JP4934564B2

JP4934564B2 - Imaging device

Info

Publication number: JP4934564B2
Application number: JP2007263958A
Authority: JP
Inventors: 茂入沢
Original assignee: Ricoh Co Ltd
Current assignee: Ricoh Co Ltd
Priority date: 2007-03-16
Filing date: 2007-10-10
Publication date: 2012-05-16
Anticipated expiration: 2027-10-10
Also published as: JP2008262151A

Description

本発明は、撮影時の手ぶれを補正する手ぶれ補正機能を備えているデジタルスチルカメラやデジタルビデオカメラ（以下、「デジタルカメラ」という）等の撮像装置に関する。 The present invention relates to an imaging apparatus such as a digital still camera or a digital video camera (hereinafter referred to as “digital camera”) having a camera shake correction function for correcting camera shake during shooting.

撮影レンズ系を通して被写体像を撮像素子（ＣＣＤなど）に受光させ、撮像素子からの画像信号に基づいて被写体像に対応したデジタル画像を生成するデジタルカメラにおいて、近年、撮影時の手ぶれを補正する手ぶれ補正機能を備えた、いわゆる手ぶれ補正機能付きデジタルカメラが実用化されている。 In recent years, in a digital camera that generates a digital image corresponding to a subject image on the basis of an image signal from the image pickup device (CCD or the like) by receiving an image of the subject through a photographing lens system, a camera shake that corrects camera shake at the time of shooting. Digital cameras with a so-called camera shake correction function having a correction function have been put into practical use.

従来、デジタルカメラにおける手ぶれ補正手段としては、例えば、手ぶれによって生じる被写体像のぶれ量に応じて、撮像素子（ＣＣＤなど）を撮影光学系の光軸方向に垂直な面内（Ｘ−Ｙ平面）で移動させる構造が採用されている（例えば、特許文献１参照）。 2. Description of the Related Art Conventionally, as a camera shake correction unit in a digital camera, for example, an imaging element (CCD or the like) is in a plane perpendicular to the optical axis direction of an imaging optical system (XY plane) according to the amount of blur of a subject image caused by camera shake. The structure to which it moves is employ | adopted (for example, refer patent document 1).

前記特許文献１のような手ぶれ補正構造では、光軸方向に垂直で互いに直交する２方向（Ｘ−Ｙ方向）にそれぞれ移動可能に配置した２つのスライダを備え、前記２つのスライダ上に撮像素子が設置されており、手ぶれによって生じる被写体像のぶれ量に応じて２つのスライダを移動させることで、撮像素子を光軸方向に垂直な面内で移動させて手ぶれを補正する。
特開２００４−２７４２４２号公報 The camera shake correction structure as described in Patent Document 1 includes two sliders arranged to be movable in two directions (XY directions) perpendicular to the optical axis direction and orthogonal to each other, and an image sensor on the two sliders. Is moved, and the two sliders are moved in accordance with the amount of blur of the subject image caused by camera shake, thereby moving the image sensor in a plane perpendicular to the optical axis direction to correct camera shake.
JP 2004-274242 A

前記したような手ぶれ補正構造では、前記２つのスライダに連結された駆動手段（モータ、圧電素子など）への通電により２つのスライダに対して移動制御を行っている。ところで、駆動手段への通電をＯＦＦにして手ぶれ補正動作を解除しているときに、一方のスライダ側に保持されている撮像素子は、その中心位置が重力などの外乱によって光軸からずれてしまう不具合が発生する。 In the camera shake correction structure as described above, movement control is performed on the two sliders by energizing driving means (motor, piezoelectric element, etc.) connected to the two sliders. By the way, when the power supply to the driving unit is turned off and the camera shake correction operation is canceled, the center position of the image sensor held on one slider side is shifted from the optical axis due to disturbance such as gravity. A malfunction occurs.

このため、手ぶれ補正動作を解除しているときでも、駆動手段へ通電して一方のスライダ側に保持されている撮像素子の中心位置が光軸上に位置するように制御することも可能であるが、消費電力を浪費してしまう。 For this reason, even when the camera shake correction operation is cancelled, it is also possible to control so that the center position of the imaging element held on one slider side is positioned on the optical axis by energizing the driving means. However, power consumption is wasted.

そこで、本願発明者らは、手ぶれ補正動作をＯＦＦにしているときは、撮像素子の中心位置（原点位置）を光軸上に機械的に保持する原点位置強制保持機構を備えた撮像装置を提案している（未公開の特願２００５−３０５８４１号明細書（［００９７］、図９、図１２（ａ）等参照）。この撮像装置では、手ぶれ補正動作をＯＦＦにしているときは、前記原点位置強制保持機構のステッピングモータ（ＳＴＭ１）の駆動により光軸方向に沿って往復動自在な強制押さえ板（２６）の先端に固着した押さえピン（３３）を凹所（１９ａ）に嵌合させることによって、機械的に撮像素子の中心位置を光軸上に固定することができる。これにより、手ぶれ補正動作用の駆動手段への通電をＯＦＦにすることができるので、消費電力の低減を図ることができる。 Accordingly, the inventors of the present application have proposed an image pickup apparatus including an origin position forced holding mechanism that mechanically holds the center position (origin position) of the image sensor on the optical axis when the camera shake correction operation is turned off. (See unpublished Japanese Patent Application No. 2005-305841 (see [0097], FIG. 9, FIG. 12A, etc.) In this imaging apparatus, when the camera shake correction operation is turned off, the origin is A pressing pin (33) fixed to the tip of a forced pressing plate (26) that can reciprocate along the optical axis direction by driving a stepping motor (STM1) of a position forced holding mechanism is fitted in the recess (19a). Thus, it is possible to mechanically fix the center position of the image sensor on the optical axis, thereby turning off the power to the driving means for the camera shake correction operation, thereby reducing power consumption. Can.

ところで、前記未公開の特願２００５−３０５８４１号明細書の撮像装置では、撮像素子よりも光軸方向の物体と反対側（ベース部材１１の背面側）に原点位置強制保持機構の一部である強制押さえ板が配置されている。強制押さえ板は、撮像素子よりも光軸方向の物体と反対側の空間において光軸方向に移動する。このため、この撮像装置では、撮像素子よりも光軸方向の物体と反対側に、強制押さえ板が移動するためのスペースが必要となる。 By the way, in the imaging device of the unpublished Japanese Patent Application No. 2005-305841, it is a part of the origin position forced holding mechanism on the side opposite to the object in the optical axis direction (back side of the base member 11) from the imaging element. A forced holding plate is arranged. The forced pressing plate moves in the optical axis direction in a space opposite to the object in the optical axis direction than the image sensor. For this reason, in this imaging device, a space for moving the forced pressing plate to the side opposite to the object in the optical axis direction from the imaging element is required.

そこで、本発明は、手ぶれ補正手段を備えた撮像装置において、撮像素子よりも光軸方向の物体と反対側に強制押さえ板（本発明の固定レバーに相当）が移動するためのスペースを不要にして、鏡胴の光軸方向の厚さを薄くすることができる撮像装置を提供することを目的とする。 Therefore, the present invention eliminates the need for a space for the forced presser plate (corresponding to the fixed lever of the present invention) to move to the side opposite to the object in the optical axis direction relative to the image sensor in an imaging apparatus equipped with camera shake correction means. An object of the present invention is to provide an imaging apparatus capable of reducing the thickness of the lens barrel in the optical axis direction.

前記目的を達成するために請求項１に記載の発明は、光電変換により被写体像を電気信号に変換する撮像素子と、前記撮像素子上に被写体像を結像させる撮影光学系と、前記撮影光学系が設けられ、前記撮影光学系の光軸方向に伸縮自在な鏡胴と、前記撮像素子を前記光軸に対して垂直な面内で移動自在に保持した枠部材と、前記枠部材を前記光軸に対して垂直な面内で移動させて手ぶれ補正を行う手ぶれ補正手段と、を有する撮像装置において、前記撮像素子を所定の位置に保持する保持手段を備え、前記保持手段は、一端側が前記枠部材近傍まで延び、他端側が前記鏡胴の外側に位置する固定レバーと、前記固定レバーの一端側を略前記光軸方向に揺動自在に保持した軸部材と、前記固定レバーの一端側に設けられ、前記枠部材に設けた係合凹部に離脱自在に係合させて前記枠部材の移動を規制する係合部材と、前記固定レバーの他端側に設けられ、前記軸部材を揺動支点して前記固定レバーの一端側を略前記光軸方向に揺動させる固定レバー揺動手段と、を備え、前記鏡胴が被写体側に繰出されて前記鏡胴と前記枠部材との間に所定の空間が形成されるときに、前記固定レバー揺動手段の作動により前記固定レバーの一端側を略前記光軸方向に揺動させることを特徴としている。 In order to achieve the above object, the invention according to claim 1 is an image sensor that converts a subject image into an electrical signal by photoelectric conversion, a photographing optical system that forms a subject image on the image sensor, and the photographing optical device. A lens barrel that can be expanded and contracted in the optical axis direction of the imaging optical system, a frame member that holds the image sensor movably in a plane perpendicular to the optical axis, and the frame member An image stabilization apparatus that performs image stabilization by moving in a plane perpendicular to the optical axis, and includes a holding unit that holds the image sensor at a predetermined position. A fixed lever that extends to the vicinity of the frame member, the other end of which is located outside the lens barrel, a shaft member that holds one end of the fixed lever so as to be swingable substantially in the optical axis direction, and one end of the fixed lever Provided on the side and provided on the frame member An engaging member that removably engages with the mating recess and restricts movement of the frame member, and is provided on the other end side of the fixed lever. The shaft member is pivoted to support one end side of the fixed lever. A fixed lever swinging means for swinging substantially in the optical axis direction, and when the lens barrel is extended toward the subject side and a predetermined space is formed between the lens barrel and the frame member, The one end side of the fixed lever is swung substantially in the optical axis direction by the operation of the fixed lever swinging means.

また、請求項２に記載の発明は、固定レバー揺動手段を、前記鏡胴を内側に設けた筒部材の外面側に設置したことを特徴としている。 The invention according to claim 2 is characterized in that the fixed lever swinging means is installed on the outer surface side of the cylindrical member provided with the lens barrel inside.

また、請求項３に記載の発明は、前記係合部材の一端側が球面状に形成されていることを特徴としている。 The invention according to claim 3 is characterized in that one end side of the engaging member is formed in a spherical shape.

また、請求項４に記載の発明は、前記係合凹部が、正方形形状の底部から光軸方向の物体側の正方形形状の開口端に向けて広がるように傾斜していることを特徴としている。 The invention according to claim 4 is characterized in that the engaging recess is inclined so as to spread from the bottom of the square shape toward the square-shaped opening end on the object side in the optical axis direction.

また、請求項５に記載の発明は、前記係合凹部が、円形形状の底部から光軸方向の物体側の円形形状の開口端に向けて広がるように傾斜していることを特徴としている。 The invention according to claim 5 is characterized in that the engaging recess is inclined so as to spread from a circular bottom portion toward a circular opening end on the object side in the optical axis direction.

また、請求項６に記載の発明は、前記固定レバーの略前記光軸方向に沿ってガイド孔を設けるとともに、前記ベース板の光軸方向の物体側に前記ガイド孔に挿通自在なガイドピンを設けたことを特徴としている。 According to a sixth aspect of the present invention, a guide hole is provided substantially along the optical axis direction of the fixed lever, and a guide pin that can be inserted into the guide hole is provided on the object side of the base plate in the optical axis direction. It is characterized by providing.

また、請求項７に記載の発明は、前記固定レバーの前記軸部材よりも光軸方向の物体側を前記ベース板側に付勢する第１付勢部材を設けたことを特徴としている。 The invention according to claim 7 is characterized in that a first urging member for urging the object side in the optical axis direction to the base plate side with respect to the shaft member of the fixed lever is provided.

また、請求項８に記載の発明は、前記固定レバーの前記ガイド孔近傍を、前記固定レバーの長手方向に対して直交する方向に付勢する第２付勢部材を設けたことを特徴としている。 The invention according to claim 8 is characterized in that a second urging member is provided to urge the vicinity of the guide hole of the fixed lever in a direction orthogonal to the longitudinal direction of the fixed lever. .

また、請求項９に記載の発明は、前記固定レバー揺動手段は、前記光軸方向に移動自在に保持され、前記ベース板側の一端側に前記固定レバーの他端側を連結した作動軸と、前記作動軸の周面に回転自在にかつ前記光軸方向に移動自在に緩挿されたカム部材と、前記カム部材を回転させる回転駆動手段と、前記カム部材の前記ベース板側の面に形成されたカム面と、前記ベース板側から前記カム面に当接するカムフォロアと、前記カムフォロアの一端側に前記カム面を付勢する第３付勢部材と、を備え、前記回転駆動手段の正逆回転駆動で前記カム部材を正逆回転させることにより、前記カム面を前記カムフォロアに摺接させて前記カム部材と一体的に前記作動軸を往復移動させ、他端側が連結されている前記固定レバーを揺動させることを特徴としている。 According to a ninth aspect of the present invention, the fixed lever swinging means is held so as to be movable in the optical axis direction, and an operating shaft in which the other end side of the fixed lever is connected to one end side on the base plate side. A cam member loosely inserted on the peripheral surface of the operating shaft so as to be rotatable and movable in the direction of the optical axis, a rotation driving means for rotating the cam member, and a surface on the base plate side of the cam member A cam surface formed on the base plate side and a third urging member for urging the cam surface toward one end of the cam follower, By rotating the cam member forward / reversely by forward / reverse rotation driving, the cam surface is slidably contacted with the cam follower to reciprocate the operating shaft integrally with the cam member, and the other end side is connected. Oscillate the fixed lever. It is a symptom.

また、請求項１０に記載の発明は、前記作動軸の前記ベース板側の一端側の周面にねじ溝を有し、前記ねじ溝に噛合するレバー受部材に前記固定レバーの他端側を連結することを特徴としている。 According to a tenth aspect of the present invention, there is provided a thread groove on a circumferential surface of the one end side on the base plate side of the operating shaft, and the other end side of the fixed lever is connected to a lever receiving member engaged with the thread groove. It is characterized by connecting.

また、請求項１１に記載の発明は、前記作動軸の前記ベース板側を前記カム部材側に付勢する第４付勢部材を有することを特徴としている。 The invention according to claim 11 is characterized in that it has a fourth urging member for urging the base plate side of the operating shaft toward the cam member side.

請求項１に記載の発明によれば、撮像素子よりも光軸方向の物体と反対側に、固定レバー（前記強制押さえ板に相当）が移動するためのスペースを設ける必要がなくなり、鏡胴の光軸方向の厚さを薄くすることができる。 According to the first aspect of the present invention, it is not necessary to provide a space for moving the fixing lever (corresponding to the forced pressing plate) on the side opposite to the object in the optical axis direction from the image pickup device. The thickness in the optical axis direction can be reduced.

請求項２に記載の発明によれば、固定レバー揺動手段を容易に設置することができる。 According to invention of Claim 2, a fixed lever rocking | fluctuation means can be installed easily.

請求項３に記載の発明によれば、係合部材の一端側が球面状に形成したことにより、係合部材を係合凹部に円滑に係合することができる。 According to the invention described in claim 3, since the one end side of the engaging member is formed in a spherical shape, the engaging member can be smoothly engaged with the engaging recess.

請求項４、５に記載の発明によれば、係合部材を係合凹部に円滑に係合させることができる。 According to invention of Claim 4, 5, an engagement member can be smoothly engaged with an engagement recessed part.

請求項６に記載の発明によれば、固定レバーの略光軸方向に沿ってガイド孔を設けてこのガイド孔にガイドピンを挿通させることにより、固定レバーの光軸に対して垂直方向へのガタツキを小さくすることができる。 According to the sixth aspect of the present invention, the guide hole is provided substantially along the optical axis direction of the fixed lever, and the guide pin is inserted through the guide hole so that the guide lever extends in the direction perpendicular to the optical axis of the fixed lever. The backlash can be reduced.

請求項７に記載の発明によれば、第１付勢部材による付勢により係合部材を係合凹部に良好に係合させることができる。 According to the seventh aspect of the invention, the engaging member can be favorably engaged with the engaging recess by the urging by the first urging member.

請求項８に記載の発明によれば、第２付勢部材による付勢によって、固定レバーの光軸に対して垂直方向へのガタツキをより小さくすることができる。 According to the eighth aspect of the present invention, the backlash in the direction perpendicular to the optical axis of the fixed lever can be further reduced by the biasing by the second biasing member.

請求項９に記載の発明によれば、作動軸を簡易な構成で容易に往復移動させて、他端側が連結されている固定レバーを揺動させることができる。 According to the ninth aspect of the present invention, the operating shaft can be easily reciprocated with a simple configuration, and the fixed lever to which the other end is connected can be swung.

請求項１０に記載の発明によれば、レバー受部材が作動軸に噛合しているので、レバー受部材の軸方向の位置を容易に調整すること可能となり、固定レバーを精度よく揺動させることができる。 According to the tenth aspect of the present invention, since the lever receiving member meshes with the operating shaft, the axial position of the lever receiving member can be easily adjusted, and the fixed lever can be swung accurately. Can do.

請求項１１に記載の発明によれば、第４付勢部材による付勢によって、作動軸をガタツキなく往復移動させることができる。 According to the eleventh aspect of the present invention, the operating shaft can be reciprocated without rattling by the urging by the fourth urging member.

以下、本発明を図示の実施形態に基づいて説明する。
〈実施形態１〉 Hereinafter, the present invention will be described based on the illustrated embodiments.
<Embodiment 1>

図１は、本発明の実施形態１に係る撮像装置としてのデジタルカメラの一例を示す正面図である。なお、このデジタルカメラ１は、撮像素子を光軸方向に垂直な面内で移動させて手ぶれを補正する手ぶれ補正機能を有している。 FIG. 1 is a front view showing an example of a digital camera as an imaging apparatus according to Embodiment 1 of the present invention. The digital camera 1 has a camera shake correction function for correcting camera shake by moving the image sensor in a plane perpendicular to the optical axis direction.

図１に示すように、このデジタルカメラ１は、カメラ本体２の前面側に撮影レンズ系３を取付けたレンズ鏡胴４が設けられており、このレンズ鏡胴４は、所定の沈胴位置と所定の撮像待機位置との間で撮影レンズ系３の光軸（以下、単に光軸という）に沿って移動可能である。撮影レンズ系３は、不図示の固定レンズ、ズームレンズ、フォーカスレンズなどを備えている。また、レンズ鏡胴４には、前記撮影レンズ系３以外にもシャッタユニットや絞りユニット等が設置されている。 As shown in FIG. 1, the digital camera 1 is provided with a lens barrel 4 having a photographing lens system 3 attached to the front side of the camera body 2, and the lens barrel 4 has a predetermined retracted position and a predetermined position. It is possible to move along the optical axis of the taking lens system 3 (hereinafter, simply referred to as the optical axis) between the imaging standby position of the camera and the imaging standby position. The taking lens system 3 includes a fixed lens, a zoom lens, a focus lens, and the like (not shown). In addition to the photographing lens system 3, the lens barrel 4 is provided with a shutter unit, a diaphragm unit, and the like.

レンズ鏡胴４は、図２に示すように、レンズ鏡胴収納筒部５の内側に設置されている。レンズ鏡胴収納筒部５は、カメラ本体２内に設置したベース板６の前面側に一体的に形成されている。レンズ鏡胴収納筒部５の内周面に形成されたヘリコイド状のカム溝（不図示）にレンズ鏡胴４の外周面に形成されたヘリコイド状のカムフォロア（不図示）が係合されており、レンズ鏡胴駆動ユニット（不図示）による駆動力によって、レンズ鏡胴４が所定の沈胴位置と所定の撮像待機位置との間で光軸（Ｚ軸）方向に沿って移動する。なお、図２は、レンズ鏡胴４がレンズ鏡胴収納筒部５内の沈胴位置に収納されている状態である。 As shown in FIG. 2, the lens barrel 4 is installed inside the lens barrel storage cylinder portion 5. The lens barrel storage cylinder 5 is integrally formed on the front side of the base plate 6 installed in the camera body 2. A helicoid cam follower (not shown) formed on the outer peripheral surface of the lens barrel 4 is engaged with a helicoid cam groove (not shown) formed on the inner peripheral surface of the lens barrel housing cylinder 5. The lens barrel 4 moves along the optical axis (Z-axis) direction between a predetermined retracted position and a predetermined imaging standby position by a driving force of a lens barrel driving unit (not shown). FIG. 2 shows a state in which the lens barrel 4 is housed in the retracted position in the lens barrel housing cylinder 5.

図３は、ベース板６の前面側を示す概略斜視図、図４は、図３のＡ−Ａ線断面図、図５は、ベース板６に一体的に形成したレンズ鏡胴収納筒部５の外観を示す斜視図である。なお、図３〜図５では、レンズ鏡胴収納筒部５内のレンズ鏡胴４は省略している。 3 is a schematic perspective view showing the front side of the base plate 6, FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3, and FIG. 5 is a lens barrel housing cylinder portion 5 formed integrally with the base plate 6. It is a perspective view which shows the external appearance. 3 to 5, the lens barrel 4 in the lens barrel storage cylinder portion 5 is omitted.

図３に示すように、レンズ鏡胴収納筒部５内の中央部に位置するベース板６の表面上には、ＣＣＤ等の撮像素子７を保持した撮像素子保持枠８と、撮像素子保持枠８（撮像素子７）を光軸方向に垂直な面内で移動させて手ぶれを補正する手ぶれ補正機構９と、撮像素子保持枠８の光軸と垂直方向に対する移動を機械的に規制して保持する保持機構１０が設置されている。 As shown in FIG. 3, an image sensor holding frame 8 holding an image sensor 7 such as a CCD, and an image sensor holding frame are provided on the surface of a base plate 6 positioned at the center in the lens barrel housing cylinder 5. 8 (image sensor 7) is moved in a plane perpendicular to the optical axis direction to correct camera shake, and the movement of the image sensor holding frame 8 in the direction perpendicular to the optical axis is mechanically restricted and held. A holding mechanism 10 is installed.

（手ぶれ補正機構９の構成）
手ぶれ補正機構９は、撮像素子保持枠８を移動自在に保持したスライド枠１１を備えており、スライド枠１１は、レンズ鏡胴収納筒部５内のベース板６上に設けたスライド保持枠１２の内側に移動自在に保持されている。撮像素子保持枠８は、スライド枠１１に設けた一対のガイド棒１３ａ，１３ｂに挿通されてＸ軸方向（図３の上下方向）に移動自在に保持されている。スライド枠１１は、スライド保持枠１２に設けた一対のガイド棒１４ａ，１４ｂに挿通されてＹ軸方向（図３の左右方向）に移動自在に保持されている。 (Configuration of the image stabilization mechanism 9)
The camera shake correction mechanism 9 includes a slide frame 11 that movably holds the image sensor holding frame 8, and the slide frame 11 is provided on a base plate 6 in the lens barrel storage cylinder portion 5. Is held movably inside. The image sensor holding frame 8 is inserted through a pair of guide bars 13a and 13b provided on the slide frame 11 and is held so as to be movable in the X-axis direction (vertical direction in FIG. 3). The slide frame 11 is inserted through a pair of guide rods 14a and 14b provided on the slide holding frame 12, and is held movably in the Y-axis direction (left and right direction in FIG. 3).

スライド枠１１のＹ軸方向およびＸ軸方向に隣接するようにしてスライド保持枠１２の表面には、磁石１５ａ，１５ｂがそれぞれ配置されている。また、磁石１５ａ，１５ｂの背面側にはコイル１６ａ，１６ｂが対向するようにして配置されている。コイル１６ａはスライド枠１１に設けた突出部（不図示）に固定され、コイル１６ｂは撮像素子保持枠８に設けた突出部（不図示）に固定されている。 Magnets 15a and 15b are arranged on the surface of the slide holding frame 12 so as to be adjacent to the Y axis direction and the X axis direction of the slide frame 11, respectively. Further, the coils 16a and 16b are arranged on the back side of the magnets 15a and 15b so as to face each other. The coil 16a is fixed to a protruding portion (not shown) provided on the slide frame 11, and the coil 16b is fixed to a protruding portion (not shown) provided on the image sensor holding frame 8.

各コイル１６ａ，１６ｂへの印加電流の制御により、各コイル１６ａ，１６ｂと磁石１５ａ，１５ｂとの間に発生する磁界による吸引反発によって、撮像素子保持枠８をＸ軸方向に、スライド枠１１をＹ軸方向にそれぞれ移動させることができる。 By controlling the current applied to each of the coils 16a and 16b, the image sensor holding frame 8 is moved in the X-axis direction and the slide frame 11 is moved by the attraction repulsion due to the magnetic field generated between the coils 16a and 16b and the magnets 15a and 15b. Each can be moved in the Y-axis direction.

なお、撮像素子保持枠８及びスライド枠１１には、該撮像素子保持枠８及びスライド枠１１の位置を検出するためのホール素子等の位置検出素子（不図示）が設置されている。 The image sensor holding frame 8 and the slide frame 11 are provided with position detection elements (not shown) such as Hall elements for detecting the positions of the image sensor holding frame 8 and the slide frame 11.

前記手ぶれ補正機構９は、撮影時に手ぶれが生じた場合においてカメラ本体２内のジャイロセンサ（不図示）等で検出したぶれ検出情報に基づいて、各コイル１６ａ，１６ｂへの印加電流を制御する。この制御により、各コイル１６ａ，１６ｂと各磁石１５ａ，１５ｂとの間に磁界による吸引反発を発生させる。この磁界による吸引反発によって、撮像素子保持枠８をＸ軸方向に、スライド枠１１をＹ軸方向にそれぞれ手ぶれを打ち消すように移動させる。これにより、手ぶれ補正を行うことができる。 The camera shake correction mechanism 9 controls applied currents to the coils 16a and 16b based on camera shake detection information detected by a gyro sensor (not shown) in the camera body 2 when camera shake occurs during shooting. By this control, attraction repulsion due to a magnetic field is generated between the coils 16a and 16b and the magnets 15a and 15b. Due to the attractive repulsion by the magnetic field, the image sensor holding frame 8 is moved in the X-axis direction and the slide frame 11 is moved in the Y-axis direction so as to cancel the camera shake. Thereby, camera shake correction can be performed.

また、撮像素子保持枠８の表面側（撮像素子７の表面側）には、図６に示すように、後述する固定レバー２２の先端に設けた固定ピン２３（図２〜図４参照）が離脱自在に係合する開口端が正方形状の係合穴１９が形成されている。係合穴１９は、係合穴１９内の正方形状の底部から光軸方向の物体側の正方形状の開口端に向けて広がるような傾斜面を有している。 Further, as shown in FIG. 6, a fixing pin 23 (see FIGS. 2 to 4) provided at the tip of a fixing lever 22 described later is provided on the surface side of the image sensor holding frame 8 (surface side of the image sensor 7). An engagement hole 19 having a square opening end that is detachably engaged is formed. The engagement hole 19 has an inclined surface that widens from the square bottom in the engagement hole 19 toward the square opening end on the object side in the optical axis direction.

なお、係合穴１９の形状としては、これ以外にも、例えば図７に示すように、係合穴１９内の円形状の底部から光軸方向の物体側の円形状に形成された開口端に向けて広がるような傾斜面でもよい。 In addition to this, as shown in FIG. 7, for example, the shape of the engagement hole 19 is an opening end formed in a circular shape on the object side in the optical axis direction from the circular bottom in the engagement hole 19. An inclined surface that spreads toward the surface may be used.

（保持機構１０の構成）
保持機構１０は、駆動モータ２０と、駆動モータ２０の回転運動を直線往復運動に変換する往復動機構２１と、往復動機構２１による往復動によって揺動する薄板状の固定レバー２２（前記強制押さえ板に相当）と、係合穴１９に離脱自在に係合し固定レバー２２の先端に設けられた固定ピン２３と、固定レバー２２の先端側（固定ピン２３側）をベース板６に付勢する板ばね部材２４（図３参照）とを備えている。 (Configuration of holding mechanism 10)
The holding mechanism 10 includes a drive motor 20, a reciprocating mechanism 21 that converts the rotational motion of the drive motor 20 into a linear reciprocating motion, and a thin plate-like fixed lever 22 that swings by the reciprocating motion of the reciprocating motion mechanism 21 (the forced presser). ), A fixing pin 23 that is detachably engaged with the engagement hole 19 and provided at the tip of the fixing lever 22, and a tip end side (fixing pin 23 side) of the fixing lever 22 is urged to the base plate 6. And a leaf spring member 24 (see FIG. 3).

ステッピングモータ等の駆動モータ２０は、レンズ鏡胴収納筒部５の外周面に一体的に形成したモータフランジ２５に保持されている。駆動モータ２０のモータ軸（出力軸）に固着された出力ギヤ２６には、往復動機構２１が連結されている。 A drive motor 20 such as a stepping motor is held by a motor flange 25 that is integrally formed on the outer peripheral surface of the lens barrel housing cylinder 5. A reciprocating mechanism 21 is connected to the output gear 26 fixed to the motor shaft (output shaft) of the drive motor 20.

往復動機構２１は、図２、図４、図５、図８に示すように、出力ギヤ２６と噛み合う回転伝達ギヤ２７を有するギヤ部２８と、ギヤ部２８の軸穴に光軸方向に移動自在に挿通された作動軸２９と、作動軸２９の外周面に設けた付勢ばね３０と、カムフォロア３１（図８参照）とを備えている。作動軸２９は、光軸方向（図２のＺ方向）に沿って配置されている。作動軸２９の一端側（駆動モータ２０側）は、モータフランジ２５に光軸方向に移動自在に保持され、作動軸２９の他端側（固定レバー２２側）は、レンズ鏡胴収納筒部５の外周面に一体的に形成した軸保持板３２に光軸方向に移動自在に保持されている。 2, 4, 5, and 8, the reciprocating mechanism 21 moves in the optical axis direction in a gear portion 28 having a rotation transmission gear 27 that meshes with the output gear 26, and in the shaft hole of the gear portion 28. An operating shaft 29 that is freely inserted, an urging spring 30 provided on the outer peripheral surface of the operating shaft 29, and a cam follower 31 (see FIG. 8) are provided. The operation shaft 29 is disposed along the optical axis direction (Z direction in FIG. 2). One end side (drive motor 20 side) of the operating shaft 29 is held by the motor flange 25 so as to be movable in the optical axis direction, and the other end side (fixed lever 22 side) of the operating shaft 29 is held in the lens barrel housing cylinder portion 5. Is held by a shaft holding plate 32 integrally formed on the outer peripheral surface thereof so as to be movable in the optical axis direction.

図９（ａ）、（ｂ）に示すように、回転伝達ギヤ２７の内側にはカム面３３が形成されており、モータフランジ２５に固着されたカムフォロア３１がこのカム面３３に当接している。回転伝達ギヤ２７は、作動軸２９の軸保持板３２側に設けたギヤ受部３４で光軸方向の作動軸２９に対する相対移動が規制され、かつ軸保持板３２とギヤ受部３４との間に設けた前記付勢ばね３０によりモータフランジ２５側に付勢されている。これにより、回転伝達ギヤ２７内のカム面３３にカムフォロア３１が常に当接している。 As shown in FIGS. 9A and 9B, a cam surface 33 is formed inside the rotation transmission gear 27, and a cam follower 31 fixed to the motor flange 25 is in contact with the cam surface 33. . The rotation transmission gear 27 is restricted in relative movement with respect to the operation shaft 29 in the optical axis direction by a gear receiving portion 34 provided on the shaft holding plate 32 side of the operation shaft 29, and between the shaft holding plate 32 and the gear receiving portion 34. It is urged toward the motor flange 25 by the urging spring 30 provided on the motor. Thereby, the cam follower 31 is always in contact with the cam surface 33 in the rotation transmission gear 27.

固定レバー２２は、上方（撮影レンズ系３側）から見て直線的に形成されており、レンズ鏡胴収納筒部５の基端側に形成した開口部５ａを通してベース板６及びスライド保持枠１２の表面に沿って配置されている。固定レバー２２の中間部付近は、軸受部材３５に軸支された揺動軸３６（図３参照）により揺動自在に保持されている。軸受部材３５はベース板６上に設けられている。なお、図２、図４では、揺動軸３６（軸受部材３５）と板ばね部材２４は不図示である。 The fixed lever 22 is formed linearly when viewed from above (the photographing lens system 3 side), and the base plate 6 and the slide holding frame 12 are passed through an opening 5 a formed on the base end side of the lens barrel housing cylinder portion 5. Are arranged along the surface. The vicinity of the intermediate portion of the fixed lever 22 is swingably held by a swing shaft 36 (see FIG. 3) that is pivotally supported by the bearing member 35. The bearing member 35 is provided on the base plate 6. 2 and 4, the swing shaft 36 (bearing member 35) and the leaf spring member 24 are not shown.

固定レバー２２は、段部２２ａを介してその一端側が撮像素子保持枠８の係合穴１９付近まで延びており、固定レバー２２の一端部には前記係合穴１９に離脱自在に係合する固定ピン２３が固着されている。固定ピン２３の一端側は略球面状に形成されている。また、固定レバー２２の他端側は前記作動軸２９の先端部に当接している。 One end of the fixing lever 22 extends to the vicinity of the engagement hole 19 of the image sensor holding frame 8 via the stepped portion 22a, and the one end of the fixing lever 22 is detachably engaged with the engagement hole 19. The fixing pin 23 is fixed. One end side of the fixing pin 23 is formed in a substantially spherical shape. Further, the other end side of the fixing lever 22 is in contact with the distal end portion of the operating shaft 29.

固定レバー２２の揺動軸３６よりも少し先端側の上面は、板ばね部材２４によりベース板６の背面側（レンズ鏡胴３と反対側）に付勢されている。板ばね部材２４の他端側はベース板６上に固定されている。また、固定レバー２２の段部２２ａよりも少し先端側にはガイド孔２２ｂが形成されており、ベース板６上にはこのガイド孔２２ｂに離脱自在に嵌合するガイドピン３７が設けられている。 The upper surface of the fixed lever 22 that is slightly distal to the pivot shaft 36 is urged toward the back side of the base plate 6 (the side opposite to the lens barrel 3) by the leaf spring member 24. The other end side of the leaf spring member 24 is fixed on the base plate 6. Further, a guide hole 22b is formed slightly on the front end side of the step portion 22a of the fixed lever 22, and a guide pin 37 is provided on the base plate 6 so as to be detachably fitted in the guide hole 22b. .

次に、撮像素子保持枠８の移動を規制して保持する保持機構１０の動作について説明する。 Next, the operation of the holding mechanism 10 that restricts and holds the movement of the image sensor holding frame 8 will be described.

デジタルカメラ１（図１参照）の電源スイッチ（不図示）がＯＦＦ（手ぶれ補正機構９を作動させる手ぶれ補正スイッチ（不図示）もＯＦＦ）の場合には、図２に示したように、レンズ鏡胴４がレンズ鏡胴収納筒部５内の沈胴位置にある。このときには、駆動モータ２０の時計方向の回転駆動により出力ギヤ２６と噛み合っている回転伝達ギヤ２７が反時計方向に回転し、カムフォロア３１の先端部がカム面３３の深部（図９（ｂ））に摺接状態にあるように制御されている。 When the power switch (not shown) of the digital camera 1 (see FIG. 1) is OFF (the camera shake correction switch (not shown) for operating the camera shake correction mechanism 9 is also OFF), as shown in FIG. The barrel 4 is in the retracted position in the lens barrel storage cylinder portion 5. At this time, the rotation transmission gear 27 meshing with the output gear 26 is rotated counterclockwise by the clockwise driving of the drive motor 20, and the tip of the cam follower 31 is the deep portion of the cam surface 33 (FIG. 9B). It is controlled to be in a sliding contact state.

これにより、付勢ばね３０による付勢力によって回転伝達ギヤ２７（ギヤ部２８）と一体に作動軸２９がモータフランジ２５側に所定距離だけ移動状態にあり、作動軸２９の先端は固定レバー２２の他端側の上面を押圧していない。 Thus, the operating shaft 29 is moved to the motor flange 25 side by a predetermined distance integrally with the rotation transmission gear 27 (gear portion 28) by the biasing force of the biasing spring 30. The upper surface on the other end side is not pressed.

よって、図２に示したように、固定レバー２２の一端側は、板ばね部材２４による付勢力によりベース板６側（図２の下側）に付勢されることにより、固定ピン２３が撮像素子保持枠８に形成した係合穴１９に係合している。これにより、撮像素子保持枠８の移動が規制されて、撮像素子７の中心が光軸上に位置する状態で撮像素子保持枠８が機械的に保持される。 Therefore, as shown in FIG. 2, one end side of the fixing lever 22 is urged toward the base plate 6 side (lower side in FIG. 2) by the urging force of the leaf spring member 24, so that the fixing pin 23 is imaged. It engages with an engagement hole 19 formed in the element holding frame 8. Thereby, the movement of the image sensor holding frame 8 is restricted, and the image sensor holding frame 8 is mechanically held in a state where the center of the image sensor 7 is located on the optical axis.

そして、デジタルカメラ１（図１参照）の電源スイッチ（不図示）をＯＮした場合には、図１０に示すように、レンズ鏡胴４がレンズ鏡胴収納筒部５内の沈胴位置（図２に示した位置）から前方側（図１０の左側）の撮像待機位置に駆動機構（不図示）により移動し、撮影可能状態となる。これにより、レンズ鏡胴４の底面側とレンズ鏡胴収納筒部５内の撮像素子保持枠８の光軸方向の物体側（撮像素子７側）との間に所定の空間が得られる。 When the power switch (not shown) of the digital camera 1 (see FIG. 1) is turned on, as shown in FIG. 10, the lens barrel 4 is in the retracted position (FIG. 2) in the lens barrel storage cylinder portion 5. To the imaging standby position on the front side (left side in FIG. 10) by the drive mechanism (not shown), and the photographing is ready. Thereby, a predetermined space is obtained between the bottom surface side of the lens barrel 4 and the object side (image sensor 7 side) in the optical axis direction of the image sensor holding frame 8 in the lens barrel housing cylinder 5.

そして、手ぶれ補正スイッチ（不図示）をＯＮにすると、駆動モータ２０の反時計方向の回転駆動により出力ギヤ２６と噛み合っている回転伝達ギヤ２７が時計方向に回転し、カムフォロア３１の先端部がカム面３３の浅部（図９（ｂ））に摺接状態にあるように制御される。これにより、付勢ばね３０による付勢力に抗して回転伝達ギヤ２７（ギヤ部２８）と一体に作動軸２９が軸保持板３２側に所定距離だけ移動して、作動軸２９の先端が固定レバー２２の他端側の上面を押圧する。 When a camera shake correction switch (not shown) is turned on, the rotation transmission gear 27 meshed with the output gear 26 is rotated clockwise by the counterclockwise rotation drive of the drive motor 20, and the tip of the cam follower 31 is camped. Control is performed so that the surface 33 is in sliding contact with the shallow portion (FIG. 9B). As a result, the operating shaft 29 moves to the shaft holding plate 32 side by a predetermined distance integrally with the rotation transmission gear 27 (gear portion 28) against the urging force of the urging spring 30, and the tip of the operating shaft 29 is fixed. The upper surface on the other end side of the lever 22 is pressed.

よって、固定レバー２２の一端側が揺動軸３６（図３参照）を揺動支点にして、板ばね部材２４による付勢力に抗してレンズ鏡胴４側（図１０の左側）に揺動し、固定ピン２３が撮像素子保持枠８に形成した係合穴１９から離脱することにより、撮像素子保持枠８の機械的な固定が解除される。これにより、手ぶれ補正機構９が作動可能状態となる。 Therefore, one end of the fixed lever 22 swings to the lens barrel 4 side (left side in FIG. 10) against the urging force of the leaf spring member 24 with the swing shaft 36 (see FIG. 3) as a swing fulcrum. When the fixing pin 23 is disengaged from the engagement hole 19 formed in the image sensor holding frame 8, the mechanical fixing of the image sensor holding frame 8 is released. As a result, the camera shake correction mechanism 9 becomes operable.

なお、デジタルカメラ１の電源スイッチ（不図示）がＯＮ状態でも手ぶれ補正スイッチ（不図示）がＯＦＦの場合には、図２に示した電源スイッチ（不図示）がＯＦＦの場合と同様に、固定ピン２３が撮像素子保持枠８に形成した係合穴１９に係合状態にあり、撮像素子保持枠８が機械的に固定されている。 When the camera shake correction switch (not shown) is OFF even when the power switch (not shown) of the digital camera 1 is in the ON state, it is fixed as in the case where the power switch (not shown) shown in FIG. 2 is OFF. The pin 23 is engaged with an engagement hole 19 formed in the image sensor holding frame 8, and the image sensor holding frame 8 is mechanically fixed.

このように、本実施形態に係るデジタルカメラ１（撮像装置）によれば、レンズ鏡胴４が被写体側に繰出されて、レンズ鏡胴４と撮像素子保持枠８との間に所定の空間が形成されるときに、往復動機構２１の作動により固定レバー２２の一端側を略前記光軸方向に揺動させる構造により、撮像素子７よりも光軸方向の物体と反対側に固定レバー２２が移動するためのスペースが不要となる。これにより、レンズ鏡胴４の光軸方向の厚さを薄くすることができる。 Thus, according to the digital camera 1 (imaging device) according to the present embodiment, the lens barrel 4 is extended to the subject side, and a predetermined space is provided between the lens barrel 4 and the image sensor holding frame 8. When formed, the fixed lever 22 is positioned on the side opposite to the object in the optical axis direction relative to the image sensor 7 by the structure in which the one end side of the fixed lever 22 is swung substantially in the optical axis direction by the operation of the reciprocating mechanism 21. Space for moving is unnecessary. Thereby, the thickness of the lens barrel 4 in the optical axis direction can be reduced.

また、本実施形態に係るデジタルカメラ１（撮像装置）によれば、レンズ鏡胴４が被写体側に繰出されて、レンズ鏡胴４と撮像素子保持枠８との間に所定の空間が形成されるときに、往復動機構２１の作動により固定レバー２２の一端側を略前記光軸方向に揺動させる構造により、小型化及び薄型化等によって高密度実装が施されたデジタルカメラにおいても、揺動自在な固定レバー２２を周囲の部品や配線等と干渉することなく設置できる。 Further, according to the digital camera 1 (imaging device) according to the present embodiment, the lens barrel 4 is extended to the subject side, and a predetermined space is formed between the lens barrel 4 and the image sensor holding frame 8. Even when a digital camera is mounted with high density due to downsizing, thinning, etc., the structure in which one end side of the fixed lever 22 is swung substantially in the optical axis direction by the operation of the reciprocating mechanism 21. The movable fixing lever 22 can be installed without interfering with surrounding parts and wiring.

更に、本実施形態では、デジタルカメラ１の電源スイッチ（不図示）がＯＮで手ぶれ補正スイッチ（不図示）がＯＦＦの場合には、固定レバー２２の一端側に設けた固定ピン２３が撮像素子保持枠８に形成した係合穴１９に係合して、撮像素子保持枠８が機械的に固定される。これにより、手ぶれ補正機構９の各コイル１６ａ，１６ｂ等への通電をＯＦＦにすることができるので、消費電力の低減を図ることができる。 Furthermore, in this embodiment, when the power switch (not shown) of the digital camera 1 is ON and the camera shake correction switch (not shown) is OFF, the fixing pin 23 provided on one end side of the fixing lever 22 holds the image sensor. The image sensor holding frame 8 is mechanically fixed by engaging with an engagement hole 19 formed in the frame 8. As a result, the energization of the coils 16a, 16b and the like of the camera shake correction mechanism 9 can be turned off, so that power consumption can be reduced.

また、前記実施形態では、固定レバー２２の一端側を板ばね部材２４によってベース板６側にのみ付勢する構成であったが、図１１、図１２に示すように、板ばね部材２４に第１板ばね部２４ａと第２板ばね部２４ｂとを形成してもよい。 In the above embodiment, the one end side of the fixing lever 22 is urged only to the base plate 6 side by the leaf spring member 24. However, as shown in FIGS. You may form the 1 leaf | plate spring part 24a and the 2nd leaf | plate spring part 24b.

板ばね部材２４の第１板ばね部２４ａは、固定レバー２２の揺動軸３６よりも少し先端側の上面に当接して固定レバー２２の一端側をベース板６側に付勢する。 The first leaf spring portion 24 a of the leaf spring member 24 abuts the upper surface of the fixed lever 22 slightly toward the tip end side than the swinging shaft 36 and biases one end side of the fixed lever 22 toward the base plate 6.

板ばね部材２４の第２板ばね部２４ｂは、固定レバー２２の段部２２ａの側面に当接して固定レバー２２を光軸に対して垂直方向に付勢する。これにより、ガイド孔２２ｂとガイドピン３７との間に所定以上の隙間がある場合でも、ガイドピン３７がガイド孔２２ｂの一方側（第２板ばね部２４ｂと反対側）に付勢される。これによって、固定レバー２２の光軸に対して垂直方向へのガタツキを防止することができる。 The second leaf spring portion 24b of the leaf spring member 24 abuts on the side surface of the step portion 22a of the fixed lever 22 and urges the fixed lever 22 in a direction perpendicular to the optical axis. Accordingly, even when there is a predetermined gap or more between the guide hole 22b and the guide pin 37, the guide pin 37 is biased to one side of the guide hole 22b (the side opposite to the second leaf spring portion 24b). As a result, rattling in the direction perpendicular to the optical axis of the fixed lever 22 can be prevented.

〈実施形態２〉
図１３は、本発明の実施形態２に係るデジタルカメラのベース板上のレンズ鏡胴収納筒部側を示す正面図、図１４は、図１３のＢ−Ｂ線断面図である。なお、前記実施形態１と同一機能を有する部材には同一符号（一部の部材には異なる符号）を付して説明する。 <Embodiment 2>
FIG. 13 is a front view showing the lens barrel housing tube portion side on the base plate of the digital camera according to Embodiment 2 of the present invention, and FIG. 14 is a cross-sectional view taken along the line BB of FIG. Note that members having the same functions as those of the first embodiment will be described with the same reference numerals (different reference numerals for some members).

本実施形態においても、図１３、図１５に示すように、レンズ鏡胴収納筒部５内の中央部に位置するベース板６の表面上には、ＣＣＤ等の撮像素子７を保持した撮像素子保持枠８と、撮像素子保持枠８（撮像素子７）を光軸方向に垂直な面内で移動させて手ぶれを補正する手ぶれ補正機構９ａと、撮像素子保持枠８の光軸と垂直方向に対する移動を機械的に規制して保持する保持機構１０ａが設置されている。 Also in the present embodiment, as shown in FIGS. 13 and 15, an image pickup device holding an image pickup device 7 such as a CCD on the surface of the base plate 6 located at the center in the lens barrel housing tube portion 5. A holding frame 8, a camera shake correction mechanism 9 a that corrects camera shake by moving the image sensor holding frame 8 (image sensor 7) in a plane perpendicular to the optical axis direction, and a direction perpendicular to the optical axis of the image sensor holding frame 8. A holding mechanism 10a that mechanically restricts and holds the movement is installed.

（手ぶれ補正機構９ａの構成）
手ぶれ補正機構９ａは、撮像素子保持枠８を移動自在に保持したスライド枠１１を備えており、スライド枠１１は、レンズ鏡胴収納筒部５内のベース板６上に設けたスライド保持枠１２の内側に移動自在に保持されている。撮像素子保持枠８は、スライド枠１１に設けたガイド棒１３に挿通されてＸ軸方向（図１３の上下方向）に移動自在に保持されている。なお、撮像素子保持枠８のガイド棒１３と反対側もガイド棒（不図示）によって移動自在に保持されている。 (Configuration of the image stabilization mechanism 9a)
The camera shake correction mechanism 9 a includes a slide frame 11 that movably holds the image sensor holding frame 8. The slide frame 11 is provided on the base plate 6 in the lens barrel storage cylinder portion 5. Is held movably inside. The image sensor holding frame 8 is inserted through a guide bar 13 provided on the slide frame 11 and is held movably in the X-axis direction (vertical direction in FIG. 13). Note that the opposite side of the image sensor holding frame 8 from the guide rod 13 is also movably held by a guide rod (not shown).

スライド枠１１は、スライド保持枠１２に設けたガイド棒１４に挿通されてＹ軸方向（図１３の左右方向）に移動自在に保持されている。なお、スライド枠１１のガイド棒１４と反対側もガイド棒（不図示）によって移動自在に保持されている。 The slide frame 11 is inserted through a guide rod 14 provided on the slide holding frame 12 and is held so as to be movable in the Y-axis direction (left-right direction in FIG. 13). Note that the side of the slide frame 11 opposite to the guide bar 14 is also movably held by a guide bar (not shown).

スライド枠１１のＹ軸方向およびＸ軸方向に隣接するようにしてスライド保持枠１２の表面には、ヨーク１５ａ，１５ｂが一体に形成された磁石がそれぞれ配置されている。また、ヨーク１５ａ，１５ｂが一体に形成された各磁石の背面側にはコイル１６ａ，１６ｂが対向するようにして配置されている。コイル１６ａはスライド枠１１に設けた突出部（不図示）に固定され、コイル１６ｂは撮像素子保持枠８に設けた突出部（不図示）に固定されている。 Magnets on which the yokes 15a and 15b are integrally formed are arranged on the surface of the slide holding frame 12 so as to be adjacent to each other in the Y axis direction and the X axis direction of the slide frame 11. Further, the coils 16a and 16b are arranged so as to face each other on the back side of each magnet in which the yokes 15a and 15b are integrally formed. The coil 16a is fixed to a protruding portion (not shown) provided on the slide frame 11, and the coil 16b is fixed to a protruding portion (not shown) provided on the image sensor holding frame 8.

各コイル１６ａ，１６ｂへの印加電流の制御により、各コイル１６ａ，１６ｂとヨーク１５ａ，１５ｂが一体に形成された各磁石との間に発生する磁界による吸引反発によって、撮像素子保持枠８をＸ軸方向に、スライド枠１１をＹ軸方向にそれぞれ移動させることができる。 By controlling the current applied to each of the coils 16a and 16b, the image sensor holding frame 8 is moved to X by attraction and repulsion by a magnetic field generated between the coils 16a and 16b and the magnets integrally formed with the yokes 15a and 15b. The slide frame 11 can be moved in the Y-axis direction in the axial direction.

前記手ぶれ補正機構９ａは、撮影時に手ぶれが生じた場合においてジャイロセンサ（不図示）等で検出したぶれ検出情報に基づいて、各コイル１６ａ，１６ｂへの印加電流を制御する。この制御により、各コイル１６ａ，１６ｂとヨーク１５ａ，１５ｂが一体に形成された各磁石との間に磁界による吸引反発を発生させる。この磁界による吸引反発によって、撮像素子保持枠８をＸ軸方向に、スライド枠１１をＹ軸方向にそれぞれ手ぶれを打ち消すように移動させる。これにより、手ぶれ補正を行うことができる。 The camera shake correction mechanism 9a controls the current applied to the coils 16a and 16b based on camera shake detection information detected by a gyro sensor (not shown) or the like when camera shake occurs during shooting. By this control, attraction repulsion due to a magnetic field is generated between the coils 16a and 16b and the magnets integrally formed with the yokes 15a and 15b. Due to the attractive repulsion by the magnetic field, the image sensor holding frame 8 is moved in the X-axis direction and the slide frame 11 is moved in the Y-axis direction so as to cancel the camera shake. Thereby, camera shake correction can be performed.

また、撮像素子保持枠８の表面側（撮像素子７の表面側）には、後述する固定レバー２２の先端に設けた固定ピン２３が離脱自在に係合する係合穴１９（図１４参照）が形成されている。係合穴１９は、図６に示したように、係合穴１９内の正方形状の底部から光軸方向の物体側の正方形状の開口端に向けて広がるような傾斜面を有している。 Further, on the surface side of the image sensor holding frame 8 (the surface side of the image sensor 7), an engagement hole 19 (see FIG. 14) in which a fixing pin 23 provided at the tip of a fixing lever 22 described later is detachably engaged. Is formed. As shown in FIG. 6, the engagement hole 19 has an inclined surface that widens from the square bottom in the engagement hole 19 toward the square opening end on the object side in the optical axis direction. .

（保持機構１０ａの構成）
保持機構１０ａは、図１５に示すように、駆動モータ２０と、駆動モータ２０の回転運動を直線往復運動に変換する往復動機構２１と、往復動機構２１による往復動によって揺動する薄板状の固定レバー２２と、係合穴１９に離脱自在に係合する固定レバー２２の先端に設けた固定ピン２３とを備えている。 (Configuration of holding mechanism 10a)
As shown in FIG. 15, the holding mechanism 10 a includes a driving motor 20, a reciprocating mechanism 21 that converts the rotational motion of the driving motor 20 into a linear reciprocating motion, and a thin plate-like shape that swings by the reciprocating motion of the reciprocating mechanism 21. A fixing lever 22 and a fixing pin 23 provided at the distal end of the fixing lever 22 detachably engaged with the engagement hole 19 are provided.

ステッピングモータ等の駆動モータ２０は、図１６、図１７に示すように、モータ保持板４０に保持されている。モータ保持板４０は、レンズ鏡胴収納筒部５の外周面に一体に形成したフランジ４１に固着されている。駆動モータ２０のモータ軸（出力軸）に固着された出力ギヤ（不図示）には、往復動機構２１が連結されている。 The drive motor 20 such as a stepping motor is held by a motor holding plate 40 as shown in FIGS. The motor holding plate 40 is fixed to a flange 41 that is integrally formed on the outer peripheral surface of the lens barrel housing tube portion 5. A reciprocating mechanism 21 is connected to an output gear (not shown) fixed to the motor shaft (output shaft) of the drive motor 20.

往復動機構２１は、図１５、図１７に示すように、駆動モータ２０のモータ軸（出力軸）に固着された出力ギヤ４２と噛み合う回転伝達ギヤ４３と、回転伝達ギヤ４３と同軸上に一体的に形成された伝達ギヤ４４と、カム面４５ａを有し伝達ギヤ４４と噛み合うカムギヤ４５と、カムギヤ４５の軸穴に挿通された作動軸４６と、カム面４５ａに当接するカムフォロア４７と、作動軸４６の一端側（図１７の上側）の周面に設けた第１コイルばね４８と、作動軸４６の他端側（図１７の下側）の周面に設けた第２コイルばね４９とを備えている。作動軸４６は、光軸方向（図１７の上下方向）に沿って配置されている。 As shown in FIGS. 15 and 17, the reciprocating mechanism 21 is integrated with a rotation transmission gear 43 that meshes with an output gear 42 fixed to a motor shaft (output shaft) of the drive motor 20, and the rotation transmission gear 43. A transmission gear 44 formed in common, a cam gear 45 having a cam surface 45a and meshing with the transmission gear 44, an operating shaft 46 inserted through the shaft hole of the cam gear 45, a cam follower 47 contacting the cam surface 45a, and an operation A first coil spring 48 provided on the peripheral surface on one end side (upper side in FIG. 17) of the shaft 46; a second coil spring 49 provided on the peripheral surface on the other end side (lower side in FIG. 17) of the operating shaft 46; It has. The operation shaft 46 is disposed along the optical axis direction (vertical direction in FIG. 17).

作動軸４６の一端側（図１７の上側）はフランジ４１に光軸方向に移動自在に保持され、作動軸４６の中間部付近はモータ保持板４０に光軸方向に移動自在に保持されている。カムフォロア４７はモータ保持板４０に固着されている。 One end side (upper side in FIG. 17) of the operating shaft 46 is held by the flange 41 so as to be movable in the optical axis direction, and the vicinity of the intermediate portion of the operating shaft 46 is held by the motor holding plate 40 so as to be movable in the optical axis direction. . The cam follower 47 is fixed to the motor holding plate 40.

カムギヤ４５は、作動軸４６のモータ保持板４０側に設けたギヤ受部４６ａで光軸方向の作動軸４６に対する相対移動が規制され、かつ作動軸４６に固着したばね止め部材５０で一端側がばね止めされた第１付勢ばね４８によりモータ保持板４０側に付勢されている。これにより、カムギヤ４５のカム面４５ａはカムフォロア４７に常に当接している。 The cam gear 45 is restricted in relative movement with respect to the operation shaft 46 in the optical axis direction by a gear receiving portion 46 a provided on the motor holding plate 40 side of the operation shaft 46, and has a spring stop member 50 fixed to the operation shaft 46 at one end side as a spring. The first urging spring 48 that is stopped is urged toward the motor holding plate 40. As a result, the cam surface 45 a of the cam gear 45 is always in contact with the cam follower 47.

作動軸４６の他端側（図１７の下側）の周面に形成されたねじ溝４６ｂにはレバー受部材５１のねじ部が螺合しており、レバー受部材５１は、モータ保持板４０で一端側がばね止めされた第２コイルばね４９により作動軸４６の他端側（図１７の下側）に常に付勢されている。なお、第１コイルばね４８の付勢力は、第２コイルばね４９の付勢力よりも大きくなるように設定されている。 A screw groove of the lever receiving member 51 is screwed into a thread groove 46b formed on the peripheral surface of the other end side (lower side in FIG. 17) of the operating shaft 46. The lever receiving member 51 is connected to the motor holding plate 40. Thus, the second coil spring 49, whose one end is spring-loaded, is always urged toward the other end (lower side in FIG. 17) of the operating shaft 46. The urging force of the first coil spring 48 is set to be larger than the urging force of the second coil spring 49.

固定レバー２２は、図１３、図１５に示すように、その一端側がスライド保持枠１２の表面に沿って配置され、スライド枠１１の角部に沿って直角に曲げられて、撮像素子保持枠８に形成した係合穴１９（図１４参照）付近まで延びている。固定レバー２２の先端部には前記係合穴１９に離脱自在に係合する固定ピン２３が固着されている。また、固定レバー２２の他端側の円弧状に開口した連結部２２ｃは、作動軸４６に螺合されたレバー受部材５１に嵌合されている。 As shown in FIGS. 13 and 15, one end side of the fixing lever 22 is disposed along the surface of the slide holding frame 12, and is bent at a right angle along the corner of the slide frame 11, so that the image pickup device holding frame 8. It extends to the vicinity of the engagement hole 19 (see FIG. 14) formed in the. A fixing pin 23 that is detachably engaged with the engagement hole 19 is fixed to the distal end portion of the fixing lever 22. Further, the connecting portion 22 c that opens in an arc shape on the other end side of the fixed lever 22 is fitted to a lever receiving member 51 that is screwed to the operating shaft 46.

固定レバー２２の中間部付近（スライド保持枠１２の側面に位置する固定レバー２２の段部２２ａの他端側付近）は、軸受部材３５に軸支された揺動軸３６により揺動自在に保持されている。また、固定レバー２２の直角に曲げられている角部にはガイド孔２２ｂが形成されており、スライド保持枠１２上にはこのガイド孔２２ｂに離脱自在に嵌合するガイドピン３７が設けられている。 Near the intermediate portion of the fixed lever 22 (near the other end side of the step portion 22a of the fixed lever 22 located on the side surface of the slide holding frame 12) is swingably held by the swing shaft 36 pivotally supported by the bearing member 35. Has been. A guide hole 22b is formed in a corner portion of the fixing lever 22 bent at a right angle, and a guide pin 37 is provided on the slide holding frame 12 so as to be detachably fitted in the guide hole 22b. Yes.

次に、撮像素子保持枠８の移動を規制して保持する保持機構１０ａの動作について説明する。 Next, the operation of the holding mechanism 10a that controls and holds the movement of the image sensor holding frame 8 will be described.

デジタルカメラ１（図１参照）の電源スイッチ（不図示）がＯＦＦ（手ぶれ補正機構９ａを作動させる手ぶれ補正スイッチ（不図示）もＯＦＦ）の場合には、図１４に示したように、レンズ鏡胴４がレンズ鏡胴収納筒部５内の沈胴位置にある。このときには、駆動モータ２０の時計方向の回転駆動により出力ギヤ４２と噛み合っている回転伝達ギヤ４３および伝達ギヤ４４が反時計方向に回転して、カムギヤ４５が時計方向に回転し、カムフォロア４７の先端部がカム面４５ａの深部（図９（ｂ））に摺接状態にあるように制御されている。 When the power switch (not shown) of the digital camera 1 (see FIG. 1) is OFF (the camera shake correction switch (not shown) for operating the camera shake correction mechanism 9a is also OFF), as shown in FIG. The barrel 4 is in the retracted position in the lens barrel storage cylinder portion 5. At this time, the rotation transmission gear 43 and the transmission gear 44 meshed with the output gear 42 are rotated counterclockwise by the clockwise rotation drive of the drive motor 20, the cam gear 45 is rotated clockwise, and the tip of the cam follower 47 is rotated. It is controlled so that the portion is in sliding contact with the deep portion (FIG. 9B) of the cam surface 45a.

これにより、第１付勢ばね４８による付勢力によってカムギヤ４５と一体に作動軸４６がフランジ４１側に所定距離だけ移動状態にあり、作動軸４６の一端側に螺合されたレバー受部材５１をモータ保持板４０側に移動させている。 Accordingly, the lever shaft 51 is engaged with the cam gear 45 by the urging force of the first urging spring 48 so that the operating shaft 46 is moved to the flange 41 side by a predetermined distance, and the lever receiving member 51 screwed to one end side of the operating shaft 46 is moved. It is moved to the motor holding plate 40 side.

よって、図１４に示したように、固定レバー２２の一端側はベース板６側（図１４の右側）に付勢されることにより、固定ピン２３が撮像素子保持枠８に形成した係合穴１９に係合している。これにより、撮像素子保持枠８の移動が規制されて、撮像素子７の中心が光軸上に位置する状態で撮像素子保持枠８が機械的に保持される。 Therefore, as shown in FIG. 14, one end side of the fixing lever 22 is biased toward the base plate 6 side (right side in FIG. 14), whereby the fixing pin 23 is formed in the engagement hole formed in the image sensor holding frame 8. 19 is engaged. Thereby, the movement of the image sensor holding frame 8 is restricted, and the image sensor holding frame 8 is mechanically held in a state where the center of the image sensor 7 is located on the optical axis.

そして、デジタルカメラ１（図１参照）の電源スイッチ（不図示）をＯＮした場合には、図１８に示すように、レンズ鏡胴４がレンズ鏡胴収納筒部５内の沈胴位置（図１４に示した位置）から前方側（図１８の左側）の撮像待機位置に駆動機構（不図示）により移動し、撮影可能状態となる。これにより、レンズ鏡胴４の底面側とレンズ鏡胴収納筒部５内の撮像素子保持枠８の光軸方向の物体側（撮像素子７側）との間に所定の空間が得られる。 When the power switch (not shown) of the digital camera 1 (see FIG. 1) is turned on, as shown in FIG. 18, the lens barrel 4 is in the retracted position (FIG. 14) in the lens barrel storage cylinder portion 5. To the imaging standby position on the front side (left side in FIG. 18) by the drive mechanism (not shown), and the camera is ready to shoot. Thereby, a predetermined space is obtained between the bottom surface side of the lens barrel 4 and the object side (image sensor 7 side) in the optical axis direction of the image sensor holding frame 8 in the lens barrel housing cylinder 5.

そして、手ぶれ補正スイッチ（不図示）をＯＮにすると、駆動モータ２０の反時計方向の回転駆動により出力ギヤ２６と噛み合っている回転伝達ギヤ４３および伝達ギヤ４４が時計方向に回転して、カムギヤ４５が反時計方向に回転し、カムフォロア４７の先端部がカム面４５ａの浅部（図９（ｂ））に摺接状態にあるように制御されている。 When the camera shake correction switch (not shown) is turned ON, the rotation transmission gear 43 and the transmission gear 44 meshing with the output gear 26 are rotated clockwise by the counterclockwise rotation drive of the drive motor 20, and the cam gear 45 is rotated. Is rotated counterclockwise, and the tip of the cam follower 47 is controlled so as to be in sliding contact with the shallow portion (FIG. 9B) of the cam surface 45a.

これにより、第１コイルばね４８による付勢力によってカムギヤ４５と一体に作動軸４６がモータ保持板４０側に所定距離だけ移動状態にあり、作動軸４６の一端側に螺合されたレバー受部材５１をモータ保持板４０と反対側に移動する。 Thus, the lever shaft 51 is engaged with the cam gear 45 by the biasing force of the first coil spring 48 so that the operating shaft 46 is moved to the motor holding plate 40 side by a predetermined distance and is screwed to one end side of the operating shaft 46. Is moved to the opposite side of the motor holding plate 40.

よって、固定レバー２２の一端側が揺動軸３６を揺動支点にしてレンズ鏡胴４側（図１８の左側）に揺動し、固定ピン２３が撮像素子保持枠８に形成した係合穴１９から離脱することにより、撮像素子保持枠８の機械的な固定が解除される。これにより、手ぶれ補正機構９が作動可能状態となる。 Therefore, one end side of the fixed lever 22 swings to the lens barrel 4 side (left side in FIG. 18) with the swing shaft 36 as a swing fulcrum, and the fixing pin 23 is an engagement hole 19 formed in the image sensor holding frame 8. The mechanical fixing of the image sensor holding frame 8 is released by detaching from the frame. As a result, the camera shake correction mechanism 9 becomes operable.

なお、デジタルカメラ１の電源スイッチ（不図示）がＯＮ状態でも手ぶれ補正スイッチ（不図示）がＯＦＦの場合には、電源スイッチ（不図示）がＯＦＦの場合（図１４）と同様に、固定ピン２３が撮像素子保持枠８に形成した係合穴１９に係合状態にあり、撮像素子保持枠８が機械的に固定されている。 When the camera shake correction switch (not shown) is OFF even when the power switch (not shown) of the digital camera 1 is ON, the fixed pin is the same as when the power switch (not shown) is OFF (FIG. 14). 23 is engaged with an engagement hole 19 formed in the image sensor holding frame 8, and the image sensor holding frame 8 is mechanically fixed.

このように、本実施形態においても、レンズ鏡胴４が被写体側に繰出されて、レンズ鏡胴４と撮像素子保持枠８との間に所定の空間が形成されるときに、往復動機構２１の作動により固定レバー２２の一端側を略前記光軸方向に揺動させる構造により、撮像素子７よりも光軸方向の物体と反対側に固定レバー２２（前記強制押さえ板に相当）が移動するためのスペースが不要となる。これにより、レンズ鏡胴４の光軸方向の厚さを薄くすることができる。 As described above, also in this embodiment, when the lens barrel 4 is extended to the subject side and a predetermined space is formed between the lens barrel 4 and the image sensor holding frame 8, the reciprocating mechanism 21. Due to the structure in which one end side of the fixed lever 22 is swung substantially in the optical axis direction by the operation of, the fixed lever 22 (corresponding to the forced pressing plate) moves to the side opposite to the object in the optical axis direction than the image sensor 7. Space is not required. Thereby, the thickness of the lens barrel 4 in the optical axis direction can be reduced.

また、本実施形態においても、レンズ鏡胴４が被写体側に繰出されて、レンズ鏡胴４と撮像素子保持枠８との間に所定の空間が形成されるときに、往復動機構２１の作動により固定レバー２２の一端側を略前記光軸方向に揺動させる構造により、小型化及び薄型化等によって高密度実装が施されたデジタルカメラにおいても、揺動自在な固定レバー２２を周囲の部品や配線等と干渉することなく設置できる。 Also in this embodiment, when the lens barrel 4 is extended toward the subject side and a predetermined space is formed between the lens barrel 4 and the image sensor holding frame 8, the reciprocating mechanism 21 operates. With the structure in which one end side of the fixing lever 22 is swung substantially in the optical axis direction, even in a digital camera that is mounted with high density by downsizing, thinning, etc., the swiveling fixing lever 22 is connected to surrounding components. And can be installed without interfering with wiring.

更に、本実施形態においても、デジタルカメラ１の電源スイッチ（不図示）がＯＮで手ぶれ補正スイッチ（不図示）がＯＦＦの場合には、固定レバー２２の一端側に設けた固定ピン２３が撮像素子保持枠８に形成した係合穴１９に係合して、撮像素子保持枠８が機械的に固定されることにより、手ぶれ補正機構９の各コイル１６ａ，１６ｂ等への通電をＯＦＦにすることができる。これにより、消費電力の低減を図ることができる。 Furthermore, also in this embodiment, when the power switch (not shown) of the digital camera 1 is ON and the camera shake correction switch (not shown) is OFF, the fixing pin 23 provided on one end side of the fixing lever 22 is an image sensor. Engagement with the engagement hole 19 formed in the holding frame 8 to mechanically fix the image sensor holding frame 8, thereby turning off the energization to the coils 16 a and 16 b of the camera shake correction mechanism 9. Can do. Thereby, power consumption can be reduced.

また、固定レバー２２の組付け誤差等により固定レバー２２の位置が少しずれていても、レバー受部材５１が作動軸４６に噛合しているので、この噛合位置を調整することにより、レバー受部材５１の軸方向の位置が変化して固定レバー２２の位置ずれが修正される。これにより、固定レバーを精度よく揺動させることができる。 Even if the position of the fixed lever 22 is slightly shifted due to an assembly error of the fixed lever 22 or the like, the lever receiving member 51 is engaged with the operating shaft 46. Therefore, the lever receiving member can be adjusted by adjusting the engagement position. The position of 51 in the axial direction is changed, and the displacement of the fixing lever 22 is corrected. Thereby, a fixed lever can be rock | fluctuated accurately.

本発明の実施形態１に係る撮像装置としてのデジタルカメラの一例を示す正面図。1 is a front view showing an example of a digital camera as an imaging apparatus according to Embodiment 1 of the present invention. 本発明の実施形態１に係るデジタルカメラのレンズ鏡胴がレンズ鏡胴収納筒部内の沈胴位置に収納されている状態を示す断面図。Sectional drawing which shows the state in which the lens barrel of the digital camera which concerns on Embodiment 1 of this invention is accommodated in the retracted position in a lens barrel accommodation cylinder part. 本発明の実施形態１に係るデジタルカメラのベース板の前面側を示す概略斜視図。1 is a schematic perspective view showing a front side of a base plate of a digital camera according to Embodiment 1 of the present invention. 図３のＡ−Ａ線断面図。AA line sectional view of Drawing 3. 本発明の実施形態１に係るデジタルカメラのベース板に一体的に形成したレンズ鏡胴収納筒部の外観を示す斜視図。FIG. 3 is a perspective view showing an external appearance of a lens barrel housing cylinder part formed integrally with a base plate of the digital camera according to Embodiment 1 of the present invention. 本発明の実施形態１に係るデジタルカメラの撮像素子保持枠を示す斜視図。1 is a perspective view showing an image sensor holding frame of a digital camera according to Embodiment 1 of the present invention. 本発明の実施形態１に係るデジタルカメラの変形例における撮像素子保持枠を示す斜視図。The perspective view which shows the image pick-up element holding frame in the modification of the digital camera which concerns on Embodiment 1 of this invention. カム面を有する回転伝達ギヤを示す斜視図。The perspective view which shows the rotation transmission gear which has a cam surface. （ａ）は、カム面を有する回転伝達ギヤを示す平面図、（ｂ）は、回転伝達ギヤ内のカム面の一部を示す断面図。(A) is a top view which shows the rotation transmission gear which has a cam surface, (b) is sectional drawing which shows a part of cam surface in a rotation transmission gear. 本発明の実施形態１に係るデジタルカメラのレンズ鏡胴がレンズ鏡胴収納筒部内から繰り出された状態を示す断面図。Sectional drawing which shows the state which the lens barrel of the digital camera which concerns on Embodiment 1 of this invention extended from the lens barrel storage cylinder part. 本発明の実施形態１の変形例における固定レバーの先端側をベース板に付勢する板ばね部材を備えたベース板を示す斜視図。The perspective view which shows the base plate provided with the leaf | plate spring member which urges | biases the front end side of the fixing lever in the modification of Embodiment 1 of this invention to a base plate. 本発明の実施形態１の変形例における板ばね部材を示す斜視図。The perspective view which shows the leaf | plate spring member in the modification of Embodiment 1 of this invention. 本発明の実施形態２に係るデジタルカメラのベース板の前面側を示す正面図。The front view which shows the front side of the base board of the digital camera which concerns on Embodiment 2 of this invention. 図１３のＢ−Ｂ線断面図。FIG. 14 is a sectional view taken along line BB in FIG. 13. 本発明の実施形態２に係るデジタルカメラの固定機構を示す斜視図。The perspective view which shows the fixing mechanism of the digital camera which concerns on Embodiment 2 of this invention. 本発明の実施形態２に係るデジタルカメラの往復動機構を示す斜視図。The perspective view which shows the reciprocation mechanism of the digital camera which concerns on Embodiment 2 of this invention. 本発明の実施形態２に係るデジタルカメラの往復動機構を示す側面図。The side view which shows the reciprocation mechanism of the digital camera which concerns on Embodiment 2 of this invention. 本発明の実施形態２に係るデジタルカメラのレンズ鏡胴がレンズ鏡胴収納筒部内から繰り出された状態を示す断面図。Sectional drawing which shows the state from which the lens barrel of the digital camera which concerns on Embodiment 2 of this invention was drawn | fed out from the lens barrel storage cylinder part.

Explanation of symbols

１デジタルカメラ（撮像装置）
３撮影レンズ系（撮像光学系）
４レンズ鏡胴（鏡胴）
５レンズ鏡胴収納筒部
６ベース板
７撮像素子
８撮像素子保持枠（枠部材）
９、９ａ手ぶれ補正機構（手ぶれ補正手段）
１０、１０ａ保持機構（保持手段）
１１スライド枠
１２スライド保持枠
１９係合穴（係合凹部）
２０駆動モータ
２１往復動機構（固定レバー揺動手段）
２２固定レバー
２３固定ピン（係合部材）
２４板ばね部材
２７、４４回転伝達ギヤ
２９作動軸
３１，４７カムフォロア
３３、４５ａカム面
３６揺動軸（軸部材）
３７ガイドピン
４５カムギヤ
４８第１コイルばね
４９第２コイルばね 1 Digital camera (imaging device)
3 Shooting lens system (imaging optical system)
4 Lens barrel (lens barrel)
5 Lens barrel storage tube 6 Base plate 7 Image sensor 8 Image sensor holding frame (frame member)
9, 9a Camera shake correction mechanism (camera shake correction means)
10, 10a Holding mechanism (holding means)
11 Slide frame 12 Slide holding frame 19 Engagement hole (engagement recess)
20 drive motor 21 reciprocating mechanism (fixed lever swinging means)
22 Fixing lever 23 Fixing pin (engaging member)
24 Leaf spring member 27, 44 Rotation transmission gear 29 Actuating shaft 31, 47 Cam follower 33, 45a Cam surface 36 Oscillating shaft (shaft member)
37 Guide pin 45 Cam gear 48 First coil spring 49 Second coil spring

Claims

An imaging device that converts a subject image into an electrical signal by photoelectric conversion, a photographing optical system that forms a subject image on the imaging device, and the photographing optical system are provided, and are extendable in the optical axis direction of the photographing optical system A lens barrel, a frame member that holds the image sensor movably in a plane perpendicular to the optical axis, and a camera shake correction by moving the frame member in a plane perpendicular to the optical axis. In an imaging apparatus having a camera shake correction unit to perform,
Holding means for holding the image sensor in a predetermined position;
The holding means has one end side extending to the vicinity of the frame member and the other end side positioned outside the lens barrel;
A shaft member that holds the one end side of the fixed lever so as to be swingable substantially in the optical axis direction;
An engagement member that is provided on one end of the fixed lever and that removably engages with an engagement recess provided in the frame member to restrict movement of the frame member;
A fixed lever oscillating means provided on the other end side of the fixed lever, and configured to oscillate the one end side of the fixed lever substantially in the optical axis direction by oscillating the shaft member;
When the lens barrel is extended to the subject side and a predetermined space is formed between the lens barrel and the frame member, the one end side of the fixed lever is moved substantially to the light by the operation of the fixed lever swinging means. Swing in the axial direction,
An imaging apparatus characterized by that.

The fixed lever swinging means was installed on the outer surface side of the cylindrical member provided with the lens barrel inside,
The imaging apparatus according to claim 1.

One end side of the engaging member is formed in a spherical shape,
The imaging apparatus according to claim 1, wherein the imaging apparatus is configured as described above.

The engagement concave portion is inclined so as to spread from the square-shaped bottom portion toward the square-shaped opening end on the object side in the optical axis direction.
The imaging apparatus according to any one of claims 1 to 3, wherein the imaging apparatus is characterized in that

The engaging recess is inclined so as to spread from the circular bottom to the circular opening end on the object side in the optical axis direction.
The imaging apparatus according to any one of claims 1 to 3, wherein the imaging apparatus is characterized in that

A guide hole is provided substantially along the optical axis direction of the fixed lever, and a guide pin that can be inserted into the guide hole is provided on the object side of the base plate in the optical axis direction.
The imaging device according to any one of claims 1 to 5, wherein

A first urging member for urging one end side of the fixing lever toward the base plate side from the shaft member;
The imaging apparatus according to any one of claims 1 to 6, wherein the imaging apparatus is configured as described above.

A second biasing member is provided for biasing the vicinity of the guide hole of the fixed lever in a direction perpendicular to the longitudinal direction of the fixed lever;
The imaging apparatus according to claim 6.

The fixed lever swinging means is held movably in the optical axis direction, and has an operating shaft in which the other end side of the fixed lever is connected to one end side on the base plate side, and is rotatable on a peripheral surface of the operating shaft. And a cam member that is loosely inserted so as to be movable in the optical axis direction, a rotation drive means for rotating the cam member, a cam surface formed on a surface of the cam member on the base plate side, and the base plate A cam follower that contacts the cam surface from the side, and a third biasing member that biases the cam surface toward one end of the cam follower,
By rotating the cam member forward / reversely by forward / reverse rotation drive of the rotation drive means, the cam surface is slidably contacted with the cam follower, and the operating shaft is reciprocated integrally with the cam member, and the other end side is Rocking the fixed lever connected,
The imaging apparatus according to any one of claims 1 to 8, wherein the imaging apparatus is characterized.

A screw groove on a peripheral surface on one end side of the base plate side of the operating shaft, and connecting the other end side of the fixed lever to a lever receiving member meshing with the screw groove;
The imaging apparatus according to claim 9.

A fourth biasing member that biases the base plate side of the operating shaft toward the cam member;
The imaging apparatus according to any one of claims 1 to 10, wherein the imaging apparatus is characterized in that