Optical member driving device, camera device and electronic device

Abstract

To provide an optical member driving device that makes the coefficient of friction in a guide mechanism less likely to increase and can be further reduced in thickness as a whole, a camera device, and an electronic apparatus.SOLUTION: An optical member driving device 10 has a guide mechanism 34 (36, 38) that guides movement of an optical member. The guide mechanism has guide parts 42, 46 including grooves 42A, 46A and slide planes 42B, 46B formed on a metal first member 22, and support parts 40, 44 formed on resin second members 24, 16 as a plurality of projections. Some projections 40A, 44A of the plurality of resin projections are fitted into the metal grooves 42A, 46A, and remaining projections 40B, 44B of the plurality of projections are in contact with the metal slide planes 42B, 46B, and thereby the support parts and the guide parts slide with each other.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an optical member driving device, a camera device, and an electronic device. [Background technology]

[0002] A small camera device is mounted on electronic devices such as mobile phones and smartphones. This type of small camera has a lens driving device, and as this lens driving device, for example, one with an image stabilization function is known, as shown in Patent Document 1. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2009-217051 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned Patent Document 1, a guide mechanism for allowing the lens to move freely is provided, and this guide mechanism includes a plurality of protrusions that come into sliding contact with the guide surface of the guide recess.

[0005] However, such a guide mechanism has a problem in that the coefficient of friction between the projection and the guide surface may become large.

[0006] The present invention aims to solve the above-mentioned problems of the conventional art and to provide an optical element driving device, a camera device, and an electronic device in which the coefficient of friction in the guide mechanism is unlikely to become large and which can be made thinner overall. [Means for solving the problem]

[0007] One aspect of the present invention is an optical element driving device, which has a guide mechanism for guiding the movement of an optical element, the guide mechanism having a guide portion including a groove and a sliding plane formed in a first metal member, and a support portion formed as a plurality of protrusions on a second resin member, wherein some of the plurality of resin protrusions fit into the metal groove and the remaining protrusions contact the metal sliding plane, causing the support portion and the guide portion to slide.

[0008] Preferably, the optical element driving device has one of the first members and two of the second members, the one first member has the guide portion on both sides in the optical axis direction of the optical element, the extension direction of the groove provided on one side of the guide portion in the optical axis direction is perpendicular to the extension direction of the groove provided on the other side of the optical axis direction, and the two second members sandwich the first member from both sides in the optical axis direction and have a support body on one side for supporting the optical element.

[0009] Preferably, the outer shape of the plate-shaped first member is rectangular, and one of the guide portions provided on both sides in the optical axis direction is formed on the surface of a protrusion that protrudes in a platform shape from the plate surface in the optical axis direction at each of the four corners of the rectangular first member.

[0010] Preferably, the other of the guide portions is formed on a rear surface of the protruding portion.

[0011] Preferably, the first member is formed as a single piece.

[0012] Preferably, the first member is formed by fixing two metal plates together, one of the two metal plates is formed with one of the guide portions provided on both sides in the optical axis direction, and the other of the two metal plates is formed with the other of the guide portions provided on both sides in the optical axis direction.

[0013] Preferably, the outer shapes of the two metal plates are both rectangular, and one of the guide portions provided on both sides in the optical axis direction is formed on the surface of a protrusion that protrudes in a platform shape in the optical axis direction from a plate-shaped surface at each of the four corners of one of the metal plates.

[0014] Another aspect of the present invention is a camera device, the camera device including the optical member driving device of the above aspect and a lens as the optical member.

[0015] Another aspect of the present invention is a camera device, the camera device including the optical member driving device of the above aspect, and an image sensor as the optical member.

[0016] Another aspect of the present invention is an electronic device, which includes the camera device of the above aspect. Effect of the Invention

[0017] According to the present invention, the first member on which the groove and sliding plane constituting the guide mechanism are formed is made of metal, and the second member on which the protrusion that fits into the groove and the protrusion that contacts the sliding plane are formed is made of resin. This makes it possible to provide an optical element drive device, a camera device, and an electronic device that are unlikely to have a large friction coefficient in the guide mechanism and can be made thinner overall. [Brief description of the drawings]

[0018] [Figure 1] 1 is a perspective view of a lens driving device according to an embodiment of the present invention, as viewed obliquely from the front. [Diagram 2] 1 is a perspective view of a lens driving device according to an embodiment of the present invention, as viewed obliquely from behind; [Diagram 3] 1 is an exploded perspective view of a lens driving device according to an embodiment of the present invention, disassembled into a fixed body and a movable body, as viewed obliquely from the front. [Figure 4] 2 is an exploded perspective view of a movable body of the lens driving device according to the first embodiment of the present invention, seen obliquely from the front. FIG. [Diagram 5]2 is an exploded perspective view of a movable body of the lens driving device according to the first embodiment of the present invention, seen obliquely from the rear. FIG. [Figure 6] 6(A) is a plan view of the second movable plate of the first embodiment of the present invention, FIG. 6(B) is a cross-sectional view taken along line VIB-VIB of FIG. 6(A), FIG. 6(C) is a cross-sectional view taken along line VIC-VIC of FIG. 6(B), and FIG. 6(D) is an enlarged view of the VID portion of FIG. 4. [Figure 7] 7(A) is a bottom view of the lens support of the first embodiment of the present invention as viewed from the rear, FIG. 7(B) is a cross-sectional view taken along line VIIB-VIIB in FIG. 7(A), FIG. 7(C) is a cross-sectional view taken along line VIIC-VIIC in FIG. 7(A), and FIG. 7(D) is an enlarged view of portion VIID in FIG. 5. [Figure 8] 1 is a plan view of a moving body according to a first embodiment of the present invention as viewed from the front. FIG. [Figure 9] 9(A) is a cross-sectional view taken along line IXA-IXA in FIG. 8, FIG. 9(B) is a cross-sectional view taken along line IXB-IXB in FIG. 8, FIG. 9(C) is a cross-sectional view taken along line IXC-IXC in FIG. 8, and FIG. 9(D) is a cross-sectional view taken along line IXD-IXD in FIG. 8. [Figure 10] FIG. 11 is a perspective view of a modified example of the first movable body plate of the first embodiment of the present invention. [Figure 11] FIG. 11 is an exploded perspective view of a moving body according to a second embodiment of the present invention, as viewed obliquely from the front. [Figure 12] FIG. 11 is an exploded perspective view of a movable body according to a second embodiment of the present invention, as viewed obliquely from the rear. [Figure 13] FIG. 11 is a plan view of a moving body according to a second embodiment of the present invention as viewed from the front. [Figure 14] 14(A) is a cross-sectional view taken along line XIIIA-XIIIA in FIG. 13, FIG. 14(B) is a cross-sectional view taken along line XIIIB-XIIIB in FIG. 13, FIG. 14(C) is a cross-sectional view taken along line XIIIC-XIIIC in FIG. 13, and FIG. 14(D) is a cross-sectional view taken along line XIIID-XIIID in FIG. 13. [Figure 15] FIG. 11 is a perspective view of a modified example of the first movable body plate of the second embodiment of the present invention. [Figure 16]FIG. 16(A) is a perspective view of an optical element driving device according to an embodiment of the present invention, as seen obliquely from the front, and FIG. 16(B) is a perspective view of the same optical element driving device, as seen obliquely from the rear. [Figure 17] 17 is a perspective view showing a state in which the case is removed from the perspective view of FIG. 16. FIG. [Figure 18] 1 is an exploded perspective view of an optical element driving device according to an embodiment of the present invention, seen obliquely from the front. [Figure 19] 1 is an exploded perspective view of an optical element driving device according to an embodiment of the present invention, seen obliquely from the rear. [Figure 20] 1 is an exploded perspective view of an optical element driving device according to an embodiment of the present invention, disassembled into its main components and viewed obliquely from the front. [Figure 21] FIG. 21(A) is a perspective view of a slider according to an embodiment of the present invention as viewed from the front, and FIG. 21(B) is a perspective view of the slider as viewed from the rear. [Figure 22] FIG. 2 is a top view of the optical element driving device according to the embodiment of the present invention. [Diagram 23] 23A is a cross-sectional view taken along line VIIIA-VIIIA in FIG. 22, and FIG. 23B is a cross-sectional view taken along line VIIIB-VIIIB in FIG. [Figure 24] 24(A) is a cross-sectional perspective view of the cross section of FIG. 23(A) seen obliquely from the front, and FIG. 24(B) is a cross-sectional perspective view of the cross section of FIG. 23(B) seen obliquely. [Diagram 25] 25(A) is a cross-sectional view taken along line XA-XA in FIG. 22, and FIG. 25(B) is a cross-sectional view taken along line XB-XB in FIG. [Figure 26] FIG. 26(A) is a perspective view of the slider of the modified example as seen from the front, and FIG. 26(B) is a perspective view of the slider of the modified example as seen from the rear. [Figure 27] 1 is a perspective view of an image sensor driving device according to an embodiment of the present invention; [Figure 28] FIG. 28 is a perspective view showing a state in which the case is removed from the perspective view of FIG. 27. [Figure 29]1 is an exploded perspective view of an image sensor driving device according to an embodiment of the present invention, seen from the front side in the optical axis direction. [Diagram 30] 1 is an exploded perspective view of an image sensor driving device according to an embodiment of the present invention, seen from the rear side in the optical axis direction. [Diagram 31] FIG. 31(A) is a perspective view of a slider according to an embodiment of the present invention as viewed from the front side in the optical axis direction, and FIG. 31(B) is a perspective view of the slider as viewed from the rear side in the optical axis direction. [Diagram 32] FIG. 2 is a front view of the optical element driving device according to the embodiment of the present invention. [Diagram 33] 33A is a cross-sectional view taken along line VIIA-VIIA in FIG. 32, and FIG. 33B is a cross-sectional perspective view taken along line VIIB-VIIB in FIG. 32 and viewed obliquely. [Diagram 34] 34(A) is a cross-sectional view taken along line VIIIA-VIIIA in FIG. 32, and FIG. 34(B) is a cross-sectional perspective view taken along line VIIIB-VIIIB in FIG. 32 and viewed obliquely. [Diagram 35] 35A is a cross-sectional view taken along line IXA-IXA in FIG. 32, and FIG. 35B is a cross-sectional perspective view taken along line IXB-IXB in FIG. 32 and viewed obliquely. [Diagram 36] 36A is a cross-sectional view taken along the line XX in FIG. 32, and FIG. 36B is a cross-sectional perspective view taken along the line XX in FIG. 32 and viewed obliquely. [Figure 37] 37A is a cross-sectional view taken along line XI-XI in FIG. 32, and FIG. 37B is a cross-sectional perspective view taken along line XI-XI in FIG. 32 and viewed obliquely. [Figure 38] FIG. 38(A) is a perspective view of a modified slider as viewed from the front side in the optical axis direction, and FIG. 38(B) is a perspective view of the modified slider as viewed from the rear side in the optical axis direction. [Figure 39] FIG. 39 is a front view of a modified image sensor driving device. [Diagram 40] 40(A) is a cross-sectional view taken along line XIVA-XIVA in FIG. 39, and FIG. 40(B) is a cross-sectional view taken along line XIVB-XIVB in FIG. [Diagram 41] 41(A) is a cross-sectional view taken along line XVA-XVA in FIG. 39, and FIG. 41(B) is a cross-sectional view taken along line XVB-XVB in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] The following embodiments of the present invention will be described with reference to the drawings. Note that the following embodiments are merely illustrative of the optical element driving device or image sensor driving device, camera device, and electronic device of the present invention, and are not intended to limit the present invention to the following embodiments.

[0020] [First embodiment] 1 to 9 show a first embodiment of a lens driving device 10 which is an optical member driving device of the present invention. The lens driving device 10 is used together with a lens adopted as an optical member in a camera device mounted on an electronic device such as a smartphone.

[0021] The lens driving device 10 has a fixed body 12 and a movable body 14 supported so as to be freely movable relative to the fixed body 12. As shown in Figures 4 and 5, the movable body 14 has a lens support 16 that supports a lens (not shown), and a first frame body 18 that surrounds the lens support 16. The lens support body 16 and the first frame body 18 have an approximately rectangular external shape when viewed from the front.

[0022] In this specification, for convenience, the optical axis direction of the lens is referred to as the Z direction, the direction perpendicular to the optical axis direction is referred to as the X direction, and the direction perpendicular to the Z direction and the X direction is referred to as the Y direction. In addition, the subject side of the optical axis is referred to as the front side, and the opposite side where an image sensor (not shown) is disposed is referred to as the rear side.

[0023] A lens mounting hole 20 that is circular when viewed from the Z direction is formed on the inside of the lens support 16, and a lens is mounted in this lens mounting hole 20.

[0024] The first frame 18 is composed of a first movable body plate 22, a second movable body plate 24, and a first cover 26. The lens support 16 and the second movable body plate 24 are made of engineering plastics such as liquid crystal polymer (LCP), polyacetal, polyamide, polycarbonate, modified polyphenylene ether, polybutylene terephthalate, etc. The first movable body plate 22 and the first cover 26 are made of metal, for example. The first movable body plate 22, the second movable body plate 24, and the first cover 26 are respectively formed with through holes 28, 30, 32 for passing light therethrough. The through holes 28, 30, 32 are each formed in a substantially circular shape.

[0025] The first frame 18 supports the lens support 16 so as to be movable in both the Y and X directions. That is, the first frame 18 has an orthogonal direction guide mechanism 34, and the lens support 16 is movable in the X and Y directions via this orthogonal direction guide mechanism 34.

[0026] The orthogonal guide mechanism 34 is composed of a first guide mechanism 36 and a second guide mechanism 38 separated in the Z direction. The first guide mechanism 36 is provided at the rear in the Z direction and includes a first guide portion 42 and a first support portion 40. The first guide portion 42 is formed on the rear surface of the first movable body plate 22 and includes a first groove 42A recessed in the +Z direction and a first sliding plane 42B. The first support portion 40 is formed as a plurality of protrusions protruding in the +Z direction on the front surface of the second movable body plate 24 and includes a first support portion 40A corresponding to the first groove 42A and a first support portion 40B corresponding to the first sliding plane 42B. The first support portion 40A and the first support portion 40B have the same shape, and as shown in FIG. 6, the dimension in the X direction is larger than the dimension in the Y direction, and the overall shape is semi-cylindrical, and both ends in the X direction are 1 / 4 spherical so as to be smoothly connected to the semi-cylindrical portion.

[0027] In the first guide mechanism 36, the first guide portion 42 and the first support portion 40 are arranged at the four corners of the first movable body plate 22 and the second movable body plate 24, which have a rectangular outer shape. Among them, the first guide portion 42 provided at both ends of the side on the -Y side on which the first magnet 54 and the magnetic member 86 are provided is formed as a V-shaped first groove 42A, and the first groove 42A extends in the X direction. The first guide portion 42 provided at both ends of the side on the opposite side on the +Y side is formed as a first sliding plane 42B, and the first sliding plane 42B spreads in the XY plane. The two first support portions 40 on the -Y side are the first support portions 40A, and fit into the first groove 42A. The two first support portions 40 on the +Y side are the first support portions 40B, and are in contact with the first sliding plane 42B. Since the first groove 42A extending in the X direction and the first support portion 40A are fitted together so as to restrict movement in the Y direction, the first movable body plate 22 is movable relative to the second movable body plate 24 only in the X direction.

[0028] 9(A) and 9(B), when viewed from the X direction, the first groove 42A is V-shaped and the first support portion 40A is semicircular. As a result, the arc-shaped curved surface portion of the first support portion 40A and the V-shaped flat surface portion of the first groove 42A are in contact with each other at two points in the cross section of the YZ plane, that is, they are in line contact with each other at two points overall.

[0029] The cross-sectional shape of the first support part 40 is preferably a shape in which the corners do not abut the bottom surface of the first groove 42A, and is semicircular, but may be semi-elliptical. The cross-sectional shape of the first groove 42A is V-shaped, but may be U-shaped. Line contact at two points allows the position of the first support part 40 in the Y direction relative to the first groove 42A to be determined without deviation.

[0030] 9(A) and 9(B), when viewed from the X direction, the first sliding plane 42B expands in the Y direction, and the first support 40B has a semicircular shape similar to the first support 40A. This allows the height of the first moving body plate 22 in the Z direction relative to the second moving body plate 24 to be determined. The width of the first sliding plane 42B in the Y direction is wider than the width of the first support 40B in the Y direction. Therefore, assembly is possible even if the dimension between the first support 40A and the first support 40B differs from the dimension between the first groove 42A and the first sliding plane 42B within the tolerance range.

[0031] In addition, the first guide portion 42 is made of metal, whereas the first support portion 40 is made of resin. This keeps the coefficient of friction small due to contact between the metal and the resin. Therefore, the coefficient of friction in the first guide mechanism 36 is unlikely to become large.

[0032] The second guide mechanism 38 is provided forward in the Z direction and includes a second guide portion 46 and a second support portion 44. The second guide portion 46 is formed on the front surface of the first movable body plate 22 and includes a second groove 46A recessed in the -Z direction and a second sliding plane 46B. The second support portion 44 is formed as a plurality of protrusions protruding in the -Z direction on the rear surface of the lens support 16 and includes a second support portion 44A corresponding to the second groove 46A and a second support portion 44B corresponding to the second sliding plane 46B. The second support portion 44A and the second support portion 44B have the same shape, and as shown in FIG. 7, the dimension in the Y direction is larger than the dimension in the X direction, and the second support portion 44A and the second support portion 44B have a semicylindrical shape as a whole, and both ends in the Y direction are 1 / 4 spherical so as to be smoothly connected to the semicylindrical portion.

[0033] In the second guide mechanism 38, the second guide portion 46 and the second support portion 44 are arranged at the four corners of the rectangular lens support 16 and the first movable body plate 22. Among them, the second guide portion 46 provided at both ends of the side on the +X side where the first magnet 54 and the magnetic member 86 are provided is formed as a V-shaped second groove 46A, and the second groove 46A extends in the Y direction. The second guide portion 46 on the opposite side, the -X side, is formed as a second sliding plane 46B, and the second sliding plane 46B spreads in the XY plane. The two second support portions 44 on the +X side are second support portions 44A, and fit into the second groove 46A. The two second support portions 44 on the -X side are second support portions 44B, and are in contact with the second sliding plane 46B. Since the second groove 46A extending in the Y direction and the second support portion 44A are fitted together to restrict movement in the X direction, the lens support 16 is movable only in the Y direction relative to the first movable body plate 22. The first guide mechanism 36 and the second guide mechanism 38 allow the lens support 16 to move in the X and Y directions relative to the second movable body plate 24.

[0034] 9(C) and 9(D), when viewed from the Y direction, the second groove 46A is V-shaped and the second support portion 44A is semicircular. As a result, the arc-shaped curved surface portion of the second support portion 44A and the V-shaped flat surface portion of the second groove 46A are in contact with each other at two points in the cross section of the XZ plane, that is, they are in line contact with each other at two points overall.

[0035] The cross-sectional shape of the second support portion 44A is preferably a shape in which the corners do not come into contact with the bottom surface of the second groove 46A, and is semicircular, but may be semi-elliptical. The cross-sectional shape of the second groove 46A is V-shaped, but may be U-shaped. Line contact at two points allows the position of the second support portion 44A in the X direction relative to the second groove 46A to be determined without deviation.

[0036] 9(C) and 9(D), when viewed from the Y direction, the second sliding plane 46B expands in the X direction, and the second support portion 44B has a semicircular shape similar to the second support portion 44A. This allows the height of the lens support 16 in the Z direction relative to the first movable body plate 22 to be determined. The width of the second sliding plane 46B in the X direction is wider than the width of the second support portion 44B in the X direction. Therefore, assembly is possible even if the dimension between the second support portion 44A and the second support portion 44B differs from the dimension between the second groove 46A and the second sliding plane 46B within the tolerance range.

[0037] In addition, the second guide portion 46 is made of metal, whereas the second support portion 44 is made of resin. This keeps the coefficient of friction small due to contact between the metal and the resin. Therefore, the coefficient of friction in the second guide mechanism 38 is unlikely to become large.

[0038] The first moving body plate 22 including the first guide portion 42 and the second guide portion 46 is formed of a non-magnetic metal, for example, an aluminum alloy, so as to be a plate-shaped member of a predetermined thickness. For example, it may be formed by an aluminum die-casting method in which molten aluminum alloy is poured into a mold. Furthermore, the surfaces of the first guide portion 42 and the second guide portion 46 may be subjected to a mirror finish by polishing or a chemical polishing process to reduce the surface roughness and the friction coefficient. A lubricant may be interposed between the first guide portion 42 and the first support portion 40, and between the second guide portion 46 and the second support portion 44. The first moving body plate 22 may be manufactured by a powder metallurgy method, and the porous metal body such as copper may be impregnated with a lubricant.

[0039] As shown in FIG. 5, the first groove 42A of the first guide portion 42 is formed so as to be recessed in the +Z direction from the plate surface on the -Z side of the first movable body plate 22. The first sliding plane 42B is formed parallel to the plate surface of the first movable body plate 22 at a position recessed in the +Z direction from the plate surface on the -Z side of the first movable body plate 22. The position of the first sliding plane 42B is shallower than the groove depth of the first groove 42A. As shown in FIG. 4, the first groove 46A and the second sliding plane 46B of the second guide portion 46 are formed in a protruding portion protruding in the +Z direction in a platform shape from the plate surface on the +Z side of the first movable body plate 22, and among them, the second sliding plane 46B is formed parallel to the plate surface of the first movable body plate 22. The position of the second sliding plane 46B is shallower than the groove depth of the second groove 46A.

[0040] The structures of the first guide mechanism 36 and the second guide mechanism 38 of the orthogonal direction guide mechanism 34 described above can also be explained as follows. The first guide mechanism 36 has a first guide section 42 including a first groove 42A and a first sliding plane 42B formed in the first mover plate 22 as a first member, and a first support section 40 formed as a protrusion on the second mover plate 24 as a second member. The first support section 40A fits into the first groove 42A of the first guide section 42, and the first support section 40B contacts the first sliding plane 42B of the first guide section 42, so that the first guide section 42 and the first support section 40 slide. The first mover plate 22 is made of metal, and the second mover plate 24 is made of resin.

[0041] The second guide mechanism 38 has a second guide section 46 including a second groove 46A and a second sliding plane 46B formed in the first movable body plate 22 as the first member, and a second support section 44 formed as a protrusion on the lens support 16 as the second member. The second support section 44A fits into the second groove 46A of the second guide section 46, and the second support section 44B contacts the second sliding plane 46B of the second guide section 46, so that the second guide section 46 and the second support section 44 slide. The first movable body plate 22 is made of metal, and the lens support 16 is made of resin.

[0042] In the orthogonal direction guide mechanism 34, the first movable body plate 22, which is a first member, has a first guide portion 42 and a second guide portion 46 on both sides in the optical axis direction of the lens, which is an optical member. The second movable body plate 24, which is a second member, and the lens support 16 sandwich the first movable body plate 22 from both sides in the optical axis direction, and one of the two second members is the lens support 16 for supporting the lens. The extending directions of the first groove 42A of the first guide portion 42 and the second groove 46A of the second guide portion 46 provided in the first movable body plate 22 are perpendicular to each other.

[0043] Mounting portions 48 are provided at the four corners of the first cover 26 so as to extend rearward in the Z direction. Square mounting holes 50 are formed in the mounting portions 48. Mounted portions 52 are formed at the four corners of the second movable body plate 24 so as to protrude laterally. The mounting holes 50 fit into the mounted portions 52, and the first cover 26 is fixed to the second movable body plate 24.

[0044] A first magnet 54 and a first yoke 56 are fixed on the +X side and -Y side of the outer side of the lens support 16. The first magnet 54 on the +X side has an S pole and an N pole formed in the X direction. The first magnet 54 on the -Y side has an S pole and an N pole formed in the Y direction.

[0045] In addition, a second magnet 58 and a second yoke 60 are fixed to the +Y side of the second movable body plate 24. This second magnet 58 is divided into two in the Z direction, and each is formed with an S pole and an N pole in the Y direction, and the polarities are reversed at the front and rear. In addition, magnetic members 86, 86 are fixed to the +X side and -Y side of the bottom surface of the second movable body plate 24 in correspondence with the rear of the first magnets 54, 54. As a result, the lens support 16 is attracted to the second movable body plate 24 together with the first movable body plate 22, and the movable body 14 is integrated into a single member.

[0046] Next, the relationship between the fixed body 12 and the movable body 14 will be described. The fixed body 12 has a second frame 62. This second frame 62 surrounds the periphery of the first frame 18 of the movable body 14. This second frame 62 has a base 64 and a second cover 66 attached to this base 64. The base 64 and the second cover 66 are rectangular when viewed from the front, and the second frame 62 is configured by fitting the second cover 66 to the outside of the base 64. In addition, through holes 72, 74 for passing light or inserting a lens are formed in a bottom surface portion 68 of the base 64 and a front surface portion 70 of the second cover 66.

[0047] Further, at the four corners of the base 64, a support portion 76 is formed that is divided into two parts with the corners in between, rising forward from the bottom surface portion 68. A flexible printed circuit board 78 is disposed on the outside of the base 64 so as to surround the support portion 76. The flexible printed circuit board 78 is bent into a quadrangle so as to surround the outer shape of the base 64 and fixed to the support portion 76, and a terminal portion 80 is formed at the rear portion of the flexible printed circuit board 78. The supply of electricity to a first coil 82 and a second coil 84, which will be described later, is controlled via the terminal portion 80, but the present invention is not limited to this.

[0048] A first coil 82 is fixed to the +X side and -Y side on the inside of flexible printed circuit board 78. In addition, a second coil 84 is fixed to the +Y side on the inside of flexible printed circuit board 78. The first coil 82 faces first magnet 54, and the second coil 84 faces second magnet 58.

[0049] Furthermore, a magnetic member 86 made of a magnetic material is provided on the outside of the +Y side of the flexible printed circuit board 78. This magnetic member 86 faces the second magnet 58 with the flexible printed circuit board 78 and the second coil 84 sandwiched between them. Since magnetic flux from the second magnet 58 flows through the magnetic member 86, an attractive force is generated between the second magnet 58 and the magnetic member. As a result, an attractive force acts on the movable body 14 in the +Y direction toward the fixed body 12.

[0050] The movable body 14 is supported by an optical axis direction support mechanism 88 so as to be movable in the Z direction relative to the fixed body 12. The optical axis direction support mechanism 88 is composed of a main guide shaft 90 and a sub guide shaft 92 provided on the base 64, and a guide hole 94 and a guide wall 96 provided in the movable body 14. By passing a current through the second coil 84, the movable body 14 moves together with the lens support 16 in the Z direction relative to the fixed body 12.

[0051] In the above configuration, when electricity is applied to the first coil 82 facing the first magnet 54 on the +X side, a Lorentz force in the X direction acts on the first coil 82. Since the first coil 82 is fixed to the base 64, the reaction force acting on the first magnet 54 becomes a driving force for the lens support 16 and the first movable body plate 22, and the lens support 16 and the first movable body plate 22 move in the X direction while being supported by the first guide mechanism 36.

[0052] In the first guide mechanism 36, the first guide portion 42 and the first support portion 40 slide against each other. Since the first guide portion 42 is made of metal and the first support portion 40 is made of resin, the coefficient of friction is kept small and they slide against each other smoothly.

[0053] Furthermore, when current is applied to the first coil 82 facing the first magnet 54 on the -Y side, a Lorentz force in the Y direction acts on the first coil 82. Because the first coil 82 is fixed to the base 64, the reaction force acting on the first magnet 54 becomes a driving force for the lens support 16, and the lens support 16 moves in the Y direction while being supported by the second guide mechanism 38.

[0054] In the second guide mechanism 38, the second guide portion 46 slides on the second support portion 44. Since the second guide portion 46 is made of metal and the second support portion 44 is made of resin, the coefficient of friction is kept small and they slide smoothly against each other.

[0055] After the lens support 16 has moved in at least one of the X-direction and Y-direction, the supply of current to the first coil 82 is stopped. Then, due to the attractive force between the first magnets 54, 54 and the magnetic members 86, 86 and the friction between the first guide portion 42 and the first support portion 40, and between the second guide portion 46 and the second support portion 44, the lens support 16 stops at the position where the supply of current was stopped.

[0056] In the first embodiment, the first guide portion 42 and the second guide portion 46 are formed on the first movable body plate 22 made of metal. Also, an example has been described in which the first support portion 40 is formed on the second movable body plate 24 made of resin so as to face them, and the second support portion 44 is formed on the lens support 16 made of resin. The first guide portion 42 and the second guide portion 46 are formed of metal members, and the first support portion 40 and the second support portion 44 are formed of resin members. Therefore, the coefficient of friction between the first guide portion 42 and the first support portion 40 and between the second guide portion 46 and the second support portion 44 is kept small, and the frictional force is also small, so that they slide smoothly against each other. According to this configuration, in the case of sliding between resins, the coefficient of friction is about 0.2 even when a lubricant is used, whereas in the case of sliding between metal and resin, the coefficient of friction is about 0.1. Thus, since the frictional force is small, the required driving force is smaller than that of a structure that does not have a sliding surface between resin and metal, and the power consumption for driving can be reduced.

[0057] Moreover, since the first moving body plate 22 is entirely made of metal, it is possible to reduce the thickness in the Z direction, and it is possible to make the entire lens driving device 10 thinner.

[0058] 10, a slit 22A expanding in the XY directions may be provided as a gap between the first guide portion 42 and the second guide portion 46, and connected to the main body portion of the first moving body plate 22 only on one predetermined side. This allows the portion of the first moving body plate 22 where the first guide portion 42 and the second guide portion 46 are provided to elastically deform when an impact is received, cushioning the impact and suppressing damage to the first support portion 40 and the second support portion 44, as in a second embodiment described later.

[0059] [Second embodiment] In the above first embodiment, the first movable body plate 22 is configured as a single metal member cast by aluminum die casting or the like, but the present invention is not limited to the above embodiment. The first movable body plate may be formed by integrating two metal plates as in the second embodiment described below. In that case, a first guide portion is formed on one of the two metal plates, and a second guide portion is formed on the other of the two metal plates. Hereinafter, a lens driving device 10' of the second embodiment will be described with reference to Figs. 11 to 14. The lens driving device 10' of the second embodiment is the same as the lens driving device 10 of the first embodiment, except for the configuration of the first movable body plate 98. Therefore, the same configurations will be described using the same reference symbols, and detailed descriptions thereof will be omitted.

[0060] 11 and 12, the first movable body plate 98 is formed by two metal plates, a rear metal plate 100 arranged on the -Z side and a front metal plate 102 arranged on the +Z side, overlapping in the Z direction. The rear metal plate 100 and the front metal plate 102 are substantially rectangular, with first guide portions 104 formed at the four corners of the rear metal plate 100 and second guide portions 106 formed at the four corners of the front metal plate 102.

[0061] The front metal plate 102 and the rear metal plate 100 are integrated by a fastening method such as welding, crimping, screwing, or adhesive, except for the first guide portion 104 and the second guide portion 106. Furthermore, the rear metal plate 100 in the first guide portion 104 and the front metal plate 102 in the second guide portion 106 overlap with a gap provided in the optical axis direction, as described below.

[0062] The first guide portion 104 provided at both ends of the side on the -Y side where the first magnet 54 and the magnetic member 86 are provided is formed as a V-shaped first groove 104A, and the first groove 104A extends in the X direction. The first guide portion 104 provided at both ends of the side on the opposite side on the +Y side is formed as a first sliding plane 104B, and the first sliding plane 104B spreads in the XY plane. The first groove 104A is formed by being recessed directly from the plate surface of the rear metal plate 100 in the +Z direction, and the first sliding plane 104B is formed at a position recessed from the plate surface of the rear metal plate 100 in the +Z direction. The first grooves 104A of the first guide portion 104 are all connected to the main body of the first movable body plate 98 only on the +Y side. Moreover, the first sliding plane 104B of the first guide portion 104 is connected to the main body of the first movable body plate 98 only on the -Y side. The position of the first sliding plane 104B is shallower than the depth of the first groove 104A. The first groove 104A and the first sliding plane 104B are formed by bending the plate-shaped rear metal plate 100.

[0063] The two first support portions 40A on the -Y side fit into the first groove 104A, and the two first support portions 40B on the +Y side contact the first sliding plane 104B. Since the first groove 104A extending in the X direction and the first support portions 40A fit together to restrict movement in the Y direction, the first movable body plate 98 is movable only in the X direction relative to the second movable body plate 24. Although an example in which the first groove 104A is formed as a V-shaped groove has been described, it may be formed as a U-shaped groove.

[0064] The second guide parts 106 provided at both ends of the side on the +X side where the first magnet 54 and the magnetic member 86 are provided are formed as V-shaped second grooves 106A, and the second grooves 106A extend in the Y direction. The second guide parts 106 provided at both ends of the side on the opposite side on the -X side are formed as second sliding planes 106B, and the second sliding planes 106B extend in the XY plane. These second guide parts 106 are formed in protruding parts that protrude in a platform shape in the +Z direction from the plate surface of the front metal plate 102. This protruding part is formed by bending the plate-shaped front metal plate 102. The second grooves 106A are formed by further bending this protruding part. The second sliding planes 106B are flat surfaces of this protruding part. The second grooves 106A of the second guide parts 106 are all connected to the main body of the first movable body plate 98 only on the -X side. Also, the second sliding plane 106B of the second guide portion 106 is connected only on the +X side to the main body of the first movable body plate 98. The position of the second sliding plane 106B is located at a position shallower than the groove depth of the second groove 106A.

[0065] The two second support portions 44A on the +X side are fitted into the second groove 106A, and the two second support portions 44B on the -X side are in contact with the second sliding plane 106B. Since the second groove 106A extending in the Y direction and the second support portions 44A are fitted together so as to restrict movement in the X direction, the lens support 16 is movable only in the Y direction relative to the first movable body plate 22. This allows the lens support 16 to move in the X and Y directions relative to the second movable body plate 24. Although an example in which the second groove 106A is formed as a V-shaped groove has been described, it may be formed as a U-shaped groove.

[0066] As described above, the rear metal plate 100 of the first guide portion 104 and the front metal plate 102 of the second guide portion 106 overlap with a gap provided in the optical axis direction. As a result, when an impact is applied, at least one of the first guide portion 104 and the second guide portion 106 bends to absorb the impact, thereby suppressing damage to the first support portion 40 and the second support portion 44 made of resin.

[0067] Specifically, the groove depth of the first groove 104A, the groove depth of the second groove 106A, and the height of the protruding portion are determined so that the rear metal plate 100 in the first guiding portion 104 and the front metal plate 102 in the second guiding portion 106 do not come into contact with each other. These dimensions are determined in consideration of the dimensional tolerance, as well as the weight, deflection due to the attractive force of the first magnet 54 and the magnetic member 86, deflection during normal use, deflection due to impact, and the like. As for the other portions, the position of the first sliding plane 104B is shallower than the groove depth of the first groove 104A, and the position of the second sliding plane 106B is shallower than the groove depth of the second groove 106A, so that a sufficient gap can be ensured.

[0068] The operation of the orthogonal guide mechanism 34 in the XY direction of the second embodiment described above is substantially the same as that of the orthogonal guide mechanism 34 in the first embodiment, so detailed description will be omitted. Assume that a force in the +Z direction is applied to the orthogonal guide mechanism 34 in the second embodiment described above. That is, in this case, the second movable body plate 24 pushes the first movable body plate 98 in the +Z direction, and the first movable body plate 98 pushes the lens support 16 in the +Z direction. In the first guide mechanism 36, in a state where the first support portion 40A on the -Y side is fitted into the first groove 104A and the first support portion 40B on the +Y side is in contact with the first sliding plane 104B, the first support portion 40 of the second movable body plate 24 bends and deforms the rear metal plate 100 in the +Z direction at the portion where the first guide portion 104 is formed.

[0069] In addition, in the second guide mechanism 38 of the orthogonal direction guide mechanism 34, with the second support portion 44A on the +X side fitted into the second groove 106A and the second support portion 44B on the -X side contacting the second sliding plane 106B, the front metal plate 102 in the portion where the second guide portion 106 is formed deforms while flexing in the -Z direction to press the second support portion 44 of the lens support 16.

[0070] At this time, there is a gap between the rear metal plate 100 where the first guide portion 104 is formed and the front metal plate 102 where the second guide portion 106 is formed. Therefore, the rear metal plate 100 where the first guide portion 104 is formed can bend and deform in the +Z direction, and the front metal plate 102 where the second guide portion 106 is formed can bend and deform in the -Z direction, and the two do not come into contact with each other. Therefore, the first guide portion 104 and the second guide portion 106 can be sufficiently elastically deformed and can absorb impact. Note that when a force is applied in the -Z direction, the gap between the rear metal plate 100 where the first guide portion 104 is formed and the front metal plate 102 where the second guide portion 106 is formed is similarly deformed to narrow.

[0071] The first guide portion 104 and the second guide portion 106 do not have to overlap when viewed from the Z direction. As shown in the modified example of FIG. 15, the first guide portion 104 and the second guide portion 106 are provided at the four corners of the rectangular first movable body plate 98. However, the first guide portion 104 is arranged at both ends of the ±X side, and the second guide portion 106 is arranged at both ends of the ±Y side, so that they do not overlap. Slits 98A are provided between the first guide portion 104 and the second guide portion 106 and the main body portion of the first movable body plate 98. As a result, the first guide portion 104 having the first groove 104A formed therein is connected to the main body portion of the first movable body plate 98 only on the +Y side, and the first guide portion 104 having the first sliding plane 104B formed therein is connected to the main body portion of the first movable body plate 98 only on the -Y side. In addition, the second guide portion 106 having the second groove 106A formed therein is connected to the main body portion of the first movable body plate 98 only on the -X side, and the second guide portion 106 having the second sliding plane 106B formed therein is connected to the main body portion of the first movable body plate 98 only on the +X side.

[0072] In this modification, it is not necessary to integrate two metal plates, and for example, they can be formed from one metal plate by pressing or the like. In addition, by not overlapping the first guide portion 104 and the second guide portion 106, there is no restriction in the height direction, and the plate surface of the metal plate can be directly used as the first sliding plane 104B and the second sliding plane 106B, so that the first sliding plane 104B and the second sliding plane 106B are at the same height as the main body of the first moving body plate 98. Therefore, the first groove 104A and the second groove 106A can also be formed without providing a protruding portion. That is, the first guide portion 104 and the second guide portion 106 extend from the main body of the first moving body plate 98 in the plate surface direction without providing a protruding portion. The first moving body plate 98 of this modification may be manufactured by other methods such as casting.

[0073] In the above first and second embodiments, the lens driving device 10 used in a camera device mounted on an electronic device such as a mobile phone or a smartphone has been described, but the present invention can also be applied to other devices.

[0074] In the above first and second embodiments, a guide mechanism in which a groove is made of metal and a protrusion that fits into the groove is made of resin is applied to an orthogonal direction guide mechanism for camera shake correction that moves a lens support in a direction orthogonal to the optical axis direction of the lens. Furthermore, the present invention may be applied to, for example, an optical axis direction support mechanism for autofocus that supports a fixed body 12 and a movable body 14 that moves relatively to the fixed body 12 in the optical axis direction of the lens. Also, for example, the present invention may be applied to an orthogonal direction guide mechanism for camera shake correction that employs an image sensor as an optical member and moves it in a direction orthogonal to the optical axis.

[0075] For example, in the former case, the guide mechanism is replaced with the optical axis direction support mechanism 88, and a guide portion formed as a groove extending in the Z direction and a sliding plane extending in the ZX direction is formed on a first member made of metal, and a support portion formed as a protrusion is provided on a second member made of resin. The first member may be provided as the fixed body 12, and the second member may be provided as the movable body 14.

[0076] [Third embodiment] 16 to 25 show a third embodiment of the optical element driving device 110 of the present invention. The optical element driving device 110 accommodates a lens (not shown) and an image sensor 128 and is used in a camera device mounted on an electronic device such as a smartphone.

[0077] In the following description, the direction parallel to the optical axis of a lens (not shown) is referred to as the optical axis direction or Z direction, and two directions perpendicular to the Z direction and perpendicular to each other are referred to as the X direction and the Y direction. In the Z direction, the subject side is referred to as the +Z side or front side, and the image sensor 128 side is referred to as the -Z side or rear side. In addition, the following description will be mainly based on Figures 18 and 19, and the figure numbers will be supplemented as necessary.

[0078] The optical element driving device 110 includes a base 120, a case 112 fixed to the base 120, a sub-base 114 fixed to the case 112, and a lens carrier 116 arranged inside the sub-base 114. The lens carrier 116 holds a lens (not shown) and is supported so as to be freely movable in the optical axis direction of the lens.

[0079] Optical element driving device 110 further includes a sensor holder 124 supported for movement in a direction perpendicular to the optical axis direction, and a slider 196 disposed between sensor holder 124 and base 120. Sensor holder 124 holds an image sensor 128 fixed to a first flexible printed circuit board (hereinafter referred to as first FPC (flexible printed circuit)) 126.

[0080] As shown in Figures 16(A) and 16(B), the case 112 has a box-like shape having a front panel 130 that is approximately rectangular when viewed from the Z direction and a side wall 134 extending from its periphery in the -Z direction, and the front panel 130 has a through hole 136 for passing light therethrough and four mounting holes 148 formed around the through hole 136.

[0081] The sub-base 114 has a box-like shape having a bottom plate 138 that is substantially rectangular when viewed from the Z direction, and side walls 140 that extend in the +Z direction from the periphery of three sides of the bottom plate 138 excluding the -Y side. The lens carrier 116 is housed in the space surrounded by the bottom plate 138 and the side walls 140. The -Y side of the sub-base 114 is an opening 142. The bottom plate 138 is formed with a through hole 144 for passing light. Mounting protrusions 146 are formed at the front ends of the four corners of the side walls 140, and the sub-base 114 is fixed to the case 112 by fitting into the mounting holes 148.

[0082] The lens carrier 116 has a rectangular parallelepiped shape that is approximately rectangular when viewed from the Z direction, and a circular through-hole 132 to which a lens (not shown) is attached is formed penetrating from the front side to the rear side. The lens carrier 116 is made of resin. A plate-shaped third magnet 1112 and a third yoke 1114 are fixed to the -Y side of the lens carrier 116. The third magnet 1112 is divided into two parts, the front side and the rear side in the Z direction, and an S pole and an N pole are provided on the plate surface, and the magnetization is such that the polarities are opposite between the front and the rear.

[0083] The optical axis direction guide mechanism 118 is composed of two guide shafts 152 attached to fixing holes 150 provided at both ends on the -Y side of the bottom plate 138 of the sub-base 114, and corresponding guide holes 154 provided at both ends on the -Y side of the lens carrier 116, through which the guide shafts 152 are inserted.

[0084] The guide shaft 152 has a cylindrical shape extending in the Z direction and is made of, for example, ceramic or metal. When made of metal, the sub-base 114 can be formed by insert molding and fixed to the insert metal by welding or the like.

[0085] The guide hole 154 is formed as a hollow through hole penetrating from the front surface to the rear surface of the lens carrier 116. The cross-sectional shape in the XY direction of the guide hole 154 located on the -X side is a V-shape with the +Y side portion opening toward the -Y side, and the -Y side portion is rectangular. The cross-sectional shape of the -Y side portion may be semicircular. The guide hole 154 is in line contact with the outer surface of the guide shaft 152 at two points of the V-shape. This allows the lens carrier 116 to be accurately positioned in the X and Y directions relative to the sub-base 114.

[0086] The guide hole 154 located on the +X side includes at least two wall surfaces facing each other in the Y direction in the XY cross section. These two wall surfaces protrude in a curved shape so that their central portions in the Z direction are closest to each other, and the outer surface of the guide shaft 152 and the central portion in the Z direction of the +Y side wall surface come into point contact at one point, thereby reducing frictional resistance. With this configuration, the lens carrier 116 is supported movably in the optical axis direction relative to the sub-base 114.

[0087] A second flexible printed circuit board (hereinafter referred to as second FPC (flexible printed circuit)) 1116 is disposed so as to surround the outside of three sides of sub-base 114. Second FPC 1116 is disposed by being bent into a U-shape on the outside of side wall 140 on the +Y side of sub-base 114, the outside of side wall 140 on the +X side, and at opening 142 on the -Y side. Second FPC 1116 has input / output section 1126 drawn out in the -Y direction from the front part on the -Y side through through hole 136 of case 112, and current supply, signal output, etc. are performed via input / output section 1126.

[0088] A first coil 1118 is fixed to the outer surface on the +Y side of the second FPC 1116, and a second coil 1120 is fixed to the outer surface on the +X side. A third coil 1122 is fixed to the inner surface on the -Y side of the second FPC 1116 so as to face the third magnet 1112. A fifth yoke 1124 is fixed to the outer surface on the -Y side of the second FPC 1116 so as to face the third magnet 1112 with the third coil 1122 sandwiched therebetween. Therefore, an attractive force acts between the third magnet 1112 and the fifth yoke 1124, and a force in the -Y direction acts on the lens carrier 116, pressing it against the two guide shafts 152.

[0089] A Y-direction position detection element 1128 is disposed inside the windings of the first coil 1118 and faces the first magnet 1104, and an X-direction position detection element 1130 is disposed inside the windings of the second coil 1120 and faces the second magnet 1106. A Z-direction position detection element 1132 is disposed inside the second FPC 1116 and adjacent to the third coil 1122 and faces the third magnet 1112.

[0090] The base 120 has a bottom plate 156 that is substantially rectangular when viewed from the Z direction and has a through hole 162 in the center, a fixing protrusion 158 that protrudes in the +Z direction from the periphery of the bottom plate 156, and an FPC fixing wall 160 that protrudes in the +Z direction from the center of the periphery on the -Y side of the bottom plate 156 higher than the fixing protrusion 158. The base 120 is made of resin. The side wall 134 of the case 112 is fitted around the fixing protrusion 158 to combine the case 112 and the base 120.

[0091] 20, fourth yoke fixing portions 164 are formed on the inside of fixing protrusions 158 on the +X side and +Y side, respectively, and a fourth yoke 166 is fixed thereto. Also, first support protrusions 194A and 194B of the orthogonal direction guide mechanism 122 made of resin are provided on the inside of fixing protrusions 158 at the four corners of the bottom plate 156. A bottom cover 168 is attached to the base 120 so as to cover the through hole 162 from the -Z side.

[0092] The sensor holder 124 has a bottom plate portion 172 that is substantially rectangular when viewed from the Z direction and has a through hole 170 in the center, and a side plate portion 174 that protrudes in the +Z direction from the middle between the outer edge and the inner edge of the bottom plate portion 172. The image sensor 128 is exposed to the front side through the through hole 170, and the side plate portion 174 surrounds the sub-base 114 from the outside. The sensor holder 124 is made of resin. The sub-base 114 and the members attached thereto are disposed at a distance from the sensor holder 124 and the members attached thereto.

[0093] A plate-shaped first magnet 1104 and a first yoke 1108 are fixed to the inner surface of the side plate portion 174 on the +Y side, and face the first coil 1118. The first magnet 1104 is magnetized so that the surface facing the first coil 1118 becomes the N pole or the S pole. A plate-shaped second magnet 1106 and a second yoke 1110 are fixed to the inner surface of the side plate portion 174 on the +X side, and face the second coil 1120. The second magnet 1106 is magnetized so that the surface facing the second coil 1120 becomes the N pole or the S pole. A fourth magnet fixing portion 176 is formed on the periphery of the +X side and +Y side of the rear side surface of the bottom plate portion 172, and a plate-shaped fourth magnet 178 facing the fourth yoke 166 is fixed thereto, and the sensor holder 124 and the base 120 are attracted to each other.

[0094] The outer edge of the bottom plate portion 172 on the +Y side has recesses 172A recessed inward on both sides of the fourth magnet fixing portion 176. The corners of three sides of the outer edge of the bottom plate portion 172 excluding the -Y side are provided with protrusions 172B protruding in the +Z direction. The corners of the outer edge of the bottom plate portion 172 function as stoppers. Second support protrusions 1100A and 1100B of the orthogonal direction guide mechanism 122 made of resin are provided at the four corners of the rear side surface of the bottom plate portion 172.

[0095] The first FPC 126 has a flat plate portion 180 having a substantially rectangular shape when viewed from the Z direction and a pair of strip portions 184, and the image sensor 128 is placed on the flat plate portion 180. The strip portions 184 extend in the +Z direction from the edge portion on the +Y side of the flat plate portion 180, pass through the recess 172A, and extend toward the -Y side along the outer periphery of the side plate portion 174 of the sensor holder 124. The pair of strip portions 184 are arranged symmetrically with respect to a plane that passes through the center of the first FPC 126 in the X direction and is parallel to the YZ direction. The front side surface of the flat plate portion 180 of the first FPC 126 is fixed to the rear side surface of the sensor holder 124, and the strip portions 184 are fixed to the outer surface of the FPC fixing wall 160 of the base 120. As shown in Figures 24(A) and 24(B), band-shaped portion 184 is located between side plate portion 174 and convex portion 172B on the outer edge of bottom plate portion 172, with a gap therebetween, and the rear end of band-shaped portion 184 is located rearward of the front end of convex portion 172B, and therefore the effect of band-shaped portion 184 on the movement of sensor holder 124 is small.

[0096] The first FPC 126 is pulled out in the -Y direction from the -Z side of this fixed strip-shaped portion 184 to form a terminal portion 182, and current is supplied to the image sensor 128, signals are output, etc. via the terminal portion 182. Therefore, the second FPC 1116 and the first FPC 126 are each pulled out in the -Y direction, and only one side of the optical element driving device 110 can be connected to the outside.

[0097] The slider 196 is disposed between the base 120 and the sensor holder 124, and is a plate-like metal member that is substantially rectangular when viewed from the Z direction and has a through hole 1102A in the center. Recesses 1102B recessed toward the -Y and -X sides are formed on one side of the outer edge of the slider 196 on the +Y side and one side on the +X side, respectively, and accommodate the fourth yoke fixing part 164. A first guide groove 192A and a first guide plane 192B of the orthogonal direction guide mechanism 122 are formed at the four corners of the rear side of the slider 196, and a second guide groove 198A and a second guide plane 198B are formed at the four corners of the front side.

[0098] The orthogonal direction guide mechanism 122 has a first guide mechanism 188 provided on the -Z side and a second guide mechanism 190 provided on the +Z side. The first guide mechanism 188 includes a first guide portion 192 and a first support portion 194. The first guide portion 192 is formed on the rear side surface of the slider 196 and includes a V-groove-shaped first guide groove 192A recessed in the +Z direction and extending in the X direction, and a first guide plane 192B parallel to the XY directions. The first support portion 194 includes a first support protrusion 194A corresponding to the first guide groove 192A formed on the front side surface of the bottom plate 156 of the base 120 protruding in the +Z direction, and a first support protrusion 194B corresponding to the first guide plane 192B. The first support protrusions 194A and 194B have the same shape, the dimension in the X direction is larger than the dimension in the Y direction, at least the tip portion has a semi-cylindrical shape as a whole, and both ends in the X direction are 1 / 4 spherical so as to smoothly connect with the semi-cylindrical portion.

[0099] The first guide groove 192A and the first support protrusion 194A are provided at both ends of the side on the +Y side, and the first guide plane 192B and the first support protrusion 194B are provided at both ends of the side on the -Y side. As shown in Fig. 25(A) and Fig. 25(B), in a cross section parallel to the YZ plane, the first support protrusion 194A and the first guide groove 192A contact and slide at two points, and the first support protrusion 194B and the first guide plane 192B contact and slide at one point. Overall, the first support protrusion 194A and the first guide groove 192A slide in line contact at two points, and the first support protrusion 194B and the first guide plane 192B slide in line contact at one point. Since the first guide groove 192A extending in the X direction and the first support protrusion 194A are fitted together so as to restrict movement in the Y direction, the slider 196 is movable relative to the base 120 only in the X direction.

[0100] Also, the Z-direction top of the first support protrusion 194B comes into contact with the first guide plane 192B that spreads in the XY directions. This allows the Z-direction height of the slider 196 relative to the base 120 to be determined. Also, the Y-direction width of the first guide plane 192B is wider than the Y-direction width of the first support protrusion 194B. Therefore, assembly is possible even if the dimension between the first support protrusion 194A and the first support protrusion 194B differs within the tolerance range from the dimension between the first guide groove 192A and the first guide plane 192B.

[0101] The second guide mechanism 190 includes a second guide portion 198 and a second support portion 1100. The second guide portion 198 includes a V-groove-shaped second guide groove 198A recessed in the -Z direction and extending in the Y direction, and a second guide plane 198B parallel to the XY directions, which are formed on a platform-shaped protruding portion protruding in the +Z direction on the front side surface of the slider 196. The second support portion 1100 includes a second support protrusion 1100A corresponding to the second guide groove 198A formed protruding in the -Z direction on the rear side surface of the sensor holder 124, and a second support protrusion 1100B corresponding to the second guide plane 198B. ​​The second support protrusion 1100A and the second support protrusion 1100B have the same shape, and are the same as the first support protrusion 194A and the first support protrusion 194B, except that the dimension in the Y direction is larger than the dimension in the X direction.

[0102] The second guide groove 198A and the second support protrusion 1100A are provided at both ends of the side on the -X side, and the second guide plane 198B and the second support protrusion 1100B are provided at both ends of the side on the +X side. As shown in Fig. 23(A), Fig. 23(B), Fig. 24(A), and Fig. 24(B), in a cross section parallel to the ZX plane, the second support protrusion 1100A and the second guide groove 198A come into contact at two points, and the second support protrusion 1100B and the second guide plane 198B come into contact and slide at one point. Overall, the second support protrusion 1100A and the second guide groove 198A come into line contact and slide at two points, and the second support protrusion 1100B and the second guide plane 198B come into line contact and slide at one point. Since second guide groove 198A extending in the Y direction and second support protrusion 1100A are fitted together to restrict movement in the X direction, sensor holder 124 is movable only in the Y direction relative to slider 196. First guide mechanism 188 and second guide mechanism 190 allow sensor holder 124 to move in the X and Y directions relative to base 120.

[0103] Also, the Z-direction top of the second support protrusion 1100B comes into contact with the second guide plane 198B that spreads in the XY directions. This allows the Z-direction height of the sensor holder 124 relative to the slider 196 to be determined. Also, the X-direction width of the second guide plane 198B is wider than the X-direction width of the second support protrusion 1100B. Therefore, assembly is possible even if the dimension between the second support protrusion 1100A and the second support protrusion 1100B differs within the tolerance range from the dimension between the second guide groove 198A and the second guide plane 198B.

[0104] In addition, the first guide portion 192 and the second guide portion 198 are made of metal, and the first support portion 194 and the second support portion 1100 are made of resin. This keeps the coefficient of friction small due to contact between the metal and the resin. Therefore, the coefficient of friction in the perpendicular direction guide mechanism 122 is unlikely to become large.

[0105] The slider 196 including the first guide portion 192 and the second guide portion 198 is formed as a plate-like member of a predetermined thickness from a non-magnetic metal, for example, an aluminum alloy. For example, it may be formed by an aluminum die-casting method in which molten aluminum alloy is poured into a mold. The slider 196 may also be formed from a stainless steel alloy. Furthermore, the surfaces of the first guide portion 192 and the second guide portion 198 may be subjected to a mirror finish by polishing or a chemical polishing process to reduce the surface roughness and reduce the coefficient of friction.

[0106] On the other hand, the base 120 and the sensor holder 124 on which the first support portion 194 and the second support portion 1100 are provided are made of resin, for example, formed of a fluorine-containing liquid crystal polymer resin. It is sufficient that the first support portion 194 and the second support portion 1100 are made of resin, and the base 120 and the sensor holder 124 may be formed by insert molding and reinforced with metal. Also, a fluorine-based resin lubricant may be interposed between the first guide portion 192 and the first support portion 194, and between the second guide portion 198 and the second support portion 1100. Also, the slider 196 may be manufactured by powder metallurgy, and the porous metal body such as copper may be impregnated with a lubricant.

[0107] 21(B), the first guide portion 192 is formed so as to be recessed in the +Z direction from the plate surface on the -Z side of the slider 196, and the position of the first guide plane 192B is located at a position shallower than the groove depth of the first guide groove 192A. Also, as shown in FIG. 21(A), the second guide portion 198 is formed on a protruding portion that protrudes in a platform shape in the +Z direction from the plate surface on the +Z side of the slider 196, and the position of the second guide plane 198B is located at a position shallower than the groove depth of the second guide groove 198A. Also, the extending directions of the first guide groove 192A and the second guide groove 198A provided in the slider 196 are perpendicular to each other.

[0108] In the above configuration, when electricity is applied to the first coil 1118, an electromagnetic force in the Y direction is generated, and the sensor holder 124 is guided by the second guide mechanism 190 and moves in the Y direction relative to the slider 196. When electricity is stopped from being applied to the first coil 1118, the sensor holder 124 stops at that position due to the attractive force between the fourth magnet 178 and the fourth yoke 166, the friction of the second guide mechanism 190, etc.

[0109] When the second coil 1120 is energized, an electromagnetic force in the X direction is generated, and the sensor holder 124 moves in the X direction together with the slider 196 while being guided by the first guide mechanism 188. When the energization of the second coil 1120 is stopped, the sensor holder 124 and the slider 196 stop at that position due to the attractive force between the fourth magnet 178 and the fourth yoke 166, the friction with the first guide mechanism 188, and the like.

[0110] When the third coil 1122 is energized, an electromagnetic force in the Z direction is generated, and the lens carrier 116 moves in the Z direction while being guided by the optical axis direction guide mechanism 118. When the energization of the third coil 1122 is stopped, the lens carrier 116 stops at that position due to the attractive force between the third magnet 1112 and the fifth yoke 1124, friction of the optical axis direction guide mechanism 118, etc.

[0111] When optical element driving device 110 receives an impact in the Z direction, first guide portion 192 and first support portion 194, and second guide portion 198 and second support portion 1100, if they separate, only move a small distance and immediately return to their original positions. Since first guide mechanism 188 and second guide mechanism 190 are in line contact, first guide portion 192 and second guide portion 198, which are made of metal, are not damaged, and first support portion 194 and second support portion 1100, which are made of resin, are elastically deformed and return to their original positions, so there is almost no damage. Furthermore, guide shaft 152 and guide hole 154 maintain their respective contact states, so there is almost no damage.

[0112] Furthermore, when optical element driving device 110 receives an impact in the X or Y direction, first guide portion 192 and first support portion 194, and second guide portion 198 and second support portion 1100 maintain a substantially contacting state, so there is almost no damage. Furthermore, even if guide shaft 152 and guide hole 154 separate, they only separate a small distance and immediately return to their original positions. At that time, guide hole 154 is made of resin and elastically deforms, so there is almost no damage to guide shaft 152 or guide hole 154.

[0113] [Variations] In the third embodiment, the slider 196 is configured as a single metal member cast by aluminum die casting or the like, but the present invention is not limited to the third embodiment. The slider 196 may be slider 1134 formed by integrating two metal plates, one of which has a first guide portion formed thereon and the other of which has a second guide portion formed thereon, as in the modified example shown below. The optical element driving device of the modified example is the same as the optical element driving device 110 of the third embodiment except for the configuration of slider 1134. Therefore, the same configurations are described using the same reference symbols, and detailed descriptions thereof are omitted.

[0114] As shown in Fig. 26(A) and Fig. 26(B), the slider 1134 is formed by two metal plates, a rear metal plate 1136 arranged on the -Z side and a front metal plate 1138 arranged on the +Z side, overlapping in the Z direction. The rear metal plate 1136 and the front metal plate 1138 are substantially rectangular, with a substantially rectangular through hole 1140 formed in the center, and recesses 1142 formed on one side of the outer periphery on the +Y side and one side on the +X side corresponding to the recess 1102B. In addition, first guide portions 1144 are formed at the four corners of the rear metal plate 1136, and second guide portions 1146 are formed at the four corners of the front metal plate 1138.

[0115] The front metal plate 1138 and the rear metal plate 1136 are integrated by a fastening method such as welding, crimping, screwing, or adhesive, except for the first guide portion 1144 and the second guide portion 1146. The rear metal plate 1136 in the first guide portion 1144 and the front metal plate 1138 in the second guide portion 1146 overlap with a gap provided in the Z direction.

[0116] The first guide portion 1144 has a first guide groove 1144A and a first guide plane 1144B, which correspond to the first guide groove 192A and the first guide plane 192B, respectively. The second guide portion 1146 has a second guide groove 1146A and a second guide plane 1146B, which correspond to the second guide groove 198A and the second guide plane 198B, respectively. The first guide portion 1144 is formed by bending the rear metal plate 1136, and the second guide portion 1146 is formed by bending the front metal plate 1138. The second guide portion 1146, like the second guide portion 198, is formed as a protruding portion that protrudes in a platform shape in the +Z direction from the plate surface on the +Z side of the front metal plate 1138. The first guide groove 1144A is connected to the main body of the rear metal plate 1136 only on the -Y side, and the first guide flat surface 1144B is connected to the main body of the rear metal plate 1136 only on the +Y side. The second guide groove 1146A is connected to the main body of the front metal plate 1138 only on the -X side, and the second guide flat surface 1146B is connected to the main body of the rear metal plate 1136 only on the +X side.

[0117] The rear metal plate 1136 of the first guide part 1144 and the front metal plate 1138 of the second guide part 1146 overlap with a gap provided in the Z direction. As a result, when an impact is applied, at least one of the first guide part 1144 and the second guide part 1146 bends to absorb the impact, and damage to the first support part 194 and the second support part 1100 made of resin can be further suppressed.

[0118] Specifically, the groove depth of the first guide groove 1144A, the groove depth of the second guide groove 1146A, and the height of the protruding portion where the second guide portion 1146 is formed are determined so that the rear metal plate 1136 of the first guide portion 1144 and the front metal plate 1138 of the second guide portion 1146 do not come into contact with each other. These dimensions are determined in consideration of the dimensional tolerance, as well as the weight, deflection due to the attractive force of the fourth magnet 178 and the fourth yoke 166, deflection during normal use, deflection due to impact, and the like. As for the other portions, the position of the first guide plane 1144B is shallower than the groove depth of the first guide groove 1144A, and the position of the second guide plane 1146B is shallower than the groove depth of the second guide groove 1146A, so that a sufficient interval can be necessarily ensured.

[0119] In the modified perpendicular direction guide mechanism 122, when a force in the +Z direction is applied, the base 120 pushes the slider 1134 in the +Z direction, the slider 1134 pushes the sensor holder 124 in the +Z direction, and the sensor holder 124 pushes back the slider 1134 in the -Z direction. That is, in the first guide mechanism 188, the first support portion 194 elastically deforms the rear metal plate 1136 in the +Z direction where the first guide portion 1144 is formed. The front metal plate 1138 in the portion where the second guide portion 1146 is formed pushes the second support portion 1100 while elastically deforming in the -Z direction.

[0120] Since there is a gap between the rear metal plate 1136 where the first guide portion 1144 is formed and the front metal plate 1138 where the second guide portion 1146 is formed, which allows the plates to bend and deform, the plates do not come into contact with each other even if they are bent and deformed. Therefore, the first guide portion 1144 and the second guide portion 1146 can be sufficiently elastically deformed and can absorb shock. When a force is applied in the -Z direction, the plates are also deformed so that the gap between the rear metal plate 1136 where the first guide portion 1144 is formed and the front metal plate 1138 where the second guide portion 1146 is formed becomes narrower.

[0121] In the third embodiment, the optical member driving device 110 used in a camera device mounted on an electronic device such as a mobile phone or a smartphone has been described, but the present invention can also be applied to other devices.

[0122] [Fourth embodiment] 27 to 38 show a fourth embodiment of the image sensor driving device 210 of the present invention. The image sensor driving device 210 for driving the image sensor 212 is used in a camera device mounted on an electronic device such as a smartphone together with a lens (not shown) arranged in front of it and a lens driving device (not shown) for driving the lens in the direction of its optical axis. In the case of a periscope type, a prism or reflecting mirror, which is an optical path bending member, is arranged in front of the lens and the lens driving device. The image sensor 212 receives light from a subject that has passed through the lens, converts it into an electrical signal, and outputs it.

[0123] In the following description, the normal direction of the rectangular light receiving surface of the image sensor 212 is referred to as the Z direction, the direction parallel to the long side of the rectangle perpendicular to the Z direction is referred to as the X direction, and the direction parallel to the short side of the rectangle perpendicular to both the Z and X directions is referred to as the Y direction. The side from which light is incident on the light receiving surface of the image sensor 212 is referred to as the +Z side or front side, and the opposite side is referred to as the -Z side or rear side.

[0124] Image sensor driving device 210 includes a sensor holder 214 that fixes, from the rear side, image sensor 212 having a light receiving surface on its front side, a slider 242 that is arranged on the rear side of sensor holder 214, and base 216 that is a non-movable body that is arranged on the rear side of slider 242. Sensor holder 214, slider 242, and base 216 have a rectangular shape having long and short sides corresponding to the long and short sides of image sensor 212, and guide mechanisms 218 are formed at the four corners to guide and support sensor holder 214 movably relative to base 216 in a direction parallel to the light receiving surface.

[0125] 29 and 30, sensor holder 214 is configured as a rectangular flat plate parallel to the XY plane with its long sides in the X direction and its short sides in the Y direction. The +Z side surface of sensor holder 214 is flat, and stoppers 220 protrude in the form of columns in the +Z direction from the four corners. On the -Z side surface of sensor holder 214, drive member attachment portion 222 protrudes in the form of a platform in the -Z direction from the plate surface.

[0126] The slider 242 is made of a flat metal plate parallel to the XY plane and has a rectangular shape with its longer side in the X direction and its shorter side in the Y direction. A rounded rectangular through hole 248 is provided in the center.

[0127] The base 216 is in the shape of a box that is open on the +Z side and includes a bottom 224 parallel to the XY plane and a sidewall 226 erected in the +Z direction from the entire periphery of the bottom 224, and houses the sensor holder 214 inside. The bottom 224 has a long side in the X direction and a short side in the Y direction, which are larger than the long sides and short sides of the sensor holder 214. Extension parts 228 that extend further in the +Z direction are provided at the four corners of the sidewall 226, and a gap part 230 is formed between the two extension parts 228 on the short sides. A case 232, which will be described later, is fitted to the outside of the extension parts 228 to form a housing for the image sensor driving device 210.

[0128] The guide mechanism 218 is formed at the four corners of the sensor holder 214, the slider 242, and the base 216, and has a first guide mechanism 234 provided on the -Z side and a second guide mechanism 236 provided on the +Z side. The first guide mechanism 234 includes a first guide portion 238 and a first support portion 240. The first guide portion 238 is formed on the rear side surface of the slider 242, and includes a first guide groove 238A having a V-groove shape recessed in the +Z direction and extending in the X direction, and a first guide plane 238B parallel to the XY plane. The first support portion 240 is formed on the front side surface of the bottom portion 224 of the base 216 protruding in the +Z direction, and includes a first support protrusion 240A and a first support protrusion 240B, where the first support protrusion 240A corresponds to the first guide groove 238A, and the first support protrusion 240B corresponds to the first guide plane 238B. The first support protrusions 240A and 240B have the same shape, the dimension in the X direction is larger than the dimension in the Y direction, at least the tip portion has a semi-cylindrical shape as a whole, and both ends in the X direction are 1 / 4 spherical so as to smoothly connect with the semi-cylindrical portion.

[0129] The first guide groove 238A and the first support protrusion 240A are provided at both ends of the side on the +Y side, and the first guide plane 238B and the first support protrusion 240B are provided at both ends of the side on the -Y side. As shown in Figures 36(A), 36(B), 37(A), and 37(B), in a cross section parallel to the YZ plane, the first support protrusion 240A and the first guide groove 238A contact and slide at two points, and the first support protrusion 240B and the first guide plane 238B contact and slide at one point. Overall, the first support protrusion 240A and the first guide groove 238A slide in line contact at two points, and the first support protrusion 240B and the first guide plane 238B slide in line contact at one point. Since the first guide groove 238A extending in the X direction and the first support protrusion 240A are fitted together so as to restrict movement in the Y direction, the slider 242 is movable relative to the base 216 only in the X direction.

[0130] Also, the Z-direction top of the first support protrusion 240B comes into contact with the first guide plane 238B that spreads in the XY directions. This allows the Z-direction height of the slider 242 relative to the base 216 to be determined. Also, the Y-direction width of the first guide plane 238B is wider than the Y-direction width of the first support protrusion 240B. Therefore, assembly is possible even if the dimension between the first support protrusion 240A and the first support protrusion 240B differs within the tolerance range from the dimension between the first guide groove 238A and the first guide plane 238B.

[0131] The second guide mechanism 236 includes a second guide portion 244 and a second support portion 246. The second guide portion 244 is formed on a platform-shaped protruding portion protruding in the +Z direction on the front side surface of the slider 242, and includes a V-groove-shaped second guide groove 244A recessed in the -Z direction and extending in the Y direction, and a second guide plane 244B parallel to the XY plane. The second support portion 246 is formed on the rear side surface of the sensor holder 214 protruding in the -Z direction, and includes a second support protrusion 246A corresponding to the second guide groove 244A and a second support protrusion 246B corresponding to the second guide plane 244B. The shapes of the second support protrusion 246A and the second support protrusion 246B are the same as those of the first support protrusion 240A and the first support protrusion 240B, except that the dimension in the Y direction is larger than the dimension in the X direction.

[0132] The second guide groove 244A and the second support protrusion 246A are provided at both ends of the side on the +X side, and the second guide plane 244B and the second support protrusion 246B are provided at both ends of the side on the -X side. As shown in Figures 33(A), 33(A), 34(A), and 34(B), in a cross section parallel to the ZX plane, the second support protrusion 246A and the second guide groove 244A come into contact at two points, and the second support protrusion 246B and the second guide plane 244B come into contact and slide at one point. Overall, the second support protrusion 246A and the second guide groove 244A come into line contact and slide at two points, and the second support protrusion 246B and the second guide plane 244B come into line contact and slide at one point. Since the second guide groove 244A extending in the Y direction and the second support protrusion 246A are fitted together to restrict movement in the X direction, the sensor holder 214 is movable only in the Y direction relative to the slider 242. The first guide mechanism 234 and the second guide mechanism 236 allow the sensor holder 214 to move in the X and Y directions relative to the base 216.

[0133] Also, the Z-direction top of the second support protrusion 246B comes into contact with the second guide plane 244B that spreads in the XY directions. This allows the Z-direction height of the sensor holder 214 relative to the slider 242 to be determined. Also, the X-direction width of the second guide plane 244B is wider than the X-direction width of the second support protrusion 246B. Therefore, assembly is possible even if the dimension between the second support protrusion 246A and the second support protrusion 246B differs within the tolerance range from the dimension between the second guide groove 244A and the second guide plane 244B.

[0134] The first support protrusion 240A and the second support protrusion 246A are preferably shaped so that their tops do not come into contact with the bottom surfaces of the first guide groove 238A and the second guide groove 244A, and although they are semi-cylindrical, they may be other shapes such as semi-elliptical. The cross-sectional shapes of the first guide groove 238A and the second guide groove 244A are V-shaped, but they may be U-shaped.

[0135] In addition, the first guide portion 238 and the second guide portion 244 are made of metal, and the first support portion 240 and the second support portion 246 are made of resin. This keeps the coefficient of friction small due to contact between the metal and the resin. Therefore, the coefficient of friction in the guide mechanism 218 is unlikely to become large.

[0136] The slider 242 including the first guide portion 238 and the second guide portion 244 is formed as a plate-like member of a predetermined thickness from a non-magnetic metal, for example, an aluminum alloy. For example, it may be formed by an aluminum die-casting method in which molten aluminum alloy is poured into a mold as in the fourth embodiment. The slider 242 may also be formed from a stainless steel alloy. Furthermore, the surfaces of the first guide portion 238 and the second guide portion 244 may be subjected to a mirror finish by polishing or a chemical polishing process to reduce the surface roughness and reduce the coefficient of friction.

[0137] On the other hand, the base 216 on which the first support portion 240 is provided and the sensor holder 214 on which the second support portion 246 is provided are made of resin, for example, fluorine-containing liquid crystal polymer resin. They may be formed by insert molding and reinforced with metal. Also, a fluorine-based resin lubricant may be interposed between the first guide portion 238 and the first support portion 240, and between the second guide portion 244 and the second support portion 246. Also, the slider 242 may be manufactured by powder metallurgy, and the porous metal body such as copper may be impregnated with a lubricant.

[0138] 31, the second guide portion 244 is formed in a protruding portion that protrudes in a platform shape in the +Z direction from the plate surface on the +Z side of the slider 242, and the first guide portion 238 is formed so as to be recessed in the +Z direction from the plate surface on the -Z side of the slider 242. The position of the first guide plane 238B is located at a position shallower than the groove depth of the first guide groove 238A, and the position of the second guide plane 244B is located at a position shallower than the groove depth of the second guide groove 244A.

[0139] 30, the drive unit mounting portion 222 of the sensor holder 214 has a first mounting recess 250 recessed in the +Z direction formed in the center, and second mounting recesses 252 recessed in the +Z direction formed on both the +X and -X sides thereof. A first yoke 254 and a first magnet 256 are fixed to the first mounting recess 250, and a second yoke 258 and a second magnet 260 are fixed to the second mounting recess 252.

[0140] The first magnet 256 is divided into two in the Y direction, with an S pole formed on the rear side of one magnet piece and an N pole formed on the rear side of the other magnet piece. The second magnet 260 is divided into two in the X direction, with an S pole formed on the rear side of one magnet piece and an N pole formed on the rear side of the other magnet piece.

[0141] A driving flexible printed circuit board (hereinafter, driving FPC) 262 is disposed on the front side surface of the bottom 224 of the base 216. The driving FPC 262 has a rectangular shape of a size that allows it to be placed inside the first support portion 240 of the bottom 224, and has a substantially L-shaped input / output portion 264 that extends slightly outward from the end of the long side on the -Y side, is bent forward, and is turned toward a corner of the base 216. The input / output portion 264 further passes outside the extension portion 228 and exits to the outside through a slit 290 of the case 232, which will be described later.

[0142] A first coil 266 is fixed to the center of the front side of the driving FPC 262, and a second coil 268 is fixed to both the +X side and the -X side thereof. The first coil 266 has a straight portion in the X direction and is disposed facing the first magnet 256, and the second coil 268 has a straight portion in the Y direction and is disposed facing the second magnet 260. The first coil 266 and the second coil 268 are electrically connected to the outside via the driving FPC 262.

[0143] The first coil 266 and the second coil 268 are housed in the through hole 248 of the slider 242. In order for the slider 242 to move in the Y direction, the dimension of the slider 242 in the Y direction is required accordingly, and the dimension of the image sensor driving device 210 in the Y direction becomes large, resulting in a thicker electronic device. By moving the slider 242 in the X direction, it is possible to prevent the electronic device from becoming thicker.

[0144] A Y-direction position detection sensor 270 is disposed in the center of the first coil 266 , and an X-direction position detection sensor 272 is disposed in the center of one of the two second coils 268 .

[0145] 30, a third yoke 276 is fixed to a third mounting recess 274 provided on the rear side surface of the bottom 224 of the base 216, facing the first magnet 256 and the second magnet 260. Since an attractive force is generated between the first magnet 256 and the second magnet 260 and the third yoke 276, the sensor holder 214 is pulled in the -Z direction toward the base 216 via the slider 242.

[0146] The sensor flexible printed circuit board (hereinafter, sensor FPC) 278 includes a sensor fixing portion 280 fixed between the image sensor 212 and the sensor holder 214, two terminal portions 284 connected to the outside, and two connection portions 282 that respectively connect the sensor fixing portion 280 and the terminal portions 284. The sensor fixing portion 280 is a rectangular flat plate that is slightly smaller than the outer shape of the sensor holder 214, and the image sensor 212 is fixed to its front side surface, and the rear side surface is fixed to the sensor holder 214.

[0147] The two connection parts 282 extend in line symmetry. The two connection parts 282 each extend slightly outward from the center of the long side on the +Y side of the sensor fixing part 280, bend toward the +Z side, extend along the long side toward the end of the long side, and bend and change direction after passing the end of the long side to extend along the short side. The two connection parts 282 each further bend in a zigzag pattern toward the outside in the X direction along the short side, and extend to the outside of the base 216 through the gap 230 of the base 216. The connection part 282 extends along the outer side surface of the extension part 228 and is fixed to this outer surface, and extends to the outside through a slit 290 of the case 232 described later to form a terminal part 284. The image sensor 212 is electrically connected to the outside via the sensor FPC 278.

[0148] The image sensor driving device 210 further includes a box-shaped case 232 that is combined with the base 216 to form a storage space. The case 232 includes a rectangular front plate 286 and four side plates 288 extending in the -Z direction from the four sides of the front plate 286 and is fitted to the outside of the extension 228 of the base 216. Slits 290 are formed between the side plates 288, and the terminal portion 284 of the sensor FPC 278 and the input / output portion 264 of the driving FPC 262 are drawn out to the outside through the slits 290. The terminal portion 284 and the input / output portion 264 outside the device are substantially flush with the side plate 288 and the side wall 226 on the -Y side, and the normal direction is arranged parallel to the short side. Since the side plate 288 and the side wall 226 on the -Y side of the image sensor driving device 210 are placed on the camera device body, such an arrangement makes it easy to make electrical connections.

[0149] A through hole 292 is provided in the center of the front plate 286, and allows the incident light to pass through to the image sensor 212. The distance in the Z direction between the front end of the stopper 220 provided on the sensor holder 214 and the rear side surface of the front plate 286 is equal to or less than the distance between the top of the support protrusion and the surface of the guide groove. That is, it is equal to or less than the distance between the top of the first support protrusion 240A and the rear side surface of the slider 242, and is equal to or less than the distance between the top of the second support protrusion 246A and the aforementioned platform-like protrusion. This prevents the first support protrusion 240A and the second support protrusion 246A from coming off the first guide groove 238A and the second guide groove 244A, respectively.

[0150] In the above configuration, when current is applied to the second coil 268, the slider 242 together with the sensor holder 214 is guided by the first guide mechanism 234 by the Lorentz force and moves in the X direction relative to the base 216. When current is applied to the first coil 266, the sensor holder 214 is guided by the second guide mechanism 236 by the Lorentz force and moves in the Y direction relative to the slider 242. As a result, the sensor holder 214 mounting the image sensor 212 is driven in the X and Y directions relative to the base 216. When current is stopped to the first coil 266 and the second coil 268, the sensor holder 214 stops at that position.

[0151] When the image sensor driving device 210 receives an impact in the Z direction, the first guide portion 238 and the first support portion 240, and the second guide portion 244 and the second support portion 246, if they separate, only move a small distance and immediately return to their original positions. The contact state between the first guide portion 238 and the first support portion 240, and the second guide portion 244 and the second support portion 246 is line contact. Therefore, the first guide portion 238 and the second guide portion 244, which are made of metal, are not damaged, and the first support portion 240 and the second support portion 246, which are made of resin, are elastically deformed and return to their original positions, so there is almost no damage.

[0152] Furthermore, when the image sensor driving device 210 receives an impact in the X or Y direction, the first support portion 240 and the first guide portion 238, and the second support portion 246 and the second guide portion 244 maintain a substantially contacting state, so there is almost no damage. Even if an impact is received in either direction, there is almost no damage, and smooth movement of the sensor holder 214 relative to the base 216 can be ensured.

[0153] [Variations] In the fourth embodiment, the slider 242 is configured as a single metal member cast by aluminum die casting or the like, but the present invention is not limited to the fourth embodiment. The slider 242 may be a slider 296 formed by integrating two metal plates, as in the modified example described below. In that case, a first guide portion is formed on one of the two metal plates, and a second guide portion is formed on the other of the two metal plates. Hereinafter, a modified lens driving device will be described with reference to Figs. 38 to 41. The modified lens driving device is the same as the image sensor driving device 210 of the fourth embodiment, except for the configuration of the slider 296. Therefore, the same configurations will be described using the same reference symbols, and detailed descriptions thereof will be omitted.

[0154] 38(A) and 38(B), the slider 296 is formed by two metal plates, a rear metal plate 298 arranged on the -Z side and a front metal plate 2100 arranged on the +Z side, overlapping in the Z direction. The rear metal plate 298 and the front metal plate 2100 are substantially rectangular, and a through hole 2102 for receiving the first coil 266 and the second coil 268 is formed in the center. In addition, first guide portions 2104 are formed at the four corners of the rear metal plate 298, and second guide portions 2106 are formed at the four corners of the front metal plate 2100.

[0155] The front metal plate 2100 and the rear metal plate 298 are integrated by a fastening method such as welding, crimping, screwing, or adhesive, except for the first guide portion 2104 and the second guide portion 2106. Furthermore, the rear metal plate 298 in the first guide portion 2104 and the front metal plate 2100 in the second guide portion 2106 overlap with a gap provided in the Z direction, as described below.

[0156] The first guide portion 2104 has a first guide groove 2104A and a first guide plane 2104B, which correspond to the first guide groove 238A and the first guide plane 238B, respectively. The second guide portion 2106 has a second guide groove 2106A and a second guide plane 2106B, which correspond to the second guide groove 244A and the second guide plane 244B, respectively. The first guide groove 2104A and the first guide plane 2104B are formed by bending the plate-shaped rear metal plate 298, and the second guide groove 2106A and the second guide plane 2106B are formed by bending the plate-shaped front metal plate 2100. The first guide groove 2104A is connected to the main body of the rear metal plate 298 only on the -Y side, and the first guide plane 2104B is connected to the main body of the rear metal plate 298 only on the +Y side. Moreover, the second guide groove 2106A is connected to the main body of the front metal plate 2100 only on the -X side, and the second guide flat surface 2106B is connected to the main body of the front metal plate 2100 only on the +X side.

[0157] The rear metal plate 298 of the first guide portion 2104 and the front metal plate 2100 of the second guide portion 2106 overlap with a gap provided in the Z direction. As a result, when an impact is applied, at least one of the first guide portion 2104 and the second guide portion 2106 bends to absorb the impact, thereby suppressing damage to the first support portion 240 and the second support portion 246 made of resin.

[0158] Specifically, the groove depth of the first guide groove 2104A, the groove depth of the second guide groove 2106A, and the height of the protruding portion where the second guide portion 2106 similar to the second guide portion 244 is formed are determined so that the rear metal plate 298 of the first guide portion 2104 and the front metal plate 2100 of the second guide portion 2106 do not come into contact with each other. These dimensions are determined in consideration of the dimensional tolerance, as well as the weight, deflection due to the attractive force of the first magnet 256, the second magnet 260, and the third yoke 276, deflection during normal use, deflection due to impact, etc. As for the other portions, the position of the first guide plane 2104B is shallower than the groove depth of the first guide groove 2104A, and the position of the second guide plane 2106B is shallower than the groove depth of the second guide groove 2106A, so that a sufficient interval can be necessarily secured.

[0159] In the guide mechanism 218 of the modified example, when an impact is applied in the +Z direction, the base 216 pushes the slider 296 in the +Z direction, the slider 296 pushes the sensor holder 214 in the +Z direction, and the sensor holder 214 pushes back the slider 296 in the -Z direction. That is, in the first guide mechanism 234, the first support 240 pushes the first guide 2104 in the +Z direction, and the first guide 2104 elastically deforms in the +Z direction. Also, in the second guide mechanism 236, the second support 246 pushes the second guide 2106 in the -Z direction, and the second guide 2106 elastically deforms in the -Z direction. Since a gap is provided between the rear metal plate 298 in the first guide 2104 and the front metal plate 2100 in the second guide 2106, they do not come into contact with each other even if they are elastically deformed. The same applies when an impact is applied in the -Z direction. Therefore, the first guide portion 2104 and the second guide portion 2106 can be sufficiently elastically deformed and can absorb the impact. When an impact is applied in the X or Y direction of the guide mechanism 218 of the modified example, the operation is substantially the same as that of the guide mechanism 218 of the fourth embodiment, and therefore a detailed description will be omitted.

[0160] In the above fourth embodiment, the image sensor driving device 210 used in a camera device mounted on an electronic device such as a mobile phone or a smartphone has been described, but the present invention can also be applied to other devices.

[0161] (Additional Note) (((1))) A guide mechanism for guiding the movement of the optical member is provided. The guide mechanism has a guide portion including a groove and a sliding plane formed in a first metal member, and a support portion formed as a plurality of protrusions in a second resin member, and some of the plurality of protrusions made of resin fit into the groove made of metal, and the remaining protrusions of the plurality of protrusions contact the sliding plane made of metal, so that the support portion and the guide portion slide. Optical element drive device. (((2))) The device has one of the first members and two of the second members, the first member has the guide portion on both sides of the optical member in the optical axis direction, and an extension direction of the groove provided on one side of the guide portion in the optical axis direction and an extension direction of the groove provided on the other side of the guide portion in the optical axis direction are perpendicular to each other; The two second members sandwich the first member from both sides in the optical axis direction, and one of the second members has a support for supporting the optical member. The optical element driving device according to (((1))). (((3))) The first plate-like member has a rectangular outer shape, One of the guide portions provided on both sides in the optical axis direction is formed on the surface of a protruding portion that protrudes in a platform shape from the plate surface in the optical axis direction at each of the four corners of the rectangular first member. The optical element driving device according to (((2))). (((4))) The other of the guide portions is formed on the rear surface of the protruding portion. The optical element driving device according to (((3))). (((5))) The first member is integrally formed. The optical element driving device according to (((1))). (((6))) The first member is formed by fixing two metal plates, one of the two metal plates is formed with one of the guide parts provided on both sides in the optical axis direction, and the other of the two metal plates is formed with the other of the guide parts provided on both sides in the optical axis direction. The optical element driving device according to (((2))). (((7))) The two metal plates each have a rectangular shape. One of the guide portions provided on both sides in the optical axis direction is formed on the surface of a protruding portion that protrudes in a platform shape in the optical axis direction from a plate-shaped surface of one of the metal plates at four corners. The optical element driving device according to (((6))). (((8))) A camera device comprising the optical element driving device according to (((1))) and a lens as the optical element. (((9))) A camera device comprising the optical element driving device according to (((1))) and an image sensor as the optical element. (((10))) An electronic device comprising the camera device according to any one of (((8))) or (((9))). (((11))) A guide mechanism for guiding the movement of the optical member is provided. the guide mechanism has a guide portion including a groove and a sliding plane formed on a surface of a first member made of metal, and a support portion formed as a plurality of protrusions on a second member made of resin, The guide portion is connected to the main body of the first member only on one side, Some of the plurality of protrusions fit into the grooves, and the remaining protrusions contact the sliding plane, causing the support portion and the guide portion to slide, thereby guiding the movement of the optical member. Optical element drive device. (((12))) The first member has the guide portions formed at the same positions on the front and back surfaces, A gap is provided between the two guide parts. The optical element driving device according to (((11))). (((13))) the first member is formed of two metal plates whose plate surfaces overlap, and at least one of the metal plates forms a protruding portion that protrudes in a platform shape from the plate surface at a position where the guide portion is provided, and the two metal plates overlap with each other with the gap provided between them; The optical element driving device according to (((12))). (((14))) The two metal plates each have a substantially rectangular shape, The protrusions are formed at the four corners of the substantially rectangular metal plate. The optical element driving device according to (((13))). (((15))) The groove is provided at both ends of one of the two opposing sides of each of the two substantially rectangular metal plates, and the sliding plane is provided at both ends of the other side. The extension direction of the groove formed in one metal plate and the extension direction of the groove formed in the other metal plate are perpendicular to each other. The optical element driving device according to (((14))). (((16))) The protrusion is formed by bending the metal plate. The optical element driving device according to (((3))). (((17))) The first member is integrally molded, The gap is a slit provided between the two guide parts and parallel to the sliding plane. The optical element driving device according to (((12))). (((18))) The first member is a metal plate, the guide portion extends from the main body of the first member in the in-plane direction, and the sliding plane is at the same height as the main body of the first member. The optical element driving device according to (((11))). (((19))) The sliding planes, which are at the same height as the main body of the first member, are provided on both sides of the first member. The optical element driving device according to (((18))). (((20))) The second member has two second members sandwiching the first member from both sides in the optical axis direction of the optical member, and a support for supporting the optical member is provided on one of the second members. The optical element driving device according to any one of claims (((12))) or (((19))). (((twenty one))) A camera device comprising the optical element driving device according to (((1))) and a lens as the optical element. (((twenty two))) A camera device comprising the optical element driving device according to (((11))) and an image sensor as the optical element. (((twenty three))) An electronic device comprising the camera device according to any one of (((21))) or (((22))). (((twenty four))) A plate-shaped base and A box-shaped sub-base fixed to a front panel of a box-shaped case fixed to the base; a lens carrier supported inside the sub-base so as to be movable in the direction of an optical axis of a lens; a sensor holder that holds an image sensor and is supported by an orthogonal direction guide mechanism so as to be movable relative to the base in two directions that are orthogonal to the optical axis direction and are orthogonal to each other; a slider disposed between the sensor holder and the base, The orthogonal direction guide mechanism has a metallic guide groove and guide plane formed on the front and rear side surfaces of the slider, and a plurality of resin support protrusions formed on the rear side surface of the sensor holder and the front side surface of the base, respectively, and each of the support protrusions contacts either the corresponding guide groove or the guide plane. (((twenty five))) the sensor holder holds an image sensor fixed to a first flexible printed circuit board; The first flexible printed circuit board has a flat portion perpendicular to the optical axis direction on which the image sensor is mounted, and a strip-shaped portion extending in the optical axis direction from one side of the flat portion and extending around the sensor holder toward the opposite side of the flat portion, and fixed to the base. (((26))) the sensor holder has a bottom plate portion having a through hole in the center, and a side plate portion rising forward from a middle between an outer edge and an inner edge of the bottom plate portion, The optical element driving device according to (((25))), wherein the strip portion is located between the outer edge of the bottom plate portion and the side plate portion. (((27))) An optical element driving device as described in (((26))), wherein the outer edge of the bottom plate portion has a recess facing inward, the flat plate portion is attached to the rear side surface of the sensor holder, and the band-shaped portion extending from one side of the flat plate portion in the optical axis direction passes through the recess. (((28))) An optical element driving device as described in (((26))), wherein a convex portion protruding forward is provided on three sides of the outer edge of the bottom plate portion, and the rear end of the strip portion is located rearward of the front end of the convex portion. (((29))) An optical element driving device as described in (((28))), wherein an FPC fixing wall is erected on an edge of the base opposite to an edge of the outer edge that is not one of the three sides, and the strip-shaped portion is fixed to an outer surface of the FPC fixing wall. (((30))) a second flexible printed circuit board is disposed so as to surround the outside of three sides of the sub-base, and the sub-base has a side wall surrounding the outside of the three sides of the lens carrier; An optical element driving device as described in (((24))), in which a first coil and a second coil are arranged on two adjacent outer surfaces of the second flexible printed circuit board at a position outside the side wall, and a third coil is arranged on an inner surface of the second flexible printed circuit board at a position where there is no side wall. (((31))) The optical element driving device according to (((30))), wherein the second flexible printed circuit board is electrically connected to the outside through a through hole provided in the front plate of the case. (((32))) An optical element driving device as described in (((30))), wherein a third magnet is arranged on the lens carrier so as to face the third coil, a first magnet is arranged on the sensor holder so as to face the first coil, and a second magnet is arranged so as to face the second coil. (((33))) a fourth magnet fixed to the sensor holder; and a fourth yoke fixed to the base so as to face the fourth magnet, The optical element driving device according to (((24))), wherein the slider has recesses formed on two adjacent sides of its outer periphery, and the fourth yoke is fixed within the recesses. (((34))) A camera device comprising the optical element driving device described in (((24))) and a lens fixed to the lens carrier. (((35))) An electronic device equipped with the camera device described in (((34))). (((36))) a sensor holder for fixing an image sensor having a light receiving surface on a front side from a rear side; a slider disposed on a rear side of the sensor holder; a base that is a non-movable body and is disposed on the rear side of the slider; the sensor holder, the slider, and the base have a rectangular shape having corresponding long and short sides, and guide mechanisms are formed at the four corners of the rectangular shape for guiding and supporting the sensor holder so as to be movable relative to the base in a direction parallel to the light receiving surface; The guide mechanism has a metallic guide groove and guide plane formed on the front and rear side surfaces of the slider, and a plurality of resin support protrusions formed on the rear side surface of the sensor holder and the front side surface of the base, each of which contacts either the corresponding guide groove or guide plane. (((37))) The image sensor drive device according to ((36))), wherein each of the support protrusions contacts either the corresponding one of the guide grooves or the guide plane in a line contact manner. (((38))) Further comprising a flexible printed circuit board for a sensor, the flexible printed circuit board for sensor has a sensor fixing portion fixed between the image sensor and the sensor holder, two terminal portions connected to an external device, and two connection portions connecting the sensor fixing portion and the terminal portions, respectively; The two connection parts extend symmetrically, extending slightly outward from the centre of the long side of the rectangular sensor fixing part, bending forward, changing direction and extending along the long side towards the end of the long side, bending after the end of the long side to extend along the short side, and then bending in a zigzag manner outward to reach the terminal part. (((36))) An image sensor driving device as described in the above. (((39))) The image sensor driving device according to (((38))), wherein the terminal portion is flush with the long side of the rectangular base and the normal direction thereof is parallel to the short side. (((40))) The base further includes a box-shaped case having a rectangular shape corresponding to the rectangular shape of the base, the base has a bottom parallel to the light receiving surface, a side wall extending forward from an entire outer periphery of the bottom, and an extension extending further forward from a corner of the side wall, The case has slits at the corners, The connection portion extends to the outside of the base through a gap between two extension portions provided on the short sides of the base, extends along the outside of one of the extension portions, exits through the slit, and reaches the terminal portion (((39))) of the image sensor driving device. (((41))) The drive device further includes a drive flexible printed circuit board held by the base and a coil held by the drive flexible printed circuit board, The image sensor driving device described in (((40))) has an input / output section that extends slightly outward from the long side end of the rectangle, bends forward, turns toward the corner of the base, passes outside the extension, and exits from the slit to the outside together with one of the connection sections. (((42))) a drive magnet fixed to a rear side surface of the sensor holder and a coil fixed to a front side surface of the base, The image sensor driving device according to (((36))), wherein the coil is arranged in the long side direction with a first coil having a straight portion in the long side direction and a second coil having a straight portion in the short side direction. (((43))) The image sensor driving device according to (((42))), wherein the slider has a through hole in its center, and the coil is positioned within the through hole. (((44))) The image sensor driving device according to (((43))), wherein the guide groove formed on the rear side surface of the slider extends in the long side direction. (((45))) The device further includes a case that is combined with the base to form a storage space, the sensor holder has a stopper protruding forward in a column shape from a front side surface thereof, The image sensor drive device according to (((36))), wherein the distance between the front end of the stopper and the rear side surface of the front plate of the case is equal to or less than the distance between the top of the support protrusion and the surface of the guide groove. (((46))) A camera device comprising the image sensor drive device according to (((36))), a lens disposed in front of the image sensor drive device, and a lens drive device that drives the lens. (((47))) An electronic device equipped with the camera device described in (((46))).

[0162] According to the inventions of the optical element drive device, camera device, and electronic device pertaining to (((1))) to (((10))), the first member on which the groove and sliding plane constituting the guide mechanism are formed is made of metal, and the second member on which the protrusions that fit into the grooves and the protrusions that contact the sliding plane are formed is made of resin. This makes it difficult for the friction coefficient in the guide mechanism to become large, and allows for an even thinner configuration overall. According to the inventions of the optical element drive device, camera device, and electronic device pertaining to (((11))) to (((23))), the guide mechanism has a guide section including a groove and a sliding plane formed on the surface of a first metal member, and a support section formed as a protrusion on a second resin member, and the guide section is connected to the main body of the first member only on one side. Therefore, the coefficient of friction in the guide mechanism is unlikely to become large, and the guide section elastically deforms even when an impact is applied, so that the guide mechanism is unlikely to be damaged. According to the inventions of the optical element driving device, camera device, and electronic device pertaining to (((24))) to (((35))), there are metal guide grooves and guide planes formed on the front and rear sides of the slider, and a plurality of resin support protrusions formed on the rear side of the sensor holder and the front side of the base, respectively, and each support protrusion comes into contact with either the corresponding guide groove or guide plane. Therefore, even if an impact is applied, there is no damage to the metal guide groove and guide plane, and the resin support protrusions elastically deform and return to their original shape, so there is almost no damage. In addition, the contact between the metal and the resin keeps the coefficient of friction small. Therefore, it is less susceptible to damage when dropped and the smooth movement of the member holding the optical element, such as the image sensor, can be ensured. According to the inventions of the image sensor drive device, camera device, and electronic device pertaining to (((36))) to (((47))), the guide mechanism has a metallic guide groove and guide plane formed on the front and rear side surfaces of the slider, and a plurality of resinous support protrusions formed on the rear side surface of the sensor holder and the front side surface of the base, respectively. Each support protrusion contacts either the corresponding guide groove or guide plane. Therefore, even if an impact is applied, there is no damage to the metallic guide groove and guide plane, and the resinous support protrusions elastically deform and return to their original shape, so there is almost no damage. Therefore, even if an impact is applied, they are less likely to be damaged, and smooth movement can be ensured. [Explanation of symbols]

[0163] 10 Lens drive unit 12 Fixed body 14 Mobile 16 Lens support 18 First Frame 20 Lens mounting hole 22 First moving body plate 22A Slit 24 Second moving body plate 26 Cover 28, 30, 32 Through holes 34 Orthogonal Guidance Mechanism 36 First guide mechanism 38 Second guide mechanism 42 1st Information Department 42A 1st groove 42B First sliding plane 40, 40A, 40B 1st support part 46 2nd Information Department 46A 2nd groove 46B Second sliding plane 44, 44A, 44B 2nd support part 48 Mounting part 50 Mounting hole 52 Mounting part 54 First Magnet 56 First York 58 Second Magnet 60 Second York 62 Second Frame 64-base 66 Cover 68 Bottom part 70 Front part 72, 74 Through holes 76 Pillar section 78 Flexible Printed Circuit Board 80 Terminal section 82 First coil 84 Second coil 86 Magnetic Materials 88 Optical axis support mechanism 90 Main guide shaft 92 Sub-guide shaft 94 Guide hole 96 Guide Wall 98 First moving body plate 98A Slit 100 Rear metal plate 102 Front metal plate 104 1st Information Department 104A 1st groove 104B First sliding plane 106 2nd Information Department 106A 2nd groove 106B Second sliding plane 110 Optical member driving device 112 cases 114 Sub-base 116 Lens Carrier 118 Optical axis direction guide mechanism 120 Base 122 Orthogonal Guidance Mechanism 124 Sensor holder 126 First flexible printed circuit board (first FPC) 128 Image Sensor 130 Front Panel 132 Through hole 134 Side wall 136 Through hole 138 Bottom plate 140 Side wall 142 Opening 144 Through hole 146 Mounting projection 148 Mounting hole 150 fixing hole 152 Guide shaft 154 Guide hole 156 Bottom plate 158 Fixed protrusion 160 FPC fixed wall 162 Through hole 164 4th yoke fixing part 166 4th York 168 Bottom lid 170 Through hole 172 Bottom plate part 172A Recess 172B Convex 174 Side plate part 176 4th magnet fixing part 178 4th Magnet 180 Flat plate part 182 Terminal section 184 Belt 188 First guide mechanism 190 Second guide mechanism 192 1st Information Department 192A First guide groove 192B 1st guide plane 194 1st support part 194A, 194B First supporting protrusion 196 Slider 198 2nd Information Department 198A Second guide groove 198B Second Guidance Plane 1100 Second support part 1100A, 1100B Second support protrusion 1102A Through hole 1102B Recess 1104 First magnet 1106 Second Magnet 1108 First York 1110 2nd York 1112 3rd magnet 1114 3rd York 1116 Second flexible printed circuit board (Second FPC) 1118 First coil 1120 Second coil 1122 3rd coil 1124 5th York 1126 Input / output section 1128 Y-direction position detection element 1130 X-direction position detection element 1132 Z-direction position detection element 1134 Slider 1136 Rear metal plate 1138 Front metal plate 1140 Through hole 1142 Recess 1144 1st Information Department 1144A First guide groove 1144B First Guidance Plane 1146 2nd Information Department 1146A Second guide groove 1146B 2nd guide plane 210 Image sensor drive device 212 Image Sensor 214 Sensor holder 216 Base 218 Guiding mechanism 220 Stopper 222 Drive member mounting part 224 Bottom 226 Side wall 228 Extension 230 Gap 232 cases 234 First guide mechanism 236 Second guide mechanism 238 1st Information Department 238A First guide groove 238B First Guidance Plane 240 1st support part 240A, 240B First supporting protrusion 242 Slider 244 2nd Information Department 244A 2nd guide groove 244B Second Guidance Plane 246 Second support part 246A, 246B Second support protrusion 248 Through hole 250 First mounting recess 252 Second mounting recess 254 First York 256 First Magnet 258 Second York 260 Second Magnet 262 Drive flexible printed circuit board (drive FPC) 264 Input / output section 266 First coil 268 Second coil 270 Y-direction position detection sensor 272 X-direction position detection sensor 274 3rd mounting recess 276 3rd York 278 Flexible Printed Circuit Board for Sensors (FPC for Sensors) 280 Sensor fixing part 282 Connection 284 Terminal section 286 Front Panel 288 Side Panel 290 Slit 292 Through hole 296 Slider 298 Rear metal plate 2100 Front metal plate 2102 Through hole 2104 1st Information Department 2104A First guide groove 2104B First guidance plane 2106 2nd Information Department 2106A Second guide groove 2106B Second Guidance Plane

Claims

1. A guide mechanism for guiding the movement of the optical member is provided. The guide mechanism has a guide portion including a groove and a sliding plane formed in a first member made of metal, and a support portion formed as a plurality of protrusions on a second member made of resin, and some of the plurality of protrusions made of resin fit into the groove made of metal, and the remaining protrusions of the plurality of protrusions contact the sliding plane made of metal, so that the support portion and the guide portion slide. Optical element drive device.

2. The device has one first member and two second members, the first member has the guide portion on both sides of the optical member in the optical axis direction, and an extension direction of the groove provided on one side of the guide portion in the optical axis direction and an extension direction of the groove provided on the other side of the guide portion in the optical axis direction are perpendicular to each other; The two second members sandwich the first member from both sides in the optical axis direction, and one of the second members has a support for supporting the optical member.

2. The optical member driving device according to claim 1.

3. The first plate-like member has a rectangular outer shape, One of the guide portions provided on both sides in the optical axis direction is formed on the surface of a protruding portion that protrudes in a platform shape from the plate surface in the optical axis direction at each of the four corners of the rectangular first member.

3. The optical member driving device according to claim 2.

4. The other of the guide portions is formed on the rear surface of the protruding portion.

4. The optical member driving device according to claim 3.

5. The first member is integrally formed.

2. The optical member driving device according to claim 1.

6. The first member is formed by fixing two metal plates, one of the two metal plates is formed with one of the guide portions provided on both sides in the optical axis direction, and the other of the two metal plates is formed with the other of the guide portions provided on both sides in the optical axis direction.

3. The optical member driving device according to claim 2.

7. The two metal plates each have a rectangular shape. One of the guide portions provided on both sides in the optical axis direction is formed on the surface of a protruding portion that protrudes in a platform shape in the optical axis direction from a plate-shaped surface of one of the metal plates at four corners.

7. The optical member driving device according to claim 6.

8. 2. A camera device comprising: the optical member driving device according to claim 1; and a lens as the optical member.

9. 2. A camera device comprising: the optical member driving device according to claim 1; and an image sensor as the optical member.

10. 10. An electronic device comprising the camera device according to claim 8.

Images