JP7346284B2 - Optical unit with shake correction function - Google Patents

Description

The present invention relates to an optical unit with a shake correction function that connects a movable body and a fixed body using a gimbal mechanism.

Optical units mounted on mobile terminals and moving objects have a structure in which the movable object on which the camera module is mounted is rotated around a predetermined axis in order to suppress disturbances in captured images when the mobile terminal or moving object moves. Some cameras are equipped with a mechanism to correct shake. 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, a fixed body, and a gimbal mechanism that connects the movable body and the fixed body. The gimbal mechanism supports the movable body rotatably around a first axis and around a second axis orthogonal to the first axis. The gimbal mechanism includes a rectangular metal gimbal frame (spring member) and a connection mechanism that connects the gimbal frame to a movable body and a fixed body. The connection mechanism includes a metal sphere, a sphere fixing part (joint part) to which the sphere is fixed, and a sphere support part including a hemispherical recess with which the sphere comes into contact.

In the gimbal mechanism, one of the sphere fixing part and the sphere support part is provided at a diagonal position on the first axis of the gimbal frame and at a diagonal position on the second axis, and the other is provided at a diagonal position on the first axis of the movable body. It is provided at a corner position and at a diagonal position on the second axis of the fixed body. The spherical support portion is configured by, for example, fixing a metal support member (thrust receiving member) in which a hemispherical recess is formed to a movable body and a fixed body.

JP2015-217432A

If a mobile device or moving object equipped with an optical unit with shake correction function receives an external shock, the connection mechanism may be affected by the rotation axes (first and second axes) due to the weight of the moving object, etc. Loads may be applied in cross directions. That is, the connection mechanism may be subjected to a load in the optical axis direction. Therefore, when an external impact is applied, the gimbal frame may bend and the sphere fixed to the sphere fixing part may come off from the hemispherical recess provided in the sphere support part. As a result, the gimbal frame may come off the movable body and the fixed body, and the connection between the gimbal frame and the movable body and the fixed body may be released.

The present inventor has proposed a detachment prevention structure that prevents the gimbal frame from coming off from the movable body and the fixed body in an optical unit with a shake correction function that is equipped with a connection mechanism that rotatably connects the gimbal frame and the movable body. There is. That is, in the optical unit with a shake correction function disclosed in Japanese Patent Application No. 2019-197808, the movable body includes a holder made of resin, and the fixed body includes a case made of resin. The holder and the case are provided with a holding portion that holds the thrust receiving member having a hemispherical recess. The holding portion includes a recess in which the thrust receiving member is disposed, and an opposing wall portion facing the thrust receiving member disposed in the recess. The opposing wall portion of the holding portion is arranged such that the end portion of the gimbal frame provided with the hemispherical recess cannot pass through the gap between the thrust receiving member and the opposing wall portion.

However, the gimbal frame fall-off prevention structure proposed in Japanese Patent Application No. 2019-197808 requires a recess and an opposing wall to be provided in the holding portion, and the shape of the holding portion is complicated. Therefore, it is difficult to reduce the thickness of the holder and case provided with the holding portion. Furthermore, in a structure in which opposing walls are formed on the holder and case, which are resin parts, to prevent the gimbal frame from coming off, there is a limit to how thin the gimbal frame can be made in order to ensure strength. Therefore, this is disadvantageous in reducing the size of an optical unit with a shake correction function. Furthermore, in a structure in which the holder and case, which are resin parts, are formed with opposing walls to prevent the gimbal frame from coming off, foreign matter (contamination) is scattered from the resin parts when the metal gimbal frame collides with the resin parts. Therefore, there is a risk that the foreign matter will adversely affect the operation of the optical unit with a shake correction function.

In view of these points, it is an object of the present invention to prevent the gimbal frame from coming off, to reduce the size of an optical unit with a shake correction function, and to prevent foreign matter from being generated due to collision between the gimbal frame and resin parts. It's about suppressing things.

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, and a movable body that is swingable around a first axis intersecting the optical axis of the camera module. a gimbal mechanism that supports the movable body and allows it to swing around a second axis intersecting the optical axis and the first axis; a fixed body that supports the movable body via the gimbal mechanism; The gimbal mechanism includes a gimbal frame and a fixed body connection mechanism that rotatably connects the gimbal frame and the fixed body around the second axis, and the fixed body connection mechanism includes a spherical body and the spherical body. a fixed body-side gimbal frame receiving member having a metal thrust receiving member fixed to the fixed body-side gimbal frame receiving member; and a fixed body-side support portion having a concave curved surface that contacts the sphere in the gimbal frame, and an optical axis direction, one of the optical axis directions is a first direction, the other optical axis direction is a second direction, the circumference around the optical axis is a circumferential direction, and the direction along the second axis is a second axis. The thrust receiving member includes a spherical body fixing portion to which the spherical body is fixed, and a plate portion that faces the fixed body side supporting portion in the second axial direction via the spherical body; a pair of arm portions that protrude from both ends of the circumferential direction in the second direction toward the side where the fixed body side support portion is located beyond the spherical body fixing portion and face each other in the circumferential direction; a foot portion protruding from an end toward the side where the fixed body side support portion is located, the fixed body includes a metal case surrounding the outer peripheral side of the movable body, and the fixed body side gimbal frame receiving member: The pair of arm portions and the foot portion are fixed to the outer peripheral surface of the case and held at a position where the second axis passes through the center of the sphere, and the fixed body side support portion is fixed to the outer circumferential surface of the case, and the fixed body side support portion is It is characterized in that it is arranged between the plate part and the case.

According to the present invention, the fixed body connection mechanism that rotatably connects the fixed body and the gimbal frame around the second axis connects the spherical body provided in the fixed body side gimbal frame receiving member and the fixed body side supporting portion of the gimbal frame. A concave curved surface is provided. Therefore, the fixed body and the gimbal frame can be connected by bringing the sphere into point contact with the concave curved surface. Here, the fixed body side gimbal frame receiving member includes a plate portion to which a sphere is fixed, and a pair of arms and legs that protrude from the plate portion and are fixed to the outer peripheral surface of the case. , disposed between the plate part and the case in the second axis direction. In this way, by fixing the arms and legs of the gimbal frame receiving member on the fixed body side directly to the metal case, the fixed body side support part can be held between the plate part and the case, and the gimbal frame can be prevented from coming off. can be achieved. Furthermore, the case can be made thinner than in the case where a holding portion for holding the fixed body side gimbal frame receiving member is formed in a resin member. Therefore, it is possible to downsize the optical unit with a shake correction function. Furthermore, since the fixed body side support portion of the gimbal frame is held between the metal case and the thrust receiving member, it is possible to prevent or suppress the generation of foreign matter (contamination) due to collision between the gimbal frame and the resin component.

In the present invention, the fixed body side support part is arranged between the arm part and the leg part in the optical axis direction, and the width of the fixed body side support part in the circumferential direction is equal to the width of the fixed body side support part in the circumferential direction. It is preferable that the spacing is larger than the circumferential spacing. In this way, the pair of arm parts can prevent the fixed body side support part from coming off.

In the present invention, the gimbal frame includes a second gimbal frame extending portion extending in the optical axis direction via between the pair of arm portions, and the second gimbal frame extending portion extends in the first direction. The case includes the fixed body side support part at the tip thereof, and a passage part located between the pair of arm parts in the second direction of the fixed body side support part, and the case It is preferable to include a cutout portion cut out at a position on the second axis. In this way, the second gimbal frame extension part can be arranged in the notch, so even if the fixed side connection mechanism is arranged on the outer peripheral surface of the case, the second gimbal frame extension part and the case can be arranged. Interference can be avoided.

In the present invention, it is preferable that the pair of arm portions and the foot portion are welded to the case. In this way, the fixing strength can be increased. Additionally, assembly time can be reduced.

In the present invention, the gimbal mechanism includes a movable body connection mechanism that rotatably connects the gimbal frame and the movable body about the first axis, and the movable body connection mechanism includes the sphere and the sphere that is fixed. a movable body side gimbal frame receiving member including the thrust receiving member made of metal; and a movable body side support portion having a concave curved surface that contacts the spherical body in the gimbal frame, and the movable body is provided with an outer periphery of the camera module. The movable body side gimbal frame receiving member includes a metal holder that surrounds the movable body side gimbal frame receiving member, and the pair of arm portions and the foot portion are fixed to the outer peripheral surface of the holder, and the first axis passes through the center of the spherical body. It is preferable that the movable body side support part is held in position and arranged between the plate part and the holder in the first axial direction. In this way, in the movable body connection mechanism, by directly fixing the arms and legs of the movable body side gimbal frame receiving member to the metal holder, there is a space between the movable body side gimbal frame receiving member and the holder on the movable body side. The support part can be held and the gimbal frame can be prevented from falling off. Furthermore, the holder can be made thinner than in the case where a holding portion for holding the movable body side gimbal frame receiving member is formed in a holder made of a resin member. Therefore, it is possible to downsize the optical unit with a shake correction function. Furthermore, since the movable body side support portion of the gimbal frame is held between the metal holder and the thrust receiving member, it is possible to suppress the generation of foreign matter (contamination) due to collision between the gimbal frame and the resin component. Further, since the same gimbal frame receiving member on the movable body side as the gimbal frame receiving member on the fixed body side can be used, parts can be shared between the fixed body connection mechanism and the movable body connection mechanism.

In this case, it is preferable that the pair of arms and the legs are welded to the holder. In this way, the fixing strength can be increased. Additionally, assembly time can be reduced.

In the present invention, the gimbal mechanism includes a movable body connection mechanism that rotatably connects the gimbal frame and the movable body about the first axis, and the movable body connection mechanism includes the sphere and the sphere that is fixed. The camera module includes a movable body side gimbal frame receiving member including the thrust receiving member made of metal, and a movable body side support portion having a concave curved surface that contacts the sphere in the gimbal frame, and the camera module includes a metal housing. The movable body side gimbal frame receiving member is configured such that the pair of arm portions and the foot portion are fixed to the outer circumferential surface of the housing and held at a position where the first axis passes through the center of the spherical body, and the movable body side gimbal frame receiving member is It is preferable that the support part is disposed between the plate part and the housing in the first axial direction. In this way, in the movable body connection mechanism, by directly fixing the arms and legs of the movable body side gimbal frame receiving member to the metal housing, there is a gap between the movable body side gimbal frame receiving member and the camera module housing. The movable body side support part can be held in place, and the gimbal frame can be prevented from coming off. Further, since the movable body side gimbal frame receiving member is directly fixed to the housing of the camera module, the movable body can be made smaller. Therefore, it is possible to downsize the optical unit with a shake correction function. Further, since the movable body side support portion of the gimbal frame is held between the metal housing and the thrust receiving member, it is possible to suppress generation of foreign matter due to collision between the gimbal frame and the resin component. Further, since the same gimbal frame receiving member on the movable body side as the gimbal frame receiving member on the fixed body side can be used, parts can be shared between the fixed body connection mechanism and the movable body connection mechanism.

In this case, it is preferable that the pair of arm parts and the leg part are welded to the housing. In this way, the fixing strength can be increased. Additionally, assembly time can be reduced.

In the present invention, the movable body side support portion is disposed between the arm portion and the foot portion of the movable body side gimbal frame receiving member in the optical axis direction, and the width of the movable body side support portion in the circumferential direction is , is preferably larger than the circumferential spacing between the pair of arm portions. In this way, it is possible to prevent the movable body side support portion from coming off by the pair of arm portions.

In the present invention, the movable body side support portion and the fixed body side support portion each include a convex portion in which the concave curved surface is formed, and an edge portion extending from the convex portion to both sides in the circumferential direction, and the edge portion is , it is preferable to form concentric circles around the convex portion. In this manner, by providing the concentric edge, even if the gimbal frame is assembled tilted around the second axis or the first axis, the circumferential protrusion dimension of the edge does not change. Therefore, it is possible to prevent the fixed body side support part from falling out of the thrust receiving member due to the tilting of the gimbal frame around the second axis, and also prevent the movable body side support part from being thrust when the gimbal frame is tilted around the first axis. It can be prevented from falling off from the receiving member.

According to the present invention, the fixed body connection mechanism that rotatably connects the fixed body and the gimbal frame around the second axis connects the spherical body provided in the fixed body side gimbal frame receiving member and the fixed body side supporting portion of the gimbal frame. A concave curved surface is provided. Therefore, the fixed body and the gimbal frame can be connected by bringing the sphere into point contact with the concave curved surface. Here, the fixed body side gimbal frame receiving member includes a plate portion to which a sphere is fixed, and a pair of arms and legs that protrude from the plate portion and are fixed to the outer peripheral surface of the case. , disposed between the plate part and the case in the second axis direction. In this way, by fixing the arms and legs of the fixed body side gimbal frame receiving member directly to the metal case, the fixed body side support part can be held between the fixed body side gimbal frame receiving member and the case, and the gimbal frame can be prevented from coming off. Further, the case can be made thinner than in the case where a holding portion for holding the fixed body side gimbal frame receiving member is formed in a case made of a resin member. Therefore, it is possible to downsize the optical unit with a shake correction function. Further, since the fixed body side support portion of the gimbal frame is held between the metal case and the thrust receiving member, it is possible to suppress the generation of foreign matter due to collision between the gimbal frame and the resin component.

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 an exploded perspective view of an optical unit with a shake correction function. FIG. 3 is a plan view of the optical unit with shake correction function with the first cover and the second cover removed. FIG. 3 is a perspective view of the optical unit with shake correction function with the first cover removed. FIG. 3 is an exploded perspective view of the optical unit with shake correction function with the first cover removed. FIG. 3 is an exploded perspective view of the gimbal frame receiving member. FIG. 3 is a side view of the gimbal frame, and a side view of the gimbal frame and the gimbal frame receiving member. FIG. 3 is a perspective view of a camera module, a movable body connection mechanism, and a gimbal frame.

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 1 with a shake correction function. FIG. 2 is an exploded perspective view of the optical unit 1 with a shake correction function. FIG. 3 is a plan view of the optical unit 1 with shake correction function, with the first cover 8 and the second cover 9 removed. FIG. 4 is a perspective view of the optical unit 1 with a shake correction function with the first cover 8 removed. FIG. 5 is an exploded perspective view of the optical unit 1 with a shake correction function with the first cover 8 removed.

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 an optical axis direction along the optical axis L of the camera module 3. The -Z direction is one of the optical axis directions and is the first direction. The +Z direction is the other direction of the optical axis and is the second direction. Further, the -Z direction (first direction) is the image side of the camera module 3, and the +Z direction (second direction) is the subject side of the camera module 3.

As shown in FIGS. 1 and 2, the optical unit 1 with a shake correction function includes a movable body 4 equipped with a camera module 3, a gimbal mechanism 5 that rotatably supports the movable body 4, and A fixed body 6 that supports the movable body 4 and a shake correction drive mechanism 7 that swings the movable body 4 with respect to the fixed body 6 are provided. 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 embodiment, 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.

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

FIG. 6 is an exploded perspective view of the gimbal frame receiving member 17. FIG. 6(a) is an exploded perspective view seen from the outside in the radial direction, and FIG. 6(b) is an exploded perspective view seen from the inside in the radial direction. The movable body connection mechanism 11 and the fixed body connection mechanism 12 contact the sphere 15 in the gimbal frame 10 with a gimbal frame receiving member 17 comprising a metal sphere 15 and a metal thrust receiving member 16 to which the sphere 15 is fixed. and a support portion 20 having a concave curved surface 19. As shown in FIG. 2, the gimbal frame receiving member 17 of the movable body connection mechanism 11 is fixed to the camera module 3. Further, the gimbal frame receiving member 17 of the fixed body connection mechanism 12 is fixed to a metal case 50 that constitutes the fixed body 6.

Here, when the gimbal frame receiving member 17 fixed to the movable body 4 is the movable body side gimbal frame receiving member and the gimbal frame receiving member 17 fixed to the fixed body 6 is the fixed body side gimbal frame receiving member, the movable body side Since the gimbal frame receiving member and the fixed body side gimbal frame receiving member are the same member, they will be described using 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) fixed to the movable body 4 is used as a movable body side support part, and is fixed to 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 FIGS. 2 and 3, the shake correction drive mechanism 7 includes a first magnetic drive mechanism 7X that generates a driving force that rotates the movable body 4 around the X-axis, and a first magnetic drive mechanism 7X that rotates the movable body 4 around the Y-axis. It is provided with a second magnetic drive mechanism 7Y that generates a driving force that causes the magnetic field to move. The first magnetic drive mechanism 7X is arranged on the -Y direction side of the movable body 4. The second magnetic drive mechanism 7Y is arranged on the -X direction side of the movable body 4. As shown in FIG. 3, the first magnetic drive mechanism 7X includes a pair of magnets 25X and a coil 26X. The second magnetic drive mechanism 7Y includes a set of magnets 25Y and a coil 26Y. The magnet 25X and the coil 26X of the first magnetic drive mechanism 7X face each other in the Y-axis direction. The magnet 25Y and the coil 26Y of the second magnetic drive mechanism 7Y face each other in the X-axis direction. In this example, the magnets 25X, 25Y are arranged on the movable body 4, and the coils 26X, 26Y are arranged on the fixed body 6. Note that the magnets 25X, 25Y may be placed on the fixed body 6, and the coils 26X, 26Y may be placed on the movable body 4.

(movable body)
As shown in FIG. 2, the movable body 4 includes a camera module 3. The camera module 3 includes a housing 32 having an octagonal shape when viewed from the Z-axis direction, a lens barrel portion 33 protruding from the center portion of the housing 32 in the second direction, and an end portion of the housing 32 in the −Z direction. A substrate 34 is provided. The camera module 3 includes a lens 2 held by a lens barrel section 33 and a substrate 34.
The camera is equipped with an image sensor (not shown) mounted on the camera. The image sensor is housed in a housing 32 and arranged on the optical axis L of the lens 2.

As shown in FIGS. 2 and 3, the housing 32 includes a first side plate portion 35 extending in the Y-axis direction in the −X direction of the lens barrel portion 33, and a first side plate portion 35 extending in the +X direction of the lens barrel portion 33 along the side surface of the housing 32. A second side plate portion 36 extending in the Y-axis direction is provided. Further, the housing 32 has a third side plate part 37 extending in the X-axis direction along the side surface of the housing 32 in the -Y direction of the lens barrel part 33, and a third side plate part 37 extending in the X-axis direction along the side surface of the housing 32 in the +Y direction of the lens barrel part 33. A fourth side plate portion 38 extending in the axial direction is provided.

As shown in FIG. 3, a magnet 25Y of the second magnetic drive mechanism 7Y is fixed to the first side plate portion 35. A magnet 25X is fixed to the third side plate portion 37. The housing 32 is made of a magnetic material and functions as a yoke for the magnets 25X and 25Y. The magnets 25X and 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.

As shown in FIGS. 2 and 3, in the housing 32, between the first side plate part 35 and the third side plate part 37, there is a groove inclined at 45 degrees with respect to the first side plate part 35 and the third side plate part 37. A fifth side plate portion 39 is formed. A sixth side plate part 40 is formed between the second side plate part 36 and the fourth side plate part 38 and is inclined at 45 degrees with respect to the second side plate part 36 and the fourth side plate part 38 . A seventh side plate part 41 is formed between the first side plate part 35 and the fourth side plate part 38 and is inclined at 45 degrees with respect to the first side plate part 35 and the fourth side plate part 38 . An eighth side plate part 42 is formed between the second side plate part 36 and the third side plate part 37 and is inclined at 45 degrees with respect to the second side plate part 36 and the third side plate part 37. The gimbal frame receiving member 17 (movable body side gimbal frame receiving member) of the movable body connection mechanism 11 is respectively attached to the fifth side plate portion 39 and the sixth side plate portion 40 arranged at diagonal positions in the first axis direction of the housing 32. is fixed.

(fixed body)
As shown in FIGS. 1 and 2, the fixed body 6 includes a metal case 50, a first cover 8 that covers the case 50 from the +Z direction side, and a first cover 8 that covers the case 50 from the -Z direction side. 2 cover 9. The fixed body 6 holds coils 26X and 26Y fixed to the flexible printed circuit board 60. The case 50 has a frame shape surrounding the outer peripheral side of the movable body 4. The case 50, the first cover 8, and the second cover 9 are made of nonmagnetic metal. Case 50, first cover 8, and second cover 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. Furthermore, the lens barrel portion 33 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 .

The case 50 includes a first frame part 51 extending in the Y-axis direction in the -X direction of the movable body 4, a second frame part 52 extending in the Y-axis direction in the +X direction of the movable body 4, and a second frame part 52 extending in the Y-axis direction in the -Y direction of the movable body 4. It includes a third frame part 53 extending in the axial direction, and a fourth frame part 54 extending in the X-axis direction in the +Y direction of the movable body 4. In the case 50, a first inclined frame part 55 is formed between the first frame part 51 and the fourth frame part 54, and is inclined at 45 degrees with respect to the first frame part 51 and the fourth frame part 54. . Further, a second inclined frame part 56 is formed between the second frame part 52 and the third frame part 53 and is inclined at 45 degrees with respect to the second frame part 52 and the third frame part 53. Further, a third inclined frame part 57 is formed between the first frame part 51 and the third frame part 53 and is inclined at 45 degrees with respect to the first frame part 51 and the third frame part 53.

As shown in FIGS. 2 and 3, the gimbal frame receiving member 17 (fixed body side gimbal frame receiving member) of the fixed body connection mechanism 12 is fixed to the first inclined frame portion 55 and the second inclined frame portion 56, respectively. Ru. As shown in FIGS. 3, 4, and 5, the first inclined frame part 55 and the second inclined frame part 56 are provided with a cutout part 14 cut out in the -Z direction from the edge in the +Z direction, and the gimbal The frame receiving member 17 is arranged in the -Z direction of the notch 14.

A coil placement hole 58 is provided in the first frame portion 51 and the third frame portion 53. Each coil arrangement hole 58 is a through hole, and the coil 26X of the first magnetic drive mechanism 7X and the coil 26Y of the second magnetic drive mechanism 7Y are arranged, respectively. The coils 26X and 26Y are oval air-core coils that are elongated in the circumferential direction, and the two long sides located on the +Z direction side and the -Z direction side are used as effective sides. A flexible printed circuit board 60 is fixed to the radially outer side of the first frame part 51 and the third frame part 53. The flexible printed circuit board 60 has a first board portion 61 that overlaps the coil placement hole 58 of the third frame portion 53 from the outside in the radial direction, and a first board portion 61 that overlaps the coil placement hole 58 of the first frame portion 51 from the outside in the radial direction. A second substrate portion 62 is provided. A coil 26X is fixed to the first substrate portion 61, and a coil 26Y is fixed to the second substrate portion 62. Coil 26X and coil 26Y are electrically connected to 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 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 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 coils 26X and 26Y. The magnetic sensor 65 is, for example, a Hall element. The optical unit 1 with a shake correction function 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 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 coil 26Y.

(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 gimbal frame main body 70 that extends radially outward from a diagonal position in the first axis 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 a second gimbal frame extension portion 72 extending 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 housing 32 of the camera module 3 when viewed from the Z-axis direction.

FIG. 7A is a side view of the gimbal frame 10, viewed from the first axis direction. FIG. 7(b) is a side view of the gimbal frame 10 and the gimbal frame receiving member 17, as seen from the second axial direction. As shown in FIGS. 5 and 7, the gimbal frame main body 70 includes a rectangular center plate portion 75 extending in the first axis direction at the center in the second axis direction, and a rectangular center plate portion 75 extending from the center plate portion 75 in the second axis direction. A pair of trapezoidal corner plate portions 76 are provided that are inclined in the +Z direction. In the gimbal frame main body 70 , the square plate portion 76 in the second axis 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 direction move in the Z-axis direction, the movable body 4 and the gimbal Collision with the frame 10 can be avoided.

As shown in FIGS. 5 and 7, the first gimbal frame extension part 71 is a first gimbal frame extension part 71 that is inclined in the -Z direction toward the first axis direction from the center plate part 75 of the gimbal frame main body part 70. and a first gimbal frame extension part second extension part 82 extending in the Z-axis direction in the -Z direction of the first gimbal frame extension part first extension part 81. The first gimbal frame extension part 71 includes a support part 20 (movable body side support part) that constitutes the movable body 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, 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 radius of curvature of the concave curved surface 19 is larger than the radius of curvature of the sphere 15 that constitutes the movable body 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. 5 and 7, the second gimbal frame extension portion 72 extends from each of the pair of square plate portions 76 of the gimbal frame main body portion 70 toward the second axis direction, and is inclined in the −Z direction. A second gimbal frame extension part second extension part extending in the Z-axis direction from the -Z direction end of the gimbal frame extension part first extension part 85 and the second gimbal frame extension part first extension part 85. 86. The second gimbal frame extension section 72 includes a support section 20 (fixation body side support section) that constitutes the fixed body 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. 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.

(Configuration of common parts of movable body connection mechanism and fixed body connection mechanism)
Next, the movable body connection mechanism 11 and the fixed body connection mechanism 12 will be explained in more detail. In this embodiment, the movable body connection mechanism 11 and. The fixed body connection mechanism 12 has a common configuration. That is, the housing 32 of the camera module 3 and the gimbal frame receiving member 17 fixed to the case 50 are the same member. Further, the gimbal frame 10 is provided with support portions 20 having the same shape at diagonal positions on the first axis R1 and diagonal positions on the second axis R2, and each support portion 20 includes a gimbal frame receiver. A concave curved surface 19 is formed in point contact with the sphere 15 of the member 17.

(Gimbal frame receiving member)
As shown in FIG. 6, the gimbal frame receiving member 17 includes a metal sphere 15 and a metal thrust receiving member 16 to which the sphere 15 is fixed. The thrust receiving member 16 includes a plate part 91 including a sphere fixing part 90 to which the sphere 15 is fixed, and a leg part 92 bent at right angles to the first axis direction from the -Z direction (first direction) end of the plate part 91. Equipped with

The plate portion 91 has an overall rectangular shape that is long in the Z-axis direction (optical axis direction). The sphere fixing part 90 is a circular through hole provided in the plate part 91. The inner diameter of the through hole is smaller than the diameter of the sphere 15. The sphere 15 is fixed to the thrust receiving member 16 by welding while being partially inserted into the sphere fixing part 90.

Furthermore, the thrust receiving member 16 protrudes from both ends of the circumferential direction in the +Z direction (second direction) beyond the spherical body fixing part 90 of the plate part 91 toward the side where the support part 20 is located in the first axial direction or the second axial direction. A pair of arm portions 94 are provided. In the movable body connection mechanism 11, the arm portion 94 protrudes in the first axial direction, and in the fixed body connection mechanism 12, the arm portion 94 protrudes in the second axial direction. The pair of arm portions 94 face each other in the circumferential direction. As shown in FIG. 6, each of the pair of arm portions 94 includes a protruding plate portion 95 bent in the first axial direction or the second axial direction from the circumferential end of the plate portion 91, and a plate portion of the protruding plate portion 95. An extended plate portion 96 is provided, which is bent in the circumferential direction from an end opposite to the plate portion 91 in a direction opposite to the plate portion 91 .

The foot portion 92 has a foot protruding plate portion 97 bent at right angles to the first axis direction from the −Z direction (first direction) end of the plate portion 91, and a foot protruding plate portion 97 that is opposite to the plate portion 91. A foot extension plate portion 98 is provided that is bent from the side end at right angles in the -Z direction (first direction). The distance between the foot extending plate portion 98 and the plate portion 91 is the same as the distance between the extending plate portion 96 provided on the pair of arm portions 94 and the plate portion 91. Furthermore, the circumferential width of the distal end portion of the foot protruding plate portion 97 connected to the foot extension plate portion 98 is narrower than the circumferential width of the plate portion 91 .

As shown in FIG. 7(b), in the movable body connection mechanism 11, the plate portion 91 of the thrust receiving member 16 is connected to the support portion 20 of the first gimbal frame extension portion 71 via the sphere 15 in the first axial direction. opposite. Similarly, in the fixed body connection mechanism 12, the plate portion 91 of the thrust receiving member 16 faces the support portion 20 of the second gimbal frame extension portion 72 via the sphere 15 in the second axial direction. The foot portion 92 is located in the −Z direction of the support portion 20 and faces the support portion 20 in the Z-axis direction.

(Movable body connection mechanism)
FIG. 8 is a perspective view of the camera module 3, the movable body connection mechanism 11, and the gimbal frame 10. As shown in FIGS. 3 and 8, the gimbal frame receiving member 17 (movable body side gimbal frame receiving member) is fixed. Since the gimbal frame receiving member 17 (movable body side gimbal frame receiving member) is fixed at a position where the first axis R1 passes through the center of the sphere 15, the concave curved surface 19 of the support portion 20 of the first gimbal frame extension portion 71 and the sphere 15 make point contact on the first axis R1 line. Thereby, as shown in FIGS. 3 and 4, a movable body connection mechanism 11 is configured that rotatably connects the gimbal frame 10 and the movable body 4 about the first axis R1. When assembling the movable body connection mechanism 11, the support part 20 provided at the tip of the first gimbal frame extension part 71 is inserted between the leg part 92 and the arm part 94, and then the thrust receiving member 16 is inserted into the first gimbal frame extension part 71. It is fixed to the fifth side plate part 39 and the sixth side plate part 40.

As shown in FIG. 8, the sixth side plate portion 40 of the housing 32 forms an opposing wall portion that faces the plate portion 91 of the thrust receiving member 16 in the first axial direction. The support portion 20 is arranged between the plate portion 91 and the fifth side plate portion 39 in the first axial direction. In the thrust receiving member 16, an extending plate portion 96 provided at the tips of the pair of arm portions 94 and a foot extending plate portion 98 provided at the tips of the foot portions 92 abut against the fifth side plate portion 39. . In this embodiment, the housing 32 of the camera module 3 is made of metal, and the thrust receiving member 16 is fixed to the fifth side plate portion 39 by welding. Therefore, the pair of extension plate portions 96 and the foot extension plate portion 98 are provided with welding marks. The structure for fixing the thrust receiving member 16 to the fifth side plate portion 39 is the same, and therefore a description thereof will be omitted.

The first gimbal frame extension portions 71 are provided at two diagonal positions in the first axis direction of the gimbal frame 10. The two first gimbal frame extending portions 71 are bent inward, and are connected to the fifth side plate portion 39 and the thrust receiving member 16 provided at diagonal positions in the first axial direction of the housing 32. and between the sixth side plate portion 40 and the thrust receiving member 16. As a result, the first gimbal frame extension portion 71 is urged toward the outer circumference, and the support portion 20 is urged toward the sphere 15. Therefore, the concave curved surface 19 and the spherical body 15 are in reliable contact.

When the concave curved surface 19 provided on the support part 20 of the first gimbal frame extension part 71 and the sphere 15 are in contact with each other, the first gimbal frame extension part second extension part 82 is connected to the pair of arm parts 94 It extends in the Z-axis direction through the space between. More specifically, as shown in FIG. 8, the support part 20 (movable body side support part) provided at the tip of the first gimbal frame extension part second extension part 82 in the -Z direction is connected to a pair of arms. The passage portion 84 is located in the −Z direction of the portion 94 and is located between the pair of arm portions 94. Further, a foot portion 92 is arranged in the −Z direction of the support portion 20.

As shown in FIG. 5, the circumferential width H1 of the support portion 20 is longer than the circumferential width H2 of the passage portion 84 and longer than the circumferential spacing H3 between the pair of arm portions 94. Note that the dimensions H1, H2, and H3 shown in FIG. 5 are the dimensions of the support part 20 and the thrust receiving member 16 in the fixed body connection mechanism 12, but the dimensions of the support part 20 and the thrust receiving member 16 in the movable body connection mechanism 11 are also the same. are the same. In the support portion 20, a convex portion 21 provided with a concave curved surface 19 is disposed between a pair of arm portions 94, and edges 22 extending to both sides in the circumferential direction of the convex portion 21 are arranged in the Z-axis direction (optical axis direction). When viewed from above, it overlaps with the pair of arm portions 94. Therefore, the pair of arm portions 94 restricts the support portion 20 from coming off in the +Z direction.

(Fixed body connection mechanism)
As shown in FIG. 4, the first inclined frame part 55 and the second inclined frame part 56, which are provided with the outer circumferential surface in the second axis direction of the case 50, each have a gimbal frame receiving member 17 (movable body side gimbal frame receiving member 17). member) is fixed. Since the gimbal frame receiving member 17 (fixed body side gimbal frame receiving member) is fixed at a position where the second axis R2 passes through the center of the sphere 15, the concave curved surface 19 of the support portion 20 of the second gimbal frame extension portion 72 and the sphere 15 come into point contact on the second axis R2 line. As a result, as shown in FIGS. 3 and 4, when assembling the fixed body connection mechanism 12 that configures the fixed body connection mechanism 12 that rotatably connects the gimbal frame 10 and the fixed body 6 around the second axis R2, , insert the support part 20 provided at the tip of the second gimbal frame extension part 72 between the foot part 92 and the arm part 94, and then insert the thrust receiving member 16 into the first inclined frame part 55 and the second gimbal frame part 55. It is fixed to the inclined frame part 56.

As shown in FIG. 4, the second inclined frame portion 56 of the case 50 forms an opposing wall portion that faces the plate portion 91 of the thrust receiving member 16 in the first axial direction. The support portion 20 is arranged between the plate portion 91 and the second inclined frame portion 56 in the first axial direction. In the thrust receiving member 16, an extending plate portion 96 provided at the tips of the pair of arm portions 94 and a foot extending plate portion 98 provided at the tips of the foot portions 92 contact the second inclined frame portion 56. come into contact with In this embodiment, since the case 50 of the fixed body 6 is made of metal, the thrust receiving member 16 is fixed to the second inclined frame portion 56 by welding. Therefore, the pair of extension plate portions 96 and the foot extension plate portion 98 are provided with welding marks. The structure for fixing the thrust receiving member 16 to the first inclined frame portion 55 is the same, and therefore a description thereof will be omitted.

The second gimbal frame extension portions 72 are provided at two diagonal positions of the gimbal frame 10 in the second axis direction. The second gimbal frame extending portions 72 at two locations are bent toward the inner circumference, and the first inclined frame portion 55 and the thrust receiving member 16 provided at diagonal positions in the second axis direction of the case 50 and between the second inclined frame portion 56 and the thrust receiving member 16. As a result, the second gimbal frame extension portion 72 is urged toward the outer circumference, and the support portion 20 is urged toward the sphere 15. Therefore, the concave curved surface 19 and the spherical body 15 are in reliable contact.

As shown in FIG. 5, the case 50 includes a cutout portion 14 that is formed by cutting out the +Z-direction edges of the first inclined frame portion 55 and the second inclined frame portion 56 located on the second axis R2. The circumferential width of the notch 14 is larger than the circumferential width of the first extended portion 85 of the second gimbal frame extension. As shown in FIG. 4, the second gimbal frame extension part first extension part 85 extends in a direction inclined with respect to the Z-axis direction, passes through the notch part 14, and extends into the first inclined frame part 55. And it is connected to the fixed body connection mechanism 12 arranged on the outer peripheral side of the second inclined frame part 56.

When the concave curved surface 19 of the support section 20 and the sphere 15 in the second gimbal frame extension section 72 are in contact with each other, the second extension section 86 of the second gimbal frame extension section extends between the pair of arm sections 94 . and extends in the Z-axis direction. More specifically, as shown in FIG. 4, the support part 20 (fixed body side support part) provided at the tip of the second gimbal frame extension part 86 in the -Z direction is connected to a pair of arms. The passage portion 84 is located in the −Z direction of the portion 94 and is located between the pair of arm portions 94. Further, a foot portion 92 is arranged in the −Z direction of the support portion 20.

As shown in FIG. 5, the circumferential width H1 of the support portion 20 of the fixed body connection mechanism 12 is longer than the circumferential width H2 of the passage portion 84, and the circumferential spacing H3 between the pair of arm portions 94. longer than In the supporting part 20, a convex part 21 provided with a concave curved surface 19 is disposed between a pair of arm parts 94, and an edge part 22 extending to both sides in the circumferential direction of the convex part 21 is arranged in the Z-axis direction (optical axis direction). direction), it overlaps with the pair of arm portions 94. Therefore, the pair of arm portions 94 restricts the support portion 20 from coming off in the +Z direction.

(Main effects of this form)
As described above, the optical unit with a shake correction function of the present embodiment includes a movable body 4 including a camera module 3, and a movable body 4 that is swingable around the first axis R1 that intersects the optical axis L of the camera module 3. a gimbal mechanism 5 that supports the movable body 4 so as to be swingable around a second axis R2 that intersects the optical axis L and the first axis R1; and a fixed body that supports the movable body 4 via the gimbal mechanism 5. 6 and has. The gimbal mechanism 5 includes a gimbal frame 10 and a fixed body connection mechanism 12 that rotatably connects the gimbal frame 10 and the fixed body 6 around a second axis R2. a gimbal frame receiving member 17 (fixed body side gimbal frame receiving member) including a metal thrust receiving member 16 to which a metal thrust receiving member 16 is fixed; ). The direction along the optical axis L is the optical axis direction, one of the optical axis directions is the -Z direction (first direction), the other optical axis direction is the +Z direction (second direction), and the rotation around the optical axis L is When the direction along the second axis R2 is defined as the second axis direction, the thrust receiving member 16 includes a sphere fixing part 90 to which the sphere 15 is fixed, and connects the support part 20 (fixed) via the sphere 15. A plate part 91 that faces the body side support part) in the second axial direction, and a plate part 91 that faces the spherical body fixing part 90 of the plate part 91 from both ends of the circumferential direction in the second direction on the side where the support part 20 (fixed body side support part) is located. The fixed body includes a pair of arm parts 94 that protrude and face each other in the circumferential direction, and a leg part 92 that protrudes from the end of the plate part 91 in the first direction toward the side where the support part 20 (fixed body side support part) is located. 6 includes a metal case 50 that surrounds the outer peripheral side of the movable body 4. The gimbal frame receiving member 17 (fixed body side gimbal frame receiving member) has a pair of arm portions 94 and leg portions 92 fixed to the outer peripheral surface of the case 50 and is held at a position where the second axis R2 passes through the center of the sphere 15. , the support part 20 (fixed body side support part) is arranged between the plate part 91 and the case 50 in the second axial direction.

The fixed body connection mechanism 12 of this embodiment connects the fixed body 6 and the gimbal frame by bringing the sphere 15 provided on the gimbal frame receiving member 17 into point contact with the concave curved surface 19 provided on the support portion 20 of the gimbal frame 10. 10 can be connected. Here, the gimbal frame receiving member 17 includes a plate portion 91 to which the sphere 15 is fixed, and a pair of arm portions 94 and leg portions 92 that protrude from the plate portion 91 and are fixed to the outer peripheral surface of the case 50. The support portion 20 is arranged between the plate portion 91 and the case 50 in the second axial direction. Therefore, the support portion 20 can be held between the gimbal frame receiving member 17 and the case 50, and the gimbal frame 10 can be prevented from coming off. Furthermore, since the gimbal frame receiving member 17 is directly fixed to the metal case 50, the case 50 can be made thinner than when a holding portion for holding the gimbal frame receiving member 17 is formed in a resin member. can. Therefore, it is possible to downsize the optical unit with a shake correction function. Furthermore, since the fixed body connection mechanism 12 is made of metal parts, it is possible to prevent or suppress the generation of foreign matter (contamination) due to collision between the gimbal frame 10 and the resin parts.

In the fixed body connection mechanism 12 of this embodiment, the support section 20 is disposed between the arm section 94 and the leg section 92 in the optical axis direction, and the circumferential width dimension H1 of the support section 20 is the width of the pair of arm sections 94. It is larger than the circumferential interval H3. Therefore, the pair of arm portions 94 can prevent the support portion 20 from coming off.

The gimbal frame 10 of this embodiment includes a second gimbal frame extending portion 72 extending in the optical axis direction via between the pair of arm portions 94 . The second gimbal frame extension part 72 includes the support part 20 at the tip in the -Z direction (first direction), and is located between the pair of arm parts 94 in the +Z direction (second direction) of the support part 20. The case 50 includes a passage portion 84, and the case 50 includes a cutout portion 14 that is cut out at a position on the second axis R2 of the edge in the +Z direction (second direction). Therefore, since the first extension part 85 of the second gimbal frame extension part 72 of the second gimbal frame extension part 72 can be arranged in the notch 14, the structure in which the fixed body connection mechanism 12 is arranged on the outer peripheral surface of the case 50 is achieved. Even in this case, interference between the second gimbal frame extension portion 72 and the case 50 can be avoided.

In the fixed body connection mechanism 12 of this embodiment, a pair of arm portions 94 and leg portions 92 of the gimbal frame receiving member 17 are welded to the case 50. Therefore, the fixing strength can be increased compared to the case of fixing with an adhesive. Additionally, assembly time can be reduced.

The gimbal mechanism 5 of this embodiment includes a gimbal frame 10 and a movable body connection mechanism 11 that rotatably connects the gimbal frame 10 and the movable body 4 around a first axis R1. The movable body connection mechanism 11 contacts the sphere 15 on the gimbal frame 10 with a gimbal frame receiving member 17 (movable body side gimbal frame receiving member) comprising a sphere 15 and a metal thrust receiving member 16 to which the sphere 15 is fixed. A support portion 20 (movable body side support portion) having a concave curved surface 19 is provided. The camera module 3 includes a metal housing 32, and the gimbal frame receiving member 17 (movable body side gimbal frame receiving member) has a pair of arm portions 94 and a leg portion 92 fixed to the outer peripheral surface of the housing 32, and a spherical body 15. The support portion 20 (movable body side support portion) is held at a position through which the first axis R1 passes through the center, and is disposed between the plate portion 91 and the housing 32 in the first axis direction.

In this manner, in the present embodiment, also in the movable body connection mechanism 11, the gimbal frame receiving member 17 is directly fixed to the housing 32 of the camera module 3, and the gimbal frame receiving member 17 is supported between the gimbal frame receiving member 17 and the housing 32 of the camera module 3. 20. Therefore, it is possible to prevent the gimbal frame 10 from coming off. Furthermore, since the movable body 4 can be made smaller, the optical unit with a shake correction function can be made smaller. Furthermore, since the movable body connection mechanism 11 is made of metal parts, it is possible to suppress the generation of foreign matter due to collision between the gimbal frame 10 and the resin parts. In addition, since the movable body connection mechanism 11 also uses the same gimbal frame support member 17 as the gimbal frame support member 17 used in the fixed body connection mechanism 12, the fixed body connection mechanism 12 and the movable body connection mechanism 11 are It is possible to standardize the information.

In the movable body connection mechanism 11 of this embodiment, like the fixed body connection mechanism 12, the pair of arm portions 94 and leg portions 92 of the gimbal frame receiving member 17 are welded to the case 50. Therefore, the fixing strength can be increased compared to the case of fixing with an adhesive. Additionally, assembly time can be reduced.

In the movable body connection mechanism 11 of this embodiment, the support part 20 is arranged between the arm part 94 and the leg part 92 of the gimbal frame receiving member 17 in the optical axis direction, and the width of the support part 20 in the circumferential direction is This is larger than the circumferential spacing of the arm portions 94 . Therefore, the pair of arm portions 94 can prevent the support portion 20 from coming off.

In the movable body connection mechanism 11 and the fixed body connection mechanism 12 of the present embodiment, the support portion 20 (the movable body side support portion and the fixed body side support portion) includes a convex portion 21 in which a concave curved surface 19 is formed and a convex portion 21 formed in the convex portion 21, respectively. It includes an edge 22 extending to both sides in the circumferential direction, and the edge 22 is formed in a concentric circle shape with the convex portion 21 as the center. In this way, by providing the concentric edge 22, even if the gimbal frame 10 is assembled tilted around the second axis R2 or the first axis R1, the protrusion dimension of the edge 22 in the circumferential direction can be reduced. It does not change. Therefore, it is possible to prevent the support part 20 (fixed body side support part) from coming off from the thrust receiving member 16 due to the tilting of the gimbal frame 10 around the second axis R2, and also to prevent the gimbal frame 10 from tilting around the first axis R1. It is possible to prevent the support portion 20 (movable body side support portion) from coming off from the thrust receiving member 16 due to the tilting.

(Modified example)
In the above embodiment, the movable body connection mechanism 11 is configured by fixing the gimbal frame receiving member 17 directly to the housing 32 of the camera module 3. However, in the present invention, the movable body connects the camera module 3 and the camera module 3. It can be applied to a configuration including a metal holder surrounding the outer circumference. For example, in the modified movable body connection mechanism, the gimbal frame receiving member 17 (movable body side gimbal frame receiving member) is formed on the outer periphery of a metal holder in which a pair of arms 94 and leg portions 92 surround the outer periphery of the camera module 3. It is fixed to a surface and held at a position where the first axis R1 passes through the center of the sphere 15. The support portion 20 (movable body side support portion) is arranged between the plate portion 91 and the holder in the first axial direction.

In the modified example of the movable body connection mechanism 11, the arm portions 94 and leg portions 92 of the gimbal frame receiving member 17 (movable body side gimbal frame receiving member) are directly fixed to a metal holder. The support part 20 (movable body side support part) can be held between the body side gimbal frame receiving member) and the holder. Therefore, similarly to the above embodiment, it is possible to prevent the gimbal frame 10 from coming off. Furthermore, the holder can be made thinner than in the case where a holding portion for holding the gimbal frame receiving member 17 (movable body side gimbal frame receiving member) is formed in a resin member. Therefore, it is possible to downsize the optical unit with a shake correction function. Furthermore, since the support part 20 (movable body side support part) of the gimbal frame 10 is held between the metal holder and the thrust receiving member 16, foreign matter (contamination) is generated due to collision between the gimbal frame 10 and the resin parts. can be restrained from doing so. Furthermore, the fixed body connection mechanism 12 and the movable body connection mechanism 11 can use common parts.

Also in this case, the pair of arms 94 and legs 92 of the gimbal frame receiving member 17 (movable body side gimbal frame receiving member) can be welded to the holder. Therefore, the fixing strength can be increased compared to the case of fixing with an adhesive. Additionally, assembly time can be reduced.

DESCRIPTION OF SYMBOLS 1... Optical unit with shake correction function, 2... Lens, 3... Camera module, 4... Movable body, 5... Gimbal mechanism, 6... Fixed body, 7... Drive mechanism for shake correction, 7X... First magnetic drive mechanism, 7Y ...Second magnetic drive mechanism, 8...First cover, 9...Second cover, 10...Gimbal frame, 11...Movable body connection mechanism, 12...Fixed body connection mechanism, 14...Notch, 15...Sphere, 16... Thrust receiving member, 17... Gimbal frame receiving member, 19... Concave curved surface, 20... Support part, 21... Convex part, 22... Edge, 25X, 25Y... Magnet, 26X, 26Y... Coil, 30... Projection, 31... Holder, 32... Body part, 33... Lens barrel part, 34... Substrate, 35... First side plate part, 36... Second side plate part, 37... Third side plate part, 38... Fourth side plate part, 39... Fifth side plate. Part, 40...Sixth side plate part, 41...Seventh side plate part, 42...Eighth side plate part, 50...Case, 51...First frame part, 52...Second frame part, 53...Third frame part, 54... Fourth frame part, 55... First inclined frame part, 56... Second inclined frame part, 57... Third inclined frame part, 58... Coil arrangement hole, 60... Flexible printed circuit board, 61... First board part, 62... Second board portion, 64... Magnetic plate, 65... Magnetic sensor, 70... Gimbal frame main body, 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, 90... Sphere fixing part, 91... Plate part, 92... Foot part, 94... Arm part, 95... Projecting plate part , 96... Extension plate part, 97... Foot protruding plate part, 98... Foot extension plate part, 99... Foot passage part, H1... Circumferential width of support part, H2... Circumferential width of passage part Width, H3... Circumferential distance between the pair of arms, L... Optical axis, R1... First axis, R2... Second axis

Claims (10)

a movable body including a camera module;
The movable body is supported to be swingable about a first axis that intersects with the optical axis of the camera module, and the movable body is swingable about a second axis that intersects with the optical axis and the first axis. a supporting gimbal mechanism;
a fixed body that supports the movable body via the gimbal mechanism;
The gimbal mechanism includes a gimbal frame and a fixed body connection mechanism that rotatably connects the gimbal frame and the fixed body around the second axis,
The fixed body connection mechanism includes a fixed body side gimbal frame receiving member including a sphere and a metal thrust receiving member to which the sphere is fixed, and a fixed body side support part having a concave curved surface that contacts the sphere in the gimbal frame. Equipped with
A direction along the optical axis is an optical axis direction, one of the optical axis directions is a first direction, the other optical axis direction is a second direction, a circumference around the optical axis is a circumferential direction, and the second axis When the direction along is taken as the second axis direction,
The thrust receiving member includes a spherical body fixing part to which the spherical body is fixed, and a plate part that faces the fixed body side supporting part in the second axial direction via the spherical body, and a plate part that is larger than the spherical fixing part of the plate part. a pair of arm portions that protrude from both ends of the circumferential direction in the second direction toward the side where the fixed body side support portion is located and face each other in the circumferential direction; and a pair of arm portions facing each other in the circumferential direction from both ends of the circumferential direction of the plate portion, and the fixed body side support from the end of the plate portion in the first direction. a foot portion protruding toward the side where the portion is located;
The fixed body includes a metal case surrounding the outer peripheral side of the movable body,
The fixed body side gimbal frame receiving member is held at a position where the pair of arm portions and the foot portion are fixed to the outer peripheral surface of the case and the second axis passes through the center of the spherical body,
The optical unit with a shake correction function, wherein the fixed body side support part is disposed between the plate part and the case in the second axis direction. The fixed body side support part is arranged between the arm part and the foot part in the optical axis direction,
2. The optical unit with shake correction function according to claim 1, wherein the circumferential width of the fixed body side support part is larger than the circumferential interval between the pair of arm parts. The gimbal frame includes a second gimbal frame extending portion extending in the optical axis direction via between the pair of arm portions,
The second gimbal frame extension part includes the fixed body side support part at the tip in the first direction, and has a passage part located between the pair of arm parts in the second direction of the fixed body side support part. Prepare,
3. The optical unit with a shake correction function according to claim 2, wherein the case includes a notch portion cut out at a position on the second axis of the edge in the second direction. 4. The optical unit with a shake correction function according to claim 1, wherein the pair of arm portions and the foot portion are welded to the case. The gimbal mechanism includes a movable body connection mechanism that rotatably connects the gimbal frame and the movable body about the first axis,
The movable body connection mechanism includes a movable body side gimbal frame receiving member including the sphere and the thrust receiving member made of metal to which the sphere is fixed, and a movable body side support portion having a concave curved surface that contacts the sphere in the gimbal frame. and,
The movable body includes a metal holder surrounding the outer peripheral side of the camera module,
The movable body side gimbal frame receiving member is held at a position where the pair of arm portions and the foot portion are fixed to the outer peripheral surface of the holder and the first axis passes through the center of the spherical body,
The optical unit with a shake correction function according to any one of claims 1 to 4, wherein the movable body side support part is arranged between the plate part and the holder in the first axis direction. . 6. The optical unit with shake correction function according to claim 5, wherein the pair of arm portions and the foot portion are welded to the holder. The gimbal mechanism includes a movable body connection mechanism that rotatably connects the gimbal frame and the movable body about the first axis,
The movable body connection mechanism includes a movable body side gimbal frame receiving member including the sphere and the thrust receiving member made of metal to which the sphere is fixed, and a movable body side support portion having a concave curved surface that contacts the sphere in the gimbal frame. and,
The camera module includes a metal housing,
The movable body side gimbal frame receiving member is held at a position where the pair of arm portions and the foot portion are fixed to the outer peripheral surface of the housing and the first axis passes through the center of the spherical body,
The optical unit with a shake correction function according to any one of claims 1 to 4, wherein the movable body side support part is arranged between the plate part and the housing in the first axis direction. . 8. The optical unit with shake correction function according to claim 7, wherein the pair of arm portions and the foot portion are welded to the housing. The movable body side support part is arranged between the arm part and the foot part of the movable body side gimbal frame receiving member in the optical axis direction,
The optical system with a shake correction function according to any one of claims 5 to 8, wherein the circumferential width of the movable body side support part is larger than the circumferential interval between the pair of arm parts. unit. The movable body side support portion and the fixed body side support portion each include a convex portion in which the concave curved surface is formed, and an edge extending from the convex portion to both sides in the circumferential direction,
The optical unit with a shake correction function according to any one of claims 5 to 9, wherein the edge portion is formed in a concentric circle shape with the convex portion as the center.

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