Dual-mode switching wireless charging switching dual-motor independent transmission structure

Abstract

The invention relates to the technical field of wireless charging, and discloses a dual-mode switching wireless charging switching dual-motor independent transmission structure, which comprises an assembly plate provided with a lifting coil and a sliding coil, the sliding coil is connected with the assembly plate through a transverse sliding structure, the lifting coil is connected with the assembly plate through a vertical lifting structure, and the lifting coil is connected with the assembly plate through a transverse sliding structure. The vertical lifting structure comprises a lead screw and a driving motor, and the lead screw is arranged between the driving motor and the lifting coil in the vertical direction and converts driving force of the driving motor into lifting force of vertical movement of the lifting coil. The problem that a traditional wireless charger cannot be used independently due to mode switching mutual interference caused by a linkage type structure is effectively solved, the requirement for independent use of two charging modes in a vehicle-mounted scene is met, the driving motor is designed to be the hollow shaft motor of the hollow pipe shaft, the overall structural complexity is simplified, and the cost is reduced. And the whole equipment is more compact, and noise and vibration generated in the operation process are less.

Description

Technical Field

[0001] This invention relates to the field of wireless charging technology, specifically to a dual-mode switching wireless charging switching dual-motor independent transmission structure. Background Technology

[0002] Wireless charging technology, due to its ease of use, has been widely applied in charging scenarios for mobile phones and other electronic devices. Currently, devices supporting wireless charging are mainly divided into two categories: one is the magnetic power profile (MPP), which integrates a magnetic ring and achieves charging docking by attracting the magnetic ring inside the wireless charger; the other is the extended power profile (EPP), which is a non-magnetic charging device without a magnetic ring. In this case, the wireless charger needs to move its own wireless charging coil through an internal mechanical structure to match and dock with the internal charging coil of the device being charged. Therefore, if existing wireless chargers are compatible with the above two charging modes, they need to set up two corresponding structures and mechanical drive mechanisms inside. The increase in structures and independent modules not only causes the internal mechanical structures to inevitably rub against each other when switching charging modes, but also causes internal parts to collide when the overall structure shakes, resulting in vibration and noise problems. Therefore, existing wireless chargers usually only set a single charging mode, reducing vibration and noise by simplifying the internal structure.

[0003] While existing wireless charging devices can achieve some noise and vibration suppression by eliminating one charging structure, for usage scenarios like vehicles where frequent changes and relocation are not possible, wireless chargers need to be compatible with both magnetic and non-magnetic charging modes and support independent use of both. However, existing wireless chargers with built-in dual charging modes generally employ a linked solution. This structure, when the non-magnetic charging mode is activated, drives the magnetic charging coil to descend vertically while simultaneously driving the non-magnetic charging coil laterally. This design not only significantly increases the number of internal parts and the assembly structure but also causes the noise and vibration of such wireless chargers to be much higher than in normal usage scenarios after prolonged vehicle driving. Consequently, the original noise control and vibration suppression measures of the device's internal structure cannot meet the stringent requirements of vehicle use. Furthermore, this linked structure prevents independent switching between magnetic and non-magnetic charging modes; the device can only activate one of the two modes, making simultaneous magnetic and non-magnetic charging impossible, and failing to meet the practical need for independent use of both modes. Summary of the Invention

[0004] (I) Technical problem to be solved: In view of the shortcomings of the existing technology, the present invention provides a dual-mode switching wireless charging switching dual-motor independent transmission structure, which is compatible with magnetic and non-magnetic dual modes and supports independent switching. It has the advantages of simple internal structure and vibration and noise suppression effect that meets the requirements of vehicle. It solves the problem that the existing wireless chargers are not compatible with independent use of magnetic and non-magnetic dual modes, and have complex internal parts and assembly structure, and excessive vibration and noise under vehicle working conditions.

[0005] (II) Technical Solution: To achieve the above-mentioned goal of being compatible with both magnetic and non-magnetic charging modes and supporting independent switching, with a simple internal structure and vibration and noise suppression effect that meets vehicle requirements, this invention provides the following technical solution: A dual-mode wireless charging switching dual-motor independent transmission structure, including an assembly plate, on which a lifting coil for magnetic charging and a sliding coil for non-magnetic charging are respectively installed. The sliding coil is connected to the assembly plate through a horizontal sliding structure, and the lifting coil is connected to the assembly plate through a vertical lifting structure. The vertical lifting structure includes a lead screw and a drive motor. The drive motor is fixedly installed on the assembly plate, and the lead screw is arranged vertically between the drive motor and the lifting coil, converting the driving force of the drive motor into a lifting force that drives the lifting coil to move vertically. One end of the lead screw is fixedly connected to the lifting coil, and the other end of the lead screw is connected to the drive end of the drive motor.

[0006] Preferably, the lateral sliding structure includes a drive module and a sliding bracket. The sliding coil is fixedly mounted on the sliding bracket, and the drive module is fixedly mounted on the assembly plate. Slide rails are integrally machined on both sides of the assembly plate, and lateral sliding grooves are machined at both ends of the sliding bracket. The lateral sliding grooves at both ends slide in cooperation with the slide rails on both sides of the assembly plate. The inner end of one side of the lateral sliding groove is also machined with a straight tooth structure that meshes with the drive end of the drive module. The straight tooth structure is arranged parallel to the movement direction of the sliding bracket and converts the driving force of the drive module into a lateral force that drives the sliding bracket to move laterally.

[0007] Preferably, the outer side of the slide rail is machined with an inclined rail along the lateral movement direction of the sliding bracket. The inclined rail has a trapezoidal cross-section with its trapezoidal inclined surface facing the direction of the sliding bracket. The outer end of the lateral slide groove is also machined with an inclined snap-fit ​​structure. The inclined surface of the inclined snap-fit ​​structure faces the direction of the slide rail, and the inclined snap-fit ​​structure is laterally slidably snapped onto the inclined rail.

[0008] Preferably, the length of the transverse slide groove on one side of the straight tooth structure is greater than the length of the transverse slide groove on the other side, the length of the straight tooth structure is less than the length of the slide rail, and a limit stop is fixedly installed on the outside of the transverse slide groove on the opposite side of the straight tooth structure.

[0009] Preferably, the inclined snap-fit ​​structure has two or more sets processed at the outer end of the transverse groove along the movement direction of the sliding bracket.

[0010] Preferably, the drive motor is a hollow shaft motor, which includes a motor housing with a built-in stator and a hollow tube shaft. The tube shaft is coaxially assembled inside the motor housing, and the inner surface of the tube shaft is provided with a thread adapted to the lead screw. The lead screw is coaxially inserted into the tube shaft. When the motor housing drives the tube shaft to rotate, the tube shaft engages with the thread of the lead screw through the thread on its inner wall, thereby driving the lead screw to move up and down in the vertical direction.

[0011] Preferably, the drive motor is a worm motor, the drive end of the worm motor is a worm, and the worm meshes with a worm gear. A transmission bracket is also fixedly mounted on the worm motor. The worm gear is rotatably mounted on the transmission bracket. The worm gear has a threaded hole adapted to the lead screw. The lead screw is coaxially inserted into the threaded hole. The axis of the lead screw is perpendicular to the axis of the worm. When the worm motor drives the worm gear to rotate through the worm, the worm gear engages with the thread of the lead screw through the thread of the threaded hole, causing the lead screw to move up and down in the vertical direction. The transmission bracket is fixedly connected to the assembly plate.

[0012] Preferably, the bottom of the lifting coil is machined with a grooved buckle, and the top of the lead screw is fixedly provided with a chuck, which is engaged in the grooved buckle.

[0013] Preferably, the lifting coil is provided with three or more sets of guide rods evenly distributed along its circumference, and the assembly plate is provided with guide seats that extend vertically and slide in correspondence with the three or more sets of guide rods. The guide rods can slide vertically back and forth along the extension direction of the guide seats.

[0014] Preferably, the assembly plate is machined with a mounting groove for mounting the drive motor, the mounting groove is matched with the shape of the drive motor, and the drive motor is fixedly mounted in the mounting groove.

[0015] Preferably, a circuit board is fixedly installed below the assembly plate. The circuit board has a clearance hole coaxial with the lead screw. When the lead screw drives the lifting coil to descend, the lead screw inserts into the clearance hole. The lifting coil, sliding coil, drive module, and drive motor are electrically connected to the circuit board through wiring. The circuit board controls the movement of the lifting coil and sliding coil in a coordinated manner through a preset program. When the lifting coil is activated, the drive module drives the sliding coil to move laterally away from the vertical lifting area of ​​the lifting coil, and the drive motor drives the lifting coil to rise to charge the device to be charged. When the sliding coil is activated, the drive motor drives the lifting coil to descend away from the lateral movement area of ​​the sliding coil, and the drive module drives the sliding coil to move laterally to find the location of the device to be charged for charging.

[0016] Preferably, the surface of the assembly plate is further machined with grooves to accommodate the drive motor wiring.

[0017] Preferably, an upper housing is fixedly mounted on the top of the assembly plate, and a lower housing is fixedly mounted on the bottom of the assembly plate, with the upper housing and the lower housing being fastened together as a single unit.

[0018] (III) Beneficial Effects: Compared with the prior art, the present invention provides a dual-mode switching wireless charging switching dual-motor independent transmission structure, which has the following beneficial effects: 1. This dual-mode wireless charging switching dual-motor independent transmission structure, through the combined use of a lifting coil structure and a sliding coil structure, effectively solves the problem of mutual interference and inability to use independently caused by the linkage structure of traditional dual-mode wireless chargers. It meets the independent use requirements of two charging modes in vehicle scenarios. Furthermore, by designing the drive motor as a hollow shaft motor with a hollow tube shaft, the hollow tube shaft and the lead screw form an integrated transmission design with direct thread engagement, which greatly reduces the number of parts in the vertical lifting structure, simplifies the overall structural complexity, makes the device more compact, generates less noise and vibration during operation, and is more suitable for the structural requirements of vehicle equipment. Moreover, by eliminating the additional axial extension transmission structure of the traditional motor, the overall thickness of the device is also effectively reduced.

[0019] 2. This dual-mode switching wireless charging switching dual-motor independent transmission structure, through the cooperation of the sliding bracket structure and the slide rail structure, allows the trapezoidal inclined rail on the outer side of the slide rail and the inclined snap-fit ​​structure at the outer end of the transverse slide groove to engage with each other during the assembly process. This enables rapid assembly of the sliding bracket and provides reliable vertical limiting, effectively reducing the swaying of the sliding bracket during lateral movement and improving the stability and accuracy of the docking between the sliding coil and non-magnetic devices.

[0020] 3. This dual-mode switching wireless charging switching dual-motor independent transmission structure, through the combined use of a worm gear motor structure and a lead screw structure, allows the worm gear motor to be horizontally mounted within the assembly plate without occupying excessive vertical installation space. This effectively optimizes the overall space layout on the assembly plate, making the internal structure of the device more reasonable and compact, thus adapting to the limited installation space requirements of automotive scenarios. At the same time, the unidirectional power transmission characteristic of the worm gear drive gives the lifting coil a self-locking function, so that the lifting coil forms a self-lock when it stops at any position in the vertical direction. Even if there are external disturbances such as bumps in the car, the lead screw will not shift or wobble, greatly improving the stability and safety of the magnetic charging process. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the dual-mode switching wireless charging switching dual-motor independent transmission structure in this invention; Figure 2 This is a three-dimensional schematic diagram of the internal structure of the dual-mode switching wireless charging switching dual-motor independent transmission structure in this invention. Figure 3 This is a top view of the internal structure of the dual-mode switching wireless charging switching dual-motor independent transmission structure in this invention; Figure 4 This is a front view of the internal structure of the dual-mode switching wireless charging switching dual-motor independent drive structure in this invention; Figure 5 This is a three-dimensional schematic diagram of the assembly plate structure of the dual-mode switching wireless charging switching dual-motor independent transmission structure in this invention; Figure 6 This is a schematic diagram of the sliding coil structure of the dual-mode switching wireless charging switching dual-motor independent drive structure in this invention; Figure 7 This is a cross-sectional view of the transverse slideway structure of the dual-mode switching wireless charging switching dual-motor independent transmission structure in this invention; Figure 8 This is a schematic diagram showing the connection between the drive motor structure and the lifting coil structure of the dual-mode switching wireless charging switching dual-motor independent transmission structure in this invention. Figure 9 This is a schematic diagram of the drive motor structure installation of the dual-mode switching wireless charging switching dual-motor independent transmission structure in this invention; Figure 10 This is a cross-sectional view of the hollow shaft motor structure of the dual-mode switching wireless charging switching dual-motor independent transmission structure in this invention; Figure 11 This is a three-dimensional structural diagram of the worm motor in Embodiment 2; Figure 12 This is a schematic diagram showing the connection between the worm gear motor structure and the lifting coil structure in Embodiment 2; Figure 13 This is a schematic diagram of the worm gear motor structure installation in Example 2.

[0022] In the diagram: 1. Assembly plate; 11. Slide rail; 12. Inclined rail; 13. Guide seat; 14. Mounting slot; 15. Wire groove; 2. Lifting coil; 21. Lead screw; 22. Guide rod; 3. Drive motor; 31. Motor housing; 32. Tube shaft; 33. Turbine; 34. Transmission bracket; 35. Groove buckle; 36. Chuck; 4. Sliding coil; 41. Sliding bracket; 42. Transverse slide groove; 43. Straight tooth structure; 44. Inclined buckle structure; 5. Drive module; 6. Limiting block; 7. Circuit board; 71. Clearance hole; 8. Upper housing; 9. Lower housing. Detailed Implementation

[0023] 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.

[0024] Example 1 Please see Figures 1-10A dual-mode wireless charging switching dual-motor independent transmission structure includes an assembly plate 1. The assembly plate 1 is equipped with a lifting coil 2 for magnetic charging and a sliding coil 4 for non-magnetic charging. The lifting coil 2 uses an MPP (Magnetic Power Profile) structure module, while the sliding coil 4 uses an EPP (Extended Power Profile) structure module. The sliding coil 4 is connected to the assembly plate 1 via a horizontal sliding structure, and the lifting coil 2 is connected to the assembly plate 1 via a vertical lifting structure. The sliding coil 4 is movably connected to the assembly plate 1 via the horizontal sliding structure, and the lifting coil 2 is connected to the assembly plate 1 via the vertical lifting structure. The mounting areas of the two coils on the assembly plate 1 are independent. This independent connection allows the transmission systems for the two charging modes to operate independently, ensuring that magnetic and non-magnetic charging can be started independently, avoiding structural interference during movement, and simplifying the internal layout. The vertical lifting structure includes a lead screw 21 and a drive motor 3. The drive motor 3 is fixedly mounted on the assembly plate 1, and the lead screw 21 is vertically positioned between the drive motor 3 and the lifting coil 2, converting the driving force of the drive motor 3 into a lifting force that drives the lifting coil 2 to move vertically. One end of the lead screw 21 is fixedly connected to the lifting coil 2, and the other end is connected to the drive end of the drive motor 3. The drive motor 3 is positioned and fixed to the mounting groove 14 on the assembly plate 1 by countersunk bolts. The size of the mounting groove 14 is adapted to the shape of the drive motor 3 to ensure the coaxiality and perpendicularity of the motor after installation, avoiding eccentric vibration during operation. The lead screw 21 is arranged vertically between the drive motor 3 and the lifting coil 2, and its surface is rolled with trapezoidal threads. By directly converting the rotational power of the drive motor 3 into the vertical lifting force of the lifting coil 2, intermediate components such as gears and belts in traditional transmission are eliminated, reducing energy loss and friction of parts during power transmission, thereby reducing vibration and noise. At the same time, the direct transmission method can improve power transmission efficiency and lifting accuracy.

[0025] Please see Figures 1-10The transverse sliding structure includes a drive module 5 and a sliding bracket 41. A sliding coil 4 is fixedly mounted on the sliding bracket 41, and the drive module 5 is fixedly mounted on the assembly plate 1. Both sides of the assembly plate 1 are integrally machined with slide rails 11. Both ends of the sliding bracket 41 are machined with transverse grooves 42, which slide and engage with the slide rails 11 on both sides of the assembly plate 1. The drive module 5 is fixed to the preset mounting position on the assembly plate 1 by bolt assemblies. The slide rails 11 on both sides of the assembly plate 1 are integrally machined, forming a unified structure with the assembly plate 1. Compared to separate slide rails 11, this significantly improves structural strength and installation accuracy. The slide rail 11 has a rectangular cross-section with rounded corners. Both ends of the sliding bracket 41 are machined with U-shaped transverse grooves 42 that fit the slide rails 11. The inner walls of the transverse grooves 42 are polished and then coated with wear-resistant grease. The engagement of the U-shaped grooves with the rectangular slide rails 11 restricts the vertical movement of the sliding bracket 41, while the lubrication reduces frictional resistance and wear on parts during the sliding process. The inner end of one side of the transverse slide groove 42 is also machined with a spur gear structure 43 that meshes with the drive end of the drive module 5. The spur gear structure 43 is set parallel to the movement direction of the sliding bracket 41 and converts the driving force of the drive module 5 into a lateral force that drives the sliding bracket 41 to move laterally. The inner end of one side of the transverse slide groove 42 is formed with a spur gear structure 43 by a gear hobbing process. Its module is precisely matched with the gear module of the drive end of the drive module 5 to ensure smooth meshing. The length of the spur gear structure 43 is adapted to the effective movement stroke of the sliding bracket 41 and is always parallel to the movement direction of the sliding bracket 41. The drive end gear of the drive module 5 and the spur gear structure 43 achieve full tooth width meshing. Compared with friction transmission and other methods, gear meshing has a more stable transmission ratio and higher power transmission efficiency, which can achieve precise displacement control of the sliding bracket 41 and avoid problems such as slippage and power loss during movement. The outer side of the slide rail 11 is machined with an inclined rail 12 along the transverse movement direction of the sliding bracket 41. The inclined rail 12 has a trapezoidal cross-section with its trapezoidal inclined surface facing the sliding bracket 41. The outer end of the transverse slide groove 42 is also machined with an inclined snap-fit ​​structure 44, the inclined surface of which faces the slide rail 11. The inclined snap-fit ​​structure 44 is laterally slidably snapped onto the inclined rail 12. The inclined rail 12 on the outer side of the slide rail 11 is integrally machined with the slide rail 11. The inclined snap-fit ​​structure 44 at the outer end of the transverse slide groove 42 is made of engineering plastic and is fixed to the outer end of the slide groove after injection molding or stamping. Its inclined surface has the same angle as the trapezoidal inclined surface of the inclined rail 12. When the sliding bracket 41 is assembled with the slide rail 11, the inclined surface of the inclined surface buckle structure 44 slides against the inclined surface of the inclined rail 12, and the inclined surface guides the quick engagement, so that the initial positioning can be completed without additional fasteners. After the assembly is completed, the back end face of the inclined surface buckle structure 44 fits tightly against the trapezoidal back end face of the inclined rail 12 to form a vertical limit.The length of the transverse groove 42 on one side with the straight tooth structure 43 is greater than the length of the transverse groove 42 on the other side. The length of the straight tooth structure 43 is less than the length of the slide rail 11, and a limit stop 6 is fixedly installed on the outer side of the transverse groove 42 opposite to the straight tooth structure 43. This ensures that the straight tooth structure 43 remains effectively engaged with the drive end of the drive module 5 throughout the entire stroke of the sliding bracket 41 on the slide rail 11, preventing tooth disengagement and ensuring the continuity and stability of power transmission. The limit stop 6 is made of elastic polyurethane material with a polished end face. Its design purpose is to limit the maximum transverse stroke of the sliding bracket 41, preventing the straight tooth structure 43 from disengaging from the drive end of the drive module 5 due to excessive movement, or the inclined snap-fit ​​structure 44 from disengaging from the inclined rail 12. Two or more sets of inclined snap-fit ​​structures 44 are machined at the outer end of the transverse groove 42 along the movement direction of the sliding bracket 41. The reason for using multiple sets of inclined snap-fit ​​structures 44 is that a single snap-fit ​​structure cannot provide a continuous and stable snap-fit ​​limiting effect. Multiple sets can form multiple points of support and limiting throughout the lateral movement of the sliding bracket 41. The function of this structure is to enhance the connection stability between the sliding bracket 41 and the slide rail 11, prevent the sliding bracket 41 from moving up and down due to bumps in vehicle scenarios, and at the same time, multiple snap-fits can distribute the force during the sliding process, reduce the wear of individual snap-fits, and extend service life.

[0026] Please see Figures 1-10The drive motor 3 is a hollow shaft motor, comprising a motor housing 31 with an internal stator and a hollow tube shaft 32. The tube shaft 32 is coaxially mounted inside the motor housing 31, and its inner surface is threaded to match the lead screw 21. The lead screw 21 is coaxially inserted into the tube shaft 32. The motor housing 31 has a cylindrical structure, and the internal stator is fixed to the inner wall of the motor housing 31 by an interference fit. The two ends of the hollow tube shaft 32 are rotatably connected to the motor housing 31 by deep groove ball bearings. The inner surface of the tube shaft 32 is machined with trapezoidal threads to match the lead screw 21 using a gear hobbing process. The thread profile angle is optimized to improve transmission efficiency and load-bearing capacity. The lead screw 21 is made of high-strength alloy steel and its surface is nitrided to enhance wear resistance. It is coaxially inserted into the tube shaft 32. When the motor housing 31 drives the tube shaft 32 to rotate, the tube shaft 32, through the threaded engagement of its inner wall with the threaded engagement of the lead screw 21, drives the lead screw 21 to move vertically up and down. A grooved buckle 35 is machined at the bottom of the lifting coil 2, and a chuck 36 is fixedly mounted on the top of the lead screw 21, engaging within the grooved buckle 35. An annular grooved buckle 35 is integrally machined at the bottom of the lifting coil 2, and the inner wall of the grooved buckle 35 is provided with an elastic rubber bushing, which can both buffer the transmission impact and improve the tightness of the engagement. A disc-shaped chuck 36 is fixedly mounted on the top of the lead screw 21, and the edge of the chuck 36 is machined with an annular protrusion that matches the grooved buckle 35. The surface of the protrusion is rounded to facilitate engagement and assembly. After the chuck 36 and the lead screw 21 are connected by threads, they are further circumferentially fixed by pins to prevent relative rotation. Compared to a simple threaded connection, the engagement method is easier for later maintenance and disassembly, and the elastic bushing design can absorb vibrations during transmission. The lifting coil 2 has three or more sets of guide rods 22 evenly distributed along its circumference. The mounting plate 1 has guide seats 13 extending vertically and corresponding to each of the three or more guide rods 22 in a sliding engagement. The guide rods 22 can slide vertically back and forth along the extension direction of the guide seats 13. The guide seats 13 are cylindrical hollow structures with self-lubricating bushings embedded inside, forming a sliding engagement with the guide rods 22. Their function is to restrict the movement trajectory of the lifting coil 2, allowing it to slide back and forth only in the vertical direction, preventing twisting or deviation during lifting, improving the smoothness and accuracy of the lifting motion. Simultaneously, the self-lubricating bushings reduce friction and wear between the guide rods 22 and the guide seats 13, reducing motion noise.

[0027] Please see Figures 1-10The assembly plate 1 has a mounting slot 14 for mounting the drive motor 3. The mounting slot 14 matches the shape of the drive motor 3, and the drive motor 3 is fixedly installed in the mounting slot 14. The shape of the mounting slot 14 on the assembly plate 1 matches the outer contour of the drive motor 3. The inner wall of the mounting slot 14 has a positioning pin hole that cooperates with the positioning pin at the bottom of the drive motor 3 to achieve rapid positioning of the motor. The coaxiality and perpendicularity of the motor after installation are ensured by the shape adaptation and positioning pin positioning. The elastic buffer pad can absorb the vibration generated by the motor during operation and prevent the vibration from being transmitted to the assembly plate 1 and causing overall resonance. A circuit board 7 is fixedly installed below the assembly plate 1. The circuit board 7 has a clearance hole 71 that is coaxial with the lead screw 21. When the lead screw 21 drives the lifting coil 2 to descend, the lead screw 21 inserts into the clearance hole 71. The lifting coil 2, sliding coil 4, drive module 5 and drive motor 3 are electrically connected to the circuit board 7 through wiring. The surface of the assembly plate 1 is also machined with a wire groove 15 to accommodate the wiring of the drive motor 3. An upper housing 8 is fixedly mounted on top of the assembly plate 1, and a lower housing 9 is fixedly mounted on the bottom of the assembly plate 1. The upper housing 8 and the lower housing 9 are fastened together as a single unit. The width of the groove 15 on the surface of the assembly plate 1 is adapted to the diameter of the wiring of the drive motor 3, and the groove depth is slightly larger than the diameter of the wiring. The inner wall of the groove 15 is polished smooth, and the corners are rounded to avoid scratching the wiring. Both the upper housing 8 and the lower housing 9 are injection molded from engineering plastics, and the surface is provided with reinforcing ribs to improve structural strength. The bottom edge of the upper housing 8 and the top edge of the lower housing 9 are provided with mutually compatible buckles and slots, and threaded connecting posts are distributed around the perimeter. The upper and lower housings 9 are tightly fastened together by bolts, and a waterproof sealing gasket is provided between the fastening surfaces.

[0028] Please see Figures 1-10Using assembly plate 1 as the overall installation reference, the independent switching between magnetic and non-magnetic charging modes is achieved through a dual-motor independent drive design on assembly plate 1. Circuit board 7 controls the movement of drive motor 3 and drive module 5 through a preset program to perform linkage control on the lifting coil 2 and sliding coil 4. When the lifting coil 2 is activated, drive module 5 drives sliding coil 4 to move laterally away from the vertical lifting area of ​​lifting coil 2, and drive motor 3 drives lifting coil 2 to rise to charge the device to be charged. When the sliding coil 4 is activated, drive motor 3 drives lifting coil 2 to descend away from the lateral movement area of ​​sliding coil 4, and drive module 5 drives sliding coil 4 to move laterally to find the position of the device to be charged for charging. Circuit board 7 integrates a microcontroller, drive chip, and position feedback signal receiving module. The preset linkage control program is stored in the storage unit of circuit board 7 through firmware burning. Circuit board 7 establishes bidirectional signal connections with drive motor 3 and drive module 5 through shielded lines, which can send control commands in real time and receive position signals from both, ensuring the synchronization and accuracy of motion control. The reason for designing this linkage control structure is that while the lifting coil 2 and the sliding coil 4 adopt independent transmission designs, their installation spaces on the mounting plate 1 are related. If their movements are controlled individually without an avoidance mechanism, their movement trajectories may intersect during mode switching, causing collisions and friction between coils or with surrounding components, resulting in structural damage. Automatic avoidance is achieved through program presets when two charging modes are activated. When the lifting coil 2 is activated, the circuit board 7 first sends a command to the drive module 5, driving the sliding coil 4 to quickly move laterally to a safe area away from the vertical lifting of the lifting coil 2. Then, the drive motor 3 is controlled to drive the lifting coil 2 to rise smoothly to complete the magnetic charging docking of the device. When the sliding coil 4 is activated, the circuit board 7 first commands the drive motor 3 to lower the lifting coil 2 to a low position that does not interfere with the lateral movement of the sliding coil 4 and lock it. Then, the drive module 5 is controlled to drive the sliding coil 4 to find the location of the device to be charged, avoiding movement interference and component collisions. Among them, the lifting coil 2 used for magnetic charging is connected to the assembly plate 1 through a vertical lifting structure, and the sliding coil 4 used for non-magnetic charging is connected to the assembly plate 1 through a horizontal sliding structure. The circuit board 7 below the assembly plate 1 is electrically connected to the lifting coil 2, the sliding coil 4, the drive motor 3 and the drive module 5 through circuits, thereby realizing the coordinated control of each structure.In actual operation, when the magnetic charging mode is activated, the hollow shaft motor, i.e., the drive motor 3, fixedly installed in the mounting slot 14 of the assembly plate 1, will be powered on and started. A hollow tube shaft 32 with internal threads is coaxially mounted inside the motor housing 31 of this hollow shaft motor. A lead screw 21, connected to the lifting coil 2, is coaxially inserted into the hollow tube shaft 32. Therefore, when the motor housing 31 drives the hollow tube shaft 32 to rotate, the hollow tube shaft 32 converts the rotational motion into linear motion through the threaded engagement between its inner wall thread and the lead screw 21, thereby driving the lead screw 21 to move vertically. The top of the lead screw 21 is connected to the chuck 36... The groove buckle 35 at the bottom of the lifting coil 2 is engaged and fixed, so that the lifting coil 2 rises and falls synchronously with the lead screw 21. At the same time, three or more sets of guide rods 22 evenly distributed in the circumference of the lifting coil 2 slide and cooperate one-to-one with the guide seat 13 on the assembly plate 1 to ensure the stability of the lifting process. This allows the lifting coil 2 to move stably in the vertical direction to the charging area. When the lead screw 21 descends, it can be inserted into the clearance hole 71 on the circuit board 7, which is coaxial with it, to avoid structural interference with the circuit board 7. This effectively reduces the overall thickness of the structure, and finally realizes the docking of the lifting coil 2 with the magnetic device and completes the charging.Designing the drive motor 3 as a hollow shaft motor with a hollow tube shaft 32, and integrating it with the lead screw 21 through a direct threaded engagement, significantly reduces the number of parts in the vertical lifting structure, lowers the overall structural complexity, and makes the overall equipment more compact. Furthermore, the hollow shaft motor smoothly converts rotational motion into vertical linear motion of the lead screw 21 through threaded engagement, resulting in a shock-free transmission process. Combined with the sliding guidance of the guide rod 22 of the lifting coil 2 and the guide seat 13 on the assembly plate 1, the smoothness of the lifting motion is further improved, significantly reducing vibration and noise during operation. The threaded transmission also offers advantages such as stable transmission ratio and low cumulative error, enabling precise lifting of the lifting coil 2 and ensuring accurate charging docking of the magnetic device. This avoids docking misalignment issues caused by insufficient precision in traditional lifting structures. Moreover, the hollow design of the hollow tube shaft 32 eliminates the need for additional components at the drive end of the traditional motor. The axially extended transmission structure allows the motor to achieve effective transmission adaptation with the lead screw 21 without the need for an extended tube shaft 32. Only a shorter hollow tube shaft 32 is required to form a stable driving force transmission with the lead screw 21 through the inner wall thread. From a structural principle perspective, this significantly reduces the overall thickness of the motor itself. When the motor housing 31 drives the hollow tube shaft 32 to rotate, the hollow tube shaft 32 directly meshes with the lead screw 21 through the inner wall thread, directly converting the rotational motion into the vertical linear motion of the lead screw 21. The transmission path is short and does not rely on a thickened motor housing 31 to accommodate complex intermediate transmission components. Therefore, even if the motor housing 31 is designed to be thin, it can still achieve stable vertical drive of the lead screw 21 through the integrated thread transmission between the hollow tube shaft 32 and the lead screw 21. This optimizes the vertical spatial layout, reduces the overall thickness of the equipment, and avoids interference with surrounding structures such as the circuit board 7, making the internal overall structure more compact, thereby further reducing vibration and noise between parts.

[0029] Please see Figures 1-10When the non-magnetic charging mode is enabled, the drive module 5 fixed on the assembly plate 1 engages with the straight tooth structure 43 at the inner end of the transverse slide groove 42 on one side of the sliding bracket 41 through its drive end, converting the driving force into a transverse force, thereby driving the sliding bracket 41 with the fixed sliding coil 4 to move laterally along the slide rails 11 on both sides of the assembly plate 1, so that the sliding coil 4 can move to the device charging area to achieve wireless charging. The trapezoidal inclined rail 12 on the outer side of the slide rail 11 and the two or more sets of inclined snap-fit ​​structures 44 set at the outer end of the transverse slide groove 42 along the movement direction of the sliding bracket 41 form a sliding snap-fit ​​engagement. During the assembly stage, when the transverse slide groove 42 of the sliding bracket 41 is fitted into the slide rail 11, the inclined surface of the inclined snap-fit ​​structure 44 and the trapezoidal inclined surface of the inclined rail 12 can contact each other and generate a guiding relative sliding. With the guiding effect of the inclined surface, the two can be quickly snapped together and assembled. After the assembly is completed, the back end face of the inclined snap-fit ​​structure 44 and the back end face of the trapezoidal inclined surface of the inclined rail 12 form a surface contact snap-fit. The limiting effect of the end face fit prevents the sliding bracket 41 from moving relative to the slide rail 11 in the vertical direction. Thus, a stable vertical limiting is formed between the two sides of the sliding bracket 41 and the slide rail 11, ensuring that the sliding bracket 41 always maintains a stable snap-fit ​​engagement with the inclined rail 12 during the entire process of the transverse movement of the slide rail 11, effectively reducing radial shaking during the movement process, and realizing the precise docking of the sliding coil 4 and the non-magnetic suction device. In this application, the transmission structures of the magnetic charging mode and the non-magnetic charging mode work independently and are not linked to each other. The overall structure is simple and compact, which can effectively reduce the friction and collision of various components during movement, so that the vibration and noise suppression effect meets the stringent requirements of the vehicle scenario.

[0030] Example 2 Please see Figures 11-13The drive motor 3 is a worm motor, with the worm as the drive end. The worm meshes with a worm gear 33. A transmission bracket 34 is fixedly mounted on the worm motor, and the worm gear 33 is rotatably mounted on the transmission bracket 34. The worm gear 33 has a threaded hole adapted to the lead screw 21. The lead screw 21 is coaxially inserted into the threaded hole, with its axis perpendicular to the worm's axis. The drive end of the worm motor and the worm are integrally formed, and the worm is made of high-strength alloy steel. The worm gear 33 is made of copper alloy to reduce wear and noise during meshing. The worm gear 33 is rotatably mounted on the transmission bracket 34 via a deep groove ball bearing. The outer ring of the bearing has an interference fit with the mounting hole of the transmission bracket 34, while the inner ring has a clearance fit with the shaft of the worm gear 33. The threaded hole on the worm gear 33 is machined using a tapping process, and the thread type matches the thread of the lead screw 21. After the lead screw 21 is coaxially inserted into the threaded hole, the thread clearance is controlled within a very small range to ensure transmission accuracy. The axis of the lead screw 21 and the worm gear axis are set perpendicular to each other, and their spatial layout is optimized to avoid motion interference. When the worm motor drives the worm gear 33 to rotate through the worm, the worm gear 33 engages with the thread of the lead screw 21 through the thread of the threaded hole, causing the lead screw 21 to move vertically up and down. The transmission bracket 34 is fixedly connected to the mounting plate 1. The transmission bracket 34 is made of stamped steel plate or cast aluminum alloy bracket, and the structure is designed as a frame to balance strength and lightness. The transmission bracket 34 has mounting holes corresponding to the mounting plate 1 and bearing seats adapted to the bearings of the worm gear 33. The transmission bracket 34 and the mounting plate 1 are fixed together by a combination of locating pins and bolts. The locating pins are first inserted into the corresponding locating holes to achieve precise positioning, and then tightened by evenly distributed bolts. Spring washers are added at the bolt connections to prevent loosening.

[0031] Please see Figures 11-13When the drive motor 3 is a worm motor, the worm motor is fixedly connected to the assembly plate 1 through the transmission bracket 34. The worm 33 is rotatably mounted on the transmission bracket 34. The worm at the drive end of the worm motor meshes with the worm 33. When the worm motor starts, its driving force is transmitted to the worm 33 through the worm, causing the worm 33 to rotate on the transmission bracket 34. During the rotation of the worm 33, the thread on the inner wall of its threaded hole meshes with the thread of the lead screw 21, converting the rotational motion of the worm 33 into the vertical linear motion of the lead screw 21. This, in turn, drives the lifting coil 2, which is fixedly connected to one end of the lead screw 21, to achieve vertical lifting motion, thereby completing the charging docking action with the magnetic charging device in the magnetic charging mode. By designing the axis of lead screw 21 to be perpendicular to the axis of worm, the horizontal driving force output by the worm motor can be converted into the power to drive the lead screw 21 to move vertically through the meshing of the worm and worm wheel. Therefore, the worm motor can be placed horizontally in the assembly plate 1, thereby optimizing the spatial layout on the assembly plate 1. Furthermore, due to the principle that the worm wheel and worm gear transmission enables the lifting coil 2 to have a self-locking function, only the worm can drive the worm wheel in one direction during the transmission process. The worm wheel cannot drive the worm to rotate in the opposite direction. Combined with the threaded fit between the worm wheel and lead screw 21, when the lifting coil 2 is stopped at any position in the vertical direction, the lead screw 21 will not move in the opposite direction due to external disturbances such as vehicle bumps, thereby achieving stable self-locking of the lifting coil 2.

[0032] 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.

[0033] 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 switching wireless charging switching dual-motor independent transmission structure, comprising an assembly plate (1), wherein a lifting coil (2) for magnetic charging and a sliding coil (4) for non-magnetic charging are respectively mounted on the assembly plate (1), the sliding coil (4) is connected to the assembly plate (1) through a horizontal sliding structure, and the lifting coil (2) is connected to the assembly plate (1) through a vertical lifting structure, characterized in that: The vertical lifting structure includes a lead screw (21) and a drive motor (3). The drive motor (3) is fixedly installed on the assembly plate (1), and the lead screw (21) is arranged vertically between the drive motor (3) and the lifting coil (2) and converts the driving force of the drive motor (3) into a lifting force that drives the lifting coil (2) to move vertically.

2. The dual-mode switching wireless charging switching dual-motor independent transmission structure according to claim 1, characterized in that: One end of the lead screw (21) is fixedly connected to the lifting coil (2), and the other end of the lead screw (21) is connected to the drive end of the drive motor (3).

3. The dual-mode switching wireless charging switching dual-motor independent transmission structure according to claim 1, characterized in that: The lateral sliding structure includes a drive module (5) and a sliding bracket (41). The sliding coil (4) is fixedly installed on the sliding bracket (41). The drive module (5) is fixedly installed on the assembly plate (1). The assembly plate (1) has slide rails (11) integrally machined on both sides. The sliding bracket (41) has lateral grooves (42) machined at both ends. The lateral grooves (42) at both ends slide in cooperation with the slide rails (11) on both sides of the assembly plate (1). The inner end of one side of the lateral groove (42) is also machined with a straight tooth structure (43) that meshes with the drive end of the drive module (5). The straight tooth structure (43) is set parallel to the movement direction of the sliding bracket (41) and converts the driving force of the drive module (5) into a lateral force that drives the sliding bracket (41) to move laterally.

4. The dual-mode switching wireless charging switching dual-motor independent transmission structure according to claim 3, characterized in that: The slide rail (11) has an inclined rail (12) on its outer side that moves in the lateral direction of the sliding bracket (41). The inclined rail (12) has a trapezoidal cross section and its trapezoidal inclined surface faces the sliding bracket (41). The outer end of the lateral slide groove (42) is also provided with an inclined surface buckle structure (44). The inclined surface of the inclined surface buckle structure (44) faces the slide rail (11). The inclined surface buckle structure (44) is laterally slidably engaged with the inclined rail (12).

5. The dual-mode switching wireless charging switching dual-motor independent transmission structure according to claim 3, characterized in that: The length of the transverse groove (42) on one side of the straight tooth structure (43) is greater than the length of the transverse groove (42) on the other side. The length of the straight tooth structure (43) is less than the length of the slide rail (11). A limit stop (6) is fixedly installed on the outside of the transverse groove (42) on the opposite side of the straight tooth structure (43).

6. The dual-mode switching wireless charging switching dual-motor independent transmission structure according to claim 4, characterized in that: The inclined snap-fit ​​structure (44) has two or more sets processed at the outer end of the transverse slide groove (42) along the movement direction of the sliding bracket (41).

7. The dual-mode switching wireless charging switching dual-motor independent transmission structure according to claim 1, characterized in that: The drive motor (3) is a hollow shaft motor. The hollow shaft motor includes a motor housing (31) with a built-in stator and a hollow tube shaft (32). The tube shaft (32) is coaxially assembled inside the motor housing (31), and the inner surface of the tube shaft (32) is provided with a thread that matches the lead screw (21). The lead screw (21) is coaxially inserted into the tube shaft (32). When the motor housing (31) drives the tube shaft (32) to rotate, the tube shaft (32) engages with the thread of the lead screw (21) through the thread on its inner wall, thereby driving the lead screw (21) to move up and down in the vertical direction.

8. The dual-mode switching wireless charging switching dual-motor independent transmission structure according to claim 1, characterized in that: The drive motor (3) is a worm motor, the drive end of the worm motor is a worm, and the worm meshes with a turbine (33). A transmission bracket (34) is also fixedly installed on the worm motor. The turbine (33) is rotatably installed on the transmission bracket (34). The turbine (33) has a threaded hole that matches the lead screw (21). The lead screw (21) is coaxially inserted into the threaded hole. The axis of the lead screw (21) is perpendicular to the axis of the worm. When the worm motor drives the turbine (33) to rotate through the worm, the turbine (33) engages with the thread of the lead screw (21) through the thread of the threaded hole, causing the lead screw (21) to move up and down in the vertical direction. The transmission bracket (34) is fixedly connected to the assembly plate (1).

9. The dual-mode switching wireless charging switching dual-motor independent transmission structure according to claim 1, characterized in that: The bottom of the lifting coil (2) is machined with a groove buckle (35), and the top of the lead screw (21) is fixedly provided with a chuck (36), which is engaged in the groove buckle (35).

10. The dual-mode switching wireless charging switching dual-motor independent transmission structure according to claim 1, characterized in that: The lifting coil (2) is evenly provided with three or more sets of guide rods (22) along its own circumference. The assembly plate (1) is provided with a guide seat (13) that extends vertically and slides in correspondence with the three or more sets of guide rods (22). The guide rods (22) can slide vertically back and forth along the extension direction of the guide seat (13).

11. The dual-mode switching wireless charging switching dual-motor independent transmission structure according to claim 1, characterized in that: The assembly plate (1) is machined with a mounting groove (14) for mounting the drive motor (3). The mounting groove (14) matches the shape of the drive motor (3), and the drive motor (3) is fixedly installed in the mounting groove (14).

12. The dual-mode switching wireless charging switching dual-motor independent transmission structure according to claim 1, characterized in that: A circuit board (7) is fixedly installed below the assembly plate (1). The circuit board (7) has a clearance hole (71) coaxial with the lead screw (21). When the lead screw (21) drives the lifting coil (2) to descend, the lead screw (21) inserts into the clearance hole (71). The lifting coil (2), sliding coil (4), drive module (5) and drive motor (3) are electrically connected to the circuit board (7) through a circuit. The circuit board (7) controls the drive motor (3) and drive module (5) to move the lifting coil (2) and sliding coil (4) through a preset program. The movement of the coil (4) is controlled in a linkage manner. When the lifting coil (2) is started, the drive module (5) drives the sliding coil (4) to move laterally away from the vertical lifting area of ​​the lifting coil (2), and the drive motor (3) drives the lifting coil (2) to rise to charge the device to be charged. When the sliding coil (4) is started, the drive motor (3) drives the lifting coil (2) to descend away from the lateral movement area of ​​the sliding coil (4), and the drive module (5) drives the sliding coil (4) to move laterally to find the location of the device to be charged for charging.

13. The dual-mode switching wireless charging switching dual-motor independent transmission structure according to claim 1, characterized in that: The surface of the assembly plate (1) is also machined with a groove (15) to accommodate the wiring of the drive motor (3).

14. The dual-mode switching wireless charging switching dual-motor independent transmission structure according to claim 1, characterized in that: An upper housing (8) is fixedly mounted on the upper part of the assembly plate (1), and a lower housing (9) is fixedly mounted on the lower part of the assembly plate (1). The upper housing (8) and the lower housing (9) are fastened together as one unit.

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