Ac magnetic attraction wireless charger

Abstract

This utility model discloses an AC magnetic wireless charger, comprising a shell, a wireless charging module, a flip-up AC plug, a power circuit board, and conductive posts. The shell contains an insulating plate that divides its internal space into two independent upper and lower cavities. This utility model features a reasonable structural design. The insulating plate separates the internal space of the shell into two physical spaces: an upper cavity and a lower cavity. The wireless charging module is placed at the top of the upper cavity, while the flip-up AC plug and power circuit board are placed in the lower cavity. The insulating plate completely separates the AC circuitry from the electromagnetically sensitive wireless charging component, fundamentally solving the electromagnetic interference problem caused by their close proximity. The two charging methods do not interfere with each other, ensuring the efficiency and stability of wireless charging. Simultaneously, the power circuit board has a charging port, providing both wired and wireless charging modes, allowing users to flexibly choose according to their actual needs and meet different usage requirements.

Description

Technical Field

[0001] This utility model relates to the field of charger technology, specifically to an AC magnetic wireless charger. Background Technology

[0002] With the widespread use of smartphones, tablets, and other electronic devices, battery life has become an increasingly important concern for users, making chargers an indispensable accessory in daily life. In pursuit of convenience and simplicity, wireless charging technology has seen widespread adoption in recent years. A wireless charger is a device that uses electromagnetic induction to charge wireless charging devices. It has a built-in transmitting coil that matches the receiving coil inside the wireless charging device to achieve electromagnetic induction charging. Wireless chargers can charge without a power cord, making them increasingly popular with users.

[0003] Existing magnetic wireless chargers connect to a charging plug via a power cord. When in use, the charging plug needs to be connected to AC power, and then the wireless charging device is charged sequentially through the power plug, power cord, and wireless charger. Users need to carry two large components, the wireless charger and the charging plug, as well as a long power cord, which is inconvenient for daily life or when using the device while traveling.

[0004] To address the aforementioned issues, utility model publication CN220066897U, entitled "A Wall-Mounted Wireless Charger," discloses a wall-mounted wireless charger. The charger body includes a PCB assembly and a magnetic transmitter assembly. The PCB assembly comprises a PCB board and a plug and charging circuit mounted on it. The magnetic transmitter assembly includes a transmitting coil and a magnet module. The transmitting coil is connected to the charging circuit and charges the wireless charging device, while the magnet module is used for magnetic connection with the wireless charging device. Although this design integrates the plug, charging circuit, and magnetic transmitter assembly into a single housing, the close proximity and lack of isolation between the charging circuit and the magnetic transmitter assembly easily lead to severe electromagnetic interference between the high-frequency alternating magnetic field of the magnetic transmitter assembly and the high-current AC mains circuit. This results in decreased wireless charging efficiency and may even affect the normal operation of the charged device. Utility Model Content

[0005] To address the aforementioned shortcomings, the purpose of this utility model is to provide an AC magnetic wireless charger with a reasonable structural design and good wireless charging performance.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] An AC magnetic wireless charger includes a housing, a wireless charging module, a flip-up AC plug, a power circuit board, and conductive posts. The housing has an internal partition plate that divides its internal space into an upper cavity and a lower cavity. The wireless charging module is located at the top of the upper cavity, and the flip-up AC plug is located at the bottom of the lower cavity. The power circuit board is located in the lower cavity, and its input end is electrically connected to the flip-up AC plug. The power circuit board has a charging port, and the housing has an opening for the charging port to be exposed. The lower end of the conductive posts is electrically connected to the output end of the power circuit board, and the upper end passes through the partition plate and is electrically connected to the wireless charging module.

[0008] In a preferred embodiment of this utility model, the outer shell includes a face cover, a cylindrical shell, and a bottom shell. The partition plate is located inside the cylindrical shell, forming the upper receiving cavity at its upper part and the upper part of the lower receiving cavity at its lower part. The bottom shell covers the lower end of the cylindrical shell, forming the lower part of the lower receiving cavity. The flip-up AC plug and the power circuit board are both located at the lower part of the lower receiving cavity, and the face cover covers the upper end of the cylindrical shell. This effectively simplifies the assembly process, improves production efficiency, and is suitable for large-scale automated production.

[0009] In a preferred embodiment of this utility model, the wireless charging module includes an electromagnetic induction coil, a ferrite magnetic shielding sheet, a ring array magnet, a wireless circuit board, and a mounting substrate. The ring array magnet is disposed at the periphery of the upper surface of the mounting substrate, the ferrite magnetic shielding sheet is disposed at the center of the upper surface of the mounting substrate, the electromagnetic induction coil is disposed on the ferrite magnetic shielding sheet, and the wireless circuit board is disposed on the lower surface of the mounting substrate and is electrically connected to the electromagnetic induction coil. The wireless circuit board drives the electromagnetic induction coil to generate an alternating magnetic field.

[0010] In a preferred embodiment of this invention, the upper surface of the mounting substrate is provided with an inner positioning claw for limiting the ferrite magnetic shielding sheet and an outer positioning claw for limiting the annular array magnet. The inner positioning claw is used to surround and limit the ferrite magnetic shielding sheet, and the outer positioning claw is used to surround and limit the annular array magnet.

[0011] As a preferred embodiment of this utility model, the lower surface of the mounting substrate is provided with a lower positioning claw, and the wireless circuit board is provided with a positioning hole that matches the lower positioning claw, thereby realizing rapid alignment and assembly between the wireless circuit board and the mounting substrate.

[0012] In a preferred embodiment of this invention, the end of the lower positioning claw is bent to form a hook that can engage with the edge of the positioning hole. The hook engages with the edge of the PCB positioning hole, achieving precise locking and fixing of the wireless circuit board and preventing loosening or detachment.

[0013] In a preferred embodiment of this utility model, the flip-up AC plug includes a fixing base, AC prongs, and a metal connecting piece. The AC prongs are provided with a flip-up shaft seat. The bottom surface of the housing has a storage groove that allows the AC prongs to flip and retract into it. The groove wall has a shaft hole adapted to the flip-up shaft seat. The metal connecting piece is disposed inside the housing via the fixing base, with one end electrically connected to the power circuit board and the other end extending to the tail of the AC prongs to form a spring-loaded claw. A contact protrusion is provided at the tail of the AC prongs, which contacts the spring-loaded claw of the metal connecting piece when the prongs are flipped out of the storage groove. When the user flips the AC prongs, the AC prongs rotate 90 degrees around the shaft and extend out of the storage groove, causing the contact protrusion at the tail to rotate and make electrical contact with the spring-loaded claw.

[0014] In a preferred embodiment of this invention, a positioning hole is provided in the middle of the metal connecting piece, and a positioning post adapted to the positioning hole is provided on the fixing base. This ensures a good fit, preventing displacement due to vibration or repeated insertion and removal, and guaranteeing long-term stability of the electrical contact.

[0015] The beneficial effects of this utility model are as follows: The structure is rationally designed, using an isolation plate to divide the internal space of the outer shell into two physical spaces: an upper cavity and a lower cavity. The wireless charging module is placed at the top of the upper cavity, while the flip-up AC plug and power circuit board are placed in the lower cavity. The isolation plate completely separates the AC circuit from the electromagnetically sensitive wireless charging component, fundamentally solving the electromagnetic interference problem caused by their close proximity. The two charging methods do not interfere with each other, ensuring the efficiency and stability of wireless charging. Simultaneously, the power circuit board is equipped with a charging port, providing both wired and wireless charging modes, allowing users to flexibly choose according to their actual needs and meet different usage requirements.

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a cross-sectional structural schematic diagram of the present invention.

[0019] Figure 3 This is a structural diagram showing the disassembled structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the outer shell of this utility model. Detailed Implementation

[0021] See Figures 1 to 4This embodiment provides an AC magnetic wireless charger, which includes a housing 1, a wireless charging module 2, a flip-up AC plug 3, a power circuit board 4, and conductive posts 5. The conductive posts 5 are conductive copper posts.

[0022] The outer casing 1 is equipped with an isolation plate 11, which divides its internal space into an independent upper cavity 12 and a lower cavity 13. The wireless charging module 2 is located at the top of the upper cavity 12, and the flip-up AC plug 3 is located at the bottom side of the lower cavity 13. The power circuit board 4 is located inside the lower cavity 13, and its input end is electrically connected to the flip-up AC plug 3. Specifically, the outer casing 1 includes a face cover 14, a cylindrical shell 15, and a bottom shell 16. The isolation plate 11 is located inside the cylindrical shell 15, so that its upper part forms the upper cavity 12, and its lower part forms the upper part of the lower cavity 13. The bottom shell 16 covers the lower end of the cylindrical shell 15 to form the lower part of the lower cavity 13. The flip-up AC plug 3 and the power circuit board 4 are both located at the lower part of the lower cavity, and the face cover 14 covers the upper end of the cylindrical shell 15. This design effectively simplifies the assembly process, improves production efficiency, and is suitable for large-scale automated production.

[0023] The power circuit board 4 is provided with a charging port 6, and the housing 1 is provided with an opening for the charging port 6 to be exposed. The lower end of the conductive post 5 is electrically connected to the output end of the power circuit board 4, and the upper end passes through the isolation plate 11 and is electrically connected to the wireless charging module 2.

[0024] See Figure 3The wireless charging module 2 includes an electromagnetic induction coil 21, a ferrite magnetic shielding sheet 22, a ring array magnet 23, a wireless circuit board 24, and a mounting substrate 25. The ring array magnet 23 is disposed at the periphery of the upper surface of the mounting substrate 25, the ferrite magnetic shielding sheet 22 is disposed at the center of the upper surface of the mounting substrate 25, the electromagnetic induction coil 21 is disposed on the ferrite magnetic shielding sheet 22, and the wireless circuit board 24 is disposed on the lower surface of the mounting substrate 25 and is electrically connected to the electromagnetic induction coil 21. The wireless circuit board 24 drives the electromagnetic induction coil 21 to generate an alternating magnetic field. Preferably, the upper surface of the mounting substrate 25 is provided with an inner positioning claw for limiting the ferrite magnetic shielding sheet 22 and an outer positioning claw for limiting the ring array magnet 23. The inner positioning claw is used to surround and limit the ferrite magnetic shielding sheet 22, and the outer positioning claw is used to surround and limit the ring array magnet 23. During assembly, the operator only needs to place the ferrite magnetic shielding sheet 22 into the area formed by the inner positioning claws and the annular magnet block into the slot formed by the outer positioning claws to quickly and accurately complete the positioning without relying on complex fixtures or vision alignment systems. A lower positioning claw is provided on the lower surface of the mounting substrate 25, and a positioning hole adapted to the lower positioning claw is provided on the wireless circuit board 24, realizing rapid alignment and assembly between the wireless circuit board 24 and the mounting substrate 25. Preferably, the end of the lower positioning claw is bent to form a hook that can engage with the edge of the positioning hole. The hook engages with the edge of the PCB positioning hole, achieving precise locking and fixing of the wireless circuit board 24 and preventing loosening and falling off.

[0025] The flip-up AC plug 3 includes a base 31, AC pins 32, and a metal connector 33. The AC pins 32 are provided with a flip-up pivot 34. The bottom surface of the housing 1 has a storage groove 17 that allows the AC pins 32 to flip and retract. The groove wall of the storage groove 17 has a pivot hole 18 that matches the flip-up pivot 34. The metal connector 33 is disposed within the housing 1 via the base 31. Preferably, a positioning hole 331 is provided in the middle of the metal connector 33, and a positioning post on the base 31 matches the positioning hole 331. The positioning hole 331 is punched in the middle of the metal connector 33, and the positioning hole 331 and the positioning post on the base 31 are press-fitted, ensuring a good fit and preventing displacement due to vibration or repeated insertion and removal, thus guaranteeing long-term stability of the electrical contact.

[0026] One end of the metal connector 33 is electrically connected to the power circuit board 4, and the other end extends to the tail of the AC plug 32 to form a spring claw 332. A contact protrusion 321 is provided at the tail of the AC plug 32, which contacts the spring claw 332 of the metal connector 33 when it is flipped out of the storage slot 17. When the user flips the AC plug 32, the AC plug 32 rotates 90 degrees around its axis and extends out of the storage slot 17. The contact protrusion 321 at its tail rotates accordingly and makes electrical contact with the spring claw 332. The spring claw 332 provides continuous pressure under its own elasticity to ensure a continuous and reliable electrical connection. When retraction is required, the AC plug 32 is pushed to rotate and retract into the storage slot 17, reducing space occupation. The AC plug 32 is used to achieve wall-mounted connection to AC power or direct connection to a power strip for AC power connection.

[0027] In use, an isolation plate 11 is installed inside the outer casing 1, which divides the internal space of the outer casing 1 into two physical spaces: an upper cavity 12 and a lower cavity 13. The wireless charging module 2 is placed on top of the upper cavity 12, while the flipped AC plug 3 and power circuit board 4 are placed in the lower cavity 13. The isolation plate 11 completely separates the AC circuit from the electromagnetically sensitive wireless charging part. The conductive post 5 serves as the only electrical connection channel, passing vertically through the isolation plate 11, allowing the power circuit board 4 and the wireless charging module 2 to be electrically connected. This fundamentally solves the electromagnetic interference problem caused by their close proximity, ensuring that the two charging methods do not interfere with each other and guaranteeing the efficiency and stability of wireless charging.

[0028] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model. Chargers with other structures obtained using the same or similar structures as described in the above embodiments of this utility model are all within the protection scope of this utility model.

Claims

1. An AC magnetic wireless charger, comprising a housing and a wireless charging module, characterized in that: It also includes a flip-up AC plug, a power circuit board, and conductive posts. The housing has an isolation plate that divides its internal space into an independent upper cavity and a lower cavity. The wireless charging module is located at the top of the upper cavity, the flip-up AC plug is located at the bottom side of the lower cavity, the power circuit board is located in the lower cavity, and its input end is electrically connected to the flip-up AC plug. The power circuit board has a charging port, and the housing has an opening for the charging port to be exposed. The lower end of the conductive post is electrically connected to the output end of the power circuit board, and the upper end passes through the isolation plate and is electrically connected to the wireless charging module.

2. The AC magnetic wireless charger according to claim 1, characterized in that, The outer casing includes a face cover, a cylindrical shell, and a bottom shell. The partition plate is located inside the cylindrical shell, forming the upper receiving cavity at its upper part and the upper part of the lower receiving cavity at its lower part. The bottom shell covers the lower end of the cylindrical shell to form the lower part of the lower receiving cavity. The flip-up AC plug and the power circuit board are both located in the lower part of the lower receiving cavity. The face cover covers the upper end of the cylindrical shell.

3. The AC magnetic wireless charger according to claim 1, characterized in that, The wireless charging module includes an electromagnetic induction coil, a ferrite magnetic shield, a ring array magnet, a wireless circuit board, and a mounting substrate. The ring array magnet is located at the periphery of the upper surface of the mounting substrate, the ferrite magnetic shield is located at the center of the upper surface of the mounting substrate, the electromagnetic induction coil is located on the ferrite magnetic shield, and the wireless circuit board is located on the lower surface of the mounting substrate and is electrically connected to the electromagnetic induction coil.

4. The AC magnetic wireless charger according to claim 3, characterized in that, The upper surface of the mounting substrate is provided with an inner positioning claw for limiting the ferrite magnetic shield and an outer positioning claw for limiting the annular array magnet.

5. The AC magnetic wireless charger according to claim 4, characterized in that, The lower surface of the mounting substrate is provided with a lower positioning claw, and the wireless circuit board is provided with a positioning hole that matches the lower positioning claw.

6. The AC magnetic wireless charger according to claim 5, characterized in that, The end of the lower positioning claw is bent to form a hook that can be engaged at the edge of the positioning hole.

7. The AC magnetic wireless charger according to claim 1, characterized in that, The flip-up AC plug includes a mounting base, AC pins, and a metal connecting piece. The AC pins are provided with flip-up shaft seats. The bottom surface of the housing is provided with a storage groove that allows the AC pins to flip and retract into it. The groove wall of the storage groove is provided with a shaft hole that matches the flip-up shaft seat. The metal connecting piece is set inside the housing through the mounting base, and one end of the metal connecting piece is electrically connected to the power circuit board. The other end extends to the tail of the AC pin to form a spring claw. The tail of the AC pin is provided with a contact protrusion that contacts the spring claw of the metal connecting piece when it flips out of the storage groove.

8. The AC magnetic wireless charger according to claim 7, characterized in that, The metal connecting piece is provided with a positioning hole in the middle, and the fixing base is provided with a positioning post that matches the positioning hole.

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