Optical lens driving device, camera module and electronic equipment

Abstract

The utility model provides an optical lens driving device, a camera module and electronic equipment. The optical lens driving device comprises a base assembly which is provided with an accommodating cavity and is provided with a first side wall and a second side wall which are oppositely arranged; the lens supporting body is movably arranged in the accommodating cavity; the driving coil is arranged on the first side wall; the driving magnet is arranged on the lens supporting body corresponding to the driving coil; the first guide structure is arranged on one side, close to the first side wall, of the bottom surface of the base assembly body; the first magnetic piece is arranged on the first side wall corresponding to the driving magnet; at least one part of the magnetic attraction assembly is arranged on the side, close to the second side wall, of the bottom face of the base assembly, and at least the other part of the magnetic attraction assembly is correspondingly arranged on the side, close to the second side wall, of the bottom face of the lens supporting body. The optical lens driving device solves the problem that an optical lens driving device in the prior art is poor in use performance.

Description

Technical Field

[0001] The utility model relates to the field of camera devices, and more particularly to an optical lens driving device, a camera module and an electronic device. Background Art

[0002] With the rapid development and iteration of electronic devices, people hope that the shooting performance of electronic devices (such as mobile phones) will be better and better. The camera module of an electronic device needs to drive the optical lens to move during shooting to achieve focusing. Under the development trend of the thinning and miniaturization of electronic devices, the utilization of the internal space of the current optical lens driving device has reached its limit. Under the requirement of meeting the thrust, the single-side drive of the VCM motor can further reduce the internal space and at the same time reduce the electromagnetic interference of the camera module. However, the single-side drive is limited by the magnetic field distribution, resulting in a component offset of the driving force, and the moving carrier will have a problem of twisting and jamming, resulting in poor driving accuracy of the optical axis focusing.

[0003] In addition, the guiding structure for driving the optical lens to move in the current technology also has problems such as large installation and fixation difficulties, difficult to guarantee the assembly accuracy, large frictional resistance to be overcome during driving, high power consumption, and poor structural reliability.

[0004] Therefore, there is a problem of poor performance of the optical lens driving device in the prior art. Summary of the Utility Model

[0005] The main purpose of the present utility model is to provide an optical lens driving device, a camera module and an electronic device to solve the problem of poor performance of the optical lens driving device in the prior art.

[0006] To achieve the above object, according to one aspect of the present utility model, there is provided an optical lens driving device, including: a base assembly having a receiving cavity and having a first side wall and a second side wall disposed opposite to each other; a lens support body movably disposed in the receiving cavity; a driving coil disposed on the first side wall; a driving magnet disposed on the lens support body corresponding to the driving coil; a first guiding structure disposed on the bottom surface of the base assembly body near the first side wall, and at least a part of the first guiding structure can generate a magnetic force with the driving magnet; a first magnetic attracting sheet disposed on the first side wall corresponding to the driving magnet; a magnetic attracting assembly, at least a part of the magnetic attracting assembly is disposed on the bottom surface of the base assembly body near the second side wall, and at least another part of the magnetic attracting assembly is disposed on the bottom surface of the lens support body near the second side wall.

[0007] Further, the distance from the first magnetic attracting sheet to the top end of the driving magnet is greater than the distance from the first magnetic attracting sheet to the bottom end of the driving magnet.

[0008] Further, the first guiding structure is a guiding sliding shaft, the axial direction of the guiding sliding shaft is parallel to the moving direction of the lens support body, and the guiding sliding shaft is made of a magnetic material and can generate a magnetic force with the driving magnet.

[0009] Further, a guiding sliding groove is provided corresponding to the guiding sliding shaft on the side of the bottom surface of the base assembly close to the first side wall. At least a part of the guiding sliding shaft is fixedly arranged in the guiding sliding groove, and at least another part of the guiding sliding shaft protrudes from the guiding sliding groove and is in sliding contact with the bottom surface of the lens support body.

[0010] Further, the first guiding structure includes: guiding balls. There are at least two guiding balls, and the two guiding balls are arranged at intervals in the moving direction of the lens support body between the base assembly and the lens support body, and guiding grooves are respectively provided on the lens support body and the base assembly corresponding to the guiding balls; a third magnetic attracting piece, and the third magnetic attracting piece is embedded in the bottom surface of the base assembly.

[0011] Further, the optical lens driving device further includes at least one ball, and the ball is arranged on one side of the lens support body facing the first side wall, and the ball is arranged close to the top end of the lens support body.

[0012] Further, when there is one ball, the distances from the ball to both ends of the driving magnet in the moving direction of the lens support body are the same; when there are at least two balls, at least one ball is respectively arranged at both ends of the driving magnet in the moving direction of the lens support body.

[0013] Further, at least one first installation groove is provided on the lens support body corresponding to the ball, at least one ball is respectively arranged in each first installation groove, at least a part of the ball is movably arranged in the first installation groove, and at least another part of the ball protrudes from the first installation groove and can roll along the first side wall.

[0014] Further, the magnetic force between the driving magnet and the first guiding structure is greater than the magnetic force between the part of the magnetic attracting assembly located on the base assembly and the part of the magnetic attracting assembly located on the lens support body.

[0015] Further, the magnetic attracting assembly includes: an attracting magnet, and the attracting magnet is arranged on one side of the bottom surface of the lens support body close to the second side wall; a second magnetic attracting piece, and the second magnetic attracting piece is arranged on one side of the bottom surface of the base assembly close to the second side wall corresponding to the attracting magnet.

[0016] Further, a receiving groove is provided on the base assembly corresponding to the second magnetic attracting piece, and there are mutually cooperating limiting protrusions and limiting notches between the two ends in the length direction of the second magnetic attracting piece and the receiving groove.

[0017] Further, the optical lens driving device further includes a second support structure, the second support structure is movably disposed on the lens support body corresponding to the second magnetic attraction piece, and in the moving direction of the lens support body, the second support structure and the adsorption magnet are spaced apart.

[0018] Further, the second support structure is a roller, the axial direction of the roller is perpendicular to the moving direction of the lens support body, and the lens support body is provided with a second installation groove corresponding to the roller, at least a part of the roller is movably disposed in the second installation groove, and at least another part of the roller protrudes from the second installation groove and is in rolling contact with the second magnetic attraction piece.

[0019] Further, the optical lens driving device further includes: a first embedded steel sheet, at least a part of the first embedded steel sheet is embedded in the base assembly, the first embedded steel sheet is U-shaped and includes a first section, a second section and a third section connected in sequence, at least a part of the first section is embedded in the first side wall, at least a part of the second section is embedded in the bottom surface of the base assembly, and at least a part of the third section is embedded in the second side wall; and / or a second embedded steel sheet, at least a part of the second embedded steel sheet is embedded in the bottom surface of the lens support body.

[0020] Further, the optical lens driving device further includes a light shielding sheet, a vertical plate is provided on the light-emitting side of the base assembly corresponding to the lens support body, the vertical plate is respectively connected to the first side wall and the second side wall, and the light shielding sheet is disposed on the vertical plate.

[0021] According to another aspect of the present invention, a camera module is provided, including the above-mentioned optical lens driving device.

[0022] According to another aspect of the present invention, an electronic device is provided, including the above-mentioned camera module.

[0023] Applying the technical solution of the present invention, the optical lens driving device in the present application includes a base assembly, a lens support body, a driving coil, a driving magnet, a first guiding structure, a first magnetic attraction piece and a magnetic attraction assembly. The base assembly has a receiving cavity, and the base assembly has a first side wall and a second side wall disposed opposite to each other; the lens support body is movably disposed in the receiving cavity; the driving coil is disposed on the first side wall; the driving magnet is disposed on the lens support body corresponding to the driving coil; the first guiding structure is disposed on one side of the bottom surface of the base assembly close to the first side wall, and at least a part of the first guiding structure can generate a magnetic force with the driving magnet; the first magnetic attraction piece is disposed on the first side wall corresponding to the driving magnet; at least a part of the magnetic attraction assembly is disposed on one side of the bottom surface of the base assembly close to the second side wall, and at least another part of the magnetic attraction assembly is disposed on one side of the bottom surface of the lens support body close to the second side wall.

[0024] When using the optical lens driving device in this application, after the driving coil is energized, since the driving magnet is provided on the lens support, the lens support can move in a preset direction under the interaction of the driving coil and the driving magnet. Moreover, since the driving coil is fixedly arranged on the base assembly and does not move, when the lens support moves to different positions, the relative position between the driving magnet and the driving coil changes. At this time, the direction of the force acting between the driving magnet and the driving coil on the lens support changes, so the lens support will have problems of motion distortion and jamming. However, since the optical lens driving device in this application also has a first magnetic attraction piece and a magnetic attraction assembly, and the first magnetic attraction piece can interact with the driving magnet to generate a force, and at least a part of the first guiding structure can generate a magnetic force with the driving magnet, and the parts of the magnetic attraction assembly located on the lens support and on the base assembly can interact with each other to generate a force. In addition, since the magnetic attraction assembly is arranged close to the second side wall, the lens support can be attached to the first guiding structure under the combined action of the forces of the first magnetic attraction piece and the driving magnet, the force between the first guiding structure and the driving magnet, and the force of the magnetic attraction assembly. At the same time, the problem of motion distortion and jamming of the lens support can also be solved. At the same time, by setting that at least a part of the first guiding structure can generate a magnetic force with the driving magnet, the contact between the lens support and the first guiding structure can be made more stable, thereby improving the optical lens driving device. Therefore, the optical lens driving device in this application effectively solves the problem of poor performance of the optical lens driving device in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The schematic diagrams in the specification, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0026] Figure 1 shows a schematic structural diagram of an optical lens driving device according to a specific embodiment of the present utility model;

[0027] Figure 2 shows Figure 1 an exploded view of the optical lens driving device in

[0028] Figure 3 shows Figure 1 a schematic diagram of the positional relationship among the base assembly, the first guiding structure, and the second magnetic attraction piece of the optical lens driving device in

[0029] Figure 4 shows Figure 1 a schematic diagram of the positional relationship among the base assembly, the driving coil, and the first magnetic attraction piece of the optical lens driving device in

[0030] Figure 5 shows the Figure 1 schematic diagram of the positional relationship among the base assembly, lens support, first guiding structure, and second supporting structure of the optical lens driving device in

[0031] Figure 6 shows the Figure 1 schematic diagram of the structure of the base assembly of the optical lens driving device in

[0032] Figure 7 shows the Figure 1 schematic diagram of the positional relationship among the lens support, driving magnet, ball, and adsorption magnet of the optical lens driving device in

[0033] Figure 8 shows the force diagram and magnetic field line simulation diagram of the lens support when the driving coil of the optical lens driving device in a specific embodiment of the present application is opposite to one end of the driving magnet;

[0034] Figure 9 shows the force diagram and magnetic field line simulation diagram of the lens support when the driving coil of the optical lens driving device in a specific embodiment of the present application is opposite to the middle position of the driving magnet;

[0035] Figure 10 shows the force diagram and magnetic field line simulation diagram of the lens support when the driving coil of the optical lens driving device in a specific embodiment of the present application is opposite to the other end of the driving magnet;

[0036] Figure 11 shows the Figures 8 - 10 lateral offset force variation diagram of the lens support in

[0037] Figure 12 shows the force diagram of the lens support under the action of the driving magnet and the first magnetic attraction piece in a specific embodiment of the present application;

[0038] Figure 13 shows the Figure 1 force diagram of the optical lens driving device in the downward posture of the lens support in

[0039] Among them, the above-mentioned drawings include the following reference numerals:

[0040] 10. Base assembly; 11. First side wall; 12. Second side wall; 13. Guide chute; 14. First embedded steel sheet; 15. Vertical plate; 20. Lens support; 21. First mounting groove; 22. Second mounting groove; 23. Second embedded steel sheet; 30. Driving coil; 40. Driving magnet; 50. First guiding structure; 60. First magnetic attracting sheet; 70. Magnetic attracting assembly; 71. Adsorption magnet; 72. Second magnetic attracting sheet; 721. Limiting projection; 722. Limiting notch; 80. Ball; 90. Second supporting structure; 100. Light-shielding sheet. Detailed implementation manners

[0041] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present invention in detail with reference to the drawings and in combination with the embodiments.

[0042] It should be pointed out that, unless otherwise specified, all the technical and scientific terms used in the present application have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0043] In the present invention, without contrary description, the orientation terms such as "upper, lower, top, bottom" are generally in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions of the components themselves; similarly, for the convenience of understanding and description, "inner, outer" refer to the inner and outer of the contours of the components themselves, but the above orientation terms are not used to limit the present invention.

[0044] In order to solve the problem of poor performance of the optical lens driving device in the prior art, the present application provides an optical lens driving device, a camera module and an electronic device.

[0045] Moreover, the electronic device in the present application has a camera module, and the camera module in the present application has the following optical lens driving device. In the present application, the electronic device generally refers to a mobile terminal such as a mobile phone or a notebook computer with photographing and video recording functions.

[0046] It should also be pointed out that the optical lens driving device in the present application is generally applied to a periscope lens, and the optical lens driving device generally works with a periscope prism.

[0047] Such as Figures 1 to 7As shown in the figure, the optical lens driving device in the present application includes a base assembly 10, a lens support 20, a driving coil 30, a driving magnet 40, a first guiding structure 50, a first magnetic attraction sheet 60, and a magnetic attraction assembly 70. The base assembly 10 has a receiving cavity, and the base assembly 10 has a first side wall 11 and a second side wall 12 arranged oppositely; the lens support 20 is movably arranged in the receiving cavity; the driving coil 30 is arranged on the first side wall 11; the driving magnet 40 is arranged on the lens support 20 corresponding to the driving coil 30; the first guiding structure 50 is arranged on one side of the bottom surface of the base assembly 10 close to the first side wall 11, and at least a part of the first guiding structure 50 can generate a magnetic force with the driving magnet 40; the first magnetic attraction sheet 60 is arranged on the first side wall 11 corresponding to the driving magnet 40; at least a part of the magnetic attraction assembly 70 is arranged on one side of the bottom surface of the base assembly 10 close to the second side wall 12, and at least another part of the magnetic attraction assembly 70 is arranged on one side of the bottom surface of the lens support 20 close to the second side wall 12.

[0048] When the optical lens driving device in the present application is used, after the driving coil 30 is powered on, since the driving magnet 40 is arranged on the lens support 20, the lens support 20 can move in a preset direction under the interaction of the driving coil 30 and the driving magnet 40. And, since the driving coil 30 is fixedly arranged on the base assembly 10 and does not move, when the lens support 20 moves to different positions, the relative position between the driving magnet 40 and the driving coil 30 will change. At this time, the direction of the force acting on the lens support 20 between the driving magnet 40 and the driving coil 30 changes, so the lens support 20 will have problems such as movement distortion and jamming at this time. However, since the optical lens driving device in the present application also has the first magnetic attraction sheet 60 and the magnetic attraction assembly 70, and the first magnetic attraction sheet 60 can interact with the driving magnet 40 to generate a force, and at least a part of the first guiding structure 50 can generate a magnetic force with the driving magnet 40, and the part of the magnetic attraction assembly 70 located on the lens support 20 and the part located on the base assembly 10 can interact with each other to generate a force. In addition, since the magnetic attraction assembly 70 is arranged close to the second side wall 12, the lens support 20 can be attached to the first guiding structure 50 under the combined action of the forces of the first magnetic attraction sheet 60 and the driving magnet 40, the force between the first guiding structure 50 and the driving magnet 40, and the force of the magnetic attraction assembly 70, and at the same time, the problem of movement distortion and jamming of the lens support 20 can also be solved. Therefore, the optical lens driving device in the present application effectively solves the problem of poor performance of the optical lens driving device in the prior art.

[0049] It should be noted that in this application, the magnetic force between the driving magnet 40 and the first guiding structure 50 is greater than the magnetic force between the part of the magnetic attraction assembly 70 located on the base assembly 10 and the part of the magnetic attraction assembly 70 located on the lens support 20. The purpose of this setting is to ensure the contact effect between the lens support 20 and the first guiding structure, and further ensure the guiding effect of the first guiding structure 50 on the lens support 20, so as to prevent the lens support from deviating from the preset movement path during the movement process.

[0050] As Figures 8 to 11 shown, Figures 8 to 11 The figures respectively show the force conditions of the lens support 20 and the base assembly 10 only under the action of the driving magnet 40 and the driving coil 30 when the lens support 20 moves to different positions relative to the base assembly 10, and the schematic diagram of the magnetic force lines during the movement of the driving magnet 40 relative to the driving coil 30. And, in the figure, the vertical direction is the optical axis direction. Among them, F3 is the thrust force, F3x is the axial driving force of the lens support 20, F3Y is the lateral offset force of the lens support 20, F1 is the axial driving force of the lens support 20, F2 is the thrust force, F2x is the axial driving force of the lens support 20, and F2Y is the lateral offset force of the lens support 20. And in this application, setting the first magnetic attraction piece 60 and making the first magnetic attraction piece 60 interact with the driving magnet 40 can effectively cancel F2Y. And, F1', F2', F3' are the force directions of the driving coil 30. Since the driving coil 30 is fixed and the driving magnet 40 moves, according to the action and reaction forces, F1, F2, F3 are the force / movement directions of the magnet.

[0051] In this application, the movement direction of the lens support 20 is generally the optical axis direction of the lens on the lens support 20, and the movement of the lens support 20 drives the lens to achieve the focusing movement.

[0052] Specifically, the distance from the first magnetic attraction piece 60 to the top end of the driving magnet 40 is greater than the distance from the first magnetic attraction piece 60 to the bottom end of the driving magnet 40. In this application, if it is assumed that the movement direction of the lens support 20 is the horizontal direction, then in the vertical direction, the first magnetic attraction piece 60 is located below half of the height of the driving magnet 40, or in other words, the first magnetic attraction piece 60 is arranged corresponding to the lower half of the driving magnet 40. By setting like this, it can be ensured that the lens support 20 can fit more stably with the first guiding structure 50 under the reasonable action of the first magnetic attraction piece 60, the driving magnet 40 and the magnetic attraction assembly 70. And, by setting like this, it can also be avoided that the first magnetic attraction piece 60 and the driving magnet 40 generate a force that makes the lens support 20 move away from the first guiding structure 50. Therefore, in this application, by setting like this, the use performance of the optical lens driving device can be effectively ensured.

[0053] Optionally, the first guiding structure 50 is a guiding sliding shaft. The axial direction of the guiding sliding shaft is parallel to the moving direction of the lens support 20, and the guiding sliding shaft is made of a magnetic material and can generate a magnetic force with the driving magnet 40. By such an arrangement, when the lens support 20 moves under the interaction of the driving magnet 40 and the driving coil 30, the guiding sliding shaft can play a role of limiting and guiding along the moving direction of the lens support 20, so as to ensure that the lens support 20 can move along the axial direction of the guiding sliding shaft. Of course, in this application, according to actual usage requirements, other structures such as balls 80 can also be used to replace the guiding sliding shaft. Moreover, in this application, the guiding sliding shaft can also play a role in reducing the friction between the lens support 20 and the base assembly 10 to a certain extent.

[0054] In Figure 12 it, the force F after the first magnetic attracting sheet 60 acts on the driving magnet 40 吸 is the decomposition schematic diagram. F 吸2 is conducive to the lens support 20 leaning towards the guiding sliding shaft, improving the bearing and guiding effects of the lens support 20, and preventing the driving assembly from causing the lens support 20 to slide laterally perpendicular to the driving direction of the guiding sliding shaft relative to the guiding sliding shaft due to the movement / driving component. F 吸1 can offset the movement component of the driving magnet 40 in the direction away from the driving side.

[0055] Preferably, a guiding chute 13 is provided corresponding to the guiding sliding shaft on the side of the bottom surface of the base assembly 10 close to the first side wall 11. At least a part of the guiding sliding shaft is fixedly arranged in the guiding chute 13, and at least another part of the guiding sliding shaft protrudes from the guiding chute 13 and is in sliding contact with the bottom surface of the lens support 20. In this application, after the guiding sliding shaft is installed in the guiding chute 13, a spot welding operation can be performed between the guiding sliding shaft and the guiding chute 13 to ensure the stability between the guiding sliding shaft and the guiding chute 13, so as to prevent the guiding sliding shaft from disengaging from the guiding chute 13, and support structures can be provided at both ends of the guiding chute 13 corresponding to both ends of the guiding sliding shaft. Further preferably, the support structure at one end can be a V-shaped support structure, and the support structure at the other end can be a U-shaped support structure. Of course, in order to ensure the stability of the lens support 20 and the guiding sliding shaft, corresponding chutes can also be provided on the bottom surface of the lens support 20 corresponding to the guiding sliding shaft.

[0056] In an embodiment (not shown) of the present application, the first guiding structure includes guiding balls and a third magnetic attracting sheet. There are at least two guiding balls. The two guiding balls are arranged at intervals between the base assembly and the lens support body along the moving direction of the lens support body, and guiding grooves are respectively arranged on the lens support body and the base assembly corresponding to the guiding balls; the third magnetic attracting sheet is embedded in the bottom surface of the base assembly. Of course, in this embodiment, guiding rollers can also be used instead of guiding balls. And when guiding rollers are used, the axial direction of the guiding rollers is perpendicular to the moving direction of the lens support body. Of course, in the above embodiment using the guiding sliding shaft, for the material selection of the guiding sliding shaft, generally, the guiding sliding shaft can be made of stainless steel or ceramic, and the stainless steel can be magnetic stainless steel or non-magnetic stainless steel. Therefore, when the guiding sliding shaft is made of a non-magnetic material, the third magnetic attracting sheet in this embodiment can be arranged below the guiding sliding shaft to ensure the acting force between the first guiding structure and the driving magnet.

[0057] During the movement of the lens support body 20 relative to the base assembly 10, or when the optical lens driving device is in different postures or is flipped or impacted under the action of an external force, since there is still a possibility of the lens support body 20 tipping over, or in other words, the lens support body 20 may be deflected during the movement, thus affecting the imaging effect of the imaging module. Therefore, in the present application, the optical lens driving device can also be provided with at least one ball 80. The ball 80 is arranged on the side of the lens support body 20 facing the first side wall 11, and the ball 80 is arranged close to the top end of the lens support body 20. Thus, the ball 80 plays a role in supporting and limiting the lens support body 20, preventing the lens support body 20 from tipping over greatly, resulting in the impact between the lens support body 20 and the base assembly 10 and affecting the structural reliability. And, in the present application, by arranging the ball 80 on the first side wall 11, it can also effectively reduce the tipping of the lens support body 20 affected by gravity and magnetic attraction force, as Figure 13 shown. Figure 13 is the tipping force F received when the lens support body 20 is in the downward posture 倾 Direction indication: F 吸1 is the force F after the action of the first magnetic attracting sheet 60 and the driving magnet 40 吸 resolved into the component force perpendicular to the first side wall 11, and G' is the resultant force of the gravity and magnetic attraction force received by the carrier in the vertical direction. At this time, the lens support body 20 will tip over towards the first side wall 11 due to the tipping force F as Figure 13 shown. 倾 And tip over.

[0058] Specifically, when there is one ball 80, the distances from the ball 80 to both ends of the driving magnet 40 in the moving direction of the lens support 20 are the same; when there are at least two balls 80, at least one ball 80 is provided at each of the two ends of the driving magnet 40 in the moving direction of the lens support 20. Moreover, when there are at least two balls 80, all the balls 80 can be arranged at intervals in the moving direction of the lens support 20.

[0059] Preferably, the lens support 20 is provided with at least one first mounting groove 21 corresponding to the ball 80, and at least one ball 80 is respectively arranged in each first mounting groove 21. At least a part of the ball 80 is movably arranged in the first mounting groove 21, and at least another part of the ball 80 protrudes from the first mounting groove 21 and can roll along the first side wall 11. The gap between the first side wall 11 and the corresponding side of the lens support 20 is smaller than the diameter of the ball 80. By such a setting, the stability between the ball 80 and the first side wall 11 can be effectively ensured. Or rather, by such a setting, not only can it be ensured that the ball 80 can rotate relative to the first side wall 11, but also it can be ensured that the ball 80 will not fall off from the first mounting groove 21.

[0060] In a specific embodiment of the present application, the magnetic attraction assembly 70 includes an adsorption magnet 71 and a second magnetic attraction sheet 72. The adsorption magnet 71 is arranged on one side of the bottom surface of the lens support 20 close to the second side wall 12. The second magnetic attraction sheet 72 is arranged on one side of the bottom surface of the base assembly 10 corresponding to the adsorption magnet 71 and close to the second side wall 12. By such a setting, a force acting on the lens support 20 can be generated through the interaction between the adsorption magnet 71 and the second magnetic attraction sheet 72.

[0061] Optionally, the base assembly 10 is provided with a receiving groove corresponding to the second magnetic attraction sheet 72, and there are mutually matching limiting protrusions 721 and limiting notches 722 between the two ends of the second magnetic attraction sheet 72 in the length direction and the receiving groove. By providing the mutually matching limiting protrusions 721 and limiting notches 722, not only can the second magnetic attraction sheet 72 be installed and limited, but also the magnetic attraction sheet can be prevented from being misassembled. Further optionally, among the two groups of mutually matching limiting protrusions 721 and limiting notches 722, one group of the limiting protrusions 721 and limiting notches 722 are respectively a V-shaped protrusion and a V-shaped notch, and the other group of the limiting protrusions 721 and limiting notches 722 are respectively a U-shaped protrusion and a U-shaped notch. Of course, an arc-shaped protrusion and an arc-shaped notch can also be used to replace the U-shaped protrusion and the U-shaped notch.

[0062] Specifically, the optical lens driving device further includes a second support structure 90. The second support structure 90 is movably disposed on the lens support 20 corresponding to the second magnetic attraction piece 72, and in the moving direction of the lens support 20, the second support structure 90 and the adsorption magnet 71 are spaced apart. In a specific embodiment of the present application, the second support structure 90 is a roller. The axial direction of the roller is perpendicular to the moving direction of the lens support 20, and the lens support 20 is provided with a second installation groove 22 corresponding to the roller. At least a part of the roller is movably disposed in the second installation groove 22, and at least another part of the roller protrudes from the second installation groove 22 and is in rolling contact with the second magnetic attraction piece 72. That is to say, in this embodiment, it is arranged by using a roller and a guiding slide shaft. And the axial direction of the roller in this embodiment is perpendicular to the axial direction of the slide shaft. At the same time, due to the different installation directions of the roller and the slide shaft, the length of the roller is less than the length of the slide shaft. Compared with the double-slide-shaft method in the prior art, the method of the roller plus the guiding slide shaft in this embodiment has the advantages of small installation difficulty and small movement resistance of the lens support 20. And compared with the double-row ball method in the prior art, when the optical lens driving device is subjected to an external force or accidentally drops, the setting scheme in this embodiment can effectively reduce the pits generated by the balls hitting the ball grooves.

[0063] Preferably, the surface of the second magnetic attraction piece 72 corresponding to the second support structure 90 can be polished, so as to improve the planar accuracy, and further improve the reliability and driving accuracy of the optical lens driving device.

[0064] Optionally, the optical lens driving device further includes: a first embedded steel sheet 14. At least a part of the first embedded steel sheet 14 is embedded in the base assembly 10. The first embedded steel sheet 14 is U-shaped and includes a first section, a second section, and a third section connected in sequence. At least a part of the first section is embedded in the first side wall 11, at least a part of the second section is embedded in the bottom surface of the base assembly 10, and at least a part of the third section is embedded in the second side wall 12. At the same time, laser welding holes can be provided at both ends of the second magnetic attraction piece 72 in the length direction, so that the second magnetic attraction piece 72 and the second section can be welded through the laser welding holes. And, dispensing holes can also be provided on the second section corresponding to the second magnetic attraction piece 72 for fixing the second magnetic attraction piece 72.

[0065] Optionally, a second embedded steel sheet 23. The second embedded steel sheet 23 is at least embedded in the bottom surface of the lens support 20. And the second embedded steel sheet 23 can be a magnetic steel sheet, which is beneficial to the installation of the first magnetic attraction piece 60 and the magnetic attraction assembly 70. At the same time, the shape of the second embedded steel sheet 23 can also be designed in a U-shape like the first embedded steel sheet 14 and at least another part of the second embedded steel sheet 23 is embedded in the side surface of the lens support 20.

[0066] Moreover, the provision of the first embedded steel sheet 14 and the second embedded steel sheet 23 in this application can also help improve the service strength of the lens support 20 and the base assembly 10.

[0067] Optionally, the optical lens driving device further includes a light-shielding sheet 100. A vertical plate 15 is provided on the light-emitting side of the base assembly 10 corresponding to the lens support 20. The vertical plate 15 is connected to the first side wall 11 and the second side wall 12 respectively, and the light-shielding sheet 100 is provided on the vertical plate 15. Moreover, a coating layer can be provided on the surface of the light-shielding sheet 100 in this application. The coating layer can be black or matte black. At the same time, an anti-reflection film can also be provided on the surface of the coating layer. The anti-reflection film can largely eliminate the problem of light flashing and reduce the influence of light reflection on the lens imaging.

[0068] Certainly, an FPC board for electrically connecting with the driving coil 30 can be provided on the base assembly 10 in this application.

[0069] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

[0070] 1. Effectively solve the problem of poor performance of the optical lens driving device in the prior art;

[0071] 2. Simple structure and stable performance.

[0072] Obviously, the above-described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0073] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0074] It should be noted that the terms "first", "second", etc. in the description, claims and drawings of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0075] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An optical lens driving device, characterized in that: include: A base assembly (10), the base assembly (10) having a receiving cavity, and the base assembly (10) having a first side wall (11) and a second side wall (12) arranged opposite to each other; A lens support body (20), the lens support body (20) being movably disposed in the accommodating cavity; a driving coil (30), wherein the driving coil (30) is arranged on the first side wall (11); a driving magnet (40), the driving magnet (40) being arranged on the lens support body (20) corresponding to the driving coil (30); a first guide structure (50), the first guide structure (50) being arranged on a side of the bottom surface of the base assembly (10) close to the first side wall (11), and at least a portion of the first guide structure (50) being capable of generating a magnetic force with the driving magnet (40); A first magnetic attraction sheet (60), the first magnetic attraction sheet (60) being arranged on the first side wall (11) corresponding to the driving magnet (40); A magnetic attraction component (70), wherein at least a portion of the magnetic attraction component (70) is arranged on a side of the bottom surface of the base component (10) close to the second side wall (12), and at least another portion of the magnetic attraction component (70) is correspondingly arranged on a side of the bottom surface of the lens support body (20) close to the second side wall (12).

2. The optical lens driving device according to claim 1, characterized in that: The distance from the first magnetic attraction sheet (60) to the top end of the driving magnet (40) is greater than the distance from the first magnetic attraction sheet (60) to the bottom end of the driving magnet (40).

3. The optical lens driving device according to claim 1, characterized in that: The first guide structure (50) is a guide sliding shaft, the axial direction of the guide sliding shaft is parallel to the movement direction of the lens support body (20), and the guide sliding shaft is made of magnetic material and can generate magnetic force with the driving magnet (40).

4. The optical lens driving device according to claim 3, characterized in that: A guide slot (13) is provided on the bottom surface of the base assembly (10) near the side edge of the first side wall (11) corresponding to the guide slide shaft, at least a portion of the guide slide shaft is fixedly disposed in the guide slot (13), and at least another portion of the guide slide shaft protrudes from the guide slot (13) and is in sliding contact with the bottom surface of the lens support body (20).

5. The optical lens driving device according to claim 1, characterized in that: The first guide structure (50) comprises: Guide balls, the number of the guide balls being at least two, the two guide balls being arranged at intervals between the base assembly (10) and the lens support body (20) along the movement direction of the lens support body (20), and the lens support body (20) and the base assembly (10) being respectively provided with guide grooves corresponding to the guide balls; A third magnetic attraction sheet, wherein the third magnetic attraction sheet is embedded in the bottom surface of the base assembly (10).

6. The optical lens driving device according to claim 1, characterized in that: The optical lens driving device further comprises at least one ball (80), wherein the ball (80) is arranged on a side of the lens support body (20) facing the first side wall (11), and the ball (80) is arranged close to the top end of the lens support body (20).

7. The optical lens driving device according to claim 6, characterized in that: When there is only one rolling ball (80), the distances from the rolling ball (80) to both ends of the driving magnet (40) in the moving direction of the lens support body (20) are the same; When there are at least two rolling balls (80), at least one rolling ball (80) is respectively provided at both ends of the driving magnet (40) in the moving direction of the lens support body (20).

8. The optical lens driving device according to claim 6, characterized in that: The lens support body (20) is provided with at least one first mounting groove (21) corresponding to the ball (80), and at least one ball (80) is respectively arranged in each of the first mounting grooves (21), at least a part of the ball (80) is movably arranged in the first mounting groove (21), and at least another part of the ball (80) protrudes from the first mounting groove (21) and can roll along the first side wall (11).

9. The optical lens driving device according to any one of claims 1 to 8, characterized in that: The magnetic force between the driving magnet (40) and the first guide structure (50) is greater than the magnetic force between the portion of the magnetic attraction component (70) located on the base component (10) and the portion of the magnetic attraction component (70) located on the lens support body (20).

10. The optical lens driving device according to any one of claims 1 to 8, characterized in that: The magnetic attraction component (70) comprises: An adsorption magnet (71), the adsorption magnet (71) being arranged on a side of the bottom surface of the lens support body (20) close to the second side wall (12); A second magnetic attraction sheet (72), the second magnetic attraction sheet (72) corresponding to the adsorption magnet (71) is arranged on a side of the bottom surface of the base assembly (10) close to the second side wall (12).

11. The optical lens driving device according to claim 10, characterized in that: The base assembly (10) is provided with a receiving groove corresponding to the second magnetic attraction sheet (72), and mutually matching limiting protrusions (721) and limiting notches (722) are provided between the two ends of the length direction of the second magnetic attraction sheet (72) and the receiving groove.

12. The optical lens driving device according to claim 10, characterized in that: The optical lens driving device further comprises a second supporting structure (90), wherein the second supporting structure (90) is movably arranged on the lens supporting body (20) corresponding to the second magnetic attraction sheet (72), and in the movement direction of the lens supporting body (20), the second supporting structure (90) and the attraction magnet (71) are arranged at intervals.

13. The optical lens driving device according to claim 12, characterized in that: The second supporting structure (90) is a roller, the axial direction of the roller is perpendicular to the movement direction of the lens support body (20), and the lens support body (20) is provided with a second mounting groove (22) corresponding to the roller, at least a part of the roller is movably arranged in the second mounting groove (22), and at least another part of the roller protrudes from the second mounting groove (22) and is in rolling contact with the second magnetic attraction sheet (72).

14. The optical lens driving device according to any one of claims 1 to 8, characterized in that: The optical lens driving device further comprises: a first embedded steel sheet (14), at least a portion of the first embedded steel sheet (14) being embedded in the base assembly (10), the first embedded steel sheet (14) being U-shaped and comprising a first section, a second section and a third section connected in sequence, at least a portion of the first section being embedded in the first side wall (11), at least a portion of the second section being embedded in the bottom surface of the base assembly (10), and at least a portion of the third section being embedded in the second side wall (12); and / or A second embedded steel sheet (23), wherein the second embedded steel sheet (23) is embedded at least in the bottom surface of the lens support body (20).

15. The optical lens driving device according to any one of claims 1 to 8, characterized in that: The optical lens driving device also includes a shading sheet (100); the base assembly (10) is provided with a vertical plate (15) corresponding to the light-emitting side of the lens support body (20); the vertical plate (15) is respectively connected to the first side wall (11) and the second side wall (12), and the shading sheet (100) is provided on the vertical plate (15).

16. A camera module, characterized in that: An optical lens driving device comprising any one of claims 1 to 15.

17. An electronic device, characterized in that: Including the camera module described in claim 16.

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