JP2023182069A - Optical unit with vibration correction function - Google Patents

Abstract

To provide an optical unit with a vibration correction function for easily fixing a wiring board drawn from a movable body to a fixed body.SOLUTION: In an optical unit with a vibration correction function, a wiring board 10 which is drawn from a movable body 3 includes: a module drawing part 31d which is drawn from a camera module 2; a coil connection part 30a in which a drive coil is connected; a movable side fixed part 30b which is fixed to a holder 15 of the movable body 3; a fixed side fixed part 30c which is fixed to a solid body; and a belt-like part 30d which connects the movable side fixed part 30b and the fixed side fixed part 30c. The module drawing part 31d and the coil connection part 30a are connected to the movable side fixed part 30b, which is fixed to the holder 15.SELECTED DRAWING: Figure 4

Description

The present invention relates to an optical unit with a shake correction function used in a small camera.

2. Description of the Related Art Conventionally, an optical unit with a shake correction function installed in a mobile device or the like has been known (see, for example, Patent Document 1). The optical unit with a shake correction function described in Patent Document 1 includes a movable body (movable module) having a camera module (optical module), a fixed body that swingably holds the movable body via a gimbal mechanism, and a driving body. A shake correction drive mechanism that has a magnet and a drive coil and swings a movable body relative to a fixed body, a flexible printed circuit board for the module that supplies power to the camera module, and a module that supplies power to the drive coil. It is equipped with a flexible printed circuit board for the coil.

In the optical unit with a shake correction function described in Patent Document 1, the movable body includes a frame to which a camera module is fixed. The fixed body includes a case that surrounds the outer peripheral side of the movable body, and a first bottom plate that covers the bottom surface of the case. The driving magnet is held in a case of a fixed body, and the driving coil is held in a frame of a movable body. The flexible printed circuit board for the coil and the flexible printed circuit board for the module are pulled out from the movable body.

In the optical unit with a shake correction function described in Patent Document 1, the flexible printed circuit board for the coil includes a rectangular frame portion to which the drive coil is connected, and a band-shaped routing portion drawn out from the rectangular frame portion. The rectangular frame portion is fixed to the frame of the movable body. A portion of the routing portion is fixed to the first bottom plate of the fixed body. The flexible printed circuit board for the module includes a lead-out portion that is pulled out from the camera module. A portion of this routing portion is fixed to the first bottom plate.

International Publication No. 2015/045791

In the optical unit with shake correction function described in Patent Document 1, the initial inclination of the movable body with respect to the fixed body (i.e., the current Since the tilt of the optical axis of the camera module with respect to the fixed body changes when the coil is not supplied, the initial position of the movable body with respect to the fixed body varies depending on the fixed position of the flexible printed circuit board for the coil to the first bottom plate. The slope of changes. In addition, in this optical unit with shake correction function, the initial inclination of the movable body with respect to the fixed body varies depending on how the flexible printed circuit board for the module is pulled out from the movable body. The initial inclination of the movable body with respect to the fixed body also varies depending on the fixed position of the board routing portion to the first bottom plate.

Therefore, in the optical unit with a shake correction function described in Patent Document 1, when the lead-out portions of two flexible printed circuit boards pulled out from the movable body are fixed to the fixed body, the inclination of the movable body with respect to the fixed body is set to a predetermined standard. The two wiring parts must be fixed to the fixed body while adjusting the fixing position of the wiring part of the flexible printed circuit board for the coil and the securing position of the leading part of the flexible printed circuit board for the module so that they fit within the fixed body. Must be. Therefore, in this optical unit with a shake correction function, the work of fixing the flexible printed circuit board pulled out from the movable body to the fixed body becomes complicated.

SUMMARY OF THE INVENTION An object of the present invention is to provide an optical unit with a shake correction function that includes a movable body having a camera module, a fixed body that rotatably holds the movable body, and a wiring board that is pulled out from the movable body. It is an object of the present invention to provide an optical unit with a shake correction function, which can easily fix a wiring board that is pulled out to a fixed body.

In order to solve the above problems, the optical unit with a shake correction function of the present invention includes a movable body having a camera module, a fixed body that rotatably holds the movable body, and an optical axis of the camera module that can be rotated in any direction. The movable body includes a magnetic drive mechanism for rotating the movable body relative to the fixed body so as to tilt, and a wiring board pulled out from the movable body, the movable body includes a holder to which the camera module is fixed, and the magnetic drive mechanism The wiring board includes a driving magnet fixed to a fixed body and a driving coil arranged opposite to the driving magnet and fixed to the holder, and the wiring board includes a module drawer portion pulled out from the camera module and a driving coil. A coil connecting part to which is connected, a movable part to be fixed to the holder, a fixed part to be fixed to the fixed body, and a band-shaped part connecting the movable part to the fixed part to the fixed part. The present invention is characterized in that the belt-shaped part is made of a flexible printed circuit board, and the module draw-out part and the coil connection part are connected to the movable fixed part.

In the optical unit with shake correction function of the present invention, the wiring board pulled out from the movable body is fixed to the module pullout part pulled out from the camera module, the coil connection part to which the drive coil is connected, and the holder of the movable body. It includes a movable side fixed part, a fixed side fixed part fixed to the fixed body, and a band-shaped part connecting the movable side fixed part and the fixed side fixed part. Further, in the present invention, the module drawer part and the coil connecting part are connected to the movable fixed part fixed to the holder. Therefore, in the present invention, it is the routing of the band portion that influences the initial inclination of the movable body with respect to the fixed body.

Therefore, in the present invention, by adjusting the fixing position of the fixed side fixed portion to the fixed body, it is possible to adjust the initial inclination of the movable body with respect to the fixed body. As a result, in the present invention, it is possible to fix the fixed side fixed part to the fixed body while adjusting only the fixing position of the fixed side fixed part so that the inclination of the movable body with respect to the fixed body falls within a predetermined standard. It becomes possible. Therefore, in the present invention, it becomes possible to easily perform the work of fixing the wiring board pulled out from the movable body to the fixed body.

Furthermore, in the present invention, since the strip of the wiring board is pulled out from the movable body without overlapping with other wiring boards, two flexible prints can be used as in the optical unit with shake correction function described in Patent Document 1. Compared to the case where the wiring board is pulled out from the movable body in duplicate, it is possible to eliminate wasted wiring boards and reduce the cost of the optical unit with a shake correction function.

In the present invention, it is preferable that the movable side fixed part is configured by a rigid board or a flexible printed circuit board, and is fixed to a flat reinforcing plate. With this configuration, the state of the movable side fixed part fixed to the holder can be stabilized compared to the case where the movable side fixed part is composed of a flexible printed circuit board and is not fixed to the reinforcing plate. becomes possible. Therefore, it becomes possible to stabilize the state of the module drawer part and the coil connection part connected to the movable fixed part.

In the present invention, the wiring board preferably includes a first connector mounted on the movable fixed part and a second connector mounted on the module drawer part and connected to the first connector. With this configuration, after fixing the movable side fixed part to the holder and fixing the fixed side fixed part to the fixed body and confirming the routing of the band part, the camera module is fixed to the holder and the module drawer is fixed. can be connected to the movable fixed part. Therefore, it becomes possible to increase the degree of freedom in the assembly process of the optical unit with a shake correction function.

In addition, in the present invention, since the movable side fixed part is fixed to the holder, the movable side fixed part is fixed to the holder, and the fixed side fixed part is fixed to the fixed body to determine the routing of the band-shaped part. Even if the camera module is later fixed to the holder and the module drawer is connected to the movable fixed part, it is possible to prevent the initial tilt of the movable body relative to the fixed body from changing due to the influence of the wiring board. . Therefore, even when the camera module is not fixed to the holder and the module drawer is not connected to the movable side fixed part, the fixed side fixed part is fixed so that the tilt of the movable body with respect to the fixed body is within the predetermined standard. It becomes possible to fix it to a fixed body.

In the present invention, if one side in the optical axis direction, which is the direction of the optical axis of the camera module, is the subject side, and the opposite side to the subject side is the opposite side to the subject, for example, the movable side fixed part is the movable side fixed part. The first connector is mounted on the surface of the movable fixed part on the side opposite to the subject, and the second connector is mounted on the surface of the module drawer part on the subject side. has been implemented. In this case, the camera module is attached to the holder from the side opposite to the subject of the holder.

In the present invention, for example, the coil connection portion is configured by a flexible printed circuit board.

As described above, in the optical unit with shake correction function of the present invention, it becomes possible to easily perform the work of fixing the wiring board pulled out from the movable body to the fixed body.

FIG. 1 is a perspective view of an optical unit with a shake correction function according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the optical unit with shake correction function shown in FIG. 1. FIG. FIG. 2 is a plan view of the optical unit with shake correction function shown in FIG. 1 with the case removed. FIG. 2 is a perspective view of the movable body, wiring board, etc. shown in FIG. 1 taken out and shown from a different direction. 5 is an exploded perspective view of the camera module and wiring board shown in FIG. 4. FIG.

Embodiments of the present invention will be described below with reference to the drawings.

(Overall configuration of optical unit with shake correction function)
FIG. 1 is a perspective view of an optical unit 1 with a shake correction function according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the optical unit 1 with shake correction function shown in FIG. 1. FIG. 3 is a plan view of the optical unit 1 with shake correction function shown in FIG. 1 with the case 17 removed.

In the following explanation, as shown in FIG. 1, etc., the three mutually orthogonal directions are referred to as the X direction, Y direction, and Z direction, and the X direction is the left-right direction, the Y direction is the front-back direction, and the Z direction is the up-down direction. . In addition, one side in the left-right direction, the X1 direction side in FIG. 1, etc., is defined as the "right" side, the opposite side, the X2 direction side in FIG. The Y1 direction side of 1st class is the "front" side, the opposite side of the Y2 direction of FIG. 1 etc. is the "rear" side, and the Z1 direction side of FIG. The opposite side, the Z2 direction side in FIG. 1, etc., is the "lower" side.

The optical unit 1 with image stabilization function (hereinafter referred to as "optical unit 1") of this embodiment is a small unit used in a small camera such as a body camera, and includes a photographing lens and an image sensor. The camera module 2 is equipped with a camera module 2 having the following functions. The optical unit 1 has a shake correction function to avoid disturbances in the captured image when shake occurs during photographing.

The optical unit 1 includes a movable body 3 having a camera module 2, an intermediate member 4 that rotatably holds the movable body 3, and a fixed body 5 (see FIG. 1) that rotatably holds the intermediate member 4. We are prepared. The movable body 3 is rotatable with respect to the intermediate member 4 with the first intersecting direction (direction V in FIG. 3) intersecting the optical axis L of the camera module 2 as the axial direction of rotation. That is, the movable body 3 is rotatable relative to the intermediate member 4 about the first axis L1 (see FIG. 3) whose axis direction is the first intersecting direction. The first intersecting direction in this embodiment is perpendicular to the optical axis L.

The intermediate member 4 is rotatable with respect to the fixed body 5 with a second intersecting direction (W direction in FIG. 3) intersecting the first intersecting direction and intersecting the optical axis L of the camera module 2 as an axial direction of rotation. It becomes. That is, the intermediate member 4 is rotatable relative to the fixed body 5 about a second axis L2 (see FIG. 3) whose axial direction is the second intersecting direction. In this embodiment, the second intersecting direction is perpendicular to the first intersecting direction. In this way, a two-axis gimbal mechanism is configured between the movable body 3 and the fixed body 5.

In this embodiment, when no current is supplied to drive coils 25 and 27 (described later), the movable body 3 and the intermediate member 4 are placed at a predetermined reference position, and the camera module 2 is placed at a predetermined reference position. has been done. When the camera module 2 is in the reference position, the optical axis direction, which is the direction of the optical axis L of the camera module 2, coincides with the vertical direction in terms of design. Note that when shake correction is performed, the inclination of the optical axis L of the camera module 2 with respect to the vertical direction is slight. Therefore, the optical axis direction of the camera module 2 substantially coincides with the vertical direction.

Furthermore, when the movable body 3 is placed at a predetermined reference position, the second intersecting direction (W direction) is perpendicular to the optical axis L. That is, when the movable body 3 is placed at a predetermined reference position and is not rotating with respect to the intermediate member 4, the second intersecting direction is perpendicular to the optical axis L. On the other hand, when the movable body 3 is rotating relative to the intermediate member 4, the second intersecting direction intersects the optical axis L, but does not intersect at right angles. The second intersecting direction (W direction) is a direction shifted by about 45° clockwise in FIG. 3 with respect to the front-rear direction when viewed from above.

The optical unit 1 includes magnetic drive mechanisms 8 and 9 for rotating the movable body 3 with respect to the fixed body 5 so that the optical axis L of the camera module 2 is tilted in an arbitrary direction (see FIG. 3). . Further, the optical unit 1 includes a wiring board 10 drawn out from the movable body 3. At both ends of the intermediate member 4 in the first intersecting direction, first fulcrum portions 12 that serve as fulcrums for rotation of the movable body 3 with respect to the intermediate member 4 are arranged. At both ends of the intermediate member 4 in the second intersecting direction, second fulcrum portions 13 that serve as fulcrums for rotation of the intermediate member 4 with respect to the fixed body 5 are arranged.

The movable body 3 includes a holder 15 to which the camera module 2 is fixed, and a balancer 16 for adjusting the center of gravity of the movable body 3. The holder 15 is made of resin material. The holder 15 includes a cylindrical tube portion 15a and an outer peripheral wall portion 15b disposed on the outer circumferential side of the tube portion 15a. The balancer 16 is made of a metal material such as stainless steel. The balancer 16 is formed by rolling an elongated rectangular metal plate into a circular shape in the direction of the long side of the metal plate. The balancer 16 is fixed to the upper end side of the cylindrical portion 15a of the holder 15.

The camera module 2 is fixed to the inner peripheral surface of the cylindrical portion 15a so that the outer peripheral side of a part of the camera module 2 is covered by the holder 15. The upper end of the camera module 2 is arranged above the upper end of the cylindrical portion 15a. The lower end of the camera module 2 is arranged below the lower end of the holder 15. A plurality of protrusions 2a that protrude downward are formed at the lower end of the camera module 2. For example, four protrusions 2a are formed at the lower end of the camera module 2.

As described above, the camera module 2 includes a lens and an image sensor. The image sensor is arranged at the lower end side of the camera module 2, and a subject arranged above the camera module 2 is photographed by the camera module 2. Furthermore, as described above, when shake correction is performed, the inclination of the optical axis L of the camera module 2 with respect to the vertical direction is slight, and the optical axis direction of the camera module 2 substantially coincides with the vertical direction. Therefore, one side of the camera module 2 in the optical axis direction (specifically, the side where the subject is placed in the optical axis direction of the camera module 2) is the subject side, and the opposite side of the subject side (specifically, the side where the subject is placed) Assuming that the side on which the image sensor is arranged in the optical axis direction of the module 2 is the side opposite to the subject, the subject side almost coincides with the upper side, and the side opposite to the subject almost coincides with the lower side.

The intermediate member 4 is made of a metal material such as stainless steel. The intermediate member 4 is formed into an octagonal frame shape. The intermediate member 4 is disposed on the outer peripheral side of the cylindrical portion 15a of the holder 15 and on the inner peripheral side of the outer peripheral wall portion 15b.

The fixed body 5 rotatably holds the movable body 3 via the intermediate member 4. The fixed body 5 includes a case 17 that covers the holder 15 from the outer peripheral side, and a cover 18 fixed to the case 17. Case 17 is made of resin material. The intermediate member 4 is rotatably held by the case 17. The case 17 includes a cylindrical portion 17a that covers the holder 15 from the outer peripheral side, and an upper surface portion 17b that constitutes the upper surface of the case 17.

The upper surface portion 17b constitutes the upper surface of the optical unit 1. The upper surface portion 17b is connected to the upper end of the cylindrical portion 17a. A circular through hole is formed in the upper surface portion 17b. The upper end portion of the camera module 2 is arranged in this through hole. The upper surface portion 17b covers the drive mechanisms 8, 9, the first fulcrum portion 12, the second fulcrum portion 13, etc. from above. A notch 17c for routing the wiring board 10 is formed in the right front portion of the cylindrical portion 17a. A board fixing part 17d is formed on the left front side of the cylindrical part 17a, to which a fixed side fixed part 30c, which will be described later, and which forms a part of the wiring board 10 is fixed.

Cover 18 is made of metal material. The cover 18 constitutes the lower surface and side surfaces of the optical unit 1. The cover 18 includes a flat bottom portion 18a disposed below the cylindrical portion 17a of the case 17, and a cylindrical portion 18b rising upward from the bottom portion 18a. The bottom portion 18a is arranged so that the thickness direction of the bottom portion 18a matches the vertical direction. The upper surface of the bottom portion 18a is in contact with the lower end surface of the cylindrical portion 17a. The cylindrical portion 18b covers the cylindrical portion 17a of the case 17 from the outer peripheral side. The upper end of the cylindrical portion 18b is in contact with the lower surface of the upper surface portion 17b of the case 17. A notch 18c is formed in the cylindrical portion 18b for arranging the board fixing portion 17d of the case 17 and for drawing out the wiring board 10 toward the outer circumferential side of the optical unit 1.

The first fulcrum portion 12 includes a leaf spring 20 fixed to the holder 15 and spheres 21 (see FIG. 2) fixed to both ends of the intermediate member 4 in the first intersecting direction. The leaf spring 20 includes a fixed part 20a fixed to the holder 15 and a spring part 20b connected to the fixed part 20a. The fixed portion 20a is fixed to the inner circumferential side of the outer circumferential wall portion 15b of the holder 15. The spring portion 20b is placed inside the fixed portion 20a and outside the sphere 21 in the first intersecting direction. A recessed portion in which a part of the sphere 21 is arranged is formed in the spring portion 20b. This recessed portion is depressed toward the outside in the first intersecting direction. Due to the spring properties of the spring portion 20b, the sphere 21 contacts the bottom surface of the concave portion of the spring portion 20b from the inside in the first intersecting direction with a predetermined contact pressure.

The second fulcrum portion 13 includes a leaf spring 22 fixed to the case 17 and spheres 23 (see FIG. 2) fixed to both ends of the intermediate member 4 in the second intersecting direction. The plate spring 22 includes a fixed portion 22a fixed to the case 17 and a spring portion 22b connected to the fixed portion 22a. The fixed portion 22a is fixed to the inner peripheral side of the cylindrical portion 17a of the case 17. The spring portion 22b is placed inside the fixed portion 22a and outside the sphere 23 in the second intersecting direction. A recessed portion in which a part of the sphere 23 is arranged is formed in the spring portion 22b. This recessed portion is depressed toward the outside in the second intersecting direction. Due to the spring properties of the spring portion 22b, the sphere 23 contacts the bottom surface of the concave portion of the spring portion 22b from the inside in the second intersecting direction with a predetermined contact pressure.

The magnetic drive mechanism 8 includes a drive magnet 24 and a drive coil 25 that are arranged to face each other in the left-right direction. The magnetic drive mechanism 9 includes a drive magnet 26 and a drive coil 27 that are arranged to face each other in the front-rear direction. The driving magnets 24 and 26 are formed into rectangular flat plates. The driving magnets 24 and 26 are fixed to the fixed body 5. The drive coils 25 and 27 are, for example, air-core coils formed by winding conductive wires in an air-core shape. The drive coils 25 and 27 are fixed to the movable body 3.

The driving magnet 24 is fixed to the inner peripheral surface of the cylindrical portion 17a of the case 17. The drive coil 25 is fixed to the outer surface of the outer peripheral wall portion 15b of the holder 15. In this embodiment, the driving magnet 24 and the driving coil 25 are arranged to face each other on both sides of the holder 15 in the left-right direction. The magnetic drive mechanism 8 rotates the movable body 3 with respect to the fixed body 5 around an axis perpendicular to the optical axis L of the camera module 2 and parallel to the front-rear direction.

The driving magnet 26 is fixed to the inner peripheral surface of the cylindrical portion 17a of the case 17. The drive coil 27 is fixed to the outer surface of the outer peripheral wall portion 15b of the holder 15. In this embodiment, a driving magnet 26 and a driving coil 27 are arranged to face each other on both sides of the holder 15 in the front-rear direction. The magnetic drive mechanism 9 rotates the movable body 3 relative to the fixed body 5 around an axis perpendicular to the optical axis L of the camera module 2 and parallel to the left-right direction.

In the optical unit 1, when a change in the inclination of the movable body 3 is detected by a predetermined detection mechanism for detecting a change in the inclination of the movable body 3, the drive coil 25 and A current is supplied to at least one of the driving coils 27 to correct vibration. The magnetic drive mechanisms 8 and 9 rotate the movable body 3 relative to the fixed body 5 around at least one of the first axis L1 and the second axis L2 as a rotation center. In this embodiment, the lower end of the protrusion 2a of the camera module 2 comes into contact with the upper surface of the bottom 18a of the cover 18, thereby changing the rotation range of the movable body 3 relative to the fixed body 5 and the movable body 3 in the optical axis direction of the camera module 2. movement range is regulated.

(Wiring board configuration and routing)
FIG. 4 is a perspective view of the movable body 3, the wiring board 10, etc. shown in FIG. 1 taken out and shown from a different direction. FIG. 5 is an exploded perspective view of the camera module 2 and wiring board 10 shown in FIG. 4.

The wiring board 10 includes a first wiring board 30 on which drive coils 25 and 27 are mounted, and a second wiring board 31 drawn out from the camera module 2. The first wiring board 30 and the second wiring board 31 are formed separately. The first wiring board 30 and the second wiring board 31 include a connector 32 (see FIG. 5) as a first connector mounted on the first wiring board 30, and a connector 32 (see FIG. 5) that is mounted on the second wiring board 31 and serves as a first connector. It is connected by a connector 33 (see FIG. 2) as a second connector to be connected. That is, the wiring board 10 includes connectors 32 and 33. One of the connectors 32 and 33 is a male connector, and the other of the connectors 32 and 33 is a female connector.

The first wiring board 30 is a rigid-flexible board in which a flexible printed board and a rigid board are integrated. The first wiring board 30 includes a coil connecting portion 30a to which the driving coils 25 and 27 are connected, a movable fixed portion 30b fixed to the holder 15, and a fixed fixed portion 30c fixed to the case 17. , a belt-shaped part 30d connecting the movable side fixed part 30b and the fixed side fixed part 30c, and a drawer part 30e drawn out to the outer circumferential side of the fixed body 5.

The first wiring board 30 of this embodiment includes four coil connecting parts 30a, one movable fixed part 30b, one fixed fixed part 30c, one strip part 30d, and one pullout part. 30e. The coil connecting portion 30a, the movable fixed portion 30b, the fixed fixed portion 30c, the strip portion 30d, and the pull-out portion 30e are integrally formed. The coil connecting portion 30a is made of a flexible printed circuit board. The drive coils 25 and 27 are mounted on the coil connection portion 30a. The coil connecting portion 30a is attached and fixed to the outer surface of the outer peripheral wall portion 15b of the holder 15.

The movable fixed portion 30b is made of a rigid substrate. The movable fixed portion 30b is formed into an annular and flat plate shape. The movable fixed portion 30b is attached and fixed to the surface (lower surface) of the holder 15 on the side opposite to the subject. For example, the movable fixed portion 30b is attached to the surface of the holder 15 on the side opposite to the subject using an adhesive. The surface of the holder 15 on the side opposite to the subject is a plane perpendicular to the optical axis direction of the camera module 2, and the movable fixed part 30b is connected to the thickness direction of the movable fixed part 30b and the light of the camera module 2. They are arranged so that the axial directions coincide with each other. The movable fixed portion 30b is sandwiched between the lower end portion of the camera module 2 and the holder 15 in the optical axis direction of the camera module 2.

The coil connecting portion 30a is connected to the movable fixed portion 30b. Specifically, the coil connecting portions 30a are connected to a total of four locations: two locations at both ends of the movable fixed portion 30b in the left-right direction and two locations at both ends of the movable fixed portion 30b in the front-rear direction. The connector 32 is mounted on the movable fixed portion 30b. Specifically, the connector 32 is mounted on the surface of the movable fixed portion 30b on the side opposite to the subject. More specifically, the connector 32 is mounted on the front right portion of the surface of the movable fixed portion 30b on the side opposite to the subject, which is one side in the first intersecting direction.

The fixed side fixed part 30c is made of a rigid board. The fixed side fixed portion 30c is formed in a rectangular flat plate shape. The fixed side fixed part 30c is fixed to the board fixing part 17d of the case 17. The fixed side fixed part 30c is arranged so that the thickness direction of the fixed side fixed part 30c coincides with the second intersecting direction. The drawer portion 30e is made of a flexible printed circuit board. The drawer portion 30e is formed in an elongated strip shape whose width direction is the first intersecting direction. The drawer portion 30e is connected to the lower end of the fixed side fixed portion 30c. The drawer portion 30e extends from the lower end of the fixed side fixed portion 30c toward the front left side. A portion of the drawer portion 30e is disposed within the notch 18c of the cover 18.

The strip portion 30d is made of a flexible printed circuit board. The strip portion 30d is formed in an elongated strip shape. The strip portion 30d is pulled out from the movable fixed portion 30b. The band-shaped portion 30d is pulled out from the movable fixed portion 30b to the front right side, which is one side in the first intersecting direction, and then pulled toward the front left side, which is one side in the second intersecting direction. It is routed toward the left rear side, which is the other side in the one-crossing direction. Further, the band-shaped portion 30d is routed along the inner circumferential surface of the cylindrical portion 18b of the cover 18. The strip portion 30d is not fixed to either the movable body 3 or the fixed body 5.

The strip portion 30d includes a first strip portion 30f that has one end connected to the movable side fixed portion 30b, a second strip portion 30g that has one end connected to the other end of the first strip portion 30f, and the other end of the second strip portion 30g. It is composed of a third band-shaped portion 30h that is connected at one end. The first strip portion 30f is arranged such that the thickness direction of the first strip portion 30f and the optical axis direction of the camera module 2 substantially match. The first band-shaped portion 30f extends from the movable fixed portion 30b toward the front right side. A portion of the first band-shaped portion 30f is disposed within the notch 17c of the case 17. At the boundary between the first strip section 30f and the second strip section 30g, the strip section 30d is bent upward at 90 degrees. A thin L-shaped reinforcing plate 35 is fixed to the boundary between the first strip portion 30f and the second strip portion 30g to maintain the shape of the strip portion 30d.

The second strip portion 30g is arranged such that the thickness direction of the second strip portion 30g substantially coincides with the first intersecting direction. The second strip portion 30g extends from the first strip portion 30f toward the front left side. At the boundary between the second strip portion 30g and the third strip portion 30h, the strip portion 30d is bent at 90° toward the left rear side. A reinforcing plate 35 for maintaining the shape of the strip portion 30d is fixed at the boundary between the second strip portion 30g and the third strip portion 30h. The third strip portion 30h is arranged such that the thickness direction of the third strip portion 30h substantially coincides with the second intersecting direction. The third band portion 30h extends from the second band portion 30g toward the rear left side. The third band-shaped portion 30h is connected to the right front portion of the fixed side fixed portion 30c.

The second wiring board 31 is a rigid flexible board. The second wiring board 31 includes an image sensor mounting section 31a on which the image sensor of the camera module 2 is mounted, a drawer section 31b that has one end connected to the image sensor mounting section 31a, and a connected section that connects to the other end of the drawer section 31b. 31c. The image sensor mounting section 31a and the connected section 31c are configured by a rigid board. The drawer portion 31b is made of a flexible printed circuit board. The image sensor mounting section 31a is fixed to the lower end of the camera module 2. The image sensor mounting portion 31a is arranged such that the thickness direction of the image sensor mounting portion 31a and the optical axis direction of the camera module 2 coincide. The image sensor is mounted on the subject-side surface of the image sensor mounting section 31a.

The drawer portion 31b is connected to the right front portion of the image sensor mounting portion 31a. The connected portion 31c is formed into a rectangular flat plate shape. The connected portion 31c is connected to the right front end portion of the drawer portion 31b. The connected portion 31c is arranged such that the thickness direction of the connected portion 31c and the optical axis direction of the camera module 2 substantially match. The connected portion 31c overlaps the right front portion of the movable fixed portion 30b in the optical axis direction of the camera module 2. The connected portion 31c is arranged on the side opposite to the subject of the right front portion of the movable fixed portion 30b.

In this embodiment, a module drawer portion 31d drawn out from the camera module 2 is configured by the drawer portion 31b and the connected portion 31c. The connector 33 is mounted on the object-side surface of the connected portion 31c. That is, the connector 33 is mounted on the subject-side surface of the module drawer portion 31d. The module drawer portion 31d is connected to the movable fixed portion 30b. Specifically, the connected portion 31c of the module drawer portion 31d is connected to the movable fixed portion 30b via connectors 32 and 33.

When assembling the optical unit 1, components other than the camera module 2, second wiring board 31, and cover 18 are first assembled. Thereafter, the camera module 2 with the second wiring board 31 attached is assembled. At this time, the camera module 2 is inserted into the inner circumferential side of the cylindrical portion 15a of the holder 15 and the inner circumferential side of the movable fixed portion 30b from the side opposite to the subject. Furthermore, the connector 32 and the connector 33 are connected to connect the module drawer portion 31d to the movable fixed portion 30b. Thereafter, the cover 18 is attached to the case 17 from the side opposite to the subject.

(Main effects of this form)
As described above, in this embodiment, the wiring board 10 pulled out from the movable body 3 includes the module pullout part 31d pulled out from the camera module 2, the coil connecting part 30a to which the drive coils 25 and 27 are connected, and the holder. A movable side fixed part 30b fixed to the case 15, a fixed side fixed part 30c fixed to the case 17, and a band-shaped part 30d connecting the movable side fixed part 30b and the fixed side fixed part 30c. There is. Further, in this embodiment, the module drawer portion 31d and the coil connecting portion 30a are connected to the movable side fixed portion 30b fixed to the holder 15. Therefore, in this embodiment, what influences the initial inclination of the movable body 3 with respect to the fixed body 5 is the routing of the band-shaped portion 30d.

Therefore, in this embodiment, by adjusting the fixing position of the fixed side fixed portion 30c to the case 17, it is possible to adjust the initial inclination of the movable body 3 with respect to the fixed body 5. As a result, in this embodiment, the fixed side fixed part 30c is attached to the case 17 while adjusting only the fixing position of the fixed side fixed part 30c so that the inclination of the movable body 3 with respect to the fixed body 5 falls within a predetermined standard. It becomes possible to fix it. Therefore, in this embodiment, it becomes possible to easily perform the work of fixing the wiring board 10 pulled out from the movable body 3 to the fixed body 5.

In addition, in this embodiment, since the strip portion 30d is pulled out from the movable body 3 without overlapping with other wiring boards, two Compared to the case where the flexible printed circuit board is drawn out from the movable body 3 in duplicate, it is possible to eliminate waste of the wiring board 10 and reduce the cost of the optical unit 1.

In this embodiment, the module drawer portion 31d is connected to the movable fixed portion 30b via connectors 32 and 33. Therefore, in this embodiment, as described above, when assembling the optical unit 1, after assembling parts other than the camera module 2, the second wiring board 31, and the cover 18, the camera with the second wiring board 31 attached is assembled. It becomes possible to assemble the module 2 and connect the module drawer portion 31d to the movable fixed portion 30b. Therefore, in this embodiment, it is possible to increase the degree of freedom in the assembly process of the optical unit 1.

Note that in this embodiment, since the movable side fixed part 30b is fixed to the holder 15, when assembling the optical unit 1, after assembling parts other than the camera module 2, the second wiring board 31, and the cover 18, Even if the camera module 2 with the wiring board 31 attached is assembled and the module drawer part 31d is connected to the movable fixed part 30b, the initial inclination of the movable body 3 with respect to the fixed body 5 is due to the influence of the wiring board 10. This makes it possible to prevent fluctuations. Therefore, in this embodiment, even when the camera module 2 is not fixed to the holder 15 and the module drawer part 31d is not connected to the movable side fixed part 30b, the inclination of the movable body 3 with respect to the fixed body 5 is within the predetermined standard. It becomes possible to fix the stationary side fixed part 30c to the case 17 so that it fits within the case 17.

(Other embodiments)
Although the embodiment described above is an example of a preferred embodiment of the present invention, it is not limited thereto, and various modifications can be made without changing the gist of the present invention.

In the above-described embodiment, the movable fixed portion 30b may be formed of a flexible printed circuit board. In this case, the movable fixed portion 30b is preferably fixed to a flat reinforcing plate. In this case, the reinforcing plate is made of, for example, FR-4, glass epoxy, or the like, or a metal plate such as a stainless steel plate. Further, the reinforcing plate is formed into an annular and flat plate shape corresponding to the shape of the movable fixed portion 30b. The movable side fixed portion 30b is attached and fixed to the surface (lower surface) on the side opposite to the subject of the reinforcing plate, and the reinforcing plate is attached and fixed to the surface (lower surface) on the side opposite to the subject of the holder 15. There is.

As in the above-described embodiment, when the movable side fixed part 30b is made up of a rigid board, or when the movable side fixed part 30b made of a flexible printed circuit board is fixed to a reinforcing plate, the movable It becomes possible to stabilize the state of the movable side fixed part 30b fixed to the holder 15 compared to the case where the side fixed part 30b is constituted by a flexible printed circuit board and is not fixed to a reinforcing plate. . Therefore, it becomes possible to stabilize the state of the module drawer portion 31d and the coil connecting portion 30a that are connected to the movable side fixed portion 30b.

Further, in the above-described embodiment, the connected portion 31c of the second wiring board 31 and the fixed side fixed portion 30c of the first wiring board 30 may be formed of a flexible printed circuit board. In this case, the connected portion 31c and the fixed side fixed portion 30c may be fixed to a flat reinforcing plate.

In the embodiment described above, the wiring board 10 does not need to include the connectors 32 and 33. In this case, for example, the connected portion 31c of the second wiring board 31 is connected to the movable fixed portion 30b of the first wiring board 30 by soldering. Further, in the above-described embodiment, the first wiring board 30 and the second wiring board 31 may be integrally formed.

In the embodiment described above, the fixed body 5 may rotatably hold the movable body 3 via a leaf spring so that the optical axis L of the camera module 2 is tilted in an arbitrary direction. In this case, the leaf spring includes, for example, a movable fixed part fixed to the holder 15, a fixed fixed part fixed to the case 17, a movable fixed part, and a fixed fixed part. It has an arm part that connects to the fixed part. Moreover, in this case, the optical unit 1 does not need to be provided with the intermediate member 4, the first fulcrum part 12, and the second fulcrum part 13.

1 Optical unit (optical unit with shake correction function)
2 Camera module 3 Movable body 5 Fixed body 8, 9 Magnetic drive mechanism 10 Wiring board 15 Holder 24, 26 Drive magnet 25, 27 Drive coil 30a Coil connection portion 30b Movable side fixed portion 30c Fixed side fixed portion 30d Strip-shaped Part 31d Module drawer part 32 Connector (first connector)
33 Connector (second connector)
L optical axis

Claims (5)

a movable body having a camera module; a fixed body rotatably holding the movable body; and a structure for rotating the movable body with respect to the fixed body so that the optical axis of the camera module is tilted in an arbitrary direction. a magnetic drive mechanism, and a wiring board pulled out from the movable body,
The movable body includes a holder to which the camera module is fixed,
The magnetic drive mechanism includes a drive magnet fixed to the fixed body, and a drive coil arranged opposite to the drive magnet and fixed to the holder,
The wiring board includes a module pull-out part pulled out from the camera module, a coil connection part to which the drive coil is connected, a movable fixed part fixed to the holder, and a fixed part fixed to the fixed body. comprising a side fixed part and a band-shaped part connecting the movable side fixed part and the fixed side fixed part,
The strip portion is made of a flexible printed circuit board,
The optical unit with a shake correction function, wherein the module drawer part and the coil connecting part are connected to the movable side fixed part. 2. The optical system with a shake correction function according to claim 1, wherein the movable side fixed part is made up of a rigid board or a flexible printed board, and is fixed to a flat reinforcing plate. unit. The wiring board is characterized in that it includes a first connector mounted on the movable side fixed part, and a second connector mounted on the module drawer part and connected to the first connector. 2. The optical unit with a shake correction function described in 2. If one side in the optical axis direction, which is the direction of the optical axis of the camera module, is the subject side, and the opposite side to the subject side is the anti-subject side,
The movable fixed portion is arranged such that the thickness direction of the movable fixed portion coincides with the optical axis direction,
The first connector is mounted on the surface of the movable fixed part on the side opposite to the subject,
4. The optical unit with a shake correction function according to claim 3, wherein the second connector is mounted on the object-side surface of the module drawer. 5. The optical unit with a shake correction function according to claim 1, wherein the coil connecting portion is constituted by a flexible printed circuit board.

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