Wireless charger

Abstract

The utility model discloses a wireless charger. The wireless charger comprises a housing, a charging coil and a magnetic member. Wherein the shell comprises a bearing part used for bearing a to-be-charged device, and the charging coil is used for wirelessly supplying power to the to-be-charged device borne on the bearing part. The magnetic part is configured to be driven by a to-be-charged device so as to move relative to the charging coil, and the charging coil can respond to the movement of the magnetic part so as to generate an induction signal. Specifically, when the magnetic piece moves relative to the charging coil, the magnetic flux of the charging coil changes so as to generate an induction current, and a processor connected with the charging coil can generate an induction signal after obtaining the induction current so as to induce that the bearing part bears the to-be-charged device, thereby facilitating the subsequent charging action. According to the scheme, the to-be-charged device can be sensed only by adding the magnetic part without adding any other electrical element, so that on one hand, the sensing is more accurate, and on the other hand, the material cost is relatively low.

Description

Technical Field

[0001] The utility model relates to the field of wireless charging, in particular to a wireless charger. Background Art

[0002] The wireless charger includes a charging coil for generating a changing magnetic field. The receiving coil of the device to be charged generates an induced current after acquiring the changing magnetic field, thereby enabling the device to be charged remotely. In the related art, when the device to be charged is carried on the wireless charger, an induction component needs to be set in order to identify the device to be charged. The existing induction components are relatively expensive, and the recognition accuracy of some types of induction components is relatively poor. Utility Model Content

[0003] The main purpose of the utility model is to provide a wireless charger, which can accurately sense a device to be charged and reduce the material cost of the wireless charger.

[0004] To achieve the above object, the utility model provides a wireless charger, comprising:

[0005] The housing comprises a carrying portion, wherein the carrying portion is suitable for carrying a device to be charged;

[0006] A charging coil, disposed in the housing, the charging coil being suitable for wirelessly charging the device to be charged;

[0007] a magnetic member, movably connected to the housing, wherein the magnetic member is configured to be driven by the device to be charged to move relative to the charging coil when the device to be charged is carried on the carrying portion;

[0008] The charging coil responds to the movement of the magnetic member and generates an induction signal.

[0009] In some embodiments, the wireless charger includes a linkage member, the linkage member is slidably connected to the shell and is disposed through the shell, the linkage member includes a first end portion located inside the shell and a second end portion located outside the shell;

[0010] The magnetic member is disposed in the shell and connected to the first end portion, and the linkage member is configured so that the second end portion can be driven by the device to be charged when the device to be charged is carried on the carrying portion, thereby driving the magnetic member to move relative to the charging coil.

[0011] In some embodiments, a limiting groove is provided on a side of the first end facing the charging coil, and the magnetic member is embedded in the limiting groove.

[0012] In some embodiments, the linkage member passes through the shell in a direction perpendicular to the axis of the charging coil, the bearing portion includes an inclined bearing surface, the second end portion is located below the bearing surface, so that the second end portion is suitable for supporting the device to be charged carried on the bearing surface, and the linkage member is configured to be displaced downward relative to the bearing portion due to the gravity of the device to be charged.

[0013] In some embodiments, the wireless charger further includes a positioning component, the positioning component is connected to the housing, and the positioning component is used to position the device to be charged to fix the relative position of the device to be charged and the carrying portion;

[0014] The positioning assembly includes a first clamping arm, a second clamping arm and the linkage member; when the linkage member is displaced downward by the gravity of the device to be charged, the linkage member drives the first clamping arm and the second clamping arm to move toward each other, so that the first clamping arm and the second clamping arm are suitable for jointly clamping the lateral sides of the device to be charged.

[0015] In some embodiments, the linkage member is passed through the carrying portion along a direction parallel to the axis of the charging coil, so that the second end portion is pressed against and driven to move when the device to be charged is placed on the carrying portion, thereby driving the magnetic member to move in a direction parallel to the axis of the charging coil.

[0016] In some embodiments, the shell includes a shell body and the bearing portion, the shell body defines a accommodating cavity for accommodating the charging coil, the linkage member is passed through the shell body, the bearing portion is connected to the second end, and the bearing portion is configured to be able to push the linkage member into the shell body under the gravity of the device to be charged.

[0017] In some embodiments, a guide tube is disposed inside the housing, the magnetic member is disposed inside the guide tube, and the magnetic member is configured to be able to move in the guide tube toward or away from the bearing portion;

[0018] The magnetic member is configured to attract the device to be charged when the carrying portion carries the device to be charged, so as to move toward a direction close to the carrying portion.

[0019] In some embodiments, the wireless charger further comprises a driving component, the driving component is connected to the charging coil, and the driving component is configured to drive the charging coil to move relative to the carrying portion;

[0020] Before charging the device to be charged, the charging coil is located at a reset position relative to the carrying portion. When the charging coil is at the reset position, the magnetic member is located on the inner side of the outer peripheral edge of the charging coil when observed along the axial direction of the charging coil.

[0021] In some embodiments, the driving assembly includes a driving part and a transmission part connected to the driving part, the transmission part includes a support seat, the support seat is connected to the charging coil, the wireless charger also includes a guide rail, the axis of the guide rail is parallel to the first direction, the support seat includes a first slider slidably connected to the guide rail, and the driving part drives the support seat to reciprocate along the first direction on the guide rail;

[0022] The transmission part further comprises a screw, the axis of the screw is parallel to the first direction, the support seat comprises a second slider sleeved on the screw, the second slider has an internal thread matched with the screw, and the driving part is configured to drive the screw to rotate around its own axis so as to drive the second slider to reciprocate along the first direction;

[0023] The wireless charger comprises two guide rails arranged opposite to each other along the second direction, and the support seat comprises two first sliders, and the two first sliders are slidably connected to the two guide rails in a one-to-one correspondence;

[0024] The support seat further includes a support plate, the two first sliding blocks are connected to one side of the support plate along the first direction, and the second sliding block is connected to the other side of the support plate along the first direction;

[0025] The screw rod is located at one side of the two guide rails along the first direction, and along the second direction, the screw rod is located between the two guide rails.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] In the technical solution of the utility model, the wireless charger includes a shell, a charging coil and a magnetic part. Among them, the shell includes a bearing part for carrying the device to be charged, and the charging coil is used to wirelessly power the device to be charged carried on the bearing part. The magnetic part is configured to be driven by the device to be charged so as to move relative to the charging coil when the device to be charged is carried on the bearing part, and the charging coil can respond to the movement of the magnetic part to generate an induction signal. Specifically, when the magnetic part moves relative to the charging coil, the magnetic flux of the charging coil changes to generate an induced current. After the processor connected to the charging coil obtains the induced current, it can generate a sensing signal, that is, it senses that the bearing part has carried the device to be charged, thereby facilitating subsequent charging actions. In this solution, only a magnetic part is added, and the induction of the device to be charged can be realized without adding any other electrical components. On the one hand, the induction is more accurate, and on the other hand, the material cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 It is a cross-sectional schematic diagram of a wireless charger in the first embodiment of the utility model;

[0030] Figure 2 It is a cross-sectional schematic diagram of a wireless charger in the second embodiment of the utility model;

[0031] Figure 3 It is a cross-sectional schematic diagram of a wireless charger in the third embodiment of the utility model;

[0032] Figure 4 This is a three-dimensional schematic diagram of a wireless charger in a fourth embodiment of the present utility model;

[0033] Figure 5 This is a first exploded schematic diagram of a wireless charger in a fourth embodiment of the present utility model;

[0034] Figure 6 It is an exploded schematic diagram of a driving assembly and a charging coil assembly in a fourth embodiment of the utility model;

[0035] Figure 7 It is a cross-sectional schematic diagram of a wireless charger in a fourth embodiment of the present utility model;

[0036] Figure 8 This is a second exploded schematic diagram of the wireless charger in the first embodiment of the utility model.

[0037] Description of Figure Numbers:

[0038] Wireless charger 10;

[0039] Shell 100; bearing portion 110; bearing surface 111; shell body 120; guide tube 121;

[0040] Charging coil 200;

[0041] Driving assembly 300; driving part 310; transmission part 320; first gear 321; second gear 322; screw 323; support seat 324; support plate 3241; first slider 3242; second slider 3243;

[0042] Magnetic member 400;

[0043] Guide rail 500;

[0044] Positioning assembly 600; linkage member 610; first end 611; second end 612; limiting groove 613; first clamping arm 620; second clamping arm 630;

[0045] First direction X;

[0046] The second direction Y;

[0047] The third direction Z.

[0048] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] Before wireless charging the device to be charged, the wireless charger needs to determine whether the device to be charged is in a suitable position. In the related art, some solutions use infrared sensors to determine whether the device to be charged is in a suitable position, and some solutions use NFC (near field communication) with the device to be charged to determine whether the device to be charged is in a suitable position. In the above solutions, a special sensor component is required to sense the position of the device to be charged, and the cost of the sensor component is relatively high.

[0051] In view of this, see Figure 1-Figure 8, this embodiment provides a wireless charger 10, which includes a housing 100, a charging coil 200 and a magnetic part 400. The housing 100 includes a bearing portion 110 for bearing a device to be charged. The device to be charged may be a mobile phone, a watch, a tablet or a computer, or other electronic devices capable of wireless charging. For ease of description, the device to be charged is taken as an example of a mobile phone. The mobile phone can be placed on the bearing portion 110 when wirelessly charging. In some embodiments, the bearing portion 110 may only be used to support the mobile phone, and the mobile phone can be placed at any position on the bearing portion 110. In other embodiments, in addition to supporting the mobile phone, the bearing portion 110 may also be used to locate the relative position of the mobile phone therewith. For example, a groove may be provided on the bearing portion 110, and the mobile phone can be embedded in the groove, so that when the bearing portion 110 carries the mobile phone, the relative position of the mobile phone and the bearing portion 110 is fixed (or the mobile phone can only move within a small range relative to the bearing portion 110), and thus the relative position of the power receiving coil of the mobile phone and the wireless charger 10 is fixed. See. Figure 4-Figure 8 In this embodiment, the carrying portion 110 is in the shape of a flat plate and is only used to support a mobile phone.

[0052] The charging coil 200 is disposed in the housing 100, and the charging coil 200 is suitable for wireless charging of the device to be charged. Specifically, the charging coil 200 can generate a changing magnetic field after being energized, and the receiving coil of the mobile phone generates an induced current after obtaining the changing magnetic field, thereby realizing wireless charging of the mobile phone. When the charging coil 200 is wirelessly charged, it is necessary to match the position of the receiving coil of the mobile phone. In the direction parallel to the axis of the charging coil 200 (i.e., the third direction Z), the larger the overlapping area of ​​the charging coil 200 and the receiving coil, the higher the charging power and charging efficiency. Therefore, when the charging coil 200 starts charging, it is necessary to maximize the overlapping area of ​​the charging coil 200 and the receiving coil in the direction parallel to the axis of the charging coil 200, thereby improving the charging power and charging efficiency.

[0053] The charging coil 200 can be fixed relative to the housing 100 or can be movable relative to the housing 100. When the charging coil 200 can be movable relative to the housing 100, the charging coil 200 can be moved according to the position of the device to be charged, so that the charging coil 200 matches the position of the power receiving coil of the device to be charged, thereby maximizing the overlapping area of ​​the two, thereby improving the charging power and charging efficiency. The scheme in which the charging coil 200 can be moved relative to the housing 100 is described in detail below.

[0054] See also Figure 1-Figure 4In this embodiment, the magnetic member 400 is movably connected to the housing 100 and can move relative to the housing 100. The magnetic member 400 can be directly movably connected to the housing 100 or indirectly movably connected to the housing 100. The magnetic member 400 can move along a straight line or a curve relative to the housing 100 or can rotate along a straight line or a curve relative to the housing 100. For ease of description, see Figure 1-Figure 2 In this embodiment, the magnetic member 400 is indirectly movably connected to the housing 100, and the magnetic member 400 is translated along a straight line relative to the housing 100 for illustration. The magnetic member 400 is configured to be driven by the device to be charged during the process of the device to be charged being carried on the carrying portion 110 so as to move relative to the charging coil 200. In other words, the movement of the magnetic member 400 is driven by the device to be charged, and is driven by the device to be charged during the process of the device to be charged being carried on the carrying portion 110. Specifically, the magnetic member 400 may be moved by the gravity of the device to be charged. The magnetic member 400 may be driven directly by the device to be charged, or indirectly by the device to be charged. In this embodiment, the magnetic member 400 is indirectly driven by the device to be charged, that is, the device to be charged presses the intermediate component during the process of being carried on the carrying portion 110, and then the intermediate component drives the magnetic member 400 to move relative to the charging coil 200.

[0055] When the magnetic part 400 moves relative to the charging coil 200, the charging coil 200 responds to the movement of the magnetic part 400 and generates an induction signal. Specifically, when the magnetic part 400 moves relative to the charging coil 200, the magnetic flux of the charging coil 200 changes, thereby generating an induced current. After the processor connected to the charging coil 200 obtains the induced current, it can generate a sensing signal, that is, it senses that the carrying part 110 has carried the device to be charged, thereby facilitating subsequent charging actions. In this solution, only the magnetic part 400 is added, and no other electrical components need to be added to realize the sensing of the device to be charged. Compared with adding an infrared sensor module or an NFC module to sense the device to be charged, the solution using the magnetic part 400 can make the sensing more accurate on the one hand, and will not lose the sensing effect due to the infrared sensor being blocked by dust or foreign objects, nor will it be unable to sense the position of the mobile phone because the mobile phone has not turned on NFC; on the other hand, the material cost is lower.

[0056] When the charging coil 200 generates an induction signal, it can be used to indicate that the device to be charged has been placed on the carrying portion 110. In the subsequent actions, in one embodiment, the wireless charger 10 can immediately start wireless charging; in another embodiment, the wireless charger 10 can first adjust the position of the charging coil 200 so that the position of the charging coil 200 matches the position of the receiving coil of the device to be charged before wireless charging, thereby improving the charging efficiency. In this embodiment, the charging coil 200 can move relative to the housing 100. Specifically, see Figure 4-Figure 6A driving component 300 is provided in the shell 100. The driving component 300 is connected to the charging coil 200. The driving component 300 is used to drive the charging coil 200 to move relative to the bearing portion. The driving component 300 can drive the charging coil 200 to move to a position matching the position of the receiving coil, thereby increasing the overlapping area between the charging coil 200 and the receiving coil to improve the charging efficiency.

[0057] In order to improve the sensing accuracy, the magnetic member 400 needs to be located closer to the charging coil 200, so that when the magnetic member 400 moves relative to the charging coil 200, the magnetic flux in the charging coil 200 changes greatly, thereby improving the sensing accuracy. When the charging coil 200 moves relative to the carrier 110, the position of the charging coil 200 is uncertain, so the position of the charging coil 200 relative to the magnetic member 400 is uncertain. In order to ensure that the magnetic member 400 is located closer to the charging coil 200 before each charging starts, in some embodiments, after each charging of the charging coil 200 is completed, it is reset to the reset position, so that before charging the device to be charged, the charging coil 200 is located at the reset position relative to the carrier 110. Therefore, before each charging starts, the relative position of the magnetic member 400 and the charging coil 200 is fixed. In some embodiments, see Figure 7 When the charging coil 200 is in the reset position, the magnetic member 400 is located on the inner side of the outer peripheral edge of the charging coil 200 when viewed along the axis direction of the charging coil 200. In this solution, when the magnetic member 400 moves relative to the charging coil 200, the magnetic flux of the charging coil 200 changes more, so that the induced current of the charging coil 200 is larger, thereby making the sensing more sensitive.

[0058] The charging coil 200 can move relative to the carrier 110 in a variety of ways. Figure 4-Figure 6In some embodiments, the driving assembly 300 includes a driving part 310 and a transmission part 320 connected to the driving part 310. The transmission part 320 includes a support seat 324, and the support seat 324 is connected to the charging coil 200. The wireless charger 10 also includes a guide rail 500, the axis of the guide rail 500 is parallel to the first direction X, the support seat 324 includes a first slider 3242 slidably connected to the guide rail 500, and the driving part 310 drives the support seat 324 to reciprocate along the first direction X on the guide rail 500. Through the sliding cooperation between the guide rail 500 and the first slider 3242, the movement of the support seat 324 can be smoother. In some embodiments, the two ends of the guide rail 500 may be connected to fixed protrusions. In this case, the fixed protrusions at the two ends of the guide rail 500 are not only used to fix the guide rail 500, but also used to limit the movement range of the first slider 3242. When the first slider 3242 moves along the first direction X to abut against one of the fixed protrusions, the support seat 324 moves to one of the end positions within its movement range. When the first slider 3242 moves in the reverse direction of the first direction X to abut against another fixed protrusion, the support seat 324 moves to the other end position within its movement range. In addition, in this embodiment, when the first slider 3242 moves to abut against one of the fixed protrusions, the position of the charging coil 200 is the reset position.

[0059] See also Figure 5-Figure 6 In some embodiments, the wireless charger 10 includes two guide rails 500 arranged relatively along the second direction Y, and the support base 324 includes two first sliders 3242. The two first sliders 3242 are slidably connected to the two guide rails 500 in a one-to-one correspondence. The axes of the two guide rails 500 are parallel to the first direction X, and the two guide rails 500 are relatively distributed at intervals along the second direction Y. By providing two guide rails 500, the guidance of the support base 324 is more stable.

[0060] See also Figure 5-Figure 6 In some embodiments, the transmission part 320 also includes a screw 323, the axis of the screw 323 is parallel to the first direction X, and the support seat 324 includes a second slider 3243 sleeved on the screw 323, and the second slider 3243 has an internal thread that cooperates with the screw 323. The screw 323 is inserted into the second slider 3243, and bearings are provided at both ends of the screw 323. When the driving part 310 drives the screw 323 to rotate, the second slider 3243 is driven by the screw 323 to reciprocate along the axis direction of the screw 323 (i.e., the first direction X), so that the support seat 324 as a whole reciprocates along the first direction X, and then the charging coil 200 reciprocates along the first direction X. In this embodiment, the screw 323 is used to drive the support seat 324, and the driving stability and driving accuracy are higher. In order to further improve the driving accuracy, refer to Figure 6In some embodiments, the driving unit 310 may include a driving motor, a first gear 321 and a second gear 322. The driving motor may be a stepping motor, so that the driving accuracy is higher. The first gear 321 is connected to the output shaft of the stepping motor, the second gear 322 is connected to the end of the screw 323, and the first gear 321 is meshed with the second gear 322. During the driving process, the stepping motor drives the first gear 321 to rotate, the first gear 321 drives the second gear 322 to rotate, the second gear 322 drives the screw 323 to rotate, and the screw 323 drives the support seat 324 to translate along the first direction X. Specifically, the number of teeth of the first gear 321 is less than the number of teeth of the second gear 322, so that the rotation speed of the screw 323 is less than the rotation speed of the stepping motor, thereby improving the driving accuracy.

[0061] See also Figure 5-Figure 6 , the support seat 324 also includes a support plate 3241, two first sliders 3242 are connected to one side of the support plate 3241 along the first direction X, and the two first sliders 3242 are correspondingly connected to the two sides of the support plate 3241 along the second direction Y. The second slider 3243 is connected to the other side of the support plate 3241 along the first direction X (i.e., the side opposite to the two first sliders 3242). In this solution, the support seat 324 forms a three-point positioning, and the transmission is more stable compared to the structure in which the screw rod 323 is arranged on the side of the two guide rails 500. The screw rod 323 is located on one side of the two guide rails 500 along the first direction X, and along the second direction Y, the screw rod 323 is located between the two guide rails 500. In other words, in this embodiment, when observed along the first direction X, the screw 323 is located between the two guide rails 500, and in this embodiment, when observed along the second direction Y, the screw 323 is located on one side of the two guide rails 500. In this solution, the distance between the second slider 3243 and the two first sliders 3242 along the first direction X is longer, so that the positioning of the support seat 324 is more stable.

[0062] The charging coil 200 translates along the first direction X to achieve position matching with the receiving coil. When the receiving coil deviates from the charging coil 200 along the second direction Y, the matching degree between the charging coil 200 and the receiving coil is not ideal no matter where the charging coil 200 moves along the first direction X. In view of this, see Figure 5In some embodiments, the support base 324 further includes a support plate 3241, and the charging coil 200 is disposed on a side of the support plate 3241 facing the carrier 110. The guide rail 500, the first slider 3242, the screw 323, the second slider 3243 and the driving unit 310 are all disposed on a side of the support plate 3241 away from the carrier 110. In this solution, since the charging coil 200 and the guide rail 500, the first slider 3242, the screw 323, the second slider 3243 and the drive unit 310 are distributed on different sides of the support plate 3241, the guide rail 500, the first slider 3242, the screw 323, the second slider 3243 and the drive unit 310 will not occupy the space of the charging coil 200 along the second direction Y, and the size of the charging coil 200 along the second direction Y can be maximized. Therefore, when the mobile phone is placed on the carrier 110 in a deviated manner along the second direction Y, the overlapping area between the charging coil 200 and the power receiving coil of the mobile phone can also be maximized, thereby improving the charging power and charging efficiency. Further, the size of the charging coil 200 along the second direction Y can be substantially equal to the size of the inner cavity of the housing 100 along the second direction Y. For example, along the second direction Y, the distance between the two sides of the charging coil 200 and the inner wall of the housing 100 can be less than or equal to two millimeters.

[0063] In some embodiments, the magnetic member 400 is indirectly movably connected to the housing 100, see Figure 1 as well as Figure 7-Figure 8 Specifically, the wireless charger 10 includes a linkage member 610, which is slidably connected to the housing 100 and is disposed in the housing 100. The linkage member 610 includes a first end 611 located in the housing 100 and a second end 612 located outside the housing 100. The magnetic member 400 is disposed in the housing 100 and connected to the first end 611. The linkage member 610 is configured such that the second end 612 can be driven by the device to be charged during the process of the device to be charged being carried on the carrying portion 110, thereby driving the magnetic member 400 to move relative to the charging coil 200. In this solution, the second end 612 extends out of the housing 100 to be driven by the device to be charged. Compared with the solution in which the magnetic member 400 extends out of the housing 100 and is driven by the device to be charged, on the one hand, the volume of the magnetic member 400 is smaller than the housing 100, thereby reducing the cost of the magnetic member 400; on the other hand, it prevents the exposed magnetic member 400 from absorbing metal foreign matter in the environment, thereby causing debris to accumulate on the wireless charger 10.

[0064] The magnetic member 400 can be connected to the first end 611 in any form, see Figure 7-Figure 8In some embodiments, a limiting groove 613 is provided on the side of the first end portion 611 facing the charging coil 200, and the magnetic member 400 is embedded in the limiting groove 613. Specifically, the magnetic member 400 can be embedded in the limiting groove 613 by interference fit or by gluing. Since the opening of the limiting groove 613 faces the charging coil 200, the position of the magnetic member 400 and the charging coil 200 is closer, and the sensing sensitivity of the charging coil 200 can be further characterized.

[0065] The linkage member 610 can be disposed in any position of the housing 100 through the housing 100. Figure 1 In some embodiments, the linkage member 610 is provided in the bearing portion 110 in a direction parallel to the axis of the charging coil 200, so that the second end portion 612 is pressed and driven to move when the device to be charged is placed on the bearing portion 110, thereby driving the magnetic member 400 to move in a direction parallel to the axis of the charging coil 200. In this solution, since the linkage member 610 is provided in the bearing portion 110, on the one hand, it is easier to press the linkage member 610 when the device to be charged is placed on the bearing portion 110, and on the other hand, the user does not need to align the position of the linkage member 610 when placing the device to be charged on the bearing portion 110, which facilitates the user's operation. The linkage member 610 can be passed through at any position of the bearing portion 110. In some embodiments, the linkage member 610 is passed through at the center of the bearing portion 110. This solution can further improve the user's convenience of operation, and it is easier to press the linkage member 610 when the device to be charged is placed on the bearing portion 110.

[0066] See also Figure 4-Figure 8In other embodiments, the linkage member 610 passes through the housing 100 in a direction perpendicular to the axis of the charging coil 200. Specifically, the bearing portion 110 includes an inclined bearing surface 111, and the second end portion 612 is located below the bearing surface 111, so that the second end portion 612 is suitable for supporting the device to be charged carried on the bearing surface 111, and the linkage member 610 is configured to be displaced downward relative to the bearing portion 110 due to the gravity of the device to be charged. In this solution, when the device to be charged is carried on the bearing portion 110, it has a tendency to slide downward relative to the bearing portion 110. When the device to be charged slides downward, it is supported by the second end portion 612 of the linkage member 610, thereby pushing the linkage member to slide in the direction of extending out of the housing 100, thereby driving the magnetic member 400 to move. In this solution, on the one hand, the linkage member 610 is more easily driven by the device to be charged, and there will be no problem that the device to be charged is offset from the linkage member 610 after being carried on the carrying portion 110, thereby making it impossible for the linkage member 610 to drive the magnetic member 400 to move; on the other hand, after the device to be charged is carried on the carrying portion 110, its display screen can be arranged at an angle, so that when the user is in a sitting position, for example, when the user is in an office state or a driving state, the user can easily observe the information displayed on the display screen.

[0067] See also Figure 5-Figure 6 In some embodiments, the wireless charger 10 further includes a positioning component 600, which is connected to the housing 100 and is used to position the device to be charged so as to fix the relative position between the device to be charged and the carrying portion 110. In this solution, after the mobile phone is carried on the carrying portion 110, the position of the mobile phone is fixed by a fixing device, and after the position of the mobile phone is fixed, the position of the mobile phone and the carrying portion 110 is fixed. In other words, the addition of the positioning component 600 enables the position of the mobile phone to be relatively fixed with the carrying portion 110 each time the wireless charging is performed. After the position of the mobile phone and the carrying portion 110 is fixed, the position of the power receiving coil of different models of mobile phones changes within a smaller range, which can facilitate the position design of the reset position on the one hand, and shorten the moving distance of the charging coil 200 during the charging preparation process on the other hand. In order to realize the positioning of the mobile phone, in some embodiments, the positioning component 600 can be an annular flange connected to the carrying portion 110, and the mobile phone can be embedded in the annular flange when it is positioned on the carrying portion 110 to achieve the position fixation with the carrying portion 110. In other embodiments, the positioning component 600 may include a magnet, and the magnet fixes the mobile phone by adsorbing a magnetic component on the mobile phone.

[0068] See also Figure 7-Figure 8In some embodiments, the positioning assembly 600 includes a linkage 610, a first clamping arm 620, and a second clamping arm 630. The linkage 610 is suitable for supporting the device to be charged. The portion of the linkage 610 used for supporting the device to be charged is located outside the housing 100, and the end of the linkage 610 opposite to the portion used for supporting the device to be charged extends into the housing 100. The linkage 610 is connected to the lower end of the housing 100, and its upper end is inserted into the housing 100. The linkage 610 is configured to be displaced downward relative to the bearing portion 110 by the gravity of the device to be charged, and a portion of the upper end of the linkage 610 gradually extends out of the housing 100 when the linkage 610 moves downward. In the process of the upper end of the linkage 610 extending out of the housing 100, the first clamping arm 620 and the second clamping arm 630 are driven to move in directions toward each other, so that the first clamping arm 620 and the second clamping arm 630 are suitable for jointly clamping the lateral sides of the device to be charged. After the positioning assembly 600 positions the mobile phone, the linkage 610 can position the bottom of the mobile phone, the first clamping arm 620 and the second clamping arm 630 position the lateral sides of the mobile phone, and the bearing portion 110 positions the back plate of the mobile phone. In this embodiment, the three sides of the mobile phone are all positioned, and the user does not need to adjust the positioning direction during the positioning process, the positioning process is simpler, and the positioning accuracy is higher. In this embodiment, the wireless charger 10 can be a car charging bracket with a wireless charging function.

[0069] In the above-mentioned embodiment, the position of the bearing portion 110 is fixed, and the linkage member 610 moves relative to the bearing portion 110 during the process of driving the magnetic member 400 to move. Figure 2 In some embodiments, the position of the bearing part 110 may not be fixed, and the bearing part 110 moves with the movement of the linkage part 610, and the linkage part 610 and the bearing part 110 move simultaneously. Specifically, the housing 100 includes a housing body 120 and a bearing part 110, and the housing body 120 defines a housing cavity for accommodating the charging coil 200. The linkage part 610 is arranged in the housing body 120, the bearing part 110 is connected to the second end 612, and the bearing part 110 is configured to be able to be pushed by the gravity of the device to be charged to extend into the housing body 120. In this solution, the bearing part 110 and the magnetic part 400 are respectively connected to two opposite ends of the linkage part 610. When the device to be charged is carried on the bearing part 110, the device to be charged pushes the bearing part 110 downward due to the gravity, thereby driving the linkage part 610 to move in the direction of extending into the housing body 120, and then driving the magnetic part 400 to move relative to the charging coil 200. In this solution, there is no need to pay attention to the position of the linkage member 610 when the device to be charged is carried on the carrying portion 110 , so driving the linkage member 610 is more convenient and more accurate.

[0070] See also Figure 3In some embodiments, the wireless charger 10 may not be provided with the linkage member 610. In this solution, the wireless charger 10 mainly identifies the device to be charged that has a magnetic component (such as iron or other metal components that can be attracted by the magnetic component 400). Specifically, a guide tube 121 is provided on the inner side of the shell 100, and the magnetic component 400 is provided in the guide tube 121. The magnetic component 400 is configured to be able to move in the guide tube 121 in a direction close to or away from the bearing portion 110. Further, the magnetic body can be a spherical magnetic bead, and the diameter of the internal channel of the guide tube 121 is slightly larger than the diameter of the magnetic bead, so that the magnetic bead can only translate in the guide tube 121 in a direction perpendicular to the bearing surface 111. The magnetic component 400 is configured to attract the device to be charged when the bearing portion 110 carries the device to be charged, thereby moving in a direction close to the bearing portion 110. In this solution, when the device to be charged having a magnetic attraction component is carried on the carrying portion 110, the magnetic member 400 attracts the magnetic attraction component and moves upward, and the charging coil 200 generates an induction signal during the upward movement of the magnetic member 400. When the device to be charged is separated from the carrying portion 110 after charging is completed, the magnetic member 400 moves downward due to gravity, and the charging coil 200 generates an induction signal again at this time, which can indicate the end of charging.

[0071] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0072] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0073] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A wireless charger, characterized in that: include: The housing comprises a carrying portion, wherein the carrying portion is suitable for carrying a device to be charged; A charging coil, disposed in the housing, the charging coil being suitable for wirelessly charging the device to be charged; a magnetic member, movably connected to the housing, wherein the magnetic member is configured to be driven by the device to be charged to move relative to the charging coil when the device to be charged is carried on the carrying portion; The charging coil responds to the movement of the magnetic member and generates an induction signal.

2. The wireless charger according to claim 1, characterized in that: The wireless charger includes a linkage member, the linkage member is slidably connected to the shell and is disposed through the shell, the linkage member includes a first end portion located inside the shell and a second end portion located outside the shell; The magnetic member is disposed in the shell and connected to the first end portion, and the linkage member is configured so that the second end portion can be driven by the device to be charged when the device to be charged is carried on the carrying portion, thereby driving the magnetic member to move relative to the charging coil.

3. The wireless charger according to claim 2, characterized in that: A limiting groove is provided on a side of the first end facing the charging coil, and the magnetic member is embedded in the limiting groove.

4. The wireless charger according to claim 2, wherein: The linkage member passes through the shell in a direction perpendicular to the axis of the charging coil, the bearing portion includes an inclined bearing surface, the second end portion is located below the bearing surface, so that the second end portion is suitable for supporting the device to be charged carried on the bearing surface, and the linkage member is configured to be displaced downward relative to the bearing portion due to the gravity of the device to be charged.

5. The wireless charger according to claim 4, characterized in that: The wireless charger further includes a positioning component, the positioning component is connected to the housing, and the positioning component is used to position the device to be charged to fix the relative position of the device to be charged and the bearing portion; The positioning assembly includes a first clamping arm, a second clamping arm and the linkage member; when the linkage member is displaced downward by the gravity of the device to be charged, the linkage member drives the first clamping arm and the second clamping arm to move toward each other, so that the first clamping arm and the second clamping arm are suitable for jointly clamping the lateral sides of the device to be charged.

6. The wireless charger according to claim 2, characterized in that: The linkage member is passed through the bearing portion along a direction parallel to the axis of the charging coil, so that the second end portion is pressed against and driven to move when the device to be charged is placed on the bearing portion, thereby driving the magnetic member to move along a direction parallel to the axis of the charging coil.

7. The wireless charger according to claim 2, characterized in that: The shell includes a shell body and the bearing part, the shell body defines a accommodating cavity for accommodating the charging coil, the linkage member is passed through the shell body, the bearing part is connected to the second end, and the bearing part is configured to be able to push the linkage member into the shell body under the gravity of the device to be charged.

8. The wireless charger according to claim 1, wherein: A guide tube is provided inside the shell, the magnetic member is provided inside the guide tube, and the magnetic member is configured to be able to move in the guide tube toward or away from the bearing portion; The magnetic member is configured to attract the device to be charged when the carrying portion carries the device to be charged, so as to move toward a direction close to the carrying portion.

9. The wireless charger according to claim 1, wherein: The wireless charger further includes a driving component, the driving component is connected to the charging coil, and the driving component is configured to drive the charging coil to move relative to the carrying portion; Before charging the device to be charged, the charging coil is located at a reset position relative to the carrying portion. When the charging coil is at the reset position, the magnetic member is located on the inner side of the outer peripheral edge of the charging coil when observed along the axial direction of the charging coil.

10. The wireless charger according to claim 9, characterized in that: The driving assembly includes a driving part and a transmission part connected to the driving part, the transmission part includes a support seat, the support seat is connected to the charging coil, the wireless charger also includes a guide rail, the axis of the guide rail is parallel to the first direction, the support seat includes a first slider slidably connected to the guide rail, and the driving part drives the support seat to reciprocate along the first direction on the guide rail; The transmission part further comprises a screw, the axis of the screw is parallel to the first direction, the support seat comprises a second slider sleeved on the screw, the second slider has an internal thread matched with the screw, and the driving part is configured to drive the screw to rotate around its own axis so as to drive the second slider to reciprocate along the first direction; The wireless charger comprises two guide rails arranged opposite to each other along the second direction, and the support seat comprises two first sliders, and the two first sliders are slidably connected to the two guide rails in a one-to-one correspondence; The support seat further includes a support plate, the two first sliding blocks are connected to one side of the support plate along the first direction, and the second sliding block is connected to the other side of the support plate along the first direction; The screw rod is located at one side of the two guide rails along the first direction, and along the second direction, the screw rod is located between the two guide rails.

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