Driving device, camera module and electronic equipment

Abstract

The invention relates to a driving device, a camera module and electronic equipment, the driving device comprises a bearing part and a supporting part, and the bearing part is used for bearing a lens; the bearing part is arranged in the supporting part, the supporting part comprises a first end and a second end in the optical axis direction of the lens, and the supporting part further comprises a first side facing the bearing part and a second side deviating from the bearing part; at least two of the first end, the second end, the first side and the second side of the supporting part are provided with the adjusting assemblies, the adjusting assemblies at different positions are combined to adjust the position of the bearing part so as to adjust the optical axis position of the lens, the force for adjusting the bearing part to move can be effectively improved, the adjusting speed for adjusting the optical axis position of the lens is improved, and the adjusting efficiency is improved. Therefore, the anti-shake effect is improved, and the user experience is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic equipment, and in particular to a driving device, a camera module and an electronic equipment. Background Art

[0002] With the continuous advancement of technology, electronic devices such as mobile phones have the functions of auto focus, anti-shake, zoom, etc. However, in the related art, when adjusting the position of the optical axis to achieve the anti-shake effect, there is a problem of slow adjustment speed, which affects the user experience. Summary of the invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a driving device, a camera module and an electronic device.

[0004] According to a first aspect of the present disclosure, a driving device is provided, the driving device comprising a bearing portion, the bearing portion being used to bear a lens; a supporting portion, the bearing portion being arranged inside the supporting portion, the supporting portion comprising a first end and a second end along the optical axis direction of the lens, the supporting portion further comprising a first side facing the bearing portion and a second side away from the bearing portion; an adjusting component is arranged at at least two of the first end, the second end, the first side and the second side of the supporting portion, the adjusting component being used to adjust the position of the bearing portion so as to adjust the optical axis position of the lens.

[0005] In some embodiments of the present disclosure, the driving device also includes: a shell, the shell is provided with a first through hole for exposing the lens, the supporting portion is arranged in the shell, the side wall of the shell is located on the second side of the supporting portion and is opposite to the supporting portion, and the adjusting component includes a first adjusting component arranged between the side wall of the shell and the supporting portion.

[0006] In some embodiments of the present disclosure, there is a preset gap between the support portion and the side wall of the shell, and the first adjustment component includes a first magnet and a first coil, one of the first magnet and the first coil is arranged on the support portion, and the other of the first magnet and the first coil is arranged on the side wall of the shell.

[0007] In some embodiments of the present disclosure, the support portion is frame-shaped, and a plurality of the first adjustment components are arranged along the circumference of the frame.

[0008] In some embodiments of the present disclosure, the first adjustment component is disposed at each corner of the support portion.

[0009] In some embodiments of the present disclosure, a receiving groove is provided on the edge of the supporting portion, a column is provided on the bottom wall of the receiving groove, and the first coil of the first adjusting assembly is wound around the column; an embedding hole is provided on the housing at a position corresponding to each receiving groove, and the first magnet of the first adjusting assembly is embedded in the embedding hole.

[0010] In some embodiments of the present disclosure, the driving device further includes: a base, the base is located at the first end of the supporting portion and is movably connected to the supporting portion, and a second through hole for the lens to expose is provided on the base; the adjusting assembly further includes a second adjusting assembly provided between the base and the supporting portion.

[0011] In some embodiments of the present disclosure, the second adjusting assembly includes a second magnet and a second coil, one of the second magnet and the second coil is provided on the supporting portion, and the other of the second magnet and the second coil is provided on the base.

[0012] In some embodiments of the present disclosure, the second magnet is provided on the supporting portion, and the second coil is provided on the base; a focusing assembly is provided between the bearing portion and the supporting portion, and the focusing assembly includes a third coil provided on the bearing portion, and the third coil cooperates with the second magnet to realize the position adjustment of the bearing portion in the optical axis direction of the lens.

[0013] In some embodiments of the present disclosure, the driving device further includes: a rolling connection portion, the rolling connection portion is provided between the supporting portion and the base, and the rolling connection portion is used to movably connect the supporting portion to the base.

[0014] In some embodiments of the present disclosure, a first groove is provided on the surface of the base facing the supporting portion, and a second groove opposite to the first groove is provided on the surface of the supporting portion facing the base. The rolling connection portion includes a ball, and both sides of the ball are respectively embedded in the first groove and the second groove and can roll in the first groove and the second groove; the bottom of the first groove and the bottom of the second groove are both perpendicular to the axis of the second through hole.

[0015] In some embodiments of the present disclosure, a plurality of the second adjusting assemblies are provided along the circumferential direction of the supporting portion.

[0016] In some embodiments of the present disclosure, the supporting portion includes four frames connected in sequence, at least part of the frames are respectively provided with one of the second adjusting assemblies, and the rolling connection portion is provided at the junction of every two adjacent frames.

[0017] In some embodiments of the present disclosure, both ends of the bearing part are respectively connected to the supporting part through elastic connectors.

[0018] In some embodiments of the present disclosure, the driving device further includes: a third adjusting assembly, which is disposed between the housing and the supporting part, and is configured to push the supporting part to a preset position in a power-off state, and the optical axis direction of the lens at the preset position coincides with the axial direction of the first through hole.

[0019] In some embodiments of the present disclosure, the third adjusting assembly includes a mutually exclusive third magnet and a fourth magnet, the third magnet is disposed on the supporting part, and the fourth magnet is disposed on the housing.

[0020] In some embodiments of the present disclosure, the supporting part is in a frame shape, and at least one of the third adjusting assemblies is disposed at each corner of the supporting part.

[0021] According to a second aspect of the present disclosure, there is provided a camera module, which includes the driving device as described in the first aspect, and the camera module further includes a lens, and the lens is mounted on the bearing part of the driving device.

[0022] According to a third aspect of the present disclosure, there is provided an electronic device, which includes the camera module as described in the second aspect.

[0023] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0024] In the driving device provided by the embodiments of the present disclosure, adjusting assemblies are disposed at at least two of the first end, the second end, the first side, and the second side of the supporting part, and the position of the bearing part is adjusted by the combined action of the adjusting assemblies at different positions to adjust the optical axis position of the lens, which can effectively improve the force when adjusting the movement of the bearing part, thereby improving the adjustment speed of the optical axis position of the lens, further improving the anti-shake effect, and enhancing the user experience.

[0025] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0027] Figure 1 is a schematic structural diagram of a driving device shown according to an exemplary embodiment;

[0028] Figure 2 isFigure 1 Cross-sectional view taken along line A-A in

[0029] Figure 3 is Figure 1 Cross-sectional view taken along line B-B in

[0030] Figure 4 is Figure 1 Cross-sectional view taken along line C-C in

[0031] Figure 5 is Figure 1 Cross-sectional view taken along line D-D in

[0032] Figure 6 is an exploded view of a drive device shown according to an exemplary embodiment;

[0033] Figure 7 is a schematic structural view of a support portion shown according to an exemplary embodiment;

[0034] Figure 8 is a schematic structural view of a drive device with a hidden portion of its structure shown according to an exemplary embodiment;

[0035] Figure 9 is a schematic structural view of a drive device with a hidden portion of its structure shown according to another exemplary embodiment;

[0036] Figure 10 is a schematic structural view of a camera module shown according to an exemplary embodiment;

[0037] Figure 11 is Figure 10 Cross-sectional view taken along line E-E in

[0038] In the figure:

[0039] 1 - Drive device; 10 - Driving portion; 11 - Carrying portion; 111 - Elastic connecting member; 12 - Support portion; 121 - Accommodating groove; 122 - Cylinder; 123 - Second groove; 13 - First adjusting assembly; 131 - First coil; 132 - First magnet; 14 - Second adjusting assembly; 141 - Second coil; 142 - Second magnet; 15 - Third coil; 16 - Ball; 17 - Base; 171 - First groove; 172 - Second through hole; 18 - Housing; 181 - First through hole; 182 - Embedding hole; 19 - Third adjusting assembly; 191 - Third magnet; 192 - Second magnet; 2 - Camera module; 21 - Lens. Detailed implementation manners

[0040] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0041] With the continuous progress of technology, electronic devices such as mobile phones have functions such as autofocus, anti-shake, and zoom. In related technologies, an anti-shake function is achieved by setting a driving device, and the driving device is, for example, a motor. Exemplarily, the driving device includes a support portion, a carrier portion, and a base. The carrier portion is used to mount a lens. The support portion is movably connected to the base. The carrier portion is disposed within the support portion. An adjustment component is disposed between the carrier portion and the base. The adjustment component pushes the support portion to move, and the support portion drives the carrier portion to move, thereby achieving adjustment of the optical axis position of the lens.

[0042] However, in the driving device in the above related technology, when the support portion and the carrier portion and the lens disposed on the support portion move from a stationary state to a moving state, a large instantaneous force is required. The driving force that the adjustment component between the base and the support portion can provide is small, so that the speed of adjusting the optical axis position of the lens is slow, the optical anti-shake effect is reduced, and the user experience is affected.

[0043] To solve the above technical problems, in a driving device provided by the present disclosure, adjustment components are disposed at at least two of the first end, the second end, the first side, and the second side of the support portion. The position of the carrier portion is adjusted by the combined action of the adjustment components at different positions to adjust the optical axis position of the lens, which can effectively increase the force when adjusting the movement of the carrier portion, thereby increasing the adjustment speed of adjusting the optical axis position of the lens, further improving the anti-shake effect, and enhancing the user experience.

[0044] An exemplary embodiment of the present disclosure provides a driving device. The driving device may be, for example, a voice coil motor (VCM), a flexible motor, or a linear motor, etc. For example Figure 1 In the case where the driving device 1 shown is a VCM, specific limitations are not made in this embodiment as long as the focusing function and the optical anti-shake function of the camera module can be achieved.

[0045] Combined with Figure 1 and Figure 4 , the driving device 1 includes a carrier portion 11 and a support portion 12. Combined with Figure 11The carrying part 11 is used to carry the lens 21. Exemplarily, the carrying part 11 includes a first surface and a second surface opposite to each other. A through hole penetrating the first surface and the second surface is provided on the carrying part 11, and the lens 21 is installed in the through hole. Figure 2 , Figure 3 and Figure 4 , the bearing part 11 is arranged in the supporting part 12. The supporting part 12 includes a first end and a second end along the optical axis direction of the lens 21, and the supporting part 12 also includes a first side facing the bearing part 11 and a second side away from the bearing part 11. An adjustment component is arranged at at least two of the first end, the second end, the first side and the second side of the supporting part 12. Exemplarily, the adjustment component can be arranged at any two of the first end, the second end, the first side and the second side of the supporting part 12, for example, the adjustment component is arranged at the first end and the second side of the supporting part 12, or at the first end and the first side of the supporting part 12. The adjustment component can also be arranged at the first end, the second end, the first side and the second side of the supporting part 12. The adjustment component arranged at the first end, the second end and the second side of the supporting part 12 can adjust the position of the supporting part 12, and the supporting part 12 drives the bearing part 11 and the lens 21 located on the bearing part 11 to move, thereby realizing the adjustment of the optical axis position of the lens 21. The adjustment component disposed on the first side of the support portion 12 can directly adjust the position of the bearing portion 11 to adjust the optical axis position of the lens 21 .

[0046] The adjusting assembly is used to adjust the position of the carrying portion 11, for example, to adjust the carrying portion 11 in a first direction (for example Figure 4 ) and a second direction (eg Figure 4 The position in the y direction (shown in FIG. 1 ) is adjusted to achieve the adjustment of the optical axis position of the lens 21.

[0047] In this embodiment, the position adjustment of the bearing part 11 is achieved by combining the adjustment components at different positions, which can effectively increase the instantaneous force when the bearing part 11 moves, thereby increasing the adjustment speed of the optical axis position, that is, increasing the response speed of the drive device 1 to the optical axis position adjustment, thereby effectively improving the optical image stabilization effect and enhancing the user experience.

[0048] Combination Figure 3 and Figure 4, in one embodiment, the driving device 1 further includes a housing 18. A first through hole 181 for the lens 21 to expose is provided on the housing 18 to facilitate image acquisition. The supporting portion 12 is disposed inside the housing 18. The side wall of the housing 18 is located on the second side of the supporting portion 12 and is opposite to the supporting portion 12. The adjusting assembly includes a first adjusting assembly 13 disposed between the side wall of the housing 18 and the supporting portion 12. The first adjusting assembly 13 can adjust the position of the supporting portion 12. The supporting portion 12 drives the carrying portion 11 and the lens 21 located on the carrying portion 11 to move, so as to realize the adjustment of the optical axis position of the lens 21. With such a setting form, while making the structure of the driving device 1 simple and easy to assemble, it also makes the structure of the driving device 1 more compact, reduces the volume of the driving device 1, and thus is beneficial to the miniaturization design of the electronic device.

[0049] Combined with Figure 3 and Figure 4 , in one embodiment, there is a preset gap between the second side of the supporting portion 12 and the side wall of the housing 18. The preset gap is adapted to the moving range of the supporting portion 12 to provide space for the position movement of the supporting portion 12. The first adjusting assembly 13 includes a first magnet 132 and a first coil 131. One of the first magnet 132 and the first coil 131 is disposed on the supporting portion 12, and the other of the first magnet 132 and the first coil 131 is disposed on the side wall of the housing 18. Exemplarily, the first magnet 132 can be disposed on the supporting portion 12 and the first coil 131 can be disposed on the side wall of the housing 18, or the first coil 131 can be disposed on the supporting portion 12 and the first magnet 132 can be disposed on the side wall of the housing 18.

[0050] When the first coil 131 is energized, it can cooperate with the magnetic field of the first magnet 132, and the generated Lorentz force can push the supporting portion 12 to move in the first direction or the second direction. The supporting portion 12 drives the carrying portion 11 to move, so as to realize the adjustment of the optical axis position of the lens 21. Exemplarily, the first adjusting assembly 13 can adjust the moving distance of the supporting portion 12 by changing the magnitude of the current input to the first coil 131, and adjust the moving direction of the supporting portion 12 by changing the direction of the current, so as to realize the optical image stabilization function. With such a design, while the structure of the first adjusting assembly 13 is simple, it can effectively improve the accuracy of the adjustment of the optical axis position of the lens 21, thereby further improving the anti-shake effect and enhancing the quality of the image.

[0051] Combined with Figure 2, in one embodiment, the support portion 12 is in a frame shape, and a plurality of first adjustment components 13 are arranged along the circumferential direction of the frame shape. With such a setting form, on the one hand, the positions of the support portion 12 are adjusted jointly by the plurality of first adjustment components 13, improving the force uniformity of the support portion 12, thereby effectively improving the smoothness of the support portion 12 during movement and enhancing the anti-shake effect. On the other hand, it can also increase the instantaneous force when the support portion 12 moves, thereby increasing the adjustment speed of the optical axis position, that is, increasing the response speed of the driving device 1 to the adjustment of the optical axis position, and further enhancing the optical anti-shake effect.

[0052] Combined with Figure 2 , in one embodiment, first adjustment components 13 are arranged at the respective corners of the support portion 12. With such a design, while improving the force uniformity of the support portion 12, the first adjustment components 13 at the four corners can provide balanced thrust to the support portion 12, so that the adjusted support portion 12 can stabilize from the moving state to the stationary state faster, improving the image quality and thus enhancing the user experience.

[0053] Combined with Figure 3 , Figure 7 and Figure 8 , in one embodiment, a receiving groove 121 is provided on the corner of the support portion 12, a column 122 is provided on the bottom wall of the receiving groove 121, and the first coil 131 of the first adjustment component 13 is wound around the column 122. With such a design, the space occupied by the first coil 131 in the preset gap between the support portion 12 and the housing 18 is effectively reduced, and the width of the preset gap is decreased, so that the structure of the driving device 1 is more compact, which is beneficial to the miniaturized design of the electronic device.

[0054] Embedding holes 182 are provided at the positions of the housing 18 corresponding to the respective receiving grooves 121, and the first magnets 132 of the first adjustment component 13 are embedded in the embedding holes 182. In this way, the structure of the driving device 1 can also be made more compact.

[0055] Combined with Figure 4 , in one embodiment, the driving device 1 further includes a base 17, the base 17 is located at the first end of the support portion 12 and is movably connected to the support portion 12, and a second through hole 172 for the lens 21 to expose is provided on the base 17. With such a design, the support portion 12 can move, facilitating the adjustment of the position of the support portion 12.

[0056] The adjusting assembly further includes a second adjusting assembly 14 disposed between the base 17 and the supporting portion 12. The second adjusting assembly 14 can adjust the position of the supporting portion 12 in the first direction and the second direction. The supporting portion 12 drives the movement of the carrying portion 11 and the lens 21 located on the carrying portion 11, so as to realize the adjustment of the optical axis position of the lens 21. By adjusting the position of the supporting portion 12 simultaneously through the first adjusting assembly 13 and the second adjusting assembly 14, the instantaneous force when the carrying portion 11 moves can be further improved, thereby improving the adjustment speed of the optical axis position, that is, improving the response speed of the driving device 1 for adjusting the optical axis position, and further effectively improving the optical image stabilization effect and enhancing the user experience.

[0057] Combined with Figure 4 , in one embodiment, the second adjusting assembly 14 includes a second magnet 142 and a second coil 141. One of the second magnet 142 and the second coil 141 is disposed on the supporting portion 12, and the other of the second magnet 142 and the second coil 141 is disposed on the base 17. Exemplarily, the second magnet 142 can be disposed at the first end of the supporting portion 12, and the second coil 141 can be disposed on the base 17, or the second coil 141 can be disposed at the first end of the supporting portion 12, and the second magnet 142 can be disposed on the base 17.

[0058] When the second coil 141 is energized, it can cooperate with the magnetic field of the second magnet 142, and the generated Lorentz force can push the supporting portion 12 to move in the first direction or the second direction, thereby driving the movement of the carrying portion 11 and the lens 21 located on the carrying portion 11 to adjust the optical axis position of the lens 21. Exemplarily, the second adjusting assembly 14 can adjust the moving distance of the supporting portion 12 by changing the magnitude of the current input to the second coil 141, and adjust the moving direction of the supporting portion 12 by changing the direction of the current, so as to realize the optical image stabilization function. Such a design makes the structure of the second adjusting assembly 14 simple while effectively improving the accuracy of adjusting the optical axis position of the lens 21, thereby further improving the anti-shake effect and enhancing the image quality.

[0059] Combined with Figure 4 and Figure 6 , in one embodiment, the second magnet 142 is disposed on the supporting portion 12, and the second coil 141 is disposed on the base 17. A focusing assembly is disposed between the carrying portion 11 and the supporting portion 12. The focusing assembly is used to adjust the position of the carrying portion 11 in the optical axis direction of the lens 21 (such as Figure 4 the z direction shown in

[0060] The focusing component includes a third coil 15 disposed on the carrying portion 11. The third coil 15 cooperates with the second magnet 142 to adjust the position of the carrying portion 11 in the optical axis direction of the lens 21. When the third coil 15 is energized, it can cooperate with the magnetic field of the second magnet 142, and the generated Lorentz force can then push the second carrying portion 11 to move in the optical axis direction to achieve the focusing function. Exemplarily, the moving distance of the carrying portion 11 can be adjusted by changing the magnitude of the current input to the third coil 15, and the moving direction of the carrying portion 11 can be adjusted by changing the direction of the current, thereby achieving the focusing of the camera module 2.

[0061] In this embodiment, by disposing the second magnet 142 on the support portion 12 and the second coil 141 on the base 17, the second magnet 142 can be further cooperated with the third coil 15, saving the use of magnets. In this way, not only can the structure of the driving device 1 be made more compact, which is beneficial to the miniaturization design of the electronic device, but also the weight of the driving device 1 can be effectively reduced, which is beneficial to the lightweight design of the electronic device.

[0062] Combined with Figure 4 and Figure 6 , in one embodiment, the second adjustment component 14 includes two second magnets 142 disposed on the support portion 12, and the two second magnets 142 are stacked in the optical axis direction. In this way, the driving force generated by the second adjustment component 14 can be further increased, thereby improving the adjustment speed when adjusting the positions of the support portion 12 and the carrying portion 11, and further improving the anti-shake effect and the focusing effect.

[0063] Combined with Figure 6 , in one embodiment, the driving device 1 further includes a driving portion 10 and a circuit board electrically connected to the driving portion 10. The first adjustment component 13, the first coil 131, the second coil 141 of the second adjustment component 14, and the third coil 15 are all electrically connected to the circuit board. In this way, the magnitude and direction of the current input to the first coil 131, the second coil 141, and the third coil 15 can be controlled by the driving portion 10, thereby effectively ensuring the accuracy of the position adjustment of the support portion 12 and the carrying portion 11.

[0064] Combined with Figure 5 and Figure 6 , in one embodiment, the driving device 1 further includes a rolling connection portion, and the rolling connection portion is disposed between the support portion 12 and the base 17. The rolling connection portion is used to movably connect the support portion 12 to the base 17. When the first adjustment component 13 and the first adjustment component 13 adjust the position of the support portion 12 to move, the rolling connection portion can roll between the support portion 12 and the base 17. Adopting such a setting form effectively improves the smoothness when the support portion 12 moves relative to the base 17, thereby further improving the response speed of the driving device 1 for adjusting the optical axis position.

[0065] Combined with Figure 5 、 Figure 6 and Figure 9 In one embodiment, a first groove 171 is provided on the surface of the base 17 facing the support portion 12, and a second groove 123 opposite to the first groove 171 is provided on the surface of the support portion 12 facing the base 17. The rolling connection portion includes a ball 16. Two sides of the ball 16 are respectively embedded in the first groove 171 and the second groove 123 and can roll in the first groove 171 and the second groove 123. With such a design, on the one hand, the structure is simple and convenient for processing. On the other hand, the first groove 171 and the second groove 123 play a role in limiting the ball 16, preventing the ball 16 from falling off and affecting the movement of the support portion 12. At the same time, after the ball 16 is embedded in the first groove 171 and the second groove 123, it can also play a role in limiting the movement of the support portion 12, preventing the movement range of the support portion 12 from being too large and affecting the normal adjustment of the first adjustment assembly 13 and the second adjustment assembly 14, thereby effectively improving the reliability of the driving device 1.

[0066] The bottom of the first groove 171 and the bottom of the second groove 123 are both perpendicular to the axis of the second through hole 172. In this way, it is ensured that the support portion 12 can always move along the first direction and the second direction perpendicular to the optical axis direction of the lens 21, thereby improving the focusing effect of the second lens 21.

[0067] Combined with Figure 2 and Figure 6 In one embodiment, a plurality of second adjustment assemblies 14 are provided along the circumferential direction of the support portion 12. With such a setting form, on the one hand, while improving the support effect on the support portion 12 and further improving the reliability of the driving device 1, the positions of the support portion 12 are adjusted by a plurality of second adjustment assemblies 14 together, improving the force uniformity of the support portion 12, thereby effectively improving the smoothness when the support portion 12 moves, and further improving the anti-shake effect.

[0068] Combined with Figure 2 and Figure 9 In one embodiment, the support portion 12 includes four frames connected in sequence. At least some of the frames are provided with a second adjustment assembly 14 correspondingly. Exemplarily, the four frames include a first frame, a second frame, a third frame, and a fourth frame connected in sequence. The first frame and the third frame are opposite, and the second frame and the fourth frame are opposite. The second adjustment assembly 14 can be provided only on the first frame and the third frame, or only on the second frame and the fourth frame, or on the first frame, the second frame, and the third frame, or on all four frames.

[0069] A rolling connection part is provided at the junction of every two adjacent borders. Exemplarily, the rolling connection part is a ball 16. The diameters of the balls 16 can be the same, so that the bearing part 11 can always move in a first direction and a second direction perpendicular to the optical axis direction of the lens 21, thereby improving the focusing effect of the lens 21. The diameters of the balls 16 can also be different. In this case, each ball 16 should be adapted to the depth of the first groove 171 and the depth of the second groove 123 where it is located. For example, when the diameter of the ball 16 is larger, the depth of the first groove 171 and / or the second groove 123 also increases; when the diameter of the ball 16 is smaller, the depth of the first groove 171 and / or the second groove 123 also decreases, so that when the multiple balls 16 roll, it can be ensured that the bearing part 11 can always move in a first direction and a second direction perpendicular to the optical axis direction of the lens 21, thereby improving the focusing effect of the lens 21. In this way, the stability and smoothness of the movement of the support part 12 can be further improved, thereby effectively improving the response speed of the driving device 1 for adjusting the optical axis position.

[0070] Combined with Figure 6 , in one embodiment, both ends of the bearing part 11 are respectively connected to the support part 12 through elastic connectors 111. With such a design, on the one hand, the stability of the bearing part 11 when arranged on the support part 12 is effectively improved, thereby improving the reliability of the driving device 1. On the other hand, the bearing part 11 is connected to the support part 12 through the elastic connectors 111, which is convenient for the bearing part 11 to move in the optical axis direction. When the focusing component adjusts the movement of the bearing part 11, the elastic connectors 111 undergo elastic deformation to provide for the adjustment of the position of the bearing part 11 by the focusing component. In this way, the setting of the bearing part 11 is simple and convenient for processing and assembly.

[0071] In one embodiment, the elastic connector 111 includes a first riveting part riveted to the bearing part 11, a second riveting part riveted to the support part 12, and an elastic connection part connecting the first riveting part and the second riveting part. The first riveting part can be fixed to the bearing part 11 by a hot riveting process, for example, and the second riveting part can also be fixed to the support part 12 by a hot riveting process, for example. In this way, the bearing part 11 is assembled on the support part 12, the assembly steps are simple, and the stability of the bearing part 11 when arranged on the support part 12 can be effectively ensured.

[0072] The elastic connection part has a circuitously bent strip structure. With such a setting form, the degree of elastic deformation of the elastic connection part can be effectively improved, thereby providing a larger movement space for the movement of the bearing part 11 in the optical axis direction, and further effectively improving the focusing effect.

[0073] Combined with Figure 2 , Figure 3 and Figure 8, in one embodiment, since both the first adjustment component 13 and the second adjustment component 14 can only generate the driving force to push the support portion 12 when they are in the powered-on state. In the powered-off state, that is, when the driving device 1 is not powered on, the support portion 12 and the carrying portion 11 and the lens 21 provided on the support portion 12 will move synchronously within the housing 18, which may cause the problem of eccentricity of the lens 21 and affect the user experience. It can be understood that eccentricity means that the optical axis direction of the lens 21 deviates from the position where it coincides with the axial direction of the first through hole 181 towards a direction away from the axial direction of the first through hole 181.

[0074] Based on this, the driving device 1 further includes a third adjustment component 19. The third adjustment component 19 is arranged between the housing 18 and the support portion 12. The third adjustment component 19 is used to push the support portion 12 to a preset position in the powered-off state, and the optical axis direction of the lens 21 at the preset position coincides with the axial direction of the first through hole 181. With such a setting form, under the push of the third adjustment component 19, even when the driving device 1 is in the powered-off state, it can be ensured that the optical axis direction of the lens 21 coincides with the axial direction of the first through hole 181, avoiding the problem of eccentricity. Thus, not only can it avoid the collision between the support portion 12 and the housing 18 caused by the eccentricity problem, effectively improving the reliability of the driving device 1, but also it can effectively improve the anti-shake effect in the powered-off state, improving the quality of the image, and further enhancing the user experience.

[0075] Combined with Figure 2 , Figure 3 and Figure 8 , in one embodiment, the third adjustment component 19 includes a mutually exclusive third magnet 191 and a fourth magnet 192. The third magnet 191 is arranged on the support portion 12, and the fourth magnet 192 is arranged on the housing 18. Under the action of the third magnet 191 and the fourth magnet 192, a driving force is provided to the support portion 12 to move in a direction away from the housing 18. When the driving device 1 is powered on, the driving forces generated by the first adjustment component 13 and the second adjustment component 14 are greater than the driving forces generated by the third magnet 191 and the fourth magnet 192, thereby ensuring the normal adjustment of the position of the support portion 12 by the first adjustment component 13 and the second adjustment component 14. When the driving device 1 is in the powered-off state, the driving forces generated by the third magnet 191 and the fourth magnet 192 push the support portion 12 to move so that the optical axis direction of the lens 21 coincides with the axial direction of the first through hole 181. With such a design, the structure of the third adjustment component 19 is simple, facilitating processing and assembly.

[0076] Combined with Figure 2 and Figure 6, in one embodiment, the support portion 12 is in a frame shape, and at least one third adjustment component 19 is provided at each corner of the support portion 12. Exemplarily, only one third adjustment component 19 can be provided at each corner of the support portion 12, or multiple third adjustment components 19 can be provided at each corner of the support portion 12.

[0077] By providing the third adjustment component 19 at each corner of the support portion 12, the force balance of the support portion 12 can be improved, and further ensure that the optical axis direction of the lens 21 coincides with the axial direction of the first through hole 181.

[0078] By providing multiple third adjustment components 19 at each corner, the driving force of the third adjustment component 19 on the support portion 12 is increased, thereby increasing the speed of pushing the support portion 12 back to the center in the power-off state, and improving the user experience. It can be understood that returning to the center means moving the optical axis direction of the lens 21 to a position where it coincides with the axial direction of the first through hole 181.

[0079] In one embodiment, the assembly process of the driving device 1 is as follows:

[0080] The first step: Place the support portion 12 on a special fixture, install the first coil 131 on the support portion 12 and weld it to connect, and at the same time install the third magnet 191. Fix an elastic connecting portion on the bearing portion 11 and the support portion 12 through the fixture, and fix it by hot riveting process and sealing glue. Weld the driving portion 10 at the preset fixed position. Flip the special fixture 180°, and complete the assembly of the other elastic connecting portion through the same process.

[0081] The second step: Place the base 17 on a special fixture, encapsulate and fix the second coil 141 on the base 17 and weld it to connect. Place the four balls 16 in the four first grooves 171 respectively, and assemble the assembly completed in the first step on the base 17.

[0082] The third step: Assemble the housing 18 on the assembly completed in the second step and fix it by sealing glue. Fix the fourth magnet 192 and the first magnet 132 to the corresponding positions of the housing 18 respectively to complete the assembly of the driving device 1.

[0083] One exemplary embodiment of the present disclosure provides a camera module, in combination with Figure 10 and Figure 11 , the camera module 2 includes the driving device 1 and the lens 21 as described above, and the lens 21 is installed on the bearing portion 11 of the driving device 1. In combination with Figure 2 , Figure 3 and Figure 4, the bearing portion 11 is arranged in the supporting portion 12. The supporting portion 12 includes a first end and a second end along the optical axis direction of the lens 21, and the supporting portion 12 also includes a first side facing the bearing portion 11 and a second side away from the bearing portion 11. An adjustment component is arranged at at least two of the first end, the second end, the first side and the second side of the supporting portion 12. The adjustment component is used to adjust the position of the bearing portion 11, for example, adjust the position of the bearing portion 11 in the first direction and the second direction, so as to adjust the optical axis position of the lens 21.

[0084] With such a design, the position adjustment of the bearing part 11 is achieved through the combined use of adjustment components at different positions, which can effectively increase the instantaneous force when the bearing part 11 moves, thereby increasing the adjustment speed of the optical axis position, that is, increasing the response speed of the drive device 1 to the adjustment of the optical axis position, thereby effectively improving the optical image stabilization effect and enhancing the user experience.

[0085] An exemplary embodiment of the present disclosure provides an electronic device, which may be, for example, a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc., and may also be a non-mobile device such as a personal computer (PC), a television (TV), a teller machine, or a self-service machine.

[0086] The electronic device includes the camera module 2 as described above. Figure 11 The camera module 2 includes the driving device 1 and the lens 21 as described above. The driving device 1 includes a bearing portion 11 and a supporting portion 12. The lens 21 is mounted on the bearing portion 11. Figure 2 , Figure 3 and Figure 4 , the bearing portion 11 is arranged in the supporting portion 12. The supporting portion 12 includes a first end and a second end along the optical axis direction of the lens 21, and the supporting portion 12 also includes a first side facing the bearing portion 11 and a second side away from the bearing portion 11. An adjustment component is arranged at at least two of the first end, the second end, the first side and the second side of the supporting portion 12. The adjustment component is used to adjust the position of the bearing portion 11, for example, adjust the position of the bearing portion 11 in the first direction and the second direction, so as to adjust the optical axis position of the lens 21.

[0087] With such a design, the position of the bearing part 11 is adjusted by the combined action of the adjusting components at different positions, which can effectively improve the instantaneous force when the bearing part 11 moves, thereby increasing the adjusting speed of the optical axis position, that is, improving the response speed of the driving device 1 for adjusting the optical axis position, and further effectively improving the optical image stabilization effect and enhancing the user experience.

[0088] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known common general knowledge or conventional technical means in the technical field not disclosed herein. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0089] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A driving device, characterized in that, The driving device includes: a bearing part for bearing a lens; a supporting part, the bearing part is arranged inside the supporting part, the supporting part includes a first end and a second end along the optical axis direction of the lens, and the supporting part further includes a first side facing the bearing part and a second side facing away from the bearing part; Adjusting components are arranged at at least two of the first end, the second end, the first side and the second side of the supporting part, and the adjusting components are used for adjusting the position of the bearing part to adjust the optical axis position of the lens.

2. The drive device according to claim 1, characterized in that, The driving device further includes: a housing, a first through hole for the lens to expose is arranged on the housing, the supporting part is arranged inside the housing, the side wall of the housing is located on the second side of the supporting part and is opposite to the supporting part, and the adjusting component includes a first adjusting component arranged between the side wall of the housing and the supporting part.

3. The drive device according to claim 2, characterized in that, A preset gap is provided between the supporting part and the side wall of the housing. The first adjusting component includes a first magnet and a first coil. One of the first magnet and the first coil is arranged on the supporting part, and the other of the first magnet and the first coil is arranged on the side wall of the housing.

4. The drive device according to claim 2, characterized in that, The supporting part is in a frame shape, and a plurality of the first adjusting components are arranged along the circumferential direction of the frame shape.

5. The drive device according to claim 4, characterized in that The first adjusting components are arranged at each corner of the supporting part.

6. The drive device according to claim 5, characterized in that, A receiving groove is arranged on the corner of the supporting part, a column body is arranged on the bottom wall of the receiving groove, and the first coil of the first adjusting component is wound around the column body. Embedding holes are arranged at positions of the housing corresponding to the respective receiving grooves, and the first magnets of the first adjusting components are embedded in the embedding holes.

7. The drive device according to claim 1, characterized in that, The driving device further includes: a base, the base is located at the first end of the supporting part and is movably connected to the supporting part, and a second through hole for the lens to expose is arranged on the base; The adjusting component further includes a second adjusting component arranged between the base and the supporting part.

8. The drive device according to claim 7, characterized in that, The second adjusting component includes a second magnet and a second coil. One of the second magnet and the second coil is arranged on the supporting part, and the other of the second magnet and the second coil is arranged on the base.

9. The drive device according to claim 8, characterized in that, The second magnet is arranged on the supporting part, and the second coil is arranged on the base; A focusing component is arranged between the bearing part and the supporting part. The focusing component includes a third coil arranged on the bearing part, and the third coil cooperates with the second magnet to realize the position adjustment of the bearing part in the optical axis direction of the lens.

10. The drive device according to claim 7, characterized in that, The driving device further includes: a rolling connection part arranged between the supporting part and the base, and the rolling connection part is used for movably connecting the supporting part to the base.

11. The drive device according to claim 10, characterized in that, A first groove is arranged on the surface of the base facing the supporting part, a second groove opposite to the first groove is arranged on the surface of the supporting part facing the base, the rolling connection part includes a ball, and both sides of the ball are respectively embedded in the first groove and the second groove and can roll in the first groove and the second groove; The bottom of the first groove and the bottom of the second groove are both perpendicular to the axis of the second through hole.

12. The drive device according to claim 10, characterized in that, A plurality of the second adjustment components are arranged along the circumferential direction of the support portion.

13. The drive device according to claim 12, characterized in that, The support portion includes four frames connected in sequence, at least one of the second adjustment components is correspondingly arranged on at least part of the frames, and the rolling connection portions are arranged at the junctions of every two adjacent frames.

14. The driving device according to any one of claims 1 to 13, characterized in that Both ends of the bearing portion are respectively connected to the support portion through elastic connection members.

15. The drive device according to any one of claims 2 to 13, characterized in that, The driving device further includes: A third adjustment component, which is arranged between the housing and the support portion, and is used to push the support portion to a preset position in a power-off state, and the optical axis direction of the lens at the preset position coincides with the axial direction of the first through hole.

16. The drive device according to claim 15, characterized in that, The third adjustment component includes a mutually exclusive third magnet and a fourth magnet, the third magnet is arranged on the support portion, and the fourth magnet is arranged on the housing.

17. The drive device according to claim 15, characterized in that, The support portion is in a frame shape, and at least one of the third adjustment components is arranged at each corner of the support portion.

18. A camera module, characterized in that, The camera module includes the driving device according to any one of claims 1 to 17, and the camera module further includes a lens, and the lens is mounted on the bearing portion of the driving device.

19. An electronic device, characterized in that, The electronic device includes the camera module according to claim 18.

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