CN113765228A

CN113765228A - Wireless charging module structure

Info

Publication number: CN113765228A
Application number: CN202010496605.XA
Authority: CN
Inventors: 苏永东
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-12-07

Abstract

The invention relates to a wireless charging module structure. The wireless charging module structure comprises a front cover and a bottom cover which are fixedly connected with each other, a transmitting coil and a circuit board are arranged between the front cover and the bottom cover, at least two supporting pieces are clamped between the front cover and the bottom cover, the supporting pieces are uniformly distributed on the periphery of the transmitting coil around the center of the transmitting coil, the height positions of the supporting pieces are between the transmitting coil and the circuit board, the transmitting coil is clamped between the supporting pieces and the front cover, and the circuit board is clamped between the supporting pieces and the bottom cover. The support sheet is arranged to synchronously fix the circuit board and the transmitting coil, so that the circuit board and the transmitting coil are not easy to loosen after long-time use, the structure stability is high, the transmitting coil is not easy to damage, the use experience is improved, and the market popularization is facilitated.

Description

Wireless charging module structure

Technical Field

The invention relates to a charging product, in particular to a wireless charging module structure.

Background

The wireless charging technology is derived from a wireless power transmission technology and can be divided into a low-power wireless charging mode and a high-power wireless charging mode. Most of wireless charging of the intelligent terminal in daily life is low-power wireless charging, and is generally realized through electromagnetic induction. In a conventional wireless charging device, there is generally a circuit board and a transmitting coil. When the volume of the wireless charging equipment is smaller, the transmitting coil of the equipment is usually attached to the circuit board, and no additional fixing structure for the transmitting coil and the circuit board is arranged, so that internal components are easy to loosen due to the assembly structure; or manufacturers may design adhesive materials to adhere to each other and to be difficult to separate once removed, and these problems remain to be improved.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a wireless charging module structure, wherein an additional fixing structure is added, so that internal components are not easy to loosen, and meanwhile, no redundant screw piece is arranged in a product, and the wireless charging module structure is easy to assemble, disassemble and repair.

In order to achieve the purpose, the invention adopts the following technical scheme: a wireless charging module structure comprises a front cover and a bottom cover which are fixedly connected with each other, wherein a transmitting coil and a circuit board are arranged between the front cover and the bottom cover, at least two supporting pieces are clamped between the front cover and the bottom cover, the supporting pieces are uniformly distributed on the periphery of the transmitting coil around the center of the transmitting coil, the height positions of the supporting pieces are between the transmitting coil and the circuit board, the transmitting coil is clamped between the supporting pieces and the front cover, and the circuit board is clamped between the supporting pieces and the bottom cover.

The wireless charging module structure also comprises a heat dissipation plate, and the heat dissipation plate is clamped between the circuit board 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, the tail end of the cantilever is provided with a vertical ejector rod, the top end of the ejector rod abuts against the transmitting coil, and the bottom surface of the cantilever abuts against the circuit board.

The inner side of the front cover is provided with a plurality of magnetic rings which are used for fixedly connecting a wireless charging paste or a metal sheet or a magnetic sheet pasted on a terminal to be charged through magnetic attraction; the bottom cover is provided with a cylinder body at a position corresponding to the magnetic ring, the cylinder body is coaxial with the magnetic ring, and the magnetic ring and the cylinder body simultaneously clamp the support sheet.

The cylinder body of the bottom cover is penetrated with a screw, the middle position of the magnetic ring is provided with a thread cylinder coaxial with the magnetic ring, and the screw penetrates through the support sheet and is screwed into the thread cylinder.

The front cover is provided with a sleeve for fixing the magnetic ring, the sleeve and the magnetic ring are coaxial, and the outer wall of the magnetic ring is tightly attached to the inner wall of the sleeve.

The support sheet is provided with two parallel horizontal cantilevers, the cantilevers are arranged between the circuit board and the transmitting coil, the tail ends of the cantilevers are provided with vertical ejector rods, the top ends of the ejector rods abut against the transmitting coil, and the bottom surfaces of the cantilevers abut against the circuit board; a gap is reserved between the two cantilevers, a positioning bulge is arranged on the end face, facing the bottom cover, of the sleeve and is inserted into the gap between the two cantilevers, and the positioning bulge is used for positioning the orientation of the cantilevers of the supporting sheet.

The positioning bulge is positioned on a connecting line between the center of the magnetic ring and the center of the transmitting coil.

The bottom surface of the bottom cover is provided with at least two positioning columns, the positioning columns sequentially penetrate through the heat dissipation plate and the circuit board, and the positioning columns are used for fixing the positions of the circuit board and the heat dissipation plate in the shell.

The bottom surface of the bottom cover is provided with bulges at the joints with the positioning columns, and the bulges are used for separating the heat dissipation plate from the bottom surface of the bottom cover.

A positioning rod or a threaded cylinder or a metal nut is arranged in the middle of the front cover and penetrates through the middle hole of the transmitting coil to fix the position of the transmitting coil relative to the front cover.

The middle position of the bottom surface of the bottom cover is provided with a threaded hole or a metal nut, and the threaded hole or the metal nut is used for being in threaded connection with a screw arranged on an external object so as to realize mutual fixation.

Compared with the prior art, the invention has the beneficial effects that: fix circuit board and transmitting coil in step through setting up the backing sheet for circuit board and transmitting coil are also difficult not hard up through long-time the use, and structural stability is high, and is not fragile, has also improved simultaneously and has used the experience, is favorable to marketing.

Drawings

Fig. 1 is an assembled perspective view of a wireless charging module structure of the present invention.

Fig. 2 is an exploded view of the wireless charging module according to the present invention.

Fig. 3 is an assembly plan view of the wireless charging module structure of the present invention.

Fig. 4 is a sectional view taken along line a-a of fig. 3.

Fig. 5 is a bottom perspective exploded view of the wireless charging module structure of the present invention.

Fig. 6 is an exploded view of the wireless charging module structure and the vacuum chuck of the present invention.

Fig. 7 is an assembled perspective view of another exemplary wireless charging module structure of the present invention.

It should be noted that, the products shown in the above views are all appropriately reduced/enlarged according to the size of the drawing and the clear view, and the size of the products shown in the views is not limited.

Detailed Description

In order to more fully understand the technical contents of the present invention, the technical solutions of the present invention will be further described and illustrated with reference to the following specific embodiments.

An embodiment of the present invention is a wireless charging module structure 100, which is specifically shown in fig. 1 to 6.

As shown in fig. 1, the wireless charging module structure 100 includes a square housing 10. In other embodiments, the housing may be formed in other shapes, such as a circle, a regular polygon, a special shape, etc. The housing 10 includes a front cover 11 and a bottom cover 12 fixedly coupled to each other. The components of the wireless charging module structure 100 are disposed in the space between the front cover 11 and the bottom cover 12. The front cover 11 and the bottom cover 12 are detachably and fixedly connected. The housing 10 is provided with four evenly distributed perforations 13. The perforation 13 itself penetrates the front cover 11 and the bottom cover 12. The through hole 13 may penetrate a bolt and fix the wireless charging module structure 100 to an external object by the bolt. Still alternatively, the through hole 13 may penetrate a rope and bind the wireless charging module structure 100 to an external object through the rope. When concrete use, bind up wireless charging modular structure 100 arbitrary one end with the rope, but leave certain length, wireless charging modular structure 100 can freely move about, is close to just can adsorb automatically when intelligent terminal like this (the prerequisite is that charging terminal has ferromagnetic object), need take away when waiting charging terminal because wireless filling is bound up, will break away from with waiting charging terminal, and convenient to use nature is high.

The external object in this embodiment refers to some daily necessities, such as a vehicle-mounted support, a disinfection box, a bluetooth sound box, a mobile phone/tablet support, and the like.

As shown in fig. 2, a transmitting coil 21, a magnetic ring 25, a support piece 31, a circuit board 22 and a heat dissipating plate 23 are sequentially disposed from top to bottom in a space between the front cover 11 and the bottom cover 12. The transmitting coil 21 is used for transmitting electromagnetic waves, and receiving the electromagnetic waves by a terminal to be charged or a wireless charging receiving patch of the terminal, so as to charge the terminal. The circuit board 22 is provided with a power interface 24, and the power interface 24 is used for connecting an external power source to provide power for the wireless charging module structure 100. The circuit board 22 electrically connects the power interface 24 and the transmitting coil 21, respectively. In this embodiment, there are two power interfaces 24, which are USB Type-C socket 241 and Micro-USB socket 242. The USB Type-C jack 241 may be replaced with a USB-A, Mini-USB, Micro-USB, or Lightning Type jack. The Micro-USB socket 242 may be replaced with a USB-A, Mini-USB, USB Type-C or Lightning Type socket. The two power interfaces 24 of the first embodiment are arranged side by side at the same level and at a minimum distance of no more than 3mm from each other. In other embodiments, the two power interfaces may be disposed in parallel on the same vertical line, and the minimum distance between the two power interfaces does not exceed 2 mm.

As shown in fig. 2, the bottom cover 12 has four fastening locations 121, and the front cover 11 is fastened to the fastening locations 121 on the bottom cover 12, so that the front cover 11 and the bottom cover 12 can be fixedly connected to each other.

As shown in fig. 2 and 4, 4 magnetic rings 25 are disposed inside the front cover 11. 4 magnetic rings 25 are used for pasting the wireless subsides of charging on treating charging terminal through magnetic attraction fixed connection, perhaps are used for pasting sheetmetal or magnetic sheet on treating charging terminal through magnetic attraction fixed connection for the terminal of treating charging can easily aim at wireless transmitting coil 21 automatically, and convenient to use nature 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 tightly attached to the inner wall of the sleeve 111, so that the magnetic ring 25 cannot be loosened. A cylinder 126 coaxial with the magnetic ring 25 is arranged at the position of the bottom cover 12 corresponding to the magnetic ring 25. When the front cover 11 is fixedly connected with the bottom cover 12, the front cover 11 presses the supporting sheet 31 against the top surface of the cylinder 126 through the magnetic ring 25, that is, the supporting sheet 31 is clamped by 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 transmitter coil 21 at the periphery of the transmitter coil 21. Support piece 31 is located at a height position between transmitting coil 21 and 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 transmitter coil 21. The cantilever 32 is provided at its end with a vertical jack rod 33. After the front cover 11 and the bottom cover 12 are fixedly connected with each other, the magnetic ring 25 and the supporting sheet 31 are simultaneously clamped, the top end of the ejector rod 33 of the supporting sheet 31 abuts against the transmitting coil 21, the upper surface of the transmitting coil 21 is tightly attached to the front cover 11, and thus the transmitting coil 21 is clamped between the 4 supporting sheets 31 and the front cover 11, and fixation is realized. Meanwhile, the bottom surface of the cantilever 32 is abutted against the upper surface of the circuit board 22, and the circuit board 22 is closely attached to the lower heat dissipation plate 23, 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 functions to fix the transmitting coil 21, the circuit board 22, and the heat radiating plate 23 in synchronization.

In addition, as shown in fig. 2 and 4, each cylinder 126 of the bottom cover 12 is penetrated by one screw 26, and 4 screws 26 are provided. And the front cover 11 is provided with a screw cylinder 115 coaxial with the magnetic ring 25 at a middle position of each magnetic ring 25. Screws 26 extend through support plate 31 and thread into threaded barrel 115 to further strengthen the connection between front cover 11 and bottom cover 12.

It can be seen that the magnetic ring 25 can be used to fix the external terminal to be charged by magnetic attraction and also to transmit the force (clamping the support piece 31). The magnetic ring 25 and the screw 26 are coaxial, so that the extra position occupied by the magnetic ring 25 can be saved, and the volume of the wireless charging module structure 100 can be made smaller.

In the present embodiment, as shown in fig. 2, the support sheet 31 is provided with two parallel horizontal cantilevers 32, and a gap 34 is left between the two cantilevers 32. As shown in fig. 4 and 5, the end surface of the sleeve 111 facing the bottom cover 12 is provided with a positioning protrusion 116. When assembled, as shown in fig. 4, the positioning projection 116 is inserted into the gap 34 between the two cantilevers 32. The positioning protrusion 116 is located on a connecting line between the center of the magnetic ring 25 (i.e. the center of the sleeve 111) and the center of the transmitting coil 21. The positioning protrusion 116 is used to position the cantilever 32 of the supporting sheet 31 to face, so that the cantilever 32 of the supporting sheet 31 is kept facing the center of the transmitting coil 21, and the effect of the fixed structure is prevented from being affected by the offset. In other embodiments, the support plate may only have a wider horizontal cantilever, and a positioning hole is formed in the cantilever, and the positioning protrusion of the sleeve is inserted into the positioning hole of the cantilever to achieve the positioning function.

As shown in fig. 2, the magnet piece 27 is fixed to the inner surface of the bottom cover 12. If a ferromagnetic metal plate/block is correspondingly disposed on the external object, the magnet plate 27 may be used to fix the wireless charging module structure 100 to the external object by magnetic attraction.

The heat radiating plate 23 in fig. 2 may be made of a stainless iron sheet or a stainless steel sheet. The disassembled structure in fig. 2 is assembled, and the heat dissipation plate 23 and the circuit board 22 are parallel to each other and attached to each other. One of the functions of the heat dissipation plate 23 is to conduct heat generated from the circuit board 22. The second function of the heat dissipation plate 23 is to increase the overall weight, improve the holding hand feeling, and improve the use experience after the wireless charging module structure 100 becomes miniaturized, lighter in weight, and deteriorated in holding hand feeling. In addition, as shown in fig. 2, 4 positioning pillars 122 (two of which are hidden) are disposed on the bottom surface of the bottom cover 12. The positioning posts 122 sequentially penetrate through the heat dissipation plate 23 and the circuit board 22, so that the positioning posts 122 are used for fixing the positions of the circuit board 22 and the heat dissipation plate 23 in the bottom cover 12. The bottom surface of the bottom cover 12 is provided with mutually perpendicular plane protrusions 123 at the connection positions with the positioning columns 122, one function of the protrusions 123 is to enhance the strength of the positioning columns 122, and the other function is to separate the heat dissipation plate 23 from the bottom surface of the bottom cover 12, so as to avoid the uneven phenomenon caused by the fact that small burrs on the heat dissipation plate 23 abut against the bottom surface of the bottom cover 12.

As shown in fig. 5, a positioning rod 112 is provided at an intermediate position inside the front cover 11. The positioning rod 112 penetrates through the hole 211 (fig. 2) of the transmitting coil 21 to fix the position of the transmitting coil 21 relative to the front cover 11, so as to prevent the transmitting coil 21 from shifting in the horizontal plane to cause inaccurate alignment during wireless charging. In other embodiments, the positioning rod can be replaced by a threaded cylinder or a metal nut.

As shown in fig. 5, a screw hole 28 is formed at a middle position of the bottom surface of the bottom cover 12. The threaded holes 28 are used for screwing with screws provided on an external object to achieve mutual fixation. The screw holes 28 are provided in a cylinder 124 (fig. 2) in the middle of the bottom cover 12, and the cylinder 124 penetrates the circuit board 22 and the heat radiating plate 23. In other embodiments, the threaded bore may be replaced with a metal nut that is embedded. In other embodiments, as shown in FIG. 7, a threaded hole 113 is provided in the middle of the top surface of the front cover 11. The screw holes 113 are used for screw-coupling with screws provided on an external object to achieve mutual fixation. And the threaded bore 113 may instead be a metal nut that is embedded.

As shown in fig. 5, two rows of heat dissipation holes 125 are further formed in the bottom cover 12 for dissipating internal heat to prevent internal overheating and damage to components.

As shown in fig. 6, the bottom surface of the bottom cover 12 is provided with a surface area 29 for the vacuum chuck to be fixed. In use, as shown in FIG. 6, the two vacuum cups 89 are double-sided suction cups, one side of which is fixedly attached to the surface area 29 and the other side of which is fixedly attached to an external object. Alternatively, in other embodiments, one end of the two vacuum chucks is inserted into the small hole in the middle of the surface area to be fixed, and the other end is fixedly attracted to the external object.

In the description of the present invention, it should be noted that the terms "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above-mentioned description is only for the purpose of further explaining the technical contents of the present invention by way of example, so as to facilitate the reader's understanding, but does not represent a limitation to the embodiments of the present invention, and any technical extension or re-creation made by the present invention is protected by the present invention.

Claims

1. A wireless charging module structure is characterized by comprising a front cover and a bottom cover which are fixedly connected with each other, wherein a transmitting coil and a circuit board are arranged between the front cover and the bottom cover, at least two supporting pieces are clamped between the front cover and the bottom cover, the supporting pieces are uniformly distributed on the periphery of the transmitting coil around the center of the transmitting coil, the height position of the supporting pieces is between the transmitting coil and the circuit board, the transmitting coil is clamped between the supporting pieces and the front cover, and the circuit board is clamped between the supporting pieces and the bottom cover.

2. The wireless charging module structure of claim 1, further comprising a heat sink plate, wherein the heat sink plate is clamped between the circuit board and the bottom cover.

3. The wireless charging module structure of claim 1, wherein the supporting plate is provided with a horizontal cantilever, the cantilever is arranged between the circuit board and the transmitting coil, the tail end of the cantilever is provided with a vertical push rod, the top end of the push rod abuts against the transmitting coil, and the bottom surface of the cantilever abuts against the circuit board.

4. The structure of the wireless charging module as claimed in claim 1, wherein the inner side of the front cover is provided with a plurality of magnetic rings for fixedly connecting the wireless charging sticker or the metal sheet, the magnetic sheet attached to the terminal to be charged by magnetic attraction; the bottom cover is provided with a cylinder body at a position corresponding to the magnetic ring, the cylinder body is coaxial with the magnetic ring, and the magnetic ring and the cylinder body simultaneously clamp the support sheet.

5. The structure of the wireless charging module as claimed in claim 4, wherein a screw penetrates through the cylinder of the bottom cover, a threaded cylinder coaxial with the magnetic ring is provided at the middle position of the magnetic ring, and the screw penetrates through the support plate and is screwed into the threaded cylinder.

6. The structure of claim 4, wherein 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 tightly attached to the inner wall of the sleeve.

7. The wireless charging module structure of claim 6, wherein the supporting plate is provided with two parallel horizontal cantilevers, the cantilevers are arranged between the circuit board and the transmitting coil, the tail end of each cantilever is provided with a vertical ejector rod, the top end of each ejector rod abuts against the transmitting coil, and the bottom surface of each cantilever abuts against the circuit board; a gap is reserved between the two cantilevers, a positioning bulge is arranged on the end face, facing the bottom cover, of the sleeve and is inserted into the gap between the two cantilevers, and the positioning bulge is used for positioning the orientation of the cantilevers of the supporting sheet.

8. The wireless charging module structure of claim 7, wherein the positioning protrusion is located on a connection line between a center of the magnetic ring and a center of the transmitting coil.

9. The wireless charging module structure of claim 2, wherein at least two positioning posts are disposed 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.

10. The wireless charging module structure of claim 9, wherein the bottom surface of the bottom cover is provided with protrusions at the connection with the positioning posts, and the protrusions are used for separating the heat dissipation plate from the bottom surface of the bottom cover.

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

12. The wireless charging module structure of claim 1, wherein a screw hole or a metal nut is provided at a middle position of a bottom surface of the bottom cover, and the screw hole or the metal nut is used for screw-coupling with a screw provided on an external object to achieve mutual fixation.