JP2021028657A - Optical unit with shake correcting function, and method of manufacturing the same - Google Patents

Abstract

To make an optical unit with a shake correcting function compact.SOLUTION: An optical unit 1 with a shake correcting function comprises a metallic case 97 in which a fixed body 23 encloses an outer peripheral side of a movable body 20. A second connection mechanism 82 which connects a gimbal frame 80 to the fixed body 23 rotatably on a second axis R2 is so constituted that a through hole 117 and a cylinder part 118 are formed integrally in a seventh side plate 107 and an eighth side plate 108 of the case 97, and a second axial-side shaft 84 is inserted into the cylinder part 118 to protrude toward an inner periphery and then contact a second axial-side concave curved surface 95 provided to the gimbal frame 80. The case 97 has a frame part 99 and a frame-shaped plate part 98 equal in plate thickness, and is formed in a three-dimensional shape by bending a case base material 200 punched out of one sheet metal member. In punching the case base material 200, a prepared hole is formed in the sheet metal member, and then the through hole 117 and cylinder part 118 are formed through burring processing.SELECTED DRAWING: Figure 12

Description

The present invention relates to an optical unit with a shake correction function that corrects runout by rotating an imaging module around an optical axis, and a method for manufacturing the same.

The optical unit mounted on the mobile terminal or mobile body swings or rotates the movable body on which the optical module is mounted in order to suppress the disturbance of the captured image when the mobile terminal or mobile body is moved. Some are equipped with a correction mechanism. Patent Document 1 discloses this kind of optical unit with a runout correction function. The optical unit with a runout correction function of Patent Document 1 includes a gimbal mechanism that swingably supports a movable body. The gimbal mechanism includes a frame-shaped gimbal frame (movable frame), a rectangular frame on the movable body side arranged on the inner peripheral side of the gimbal frame, and a rectangular frame on the fixed body side arranged on the outer peripheral side of the gimbal frame. The movable body and the gimbal mechanism are housed in a case which is a part on the fixed body side.

Japanese Unexamined Patent Publication No. 2014-6522

The applicant of the present application, in order to reduce the shape of the optical unit with a runout correction function provided with a gimbal mechanism when viewed from the optical axis direction, in Japanese Patent Application No. 2018-156088, the front side in the optical axis direction with respect to the movable body ( We are proposing a structure in which a gimbal frame is placed on the subject side) and the end of the frame is extended from the corner of the gimbal frame to the movable body side. Further, in Japanese Patent Application No. 2019-110953, a similar gimbal frame is provided, and a rotation support mechanism is arranged between the gimbal frame and the movable body in order to rotate the movable body around the optical axis to perform rolling correction. We are proposing a structure.

In the optical unit with a runout correction function of Japanese Patent Application No. 2019-110953 provided with a gimbal mechanism and a rotation support mechanism, the fixed body is provided with a resin holder that surrounds the outer peripheral side of the movable body, and is oriented in the second axial direction of the holder. A second connection mechanism for connecting the gimbal frame and the fixed body is arranged at the diagonal position. Further, the movable body includes a resin image pickup module holder that holds the image pickup module (optical module), and a rotation support mechanism is connected to the image pickup module holder. When the connection mechanism with the gimbal mechanism and the rotation support mechanism is provided in the resin holder in this way, the thickness of the holder in the radial direction must be secured. Therefore, it is difficult to miniaturize the shape of the optical unit with the runout correction function when viewed from the optical axis direction.

The second connection mechanism for connecting the gimbal frame and the fixed body is configured by assembling a metal member that makes point contact with the frame end of the gimbal frame and a resin holder. Therefore, the configuration is complicated and miniaturization is difficult.

In view of these points, an object of the present invention is to reduce the size of the optical unit with a runout correction function. Another object of the present invention is to propose a method for manufacturing an optical unit with a runout correction function.

In order to solve the above problems, the optical unit with a shake correction function of the present invention includes a movable body including a lens, a rotation support mechanism for rotatably supporting the movable body about the optical axis of the lens, and the above. A gimbal mechanism that rotatably supports the rotation support mechanism around the first axis that intersects the optical axis, and rotatably supports the optical axis and the second axis that intersects the first axis, and the gimbal mechanism. And a fixed body that supports the movable body via the rotation support mechanism, and the gimbal mechanism rotatably connects the gimbal frame, the rotation support mechanism and the gimbal frame around the first axis. A first connection mechanism for connecting the fixed body and the gimbal frame so as to be rotatably connected around the second axis. The fixed body includes the movable body, the rotation support mechanism, and the gimbal frame. A metal case surrounding the outer peripheral side of the gimbal frame is provided, the case includes a pair of side plates facing each other in the second axial direction, and the second connection mechanism penetrates each side plate in the second axial direction. A pair of second shaft side shafts that are inserted into a tubular portion that protrudes from the opening edge of the through hole in the second axis direction and protrudes inwardly on the second axis, and the second axis direction of the gimbal frame. It is characterized by including a second shaft side concave curved surface provided at a diagonal position of the above and with which the tip of the second shaft side shaft contacts.

According to the present invention, a rotary support mechanism that rotatably supports a movable body around an optical axis is rotatably supported around a first axis and a second axis by a gimbal mechanism. Therefore, even when the movable body is rotating around the first axis or the second axis, the movable body can be rotated around a rotation axis that coincides with the optical axis.

Further, in the present invention, the fixed body includes a metal case that surrounds the outer peripheral side of the movable body, and the second connecting mechanism that rotatably connects the gimbal frame to the fixed body around the second axis is provided. It is provided on a pair of side plates arranged diagonally in the second axial direction of the case. The second connection mechanism is such that the second shaft side shaft, which is inserted into the tubular portion protruding from the opening edge of the through hole penetrating the metal side plate and protrudes to the inner peripheral side, is diagonal to the second axis direction of the gimbal frame. It is configured by contacting the concave curved surface on the second axis side provided at the position. In this way, if the case surrounding the movable body is made of metal, the through hole and the tubular portion constituting the second connection mechanism can be integrally formed with the case. Therefore, the configuration of the second connection mechanism can be simplified, and the thickness of the case in the radial direction can be reduced even when the second connection mechanism is provided. Therefore, the shape of the optical unit with the runout correction function when viewed from the optical axis direction can be miniaturized.

In the present invention, the case includes a frame portion that surrounds the movable body, the rotation support mechanism, and the outer peripheral side of the gimbal frame, and a frame-shaped plate portion that extends from one end of the frame portion in the optical axis direction toward the inner peripheral side. , And the frame portion and the frame-shaped plate portion are preferably made of metal plates having the same plate thickness. As described above, if the frame portion and the frame-shaped plate portion have the same plate thickness, the case can be manufactured by bending the case base material obtained by punching one sheet metal member. Further, when the case is formed from the sheet metal member, a pilot hole can be formed in the sheet metal member before being bent into a three-dimensional shape, and then burring is performed to form a through hole and a tubular portion. Therefore, the through hole and the tubular portion constituting the second connection mechanism can be integrally formed with the case.

In the present invention, a runout correction magnetic drive mechanism for swinging the movable body around the first axis and the second axis is provided, and the runout correction magnetic drive mechanism includes a magnet arranged on the movable body. The coil is provided in a coil holding opening that penetrates the frame portion in a direction orthogonal to the optical axis, and is routed along the outer peripheral surface of the frame portion. It is preferable to be fixed to the flexible printed substrate. In this way, in the fixed body, it is possible to reduce the thickness of the portion where the coil is arranged. Further, when the case base material obtained by punching out one sheet metal member is bent to manufacture the case, the case base material can be punched out into a shape provided with an opening for holding a coil. Therefore, the case can be easily manufactured.

In the present invention, the frame portion may include a plurality of side plates including the pair of side plates, and a caulking portion may be provided at a connection position between the side plates adjacent to each other in the circumferential direction. When a three-dimensional case is manufactured from a case base material obtained by punching one sheet metal member, the side plates can be firmly fixed to each other by caulking. Therefore, the strength of the case can be increased.

In the present invention, when the fixed body is provided with a cover for accommodating the movable body and the case, the case has a positioning convex portion protruding from a corner portion connecting the frame-shaped plate portion and the frame portion. The cover may be provided with a positioning hole into which the positioning protrusion is fitted. When forming a case by bending a case base material obtained by punching one sheet metal member, the shape of the edge portion of the case base material is set so that the positioning convex portion protrudes from the corner portion of the three-dimensional case. be able to. Therefore, a positioning structure for the cover can be easily formed.

Alternatively, in the present invention, when the fixed body is provided with a cover for accommodating the movable body and the case, the case is fitted at a corner portion connecting the frame-shaped plate portion and the frame portion. The cover may be provided with a hook that fits into the fitting portion. When forming a case by bending a case base material obtained by punching one sheet metal member, a penetration portion is formed at a bending position of the case so that a fitting portion is formed at a corner portion of a three-dimensional case. Can be kept. Therefore, a fitting structure with the cover can be easily formed.

Next, the present invention is characterized in that, in the method for manufacturing an optical unit with a runout correction function, a case base material obtained by punching one sheet metal member is bent to manufacture the case having a three-dimensional shape. With such a manufacturing method, a through hole and a tubular portion can be integrally formed with respect to the sheet metal member before being bent into a three-dimensional shape. Therefore, the through hole and the tubular portion constituting the second connection mechanism can be integrally formed with the case. Further, in the manufacturing method in which the case base material is bent into a three-dimensional shape, it is possible to provide the case with positioning protrusions and fitting recesses that cannot be formed by drawing.

In the present invention, when the case base material is punched from the sheet metal member, the tubular portion can be formed by burring. In this way, the through hole and the tubular portion constituting the second connection mechanism can be integrally formed with the case.

In the present invention, the frame-shaped plate portion is octagonal, and when the frame portion includes eight side plates including the pair of side plates, the case base material constitutes the frame-shaped plate portion. It has a developed shape in which the first base material portion and the second base material portion provided with the eight side plate base material portions constituting the eight side plates are connected, and when the case base material is punched out, the said The eight side plate base material portions are punched from the eight sides forming the outer peripheral edge of the first base material portion into a developed shape extending toward the outer peripheral side in a state of being separated from each other, and the case has a three-dimensional shape from the case base material. Each of the eight side plate base material portions can be bent at a substantially right angle in the same direction with respect to the first base material portion. Further, in this case, the ends of the side plate base material portions adjacent to each other in the circumferential direction can be overlapped and caulked and fixed.

Alternatively, in the present invention, when the frame-shaped plate portion is octagonal and the frame portion includes eight side plates including the pair of side plates, the case base material is the frame-shaped plate portion. It is a developed shape in which the first base material portion constituting the above and the second base material portion provided with the eight side plate base material portions constituting the eight side plates are connected, and the case base material is punched out. When, one of the eight side plate base material portions connected in a row is connected to one of the eight sides constituting the outer peripheral edge of the first base material portion. When forming the three-dimensional case from the case base material, the second base material portion is bent at the boundary position of the adjacent side plate base material portions to form a tubular shape, and the first base plate portion is formed. The base material portion can be bent at a substantially right angle to the second base material portion. In this way, the corner portion connecting the frame-shaped plate portion and the frame portion becomes a portion in which the outer peripheral edge of the first base material portion and the outer peripheral edge of the second base material portion are abutted and connected. Therefore, by appropriately setting the shape of the edge portion of the second base material portion, it is possible to form the positioning convex portion at this position.

According to the present invention, the fixed body includes a metal case that surrounds the outer peripheral side of the movable body, and the second connecting mechanism that rotatably supports the gimbal frame and the fixed body around the second axis is a case. It is provided on a pair of side plates arranged diagonally in the second axial direction of the above. The second connection mechanism is such that the second shaft side shaft, which is inserted into the tubular portion protruding from the opening edge of the through hole penetrating the metal side plate and protrudes to the inner peripheral side, is diagonal to the second axis direction of the gimbal frame. It is configured by contacting the concave curved surface on the second axis side provided at the position. Therefore, the through hole and the tubular portion constituting the second connection mechanism can be integrally formed with the metal case. Therefore, the configuration of the second connection mechanism can be simplified, and the thickness of the case in the radial direction can be reduced even when the second connection mechanism is provided. Therefore, the shape of the optical unit with the runout correction function when viewed from the optical axis direction can be miniaturized.

It is a perspective view of the optical unit with a runout correction function. It is a perspective view of the optical unit with a runout correction function excluding the cover on the subject side. It is a perspective view of the main body of an optical unit. It is a top view when the optical unit main body part is seen from the optical axis direction. FIG. 4 is a cross-sectional view taken along the line AA of FIG. FIG. 4 is a cross-sectional view taken along the line BB of FIG. It is an exploded perspective view of the main body of an optical unit. It is explanatory drawing of a movable body, a rotation support mechanism, and a gimbal mechanism. It is an exploded perspective view when the rotation support mechanism is seen from one side in the optical axis direction. It is an exploded perspective view when the rotation support mechanism is seen from the other side in the optical axis direction. It is an exploded perspective view of the gimbal frame and the shaft on the 1st shaft side. It is an exploded perspective view of the case and the shaft on the 2nd shaft side. It is a flowchart of the manufacturing method of the optical unit with a runout correction function. It is explanatory drawing of the connection method of a gimbal frame and a fixed body. It is an exploded perspective view when the optical unit with a runout correction function is seen from one side in the optical axis direction. It is a development view of a case base material. It is a developed view of the case base material of the modification 1 and the perspective view of a case. It is a developed view of the case base material of the modification 2 and the perspective view of a case. It is a developed view of the case base material of the modification 3 and the perspective view of a case and a cover.

Hereinafter, embodiments of an optical unit with a runout correction function to which the present invention is applied will be described with reference to the drawings.

(overall structure)
FIG. 1 is a perspective view of an optical unit with a runout correction function. FIG. 2 is a perspective view of an optical unit with a shake correction function excluding the subject side cover. FIG. 3 is a perspective view of the main body of the optical unit. FIG. 4 is a plan view of the optical unit main body as viewed from the optical axis direction. In FIGS. 3 and 4, the first flexible printed circuit board, the second flexible printed circuit board, and the third flexible printed circuit board drawn out from the main body of the optical unit are omitted. FIG. 5 is a cross-sectional view taken along the line AA of FIG. FIG. 6 is a cross-sectional view taken along the line BB of FIG. FIG. 7 is an exploded perspective view of the main body of the optical unit.

As shown in FIGS. 1 and 2, the optical unit 1 with a runout correction function includes a rectangular parallelepiped cover 2 and an optical unit main body 3 housed in the cover 2. The optical unit main body 3 has an image pickup module 5 including a lens 4 and an image pickup element 9 (see FIG. 8). The first flexible printed circuit board 6 and the second flexible printed circuit board 7 are pulled out from the cover 2 in parallel. Further, the third flexible printed circuit board 8 is pulled out from the cover 2 in a direction different from the drawing direction of the first flexible printed circuit board 6 and the second flexible printed circuit board 7.

The optical unit 1 with a shake correction function is used, for example, in optical devices such as mobile phones with cameras and drive recorders, and optical devices such as action cameras and wearable cameras mounted on moving objects such as helmets, bicycles, and radiocon helicopters. .. In such an optical device, if the optical device shakes during shooting, the captured image is distorted. The optical unit 1 with a shake correction function corrects the tilt of the image pickup module 5 based on the acceleration, the angular velocity, the amount of shake, etc. detected by a detection means such as a gyroscope in order to prevent the captured image from tilting.

In the optical unit 1 with a shake correction function of this example, the optical axis L of the lens 4, the first axis R1 orthogonal to the optical axis L, and the second axis R2 orthogonal to the optical axis L and the first axis R1 The image pickup module 5 is rotated to perform runout correction.

In the following description, the three axes orthogonal to each other are defined as the X-axis direction, the Y-axis direction, and the Z-axis direction. Further, one side in the X-axis direction is the −X direction, and the other side is the + X direction. One side in the Y-axis direction is the −Y direction, and the other side is the + Y direction. One side in the Z-axis direction is the −Z direction, and the other side is the + Z direction. The X-axis direction is the longitudinal direction of the cover 2, and the Y-axis direction is the lateral direction of the cover 2. The first flexible printed circuit board 6 and the second flexible printed circuit board 7 are drawn out from the cover 2 in the + X direction. The third flexible printed substrate 8 is pulled out from the cover 2 in the −Y direction. The Z-axis direction is the optical axis direction along the optical axis L. The −Z direction is the image side of the image pickup module 5, and the + Z direction is the subject side of the image pickup module 5. The first axis R1 and the second axis R2 are inclined around the Z axis (around the optical axis L) by 45 degrees with respect to the X axis and the Y axis.

As shown in FIG. 2, the cover 2 includes a plate-shaped image-side cover 10 that covers the optical unit main body 3 from the −Z direction. Further, as shown in FIG. 1, the cover 2 includes a subject-side cover 11 that covers the image-side cover 10 from the + Z direction. The subject-side cover 11 includes a frame-shaped first cover 12 that covers the optical unit main body 3 from the outer peripheral side, and a box-shaped second cover 13 that is located in the + X direction of the first cover 12. The second cover 13 partially covers the first flexible printed circuit board 6 and the second flexible printed circuit board 7 drawn out from the optical unit main body 3 in the + X direction.

As shown in FIG. 2, the first flexible printed circuit board 6 and the second flexible printed circuit board 7 each include a bent portion 15 in a portion covered by the second cover 13. The bent portion 15 includes a first bent portion 16 that extends along the XY plane and bends in the Z-axis direction, a second bent portion 17 that bends in the X-axis direction along the YZ plane, and a Y-axis along the XZ plane. A third bent portion 18 that bends in a direction is provided. A plurality of second bent portions 17 are provided in the X-axis direction to form a zigzag fold. In the flexible printed circuit board, the end portion of the bent portion 15 in the + X direction is fixed to the end portion of the image side cover 10 in the + X direction via the reinforcing plate 19.

As shown in FIGS. 3, 4, and 7, the optical unit main body 3 includes a movable body 20 including an imaging module 5 and a rotation support mechanism 21 that rotatably supports the movable body 20 around the optical axis L. , Equipped with. Further, the optical unit main body 3 rotatably supports the rotation support mechanism 21 around the first axis R1 and rotatably around the second axis R2, and the gimbal mechanism 22 and the gimbal mechanism 22 and the rotation support. It has a fixed body 23 that supports the movable body 20 via a mechanism 21. The movable body 20 has a first axis R via a rotation support mechanism 21 and a gimbal mechanism 22.
It is supported by the fixed body 23 in a state where it can rotate once and around the second axis R2. The movable body 20 rotates around the X-axis and the Y-axis by combining the rotation around the first axis R1 and the rotation around the second axis R2. As a result, the optical unit 1 with a runout correction function performs pitching correction around the X-axis, yawing correction around the Y-axis, and rolling correction around the Z-axis.

Further, the optical unit main body 3 includes a correction magnetic drive mechanism 25 that rotates the movable body 20 around the first axis R1 and the second axis R2. The correction magnetic drive mechanism 25 includes a first runout correction magnetic drive mechanism 26 that generates a driving force around the X axis with respect to the movable body 20, and a second driving force that generates a driving force around the Y axis with respect to the movable body 20. 2 A magnetic drive mechanism 27 for runout correction is provided. The first runout correction magnetic drive mechanism 26 is arranged in the −Y direction of the image pickup module 5. The second runout correction magnetic drive mechanism 27 is arranged in the −X direction of the image pickup module 5. Further, the optical unit main body 3 has a rolling correction magnetic drive mechanism 28 that rotates the movable body 20 around the optical axis L. The rolling correction magnetic drive mechanism 28 is arranged in the + Y direction of the image pickup module 5.

The first runout correction magnetic drive mechanism 26, the first runout correction magnetic drive mechanism 27, and the rolling correction magnetic drive mechanism 28 are arranged in the circumferential direction around the optical axis L. When viewed from a direction orthogonal to the optical axis L, the rolling correction magnetic drive mechanism 28 overlaps with the correction magnetic drive mechanism 25. In this example, the rolling correction magnetic drive mechanism 28 and the first runout correction magnetic drive mechanism 26 are arranged at positions facing each other with the optical axis L in between.

Here, as shown in FIG. 2, the third flexible printed circuit board 8 is routed along the outer peripheral surface of the optical unit main body 3. Further, the third flexible printed circuit board 8 is pulled out from the outer peripheral surface of the optical unit main body 3 in the −Y direction.

(Movable body)
FIG. 8 is an explanatory view of the movable body 20, the rotation support mechanism 21, and the gimbal mechanism 22. As shown in FIG. 8, the movable body 20 includes an image pickup module 5 and a frame-shaped holder 29 that surrounds the image pickup module 5 from the outer peripheral side. The image pickup module 5 includes an image pickup module main body 30 and a cylindrical portion 31 projecting from the center of the image pickup module main body 30 in the + Z direction. The lens 4 is housed in the cylindrical portion 31. The cylindrical portion 31 is coaxial with the optical axis L and extends in the optical axis L direction with a constant outer diameter dimension. The image pickup device 9 is housed in the image pickup module main body 30. The image sensor 9 is located on the optical axis L of the lens 4 in the −Z direction of the lens 4. Here, the holder 29 and the image pickup module main body 30 located inside the holder 29 and the holder 29 in the image pickup module 5 form a movable body main body 32. The cylindrical portion 31 of the image pickup module 5 constitutes a movable body protruding portion 33 that protrudes in the + Z direction from the center of the movable body main body portion 32.

As shown in FIG. 8, the shape of the movable body main body 32 when viewed from above is substantially octagonal. The movable body main body 32 includes a first side wall 35 and a second side wall 36 extending parallel to the Y direction, and a third side wall 37 and a fourth side wall 38 extending parallel to the X direction. The first side wall 35 is located in the −X direction of the second side wall 36. The third side wall 37 is located in the −Y direction of the fourth side wall 38. Further, the movable body main body 32 has a fifth side wall 39 and a sixth side wall 40 located diagonally in the first axis R1 direction, and a seventh side wall 41 and an eighth side wall located diagonally in the second axis R2 direction. 42 is provided. The fifth side wall 39 is located in the −X direction of the sixth side wall 40. The seventh side wall 41 is located in the −Y direction of the eighth side wall 42.

A first magnet 45 (magnet for runout correction) is fixed to the first side wall 35 of the movable body 20 via a plate-shaped first yoke 44 made of a magnetic material. The first magnet 45 is divided into two in the Z-axis direction. A second magnet 47 (magnet for runout correction) is fixed to the third side wall 37 of the movable body 20 via a plate-shaped second yoke 46 made of a magnetic material. The first magnet 45 and the second magnet 47 are arranged so that the same poles are directed in the Z-axis direction. The second magnet 47 is divided into two in the Z-axis direction. A third magnet 49 (rolling correction magnet) is fixed to the fourth side wall 38 of the movable body 20 via a plate-shaped third yoke 48 made of a magnetic material. The third magnet 49 is divided into two in the circumferential direction.

Here, the first magnet 45 and the second magnet 47 are runout correction magnets of the runout correction magnetic drive mechanism 25 that rotates the movable body 20 around the first axis R1 and the second axis R2. The runout correction magnetic drive mechanism 25 includes, as runout correction magnets, a first magnet 45 and a second magnet 47 arranged in the circumferential direction with the first axis R1 in between. Further, the third magnet 49 is a rolling correction magnet of the rolling correction magnetic drive mechanism 28 that rotates the movable body around the optical axis L. The third magnet 49 is arranged on the opposite side of the optical axis L from the second magnet 47.

(Rotation support mechanism)
FIG. 9 is an exploded perspective view of the rotation support mechanism 21 when viewed from the + Z direction. FIG. 10 is an exploded perspective view of the rotation support mechanism 21 when viewed from the −Z direction. As shown in FIGS. 9 and 10, the rotation support mechanism 21 includes a plate roll 51 fixed to the movable body 20, a plate holder 52 having an opposing portion 56 facing the plate roll 51 in the Z-axis direction, and a plate roll. A rotation mechanism 53 that allows the 51 and the plate holder 52 to rotate around the optical axis L is provided. Further, the rotation support mechanism 21 includes a first pressurization mechanism 54 and a second pressurization mechanism 55 that urge the plate roll 51 in a direction approaching the plate holder 52.

The plate roll 51 is made of metal and is made of a non-magnetic material. The plate roll 51 includes a plate roll annular portion 57 that surrounds the optical axis L, and a pair of plate roll extending portions 58 that project from the plate roll annular portion 57 on both sides in the second axis R2 direction and extend in the −Z direction. .. The plate roll annular portion 57 includes a plate roll annular plate 59 and a plate roll annular wall 60 (inner side wall) that bends and extends in the + Z direction from the inner peripheral side edge of the plate roll annular plate 59. The plate roll annular wall 60 has a cylindrical shape. As shown in FIG. 9, a plate roll annular groove 61 is provided at the center in the radial direction on the end face of the plate roll annular plate 59 in the + Z direction. Further, the pressurizing magnets 62 are fixed to the plate roll annular plate 59 at three places in the circumferential direction at equal angular intervals.

Each of the pair of plate roll extending portions 58 includes a fixing portion 63 fixed to the movable body 20 at an end portion in the −Z direction. The fixing portion 63 includes a plurality of wedge-shaped protrusions 63a whose width in the circumferential direction widens toward the + Z direction at both end edges in the circumferential direction. Further, the fixing portion 63 includes a rectangular protrusion 63b on the outer surface in the second axis R2 direction. The amount of protrusion of the rectangular protrusion 63b in the second axis R2 direction increases in the + Z direction.

The plate holder 52 is made of a magnetic material. The plate holder 52 includes a plate holder annular portion 65 and a pair of plate holder extension portions 66 projecting from the plate holder annular portion 65 toward both sides in the first axis R1 direction and extending in the −Z direction. The plate holder annular portion 65 is an opposing portion 56 of the plate holder 52 that faces the plate roll annular portion 57 in the Z-axis direction.

The plate holder annular portion 65 includes a plate holder annular plate 67 located in the + Z direction of the plate roll annular portion 57 and a plurality of plate holder arc walls 68 bending in the −Z direction from the outer peripheral side edge of the plate holder annular plate 67 ( (Outer side wall) and. As shown in FIG. 10, a plurality of plate holder arc grooves 70 extending in the circumferential direction are provided on the end surface of the plate holder annular plate 67 in the −Z direction. In this example, six plate holder arc grooves 70 are provided at equal angular intervals. Each of the plate holder arc grooves 70 faces the plate roll annular groove 61 in the Z-axis direction.

The pair of plate holder extension portions 66 are the plate holder first extension portion 66a extending from the plate holder annular portion 65 on both sides in the direction of the first axis R1, and the outer peripheral end of the plate holder first extension portion 66a, respectively. The outer circumference of the movable body 20 from the end of the plate holder second extending portion 66b and the plate holder second extending portion 66b in the −Z direction, which are inclined in the −Z direction toward the direction away from the plate holder annular portion 65. A plate holder third extension portion 66c extending on the side in the −Z direction is provided. As shown in FIG. 5, the plate holder first extending portion 66a projects in the first axis R1 direction from the ends of the plate holder arc wall 68 located on both sides in the first axis R1 direction in the −Z direction. The plate holder third extension portion 66c of one plate holder extension portion 66 faces the fifth side wall 39 of the movable body 20 with a slight gap in the direction of the first axis R1. The plate holder third extension portion 66c of the other plate holder extension portion 66 faces the sixth side wall 40 of the movable body 20 with a slight gap in the direction of the first axis R1. Further, each plate holder third extending portion 66c includes a first axis side concave curved surface 69 that is recessed in the radial direction (side of the movable body 20) on the first axis R1 line.

As shown in FIGS. 9 and 10, the rotation mechanism 53 includes a plurality of spheres 71 and a retainer 72. The sphere 71 is made of metal. The retainer 72 is made of resin. The retainer 72 includes a plurality of sphere holding holes 72a that rotatably hold each of the plurality of spheres 71. In this example, the rotation mechanism 53 includes six spheres 71. Therefore, the retainer 72 includes six sphere holding holes 72a. The sphere 71 is held in the sphere holding hole 72a and projects from the retainer 72 in the −Z direction and the + Z direction. In this example, each sphere holding hole 72a is an elongated hole whose circumferential direction is longer than the radial direction. When the sphere 71 is located at the center of the sphere holding hole 72a, between the outer retainer portion 72b located on the outer peripheral side of the sphere holding hole 72a in the retainer 72 and the sphere 71, and in the relayer, the inner circumference of the sphere holding hole 72a. A gap is provided between the inner retainer portion 72c located on the side and the sphere 71.

The retainer 72 is formed from an outer protruding portion 73 protruding outward from the outer retainer portion 72b located on the radial outer side of each sphere holding hole 72a and an inner retainer portion 72c located on the radial inner side of each sphere holding hole 72a. It includes an inner protruding portion 74 projecting to the peripheral side. Further, the retainer 72 is provided with retainer through holes 75 penetrating in the Z-axis direction at three locations in the circumferential direction.

Here, as shown in FIG. 8, the plate roll 51 and the plate holder 52 are overlapped in the Z-axis direction by inserting the plate roll annular wall 60 inside the plate holder annular portion 65 from the −Z direction. The end portion of the plate roll annular wall 60 in the + Z direction protrudes from the plate holder annular portion 65 in the + Z direction. When the plate roll 51 and the plate holder 52 are stacked, each sphere 71 and the retainer 72 are arranged between the plate holder annular portion 65 and the plate roll annular portion 57.

When the retainer 72 is arranged between the plate holder annular portion 65 and the plate roll annular portion 57, the plate holder arc wall 68 comes into contact with the outer protruding portion 73 from the outside in the radial direction, as shown in FIG. Further, the plate roll annular wall 60 comes into contact with the inner protrusion 74 from the inside in the radial direction. As a result, the retainer 72 is positioned in the radial direction between the plate holder annular portion 65 and the plate roll annular portion 57. Further, in each sphere 71 housed in each sphere holding hole 72a of the retainer 72, the end portion in the −Z direction is inserted into the plate roll annular groove 61, and the end portion in the + Z direction is inserted into the plate holder arc groove 70. .. Further, in a state where the retainer 72 is arranged between the plate holder annular portion 65 and the plate roll annular portion 57, the pressurizing magnet 62 is inserted into the retainer through hole 75.

As shown in FIGS. 5 and 8, an annular plate member 77 is fixed to the + Z direction end of the plate roll annular wall 60. When viewed from the optical axis L direction, the outer peripheral side portion of the plate member 77 and the inner peripheral end portion of the plate holder annular portion 65 overlap. A slight gap is formed in the Z-axis direction between the plate member 77 and the plate holder annular portion 65. Here, the pressurizing magnet 62 fixed to the plate roll annular portion 57 and inserted into the retainer through hole 75 attracts the plate holder 52 made of a magnetic material in a direction approaching the plate holder 52. That is, the pressurization magnet 62 constitutes a first pressurization mechanism 54 that urges the plate roll 51 in a direction approaching the plate holder 52.

Here, as shown in FIGS. 6 and 8, the movable body 20 receives the fixing portions 63 of the pair of plate roll extending portions 58 at both end portions of the movable body main body portion 32 in the second axis R2 direction. A plate roll fixing hole 79 is provided. The plate roll fixing hole 79 is provided in the holder 29. The plate roll fixing hole 79 extends in the −Z direction in parallel with the seventh side wall 41 and the eighth side wall 42.

The rotation support mechanism 21 is fixed to the movable body 20 by pressing the fixing portion 63 of each plate roll extending portion 58 of the plate roll 51 into each plate roll fixing hole 79. When the fixing portion 63 is inserted into the plate roll fixing hole 79, the movable body protruding portion 33 is inserted into the plate roll annular wall 60. As a result, the movable body protruding portion 33 (cylindrical portion 31) is fitted into the plate roll annular wall 60, so that the plate roll 51 has the movable body 20 in a state where the plate roll annular wall 60 is positioned coaxially with the optical axis L. Is fixed to. Further, when the fixing portion 63 of each plate roll extending portion 58 is press-fitted into each plate roll fixing hole 79, the protrusion 63a and the protrusion 63b of the fixing portion 63 are plastically deformed and crushed. As a result, the plate roll 51 and the movable body 20 are fixed. When the plate roll 51 and the movable body 20 are fixed, the movable body 20 can rotate around the optical axis L integrally with the plate roll 51.

Here, when the plate roll 51 of the rotation support mechanism 21 and the movable body 20 are fixed, the plate holder 52 made of a magnetic material has a first magnet 45, a second magnet 47, and a third magnet with respect to the plate roll 51. It is located on the opposite side of the magnet. In other words, the plate holder annular portion 65 is located on the side opposite to the first magnet 45, the second magnet 47, and the third magnet 49 in the Z-axis direction with the plate roll annular portion 57 in between. As a result, the first magnet 45, the second magnet 47, and the third magnet 49 attract the plate holder annular portion 65 in the direction approaching the plate roll annular portion 57. Therefore, the first magnet 45, the second magnet 47, and the third magnet 49 form a second pressurization mechanism 55 that urges the plate roll 51 in a direction approaching the plate holder 52. In this example, the movable body 20 and the plate roll 51 are attracted by the first magnet 45, the second magnet 47, and the third magnet 49 to attract the plate holder annular portion 65 in the direction approaching the plate roll annular portion 57. Is sucked in the + Z direction toward the side of the plate holder annular portion 65.

(Gimbal mechanism)
FIG. 11 is an exploded perspective view of the gimbal frame and the shaft on the first shaft side. As shown in FIG. 4, the gimbal mechanism 22 includes a gimbal frame 80 and a first connection mechanism 81 that rotatably connects the gimbal frame 80 and the plate holder 52 around the first axis R1. Further, the gimbal mechanism 22 includes a second connection mechanism 82 that rotatably connects the gimbal frame 80 and the fixed body 23 around the second axis R2. As shown in FIGS. 5 and 7, the first connection mechanism 81 is provided on the first shaft side shaft 83 and the plate holder 52, which project from the gimbal frame 80 on the first shaft R1 toward the plate holder 52. A first shaft side concave curved surface 69 with which the tip of the first shaft side shaft 83 rotatably contacts is provided. As shown in FIGS. 6 and 7, the second connection mechanism 82 is provided on the gimbal frame 80 and the second shaft side shaft 84 that projects from the fixed body 23 on the second shaft R2 toward the gimbal frame 80. A second shaft side concave curved surface 95 with which the tip of the second shaft side shaft 84 comes into contact is provided.

(Gimbal frame)
The gimbal frame 80 is made of a metal leaf spring. As shown in FIG. 8, the gimbal frame 80 protrudes from the gimbal frame main body 85 located in the + Z direction of the plate holder 52 and the gimbal frame main body 85 toward both sides in the first axis R1 direction in the −Z direction. A pair of gimbal frame extension parts 86 on the first axis side extending in A unit 87 is provided. The gimbal frame main body 85 has a substantially rectangular central plate portion 85a extending in the first axis R1 direction and one side (-Y direction side) of the central plate portion 85a in the second axis R2 direction toward the outer peripheral side. A first inclined plate portion 85b inclined in the + Z direction and a second inclined plate portion 85c inclined in the + Z direction from the other side (+ Y direction side) of the central plate portion 85a in the second axis R2 direction toward the outer peripheral side. , Equipped with. Further, the gimbal frame main body 85 is provided with an opening 90 penetrating in the Z-axis direction at the center. A movable body protruding portion 33 is inserted into the opening 90.

As shown in FIGS. 5, 7, and 8, the pair of gimbal frame extension portions 86 on the first axis side are located on the outer peripheral side of the plate holder 52. As shown in FIG. 8, each of the pair of first axis side gimbal frame extension portions 86 extends in a direction in which the first axis R1 direction is separated from the gimbal frame main body portion 85. 1 The first axis R1 direction is inclined in the −Z direction from the tip of the first extension portion 86a and the first extension portion 86a of the gimbal frame extension portion on the first axis side in the direction away from the gimbal frame main body portion 85. 1-axis side gimbal frame extension part 2nd extension part 86b (inclined extension part) and 1st axis side gimbal frame extension part 2nd extension part 86b from the end in the -Z direction to the outer peripheral side of the plate holder 52 The gimbal frame extension portion on the first axis side extending in the −Z direction is provided with a third extension portion 86c (extension portion for connection).

As shown in FIGS. 5 and 8, the first extension portion 86a of the first axis side gimbal frame extension portion protrudes from the central plate portion 85a in the direction of the first axis R1. The third extension portion 86c of the gimbal frame extension portion on the first axis side includes a gimbal frame extension portion through hole 92 penetrating in the direction of the first axis R1. Further, the first shaft side gimbal frame extension portion third extension portion 86c is a cylinder for supporting the first shaft side shaft that projects from the opening edge of the gimbal frame extension portion through hole 92 toward the outer periphery in the first axis R1 direction. A unit 93 is provided. Further, the third extension portion 86c of the gimbal frame extension portion on the first axis side includes a pair of gimbal frame extension portion protrusions 94 protruding inward from both end edges in the circumferential direction. The pair of gimbal frame extension portion protrusions 94 are provided in the first axis side gimbal frame extension portion third extension portion 86c on the + Z direction side of the gimbal frame extension portion through hole 92. Further, on the outer surface of the first axis side gimbal frame extension portion 86 opposite to the plate holder extension portion 66, the first axis side gimbal from the first axis side gimbal frame extension portion second extension portion 86b A rib 91 leading to the third extension portion 86c of the frame extension portion is provided. The rib 91 extends via a bent portion between the second extension portion 86b of the first shaft side gimbal frame extension portion and the third extension portion 86c of the first shaft side gimbal frame extension portion.

Here, the first shaft side shaft 83 has a cylindrical shape, and is inserted into the gimbal frame extension portion through hole 92 and the first shaft side shaft support cylinder portion 93 and held by the gimbal frame 80. As a result, the first shaft side shaft 83 extends on the first shaft R1 in the direction of the first shaft R1. The end portion on the inner peripheral side of the shaft 83 on the first shaft side projects from the third extension portion 86c of the gimbal frame extension portion on the first shaft side toward the plate holder extension portion 66. The end on the inner peripheral side of the shaft 83 on the first shaft side includes a hemispherical surface.

Next, as shown in FIG. 8, each of the pair of second axis side gimbal frame extension portions 87 extends the second axis side gimbal frame extension portion in a direction in which the second axis R2 direction is separated from the gimbal frame main body portion 85. From the tips of the first extension portion 87a of the installation portion and the first extension portion 87a of the gimbal frame extension portion on the second axis side, the first axis R1 direction is separated from the gimbal frame main body portion 85 in the −Z direction. The outer peripheral side of the movable body 20 is −Z from the end in the −Z direction of the inclined second axis side gimbal frame extension portion second extension portion 87b and the second axis side gimbal frame extension portion second extension portion 87b. A second axis side gimbal frame extension portion extending in the direction and a third extension portion 87c are provided. The first extension portion 87a of the second axis side gimbal frame extension portion 87 of the one second axis side gimbal frame extension portion 87 located in the −Y direction is the first from the outer peripheral edge of the first inclined plate portion 85b. It projects in the 2-axis R2 direction. The first extension portion 87a of the second axis side gimbal frame extension portion 87 of the one second axis side gimbal frame extension portion 87 located in the + Y direction is second from the outer peripheral edge of the second inclined plate portion 85c. It projects in the axis R2 direction. Each second axis side gimbal frame extension portion third extension portion 87c includes a second axis side concave curved surface 95 that is recessed on the second axis R2 toward the inner circumference side.

(1st connection mechanism)
As shown in FIG. 7, the pair of plate holder extension portions 66 are located between the pair of first axis side gimbal frame extension portions 86 and the movable body 20. The third extension portion 86c of the first axis side gimbal frame extension portion holding the first shaft side shaft 83 and the plate holder third extension portion 66c provided with the first shaft side concave curved surface 69 are first. Opposing on axis R1. The first connection mechanism 81 is configured such that the tip of the first shaft side shaft 83 protruding inward from the first shaft side gimbal frame extending portion 86 comes into contact with the first shaft side concave curved surface 69. In this example, the shaft 83 on the first shaft side and the concave curved surface 69 on the first shaft side are in point contact with each other. As a result, the rotation support mechanism 21 is supported by the gimbal frame 80 in a state of being rotatable around the first axis R1 via the first connection mechanism 81. Therefore, the movable body 20 supported by the rotation support mechanism 21 is rotatably supported around the first axis R1 by the gimbal mechanism 22. In a state where the first shaft side shaft 83 is in contact with the first shaft side concave curved surface 69, each plate holder extension portion 66 is a pair of gimbal frame extension portions provided on each first shaft side gimbal frame extension portion 86. It is located inside the protruding portion 94.

When the movable body 20 and the rotation support mechanism 21 are supported by the gimbal mechanism 22, the gimbal frame main body 85, the plate roll annular portion 57, and the plate holder annular portion 65 are movable in the + Z direction of the movable body main body 32. It is located on the outer peripheral side of the body protruding portion 33. The plate roll annular portion 57 is located between the gimbal frame main body portion 85 and the movable body main body portion 32 in the Z-axis direction. Further, the plate holder annular portion 65 is located between the gimbal frame main body 85 and the movable body main body 32 in the Z-axis direction in the + Z direction of the plate roll annular portion 57. Here, the plate roll annular portion 57 and the plate holder annular portion 65 are located in the + Z direction with respect to the first axis R1 and the second axis R2. Further, the gimbal frame main body 85, the plate roll annular portion 57, and the plate holder annular portion 65 are located in the + Z direction with respect to the image sensor 9.

(Fixed body)
FIG. 12 is an exploded perspective view of the case and the shaft on the second shaft side. As shown in FIG. 7, the fixed body 23 has a frame-shaped case 97 (frame body) that surrounds the movable body 20 and the rotation support mechanism 21 from the outer peripheral side. The case 97 is made of metal and is made of a non-magnetic material. The shape of the case 97 when viewed from the Z-axis direction is an octagon. As shown in FIG. 12, the case 97 includes an octagonal frame-shaped plate portion 98 and a frame portion 99 located on the radial outer side of the movable body main body portion 32. The frame portion 99 bends from the outer peripheral edge of the frame-shaped plate portion 98 and extends in the −Z direction.

The thickness of the frame-shaped plate portion 98 in the Z-axis direction is constant. The thickness of the frame portion 99 in the direction orthogonal to the optical axis L is constant. The thickness of the frame-shaped plate portion 98 and the frame portion 99 is the same. That is, case 9
No. 7 is formed by punching a single sheet metal in a developed shape obtained by developing the case 97 on a flat surface to form a case base material, and then bending the case base material to form a three-dimensional shape and welding necessary portions. ing. A rectangular opening 98a is provided at the center of the frame-shaped plate portion 98. When viewed from the Z-axis direction, the holder 29 of the movable body 20 is located on the inner peripheral side of the opening 98a.

The frame portion 99 includes a first side plate 101 and a second side plate 102 extending parallel to the Y direction, and a third side plate 103 and a fourth side plate 104 extending parallel to the X direction. The first side plate 101 is located in the −X direction of the second side plate 102. The third side plate 103 is located in the −Y direction of the fourth side plate 104. Further, the frame portion 99 connects the fifth side plate 105 that connects the first side plate 101 and the third side plate 103, and the second side plate 102 and the fourth side plate 104 diagonally in the direction of the first axis R1. A sixth side plate 106 is provided. The fifth side plate 105 and the sixth side plate 106 extend in parallel. Further, the frame portion 99 connects the seventh side plate 107 that connects the first side plate 101 and the fourth side plate 104, and the second side plate 102 and the third side plate 103 diagonally in the second axis R2 direction. The eighth side plate 108 is provided. The seventh side plate 107 and the eighth side plate 108 extend in parallel.

As shown in FIGS. 7 and 12, the frame portion 99 includes a first coil holding opening 109 in the first side plate 101. The first coil 110 (coil for runout correction) is inserted into the opening 109 for holding the first coil. The first coil 110 has an elliptical shape that is long in the circumferential direction, and the central hole is directed in the radial direction. Further, the frame portion 99 includes a second coil holding opening 111 in the third side plate 103. A second coil 112 (coil for runout correction) is inserted into the opening 111 for holding the second coil. The second coil 112 has an elliptical shape that is long in the circumferential direction, and the central hole is directed in the radial direction. Further, the frame portion 99 includes a third coil holding opening 113 in the fourth side plate 104. A third coil 114 (rolling correction coil) is inserted into the opening 113 for holding the third coil. The third coil 114 has an elliptical shape long in the Z-axis direction, and the central hole is directed in the radial direction. Here, as shown in FIG. 2, the third flexible printed circuit board 8 is routed along the outer peripheral surfaces of the fourth side plate 104, the first side plate 101, and the third side plate 103. The first coil 110, the second coil 112, and the third coil 114 are electrically connected to the third flexible printed circuit board 8.

Further, the second side plate 102 is provided with a rectangular notch portion 115 extending in the + Z direction from the end in the −Z direction. The first flexible printed circuit board 6 and the second flexible printed circuit board 7 connected to the image pickup module 5 are drawn out from the optical unit main body 3 in the + X direction via the notch 115.

As shown in FIG. 12, the seventh side plate 107 and the eighth side plate 108 of the case 97 are each provided with through holes 117 penetrating in the direction of the second axis R2. Further, the 7th side plate 107 and the 8th side plate 108 project in the second axis R2 direction at the opening edge of the through hole 117 on the inner side surface (the surface on the side where the second axis side gimbal frame extending portion 87 is located). A cylinder portion 118 is provided. The second shaft side shaft 84 penetrates through the through holes 117 of the seventh side plate 107 and the eighth side plate 108. The second shaft side shaft 84 has a cylindrical shape, is inserted into the through hole 117, and is supported by the tubular portion 118.

The second shaft side shaft 84 is made of metal and is fixed to each of the seventh side plate 107 and the eighth side plate 108 by welding. Therefore, a welding mark 120 for fixing the second shaft side shaft 84 to the seventh side plate 107 is provided at the contact portion between the second shaft side shaft 84 and the seventh side plate 107, and the second shaft side shaft 84 and the second shaft side shaft 84 A welding mark 120 for fixing the second shaft side shaft 84 and the eighth side plate 108 is provided at the contact portion of the eighth side plate 108. As shown in FIGS. 6 and 7, each welding mark 120 is formed at the opening edge of the through hole 117 on the outer surface of the 7th side plate 107 and the opening edge of the through hole 117 on the outer surface of the 8th side plate 108. .. 7th side plate 107
The second shaft side shaft 84 fixed to each of the eighth side plate 108 extends on the second shaft R2 in the second shaft R2 direction. The end portion on the inner peripheral side of the second shaft side shaft 84 projects from the frame portion 99 toward the inner peripheral side. The end on the inner peripheral side of the shaft 83 on the first shaft side includes a hemispherical surface.

(Second connection mechanism)
As shown in FIG. 6, in the second connection mechanism 82, the movable body 20, the rotation support mechanism 21 and the gimbal frame 80 are arranged inside the case 97, and the tip portion of the second shaft side shaft 84 is the second shaft side gimbal. The frame extension portion is formed by inserting and contacting the third extension portion 87c with the concave curved surface 95 on the second axis side. By connecting the fixed body 23 and the gimbal frame 80 by the second connecting mechanism 82, the gimbal frame 80, the rotation support mechanism 21 and the movable body 20 can rotate around the second axis R2, and the fixed body 23 Supported by.

Here, since the gimbal frame 80 is a leaf spring, the second axis side gimbal frame extension portion 87 can be elastically deformed in the second axis R2 direction. Therefore, when the second shaft side shaft 84 and the second shaft side concave curved surface 95 of the second shaft side gimbal frame extension portion 87 are brought into contact with each other, the second shaft side gimbal frame extension portion 87 is bent toward the inner peripheral side. In the state of As a result, the second shaft side gimbal frame extending portion 87 is elastically contacted with the second shaft side shaft 84 from the inner peripheral side by the elastic return force toward the outer peripheral side. Therefore, it is possible to prevent or suppress the disconnection between the second shaft side gimbal frame extending portion 87 and the frame portion 99.

(Magnetic drive mechanism for runout correction and magnetic drive mechanism for rolling correction)
When the movable body 20 supported by the gimbal mechanism 22 is arranged on the inner peripheral side of the case 97, a gap is opened between the first side wall 35 of the holder 29 and the first side plate 101 of the frame portion 99 in the X-axis direction. opposite. The second side wall 36 of the holder 29 and the second side plate 102 face each other with a gap in the X-axis direction. The third side wall 37 of the holder 29 and the third side plate 103 face each other with a gap in the Y-axis direction. The fourth side wall 38 and the fourth side plate 104 of the holder 29 face each other with a gap in the Y-axis direction, and the fifth side wall 39 and the fifth side plate 105 of the holder 29 have a gap in the first axis R1 direction. To face each other. The sixth side wall 40 of the holder 29 and the sixth side plate 106 face each other with a gap in the direction of the first axis R1. The seventh side wall 41 of the holder 29 and the seventh side plate 107 face each other with a gap in the direction of the second axis R2. The eighth side wall 42 of the holder 29 and the eighth side plate 108 face each other with a gap in the direction of the second axis R2.

As a result, as shown in FIG. 3, the first magnet 45 fixed to the first side wall 35 of the movable body 20 and the first coil 110 held by the case 97 face each other with a gap in the X direction. The first magnet 45 and the first coil 110 form a magnetic drive mechanism 27 for second runout correction. Therefore, the movable body 20 rotates about the Y axis by supplying power to the first coil 110. Further, the second magnet 47 fixed to the third side wall 37 of the movable body 20 and the second coil 112 face each other with a gap in the Y direction. The second magnet 47 and the second coil 112 form a magnetic drive mechanism 26 for first runout correction. Therefore, the movable body 20 rotates about the X-axis by supplying power to the second coil 112. The runout correction magnetic drive mechanism 25 includes rotation of the movable body 20 around the Y axis by the first runout correction magnetic drive mechanism 26 and rotation of the movable body 20 around the X axis by the first runout correction magnetic drive mechanism 27. , And rotate the movable body 20 around the first axis R1 and around the second axis R2.

Further, in the state where the movable body 20 is arranged on the inner peripheral side of the case 97, the third magnet 49 fixed to the fourth side wall 38 of the movable body 20 and the third coil 114 face each other with a gap in the Y direction. To do. The third magnet 49 and the third coil 114 constitute a rolling correction magnetic drive mechanism 28. Therefore, the movable body 20 rotates around the optical axis L by supplying power to the third coil 114.

As shown in FIGS. 3 and 4, the first magnetic plate 123 is arranged on the side of the first coil 110 opposite to the movable body 20. That is, the first magnetic plate 123 is arranged on the side opposite to the movable body 20 with respect to the first coil 110 in the radial direction of the optical axis L. The first magnetic plate 123 is a rectangle long in the Z-axis direction, and is arranged at a position overlapping the center of the first coil 110 in the Z-axis direction when viewed from the radial direction. The first magnetic plate 123 faces the first magnet 45 of the movable body 20 via the first coil 110, and provides a magnetic spring for returning the movable body 20 to a reference rotation position in the rotation direction around the Y axis. Configure. Further, as shown in FIGS. 3 and 7, a second magnetic plate 125 is arranged on the side of the third coil 114 opposite to the movable body 20. That is, the second magnetic plate 125 is arranged on the side opposite to the movable body 20 with respect to the third coil 114 in the radial direction of the optical axis L. The second magnetic plate 125 has a long shape in the circumferential direction. The second magnetic plate 125 faces the third magnet 49 of the movable body 20 via the third coil 114, and is magnetic for returning the movable body 20 to the reference rotation position in the rotation direction around the optical axis L. Make up a spring.

(Manufacturing method of optical unit with runout correction function)
Here, a method of manufacturing an optical unit with a runout correction function will be described. FIG. 13 is a flowchart of a method of manufacturing an optical unit with a runout correction function. FIG. 14 is an explanatory diagram of a connection method for connecting the fixed body 23 (case 97) and the gimbal frame 80.

In order to form the second connection mechanism 82, through holes 117 are formed in advance in the seventh side plate 107 and the eighth side plate 108 of the case 97. In this example, a through hole 117 is formed when a single sheet metal is punched out in a developed shape in which the case 97 is developed on a flat surface to form a case base material. Further, when the through hole 117 is formed, the tubular portion 118 is formed at the opening edge of the through hole 117 by burring. That is, in the formation of the through hole 117, first, a pilot hole of the through hole 117 is formed in the case base material, and then the through hole 117 and the tubular portion 118 are formed by burring (step ST1). After that, the case base material is bent and welded to form a frame-shaped case 97.

Next, the second shaft side shaft 84 is passed through the through holes 117 provided in the seventh side plate 107 and the eighth side plate 108 of the case 97, respectively. In parallel with this, the movable body 20 is supported by the rotation support mechanism 21. Further, the rotation support mechanism 21 and the gimbal frame 80 are connected by the first connection mechanism 81 (step ST2).

After that, the gimbal frame 80 in a state where the movable body 20 is supported via the rotation support mechanism 21 is arranged inside the case 97. As a result, each of the second axis side gimbal frame extension portions 87c of the pair of second axis side gimbal frame extension portions 87 of the gimbal frame 80 has the seventh side wall 41 and the seventh side plate 107 of the holder 29. And between the eighth side wall 42 and the eighth side plate 108 of the holder 29, respectively. Further, the second shaft side shaft 84 held by the seventh side plate 107 and the second shaft side concave curved surface 95 of the second shaft side gimbal frame extension portion third extension portion 87c face each other in the second axis R2 direction. To do. Similarly, the second shaft side shaft 84 held by the eighth side plate 108 and the second shaft side concave curved surface 95 of the second shaft side gimbal frame extension portion third extension portion 87c are in the second axis R2 direction. opposite. Therefore, each second shaft side shaft 84 is moved along the through hole 117 and the tubular portion 118 to the side of the second shaft side gimbal frame extension portion third extension portion 87c, and each second shaft side shaft 84 is moved. The tip portion of the above is inserted into the concave curved surface 95 on the second axis side and brought into contact with each other (step ST3).

Next, while measuring the load received by each second shaft side shaft 84 from the gimbal frame 80, the pair of second shaft side shafts 84 are moved on the second shaft R2 in a direction approaching each other (step ST4). Specifically, a pressure sensor 130 for measuring the pressure received by the second shaft side shaft 84 from the gimbal frame 80 side is attached to each second shaft side shaft 84 in advance.
Alternatively, a pressure sensor 130 that measures the pressure that the second shaft side shaft 84 receives from the gimbal frame 80 side in the second shaft R2 direction is used as a jig for moving the second shaft side shaft 84 in the direction of approaching each other. Install it. Then, while monitoring the output from the pressure sensor 130, the pair of second shaft side shafts 84 are moved in the directions approaching each other at the same time.

Then, when the output from the pressure sensor 130 reaches a predetermined value (load) (step ST5: Yes), the 7th side plate 107 and the 2nd shaft side shaft 84, and the 8th side plate 108 and the 2nd shaft side shaft Weld with 84 (step ST6). Welding of the 7th side plate 107 and the 2nd shaft side shaft 84 and welding of the 8th side plate 108 and the 2nd shaft side shaft 84 can be performed from the outer peripheral side of the case 97.

When each of the second shaft side shafts 84 is fixed to the case 97 by welding, the second connection mechanism 82 is configured. As a result, the rotation support mechanism 21 that supports the movable body 20 is supported by the fixed body 23 in a state of being rotatable around the second axis R2 via the gimbal mechanism 22. Here, in a state where each of the second shaft side shafts 84 is fixed to the case 97, the pair of second shaft side gimbal frame extending portions 87 bends toward the inner peripheral side. Therefore, the second shaft side gimbal frame extension portion 87 elastically contacts the second shaft side shaft 84 from the inner peripheral side due to the elastic return force toward the outer peripheral side.

(Cover structure)
FIG. 15 is an exploded perspective view of the optical unit 1 with a shake correction function when viewed from one side (subject side) in the L direction of the optical axis. As shown in FIG. 15, the movable body 20, the rotation support mechanism 21, and the case 97 surrounding the outer peripheral side of the gimbal frame 80 are pulled out from the movable body 20 in the + X direction in the first direction (in this example, the + X direction). The first flexible printed circuit board 6 and the second flexible printed circuit board 7 are arranged.

The cover 2 includes an image side cover 10 that covers the case 97, the first flexible printed circuit board 6, and the second flexible printed circuit board 7 from the image side (−Z direction) in the optical axis L direction, and the case 97 and the first flexible printed circuit board. A subject side cover 11 that covers the second flexible printed circuit board 7 from the subject side (+ Z direction) in the optical axis L direction is provided. The subject side cover 11 includes two members, a first cover 12 and a second cover 13 located in the + X direction of the first cover 12. The second cover 13 is made of resin, the image side cover 10 and the first cover 12 are made of metal, and are made of a non-magnetic material.

The image side cover 10 includes an image side cover main body 140 made of a flat metal plate, and a first elastic engaging portion 141 and a second elastic engaging portion 142 provided on the outer peripheral edge of the image side cover main body 140. The first elastic engaging portion 141 is locked to the first locking portion 143 provided on the case 97. As a result, the case 97 is fixed to the image side cover 10. Further, the second elastic engaging portion 142 is locked to a second locking portion (not shown) provided on the second cover 13. As a result, the second cover 13 is fixed to the image side cover 10. Further, the first flexible printed circuit board 6 and the second flexible printed circuit board 7 are fixed to the image side cover 10 via the reinforcing plate 19.

The second cover 13 includes an upper plate portion 150 facing the image side cover 10 in the Z direction, a first side plate 151 extending in the Y direction, and a second side plate 152 and a third side plate 153 extending parallel to the X direction. Be prepared. The second cover 13 is connected to the case 97 by fitting the hook 155 protruding from the −X side edge of the upper plate portion 150 to the fitting portion 156 provided on the case 97. The hook 155 and the fitting portion 156 are arranged at two positions separated in the Y direction. The fitting portion 156 is formed by cutting out a corner portion connecting the frame-shaped plate portion 98 of the case 97 and the second side plate 102.

The first cover 12 includes a covering portion 160 that extends to a position where the end portion in the + X direction covers the end portion in the −X direction of the second cover 13 and covers the connection portion between the case 97 and the second cover 13. A recess 161 recessed to a depth substantially equal to the plate thickness of the first cover 12 is provided on the surface of the end portion of the second cover 13 on the case 97 side (−X direction). Therefore, the first cover 12 is assembled so that the connection portion between the case 97 and the second cover 13 is covered by the covering portion 160 by fitting the covering portion 160 into the recess 161.

The first cover 12 includes a frame-shaped cover portion 165 that covers the outer peripheral portion of the optical unit main body 3 from the + Z side. As shown in FIG. 1, the image pickup module 5 and the gimbal frame 80 project in the + Z direction from the opening 166 provided in the frame-shaped cover portion 165. The first cover 12 is put on the case 97, the covering portion 160 is positioned so as to fit in the recess 161 and then fixed to the frame-shaped plate portion 98 of the case 97 by welding. Therefore, the frame-shaped cover portion 165 is formed with welding marks 167 at a plurality of locations overlapping the frame-shaped plate portion 98 in the Z direction (see FIG. 1).

(Case base material and case manufacturing method)
FIG. 16 is a developed view of the case base material 200. As described above, the frame portion 99 that surrounds the movable body 20, the rotation support mechanism 21, and the gimbal frame 80 from the outer peripheral side, and the frame-shaped plate portion 98 that extends from one end of the frame portion 99 in the optical axis L direction to the inner peripheral side. The case 97 provided with the above is made of metal, and the case base material 200 obtained by punching a single sheet metal is bent to form a three-dimensional case 97. As shown in FIG. 16, the case base material 200 includes a first base material portion 210 constituting the frame-shaped plate portion 98 of the case 97 and a second base material portion 220 constituting the frame portion 99 of the case 97. There is. The first base material portion 210 is octagonal and has a rectangular opening 98a in the center.

The second base material portion 220 is connected to the outer peripheral edge of the first base material portion 210. The second base material portion 220 includes eight side plate base material portions constituting the eight side plates included in the frame portion 99. That is, the second base plate portion 220 constitutes the first side plate base material portion 221 constituting the first side plate 101, the second side plate base material portion 222 constituting the second side plate 102, and the third side plate 103. The third side plate base material portion 223, the fourth side plate base material portion 224 constituting the fourth side plate 104, the fifth side plate base material portion 225 constituting the fifth side plate 105, and the sixth side plate 106. It includes a base plate portion 226 for the sixth side plate, a base material portion 227 for the seventh side plate constituting the seventh side plate 107, and a base material portion 228 for the eighth side plate constituting the eighth side plate 108.

In the developed shape shown in FIG. 16, these eight side plate base material portions are connected to eight sides constituting the outer peripheral edge of the first base material portion 210, and the eight side plate base material portions are connected to each other. In a state of being separated from each other, they radiate from the outer peripheral edge of the first base material portion 210 to the outer peripheral side. The outer peripheral edge of the first base plate portion 210 includes a first side 211 connected to the first side plate base material portion 221, a second side 212 connected to the second side plate base material portion 222, and a third side plate base material portion 223. The third side 213 is connected, the fourth side 214 is connected to the fourth side plate base material portion 224, the fifth side 215 is connected to the fifth side plate base material portion 225, and the sixth side 216 is connected to the sixth side plate base material portion 226. , A seventh side 217 connected to the seventh side plate base material portion 227, and an eighth side 218 connected to the eighth side plate base material portion 228 are provided. The first side 211 to the eighth side 218 are bending positions when the case base material 200 is bent into a three-dimensional shape.

The case 97 is provided with a through portion (opening) for arranging the coils (first coil 110, second coil 112, third coil 114) arranged in the fixed body 23. Therefore, in the case base material 200, the base material portion 221 for the first side plate is punched into a shape provided with the opening 109 for holding the first coil. Further, the base material portion 223 for the third side plate is punched into a shape provided with the opening 111 for holding the second coil. The base material portion 224 for the fourth side plate is punched into a shape provided with the opening 113 for holding the third coil.

As described above, the case 97 is provided with a fitting portion 156 for connecting to the second cover 13. The fitting portion 156 is provided at a corner portion where the frame-shaped plate portion 98 and the second side plate 102 are connected. Therefore, in the case base material 200, the rectangular through portion 229 for forming the fitting portion 156 on the second side 212, which is the portion where the first base material portion 210 and the base material portion 222 for the second side plate are connected. Is punched out.

When the case 97 is manufactured, the through hole 117 and the tubular portion 118 are formed when the case base material 200 is punched out from one sheet metal member. As shown by the broken line in FIG. 16, the positions where the through hole 117 and the tubular portion 118 are formed are the base plate portion 227 for the seventh side plate and the base material portion 228 for the eighth side plate. When forming the through hole 117 and the tubular portion 118, as described above, first, a pilot hole for the through hole 117 is formed in the case base material 200, and then the through hole 117 and the tubular portion 118 are formed by burring. Form.

After forming the through hole 117 and the tubular portion 118, the eight side plate base material portions extending radially are bent at substantially right angles in the same direction. That is, the first side 211, the second side 212, the third side 213, the fourth side 214, the fifth side 215, the sixth side 216, the seventh side 217, and the eighth side 218 of the first base material portion 210. At each position, the case base material 200 is bent at a substantially right angle. Then, after bending, the edges of the side plate base material portions adjacent to each other in the circumferential direction are connected by welding. As a result, the frame portion 99 is formed, and the case 97 including the frame portion 99 and the frame-shaped plate portion 98 is completed.

(Main effects of this example)
As described above, the optical unit 1 with the shake correction function of this example includes a movable body 20 including the lens 4, a rotation support mechanism 21 that rotatably supports the movable body 20 about the optical axis L of the lens 4. With the gimbal mechanism 22 that rotatably supports the rotary support mechanism 21 around the first axis R1 intersecting the optical axis L and rotatably around the second axis R2 intersecting the optical axis L and the first axis R1. , A fixed body 23 that supports the movable body 20 via a gimbal mechanism 22 and a rotation support mechanism 21. The gimbal mechanism 22 connects the gimbal frame 80, the rotation support mechanism 21 and the gimbal frame 80 rotatably around the first axis R1, the first connection mechanism 81, and the fixed body 23 and the gimbal frame 80 on the second axis R2. A second connection mechanism 82 that rotatably connects around is provided. The fixed body 23 includes a movable body 20, a rotation support mechanism 21, and a metal case 97 that surrounds the outer peripheral side of the gimbal frame 80. The case 97 is a pair of side plates (seventh side plates) facing each other in the second axis R2 direction. 107, the eighth side plate 108) is provided. The second connection mechanism 82 is inserted into the tubular portion 118 protruding in the second axis R2 direction from the opening edge of the through hole 117 penetrating each of the seventh side plate 107 and the eighth side plate 108 in the second axis R2 direction. A pair of second shaft side shafts 84 protruding inward on the two shafts R2 are provided at diagonal positions in the second shaft R2 direction of the gimbal frame 80, and the tips of the second shaft side shafts 84 come into contact with each other. A biaxial side concave curved surface 95 is provided.

According to this example, the rotary support mechanism 21 that rotatably supports the movable body 20 around the optical axis L is rotatably supported around the first axis R1 and the second axis R2 by the gimbal mechanism 22. Therefore, even when the movable body 20 is rotating around the first axis R1 or the second axis R2, the movable body 20 can be rotated around a rotation axis that coincides with the optical axis L.

Further, in this example, the fixed body 23 includes a metal case 97 that surrounds the outer peripheral side of the movable body 20, and the gimbal frame 80 is rotatably connected to the fixed body 23 around the second axis R2. The two connection mechanism 82 is provided on the side plates (7th side plate 107, 8th side plate 108) of the case 97. The seventh side plate 107 and the eighth side plate 108 are integrally formed with a tubular portion 118 projecting from the opening edge of the through hole 117 and the through hole 117, respectively, and the second shaft side shaft 84 is inserted into the tubular portion 118. The second connection mechanism 82 is configured by projecting the gimbal frame 80 toward the inner peripheral side and contacting the concave curved surface 95 on the second axis side provided on the gimbal frame 80. In this way, the case 97 is made of metal to make it thinner, and the through hole 117 and the tubular portion 118 constituting the second connection mechanism 82 are integrally formed with the case 97 to form the second connection mechanism 82. The configuration can be simplified, and the case 97 and the second connection mechanism 82 can be thinned in the radial direction. Therefore, the optical unit 1 with a runout correction function can be miniaturized.

In the case 97 of this example, the movable body 20, the rotation support mechanism 21, the frame portion 99 surrounding the outer peripheral side of the gimbal frame 80, and the frame-shaped plate portion extending from one end of the frame portion 99 in the optical axis L direction to the inner peripheral side. 98 is provided, and the frame portion 99 and the frame-shaped plate portion 98 are made of metal plates having the same plate thickness. If the plate thickness of each part of the case 97 is the same, the case base material 200 obtained by punching out one sheet metal member can be bent to manufacture the case 97 having a three-dimensional shape. Then, according to such a manufacturing method, when the case base material 200 is punched out, a pilot hole can be formed in the sheet metal member, and then burring processing can be performed to form the through hole 117 and the tubular portion 118. Therefore, the through hole 117 and the tubular portion 118 constituting the second connection mechanism 82 can be integrally formed with the case 97. When the case 97 is formed by drawing, it is difficult to integrally form the through hole 117 and the tubular portion 118 in the side plate of the case 97 having a three-dimensional shape. However, if the method of this example is used, The through hole 117 and the tubular portion 118 can be integrally formed with the flat plate-shaped case base material 200. Therefore, the case 97 and the second connection mechanism 82 can be made thinner.

In this example, the frame portion 99 of the case 97 has openings (first coil holding opening 109, second coil holding opening 111, third coil holding opening) for arranging the coil of the runout correction magnetic drive mechanism 25. A coil holding opening 113) is formed, and the coil arranged therein is fixed to the third flexible printed circuit board 8 which is routed along the outer peripheral surface of the frame portion 99. By providing the frame portion 99 with an opening for coil placement in this way, it is possible to secure a space for arranging the coils and to reduce the size of the optical unit 1 with a runout correction function. Further, in the manufacturing method of the case 97 of this example, when one sheet metal member is punched out to manufacture the case base material 200, the first coil holding opening 109, the second coil holding opening 111, and the third coil are manufactured. The case base material 200 can be punched out into a shape provided with the holding opening 113. Therefore, a metal case 97 having an opening for coil placement can be easily manufactured.

In this example, the movable body 20 and the case 97 are housed in the cover 2, and the cover 2 is arranged on the + X direction side of the case 97 and is a bent portion 15 of the first flexible printed circuit board 6 and the second flexible printed circuit board 7. A second cover 13 for covering the above is provided. Since the case 97 includes a fitting portion 156 formed at a corner portion connecting the frame-shaped plate portion 98 and the frame portion 99, the second cover 13 includes a hook 155 that fits into the fitting portion 156. The case 97 and the second cover 13 can be connected by inserting the hook 155 into the fitting portion 156. In the manufacturing method of the case 97 of this example, the metal case 97 in which the fitting portion 156 is provided at the corner portion connecting the frame-shaped plate portion 98 and the frame portion 99 can be easily manufactured. That is, when one sheet metal member is punched out to manufacture the case base material 200, the bent position where the second side plate base material portion 222 and the first base material portion 210 are connected is punched out to form the penetrating portion 229. be able to. As a result, the fitting portion 156 can be formed at the bent position by bending the case base material 200 into a three-dimensional shape.

In this example, the first base material portion 210 constituting the octagonal frame-shaped plate portion 98 and the second base material portion 220 including the eight side plate base material portions constituting the frame portion 99 are connected. The case base material 200 having a developed shape is punched out. At that time, the eight side plate base material portions are punched out from the eight sides forming the outer peripheral edge of the first base material portion 210 into a developed shape extending toward the outer peripheral side in a state of being separated from each other. In this way, when forming the three-dimensional case 97, each of the eight side plate base material portions may be bent at a substantially right angle in the same direction with respect to the first base material portion 210. Is easy to manufacture.

(Modification example 1)
FIG. 17A is a developed view of the case base material 200A of the first modification. FIG. 17B is a perspective view of Case 97A of Modification 1. Hereinafter, only the points different from the case base material 200 and the case 97 will be described, and the same points will be designated by the same reference numerals and the description thereof will be omitted. In the case base material 200A of the first modification, the case base material 200A is bent to form a three-dimensional shape, and then the edges of the side plate base material portions adjacent to each other in the circumferential direction are caulked and fixed instead of welding. Therefore, the second base plate portion 220A is in the circumferential direction of the fifth side plate base material portion 225, the sixth side plate base material portion 226, the seventh side plate base material portion 227, and the eighth side plate base material portion 228. It is punched into a shape in which both ends are extended to form a fixing edge 230.

As shown in FIG. 17B, when manufacturing the case 97A of the modified example 1, the case base material 200A is punched out from one sheet metal member in the same manner as in the above embodiment, and at that time, the through hole 117 and the cylinder Form the part 118. After that, the eight side plate base material portions constituting the second base material portion 220A are bent in the same direction with respect to the first base material portion 210. When connecting the side plate base material portions adjacent to each other in the circumferential direction after bending, the fifth side plate base material portion 225, the sixth side plate base material portion 226, the seventh side plate base material portion 227, and the second The fixing edge portions 230 provided on both sides of the side plate base material portion 228 in the circumferential direction are bent and overlapped with the end portions of the side plate base material portions adjacent to each other in the circumferential direction, and the overlapped portion is caulked and fixed.

In the completed case 97A, as shown in FIG. 17B, caulking portions 231 are formed at both ends of the first side plate 101, the second side plate 102, the third side plate 103, and the fourth side plate 104 in the circumferential direction. , The caulking portion 231 is formed at the connection position of the side plate base material portions adjacent to each other in the circumferential direction. In the first modification, the ends of the case base material 200A can be firmly connected to each other by caulking, so that the strength of the case 97 can be increased.

(Modification 2)
FIG. 18A is a developed view of the case base material 200B of the modified example 2. FIG. 18B is a perspective view of the case 97B of the modified example 2. The case base material 200B of the modified example 2 includes a first base material portion 210B constituting the frame-shaped plate portion 98 and a second base material portion 220B forming the frame portion 99. When the case base material 200B is punched out, the second base material portion 220B is punched out in a shape in which eight side plate base material portions are connected in a row. Further, the second base material portion 220B has a developed shape in which one of the eight side plate base material portions is connected to one of the eight sides constituting the outer peripheral edge of the first base material portion 210B. It has been punched out. In the example of FIG. 18A, the second side plate base material portion 222B is connected to the first base material portion 210B, the second side plate base material portion 222B, the sixth side plate base material portion 226B, and the second 4 side plate base material portion 224B, 8th side plate base material portion 228B, 1st side plate base material portion 221B, 5th side plate base material portion 225B, 3rd side plate base material portion 223B, 7th side plate base material Parts 227B are arranged in this order and are connected in a row.

When manufacturing the case 97B of the modified example 2, the case base material 200B is punched out from one sheet metal member in the same manner as in each of the above forms, and at that time, the through hole 117 and the tubular portion 118 are formed. After that, the second base material portion 220 is bent so as to be tilted by 45 ° at the position of the boundary line of the adjacent side plate base material portions to form an octagonal tubular shape extending in the L direction of the optical axis, and the first base plate portion 220 is formed. The material portion 210 is bent at a substantially right angle to the second base material portion 220. In this example, the first base material portion 210 is bent at a substantially right angle with respect to the second side plate base material portion 222B. At the position where the first base material portion 210 and the second side plate base material portion 222B are connected, a penetrating portion 229 for forming the fitting portion 156 is punched out in the same manner as in each of the above embodiments.

In the second modification, as shown in FIGS. 18A and 18B, a fitting recess 232 is formed at the edge of the first base material portion 210B, and the fitting recess 232 and the edge of the second base material portion 220B are formed. The first base material portion 210B and the second base material portion 220B are assembled in a state in which the fitting convex portion 233 formed in the above is fitted. The fitting convex portion 233 is formed at three positions: a first side plate base material portion 221B, a third side plate base material portion 223B, and a fourth side plate base material portion 224B. The case 97B is completed by fixing the fitting portion between the fitting concave portion 232 and the fitting convex portion 233 by welding or the like.

(Modification 3)
FIG. 19A is a developed view of the case base material 200C of the modified example 3. FIG. 19B is a perspective view of the case 97C and the first cover 12C of the modified example 3. Hereinafter, the same configuration as that of the second modification will be designated by the same reference numerals, description thereof will be omitted, and only the differences will be described. In the case base material 200C of the third modification, a part of the fitting convex portion 233 formed on the edge of the second base material portion 220B is formed into the positioning convex portion 234 having a protrusion dimension larger than that of the fitting convex portion 233. It is a modified version.

When the case base material 200 of the modified example 3 is bent into a three-dimensional shape, as shown in FIG. 19B, the tip of the positioning convex portion 234 is formed from the frame-shaped plate portion 98 formed by the first base material portion 210B. It will be in a protruding state. The first cover 12C is formed with a positioning hole 235 into which the positioning protrusion 234 is fitted. Therefore, when the first cover 12C is put on the case 97C, the first cover 12C can be positioned so that the positioning convex portion 234 fits into the positioning hole 235.

In the manufacturing method of the case 97 of the third modification, when the case base material 200C is punched out, a shape that serves as a positioning convex portion 234 can be provided on the edge of the case base material 200C. As a result, the tip of the positioning convex portion 234 can be projected from the frame-shaped plate portion 98 by bending the case base material 200C into a three-dimensional shape. Therefore, the case 97C provided with the positioning convex portion 234 can be easily manufactured.

1 ... Optical unit with runout correction function, 2 ... Cover, 3 ... Optical unit body, 4 ... Lens, 5 ... Imaging module, 6 ... 1st flexible print board, 7 ... 2nd flexible print board, 8 ... 3rd flexible Printed substrate, 9 ... Imaging element, 10 ... Image side cover, 11 ... Subject side cover, 12, 12C ... 1st cover, 13 ... 2nd cover, 15 ... Bent part, 16 ... 1st bent part, 17 ... 2nd Bent part, 18 ... 3rd bent part, 19 ... Reinforcing plate, 20 ... Movable body, 21 ... Rotation support mechanism, 22 ... Gimbal mechanism, 23 ... Fixed body, 25 ... Magnetic drive mechanism for runout correction, 26 ... First runout Magnetic drive mechanism for correction, 27 ... Magnetic drive mechanism for second runout correction, 28 ... Magnetic drive mechanism for rolling correction, 29 ... Holder, 30 ... Imaging module main body, 31 ... Cylindrical part, 32 ... Movable body main body, 33 ... Movable body protrusion, 35 ... 1st side wall, 36 ... 2nd side wall, 37 ... 3rd side wall, 38 ... 4th side wall, 39 ... 5th side wall, 40 ... 6th side wall, 41 ... 7th side wall, 42 ... 8th side wall, 42a ... opening, 44 ... 1st yoke, 45 ... 1st magnet, 46 ... 2nd yoke, 47 ... 2nd magnet, 48 ... 3rd yoke, 49 ... 3rd magnet, 51 ... plate roll, 52 ... Plate holder, 53 ... Rotation mechanism, 54 ... First pressurizing mechanism, 55 ... Second pressurizing mechanism, 56 ... Opposing portion, 57 ... Plate roll annular portion, 58 ... Plate roll extension portion, 59 ... Plate roll Ring plate, 60 ... Plate roll ring wall, 61 ... Plate roll ring groove, 62 ... Pressurizing magnet, 63 ... Fixed part, 63a, 63b ... Projection, 65 ... Plate holder ring part, 66 ... Plate holder extension part, 66a ... Plate holder 1st extension part, 66b ... Plate holder 2nd extension part, 66c ... Plate holder 3rd extension part, 67 ... Plate holder annular plate, 68 ... Plate holder arc wall, 69 ... 1st axis side concave Curved surface, 70 ... Plate holder arc groove, 71 ... Sphere, 72 ... Retainer, 72a ... Sphere holding hole, 72b ... Outer retainer part, 72c ... Inner retainer part, 73 ... Outer protrusion, 74 ... Inner protrusion, 75 ... Retainer Through hole, 77 ... Plate member, 79 ... Plate roll fixing hole, 80 ... Gimbal frame, 81 ... First connection mechanism, 82 ... Second connection mechanism, 83 ... First shaft side shaft, 84 ... Second shaft side shaft, 85 ... Gimbal frame main body, 85a ... Central plate, 85b ... First inclined plate, 85c ... Second inclined plate, 86 ... First axis side gimbal frame extension, 86a ... First axis Side gimbal frame extension part 1st extension part, 86b ... 1st axis side gimbal frame extension part 2nd extension part, 86c ... 1st axis side gimbal frame extension part 3rd extension part, 87 ... 2nd Shaft side gimbal frame extension part, 87a ... 2nd axis side gimbal frame extension part 1st extension part, 87b ... 2nd axis side gimbal frame extension part 2nd extension part, 87c ... 2nd axis side gimbal frame Extension part 3rd extension part, 90 ... opening, 91 ... rib, 92 ... gimbal frame extension part through hole, 93 ... first shaft side shaft support cylinder part, 94 ... gimbal frame extension part protrusion, 95 ... 2nd axis side concave curved surface, 97, 97A, 97B, 97C ... Case, 98 ... Frame-shaped plate part, 99 ... Frame part, 101 ... 1st side plate, 102 ... 2nd side plate, 103 ... 3rd side plate, 104 ... 4th side plate, 105 ... 5th side plate, 106 ... 6th side plate, 107 ... 7th side plate, 108 ... 8th side plate, 109 ... 1st coil holding opening, 110 ... 1st coil, 111 ... 2nd coil Holding opening, 112 ... 2nd coil, 113 ... 3rd coil holding opening, 114 ... 3rd coil, 115 ... Notch, 117 ... Through hole, 118 ... Cylinder, 120 ... Welding mark, 123 ... 1st magnetic plate, 125 ... 2nd magnetic plate, 130 ... pressure sensor, 40 ... image side cover body, 141 ... first elastic engaging portion, 142 ... second elastic engaging portion, 143 ... first locking portion, 150 ... upper plate, 151 ... first side plate, 152 ... second side plate, 153 ... third side plate, 155 ... hook, 156 ... fitting part, 160 ... covering part, 161 ... recess, 165 ... frame-shaped cover part, 166 ... Opening, 167 ... Welding marks, 200, 200A, 200B, 200C ... Case base material, 210, 210B ... First base material part, 211 ... First side, 212 ... Second side, 213 ... Third side, 214 ... 4th side, 215 ... 5th side, 216 ... 6th side, 217 ... 7th side, 218 ... 8th side, 220, 220A, 220B, 220C ... 2nd base material part, 221, 221B ... 1st Side plate base material part, 222, 222B ... Second side plate base material part, 223, 223B ... Third side plate base material part, 224, 224B ... Fourth side plate base material part, 225, 225B ... For fifth side plate Base material part, 226, 226B ... 6th side plate base material part, 227, 227B ... 7th side plate base material part, 228, 228B ... 8th side plate base material part, 229 ... Penetration part, 230 ... Fixing edge 231 ... Caulking part, 232 ... Fitting concave part, 233 ... Fitting convex part, 234 ... Positioning convex part, 235 ... Positioning hole L ... Optical axis, R1 ... 1st axis, R2 ... 2nd axis

Claims (11)

A movable body with a lens and
A rotary support mechanism that rotatably supports the movable body about the optical axis of the lens,
A gimbal mechanism that rotatably supports the rotary support mechanism around a first axis that intersects the optical axis, and rotatably supports the optical axis and a second axis that intersects the first axis.
It has a gimbal mechanism and a fixed body that supports the movable body via the rotation support mechanism.
The gimbal mechanism includes a gimbal frame, a first connection mechanism for rotatably connecting the rotation support mechanism and the gimbal frame around the first axis, and the fixed body and the gimbal frame around the second axis. Equipped with a second connection mechanism that connects rotatably
The fixed body
A metal case that surrounds the movable body, the rotation support mechanism, and the outer peripheral side of the gimbal frame.
The case includes a pair of side plates facing each other in the second axial direction.
The second connection mechanism is inserted into a tubular portion that projects in the second axial direction from the opening edge of a through hole that penetrates each side plate in the second axial direction, and projects on the second axis toward the inner circumference. It is characterized by including a pair of second shaft side shafts and a second shaft side concave curved surface provided at diagonal positions in the second shaft direction of the gimbal frame and in contact with the tip of the second shaft side shaft. Optical unit with runout correction function. The case is
A frame portion that surrounds the movable body, the rotation support mechanism, and the outer peripheral side of the gimbal frame,
A frame-shaped plate portion extending from one end in the optical axis direction of the frame portion to the inner peripheral side is provided.
The optical unit with a runout correction function according to claim 1, wherein the frame portion and the frame-shaped plate portion are made of metal plates having the same plate thickness. A runout correction magnetic drive mechanism for swinging the movable body around the first axis and the second axis is provided, and the runout correction magnetic drive mechanism includes a magnet arranged on the movable body and the fixed body. Equipped with a coil placed in
The coil is arranged in a coil holding opening that penetrates the frame portion in a direction orthogonal to the optical axis, and is fixed to a flexible printed circuit board that is routed along the outer peripheral surface of the frame portion. The optical unit with a runout correction function according to claim 2. The frame portion includes a plurality of side plates including the pair of side plates.
The optical unit with a runout correction function according to claim 2 or 3, wherein a caulking portion is provided at a connection position of the side plates adjacent to each other in the circumferential direction. The fixed body comprises a cover for accommodating the movable body and the case.
The case includes a positioning convex portion protruding from a corner portion connecting the frame-shaped plate portion and the frame portion.
The optical unit with a runout correction function according to any one of claims 2 to 4, wherein the cover includes a positioning hole into which the positioning convex portion is fitted. The fixed body comprises a cover for accommodating the movable body and the case.
The case includes a fitting portion formed at a corner portion connecting the frame-shaped plate portion and the frame portion.
The optical unit with a runout correction function according to any one of claims 2 to 4, wherein the cover includes a hook that fits into the fitting portion. The method for manufacturing an optical unit with a runout correction function according to claim 2.
A method for manufacturing an optical unit with a runout correction function, which comprises bending a case base material obtained by punching one sheet metal member to manufacture the case having a three-dimensional shape. The method for manufacturing an optical unit with a runout correction function according to claim 7, wherein the tubular portion is formed by burring when the case base material is punched from the sheet metal member. The frame-shaped plate portion is octagonal and has an octagonal shape.
The frame portion includes eight side plates including the pair of side plates.
The case base material is connected to a first base material portion constituting the frame-shaped plate portion and a second base material portion provided with eight side plate base material portions constituting the eight side plates. Unfolded shape
When the case base material is punched out, the eight side plate base material portions are punched out from the eight sides forming the outer peripheral edge of the first base material portion into a developed shape extending toward the outer peripheral side in a state of being separated from each other.
The claim is characterized in that, when forming the three-dimensional case from the case base material, each of the eight side plate base material portions is bent at a substantially right angle in the same direction with respect to the first base material portion. 7. The method for manufacturing an optical unit with a runout correction function according to 7 or 8. The method for manufacturing an optical unit with a runout correction function according to claim 9, wherein the ends of the side plate base material portions adjacent to each other in the circumferential direction are overlapped and caulked and fixed. The frame-shaped plate portion is octagonal and has an octagonal shape.
The frame portion includes eight side plates including the pair of side plates.
The case base material is connected to a first base material portion constituting the frame-shaped plate portion and a second base material portion provided with eight side plate base material portions constituting the eight side plates. Unfolded shape
When punching out the case base material, one of the eight side plate base material portions connected in a row is one of the eight sides constituting the outer peripheral edge of the first base material portion. Punch into an unfolded shape that connects to one side,
When forming the three-dimensional case from the case base material, the second base material portion is bent at the boundary position of the adjacent side plate base material portions to form a tubular shape, and the first base material portion is formed. The method for manufacturing an optical unit with a runout correction function according to claim 7 or 8, wherein the optical unit is bent at a substantially right angle with respect to the second base material portion.

Images