A charging cable automatically stretches and retracts intelligent charging pile

Abstract

The utility model belongs to the field of charging pile, concretely relates to an intelligent charging pile of charging cable automatic telescopic, including box, intelligent control circuit board module, winding disc subassembly, conducting slip ring and drive mechanism, winding disc subassembly includes winding disc and carousel, and the winding space for layer winding charging cable is formed between winding disc and carousel, a plurality of positioning gyro wheel subassemblies are arranged around winding disc subassembly in the box, every positioning gyro wheel subassembly includes support rod and positioning gyro wheel, two gyro wheel grooves that roll with the edge of winding disc and carousel respectively are arranged on the positioning gyro wheel, so as to carry out the radial and axial location of the rotation of winding disc subassembly, a plurality of positioning gyro wheel subassemblies are additionally arranged in the box, a plurality of positioning gyro wheel subassemblies can realize the radial and axial location of the rotation of winding disc subassembly, so that winding disc subassembly does not occur left and right swing or radial jumping when rotating, ensures that cable can be closely, flatly wound, ensures that charging cable normal telescopic use.

Description

Technical Field

[0001] This utility model belongs to the field of charging pile technology, specifically relating to an intelligent charging pile with an automatically retractable charging cable. Background Technology

[0002] Charging piles, also known as electric vehicle charging stations or electric vehicle power supply equipment, are devices that provide electrical energy to electric vehicles, enabling them to store enough electricity to support their operation. When charging an electric vehicle, the charging gun needs to be pulled out of the charging pile's mounting box. Because the car's charging interface is low to the ground, using the charging gun requires dragging the charging cable, which is long and heavy, making it time-consuming, laborious, and difficult to operate. Furthermore, each time the cable is charged, its insulation layer rubs against the ground, causing damage and shortening its lifespan, potentially leading to safety hazards. Therefore, smart charging piles with automatically retractable charging cables have emerged on the market.

[0003] Existing smart charging stations with automatic retractable charging cables cannot ensure that the charging cable of the charging gun is neatly coiled on the reel, which easily leads to problems such as knots and tangles in the charging cable, causing the charging cable of the charging gun to be unable to retract and be used normally. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide an intelligent charging station with an automatically retractable charging cable, which avoids the charging cable from getting tangled or messy and ensures that the charging cable can be used normally.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A smart charging pile with automatic retractable charging cable includes a housing, a smart control circuit board module, a coil assembly rotatably disposed within the housing, a conductive slip ring, and a drive mechanism. The conductive slip ring is disposed at the central axis of the coil assembly and electrically connected to the charging cable. The drive mechanism is disposed within the housing and is drively connected to the coil assembly to drive the coil assembly to perform the action of winding and unwinding the charging cable. The coil assembly includes a coil rotatably disposed within the housing and a turntable disposed on the coil. A winding space for winding the charging cable is formed between the coil and the turntable. Multiple positioning roller assemblies are disposed around the coil assembly within the housing. Each positioning roller assembly includes a support rod disposed within the housing and a positioning roller rotatably disposed on the support rod. The positioning roller is provided with two roller grooves that roll in cooperation with the edges of the coil and the turntable to limit the rotation of the coil assembly radially and axially.

[0006] In some embodiments, a spring assembly is also included, which is disposed inside the housing at the outer side of the corresponding reel assembly. The spring assembly includes a spring seat and a spring disposed inside the housing. One end of the spring is connected to the pressure block of the winding space, and the other end of the spring is connected to the spring seat. The spring and the charging cable are located in the plane of the winding space. From the inner end of the charging cable to the outermost layer of the charging cable, the spring is attached to it, so that the spring provides an inward force to the charging cable.

[0007] In some embodiments, one end of the charging cable is connected to a wire clamping block within the cable winding space, and the other end of the charging cable is connected to a charging gun.

[0008] In some embodiments, the drive mechanism includes a motor and a transmission assembly. The intelligent control circuit board module is disposed inside the housing and is electrically connected to the motor, and is used to control the start, stop and direction of the motor. The transmission assembly is connected between the output shaft of the motor and the winding reel, and is used to transmit the power of the motor to the winding reel.

[0009] In some embodiments, the gear transmission assembly includes a drive gear disposed on the output shaft of the motor, and a transmission gear disposed on one side of the winding reel and meshing with the drive gear.

[0010] In some embodiments, the housing includes a base, a rear cover disposed on one side of the base, and a front cover disposed on the other side of the base. A first receiving cavity is formed between the rear cover and the base for accommodating a winding reel assembly and a conductive slip ring. A second receiving cavity is formed between the front cover and the base for accommodating a drive mechanism and an intelligent control circuit board module.

[0011] In some embodiments, a positioning turntable is fixedly installed inside the housing at the central axis position corresponding to the winding reel, the conductive slip ring is fixed on the positioning turntable, a rotating disk is fixedly installed at the central axis position of the winding reel, and a ball bearing is provided between the positioning turntable and the rotating disk.

[0012] In some embodiments, a limit monitoring component is provided inside the housing. The limit monitoring component includes a fixed plate, a trigger component, a take-up limit switch, and a release limit switch. The fixed plate is disposed inside the housing. The trigger component is slidably disposed on the fixed plate and is linked to the turntable to reciprocate on the fixed plate as the turntable rotates. The take-up limit switch and the release limit switch are respectively disposed on the fixed plate and electrically connected to the control circuit board module. At two extreme positions during the reciprocating sliding process, the trigger component actuates the take-up limit switch or the release limit switch to send a limit signal to the control circuit board module.

[0013] In some embodiments, the triggering component includes a drive shaft, a trigger shaft, and a connecting plate; the fixed plate has two sliding holes, and the drive shaft and the trigger shaft are slidably inserted into the two sliding holes respectively; the drive shaft is linked to the turntable to reciprocate within the sliding holes of the fixed plate as the turntable rotates; both ends of the connecting plate are connected to the drive shaft and the trigger shaft respectively, so that the drive shaft and the trigger shaft are linked; the drive shaft drives the trigger shaft to two extreme positions during the reciprocating sliding process, respectively actuating the take-up limit switch or the release limit switch.

[0014] In some embodiments, a spiral-shaped actuating groove is provided on the side of the turntable away from the winding reel; one end of the drive shaft extends into and passes through the actuating groove, so that when the turntable rotates, it can push the drive shaft through the groove wall of the actuating groove, thus forming a linkage between the drive shaft and the turntable.

[0015] The beneficial effects of this invention are as follows: Multiple positioning roller assemblies are added inside the housing. These assemblies can radially and axially limit the rotation of the cable reel assembly, preventing it from wobbling left and right or jumping radially during rotation. This ensures the cable is tightly and neatly wound, while reducing noise and wear. It also prevents the charging cable from tangling or becoming twisted, ensuring normal extension and retraction. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0017] Figure 1 This is a perspective view of an embodiment of the present utility model; Figure 2 This is a cross-sectional view of an embodiment of the present utility model; Figure 3 This is an exploded view of an embodiment of the present utility model; Figure 4 This is an internal structural diagram of an embodiment of the present utility model; Figure 5 This is a perspective view of the limit monitoring component according to an embodiment of the present utility model; Figure 6 This is a perspective view of the trigger component in an embodiment of the present invention. Detailed Implementation

[0018] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0020] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0021] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments: like Figure 1-3 As shown, an intelligent charging station with an automatically retractable charging cable includes a housing 1, an intelligent control circuit board module 2, a cable reel assembly 3 rotatably disposed within the housing 1, a conductive slip ring 4, and a drive mechanism 5. The conductive slip ring 4 is disposed at the central shaft of the cable reel assembly 3 and electrically connected to the charging cable 6. The drive mechanism 5 is disposed within the housing 1 and is drive-connected to the cable reel assembly 3 to drive the cable reel assembly 3 to perform the action of retracting and extending the charging cable 6. The cable reel assembly 3 includes a cable reel 31 rotatably disposed within the housing 1 and a cable reel 31 disposed within the reel. The turntable 32 on the reel 31 forms a winding space 300 between the reel 31 and the turntable 31 for winding the charging cable 6. Multiple positioning roller assemblies 7 are arranged around the reel assembly 3 inside the housing 1. Each positioning roller assembly 7 includes a support rod 71 arranged inside the housing 1 and a positioning roller 72 rotatably arranged on the support rod 71. The positioning roller 72 is provided with two roller grooves 721 that roll in cooperation with the edges of the reel 31 and the turntable 32 to limit the rotation of the reel assembly 3 radially and axially.

[0022] like Figure 2-4As shown, it also includes a coil spring assembly 8 disposed inside the housing 1 on the outer side of the corresponding reel assembly 3. The coil spring assembly 8 includes a coil spring seat 81 and a coil spring 82 disposed inside the housing 1. One end of the coil spring 82 is connected to the pressure block 301 of the winding space 300, and the other end of the coil spring 82 is connected to the coil spring seat 81. The coil spring 82 and the charging cable 6 are located in the plane of the winding space 300. From the inner end of the charging cable 6 to the outermost layer of the charging cable 6, the coil spring 82 is attached to it, so that the coil spring 82 provides an inward force to the charging cable 6. The coil spring can provide an inward force to the charging cable. Whether the reel assembly rotates in the forward or reverse direction during the charging cable unwinding or rewinding process, the charging cable is orderly unwinding or rewinding, and there will be no loosening or knotting of the charging cable. The unwound portion of the charging cable is tightly arranged in the winding space, improving the stability of the charging cable extension and retraction. One end of the charging cable 6 is connected to the wire clamping block 301 within the winding space 300, and the other end is connected to the charging gun 61. The charging cable is connected within the winding space via the wire clamping block, facilitating the assembly of the charging cable with the winding reel assembly. The drive mechanism 5 includes a motor 51 and a transmission assembly 52. ​​The intelligent control circuit board module 2 is housed within the housing 1 and is electrically connected to the motor 51, controlling its start, stop, and direction. The transmission assembly 52 connects the output shaft of the motor 51 to the winding reel 31, transmitting power from the motor 51 to the winding reel 31. The gear transmission assembly 52 includes a drive gear 521 mounted on the output shaft of the motor 51 and a transmission gear 522 mounted on one side of the winding reel 31 and meshing with the drive gear 521. The motor drives the winding reel via gears, ensuring more reliable transmission between the motor and the winding reel.

[0023] like Figure 2 and 3 As shown, the housing 1 includes a base 11, a rear cover 12 disposed on one side of the base 11, and a front cover 13 disposed on the other side of the base 11. A first accommodating cavity 100 is formed between the rear cover 12 and the base 11 to accommodate the coil assembly 3 and the conductive slip ring 4. A second accommodating cavity 101 is formed between the front cover 13 and the base 11 to accommodate the drive mechanism 5 and the intelligent control circuit board module 2. The drive mechanism is placed in the first accommodating cavity of the housing. The housing adopts an independent cavity structure design, which is beneficial to improving the working reliability of the intelligent charging pile. A positioning turntable 33 is fixedly disposed inside the housing 1 at the central axis position corresponding to the coil 31. The conductive slip ring 4 is fixed on the positioning turntable 33. A rotating disk 34 is fixedly disposed at the central axis position of the coil 31. A ball bearing 35 is disposed between the positioning turntable 33 and the rotating disk 34. The coil is rotated on the positioning turntable inside the housing through the rotating disk, ensuring that the coil can rotate reliably inside the housing.

[0024] like Figure 5 and 6As shown, a limit monitoring component 9 is installed inside the housing 1. The limit monitoring component 9 includes a fixed plate 91, a trigger component 92, a take-up limit switch 93, and a release limit switch 94. The fixed plate 91 is installed inside the housing 1. The trigger component 92 is slidably installed on the fixed plate 91 and is linked with the turntable 32 to slide back and forth on the fixed plate 91 as the turntable 32 rotates. The take-up limit switch 93 and the release limit switch 94 are respectively installed on the fixed plate 91 and are electrically connected to the control circuit board module 2. At the two extreme positions during the reciprocating sliding process, the trigger component 92 actuates the take-up limit switch 93 or the release limit switch 94 to send a limit signal to the control circuit board module 2. The trigger assembly 92 includes a drive shaft 921, a trigger shaft 922, and a connecting plate 923. The fixed plate 91 has two sliding holes 911, and the drive shaft 921 and the trigger shaft 922 are slidably inserted into the two sliding holes 911 respectively. The drive shaft 921 is linked with the turntable 32 to slide back and forth in the sliding holes 911 of the fixed plate 91 as the turntable 32 rotates. The two ends of the connecting plate 923 are respectively connected to the drive shaft 921 and the trigger shaft 922 to link the drive shaft 921 and the trigger shaft 922. The drive shaft 921 drives the trigger shaft 922 to two extreme positions during the reciprocating sliding process, which respectively actuate the take-up limit switch 93 or the release limit switch 94. A spiral-shaped actuation groove 321 is provided on the side of the turntable 32 away from the reel 31. One end of the drive shaft 921 extends into and passes through the actuation groove 321, so that when the turntable 32 rotates, it can push the drive shaft 921 through the groove wall of the actuation groove 321, forming a linkage between the drive shaft 921 and the turntable 32. The turntable actuates the drive shaft through the actuation groove, and the drive shaft drives the trigger shaft through the connecting plate, thereby ensuring the transmission reliability between the trigger component and the turntable. The take-up limit switch and the release limit switch can monitor the take-up limit position and the release limit position of the trigger shaft, thereby realizing the control of the take-up and release limit positions of the reel, which helps to improve the reliability of take-up and release. When the charging cable is taken up to the limit position (the cable is completely retracted), the trigger shaft triggers the take-up limit switch. The take-up limit switch can send the monitored limit take-up signal to the intelligent control circuit board. The intelligent control circuit board controls the motor to stop rotating, thereby stopping the reel from taking up the cable. When the charging cable is released to its limit position (the cable is fully extended), the trigger shaft triggers the cable release limit switch. The cable release limit switch can send the monitored limit cable release signal to the intelligent control circuit board. The intelligent control circuit board controls the motor to stop rotating, thereby stopping the cable reel from releasing the cable.

[0025] Multiple positioning roller assemblies are added inside the housing. These rollers limit the rotation of the cable reel assembly radially and axially, preventing lateral wobbling or radial jump during rotation. This ensures the cable is tightly and neatly wound, reducing noise and wear. It also prevents the charging cable from tangling or becoming twisted, ensuring proper extension and retraction. The above description is only one embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model; the scope of protection of the present utility model is defined by the claims in the claims, and all equivalent changes and modifications made in accordance with the utility model are within the scope of protection of the present utility model patent.

Claims

1. A smart charging station with an automatically retractable charging cable, characterized in that: The device includes a housing, an intelligent control circuit board module, a coil assembly rotatably mounted inside the housing, a conductive slip ring, and a drive mechanism. The conductive slip ring is located at the central axis of the coil assembly and is electrically connected to the charging cable. The drive mechanism is located inside the housing and is drively connected to the coil assembly to drive the coil assembly to perform the winding and unwinding of the charging cable. The coil assembly includes a coil rotatably mounted inside the housing and a turntable mounted on the coil. A winding space for winding the charging cable is formed between the coil and the turntable. Multiple positioning roller assemblies are arranged around the coil assembly inside the housing. Each positioning roller assembly includes a support rod mounted inside the housing and a positioning roller rotatably mounted on the support rod. The positioning roller has two roller grooves that roll into contact with the edges of the coil and the turntable to limit the rotation of the coil assembly radially and axially.

2. The intelligent charging pile with automatic retractable charging cable according to claim 1, characterized in that: It also includes a coil spring assembly located on the outside of the corresponding reel assembly within the housing. The coil spring assembly includes a coil spring seat and a coil spring located within the housing. One end of the coil spring is connected to the pressure block in the winding space, and the other end of the coil spring is connected to the coil spring seat. The coil spring and the charging cable are located in the plane of the winding space. From the inner end of the charging cable to the outermost layer of the charging cable, there are coil springs that adhere to it, so that the coil springs provide an inward force to the charging cable.

3. The intelligent charging pile with automatic retractable charging cable according to claim 2, characterized in that: One end of the charging cable is connected to the wire pressing block in the winding space, and the other end of the charging cable is connected to the charging gun.

4. The intelligent charging pile with automatic retractable charging cable according to claim 1, characterized in that: The drive mechanism includes a motor and a transmission assembly. The intelligent control circuit board module is installed inside the housing and is electrically connected to the motor to control the motor's start, stop, and direction. The transmission assembly is connected between the motor's output shaft and the winding reel to transmit the motor's power to the winding reel.

5. The intelligent charging pile with automatic retractable charging cable according to claim 4, characterized in that: The transmission assembly includes a drive gear mounted on the output shaft of the motor, and a transmission gear mounted on one side of the winding reel and meshing with the drive gear.

6. The intelligent charging pile with automatic retractable charging cable according to claim 1, characterized in that: The enclosure includes a base, a rear cover disposed on one side of the base, and a front cover disposed on the other side of the base. A first accommodating cavity is formed between the rear cover and the base to accommodate a winding reel assembly and a conductive slip ring. A second accommodating cavity is formed between the front cover and the base to accommodate a drive mechanism and an intelligent control circuit board module.

7. The intelligent charging pile with automatic retractable charging cable according to claim 1, characterized in that: A positioning turntable is fixedly installed inside the box at the central axis position corresponding to the winding reel. The conductive slip ring is fixed on the positioning turntable. A rotating disk is fixedly installed at the central axis position of the winding reel. A ball bearing is provided between the positioning turntable and the rotating disk.

8. The intelligent charging pile with automatic retractable charging cable according to claim 1, characterized in that: The housing is equipped with a limit monitoring component, which includes a fixed plate, a trigger component, a take-up limit switch, and a release limit switch. The fixed plate is located inside the housing. The trigger component is slidably mounted on the fixed plate and is linked to the turntable to reciprocate on the fixed plate as the turntable rotates. The take-up limit switch and the release limit switch are respectively mounted on the fixed plate and electrically connected to the control circuit board module. At two extreme positions during the reciprocating sliding process, the trigger component actuates the take-up limit switch or the release limit switch to send a limit signal to the control circuit board module.

9. The intelligent charging pile with automatic retractable charging cable according to claim 8, characterized in that: The triggering assembly includes a drive shaft, a trigger shaft, and a connecting plate; the fixed plate has two sliding holes, and the drive shaft and the trigger shaft are slidably inserted into the two sliding holes respectively; the drive shaft is linked to the turntable, so as to reciprocate within the sliding holes of the fixed plate as the turntable rotates; both ends of the connecting plate are connected to the drive shaft and the trigger shaft respectively, so that the drive shaft and the trigger shaft are linked; the drive shaft drives the trigger shaft to two extreme positions during the reciprocating sliding process, which respectively actuate the take-up limit switch or the pay-off limit switch.

10. The intelligent charging pile with automatic retractable charging cable according to claim 9, characterized in that: The turntable has a spiral-shaped actuating groove on the side away from the winding reel; one end of the drive shaft extends into and passes through the actuating groove, so that when the turntable rotates, it can push the drive shaft through the groove wall of the actuating groove, thus forming a linkage between the drive shaft and the turntable.

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