WO2020013081A1 - Imaging device - Google Patents
Imaging device Download PDFInfo
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- WO2020013081A1 WO2020013081A1 PCT/JP2019/026715 JP2019026715W WO2020013081A1 WO 2020013081 A1 WO2020013081 A1 WO 2020013081A1 JP 2019026715 W JP2019026715 W JP 2019026715W WO 2020013081 A1 WO2020013081 A1 WO 2020013081A1
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- Prior art keywords
- movable
- unit
- imaging
- imaging device
- engaged
- Prior art date
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- 238000003384 imaging method Methods 0.000 title claims abstract description 92
- 230000003287 optical effect Effects 0.000 claims description 28
- 230000005484 gravity Effects 0.000 claims description 27
- 230000002093 peripheral effect Effects 0.000 description 24
- 210000000078 claw Anatomy 0.000 description 22
- 238000001514 detection method Methods 0.000 description 14
- 238000003780 insertion Methods 0.000 description 14
- 230000037431 insertion Effects 0.000 description 14
- 230000001133 acceleration Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
Definitions
- the present invention relates to an imaging device.
- an imaging apparatus that corrects camera shake by driving an image sensor when camera shake is detected (for example, see Patent Document 1).
- a mechanism for holding the imaging element at a predetermined position is provided.
- An imaging device includes a movable section on which an imaging element is arranged and movably provided, a first driving section for moving the movable section, and an opposite surface of the movable section on which the imaging element is arranged. A first position for engaging the engaged portion provided on the surface and restricting the movement of the movable portion, and a second position for not engaging the engaged portion and restricting the movement of the movable portion. And a second drive unit that moves the engagement unit between the first position and the second position.
- the image pickup apparatus of the present invention includes a movable section on which an image pickup device is arranged and movably provided, a first drive section for moving the movable section, and an engaged section provided on the movable section. At least three engagements movable between a first position in which the movable portion is restricted by engagement and a second position in which the movable portion is not engaged and does not restrict the movement of the movable portion. And a second drive unit that moves the engagement unit between the first position and the second position.
- the image pickup device of the present invention has an image pickup device, a movable portion provided to be movable in a direction parallel to an image pickup surface of the image pickup device with respect to a fixed portion, and the image pickup device of the movable portion being provided.
- the engaged portion provided on the surface opposite to the surface that has been pressed is pressed from a direction perpendicular to the imaging surface via an elastic member, and the movable portion moves in a direction parallel to the imaging surface due to frictional force.
- a restricting unit for restricting for restricting.
- the image pickup device of the present invention is arranged such that an image sensor is arranged, a movable portion provided to be movable in a direction parallel to an imaging surface of the image sensor with respect to a fixed portion, and the image sensor of the movable portion is arranged. And a restricting portion that restricts movement of the movable portion by pressing an engaged portion provided on a surface opposite to the surface on which the movable portion is provided, in a direction parallel to the imaging surface.
- FIG. 1 is a schematic diagram illustrating a camera 1 according to an embodiment and an interchangeable lens 2 that is detachable from the camera 1.
- FIG. 3 is a perspective view of the imaging unit 20 and a movement restriction mechanism 40 as viewed from an oblique front side.
- FIG. 3 is a perspective view of the imaging unit 20 and a movement restriction mechanism 40 as viewed from an oblique rear side. It is a rear view of the movable part 25.
- FIG. 3 is an enlarged view of an engaged portion and an engaging portion. It is a rear view of the fixing part 24. It is the perspective view which looked at the movement restricting mechanism 40 from the front diagonal. It is the perspective view which looked at the movement restricting mechanism 40 from the back diagonal.
- FIG. 3 is a perspective view of the imaging unit 20 and a movement restriction mechanism 40 as viewed from an oblique front side.
- FIG. 3 is a perspective view of the imaging unit 20 and a movement restriction mechanism 40 as viewed from an oblique rear side. It
- FIG. 4 is a perspective view of a cam plate 43. It is a flow chart explaining operation of control part 14 of camera 1 in a 2nd embodiment.
- FIG. 11 is an exploded perspective view of a movement restriction mechanism 140 according to a third embodiment as viewed obliquely from the front. It is the disassembled perspective view which looked at the movement restricting mechanism 140 of 3rd Embodiment from back diagonally.
- FIG. 14 is a rear view of the movement restriction mechanism 140 according to the third embodiment.
- FIG. 13 is a front view of a movement restriction mechanism 140 at a first position restricting movement of an engaged portion 28 in the third embodiment.
- FIG. 13 is a front view of a movement restriction mechanism 140 at a second position where the movement of the engaged portion 28 is not restricted in the third embodiment.
- FIG. 1 is a schematic diagram illustrating a camera 1 according to a first embodiment and an interchangeable lens 2 that is detachable from the camera 1.
- the camera 1 to which the interchangeable lens 2 is detachable will be described.
- the camera 1 may be a lens-integrated camera.
- the camera 1 includes an imaging unit 20 including an imaging element 23, a movement restriction mechanism 40 that restricts movement of the movable unit 25 including the imaging element 23 in the imaging unit 20, a release switch 11, a display unit 12, a blur detection sensor 13, a first drive unit 21, a position detection unit 22, a control unit 14, and an operation unit 15.
- the release switch 11 is a member for performing a shooting operation of the camera 1, and operates a shutter drive timing (not shown) and the like.
- the image pickup device 23 is provided on a predetermined focal plane of a photographing optical system of the interchangeable lens 2, and under the control of the control unit 14, performs photoelectric conversion of subject image light incident via the photographing optical system of the interchangeable lens 2 to generate a signal. Generate.
- the imaging element 23 is configured by, for example, a CCD, a CMOS, or the like.
- the display unit 12 is a color liquid crystal display that is provided on the back of the camera 1 and displays a captured subject image (still image, moving image including live view image), information (menu) related to operation, and the like.
- the shake detection sensor 13 detects a shake caused by a camera shake of the camera 1 by an acceleration sensor or an angular velocity sensor.
- the control unit 14 controls the imaging of the image sensor 23 by pressing the release switch 11. Further, the control unit 14 performs processing such as noise processing and A / D conversion on the signal output from the imaging element 23, generates image data, and displays the image data on the display unit 12. Further, the control unit 14 detects a target position of the image sensor 23 based on the shake signal of the image sensor 23 detected by the shake detection sensor 13. Then, the control unit 14 calculates a drive amount for correcting blurring of the image sensor 23 based on the detected target position, and drives the image sensor 23 via the first drive unit 21 based on the calculated drive amount. I do.
- FIG. 2 is a perspective view of the imaging unit 20 and the movement restricting mechanism 40 as viewed from a diagonally front side
- FIG. 3 is a perspective view of the imaging unit 20 and the movement restriction mechanism 40 as viewed from a diagonally rear side.
- an XY orthogonal coordinate system is provided as appropriate for easy explanation and understanding.
- the direction toward the left side as viewed from the photographer at the position (the normal position) of the camera 1 when the photographer photographs the horizontally long image with the optical axis OA being horizontal is defined as the X plus direction.
- the upward direction at the normal position is defined as the Y plus direction.
- the subject side in the optical axis OA direction is the front side
- the opposite side is the rear side
- the Y plus side is up
- the Y minus side is down
- the rear side is the back side.
- the imaging unit 20 includes the fixed unit 24, the movable unit 25 movable in the XY plane with respect to the fixed unit 24, and the first drive unit 21 and the position detection unit 22 illustrated in FIG. 1 described above.
- FIG. 4 is a rear view of the movable section 25.
- the movable section 25 includes a movable frame 26 that holds an outer peripheral portion on the back surface of the image sensor 23, and the image sensor 23 is mounted on the front surface of the movable frame 26.
- a movable side opening 26a is provided in a portion of the movable frame 26 located on the back side of the image sensor 23.
- Arms 27 extend inward from three locations on the inner edge of the movable side opening 26a.
- the arm portions 27 extend in a direction toward the center of gravity G of the movable portion 25, and each of the arm portions 27 is provided with an engaged portion 28 at the tip thereof.
- FIG. 5 is an enlarged view of the engaged portion 28 and an engaging portion 50 described later. As shown, the engaged portion 28 protrudes rearward from the tip of the arm 27 and abuts on the back surface.
- a surface 28a is provided.
- the three engaged portions 28 are arranged on a circumference S of the same diameter centered on the center of gravity G of the movable portion 25. That is, the engaged portion 28 is disposed around the center of gravity G of the movable portion 25, and the center of gravity G is shifted from the point A through which the optical axis OA, which is the imaging center of the imaging element 23, passes. .
- the fixing unit 24 includes a fixing frame 30 fixed to the housing of the camera 1.
- FIG. 6 is a rear view of the fixed frame 30 of the fixed portion 24 and the magnets 311, 312, and 313.
- the fixed frame 30 is provided with a fixed-side opening 24a.
- the fixed side opening 24a is located on the back side of the movable side opening 26a. As shown in FIG. 3, the engaged portion 28 is exposed to the rear through the fixed side opening 24a.
- the fixed frame 30 has a magnet 311 for driving in the X direction as a first driving unit 21 on the plus side in the X direction and a first driving unit 21 on the minus side (lower side) in the Y direction of the image sensor 23. 312 and 313 for driving in the Y direction and driving in the rotation direction are attached.
- a position detection unit 22 is provided in the imaging unit 20.
- the position detector 22 detects the position of the movable unit 25 with respect to the fixed unit 24.
- the position detection unit 22 is, for example, a hall element 22a attached to the movable unit 25 and a position detection magnet 22b attached to the fixed unit 24, but is not limited thereto, and a light emitting unit and a light receiving unit (PSD) ).
- First drive unit 21 As described above, the first drive unit 21 is provided on the coils 211, 212, 213 and the yoke 214 provided on the movable frame 26 shown in FIGS. 1 and 4, and on the fixed frame 30 shown in FIGS. 1 and 6.
- VCM voice coil motor
- the first driving unit 21 is disposed at three locations around the image sensor 23.
- the movable portion 25 and the fixed portion 24 are urged toward each other by a spring member via three balls (not shown), whereby the movable frame 26 is moved in the X-axis direction and the Y-axis direction with respect to the fixed frame 30. , Are supported so as to be movable in a rotation direction about the optical axis OA.
- the embodiment has the movement restriction mechanism 40 for fixing the movable portion 25 when the power is not supplied.
- the movement restricting mechanism 40 is arranged in a space on the back side of the imaging unit 20 in the housing of the camera 1 as described in FIGS.
- FIG. 7 is a perspective view of the movement restriction mechanism 40 as viewed obliquely from the front side
- FIG. 8 is a perspective view of the movement restriction mechanism 40 as viewed obliquely from the rear side.
- the movement restricting mechanism 40 includes, from the rear side, a base plate 41, a gear portion 42, a cam plate 43, a moving plate 47 having a holding spring 44 (first elastic member), and a biasing spring 45 (second elastic member). ) And a cover plate 46.
- the base plate 41 is a member that holds the gear portion 42, the cam plate 43, and the moving plate 47.
- a cam plate holding ring 41b provided on the outer periphery of the gear and a gear support shaft 41c provided outside the cam plate holding ring 41b extend from the front surface toward the front.
- a moving plate rotation stopper 41d similarly extends from the front surface toward the front side.
- the moving plate holding shaft 41a extends along an axis G1 which is a rotation center of the cam plate 43.
- the rotation shaft of the motor 49 extends in the Y direction, and a worm gear 49a is attached to the outer periphery of the rotation shaft.
- the entire motor 49 is located on the back side of the first drive unit 21.
- the present invention is not limited to this, and at least a part of the motor 49 may be located on the back side of the first driving unit 21.
- the gear portion 42 has a disk shape and is provided with gear teeth 42 a on the outer periphery, and is rotatably attached to a gear support shaft 41 c provided on the base plate 41.
- FIG. 8 is a perspective view of the cam plate 43.
- the cam plate 43 has an annular shape, and is fitted to the outer peripheral side of a cam plate holding ring 41b provided on the base plate 41 so as to be relatively rotatable.
- the cam plate 43 has cam gear teeth 43 a formed on a part of the outer periphery, and meshes with the gear teeth 42 a of the gear portion 42.
- slopes 43b provided by gradually changing the thickness in the direction of the optical axis OA are provided at three places at equal intervals in the circumferential direction.
- the moving plate 47 has a disk shape, and a moving plate holding shaft 41a provided on the base plate 41 is inserted into a hole provided at the center, and is attached to the base plate 41 so as to be able to move back and forth.
- Engaging portions 50 are formed outwardly from three equally spaced locations on the outer peripheral side of the moving plate 47.
- a U-shaped detent 47a extends outward from one position on the outer peripheral side of the moving plate 47.
- the relative rotation of the movable plate 47 with respect to the base plate 41 is prevented by the engagement between the rotation stopper 47a and the movable plate rotation stopper receiver 41d of the base plate 41.
- projections 47b projecting rearward are provided at three equally spaced locations on the same circumference having the same diameter as the inclined surface 43b of the cam plate 43.
- FIG. 5 described above is a diagram illustrating an engagement state between the engagement portion 50 and the engaged portion 28 provided on the movable frame 26.
- the engaging portion 50 is provided on the outer peripheral side of the moving plate 47.
- a concave portion 51 is formed which is concave toward the inside and concave toward the rear side.
- Each of the concave portions 51 has an outer peripheral surface 51a of a fixed length extending in the circumferential direction around the axis G1, and two inner surfaces 51b extending radially outward from both circumferential sides of the outer peripheral surface 51a. ing.
- the engaged portions 28 provided on the movable frame 26 have diameters from an inner peripheral surface 28b extending at a fixed length in the circumferential direction around the center of gravity G and from both sides of the inner peripheral surface 28b in the circumferential direction. And two outer surfaces 28c extending outward in the direction.
- the distance between the two outer surfaces 28c, that is, the circumferential width of the contact surface 28a (the engaged portion 28) is the distance between the two inner surfaces 51b of the recess 51, that is, the circumferential width of the recess 51. Greater than width.
- the diameter of the circumference of the engaging portion 50 where the outer peripheral surface 51a is formed is smaller than the diameter of the circumference of the engaged portion 28 where the inner peripheral surface 28b is formed.
- the engaging portion 50 moves forward, the outer peripheral surface 51a of the engaging portion 50 and the inner peripheral surface 28b of the engaged portion 28 face each other, and the inner surface 51b of the engaging portion 50 and the engaged portion
- the engaged portion 28 enters the concave portion 51 of the engaging portion 50 so that the outer surface 28c of the engaging portion 28 faces the outer surface 28c, between the opposed inner peripheral surface 28b and the outer peripheral surface 51a, and A gap is created between the opposed inner surface 51b and the outer surface 28c.
- the concave portion 51 is provided with a U-shaped (L-shaped) leaf spring member 52. Both ends 52a of the leaf spring member 52 are fixed to both sides of the concave portion 51 of the movable plate 47 with respect to the concave portion 51 on the inner diameter side.
- the central portion of the U-shape (L-shape) of the leaf spring member 52 enters the inside of the concave portion 51 and extends forward, and the tip is bent to form a pressing portion 52b.
- a cover plate 46 On the front side of the moving plate 47, a cover plate 46 is disposed with an urging spring 45 interposed therebetween.
- the cover plate 46 is fixed to the base plate 41.
- the movable plate 47 can move back and forth while being urged rearward by the urging spring 45.
- the engagement portion 50 of the movement restriction mechanism 40 is at the second position separated from the engaged portion 28. At this time, the engaging portion 50 does not engage with the engaged portion 28 and does not limit the movement of the movable portion 25 with respect to the fixed portion 24.
- the stepping motor 49 fixed to the base plate 41 rotates before the power supply is completely turned off.
- the worm gear 49a of the rotating shaft of the motor 49 meshes with the gear teeth 42a of the gear portion 42, and the rotational force of the motor 49 is transmitted to the gear portion 42, so that the gear portion 42 rotates.
- the engaging portion 50 moves forward, the outer peripheral surface 51a of the engaging portion 50 and the inner peripheral surface 28b of the engaged portion 28 face each other, and the inner surface 51b of the engaging portion 50 and the outer surface of the engaged portion 28
- the engaged portion 28 enters the inside of the concave portion 51 of the engaging portion 50 such that the side surface 28c is opposed to the side surface 28c. That is, the engaging portion 50 engages with the engaged portion 28 provided on the surface of the movable portion 25 opposite to the surface on which the image sensor 23 is arranged, and the position of the engaging portion 50 is The first position restricts movement with respect to the fixed portion 24.
- the pressing portion 52b of the leaf spring member 52 comes into contact with the engaged portion 28, and elastically holds the engaged portion 28, that is, the movable portion 25, in the optical axis OA direction.
- the engaged portion 28 enters the concave portion 51 of the engaging portion 50, the space between the opposed inner peripheral surface 28 b and the outer peripheral surface 51 a, and the opposed inner surface 51 b and the outer surface 28 c
- the movement of the engaged portion 28 in the XY plane is prevented by the frictional force of the leaf spring member 52 because there is a gap between them.
- the movement of the engaging portion 28 is restricted to the inside of the concave portion 51. Therefore, the engaged portion 28 is securely held without being excessively restrained by the engaging portion 50.
- the pressing portion 52b of the leaf spring member 52 comes into contact with the engaged portion 28, and the engaged portion 28, that is, the movable portion 25 is elastically held in the optical axis OA direction.
- the movable section 25 can be held in a state where the pressing in the OA direction is suppressed, and the movement of the movable section 25 in the optical axis OA direction can be suppressed. This makes it possible to maintain the position of the image sensor 23 in the direction of the optical axis OA with high accuracy while the movement of the movable part 25 including the image sensor 23 in the XY plane direction is restricted by the movement restricting mechanism 40.
- the movable portion 25 is engaged with the engaged portion 28 at three places on the back surface and the movement with respect to the fixed portion 24 is restricted, compared with the case where the movable portion 25 is held at one place, It is kept stable.
- the embodiment has been described in the form of holding at three places, the present invention is not limited to three places and may be three or more.
- the engaging portion 50 is driven back and forth by a motor 49.
- a worm gear is constituted by the worm gear 49 a of the rotating shaft of the motor 49 and the gear teeth 42 a of the gear portion 42, and the engaging portion 50 is engaged with the engaged portion 28 to form the movable portion 25.
- the projection 47b of the moving plate 47 is in contact with the top dead center (or bottom dead center) of the slope 43b of the cam plate 43. Therefore, even when the power is off, the movable section 25 including the imaging element 23 is fixed, so that the movable section 25 does not drop due to gravity or move due to the vibration of the portable device.
- the movable section 25 including the imaging element 23 can be held without consuming power.
- the movement limiting operation of the movable unit 25 may be performed not only when the main power is turned off but also such that the photographer can select and operate the operation unit 15. Further, the movement restriction operation of the movable unit 25 may be automatically performed depending on the shooting mode.
- the concave portion 51 is provided with the leaf spring member 52, and the pressing portion 52 b of the leaf spring member 52 comes into contact with the engaged portion 28 and friction between the pressing portion 52 b and the engaged portion 28. The configuration has been described in which a force is generated to limit the movement of the movable portion 25 provided with the engaged portion 28 in the XY plane.
- an inelastic member that comes into contact with the engaged portion 28 is provided at the end of the leaf spring member 52. It is good also as a structure provided. Even with such a configuration, the movable member 25 can be held in a state in which the elastic member bends and the pressing of the movable unit 25 in the optical axis OA direction is suppressed, and the movable unit 25 can be held in the optical axis OA direction. Can be suppressed. Accordingly, it is possible to maintain the position of the image sensor 23 in the optical axis OA direction with high accuracy in a state where the movement of the movable part 25 including the image sensor 23 in the XY plane direction is restricted by the movement restriction mechanism 40.
- the movement restriction mechanism 40 is disposed in the space on the back side of the imaging unit 20, the space on the back side of the imaging unit 20 can be effectively used. Therefore, since the internal space of the camera 1 can be effectively used, the size of the camera 1 can be reduced.
- the holding center when the holding center does not coincide with the center of gravity of the movable portion, a rotational moment is applied at the time of holding according to the separation distance between the holding center and the center of gravity of the movable portion. Retention may be required.
- the axis G ⁇ b> 1 passing through the holding center of the movement restricting mechanism 40 is disposed so as to pass through a position that substantially matches the center of gravity G. Therefore, the movable portion 25 is held at three points at substantially equal distances on the circumference around the center of gravity G of the movable portion 25.
- the holding center and the center of gravity G of the movable portion 25 are substantially coincident with each other, the holding force for pressing the movable portion 25 can be relatively small. In addition, the inclination of the movable portion 25 due to mechanical play (play) of each member can be reduced.
- the position of the engaged portion 28 with which the engaging portion 50 is engaged is set on the circumference centered on the center of gravity G of the movable portion 25, but is not strictly limited to the form centered on the center of gravity G. May be in the vicinity of the center of gravity G that is slightly shifted. For example, the position may be a position closer to the center of gravity G than the imaging center.
- the magnets 311, 312, and 313 are provided in the fixed unit 24, and the coils 211, 212, and 213 are provided in the movable unit 25.
- the present invention is not limited to this, and the magnet may be provided on the movable portion, and the coil may be provided on the fixed portion.
- the engaged portion 28 enters the concave portion 51 of the engaging portion 50, but the movement restricting mechanism is not limited to this, and may be another type.
- the camera 1 of the second embodiment also includes an imaging unit 20 including an imaging element 23 as shown in FIG. 1, a movement restriction mechanism 40 for the imaging element 23 in the imaging unit 20, a release switch 11, , Display unit 12, blur detection sensor 13, first drive unit 21, position detection unit 22, and control unit 14.
- the camera 1 has an acceleration sensor. Note that the acceleration sensor may be common to the shake detection sensor 13. Further, the movement restriction mechanism 40 of the second embodiment is not limited to the movement restriction mechanism 40 of the first embodiment, and may be another movement restriction mechanism 40. The position where the engaging portion 50 of the movement restricting mechanism 40 engages with the engaged portion 28 of the movable portion 25 is not limited to three, but may be two or one. A configuration that engages with the entire surface of the movable portion 25 may be used.
- FIG. 10 is a flowchart illustrating the operation of the control unit 14 of the camera 1 according to the second embodiment.
- the controller 14 detects that the object is a free fall (Step S2).
- the control unit 14 restricts the movement of the movable unit by the movement restriction mechanism (step S3).
- the movement of the movable part is restricted, so that the possibility that the movable part collides with another member and is damaged is reduced.
- the camera according to the third embodiment is the same as the camera 1 according to the first embodiment except for the movement restricting mechanism 140, and a description of the same parts will be omitted.
- FIG. 11 is an exploded perspective view of the movement restriction mechanism 140 as viewed obliquely from the front.
- FIG. 12 is an exploded perspective view of the movement restriction mechanism 140 as viewed obliquely from the rear.
- FIG. 13 is a rear view of the movement restriction mechanism 140.
- FIG. 14 is a front view of the movement restricting mechanism 140 at the first position restricting the movement of the engaged portion 28 (the movement of the movable portion 25 with respect to the fixed portion 24).
- FIG. 15 is a front view of the movement restricting mechanism 140 at the second position where the movement of the engaged portion 28 is not restricted.
- FIG. 16 is a perspective view of the movement restricting mechanism 140 in the first state restricting the movement of the engaged portion 28 as viewed from the front side.
- FIG. 17 is a perspective view of the movement restricting mechanism 140 in the second state in which the movement of the engaged portion 28 is not restricted, as viewed from the front side.
- the movement restricting mechanism 140 is disposed on the base plate 141, the rotating plate 143 disposed on the rear side of the base plate 141, the gear part 142 disposed on the side of the base plate 141, and the front surface of the base plate 141. And a holding member 144.
- the base plate 141 has a substantially rectangular plate shape, as shown in FIGS. 12 and 13, a circular rotating plate holding recess 141b on the rear surface, a rotating plate holding shaft 141a extending rearward from the center of the rotating plate holding recess 141b, and a rotating plate.
- a gear holding recess 141d provided outside the holding recess 141b and a gear support shaft 141c extending rearward from the gear holding recess 141d are provided.
- the rotating plate holding shaft 141a extends along the axis G1, and the axis G1 is disposed so as to pass through a position substantially coincident with the center of gravity G of the movable portion 25.
- three pin insertion slots 141e are provided penetrating at three equally spaced positions on the circumference around the axis G1. Further, on the bottom surface of the rotary plate holding recess 141b, on the outer peripheral side of the three pin insertion slots 141e, three claw insertion slots 141f are provided at three equally spaced positions on the circumference around the axis G1. It is provided through.
- claw holding shafts 141i extending forward are provided at three equally spaced positions on the circumference around the axis G1.
- spring holding projections 141g are provided at three equally spaced positions on the circumference around the axis G1.
- a coil spring 141h is inserted into each of the spring holding protrusions 141g.
- a motor 149 serving as a second driving unit, which is an actuator, is fixed to the front surface of the base plate 141.
- the rotation shaft of the motor 149 extends in the Y direction, and a worm gear 149a is attached to the outer periphery of the rotation shaft.
- the gear portion 142 is provided with first gear teeth 142a on the rear side of the outer periphery and second gear teeth 142b on the front side of the outer periphery.
- the gear portion 142 has a disk shape and is rotatably attached to a gear support shaft 141c whose center is provided on the base plate 141.
- the worm gear 149a of the motor 149 meshes with the second gear teeth 142b.
- the rotating plate 143 has an annular shape, and an insertion hole 143 a provided at the center is inserted into the rotating plate holding shaft 141 a of the base plate 141 and held in the rotating plate holding recess 141 b of the base plate 141 so as to be relatively rotatable. ing.
- the rotating plate 143 has gear teeth 143b formed on a part of the outer periphery, and meshes with the first gear teeth 142a of the gear portion 142.
- First holding claws 143c extending radially outward are provided at three equally spaced locations on the outer periphery of the rotating plate 143.
- the first holding claw 143c includes a first holding surface 143d extending in the radial direction.
- the first holding claw 143c is inserted into a claw insertion slot 141f provided in the base plate 141, and moves in the claw insertion slot 141f in the circumferential direction by rotation of the rotating plate 143. Further, a pin member 143e extends forward from three equally spaced locations on the circumference centered on the axis G1 on the front surface of the rotating plate 143.
- the three holding members 144 are provided and have the same shape.
- the respective holding members 144 are arranged at equal intervals along the circumference around the axis G1.
- the holding member 144 includes a rotation center hole 144a, an arm 144b extending in a circumferential direction from a portion where the rotation center hole 144a is provided, and a second holding claw 144c extending radially outward from a tip end of the arm 144b.
- the claw holding shaft 141i of the base plate 141 is inserted into the rotation center hole 144a, and the holding member 144 is rotatable around the claw holding shaft 141i.
- a surface on the radially inner side of the arm portion 144b is a cam surface 144e.
- a pin member 143e provided on the rotary plate 143 penetrates the pin insertion slot 141e of the base plate 141 and is in contact with the cam surface 144e. Further, a spring engaging portion 144f is provided in a portion of the arm portion 144b opposite to the rotation center hole 144a. One end of a coil spring 141h attached to a spring holding projection 141g of the base plate 141 abuts against the spring engaging portion 144f, and the holding member 144 is turned around the rotation center hole 144a by the coil spring 141h in FIG. Energized clockwise.
- the second holding claw 144c is provided with a second holding surface 144d facing the rotation center hole 144a.
- the second holding surface 144d moves between a position retracted from the front side of the claw insertion slot 141f and a state in which it enters the front side of the claw insertion slot 141f.
- the pin member 143e is located on the rotation center hole 144a side of the cam surface 144e of the holding member 144.
- the spring engaging portion 144f is urged by the coil spring 141h, and is urged counterclockwise in the drawing around the rotation center hole 144a (claw holding shaft 141i), that is, in a direction in which the tip of the cam surface 144e approaches the axis 1G. ing.
- the second holding surface 144d is located at the second position retreated from the claw insertion long hole 141f, that is, separated from the engaged portion 28.
- the pressing portion 52b of the leaf spring member 52 comes into contact with the engaged portion 28, and the engaged portion 28, that is, the movable portion 25 is elastically held in the optical axis OA direction.
- the engaged portion 28, that is, the movable portion 25 is pressed by the holding member 144 from the direction of the XY plane orthogonal to the optical axis OA. Therefore, the movable section 25 can be held without being pressed in the direction of the optical axis OA, and the movement of the movable section 25 in the direction of the optical axis OA can be suppressed. This makes it possible to maintain the position of the image sensor 23 in the optical axis OA direction with high accuracy in a state where the movement of the movable part 25 including the image sensor 23 in the XY plane direction is restricted by the movement restricting mechanism 140.
- the movable portion 25 including the image sensor 23 is fixed even in the power-off state, so that the movable portion 25 does not fall due to gravity or move due to the vibration of carrying. Therefore, the movable section 25 including the imaging element 23 can be held without consuming power.
- the movement restriction mechanism 140 described in the third embodiment is disposed in the space on the back side of the imaging unit 20, so that the space on the back side of the imaging unit 20 can be effectively used. it can. Therefore, since the internal space of the camera 1 can be effectively used, the size of the camera 1 can be reduced.
- the holding center and the center of gravity G of the movable portion 25 substantially match, so that the holding force for pressing the movable portion 25 can be relatively small.
- the inclination of the movable portion 25 due to mechanical play (play) of each member can be reduced.
- the imaging element 23 when the imaging element 23 is pressed from the front side, the imaging surface cannot be blocked, so that it is difficult to hold a plurality of locations around the center of gravity G of the movable part 25.
- the third embodiment since it is pressed from the back side of the image sensor 23, it is possible to hold a plurality of points around the center of gravity G.
- the magnets 311, 312, 313 are provided in the fixed part 24, and the coils 211, 212, 213 are provided in the movable part 25.
- the present invention is not limited to this, and the magnet may be provided on the movable portion, and the coil may be provided on the fixed portion.
- the movable portion 25 includes the three engaged portions 28, and the three engaged portions 28 are respectively held by the holding members 144 from the direction of the XY plane orthogonal to the optical axis OA.
- the configuration has been described.
- the movable portion 25 may be provided with one engaged portion 28, and the one engaged portion 28 may be held by the holding member 144 from the direction of the XY plane. Even with such a configuration, it is possible to hold the movable portion 25 without pressing the movable portion 25 in the optical axis OA direction, and it is possible to suppress the movement of the movable portion 25 in the optical axis OA direction. It becomes possible. This makes it possible to maintain the position of the image sensor 23 in the direction of the optical axis OA with high accuracy.
- the configuration in which the engaged portion 28 provided on the movable portion 25 is sandwiched and held by the holding member 144 has been described.
- a concave engaged portion is provided on the movable portion 25 instead of the convex engaged portion, and a force is applied to the concave engaged portion from the inside by a holding member in the XY plane. It may be configured to hold down. Even with such a configuration, it is possible to hold the movable portion 25 without pressing the movable portion 25 in the optical axis OA direction, and it is possible to suppress the movement of the movable portion 25 in the optical axis OA direction. It becomes possible. This makes it possible to maintain the position of the image sensor 23 in the direction of the optical axis OA with high accuracy.
- G center of gravity
- G1 axis
- OA optical axis
- 1 camera
- 13 blur detection sensor
- 14 control unit
- 20 imaging unit
- 22a hole Element
- 22b magnet for position detection
- 24a fixed side opening
- 26a movable side opening
- 28a abutting surface
- 28b inner peripheral surface
- 28c outer surface
- 30 fixed frame
- 40 movement limiting mechanism
- 41a moving plate holding shaft
- 41b cam plate holding Ring
- 41c gear support shaft
- 41d receiver
- 42a gear teeth
- 43a cam gear teeth
- 43b slope
- 46b projection
- 47a Stopping
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Abstract
The present invention provides an imaging device that is capable of shake correction and does not readily break. This imaging device 1 comprises: a movable unit 25 on which an imaging element 23 is disposed and which is provided so as to be capable of moving; a first drive unit 21 for causing the movable unit 25 to move; an engagement unit 50 capable of moving to a first position, at which the engagement unit 50 engages with a unit 28 to be engaged that is provided on the side of the movable unit 25 opposite from the side on which the imaging element 23 is disposed and moreover at which the movement of the movable unit 25 is limited, and to a second position, at which the engagement unit 50 does not engage with the unit 28 to be engaged and moreover at which the movement of the movable unit 25 is not limited; and a second drive unit 49 for causing the engagement unit 50 to move between the first position and the second position.
Description
本発明は、撮像装置に関するものである。
<< The present invention relates to an imaging device.
従来、手ブレが検出された場合に、撮像素子を駆動することにより手ブレを補正する撮像装置が開示されている(例えば特許文献1参照)。この従来の撮像装置においては、撮像素子を所定位置に保持する機構が設けられている。
Conventionally, there has been disclosed an imaging apparatus that corrects camera shake by driving an image sensor when camera shake is detected (for example, see Patent Document 1). In this conventional imaging apparatus, a mechanism for holding the imaging element at a predetermined position is provided.
本発明の撮像装置は、撮像素子が配置され、移動可能に設けられた可動部と、前記可動部を移動させる第1の駆動部と、前記可動部の前記撮像素子が配置された面の反対の面に設けられた被係合部に係合して前記可動部の移動を制限する第1の位置と、前記被係合部に係合せず前記可動部の移動を制限しない第2の位置とで移動可能である係合部と、前記係合部を前記第1の位置と前記第2の位置との間で移動させる第2の駆動部と、を備える構成とした。
An imaging device according to the present invention includes a movable section on which an imaging element is arranged and movably provided, a first driving section for moving the movable section, and an opposite surface of the movable section on which the imaging element is arranged. A first position for engaging the engaged portion provided on the surface and restricting the movement of the movable portion, and a second position for not engaging the engaged portion and restricting the movement of the movable portion. And a second drive unit that moves the engagement unit between the first position and the second position.
また、本発明の撮像装置は、撮像素子が配置され、移動可能に設けられた可動部と、前記可動部を移動させる第1の駆動部と、前記可動部に設けられた被係合部に係合して前記可動部の移動を制限する第1の位置と、前記被係合部に係合せず前記可動部の移動を制限しない第2の位置とで移動可能である少なくとも3つの係合部と、前記係合部を前記第1の位置と前記第2の位置との間で移動させる第2の駆動部と、を備える構成とした。
Further, the image pickup apparatus of the present invention includes a movable section on which an image pickup device is arranged and movably provided, a first drive section for moving the movable section, and an engaged section provided on the movable section. At least three engagements movable between a first position in which the movable portion is restricted by engagement and a second position in which the movable portion is not engaged and does not restrict the movement of the movable portion. And a second drive unit that moves the engagement unit between the first position and the second position.
さらに、本発明の撮像装置は、撮像素子が配置され、固定部に対して前記撮像素子の撮像面と平行な方向に移動可能に設けられた可動部と、前記可動部の前記撮像素子が配置された面の反対の面に設けられた被係合部を、前記撮像面の垂直方向から弾性部材を介して押圧し、摩擦力により前記可動部の前記撮像面と平行な方向への移動を制限する制限部と、を備える構成とした。
Further, the image pickup device of the present invention has an image pickup device, a movable portion provided to be movable in a direction parallel to an image pickup surface of the image pickup device with respect to a fixed portion, and the image pickup device of the movable portion being provided. The engaged portion provided on the surface opposite to the surface that has been pressed is pressed from a direction perpendicular to the imaging surface via an elastic member, and the movable portion moves in a direction parallel to the imaging surface due to frictional force. And a restricting unit for restricting.
また、本発明の撮像装置は、撮像素子が配置され、固定部に対して前記撮像素子の撮像面と平行な方向に移動可能に設けられた可動部と、前記可動部の前記撮像素子が配置された面の反対の面に設けられた被係合部を、前記撮像面と平行な方向から押さえることにより前記可動部の移動を制限する制限部と、を備える構成とした。
Further, the image pickup device of the present invention is arranged such that an image sensor is arranged, a movable portion provided to be movable in a direction parallel to an imaging surface of the image sensor with respect to a fixed portion, and the image sensor of the movable portion is arranged. And a restricting portion that restricts movement of the movable portion by pressing an engaged portion provided on a surface opposite to the surface on which the movable portion is provided, in a direction parallel to the imaging surface.
(第1実施形態)
以下、図面等を参照して、撮像装置の第1実施形態としてのカメラ1について説明する。図1は、第1実施形態のカメラ1と、カメラ1に対して着脱可能な交換レンズ2とを示す概略図である。なお、第1実施形態では交換レンズ2が着脱可能なカメラ1について説明するが、カメラ1は、レンズ一体型のカメラであってもよい。 (1st Embodiment)
Hereinafter, acamera 1 as a first embodiment of an imaging device will be described with reference to the drawings and the like. FIG. 1 is a schematic diagram illustrating a camera 1 according to a first embodiment and an interchangeable lens 2 that is detachable from the camera 1. In the first embodiment, the camera 1 to which the interchangeable lens 2 is detachable will be described. However, the camera 1 may be a lens-integrated camera.
以下、図面等を参照して、撮像装置の第1実施形態としてのカメラ1について説明する。図1は、第1実施形態のカメラ1と、カメラ1に対して着脱可能な交換レンズ2とを示す概略図である。なお、第1実施形態では交換レンズ2が着脱可能なカメラ1について説明するが、カメラ1は、レンズ一体型のカメラであってもよい。 (1st Embodiment)
Hereinafter, a
(カメラ1)
カメラ1は、撮像素子23を備える撮像ユニット20と、撮像ユニット20における撮像素子23を含む可動部25の移動を制限する移動制限機構40と、レリーズスイッチ11と、表示部12と、ブレ検出センサ13と、第1の駆動部21と、位置検出部22と、制御部14と、操作部15とを備える。 (Camera 1)
Thecamera 1 includes an imaging unit 20 including an imaging element 23, a movement restriction mechanism 40 that restricts movement of the movable unit 25 including the imaging element 23 in the imaging unit 20, a release switch 11, a display unit 12, a blur detection sensor 13, a first drive unit 21, a position detection unit 22, a control unit 14, and an operation unit 15.
カメラ1は、撮像素子23を備える撮像ユニット20と、撮像ユニット20における撮像素子23を含む可動部25の移動を制限する移動制限機構40と、レリーズスイッチ11と、表示部12と、ブレ検出センサ13と、第1の駆動部21と、位置検出部22と、制御部14と、操作部15とを備える。 (Camera 1)
The
レリーズスイッチ11は、カメラ1の撮影操作を行う部材であって、図示しないシャッタの駆動のタイミング等を操作する。
The release switch 11 is a member for performing a shooting operation of the camera 1, and operates a shutter drive timing (not shown) and the like.
撮像素子23は交換レンズ2の撮影光学系の予定焦点面に設けられ、制御部14の制御に基づいて、交換レンズ2の撮影光学系を介して入射した被写体像光を光電変換して信号を生成する。撮像素子23は、例えばCCD、CMOS等により構成されている。
The image pickup device 23 is provided on a predetermined focal plane of a photographing optical system of the interchangeable lens 2, and under the control of the control unit 14, performs photoelectric conversion of subject image light incident via the photographing optical system of the interchangeable lens 2 to generate a signal. Generate. The imaging element 23 is configured by, for example, a CCD, a CMOS, or the like.
表示部12は、カメラ1の背面に設けられ、撮影された被写体像(静止画、ライブビュー画像を含む動画)や操作に関連した情報(メニュー)等を表示するカラー液晶ディスプレイである。
The display unit 12 is a color liquid crystal display that is provided on the back of the camera 1 and displays a captured subject image (still image, moving image including live view image), information (menu) related to operation, and the like.
ブレ検出センサ13は、加速度センサや角速度センサで、カメラ1の手ブレによるブレを検出する。
The shake detection sensor 13 detects a shake caused by a camera shake of the camera 1 by an acceleration sensor or an angular velocity sensor.
制御部14は、レリーズスイッチ11の押下により撮像素子23の撮影制御を行う。また、制御部14は、撮像素子23により出力された信号に対してノイズ処理やA/D変換等の処理を行い、画像データを生成し、表示部12に表示する。さらに制御部14は、ブレ検出センサ13により検出された撮像素子23のブレ信号を基に撮像素子23の目標位置を検出する。そして制御部14は、検出された目標位置に基づき撮像素子23のブレを補正する駆動量を演算し、演算された駆動量に基づいて、第1の駆動部21を介して撮像素子23を駆動する。
The control unit 14 controls the imaging of the image sensor 23 by pressing the release switch 11. Further, the control unit 14 performs processing such as noise processing and A / D conversion on the signal output from the imaging element 23, generates image data, and displays the image data on the display unit 12. Further, the control unit 14 detects a target position of the image sensor 23 based on the shake signal of the image sensor 23 detected by the shake detection sensor 13. Then, the control unit 14 calculates a drive amount for correcting blurring of the image sensor 23 based on the detected target position, and drives the image sensor 23 via the first drive unit 21 based on the calculated drive amount. I do.
(撮像ユニット20)
図2は、撮像ユニット20と移動制限機構40の斜め前側から見た斜視図であり、図3は、撮像ユニット20と移動制限機構40の斜め後側から見た斜視図である。
以下の図において、説明と理解を容易にするために、適宜XY直交座標系を設けた。この座標系では、撮影者が光軸OAを水平として横長の画像を撮影する場合のカメラ1の位置(正位置)において撮影者から見て左側に向かう方向をXプラス方向とする。また、正位置において上側に向かう方向をYプラス方向とする。また、光軸OA方向被写体側を前、逆側を後、Yプラス側を上、Yマイナス側を下、後側の面を背面として説明する。 (Imaging unit 20)
FIG. 2 is a perspective view of theimaging unit 20 and the movement restricting mechanism 40 as viewed from a diagonally front side, and FIG. 3 is a perspective view of the imaging unit 20 and the movement restriction mechanism 40 as viewed from a diagonally rear side.
In the following drawings, an XY orthogonal coordinate system is provided as appropriate for easy explanation and understanding. In this coordinate system, the direction toward the left side as viewed from the photographer at the position (the normal position) of thecamera 1 when the photographer photographs the horizontally long image with the optical axis OA being horizontal is defined as the X plus direction. In addition, the upward direction at the normal position is defined as the Y plus direction. In the following description, the subject side in the optical axis OA direction is the front side, the opposite side is the rear side, the Y plus side is up, the Y minus side is down, and the rear side is the back side.
図2は、撮像ユニット20と移動制限機構40の斜め前側から見た斜視図であり、図3は、撮像ユニット20と移動制限機構40の斜め後側から見た斜視図である。
以下の図において、説明と理解を容易にするために、適宜XY直交座標系を設けた。この座標系では、撮影者が光軸OAを水平として横長の画像を撮影する場合のカメラ1の位置(正位置)において撮影者から見て左側に向かう方向をXプラス方向とする。また、正位置において上側に向かう方向をYプラス方向とする。また、光軸OA方向被写体側を前、逆側を後、Yプラス側を上、Yマイナス側を下、後側の面を背面として説明する。 (Imaging unit 20)
FIG. 2 is a perspective view of the
In the following drawings, an XY orthogonal coordinate system is provided as appropriate for easy explanation and understanding. In this coordinate system, the direction toward the left side as viewed from the photographer at the position (the normal position) of the
撮像ユニット20は、固定部24と、固定部24に対してXY平面内で移動可能な可動部25と、上述した図1に示す第1の駆動部21及び位置検出部22と、を備える。
The imaging unit 20 includes the fixed unit 24, the movable unit 25 movable in the XY plane with respect to the fixed unit 24, and the first drive unit 21 and the position detection unit 22 illustrated in FIG. 1 described above.
(可動部25)
図4は可動部25の背面図である。可動部25は、撮像素子23の背面の外周部を保持する可動フレーム26を備え、可動フレーム26の前面に撮像素子23が取り付けられている。 (Movable part 25)
FIG. 4 is a rear view of themovable section 25. The movable section 25 includes a movable frame 26 that holds an outer peripheral portion on the back surface of the image sensor 23, and the image sensor 23 is mounted on the front surface of the movable frame 26.
図4は可動部25の背面図である。可動部25は、撮像素子23の背面の外周部を保持する可動フレーム26を備え、可動フレーム26の前面に撮像素子23が取り付けられている。 (Movable part 25)
FIG. 4 is a rear view of the
(可動フレーム26)
可動フレーム26における、図4で点線で外枠を示す撮像素子23のX方向プラス側には、第1の駆動部21としてのX方向駆動用のコイル211、撮像素子23のY方向マイナス側(下側)には、第1の駆動部21としてのY方向駆動用及び回転方向駆動用のコイル212,213が取り付けられている。また、可動フレーム26の前面には、ヨーク214が取り付けられている。 (Movable frame 26)
In themovable frame 26, on the plus side in the X direction of the image sensor 23 indicated by a dotted line in FIG. 4, the coil 211 for driving in the X direction as the first drive unit 21 and the minus side in the Y direction of the image sensor 23 ( On the lower side), coils 212 and 213 for driving in the Y direction and for driving in the rotation direction as the first driving unit 21 are attached. Further, a yoke 214 is attached to the front surface of the movable frame 26.
可動フレーム26における、図4で点線で外枠を示す撮像素子23のX方向プラス側には、第1の駆動部21としてのX方向駆動用のコイル211、撮像素子23のY方向マイナス側(下側)には、第1の駆動部21としてのY方向駆動用及び回転方向駆動用のコイル212,213が取り付けられている。また、可動フレーム26の前面には、ヨーク214が取り付けられている。 (Movable frame 26)
In the
(被係合部28)
可動フレーム26における、撮像素子23の背面側に位置する部分には可動側開口部26aが設けられている。可動側開口部26aの内縁の3か所から、それぞれ内側に向かって腕部27が延びている。腕部27は、可動部25の重心Gに向う方向に延び、腕部27の先端にはそれぞれ被係合部28が設けられている。
図5は、被係合部28と、後述する係合部50の拡大図であり、図示するように被係合部28は、腕部27の先端から、後側に突出し、背面に当接面28aが設けられている。 (Engaged part 28)
Amovable side opening 26a is provided in a portion of the movable frame 26 located on the back side of the image sensor 23. Arms 27 extend inward from three locations on the inner edge of the movable side opening 26a. The arm portions 27 extend in a direction toward the center of gravity G of the movable portion 25, and each of the arm portions 27 is provided with an engaged portion 28 at the tip thereof.
FIG. 5 is an enlarged view of the engagedportion 28 and an engaging portion 50 described later. As shown, the engaged portion 28 protrudes rearward from the tip of the arm 27 and abuts on the back surface. A surface 28a is provided.
可動フレーム26における、撮像素子23の背面側に位置する部分には可動側開口部26aが設けられている。可動側開口部26aの内縁の3か所から、それぞれ内側に向かって腕部27が延びている。腕部27は、可動部25の重心Gに向う方向に延び、腕部27の先端にはそれぞれ被係合部28が設けられている。
図5は、被係合部28と、後述する係合部50の拡大図であり、図示するように被係合部28は、腕部27の先端から、後側に突出し、背面に当接面28aが設けられている。 (Engaged part 28)
A
FIG. 5 is an enlarged view of the engaged
また、図4に示すように、3つの被係合部28は、可動部25の重心Gを中心とした同一径の円周S上に配置されている。すなわち、被係合部28は、可動部25の重心Gを中心として配置されており、重心Gは撮像素子23の撮像中心である光軸OAが通過する点Aとは、ずれた位置にある。
As shown in FIG. 4, the three engaged portions 28 are arranged on a circumference S of the same diameter centered on the center of gravity G of the movable portion 25. That is, the engaged portion 28 is disposed around the center of gravity G of the movable portion 25, and the center of gravity G is shifted from the point A through which the optical axis OA, which is the imaging center of the imaging element 23, passes. .
(固定部24)
固定部24はカメラ1の筐体に対して固定された固定フレーム30を備える。図6は固定部24の固定フレーム30及びマグネット311,312,313の背面図である。 (Fixing part 24)
The fixingunit 24 includes a fixing frame 30 fixed to the housing of the camera 1. FIG. 6 is a rear view of the fixed frame 30 of the fixed portion 24 and the magnets 311, 312, and 313.
固定部24はカメラ1の筐体に対して固定された固定フレーム30を備える。図6は固定部24の固定フレーム30及びマグネット311,312,313の背面図である。 (Fixing part 24)
The fixing
(固定フレーム30)
固定フレーム30には固定側開口部24aが設けられている。固定側開口部24aは可動側開口部26aの背面側に位置する。固定側開口部24aを介して図3に示すように被係合部28が後側に露出している。
固定フレーム30における、X方向プラス側には、第1の駆動部21としてのX方向駆動用のマグネット311、撮像素子23のY方向マイナス側(下側)には、第1の駆動部21としてのY方向駆動用及び回転方向駆動用の312,313が取り付けられている。 (Fixed frame 30)
The fixedframe 30 is provided with a fixed-side opening 24a. The fixed side opening 24a is located on the back side of the movable side opening 26a. As shown in FIG. 3, the engaged portion 28 is exposed to the rear through the fixed side opening 24a.
The fixedframe 30 has a magnet 311 for driving in the X direction as a first driving unit 21 on the plus side in the X direction and a first driving unit 21 on the minus side (lower side) in the Y direction of the image sensor 23. 312 and 313 for driving in the Y direction and driving in the rotation direction are attached.
固定フレーム30には固定側開口部24aが設けられている。固定側開口部24aは可動側開口部26aの背面側に位置する。固定側開口部24aを介して図3に示すように被係合部28が後側に露出している。
固定フレーム30における、X方向プラス側には、第1の駆動部21としてのX方向駆動用のマグネット311、撮像素子23のY方向マイナス側(下側)には、第1の駆動部21としてのY方向駆動用及び回転方向駆動用の312,313が取り付けられている。 (Fixed frame 30)
The fixed
The fixed
(位置検出部22)
図1に示すように撮像ユニット20には位置検出部22が設けられている。位置検出部22は、固定部24に対する可動部25の位置を検出する。本実施形態において位置検出部22は、例えば可動部25に取り付けられたホール素子22aと、固定部24に取り付けられた位置検出用マグネット22bであるが、これに限らず発光部と受光部(PSD)であってもよい。 (Position detector 22)
As shown in FIG. 1, aposition detection unit 22 is provided in the imaging unit 20. The position detector 22 detects the position of the movable unit 25 with respect to the fixed unit 24. In the present embodiment, the position detection unit 22 is, for example, a hall element 22a attached to the movable unit 25 and a position detection magnet 22b attached to the fixed unit 24, but is not limited thereto, and a light emitting unit and a light receiving unit (PSD) ).
図1に示すように撮像ユニット20には位置検出部22が設けられている。位置検出部22は、固定部24に対する可動部25の位置を検出する。本実施形態において位置検出部22は、例えば可動部25に取り付けられたホール素子22aと、固定部24に取り付けられた位置検出用マグネット22bであるが、これに限らず発光部と受光部(PSD)であってもよい。 (Position detector 22)
As shown in FIG. 1, a
(第1の駆動部21)
第1の駆動部21は、上述したように、図1及び図4に示す可動フレーム26に設けられたコイル211,212,213及びヨーク214と、図1及び図6に示す固定フレーム30に設けられたマグネット311,312,313とを備えるボイスコイルモータ(VCM)である。第1の駆動部21は、図4及び図6に示すように、撮像素子23の周囲の3か所に配置されている。 (First drive unit 21)
As described above, thefirst drive unit 21 is provided on the coils 211, 212, 213 and the yoke 214 provided on the movable frame 26 shown in FIGS. 1 and 4, and on the fixed frame 30 shown in FIGS. 1 and 6. A voice coil motor (VCM) including the magnets 311, 312, and 313 provided. As shown in FIGS. 4 and 6, the first driving unit 21 is disposed at three locations around the image sensor 23.
第1の駆動部21は、上述したように、図1及び図4に示す可動フレーム26に設けられたコイル211,212,213及びヨーク214と、図1及び図6に示す固定フレーム30に設けられたマグネット311,312,313とを備えるボイスコイルモータ(VCM)である。第1の駆動部21は、図4及び図6に示すように、撮像素子23の周囲の3か所に配置されている。 (First drive unit 21)
As described above, the
可動部25と固定部24とは、図示しない3つのボールを介して、バネ部材で互いに近づく方向に付勢され、これにより可動フレーム26は、固定フレーム30に対してX軸方向、Y軸方向、光軸OA回りの回転方向に移動可能に支持されている。
The movable portion 25 and the fixed portion 24 are urged toward each other by a spring member via three balls (not shown), whereby the movable frame 26 is moved in the X-axis direction and the Y-axis direction with respect to the fixed frame 30. , Are supported so as to be movable in a rotation direction about the optical axis OA.
コイル211,212,213に電流を流すと、電流の方向がマグネット311,312,313の磁力線に対して直交するコイル211,212,213の部分に電磁力が作用し、可動部25が固定部24に対して駆動される。
コイル211,212,213に流す電流の向きを逆転させると、可動部25は逆方向に駆動される。また、コイル211,212,213に流れる電流の大きさにより、可動部25に作用する力を変えることができる。 When a current flows through the coils 211, 212, and 213, an electromagnetic force acts on portions of the coils 211, 212, and 213 in which the direction of the current is orthogonal to the magnetic lines of force of the magnets 311, 312, and 313, and the movable unit 25 is 24.
When the direction of the current flowing through the coils 211, 212, and 213 is reversed, the movable section 25 is driven in the reverse direction. Further, the force acting on the movable portion 25 can be changed depending on the magnitude of the current flowing through the coils 211, 212, and 213.
コイル211,212,213に流す電流の向きを逆転させると、可動部25は逆方向に駆動される。また、コイル211,212,213に流れる電流の大きさにより、可動部25に作用する力を変えることができる。 When a current flows through the
When the direction of the current flowing through the
(移動制限機構40)
コイル211,212,213に電流が流れている状態では、可動部25のコイル211,212,213に作用する電磁力により、可動部25は所定位置に保持されている。しかし、コイル211,212,213への通電が停止されと、可動部25を保持する力がなくなる。そうすると、可動部25に外力が加わったときに、可動部25は簡単に動き、例えば、可動部25が重力によって下に落ちたり、カメラ1の持ち運び時において、可動部25が簡単に移動することにより物品同士が接触したりして、種々の部品が破損する可能性がある。 (Movement restriction mechanism 40)
When current is flowing through the coils 211, 212, and 213, the movable portion 25 is held at a predetermined position by electromagnetic force acting on the coils 211, 212, and 213 of the movable portion 25. However, when the power supply to the coils 211, 212, and 213 is stopped, the force for holding the movable portion 25 is lost. Then, when an external force is applied to the movable portion 25, the movable portion 25 moves easily. For example, the movable portion 25 falls down due to gravity, or the movable portion 25 moves easily when the camera 1 is carried. As a result, various parts may be damaged due to contact between articles.
コイル211,212,213に電流が流れている状態では、可動部25のコイル211,212,213に作用する電磁力により、可動部25は所定位置に保持されている。しかし、コイル211,212,213への通電が停止されと、可動部25を保持する力がなくなる。そうすると、可動部25に外力が加わったときに、可動部25は簡単に動き、例えば、可動部25が重力によって下に落ちたり、カメラ1の持ち運び時において、可動部25が簡単に移動することにより物品同士が接触したりして、種々の部品が破損する可能性がある。 (Movement restriction mechanism 40)
When current is flowing through the
このため、実施形態では、通電されていないときに可動部25を固定する移動制限機構40を有している。移動制限機構40は図1,2,3に記載のように、カメラ1の筐体内の撮像ユニット20の背面側のスペースに配置されている。図7は移動制限機構40を前側斜めから見た斜視図であり、図8は移動制限機構40を後側斜めから見た斜視図である。
Therefore, the embodiment has the movement restriction mechanism 40 for fixing the movable portion 25 when the power is not supplied. The movement restricting mechanism 40 is arranged in a space on the back side of the imaging unit 20 in the housing of the camera 1 as described in FIGS. FIG. 7 is a perspective view of the movement restriction mechanism 40 as viewed obliquely from the front side, and FIG. 8 is a perspective view of the movement restriction mechanism 40 as viewed obliquely from the rear side.
移動制限機構40は、後側から、ベース板41と、ギア部42と、カム板43と、押さえバネ44(第1弾性部材)を備える移動板47と、付勢バネ45(第2弾性部材)と、カバー板46と、を備える。
The movement restricting mechanism 40 includes, from the rear side, a base plate 41, a gear portion 42, a cam plate 43, a moving plate 47 having a holding spring 44 (first elastic member), and a biasing spring 45 (second elastic member). ) And a cover plate 46.
(ベース板41)
ベース板41は、ギア部42とカム板43と移動板47とを保持する部材で、移動板47を保持する移動板保持軸41aと、移動板保持軸41aと同心で、移動板保持軸41aの外周に設けられたカム板保持環41bと、カム板保持環41bの外側に設けられたギア支持軸41cとが、前面から前側に向って延びている。ベース板41の下部には、移動板回転止め受け41dが同様に前面から前側に向って延びている。移動板保持軸41aは、カム板43の回転中心となる軸線G1に沿って延びている。 (Base plate 41)
Thebase plate 41 is a member that holds the gear portion 42, the cam plate 43, and the moving plate 47. The moving plate holding shaft 41a that holds the moving plate 47, and the moving plate holding shaft 41a that is concentric with the moving plate holding shaft 41a. A cam plate holding ring 41b provided on the outer periphery of the gear and a gear support shaft 41c provided outside the cam plate holding ring 41b extend from the front surface toward the front. In the lower part of the base plate 41, a moving plate rotation stopper 41d similarly extends from the front surface toward the front side. The moving plate holding shaft 41a extends along an axis G1 which is a rotation center of the cam plate 43.
ベース板41は、ギア部42とカム板43と移動板47とを保持する部材で、移動板47を保持する移動板保持軸41aと、移動板保持軸41aと同心で、移動板保持軸41aの外周に設けられたカム板保持環41bと、カム板保持環41bの外側に設けられたギア支持軸41cとが、前面から前側に向って延びている。ベース板41の下部には、移動板回転止め受け41dが同様に前面から前側に向って延びている。移動板保持軸41aは、カム板43の回転中心となる軸線G1に沿って延びている。 (Base plate 41)
The
また、ベース板41のギア支持軸41cが設けられている側(Xマイナス側)には、第2の駆動部であって、アクチュエータであるモータ49が固定されている。モータ49の回転軸はY方向に延び、回転軸の外周にウォームギア49aが取り付けられている。
なお、実施形態では図2,3に示すように、モータ49は全体が第1の駆動部21の背面側に位置している。しかし、これに限らずモータ49の少なくとも一部が第1の駆動部21の背面側に位置していればよい。 On the side of thebase plate 41 where the gear support shaft 41c is provided (X minus side), a motor 49 serving as an actuator, which is a second driving unit, is fixed. The rotation shaft of the motor 49 extends in the Y direction, and a worm gear 49a is attached to the outer periphery of the rotation shaft.
In the embodiment, as shown in FIGS. 2 and 3, theentire motor 49 is located on the back side of the first drive unit 21. However, the present invention is not limited to this, and at least a part of the motor 49 may be located on the back side of the first driving unit 21.
なお、実施形態では図2,3に示すように、モータ49は全体が第1の駆動部21の背面側に位置している。しかし、これに限らずモータ49の少なくとも一部が第1の駆動部21の背面側に位置していればよい。 On the side of the
In the embodiment, as shown in FIGS. 2 and 3, the
(ギア部42)
ギア部42は、円板状で外周にギア歯42aが設けられており、ベース板41に設けられたギア支持軸41cに対して回転可能に取り付けられている。 (Gear part 42)
Thegear portion 42 has a disk shape and is provided with gear teeth 42 a on the outer periphery, and is rotatably attached to a gear support shaft 41 c provided on the base plate 41.
ギア部42は、円板状で外周にギア歯42aが設けられており、ベース板41に設けられたギア支持軸41cに対して回転可能に取り付けられている。 (Gear part 42)
The
(カム板43)
図8はカム板43の斜視図である。カム板43は円環状で、ベース板41に設けられたカム板保持環41bの外周側に相対回転可能に嵌め込まれている。
カム板43は外周の一部にカムギア歯43aが形成され、ギア部42のギア歯42aと噛み合っている。カム板43の前面には、光軸OA方向の厚みを徐々に変えることによって設けられた斜面43bが、円周方向に互いに等間隔の3か所に設けられている。 (Cam plate 43)
FIG. 8 is a perspective view of thecam plate 43. The cam plate 43 has an annular shape, and is fitted to the outer peripheral side of a cam plate holding ring 41b provided on the base plate 41 so as to be relatively rotatable.
Thecam plate 43 has cam gear teeth 43 a formed on a part of the outer periphery, and meshes with the gear teeth 42 a of the gear portion 42. On the front surface of the cam plate 43, slopes 43b provided by gradually changing the thickness in the direction of the optical axis OA are provided at three places at equal intervals in the circumferential direction.
図8はカム板43の斜視図である。カム板43は円環状で、ベース板41に設けられたカム板保持環41bの外周側に相対回転可能に嵌め込まれている。
カム板43は外周の一部にカムギア歯43aが形成され、ギア部42のギア歯42aと噛み合っている。カム板43の前面には、光軸OA方向の厚みを徐々に変えることによって設けられた斜面43bが、円周方向に互いに等間隔の3か所に設けられている。 (Cam plate 43)
FIG. 8 is a perspective view of the
The
(移動板47)
移動板47は円板状で、中央に設けられた穴に、ベース板41に設けられた移動板保持軸41aが挿入され、ベース板41に対して前後移動可能に取り付けられている。
移動板47の外周側の互いに等間隔の3か所から外側に向って係合部50が形成されている。
また、移動板47の外周側の1か所から外側に向って先端がU字形の回転止め47aが延びている。回転止め47aと、ベース板41の移動板回転止め受け41dとが係合することにより、移動板47のベース板41に対する相対回転が防止されている。
移動板47の背面には、後側に突出した突起47bが、カム板43の斜面43bと同径の同一円周上の互いに等間隔の3か所に設けられている。 (Moving plate 47)
The movingplate 47 has a disk shape, and a moving plate holding shaft 41a provided on the base plate 41 is inserted into a hole provided at the center, and is attached to the base plate 41 so as to be able to move back and forth.
Engagingportions 50 are formed outwardly from three equally spaced locations on the outer peripheral side of the moving plate 47.
AU-shaped detent 47a extends outward from one position on the outer peripheral side of the moving plate 47. The relative rotation of the movable plate 47 with respect to the base plate 41 is prevented by the engagement between the rotation stopper 47a and the movable plate rotation stopper receiver 41d of the base plate 41.
On the rear surface of themovable plate 47, projections 47b projecting rearward are provided at three equally spaced locations on the same circumference having the same diameter as the inclined surface 43b of the cam plate 43.
移動板47は円板状で、中央に設けられた穴に、ベース板41に設けられた移動板保持軸41aが挿入され、ベース板41に対して前後移動可能に取り付けられている。
移動板47の外周側の互いに等間隔の3か所から外側に向って係合部50が形成されている。
また、移動板47の外周側の1か所から外側に向って先端がU字形の回転止め47aが延びている。回転止め47aと、ベース板41の移動板回転止め受け41dとが係合することにより、移動板47のベース板41に対する相対回転が防止されている。
移動板47の背面には、後側に突出した突起47bが、カム板43の斜面43bと同径の同一円周上の互いに等間隔の3か所に設けられている。 (Moving plate 47)
The moving
Engaging
A
On the rear surface of the
(係合部50)
係合部50は、軸線G1を中心として、移動板47の外周側の互いに等間隔の3か所から外側に向って形成されている。上述の図5は、係合部50と、可動フレーム26に設けられた被係合部28との係合状態を示した図である。
係合部50は、移動板47の外周側に設けられている。移動板47の外周部において、内側に向かう方向に凹状かつ後側に向かう方向に凹状に形成された凹部51を備える。凹部51は、それぞれ、軸線G1を中心とした周方向に延びる一定長さの外周面51aと、外周面51aの周方向の両側から、径方向外側に延びる2つの内側面51bと、を有している。 (Engagement part 50)
Theengagement portions 50 are formed outward from three equally-spaced locations on the outer peripheral side of the movable plate 47 about the axis G1. FIG. 5 described above is a diagram illustrating an engagement state between the engagement portion 50 and the engaged portion 28 provided on the movable frame 26.
The engagingportion 50 is provided on the outer peripheral side of the moving plate 47. In the outer peripheral portion of the moving plate 47, a concave portion 51 is formed which is concave toward the inside and concave toward the rear side. Each of the concave portions 51 has an outer peripheral surface 51a of a fixed length extending in the circumferential direction around the axis G1, and two inner surfaces 51b extending radially outward from both circumferential sides of the outer peripheral surface 51a. ing.
係合部50は、軸線G1を中心として、移動板47の外周側の互いに等間隔の3か所から外側に向って形成されている。上述の図5は、係合部50と、可動フレーム26に設けられた被係合部28との係合状態を示した図である。
係合部50は、移動板47の外周側に設けられている。移動板47の外周部において、内側に向かう方向に凹状かつ後側に向かう方向に凹状に形成された凹部51を備える。凹部51は、それぞれ、軸線G1を中心とした周方向に延びる一定長さの外周面51aと、外周面51aの周方向の両側から、径方向外側に延びる2つの内側面51bと、を有している。 (Engagement part 50)
The
The engaging
一方、可動フレーム26に設けられた被係合部28は、それぞれ、重心Gを中心とした周方向に一定長さで延びる内周面28bと、内周面28bの周方向の両側から、径方向外側に延びる2つの外側面28cと、を有している。
On the other hand, the engaged portions 28 provided on the movable frame 26 have diameters from an inner peripheral surface 28b extending at a fixed length in the circumferential direction around the center of gravity G and from both sides of the inner peripheral surface 28b in the circumferential direction. And two outer surfaces 28c extending outward in the direction.
ここで、2つの外側面28c間の距離、すなわち当接面28a(被係合部28)の周方向の幅は、凹部51の2つの内側面51b間の距離、すなわち凹部51の周方向の幅よりも大きい。
また、係合部50における外周面51aが形成されている円周の径は、被係合部28における内周面28bが形成されている円周の径より小さい。 Here, the distance between the twoouter surfaces 28c, that is, the circumferential width of the contact surface 28a (the engaged portion 28) is the distance between the two inner surfaces 51b of the recess 51, that is, the circumferential width of the recess 51. Greater than width.
The diameter of the circumference of the engagingportion 50 where the outer peripheral surface 51a is formed is smaller than the diameter of the circumference of the engaged portion 28 where the inner peripheral surface 28b is formed.
また、係合部50における外周面51aが形成されている円周の径は、被係合部28における内周面28bが形成されている円周の径より小さい。 Here, the distance between the two
The diameter of the circumference of the engaging
したがって、係合部50が前進して、係合部50の外周面51aと、被係合部28の内周面28bとが対向し、係合部50の内側面51bと、被係合部28の外側面28cとが対向するようにして、係合部50の凹部51の中に、被係合部28が入り込んだときに、対向する内周面28bと外周面51aとの間、及び対向する内側面51bと外側面28cとの間に隙間が生じる。
Accordingly, the engaging portion 50 moves forward, the outer peripheral surface 51a of the engaging portion 50 and the inner peripheral surface 28b of the engaged portion 28 face each other, and the inner surface 51b of the engaging portion 50 and the engaged portion When the engaged portion 28 enters the concave portion 51 of the engaging portion 50 so that the outer surface 28c of the engaging portion 28 faces the outer surface 28c, between the opposed inner peripheral surface 28b and the outer peripheral surface 51a, and A gap is created between the opposed inner surface 51b and the outer surface 28c.
また、凹部51には、くの字形(L字形)の板バネ部材52が取り付けられている。
板バネ部材52の両端52aは、移動板47における凹部51よりも内径側の凹部51を挟んだ両側に固定されている。
板バネ部材52のくの字形(L字形)の中央部は、凹部51の内部に入って前側に延びており、先端が折れ曲がって押圧部52bが形成されている。 Theconcave portion 51 is provided with a U-shaped (L-shaped) leaf spring member 52.
Both ends 52a of theleaf spring member 52 are fixed to both sides of the concave portion 51 of the movable plate 47 with respect to the concave portion 51 on the inner diameter side.
The central portion of the U-shape (L-shape) of theleaf spring member 52 enters the inside of the concave portion 51 and extends forward, and the tip is bent to form a pressing portion 52b.
板バネ部材52の両端52aは、移動板47における凹部51よりも内径側の凹部51を挟んだ両側に固定されている。
板バネ部材52のくの字形(L字形)の中央部は、凹部51の内部に入って前側に延びており、先端が折れ曲がって押圧部52bが形成されている。 The
Both ends 52a of the
The central portion of the U-shape (L-shape) of the
(カバー板46)
移動板47の前側には、間に付勢バネ45を挟んでカバー板46が配置されている。カバー板46はベース板41に対して固定されている。移動板47は、付勢バネ45によって後側に付勢されつつ、前後移動が可能である。 (Cover plate 46)
On the front side of the movingplate 47, a cover plate 46 is disposed with an urging spring 45 interposed therebetween. The cover plate 46 is fixed to the base plate 41. The movable plate 47 can move back and forth while being urged rearward by the urging spring 45.
移動板47の前側には、間に付勢バネ45を挟んでカバー板46が配置されている。カバー板46はベース板41に対して固定されている。移動板47は、付勢バネ45によって後側に付勢されつつ、前後移動が可能である。 (Cover plate 46)
On the front side of the moving
(動作)
撮影時において、移動制限機構40の係合部50は、被係合部28から離間した第2の位置にある。このとき、係合部50は、被係合部28に係合せず可動部25の固定部24に対する移動を制限しない。
この状態で、例えば、カメラ1のメイン電源OFFが撮影者により選択されると、電源が完全にOFFになる前にベース板41に固定されたステッピングモータ49が回転する。
そうすると、モータ49の回転軸のウォームギア49aと、ギア部42のギア歯42aとが噛み合って、モータ49の回転力がギア部42に伝達されてギア部42が回転する。 (motion)
At the time of photographing, theengagement portion 50 of the movement restriction mechanism 40 is at the second position separated from the engaged portion 28. At this time, the engaging portion 50 does not engage with the engaged portion 28 and does not limit the movement of the movable portion 25 with respect to the fixed portion 24.
In this state, for example, if the main power supply of thecamera 1 is turned off by the photographer, the stepping motor 49 fixed to the base plate 41 rotates before the power supply is completely turned off.
Then, theworm gear 49a of the rotating shaft of the motor 49 meshes with the gear teeth 42a of the gear portion 42, and the rotational force of the motor 49 is transmitted to the gear portion 42, so that the gear portion 42 rotates.
撮影時において、移動制限機構40の係合部50は、被係合部28から離間した第2の位置にある。このとき、係合部50は、被係合部28に係合せず可動部25の固定部24に対する移動を制限しない。
この状態で、例えば、カメラ1のメイン電源OFFが撮影者により選択されると、電源が完全にOFFになる前にベース板41に固定されたステッピングモータ49が回転する。
そうすると、モータ49の回転軸のウォームギア49aと、ギア部42のギア歯42aとが噛み合って、モータ49の回転力がギア部42に伝達されてギア部42が回転する。 (motion)
At the time of photographing, the
In this state, for example, if the main power supply of the
Then, the
ギア部42が回転すると、カム板43のカムギア歯43aがギア部42と噛み合っているので、カム板43が回転する。
When the gear 42 rotates, the cam gear 43 rotates because the cam gear teeth 43a of the cam plate 43 mesh with the gear 42.
そうすると、移動板47の突起47bと当接しているカム板43の斜面43bの高さが変わるので、移動板47が斜面43bによって押されて前進する。
Then, since the height of the slope 43b of the cam plate 43 in contact with the projection 47b of the moving plate 47 changes, the moving plate 47 is pushed by the slope 43b and moves forward.
係合部50が前進すると、係合部50の外周面51aと、被係合部28の内周面28bとが対向し、係合部50の内側面51bと、被係合部28の外側面28cとが対向するようにして、係合部50の凹部51の内部に被係合部28が入り込む。
すなわち、係合部50は、可動部25の撮像素子23が配置された面の反対の面に設けられた被係合部28に係合し、係合部50の位置は、可動部25の固定部24に対する移動を制限する第1の位置となる。 When the engagingportion 50 moves forward, the outer peripheral surface 51a of the engaging portion 50 and the inner peripheral surface 28b of the engaged portion 28 face each other, and the inner surface 51b of the engaging portion 50 and the outer surface of the engaged portion 28 The engaged portion 28 enters the inside of the concave portion 51 of the engaging portion 50 such that the side surface 28c is opposed to the side surface 28c.
That is, the engagingportion 50 engages with the engaged portion 28 provided on the surface of the movable portion 25 opposite to the surface on which the image sensor 23 is arranged, and the position of the engaging portion 50 is The first position restricts movement with respect to the fixed portion 24.
すなわち、係合部50は、可動部25の撮像素子23が配置された面の反対の面に設けられた被係合部28に係合し、係合部50の位置は、可動部25の固定部24に対する移動を制限する第1の位置となる。 When the engaging
That is, the engaging
そのとき、板バネ部材52の押圧部52bが被係合部28と当接し、被係合部28、すなわち可動部25を光軸OA方向に弾性的に保持する。
ここで、係合部50の凹部51の中に、被係合部28が入り込んだときに、対向する内周面28bと外周面51aとの間、及び対向する内側面51bと外側面28cとの間に隙間があるので、被係合部28のXY平面内の移動は、板バネ部材52の摩擦力によって防止されている形であるが、摩擦力以上の力が加わった場合でも、被係合部28の移動は凹部51内に制限される。
ゆえに、被係合部28は係合部50によって過剰拘束されることなく、かつ確実に保持される。 At this time, thepressing portion 52b of the leaf spring member 52 comes into contact with the engaged portion 28, and elastically holds the engaged portion 28, that is, the movable portion 25, in the optical axis OA direction.
Here, when the engagedportion 28 enters the concave portion 51 of the engaging portion 50, the space between the opposed inner peripheral surface 28 b and the outer peripheral surface 51 a, and the opposed inner surface 51 b and the outer surface 28 c The movement of the engaged portion 28 in the XY plane is prevented by the frictional force of the leaf spring member 52 because there is a gap between them. The movement of the engaging portion 28 is restricted to the inside of the concave portion 51.
Therefore, the engagedportion 28 is securely held without being excessively restrained by the engaging portion 50.
ここで、係合部50の凹部51の中に、被係合部28が入り込んだときに、対向する内周面28bと外周面51aとの間、及び対向する内側面51bと外側面28cとの間に隙間があるので、被係合部28のXY平面内の移動は、板バネ部材52の摩擦力によって防止されている形であるが、摩擦力以上の力が加わった場合でも、被係合部28の移動は凹部51内に制限される。
ゆえに、被係合部28は係合部50によって過剰拘束されることなく、かつ確実に保持される。 At this time, the
Here, when the engaged
Therefore, the engaged
また、板バネ部材52の押圧部52bが被係合部28と当接し、被係合部28、すなわち可動部25を光軸OA方向に弾性的に保持することにより、可動部25の光軸OA方向への押圧を抑えた状態で可動部25の保持が可能であり、可動部25の光軸OA方向への移動を抑制することが可能となる。これにより、撮像素子23を含む可動部25のXY平面方向の移動を移動制限機構40により制限した状態における、撮像素子23の光軸OA方向の位置を高精度に保つことが可能となる。
Further, the pressing portion 52b of the leaf spring member 52 comes into contact with the engaged portion 28, and the engaged portion 28, that is, the movable portion 25 is elastically held in the optical axis OA direction. The movable section 25 can be held in a state where the pressing in the OA direction is suppressed, and the movement of the movable section 25 in the optical axis OA direction can be suppressed. This makes it possible to maintain the position of the image sensor 23 in the direction of the optical axis OA with high accuracy while the movement of the movable part 25 including the image sensor 23 in the XY plane direction is restricted by the movement restricting mechanism 40.
可動部25は、背面の3か所において被係合部28に係合部50が係合して、固定部24に対する移動が制限されるので、1か所で保持される場合と比べて、安定して保持される。
なお、実施形態では3か所で保持される形態について説明したが、3か所に限られず3以上であればよい。 Since themovable portion 25 is engaged with the engaged portion 28 at three places on the back surface and the movement with respect to the fixed portion 24 is restricted, compared with the case where the movable portion 25 is held at one place, It is kept stable.
Although the embodiment has been described in the form of holding at three places, the present invention is not limited to three places and may be three or more.
なお、実施形態では3か所で保持される形態について説明したが、3か所に限られず3以上であればよい。 Since the
Although the embodiment has been described in the form of holding at three places, the present invention is not limited to three places and may be three or more.
係合部50はモータ49によって前後に駆動される。ここで、モータ49の回転軸のウォームギア49aと、ギア部42のギア歯42aとでウォームギアを構成しており、また、被係合部28に係合部50が係合して可動部25の固定部24に対する移動が制限された状態において、移動板47の突起47bがカム板43の斜面43bの上死点(又は下死点)に当接している。
ゆえに、電源OFFの状態でも撮像素子23を含む可動部25が固定されるので、可動部25が重力により落下したり、持ち運びの振動により移動することがない。
したがって、電力を消費することなく、撮像素子23を含む可動部25を保持することができる。
なお、このように可動部25の移動制限動作は、メイン電源がOFFにされたときだけでなく、撮影者が操作部15より選択操作可能なようにしてもよい。また、撮影モードによって、自動的に可動部25の移動制限動作を行うようにしてもよい。
また、上述した実施形態では、凹部51に板バネ部材52を備え、板バネ部材52の押圧部52bが被係合部28と当接して押圧部52bと被係合部28との間に摩擦力を発生させ、被係合部28が備えられる可動部25のXY平面内の移動を制限する構成について説明した。これとは別に、例えば、板バネ部材52の先に被係合部28と当接する非弾性部材を設ける等、板バネ等の弾性部材を被係合部28と直接当接する箇所以外の場所に設ける構成としてもよい。このような構成であっても、弾性部材がたわむことにより可動部25の光軸OA方向への押圧を抑えた状態で可動部25の保持が可能であり、可動部25の光軸OA方向への移動を抑制することが可能となる。これにより、撮像素子23を含む可動部25のXY平面方向の移動を移動制限機構40により制限した状態における、撮像素子23の光軸OA方向の位置を高精度に保つことが可能となる。 The engagingportion 50 is driven back and forth by a motor 49. Here, a worm gear is constituted by the worm gear 49 a of the rotating shaft of the motor 49 and the gear teeth 42 a of the gear portion 42, and the engaging portion 50 is engaged with the engaged portion 28 to form the movable portion 25. In a state where the movement with respect to the fixed portion 24 is restricted, the projection 47b of the moving plate 47 is in contact with the top dead center (or bottom dead center) of the slope 43b of the cam plate 43.
Therefore, even when the power is off, themovable section 25 including the imaging element 23 is fixed, so that the movable section 25 does not drop due to gravity or move due to the vibration of the portable device.
Therefore, themovable section 25 including the imaging element 23 can be held without consuming power.
Note that the movement limiting operation of themovable unit 25 may be performed not only when the main power is turned off but also such that the photographer can select and operate the operation unit 15. Further, the movement restriction operation of the movable unit 25 may be automatically performed depending on the shooting mode.
Further, in the above-described embodiment, theconcave portion 51 is provided with the leaf spring member 52, and the pressing portion 52 b of the leaf spring member 52 comes into contact with the engaged portion 28 and friction between the pressing portion 52 b and the engaged portion 28. The configuration has been described in which a force is generated to limit the movement of the movable portion 25 provided with the engaged portion 28 in the XY plane. Separately from this, for example, an inelastic member that comes into contact with the engaged portion 28 is provided at the end of the leaf spring member 52. It is good also as a structure provided. Even with such a configuration, the movable member 25 can be held in a state in which the elastic member bends and the pressing of the movable unit 25 in the optical axis OA direction is suppressed, and the movable unit 25 can be held in the optical axis OA direction. Can be suppressed. Accordingly, it is possible to maintain the position of the image sensor 23 in the optical axis OA direction with high accuracy in a state where the movement of the movable part 25 including the image sensor 23 in the XY plane direction is restricted by the movement restriction mechanism 40.
ゆえに、電源OFFの状態でも撮像素子23を含む可動部25が固定されるので、可動部25が重力により落下したり、持ち運びの振動により移動することがない。
したがって、電力を消費することなく、撮像素子23を含む可動部25を保持することができる。
なお、このように可動部25の移動制限動作は、メイン電源がOFFにされたときだけでなく、撮影者が操作部15より選択操作可能なようにしてもよい。また、撮影モードによって、自動的に可動部25の移動制限動作を行うようにしてもよい。
また、上述した実施形態では、凹部51に板バネ部材52を備え、板バネ部材52の押圧部52bが被係合部28と当接して押圧部52bと被係合部28との間に摩擦力を発生させ、被係合部28が備えられる可動部25のXY平面内の移動を制限する構成について説明した。これとは別に、例えば、板バネ部材52の先に被係合部28と当接する非弾性部材を設ける等、板バネ等の弾性部材を被係合部28と直接当接する箇所以外の場所に設ける構成としてもよい。このような構成であっても、弾性部材がたわむことにより可動部25の光軸OA方向への押圧を抑えた状態で可動部25の保持が可能であり、可動部25の光軸OA方向への移動を抑制することが可能となる。これにより、撮像素子23を含む可動部25のXY平面方向の移動を移動制限機構40により制限した状態における、撮像素子23の光軸OA方向の位置を高精度に保つことが可能となる。 The engaging
Therefore, even when the power is off, the
Therefore, the
Note that the movement limiting operation of the
Further, in the above-described embodiment, the
実施形態で移動制限機構40は、撮像ユニット20の背面側のスペースに配置されているので、撮像ユニット20の背面側のスペースを有効利用することができる。したがって、カメラ1の内部空間を有効に利用することができるので、カメラ1の小型化が可能になる。
In the embodiment, since the movement restriction mechanism 40 is disposed in the space on the back side of the imaging unit 20, the space on the back side of the imaging unit 20 can be effectively used. Therefore, since the internal space of the camera 1 can be effectively used, the size of the camera 1 can be reduced.
実施形態では、保持中心と可動部の重心とが一致していない場合は、保持中心と可動部の重心との離間距離に応じて、保持時に回転モーメントが加わり、可動部25を押さえるために大きな保持力が必要となる場合がある。
しかし、実施形態では、図2及び図3に示すように、移動制限機構40の保持中心を通る軸線G1は、重心Gとほぼ一致する位置を通るように配置されている。ゆえに、可動部25の重心Gを中心とした円周上における略均等な距離の3点で可動部25を保持する。保持中心と可動部25の重心Gとが略一致しているので、可動部25を押さえるための保持力が比較的小さくてすむ。また、各部材の機械的な遊び(ガタ)による、可動部25の傾きを小さくすることが可能となる。なお、係合部50が係合される被係合部28の位置を、可動部25の重心Gを中心とした円周上としたが、厳密に重心Gを中心とする形態に限定されず、若干ずれ重心Gの近傍であってもよい。例えば撮像中心よりも重心Gに近い位置であればよい。 In the embodiment, when the holding center does not coincide with the center of gravity of the movable portion, a rotational moment is applied at the time of holding according to the separation distance between the holding center and the center of gravity of the movable portion. Retention may be required.
However, in the embodiment, as shown in FIGS. 2 and 3, the axis G <b> 1 passing through the holding center of themovement restricting mechanism 40 is disposed so as to pass through a position that substantially matches the center of gravity G. Therefore, the movable portion 25 is held at three points at substantially equal distances on the circumference around the center of gravity G of the movable portion 25. Since the holding center and the center of gravity G of the movable portion 25 are substantially coincident with each other, the holding force for pressing the movable portion 25 can be relatively small. In addition, the inclination of the movable portion 25 due to mechanical play (play) of each member can be reduced. The position of the engaged portion 28 with which the engaging portion 50 is engaged is set on the circumference centered on the center of gravity G of the movable portion 25, but is not strictly limited to the form centered on the center of gravity G. May be in the vicinity of the center of gravity G that is slightly shifted. For example, the position may be a position closer to the center of gravity G than the imaging center.
しかし、実施形態では、図2及び図3に示すように、移動制限機構40の保持中心を通る軸線G1は、重心Gとほぼ一致する位置を通るように配置されている。ゆえに、可動部25の重心Gを中心とした円周上における略均等な距離の3点で可動部25を保持する。保持中心と可動部25の重心Gとが略一致しているので、可動部25を押さえるための保持力が比較的小さくてすむ。また、各部材の機械的な遊び(ガタ)による、可動部25の傾きを小さくすることが可能となる。なお、係合部50が係合される被係合部28の位置を、可動部25の重心Gを中心とした円周上としたが、厳密に重心Gを中心とする形態に限定されず、若干ずれ重心Gの近傍であってもよい。例えば撮像中心よりも重心Gに近い位置であればよい。 In the embodiment, when the holding center does not coincide with the center of gravity of the movable portion, a rotational moment is applied at the time of holding according to the separation distance between the holding center and the center of gravity of the movable portion. Retention may be required.
However, in the embodiment, as shown in FIGS. 2 and 3, the axis G <b> 1 passing through the holding center of the
撮像素子23を前側から押さえる場合、撮像面を遮ることができないので、可動部25の重心Gを中心とした複数個所を保持することが難しい。しかし、実施形態では撮像素子23の背面側から押さえるので、重心Gを中心とした複数個所を保持することが可能となった。
(4) When the imaging element 23 is pressed from the front side, the imaging surface cannot be blocked, so that it is difficult to hold a plurality of locations around the center of gravity G of the movable part 25. However, in the present embodiment, since the image sensor 23 is pressed from the back side, it is possible to hold a plurality of points around the center of gravity G.
なお、実施形態のボイスコイルモータは、マグネット311、312、313を固定部24、コイル211,212,213を可動部25に設けた。しかし、これに限らず、マグネットを可動部に設け、コイルを固定部に設けてもよい。
また、実施形態では、係合部50の凹部51に被係合部28が入り込む形態であったが、移動制限機構はこれに限らず、他の形態であってもよい。 In the voice coil motor according to the embodiment, the magnets 311, 312, and 313 are provided in the fixed unit 24, and the coils 211, 212, and 213 are provided in the movable unit 25. However, the present invention is not limited to this, and the magnet may be provided on the movable portion, and the coil may be provided on the fixed portion.
Further, in the embodiment, the engagedportion 28 enters the concave portion 51 of the engaging portion 50, but the movement restricting mechanism is not limited to this, and may be another type.
また、実施形態では、係合部50の凹部51に被係合部28が入り込む形態であったが、移動制限機構はこれに限らず、他の形態であってもよい。 In the voice coil motor according to the embodiment, the
Further, in the embodiment, the engaged
(第2実施形態)
次に、本発明の第2実施形態について説明する。以下、第2実施形態の説明において、第1実施形態と同一の符号を用いる。
第2実施形態のカメラ1も、第1実施形態と同様に図1に示すように撮像素子23を備える撮像ユニット20と、撮像ユニット20における撮像素子23の移動制限機構40と、レリーズスイッチ11と、表示部12と、ブレ検出センサ13と、第1の駆動部21と、位置検出部22と、制御部14と、を備える。 (2nd Embodiment)
Next, a second embodiment of the present invention will be described. Hereinafter, in the description of the second embodiment, the same reference numerals are used as in the first embodiment.
As in the first embodiment, thecamera 1 of the second embodiment also includes an imaging unit 20 including an imaging element 23 as shown in FIG. 1, a movement restriction mechanism 40 for the imaging element 23 in the imaging unit 20, a release switch 11, , Display unit 12, blur detection sensor 13, first drive unit 21, position detection unit 22, and control unit 14.
次に、本発明の第2実施形態について説明する。以下、第2実施形態の説明において、第1実施形態と同一の符号を用いる。
第2実施形態のカメラ1も、第1実施形態と同様に図1に示すように撮像素子23を備える撮像ユニット20と、撮像ユニット20における撮像素子23の移動制限機構40と、レリーズスイッチ11と、表示部12と、ブレ検出センサ13と、第1の駆動部21と、位置検出部22と、制御部14と、を備える。 (2nd Embodiment)
Next, a second embodiment of the present invention will be described. Hereinafter, in the description of the second embodiment, the same reference numerals are used as in the first embodiment.
As in the first embodiment, the
カメラ1は、加速度センサを備える。なお、加速度センサはブレ検出センサ13と共通でもよい。また、第2実施形態の移動制限機構40は、第1実施形態の移動制限機構40に限定されず、他の移動制限機構40であってもよい。移動制限機構40の係合部50が、可動部25の被係合部28と係合する個所は3カ所でなく、2カ所や1カ所であってもよく、また、係合部50は、可動部25の全面と係合する構成等であってもよい。
The camera 1 has an acceleration sensor. Note that the acceleration sensor may be common to the shake detection sensor 13. Further, the movement restriction mechanism 40 of the second embodiment is not limited to the movement restriction mechanism 40 of the first embodiment, and may be another movement restriction mechanism 40. The position where the engaging portion 50 of the movement restricting mechanism 40 engages with the engaged portion 28 of the movable portion 25 is not limited to three, but may be two or one. A configuration that engages with the entire surface of the movable portion 25 may be used.
図10は、第2実施形態におけるカメラ1の制御部14の動作を説明するフローチャートである。
第2実施形態において制御部14は、加速度センサで検出された加速度が、一定時間以上0Gの場合(ステップS1,YES)、自由落下であると検知する(ステップS2)。
自由落下であることが検知されると、制御部14は、移動制限機構により可動部の移動を制限する(ステップS3)。
以上、第2実施形態によると、カメラ1の落下が検知された場合に可動部の移動を制限するので可動部が他部材と衝突して破損等する可能性が低減される。 FIG. 10 is a flowchart illustrating the operation of thecontrol unit 14 of the camera 1 according to the second embodiment.
In the second embodiment, when the acceleration detected by the acceleration sensor is 0 G for a certain period of time or longer (Step S1, YES), thecontroller 14 detects that the object is a free fall (Step S2).
When the free fall is detected, thecontrol unit 14 restricts the movement of the movable unit by the movement restriction mechanism (step S3).
As described above, according to the second embodiment, when the fall of thecamera 1 is detected, the movement of the movable part is restricted, so that the possibility that the movable part collides with another member and is damaged is reduced.
第2実施形態において制御部14は、加速度センサで検出された加速度が、一定時間以上0Gの場合(ステップS1,YES)、自由落下であると検知する(ステップS2)。
自由落下であることが検知されると、制御部14は、移動制限機構により可動部の移動を制限する(ステップS3)。
以上、第2実施形態によると、カメラ1の落下が検知された場合に可動部の移動を制限するので可動部が他部材と衝突して破損等する可能性が低減される。 FIG. 10 is a flowchart illustrating the operation of the
In the second embodiment, when the acceleration detected by the acceleration sensor is 0 G for a certain period of time or longer (Step S1, YES), the
When the free fall is detected, the
As described above, according to the second embodiment, when the fall of the
(第3実施形態)
次に、撮像装置の第3実施形態としてのカメラについて説明する。第3実施形態のカメラは、第1実施形態のカメラ1と、移動制限機構140以外同一であるので、同一の部分の説明は省略する。 (Third embodiment)
Next, a camera as a third embodiment of the imaging apparatus will be described. The camera according to the third embodiment is the same as thecamera 1 according to the first embodiment except for the movement restricting mechanism 140, and a description of the same parts will be omitted.
次に、撮像装置の第3実施形態としてのカメラについて説明する。第3実施形態のカメラは、第1実施形態のカメラ1と、移動制限機構140以外同一であるので、同一の部分の説明は省略する。 (Third embodiment)
Next, a camera as a third embodiment of the imaging apparatus will be described. The camera according to the third embodiment is the same as the
(移動制限機構140)
第3実施形態の移動制限機構140は、第1実施形態と同様に、カメラの筐体内の撮像ユニット20の背面側のスペースに配置されている。
図11は移動制限機構140を前斜めから見た分解斜視図である。図12は移動制限機構140を後斜めから見た分解斜視図である。図13は移動制限機構140の後面図である。図14は、被係合部28の移動(可動部25の固定部24に対する移動)を制限している第1の位置にある移動制限機構140の前面図である。図15は、被係合部28の移動を制限していない第2の位置にある移動制限機構140の前面図である。図16は、被係合部28の移動を制限している第1の状態にある移動制限機構140を前側から見た斜視図である。図17は、被係合部28の移動を制限していない第2の状態にある移動制限機構140を前側から見た斜視図である。 (Movement restriction mechanism 140)
Themovement restriction mechanism 140 of the third embodiment is arranged in a space on the back side of the imaging unit 20 in the housing of the camera, as in the first embodiment.
FIG. 11 is an exploded perspective view of themovement restriction mechanism 140 as viewed obliquely from the front. FIG. 12 is an exploded perspective view of the movement restriction mechanism 140 as viewed obliquely from the rear. FIG. 13 is a rear view of the movement restriction mechanism 140. FIG. 14 is a front view of the movement restricting mechanism 140 at the first position restricting the movement of the engaged portion 28 (the movement of the movable portion 25 with respect to the fixed portion 24). FIG. 15 is a front view of the movement restricting mechanism 140 at the second position where the movement of the engaged portion 28 is not restricted. FIG. 16 is a perspective view of the movement restricting mechanism 140 in the first state restricting the movement of the engaged portion 28 as viewed from the front side. FIG. 17 is a perspective view of the movement restricting mechanism 140 in the second state in which the movement of the engaged portion 28 is not restricted, as viewed from the front side.
第3実施形態の移動制限機構140は、第1実施形態と同様に、カメラの筐体内の撮像ユニット20の背面側のスペースに配置されている。
図11は移動制限機構140を前斜めから見た分解斜視図である。図12は移動制限機構140を後斜めから見た分解斜視図である。図13は移動制限機構140の後面図である。図14は、被係合部28の移動(可動部25の固定部24に対する移動)を制限している第1の位置にある移動制限機構140の前面図である。図15は、被係合部28の移動を制限していない第2の位置にある移動制限機構140の前面図である。図16は、被係合部28の移動を制限している第1の状態にある移動制限機構140を前側から見た斜視図である。図17は、被係合部28の移動を制限していない第2の状態にある移動制限機構140を前側から見た斜視図である。 (Movement restriction mechanism 140)
The
FIG. 11 is an exploded perspective view of the
移動制限機構140は、ベース板141と、ベース板141の後側に配置された回転板143と、ベース板141の側部に配置されたギア部142と、ベース板141の前面に配置された保持部材144とを備える。
The movement restricting mechanism 140 is disposed on the base plate 141, the rotating plate 143 disposed on the rear side of the base plate 141, the gear part 142 disposed on the side of the base plate 141, and the front surface of the base plate 141. And a holding member 144.
(ベース板141)
ベース板141は略矩形の板状で、図12,13に示すように後面に円形の回転板保持凹部141bと、回転板保持凹部141bの中心から後方に延びる回転板保持軸141aと、回転板保持凹部141bの外側に設けられたギア保持凹部141dと、ギア保持凹部141dから後方に延びるギア支持軸141cとが設けられている。回転板保持軸141aは軸線G1に沿って延び、軸線G1は、可動部25の重心Gとほぼ一致する位置を通るように配置されている。 (Base plate 141)
Thebase plate 141 has a substantially rectangular plate shape, as shown in FIGS. 12 and 13, a circular rotating plate holding recess 141b on the rear surface, a rotating plate holding shaft 141a extending rearward from the center of the rotating plate holding recess 141b, and a rotating plate. A gear holding recess 141d provided outside the holding recess 141b and a gear support shaft 141c extending rearward from the gear holding recess 141d are provided. The rotating plate holding shaft 141a extends along the axis G1, and the axis G1 is disposed so as to pass through a position substantially coincident with the center of gravity G of the movable portion 25.
ベース板141は略矩形の板状で、図12,13に示すように後面に円形の回転板保持凹部141bと、回転板保持凹部141bの中心から後方に延びる回転板保持軸141aと、回転板保持凹部141bの外側に設けられたギア保持凹部141dと、ギア保持凹部141dから後方に延びるギア支持軸141cとが設けられている。回転板保持軸141aは軸線G1に沿って延び、軸線G1は、可動部25の重心Gとほぼ一致する位置を通るように配置されている。 (Base plate 141)
The
回転板保持凹部141bの底面には軸線G1を中心とした円周上の互いに等間隔な3か所に、ピン挿入長孔141eが貫通して設けられている。
さらに、回転板保持凹部141bの底面における、3つのピン挿入長孔141eよりも外周側には、軸線G1を中心とした円周上の互いに等間隔な3か所に、爪挿入長孔141fが貫通して設けられている。 On the bottom surface of the rotatingplate holding recess 141b, three pin insertion slots 141e are provided penetrating at three equally spaced positions on the circumference around the axis G1.
Further, on the bottom surface of the rotaryplate holding recess 141b, on the outer peripheral side of the three pin insertion slots 141e, three claw insertion slots 141f are provided at three equally spaced positions on the circumference around the axis G1. It is provided through.
さらに、回転板保持凹部141bの底面における、3つのピン挿入長孔141eよりも外周側には、軸線G1を中心とした円周上の互いに等間隔な3か所に、爪挿入長孔141fが貫通して設けられている。 On the bottom surface of the rotating
Further, on the bottom surface of the rotary
図11,14から図17に示すように、ベース板141の前面には、軸線G1を中心とした円周上の互いに等間隔な3か所に、前方に延びる爪保持軸141iが設けられている。
さらに、軸線G1を中心とした円周上の互いに等間隔な3か所に、バネ保持突起141gが設けられている。バネ保持突起141gには、それぞれコイルばね141hが挿入されている。
さらに、ベース板141の前面には、第2の駆動部であって、アクチュエータであるモータ149が固定されている。モータ149の回転軸はY方向に延び、回転軸の外周にウォームギア149aが取り付けられている。 As shown in FIGS. 11 and 14 to 17, on the front surface of thebase plate 141, claw holding shafts 141i extending forward are provided at three equally spaced positions on the circumference around the axis G1. I have.
Further,spring holding projections 141g are provided at three equally spaced positions on the circumference around the axis G1. A coil spring 141h is inserted into each of the spring holding protrusions 141g.
Further, amotor 149 serving as a second driving unit, which is an actuator, is fixed to the front surface of the base plate 141. The rotation shaft of the motor 149 extends in the Y direction, and a worm gear 149a is attached to the outer periphery of the rotation shaft.
さらに、軸線G1を中心とした円周上の互いに等間隔な3か所に、バネ保持突起141gが設けられている。バネ保持突起141gには、それぞれコイルばね141hが挿入されている。
さらに、ベース板141の前面には、第2の駆動部であって、アクチュエータであるモータ149が固定されている。モータ149の回転軸はY方向に延び、回転軸の外周にウォームギア149aが取り付けられている。 As shown in FIGS. 11 and 14 to 17, on the front surface of the
Further,
Further, a
(ギア部142)
ギア部142は、外周の後方側に第1ギア歯142a、外周の前方側に第2ギア歯142bが設けられている。また、ギア部142は円板状で、中心がベース板141に設けられたギア支持軸141cに対して回転可能に取り付けられている。第2ギア歯142bには、モータ149のウォームギア149aが噛み合っている。 (Gear part 142)
Thegear portion 142 is provided with first gear teeth 142a on the rear side of the outer periphery and second gear teeth 142b on the front side of the outer periphery. The gear portion 142 has a disk shape and is rotatably attached to a gear support shaft 141c whose center is provided on the base plate 141. The worm gear 149a of the motor 149 meshes with the second gear teeth 142b.
ギア部142は、外周の後方側に第1ギア歯142a、外周の前方側に第2ギア歯142bが設けられている。また、ギア部142は円板状で、中心がベース板141に設けられたギア支持軸141cに対して回転可能に取り付けられている。第2ギア歯142bには、モータ149のウォームギア149aが噛み合っている。 (Gear part 142)
The
(回転板143)
回転板143は円環状で、中心に設けられた挿通孔143aが、ベース板141の回転板保持軸141aに挿入されてベース板141の回転板保持凹部141bの内部に、相対回転可能に保持されている。
回転板143は外周の一部にギア歯143bが形成され、ギア部142の第1ギア歯142aと噛み合っている。
回転板143の外周の互いに等間隔な3か所から、径方向外側に延びる第1保持爪143cが設けられている。第1保持爪143cは、径方向に延びる第1保持面143dを備える。
第1保持爪143cは、ベース板141に設けられた爪挿入長孔141f内に挿入され、回転板143の回転によって、爪挿入長孔141f内を周方向に移動する。また、回転板143の前面の軸線G1を中心とした円周上の互いに等間隔な3か所から前方にピン部材143eが延びている。 (Rotating plate 143)
Therotating plate 143 has an annular shape, and an insertion hole 143 a provided at the center is inserted into the rotating plate holding shaft 141 a of the base plate 141 and held in the rotating plate holding recess 141 b of the base plate 141 so as to be relatively rotatable. ing.
Therotating plate 143 has gear teeth 143b formed on a part of the outer periphery, and meshes with the first gear teeth 142a of the gear portion 142.
First holdingclaws 143c extending radially outward are provided at three equally spaced locations on the outer periphery of the rotating plate 143. The first holding claw 143c includes a first holding surface 143d extending in the radial direction.
Thefirst holding claw 143c is inserted into a claw insertion slot 141f provided in the base plate 141, and moves in the claw insertion slot 141f in the circumferential direction by rotation of the rotating plate 143. Further, a pin member 143e extends forward from three equally spaced locations on the circumference centered on the axis G1 on the front surface of the rotating plate 143.
回転板143は円環状で、中心に設けられた挿通孔143aが、ベース板141の回転板保持軸141aに挿入されてベース板141の回転板保持凹部141bの内部に、相対回転可能に保持されている。
回転板143は外周の一部にギア歯143bが形成され、ギア部142の第1ギア歯142aと噛み合っている。
回転板143の外周の互いに等間隔な3か所から、径方向外側に延びる第1保持爪143cが設けられている。第1保持爪143cは、径方向に延びる第1保持面143dを備える。
第1保持爪143cは、ベース板141に設けられた爪挿入長孔141f内に挿入され、回転板143の回転によって、爪挿入長孔141f内を周方向に移動する。また、回転板143の前面の軸線G1を中心とした円周上の互いに等間隔な3か所から前方にピン部材143eが延びている。 (Rotating plate 143)
The
The
First holding
The
(保持部材144)
保持部材144は、3つ設けられ、互いに同形である。それぞれの保持部材144は軸線G1を中心とした円周に沿って互いに等間隔に配置されている。
保持部材144は、回転中心孔144aと、回転中心孔144aが設けられている部分から周方向に延びる腕部144bと、腕部144bの先端から径方向外側に延びる第2保持爪144cと、を備える。
回転中心孔144aには、ベース板141の爪保持軸141iが挿入され、保持部材144は爪保持軸141iを中心として回転可能である。
また、腕部144bの径方向内側の面はカム面144eとなっている。回転板143に設けられたピン部材143eはベース板141のピン挿入長孔141eを貫通してカム面144eに当接している。
さらに腕部144bにおける回転中心孔144aと逆側の部分には、バネ係合部144fが設けられている。バネ係合部144fには、ベース板141のバネ保持突起141gに取り付けられたコイルばね141hの一端が当接し、保持部材144は、コイルばね141hによって回転中心孔144aを中心とした図15における反時計回りに付勢されている。
第2保持爪144cには、回転中心孔144a側を向いた第2保持面144dが設けられている。
保持部材144が爪保持軸141iを中心として回転すると、第2保持面144dは爪挿入長孔141fの前側から退避した位置と、爪挿入長孔141fの前側に侵入した状態とで移動する。 (Holding member 144)
The three holdingmembers 144 are provided and have the same shape. The respective holding members 144 are arranged at equal intervals along the circumference around the axis G1.
The holdingmember 144 includes a rotation center hole 144a, an arm 144b extending in a circumferential direction from a portion where the rotation center hole 144a is provided, and a second holding claw 144c extending radially outward from a tip end of the arm 144b. Prepare.
Theclaw holding shaft 141i of the base plate 141 is inserted into the rotation center hole 144a, and the holding member 144 is rotatable around the claw holding shaft 141i.
A surface on the radially inner side of thearm portion 144b is a cam surface 144e. A pin member 143e provided on the rotary plate 143 penetrates the pin insertion slot 141e of the base plate 141 and is in contact with the cam surface 144e.
Further, aspring engaging portion 144f is provided in a portion of the arm portion 144b opposite to the rotation center hole 144a. One end of a coil spring 141h attached to a spring holding projection 141g of the base plate 141 abuts against the spring engaging portion 144f, and the holding member 144 is turned around the rotation center hole 144a by the coil spring 141h in FIG. Energized clockwise.
Thesecond holding claw 144c is provided with a second holding surface 144d facing the rotation center hole 144a.
When the holdingmember 144 rotates about the claw holding shaft 141i, the second holding surface 144d moves between a position retracted from the front side of the claw insertion slot 141f and a state in which it enters the front side of the claw insertion slot 141f.
保持部材144は、3つ設けられ、互いに同形である。それぞれの保持部材144は軸線G1を中心とした円周に沿って互いに等間隔に配置されている。
保持部材144は、回転中心孔144aと、回転中心孔144aが設けられている部分から周方向に延びる腕部144bと、腕部144bの先端から径方向外側に延びる第2保持爪144cと、を備える。
回転中心孔144aには、ベース板141の爪保持軸141iが挿入され、保持部材144は爪保持軸141iを中心として回転可能である。
また、腕部144bの径方向内側の面はカム面144eとなっている。回転板143に設けられたピン部材143eはベース板141のピン挿入長孔141eを貫通してカム面144eに当接している。
さらに腕部144bにおける回転中心孔144aと逆側の部分には、バネ係合部144fが設けられている。バネ係合部144fには、ベース板141のバネ保持突起141gに取り付けられたコイルばね141hの一端が当接し、保持部材144は、コイルばね141hによって回転中心孔144aを中心とした図15における反時計回りに付勢されている。
第2保持爪144cには、回転中心孔144a側を向いた第2保持面144dが設けられている。
保持部材144が爪保持軸141iを中心として回転すると、第2保持面144dは爪挿入長孔141fの前側から退避した位置と、爪挿入長孔141fの前側に侵入した状態とで移動する。 (Holding member 144)
The three holding
The holding
The
A surface on the radially inner side of the
Further, a
The
When the holding
(動作)
(第2の位置)
撮影時において、移動制限機構140は、図13、図15及び図17に示すように、第1実施形態で説明した被係合部28の移動を制限していない第2の位置にある。 (motion)
(Second position)
At the time of photographing, as shown in FIGS. 13, 15, and 17, themovement restriction mechanism 140 is at the second position where the movement of the engaged portion 28 described in the first embodiment is not restricted.
(第2の位置)
撮影時において、移動制限機構140は、図13、図15及び図17に示すように、第1実施形態で説明した被係合部28の移動を制限していない第2の位置にある。 (motion)
(Second position)
At the time of photographing, as shown in FIGS. 13, 15, and 17, the
(第1保持面143dの位置)
図13に示す第2の位置において第1保持面143dは、爪挿入長孔141fの背面から退避した位置にある。 (Position offirst holding surface 143d)
In the second position shown in FIG. 13, thefirst holding surface 143d is at a position retracted from the back surface of the nail insertion slot 141f.
図13に示す第2の位置において第1保持面143dは、爪挿入長孔141fの背面から退避した位置にある。 (Position of
In the second position shown in FIG. 13, the
(第2保持面144dの位置)
図15、図17に示すようにピン部材143eは、保持部材144におけるカム面144eの回転中心孔144a側に位置する。
バネ係合部144fは、コイルばね141hによって付勢され、回転中心孔144a(爪保持軸141i)を中心として図中反時計回り、すなわちカム面144eの先端が軸線1Gに近づく方向に付勢されている。
このため第2保持面144dは、爪挿入長孔141fから退避した、すなわち被係合部28から離れた第2の位置に存在する。 (Position ofsecond holding surface 144d)
As shown in FIGS. 15 and 17, thepin member 143e is located on the rotation center hole 144a side of the cam surface 144e of the holding member 144.
Thespring engaging portion 144f is urged by the coil spring 141h, and is urged counterclockwise in the drawing around the rotation center hole 144a (claw holding shaft 141i), that is, in a direction in which the tip of the cam surface 144e approaches the axis 1G. ing.
For this reason, thesecond holding surface 144d is located at the second position retreated from the claw insertion long hole 141f, that is, separated from the engaged portion 28.
図15、図17に示すようにピン部材143eは、保持部材144におけるカム面144eの回転中心孔144a側に位置する。
バネ係合部144fは、コイルばね141hによって付勢され、回転中心孔144a(爪保持軸141i)を中心として図中反時計回り、すなわちカム面144eの先端が軸線1Gに近づく方向に付勢されている。
このため第2保持面144dは、爪挿入長孔141fから退避した、すなわち被係合部28から離れた第2の位置に存在する。 (Position of
As shown in FIGS. 15 and 17, the
The
For this reason, the
(第1の位置)
(第1保持面143dの位置)
例えば、カメラのメイン電源OFFが撮影者により選択されると、電源が完全にOFFになる前にベース板141に固定されたモータ149が回転する。
そうすると、モータ149の回転軸のウォームギア149aとギア部142の第1ギア歯142aとが噛み合って、モータ149の回転力がギア部142に伝達されてギア部142が図13に示す矢印A1の方向に回転する。
ギア部142がA1方向に回転すると、第1ギア歯142aとギア歯143bとの噛み合いにより回転板143が図13に示す矢印A2方向に回転する。
回転板143がA2方向に回転すると、第1保持面143dも回転板保持軸141a(G1)を中心として図13、図14、図15に示す矢印A2方向に移動する。 (First position)
(Position offirst holding surface 143d)
For example, when the main power of the camera is turned off by the photographer, themotor 149 fixed to the base plate 141 rotates before the power is completely turned off.
Then, theworm gear 149a of the rotating shaft of the motor 149 meshes with the first gear teeth 142a of the gear portion 142, and the rotational force of the motor 149 is transmitted to the gear portion 142, and the gear portion 142 is moved in the direction of arrow A1 shown in FIG. To rotate.
When thegear portion 142 rotates in the A1 direction, the rotating plate 143 rotates in the direction of the arrow A2 shown in FIG. 13 due to the engagement of the first gear teeth 142a and the gear teeth 143b.
When therotating plate 143 rotates in the direction A2, the first holding surface 143d also moves about the rotating plate holding shaft 141a (G1) in the direction of the arrow A2 shown in FIGS. 13, 14, and 15.
(第1保持面143dの位置)
例えば、カメラのメイン電源OFFが撮影者により選択されると、電源が完全にOFFになる前にベース板141に固定されたモータ149が回転する。
そうすると、モータ149の回転軸のウォームギア149aとギア部142の第1ギア歯142aとが噛み合って、モータ149の回転力がギア部142に伝達されてギア部142が図13に示す矢印A1の方向に回転する。
ギア部142がA1方向に回転すると、第1ギア歯142aとギア歯143bとの噛み合いにより回転板143が図13に示す矢印A2方向に回転する。
回転板143がA2方向に回転すると、第1保持面143dも回転板保持軸141a(G1)を中心として図13、図14、図15に示す矢印A2方向に移動する。 (First position)
(Position of
For example, when the main power of the camera is turned off by the photographer, the
Then, the
When the
When the
(第2保持面144dの位置)
また、回転板143が回転すると、ピン部材143eも回転板保持軸141a(G1)を中心として図14,15に矢印A2で示す周方向に移動する。そうすると、ピン部材143eによってカム面144eが移動され、保持部材144が、コイルばね141hの力に抗して回転中心孔144a(爪保持軸141i)を中心として回転する。
保持部材144が回転すると、第2保持面144dも回転中心孔144a(爪保持軸141i)を中心として図15に示す矢印A3の方向に移動する。
これにより、第2保持面144dと第1保持面143dとがXY平面で互いに近づく方向に移動し、第2保持面144dと第1保持面143dとの間に被係合部28を挟持した図14の状態となる。 (Position ofsecond holding surface 144d)
When therotating plate 143 rotates, the pin member 143e also moves in the circumferential direction indicated by an arrow A2 in FIGS. 14 and 15 around the rotating plate holding shaft 141a (G1). Then, the cam surface 144e is moved by the pin member 143e, and the holding member 144 rotates around the rotation center hole 144a (claw holding shaft 141i) against the force of the coil spring 141h.
When the holdingmember 144 rotates, the second holding surface 144d also moves about the rotation center hole 144a (claw holding shaft 141i) in the direction of arrow A3 shown in FIG.
Thereby, thesecond holding surface 144d and the first holding surface 143d move in a direction approaching each other on the XY plane, and the engaged portion 28 is sandwiched between the second holding surface 144d and the first holding surface 143d. The state becomes 14.
また、回転板143が回転すると、ピン部材143eも回転板保持軸141a(G1)を中心として図14,15に矢印A2で示す周方向に移動する。そうすると、ピン部材143eによってカム面144eが移動され、保持部材144が、コイルばね141hの力に抗して回転中心孔144a(爪保持軸141i)を中心として回転する。
保持部材144が回転すると、第2保持面144dも回転中心孔144a(爪保持軸141i)を中心として図15に示す矢印A3の方向に移動する。
これにより、第2保持面144dと第1保持面143dとがXY平面で互いに近づく方向に移動し、第2保持面144dと第1保持面143dとの間に被係合部28を挟持した図14の状態となる。 (Position of
When the
When the holding
Thereby, the
第1実施形態においては板バネ部材52の押圧部52bが被係合部28と当接し、被係合部28、すなわち可動部25を光軸OA方向に弾性的に保持していた。しかし、第3実施形態においては被係合部28、すなわち可動部25を、光軸OAと直交するXY平面の方向から保持部材144により押さえる。したがって、可動部25を光軸OA方向から押圧することなく保持が可能であり、可動部25の光軸OA方向への移動を抑制することが可能となる。これにより、撮像素子23を含む可動部25のXY平面方向の移動を移動制限機構140により制限した状態における、撮像素子23の光軸OA方向の位置を高精度に保つことが可能となる。
In the first embodiment, the pressing portion 52b of the leaf spring member 52 comes into contact with the engaged portion 28, and the engaged portion 28, that is, the movable portion 25 is elastically held in the optical axis OA direction. However, in the third embodiment, the engaged portion 28, that is, the movable portion 25 is pressed by the holding member 144 from the direction of the XY plane orthogonal to the optical axis OA. Therefore, the movable section 25 can be held without being pressed in the direction of the optical axis OA, and the movement of the movable section 25 in the direction of the optical axis OA can be suppressed. This makes it possible to maintain the position of the image sensor 23 in the optical axis OA direction with high accuracy in a state where the movement of the movable part 25 including the image sensor 23 in the XY plane direction is restricted by the movement restricting mechanism 140.
さらに、第1実施形態と同様に、電源OFFの状態でも撮像素子23を含む可動部25が固定されるので、可動部25が重力により落下したり、持ち運びの振動により移動することがない。したがって、電力を消費することなく、撮像素子23を含む可動部25を保持することができる。
Further, similarly to the first embodiment, the movable portion 25 including the image sensor 23 is fixed even in the power-off state, so that the movable portion 25 does not fall due to gravity or move due to the vibration of carrying. Therefore, the movable section 25 including the imaging element 23 can be held without consuming power.
第1実施形態と同様に、第3実施形態で説明した移動制限機構140は、撮像ユニット20の背面側のスペースに配置されているので、撮像ユニット20の背面側のスペースを有効利用することができる。したがって、カメラ1の内部空間を有効に利用することができるので、カメラ1の小型化が可能になる。
As in the first embodiment, the movement restriction mechanism 140 described in the third embodiment is disposed in the space on the back side of the imaging unit 20, so that the space on the back side of the imaging unit 20 can be effectively used. it can. Therefore, since the internal space of the camera 1 can be effectively used, the size of the camera 1 can be reduced.
第1実施形態と同様に、第3実施形態では、保持中心と可動部25の重心Gとが略一致しているので、可動部25を押さえるための保持力が比較的小さくてすむ。また、各部材の機械的な遊び(ガタ)による、可動部25の傾きを小さくすることが可能となる。
Similar to the first embodiment, in the third embodiment, the holding center and the center of gravity G of the movable portion 25 substantially match, so that the holding force for pressing the movable portion 25 can be relatively small. In addition, the inclination of the movable portion 25 due to mechanical play (play) of each member can be reduced.
第1実施形態と同様に、撮像素子23を前側から押さえる場合、撮像面を遮ることができないので、可動部25の重心Gを中心とした複数個所を保持することが難しい。しかし、第3実施形態では撮像素子23の背面側から押さえるので、重心Gを中心とした複数個所を保持することが可能となった。
As in the first embodiment, when the imaging element 23 is pressed from the front side, the imaging surface cannot be blocked, so that it is difficult to hold a plurality of locations around the center of gravity G of the movable part 25. However, in the third embodiment, since it is pressed from the back side of the image sensor 23, it is possible to hold a plurality of points around the center of gravity G.
上述した第3実施形態では、イスコイルモータは、マグネット311、312、313を固定部24、コイル211,212,213を可動部25に設けた。しかし、これに限らず、マグネットを可動部に設け、コイルを固定部に設けてもよい。
In the third embodiment described above, in the chair coil motor, the magnets 311, 312, 313 are provided in the fixed part 24, and the coils 211, 212, 213 are provided in the movable part 25. However, the present invention is not limited to this, and the magnet may be provided on the movable portion, and the coil may be provided on the fixed portion.
また、上述した第3実施形態では、可動部25が3つの被係合部28を備え、3つの被係合部28をそれぞれ光軸OAと直交するXY平面の方向から保持部材144により保持する構成について説明した。これとは別に、可動部25が1つの被係合部28を備え、1つの被係合部28をXY平面の方向から保持部材144により保持する構成としてもよい。このような構成であっても、可動部25を光軸OA方向に押圧することなく可動部25を保持することが可能であり、可動部25の光軸OA方向への移動を抑制することが可能となる。これにより、撮像素子23の光軸OA方向の位置を高精度に保つことが可能となる。
In the above-described third embodiment, the movable portion 25 includes the three engaged portions 28, and the three engaged portions 28 are respectively held by the holding members 144 from the direction of the XY plane orthogonal to the optical axis OA. The configuration has been described. Alternatively, the movable portion 25 may be provided with one engaged portion 28, and the one engaged portion 28 may be held by the holding member 144 from the direction of the XY plane. Even with such a configuration, it is possible to hold the movable portion 25 without pressing the movable portion 25 in the optical axis OA direction, and it is possible to suppress the movement of the movable portion 25 in the optical axis OA direction. It becomes possible. This makes it possible to maintain the position of the image sensor 23 in the direction of the optical axis OA with high accuracy.
また、上述した第3実施形態では、可動部25に設けられた被係合部28を保持部材144により挟持して保持する構成について説明した。これとは別に、例えば、可動部25に、凸状の被係合部でなく凹状の被係合部を設け、この凹状の被係合部を内側から保持部材によりXY平面内で力を加えて押さえる構成としてもよい。このような構成であっても、可動部25を光軸OA方向に押圧することなく可動部25を保持することが可能であり、可動部25の光軸OA方向への移動を抑制することが可能となる。これにより、撮像素子23の光軸OA方向の位置を高精度に保つことが可能となる。
In the third embodiment described above, the configuration in which the engaged portion 28 provided on the movable portion 25 is sandwiched and held by the holding member 144 has been described. Separately from this, for example, a concave engaged portion is provided on the movable portion 25 instead of the convex engaged portion, and a force is applied to the concave engaged portion from the inside by a holding member in the XY plane. It may be configured to hold down. Even with such a configuration, it is possible to hold the movable portion 25 without pressing the movable portion 25 in the optical axis OA direction, and it is possible to suppress the movement of the movable portion 25 in the optical axis OA direction. It becomes possible. This makes it possible to maintain the position of the image sensor 23 in the direction of the optical axis OA with high accuracy.
以上、好適な実施形態について説明したが、これらの実施形態に限定されることなく、種々の変形や変更が可能である。
Although the preferred embodiments have been described above, various modifications and changes are possible without being limited to these embodiments.
G:重心、G1:軸線、OA:光軸、1:カメラ、13:ブレ検出センサ、14:制御部、20:撮像ユニット、21:第1の駆動部、22:位置検出部、22a:ホール素子、22b:位置検出用マグネット、23:撮像素子、24:固定部、24a:固定側開口部、25:可動部、26:可動フレーム、26a:可動側開口部、27:腕部、28:被係合部、28a:当接面、28b:内周面、28c:外側面、30:固定フレーム、40:移動制限機構、41:ベース板、41a:移動板保持軸、41b:カム板保持環、41c:ギア支持軸、41d:受け、42:ギア部、42a:ギア歯、43:カム板、43a:カムギア歯、43b:斜面、44:バネ、45:付勢バネ、46:カバー板、46b:突起、47:移動板、47a:回転止め、49:モータ、49a:ねじ部、50:係合部、51:凹部、51a:外周面、51b:内側面、52:板バネ部材、52a:両端、52b:押圧部、211:コイル、212:コイル、213:コイル、214:ヨーク、311:マグネット、312:マグネット、313:マグネット
140:移動制限機構、141:ベース板、141a:回転板保持軸、141b:回転板保持凹部、141c:ギア支持軸、141d:ギア保持凹部、141e:ピン挿入長孔、141f:爪挿入長孔、141g:バネ保持突起、141h:コイルばね、141i:爪保持軸、142:ギア部、142a:第1ギア歯、142b:第2ギア歯、143:回転板、143a:挿通孔、143b:ギア歯、143c:第1保持爪、143d:第1保持面、143e:ピン部材、144:保持部材、144a:回転中心孔、144b:腕部、144c:第2保持爪部、144d:第2保持面、144e:カム面、144f:バネ係合部、149:モータ、149a:ウォームギア G: center of gravity, G1: axis, OA: optical axis, 1: camera, 13: blur detection sensor, 14: control unit, 20: imaging unit, 21: first drive unit, 22: position detection unit, 22a: hole Element, 22b: magnet for position detection, 23: imaging element, 24: fixed part, 24a: fixed side opening, 25: movable part, 26: movable frame, 26a: movable side opening, 27: arm, 28: Engaged part, 28a: abutting surface, 28b: inner peripheral surface, 28c: outer surface, 30: fixed frame, 40: movement limiting mechanism, 41: base plate, 41a: moving plate holding shaft, 41b: cam plate holding Ring, 41c: gear support shaft, 41d: receiver, 42: gear part, 42a: gear teeth, 43: cam plate, 43a: cam gear teeth, 43b: slope, 44: spring, 45: biasing spring, 46: cover plate , 46b: projection, 47: moving plate, 47a: Stopping, 49: motor, 49a: screw portion, 50: engaging portion, 51: concave portion, 51a: outer peripheral surface, 51b: inner surface, 52: leaf spring member, 52a: both ends, 52b: pressing portion, 211: coil , 212: coil, 213: coil, 214: yoke, 311: magnet, 312: magnet, 313: magnet 140: movement limiting mechanism, 141: base plate, 141a: rotating plate holding shaft, 141b: rotating plate holding concave portion, 141c : Gear supporting shaft, 141d: gear holding recess, 141e: pin insertion long hole, 141f: claw insertion long hole, 141g: spring holding projection, 141h: coil spring, 141i: claw holding shaft, 142: gear portion, 142a: No. 1 gear tooth, 142b: second gear tooth, 143: rotating plate, 143a: insertion hole, 143b: gear tooth, 143c: first holding claw, 143d: first holding Surface, 143e: pin member, 144: holding member, 144a: rotation center hole, 144b: arm, 144c: second holding claw, 144d: second holding surface, 144e: cam surface, 144f: spring engaging portion, 149: motor, 149a: worm gear
140:移動制限機構、141:ベース板、141a:回転板保持軸、141b:回転板保持凹部、141c:ギア支持軸、141d:ギア保持凹部、141e:ピン挿入長孔、141f:爪挿入長孔、141g:バネ保持突起、141h:コイルばね、141i:爪保持軸、142:ギア部、142a:第1ギア歯、142b:第2ギア歯、143:回転板、143a:挿通孔、143b:ギア歯、143c:第1保持爪、143d:第1保持面、143e:ピン部材、144:保持部材、144a:回転中心孔、144b:腕部、144c:第2保持爪部、144d:第2保持面、144e:カム面、144f:バネ係合部、149:モータ、149a:ウォームギア G: center of gravity, G1: axis, OA: optical axis, 1: camera, 13: blur detection sensor, 14: control unit, 20: imaging unit, 21: first drive unit, 22: position detection unit, 22a: hole Element, 22b: magnet for position detection, 23: imaging element, 24: fixed part, 24a: fixed side opening, 25: movable part, 26: movable frame, 26a: movable side opening, 27: arm, 28: Engaged part, 28a: abutting surface, 28b: inner peripheral surface, 28c: outer surface, 30: fixed frame, 40: movement limiting mechanism, 41: base plate, 41a: moving plate holding shaft, 41b: cam plate holding Ring, 41c: gear support shaft, 41d: receiver, 42: gear part, 42a: gear teeth, 43: cam plate, 43a: cam gear teeth, 43b: slope, 44: spring, 45: biasing spring, 46: cover plate , 46b: projection, 47: moving plate, 47a: Stopping, 49: motor, 49a: screw portion, 50: engaging portion, 51: concave portion, 51a: outer peripheral surface, 51b: inner surface, 52: leaf spring member, 52a: both ends, 52b: pressing portion, 211: coil , 212: coil, 213: coil, 214: yoke, 311: magnet, 312: magnet, 313: magnet 140: movement limiting mechanism, 141: base plate, 141a: rotating plate holding shaft, 141b: rotating plate holding concave portion, 141c : Gear supporting shaft, 141d: gear holding recess, 141e: pin insertion long hole, 141f: claw insertion long hole, 141g: spring holding projection, 141h: coil spring, 141i: claw holding shaft, 142: gear portion, 142a: No. 1 gear tooth, 142b: second gear tooth, 143: rotating plate, 143a: insertion hole, 143b: gear tooth, 143c: first holding claw, 143d: first holding Surface, 143e: pin member, 144: holding member, 144a: rotation center hole, 144b: arm, 144c: second holding claw, 144d: second holding surface, 144e: cam surface, 144f: spring engaging portion, 149: motor, 149a: worm gear
Claims (19)
- 撮像素子が配置され、移動可能に設けられた可動部と、
前記可動部を移動させる第1の駆動部と、
前記可動部の前記撮像素子が配置された面の反対の面に設けられた被係合部に係合して前記可動部の移動を制限する第1の位置と、前記被係合部に係合せず前記可動部の移動を制限しない第2の位置とで移動可能である係合部と、
前記係合部を前記第1の位置と前記第2の位置との間で移動させる第2の駆動部と、
を備える撮像装置。 An imaging element is arranged, and a movable portion movably provided;
A first drive unit for moving the movable unit;
A first position for restricting the movement of the movable portion by engaging with an engaged portion provided on a surface of the movable portion opposite to the surface on which the imaging element is arranged; An engagement portion movable in a second position that does not limit the movement of the movable portion and does not limit;
A second drive section for moving the engagement section between the first position and the second position;
An imaging device comprising: - 前記第2の駆動部は、前記係合部を前記第1の位置と前記第2の位置との間で移動させるアクチュエータを有し、
前記アクチュエータの少なくとも一部が、前記可動部の前記撮像素子が配置された面の反対側に位置する請求項1に記載の撮像装置。 The second drive unit includes an actuator that moves the engagement unit between the first position and the second position,
The imaging device according to claim 1, wherein at least a part of the actuator is located on a side of the movable portion opposite to a surface on which the imaging element is arranged. - 固定部を備え、
前記可動部は、前記固定部に対して移動可能に設けられ、
前記第1の駆動部は、前記固定部と前記可動部の一方に配置されたコイルと、前記固定部と前記可動部の他方に配置された磁石と、を有するボイスコイルモータである請求項2に記載の撮像装置。 With a fixed part,
The movable portion is provided so as to be movable with respect to the fixed portion,
3. The voice coil motor according to claim 2, wherein the first driving unit includes a coil disposed on one of the fixed unit and the movable unit, and a magnet disposed on the other of the fixed unit and the movable unit. An imaging device according to item 1. - 前記撮像素子の撮像中心に対して非対称に配置された複数の前記ボイスコイルモータを有する請求項3に記載の撮像装置。 4. The imaging device according to claim 3, further comprising a plurality of the voice coil motors arranged asymmetrically with respect to an imaging center of the imaging device.
- 前記アクチュエータは、前記撮像素子の撮像面の垂直方向において、前記ボイスコイルモータと重ならない位置に配置された請求項3又は4に記載の撮像装置。 5. The imaging device according to claim 3, wherein the actuator is arranged at a position that does not overlap with the voice coil motor in a direction perpendicular to an imaging surface of the imaging device.
- 少なくとも3つの前記係合部を備える請求項1から5のいずれか1項に記載の撮像装置。 The imaging device according to any one of claims 1 to 5, further comprising at least three of the engagement portions.
- 少なくとも3つの前記係合部がそれぞれ係合される前記被係合部は、前記可動部の重心近傍から等しい位置にある請求項6に記載の撮像装置。 The imaging device according to claim 6, wherein the engaged portions to which at least three of the engaging portions are respectively engaged are located at equal positions from near the center of gravity of the movable portion.
- 撮像素子が配置され、移動可能に設けられた可動部と、
前記可動部を移動させる第1の駆動部と、
前記可動部に設けられた被係合部に係合して前記可動部の移動を制限する第1の位置と、前記被係合部に係合せず前記可動部の移動を制限しない第2の位置とで移動可能に設けられた少なくとも3つの係合部と、
前記係合部を前記第1の位置と前記第2の位置との間で移動させる第2の駆動部と、
を備える撮像装置。 An imaging element is arranged, and a movable portion movably provided;
A first drive unit for moving the movable unit;
A first position for engaging the engaged portion provided on the movable portion and restricting the movement of the movable portion, and a second position for not engaging the engaged portion and restricting the movement of the movable portion. At least three engagement portions provided so as to be movable between positions;
A second drive section for moving the engagement section between the first position and the second position;
An imaging device comprising: - 少なくとも3つの前記係合部がそれぞれ係合される前記被係合部は、前記可動部の重心近傍から等しい位置にある請求項8に記載の撮像装置。 The imaging device according to claim 8, wherein the engaged portions with which the at least three engaging portions are respectively engaged are at equal positions from near the center of gravity of the movable portion.
- 固定部を備え、
前記可動部は、前記固定部に対して移動可能に設けられ、
前記第1の駆動部は、前記固定部と前記可動部の一方に配置されたコイルと、前記固定部と前記可動部の他方に配置された磁石と、を有するボイスコイルモータである請求項8又は9に記載の撮像装置。 With a fixed part,
The movable portion is provided so as to be movable with respect to the fixed portion,
9. The voice coil motor having a coil disposed on one of the fixed part and the movable part, and a magnet disposed on the other of the fixed part and the movable part. Or the imaging device according to 9. - 前記被係合部は、複数設けられ、前記撮像素子の撮像中心から離間した位置を中心とした同一円周上に設けられている請求項8から10のいずれか1項に記載の撮像装置。 The imaging device according to any one of claims 8 to 10, wherein a plurality of the engaged portions are provided, and are provided on the same circumference centered on a position separated from an imaging center of the imaging element.
- 前記係合部が前記被係合部と当接したときに、前記係合部を前記被係合部から離れる方向に付勢する第1弾性部材を備える請求項1から11のいずれか1項に記載の撮像装置。 12. The electronic device according to claim 1, further comprising: a first elastic member that urges the engaging portion in a direction away from the engaged portion when the engaging portion contacts the engaged portion. 13. An imaging device according to item 1.
- 前記第2の駆動部を保持するベース板と、
前記第2の駆動部によって光軸と平行な軸線を中心として回転し、軸線方向の厚みが徐々に変化するカム面を有するカム板と、
前記カム面と当接するカムフォロアが設けられ、前記カム板の前記回転によって前記軸線方向に進退するとともに、前記軸線を中心とした径方向の外径側に前記係合部が設けられている移動板と、
前記移動板を、前記ベース板の側に付勢する第2弾性部材と、
前記ベース板に対して固定されたカバー板と、を備える請求項1から12のいずれか1項に記載の撮像装置。 A base plate for holding the second drive unit,
A cam plate having a cam surface which is rotated about an axis parallel to the optical axis by the second drive unit and whose axial thickness gradually changes;
A moving plate provided with a cam follower that is in contact with the cam surface, which is advanced and retracted in the axial direction by the rotation of the cam plate, and wherein the engaging portion is provided on a radially outer diameter side centered on the axis; When,
A second elastic member that urges the moving plate toward the base plate;
The imaging device according to claim 1, further comprising: a cover plate fixed to the base plate. - 撮像素子が配置され、固定部に対して前記撮像素子の撮像面と平行な方向に移動可能に設けられた可動部と、
前記可動部の前記撮像素子が配置された面の反対の面に設けられた被係合部を、前記撮像面の垂直方向から弾性部材を介して押圧し、摩擦力により前記可動部の前記撮像面と平行な方向への移動を制限する制限部と、
を備える撮像装置。 An imaging element is disposed, and a movable unit provided to be movable in a direction parallel to an imaging surface of the imaging element with respect to a fixed unit,
The engaged portion provided on the surface of the movable portion opposite to the surface on which the imaging element is disposed is pressed from a direction perpendicular to the imaging surface via an elastic member, and the imaging of the movable portion is performed by a frictional force. A restricting portion that restricts movement in a direction parallel to the surface,
An imaging device comprising: - 撮像素子が配置され、固定部に対して前記撮像素子の撮像面と平行な方向に移動可能に設けられた可動部と、
前記可動部の前記撮像素子が配置された面の反対の面に設けられた被係合部を、前記撮像面と平行な方向から押さえることにより前記可動部の移動を制限する制限部と、
を備える撮像装置。 An imaging element is disposed, and a movable unit provided to be movable in a direction parallel to an imaging surface of the imaging element with respect to a fixed unit,
A limiting unit that limits the movement of the movable unit by pressing an engaged portion provided on a surface of the movable unit opposite to the surface on which the imaging element is arranged, in a direction parallel to the imaging surface;
An imaging device comprising: - 前記可動部は、前記可動部の重心近傍から等しい位置に設けられた少なくとも3つ以上の前記被係合部を有する請求項15に記載の撮像装置。 16. The imaging apparatus according to claim 15, wherein the movable unit has at least three or more engaged parts provided at equal positions from near the center of gravity of the movable unit.
- 前記可動部と前記固定部に対して移動させる第1の駆動部を有し、
前記第1の駆動部は、前記固定部と前記可動部の一方に配置されたコイルと、前記固定部と前記可動部の他方に配置された磁石と、を有するボイスコイルモータである請求項15又は16に記載の撮像装置。 A first drive unit configured to move the movable unit and the fixed unit,
16. The voice coil motor, wherein the first drive unit includes a coil disposed on one of the fixed unit and the movable unit, and a magnet disposed on the other of the fixed unit and the movable unit. Or the imaging device according to 16. - 前記制限部を、前記被係合部を前記撮像面と平行な方向から押さえて前記可動部の移動を制限する第1の位置と、前記被係合部を押さえず前記可動部の移動を制限しない第2の位置との間で移動させる第2の駆動部と備える請求項15から17のいずれか1項に記載の撮像装置。 A first position for restricting the movement of the movable portion by pressing the restricted portion from a direction parallel to the imaging surface, and restricting a movement of the movable portion without pressing the engaged portion; The imaging apparatus according to any one of claims 15 to 17, further comprising a second drive unit configured to move between a second position and a second position.
- 前記第2の駆動部は、前記制限部を前記第1の位置と前記第2の位置との間で移動させるアクチュエータを有し、
前記アクチュエータの少なくとも一部が、前記可動部の前記撮像素子が配置された面の反対側に位置する請求項18に記載の撮像装置。 The second drive unit includes an actuator that moves the restriction unit between the first position and the second position,
19. The imaging device according to claim 18, wherein at least a part of the actuator is located on a side of the movable unit opposite to a surface on which the imaging element is arranged.
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