Multipurpose wireless charging device

Abstract

The invention discloses a multipurpose wireless charging device, and relates to the technical field of wireless charging, the multipurpose wireless charging device comprises a bottom shell, one side of the bottom shell is provided with a groove cavity facilitating installation of a charging coil, and the charging coil used for wireless charging is coiled in the charging coil. When a mobile phone is charged, the vehicle-mounted clamping piece is placed on a table top, a power line is connected with the power socket, then the mobile phone is placed on the tempered disc, based on the electromagnetic induction phenomenon, when current passes through the charging coil, a magnetic field is generated, the receiving coil which is not powered on is placed in the magnetic field, then current is generated, and charging is achieved; during vehicle-mounted use, the air outlet clamping piece is not installed, the whole charging device is put into a water cup holder in the middle of the central armrest or a vehicle-mounted ashtray box, the vehicle-mounted clamping piece is supported outwards after the charging device is put into the water cup holder or the vehicle-mounted ashtray box, stable fixing of the whole device is achieved, then a mobile phone is put on the vehicle-mounted clamping piece, and stable charging of the mobile phone in the vehicle running process can be achieved.

Description

Technical Field

[0001] The present invention specifically relates to the technical field of wireless charging, and specifically relates to a multi-purpose wireless charging device. Background Art

[0002] Wireless charging technology is based on the electromagnetic induction phenomenon. When an electric current passes through the transmitting coil, a magnetic field is generated. When the unpowered receiving coil is placed in this magnetic field, an induced electromotive force will be generated, and then an electric current will be generated to achieve charging.

[0003] Chinese Patent Publication No. CN 210350824 U provides a wireless charger for wireless charging and wire storage of electronic devices. It includes a first housing, a second housing and a charger. The first housing and the second housing are arranged opposite to each other, and the first housing and the second housing are snap-connected to form a storage cavity. The charger is arranged on the surface of the first housing away from the second housing. The charger is provided with a wire, and the wire can be wound and placed into the storage cavity.

[0004] The wireless charger in the above patent is a simple charging method and can only be placed on the table for charging during use; the usage state is relatively single; for example: the wireless charger in the above patent cannot be used in a vehicle, because when used in a vehicle, the shaking of the vehicle body will cause the mobile phone to slide off the wireless charger; and the wireless charger does not have the function of clamping the mobile phone. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-purpose wireless charging device that can be placed alone on the table for use, can be used in a vehicle, and can ensure that the mobile phone does not slide off, and can be used as a mobile phone holder, thereby realizing the versatility of wireless charging. To solve the technical problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A multi-purpose wireless charging device includes a bottom case. A cavity is provided on one side of the bottom case for facilitating the installation of a charging coil. A charging coil for wireless charging is wound inside the charging coil, and a tempered glass disc is provided outside the charging coil; the tempered glass disc is adhesively fixed to the bottom case;

[0008] The bottom case is snap-connected to a chassis assembly, and a mobile phone clamping member for facilitating the fixation of the mobile phone is provided between the bottom case and the chassis assembly;

[0009] A vehicle clamping member is provided at the bottom of the chassis assembly, and a housing is provided outside the vehicle clamping member. A trapezoidal clamping block is integrally provided on the outside of the housing; the outside of the trapezoidal clamping block is snap-connected to a trapezoidal shell, and an air outlet clamping member is fixed on the outside of the trapezoidal shell.

[0010] As a further technical solution of the present invention, the bottom case includes a housing which is arranged in a stepped shape, and a plurality of claw teeth are annularly arranged at the bottom of the housing; a power socket is arranged on one side of the housing, and the power socket is electrically connected to a charging coil.

[0011] As a further technical solution of the present invention, the chassis assembly includes a chassis housing, a clamping groove which is buckled with the claw teeth is formed above the chassis housing, and retraction grooves which are convenient for the clamping arms to be received are formed on both sides of the chassis housing; a guiding frame is also fixed inside the chassis housing.

[0012] As a further technical solution of the present invention, the mobile phone clamping member includes a movable member which is slidably connected to the guiding frame, one end of the movable member is meshed with a first gear and a second gear, and a clamping arm is cooperatively installed on the outside of each of the first gear and the second gear.

[0013] As a further technical solution of the present invention, the movable member includes a mobile phone supporting member, a first rack and a second rack are arranged on one side of the mobile phone supporting member, the first rack and the second rack are arranged in a vertically staggered manner, and the tooth profiles of the first rack and the second rack face in opposite directions;

[0014] The first rack is meshed with the second gear; the second rack is meshed with the first gear;

[0015] The second gear is installed in a through groove formed in the guiding frame through a rotating shaft; the first gear is rotatably connected to a fixed column.

[0016] As a further technical solution of the present invention, the clamping arm includes a supporting arm which is movably connected to one end of the retraction groove through a rotating shaft; an arc-shaped tooth member is arranged at one end of the supporting arm, a cavity is formed at the other end of the supporting arm, and a pushing spring is arranged in the cavity; a T-shaped column is arranged above the pushing spring;

[0017] One side of the upper end of the T-shaped column has an arc-shaped surface which faces the retraction groove.

[0018] As a further technical solution of the present invention, an inner middle plate is arranged between the first rack and the second rack, guiding rods are fixed between the first rack, the second rack, the inner middle plate and the mobile phone supporting member, and a telescopic spring is sleeved on the guiding rods;

[0019] One end of the telescopic spring abuts against the inner middle plate, and the other end abuts against the inner side of an end plate; the end plate is fixed to the guiding frame.

[0020] As a further technical solution of the present invention, the vehicle-mounted clamping member includes a fixed disk, and a movable disk is provided below the fixed disk. A plurality of U-shaped seats are annularly arranged around the bottom of the fixed disk. Each U-shaped seat is movably connected with a connecting piece and an L-shaped connecting frame through a rotating shaft. The connecting piece and the L-shaped connecting frame are also movably connected with an inner support member through a rotating shaft; the movable disk is movably connected with the L-shaped connecting frame through a rotating shaft;

[0021] An adjusting spring is further provided between the fixed disk and the movable disk; a jacking rod is fixed at the bottom of the movable disk.

[0022] As a further technical solution of the present invention, a plurality of groove-shaped openings for facilitating the protrusion of the inner support member are provided around the outer shell body.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. In the daily use process of the present invention, the air outlet clamping member is removed, so that the vehicle-mounted clamping member squats on the desktop. The power cord is connected to the power socket, and then the mobile phone is placed on the tempered glass disk. Based on the electromagnetic induction phenomenon, when an electric current passes through the charging coil, a magnetic field is generated. When the unpowered receiving coil is placed in this magnetic field, an induced electromotive force will be generated, and then an electric current will be generated to achieve charging;

[0025] 2. When the present invention is used in a vehicle, the air outlet clamping member is not installed. The entire charging device is placed into the water cup holder in the middle of the central armrest or the vehicle ashtray box. After being placed, the vehicle-mounted clamping member propping outwards to achieve the stable fixation of the entire device. Then the mobile phone is placed on it, and the mobile phone can be stably charged during the driving of the vehicle;

[0026] 3. When the present invention is used as a mobile phone holder, the air outlet clamping member is clamped and fixed through a trapezoidal shell and a trapezoidal block; then the air outlet clamping member is clamped and fixed with the air outlet of the vehicle, thereby realizing the installation of the device on the vehicle. Subsequently, the mobile phone is clamped and fixed with the mobile phone clamping member, and the installation of the mobile phone is realized, so that the mobile phone can be used for navigation while charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0028] Figure 2 is in the present invention Figure 1 bottom structural schematic diagram.

[0029] Figure 3 is in the present invention Figure 1 rear side structural schematic diagram.

[0030] Figure 4 is in the present inventionFigure 3 Internal structure schematic diagram.

[0031] Figure 5 In the present invention Figure 4 Planar structure schematic diagram.

[0032] Figure 6 In the present invention Figure 1 Split structure schematic diagram.

[0033] Figure 7 In the present invention Figure 6 Another perspective schematic diagram.

[0034] Figure 8 In the present invention Figure 1 Planar structure schematic diagram.

[0035] Figure 9 In the present invention Figure 8 A-A sectional view.

[0036] Figure 10 Schematic diagram of the structure of the movable part in the present invention.

[0037] Figure 11 In the present invention Figure 10 Another perspective schematic diagram.

[0038] Figure 12 In the present invention Figure 8 B-B sectional view.

[0039] Figure 13 In the present invention Figure 6 Enlarged schematic diagram at position C.

[0040] Figure 14 In the present invention Figure 7 Enlarged schematic diagram at position D.

[0041] Figure 15 In the present invention Figure 9 Enlarged schematic diagram at position E.

[0042] In the figure: 1 - bottom case, 2 - charging coil, 3 - tempered glass disc, 4 - mobile phone holder, 5 - chassis assembly, 6 - vehicle holder, 7 - outer housing, 8 - air outlet holder, 9 - trapezoidal shell, 10 - trapezoidal block;

[0043] 11 - housing, 12 - claw, 13 - power socket;

[0044] 41 - movable part, 42 - first gear, 43 - second gear, 44 - clamping arm;

[0045] 411 - Mobile phone holder, 412 - First rack, 413 - Second rack, 414 - Inner middle plate, 415 - Telescopic spring, 416 - Guide rod;

[0046] 441 - Arm, 442 - Arc-shaped tooth part, 443 - Pushing spring, 444 - T-shaped column;

[0047] 51 - Chassis shell, 52 - Shrinkage groove, 53 - Card slot, 54 - Guide frame, 55 - End plate, 56 - Fixed column, 57 - Through groove;

[0048] 61 - Fixed disk, 62 - U-shaped seat, 63 - Connecting piece, 64 - L-shaped connecting frame, 65 - Movable disk, 66 - Adjusting spring, 67 - Pushing rod, 68 - Inner support piece. Detailed implementation mode

[0049] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0050] Please refer to Figures 1 to 9 , in the embodiment of the present invention, a multi-purpose wireless charging device includes a bottom shell 1. A cavity for installing a charging coil 2 is opened on one side of the bottom shell 1. A charging coil 2 for wireless charging is wound inside the charging coil 2, and a tempered glass disk 3 is arranged outside the charging coil 2; the tempered glass disk 3 is adhesively fixed to the bottom shell 1;

[0051] The bottom shell 1 is snap-fitted on the chassis assembly 5, and a mobile phone clamping member 4 for facilitating mobile phone fixation is arranged between the bottom shell 1 and the chassis assembly 5;

[0052] A vehicle-mounted clamping member 6 is arranged at the bottom of the chassis assembly 5, and a housing 7 is arranged outside the vehicle-mounted clamping member 6, and a trapezoidal clamping block 10 is integrally arranged on the outside of the housing 7; the trapezoidal clamping block 10 is snap-fitted with a trapezoidal clamping shell 9 on the outside, and an air outlet clamping member 8 is fixed on the outside of the trapezoidal clamping shell 9. Specific embodiment one:

[0054] During daily use, remove the air outlet clamping member 8, so that the vehicle-mounted clamping member 6 squats on the desktop, connect the power cord to the power socket 13, and then place the mobile phone on the tempered glass disk 3. Based on the electromagnetic induction phenomenon, when an electric current passes through the charging coil 2, a magnetic field is generated. When the unpowered receiving coil is placed in this magnetic field, an induced electromotive force will be generated, and then an electric current will be generated to achieve charging. Specific embodiment two:

[0056] When used in a vehicle, the air outlet clip 8 is not installed. The entire charging device is placed into the cup holder in the middle of the center console or the vehicle ashtray box. After being placed, the vehicle clip 6 props outwards to achieve stable fixation of the entire device. Then, the mobile phone is placed on it, and stable charging of the mobile phone can be achieved during vehicle driving. Specific Embodiment Three:

[0058] When the device is used as a mobile phone holder, the air outlet clip 8 is snap-fitted and fixed to the trapezoidal block 10 through the trapezoidal shell 9; then the air outlet clip 8 is snap-fitted and fixed to the air outlet of the vehicle, thus realizing the installation of the device on the vehicle. Subsequently, the mobile phone is snap-fitted and fixed to the mobile phone clip 4, and the installation of the mobile phone is realized. Thus, the mobile phone can be used for navigation while charging.

[0059] Please refer to the appendix Figures 6 - 7 , in this embodiment, the bottom case 1 includes a housing 11, the housing 11 is arranged in a stepped shape, and a plurality of claw members 12 are annularly arranged at the bottom of the housing 11; a power socket 13 is arranged on one side of the housing 11, and the power socket 13 is electrically connected to the charging coil 2.

[0060] The chassis assembly 5 includes a chassis case 51, a slot 53 engaged with the claw members 12 is formed above the chassis case 51, and contraction slots 52 for facilitating the accommodation of the clamping arms 44 are formed on both sides of the chassis case 51; a guide frame 54 is also fixed inside the chassis case 51.

[0061] By adopting the above technical solution, the claw members 12 arranged at the bottom of the housing 11 are snap-fitted and fixed to the slots 53 on the chassis case 51, thus facilitating the snap-fitting and fixation of the chassis assembly 5 and the bottom case 1.

[0062] Please refer to the appendix Figures 6 - 15 , in this embodiment, the mobile phone clip 4 includes a movable member 41 slidably connected to the guide frame 54. One end of the movable member 41 is meshed with a first gear 42 and a second gear 43, and a clamping arm 44 is cooperatively installed on the outside of each of the first gear 42 and the second gear 43.

[0063] Specifically, the movable member 41 includes a mobile phone support 411. A first rack 412 and a second rack 413 are arranged on one side of the mobile phone support 411. The first rack 412 and the second rack 413 are arranged in a vertically staggered manner, and the tooth profiles of the first rack 412 and the second rack 413 face in opposite directions;

[0064] The first rack 412 is meshed with the second gear 43; the second rack 413 is meshed with the first gear 42;

[0065] The second gear 43 is installed in a through groove 57 formed in a guide frame 54 through a rotating shaft; the first gear 42 is rotatably connected to a fixed column 56.

[0066] By adopting the above technical solution, when clamping the mobile phone, first press the lower end of the mobile phone against the movable member 41. When the movable member 41 extends, the first rack 412 and the second gear 43 are used to drive the two clamping arms 44 to deflect outwards. When the clamping arms 44 extend out of the contraction groove 52, the two sides of the mobile phone can be clamped, thus ensuring the stability of the mobile phone.

[0067] As a further description of the above embodiment, the clamping arm 44 includes a support arm 441, and the support arm 441 is movably connected to one end of the contraction groove 52 through a rotating shaft; an arc-shaped tooth member 442 is provided at one end of the support arm 441, and a cavity is formed at the other end of the support arm 441, and a top spring 443 is provided in the cavity; above the top spring 443, there is a T-shaped column 444;

[0068] Specifically, an inner middle plate 414 is provided between the first rack 412 and the second rack 413. A guide rod 416 is fixed between the first rack 412, the second rack 413, the inner middle plate 414 and the mobile phone support 411, and a telescopic spring 415 is sleeved on the guide rod 416;

[0069] One end of the telescopic spring 415 abuts against the inner middle plate 414, and the other end abuts against the inner side of the end plate 55; the end plate 55 is fixed to the guide frame 54.

[0070] By adopting the above technical solution, when the mobile phone presses down the mobile phone support 411, the pressed mobile phone support 411 drives the first rack 412 and the second rack 413 to slide down along the guide frame 54. The first rack 412 and the second rack 413 respectively drive the second gear 43 and the first gear 42 to rotate, so that the two clamping arms 44 expand outwards. While the clamping arms 44 expand, the top spring 443 pushes out the T-shaped column 444, and the pushed-out T-shaped column 444 can stop the two sides of the mobile phone to prevent the mobile phone from tilting.

[0071] The telescopic spring 415 adjusts according to its own elasticity, so that the T-shaped column 444 on the clamping arm 44 clamps the mobile phone, thus ensuring the stability of the mobile phone.

[0072] After removing the mobile phone, the telescopic spring 415 pushes the inner middle plate 414, causing the first rack 412 and the second rack 413 to reset. At the same time of resetting, the clamping arm 44 deflects inward. Since one side of the upper end of the T-shaped column 444 has an arc surface facing the contraction groove 52, when the T-shaped column 444 contacts the side of the bottom case 1, the T-shaped column 444 will compress and push the spring 443, causing the T-shaped column 444 to contract into the cavity of the groove, so that the clamping arm 44 contracts into the contraction groove 52.

[0073] Please refer to the attached Figure 5 , in this embodiment, the vehicle-mounted clamping member 6 includes a fixed disk 61, and a movable disk 65 is provided below the fixed disk 61. A plurality of U-shaped seats 62 are annularly arranged around the bottom of the fixed disk 61. Each U-shaped seat 62 is movably connected to a connecting piece 63 and an L-shaped connecting frame 64 through a rotating shaft. Among them, the connecting piece 63 and the L-shaped connecting frame 64 are also movably connected to the inner support member 68 through a rotating shaft; the movable disk 65 is movably connected to the L-shaped connecting frame 64 through a rotating shaft;

[0074] An adjustment spring 66 is also provided between the fixed disk 61 and the movable disk 65; a pushing rod 67 is fixed to the bottom of the movable disk 65; a plurality of groove-shaped openings for the inner support member 68 to protrude are formed around the outer shell 7.

[0075] By adopting the above technical solution, when the entire charging device is placed into the cup holder or the vehicle-mounted ashtray box in the middle of the central armrest, the pushing rod 67 first contacts the bottom of the cup holder, and the device is manually pressed down. The pushing rod 67 pushes the movable disk 65 upward and compresses the adjustment spring 66. With the cooperation of the connecting piece 63 and the L-shaped connecting frame 64, the inner support member 68 contracts inward;

[0076] When the entire vehicle-mounted clamping member 6 and the outer shell 7 enter the cup holder, the adjustment spring 66 pushes the fixed disk 61 upward according to its own elasticity. At the same time, with the cooperation of the connecting piece 63 and the L-shaped connecting frame 64, the inner support member 68 slightly expands outward, so as to be fixed in the cup holder, ensuring the fixation of the vehicle-mounted clamping member 6 and preventing it from falling off during vehicle driving.

[0077] The working principle is: during daily use, remove the air outlet clamping member 8, place the vehicle-mounted clamping member 6 on the table, connect the power cord to the power socket 13, and then place the mobile phone on the tempered glass disk 3. Based on the electromagnetic induction phenomenon, when an electric current passes through the charging coil 2, a magnetic field is generated. When the unpowered receiving coil is placed in this magnetic field, an induced electromotive force will be generated, and then an electric current will be generated to achieve charging;

[0078] When used in a vehicle, the air outlet clip 8 is not installed. The entire charging device is placed into the cup holder in the middle of the center console or the vehicle ashtray box. The ejector rod 67 first contacts the bottom of the cup holder, and the device is manually pressed down. The ejector rod 67 pushes the movable disk 65 upward and compresses the adjustment spring 66. With the cooperation of the connecting piece 63 and the L-shaped connecting frame 64, the inner support piece 68 contracts inward;

[0079] When the entire vehicle clip 6 and the outer shell 7 enter the cup holder, the adjustment spring 66 pushes the fixed disk 61 upward according to its own elasticity. At the same time, with the cooperation of the connecting piece 63 and the L-shaped connecting frame 64, the inner support piece 68 slightly expands outward, so as to be fixed in the cup holder, ensuring the fixation of the vehicle clip 6 and preventing it from falling off during vehicle driving;

[0080] Then place the mobile phone on it. When the mobile phone presses down the mobile phone support 411, the pressed mobile phone support 411 drives the first rack 412 and the second rack 413 to slide downward along the guide frame 54. The first rack 412 and the second rack 413 respectively drive the second gear 43 and the first gear 42 to rotate, so that the two clamping arms 44 expand outward. While the clamping arms 44 expand, the ejector spring 443 ejects the T-shaped column 444. The ejected T-shaped column 444 can stop the two sides of the mobile phone to prevent the mobile phone from tilting.

[0081] The telescopic spring 415 adjusts according to its own elasticity, so that the T-shaped column 444 on the clamping arm 44 clamps the mobile phone, thus ensuring the stability of the mobile phone.

[0082] After the mobile phone is removed, the telescopic spring 415 pushes the inner middle plate 414, so that the first rack 412 and the second rack 413 are reset. At the same time of resetting, the clamping arms 44 deflect inward; since one side of the upper end of the T-shaped column 444 has an arc surface, and this arc surface faces the contraction groove 52. When the T-shaped column 444 contacts the side of the bottom shell 1, the T-shaped column 444 will compress the ejector spring 443, so that the T-shaped column 444 contracts into the cavity of the groove, so that the clamping arms 44 contract into the contraction groove 52.

[0083] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0084] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-purpose wireless charging device, characterized in that: It includes a bottom shell (1). A cavity for installing a charging coil (2) is provided on one side of the bottom shell (1). A charging coil (2) for wireless charging is disposed within the charging coil (2), and a tempered glass disc (3) is provided outside the charging coil (2); the tempered glass disc (3) is adhesively fixed to the bottom shell (1). The bottom shell (1) is snap-fitted onto a chassis assembly (5), and a mobile phone clamping member (4) for facilitating the fixing of a mobile phone is provided between the bottom shell (1) and the chassis assembly (5). A vehicle-mounted clamping member (6) is provided at the bottom of the chassis assembly (5), and a housing body (7) is provided outside the vehicle-mounted clamping member (6). A trapezoidal clamping block (10) is integrally provided on the outside of the housing body (7); the outside of the trapezoidal clamping block (10) is snap-fitted with a trapezoidal clamping shell (9), and an air outlet clamping member (8) is fixed to the outside of the trapezoidal clamping shell (9).

2. The multi-purpose wireless charging device according to claim 1, characterized in that: The bottom shell (1) includes a housing body (11). The housing body (11) is arranged in a stepped shape, and a plurality of clamping claws (12) are annularly provided at the bottom of the housing body (11); a power socket (13) is provided on one side of the housing body (11), and the power socket (13) is electrically connected to the charging coil (2).

3. The multi-purpose wireless charging device according to claim 1, wherein: The chassis assembly (5) includes a chassis shell (51). A card slot (53) for snap-fitting with the clamping claws (12) is provided above the chassis shell (51), and contraction slots (52) for facilitating the accommodation of the clamping arms (44) are provided on both sides of the chassis shell (51); a guiding frame (54) is further fixed inside the chassis shell (51).

4. The multi-purpose wireless charging device according to claim 1, characterized in that: The mobile phone clamping member (4) includes a movable member (41) slidably connected to the guiding frame (54). One end of the movable member (41) is meshed with a first gear (42) and a second gear (43), and a clamping arm (44) is cooperatively installed outside each of the first gear (42) and the second gear (43).

5. The multi-purpose wireless charging device according to claim 4, characterized in that: The movable member (41) includes a mobile phone support member (411). A first rack (412) and a second rack (413) are provided on one side of the mobile phone support member (411). The first rack (412) and the second rack (413) are arranged in an up-and-down staggered manner, and the tooth profiles of the first rack (412) and the second rack (413) face in opposite directions. The first rack (412) is meshed with the second gear (43); the second rack (413) is meshed with the first gear (42). The second gear (43) is installed on a through slot (57) provided on the guiding frame (54) through a rotating shaft; the first gear (42) is rotatably connected to a fixed column (56).

6. The multi-purpose wireless charging device according to claim 4, characterized in that: The clamping arm (44) includes a support arm (441). The support arm (441) is movably connected to one end of the contraction slot (52) through a rotating shaft; an arc-shaped tooth member (442) is provided at one end of the support arm (441), and a cavity is provided at the other end of the support arm (441), and a pushing spring (443) is provided in the cavity; a T-shaped column (444) is provided above the pushing spring (443). One side of the upper end of the T-shaped column (444) has an arc-shaped surface, and the arc-shaped surface faces the contraction slot (52).

7. The multi-purpose wireless charging device according to claim 5, wherein: An inner middle plate (414) is provided between the first rack (412) and the second rack (413). A guide rod (416) is fixed between the first rack (412), the second rack (413), the inner middle plate (414) and the mobile phone holder (411), and a telescopic spring (415) is sleeved on the guide rod (416). One end of the telescopic spring (415) abuts against the inner middle plate (414), and the other end abuts against the inner side of the end plate (55). The end plate (55) is fixed to the guide frame (54).

8. The multi-purpose wireless charging device according to claim 1, characterized in that: The vehicle-mounted clamping member (6) includes a fixed disk (61). A movable disk (65) is provided below the fixed disk (61). A plurality of U-shaped seats (62) are annularly and arrayed around the bottom of the fixed disk (61). Each U-shaped seat (62) is movably connected to a connecting piece (63) and an L-shaped connecting frame (64) through a rotating shaft. The connecting piece (63) and the L-shaped connecting frame (64) are also movably connected to an inner support member (68) through a rotating shaft. The movable disk (65) is movably connected to the L-shaped connecting frame (64) through a rotating shaft. An adjustment spring (66) is further provided between the fixed disk (61) and the movable disk (65). A jacking rod (67) is fixed to the bottom of the movable disk (65).

9. The multi-purpose wireless charging device according to claim 1, characterized in that: A plurality of groove-shaped openings for the inner support member (68) to protrude are formed around the outer shell (7).

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