Optical unit with shake correction function

Abstract

To reduce spring constant of a flexible printed circuit board when a movable body oscillates or rotates and to reduce property variations due to variations in bending shape.SOLUTION: An optical unit 1 with shake correction function corrects shake by rotating a movable body 10 around an optical axis L, an X-axis and a Y-axis. A flexible printed circuit board 6 connected to the movable body 10 includes: a first drawer part 6A drawn from the movable body 10 in a +X direction; a bent part 6B bent from the first drawer part 6A in a +Z direction and rectangularly drawn while erected in a Z-axis direction; and a second drawer part 6C bent from an end of the bent part 6B in a -Z direction to the +X direction. The bent part 6B includes: a first portion 610 extending from the first drawer part 6A in a -Y direction; a second portion 620 extending from the first portion 610 in the +X direction; and a third portion 630 extending from the second portion 620 in a +Y direction.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to an optical unit with a shake correction function that corrects shake by rotating a camera module around an optical axis. [Background technology]

[0002] Among optical units mounted on mobile terminals and mobile objects, some have a mechanism for correcting shake by swinging or rotating a movable body equipped with a camera module in order to suppress distortion of captured images when the mobile terminal or mobile object is moving. Patent Document 1 describes this type of optical unit with shake correction function.

[0003] The optical unit with shake correction function of Patent Document 1 has a movable body equipped with an optical module, a fixed body, and a swing support mechanism that supports the movable body rotatably relative to the fixed body around a first axis (X-axis) that intersects with the optical axis and around a second axis (Y-axis) that intersects with the optical axis and the first axis. A flexible printed circuit board connected to the optical module is drawn out from the movable body.

[0004] In an optical unit with a shake correction function, the movable body swings while bending the flexible printed circuit board. At this time, the springiness of the flexible printed circuit board may hinder the movement of the movable body, and the load for swinging the movable body may increase. In Patent Document 1, the flexible printed circuit board is folded back multiple times so that it overlaps when viewed from the optical axis direction in order to make it easier to bend. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2020-86369 A Summary of the Invention [Problem to be solved by the invention]

[0006] In Patent Document 1, the spring constant is reduced by folding the flexible printed circuit board multiple times. However, if the folding shape is complex or the number of foldings is large, a dedicated jig may be required. In addition, the number of steps required for the folding work increases, and the variation in the folding shape accumulates, making the characteristics of the flexible printed circuit board unstable. Furthermore, if the number of foldings is large, there is a problem that the shape after folding becomes large.

[0007] In view of the above, an object of the present invention is to reduce the spring constant of a flexible printed circuit board when a movable body swings or rotates, and to reduce the variation in characteristics caused by the variation in the bending shape. [Means for solving the problem]

[0008] In order to solve the above problems, the optical unit with shake correction function of the present invention has a movable body equipped with a camera module, a support mechanism that supports the movable body rotatably around a first axis that intersects with an optical axis of the camera module and supports the movable body rotatably around a second axis that intersects with the optical axis and intersects with the first axis, a fixed body that supports the movable body via the support mechanism, and a flexible printed circuit board connected to the movable body, wherein when a direction that intersects with the optical axis is defined as a first direction and a direction that intersects with the optical axis direction and intersects with the first direction is defined as a second direction, the flexible printed circuit board has a first draw-out portion drawn out from the movable body to one side in the first direction, a first portion bent from the first draw-out portion to one side in the optical axis direction and extending to one side in the second direction, the bending portion having a second portion bent to one side in the first direction and extending to one side in the first direction, and a third portion bent from the second portion to the other side in the second direction and extending to the other side in the second direction, and a second pull-out portion bent from an end of one side or the other of the third portion in the optical axis direction to one side in the first direction and pulled out from the fixed body.

[0009] According to the present invention, the flexible printed circuit board connected to the movable body is bent after being drawn out from the movable body so as to extend in the optical axis direction, and is bent twice at approximately right angles in a space adjacent to the movable body in a position standing up approximately perpendicular to the installation surface of the movable body, and is drawn around in a rectangular shape. In this way, when the movable body rotates in a rolling direction around the optical axis, the entire bent portion of the flexible printed circuit board is easily bent, so the spring constant is small. In addition, when the movable body deforms in a yawing direction around a first axis intersecting the optical axis, and when the movable body deforms in a pitching direction around a second axis intersecting the optical axis and the first axis, the first and third portions are easily bent, so the spring constant is small. Furthermore, since the number of times the flexible printed circuit board is bent is not large, the variation in characteristics caused by the variation in the bending shape can be reduced. In addition, since the bending process is easy, the productivity can be increased.

[0010] In the present invention, the first extension part is preferably disposed at a position shifted toward the other end of the movable body in the second direction. In this way, the length of the freely bending part in the first part can be made longer than when the first extension part is extended from the center of the movable body in the second direction. Therefore, the spring constant of the flexible printed circuit board can be made smaller.

[0011] In the present invention, the second drawn-out portion is preferably disposed on the other side of the first drawn-out portion in the second direction, thereby making it possible to increase the length of the freely bending portion of the third portion and therefore reduce the spring constant of the flexible printed circuit board.

[0012] In the present invention, a shape-retaining member is provided for retaining the flexible printed circuit board in a bent shape, and the shape-retaining member fixed to the bent portion connecting the first drawer portion and the first portion is preferably disposed at a position offset toward the other end of the first drawer portion in the second direction. In this way, the flexible printed circuit board can be maintained in a shape that is easily bent by the shape-retaining member. Also, the shape-retaining member can be disposed offset toward the end of the first portion, and the length of the portion that can be freely bent can be increased. Therefore, the spring constant of the flexible printed circuit board can be reduced.

[0013] In the present invention, the shape-retaining member fixed to the bent portion connecting the third portion and the second drawer portion is preferably disposed at a position offset toward the other end of the second drawer portion in the second direction. In this way, the shape-retaining member can be disposed offset toward the end of the third portion, and the length of the freely bending portion can be increased. Therefore, the spring constant of the flexible printed circuit board can be reduced.

[0014] In the present invention, the first lead-out portion and the second lead-out portion are formed of one flexible substrate, the bent portion is formed by stacking a plurality of the flexible substrates, a first joint portion is provided at an end of the first portion on the other side in the second direction, in which the flexible substrates are joined with a reinforcing plate sandwiched therebetween, the first joint portion including a first folded portion that connects the flexible substrates joined via the reinforcing plate in a shape folded back in the optical axis direction, and a second joint portion is provided at an end of the third portion on the other side in the second direction, in which the flexible substrates are joined with the reinforcing plate sandwiched therebetween, the second joint portion including a first folded portion that connects the flexible substrates joined via the reinforcing plate in a shape folded back in the optical axis direction, It is preferable to have a second folded portion that is connected in a shape folded back in the optical axis direction. In this way, the flexible substrate branched into a plurality of branched portions can be folded back and routed in a state in which the branched portions are overlapped. Therefore, even when a flexible printed circuit board with a large area is required, the height of the bent portion in the optical axis direction can be reduced by branching into a plurality of portions. This allows the height of the arrangement space of the flexible printed circuit board in the optical axis direction to be reduced. In addition, the overlapped flexible substrates can be bent in a state where they are separated from each other, except for the joints joined via the reinforcing plate. Therefore, an increase in the spring constant of the flexible printed circuit board can be avoided.

[0015] In the present invention, the plurality of flexible substrates include a first flexible substrate, a second flexible substrate overlapping one side of the first flexible substrate in the first direction in the first portion, and a third flexible substrate overlapping one side of the second flexible substrate in the first portion in the first direction, and the first joint portion includes the first folded portion that connects the first flexible substrate and the second flexible substrate in a shape folded back from one side to the other side in the optical axis direction, and a third folded portion that connects the second flexible substrate and the third flexible substrate in a shape folded back from the other side to one side in the optical axis direction, and the third folded portion is preferably narrower in width in the second direction than the first folded portion. In this way, in the first portion of the bending portion, the flexible substrate arranged on the inner periphery side of the three stacked and bent flexible substrates has a shorter portion connected to the folded portion and a longer portion that is freely bent without being restrained by the folded portion. Therefore, it is possible to suppress an increase in the spring constant caused by the flexible substrate arranged on the inner periphery side having to deform in a narrower space.

[0016] In the present invention, the second joint portion includes the second folded portion that connects the first flexible substrate and the second flexible substrate in a folded shape from one side to the other side in the optical axis direction, and a fourth folded portion that connects the second flexible substrate and the third flexible substrate in a folded shape from the other side to one side in the optical axis direction, and the fourth folded portion is preferably narrower in the second direction than the second folded portion. In this way, in the third portion of the bending portion, the flexible substrate arranged on the inner side of the three stacked and bent flexible substrates has a shorter portion connected to the folded portion and a longer portion that is freely bent without being restrained by the folded portion. Therefore, it is possible to suppress an increase in the spring constant due to the flexible substrate arranged on the inner side having to deform in a narrower space.

[0017] In the present invention, the reinforcing plate disposed at the first joint and the reinforcing plate disposed at the second joint are preferably disposed at a position shifted toward the other end of the flexible substrate in the second direction between the reinforcing plate. In this way, the length of the portion that is not restricted in movement by the reinforcing plate and that can bend freely can be increased. Therefore, the spring constant of the flexible printed circuit board can be reduced.

[0018] In the present invention, the reinforcing plate includes a first reinforcing plate disposed between the first flexible substrate and the second flexible substrate, and a third reinforcing plate disposed between the second flexible substrate and the third flexible substrate at the first joint, and the third reinforcing plate is preferably narrower in the second direction than the first reinforcing plate. In this way, in the first portion of the bending portion, the flexible substrate disposed on the inner side of the three stacked and bent flexible substrates has a shorter portion restrained by the reinforcing plate and a longer portion that bends freely. Therefore, it is possible to suppress an increase in the spring constant caused by the flexible substrate disposed on the inner side having to deform in a narrower space.

[0019] In the present invention, the reinforcing plate includes a second reinforcing plate disposed between the first flexible substrate and the second flexible substrate, and a fourth reinforcing plate disposed between the second flexible substrate and the third flexible substrate, in the second joint portion, and the fourth reinforcing plate is disposed in front of the second reinforcing plate. It is preferable that the width in the second direction is narrow. In this way, in the third portion of the bending section, the flexible substrate arranged on the inner side of the three laminated and bent flexible substrates has a shorter portion restrained by the reinforcing plate and a longer portion that bends freely. Therefore, it is possible to suppress an increase in the spring constant caused by the flexible substrate arranged on the inner side having to deform in a narrower space.

[0020] In the present invention, the fixed body includes a wiring housing portion disposed on one side of the movable body in the first direction, the wiring housing portion includes a first wall portion and a second wall portion that face each other in the second direction and extend in the first direction, and a third wall portion that connects an end of the first wall portion on one side in the first direction to an end of the second wall portion on one side in the first direction and extends in the second direction, the bent portion extends along the inner surfaces of the first wall portion and the third wall portion, and the third wall portion preferably includes a wiring outlet through which the second draw-out portion passes and a board fixing portion that fixes the second draw-out portion. In this way, a space in which the flexible printed circuit board is bent can be secured inside the wiring housing portion. In addition, since the flexible printed circuit board can be fixed to the wiring housing portion, it is possible to avoid an external load being applied to the connection portion between the movable body 10 and the flexible printed circuit board.

[0021] In the present invention, the support mechanism can be configured to include a rotational support mechanism that supports the movable body rotatably around the optical axis of the camera module, and a gimbal mechanism that rotatably supports the movable body and the rotational support mechanism around a first axis that intersects the optical axis, and rotatably supports the movable body and the rotational support mechanism around a second axis that intersects the optical axis and also intersects the first axis. Effect of the Invention

[0022] According to the present invention, the flexible printed circuit board connected to the movable body is bent after being drawn out from the movable body so as to extend in the optical axis direction, and is bent twice at approximately right angles in a space adjacent to the movable body in a position standing up approximately perpendicular to the installation surface of the movable body, and is drawn around in a rectangular shape. In this way, when the movable body rotates in the roll direction around the optical axis, the entire bent portion of the flexible printed circuit board is easily bent, so the spring constant is small. In addition, when the movable body deforms in the yawing direction around the first axis intersecting the optical axis, and when the movable body deforms in the pitching direction around the second axis intersecting the optical axis and the first axis, the first and third portions are easily bent, so the spring constant is small. Furthermore, since the number of times the flexible printed circuit board is bent is not large, the variation in characteristics caused by the variation in the bending shape can be reduced. In addition, since the bending process is easy, the productivity can be increased. [Brief description of the drawings]

[0023] [Figure 1] 1 is a perspective view of an optical unit with a shake correction function to which the present invention is applied. [Diagram 2] FIG. 2 is an exploded perspective view of the optical unit with shake correction function shown in FIG. [Diagram 3] FIG. 2 is a plan view of the optical unit with shake correction function with the cover removed, as viewed from the subject side. [Figure 4] 4 is a cross-sectional view of the optical unit with shake correction function taken along line AA in FIG. 3. [Diagram 5] 4 is a cross-sectional view of the optical unit with shake correction function taken along the line BB in FIG. 3. [Figure 6] FIG. 2 is a perspective view of the movable body and the rotation support mechanism as viewed from the subject side. [Figure 7] FIG. 4 is a plan view of the movable body and the rotation support mechanism as viewed from the subject side. [Figure 8] FIG. 4 is a side view of the movable body and the rotation support mechanism. [Figure 9] FIG. 4 is an exploded perspective view of a rotation support mechanism and a first member. [Figure 10]FIG. 2 is a perspective view of a flexible printed circuit board connected to a camera module. [Figure 11] 11A and 11B are a plan view and a side view of the flexible printed circuit board of FIG. 10. [Figure 12] FIG. 11 is a development view of the flexible printed circuit board in FIG. [Figure 13] FIG. 13 is a perspective view of a flexible printed circuit board according to a first modified example. [Figure 14] FIG. 13 is a development view of a flexible printed circuit board according to the first modified example. [Figure 15] FIG. 11 is a perspective view of a flexible printed circuit board according to a second modified example. [Figure 16] FIG. 11 is a development view of a flexible printed circuit board according to a second modified example. [Figure 17] 11A and 11B are explanatory diagrams showing an example in which a bending position of a flexible printed circuit board is changed in accordance with a change in the external shape of the optical unit with a shake correction function. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an optical unit with a shake correction function to which the present invention is applied will be described with reference to the drawings.

[0025] (Overall composition) Fig. 1 is a perspective view of an optical unit with shake correction function to which the present invention is applied. Fig. 2 is an exploded perspective view of the optical unit with shake correction function of Fig. 1. Fig. 3 is a plan view of the optical unit with shake correction function with the cover removed, viewed from the subject side.

[0026] 1, optical unit 1 with shake correction function includes movable body 10 having camera module 2, and fixed body 11 supporting movable body 10. Fixed body 11 includes frame-shaped case 3 surrounding movable body 10 from the outer periphery, cover 4 fixed to case 3 from the subject side, and base 5 fixed to case 3 from the side opposite to the subject and covering the movable body from the side opposite to the subject. Optical unit 1 with shake correction function also includes flexible printed circuit board 6 drawn out from movable body 10, and flexible printed circuit board 7 routed along the outer periphery of case 3.

[0027] The optical unit 1 with shake correction function is used in optical devices such as camera-equipped mobile phones and drive recorders, and in optical devices such as action cameras and wearable cameras mounted on moving objects such as helmets, bicycles, and radio-controlled helicopters. In such optical devices, if the optical device shakes during shooting, the captured image will be distorted. In order to prevent the captured image from being tilted, the optical unit 1 with shake correction function corrects the tilt of the camera module 2 based on the acceleration, angular velocity, amount of shake, etc. detected by a detection means such as a gyroscope.

[0028] The camera module 2 includes a lens 2a and an image sensor 2b arranged on the optical axis L of the lens 2a (see FIGS. 4 and 5). The optical unit 1 with shake correction function performs shake correction by rotating the camera module 2 around the optical axis L of the lens 2a, around a first axis R1 perpendicular to the optical axis L, and around a second axis R2 perpendicular to the optical axis L and the first axis R1.

[0029] In the following description, the three mutually orthogonal axes are referred to as the X-axis, Y-axis, and Z-axis directions. Furthermore, one side in the X-axis direction is referred to as the -X direction, and the other side as the +X direction. One side in the Y-axis direction is referred to as the -Y direction, and the other side as the +Y direction. One side in the Z-axis direction is referred to as the -Z direction, and the other side as the +Z direction. The Z-axis direction is the optical axis direction. The -Z direction is the side of the camera module 2 away from the subject, and the +Z direction is the side of the camera module 2 toward the subject. The first axis R1 and the second axis R2 are inclined at 45 degrees around the Z axis (around the optical axis) with respect to the X-axis and Y-axis.

[0030] The optical unit 1 with shake correction function has a rotation support mechanism 12 that supports a movable body 10 rotatably about the Z axis, and a gimbal mechanism 13. The gimbal mechanism 13 is a swing support mechanism that supports the rotation support mechanism 12 rotatably about a first axis R1 and also supports the rotation support mechanism 12 rotatably about a second axis R2. The movable body 10 is supported by the fixed body 11 via the rotation support mechanism 12 and the gimbal mechanism 13 in a state where it can rotate about the first axis R1 and the second axis R2.

[0031] 3, the gimbal mechanism 13 includes a gimbal frame 14 and a first connection mechanism 15 that connects the gimbal frame 14 and the rotation support mechanism 12 rotatably around a first axis R1. The first connection mechanism 15 is provided on both sides of the gimbal frame 14 in the direction of the first axis R1. The gimbal mechanism 13 also includes a second connection mechanism 16 that connects the gimbal frame 14 and the fixed body 11 rotatably around a second axis R2. The second connection mechanism 16 is provided on both sides of the gimbal frame 14 in the direction of the second axis R2.

[0032] The optical unit 1 with shake correction function also includes a shake correction magnetic drive mechanism 20 that rotates the movable body 10 around the first axis R1 and the second axis R2. As shown in FIG. 3, the shake correction magnetic drive mechanism 20 includes a first shake correction magnetic drive mechanism 21 that generates a drive force around the X axis for the movable body 10, and a second shake correction magnetic drive mechanism 22 that generates a drive force around the Y axis for the movable body 10. The first shake correction magnetic drive mechanism 21 and the second shake correction magnetic drive mechanism 22 are arranged in the circumferential direction around the Z axis. In this example, the first shake correction magnetic drive mechanism 21 is disposed in the -Y direction of the camera module 2. The second shake correction magnetic drive mechanism 22 is disposed in the -X direction of the camera module 2.

[0033] The movable body 10 rotates about the X-axis and the Y-axis by combining the rotation about the first axis R1 and the rotation about the second axis R2, whereby the optical unit 1 with shake correction function performs pitching correction about the X-axis and yawing correction about the Y-axis.

[0034] Furthermore, the optical unit 1 with shake correction function has a magnetic drive mechanism 23 for rolling correction that rotates the movable body 10 around the Z axis. As shown in Fig. 3, the first magnetic drive mechanism 21 for shake correction, the second magnetic drive mechanism 22 for shake correction, and the magnetic drive mechanism 23 for rolling correction are arranged in the circumferential direction around the Z axis. In this example, the magnetic drive mechanism 23 for rolling correction is disposed in the +Y direction of the camera module 2. The magnetic drive mechanism 23 for rolling correction is located on the opposite side to the first magnetic drive mechanism 21 for shake correction, with the optical axis L being sandwiched therebetween.

[0035] (fixed body) In the fixed body 11, the cover 4 and the base 5 are plate-shaped and made of a non-magnetic metal. As shown in FIG. 2, a hook 8 bent at a substantially right angle toward the case 3 side is formed on the outer periphery of the cover 4 and the base 5. The case 3 is made of resin. The hook 8 is engaged with a protrusion 9 provided on the outer periphery of the case 3. As shown in FIG. 1, the gimbal mechanism 13 and the camera module 2 are disposed inside the opening 4a of the cover 4 and protrude from the cover 4 in the +Z direction.

[0036] The case 3 includes a rectangular frame portion 18 that surrounds the movable body 10 and the rotation support mechanism 12 from the outer periphery, and a rectangular wiring accommodating portion 19 that is disposed in the +X direction of the frame portion 18. The frame portion 18 includes a first side plate portion 181 and a second side plate portion 182 that face each other in the Y axis direction, and a third side plate portion 183 and a fourth side plate portion 184 that face each other in the X axis direction. The first side plate portion 181 is located in the -Y direction of the second side plate portion 182. The third side plate portion 183 is located in the +X direction of the fourth side plate portion 184.

[0037] The frame 18 has a notch 183a formed by cutting out the edge of the third side plate 183 in the -Z direction (see FIG. 3). A flexible printed circuit board 6 connected to the imaging element 2b is drawn out in the +X direction from the end of the movable body 10 in the -Z direction. The flexible printed circuit board 6 is drawn out in the +X direction of the frame 18 through the notch 183a of the third side plate 183 and is housed in the wiring housing 19.

[0038] The wiring housing 19 includes a first wall portion 191 and a second wall portion 192 that face each other in the Y-axis direction, and a third wall portion 193 that faces the third side plate portion 183 of the frame portion 18 in the X-axis direction. has a notch 193a formed by cutting out an edge in the -Z direction of the third wall 193. As shown in Fig. 3, the flexible printed circuit board 6 is routed inside the wiring accommodating section 19 in a direction along the inner surfaces of the third side plate 183, the first wall 191, and the third wall 193, and is drawn out to the outside of the wiring accommodating section 19 through the notch 193a.

[0039] As shown in FIG. 2, a first coil fixing hole 181a is provided in the first side plate portion 181 of the case 3. The first coil 21C is fixed in the first coil fixing hole 181a. A second coil fixing hole 184a is provided in the fourth side plate portion 184 of the case 3. The second coil 22C is fixed in the second coil fixing hole 184a. In addition, a third coil fixing hole 182a is provided in the second side plate portion 182. The third coil 23C is disposed in the third coil fixing hole 182a. The first coil 21C, the second coil 22C, and the third coil 23C are oval air-core coils that are long in the circumferential direction.

[0040] 3, the first coil 21C fixed to the first side plate portion 181 and the first magnet 21M fixed to the side surface of the movable body 10 in the -Y direction face each other in the Y direction, constituting a first shake correction magnetic drive mechanism 21. The second coil 22C fixed to the fourth side plate portion 184 and the second magnet 22M fixed to the side surface of the movable body 10 in the -X direction face each other in the X direction, constituting a second shake correction magnetic drive mechanism 22. The third coil 23C fixed to the second side plate portion 182 and the third magnet 23M fixed to the side surface of the movable body 10 in the +Y direction face each other in the Y direction, constituting a rolling correction magnetic drive mechanism 23.

[0041] The first coil 21C, the second coil 22C, and the third coil 23C are electrically connected to the flexible printed circuit board 7. The flexible printed circuit board 7 is fixed to the outer circumferential surface of the frame portion 18. In this embodiment, the flexible printed circuit board 7 is routed along the outer circumferential surfaces of the first side plate portion 181, the fourth side plate portion 184, and the second side plate portion 182 of the frame portion 18 in this order. Although not shown in FIGS. 1 and 2, the flexible printed circuit board 7 extends from the second side plate portion 182 to a side surface of the wiring housing portion 19, and is connected to a power supply board (not shown) fixed to the wiring housing portion 19.

[0042] A magnetic plate 17 (see FIG. 2) is fixed to the flexible printed circuit board 7 at two positions, one overlapping with the center of the first coil 21C and the other overlapping with the center of the second coil 22C. The magnetic plate 17 overlapping the first coil 21C and the first magnet 21M form a magnetic spring for returning the movable body 10 to a reference angle position in the rotation direction around the X-axis. The magnetic plate 17 overlapping the second coil 22C and the second magnet 22M form a magnetic spring for returning the movable body 10 to a reference angle position in the rotation direction around the Y-axis. Furthermore, an angular position sensor S is disposed at the center of each coil on the flexible printed circuit board 7. The optical unit 1 with shake correction function acquires the angular positions of the movable body 10 in the rotation directions around the X-axis, the Y-axis, and the Z-axis based on the output of the angular position sensor S.

[0043] (Gimbal mechanism) 4 and 5 are cross-sectional views of the optical unit 1 with shake correction function. FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3, and FIG. 5 is a cross-sectional view taken along the line BB in FIG. 3. As shown in FIGS. 3 and 5, a second connection mechanism 16 is provided at a diagonal position in the second axis R2 direction of the frame 18, which connects the gimbal frame 14 and the fixed body 11 rotatably around the second axis R2. A second gimbal frame support member 162 is fixed to a pair of recesses 161 provided at diagonal positions in the second axis R2 direction of the frame 18. As shown in FIG. 5, the second gimbal frame support member 162 includes a sphere 163 and a second thrust support member 164 to which the sphere 163 is fixed. By fixing the second gimbal frame support member 162 to the recesses 161, the sphere 163 is supported by the fixed body 11 at a position on the second axis R2. When assembling the gimbal mechanism 13, the gimbal frame is attached to the inner periphery of the second gimbal frame receiving member 162. The second connection mechanism 16 is thus formed.

[0044] As shown in FIG. 3 and FIG. 4, a first connection mechanism 15 is provided on both sides of the movable body 10 in the first axis R1 direction to connect the gimbal frame 14 and the rotation support mechanism 12 to be rotatable around the first axis R1. The first connection mechanism 15 includes a first gimbal frame support member 151 fixed to the rotation support mechanism 12 on both sides of the movable body 10 in the first axis R1 direction. As shown in FIG. 4, the first gimbal frame support member 151 includes a sphere 152 and a first thrust support member 153 to which the sphere 152 is fixed. By fixing the first thrust support member 153 to the rotation support mechanism 12, the sphere 152 is supported by the rotation support mechanism 12 at a position on the first axis R1. When assembling the gimbal mechanism 13, the gimbal frame 14 is inserted into the inner periphery of the first gimbal frame support member 151 and brought into point contact with the sphere 152 on the first axis R1. This forms the first connection mechanism 15.

[0045] The gimbal frame 14 is made of a metal leaf spring. As shown in Fig. 1, Fig. 4 and Fig. 5, the gimbal frame 14 includes a gimbal frame main body 140 located in the +Z direction of the movable body 10, a pair of first-axis side extension parts 141 protruding from the gimbal frame main body 140 toward both sides in the first axis R1 direction and extending in the -Z direction, and a pair of second-axis side extension parts 142 protruding from the gimbal frame main body 140 toward both sides in the second axis R2 direction and extending in the -Z direction. The gimbal frame 14 includes an opening 143 penetrating the center of the gimbal frame main body 140 in the Z-axis direction.

[0046] As shown in FIG. 2 and FIG. 4, each of the pair of first-axis-side extending portions 141 includes a first-axis-side concave curved surface 144 on the first axis R1 that is recessed inward in the first-axis-R1 direction toward the movable body 10. The first-axis-side extending portion 141 also includes a protruding portion 146 that protrudes in the -Z direction of the first-axis-side concave curved surface 144 toward the outer periphery. Next, each of the pair of second-axis-side extending portions 142 includes a second-axis-side concave curved surface 147 on the second axis R2 that is recessed inward in the second-axis-R2 direction toward the movable body 10. The second-axis-side concave curved surface 147 also includes a pair of notches 148 in the +Z direction, which are formed by cutting out both side edges in the circumferential direction.

[0047] The first thrust receiving member 153 includes a plate portion 154 extending in the Z-axis direction, a pair of arms 155 bent from both circumferential side edges of the plate portion 154 toward the movable body 10, and a pair of arms 156 bent from both circumferential side edges of the plate portion 154 toward the movable body 10 in the -Z direction of the pair of arms 155 (see Figs. 4 and 6). A sphere 152 is fixed to the plate portion 154 by welding. As described later, the rotation support mechanism 12 includes a pair of second extension portions 47 extending in the -Z direction on both sides of the first axis R1 direction of the movable body 10, and the first gimbal frame receiving member 151 has tips of the arms 155 and 156 fixed to tips of the second extension portions 47 by welding. The tip end of the second extension portion 47 is provided with a pair of protrusions 157 bent from both circumferential side edges toward the outer periphery, and the protrusions 157 fit between the arm portions 155 and 156 .

[0048] When assembling the gimbal mechanism 13, the first axis side extensions 141 of the gimbal frame 14 are bent inwardly and inserted into the inner periphery of the first gimbal frame receiving member 151. As a result, the first axis side extensions 141 are biased toward the outer periphery, so that the first axis side concave curved surfaces 144 of the first axis side extensions 141 and the spheres 152 of the first gimbal frame receiving member 151 can maintain contact with each other. In addition, the protrusions 146 provided at the tips of the first axis side extensions 141 protrude radially outward from the -Z direction side of the plate portion 154 (see FIG. 4). This prevents the gimbal frame 14 from slipping out of the first gimbal frame receiving member 151 in the +Z direction.

[0049] The second thrust receiving member 164 includes a plate portion 165 extending in the Z-axis direction and a pair of arms 167 bent from both circumferential side edges of the plate portion 165 toward the movable body 10. The body 163 is secured in place by welding.

[0050] When assembling the gimbal mechanism 13, the second-axis-side extensions 142 of the gimbal frame 14 are bent inwardly and inserted into the inner periphery of the second gimbal frame receiving member 162. As a result, the second-axis-side extensions 142 are biased outwardly, so that the second-axis-side concave curved surfaces 147 of the second-axis-side extensions 142 and the spheres 163 of the second gimbal frame receiving member 162 can maintain contact with each other. In addition, the arms 167 of the second thrust receiving member 164 fit into the notches 148 of the second-axis-side extensions 142. This prevents the gimbal frame 14 from slipping out of the second gimbal frame receiving member 162 in the +Z direction.

[0051] (movable body) FIG. 6 is a perspective view of the movable body 10 and the rotation support mechanism 12 as viewed from the subject side. FIG. 7 is a plan view of the movable body 10 and the rotation support mechanism 12 as viewed from the subject side. FIG. 8 is a side view of the movable body 10 and the rotation support mechanism 12 as viewed from the second axis R2 direction. FIG. 9 is an exploded perspective view of the rotation support mechanism 12 and the first member 25. As shown in FIGS. 4, 5, and 6, the movable body 10 includes the camera module 2, a frame-shaped holder 24 that holds the camera module 2, and a first member 25 fixed to the holder 24. The holder 24 is made of resin, and the first member 25 is made of a magnetic metal.

[0052] As shown in FIG. 6 and FIG. 9, the first member 25 includes a first annular plate portion 26 that surrounds the optical axis L and overlaps the outer periphery of the camera module 2 from the +Z direction, and a first extension portion 27 that protrudes from the first annular plate portion 26 toward the outer periphery and is bent in the -Z direction on the outer periphery of the camera module 2 to be connected to the holder 24. In this embodiment, the rotation support mechanism 12 is disposed in a gap between the first annular plate portion 26 and the camera module 2 in the Z-axis direction (optical axis direction). The first member 25 also includes first protruding plate portions 28 that are provided at four locations around the optical axis L. The first protruding plate portions 28 protrude from the first annular plate portion 26 in four directions, on both sides in the first axis R1 direction and on both sides in the second axis R2 direction.

[0053] The first extension portion 27 is disposed at three positions in the -X direction, +Y direction, and -Z direction of the first annular plate portion 26. The angular position at which the first extension portion 27 is disposed is the angular position at which the first magnet 21M and the second magnet 22M of the shake correction magnetic drive mechanism 20 and the third magnet 23M of the rolling correction magnetic drive mechanism 23 are disposed. The first extension portion 27 includes a first extension portion first part 271 that extends from the first annular plate portion 26 to the outer periphery side and bends in the -Z direction, and a rectangular first extension portion second part 272 that is connected to the tip of the first extension portion first part 271 in the -Z direction and has a wider circumferential width than the first extension portion first part 271. The first extension portion second part 272 is fixed to the holder 24.

[0054] As shown in Figures 4 and 5, the camera module 2 includes a camera module main body 30A and a camera module cylindrical portion 30B that protrudes in the +Z direction from the center of the camera module main body 30A. The camera module cylindrical portion 30B houses a lens 2a. The holder 24 surrounds the camera module main body 30A from the outer periphery. The camera module cylindrical portion 30B protrudes in the +Z direction from a circular hole 26a (see Figures 6 and 9) provided in the center of the first annular plate portion 26, and is disposed in an opening 143 of the gimbal frame 14 (see Figure 1).

[0055] 7, the camera module body 30A and the holder 24 have a substantially octagonal contour when viewed from the +Z direction. The holder 24 includes a first side wall 31 and a second side wall 32 extending parallel to the X direction, and a third side wall 33 and a fourth side wall 34 extending parallel to the Y direction. The first side wall 31 is located in the -Y direction of the second side wall 32. The third side wall 33 is located in the +X direction of the fourth side wall 34. A notch 33a is provided on the edge of the -Z direction of the third side wall 33 to pass therethrough the flexible printed circuit board 6 drawn out from the end of the camera module 2 in the -Z direction in the +X direction.

[0056] Furthermore, the holder 24 includes a fifth side wall 35 and a sixth side wall 36 located diagonally in the first axis R1 direction, and a seventh side wall 37 and an eighth side wall 38 located diagonally in the second axis R2 direction. The fifth side wall 35 is located in the -X direction of the sixth side wall 36. The seventh side wall 37 is located in the -X direction of the eighth side wall 38. As shown in FIG. 6, a holder protrusion 39 protruding in the +Z direction is formed on the end faces in the +Z direction of the fifth side wall 35, the sixth side wall 36, the seventh side wall 37, and the eighth side wall 38.

[0057] As shown in FIG. 7, the first magnet 21M is fixed to the first side wall 31 of the holder 24, and the second magnet 22M is fixed to the third side wall 33. The first magnet 21M and the second magnet 22M are two-pole magnetized in the Z-axis direction. The magnetization polarization lines of the first magnet 21M and the second magnet 22M extend in the circumferential direction. The first magnet 21M and the second magnet 22M are arranged with the same pole facing the Z-axis direction. The third magnet 23M is fixed to the fourth side wall 34 of the holder 24. The third magnet 23M is pole-magnetized in the circumferential direction. The first magnet 21M, the second magnet 22M, and the third magnet 23M are arranged in the circumferential direction around the optical axis L. The third magnet 23M is arranged on the opposite side of the first magnet 21M across the optical axis L.

[0058] 7, a recess 40 recessed toward the inner periphery is formed on the outer periphery of the first side wall 31, the second side wall 32, and the fourth side wall 34 of the holder 24, and the first magnet 21M, the second magnet 22M, and the third magnet 23M are housed in the recess 40. The first magnet 21M, the second magnet 22M, and the third magnet 23M are positioned in the Z-axis direction by abutting from the +Z direction against a bottom surface 41 (see FIG. 8) provided at the end of each recess 40 in the -Z direction.

[0059] The three recesses 40 each have a groove 42 formed on the inner surface on both sides in the circumferential direction. As shown in FIG. 7, the first extension second portion 272 provided at the tip of the first extension portion 27 in the -Z direction is inserted into each recess 40. The first extension second portion 272 has both circumferential ends inserted into the groove 42 and is fixed to each recess 40 by adhesive. The first extension second portion 272 is inserted radially inward of the first magnet 21M, the second magnet 22M, and the third magnet 23M. The first extension second portion 272 is made of a magnetic metal and functions as a yoke for each magnet.

[0060] (Rotational support mechanism) 9, the rotation support mechanism 12 includes a second member 45 provided with a second annular plate portion 46 facing the first annular plate portion 26 of the first member 25 in the Z-axis direction, and a metal member 50 connecting the first annular plate portion 26 and the second annular plate portion 46. The metal member 50 includes an annular movable body side fixed portion 51 fixed to the first annular plate portion 26, an annular fixed body side fixed portion 52 fixed to the second annular plate portion 46, and a leaf spring portion 53 connecting the movable body side fixed portion 51 and the fixed body side fixed portion 52. The leaf spring portion 53 includes a first leaf spring portion 54 that elastically deforms in the circumferential direction around the optical axis, and a second leaf spring portion 55 that elastically deforms in the radial direction around the optical axis.

[0061] The second member 45 includes a second annular plate portion 46 surrounding the optical axis L, a pair of second extension portions 47 protruding from the second annular plate portion 46 on both sides in the first axis R1 direction, and a pair of second protruding plate portions 48 protruding from the second annular plate portion 46 on both sides in the second axis R2 direction. The pair of second extension portions 47 are connected to the first axis side extension portions 141 of the gimbal frame 14 so as to be rotatable about the first axis R1 (see FIG. 4). Therefore, the second member 45 is supported by the gimbal mechanism 13 so as to be rotatable about the first axis R1.

[0062] Each of the pair of second extension portions 47 includes a second extension portion first portion 471 extending from the second annular plate portion 46 in the first axis R1 direction, and a second extension portion second portion 472 extending in the Z-axis direction on the outer circumferential side of the movable body 10. As shown in FIG. 4, the second extension portion second portion 472 faces the movable body 10 with a small gap therebetween, on the outer side of the movable body 10 in the first axis R1 direction. As shown in FIG. 4 and FIG. A first gimbal frame receiving member 151 is fixed to the surface of the second extension portion second section 472 opposite to the movable body 10.

[0063] (Metal parts) As shown in FIG. 9, the metal member 50 is constructed by assembling two parts, a first metal member 56 fixed to the second annular plate portion 46 and a second metal member 57 fixed to the first annular plate portion 26. The first metal member 56 and the second metal member 57 are manufactured by bending an etched metal plate. The first metal member 56 and the second metal member 57 have different plate thicknesses, and the plate thickness of the first metal member 56 is smaller than the plate thickness of the second metal member 57. For example, in this embodiment, the plate thickness of the first metal member 56 is 30 μm, and the plate thickness of the second metal member 57 is 70 μm. Therefore, the spring constant of the first leaf spring portion 54 provided on the first metal member 56 is smaller than the spring constant of the second leaf spring portion 55 provided on the second metal member 57.

[0064] (First metal member) The first metal member 56 includes a ring-shaped fixed body side fixed part 52 and a first leaf spring part 54 connected to an edge of a first cutout part 58 formed by cutting out the outer circumferential edge of the fixed body side fixed part 52. The first cutout part 58 includes a first edge part 59 extending in the radial direction of the fixed body side fixed part 52, and the first leaf spring part 54 is bent at a substantially right angle from the first edge part 59 so that the plate thickness direction faces the circumferential direction of the fixed body side fixed part 52, and extends toward the radially outer side of the fixed body side fixed part 52. When the fixed body side fixed part 52 is fixed to the second annular plate part 46, the first leaf spring part 54 rises in the +Z direction relative to the second annular plate part 46, the plate thickness direction faces the circumferential direction around the optical axis, and is disposed so as to extend radially outward around the optical axis L. Therefore, the first leaf spring part 54 elastically deforms in the circumferential direction around the optical axis L.

[0065] Four first notches 58 are provided at intervals in the circumferential direction on the outer peripheral edge of the fixed body side fixing part 52, and the first leaf spring parts 54 extend radially outward from the first edge parts 59 of each of the first notches 58. Here, the second member 45, which is the mating member to which the fixed body side fixing part 52 is fixed, has four second slits 49 extending radially outward from the inner peripheral edge of the second annular plate part 46. The second slits 49 extend radially in the circumferential center of each of the pair of second extension parts 47 and the pair of second protruding plate parts 48. Therefore, the second member 45 has four second slits 49 extending radially at four locations on both sides in the first axis R1 direction and both sides in the second axis R2 direction. The first metal member 56 is positioned so that the four first leaf spring parts 54 are disposed in the second slits 49, and is fixed to the second annular plate part 46. As a result, the four first leaf spring portions 54 are arranged radially around the optical axis L on both sides in the direction of the first axis R1 and on both sides in the direction of the second axis R2.

[0066] The first metal member 56 is configured such that the bending directions of the metal plate at the locations where the four first leaf spring parts 54 are connected to the fixed body side fixed part 52 are not aligned in the same direction. Specifically, the bending directions of the metal plate at the locations where the first leaf spring parts 54 are bent in the +Z direction from the fixed body side fixed part 52 at two locations adjacent in the circumferential direction are opposite to each other. As shown in FIG. 9, in this embodiment, at two first cutout parts 58 adjacent in the circumferential direction, the positions of the first edge parts 59 to which the first leaf spring parts 54 are connected are opposite to each other in the circumferential direction. Therefore, one of the first leaf spring parts 54 adjacent in the circumferential direction is bent in the +Z direction from the edge (first edge part 59) on one side in the circumferential direction of the first cutout part 58, and the other of the first leaf spring parts 54 adjacent in the circumferential direction is bent in the +Z direction from the edge (first edge part 59) on the other side in the circumferential direction of the first cutout part 58.

[0067] If the bending directions of the first leaf spring parts 54 are aligned in the same direction, any error in the bending angle of the first leaf spring parts 54 during the manufacture of the first metal member 56 will result in circumferential positional deviations of the first leaf spring parts 54 in the same direction, causing the first member 25 and the second member 45 to be misaligned in the circumferential direction. This results in a problem in that the rotational position (initial position) of the movable body 10 when not energized is shifted. However, in this embodiment, the bending directions of the first leaf spring portions 54 adjacent to each other in the circumferential direction are opposite to each other in the circumferential direction. Therefore, even if there is an error in the bending angle, it is possible to avoid circumferential positional deviation of the first member 25 and the second member 45, and it is possible to avoid deviation of the rotational position (initial position) of the movable body 10 when no current is applied.

[0068] The first plate spring portion 54 includes a first arm portion 541 and a second arm portion 542 extending in the radial direction centered on the optical axis L, and a connecting portion 543 connecting the first arm portion 541 and the second arm portion 542. In this embodiment, the first arm portion 541, the second arm portion 542, and the connecting portion 543 are arranged in the same plane. The first arm portion 541 and the second arm portion 542 extend in the radial direction at positions adjacent to each other in the optical axis direction, and the connecting portion 543 connects the radially outer ends of the first arm portion 541 and the second arm portion 542 in a shape folded back in the radial direction. The first arm portion 541 is located in the -Z direction of the second arm portion 542, and is connected to a first edge portion 59 of the fixed body side fixing portion 52. A rectangular first joint portion 544 that is joined to the second plate spring portion 55 by welding or the like is provided at the radially inner end of the second arm portion 542.

[0069] As shown in FIG. 4 and FIG. 5, the first plate spring portion 54 has a radial center portion curved in the −Z direction and is accommodated in the second slit 49 provided in the second extension portion first part 471 or the second protruding plate portion 48. The tip portion of the first plate spring portion 54 extends radially outward while inclining in the +Z direction, and is located radially outward from the tip of the second slit 49 in the +Z direction of the second extension portion first part 471 or the second protruding plate portion 48. The first protruding plate portion 28 disposed in the +Z direction of the first plate spring portion 54 has a shorter radial length than the first plate spring portion 54, so that the tip portion of the first plate spring portion 54 does not interfere with the first protruding plate portion 28. With this configuration, the height of the rotation support mechanism 12 in the optical axis direction can be reduced and the outer diameter as viewed from the optical axis direction can be reduced while ensuring the radial length of the first plate spring portion 54, thereby making the rotation support mechanism 12 compact in configuration.

[0070] (Second metal member) The second metal member 57 includes a ring-shaped movable body side fixed part 51 and a second plate spring part 55 connected to an edge of a second cutout part 60 formed by cutting out the inner peripheral edge of the movable body side fixed part 51. The second cutout part 60 includes a second edge part 61 intersecting the radial direction of the movable body side fixed part 51, and the second plate spring part 55 is bent at a substantially right angle from the second edge part 61 and extends in the circumferential direction of the movable body side fixed part 51 in a plane intersecting the radial direction with the plate thickness direction facing the radial direction of the movable body side fixed part 51. When the movable body side fixed part 51 is fixed to the surface of the first annular plate part 26 in the +Z direction, the second plate spring part 55 is arranged to extend in the -Z direction with respect to the first annular plate part 26 and extend in the circumferential direction in a plane intersecting the radial direction with the plate thickness direction facing the radial direction centered on the optical axis. Therefore, the second leaf spring portion 55 elastically deforms in the radial direction with the optical axis L as the center.

[0071] The inner peripheral edge of the movable body side fixed part 51 is provided with four second notches 60 spaced apart from each other in the circumferential direction. Four third notches 62 are provided by cutting out a portion adjacent to the second edge 61 of each second notch 60 in the circumferential direction toward the outer periphery. Four protruding parts 63 are provided on the outer peripheral edge of the movable body side fixed part 51, protruding the outer peripheral side of each third notch 62 toward the radially outward direction. The tip of the second leaf spring part 55 is provided with a rectangular second joint part 551 bent toward the radially outward direction at a substantially right angle. The second joint part 551 and the first joint part 544 of the first leaf spring part 54 are joined by welding, thereby connecting the first leaf spring part 54 and the second leaf spring part 55. The second leaf spring portion 55 bends at approximately a right angle from the second edge portion 61 and then extends circumferentially toward the third notch portion 62, so that the welding point between the second joint portion 551 and the first joint portion 544 is positioned in the third notch portion 62 and is configured so as not to interfere with the inner edge of the movable body side fixed portion 51.

[0072] Here, the first member 25, which is the mating member to which the movable body side fixed portion 51 is fixed, has a first annular Four first slits 29 extending radially outward from the inner peripheral edge of the plate portion 26 are provided. The first slits 29 extend radially in the circumferential center of the first protruding plate portion 28 protruding from the first annular plate portion 26 in four directions, on both sides in the first axis R1 direction and on both sides in the second axis R2 direction. Thus, the first member 25 is provided with four first slits 29 extending radially at four locations on both sides in the first axis R1 direction and on both sides in the second axis R2 direction. The four first slits 29 overlap with the second slits 49 provided in the second member 45 when viewed from the optical axis direction. The first member 25 is also provided with four notch portions 69 that are cut out from portions adjacent to the first slits 29 in the circumferential direction. The notch portions 69 are provided at positions that overlap with the third notch portions 62 of the movable body side fixed portion 51. The second metal member 57 is positioned so that the four second leaf spring portions 55 are arranged in the cutout portions 69 and the second joint portions 551 provided at the tips of the second leaf spring portions 55 are positioned in the circumferential center of the first slit 29, and is fixed to the first annular plate portion 26.

[0073] In the second metal member 57, similarly to the first metal member 56, the bending directions of the metal plate at the four second leaf spring portions 55 at the portions where they are connected to the movable body side fixed portion 51 are not aligned in the same direction. Specifically, the bending directions of the metal plate at the portions where the second leaf spring portions 55 are bent in the -Z direction from the movable body side fixed portion 51 at two adjacent second leaf spring portions 55 in the circumferential direction are opposite to each other. As shown in Fig. 9, in this embodiment, in the two second cutout portions 60 adjacent to each other in the circumferential direction, the positions of the second edge portions 61 to which the second leaf spring portions 55 are connected are opposite to each other in the circumferential direction. Therefore, one of the second leaf spring portions 55 adjacent in the circumferential direction is bent in the -Z direction from the edge (second edge portion 61) on one circumferential side of the second cutout portion 60, and the other of the second leaf spring portions 55 adjacent in the circumferential direction is bent in the -Z direction from the edge (second edge portion 61) on the other circumferential side of the second cutout portion 60.

[0074] In the case where the bending directions of the second leaf spring parts 55 are aligned in the same direction, if there is an error in the bending angle of the second leaf spring parts 55 during the manufacture of the second metal member 57, the second leaf spring parts 55 will be displaced in the same direction in the circumferential direction, and the first member 25 and the second member 45 will be displaced in the circumferential direction. As a result, there is a problem that the rotational position (initial position) of the movable body 10 when no current is applied is shifted. However, in this embodiment, since the bending directions of the second leaf spring parts 55 adjacent to each other in the circumferential direction are opposite to each other in the circumferential direction, even if there is an error in the bending angle, it is possible to avoid the circumferential positional shift of the first member 25 and the second member 45, and to avoid the rotational position (initial position) of the movable body 10 when no current is applied being shifted.

[0075] (Radial stopper mechanism) The rotation support mechanism 12 includes a radial stopper portion 64 that bends in the +Z direction from the outer circumferential edge of the second annular plate portion 46 and extends to the outer circumferential side of the first annular plate portion 26. The radial stopper portion 64 collides with the outer circumferential edge of the second annular plate portion 46, thereby restricting radial positional deviation between the first annular plate portion 26 and the second annular plate portion 46. In this embodiment, a radial gap T1 between the radial stopper portion 64 and the outer circumferential end face of the first annular plate portion 26 is set to 0.1 mm (see FIG. 7).

[0076] As shown in Fig. 7 and Fig. 9, the radial stopper portion 64 is disposed at one location each between the first extension portion 27 and the second extension portion 47 that are adjacent in the circumferential direction, and between the first extension portion 27 and the second protruding plate portion 48 that are adjacent in the circumferential direction. In addition, the radial stopper portion 64 is disposed at one location each between the first rotation restricting portion 71 and the second extension portion 47, which will be described later, and between the first rotation restricting portion 71 and the second protruding plate portion 48. Therefore, the radial stopper portion 64 is disposed at eight locations. The eight radial stopper portions 64 are disposed approximately evenly around the optical axis.

[0077] (Stopper mechanism in the optical axis direction) The rotation support mechanism 12 includes an optical axis direction stopper portion 65 provided on the first member 25 and an extension portion 66 provided on the second member 45 and facing the optical axis direction stopper portion 65 in the Z axis direction (optical axis direction) as a stopper mechanism for restricting the movement range of the second member 45 in the +Z direction. 8 and 9, the optical axis direction stopper portion 65 is bent at a substantially right angle from the circumferential edge of the first protruding plate portion 28 and extends in the -Z direction. The extension portion 66 is provided at the circumferential end of the second extension portion first part 471 and the circumferential end of the second protruding plate portion 48. The optical axis direction stopper portion 65 and the extension portion 66 collide with each other to restrict the movement range of the second member 45 in the +Z direction relative to the first member 25. In this embodiment, the gap T2 in the Z direction between the optical axis direction stopper portion 65 and the extension portion 66 is set to 0.1 mm (see FIG. 8).

[0078] In this embodiment, a pair of optical axis direction stopper parts 65 are provided on both circumferential edges of each first protruding plate part 28. As shown in Figs. 6 and 8, the first protruding plate part 28 and the pair of optical axis direction stopper parts 65 have a gate-like shape when viewed from the radial direction, and are arranged to surround the first leaf spring part 54 arranged in the second slit 49 from both circumferential sides and the +Z direction. The extension parts 66 are provided on both circumferential ends of the second extension part first part 471 and both circumferential ends of the second protruding plate part 48. Therefore, the second extension part first part 471 and the second protruding plate part 48 have a shape in which the radial inner part where the extension part 66 is provided has a wider circumferential width than the radial outer part where the extension part 66 is not provided.

[0079] In addition, the rotation support mechanism 12 includes a holder protrusion 39 provided at four locations diagonally in the first axis R1 direction and diagonally in the second axis R2 direction of the holder 24, as a stopper mechanism for regulating the movement range of the second member 45 in the -Z direction, a tip portion of a second protruding plate portion 48 provided on the second member 45 and extending to a position opposite the holder protrusion portion 39 in the Z-axis direction, and a second extension portion first portion 471.

[0080] As shown in FIG. 8, the tip of the holder protrusion 39 in the +Z direction protrudes in the +Z direction from the end surface of the camera module main body 30A in the +Z direction. Therefore, the gap in the Z-axis direction between the tip surface of the holder protrusion 39 and the second protruding plate 48 or the second extension part first part 471 is narrower than the gap in the Z-axis direction between the camera module 2 and the second protruding plate 48 or the second extension part first part 471. Therefore, the collision between the holder protrusion 39 and the second protruding plate 48 or the second extension part first part 471 restricts the movement range of the second member 45 in the -Z direction. In this embodiment, the gap T3 in the Z-axis direction between the holder protrusion 39 and the second protruding plate 48 is set to 0.1 mm (see FIG. 8). Similarly, the gap in the Z-axis direction between the holder protrusion 39 and the second extension part first part 471 is also set to 0.1 mm.

[0081] (Rotation restriction mechanism) The rotation support mechanism 12 includes a rotation restricting mechanism 70 that restricts the rotation range of the movable body 10 around the optical axis L. As shown in Figs. 6 and 7, the rotation restricting mechanism 70 includes a first rotation restricting portion 71 provided on the first member 25 and a second rotation restricting portion 72 provided on the second member 45. The first rotation restricting portion 71 protrudes from the first annular plate portion 26 toward the outer periphery (in this embodiment, the +X direction) and bends in the -Z direction. A tip end of the first rotation restricting portion 71 in the -Z direction is fixed to the third side wall 33 of the holder 24.

[0082] The second rotation restricting portion 72 is a protrusion that bends from the outer circumferential edge of the second annular plate portion 46 in the +Z direction (optical axis direction) and extends to a position facing the first rotation restricting portion 71 in the circumferential direction. The second rotation restricting portion 72 is provided at one location on each side of the first rotation restricting portion 71 in the circumferential direction. In this embodiment, the first rotation restricting portion 71 is integrally formed with a radial stopper portion 64 that restricts radial positional deviation between the first annular plate portion 26 and the second annular plate portion 46. The two second rotation restricting portions 72 surround both sides of the first rotation restricting portion 71 in the circumferential direction. Therefore, the first rotation restricting portion 71 and the second rotation restricting portion 72 collide with each other, thereby restricting the rotation range of the movable body 10 around the optical axis L relative to the second member 45.

[0083] (Flexible Printed Circuit Board) FIG. 10 is a perspective view of the flexible printed circuit board 6 connected to the camera module 2. FIG. 11 is a plan view and a side view of the flexible printed circuit board 6 of FIG. 10. FIG. 12 is a development view of the flexible printed circuit board of FIG. 10. FIG. 12(a) is a development view seen from the +Z side, and FIG. 12(b) is a development view seen from the -Z side. In the following description, the first direction coincides with the X-axis direction, one side of the first direction is the +X direction, and the other side of the first direction is the -X direction. Moreover, the second direction coincides with the Y-axis direction, one side of the second direction is the -Y direction, and the other side of the second direction is the +Y direction.

[0084] 2 and 3, the flexible printed circuit board 6 includes a first lead-out portion 6A led out from the movable body 10 in the +X direction (one side of the first direction), a bent portion 6B connected to the first lead-out portion 6A and routed inside the wiring accommodating portion 19, and a second lead-out portion 6C connected to the bent portion 6B and led out to the outside of the wiring accommodating portion 19. As described above, the first lead-out portion 6A passes through the notch portion 183a provided in the third side plate portion 183 of the frame portion 18, and the second lead-out portion 6C passes through the notch portion 193a, which is a wiring outlet provided in the third wall portion 193 of the wiring accommodating portion 19, and extends out of the fixed body 11.

[0085] The fixed body 11 includes a board fixing portion 6D to which the flexible printed circuit board 6 is fixed at a position spaced apart from the movable body 10 in the +X direction. The board fixing portion 6D is the inner surface in the +Z direction of a notch portion 193a provided in the wiring housing portion 19 (see FIG. 2). The second extraction portion 6C is fixed to the board fixing portion 6D via a reinforcing plate 6E.

[0086] The bending portion 6B includes a first portion 610 that is bent in the +Z direction (one side in the optical axis direction) from the first drawn portion 6A and extends in the -Y direction (one side in the second direction), a second portion 620 that is bent in the +X direction (one side in the first direction) from the first portion 610 and extends in the +X direction, and a third portion 630 that is bent in the +Y direction (the other side in the second direction) from the second portion 620 and extends in the +Y direction. The second drawn portion 6C is bent in the +X direction from an end in the -Z direction (the other side in the optical axis direction) of the +Y direction end of the third portion 630 and extends in the +X direction.

[0087] The bent portion 6B extends in a rectangular shape along the inner peripheral surface of the wiring accommodating portion 19. The first portion 610 extends along the third side plate portion 183 of the frame portion 18, the second portion 620 extends along the first wall portion 191, and the third portion 630 extends along the third wall portion 193. The bent portion 6B is difficult to move at two points, the end of the first portion 610 in the +Y direction connected to the first draw-out portion 6A and the end of the second portion 620 in the +Y direction connected to the second draw-out portion 6C, but the other portions are not fixed to the fixed body 11 and can therefore move easily in the internal space of the wiring accommodating portion 19.

[0088] As shown in FIG. 3, the first drawn section 6A is disposed at a position shifted toward the end of the movable body 10 in the +Y direction (the other side in the second direction). The end of the movable body 10 in the +X direction is formed by the third side wall 33 of the holder 24, and the first drawn section 6A is disposed at a position shifted toward the end of the third side wall 33 in the +Y direction. In the first portion 610 of the bending portion 6B, a portion extending in the -Y direction further than the first drawn section 6A can bend freely. In this embodiment, the position of the first drawn section 6A is shifted as close as possible to the +Y direction, so that the length of the portion of the first portion 610 that can bend freely is long.

[0089] The second lead-out portion 6C is disposed at a position shifted toward the end in the +Y direction (the other side in the second direction) of the third wall portion 193 of the wiring accommodating portion 19. As shown in FIG. 3, the third wall portion 193 of the wiring accommodating portion 19 is longer in the Y-axis direction (the second direction) than the third side wall 33 of the holder 24. Therefore, the second lead-out portion 6C is disposed in the +Y direction (the other side in the second direction) than the first lead-out portion 6A. The third portion 630 of the bending portion 6B is capable of bending freely at a portion extending in the -Y direction further than the second lead-out portion 6C. In this embodiment, the position of the second lead-out portion 6C is shifted as far as possible toward the +Y direction. Since it is in the direction, the length of the portion that can be freely bent in the third portion 630 is long.

[0090] Shape-retaining members 90 and 91 that retain the flexible substrate in a shape bent at an approximately right angle are fixed to the flexible printed circuit board 6. The shape-retaining members 90 and 91 are members obtained by bending a metal plate at an approximately right angle. The shape-retaining member 90 is fixed to a bent portion between the first lead portion 6A and the bent portion 6B, and a bent portion between the second lead portion 6C and the bent portion 6B. The shape-retaining member 91 is fixed to a bent portion between the first portion 610 and the second portion 620 of the bent portion 6B, and a bent portion between the second portion 620 and the third portion 630. As shown in FIG. 12, the shape-retaining members 90 and 91 that are stretched out in a plane are fixed to the flexible printed circuit board 6 in the expanded shape, and when the flexible printed circuit board 6 is bent, the flexible substrate and the shape-retaining members 90 and 91 are bent together.

[0091] At the bent portion between the first drawer portion 6A and the bent portion 6B, the shape-retaining member 90 is disposed at a position offset toward the end in the +Y direction (the other side in the second direction) of the first drawer portion 6A and the first portion 610. At the bent portion between the second drawer portion 6C and the bent portion 6B, the shape-retaining member 90 is disposed at a position offset toward the end in the +Y direction (the other side in the second direction) of the second drawer portion 6C and the third portion 630. By disposing the shape-retaining member 90 offset toward the end in the +Y direction, the length of the portion whose movement is not restricted by the shape-retaining member 90 can be increased.

[0092] The developed shape of the bent portion 6B is the shape of the flat portion 600 shown in Fig. 12. A single slit 609 extending in the Y-axis direction (second direction) is provided at the center of the flat portion 600 in the first direction X. The flat portion 600 includes two branch portions 601, 602 of the same width arranged on both sides of the slit 609, a first connection portion 603 connecting the +Y side ends of the branch portions 601, 602, and a second connection portion 604 connecting the -Y side ends of the branch portions 601, 602. The first lead portion 6A and the second lead portion 6C extend in the -X direction from the edge of the -X side of the flat portion 600.

[0093] When forming the bent portion 6B from the flat portion 600 shown in FIG. 12, the first connecting portion 603 is folded once in the Z-axis direction and joined with the first reinforcing plate 81 sandwiched therebetween to form the first joint portion 640. The second connecting portion 604 is folded once in the Z-axis direction and joined with the second reinforcing plate 82 sandwiched therebetween to form the second joint portion 650. For example, as shown in FIG. 12(b), two first reinforcing plates 81 are fixed to the −Z direction surface of the first connecting portion 603, and the first reinforcing plates 81 are bonded together to form the first joint portion 640. Similarly, two second reinforcing plates 82 are fixed to the −Z direction surface of the second connecting portion 604, and the second reinforcing plates 82 are bonded together to form the second joint portion 650.

[0094] Since the flat portion 600 is folded back at the position of the slit 609, the two branched portions 601, 602 overlap in the first direction X while being separated from each other. As shown in FIG. 12(a), the shape-retaining member 91 is fixed to the branched portion 601 arranged on the -X side of the two branched portions 601, 602 at two positions spaced apart in the Y-axis direction (second direction). The positions at which the shape-retaining member 91 is fixed correspond to the bent portion between the first portion 610 and the second portion 620 and the bent portion between the second portion 620 and the third portion 630. As described above, after the flat portion 600 is folded back in the Z-axis direction to form the first joint portion 640 and the second joint portion 650, the shape-retaining member 91 is bent at an approximately right angle, so that the branched portion 601 is bent twice. The other branched portion 602 is bent on the inner periphery side of the branched portion 601 into a shape that follows the branched portion 601. As a result, a bent portion 6B having the shape shown in Figures 10 and 11 is formed.

[0095] By the above processing, the bent portion 6B is formed by bending two flexible substrates in a standing posture in the Z-axis direction. The flexible substrate 600A is laminated, bent twice, and routed in a rectangular shape along the XY plane. As shown in Fig. 10 and Fig. 11, the two flexible substrates are a first flexible substrate 600A having a first lead section 6A and a second lead section 6C connected to an edge on the -Z side, and a second flexible substrate 600B overlapping the +X side of the first flexible substrate 600A in a first portion 610. The branching portion 601 constitutes the first flexible substrate 600A, and the branching portion 602 constitutes the second flexible substrate 600B. The first joint portion 640 includes a first folded portion 641 that connects the first flexible substrate 600A and the second flexible substrate 600B in a shape folded back in the Z-axis direction in opposite directions. Second joint portion 650 includes second folded portion 651 that connects first flexible substrate 600A and second flexible substrate 600B in a shape folded back in the Z-axis direction.

[0096] (Main effects of this embodiment) As described above, the optical unit 1 with shake correction function in this embodiment includes a movable body 10 equipped with a camera module 2, a support mechanism (a rotational support mechanism 12 and a gimbal mechanism 13) that supports the movable body 10 rotatably around a first axis R1 that intersects the optical axis L and also rotatably supports the movable body 10 around a second axis R2 that intersects the optical axis L and the first axis R1, a fixed body 11 that supports the movable body 10 via the support mechanism, and a flexible printed circuit board 6 connected to the movable body 10. The flexible printed circuit board 6 includes a first drawn-out portion 6A drawn out from the movable body 10 in the +X direction (one side in the first direction), a first portion 610 bent in the +Z direction (one side in the optical axis direction) from the first drawn-out portion 6A and extending in the -Y direction (one side in the second direction), a second portion 620 bent from the first portion 610 in the +X direction (one side in the first direction) and extending in the +X direction (one side in the first direction), and a third portion 630 bent from the second portion 620 in the +Y direction (the other side in the second direction) and extending in the +Y direction (the other side in the second direction), and a second drawn-out portion 6C bent in the +X direction (one side in the first direction) from an end of the third portion 630 in the -Z direction (the other side in the optical axis direction) and drawn out from the fixed body 11.

[0097] In this embodiment, the flexible printed circuit board 6 connected to the movable body 10 is bent after being drawn out from the movable body 10 to assume a posture extending in the Z-axis direction (optical axis direction), and is bent twice at approximately right angles in a space adjacent to the movable body 10 in a posture standing up approximately perpendicular to the installation surface of the movable body 10, and is drawn around in a rectangular shape. As a result, when the movable body 10 rotates in a rolling direction around the optical axis L and when the movable body 10 deforms in a yawing direction around the X-axis intersecting the optical axis L, the entire bent portion 6B of the flexible printed circuit board 6 is easily bent, so that the spring constant is small. In addition, when the movable body 10 deforms in a pitching direction around the Y-axis intersecting the optical axis L and the X-axis, the first portion 610 and the third portion 630 are easily bent, so that the spring constant is small. Furthermore, since the number of times of bending the flexible printed circuit board 6 is not large, the variation in characteristics caused by the variation in the bending shape is small. In addition, since the bending process is easy, the productivity can be increased.

[0098] In this embodiment, the second lead-out portion 6C is bent in the +X direction (one side in the first direction) from the end of the third portion 630 in the -Z direction (the other side in the optical axis direction), but the second lead-out portion 6C may be configured to be bent in the -X direction (one side in the first direction) from the end of the third portion 630 in the +Z direction (the other side in the optical axis direction).

[0099] In addition, in this embodiment, the movable body 10 is supported by the rotating support mechanism 12, and the gimbal mechanism 13 supports the movable body 10 via the rotating support mechanism 12. However, a configuration in which the movable body 10 is supported by the gimbal mechanism 13, and the rotating support mechanism 12 supports the movable body 10 via the gimbal mechanism 13 may also be adopted.

[0100] In this embodiment, the first lead portion 6A is disposed at a position shifted toward the end in the +Y direction (the other side in the second direction) of the movable body 10. Therefore, the length of the freely bending portion of the first portion 610 is longer than when the first lead portion 6A is drawn from the center of the movable body 10 in the second direction. Therefore, the spring constant of the flexible printed circuit board 6 is small. Moreover, the second drawn-out portion 6C is disposed further in the +Y direction (the other side in the second direction) than the first drawn-out portion 6A. Therefore, the length of the freely bending portion of the third portion 630 is long, and the spring constant of the flexible printed circuit board 6 is small.

[0101] In this embodiment, the flexible printed circuit board 6 is provided with shape retaining members 90 and 91 for retaining the bent shape, so that the flexible printed circuit board 6 can be retained in a shape that is easy to bend. The shape retaining member 90 fixed to the bent portion where the first drawn-out portion 6A and the first portion 610 are connected is disposed at a position shifted toward the end of the first drawn-out portion 6A in the +Y direction (the other side of the second direction), and the shape retaining member 90 fixed to the bent portion where the third portion 630 and the second drawn-out portion 6C are connected is disposed at a position shifted toward the end of the second drawn-out portion 6C in the +Y direction (the other side of the second direction). Therefore, the length of the portion that is not hindered by the shape retaining member and can bend freely is long, so that the spring constant of the flexible printed circuit board 6 is small.

[0102] In this embodiment, the first lead section 6A and the second lead section 6C are each composed of one flexible substrate, while the bent section 6B is composed of two flexible substrates (first flexible substrate 600A, second flexible substrate 600B) stacked together. At the end of the first section 610 in the +Y direction (the other side in the second direction), a first joint section 640 is provided in which two flexible substrates are joined with a first reinforcing plate 81 sandwiched between them. The first joint section 640 includes a first folded section 641 that connects the two flexible substrates joined via the first reinforcing plate 81 in a shape folded back in the Z-axis direction (optical axis direction). Similarly, at the end of the third section 630 in the +Y direction (the other side in the second direction), a second joint section 650 is provided in which two flexible substrates are joined with a second reinforcing plate 82 sandwiched between them. The second joint portion 650 includes a second folded portion 651 that connects the two flexible substrates joined via the second reinforcing plate 82 in a shape folded back in the Z-axis direction (optical axis direction) in opposite directions.

[0103] In this way, the flexible substrate branched into two branching parts 601, 602 can be folded back and routed with the branching parts 601, 602 overlapped. Therefore, even when a large-area flexible printed circuit board 6 is required, the height of the bent part 6B in the optical axis direction can be reduced by branching into multiple parts. This allows the height of the arrangement space of the flexible printed circuit board 6 in the optical axis direction to be reduced. In addition, the overlapped flexible substrates (first flexible substrate 600A, second flexible substrate 600B) can bend in a state where they are separated from each other, except for both ends (first joint 640, second joint 650) joined via a reinforcing plate. Therefore, an increase in the spring constant of the flexible printed circuit board can be avoided.

[0104] In this embodiment, the first reinforcing plate 81 disposed at the first joint 640 and the second reinforcing plate 82 disposed at the second joint 650 are disposed at positions shifted toward the ends in the +Y direction (the other side in the second direction) of the first flexible substrate 600A and the second flexible substrate 600B that sandwich the reinforcing plate. This makes it possible to lengthen the length of the portion that can bend freely without being restricted in movement by the reinforcing plate at both ends of the bent portion 6B. Therefore, it is possible to reduce the spring constant of the flexible printed circuit board 6.

[0105] In this embodiment, the fixed body 11 has a rectangular wiring housing 19 arranged in the +X direction (one side in the first direction) of the movable body 10, and the wiring housing 19 has a first wall 191 and a second wall 192 that face each other in the Y-axis direction and extend in the X-axis direction, and a third wall 193 that connects an end of the first wall 191 in the +X direction (one side in the first direction) and an end of the second wall 192 in the +X direction (one side in the first direction) and extends in the second direction. The bent portion 6B extends along the inner surfaces of the first wall 191 and the third wall 193, and the third wall 193 has a notch 193a that is a wiring outlet through which the second lead-out portion 6C passes, and a board fixing portion 6D that fixes the second lead-out portion 6C. Therefore, a space in which the flexible printed circuit board 6 is bent can be secured inside the wiring housing 19. In addition, the flexible printed circuit board 6 can be fixed to the wiring housing portion 19. Therefore, it is possible to prevent an external load from being applied to the connection portion between the movable body 10 and the flexible printed circuit board 6.

[0106] (Variation 1) FIG. 13 is a perspective view of the flexible printed circuit board 106 of the first modification, and FIG. 14 is a development view of the flexible printed circuit board 106 of the first modification. FIG. 14(a) is a development view seen from the +Z side, and FIG. 14(b) is a development view seen from the -Z side. In the above embodiment, the two-branched flat portion 600 is folded back once in the Z-axis direction to form the bent portion 6B, but the height in the Z-axis direction can be further reduced by increasing the number of folds. As shown in FIG. 13 and FIG. 14, in the flexible printed circuit board 106 of the first modification, the bent portion 6B is formed by folding back the flat portion 600 made of one flexible substrate three times in the Z-axis direction.

[0107] Bent portion 6B of modification 1 is configured by laminating three sheets: first flexible substrate 600A, second flexible substrate 600B overlapping first flexible substrate 600A in the +X direction (one side in the first direction) at first portion 610, and third flexible substrate 600C overlapping second flexible substrate 600B in the +X direction (one side in the first direction) at first portion 610. As shown in Fig. 14, flat portion 600 has two slits 609 extending parallel to the Y-axis direction (second direction), and three branch portions 601, 602, 605 extending parallel to the Y-axis direction. Branch portions 601, 602, 605 have the same width. Furthermore, flat portion 600 includes first connection portion 603 connecting ends on the +Y side of three branch portions 601, 602, 605, and second connection portion 604 connecting ends on the -Y side of three branch portions 601, 602, 605. Branch portion 601 constitutes first flexible substrate 600A disposed on the outermost side when bent into the shape of bending portion 6B, branch portion 602 constitutes second flexible substrate 600B, and branch portion 605 constitutes third flexible substrate 600C disposed on the innermost side.

[0108] At the end of the first portion 610 in the +Y direction (the other side in the second direction), a first joint 640 is provided, which is formed by joining three flexible substrates with a reinforcing plate sandwiched between them, and the first joint 640 is formed by folding the first connection portion 603, which is a single flexible substrate, twice in the Z-axis direction.

[0109] Therefore, first joint portion 640 of modification 1 includes two folded portions: first folded portion 641 that connects first flexible substrate 600A and second flexible substrate 600B in a shape folded back from the +Z direction to the -Z direction, and third folded portion 642 that connects second flexible substrate 600B and third flexible substrate 600C in a shape folded back from the -Z direction to the +Z direction. Also, first joint portion 640 of modification 1 includes first reinforcing plate 81 disposed between first flexible substrate 600A and second flexible substrate 600B, and third reinforcing plate 83 disposed between second flexible substrate 600B and third flexible substrate 600C.

[0110] Similarly, at the end of the third portion 630 in the +Y direction (the other side in the second direction), a second joint 650 is provided in which three flexible substrates are joined with a reinforcing plate sandwiched between them, and the second joint 650 is formed by folding the second connection portion 604, which is a single flexible substrate, twice from one side to the other in the Z-axis direction.

[0111] Therefore, second joint portion 650 of modification 1 includes two folded portions: second folded portion 651 that connects first flexible substrate 600A and second flexible substrate 600B in a shape folded back from the +Z direction to the -Z direction, and fourth folded portion 652 that connects second flexible substrate 600B and third flexible substrate 600C in a shape folded back from the -Z direction to the +Z direction. Second joint portion 650 of modification 1 also includes second reinforcing plate 82 disposed between first flexible substrate 600A and second flexible substrate 600B, and fourth reinforcing plate 84 disposed between second flexible substrate 600B and third flexible substrate 600C.

[0112] In the bending portion 6B of the first modified example, at both the first joint portion 640 and the second joint portion 650, the fold portions (third fold portion 642, fourth fold portion 652) located on the inner circumference side have a narrower width in the Y-axis direction (second direction) than the fold portions (first fold portion 641, second fold portion 651) located on the outer circumference side.

[0113] 14, in first connecting portion 603, a width W2 in the Y-axis direction (second direction) of a portion constituting third folded portion 642 is narrower than a width W1 in the Y-axis direction of a portion constituting first folded portion 641. In this embodiment, second connecting portion 604 has a shape symmetrical in the Y-axis direction to first connecting portion 603. Therefore, second connecting portion 604 has a similar configuration, and a width in the Y-axis direction of a portion constituting fourth folded portion 652 is narrower than a width in the Y-axis direction of a portion constituting second folded portion 651.

[0114] Due to such dimensional settings, in the bent portion 6B, the folded portions (third folded portion 642, fourth folded portion 652) arranged on the inner periphery side are narrower in width in the Y-axis direction (second direction) than the folded portions (first folded portion 641, second folded portion 651) arranged on the outer periphery side. Therefore, in the bent portion 6B, of the three flexible substrates bent into a rectangular shape, the flexible substrate arranged on the inner periphery side has a shorter portion connected to the folded portions and restricted in movement, and a longer portion that can bend freely. Therefore, it is possible to suppress an increase in the spring constant of the flexible printed circuit board 106, which is caused by the flexible substrate arranged on the inner periphery side having to deform in a narrower space.

[0115] In addition, in the bent portion 6B of the first modification, in both the first joint portion 640 and the second joint portion 650, the reinforcing plate (third reinforcing plate 83, fourth reinforcing plate 84) arranged on the inner periphery side has a narrower width in the Y-axis direction (second direction) than the reinforcing plate (first reinforcing plate 81, second reinforcing plate 82) arranged on the outer periphery side. Therefore, in the bent portion 6B, among the three flexible substrates bent into a rectangular shape, the flexible substrate arranged on the inner periphery side has a shorter portion fixed to the reinforcing plate and restrained from moving, and a longer portion that can bend freely. Therefore, it is possible to suppress an increase in the spring constant of the flexible printed circuit board 106, which is caused by the flexible substrate arranged on the inner periphery side having to deform in a narrower space.

[0116] In the first modification, similarly to the above embodiment, the first reinforcing plate 81 and the third reinforcing plate 83 arranged at the first joint 640, and the second reinforcing plate 82 and the fourth reinforcing plate 84 arranged at the second joint 650 are all arranged at positions shifted toward the ends in the +Y direction (the other side in the second direction) of the three flexible substrates. Therefore, at both ends of the bending portion 6B, the length of the portion that is not restricted in movement by the reinforcing plates and that can bend freely can be increased, and the spring constant of the flexible printed circuit board 106 can be reduced.

[0117] (Variation 2) FIG. 15 is a perspective view of the flexible printed circuit board 206 of the second modification, and FIG. 16 is a development view of the flexible printed circuit board 206 of the second modification. FIG. 16(a) is a development view seen from the +Z side, and FIG. 16(b) is a development view seen from the -Z side. As shown in FIG. 15 and FIG. 16, in the flexible printed circuit board 206 of the second modification, the bent portion 6B is formed by folding back a flat portion 600 made of a single flexible substrate three times in the Z-axis direction. Since the number of folds is even greater than in the first modification, the height in the Z-axis direction can be further reduced. It is also possible to fold back four or more times.

[0118] Bent portion 6B of modification 2 includes first flexible substrate 600A, second flexible substrate 600B overlapping first flexible substrate 600A in the +X direction (one side in the first direction) at first portion 610, third flexible substrate 600C overlapping second flexible substrate 600B in the +X direction (one side in the first direction) at first portion 610, and third flexible substrate 600C overlapping third flexible substrate 600C in the +X direction (one side in the first direction) at first portion 610. 16, the flat portion 600 includes three slits 609 extending parallel to the Y-axis direction (second direction) and four branch portions 601, 602, 605, 606 extending parallel to the Y-axis direction. The branch portions 601, 602, 605, 606 have the same width. The flat portion 600 also includes a first connection portion 603 that connects the +Y side ends of the four branch portions 601, 602, 605, 606, and a second connection portion 604 that connects the -Y side ends of the four branch portions 601, 602, 605, 606. When bent into the shape of bending portion 6B, branch portion 601 constitutes first flexible substrate 600A which is positioned on the outermost side, branch portion 602 constitutes second flexible substrate 600B, branch portion 605 constitutes third flexible substrate 600C, and branch portion 606 constitutes fourth flexible substrate 600D which is positioned on the innermost side.

[0119] At the end of the first portion 610 in the +Y direction (the other side in the second direction), a first joint 640 is provided, which is formed by joining four flexible substrates with a reinforcing plate sandwiched between them, and the first joint 640 is formed by folding the first connection portion 603, which is a single flexible substrate, three times in the Z-axis direction.

[0120] Therefore, first joint portion 640 of Modification 2 includes, in addition to first folded portion 641 and third folded portion 642 in first joint portion 640 of Modification 1, a fifth folded portion 643 that connects third flexible substrate 600C and fourth flexible substrate 600D in a shape folded back from the +Z direction to the -Z direction. Also, in addition to first reinforcing plate 81 and third reinforcing plate 83 in first joint portion 640 of Modification 1, a fifth reinforcing plate 85 disposed between third flexible substrate 600C and fourth flexible substrate 600D.

[0121] Similarly, at the end of the third portion 630 in the +Y direction (the other side in the second direction), a second joint 650 is provided in which four flexible substrates are joined with a reinforcing plate sandwiched between them, and the second joint 650 is formed by folding the second connection portion 604, which is a single flexible substrate, three times from one side to the other in the Z-axis direction.

[0122] Therefore, second joint portion 650 of modification 2 includes, in addition to second folded portion 651 and fourth folded portion 652 in first joint portion 640 of modification 1, a sixth folded portion 653 that connects third flexible substrate 600C and fourth flexible substrate 600D in a shape folded back from the +Z direction to the -Z direction. Also, in addition to second reinforcing plate 82 and fourth reinforcing plate 84 in second joint portion 650 of modification 1, a sixth reinforcing plate 86 disposed between third flexible substrate 600C and fourth flexible substrate 600D.

[0123] In the bending portion 6B of the modified example 2, in both the first joint portion 640 and the second joint portion 650, the width of the three bending portions located at each joint portion narrows in the Y-axis direction (second direction) from the outer periphery toward the inner periphery.

[0124] 16, in first connecting portion 603, width W3 in the Y-axis direction (second direction) of a portion constituting fifth folded portion 643 (third folded portion of first joint portion), width W2 in the Y-axis direction (second direction) of a portion constituting third folded portion 642, and width W1 in the Y-axis direction of a portion constituting first folded portion 641 narrow in this order, W1, W2, W3. Second connecting portion 604 has a similar configuration, and the width of the folded portion in the Y-axis direction narrows toward the inner periphery of bent portion 6B.

[0125] With such dimension settings, in the bending portion 6B of the second modified example, the four flexible substrates bent into a rectangular shape have a shorter portion connected to the folded portion and restricted in movement, and a longer portion that can bend freely, as they are positioned closer to the inner periphery. Also, the shorter the portion fixed to the reinforcing plate and restricted in movement, the shorter the portion that can bend freely, as they are positioned closer to the inner periphery. Therefore, the flexible substrates have to deform in a narrower space as they are positioned closer to the inner periphery, which causes problems with the size of the flexible substrates. This can suppress an increase in the spring constant of the support substrate 206.

[0126] In the second modification, as in the above embodiments, all the reinforcing plates disposed at the first joint portion 640 and the second joint portion 650 are disposed at positions shifted toward the ends of the four flexible substrates in the +Y direction (the other side in the second direction). Therefore, at both ends of the bent portion 6B, the length of the portion that is not restricted in movement by the reinforcing plates and that can bend freely can be increased, and the spring constant of the flexible printed circuit board 206 can be reduced.

[0127] (Example of changing the bending position of a flexible printed circuit board) 17 is an explanatory diagram showing an example in which the bending position of the flexible printed circuit board 6 is changed in response to a change in the external shape of the optical unit 1 with shake correction function. The external shape of the optical unit 1 with shake correction function may be changed in response to the structure of the device on which the unit is mounted and the installation space. In this case, the flexible printed circuit board 6 can accommodate the change in the external shape of the optical unit 1 with shake correction function by changing the bending position of the bent portion 6B and the connection position with the camera module 2. It is also possible to change the arrangement of the second drawer portion 6C in response to a change in the connector position on the device on which the unit is installed.

[0128] 17(a), 17(b), and 17(c) are schematic diagrams of three types of optical units 1 with shake correction function, each of which has a partially different outer shape of the case 3, and only the outer shape of the case 3 and the planar shapes of the camera module 2 and the flexible printed circuit board 6 are shown. The three types of cases 3 shown in FIG. 17(a), 17(b), and 17(c) have the same shape of the frame portion 18, but have different shapes of the wiring housing portion 19. Hereinafter, the wiring housing portions of each case 3 shown in FIG. 17(a), 17(b), and 17(c) are respectively indicated by reference numerals 19, 19(1), and 19(2). In addition, the bent portions disposed in each wiring housing portion are respectively indicated by reference numerals 6B, 6B(1), and 6B(2). The bent portions 6B, 6B(1), and 6B(2) have the same board shape (length) before bending, and the bending positions at two points are different.

[0129] 17(a) is the same as the case 3 shown in Figures 1, 2, and 3, and the width E1 in the Y-axis direction of the wiring accommodating portion 19 is smaller than the width E0 in the Y-axis direction of the frame portion 18. The wiring accommodating portion 19 is disposed in the center of the frame portion 18 in the Y-axis direction.

[0130] Next, the external shape of the case 3 shown in Fig. 17(b) is a shape that prioritizes shortening the length of the wire housing 19(1) in the X-axis direction. Specifically, the length D2 of the wire housing 19(1) in the X-axis direction is smaller than the length D1 of the wire housing 19 shown in Fig. 17(a). On the other hand, the width E2 of the wire housing 19(1) in the Y-axis direction is larger than the width E1 of the wire housing 19 in the Y-axis direction and is the same as the width E0 of the frame 18 in the Y-axis direction. By adopting such an external shape, the length of the optical unit 1 with shake correction function in the X-axis direction can be shortened.

[0131] In this case, the first bending position between the first portion 610 and the second portion 620 of the bending portion 6B(1) is shifted in the -Y direction from the first bending position of the bending portion 6B. Also, the second bending position between the second portion 620 and the third portion 630 is shifted in the -X direction from the second bending position of the bending portion 6B. By shifting the bending positions in this way, the bending portion 6B(1) has a shape that can be accommodated in the wiring accommodation portion 19(1). Also, in this shape, the second drawing portion 6C is shifted in the +Y direction from the position shown in FIG. 17(a). Although the second portion 620 of the bending portion 6B(1) is short, the first portion 610 and the third portion 630 are long, so that the spring constants in the rolling direction, the yawing direction, and the pitching direction can be kept small.

[0132] Next, the outer shape of the case 3 shown in FIG. 17(c) is a shape that prioritizes reducing the width of the wiring housing portion 19(2) in the Y-axis direction and arranging it toward the end of the frame portion 18 in the -Y direction. Specifically, the width E3 in the Y-axis direction of the wiring housing 19(2) is smaller than the width D1 in the Y-axis direction of the wiring housing 19 shown in Fig. 17(a). On the other hand, the length D3 in the X-axis direction of the wiring housing 19(2) is larger than the length D1 in the X-axis direction of the wiring housing 19. By making the outer shape like this, it is possible to secure installation space for other wiring members and components in the +Y direction of the wiring housing 19(2).

[0133] As shown in Fig. 17(c), when the wiring housing section 19(2) is disposed toward the end in the -Y direction of the frame section 18, the first drawer section 6A and the second drawer section 6C move in the -Y direction from the positions shown in Fig. 17(a). In the example shown in Fig. 17(c), the first drawer section 6A is disposed at a position toward the end in the -Y direction of the camera module 2.

[0134] The bending portion 6B(2) has a first bending position shifted in the -Y direction from the bending portion 6B, similarly to the bending portion 6B(1). This makes the length of the first portion 610 as long as possible. The second bending position is shifted in the +X direction by a large amount from the second bending position in the bending portion 6B. This makes it impossible to lengthen the first portion 610 and the third portion 630, and therefore makes the second portion 620 longer. By shifting the bending position in this way, the bending portion 6B(2) has a shape that can be accommodated in the wiring accommodation portion 19(2). The bending portion 6B(2) has a first portion 610 and a third portion 630 that are short, but the second portion 620 that is long, so that the spring constant in the rolling direction, the yawing direction, and the pitching direction can be kept small.

[0135] As described above, the flexible printed circuit board 6 of this embodiment can accommodate changes in the external shape of the optical unit 1 with shake correction function while maintaining a low spring constant by shifting the bending position and appropriately changing the lengths of the first portion 610, the second portion 620, and the third portion 630 without changing the unfolded shape of the board to form the bent portion 6B. [Explanation of symbols]

[0136] 1...optical unit with shake correction function, 2...camera module, 2a...lens, 2b...imaging element, 3...case, 4...cover, 4a...opening, 5...base, 6, 106, 206...flexible printed circuit board, 6A...first drawer section, 6B, 6B(1), 6B(2)...bent section, 6C...second drawer section, 6D...substrate fixing section, 6E...reinforcing plate, 7...flexible printed circuit board, 8...hook, 9...projection, 10...movable body, 11...fixed body, 12...rotation support mechanism, 13...gimbal mechanism, 14...gimbal frame, 15...first connection mechanism, 16...second connection mechanism, 17...magnetic plate, 18...frame portion, 19, 19(1), 19(2)...wiring housing portion, 20...magnetic drive mechanism for shake correction, 21...first magnetic drive mechanism for shake correction, 21C...first coil, 21M...first magnet, 22...second magnetic drive mechanism for shake correction, 22C...second coil, 22M...second magnet, 23...magnetic drive mechanism for rolling correction, 23C...third coil, 23M...third magnet, 24...holder, 25...first member, 26...first annular plate portion, 26a...circular hole, 27...first extension portion, 28...first protruding plate portion, 29...slit, 30 A...camera module main body, 30B...camera module cylindrical portion, 31...first side wall, 32...second side wall, 33...third side wall, 33a...notch portion, 34...fourth side wall, 35...fifth side wall, 36...sixth side wall, 37...seventh side wall, 38...eighth side wall, 39...holder protrusion, 40...recess, 41...bottom surface, 42...groove portion, 45...second member, 46...second annular plate portion, 47...second extension portion, 48...second protruding plate portion, 49...second slit, 50...metal member, 51...movable body side fixed portion, 52...fixed body side fixed portion, 53...leaf spring portion, 54...first leaf spring portion, 55...second Leaf spring portion, 56...first metal member, 57...second metal member, 58...first notch portion, 59...first edge portion, 60...second notch portion, 61...second edge portion, 62...third notch portion, 63...projection portion, 64...radial stopper portion, 65...optical axis direction stopper portion, 66...extension portion, 69...notch portion, 70...rotation restricting mechanism, 71...first rotation restricting portion, 72...second rotation restricting portion, 81...first reinforcing plate, 82...second reinforcing plate, 83...third reinforcing plate, 84...fourth reinforcing plate, 85...fifth reinforcing plate, 86...sixth reinforcing plate, 90, 91...shape retaining member, 140...gimbal frame main Body portion, 141...first axis side extension portion, 142...second axis side extension portion, 143...opening portion, 144...first axis side concave curved surface, 146...projection portion, 147...second axis side concave curved surface, 148...notch, 151...first gimbal frame receiving member, 152...sphere, 153...first thrust receiving member, 154...plate portion, 155, 156...arm portion, 157...projection portion, 161...recess portion, 162...second gimbal frame receiving member, 163...sphere, 16 4...second thrust receiving member, 165...plate portion, 167...arm portion, 181...first side plate portion, 181a...first coil fixing hole, 182...second side plate portion, 182a...third coil fixing hole, 183...third side plate portion, 183a...notch portion, 184...fourth side plate portion, 184a...second coil fixing hole, 191...first wall portion, 192...second wall portion, 193...third wall portion, 193a...notch portion, 271...first extension portion first portion, 272...first extension portion Installation part second part, 471... Second extension part first part, 472... Second extension part second part, 541... First arm part, 542... Second arm part, 543... Connection part, 544... First joint part, 551... Second joint part, 600 A...first flexible substrate, 600B...second flexible substrate, 600C...third flexible substrate, 600D...fourth flexible substrate, 600...plane portion, 601, 602, 605, 606...branch portion, 603...first connection portion, 604...second connection portion, 609...slit, 610...first portion, 620...second portion, 630...third portion, 640...first joint portion, 641...first folded portion, 642...third folded portion, 643...fifth folded portion, 650...second joint portion, 651...second folded portion, 652...fourth folded portion, 653...sixth folded portion, L...optical axis, R1...first axis, R2...second axis, S...angular position sensor, T1, T2, T3...gaps

Claims

1. a movable body including a camera module; a support mechanism that supports the movable body rotatably about a first axis that intersects with an optical axis of the camera module, and supports the movable body rotatably about a second axis that intersects with the optical axis and the first axis; a fixed body that supports the movable body via the support mechanism; A flexible printed circuit board connected to the movable body, When a direction intersecting the optical axis is defined as a first direction, and a direction intersecting the optical axis direction and the first direction is defined as a second direction, The flexible printed circuit board is a first drawn-out portion drawn out from the movable body to one side in the first direction; a bending portion including a first portion bent from the first lead portion to one side in the optical axis direction and extending to one side in the second direction, a second portion bent from the first portion to one side in the first direction and extending to one side in the first direction, and a third portion bent from the second portion to the other side in the second direction and extending to the other side in the second direction; a second drawn-out portion bent from an end of the third portion on one side or the other side in the optical axis direction toward one side in the first direction and drawn out from the fixed body, The optical unit with shake correction function, wherein the second drawer portion is disposed on the other side of the first drawer portion in the second direction.

2. a movable body including a camera module; a support mechanism that supports the movable body rotatably about a first axis that intersects with an optical axis of the camera module, and supports the movable body rotatably about a second axis that intersects with the optical axis and the first axis; a fixed body that supports the movable body via the support mechanism; A flexible printed circuit board connected to the movable body, When a direction intersecting the optical axis is defined as a first direction, and a direction intersecting the optical axis direction and the first direction is defined as a second direction, The flexible printed circuit board is a first drawn-out portion drawn out from the movable body to one side in the first direction; The first lead-out portion is bent toward one side in the optical axis direction and extends toward one side in the second direction. a bending portion including a first portion bent toward one side in the first direction from the first portion and extending toward the one side in the first direction, and a third portion bent toward the other side in the second direction from the second portion and extending toward the other side in the second direction; a second drawn-out portion bent from an end of the third portion on one side or the other side in the optical axis direction toward one side in the first direction and drawn out from the fixed body, a shape retention member that retains the flexible printed circuit board in a bent shape, An optical unit with shake correction function, characterized in that the shape retention member fixed to the bend portion connecting the first drawer portion and the first part is positioned at a position biased toward the other end of the first drawer portion in the second direction.

3. The optical unit with shake correction function described in claim 2, characterized in that the shape retention member fixed to the bent portion connecting the third portion and the second drawer portion is positioned at a position biased toward the other end of the second drawer portion in the second direction.

4. a movable body including a camera module; a support mechanism that supports the movable body rotatably about a first axis that intersects with an optical axis of the camera module, and supports the movable body rotatably about a second axis that intersects with the optical axis and the first axis; a fixed body that supports the movable body via the support mechanism; A flexible printed circuit board connected to the movable body, When a direction intersecting the optical axis is defined as a first direction, and a direction intersecting the optical axis direction and the first direction is defined as a second direction, The flexible printed circuit board is a first drawn-out portion drawn out from the movable body to one side in the first direction; a bending portion including a first portion bent from the first lead portion to one side in the optical axis direction and extending to one side in the second direction, a second portion bent from the first portion to one side in the first direction and extending to one side in the first direction, and a third portion bent from the second portion to the other side in the second direction and extending to the other side in the second direction; a second drawn-out portion bent from an end of the third portion on one side or the other side in the optical axis direction toward one side in the first direction and drawn out from the fixed body, the first lead portion and the second lead portion are formed of a single flexible substrate, The bending portion is configured by laminating a plurality of the flexible substrates, a first joint portion is provided at an end of the first portion on the other side in the second direction, the first joint portion being formed by sandwiching a first reinforcing plate between the flexible substrates and joining the flexible substrates; the first joint portion includes a first folded portion that connects the flexible substrate joined via the first reinforcing plate in a shape folded back in the optical axis direction, a second joint portion is provided at an end of the third portion on the other side in the second direction, the second joint portion being formed by sandwiching a second reinforcing plate between the flexible substrates and joining the flexible substrates; the second joint portion includes a second folded portion that connects the flexible substrate joined via the second reinforcing plate in a shape folded back in the optical axis direction, the plurality of flexible substrates include a first flexible substrate, a second flexible substrate overlapping one side of the first flexible substrate in the first direction in the first portion, and a third flexible substrate overlapping one side of the second flexible substrate in the first direction in the first portion, The first joint portion is a first folding portion that connects the first flexible substrate and the second flexible substrate in a folded shape from one side to the other side in the optical axis direction, and a third folding portion that connects the second flexible substrate and the third flexible substrate in a folded shape from the other side to one side in the optical axis direction, The optical unit with shake correction function, wherein the third folded portion has a narrower width in the second direction than the first folded portion.

5. The second joint portion is a second folding portion that connects the first flexible substrate and the second flexible substrate in a folded shape from one side to the other side in the optical axis direction, and a fourth folding portion that connects the second flexible substrate and the third flexible substrate in a folded shape from the other side to one side in the optical axis direction, 5. The optical unit with shake correction function according to claim 4, wherein the fourth folded portion has a width in the second direction narrower than that of the second folded portion.

6. the first reinforcing plate disposed at the first joint portion is disposed at a position shifted toward an end of the flexible substrate on the other side in the second direction between the first reinforcing plate and the flexible substrate, The optical unit with shake correction function described in claim 4 or 5, characterized in that the second reinforcing plate arranged at the second joint is arranged at a position shifted toward the other end of the flexible substrate sandwiching the second reinforcing plate in the second direction.

7. At the first joint, the first reinforcing plate is disposed between the first flexible substrate and the second flexible substrate, and a third reinforcing plate is disposed between the second flexible substrate and the third flexible substrate; 7. The optical unit with shake correction function according to claim 6, wherein the third reinforcing plate has a width in the second direction narrower than that of the first reinforcing plate.

8. At the second joint, the second reinforcing plate is disposed between the first flexible substrate and the second flexible substrate, and a fourth reinforcing plate is disposed between the second flexible substrate and the third flexible substrate; 8. The optical unit with shake correction function according to claim 7, wherein the fourth reinforcing plate has a width in the second direction narrower than that of the second reinforcing plate.

9. 9. The optical unit with shake correction function according to claim 1, wherein the first drawer portion is disposed at a position shifted toward an end of the movable body on the other side in the second direction.

10. the fixed body includes a wiring housing portion disposed on one side of the movable body in the first direction, the wiring housing portion includes a first wall portion and a second wall portion which face each other in the second direction and extend in the first direction, and a third wall portion which connects an end of the first wall portion on one side in the first direction and an end of the second wall portion on one side in the first direction and extends in the second direction, the bent portion extends along an inner surface of the first wall portion and the third wall portion, The optical unit with shake correction function described in any one of claims 1 to 9, characterized in that the third wall portion has a wiring outlet through which the second draw-out portion passes, and a substrate fixing portion for fixing the second draw-out portion.

11. The support mechanism includes: a rotation support mechanism that supports the movable body so that the movable body can rotate about the optical axis; An optical unit with shake correction function as described in any one of claims 1 to 10, characterized in that it is provided with a gimbal mechanism that rotatably supports the movable body and the rotational support mechanism around a first axis that intersects the optical axis, and rotatably supports the movable body and the rotational support mechanism around a second axis that intersects the optical axis and also intersects the first axis.

Images