JP7344785B2 - Optical unit with shake correction function - Google Patents

Description

The present invention relates to an optical unit with a shake correction function that corrects shake of an optical unit.

Optical units mounted on mobile terminals and moving objects have a mechanism that corrects shake by swinging or rotating a movable body equipped with a lens, in order to suppress disturbances in captured images when the mobile terminal or moving object moves. There are some that have the following. Patent Document 1 discloses this type of optical unit with a shake correction function.

The optical unit with a shake correction function disclosed in Patent Document 1 includes a movable body that includes a camera module and a cylindrical holder that holds the camera module, and a movable body that swings around two axes that intersect with the optical axis and intersect with each other. The present invention includes a gimbal mechanism that supports the movable body, a fixed body that supports the movable body via the gimbal mechanism, and a shake correction drive mechanism that swings the movable body. The shake correction drive mechanism includes a magnet fixed to a movable body and a coil fixed to a fixed body. The magnet is fixed to the outer peripheral surface of the cylindrical holder of the movable body. The cylindrical holder is made of resin. The coil is fixed to the inner surface of a base frame that surrounds the cylindrical holder from the outer peripheral side of the fixed body.

Japanese Patent Application Publication No. 2019-174790

When an impact is applied to a mobile device or a moving object, the impact is also applied to the optical unit with a shake correction function mounted on these devices, so the movable object moves in the radial direction perpendicular to the optical axis and the parts held by the moving object and parts held by the fixed body may collide. For example, when a magnet held by a movable body collides with a coil held by a fixed body, there is a problem in that the coil is damaged.

If a stopper mechanism is provided between the movable body and the fixed body to restrict the range of movement of the movable body in the radial direction, it is possible to avoid collision between the coil and the magnet and avoid damage to the coil. Here, the stopper mechanism is, for example, provided with a protrusion that protrudes from the base frame of the fixed body toward the movable body toward the inner peripheral side of the coil and faces the cylindrical holder of the movable body at a narrow interval. be able to. However, in such a stopper mechanism, the cylindrical holder and the protrusion come into contact when regulating the movement range of the movable body. Therefore, when the movable body repeatedly comes into contact with the contact portion, fine dust may be generated from the resin cylindrical holder. There is a problem that fine dust affects photographing by the camera module.

In view of these points, it is an object of the present invention to reliably avoid collisions between magnets held on a movable body and coils held on a fixed body, and to prevent collisions caused by contact between the movable body and the fixed body. An object of the present invention is to provide an optical unit with a shake correction function that can prevent or suppress the generation of fine dust.

In order to solve the above problems, an optical unit with a shake correction function of the present invention includes a movable body including a camera module, a movable body that rotates around a first axis intersecting the optical axis of the camera module, and a movable body that includes a camera module. a gimbal mechanism that supports the movable body rotatably around a second axis intersecting the optical axis and the first axis; a fixed body that supports the movable body via the gimbal mechanism; and a shake correction magnetic drive mechanism that rotates around the second axis, and a stopper mechanism that restricts a movement range in which the movable body moves in a radial direction perpendicular to the optical axis, and the fixed body includes: It has a fixed body side frame plate portion surrounding the movable body from the outside in the radial direction, and the shake correction magnetic drive mechanism includes a coil fixed to the fixed body side frame plate portion, a magnet fixed to the movable body, The fixed body side frame plate is made of non-magnetic metal, the coil is fixed to a surface of the fixed body side frame plate opposite to the movable body, and the magnet is fixed to the fixed body side frame plate. The stopper mechanism is characterized in that the stopper mechanism includes the fixed body side frame plate part and the magnet.

In the present invention, the stopper mechanism that restricts the radial movement range of the movable body includes a fixed body side frame plate portion surrounding the movable body in the fixed body, and a magnet held by the movable body. That is, in the stopper mechanism, the radial movement range is regulated by the magnet fixed to the movable body coming into contact with the fixed body side frame member. Here, the coil is fixed to the outer surface of the fixed body side frame plate part. Therefore, when the movable body moves in the radial direction, the coil and the magnet do not collide. Therefore, even if the movable body moves excessively in the radial direction due to an external impact, the coil can be prevented from being damaged. Further, when regulating the radial movement range of the movable body, the metal fixed body side frame plate portion and the magnet come into contact. Therefore, even if the fixed body side frame plate portion and the magnet repeatedly come into contact with each other, generation of fine dust can be suppressed compared to the case where one of the two members in contact is made of resin. Furthermore, since the fixed body side frame plate part is made of metal, the thickness of the fixed body side frame plate part in the radial direction can be made thinner than when the fixed body side frame plate part is made of resin. Therefore, even when the fixed body side frame plate portion is disposed between the coil and the magnet, the coil and the magnet can be brought close to each other. Therefore, the shake correction magnetic drive mechanism can exert a driving force to drive the movable body. Furthermore, since the thickness of the fixed body side frame plate portion in the radial direction can be reduced, it is possible to suppress the optical unit with a shake correction function from increasing in size in the radial direction.

In the present invention, the movable body may include a holder surrounding the camera module from an outer peripheral side, the holder may be made of magnetic metal, and the magnet may be fixed to the holder. In this way, the holder can function as a yoke for the magnet.

In the present invention, the shake correction magnetic drive mechanism includes a first shake correction magnetic drive mechanism provided between the first axis and the second axis in a circumferential direction around the optical axis; and a second shake correction magnetic drive mechanism provided between the first axis and the second axis on the opposite side of the first shake correction magnetic drive mechanism with respect to the first axis, and the coil a first coil of the first shake correction magnetic drive mechanism fixed to the outer surface of the fixed body side frame plate; and a second shake correction magnetic drive mechanism fixed to the outer surface of the fixed body side frame plate. a second coil of a drive mechanism, and as the magnet, a first magnet of the first shake correction magnetic drive mechanism that is fixed to the holder and faces the first coil via the fixed body side frame plate part. and a second magnet of the second shake correction magnetic drive mechanism that is fixed to the holder and faces the second coil via the fixed body side frame plate. In this way, the movement range of the movable body can be restricted in two directions around the optical axis.

In the present invention, the fixed body includes a flange portion that is bent from one end of the fixed body side frame plate portion in the optical axis direction and extends toward the outer circumferential side, and the fixed body side frame plate portion includes a flange portion that is bent from one end in the optical axis direction of the fixed body side frame plate portion, and a first frame plate portion on the fixed body side to which is fixed, a second frame plate portion on the fixed body side located on the opposite side of the first frame plate portion on the fixed body side with the optical axis in between, and the second coil. a fixed third frame plate portion on the fixed body side; and a fourth frame plate portion on the fixed body side located on the opposite side of the third frame plate portion on the fixed body side with the optical axis therebetween, and the flange portion may include a first frame plate portion flange portion bent from the first frame plate portion on the fixed body side, and a third frame plate portion flange portion bent from the third frame plate portion on the fixed body side. . If the flange portion is provided, even if the thickness of the fixed body side frame plate portion in the radial direction is reduced, it is possible to suppress the fixed body side frame plate portion that holds the coil from bending.

In the present invention, the holder includes a metal holder-side frame plate portion surrounding the camera module, and the holder-side frame plate portion includes a holder-side first frame plate portion to which the first magnet is fixed, and a holder-side first frame plate portion to which the first magnet is fixed. The second magnet is fixed to a second frame plate portion on the holder side that is located on the opposite side of the first frame plate portion on the holder side with the optical axis in between and faces the second frame plate portion on the fixed body side. a holder-side third frame plate portion located on the opposite side of the fixed body-side third frame plate portion with the optical axis therebetween and facing the fixed body-side fourth frame plate portion; a plate portion, wherein the holder-side second frame plate portion has a first bent plate portion that protrudes toward the outer circumferential side midway in the circumferential direction and faces the fixed body-side second frame plate portion with a predetermined gap. The fourth frame plate portion on the holder side includes a second bent plate portion that protrudes toward the outer circumferential side midway in the circumferential direction and faces the fourth frame plate portion on the fixed body side with a predetermined gap, and the stopper mechanism may include the first bending plate part and the second bending plate part. In this way, the movement range of the movable body can be restricted in four directions around the optical axis.

In the present invention, in the stopper mechanism, the radial movement range is regulated by the magnet fixed to the movable body coming into contact with the fixed body side frame member. Here, the coil is fixed to the outer surface of the fixed body side frame plate part. Therefore, when the movable body moves in the radial direction, the coil and the magnet do not collide. Therefore, even if the movable body moves excessively in the radial direction due to an external impact, the coil can be prevented from being damaged. Further, the fixed body side frame plate portion that comes into contact with the magnet is made of metal. Therefore, even if the fixed body side frame plate portion and the magnet repeatedly come into contact with each other, generation of fine dust can be suppressed. Furthermore, since the fixed body side frame plate portion is made of metal, the thickness of the fixed body side frame plate portion in the radial direction can be reduced. Therefore, even when the fixed body side frame plate portion is disposed between the coil and the magnet, the coil and the magnet can be brought close to each other. Therefore, the shake correction magnetic drive mechanism can exert a driving force to drive the movable body. Furthermore, since the thickness of the fixed body side frame plate portion in the radial direction can be reduced, it is possible to suppress the optical unit with a shake correction function from increasing in size in the radial direction.

FIG. 2 is a perspective view of an optical unit with a shake correction function to which the present invention is applied. FIG. 3 is a plan view of the optical unit with a shake correction function with the cover removed. FIG. 3 is an exploded perspective view of an optical unit with a shake correction function. FIG. 3 is an exploded perspective view of the gimbal frame receiving member. It is a perspective view of a holder, a 1st magnet, and a 2nd magnet. It is a perspective view of a holder, a 1st magnet, and a 2nd magnet. FIG. 3 is a perspective view of the case, the first coil, and the second coil as viewed from the subject side. FIG. 3 is a perspective view of the case, the first coil, and the second coil when viewed from the side opposite to the subject. FIG. 3 is a side view of the gimbal frame, and a side view of the gimbal frame and the gimbal frame receiving member. 3 is a sectional view taken along line AA in FIG. 2. FIG.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an optical unit with a shake correction function to which the present invention is applied will be described below with reference to the drawings.

(overall structure)
FIG. 1 is a perspective view of an optical unit with a shake correction function. FIG. 2 is a plan view of the optical unit with a shake correction function with the cover removed, as viewed from the subject side. FIG. 3 is an exploded perspective view of the optical unit with a shake correction function. As shown in FIGS. 1 and 2, the optical unit 1 with a shake correction function includes a camera module 3 equipped with optical elements such as a lens 2. The optical unit 1 with a shake correction function is installed, for example, in a photographing device such as a camera-equipped mobile phone or a drive recorder, or an action camera or a wearable camera installed in a moving body such as a helmet, a bicycle, or a radio-controlled helicopter. In these optical devices, if the optical device is tilted during photographing, the camera module 3 will be tilted and the photographed image will be distorted. The optical unit 1 with a shake correction function corrects the tilt of the camera module 3 based on the acceleration, angular velocity, amount of shake, etc. detected by a detection means such as a gyroscope, in order to avoid disturbances in the photographed image.

In the following description, three mutually orthogonal axes are referred to as the X axis, Y axis, and Z axis. Further, the direction along the X-axis is the X-axis direction, one side of the X-axis direction is the -X direction, and the other side is the +X direction. The direction along the Y-axis is the Y-axis direction, one side of the Y-axis direction is the −Y direction, and the other side is the +Y direction. The direction along the Z-axis is the Z-axis direction, one side of the Z-axis direction is the -Z direction, and the other side is the +Z direction. The Z-axis direction is the optical axis L direction along the optical axis L of the camera module 3. The −Z direction is one of the optical axis L directions, and is the first direction. The +Z direction is the other direction of the optical axis L, and is a second direction. Further, the -Z direction (first direction) is the image side of the camera module 3, and the +Z direction is the subject side of the camera module 3. The -Z direction is the opposite side of the camera module 3 to the subject.

As shown in FIG. 1, the optical unit 1 with a shake correction function includes a movable body 4 including a camera module 3, a gimbal mechanism 5 that rotatably supports the movable body 4, and a gimbal mechanism 5 that supports the movable body 4 via the gimbal mechanism 5. The movable body 4 is provided with a fixed body 6 that supports the fixed body 6 and a shake correction magnetic drive mechanism 7 that swings the movable body 4 with respect to the fixed body 6. The optical unit 1 with a shake correction function performs shake correction by swinging the movable body 4 around two axes that intersect with the optical axis L of the camera module 3 and intersect with each other. In this example, the optical unit 1 with a shake correction function performs shake correction by swinging the movable body 4 around two axes that are orthogonal to the optical axis L of the camera module 3 and mutually orthogonal. That is, the optical unit 1 with a shake correction function performs shake correction in the pitching direction and shake correction in the yawing direction by performing shake correction around the X axis and shake correction around the Y axis.

The movable body 4 is rotatably supported by a gimbal mechanism 5 around a first axis R1 perpendicular to the optical axis L, and rotatable around a second axis R2 perpendicular to the optical axis L and the first axis R1. Supported. The first axis R1 and the second axis R2 are inclined at 45 degrees with respect to the X axis and the Y axis. By combining the rotation around the first axis R1 and the rotation around the second axis R2, the movable body 4 rotates around the X axis and the Y axis. Hereinafter, the axial direction that coincides with the first axis R1 will be referred to as the first axial direction, and the axial direction that coincides with the second axis R2 will be referred to as the second axial direction. A flexible printed circuit board 110 is connected to the movable body 4. The flexible printed circuit board 110 is pulled out in the +X direction.

As shown in FIGS. 2 and 3, the gimbal mechanism 5 includes a gimbal frame 10, a pair of movable body side connection mechanisms 11 provided at diagonal positions on the first axis R1 of the movable body 4, and a first axis of the fixed body 6. A pair of fixed body side connection mechanisms 12 provided at diagonal positions on the two axes R2 are provided. The gimbal frame 10 is a metal leaf spring. The movable body side connection mechanism 11 connects the gimbal frame 10 and the movable body 4 rotatably around the first axis R1. The fixed body side connection mechanism 12 connects the gimbal frame 10 and the fixed body 6 so as to be rotatable around the second axis R2.

FIG. 4 is an exploded perspective view of the gimbal frame receiving member 17. FIG. 4(a) is an exploded perspective view seen from the outside in the radial direction, and FIG. 4(b) is an exploded perspective view seen from the inside in the radial direction. The movable body side connection mechanism 11 has a gimbal frame receiving member 17 that includes a metal sphere 15 and a metal thrust receiving member 16 to which the sphere 15 is fixed, and a concave curved surface 19 that contacts the sphere 15 on the gimbal frame 10. A support section 20 is provided. The gimbal frame receiving member 17 is held by a first holding part 13 provided on the movable body 4. The fixed body side connection mechanism 12 has a gimbal frame receiving member 17 including a metal sphere 15 and a metal thrust receiving member 16 to which the sphere 15 is fixed, and a concave curved surface 19 that contacts the sphere 15 on the gimbal frame 10. A support section 20 is provided. The gimbal frame receiving member 17 is held by a second holding part 14 provided on the fixed body 6. As shown in FIG. 4, the gimbal frame receiving member 17 is held such that the center of the sphere 15 is located on the first axis R1 or the second axis R2.

Here, the gimbal frame receiving member 17 held by the first holding part 13 of the movable body 4 is used as the movable body side gimbal frame receiving member, and the gimbal frame receiving member 17 held by the second holding part 14 of the fixed body 6 is fixed. In the case of using the body side gimbal frame receiving member, the movable body side gimbal frame receiving member and the fixed body side gimbal frame receiving member are the same member, so they will be described with the same reference numeral 17. In addition, in the gimbal frame 10, the support part 20 having a concave curved surface 19 that contacts the gimbal frame receiving member 17 (movable body side gimbal frame receiving member) held by the movable body 4 is used as a movable body side support part and is held on the fixed body 6. When the support part 20 having the concave curved surface 19 that contacts the gimbal frame receiving member 17 (fixed body side gimbal frame receiving member) is used as the fixed body side support part, the movable body side support part and the fixed body side support part have the same configuration. Since it is provided with, the same reference numeral 20 will be given and the explanation will be given.

As shown in FIG. 2, the shake correction magnetic drive mechanism 7 includes a first shake correction magnetic drive mechanism 7X that generates a driving force that rotates the movable body 4 around the X axis, and a first shake correction magnetic drive mechanism 7X that rotates the movable body 4 around the Y axis. A second shake correction magnetic drive mechanism 7Y that generates a driving force for rotation is provided. The first shake correction magnetic drive mechanism 7X is arranged on the -Y direction side of the movable body 4. The second shake correction magnetic drive mechanism 7Y is arranged on the -X direction side of the movable body 4. As shown in FIG. 3, the first shake correction magnetic drive mechanism 7X includes a first magnet 25X and a first coil 26X. The second shake correction magnetic drive mechanism 7Y includes a second magnet 25Y and a second coil 26Y. The first magnet 25X and the first coil 26X of the first shake correction magnetic drive mechanism 7X face each other in the Y-axis direction. The second magnet 25Y and the second coil 26Y of the second shake correction magnetic drive mechanism 7Y face each other in the X-axis direction. In this example, the first magnet 25X and the second magnet 25Y are arranged on the movable body 4, and the first coil 26X and the second coil 26Y are arranged on the fixed body 6. Note that the first magnet 25X and the second magnet 25Y may be arranged on the fixed body 6, and the first coil 26X and the second coil 26Y may be arranged on the movable body 4.

(movable body)
FIG. 5 is a perspective view of the holder, the first magnet 25X, and the second magnet 25Y when viewed from the -Z direction. FIG. 6 is a perspective view of the holder, the first magnet 25X, and the second magnet 25Y viewed from the +Z direction. As shown in FIG. 3, the movable body 4 includes a camera module 3 and a frame-shaped holder 31 surrounding the camera module 3. The camera module 3 includes a main body part 3a having an octagonal shape when viewed from the Z-axis direction, a lens barrel part 3b protruding from the center part of the main body part 3a in the +Z direction, and an end of the main body part 3a in the -Z direction. A substrate 3c disposed in the section. Further, the camera module 3 includes a lens 2 held by a lens barrel portion 3b, and an image sensor (not shown) mounted on a substrate 3c. The image sensor is housed in the main body 3 a and arranged on the optical axis L of the lens 2 . The main body portion 3a includes a plurality of protrusions 30 that protrude toward the outer circumference. The protrusions 30 are formed at two locations each on the side surface in the +Y direction and the end in the -Z direction of the side surface in the -Y direction. A flexible printed circuit board 110 is connected to the board 3c. The flexible printed circuit board 110 is drawn out from the board 3c in the +X direction.

The holder 31 is made of metal. Furthermore, the holder 31 is made of a magnetic material. As shown in FIGS. 5 and 6, the holder 31 includes a holder-side frame plate portion 32 that surrounds the camera module 3 from the outer circumferential side, and a holder-side frame plate portion 32 that is bent from the -Z direction end and protrudes toward the outer circumferential side. A flange portion 33 is provided.

The holder side frame plate portion 32 is a plate-shaped frame whose thickness direction is oriented in the radial direction. As shown in FIGS. 3, 5, and 6, the holder-side frame plate portion 32 has a holder-side first frame plate portion 32 extending in the Y-axis direction along the side surface of the main body portion 3a of the camera module 3 in the −X direction of the camera module 3. A frame plate portion 35 and a holder-side second frame plate portion 36 extending in the Y-axis direction along the side surface of the main body portion 3a in the +X direction of the camera module 3 are provided. Further, the holder side frame plate part 32 includes a holder side third frame plate part 37 extending in the X-axis direction along the side surface of the main body part 3a in the -Y direction of the camera module 3, and a main body part in the +Y direction of the camera module 3. A holder-side fourth frame plate portion 38 is provided that extends in the X-axis direction along the side surface of 3a. In other words, the holder-side frame plate portion 32 includes a holder-side first frame plate portion 35 located between the first axis R1 and the second axis R2 in the circumferential direction, and a holder-side first frame plate portion 35 located between the first axis R1 and the second axis R2 in the circumferential direction, and a holder-side first frame plate portion 35 located between the first axis R1 and the second axis R2 in the circumferential direction. A holder-side second frame plate portion 36 located on the opposite side to the frame plate portion 35 is located on the opposite side of the holder-side first frame plate portion 35 with respect to the first axis R1 in the circumferential direction and is connected to the first axis R1 and the first frame plate portion 36. A third frame plate portion 37 on the holder side located between the second axis R2 and a fourth frame plate portion 38 on the holder side located on the opposite side of the third frame plate portion 37 on the holder side with the optical axis L in between. , is provided.

Further, the holder-side frame plate portion 32 includes a holder-side fifth frame plate portion 39 that connects the holder-side first frame plate portion 35 and the holder-side third frame plate portion 37, and a holder-side fifth frame plate portion 39. It includes a holder-side sixth frame plate portion 40 that connects the holder-side second frame plate portion 36 and the holder-side fourth frame plate portion 38 at diagonal positions in the first axis R1 direction. The holder-side fifth frame plate portion 39 and the holder-side sixth frame plate portion 40 extend in parallel. A holder-side seventh frame plate portion 41 connecting the holder-side first frame plate portion 35 and the holder-side fourth frame plate portion 38, and a diagonal position in the second axis R2 direction with respect to the holder-side seventh frame plate portion 41. It includes a holder-side eighth frame plate portion 42 that connects the holder-side fourth frame plate portion 38 and the holder-side second frame plate portion 36. The holder-side seventh frame plate portion 41 and the holder-side eighth frame plate portion 42 extend in parallel.

Here, the outer end face of the holder-side fifth frame plate portion 39 and the outer end face of the holder-side sixth frame plate portion 40 are the gimbal frame receiving member 17 (movable body-side gimbal frame receiving member) of the movable body-side connection mechanism 11. This is the first holding section 13 that holds the . The gimbal frame receiving member 17 is fixed to the holder-side fifth frame plate portion 39 and the holder-side sixth frame plate portion 40 by welding.

Further, the holder-side second frame plate portion 36 includes a first bent plate portion 36a that projects toward the outer circumferential side midway in the circumferential direction. That is, the holder-side second frame plate portion 36 includes one side portion extending in the Y-axis direction from the holder-side eighth frame plate portion, and one side inclined plate portion extending toward the outer circumferential side from the +Y direction end of the one-side flat plate portion. , a center plate part extending in the Y-axis direction from the +Y direction end of the one side inclined plate part, the other side inclined plate part extending inward from the +Y direction end of the center plate part, and +Y of the other side inclined plate part. and the other side plate portion extending in the Y-axis direction from the end of the direction and continuing to the holder-side sixth frame plate portion. The first bent plate portion 36a includes a one side inclined plate portion, a center plate portion, and an other side plate portion. The end of the first bent plate portion 36a in the -Z direction is closed by a first closing plate 45a which has a trapezoidal shape when viewed from the Z-axis direction.

Further, the holder-side fourth frame plate portion 38 includes a second bent plate portion 38a that projects toward the outer circumferential side midway in the circumferential direction. That is, the holder-side fourth frame plate portion 38 includes one side portion extending in the X-axis direction from the holder-side seventh frame plate portion 41, and one side inclined plate portion extending toward the outer circumferential side from the +X direction end of the one-side flat plate portion. , a center plate part extending in the X-axis direction from the +X direction end of the one side inclined plate part, the other side inclined plate part extending inward from the +X direction end of the center plate part, and the other side inclined plate part. The other side plate portion extends from the end in the +X direction in the X-axis direction and is continuous with the holder-side sixth frame plate portion. The second bent plate portion 38a includes an inclined plate portion on one side, a center plate portion, and a plate portion on the other side. The end of the second bent plate portion 38a in the −Z direction is closed by a second closing plate 45b having a trapezoidal shape when viewed from the Z-axis direction.

Further, the holder-side frame plate portion 32 includes a positioning recess 43 formed by cutting out the −Z-direction edges of the holder-side third frame plate portion 37 and the holder-side fourth frame plate portion 38 in the +Z direction. When assembling the movable body 4, the camera module 3 is inserted into the inside of the holder 31 from the -Z direction (image side). At this time, the protrusion 30 of the camera module 3 is inserted into the positioning recess 43 of the holder 31, and the protrusion 30 abuts the edge of the positioning recess in the +Z direction. Thereby, the camera module 3 is positioned with respect to the holder 31 in the Z-axis direction (optical axis L direction). Further, the holder-side frame plate portion 32 includes a notch recess 44 that is formed by cutting the −Z-direction edge of the holder-side second frame plate portion 36 in the +Z direction. The cutout recess 44 is provided to avoid interference between the flexible printed circuit board 110 pulled out from the camera module 3 and the holder 31.

Next, the flange portion 33 is provided at a position avoiding the positioning recess 43 and the notch recess 44 at the end of the holder side frame plate portion 32 in the −Z direction. Therefore, the flange portion 33 includes a first frame plate portion flange portion 33a bent from the first frame plate portion 35 on the holder side, a second frame plate portion flange portion 33b bent from the second frame plate portion 36 on the holder side, and a second frame plate portion flange portion 33b bent from the second frame plate portion 36 on the holder side. A third frame plate portion flange portion 33c is bent from the third frame plate portion 37, and a fourth frame plate portion flange portion 33d is bent from the fourth frame plate portion 38 on the holder side. Further, the flange portion 33 includes a fifth frame plate portion flange portion 33e bent from the holder side fifth frame plate portion 39, a sixth frame plate portion flange portion 33f bent from the holder side sixth frame plate portion 40, and a holder side third frame plate portion flange portion 33e bent from the holder side fifth frame plate portion 39. A seventh frame plate portion flange portion 33g bent from the seventh frame plate portion 41 and an eighth frame plate portion flange portion 33h bent from the holder-side eighth frame plate portion 42 are provided. The fifth frame plate portion flange portion 33e protrudes toward the outer circumferential side from the entire area of the −Z direction end of the holder-side fifth frame plate portion 39. The sixth frame plate portion flange portion 33f protrudes toward the outer circumferential side from the entire area of the −Z direction end of the holder-side sixth frame plate portion 40. The seventh frame plate portion flange portion 33g protrudes toward the outer circumferential side from the entire area of the −Z direction end of the holder-side seventh frame plate portion 41. The eighth frame plate portion flange portion 33h protrudes toward the outer circumferential side from the entire area of the −Z direction end of the holder-side eighth frame plate portion 42.

The first protrusion amount by which the first frame plate part flange part 33a and the third frame plate part flange part 33c protrude toward the outer circumference is as follows: the second frame plate part flange part 33b, the fourth frame plate part flange part 33d, The amount by which the frame plate portion flange portion 33e, the sixth frame plate portion flange portion 33f, the seventh frame plate portion flange portion 33g, and the eighth frame plate portion flange portion 33h protrude toward the outer circumference is larger than the second protrusion amount. Further, the end faces of the first frame plate part flange part 33a and the third frame plate part flange part 33c in the -Z direction are planes perpendicular to the optical axis L. Here, the first frame plate portion flange portion 33a, the second frame plate portion flange portion 33b, the third frame plate portion flange portion 33c, the fourth frame plate portion flange portion 33d, the fifth frame plate portion flange portion 33e, and the sixth frame plate portion flange portion 33e. The ends of the frame plate portion flange portion 33f, the seventh frame plate portion flange portion 33g, and the eighth frame plate portion flange portion 33h in the −Z direction are located on one vertical plane perpendicular to the optical axis L.

The second magnet 25Y of the second shake correction magnetic drive mechanism 7Y is fixed to the outer surface of the first frame plate portion 35 on the holder side. The first magnet 25X is fixed to the outer surface of the third frame plate portion 37 on the holder side. The holder 31 is made of a magnetic material and functions as a yoke for the first magnet 25X and the second magnet 25Y. The first magnet 25X and the second magnet 25Y are magnetized such that the magnetic poles of the surfaces facing outward in the radial direction are different from each other with respect to a magnetized polarization line extending circumferentially from the center in the Z-axis direction.

Here, the second magnet 25Y contacts the first frame plate portion flange portion 33a bent from the holder-side first frame plate portion 35 from the +Z direction. Further, the first magnet 25X contacts the third frame plate portion flange portion 33c bent from the holder-side third frame plate portion 37 from the +Z direction. Thereby, the second magnet 25Y and the first magnet 25X are placed in the holder 3 while being positioned in the Z-axis direction.
Fixed to 1. Further, the holder 31 is made of metal, and the holder side frame plate portion 32 is formed by deep drawing or the like. Therefore, the flange portion 33 can be easily provided in the process of forming the holder side frame plate portion 32.

(fixed body)
FIG. 7 is a perspective view of the case, the first coil 26X, and the second coil 26Y viewed from the +Z direction. FIG. 8 is a perspective view of the case, the first coil 26X, and the second coil 26Y as viewed from the -Z direction. As shown in FIGS. 1 and 3, the fixed body 6 includes a frame-shaped case 50, a first cover 8 that covers the case 50 from the +Z direction side, and a base that covers the case 50 from the -Z direction side. 9. The fixed body 6 holds a first coil 26X and a second coil 26Y fixed to the flexible printed circuit board 60. The case 50 has a rectangular frame shape that surrounds the outer peripheral side of the movable body 4 from the outside in the radial direction. The case 50 is a flat plate member made of metal. The first cover 8, the case 50, and the base 9 are made of metal and made of non-magnetic material. That is, the first cover 8, case 50, and base 9 are made of nonmagnetic metal. The base 9 is a flat plate member. Case 50, first cover 8, and base 9 are fixed to each other by welding. The first cover 8 includes a substantially rectangular opening. As shown in FIG. 1, in the optical unit with shake correction function 1, a part of the gimbal frame 10 protrudes from the opening of the first cover 8 in the +Z direction. Further, as shown in FIG. 2, the lens barrel portion 3b of the camera module 3 protrudes in the +Z direction from a central hole 73 provided at the radial center of the gimbal frame 10.

As shown in FIGS. 7 and 8, the case 50 includes a fixed body side frame plate portion 46 that surrounds the holder 31 from the outside in the radial direction, and a fixed body side frame plate portion 46 that is bent from the -Z direction end and protrudes toward the outer peripheral side. A fixed body side flange portion 47 is provided. The fixed body side frame plate portion 46 is a plate-shaped frame whose thickness direction is oriented in the radial direction.

The fixed body side frame plate portion 46 includes a first frame plate portion 51 on the fixed body side extending in the Y-axis direction in the −X direction of the movable body 4, and a second frame plate portion 52 on the fixed body side extending in the Y-axis direction in the +X direction of the movable body 4. , a fixed body-side third frame plate portion 53 extending in the X-axis direction in the −Y direction of the movable body 4, and a fixed body-side fourth frame plate portion 54 extending in the +Y direction of the movable body 4 in the X-axis direction. In the fixed body side frame plate part 46, the space between the fixed body side first frame plate part 51 and the fixed body side fourth frame plate part 54 is They are connected by a fifth frame plate portion 55 on the fixed body side that is inclined at 45 degrees. Moreover, between the fixed body side second frame plate part 52 and the fixed body side third frame plate part 53, the fixed body side is inclined at 45 degrees with respect to the fixed body side second frame plate part 52 and the fixed body side third frame plate part 53. They are connected by a sixth frame plate portion 56. The fifth frame plate portion 55 on the fixed body side and the sixth frame plate portion 56 on the fixed body side face each other in the second axis R2 direction. Further, the first frame plate portion 51 on the fixed body side and the third frame plate portion 53 on the fixed body side are connected by a seventh frame plate portion 57 on the fixed body side that extends outward in the first axis R1 direction. In other words, the first frame plate portion 51 on the fixed body side is offset in the +X direction from the seventh frame plate portion 57 on the fixed body side. The third frame plate portion 53 on the fixed body side is offset in the +Y direction from the seventh frame plate portion 57 on the fixed body side. When viewed from the Z-axis direction, the fixed body side seventh frame plate portion 57 projects the first axis R1 direction toward the outer circumferential side, then extends in the circumferential direction, and bends the first axis R1 direction toward the inner circumferential side. It has a bent shape.

Here, the outer end face of the fifth frame plate portion 55 on the fixed body side and the outer end face of the sixth frame plate portion 56 on the fixed body side are the gimbal frame receiving member 17 (fixed body side gimbal frame receiving member) of the fixed body side connection mechanism 12. This is the second holding part 14 for holding the. The gimbal frame receiving member 17 is fixed to the fifth frame plate portion 55 on the fixed body side and the sixth frame plate portion 56 on the fixed body side by welding.

As shown in FIG. 7, the second coil 26Y of the second shake correction magnetic drive mechanism 7Y is fixed to the surface of the first frame plate portion 51 on the fixed body side opposite to the movable body 4. As shown in FIG. 8, the first coil 26X of the first shake correction magnetic drive mechanism 7X is fixed to the surface of the third frame plate portion 53 on the fixed body side opposite to the movable body 4. The first coil 26X and the second coil 26Y are air-core coils, and the two long sides located in the +Z direction and the -Z direction are used as effective sides. As shown in FIG. 3, a flexible printed circuit board 60 is fixed to the radially outer side of the first frame plate portion 51 on the fixed body side and the third frame plate portion 53 on the fixed body side. The flexible printed circuit board 60 includes a first board portion 61 that overlaps the third frame plate portion 53 on the fixed body side from the outside in the radial direction, and a second board portion that overlaps the first frame plate portion 51 on the fixed body side from the outside in the radial direction. 62. The first coil 26X is fixed to the first substrate portion 61, and the second coil 26Y is fixed to the second substrate portion 62. The first coil 26X and the second coil 26Y are electrically connected to the flexible printed circuit board 60.

A rectangular magnetic plate 64 is arranged on the first substrate portion 61 and the second substrate portion 62, respectively. The magnetic plate 64 disposed on the first substrate portion 61 faces the first magnet 25X, and constitutes a magnetic spring for returning the movable body 4 to the reference rotational position in the rotational direction around the X-axis. Further, the magnetic plate 64 disposed on the second substrate portion 62 faces the second magnet 25Y, and constitutes a magnetic spring for returning the movable body 4 to the reference rotational position in the rotational direction around the Y-axis. . Further, a magnetic sensor 65 is arranged at a position overlapping the center holes of the first coil 26X and the second coil 26Y. The magnetic sensor 65 is, for example, a Hall element. The optical unit with shake correction function 1 detects the swing angle of the movable body 4 around the X-axis from the output of the magnetic sensor 65 arranged at the center of the first coil 26X. Further, the swing angle of the movable body 4 around the Y-axis is detected from the output of the magnetic sensor 65 arranged at the center of the second coil 26Y.

As shown in FIGS. 7 and 8, a board passage hole 59 is provided in the second frame plate portion 52 on the fixed body side. The board passage hole 59 is a rectangular notch extending from the −Z direction to the +Z direction in the second frame plate portion 52 on the fixed body side. The flexible printed circuit board pulled out in the +X direction from the camera module 3 is pulled out to the outside of the case 50 through the board passage hole 59.

Next, the fixed body side flange portion 47 is provided at the end of the fixed body side frame plate portion 46 in the −Z direction. That is, the fixed body side flange portion 47 excludes the substrate passing hole 59 in the first frame plate portion flange portion 47a bent from the -Z direction end of the fixed body side first frame plate portion 51 and the fixed body side second frame plate portion 52. The second frame plate part flange part 47b bends from the -Z direction end of the third frame plate part 53 on the fixed body side, the third frame plate part flange part 47c bends from the -Z direction end of the third frame plate part 53 on the fixed body side, and the fourth frame on the fixed body side. A fourth frame plate portion flange portion 47d is provided which is bent from the end of the plate portion 54 in the −Z direction. Further, the fixed body side flange portion 47 is bent from the -Z direction end of the fifth frame plate part 55 on the fixed body side, and the fifth frame plate part flange part 47e bent from the -Z direction end of the fixed body side sixth frame plate part 56. A sixth frame plate portion flange portion 47f is bent, and a seventh frame plate portion flange portion 47g is bent from the −Z direction end of the seventh frame plate portion 57 on the fixed body side. The base 9 is fixed to the end face of the fixed body side flange portion 47 in the −Z direction. The base 9 is fixed to the end face of the fixed body side flange portion 47 in the −Z direction.

(Gimbal frame)
As shown in FIGS. 2 and 3, the gimbal frame 10 includes a gimbal frame main body 70 that is approximately square when viewed from the Z-axis direction, and a radially outer side from a diagonal position in the first axis R1 direction of the gimbal frame main body 70. The first gimbal frame extension part 71 is bent in the -Z direction and extends in the Z-axis direction, and the first gimbal frame extension part 71 is bent in the -Z direction and extends in the -Z direction from a diagonal position in the second axis R2 direction on the gimbal frame main body part 70 toward the outside in the radial direction. A second gimbal frame extending portion 72 is bent to extend in the Z-axis direction. A central hole 73 passing through the gimbal frame body 70 is provided at the center of the gimbal frame body 70 . As shown in FIG. 2, the gimbal frame main body 70 overlaps the main body 3a of the camera module 3 when viewed from the Z-axis direction.

FIG. 9A is a side view of the gimbal frame 10, viewed from the direction of the first axis R1. FIG. 9(b) is a side view of the gimbal frame 10 and the gimbal frame receiving member 17, as viewed from the second axis R2 direction. As shown in FIGS. 3 and 9, the gimbal frame main body 70 includes a rectangular center plate portion 75 extending in the first axis R1 direction at the center in the second axis R2 direction, and a rectangular center plate portion 75 extending in the first axis R1 direction from the center plate portion 75 to the second axis R2. A pair of trapezoidal corner plate portions 76 are provided that are inclined in the +Z direction toward both sides of the direction. In the gimbal frame main body 70, the square plate portion 76 in the second axis R2 direction is further away from the movable body 4 than the center plate portion 75. Therefore, even if the movable body 4 rotates around the first axis R1 on the -Z direction side of the gimbal frame 10 and both ends of the movable body 4 in the second axis R2 direction move in the Z-axis direction, the movable body 4 and Collision with the gimbal frame 10 can be avoided.

As shown in FIGS. 3 and 9, the first gimbal frame extension part 71 is a first gimbal frame extension part 71 that is inclined in the -Z direction from the center plate part 75 of the gimbal frame main body part 70 toward the first axis R1 direction. A first extending portion 81 of the first gimbal frame extending portion 81 and a second extending portion 82 of the first gimbal frame extending portion extending in the Z-axis direction in the −Z direction of the first extending portion 81 of the first gimbal frame extending portion. The first gimbal frame extension part 71 includes a support part 20 (movable body side support part) that constitutes the movable body side connection mechanism 11 at the -Z direction tip of the first gimbal frame extension part second extension part 82. . The support portion 20 includes a concave curved surface 19 that is recessed radially inward at the circumferentially central portion of the radially outer end surface.

The support portion 20 (movable body side support portion) provided at the tip of the first gimbal frame extension portion 71 includes a convex portion 21 that protrudes inward in the radial direction at the center portion in the circumferential direction. The convex portion 21 is formed on the first gimbal frame extension portion second extension portion 82 by press working. The concave curved surface 19 is formed on the convex portion 21 . Further, a convex curved surface 18 is formed on the convex portion 21 on the opposite side to the concave curved surface 19. Further, the support portion 20 (movable body side support portion) includes an edge portion 22 extending from the convex portion 21 to both sides in the circumferential direction. The edge portions 22 are formed concentrically around the convex portion 21 on both sides of the convex portion 21 in the circumferential direction. Here, the concave curved surface 19 has a radius of curvature larger than that of the sphere 15 that constitutes the movable body side connection mechanism 11 . Further, the first gimbal frame extension part second extension part 82 includes a passage part 84 in the +Z direction of the support part 20 whose width in the circumferential direction is narrower than that of the support part 20 .

As shown in FIGS. 3 and 9, the second gimbal frame extension portion 72 has a second gimbal frame extension portion 72 extending from each of the pair of square plate portions 76 of the gimbal frame main body portion 70 toward the second axis R2 direction, which is inclined in the −Z direction. 2 gimbal frame extension part first extension part 85 and a second gimbal frame extension part second extension part extending in the Z-axis direction from the -Z direction end of the second gimbal frame extension part first extension part 85 portion 86. The second gimbal frame extension section 72 includes a support section 20 (fixation body side support section) that constitutes the fixed body side connection mechanism 12 at the tip of the second extension section of the second gimbal frame extension section 72 in the first direction. . The support portion 20 includes a concave curved surface 19 that is recessed radially inward at the circumferentially central portion of the radially outer end surface.

The support part 20 (fixed body side support part) provided at the tip of the second gimbal frame extension part 72 is the same as the support part 20 (movable body side support part) provided at the tip of the first gimbal frame extension part 71. It is the shape. That is, at the tip of the second gimbal frame extending portion 72, the support portion 20 (fixed body side support portion) includes a convex portion 21 that protrudes inward in the radial direction at the center portion in the circumferential direction. The convex portion 21 is formed on the second gimbal frame extension portion 86 by press working. The concave curved surface 19 is formed on the convex portion 21 . Further, a convex curved surface 18 is formed on the convex portion 21 on the opposite side to the concave curved surface 19. Further, the support portion 20 (movable body side support portion) includes an edge portion 22 extending from the convex portion 21 to both sides in the circumferential direction. The edge portions 22 are formed concentrically around the convex portion 21 on both sides of the convex portion 21 in the circumferential direction. The radius of curvature of the concave curved surface 19 is larger than the radius of curvature of the sphere 15 that constitutes the fixed body side connection mechanism 12 . Further, the second gimbal frame extension portion 86 includes a passage portion 84 in the +Z direction of the support portion 20, the width of which is narrower in the circumferential direction than the support portion 20.

Here, the support part 20 (movable body side support part) of each first gimbal frame extension part 71 is attached to the gimbal frame receiving member 17 (movable body side gimbal frame support part) held by each first holding part 13 of the movable body 4. The sphere 15 of the member) comes into contact. As a result, as shown in FIG. 2, a movable body-side connection mechanism 11 is configured that rotatably connects the gimbal frame 10 and the movable body 4 about the first axis R1. More specifically, the first holding portion 13 of the movable body 4 holds the gimbal frame receiving member 17 (movable body side gimbal frame receiving member) at a position where the first axis R1 passes through the center of the sphere 15. The sphere 15 is partially inserted into the concave curved surface 19 of the support section 20 of the first gimbal frame extension section 71 from the direction of the first axis R1. As a result, the concave curved surface 19 and the spherical body 15 come into point contact on the first axis R1 line, so the movable body 4 and the gimbal frame 10 are connected in a rotatable state around the first axis R1 line. .

Further, the spherical body 15 of the gimbal frame receiving member 17 held by the second holding portion 14 of the fixed body 6 comes into contact with the support portion 20 (fixed body side support portion) of the second gimbal frame extension portion 72 . Thereby, as shown in FIG. 2, the gimbal frame 10 and the fixed body 6 are rotatably connected around the second axis R2. A fixed body side connection mechanism 12 is configured. More specifically, the second holding portion 14 of the fixed body 6 holds the gimbal frame receiving member 17 (fixed body side gimbal frame receiving member) at a position where the second axis R2 passes through the center of the sphere 15. The sphere 15 is partially inserted into the concave curved surface 19 of the support section 20 of the second gimbal frame extension section 72 from the direction of the second axis R2. As a result, the concave curved surface 19 and the spherical body 15 come into contact at a point on the second axis R2 line, so the fixed body 6 and the gimbal frame 10 are connected in a rotatable state around the second axis R2 line. Ru.

(Assembling optical unit with shake correction function)
When assembling the optical unit 1 with shake correction function, the pair of gimbal frame receiving members 17 (movable body side gimbal frame receiving members) of the movable body side connection mechanism 11 are connected to the pair of first gimbal frame receiving members 17 (movable body side gimbal frame receiving members) The concave curved surface 19 of the support portion 20 of the gimbal frame extension portion 71 is brought into contact with the sphere 15. In this state, as shown in FIG. 5, the two gimbal frame receiving members 17 (movable body side gimbal frame receiving members) are connected to the outer peripheral side end surface of the holder side fifth frame plate portion 39 and the holder side sixth frame plate portion 39, respectively. It is fixed to the end surface on the outer peripheral side of the portion 40. Specifically, the pair of arm portions 94 and foot portions 92 of the thrust receiving member 16 of one gimbal frame receiving member 17 are welded to the end surface on the outer peripheral side of the fifth frame plate portion 39 on the holder side. Further, the pair of arm portions 94 and leg portions 92 of the thrust receiving member 16 of the other gimbal frame receiving member 17 are welded to the end surface on the outer peripheral side of the sixth frame plate portion 40 on the holder side.

Here, when fixing each gimbal frame receiving member 17 to which the first gimbal frame extension part 71 is connected to a diagonal position of the holder 31 in the first axis R1 direction, the first gimbal frame extension part 71 is They are configured to bend toward the inner circumferential side of each other. As a result, the first gimbal frame extending portion 71 is biased toward the outer circumferential side, so that a biasing force from the first gimbal frame extending portion 71 acts on the gimbal frame receiving member 17 via the sphere 15 .

Furthermore, when assembling the optical unit 1 with shake correction function, the pair of gimbal frame receiving members 17 (fixed body side gimbal frame receiving members) of the fixed body side connection mechanism 12 are connected to the second gimbal frame receiving member 17 as shown in FIG. The concave curved surface 19 of the support portion 20 of the gimbal frame extension portion 72 is brought into contact with the sphere 15. In this state, as shown in FIG. 7, the two gimbal frame receiving members 17 (movable body side gimbal frame receiving members) are attached to the outer peripheral side end surface of the fixed body side fifth frame plate portion 55 and the fixed body side sixth frame plate portion. It is fixed to the end surface on the outer peripheral side of the portion 56. Specifically, the pair of arm portions 94 and leg portions 92 of the thrust receiving member 16 of one gimbal frame receiving member 17 are welded to the end surface on the outer peripheral side of the fifth frame plate portion 55 on the fixed body side. Further, the pair of arm portions 94 and leg portions 92 of the thrust receiving member 16 of the other gimbal frame receiving member 17 are welded to the end surface on the outer peripheral side of the sixth frame plate portion 56 on the fixed body side.

Here, when fixing each gimbal frame receiving member 17 to which the second gimbal frame extension part 72 is connected to a diagonal position in the second axis R2 direction of the fixed body side frame plate part 46, the second gimbal frame extension part 72 is fixed. The mounting portions 72 are configured to bend toward the inner circumferential side of each other. As a result, a biasing force that biases the second gimbal frame extension portion 72 toward the outer circumferential side acts on the gimbal frame receiving member 17 (fixed side gimbal frame receiving member).

When the movable body side connection mechanism 11 and the fixed body side connection mechanism 12 are configured, the movable body 4 can swing around the intersection P where the optical axis L, the first axis R1, and the second axis R2 intersect ( (See Figure 10). The intersection point P is located radially inside the first magnet 25X and the second magnet 25Y. Further, the intersection point P is located on the radially inner side of the first coil 26X and the second coil 26Y. Further, the first magnet 25X and the first coil 26X of the first shake correction magnetic drive mechanism 7X face each other in the Y-axis direction with the fixed body side first frame plate portion 51 sandwiched therebetween. The second magnet 25Y and the second coil 26Y of the second shake correction magnetic drive mechanism 7Y face each other in the X-axis direction with the fixed body side third frame plate portion 53 sandwiched therebetween. In this example, the first magnet 25X, the second magnet 25Y, the first coil 26X, and the second coil 26Y overlap the virtual plane S that includes the first axis R1 and the second axis R2. The virtual plane S is a plane that passes through the intersection P and is perpendicular to the optical axis L.

(Stopper mechanism)
FIG. 10 is a sectional view taken along the line AA in FIG. 2, and is an explanatory diagram of the first stopper mechanism and the second stopper mechanism. Here, if an external impact is applied to the optical device in which the optical unit 1 with shake correction function is installed, the impact is also applied to the optical unit 1 with shake correction function. When an impact is applied to the optical unit 1 with a shake correction function, the movable body 4 moves in the radial direction perpendicular to the optical axis L, and the parts held by the movable body 4 collide with the parts held by the fixed body. Sometimes. For example, if the first magnet 25X and the first coil 26X, or the second magnet 25Y and the second coil 26Y, which face each other in the radial direction, collide, the first coil 26X and the second coil 26Y will be damaged, causing wire breakage, etc. There is a problem with doing so. Further, if the movable body 4 moves excessively in the radial direction, there is a possibility that plastic deformation will occur in the gimbal frame 10 that supports the movable body 4. To solve this problem, the optical unit 1 with a shake correction function includes a first stopper mechanism 111 between the movable body 4 and the fixed body, which restricts the range of movement of the movable body 4 in the radial direction.

Further, when an impact is applied to the optical unit 1 with a shake correction function, the movable body 4 may move excessively in the -Z direction. If the movable body 4 moves excessively in the −Z direction, the gimbal frame 10 that supports the movable body 4 may be plastically deformed. To solve this problem, the optical unit 1 with a shake correction function includes a second stopper mechanism 112 between the movable body 4 and the fixed body to restrict the movement range of the movable body 4 in the −Z direction.

(First stopper mechanism)
As shown in FIGS. 2 and 10, the first stopper mechanism 111 includes a first frame plate portion 51 on the fixed body side of the case 50 and a second magnet 25Y. The fixed body side first frame plate portion 51 and the second magnet 25Y face each other with a predetermined gap in the X-axis direction. Further, the first stopper mechanism 111 includes a third frame plate portion 53 on the fixed body side of the case 50 and a first magnet 25X. The third frame plate portion 53 on the fixed body side and the first magnet 25X face each other with a predetermined gap in the Y-axis direction. Further, the first stopper mechanism 111 includes a first bent plate portion 36a provided on the second frame plate portion 36 on the holder side, and a second frame plate portion 52 on the fixed body side. The first bent plate portion 36a and the second frame plate portion 52 on the fixed body side face each other with a predetermined gap in the X-axis direction. The first stopper mechanism 111 also includes a second bent plate portion 38a provided on the fourth frame plate portion 38 on the holder side, and a fourth frame plate portion 54 on the fixed body side of the holder 31. The second bent plate portion 38a and the fourth frame plate portion 54 on the fixed body side face each other with a predetermined gap in the Y-axis direction.

That is, when the movable body 4 moves in the -X direction due to an impact or the like, the first frame plate portion 51 on the fixed body side comes into contact with the second magnet 25Y, and the movable body 4 moves further in the -X direction. prevent it from moving. Here, the second coil 26Y forming a pair with the second magnet 25Y is fixed to the surface of the first frame plate portion 51 on the fixed body side opposite to the movable body 4. Therefore, the second magnet 25Y mounted on the holder 31 and the second coil 26Y mounted on the fixed body 6 do not collide. Further, when the movable body 4 moves in the +X direction due to an impact or the like, the first bent plate portion 36a provided on the second frame plate portion 36 on the holder side and the second frame plate portion 52 on the fixed body side come into contact with each other. This prevents the movable body 4 from moving further in the +X direction. Therefore, it is possible to prevent the gimbal frame 10 and the like from being plastically deformed due to excessive movement of the movable body 4.

Further, when the movable body 4 moves in the -Y direction due to an impact, etc., the third frame plate portion 53 on the fixed body side and the first magnet 25X come into contact, and the movable body 4 moves further in the -Y direction. prevent it from moving. Here, the first coil 26X forming a pair with the first magnet 25X is fixed to the surface of the fixed body side third frame plate portion 53 on the opposite side to the movable body 4. Therefore, the first magnet 25X mounted on the holder 31 and the first coil 26X mounted on the fixed body 6 do not collide. Further, when the movable body 4 moves in the +Y direction due to an impact or the like, the second bent plate portion 38a provided on the fourth frame plate portion 38 on the holder side comes into contact with the fourth frame plate portion 54 on the fixed body side. This prevents the movable body 4 from moving further in the +Y direction. Therefore, it is possible to prevent the gimbal frame 10 and the like from being plastically deformed due to excessive movement of the movable body 4.

(Second stopper mechanism)
The second stopper mechanism 112 includes a flange portion 33 provided on the holder 31 of the movable body 4, and a facing portion 117 that faces the flange portion 33 in the Z-axis direction on the base 9 of the fixed body 6. As shown in FIG. 10, the opposing portion 117 is a surface portion of the +Z direction surface of the base 9 located on the inner peripheral side of the fixed body side flange portion 47 of the case 50. As shown in FIG. The flange portion 33 and the opposing portion 117 face each other with a predetermined gap in the Z-axis direction.

Here, if the movable body 4 moves in the -Z direction due to an impact or the like, the flange portion 33 provided on the holder 31 of the movable body 4 and the opposing portion 117 of the base 9 come into contact in the Z-axis direction. This prevents the movable body 4 from moving further in the −Z direction. In particular, as shown in FIG. 5, in the first frame plate part flange part 33a and the third frame plate part flange part 33c, which have a large amount of protrusion toward the outer periphery, their end surfaces on the opposite side to the subject face each other over a relatively wide area. The movable member 4 comes into contact with the portion 117 and prevents the movable body 4 from moving in the -Z direction. Therefore, it is possible to prevent plastic deformation from occurring in the gimbal frame 10 that supports the movable body 4.

(effect)
In this example, the first coil 26X and the second coil 26Y are fixed to the radially outer surface of the fixed body side frame plate portion 46 of the case 50. Therefore, when the movable body 4 moves in the radial direction, the first coil 26X and the first magnet 25X, or the second coil 26Y and the second magnet 25Y do not collide. Therefore, even if the movable body 4 moves excessively in the radial direction due to an external impact, it is possible to prevent the first coil 26X and the second coil 26Y from being damaged.

Further, when the first stopper mechanism 111 restricts the radial movement range of the movable body 4, the metal fixed body side frame plate portion 46 and the first magnet 25X or the second magnet 25Y come into contact. Therefore, even if the fixed body side frame plate portion 46 and the first magnet 25X and the second magnet 25Y repeatedly come into contact with each other, the finer The generation of dust can be suppressed.

Furthermore, since the fixed body side frame plate part 46 is made of metal, the thickness of the fixed body side frame plate part 46 in the radial direction can be made thinner than when the fixed body side frame plate part 46 is made of resin. Therefore, even when the fixed body side frame plate part 46 is disposed between the first coil 26X and the first magnet 25X, the first coil 26X and the first magnet 25X can be brought close to each other. Moreover, even when the fixed body side frame plate part 46 is arranged between the second coil 26Y and the second magnet 25Y, the second coil 26Y and the second magnet 25Y can be brought close to each other. Therefore, the shake correction magnetic drive mechanism 7 can exert a driving force for driving the movable body 4.

Furthermore, since the fixed body side frame plate portion 46 is made of metal, the thickness in the radial direction can be reduced. Therefore, it is possible to suppress the optical unit with a shake correction function from increasing in size in the radial direction.

Further, the holder 31 of the movable body 4 is made of magnetic metal, and the first magnet 25X and the second magnet 25Y are fixed to the holder 31. Therefore, the holder 31 can function as a yoke for the first magnet 25X and the second magnet 25Y.

Further, the fixed body 6 includes a fixed body side flange portion 47 that is bent from one end of the fixed body side frame plate portion 46 in the Z-axis direction and extends toward the outer circumferential side. The fixed body side flange portion 47 includes a first frame plate portion flange portion 47a bent from the fixed body side first frame plate portion 51, and a third frame plate portion flange portion 47c bent from the fixed body side third frame plate portion 53. Be prepared. Since such a fixed body side flange portion 47 is provided, even when the thickness of the fixed body side frame plate portion 46 in the radial direction is reduced, the fixed body side frame plate portion 46 that holds the first coil 26X and the second coil 26Y is bent. can be suppressed.

Furthermore, the holder 31 has a first bent plate part 36a on the holder side second frame plate part 36, which protrudes toward the outer circumferential side midway in the circumferential direction and faces the fixed body side second frame plate part 52 with a predetermined gap. Be prepared. The holder 31 also has a second bending plate part 38a on the holder-side fourth frame plate part 38, which protrudes toward the outer circumferential side midway in the circumferential direction and faces the fixed body-side fourth frame plate part 54 with a predetermined gap. Be prepared. The first bent plate part 36a and the second bent plate part 38a constitute the first stopper mechanism 111 together with the fixed body side frame plate part 46. Therefore, according to the first stopper mechanism 111 of this example, the movement range of the movable body 4 can be restricted in four directions around the optical axis.

DESCRIPTION OF SYMBOLS 1... Optical unit with shake correction function, 2... Lens, 3... Camera module, 3a... Main body part, 3b... Lens barrel part, 3c... Substrate, 4... Movable body, 5... Gimbal mechanism, 6... Fixed body, 7... Magnetic drive mechanism for correction, 7X... First magnetic drive mechanism for shake correction, 7Y... Second magnetic drive mechanism for shake correction, 8... First cover, 9... Base, 10... Gimbal frame, 11... Movable body side connection mechanism, 12... Fixed body side connection mechanism, 13... First holding part, 14... Second holding part, 15... Sphere, 16... Thrust receiving member, 17... Gimbal frame receiving member, 18... Convex curved surface, 19... Concave curved surface, 20... Support part, 21...Convex part, 22...Edge, 25X...First magnet, 25Y...Second magnet, 26X...First coil, 26Y...Second coil, 30...Protrusion part, 31...Holder, 32...Holder side Frame plate part, 33...Flange part, 33a...First frame plate part flange part, 33b...Second frame plate part flange part, 33c...Third frame plate part flange part, 33d...Fourth frame plate part flange part, 33e ...Fifth frame plate part flange part, 33f...Sixth frame plate part flange part, 33g...Seventh frame plate part flange part, 33h...Eighth frame plate part flange part, 35...Holder side first frame plate part, 36 ... Holder side second frame plate part, 36a... First bending plate part, 37... Holder side third frame plate part, 38... Holder side fourth frame plate part, 38a... Second bending plate part, 39... Holder side third frame plate part. 5 frame plate portion, 40... holder side sixth frame plate portion, 41... holder side seventh frame plate portion, 42... holder side eighth frame plate portion, 43... positioning recess, 44... notch recess, 45a... first Closing plate, 45b...Second sealing plate, 46...Fixed body side frame plate part, 47...Fixed body side flange part, 47a...First frame plate part flange part, 47b...Second frame plate part flange part, 47c...Third frame Plate portion flange portion, 47d...Fourth frame plate portion flange portion, 47e...Fifth frame plate portion flange portion, 47f...Sixth frame plate portion flange portion, 47g...Seventh frame plate portion flange portion, 50...Case, 51 ...First frame plate part on the fixed body side, 52...Second frame plate part on the fixed body side, 53...Third frame plate part on the fixed body side, 54...Fourth frame plate part on the fixed body side, 55...Fifth frame plate part on the fixed body side, 56 ...Sixth frame plate part on the fixed body side, 57... Seventh frame plate part on the fixed body side, 59... Board passage hole, 60... Flexible printed circuit board, 61... First board part, 62... Second board part, 64... Magnetic plate, 65... Magnetic sensor, 70... Gimbal frame main body part, 71... First gimbal frame extension part, 72... Second gimbal frame extension part, 73... Center hole, 75... Center plate part, 76... Square plate part, 81 ...First gimbal frame extension part first extension part, 82...First gimbal frame extension part second extension part, 84... Passing part, 85... Second gimbal frame extension part first extension part, 86 ...Second gimbal frame extension part second extension part, 92...leg part, 94...arm part, 110...flexible printed circuit board, 111...first stopper mechanism, 112...second stopper mechanism, 117...opposing part, R1 ...1st axis, R2...2nd axis

Claims (5)

a movable body including a camera module;
a gimbal mechanism that rotatably supports the movable body around a first axis intersecting the optical axis of the camera module and around a second axis intersecting the optical axis and the first axis;
a fixed body that supports the movable body via the gimbal mechanism;
a shake correction magnetic drive mechanism that rotates the movable body around the first axis and the second axis;
a stopper mechanism that restricts a movement range in which the movable body moves in a radial direction perpendicular to the optical axis;
The fixed body has a fixed body side frame plate portion that surrounds the movable body from the outside in the radial direction,
The shake correction magnetic drive mechanism includes a coil fixed to the fixed body side frame plate portion and a magnet fixed to the movable body,
The fixed body side frame plate portion is made of non-magnetic metal,
The coil is fixed to a surface of the fixed body side frame plate portion opposite to the movable body,
The magnet faces the fixed body side frame plate part with a predetermined gap, and faces the coil via the fixed body side frame plate part,
An optical unit with a shake correction function, wherein the stopper mechanism includes the fixed body side frame plate portion and the magnet. The movable body includes a holder that surrounds the camera module from an outer peripheral side,
The holder is made of magnetic metal,
The optical unit with a shake correction function according to claim 1, wherein the magnet is fixed to the holder. The shake correction magnetic drive mechanism includes a first shake correction magnetic drive mechanism provided between the first axis and the second axis in a circumferential direction around the optical axis; a second shake correction magnetic drive mechanism provided between the first shaft and the second axis on the opposite side of the shaft from the first shake correction magnetic drive mechanism;
The coils include a first coil of the first shake correction magnetic drive mechanism fixed to the outer surface of the fixed body side frame plate portion, and a second shake correction coil fixed to the outer surface of the fixed body side frame plate portion. a second coil of a magnetic drive mechanism for
The magnets include a first magnet of the first shake correction magnetic drive mechanism that is fixed to the holder and faces the first coil via the frame plate on the fixed body side, and a first magnet that is fixed to the holder and faces the fixed body side. The optical unit with a shake correction function according to claim 2, further comprising a second magnet of the second shake correction magnetic drive mechanism that faces the second coil through a frame plate portion. The fixed body includes a flange portion that is bent from one end of the fixed body side frame plate portion in the optical axis direction and extends toward the outer peripheral side,
The fixed body side frame plate portion includes a fixed body side first frame plate portion to which the first coil is fixed, and a fixed body side located on the opposite side from the fixed body side first frame plate portion with the optical axis in between. a second frame plate portion, a third frame plate portion on the fixed body side to which the second coil is fixed, and a third frame plate portion on the fixed body side located on the opposite side of the third frame plate portion on the fixed body side with the optical axis in between. 4 frame plate parts;
The flange portion includes a first frame plate portion flange portion bent from the first frame plate portion on the fixed body side, and a third frame plate portion flange portion bent from the third frame plate portion on the fixed body side. The optical unit with a shake correction function according to claim 3. The holder includes a metal holder side frame plate that surrounds the camera module,
The holder-side frame plate portion is located on the opposite side of the holder-side first frame plate portion to which the first magnet is fixed and the holder-side first frame plate portion with the optical axis in between. a second frame plate portion on the holder side facing the second frame plate portion on the fixed body side; a third frame plate portion on the holder side to which the second magnet is fixed; and a third frame plate portion on the fixed body side with the optical axis in between. a holder-side fourth frame plate portion located on the opposite side of the plate portion and facing the fixed body-side fourth frame plate portion;
The second frame plate portion on the holder side includes a first bent plate portion that protrudes toward the outer circumferential side midway in the circumferential direction and faces the second frame plate portion on the fixed body side with a predetermined gap,
The fourth frame plate portion on the holder side includes a second bent plate portion that protrudes toward the outer circumferential side midway in the circumferential direction and faces the fourth frame plate portion on the fixed body side with a predetermined gap,
5. The optical unit with shake correction function according to claim 4, wherein the stopper mechanism includes the first bending plate part and the second bending plate part.

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