Pulling wireless charging device

Abstract

This utility model relates to the field of wireless charging device technology, and discloses a pull-out wireless charging device, comprising: a bottom shell, the side wall of which has a pull-out opening; and a secondary charging base, which is movably installed at the pull-out opening so that the secondary charging base can extend out of the pull-out opening or be completely retracted into the inner cavity of the bottom shell, wherein a wireless charging module is disposed within the secondary charging base; wherein the secondary charging base is provided with a telescopic slide rod, allowing the wireless charging module to extend further outward. This utility model's wireless charging device solves the problems of traditional external secondary charging bases occupying a large space and easily accumulating dust, and fixed, hidden secondary charging bases resulting in a bulky device appearance. The secondary charging base can pop out when needed by pressing a button, and then be manually extended further, expanding the wireless charging space; when not needed, it can be retracted and hidden, achieving flexible space utilization.

Description

Technical Field

[0001] This utility model relates to the field of wireless charging device technology, and in particular to a pull-out wireless charging device. Background Technology

[0002] With the widespread use of electronic devices, wireless charging technology is increasingly favored by consumers due to its convenience. To meet users' needs for charging multiple devices simultaneously, wireless charging devices with auxiliary charging docks have emerged, allowing users to place a second device (such as Bluetooth headsets, smartwatches, etc.) on the auxiliary charging dock for charging. However, existing auxiliary charging docks are exposed and cannot be hidden when not in use. This not only results in a large overall footprint, making the device inconvenient to store and carry, but also leads to dust accumulation, affecting aesthetics and cleanliness. Related technologies have fixed and hidden the auxiliary charging dock inside the device, but this inevitably results in a bulky and cumbersome charging device. Existing technology CN108448739A discloses a drawer-type multifunctional home wireless charging device, which realizes the pull-out function of the charging device, allowing the wireless charging device to be hidden when not in use. However, this device is not compatible with other electronic products and is still not compact enough. Utility Model Content

[0003] The main purpose of this utility model is to propose a wireless charging device that aims to solve the technical problem of the large space occupied by the wireless charging device caused by the auxiliary charging base.

[0004] To achieve the above objectives, the pull-out wireless charging device proposed in this utility model includes:

[0005] The bottom shell has a pull-out opening on its side wall;

[0006] A secondary charging dock is movably mounted at the pull-out opening so that the secondary charging dock can extend out of the pull-out opening or be completely retracted into the inner cavity of the bottom shell. A wireless charging module is provided inside the secondary charging dock.

[0007] The auxiliary charging dock is equipped with a telescopic slide bar, which allows the wireless charging module to extend further outward.

[0008] Optionally, the pull-out wireless charging device further includes a drive device installed in the bottom shell, the output shaft of the drive device being connected to the auxiliary charging base to drive the auxiliary charging base to slide.

[0009] Optionally, the auxiliary charging base is connected to a rack, and the output shaft of the drive device is connected to a gear, with the rack meshing with the gear.

[0010] Optionally, the pull-out wireless charging device further includes a bracket installed inside the bottom shell. The bracket has a support groove communicating with the pull-out opening. After the auxiliary charging base retracts into the inner cavity of the bottom shell, it can be slidably accommodated in the support groove.

[0011] Optionally, the side wall of the auxiliary charging base is provided with a guide rib, and the groove wall of the support groove is provided with a guide groove. The guide groove extends along the sliding direction of the auxiliary charging base, and the guide rib and the guide groove are slidably engaged.

[0012] Optionally, the groove walls at both ends of the guide groove are used to block the guide ribs to limit the range of motion of the auxiliary charging base.

[0013] Optionally, the bottom shell has two pull-out openings, and there are two auxiliary charging bases. The two auxiliary charging bases are movably installed at the two pull-out openings, so that each auxiliary charging base can extend out of the pull-out opening or retract into the inner cavity of the bottom shell. Each auxiliary charging base is equipped with a wireless charging module.

[0014] Optionally, the two pull-out openings are respectively opened on the left and right sides of the bottom shell and staggered vertically, so that the two auxiliary charging seats can be arranged vertically when retracted into the inner cavity of the bottom shell, and the ends of the two auxiliary charging seats partially overlap when fully extended from the pull-out openings.

[0015] Optionally, the pull-out wireless charging device further includes a bracket installed inside the bottom shell. The bracket has two vertically arranged support slots, which are respectively connected to the two pull-out openings. After the two auxiliary charging bases retract into the inner cavity of the bottom shell, they are slidably received in the two support slots.

[0016] Optionally, the wireless charging device further includes a drive device installed inside the bottom shell. The output shaft of the drive device is connected to a gear, the axis of which extends along the height direction of the bottom shell. Both auxiliary charging bases are provided with racks, and the racks of both auxiliary charging bases mesh with the gear.

[0017] This invention solves the problems of traditional external charging docks being space-consuming and prone to dust accumulation, as well as the bulky appearance of fixed, hidden charging docks. The charging dock can extend when needed and retract when not in use, achieving flexible space utilization. This design ensures simultaneous charging of two devices while maintaining the compact shape of the wireless charging device, improving space efficiency. Furthermore, the retracted charging dock is flush with the bottom shell, avoiding dust accumulation from long-term exposure and improving the device's cleanliness and aesthetics. In addition, because the charging dock can be completely stored, the device is easier to carry and store when not in use, improving its portability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the wireless charging device of this utility model;

[0020] Figure 2 This is a schematic diagram of another embodiment of the wireless charging device of this utility model;

[0021] Figure 3 This is a cross-sectional view of the wireless charging device of this utility model;

[0022] Figure 4 This is an exploded view of the structure of the wireless charging device of this utility model;

[0023] Figure 5 This is a schematic diagram of another embodiment of the wireless charging device of this utility model;

[0024] Figure 6 This is a schematic diagram of the auxiliary charging base in this utility model;

[0025] Figure 7 This is a schematic diagram of the auxiliary charging base and driving device in this utility model;

[0026] Figure 8 This is a schematic diagram of the auxiliary charging base and bracket in this utility model;

[0027] Figure 9 This is a structural schematic diagram of the auxiliary charging base from another perspective in this utility model;

[0028] Figure 10 This is an exploded view of the support structure in this utility model;

[0029] Figure 11 This is an exploded view of another embodiment of the bracket in this utility model.

[0030] Explanation of icon numbers:

[0031]

[0032]

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] 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.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] This utility model proposes a pull-out wireless charging device, which aims to solve the technical problem of the large space occupied by the wireless charging device caused by the auxiliary charging base.

[0038] In the embodiments of this utility model, such as Figures 1 to 4 As shown, the wireless charging device includes: a bottom shell 10, with a pull-out opening 11 on the side wall of the bottom shell 10; a main charging base 20, which is installed on the top of the bottom shell 10; a secondary charging base 30, which is movably installed at the pull-out opening 11 so that the secondary charging base 30 can extend out of the pull-out opening 11 or retract into the inner cavity of the bottom shell 10; a first wireless charging module, which is installed in the main charging base 20 to wirelessly charge the electrical device placed on the main charging base 20; and a second wireless charging module 40, which is installed in the secondary charging base 30 to wirelessly charge the electrical device placed on the secondary charging base 30.

[0039] In this embodiment, the bottom shell 10 refers to the structural housing for mounting the main charging base 20 and the auxiliary charging base 30. It can be injection molded from plastic or metal. A pull-out opening 11 is provided on its side wall to allow the auxiliary charging base 30 to slide in and out. When not in use, the auxiliary charging base 30 can be completely retracted into the bottom shell 10, reducing space occupation. The pull-out opening 11 is a through-hole structure on the side wall of the bottom shell 10, which can be rectangular or arc-shaped, providing a channel for the auxiliary charging base 30 to extend and retract, allowing the auxiliary charging base 30 to dynamically adjust its position according to usage needs. The main charging base 20 refers to the charging platform mounted on the top of the bottom shell 10, which can be implemented as a boss structure. It is used to stably support the device to be charged and charge it through the built-in first wireless charging module, ensuring the fixed position of the device during charging. The secondary charging base 30 refers to an auxiliary charging platform that can slide along the pull-out opening 11. It can be the same size as or smaller than the main charging base 20. When slid open, it provides an additional charging area; when retracted, it is completely hidden inside the bottom shell 10, preventing dust accumulation and saving space. The first wireless charging module is an electromagnetic induction component integrated into the main charging base 20. It can be implemented using a coil array, providing wireless charging for devices placed on the main charging base 20, ensuring the independence and stability of the main charging function. The second wireless charging module 40 is an electromagnetic induction component integrated into the secondary charging base 30. It can be the same as the first wireless charging module or a miniature coil adapted to low-power devices, enabling the secondary charging base 30 to have independent charging capabilities when unfolded.

[0040] The retractable secondary charging base 30 structure enables dynamic space adjustment. While maintaining the wireless charging function for dual devices, the pull-out port 11 and the inner cavity of the bottom shell 10 are used to allow the secondary charging base 30 to be completely retracted and hidden when not in use. This avoids dust accumulation and space waste caused by exposure, and also avoids the problem of bulky device appearance caused by fixed and hidden structures, thus achieving a balance between functionality and compactness.

[0041] The bottom shell 10 serves as the basic structure of the wireless charging device, with a pull-out opening 11 on its side wall providing a channel for the auxiliary charging base 30. The main charging base 20 is mounted on top of the bottom shell 10, forming a stable charging platform. The auxiliary charging base 30 is movably mounted to engage with the pull-out opening 11, extending out of the opening 11 when in use and retracting into the cavity of the bottom shell 10 when not in use. The first wireless charging module is installed inside the main charging base 20, responsible for wirelessly charging devices (such as mobile phones or tablets) placed on the main charging base 20. The second wireless charging module 40 is installed inside the auxiliary charging base 30, wirelessly charging devices (such as headphones or smartwatches) placed on it when the auxiliary charging base 30 is extended.

[0042] When the auxiliary charging dock 30 is needed, the user can slide it out of the inner cavity of the bottom shell 10, allowing it to extend out of the pull-out opening 11. At this time, the second wireless charging module 40 moves out along with the auxiliary charging dock 30, forming an additional charging platform. The user can place the second device on the auxiliary charging dock 30 for charging. When the auxiliary charging dock 30 is no longer needed, the user can push it back into the inner cavity of the bottom shell 10, restoring the device to its compact state.

[0043] This design achieves dynamic space adjustment through the retractability of the secondary charging dock 30. When not in use, the secondary charging dock 30 is completely hidden within the bottom shell 10, avoiding exposed components occupying extra space and accumulating dust. At the same time, since the secondary charging dock 30 can be completely retracted, the bottom shell 10 does not need to reserve permanent internal space for it, thus avoiding a bulky device shape and maintaining the compact form of the wireless charging device while ensuring dual-device charging functionality.

[0044] Through the above solution, this application solves the problems of traditional external auxiliary charging docks occupying a large space and easily accumulating dust, as well as the bulky appearance of fixed, hidden auxiliary charging docks. The auxiliary charging dock 30 can be extended for use when needed and retracted for concealment when not needed, achieving flexible space utilization. This design ensures the function of charging two devices simultaneously while maintaining the compact shape of the wireless charging device, improving space utilization. At the same time, the auxiliary charging dock 30 is flush with the bottom shell 10 after retraction, avoiding the dust accumulation problem caused by long-term exposure and improving the cleanliness and aesthetics of the device. In addition, since the auxiliary charging dock 30 can be completely stored, the device is easier to carry and store when not in use, improving the product's portability.

[0045] like Figure 5 and Figure 6 As shown, the auxiliary charging base 30 is equipped with a telescopic slide rod 33, allowing the wireless charging module 40 to extend further outward. The auxiliary charging base 30 includes a first base 34 and a second base 35. The wireless charging module 40 is installed inside the first base 34, and the telescopic slide rod 33 is connected to the first base 34. The second base 35 has a telescopic groove, and the telescopic slide rod 33 slidably engages with the telescopic groove, allowing the first base 34 to move away from or closer to the second base 35. The first base 34 can be manually pulled away from the second base 35, thereby allowing for the placement of larger electrical devices and reducing the volume of the auxiliary charging base 30 in its stowed state.

[0046] A wire can be installed in the telescopic slide bar 33 for electrical connection with the wireless charging coil.

[0047] For example, such as Figure 3 and Figure 5As shown, the wireless charging device also includes a drive device 50 installed inside the bottom shell 10. The output shaft of the drive device 50 is connected to the auxiliary charging base 30 to drive the auxiliary charging base 30 to slide.

[0048] The drive unit 50 can be a micro motor or a linear motor, and its output shaft is rigidly connected to the auxiliary charging base 30 via a coupling or transmission rod. The drive unit 50 can be integrated inside the base housing 10, for example, located at the top of the inner cavity of the base housing 10, thereby minimizing the power transmission path. The control circuit of the drive unit 50 can be integrated inside the base housing 10, and its start and stop can be triggered by a preset program or external signals, such as using buttons to control the operation of the drive unit 50.

[0049] When the drive unit 50 receives a start signal, its output shaft, via a mechanical connection, pushes the auxiliary charging base 30 to slide along the pull-out opening 11. During retraction, the output shaft drives the auxiliary charging base 30 completely into the inner cavity of the bottom shell 10, preventing dust accumulation on the exposed parts. The position of the auxiliary charging base 30 can be monitored in real time using an encoder or Hall sensor built into the drive unit 50, and feedback can be sent to the control system to achieve precise stroke control. This automated drive method not only eliminates the inconvenience of manual operation but also improves the repeatability of the sliding trajectory through closed-loop control, ensuring consistent positioning accuracy of the auxiliary charging base 30 during continuous extension and retraction operations.

[0050] By installing a drive unit 50 inside the base shell 10 and connecting the output shaft of the drive unit 50 to the auxiliary charging base 30, automated sliding control of the auxiliary charging base 30 is achieved. This avoids the inconvenience of manually operating the extension and retraction of the auxiliary charging base 30, provides stable and reliable power control, and solves the problems of laborious user operation and uneven sliding process. The introduction of the drive unit 50 enables precise driving of the extension and retraction process of the auxiliary charging base 30, reducing the user's operational burden and improving the stability and reliability of the sliding process.

[0051] For example, such as Figure 5 As shown, the auxiliary charging base 30 is connected to a rack 31, and the output shaft of the drive device 50 is connected to a gear 51, with the rack 31 meshing with the gear 51.

[0052] The rack 31 can extend along the sliding direction of the auxiliary charging base 30. The module of the gear 51 matches that of the rack 31, and the axis of the gear 51 is coaxially fixed with the output shaft of the drive device 50. The rack 31 can be welded or integrally formed into the auxiliary charging base 30, and the gear 51 is connected to the output shaft of the drive device 50 through a keyway or flange.

[0053] The rotational motion of the output shaft of the drive unit 50 is transmitted to the rack 31 via the gear 51. The rack 31, under meshing action, generates linear displacement, thereby driving the auxiliary charging base 30 to extend and retract along the pull-out opening 11. For each rotation of the gear 51, the rack 31 moves a distance equal to the circumference of the gear 51's pitch circle. The moving speed of the auxiliary charging base 30 can be precisely adjusted by controlling the rotational speed of the drive unit 50. The rigid contact between the gear 51 and the rack 31 ensures that the auxiliary charging base 30 can move smoothly even when carrying electrical equipment.

[0054] The above technical solution achieves efficient transmission between the drive unit 50 and the auxiliary charging base 30. The gear 51 and rack 31 mechanism provides stable and reliable power transmission, avoiding slippage or offset during transmission. This transmission method has a compact structure, occupies little space, and is conducive to the miniaturization design of the overall device. At the same time, the gear 51 and rack 31 transmission has high transmission accuracy, enabling precise positioning and smooth sliding of the auxiliary charging base 30, improving the user experience. In addition, this transmission mechanism has strong load-bearing capacity, can adapt to frequent extension and retraction operations, and extends the service life of the device.

[0055] If the auxiliary charging base 30 lacks a stable guiding and storage structure during the retraction process, it may shake or shift randomly in the inner cavity, which will not only affect the compactness of the device, but may also cause the sliding path between the pull-out port 11 and the auxiliary charging base 30 to be misaligned due to the positional shift, thereby affecting the smoothness of subsequent pull-out operations.

[0056] For example, such as Figure 3 and Figure 6 As shown, the wireless charging device also includes a bracket 60 installed inside the bottom shell 10. The bracket 60 is provided with a support groove 61 that communicates with the pull-out opening 11. The auxiliary charging base 30 can be slidably accommodated in the support groove 61 after retracting into the inner cavity of the bottom shell 10.

[0057] The extension direction of the support groove 61 is parallel to the opening direction of the pull-out port 11, allowing the auxiliary charging base 30 to slide along a straight trajectory. The width of the support groove 61 can form a clearance fit with the lateral dimension of the auxiliary charging base 30, allowing the auxiliary charging base 30 to slide while limiting lateral displacement. The support groove 61 maintains the vertical stability of the auxiliary charging base 30 by wrapping the groove wall around it. The inlet end of the support groove 61 is flush with the inner edge of the pull-out port 11, ensuring that the auxiliary charging base 30 accurately enters the sliding path of the support groove 61 when retracted.

[0058] When the auxiliary charging base 30 retracts into the inner cavity of the bottom shell 10 through the pull-out opening 11, the extension direction of the support groove 61 provides path guidance for the auxiliary charging base 30. The groove wall of the support groove 61 contacts the side wall of the auxiliary charging base 30, limiting the lateral offset within a preset gap range. The bottom of the support groove 61 bears the gravity load of the auxiliary charging base 30, preventing it from sinking and causing the sliding trajectory to deviate. After the retraction action is completed, the end wall of the support groove 61 limits the auxiliary charging base 30, keeping its storage position axially aligned with the pull-out opening 11. This structure, through the dual effects of spatial constraint and path guidance, ensures that the auxiliary charging base 30 always moves along a predetermined trajectory during the retraction process, eliminating disorderly shaking. The fixed installation characteristics of the support groove 61 ensure the consistency of the path for each retraction action, thereby ensuring the smoothness of subsequent pull-out operations.

[0059] The above technical solution provides a stable spatial constraint and sliding path for the storage of the auxiliary charging base 30. The bracket 60 is fixed inside the bottom shell 10, and its support groove 61 communicates with the pull-out opening 11, allowing the auxiliary charging base 30 to slide to a predetermined position along the extension direction of the support groove 61 when retracted, preventing disorderly movement within the bottom shell 10 cavity. The supporting groove 61's enveloping effect on the auxiliary charging base 30 restricts its lateral displacement, ensuring alignment between the auxiliary charging base 30 and the pull-out opening 11 after retraction, maintaining the compactness of the internal structure of the wireless charging device and the reliability of the pull-out action. The design of the auxiliary charging base 30 being housed within the support groove 61 optimizes the utilization of the internal space of the device, avoiding structural bulkiness caused by interference between the auxiliary charging base 30 and other components within the bottom shell 10 cavity.

[0060] For example, such as Figures 7 to 9 As shown, the side wall of the auxiliary charging base 30 is provided with a guide rib 32, and the groove wall of the support groove 61 is provided with a guide groove 62. The guide groove 62 extends along the sliding direction of the auxiliary charging base 30, and the guide rib 32 and the guide groove 62 are slidably engaged.

[0061] The protruding structure of the guide rib 32 can be configured as a trapezoidal cross-section, a semi-circular cross-section, or a rectangular cross-section, and the cross-sectional shape of the guide groove 62 matches the cross-sectional shape of the guide rib 32. The extension direction of the guide groove 62 is parallel to the sliding axis of the auxiliary charging base 30. When the support groove 61 of the bracket 60 is connected to the pull-out port 11 of the bottom shell 10, the inlet end of the guide groove 62 can be provided with a chamfered structure so that the guide rib 32 can automatically correct its alignment during initial insertion.

[0062] After the guide rib 32 is embedded in the guide groove 62, its sidewall forms a surface contact constraint with the inner sidewall of the guide groove 62, preventing the auxiliary charging base 30 from undergoing lateral displacement or deflection during sliding. The extension direction of the guide groove 62 defines the movement trajectory of the guide rib 32. When the drive device 50 pushes the auxiliary charging base 30 through the gear 51 and rack 31 mechanism, the cooperation between the guide rib 32 and the guide groove 62 converts the driving force into linear motion. The constraint force exerted by the groove wall of the guide groove 62 on the guide rib 32 is perpendicular to the sliding direction. This rigid guide structure ensures that the auxiliary charging base 30 maintains a predetermined trajectory during extension or retraction, forming a stable dynamic engagement relationship with the support groove 61 of the bracket 60.

[0063] By setting guide ribs 32 on the side wall of the auxiliary charging base 30 and opening guide grooves 62 in the wall of the support groove 61 to match them, a physical constraint mechanism is constructed between the auxiliary charging base 30 and the support groove 61. The guide ribs 32 are embedded in the guide grooves 62 to form a spatial limiting relationship, forcibly limiting the auxiliary charging base 30 to linear movement only along the extension direction of the guide grooves 62, reducing the possibility of lateral deviation. The layout of the guide grooves 62 extending along the sliding direction ensures that the guide ribs 32 always maintain linear contact with the groove wall when moving in the groove, reducing sliding friction resistance. Through the continuous constraint of the groove wall on the guide ribs 32, the linearity of the movement trajectory of the auxiliary charging base 30 is maintained. This rigid guiding structure improves the stability of the extension and retraction of the auxiliary charging base 30, avoids sliding jamming caused by external force interference through mechanical limiting, and realizes rapid and precise switching between the storage and unfolded states of the auxiliary charging base 30.

[0064] For example, such as Figures 7 to 9 As shown, the groove walls at both ends of the guide groove 62 are used to stop the guide rib 32, thereby limiting the range of motion of the auxiliary charging base 30.

[0065] As the auxiliary charging base 30 slides along the support groove 61, the guide rib 32 moves linearly within the guide groove 62. When sliding to its maximum stroke, the end of the guide rib 32 contacts the end wall of the guide groove 62, and the kinetic energy is absorbed by the vertical surface of the groove wall. At this time, the reaction force provided by the groove wall counteracts the sliding driving force, causing the auxiliary charging base 30 to stop at a preset position. This physical limiting mechanism is linked to the gear 51 and rack 31 transmission system of the drive device 50. When the drive device 50 continuously outputs power, the meshing pressure between the gear 51 and rack 31 increases, triggering the overload protection circuit to cut off the power supply, thus providing dual protection.

[0066] Through the above technical solution, precise control of the movement range of the auxiliary charging base 30 is achieved. The groove walls at both ends of the guide groove 62 effectively limit the guide rib 32, preventing the auxiliary charging base 30 from exceeding the preset range during sliding. This design ensures that the auxiliary charging base 30 maintains a stable and controllable movement trajectory during use, avoiding it from detaching from the pull-out opening 11 due to excessive sliding travel. This improves the structural stability and reliability of the wireless charging device, allowing users to safely and smoothly operate the extension and retraction function of the auxiliary charging base 30.

[0067] For example, such as Figures 1 to 3 As shown, the bottom shell 10 has two pull-out openings 11, and there are two auxiliary charging bases 30. The two auxiliary charging bases 30 are movably installed at the two pull-out openings 11, so that each auxiliary charging base 30 can extend out of the pull-out opening 11 or retract into the inner cavity of the bottom shell 10. The second wireless charging module 40 is installed in each auxiliary charging base 30.

[0068] The two pull-out openings 11 can be positioned on the left and right sides of the bottom shell 10, respectively. When two devices need to be wirelessly charged simultaneously, the two auxiliary charging bases 30 can extend outward from the pull-out openings 11 on the left and right sides, respectively. The second wireless charging module 40 inside each auxiliary charging base 30 operates independently; for example, the left module outputs 5W and the right module outputs 7.5W, adapting to the charging needs of different devices. After charging is complete, the two auxiliary charging bases 30 retract back into the cavity of the bottom shell 10 along their original path. This design effectively meets the charging needs of multiple devices.

[0069] The above technical solution enables simultaneous charging of multiple devices while maintaining the compactness of the overall structure of the bottom shell 10. The two pull-out ports 11 allow the two auxiliary charging bases 30 to extend and retract independently, avoiding mutual interference. When not in use, both auxiliary charging bases 30 can be fully retracted into the cavity of the bottom shell 10, maintaining the device's miniaturized design. Each auxiliary charging base 30 contains a second wireless charging module 40, allowing both auxiliary charging bases 30 to independently charge different devices when extended, solving the problem that a single auxiliary charging base 30 cannot meet the needs of multiple devices. By corresponding multiple auxiliary charging bases 30 with multiple pull-out ports 11, the charging capacity is expanded, and the spatially staggered design ensures structural compactness during storage.

[0070] When the two auxiliary charging bases 30 retract into the inner cavity of the bottom shell 10 at the same time, if the two pull-out ports 11 are at the same horizontal position, the two auxiliary charging bases 30 will be arranged horizontally side by side inside the bottom shell 10, occupying a large horizontal space. This forces the width of the bottom shell 10 to increase, resulting in the wireless charging device still having a bulky problem.

[0071] For example, such as Figures 1 to 3 As shown, the two pull-out openings 11 are respectively opened on the left and right sides of the bottom shell 10 and staggered vertically, so that the two auxiliary charging bases 30 can be arranged vertically when retracted into the inner cavity of the bottom shell 10.

[0072] The position of the pull-out opening 11 is limited to different height areas on the left and right sides, and the vertical distance between the two pull-out openings 11 can be set to 10-30 mm, such as 15 mm or 25 mm. The staggered layout causes the projected areas of the two auxiliary charging bases 30 in the stored state to partially overlap along the height direction, thereby converting the horizontal arrangement into a vertical stacking.

[0073] The above technical solution effectively solves the problem of lateral space occupation when storing the two auxiliary charging docks 30. The staggered pull-out openings 11 structure allows the two auxiliary charging docks 30 to form a vertically stacked layout when retracted, converting the storage space that originally needed to be horizontally expanded into a vertically distributed layout. This space reconstruction method reduces the width of the bottom shell 10 while maintaining the ease of operation of the pull-out openings 11 on both sides. The vertical arrangement design eliminates the risk of the movement trajectories of the two charging docks intersecting during the sliding process, avoiding spatial interference of mechanical parts in the stored state. The vertically stacked structure also enhances the internal space utilization of the charging device, enabling the overall structure to be compact while maintaining the multi-device charging function.

[0074] For example, such as Figure 6 As shown, the wireless charging device also includes a bracket 60 installed inside the bottom shell 10. The bracket 60 has two vertically arranged support grooves 61. The two support grooves 61 are respectively connected to the two pull-out ports 11. After the two auxiliary charging bases 30 are retracted into the inner cavity of the bottom shell 10, they can be slidably accommodated in the two support grooves 61.

[0075] The bracket 60 is fixed inside the base shell 10, and the width of the support groove 61 transitions with the width of the sliding portion of the auxiliary charging base 30. The communication path between the support groove 61 and the pull-out port 11 is defined as a straight channel. In a preferred embodiment, the bracket 60 adopts a split structure, with each of the two support grooves 61 assembled from independent groove modules, which are connected by snap-fits or screws.

[0076] The bracket 60 is bolted to the inside of the base shell 10. Two support grooves 61 are arranged vertically at intervals, the spacing of which is determined by the vertical distance between the two auxiliary charging bases 30. When the auxiliary charging base 30 is retracted, its sliding trajectory is restricted within the guide range of the support groove 61. The inlet end of the support groove 61 forms a smooth transition with the pull-out opening 11, allowing the auxiliary charging base 30 to maintain horizontal movement during extension. Through the vertically arranged support groove 61 structure, the two auxiliary charging bases 30 form a stable stacked layout in the retracted state. The independent separation design of the support grooves 61 ensures that each auxiliary charging base 30 moves only along its corresponding track. This structure ensures smooth sliding while effectively preventing contact and collision between the two auxiliary charging bases 30 in the retracted state through physical isolation.

[0077] Through the above technical solution, the dual auxiliary charging bases 30 are layered and stored using independently arranged vertical support grooves 61, effectively avoiding contact and collision. The connection design between the support grooves 61 and the pull-out opening 11 ensures the straightness of the sliding path and prevents jamming caused by misalignment. The rigid structure of the support grooves 61 provides positioning constraints for the auxiliary charging bases 30, eliminating axial movement and radial swaying in the stored state. The layered storage structure is compactly arranged in the vertical direction, improving the utilization rate of the internal space of the bottom shell 10 while maintaining the same external dimensions of the device.

[0078] For example, such as Figure 5 As shown, the wireless charging device also includes a drive device 50 installed in the bottom shell 10. The output shaft of the drive device 50 is connected to a gear 51. The axis of the gear 51 extends along the height direction of the bottom shell 10. Both auxiliary charging bases 30 are provided with racks 31, and the racks 31 of both auxiliary charging bases 30 mesh with the gears 51.

[0079] The drive unit 50 is fixed inside the bottom shell 10 near the middle area, and the gear 51 is coaxially connected to the output end of the drive unit 50 through a shaft hole. The racks 31 of the two auxiliary charging bases 30 are located on the front and rear sides of the gear 51, respectively, and the extension direction of the racks 31 is consistent with the sliding direction of the auxiliary charging bases 30. The axis of the gear 51 is perpendicular to the support plane of the bottom shell 10.

[0080] When the drive unit 50 is activated, the gear 51 rotates around the vertical axis, driving the racks 31 on both sides to move in opposite directions. The meshing point between the racks 31 and the gear 51 is located within the support groove 61, ensuring that the auxiliary charging base 30 remains engaged with the gear 51 throughout the sliding process. This drive method allows the two auxiliary charging bases 30 to share the same axial space for the gear 51, avoiding the problem of increased thickness of the base shell 10 caused by horizontally arranged gears 51. At the same time, a single drive unit 50 achieves bidirectional synchronous drive, reducing the number of parts and assembly complexity.

[0081] Through the above technical solution, synchronous driving of the two auxiliary charging bases 30 arranged in a staggered manner within a limited vertical space is achieved. The meshing structure of a single gear 51 and a double rack 31 replaces the dual drive device 50, effectively simplifying the complexity of the transmission system. The meshing transmission method of the gear 51 and rack 31 ensures the synchronicity and directional controllability of power transmission, enabling the two auxiliary charging bases 30 to maintain precise correspondence of their motion trajectories during reverse sliding, while also reducing the space occupied by the drive components inside the bottom shell 10.

[0082] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A pull-out wireless charging device, comprising: include: The bottom shell has a pull-out opening on its side wall; A secondary charging dock is movably mounted at the pull-out opening so that the secondary charging dock can extend out of the pull-out opening or be completely retracted into the inner cavity of the bottom shell. A wireless charging module is provided inside the secondary charging dock. The auxiliary charging dock is equipped with a telescopic slide bar, which allows the wireless charging module to extend further outward.

2. The pull-out wireless charging device as described in claim 1, characterized in that, The pull-out wireless charging device also includes a drive device installed inside the bottom shell. The output shaft of the drive device is connected to the auxiliary charging base to drive the auxiliary charging base to slide.

3. The pull-out wireless charging device as described in claim 2, characterized in that, The auxiliary charging base is connected to a rack, and the output shaft of the drive device is connected to a gear, with the rack meshing with the gear.

4. The pull-out wireless charging device as described in claim 1, characterized in that, The pull-out wireless charging device also includes a bracket installed inside the bottom shell. The bracket has a support groove that communicates with the pull-out opening. The auxiliary charging base can be slidably accommodated in the support groove after retracting into the inner cavity of the bottom shell.

5. The pull-out wireless charging device as described in claim 4, characterized in that, The auxiliary charging base has a protruding guide rib on its side wall, and the support groove has a guide groove on its groove wall. The guide groove extends along the sliding direction of the auxiliary charging base, and the guide rib and the guide groove are slidably engaged.

6. The pull-out wireless charging device as described in claim 5, characterized in that, The groove walls at both ends of the guide groove are used to stop the guide ribs, thereby limiting the range of motion of the auxiliary charging base.

7. The pull-out wireless charging device as described in any one of claims 1-6, characterized in that, The bottom shell has two pull-out openings, and there are two auxiliary charging bases. The two auxiliary charging bases are movably installed at the two pull-out openings, so that each auxiliary charging base can extend out of the pull-out opening or retract into the inner cavity of the bottom shell. Each auxiliary charging base is equipped with a wireless charging module.

8. The pull-out wireless charging device as described in claim 7, characterized in that, The two pull-out openings are respectively opened on the left and right sides of the bottom shell and are staggered vertically, so that the two auxiliary charging bases can be arranged vertically when retracted into the inner cavity of the bottom shell, and the ends of the two auxiliary charging bases partially overlap when fully extended from the pull-out openings.

9. The pull-out wireless charging device as described in claim 8, characterized in that, The pull-out wireless charging device also includes a bracket installed inside the bottom shell. The bracket has two support slots arranged vertically. The two support slots are respectively connected to the two pull-out openings. After the two auxiliary charging bases retract into the inner cavity of the bottom shell, they can be slidably accommodated in the two support slots.

10. The pull-out wireless charging device as described in claim 8, characterized in that, The pull-out wireless charging device also includes a drive device installed inside the bottom shell. The output shaft of the drive device is connected to a gear, the axis of which extends along the height direction of the bottom shell. Both auxiliary charging seats are provided with racks, and the racks of both auxiliary charging seats mesh with the gear.

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