NFC wireless charging device

Abstract

The utility model discloses an NFC wireless charging device which comprises an upper shell, a lower shell, a charging limiting piece, a clamping air bag, a charging integrated control module, a charging external interface and a miniature air pump, the lower shell and the upper shell jointly form a containing cavity, the charging limiting piece is installed on the upper shell, a containing groove used for containing a ring to be charged is formed in the charging limiting piece, and the clamping air bag is installed in the containing cavity. A conical convex face is arranged at the bottom of the containing groove, the clamping air bag is detachably installed on the inner circumferential side of the containing groove, the charging integrated control module is arranged in the containing cavity, the sensing end of the charging integrated control module abuts against the bottom end of the charging limiting piece, and the micro air pump is used for supplying air to the clamping air bag. According to the utility model, through introducing the clamping air bag and the conical convex surface, adaptive positioning and stable clamping of to-be-charged rings of different sizes and specifications are realized, accurate alignment between the to-be-charged rings of the same specification and a built-in induction coil during charging is ensured, fluctuation of wireless charging efficiency caused by placing randomness is avoided, and the energy storage module is used, so that the wireless charging efficiency is improved. And the requirement of mobile charging is met.

Description

Technical Field

[0001] The utility model relates to the technical field of charging devices for wearable devices, in particular to an NFC wireless charging device. Background Art

[0002] With the rapid development of wearable technology, smart rings, as a type of miniature smart device that integrates health monitoring, life assistance and other functions, are gradually integrated into people's daily lives. These devices provide users with personalized health management solutions by accurately monitoring key health indicators such as heart rate, blood oxygen, and sleep quality. However, the widespread use of smart rings faces a significant technical challenge - the balance between charging convenience and cost-effectiveness.

[0003] Traditionally, smart rings are mostly charged by wires, and a charging interface of a specific size needs to be customized according to the user's finger circumference, which not only increases production costs, but also limits the market penetration of the product. To solve this problem, wireless charging technology came into being, aiming to achieve flexible charging of smart rings through contactless energy transmission, thereby avoiding the cumbersome and high cost of customized charging interfaces. However, although the existing wireless charging stations provide a compatible charging platform for smart rings of multiple specifications in design, they are often accompanied by problems such as bulky size and inaccurate positioning. While the large-size platform improves compatibility, it also increases the risk of the ring leaving the charging area due to shaking or external collision during charging, resulting in charging interruption or significantly reduced efficiency, and it is difficult to meet the needs of mobile charging outside. In addition, the efficiency of wireless charging is highly dependent on the precise alignment between the smart ring and the built-in induction coil. When the user places the ring at will, it is difficult to ensure that the optimal alignment can be achieved every time the charging is performed. The randomness of this alignment directly leads to fluctuations in wireless charging efficiency, which in turn affects the battery life and user experience of the smart ring. Utility Model Content

[0004] In view of this, the utility model aims to solve the deficiencies in the prior art, and its main purpose is to provide an NFC wireless charging device, which solves the technical problems that traditional smart ring wireless charging devices are easily separated from the charging area due to shaking or external collision during the charging process, and when users place the smart rings at random for charging, there is randomness in alignment, resulting in large fluctuations in wireless charging efficiency, which in turn affects the battery life of the smart rings and the user experience.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides an NFC wireless charging device, comprising:

[0007] The upper shell is provided with a mounting groove;

[0008] A lower shell is installed at the bottom of the upper shell and forms a receiving cavity together with the upper shell, and the installation groove is communicated with the receiving cavity;

[0009] A charging limiter is installed on the installation groove, and a placement groove is provided on the charging limiter. The placement groove is used to place the ring to be charged, and a conical convex surface is provided at the bottom of the placement groove;

[0010] A clamping airbag is detachably mounted on the inner peripheral side of the placement groove, and is used to adapt to and firmly clamp the ring to be charged. A pressure sensor is also provided between the clamping airbag and the charging limiter;

[0011] A charging integrated control module is disposed in the accommodating cavity and mounted on the lower housing, a sensing end of the charging integrated control module abuts against a bottom end of the charging limiter, and the charging integrated control module is electrically connected to the pressure sensor;

[0012] A charging external interface is arranged on the side of the charging integrated control module and is used to connect an external power source. The upper shell is provided with an avoidance slot corresponding to the charging external interface;

[0013] A micro air pump is arranged in the accommodating cavity and is used to supply air to the clamping airbag. The micro air pump is electrically connected to the charging integrated control module.

[0014] As a preferred solution, it also includes an energy storage module, which is arranged between the charging integrated control module and the micro air pump and installed on the lower shell. The air supply end of the micro air pump is connected to the clamping airbag through a micro air tube. The charging limit member is provided with an airway through hole for installing the micro air tube. The charging integrated control module and the micro air pump are also electrically connected to the energy storage module.

[0015] As a preferred solution, a plurality of pads are further provided on a side of the lower shell away from the upper shell, and the pads are provided with rough textures.

[0016] As a preferred solution, the cushion block is a magnetic block, the cushion block is "L-shaped", and is arranged at the corner inflection point of the lower shell.

[0017] As a preferred solution, the slope of the conical convex surface is no more than 30°.

[0018] As a preferred solution, a mounting ring groove is opened on the inner circumference of the placement groove, the clamping airbag is installed on the mounting ring groove, the pressure sensor is arranged at the bottom of the mounting ring groove and is in contact with the side of the clamping airbag close to the charging limit member.

[0019] As a preferred solution, the micro air pump is arranged beside the charging integrated control module and is fixedly mounted on the lower shell through a mounting block.

[0020] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that it mainly realizes adaptive positioning and stable clamping of rings to be charged of different sizes and specifications by introducing clamping airbags and conical convex surfaces, effectively preventing potential damage to the device caused by over-tight clamping, while ensuring the precise alignment between the same specification of charged rings and the built-in induction coil during charging, avoiding fluctuations in wireless charging efficiency caused by random placement, and thereby improving the battery life and user experience of the rings to be charged. The use of the energy storage module enhances the autonomous power supply capability of the device, provides a guarantee for emergency use, and meets the portable requirements of mobile charging.

[0021] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of an NFC wireless charging device according to an embodiment of the present utility model;

[0023] Figure 2 is a schematic diagram of an NFC wireless charging device from another perspective of an embodiment of the present utility model;

[0024] Figure 3 This is a cross-sectional view of the structure of an NFC wireless charging device according to an embodiment of the present utility model;

[0025] Figure 4 It is a schematic diagram of the structure decomposition of an NFC wireless charging device according to an embodiment of the present utility model.

[0026] Description of reference numerals:

[0027] 10. Upper shell; 11. Mounting slot; 12. Avoidance slot;

[0028] 20. lower shell; 21. cushion block;

[0029] 30. Charging limiter; 31. Placement groove; 32. Conical convex surface; 33. Mounting ring groove; 34. Accommodation cavity;

[0030] 40. Clamp the airbag;

[0031] 50. Charging integrated control module;

[0032] 60. Charging external interface;

[0033] 70. Micro air pump; 71. Mounting block;

[0034] 80. Ring to be charged;

[0035] 90. Energy storage module. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0038] With the rapid progress of wearable technology, smart rings, as miniature smart devices that integrate health monitoring and life assistance functions, are gradually penetrating into the field of daily life. Its core lies in accurately tracking key health parameters such as heart rate, blood oxygen saturation and sleep quality, and personalizing health management strategies. However, its widespread popularity has encountered bottlenecks in charging convenience and cost-effectiveness. Traditional wired charging is limited by customized interfaces, which has pushed up manufacturing costs and limited market potential. Therefore, wireless charging technology has emerged, aiming to achieve convenient charging of smart rings through a contactless energy transmission mechanism, avoiding the high cost of interface customization. However, although the current wireless charging stand design takes into account the compatibility of multiple specifications of rings, it faces the challenges of large size and insufficient positioning accuracy. Although the large-size platform enhances compatibility, it also increases the instability factors in the charging process, such as charging interruptions caused by shaking and collisions, and is not portable in mobile scenarios. In addition, the efficiency of wireless charging is heavily dependent on the precise alignment of the ring and the induction coil. The alignment deviation caused by random placement of users directly causes efficiency fluctuations. In the long run, it is easy to affect battery durability and weaken user experience.

[0039] To solve the above problems, please refer to Figures 1 to 4 , the utility model embodiment provides an NFC wireless charging device, including:

[0040] The upper shell 10 is provided with a mounting groove 11 .

[0041] The lower shell 20 is installed at the bottom of the upper shell 10 and forms a receiving cavity 34 together with the upper shell 10 to provide sufficient installation space for the installation of internal components. The installation groove 11 is communicated with the receiving cavity 34 .

[0042] The charging limiter 30 is installed on the installation groove 11. A placement groove 31 is provided on the charging limiter 30. The placement groove 31 is used to place the ring 80 to be charged. Here, the placement groove 31 can accommodate rings 80 to be charged of different specifications. A conical convex surface 32 is provided at the bottom of the placement groove 31, which plays a preliminary positioning guide role, further enhances the positioning stability of the equipment, reduces deviation, and provides an adjustment basis for subsequent automatic position correction.

[0043] The clamping airbag 40 can be detachably mounted on the inner circumference of the placement groove 31, and is used to adapt to and firmly clamp the ring 80 to be charged, meet the clamping and fixing requirements of the rings 80 to be charged of different specifications, ensure the safety and stability of the charging process, avoid shaking or collision from leaving the charging area, and cooperate with the conical convex surface 32 for positioning, so that the rings 80 to be charged of the same specifications can be accurately aligned with the built-in induction coil of the NFC wireless charging device during charging, ensuring the accuracy of each placement, so that the ring 80 to be charged is in the best alignment state, avoiding the problem of fluctuations in wireless charging efficiency caused by the randomness of the alignment of the traditional wireless charging seat, and a pressure sensor is also provided between the clamping airbag 40 and the charging limiter 30 to monitor the clamping force in real time to ensure the safety of the equipment.

[0044] The charging integrated control module 50, as the core of the entire system, is arranged in the accommodating cavity 34 and is firmly mounted on the lower shell 20. The sensing end of the charging integrated control module 50 abuts against the bottom end of the charging limit member 30 to realize wireless charging control. In addition, the charging integrated control module 50 is electrically connected to the pressure sensor to realize intelligent monitoring and adjustment of the clamping state.

[0045] The charging external interface 60 is arranged on the side of the charging integrated control module 50 for connecting an external power source. The upper shell 10 is provided with an avoidance groove 12 corresponding to the charging external interface 60 to ensure smooth use of the interface.

[0046] The micro air pump 70 is arranged in the accommodating chamber 34 and is used to supply air to the clamping airbag 40. The micro air pump 70 is electrically connected to the charging integrated control module 50. This design provides a stable air source for the clamping airbag 40, ensures dynamic adjustment and precise control of the clamping force, and improves user experience and charging efficiency.

[0047] In this embodiment, an energy storage module 90 is also included. The energy storage module 90 is arranged between the charging integrated control module 50 and the micro air pump 70, which not only optimizes the internal layout, but also realizes the effective storage and distribution of energy, ensures the long-term stable operation of the equipment, cooperates with the clamping airbag 40, meets the needs of mobile charging, and the energy storage module 90 is installed on the lower shell 20, which improves the stability and safety of the overall structure. The air supply end of the micro air pump 70 is connected to the clamping airbag 40 through a micro air pipe, which realizes the fast and accurate filling and deflation of the clamping airbag 40, effectively enhancing the fixing effect during charging and the convenience during taking and placing. An airway through hole for installing a micro air pipe is opened on the charging limit member 30. The charging integrated control module 50 and the micro air pump 70 are also electrically connected to the energy storage module 90, ensuring that the equipment can still obtain immediate energy supply and respond quickly to control instructions in the absence of an external power supply, further improving the functional integration and user experience of the wireless charging stand.

[0048] A plurality of pads 21 are provided on the side of the lower shell 20 away from the upper shell. The pads 21 are provided with rough patterns. The setting of the pads 21 not only enhances the stability of the wireless charging stand on the placement surface and prevents displacement caused by slight collisions, but also the design of the rough patterns further enhances the friction with the contact surface, thereby achieving a stable placement effect even on a smooth surface, effectively ensuring stability and safety during the charging process.

[0049] Furthermore, the pad 21 is a magnetic block, which not only retains the stable supporting function of the original pad 21, but also gives the NFC wireless charging device more flexibility in usage scenarios. The pad 21 is "L-shaped" and is arranged at the turning point of the corner of the lower shell 20, which effectively prevents the wear of the corners of the lower shell 20 and improves the overall durability.

[0050] The slope of the conical convex surface 32 is no more than 30°. This design fully considers the convenience and stability requirements of the user when placing the ring 80 to be charged. The moderate slope not only facilitates the ring 80 to be charged to slide easily into the charging area and achieve initial positioning, but also ensures the stable posture of the ring 80 to be charged when placed, avoiding the position uncertainty caused by the randomness of the placement.

[0051] Among them, the charging integrated control module 50 includes an induction antenna, which is arranged at the bottom of the charging limit member 30. In a preferred embodiment, the induction antenna is ring-shaped and is mounted on the bottom of the charging limit member 30 so that the sensing range can evenly cover the entire charging limit member 30.

[0052] Furthermore, an installation ring groove 33 is opened on the inner side of the placement groove 31, and the clamping airbag 40 is installed on the installation ring groove 33 through a clamping member. The setting of the installation ring groove 33 not only provides a stable installation foundation for the installation of the clamping airbag 40, but also ensures that the clamping airbag 40 can be evenly distributed in the groove. Through the elastic deformation ability of the clamping airbag 40, it can closely fit the outer peripheral edge of the ring 80 to be charged of different specifications to achieve a personalized clamping effect. At the same time, the pressure sensor is arranged at the bottom of the installation ring groove 33 and is connected to the side of the clamping airbag 40 close to the charging limiter 30 to monitor the clamping state of the clamping airbag 40, thereby intelligently adjusting the clamping force, which not only ensures the stability of the ring 80 to be charged during the charging process, but also avoids indentations, slight deformation or other damage caused by over-tight clamping.

[0053] The micro air pump 70 is arranged beside the charging integrated control module 50 and is fixedly mounted on the lower housing 20 through a mounting block 71, thereby optimizing the overall layout, making the structure compact and easy to carry.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An NFC wireless charging device, characterized in that: include: The upper housing (10) is provided with a mounting groove (11); A lower shell (20) is installed at the bottom of the upper shell (10) and forms a receiving cavity (34) together with the upper shell (10); the installation groove (11) is in communication with the receiving cavity (34); A charging limiter (30) is installed on the installation groove (11), a placement groove (31) is provided on the charging limiter (30), the placement groove (31) is used to place the ring (80) to be charged, and a conical convex surface (32) is provided at the bottom of the placement groove (31); A clamping airbag (40) is detachably mounted on the inner circumference of the placement groove (31) and is used to adapt to and firmly clamp the ring (80) to be charged. A pressure sensor is also provided between the clamping airbag (40) and the charging limiter (30); A charging integrated control module (50) is arranged in the accommodating cavity (34) and mounted on the lower housing (20); a sensing end of the charging integrated control module (50) abuts against a bottom end of the charging limiter (30); and the charging integrated control module (50) is electrically connected to the pressure sensor; A charging external interface (60) is arranged on the side of the charging integrated control module (50) and is used to connect an external power source. The upper housing (10) is provided with an avoidance slot (12) corresponding to the charging external interface (60); A micro air pump (70) is arranged in the accommodating cavity (34) and is used to supply air to the clamping airbag (40). The micro air pump (70) is electrically connected to the charging integrated control module (50).

2. The NFC wireless charging device according to claim 1, characterized in that: The invention also comprises an energy storage module (90), wherein the energy storage module (90) is arranged between the charging integrated control module (50) and the micro air pump (70), and is installed on the lower shell (20); the air supply end of the micro air pump (70) is connected to the clamping airbag (40) via a micro air tube; an airway through hole for installing the micro air tube is provided on the charging limiter (30); and the charging integrated control module (50) and the micro air pump (70) are also electrically connected to the energy storage module (90).

3. The NFC wireless charging device according to claim 1, characterized in that: A plurality of cushion blocks (21) are also provided on a side of the lower shell (20) away from the upper shell, and the cushion blocks (21) are provided with rough textures.

4. The NFC wireless charging device according to claim 3, characterized in that: The cushion block (21) is a magnetic block, and the cushion block (21) is L-shaped and is arranged at the corner inflection point of the lower shell (20).

5. The NFC wireless charging device according to claim 1, characterized in that: The slope of the conical convex surface (32) is not greater than 30°.

6. The NFC wireless charging device according to claim 1, characterized in that: The inner circumference of the placement groove (31) is provided with a mounting ring groove (33), the clamping airbag (40) is mounted on the mounting ring groove (33), and the pressure sensor is arranged at the bottom of the mounting ring groove (33) and is in contact with a side of the clamping airbag (40) close to the charging limiter (30).

7. The NFC wireless charging device according to claim 1, characterized in that: The micro air pump (70) is arranged beside the charging integrated control module (50) and is fixedly mounted on the lower housing (20) via a mounting block (71).

Images