JP2011215387A - Vibration control unit in optical device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration control unit in an optical device, effectively inhibiting rubbing of a folded part of an FPC even when a storing space for storing the folded part formed on the intermediate part of the FPC is narrow, and preventing the FPC from being increased in length more than needed.SOLUTION: This vibration control unit includes: the storing space 26 formed on a fixed case; a movable part 99 formed on the intermediate part in the longitudinal direction of the FPC to be inserted in the storing space and capable of moving; a part 100 to be held, which is folded back from the end part of the movable part in the storing space; a draw-out part 101 drawn out to the outside of the case from the end part of the held part toward the direction of separating from the optical axis with respect to the extending direction of the held part; and a pressing means 109 for pressing a surface on the opposite to the movable part in the held part to a second wall.

Description

  The present invention relates to a vibration isolation unit mounted on an optical apparatus such as a digital camera.

Patent Document 1 discloses a compact digital camera provided with an image stabilization mechanism (camera shake correction device).
The anti-vibration mechanism of this digital camera includes a base fixed to the camera body, a Y stage supported on the base so as to be relatively movable in the Y direction (vertical direction) orthogonal to the optical axis, and the Y direction. An X stage supported on the Y stage so as to be relatively movable in the X direction (left and right direction) orthogonal to the X stage, an image sensor fixed to the X stage, and an FPC (flexible printed circuit board) whose one end is connected to the image sensor on the X stage And an actuator for sliding the X stage and the Y stage in the X direction and the Y direction, respectively.
Therefore, when shooting is performed with the digital camera set in the image stabilization mode, the X and Y stages are slid in the X and Y directions so that the actuator cancels image blur. There is little image blur.

JP 2006-023217 A

The FPC is positioned directly above the upward extending portion extending from the imaging element, the bent portion extending forward from the upper end of the upward extending portion, and the bent portion folded back from the front end (front end) of the bent portion. A folded portion and an external control unit (control board) that extends from the front end (rear end) of the folded portion to the imaging element side (downward) and then extends to the side, and the end portion is disposed on the side of the vibration isolation mechanism. And a downwardly extending portion connected to (). The folding part composed of the bent part and the folded part is a part formed so that stress is not applied to the FPC by the moving force when the image sensor moves in the Y direction, and the FPC is assembled when the camera is assembled. In order to prevent the camera from swinging, the folding part is inserted forward from the rear into a storage space (formed between two walls spaced apart in the vertical direction) formed in the camera body (case).
As the total length of the FPC increases, not only does the electrical resistance of the FPC increase and noise is likely to occur, but a larger space is required to accommodate the FPC in the camera body, so the FPC should be as short as possible. Ideal. In order to shorten the FPC in Patent Document 1, the front end (rear end) of the folded portion is extended upward, and the front end portion is connected to an external control unit (control board) disposed above the vibration isolation mechanism. .
However, when the front end (rear end) of the folded part is extended upward, the folded part generates an elastic force that tends to bend toward the folded part side (downward). Since the space is small (the interval between the two walls is narrow), the bent portion and the folded portion come into contact in the storage space. For this reason, if the X stage and the Y stage slide in this state, the bent portion and the folded portion rub against each other in the storage space, so that the FPC may be worn and the wiring formed on the FPC may be disconnected.
In Patent Document 1, in order to avoid this problem, a portion extending from the front end (rear end) of the folded portion is defined as a downward extending portion that extends toward the side opposite to the upper side and then extends to the side. The front end of the FPC is connected to the external control unit on the side of the image sensor. However, if the FPC is configured in this way, the total length of the FPC becomes long, and thus noise is likely to occur as described above.

  According to the present invention, even when the storage space for storing the folded portion formed in the intermediate portion of the FPC is narrow, rubbing of the folded portion of the FPC can be effectively suppressed, and the FPC becomes longer than necessary. An object of the present invention is to provide an anti-vibration unit in an optical apparatus that can prevent the above-described problem.

  The vibration isolating unit in the optical device of the present invention is a fixed case fixed inside the optical device, and is accommodated in the fixed case so as to be movable in a direction perpendicular to the optical axis of the optical device. A lens unit, a stage on which one of the image sensors is mounted, and a flexible FPC that connects one end to the lens unit or the image sensor and supplies power to the electrical component or the image sensor A storage space formed between the first wall and the second wall arranged in a direction perpendicular to the optical axis, and an intermediate portion in the longitudinal direction of the FPC. A movable portion movable in the storage space that is bent so as to be inserted into the storage space; a restrained portion that is folded back from a tip end of the movable portion in the storage space; and A lead-out portion that is pulled out of the case while being bent from the tip end portion of the grip portion toward the direction away from the optical axis with respect to the extending direction of the restrained portion, and the restrained portion is the movable portion. Pressing means for pressing against the second wall side on the opposite side.

A cover member that closes the opening of the one surface while allowing the FPC to be pulled out from the internal space of the fixed case by being fixed to one surface of the fixed case in the optical axis direction. May be.
In this case, the pressing means may be a pressing claw that is formed on the cover member and protrudes into the storage space and sandwiches a part of the suppressed portion with the second wall. In this way, the pressing claw of the cover member can be used as the pressing means, so that the number of parts is reduced.

  The said drawer part may be pulled out toward the substantially the same direction as the insertion direction with respect to the said storage space of the said movable part.

You may fix a part of said drawer | drawing-out part to the surface on the opposite side to said 1st wall in said 2nd wall.

  The fixed case may include an outer peripheral side case and an inner peripheral side case, the first wall may be configured by an inner peripheral side case, and the second wall may be configured by an outer peripheral side case.

  In addition, the lens barrel assembly may be implemented by including the image stabilization unit and a lens block that is integrated with the image stabilization unit and includes a lens group that defines the optical axis.

According to the present invention, the lead-out portion of the FPC is bent in the direction away from the optical axis (imaging device, lens) with respect to the extending direction of the restrained portion from the tip portion of the restrained portion. Compared with the case where the FPC is pulled out from the front end to the optical axis side and connected to other electronic equipment (for example, a substrate) at the periphery of the image stabilization unit (on the side opposite to the folding portion across the optical axis), the total length of the FPC Can be shortened. Therefore, the electric resistance of the FPC is increased, and as a result, noise is not easily generated.
Furthermore, in the present invention, since the FPC lead-out portion is bent from the tip of the restrained portion toward the direction away from the optical axis with respect to the extending direction of the restrained portion, the restrained portion tends to approach the movable portion side. Elastic force is generated. Therefore, in the case where no contrivance is applied to the FPC, there is a high possibility that the suppressed portion and the movable portion rub against each other in the storage space when the stage moves. However, in the present invention, since the suppressed portion of the folding portion is suppressed to the inner surface of the storage space by the pressing means, it is possible to effectively prevent the suppressed portion and the movable portion from rubbing against each other.

It is the disassembled perspective view seen from the front of the lens barrel assembly of one Embodiment of this invention. It is the disassembled perspective view seen from the back of a lens-barrel assembly. It is a disassembled perspective view of a lens barrel assembly. It is the disassembled perspective view seen from some lens blocks and the back of an anti-vibration block. It is the disassembled perspective view seen from a part of lens block and the anti-vibration block. It is a rear view of a lens barrel assembly when an FPC and a back cover are removed. It is sectional drawing which follows the VII-VII arrow line of FIG. 6 when a lens-barrel is in a retracted state. FIG. 8 is a cross-sectional view similar to FIG. 7 when the lens barrel is in the extended state. It is a front view of a lens barrel assembly. It is the perspective view seen from the back which separated and showed an image sensor, FPC, a back cover, and a screw from a lens barrel assembly. It is the perspective view seen from the back of a lens-barrel assembly. It is a left view of a lens barrel assembly. It is an expanded sectional view which follows the XIII-XIII arrow line of FIG. It is sectional drawing cut | disconnected by the optical axis orthogonal plane of the anti-vibration block when the power supply of a digital camera is turned on. It is the disassembled perspective view seen from the inner peripheral side case, 2nd group support frame, a cam ring, and the back of a Y stage board.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. Further, the following left and right direction (X direction), up and down direction (Y direction), and front and rear direction (optical axis A direction) are based on the arrow direction in the figure.
The digital camera 10 of the present embodiment is a compact type, and as shown in FIGS. 7 and 8, a case 11 having a lens barrel opening 12 at the center of the front surface, a lens barrel assembly 15 housed inside the case 11, It has.
The lens barrel assembly 15 is formed by assembling and integrating the lens block 20 constituting the front portion thereof and the image stabilizing block 60 constituting the rear portion thereof.

The lens block 20 has the following configuration.
The lens block 20 is fitted to an outer peripheral side case (fixed case fixed to the case 11) 21 which is a rectangular frame body whose front and rear surfaces are open, and an inner peripheral side of the outer peripheral case 21 from the front opening of the outer peripheral case 21. And an inner peripheral case (fixed case) 28 fixed together. Three fixing protrusions 22, 23, and 24 protrude from an outer wall (second wall) 21 a constituting the left side surface of the outer case 21, and a motor mounting recess is formed at the lower left corner of the outer case 21. 25X is recessed, and a motor mounting recess 25Y is formed in the upper left corner of the outer case 21. Further, a vertically long FPC storage space 26 extending in the vertical direction is recessed forward on the left side of the rear surface of the outer case 21, and an opening 26 a is formed on the right side of the storage space 26. A motor mounting recess 29 is formed on the right side of the inner peripheral case 28, and a lens barrel guide hole 30 is formed in the center of the front surface of the inner peripheral case 28. Further, as shown in FIG. 15 and the like, an auxiliary wall (first wall) 28a whose side surface shape is substantially the same as the opening 26a is formed at the center of the left side surface of the inner peripheral case 28. 28a closes the opening 26a. As shown in FIG. 15 and the like, two cam ring cam grooves 31A (two) and one cam ring cam groove 31B (one) are formed on the inner peripheral surface of the inner peripheral case 28 having a substantially circular cross section. ) Are formed at intervals of 120 ° in the circumferential direction.
The inner case 28 supports a third group support frame 33 that supports the third lens group L3, which is a focus lens group, in a state of being guided in a straight line.
A cam ring 34, which is a substantially cylindrical member that is open at the front and rear, is disposed on the inner peripheral surface of the inner peripheral case 28. Three cam grooves 35 for the second group and three cam grooves 36 for the first group are formed on the inner peripheral surface of the cam ring 34 at 120 ° intervals in the circumferential direction. Two cam followers 37A and one cam follower 37B are formed at 120 ° intervals in the circumferential direction at the rear end portion of the outer peripheral surface of the cam ring 34. Further, a driven gear 38 having a substantially arc shape when viewed from the front is formed between the cam follower 37A and the cam follower 37B at the rear end portion of the outer peripheral surface of the cam ring 34. The cam ring 34 is configured such that two cam followers 37A engage with two cam ring cam grooves 31A, and one cam follower 37B engages with one cam ring cam groove 31B. It is housed inside the peripheral case 28.

A second group support frame 41 is disposed in the internal space of the cam ring 34. A front through hole 42 is formed on the front surface of the second group support frame 41, and three cam followers 43 are provided on the outer peripheral surface thereof at intervals of 120 ° in the circumferential direction. In addition, a second group moving frame 41a rotatably supported by a rotation support mechanism is provided inside the second group supporting frame 41, and the second lens group L2 (see FIG. 3) is fixed to the second group moving frame 41a. (Since the rotation support mechanism is not related to the gist of the present invention, its specific description is omitted). The three cam followers 43 of the second group support frame 41 are engaged with the three second group cam grooves 35 of the cam ring 34.
A first group support frame 48 positioned immediately before the second group support frame 41 is disposed in the internal space of the cam ring 34. A front through hole 49 is formed on the front surface of the first group support frame 48, and two barrier blades 50 for opening and closing the front through hole 49 are rotatably supported at the front end of the first group support frame 48. It is. Three cam followers 51 are formed at intervals of 120 ° in the circumferential direction at the rear end of the outer peripheral surface of the first group support frame 48. The first lens group L1 is fixed in the internal space of the first group support frame 48. The three cam followers 51 of the first group support frame 48 are engaged with the three first group cam grooves 36 of the cam ring 34.
A rectilinear guide ring 53 is supported on the inner peripheral surface of the inner case 28 in a state in which the rectilinear guide ring 53 is linearly guided, and the rectilinear guide ring 53 guides the second group support frame 41 and the first group support frame 48 in a straight line. Yes.

The main body of the zoom motor M1, which is a stepping motor, is fixed to the motor mounting recess 29 of the inner peripheral case 28, and the rotation drive shaft passes through the lower surface of the motor mounting recess 29 and the inner peripheral case 28. Projects into the interior space. A pinion (not shown) is fixed to the tip of the motor mounting recess 29, and the driven gear is connected to the pinion via a gear train G1 (see FIG. 3) disposed in the inner space of the inner peripheral case 28. 38. Therefore, when the zoom motor M1 rotates forward, the cam ring 34 moves while rotating forward in accordance with the engagement relationship between the cam ring cam grooves 31A and 31B and the cam followers 37A and 37B. When the cam ring 34 further moves while rotating forward, the first group support frame 48 linearly moves forward with respect to the cam ring 34 according to the engagement relationship between the cam follower 51 and the first group cam groove 36. When the cam ring 34 moves while rotating forward, the second group support frame 41 moves linearly in the optical axis A direction with respect to the cam ring 34 in accordance with the engagement relationship between the cam follower 43 and the second group cam groove 35. . On the other hand, when the zoom motor M1 rotates in the reverse direction, the cam ring 34 moves while rotating backward in accordance with the engagement relationship between the cam ring cam grooves 31A and 31B and the cam followers 37A and 37B. The second group support frame 41 linearly moves rearward with respect to the cam ring 34 in accordance with the engagement relationship of the cam groove 36, and the second group support frame 41 is light-transmitted with respect to the cam ring 34 in accordance with the engagement relationship of the cam follower 43 and the second group cam groove 35. Move linearly in the direction of axis A. When the power of the digital camera 10 is off, the third group support frame 33, the cam ring 34, the second group support frame 41, the first group support frame 48, and the rectilinear guide ring 53 are located at the retracted positions shown in FIGS. However, when the zoom motor M1 rotates forward with the power turned on, the zoom motor M1 expands to the wide end position shown in FIG. 8, and when the zoom motor M1 rotates further forward, it extends to the tele end position (not shown). . On the other hand, when the zoom motor M1 is reversely rotated at the tele end position, it moves to the wide end position, and when the power is turned off, it retracts from the wide end position to the retracted position.
Further, a main body of a focusing motor M2, which is a stepping motor, is fixed to the upper right corner of the front surface of the inner peripheral case 28, and its rotational drive shaft passes through the wall surface of the inner peripheral case 28 and passes through the inner periphery. It is located in the side case 28. A pinion (not shown) is fixed to the tip of the rotation drive shaft of the focusing motor M2, and the pinion is linked to the third group support frame 33 via a drive mechanism (not shown). When the focusing motor M2 rotates forward, the third group support frame 33 (third lens group L3) moves straight forward, and when the focusing motor M2 reverses, the third group support frame 33 (third lens group L3) moves rearward. Moving.
The outer case 21, the inner case 28, the third group support frame 33, the cam ring 34, the second group support frame 41, the first group support frame 48, the barrier blade 50, the straight guide ring 53, and the first lens group L 1 described above. The second lens group L2, the third lens group L3, the zoom motor M1, the focus motor M2, and the components attached thereto are components of the lens block 20.

Next, the structure of the image stabilization block 60 will be described.
As shown in FIG. 2, a pair of Y-direction bearings 27Y are formed at the lower left corner and upper left corner of the outer case 21 (the Y-direction bearing 27Y at the upper left corner is not shown). The Y-direction bearing 27Y supports the upper and lower ends of a Y-direction guide rod 61 extending in the vertical direction in a fixed state.
A Y stage 63 is disposed at the rear of the inner space of the outer case 21. The Y stage 63 is a plate-like member that is substantially parallel to the plane extending in the X direction and the Y direction, and a plurality of Y directions that are slidably fitted in the Y direction with respect to the Y direction guide rod 61 in the vicinity of the left edge thereof. Guide holes 64 are formed side by side in the vertical direction. At the upper left corner of the Y stage 63, a power receiving portion 65 located in the inner space of the outer case 21 directly below the motor mounting recess 25Y protrudes forward, and the power receiving portion 65 has a circular hole 65a. Are formed as through holes. A Y-direction bearing 67 is formed on the right side of the Y stage 63, and the Y-direction bearing 67 is supported by a Y-direction flange (not shown) formed in the outer case 21 so as to be slidable in the Y direction. . Therefore, the Y stage 63 is slidable in the Y direction with respect to the outer case 21 and cannot move in the X direction and the optical axis A direction. A body of a Y-direction drive motor M3, which is a stepping motor whose axis extends in the Y direction, is fixed to the motor mounting recess 25Y of the outer case 21. The rotational drive shaft M3a of the Y-direction drive motor M3 is It is located in the inner space of the outer case 21 through a through hole formed in the bottom surface of the motor mounting recess 25Y. The screw groove formed at the lower end of the rotational drive shaft M3a is screwed into a female screw hole 66a formed at the center of the nut 66 that is linearly guided in the Y direction by the Y stage 63. Furthermore, the lower end portion of the tension spring S1 extending in the Y direction is locked to the left side portion of the Y stage 63, and the upper end portion of the tension spring S1 is locked to the upper end portion of the left side portion of the outer case 21. Due to the urging force of the tension spring S1, the upper surface of the power receiving portion 65 abuts on the lower surface of the nut 66, and an annular protrusion (not shown) protruding from the lower surface of the nut 66 is formed in the circular hole 65a of the power receiving portion 65. It is mated. An X stage storage hole 68 is formed at the center of the Y stage 63, and an X direction flange 70 extending in the X direction is formed at the upper edge of the X stage storage hole 68. A pair of X-direction guide holes 71 are formed in the lower portions of the left and right sides. Further, an arm recess 73 extending obliquely is provided near the lower left corner of the rear surface of the Y stage 63.

Both ends of an X-direction guide rod 76 extending in the X direction are supported in a fixed state in the left and right X-direction guide holes 71 of the X stage storage hole 68.
An X stage 77 is disposed inside the X stage storage hole 68 of the Y stage 63. The X stage 77 is a plate-like member that is substantially parallel to a plane extending in the X direction and the Y direction. The X stage 77 has a substantially square shape when viewed from the front, and has an image sensor holding unit 78 positioned inside the X stage storage hole 68. And an arm 79 extending diagonally downward to the left from the lower left corner. The arm 79 protrudes obliquely downward to the left of the arm recess 73 through the internal space of the arm recess 73. An X-direction bearing 80 is formed at the upper end of the image sensor holding portion 78. The X-direction bearing 80 is supported by the X-direction flange 70 of the Y stage 63 so as to be slidable in the X direction, and the X stage 77. An X-direction guide rod 76 is slidably fitted in an X-direction guide hole 77A penetrating the lower end of the X-direction in the X direction. Therefore, the X stage 77 has the Y stage within a range in which the peripheral surface of the image sensor holding portion 78 does not contact the peripheral surface of the X stage storage hole 68 and the side surface of the arm 79 does not contact the side surface of the arm recess 73. 63 can slide only in the X direction on a plane parallel to the Y stage 63. Further, the right end portion of the tension spring S <b> 2 extending in the X direction is locked near the lower right corner of the image sensor holding portion 78, and the left end portion of the tension spring S <b> 2 is locked to the lower portion of the Y stage 63.

As shown in FIG. 2, a pair of X-direction bearings 27X are formed in the vicinity of the lower left corner of the outer case 21, and the left and right ends of the X-direction support shaft 83 extending in the left-right direction are formed on the pair of X-direction bearings 27X. Each is supported in a fixed state.
An X-direction drive member 85 is disposed near the lower left corner of the inner space of the outer case 21, and the X-direction drive member 85 is supported by an X-direction support shaft 83 so as to be slidable in the X direction. The X-direction drive member 85 has a roller support portion 86 that extends upward, and a pressure roller 87 that is rotatable about a rotation axis that extends in the optical axis A direction is supported on the upper front end portion of the roller support portion 86. It is. Further, a power receiving portion 89 extending forward and having a circular hole 89a protrudes from the X direction driving member 85, and a supported portion 90 (see FIG. 1) formed at the front end portion of the power receiving portion 89 is an outer periphery. A support portion (not shown) formed on the side case 21 is supported so as to be slidable in the X direction. Therefore, the X-direction drive member 85 can slide only in the X direction without rotating around the X-direction support shaft 83 with respect to the outer case 21.
A body of an X-direction drive motor M4 composed of a stepping motor whose axis extends in the X direction is fixed to the motor mounting recess 25X of the outer case 21. The rotational drive shaft M4a of the X-direction drive motor M4 is a motor. It is located in the inner space of the outer case 21 through a through hole formed in the side surface of the mounting recess 25X. A screw groove is formed in the right end portion of the rotation drive shaft M4a, and this screw groove is screwed into a female screw hole 91a formed at the center of the nut 91 that is guided in the X direction by the X direction drive member 85. Yes. Further, an annular ridge 91 c that can be inserted into and removed from the circular hole 89 a of the power receiving portion 89 is projected from the right end portion of the nut 91.

An image pickup device substrate 95 integrated with the image pickup device 94 is fixed to the image pickup device holding portion 78 by three screws 93, and the image pickup surface forming the front surface of the image pickup device 94 is the front side of the image pickup device holding portion 78. Is exposed.
One end of an FPC 97 which is a strip-like flexible member and whose width is shorter than the vertical dimension of the FPC storage space 26 is connected to the image sensor substrate 95. The FPC 97 extends from the image pickup device substrate 95 toward the left side, and an intermediate portion thereof is a folded portion 98 that is bent in the illustrated manner. The folding part 98 has a movable part 99 bent forward and a restrained part 100 bent backward from the front end part of the movable part 99 (substantially parallel to the movable part 99). is doing. Further, a leading portion 101 bent forward is extended from the rear end portion of the held portion 100, and a leading end connecting portion 102 extends to the left side from the leading end of the leading portion 101. The folding portion 98 of the FPC 97 is inserted into the FPC storage space 26 of the outer case 21 from the rear. The lead-out portion 101 is pulled out to the left side of the outer case 21, and the pair of fixing holes 103 are fitted into the fixing protrusions 22 and 23 of the outer case 21, respectively. It is fixed in contact with the surface.
The Y-direction guide rod 61, Y-stage 63, nut 66, X-direction guide rod 76, X-stage 77, X-direction support shaft 83, X-direction drive member 85, pressing roller 87, nut 91, screw 93, image sensor described above. 94, the image pickup device substrate 95, the FPC 97, the Y-direction drive motor M3, the X-direction drive motor M4, the tension spring S1, and the tension spring S2 are components of the vibration isolation block 60.

A rear cover (cover member) 105 formed by processing a metal plate is attached to the rear surface of a pair of upper and lower rear walls 104 that form part of the outer case 21. A screw-fastening hole 106 is drilled in the right end portion of the back cover 105, a substantially square image sensor escape hole 107 is drilled in the center, and three screws are provided around the image sensor escape hole 107. A relief hole 108 is formed. Further, a pair of pressing claws (pressing means) 109 extending toward the front is provided in a substantially central portion of the left edge portion of the back cover 105, and left and right ends of the left edge portion of the back cover 105 are on the left side. A pair of locking claws 110 extending toward the top are projected.
The back cover 105 locks the pair of locking claws 110 into a pair of upper and lower locking holes 32 formed on the rear surface of the outer case 21, and then inserts a screw 111 inserted through the screw hole 106 into the rear surface of the outer case 21. The outer peripheral case 21 is fixed to the outer peripheral case 21 in such a manner that the rear surface opening of the outer peripheral side case 21 is closed by screwing into the female screw hole formed on the outer peripheral side case 21, and the outer peripheral side case 21 and the inner peripheral side case 28 are reinforced strongly. . When the back cover 105 is fixed to the outer case 21, the rear part of the image sensor 94 is located inside the image sensor escape hole 107, and the heads of the three screws 93 are located inside the three screw escape holes 108, respectively. . Further, as shown in FIG. 13, the pair of pressing claws 109 enter between the movable portion 99 and the restrained portion 100 in the FPC storage space 26 and contact the surface of the restrained portion 100 facing the movable portion 99. The pressed portion 100 is pressed against the left side surface of the FPC storage space 26 (the surface facing the suppressed portion 100) to restrict the pressed portion 100 from moving away from the left side surface of the FPC storage space 26 to the right side. Accordingly, the outer case 21 (and the rear wall 104), the components disposed in the outer case 21 and the inner case 28 among the components of the lens block 20 and the vibration isolation block 60 are the outer case. 21 and the inner peripheral side case 28 are prevented from falling off. Further, since the back cover 105 is provided, it is possible to prevent the assembly operator from touching the vibration isolation block 60 by mistake when mounting the lens barrel assembly 15 to the case 11.
An FPC 113 that is bent in accordance with the shape of these members is placed on the outer case 21, the inner case 28, the rear wall 104, and the back cover 105. Two fixing holes 114 are formed in the vicinity of the left end portion of the FPC 113, and the vicinity of the left end portion of the FPC 113 is arranged on the outer peripheral side by fitting each fixing hole 114 to the fixing protrusions 23 and 24 of the outer case 21. The case 21 is fixed to the left side surface. The front end connecting portion 115 forming the left end portion of the FPC 113 is bent so as to be parallel to the front end connecting portion 102, and the right end portion of the FPC 113 is connected to the zoom motor M1 and the focus motor M2.
The lens block 20, the anti-vibration block 60, the back cover 105, the screw 111, and the FPC 113 described above are components of the lens barrel assembly 15.

The front end connection portion 102 of the FPC 97 and the front end connection portion 115 of the FPC 113 are connected to a circuit board (not shown) disposed in the internal space of the case 11, and the circuit board includes a battery built in the case 11 and various operation switches. (Release button, zoom switch, etc.) Since the FPC 97 (drawer 101) and the FPC 113 are fixed to the outer case 21 as described above, the end of the FPC 97, 113 on the circuit board side when the end of the FPC 97, 113 is connected to the circuit board. Is pulled, the pulling force does not reach the opposite ends of the FPCs 97 and 113, so that the image pickup element 94, zoom motor M1, and focus motor M2 to which the opposite ends are connected are adversely affected. Never reach.
Further, in the case 11, there is an image blur that detects a moving angular velocity around two axes in the X and Y directions (X axis and Y axis of the digital camera 10) orthogonal to each other in a plane orthogonal to the optical axis A. A detection sensor (not shown) is provided, and the magnitude and direction of shake applied to the digital camera 10 is detected by the image shake detection sensor. The control circuit of the circuit board obtains a movement angle by time-integrating the angular velocities in the X-axis direction and the Y-axis direction detected by the image shake detection sensor, and calculates the X on the imaging surface of the image sensor 94 from the movement angle. The amount of movement of the image in the axial direction and the Y-axis direction is calculated, and the driving amount and driving direction (Y-direction driving motors M3, X) of the Y stage 63 and the X stage 77 with respect to each axial direction for canceling the image blur. The driving pulse of the direction driving motor M4 is calculated. Based on this calculated value, the Y-direction driving motor M3 and the X-direction driving motor M4 are driven and controlled. Thereby, the Y stage 63 and the X stage 77 are each driven by a predetermined amount in a predetermined direction so as to cancel the shake of the optical axis A, and the image position on the imaging surface of the imaging element 94 is kept constant. The case 11 is provided with an anti-vibration switch (not shown) connected to the circuit board. When the anti-vibration switch is turned on, the digital camera 10 enters an image shake correction mode. The shake correction function stops and the normal shooting mode is set.

Next, the operation of the digital camera 10 will be described.
When the main power switch provided on the case 11 is OFF, the digital camera 10 has the third group support frame 33, the cam ring 34, the second group support frame 41, the first group support frame 48, and the rectilinear guide ring 53 in the retracted position. In the retracted state shown in FIG. 7, the barrier blade 50 closes the front through hole 49.
When the main power switch of the digital camera 10 is turned on, a normal rotation signal is sent from the control circuit of the circuit board to the zoom motor M1 via the FPC 113, and therefore via the zoom motor M1 and a power transmission mechanism (not shown). The pair of barrier blades 50 that are linked together open in a direction to open the front through hole 49, and the cam ring 34, the second group support frame 41, and the first group support frame 48 reach the wide end position shown in FIG. Stretch. Further, when the zoom switch provided on the case 11 is operated after reaching the wide end position, the third group support frame 33, the cam ring 34, the second group support frame 41, the first group support frame 48, and the linear guide ring 53 are moved to the wide end position. And telescopic end position. Further, when the digital camera 10 is set to the AF (autofocus) mode by the operation button provided on the case 11, the focus motor M2 is rotated by the control of the AF control device (consisting of the circuit board etc.) built in the digital camera 10. The third group support frame 33 (third lens group L3) moves forward and backward in the direction of the optical axis A.

If the digital camera 10 is set to the image blur correction mode by turning on the image stabilization switch, the control circuit on the circuit board cancels the shake of the optical axis A when the camera shake occurs in the digital camera 10. A predetermined pulse signal is sent to the direction driving motor M3 and the X direction driving motor M4 to rotate the Y direction driving motor M3 and the X direction driving motor M4. When the rotational drive shaft M3a rotates by driving the Y-direction drive motor M3, the nut 66 advances and retreats in the Y direction. Then, the power receiving portion 65 moves forward and backward in the Y direction together with the nut 66, so that the Y stage 63 slides in the Y direction along the Y direction guide rod 61. On the other hand, when the rotational drive shaft M4a rotates by driving the X-direction drive motor M4, the nut 91 advances and retreats in the X direction. Then, the power receiving portion 89 advances and retreats in the X direction together with the nut 91, so that the X stage 77 in which the tip surface of the arm 79 is in contact with the pressing roller 87 slides in the X direction by the driving force received from the pressing roller 87. To do.
If the release button is fully pressed with the image blur canceled in this way, an electrical signal is sent from the circuit board to the image sensor 94 via the FPC 97 and the image sensor substrate 95, and the image sensor 94 detects the subject. Take an image with no image blur.

  When the main power switch of the digital camera 10 is turned off after the photographing is completed, the control circuit of the circuit board sends a reverse rotation signal to the zoom motor M1, whereby the third group support frame 33, the cam ring 34, the second group support frame 41, 1 The group support frame 48 and the rectilinear guide ring 53 return to the retracted position, and the barrier blade 50 closes the front through hole 49.

In the present embodiment described above, since the folding part 98 is inserted into the FPC storage space 26, the folding part 98 is not exposed to the outside, and the folding part 98 is not touched during assembly. The assembly of the tube assembly 15 is easy.
Further, since the lead-out portion 101 of the FPC 97 is bent toward the front which is a direction away from the movable portion 99 (optical axis A) with respect to the extension direction (backward) of the suppressed portion 100, An elastic force is generated that tends to approach the movable portion 99 side. Therefore, in the case where no contrivance is applied to the FPC 97, when the movable part 99 is deformed (moved) in the FPC storage space 26 as the Y stage 63 or the X stage 77 moves, the movable part 99 and the restrained part 100 are moved. Are likely to rub against each other in the FPC storage space 26 (particularly when the FPC storage space 26 is narrow), but the pressed portion 100 is pressed against the inner surface (outer wall 21a) of the FPC storage space 26 by a pair of pressing claws 109. Therefore, even when the FPC storage space 26 is narrow, it is possible to effectively prevent the movable portion 99 and the suppressed portion 100 from rubbing each other.
Further, a cover member that closes the rear surfaces of the outer case 21 and the inner case 28, a reinforcing member for the outer case 21 and the inner case 28, and when an assembly worker attaches the lens barrel assembly 15 to the case 11. The back cover 105 that functions as a member for preventing the vibration isolating block 60 from being touched is also used as a pressing means for pressing the pressed portion 100 of the FPC 97 against the outer wall 21a side of the FPC storage space 26. Less.

As mentioned above, although this invention was demonstrated based on the said embodiment, this invention can be implemented, giving various changes.
For example, the technical idea of the present invention is that the drawing direction (bending direction) of the drawing portion 101 is on the left side of the extending direction of the restrained portion 100 (the side away from the optical axis A with respect to the extending direction (rear) of the restrained portion 100). ) To solve the problem caused by the bending (elastic force) of the restrained portion 100 to the movable portion 99 side that occurs when bent. Therefore, for example, the drawer portion 101 may be pulled out from the rear end of the restrained portion 100 toward the left side, and in this case, the restrained portion 100 generates an elastic force that tends to approach the movable portion 99 side. Therefore, it is possible to prevent the movable portion 99 and the suppressed portion 100 from rubbing against each other.
Further, the holding portion 100 may be completely fixed to the outer wall 21a by increasing the pressing force of the back cover 105 against the holding portion 100 by the holding claws 109.
Further, the folding part 98 of the FPC 97 does not have to be a two-piece structure of the movable part 99 and the restrained part 100, and may be a folded structure of three or more sheets. Regardless of the number of FPCs 97 (folding portions 98), the same effect as described above can be obtained by fixing the portion located at one end in the thickness direction of the FPC 97 to the inner surface of the FPC storage space 26. .
Furthermore, the present invention may be applied to optical equipment other than the digital camera 10.
A lens unit including a correction lens and an electrical component may be mounted on the X stage 77 instead of the image sensor 94, and one end of the FPC 97 may be connected to the electrical component.
Further, the FPC storage space 26 may be a hole that penetrates the outer case 21 in the front-rear direction.

10 Digital camera (optical equipment)
11 Case (camera body)
12 Lens barrel opening 15 Lens barrel assembly 20 Lens block 21 Outer peripheral side case (fixed case)
21a Outer wall (second wall)
22 23 24 Fixed protrusion 25X 25Y Recess 26 for motor mounting FPC storage space (storage space)
26a Opening 27X X direction bearing 27Y Y direction bearing 28 Inner peripheral side case (fixed case)
28a Auxiliary wall (first wall)
29 Motor mounting recess 30 Lens barrel guide hole 31A 31B Cam ring cam groove 32 Locking hole 33 Group 3 support frame 34 Cam ring 35 Group 2 cam groove 36 Group 1 cam groove 37A 37B Cam follower 38 Driven gear 41 2 Group support frame 42 Front through hole 43 Cam follower 48 First group support frame 49 Front through hole 50 Barrier blade 51 Cam follower 53 Straight guide ring 60 Anti-vibration block 61 Y direction guide rod 63 Y stage 64 Y direction guide hole 65 Power receiving part 65a Circular hole 66 Nut 66a Female thread hole 67 Y direction bearing 68 X stage storage hole 70 X direction flange 71 X direction guide hole 73 Recess for arm 76 X direction guide rod 77 X stage 78 Image sensor holding part 79 Arm 80 X direction bearing 83 X-direction support shaft 85 X-direction drive member 86 Roller support portion 87 Press roller 89 Power receiving portion 89a Circular hole 9 The supported portion 91 nut 91a internally threaded hole 91b annular ridge 93 screw 94 imaging device 95 imaging element substrate 97 FPC (flexible printed circuit board)
98 Folding part 99 Movable part 100 Controlled part 101 Pull-out part 102 Tip connection part 103 Fixing hole 104 Rear wall 105 Back cover (cover member)
106 Screw fixing hole 107 Image sensor escape hole 108 Screw escape hole 109 Holding claw (holding means)
110 Claw 111 Screw 113 FPC (Flexible Printed Circuit Board)
114 Fixing hole 115 Tip connection portion A Optical axis L1 First lens group L2 Second lens group L3 Third lens group M1 Zoom motor M2 Focusing motor M3 Y-direction driving motor M3a Rotation driving shaft M4 X-direction driving motor M4a Rotation drive shaft S1 S2 Tension spring

Claims (7)

A fixed case fixed inside the optical instrument;
A stage that is accommodated in the fixed case so as to be movable in a direction perpendicular to the optical axis of the optical device, and that includes a lens unit that includes a lens and an electrical component, and one of the image sensors,
A flexible FPC that connects one end to the lens unit or the image sensor and supplies power to the electrical component or the image sensor;
In an anti-vibration unit comprising:
A storage space formed between the first wall and the second wall arranged in a direction perpendicular to the optical axis, provided in the fixed case;
A movable part that is movable in the storage space, which is bent so as to be inserted into the storage space, at the intermediate part in the longitudinal direction of the FPC, and the restrained part that is folded back from the front end of the movable part in the storage space And a lead-out portion that is pulled out to the outside of the case while being bent toward the direction away from the optical axis with respect to the extending direction of the restrained portion from the tip portion of the restrained portion;
Pressing means for pressing the suppressed portion against the second wall side opposite to the movable portion;
An anti-vibration unit in an optical apparatus comprising: In the vibration isolating unit in the optical apparatus according to claim 1,
An optical system comprising: a cover member that closes the opening of the one surface while allowing the FPC to be pulled out from the internal space of the fixed case by being fixed to one surface of the fixed case in the optical axis direction. Anti-vibration unit in equipment. In the vibration isolating unit in the optical apparatus according to claim 2,
An anti-vibration unit in an optical apparatus, wherein the pressing means is a pressing claw that is formed in the cover member and protrudes into the storage space and sandwiches a part of the suppressed portion between the second wall. In the anti-vibration unit in the optical apparatus according to any one of claims 1 to 3,
The anti-vibration unit in an optical apparatus in which the drawing portion is drawn in a direction substantially the same as an insertion direction of the movable portion with respect to the storage space. In the vibration isolating unit in the optical apparatus according to any one of claims 1 to 4,
An anti-vibration unit in an optical apparatus in which a part of the drawer portion is fixed to a surface of the second wall opposite to the first wall. In the anti-vibration unit in the optical device according to any one of claims 1 to 5,
The fixed case includes an outer peripheral case and an inner peripheral case,
An anti-vibration unit in an optical apparatus in which the first wall is configured by an inner peripheral case and the second wall is configured by an outer peripheral case. A vibration isolation unit in the optical apparatus according to any one of claims 1 to 6,
A lens block having a lens group that defines the optical axis, integrated with the image stabilization unit;
A lens barrel assembly comprising:

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