Wireless charging circuit board

Abstract

The utility model relates to the technical field of wireless charging, in particular to a wireless charging circuit board, which comprises a main body comprising a shell, a USB (universal serial bus) interface arranged on the surface of the shell, a clamping block fixedly connected with the inner surface of the shell, a circuit board body and a vapor chamber arranged on the inner surface of the shell, a charging coil arranged on the surface of the vapor chamber, and a charging coil arranged on the surface of the charging coil. And heat dissipation holes are formed in the surface of the shell. According to the utility model, the fixed plate and the movable plate are arranged on the vapor chamber, so that the charging coil can be limited by the fixed plate and the movable plate, the condition of deviation caused by collision is avoided, the charging effect is further prevented from being influenced, and the movable plate can be limited according to different numbers of turns of the charging coil through the connection of the screw rod, the sliding chute and the nut; and meanwhile, the mounting plate and the fixing plate are connected through the inserting block and the inserting groove, so that the effect of covering the screw rod and the nut is achieved, and the screw rod and the nut cannot protrude out of the limiting mechanism to scratch other equipment.

Description

Technical Field

[0001] This utility model relates to the field of wireless charging technology, specifically a wireless charging circuit board. Background Technology

[0002] The wireless charging circuit board is the core component of wireless charging technology, enabling devices to charge without a physical connection. This circuit board typically contains a transmitting coil and a receiving coil, achieving wireless power transmission through the principle of electromagnetic induction.

[0003] The wireless charging circuit board needs to be installed on the corresponding shell to form a wireless charging device to charge the device. However, the charging coil on the existing circuit board is prone to displacement when the wireless charger is hit, which will affect the charging effect during use. Utility Model Content

[0004] The purpose of this invention is to provide a wireless charging circuit board to solve the problem mentioned in the background art that the charging coil on the circuit board is prone to displacement when the wireless charger is bumped, which in turn affects the charging effect during use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wireless charging circuit board, comprising:

[0006] The main body includes a shell, a USB interface is installed on the surface of the shell, a card block is fixedly connected to the inner surface of the shell, a circuit board and a heat spreader are installed on the inner surface of the shell, a charging coil is installed on the surface of the heat spreader, and heat dissipation holes are provided on the surface of the shell.

[0007] The limiting mechanism includes a fixed plate, which is fixedly connected to the surface of a heat spreader plate. The surface of the fixed plate has a sliding groove. A movable plate is installed on the surface of the heat spreader plate. A screw is fixedly connected to the surface of the movable plate. A nut is installed on the surface of the screw. An insert block is fixedly connected to the surface of the fixed plate. An mounting plate is installed on the surface of the fixed plate. The surface of the mounting plate has a slot and a through groove.

[0008] Preferably, the fixed plate is provided in four sets, and the four sets of fixed plates are installed at the four ends of the heat spreader. One side of the movable plate is abutted and connected to the surface of the heat spreader, and the other side of the movable plate is abutted and connected to the surface of the fixed plate.

[0009] Preferably, one end of the screw is fixedly connected to the surface of the movable plate, the other end of the screw is threadedly connected to the surface of the nut, the screw is slidably connected to the surface of the groove, the nut is abutted against the surface of the fixed plate, and the nut is installed on the surface of the through groove.

[0010] Preferably, there are two sets of inserts and slots. The two sets of inserts are fixedly connected to both sides of the fixing plate, and the two sets of slots are opened on both sides of the mounting plate. Each set of inserts and slots consists of two inserts, and the inserts are inserted into the surface of the slots.

[0011] Preferably, the surface of the outer casing is provided with a dustproof mechanism, the dustproof mechanism including an installation compartment, the installation compartment being fixedly connected to the outer surface of the outer casing, the surface of the installation compartment having through holes and connecting grooves, the inner surface of the installation compartment being fixedly connected to a crossbar, the inner surface of the installation compartment being abutted against a filter screen, and the surface of the filter screen being fixedly connected to a pull plate.

[0012] Preferably, the size of the through hole is larger than the size of the heat dissipation hole, the cross section of the crossbar is "L" shaped, two sets of crossbars are provided, the two sets of crossbars are fixedly connected to both sides of the mounting chamber, the size of the filter screen is larger than the size of the through hole, and the filter screen is inserted and connected to the surface of the crossbar.

[0013] Preferably, one side of the pull plate is fixedly connected to the surface of the filter screen, and the other side of the pull plate is attached to the outer surface of the installation chamber.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By setting a fixed plate and a movable plate on the heat spreader, both can limit the charging coil to prevent it from shifting due to collision, thus avoiding affecting the charging effect. The movable plate can be limited according to the number of turns of the charging coil through the connection of the screw, slide, and nut, thereby improving the application range of the limiting mechanism. At the same time, the mounting plate is connected to the fixed plate through the plug and slot to cover the screw and nut so that they do not protrude outside the limiting mechanism and scratch other equipment.

[0016] 2. By installing a mounting compartment on the surface of the outer casing and setting a filter screen inside the mounting compartment, the filter screen can filter and block dust from entering the heat dissipation holes, thus preventing dust from entering the outer casing and adhering to the circuit board, causing damage. This dustproofing effectively protects the circuit board. Furthermore, the connection between the pull plate, filter screen, and crossbar allows for the removal and installation of the filter screen, enabling it to be cleaned and replaced after prolonged use. Attached Figure Description

[0017] Figure 1 This is a top-view perspective view of the structure of this utility model;

[0018] Figure 2 This is a bottom-view perspective view of the structure of this utility model;

[0019] Figure 3 This is a partial three-dimensional sectional view of the mounting plate of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the filter screen of this utility model;

[0021] Figure 5 This utility model Figure 4 A magnified structural diagram of point A in the middle.

[0022] In the diagram: 1. Outer shell; 11. USB interface; 12. Card block; 13. Circuit board body; 14. Heat sink; 15. Charging coil; 16. Heat dissipation hole; 2. Fixing plate; 21. Slide groove; 22. Moving plate; 23. Screw; 24. Nut; 25. Insert block; 26. Mounting plate; 27. Slot; 28. Through groove; 3. Mounting compartment; 31. Through hole; 32. Connecting groove; 33. Crossbar; 34. Filter screen; 35. Pull plate. Detailed Implementation

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

[0024] Please see Figure 1-5 One embodiment provided by this utility model:

[0025] A wireless charging circuit board, comprising:

[0026] The main body includes a shell 1. A USB interface 11 is installed on the surface of the shell 1. A clip 12 is fixedly connected to the inner surface of the shell 1. A circuit board 13 and a heat spreader 14 are installed on the inner surface of the shell 1. A charging coil 15 is installed on the surface of the heat spreader 14. Heat dissipation holes 16 are opened on the surface of the shell 1. The circuit board 13 is engaged in the shell 1 by the clip 12 and is connected to power through the USB interface 11, so that the circuit board 13 controls the charging coil 15 to wirelessly charge the device.

[0027] The limiting mechanism includes a fixed plate 2, which is fixedly connected to the surface of the heat spreader 14. The surface of the fixed plate 2 is provided with a sliding groove 21. A movable plate 22 is installed on the surface of the heat spreader 14. A screw 23 is fixedly connected to the surface of the movable plate 22. A nut 24 is installed on the surface of the screw 23. An insert block 25 is fixedly connected to the surface of the fixed plate 2. An mounting plate 26 is installed on the surface of the fixed plate 2. The surface of the mounting plate 26 is provided with a slot 27 and a through groove 28. The cross-section of the fixed plate 2 is "L" shaped and the inner side of the fixed plate 2 abuts against the surface of the charging coil 15.

[0028] Furthermore, four sets of fixed plates 2 are provided, and the four sets of fixed plates 2 are installed at the four ends of the heat spreader 14. One side of the movable plate 22 is abutted and connected to the surface of the heat spreader 14, and the other side of the movable plate 22 is abutted and connected to the surface of the fixed plate 2. The movable plate 22 abuts and the surface of the charging coil 15 and the contact surface is arc-shaped. Through the connection of the fixed plate 2 and the movable plate 22, the effect of limiting the position of the charging coil 15 is achieved.

[0029] Furthermore, one end of the screw 23 is fixedly connected to the surface of the movable plate 22, and the other end of the screw 23 is threadedly connected to the surface of the nut 24. The screw 23 is slidably connected to the surface of the slide groove 21, and the nut 24 is abutted against the surface of the fixed plate 2. The nut 24 is installed on the surface of the through groove 28. With the connection of the slide groove 21 and the screw 23, the movable plate 22 can move according to the number of turns of the charging coil 15, thereby satisfying the effect of limiting the charging coil 15 with different numbers of turns. The size of the nut 24 is smaller than the size of the through groove 28, and the through groove 28 allows for unobstructed installation of the mounting plate 26.

[0030] Furthermore, there are two sets of insert blocks 25 and slots 27. The two sets of insert blocks 25 are fixedly connected to both sides of the fixed plate 2, and the two sets of slots 27 are opened on both sides of the mounting plate 26. Each set of insert blocks 25 and slots 27 consists of two insert blocks 25 and two slots 27. The insert blocks 25 are inserted into the surface of the slots 27. The fixed plate 2 and the mounting plate 26 are connected through the insert blocks 25 and the slots 27. The connection between the insert blocks 25 and the slots 27 generates a certain friction, which allows the mounting plate 26 to be fitted onto the fixed plate 2 without falling off. The mounting plate 26 can also cover the screw 23 and the nut 24 so that they do not protrude from the surface of the limiting mechanism.

[0031] Furthermore, the surface of the outer casing 1 is provided with a dustproof mechanism, which includes an installation chamber 3. The installation chamber 3 is fixedly connected to the outer surface of the outer casing 1. The surface of the installation chamber 3 is provided with a through hole 31 and a connecting groove 32. A crossbar 33 is fixedly connected to the inner surface of the installation chamber 3. A filter screen 34 is abutted to the inner surface of the installation chamber 3. A pull plate 35 is fixedly connected to the surface of the filter screen 34. Under the action of the installation chamber 3, the heat dissipation hole 16 is covered and the filter screen 34 is installed.

[0032] Furthermore, the size of the through hole 31 is larger than the size of the heat dissipation hole 16, the cross section of the crossbar 33 is "L" shaped, and two sets of crossbars 33 are provided. The two sets of crossbars 33 are fixedly connected to both sides of the mounting chamber 3. The size of the filter screen 34 is larger than the size of the through hole 31. The filter screen 34 is inserted and connected to the surface of the crossbar 33. The heat dissipation effect of the heat dissipation hole 16 can be affected while the mounting chamber 3 and the filter screen 34 are installed through the through hole 31. At the same time, the filter screen 34 can be installed and engaged under the connection of the crossbar 33 and the mounting chamber 3, and the friction between the filter screen 34 and the crossbar 33 and the mounting chamber 3 makes it placed in the mounting chamber 3.

[0033] Furthermore, one side of the pull plate 35 is fixedly connected to the surface of the filter screen 34, and the other side of the pull plate 35 is attached to the outer surface of the installation chamber 3. The side of the pull plate 35 connected to the filter screen 34 is installed in the installation chamber 3 through the connecting groove 32, while the side of the pull plate 35 that abuts against the outside of the installation chamber 3 is larger than the size of the connecting groove 32. By moving the pull plate 35, the filter screen 34 can be moved, thereby realizing the disassembly and assembly of the installation chamber 3.

[0034] Working principle: When limiting the charging coil 15, the moving plate 22 is moved according to the number of turns of the charging coil 15 so that its two sides slide on the surfaces of the heat spreader 14 and the fixed plate 2 respectively, while the screw 23 slides on the surface of the slide groove 21. When the arc-shaped side of the moving plate 22 abuts against the charging coil 15, the movement stops, and the nut 24 is threaded onto the screw 23 and tightened so that it abuts against the fixed plate 2. At this time, the slot 27 opened on the mounting plate 26 is aligned with the insert block 25 and pressed against the side of the fixed plate 2, so that the insert block 25 is inserted into the slot 27, and the screw 23 and the nut 24 are placed in the through groove 28 to complete the limiting of the charging coil 15.

[0035] Before installing the circuit board and using it, align the filter screen 34 with the connecting groove 32 and push the pull plate 35 into the mounting chamber 3 so that the filter screen 34 slides on the inner surface of the mounting chamber 3. At this time, the two sides of the filter screen 34 are engaged with the two sets of crossbars 33. When fully engaged, the pull plate 35 abuts against the outside of the mounting chamber 3 and covers the connecting groove 32, and the external dust is filtered and blocked by the filter screen 34.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A wireless charging circuit board, characterized in that, include: The main body includes a shell (1), the surface of which is provided with a USB interface (11), a card block (12) is fixedly connected to the inner surface of the shell (1), a circuit board (13) and a heat spreader (14) are installed on the inner surface of the shell (1), a charging coil (15) is installed on the surface of the heat spreader (14), and heat dissipation holes (16) are opened on the surface of the shell (1). The limiting mechanism includes a fixed plate (2), which is fixedly connected to the surface of the heat spreader (14). The surface of the fixed plate (2) is provided with a sliding groove (21). A movable plate (22) is installed on the surface of the heat spreader (14). A screw (23) is fixedly connected to the surface of the movable plate (22). A nut (24) is installed on the surface of the screw (23). An insert (25) is fixedly connected to the surface of the fixed plate (2). An mounting plate (26) is installed on the surface of the fixed plate (2). The surface of the mounting plate (26) is provided with a slot (27) and a through groove (28).

2. The wireless charging circuit board according to claim 1, characterized in that: The fixed plate (2) is provided in four sets, and the four sets of fixed plates (2) are installed at the four ends of the heat spreader (14). One side of the movable plate (22) is abutted and connected to the surface of the heat spreader (14), and the other side of the movable plate (22) is abutted and connected to the surface of the fixed plate (2).

3. The wireless charging circuit board according to claim 1, characterized in that: One end of the screw (23) is fixedly connected to the surface of the movable plate (22), and the other end of the screw (23) is threadedly connected to the surface of the nut (24). The screw (23) is slidably connected to the surface of the slide groove (21), and the nut (24) is abutted against the surface of the fixed plate (2). The nut (24) is installed on the surface of the through groove (28).

4. A wireless charging circuit board according to claim 1, characterized in that: There are two sets of the insert (25) and slot (27). The two sets of insert (25) are fixedly connected to both sides of the fixing plate (2). The two sets of slot (27) are opened on both sides of the mounting plate (26). Each set of insert (25) and slot (27) has two pieces. The insert (25) is inserted into the surface of the slot (27).

5. A wireless charging circuit board according to claim 1, characterized in that: The surface of the outer shell (1) is provided with a dustproof mechanism, which includes an installation chamber (3). The installation chamber (3) is fixedly connected to the outer surface of the outer shell (1). The surface of the installation chamber (3) is provided with a through hole (31) and a connecting groove (32). A crossbar (33) is fixedly connected to the inner surface of the installation chamber (3). A filter screen (34) is abutted to the inner surface of the installation chamber (3). A pull plate (35) is fixedly connected to the surface of the filter screen (34).

6. A wireless charging circuit board according to claim 5, characterized in that: The size of the through hole (31) is larger than the size of the heat dissipation hole (16). The cross section of the cross bar (33) is "L" shaped. There are two sets of cross bars (33). The two sets of cross bars (33) are fixedly connected to both sides of the mounting chamber (3). The size of the filter screen (34) is larger than the size of the through hole (31). The filter screen (34) is inserted and connected to the surface of the cross bar (33).

7. A wireless charging circuit board according to claim 5, characterized in that: One side of the pull plate (35) is fixedly connected to the surface of the filter screen (34), and the other side of the pull plate (35) is attached to the outer surface of the mounting chamber (3).

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