AC / DC integrated charging pile

Abstract

This application discloses an AC / DC integrated charging pile, relating to the technical field of charging piles. It includes a body, a cable, and a support assembly. One end of the cable is connected to the body via a winding component, and the other end is connected to the charging head. The support assembly includes a frame rotatably mounted on the side of the body. A central shaft is axially positioned within the frame, and a slide block is slidably mounted on the central shaft. A through-ring is provided on the slide block. In this application, the cable is wound around the central shaft at least once before passing through the through-ring. A constant-force spring is provided between the slide block and the top of the frame. When the frame is flipped to a horizontal position, the constant-force spring pulls the slide block away from the body, causing the through-ring to move to the far end of the central shaft, lifting and supporting the cable above the ground to prevent dragging and wear. Simultaneously, the slide block can slide along the central shaft for length compensation when the user pulls the cable, preventing damage from excessive force on the cable and achieving adaptive suspension support for the cable during charging.

Description

Technical Field

[0001] This application relates to the technical field of charging piles, and more specifically, to an AC / DC integrated charging pile. Background Technology

[0002] With the rapid development of the new energy vehicle industry, AC / DC integrated charging piles, as integrated charging devices that combine AC slow charging and DC fast charging functions, have been widely used in public parking lots, residential areas, and highway service areas. These charging piles are usually equipped with long charging cables to adapt to the different charging port locations of different vehicle models and the different parking postures of the vehicles, meeting the charging needs of users in different parking positions.

[0003] However, long charging cables can lead to wear and tear from contact with the ground. When not in use, the cables of existing charging stations are typically suspended on the side of the station or simply wrapped around a hook. During charging, users need to remove the charging gun from the station and pull it to the vehicle's charging port, inevitably dragging the cable across the ground. Since charging cables are typically 3 to 7 meters long, with a thick cross-section and considerable weight, repeated dragging on the ground over a long period can easily cause wear and cracking of the cable's outer insulation layer, and even expose the internal wires, posing a serious safety hazard of electrical leakage. Furthermore, dragging the cable on the ground can easily attract mud, oil, and other contaminants, affecting the cleanliness of the charging station. These contaminants can also be drawn into the station's interior with the cable, accelerating wear on the winding mechanism and shortening the equipment's lifespan. Summary of the Invention

[0004] To address the problems mentioned in the background art, this application provides an AC / DC integrated charging pile.

[0005] The AC / DC integrated charging pile provided in this application adopts the following technical solution:

[0006] An AC / DC integrated charging pile includes: a body, wherein a winding component is provided inside the body;

[0007] The cable has one end connected to the inside of the machine body via a winding component, and the other end connected to a gun head;

[0008] The support assembly includes a frame rotatably mounted on the side of the body, a central shaft mounted in the frame, a slide block slidably mounted on the central shaft, and a through ring provided on the side of the slide block near the body;

[0009] The cable is wound at least once around the central axis and passes through the loop;

[0010] A constant force spring is also provided between the slide and the top of the frame.

[0011] In some embodiments, the opposite sides of the slide block slide against the opposite inner walls of the frame, and two constant force springs are provided, which are symmetrically connected to the opposite sides of the slide block.

[0012] In some embodiments, the constant tension of the constant force spring is greater than the sum of the sliding friction between the slide and the central shaft and the frictional resistance generated by the cable winding on the central shaft.

[0013] In some implementations, the inner diameter of the loop is larger than the outer diameter of the cable and smaller than the minimum radial dimension of the gun head;

[0014] The axis of the through loop is perpendicular to the axis of the central axis.

[0015] In some embodiments, a rotating base is provided at the bottom of the frame, and a control motor and a motor base are mounted on the side of the machine body. The rotating base is installed in the motor base and is fixedly connected to the output shaft of the control motor.

[0016] In some embodiments, the machine body is further provided with a controller, which is electrically connected to the control motor; when the frame is flipped to a horizontal state, the constant force spring pulls the slide block to slide away from the machine body.

[0017] In some embodiments, the winding component includes a bearing disposed within the machine body, on which a drum is rotatably mounted, and one end of the cable extending into the machine body is wound around the drum;

[0018] The drum is also equipped with take-up springs on opposite sides for driving the drum to rotate and retract the cable.

[0019] In some embodiments, a clip is also installed on the top of the frame facing the body, and a rigid sleeve that cooperates with the clip is provided at the bottom of the gun head;

[0020] The clip includes a flexible clamping rod bent into a semi-circle. The opening distance of the flexible clamping rod is smaller than the diameter of the rigid sleeve at the bottom of the gun head. The gun head is engaged in the clip through the interference fit between the rigid sleeve and the flexible clamping rod.

[0021] In some embodiments, a protective component is also included, the protective component comprising a shield that is slidably mounted on the side of the body along the height direction of the body and covers the periphery of the gun head.

[0022] In some embodiments, a guide groove is also installed on the side of the machine body along its height direction, the protective cover is slidably disposed in the guide groove, and a lifting drive component is also installed at the end of the protective cover away from the ground.

[0023] Compared with the prior art, the beneficial effects of this application are as follows:

[0024] 1. After the cable is wound around the central axis, it passes through the loop and is led out. When the frame is flipped to the horizontal, the constant force spring pulls the slide block to slide away from the machine body along the central axis. The loop moves to the far end of the central axis, raising the cable to a position higher than the ground. This ensures that the cable is never in contact with the ground during the entire charging process, completely solving the safety problem of insulation wear and leakage caused by the cable being dragged on the ground.

[0025] 2. The sliding block is mounted on the central shaft and equipped with a constant force spring. When the user pulls the cable, the cable pulls the sliding block towards the machine body through the through-ring, releasing the cable length and preventing the cable from bearing excessive tensile stress due to excessive tension. When the user stops pulling, the constant force spring pulls the sliding block back to tighten the cable, providing a buffer stroke for the cable and protecting the reliability of the connection at both ends of the cable.

[0026] 3. The cable is wound around the central axis at least once, and the side walls of the frame bind it inside the frame to prevent it from loosening and coming off, while also generating a predetermined frictional resistance in the cable. This resistance, together with the constant force spring tension and the sliding friction of the slide block, forms a mechanical balance system to achieve continuous and reliable support for the cable. Attached Figure Description

[0027] Figure 1 This is a front view of the body of the device in this application;

[0028] Figure 2 This is a rear view of the body of the device in this application;

[0029] Figure 3 This is a schematic diagram of the support components and winding parts of this application;

[0030] Figure 4 This is a schematic diagram of the supporting component in the charging state of this application;

[0031] Figure 5 This is a schematic diagram of the framework and related structures of this application;

[0032] Figure 6 This is a schematic diagram of the protective components of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Body; 2. Supporting components; 3. Protective components;

[0034] 101. Cable; 102. Gun head; 103. Shaft seat; 104. Drum; 105. Winding spring;

[0035] 201. Frame; 202. Rotary base; 203. Motor base; 204. Control motor; 205. Central shaft; 206. Slide; 207. Through-ring; 208. Constant force spring; 209. Clamp;

[0036] 301. Protective cover; 302. Guide groove; 303. Lifting drive component. Detailed Implementation

[0037] The features and exemplary embodiments of various aspects of this application will now be described in detail. In order to make the purpose, technical solution and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] It should be noted that the accompanying drawings are schematic and not to scale. For clarity and convenience, the relative dimensions and proportions of the parts shown in the drawings have been exaggerated or reduced in size, and any dimensions are merely exemplary and not limiting. Furthermore, the same reference numerals are used for the same structures, elements, or fittings appearing in more than two drawings to indicate similar features; for those skilled in the art, this application can be implemented without requiring some of these specific details. The following description of embodiments is merely to provide a better understanding of this application by illustrating examples.

[0039] Reference Figure 1 , Figure 2 As shown, this application provides an AC / DC integrated charging pile, including a body 1, a cable 101 and a support assembly 2.

[0040] In this embodiment, the body 1 is a vertical cabinet structure, and its interior is provided with a cavity for accommodating the charging module, the control module and the winding component. One end of the cable 101 is connected to the interior of the body 1 through the winding component, and the other end is connected to the gun head 102, which is used to plug and cooperate with the charging interface of the electric vehicle.

[0041] Specifically, cable 101 is an AC / DC integrated charging cable, which integrates high-voltage DC lines, AC lines and signal control lines.

[0042] Reference Figures 3 to 5 As shown, the support assembly 2 includes a frame 201, a central shaft 205, a slide 206, a through-ring 207, and a constant force spring 208.

[0043] In this embodiment, the frame 201 is rotatably mounted on the side of the body 1. Specifically, the frame 201 is a rectangular frame structure with opposite long side walls and crossbeams connected to the side walls. The central shaft 205 is installed inside the frame 201 along the axial direction of the frame 201, that is, the two ends of the central shaft 205 are respectively connected to the bottom and top crossbeams of the frame 201, and the central shaft 205 is arranged parallel to the two side walls of the frame 201.

[0044] The slide 206 is slidably mounted on the central shaft 205. That is, the slide 206 has a through hole that fits the central shaft 205 with a clearance. The slide 206 can slide freely along the axial direction of the central shaft 205. A through ring 207 is fixedly provided on the side of the slide 206 near the body 1. The through ring 207 is a ring-shaped component with an inner hole for the cable 101 to pass through.

[0045] Accordingly, after the cable 101 extends out from inside the body 1, it first wraps around the central shaft 205 at least once, then passes through the loop 207 and connects to the gun head 102. In this embodiment, the cable 101 wraps around the central shaft 205 one and a half times to ensure that the cable 101 always keeps in contact with the central shaft 205 during the sliding of the slide block 206, while avoiding excessive resistance due to too many wraps.

[0046] Importantly, a constant force spring 208 is also provided between the slide 206 and the top of the frame 201.

[0047] In this embodiment, one end of the constant force spring 208 is connected to the slide 206, and the other end is connected to the top crossbeam of the frame 201. The constant force spring 208 is a constant force coil spring, and its output tension remains basically constant within its working stroke range. The constant tension of the constant force spring 208 is greater than the sum of the sliding friction between the slide 206 and the central shaft 205 and the frictional resistance generated by the cable 101 winding on the central shaft 205, so that when the frame 201 is flipped to a horizontal state, the slide 206 slides away from the body 1 under the pull of the constant force spring 208.

[0048] As a further improvement of this embodiment, the distance between the two long sidewalls of the frame 201 is adapted to the outer diameter of the cable 101, so that the cable 101 wound on the central shaft 205 can be gathered between the two inner sidewalls of the frame 201.

[0049] Specifically, the two side walls of the frame 201 form left and right limits on the winding cable 101, preventing the cable 101 from loosening, coming off or squeezing each other during the winding process, ensuring that the cable 101 is always neatly wound on the central shaft 205, and avoiding interference with other components or abnormal wear caused by the cable 101 due to loosening.

[0050] As a further improvement of this embodiment, when the constant force spring 208 pulls the slide block 206 to slide towards the top of the frame 201, the slide block 206 has a sliding limit value, that is, the slide block 206 will not slide to the top of the frame 201, but will maintain a safe distance from the top crossbeam of the frame 201 and the clip 209 installed on the top crossbeam.

[0051] Specifically, a limiting ring or limiting boss can be set on the central axis 205 near the top crossbeam. When the slide 206 slides to the limiting ring, the slide 206 is blocked and cannot continue to slide upward. At this time, there is enough gap between the slide 206 and the clamp 209 to avoid mechanical interference between the slide 206 or the through ring 207 and the clamp 209, ensuring that the gun head 102 can smoothly enter or exit the clamp 209. At the same time, the limiting structure also ensures that the slide 206 will not rush out of the top of the frame 201 due to inertia during the flipping process of the frame 201.

[0052] As a further improvement of this embodiment, the opposite sides of the slide 206 slide against the opposite inner walls of the frame 201.

[0053] Specifically, the slide 206 is block-shaped, and its width is adapted to the distance between the inner walls on both sides of the frame 201. The two side surfaces of the slide 206 form sliding contact with the inner walls on both sides of the frame 201. In this way, the slide 206 is guided and limited by the inner walls on both sides of the frame 201 during the sliding process, and will not rotate around the central axis 205. This ensures that the orientation of the through-ring 207 is always aligned with the direction of the body 1, so that the through-ring 207 can stably guide the direction of the cable 101.

[0054] Two constant force springs 208 are provided. The two constant force springs 208 are symmetrically connected to opposite sides of the slide block 206. That is, the two constant force springs 208 are located on the left and right sides of the slide block 206 respectively. The symmetrical arrangement makes the slide block 206 subjected to balanced force and will not tilt or jam during sliding.

[0055] Reference Figure 3 , Figure 4 As shown, the inner diameter of the loop 207 is greater than the outer diameter of the cable 101, but less than the minimum radial dimension of the gun head 102.

[0056] In this embodiment, the inner diameter of the loop 207 is slightly larger than the outer diameter of the cable 101, allowing the cable 101 to slide freely within the loop 207. At the same time, the inner diameter of the loop 207 is smaller than the minimum radial dimension of the gun head 102, preventing the gun head 102 from passing through the loop 207. Thus, when the user releases the gun head 102, it will be stuck outside the loop 207, preventing the gun head 102 and cable 101 from excessively retracting into the body 1, thus providing a limiting protection function. The projections of the axis of the loop 207 and the axis of the central shaft 205 onto the horizontal plane are perpendicular to each other, meaning the loop 207 faces towards the side of the body 1, allowing the cable 101, which is wound from the central shaft 205, to smoothly pass through the loop 207 and extend towards the body 1.

[0057] Reference Figure 3As shown, a rotating base 202 is provided at the bottom of the frame 201, and a control motor 204 and a motor base 203 are fixedly installed on the side of the body 1.

[0058] In this embodiment, the rotating base 202 is installed inside the motor base 203 and is fixedly connected to the output shaft of the control motor 204. The control motor 204 is preferably a stepper motor or a servo motor. When its output shaft rotates, it can drive the rotating base 202 and the frame 201 to flip around the rotation axis of the rotating base 202, thereby realizing the switching between the vertical storage state and the horizontal unfolding state of the frame 201. The control motor 204 has a self-locking function. When the frame 201 is flipped to the horizontal state, the control motor 204 can remain locked to prevent the frame 201 from falling automatically due to gravity.

[0059] The machine body 1 is also equipped with a controller, which is electrically connected to the control motor 204.

[0060] In this embodiment, the controller is the main control unit of the charging pile. It integrates a microprocessor and a memory to receive human-machine interaction instructions and sensor signals from the charging pile, and outputs control signals to control the actions of each execution component. When the frame 201 is flipped to a horizontal state, the constant force spring 208 pulls the slide 206 to slide away from the body 1.

[0061] Specifically, when the frame 201 is in a vertically retracted state, the slide 206 remains stationary when the tension of the constant force spring 208 is balanced with its own weight. The constant force spring 208 is in a slightly stretched state. When the control motor 204 drives the frame 201 to flip from vertical to horizontal, the component of the weight of the slide 206 along the central axis 205 gradually decreases. When the frame 201 flips to a near-horizontal state, the constant tension of the constant force spring 208 is greater than the sum of the sliding friction between the slide 206 and the central axis 205 and the winding friction of the cable 101. Under the pull of the constant force spring 208, the slide 206 slides along the central axis 205 toward the top of the frame 201 (i.e., away from the body 1) until it reaches the limit stop ring and stops.

[0062] As a further improvement to this embodiment, the outer surface of the central shaft 205 is also fitted with a friction-reducing bushing.

[0063] Specifically, a friction-reducing bushing made of self-lubricating material is provided between the through hole of the central shaft 205 and the slide 206. The friction-reducing bushing is fixed on the inner wall of the through hole of the slide 206 or fixedly sleeved on the outer wall of the central shaft 205. The slide 206 slides in contact with the central shaft 205 through the friction-reducing bushing. The friction-reducing bushing effectively reduces the coefficient of sliding friction between the slide 206 and the central shaft 205, further reducing the sliding friction force. This allows the constant force spring 208 to drive the slide 206 to slide smoothly with a smaller constant tension, reducing the selection requirements of the constant force spring 208 and improving the smoothness and reliability of the slide 206.

[0064] Reference Figure 2 , Figure 3 As shown, the winding component includes a bearing 103 fixedly installed inside the machine body 1, a drum 104 rotatably mounted on the bearing 103, and one end of the cable 101 extending into the machine body 1 is wound around the drum 104.

[0065] Specifically, the drum 104 is a cylindrical component that can rotate freely around the shaft seat 103. On opposite sides of the drum 104, there are also winding springs 105 for driving the drum 104 to rotate and retract the cable 101. The winding springs 105 are helical coil springs, with one end fixed to the shaft seat 103 and the other end fixed to the side wall of the drum 104.

[0066] When the cable 101 is pulled out, the drum 104 rotates against the elastic force of the winding spring 105, and the winding spring 105 is further tightened to store energy; when the external force on the cable 101 is released, the winding spring 105 drives the drum 104 to rotate in the opposite direction, and recycles the cable 101 onto the drum 104.

[0067] As a key improvement in this embodiment, after the inner end of the cable 101 is wound onto the drum 104, it also needs to be electrically connected to the charging circuit inside the machine body 1. In order to prevent the connection from becoming loose or breaking due to twisting or pulling during the rotation of the drum 104, this embodiment uses one of the following two methods to achieve the electrical connection between the inner end of the cable 101 and the internal circuit:

[0068] Method 1 (Brush Connection Method): A conductive ring is fixedly installed on the bearing 103, and a brush that slides in contact with the conductive ring is installed on the drum 104. Each wire at the inner end of the cable 101 is connected to the corresponding brush, and each wire of the charging circuit inside the body 1 is connected to the corresponding conductive ring. When the drum 104 rotates, the brush and the conductive ring maintain sliding contact, realizing electrical conduction between the charging circuit and the cable 101. At the same time, the drum 104 is allowed to rotate freely without being restricted by the torsion of the cable 101. Both the conductive ring and the brush are made of wear-resistant conductive material to ensure reliable contact during long-term use.

[0069] Method 2 (Reserved Relaxation Section): A hollow shaft is set at the rotation center of the drum 104. The inner end of the cable 101 enters the drum 104 from the drum wall, extends along the axis of the drum 104, and exits through the hollow shaft at the shaft seat 103. It then connects to the charging circuit inside the body 1. The cable 101 has a reserved relaxation section inside the drum 104 with a length greater than the maximum rotation circumference of the drum 104. This relaxation section is spirally wound inside the drum 104. When the drum 104 rotates, this relaxation section can compensate for the rotation angle of the drum 104 through its own deformation, avoiding tensile or torsional stress at the connection point of the inner end of the cable 101, and ensuring the reliability of the connection point.

[0070] As a further improvement to this embodiment, the connection between the through-ring 207 and the slide 206 is an adjustable connection, that is, the installation height of the through-ring 207 on the slide 206 can be adjusted according to actual needs.

[0071] Specifically, the slide 206 has a vertically extending strip-shaped adjustment hole. The through-ring 207 is fixed to the slide 206 by passing through the strip-shaped adjustment hole with a fastening bolt. The user can loosen the fastening bolt according to the diameter and weight of the cable 101 and the on-site installation height, and adjust the height of the through-ring 207 relative to the slide 206 along the strip-shaped adjustment hole. This adjusts the height of the cable 101 above the ground after it passes through the through-ring 207, ensuring that the lowest point of the cable 101 is always higher than the ground during charging, avoiding contact and friction between the cable 101 and the ground. After adjustment, tightening the fastening bolt locks the position of the through-ring 207. This allows the charging pile to adapt to diverse usage scenarios such as different ground heights and different vehicle charging port heights, and has good versatility.

[0072] Reference Figures 3 to 5 As shown, a clip 209 is also installed on the top side of the frame 201 facing the body 1. The clip 209 is used to fix the gun head 102 when the charging pile is not in use.

[0073] In this embodiment, the clip 209 includes a semi-circular elastic clamping rod. The elastic clamping rod is made of elastic metal wire or plastic, and its opening faces away from the body 1. A rigid sleeve is fixedly provided at the bottom of the gun head 102 (i.e., the end near the connection of the cable 101). The rigid sleeve is a rigid component with a diameter larger than that of the cable 101. The spacing between the openings of the elastic clamping rod is smaller than the diameter of the rigid sleeve. When the user pushes the gun head 102 into the clip 209, the rigid sleeve opens the opening of the elastic clamping rod and is inserted into the semi-circular clamping rod. The elastic clamping rod clamps the rigid sleeve by its own elastic restoring force, thereby achieving an interference fit between the gun head 102 and the clip 209.

[0074] When the gun head 102 needs to be used, the user pulls the gun head 102 outward, and the rigid sleeve overcomes the clamping force of the elastic clamping rod and disengages. The clamp 209 has a simple structure and is easy to operate. It can reliably fix the gun head 102 and prevent the gun head 102 from swinging or falling at will when not in use.

[0075] Reference Figure 1 , Figure 2 , Figure 6 As shown, the charging pile in this embodiment also includes a protective component 3, which includes a protective cover 301. The protective cover 301 is slidably installed on the side of the body 1 along the height direction of the body 1 and covers the periphery of the gun head 102.

[0076] Specifically, a guide groove 302 extending along its height direction is fixedly installed on the side of the body 1. The protective cover 301 is slidably disposed in the guide groove 302. The protective cover 301 is a U-shaped or semi-enclosed cover structure with its opening facing one side of the body 1. The protective cover 301 covers the outer periphery of the gun head 102 and the clip 209, and provides protection for the gun head 102 against dust, water, sun and accidental contact.

[0077] A lifting drive unit 303 is also installed at the end of the protective cover 301 away from the ground (i.e., the top of the protective cover 301).

[0078] Specifically, the lifting drive component 303 can be any one of an electric push rod, a cylinder, or a lead screw motor. The fixed end of the lifting drive component 303 is installed on the side of the machine body 1 or the top of the guide groove 302, and its movable end is connected to the top of the protective cover 301. Under the control of the controller, the lifting drive component 303 can drive the protective cover 301 to slide up and down along the guide groove 302. When the charging pile is not in use, the lifting drive component 303 drives the protective cover 301 to descend to the lowest position, and the protective cover 301 completely covers the gun head 102 and the clip 209, providing comprehensive protection. When charging is required, the lifting drive component 303 drives the protective cover 301 to rise to the highest position, exposing the gun head 102 and the clip 209 for the user to retrieve the gun.

[0079] As the key linkage control logic in this embodiment, the control motor 204 and the lifting drive component 303 are both electrically connected to the controller, and there is an interlocking control relationship between the two to avoid motion interference.

[0080] Specifically, the controller has the following preset control timing:

[0081] When a charging start command is received, the controller first controls the lifting drive 303 to start, driving the protective cover 301 to rise to the highest position. After confirming that the protective cover 301 is fully open and sending an in-position signal, the controller then controls the control motor 204 to start, driving the frame 201 to flip from the vertical state to the horizontal state. This "open the cover first, then flip the frame" sequence ensures that the frame 201 will not collide with the protective cover 301 during the flipping process.

[0082] When the charging end command is received (or the user snaps the gun head 102 back into the clip 209 and confirms that it is in place), the controller first controls the control motor 204 to start, driving the frame 201 to flip from the horizontal state to the vertical state and return it to its original position. After confirming that the frame 201 is fully in place and sending an in-place signal, the controller then controls the lifting drive 303 to start, driving the protective cover 301 to descend to the lowest position and cover the gun head 102 again. This "flipping the frame first and then closing the cover" sequence also avoids motion interference between the protective cover 301 and the frame 201.

[0083] Furthermore, the body 1 or frame 201 is also equipped with position detection sensors (such as Hall sensors or micro switches) to detect the flip-up position of the frame 201 and the lifting position of the cover 301, respectively. When the frame 201 is flipped to the horizontal position, the corresponding sensor sends a signal to the controller. The controller confirms the signal before allowing subsequent operations. When the cover 301 is raised to the highest position, the corresponding sensor sends a signal to the controller. The controller confirms the signal before allowing the frame 201 to flip. The controller is also connected to a human-machine interface (such as a touch screen or mobile APP). Users can issue charging start or stop commands through the human-machine interface. The controller automatically executes the above actions according to the preset interlocking sequence.

[0084] Based on this, the working process of this charging station is as follows:

[0085] Initial state (non-use state): The frame 201 is in a vertically folded state, the gun head 102 is engaged in the clip 209, and the cover 301 is in the lowest position under the drive of the lifting drive 303, completely covering the gun head 102 and the clip 209.

[0086] Charging preparation stage: The user starts the charging process through the human-machine interface. The controller first controls the lifting drive 303 to drive the cover 301 to rise to the highest position, fully exposing the gun head 102 and the clip 209. After the cover 301 is in place, the controller controls the control motor 204 to start, driving the frame 201 to flip from vertical to horizontal. During the flipping process of the frame 201, as the component of gravity along the central axis 205 of the slide 206 gradually decreases, the constant tension of the constant force spring 208 gradually becomes dominant. When the frame 201 flips to the horizontal state, the constant tension of the constant force spring 208 is greater than the sum of the sliding friction between the slide 206 and the central axis 205 and the winding friction resistance of the cable 101. Under the pull of the constant force spring 208, the slide 206 slides along the central axis 205 away from the body 1 until it reaches the limit stop ring and stops. At this time, the through ring 207 is located at the farthest end of the central axis 205, and the cable 101 is supported by the through ring 207 and kept off the ground.

[0087] During the charging phase: The user removes the charging head 102 from the clip 209, pulls the cable 101, and plugs the charging head 102 into the charging port of the electric vehicle. As the user holds the charging head 102 and pulls the cable 101 outward, the cable 101 applies a pulling force towards the body 1 to the slide block 206 through the through-ring 207, causing the slide block 206 to slide along the central axis 205 towards the body 1, thereby releasing a section of the cable 101. This prevents the cable 101 from being overly taut and bearing excessive axial tensile stress, and prevents the cable 101 from bending or its internal wires from breaking.

[0088] When the user stops pumping or the pumping speed slows down, the constant tension of the constant force spring 208 dominates, pulling the slide block 206 to slide away from the body 1, and tightening the cable 101 again, so that the section of cable 101 between the loop 207 and the gun head 102 maintains appropriate tension, preventing the cable 101 from slack off and touching the ground.

[0089] Through the sliding of the slide block 206 and the automatic tensioning of the constant force spring 208, the cable 101 remains suspended and subjected to reasonable force during the pulling process, so that it will not be damaged due to excessive tension or drag on the ground due to slack.

[0090] During charging: During the charging process, the winding spring 105 continuously applies a retraction force to the cable 101, and the constant force spring 208 continuously applies a pulling force to the slide 206 in the direction away from the body 1. The two achieve dynamic balance in the tension of the cable 101. The cable 101 remains taut but not excessively straight. The section of the cable 101 between the loop 207 and the gun head 102 maintains a suspended curve shape, with the lowest point stably higher than the ground. Due to the existence of the suspended curve, there is no continuous axial pull-out force between the gun head 102 and the vehicle charging port, avoiding additional load on the vehicle charging port locking mechanism.

[0091] Charging complete: The user presses the unlock button on the gun head 102 and pulls the gun head 102 out of the vehicle's charging port. At this time, the winding spring 105 releases its stored energy, driving the drum 104 to rotate and rewind the cable 101 onto the drum 104. Simultaneously, the user snaps the gun head 102 back into the clip 209. After the gun head 102 is snapped into place, the controller controls the control motor 204 to rotate in the opposite direction, driving the frame 201 to flip from horizontal to vertical and return to its original position. After the frame 201 returns to its original position, the controller controls the lifting drive component 303 to drive the cover 301 to descend to its lowest position, covering the gun head 102 and the clip 209 again, returning to the initial state.

[0092] Throughout the charging process, due to the constant tension of the constant force spring 208 and the lifting support of the cable 101 by the through-ring 207, the cable 101 always remains in a non-contact state with the ground, effectively avoiding safety hazards such as wear, insulation damage and leakage caused by dragging and friction of the cable 101 on the ground, significantly improving the safety of the charging pile and the service life of the cable 101.

[0093] All standard parts used in this application can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0094] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the application. Various changes and modifications can be made without departing from the spirit and scope of this application, and all such changes and modifications fall within the scope of the claims. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. An AC / DC integrated charging pile, characterized in that, include: The machine body (1) is provided with a winding component inside the machine body (1); The cable (101) has one end connected to the inside of the body (1) via a winding component, and the other end connected to the gun head (102). The support assembly (2) includes a frame (201) rotatably mounted on the side of the body (1), a central shaft (205) is mounted in the frame (201), a slide block (206) is slidably mounted on the central shaft (205), and a through ring (207) is provided on the side of the slide block (206) near the body (1). The cable (101) is wound at least once around the central shaft (205) and passes through the loop (207); A constant force spring (208) is also provided between the slide (206) and the top of the frame (201).

2. The AC / DC integrated charging pile according to claim 1, characterized in that: The opposite sides of the slide block (206) slide against the inner walls of the opposite sides of the frame (201). Two constant force springs (208) are provided, and the two constant force springs (208) are symmetrically connected to the opposite sides of the slide block (206).

3. The AC / DC integrated charging pile according to claim 1, characterized in that: The constant tension of the constant force spring (208) is greater than the sum of the sliding friction between the slide (206) and the central shaft (205) and the frictional resistance generated by the cable (101) winding on the central shaft (205).

4. The AC / DC integrated charging pile according to claim 1, characterized in that: The inner diameter of the loop (207) is larger than the outer diameter of the cable (101) and smaller than the minimum radial dimension of the gun head (102); The axis of the through-ring (207) is perpendicular to the axis of the central axis (205).

5. The AC / DC integrated charging pile according to claim 1, characterized in that: The bottom of the frame (201) is provided with a rotating base (202), and the side of the body (1) is equipped with a control motor (204) and a motor base (203). The rotating base (202) is installed in the motor base (203) and is fixedly connected to the output shaft of the control motor (204).

6. The AC / DC integrated charging pile according to claim 5, characterized in that: The machine body (1) is also equipped with a controller, which is electrically connected to the control motor (204); when the frame (201) is flipped to a horizontal state, the constant force spring (208) pulls the slide (206) to slide away from the machine body (1).

7. The AC / DC integrated charging pile according to claim 1, characterized in that: The winding component includes a bearing seat (103) disposed inside the machine body (1), a drum (104) is rotatably sleeved on the bearing seat (103), and one end of the cable (101) extending into the machine body (1) is wound around the drum (104); The drum (104) is also equipped with winding springs (105) on opposite sides for driving the drum (104) to rotate and retract the cable (101).

8. The AC / DC integrated charging pile according to claim 1, characterized in that: A clip (209) is also installed on the top of the frame (201) facing the body (1), and a hard sleeve that cooperates with the clip (209) is provided at the bottom of the gun head (102). The clip (209) includes a flexible clamp rod bent into a semi-circular shape. The opening distance of the flexible clamp rod is smaller than the diameter of the hard sleeve at the bottom of the gun head (102). The gun head (102) is engaged in the clip (209) by the interference fit between the hard sleeve and the flexible clamp rod.

9. The AC / DC integrated charging pile according to claim 1, characterized in that: It also includes a protective component (3), which includes a shield (301) that is slidably mounted on the side of the body (1) along the height direction of the body (1) and covers the periphery of the gun head (102).

10. The AC / DC integrated charging pile according to claim 9, characterized in that: The side of the body (1) is also equipped with a guide groove (302) arranged along its height direction. The protective cover (301) is slidably disposed in the guide groove (302). The end of the protective cover (301) away from the ground is also equipped with a lifting drive component (303).

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