Drive device, camera mold and electronic equipment

Abstract

The present invention discloses a drive device, a camera module, and an electronic device, comprising: an inner carrier assembly, the inner carrier assembly including a lens mount and a focus coil, the focus coil being fixed to the lens mount, the lens mount having a mounting hole for mounting a lens; an outer carrier assembly, the outer carrier assembly being sleeved on the outside of the inner carrier assembly, the outer carrier assembly including a magnet bracket and a common magnet, the common magnet being disposed on the magnet bracket, and the common magnet corresponding to the focus coil; an anti-shake assembly, the anti-shake assembly being sleeved on the outside of the outer carrier assembly, the anti-shake assembly including a fixed bracket and an anti-shake coil, the anti-shake coil being fixed to the fixed bracket, and the anti-shake coil corresponding to the common magnet; the common magnet being used to generate a magnetic field, and both the focus coil and the anti-shake coil being located in the magnetic field. The drive device provided by the present application can avoid the problem of magnetic interference.

Description

Technical Field

[0001] The present invention relates to the technical field of voice coil motors, and in particular to a driving device, a camera module, and an electronic device. Background Art

[0002] With the development of electronic technology, the camera performance of electronic devices is becoming more and more powerful. When taking pictures, existing electronic devices can not only automatically focus but also automatically prevent shaking.

[0003] Currently, when electronic devices take photos, both autofocus and automatic image stabilization are achieved through a driving device installed in the electronic device. Specifically, the driving device can achieve the autofocus function through a magnet used to achieve the autofocus function, and achieve the automatic image stabilization function through a magnet used to achieve the automatic image stabilization function.

[0004] However, there is a serious magnetic interference problem between the magnetic field generated by the magnet used to achieve the focusing function and the magnetic field generated by the magnet used to achieve the anti-shake function, which seriously affects the performance of the driving device and further affects the performance of the entire electronic device. Summary of the Invention

[0005] The present invention discloses a driving device, a camera module and an electronic device, which can avoid the occurrence of serious magnetic interference problems and improve the performance of the driving device.

[0006] In order to achieve the above objectives, the present invention discloses, on the one hand, a driving device, comprising:

[0007] An inner carrier assembly, the inner carrier assembly comprising a lens mount and a focus coil, the focus coil being fixed to the lens mount, the lens mount having a mounting hole for mounting a lens;

[0008] An outer carrier assembly, the outer carrier assembly being sleeved on the outer side of the inner carrier assembly, the outer carrier assembly comprising a magnet bracket and a common magnet, the common magnet being disposed on the magnet bracket and corresponding to the position of the focus coil;

[0009] An anti-shake assembly, the anti-shake assembly being sleeved on the outside of the outer carrier assembly, the anti-shake assembly comprising a fixing bracket and an anti-shake coil, the anti-shake coil being fixed to the fixing bracket and corresponding to the position of the common magnet;

[0010] The common magnet is used to generate a magnetic field, the focusing coil and the anti-shake coil are both located in the magnetic field, the anti-shake coil is used to drive the outer carrier assembly and the inner carrier assembly to rotate together around a preset axis relative to the fixed bracket when powered, the preset axis is perpendicular to the axial direction of the mounting hole, and the focusing coil is used to drive the lens mount to move relative to the magnet bracket along the axial direction of the mounting hole when powered.

[0011] Since the outer carrier assembly is ring-mounted on the outside of the inner carrier assembly, the inner carrier assembly includes a lens mount and a focusing coil, and the outer carrier assembly includes a magnet bracket and a common magnet, and since the focusing coil is fixed on the lens mount, the common magnet is arranged on the magnet bracket, and the common magnet corresponds to the position of the focusing coil, the focusing coil will be located in the magnetic field generated by the common magnet, and when the focusing coil moves axially along the mounting hole relative to the common magnet, the lens mount can move axially along the mounting hole relative to the magnet bracket.

[0012] In this case, when focusing is performed using the drive device, the focus coil can first be energized. After the focus coil is energized, according to the left-hand rule, an Ampere force will be generated between the focus coil and the shared magnet, thereby causing the focus coil to move axially relative to the shared magnet along the mounting hole. After the focus coil moves axially relative to the shared magnet along the mounting hole, the lens mount can be moved axially relative to the magnet holder along the mounting hole. Since the mounting hole of the lens mount is used to mount the lens, after the lens mount moves axially relative to the magnet holder along the mounting hole, the lens can be moved relative to the magnet holder along the axial direction Z of the mounting hole. At this point, the drive device achieves the focusing function.

[0013] Similarly, since the anti-shake assembly is ring-mounted on the outside of the outer carrier assembly, the anti-shake assembly includes a fixed bracket and an anti-shake coil, the anti-shake coil is fixed on the fixed bracket, and the anti-shake coil corresponds to the position of the common magnet. Therefore, the anti-shake coil will be located in the magnetic field generated by the common magnet, and when the common magnet rotates relative to the anti-shake coil around the preset axis relative to the fixed bracket, the outer carrier assembly and the inner carrier assembly can rotate together around the preset axis relative to the fixed bracket.

[0014] In this case, when anti-shake is performed by the driving device, the anti-shake coil can be energized first. After the anti-shake coil is energized, according to the left-hand rule, an interacting Ampere force will be generated between the anti-shake coil and the common magnet, and the common magnet can be made to rotate relative to the anti-shake coil around a preset axis relative to the fixed bracket. In this way, the anti-shake coil can drive the outer carrier assembly and the inner carrier assembly to rotate together around the preset axis relative to the fixed bracket. At this point, the driving device realizes the anti-shake function.

[0015] It can be seen from the above description that the focus coil and the anti-shake coil are both located in the magnetic field generated by the common magnet, and the shared magnet can enable the drive device to achieve the focus function and the anti-shake function. In layman's terms, the drive device provided in the embodiment of the present application does not need to be separately configured with a magnet for achieving the focus function and a magnet for achieving the anti-shake function. The shared magnet can enable the drive device to achieve the focus function and the anti-shake function. In this way, the problem of magnetic interference between the magnetic field generated by the magnet for achieving the focus function and the magnetic field generated by the magnet for achieving the anti-shake function can be avoided, thereby improving the performance of the drive device.

[0016] In addition, by sharing the magnets, space can be saved to a certain extent, making the drive device smaller and more compact.

[0017] In addition, since the anti-shake component is looped around the outside of the outer carrier component, the anti-shake component includes a fixed bracket and an anti-shake coil, the anti-shake coil is fixed on the fixed bracket, and the anti-shake coil corresponds to the position of the common magnet. It can be seen that in the embodiment of the present application, the fixed bracket is directly looped around the outside of the magnet bracket, while in the related technology, a shell is also provided on the outside of the magnet bracket. In other words, in the related technology, a shell is also provided between the fixed bracket and the magnet bracket, while the driving device provided in the embodiment of the present application can omit the shell, thereby making the driving device more compact.

[0018] Optionally, a magnet groove is provided on the magnet bracket, and the common magnet is located in the magnet groove.

[0019] By setting a magnet groove on the magnet bracket and setting the common magnet in the magnet groove, at least part of the structure of the common magnet can be sunk in the magnet groove. In this way, the structure composed of the common magnet and the magnet bracket can be made compact, thereby making the entire drive device more compact.

[0020] Optionally, the magnet support has a first magnet support surface and a second magnet support surface disposed opposite to each other, and a magnet support inner side wall and a magnet support outer side wall located between the first magnet support surface and the second magnet support surface and connecting the first magnet support surface and the second magnet support surface, and the axial direction of the mounting hole is perpendicular to the first magnet support surface and / or the second magnet support surface;

[0021] The magnet sinking groove is formed by being recessed in a direction from the outer side wall of the magnet support to the inner side wall of the magnet support.

[0022] Because the first and second magnet support surfaces are disposed opposite each other, and the inner and outer sidewalls of the magnet support are located between and connect the first and second magnet support surfaces, the magnet support has a ring-shaped structure. Because the axial direction of the mounting hole is perpendicular to the first and / or second magnet support surfaces, the inner sidewall of the magnet support corresponds to the inner surface of the ring-shaped structure, and the outer sidewall of the magnet support corresponds to the outer surface of the ring-shaped structure.

[0023] Based on this, when the magnet recess is formed along the direction from the outer wall of the magnet holder toward the inner wall of the magnet holder, that is, the magnet recess is formed along the direction from the outer annular surface toward the inner annular surface. This allows the shared magnet to be installed in the magnet recess, and the distance between the shared magnet and the image stabilization coil can be smaller than the distance between the shared magnet and the focus coil. In other words, the shared magnet can be closer to the image stabilization coil than to the focus coil.

[0024] As can be seen from the above description, the anti-shake coil is used to drive the outer carrier assembly and the inner carrier assembly to move axially relative to the fixed bracket along the mounting hole, while the focus coil is used to drive the lens mount to move axially relative to the magnet bracket along the mounting hole. Therefore, the Ampere force required to be provided by the anti-shake coil is greater than the Ampere force required to be provided by the focus coil. It can be understood that the Ampere force is determined by the magnitude of the current flowing through the coil and the magnitude of the magnetic field provided by the shared magnet. Specifically, the Ampere force is directly proportional to both the current and the magnetic field. In this embodiment, by forming a recessed magnet groove in a direction from the outer wall of the magnet bracket to the inner wall of the magnet bracket, the shared magnet can be closer to the anti-shake coil than the focus coil, thereby increasing the magnetic field strength near the anti-shake coil. This allows the anti-shake coil to generate a large Ampere force even when the current is low, thus saving energy and making the drive device more energy-efficient.

[0025] Optionally, the magnet bracket has a "rectangular ring" structure, and the outer wall of the magnet bracket has four edges parallel to the axial direction of the mounting hole, and a first chamfer is provided at two adjacent edges. The number of the magnet grooves is two, and the two magnet grooves are respectively provided at the first chamfer.

[0026] When the magnet holder is in a "rectangular ring" structure, by setting a first chamfer at two adjacent edges of the four edges of the outer wall of the magnet holder, it can be understood that the first chamfer needs to cut off the edges of the "rectangular ring" structure. After the edges of the "rectangular ring" structure are cut off, a larger surface can be formed, which provides convenience for setting the magnet sink groove. At the same time, it can also save space, thereby making the magnet holder more compact, and then making the entire drive device more compact.

[0027] Optionally, a coil groove is provided on the fixing bracket, and the anti-shake coil is located in the coil groove.

[0028] By setting a coil groove on the fixed bracket and setting the anti-shake coil in the coil groove, at least part of the structure of the anti-shake coil can be sunk in the coil groove. In this way, the structure composed of the anti-shake coil and the fixed bracket can be made compact, thereby making the entire driving device more compact.

[0029] Optionally, the fixing bracket has a second chamfer corresponding to the first chamfer, and the coil sink is arranged at the second chamfer.

[0030] By setting a second chamfer on the fixed bracket, on the one hand, it can facilitate the setting of the coil sink, and on the other hand, it can also save space, thereby making the fixed bracket more compact, and thus making the entire drive device more compact.

[0031] Optionally, the lens mount has a third chamfer corresponding to the first chamfer, the number of the focusing coils is two, and the two focusing coils are respectively arranged at the third chamfer.

[0032] By providing a third chamfer corresponding to the first chamfer on the lens mount, on the one hand, it can facilitate the arrangement of the focus coil, and on the other hand, it can also save space, thereby making the lens mount more compact, and thus making the entire drive device more compact.

[0033] Optionally, the driving device further includes:

[0034] A first guide mechanism is located between the lens mount and the magnet bracket, and is used to guide the lens mount to move axially relative to the magnet bracket along the mounting hole.

[0035] When the driving device further includes a first guide mechanism, the first guide mechanism can play a guiding role, thereby enabling the lens mount to move relatively smoothly and steadily relative to the magnet bracket along the axial direction of the mounting hole.

[0036] Optionally, the first guide mechanism includes a ball;

[0037] The magnet support comprises a first magnet support surface and a second magnet support surface disposed opposite to each other, and a magnet support inner side wall and a magnet support outer side wall located between the first magnet support surface and the second magnet support surface and connecting the first magnet support surface and the second magnet support surface, and the axial direction of the mounting hole is perpendicular to the first magnet support surface and / or the second magnet support surface;

[0038] The lens mount has an outer wall of the lens mount arranged opposite to the inner wall of the magnet bracket, a first guide groove is arranged on the outer wall of the lens mount, a second guide groove is arranged at a position of the inner wall of the magnet bracket opposite to the first guide groove, the first guide groove and the second guide groove enclose a guide space, and the ball is located in the guide space.

[0039] Since the ball is located in the guide space formed by the first guide groove and the second guide groove, when the lens mount moves axially along the mounting hole relative to the magnet bracket, the ball can play a guiding role, thereby making the lens mount move axially along the mounting hole relative to the magnet bracket smoother and more stable.

[0040] When the first guide mechanism includes a ball, since the structure of the ball is very simple, the manufacturing cost of the driving device can be reduced to a certain extent.

[0041] Optionally, the guiding direction of the guide space is parallel to the axial direction of the mounting hole.

[0042] In other words, the guiding direction of the guiding space is parallel to the movement direction of the lens mount relative to the magnet bracket, so that the lens mount can move more smoothly and steadily along the axial direction of the mounting hole relative to the magnet bracket.

[0043] Optionally, the driving device further includes: a limiting mechanism, which is used to limit the distance between the inner wall of the magnet bracket and the outer wall of the lens holder, so that the ball is clamped between the first guide groove and the second guide groove.

[0044] By providing a limiting mechanism, the distance between the inner wall of the magnet holder and the outer wall of the lens mount can be maintained constant, thereby maintaining a stable size of the guide space formed by the first and second guide grooves. In layman's terms, by providing a limiting mechanism, the ball bearing can be stably clamped between the first and second guide grooves, preventing the distance between the first and second guide grooves from being too large, which could cause the ball bearing to wobble between the first and second guide grooves.

[0045] Optionally, the limiting mechanism includes:

[0046] a limiting magnet, the limiting magnet being disposed on one of the magnet bracket or the lens mount;

[0047] A magnetic element is provided on the magnet bracket or the other of the lens holder, the magnetic element is arranged opposite to the limiting magnet, and the limiting magnet and the magnetic element are attracted to each other to clamp the ball between the first guide groove and the second guide groove.

[0048] That is, the limiting magnet provided on the magnet bracket and the magnetic element provided on the lens mount can generate mutual attraction, which makes the first guide groove and the second guide groove approach each other, and then makes the ball be clamped between the first guide groove and the second guide groove. The implementation method is very simple and can reduce the production cost of the driving device to a certain extent.

[0049] Optionally, the limiting magnet is arranged on a side of the magnet bracket away from the common magnet.

[0050] By arranging the limiting magnet on the side of the magnet bracket away from the common magnet, the distance between the limiting magnet and the common magnet can be made greater, thereby avoiding the problem of magnetic interference between the magnetic fields of the limiting magnet and the common magnet.

[0051] Optionally, the driving device further includes: a second guide mechanism, the second guide mechanism being located between the fixed bracket and the magnet bracket, and the second guide mechanism being used to guide the magnet bracket and the lens mount to rotate together around the preset axis relative to the fixed bracket.

[0052] By providing the second guide mechanism, since the second guide mechanism can guide the magnet bracket and the lens mount to rotate relative to the fixed bracket, the magnet bracket and the lens mount can rotate relative to the fixed bracket smoothly and steadily.

[0053] Optionally, the driving device further includes:

[0054] an elastic element, the elastic element comprising a first fixing portion, an elastic portion, and a second fixing portion, the first fixing portion and the second fixing portion being connected via the elastic portion, the first fixing portion being fixed to the lens mount, and the second fixing portion being disposed on the magnet bracket;

[0055] The focusing coil is used to drive the lens mount to move away from the initial position relative to the magnet bracket along the axial direction of the mounting hole when energized, and the elastic part is used to drive the lens mount to return to the initial position when the focusing coil loses power.

[0056] By providing the elastic element, the lens holder can automatically return to its initial position, thereby saving energy consumption.

[0057] Optionally, the driving device further includes: a base, the base is fixed to one end of the lens mount close to the image side and is movably connected to the magnet bracket, and the second fixed member is connected to the base.

[0058] By providing a base, on the one hand, the base can protect the driving device and reduce or prevent the driving device from being affected by external dust. On the other hand, the base can also be used as a mounting carrier for other components in the driving device. For example, it can be used to install infrared lenses, making the base more versatile. On the other hand, the base can also be used as the lower cover of the inner carrier assembly, avoiding the need to provide a separate lower cover for the inner carrier assembly, making the driving device more integrated and the structure more compact.

[0059] In another aspect, the present invention discloses a driving device comprising:

[0060] lens;

[0061] In the driving device described in any one of the above aspects, the lens is installed in the installation hole.

[0062] Since the driving device included in the camera module has better performance and a small and compact structure, when the driving device is applied to the camera module, the camera module can have better performance and a small and compact structure.

[0063] On another aspect, the present invention discloses an electronic device, comprising the camera module described in the other aspect above.

[0064] Since the camera module included in the electronic device has better performance and a small and compact structure, when the camera module is applied to the electronic device, the electronic device can have better performance and a small and compact structure.

[0065] Compared with the prior art, the present invention has the following beneficial effects:

[0066] Since the outer carrier assembly is ring-mounted on the outside of the inner carrier assembly, the inner carrier assembly includes a lens mount and a focusing coil, and the outer carrier assembly includes a magnet bracket and a common magnet, and since the focusing coil is fixed on the lens mount, the common magnet is arranged on the magnet bracket, and the common magnet corresponds to the position of the focusing coil, the focusing coil will be located in the magnetic field generated by the common magnet, and when the focusing coil moves axially along the mounting hole relative to the common magnet, the lens mount can move axially along the mounting hole relative to the magnet bracket.

[0067] In this case, when focusing is performed using the drive device, the focus coil can first be energized. After the focus coil is energized, according to the left-hand rule, an Ampere force will be generated between the focus coil and the shared magnet, thereby causing the focus coil to move axially relative to the shared magnet along the mounting hole. After the focus coil moves axially relative to the shared magnet along the mounting hole, the lens mount can be moved axially relative to the magnet holder along the mounting hole. Since the mounting hole of the lens mount is used to mount the lens, after the lens mount moves axially relative to the magnet holder along the mounting hole, the lens can be moved relative to the magnet holder along the axial direction Z of the mounting hole. At this point, the drive device achieves the focusing function.

[0068] Similarly, since the anti-shake assembly is ring-mounted on the outside of the outer carrier assembly, the anti-shake assembly includes a fixed bracket and an anti-shake coil, the anti-shake coil is fixed on the fixed bracket, and the anti-shake coil corresponds to the position of the common magnet. Therefore, the anti-shake coil will be located in the magnetic field generated by the common magnet, and when the common magnet rotates relative to the anti-shake coil around the preset axis relative to the fixed bracket, the outer carrier assembly and the inner carrier assembly can rotate together around the preset axis relative to the fixed bracket.

[0069] In this case, when anti-shake is performed by the driving device, the anti-shake coil can be energized first. After the anti-shake coil is energized, according to the left-hand rule, an interacting Ampere force will be generated between the anti-shake coil and the common magnet, and the common magnet can be made to rotate relative to the anti-shake coil around a preset axis relative to the fixed bracket. In this way, the anti-shake coil can drive the outer carrier assembly and the inner carrier assembly to rotate together around the preset axis relative to the fixed bracket. At this point, the driving device realizes the anti-shake function.

[0070] It can be seen from the above description that the focus coil and the anti-shake coil are both located in the magnetic field generated by the common magnet, and the shared magnet can enable the drive device to achieve the focus function and the anti-shake function. In layman's terms, the drive device provided in the embodiment of the present application does not need to be separately configured with a magnet for achieving the focus function and a magnet for achieving the anti-shake function. The shared magnet can enable the drive device to achieve the focus function and the anti-shake function. In this way, the problem of magnetic interference between the magnetic field generated by the magnet for achieving the focus function and the magnetic field generated by the magnet for achieving the anti-shake function can be avoided, thereby improving the performance of the drive device.

[0071] In addition, by sharing the magnets, space can be saved to a certain extent, making the drive device smaller and more compact.

[0072] In addition, since the anti-shake component is looped around the outside of the outer carrier component, the anti-shake component includes a fixed bracket and an anti-shake coil, the anti-shake coil is fixed on the fixed bracket, and the anti-shake coil corresponds to the position of the common magnet. It can be seen that in the embodiment of the present application, the fixed bracket is directly looped around the outside of the magnet bracket, while in the related technology, a shell is also provided on the outside of the magnet bracket. In other words, in the related technology, a shell is also provided between the fixed bracket and the magnet bracket, while the driving device provided in the embodiment of the present application can omit the shell, thereby making the driving device more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0074] Figure 1 This is a schematic structural diagram of a first driving device provided in an embodiment of the present application;

[0075] Figure 2 yes Figure 1 A schematic structural diagram of the driving device in another perspective;

[0076] Figure 3 yes Figure 1 An exploded view of the drive device in FIG.

[0077] Figure 4 yes Figure 1 Another exploded view of the drive unit in FIG.

[0078] Figure 5 is a structural schematic diagram of a second driving device provided in an embodiment of the present application;

[0079] Figure 6 1 is a schematic structural diagram of a third driving device provided in an embodiment of the present application;

[0080] Figure 7 yes Figure 6 An exploded view of the drive device in FIG.

[0081] Figure 8 1 is a schematic structural diagram of a fourth driving device provided in an embodiment of the present application;

[0082] Figure 9 is a structural schematic diagram of the fifth driving device provided in an embodiment of the present application;

[0083] Figure 10 Schematic diagram of the structure of a camera module provided in an embodiment of the present application;

[0084] Figure 11 This is a structural diagram of an electronic device provided in an embodiment of the present application.

[0085] Description of reference numerals:

[0086] 1-Inner carrier assembly; 2-Outer carrier assembly; 3-Anti-shake assembly; 4-First guide mechanism; 5-Limiting mechanism; 6-Second guide mechanism; 7-Elastic element; 8-Base; 9-Casing;

[0087] 10 - Mounting hole; 11 - Lens mount; 12 - Focus coil; 20 - Guide space; 21 - Magnet bracket; 22 - Common magnet; 31 - Fixed bracket; 32 - Anti-shake coil; 41 - Ball bearing; 51 - Limiting magnet; 52 - Magnetic element; 71 - First fixing portion; 72 - Elastic portion; 73 - Second fixing portion;

[0088] 111 - outer wall of lens mount; 211 - magnet sink; 212 - first magnet support surface; 213 - second magnet support surface; 214 - inner wall of magnet support; 215 - outer wall of magnet support; 311 - coil sink;

[0089] 1111-first guide groove; 2141-second guide groove;

[0090] Z-axial direction; X-preset axis; R1-first chamfer; R2-second chamfer; R3-third chamfer;

[0091] 100-Lens; 200-Drive device; 300-Camera module. DETAILED DESCRIPTION

[0092] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0093] In the present invention, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0094] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0095] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0096] Furthermore, the terms "first," "second," etc., are primarily used to distinguish between different devices, elements, or components (which may or may not be of the same type and configuration), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0097] The technical solution of the present application will be further described below with reference to specific embodiments and drawings.

[0098] Figure 1 is a structural diagram of a driving device provided in an embodiment of the present application, Figure 2 yes Figure 1 A schematic diagram of the structure of the drive device in another perspective, Figure 3 yes Figure 1 An exploded view of the drive unit in the.

[0099] See also Figure 1 、 Figure 2 and Figure 3The drive device includes an inner carrier assembly 1, an outer carrier assembly 2, and an anti-shake assembly 3. The inner carrier assembly 1 includes a lens mount 11 and a focus coil 12. The focus coil 12 is fixed to the lens mount 11. The lens mount 11 has a mounting hole 10 for mounting a lens. The outer carrier assembly 2 is sleeved around the outside of the inner carrier assembly 1 and includes a magnet bracket 21 and a shared magnet 22. The shared magnet 22 is mounted on the magnet bracket 21 and corresponds to the focus coil 12. The anti-shake assembly 3 is sleeved around the outside of the outer carrier assembly 2 and includes a fixed bracket 31 and an anti-shake coil 32. The anti-shake coil 32 is fixed to the fixed bracket 31 and corresponds to the shared magnet 22. The shared magnet 22 is used to generate a magnetic field. The focusing coil 12 and the anti-shake coil 32 are both located in the magnetic field. The anti-shake coil 32 is used to drive the outer carrier assembly 2 and the inner carrier assembly 1 to rotate relative to the fixed bracket 31 around a preset axis X when powered. The preset axis X is perpendicular to the axial direction Z of the mounting hole 10. The focusing coil 12 is used to drive the lens mount 11 to move relative to the magnet bracket 21 along the axial direction Z of the mounting hole 10 when powered.

[0100] In the embodiment of the present application, since the outer carrier component 2 is annularly sleeved on the outside of the inner carrier component 1, the inner carrier component 1 includes a lens mount 11 and a focusing coil 12, and the outer carrier component 2 includes a magnet bracket 21 and a common magnet 22. Since the focusing coil 12 is fixed on the lens mount 11, the common magnet 22 is arranged on the magnet bracket 21, and the common magnet 22 corresponds to the position of the focusing coil 12, therefore, the focusing coil 12 will be located in the magnetic field generated by the common magnet 22, and when the focusing coil 12 moves relative to the common magnet 22 along the axial direction Z of the mounting hole 10, the lens mount 11 can be made to move relative to the magnet bracket 21 along the axial direction Z of the mounting hole 10.

[0101] In this case, when focusing is performed using the drive device, the focus coil 12 can first be energized. After the focus coil 12 is energized, according to the left-hand rule, an Ampere force will be generated between the focus coil 12 and the common magnet 22, thereby causing the focus coil 12 to move relative to the common magnet 22 along the axial direction Z of the mounting hole 10. After the focus coil 12 moves relative to the common magnet 22 along the axial direction Z of the mounting hole 10, the lens mount 11 can be moved relative to the magnet holder 21 along the axial direction Z of the mounting hole 10. Since the mounting hole 10 of the lens mount 11 is used to mount a lens, after the lens mount 11 moves relative to the magnet holder 21 along the axial direction Z of the mounting hole 10, the lens can be moved relative to the magnet holder 21 along the axial direction Z of the mounting hole 10. At this point, the drive device has achieved the focusing function.

[0102] Similarly, since the anti-shake assembly 3 is looped around the outside of the outer carrier assembly 2, the anti-shake assembly 3 includes a fixed bracket 31 and an anti-shake coil 32. The anti-shake coil 32 is fixed to the fixed bracket 31, and the anti-shake coil 32 corresponds to the position of the common magnet 22. Therefore, the anti-shake coil 32 will be located in the magnetic field generated by the common magnet 22, and when the common magnet 22 rotates relative to the anti-shake coil 32 about the preset axis X relative to the fixed bracket 31, the outer carrier assembly 2 and the inner carrier assembly 1 can be caused to rotate together about the preset axis X relative to the fixed bracket 31.

[0103] In this case, when anti-shake is performed by the driving device, the anti-shake coil 32 can be energized first. After the anti-shake coil 32 is energized, according to the left-hand rule, an interacting Ampere force will be generated between the anti-shake coil 32 and the common magnet 22, and the common magnet 22 can be caused to rotate relative to the anti-shake coil 32 around the preset axis X relative to the fixed bracket 31. In this way, the anti-shake coil 32 can drive the outer carrier component 2 and the inner carrier component 1 to rotate together around the preset axis X relative to the fixed bracket 31. At this point, the driving device realizes the anti-shake function.

[0104] It can be seen from the above description that the focus coil 12 and the anti-shake coil 32 are both located in the magnetic field generated by the common magnet 22, and the drive device can realize the focus function and the anti-shake function through the common magnet 22. In layman's terms, the drive device provided in the embodiment of the present application does not need to be separately configured with a magnet for realizing the focus function and a magnet for realizing the anti-shake function. The drive device can realize the focus function and the anti-shake function through the common magnet 22. In this way, the problem of magnetic interference between the magnetic field generated by the magnet for realizing the focus function and the magnetic field generated by the magnet for realizing the anti-shake function can be avoided, thereby improving the performance of the drive device.

[0105] In addition, by sharing the magnet 22, space can be saved to a certain extent, making the driving device more compact and having a more compact structure.

[0106] In addition, since the anti-shake component 3 is looped around the outside of the outer carrier component 2, the anti-shake component 3 includes a fixed bracket 31 and an anti-shake coil 32, the anti-shake coil 32 is fixed on the fixed bracket 31, and the anti-shake coil 32 corresponds to the position of the common magnet 22. It can be seen that in the embodiment of the present application, the fixed bracket 31 is directly looped around the outside of the magnet bracket 21, while in the related technology, a shell is also provided on the outside of the magnet bracket 21. In other words, in the related technology, a shell is also provided between the fixed bracket 31 and the magnet bracket 21, while the driving device provided in the embodiment of the present application can omit the shell, thereby making the driving device more compact.

[0107] It should be noted that the above-mentioned anti-shake coil 32 drives the outer carrier component 2 and the inner carrier component 1 to rotate together around the preset axis X relative to the fixed bracket 31 when powered. This can be achieved in a variety of possible ways. In one possible implementation method, static friction between the outer carrier component 2 and the inner carrier component 1 can be used to enable the anti-shake coil 32 to drive the outer carrier component 2 and the inner carrier component 1 to rotate together around the preset axis X relative to the fixed bracket 31 when powered.

[0108] Specifically, assuming that there is static friction between the outer carrier component 2 and the inner carrier component 1, when the anti-shake coil 32 is energized, it can be understood that the outer carrier component 2 can rotate around the preset axis X relative to the fixed bracket 31. At this time, due to the static friction between the outer carrier component 2 and the inner carrier component 1, when the outer carrier component 2 rotates around the preset axis X relative to the fixed bracket 31, the inner carrier component 1 can rotate around the preset axis X relative to the fixed bracket 31 together with the outer carrier component 2. That is, the anti-shake coil 32 drives the outer carrier component 2 and the inner carrier component 1 to rotate together around the preset axis X relative to the fixed bracket 31 when energized.

[0109] Of course, other possible methods can also be used to drive the outer carrier assembly 2 and the inner carrier assembly 1 to rotate relative to the fixed bracket 31 around the preset axis X when the anti-shake coil 32 is energized. The embodiments of the present application will not be described in detail.

[0110] It should also be noted that the number of shared magnets 22 can be one, two, or any other number, and this embodiment of the application does not limit this. Furthermore, the number of focus coils 12 and the number of anti-shake coils 32 can correspond to the number of shared magnets 22, and this embodiment of the application does not limit this number either.

[0111] In order to make the driving device more compact, in some embodiments, see Figure 3 The magnet support 21 is provided with a magnet recess 211, and the shared magnet 22 is located in the magnet recess 211. By providing the magnet recess 211 on the magnet support 21 and arranging the shared magnet 22 in the magnet recess 211, at least a portion of the shared magnet 22 can be sunk in the magnet recess 211. In this way, the structure composed of the shared magnet 22 and the magnet support 21 can be made more compact, thereby making the entire drive device more compact.

[0112] In some embodiments, see Figure 3The magnet support 21 has a first magnet support surface 212 and a second magnet support surface 213 disposed opposite to each other, as well as a magnet support inner sidewall 214 and a magnet support outer sidewall 215 located between and connecting the first magnet support surface 212 and the second magnet support surface 213. The axial direction Z of the mounting hole 10 is perpendicular to the first magnet support surface 212 and / or the second magnet support surface 213. The magnet recess 211 is formed in a direction from the magnet support outer sidewall 215 to the magnet support inner sidewall 214.

[0113] In this embodiment, since the first magnet support surface 212 and the second magnet support surface 213 are disposed opposite each other, the magnet support inner sidewall 214 and the magnet support outer sidewall 215 are located between and connect the first magnet support surface 212 and the second magnet support surface 213. Therefore, the magnet support 21 has a ring-shaped structure. Since the axial direction Z of the mounting hole 10 is perpendicular to the first magnet support surface 212 and / or the second magnet support surface 213, the magnet support inner sidewall 214 corresponds to the inner annular surface of the ring-shaped structure, and the magnet support outer sidewall 215 corresponds to the outer annular surface of the ring-shaped structure.

[0114] Based on this, when the magnet recess 211 is formed in a direction from the magnet holder outer wall 215 toward the magnet holder inner wall 214, that is, the magnet recess 211 is formed in a direction from the outer annular surface toward the inner annular surface. As a result, when the shared magnet 22 is installed in the magnet recess 211, the distance between the shared magnet 22 and the anti-shake coil 32 can be smaller than the distance between the shared magnet 22 and the focus coil 12. In other words, the shared magnet 22 can be closer to the anti-shake coil 32 than to the focus coil 12.

[0115] As can be seen from the above description, the anti-shake coil 32 is used to drive the outer carrier assembly 2 and the inner carrier assembly 1 to rotate together about the predetermined axis X relative to the fixed bracket 31, while the focus coil 12 is used to drive the lens mount 11 to move relative to the magnet bracket 21 along the axial direction Z of the mounting hole 10. Therefore, the anti-shake coil 32 is required to provide a greater Ampere force than the focus coil 12. It is understood that the Ampere force is determined by the current flowing through the coil and the magnetic field generated by the shared magnet 22. Specifically, the Ampere force is directly proportional to both the current and the magnetic field. In this embodiment, by forming the magnet recess 211 in a direction from the magnet bracket outer wall 215 toward the magnet bracket inner wall 214, the shared magnet 22 is closer to the anti-shake coil 32 than to the focus coil 12. This, in turn, increases the magnetic field strength near the anti-shake coil 32, allowing the anti-shake coil 32 to generate a strong Ampere force even with low current, thereby saving energy and making the drive device more energy-efficient.

[0116] Among them, the magnet bracket 21 can be a "circular ring" structure, or a "rectangular ring" structure, etc., which is not limited in the embodiment of the present application.

[0117] In some embodiments, see Figure 3 The magnet bracket 21 has a "rectangular ring" structure, and the outer wall 215 of the magnet bracket has four edges parallel to the axial direction Z of the mounting hole 10. A first chamfer R1 is provided at two adjacent edges. There are two magnet grooves 211, and the two magnet grooves 211 are respectively provided at the first chamfer R1.

[0118] When the magnet holder 21 is in a "rectangular ring" structure, by setting a first chamfer R1 at two adjacent edges of the four edges of the outer wall 215 of the magnet holder, it can be understood that the first chamfer R1 needs to cut off the edges of the "rectangular ring" structure. After the edges of the "rectangular ring" structure are cut off, a larger surface can be formed, which provides convenience for setting the magnet sink 211. At the same time, it can also save space, thereby making the magnet holder 21 more compact, and then making the entire drive device more compact.

[0119] Of course, in other embodiments, the first chamfer R1 can also be set at two opposite edges. When the first chamfer R1 is set at two opposite edges, the magnet groove 211 will change accordingly with the position of the first chamfer R1, and the common magnet 22 will change accordingly with the position of the magnet groove 211. The embodiment of the present application is not limited to this.

[0120] It should be noted that the first chamfer R1 can be a rounded corner or a beveled corner, as long as it can save space. The embodiment of the present application does not limit the first chamfer R1.

[0121] In some embodiments, see Figure 3 The fixed bracket 31 is provided with a coil recess 311, and the anti-shake coil 32 is located in the coil recess 311. By providing the coil recess 311 on the fixed bracket 31 and arranging the anti-shake coil 32 in the coil recess 311, at least a portion of the anti-shake coil 32 is submerged in the coil recess 311. This makes the structure composed of the anti-shake coil 32 and the fixed bracket 31 more compact, thereby making the entire drive device more compact.

[0122] Further, in some embodiments, see Figure 3 The fixing bracket 31 has a second chamfer R2 corresponding to the first chamfer R1, and the coil sink 311 is provided at the second chamfer R2. Providing the second chamfer R2 on the fixing bracket 31 not only facilitates the installation of the coil sink 311 but also saves space, thereby making the fixing bracket 31 more compact and, in turn, the entire drive device more compact.

[0123] In some embodiments, see Figure 3 The lens mount 11 has a third chamfer R3 corresponding to the first chamfer R1. There are two focus coils 12, each disposed at the third chamfer R3. Providing the third chamfer R3 on the lens mount 11, corresponding to the first chamfer R1, not only facilitates the placement of the focus coils 12 but also saves space, making the lens mount 11 more compact and, by extension, the entire drive device, even more compact.

[0124] It should be noted that the aforementioned number of two focusing coils 12 is determined solely based on the fact that there are two shared magnets 22. It is understood that there is a one-to-one correspondence between the focusing coils 12, shared magnets 22, coil recesses 311, first chamfer R1, second chamfer R2, and third chamfer R3. Therefore, when the number of shared magnets 22 is changed to another number, the number of focusing coils 12, coil recesses 311, first chamfer R1, second chamfer R2, and third chamfer R3 can also vary accordingly. This embodiment of the present application does not impose any limitation on the number.

[0125] In order to make the lens holder 11 move relatively smoothly and steadily relative to the magnet holder 21 along the axial direction Z of the mounting hole 10, in some embodiments, see Figure 2 and Figure 3The drive device further includes a first guide mechanism 4, which is located between the lens mount 11 and the magnet support 21. The first guide mechanism 4 is used to guide the lens mount 11 to move relative to the magnet support 21 along the axial direction Z of the mounting hole 10. When the drive device further includes the first guide mechanism 4, the first guide mechanism 4 can serve as a guide, thereby ensuring smooth and stable movement of the lens mount 11 relative to the magnet support 21 along the axial direction Z of the mounting hole 10.

[0126] The first guide mechanism 4 can achieve the purpose of making the lens holder 11 move smoothly and steadily relative to the magnet holder 21 along the axial direction Z of the mounting hole 10 in a variety of possible ways. In the first possible implementation, see Figure 2 and Figure 3 The first guide mechanism 4 includes a ball bearing 41. The magnet holder 21 has a first magnet holder surface 212 and a second magnet holder surface 213 disposed opposite each other, as well as a magnet holder inner sidewall 214 and a magnet holder outer sidewall 215 located between and connecting the first magnet holder surface 212 and the second magnet holder surface 213. The axial direction Z of the mounting hole 10 is perpendicular to the first magnet holder surface 212 and / or the second magnet holder surface 213. The lens holder 11 has a lens holder outer sidewall 111 disposed opposite the magnet holder inner sidewall 214. A first guide groove 1111 is disposed on the lens holder outer sidewall 111. A second guide groove 2141 is disposed on the magnet holder inner sidewall 214 opposite the first guide groove 1111. The first guide groove 1111 and the second guide groove 2141 enclose a guide space 20, and the ball bearing 41 is located in the guide space 20.

[0127] In this implementation, since the ball 41 is located in the guide space 20 formed by the first guide groove 1111 and the second guide groove 2141, when the lens holder 11 moves relative to the magnet bracket 21 along the axial direction Z of the mounting hole 10, the ball 41 can play a guiding role, thereby making the lens holder 11 move relative to the magnet bracket 21 along the axial direction Z of the mounting hole 10 smoother and more stable.

[0128] When the first guide mechanism 4 includes the ball 41 , since the structure of the ball 41 is very simple, the manufacturing cost of the driving device can be reduced to a certain extent.

[0129] In a second possible implementation, the first guide mechanism 4 may include a slide rail assembly, which may include a track and a slider, wherein the slider is slidably disposed on the track. The track is fixed to the inner sidewall 214 of the magnet holder, and the slider is fixed to the outer sidewall 111 of the lens holder. Thus, when the lens holder 11 moves relative to the magnet holder 21 along the axial direction Z of the mounting hole 10, the slide rail assembly can serve as a guide, thereby ensuring smoother and more stable movement of the lens holder 11 relative to the magnet holder 21 along the axial direction Z of the mounting hole 10.

[0130] Of course, the first guide mechanism 4 can also achieve the purpose of making the lens holder 11 move smoothly and steadily relative to the magnet bracket 21 along the axial direction Z of the mounting hole 10 in other possible ways, which will not be described in detail in the embodiment of the present application.

[0131] In order to make the lens mount 11 move more smoothly and steadily relative to the magnet bracket 21 along the axial direction Z of the mounting hole 10, in some embodiments, the guiding direction of the guide space 20 is parallel to the axial direction Z of the mounting hole 10. In other words, the guiding direction of the guide space 20 is parallel to the movement direction of the lens mount 11 relative to the magnet bracket 21. In this way, the lens mount 11 can move more smoothly and steadily relative to the magnet bracket 21 along the axial direction Z of the mounting hole 10.

[0132] In some embodiments, see Figure 2 and Figure 4 The driving device further includes a limiting mechanism 5, which is used to limit the distance between the inner side wall 214 of the magnet holder and the outer side wall 111 of the lens holder, so that the ball 41 is clamped between the first guide groove 1111 and the second guide groove 2141. By providing the limiting mechanism 5, the distance between the inner side wall 214 of the magnet holder and the outer side wall 111 of the lens holder can be kept constant, thereby maintaining a stable size of the guide space 20 formed by the first guide groove 1111 and the second guide groove 2141. In layman's terms, by providing the limiting mechanism 5, the ball 41 can be stably clamped between the first guide groove 1111 and the second guide groove 2141, thereby preventing the distance between the first guide groove 1111 and the second guide groove 2141 from being too large, which could cause the ball 41 to wobble between the first guide groove 1111 and the second guide groove 2141.

[0133] The limiting mechanism 5 can clamp the ball 41 between the first guide groove 1111 and the second guide groove 2141 in a variety of ways. In one possible implementation, see Figure 2 and Figure 4The limiting mechanism 5 includes: a limiting magnet 51 and a magnetic element 52. The limiting magnet 51 is arranged on the magnet bracket 21, and the magnetic element 52 is arranged on the lens holder 11. The magnetic element 52 is arranged opposite to the limiting magnet 51, and the limiting magnet 51 and the magnetic element 52 attract each other to clamp the ball 41 between the first guide groove 1111 and the second guide groove 2141. That is, the limiting magnet 51 arranged on the magnet bracket 21 and the magnetic element 52 arranged on the lens holder 11 can generate mutual attraction, and this attraction makes the first guide groove 1111 and the second guide groove 2141 approach each other, thereby making the ball 41 clamped between the first guide groove 1111 and the second guide groove 2141. The implementation method is very simple, which can reduce the production cost of the driving device to a certain extent.

[0134] Of course, the magnetic element 52 can also be set on the magnet bracket 21, and the limiting magnet 51 can be set on the lens holder 11. In this way, the ball 41 can also be clamped between the first guide groove 1111 and the second guide groove 2141.

[0135] The magnetic element 52 may be a magnet or an iron sheet, etc., and the embodiment of the present application does not limit the magnetic element 52.

[0136] In another implementation method in which the ball 41 can be clamped between the first guide groove 1111 and the second guide groove 2141, the limiting mechanism 5 can include a U-shaped limiting clamp, which includes a first clamping arm, a connecting arm and a second clamping arm. The first clamping arm and the second clamping arm are connected to each other through the connecting arm. The first clamping arm is fixed on the lens holder 11, and the second clamping arm is slidably arranged on the outer wall 215 of the magnet bracket. Since the distance between the first clamping arm and the second clamping arm is fixed, the ball 41 can also be clamped between the first guide groove 1111 and the second guide groove 2141 through the U-shaped limiting clamp.

[0137] In some embodiments, when the limiting mechanism 5 includes a limiting magnet 51 and a magnetic attraction element 52, in order to avoid magnetic interference between the magnetic field of the limiting magnet 51 and the magnetic field of the common magnet 22, the limiting magnet 51 is disposed on a side of the magnet holder 21 away from the common magnet 22. In this way, the spacing between the limiting magnet 51 and the common magnet 22 can be relatively large, thereby avoiding magnetic interference between the magnetic field of the limiting magnet 51 and the magnetic field of the common magnet 22.

[0138] In order to make the magnet support 21 move smoothly and steadily relative to the fixing support 31 along the axial direction Z of the mounting hole 10, in some embodiments, see Figure 5The driving device further includes a second guide mechanism 6, which is located between the fixed bracket 31 and the magnet bracket 21. The second guide mechanism 6 is used to guide the magnet bracket 21 and the lens mount 11 to rotate relative to the fixed bracket 31 around the predetermined axis X. By providing the second guide mechanism 6, since the second guide mechanism 6 can guide the magnet bracket 21 and the lens mount 11 to rotate relative to the fixed bracket 31, the magnet bracket 21 and the lens mount 11 can rotate relative to the fixed bracket 31 smoothly and steadily.

[0139] The second guide mechanism 6 can use a variety of possible structures to make the magnet bracket 21 and the lens holder 11 rotate more smoothly and steadily relative to the fixed bracket 31. For example, the second guide mechanism 6 can be a rotating shaft or a ball or any structure that can make the magnet bracket 21 and the lens holder 11 rotate more smoothly and steadily relative to the fixed bracket 31. The embodiment of the present application does not limit the specific structure of the second guide mechanism 6.

[0140] In some embodiments, see Figure 6 and Figure 7 The driving device further includes an elastic element 7 having a first fixing portion 71, an elastic portion 72, and a second fixing portion 73. The first fixing portion 71 and the second fixing portion 73 are connected via the elastic portion 72. The first fixing portion 71 is fixed to the lens holder 11, and the second fixing portion 73 is disposed on the magnet holder 21 (the second fixing portion 73 may be directly connected to the magnet holder 21 or indirectly connected to the magnet holder 21 via other components). The focus coil 12 is configured to drive the lens holder 11 away from its initial position relative to the magnet holder 21 and to move along the axial direction Z of the mounting hole 10 when energized. The elastic portion 72 is configured to drive the lens holder 11 back to its initial position when the focus coil 12 loses power.

[0141] When the drive device further includes an elastic element 7, when focusing is performed using the drive device, the focus coil 12 is first energized. Once energized, the lens mount 11 can be moved relative to the magnet support 21 away from its initial position along the axial direction Z of the mounting hole 10. This movement of the lens mount 11 relative to the magnet support 21 can cause the relative position between the first fixing portion 71 and the second fixing portion 73 to change, thereby causing the elastic portion 72 to deform, placing the elastic portion 72 in a deformed state. After the focus coil 12 is de-energized, the elastic portion 72 is in a deformed state, and therefore, the elastic force of the elastic portion 72 can restore the lens mount 11 to its initial position.

[0142] By providing the elastic element 7 , the lens holder 11 can be automatically restored to its initial position, thereby saving energy consumption.

[0143] It should be noted that the elastic element 7 can be a shrapnel (shrapnel for voice coil motor), specifically, the elastic element 7 can be a metal shrapnel. When the elastic element 7 is a metal shrapnel, the elastic force is better and more durable, therefore, the entire driving device can be more reliable and have a longer service life.

[0144] In some embodiments, see Figure 7 and Figure 8 The driving device also includes a base 8, which is fixed to the end of the lens mount 11 close to the image side and is movably connected to the magnet bracket 21, and the second fixing portion 73 is connected to the base 8. By providing the base 8, on the one hand, the base 8 can protect the driving device and reduce or avoid the driving device being affected by external dust. On the other hand, the base 8 can also be used as a mounting carrier for other components in the driving device. For example, it can be used to install infrared lenses, making the functions of the base 8 more diverse. On the other hand, the base 8 can also be used as the lower cover of the inner carrier assembly 1, avoiding the need to set a lower cover for the inner carrier assembly 1 separately, so that the driving device is more integrated and the structure is more compact.

[0145] Among them, metal parts can be Insert Molded in the base 8. In this way, on the one hand, the strength of the base 8 can be made higher. On the other hand, the metal parts in the base 8 can be used as conductors. For example, the metal parts can be connected to the focusing coil 12 or the anti-shake coil 32. In this way, the focusing coil 12 or the anti-shake coil 3 can be powered by supplying power to the metal parts, which is very convenient and quick.

[0146] It should be noted that the base 8 can be movably connected to the magnet bracket 21 through an OIS (Optical Image Stabilization) motor. Specifically, the OIS motor may include a fixed part and a movable part, wherein the fixed part can be fixed on the magnet bracket 21, and the movable part can be fixed on the base 8. In this way, the base 8 and the magnet bracket 21 can be movably connected.

[0147] In some embodiments, the driving device also includes a shell 9, which is covered on the outside of the fixed bracket 31. By setting the shell 9, on the one hand, the driving device can be made stronger and more durable, and on the other hand, the driving device can be reduced or prevented from being contaminated by external dust.

[0148] In summary, in the embodiment of the present application, since the focus coil 12 and the anti-shake coil 32 are both located in the magnetic field generated by the common magnet 22, the drive device can realize the focus function and the anti-shake function through the common magnet 22. In layman's terms, the drive device provided in the embodiment of the present application does not need to be separately configured with a magnet for realizing the focus function and a magnet for realizing the anti-shake function. The drive device can realize the focus function and the anti-shake function through the common magnet 22. In this way, the problem of magnetic interference between the magnetic field generated by the magnet for realizing the focus function and the magnetic field generated by the magnet for realizing the anti-shake function can be avoided, thereby improving the performance of the drive device.

[0149] In addition, by sharing the magnet 22, space can be saved to a certain extent, making the driving device smaller and more compact.

[0150] In addition, since the anti-shake component 3 is looped around the outside of the outer carrier component 2, the anti-shake component 3 includes a fixed bracket 31 and an anti-shake coil 32, the anti-shake coil 32 is fixed on the fixed bracket 31, and the anti-shake coil 32 corresponds to the position of the common magnet 22. It can be seen that in the embodiment of the present application, the fixed bracket 31 is directly looped around the outside of the magnet bracket 21, while in the related technology, a shell is also provided on the outside of the magnet bracket 21. In other words, in the related technology, a shell is also provided between the fixed bracket 31 and the magnet bracket 21, while the driving device provided in the embodiment of the present application can omit the shell, thereby making the driving device more compact.

[0151] Figure 10 This is a structural diagram of a camera module provided in an embodiment of the present application, see Figure 9 and Figure 10 The camera module includes a lens 100 and a driving device 200 , and the lens 100 is installed in the mounting hole 10 .

[0152] Among them, the structure of the driving device 200 can be the same as the structure of any driving device 200 provided in the above embodiments, and can bring the same or similar beneficial effects, and the embodiments of this application will not be described in detail here.

[0153] In the embodiment of the present application, since the driving device 200 included in the camera module has better performance and a small and compact structure, when the driving device 200 is applied to the camera module, the camera module can have better performance and a small and compact structure.

[0154] Figure 11 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application, see Figure 11 , the electronic device includes a camera module 300.

[0155] Among them, the structure of the camera module 300 can be the same as the structure of the camera module 300 provided in the above embodiment, and can bring the same or similar beneficial effects, and the embodiments of this application will not be repeated here.

[0156] In the embodiment of the present application, since the camera module 300 included in the electronic device has better performance and a small and compact structure, when the camera module 300 is applied to the electronic device, the electronic device can have better performance and a small and compact structure.

[0157] The above is a detailed introduction to a driving device, a camera module and an electronic device disclosed in an embodiment of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the driving device, the camera module and the electronic device of the present invention and their core ideas. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A driving device, characterized in that: include: An inner carrier assembly, the inner carrier assembly comprising a lens mount and a focus coil, the focus coil being fixed to the lens mount, the lens mount having a mounting hole for mounting a lens; An outer carrier assembly, the outer carrier assembly being sleeved on the outer side of the inner carrier assembly, the outer carrier assembly comprising a magnet bracket and a common magnet, the common magnet being disposed on the magnet bracket and corresponding to the position of the focus coil; An anti-shake assembly, the anti-shake assembly being sleeved on the outside of the outer carrier assembly, the anti-shake assembly comprising a fixing bracket and an anti-shake coil, the anti-shake coil being fixed to the fixing bracket and corresponding to the position of the common magnet; The shared magnet is used to generate a magnetic field, the focus coil and the anti-shake coil are both located in the magnetic field, the anti-shake coil is used to drive the outer carrier assembly and the inner carrier assembly to rotate relative to the fixed bracket around a preset axis when powered, the preset axis being perpendicular to the axial direction of the mounting hole, and the focus coil is used to drive the lens mount to move relative to the magnet bracket along the axial direction of the mounting hole when powered; The distance between the common magnet and the anti-shake coil is smaller than the distance between the common magnet and the focus coil.

2. The driving device according to claim 1, characterized in that The magnet bracket is provided with a magnet sinking groove, and the common magnet is located in the magnet sinking groove.

3. The driving device according to claim 2, characterized in that The magnet support comprises a first magnet support surface and a second magnet support surface disposed opposite to each other, and a magnet support inner side wall and a magnet support outer side wall located between the first magnet support surface and the second magnet support surface and connecting the first magnet support surface and the second magnet support surface, and the axial direction of the mounting hole is perpendicular to the first magnet support surface and / or the second magnet support surface; The magnet sinking groove is formed by being recessed in a direction from the outer side wall of the magnet support to the inner side wall of the magnet support.

4. The driving device according to claim 3, characterized in that The magnet bracket has a "rectangular ring" structure, and the outer wall of the magnet bracket has four edges parallel to the axial direction of the mounting hole, and a first chamfer is provided at two adjacent edges. The number of the magnet grooves is two, and the two magnet grooves are respectively provided at the first chamfer.

5. The driving device according to claim 4, characterized in that The fixing bracket is provided with a coil sinking groove, and the anti-shake coil is located in the coil sinking groove.

6. The driving device according to claim 5, characterized in that The fixing bracket has a second chamfer corresponding to the first chamfer, and the coil sink is arranged at the second chamfer.

7. The driving device according to claim 4, characterized in that The lens mount has a third chamfer corresponding to the first chamfer. There are two focusing coils, and the two focusing coils are respectively arranged at the third chamfer.

8. The driving device according to any one of claims 1 to 7, characterized in that: The driving device further comprises: A first guide mechanism is located between the lens mount and the magnet bracket, and is used to guide the lens mount to move axially relative to the magnet bracket along the mounting hole.

9. The driving device according to claim 8, characterized in that The first guide mechanism includes a ball; The magnet support comprises a first magnet support surface and a second magnet support surface disposed opposite to each other, and a magnet support inner side wall and a magnet support outer side wall located between the first magnet support surface and the second magnet support surface and connecting the first magnet support surface and the second magnet support surface, and the axial direction of the mounting hole is perpendicular to the first magnet support surface and / or the second magnet support surface; The lens mount has an outer wall of the lens mount arranged opposite to the inner wall of the magnet bracket, a first guide groove is arranged on the outer wall of the lens mount, a second guide groove is arranged at a position of the inner wall of the magnet bracket opposite to the first guide groove, the first guide groove and the second guide groove enclose a guide space, and the ball is located in the guide space.

10. The driving device according to claim 9, characterized in that The guiding direction of the guiding space is parallel to the axial direction of the mounting hole.

11. The driving device according to claim 9, characterized in that The driving device further includes a limiting mechanism for limiting the distance between the inner wall of the magnet bracket and the outer wall of the lens holder so that the ball is clamped between the first guide groove and the second guide groove.

12. The driving device according to claim 11, characterized in that The limiting mechanism includes: a limiting magnet, the limiting magnet being disposed on one of the magnet bracket or the lens mount; A magnetic element is provided on the magnet bracket or the other of the lens holder, the magnetic element is arranged opposite to the limiting magnet, and the limiting magnet and the magnetic element are attracted to each other to clamp the ball between the first guide groove and the second guide groove.

13. The driving device according to claim 12, characterized in that The limiting magnet is arranged on a side of the magnet bracket away from the common magnet.

14. The driving device according to claim 1, characterized in that The driving device further includes: a second guide mechanism, which is located between the fixed bracket and the magnet bracket, and is used to guide the magnet bracket and the lens holder to rotate together around the preset axis relative to the fixed bracket.

15. The driving device according to any one of claims 1 to 7, characterized in that: The driving device further comprises: an elastic element, the elastic element comprising a first fixing portion, an elastic portion, and a second fixing portion, the first fixing portion and the second fixing portion being connected via the elastic portion, the first fixing portion being fixed to the lens mount, and the second fixing portion being disposed on the magnet bracket; The focusing coil is used to drive the lens mount to move away from the initial position relative to the magnet bracket along the axial direction of the mounting hole when energized, and the elastic part is used to drive the lens mount to return to the initial position when the focusing coil loses power.

16. The driving device according to claim 15, characterized in that The driving device further includes a base, which is fixed to one end of the lens mount close to the image side and is movably connected to the magnet bracket, and the second fixing portion is connected to the base.

17. A camera module, characterized in that: include: lens; The driving device according to any one of claims 1 to 16, wherein the lens is mounted in the mounting hole.

18. An electronic device, characterized in that: Including the camera module described in claim 17.

Images