JP2023023132A - Optical unit with shake correction function - Google Patents

Abstract

To provide an optical unit with a shake correction function which can suppress the obstruction of the movement of a movable body by a flexible printed board drawn from the movable body.SOLUTION: A movable body 5 of an optical unit 1 with a shake correction function is orthogonal to an optical axis L and oscillates around an X axis and a Y axis orthogonal to each other. A flexible printed board 8 drawn from the movable body 5 meanders in the Z-axis direction after being drawn in the X-axis direction from a position different from an oscillation center point P of the movable body 5 in the Z-axis direction, reaches an XY plane including the X axis and Y axis and then extends in the Y-axis direction and X-axis direction. The flexible printed board 8 is routed in a state where the thickness direction is oriented to the Z-axis direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to an optical unit with a shake correction function that rotates a camera module about two axes perpendicular to the optical axis to correct shake.

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 camera module is mounted is rotated around a predetermined axis. There is something that makes 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 in the same document includes a movable body including a camera module, a fixed body, a support mechanism for supporting the movable body rotatably around the optical axis with respect to the fixed body, and a movable body around the optical axis. and a magnetic drive mechanism that rotates the A flexible printed circuit board connected to the camera module is pulled out from the movable body. The flexible printed circuit board is pulled out from the movable body with its thickness direction facing the optical axis direction, and then bent at 90 degrees in the optical axis direction. Thereafter, the flexible printed circuit board is oriented with its thickness direction perpendicular to the optical axis, and is routed in an L shape along the outer peripheral wall of the movable body. Furthermore, the flexible printed circuit board is bent 90 degrees toward the outer peripheral side from the L-shaped tip portion and fixed to the fixed body. A reinforcing plate for maintaining the bent shape is fixed to each of the two bent portions where the flexible printed circuit board is bent. When the movable body rotates around the optical axis for shake correction, the flexible printed circuit board bends between the movable body and the fixed body.

JP 2020-27134 A

Among optical units with a shake correction function, there is one that performs shake correction by rotating a movable body around a first axis orthogonal to the optical axis and around a second axis orthogonal to the optical axis and the first axis. be. When the flexible printed circuit board described in Cited Document 1 is adopted for such an optical unit with a shake correction function, when the movable body rotates around the first axis and around the second axis, the thickness direction becomes the optical axis. The portion that is routed in the orthogonal direction is difficult to bend, and the load for rocking the movable body increases.

In view of the above points, an object of the present invention is to provide an optical unit with a shake correction function that can suppress the rotation of a movable body that rotates around two axes perpendicular to the optical axis from being hindered by a flexible printed circuit board. That's what it is.

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 camera module, a support body, and three axes orthogonal to each other as the X axis, the Y axis, and the Z axis. When the optical axis of the module is aligned with the Z-axis, the movable body is supported by the support so as to be swingable about the X-axis, and the movable body is swingable about the Y-axis. a rocking support mechanism for supporting the movable body around the X-axis and the Y-axis; a rocking drive mechanism for rocking the movable body around the X-axis and the Y-axis; , the swing center point of the movable body where the Y-axis and the Z-axis intersect is positioned inside the movable body, and the flexible printed circuit board is routed with the thickness direction directed toward the Z-axis direction. a pull-out portion that is pulled out in the X-axis direction from a position different from the swing center point of the movable body in the Z-axis direction toward the distal end from the movable body; a meandering portion that meanders once or more times toward the swing center point side in the Z-axis direction so as to overlap with the drawn portion, and a side of the meandering portion that is opposite to the drawn portion in the Z-axis direction. a first extending portion extending in a first extending direction different from the X-axis direction from the last meandering portion located at the end of the first extending portion opposite to the last meandering portion; a second extending portion extending in a second extending direction different from the extending direction, wherein the final meandering portion overlaps an XY plane including the X-axis and the Y-axis.

According to the present invention, the flexible printed circuit board pulled out from the movable body is routed with the thickness direction directed to the Z-axis direction, and the first extension portion and the second extension portion extending in two different directions are arranged. and a part. Therefore, when the movable body rotates around the X-axis and the Y-axis perpendicular to the Z-axis, compared to the case where the flexible printed circuit board is routed with its thickness direction perpendicular to the Z-axis, The first extension portion and the second extension portion are easily bent. Further, the flexible printed circuit board is pulled out in the X-axis direction from a position different from the swing center point of the movable body in the Z-axis direction, and then meanders in the Z-axis direction to form an XY plane including the X-axis and the Y-axis. and thereafter extends in the first extending direction and the second extending direction. As a result, the first extension portion is pulled out in the first extension direction from a position near the swing center point in the Z-axis direction. Moreover, since the second extension portion is continuous with the first extension portion, it can be routed at a position close to the swing center point in the Z-axis direction. Here, if the first extending portion and the second extending portion extending in two directions are routed at a position close to the center of rotation in the Z-axis direction, they are positioned away from the center of rotation in the Z-axis direction. When the movable body rotates around the X-axis and the Y-axis, the flexible printed circuit board is more likely to bend than when the flexible printed circuit board is routed. Therefore, it is possible to prevent the rotation of the movable body from being hindered by the flexible printed circuit board. Further, in the present invention, the flexible printed circuit board is meandering at the meandering portion and is not bent at a specific angle. Therefore, it is not necessary to bend the flexible printed circuit board at a predetermined angle when assembling the optical unit with a shake correction function. Therefore, it becomes easy to assemble the optical unit with a shake correction function.

In the present invention, the support includes a frame surrounding the movable body from the outside in the radial direction, and the first extending portion and the second extending portion are arranged radially outside the frame. can be routed along In this way, the flexible printed circuit board can be routed around in the vicinity of the support, so that it is easy to suppress an increase in the area occupied by the optical unit with a shake correction function when viewed in the Z-axis direction.

In this case, the frame body includes a first frame portion and a second frame portion that face each other in the X-axis direction and extend parallel to the Y-axis direction, and face each other in the Y-axis direction and parallel to the X-axis direction. a pair of a third frame portion and a fourth frame portion extending in the direction of the Y-axis, the drawer portion being drawn out from the second frame portion in the X-axis direction, The first extension portion extends along the second frame portion, the second extension direction is the X-axis direction, and the second extension portion extends along the fourth frame portion. may extend along the

Further, in this case, the drawer portion is pulled out in the X-axis direction from a position closer to the third frame portion in the Y-axis direction than the fourth frame portion in the second frame portion. is desirable. With this configuration, the first extension portion extending in the Y-axis direction can be provided long along the second frame portion. easier to bend.

In the present invention, when the meandering portion meanders once, a spacer is fixed between the meandering portion facing the lead-out portion in the Z-axis direction and the lead-out portion. can do. By doing so, it becomes easy to maintain the shape of the zigzag portion that zigzags in the Z direction in the flexible printed circuit board.

In the present invention, when the meandering portion meanders a plurality of times, a first spacer is fixed between the meandering portion of the meandering portion facing the lead-out portion in the Z-axis direction and the lead-out portion. In addition, a second spacer may be fixed between two meandering portions adjacent to each other in the Z-axis direction in the meandering portion. By doing so, it becomes easy to maintain the shape of the zigzag portion that zigzags in the Z direction in the flexible printed circuit board.

In the present invention, the flexible printed circuit board includes a first flexible printed circuit board and a second flexible printed circuit board that are pulled out from the movable body while being superimposed in the Z-axis direction, and the meandering portion includes two flexible printed circuit boards. It is desirable to meander twice. In this way, the flexible printed circuit board bends when the movable body rotates about the first axis and the second axis, compared to the case where one wide flexible printed circuit board is pulled out from the movable body and routed. easier. Moreover, if the flexible printed circuit board is meandered twice in the meandering portion, it is possible to suppress the difference between the first distance for guiding the first flexible printed circuit board and the second distance for drawing the second flexible printed circuit board in the meandering portion. . Therefore, it is possible to prevent or suppress the formation of wrinkles on one of the two meandering flexible printed circuit boards. Therefore, it is possible to prevent or suppress the flexible printed circuit board from becoming difficult to bend due to wrinkles generated in one flexible printed circuit board.

According to the present invention, the flexible printed circuit board connected to the movable body is routed with its thickness direction oriented in the Z-axis direction, and has the first extension portion and the second extension portion extending in two different directions. and a part. In addition, the first extension portion is pulled out in the first extension direction from a position near the swing center point in the Z-axis direction. Furthermore, since the second extension portion is continuous with the first extension portion, it can be routed at a position close to the swing center point in the Z-axis direction. Therefore, when the movable body rotates about the X-axis and the Y-axis, the first extending portion and the second extending portion are easily bent. Therefore, it is possible to prevent the rotation of the movable body from being hindered by the flexible printed circuit board.

FIG. 4 is a perspective view of an optical unit with a shake correction function; FIG. 4 is a plan view of an optical unit with a shake correction function; FIG. 4 is an exploded perspective view of an optical unit with a shake correction function; FIG. 3 is a cross-sectional view taken along line AA of FIG. 2; FIG. 3 is a cross-sectional view taken along line BB of FIG. 2; FIG. 3 is a cross-sectional view taken along line CC of FIG. 2; It is explanatory drawing of a flexible printed circuit board. FIG. 11 is a perspective view of an optical unit with a shake correction function of a modified example; FIG. 11 is a cross-sectional view of an optical unit with a shake correction function of a modified example;

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 plan view of an optical unit with a shake correction function. FIG. 3 is an exploded perspective view of an optical unit with a shake correction function. 4 is a cross-sectional view taken along line AA of FIG. 2. FIG. 5 is a cross-sectional view taken along line BB of FIG. 2. FIG. FIG. 6 is a cross-sectional view taken along line CC of FIG.

As shown in FIG. 1, an optical unit 1 with a shake correction function has a camera module 3 with a lens 2 . 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 camera module 3 based on the acceleration, angular velocity, amount of shake, etc. detected by a detection means such as a gyroscope in order to avoid tilting of the photographed image.

The optical unit with shake correction function 1 rotates the camera module 3 around a first axis R1 orthogonal to its optical axis L and around a second axis R2 orthogonal to the optical axis L and the first axis R1, Perform shake correction. Thereby, the optical unit 1 with a shake correction function performs pitching correction and yawing correction.

In the following, the optical unit with a shake correction function will be described with the three mutually orthogonal axes being the X axis, the Y axis, and the Z axis, and the optical axis L of the camera module 3 aligned with the Z axis. Also, the directions along the X-axis, Y-axis, and Z-axis are defined as the X-axis direction, the Y-axis direction, and the Z-axis direction. One side of the X-axis direction is the -X direction, and the other side is the +X direction. One side of the Y-axis direction is the -Y direction, and the other side is the +Y direction. Z-axis direction One side of the Z-axis direction is the -Z direction, and the other side is the +Z direction. The Z-axis direction is the optical axis direction along the optical axis L of the lens 2 provided in the camera module 3 . The −Z direction is the image side of the camera module 3 and the +Z direction is the object side of the camera module 3 . 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 (around the optical axis L).

As shown in FIGS. 1 and 2, the optical unit 1 with a shake correction function supports a movable body 5 having a camera module 3 and the movable body 5 so as to be rotatable about a first axis R1 and a second axis R2. and a support body 7 that supports the movable body 5 via the rocking support mechanism 6 . The support body 7 supports the movable body 5 so as to be able to swing about the first axis R1 and the second axis R2 via the swing support mechanism 6 .

The optical unit 1 with a shake correction function also includes a flexible printed circuit board 8 pulled out from the movable body 5 to the outside of the support 7 . The flexible printed circuit board 8 is pulled out from the movable body 5 in the +X direction, meanders in the +Z-axis direction, extends in the +Y direction, and then extends in the -X direction. A connector 9 is fixed to the tip of the flexible printed circuit board 8 . The connector 9 is connected to a substrate (not shown) of optical equipment on which the optical unit 1 with a shake correction function is mounted. Therefore, the tip portion of the flexible printed circuit board 8 is fixed.

Further, as shown in FIG. 3, the optical unit 1 with a shake correcting function includes a shake correcting magnetic drive mechanism 10 (swing drive mechanism) that rotates the movable body 5 around the first axis R1 and the second axis R2. have. 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 . The first shake correction magnetic drive mechanism 11 and the second shake correction magnetic drive mechanism 12 are arranged in the circumferential direction around the optical axis L. As shown in FIG. The optical unit 1 with a shake correction function also includes a flexible printed circuit board 13 that is pulled out in the +Y direction after being routed along the outer peripheral surface of the support 7 .

Here, as shown in FIG. 1, the movable body 5 combines the rotation about the first axis R1 and the rotation about the second axis R2 to obtain a yaw direction YAW about the X axis and a pitch direction YAW about the Y axis. Rotate in direction PITCH.

(movable body)
As shown in FIG. 3, the movable body 5 includes the camera module 3 and a holder 16 surrounding the camera module 3 from the outer peripheral side. The camera module 3 includes a substantially rectangular parallelepiped body portion 17 and a lens barrel portion 18 projecting in the +Z direction from the center of the body portion 17. The lens 2 is accommodated in the lens barrel portion 18. An imaging element 19 is accommodated in the end portion of the main body 17 in the -Z direction. A flexible printed circuit board 8 is pulled out from the end portion of the body portion 17 in the -Z direction. The flexible printed circuit board 8 is electrically connected to the imaging device 19 .

The holder 16 is made of resin. The holder 16 surrounds the body portion 17 of the camera module 3 from the outside in the radial direction. A lens barrel portion 18 of the camera module 3 protrudes in the +Z direction from the holder 16 . The holder 16 has a first sidewall 21 and a second sidewall 22 extending parallel to the Y-axis direction, and a third sidewall 23 and a fourth sidewall 24 extending parallel to the X-axis direction. 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 5 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 28 positioned diagonally in the direction of the second axis R2. Prepare. 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 .

A second magnet 36 is fixed to the first side wall 21 . The second magnet 36 is divided into two in the Z-axis direction. A first magnet 35 is fixed to the fourth side wall 24 . The first magnet 35 is divided into two parts in the Z-axis direction. The flexible printed circuit board 8 passes through a notch 22a (see FIG. 6) provided at the end portion of the second side wall 22 in the -Z direction and is pulled out from the movable body 5 in the +X direction.

(support)
As shown in FIG. 3, the support 7 includes a rectangular frame 30 that radially surrounds the holder 16 of the movable body 5, and a bottom plate 39 that closes the opening of the frame 30 in the -Z direction. The frame 30 includes a first frame portion 31 and a second frame portion 32 facing each other in the X-axis direction, and a third frame portion 33 and a fourth frame portion 34 facing each other in the Y-axis direction. The first frame portion 31 is positioned in the −X direction of the second frame portion 32 . The third frame portion 33 is positioned in the −Y direction of the fourth frame portion 34 .

The first frame portion 31 is provided with a second coil holding hole 31a (see FIG. 7) penetrating in the X-axis direction. A second coil 38 is held in the second coil holding hole. The fourth frame portion 34 is provided with a first coil holding hole (not shown) penetrating in the Y-axis direction. A first coil 37 is held in the first coil holding hole. Each of the first coil 37 and the second coil 38 is an oval air-core coil elongated in the circumferential direction. Here, the first coil 37 and the second coil 38 are electrically connected to the flexible printed circuit board 13 routed along the outer surface of the frame 30 .

As shown in FIGS. 3 and 6, the second frame portion 32 is provided with a notch portion 32a. The flexible printed circuit board 8 pulled out from the movable body 5 is pulled out in the +X direction of the frame 30 through the notch 32a.

(Swing support mechanism)
The swing support mechanism 6 includes a gimbal frame 40 and a gimbal frame 4 as shown in FIG.
0 and the support 7 rotatably around the first axis R1, and a second connection mechanism 42 rotatably connecting the gimbal frame 40 and the movable body 5 around the second axis R2. And prepare. The swing support mechanism 6 connects the movable body 5 and the support body 7 on the inner peripheral side of the frame body 30 .

The gimbal frame 40 is made of a metal leaf spring. The gimbal frame 40 includes a gimbal frame main body 45 having an opening 45a through which the lens barrel 18 of the movable body 5 passes in the Z-axis direction. Further, as shown in FIG. 3, the gimbal frame 40 includes a pair of first gimbal frame extending portions 46 that protrude from the gimbal frame body portion 45 toward both sides in the direction of the first axis R1 and extend in the -Z direction; A pair of second gimbal frame extending portions 47 projecting from the gimbal frame body portion 45 toward both sides in the direction of the second axis R2 and extending in the -Z direction. The gimbal frame body portion 45 is positioned in the +Z direction of the holder 16 and overlaps the body portion 17 of the camera module 3 when viewed from the Z-axis direction. As shown in FIGS. 4 and 5 , the pair of first gimbal frame extension portions 46 and the pair of second gimbal frame extension portions 47 are positioned on the outer peripheral side of the holder 16 . Also, the pair of first gimbal frame extension portions 46 and the pair of second gimbal frame extension portions 47 are positioned on the inner peripheral side of the frame 30 .

As shown in FIG. 4, the first connection mechanism 41 is fixed to the -Z direction end portions of the pair of first gimbal frame extension portions 46 of the gimbal frame 40, and extends radially outward along the first axis R1. the first spherical body 51 projecting outward, the inside corner portion between the first frame portion 31 and the third frame portion 33 of the frame 30, and the space between the third frame portion 33 and the fourth frame portion 34 of the frame 30 and a metal first receiving member 52 fixed to each of the inner corners of the . Each first receiving member 52 has a first concave curved surface 52a that is recessed radially outward on the first axis R1. As shown in FIG. 5, the second connection mechanism 42 is fixed to each of the -Z direction end portions of the pair of second gimbal frame extending portions 47 of the gimbal frame 40, and extends radially inward on the second axis R2. and a second receiving member 54 fixed to the outer surface of the fifth side wall 25 and the outer side surface of the sixth side wall 26 of the holder 16, respectively. Each second receiving member 54 has a second concave curved surface 54a that is recessed radially inward on the second axis R2.

When the movable body 5 is supported by the support body 7 via the swing support mechanism 6, as shown in FIG. The frame 40 is inserted to bring the first spherical body 51 into point contact with the first concave curved surface 52a on the first axis R1. As a result, the first connection mechanism 41 is configured, so that the gimbal frame 40 can swing about the first axis R1 with respect to the support 7 . Further, when the movable body 5 is supported by the support body 7 via the swing support mechanism 6, as shown in FIG. A pair of the second gimbal frame extending portions 47 of the gimbal frame 40 are arranged at the position of the second gimbal frame 40, and the second spherical body 53 is brought into point contact with the second concave curved surface 54a on the second axis R2. As a result, the second connection mechanism 42 is configured, so that the gimbal frame 40 can swing about the second axis R2 with respect to the support 7. As shown in FIG. Therefore, the rocking support mechanism 6 connects the movable body 5 to the support body 7 in a rotatable state about the first axis R1 and the second axis.

Here, as shown in FIGS. 4, 5, and 6, the swing center point P at which the movable body 5 rotates about the X axis and the Y axis is the optical axis L, the first axis R1, and the second axis. It is the intersection point where R2 intersects. Also, the swing center point P is the intersection point where the Z-axis, the Y-axis, and the Z-axis intersect. The swing center point P is positioned inside the movable body 5 .

(Magnetic drive mechanism for shake correction)
When the movable body 5 is supported by the support 7 via the swing support mechanism 6, as shown in FIG. 2 coils 38 face each other with a gap in the X-axis direction. The second magnet 36 and the second coil 38 are
A second vibration correction magnetic drive mechanism 12 is configured. As can be seen from FIG. 3, the first magnet 35 fixed to the fourth side wall 24 of the holder 16 and the first coil 37 fixed to the frame 30 of the support 7 are spaced apart in the Y-axis direction. to face each other. The first magnet 35 and the first coil 37 constitute the first vibration correction magnetic drive mechanism 11 .

In the anti-shake magnetic drive mechanism 10 , power is supplied to the first coil 37 to rotate the movable body 5 around the X axis. Further, the movable body is rotated around the Y-axis by supplying power to the second coil 38 . The shake correction magnetic drive mechanism 10 rotates the movable body 5 about the X axis by the first shake correction magnetic drive mechanism 11 and rotates the movable body 5 about the Y 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.

(flexible printed circuit board)
FIG. 7 is an explanatory diagram of a flexible printed circuit board. As shown in FIG. 1, the flexible printed circuit board 8 pulled out from the movable body 5 is routed with its thickness direction facing the Z-axis direction. As shown in FIG. 6, the flexible printed circuit board 8 is pulled out in the +X direction from the end portion of the movable body 5 in the -Z direction, and extends to the outside of the frame 30 in the radial direction through the notch 32a of the frame 30. An extending drawer 60 is provided. As shown in FIG. 2, in this example, the drawer portion 60 is drawn out in the +X direction from the -Y direction side of the end portion of the camera module 3 in the -Z direction. Therefore, in the second frame portion 32, the drawer portion 60 is pulled out in the +X direction from a position closer to the third frame portion 33 than to the fourth frame portion 34 in the Y-axis direction.

In addition, the flexible printed circuit board 8 includes a meandering portion 61 that meanders so as to overlap with the lead portion 60 when viewed in the Z-axis direction. The meandering portion 61 extends from the lead-out portion 60 toward the swing center point P (+Z direction) in the Z-axis direction. In this example, as shown in FIGS. 6 and 7, the meandering portion 61 meanders twice. Therefore, the meandering portion 61 consists of a first curved portion 61a that curves in the -X direction toward the +Z direction from the +X direction end of the lead portion 60, and an end portion of the first curved portion 61a opposite to the lead portion 60. a first extension portion 61b extending in the -X direction from the first extension portion 61b and facing the drawer portion 60; , and a second extension portion 61d extending in the +X direction from the end portion of the second curved portion 61c opposite to the first extension portion 61b and facing the first extension portion 61b. The second extended portion 61d is the final meandering portion located on the opposite side of the drawn-out portion 60 in the Z-axis direction in the meandering portion 61 . As shown in FIG. 6, the final meandering portion (second extending portion 61d) is positioned on the XY plane including the X-axis and the Y-axis.

Further, the flexible printed circuit board 8 has a first extension portion 62 extending in a first extension direction and a second extension portion 62 extending in a second extension direction different from the first extension direction toward the leading end from the meandering portion 61 . and an extension portion 63 . The first extending portion 62 continues to the final meandering portion (second extending portion 61d). The second extension 63 is continuous with the first extension 62 . In this example, the first extending direction is the Y-axis direction. Therefore, as shown in FIG. 2 , the first extension 62 extends along the second frame 32 of the frame 30 . Also, the second extending direction in which the second extending portion 63 extends is the -X direction. Therefore, the second extension portion 63 extends along the fourth frame portion 34 of the frame body 30 . A connector 9 is fixed to the tip of the second extension portion 63 . The second extended portion 63 is connected via the connector 9 to a substrate (not shown) of an optical device on which the optical unit 1 with a shake correction function is mounted.

Here, as shown in FIGS. 6 and 7, a first spacer 66 is fixed between the drawn portion 60 and the first extending portion 61b of the meandering portion 61. As shown in FIGS. A second spacer 67 is fixed between the first extending portion 61b and the second extending portion 61d adjacent to each other in the Z-axis direction in the meandering portion 61 . The first spacer 66 and the second spacer 67 are the same member. Therefore, the thickness dimension in the Z-axis direction of the first spacer 66 and the thickness dimension in the Z-axis direction of the second spacer 67 are the same. Therefore, in the meandering portion 61, the meandering intervals are the same.

In this example, the flexible printed circuit board 8 includes a first flexible printed circuit board 71 and a second flexible printed circuit board 72 that are pulled out in the +X direction from the camera module 3 while being superimposed in the Z-axis direction. The first flexible printed circuit board 71 is positioned in the −Z direction of the second flexible printed circuit board 72 at a position where it can be pulled out from the camera module 3 . Therefore, in the lead-out portion 60, the first flexible printed circuit board 71 is positioned in the -Z direction of the second flexible printed circuit board 72. As shown in FIG. The first flexible printed circuit board 71 is located on the outer peripheral side of the second flexible printed circuit board 72 in the first curved portion 61a. The first flexible printed circuit board 71 is located in the +Z direction of the second flexible printed circuit board 72 in the first extended portion 61b. The first flexible printed circuit board 71 is located on the inner peripheral side of the second flexible printed circuit board 72 in the second curved portion 61c. The first flexible printed circuit board 71 is positioned in the -Z direction of the second flexible printed circuit board 72 at the second extended portion 61d (at the second extended portion 61d). In the first extension portion 62 and the second extension portion 63 , the first flexible printed circuit board 71 is positioned in the −Z direction of the second flexible printed circuit board 72 .

Therefore, the first spacer 66 is fixed between the second flexible printed circuit board 72 of the lead-out portion 60 and the first flexible printed circuit board 71 of the first extended portion 61b. The second spacer 67 is fixed between the first flexible printed circuit board 71 of the first extended portion 61b and the second flexible printed circuit board 72 of the second extended portion 61d.

Here, as shown in FIG. 7, in this example in which the flexible printed circuit board 8 includes two flexible printed circuit boards 71 and 72, the width of the first spacer 66 in the Y-axis direction and the width of the second spacer 67 in the Y-axis direction are The width is wider than the width of the meandering portion 61 in the flexible printed circuit board 8 in the Y-axis direction. As a result, both ends of the first spacer 66 in the Y-axis direction protrude from the meandering portion 61 in the Y-axis direction, and both ends of the second spacer 67 in the Y-axis direction protrude from the meandering portion 61 in the Y-axis direction. Also, since the protruding portion of the first spacer 66 protruding in the Y-axis direction from the meandering portion 61 and the protruding portion of the second spacer 67 protruding in the Y-axis direction from the meandering portion face each other in the Z direction, these An adhesive is filled in between to form a first adhesive layer 75 . The first adhesive layer 75 prevents the first spacer 66 and the second spacer 67 from separating in the Z-axis direction.

Also, a second adhesive layer 76 is provided that reaches the first flexible printed circuit board 71 positioned in the -Z direction in the lead-out portion 60 from the protruding portion of the first spacer 66 that protrudes in the Y-axis direction from the meandering portion 61 . The second adhesive layer 76 prevents the first flexible printed circuit board 71 from separating from the second flexible printed circuit board 72 in the -Z direction at the lead-out portion 60 . Furthermore, a third adhesive layer 77 is provided that reaches the first flexible printed circuit board 71 located in the +Z direction on the second extending portion 61d from the protruding portion of the second spacer 67 that protrudes in the Y-axis direction from the meandering portion. The third adhesive layer 77 prevents the second flexible printed circuit board 72 from separating from the first flexible printed circuit board 71 in the +Z direction at the second extended portion 61d.

(Effect)
According to this example, the flexible printed circuit board 8 pulled out from the movable body 5 is routed with its thickness direction directed in the Z-axis direction, and the first extension portion 62 and the second extension portion 62 extend in two different directions. 2 extending portion 63 . Therefore, when the movable body 5 rotates around the X-axis and the Y-axis which are perpendicular to the Z-axis, the thickness direction of the flexible printed circuit board 8 is directed in the direction perpendicular to the Z-axis, compared to the case where it is routed. Therefore, the first extension portion 62 and the second extension portion 63 are easily bent.

Further, the flexible printed circuit board 8 is pulled out in the X-axis direction from a position different from the swing center point P of the movable body 5 in the Z-axis direction, and then meanders in the Z-axis direction to include the X-axis and the Y-axis. It reaches the XY plane and then extends in the Y and X directions. As a result, the first extending portion 62 of the flexible printed circuit board 8 is pulled out in the Y-axis direction from a position near the swing center point P in the Z-axis direction. Furthermore, since the second extension portion 63 of the flexible printed circuit board 8 is continuous with the first extension portion 62, it can be routed at a position close to the swing center point P in the Z-axis direction. Here, if the first extending portion 62 and the second extending portion 63 are routed at a position close to the swing center point P in the Z-axis direction, they are separated from the swing center point P in the Z-axis direction. The flexible printed circuit board 8 is more likely to bend when the movable body 5 rotates around the X-axis and the Y-axis, compared to the case where the flexible printed circuit board 8 is routed around the position where the flexible printed circuit board 8 is positioned. Therefore, it is possible to prevent the flexible printed circuit board 8 from hindering the rotation of the movable body 5 .

Furthermore, in this example, the flexible printed circuit board 8 is meandering at the meandering portion 61 and is not bent at a specific angle. Therefore, it is not necessary to bend the flexible printed circuit board 8 at a predetermined angle when assembling the optical unit with a shake correction function. Therefore, it becomes easy to assemble the optical unit with a shake correction function.

In this example, the support 7 includes a frame 30 that surrounds the movable body 5 from the outside in the radial direction. The frame body 30 includes a first frame portion 31 and a second frame portion 32 that face each other in the X-axis direction and extend parallel to the Y-axis direction, and a pair of third frame portions that face each other in the Y-axis direction and extend in parallel to the X-axis direction. A frame portion 33 and a fourth frame portion 34 are provided. The drawer portion 60 is drawn out from the second frame portion 32 in the X-axis direction. The first extension portion 62 extends in the Y-axis direction along the second frame portion 32 . The second extension portion 63 extends in the X-axis direction along the fourth frame portion 34 . As a result, the flexible printed circuit board 8 can be routed around in the vicinity of the support 7, so that it is easy to suppress an increase in the area occupied by the optical unit with a shake correction function when viewed in the Z-axis direction.

In this example, the drawer portion 60 is drawn out in the X-axis direction from a position closer to the third frame portion 33 than the fourth frame portion 34 in the Y-axis direction in the second frame portion 32 . As a result, the first extension portion 62 extending in the Y-axis direction along the second frame portion 32 can be provided long, so that when the movable body 5 rotates about the X-axis and the Y-axis, the flexible printed circuit board 8 is is easier to bend.

Furthermore, a first spacer 66 is fixed between the drawn-out portion 60 and a first extending portion 61b facing the drawn-out portion 60 in the Z-axis direction in the meandering portion 61 . A second spacer 67 is fixed between the first extending portion 61b and the second extending portion 61d adjacent to each other in the Z-axis direction in the meandering portion 61 . Therefore, it becomes easy to maintain the shape of the meandering portion 61 in the flexible printed circuit board 8 .

Here, in this example, as the flexible printed circuit board 8, a first flexible printed circuit board 71 and a second flexible printed circuit board 72 pulled out from the movable body 5 in a state of being superimposed in the Z-axis direction are provided. Therefore, compared to the case where one wide flexible printed circuit board is pulled out from the movable body 5 and routed around, the flexible printed circuit board 8 does not move when the movable body 5 rotates around the first axis R1 and the second axis R2. It becomes easy to bend.

Further, if the flexible printed circuit board 8 is meandered twice at the meandering portion 61, the first flexible printed circuit board 71 is positioned outside the second flexible printed circuit board 72 at the first curved portion 61a of the meandering portion 61, and the second curved portion The second flexible printed circuit board 72 is located outside the first flexible printed circuit board 71 in the portion 61c. Accordingly, it is possible to suppress the difference between the first distance for routing the first flexible printed circuit board 71 and the second distance for routing the second flexible print in the meandering portion 61 . Therefore, it is possible to prevent or suppress the formation of wrinkles on one of the two meandering flexible printed circuit boards 71 and 72 . Therefore, it is possible to prevent or suppress the flexible printed circuit board 8 from becoming difficult to bend due to wrinkles generated in one of the flexible printed circuit boards 71 and 72 .

(Modification)
When one flexible printed circuit board 8 is pulled out from the movable body 5, the meandering portion 61 may meander once or twice or more. FIG. 8 is a perspective view of a modified optical unit with a shake correction function. FIG. 9 is a cross-sectional view of a modified optical unit with a shake correction function taken along a plane including the optical axis and the X axis. In addition, in the optical unit 1 with a shake correction function of the modified example, one flexible printed circuit board 8A is pulled out from the movable body 5. As shown in FIG. Further, the optical unit with a shake correction function of the modified example differs from the above example in the form of routing of the flexible printed circuit board 8, but the rest of the configuration is the same. Therefore, the same reference numerals are assigned to the same configurations, and the form of routing of the flexible printed circuit board 8A will be described.

As shown in FIG. 8, also in the optical unit 1A with a shake correction function of this example, the flexible printed circuit board 8A is routed with the thickness direction directed to the Z-axis direction. As shown in FIG. 9, the flexible printed circuit board 8 is pulled out in the +X direction from the end portion of the movable body 5 in the -Z direction, and extends to the outside of the frame 30 in the radial direction through the notch 32a of the frame 30. An extending drawer 60 is provided. As shown in FIG. 8, the drawer portion 60 is pulled out from the second frame portion 32 of the holder 16 in the +X direction from a position closer to the third frame portion 33 than to the fourth frame portion 34 in the Y-axis direction. The flexible printed board 8A also includes a meandering portion 61 that meanders once so as to overlap with the lead portion 60 when viewed from the Z-axis direction. The meandering portion 61 extends in the Z-axis direction from the lead-out portion 60 toward the swing center point P (+Z direction). Therefore, as shown in FIG. 9, the meandering portion 61 includes a first curved portion 61a that curves in the -X direction from the +X direction end of the lead portion 60 toward the +Z direction, and the lead portion 60 of the first curved portion 61a. and a first extending portion 61b extending in the −X direction from the end portion opposite to and facing the drawer portion 60 . The first extended portion 61b is the final meandering portion located on the opposite side of the meandering portion 61 from the lead-out portion 60 in the Z-axis direction. As shown in FIG. 9, the final meandering portion (second extending portion 61b) is positioned on the XY plane including the X-axis and the Y-axis.

Further, as shown in FIG. 8, the flexible printed circuit board 8A has a first extending portion 62 extending in the first extending direction and a second extending portion 62 extending in the first extending direction from the meandering portion 61 toward the distal end. and a second extending portion 63 extending in the extending direction. The first extending portion 62 continues to the +Y-direction edge of the final meandering portion (second extending portion 61b). The second extension 63 is continuous with the first extension 62 . The first extending direction is the Y-axis direction. Therefore, the first extending portion 62 extends along the second frame portion 32 at a position adjacent to the second frame portion 32 of the frame body 30 . Also, the second extending direction in which the second extending portion 63 extends is the -X direction. Therefore, the second extension portion 63 extends along the fourth frame portion 34 of the frame body 30 . A connector 9 is fixed to the tip of the second extension portion 63 . Here, a first spacer 66 is fixed with an adhesive between the first extending portion 61b facing the lead portion 60 in the Z-axis direction in the meandering portion 61 and the lead portion 60 .

In this example as well, the flexible printed circuit board 8A pulled out from the movable body 5 is routed with its thickness direction oriented in the Z-axis direction, and the first extension portion 62 and the second extension portion 62 extend in two different directions. and an extension portion 63 . Therefore, when the movable body 5 rotates around the X-axis and the Y-axis which are perpendicular to the Z-axis, the flexible printed circuit board 8A is drawn around with its thickness direction perpendicular to the Z-axis. Therefore, the first extension portion 62 and the second extension portion 63 are easily bent. 0

Further, the flexible printed circuit board 8A is pulled out in the X-axis direction from a position different from the swing center point P of the movable body 5 in the Z-axis direction, and then meanders in the Z-axis direction to include the X-axis and the Y-axis. It reaches the XY plane and then extends in the Y and X directions. As a result, the first extension portion 62 of the flexible printed circuit board 8A is pulled out in the Y-axis direction from a position near the swing center point P in the Z-axis direction. Furthermore, since the second extension portion 63 of the flexible printed circuit board 8A is continuous with the first extension portion 62, it can be routed at a position close to the swing center point P in the Z-axis direction. Therefore, it is possible to prevent the rotation of the movable body 5 from being hindered by the flexible printed circuit board 8A.

REFERENCE SIGNS LIST 1 optical unit with shake correction function 2 lens 3 camera module 5 movable body 6 rocking support mechanism 7 support 8, 8A flexible printed circuit board 9 connector 10 shake Correction magnetic drive mechanism 11 First vibration correction magnetic drive mechanism 12 Second vibration correction magnetic drive mechanism 13 Flexible printed circuit board 16 Holder 17 Main body 18 Lens barrel 19 21... 1st side wall 22... 2nd side wall 23... 3rd side wall 24... 4th side wall 25... 5th side wall 26... 6th side wall 27... 7th side wall 28... 8th side wall Side wall 30 Frame 31 First frame 32 Second frame 32a Notch 33 Third frame 34 Fourth frame 35 First magnet 36 Third 2 magnets 37 first coil 38 second coil 40 gimbal frame 41 first connection mechanism 42 second connection mechanism 45 gimbal frame body 45 a opening 46 first Gimbal frame extension part 47 Second gimbal frame extension part 51 First sphere 52 First receiving member First concave curved surface 53 Second sphere 54 Second receiving member Second concave Curved surface 60 Drawer portion 61 Meandering portion 61a First curved portion 61b First extended portion 61c Second curved portion 61d Second extended portion 62 First extended portion 63... Second extension part 66... First spacer 67... Second spacer 71... First flexible printed circuit board 72... Second flexible printed circuit board 75... First adhesive layer 76... Second Adhesive layer 77 Third adhesive layer L Optical axis R1 First axis R2 Second axis

Claims (7)

a movable body having a camera module;
a support;
The movable body is swung about the X-axis with respect to the support when the optical axis of the camera module is aligned with the Z-axis, with the three axes orthogonal to each other being the X-axis, the Y-axis, and the Z-axis. a rocking support mechanism that supports the movable body and rockably supports the movable body about the Y axis;
a swing driving mechanism for swinging the movable body around the X-axis and around the Y-axis;
a flexible printed circuit board pulled out from the movable body,
a swing center point of the movable body where the X-axis, the Y-axis, and the Z-axis intersect is located inside the movable body;
The flexible printed circuit board is routed with its thickness direction directed in the Z-axis direction, and is arranged at a position different from the swing center point of the movable body in the Z-axis direction in order from the movable body toward the distal end. and a drawer portion drawn out in the X-axis direction from the base, and meanders once or more in the Z-axis direction toward the swing center point so as to overlap the drawer portion when viewed from the Z-axis direction. a meandering portion; a first extending portion extending in a first extending direction different from the X-axis direction; and a second extending portion extending in a second extending direction different from the first extending direction. ,
An optical unit with a shake correcting function, wherein a final meandering portion of the meandering portion where the first extending portion is continuous overlaps an XY plane including the X-axis and the Y-axis. The support includes a frame that surrounds the movable body from the outside in the radial direction,
2. The camera with a shake correction function according to claim 1, wherein the first extending portion and the second extending portion are routed along the frame outside in the radial direction of the frame. optical unit. The frame body includes a first frame portion and a second frame portion that face each other in the X-axis direction and extend parallel to the Y-axis direction, and a pair of frame members that face each other in the Y-axis direction and extend in parallel to the X-axis direction. A third frame and a fourth frame,
The drawing portion is drawn out from the second frame portion in the X-axis direction,
The first extending direction is the Y-axis direction,
The first extension portion extends along the second frame portion,
The second extending direction is the X-axis direction,
3. The optical unit with a shake correction function according to claim 2, wherein the second extension extends along the fourth frame. 3. The drawer portion is drawn out in the X-axis direction from a position closer to the third frame portion than to the fourth frame portion in the Y-axis direction in the second frame portion. 4. The optical unit with a shake correction function according to 3. When the meandering portion meanders once, a spacer is fixed between the meandering portion facing the drawn-out portion in the Z-axis direction and the drawn-out portion. The optical unit with a shake correction function according to any one of claims 1 to 4. When the meandering portion meanders a plurality of times, a first spacer is fixed between the meandering portion facing the drawn portion in the Z-axis direction and the drawn portion, 5. The shake correction according to any one of claims 1 to 4, wherein a second spacer is fixed between two meandering portions adjacent to each other in the Z-axis direction in the meandering portion. Optical unit with function. As the flexible printed circuit board, a first flexible printed circuit board and a second flexible printed circuit board pulled out from the movable body in a state of being superimposed in the Z-axis direction,
7. The optical unit with a shake correction function according to claim 6, wherein the meandering portion meanders twice.

Images