JP7270474B2 - Optical unit with anti-shake function - Google Patents

Description

The present invention relates to an optical unit with a shake correction function that corrects shake by rotating an imaging module around an optical axis.

Among the optical units mounted on mobile terminals and mobile objects, in order to suppress disturbance of captured images when mobile terminals and mobile objects are moved, the movable body on which the optical module is mounted is rotated around the optical axis. Some rotate about a first axis perpendicular to the axis and about a second axis perpendicular to the optical axis and the first axis. Japanese Patent Application Laid-Open No. 2002-200003 describes this type of optical unit with a shake correction function.

The optical unit with a shake correction function disclosed in Patent Document 1 has a movable body, a fixed body, and a rotation support mechanism that supports the movable body rotatably around a predetermined axis with respect to the fixed body. The movable body includes an optical module including a lens, a support surrounding the optical module, and a gimbal mechanism inside the support that supports the optical module rotatably about the first axis and the second axis. Prepare. Further, the optical unit with a shake correction function includes a rotating magnetic drive mechanism that rotates the optical module in the movable body about the first axis and the second axis, and the optical module that rotates the movable body about the predetermined axis. and a rolling magnetic drive mechanism for rotating around the optical axis.

JP 2015-82072 A

In the optical unit with a shake correction function of Patent Document 1, when the optical module does not rotate around the first axis or around the second axis, the rotation support mechanism rotates the movable body along a predetermined axis (rotation of the movable body). axis) coincides with the optical axis. However, when the optical module rotates around the first axis or around the second axis, the rotation axis of the movable body by the rotation support mechanism and the optical axis of the optical module on the movable body are shifted. Therefore, if the magnetic drive mechanism for rolling is driven to rotate the movable body while the optical module is rotating around the first axis or around the second axis, there is a problem that the optical module does not rotate around the optical axis. .

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an optical unit with a shake correction function that can align the rotation axis of a movable body with the optical axis.

In order to solve the above-described problems, an optical unit with a shake correction function of the present invention includes a movable body having a lens, a rotation support mechanism that supports the movable body so as to be rotatable about the optical axis of the lens, and the a rolling correction magnetic drive mechanism for rotating the movable body around the optical axis, wherein one of the optical axis directions is the first direction and the other is the second direction, the movable body and a movable body protruding part coaxial with the lens and protruding in the second direction from the movable body main body, the lens being accommodated in the movable body protruding part, and the rotation support mechanism comprises a plate roll fixed to the movable body, a plate holder including a facing portion facing the plate roll in the optical axis direction, and a plate holder that holds the plate roll between the plate roll and the facing portion. a rotation mechanism that can rotate about the optical axis with respect to the plate roll, the plate roll includes a plate roll annular portion in which the movable body projecting portion is fitted on the inner peripheral side, and the plate holder includes the facing portion and a plate holder annular portion surrounding the movable body projecting portion.

According to the present invention, the movable body is provided with a movable body protrusion coaxial with the lens. On the other hand, in the rotation support mechanism, the plate roll fixed to the movable body has a plate roll annular portion in which the movable body projecting portion is fitted. Therefore, the plate roll is positioned with respect to the optical axis of the movable body by fitting the plate roll and the movable body projecting portion. Therefore, the optical axis of the movable body can be aligned with the rotation axis of the rotation support mechanism.

In the present invention, the plate roll annular portion includes a plate roll cylindrical portion extending in the optical axis direction from the inner peripheral edge, and the movable body projecting portion is a cylindrical portion extending in the optical axis direction with a constant outer diameter. a portion, said cylindrical portion fitting into said plate roll cylindrical portion. In this way, it is easy to bring the plate roll into a state in which it is fitted in the projecting portion of the movable body.

In the present invention, the plate roll cylindrical portion may be provided with a tapered inner peripheral surface that slopes outward toward the end in the first direction. In this way, it is easy to insert and fit the movable body protruding portion into the plate roll annular portion from the first direction side. Further, when the movable body projecting portion is inserted into the plate roll annular portion, the plate roll annular portion can be accurately positioned with respect to the optical axis.

In the present invention, the center hole of the plate roll cylindrical portion is a large-diameter hole portion having an inner diameter larger than the outer diameter of the cylindrical portion of the movable body projecting portion toward the second direction from the end in the first direction. and a small-diameter hole portion having an inner diameter smaller than that of the large-diameter hole portion in this order, and the cylindrical portion of the movable body protruding portion can be fitted into the small-diameter hole portion. In this way, it is easy to insert and fit the movable body protruding portion into the plate roll annular portion from the first direction side.

In the present invention, a gimbal mechanism rotatably supports the rotation support mechanism about a first axis that intersects with the optical axis and rotatably supports it about a second axis that intersects with the optical axis and the first axis. a fixed body that supports the movable body via the gimbal mechanism and the rotation support mechanism; and a shake correction magnetic drive mechanism that rotates the movable body about the first axis and the second axis. wherein the gimbal mechanism includes a gimbal frame and a first connection mechanism rotatably connecting the plate holder and the gimbal frame, wherein the first connection mechanism extends from the gimbal frame to the first axis. A first support member protruding upward toward the plate holder and a first concave curved surface provided on the plate holder with which the tip of the first support member rotatably contacts can be provided. With this configuration, the rotation support mechanism that supports the movable body rotatably about the optical axis is rotatably supported about the first axis and the second axis intersecting the optical axis by the gimbal mechanism. Therefore, by driving the anti-shake magnetic drive mechanism, the movable body can be rotated around the first axis and around the second axis. Here, the rotation support mechanism rotates integrally with the movable body around the first axis and around the second axis. Therefore, even when the movable body rotates around the first axis or the second axis, the rotation axis of the movable body by the rotation support mechanism and the optical axis of the movable body match. Therefore, when the movable body is rotated about the first axis or the second axis by driving the rolling correction magnetic drive mechanism to rotate the movable body, the movable body rotates about the optical axis.

In the present invention, the gimbal frame includes a gimbal frame body portion positioned in the second direction of the plate holder, and a gimbal frame body portion that protrudes toward both sides in the first axial direction from the gimbal frame body portion and extends in the first direction. a pair of first gimbal frame extensions, wherein the pair of first gimbal frame extensions are located on the outer peripheral side of the plate holder, and the first support member is configured to extend from the pair of first gimbal frames. The gimbal frame main body has an opening penetrating in the optical axis direction, and the movable body projecting portion is inserted into the opening, projecting from each of the extending portions toward the plate holder, and The plate roll annular portion is located between the movable body main body portion and the gimbal frame main body portion in the optical axis direction, and the plate holder annular portion is located between the movable body main body portion and the gimbal frame main body portion in the optical axis direction. A pair of plate holder extensions surrounding the movable body projecting portion between the frame body portion and projecting from the plate holder annular portion toward both sides in the first axial direction and extending in the first direction. and a pair of the plate holder extension portions, each of which is provided with the first concave curved surface. In this way, the gimbal frame main body, the plate roll annular portion, and the plate holder annular portion can be arranged using the dead space formed on the outer peripheral side of the movable body projecting portion of the movable body. Also, the pair of first gimbal frame extensions and the pair of plate holder extensions can be used to configure the first connection mechanism at two locations on the first axis.

In the present invention, the gimbal mechanism includes a second connection mechanism that connects the gimbal frame and the fixed body so as to be rotatable about the second axis, and the gimbal frame is connected from the gimbal frame body portion to the second connection mechanism. a pair of second gimbal frame extensions that protrude on both sides in two axial directions and extend in the first direction, wherein the fixed body is a frame surrounding the movable body, the plate holder, and the gimbal frame from an outer peripheral side; and the second connection mechanism includes a second support member projecting toward the gimbal frame on the second axis from each diagonal portion of the frame in the second axis direction, and a pair of the a second concave curved surface provided on each of the second gimbal frame extensions and with which the tip end of the second support member contacts. With this configuration, the gimbal mechanism facilitates supporting the rotation support mechanism so as to be rotatable about the second axis.

According to the present invention, the movable body is provided with a movable body protrusion coaxial with the lens. On the other hand, in the rotation support mechanism, the plate roll fixed to the movable body has a plate roll annular portion in which the movable body projecting portion is fitted. Therefore, the plate roll is positioned with respect to the optical axis of the movable body by fitting the plate roll and the movable body projecting portion. Therefore, the optical axis of the movable body can be aligned with the rotation axis of the rotation support mechanism.

FIG. 4 is a perspective view of an optical unit with a shake correction function; FIG. 2 is a perspective view of the optical unit with a shake correction function from which the flexible printed circuit board is removed, viewed from a direction different from that of FIG. 1; FIG. 4 is a plan view of the optical unit with a shake correction function with the cover removed, as seen from the optical axis direction; 4 is a cross-sectional view taken along line AA of FIG. 3; FIG. 4 is a cross-sectional view taken along the line BB of FIG. 3; FIG. FIG. 4 is an exploded perspective view of an optical unit with a shake correction function; FIG. 4 is an explanatory diagram of a movable body, a rotation support mechanism, and a gimbal mechanism; FIG. 4 is a cross-sectional view of the movable body, rotation support mechanism, gimbal frame, and first connection mechanism; 3 is an exploded perspective view of the movable body, rotation support mechanism, and gimbal frame; FIG. 4 is an exploded perspective view of the rotation support mechanism; FIG. 4 is an exploded perspective view of the gimbal frame, reinforcing member, and first supporting member; FIG. FIG. 3 is a perspective view of a case and gimbal frame receiving member; 4 is an exploded perspective view of the case and gimbal frame receiving member; FIG. It is explanatory drawing of another example of a plate roll. FIG. 11 is a perspective view of another example of the rotation support mechanism; FIG. 4 is a cross-sectional view of another example of a rotation support mechanism;

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 with a shake correction function. FIG. 2 is a perspective view of the optical unit with a shake correction function from which the flexible printed circuit board is removed, viewed from a direction different from that of FIG. FIG. 3 is a plan view when the optical unit with a shake correction function is viewed from the optical axis direction with the cover removed. 4 is a cross-sectional view taken along line AA of FIG. 3. FIG. 5 is a cross-sectional view taken along the line BB of FIG. 3. FIG. FIG. 6 is an exploded perspective view of an optical unit with a shake correction function. FIG. 7 is an explanatory diagram of the movable body, the rotation support mechanism, and the gimbal mechanism. FIG. 8 is a cross-sectional view of the movable body, rotation support mechanism, and gimbal frame. FIG. 9 is an exploded perspective view of the movable body, rotation support mechanism, gimbal frame, and first connection mechanism.

An optical unit 1 with a shake correction function has an imaging module 4 having a lens 2 and an imaging element 3 . 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 movable body 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 of this example is configured to rotate around an optical axis L, around a first axis R1 orthogonal to the optical axis L, and around a second axis R2 orthogonal to the optical axis L and the first axis R1. 4 is rotated to perform shake correction. Therefore, the optical unit 1 with a shake correction function performs rolling correction, pitching correction, and yawing correction.

In the following description, the three mutually orthogonal axes are the X-axis direction, the Y-axis direction, and the Z-axis direction. One side of the X-axis direction is assumed to be the -X direction, and the other side thereof is assumed to be the +X direction. One side of the Y-axis direction is the -Y direction, and the other side is the +Y direction. One side of the Z-axis direction is the -Z direction ( first direction), and the other side is the +Z direction (second direction). The Z-axis direction is the optical axis direction along the optical axis L of the lens 2 provided in the imaging module 4 . The −Z direction is the image side of the imaging module 4 and the +Z direction is the object side of the imaging module 4 . The direction along the first axis R1 is defined as the direction of the first axis R1, and the direction along the second axis R2 is defined as the direction of the second axis R2. The first axis R1 and the second axis R2 are inclined 45 degrees with respect to the X-axis and the Y-axis around the Z-axis.

As shown in FIG. 1, the optical unit 1 with a shake correction function includes a movable body 5 having an imaging module 4 and a rotation support mechanism 6 that supports the movable body 5 so as to be rotatable about the optical axis L. As shown in FIG. The optical unit 1 with a shake correction function also includes a gimbal mechanism 7 that supports the rotation support mechanism 6 rotatably about the first axis R1 and rotatably about the second axis R2, the gimbal mechanism 7 and and a fixed body 8 that supports the movable body 5 via a rotation support mechanism 6 . Therefore, via the gimbal mechanism 7, the movable body 5 is supported so as to be able to swing about the first axis R1, and is supported so as to be able to swing about the second axis R2. Here, the movable body 5 can swing about the X-axis and the Y-axis by combining rotation about the first axis R1 and rotation about the second axis R2.

As shown in FIG. 2, the optical unit 1 with a shake correcting function has a shake correcting magnetic driving mechanism 10 that rotates the movable body 5 about the first axis R1 and the second axis R2. The magnetic drive mechanism for shake correction 10 includes a first magnetic drive mechanism for shake correction 11 that generates a driving force around the X axis for the movable body 5, and a driving force around the Y axis for the movable body 5. and a second shake correction magnetic drive mechanism 12 . The first shake correction magnetic drive mechanism 11 is arranged in the −Y direction of the movable body 5 . The second anti-shake magnetic drive mechanism 12 is arranged in the −X direction of the movable body 5 . Further, the optical unit 1 with a shake correction function has a rolling correction magnetic drive mechanism 13 that rotates the movable body 5 around the optical axis L, as shown in FIGS. The first shake correction magnetic drive mechanism 11, the second shake correction magnetic drive mechanism 12, and the rolling correction magnetic drive mechanism 13 are arranged in the circumferential direction around the optical axis L. As shown in FIG. When viewed in a direction orthogonal to the optical axis L, the rolling correction magnetic drive mechanism 13 overlaps the shake correction magnetic drive mechanism 10 . In this example, the rolling correction magnetic drive mechanism 13 and the first shake correction magnetic drive mechanism 11 are arranged at positions facing each other with the optical axis L interposed therebetween. Further, as shown in FIG. 1, the optical unit 1 with a shake correction function includes a flexible printed circuit board 15 attached to the fixed body 8. As shown in FIG. Further, the optical unit 1 with a shake correction function includes a flexible printed circuit board (not shown) pulled out from the end portion of the movable body 5 in the first direction.

The optical unit 1 with a shake correction function also includes a frame-shaped cover 9 fixed to the +Z direction end face of the fixed body 8 . The cover 9 is located on the outer peripheral side of the movable body 5 when viewed from the Z-axis direction.

(movable body)
As shown in FIGS. 4, 5, and 8, the movable body 5 includes the imaging module 4 and an imaging module holder 16 surrounding the imaging module 4 from the outer peripheral side. Further, the movable body 5 includes a movable body body portion 17 and a movable body projecting portion 18 that projects from the movable body body portion 17 in the +Z direction. The movable body projecting portion 18 is the lens barrel of the imaging module 4 . The lens 2 is accommodated in the movable body projecting portion 18 . The movable body main body 17 is composed of the image pickup module holder 16 and a portion of the image pickup module 4 located on the inner peripheral side of the image pickup module holder 16 . The imaging device 3 is housed in the movable body main body 17 . The imaging device 3 is arranged in the −Z direction of the lens 2 on the optical axis L of the lens 2 .

As shown in FIG. 3, the shape of the movable body main body 17 when viewed from above is substantially octagonal. That is, as shown in FIG. 9, the movable body main portion 17 has a first side wall 21 and a second side wall 22 extending parallel to the Y direction, and a third side wall 23 and a fourth side wall 24 extending parallel to the X direction. Prepare. The first sidewall 21 is positioned in the −X direction of the second sidewall 22 . The third sidewall 23 is positioned in the -Y direction of the fourth sidewall 24 . In addition, the movable body main portion 17 has a fifth side wall 25 and a sixth side wall 26 positioned diagonally in the direction of the first axis R1, and a seventh side wall 27 and an eighth side wall positioned diagonally in the direction of the second axis R2. 28. The fifth side wall 25 is positioned in the −X direction of the sixth side wall 26 . The seventh sidewall 27 is positioned in the -Y direction of the eighth sidewall 28 .

The movable body projecting portion 18 projects from the central portion of the movable body main body portion 17 . As shown in FIG. 4, the movable body projecting portion 18 includes a cylindrical portion 30 extending in the optical axis direction with a constant outer diameter, and a small-diameter cylinder having a smaller outer diameter than the cylindrical portion 30 in the +Z direction of the cylindrical portion 30. a portion 31; The cylindrical portion 30 and the small-diameter cylindrical portion 31 are connected by an annular surface facing the +Z direction.

As shown in FIG. 9 , a first magnet 35 is fixed to the first side wall 21 of the movable body 5 . The first magnet 35 is divided into two in the Z-axis direction. A second magnet 36 is fixed to the third side wall 23 of the movable body 5 . The second magnet 36 is divided into two in the Z-axis direction. A third magnet 37 is fixed to the fourth side wall 24 of the movable body 5 . The third magnet 37 is divided into two in the circumferential direction.

(rotation support mechanism)
10 is an exploded perspective view of the rotation support mechanism 6. FIG. As shown in FIG. 10 , the rotation support mechanism 6 includes a plate roll 41 fixed to the movable body 5 , a plate holder 42 having a facing portion 55 facing the plate roll 41 in the Z-axis direction, the plate roll 41 and the plate roll 41 facing each other. A rotating mechanism 44 having a plurality of balls 43 that roll while in contact with a portion, and a pressurizing mechanism 45 that urges the plate roll 41 and the plate holder 42 toward each other.

The plate roll 41 is made of metal. The plate roll 41 includes a plate roll annular portion 47 surrounding the optical axis L, and a pair of plate roll extension portions 48 projecting from the plate roll annular portion 47 to both sides in the second axis R2 direction and extending in the first direction. . The plate roll annular portion 47 includes a plate roll annular plate 50 and a cylindrical bent portion (plate roll cylindrical portion) 51 that bends from the inner peripheral edge of the plate roll 41 in the first direction. As shown in FIG. 8, a plate roll annular groove 52 is provided in the radial center of the -Z direction end face of the plate roll annular plate 50 . The bent portion 51 has a tapered inner peripheral surface 51a that slopes outward toward the end in the -Z direction. The cylindrical portion 30 of the movable body protruding portion 18 is inserted into the bent portion 51 from the -Z direction side and fitted into the bent portion 51 .

As shown in FIG. 10, each of the pair of plate roll extending portions 48 is provided with a fixing portion 53 fixed to the movable body 5 at the end portion in the -Z direction. The fixed portion 53 has a plurality of wedge-shaped protrusions 53a on both circumferential ends thereof, the width of which increases in the +Z direction. In addition, the fixing portion 53 has a rectangular protrusion 53b on the outer surface thereof in the direction of the second axis R2. The rectangular protrusion 53b increases in the amount of protrusion in the direction of the second axis R2 toward the +Z direction.

As shown in FIG. 10, the plate holder 42 includes a plate holder annular portion 56 surrounding the movable body projecting portion 18, and a pair of plate holder annular portions 56 projecting toward both sides in the first axis R1 direction and extending in the -Z direction. and a plate holder extension portion 57 of. The plate holder annular portion 56 is a facing portion 55 that faces the plate roll annular portion 47 in the Z-axis direction. The plate holder annular portion 56 includes a plate holder annular plate 58 and a plate holder annular wall 59 extending in the +Z direction from the outer peripheral edge of the plate holder annular plate 58 . A plurality of plate holder arcuate grooves 60 spaced apart in the circumferential direction are provided on the +Z direction end surface of the plate holder annular plate 58 . A plurality of plate holder arcuate grooves 60 extend in the circumferential direction and face the plate roll annular groove 52 respectively. A plurality of plate holder arcuate grooves 60 are provided at equal angular intervals. In this example, the plate holder annular plate 58 comprises six plate holder arcuate grooves 60 .

The pair of plate holder extension portions 57 includes a plate holder first extension portion 57a extending from the upper end portion of the plate holder annular wall 59 in the direction of the first axis R1 in a direction away from the plate holder annular portion 56, and a plate holder first extension portion 57a. A plate holder second extension portion 57b inclined in the -Z direction toward a direction away from the plate holder annular portion 56 from the outer peripheral end of the extension portion 57a, and the -Z direction of the plate holder second extension portion 57b. and a plate holder third extending portion 57c extending in the −Z direction from the end of the direction to the outer peripheral side of the movable body 5 . As shown in FIG. 8, the third plate holder extension portion 57c of one of the plate holder extension portions 57 faces the fifth side wall 25 of the movable body 5 with a slight gap in the direction of the first axis R1. The plate holder third extension portion 57c of the other plate holder extension portion 57 faces the sixth side wall 26 of the movable body 5 with a slight gap in the direction of the first axis R1. Each plate holder third extension portion 57c has a first concave curved surface 61 recessed toward the movable body 5 on the first axis R1 line. The first concave curved surface 61 constitutes a first connection mechanism 76 of the gimbal mechanism 7 together with a first support member 81 which will be described later.

As shown in FIG. 10 , the rotating mechanism 44 includes multiple spheres 43 and a retainer 65 . The retainer 65 includes a plurality of sphere holding holes 65a that hold each of the plurality of spheres 43 in a rollable manner. In this example, the rotation mechanism 44 has six spheres 43 . Therefore, the retainer 65 has as many ball holding holes 65a as can hold the six balls 43 . The −Z direction end portion of each sphere 43 is partially inserted into each plate holder arcuate groove 60 . The retainer 65 has an annular retainer main body 66 through which the sphere holding holes 65a penetrate in the Z-axis direction, and four retainer protrusions 67 that protrude from a plurality of locations in the circumferential direction of the retainer main body 66 to both sides in the radial direction. Prepare. The sphere 43 is held in the sphere holding hole 65a and protrudes from the retainer 65 in the -Z and +Z directions. The sphere holding hole 65a has an arcuate curved surface whose inner diameter dimension decreases in the +Z direction. Therefore, the retainer 65 covers each sphere 43 from the +Z direction.

Each retainer projection 67 includes an outer projection 67a that projects radially outward and an inner projection 67b that projects radially inward. The four retainer protrusions 67 are provided at intervals of 90°. When the retainer 65 is arranged between the plate holder annular portion 56 and the plate roll annular portion 47, the plate holder annular wall 59 of the plate holder annular portion 56 abuts on the outer projecting portion 67a from the radially outer side. That is, the plate holder annular wall 59 is a contact portion that contacts the retainer projecting portion 67 from the radial direction. In addition, the bent portion 51 of the plate roll annular portion 47 abuts on the inner projecting portion 67b from the radially inner side. That is, the bent portion 51 of the plate roll annular portion 47 is a contact portion that contacts the retainer projecting portion 67 from the radial direction. The retainer 65 is radially positioned by the retainer protrusion 67 coming into contact with the plate holder annular portion 56 and the plate roll annular portion 47 .

The pressurizing mechanism 45 includes a leaf spring 70 fixed to the plate roll annular portion 47 . The leaf spring 70 has an annular shape. The leaf spring 70 has a tapered shape that is inclined in the +Z direction toward the inner peripheral side. As shown in FIG. 8, the leaf spring 70 has its inner peripheral edge fixed to the -Z direction end surface of the bent portion 51 of the plate roll annular portion 47 . The outer peripheral portion of the leaf spring 70 contacts the plate holder annular portion 56 from the -Z direction side while being bent in the -Z direction. More specifically, the plate holder annular portion 56 has a thin portion 56a that is recessed in the +Z direction at the edge portion on the inner peripheral side. The outer peripheral portion of the leaf spring 70 contacts the thin portion 56a from the -Z direction while being elastically deformed in the direction away from the plate roll annular portion 47. As shown in FIG. Therefore, the leaf spring 70 urges the plate holder 42 (the plate holder annular portion 56) toward the plate roll 41 (the plate roll annular portion 47) by its own elastic restoring force.

Here, as shown in FIG. 9, the movable body 5 has plate rolls fixed to both ends of the movable body main body 17 in the second axis R2 direction. A hole 72 is provided. The plate roll fixing holes 72 are provided in the imaging module holder 16 . The plate roll fixing hole 72 is parallel to the seventh side wall 27 and the eighth side wall 28 and extends in the -Z direction.

The rotation support mechanism 6 is fixed to the movable body 5 by press-fitting the fixing portions 53 of the plate roll extension portions 48 of the plate roll 41 into the plate roll fixing holes 72 . When inserting the fixing portion 53 into the plate roll fixing hole 72 , the movable body projecting portion 18 is inserted into the center hole of the plate roll annular plate 50 . Then, the movable body projecting portion 18 is fitted to the bent portion 51 . Thereby, the plate roll 41 is positioned coaxially with the movable body projecting portion 18 . That is, the plate roll 41 is positioned with the optical axis L as a reference. Further, when the fixing portion 53 of each plate roll extension portion 48 is press-fitted into each plate roll fixing hole 72, the projections 53a and 53b of the fixing portion 53 are plastically deformed and crushed. Thereby, the plate roll 41 and the movable body 5 are fixed. When the plate roll 41 and the movable body 5 are fixed, the movable body 5 can rotate around the optical axis L together with the plate roll 41 .

(Gimbal mechanism)
FIG. 11 is an exploded perspective view of the gimbal frame, reinforcing member, and first support member. As shown in FIG. 4, the gimbal mechanism 7 includes a gimbal frame 75 and a first connection mechanism 76 that connects the gimbal frame 75 and the plate holder 42 rotatably around the first axis R1. Further, as shown in FIG. 5, the gimbal mechanism 7 includes a second connection mechanism 77 that connects the gimbal frame 75 and the fixed body 8 so as to be rotatable around the second axis R2. The first connection mechanism 76 includes a first support member 81 projecting from the gimbal frame 75 along the first axis R1 toward the plate holder 42, and a tip of the first support member 81 provided on the plate holder 42 so as to be rotatable. It has a contacting first concave curved surface 61 . The second connection mechanism 77 includes a second support member 82 that protrudes from the fixed body 8 along the second axis R2 toward the gimbal frame 75, and a second support member 82 that is provided on the gimbal frame 75 and contacts the tip of the second support member 82. 2 concave surfaces 83 are provided. As shown in FIG. 11, a reinforcing member 100 is fixed to the gimbal frame 75 to reinforce the portion through which the first axis R1 passes.

(gimbal frame)
The gimbal frame 75 is made of a metal leaf spring. As shown in FIG. 9, the gimbal frame 75 includes a gimbal frame main body portion 85 positioned in the +Z direction of the plate holder 42, and a gimbal frame main body portion 85 protruding from the gimbal frame main body portion 85 toward both sides in the direction of the first axis R1 and extending in the -Z direction. A pair of first gimbal frame extension portions 86 extending, and a pair of second gimbal frame extension portions 87 projecting from the gimbal frame body portion 85 toward both sides in the direction of the second axis R2 and extending in the -Z direction. . The gimbal frame main body 85 includes a substantially rectangular central plate portion 85a extending in the direction of the first axis R1, and one side of the central plate portion 85a in the direction of the second axis R2 (-Y direction side) inclined in the +Z direction. It includes a first inclined plate portion 85b and a second inclined plate portion 85c inclined in the +Z direction from the other side (+Y direction side) of the second axis R2 direction of the central plate portion 85a. Also, the gimbal frame main body 85 has an opening 90 penetrating in the Z-axis direction in the center. The movable body protrusion 18 is inserted into the opening 90 .

The pair of first gimbal frame extensions 86 are positioned on the outer peripheral side of the plate holder 42 . As shown in FIG. 11, each of the pair of first gimbal frame extension portions 86 is a first gimbal frame extension portion first extension portion that extends in the first axis R1 direction away from the gimbal frame main body portion 85. 86a, and a first gimbal frame extension portion that inclines in the -Z direction from the tip of the first gimbal frame extension portion 86a toward the direction away from the gimbal frame body portion 85 in the direction of the first axis R1. A second extension portion 86b and a third extension of the first gimbal frame extension portion extending in the −Z direction from the −Z direction end of the first gimbal frame extension portion second extension portion 86b on the outer peripheral side of the plate holder 42 in the −Z direction. and a setting portion 86c.

The first gimbal frame extension portion first extension portion 86a extends in the first axis R1 direction from the central plate portion 85a. The first gimbal frame extension portion third extension portion 86c includes a gimbal frame extension portion through-hole 92 penetrating in the direction of the first axis R1. Also, the third extension portion 86c of the first gimbal frame extension portion protrudes from the opening edge of the gimbal frame extension portion through-hole 92 in the direction of the first axis R1 to the side opposite to the movable body 5 (the side of the reinforcing member). A supporting member fixing cylindrical portion 93 is provided. Furthermore, the first gimbal frame extension portion 86 is a pair of second gimbal frame extension portions that protrude in the circumferential direction from both sides of the first gimbal frame extension portion third extension portion 86 c that sandwich the gimbal frame extension portion through-hole 92 in the circumferential direction. 1 gimbal frame extension projecting portion 94 is provided.

Here, the first support member 81 has a cylindrical shape and extends along the first axis R1 in the direction of the first axis R1. The end of the first support member 81 on the movable body 5 side has a hemispherical surface. The first support member 81 is inserted and held in the support member fixing cylindrical portion 93 . The end of the first support member 81 on the movable body 5 side protrudes toward the movable body 5 from the third extension portion 86c of the first gimbal frame extension portion.

The pair of second gimbal frame extensions 87 are positioned on the outer peripheral side of the movable body 5 . Each of the pair of second gimbal frame extension portions 87 extends along the direction of the second axis R2 toward the gimbal frame body portion 8.
5 and a first extension portion 87a of the second gimbal frame extension portion extending away from the gimbal frame body portion 85 in the direction of the first axis R1 from the tip of the first extension portion 87a of the second gimbal frame extension portion. The second gimbal frame extension portion second extension portion 87b that is inclined in the −Z direction toward the separation direction, and the movable body 5 from the −Z direction end of the second gimbal frame extension portion second extension portion 87b. and a second gimbal frame extension portion third extension portion 87c extending in the −Z direction on the outer peripheral side of the second gimbal frame extension portion 87c. The second gimbal frame extension first extension portion 87a of one of the second gimbal frame extension portions 87 positioned in the −Y direction extends from the outer peripheral edge of the first inclined plate portion 85b in the second axis R2 direction. extends to The second gimbal frame extension first extension portion 87a of one of the second gimbal frame extension portions 87 positioned in the +Y direction extends in the second axis R2 direction from the outer peripheral edge of the second inclined plate portion 85c. Extend. Each second gimbal frame extension portion third extension portion 87c has a second concave curved surface 83 that is depressed in the direction of the second axis R2. In addition, the second gimbal frame extension portions 87 are a pair of second gimbal frames that protrude in the circumferential direction from both sides of the second gimbal frame extension portion third extension portion 87c sandwiching the second concave curved surface 83 in the circumferential direction. An extension projecting portion 95 is provided. Here, the second concave curved surface 83 constitutes the second connection mechanism 77 together with the second support member 82 of the fixed body 8 to be described later.

(reinforcing member)
As shown in FIG. 11, the reinforcement member 100 includes a first reinforcement portion 100a positioned in the +Z direction of the first gimbal frame extension portion first extension portion 86a, and a first reinforcement portion 100a positioned from the outer peripheral end of the first reinforcement portion 100a. A second reinforcement portion 100b extending along the second extension portion 86b of the first gimbal frame extension, and a second reinforcement portion 100b extending from the -Z direction end of the second extension along the third extension portion 86c of the first gimbal frame extension. and a third reinforcing portion 100c extending along the . The third reinforcing portion 100c is positioned radially outward of the third extending portion 86c of the first gimbal frame extending portion. The thickness of the reinforcing member 100 in the stacking direction in which the first gimbal frame extending portion 86 and the reinforcing member 100 are stacked is thicker than the first gimbal frame extending portion 86 . The rigidity of the reinforcing member 100 is higher than that of the first gimbal frame extension portion 86 . The reinforcing member 100 is made of resin.

In addition, the reinforcing member 100 has an adhesive injection hole 101 penetrating the first reinforcing portion 100a in the Z-axis direction, and a surface on the side of the first gimbal frame extending portion 86, which is formed by the first reinforcing portion 100a and the second reinforcing portion. A communicating groove 102 extending along the 100 b and the third reinforcing portion 100 c and communicating with the adhesive injection hole 101 is provided. Further, the third reinforcement portion 100c includes a reinforcement member through-hole 103 penetrating in the direction of the first axis R1 and communicating with the gimbal frame extension portion through-hole 92 . The reinforcing member through-hole 103 has an inner diameter dimension that allows insertion of the supporting member fixing cylindrical portion 93 of the first gimbal frame extending portion 86 .

As shown in FIG. 8, the reinforcing member 100 is attached to the extending portion of the gimbal frame 75 by inserting the supporting member fixing cylinder portion 93 into the reinforcing member through-hole 103 of the third reinforcing portion 100c. Therefore, the first support member 81 inserted into the support member fixing cylinder portion 93 is supported by the first gimbal frame extension portion 86 and the reinforcement member 100 . When the adhesive is injected into the adhesive injection hole 101 in this state, the adhesive flows through the communication groove 102 and intervenes between the reinforcing member 100 and the first gimbal frame extending portion 86 . The reinforcing member 100 and the first gimbal frame extending portion 86 are fixed by the adhesive in the communication groove 102 .

7 and 11, when the reinforcing member 100 is attached to the first gimbal frame extending portion 86, the reinforcing member 100 is mounted on both sides of the first gimbal frame extending portion 86 in the circumferential direction around the optical axis L. is provided with a pair of reinforcing member first protrusions 104 protruding toward the movable body 5 side. The pair of reinforcing member first protrusions 104 are positioned in the +Z direction of the pair of first gimbal frame extension protrusions 94 provided on the first gimbal frame extension section 86 . When viewed from the Z-axis direction, the pair of reinforcing member first protrusions 104 and the pair of first gimbal frame extension protrusions 94 overlap. Further, the reinforcing member 100 includes a reinforcing member second protrusion 105 that protrudes toward the movable body 5 in the -Z direction of the first gimbal frame extending portion 86 . When viewed from the Z-axis direction, the reinforcing member second projection 105 overlaps the first gimbal frame extension third extension portion 86c.

(First connection mechanism)
Here, the pair of first gimbal frame extending portions 86 are positioned on the outer peripheral side of the movable body 5 . The pair of plate holder extensions 57 are positioned between the pair of first gimbal frame extensions 86 and the movable body 5 . The first gimbal frame extension portion third extension portion 86c that holds the first support member 81 and the plate holder third extension portion 57c that includes the first concave curved surface 61 are arranged on the first axis R1 as follows: opposite. The first connection mechanism 76 is configured by contacting the first concave curved surface 61 with the tip of the first support member 81 that protrudes from the first gimbal frame extending portion 86 toward the movable body 5 . In this example, the first support member 81 and the first concave curved surface 61 are in point contact. Thereby, the rotation support mechanism 6 is rotatably supported by the gimbal frame 75 via the first connection mechanism 76 . Therefore, the movable body 5 supported by the rotation support mechanism 6 is rotatably supported by the gimbal mechanism 7 around the first axis R1.

When the movable body 5 and the rotation support mechanism 6 are supported by the gimbal mechanism 7 , the gimbal frame main body 85 , the plate roll annular part 47 , and the plate holder annular part 56 are movable in the +Z direction of the movable body main body 17 . It is positioned on the outer peripheral side of the body protrusion 18 . The plate roll annular portion 47 is positioned between the gimbal frame main body portion 85 and the movable body main body portion 17 in the Z-axis direction. The plate holder annular portion 56 is positioned between the gimbal frame main body portion 85 and the movable body main body portion 17 in the Z-axis direction. Also, the plate roll annular portion 47 and the plate holder annular portion 56 are located in the +Z direction from the first axis R1 and the second axis R2. Furthermore, the gimbal frame main body portion 85 , the plate roll annular portion 47 , and the plate holder annular portion 56 are located in the +Z direction from the imaging element 3 .

(fixed body)
FIG. 12 is a perspective view of a case and a gimbal frame receiving member that constitute the fixed body 8. FIG. FIG. 13 is an exploded perspective view of the case and gimbal frame receiving member. As shown in FIG. 1, the fixed body 8 has a case 109 made of resin. The case 109 includes a frame portion 110 surrounding the movable body 5, the rotation support mechanism 6, and the gimbal frame 75 from the outer peripheral side. The frame portion 110 is rectangular. As shown in FIG. 12, the frame portion 110 has a first frame portion 111 and a second frame portion 112 facing each other in the X direction, and a third frame portion 113 and a fourth frame portion 114 facing each other in the Y direction. Prepare. The first frame portion 111 is positioned in the -X direction of the second frame portion 112 . The third frame portion 113 is positioned in the −Y direction of the fourth frame portion 114 .

The first frame portion 111 is provided with a first coil fixing hole 111a. As shown in FIG. 2, the first coil 115 is fixed to the first coil fixing hole 111a. The third frame portion 113 is provided with a second coil fixing hole 113a. A second coil 116 is fixed to the second coil fixing hole 113a. The first coil 115 and the second coil 116 are oval air-core coils elongated in the circumferential direction. As shown in FIG. 12, the fourth frame portion 114 is provided with a third coil fixing hole 114a. As shown in FIG. 1, a third coil 117 is arranged in the third coil fixing hole 114a. The third coil 117 is an air-core coil elongated in the Z-axis direction. Here, the first coil 115 , the second coil 116 and the third coil 117 are electrically connected to the flexible printed circuit board 15 . The flexible printed circuit board 15 is routed along the outer peripheral surfaces of the fourth frame portion 114, the first frame portion 111, and the third frame portion 113 of the frame portion 110 in this order. As shown in FIG. 12, the second frame portion 112 is provided with an opening 112a. A flexible printed circuit board (not shown) pulled out from the imaging module 4 of the movable body 5 is pulled out in the +X direction of the frame 110 through the opening 112a.

As shown in FIGS. 4 and 12 , groove portions 120 that are recessed radially outward and extend in the Z-axis direction are provided in each of the diagonal portions of the frame portion 110 in the direction of the first axis R1. As shown in FIG. 12, the groove 120 is defined by a bottom surface 120a extending in the Z-axis direction and a pair of side surfaces 120b extending inwardly from both circumferential ends of the bottom surface 120a around the optical axis L. As shown in FIG.

As shown in FIGS. 5 and 12, second support members 82 projecting toward the gimbal frame 75 along the second axis R2 are fixed to the diagonal portions of the frame portion 110 in the direction of the second axis R2. ing. The second support member 82 is a sphere. More specifically, as shown in FIG. 13 , concave portions 121 that are recessed radially outward are provided at respective diagonal portions of the frame portion 110 in the direction of the second axis R2. Each recess 121 has a bottom surface 121a extending in the direction of the second axis R2, a back surface 121b extending in the +Z direction from the outer peripheral edge of the bottom surface 121a, and a pair of side surfaces extending in the +Z direction from both ends of the bottom surface 121a in the circumferential direction around the optical axis L. 121c and . The bottom surface 121a has a first groove 121d extending in the direction of the second axis R2 with a constant width in a central portion in the circumferential direction. The back surface 121b has a second groove 121e extending in the Z-axis direction with a constant width in the circumferential central portion. The first groove 121d and the second groove 121e communicate with each other.

As shown in FIG. 12, a gimbal frame receiving member 125 is fixed to each recess 121 . As shown in FIG. 13, the gimbal frame receiving member 125 includes a second support member 82 and a thrust receiving member 126 to which the second support member 82 is fixed. The thrust receiving member 126 and the second support member 82 are made of metal. As shown in FIGS. 7 and 13, the thrust receiving member 126 includes a plate-shaped first plate portion 131 extending in the Z-axis direction, and a substantially right angle bent from the end of the first plate portion 131 in the -Z direction. A second plate portion 132 extending radially inward, and a pair of third plate portions 133 extending radially inward by bending substantially perpendicularly from both circumferential sides of the +Z direction end of the first plate portion 131. Prepare. The inner peripheral side end portions of the pair of third plate portions 133 are bent in the direction of separating from each other in the circumferential direction. The first plate portion 131 is provided with a second support member fixing hole 131a. The second support member fixing hole 131a is positioned between the second plate portion 132 and the pair of third plate portions 133 in the Z-axis direction. The second support member 82 is fixed to the first plate portion 131 by welding in a state where a part of the outer peripheral side is partially fitted in the second support member fixing hole 131a. The second support member 82 protrudes from the first plate portion 131 to the inner peripheral side.

When the gimbal frame receiving member 125 is inserted into the recess 121 of the case 109, the pair of third plate portions 133 of the thrust receiving member 126 come into contact with the pair of side surfaces 121c of the recess 121, as shown in FIG. Thereby, the second support member 82 is positioned in the circumferential direction around the optical axis L. As shown in FIG. Also, the second plate portion 132 of the thrust receiving member 126 contacts the bottom surface 121 a of the recess 121 . Thereby, the second support member 82 is positioned in the Z-axis (optical axis L) direction. The thrust receiving member 126 is fixed to the recess 121 with an adhesive applied to the first groove 121d and the second groove 121e. When the thrust receiving member 126 is fixed to the recessed portion 121 , the second support member 82 is positioned on the second axis R2 line and is positioned inside the first plate portion 131 of the thrust receiving member 126 fixed to the frame portion 110 . protrude to the side.

(Second connection mechanism)
When the gimbal mechanism 7 supports the movable body 5 around the second axis R<b>2 , the gimbal frame 75 supporting the movable body 5 and the rotation support mechanism 6 is arranged inside the frame portion 110 . Further, as shown in FIG. 4, the first gimbal frame extension portion 86 and the reinforcing member 100 are inserted into the groove portions 120 provided in the diagonal portions of the frame portion 110 . Further, as shown in FIG. 5, a second support member 82 (sphere) disposed at the diagonal portion of the frame portion 110 and a second gimbal frame extension portion third extension portion 87c having a second concave curved surface 83 are provided. Oppose to. Then, the tip portion of the second support member 82 is inserted into the second concave curved surface 83 and brought into contact with the second concave curved surface 83 . Also, as shown in FIG. 7, a pair of second gimbal frame extension protrusions 95 are inserted between the pair of third plate portions 133 and the second plate portion 132 of the thrust receiving member 126 . Since this constitutes the second connection mechanism 77 , the rotation support mechanism 6 is supported by the gimbal mechanism 7 so as to be rotatable about the second axis R<b>2 . That is, the rotation support mechanism 6 is rotatably supported about the first axis R1 and rotatably supported about the second axis R2 by the gimbal mechanism 7 . Therefore, the movable body 5 supported by the rotation support mechanism 6 is also supported rotatably about the first axis R1 and rotatably about the second axis R2 by the gimbal mechanism 7 .

Here, since the gimbal frame 75 is a plate spring, the second gimbal frame extending portion 87 is elastically deformable in the direction of the second axis R2. Therefore, when the second support member 82 and the second concavely curved surface 83 of the second gimbal frame extension portion 87 are brought into contact with each other, the second gimbal frame extension portion 87 is deflected toward the inner peripheral side. As a result, the second gimbal frame extending portion 87 elastically contacts the second support member 82 from the inner peripheral side due to the elastic restoring force toward the outer peripheral side. Therefore, disconnection between the second gimbal frame extension portion 87 and the frame portion 110 can be prevented or suppressed.

(Magnetic Drive Mechanism for Shake Correction and Magnetic Drive Mechanism for Rolling Correction)
When the movable body 5 and the rotation support mechanism 6 are supported by the gimbal mechanism 7, the first magnet 35 fixed to the first side wall 21 of the movable body 5 and the first coil 115 face each other with a gap in the X direction. do. The first magnet 35 and the first coil 115 constitute the second shake correction magnetic drive mechanism 12 . Also, the second magnet 36 fixed to the third side wall 23 of the movable body 5 and the second coil 116 face each other with a gap in the Y direction. The second magnet 36 and the second coil 116 constitute the first magnetic drive mechanism 11 for shake correction. Accordingly, power supply to the first coil 115 causes the movable body 5 to rotate around the Y axis. In addition, by supplying power to the second coil 116, the movable body 5 rotates around the X axis. The shake correction magnetic drive mechanism 10 rotates the movable body 5 about the Y axis by the first shake correction magnetic drive mechanism 11 and rotates the movable body 5 about the X axis by the second shake correction magnetic drive mechanism 12 . , are combined to rotate the movable body 5 around the first axis R1 and around the second axis R2.

Further, when the movable body 5 is arranged on the inner peripheral side of the frame portion 110, the third magnet 37 fixed to the fourth side wall 24 of the movable body 5 and the third coil 117 are spaced apart in the Y direction. opposite. The third magnet 37 and the third coil 117 constitute the magnetic drive mechanism 13 for rolling correction. Therefore, the movable body 5 rotates around the optical axis L by supplying power to the third coil 117 .

Here, as shown in FIGS. 4 and 5, the gap D1 between the second gimbal frame extension portion 87 and the plate roll extension portion 48 in the Z-axis direction corresponds to the first gimbal frame extension portion in the Z-axis direction. larger than the gap between portion 86 and plate holder extension 57 . Therefore, when the gimbal mechanism 7 rotates the rotation support mechanism 6 around the first axis R<b>1 , the rotation support mechanism 6 can be prevented from coming into contact with the second gimbal frame extending portion 87 .

Also, in a state where the gimbal frame 75 is connected to the frame portion 110 via the second connection mechanism 77 , the pair of first gimbal frame extension portions 86 and the reinforcing member 100 of the gimbal frame 75 are connected to the first gimbal frame portion 110 in the frame portion 110 . It is arranged inside a groove portion 120 provided at a diagonal portion in the direction of the axis R1. Here, as shown in FIG. 3, the pair of side surfaces 120b of the groove 120 face the reinforcing member 100 in the circumferential direction around the optical axis L with a predetermined first gap therebetween. A pair of side surfaces 120b of the groove portion 120 are movement range defining portions 145 that contact the reinforcing member 100 to define the movement range of the gimbal frame 75 when the gimbal frame 75 is displaced in the circumferential direction. Further, as shown in FIGS. 3 and 4, in the groove portion 120, the bottom surface 120a positioned radially outwardly of the reinforcing member 100 faces the reinforcing member 100 with a second gap in the direction of the first axis R1. The bottom surface 120a of the groove portion 120 is a rotation range defining portion 146 that contacts the reinforcing member 100 to define the rotation range of the gimbal frame 75 when the gimbal frame 75 rotates about the second axis R2.

In addition, as shown in FIGS. 2 and 6 , a rectangular first magnetic plate 141 is arranged on the outer peripheral side of the first coil 115 . A rectangular second magnetic plate 142 is arranged on the outer peripheral side of the second coil 116 . The first magnetic plate 141 faces the first magnet 35 of the movable body 5 and constitutes a magnetic spring for returning the movable body 5 to the reference rotational position in the rotational direction around the Y-axis. The second magnetic plate 142 faces the second magnet 36 of the movable body 5 and constitutes a magnetic spring for returning the movable body 5 to the reference rotational position in the rotational direction around the X axis. Further, as shown in FIGS. 1 and 6 , a rectangular third magnetic plate 143 is arranged on the outer peripheral side of the third coil 117 . The third magnetic plate 143 faces the third magnet 37 of the movable body 5 and constitutes a magnetic spring for returning the movable body 5 to the reference rotational position in the rotational direction around the optical axis L.

(Effect)
According to this example, the movable body 5 is provided with a movable body protrusion 18 coaxial with the lens 2 . On the other hand, in the rotation support mechanism 6, the plate roll 41 fixed to the movable body 5 has a plate roll annular portion 47 in which the movable body projecting portion 18 is fitted. Therefore, the plate roll 41 is positioned with respect to the optical axis L of the movable body 5 when the plate roll 41 is fitted in the movable body projecting portion 18 . Therefore, the optical axis L of the movable body 5 and the rotation axis of the rotation support mechanism 6 can be aligned.

Further, the plate roll annular portion 47 has a cylindrical bent portion 51 bent in the -Z direction from the inner peripheral edge. The movable body projecting portion 18 has a cylindrical portion 30 extending in the Z-axis direction with a constant outer diameter. Also, the cylindrical portion 30 fits into the bent portion 51 . Therefore, it is easy to put the plate roll 41 into a state in which it is fitted in the movable body projecting portion 18 .

Further, in this example, the bent portion 51 has a tapered inner peripheral surface 51a that slopes outward toward the end in the -Z direction. Therefore, it is easy to fit the movable body projecting portion 18 into the plate roll annular portion 47 from the -Z direction side. Further, the plate roll annular portion 47 can be accurately positioned with respect to the optical axis L when the movable body projecting portion 18 is inserted into the plate roll annular portion 47 .

Further, according to this example, the rotation support mechanism 6 that supports the movable body 5 so as to be rotatable about the optical axis L is rotated by the gimbal mechanism 7 about the first axis R1 and the second axis R2 intersecting the optical axis L. It is rotatably supported. Therefore, by driving the anti-shake magnetic drive mechanism 10, the rotary support mechanism 6 rotates together with the movable body 5 around the first axis R1 and the second axis R2. Therefore, even when the movable body 5 rotates about the first axis R1 or the second axis R2, the rotation axis of the movable body 5 by the rotation support mechanism 6 and the optical axis L of the movable body 5 match. Therefore, when the movable body 5 is rotated about the first axis R1 or the second axis R2 by driving the rolling correction magnetic drive mechanism 13 to rotate the movable body 5, the movable body 5 is rotated about the first axis R1 or the second axis R2. Rotate around axis L.

Furthermore, in this example, the gimbal frame 75 includes a gimbal frame body portion 85 positioned in the +Z direction of the plate holder 42, and a gimbal frame body portion 85 that protrudes toward both sides in the direction of the first axis R1 and extends in the -Z direction. and a pair of first gimbal frame extensions 86 . The pair of first gimbal frame extensions 86 are positioned on the outer peripheral side of the plate holder 42 . The first support member 81 protrudes toward the plate holder 42 from each of the pair of first gimbal frame extensions 86 . The gimbal frame main body 85 has an opening 90 penetrating in the Z-axis direction, and the movable body protrusion 18 is inserted into the opening 90 . The plate roll 41 also includes a plate roll annular portion 47 surrounding the movable body projecting portion 18 between the gimbal frame main body portions 85 in the Z-axis direction. The plate holder 42 includes a plate holder annular portion 56 surrounding the movable body projecting portion 18 between the gimbal frame main body portions 85 in the Z-axis direction, and a plate holder annular portion 56 extending from the plate holder annular portion 56 in the first axis R1 direction. A pair of plate holder extensions 57 protruding toward both sides and extending in the -Z direction. A first concave curved surface 61 is provided on each of the pair of plate holder extension portions 57 . Therefore, the gimbal frame main body 85, the plate roll annular portion 47, and the plate holder annular portion 56 can be arranged by utilizing the dead space formed on the outer peripheral side of the movable body projecting portion 18 in the movable body 5. FIG. Also, by using the first pair of first gimbal frame extension portions 86 and the pair of plate holder extension portions 57, the first connection mechanism 76 can be configured at two locations on the first axis R1 line.

In this example, the gimbal mechanism 7 also includes a second connection mechanism 77 that connects the gimbal frame 75 and the fixed body 8 so as to be rotatable about the second axis R2. The gimbal frame 75 includes a pair of second gimbal frame extending portions 87 that protrude from the gimbal frame body portion 85 on both sides in the direction of the second axis R2 and extend in the -Z direction. The fixed body 8 includes a frame portion 110 surrounding the movable body 5, the plate holder 42, and the gimbal frame 75 from the outer peripheral side. The second connection mechanism 77 includes a second support member 82 projecting toward the gimbal frame 75 along the second axis R2 from each diagonal portion of the frame portion 110 in the direction of the second axis R2, and a pair of second gimbals. A second concave curved surface 83 is provided on each of the frame extension portions 87 and with which the tip of the second support member 82 contacts. Therefore, the gimbal mechanism 7 can rotatably support the rotation support mechanism 6 around the second axis R2.

(Modification)
FIG. 14 is an explanatory diagram of another example of the plate roll 41. As shown in FIG. In the plate roll 41A of the modified example shown in FIG. 14, the center hole 150 of the bent portion 51 of the plate roll annular portion 47 has an inner diameter larger than the outer diameter of the cylindrical portion 30 from the end in the -Z direction toward the +Z direction. A large-diameter hole portion 151 and a small-diameter hole portion 51b having an inner diameter smaller than that of the large-diameter hole portion 151 are provided in this order.

Therefore, when fixing the plate roll 41 to the movable body 5, the movable body projecting portion 18 is first inserted into the large diameter hole portion 151 and then into the small diameter hole portion 51b. The cylindrical portion 30 of the movable body protruding portion 18 fits into the small diameter hole portion 51b. That is, the cylindrical portion 30 of the movable body 5 fits into the inner peripheral wall of the small-diameter hole portion 51b of the bent portion 51. As shown in FIG. Thereby, the plate roll 41 is positioned coaxially with respect to the optical axis L. As shown in FIG.

Even when the plate roll 41A is used, it is easy to fit the movable body projecting portion 18 into the plate roll annular portion 47 from the -Z direction side.

Here, in the above example, the gimbal frame body portion 85 , the plate roll annular portion 47 , and the plate holder annular portion 56 are positioned in the +Z direction of the movable body body portion 17 . On the other hand, with the plate roll annular portion 47 and the plate holder annular portion 56 positioned in the +Z direction of the movable body 5, the gimbal frame body portion 85 is positioned in the -Z direction of the movable body body portion 17. can also In this case, the pair of plate holder extensions 57 are positioned inside the pair of first gimbal frame extensions 86 .

Even in this way, the gimbal mechanism 7 can support the movable body 5 so as to be rotatable about the first axis R1 and the second axis R2. Further, by fitting the plate roll 41 to the movable body protruding portion 18, the plate roll 41 can be positioned with respect to the optical axis L of the movable body 5, and the optical axis L of the movable body 5 and the rotation support mechanism 6 can be positioned. can be aligned with the axis of rotation by

(Another example of rotation support mechanism)
Next, FIG. 15 is a perspective view of another example of the rotation support mechanism 6. As shown in FIG. FIG. 16 is a cross-sectional view of another example of the rotation support mechanism. A rotation support mechanism 6A of a modified example will be described with reference to FIGS. 15 and 16. FIG. The rotation support mechanism 6A of this example includes a plate roll 41 fixed to the movable body 5, a plate holder 42 having a facing portion facing the plate roll 41 in the Z-axis direction, and a state in which the plate roll 41 and the facing portion are in contact with each other. and a rotating mechanism 44 including a plurality of balls 43 and a retainer 65 that roll on the plate roll 41 and the plate holder 42, and a pressure mechanism 45 that biases the plate roll 41 and the plate holder 42 toward each other. 16, the rotation mechanism 44 is omitted.

The plate roll 41 is made of metal. As shown in FIG. 15, the plate roll 41 includes a plate roll annular portion 47 surrounding the optical axis L, and a pair of plate roll extensions that protrude from the plate roll annular portion 47 to both sides in the second axis R2 direction and extend in the first direction. and a setting portion 48 . The plate roll annular portion 47 includes the plate roll annular plate 51, the plate roll inner cylindrical portion 161 extending in the +Z direction from the inner peripheral edge of the plate roll annular plate 51, and the outer peripheral edge of the plate roll annular plate 51. and a plate roll outer cylindrical portion 162 extending in the +Z direction from. As shown in FIG. 16 , a plate roll annular groove 52 is provided in the radial center of the +Z-direction end face of the plate roll annular plate 50 . The pair of plate roll extension portions 48 protrude in the second axial direction R2 from the +Z direction end portion of the plate roll outer cylindrical portion 162 and extend in the -Z direction. The plate roll outer cylindrical portion 162 is provided with two notch portions 162a in the circumferential direction overlapping with the first axis R1 when viewed from the optical axis L direction.

The plate holder 42 includes a plate holder annular portion 56 surrounding the optical axis L, a pair of plate holder extended portions 57 projecting from the plate holder annular portion 56 toward both sides in the first axis R1 direction and extending in the -Z direction, Prepare. The plate holder annular portion 56 is a facing portion 55 that faces the plate roll annular portion 47 in the Z-axis direction. The plate holder annular portion 56 comprises a plate holder annular plate 58 . The plate holder annular plate 58 has a flat plate shape and is arranged between the plate roll inner cylindrical portion 161 and the plate roll outer cylindrical portion 162 . The pair of plate holder extension portions 57 protrude in the direction of the first axis R1 through two notch portions 162a provided in the plate roll outer cylindrical portion 162, respectively.

The leaf spring 70 of the pressurizing mechanism 45 has a tapered shape that is inclined in the −Z direction toward the outer peripheral side. The leaf spring 70 is fixed to the end of the plate roll inner cylindrical portion 161 in the +Z direction. The leaf spring 70 contacts the opposite side of the plate holder annular portion 56 to the plate roll annular portion 47 while being elastically deformed in a direction away from the plate roll annular portion 47 (plate roll annular plate 51 ). Therefore, the plate holder annular portion 56 is urged toward the plate roll annular portion 47 by the elastic restoring force of the leaf spring 70 fixed to the plate roll annular portion 47 .

In the rotation support mechanism 6A of this example, the movable body projecting portion 18 is inserted into the plate roll inner cylindrical portion 161 of the plate roll 41 and fitted. Thereby, the plate roll 41 is positioned coaxially with the movable body projecting portion 18 . Also in this example, the movable body 5 can be rotatably supported around the optical axis L by the rotary support mechanism 6A.

REFERENCE SIGNS LIST 1 optical unit with shake correction function 2 lens 3 imaging element 4 imaging module 5 movable body 6 rotation support mechanism 7 gimbal mechanism 8 fixed body 9 cover 10 Correction magnetic drive mechanism 11 First shake correction magnetic drive mechanism 12 Second shake correction magnetic drive mechanism 13 Rolling correction magnetic drive mechanism 15 Flexible printed circuit board 16 Imaging module holder 17 Movable body main portion 18 Movable body projecting portion 21 First side wall 22 Second side wall 23 Third side wall 24 Fourth side wall 25 Fifth side wall 26 Sixth side wall 27 ... seventh side wall, 28 ... eighth side wall, 30 ... cylindrical portion, 31 ... small-diameter cylindrical portion, 32 ... intermediate portion, 35 ... first magnet, 36 ... second magnet, 37 ... third magnet, 41 ... plate roll, 42... Plate holder, 43... Sphere, 44... Rotating mechanism, 45... Pressurizing mechanism, 47... Plate roll annular part, 48... Plate roll extension part, 50... Plate roll annular plate, 51... Bending part (plate roll cylinder portion), 51a... inner peripheral surface, 52... plate roll annular groove, 53... fixed portion, 53a, 53b... projection, 55... opposing portion, 56... plate holder annular portion, 56a... thin portion, 57... plate holder extension Part 57a... Plate holder first extension part 57b... Plate holder second extension part 57c... Plate holder third extension part 58... Plate holder annular plate 59... Plate holder annular wall 60... Plate holder Arc groove 60 Each plate holder arc groove 61 First concave surface 65 Retainer 65a Sphere holding hole 66 Retainer main body 67 Retainer protrusion 67a Outer protrusion 67b Inner protrusion Portion 70 Leaf spring 72 Plate roll fixing hole 75 Gimbal frame 76 First connection mechanism 77 Second connection mechanism 81 First support member 82 Second support member 83 Second 2 Concave surfaces 85 Gimbal frame main body 85a Central plate portion 85b First inclined plate portion 85c Second inclined plate portion 86 First gimbal frame extension portion 86a First gimbal frame extension 1st gimbal frame extension 2nd extension 86c 1st gimbal frame extension 3rd extension 87 2nd gimbal frame extension 87a Second gimbal frame extension part first extension part 87b... Second gimbal frame extension part second extension part 87c... Second gimbal frame extension part third extension part 90... Opening 92... Gimbal frame extension portion through hole 93 Support member fixing cylinder 94 First gimbal frame extension projections 157, 95 Second gimbal frame extension projections 157, 100 Reinforcing member 100a First reinforcing portion 100b Second reinforcing portion 100c Third reinforcing portion 101 Adhesive injection hole 102 Communication groove 103 Reinforcement member through hole 104 Reinforcement member first projections 157, 105 Reinforcing member second protrusions 157, 109 Case 110 Frame 111 First frame portion 111a First coil fixing hole 112 Second frame portion 112a Opening 113 Third Frame portion 113a Second coil fixing hole 114 Fourth frame portion 114a Third coil fixing hole 115 First coil 116 Second coil 117 Third coil 120 Groove portion 120a... bottom surface 120b... side surface 121... concave portion 121a... bottom surface 121b... rear surface 121c... side surface 121d... first groove 121e... second groove 125... gimbal frame receiving member 126... thrust receiving member 131 1st plate portion 131a 2nd support member fixing hole 132 2nd plate portion 133 3rd plate portion 141 1st magnetic plate 142 2nd magnetic plate 143 3rd magnetic plate 145... Movement range defining portion 146... Rotation range defining portion 150... Center hole of plate roll annular portion 151... Large diameter hole portion 152... Small diameter hole portion 156... Notch 157... Projection 161... Plate roll inner annular wall (plate roll cylindrical portion) 162... Plate roll outer cylindrical portion 162a... Notch portion R1... First shaft R2... Second shaft

Claims (7)

a movable body having a lens;
a rotation support mechanism that supports the movable body so as to be rotatable about the optical axis of the lens;
a rolling correction magnetic driving mechanism for rotating the movable body around the optical axis;
has
When one of the optical axis directions is the first direction and the other is the second direction,
the movable body includes a movable body main body and a movable body protruding part coaxial with the lens and protruding from the movable body main body in the second direction;
The lens is accommodated in the movable body projecting portion,
The rotation support mechanism includes a plate roll fixed to the movable body, a plate holder including a facing portion facing the plate roll in the optical axis direction, and a plate roll between the plate roll and the facing portion. a rotation mechanism that can rotate about the optical axis with respect to the plate holder,
The plate roll includes a plate roll annular portion in which the movable body projecting portion fits on the inner peripheral side,
The optical unit with a shake correction function, wherein the plate holder includes, as the facing portion, a plate holder annular portion surrounding the movable body projecting portion. The plate roll annular portion includes a plate roll cylindrical portion extending in the optical axis direction from the inner peripheral edge,
the movable body projecting portion has a cylindrical portion extending in the optical axis direction with a constant outer diameter,
2. The optical unit with shake correction function according to claim 1, wherein the cylindrical portion is fitted into the plate roll cylindrical portion. 3. The optical unit with a shake correction function according to claim 2, wherein the plate roll cylindrical portion has a tapered inner peripheral surface that is inclined outward toward the end in the first direction. The center hole of the plate roll cylindrical portion has a large diameter hole portion whose inner diameter is larger than the outer diameter of the cylindrical portion of the movable body protruding portion and the large a small diameter hole portion having an inner diameter smaller than that of the diameter hole portion, in this order;
3. The optical unit with shake correction function according to claim 2, wherein the cylindrical portion of the movable body projecting portion is fitted into the small diameter hole portion. a gimbal mechanism that rotatably supports the rotation support mechanism about a first axis that intersects with the optical axis and rotatably supports it about a second axis that intersects with the optical axis and the first axis;
a fixed body that supports the movable body via the gimbal mechanism and the rotation support mechanism;
a shake correction magnetic drive mechanism for rotating the movable body around the first axis and around the second axis;
The gimbal mechanism includes a gimbal frame and a first connection mechanism that rotatably connects the plate holder and the gimbal frame,
The first connection mechanism includes a first support member that protrudes from the gimbal frame along the first axis toward the plate holder, and a tip of the first support member that is provided on the plate holder and is rotatably in contact with the plate holder. 5. The optical unit with a shake correcting function according to claim 1, further comprising a first concave curved surface. The gimbal frame includes a gimbal frame main body portion positioned in the second direction of the plate holder, and a pair of first gimbal frame main body portions projecting from the gimbal frame main body portion toward both sides in the first axial direction and extending in the first direction. a gimbal frame extension;
the pair of first gimbal frame extensions are positioned on the outer peripheral side of the plate holder,
the first support member protruding from each of the pair of first gimbal frame extensions toward the plate holder;
The gimbal frame main body has an opening penetrating in the optical axis direction,
The movable body projecting portion is inserted into the opening,
the plate roll annular portion is positioned between the movable body main body portion and the gimbal frame main body portion in the optical axis direction;
the plate holder annular portion surrounds the movable body projecting portion between the movable body body portion and the gimbal frame body portion in the optical axis direction;
the plate holder includes a pair of plate holder extension portions that protrude from the plate holder annular portion toward both sides in the first axial direction and extend in the first direction;
6. The optical unit with a shake correction function according to claim 5, wherein each of the pair of plate holder extension portions is provided with the first concave curved surface. The gimbal mechanism includes a second connection mechanism that connects the gimbal frame and the fixed body so as to be rotatable about the second axis,
the gimbal frame includes a pair of second gimbal frame extending portions that protrude from the gimbal frame main body portion to both sides in the second axial direction and extend in the first direction;
the fixed body includes a frame surrounding the movable body, the plate holder, and the gimbal frame from an outer peripheral side;
The second connection mechanism includes a second support member projecting toward the gimbal frame on the second axis from each diagonal portion of the frame in the second axis direction, and a pair of the second gimbal frames. 7. The optical unit with a shake correction function according to claim 6, further comprising: a second concave curved surface provided on each of the extension portions and with which the tip of the second support member contacts.

Images