A wireless charging module structure

Abstract

The present invention relates to a wireless charging module structure. The wireless charging module structure includes a front cover and a bottom cover fixedly connected to each other. A transmitting coil and a circuit board are provided between the front cover and the bottom cover. At least two support pieces are clamped between the front cover and the bottom cover. The support pieces are evenly distributed around the center of the transmitting coil on the periphery of the transmitting coil. The height position where the support pieces are located is between the transmitting coil and the circuit board. The transmitting coil is clamped between the support pieces and the front cover, and the circuit board is clamped between the support pieces and the bottom cover. By setting the support pieces, the present invention synchronously fixes the circuit board and the transmitting coil, so that the circuit board and the transmitting coil are not easily loosened after long-term use, the structural stability is high, it is not easily damaged, and at the same time, the use experience is improved, which is beneficial to market promotion.

Description

Technical Field

[0001] The present invention relates to a charging product, and in particular to a structure of a wireless charging module. Background Art

[0002] Wireless charging technology is derived from wireless power transmission technology and can be divided into two methods: low-power wireless charging and high-power wireless charging. Most of the wireless charging of smart terminals seen in daily life is low-power wireless charging, which is usually achieved by electromagnetic induction. In a conventional wireless charging device, there is usually a circuit board and a transmitting coil. When the wireless charging device is made small in size, the transmitting coil of the device is usually in close contact with the circuit board, and no additional fixing structure for the transmitting coil and the circuit board is provided. This assembly structure easily causes the internal components to become loose; or the manufacturer designs it to be adhered to each other with an adhesive material, and it is difficult to separate once disassembled and repaired. These problems need to be improved. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above defects of the prior art, and provide a structure of a wireless charging module, which adds an additional fixing structure to make the internal components not easily loose, and at the same time, there are no redundant screw parts inside the product, and it is easy to assemble and disassemble and repair.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: A structure of a wireless charging module, which includes a front cover and a bottom cover fixedly connected to each other. A transmitting coil and a circuit board are provided between the front cover and the bottom cover. At least two support pieces are clamped between the front cover and the bottom cover. The support pieces are evenly distributed around the center of the transmitting coil on the periphery of the transmitting coil. The height position where the support pieces are located is between the transmitting coil and the circuit board. The transmitting coil is clamped between the support pieces and the front cover, and the circuit board is clamped between the support pieces and the bottom cover.

[0005] The structure of the wireless charging module further includes a heat dissipation plate, and the heat dissipation plate is clamped between the circuit board and the bottom cover.

[0006] The support piece is provided with a horizontal cantilever, the cantilever is arranged between the circuit board and the transmitting coil, a vertical ejector rod is provided at the end of the cantilever, the top end of the ejector rod abuts against the transmitting coil, and the bottom surface of the cantilever abuts against the circuit board.

[0007] A plurality of magnetic rings are provided on the inner side of the front cover. The magnetic rings are used to fixedly connect and adhere to a wireless charging sticker or a metal sheet or a magnetic sheet on the terminal to be charged through magnetic attraction force; a cylinder body is provided at the position of the bottom cover corresponding to the magnetic ring, the cylinder body is coaxial with the magnetic ring, and the magnetic ring and the cylinder body clamp the support piece at the same time.

[0008] A screw penetrates through the cylinder body of the bottom cover, and a threaded cylinder coaxial with the magnetic ring is provided at the middle position of the magnetic ring. The screw penetrates through the support piece and is screwed into the threaded cylinder.

[0009] The front cover is provided with a sleeve for fixing the magnetic ring. The sleeve is coaxial with the magnetic ring, and the outer wall of the magnetic ring is in close contact with the inner wall of the sleeve.

[0010] The support piece is provided with two parallel and horizontal cantilevers. The cantilevers are arranged between the circuit board and the transmitting coil. The end of the cantilever is provided with a vertical ejector rod. The top of the ejector rod abuts against the transmitting coil, and the bottom surface of the cantilever abuts against the circuit board; there is a gap between the two cantilevers. A positioning protrusion is provided on the end face of the sleeve facing the bottom cover. The positioning protrusion is inserted into the gap between the two cantilevers, and the positioning protrusion is used to position the orientation of the cantilevers of the support piece.

[0011] The positioning protrusion is on the connection line between the center of the magnetic ring and the center of the transmitting coil.

[0012] At least two positioning posts are provided on the bottom surface of the bottom cover. The positioning posts sequentially penetrate through the heat dissipation plate and the circuit board, and the positioning posts are used to fix the positions of the circuit board and the heat dissipation plate in the housing.

[0013] Raised portions are provided at the joints of the bottom surface of the bottom cover and the positioning posts. The raised portions are used to separate the heat dissipation plate from the bottom surface of the bottom cover.

[0014] A positioning rod or a threaded barrel or a metal nut is provided at the middle position of the front cover. The positioning rod or the threaded barrel or the metal nut penetrates through the middle hole of the transmitting coil to fix the position of the transmitting coil relative to the front cover.

[0015] A threaded hole or a metal nut is provided at the middle position of the bottom surface of the bottom cover. The threaded hole or the metal nut is used for threaded connection with a screw provided on an external object to achieve mutual fixation.

[0016] The beneficial effects of the present invention compared with the prior art are as follows: By providing a support piece to synchronously fix the circuit board and the transmitting coil, the circuit board and the transmitting coil are not easily loosened after long-term use, the structural stability is high, it is not easily damaged, and at the same time, the use experience is improved, which is beneficial to market promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional assembly view of the wireless charging module structure of the present invention.

[0018] Figure 2 is an exploded view of the wireless charging module structure of the present invention.

[0019] Figure 3 is a top view of the wireless charging module structure assembly of the present invention.

[0020] Figure 4 is Figure 3 the sectional view taken along the line A-A of

[0021] Figure 5 is a bottom view exploded view of the wireless charging module structure of the present invention.

[0022] Figure 6 This is an exploded view of the wireless charging module structure and the vacuum suction cup of the present invention.

[0023] Figure 7 This is a three-dimensional assembly view of the wireless charging module structure of another example of the present invention.

[0024] It should be noted that the products shown in the above views have been appropriately reduced / enlarged to adapt to the drawing size and view clarity, and do not limit the size of the products shown in the views. Detailed implementation manners

[0025] To more fully understand the technical content of the present invention, the technical solutions of the present invention will be further introduced and described below in conjunction with specific embodiments.

[0026] An embodiment of the present invention is a wireless charging module structure 100, and its specific structure is as Figure 1-6 shown.

[0027] As Figure 1 shown, the wireless charging module structure 100 includes a square housing 10. In other embodiments, the housing can also be made into other shapes, such as circular, regular polygon, irregular shape, etc. The housing 10 includes a front cover 11 and a bottom cover 12 that are fixedly connected to each other. The components of the wireless charging module structure 100 are arranged in the space between the front cover 11 and the bottom cover 12. The front cover 11 and the bottom cover 12 are detachably fixedly connected. Four uniformly distributed through holes 13 are provided on the housing 10. The through holes 13 themselves penetrate through the front cover 11 and the bottom cover 12. Bolts can be inserted into the through holes 13 and the wireless charging module structure 100 can be fixed to an external object through the bolts. Or, ropes can be inserted into the through holes 13 and the wireless charging module structure 100 can be tied to an external object through the ropes. In specific use, one end of the wireless charging module structure 100 is tied with a rope, but a certain length is left, and the wireless charging module structure 100 can move freely. In this way, when the smart terminal approaches, it can be automatically adsorbed (provided that the terminal to be charged has a ferromagnetic object). When the terminal to be charged needs to be taken away, since the wireless charger is tied, it will be separated from the terminal to be charged, and the convenience of use is high.

[0028] The external object in this embodiment refers to some daily necessities, such as vehicle-mounted brackets, disinfection boxes, Bluetooth speakers, mobile phone / tablet brackets, and so on.

[0029] As Figure 2As shown, within the space between the front cover 11 and the bottom cover 12, an emission coil 21, a magnetic ring 25, a support sheet 31, a circuit board 22, and a heat dissipation plate 23 are successively arranged from top to bottom. The emission coil 21 is used to emit electromagnetic waves, which are received by the terminal to be charged or by the wireless charging receiving patch of the terminal, thereby achieving charging of the terminal. The circuit board 22 is provided with a power interface 24, and the power interface 24 is used to connect to an external power supply to provide power for the wireless charging module structure 100. The circuit board 22 is electrically connected to the power interface 24 and the emission coil 21 respectively. In this embodiment, there are two power interfaces 24, namely a USB Type-C socket 241 and a Micro-USB socket 242. The USB Type-C socket 241 can be replaced with a socket of USB-A, Mini-USB, Micro-USB, or Lightning type. The Micro-USB socket 242 can be replaced with a socket of USB-A, Mini-USB, USB Type-C, or Lightning type. The two power interfaces 24 of the first embodiment are arranged side by side at the same horizontal height, and the minimum distance between them does not exceed 3 mm. In other embodiments, the two power interfaces can be arranged in parallel on the same vertical line, and the minimum distance between them does not exceed 2 mm.

[0030] As Figure 2 shown, the bottom cover 12 is provided with four buckle positions 121. By engaging the buckle positions 121 on the front cover 11 and the bottom cover 12, the front cover 11 and the bottom cover 12 can be fixedly connected to each other.

[0031] Combined Figure 2 、 4As shown, there are 4 magnetic rings 25 provided on the inner side of the front cover 11. The 4 magnetic rings 25 are used to fixedly connect a wireless charging sticker attached to the terminal to be charged through magnetic attraction, or to fixedly connect a metal sheet or a magnetic sheet attached to the terminal to be charged through magnetic attraction, so that the terminal to be charged can easily and automatically align with the wireless transmitting coil 21, and the usability is better. The front cover 11 is provided with a sleeve 111 for fixing the magnetic ring 25. After assembly, the sleeve 111 and the magnetic ring 25 are coaxial, and the outer wall of the magnetic ring 25 is in close contact with the inner wall of the sleeve 111, so that the magnetic ring 25 will not loosen. A cylinder 126 coaxial with the magnetic ring 25 is provided at the position of the bottom cover 12 corresponding to the magnetic ring 25. When the front cover 11 and the bottom cover 12 are fixedly connected, the front cover 11 presses the support piece 31 against the top surface of the cylinder 126 through the magnetic ring 25, that is, the support piece 31 is clamped between the magnetic ring 25 and the top surface of the cylinder 126. A total of 4 support pieces 31 are clamped between the front cover 11 and the bottom cover 12. The 4 support pieces 31 are evenly distributed around the center of the transmitting coil 21 on the periphery of the transmitting coil 21. The height position where the support piece 31 is located is between the transmitting coil 21 and the circuit board 22. The support piece 31 is provided with a horizontal cantilever 32, and the cantilever 32 extends between the circuit board 22 and the transmitting coil 21. A vertical ejector rod 33 is provided at the end of the cantilever 32. After the front cover 11 and the bottom cover 12 are fixedly connected to each other, the magnetic ring 25 and the support piece 31 are clamped at the same time, and the top of the ejector rod 33 of the support piece 31 abuts against the transmitting coil 21, and the upper surface of the transmitting coil 21 is in close contact with the front cover 11, so the transmitting coil 21 is clamped between the 4 support pieces 31 and the front cover 11 and is fixed. At the same time, the bottom surface of the cantilever 32 abuts against the upper surface of the circuit board 22, and the circuit board 22 is in close contact with the lower heat dissipation plate 23 below, that is, the circuit board 22 and the heat dissipation plate 23 are clamped between the 4 support pieces 31 and the bottom cover 12. The support piece 31 plays a role in synchronously fixing the transmitting coil 21, the circuit board 22, and the heat dissipation plate 23.

[0032] In addition, as Figure 2 , 4 shown, a screw 26 is inserted into each cylinder 126 of the bottom cover 12, and there are a total of 4 screws 26. And the front cover 11 is provided with a threaded cylinder 115 coaxial with the magnetic ring 25 at the middle position of each magnetic ring 25. The screw 26 passes through the support piece 31 and is screwed into the threaded cylinder 115 to further strengthen the connection stability between the front cover 11 and the bottom cover 12.

[0033] It can be seen that the magnetic ring 25 can not only be used to fix the external terminal to be charged through magnetic attraction, but also plays a role in force transmission (clamping the support piece 31). And the coaxial arrangement of the magnetic ring 25 and the screw 26 can also save the extra position occupied by the magnetic ring 25, and the volume of the wireless charging module structure 100 can be made smaller.

[0034] In this embodiment, as Figure 2As shown, the support piece 31 is provided with two parallel horizontal cantilevers 32, and there is a gap 34 between the two cantilevers 32. And as Figure 4 , 5 shown, a positioning protrusion 116 is provided on the end surface of the sleeve 111 facing the bottom cover 12. During assembly, as Figure 4 shown, the positioning protrusion 116 is inserted into the gap 34 between the two cantilevers 32. The positioning protrusion 116 is on the connection line between the center of the magnetic ring 25 (that is, the center of the sleeve 111) and the center of the transmitting coil 21. The positioning protrusion 116 is used to position the orientation of the cantilevers 32 of the support piece 31, so that the cantilevers 32 of the support piece 31 remain facing the center of the transmitting coil 21, avoiding deviation and affecting the effect of the fixing structure. In other embodiments, the support piece may also be provided with only one relatively wide horizontal cantilever, and a positioning hole is provided in the cantilever, and the positioning protrusion of the sleeve is inserted into the positioning hole of the cantilever to achieve the positioning function.

[0035] As Figure 2 shown, the built-in magnet piece 27 is fixed on the inner surface of the bottom cover 12. If a ferromagnetic metal piece / block is correspondingly provided on an external object, the magnet piece 27 can be used to adsorb and fix the wireless charging module structure 100 on the external object through magnetic attraction.

[0036] Figure 2 The heat dissipation plate 23 in Figure 2 can be made of a stainless iron sheet or a stainless steel sheet. After the disassembly structure in Figure 2 is assembled, the heat dissipation plate 23 and the circuit board 22 are parallel to each other and in contact with each other. One of the functions of the heat dissipation plate 23 is to conduct the heat generated by the circuit board 22. The second function of the heat dissipation plate 23 is to increase the overall weight, improve the holding feel, and improve the use experience after the wireless charging module structure 100 becomes smaller, lighter in weight, and worse in holding feel. In addition, as Figure 2 shown, 4 positioning posts 122 are provided on the bottom surface of the bottom cover 12 (two of the positioning posts are blocked). The positioning posts 122 sequentially penetrate through the heat dissipation plate 23 and the circuit board 22, so the positioning posts 122 are used to fix the positions of the circuit board 22 and the heat dissipation plate 23 in the bottom cover 12. Plane protrusions 123 perpendicular to each other are provided at the joints of the bottom surface of the bottom cover 12 and the positioning posts 122. The first function of the protrusion 123 is to enhance the strength of the positioning posts 122, and the second function is to separate the heat dissipation plate 23 from the bottom surface of the bottom cover 12, avoiding the small burrs on the heat dissipation plate 23 from abutting against the bottom surface of the bottom cover 12 and causing unevenness.

[0037] As Figure 5 shown, a positioning rod 112 is provided at the middle position inside the front cover 11. The positioning rod 112 penetrates through the middle hole 211 of the transmitting coil 21 ( Figure 2)Fix the position of the fixed transmitting coil 21 relative to the front cover 11 to prevent the transmitting coil 21 from moving positionally on the horizontal plane, which may cause inaccurate alignment during wireless charging. In other embodiments, the positioning rod can also be replaced with a threaded barrel or a metal nut.

[0038] As Figure 5 shown, a threaded hole 28 is provided at the middle position of the bottom surface of the bottom cover 12. The threaded hole 28 is used for threaded connection with a screw provided on an external object to achieve mutual fixation. The threaded hole 28 is provided in a cylinder 124 ( Figure 2 ) in the middle of the bottom cover 12, and the cylinder 124 penetrates through the circuit board 22 and the heat dissipation plate 23. In other embodiments, the threaded hole can be replaced with an embedded metal nut. In other embodiments, as Figure 7 shown, a threaded hole 113 is provided at the middle position of the top surface of the front cover 11. The threaded hole 113 is used for threaded connection with a screw provided on an external object to achieve mutual fixation. The threaded hole 113 can also be replaced with an embedded metal nut.

[0039] As Figure 5 shown, two rows of heat dissipation holes 125 are also provided on the bottom cover 12 for discharging the internal heat to prevent component damage caused by overheating inside.

[0040] As Figure 6 shown, a surface area 29 for fixing a vacuum chuck is provided on the bottom surface of the bottom cover 12. During use, as Figure 6 shown, the two vacuum chucks 89 are double-sided chucks. One side is suction-fixed to the surface area 29, and the other side is fixed and suctioned to an external object. Alternatively, in other embodiments, one end of the two vacuum chucks is inserted into a small hole in the middle of the surface area for fixation, and the other side is fixed and suctioned to an external object.

[0041] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] The above statements only further illustrate the technical content of the present invention with embodiments to make it easier for readers to understand, but it does not mean that the implementation manners of the present invention are limited to this. Any technical extension or re-creation based on the present invention is protected by the present invention.

Claims

1. A wireless charging module structure, characterized in that, it includes a front cover and a bottom cover fixedly connected to each other. A transmitting coil and a circuit board are provided between the front cover and the bottom cover. At least two support sheets are clamped between the front cover and the bottom cover. The support sheets are evenly distributed around the center of the transmitting coil on the periphery of the transmitting coil. The height position where the support sheets are located is between the transmitting coil and the circuit board. The transmitting coil is clamped between the support sheets and the front cover, and the circuit board is clamped between the support sheets and the bottom cover; the support sheet is provided with a horizontal cantilever, the cantilever is arranged between the circuit board and the transmitting coil, a vertical ejector rod is provided at the end of the cantilever, the top of the ejector rod abuts against the transmitting coil, and the bottom surface of the cantilever abuts against the circuit board; several magnetic rings are provided on the inner side of the front cover, and the magnetic rings are used to fixedly connect and adhere to a wireless charging sticker or a metal sheet or a magnetic sheet on the terminal to be charged through magnetic attraction; a cylinder is provided at the position of the bottom cover corresponding to the magnetic ring, the cylinder is coaxial with the magnetic ring, and the magnetic ring and the cylinder clamp the support sheet at the same time; a screw penetrates through the cylinder of the bottom cover, and a threaded cylinder coaxial with the magnetic ring is provided at the middle position of each magnetic ring on the front cover, and the screw penetrates through the support sheet and is screwed into the threaded cylinder; the front cover is provided with a sleeve for fixing the magnetic ring, the sleeve is coaxial with the magnetic ring, and the outer wall of the magnetic ring is closely attached to the inner wall of the sleeve.

2. The wireless charging module structure according to claim 1, characterized in that, it further includes a heat dissipation plate, and the heat dissipation plate is clamped between the circuit board and the bottom cover.

3. The wireless charging module structure according to claim 1, characterized in that, the support sheet is provided with two parallel horizontal cantilevers, the cantilevers are arranged between the circuit board and the transmitting coil, a vertical ejector rod is provided at the end of the cantilever, the top of the ejector rod abuts against the transmitting coil, and the bottom surface of the cantilever abuts against the circuit board; a gap is left between the two cantilevers, and a positioning protrusion is provided on the end surface of the sleeve facing the bottom cover, and the positioning protrusion is inserted into the gap between the two cantilevers, and the positioning protrusion is used to position the orientation of the cantilever of the support sheet.

4. The wireless charging module structure according to claim 3, characterized in that, the positioning protrusion is on the connection line between the center of the magnetic ring and the center of the transmitting coil.

5. The wireless charging module structure according to claim 2, characterized in that, at least two positioning columns are provided on the bottom surface of the bottom cover, the positioning columns sequentially penetrate through the heat dissipation plate and the circuit board, and the positioning columns are used to fix the positions of the circuit board and the heat dissipation plate in the housing.

6. The wireless charging module structure according to claim 5, characterized in that, protrusions are provided at the joints of the bottom surface of the bottom cover and the positioning columns, and the protrusions are used to separate the heat dissipation plate from the bottom surface of the bottom cover.

7. The wireless charging module structure according to claim 1, characterized in that, a positioning rod or a threaded cylinder or a metal nut is provided at the middle position of the front cover, and the positioning rod or the threaded cylinder or the metal nut penetrates through the middle hole of the transmitting coil to fix the position of the transmitting coil relative to the front cover.

8. The wireless charging module structure according to claim 1, characterized in that, A threaded hole or a metal nut is provided at the middle position of the bottom surface of the bottom cover, and the threaded hole or the metal nut is used for threaded connection with a screw provided on an external object to achieve mutual fixation.

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