A multi-functional tablet charging stand

Abstract

This utility model discloses a multifunctional tablet charging stand, which includes a base plate, a support rod, a support plate, and a first and a second rotating shaft. The bottom of the support rod is rotatably connected to the base plate via the first rotating shaft, and the top is rotatably connected to the support plate via the second rotating shaft, enabling multi-angle adjustment. The support plate is provided with charging contacts for contact charging of the tablet. The base plate integrates wireless charging modules for mobile phones, watches, and headphones, respectively adapting to the charging needs of different devices. The protruding design of the mobile phone wireless charging module facilitates charging of mobile phones with cameras; the watch wireless charging module can be rotated upright to accommodate stand-up charging of watch strap devices. The main control circuit board is integrated into the base plate or support rod, supports multiple wireless charging protocols, and has overvoltage, overcurrent, and overheat protection functions. This utility model has high integration, strong adaptability, can charge multiple devices simultaneously, optimizes the charging experience, reduces cable clutter, and is highly practical.

Description

Technical Field

[0001] This utility model provides a multifunctional tablet computer charging stand, belonging to the technical field of smart device charging and support devices, and particularly relates to an integrated stand device that can simultaneously provide wired and wireless charging for multiple electronic devices such as tablet computers, mobile phones, smartwatches, and wireless headphones. Background Technology

[0002] With the widespread adoption of smart devices, users typically own multiple devices such as tablets, mobile phones, smartwatches, and wireless earphones. These devices require frequent charging in daily use, and traditional charging methods often necessitate multiple chargers and charging cables, which not only take up space but also create messy wiring and inconvenience. Furthermore, the different charging interfaces and charging methods of various devices further increase the complexity of charging for users.

[0003] Currently available charging stands offer limited functionality, mostly supporting only a single device or, while supporting multiple devices, failing to meet the charging posture requirements of different devices simultaneously. For example, phones with protruding cameras cannot fit snugly against the charging pad when wirelessly charged while laid flat, resulting in low charging efficiency; smartwatches with straps are also inconvenient to charge when laid flat. Therefore, there is an urgent need for a highly integrated, adaptable, and user-friendly multi-device charging stand. Utility Model Content

[0004] In view of this, the present invention provides a multifunctional tablet charging stand, which aims to solve the problems of inconvenience in charging multiple devices, low charging efficiency, and poor device compatibility in the prior art.

[0005] This utility model is achieved through the following technical solution:

[0006] A multifunctional tablet charging stand includes a base plate, a support rod, a support plate, a first pivot, and a second pivot. The bottom of the support rod is rotatably connected to the base plate via the first pivot, allowing for pitch angle adjustment. The top of the support rod is rotatably connected to the support plate via the second pivot, enabling the support plate to rotate at multiple angles to accommodate different viewing angles. The support plate is equipped with charging contacts for contact charging of the tablet.

[0007] The base plate integrates wireless charging modules for mobile phones, watches, and headphones. A main control circuit board is located inside the base plate or support rod, which is electrically connected to the charging contacts and each wireless charging module, enabling simultaneous or time-sharing charging management for multiple devices.

[0008] Furthermore, the wireless charging module for mobile phones protrudes from the upper surface of the base plate and integrates a wireless charging coil and a magnet inside, which can adapt to mobile phones with protruding cameras, improving charging fit and efficiency.

[0009] The wireless charging module for the watch is rotatably installed in a groove on the surface of the base plate, and has a stored state and an upright state: when stored, it can charge watches without a watch strap when laid flat; when upright, it can charge watches with a watch strap when standing.

[0010] The main control circuit board integrates a wireless charging control unit, a power management unit, and a microprocessor. It supports multiple wireless charging protocols and has multiple protection mechanisms such as overvoltage, overcurrent, and overheating to ensure charging safety.

[0011] The support rod has a light groove on its back or side, which can be used to lay charging cables and install light strips. The outside is covered with a light-transmitting plate, which is both aesthetically pleasing and provides a light effect indication of the charging status.

[0012] Several magnets are embedded in the support plate to fix the tablet computer in place by magnetic attraction, thus improving stability. A rotating head can also be installed between the second pivot and the support plate to enable horizontal rotation of the screen, adapting to both landscape and portrait usage requirements.

[0013] A charging interface is provided at the base plate or the first pivot point for connecting to an external power source. The wireless charging modules for mobile phones, watches, and earphones can be arranged in a straight line or in a triangle on the base plate, and the base plate can be rectangular, circular, or elliptical in shape, taking into account both aesthetics and practicality.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] Highly integrated: It provides a one-stop solution for the charging needs of four major categories of devices: tablets, mobile phones, watches, and headphones, reducing the number of charging devices and optimizing the use of space.

[0016] Highly adaptable: Through modular design and movable structure, it adapts to the form and charging method of different devices, improving charging efficiency and user experience.

[0017] Safe and reliable: Built-in intelligent power management unit supports multiple charging protocols and protection mechanisms to ensure safe and stable charging process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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 these drawings without creative effort.

[0019] Figure 1 , 2 This is an overall schematic diagram of Embodiment 1 of the present utility model;

[0020] Figure 3 This is an exploded view diagram provided for Embodiment 1 of the present invention;

[0021] Figure 4 This is an overall schematic diagram of Embodiment 2 of the present utility model;

[0022] Figure 5 This is a schematic diagram illustrating the use of Embodiment 2 of the present invention;

[0023] Figure 6 This is an exploded view diagram provided for Embodiment 2 of this utility model.

[0024] The following are the labeling elements in the figure:

[0025] 1. Base plate; 11. First pivot; 12. Bottom cover; 13. Main control circuit board; 2. Support rod; 21. Second pivot; 3. Support plate; 31. Rotating head; 32. Contact point; 33. Cover plate; 34. Magnet slot; 35. Support plate; 36. Magnet; 4. Mobile phone wireless charging module; 41. Wireless charging coil; 5. Watch wireless charging module; 6. Headphone wireless charging module; 7. Charging interface; 8. Transparent plate; 81. Light trough; 9. Tablet computer.

[0026] The accompanying drawings have illustrated specific embodiments of the present invention, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0027] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] To make the technical solution and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] Please see Figures 1 to 3 This embodiment provides a multifunctional tablet computer charging stand, which mainly includes a base plate 1, a support rod 2, a support plate 3, a first rotating shaft 11, and a second rotating shaft 21.

[0031] The base plate 1 serves as the foundation component of the entire support structure. A main control circuit board 13 can be installed inside or at its bottom for unified management of power distribution and communication control. The upper surface of the base plate 1 integrates a mobile phone wireless charging module 4, a watch wireless charging module 5, and an earphone wireless charging module 6. These modules can be arranged in a straight line or in a triangular arrangement, depending on actual needs. The base plate 1 can be designed in a rectangular, circular, or elliptical shape, balancing aesthetics and practicality.

[0032] The bottom of the support rod 2 is rotatably connected to the base plate 1 via a first pivot 11, allowing the user to adjust the pitch angle of the support rod 2 according to usage habits and viewing requirements. The top of the support rod 2 is rotatably connected to the support plate 3 via a second pivot 21, enabling the support plate 3 to be adjusted in multiple degrees of freedom, further adapting to different usage scenarios.

[0033] The support plate 3 is used to support and fix the tablet computer 9. Its front side is provided with charging contacts 32 for contacting the tablet computer's charging interface for wired charging. To further enhance the stability of the tablet computer, several magnets 36 are also embedded inside the support plate 3 to assist in fixing the device via magnetic attraction and prevent it from slipping when adjusting the angle.

[0034] The wireless charging module 4 protrudes from the upper surface of the base plate 1, and integrates a wireless charging coil 41 and a magnet inside. It is particularly suitable for mobile devices with protruding cameras that have become common in recent years. This design can effectively improve the fit between the device and the charging module, avoiding the problem of reduced charging efficiency caused by the height of the camera module.

[0035] The wireless charging module 5 for the watch is installed in the groove on the upper surface of the base plate 1 via a pivot structure, and has two usage states: when stored, the upper surface of the module is flush with the base plate, which is suitable for smartwatches without a watch strap or with a flat design; when standing, the module can rotate at a certain angle to form an inclined support, which makes it easy for smartwatches with watch straps to be charged in a standing position, significantly improving the convenience of use.

[0036] The earphone wireless charging module 6 is also integrated on the base plate 1, and can be used to charge the wireless earphone charging case that conforms to Qi or other wireless charging standards. Its placement takes into full consideration user operating habits and electromagnetic compatibility between devices to avoid signal interference.

[0037] The main control circuit board 13, serving as the control core of the entire charging system, is fixedly installed in the bottom cavity of the base plate 1. Its core is a microprocessor (MCU), preferably a low-power, high-performance microcontroller with an ARM Cortex-M series core, used to coordinate the charging logic and status management of the entire bracket. The wireless charging control unit on the main control circuit board 13 consists of multiple independent wireless charging chips and their peripheral circuits. Specifically, the mobile phone wireless charging module 4, the watch wireless charging module 5, and the earphone wireless charging module 6 are each driven by their corresponding wireless charging chips. These wireless charging chips are preferably integrated chips supporting mainstream wireless charging protocols such as Qi and PPDE (e.g., Texas Instruments' BQ series or IDT's solutions), and each chip is independently connected to its corresponding wireless charging coil 41. The microprocessor (MCU) connects to each wireless charging chip via communication buses such as I2C or SPI, monitoring and controlling the charging status of each module in real time (e.g., charging power, FOD (Foreign Object Detection) status, charging completion rate), and can automatically turn the corresponding module on or off according to the detected device type to achieve energy efficiency optimization. The power management unit (PMU) is also integrated on the main control circuit board 13, and its core is a multi-channel power management integrated circuit (PMIC). This unit receives power input from an external power adapter (typically a 60W (20V / 3A) or higher PD protocol adapter) via the charging interface 7 to meet the simultaneous charging needs of tablets (up to 35W), mobile phones (up to 15W), watches (up to 5W), and headphones (up to 5W). The PMIC converts and distributes the input voltage into multiple independent stable voltages, powering the microprocessor, each wireless charging chip, and status indicator lights. For comprehensive safety protection, this unit includes the following hardware protection circuits:

[0038] Overvoltage protection (OVP): The input voltage is sampled in real time using a voltage monitoring chip. Once the input voltage exceeds a preset threshold (e.g., 23V), the main power supply circuit is immediately cut off via a MOSFET switch.

[0039] Overcurrent Protection (OCP): A precision sampling resistor is connected in series in the output circuit of each charging module. The sampling signal is amplified by an operational amplifier and sent to the ADC pin of the MCU for monitoring. When the current in any channel continuously exceeds the set value, the MCU will send a command to shut down the corresponding wireless charging chip.

[0040] Overheat protection (OTP): An NTC (negative temperature coefficient) thermistor is attached to a critical heat-generating area on the motherboard (such as near the wireless charging chip). Its resistance value changes with temperature and is monitored in real time by the MCU. When the temperature exceeds the safe limit (such as 75°C), the MCU will reduce the power or completely stop charging until the temperature drops back to the safe range.

[0041] The main control circuit board 13 also integrates a status indication control circuit, which is directly controlled by the GPIO pins of the MCU. Based on the real-time status information (such as standby, charging, fully charged, and error) obtained from each wireless charging chip, the MCU drives the RGB LED strip installed in the light slot 81 through PWM (pulse width modulation) signals to emit dynamic light effects of different colors (such as blue breathing to indicate charging, green solid to indicate fully charged, and red flashing to indicate error) and different modes, providing users with intuitive visual feedback.

[0042] A light trough 81 extending along the length of the support rod 2 is provided on the back, which can be used to hide wiring, store power cables, and maintain a clean appearance. LED light strips can also be installed in the light trough 81, and light can be transmitted outward through the light-transmitting plate 8 to form a variety of lighting effects, used to indicate charging status, power level, or connection status, enhancing the product's technological feel and user experience.

[0043] In addition, a rotating head 31 can be set between the second pivot 21 and the support plate 3, so that the user can rotate the support plate 3 and the tablet computer fixed on it horizontally, easily switch between landscape and portrait modes, and adapt to different usage needs such as video viewing, reading and office work.

[0044] A charging port 7 is located near the base plate 1 or the first pivot 11 for connecting an external power adapter to power the main control circuit board 13 and each charging module. This port can be designed as a universal interface such as USB-C to improve compatibility and ease of use.

[0045] Example 2

[0046] like Figures 4 to 6 As shown, this embodiment has made some structural optimizations based on embodiment 1, which further improves the practicality and adaptability of the product.

[0047] In this embodiment, the charging contacts 32 on the front of the support plate 3 are redesigned and placed on the bottom support plate 35. The support plate 35 can cooperate with the support plate 3 to support the lower edge of the tablet computer, providing a more stable support effect, while making the position of the charging contacts more concealed and reducing the impact on the appearance.

[0048] The main control circuit board 13 is mounted on the bottom of the base plate 1 and is sealed and protected by the bottom cover 12, effectively preventing dust and shock and extending its service life. This layout also facilitates heat dissipation, preventing the device from overheating due to prolonged high-load charging.

[0049] The light-transmitting panel 8 and the light trough 81 have been moved from the back of the support rod 2 to its sides, making the light effect indicators more obvious and providing more flexibility for cable management. Users can observe the charging status from multiple angles, enhancing the interactive experience.

[0050] The position of the first pivot 11 is also optimized to the top edge of the base plate 1, which makes the support rod 2 more stable when adjusting the pitch angle, the structure is more compact, and the overall footprint is reduced.

[0051] The structure and function of other parts are the same as in Embodiment 1, including the layout and function of the wireless charging module for mobile phones, watches, and earphones, the magnetic fixing method, the rotating head structure, and intelligent power management, etc., which will not be described in detail here.

[0052] This invention integrates multiple charging functions into a single, highly integrated design, significantly optimizing the management and user experience of charging equipment. Its modular and adjustable structure fully considers the physical form and charging needs of different devices. Combined with intelligent power management and status indication functions, it greatly enhances user convenience and visual appeal while ensuring charging safety and efficiency.

[0053] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

[0054] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the foregoing claims.

[0055] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. The terms "upper end," "lower end," "left side," "right side," "front end," "rear end," and similar expressions used herein refer to the positional relationship with reference to the accompanying drawings.

[0056] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A multi-functional tablet charging stand, characterized by: The device includes a base plate (1), a support rod (2), a support plate (3), a first rotating shaft (11), and a second rotating shaft (21). The bottom of the support rod (2) is rotatably connected to the base plate (1) via the first rotating shaft (11), and its top is rotatably connected to the support plate (3) via the second rotating shaft (21). The support plate (3) is provided with charging contacts (32) for charging a tablet computer. The base plate (1) integrates a mobile phone wireless charging module (4), a watch wireless charging module (5), and an earphone wireless charging module (6). The base plate (1) or the support rod (2) is provided with a main control circuit board (13), which is electrically connected to the charging contacts (32) and each wireless charging module (4, 5, 6).

2. The multi-functional tablet charging stand of claim 1, wherein: The mobile phone wireless charging module (4) protrudes from the upper surface of the base plate (1) and integrates a wireless charging coil (41) and a magnet inside, for use with mobile devices with protruding cameras.

3. The multi-functional tablet charging stand of claim 1, wherein: The watch wireless charging module (5) is rotatably installed in the groove on the upper surface of the base plate (1), and has a retracted state and an upright state. When it is in the retracted state, its upper surface is flush with the upper surface of the base plate (1). When it is in the upright state, it forms an angle with the upper surface of the base plate (1) to accommodate the charging of wearable devices of different shapes.

4. The multi-functional tablet charging stand of claim 1, wherein: The main control circuit board (13) integrates a wireless charging control unit, a power management unit and a microprocessor. The wireless charging control unit supports multiple wireless charging protocols, and the power management unit is used to distribute power and provide overvoltage, overcurrent and overheat protection.

5. The multi-functional tablet charging stand of claim 1, wherein: The support rod (2) has a light groove (81) extending along its length on its back or side. The light groove (81) is used to accommodate the light strip and provide wiring space for the cable. Its outer side is covered with a light-transmitting plate (8).

6. The multi-functional tablet charging stand of claim 1, wherein: The support plate (3) is embedded with several magnets (36) for fixing the tablet computer to be charged by magnetic attraction.

7. The multi-functional tablet charging stand of claim 1, wherein: A rotating head (31) is also provided between the second rotating shaft (21) and the support plate (3), and the rotating head (31) is used to realize the rotation of the support plate (3).

8. The multi-functional tablet charging stand of claim 1, wherein: A charging interface (7) is provided on the base plate (1) or the first rotating shaft (11). The charging interface (7) is electrically connected to the main control circuit board (13) and is used to connect to an external power source. The charging contact (32) is installed on the support plate (35) on the front or bottom of the support plate (3).

9. The multi-functional tablet charging stand of claim 4, wherein: The main control circuit board (13) also integrates a status indication control circuit, which is electrically connected to a lamp strip disposed in the lamp slot (81) and is used to control the lamp strip to emit different colors or modes of light effects according to the charging status.

10. The multi-functional tablet charging stand of claim 1, wherein: The wireless charging module (4) for mobile phones, the wireless charging module (5) for watches, and the wireless charging module (6) for headphones are arranged in a straight line or in a triangle on the base plate (1). The base plate (1) has a shape including rectangle, circle, and ellipse.

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