Dual-mode single-motor rack drive lifting wireless charging device

Abstract

This invention relates to the field of wireless charging equipment technology, and discloses a dual-mode single-motor rack and pinion driven lifting wireless charging device, including an assembly plate. The assembly plate is provided with a lifting coil and a sliding coil. The lifting coil is connected to the assembly plate through a vertical lifting structure, and the sliding coil is connected to the assembly plate through a horizontal sliding structure. The upper part of the assembly plate is provided with a charging position corresponding to the wireless charging device. The horizontal sliding structure drives the sliding coil to move laterally within the assembly plate, and is driven by a transmission module. The power of the transmission module is transmitted between the horizontal sliding structure and the vertical lifting structure through a linkage gear set. The transmission module has only one drive motor.

Description

Technical Field

[0001] This invention relates to the field of wireless charging equipment technology, specifically a dual-mode single-motor rack and pinion drive lifting wireless charging device. Background Technology

[0002] Wireless charging technology, due to its ease of use, has been widely applied to charging scenarios for mobile phones and other electronic devices. Currently, devices supporting wireless charging mainly fall into two categories: one is magnetic charging devices with integrated magnetic rings, compatible with the MPP (Magnetic Power Profile) protocol, which achieve precise charging docking through magnetic attraction with the wireless charger's internal structure; the other is non-magnetic charging devices without magnetic rings, compatible with the EPP (Extended Power Profile) protocol. In this type, the wireless charger needs to move the charging coil through an internal mechanical structure to match and couple with the receiving coil of the device being charged. To be compatible with these two charging modes, existing wireless chargers require two corresponding charging structures and independent mechanical drive mechanisms internally. However, the addition of these structures and independent modules not only inevitably causes friction between the internal mechanical structures during charging mode switching but also leads to collisions of internal parts when the device is shaken, resulting in vibration and noise. Therefore, existing wireless chargers typically only have a single charging mode, reducing vibration and noise by simplifying the internal structure.

[0003] For fixed installations like those in vehicles, where frequent relocation is not possible, wireless chargers need to be compatible with both magnetic and non-magnetic charging modes, and must be able to operate independently in both modes. Existing wireless chargers with built-in dual charging modes generally employ a linkage-based transmission scheme. This scheme requires the magnetic charging coil to descend vertically when the non-magnetic charging mode is activated, while simultaneously driving the non-magnetic charging coil to move laterally. This structural design not only significantly increases the number of internal parts and assembly complexity, but also, under the continuous vibration conditions of long-term vehicle operation, the noise and vibration of the device will be much higher than in conventional use scenarios. This makes the original noise control and vibration suppression methods unable to meet the stringent requirements of in-vehicle use. If a dual-motor drive for two sets of coils is adopted to achieve independent mode control, it will further increase the number of drive components and structural complexity, which will not only exacerbate the vibration and noise problems of the device, but also increase the production cost and failure rate of the device. Therefore, adopting a dual-mode transmission structure driven by a single motor is the core solution that balances dual-mode compatibility, structural simplification, low vibration and low noise performance, and the requirement for independent mode control. It is also a key direction to solve the pain points of existing dual-mode wireless chargers in in-vehicle applications.

[0004] Meanwhile, most vehicles require two charging devices to be installed side by side to accommodate the simultaneous charging needs of the driver and passenger. After adding a transmission structure for switching coils, the overall size of the device will increase significantly. Since the width between the driver and passenger seats is not generous in most vehicles, a transmission structure that can not only switch coils but also does not significantly increase the width of the charging device is needed to adapt to most vehicles on the market and expand the market. Summary of the Invention

[0005] (I) Technical problem to be solved: In view of the shortcomings of the existing technology, the present invention provides a dual-mode single-motor rack and pinion transmission lifting wireless charging device, which has the advantages of two motion modes with a single motor drive, and solves the problem that the increase in the space occupied by the two transmission modes leads to the addition of parts structure.

[0006] (II) Technical Solution: To achieve the above-mentioned single-motor drive two-structure motion mode objectives, the present invention provides the following technical solution: A dual-mode single-motor rack and pinion transmission lifting wireless charging device, comprising an assembly plate, wherein a lifting coil and a sliding coil are provided on the assembly plate, the lifting coil is connected to the assembly plate through a vertical lifting structure, and the sliding coil is connected to the assembly plate through a horizontal sliding structure, wherein a charging position corresponding to the wireless charging device is provided on the upper part of the assembly plate, the horizontal sliding structure drives the sliding coil to move laterally within the assembly plate, the transmission module has only one drive motor, the horizontal sliding structure has a straight tooth segment, the straight tooth segment is a rack set on one side of the horizontal sliding structure, and is connected to the output end of the transmission module for transmission, the power output by the transmission module drives the horizontal sliding structure to move, the horizontal sliding structure and the vertical lifting structure transmit the power of the transmission module through a linkage tooth, the extension direction of the straight tooth segment is consistent with the movement direction of the horizontal sliding structure, the transmission module and the linkage tooth group are both arranged on the assembly plate, and are located on the same side of the assembly plate as the straight tooth.

[0007] The assembly plate is externally fixedly fitted with an upper shell and a lower shell, which are fastened together as a single unit.

[0008] The assembly plate is provided with slide rails on both sides. The horizontal sliding structure includes slide rails and sliding brackets. The sliding coil is assembled on the sliding bracket. The sliding bracket is provided with horizontal sliding grooves on both sides corresponding to the slide rails. The horizontal sliding grooves are slidably connected to the slide rails. The sliding bracket drives the sliding coil to move laterally along the slide rails.

[0009] The transmission module includes a gear set, a worm gear, and a drive motor. The transmission module is mounted on the assembly plate and inside the sliding bracket. The inner side of the sliding bracket is provided with a straight tooth section parallel to the slide rail. The straight tooth section is driven by the worm gear through the gear set. The worm gear is mounted on the drive motor.

[0010] The gear set consists of two vertically coaxial upper gears and a lower worm gear. The upper gears mesh with a spur gear section, and the lower worm gear meshes with a worm. The gear set is rotatably mounted on the mounting plate through an axial through hole and a transition shaft. The gear set and the drive motor are mounted on a transmission bracket, which is fixed to the mounting plate.

[0011] The vertical lifting structure includes a lifting bracket and lifting transmission gears. The lifting coil is mounted on the lifting bracket and is driven by the lifting bracket to lift. The lifting transmission gears are arranged perpendicularly to the assembly plate. The linkage gear group meshes with the lifting transmission gears. The lateral sliding structure meshes with the linkage gear group. The linkage gear group is fixed on the assembly plate and can rotate. Through the rotation of the linkage gear group, the lifting transmission gears drive the lifting bracket and the lifting coil to perform lifting movements.

[0012] The worm gear is arranged parallel to the slide rail. The output end of the transmission module is coaxially fixed to the worm gear. The output shaft of the drive motor is connected to the worm gear to drive the worm gear to rotate around its own axis. The linkage gear set includes a worm wheel for linkage with the worm gear and a lifting gear that meshes with the lifting transmission gear. The lifting transmission gear adopts a spur rack structure. The worm wheel and the lifting gear in the linkage gear set are axially perpendicular and are connected by a traditional transmission structure. The worm gear meshes with the horizontal transmission gear and is driven to rotate by rotation. The horizontally rotating gear meshes with the vertical transmission gear, and the lifting transmission gear meshes with the vertical transmission gear.

[0013] The drive motor and the linkage gear set are respectively arranged on both sides of the lifting bracket, and the length of the worm gear is greater than the diameter of the lifting coil.

[0014] The vertical lifting structure includes a lifting bracket and a rotating movable frame. The lifting coil is mounted on the lifting bracket and is driven by the lifting bracket to lift and lower. The rotating movable frame is located below the lifting bracket, and the lifting bracket and the rotating movable frame are matched with the shape of the coil. The bottom of the rotating movable frame is provided with lifting transmission teeth, which mesh with the linkage gear group. The lifting transmission teeth are arranged around the bottom side of the rotating movable frame, so that the rotating movable frame rotates horizontally and drives the lifting bracket to lift and lower vertically.

[0015] The spur gear segment is constantly meshed with the upper gear and simultaneously with the linkage gear set.

[0016] The linkage gear assembly consists of linkage column teeth and linkage disc teeth. The linkage gear assembly is rotatably mounted on the mounting plate. The linkage column teeth have the same height as the gear set and are columnar in shape. They consist of two vertically coaxial gears. The upper part of the linkage column teeth meshes with the spur tooth section, and the lower part meshes with the linkage column teeth. The tooth width of the linkage disc teeth is the same as that of the lifting transmission teeth, and they maintain constant meshing with the linkage column teeth and the lifting transmission teeth.

[0017] Above the rotating movable frame is a lifting movable frame of a matching shape. The lifting movable frame is fixedly connected to the lifting support, and the lifting support is equipped with a rotation limiter. The lifting movable frame and the rotating movable frame are respectively provided with the same number of lifting frame inclined sides and rotating frame inclined sides on their sides. The lifting frame inclined sides and rotating frame inclined sides are arranged in a circumferential array around the center of the lifting movable frame and the rotating movable frame. When the rotating movable frame rotates, it drives the rotating frame inclined sides to rotate. The inclined surface of the rotating frame inclined side matches the inclined surface of the lifting frame inclined side. When the rotating movable frame drives the rotating frame inclined side to contact the lifting frame inclined side, the inclined surface of the lifting frame inclined side rises along the inclined surface of the rotating frame inclined side. The lifting frame inclined side drives the lifting movable frame and the lifting support to move vertically upward. When the rotating movable frame rotates in the opposite direction, the inclined surface of the lifting frame inclined side descends along the inclined surface of the rotating frame inclined side. Affected by the rotation limiter, the lifting movable frame and the lifting support move vertically downward.

[0018] The assembly plate is provided with a beveled edge slot for placing the beveled edge of the lifting frame in the non-rising state.

[0019] The assembly plate has mounting holes for the rotating movable frame on the lifting coil. The rotating movable frame can be rotatably installed in the holes. A limiting ring is provided between the rotating movable frame and the lifting movable frame, and the limiting ring vertically limits the rotating movable frame.

[0020] The inner wall of the mounting hole on the assembly plate is provided with a protruding buckle, and the contact position between the limiting ring and the wall of the mounting hole on the assembly plate is provided with a matching notch. When the limiting ring is aligned and pressed down, the buckle engages with the notch to limit the movement.

[0021] (III) Beneficial Effects: Compared with the prior art, the present invention provides a dual-mode single-motor rack and pinion drive lifting wireless charging device, which has the following beneficial effects: 1. This dual-mode single-motor rack and pinion wireless charging device uses a transmission module to output power to drive a lateral sliding structure. The lateral sliding structure and the vertical lifting structure are connected by a linkage gear that transmits power to the transmission module. The straight tooth segment extends in the same direction as the lateral sliding structure. The transmission module and linkage gear are both mounted on an assembly plate, located on the same side as the straight teeth. This allows the assembly plate to reduce the space on the side without the transmission module and linkage gear, thus reducing the overall width of the device and making the charging device more slender. This solves the problem of traditional transmission structures requiring a large space and being unable to accommodate a large number of vehicles. A highly integrated mechanical transmission structure enables precise control of two independent charging modes (lifting mode and sliding mode) by a single drive motor. Through the worm gear and gear set in the transmission module, the rotational power of the single drive motor is simultaneously and controllably distributed to the lateral sliding structure and the vertical lifting structure. The sequential linkage of the two movements is achieved through a linkage gear set. When a mode switch is required, the sliding bracket moves smoothly laterally along the slide rail under the meshing drive of the gear set and the spur gear section. Simultaneously, the linkage gear set transmits power to the lifting coil, causing it to automatically descend and avoid the sliding coil when it approaches, making way for the sliding coil to charge. Conversely, when the sliding coil returns... When retracting, the lifting coil rises and resets synchronously, ready to take over the charging task. This not only completely abandons the traditional approach of equipping the two movements with independent drive sources, significantly reducing the number of motors and corresponding control circuits, lowering costs and system complexity, but more importantly, it ensures absolutely synchronized and reliable timing between the two movements, avoiding the risk of mechanical interference and collisions that may be caused by electrical control delays or errors. In the entire transmission path, the self-locking characteristics of the worm gear and worm wheel naturally provide the lifting coil and sliding coil with the ability to maintain their position when the power is off, ensuring the stability of the coil position under working or vibration environments without the need for additional locking mechanisms; while the spur gear Details such as the parallel arrangement of the sections and slide rails and the coaxial double-linked structure of the gear set ensure smooth and efficient power transmission, making full use of the driving force of a single motor and reducing energy loss during transmission. With its ingenious single-motor linkage mechanism, the device achieves dual-mode wireless charging in a compact space while maximizing structural reliability, reducing manufacturing costs and operating energy consumption, and improving the overall quietness and service life of the device. It provides a highly valuable solution for the integrated and intelligent design of wireless charging devices. Furthermore, the entire transmission process uses a gear meshing structure, which results in less friction noise compared to other transmission methods.

[0022] 2. This dual-mode single-motor rack and pinion wireless charging device utilizes a rigid, backlash-free transmission link formed by a constant meshing between the integrally formed vertical lifting transmission teeth on the side wall of the lifting bracket and the linkage gear assembly. When the lateral sliding structure transmits power through the linkage gear assembly, since the lifting transmission teeth are not fixed to the mounting plate, their meshing with the linkage gear assembly directly drives the lifting bracket to rise and fall. This "stop-and-go" direct drive method ensures that the vertical movement of the lifting coil and the horizontal movement of the sliding coil are completely determined by the same mechanical transmission ratio in terms of time and stroke, achieving absolute synchronization at the physical level. This not only eliminates the need for complex electronic synchronization control logic, completely eradicating the potential for incoordination caused by electrical delays or errors, but also avoids the risk of mechanical interference due to timing discrepancies. The alternating motion of the two coils during charging position switching is as smooth and precise as a precise clock gear. In terms of motion guidance and stability, and structural integration and reliability, the integrated design of the lifting transmission gear and lifting bracket eliminates the gaps and looseness that may exist in traditional separate connections, significantly improving the structural strength and deformation resistance of the transmission components. This means that during long-term, frequent mode switching, the structure can resist the impact and fatigue from transmission loads, avoiding lifting stroke deviations or transmission failures caused by deformation. Furthermore, this highly integrated design reduces the number of parts, simplifies the assembly process, and allows the entire lifting mechanism to be embedded in the assembly plate in a very compact manner, contributing to improved overall durability and environmental adaptability. This vertical lifting structure also brings system-level simplification and efficiency improvement. Since all lifting movements are powered by the same drive motor and transmitted through the linkage gear set, the device does not require separate motors, sensors, or control circuits for the lifting coils. This minimalist drive solution not only reduces manufacturing costs and system electrical complexity but also minimizes potential failure points. Simultaneously, the worm gear's self-locking characteristic, which may exist in the transmission chain, ensures the lifting coil remains securely at a designated height even in power-off or standby mode, eliminating the need for additional locking mechanisms. This achieves multi-functional switching while further optimizing energy consumption and improving the overall quietness and lifespan of the machine.

[0023] 3. This dual-mode single-motor rack and pinion wireless charging lifting device utilizes a linkage gear set composed of a worm gear and a bevel gear group to achieve a 90-degree transmission direction conversion. This precisely converts the horizontal rotational motion output by the drive motor into the vertical linear motion driving the lifting bracket, thus achieving the linkage effect of a single drive motor simultaneously driving the horizontal sliding structure and the vertical lifting structure. This eliminates the need for an additional independent lifting drive component, significantly simplifying the device's transmission structure. Furthermore, the bevel gear transmission features stable transmission ratio, high transmission efficiency, and strong load-bearing capacity. Combined with the self-locking characteristics of the worm gear, it ensures complete synchronization between the lifting action and the horizontal displacement action, preventing mode switching failures or structural collisions caused by timing deviations. It also allows for reliable locking at any lifting position, enhancing the device's operational stability. On the other hand, the design of the worm gear simultaneously meshing with the gear set and the linkage gear set ensures that the power input of the two transmission branches is completely synchronized, guaranteeing the synchronicity of the two moving structures from the root. This eliminates the need for additional position detection and synchronization control algorithms, further simplifying the electrical control system of the device and reducing production costs and failure rates. Simultaneously, the parallel layout of the worm gear and slide rail ensures that the power input direction is completely consistent with the movement direction of the sliding bracket, fundamentally eliminating the additional lateral force that may be generated by transmission angle deviation. This makes the mechanical model of the entire transmission system purer and its operation smoother. The drive motor and linkage gear set are respectively arranged on both sides of the lifting bracket; this detail embodies profound engineering wisdom. It not only cleverly balances the overall center of gravity of the device, avoiding the torsional deformation or installation stress of the mounting plate caused by the concentration of power components on one side, thus ensuring the geometric accuracy of all guide rails and slides; more importantly, this symmetrical layout provides ample space for the moving components, ensuring that the vertical movement of the lifting bracket and the horizontal movement trajectory of the sliding bracket do not interfere with each other, allowing the two movements to run smoothly and in parallel within a compact cavity. In addition, the worm gear, which is specially designed to be longer than the diameter of the coil, ensures that the worm gear can maintain a stable engagement with the lower worm wheel and the linkage gear set throughout the entire stroke, no matter which end of the travel the sliding bracket is at or what height the lifting bracket is at. This provides a complete travel guarantee for the lateral displacement of the sliding coil, while allowing the equipment to be designed to be narrower in the width direction, significantly saving valuable installation space.

[0024] 4. This dual-mode single-motor rack and pinion drive lifting wireless charging device uses the horizontal linear motion of the sliding bracket through its integrally formed straight tooth section, which serves as the power source for two transmission branches. One branch directly drives the gear set of the transmission module, providing continuous meshing thrust for the sliding coil's forward movement. The other branch drives the linkage pinion, opening the power link to the lifting mechanism. As a double gear, the linkage pinion converts the received horizontal linear motion into its own rotation, and through the constantly meshing linkage disc teeth, smoothly transmits the power to the lifting transmission teeth at the bottom of the rotating frame. Ultimately, this drives the rotating frame to generate a horizontal circumferential rotation, which in turn drives the upper lifting bracket and coil to rise and fall vertically. This series of energy and motion transformations involving "linear motion, rotation, and lifting" is entirely accomplished by a compact gear system, achieving precise coupling of multi-degree-of-freedom motion. The linkage gear assembly uses a combination of linkage spur teeth and linkage disc teeth. The linkage spur teeth are coaxial double cylindrical gears, which cleverly integrate the two functions—meshing with the spur section and meshing with the linkage disc teeth—that originally required two separate gears, into one component. This significantly reduces the axial space occupied by the transmission system. The vertical height of the linkage spur teeth is designed to be completely consistent with the gear set of the transmission module. This ensures that the spur section of the sliding bracket can be at the same horizontal height, while maintaining constant meshing with the transmission gear and the linkage spur teeth. This avoids uneven load torque caused by different meshing point heights, making the tooth surface of the spur section uniformly stressed, significantly reducing tooth surface wear and transmission noise, and extending the life of the transmission system. The linkage disc teeth play a central conversion role here. They maintain constant meshing with both the linkage spur teeth and the lifting transmission teeth of the rotating movable frame, forming a stable triangular transmission layout. This layout not only ensures smooth power transmission and load-bearing capacity, but more importantly, by adjusting the gear ratio (i.e., transmission ratio) between the linkage disc teeth and the linkage column teeth, designers can flexibly match the lateral displacement of the sliding coil with the vertical lifting of the lifting coil. This means that without changing any structural dimensions, simply by selecting different gear parameters, it can be ensured that when the sliding coil moves exactly to the center of the charging position, the lifting coil synchronously descends to the preset minimum clearance position, achieving perfect timing coordination.

[0025] 5. This dual-mode single-motor rack and pinion drive lifting wireless charging device utilizes a multi-point synchronous drive lifting system where the inclined sides of the rotating frame, arranged in a circumferential array on the side of the rotating frame, correspond one-to-one with the inclined sides of the lifting frame on the lifting frame. When the rotating frame rotates circumferentially driven by the linkage gear group, all the inclined sides of the rotating frame rotate synchronously, and their inclined surfaces simultaneously push the corresponding inclined sides of the lifting frame, causing the entire lifting frame to rise. Because the driving force is evenly distributed across the entire circumference of the lifting frame through multiple array points, the off-center torque that may occur with single-point or two-point drive is completely eliminated. This ring-shaped force distribution method ensures that the lifting bracket remains absolutely horizontal during ascent or descent, completely avoiding problems such as jamming, tilting, or swaying caused by uneven force distribution. This ensures that the lifting coil can accurately reach or leave the charging position in the most ideal posture, significantly improving the alignment accuracy and efficiency of wireless charging. The design of multiple sets of inclined surfaces working in sync essentially amplifies the thrust of a single inclined surface in parallel. This layout not only significantly enhances the load-bearing capacity of the entire lifting structure, enabling it to stably support the weight of the lifting coil and its support, but more importantly, it achieves mechanical self-locking through the geometric characteristics of the inclined plane itself. When the lifting frame rises to its highest point, the two sets of horizontal limit stops on the inclined planes fit tightly together, forming a stable horizontal bearing surface. Even if the rotating frame tends to reverse due to vibration or external force, it will be prevented by the planar contact of the horizontal stops, thus ensuring that the lifting coil will not experience any unexpected downward displacement during charging. This purely mechanical position holding method eliminates the need for additional locking mechanisms or motor brakes, further simplifying the structure and improving reliability. By adjusting the inclination angle of the inclined planes, designers can flexibly match the rotation angle of the rotating frame with the vertical lifting range of the lifting frame. A smaller inclination angle provides more precise lifting control and greater self-locking capability, while a larger inclination angle allows for a larger lifting stroke within a smaller rotation angle. This design, which allows adjustment of the motion ratio through a single geometric parameter, gives the device strong adaptability and versatility, easily adapting to different vehicle models or equipment with varying installation spaces and lifting requirements without significant modifications to the main structure. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the housing assembly of the present invention; Figure 2 This is a schematic diagram of the assembly plate assembly according to Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the transmission module in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram showing the vertical limiting structure of the lifting bracket in the top view of Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the assembly plate assembly according to Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of the lifting bracket assembly according to Embodiment 2 of the present invention; Figure 7 This is a schematic diagram of the transmission module in Embodiment 2 of the present invention; Figure 8 This is a schematic diagram of the lifting transmission gear transmission in Embodiment 2 of the present invention; Figure 9 This is a schematic diagram of the lifting and lowering mechanism rising according to Embodiment 2 of the present invention; Figure 10 This is a schematic diagram of the assembly of the rotating movable frame according to Embodiment 2 of the present invention; Figure 11 This is a detailed schematic diagram of the mounting hole buckle structure of the assembly plate in Embodiment 2 of the present invention; Figure 12 This is a schematic diagram of the rotating movable frame structure according to Embodiment 2 of the present invention; Figure 13 This is a schematic diagram of the limiting ring structure in Embodiment 2 of the present invention; Figure 14 This is a schematic diagram of the lifting transmission gear and worm gear transmission in Embodiment 3 of the present invention.

[0027] In the diagram: 1. Assembly plate; 11. Slide rail; 12. Upper housing; 13. Lower housing; 2. Lifting coil; 21. Lifting bracket; 22. Linkage gear assembly; 23. Lifting movable frame; 24. Rotating movable frame; 25. Limiting retaining ring; 211. Lifting transmission gear; 221. Linkage column gear; 222. Linkage disc gear; 231. Lifting frame inclined side; 232. Inclined side slot; 241. Rotating frame inclined side; 3. Sliding coil; 31. Sliding bracket; 311. Transverse groove; 312. Straight tooth section; 4. Transmission module; 41. Gear set; 42. Worm gear; 43. Drive motor; 44. Transmission bracket; 411. Upper gear; 412. Lower worm gear; 413. Transition shaft; Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1 Please see Figures 1-4A dual-mode single-motor rack and pinion drive lifting wireless charging device includes an assembly plate 1. The assembly plate 1 is equipped with a lifting coil 2 and a sliding coil 3. The lifting coil 2 adopts an MPP (Magnetic Power Profile) structure module, while the sliding coil 3 adopts an EPP (Extended Power Profile) structure module. The (Profile) structural module, assembly plate 1, is integrally injection molded from plastic material, and has an overall rectangular flat structure. The lifting coil 2 is connected to the assembly plate 1 via a vertical lifting structure, and the sliding coil 3 is connected to the assembly plate 1 via a horizontal sliding structure. The upper part of the assembly plate 1 has a charging position corresponding to the wireless charging device, i.e., the position of the lifting coil 2. This charging device has two charging modes. The horizontal sliding structure drives the sliding coil 3 to move laterally within the assembly plate 1, and is driven by the transmission module 4. The horizontal sliding structure and the vertical lifting structure transmit the power of the transmission module 4 through the linkage gear group 22. When the sliding coil 3 moves laterally to the position of the lifting coil 2, the charging mode is switched, and the sliding coil 3 moves to the charging position for wireless charging. When the sliding coil 3 moves to the position of the lifting coil 2, the horizontal sliding structure transmits power to the vertical lifting structure through the linkage gear group 22, causing the vertical lifting structure to drive the lifting coil 2 downward. When the sliding coil 3 moves away from the lifting coil 2 via the lateral sliding structure, it transmits power to the vertical lifting structure through the linkage gear group 22, causing the lifting coil 2 to move upward. At this time, the lifting coil 2 is connected to the charging position and wirelessly charged. The transmission module 4 has only one drive motor 43. The lateral sliding structure has a straight tooth segment 312, which is a rack set on one side of the lateral sliding structure and is connected to the output end of the transmission module 4. The transmission module 4 outputs power to drive the lateral sliding structure to move. The extension direction of the straight tooth segment 312 is consistent with the movement direction of the lateral sliding structure. The transmission module 4 and the linkage gear group 22 are both arranged on the assembly plate 1 and are located on the same side of the assembly plate 1 as the straight tooth segment 312. This allows the assembly plate 1 to reduce the space on the side where the transmission module 4 and the linkage gear group 22 are not set, thus reducing the overall width of the device. That is, the non-straight tooth segment 312 is set on the side. See reference. Figure 2 The side with a relatively short length.

[0030] The assembly plate 1 has horizontally arranged slide rails 11 on both sides. In this embodiment, the slide rails 11 are slide rods, and are made of plastic or metal round rods. The two ends of the slide rails 11 are press-fitted to both sides of the assembly plate 11, and the central axes of the two slide rails 11 are located on the same horizontal plane. The horizontal sliding structure includes slide rails 11 and sliding brackets 31. The sliding brackets 31 are U-shaped frame structures. The sliding coil 3 is assembled on the sliding brackets 31. The support arms on both sides of the sliding brackets 31 are provided with horizontal sliding grooves 311 corresponding to the slide rails 11. The horizontal sliding grooves 311 are through holes. The inner diameter of the groove 311 is slightly larger than the outer diameter of the slide rail 11. A self-lubricating polytetrafluoroethylene (PTFE) bushing is embedded in the inner wall of the transverse groove 311. The slide rail 11 passes through the transverse groove 311. When switching between wireless charging modes, the sliding bracket 31 moves laterally along the slide rail 11, driving the sliding coil 3 to move laterally. The slide rail 11 acts as a track. A straight tooth section 312 parallel to the slide rail 11 is provided on the inner side of the transverse support arm of the sliding bracket 31. The straight tooth section 312 is integrally formed with the sliding bracket 31 and engages with the straight tooth section 312 via the transmission module 4, driving the sliding bracket 31 to move laterally along the slide rail 11. 1. The tooth direction of the straight tooth segment 312 is parallel to the central axis of the slide rail 11. The length of the straight tooth segment 312 matches the lateral displacement stroke of the sliding coil. The slide rail 11 has stops at both ends for limiting the sliding bracket 31. On the one hand, the parallel arrangement of the double slide rails 11 can provide stable guiding support for the lateral displacement of the sliding bracket 31, avoiding the problem of swaying or jamming of the sliding bracket 31 during movement, ensuring that the sliding coil 3 can be accurately moved to the charging position, and realizing stable switching of the charging mode. The setting of the self-lubricating bushing can reduce the friction between the slide rail 11 and the sliding bracket 31. The sliding friction resistance between them reduces the load on the drive motor 43, while also reducing noise and component wear during operation, thus extending the service life of the device. On the other hand, the parallel arrangement of the spur tooth section 312 and the slide rail 11 ensures that the meshing transmission between the transmission module 4 and the spur tooth section 312 is always in a stable state, avoiding tooth skipping or tooth loss caused by transmission angle deviation. The setting of the limit stop can limit the maximum displacement stroke of the sliding bracket 31, preventing structural collision damage caused by excessive displacement of the sliding coil 3, while ensuring the precise positioning of the coil when switching between the two charging modes.

[0031] See Figure 3The transmission module 4 includes a gear set 41, a worm gear 42, and a drive motor 43. The gear set 41 and the drive motor 43 are mounted on a transmission bracket 44, which is fixed to the bottom wall of the mounting plate 1. The transmission bracket 44 is integrally injection molded from insulating engineering plastic material. A motor slot for mounting the drive motor 43 is pre-drilled on the transmission bracket 44, and the body of the drive motor 43 is fixedly mounted in the motor slot. The transmission module 4 is located on the mounting plate 1 and inside the sliding bracket 31. The spur gear 312 meshes with the worm gear 42 through the gear set 41. The worm gear 42 is mounted on the drive motor 43. The gear set 41 consists of two vertically coaxial upper gears 411 and a lower worm gear 412. The upper gear 411 and the lower worm gear 412 are integrally injection molded coaxial double gear structures with their rotation center axes completely overlapping, thus ensuring the accuracy of the transmission ratio and the synchronization of the transmission process. The upper gear 411 is a standard involute spur gear that maintains constant meshing with the spur section 312. The lower worm gear 412 is a worm gear structure adapted to the helix angle of the worm 42 and maintains constant meshing with the worm 42. The gear set 41 is rotatably mounted on the mounting plate 1 through an axial through hole and a transition shaft 413. The transition shaft 413 is a vertically arranged No. 45 steel shaft, the bottom end of which is press-fitted into the bearing seat of the transmission bracket 44, and the top end passes through the mounting through hole of the gear set 41, thereby realizing the free rotation of the gear set 41 around the transition shaft 413.

[0032] See Figures 2-3 The vertical lifting structure includes a lifting bracket 21 and a lifting transmission gear 211. The lifting coil 2 is mounted on the lifting bracket 21 and is driven by the lifting bracket 21 to lift. The lifting bracket 21 is provided with a rotation limit. Two vertical limit slides are machined on the assembly plate 1 and are symmetrically arranged on both sides of the lifting bracket 21. (See reference...) Figure 4 The lifting bracket 21 is equipped with vertical slide bars corresponding to the vertical slide rails. These vertical slide bars can move vertically through the gaps in the limiting slide rails and restrict horizontal movement and rotation. The lifting transmission gear 211 is a standard involute spur rack structure, integrally formed on the side wall of the lifting bracket 21, and is vertically positioned relative to the mounting plate 1. Its tooth direction is completely perpendicular to the upper surface of the mounting plate 1, and its tooth length perfectly matches the designed vertical lifting stroke of the lifting coil 2. The linkage gear group 22 maintains constant meshing with the lifting transmission gear 211, and the lateral sliding structure maintains constant meshing with the linkage gear group 22. The linkage gear group 22 is rotatably mounted on the mounting plate 1 via a fixed pin, thereby ensuring the positional stability of the linkage gear group 22 during rotation. When the lateral sliding structure transmits power to the vertical lifting structure through the rotation of the linkage gear group 22, refer to... Figure 3Because the lifting transmission gear 211 meshes with the linkage gear group 22, the lifting transmission gear 211 is not fixed to the assembly plate 1, allowing it to move upward relative to the assembly plate 1 and drive the lifting bracket 21 and the lifting coil 2 to move up and down. The integral structure of the lifting transmission gear 211 and the lifting bracket 21 ensures the structural strength during the transmission process and avoids deviation in the lifting stroke caused by transmission deformation. At the same time, the synchronous transmission of power through the linkage gear group 22 ensures that the lifting action of the lifting coil 2 and the lateral displacement action of the sliding coil 3 are completely synchronized, eliminating the need for an additional independent drive and control structure, further simplifying the overall structure of the device and reducing the control difficulty. The inner wall of the assembly plate 1 has an integrally formed vertical guide groove that matches the shape of the lifting bracket 21. The two sides of the lifting bracket 21 are respectively fitted into the vertical guide groove, thus providing full-range guidance and limit for the lifting action of the lifting bracket, avoiding the problem of swaying and misalignment during the lifting process. The limit structure can adopt a conventional setting, which will not be described in detail here.

[0033] See Figures 2-3 The worm gear 42 is arranged parallel to the slide rail 11. The output end of the transmission module 4 is coaxially fixed to the worm gear 42. The output shaft of the drive motor 43 is connected to the worm gear 42 to drive the worm gear 42 to rotate around its own axis. The linkage gear set 22 includes a worm wheel for linkage with the worm gear 42 and a lifting gear for meshing and driving with the lifting transmission gear 211. The lifting transmission gear 211 adopts a spur rack structure. The worm wheel and the lifting gear in the linkage gear set 22 are designed to be axially perpendicular and are connected by a traditional transmission structure (not shown in the figure). (Drawn in volume) In specific design, the worm gear and the lifting gear can be vertically connected by a bevel gear set with axially perpendicular tooth surfaces meshing. The bevel gear set includes a first bevel gear and a second bevel gear meshing with each other. The first bevel gear is coaxially and fixedly connected to the worm gear, and the two rotate synchronously. The second bevel gear is coaxially and fixedly connected to the lifting gear, and the two rotate synchronously. The axis of the first bevel gear and the axis of the second bevel gear are perpendicular to each other, so as to realize the transmission of rotational motion between intersecting axes and accurately convert the horizontal rotational motion into the vertical rotational motion.

[0034] When the drive motor 43 drives the worm 42 to rotate, the worm 42 simultaneously forms two independent and synchronous transmission branches: First, the worm 42 meshes with the gear set 41 corresponding to the transverse sliding structure. Through the meshing transmission of the gear set 41 and the spur tooth section 312, the transverse sliding structure is driven to move laterally along the slide rail 11, thereby realizing the lateral position adjustment of the sliding coil 3 in the assembly plate 1; Second, the worm 42 meshes with the worm wheel of the linkage gear set 22, driving the worm wheel to rotate synchronously. The worm wheel drives the coaxially fixed first bevel gear to rotate synchronously. Through the meshing and reversal of the first bevel gear and the second bevel gear, the horizontal rotational motion is converted into the vertical rotational motion. Then, through the second bevel gear, the coaxially fixed lifting gear is driven to rotate synchronously. The lifting gear meshes with the vertically arranged lifting transmission gear 211, converting the rotational motion into vertical linear motion, driving the lifting transmission gear 211 to move upward or downward in a linear motion, thereby realizing the synchronous lifting of the lifting coil 2. The linkage gear set 22, composed of a worm gear and a bevel gear set, can achieve a 90-degree transmission direction conversion, accurately converting the horizontal rotational motion output by the drive motor 43 into the vertical linear motion that drives the lifting bracket 21 to rise and fall. This achieves the linkage effect of a single drive motor 43 simultaneously driving the horizontal sliding structure and the vertical lifting structure, eliminating the need for an additional independent lifting drive component and greatly simplifying the transmission structure of the device. At the same time, the bevel gear transmission has the characteristics of stable transmission ratio, high transmission efficiency, and strong load-bearing capacity. Combined with the self-locking characteristics of the worm gear, it can ensure complete synchronization between the lifting action and the horizontal displacement action, avoiding the problems of mode switching failure or structural collision caused by action timing deviation. It can also achieve reliable locking at any lifting position, improving the stability of the device operation. On the other hand, the design of the worm gear 42 meshing with both the gear set 41 and the linkage gear set 22 ensures that the power input of the two transmission branches is completely synchronized, thus guaranteeing the synchronicity of the two moving structures from the source. This eliminates the need for additional position detection and synchronization control algorithms, further simplifying the electrical control system of the device and reducing its production cost and failure rate. At the same time, the parallel arrangement of the worm gear 42 and the slide rail 11 ensures that the transmission direction of the two transmission branches is always consistent, avoiding transmission interference. Furthermore, the transmission module 4 and the linkage gear set 22 can be concentrated on the same side of the assembly plate 1 where the spur section 312 is located, effectively reducing the overall width of the assembly plate 1 and optimizing the overall layout of the device.

[0035] Example 2 See Figures 5-9In this embodiment, the vertical lifting structure and the linkage gear group 22 differ from those in Embodiment 1, while other undescribed structures are the same as in Embodiment 1. The vertical lifting structure includes a lifting bracket 21 and a rotating movable frame 24. The lifting coil 2 is mounted on the lifting bracket 21 and is driven by the lifting bracket 21 to move up and down. The lifting bracket 21 is a tray-type structure that perfectly matches the shape of the lifting coil 2, and its upper surface has a positioning groove that matches the contour of the lifting coil 2. The bottom of the rotating movable frame 24 is provided with lifting transmission gears 211. The rotating movable frame 24 is located below the lifting bracket 21, and the lifting bracket 21 and the rotating movable frame 24 together form a ring structure that matches the shape of the coil. The lifting transmission gears 211 and the linkage gear group... 22 meshes, thereby driving the rotating movable frame to rotate horizontally through the power transmitted by the linkage gear 22. The lifting transmission gear 211 is arranged around the bottom side of the rotating movable frame 24, causing the rotating movable frame 24 to rotate horizontally and driving the lifting bracket 21 to rise and fall vertically. The straight tooth segment 312 is integrally formed on the inner support arm of the sliding bracket. It is a continuous involute straight tooth rack structure. Its tooth length completely covers the entire stroke range of the sliding coil 3. While the straight tooth segment 312 maintains constant meshing with the upper gear 411 of the transmission module 4, its tooth surface also maintains constant meshing with the input end gear of the linkage gear 22. In this way, the driving power is synchronously transmitted to the transmission module 4 and the linkage gear 22 through the lateral displacement of the sliding bracket 31.

[0036] See Figures 6-8The linkage gear set 22 consists of linkage spur gears 221 and linkage disc gears 222. The linkage gear set 22 is rotatably mounted on the mounting plate 1 and is an overall vertically coaxial double cylindrical gear structure. The upper spur gear and the lower transmission gear are integrally formed coaxially, with their rotational axes completely overlapping to ensure the accuracy of the transmission ratio and the synchronization of the transmission process. The overall vertical height of the linkage spur gear 221 is consistent with the vertical height of the gear set 41 of the transmission module 4, ensuring that its upper gear maintains the same meshing height with the spur section 312 of the sliding bracket 31. This ensures that the linkage spur gear 221 and the spur section 312 maintain the same meshing height throughout the entire stroke range of the sliding bracket 31. The constant meshing prevents disengagement or transmission interruption due to lateral displacement. The upper gear of the linkage column tooth 221 is constantly meshed with the spur tooth section 312, and the lower gear meshes with the linkage column tooth 221. The tooth width of the linkage disc tooth 222 is the same as that of the lifting transmission tooth 211. It is rotatably mounted on the mounting plate 1 via a vertically arranged fixed pin. The rotation center axis of the linkage disc tooth 222 is parallel to the rotation center axis of the linkage column tooth 221. One side of the gear teeth of the linkage disc tooth 222 is constantly meshed with the transmission cylindrical gear of the lower part of the linkage column tooth 221, and the other side of the gear teeth is constantly meshed with the lifting transmission tooth 211 at the bottom of the rotating movable frame 24, thereby realizing the reversal and stable transmission of power. By adopting the above structural design, on the one hand, the linkage gear set 22, composed of linkage column teeth 221 and linkage disc teeth 222, can smoothly convert the horizontal linear motion output by the straight tooth section 312 of the sliding bracket 31 into the circumferential rotational motion of the rotating movable frame 24, realizing the reversal and transmission of power. The double-linkage linkage column teeth 221 can simultaneously mesh with the straight tooth section 312 and the linkage disc teeth 222, integrating the two meshing transmissions into the same component, greatly reducing the space occupied by the transmission structure and effectively improving the utilization rate of the internal space of the device; on the other hand, the height of the linkage column teeth 221 is consistent with that of the gear set 41, which can ensure that its meshing height with the straight tooth section 312 is exactly the same as that of the upper gear 411 with the straight tooth section 312, avoiding The spur gear section 312 avoids the problem of uneven load distribution caused by simultaneously meshing two gears at different heights. This ensures uniform force distribution in the spur gear section 312, significantly reducing wear and jamming risks during transmission. The tooth height of the linkage disc tooth 222 is consistent with that of the lifting transmission tooth 211, ensuring complete contact between their meshing surfaces. This effectively improves the transmission's load-bearing capacity and operational stability. Furthermore, by adjusting the transmission ratio between the linkage disc tooth 222 and the linkage column tooth 221, the lateral displacement stroke of the sliding coil 3 and the lifting stroke of the lifting coil 2 can be flexibly matched. This ensures that the lifting coil 2 completes the corresponding lifting action just as the sliding coil 3 reaches its displacement position, achieving precise timing coordination for mode switching. This eliminates the need for additional complex stroke control structures, further simplifying the device's control logic.

[0037] See Figures 6-7 , Figures 9-10 Above the rotating movable frame 24, there is a matching annular lifting movable frame 23, which is coaxially arranged with the rotating movable frame 24. The lifting movable frame 23 is fixedly connected to the lower surface of the lifting support 21, and the lifting support 21 is provided with a rotation limit. (See reference...) Figure 4 and Figure 6The assembly plate 1 has two vertical limiting slides, symmetrically arranged on both sides of the lifting bracket 21. The lifting bracket 21 is provided with vertical slide bars corresponding to the vertical slides. The vertical slide bars can move vertically in the gaps of the limiting slides and restrict horizontal movement and rotation. The lifting movable frame 23 and the rotating movable frame 24 are respectively provided with the same number of lifting frame inclined sides 231 and rotating frame inclined sides 241 on their sides. The lifting frame inclined sides 231 and rotating frame inclined sides 241 are arranged in a circumferential array around the center of the lifting movable frame 23 and the rotating movable frame 24. When the rotating movable frame 24 rotates, it drives the rotating frame inclined sides 241 to rotate. The inclined surface 241 matches the inclined surface 231 of the lifting frame. The inclination angle of the inclined surface of each set of lifting frame inclined surface 231 and rotating frame inclined surface 241 is completely consistent. The surface of the inclined surface is polished and wear-resistant, and the extension length of the inclined surface is completely matched with the design lifting stroke of the lifting coil 2. Both ends of the inclined surface are integrally formed with horizontal limit stop structures to limit the extreme positions of the inclined surface's ascent and descent, and to prevent the inclined surface from slipping. When the rotating movable frame 24 is driven by the linkage gear group 22 to generate horizontal circumferential rotation, it drives the rotating frame inclined surface 241 to rotate synchronously circumferentially, so that the rotating frame inclined surface 241 and the inclined surface of the lifting frame inclined surface 231 are completely in contact. As the rotating movable frame continues to rotate, The inclined surface of the lifting frame 231 rises along the inclined surface of the rotating frame 241. Since the lifting movable frame 23 is constrained by rotational limits and cannot rotate circumferentially, the relative circumferential motion of the two sets of inclined surfaces is converted into the vertical upward linear motion of the lifting movable frame 23, thereby driving the lifting support 21 and the lifting coil 2 to move upward synchronously. When the rotating movable frame 24 rotates in the opposite direction, the inclined surface of the lifting frame 231 slides downward along the inclined surface of the rotating frame 241. Under the weight of the lifting support 21 and the lifting coil 2, the lifting movable frame 23 drives the lifting support to move downward synchronously, achieving the descent and avoidance of the lifting coil 2. Horizontal contact surfaces are provided at both ends of the inclined surface for limiting and stopping. When the vertical ascent reaches its highest point, the horizontal surfaces of the two inclined sides contact each other, maintaining the stability of the lifting bracket 21 at the highest point. With the above structural design, on the one hand, the circumferential rotation of the rotating movable frame 24 can be smoothly converted into the vertical linear motion of the lifting movable frame 23 through the combination of multiple sets of inclined surfaces in the circumferential array. Compared with the traditional direct-drive lifting structure, the multiple sets of inclined surfaces in the circumferential array can evenly distribute the driving force on the entire circumference, making the lifting force of the lifting bracket 21 more uniform, completely avoiding the problem of lifting jamming and swaying caused by unilateral force, ensuring that the lifting coil 2 always remains horizontal during the lifting process, and effectively improving the accuracy of charging alignment.On the other hand, the design of multiple sets of inclined planes working in sync significantly improves the load-bearing capacity of the lifting structure. Furthermore, by adjusting the inclination angle of the inclined planes, the matching relationship between the lifting stroke and rotation angle can be flexibly adjusted to adapt to different installation spaces and lifting requirements, making it more versatile. The limiting stop structures at both ends of the inclined planes can mechanically limit the lifting when it reaches its limit position, eliminating the need for additional limiting components. Simultaneously, after the lifting reaches its position, the horizontal stop structure locks the position, preventing the lifting coil 2 from falling during charging and ensuring the stability of the charging position. The design of the lifting movable frame 23 being fixedly connected to the lifting bracket 21 and constrained by rotation limits ensures that when the inclined planes move relative to each other, only vertical linear displacement occurs, preventing circumferential rotational misalignment and avoiding problems such as inclined plane slippage or transmission failure. It also ensures that the lifting coil always remains coaxial with the charging position, preventing a decrease in charging coupling efficiency due to circumferential misalignment.

[0038] See Figure 6 and Figure 9 The assembly plate 1 is provided with inclined edge slots 232 for the inclined edge 231 of the lifting frame to be placed in the non-rising state. The number of slots corresponds exactly to the number of inclined edges 231 of the lifting frame. They are arranged in a circumferential array around the central axis of the mounting hole. The inner cavity shape of each inclined edge slot 232 is perfectly matched with the outer shape of the inclined edge of the lifting frame. When the lifting coil is in the non-rising descending avoidance state, the inclined edge of the lifting frame is completely embedded in the corresponding inclined edge slot.

[0039] See Figures 9-12 The assembly plate 1 has mounting holes for the rotating movable frame 24 on the lifting coil 2. The mounting holes are circular through holes that fit the shape of the rotating movable frame 24, allowing the rotating movable frame 24 to be rotatably installed in the holes. A limiting ring 25 is provided between the rotating movable frame 24 and the lifting movable frame 23. The limiting ring 25 has elastic deformation capability to adapt to assembly requirements. The inner diameter of the limiting ring 25 is smaller than the inner diameter of the rotating movable frame 24, but larger than the outer diameter of the lifting movable frame 23. This ensures that the limiting ring 25 can vertically limit the rotating movable frame 24 without interfering with the vertical lifting movement of the lifting movable frame 23. The limiting ring 25 vertically limits the rotating movable frame 24. Multiple circumferentially evenly arranged elastic buckles are integrally formed on the inner wall of the mounting hole side of the assembly plate 1. The top of the buckles has a guide slope for easy assembly, and the bottom has a limiting stop surface. (See reference...) Figure 13The limiting ring 25 has a matching notch at the contact position with the mounting hole wall of the assembly plate 1. When the limiting ring 25 is aligned and pressed down, the buckle engages with the notch of the limiting ring 25 for limiting. The limiting ring 25 is used to vertically limit the rotating movable frame 24, which can effectively limit its axial displacement without affecting the free circumferential rotation of the rotating movable frame 24. This prevents the rotating movable frame 24 from jumping up and down during rotation, and ensures that the meshing surfaces of the inclined side 241 of the rotating frame and the inclined side 231 of the lifting frame always maintain a stable fit, avoiding transmission failure or inclined surface slippage.

[0040] Example 3 In this embodiment, the overall structure is basically the same as that in Embodiment 1; the structural differences are described in the following reference. Figure 14 In the figure, the linkage gear assembly 22 has only a single vertical transmission gear that meshes with the worm gear 42 and the lifting transmission gear 211. The worm gear 42 outputs the transmission to the linkage gear assembly 22, and the single gear of the linkage gear assembly 22 directly transmits the transmission to the lifting transmission gear 211. The number of meshing gears in the linkage gear assembly 22 can be adjusted according to the transmission ratio and installation space required by the user.

[0041] The drive motor 43 and the linkage gear set 22 are respectively arranged on both sides of the lifting bracket 21 to achieve overall weight balance of the device, avoiding deformation of the assembly plate 1 or installation off-center load caused by weight concentration on one side. At the same time, this arrangement can effectively avoid the lifting stroke of the lifting bracket 21 and the lateral displacement stroke of the sliding bracket 31, completely avoiding structural interference between moving parts and ensuring smooth operation of all device movements. The worm 42 is longer than the diameter of the lifting coil 2, ensuring that the worm 42 can maintain a constant meshing state with the lower worm wheel 412 of the gear set 41 and the horizontal transmission gear of the linkage gear set 22 throughout the entire stroke range, and will not disengage due to the lateral displacement of the sliding bracket 31 or the lifting stroke of the lifting bracket 21. At the same time, it can reserve sufficient stroke space for the lateral displacement of the sliding coil 3, ensuring that the sliding coil 3 can be completely displaced to the center area of ​​the charging position. In addition, it reduces the width requirement of the equipment and saves the space occupied by the equipment.

[0042] The assembly plate 1 is externally fixedly equipped with an upper shell 12 and a lower shell 13, which are fastened together as one unit. The upper shell 12 has a slot for placing a charging device on its upper part.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] 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 dual-mode single-motor rack and pinion drive lifting wireless charging device, comprising an assembly plate (1), wherein a lifting coil (2) and a sliding coil (3) are provided on the assembly plate (1), the lifting coil (2) is connected to the assembly plate (1) through a vertical lifting structure, and the sliding coil (3) is connected to the assembly plate (1) through a horizontal sliding structure, characterized in that: The upper part of the assembly plate (1) is provided with a charging position for the corresponding wireless charging device. The horizontal sliding structure drives the sliding coil (3) to move laterally within the assembly plate (1). The transmission module (4) has only one drive motor (43). The horizontal sliding structure is provided with a straight tooth section (312). The straight tooth section (312) is a rack set on one side of the horizontal sliding structure and is connected to the output end of the transmission module (4). The power output by the transmission module (4) drives the horizontal sliding structure to move. The horizontal sliding structure and the vertical lifting structure transmit the power of the transmission module (4) through the linkage gear group (22). The extension direction of the straight tooth section (312) is consistent with the movement direction of the horizontal sliding structure. The transmission module (4) and the linkage gear group (22) are both arranged on the assembly plate (1) and are located on the same side of the assembly plate (1) as the straight tooth section (312).

2. The dual-mode single-motor rack and pinion drive lifting wireless charging device according to claim 1, characterized in that: The assembly plate (1) is provided with slide rails (11) on both sides. The horizontal sliding structure includes slide rails (11) and sliding brackets (31). The sliding coil (3) is mounted on the sliding bracket (31). The sliding bracket (31) is provided with horizontal sliding grooves (311) on both sides corresponding to the slide rails (11). The horizontal sliding grooves (311) are slidably connected to the slide rails (11). The sliding bracket (31) drives the sliding coil (3) to move laterally along the slide rails (11).

3. The dual-mode single-motor rack and pinion drive lifting wireless charging device according to claim 2, characterized in that: The transmission module (4) includes a gear set (41), a worm (42) and a drive motor (43). The transmission module (4) is mounted on the mounting plate (1) and inside the sliding bracket (31). The sliding bracket (31) has a straight tooth section (312) parallel to the slide rail (11) inside. The straight tooth section (312) is driven by the gear set (41) meshing with the worm (42). The worm (42) is mounted on the drive motor (43).

4. The dual-mode single-motor rack and pinion drive lifting wireless charging device according to claim 3, characterized in that: The gear set (41) consists of two vertically coaxial upper gears (411) and a lower worm gear (412). The upper gear (411) meshes with the spur section (312), and the lower worm gear (412) meshes with the worm (42). The gear set (41) is rotatably mounted on the mounting plate (1) through an axial through hole and a transition shaft (413). The gear set (41) and the drive motor (43) are mounted on a transmission bracket (44), which is fixed on the mounting plate (1).

5. A dual-mode single-motor rack and pinion drive lifting wireless charging device according to claim 4, characterized in that: The vertical lifting structure includes a lifting bracket (21) and a lifting transmission gear (211). The lifting coil (2) is mounted on the lifting bracket (21) and is driven by the lifting bracket (21) to lift. The lifting transmission gear (211) is set vertically relative to the assembly plate (1). The linkage gear group (22) meshes with the lifting transmission gear (211). The lateral sliding structure meshes with the linkage gear group (22). The linkage gear group (22) is fixed on the assembly plate (1) and can rotate. Through the rotation of the linkage gear group (22), the lifting transmission gear (211) drives the lifting bracket (21) and the lifting coil (2) to perform lifting movements.

6. A dual-mode single-motor rack and pinion drive lifting wireless charging device according to claim 5, characterized in that: The worm (42) is arranged parallel to the slide rail (11). The output end of the transmission module (4) is coaxially fixed to the worm (42). The output shaft of the drive motor (43) is connected to the worm (42) to drive the worm (42) to rotate around its own axis. The linkage gear set (22) includes a worm wheel for linkage with the worm (42) and a lifting gear that meshes with the lifting transmission gear (211). The lifting transmission gear (211) adopts a straight tooth rack structure. The worm wheel and the lifting gear in the linkage gear set (22) are designed to be axially perpendicular and are connected by a traditional transmission structure. The worm (42) meshes with the horizontal transmission gear and is driven to rotate by rotation. The horizontally rotating gear meshes with the vertical transmission gear. The lifting transmission gear (211) meshes with the vertical transmission gear.

7. A dual-mode single-motor rack and pinion drive lifting wireless charging device according to claim 6, characterized in that: The drive motor (43) and the linkage gear group (22) are respectively arranged on both sides of the lifting bracket (21), and the length of the worm (42) is greater than the diameter of the lifting coil (2).

8. A dual-mode single-motor rack and pinion drive lifting wireless charging device according to claim 4, characterized in that: The vertical lifting structure includes a lifting bracket (21) and a rotating movable frame (24). The lifting coil (2) is mounted on the lifting bracket (21) and is driven by the lifting bracket (21) to lift and lower. The rotating movable frame (24) is mounted below the lifting bracket (21), and the lifting bracket (21) and the rotating movable frame (24) are matched with the shape of the coil. The bottom of the rotating movable frame (24) is provided with lifting transmission teeth (211). The lifting transmission teeth (211) mesh with the linkage teeth group (22), and the lifting transmission teeth (211) are arranged around the bottom side of the rotating movable frame (24) so ​​that the rotating movable frame (24) rotates horizontally and drives the lifting bracket (21) to lift and lower vertically.

9. A dual-mode single-motor rack and pinion drive lifting wireless charging device according to claim 8, characterized in that: The straight tooth segment (312) is constantly meshed with the upper gear (411) and simultaneously with the linkage gear group (22).

10. A dual-mode single-motor rack and pinion drive lifting wireless charging device according to claim 9, characterized in that: The linkage gear set (22) consists of linkage column teeth (221) and linkage disc teeth (222). The linkage gear set (22) is rotatably mounted on the mounting plate (1). The linkage column teeth (221) have the same height as the gear set (41) and are columnar in shape. They are composed of two vertically coaxial gears. The upper part of the linkage column teeth (221) meshes with the spur tooth section (312) and the lower part meshes with the linkage column teeth (221). The tooth width of the linkage disc teeth (222) is the same as that of the lifting transmission teeth (211) and maintains constant meshing with the linkage column teeth (221) and the lifting transmission teeth (211).

11. A dual-mode single-motor rack and pinion drive lifting wireless charging device according to claim 10, characterized in that: Above the rotating movable frame (24) is a lifting movable frame (23) of matching shape. The lifting movable frame (23) is fixedly connected to the lifting support (21), and the lifting support (21) is provided with a rotation limit. The lifting movable frame (23) and the rotating movable frame (24) are respectively provided with the same number of lifting frame inclined sides (231) and rotating frame inclined sides (241). The lifting frame inclined sides (231) and rotating frame inclined sides (241) are arranged in a circumferential array around the center of the lifting movable frame (23) and the rotating movable frame (24). When the rotating movable frame (24) rotates, it drives the rotating frame inclined sides (241) to rotate. The inclined surface of the rotating frame (241) matches the inclined surface of the lifting frame (231). When the rotating movable frame (24) drives the inclined surface of the rotating frame (241) to contact the inclined surface of the lifting frame (231), the inclined surface of the lifting frame (231) rises along the inclined surface of the rotating frame (241). The inclined surface of the lifting frame (231) drives the lifting movable frame (23) and the lifting support (21) to move vertically upward. When the rotating movable frame (24) rotates in the opposite direction, the inclined surface of the lifting frame (231) descends along the inclined surface of the rotating frame (241). Affected by the rotation limit, the lifting movable frame (23) and the lifting support (21) move vertically downward.

12. A dual-mode single-motor rack and pinion drive lifting wireless charging device according to claim 11, characterized in that: The assembly plate (1) is provided with a slant groove (232) for placing the slant side (231) of the lifting frame in the non-lifted state.

13. A dual-mode single-motor rack and pinion drive lifting wireless charging device according to claim 11, characterized in that: The assembly plate (1) has an installation hole in the lifting coil (2) for the rotating movable frame (24) to be installed. The rotating movable frame (24) can be rotatably installed in the hole. A limiting ring (25) is provided between the rotating movable frame (24) and the lifting movable frame (23). The limiting ring (25) vertically limits the rotating movable frame (24).

14. A dual-mode single-motor rack and pinion drive lifting wireless charging device according to claim 13, characterized in that: The mounting hole of the assembly plate (1) has a protruding buckle on its inner side. The limiting ring (25) has a matching notch at the contact position with the mounting hole wall of the assembly plate (1). When the limiting ring (25) is aligned and pressed down, the buckle is engaged in the notch for limiting.

15. A dual-mode single-motor rack and pinion drive lifting wireless charging device according to any one of claims 1-14, characterized in that: The assembly plate (1) is externally fixedly fitted with an upper shell (12) and a lower shell (13), which are fastened together as one unit.

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