Lens driving device, camera device, and electronic device

Abstract

Provided are a lens driving device, a camera device, and an electronic device that can suppress scratches due to a driving shaft and a lens holding portion and suppress scratches due to abrasion of the driving shaft and the lens holding portion. The lens driving device includes a lens holding portion (40, 70), a driving shaft (15, 25), a vibration member (12, 22) that is connected to one end of the driving shaft (15, 25) and causes the driving shaft (15, 25) to vibrate, and a spring member (50, 80) that is fixed to the lens holding portion (40, 70) and has a gripping portion (56, 86) that sandwiches and grips the driving shaft (15, 25). An expansion tab portion (57, 87) that protrudes while being bent away from the driving shaft (15, 25) is provided at an end edge of the gripping portion in the axial direction of the driving shaft (15, 25). A camera device and an electronic device are also provided.

Description

Technical Field

[0001] This invention relates to lens driving devices, camera devices, and electronic devices used in smartphones and other electronic devices. Background Technology

[0002] In camera devices with zoom functionality, piezoelectric elements are sometimes used as the drive source for the movable part that holds the lens body. Patent Document 1 discloses a technology related to such a camera device. The camera device described in Patent Document 1 has a first movable lens body and a second movable lens body, with two actuators symmetrically arranged on one side and the other side of the optical axis clamping the lens body, respectively, to drive the first and second movable lens bodies. The actuator of this camera device consists of a fixed frame, a piezoelectric element, a drive shaft, a connecting member, and a mounting member. At the connection between the actuator's connecting member and the drive shaft, a first sliding member with a bent V-shape and a second sliding member, along with a pressing spring made of a metal plate, are provided. The force applied by the pressing spring clamps the drive shaft. When a drive pulse is applied to the piezoelectric element located at the base of the actuator's drive shaft, the drive shaft reciprocates asymmetrically along the axial direction with micro-vibrations, and the lens holding part supported on the drive shaft moves along the optical axis.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2007-49873 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] However, as in Patent Document 1, when a configuration is used to hold the drive shaft by elasticity and friction, a problem arises that scratches can occur due to friction between the drive shaft and the lens holder. For example, when assembling the device, the drive shaft may be damaged when it is inserted into the lens holder, and dust or foreign matter may be generated when the drive shaft is driven due to the sliding between the peripheral surface of the drive shaft and the holding surface of the lens holder.

[0008] The present invention was made in view of such a problem, and its object is to provide a lens driving device, camera device and electronic device that can suppress scratches caused by friction between the drive shaft and the lens holding part.

[0009] Methods for solving problems

[0010] To address the aforementioned issues, a preferred embodiment of the present invention provides a lens driving device comprising a lens holding portion, a drive shaft, a vibration member connected to one end of the drive shaft to cause the drive shaft to vibrate slightly, and a spring member fixed to the lens holding portion and having a holding portion that clamps and holds the drive shaft. An expansion plate portion is provided at the end edge of the holding portion along the axial direction of the drive shaft, which bends and protrudes in a manner that separates from the drive shaft.

[0011] Alternatively, in this configuration, the expansion plate may be located on both sides of the gripping portion along the axial direction of the drive shaft.

[0012] Alternatively, when viewed from the axial direction of the drive shaft, the spring component is connected to the drive shaft on at least three sides, and the expansion plates are respectively disposed on the three sides.

[0013] Additionally, the spring component may have a V-shaped portion, which is shaped such that one of the two opposing plates is bent in a V-shape. Furthermore, the lens holding portion may have a V-shaped groove parallel to the moving direction of the lens holding portion, in which the V-shaped portion is received.

[0014] As another preferred embodiment of the present invention, the camera device includes the above-described lens driving device.

[0015] As another preferred embodiment of the present invention, the electronic device includes the above-described camera device.

[0016] The effects of the invention

[0017] The lens driving device of the present invention includes a lens holding portion, a drive shaft, a vibration member connected to one end of the drive shaft and causing the drive shaft to vibrate slightly, and a spring member fixed to the lens holding portion and having a holding portion that clamps and holds the drive shaft. An expansion tab portion is provided at the end edge of the holding portion along the axial direction of the drive shaft, protruding while bending in a manner that separates from the drive shaft. This provides a lens driving device that, even if the end edge of the holding portion moves, is unlikely to cause it to dig into the drive shaft, thus suppressing scratches on the drive shaft or the holding portion, and suppressing scratches caused by friction between the drive shaft and the lens holding portion. Attached Figure Description

[0018] Figure 1 This is a front view of a smartphone 4 equipped with a camera device 3, including a lens driving device 1 as an embodiment of the present invention.

[0019] Figure 2 yes Figure 1 A perspective view of the lens driving device 1.

[0020] Figure 3 It is decomposition Figure 2 A three-dimensional view of the lens driving device 1.

[0021] Figure 4 Observed from the +X side Figure 2 A cross-sectional view of the section between the first fixed lens holding part 30 and the first movable lens holding part 40 in the lens driving device 1.

[0022] Figure 5 Observed from the +Y side Figure 2 A diagram of the main parts of the lens drive device 1.

[0023] Figure 6 yes Figure 2 A perspective view of the main parts of the lens driving device 1.

[0024] Figure 7 Viewed from other directions Figure 2 A perspective view of the +Z side portion of the main part of the lens drive device 1. Detailed Implementation

[0025] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Figure 1 As shown, a camera device 3, including a lens driving device 1 as one embodiment of the present invention, is housed in a smartphone 4.

[0026] The camera device 3 includes: a first fixed lens body 31, a first movable lens body 41, a second fixed lens body 61, and a second movable lens body 71; an image sensor 2 that converts light incident upon them into image signals; and a lens driving device 1 that holds the first fixed lens body 31, the first movable lens body 41, the second fixed lens body 61, the second movable lens body 71, and the image sensor 2, and drives the first movable lens body 41 and the second movable lens body 71 relative to the image sensor 2. The first fixed lens body 31, the first movable lens body 41, the second fixed lens body 61, and the second movable lens body 71 are configured such that their respective optical axes are aligned.

[0027] Hereinafter, the direction in which light from the subject is incident will be appropriately referred to as the X direction, a direction orthogonal to the X direction will be appropriately referred to as the Y direction, and a direction orthogonal to both the X and Y directions will be appropriately referred to as the Z direction. The X direction is the optical axis. Additionally, sometimes the side of the subject along the optical axis, i.e., the +X side, is called the front side, and the side opposite the subject where the image sensor 2 is located, i.e., the -X side, is called the rear side. Furthermore, sometimes the +Z side is called the right side, the -Z side is called the left side, the +Y side is called the upper side, and the -Y side is called the lower side.

[0028] The lens drive device 1 includes a corner cover 8, a housing 9, a first FPC 11, a second FPC 21, a first vibration component 12, a second vibration component 22, a rubber bushing 13, a rubber bushing 23, a first drive shaft 15, a second drive shaft 25, a first position sensor 14, a second position sensor 24, a first position detection magnet 16, a second position detection magnet 26, a first guide shaft 17, a second guide shaft 27, a first spring component 50, a second spring component 80, a first fixed lens holding part 30, a first movable lens holding part 40, a second fixed lens holding part 60, a second movable lens holding part 70, and a base 90.

[0029] The housing 9 is a hollow box shape with openings on the front and rear sides. A corner cover 8 is embedded in the opening 98 on the front side of the housing 9. A base 90 is embedded in the opening 99 on the rear side of the housing 9. On the upper plate of the housing 9, three cover plates 94 are arranged side by side along the optical axis.

[0030] The base 90 has a rectangular rear plate and an upper side plate, a lower side plate, a left side plate, and a right side plate that stand forward from the periphery of the rear plate. The central portion in the Z direction may not have an upper and lower side plate. The front ends of the upper side plate, lower side plate, left side plate, and right side plate are formed flat, and they mount and fix the rear surface of the second fixed lens holder 70 (described later). The front surface of the second fixed lens holder 70 is formed flat, and it mounts and forms the rear surface of the first fixed lens holder 30 (described later).

[0031] A through hole 91 is provided at the center of the base 90. On the rear surface of the rear plate of the base 90, the image sensor 2 is fixed with its light-receiving surface facing the through hole 91. On the left and right sides of the through hole 91 on the front surface of the base 90, the rear ends of the first guide shaft 17 and the second guide shaft 27 are fixed. The length of the second guide shaft 27 is shorter than the length of the first guide shaft 17.

[0032] Along the upper surface of the lower plate 93 of the housing 9, a first FPC 11 and a second FPC 21 are disposed. The first FPC 11 has a flat plate portion 115 and a solder pad portion 116 rising from one end of the flat plate portion 115. The second FPC 21 has a flat plate portion 215 and a solder pad portion 216 rising from one end of the flat plate portion 215. Figure 2 As shown, the flat plate portion 115 and the flat plate portion 215 are exposed to the outside through the gap 95 between the lower plate 93 and the right side plate 92 of the housing 9.

[0033] A first vibrating component 12 is fixed to the solder pad portion 116. A second vibrating component 22 is fixed to the solder pad portion 216. Figure 5 As shown, the first vibrating component 12 and the second vibrating component 22 are formed by stacking piezoelectric element 110, elastic thin plate 150 and piezoelectric element 120.

[0034] In the first vibrating component 12, the front end of the first drive shaft 15 is bonded and fixed. Additionally, rubber bushing 13 engages with the circular hole 355 of the first fixed lens holding portion 30, and rubber bushing 160 engages with the circular hole 655 of the second fixed lens holding portion 60. The first drive shaft 15 is inserted into the center holes of rubber bushings 13 and 160, and is connected to the fixing portion of the lens driving device 1 via rubber bushings 13 and 160. In the second vibrating component 22, the front end of the second drive shaft 25 is bonded and fixed. Additionally, rubber bushing 23 engages with the circular hole 385 of the first fixed lens holding portion 30, and rubber bushing 190 engages with a circular hole (not shown) of the base 90. The second drive shaft 25 is inserted into the center holes of rubber bushings 23 and 190, and is connected to the fixing portion of the lens driving device 1 via rubber bushings 23 and 190. The length of the second drive shaft 25 is longer than the length of the first drive shaft 15.

[0035] Inside the housing 9, a first fixed lens holder 30, a first movable lens holder 40, a second fixed lens holder 60, and a second movable lens holder 70 are arranged sequentially from the front side. The first fixed lens holder 30 and the first fixed lens body 31 held thereon protrude forward from between the two corner covers 8 in the opening 98 of the housing 9.

[0036] The first fixed lens holding part 30 is a component that holds the first fixed lens body 31. The first movable lens holding part 40 is a component that holds the first movable lens body 41. The second fixed lens holding part 60 is a component that holds the second fixed lens body 61. The second movable lens holding part 70 is a component that holds the second movable lens body 71.

[0037] The first fixed lens holding part 30 and the second fixed lens holding part 60 are fixed to the inner surface of the housing 9. The first movable lens holding part 40 is movably supported in the X direction by the first drive shaft 15, the first guide shaft 17 and the second guide shaft 27. The second movable lens holding part 70 is movably supported in the X direction by the second drive shaft 25, the first guide shaft 17 and the second guide shaft 27.

[0038] The first fixed lens holding part 30 has a middle part with an upwardly opening U-shaped groove, a left protrusion protruding from the left side of the middle part, and a right protrusion protruding from the right side of the middle part. A circular hole 355 and a circular hole (not shown) penetrate the left protrusion along the X direction. Circular holes 337 and 385 penetrate the right protrusion along the X direction. Circular hole 355 is larger than the circular hole (not shown) and is positioned higher, and circular hole 385 is larger than circular hole 337 and is positioned higher.

[0039] The second fixed lens holding part 60 has a U-shaped groove that opens upward in the center, and has a circular hole 647 and a circular hole 655 extending along the X direction on the left side, and a corner hole 600 extending along the X direction on the right side. The circular hole 655 is larger than the circular hole 647 and is located on the upper side. The corner hole 600 is sized to not contact the second drive shaft 25 and the second guide shaft 27.

[0040] The first movable lens holding part 40 has a middle part 42 with an upwardly opening U-shaped groove, a wrist part 43 protruding from the right side of the middle part 42, and a support platform part 44 protruding from the left side of the middle part 42. The first movable lens body 41 is received and held in the groove of the middle part 42. At the front end of the wrist part 43, there is a U-shaped sliding groove 437 that opens to the right. The width of the sliding groove 437 in the vertical direction is approximately the same as the diameter of the second guide shaft 27, and it extends along the X direction for the second guide shaft 27 to pass through.

[0041] The support platform 44 is generally rectangular. A circular hole 447 is provided in the support platform 44. The circular hole 447 has the same diameter as the first guide shaft 17, extends through the support platform 44 along the X direction, and allows the first guide shaft 17 to pass through. A V-groove 440 is provided on the upper surface of the support platform 44. The V-groove 440 extends along the X direction. A storage portion 446 for housing the first position detection magnet 16 is provided on the lower surface of the support platform 44. The first position detection magnet 16 is housed and fixed in the storage portion 446. A first position sensor 14 is fixed on the first FPC 11 at a position opposite to the first position detection magnet 16. The first position sensor 14 detects the magnetic field from the first position detection magnet 16 and outputs a signal indicating the detection result.

[0042] A first spring component 50 is fixed to the support platform 44. The first spring component 50 has a V-spring 51 and an L-spring 52. The V-spring 51 is V-shaped on two planes and has a V-section 53 housed in a V-groove 440 and a flat section 54 mounted on the upper surface of the support platform 44. It is fixed to the support platform 44. The L-spring 52 is L-shaped, with one flat section 58 facing the open portion of the V-section 53 of the V-spring 51, and the other flat section 59 is fixed to the left side of the support platform 44. The first spring component 50 is fixed to the support platform 44, forming a gripping portion 56 that holds the first drive shaft 15 with the V-section 53 of the V-spring 51 and the flat section 58 of the L-spring 52, creating a triangular gap 55 into which the first drive shaft 15 is inserted.

[0043] When the first drive shaft 15 is inserted, the two planar portions and the planar portion 58 of the V-section 53 abut against the first drive shaft 15, and the planar portion 58 pushes the first drive shaft 15 toward the V-section 53 by spring force. Along the axial direction of the first drive shaft 15, at the front and rear ends of the two planar portions and the planar portion 58 of the V-section 53, respectively, there are expansion tabs 57. The expansion tabs 57 protrude forward or backward while bending in a manner separating from the first drive shaft 15. The base end of the expansion tab 57 includes at least a portion that abuts against the first drive shaft 15. Therefore, when viewed along this abutting portion, the two planar portions and the planar portion 58 of the V-section 53 abut against the first drive shaft 15, but the expansion tab 57 gradually separates when reaching the base end. The degree of bending of the expansion tab 57 is only slight, and it is particularly desirable to achieve a degree that does not create gaps at the base end.

[0044] The second movable lens holding part 70 includes: a middle part 72 having a U-shaped groove opening upwards; a wrist part 73 protruding from the left side of the middle part 72; and a support platform part 74 protruding from the right side of the middle part 72. The second movable lens body 71 is received and held in the groove of the middle part 72. At the front end of the wrist part 73, a U-shaped sliding groove 737 opening to the left is provided. The sliding groove 737 has a vertical width approximately the same as the diameter of the first guide shaft 17, extends along the X direction, and allows the first guide shaft 17 to pass through. The second movable lens body 71 is heavier than the first movable lens body 41; therefore, the second movable lens holding part 70 is also heavier than the first movable lens holding part 40.

[0045] The support platform 74 is generally rectangular. A circular hole 747 is provided in the support platform 74. The circular hole 747 has the same diameter as the second guide shaft 27, extends through the support platform 74 along the X direction, and allows the second guide shaft 27 to pass through. A V-groove 740 is provided on the upper surface of the support platform 74. The V-groove 740 extends along the X direction. A storage portion 746 for housing the second position detection magnet 26 is provided on the lower surface of the support platform 74. The second position detection magnet 26 is stored and fixed in the storage portion 746. A second position sensor 24 is fixed on the second FPC 21 at a position opposite to the second position detection magnet 26. The second position sensor 24 detects the magnetic field from the second position detection magnet 26 and outputs a signal indicating the detection result.

[0046] A second spring component 80 is fixed to the support platform 74. The second spring component 80 has a V-spring 81 and an L-spring 82. The V-spring 81 forms a V-shape on two planes, having a V-section 83 housed in a V-groove 740 and a flat section 84 mounted on the upper surface of the support platform 74, and is fixed to the support platform 74. The L-spring 82 is L-shaped, with one flat section 88 facing the open portion of the V-section 83 of the V-spring 81, and the other flat section 89 is fixed to the right side of the support platform 74. The second spring component 80 is fixed to the support platform 74, forming a gripping portion 86 that holds the second drive shaft 25 with the V-section 83 of the V-spring 81 and the flat section 88 of the L-spring 82, creating a triangular gap 85 into which the second drive shaft 25 is inserted.

[0047] When the second drive shaft 25 is inserted, the two planar portions and the planar portion 88 of the V-section 83 abut against the second drive shaft 25, and the planar portion 88 presses the second drive shaft 25 towards the V-section 83 using spring force. At the front and rear ends of the two planar portions and the planar portion 88 of the V-section 83, respectively, there are expansion tabs 87. The expansion tabs 87 bend and protrude forward or backward in a manner that separates from the second drive shaft 25. The base end of the expansion tab 87 includes at least a portion that abuts against the second drive shaft 25. Therefore, when viewed along this abutting portion, the two planar portions and the planar portion 88 of the V-section 83 abut against the second drive shaft 25, but the expansion tab 87 gradually separates when reaching the base end. The bending engagement of the expansion tab 87 is only slightly required, and it is particularly desirable to achieve a degree that does not create gaps at the base end.

[0048] The first drive shaft 15 passes through the circular hole 355 of the first fixed lens holding part 30, the gap 55 of the first spring member 50 fixed to the first movable lens holding part 40, and the circular hole 655 of the second fixed lens holding part 60. The first vibrating member 12 is fixed to the front end of the first drive shaft 15. The portion near the front end of the first drive shaft 15 is connected to the circular hole 355 of the first fixed lens holding part 30 via a rubber bushing 13. The rear end of the first drive shaft 15 is connected to the circular hole 655 of the second fixed lens holding part 60 via a rubber bushing 160. The first drive shaft 15 is clamped and pressed from the outside by the first spring member 50. As a result, the two planar portions and the inner surface of the planar portion 58 of the V-section 53 of the first spring member 50 frictionally engage with the outer peripheral surface of the first drive shaft 15, and the first movable lens holding part 40 is held on the first drive shaft 15.

[0049] The second drive shaft 25 passes through the circular hole 385 of the first fixed lens holding part 30, the corner hole 600 of the second fixed lens holding part 60, the gap 85 of the second spring member 80 fixed to the second movable lens holding part 70, and the circular hole (not shown) of the base 90. The front end of the second drive shaft 25 is fixed to the second vibrating member 22. The portion near the front end of the second drive shaft 25 is connected to the circular hole 385 of the first fixed lens holding part 30 via a rubber bushing 23. The rear end of the second drive shaft 25 is connected to the circular hole (not shown) of the base 90 via a rubber bushing 190. The second drive shaft 25 is clamped and pressed from the outside by the second spring member 80. As a result, the inner surfaces of the two planar portions and the planar portion 88 of the V portion 83 of the second spring member 80 are frictionally engaged with the outer peripheral surface of the second drive shaft 25, and the second movable lens holding part 70 is held on the second drive shaft 25.

[0050] The first guide shaft 17 is securely fixed to the rear side wall of the base 90, and is secured by the sliding groove 737 of the second movable lens holder 70, the circular hole 647 of the second fixed lens holder 60, and the circular hole 447 of the first movable lens holder 40. There is almost no gap between the first guide shaft 17 and the first movable lens holder 40 in the circular hole 447, thus the first guide shaft 17 guides the first movable lens holder 40 smoothly along the X direction while maintaining a predetermined posture. The first guide shaft 17 is positioned such that it is almost in contact with the upper and lower inner surfaces of the sliding groove 737 of the second movable lens holder 70, preventing the second movable lens holder 70 from rotating around the second guide shaft 27.

[0051] The second guide shaft 27 is securely fixed to the rear sidewall of the base 90, and is securely fixed by the round hole 337 through the round hole 747 of the second movable lens holding part 70, the corner hole 600 of the second fixed lens holding part 60, the sliding groove 437 of the first movable lens holding part 40, and the round hole 337 of the first fixed lens holding part 30. The second guide shaft 27 is thicker than the first guide shaft 17. There is almost no gap between the second guide shaft 27 and the second movable lens holding part 70 in the round hole 747, thereby guiding the second movable lens holding part 70 smoothly along the X direction while maintaining a predetermined posture. The second guide shaft 27 is arranged to be in almost contact with the upper and lower inner surfaces of the sliding groove 437 of the first movable lens holding part 40, preventing the first movable lens holding part 40 from rotating around the first guide shaft 17.

[0052] When a predetermined pulse voltage is repeatedly applied to the first vibrating member 12 from the first FPC 11, the first vibrating member 12 undergoes slight deformation, and simultaneously, the first drive shaft 15 repeatedly performs small reciprocating asymmetrical movements in the X direction. For example, the first movable lens holding part 40 follows the movement of the first drive shaft 15 at a low speed in the +X direction, but does not follow it when the first drive shaft 15 moves at a high speed in the -X direction, instead remaining in that position and moving only in the +X direction depending on the situation. This action is repeated, and the first movable lens holding part 40 moves intermittently in the +X direction. If an opposite pulse voltage is applied, the first movable lens holding part 40 moves intermittently in the -X direction.

[0053] When a predetermined pulse voltage is repeatedly applied to the second vibrating member 22 from the second FPC 21, the second vibrating member 22 undergoes slight deformation, accompanied by a repeated small reciprocating asymmetrical movement of the second drive shaft 25 in the X direction. For example, the second movable lens holding part 70 follows the movement of the second drive shaft 25 at a low speed in the +X direction, but does not follow when the second drive shaft 25 moves at a high speed in the -X direction and remains in its position, moving only in the +X direction depending on the situation. This action is repeated, and the second movable lens holding part 70 moves intermittently in the +X direction. If an opposite pulse voltage is applied, the second movable lens holding part 70 moves intermittently in the -X direction.

[0054] Here, the second movable lens body 71 is thicker than the first movable lens body 41. Correspondingly, the second movable lens holding portion 70 is larger in the front-rear direction than the first movable lens holding portion 40. Therefore, the combined weight of the second movable lens body 71 and the second movable lens holding portion 70 (which are movable portions) is greater than the combined weight of the first movable lens body 41 and the first movable lens holding portion 40. Consequently, the load applied to the second guide shaft 27 is greater than the load applied to the first guide shaft 17, which may hinder smooth movement while maintaining a predetermined posture. However, by making the second guide shaft 27 thicker than the first guide shaft 17, smooth movement while maintaining a predetermined posture can be ensured.

[0055] Each lens body of the first fixed lens body 31, the first movable lens body 41, the second fixed lens body 61, and the second movable lens body 71 is provided with a U-shaped groove opening upward toward the corresponding lens holding part after being installed in the housing 9 along with the corresponding drive shaft and guide shaft, starting from the opening in the upper plate of the housing 9. After installation, the opening is blocked by the cover plate 94.

[0056] The above are the details of this embodiment. For the lens driving device 1 in this embodiment, a lens driving device 1 can be provided, comprising: lens holding portions 40, 70; drive shafts 15, 25; vibration members 12, 22 connected to one end of the drive shafts 15, 25 and causing the drive shafts 15, 25 to vibrate slightly; spring members 50, 80 fixed to the lens holding portions 40, 70 and having holding portions 56, 86 that clamp and hold the drive shafts 15, 25; and at the end edge of the holding portions 56, 86 along the axial direction of the drive shafts 15, 25, expansion plates 57, 87 that bend and protrude while separating from the drive shafts 15, 25. Therefore, even if the end edges of the holding portions 56, 86 move, it is difficult for them to dig into the drive shafts 15, 25, and scratches on the drive shafts 15, 25 or the holding portions 56, 86 can be suppressed. For example, it can prevent scratches on drive shafts 15 and 25 when they are inserted into lens holding parts 40 and 70, or suppress the generation of dust or foreign objects when drive shafts 15 and 25 are driven.

[0057] Furthermore, in the above embodiments, the expansion plates 57 and 87 may be provided only on the end edges of the gripping portions 56 and 86 of the spring components 50 and 80, on the +X side and the X side. Alternatively, the expansion plates 57 and 87 may be provided only on the end edge of one of the gripping portions 56 and 86 of the spring components 50 and 80. Additionally, for example, the expansion plates 57 and 87 may be provided only on two or one of the three end edges on the +X side.

[0058] Symbol explanation:

[0059] 1 Lens driving device; 2 Image sensor; 3 Camera device; 4 Smartphone; 8 Corner cover; 9 Housing; 11 First FPC; 12 First vibration component; 13 Rubber bushing; 14 First position sensor; 15 First drive shaft; 16 First position detection magnet; 17 First guide shaft; 21 Second FPC; 22 Second vibration component; 23 Rubber bushing; 24 Second position sensor; 25 Second drive shaft; 26 Second position detection magnet; 27 Second guide shaft; 30 First fixed lens holding part; 31 First fixed lens body; 40 First movable lens holding part; 41 First movable lens body; 42 Middle component; 43 Wrist part; 44 Support platform part; 50 First spring component; 51 V spring; 52 L spring; 53 V part; 54, 58, 59 Flat parts; 55 Gap; 56 Holding part; 57 Expanding piece part; 60 Second fixed lens holding part; 61 Second fixed lens holding part 70 Lens body; 71 Second movable lens holding part; 72 Middle part; 73 Wrist part; 74 Support platform part; 80 Second spring part; 81 V spring; 82 L spring; 83 V part; 84, 88, 89 Flat parts; 85 Gap; 86 Holding part; 87 Expanding plate part; 90 Base; 91 Through hole; 92 Side plate; 93 Lower plate; 94 Cover plate; 95 Gap; 98 Opening part; 99 Opening part; 110 Piezoelectric element ; 115 Flat plate section; 116 Solder pad section; 120 Piezoelectric element; 150 Elastic sheet; 160 Rubber bushing; 190 Rubber bushing; 215 Flat plate section; 216 Solder pad section; 337, 355 Round holes; 385 Round hole; 437 Sliding groove; 440 V-groove; 446 Storage section; 447 Round hole; 600 Corner hole; 647 Round hole; 655 Round hole; 737 Sliding groove; 740 V-groove; 746 Storage section; 747 Round hole.

Claims

1. A lens driving device, characterized in that, have: A lens holding part having a support platform portion with a V-groove; Drive shaft; A vibration component connected to one end of the drive shaft and causing the drive shaft to vibrate slightly; and A spring component fixed to the lens holding part, and having a holding part that clamps and holds the drive shaft. The spring component includes a V-spring and an L-spring. The V-spring forms a V-shape on two planar portions and has a V-shaped portion received in the V-groove and a planar portion mounted on the support platform, and is fixed to the support platform. The L-spring is L-shaped, with one planar portion facing the open portion of the V-shaped portion of the V-spring, and the other planar portion is fixed to the support platform. The gripping part is configured as having two planar portions of the V portion of the V spring, and a planar portion of the L spring facing the open portion of the V portion of the V spring. A first expansion plate and a second expansion plate are respectively provided in the three planar portions. Each of the planar portions constituting the gripping part abuts against the drive shaft along the drive shaft axial direction. The first expansion plate is disposed at the end of the drive shaft near the vibrating member on the axial side of each of the planar portions constituting the gripping portion, and protrudes along the axial direction of the drive shaft towards the vibrating member while bending away from the drive shaft. The second expansion plate is disposed at the end of the drive shaft on the side away from the vibrating member in the axial direction of each of the planar portions constituting the gripping portion, and protrudes away from the vibrating member along the axial direction of the drive shaft while bending away from the drive shaft in a manner that separates from the drive shaft.

2. The lens driving device according to claim 1, characterized in that, The V-groove is designed to be parallel to the direction of movement of the lens holding part.

3. A camera device, characterized in that, It has the lens driving device as described in claim 1 or 2.

4. An electronic device, characterized in that, The device comprises the camera apparatus of claim 3.

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