JP2007094235A - Lens drive device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lens drive device capable of preventing fluctuations in the characteristic of a motor and smoothly moving a carrier in the direction of the optical axis of a lens by preventing deformation of a spring, caused by lateral displacement or backlash of the carrier, even when the inner ring and outer ring of the spring are not on the same plane. <P>SOLUTION: The lens drive device drives the carrier 7 in the direction of the optical axis of the lens 10 in relation to an outer cylindrical portion 6 by electromagnetic force generated by power energized to a coil 10. The spring 9 is a plate spring of an annular shape as viewed from above and has an inner ring 9a attached to the carrier 7 and an outer ring 9b attached to the outer cylindrical portion 6. At least the inner circumferential edge of the outer ring 9b or the outer circumferential edge of the inner ring 9a has position restricting parts 25 which, when the inner ring 9a radially moves relative to the outer ring 9b, restrict radial movement by coming into contact with it. The position restricting parts 25 project in the direction of the optical axis of the lens 23. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lens driving device that drives a lens in the optical axis direction of the lens.

  Patent Document 1 includes a substantially cylindrical yoke, an outer cylinder portion on which the yoke is mounted, a carrier having a lens, a spring that supports the carrier on the inner peripheral side of the outer cylinder portion, a coil, and a magnet. A lens driving device is disclosed that moves the carrier in the direction of the optical axis of the lens with respect to the outer cylinder by electromagnetic force generated by energizing the coil.

  The spring of Patent Document 1 is a plate spring having a substantially annular shape in plan view, in which an inner ring is attached to a carrier and an outer ring is attached to an outer cylinder part.

JP 2004-280031 A

  However, in the conventional technique described in Patent Document 1 described above, a force in the lateral direction (direction intersecting the optical axis) acts on the carrier, and the inner ring attached to the carrier is the outer ring of the spring. If it moves more than a predetermined amount in the radial direction, there is a problem that the spring is deformed and the motor characteristics may change.

  In addition, when the spring is deformed and the position of the carrier is shifted, the clearance between the carrier and the outer cylinder part cannot be kept constant, and sliding friction occurs between the outer peripheral surface of the carrier and the inner peripheral surface of the outer cylinder part. There is a problem that the carrier is difficult to move smoothly in the direction of the optical axis of the lens.

  In particular, in the prior art, when the inner ring attached to the carrier and the outer ring attached to the outer cylinder part are in a position shifted in the optical axis direction (when the inner ring and the outer ring of the spring are not flush with each other). ), It is difficult to restrict the movement of the inner ring relative to the outer ring when a lateral force acts on the carrier.

  Even when the inner ring and the outer ring of the spring are not flush with each other, the present invention prevents the deformation of the spring due to the lateral displacement or rattling of the carrier, thereby preventing changes in motor characteristics and the carrier. It is an object of the present invention to obtain a lens driving device that can move smoothly in the direction of the optical axis of the lens.

  In order to solve the above-mentioned problem, the invention described in claim 1 includes a substantially cylindrical yoke, an outer cylinder portion to which the yoke is attached, a substantially cylindrical carrier to which a lens is attached, and a carrier as an outer cylinder. A lens driving device that includes a spring supported on the inner peripheral side of a part, a coil, and a magnet, and drives the carrier in the optical axis direction of the lens with respect to the outer cylinder part by electromagnetic force generated by energizing the coil. The spring is an annular leaf spring in plan view, and has an inner ring attached to the carrier and an outer ring attached to the outer cylinder, and at least one of the inner peripheral edge of the outer ring and the outer peripheral edge of the inner ring A position restricting portion that abuts when the inner ring moves relative to the outer ring in the radial direction and restricts the movement in the radial direction, and the position restricting portion projects toward the optical axis direction of the lens. It is characterized by having installed.

  The invention described in claim 2 is characterized in that, in the invention described in claim 1, the position restricting portion is formed by bending a piece integrally formed on the inner peripheral edge of the outer ring.

  The invention described in claim 3 is the invention described in claim 2, wherein the position restricting portion is formed by bending a circumferential end of the piece portion in a radial direction. .

  The invention described in claim 4 is the invention described in claim 1, and has an auxiliary ring that is separate from the outer ring and has substantially the same diameter as the outer ring, and in the optical axis direction on the inner peripheral edge of the auxiliary ring. A projecting position restricting portion is provided, and a spring position restricting portion is formed by attaching an auxiliary ring to the surface of the outer ring.

  According to a fifth aspect of the present invention, there is provided a substantially cylindrical yoke, an outer cylinder portion to which the yoke is attached, a substantially cylindrical carrier to which a lens is attached, and a spring that supports the carrier with respect to the outer cylinder portion. A lens driving device that includes a coil and a magnet, and drives the carrier in the optical axis direction of the lens with respect to the outer cylinder portion by electromagnetic force generated by energizing the coil, and the spring is an annular plate spring in plan view An inner ring attached to the carrier and an outer ring attached to the outer cylinder, and the inner peripheral edge of the outer ring is in contact with the outer peripheral edge of the carrier when the carrier moves in the radial direction. A position restricting portion for restriction is provided, and the position restricting portion protrudes in the optical axis direction.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the position restricting portion is formed integrally with the inner peripheral edge portion of the outer ring, and a piece projecting in the radial direction from the outer ring is light-transmitted. It is formed by bending in the axial direction.

  The invention described in claim 7 is the invention according to any one of claims 1 to 6, wherein the spring includes a plurality of arm portions connecting the inner ring and the outer ring, and the arm portion is a circular arc in the circumferential direction. And is provided with an interval in the annular direction of the spring, and a position restricting portion is provided between the arm portions.

  According to the first aspect of the present invention, when the lens driving device receives a lateral force due to an impact such as shaking or dropping, the carrier moves in the radial direction relative to the outer cylinder portion. Since the movement of the carrier in the radial direction is restricted by the other ring coming into contact with the position restricting portion provided on at least one of the inner ring attached to the outer ring and the outer ring attached to the outer cylinder, the deformation of the spring Can be prevented, and changes in motor characteristics can be prevented.

  Since the position restricting portion protrudes in the optical axis direction, when the inner ring and the outer ring are in positions shifted in the optical axis direction (for example, when the carrier is in a position moved with respect to the outer cylinder portion). However, the movement of the carrier in the radial direction can be restricted.

  Since the movement of the carrier in the lateral direction is restricted by the position restricting portion, the spring is not easily deformed, and the clearance between the carrier and the outer tubular portion can be kept constant, and the inner peripheral surface of the carrier and the outer tubular portion And the carrier can move smoothly in the optical axis direction of the lens.

  Since the position restricting portion is provided in the inner ring or the outer ring of the spring and restricts the relative position of the outer ring with respect to the inner ring, the clearance between the outer tube portion and the carrier is set only by the spring. Since the adjustment between the outer cylinder part and the carrier at the time of assembly is unnecessary, the assembly can be easily performed.

  According to the second aspect of the present invention, the same effect as that of the first aspect of the invention can be obtained, and the position restricting portion is formed by bending a piece integrally formed with the outer ring. The position restricting portion can be provided simply by bending a portion of the spring formed by the method, etc., and manufacturing is easy.

  Since the position restricting portion is formed integrally with the inner ring or the outer ring of the leaf spring, and the inner ring and the outer ring, which are the same material, are in contact with each other to restrict the position, the carrier and the outer cylinder portion are made of resin. In addition, it is possible to prevent generation of dust and dust due to scraping of the resin material.

  When the carrier tries to move in the lateral direction relative to the outer cylinder, the inner ring and the outer ring, both of which are spring materials, come into contact with each other to regulate the position. it can.

  According to the invention described in claim 3, the same effect as that of the invention described in claim 2 is obtained, and the position restricting portion is bent in the circumferential direction by a fold in the radial direction, so that it is formed in the outer ring. The position of the inner peripheral side end of the one part does not change before being bent and after being bent to be the position restricting part. Therefore, since the clearance between the position restricting portion provided in the outer ring and the inner ring does not change before and after the bending of the one part, the design and manufacture of the spring is easy.

  According to the invention described in claim 4, the same effect as that of the invention described in claim 1 can be obtained, and since the auxiliary ring is attached and the position restricting portion is provided, the existing spring without the position restricting portion is provided. Can be retrofitted and has a high degree of design freedom.

  According to the invention described in claim 5, when the lens driving device receives a lateral force due to an impact such as shaking or dropping, when the carrier moves in the radial direction relative to the outer cylinder portion, Since the outer ring attached to the carrier and the outer cylinder portion and the position restricting portion come into contact with each other and the movement of the carrier in the radial direction is restricted, the deformation of the spring can be prevented and the change in the motor characteristics can be prevented.

  Since the position restricting portion protrudes in the optical axis direction, the carrier and the outer ring are in a position shifted in the optical axis direction (for example, when the carrier is in a position moved with respect to the outer cylinder portion). However, the movement of the carrier in the radial direction can be restricted.

  Since the spring can be prevented from being deformed by the position restricting portion, the clearance between the carrier and the frame can be kept constant, and sliding friction is hardly generated between the carrier and the inner peripheral surface of the outer cylinder portion. It can move smoothly in the optical axis direction of the lens.

  According to the invention described in claim 6, the same effect as that of the invention described in claim 5 is obtained, and the position restricting portion is formed by bending a piece integrally formed with the outer ring. The position restricting portion can be provided simply by bending a portion of the spring formed by the method, etc., and manufacturing is easy.

  Since the position restricting portion is bent in the optical axis direction by a piece projecting radially from the inner peripheral edge, the position restricting portion facing the outer peripheral edge of the carrier has a planar shape. Accordingly, even when the position restricting portion comes into contact with the carrier, the surface of the position restricting portion comes into contact with the carrier, so that the resin carrier can be prevented from being scraped, and generation of dust and dust due to the scraping can be prevented.

  According to the invention described in claim 7, while having the same effect as that of the invention described in any one of claims 1 to 6, the spring restricts the position of the lens in the circumferential direction by the arm portion. Therefore, the three-dimensional position regulation of the optical axis direction and the circumferential direction of the lens can be performed only by the spring.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 is a perspective view of the front spring and the rear spring attached to the carrier as seen from the front side, FIG. 2 is a perspective view of the front spring as seen from the front side, and FIG. 3 is a perspective view of the rear spring from the front side. 4 is a perspective view of the lens driving device according to the present embodiment, FIG. 4 is a perspective view of a state in which only the rear spring is attached to the carrier, as viewed from the rear side, and FIG. 6 is a longitudinal sectional view of the lens driving device, and FIG. 7 is a perspective view of the entire lens driving device.

  The lens driving device 1 according to the present embodiment is incorporated in an autofocus camera of a cellular phone. As shown in FIG. 5, a substantially cylindrical yoke 3 and an outer cylinder portion (base 5) on which the yoke 3 is mounted. The frame 6), the carrier 7 disposed on the inner peripheral side of the yoke 3, the coil 10 disposed on the outer peripheral side of the carrier 7, the front spring 9 disposed on the front side of the carrier 7, and the rear side. The rear spring 11 is provided. The base (outer cylinder part) 5, the frame (outer cylinder part) 6, and the carrier 7 are each made of resin. Note that a frame 6 is mounted on the base 5 to form an outer cylinder portion, a cover 15 is attached to the frame 6, and a cover tape 17 (not shown in FIG. 6) is attached to the cover 15. It is worn.

  The yoke 3 has a substantially U-shaped cross section, and a ring-shaped magnet 13 is disposed in the U-shape. The magnet 13 is divided into four arc-shaped blocks along the circumferential direction.

  A front spacer 19 is disposed between the front spring 9 and the yoke 3, and a rear spacer 21 is disposed between the rear spring 11 and the carrier 7. A lens body 23 composed of a plurality of lenses is attached to the inner side of the carrier 7.

  As shown in FIGS. 1 and 2, the front spring 9 is a substantially annular leaf spring in plan view, and is attached to an inner ring 9 a and a frame (outer cylinder portion) 6 that are attached to the front end portion (front end portion) of the carrier 7. An outer ring 9b is provided. The inner ring 9a is an annular ring, the outer ring 9b is an annular ring having a larger radius than the inner ring 9a, and an arm portion 9c is provided between the inner ring 9a and the outer ring 9b. The inner ring 9a is movable in the moving direction S (see FIG. 1) along the optical axis of the lens with respect to the outer ring 9b. Three arm portions 9c are provided at equal intervals in the circumferential direction of the front spring 9, and a position restricting portion 25 is provided between the arm portions 9c, 9c in the outer ring 9b.

  The position restricting portion 25 is provided on the inner peripheral edge of the outer ring 9b, protrudes toward the inner ring 9a, and protrudes in the moving direction S along the optical axis. When moving relative to 9b in the radial direction, the contact portion 27 provided on the outer peripheral edge of the inner ring 9a contacts the inner peripheral side end of the position restricting portion 25 to restrict the movement of the inner ring 9a. It is like that.

  The position restricting portion 25 is formed integrally with the outer ring 9b, and as shown in FIG. 2 by extracting with a one-dot chain line, both ends in the circumferential direction of the piece 30 formed by projecting from the outer ring 9b to the inner peripheral side. The portions 25a and 25b are formed by bending a crease 29 in the radial direction.

  The inner ring 9a is provided with a contact portion 27 so as to face the position restricting portion 25, and the contact portion 27 projects from the outer peripheral side edge of the inner ring 9a toward the outer ring 9b. In this embodiment, two are provided in correspondence with both end portions 25a, 25b of the two position restricting portions 25.

  As shown in detail in FIGS. 3 and 4, the rear spring 11 is a flat spring in plan view, the inner ring 11 a is annular, and the outer ring 11 b is a circle having a larger radius than the inner ring 11 a. An annular portion is provided, and an arm portion 11c is provided between the inner ring 11a and the outer ring 11b to connect the two. Three arm portions 11c are provided at equal intervals in the annular direction of the rear spring 11.

  The inner ring 11 a is fixed to the rear end 7 b of the carrier 7, and the outer ring 11 b is fixed between the base 5 a of the base 5 and the rear spacer 19.

  On the inner peripheral edge of the outer ring 11b, there is provided a position restricting portion 26 that abuts against the rear end portion 7b of the carrier 7 when the carrier 7 moves in the radial direction and restricts the movement. It protrudes toward the moving direction S along the axis. The position restricting portion 26 is integrally formed with the inner peripheral edge portion of the outer ring 11b and moves along the optical axis with a piece projecting radially from the outer ring 11b as shown in FIG. It is formed by bending in the direction S. The position restricting portion 26 is positioned so that the bent surface 26 a faces the outer peripheral edge of the rear end portion 7 b of the carrier 7.

  A contact portion 28 projects from the bottom surface (rear side surface) of the rear end portion 7 b of the carrier 7. The abutting portion 28 corresponds to the moving dimension of the carrier, and the abutting portion 28 lengthens the abutting region between the position restricting portion 26 and the rear end portion 7 b of the carrier 7.

  The front spring 9 and the rear spring 11 have the inner rings 9a and 11a and the outer rings 9b and 11b located on substantially the same plane in a state before assembly (a state where no load is applied to the springs). After assembly, the springs are assembled such that a step in the optical axis direction is generated between the inner rings 9a, 11a and the outer rings 9b, 11b so that a preload is applied to the spring in the optical axis direction.

  Next, assembly and operation effects of the lens driving device according to the present embodiment will be described. The lens driving device 1 is assembled by attaching the inner ring 11a of the rear spring 11 to the rear end 7b of the carrier 7, placing the magnet 13 and the coil 10 fixed to the carrier 7 inside the yoke 3, The outer ring 11 b of the rear spring 11 is fixed to the base portion of the base 5 via the rear spacer 21.

  Then, the inner ring 9a of the front spring 9 is attached to the tip of the carrier 7, and the outer ring 9b of the front spring 9 is disposed between the front spacer 19 and the frame 6 and fixed with the cap 15, and the frame 6 is fixed to the base 5 And the outer ring 9 b of the front spring 9 is fixed by the frame 6. Thereafter, the lens body 23 is attached to the carrier 7 to complete the assembly of the lens driving device 1.

  When a physical external force such as shaking or dropping is applied when the mobile phone is carried, when the carrier 7 receives a lateral force with respect to the outer tube portion (base 5 and frame 6), the front spring 9 When the ring 9a moves in the radial direction on the inner peripheral side of the outer ring 9b and moves by the clearance K, the contact portion 27 of the inner ring 9a contacts the position restricting portion 25 of the outer ring 9b to restrict the movement. . Accordingly, since the relative lateral movement direction of the inner ring 9a with respect to the outer ring 9b is restricted in the front spring 9, deformation of the front spring 9 due to excessive lateral movement can be prevented, and the motor characteristics of the lens driving device 1 can be prevented. Change can be prevented. The same applies to the rear spring 11.

  When the carrier 7 tries to move in the lateral direction relative to the outer cylinder portion (base 5 and frame 6), the front spring 9 is positioned such that the inner ring 9a and the outer ring 9b, which are both spring materials, come into contact with each other. Since it regulates, the impact at the time of contact can be relieved by the elasticity of the spring material.

  In particular, in the lens driving device 1, since the position restricting portion 25 is provided so as to protrude in the optical axis direction, for example, the carrier 7 moves in the optical axis direction with respect to the outer cylinder portion (base 5 and frame 6). Even when the inner ring 9a and the outer ring 9b are displaced from each other in the optical axis direction (see FIG. 6), the movement of the carrier 7 in the radial direction can be restricted.

  Also in the rear spring 11, in the movement range of the carrier rear end portion 7 b in the optical axis direction, the outer ring 11 b is provided with a position restricting portion 26 projecting in the optical axis direction with a predetermined clearance K to contact the carrier 7. Since it faces the portion 28, the movement of the carrier 7 in the lateral direction is restricted at any position in the optical axis direction of the carrier 7.

Since the movement of the front spring 9 and the rear spring 11 in the lateral direction of the carrier is restricted by the position restricting portions 25 and 26, the carrier 7 and the outer cylinder (base 5, frame) can be prevented from being deformed. 6) can be kept constant, sliding friction hardly occurs between the carrier 7 and the inner peripheral surface of the outer cylinder (base 5, frame 6), and the carrier is the optical axis of the lens. Further, the front spring 9 and the rear spring 11 can be prevented from being deformed, so that changes in motor characteristics can be prevented.

  The relative position of the outer ring 9b with respect to the inner ring 9a is restricted by the position restricting part 25 provided on the outer ring 9b of the front spring 9 and the position restricting part 26 provided on the outer ring 11b of the rear spring 11. Therefore, the clearance K between the outer tube portion (base 5 and frame 6) and the carrier 7 can be set only by each spring 9, and the outer tube portion (base 5 and frame 6) and carrier at the time of assembly can be set. Since no adjustment is required, the assembly can be facilitated.

  In the rear spring 11, the clearance K is performed between the position restricting portion 26 of the outer ring 11 b and the contact portion 28 of the carrier 7.

  In the front spring 9 and the rear spring 11, the position restricting portion 25 (26) is formed by bending a piece integrally formed with the outer ring 9b (11b). ) Can be easily manufactured by bending only one part.

  The front spring 9 is integrally formed with a position restricting portion 25 on the inner ring 9a or the outer ring 9b, and the metallic spring members made of the same material are in contact with each other to restrict the position. Further, dust and dust can be prevented from being generated due to shaving of the outer cylinder (base 5 and frame 6).

  Further, also in the rear spring 11, since the bent surface of the position restricting portion 26 abuts on the resin carrier 7, the resin material can be prevented from being scraped.

  Since the position restricting portion 25 of the front spring 9 is bent in the circumferential direction by the radial folds 29, 29, the position (clearance) of the inner peripheral side ends 25a, 25b of the one part formed on the outer ring 9b with respect to the inner ring 9a. K) does not change before and after folding. Therefore, the clearance K between the position restricting portion provided in the outer ring 9b and the inner ring 9a can be easily set, and the adjustment of the clearance K is not required when the lens driving apparatus 1 is assembled. Is easy.

  In the present embodiment, the lateral movement of the carrier 7 in the front-rear direction is restricted by the front spring 9 and the rear spring 11, so that the clearance between the carrier 7 and the frame 6, the carrier 7 and the yoke 3 The clearance between the yoke 3 and the coil 10 and the clearance between the magnet 13 and the coil 10 can be kept constant, and the carrier 7 can move smoothly in the optical axis direction of the lens.

  In the front spring 9 (the same applies to the rear spring 11), the position restricting portion 25 (26) is provided between the arm portions 9c (11c) of the spring, so the configuration is compact and simple.

  Next, another embodiment of the present invention will be described with reference to FIG. FIG. 8 is an exploded perspective view of a front spring 9 according to another embodiment. In this embodiment, the auxiliary ring 33 is provided separately from the outer ring 9b, and the auxiliary ring 33 has substantially the same diameter as the outer ring 9b and is provided on the inner periphery so as to protrude in the optical axis direction. Is provided. The auxiliary ring 33 is attached to the surface of the outer ring 9b, thereby forming the spring position restricting portion 25.

  According to this embodiment, the same operational effects as those of the above-described embodiment can be obtained, and the position restricting portion 25 can be provided by retrofitting the existing front spring.

  The present invention is not limited to the above-described embodiment, and can be variously modified without departing from the scope of the invention.

  The lens driving device 1 is not limited to a camera related to a mobile phone, but may be used for a digital camera.

  In the front spring 9, the position restricting portion 25 may be provided not on the outer ring 9b but on the outer peripheral edge of the inner ring 9a so as to protrude from the inner peripheral edge of the inner ring 9a in the optical axis direction.

  The front spring 9 may be attached to both the front side and the rear side of the carrier 7 according to the above-described embodiment, the rear spring 11 may be attached to both, and the rear spring 11 is attached to the front side. A front spring 9 may be attached to the rear side.

  The position restricting portion 25 may be provided so as to protrude in the optical axis direction with one end portion 25a facing the front side and the other end portion 25b facing the rear side.

It is the perspective view which looked at the state which attached the front side spring and the rear side spring to the carrier from the front side. It is the perspective view which looked at the front side spring from the front side. It is the perspective view which looked at the rear side spring from the front side. It is the perspective view which looked at the state which attached only the rear side spring to the carrier from the rear side. It is a disassembled perspective view of the lens drive device concerning this embodiment. It is a longitudinal cross-sectional view of a lens drive device. It is a perspective view which shows the external appearance of the whole lens drive device. It is a disassembled perspective view of the front side spring which concerns on 2nd Embodiment.

Explanation of symbols

1 Lens drive device 3 Yoke 5 Base (outer cylinder)
6 Frame (outer cylinder)
7 Carrier 9 Front spring (spring)
9a Inner ring 9b Outer ring 9c Arm 10 Coil 11 Rear spring (spring)
11a Inner ring 11b Outer ring 11c Arm part 13 Magnet 23 Lens body 25, 26 Position restricting part

Claims (7)

  A substantially cylindrical yoke, an outer cylinder part to which the yoke is attached, a substantially cylindrical carrier to which a lens is attached, a spring that supports the carrier on the inner peripheral side of the outer cylinder part, a coil, and a magnet The lens driving device drives the carrier in the direction of the optical axis of the lens with respect to the outer cylinder portion by electromagnetic force generated by energizing the coil, and the spring is a flat plate spring in plan view, and the inner ring attached to the carrier And at least one of the inner peripheral edge of the outer ring and the outer peripheral edge of the inner ring, when the inner ring moves relative to the outer ring in the radial direction. A lens driving device characterized in that a position restricting portion is provided that abuts against the lens and restricts movement in the radial direction, and the position restricting portion protrudes toward the optical axis direction of the lens.   The lens driving device according to claim 1, wherein the position restricting portion is formed by bending a piece integrally formed on the inner peripheral edge of the outer ring.   3. The lens driving device according to claim 2, wherein the position restricting portion is formed by bending a circumferential end portion of the one portion in a radial direction.   The auxiliary ring is separate from the outer ring and has an auxiliary ring with substantially the same diameter as the outer ring, and a position restricting portion protruding in the optical axis direction is provided on the inner peripheral edge of the auxiliary ring, and the auxiliary ring is provided on the outer ring surface. The lens driving device according to claim 1, wherein the lens drive device forms a spring position restricting portion.   A substantially cylindrical yoke, an outer cylinder part to which the yoke is attached, a substantially cylindrical carrier to which a lens is attached, a spring for supporting the carrier with respect to the outer cylinder part, a coil, and a magnet, A lens driving device that drives the carrier in the direction of the optical axis of the lens with respect to the outer cylinder portion by electromagnetic force generated by energizing the spring, and the spring is an annular leaf spring in plan view, an inner ring attached to the carrier, An outer ring to be attached to the outer cylinder part, and the inner peripheral edge part of the outer ring is provided with a position restricting part that abuts on the outer peripheral edge of the carrier when the carrier moves in the radial direction and restricts the movement, A lens driving device characterized in that the position restricting portion protrudes in the direction of the optical axis.   6. The position restricting portion is formed integrally with an inner peripheral edge portion of an outer ring, and is formed by bending a piece portion protruding in a radial direction from the outer ring in an optical axis direction. Lens drive device.   The spring includes a plurality of arm portions that connect the inner ring and the outer ring, and the arm portion has a circular arc portion in the circumferential direction and is provided at intervals in the annular direction of the spring, and the position restricting portion between the arm portions. The lens driving device according to claim 1, wherein the lens driving device is provided.

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