JP2023155197A - Optical member driving device, camera device, and electronic apparatus - Google Patents

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

The present invention relates to an optical member driving device, a camera device, and an electronic device.

Electronic devices such as mobile phones and smartphones are equipped with small camera devices. This type of small camera has a lens drive device, and a known lens drive device includes a camera shake correction function, as shown in Patent Document 1, for example.

Japanese Patent Application Publication No. 2009-217051

In Patent Document 1, a guide mechanism for making the lens movable is provided, and this guide mechanism includes a plurality of protrusions that slide in contact with the guide surface of the guide recess.

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

SUMMARY OF THE INVENTION An object of the present invention is to provide an optical member driving device, a camera device, and an electronic device that solve the above-mentioned conventional problems, prevent the coefficient of friction in the guide mechanism from increasing, and can be made thinner overall. shall be.

One aspect of the present invention is an optical member driving device, and the optical member driving device has a guide mechanism that guides movement of the optical member, and the guide mechanism includes a groove formed in a first metal member and a guide mechanism that guides movement of the optical member. a guide portion including a sliding plane; and a support portion formed as a plurality of protrusions on a second member made of resin, and some of the protrusions of the plurality of protrusions made of resin are attached to the metal. The remaining protrusions of the plurality of protrusions contact the sliding plane made of metal, and the supporting part and the guide part slide.

Preferably, the optical member driving device includes one first member and two second members, and the one first member has the guide portions on both sides of the optical member in the optical axis direction. , an extending direction of the groove provided on one side in the optical axis direction of the guide portion and an extending direction of the groove provided on the other side in the optical axis direction are orthogonal to each other; The two second members sandwich the first member from both sides in the optical axis direction, and have a support on one of them for supporting the optical member.

Preferably, the outer shape of the plate-shaped first member is square, and one of the guide portions provided on both sides in the optical axis direction includes the plate-shaped first member at four corners of the square-shaped first member. It is formed on the surface of a protrusion that protrudes in a trapezoidal shape from the plate surface in the optical axis direction.

Preferably, the other guide portion is formed on the back surface of the protrusion.

Preferably, the first member is integrally formed.

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

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 provided with a plate-shaped plate at the four corners of one of the metal plates. It is formed on the surface of a protrusion that protrudes in a trapezoidal shape from the plate surface in the direction of the optical axis.

Another aspect of the present invention is a camera device, and this camera device includes the optical member driving device of the above aspect and a lens as the optical member.

Another aspect of the present invention is a camera device, and this camera device includes the optical member driving device of the above aspect and an image sensor as the optical member.

Another aspect of the present invention is an electronic device, which includes the camera device according to the above aspect.

According to the present invention, the first member on which the groove and the 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 is formed is made of resin. It is formed by As a result, it is possible to provide an optical member driving device, a camera device, and an electronic device that are less likely to have a large friction coefficient in the guide mechanism and can be made thinner overall.

FIG. 1 is a perspective view of a lens driving device according to an embodiment of the present invention, viewed diagonally from the front. FIG. 1 is a perspective view of a lens driving device according to an embodiment of the present invention, viewed diagonally from behind. FIG. 1 is an exploded perspective view of a lens driving device according to an embodiment of the present invention, broken down into a fixed body and a movable body, and viewed diagonally from the front. FIG. 2 is an exploded perspective view of the movable body of the lens drive device according to the first embodiment of the present invention, as seen diagonally from the front. FIG. 2 is an exploded perspective view of the movable body of the lens drive device according to the first embodiment of the present invention, as seen diagonally from behind. 6(A) is a plan view of the second movable body plate according to the first embodiment of the present invention, FIG. 6(B) is a sectional view taken along the line VIB-VIB in FIG. 6(A), and FIG. 6(C) is a 6( B) is a sectional view taken along the line VIC-VIC, and FIG. 6(D) is an enlarged view of the VID portion in FIG. 7(A) is a bottom view of the lens support according to the first embodiment of the present invention when viewed from the rear, FIG. 7(B) is a sectional view taken along the line VIIB-VIIB in FIG. 7(A), and FIG. ) is a sectional view taken along the line VIIC-VIIC in FIG. 7(A), and FIG. 7(D) is an enlarged view of the VIID portion in FIG. FIG. 2 is a plan view of the moving body according to the first embodiment of the present invention when viewed from the front. 9(A) is a cross-sectional view taken along the line IXA-IXA in FIG. 8, FIG. 9(B) is a cross-sectional view taken along the line IXB-IXB in FIG. 8, and FIG. 9(C) is a cross-sectional view taken along the line IXC-IXC in FIG. , FIG. 9(D) is a sectional view taken along the line IXD-IXD in FIG. 8. It is a perspective view of the modification of the 1st moving body plate of 1st embodiment of this invention. FIG. 2 is an exploded perspective view of a movable body according to a second embodiment of the present invention, as seen diagonally from the front. FIG. 2 is an exploded perspective view of a movable body according to a second embodiment of the present invention, as seen diagonally from behind. FIG. 7 is a plan view of a moving body according to a second embodiment of the present invention when viewed from the front. 14(A) is a sectional view taken along the line XIIIA-XIIIA in FIG. 13, FIG. 14(B) is a sectional view taken along the line XIIIB-XIIIB in FIG. 13, and FIG. 14(C) is a sectional view taken along the line XIIIC-XIIIC in FIG. 13. , FIG. 14(D) is a sectional view taken along the line XIIID-XIIID in FIG. 13. It is a perspective view of the modification of the 1st moving body plate of 2nd embodiment of this invention. FIG. 16(A) is a perspective view of the optical member driving device according to the embodiment of the present invention as seen diagonally from the front, and FIG. 16(B) is a perspective view of the optical member driving device similarly seen diagonally from the rear. be. 17 is a perspective view showing a state in which the case is removed from the perspective view of FIG. 16. FIG. FIG. 1 is an exploded perspective view of an optical member driving device according to an embodiment of the present invention, as seen diagonally from the front. FIG. 1 is an exploded perspective view of the optical member driving device according to the embodiment of the present invention, as seen obliquely from behind. 1 is an exploded perspective view of an optical member driving device according to an embodiment of the present invention, disassembled into main parts and viewed diagonally from the front. FIG. FIG. 21(A) is a perspective view of the slider according to the 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. FIG. 1 is a top view of an optical member driving device according to an embodiment of the present invention. 23(A) is a cross-sectional view taken along the line VIIIA-VIIIA in FIG. 22, and FIG. 23(B) is a cross-sectional view taken along the line VIIIB-VIIIB in FIG. FIG. 24(A) is a cross-sectional perspective view of the cross section of FIG. 23(A) when viewed diagonally from the front, and FIG. 24(B) is a cross-sectional view of the cross section of FIG. 23(B) when viewed diagonally from the front. FIG. 25(A) is a sectional view taken along the line XA-XA in FIG. 22, and FIG. 25(B) is a sectional view taken along the line XB-XB in FIG. FIG. 26(A) is a perspective view of a slider according to a modified example when viewed from the front, and FIG. 26(B) is a perspective view when the slider according to a modified example is viewed from behind. 1 is a perspective view of an image sensor driving device according to an embodiment of the present invention. 28 is a perspective view showing a state in which the case is removed from the perspective view of FIG. 27. FIG. FIG. 1 is an exploded perspective view of the image sensor driving device according to the embodiment of the present invention, viewed from the front side in the optical axis direction. FIG. 2 is an exploded perspective view of the image sensor driving device according to the embodiment of the present invention, viewed from the rear side in the optical axis direction. FIG. 31(A) is a perspective view of the slider according to the embodiment of the present invention when viewed from the front side in the optical axis direction, and FIG. 31(B) is a perspective view of the slider when viewed from the rear side in the optical axis direction. FIG. FIG. 1 is a front view of an optical member driving device according to an embodiment of the present invention. 33(A) is a cross-sectional view taken along line VIIA-VIIA in FIG. 32, and FIG. 33(B) is a cross-sectional perspective view when FIG. 32 is cut along line VIIB-VIIB and viewed from an angle. 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 when FIG. 32 is cut along line VIIIB-VIIIB and viewed from an angle. 35(A) is a cross-sectional view taken along line IXA-IXA in FIG. 32, and FIG. 35(B) is a cross-sectional perspective view when FIG. 32 is cut along line IXB-IXB and viewed from an angle. 36(A) is a cross-sectional view taken along the line XX in FIG. 32, and FIG. 36(B) is a cross-sectional perspective view taken along the line XX in FIG. 32 and viewed from an angle. 37(A) is a sectional view taken along the line XI-XI in FIG. 32, and FIG. 37(B) is a sectional perspective view taken along the line XI-XI in FIG. 32 and viewed from an angle. FIG. 38(A) is a perspective view of the slider of the modified example when viewed from the front side in the optical axis direction, and FIG. 38(B) is a perspective view of the slider of the modified example viewed from the rear side in the optical axis direction. FIG. FIG. 39 is a front view of a modified image sensor driving device. 40(A) is a sectional view taken along the line XIVA-XIVA in FIG. 39, and FIG. 40(B) is a sectional view taken along the line XIVB-XIVB in FIG. 41(A) is a cross-sectional view taken along the line XVA-XVA in FIG. 39, and FIG. 41(B) is a cross-sectional view taken along the line XVB-XVB in FIG.

Embodiments of the present invention will be described based on the drawings. Note that the following embodiments are intended to exemplify an optical member driving device, an image sensor driving device, a camera device, and an electronic device of the present invention, and are intended to limit the present invention to the following embodiments. isn't it.

[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 in a camera device mounted on an electronic device such as a smartphone, together with a lens employed as an optical member.

The lens driving device 10 includes a fixed body 12 and a movable body 14 supported movably with respect to the fixed body 12. As shown in FIGS. 4 and 5, the movable body 14 includes a lens support 16 that supports a lens (not shown), and a first frame 18 that surrounds the lens support 16. The lens support body 16 and the first frame body 18 have a substantially rectangular outer shape when viewed from the front.

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 as the X direction, and the direction perpendicular to the Z direction and the X direction as the Y direction. Further, 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 arranged is referred to as the rear side.

A circular lens attachment hole 20 when viewed from the Z direction is formed inside the lens support 16, and a lens is attached to this lens attachment hole 20.

The first frame 18 includes a first moving body plate 22, a second moving body plate 24, and a first cover 26. The lens support 16 and the second moving body plate 24 are made of engineering plastics such as liquid crystal polymer (LCP), polyacetal, polyamide, polycarbonate, modified polyphenylene ether, and polybutylene terephthalate. Further, the first moving body plate 22 and the first cover 26 are made of metal, for example. Through holes 28, 30, and 32 are formed in the first moving body plate 22, the second moving body plate 24, and the first cover 26, respectively, for allowing light to pass therethrough. The through holes 28, 30, and 32 are each formed into a substantially circular shape.

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

The orthogonal guide mechanism 34 includes 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 section 42 and a first support section 40 . The first guide portion 42 is formed on the rear surface of the first moving body plate 22 and includes a first groove 42A recessed in the +Z direction and a first sliding plane 42B. The first support part 40 is formed as a plurality of protrusions protruding from the front surface of the second moving body plate 24 in the +Z direction, and corresponds to the first support part 40A corresponding to the first groove 42A and the first sliding plane 42B. It includes a first support part 40B. The first support part 40A and the first support part 40B have the same shape, and as shown in FIG. Both ends have a quarter-spherical shape so as to smoothly connect with the semi-cylindrical part.

In the first guide mechanism 36, the first guide part 42 and the first support part 40 are arranged at four corners of the first movable body plate 22 and the second movable body plate 24, which have a rectangular outer shape. Of these, the first guide portion 42 provided at both ends of the -Y side where 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 is extending in the direction. The first guide portions 42 provided at both ends of the opposite +Y side are formed as a first sliding plane 42B, and the first sliding plane 42B extends in the XY plane. The two first support parts 40 on the -Y side are first support parts 40A, and fit into the first grooves 42A. The two first support parts 40 on the +Y side are first support parts 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 to restrict movement in the Y direction, the first moving body plate 22 is moved in the X direction with respect to the second moving body plate 24. only can be moved freely.

As shown in FIGS. 9(A) and 9(B), when viewed from the X direction, the first groove 42A has a V-shape, and the first support portion 40A has a semicircular shape. As a result, the arc-shaped curved surface portion of the first support portion 40A and the V-shaped flat 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, in line contact with each other at two points overall.

The cross-sectional shape of the first support portion 40 is preferably a shape in which the corner portion does not come into contact with the bottom surface of the first groove 42A, and is semicircular, but may be semielliptical. Although the cross-sectional shape of the first groove 42A is V-shaped, it may be U-shaped. By making line contact at two locations, the position of the first support portion 40 in the Y direction with respect to the first groove 42A is determined without wobbling.

Further, as similarly shown in FIGS. 9(A) and 9(B), when viewed from the X direction, the first sliding plane 42B spreads in the Y direction, and the first supporting portion 40B is different from the first supporting portion 40A. It is also semicircular in shape. Thereby, the height of the first movable body plate 22 relative to the second movable body plate 24 in the Z direction can be determined. Further, the width of the first sliding plane 42B in the Y direction is wider than the width of the first support portion 40B in the Y direction. Therefore, even if the dimension between the first support part 40A and the first support part 40B is different from the dimension between the first groove 42A and the first sliding plane 42B within the tolerance range, assembly can be performed.

Further, the first guide portion 42 is made of metal, whereas the first support portion 40 is made of resin. Thereby, the friction coefficient is kept small due to the contact between the metal and the resin. Therefore, the coefficient of friction in the first guide mechanism 36 is unlikely to increase.

The second guide mechanism 38 is provided at the front in the Z direction and includes a second guide section 46 and a second support section 44 . The second guide portion 46 is formed on the front surface of the first moving body plate 22, and includes a second groove 46A recessed in the −Z direction and a second sliding plane 46B. The second support part 44 is formed as a plurality of protrusions protruding from the rear surface of the lens support body 16 in the -Z direction, and has a second support part 44A corresponding to the second groove 46A and a second support part 44A corresponding to the second sliding plane 46B. 2 support portions 44B. The second support part 44A and the second support part 44B have the same shape, and as shown in FIG. 7, the dimension in the Y direction is larger than the dimension in the Both ends have a quarter-spherical shape so as to smoothly connect with the semi-cylindrical part.

In the second guide mechanism 38, the second guide part 46 and the second support part 44 are arranged at four corners of the rectangular lens support body 16 and the first movable body plate 22. Among these, the second guide portion 46 provided at both ends of 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 is in the Y direction. It extends to The second guide portion 46 on the opposite −X side is formed as a second sliding plane 46B, and the second sliding plane 46B extends in the XY plane. The two second support parts 44 on the +X side are second support parts 44A, and fit into the second grooves 46A. The two second support parts 44 on the -X side are second support parts 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 to restrict movement in the X direction, the lens support 16 can only move in the Y direction with respect to the first movable plate 22. It is free. The lens support 16 is movable in the X direction and the Y direction with respect to the second moving body plate 24 by the first guide mechanism 36 and the second guide mechanism 38 .

As shown in FIGS. 9(C) and 9(D), when viewed from the Y direction, the second groove 46A has a V-shape, and the second support portion 44A has a semicircular shape. As a result, the arcuate curved surface portion of the second support portion 44A and the V-shaped flat 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, in line contact with each other at two points overall.

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 semielliptical. Although the cross-sectional shape of the second groove 46A is V-shaped, it may be U-shaped. By making line contact at two locations, the position of the second support portion 44A in the X direction with respect to the second groove 46A is determined without fluctuation.

Further, as similarly shown in FIGS. 9(C) and 9(D), when viewed from the Y direction, the second sliding plane 46B spreads in the X direction, and the second supporting portion 44B is different from the second supporting portion 44A. It is also semicircular in shape. Thereby, the height of the lens support body 16 relative to the first moving body plate 22 in the Z direction can be determined. Further, 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, even if the dimension between the second support part 44A and the second support part 44B is different from the dimension between the second groove 46A and the second sliding plane 46B within the tolerance range, assembly can be performed.

Further, while the second guide portion 46 is made of metal, the second support portion 44 is made of resin. Thereby, the friction coefficient is kept small due to the contact between the metal and the resin. Therefore, the coefficient of friction in the second guide mechanism 38 is unlikely to increase.

The first movable 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, and is a plate-shaped member having a predetermined thickness. For example, it may be formed by an aluminum die-casting method in which a molten aluminum alloy is poured into a mold. Further, the surfaces of the first guide portion 42 and the second guide portion 46 may be subjected to mirror polishing or chemical polishing to reduce surface roughness and reduce the coefficient of friction. Furthermore, a lubricant may be provided between the first guide section 42 and the first support section 40 and between the second guide section 46 and the second support section 44 . Alternatively, the first moving body plate 22 may be manufactured by a powder metallurgy method, and the porous metal body made of copper or the like may be impregnated with a lubricant.

Further, as shown in FIG. 5, the first groove 42A of the first guide portion 42 is formed to be recessed in the +Z direction from the −Z side plate surface of the first moving body plate 22. Further, the first sliding plane 42B is formed parallel to the plate surface of the first movable body plate 22 at a position recessed from the -Z side plate surface of the first movable body plate 22 in the +Z direction. The position of the first sliding plane 42B is shallower than the groove depth of the first groove 42A. Further, as shown in FIG. 4, the first groove 46A and the second sliding plane 46B of the second guide portion 46 are protrusions that protrude in a trapezoidal shape in the +Z direction from the +Z side plate surface of the first moving body plate 22. The second sliding plane 46B is formed parallel to the plate surface of the first moving body plate 22. The position of the second sliding plane 46B is shallower than the groove depth of the second groove 46A.

The structures of the first guide mechanism 36 and the second guide mechanism 38 of the above-described orthogonal direction guide mechanism 34 can also be explained as follows. The first guide mechanism 36 includes a first guide section 42 including a first groove 42A and a first sliding plane 42B formed in the first movable body plate 22 as a first member, and a second movable body plate 22 as a second member. The body plate 24 has a first support portion 40 formed as a protrusion. The first support part 40A fits into the first groove 42A of the first guide part 42, the first support part 40B contacts the first sliding plane 42B of the first guide part 42, and the first guide part 42 and the first The support portion 40 slides. The first moving body plate 22 is made of metal, and the second moving body plate 24 is made of resin.

Further, the second guide mechanism 38 includes a second guide portion 46 including a second groove 46A and a second sliding plane 46B formed in the first movable body plate 22 as a first member, and a lens as a second member. A second support portion 44 is formed as a protrusion on the support body 16. The second support part 44A fits into the second groove 46A of the second guide part 46, the second support part 44B contacts the second sliding plane 46B of the second guide part 46, and the second guide part 46 and the second The support portion 44 slides. The first moving body plate 22 is made of metal, and the lens support 16 is made of resin.

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

Attachment portions 48 are provided at the four corners of the first cover 26 so as to extend rearward in the Z direction. A rectangular mounting hole 50 is formed in this mounting portion 48 . Furthermore, attached portions 52 are formed at the four corners of the second movable body plate 24 so as to protrude laterally. The attachment hole 50 fits into this attachment portion 52, and the first cover 26 is fixed to the second movable body plate 24.

A first magnet 54 and a first yoke 56 are fixed on the outside of the lens support 16 on the +X side and the -Y side. The first magnet 54 on the +X side has an S pole and an N pole formed in the X direction. Further, the first magnet 54 on the −Y side has an S pole and an N pole formed in the Y direction.

Further, a second magnet 58 and a second yoke 60 are fixed to the +Y side of the second moving body plate 24. This second magnet 58 is divided into two parts in the Z direction, each having an S pole and an N pole in the Y direction, and is formed so that the polarities are reversed at the front and back. Further, magnetic members 86, 86 are fixed to the +X side and -Y side of the bottom surface of the second moving body plate 24, corresponding to the rear sides of the first magnets 54, 54. As a result, the lens support 16 is drawn together with the first movable body plate 22 to the second movable body plate 24, and the movable body 14 is assembled into one member.

Next, the relationship between the fixed body 12 and the movable body 14 will be explained. The fixed body 12 has a second frame 62. This second frame 62 surrounds the first frame 18 of the moving body 14 . The second frame 62 includes a base 64 and a second cover 66 attached to the base 64. The base 64 and the second cover 66 have a rectangular shape when viewed from the front, and the second cover 66 is fitted on the outside of the base 64 to form the second frame 62. In addition, through holes 72 and 74 are formed in the bottom surface 68 of the base 64 and the front surface 70 of the second cover 66 to allow light to pass therethrough or to insert lenses.

Further, at the four corners of the base 64, support columns 76 are formed so as to stand up forward from the bottom surface 68, which are divided into two with the corners sandwiched therebetween. A flexible printed circuit board 78 is arranged outside the base 64 so as to surround the support column 76. The flexible printed circuit board 78 is bent into a rectangular shape so as to surround the outer shape of the base 64 and fixed to the support section 76, and a terminal section 80 is formed at the rear portion thereof. Although energization to a first coil 82 and a second coil 84, which will be described later, is controlled via this terminal portion 80, the present invention is not limited thereto.

Inside the flexible printed circuit board 78, first coils 82 are fixed on the +X side and the -Y side. Further, a second coil 84 is fixed to the inside +Y side of the flexible printed circuit board 78. The first coil 82 faces the first magnet 54 and the second coil 84 faces the second magnet 58.

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 in between. Since the 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. Therefore, an attractive force acts on the movable body 14 in the +Y direction toward the fixed body 12.

The movable body 14 is supported by an optical axis direction support mechanism 88 with respect to the fixed body 12 so as to be movable in the Z direction. The optical axis direction support mechanism 88 includes 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 on the movable body 14. By energizing the second coil 84, the movable body 14 moves in the Z direction with respect to the fixed body 12 together with the lens support 16.

In the above configuration, when the first coil 82 facing the first magnet 54 on the +X side is energized, 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. 22 moves in the X direction while being supported by the first guide mechanism 36.

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

Further, when the first coil 82 facing the first magnet 54 on the -Y side is energized, a Lorentz force in the Y 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 lens support 16 is moved in the Y direction while being supported by the second guide mechanism 38. Move to.

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

After the lens support 16 moves in at least one of the X direction and the Y direction, the power supply 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 part 42 and the first support part 40, and the second guide part 46 and the second support part 44, the lens The support body 16 remains at the position where the energization is stopped.

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

Moreover, since the first movable plate 22 is entirely made of metal, the thickness in the Z direction can be reduced, and the entire lens driving device 10 can be made thinner.

Note that, as in the modification shown in FIG. 10, a slit 22A extending in the XY direction as a gap is provided between the first guide part 42 and the second guide part 46, so that the first movable body plate 22 is provided only on one predetermined side. It may be connected to the main body of. As a result, as in the second embodiment described later, when an impact is received, the portion of the first moving body plate 22 where the first guide part 42 and the second guide part 46 are provided elastically deforms to soften the impact. Damage to the first support part 40 and the second support part 44 can be suppressed.

[Second embodiment]
In the first embodiment described above, a case has been described in which 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 moving body plate may be formed by integrating two metal plates, as in a second embodiment described below. In that case, the first guide part is formed on one of the two metal plates, and the second guide part is formed on the other of the two metal plates. Hereinafter, a lens driving device 10' according to a 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 components will be described using the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 11 and 12, the first movable plate 98 includes two metal plates: a rear metal plate 100 placed on the -Z side and a front metal plate 102 placed on the +Z side. They are formed so as to overlap in the Z direction. The rear metal plate 100 and the front metal plate 102 are approximately rectangular in shape, 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. There is.

The front metal plate 102 and the rear metal plate 100 are integrated with each other by a fixing method such as welding, caulking, screwing, or adhesion, except for the first guide part 104 and the second guide part 106. Furthermore, the rear metal plate 100 in the first guide section 104 and the front metal plate 102 in the second guide section 106 overlap with each other with a gap provided in the optical axis direction, as described below.

Of the first guide portions 104, the first guide portions 104 provided at both ends of the −Y side where the first magnet 54 and the magnetic member 86 are provided are formed as a V-shaped first groove 104A. One groove 104A extends in the X direction. The first guide portions 104 provided at both ends of the opposite +Y side are formed as a first sliding plane 104B, and the first sliding plane 104B extends in the XY plane. The first groove 104A is 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. ing. The first grooves 104A of the first guide portion 104 are connected to the main body portion of the first movable body plate 98 only on the +Y side. Furthermore, the first sliding planes 104B of the first guide portion 104 are connected to the main body portion of the first movable body plate 98 only on the -Y side. The position of the first sliding plane 104B is shallower than the groove 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.

The two first support parts 40A on the -Y side fit into the first grooves 104A, and the two first support parts 40B on the +Y side are in contact with the first sliding plane 104B. Since the first groove 104A extending in the X direction and the first support portion 40A fit together so as to restrict movement in the Y direction, the first movable plate 98 is moved in the X direction with respect to the second movable plate 24. only can be moved freely. Although an example has been described in which the first groove 104A is formed as a V-shaped groove, it may be formed as a U-shaped groove.

Further, of the second guide portion 106, the second guide portion 106 provided at both ends of the +X side side where the first magnet 54 and the magnetic member 86 are provided is formed as a V-shaped second groove 106A, The second groove 106A extends in the Y direction. The second guide portions 106 provided at both ends of the opposite −X side are formed as a second sliding plane 106B, and the second sliding plane 106B extends in the XY plane. These second guide portions 106 are formed as projecting portions projecting in the +Z direction from the plate surface of the front metal plate 102 in a trapezoidal shape. This protrusion is formed by bending the plate-shaped front metal plate 102. Further, the second groove 106A is formed by further bending this protrusion. The second sliding plane 106B is a flat surface of this protrusion. The second grooves 106A of the second guide portion 106 are connected to the main body portion of the first movable body plate 98 only on the −X side. Further, the second sliding plane 106B of the second guide portion 106 is connected to the main body portion of the first movable body plate 98 only on the +X side. The position of the second sliding plane 106B is shallower than the groove depth of the second groove 106A.

The two second support parts 44A on the +X side fit into the second grooves 106A, and the two second support parts 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 portion 44A fit together to limit movement in the X direction, the lens support 16 can only move in the Y direction with respect to the first movable plate 22. It is free. Thereby, the lens support body 16 is movable in the X direction and the Y direction with respect to the second movable body plate 24. Although an example has been described in which the second groove 106A is formed as a V-shaped groove, it may be formed as a U-shaped groove.

As described above, the rear metal plate 100 in the first guide part 104 and the front metal plate 102 in the second guide part 106 overlap with each other with a gap provided in the optical axis direction. As a result, when an impact is applied, at least one of the first guide part 104 and the second guide part 106 bends and absorbs the impact, thereby supporting the first support part 40 and the second support part 44 made of resin. Damage can be suppressed.

Specifically, the groove depth of the first groove 104A and the groove depth of the second groove 106A are adjusted so that the rear metal plate 100 in the first guide part 104 and the front metal plate 102 in the second guide part 106 do not come into contact with each other. The height of the protrusion is determined. These dimensions are determined in consideration of dimensional tolerances, dead weight, deflection due to the attractive force between the first magnet 54 and the magnetic member 86, deflection during normal use, deflection due to impact, and the like. For other parts, 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. Therefore, it is possible to ensure sufficient spacing.

The operation of the orthogonal direction guide mechanism 34 of the second embodiment described above in the XY direction is substantially the same as the operation of the orthogonal direction guide mechanism 34 of the first embodiment, so a detailed explanation will be omitted. Assume that a force in the +Z direction is applied to the orthogonal direction guide mechanism 34 of the second embodiment described above. That is, in this case, the second moving body plate 24 pushes the first moving body plate 98 in the +Z direction, and the first moving body plate 98 pushes the lens support body 16 in the +Z direction. In the first guide mechanism 36, the first support part 40A on the -Y side fits into the first groove 104A, and the first support part 40B on the +Y side is in contact with the first sliding plane 104B, and the second movable body plate The first support portion 40 of No. 24 bends and deforms the rear metal plate 100 in the portion where the first guide portion 104 is formed in the +Z direction.

Further, in the second guide mechanism 38 of the orthogonal direction guide mechanism 34, the second support part 44A on the +X side fits into the second groove 106A, and the second support part 44B on the -X side contacts the second sliding plane 106B. In this state, the front metal plate 102 in the portion where the second guide portion 106 is formed deforms while being bent in the -Z direction and pushes the second support portion 44 of the lens support 16.

At this time, there is a gap between the rear metal plate 100 where the first guide part 104 is formed and the front metal plate 102 where the second guide part 106 is formed. Therefore, the rear metal plate 100 in the part where the first guide part 104 is formed can bend and deform in the +Z direction, and the front metal plate 102 in the part in which the second guide part 106 is formed can bend and deform in the -Z direction. Yes, but the two do not come into contact. Therefore, the first guide part 104 and the second guide part 106 can be sufficiently elastically deformed and can absorb shock. Note that even when a force in the -Z direction is applied, the gap between the rear metal plate 100 in the area where the first guide part 104 is formed and the front metal plate 102 in the area where the second guide part 106 is formed is similar. deforms so that the gap becomes narrower.

Note that the first guide section 104 and the second guide section 106 do not need 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 each of the four corners of the rectangular first moving body plate 98. However, the first guide parts 104 are arranged at both ends of the sides on the ±X side, and the second guide parts 106 are arranged at both ends of the sides on the ±Y side, so that they do not overlap. A slit 98A is provided between each of the first guide section 104 and the second guide section 106 and the main body of the first moving body plate 98. As a result, the first guide part 104 forming the first groove 104A is connected to the main body of the first moving body plate 98 only on the +Y side, and the first guide part 104 forming the first sliding plane 104B is connected to the -Y side. It is connected to the main body portion of the first moving body plate 98 only at this point. Further, the second guide portion 106 forming the second groove 106A 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 forming the second sliding plane 106B is connected to the +X side. Only the first movable body plate 98 is connected to the main body portion.

In this modification, there is no need to integrate two metal plates, and it can be formed, for example, from a single metal plate by press working or the like. Moreover, by not overlapping the first guide part 104 and the second guide part 106, there is no restriction in the height direction, and the plate surface of the metal plate can be directly connected to the first sliding plane 104B and the second sliding plane 106B. Therefore, 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 protrusion. That is, the first guide portion 104 and the second guide portion 106 extend from the main body portion of the first movable body plate 98 in the inward direction of the plate surface without providing any protruding portions. Note that the first moving body plate 98 of this modification may be manufactured by other methods such as casting.

Note that in the first and second embodiments described above, the lens driving device 10 used in a camera device installed in an electronic device such as a mobile phone or a smart phone has been described, but the present invention is also applicable to other devices. be.

Further, in the first and second embodiments described above, the guide mechanism in which the groove is formed of metal and the protrusion that fits into the groove is formed of resin is used to move the lens support in a direction perpendicular to the optical axis direction of the lens. The case where the present invention is applied to an orthogonal direction guide mechanism for blur correction has been explained. Further, 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 relative to the fixed body 12 in the optical axis direction of the lens. . Further, for example, an image sensor may be employed as the optical member and applied to an orthogonal direction guide mechanism for camera shake correction that moves the image sensor in a direction perpendicular to the optical axis.

For example, in the former case, the guide mechanism replaces the optical axis direction support mechanism 88, and includes a guide section formed as a groove extending in the Z direction and a sliding plane extending in the ZX direction on the first metal member. A support portion formed as a protrusion is provided on the 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.

[Third embodiment]
16 to 25 show a third embodiment of the optical member driving device 110 of the present invention. The optical member driving device 110 houses 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.

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

Optical member driving device 110 includes a base 120, a case 112 fixed to base 120, a sub-base 114 fixed to case 112, and a lens carrier 116 disposed inside sub-base 114. The lens carrier 116 holds a lens (not shown) and is supported movably in the optical axis direction of the lens.

Optical member driving device 110 further includes a sensor holder 124 supported movably in an orthogonal direction orthogonal to the optical axis direction, and a slider 196 disposed between sensor holder 124 and base 120. The sensor holder 124 holds an image sensor 128 fixed to a first flexible printed circuit board (hereinafter referred to as a first FPC (flexible printed circuit)) 126 .

As shown in FIGS. 16(A) and 16(B), the case 112 is a box having a substantially square front plate 130 when viewed from the Z direction, and a side wall 134 extending from the periphery of the front plate 130 in the −Z direction. It has a mold shape, and the front plate 130 has a through hole 136 for passing light and four mounting holes 148 around the through hole 136.

The sub-base 114 has a box-like shape including a bottom plate 138 that is substantially rectangular when viewed from the Z direction, and side walls 140 extending 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 a space surrounded by the bottom plate 138 and the side walls 140. The -Y side of the sub base 114 is an opening 142. A through hole 144 is formed in the bottom plate 138 to allow light to pass therethrough. Attachment protrusions 146 are formed at the front ends of the four corners of the side wall 140 and are fitted into attachment holes 148 to fix the sub base 114 to the case 112.

The lens carrier 116 has a rectangular parallelepiped shape with a substantially square shape when viewed from the Z direction, and a circular through hole 132 to which a lens (not shown) is attached is formed passing through from the front side to the rear side. Lens carrier 116 is made of resin. A plate-shaped third magnet 1112 and a third yoke 1114 are fixed to the -Y side side surface 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 has an S pole and an N pole on its plate surface, and is magnetized so that the polarities are reversed in the front and back.

The optical axis direction guide mechanism 118 includes two guide shafts 152 attached to fixing holes 150 provided at both ends of the -Y side of the bottom plate 138 of the sub-base 114, and correspondingly two guide shafts 152 attached to the -Y side end portions of the bottom plate 138 of the sub-base 114. It is comprised of guide holes 154 provided at both ends on the Y side, into which the guide shaft 152 is inserted.

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

The guide hole 154 is formed as a hollow through hole that penetrates 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 its +Y side portion open toward the -Y side, and its -Y side portion is square. The cross-sectional shape of the −Y side portion may be semicircular. The guide hole 154 makes line contact with the outer surface of the guide shaft 152 at two V-shaped locations. Thereby, the lens carrier 116 can be accurately positioned with respect to the sub-base 114 in the X direction and the Y direction.

The guide hole 154 located on the +X side includes at least two wall surfaces facing each other in the Y direction in the cross section in the XY direction. These two wall surfaces protrude in a curved shape so that the center portion in the Z direction is closest to each other, and the outer surface of the guide shaft 152 and the center portion in the Z direction of the wall surface on the +Y side make point contact at one point, so frictional resistance is generated. can be made smaller. With this configuration, the lens carrier 116 is supported movably in the optical axis direction relative to the sub-base 114.

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

A first coil 1118 is fixed to the +Y side outer surface of the second FPC 1116, and a second coil 1120 is fixed to the +X side outer surface. A third coil 1122 is fixed to the -Y side inner surface of the second FPC 1116 so as to face the third magnet 1112. A fifth yoke 1124 is fixed to the -Y side outer surface of the second FPC 1116 so as to face the third magnet 1112 with a third coil 1122 in between. 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, causing it to be pressed against the two guide shafts 152.

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

The base 120 includes a bottom plate 156 having a substantially rectangular shape when viewed from the Z direction and having a through hole 162 in the center, a fixing convex portion 158 protruding from the periphery of the bottom plate 156 in the +Z direction, and a periphery of the bottom plate 156 on the −Y side. It has an FPC fixing wall 160 that protrudes in the +Z direction higher than the fixing convex part 158 from the central part of the FPC fixing wall 160 . Base 120 is made of resin. The side wall 134 of the case 112 is fitted around the fixed protrusion 158, and the case 112 and the base 120 are combined.

As shown in FIG. 20, fourth yoke fixing parts 164 are formed inside the fixing convex parts 158 on the +X side and +Y side, respectively, and a fourth yoke 166 is fixed thereto. Furthermore, first support protrusions 194A and 194B of the orthogonal guide mechanism 122 formed of resin are provided inside the 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 close the through hole 162 from the −Z side.

The sensor holder 124 includes a bottom plate part 172 that has a substantially square shape when viewed from the Z direction and has a through hole 170 in the center, and a side plate part 174 that protrudes in the +Z direction from the middle between the outer edge and the inner edge of the bottom plate part 172. have 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. Sensor holder 124 is made of resin. The sub-base 114 and the members attached thereto are spaced apart from the sensor holder 124 and the members attached thereto.

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 has a north pole or a south 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 has a north pole or a south pole. A fourth magnet fixing part 176 is formed on the +X side and +Y side peripheral edges of the rear surface of the bottom plate part 172, and a fourth plate-shaped magnet 178 facing the fourth yoke 166 is fixed, and the sensor holder 124 and the base 120 and are attracted to each other.

A concave portion 172A recessed inward is provided on both sides of the fourth magnet fixing portion 176 at the outer edge of the bottom plate portion 172 on the +Y side. Convex portions 172B protruding in the +Z direction are provided at the corners of three sides of the outer edge of the bottom plate portion 172 excluding the −Y side. A corner portion of the outer edge of the bottom plate portion 172 functions as a stopper. Second support convex portions 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.

The first FPC 126 has a flat plate part 180 having a substantially rectangular shape when viewed from the Z direction and a pair of band parts 184, and an image sensor 128 is placed on the flat plate part 180. The strip portion 184 extends in the +Z direction from the +Y side side of the flat plate portion 180, passes through the recess 172A, and extends around the outer periphery of the side plate portion 174 of the sensor holder 124 toward the −Y side. The pair of strips 184 are arranged symmetrically with respect to a plane passing through the center of the first FPC 126 in the X direction and parallel to the YZ direction. In the first FPC 126 , the front side of the flat plate part 180 is fixed to the rear side of the sensor holder 124 , and the strip part 184 is fixed to the outer side of the FPC fixing wall 160 of the base 120 . As shown in FIGS. 24(A) and 24(B), the strip portion 184 is located between the side plate portion 174 and a convex portion 172B on the outer edge of the bottom plate portion 172 with a gap between the side plate portion 174 and the side plate portion 174. , the rear end of the band-like portion 184 is located on the rear side of the front end of the convex portion 172B, and the influence of the band-like portion 184 on the movement of the sensor holder 124 is small.

The first FPC 126 is pulled out in the -Y direction from the -Z side of the fixed band-shaped part 184 to form a terminal part 182, and current supply, signal output, etc. are performed to the image sensor 128 via the terminal part 182. Therefore, the second FPC 1116 and the first FPC 126 are each pulled out in the -Y direction, and can be connected to the outside only on one side of the optical member driving device 110.

The slider 196 is a plate-shaped metal member that is disposed between the base 120 and the sensor holder 124, has a substantially square shape when viewed from the Z direction, and has a through hole 1102A in the center. A recess 1102B recessed toward the -Y side and the -X side, respectively, is formed on one side on the +Y side and one side on the +X side of the outer edge of the slider 196, and accommodates the fourth yoke fixing part 164. A first guide groove 192A and a first guide plane 192B of the orthogonal 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. .

The orthogonal direction guide mechanism 122 includes 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 part 192 and a first support part 194. The first guide portion 192 is formed on the rear side of the slider 196, and includes a first guide groove 192A having a V-groove shape recessed in the +Z direction and extending in the X direction, and a first guide plane 192B parallel to the XY direction. The first support portion 194 includes a first support convex portion 194A corresponding to a first guide groove 192A formed on the front side surface of the bottom plate 156 of the base 120 so as to protrude in the +Z direction, and a first support portion corresponding to the first guide plane 192B. It includes a convex portion 194B. The first support convex portion 194A and the first support convex portion 194B have the same shape, the dimension in the X direction is larger than the dimension in the Y direction, and at least the tip portion has a semi-cylindrical shape as a whole. Both ends have a 1/4 sphere shape so as to smoothly connect with the semi-cylindrical part.

The first guide groove 192A and the first support protrusion 194A are provided at both ends of the +Y side, and the first guide plane 192B and the first support protrusion 194B are provided at both ends of the -Y side. As shown in FIGS. 25(A) and 25(B), in a cross section parallel to the YZ plane, the first support convex portion 194A and the first guide groove 192A are in contact with each other at two points and slide. The first support convex portion 194B and the first guide plane 192B contact at one point and slide. Overall, the first support protrusion 194A and the first guide groove 192A slide in line contact at two places, and the first support protrusion 194B and the first guide plane 192B slide in line contact at one place. . Since the first guide groove 192A extending in the X direction and the first support convex portion 194A are fitted to restrict movement in the Y direction, the slider 196 is movable only in the X direction with respect to the base 120. .

Further, the top of the first support convex portion 194B in the Z direction contacts the first guide plane 192B that extends in the XY direction. Thereby, the height of the slider 196 relative to the base 120 in the Z direction can be determined. Further, the width of the first guide plane 192B in the Y direction is wider than the width of the first support convex portion 194B in the Y direction. Therefore, assembly can be performed even if the dimensions between the first support protrusion 194A and the first support protrusion 194B are different from the dimensions between the first guide groove 192A and the first guide plane 192B within the tolerance range. .

The second guide mechanism 190 includes a second guide part 198 and a second support part 1100. The second guide section 198 includes a V-shaped second guide groove 198A that is recessed in the -Z direction and extends in the Y direction, which is formed in a platform-shaped protrusion that protrudes in the +Z direction on the front side surface of the slider 196, and an XY It includes a second guide plane 198B parallel to the direction. The second support portion 1100 includes a second support protrusion 1100A corresponding to a second guide groove 198A formed on the rear side surface of the sensor holder 124 so as to protrude in the −Z direction, and a second support protrusion corresponding to the second guide plane 198B. 1100B. 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. be.

The second guide groove 198A and the second support protrusion 1100A are provided at both ends of the -X side, and the second guide plane 198B and the second support protrusion 1100B are provided at both ends of the +X side. As shown in FIGS. 23(A), 23(B), 24(A), and 24(B), in a cross section parallel to the ZX plane, the second support convex portion 1100A and the second guide groove 198A contact at two points, and the second support convex portion 1100B and the second guide plane 198B contact at one point and slide. Overall, the second support protrusion 1100A and the second guide groove 198A slide in line contact at two locations, and the second support protrusion 1100B and the second guide plane 198B slide in line contact at one location. . Since the second guide groove 198A extending in the Y direction and the second support protrusion 1100A are fitted to restrict movement in the X direction, the sensor holder 124 is movable only in the Y direction with respect to the slider 196. . The sensor holder 124 is movable in the X direction and the Y direction with respect to the base 120 by the first guide mechanism 188 and the second guide mechanism 190.

Furthermore, the top of the second support convex portion 1100B in the Z direction contacts the second guide plane 198B that extends in the XY direction. Thereby, the height of the sensor holder 124 relative to the slider 196 in the Z direction can be determined. Further, the width of the second guide plane 198B in the X direction is wider than the width of the second support convex portion 1100B in the X direction. Therefore, assembly can be performed even if the dimensions between the second support protrusion 1100A and the second support protrusion 1100B are different from the dimensions between the second guide groove 198A and the second guide plane 198B within the tolerance range. .

Further, the first guide part 192 and the second guide part 198 are made of metal, and the first support part 194 and the second support part 1100 are made of resin. Thereby, the friction coefficient is kept small due to the contact between the metal and the resin. Therefore, the coefficient of friction in the orthogonal direction guide mechanism 122 is unlikely to increase.

The slider 196 including the first guide part 192 and the second guide part 198 is formed of a non-magnetic metal, for example, an aluminum alloy, and is a plate-shaped member having a predetermined thickness. For example, it may be formed by an aluminum die-casting method in which a molten aluminum alloy is poured into a mold. Furthermore, the slider 196 may be made of a stainless steel alloy. Further, the surfaces of the first guide part 192 and the second guide part 198 may be subjected to mirror polishing or chemical polishing to reduce surface roughness and reduce the coefficient of friction.

On the other hand, the base 120 and the sensor holder 124 on which the first support part 194 and the second support part 1100 are provided are made of resin, for example, a fluorine-containing liquid crystal polymer resin. The first support part 194 and the second support part 1100 may be formed of resin, and the base 120 and the sensor holder 124 may be formed by insert molding and reinforced with metal. Further, a fluororesin lubricant may be interposed between the first guide section 192 and the first support section 194 and between the second guide section 198 and the second support section 1100. Alternatively, the slider 196 may be manufactured by a powder metallurgy method, and the porous metal body made of copper or the like may be impregnated with a lubricant.

Further, as shown in FIG. 21(B), the first guide portion 192 is formed to be recessed in the +Z direction from the -Z side plate surface of the slider 196, and the first guide plane 192B is located in the first guide groove. It is located at a position shallower than the groove depth of 192A. Further, as shown in FIG. 21(A), the second guide portion 198 is formed as a protrusion that protrudes 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 It is located at a position shallower than the groove depth of the second guide groove 198A. Furthermore, the extending directions of the first guide groove 192A and the second guide groove 198A provided in the slider 196 are orthogonal to each other.

In the above configuration, when the first coil 1118 is energized, 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 with respect to the slider 196. When the power supply to the first coil 1118 is stopped, the sensor holder 124 is stopped at that position due to the attraction force between the fourth magnet 178 and the fourth yoke 166, the friction of the second guide mechanism 190, etc.

When the second coil 1120 is energized, an electromagnetic force in the X direction is generated, and the sensor holder 124 is guided by the first guide mechanism 188 together with the slider 196 and moves in the X direction. When the power supply to the second coil 1120 is stopped, the sensor holder 124 and the slider 196 are moved to the position due to the attraction force between the fourth magnet 178 and the fourth yoke 166, the friction between the first guide mechanism 188, etc. Stop.

When the third coil 1122 is energized, an electromagnetic force in the Z direction is generated, and the lens carrier 116 is guided by the optical axis direction guide mechanism 118 and moves in the Z direction. When the power supply to the third coil 1122 is stopped, the lens carrier 116 is stopped at that position due to the attraction force between the third magnet 1112 and the fifth yoke 1124, the friction of the optical axis direction guide mechanism 118, etc.

When the optical member driving device 110 receives an impact in the Z direction, the first guide section 192 and the first support section 194, and the second guide section 198 and the second support section 1100 are separated by a small distance, respectively. Leave and immediately return to the original position. Since the contact state in the first guide mechanism 188 and the second guide mechanism 190 is line contact, there is no damage to the metal first guide part 192 and second guide part 198, and the resin first guide part 192 and second guide part 198 are not damaged. Since the support part 194 and the second support part 1100 are elastically deformed and return to their original state, there is almost no damage. Further, since the guide shaft 152 and the guide hole 154 maintain contact with each other, there is almost no damage.

Further, when the optical member driving device 110 receives an impact in the X direction or the Y direction, the first guide part 192 and the first support part 194, and the second guide part 198 and the second support part 1100 almost maintain a contact state. So there is almost no damage. Further, even if the guide shaft 152 and the guide hole 154 are separated, they each return to their original positions immediately after being separated by a small distance. At this time, since the guide hole 154 is made of resin and is elastically deformed, there is almost no damage to the guide shaft 152 or the guide hole 154.

[Modified example]
In the third embodiment, the slider 196 is constructed as a single metal member made of aluminum die-casting or the like, but the present invention is not limited to the third embodiment. The slider 196 may be a slider 1134 that is formed by integrating two metal plates in which a first guide portion is formed on one side and a second guide portion is formed on the other side, as in a modification shown below. Note that the optical member driving device of the modified example is the same as the optical member driving device 110 of the third embodiment except for the configuration of the slider 1134. Therefore, the same configurations will be described using the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 26(A) and 26(B), the slider 1134 consists of two metal plates: a rear metal plate 1136 placed on the -Z side and a front metal plate 1138 placed on the +Z side. The bodies are formed so that they overlap in the Z direction. The rear metal plate 1136 and the front metal plate 1138 have a substantially rectangular shape, and a substantially rectangular through hole 1140 is formed in the center, and one side on the +Y side and one side on the +X side of the outer periphery correspond to the recess 1102B. A recess 1142 is formed in each. Further, 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.

The front metal plate 1138 and the rear metal plate 1136 are integrated with each other by a fixing method such as welding, caulking, screwing, or adhesion, except for the first guide part 1144 and the second guide part 1146. Further, the rear metal plate 1136 in the first guide part 1144 and the front metal plate 1138 in the second guide part 1146 overlap with each other with a gap provided in the Z direction.

The first guide part 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. Further, 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. Like the second guide portion 198, the second guide portion 1146 is formed as a protruding portion projecting in the +Z direction from the +Z side plate surface 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 plane 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 plane 1146B is connected to the main body of the rear metal plate 1136 only on the +X side.

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 each other 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 and absorbs the impact, thereby preventing damage to the first support part 194 and the second support part 1100 made of resin. It can be further suppressed.

Specifically, the groove depth of the first guide groove 1144A and the groove depth of the second guide groove 1146A are adjusted so that the rear metal plate 1136 in the first guide part 1144 and the front metal plate 1138 in the second guide part 1146 do not come into contact with each other. The depth of the groove and the height of the protrusion in which the second guide portion 1146 is formed are determined. These dimensions are determined in consideration of dimensional tolerances, as well as dead weight, deflection due to the attractive force of the fourth magnet 178 and fourth yoke 166, deflection during normal use, deflection due to impact, and the like. For other locations, the position of the first guide plane 1144B is at a position shallower than the groove depth of the first guide groove 1144A, and the position of the second guide plane 1146B is at a position shallower than the groove depth of the second guide groove 1146A. Therefore, it is possible to ensure sufficient spacing.

In the modified orthogonal 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 the slider 1134 in the -Z direction. Push back 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 portion where the first guide portion 1144 is formed in the +Z direction. The front metal plate 1138 in the portion where the second guide portion 1146 is formed presses the second support portion 1100 while being elastically deformed in the −Z direction.

There is a gap between the rear metal plate 1136 of the part where the first guide part 1144 is formed and the front metal plate 1138 of the part where the second guide part 1146 is formed, so that it can be bent and deformed. However, the two do not come into contact. Therefore, the first guide part 1144 and the second guide part 1146 can be sufficiently elastically deformed and can absorb shock. - Even when a force in the Z direction is applied, the gap between the rear metal plate 1136 of the part where the first guide part 1144 is formed and the front metal plate 1138 of the part where the second guide part 1146 is formed is similarly reduced. deforms so that it becomes narrower.

Note that in the third embodiment, the optical member driving device 110 used in a camera device installed in an electronic device such as a mobile phone or a smart phone has been described, but the present invention is also applicable to other devices.

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

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 orthogonal to the Z direction as the X direction, and the direction orthogonal to both the Z direction and the X direction. The direction parallel to the short sides of the rectangle is defined as the Y direction. The side on which light enters the light receiving surface of the image sensor 212 is defined as the +Z side or front side, and the opposite side is defined as the -Z side or rear side.

The image sensor driving device 210 includes a sensor holder 214 that fixes an image sensor 212 having a light-receiving surface on the front side from the rear side, a slider 242 arranged on the rear side of the sensor holder 214, and a slider 242 arranged on the rear side of the slider 242. The base 216 is a non-movable body. The sensor holder 214, the slider 242, and the base 216 have a rectangular shape with long sides and short sides corresponding to the long sides and short sides of the image sensor 212, and the sensor holder 214 is attached to the four corners of the base 216 to receive light. A guide mechanism 218 is formed to guide and support movably in a direction parallel to the plane.

As shown in FIGS. 29 and 30, the sensor holder 214 is composed of a rectangular flat plate parallel to the XY plane, with a long side in the X direction and a short side in the Y direction. The +Z side surface of the sensor holder 214 is planar, and stoppers 220 protrude columnarly in the +Z direction at its four corners. On the -Z side surface of the sensor holder 214, a drive member mounting portion 222 is protruded from the plate surface in the -Z direction in the shape of a table.

The slider 242 is composed of a flat metal plate parallel to the XY plane, and has a rectangular shape with a long side in the X direction and a short side in the Y direction. A through hole 248 having a rounded rectangular shape is provided in the center thereof.

The base 216 has a box shape that is open on the +Z side and includes a bottom portion 224 parallel to the XY plane and a side wall 226 standing in the +Z direction from the entire outer edge of the bottom portion 224, and accommodates the sensor holder 214 therein. The bottom portion 224 has a long side in the X direction and a short side in the Y direction, and is larger than the long side and the short side of the sensor holder 214, respectively. Extensions 228 that further extend in the +Z direction are provided at the four corners of the side wall 226, and a gap 230 is formed between the two extensions 228 on the short sides. A case 232, which will be described later, is fitted to the outside of the extending portion 228, thereby forming a housing of the image sensor driving device 210.

The guide mechanism 218 is formed at the four corners of the sensor holder 214, the slider 242, and the base 216, and includes 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 part 238 and a first support part 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 part 240 is formed on the front side of the bottom part 224 of the base 216 so as to protrude in the +Z direction, and includes a first support protrusion 240A and a first support protrusion 240B, and the first support protrusion 240A is a first guide. The first support protrusion 240B corresponds to the groove 238A and the first guide plane 238B. The first supporting convex portion 240A and the first supporting convex portion 240B have the same shape, the dimension in the X direction is larger than the dimension in the Y direction, and at least the tip portion has a semi-cylindrical shape as a whole, and Both ends have a 1/4 sphere shape so as to smoothly connect with the semi-cylindrical part.

The first guide groove 238A and the first support protrusion 240A are provided at both ends of the +Y side, and the first guide plane 238B and the first support protrusion 240B are provided at both ends of the -Y side. As shown in FIGS. 36(A), 36(B), 37(A), and 37(B), in a cross section parallel to the YZ plane, the first support convex portion 240A and the first guide groove 238A The first support convex portion 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 locations, and the first support protrusion 240B and the first guide plane 238B slide in line contact at one location. . Since the first guide groove 238A extending in the X direction and the first support protrusion 240A fit together so as to restrict movement in the Y direction, the slider 242 is movable only in the X direction with respect to the base 216. .

Further, the top of the first support convex portion 240B in the Z direction contacts the first guide plane 238B that extends in the XY direction. Thereby, the height of the slider 242 relative to the base 216 in the Z direction can be determined. Further, the width of the first guide plane 238B in the Y direction is wider than the width of the first support convex portion 240B in the Y direction. Therefore, assembly can be performed even if the dimensions between the first support protrusion 240A and the first support protrusion 240B are different from the dimensions between the first guide groove 238A and the first guide plane 238B within the tolerance range. .

The second guide mechanism 236 includes a second guide part 244 and a second support part 246. The second guide portion 244 is formed as a platform-shaped protrusion that protrudes in the +Z direction on the front side surface of the slider 242, and is in the XY plane with a V-shaped second guide groove 244A that is recessed in the -Z direction and extends in the Y direction. includes a second guide plane 244B parallel to . The second support portion 246 is formed on the rear surface of the sensor holder 214 so as to protrude in the −Z direction, and includes a second support convex portion 246A corresponding to the second guide groove 244A and a second support convex portion corresponding to the second guide plane 244B. 246B. The shapes of the second support protrusion 246A and the second support protrusion 246B are the same as 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.

The second guide groove 244A and the second support protrusion 246A are provided at both ends of the +X side, and the second guide plane 244B and the second support protrusion 246B are provided at both ends of the −X side. As shown in FIGS. 33(A), 33(A), 34(A), and 34(B), in a cross section parallel to the Z-X plane, the second support convex portion 246A and the second guide groove 244A contact at two points, and the second support convex portion 246B and the second guide plane 244B contact at one point and slide. Overall, the second support protrusion 246A and the second guide groove 244A slide in line contact at two locations, and the second support protrusion 246B and the second guide plane 244B slide in line contact at one location. . Since the second guide groove 244A extending in the Y direction and the second support protrusion 246A are fitted so as to restrict movement in the X direction, the sensor holder 214 is movable only in the Y direction with respect to the slider 242. . The sensor holder 214 is movable in the X direction and the Y direction with respect to the base 216 by the first guide mechanism 234 and the second guide mechanism 236.

Furthermore, the top of the second support convex portion 246B in the Z direction contacts the second guide plane 244B that extends in the XY direction. Thereby, the height of the sensor holder 214 relative to the slider 242 in the Z direction can be determined. Further, the width of the second guide plane 244B in the X direction is wider than the width of the second support convex portion 246B in the X direction. Therefore, assembly can be performed even if the dimensions between the second support protrusion 246A and the second support protrusion 246B are different from the dimensions between the second guide groove 244A and the second guide plane 244B within the tolerance range. .

The shape of the first support convex part 240A and the second support convex part 246A is preferably such that the top part does not come into contact with the bottom surface of the first guide groove 238A and the second guide groove 244A. Other shapes may also be used. Although the cross-sectional shapes of the first guide groove 238A and the second guide groove 244A are V-shaped, they may be U-shaped.

Further, the first guide part 238 and the second guide part 244 are made of metal, and the first support part 240 and the second support part 246 are made of resin. Thereby, the friction coefficient is kept small due to the contact between the metal and the resin. Therefore, the coefficient of friction in the guide mechanism 218 is unlikely to increase.

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

On the other hand, the base 216 on which the first support part 240 is provided and the sensor holder 214 on which the second support part 246 is provided are made of resin, for example, a fluorine-containing liquid crystal polymer resin. It may be formed by insert molding and reinforced with metal. Furthermore, a fluororesin lubricant may be interposed between the first guide section 238 and the first support section 240 and between the second guide section 244 and the second support section 246. Alternatively, the slider 242 may be manufactured by a powder metallurgy method, and the porous metal body made of copper or the like may be impregnated with a lubricant.

Further, as shown in FIG. 31, the second guide portion 244 is formed as a protruding portion projecting in the +Z direction from the plate surface on the +Z side of the slider 242, and the first guide portion 238 is formed as a protrusion portion on the −Z side of the slider 242. It is formed to be recessed in the +Z direction from the Z side plate surface. The position of the first guide plane 238B is at a position shallower than the groove depth of the first guide groove 238A, and the position of the second guide plane 244B is at a position shallower than the groove depth of the second guide groove 244A.

As shown in FIG. 30, the drive unit mounting portion 222 of the sensor holder 214 has a first mounting recess 250 recessed in the +Z direction in the central portion, and recesses recessed in the +Z direction on both the +X side and the −X side. A second attachment recess 252 is formed. 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.

The first magnet 256 is divided into two in the Y direction, with an S pole formed on the rear surface of one magnet piece, and an N pole formed on the rear surface of the other magnet piece. The second magnet 260 is each divided into two parts 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.

A driving flexible printed circuit board (hereinafter referred to as driving FPC) 262 is disposed on the front side of the bottom portion 224 of the base 216 . The driving FPC 262 has a rectangular shape large enough to be placed inside the first support part 240 of the bottom part 224, slightly extends outward from the long side end on the -Y side, is bent to the front, and is attached to the base. It has a substantially L-shaped input/output section 264 whose direction is changed toward the corner of 216. The input/output section 264 further passes outside the extension section 228 and exits from a slit 290 of the case 232, which will be described later.

On the front side surface of the driving FPC 262, a first coil 266 is fixed at the center, and second coils 268 are fixed on both sides of the +X side and the -X side. The first coil 266 has a straight portion in the X direction and is arranged to face the first magnet 256, and the second coil 268 has a straight part in the Y direction and is arranged to face the second magnet 260. The first coil 266 and the second coil 268 are electrically connected to the outside via the driving FPC 262.

The first coil 266 and the second coil 268 are housed within the through hole 248 of the slider 242. In order for the slider 242 to move in the Y direction, the size of the slider 242 in the Y direction must be increased accordingly, and the size of the image sensor driving device 210 in the Y direction increases, making the electronic device thicker. By moving the slider 242 in the X direction, it is possible to prevent the electronic device from becoming thicker.

A Y-direction position detection sensor 270 is arranged at the center of the first coil 266, and an X-direction position detection sensor 272 is arranged at the center of one of the two second coils 268.

As shown in FIG. 30, a third yoke 276 is fixed to a third mounting recess 274 provided on the rear side 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.

The sensor flexible printed circuit board (hereinafter referred to as sensor FPC) 278 includes a sensor fixing section 280 fixed between the image sensor 212 and the sensor holder 214, two terminal sections 284 connected to the outside, and the sensor fixing section 280. and a terminal portion 284, respectively. The sensor fixing part 280 has a rectangular flat plate shape that is slightly smaller than the outer shape of the sensor holder 214, and the image sensor 212 is fixed to the front side thereof, and the rear side thereof is fixed to the sensor holder 214.

The two connecting portions 282 extend line-symmetrically. The two connecting parts 282 each extend slightly outward from the central part of the long side on the +Y side of the sensor fixing part 280, bend toward the +Z side, and extend along this long side toward the end of this long side. Once it passes the end of this long side, bend it, change direction, and extend it along the short side. The two connecting portions 282 are further bent in a zigzag manner toward the outside in the X direction along the short sides, and exit from the gap portion 230 of the base 216 to the outside of the base 216 . The connecting portion 282 extends along the outer surface of the extending portion 228 and is fixed to this outer surface, exits from a slit 290 of the case 232 to be described later, and forms a terminal portion 284. The image sensor 212 is electrically connected to the outside via a sensor FPC 278.

The image sensor driving device 210 further includes a box-shaped case 232 that is combined with the base 216 to form a housing space. The case 232 includes a rectangular front plate 286 and four side plates 288 extending in the -Z direction from each of the four sides around the rectangular front plate 286, and is fitted onto the outside of the extending portion 228 of the base 216. Further, a slit 290 is formed between each side plate 288, and the terminal portion 284 of the sensor FPC 278 and the input/output portion 264 of the drive FPC 262 are drawn out to the outside through the slit 290. The terminal section 284 and the input/output section 264 outside the device are arranged substantially flush with the side plate 288 and the side wall 226 on the -Y side, and their normal direction is parallel to the short side. Since the side plate 288 and side wall 226 on the -Y side of the image sensor driving device 210 are mounted on the camera device main body, such an arrangement facilitates electrical connection.

A through hole 292 is provided in the center of the front plate 286 and allows incident light to the image sensor 212 to pass therethrough. The distance between the front end of the stopper 220 provided on the sensor holder 214 and the rear side surface of the front plate 286 in the Z direction is less than or equal to the distance between the top of the support protrusion and the surface of the guide groove. That is, the distance is less than or equal to the distance between the top of the first support protrusion 240A and the rear side surface of the slider 242, and the distance is less than or equal to the distance between the top of the second support protrusion 246A and the above-mentioned platform-shaped protrusion. Thereby, the first support protrusion 240A and the second support protrusion 246A do not come off from the first guide groove 238A and the second guide groove 244A, respectively.

In the above configuration, when the second coil 268 is energized, the slider 242 is guided by the first guide mechanism 234 together with the sensor holder 214 and moves in the X direction with respect to the base 216 due to Lorentz force. When the first coil 266 is energized, the sensor holder 214 is guided by the second guide mechanism 236 and moves in the Y direction relative to the slider 242 due to Lorentz force. As a result, the sensor holder 214 on which the image sensor 212 is mounted is driven in the XY direction with respect to the base 216. When the power supply to the first coil 266 and the second coil 268 is stopped, the sensor holder 214 stops at that position.

When the image sensor driving device 210 receives an impact in the Z direction, the first guide section 238 and the first support section 240, and the second guide section 244 and the second support section 246 are separated by a small distance, respectively. Leave and immediately return to the original position. The contact states between the first guide part 238 and the first support part 240 and between the second guide part 244 and the second support part 246 are all line contact. Therefore, the first guide part 238 and the second guide part 244 made of metal are not damaged, and the first support part 240 and the second support part 246 made of resin are elastically deformed and return to their original state, so there is almost no damage.

Further, when the image sensor driving device 210 receives an impact in the X direction or the 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 substantially contact states. So there is almost no damage. There is almost no damage even if the sensor holder 214 receives an impact in any direction, and smooth movement of the sensor holder 214 relative to the base 216 can be ensured.

[Modified example]
In the fourth embodiment, the slider 242 is configured as a single metal member made of 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 a modification described below. In that case, the first guide part is formed on one of the two metal plates, and the second guide part 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. Note that the lens driving device of the modified example is different from the image sensor driving device 210 of the fourth embodiment only in the configuration of the slider 296, and the configuration of other parts is the same. Therefore, the same configurations will be described using the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 38(A) and 38(B), the slider 296 consists of two metal plates: a rear metal plate 298 placed on the -Z side and a front metal plate 2100 placed on the +Z side. The bodies are formed so that they overlap in the Z direction. The rear metal plate 298 and the front metal plate 2100 have a substantially rectangular shape, and a through hole 2102 for receiving the first coil 266 and the second coil 268 is formed in the center portion. Furthermore, 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.

The front metal plate 2100 and the rear metal plate 298 are integrated with each other by a fixing method such as welding, caulking, screwing, or adhesion, except for the first guide part 2104 and the second guide part 2106. Furthermore, the rear metal plate 298 in the first guide section 2104 and the front metal plate 2100 in the second guide section 2106 overlap with each other with a gap provided in the Z direction, as described below.

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. Further, 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. is forming. Further, 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. . Further, 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 plane 2106B is connected to the main body of the front metal plate 2100 only on the +X side.

The rear metal plate 298 in the first guide part 2104 and the front metal plate 2100 in the second guide part 2106 overlap with each other with a gap provided in the Z direction. As a result, when an impact is applied, at least one of the first guide part 2104 and the second guide part 2106 bends and absorbs the impact, thereby supporting the first support part 240 and the second support part 246 made of resin. Damage can be suppressed.

Specifically, the groove depth of the first guide groove 2104A and the groove depth of the second guide groove 2106A are adjusted so that the rear metal plate 298 in the first guide part 2104 and the front metal plate 2100 in the second guide part 2106 do not come into contact with each other. The depth and height of the protrusion in which the second guide part 2106 similar to the second guide part 244 is formed are determined. These dimensions are determined in consideration of dimensional tolerances, as well as dead weight, deflection due to the attractive force of the first magnet 256, second magnet 260, and third yoke 276, deflection during normal use, deflection due to impact, and the like. For other locations, the position of the first guide plane 2104B is at a position shallower than the groove depth of the first guide groove 2104A, and the position of the second guide plane 2106B is at a position shallower than the groove depth of the second guide groove 2106A. Therefore, it is possible to ensure sufficient spacing.

In the modified guide mechanism 218, 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 the slider 296 in the -Z direction. push back. That is, in the first guide mechanism 234, the first support section 240 pushes the first guide section 2104 in the +Z direction, and the first guide section 2104 is elastically deformed in the +Z direction. Further, in the second guide mechanism 236, the second support section 246 pushes the second guide section 2106 in the -Z direction, and the second guide section 2106 is elastically deformed in the -Z direction. Since a gap is provided between the rear metal plate 298 in the first guide part 2104 and the front metal plate 2100 in the second guide part 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 part 2104 and the second guide part 2106 can be sufficiently elastically deformed and can absorb shock. When an impact is applied to the guide mechanism 218 in the X direction or the Y direction in the modified example, the operation is substantially the same as that of the guide mechanism 218 in the fourth embodiment, so a detailed explanation will be omitted.

Note that in the fourth embodiment, the image sensor driving device 210 used in a camera device installed in an electronic device such as a mobile phone or a smart phone has been described, but the present invention is also applicable to other devices.

(Additional note)
(((1)))
It has a guide mechanism that guides the movement of the optical member,
The guide mechanism includes a guide portion including a groove and a sliding plane formed on a first member made of metal, and a support portion formed as a plurality of protrusions on a second member made of resin, Some of the protrusions of the plurality of protrusions made of the metal fit into the groove of the metal, and the remaining protrusions of the plurality of protrusions contact the sliding plane made of the metal. An optical member driving device in which a support portion and the guide portion slide.
(((2)))
having one said first member and two said second members,
The one first member has the guide portions on both sides in the optical axis direction of the optical member, and the extending direction of the groove provided on one side of the guide portion in the optical axis direction and the optical axis The extending direction of the groove provided on the other side of the direction is orthogonal to each other,
The optical member driving device according to ((1))), wherein the two second members sandwich the first member from both sides in the optical axis direction, and have a support on one of them for supporting the optical member. .
(((3)))
The outer shape of the plate-shaped first member is a square shape,
One of the guide portions provided on both sides in the optical axis direction is provided on the surface of a protruding portion that protrudes in a trapezoidal manner in the optical axis direction from the plate surface at the four corners of the square-shaped first member. The optical member driving device according to ((2)), which is formed.
(((4)))
The optical member driving device according to ((3)), wherein the other guide portion is formed on the back surface of the protrusion.
(((5)))
The optical member driving device according to ((1)), wherein the first member is integrally formed.
(((6)))
The first member is formed by two metal plates fixed together, and one of the guide portions provided on both sides in the optical axis direction is formed on one of the two metal plates, The optical member driving device according to ((2)), wherein the other of the guide portions provided on both sides in the optical axis direction is formed on the other of the two metal plates.
(((7)))
The outer shapes of the two metal plates are both rectangular,
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 trapezoidal manner from a plate surface in the optical axis direction at the four corners of one of the metal plates. The optical member driving device according to ((6)).
(((8)))
A camera device comprising the optical member driving device according to ((1)) and a lens as the optical member.
(((9)))
A camera device comprising the optical member driving device according to ((1))) and an image sensor as the optical member.
(((10)))
An electronic device comprising the camera device according to any one of (((8))) and (((9))).
(((11)))
It has a guide mechanism that guides the movement of the optical member,
The guide mechanism includes a guide portion including a groove and a sliding plane formed on the 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 protrusions among the plurality of protrusions fit into the groove, and the remaining protrusions among the plurality of protrusions contact the sliding plane, so that the support part and the guide part slide. An optical member driving device that guides movement of the optical member.
(((12)))
The first member has the guide portions formed at the same positions on the front and back surfaces thereof, respectively;
The optical member driving device according to ((11)), wherein a gap is provided between the two guide portions.
(((13)))
The first member is formed of two metal plates whose plate surfaces overlap, and at least one of the metal plates forms a protrusion that projects in a trapezoid shape with respect to the plate surface at a position where the guide portion is provided. and the two metal plates overlap each other with the gap provided between them,
The optical member driving device described in (((12))).
(((14)))
The two metal plates each have a substantially square shape,
The optical member driving device according to ((13)), wherein the protruding portions are formed at four corners of the substantially rectangular metal plate.
(((15)))
Each of the two substantially rectangular metal plates is provided with the groove at both ends of one of the two opposing sides, and the sliding plane is provided at both ends of the other side, The optical member according to ((14))), wherein the extending direction of the groove formed in one metal plate and the extending direction of the groove formed in the other metal plate are orthogonal to each other. Drive device.
(((16)))
The optical member driving device according to ((3)), wherein the protrusion is formed by bending the metal plate.
(((17)))
The first member is integrally formed,
The optical member driving device according to ((12)), wherein the gap is a slit provided between the two guide portions in parallel to the sliding plane.
(((18)))
The first member is a metal plate, the guide portion extends from the main body of the first member in the inward direction of the plate surface, and the sliding plane is at the same height as the main body of the first member. The optical member driving device according to (((11))).
(((19)))
The optical member driving device according to ((18))), wherein the sliding plane that is at the same height as the main body of the first member is provided on both surfaces of the first member.
(((20)))
The second member has two second members that sandwich the first member from both sides in the optical axis direction of the optical member, and one of the second members is provided with a support for supporting the optical member ((( 12))) or (((19))).
(((21)))
A camera device comprising the optical member driving device according to ((1)) and a lens as the optical member.
(((22)))
A camera device comprising the optical member driving device according to ((11)) and an image sensor as the optical member.
(((23)))
An electronic device comprising the camera device according to any one of (((21))) and (((22))).
(((24)))
A plate-shaped base,
a box-shaped sub-base fixed to a front plate of a box-shaped case fixed to the base;
a lens carrier supported movably in the optical axis direction of the lens inside the sub-base;
a sensor holder that holds an image sensor and is movably supported by an orthogonal direction guide mechanism in two directions perpendicular to the optical axis direction and mutually perpendicular to the base;
a slider disposed between the sensor holder and the base,
The orthogonal direction guide mechanism includes a plurality of metal guide grooves and guide planes formed on the front and rear sides of the slider, and a plurality of resin-made guide grooves and guide planes formed on the rear side of the sensor holder and the front side of the base, respectively. a supporting convex portion, each of the supporting convex portions contacting either the corresponding guide groove or the guide plane.
(((25)))
The sensor holder holds an image sensor fixed to a first flexible printed circuit board,
The first flexible printed circuit board includes a flat plate part that is perpendicular to the optical axis direction and on which the image sensor is mounted, and a flat plate part that extends in the optical axis direction from one side of the flat plate part and surrounds the sensor holder. The optical member driving device according to ((24)), further comprising a band-shaped portion extending toward a side opposite to the flat plate 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 the middle between the outer edge and the inner edge of the bottom plate portion,
The optical member 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)))
A concave portion is provided inward at the outer edge of the bottom plate portion, and the flat plate portion is attached to the rear side surface of the sensor holder and extends from one side of the flat plate portion in the optical axis direction. The optical member driving device according to ((26)), wherein the ejected band-shaped portion passes through the recess.
(((28)))
Convex portions protruding toward the front are provided on three sides of the outer edge of the bottom plate portion, and the rear end of the strip portion is located on the rear side of the front end of the convex portion (((26))). Optical member drive device.
(((29)))
An FPC fixing wall is erected on a side of the base opposite to the outer edge side other than the three sides, and the strip portion is fixed to the outer surface of the FPC fixing wall (((28))). Optical member drive device.
(((30)))
a second flexible printed circuit board is disposed so as to surround the outside of three sides of the sub-base, the sub-base has a side wall that surrounds the outside of the three sides of the lens carrier;
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 first coil and a second coil are arranged on the inner surface of the second flexible printed circuit board at a position where there is no side wall. The optical member driving device according to ((24)), wherein three coils are arranged.
(((31)))
The optical member 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)))
A third magnet is arranged on the lens carrier to face the third coil, a first magnet is arranged on the sensor holder to face the first coil, and a first magnet is arranged on the sensor holder to face the second coil. The optical member driving device according to ((30)), wherein the second magnet is disposed at.
(((33)))
further comprising 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 member driving device according to ((24)), wherein the slider has a recess formed on two adjacent sides of an outer peripheral portion, and the fourth yoke is fixed within the recess.
(((34)))
A camera device comprising the optical member driving device according to ((24))) and a lens fixed to the lens carrier.
(((35)))
An electronic device comprising the camera device according to ((34))).
(((36)))
a sensor holder for fixing an image sensor having a light receiving surface on the front side from the rear side;
a slider arranged on the rear side of the sensor holder;
a base that is a non-movable body disposed on the rear side of the slider,
The sensor holder, the slider, and the base have a rectangular shape with corresponding long sides and short sides, and the sensor holder is movable at the four corners in a direction parallel to the light receiving surface with respect to the base. A guide mechanism for guiding and supporting is formed,
The guide mechanism includes metal guide grooves and guide planes formed on the front side and rear side of the slider, and a plurality of resin supports formed on the rear side of the sensor holder and the front side of the base, respectively. An image sensor driving device comprising: a convex portion, each of the supporting convex portions contacting either the corresponding guide groove or the guide plane.
(((37)))
The image sensor driving device according to ((36)), wherein each of the supporting convex portions contacts either the corresponding guide groove or the guide plane through a line contact.
(((38)))
Furthermore, it is equipped with a flexible printed circuit board for the sensor.
The sensor flexible printed circuit board has a sensor fixing part fixed between the image sensor and the sensor holder, two terminal parts connected to the outside, and connecting the sensor fixing part and the terminal part, respectively. having two connecting parts,
The two connecting portions extend line-symmetrically, and each extends slightly outward from the center of the long side of the rectangular sensor fixing portion, bends toward the front, and changes direction to connect to the end of the long side. The terminal extends along the long side toward the end of the long side, bends after passing the end of the long side, extends along the short side, and then bends outward in a zigzag pattern to reach the terminal section (( (36))) The image sensor driving device described in (36))).
(((39)))
The image sensor driving device according to ((38)), wherein the terminal portion is flush with a long side of the rectangular base, and a normal direction thereof is parallel to the short side.
(((40)))
further comprising 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 the entire outer edge of the bottom, and an extending portion extending further forward from a corner of the side wall,
The case has a slit at a corner,
The connecting portion comes out of the base from a gap between the two extensions provided on the short side of the base, extends along the outside of one of the extensions, and connects to the slit. The image sensor driving device according to ((39)), wherein the image sensor driving device exits from the terminal and reaches the terminal portion.
(((41)))
Further comprising a driving flexible printed circuit board held by the base and a coil held by the driving flexible printed circuit board,
The driving flexible printed circuit board slightly extends outward from the long side end of the rectangle, bends toward the front, changes direction toward the corner of the base, passes through the outside of the extending portion, and exits from the slit. The image sensor driving device according to ((40)), further comprising an input/output section that goes out to the outside together with one of the connection sections.
(((42)))
further comprising a driving magnet fixed to the rear side of the sensor holder and a coil fixed to the front side of the base,
The image sensor drive according to ((36))), wherein the coil has 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, which are arranged in the long side direction. Device.
(((43)))
The image sensor driving device according to ((42)), wherein the slider has a through hole in the center thereof, and the coil is located 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)))
further comprising a case that is combined with the base to form a storage space,
The sensor holder has a stopper that protrudes forward in a columnar shape from a front side thereof,
The image according to ((36))), wherein the distance between the front end of the stopper and the rear surface of the front plate of the case is less than or equal to the distance between the top of the support convex part and the surface of the guide groove. Sensor drive device.
(((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 comprising the camera device according to ((46))).

According to the inventions of the optical member driving device, the camera device, and the electronic device according to (((1))) to (((10))), the first member is formed with a groove and a sliding plane constituting a guide mechanism. is made of metal, and the second member is made of resin and has a protrusion that fits into the groove and a protrusion that contacts the sliding plane. As a result, the coefficient of friction in the guide mechanism is less likely to increase, and the overall structure can be made even thinner.
According to the inventions of the optical member driving device, camera device, and electronic device according to (((11))) to (((23))), the guide mechanism includes a groove formed on the surface of the first metal member. and a guide portion including a sliding plane, and a support portion formed as a protrusion on the second member made of resin, and the guide portion is configured to be connected to the main body of the first member only on one side. ing. Therefore, the coefficient of friction in the guide mechanism is less likely to increase, and the guide portion is elastically deformed even when an impact is applied, so that the guide mechanism is less likely to be damaged.
According to the inventions of the optical member driving device, camera device, and electronic device according to (((24))) to (((35))), metal guide grooves and It has a guide plane and a plurality of support protrusions made of resin formed on the rear side of the sensor holder and the front side of the base, and each support protrusion is connected to either the corresponding guide groove or the guide plane. come into contact with. Therefore, even if an impact is applied, there is no damage to the metal guide grooves and guide planes, and the resin support projections are elastically deformed and return to their original state, so there is almost no damage. Furthermore, the friction coefficient is kept small due to the contact between the metal and the resin. Therefore, it is less likely to be damaged by a fall impact, and smooth movement of the member holding the optical member such as the image sensor can be ensured.
According to the inventions of the image sensor driving device, camera device, and electronic device according to (((36))) to (((47))), the guide mechanism is made of metal formed on the front and rear sides of the slider. and a plurality of support protrusions made of resin formed on the rear side of the sensor holder and the front side of the base, respectively. Each support convex portion contacts either the corresponding guide groove or the guide plane. Therefore, even if an impact is applied, there is no damage to the metal guide grooves and guide planes, and the resin support projections are elastically deformed and return to their original state, so there is almost no damage. Therefore, it is less likely to be damaged even if it is subjected to impact, and smooth movement can be ensured.

10 Lens drive device 12 Fixed body 14 Moving body 16 Lens support body 18 First frame 20 Lens attachment hole 22 First moving body plate 22A Slit 24 Second moving body plate 26 Cover 28, 30, 32 Through hole 34 Orthogonal direction Guide mechanism 36 First guide mechanism 38 Second guide mechanism 42 First guide part 42A First groove 42B First sliding plane 40, 40A, 40B First support part 46 Second guide part 46A Second groove 46B Second sliding Plane 44, 44A, 44B Second support part 48 Mounting part 50 Mounting hole 52 Mounted part 54 First magnet 56 First yoke 58 Second magnet 60 Second yoke 62 Second frame 64 Base 66 Cover 68 Bottom part 70 Front Parts 72, 74 Through holes 76 Support portion 78 Flexible printed circuit board 80 Terminal portion 82 First coil 84 Second coil 86 Magnetic member 88 Optical axis direction 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 First guide part 104A First groove 104B First sliding plane 106 Second guide part 106A Second groove 106B Second sliding plane 110 Optical member driving device 112 Case 114 Sub-base 116 Lens carrier 118 Optical axis direction guide mechanism 120 Base 122 Orthogonal direction guide mechanism 124 Sensor holder 126 First flexible printed circuit board (first FPC)
128 Image sensor 130 Front plate 132 Through hole 134 Side wall 136 Through hole 138 Bottom plate 140 Side wall 142 Opening 144 Through hole 146 Mounting protrusion 148 Mounting hole 150 Fixing hole 152 Guide shaft 154 Guide hole 156 Bottom plate 158 Fixing protrusion 160 FP C fixed wall 162 Through hole 164 Fourth yoke fixing part 166 Fourth yoke 168 Bottom cover 170 Through hole 172 Bottom plate part 172A Recessed part 172B Convex part 174 Side plate part 176 Fourth magnet fixing part 178 Fourth magnet 180 Flat plate part 182 Terminal part 184 Band part 188 1 guide mechanism 190 2nd guide mechanism 192 1st guide part 192A 1st guide groove 192B 1st guide plane 194 1st support part 194A, 194B 1st support convex part 196 Slider 198 2nd guide part 198A 2nd guide groove 198B 2 guide plane 1100 2nd support part 1100A, 1100B 2nd support convex part 1102A Through hole 1102B Recessed part 1104 1st magnet 1106 2nd magnet 1108 1st yoke 1110 2nd yoke 1112 3rd magnet 1114 3rd yoke 1116 2nd flexible print Board (2nd FPC)
1118 First coil 1120 Second coil 1122 Third coil 1124 Fifth yoke 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 side metal plate 1138 Front side metal plate 1140 Through hole 1142 Recess 1144 First guide part 1144A First guide groove 1144B First guide plane 1146 Second guide part 1146A Second guide groove 1146B Second guide plane 210 Image sensor drive device 212 Image sensor 214 Sensor holder 216 Base 218 Guide mechanism 220 Stopper 222 Drive member attachment part 224 Bottom part 226 Side wall 228 Extension part 230 Gap part 232 Case 234 First guide mechanism 236 Second guide mechanism 238 First guide part 238A First guide groove 238B First guide plane 240 First support part 240A, 240B First support convex portion 242 Slider 244 Second guide portion 244A Second guide groove 244B Second guide plane 246 Second support portion 246A, 246B Second support convex portion 248 Through hole 250 First mounting recess 252 Second attachment Recessed portion 254 First yoke 256 First magnet 258 Second yoke 260 Second magnet 262 Flexible printed circuit board for drive (FPC for drive)
264 Input/output section 266 First coil 268 Second coil 270 Y direction position detection sensor 272 X direction position detection sensor 274 Third mounting recess 276 Third yoke 278 Flexible printed circuit board for sensor (FPC for sensor)
280 Sensor fixing part 282 Connection part 284 Terminal part 286 Front plate 288 Side plate 290 Slit 292 Through hole 296 Slider 298 Rear metal plate 2100 Front metal plate 2102 Through hole 2104 First guide part 2104A First guide groove 2104B First guide plane 2106 Second guide part 2106A Second guide groove 2106B Second guide plane

Claims (10)

It has a guide mechanism that guides the movement of the optical member,
The guide mechanism includes a guide portion including a groove and a sliding plane formed on a first member made of metal, and a support portion formed as a plurality of protrusions on a second member made of resin, Some of the protrusions of the plurality of protrusions made of the metal fit into the groove of the metal, and the remaining protrusions of the plurality of protrusions contact the sliding plane made of the metal. An optical member driving device in which a support portion and the guide portion slide. having one said first member and two said second members,
The one first member has the guide portions on both sides in the optical axis direction of the optical member, and the extending direction of the groove provided on one side of the guide portion in the optical axis direction and the optical axis The extending direction of the groove provided on the other side of the direction is orthogonal to each other,
The optical member driving device according to claim 1, wherein the two second members sandwich the first member from both sides in the optical axis direction and have a support on one of them for supporting the optical member. The outer shape of the plate-shaped first member is a square shape,
One of the guide portions provided on both sides in the optical axis direction is provided on the surface of a protruding portion that protrudes in a trapezoidal manner in the optical axis direction from the plate surface at the four corners of the square-shaped first member. The optical member driving device according to claim 2, wherein the optical member driving device is formed. The optical member driving device according to claim 3, wherein the other guide portion is formed on a back surface of the protrusion. The optical member driving device according to claim 1, wherein the first member is integrally formed. The first member is formed by two metal plates fixed together, and one of the guide portions provided on both sides in the optical axis direction is formed on one of the two metal plates, The optical member driving device according to claim 2, wherein the other of the guide portions provided on both sides in the optical axis direction is formed on the other of the two metal plates. The outer shapes of the two metal plates are both rectangular,
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 trapezoidal manner from a plate surface in the optical axis direction at the four corners of one of the metal plates. The optical member driving device according to claim 6. A camera device comprising the optical member driving device according to claim 1 and a lens as the optical member. A camera device comprising the optical member driving device according to claim 1 and an image sensor as the optical member. An electronic device comprising the camera device according to claim 8 or 9.