Mode switching wireless charging transmission structure

Abstract

The utility model relates to wireless charging technical field, and disclose a mode switching wireless charging transmission structure, including the casing and fixed in the base plate of casing, be equipped with the charging coil of wireless charging on the base plate, and the casing is equipped with the equipment to be charged in the position of charging coil, charging coil includes the lift coil and the sliding coil, and the lift coil is connected with the base plate through the lift rod and can lift perpendicularly to the base plate, and the sliding coil is connected with the base plate through the sliding support and can slide parallel to the base plate, the utility model makes the sliding coil can be based on the charging area of different equipment to be charged and carry out the stepless continuous position adjustment, solve the charging energy efficiency loss problem caused by the positioning deviation of traditional slide rail structure, the meshing of driving rod and gear greatly simplifies the space ratio of transmission structure in the equipment, and further improve the equipment internal structure space utilization, significantly reduce the processing and assembly cost of complex guide mechanism.

Description

Technical Field

[0001] This utility model relates to the field of wireless charging technology, specifically a mode-switching wireless charging transmission structure. Background Technology

[0002] In the field of wireless charging technology, devices achieve wireless power transmission through electromagnetic induction or magnetic coupling resonance principles. Their core components are the transmitting coil and the receiving coil. With technological evolution, this field has subdivided into two main approaches: magnetic wireless charging devices integrate permanent magnet arrays (such as neodymium iron boron magnets) with coils, using magnetic attraction to automatically and precisely align the transmitting and receiving ends. Typical applications include magnetic charging docks for portable devices such as smartphones and headphones, offering advantages in high positioning accuracy and strong coupling efficiency. Non-magnetic wireless charging devices, based on universal international standards such as Qi, rely on the spatial overlap between the receiving device's built-in coil and the transmitting coil to achieve energy transfer. They are widely compatible with various wireless charging-enabled electronic products, such as smartwatches, tablets, and third-party compatible devices.

[0003] In the current field of dual-end wireless charging devices, to simultaneously meet the charging needs of both magnetic and non-magnetic charging, two independent systems—one with a magnetic coil and the other with a non-magnetic coil—must be integrated. If a fixed layout is used, the non-magnetic coil requires a larger coverage area, thus occupying additional internal space and significantly increasing the overall size, cost, and charging efficiency. If a mobile design is adopted, the drive mechanism (such as a lead screw drive assembly) suffers from increased space requirements and costs due to its structural complexity. Especially when using a simple sliding rail structure to drive the coil movement, the lack of a precise guiding and positioning mechanism makes it difficult to guarantee coil displacement accuracy, easily leading to defects such as charging position misalignment, reduced energy efficiency, and overheating. Utility Model Content

[0004] (I) Technical problem to be solved: In view of the shortcomings of the existing technology, this utility model provides a mode switching wireless charging transmission structure, which has the advantages of small device size and accurate alignment of charging area, and solves the problem of large size and low precision of non-magnetic charging module of traditional dual-end charging device.

[0005] (II) Technical Solution: To achieve the goal of small device size and accurate wireless charging area alignment, this utility model provides the following technical solution: a mode-switching wireless charging transmission structure, including a housing and a base plate fixed inside the housing, wherein a wireless charging coil is provided on the base plate, and a device to be charged is provided on the housing corresponding to the position of the charging coil; the charging coil includes a lifting coil and a sliding coil, wherein the lifting coil is connected to the base plate through a lifting rod and can be lifted and lowered perpendicularly to the base plate, and the sliding coil is connected to the base plate through a sliding bracket and can slide parallel to the base plate; the sliding bracket is slidably connected to both the lifting coil and the base plate, and when the sliding bracket slides parallel to the base plate, the lifting coil is moved vertically downward along the lifting rod.

[0006] Preferably, the lifting coil is a magnetic coil, the sliding coil is a non-magnetic coil, and a circuit board is fixedly mounted on the substrate. Both the lifting coil and the sliding coil are electrically connected to the circuit board. When the sliding bracket moves the sliding coil to directly above the lifting coil, the lifting coil descends to the lowest point along the lifting rod. When the sliding bracket slides relative to the substrate, it triggers the circuit board to switch connection states, so that the sliding coil is connected to the circuit board while the lifting coil is disconnected from the circuit board.

[0007] Preferably, a driving structure is fixedly mounted on the substrate, and a driving rod is connected to the driving end of the driving structure. The driving rod is fixedly connected to the sliding bracket, and when the driving structure is activated, it drives the driving rod to drive the sliding bracket to slide laterally.

[0008] Preferably, the sliding bracket drives the sliding coil to move continuously and infinitely laterally, and a gear is fixedly installed at the driving end of the driving structure. The driving rod is a toothed rod that meshes with the gear. When the gear rotates, it drives the driving rod through meshing transmission, so that the driving rod makes a continuous linear displacement parallel to the substrate along its axial direction.

[0009] Preferably, the driving structure is a motor, and the driving structure is embedded in the substrate.

[0010] Preferably, the lifting coil is electrically connected to the circuit board via a lifting rod, and the sliding coil is electrically connected to the circuit board via a sliding bracket.

[0011] Preferably, the lifting rod is provided in two or more sets along the circumferential direction of the lifting coil.

[0012] Preferably, the lifting rod is fixedly connected to the base plate, and an elastic structure is provided between the lifting rod and the base plate; the lifting rod is fixedly connected to the lifting coil, and the sliding bracket is fixedly connected to the sliding coil.

[0013] Preferably, the sliding bracket has inclined sliding grooves on both sides, and the lifting coil has sliding rods fixed on both sides, with the sliding rods on both sides slidingly engaging with the corresponding sliding grooves; when the sliding bracket moves laterally parallel to the base plate, the inclined sections of the sliding grooves cause the sliding rods to descend longitudinally along the lifting rods.

[0014] Preferably, a magnetic suction plate corresponding to the position of the lifting coil is fixedly installed on the housing.

[0015] (III) Beneficial Effects: Compared with the prior art, this utility model provides a mode-switching wireless charging transmission structure, which has the following beneficial effects:

[0016] 1. This mode-switching wireless charging transmission structure, through the cooperation of the drive rod structure and the gear structure, enables the sliding coil to perform stepless continuous position adjustment according to the charging area of ​​different devices to be charged, solving the problem of charging energy efficiency loss caused by positioning deviation of traditional slide rail structures. At the same time, the meshing of the drive rod and the gear greatly simplifies the space ratio of the transmission structure in the device, thereby improving the utilization rate of the internal structural space of the device. The meshing of the gear and the drive rod can significantly reduce the processing and assembly cost of complex guiding mechanisms while ensuring displacement accuracy. Furthermore, the meshing transmission between the gear and the drive rod can greatly improve the stability of the sliding bracket during operation.

[0017] 2. This mode-switching wireless charging transmission structure, through the combined use of a sliding bracket structure and a lifting coil structure, significantly improves the compatibility and convenience of dual-end charging devices. When charging magnetic devices, the lifting coil attracts and fixes the device for charging; while when charging non-magnetic devices, the drive structure is linked to the lateral displacement of the sliding bracket, which simultaneously triggers the lifting coil to descend through the sliding groove, forming a spatially staggered stacking layout, maximizing the use of vertical space to compress the device thickness. During this process, the displacement of the sliding bracket synchronously controls the on / off state of the circuit, realizing seamless switching of the coil power supply circuit. Attached Figure Description

[0018] Figure 1 This is a front view of the mode-switching wireless charging transmission structure in this utility model;

[0019] Figure 2 This is a cross-sectional view of the mode-switching wireless charging transmission structure in this utility model;

[0020] Figure 3 This is a three-dimensional schematic diagram of the internal structure of the mode-switching wireless charging transmission structure in this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the gear and drive rod in this utility model.

[0022] In the diagram: 1. Housing; 2. Substrate; 21. Circuit board; 22. Drive structure; 221. Gear; 3. Lifting coil; 31. Slide rod; 4. Lifting rod; 5. Sliding coil; 6. Sliding bracket; 61. Drive rod; 62. Sliding groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 A mode-switching wireless charging transmission structure includes a housing 1 and a base plate 2 fixed inside the housing 1. The base plate 2 is equipped with a wireless charging coil and serves as the internal core support structure, fixing the charging coil to maintain its positional stability and ensuring efficient transmission of the electromagnetic field. The housing 1 is equipped with a device to be charged at the position corresponding to the charging coil. The corresponding position of the housing 1 is designed for placing the device to be charged, making it easy for users to intuitively align the device with the coil and reducing operational complexity. The charging coil includes a lifting coil 3 and a sliding coil 5. The lifting coil 3 is connected to the base plate 2 via a lifting rod 4 and can be raised and lowered perpendicular to the base plate 2. The sliding coil 5 is connected to the base plate 2 via a sliding bracket 6 and can slide parallel to the base plate 2. The design of the lifting coil 3 and the sliding coil 5 is intended to be compatible with the wireless charging needs of different types of devices. The lifting coil 3 adapts to the adsorption and positioning requirements of magnetic devices, enhancing charging accuracy. The sliding coil 5 moves horizontally via the sliding bracket 6, covering the variable charging area of ​​non-magnetic devices. This structure solves the limitation that a single coil cannot take into account both magnetic and non-magnetic modes, improves the versatility of the equipment, and reduces spatial conflicts through an independent motion mechanism; the sliding bracket 6 is slidably connected to the lifting coil 3 and the base plate 2. When the sliding bracket 6 slides parallel to the base plate 2, the lifting coil 3 moves longitudinally down along the lifting rod 4.

[0025] Please see Figures 1-4The lifting coil 3 is a magnetic coil, specifically designed for precise adsorption and efficient charging of magnetic devices. The sliding coil 5 is a non-magnetic coil, supporting standard wireless charging protocols for general-purpose devices. A circuit board 21 is also fixedly mounted on the substrate 2, with both the lifting coil 3 and the sliding coil 5 electrically connected to it. The circuit board 21 is fixed to the substrate 2, managing the electrical connections uniformly and ensuring controllable power supply to the coils. This distinction enhances charging compatibility and safety. The circuit board 21 acts as a control center, coordinating the coil's operating state and preventing energy waste or overheating risks caused by simultaneous activation of both coils, thus achieving intelligent mode adaptation. When the sliding coil 5 moves directly above the lifting coil 3, the lifting coil 3 lowers to its lowest point to free up vertical space and avoid physical interference. Simultaneously, the displacement of the sliding bracket 6 triggers the circuit board 21 to switch the connection state via mechanical or electronic sensing, disconnecting the lifting coil 3 and connecting the sliding coil 5. This design enables seamless switching, automatically optimizing spatial layout and circuit configuration during non-magnetic charging to ensure that only the active coils operate, improving energy efficiency and safety; no manual intervention is required from the user, enhancing the automation and reliability of the device.

[0026] Please see Figures 1-4A drive structure 22 is fixedly mounted on the substrate 2. A drive rod 61 is connected to the drive end of the drive structure 22, and the drive rod 61 is fixedly connected to the sliding bracket 6. When the drive structure 22 is activated, the drive rod 61 drives the sliding bracket 6 to slide laterally. The design of the drive structure 22, fixed to the substrate 2, provides a stable and reliable power source, ensuring that the driving force is directly transmitted to the transmission components. The fixed connection between the drive rod 61 and the sliding bracket 6 allows the drive structure 22 to drive the sliding bracket 6 to slide laterally when activated, thereby driving the sliding coil 5 to move parallel to the substrate 2. The sliding bracket 6 drives the sliding coil 5 to move continuously and infinitely laterally. A gear 221 is fixedly mounted on the drive end of the drive structure 22, and the drive rod 61 is a gear that meshes with the gear 221. The design of the sliding bracket 6 driving the sliding coil 5 to move continuously and infinitely laterally is to achieve precise and stepless position adjustment to adapt to the charging area of ​​various sizes of devices to be charged, avoiding the deviation of traditional segmented positioning. A fixed gear 221 is driven at the drive end, and the drive rod 61 is designed to mesh with it as a rack and pinion. The rotational motion is converted into linear displacement using the gear-rack meshing principle of 221. This transmission method is compact and efficient, providing high-precision continuous linear motion, solving the common positioning error problem in slide rail structures, and significantly reducing the space occupied by the transmission mechanism. When the gear 221 rotates, it drives the drive rod 61 through meshing transmission, causing the drive rod 61 to make a continuous linear displacement parallel to the base plate 2 along its axial direction. The design of the gear 221 rotating to drive the drive rod 61 to make a continuous linear displacement parallel to the base plate 2 along its axial direction through meshing transmission is to achieve high-precision, low-friction linear motion within a limited space. The gear-rack meshing mechanism of 221 ensures the continuity and controllability of the displacement, avoiding the complex guiding requirements of traditional lead screws or slide rails. This design optimizes the utilization of internal space, reduces processing and assembly costs, and ensures the smooth movement and repeatability of the sliding coil 5. The drive structure 22 is a motor, and the drive structure 22 is embedded in the base plate 2.

[0027] Please see Figures 1-4The lifting coil 3 is electrically connected to the circuit board 21 via the lifting rod 4, and the sliding coil 5 is electrically connected to the circuit board 21 via the sliding bracket 6. Two or more sets of lifting rods 4 are arranged along the circumference of the lifting coil 3. The lifting rods 4 are fixedly connected to the base plate 2, and an elastic structure is provided between the lifting rods 4 and the base plate 2; the lifting rods 4 and the lifting coil 3 are fixedly connected, and the sliding bracket 6 and the sliding coil 5 are fixedly connected. The sliding bracket 6 has inclined sliding grooves 62 on both sides, and sliding rods 31 are fixed on both sides of the lifting coil 3. The sliding rods 31 on both sides slide and engage with the corresponding sliding grooves 62. The sliding grooves 62 can achieve single-drive-source control of multiple component movements through mechanical linkage. When the sliding bracket 6 moves laterally, the inclined grooves guide the sliding rods 31 to move longitudinally, thereby linking the lifting coil 3 to rise and fall. This design integrates horizontal sliding and vertical lifting functions, saving space for independent drive mechanisms, reducing costs, and ensuring the synchronization and reliability of the actions; when the sliding bracket 6 moves laterally parallel to the base plate 2, the inclined sections of the sliding grooves 62 cause the sliding rods 31 to descend longitudinally along the lifting rods 4. A magnetic suction plate corresponding to the position of the lifting coil 3 is fixedly installed on the housing 1.

[0028] Working Principle: When the device to be charged is placed on the surface of the housing 1, different charging coils are used depending on the device type. If the device supports magnetic charging, it can be fixed in position by a magnetic plate, and the lifting coil 3 will charge it. When the device is not magnetic, the drive structure 22 is activated, and the drive rod 61 moves laterally through the engagement of gear 221, causing the sliding bracket 6 to slide parallel to the base plate 2, so that the sliding coil 5 moves to the charging area of ​​the device to be charged. During the process of the sliding bracket 6 driving the sliding coil 5, the inclined sliding grooves 62 on both sides of the sliding bracket 6 cooperate with the sliding rod 31 of the lifting coil 3. When the sliding bracket 6 moves laterally, the inclined grooves force the sliding rod 31 to descend vertically, so that the lifting coil 3 descends along the lifting rod 4. During this process, the lifting coil 3 and the sliding coil 5 gradually form a spatially misaligned stack, that is, staggered arrangement, with the lifting coil 3 below and the sliding coil 5 above. At the same time, when the sliding bracket 6 slides relative to the base plate 2, the connection state of the circuit board 21 is switched: the circuit of the lifting coil 3 is disconnected and the circuit of the sliding coil 5 is connected. At this point, the device enters the non-magnetic charging mode, and the sliding coil 5 is in operation. When the device to be charged is removed, the elastic structure of the lifting rod 4 pushes the lifting coil 3 to reset, the sliding bracket 6 moves in the opposite direction, and the circuit automatically switches back to the initial state.

[0029] When the device charges a non-magnetic device, the wireless charging area settings differ for different devices, requiring precise movement of the sliding coil 5. The drive structure 22 rotates the gear 221 at its output end. The gear 221 meshes with the rack-and-pinion drive rod 61, converting the rotational motion of the gear 221 into a continuous linear displacement of the rack along the axial direction. This drives the sliding bracket 6 to slide laterally parallel to the substrate 2, moving the sliding coil 5, which is fixed to it, to the corresponding charging area of ​​the device. In this process, the meshing transmission between the gear 221 and the rack-and-pinion drive rod 61 not only ensures precise movement of the sliding coil 5 to the charging area, but also, due to the design of the gear 221 and the rack-and-pinion drive rod 61 (where the drive rod 61 only needs to translate axially and the drive structure 22 is fixedly mounted on the substrate 2), it significantly reduces space occupation, making the internal structure of the device more compact and reducing its size. Furthermore, the meshing transmission mechanism of the gear 221 and the drive rod 61 significantly reduces manufacturing costs while ensuring the movement accuracy of the sliding bracket 6.

[0030] 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.

[0031] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mode-switching wireless charging transmission structure, comprising a housing (1) and a base plate (2) fixed inside the housing (1), wherein a wireless charging coil is provided on the base plate (2), and a device to be charged is provided on the housing (1) corresponding to the position of the charging coil, characterized in that: The charging coil includes a lifting coil (3) and a sliding coil (5). The sliding coil (5) is connected to the substrate (2) through a sliding bracket (6) and can slide parallel to the substrate (2). A driving structure (22) is fixedly installed on the substrate (2). A gear (221) is fixedly installed at the driving end of the driving structure (22). The gear (221) is connected to a toothed driving rod (61). The driving rod (61) is fixedly connected to the sliding bracket (6).

2. The mode-switching wireless charging transmission structure according to claim 1, characterized in that: The lifting coil (3) is connected to the base plate (2) via the lifting rod (4) and can be lifted and lowered perpendicularly to the base plate (2); the lifting coil (3) is a magnetic coil, the sliding coil (5) is a non-magnetic coil, and a circuit board (21) is also fixedly installed on the base plate (2). The lifting coil (3) and the sliding coil (5) are electrically connected to the circuit board (21); the sliding bracket (6) is slidably connected to both the lifting coil (3) and the base plate (2). When the sliding bracket (6) slides parallel to the base plate (2), the lifting coil (3) is moved vertically down along the lifting rod (4).

3. The mode-switching wireless charging transmission structure according to claim 2, characterized in that: When the sliding bracket (6) moves the sliding coil (5) directly above the lifting coil (3), the lifting coil (3) descends to the lowest point along the lifting rod (4), and when the sliding bracket (6) slides relative to the substrate (2), it triggers the circuit board (21) to switch the connection state, so that the sliding coil (5) is connected to the circuit board (21) and the lifting coil (3) is disconnected from the circuit board (21).

4. The mode-switching wireless charging transmission structure according to claim 1, characterized in that: The sliding bracket (6) drives the sliding coil (5) to move continuously and infinitely in the lateral direction. When the gear (221) rotates, it drives the drive rod (61) through meshing transmission, so that the drive rod (61) makes a continuous linear displacement parallel to the substrate (2) along its axial direction.

5. The mode-switching wireless charging transmission structure according to claim 1, characterized in that: The driving structure (22) is a motor, and the driving structure (22) is embedded on the substrate (2).

6. The mode-switching wireless charging transmission structure according to claim 2, characterized in that: The lifting coil (3) is electrically connected to the circuit board (21) via the lifting rod (4), and the sliding coil (5) is electrically connected to the circuit board (21) via the sliding bracket (6).

7. The mode-switching wireless charging transmission structure according to claim 2, characterized in that: The lifting rod (4) is provided in two or more sets along the circumferential direction of the lifting coil (3).

8. The mode-switching wireless charging transmission structure according to claim 2, characterized in that: The lifting rod (4) is fixedly connected to the base plate (2), and an elastic structure is provided between the lifting rod (4) and the base plate (2); the lifting rod (4) is fixedly connected to the lifting coil (3), and the sliding bracket (6) is fixedly connected to the sliding coil (5).

9. The mode-switching wireless charging transmission structure according to claim 2, characterized in that: The sliding bracket (6) has inclined sliding grooves (62) on both sides, and the lifting coil (3) has sliding rods (31) fixed on both sides. The sliding rods (31) on both sides slide in cooperation with the corresponding sliding grooves (62). When the sliding bracket (6) moves laterally parallel to the base plate (2), the inclined section of the sliding groove (62) causes the sliding rods (31) to descend longitudinally along the lifting rod (4).

10. The mode-switching wireless charging transmission structure according to claim 1, characterized in that: A magnetic suction plate corresponding to the position of the lifting coil (3) is fixedly installed on the housing (1).

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