Driving motor, camera module and electronic device

Abstract

Embodiments of the present application provide a driving motor, a camera module and an electronic device, wherein the driving motor comprises a frame, a lifting support, a lens support, a first magnetic piece, a first coil, a second magnetic piece, a second coil and a first circuit board; the lifting support is slidingly fitted with the frame along a first direction; the lens support is slidingly fitted with the lifting support along a direction perpendicular to the first direction; the first magnetic piece and the second magnetic piece are both arranged on the frame; the first coil and the second coil are both arranged on the lens support; the first magnetic piece is opposite to the first coil along a second direction; the second magnetic piece is opposite to the second coil along a third direction; the second direction and the third direction are both perpendicular to the first direction, and the second direction intersects with the third direction; the first circuit board is fixed relative to the frame; and the first coil and the second coil are both connected with the first circuit board.

Description

Technical Field

[0001] This invention relates to the field of driver technology, and more particularly to a drive motor, a camera module, and an electronic device. Background Technology

[0002] The drive motor of the camera module is used to drive the lens movement, thereby achieving image stabilization. In related technologies, the coil of the drive motor is set in the frame, and the magnetic component is set in the lens bracket. The coil is used to connect to an external circuit. When the coil is energized, the coil and the magnetic component cooperate to drive the lens bracket to move relative to the frame.

[0003] The magnetic component of the drive motor, which works in conjunction with the coil to drive the lens bracket, is mounted on the lens bracket. This magnetic component moves synchronously with the lens bracket, making the surrounding magnetic field more complex and potentially adversely affecting nearby components. For example, some electronic devices require at least two camera modules. When the camera modules are close together, the magnetic component moving synchronously with the lens bracket can affect the magnetic field of the coils of adjacent drive motors, thus negatively impacting those motors. Summary of the Invention

[0004] This invention provides a drive motor, a camera module, and an electronic device to solve the problem of the influence of magnetic components moving with the lens bracket on the surrounding magnetic field during the operation of the drive motor.

[0005] To solve the above-mentioned technical problems, the present invention is implemented as follows: In a first aspect, embodiments of the present invention provide a drive motor.

[0006] The drive motor provided in this embodiment of the invention includes: a frame, a lifting bracket, a lens bracket, a first magnetic element, a first coil, a second magnetic element, a second coil, and a first circuit board; the lifting bracket is slidably engaged with the frame along a first direction; the lens bracket is slidably engaged with the lifting bracket along a direction perpendicular to the first direction; the first magnetic element and the second magnetic element are both disposed in the frame, the first coil and the second coil are both disposed in the lens bracket, the first magnetic element and the first coil are opposite each other along a second direction, and the second magnetic element and the second coil are opposite each other along a third direction, wherein the second direction and the third direction are both perpendicular to the first direction, and the second direction intersects the third direction; the first circuit board is fixed relative to the frame, and the first coil and the second coil are both connected to the first circuit board.

[0007] Secondly, embodiments of the present invention provide a camera module.

[0008] The camera module provided in this embodiment of the invention includes: a lens and any one of the drive motors provided in this embodiment of the invention, wherein the lens is mounted on a lens bracket.

[0009] Thirdly, embodiments of the present invention provide an electronic device.

[0010] The electronic device provided in this embodiment of the invention includes: a frame and any one of the camera modules provided in this embodiment of the invention.

[0011] The above-described at least one technical solution adopted in the embodiments of the present invention can achieve the following beneficial effects: In an embodiment of the present invention, both the first magnetic element and the second magnetic element are disposed on the frame, and both the first coil and the second coil are disposed on the lens bracket. In this way, the first coil and the second coil are disposed on the movable lens bracket, while the first magnetic element and the second magnetic element are disposed on the fixedly disposed frame.

[0012] Therefore, during the operation of the drive motor, the first and second magnetic components, which cooperate with the first and second coils, do not move, thus preventing the generation of a changing magnetic field around them. Furthermore, compared to related technologies, this eliminates the interference of the first and second magnetic components, which move with the lens bracket, on the surrounding magnetic field during the drive motor's movement.

[0013] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of a camera module equipped with a drive motor, provided in an embodiment of the present invention; Figure 2 for Figure 1 An exploded view of the camera module shown in the image; Figure 3 An exploded view of a drive motor provided in an embodiment of the present invention; Figure 4 A schematic diagram of the magnetic components and coil layout of a drive motor provided in an embodiment of the present invention; Figure 5 A schematic diagram of a drive motor with a concealed housing provided for an embodiment of the present invention; Figure 6 In order to be in Figure 5Based on the drive motor shown in the diagram, a schematic diagram further conceals the frame, the first magnetic component, and the second magnetic component; Figure 7 for Figure 6 An exploded view of some components of the drive motor is shown in the figure; Figure 8 for Figure 7 An exploded view of the bottom of some components of the drive motor shown in the figure; Figure 9 A schematic diagram of a lens holder, a first coil, and a second coil provided for an embodiment of the present invention; Figure 10 A schematic diagram of a second circuit board, a first coil, and a second coil provided for an embodiment of the present invention; Figure 11 for Figure 10 The front view of the second circuit board, the first coil, and the second coil shown in the figure; Figure 12 for Figure 10 A schematic diagram of the second circuit board, the first coil, and the second coil from a bottom view, shown in the figure; Figure 13 An exploded view of another drive motor provided in an embodiment of the present invention; Figure 14 A schematic diagram of another arrangement of magnetic components and coils in a drive motor provided by an embodiment of the present invention; Figure 15 for Figure 13 The diagram shows the first coil, second coil, third coil, first circuit board, and second circuit board of the drive motor. Figure 16 for Figure 15 A schematic diagram from the bottom view of the first coil, second coil, third coil, first circuit board, and second circuit board shown in the figure. Figure 17 An exploded view of another drive motor provided in an embodiment of the present invention; Figure 18 for Figure 17 The diagram shows the lifting bracket, connector, first coil, second coil, third coil, and first circuit board of the drive motor. Figure 19 for Figure 18 The diagram shows the bottom of the lifting bracket, connector, first coil, second coil, third coil, and first circuit board.

[0016] Explanation of reference numerals in the attached figures: 1-Camera module; 10 - Drive motor; 110 - Frame; 110a - Groove; 110b - First receiving hole; 110c - Second receiving hole; 111 - First sliding groove; 112 - Third conductive part; 120 - Housing; 210 - Lifting bracket; 211 - Second slide rail; 212 - Fourth conductive part; 213 - Third slide rail; 214 - Third conductive component; 220 - Lens bracket; 221 - First electrical connector; 221a - First pad; 222 - Second electrical connector; 222a - Second pad; 223 - Sixth groove; 224 - First receiving groove; 225 - Second receiving groove; 230 - Connector; 240 - Sliding fit; 241 - Fourth slide groove; 242 - Fifth slide groove; 310 - First magnetic component; 320 - First coil; 330 - Second magnetic component; 340 - Second coil; 350 - Third magnetic component; 360-Third coil; 370 - Magnetic steel sheet; 410 - First Circuit Board; 420 - Second circuit board; 420a - Main body; 420b - Flexible deformation part; 420c - Bending part; 421 - First conductive part; 422 - Second conductive part; 510 - First ball bearing; 520 - Second ball bearing; 530 - Third ball bearing; 20-lens. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0019] Furthermore, although the terminology used in this invention is selected from commonly known and used terms, some terms mentioned in this specification may have been selected by the inventor in his or her judgment, and their detailed meanings are explained in the relevant sections of the description herein.

[0020] Furthermore, the invention should be understood not only through the actual terminology used, but also through the meaning implied by each term.

[0021] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] This invention provides a drive motor. Exemplarily, the drive motor can be applied to a camera module. For example, the drive motor can be used to drive the movement of the lens of the camera module. It is understood that the drive motor can also be applied to other devices besides camera modules, and can drive the movement of other devices similar to lenses; these will not be elaborated upon here.

[0023] refer to Figures 1 to 19 The drive motor 10 provided in this embodiment of the invention includes: a frame 110, a lifting bracket 210, a lens bracket 220, a first magnetic component 310, a first coil 320, a second magnetic component 330, a second coil 340, and a first circuit board 410.

[0024] The lifting bracket 210 slides in engagement with the frame 110 along a first direction. The lens bracket 220 slides in engagement with the lifting bracket 210 along a direction perpendicular to the first direction. For example, the first direction is vertical, the lens bracket 220 is supported by the lifting bracket 210, and the lens bracket 220 can slide horizontally relative to the lifting bracket 210 when driven. For example, the vertical direction is the Z-axis direction in a Cartesian coordinate system, and the horizontal direction includes the X-axis and Y-axis directions in a Cartesian coordinate system. When driven, the lens bracket 220 can slide relative to the lifting bracket 210 along the X-axis and Y-axis directions.

[0025] Furthermore, the first magnetic element 310 and the second magnetic element 330 are both disposed on the frame 110, and the first coil 320 and the second coil 340 are both disposed on the lens bracket 220. The first magnetic element 310 and the first coil 320 are opposite each other along a second direction, and the second magnetic element 330 and the second coil 340 are opposite each other along a third direction. Both the second direction and the third direction are perpendicular to the first direction, and the second direction intersects with the third direction.

[0026] Thus, the first coil 320 engages with the first magnetic element 310 to drive the lens holder 220 to move relative to the frame 110 along a second direction. The second coil 340 engages with the second magnetic element 330 to drive the lens holder 220 to move relative to the frame 110 along a third direction. For example, the third direction is the X-axis direction in the Cartesian coordinate system exemplified above, and the second direction is the Y-axis direction in the Cartesian coordinate system exemplified above.

[0027] It should be noted that the Cartesian coordinate system exemplified above is merely an example provided to facilitate a quick understanding of the solutions provided in the embodiments of the present invention by those skilled in the art. In other embodiments, the first direction is not necessarily vertical, and the second and third directions are not necessarily perpendicular. For example, the angle between the second and third directions can be 30 degrees, 45 degrees, 60 degrees, or 75 degrees, etc., which will not be listed here. Of course, it is understood that when the first, second, and third directions are perpendicular to each other, it is convenient to determine the movement direction and displacement of the lens support 220 based on the Cartesian coordinate system.

[0028] The first circuit board 410 is fixed relative to the frame 110, and the first coil 320 and the second coil 340 are both connected to the first circuit board 410. For example, the first circuit board 410 is used to connect to a power source, and the power source supplies power to the first coil 320 and the second coil 340 through the first circuit board 410 to drive the lens bracket 220 to move relative to the frame 110 in a direction perpendicular to the first direction.

[0029] In this manner, in the embodiments of the present invention, the first magnetic element 310 and the second magnetic element 330 are both disposed on the frame 110, and the first coil 320 and the second coil 340 are both disposed on the lens bracket 220. Thus, the first coil 320 and the second coil 340 are disposed on the movable lens bracket 220, while the first magnetic element 310 and the second magnetic element 330 are disposed on the fixedly disposed frame 110.

[0030] Therefore, during the operation of the drive motor 10, the first magnetic element 310 and the second magnetic element 330, which cooperate with the first coil 320 and the second coil 340, will not move, thus preventing the generation of a changing magnetic field around the first magnetic element 310 and the second magnetic element 330. Furthermore, compared with related technologies, the interference of the first magnetic element and the second magnetic element of the drive motor, which move with the lens bracket, on the surrounding magnetic field during movement is eliminated.

[0031] refer to Figure 3 and Figure 5 In some embodiments, the drive motor 10 further includes a second circuit board 420, which is electrically connected to the first circuit board 410. (See reference...) Figures 6 to 12The second circuit board 420 includes a main body 420a, which is fixed relative to the lifting bracket 210.

[0032] For example, the drive motor 10 also includes a connector 230, which is connected to the lifting bracket 210; the main body 420a is disposed on the connector 230 so that the main body 420a is fixed relative to the lifting bracket 210. Alternatively, the main body 420a can be attached to the bottom surface of a groove in the lifting bracket 210, which also allows the main body 420a to be fixed relative to the lifting bracket 210.

[0033] Furthermore, the main body portion 420a is provided with a first conductive portion 421 and a second conductive portion 422. Exemplarily, the first conductive portion 421 is a first metal layer exposure portion on the surface of the main body portion 420a of the second circuit board 420. The second conductive portion 422 is a second metal layer exposure portion on the surface of the main body portion 420a of the second circuit board 420. Exemplarily, the first and second metal layer exposure portions can be made of a metal material with good conductivity, such as copper or silver.

[0034] Both the first conductive portion 421 and the second conductive portion 422 are perpendicular to the first direction. For example, with... Figure 11 Taking the shown orientation as an example, the lower surface of the first conductive part 421 is a first rectangular plane, and the lower surface of the second conductive part 422 is a second rectangular plane. The first direction is the vertical direction, the first rectangular plane is parallel to the horizontal plane and thus perpendicular to the vertical direction, and the second rectangular plane is parallel to the horizontal plane and thus perpendicular to the vertical direction.

[0035] refer to Figures 9 to 12 The lens bracket 220 is provided with a first electrical connector 221 and a second electrical connector 222. The first coil 320 is connected to the first electrical connector 221, and the first electrical connector 221 is in sliding or rolling contact with the first conductive part 421. The second coil 340 is connected to the second electrical connector 222, and the second electrical connector 222 is in sliding or rolling contact with the second conductive part 422.

[0036] Thus, taking the first direction as the vertical direction as an example, during the horizontal sliding process of the first electrical connector 221 and the second electrical connector 222 relative to the main body 420a and the main body 420a of the second circuit board 420 along with the lens bracket 220, the first electrical connector 221 slides or rolls in contact with the first conductive part 421 of the second circuit board 420, and always remains in an electrical connection state, and the second electrical connector 222 slides or rolls in contact with the second conductive part 422 of the second circuit board 420, and always remains in an electrical connection state.

[0037] Thus, as the first electrical connector 221 and the second electrical connector 222 slide relative to the main body 420a and the main body 420a of the second circuit board 420 as the lens bracket 220 slides, the first coil 320 is always electrically connected to the second circuit board 420 via the first electrical connector 221, and the second coil 340 is always electrically connected to the second circuit board 420 via the second electrical connector 222.

[0038] Furthermore, since the second circuit board 420 is electrically connected to the first circuit board 410, the first coil 320 and the second coil 340 can be electrically connected to the first circuit board 410 via the second circuit board 420. Thus, power can be supplied to the first coil 320 and the second coil 340 via the first circuit board 410 and the second circuit board 420, respectively.

[0039] refer to Figure 3 In some embodiments, the frame 110 is provided with a first receiving hole 110b and a second receiving hole 110c. The first receiving hole 110b is used to receive a first magnetic element 310, and the second receiving hole 110c is used to receive a second magnetic element 330. Exemplarily, the first magnetic element 310 is a first magnet, and the second magnetic element 330 is a second magnet.

[0040] refer to Figure 6 , Figures 9 to 12 In some embodiments, the lens holder 220 is provided with a first receiving groove 224 and a second receiving groove 225. The first receiving groove 224 is used to receive the first coil 320, and the second receiving groove 225 is used to receive the second coil 340.

[0041] Furthermore, the first electrical connector 221 includes a first pad 221a located at the bottom of the first receiving groove 224, and the first pad 221a is used to connect with the first coil 320. The second electrical connector 222 includes a second pad 222a located at the bottom of the second receiving groove 225, and the second pad 222a is used to connect with the second coil 340.

[0042] In some embodiments, the first coil 320 is used to connect to the positive and negative circuits of the second circuit board 420, respectively. There are two first electrical connectors 221, and correspondingly, there are also two first conductive parts 421. The first electrical connectors 221 are connected to the first conductive parts 421 in a one-to-one correspondence. One first electrical connector 221 is used to connect to the positive terminal of the first coil 320, and the other first electrical connector 221 is used to connect to the negative terminal of the first coil 320. It should be noted that the number of first electrical connectors 221 and the number of first conductive parts 421 can be flexibly set according to requirements, and will not be listed here.

[0043] Similarly, in some implementations, the second coil 340 is used to connect to the positive and negative circuits of the second circuit board 420, respectively. There are two second electrical connectors 222, and correspondingly, there are also two second conductive parts 422. The second electrical connectors 222 are connected to the second conductive parts 422 in a one-to-one correspondence. One second electrical connector 222 is used to connect to the positive connection point of the second coil 340, and the other second electrical connector 222 is used to connect to the negative connection point of the second coil 340. It should be noted that the number of second electrical connectors 222 and the number of second conductive parts 422 can be flexibly set according to requirements, and will not be listed here.

[0044] Optionally, the top surface of the lens holder 220 is provided with a first receiving hole. The first electrical connector 221 includes a first spring and a fourth ball bearing, which are disposed in the first receiving hole, with the top of the fourth ball bearing protruding from the top surface of the lens holder 220. The first spring is connected to the first coil 320. The bottom of the fourth ball bearing abuts against the first spring, and the top of the fourth ball bearing makes rolling contact with the first conductive part 421 of the second circuit board 420. The first coil 320 is electrically connected to the first conductive part 421 of the second circuit board 420 via the first spring and the fourth ball bearing.

[0045] Similarly, the top surface of the lens holder 220 is provided with a second receiving hole. The second electrical connector 222 includes a second spring and a fifth ball bearing. The second spring and the fifth ball bearing are disposed in the second receiving hole, and the top of the fifth ball bearing protrudes from the top surface of the lens holder 220. The second spring is connected to the second coil 340. The bottom of the fifth ball bearing abuts against the second spring, and the top of the fifth ball bearing makes rolling contact with the second conductive part 422 of the second circuit board 420. The second coil 340 is electrically connected to the second conductive part 422 of the second circuit board 420 via the second spring and the fifth ball bearing.

[0046] refer to Figures 3 to 8 In some embodiments, the drive motor 10 further includes a connector 230. The connector 230 is connected to the lifting bracket 210, the lens bracket 220 is disposed between the connector 230 and the lifting bracket 210, and the main body 420a is disposed on the side of the connector 230 facing the lens bracket 220.

[0047] by Figure 7 Taking the orientation shown as an example, the lower surface of the connector 230 faces the lens bracket 220 located below the connector 230, and the main body 420a of the second circuit board 420 is provided on the lower surface of the connector 230. Furthermore, this causes the first conductive part 421 and the second conductive part 422 to also face the lens bracket 220. This facilitates the first electrical connector 221 and the second electrical connector 222 provided on the lens bracket 220 to make conductive contact with the first conductive part 421 and the second conductive part 422, respectively.

[0048] refer to Figure 11 and Figure 12 In some embodiments, the first electrical connector 221 is a first spring contact, and the second electrical connector 222 is a second spring contact. The first electrical connector 221 elastically abuts against the first conductive portion 421 of the second circuit board 420 along a first direction, and the second electrical connector 222 elastically abuts against the second conductive portion 422 of the second circuit board 420 along the first direction.

[0049] In this way, by having the first electrical connector 221 elastically abut against the first conductive portion 421 of the second circuit board 420 along the first direction, the reliability of the electrical connection between the first electrical connector 221 and the first conductive portion 421 of the second circuit board 420 can be improved, preventing separation and thus an open circuit in the electrical connection line. Similarly, by having the second electrical connector 222 elastically abut against the second conductive portion 422 of the second circuit board 420 along the first direction, the reliability of the electrical connection between the second electrical connector 222 and the second conductive portion 422 of the second circuit board 420 can be improved, preventing separation and thus an open circuit in the electrical connection line.

[0050] Furthermore, when the lens bracket 220 is supported on the lifting bracket 210, by means of the first electrical connector 221 elastically abutting against the first conductive part 421 of the second circuit board 420 along the first direction, and the second electrical connector 222 elastically abutting against the second conductive part 422 of the second circuit board 420 along the first direction, a preload force toward the support part of the lifting bracket 210 can be applied to the lens bracket 220 to avoid a gap of movement between the lens bracket 220 and the lifting bracket 210 along the first direction.

[0051] refer to Figure 3 , Figure 5 and Figure 7 In some embodiments, the first circuit board 410 is disposed on the outer wall of the frame 110. The second circuit board 420 further includes a flexible deformable portion 420b, which is located on the side of the connector 230 away from the lens bracket 220, and is connected to the first circuit board 410.

[0052] by Figure 6 Taking the shown orientation as an example, the connector 230 is located above the lens bracket 220 and is fixedly connected to the lens bracket 220. The lower surface of the connector 230 faces the lens bracket 220. The main body 420a of the second circuit board 420 is attached to the lower surface of the connector 230. A bending portion 420c is provided on one side of the main body 420a, which connects the main body 420a located below the connector 230 and the flexible deformable portion 420b located above the connector 230.

[0053] Furthermore, combined with Figure 5The end of the flexible deformable part 420b is connected to the first circuit board 410. During the movement of the lens bracket 220 relative to the frame 110 along the first direction with the lifting bracket 210, the main body part 420a provided on the connector 230 moves synchronously with the lens bracket 220. The end of the flexible deformable part 420b connected to the first circuit board 410 is fixed relative to the frame 110, and the part of the flexible deformable part 420b located between the first circuit board 410 and the main body part 420a deforms adaptively.

[0054] In some embodiments, the first circuit board 410 is a first flexible circuit board. The second circuit board 420 is a second flexible circuit board. Exemplarily, the first flexible circuit board is bonded to the outer wall of the frame 110, the main body 420a of the second circuit board 420 is bonded to the side of the connector 230 away from the lens bracket 220, and the other parts of the second circuit board 420 are suspended and not directly connected to other rigid components, thereby forming a flexible deformation part 420b and a bending part 420c. Furthermore, the flexible deformation part 420b is connected to the first circuit board 410, and during the movement of the lens bracket 220 relative to the frame 110 along the first direction with the lifting bracket 210, the flexible deformation part 420b adaptively deforms.

[0055] refer to Figures 3 to 8 In some embodiments, the frame 110 is provided with a groove 110a. The lifting bracket 210, the sliding mating member 240, the lens bracket 220, and the connector 230 are arranged sequentially and are all located within the groove 110a. The connector 230 is connected to the lifting bracket 210 and "clamps" the sliding mating member 240 and the lens bracket 220 along a first direction to prevent the sliding mating member 240 and the lens bracket 220 from accidentally separating from the lifting bracket 210.

[0056] The frame 110 is provided with a first slide groove 111 extending along a first direction, and the lifting bracket 210 is provided with a second slide groove 211 extending along the first direction. The second slide groove 211 is opposite to the first slide groove 111, and a first ball bearing 510 is sandwiched between the second slide groove 211 and the first slide groove 111. In this way, the first ball bearing 510 can be used to make the lifting bracket 210 slide relatively smoothly relative to the frame 110 along the first direction.

[0057] The lifting bracket 210 is provided with a third slide groove 213 extending along the second direction, and the sliding mating member 240 is provided with a fourth slide groove 241 extending along the second direction. The fourth slide groove 241 is opposite to the third slide groove 213, and a second ball bearing 520 is sandwiched between the fourth slide groove 241 and the third slide groove 213. In this way, the second ball bearing 520 can be used to make the sliding mating member 240 slide relatively smoothly relative to the lifting bracket 210 along the second direction.

[0058] The sliding mating member 240 is provided with a fifth sliding groove 242 extending in a third direction, and the lens bracket 220 is provided with a sixth sliding groove 223 extending in a third direction. The sixth sliding groove 223 is opposite to the fifth sliding groove 242, and a third ball bearing 530 is sandwiched between the sixth sliding groove 223 and the fifth sliding groove 242. In this way, the third ball bearing 530 can be used to make the lens bracket 220 slide relatively smoothly relative to the sliding mating member 240 in a third direction.

[0059] In this way, by having the lens bracket 220 slide and engage with the sliding engagement member 240 along a third direction, and the sliding engagement member 240 slide and engage with the lifting bracket 210 along a second direction, the lens bracket 220 slides and engages with the lifting bracket 210 in a direction perpendicular to the first direction. This allows the lens bracket 220 to slide relative to the lifting bracket 210 in both the second and third directions, which are perpendicular to the first direction.

[0060] Of course, in other embodiments, for example, a sixth ball bearing is embedded in the bottom of the lifting bracket 210. The top of the sixth ball bearing protrudes from the upper surface of the bottom of the lifting bracket 210. The lens bracket 220 is supported on the top of the sixth ball bearing. In this way, the lens bracket 220 can also slide in a direction perpendicular to the first direction with the lifting bracket 210.

[0061] refer to Figure 2 and Figure 3 In some embodiments, the drive motor 10 further includes a housing 120. The housing 120 is used to connect to the frame 110. The housing 120 and the frame 110 form a cavity, and components such as the lifting bracket 210 and the lens bracket 220, as well as other parts, are disposed within the cavity, thereby providing safety protection for the electronic components and mechanical parts within the cavity.

[0062] It should be noted that, in order to improve the stability of the relative movement of the components, those skilled in the art can flexibly set the number of each groove and the number of each ball according to their needs, which will not be elaborated here.

[0063] In some embodiments, the lens bracket 220 can move relative to the frame 110 along a first direction with the lifting bracket 210, thereby enabling the camera module 1 equipped with the drive motor 10 to perform lens focusing. The lens bracket 220 can move relative to the frame 110 along a second direction and a third direction, respectively, thereby enabling the camera module 1 equipped with the drive motor 10 to perform lens stabilization.

[0064] refer to Figure 3 and Figure 4In some embodiments, the drive motor 10 further includes a third magnetic element 350 and a third coil 360. Exemplarily, the third magnetic element 350 is a third magnet. The third magnetic element 350 is disposed on the lifting bracket 210, and the third coil 360 is disposed on the frame 110. The third coil 360 is electrically connected to the first circuit board 410. The third coil 360 cooperates with the third magnetic element 350 to drive the lifting bracket 210 to move relative to the frame 110 in a first direction. Thus, since the third coil 360 is disposed on the frame 110, and the first circuit board 410 is also disposed on the frame 110, it is relatively convenient to electrically connect the third coil 360 to the first circuit board 410.

[0065] It should be noted that the reference is... Figure 4 During the operation of the drive motor 10, the first magnetic element 310 and the second magnetic element 330 are both located on the frame 110 and will not be opposite to the frame 110. Although the third magnetic element 350 will move relative to the frame 110, the solution provided by the embodiment of the present invention also makes the magnetic elements of two of the three motion axes of the drive motor 10 static magnetic elements. Compared with the solution in the related art where all three magnetic elements move, the interference magnetic field generated by the moving magnetic elements can be reduced.

[0066] Optionally, the third magnetic component 350 can also be fixed relative to the frame 110. See the following embodiment for a specific solution.

[0067] refer to Figures 13 to 16 or refer to Figures 17 to 19 In some embodiments, the drive motor 10 further includes a third magnetic element 350 and a third coil 360. The third magnetic element 350 is disposed on the frame 110, and the third coil 360 is disposed on the lifting bracket 210. The third coil 360 is used to cooperate with the third magnetic element 350 to drive the lifting bracket 210 to move relative to the frame 110 in a first direction.

[0068] In this way, by placing the third magnetic component 350 on the frame 110, the third magnetic component 350 is also fixed relative to the frame 110. This makes all three magnetic components in the three motion axes of the drive motor 10 static magnetic components. Compared with the related technology where all three magnetic components move, this avoids the phenomenon of interference magnetic fields generated by moving magnetic components.

[0069] refer to Figures 13 to 16In some embodiments, the frame 110 is provided with a first slide groove 111 extending along a first direction, and the lifting bracket 210 is provided with a second slide groove 211 extending along the first direction. The second slide groove 211 is opposite to the first slide groove 111, and a first ball bearing 510 is sandwiched between the second slide groove 211 and the first slide groove 111. The groove wall of the first slide groove 111 is provided with a third conductive part 112, and the groove wall of the second slide groove 211 is provided with a fourth conductive part 212. The third conductive part 112 is electrically connected to the fourth conductive part 212 via the first ball bearing 510. The third conductive part 112 is electrically connected to the first circuit board 410, and the third coil 360 is electrically connected to the fourth conductive part 212.

[0070] For example, the first ball bearing 510 is made of a metal material. Alternatively, the surface of the first ball bearing 510 is covered with a metal layer. This allows the third conductive part 112 to be electrically connected to the fourth conductive part 212 via the first ball bearing 510. In this way, the third coil 360 is electrically connected to the first circuit board 410 in sequence via the fourth conductive part 212, the first ball bearing 510, and the fourth conductive part 212.

[0071] In some embodiments, the lifting bracket 210 has a first circuit layer embedded within it, and the third coil 360 is connected to the pads of the first circuit layer. Exemplarily, the third coil 360 is soldered to the pads of the first circuit layer using solder ball soldering or resistance soldering. Alternatively, the third coil 360 is bonded to the pads of the first circuit layer using conductive silver paste.

[0072] A second circuit layer is embedded in the frame 110. The first circuit layer in the lifting bracket 210 is connected to the second circuit layer in the frame 110 via a first ball bearing 510. The second circuit layer is connected to the first circuit board 410. For example, the second circuit layer has a soldering portion. The soldering portion of the second circuit layer is soldered to the first circuit board 410 by solder ball soldering or resistance soldering. Alternatively, the soldering portion of the second circuit layer is bonded to the first circuit board 410 using conductive silver paste. This ensures that the second circuit layer is electrically connected to the first circuit board 410.

[0073] Furthermore, in some embodiments, the lifting bracket 210 is provided with a magnetic steel sheet 370. The magnetic steel sheet 370 is opposite to the third magnetic element 350, and the magnetic steel sheet 370 and the third magnetic element 350 attract each other, thereby pressing the first ball 510 between the first slide groove 111 and the second slide groove 211, thereby improving the electrical connection stability of the first ball 510 with the third conductive part 112 and the fourth conductive part 212 respectively.

[0074] refer to Figures 17 to 19In some embodiments, when the drive motor includes a second circuit board 420, which is electrically connected to the first circuit board 410, and the second circuit board 420 includes a main body 420a, which is fixed relative to the lifting bracket 210, the third coil 360 is connected to the main body 420a.

[0075] In this way, since the main body 420a of the second circuit board 420 is fixed relative to the lifting bracket 210, and the third coil 360 is disposed on the lifting bracket 210 and also relative to the lifting bracket 210, the third coil 360 can be electrically connected to the main body 420a of the second circuit board 420 using the conductors or connecting circuits on the lifting bracket 210. Furthermore, since the second circuit board 420 is electrically connected to the first circuit board 410, the third coil 360 can be electrically connected to the first circuit board 410 via the second circuit board 420.

[0076] In some embodiments, the lifting bracket 210 is provided with a third conductive element 214. The third conductive element 214 is electrically connected to the third coil 360 and the main body 420a of the second circuit board 420, respectively. This allows the third coil 360 to be electrically connected to the second circuit board 420 via the third conductive element 214.

[0077] It should be noted that the second circuit board 420 described here may be the same device as the second circuit board 420 described above. Therefore, the technical solutions related to the second circuit board 420 can be referred to above, and will not be repeated here.

[0078] In other embodiments, the third coil 360 may be electrically connected to the main body 420a of the second circuit board 420 first, and then electrically connected to the first circuit board 410 via the second circuit board 420.

[0079] For example, we can learn from Figures 13 to 16 The ball bearing conductive scheme in the design allows the third coil 360 to be electrically connected to the conductive spring on the lens bracket 220 via the conductive ball bearing between the lifting bracket 210 and the lens bracket 220. Furthermore, drawing on... Figures 3 to 12 The spring contact electrical connection scheme shown in the figure allows the conductive spring contact to be electrically connected to the main body 420a of the second circuit board 420. In this way, the third coil 360 can also be indirectly electrically connected to the first circuit board 410 via the second circuit board 420.

[0080] This invention provides a camera module. (See reference...) Figure 1 and Figure 2 The camera module 1 provided in this embodiment of the invention includes: a lens 20 and any type of drive motor 10 provided in this embodiment of the invention. The lens 20 is disposed on a lens bracket 220.

[0081] In some embodiments, the camera module 1 further includes a photosensitive chip. The photosensitive chip is fixed relative to the frame 110 and faces the lens 20, and is used to receive light transmitted through the lens 20.

[0082] This invention provides an electronic device. The electronic device includes a frame and any one of the camera modules 1 provided in this invention. When the electronic device is a mobile phone, the frame is the mobile phone's mid-frame.

[0083] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0084] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the embodiments of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drive motor, characterized in that, include: The frame (110), lifting bracket (210), lens bracket (220), first magnetic component (310), first coil (320), second magnetic component (330), second coil (340) and first circuit board (410); The lifting bracket (210) slides in cooperation with the frame (110) along the first direction; The lens bracket (220) and the lifting bracket (210) are slidably engaged in a direction perpendicular to the first direction. The first magnetic element (310) and the second magnetic element (330) are both disposed on the frame (110). The first coil (320) and the second coil (340) are both disposed on the lens bracket (220). The first magnetic element (310) and the first coil (320) are opposite to each other in a second direction. The second magnetic element (330) and the second coil (340) are opposite to each other in a third direction. The second direction and the third direction are both perpendicular to the first direction. The second direction intersects the third direction. The first circuit board (410) is fixed relative to the frame (110), and the first coil (320) and the second coil (340) are both connected to the first circuit board (410).

2. The drive motor according to claim 1, characterized in that, The drive motor also includes a second circuit board (420). The second circuit board (420) is electrically connected to the first circuit board (410). The second circuit board (420) includes a main body (420a), which is fixed relative to the lifting bracket (210). The main body (420a) is provided with a first conductive part (421) and a second conductive part (422). Both the first conductive part (421) and the second conductive part (422) are perpendicular to the first direction. The lens bracket (220) is provided with a first electrical connector (221) and a second electrical connector (222). The first coil (320) is connected to the first electrical connector (221), and the first electrical connector (221) is in sliding contact or rolling contact with the first conductive part (421). The second coil (340) is connected to the second electrical connector (222), and the second electrical connector (222) is in sliding contact or rolling contact with the second conductive part (422).

3. The drive motor according to claim 2, characterized in that, The drive motor also includes a connector (230), which is connected to the lifting bracket (210). The lens bracket (220) is located between the connector (230) and the lifting bracket (210). The main body (420a) is located on the side of the connector (230) facing the lens bracket (220).

4. The drive motor according to claim 3, characterized in that, The first electrical connector (221) is a first spring, and the second electrical connector (222) is a second spring. The first electrical connector (221) elastically abuts against the first conductive part (421) along the first direction, and the second electrical connector (222) elastically abuts against the second conductive part (422) along the first direction.

5. The drive motor according to claim 1, characterized in that, The drive motor also includes a third magnetic component (350) and a third coil (360). The third magnetic component (350) is disposed on the lifting bracket (210), and the third coil (360) is disposed on the frame (110). The third coil (360) is electrically connected to the first circuit board (410). The third coil (360) is used to cooperate with the third magnetic component (350) to drive the lifting bracket (210) to move relative to the frame (110) in the first direction.

6. The drive motor according to claim 1, characterized in that, The drive motor also includes a third magnetic component (350) and a third coil (360). The third magnetic component (350) is disposed on the frame (110), and the third coil (360) is disposed on the lifting bracket (210). The third coil (360) is used to cooperate with the third magnetic component (350) to drive the lifting bracket (210) to move relative to the frame (110) along the first direction.

7. The drive motor according to claim 6, characterized in that, The frame (110) is provided with a first slide groove (111) extending along the first direction, and the lifting bracket (210) is provided with a second slide groove (211) extending along the first direction. The second slide groove (211) is opposite to the first slide groove (111). A first ball bearing (510) is sandwiched between the second slide groove (211) and the first slide groove (111). The groove wall of the first slide groove (111) is provided with a third conductive part (112), and the groove wall of the second slide groove (211) is provided with a fourth conductive part (212). The third conductive part (112) is electrically connected to the fourth conductive part (212) via the first ball bearing (510). The third conductive part (112) is electrically connected to the first circuit board (410), and the third coil (360) is electrically connected to the fourth conductive part (212).

8. The drive motor according to claim 6, characterized in that, The drive motor also includes a second circuit board (420). The second circuit board (420) is electrically connected to the first circuit board (410). The second circuit board (420) includes a main body (420a), which is fixed relative to the lifting bracket (210). The third coil (360) is connected to the main body (420a).

9. A camera module, characterized in that, include: The lens (20) and the drive motor according to any one of claims 1 to 8, wherein the lens (20) is disposed on the lens holder (220).

10. An electronic device, characterized in that, include: The frame and the camera module as described in claim 9.

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