JP2016057544A - Tremor correction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tremor correction device that can facilitate a control, can simplify a device configuration, enables miniaturization, and is less in friction.SOLUTION: A tremor correction device (10) comprises: a fixed member (4); a movable member (2) that has a lens (1) arranged; an X-drive mechanism 8x that drives the movable member in an X-axis direction relative to the movable member, and a Y-drive mechanism 8y that drives the movable member in a Y-axis direction thereto; and a coupling member that has one end engaged rotatably with the movable member and movably in the X-axis direction thereto, and has other end engaged rotatably with the movable member. When the movable member is driven in the Y-axis direction relative to the fixed member, an engagement part where the movable member and one end of the coupling member are rotatably engaged parallely moves in the Y-axis direction and the coupling member rotates centering around the engagement part relative to the fixed member.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a camera shake correction apparatus that corrects camera shake by driving a lens or an image pickup device (hereinafter sometimes collectively referred to as an optical device).

  In general, a digital camera includes a shake correction device that drives a lens and an image sensor in the X-axis direction and the Y-axis direction orthogonal to the optical axis for camera shake correction. As the shake correction device, for example, a movable member holding an optical element, a fixed member fixed to the optical axis, a drive device for driving the movable member in the X-axis direction and the Y-axis direction with respect to the fixed member, There is known a guide member that includes a guide member that guides the movement of the movable member relative to the fixed member, and a restriction member that restricts the movement of the movable member only in the X-axis direction and the Y-axis direction.

  By providing a restricting member and restricting the movement of the movable member only in the X-axis direction and the Y-axis direction, the rotation of the optical element around the optical axis can be restricted, and the position control of the optical element can be facilitated. .

JP 2010-271415 A JP 2006-113545 A

  However, the above-described conventional shake correction device requires a guide member that guides the movement of the movable member, and it is difficult to reduce the size of the device, and the amount of power consumption increases due to friction generated by the guide member and the regulating member.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a shake correction apparatus that can be easily controlled, can be simplified in apparatus configuration, can be downsized, and has little friction.

One aspect of the shake correction apparatus of the present invention includes a fixed portion, a movable portion in which an optical element is disposed, and the movable portion with respect to the fixed portion in the X-axis direction within a plane perpendicular to the optical axis of the optical element. And a drive unit that drives in the Y-axis direction perpendicular to the X-axis direction, and one end portion that can rotate with respect to the movable portion and that can move in the X-axis direction, and the other end portion that fits the fixed portion. A connecting member that is rotatably fitted to the movable portion, and the movable portion and one end of the connecting member when the movable portion is driven in the Y-axis direction with respect to the fixed portion by the driving portion. The fitting portion that is rotatably fitted to the portion moves in parallel in the Y-axis direction, and the connecting member rotates with respect to the fixed portion around the fitting portion.
Further, according to one aspect of the shake correcting apparatus of the present invention, a shaft member is fixed to the connecting member along the X-axis direction, the shaft member is rotatable with respect to the movable part, and the X It is slidably fitted along the axial direction.
Further, according to one aspect of the shake correcting apparatus of the present invention, the connecting member is rotatable with one end of the connecting member, and the one end of the connecting member is slidably fitted along the X-axis direction. A shaft member is included.
Further, according to one aspect of the shake correcting apparatus of the present invention, the fixed portion is provided with concave portions into which the other end portion of the connecting member is fitted on both sides of the other end portion and along the X-axis direction. In addition, a plurality of convex portions that are fitted to the concave portions are provided on both sides of the other end portion of the connecting member.
Further, according to one aspect of the shake correction apparatus of the present invention, the fixed portion is provided with a convex portion that fits the other end of the connecting member on both sides of the other end along the X-axis direction. In addition, a plurality of concave portions that are fitted to the convex portions are provided on both sides of the other end portion of the connecting member.
According to another aspect of the camera shake correction apparatus of the present invention, the movable unit is positioned relative to the fixed unit in a plane perpendicular to the optical axis of the optical element. A drive unit that drives in the X-axis direction and a Y-axis direction perpendicular to the X-axis direction, and a first fitting that fits so that one end portion thereof is rotatable with respect to the movable unit and is movable in the X-axis direction. A coupling member having a mating portion and a second fitting portion whose other end portion is rotatably fitted to the fixed portion, wherein the first fitting portion is a first shaft. The first shaft member is in a direction perpendicular to the axial direction of the first shaft member when the movable portion is moved in the Y-axis direction with respect to the fixed portion by the drive unit. The second fitting part moves, and the second fitting part rotates with respect to the fixed part that rotates around the first fitting part.
Further, according to one aspect of the shake correcting apparatus of the present invention, the second shaft member that is fitted to the other end portion of the connecting member so as to be rotatable with respect to the fixed portion in parallel with the first shaft member. Is fixed.
According to another aspect of the shake correcting apparatus of the present invention, the fixing member is formed with a concave portion for supporting the second shaft member.
According to another aspect of the shake correction apparatus of the present invention, the fixing member is formed with a groove, a hole, or a notch, and the connecting member is disposed in the groove, the hole, or the notch. It is characterized by that.

  ADVANTAGE OF THE INVENTION According to this invention, control can be made easy, the apparatus structure can be simplified, a miniaturization is possible, and the shake correction apparatus with little friction can be provided.

FIG. 1 is an external perspective view showing a digital camera according to an embodiment. FIG. 2 is an external perspective view showing a shake correction apparatus incorporated in the digital camera of FIG. FIG. 3 is a perspective view showing a state in which the yoke and the frame of the shake correction apparatus of FIG. 2 are removed. 4 is a cross-sectional view taken along F4-F4 in FIG. FIG. 5 is a cross-sectional view taken along F5-F5 of FIG. 6 is a front view of the fixed member of the shake correction apparatus of FIG. 2 as viewed from the movable member side. FIG. 7 is a partially enlarged view in which a main part of the fixing member in FIG. 6 is partially enlarged. FIG. 8 is an external perspective view showing a connecting member of the shake correction apparatus of FIG. FIG. 9 is a view for explaining the operation of the connecting member of the shake correction apparatus of FIG. FIG. 10 is a diagram for explaining the operation of the connecting member of the shake correction apparatus of FIG. FIG. 11 is a diagram for explaining the operation of the connecting member of the shake correction apparatus of FIG. FIG. 12 is a diagram for explaining the operation of the connecting member of the shake correction apparatus of FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view of a camera 100 equipped with a shake correction apparatus 10 (FIG. 2) according to an embodiment of the present invention.

  In the following description, the direction from the digital camera 100 (hereinafter simply referred to as the camera 100) toward the subject (not shown) is referred to as the front, and the opposite is referred to as the rear. In addition, an axis extending in the front-rear direction that coincides with the optical axis O of the lens unit 110 is a Z-axis, and two axes that are orthogonal to each other on a plane orthogonal to the Z-axis are an X-axis and a Y-axis. In particular, in a state where the camera 100 is arranged in the posture of FIG. 1, the horizontal direction is the X-axis direction, and the vertical direction is the Y-axis direction.

  The camera 100 includes a casing 102 that forms an outline thereof, and includes a lens unit 110 that is retracted with respect to the casing 102 in front of the casing 102. As described above, the camera 100 according to the present embodiment includes the lens unit 110 that is retracted with respect to the housing 102. However, the camera 100 includes a lens unit that is replaceable with respect to the camera body. Can also be applied.

  An imaging element 104 having a flat light receiving surface is provided in the housing 102. The imaging element 104 is fixedly disposed at a position where the light receiving surface is orthogonal to the optical axis O of the lens unit 110 and the optical axis O passes through the center of the light receiving surface. As the image sensor 104, for example, a CCD (charge coupled device) or a CMOS (complementary metal oxide semiconductor) sensor can be used. The image sensor 104 outputs an electrical signal corresponding to light incident through the lens unit 110.

In addition, a shake correction apparatus 10 is provided in the housing 102. The shake correction apparatus 10 is disposed between the lens unit 110 and the image sensor 104.
2 is a perspective view of the camera shake correction device 10 as seen from the subject side (oblique front) of the camera 100. FIG. 3 shows a state where the yoke 11 and the frame 12 are removed from the camera shake correction device 10 of FIG. Show. 4 is a cross-sectional view of the shake correction apparatus 10 cut along F4-F4 of FIG. 3, and FIG. 5 is a cross-sectional view of the shake correction apparatus 10 cut along F5-F5 of FIG. is there. The shake correction apparatus 10 of the present embodiment is different from the above-described conventional apparatus in that it does not include a guide member that guides the movement of the movable member 2 with respect to the fixed member 4.

  The shake correction apparatus 10 includes a movable member 2 (movable portion) that holds a lens 1 that is an example of an optical element, a fixed member 4 (fixed portion) that is fixed with respect to the optical axis O of the lens unit 110, and a movable member. And a connecting member 6, which is movably connected to the fixing member 4. Further, the shake correction device 10 includes an X drive mechanism 8x that moves the movable member 2 in the X-axis direction orthogonal to the optical axis O with respect to the fixed member 4, and an optical axis O with respect to the fixed member 4. And a Y drive mechanism 8y that moves in the direction of the orthogonal Y-axis. The X drive mechanism 8x and the Y drive mechanism 8y function as a drive unit. The flexible cable 9 is pulled out from the X drive mechanism 8x and the Y drive mechanism 8y.

  The center axis of the lens 1 is attached coaxially with a lens frame 28 described later of the movable member 2. The central axis of the lens 1 overlaps the optical axis O in a state where the movable member 2 is disposed at the center position along the XY plane. In the present embodiment, the lens 1 includes two convex lenses 1a and 1b (FIG. 5), but the number and types of lenses are not limited to this. In this embodiment, the lens 1 is attached to the movable member 2 as an example of an optical element. However, the image pickup element 104 is attached to the movable member 2 and the image pickup element 104 is moved with respect to the fixed system of the camera 100. You may make it correct camera shake.

  The movable member 2 has two holding portions 21 and 22 for holding a movable side shaft 61 of the connecting member 6 which will be described later. The two holding portions 21 and 22 function as fitting portions that translate in the Y-axis direction together with the movable shaft 61. The two holding portions 21 and 22 are spaced apart from each other in the X-axis direction and have holding holes 21a and 22a that pass coaxially in the X-axis direction. The holding holes 21a and 22a receive the shaft 61 of the connecting member 6 so as to be rotatable and slidable. More specifically, the holding holes 21a, 22a have a diameter with little play between the shaft 61, and the inner surface is precisely shaped so that the shaft 61 can be received without backlash and can be rotated and slid freely. Has been.

  Further, the movable member 2 is fixedly provided with a coil 81x of the X drive mechanism 8x and a coil 81y of the Y drive mechanism 8y. The movable member 2 integrally includes two elongated protrusions 23 and 24 that protrude forward from the centers of the coils 81x and 81y. The protrusion 23 at the center of the coil 81x extends in the Y-axis direction. The protrusion 24 at the center of the coil 81y extends in the X-axis direction.

  In addition, the movable member 2 integrally has three hooks 25, 26, and 27 for attaching one ends of three springs 3 a, 3 b, and 3 c that are stretched between the movable member 2 and the fixed member 4. Near each hook 25, 26, 27, three balls (not shown) are arranged between the movable member 2 and the fixed member 4. These three balls are pressed and sandwiched between the movable member 2 and the fixed member 4 by the pulling force of the three springs 3 a, 3 b, 3 c laid between the movable member 2 and the fixed member 4. Thereby, the movable member 2 can be moved along the XY plane with respect to the fixed member 4.

  Further, a substantially cylindrical lens frame 28 that holds the lens 1 is integrally provided at the center of the movable member 2. As a matter of course, the lens frame 28 is open at both ends in the axial direction, and holds the two convex lenses 1a and 1b along the axial direction.

  As shown in FIG. 2, the yoke 11 and the frame 12 are attached to the front of the movable member 2 so as to surround the lens frame 28 in a partially overlapping manner. The yoke 11 and the frame 12 are fixed to the fixing member 4 using a plurality of screws 13. In other words, the movable member 2 is movable with respect to the fixed member 4, the yoke 11, and the frame 12. A hall element (not shown) for detecting a position along the XY plane of the movable member 2 with respect to the fixed member 4 is attached to the inner surface of the frame 12.

  FIG. 6 is a front view of the fixed member 4 as viewed from the movable member 2 side. The fixing member 4 integrally has four bosses 41, 42, 43, 44 protruding forward along the Z axis. These four bosses 41, 42, 43, 44 have a protruding height that exceeds the thickness of the movable member 2 in the Z-axis direction in a state where the movable member 2 is stacked on the fixed member 4 with the three balls described above interposed therebetween. Have

  Further, these four bosses 41, 42, 43, 44 are arranged at positions that do not contact the movable member 2 even when the movable member 2 moves along the XY plane. In other words, the movable member 2 has a shape that does not contact the bosses 41, 42, 43, 44 when moving along the XY plane.

  Further, screw holes 41a, 42a, 43a, and 44a for screwing the above-described screws 13 are provided in front end surfaces of the four bosses 41, 42, 43, and 44, respectively. That is, the yoke 11 and the frame 12 can be fastened and fixed to the fixing member 4 by inserting the screws 13 from the front of the yoke 11 and the frame 12 and screwing them into the screw holes 41a, 42a, 43a, 44a. it can. In this state, since the protruding height of the bosses 41, 42, 43, 44 exceeds the thickness of the movable member 2, the movable member 2 does not contact the inner surface of the yoke 11 and the frame 12.

  In addition, protrusions 41b and 43b for positioning the yoke 11 are provided on the end surfaces of the two bosses 41 and 43, respectively. On the inner surface of the yoke 11, two holes (not shown) that receive these two protrusions 41b and 43b are provided.

  Further, a groove 42 b for attaching the plate-like stopper 14 is formed on the end surface of the boss 42. The depth of the groove 42b slightly exceeds the thickness of the stopper 14. The stopper 14 has a screw hole 14a coaxial with the screw hole 42a. That is, when the stopper 14 is disposed in the groove 42 b, the frame 12 is overlaid on the end surface of the boss 42, and the frame 12 is fastened and fixed to the boss 42 with the screw 13. Fixed. The stopper 14 functions to regulate movement in the Z-axis direction by contacting a part of the movable member 2 when the movable member 2 is about to move forward.

  As described above, the movable member 2 is not in contact with the yoke 11 and the frame 12 in a state where the yoke 11 and the frame 12 are fixed to the fixed member 4. In this state, when the movable member 2 moves in the Z-axis direction, the two protrusions 23 and 24 described above come into contact with the back surface of the yoke 11 to prevent the coils 81x and 81y from contacting the yoke 11.

  The fixed member 4 includes two magnets 82x and 82y that face the two coils 81x and 81y fixed to the movable member 2, respectively. The magnet 82x constitutes an X drive mechanism 8x together with the coil 81x and the yoke 11. The magnet 82y constitutes the Y drive mechanism 8y together with the coil 81y and the yoke 11. The X drive mechanism 8x is a voice coil motor (VCM) that moves the movable member 2 in the X-axis direction with respect to the fixed member 4, and the Y drive mechanism 8y is the Y-axis direction with respect to the fixed member 4. It is a voice coil motor (VCM) to be moved.

  That is, the magnet 82x of the X drive mechanism 8x is polarized in the X-axis direction, and the magnet 82y of the Y drive mechanism 8y is polarized in the Y-axis direction. In other words, when the coil 81x is energized, the magnet 82x is attached to the fixed member 4 in such a direction as to apply an electromagnetic force in the direction of moving the movable member 2 along the X axis. The magnet 82y is attached to the fixed member 4 in such a direction as to apply an electromagnetic force in the direction of moving the movable member 2 along the Y axis when the coil 81y is energized.

  The fixing member 4 includes three hooks 45, 46, and 47 that hook the other ends of the above-described springs 3a, 3b, and 3c, respectively. Each hook 45, 46, 47 faces the three hooks 25, 26, 27 of the movable member 2, respectively. The three springs 3a, 3b, and 3c are installed in a state where they are slightly stretched between the hooks 25, 26, and 27 on the movable member 2 side and the hooks 45, 46, and 47 on the fixed member 4 side.

  Furthermore, the fixing member 4 is provided with substantially rectangular recesses 51, 52, and 53 for receiving the above-described three balls (not shown) near the hooks 45, 46, and 47, respectively. On the inner surface of the movable member 2 on the fixed member 4 side, three substantially rectangular recesses (not shown) that face the three recesses 51, 52, and 53 are provided. A metal pad is provided on the bottom of each recess to prevent wear due to the sliding contact of the balls.

  FIG. 7 is a partially enlarged view in which the main part of the fixing member 4 is partially enlarged. The fixing member 4 has two holding grooves 48 and 49 (concave portions) that rotatably receive shafts 62 (convex portions) on the fixing side, which will be described later, of the connecting member 6. FIG. 7 is an enlarged view of one holding groove 48 facing one holding portion 21 of the movable member 2. The two holding grooves 48 and 49 have a substantially U-shaped cross-sectional shape that receives the shaft 62. The two holding grooves 48 and 49 each extend in the X-axis direction, and are provided coaxially apart from each other in the X-axis direction.

  Between the two holding grooves 48 and 49, an accommodation hole 50 (groove (hole) or notch) for receiving a part of the main body 60 of the connecting member 6 in a non-contact state is provided. In the present embodiment, the accommodation hole 50 penetrates the movable member 2. The size and shape of the accommodation hole 50 are designed such that the main body 60 of the connecting member 6 does not contact when the movable member 2 moves in the Y-axis direction with respect to the fixed member 4. In other words, the main body 60 of the connecting member 6 is formed in a size and shape that does not contact the fixed member 4 around the accommodation hole 50 even when the movable member 2 moves in the Y-axis direction.

  FIG. 8 is an external perspective view of the connecting member 6. The connecting member 6 includes two shafts 61 and 62 extending through the main body 60. The two shafts 61 and 62 are fixed to the main body 60 in parallel and spaced apart from each other. The two shafts 61 and 62 are each extended along the X axis in a state where the connecting member 6 is attached and the movable member 2 and the fixed member 4 are connected. That is, both ends of the movable shaft 61 are inserted into the holding holes 21 a and 22 a of the two holding portions 21 and 22 of the movable member 2, and both ends of the fixed shaft 62 are two holding grooves of the fixed member 4. 48, 49.

  The movable shaft 61 functions as a first fitting portion or a first shaft member. Further, the fixed-side shaft 62 functions as a second fitting portion or a second shaft member. In the present embodiment, the two shafts 61 and 62 are fixed to the main body 60, but the two shafts 61 and 62 may be integrally formed of the same material as the main body 60.

  The movable side end of the main body 60 includes notches 63 and 63 on both sides in the X-axis direction. That is, both ends of the movable shaft 61 are longer than the both ends of the fixed shaft 62 so as to protrude from the main body 60. The movable-side shaft 61 is slidably inserted in the X-axis direction with respect to the holding holes 21a and 22a of the holding portions 21 and 22 of the movable member 2, so that a margin for sliding is necessary. The protruding length is relatively long. In other words, the size of the two notches 63 and 63 is designed such that the main body 60 does not contact the movable member 2 when the connecting member 6 moves along the X axis. .

  It is desirable that the two shafts 61 and 62 are attached to the main body 60 as far as possible within the range allowed by the attachment space of the connecting member 6. That is, when the movable member 2 is moved in the Y-axis direction with respect to the fixed member 4, the connecting member 6 rotates in the Y-axis direction around the movable shaft 61 as will be described later. At this time, the fixed-side shaft 62 swings around the movable-side shaft 61 to draw an arc.

  In other words, the main body 60 of the connecting member 6 tilts in the Y-axis direction around the fixed-side shaft 62 as the movable-side shaft 61 moves in the Y-axis direction. At this time, if the movable member 2 is regarded as a fixed system, the shaft 62 swings, and the shaft 62 slightly moves in the Z-axis direction according to the radius of curvature of the arc drawn by the shaft 62. For this reason, the holding grooves 48 and 49 have such a depth that the shaft 62 is just in contact with the center of the swing of the shaft 62 (the state where the shaft 61 and the shaft 62 overlap in the Z-axis direction).

  In order to reduce the movement of the shaft 62 along the Z-axis direction, the radius of curvature of the arc drawn by the shaft 62 is desirably as large as possible, and the distance between the two shafts 61 and 62 is desirably as large as possible. . In the present embodiment, the holding grooves 48 and 49 for receiving the fixed-side shaft 62 are bottomed grooves. However, instead of the holding grooves 48 and 49, a slit that penetrates the fixing member 4 in the Z-axis direction may be provided. good. As a result, the shaft 62 can be moved to the surface of the fixing member 4 on the image sensor 104 side, and the distance between the shaft 61 and the shaft 62 can be maximized.

  On the other hand, as shown in FIG. 5, the movable-side shaft 61 is disposed near the subject-side surface along the thickness direction of the movable member 2, and is designed to maximize the distance between the shaft 61 and the shaft 62. Has been made. That is, the holding portions 21 and 22 of the movable member 2 are provided so as to protrude from the surface of the movable member 2 on the subject side, and hold the shaft 61 at a position as far as possible from the shaft 62.

  Further, it is desirable that the two shafts 61 and 62 of the connecting member 6 be as long as possible. That is, it is desirable that the holding portions 21 and 22 that hold both ends of the shaft 61 be as far apart as possible, and the holding grooves 48 and 49 that hold both ends of the shaft 62 are also as far apart as possible. The holding portions 21 and 22 hold the shaft 61 so as to be rotatable and slidable in the X-axis direction, and the holding grooves 48 and 49 hold the shaft 62 so as to be rotatable and slidable in the Z-direction. By separating the holding position of 62 as far as possible in the X-axis direction, the rotation of the axes 61 and 62 along the XY plane can be suppressed.

  As shown in FIG. 7, three belt-like curved convex portions 54, 55, and 56 are provided on the inner surface of the holding groove 48. The curved convex portions 54, 55, 56 have a shape in which the contour of the cross section forms an arc shape, and contact the shaft 62 at the apex thereof. For this reason, the contact area with respect to the outer peripheral surface (an end surface is included) of the axis | shaft 62 can be made as small as possible. That is, the plurality of curved convex portions 54, 55, and 56 reduce friction between the outer peripheral surface (including the end surface) of the shaft 62 and the inner surface of the holding groove 48, and reduce the friction between the shaft 62 and the holding groove 48. It works to eliminate the play between. The other holding groove 49 is similarly provided with a plurality of curved convex portions, but a duplicate description is omitted here.

  The curved convex portion 56 is provided on the end surface of the holding groove 48 on the outer side in the X-axis direction, and extends in the Z-axis direction. The curved convex portion 56 abuts on one end of the shaft 62 and restricts the movement of the shaft 62 in the X-axis direction. That is, the distance between the apex of the curved convex portion 56 of the holding groove 48 and the apex of the curved convex portion of the other holding groove 49 is designed to be substantially the same as the length of the shaft 62. For this reason, the shaft 62 on the fixed side of the connecting member 6 does not move in the X-axis direction.

  The curved convex portions 54 and 55 are provided on the inner surface of the side wall of the holding groove 48 so as to face each other. The curved convex portions 54 and 55 are also extended in the Z-axis direction. These curved convex portions 54 and 55 abut on the outer peripheral surface of the shaft 62 and function to restrict movement of the rotation center of the shaft 62 in the Y-axis direction. That is, the distance between the vertex of the curved convex portion 54 and the vertex of the curved convex portion 55 is designed to be approximately the same length as the diameter of the shaft 62.

  As described above, the three curved convex portions 54, 55, and 56 are each extended in the Z-axis direction so that the shaft 62 can always be held without play even if the shaft 62 moves in the Z-axis direction. It has become. That is, the holding grooves 48 and 49 hold both ends of the shaft 62 so as to be rotatable in the Y-axis direction, restrict the movement of the shaft 62 in the X-axis direction, and prevent the movement of the shaft 62 in the Z-axis direction. While permitting, the shaft 62 can be held without play.

The operation of the connecting member 6 having the above structure will be described below with reference to FIGS.
9 to 12 are partially enlarged views of the main part of FIG. 5, and the two shafts 61 and 62 of the connecting member 6 are arranged on the YZ plane at the positions of one holding part 21 and holding groove 48. It is sectional drawing cut | disconnected along. FIG. 9 shows three states of the connecting member 6 (each state in FIGS. 10, 11, and 12) when the movable member 2 is moved in the Y-axis direction. In the state where the movable member 2 is arranged at the center position, the connecting member 6 is arranged in the state shown in FIG. In this state, the two shafts 61 and 62 of the connecting member 6 face each other in the Z-axis direction.

  When the movable member 2 is moved along the Y-axis with respect to the fixed member 4, the movable-side shaft 61 of the connecting member 6 moves straight in the Y-axis direction in parallel with the XY plane. FIG. 11 shows a state where the movable member 2 is moved most upward in FIG. 5, and FIG. 12 shows a state where the movable member 2 is moved most downward in FIG. At this time, the main body 60 (not shown here) of the connecting member 6 swings around the shaft 62 on the fixed side of the connecting member 6.

  However, since the movable-side shaft 61 moves straight along the XY plane in the Y-axis direction, both ends of the fixed-side shaft 62 move slightly along the holding grooves 48 and 49 in the Z-axis direction. Thus, when both ends of the shaft 62 move in the Z-axis direction along the holding grooves 48, 49, the curved convex portions 54, 55, 56 provided on the inner surfaces of the holding grooves 48, 49 are the outer peripheral surfaces of the shaft 62. Slidably contact (including the end face). Thus, the shaft 62 can be rotated and the shaft 62 can be moved in the Z-axis direction with almost no play or friction between the shaft 62 and the holding grooves 48 and 49.

  Note that when the movable member 2 is moved in the X-axis direction with respect to the fixed member 4, the movable-side shaft 61 of the connecting member 6 slides along the holding holes 21 a and 22 a of the holding portions 21 and 22. At this time, the movement of the fixed-side shaft 62 is restricted by the two curved convex portions 56 and 56 at both ends of the holding grooves 48 and 49, and the connecting member 6 moves in the X-axis direction with respect to the fixed member 4. Is prevented.

  As described above, according to the present embodiment, when the movable member 2 moves in the Y-axis direction, the movable-side shaft 61 of the connecting member 6 is rotatably held by the holding portions 21 and 22 of the movable member 2. At the same time, the fixed-side shaft 62 is held by the two holding grooves 48 and 49 of the fixed member 4 so as to be rotatable and movable in the Z-axis direction. Therefore, in particular, the friction between the shaft 62 of the connecting member 6 and the holding grooves 48 and 49 can be reduced, and the position control of the movable member 2 along the Y-axis direction can be facilitated.

  Further, when the movable member 2 is moved in the X-axis direction, the movable-side shaft 61 slides in the X-axis direction with respect to the two holding portions 21 and 22, so that drive control with low friction and low power consumption is achieved. Is possible. In addition, since there is almost no play between each axis of the connecting member 6 and its holding structure, the movable member 2 can be accurately only in the X-axis direction and the Y-axis direction with respect to the fixed member 4 without using the guide member. The drive control can be performed with high reliability.

  In particular, since the shake correction apparatus 10 of the present embodiment uses the connecting member 6 having a small number of parts and a simple configuration, the size of the apparatus can be reduced, the weight can be reduced, and the manufacturing cost of the apparatus can be reduced. Further, since the structure is simple, the assembly is easy, the work load required for the assembly can be reduced, and the assembly cost can be reduced.

  The present invention has been described above based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications and applications are possible within the scope of the gist of the present invention. is there.

  For example, in the above-described embodiment, the connecting member 6 in which the two magnets 61 and 62 are fixed to the main body 60 is used. However, instead of the shafts 61 and 62, a protrusion having the same shape is formed integrally with the main body 60. May be.

  DESCRIPTION OF SYMBOLS 1 ... Lens, 2 ... Movable member, 4 ... Fixed member, 6 ... Connection member, 8x ... X drive mechanism, 8y ... Y drive mechanism, 10 ... Shake correction apparatus, 21, 22 ... Holding part, 21a, 22a ... Holding hole 48, 49 ... holding groove, 50 ... receiving hole, 54, 55, 56 ... curved convex part, 60 ... main body, 61 ... movable side shaft, 62 ... fixed side shaft, 81x, 81y ... coil, 82x, 82y …magnet.

Claims (9)

A fixed part;
A movable part in which an optical element is arranged;
A drive unit that drives the movable unit with respect to the fixed unit in an X-axis direction and a Y-axis direction perpendicular to the X-axis direction in a plane perpendicular to the optical axis of the optical element;
A connecting member that has one end portion that is rotatable with respect to the movable portion and that is movable in the X-axis direction, and the other end portion that is rotatably fitted with respect to the fixed portion;
When the movable part is driven in the Y-axis direction with respect to the fixed part by the drive part, the fitting part in which the movable part and one end of the connecting member are rotatably fitted is the Y A shake correction apparatus characterized by moving in parallel in an axial direction and rotating the connecting member with respect to the fixed portion about the fitting portion.   A shaft member is fixed to the connecting member along the X-axis direction, and the shaft member is fitted to be slidable along the X-axis direction and rotatable relative to the movable part. The blur correction device according to claim 1, wherein:   2. The coupling member includes a shaft member that is rotatable with one end portion of the coupling member, and the one end portion of the coupling member is slidably fitted along the X-axis direction. Blur correction device.   The fixing portion is provided with a concave portion into which the other end portion of the connecting member is fitted along both sides of the other end portion and along the X-axis direction, and the concave portion is formed on both sides of the other end portion of the connecting member. The blur correction device according to claim 1, wherein a plurality of convex portions that are fitted to the portion are provided.   The fixing portion is provided with a convex portion that fits the other end portion of the connecting member along the X-axis direction on both sides of the other end portion, and the convex portion is provided on both sides of the other end portion of the connecting member. The blur correction device according to claim 1, wherein a plurality of concave portions that are fitted to the shape portions are provided. A fixed part;
A movable part in which an optical element is arranged;
A drive unit that drives the movable unit in the X-axis direction and the Y-axis direction perpendicular to the X-axis direction with respect to the fixed unit in a plane perpendicular to the optical axis of the optical element;
A first fitting portion that has one end portion that is rotatable with respect to the movable portion and that is movable in the X-axis direction, and a second fitting portion in which the other end portion is rotatably fitted with respect to the fixed portion. A coupling member having two fitting portions,
The first fitting portion includes a first shaft member,
When the movable portion is moved in the Y-axis direction with respect to the fixed portion by the driving unit, the first shaft member moves in a direction perpendicular to the axial direction of the first shaft member, and The shake correction device according to claim 1, wherein the second fitting portion rotates with respect to the fixed portion that rotates about the first fitting portion.   The second shaft member, which is parallel to the first shaft member and is rotatably fitted to the fixed portion, is fixed to the other end portion of the connecting member. Blur correction device.   The shake correction apparatus according to claim 6, wherein the fixing member is formed with a concave portion for supporting the second shaft member.   The blur correction device according to claim 6, wherein the fixing member is formed with a groove, a hole, or a notch, and the connecting member is disposed in the groove, the hole, or the notch.

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