Driving device, lens module and electronic equipment

Abstract

The utility model discloses an embodiment of driving device, camera lens module and electronic equipment, and the transmission mechanism of driving device includes crank and at least two connecting rods connected with crank, and the relative swing connection of crank and base is connected with a mobile lens seat every connecting rod, and the first drive mechanism drives the rotation of crank, and the multiple mobile lens seat is driven to move through the connecting rod of crank, not only is favorable to promote mechanism efficiency and reduce energy consumption under the premise of guaranteeing the miniaturization of camera lens module, but also is favorable to promote the synchronous movement precision of multiple movable lens group, promotes the accuracy and stability of focal length adjustment, and the camera lens module realizes greater focal length adjustment range.

Description

Technical Field

[0001] This utility model relates to the field of optical technology, and in particular to a driving device, a lens module, and an electronic device. Background Technology

[0002] With the promotion and popularization of digital imaging technology, camera modules are widely used in various types of devices. The rapid development of small mobile electronic devices (such as smartphones) has placed increasingly higher demands on the miniaturization and multi-zoom capabilities of camera modules. To achieve a large focal length adjustment range within a miniaturized configuration, some current camera modules employ a coil-magnet structure to drive the lens and achieve zoom. However, in the absence of power, the components of this drive mechanism can move relatively freely. Due to the lack of control over the moving parts, they are prone to collisions with other components, generating noise, and are susceptible to wear or failure during long-term use. To solve these problems, additional locking and braking devices are usually required, but this increases the structural complexity and manufacturing cost of the camera module. Utility Model Content

[0003] In view of this, one embodiment of the present invention provides a driving device, a lens module, and an electronic device, which is beneficial to the reliability and miniaturization of the driving device.

[0004] In a first aspect, one embodiment of the present invention provides a driving device, including a base, a movable lens mount, a transmission mechanism, and a first driving mechanism; the movable lens mounts are at least two and movably disposed on the base; the transmission mechanism includes a crank and at least two connecting rods connected to the crank, the crank being oscillatingly connected to the base, each connecting rod being connected to one of the movable lens mounts, the crank having a power input end, a first connection position, and a second connection position spaced apart from each other, the at least two connecting rods including a first connecting rod and a second connecting rod, the two ends of the first connecting rod being rotatably connected to the first connection position and one of the movable lens mounts respectively, the two ends of the second connecting rod being rotatably connected to the second connection position and another movable lens mount respectively; the first driving mechanism is connected to the power input end and configured to drive the crank to rotate, the crank driving the movable lens mount to move along a first axial direction through the connecting rods.

[0005] Furthermore, at least two of the movable lens mounts are located on the same side of the crank, the first movable lens mount is located on the side of the second movable lens mount away from the crank, the at least two movable lens mounts include a first movable lens mount and a second movable lens mount, and the distance between the first connection position and the swing axis of the crank is greater than the distance between the second connection position and the swing axis of the crank.

[0006] Furthermore, the line connecting the first connection point, the second connection point, and the swing axis of the crank forms a triangle.

[0007] Furthermore, the base has a connecting ear with an arcuate groove, the crank has a guide block disposed in the arcuate groove; the first drive mechanism includes a first magnet assembly and a first coil assembly, one of which is disposed at the power input end and the other at the connecting ear; the first drive mechanism is configured such that when the first coil assembly is supplied with current, the first coil assembly and the first magnet assembly interact electromagnetically to cause the crank to move along the arcuate groove.

[0008] Further, the first magnet assembly includes at least one first magnet, which is fixed to the power input end; the first coil assembly includes at least two first coils, which are arranged along the length direction of the arcuate groove; or, the first coil assembly includes at least one first coil, which is arranged along the arcuate groove, and the two opposite magnetic poles of the first magnet are arranged along the length direction of the arcuate groove.

[0009] Furthermore, the first drive mechanism includes a motor, the output end of which is connected to the power input end.

[0010] Furthermore, the driving device also includes a guide assembly disposed on the base, the guide assembly including a guide rod, the guide rod being parallel to the first axial direction; the movable lens mount has a first guide groove, and when the first driving mechanism drives the movable lens mount to move along the first axial direction through the transmission mechanism, the first guide groove slides along the surface of the guide rod.

[0011] Furthermore, the bottom of the movable lens mount has a third guide groove, and the guide assembly includes a first ball and a second guide groove. The second guide groove is disposed on the upper end surface of the base and is opposite to the third guide groove. The extension direction of the second guide groove is parallel to the first axial direction. The first ball is disposed in the third guide groove and moves along the second guide groove. The connecting rod is connected to the lower part of the side of the movable lens mount. The first guide groove is disposed on the side of the movable lens mount and is located above the connection position between the connecting rod and the movable lens mount. The third guide groove is away from the first guide groove and the connecting rod.

[0012] Furthermore, the driving device also includes a guide assembly disposed on the base. The bottom of the movable lens mount has a third guide groove. The guide assembly includes a first ball and a second guide groove. The second guide groove is disposed on the upper end surface of the base and is disposed opposite to the third guide groove. The extension direction of the second guide groove is parallel to the first axial direction. The first ball is disposed in the third guide groove and moves along the second guide groove.

[0013] Furthermore, at least one of the movable lens mounts is a fine-tuning lens mount, which includes a first carrier and a second carrier. The second carrier is movably disposed on the first carrier. The first carrier is connected to the transmission mechanism. The second carrier is configured to mount a movable lens assembly. The fine-tuning lens mount also includes a second drive mechanism, which is configured to drive the second carrier to move relative to the first carrier along the first axis.

[0014] Furthermore, the second drive mechanism includes a second magnet assembly and a second coil assembly, one of which is disposed on the first carrier and the other is disposed on the second carrier. The second drive mechanism is configured such that when the second coil assembly is supplied with current, the second coil assembly and the second magnet assembly interact electromagnetically to cause the second carrier to move relative to the first carrier along the first axis.

[0015] Furthermore, the second coil assembly is disposed on the first carrier, the second magnet assembly is disposed on the second carrier, the second coil assembly includes at least one second coil, the second magnet assembly includes a second magnet, the second coil and the second magnet are spaced apart, and the two opposite magnetic poles of the second magnet are arranged in a direction parallel to the first axis.

[0016] Furthermore, the first support body has a bottom plate and a side plate, the bottom plate is disposed opposite to the upper end surface of the base, the side plate extends from one end of the bottom plate in a direction away from the base, and the second support body is disposed in the space defined by the bottom plate and the side plate;

[0017] The base plate has at least one first groove on the side opposite to the second support body and the side plate has at least one first groove on the side opposite to the second support body. The extension direction of the first groove is parallel to the first axis. The second support body has a second groove opposite to the first groove. The fine-tuning lens mount also includes a plurality of second balls, which are supported between the first groove and the corresponding second groove.

[0018] Secondly, another embodiment of the present invention also provides a lens module, including the driving device as described in the first aspect, and at least two movable lens groups; each movable lens group is respectively disposed on a corresponding movable lens mount, and the at least two movable lens groups are coaxially arranged.

[0019] Furthermore, the lens module also includes a fixed lens group, which is fixed relative to the base. The fixed lens group is located on one side of the movable lens group and is configured to direct imaging light from the object being photographed to the movable lens group.

[0020] Furthermore, the lens module also includes a photosensitive component disposed on the base. The photosensitive component includes a photosensitive chip and a light-deflecting device. The photosensitive chip forms a predetermined angle with the light-emitting path of the movable lens group. The light-deflecting device is located on the light-emitting path of the movable lens group and deflects the light from the movable lens group to the photosensitive chip.

[0021] Thirdly, another embodiment of the present invention also provides an electronic device, including the lens module as described in the second aspect.

[0022] This utility model provides a driving device, a lens module, and an electronic device. The transmission mechanism of the driving device includes a crank and at least two connecting rods connected to the crank. The crank is oscillatingly connected to a base. Each connecting rod is connected to a movable lens mount. A first driving mechanism drives the crank to rotate, and the crank drives multiple movable lens mounts to move through the connecting rods. This not only improves the efficiency of the mechanism and reduces energy consumption while ensuring the miniaturization of the lens module, but also improves the synchronous movement accuracy of multiple movable lens groups, enhances the accuracy and stability of focus adjustment, and allows the lens module to achieve a wider focus adjustment range. Furthermore, by setting a guide component and a guide structure for the movable lens mount to cooperate in guiding the movable lens mount, the free movement range of the movable lens mount can be effectively limited, impact noise can be eliminated, and the reliability of the system can be improved. Attached Figure Description

[0023] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:

[0024] Figure 1 This is a three-dimensional structural schematic diagram of a driving device according to an embodiment of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the connection between the driving device and the movable lens group according to an embodiment of the present invention;

[0026] Figure 3This is a three-dimensional structural diagram of a lens module according to an embodiment of the present invention;

[0027] Figure 4 This is a three-dimensional structural schematic diagram of a lens module according to one embodiment of the present invention from another perspective;

[0028] Figure 5 This is a top view of a lens module according to an embodiment of the present invention;

[0029] Figure 6 This is a front view of a lens module according to an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the mechanism principle of the drive device according to one embodiment of the present invention. Figure 1 ;

[0031] Figure 8 This is a schematic diagram of the mechanism principle of the drive device according to one embodiment of the present invention. Figure 2 ;

[0032] Figure 9 This is a three-dimensional structural diagram of a lens module according to another embodiment of the present invention;

[0033] Figure 10 This is a partial cross-sectional view of the lens module in the CC plane according to another embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram showing the connection between the first drive mechanism and the transmission mechanism according to another embodiment of the present invention;

[0035] Figure 12 This is a schematic diagram of the internal structure of a fine-tuning lens mount according to an embodiment of the present invention;

[0036] Figure 13 This is a cross-sectional schematic diagram showing the connection between the driving device and the movable lens group according to one embodiment of the present invention;

[0037] Figure 14 This is an exploded structural diagram of a fine-tuning lens mount according to an embodiment of the present invention;

[0038] Figure 15 This is a cross-sectional view of the lens module in plane AA according to an embodiment of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] X1 - First axial direction; 10 - Base; 11 - Connecting ear; 111 - Arc groove;

[0041] 21-Guide rod; 22-First ball bearing; 23-Second guide groove;

[0042] 30-Moving lens mount; 30a-First moving lens mount; 30b-Second moving lens mount; 31-First guide groove; 32-Third guide groove; 33-First support body; 331-Base plate; 332-Side plate; 333-First slide groove; 34-Second support body; 341-Second slide groove; 35-Second drive mechanism; 351-Second magnet assembly; 352-Second coil assembly; 36-Second ball bearing;

[0043] 40 - Transmission mechanism; 41 - Crank; 411 - Power input end; 412 - First connection position; 413 - Second connection position; 414 - Guide block; 415 - Swing axis; 42 - Connecting rod; 42a - First connecting rod; 42b - Second connecting rod;

[0044] 50 - First drive mechanism; 51 - First magnet assembly; 511 - First magnet; 52 - First coil assembly; 521 - First coil; 53 - Motor;

[0045] 60-Modible lens group;

[0046] 70-Fixed lens group;

[0047] 80-Photosensitive component; 81-Photosensitive chip; 82-Light conversion device. Detailed Implementation

[0048] The present application is described below based on embodiments, but it is not limited to these embodiments. In the detailed description of the present application below, certain specific details are described in detail. Those skilled in the art can fully understand the present application without these details. To avoid obscuring the substance of the present application, well-known methods, processes, flows, elements, and circuits are not described in detail.

[0049] Furthermore, those skilled in the art should understand that the accompanying drawings provided herein are for illustrative purposes only, and the scale shown in the drawings is only one embodiment; other embodiments are not necessarily implemented to scale.

[0050] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0051] For ease of explanation, spatially related terms such as “inner,” “outer,” “below,” “below,” “lower,” “above,” “upper,” etc., are used herein to describe the relationship between one element or feature illustrated in the figure and another. It will be understood that spatially related terms may be intended to encompass different orientations of the device in use or operation besides those depicted in the figure. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially related descriptive terms used herein should be interpreted accordingly.

[0052] Unless the context explicitly requires it, words such as "including" or "contains" throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, meaning "including but not limited to".

[0053] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0054] This utility model embodiment provides a driving device that can be applied to lens modules. Figures 1-15 The structure of the drive unit is shown, in which Figure 15 The cross-sectional location shown is Figure 5 plane AA in Figure 12 and Figure 13 The cross-sectional location shown is Figure 5 BB plane in Figure 10 The cross-sectional location shown is Figure 9 The CC plane in [the context]. (Refer to...) Figure 1 The drive device includes a base 10, a movable lens mount 30, a transmission mechanism 40, and a first drive mechanism 50. For example... Figures 2-6 as well as Figure 9 , Figures 12-13 and Figure 15 As shown, the movable lens mount 30 supports the movable lens assembly 60. The photosensitive component 80 of the lens module is positioned on the light-emitting path of the movable lens assembly 60. Thus, the first drive mechanism 50 transmits power to the movable lens mount 30 via the transmission mechanism 40, causing the movable lens mount 30 to move along the first axis X1, changing the distance between the movable lens assembly 60 and the photosensitive component 80, thereby achieving zoom. The first axis X1 is parallel to the light-emitting path of the movable lens assembly 60.

[0055] The number of movable lens mounts 30 can be one or more. In this embodiment of the invention, there can be at least two movable lens mounts 30, arranged sequentially along the first axis X1. By adjusting the distance between each movable lens mount 30 and the photosensitive component 80, a larger zoom range can be achieved. The transmission mechanism 40 is connected to the multiple movable lens mounts 30 and can drive the multiple movable lens mounts 30 simultaneously, thereby achieving a faster zoom adjustment speed. In some embodiments, the transmission mechanism 40 includes a crank 41 and at least two connecting rods 42 connected to the crank 41. The crank 41 is oscillatingly connected to the base 10. One end of each connecting rod 42 is rotatably connected to the crank 41, and the other end is rotatably connected to a corresponding movable lens mount 30. The connection position of the connecting rod 42 and the crank 41 is offset from the swing axis 415 of the crank 41, so that the position of the connecting rod 42 can change with the swing angle of the crank 41. In this embodiment of the invention, refer to Figures 5-10 The swing axis 415 of crank 41 refers to the axis of crank 41 when it swings relative to base 10. It is easy to understand that there does not necessarily have to be a pivot at the position corresponding to the swing axis 415 of crank 41 to limit the swing trajectory of crank 41. Other methods can also be used to limit the trajectory of crank 41 when it swings relative to base 10.

[0056] The driving device may include a guide assembly disposed on the base 10. The movable lens mount 30 has a guide structure and is movably connected to the guide assembly through the guide structure. The guide structure and the guide assembly cooperate to restrict the movement direction of the movable lens mount 30 to the first axis X1. The movable lens mount 30 and the guide assembly can be regarded as a sliding pair. Figure 7 and Figure 8 This is a simplified schematic diagram of the drive mechanism, see reference. Figure 1 , Figure 7 and Figure 8 The transmission mechanism 40 and the movable lens mount 30 can form a multi-link mechanism, the plane of motion of which is parallel to the first axis X1. The crank 41 has a power input end 411, and the first drive mechanism 50 is connected to the power input end 411 and can drive the crank 41 to rotate. The crank 41 drives multiple movable lens mounts 30 to move along the first axis X1 via the connecting rod 42. This arrangement allows the movement of multiple movable lens mounts 30 to be achieved through a single first drive mechanism 50, resulting in a more efficient and compact overall structure. Furthermore, referring to… Figure 7 and Figure 8 The positions of the multiple movable lens mounts 30 are related to the swing angle of the crank 41. Figure 7 and Figure 8As the crank 41 is positioned at different angles, the relative position between the movable lens mount 30 and the photosensitive assembly 80 changes accordingly. By calculating and simulating the dimensions of each component in this multi-link mechanism, the specific mapping relationship between the positions of the multiple movable lens mounts 30 and the movable lens assembly 60 they support and the angle of the crank 41 can be determined. By controlling the angle of the crank 41, the position of the movable lens assembly 60 can be controlled, which helps to improve the accuracy and stability of focus adjustment.

[0057] In this embodiment of the invention, the movable lens mount 30 includes a first movable lens mount 30a and a second movable lens mount 30b sequentially arranged along a first axial direction X1. The crank 41 has a power input end 411, a first connecting position 412, and a second connecting position 413 spaced apart from each other. The connecting rod 42 includes a first connecting rod 42a and a second connecting rod 42b. The two ends of the first connecting rod 42a are rotatably connected to the first connecting position 412 and the first movable lens mount 30a, respectively, and the two ends of the second connecting rod 42b are rotatably connected to the second connecting position 413 and the second movable lens mount 30b, respectively. The movable lens mount 30 can be located on the same side of the crank 41, wherein, referring to… Figures 1-3 The first movable lens mount 30a is located on the side of the second movable lens mount 30b away from the crank 41. The distance between the first connecting position 412 and the swing axis 415 of the crank 41 is greater than the distance between the second connecting position 413 and the swing axis 415 of the crank 41. The length of the first connecting rod 42a is greater than that of the second connecting rod 42b. This design can effectively avoid mutual interference between the first connecting rod 42a and the second connecting rod 42b, and between the first movable lens mount 30a and the second movable lens mount 30b during movement. Preferably, the lines connecting the first connecting position 412, the second connecting position 413, and the swing axis 415 of the crank 41 form a triangle. This allows the movable lens mount 30 to have a larger range of movement under limited space, thereby achieving a larger focal length adjustment range.

[0058] In some embodiments, refer to Figures 1-6 The first drive mechanism 50 includes a motor 53, the output end of which is connected to the power input end 411, and the output end of the motor 53 can be fixed relative to the power input end 411, so that the crank 41 rotates as the motor 53 rotates. The base 10 can be provided with a protruding connecting ear 11, which has a connecting hole. A positioning post can be provided on the side of the power input end 411 opposite to the output end of the motor 53. The positioning post is inserted into the connecting hole and can rotate in the connecting hole to ensure the smooth movement of the crank 41.

[0059] In another embodiment, the first drive mechanism 50 may be electromagnetically driven. (See also...) Figure 9The base 10 has a connecting ear 11, which has an arc-shaped groove 111. The center of the arc-shaped groove 111 is substantially coincident with the swing axis 415 of the crank 41. The crank 41 has a guide block 414, which is disposed in the arc-shaped groove 111 and can move along the arc-shaped groove 111. (Refer to...) Figure 10 and Figure 11 The first drive mechanism 50 includes a first magnet assembly 51 and a first coil assembly 52. ​​The first magnet assembly 51 includes one or more first magnets 511, and the first coil assembly 52 includes one or more first coils 521. One of the first magnet assembly 51 and the first coil assembly 52 is located at the power input terminal 411, and the other is located at the connecting lug 11. The first drive mechanism 50 is configured such that when the first coil assembly 52 is supplied with current, the first coil assembly 52 and the first magnet assembly 51 interact electromagnetically to generate a force that causes the crank 41 to move along the arcuate groove 111.

[0060] In one embodiment, the first magnet assembly 51 includes one or more first magnets 511, which are fixed to the power input terminal 411. The first magnet 511 can be a unipolar magnet, or it can be a bipolar magnet with its two poles arranged radially along the arcuate groove 111. The first coil assembly 52 includes at least two first coils 521, for example, referring to... Figure 11 The first coil assembly 52 includes two first coils 521, which are arranged sequentially along the length of the arc groove 111. By passing a predetermined current through these first coils 521 to generate an electromagnetic field, the crank 41 connected to the first magnet assembly 51 can be driven to move. By configuring the current in each first coil 521, the crank 41 can be suspended at a predetermined position.

[0061] In another embodiment, the first coil assembly 52 includes at least one first coil 521, which may be arranged along the extension direction of the arcuate groove 111, and the two opposite magnetic poles of the first magnet 511 are arranged along the length direction of the arcuate groove 111.

[0062] It should be understood that the above-described first drive mechanism 50 is only a few feasible examples. Depending on the needs of the actual application, other forms of first drive mechanism 50 may also be used to drive the crank 41.

[0063] In this embodiment of the invention, the guide component and the guide structure cooperate to enable the movable lens mount 30 to move smoothly along the first axial direction X1, thereby ensuring that the movement of the movable lens assembly 60 is parallel to its light emission direction. In some embodiments, refer to Figures 1-6 and Figure 13The guiding assembly includes a guide rod 21, which is parallel to the first axial direction X1. The guide rod 21 can be fixed on the base 10, disposed on one side of the movable lens mount 30, and avoids the transmission mechanism 40. In one embodiment, the connecting rod 42 is connected to the lower part of the side of the movable lens mount 30, and the first guide groove 31 is disposed on the side of the movable lens mount 30 and located above the connection position between the connecting rod 42 and the movable lens mount 30. The guiding structure includes a first guide groove 31 disposed on the surface of the movable lens mount 30 opposite to the guide rod 21. When the first driving mechanism 50 drives the movable lens mount 30 to move along the first axial direction X1 through the transmission mechanism 40, the first guide groove 31 slides along the surface of the guide rod 21. The first guide groove 31 may include two first contact planes forming a predetermined angle, for example, the angle between the two first contact planes may be 90 degrees, and the two contact planes contact the guide rod 21 from different directions.

[0064] In some embodiments, refer to Figure 12 and Figure 13 The guiding structure includes a third guide groove 32 located at the bottom of the movable lens mount 30. The guiding assembly includes a first ball bearing 22 and a second guide groove 23. The second guide groove 23 is located on the upper surface of the base 10 and is opposite to the third guide groove 32. The extending direction of the second guide groove 23 is parallel to the first axial direction X1. The first ball bearing 22 is disposed in the third guide groove 32 and moves along the second guide groove 23. The first ball bearing 22 is supported between the third guide groove 32 and the second guide groove 23, allowing the movable lens mount 30 to be suspended above the base 10, reducing friction and thus improving the smoothness of the movement of the movable lens mount 30. As needed, one or more second guide grooves 23 can be provided, and one or more first ball bearings 22 can be placed in each guide groove to achieve stable guidance of the movable lens assembly.

[0065] In one embodiment, a guide rod 21 and a second guide groove 23 can be provided simultaneously. The connecting rod 42 is connected to the lower part of the side of the movable lens mount 30. The first guide groove 31 is provided on the side of the movable lens mount 30 and is located above the connection position between the connecting rod 42 and the movable lens mount 30. The third guide groove 32 is away from the first guide groove 31 and the connecting rod 42. In this way, the second guide groove 23 and the guide rod 21 can guide the movable lens mount 30 from both ends, which helps to ensure the smooth movement of the movable lens mount 30.

[0066] In some embodiments, at least one movable lens mount 30 may be a fine-tuning lens mount, as shown in the following figures. Figures 12-14 The fine-tuning lens mount includes a first support 33 and a second support 34. The second support 34 is movably disposed on the first support 33, and the direction of movement of the second support 34 relative to the first support 33 is parallel to the first axis X1. In this embodiment, referring to... Figures 12-14The first movable lens mount 30a is a fine-tuning lens mount. The fine-tuning lens mount also includes a second drive mechanism 35, which is configured to drive a second carrier 34 to move relative to the first carrier 33 along a first axis X1. A guide structure is provided on the first carrier 33, which is connected to the transmission mechanism 40. The second carrier 34 is used to mount the movable lens assembly 60. By setting at least one movable lens mount 30 as a fine-tuning lens mount, the second drive mechanism 35 and the first drive mechanism 50 can simultaneously move the movable lens assembly 60, thereby enabling rapid adjustment of the focal length.

[0067] In one embodiment, the first support 33 has a base plate 331 and a side plate 332. The base plate 331 is disposed opposite to the upper surface of the base 10, and the side plate 332 extends from one end of the base plate 331 away from the base 10, so that the first support 33 forms an L-shaped structure. The second support 34 is disposed in the space defined by the base plate 331 and the side plate 332. The side of the base plate 331 opposite to the second support 34 and the side of the side plate 332 opposite to the second support 34 each have at least one first groove 333. The extending direction of the first groove 333 is parallel to the first axial direction X1. The second support 34 has a second groove 341 opposite to the first groove 333. The fine-tuning lens mount also includes a plurality of second balls 36. The second balls 36 are supported between the first groove 333 and the corresponding second groove 341, which can realize the guiding function when the second support 34 moves relative to the first support 33, and help reduce friction and improve efficiency. In this embodiment, referring to Figures 12-14 A first groove 333 is provided on the base plate 331 and the side plate 332 respectively. The grooves on the base plate 331 and the side plate 332 are respectively located at the connection positions away from the base plate 331 and the side plate 332. In this way, a smaller number of second balls 36 can be used to achieve stable support and guidance for the second carrier 34, which is beneficial to the miniaturization of the drive device and the lens module.

[0068] In one embodiment, the second drive mechanism 35 includes a second magnet assembly 351 and a second coil assembly 352. The second magnet assembly 351 includes one or more second magnets, and the second coil assembly 352 includes one or more second coils. The second coils are spaced apart from the second magnets. One of the second magnet assembly 351 and the second coil assembly 352 is disposed on a first carrier 33, and the other is disposed on a second carrier 34. The second drive mechanism 35 is configured such that when a current is input to the second coil assembly 352, the second coil assembly 352 and the second magnet assembly 351 electromagnetically interact to generate a force on the second carrier 34 that moves relative to the first carrier 33 along a first axial direction X1. (Refer to...) Figures 12-14In one embodiment, a second coil assembly 352 is disposed on a first carrier 33, and a second magnet assembly 351 is disposed on a second carrier 34. The two opposite magnetic poles of the second magnet are arranged in a direction parallel to the first axial direction X1. When the second coil assembly 352 is energized, the magnetic field generated acts on the second magnet assembly 351, enabling the second carrier 34 to move relative to the first carrier 33. Since the first carrier 33 is connected to the connecting rod 42, its position is restricted by the positions of the first drive mechanism 50 and the crank 41. Therefore, the focal length can be controlled more precisely according to the states of the first drive mechanism 50 and the second drive mechanism 35.

[0069] Some embodiments of this utility model also relate to a lens module, see reference Figures 3-6 and Figure 15 The lens module includes the driving device described in at least some of the embodiments above, and includes at least two movable lens groups 60. Each movable lens mount 30 has a corresponding movable lens group 60, and the plurality of movable lens groups 60 are coaxially arranged. For example, the movable lens group 60 includes a first movable lens group and a second movable lens group, the first movable lens group being disposed on a first movable lens mount 30a, and the second movable lens group being disposed on a second movable lens mount 30b. Each movable lens group 60 may each include a lens barrel and a plurality of lenses disposed within the lens barrel, the lens barrel being mounted on the movable lens mount 30. For example, the movable lens mount 30 may include a mounting groove matching the shape of the lens barrel, and the mounting groove and the outer surface of the lens barrel may form a corresponding stepped structure, thereby achieving axial positioning between the movable lens group 60 and the movable lens mount 30.

[0070] In some embodiments, the lens module may further include one or more fixed lens groups 70, which are fixed relative to the base 10. The fixed lens group 70 is disposed on one side of the movable lens group 60, for example, on the side of the movable lens group 60 away from the photosensitive component 80, and is used to guide the imaging light from the object being photographed to the movable lens group 60.

[0071] The lens module also includes a photosensitive component 80 disposed on the base 10. In one embodiment, the photosensitive component 80 includes a photosensitive chip 81 and a light-deflecting device 82. The photosensitive chip 81 forms a predetermined angle with the light-emitting path, and the light-deflecting device 82 is located on the light-emitting path of the movable lens group 60. The light-deflecting device 82 may include a mirror or other device that forms a predetermined angle with the light-emitting path of the movable lens group 60 and the photosensitive chip 81, deflecting the light from the movable lens group 60 to the photosensitive chip 81. Alternatively, one or more light-deflecting devices 82 may be disposed on the light-incident path of the fixed lens group 70. By rationally arranging the light-deflecting devices 82, it is beneficial to reduce the size of the lens module in a specific direction for better application in corresponding electronic devices.

[0072] This utility model also relates to an electronic device that includes one or more lens modules as described in at least some of the above embodiments, enabling the electronic device to perform image acquisition functions. The electronic device can be a smartphone, smartwatch, tablet computer, or other electronic device requiring image acquisition capabilities.

[0073] This utility model embodiment provides a driving device, a lens module, and an electronic device. The transmission mechanism 40 of the driving device includes a crank 41 and at least two connecting rods 42 connected to the crank 41. The crank 41 is oscillatingly connected to the base 10. Each connecting rod 42 is connected to a movable lens mount 30. A first driving mechanism 50 drives the crank 41 to rotate, and the crank 41 drives multiple movable lens mounts 30 to move through the connecting rods 42. This not only improves the efficiency of the mechanism and reduces energy consumption while ensuring the miniaturization of the lens module, but also improves the synchronous movement accuracy of multiple movable lens groups 60, enhances the accuracy and stability of focus adjustment, and allows the lens module to achieve a larger focus adjustment range. In addition, by setting a guide component and a guide structure of the movable lens mount 30 to guide the movable lens mount 30, the free movement range of the movable lens mount 30 can be effectively limited, impact noise can be eliminated, and the reliability of the system can be improved.

[0074] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A driving device, characterized in that, include: Base; At least two movable lens mounts are movably mounted on the base; A transmission mechanism includes a crank and at least two connecting rods connected to the crank. The crank is oscillatingly connected to the base. Each connecting rod is connected to a movable lens mount. The crank has a power input end, a first connection position, and a second connection position that are spaced apart from each other. The at least two connecting rods include a first connecting rod and a second connecting rod. The two ends of the first connecting rod are rotatably connected to the first connection position and a movable lens mount, respectively. The two ends of the second connecting rod are rotatably connected to the second connection position and another movable lens mount, respectively. as well as A first drive mechanism is connected to the power input end and configured to drive the crank to rotate, the crank driving the movable lens mount to move along a first axis via the connecting rod.

2. The driving device according to claim 1, characterized in that, At least two of the movable lens mounts are located on the same side of the crank, and the at least two movable lens mounts include a first movable lens mount and a second movable lens mount. The first movable lens mount is located on the side of the second movable lens mount away from the crank, and the distance between the first connection position and the swing axis of the crank is greater than the distance between the second connection position and the swing axis of the crank.

3. The driving device according to claim 1 or 2, characterized in that, The line connecting the first connection point, the second connection point, and the swing axis of the crank forms a triangle.

4. The driving device according to claim 1, characterized in that, The base has a connecting ear with an arc-shaped groove, and the crank has a guide block disposed in the arc-shaped groove; The first drive mechanism includes a first magnet assembly and a first coil assembly, one of which is located at the power input end and the other at the connecting lug. The first drive mechanism is configured such that when the first coil assembly is supplied with current, the first coil assembly and the first magnet assembly interact electromagnetically to cause the crank to move along the arcuate groove.

5. The driving device according to claim 4, characterized in that, The first magnet assembly includes at least one first magnet, which is fixed to the power input end; The first coil assembly includes at least two first coils, which are arranged along the length of the arcuate groove; or The first coil assembly includes at least one first coil disposed along the arcuate groove, and two opposite magnetic poles of the first magnet are arranged along the length of the arcuate groove.

6. The driving device according to claim 1, characterized in that, The first drive mechanism includes a motor, and the output end of the motor is connected to the power input end.

7. The driving device according to claim 1, characterized in that, It also includes a guide assembly disposed on the base, the guide assembly including a guide rod, the guide rod being parallel to the first axis; The movable lens mount has a first guide groove. When the first drive mechanism drives the movable lens mount to move along the first axis through the transmission mechanism, the first guide groove slides along the surface of the guide rod.

8. The driving device according to claim 7, characterized in that, The bottom of the movable lens mount has a third guide groove. The guide assembly includes a first ball and a second guide groove. The second guide groove is located on the upper end face of the base and is opposite to the third guide groove. The extension direction of the second guide groove is parallel to the first axis. The first ball is located in the third guide groove and moves along the second guide groove. The connecting rod is connected to the lower part of the side of the movable lens mount. The first guide groove is located on the side of the movable lens mount and above the connection position between the connecting rod and the movable lens mount. The third guide groove is away from the first guide groove and the connecting rod.

9. The driving device according to claim 1, characterized in that, It also includes a guide assembly disposed on the base. The bottom of the movable lens mount has a third guide groove. The guide assembly includes a first ball and a second guide groove. The second guide groove is disposed on the upper end surface of the base and is disposed opposite to the third guide groove. The extension direction of the second guide groove is parallel to the first axial direction. The first ball is disposed in the third guide groove and moves along the second guide groove.

10. The driving device according to claim 1, characterized in that, At least one of the movable lens mounts is a fine-tuning lens mount, which includes a first carrier and a second carrier. The second carrier is movably disposed on the first carrier. The first carrier is connected to the transmission mechanism. The second carrier is configured to mount a movable lens assembly. The fine-tuning lens mount also includes a second drive mechanism configured to drive the second carrier to move relative to the first carrier along the first axis.

11. The driving device according to claim 10, characterized in that, The second drive mechanism includes a second magnet assembly and a second coil assembly, one of which is disposed on the first carrier and the other is disposed on the second carrier. The second drive mechanism is configured such that when the second coil assembly is supplied with current, the second coil assembly and the second magnet assembly interact electromagnetically to cause the second carrier to move relative to the first carrier along the first axis.

12. The driving device according to claim 11, characterized in that, The second coil assembly is disposed on the first carrier, and the second magnet assembly is disposed on the second carrier. The second coil assembly includes at least one second coil, and the second magnet assembly includes a second magnet. The second coil and the second magnet are spaced apart, and the two opposite magnetic poles of the second magnet are arranged in a direction parallel to the first axis.

13. The driving device according to claim 10, characterized in that, The first support has a base plate and a side plate. The base plate is disposed opposite to the upper surface of the base. The side plate extends from one end of the base plate in a direction away from the base. The second support is disposed in the space defined by the base plate and the side plate. The base plate has at least one first groove on the side opposite to the second support body and the side plate has at least one first groove on the side opposite to the second support body. The extension direction of the first groove is parallel to the first axis. The second support body has a second groove opposite to the first groove. The fine-tuning lens mount also includes a plurality of second balls, which are supported between the first groove and the corresponding second groove.

14. A lens module, characterized in that, include: The drive device as described in any one of claims 1-13; as well as At least two movable lens groups, each movable lens group is respectively mounted on a corresponding movable lens mount, and the at least two movable lens groups are coaxially arranged.

15. The lens module according to claim 14, characterized in that, Also includes: A fixed lens assembly is fixed relative to the base and is located on one side of the movable lens assembly. The fixed lens assembly is configured to direct imaging light from the object being photographed to the movable lens assembly.

16. The lens module according to claim 14, characterized in that, Also includes: A photosensitive component is disposed on the base. The photosensitive component includes a photosensitive chip and a light deflector. The photosensitive chip forms a predetermined angle with the light output path of the movable lens group. The light deflector is located on the light output path of the movable lens group and deflects the light from the movable lens group to the photosensitive chip.

17. An electronic device, characterized in that, Includes the lens module as described in any one of claims 14-16.

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