JP2023096207A - Optical unit with shake correction function - Google Patents

Abstract

To reduce the number of components and a size of a movable body, and prevent magnetic interference with a lens drive mechanism of an optical module.SOLUTION: A movable body 5 of an optical unit 1 with a shake correction function comprises: an optical module 4; and a first metal member 11 and a second metal member 12 fixed to an outer peripheral surface of the optical module 4. The first metal member 11 is magnetic metal, and is fixed to a side face in a -X direction and a side face in a -Y direction of the optical module 4 to be a yoke for a magnet of a drive mechanism 6 for shake correction. The second metal member 12 is formed of non-magnetic metal, and is fixed to a side face in a +X direction and a side face in a +Y direction of the optical module 4. A lens drive mechanism 17 of the optical module 4 is arranged on a side where the second metal member 12 is located with respect to an optical axis L (+X direction). The first metal member 11 and the second metal member 12 are each provided with a first connection mechanism 71 that connects a gimbal frame 70 and the movable body 5 to each other rotatably around a first axis.SELECTED DRAWING: Figure 6

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical unit with a shake correction function that shakes an optical module to correct shake.

Some optical units mounted on mobile terminals or moving objects have a structure in which the movable body on which the optical module is mounted is oscillated or rotated in order to suppress disturbance of the photographed image when the mobile terminal or moving object is moved. Some have a mechanism for correcting shake. Patent Document 1 discloses this type of optical unit with a shake correction function.

The optical unit with a shake correction function disclosed in Patent Document 1 includes a movable body including a camera module (optical module), a fixed body, and rotation axes (X-axis and Y-axis) that intersect the optical axis of the movable body with respect to the fixed body. It has a rocking support mechanism for rotatably supporting the movable body and a rocking magnetic driving mechanism for rocking the movable body. The movable body has a resin holder that holds the camera module. A magnet of the magnetic drive mechanism for oscillation is fixed to the side surface of the holder via a metal yoke. Metal parts (thrust receiving members) for connecting the gimbal frame of the swing support mechanism are fixed at diagonal positions of the holder.

Japanese Patent Application Laid-Open No. 2021-063971

In the movable body of Patent Document 1, a holder, which is a separate part from the exterior case, is arranged outside the exterior case of the camera module. Therefore, the side surface of the movable body has a structure in which the parts are doubled. Since the holder, which is a part on the outer peripheral side, is a resin part, the plate thickness required to ensure strength is large. Also, in the diagonal position of the holder, there is a recess for holding a metal part (thrust receiving member) for connecting the gimbal frame, and on the side where the magnet of the anti-shake drive mechanism is fixed, it functions as a yoke for the magnet. A metal plate is fixed. Therefore, there is a limit to reducing the outer shape of the movable body. Also, metal parts and yokes for connecting the gimbal frame are separate parts from the holder. Therefore, the number of parts is large, and the number of assembling man-hours is large.

In addition, in the movable body of Patent Document 1, the camera module has a lens drive mechanism for adjusting the lens position, and the movable body (lens barrel) holding the lens group can move in the optical axis direction inside the exterior case. is held to Here, the number of parts can be reduced by fixing the magnet of the magnetic drive mechanism for vibration correction directly to the outer case of the camera module, and fixing the metal parts for connecting the gimbal frame at the diagonal position of the outer case. In addition, it may be possible to reduce the outer shape of the movable body. However, in order to provide the function of the yoke, the exterior case must be made of magnetic metal, and in this case, there is a problem of magnetic interference occurring between the exterior case and the magnet of the lens driving mechanism.

In view of these points, it is an object of the present invention to reduce the number of parts of the movable body and reduce the size of the movable body, to reduce the product size of the optical unit with a shake correction function, and to provide a lens drive mechanism provided in the optical module. To suppress magnetic interference with

In order to solve the above-described problems, an optical unit with a shake correction function of the present invention includes a movable body including an optical module, a fixed body, and a movable body that intersects the optical axis of the optical module with respect to the fixed body. a gimbal mechanism that supports the movable body so as to swing about a first axis and supports the movable body so as to swing about a second axis that intersects the optical axis and the first axis; a shake correction driving mechanism for rocking about one axis and about the second axis, wherein the gimbal mechanism is capable of rotating the gimbal frame, the movable body, and the gimbal frame about the first axis. and a second connection mechanism for rotatably connecting the fixed body and the gimbal frame about the second axis, wherein the outer peripheral surface of the optical module is aligned with the optical axis. a first side surface and a third side surface facing each other in a first intersecting direction; and a second side surface and a fourth side surface facing each other in a second direction intersecting the optical axis and intersecting the first direction, The movable body includes a first plate portion fixed to the first side surface, a second plate portion fixed to the second side surface, and a first bending portion connecting the first plate portion and the second plate portion. a first metal member having a portion, a third plate portion fixed to the third side surface, a fourth plate portion fixed to the fourth side surface, and the third plate portion and the fourth plate portion a second metal member having a second bending portion that connects to the first connecting mechanism, wherein the first connecting mechanism includes the first bending portion and the second bending portion that are arranged at diagonal positions in the first axial direction of the movable body; The first metal member is provided at the bent portion and is made of a magnetic metal. is fixed, the optical module includes a moving body having a lens, and a lens driving mechanism for moving the moving body in the optical axis direction, and the second metal member is made of a non-magnetic metal , wherein the lens drive mechanism is arranged on the side where the second metal member is positioned with respect to the optical axis.

According to the present invention, the first connection mechanism of the gimbal mechanism can be configured by the first metal member and the second metal member attached to the outer peripheral surface of the optical module. Also, the first metal member is made of a magnetic metal and functions as a yoke for the magnet of the anti-shake drive mechanism. By doing so, the holder for the resin part is not required, so that the outer shape of the movable body can be reduced. Also, if the metal part for connecting the gimbal frame is directly attached to the diagonal position of the optical module, the metal part needs a mounting allowance, but in the present invention, the yoke and the metal part are integrated. Therefore, the mounting margin can be omitted. The second metal member has the same configuration. Therefore, the diagonal size of the movable body can be reduced. Also, the number of parts can be reduced, and the number of assembling man-hours can be reduced. Furthermore, although the lens drive mechanism is arranged on the side of the optical axis where the second metal member is located, since the second metal member is a non-magnetic metal, there is no magnetic interference between the second metal member and the lens drive mechanism. can be avoided. Also, the side on which the second metal member is positioned is a side different from the side on which the magnet and the first metal member are arranged. Therefore, magnetic interference between the lens drive mechanism and the first metal member can be avoided. Also, magnetic interference between the magnet arranged on the surface of the first metal member and the lens driving mechanism can be avoided.

In the present invention, it is preferable that the optical module includes an exterior case made of non-magnetic metal, and the first metal member and the second metal member are fixed to the exterior case. By making the outer case non-magnetic, it is possible to prevent the magnet of the lens driving mechanism from being attracted to the outer case and the movable body not being able to move. Moreover, by using a metal exterior case, strength can be ensured even if the plate thickness is thin. Therefore, it is possible to reduce the size of the movable body and secure the strength.

In the present invention, the moving body faces an opening provided in the exterior case in the optical axis direction, and the edge of the opening faces the moving body in the optical axis direction. It is preferable to restrict the body from jumping out of the opening. By doing so, it is possible to prevent the moving body from dropping out of the exterior case and the optical module from being damaged when an impact due to a drop or the like is applied.

In the present invention, the outer case includes a fifth side surface and a sixth side surface facing each other in the first axial direction, the fifth side surface connecting the first side surface and the second side surface, and the sixth side surface connecting the first side surface and the second side surface. The first bent portion connects the third side surface and the fourth side surface, and extends from the ends of the first plate portion and the second plate portion on the fifth side side toward one side in the first axial direction. It has a pair of first arm portions and a first connecting plate portion connecting the pair of first arm portions on the outer peripheral side of the fifth side surface, and the second bending portion includes the third plate portion and the A pair of second arm portions extending from the end of the fourth plate portion on the side of the sixth side surface toward the other side in the first axial direction and the pair of second arm portions are connected on an outer peripheral side of the sixth side surface. and a second connecting plate portion, wherein each of the first connecting plate portion and the second connecting plate portion includes a spherical body, a convex curved surface protruding in the first axial direction, and a concave surface in the first axial direction. Any one of the concave curved surfaces is provided, and the first connection mechanism is configured by point contact between the sphere, the convex curved surface, and the concave curved surface and the gimbal frame on the first axis. is preferred. With this configuration, the first connection mechanism can be constructed by inserting the end of the gimbal frame into the gap between the outer case and the metal member, so that the gimbal mechanism can be easily assembled. In addition, since the movable body has a shape in which the diagonal portion is chamfered and the first connection mechanism is provided at the chamfered portion, it is possible to reduce the size of the movable body and the gimbal mechanism in the diagonal direction.

In the present invention, it is preferable that the first metal member and the second metal member have metal member-side positioning holes overlapping case-side positioning holes provided in the outer case. In this way, when the first metal member and the second metal member are fixed to the exterior case by welding or the like, they can be accurately positioned. Therefore, the positional accuracy of the first metal member and the second metal member can be enhanced. In addition, the easiness of assembly when assembling the movable body is enhanced.

In the present invention, it is preferable that the first plate portion and the second plate portion have positioning portions that position the magnets in the optical axis direction. By doing so, the positional accuracy of the magnet can be improved.

In the present invention, the one side in the optical axis direction coincides with the subject side of the optical module, the fixed body includes a base that covers the movable body from the other side in the optical axis direction, and the first metal member It is preferable that at least one of the second metal member and the second metal member has a stopper portion extending to the other side from the end portion of the optical module on the other side in the optical axis direction. By doing so, it is possible to prevent the optical module from colliding with the base when an impact due to dropping or the like is applied.

In the present invention, the flexible printed circuit board pulled out from the movable body and a reinforcing plate fixed to the flexible printed circuit board are provided, and one of the third plate portion and the fourth plate portion extends in the optical axis direction. a cutout portion, a pair of locking plates provided on both sides of the cutout portion in the circumferential direction, and a pressing plate extending from the edge of the cutout portion in the optical axis direction to the outer peripheral side. The reinforcing plate is held in a standing posture in the optical axis direction by engaging the pair of locking plates at both ends extending in the circumferential direction of the notch, and the flexible printed circuit board is preferably extended in the optical axis direction together with the reinforcing plate and then bent outward along the pressing plate. In this way, the flexible printed circuit board can be raised from the position where it is pulled out from the movable body to the position of the holding plate, and after the flexible printed circuit board is raised to an appropriate position, it can be pulled out to the outer peripheral side. In addition, since it is only necessary to lock the reinforcing plate to the locking plate, it is easy to pull out the flexible printed circuit board from an appropriate position.

In the present invention, it is preferable that the position of the pressing plate in the optical axis direction is closer to the swing center of the movable body than the pull-out position at which the flexible printed circuit board is pulled out from the movable body. With this configuration, when the movable body swings, the flexible printed circuit board bends at a position near the swing center. As a result, the spring constant of the flexible printed circuit board can be reduced, so that the swing load of the movable body can be reduced.

According to the present invention, the first connection mechanism of the gimbal mechanism can be configured by the first metal member and the second metal member attached to the outer peripheral surface of the optical module. Also, the first metal member is made of a magnetic metal and functions as a yoke for the magnet of the anti-shake drive mechanism. By doing so, the holder for the resin part is not required, so that the outer shape of the movable body can be reduced. Also, if the metal part for connecting the gimbal frame is directly attached to the diagonal position of the optical module, the metal part needs a mounting allowance, but in the present invention, the yoke and the metal part are integrated. Therefore, the mounting margin can be omitted. The second metal member has the same configuration. Therefore, the diagonal size of the movable body can be reduced. Also, the number of parts can be reduced, and the number of assembling man-hours can be reduced. Furthermore, although the lens drive mechanism is arranged on the side of the optical axis where the second metal member is located, since the second metal member is a non-magnetic metal, there is no magnetic interference between the second metal member and the lens drive mechanism. can be avoided. Also, the first metal member made of magnetic metal is arranged on the side opposite to the lens drive mechanism with respect to the optical axis, and is separated from the lens drive mechanism. Therefore, magnetic interference between the lens drive mechanism and the first metal member can be avoided. Also, magnetic interference between the magnet arranged on the surface of the first metal member and the lens driving mechanism can be avoided.

1 is a perspective view of an optical unit with a shake correction function to which the present invention is applied; FIG. FIG. 2 is an exploded perspective view of the optical unit with a shake correction function in FIG. 1; FIG. 3 is a cross-sectional view of the optical unit with a shake correction function cut along the XY plane; FIG. 3 is a cross-sectional view of the optical unit with a shake correction function cut along the XZ plane; It is a perspective view of a movable body. It is an exploded perspective view of a movable body. 4 is a plan view of the exterior case, first metal member, and second metal member; FIG. 3 is an exploded perspective view of an exterior case, first metal member, and second metal member; FIG.

An embodiment of an optical unit with a shake correction function to which the present invention is applied will be described below with reference to the drawings.

(overall structure)
FIG. 1 is a perspective view of an optical unit 1 with a shake correction function to which the present invention is applied. FIG. 2 is an exploded perspective view of the optical unit 1 with a shake correction function in FIG. FIG. 3 is a cross-sectional view of the optical unit 1 with a shake correction function cut along the XY plane, and is a cross-sectional view cut along the height of the swing center P of the movable body 5 . FIG. 4 is a cross-sectional view of the optical unit 1 with a shake correction function cut along the XZ plane, and is a cross-sectional view cut at the position of the optical axis L. As shown in FIG.

An optical unit 1 with a shake correction function has an optical module 4 having a substrate 3 on which a lens 2 and an imaging device are mounted. The optical unit 1 with a shake correction function is used, for example, in optical equipment such as camera-equipped mobile phones and drive recorders, and in optical equipment such as action cameras and wearable cameras mounted on mobile objects such as helmets, bicycles, and radio-controlled helicopters. . In such an optical device, if the optical device shakes during shooting, the captured image is disturbed. The optical unit 1 with a shake correction function corrects the inclination of the optical module 4 based on the acceleration, angular velocity, amount of shake, etc. detected by a detection means such as a gyroscope, in order to avoid inclination of the photographed image.

The optical unit 1 with a shake correction function rotates the optical module 4 around a first axis R1 (see FIGS. 2 and 3) orthogonal to the optical axis L of the lens 2 provided in the optical module 4, and rotates the optical axis L and the first axis R1. Shake correction is performed by rotating the optical module 4 around a second axis R2 perpendicular to the first axis R1. The optical unit 1 with a shake correction function of this embodiment performs pitching correction and yawing correction.

In the following description, three mutually orthogonal axes are the X-axis, the Y-axis, and the Z-axis. The Z axis coincides with the optical axis L. Assuming that the plane including the X axis and the Y axis is the XY plane, the first axis R1 and the second axis R2 are positioned on the XY plane. The first axis R1 and the second axis R2 are inclined 45 degrees with respect to the X-axis and the Y-axis.

In the following description, directions along the X-axis, Y-axis, and Z-axis are defined as X-axis direction, Y-axis direction, and Z-axis direction. One side of the X-axis direction is the -X direction, the other side is the +X direction, one side of the Y-axis direction is the -Y direction, the other side is the +Y direction, one side of the Z-axis direction is the -Z direction, and the other side is the +Y direction. +Z direction. The X-axis direction is the first direction and the Y-axis direction is the second direction. The Z-axis direction is the optical axis direction along the optical axis L. As shown in FIG. The +Z direction is one side of the optical axis direction and is the object side of the optical module 4 . The −Z direction is the other side of the optical axis direction and is the image side of the optical module 4 . A direction along the first axis R1 is defined as a first axial direction, and a direction along the second axis R2 is defined as a second axial direction.

As shown in FIGS. 1 to 4, the optical unit 1 with a shake correction function includes a movable body 5 having an optical module 4, a gimbal mechanism 7, and a fixed body 8 supporting the movable body 5 via the gimbal mechanism 7. , a shake correction driving mechanism 6 for rocking the movable body 5, and flexible printed circuit boards 9 and 10. As shown in FIG. A flexible printed circuit board 9 is connected to the movable body 5 . A flexible printed circuit board 10 for supplying power to the shake correction drive mechanism 6 is fixed to the fixed body 8 .

The gimbal mechanism 7 is a rocking support mechanism that rockably supports the movable body 5 about the first axis R1 and the second axis R2. The movable body 5 can rotate in the pitch direction around the X-axis and in the yaw direction around the Y-axis by synthesizing the rotation around the first axis R1 and the rotation around the second axis R2.

The shake correction drive mechanism 6 includes a first shake correction drive mechanism 6X that generates a driving force around the X-axis for the movable body 5, and a second drive mechanism 6X that generates a drive force for the movable body 5 around the Y-axis. A drive mechanism 6Y for shake correction is provided. As shown in FIG. 4, in this embodiment, the first shake correction drive mechanism 6X is arranged in the -Y direction of the movable body 5. As shown in FIG. The second vibration correction drive mechanism 6Y is arranged in the -X direction of the movable body 5. As shown in FIG.

(movable body)
As shown in FIG. 2 , the movable body 5 includes an optical module 4 and a first metal member 11 and a second metal member 12 fixed to the outer peripheral surface of the optical module 4 . The optical module 4 includes an exterior case 13 to which the first metal member 11 and the second metal member 12 are fixed, and a lens barrel 14 projecting in the +Z direction from an opening 13a provided in the exterior case 13. A lens 2 is held in the cylinder 14 . The substrate 3 is arranged at the end of the optical module 4 in the -Z direction. The flexible printed circuit board 9 is connected to the board 3 on which the imaging device is mounted, and is pulled out in the +X direction from the end of the optical module 4 in the -Z direction.

As shown in FIG. 3, a first magnet 61X is arranged on the side surface of the movable body 5 in the -Y direction. A second magnet 61Y is arranged on the side surface of the movable body 5 in the -X direction. The first magnet 61X and the second magnet 61Y are polarized in the Z-axis direction. The first magnet 61X and the second magnet 61Y are fixed to the side surface of the exterior case 13 with the first metal member 11 interposed therebetween. The exterior case 13 is made of non-magnetic metal, and the first metal member 11 is made of magnetic metal. Therefore, the first metal member 11 functions as a yoke for the first magnet 61X and the second magnet 61Y. On the other hand, the second metal member 12 is made of non-magnetic metal.

(fixed body)
As shown in FIGS. 2 and 4, the fixed body 8 includes a case 20 surrounding the outer periphery of the movable body 5, a base 21 fixed to the case 20 from the -Z direction, and a cover 22 covering the case 20 from the +Z direction. Prepare. Case 20 is made of resin, and base 21 and cover 22 are made of metal. Case 20 is housed between base 21 and cover 22 . As shown in FIGS. 1 and 4, the movable body 5 and part of the gimbal mechanism 7 protrude from the opening 22a of the cover 22 in the +Z direction.

The case 20 includes a frame portion 23 surrounding the movable body 5 and a wire housing portion 24 extending from the frame portion 23 in the +X direction. The frame portion 23 includes a first side wall 25 extending in the +X direction of the movable body 5 in the Y-axis direction. As shown in FIG. 4, the flexible printed circuit board 9 pulled out in the +X direction from the cutout portion 26 provided in the first side wall 25 is accommodated between the base 21 and the wiring accommodating portion 24, and the wiring accommodating portion 24 is pulled out in the -Y direction (see FIG. 1).

As shown in FIG. 3, the first coil 62X is arranged on the side surface of the frame portion 23 in the -Y direction. A second coil 62Y is arranged on the side surface of the frame portion 23 in the -X direction. As shown in FIG. 2 , the first coil 62X and the second coil 62Y are arranged in coil arrangement holes 27 and 28 provided in the frame portion 23 . The first coil 62X and the second coil 62Y are oval air-core coils elongated in the circumferential direction. The first coil 62X and the second coil 62Y are electrically connected to the flexible printed circuit board 10. As shown in FIG. The flexible printed circuit board 10 is routed along the −X direction side surface and the −Y direction side surface of the frame portion 23 .

(Gimbal mechanism)
As shown in FIGS. 2 and 3 , the gimbal mechanism 7 includes a gimbal frame 70 , a first connection mechanism 71 and a second connection mechanism 72 . The first connection mechanism 71 connects the gimbal frame 70 and the movable body 5 rotatably about the first axis R<b>1 at diagonal positions of the movable body 5 in the first axial direction. The second connection mechanism 72 connects the gimbal frame 70 and the case 20 rotatably about the second axis R<b>2 at diagonal positions of the frame portion 23 of the fixed body 8 in the second axial direction. When the gimbal mechanism 7 is configured, the movable body 5 swings around the swing center P (see FIGS. 3 and 4), which is the intersection point where the optical axis L, the first axis R1, and the second axis R2 intersect. becomes movable.

The gimbal frame 70 is made of a metal leaf spring. As shown in FIG. 2, the gimbal frame 70 includes a gimbal frame body portion 74 having an opening 73 in which the lens barrel 14 of the optical module 4 is arranged, and a gimbal frame body portion 74 extending toward both sides in the first axis direction. A pair of first extension portions 75 protruding from the gimbal frame main body portion 74 and extending in the -Z direction, and a pair of second extension portions 76 protruding from the gimbal frame body portion 74 toward both sides in the second axial direction and extending in the -Z direction. Prepare.

The first connection mechanism 71 is composed of a pair of contact points 77 provided at diagonal portions of the movable body 5 in the first axial direction and a pair of first extensions 75 provided on the gimbal frame 70 . As will be described later, in the first connection mechanism 71 , one of the pair of contact portions 77 is provided on the first metal member 11 and the other of the pair of contact portions 77 is provided on the second metal member 12 . Each contact portion 77 has a metallic sphere 79 (see FIG. 3). On the other hand, the distal end of each first extension portion 75 is provided with a concave curved surface that is concave inward in the radial direction. The first extending portion 75 is inserted into the gap between the first metal member 11 and the outer peripheral surface of the optical module 4 and the gap between the second metal member 12 and the outer peripheral surface of the optical module 4, respectively, to extend the first axis R1. The first connection mechanism 71 is configured by bringing the concave curved surface and the sphere 79 into point contact on the top.

The second connection mechanism 72 is composed of a pair of gimbal frame receiving members 29 fixed to diagonal portions of the frame portion 23 in the second axial direction, and a pair of second extension portions 76 provided on the gimbal frame 70 . be. Each gimbal frame receiving member 29 comprises a sphere 30 . On the other hand, each of the second extending portions 76 has a concave curved surface that is concave radially inward. By inserting the second extending portion 76 into the gap between each gimbal frame receiving member 29 and the case 20 and bringing the convex curved surface (the surface of the sphere 30) into point contact with the concave curved surface on the second axis R2, the second A connection mechanism 72 is constructed.

(driving mechanism for shake correction)
When the gimbal mechanism 7 is configured, the first magnet 61X fixed to the side surface of the movable body 5 in the -Y direction and the first coil 62X fixed to the case 20 face each other in the Y-axis direction, and the first shake correction is performed. 6X for driving mechanism (see FIG. 3). Therefore, the power supply to the first coil 62X causes the movable body 5 to rotate around the X axis. A second magnet 61Y fixed to the side surface of the movable body 5 in the -X direction and a second coil 62Y fixed to the case 20 are opposed to each other in the X-axis direction to form a second shake correction driving mechanism 6Y. (See Figure 3). Therefore, the power supply to the second coil 62Y causes the movable body 5 to rotate around the Y axis. The shake correction drive mechanism 6 combines the rotation of the movable body 5 about the X-axis by the first shake correction drive mechanism 6X and the rotation of the movable body 5 about the Y-axis by the second shake correction drive mechanism 6Y. to rotate the movable body 5 around the first axis R1 and around the second axis R2.

(optical module)
FIG. 5 is a perspective view of the movable body 5. FIG. 6 is an exploded perspective view of the movable body 5. FIG. 7 is a plan view of the exterior case 13, the first metal member 11, and the second metal member 12. FIG. 8 is an exploded perspective view of the exterior case 13, the first metal member 11, and the second metal member 12. FIG. As shown in FIGS. 4 and 6, the optical module 4 includes an exterior case 13, a support 15 fixed inside the exterior case 13, a moving body 16 having a lens 2 and a lens barrel 14, and a moving body 16. with respect to the support 15 in the optical axis direction. The substrate 3 is arranged at the end of the support 15 in the -Z direction.

The exterior case 13 includes a body portion 18 surrounding the outer peripheral side of the support 15 and an end plate portion 19 extending from the end of the body portion 18 in the +Z direction toward the inner peripheral side. An opening 13 a is provided in the center of the end plate portion 19 . As shown in FIGS. 4 and 5, the inner peripheral edge of the opening 13a faces the outer peripheral portion of the moving body 16 in the optical axis direction. Therefore, the end plate portion 19 functions as a position restricting portion that restricts the moving body 16 from jumping out in the +Z direction from the opening portion 13a.

The lens driving mechanism 17 is a magnetic driving mechanism. As shown in FIGS. 4 and 6 , the lens drive mechanism 17 includes magnets 171 arranged on the moving body 16 and coils 172 arranged on the support 15 . A substrate 173 connected to the coil 172 is arranged on the side surface of the support 15 in the +X direction. A yoke 174 is superimposed on the magnet 171 on the side opposite to the coil 172 . The magnet 171 and the coil 172 extend in the Y-axis direction and face each other in the X-axis direction. The magnet 171 is polarized in the Z-axis direction. In this embodiment, the exterior case 13 of the optical module 4 is made of non-magnetic metal as described above. Therefore, it is possible to prevent the magnet 171 of the lens driving mechanism 17 from being attracted to the exterior case 13 .

The lens drive mechanism 17 is arranged in the +X direction with respect to the optical axis L of the optical module 4 . On the other hand, the vibration correction driving mechanism 6 is arranged on the -X direction side surface and the -Y direction side surface of the movable body 5, and is arranged in the -X direction and the Y direction with respect to the optical axis L. FIG. Therefore, the lens drive mechanism 17 and the shake correction drive mechanism 6 are arranged on different sides with respect to the optical axis L. FIG.

As shown in FIG. 5, the optical module 4 is octagonal when viewed from the Z-axis direction, with the diagonal portions in the first and second axial directions being chamfered. The outer peripheral surface of the optical module 4 includes a first side surface 41 and a third side surface 43 facing in the X-axis direction (first direction), and a second side surface 42 and a fourth side surface 44 facing in the Y-axis direction (second direction). Prepare. The first side face 41 faces the -X direction, the second side face faces the -Y direction, the third side face 43 faces the +X direction, and the fourth side face faces the +Y direction. The outer peripheral surface of the optical module 4 has a fifth side surface 45 and a sixth side surface 46 facing each other in the first axial direction, and a seventh side surface 47 and an eighth side surface 48 facing each other in the second axial direction. A fifth side surface 45 is located between the first side surface 41 and the second side surface 42 . A sixth side 46 is located between the third side 43 and the fourth side 44 .

(Metal member)
As shown in FIGS. 5, 6, 7, and 8, the first metal member 11 is arranged on the outer peripheral sides of the first side surface 41, the fifth side surface 45, and the second side surface 42 of the optical module 4. As shown in FIGS. The first metal member 11 includes a first plate portion 31 fixed to the first side surface 41, a second plate portion 32 fixed to the second side surface 42, and the first plate portion 31 and the second plate portion 32. A connecting first bend 33 is provided. The first bent portion 33 is bent at a diagonal position on one side of the movable body 5 in the first axial direction so as to protrude radially outward.

The first bent portion 33 is a pair of first arms extending substantially parallel to one side in the first axial direction radially outward from the ends of the first plate portion 31 and the second plate portion 32 on the side of the fifth side surface 45 . It has portions 34 and 35 and a first connecting plate portion 36 that connects the tips of the pair of first arm portions 34 and 35 . The first connecting plate portion 36 extends linearly in the second axial direction and is separated from the fifth side surface 45 .

In the first metal member 11, the first plate portion 31 functions as a yoke for the first magnet 61X, and the second plate portion 32 functions as a yoke for the second magnet 61Y. The −Z direction ends of the first plate portion 31 and the second plate portion 32 are positioning portions that position the magnets (the first magnet 61X and the second magnet 61Y) of the drive mechanism 6 for shake correction in the optical axis direction. 37. The positioning portion 37 is a bent portion obtained by bending the central portion of the end portion in the -Z direction of the first plate portion 31 and the second plate portion 32 to the outer peripheral side. Further, the first plate portion 31 and the second plate portion 32 each include a positioning portion 38 that positions the magnets (the first magnet 61X and the second magnet 61Y) of the shake correction drive mechanism 6 in the circumferential direction. The positioning portion 38 of the first plate portion 31 is a bent portion obtained by bending the +Y-direction end portion of the first plate portion 31 toward the outer circumference. The positioning portion 38 of the second plate portion 32 is a bent portion formed by bending the +X direction end portion of the second plate portion 32 to the outer peripheral side.

The first side surface 41 and the second side surface 42 on which the first metal member 11 is arranged are the -X direction and -Y direction side surfaces of the optical module 4, and are on the opposite side of the optical axis L with respect to the lens driving mechanism 17. It is an aspect of That is, the first metal member 11 made of magnetic metal is attached to the side surface farther from the lens driving mechanism 17 .

The second metal member 12 is arranged on the outer peripheral side of the third side surface 43 , the sixth side surface 46 and the fourth side surface 44 of the optical module 4 . The second metal member 12 includes a third plate portion 51 fixed to the third side surface 43, a fourth plate portion 52 fixed to the third side surface 43, and the third plate portion 51 and the fourth plate portion 52. A connecting second bend 53 is provided. The second bent portions 53 are bent at diagonal positions in the first axial direction of the movable body 5 so as to protrude radially outward.

The second bent portion 53 is a pair of second arms that extend radially outward from the ends of the third plate portion 51 and the fourth plate portion 52 on the side of the sixth side surface 46 and substantially parallel to the other side in the first axial direction. It has portions 54 and 55 and a second connecting plate portion 56 that connects the tips of the pair of second arm portions 54 and 55 . The second connecting plate portion 56 linearly extends in the second axial direction and is separated from the sixth side surface 46 .

The third plate portion 51 of the second metal member 12 is arranged on the third side surface 43 from which the flexible printed circuit board 9 is pulled out. The third plate portion 51 includes a notch portion 57 obtained by notching the central portion in the Y-axis direction in the +Z direction, and a pair of locking portions arranged on both sides of the notch portion 57 in the circumferential direction (both sides in the Y-axis direction). A plate 58 and a holding plate 59 extending in the +X direction from the +Z direction edge of the notch 57 are provided. The pair of locking plates 58 are positioned in the +X direction of the third plate portion 51 and connected to the third plate portion 51 via connection portions 60 extending in the +X direction from both ends of the third plate portion 51 in the Y-axis direction. Connected. By bending the extending portions extending from the third plate portion 51 to both sides in the Y-axis direction in the +X direction and then folding back toward the center in the Y-axis direction of the third plate portion 51, the third plate portion 51 and the X-axis A pair of locking plates 58 are arranged at positions facing each other in the direction.

The first connection plate portion 36 of the first metal member 11 and the second connection plate portion 56 of the second metal member 12 are connected to the contact portion 77 of the first connection mechanism 71 that connects the gimbal mechanism 7 and the movable body 5 . is provided. In this embodiment, a metallic sphere 79 is welded to a hole 78 provided on the first axis R1 in the first connecting plate portion 36 and the second connecting plate portion 56 . Thereby, the contact portion 77 is configured. In the contact portion 77, the outer peripheral surface of the spherical body 79 constitutes a convex curved surface facing radially inward.

The first metal member 11 and the second metal member 12 are fixed to the exterior case 13 by welding. The first metal member 11 and the second metal member 12 each have a metal member-side positioning hole 82 that overlaps with the case-side positioning hole 81 provided in the exterior case 13 . One case-side positioning hole 81 is provided at each of the -Z direction ends of each of the first side surface 41, the second side surface 42, the third side surface 43, and the fourth side surface 44. As shown in FIG. In the first metal member 11 , each of the first plate portion 31 and the second plate portion 32 is provided with one metal member-side positioning hole 82 that overlaps with the case-side positioning hole 81 . Also, in the second metal member 12 , the third plate portion 51 and the fourth plate portion 52 are each provided with one metal member-side positioning hole 82 that overlaps with the case-side positioning hole 81 .

Through holes 83 are provided in the first plate portion 31 , the second plate portion 32 , and the fourth plate portion 52 , one on each side in the circumferential direction of the metal member-side positioning hole 82 . The +Z direction edge and the edge of the through hole 83 of the first metal member 11 are welded to the outer peripheral surface of the exterior case 13 . The edge of the second metal member 12 in the +Z direction and the edge of the through hole 83 are welded to the outer peripheral surface of the exterior case 13 , and the edge of the notch 57 for pulling out the flexible printed circuit board 9 is welded to the exterior case 13 . is welded to the outer peripheral surface of the

A stopper portion 84 extending in the -Z direction is provided at the edge in the -Z direction of the first metal member 11 and the second metal member 12 . In the first metal member 11, the stopper portions 84 are provided on both sides of the positioning portion 37 provided at the −Z direction end of the first plate portion 31 and at the −Z direction end of the second plate portion 32. It is provided at four locations on both sides of the positioning portion 37 provided. In addition, in the second metal member 12, the stopper portion 84 is provided at both ends of the -Z direction end of the third plate portion 51 in the Y-axis direction and at the end of the -Z direction of the fourth plate portion 52 along the X-axis. It is provided at four locations on both ends of the direction. The stopper portion 84 extends to a position in the -Z direction from the substrate 3 arranged at the end in the -Z direction of the optical module 4, and faces the base 21 covering the optical module 4 from the -Z direction.

(flexible printed circuit board)
As shown in FIGS. 2 and 4, the flexible printed circuit board 9 has a drawer portion 91 drawn out from the bottom of the movable body 5 in the +X direction, a rising portion 92 rising from the drawing portion 91 in the +Z direction, and a rising portion 92 extending in the +X direction. It has an extending flat portion 93 and a connection portion 94 extending from the flat portion 93 in the -Y direction and drawn out of the fixed body 8 . The connecting portion 94 is connected to the main body of an optical device in which the optical unit 1 with a shake correction function is mounted.

A reinforcing plate 90 extending in the Y-axis direction is fixed to the raised portion 92 of the flexible printed circuit board 9 . Both ends of the reinforcing plate 90 in the Y-axis direction extend to both sides in the circumferential direction of the notch portion 57 provided in the third plate portion 51 arranged on the third side surface 43 of the optical module 4 . As shown in FIG. 5, when both ends of the reinforcing plate 90 in the Y-axis direction are inserted between the pair of locking plates 58 provided on the second metal member 12 and the third plate portion 51, the reinforcing plate 90 is bent in the +Z direction. The reinforcing plate 90 is pressed against the locking plate 58 by the restoring force that causes the flexible printed circuit board 9 to return to its original shape. Thereby, the reinforcing plate 90 and the rising portion 92 are held in a posture extending in the optical axis direction. Also, the flexible printed circuit board 9 extending in the optical axis direction in the +Z direction of the reinforcing plate 90 hits the pressing plate 59 and is bent in the +X direction. Thereby, the flat portion 93 is positioned at the height of the pressing plate 59 .

The rising portion 92 of the flexible printed circuit board 9 has a wider width in the Y-axis direction than the reinforcing plate 90 . The reinforcing plate 90 is made of a conductive metal, and is fixed to the raised portion 92 by soldering both ends in the Y-axis direction to the surface of the raised portion 92 . By soldering the reinforcing plate 90 to the rising portion 92, the GND wiring provided on the flexible printed circuit board 9 and the reinforcing plate 90 are electrically connected. As described above, since the reinforcing plate 90 is pressed against the locking plate 58 of the second metal member 12, the second metal member 12 and the GND wiring of the flexible printed circuit board 9 are electrically connected through the reinforcing plate 90. be. Therefore, the flexible printed circuit board 9 is grounded via the second metal member 12 and the reinforcing plate 90 .

In this embodiment, the flexible printed circuit board 9 has a three-layered structure consisting of a first layer 901, a second layer 902, and a third layer 903 (see FIG. 4). . Note that the number of layers in the laminated structure is not limited to three. Each of the first layer 901, the second layer 902, and the third layer 903 is a double-sided board in which wiring is formed on both sides, but the wiring may be formed only on one side. Each layer also has non-bonded areas that are not bonded to other layers. For example, the flat portion 93 is a non-bonded area.

The flexible printed circuit board 9 includes a fixed portion 95 that is fixed to the fixed body 8 . In this embodiment, a fixed portion 95 is provided between the flat portion 93 and the connecting portion 94 . The fixed portion 95 is made of, for example, a rigid substrate. The flexible printed circuit board 9 is fixed to the fixed body 8 by fixing the fixed portion 95 to the wiring housing portion 24 .

As shown in FIG. 4, the flat portion 93 is positioned on a virtual plane V passing through the swing center P of the movable body 5 and perpendicular to the optical axis L by a holding plate 59 provided on the second metal member 12. be done. As shown in FIG. 2 , the planar portion 93 includes an in-plane curved portion 96 that curves within the virtual plane V. As shown in FIG. The in-plane curved portion 96 is reversely folded once in the Y-axis direction.

(Main actions and effects of this embodiment)
As described above, the optical unit 1 with a shake correction function of this embodiment includes the movable body 5 including the optical module 4, the fixed body 8, and the movable body 5 with respect to the fixed body 8 as the optical axis L of the optical module 4. a gimbal mechanism 7 supporting a movable body 5 swingably about a first axis R1 that intersects with the optical axis L and a second axis R2 that intersects the first axis R1, and a movable body; 5 around the first axis R1 and around the second axis R2. The gimbal mechanism 7 includes a gimbal frame 70, a first connection mechanism 71 that rotatably connects the movable body 5 and the gimbal frame 70 about a first axis R1, and a fixed body 8 and the gimbal frame 70 that are connected to each other by a second axis R2. A second connection mechanism 72 is provided for rotatable connection. The outer peripheral surface of the optical module 4 faces a first side surface 41 and a third side surface 43 that face each other in a first direction that intersects the optical axis L, and a second direction that intersects the optical axis L and intersects the first direction. It has a second side 42 and a fourth side 44 . The movable body 5 connects the first plate portion 31 fixed to the first side surface 41, the second plate portion 32 fixed to the second side surface 42, and the first plate portion 31 and the second plate portion 32. It has a first metal member 11 with a first bend 33 . In addition, the movable body 5 includes a third plate portion 51 fixed to the third side surface 43, a fourth plate portion 52 fixed to the fourth side surface 44, and the third plate portion 51 and the fourth plate portion 52. It has a second metal member 12 with a connecting second bend 53 . The first connection mechanism 71 is connected to the movable body 5
provided at the first bent portion 33 and the second bent portion 53 which are arranged at diagonal positions in the first axial direction. The first metal member 11 is made of a magnetic metal, a first magnet 61X is fixed to the first side surface 41 via the first plate portion 31, and a magnet 61X is fixed to the second side surface 42 via the second plate portion 32. The second magnet 61Y is fixed. The optical module 4 includes a moving body 16 having the lens 2 and a lens driving mechanism 17 that moves the moving body 16 in the optical axis direction. The second metal member 12 is made of non-magnetic metal, and the lens drive mechanism 17 is arranged on the side of the optical axis L where the second metal member 12 is located (+X direction).

In this embodiment, as described above, the first connection mechanism 71 of the gimbal mechanism 7 can be configured by the first metal member 11 and the second metal member 12 attached to the outer peripheral surface of the optical module 4 . Also, the first metal member 11 is made of a magnetic metal and functions as a yoke for the first magnet 61X or the second magnet 61Y of the drive mechanism 6 for shake correction. Therefore, since a conventional holder for resin parts is not required, the outer shape of the movable body 5 can be reduced. In addition, when the metal parts for connecting the gimbal frame 70 are directly attached to the diagonal positions of the optical module 4, the metal parts are mounted so that they are in contact with the diagonal side surfaces (the fifth side surface 45 and the sixth side surface 46). Although a margin is required, since the yoke and the metal part are integrated in this embodiment, the mounting margin can be omitted. The second metal member 12 also has the same configuration. Therefore, the diagonal size of the movable body 5 can be reduced. Also, the number of parts can be reduced, and the number of assembling man-hours can be reduced.

Furthermore, in this embodiment, the lens drive mechanism 17 is arranged in the +X direction with respect to the optical axis L, and is arranged on the side where the second metal member 12 is located, but the second metal member 12 is a non-magnetic metal. Therefore, magnetic interference with the lens drive mechanism 17 can be avoided. Therefore, it is possible to prevent the magnet 171 of the lens drive mechanism 17 from being attracted to the second metal member 12 and the moving body 16 to be unable to move. In addition, the +X direction is a side different from the side (−X direction, −Y direction) where the first metal member 11 is arranged. Therefore, since the lens drive mechanism 17 and the first metal member 11 are separated from each other, magnetic interference between the lens drive mechanism 17 and the first metal member 11 can be avoided. Also, magnetic interference between the magnets (the first magnet 61X and the second magnet 61Y) fixed to the first metal member 11 and the lens driving mechanism 17 can be avoided. Note that the lens drive mechanism 17 may be arranged in the +Y direction with respect to the optical axis L, or may be arranged in the middle direction between the +X direction and the +Y direction.

The optical module 4 of this embodiment includes an exterior case 13 made of non-magnetic metal, and the first metal member 11 and the second metal member 12 are fixed to the exterior case 13 . By making the outer case 13 non-magnetic, it is possible to prevent the magnet 171 of the lens drive mechanism 17 from being attracted to the outer case 13 and the movable body 16 not being able to move. Further, by using the metallic exterior case 13, strength can be ensured even if the plate thickness is thin. Therefore, it is possible to reduce the size of the movable body 5 and secure the strength.

The optical module 4 of this embodiment has an autofocus mechanism, and moves a movable body 16 having the lens 2 in the optical axis direction. The moving body 16 faces an opening 13a provided in the exterior case 13 in the optical axis direction, and the edge of the opening 13a faces the moving body 16 in the optical axis direction. It functions as a position restricting portion that restricts jumping out of the portion 13a. Therefore, it is possible to prevent the moving body 16 from jumping out of the exterior case 13 and breaking the optical module 4 when an impact such as a drop is applied.

In this embodiment, the exterior case 13 of the optical module 4 has an octagonal shape when viewed from the optical axis direction, and includes a fifth side surface 45 and a sixth side surface 46 facing each other in the first axis direction. A fifth side surface 45 connects the first side surface 41 and the second side surface 42 , and a sixth side surface 46 connects the third side surface 43 and the fourth side surface 44 . The first bent portion 33 includes a pair of first arm portions 34 and 35 extending from the ends of the first plate portion 31 and the second plate portion 32 on the side of the fifth side surface 45 toward one side in the first axial direction, and the fifth side surface. 45 has a first connecting plate portion 36 that connects the pair of first arm portions 34 and 35 on the outer peripheral side. The second bent portion 53 includes a pair of second arm portions 54 and 55 extending from the ends of the third plate portion 51 and the fourth plate portion 52 on the side of the sixth side surface 46 to the other side in the first axial direction, and the sixth side surface. A second connecting plate portion 56 connecting the pair of second arm portions 54 and 55 is provided on the outer peripheral side of 46 . A spherical body 79 is fixed to each of the first connecting plate portion 36 and the second connecting plate portion 56, and the spherical body 79 and the concave curved surface provided on the first extending portion 75 of the gimbal frame 70 are aligned on the first axis R1. A first connection mechanism 71 is configured by point contact. Therefore, the first connection mechanism 71 can be configured by bending the first extending portion 75 inward and inserting it between the side surface of the exterior case 13 and the metal member, so that the gimbal mechanism 7 can be easily assembled. be. In addition, since the movable body 5 has a shape in which the diagonal portion is chamfered, and the first connection mechanism 71 is provided at the chamfered portion, the sizes of the movable body 5 and the gimbal mechanism 7 in the diagonal direction can be reduced. .

In this embodiment, the contact portion 77 that makes point contact with the concave curved surface of the gimbal frame 70 is formed by welding the ball 79 into the holes of the first connecting plate portion 36 and the second connecting plate portion 56 . The portion 77 may be formed by pressing the first connecting plate portion 36 and the second connecting plate portion 56 to form a convex surface projecting in the first axial direction. Further, in this embodiment, the outer peripheral surface (convex surface) of the sphere 79 provided on the first connecting plate portion 36 and the second connecting plate portion 56 and the concave surface provided on the gimbal frame 70 are in point contact. can be reversed. That is, the concave curved surface provided on the first connecting plate portion 36 and the second connecting plate portion 56, which is concave in the first axial direction, and the convex curved surface provided on the gimbal frame 70, which protrudes in the first axial direction, are brought into point contact. good too. When the gimbal frame 70 is provided with a convex curved surface, a metal ball may be welded to the tip of the first extension portion 75 and the second extension portion 76 .

In this embodiment, the first metal member 11 and the second metal member 12 are provided with metal member-side positioning holes 82 overlapping the case-side positioning holes 81 provided in the outer case 13 . Therefore, when fixing the first metal member 11 and the second metal member 12 to the exterior case 13, the positioning work is easy and accurate. The first plate portion 31 and the second plate portion 32 are each provided with a positioning portion 37 for positioning the magnets (the first magnet 61X and the second magnet 61Y) of the drive mechanism 6 for shake correction in the optical axis direction. ing. Therefore, the positional accuracy of the first magnet 61X or the second magnet 61Y is high.

In this embodiment, the first metal member 11 and the second metal member 12 are provided with stopper portions 84 extending in the -Z direction from the ends of the optical module 4 in the -Z direction. Therefore, when an impact due to dropping or the like is applied, the substrate 3 arranged on the bottom of the optical module 4 can be prevented from colliding with the base 21 covering the movable body 5 from the -Z direction and being damaged.

In this embodiment, the flexible printed circuit board 9 is pulled out from the +X direction side surface (third side surface 43) of the movable body 5, and the third plate portion 51 fixed to the third side surface 43 is cut in the optical axis direction. a pair of locking plates 58 provided on both circumferential sides of the notch 57; and a pressing plate 59 extending from the edge of the notch 57 in the optical axis direction to the outer peripheral side. Therefore, the flexible printed circuit board 9 can be pulled out from the notch portion 57 . Further, if both ends in the Y-axis direction of the reinforcing plate 90 fixed to the flexible printed circuit board 9 are locked by a pair of locking plates 58, the reinforcing plate 90 is held in a standing posture in the optical axis direction. As a result, the flexible printed circuit board 9 extends in the optical axis direction together with the reinforcing plate 90, is bent by the pressing plate 59, and is pulled out in the +X direction. Therefore, the flexible printed circuit board 9 can be lifted up to an appropriate position and pulled out to the outer peripheral side. Further, since the work of locking the reinforcing plate 90 to the locking plate 58 is easy, the work of raising the flexible printed circuit board 9 to an appropriate position and drawing it out is easy. When the flexible printed circuit board 9 is pulled out from the movable body 5 in the +Y direction, the fourth plate portion 52 may be provided with a similar holding structure (notch portion 57, a pair of locking plates 58, and a pressing plate 59). .

In this embodiment, the position of the pressing plate 59 in the optical axis direction coincides with the position of the swing center P of the movable body 5 in the optical axis direction. Therefore, since the flexible printed board 9 can be pulled out from the height of the swing center P, when the flat portion 93 of the flexible printed board 9 bends, it bends on the virtual plane V including the swing center P. Therefore, since the flexible printed circuit board 9 has a small spring constant, the swinging load of the movable body 5 is small. The position of the pressing plate 59 in the optical axis direction may be any position closer to the swing center P of the movable body 5 than the pull-out position at which the flexible printed circuit board 9 is pulled out from the movable body 5 . With this configuration, when the movable body 5 swings, the flexible printed circuit board 9 bends at a position near the swing center P, so that the spring constant is small and the swing load of the movable body 5 is small.

(Other embodiments)
(1) In the above embodiment, the optical module 4 has the lens driving mechanism 17 and has an auto-focus function capable of adjusting the lens position. It can be applied to an optical unit with a shake correction function provided with an optical module that does not have an optical module. In this case, since the lens barrel of the optical module is fixed, there is no need to provide the exterior case with a position restricting portion for preventing the lens barrel from falling off. Therefore, the optical module does not have to be provided with a metallic outer case. If the exterior case is omitted, the size of the movable body can be further reduced.

(2) In the above embodiment, the movable body 5 is oscillated in the pitching direction and the yawing direction to correct vibration about two axes. It can be applied to an optical unit with a shake correction function.

REFERENCE SIGNS LIST 1 optical unit with shake correction function 2 lens 3 substrate 4 optical module 5 movable body 6 shake correction drive mechanism 6X first shake correction drive mechanism 6Y second shake correction Correction drive mechanism 7 Gimbal mechanism 8 Fixed body 9, 10 Flexible printed circuit board 11 First metal member 12 Second metal member 13 Exterior case 13a Opening 14 Mirror Cylinder 15 Support 16 Moving body 17 Lens drive mechanism 18 Body 19 End plate 20 Case 21 Base 22 Cover 22a Opening 23 Frame , 24... Wiring housing part 25... Side wall 26... Notch part 27, 28... Coil arrangement hole 29... Gimbal frame receiving member 30... Sphere 31... First plate part 32... Second plate part 33... First bending portion 34, 35... First arm portion 36... First connecting plate portion 37, 38... Positioning portion 41... First side surface 42... Second side surface 43... Third side surface 44 ... fourth side surface, 45 ... fifth side surface, 46 ... sixth side surface, 47 ... seventh side surface, 48 ... eighth side surface, 51 ... third plate portion, 52 ... fourth plate portion, 53 ... second bending portion, 54, 55... Second arm part 56... Second connecting plate part 57... Notch part 58... Locking plate 59... Holding plate 60... Connection part 61X... First magnet 61Y... Second magnet , 62X... first coil, 62Y... second coil, 70... gimbal frame, 71... first connection mechanism, 72... second connection mechanism, 73... opening, 74... gimbal frame body, 75... first extension Part 76 Second extension 77 Contact point 78 Hole 79 Sphere 81 Case side positioning hole 82 Metal member side positioning hole 83 Through hole 84 Stopper 90 Reinforcement plate 91 Drawer portion 92 Rising portion 93 Planar portion 94 Connection portion 95 Fixed portion 96 In-plane curved portion 171 Magnet 172 Coil 173 Substrate 174 Yoke 901 First layer 902 Second layer 903 Third layer L Optical axis P Swing center of movable body R1 First axis R2 Second axis V Virtual plane

Claims (9)

a movable body comprising an optical module;
a fixed body;
supporting the movable body with respect to the fixed body so as to be swingable around a first axis intersecting the optical axis of the optical module, and a second axis intersecting the optical axis and the first axis; a gimbal mechanism that supports the device so that it can swing around;
a shake correction driving mechanism for rocking the movable body about the first axis and about the second axis;
The gimbal mechanism includes a gimbal frame, a first connection mechanism that connects the movable body and the gimbal frame rotatably about the first axis, and a gimbal frame that connects the fixed body and the gimbal frame about the second axis. a second connection mechanism rotatably connected,
The outer peripheral surface of the optical module includes a first side surface and a third side surface facing each other in a first direction intersecting the optical axis, and a second side surface facing each other in a second direction intersecting the optical axis and intersecting the first direction. a second side and a fourth side;
The movable body is
A first plate portion fixed to the first side surface, a second plate portion fixed to the second side surface, and a first bent portion connecting the first plate portion and the second plate portion. 1 metal member;
A third plate portion fixed to the third side surface, a fourth plate portion fixed to the fourth side surface, and a second bending portion connecting the third plate portion and the fourth plate portion. 2 metal members;
The first connection mechanism is provided at the first bending portion and the second bending portion arranged at diagonal positions of the movable body in the first axial direction,
the first metal member is made of a magnetic metal, magnets of the shake correction driving mechanism are fixed to the first side surface and the second side surface via the first plate portion and the second plate portion;
The optical module includes a moving body having a lens, and a lens driving mechanism for moving the moving body in the optical axis direction,
The optical unit with a shake correction function, wherein the second metal member is made of a non-magnetic metal, and the lens driving mechanism is arranged on a side of the optical axis where the second metal member is located. . The optical module comprises an exterior case made of non-magnetic metal,
2. The optical unit with shake correction function according to claim 1, wherein the first metal member and the second metal member are fixed to the exterior case. the moving body faces an opening provided in the exterior case in the optical axis direction,
3. The optical system with shake correction function according to claim 2, wherein the edge of the opening faces the moving body in the optical axis direction and restricts the moving body from jumping out of the opening. unit. The exterior case includes a fifth side surface and a sixth side surface facing each other in the first axial direction, the fifth side surface connecting the first side surface and the second side surface, and the sixth side surface connecting the third side surface. and the fourth side,
The first bent portion includes a pair of first arm portions extending from ends of the first plate portion and the second plate portion on the fifth side surface side to one side in the first axial direction, and a first connecting plate portion that connects the pair of first arm portions on the outer peripheral side,
The second bent portion includes a pair of second arm portions extending from ends of the third plate portion and the fourth plate portion on the sixth side surface side to the other side in the first axial direction, and a second connecting plate portion that connects the pair of second arm portions on the outer peripheral side,
Each of the first connecting plate portion and the second connecting plate portion is provided with one of a spherical body, a convex curved surface protruding in the direction of the first axis, and a concave curved surface recessed in the direction of the first axis,
4. The first connection mechanism is configured by point contact between the gimbal frame and any one of the spherical body, the convex curved surface, and the concave curved surface on the first axis. An optical unit with a shake correction function described in . 5. The first metal member and the second metal member according to any one of claims 2 to 4, wherein each of the metal member side positioning holes overlaps with a case side positioning hole provided in the exterior case. optical unit with image stabilization function. 6. The optical system with shake correction function according to claim 1, wherein the first plate portion and the second plate portion each include a positioning portion for positioning the magnet in the optical axis direction. unit. one side of the optical axis direction coincides with the subject side of the optical module,
the fixed body includes a base that covers the movable body from the other side in the optical axis direction;
At least one of the first metal member and the second metal member has a stopper portion extending to the other side from an end portion of the optical module on the other side in the optical axis direction. 7. The optical unit with a shake correction function according to any one of 6. A flexible printed circuit board pulled out from the movable body, and a reinforcing plate fixed to the flexible printed circuit board,
One of the third plate portion and the fourth plate portion includes a notch portion notched in the optical axis direction, a pair of locking plates provided on both sides of the notch portion in the circumferential direction, and the notch. a holding plate extending from the edge of the notch in the optical axis direction to the outer peripheral side,
both ends of the reinforcing plate extending to both sides in the circumferential direction of the notch are locked by the pair of locking plates, so that the reinforcing plate is held in a standing posture in the optical axis direction;
8. The deflection according to any one of claims 1 to 7, wherein the flexible printed circuit board extends in the optical axis direction together with the reinforcing plate and is then bent outward along the pressing plate. Optical unit with correction function. 9. The image stabilization function according to claim 8, wherein the position of the pressing plate in the optical axis direction is closer to the swing center of the movable body than the pull-out position at which the flexible printed circuit board is pulled out from the movable body. optical unit with.

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