Multifunctional wireless charger with illumination function

Abstract

The invention discloses a multifunctional wireless charger with illumination, and belongs to the technical field of chargers, the multifunctional wireless charger with illumination comprises a front shell, a rear shell, a circuit board, a fast charging coil, a mounting bin, a heat conducting plate and a telescopic body; and the driving mechanism is used for driving the telescopic body to generate expansion deformation when the heat of the quick charging coil reaches a fixed degree, so that a gap between two adjacent wire bodies in the quick charging coil is increased. According to the invention, when large current is introduced into the coil or large heat is generated under other conditions, the heat is transmitted to the driving mechanism through the heat conducting plate, and the driving mechanism drives the telescopic body to expand and deform, so that a gap between two adjacent wire bodies in the fast charging coil is increased, and the circuit board cuts off the current of the fast charging coil at the same time; therefore, the quick charging coil stops charging, heat between the wire bodies can be well dissipated to the surface of the front shell or the surface of the rear shell, and compared with the prior art, the quick charging coil is good in heat dissipation.

Description

Technical Field

[0001] The invention belongs to the technical field of chargers, and in particular relates to a multifunctional wireless charger with built-in lighting. Background Art

[0002] Wireless chargers are devices that use the principle of electromagnetic induction for charging. Its principle is similar to that of a transformer. A coil is placed at the sending and receiving ends. The sending coil sends an electromagnetic signal to the outside world under the action of electricity. The receiving coil receives the electromagnetic signal and converts it into current, thereby achieving the purpose of wireless charging. Wireless charging technology is a special power supply method that does not require a power cord, relies on electromagnetic wave propagation, and then converts electromagnetic wave energy into electrical energy, ultimately achieving wireless charging.

[0003] Wireless chargers generate magnetic fields through coils, and then use the principle of electromagnetic coupling to charge mobile phones and other electrical devices. When current is passed through the coil, it will inevitably generate heat. When the heat generated by the coil is large, it needs to be dissipated in time, otherwise there may be a risk of burning. Current wireless chargers mainly rely on heat transfer between their own casing and the coil to dissipate heat. This heat dissipation method is less efficient. Since the coils are arranged closely in the wireless charger, the heat dissipation of the coil is slower. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a multifunctional wireless charger with built-in lighting.

[0005] The technical solution adopted to solve the above technical problems is: a multifunctional wireless charger with built-in lighting, comprising a front shell and a rear shell of the wireless charger, wherein a circuit board and a fast charging coil are installed in the inner cavity of the rear shell, wherein the fast charging coil is electrically connected to the circuit board, and further comprising:

[0006] A mounting chamber fixedly connected to the inner wall of the rear housing, wherein the interior of the mounting chamber is hollow and a heat conducting plate is installed at the opening thereof;

[0007] A telescopic body is connected to the surface of the heat conducting plate, the fast charging coil is connected to the telescopic body, and the gap between adjacent wire bodies is adjusted when the telescopic body is deformed by telescopic deformation;

[0008] A driving mechanism is installed in the installation bin, and the driving mechanism is used to drive the telescopic body to expand and deform when the heat of the fast charging coil reaches a fixed level, thereby increasing the gap between two adjacent wire bodies in the fast charging coil.

[0009] Through the above technical solution, when a large current is passed through the coil or a large amount of heat is generated under other circumstances, the heat is transferred to the driving mechanism through the heat conductive plate, and the driving mechanism drives the telescopic body to expand and deform, thereby increasing the gap between the two adjacent wires in the fast charging coil. At the same time, the circuit board disconnects the current of the fast charging coil, so that the fast charging coil stops charging. In addition, since the gap between the two adjacent wires in the fast charging coil increases, the heat between the wires can be better dissipated to the surface of the front shell and / or the rear shell, which makes the fast charging coil have better heat dissipation compared to the existing technology.

[0010] Furthermore, a spring clip mounting groove is provided on the outer surface of the front shell, a first memory metal sheet is snap-fittedly installed in the spring clip mounting groove, one end of the first memory metal sheet is fixedly connected to a first heat conductive sheet, the first heat conductive sheet is passed through the front shell, and one end of the first heat conductive sheet that passes through the inner surface of the front shell is fixedly connected to a second heat conductive sheet, the surface of the second heat conductive sheet is in contact with the inner surface of the front shell, and a slot is provided on the surface of the front shell for the first heat conductive sheet to pass freely.

[0011] Through the above technical solution, when the heat of the fast charging coil is transferred to the second heat conductive sheet, it is transferred to the first heat conductive sheet through the second heat conductive sheet, and then transferred to the first memory metal sheet. The first memory metal sheet is heated and produces elastic bending deformation, and pushes the device to be charged against the surface of the front shell away from the front shell, preventing heat from being transferred to the device to be charged and causing damage to the device to be charged.

[0012] Furthermore, the circuit board is electrically connected to a lamp body, and a through hole is provided on the surface of the rear shell body for the lamp body to pass freely.

[0013] Through the above technical solution, the lamp body is provided, which can facilitate charging operations in environments with poor visibility.

[0014] Furthermore, the outer contour of the telescopic body is in the shape of a spiral spring, and a wire clamping groove adapted to the fast charging coil wire body is opened on a side of the telescopic body facing the front shell body, and the wire body of the fast charging coil is fixedly connected to the wire clamping groove.

[0015] Through the above technical solution, when the telescopic body produces telescopic deformation, it can drive the wire body of the fast charging coil to expand and contract synchronously, so that the gap between the wire bodies can be adjusted.

[0016] Furthermore, the driving mechanism includes a pin fixedly connected to the end of the telescopic body outer ring, the surface of the heat conducting plate is provided with a pin hole for the pin to fit tightly, and the heat conducting plate is provided with a driving unit for driving the telescopic body inner ring to move radially along the heat conducting plate.

[0017] Through the above technical solution, the pin is inserted into the pin hole, thereby fixing the outer ring of the telescopic body on the heat conducting plate, so that when the inner ring of the telescopic body is driven to move, the telescopic body will produce telescopic deformation.

[0018] Furthermore, the driving unit includes a rotating sleeve coaxially rotatably connected to the end face of the heat conducting plate, the rotating sleeve is coaxially fixed with a connecting sleeve facing one end face of the front shell body, the connecting sleeve end face is hinged with a pull rod, the inner ring end of the telescopic body is fixed with an ear block, the surface of the ear block is vertically fixed with a fixing pin, the end of the pull rod away from the connecting sleeve is rotatably sleeved on the periphery of the fixing pin, the inner cavity wall of the rear shell body is vertically fixed with a fixing sleeve, a floating column is telescopically inserted and installed in the fixing sleeve, one end of the floating column protruding from the fixing sleeve is inserted in the rotating sleeve, a ball is rotatably embedded in the periphery of the floating column, a spiral groove for the ball to engage is opened on the inner hole wall of the rotating sleeve, the ball rotates freely in the spiral groove, and a thermal deformation driving component for driving the floating column to move axially along the rotating sleeve is provided on the heat conducting plate.

[0019] Through the above technical scheme, the floating column is driven to move by the thermal deformation driving component. When the floating column moves, the ball will roll in the spiral groove, thereby driving the rotating sleeve to rotate. When the rotating sleeve rotates, the connecting sleeve is synchronously driven to rotate. When the connecting sleeve rotates, the pull rod will pull the inner ring of the telescopic body toward the radial inner side of the heat conduction plate, so that the telescopic body can expand, thereby increasing the wire gap of the fast charging coil.

[0020] Furthermore, the thermal deformation driving assembly includes a fixing ring fixedly sleeved on the periphery of the floating column, and a second memory metal sheet is fixedly connected to the periphery of the fixing ring. In an unheated state, the surface of the second memory metal sheet fits the surface of the heat conducting plate.

[0021] Through the above technical solution, after the heat of the fast charging coil is transferred to the heat conducting plate, the second memory metal sheet will be heated. After being heated to a certain degree, the second memory metal sheet will produce an upward elastic bending deformation, thereby pushing the fixing ring to move downward, so that the floating column moves toward the direction close to the inner cavity wall of the rear shell body, so that when the fast charging coil generates a large amount of heat, the wire gap of the fast charging coil can be increased in time, thereby being able to dissipate the heat of the fast charging coil.

[0022] Furthermore, a plastic spring is installed in the fixing sleeve, and two ends of the plastic spring in the elastic force direction elastically press against the end surface of the floating column and the inner cavity wall of the rear shell body respectively.

[0023] Through the above technical solution, when the floating column moves toward the inner cavity wall close to the rear shell body, the plastic spring will be compressed. When the second memory metal sheet recovers its deformation, the elastic potential energy of the plastic spring will drive the floating column to move toward the heat conductive plate, thereby causing the telescopic body to shrink from the expanded deformation state, thereby reducing the wire gap of the fast charging coil until the adjacent wires are closely arranged for normal charging.

[0024] Furthermore, a short pin is fixedly connected to one end of the floating column away from the heat conducting plate, and a waist-shaped hole for the short pin to be inserted is opened on the periphery of the fixed sleeve. The short pin slides freely in the waist-shaped hole along the axial direction of the floating column.

[0025] Through the above technical solution, the short pin slides in the waist-shaped hole, so that the short pin can limit the floating column in the circumferential direction, so that when the rotating sleeve rotates, the floating column will not be caused to rotate with it.

[0026] Furthermore, a leg structure is installed on the outer surface of the rear shell, and a support frame is fixedly connected to the lower surface of the front shell.

[0027] Through the above technical solution, the leg structure facilitates the tilting of the rear shell for charging the charging device, and the bracket can support the charging device, thereby allowing the surface of the charging device to fit against the surface of the front shell for charging.

[0028] The beneficial effects of the present invention are as follows:

[0029] (1) In the present invention, when a large current flows through the coil or a large amount of heat is generated under other circumstances, the heat is transferred to the driving mechanism via the heat conducting plate, and the driving mechanism drives the telescopic body to expand and deform, thereby increasing the gap between two adjacent wires in the fast charging coil. At the same time, the circuit board disconnects the current of the fast charging coil, causing the fast charging coil to stop charging. In addition, since the gap between two adjacent wires in the fast charging coil increases, the heat between the wires can be better dissipated to the surface of the front shell and / or the rear shell, which makes the fast charging coil have better heat dissipation than the prior art;

[0030] (2) In the present invention, the floating column is driven to move by the thermal deformation driving component. When the floating column moves, the ball will roll in the spiral groove, thereby driving the rotating sleeve to rotate. When the rotating sleeve rotates, it will synchronously drive the connecting sleeve to rotate. When the connecting sleeve rotates, the pull rod will pull the inner ring of the telescopic body to move toward the radial inner side of the heat conducting plate, so that the telescopic body can expand, thereby increasing the wire body gap of the fast charging coil;

[0031] (3) In the present invention, when the heat of the fast charging coil is transferred to the second heat conductive sheet, it is then transferred to the first heat conductive sheet via the second heat conductive sheet, and then transferred to the first memory metal sheet. The first memory metal sheet is heated and undergoes elastic bending deformation, and pushes the device to be charged against the surface of the front shell away from the front shell, thereby preventing heat from being transferred to the device to be charged and causing damage to the device to be charged. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of a multifunctional wireless charger with built-in lighting in the present invention;

[0033] Figure 2 yes Figure 1 A schematic diagram of the structure from another perspective;

[0034] Figure 3 It is a schematic diagram of the positional relationship after the front housing is omitted in the present invention;

[0035] Figure 4 yes Figure 3 The schematic diagram of the position relationship after the circuit board is omitted;

[0036] Figure 5 yes Figure 4 Schematic diagram of the positional relationship of some structures after being cut open from another perspective;

[0037] Figure 6 yes Figure 5 A magnified schematic diagram of the local structure at point A;

[0038] Figure 7 It is a schematic diagram of the positional relationship of the heat conducting plate, the fast charging coil, the floating column, and the second memory metal sheet after assembly in the present invention;

[0039] Figure 8 yes Figure 7 Schematic diagram of the explosion decomposition of the structure;

[0040] Fig. 9 yes Figure 8 A magnified schematic diagram of the local structure at B in the middle;

[0041] Fig.10 It is a schematic diagram of the positional relationship between the telescopic body and the fast charging coil after assembly in the present invention;

[0042] Fig.11 Yes Fig.10 Schematic diagram of the explosion decomposition of the structure;

[0043] Fig.12 yes Fig.11 A magnified schematic diagram of the local structure at C in the middle;

[0044] Fig.13It is a schematic structural diagram of the front housing in the present invention;

[0045] Fig.14 yes Fig.13 A schematic diagram of the structure from another perspective;

[0046] Fig.15 It is a schematic diagram of the positional relationship of the first memory metal sheet, the first heat conducting sheet and the second heat conducting sheet after being assembled in the present invention;

[0047] Fig.16 It is a schematic diagram of the positional relationship between the connecting sleeve and the rotating sleeve after being assembled in the present invention.

[0048] : Illustrations: 1. support frame; 2. support leg structure; 3. rear shell; 4. lamp body; 5. front shell; 6. first memory metal sheet; 7. circuit board; 8. fast charging coil; 9. connecting sleeve; 10. installation compartment; 11. heat conducting plate; 12. floating column; 13. pull rod; 14. fixing sleeve; 15. short pin; 16. waist-shaped hole; 17. plastic spring; 18. fixing ring; 19. second memory metal sheet; 20. telescopic body; 21. spiral groove; 22. rotating sleeve; 23. ball; 24. ear block; 25. pin; 26. wire clamping groove; 27. spring clip installation groove; 28. slot; 29. ​​first heat conducting sheet; 30. second heat conducting sheet. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0050] like Figure 1-Figure 16As shown, the present embodiment provides a multifunctional wireless charger with built-in lighting, including a front shell 5 and a rear shell 3 of the wireless charger, the front shell 5 and the rear shell 3 are connected by screws, an L-shaped support frame 1 is fixedly connected to the outer surface of the front shell 5, the horizontal section of the support frame 1 is fixedly connected to the surface of the front shell 5, and the vertical section thereof extends upward, so that a device to be charged, such as a mobile phone, can be placed vertically on the support frame 1, and the surface of the device to be charged is made to fit with the outer surface of the front shell 5, a spring clip mounting groove 27 is provided on the outer surface of the front shell 5, a first memory metal sheet 6 is snap-fittedly mounted in the spring clip mounting groove 27, one end of the first memory metal sheet 6 is fixedly connected to a first heat conductive sheet 29, the first heat conductive sheet 29 is penetrated by the front shell 5, and the first heat conductive sheet 29 is One end of the heat sheet 29 that penetrates into the inner surface of the front shell 5 is fixedly connected with the second heat conductive sheet 30, and the surface of the second heat conductive sheet 30 is in contact with the inner surface of the front shell 5. A slot 28 is provided on the surface of the front shell 5 for the first heat conductive sheet 29 to pass freely. The first memory metal sheet 6 will not bend or deform when it is not heated or at room temperature. When the heat increases, the first memory metal sheet 6 will bend and deform. The end of the first memory metal sheet 6 away from the first heat conductive sheet 29 will bend and deform toward the outside of the front shell 5. In this way, the device to be charged placed on the bracket 1 can be pushed away, so that the contact area between the surface of the device to be charged and the surface of the front shell 5 is reduced, thereby preventing heat from being transferred to the device to be charged and damaging the device to be charged.

[0051] A leg structure 2 is installed on the outer wall of the rear shell 3. The leg structure 2 can rotate and be fixed after rotation, so that the rear shell 3 can be placed upright on a horizontal placement surface at an angle for charging by the charging device. A circuit board 7 and a fast charging coil 8 are installed in the inner cavity of the rear shell 3. The fast charging coil 8 is electrically connected to the circuit board 7, and the circuit board 7 is electrically connected to the lamp body 4. A through hole is opened on the surface of the rear shell 3 for the lamp body 4 to pass freely. In addition, a button switch (not shown in the figure) is installed on the rear shell 3. The button switch can control the power on and off of the lamp body 4, which is convenient for charging operations in an environment with poor visibility. A mounting chamber 10 is vertically fixed to the cavity wall of the rear shell 3. The interior of the mounting chamber 10 is hollow and is open at one end facing the front shell 5. A heat conducting plate 11 is installed on the mouth of the mounting chamber 10 by screws. The heat conducting plate 11 faces one side surface of the front shell 5. The extension body 20 is connected to the contact, and the cylinder of the extension body 20 is made of plastic material and has good elastic deformation ability. Since the fast charging coil 8 is arranged in a spiral spring shape, the wire cores at the inner and outer ends of the fast charging coil 8 are electrically connected to the circuit board 7. The outer contour of the extension body 20 in this embodiment is also in the shape of a spiral spring, and the side of the extension body 20 facing the front shell 5 is provided with a wire clamping groove 26 adapted to the wire body of the fast charging coil 8 (in fact, the fast charging coil 8 is a copper wire with an insulating outer skin on the surface. In this embodiment, for ease of understanding, each circle of the fast charging coil 8 is defined as a wire body). The inner diameter of the wire clamping groove 26 is adapted to the outer diameter of the wire body, and the wire body is fixedly installed in the wire clamping groove 26 by bonding. When the extension body 20 is in a natural state, the two adjacent wire bodies in the fast charging coil 8 are closely arranged together, so that the fast charging coil 8 generates a larger magnetic field intensity after the current is passed;

[0052] The outer ring end of the telescopic body 20 is fixedly connected with a latch 25, and the surface of the heat conducting plate 11 is provided with a pin hole for the latch 25 to be tightly fitted and inserted. The end face of the heat conducting plate 11 is embedded with a bearing, and the inner ring of the bearing is equipped with a rotating sleeve 22, and the rotating sleeve 22 is coaxial with the heat conducting plate 11. The end face of the rotating sleeve 22 facing the front housing 5 is coaxially fixed with a connecting sleeve 9, and the end face of the connecting sleeve 9 is hinged with a pull rod 13. The inner ring end of the telescopic body 20 is fixedly connected with an ear block 24, and a fixing pin is vertically fixed to the surface of the ear block 24. The pull rod 13 is away from One end of the connecting sleeve 9 is rotatably sleeved on the periphery of the fixing pin, and a fixing sleeve 14 is vertically fixed to the inner wall of the rear housing 3. A floating column 12 is telescopically inserted and installed in the fixing sleeve 14. One end of the floating column 12 passing through the fixing sleeve 14 is inserted into the rotating sleeve 22. Two balls 23 are rotatably embedded on the periphery of the floating column 12. The two balls 23 are symmetrically arranged along the axial direction of the floating column 12. A spiral groove 21 for the balls 23 to engage is opened on the inner hole wall of the rotating sleeve 22, and the balls 23 rotate freely in the spiral groove 21.

[0053] A fixing ring 18 is fixedly sleeved on the periphery of the floating column 12, and two second memory metal sheets 19 are symmetrically fixedly connected to the periphery of the fixing ring 18. In an unheated state (or at room temperature), the second memory metal sheet 19 does not bend or deform, so that the second memory metal sheet 19 is in contact with the surface of the heat conducting plate 11 on one side thereof, so that the heat of the heat conducting plate 11 can be transferred to the second memory metal sheet 19. A plastic spring 17 is installed in the fixing sleeve 14. The plastic spring The two ends of the elastic force direction 17 elastically press against the end surface of the floating column 12 and the inner cavity wall of the rear shell body 3 respectively. In addition, a short pin 15 is fixedly connected to one end of the floating column 12 away from the heat conducting plate 11. A waist-shaped hole 16 for the short pin 15 to be inserted is provided on the periphery of the fixed sleeve 14. The short pin 15 slides freely in the waist-shaped hole 16 along the axial direction of the floating column 12. In addition, in the present embodiment, the floating column 12, the connecting sleeve 9, the rotating sleeve 22, and the pull rod 13 are all made of plastic material, so as to avoid affecting the magnetic field generated by the fast charging coil 8.

[0054] The working principle of this embodiment is as follows:

[0055] The leg structure 2 is rotated to place the rear housing 3 upright on a horizontal placement surface, and then the device to be charged is placed on the support frame 1, which is supported by the support frame 1 so that the surface of the device to be charged can be in contact with the surface of the front housing 5. The circuit board 7 energizes the fast charging coil 8 through the existing technology, and the fast charging coil 8 generates a magnetic field, thereby charging the device to be charged.

[0056] When the fast charging coil 8 generates a lot of heat, the circuit board 7 will disconnect the current of the fast charging coil 8, so that the fast charging coil 8 stops working. Specifically, a chip temperature sensor can be installed in the inner cavity of the rear housing 3, and the chip temperature sensor is electrically connected to the circuit board 7, so as to detect the heat generated by the fast charging coil 8;

[0057] When the heat of the fast charging coil 8 is transferred to the second heat conductive sheet 30, the heat will be transferred from the second heat conductive sheet 30 to the first heat conductive sheet 29, and then transferred to the first memory metal sheet 6. The first memory metal sheet 6 is bent and deformed, thereby pushing the device to be charged, so that the surface of the device to be charged is out of contact with the surface of the front housing 5 or the contact area is reduced;

[0058] The heat of the fast charging coil 8 will also be transferred to the heat conducting plate 11, and then transferred from the heat conducting plate 11 to the second memory metal sheet 19. After being heated, the second memory metal sheet 19 will be elastically bent and deformed, that is, the end of the second memory metal sheet 19 away from the fixing ring 18 will bend toward the heat conducting plate 11, thereby pushing the floating column 12 to move away from the heat conducting plate 11. When the floating column 12 moves, it will make the ball 23 roll in the spiral groove 21. Since the short pin 15 is inserted into the waist-shaped hole 16, the floating column 12 is circumferentially limited, so that the rotating sleeve 22 will pass When the ball 23 rolls in the spiral groove 21 and squeezes the inner wall of the spiral groove 21, a rotational motion is generated. When the rotating sleeve 22 rotates, the pull rod 13 pulls the fixed pin to move, so that the fixed pin drives the inner ring of the telescopic body 20 to move slightly toward the direction of the floating column 12. Since the outer ring of the telescopic body 20 is limited by the latch 25 and the pin hole, the inner ring of the telescopic body 20 will move away from the outer ring, so that the telescopic body 20 is in an elastically expanded deformation state, which will increase the gap between the fast charging coil 8 and the heat dissipation area of ​​the wire body, which is conducive to the timely heat dissipation of the fast charging coil 8.

[0059] In addition, when the floating column 12 moves in a direction away from the heat conducting plate 11, it will compress the plastic spring 17, so that the plastic spring 17 accumulates elastic potential energy. In this way, when the heat of the fast charging coil 8 is dissipated, the second memory metal sheet 19 will restore its deformation, that is, the second memory metal sheet 19 will change from a bent deformation state to an initial state, and the elastic potential energy accumulated by the plastic spring 17 will be released, and drive the floating column 12 to move in the direction of the heat conducting plate 11, so that the pull rod 13 drives the fixing pin to move in the reverse direction, and then the telescopic body 20 changes from an elastic expansion deformation state to a contraction state, so that the gap between the fast charging coil 8 lines is reduced until they are in a closely arranged state;

[0060] Furthermore, in order to prevent the telescopic body 20 from moving along the axial direction of the floating column 12, in this embodiment, the inner cavity wall of the front shell 5 can be in contact with the surface of the fast charging coil 8, so that the telescopic body 20 will not move along the axial direction of the floating column 12, which will produce another unexpected effect, that is, if the charger in this embodiment falls, since the telescopic body 20 is telescopic, when the fast charging coil 8 is subjected to vibration force, the telescopic body 20 can buffer the impact of the vibration force on the fast charging coil 8 by telescoping, and the fast charging coil 8 is resisted by the inner cavity wall of the front shell 5, which will not cause the fast charging coil 8 to loosen due to impact. The fast charging coil 8 of a traditional wireless charger is generally glued to the rear shell 3 with glue or other adhesives. When it falls, it is easy to be impacted and scattered, thereby affecting the charging effect. Therefore, this embodiment avoids the phenomenon that the fast charging coil 8 of a traditional wireless charger becomes loose and affects the charging effect when it falls.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A multifunctional wireless charger with built-in lighting, comprising a front shell (5) and a rear shell (3) of the wireless charger, wherein a circuit board (7) and a fast charging coil (8) are installed in the inner cavity of the rear shell (3), and the fast charging coil (8) is electrically connected to the circuit board (7), characterized in that: Also includes: A mounting chamber (10) fixedly connected to the inner wall of the rear housing (3), wherein the interior of the mounting chamber (10) is hollow and a heat conducting plate (11) is installed at its opening; A telescopic body (20) is abutted against and connected to the surface of the heat conducting plate (11), the fast charging coil (8) is connected to the telescopic body (20), and the size of the gap between adjacent wire bodies is adjusted when the telescopic body (20) is deformed by telescoping; A driving mechanism is installed in the installation bin (10), and is used to drive the telescopic body (20) to expand and deform when the heat of the fast charging coil (8) reaches a fixed level, thereby increasing the gap between two adjacent wire bodies in the fast charging coil (8).

2. The multifunctional wireless charger with built-in lighting according to claim 1, characterized in that: The outer surface of the front shell (5) is provided with a spring plate installation groove (27), a first memory metal sheet (6) is installed in a snap-fitting manner in the spring plate installation groove (27), one end of the first memory metal sheet (6) is fixedly connected to a first heat conductive sheet (29), the first heat conductive sheet (29) is inserted into the front shell (5), and one end of the first heat conductive sheet (29) that penetrates into the inner surface of the front shell (5) is fixedly connected to a second heat conductive sheet (30), the surface of the second heat conductive sheet (30) is in contact with the inner surface of the front shell (5), and the surface of the front shell (5) is provided with a slot (28) for the first heat conductive sheet (29) to pass freely.

3. The multifunctional wireless charger with built-in lighting according to claim 1, characterized in that: The circuit board (7) is electrically connected to a lamp body (4), and a through hole is provided on the surface of the rear shell body (3) for the lamp body (4) to pass freely.

4. The multifunctional wireless charger with built-in lighting according to claim 1, characterized in that: The outer contour of the telescopic body (20) is in the shape of a spiral spring, and a wire clamping groove (26) adapted to the wire body of the fast charging coil (8) is provided on one side of the telescopic body (20) facing the front shell body (5), and the wire body of the fast charging coil (8) is fixedly connected in the wire clamping groove (26).

5. The multifunctional wireless charger with built-in lighting according to claim 4, characterized in that: The driving mechanism comprises a latch (25) fixedly connected to the end of the outer ring of the telescopic body (20); a pin hole for the latch (25) to be tightly fitted and inserted is provided on the surface of the heat conducting plate (11); and a driving unit for driving the inner ring of the telescopic body (20) to move radially along the heat conducting plate (11) is provided on the heat conducting plate (11).

6. The multifunctional wireless charger with built-in lighting according to claim 5, characterized in that: The driving unit comprises a rotating sleeve (22) coaxially rotatably connected to the end face of the heat conducting plate (11); the rotating sleeve (22) is coaxially fixedly connected to a connecting sleeve (9) at one end face facing the front housing (5); a pull rod (13) is hingedly connected to the end face of the connecting sleeve (9); an ear block (24) is fixedly connected to the end of the inner ring of the telescopic body (20); a fixing pin is vertically fixedly connected to the surface of the ear block (24); an end of the pull rod (13) away from the connecting sleeve (9) is rotatably sleeved on the periphery of the fixing pin; and a fixing sleeve (14) is vertically fixedly connected to the inner cavity wall of the rear housing (3). A floating column (12) is telescopically inserted and installed in the fixed sleeve (14); one end of the floating column (12) protruding from the fixed sleeve (14) is inserted into the rotating sleeve (22); a ball (23) is rotatably embedded in the periphery of the floating column (12); a spiral groove (21) for the ball (23) to engage is provided on the inner hole wall of the rotating sleeve (22); the ball (23) rotates freely in the spiral groove (21); and a thermal deformation driving component for driving the floating column (12) to move axially along the rotating sleeve (22) is provided on the heat conducting plate (11).

7. The multifunctional wireless charger with built-in lighting according to claim 6, characterized in that: The thermal deformation driving component comprises a fixing ring (18) fixedly sleeved on the periphery of the floating column (12); a second memory metal sheet (19) is fixedly connected to the periphery of the fixing ring (18); in an unheated state, the surface of the second memory metal sheet (19) is in contact with the surface of the heat conducting plate (11).

8. The multifunctional wireless charger with built-in lighting according to claim 7, characterized in that: A plastic spring (17) is installed in the fixing sleeve (14), and the two ends of the plastic spring (17) in the elastic force direction elastically press against the end surface of the floating column (12) and the inner cavity wall of the rear shell (3) respectively.

9. The multifunctional wireless charger with built-in lighting according to claim 7, characterized in that: A short pin (15) is fixedly connected to one end of the floating column (12) away from the heat conducting plate (11), and a waist-shaped hole (16) for the short pin (15) to be inserted is provided on the periphery of the fixed sleeve (14), and the short pin (15) is freely slidable in the waist-shaped hole (16) along the axial direction of the floating column (12).

10. The multifunctional wireless charger with built-in lighting according to claim 1, characterized in that: A leg support structure (2) is installed on the outer surface of the rear shell (3), and a support frame (1) is fixedly connected to the lower surface of the front shell (5).

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