rod (20) passes through the arc-shaped groove. The spring piece (21) is fixedly installed on the thin wall of the opening on the side of the housing (1). The spring piece (21) abuts against the side of the locking rod (19).

6. A charging pile equipped with a cable winding mechanism according to claim 1, characterized in that, The outer edge of the turntable (16) is provided with straight teeth, and the top of the turntable (16) is provided with multiple slightly raised strips. The middle winding part of the turntable (16) is provided with a vortex-shaped wire baffle plate, which is used to fill the gap of the innermost ring of the cable.

7. A charging pile equipped with a cable winding mechanism according to claim 1, characterized in that, The fixing ring (8) has two parts, one above the other. The lower fixing ring (8) is fixedly connected to the lower bracket (9). The two ends of the lower bracket (9) are fixedly installed on the inner wall of the housing (1).

8. A charging pile equipped with a cable winding mechanism according to claim 1, characterized in that, The stator portion of the fixed ring (8) is fixedly embedded with a conductive slip ring (17). The rotor portion of the conductive slip ring (17) is in contact with the conductive coil on the inner wall of the turntable (16). The conductive coil is connected to a cable, which passes through the turntable (16) and extends to the outer edge of the turntable (16). The circular interface on the conductive slip ring (17) is connected to the circuit.

9. A charging pile equipped with a cable winding mechanism according to claim 1, characterized in that, A ball bearing is installed at the position where the shaft of the limiting plate (18) is rotatably connected to the locking rod (19).

10. A charging pile equipped with a cable winding mechanism according to claim 1, characterized in that, The limiting plate (18) is semi-circular in shape and gradually widens from the front end to the rear end.

Images