JP2016151624A - Lens drive device with hand tremor correction function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens drive device with hand tremor correction function that has a spring member on a front side or a linear spring member hardly damaged even when impact power due to a drop and the like is applied, and can maintain a stable hand tremor correction function.SOLUTION: A lens drive device with hand tremor correction function comprises: a focus unit that causes a lens holder holding a lens to be moved in an optical axis direction with a subject direction as the front of the optical axis direction; a hand tremor correction unit that causes the focus unit to be oscillated in a direction orthogonal to the optical axis direction; and a spring member that extends in the optical axis direction, and couples the focus unit to the hand tremor correction unit. The lens drive device therewith is configured to comprise: a flexible member that is coupled to an end of the spring member; and a stiffened member that is provided in at least any one of the front of the optical axis direction of the flexible member and the rear of the optical axis direction thereof, protrudes outwardly of a coupling part of the end of the spring member and the flexible member, and opposes the flexible member in the optical axis direction with an air gap spaced.SELECTED DRAWING: Figure 1

Description

本発明は、携帯電話等に用いられるカメラのレンズ駆動装置に関し、特に、カメラをオートフォーカス駆動させると共に、カメラに生じる手振れを補正する手振れ補正機能付レンズ駆動装置に関する。   The present invention relates to a lens driving device for a camera used in a mobile phone or the like, and more particularly, to a lens driving device with a camera shake correction function for driving a camera with autofocus and correcting camera shake occurring in the camera.

手振れ補正機能付レンズ駆動装置は、オートフォーカス機能により焦点合わせを行いつつ、撮影時に生じる手振れに対応して、レンズの光軸と直角となる（直交する）方向にレンズを揺動させてイメージセンサ上に結像させた像のブレを抑制する。例えば、特許文献１には、レンズをフォーカス駆動するフォーカスユニットを、光軸方向に延在する線状のバネ部材により光軸と直角な方向に揺動可能に懸架支持して、手振れ補正ユニットによりフォーカスユニットを揺動させることによって像のブレを抑制する手振れ補正機能付レンズ駆動装置が提案されている。   The lens driving device with a camera shake correction function performs image focusing by using an autofocus function and swings the lens in a direction perpendicular to (orthogonal to) the optical axis of the lens in response to camera shake that occurs during shooting. Suppresses blurring of the image formed above. For example, in Patent Document 1, a focus unit that drives a lens to focus is suspended and supported by a linear spring member extending in the optical axis direction so as to be swingable in a direction perpendicular to the optical axis. A lens driving device with a camera shake correction function that suppresses blurring of an image by swinging a focus unit has been proposed.

図５は、従来技術に係る手振れ補正機能付レンズ駆動装置２００を示す図である。図５（ａ）は手振れ補正機能付レンズ駆動装置２００の分解斜視図であり、図５（ｂ）は手振れ補正機能付レンズ駆動装置２００の要部断面図である。なお、図示しないレンズの光軸方向をＺ（Ｚ軸）方向とし、Ｚ軸と直交する２方向をＸ（Ｘ軸）方向及びＹ（Ｙ軸）方向とし、被写体方向を光軸方向前方（＋Ｚ側，前側）とする。   FIG. 5 is a diagram showing a lens driving device 200 with a camera shake correction function according to the prior art. 5A is an exploded perspective view of the lens driving device 200 with a camera shake correction function, and FIG. 5B is a cross-sectional view of the main part of the lens driving device 200 with a camera shake correction function. Note that the optical axis direction of a lens (not shown) is the Z (Z axis) direction, the two directions orthogonal to the Z axis are the X (X axis) direction and the Y (Y axis) direction, and the subject direction is forward (+ Z) in the optical axis direction. Side, front side).

図５（ａ）に示すように、手振れ補正機能付レンズ駆動装置２００は、シールドケース２１５を備え、全体として直方体形状をなす。シールドケース２１５の中央部は、Ｚ軸方向に沿って円形に開口する。また、手振れ補正機能付レンズ駆動装置２００は、後述するレンズホルダー２０３が図示しないレンズを保持する。   As shown in FIG. 5A, the lens driving device 200 with a camera shake correction function includes a shield case 215 and has a rectangular parallelepiped shape as a whole. The central part of the shield case 215 opens in a circle along the Z-axis direction. Further, in the lens driving device 200 with a camera shake correction function, a lens holder 203 described later holds a lens (not shown).

手振れ補正機能付レンズ駆動装置２００は、フォーカスユニット２０１と手振れ補正ユニット２０２とにより構成されている。   The lens driving device 200 with a camera shake correction function includes a focus unit 201 and a camera shake correction unit 202.

フォーカスユニット２０１は、レンズホルダー２０３と、フォーカスコイル２０４と、マグネット２０５と、マグネットホルダー２０６と、板状をなすバネ部材２０７と、スペーサー２０８とを備える。また、手振れ補正ユニット２０２は、揺動用コイル２０９と、配線基板２１１と、接続基板２１２と、線状のバネ部材２１０と、基台２１３とを備える。   The focus unit 201 includes a lens holder 203, a focus coil 204, a magnet 205, a magnet holder 206, a plate-like spring member 207, and a spacer 208. The camera shake correction unit 202 includes a swing coil 209, a wiring board 211, a connection board 212, a linear spring member 210, and a base 213.

フォーカスユニット２０１のレンズホルダー２０３は、Ｚ軸方向に開口した筒状の部材であり、内周側に図示しないレンズを保持する。レンズホルダー２０３の外周側には、フォーカスコイル２０４がレンズホルダー２０３の外周形状に沿うように巻回される。フォーカスコイル２０４の外径側には、永久磁石等により形成されたマグネット２０５（合計で４個）がフォーカスコイル２０４と径方向に空隙を隔てて対向する。マグネット２０５は、直方体形状をなし、四角枠状のマグネットホルダー２０６に保持される。また、マグネット２０５は、磁極面をＸ軸方向及びＹ軸方向に向けて、Ｚ軸周りに９０度の間隔で配設される。   The lens holder 203 of the focus unit 201 is a cylindrical member that opens in the Z-axis direction, and holds a lens (not shown) on the inner peripheral side. A focus coil 204 is wound around the outer circumference of the lens holder 203 so as to follow the outer circumference of the lens holder 203. On the outer diameter side of the focus coil 204, magnets 205 (four in total) formed of permanent magnets or the like face the focus coil 204 with a gap in the radial direction. The magnet 205 has a rectangular parallelepiped shape and is held by a square frame-shaped magnet holder 206. The magnets 205 are arranged at intervals of 90 degrees around the Z axis with the magnetic pole surfaces facing the X axis direction and the Y axis direction.

板状をなすバネ部材２０７は、前側のバネ部材２０７Ａ及び後側のバネ部材２０７Ｂよりなる。前側のバネ部材２０７Ａ及び後側のバネ部材２０７Ｂの内周部は、レンズホルダー２０３の＋Ｚ側の端面及びレンズホルダー２０３の−Ｚ側の端面に接続される。前側のバネ部材２０７Ａの外周部は、マグネットホルダー２０６の＋Ｚ側の端面に接続される。後側のバネ部材２０７Ｂの外周部は、スペーサー２０８とともにマグネットホルダー２０６の−Ｚ側の端面に接続される。このようにして、前側のバネ部材２０７Ａ及び後側のバネ部材２０７Ｂは、レンズホルダー２０３をＺ軸方向へ移動可能に懸架支持する。   The plate-shaped spring member 207 includes a front spring member 207A and a rear spring member 207B. The inner peripheral portions of the front spring member 207 </ b> A and the rear spring member 207 </ b> B are connected to the + Z side end surface of the lens holder 203 and the −Z side end surface of the lens holder 203. The outer peripheral portion of the front spring member 207 </ b> A is connected to the + Z side end face of the magnet holder 206. The outer peripheral portion of the rear spring member 207 </ b> B is connected to the −Z side end surface of the magnet holder 206 together with the spacer 208. In this way, the front spring member 207A and the rear spring member 207B suspend and support the lens holder 203 so as to be movable in the Z-axis direction.

以上のように構成されたフォーカスユニット２０１のフォーカスコイル２０４は、当該フォーカスコイル２０４への通電に伴いＺ軸方向のローレンツ力が発生し、レンズホルダー２０３をＺ軸方向へ移動させる。   The focus coil 204 of the focus unit 201 configured as described above generates a Lorentz force in the Z-axis direction as the focus coil 204 is energized, and moves the lens holder 203 in the Z-axis direction.

手振れ補正ユニット２０２は、中央部が開口し、Ｚ軸方向を向いた板状の基台２１３を備える。基台２１３の＋Ｚ面上には、外部の制御回路と接続される接続基板２１２が取り付けけられ、当該接続基板２１２の＋Ｚ面上に配線基板２１１が取り付けられる。配線基板２１１には、電力供給路が形成されており、当該電力供給路上に揺動用コイル２０９が接続される。   The camera shake correction unit 202 includes a plate-like base 213 that is open at the center and faces the Z-axis direction. A connection substrate 212 connected to an external control circuit is attached on the + Z surface of the base 213, and a wiring substrate 211 is attached on the + Z surface of the connection substrate 212. A power supply path is formed in the wiring board 211, and a swinging coil 209 is connected to the power supply path.

揺動用コイル２０９は、Ｚ軸方向に巻回されている。また、揺動用コイル２０９は、配線基板２１１の−Ｘ側及び＋Ｘ側に配設されるＸ側の揺動用コイル２０９Ｘと、配線基板２１１の−Ｙ側及び＋Ｙ側に配設されるＹ側の揺動用コイル２０９Ｙとからなる。揺動用コイル２０９は、マグネット２０５の−Ｚ側の側面とＺ軸方向に空隙を隔てて対向する。   The swing coil 209 is wound in the Z-axis direction. The swing coil 209 includes an X-side swing coil 209 </ b> X disposed on the −X side and + X side of the wiring board 211, and a Y-side disposed on the −Y side and + Y side of the wiring board 211. It comprises an oscillating coil 209Y. The swinging coil 209 faces the −Z side surface of the magnet 205 with a gap in the Z-axis direction.

バネ部材２１０は、Ｚ軸方向に延在する線状のバネであって、基台２１３の四隅に配設される。バネ部材２１０は、当該バネ部材２１０の前側端部が前側のバネ部材２０７Ａに連結され、バネ部材２１０の後側端部が基台２１３に連結されることにより、フォーカスユニット２０１をＸ軸方向及びＹ軸方向へ揺動可能に支持する。   The spring member 210 is a linear spring extending in the Z-axis direction, and is disposed at the four corners of the base 213. The spring member 210 has the front end of the spring member 210 connected to the front spring member 207A and the rear end of the spring member 210 connected to the base 213, so that the focus unit 201 is moved in the X-axis direction and Supports swingable in the Y-axis direction.

以上のように構成された手振れ補正ユニット２０２のＸ側の揺動用コイル２０９Ｘは、当該Ｘ側の揺動用コイル２０９Ｘへの通電に伴い、Ｘ軸方向を向いたローレンツ力を発生させ、マグネット２０５に生じた反力によりフォーカスユニット２０１をＸ軸方向へ揺動させる。また、Ｙ側の揺動用コイル２０９Ｙは、当該Ｙ側の揺動用コイル２０９Ｙへの通電に伴い、Ｙ軸方向を向いたローレンツ力を発生させ、マグネット２０５に生じた反力によりフォーカスユニット２０１をＹ軸方向へ揺動させる。   The X-side swing coil 209X of the image stabilization unit 202 configured as described above generates a Lorentz force in the X-axis direction in response to energization of the X-side swing coil 209X, and causes the magnet 205 to The focus unit 201 is swung in the X-axis direction by the generated reaction force. Further, the Y-side swing coil 209Y generates a Lorentz force directed in the Y-axis direction in response to energization to the Y-side swing coil 209Y, and the reaction force generated in the magnet 205 causes the focus unit 201 to be moved to Y. Swing in the axial direction.

特開２０１３−２４９３８号公報JP 2013-24938 A

図５（ｂ）に示すように、マグネットホルダー２０６は、前側のバネ部材２０７Ａと、線状のバネ部材２１０との連結部において内径方向に退避している（切り欠かれている）。また、前側のバネ部材２０７Ａは、バネ部材２１０との連結部でマグネットホルダー２０６の外側に突き出ている。そのため、マグネットホルダー２０６や基台２１３に落下等によって衝撃力が加わったときに、前側のバネ部材２０７Ａが撓み変形することによりバネ部材２１０の破断や座屈等の損傷を回避できる。   As shown in FIG. 5B, the magnet holder 206 is retracted (notched) in the inner diameter direction at the connecting portion between the front spring member 207A and the linear spring member 210. Further, the front spring member 207 </ b> A protrudes to the outside of the magnet holder 206 at the connecting portion with the spring member 210. Therefore, when an impact force is applied to the magnet holder 206 or the base 213 by dropping or the like, the front spring member 207A is bent and deformed, so that damage such as breakage or buckling of the spring member 210 can be avoided.

しかしながら、マグネットホルダー２０６や基台２１３に衝撃力が加わると、マグネットホルダー２０６と基台２１３との相対位置が大きくずれ、前側のバネ部材２０７Ａは過剰に撓んで塑性変形してしまう。また、当該塑性変形に伴って線状のバネ部材２１０も破断や座屈等を引き起こすおそれが高くなる。塑性変形や破断等が生じると、前側のバネ部材２０７Ａやバネ部材２１０のバネとしての機能が損なわれるだけでなく、バネ部材２０７Ａやバネ部材２１０の変形によりレンズホルダー２０３が傾くことがある。   However, when an impact force is applied to the magnet holder 206 and the base 213, the relative position between the magnet holder 206 and the base 213 is greatly shifted, and the front spring member 207A is excessively bent and plastically deformed. Further, along with the plastic deformation, the linear spring member 210 is also more likely to cause breakage, buckling, and the like. When plastic deformation, breakage, or the like occurs, not only the functions of the front spring member 207A and the spring member 210 as a spring are impaired, but also the lens holder 203 may tilt due to the deformation of the spring member 207A and the spring member 210.

バネとしての機能が損なわれた状態やレンズホルダー２０３が傾いた状態で撮影すると、撮影画像が歪曲するという問題が生じることや、手振れ補正ユニット２０２がフォーカスユニット２０１をＸ軸方向及びＹ軸方向へ正確に揺動させることができなくなったりすることで手振れ補正機能付レンズ駆動装置２００の機能が損なわれてしまう。   If shooting is performed with the spring function impaired or the lens holder 203 tilted, the captured image may be distorted, or the camera shake correction unit 202 may move the focus unit 201 in the X-axis direction and the Y-axis direction. The function of the lens driving device with a camera shake correction function 200 is impaired due to the fact that the lens cannot be accurately swung.

本発明は、落下等によって衝撃力が加わっても、前側のバネ部材や線状のバネ部材が損傷を受け難く、安定した手振れ補正機能を維持することのできる手振れ補正機能付レンズ駆動装置を提供することを目的とする。   The present invention provides a lens driving device with a camera shake correction function that is capable of maintaining a stable camera shake correction function, even if an impact force is applied due to dropping or the like, and the front spring member and the linear spring member are not easily damaged. The purpose is to do.

本発明は、被写体方向をレンズの光軸方向前方として、レンズを保持するレンズホルダーを光軸方向に移動させるフォーカスユニットと、フォーカスユニットを光軸方向と直交する方向に揺動させる手振れ補正ユニットと、光軸方向に延在し、フォーカスユニットと手振れ補正ユニットとを連結するバネ部材とを備えた手振れ補正機能付レンズ駆動装置であって、バネ部材の端部と連結される可撓部材と、可撓部材の光軸方向前方及び光軸方向後方の少なくともいずれか一方に設けられ、光軸と直交する方向に延在してバネ部材の端部と可撓部材との連結箇所よりも外側に突き出し、可撓部材と空隙を隔てて光軸方向に対向する制撓部材とを備えた構成とした。
上記構成によれば、フォーカスユニットや手振れ補正ユニットに衝撃力が加わっても、可撓部材の過剰な撓み変形が制約されて、可撓部材やバネ部材が変形することやバネとしての機能を損なう恐れを軽減できる。よって、手振れ補正機能付レンズ駆動装置の機能が損なわれることがない。 The present invention provides a focus unit that moves the lens holder that holds the lens in the optical axis direction with the subject direction in front of the lens in the optical axis direction, and a camera shake correction unit that swings the focus unit in a direction perpendicular to the optical axis direction. A lens driving device with a camera shake correction function that extends in the optical axis direction and includes a spring member that connects the focus unit and the camera shake correction unit, and a flexible member that is connected to an end of the spring member; Provided in at least one of the front and rear of the flexible member in the optical axis direction, and extends in a direction orthogonal to the optical axis so as to be outside the connecting portion between the end of the spring member and the flexible member. The protruding member is configured to include a flexible member and a deflection member that faces the optical axis with a gap therebetween.
According to the above configuration, even when an impact force is applied to the focus unit or the camera shake correction unit, excessive bending deformation of the flexible member is restricted, and the flexible member or the spring member is deformed or the function as the spring is impaired. Can reduce fear. Therefore, the function of the lens driving device with a camera shake correction function is not impaired.

また、本願発明は、可撓部材と制撓部材との間には、緩衝部材が設けられた構成とした。
上記構成によれば、マグネットホルダーや基台に衝撃力が加わった時に、可撓部材及びバネ部材への衝撃力の伝播が緩衝され、可撓部材及びバネ部材を強力に保護できるようになる。 Moreover, this invention set it as the structure by which the buffer member was provided between the flexible member and the deflection member.
According to the above configuration, when an impact force is applied to the magnet holder or the base, propagation of the impact force to the flexible member and the spring member is buffered, and the flexible member and the spring member can be strongly protected.

なお、前記発明の概要は、本発明の必要な全ての特徴を列挙したものではなく、これらの特徴群のサブコンビネーションもまた、発明となりうる。   The summary of the invention does not list all necessary features of the present invention, and sub-combinations of these feature groups can also be the invention.

本発明の実施形態１に係る手振れ補正機能付レンズ駆動装置の外観を示す斜視図及び内部構造を示す分解斜視図である。FIG. 2 is a perspective view illustrating an appearance of a lens driving device with a camera shake correction function according to the first embodiment of the present invention and an exploded perspective view illustrating an internal structure. 本発明の実施形態１に係る手振れ補正機能付レンズ駆動装置の要部斜視図及びその断面図である。FIG. 2 is a perspective view of a main part of a lens driving device with a camera shake correction function according to Embodiment 1 of the present invention and a sectional view thereof. 本発明の実施形態１に係る手振れ補正機能付レンズ駆動装置の変形例における要部斜視図及びその断面図である。FIG. 6 is a perspective view of a main part and a cross-sectional view of a modification of the lens driving device with a camera shake correction function according to the first embodiment of the present invention. 本発明の実施形態２に係る手振れ補正機能付レンズ駆動装置における要部分解斜視図及び断面模式図である。FIG. 7 is an exploded perspective view and a schematic cross-sectional view of a main part in a lens driving device with a camera shake correction function according to a second embodiment of the present invention. 従来の手振れ補正機能付レンズ駆動装置の内部構造を示す分解斜視図及び要部断面模式図である。It is the disassembled perspective view and principal part cross-sectional schematic diagram which show the internal structure of the conventional lens drive device with a camera-shake correction function.

以下、実施の形態を通じて本発明を詳説するが、以下の実施の形態は特許請求の範囲に係る発明を限定するものではなく、また、実施の形態の中で説明される特徴の組み合わせの全てが発明の解決手段に必須であるとは限らない。   Hereinafter, the present invention will be described in detail through embodiments. However, the following embodiments do not limit the invention according to the claims, and all combinations of features described in the embodiments are included. It is not necessarily essential for the solution of the invention.

図１（ａ）は実施形態１に係る手振れ補正機能付レンズ駆動装置１００の外観を示す斜視図であり、図１（ｂ）は手振れ補正機能付レンズ駆動装置１００の分解斜視図である。また、図２（ａ）は手振れ補正機能付レンズ駆動装置１００の要部斜視図であり、図２(ｂ)は手振れ補正機能付レンズ駆動装置１００の要部断面図である。以下、不図示のレンズの光軸方向をＺ軸方向とし、被写体側をＺ軸方向前方（＋Ｚ側，前側）とし、Ｚ軸と直交する２方向をＸ軸方向及びＹ軸方向として説明する。   FIG. 1A is a perspective view illustrating an appearance of the lens driving device 100 with a camera shake correction function according to the first embodiment, and FIG. 1B is an exploded perspective view of the lens driving device 100 with a camera shake correction function. 2A is a perspective view of a main part of the lens driving device 100 with a camera shake correction function, and FIG. 2B is a cross-sectional view of the main part of the lens driving device 100 with a camera shake correction function. In the following description, the optical axis direction of a lens (not shown) is defined as the Z-axis direction, the subject side is defined as the front in the Z-axis direction (+ Z side, front side), and two directions orthogonal to the Z-axis are defined as the X-axis direction and Y-axis direction.

図１（ａ）に示すように、手振れ補正機能付レンズ駆動装置１００は、全体として直方体形状をなす。図１（ｂ）に示すように、手振れ補正機能付レンズ駆動装置１００は、フォーカスユニット１０１と、手振れ補正ユニット１０２とにより構成されている。   As shown in FIG. 1A, the lens driving device 100 with a camera shake correction function has a rectangular parallelepiped shape as a whole. As illustrated in FIG. 1B, the lens driving device 100 with a camera shake correction function includes a focus unit 101 and a camera shake correction unit 102.

図１（ｂ）に示すように、フォーカスユニット１０１は、レンズホルダー１０３と、フォーカスコイル１０４と、マグネット１０５と、マグネットホルダー１０６と、板状のバネ部材１０７とを備える。手振れ補正ユニット１０２は、揺動用コイル１０８と、配線基板１１０と、線状のバネ部材１１１と、基台１１２とを備える。   As shown in FIG. 1B, the focus unit 101 includes a lens holder 103, a focus coil 104, a magnet 105, a magnet holder 106, and a plate-like spring member 107. The camera shake correction unit 102 includes a swing coil 108, a wiring board 110, a linear spring member 111, and a base 112.

フォーカスユニット１０１のレンズホルダー１０３は、Ｚ軸方向に開口した筒状の部材であり、内周側にレンズを保持する。レンズホルダー１０３の外周側には、フォーカスコイル１０４がレンズホルダー１０３の外周形状に沿うように巻回される。フォーカスコイル１０４の外径側には、永久磁石等により形成されたマグネット１０５（本実施形態では合計４個）がフォーカスコイル１０４と径方向に空隙を隔てて対向する。マグネット１０５は、直方体形状をなしており、四角枠状のマグネットホルダー１０６によって保持される。４個のマグネット１０５は、磁極面がＸ軸方向及びＹ軸方向を向いた状態でＺ軸周りに９０度の間隔で配設される。   The lens holder 103 of the focus unit 101 is a cylindrical member that opens in the Z-axis direction, and holds the lens on the inner peripheral side. A focus coil 104 is wound around the outer circumference of the lens holder 103 so as to follow the outer circumference of the lens holder 103. On the outer diameter side of the focus coil 104, magnets 105 (four in this embodiment in total) formed of permanent magnets or the like face the focus coil 104 with a gap in the radial direction. The magnet 105 has a rectangular parallelepiped shape and is held by a square frame-shaped magnet holder 106. The four magnets 105 are arranged at intervals of 90 degrees around the Z axis with the magnetic pole surfaces facing the X axis direction and the Y axis direction.

バネ部材１０７は、板状であり、前側のバネ部材１０７Ａ及び後側のバネ部材１０７Ｂよりなる。前側のバネ部材１０７Ａ及び後側のバネ部材１０７Ｂの内周部は、それぞれレンズホルダー１０３の＋Ｚ側の端面及びレンズホルダー１０３の−Ｚ側の端面と接続される。また、前側のバネ部材１０７Ａの外周部は、マグネットホルダー１０６の＋Ｚ側の端面に接続される。また、後側のバネ部材１０７Ｂの外周部は、マグネットホルダー１０６の−Ｚ側の端面に接続される。このようにして、前側のバネ部材１０７Ａ及び後側のバネ部材１０７Ｂは、レンズホルダー１０３をＺ軸方向へ移動可能に懸架支持する。   The spring member 107 is plate-shaped and includes a front spring member 107A and a rear spring member 107B. The inner peripheral portions of the front spring member 107A and the rear spring member 107B are connected to the + Z side end surface of the lens holder 103 and the −Z side end surface of the lens holder 103, respectively. Further, the outer peripheral portion of the front spring member 107 </ b> A is connected to the + Z side end face of the magnet holder 106. Further, the outer peripheral portion of the rear spring member 107 </ b> B is connected to the −Z side end surface of the magnet holder 106. Thus, the front spring member 107A and the rear spring member 107B suspend and support the lens holder 103 so as to be movable in the Z-axis direction.

以上のように構成されたフォーカスユニット１０１は、フォーカスコイル１０４への通電に伴い、Ｚ軸方向を向いたローレンツ力がフォーカスコイル１０４に発生し、レンズホルダー１０３をＺ軸方向へ移動させる。   In the focus unit 101 configured as described above, a Lorentz force directed in the Z-axis direction is generated in the focus coil 104 as the focus coil 104 is energized, and the lens holder 103 is moved in the Z-axis direction.

手振れ補正ユニット１０２の基台１１２は、中央部が開口し、Ｚ軸方向を向いた板状の部材である。基台１１２の＋Ｚ側の面には、可撓性を有する配線基板１１０が取り付けけられる。配線基板１１０には電力供給路が形成されており、当該配線基板１１０の＋Ｚ側の面に揺動用コイル１０８が接続される。   The base 112 of the camera shake correction unit 102 is a plate-like member having an opening at the center and facing the Z-axis direction. A flexible wiring board 110 is attached to the surface of the base 112 on the + Z side. A power supply path is formed in the wiring board 110, and the swinging coil 108 is connected to the + Z side surface of the wiring board 110.

揺動用コイル１０８は、Ｚ軸方向に巻回されて、配線基板１１０の−Ｘ側及び＋Ｘ側に配設されるＸ側の揺動用コイル１０８Ｘと、配線基板１１０の−Ｙ側及び＋Ｙ側に配設されるＹ側の揺動用コイル１０８Ｙとよりなる。揺動用コイル１０８は、マグネット１０５の−Ｚ側の側面とＺ軸方向に空隙を隔てて対向する。   The swing coil 108 is wound in the Z-axis direction, and is disposed on the −X side and the + X side of the wiring board 110, and on the −Y side and the + Y side of the wiring board 110. The Y-side swing coil 108Y is provided. The swinging coil 108 faces the −Z side surface of the magnet 105 with a gap in the Z-axis direction.

図２（ａ），（ｂ）に示すように、バネ部材１１１は、Ｚ軸方向に延在する線状のバネであって、本実施形態において４本設けられる。バネ部材１１１の前側端部１１１ａは、前側のバネ部材１０７Ａの隅部１０７ｓに設けられた前側連結部Ｒａと連結される。そしてこのとき、前側のバネ部材１０７Ａは、前側の可撓部材として機能する。
バネ部材１１１の後側端部１１１ｂは、配線基板１１０の隅部１１０ｓに設けられた後側連結部Ｒｂと連結され、フォーカスユニット１０１をＸ軸方向及びＹ軸方向へ揺動可能に支持する。そしてこのとき、配線基板１１０は、後側の可撓部材として機能する。 As shown in FIGS. 2A and 2B, the spring members 111 are linear springs extending in the Z-axis direction, and four spring members 111 are provided in this embodiment. The front end portion 111a of the spring member 111 is connected to a front connection portion Ra provided at a corner portion 107s of the front spring member 107A. At this time, the front spring member 107A functions as a front flexible member.
The rear end 111b of the spring member 111 is connected to a rear connecting portion Rb provided at the corner 110s of the wiring board 110, and supports the focus unit 101 so as to be swingable in the X axis direction and the Y axis direction. At this time, the wiring board 110 functions as a rear flexible member.

図２（ｂ）に示すように、マグネットホルダー１０６の＋Ｚ側の面は、隅部１０７ｓに対応する部分（隅部１０７ｓの−Ｚ側）が−Ｚ方向に掘り下げられている（切り欠かれている）。また、隅部１０７ｓの−Ｚ側には、第一の前側制撓部材Ｓａ１が設けられる。第一の前側制撓部材Ｓａ１は、Ｚ軸と直交する方向に延在して、第一の前側空隙Ｋａ１を隔てて前側連結部ＲａとＺ軸方向に対向する。また、第一の前側制撓部材Ｓａ１は、前側連結部Ｒａよりも半径方向外側に突き出している。すなわち、第一の前側制撓部材Ｓａ１の先端部（外周側）の位置ｒＳは、マグネットホルダー１０６の中心Ｏから見て、前側連結部Ｒａの連結位置ｒＲよりも外側に突き出している。
基台１１２の＋Ｚ側の面は、隅部１１０ｓに対応する部分（隅部１１０ｓの−Ｚ側）が−Ｚ方向に掘り下げられている（切り欠かれている）。また、隅部１１０ｓの−Ｚ側には、第一の後側制撓部材Ｓｂ１が設けられている。第一の後側制撓部材Ｓｂ１は、Ｚ軸と直交する方向に延在して、第一の後側空隙Ｋｂ１を隔てて後側連結部ＲｂとＺ軸方向に対向する。また、第一の後側制撓部材Ｓｂ１は、第一の前側制撓部材Ｓａ１と同様に、後側連結部Ｒｂよりも外側に突き出している。 As shown in FIG. 2B, the + Z side surface of the magnet holder 106 has a portion corresponding to the corner portion 107s (the −Z side of the corner portion 107s) dug down in the −Z direction (notched). ) In addition, a first front deflection member Sa1 is provided on the −Z side of the corner portion 107s. The first front deflection member Sa1 extends in a direction orthogonal to the Z axis, and faces the front coupling portion Ra in the Z axis direction with the first front gap Ka1 therebetween. The first front deflection member Sa1 protrudes outward in the radial direction from the front coupling portion Ra. That is, the position rS of the front end portion (outer peripheral side) of the first front deflection member Sa1 protrudes outward from the connection position rR of the front connection portion Ra when viewed from the center O of the magnet holder 106.
On the + Z side surface of the base 112, a portion corresponding to the corner 110s (the −Z side of the corner 110s) is dug down (notched) in the −Z direction. In addition, a first rear deflection member Sb1 is provided on the −Z side of the corner portion 110s. The first rear side deflection member Sb1 extends in a direction orthogonal to the Z axis, and faces the rear side coupling portion Rb in the Z axis direction with the first rear side gap Kb1 therebetween. In addition, the first rear side deflection member Sb1 protrudes outward from the rear side connection portion Rb, like the first front side deflection member Sa1.

そして、手振れ補正ユニット１０２のＸ側の揺動用コイル１０８Ｘに通電すると、Ｘ側の揺動用コイル１０８Ｘには、Ｘ軸方向を向いたローレンツ力が発生する。また、揺動用コイル１０８Ｘへの通電に伴い、マグネット１０５には反力が生じてフォーカスユニット１０１がＸ軸方向へ揺動する。また、Ｙ側の揺動用コイル１０８Ｙに通電に伴い、Ｙ側の揺動用コイル１０８Ｙには、Ｙ軸方向を向いたローレンツ力が発生し、マグネット１０５には反力が生じてフォーカスユニット１０１がＹ軸方向へ揺動する。   When the X-side swing coil 108X of the camera shake correction unit 102 is energized, a Lorentz force directed in the X-axis direction is generated in the X-side swing coil 108X. Further, with energization of the swing coil 108X, a reaction force is generated in the magnet 105 and the focus unit 101 swings in the X-axis direction. As the Y-side swing coil 108Y is energized, a Lorentz force directed in the Y-axis direction is generated in the Y-side swing coil 108Y, and a reaction force is generated in the magnet 105. Swings in the axial direction.

以上のように構成された手振れ補正機能付レンズ駆動装置１００は、落下等によって衝撃力が加わると、フォーカスユニット１０１と手振れ補正ユニット１０２との相対位置がずれる。しかしながら、前側のバネ部材１０７Ａの隅部１０７ｓが−Ｚ方向に撓んだときに、隅部１０７ｓの撓み量は、第一の前側制撓部材Ｓａ１によって制限（抑制）され、隅部１０７ｓの−Ｚ方向への過剰な撓みが防止される。同様に、配線基板１１０の隅部１１０ｓが−Ｚ方向に撓んだときに、隅部１１０ｓの撓み量は、第一の後側制撓部材Ｓｂ１によって制限（抑制）され、隅部１１０ｓの−Ｚ方向への過剰な撓みが防止される。   In the lens driving device with a camera shake correction function 100 configured as described above, the relative position between the focus unit 101 and the camera shake correction unit 102 is shifted when an impact force is applied due to dropping or the like. However, when the corner 107s of the front spring member 107A bends in the -Z direction, the amount of bending of the corner 107s is limited (suppressed) by the first front deflection member Sa1, and- Excessive bending in the Z direction is prevented. Similarly, when the corner portion 110s of the wiring board 110 is bent in the −Z direction, the amount of bending of the corner portion 110s is limited (suppressed) by the first rear side deflection member Sb1, and − Excessive bending in the Z direction is prevented.

また、前側のバネ部材１０７Ａの隅部１０７ｓと配線基板１１０の隅部１１０ｓとが適正に撓むため、バネ部材１１１に伝播される衝撃が緩和されて、バネ部材１１１の破断や座屈を防ぐことができる。これにより、前側のバネ部材１０７Ａの隅部１０７ｓ、配線基板１１０の隅部１１０ｓ及びバネ部材１１１の変形を防ぐことができ、マグネットホルダー１０６を正確な姿勢で支持することが可能となるため、撮影画像が歪曲することがない。よって、手振れ補正ユニット１０２は、フォーカスユニット１０１をＸ軸方向及びＹ軸方向へ正確に揺動させ、適切な手振れ補正を行うことが可能となる。   Further, since the corner portion 107s of the front spring member 107A and the corner portion 110s of the wiring board 110 are appropriately bent, the impact transmitted to the spring member 111 is alleviated to prevent the spring member 111 from being broken or buckled. be able to. Accordingly, the corner 107s of the front spring member 107A, the corner 110s of the wiring board 110, and the spring member 111 can be prevented from being deformed, and the magnet holder 106 can be supported in an accurate posture. The image will not be distorted. Therefore, the camera shake correction unit 102 can swing the focus unit 101 accurately in the X-axis direction and the Y-axis direction and perform appropriate camera shake correction.

なお、実施形態１においては、前側のバネ部材１０７Ａが前側の可撓部材であり、配線基板１１０が後側の可撓部材であるが、これに限定されない。例えば、前側の可撓部材を前側のバネ部材１０７Ａと別体に設け、後側の可撓部材を配線基板１１０と別体に設けるようにしてもよい。また、前側の可撓部材及び後側の可撓部材の両方を設ける必要はなく、前側の可撓部材及び後側の可撓部材のうちいずれか一方のみとし、前側の可撓部材及び後側の可撓部材に対応する箇所に第一の前側制撓部材Ｓａ１及び第一の後側制撓部材Ｓｂ１のいずれか一方を設けるようにしてもよい。   In the first embodiment, the front spring member 107A is a front flexible member and the wiring board 110 is a rear flexible member. However, the present invention is not limited to this. For example, the front flexible member may be provided separately from the front spring member 107 </ b> A, and the rear flexible member may be provided separately from the wiring substrate 110. Further, it is not necessary to provide both the front flexible member and the rear flexible member, and only one of the front flexible member and the rear flexible member is provided, and the front flexible member and the rear flexible member are provided. Any one of the first front side deflection member Sa1 and the first rear side deflection member Sb1 may be provided at a location corresponding to the flexible member.

図３（ａ）は、実施形態１の変形例に係る手振れ補正機能付レンズ駆動装置１００の要部を示す斜視図であり、図３（ｂ）は変形例に係る手振れ補正機能付レンズ駆動装置１００の要部断面図である。本変形例に係る手振れ補正機能付レンズ駆動装置１００においては、上記実施形態１の手振れ補正機能付レンズ駆動装置１００の構成に加え、第二の前側制撓部材Ｓａ２と第二の後側制撓部材Ｓｂ２とが設けられている点において異なる。なお、上記実施形態１と同様の構成は、同一の符号を用いて説明する。   3A is a perspective view illustrating a main part of a lens driving device 100 with a camera shake correction function according to a modification of the first embodiment, and FIG. 3B is a lens driving device with a camera shake correction function according to the modification. FIG. In the lens drive device 100 with a camera shake correction function according to this modification, in addition to the configuration of the lens drive device 100 with a camera shake correction function according to the first embodiment, the second front side deflection member Sa2 and the second rear side deflection are provided. It differs in that the member Sb2 is provided. The same configuration as that of the first embodiment will be described using the same reference numerals.

本変形例に係る手振れ補正機能付レンズ駆動装置１００は、図１（ａ），（ｂ）に示した手振れ補正機能付レンズ駆動装置１００と同様に、フォーカスユニット１０１と手振れ補正ユニット１０２とにより構成されている。
フォーカスユニット１０１は、レンズホルダー１０３と、フォーカスコイル１０４と、マグネット１０５と、マグネットホルダー１０６と、板状のバネ部材１０７と、ホルダーカバー１１３とを備える。手振れ補正ユニット１０２は、揺動用コイル１０８と、配線基板１１０と、線状をなすバネ部材１１１と、基台１１２と、基板カバー１１４とを備える。 The lens driving device 100 with a camera shake correction function according to this modification includes a focus unit 101 and a camera shake correction unit 102 as in the lens driving device 100 with a camera shake correction function shown in FIGS. Has been.
The focus unit 101 includes a lens holder 103, a focus coil 104, a magnet 105, a magnet holder 106, a plate-like spring member 107, and a holder cover 113. The camera shake correction unit 102 includes a swinging coil 108, a wiring board 110, a linear spring member 111, a base 112, and a board cover 114.

図３（ａ），（ｂ）に示すように、バネ部材１１１の前側端部１１１ａは、前側のバネ部材１０７Ａの隅部１０７ｓに設けられた前側連結部Ｒａと連結される。そしてこのとき、前側のバネ部材１０７Ａは、前側の可撓部材として機能する。また、前側のバネ部材１０７Ａの＋Ｚ側には、ホルダーカバー１１３が取り付けられる。
バネ部材１１１の後側端部１１１ｂは、配線基板１１０の隅部１１０ｓに設けられた後側連結部Ｒｂと連結される。配線基板１１０の＋Ｚ側には、基板カバー１１４が取り付けられる。そしてこのとき、配線基板１１０は、後側の可撓部材として機能する。このようにして、手振れ補正ユニット１０２は、フォーカスユニット１０１をＸ軸方向及びＹ軸方向へ揺動可能に支持する。 As shown in FIGS. 3A and 3B, the front end 111a of the spring member 111 is connected to a front connection portion Ra provided at a corner 107s of the front spring member 107A. At this time, the front spring member 107A functions as a front flexible member. A holder cover 113 is attached to the + Z side of the front spring member 107A.
The rear end portion 111 b of the spring member 111 is connected to a rear connection portion Rb provided at the corner portion 110 s of the wiring board 110. A board cover 114 is attached to the + Z side of the wiring board 110. At this time, the wiring board 110 functions as a rear flexible member. In this way, the camera shake correction unit 102 supports the focus unit 101 so as to be swingable in the X-axis direction and the Y-axis direction.

図３（ｂ）に示すように、マグネットホルダー１０６の＋Ｚ側の面は、隅部１０７ｓの−Ｚ側が−Ｚ方向に掘り下げられている（切り欠かれている）。また、隅部１０７ｓの−Ｚ側には、第一の前側制撓部材Ｓａ１が設けられている。第一の前側制撓部材Ｓａ１は、Ｚ軸と直交する方向に延在して、第一の前側空隙Ｋａ１を隔てて前側連結部ＲａとＺ方向に対向する。また、第一の前側制撓部材Ｓａ１は、マグネットホルダー１０６の中心Ｏから見て、前側連結部Ｒａよりも外側に突き出している。ホルダーカバー１１３の−Ｚ側の面は、隅部１０７ｓの＋Ｚ側が＋Ｚ方向に掘り下げられている（切り欠かれている）。隅部１０７ｓの＋Ｚ側には、第二の前側制撓部材Ｓａ２が設けられている。第二の前側制撓部材Ｓａ２は、Ｚ軸と直交する方向に延在して、第二の前側空隙Ｋａ２を隔てて前側連結部ＲａとＺ方向に対向する。また、第二の前側制撓部材Ｓａ２は、第一の前側制撓部材Ｓａ１と同様に、前側連結部Ｒａよりも外側に突き出している。
基台１１２の＋Ｚ側の面は、隅部１１０ｓの−Ｚ側が−Ｚ方向に掘り下げられている（切り欠かれている）。また、隅部１１０ｓの−Ｚ側には、第一の後側制撓部材Ｓｂ１が設けられている。第一の後側制撓部材Ｓｂ１は、Ｚ軸と直交する方向に延在して、第一の後側空隙Ｋｂ１を隔てて後側連結部ＲｂとＺ方向に対向する。また、第一の後側制撓部材Ｓｂ１は、第一の前側制撓部材Ｓａ１と同様に、後側連結部Ｒｂよりも外側に突き出している。基板カバー１１４の−Ｚ側の面は、隅部１１０ｓの＋Ｚ側が＋Ｚ方向に掘り下げられている（切り欠かれている）。また、隅部１１０ｓの＋Ｚ側には、第二の後側制撓部材Ｓｂ２が設けられている。第二の後側制撓部材Ｓｂ２は、Ｚ軸と直交する方向に延在して、第二の後側空隙Ｋｂ２を隔てて後側連結部ＲｂとＺ方向に対向する。また、第二の後側制撓部材Ｓｂ２は、第一の前側制撓部材Ｓａ１と同様に、後側連結部Ｒｂよりも外側に突き出している。 As shown in FIG. 3B, the + Z side surface of the magnet holder 106 is dug down (notched) in the −Z direction on the −Z side of the corner 107s. In addition, a first front deflection member Sa1 is provided on the −Z side of the corner portion 107s. The first front side deflection member Sa1 extends in a direction orthogonal to the Z axis, and faces the front side coupling portion Ra in the Z direction with the first front side gap Ka1 therebetween. Further, the first front side deflection member Sa1 protrudes outward from the front side connection portion Ra when viewed from the center O of the magnet holder 106. On the −Z side surface of the holder cover 113, the + Z side of the corner 107s is dug down (notched) in the + Z direction. A second front side deflection member Sa2 is provided on the + Z side of the corner portion 107s. The second front side deflection member Sa2 extends in a direction orthogonal to the Z axis, and opposes the front side coupling portion Ra in the Z direction with a second front side gap Ka2 therebetween. Further, the second front side deflection member Sa2 projects outward from the front side connection portion Ra, similarly to the first front side deflection member Sa1.
The surface on the + Z side of the base 112 is dug down (notched) in the −Z direction at the −Z side of the corner 110s. In addition, a first rear deflection member Sb1 is provided on the −Z side of the corner portion 110s. The first rear side deflection member Sb1 extends in a direction orthogonal to the Z axis, and faces the rear side coupling portion Rb in the Z direction across the first rear side gap Kb1. In addition, the first rear side deflection member Sb1 protrudes outward from the rear side connection portion Rb, like the first front side deflection member Sa1. On the −Z side surface of the substrate cover 114, the + Z side of the corner 110s is dug down (notched) in the + Z direction. A second rear side deflection member Sb2 is provided on the + Z side of the corner portion 110s. The second rear side deflection member Sb2 extends in a direction orthogonal to the Z axis, and faces the rear side coupling portion Rb in the Z direction across the second rear side gap Kb2. Further, the second rear side deflection member Sb2 projects outward from the rear side connection portion Rb, similarly to the first front side deflection member Sa1.

手振れ補正機能付レンズ駆動装置１００は、落下等によって衝撃力が加わると、フォーカスユニット１０１と手振れ補正ユニット１０２との相対位置がずれる。しかしながら、前側のバネ部材１０７Ａの隅部１０７ｓが−Ｚ方向に撓んだときに、隅部１０７ｓの撓み量は第一の前側制撓部材Ｓａ１によって制限（抑制）される。また、前側のバネ部材１０７Ａの隅部１０７ｓが＋Ｚ方向に撓んだときに、隅部１０７ｓの撓み量は第二の前側制撓部材Ｓａ２によって制限（抑制）される。その結果、隅部１０７ｓの＋Ｚ方向及び−Ｚ方向への過剰な撓みが防止される。   In the lens driving device 100 with a camera shake correction function, when an impact force is applied due to dropping or the like, the relative positions of the focus unit 101 and the camera shake correction unit 102 are shifted. However, when the corner 107s of the front spring member 107A is bent in the -Z direction, the amount of bending of the corner 107s is limited (suppressed) by the first front deflection member Sa1. Further, when the corner portion 107s of the front spring member 107A is bent in the + Z direction, the bending amount of the corner portion 107s is limited (suppressed) by the second front-side bending member Sa2. As a result, excessive bending of the corner portion 107s in the + Z direction and the −Z direction is prevented.

配線基板１１０の隅部１１０ｓが−Ｚ方向に撓んだときに、隅部１１０ｓの撓み量は第一の後側制撓部材Ｓｂ１によって制限される。また、配線基板１１０の隅部１１０ｓが＋Ｚ方向に撓んだときに、隅部１１０ｓの撓み量は第二の後側制撓部材Ｓｂ２によって制限（抑制）される。その結果、隅部１１０ｓの＋Ｚ方向及び−Ｚ方向への過剰な撓みが効果的に防止される。
前側のバネ部材１０７Ａの隅部１０７ｓと配線基板１１０の隅部１１０ｓとが適正に撓むことによって、バネ部材１１１に伝播される衝撃が緩和されて、バネ部材１１１の破断や座屈を防ぐことができる。これにより、前側のバネ部材１０７Ａの隅部１０７ｓ、配線基板１１０の隅部１１０ｓ及びバネ部材１１１の変形を防ぐことができ、マグネットホルダー１０６を正確な姿勢で支持することが可能となるため、撮影画像が歪曲することがない。よって、手振れ補正ユニット１０２は、フォーカスユニット１０１をＸ軸方向及びＹ軸方向へ正確に揺動させ、適切な手振れ補正を行うことが可能となる。 When the corner portion 110s of the wiring board 110 is bent in the −Z direction, the amount of bending of the corner portion 110s is limited by the first rear side deflection member Sb1. Further, when the corner portion 110s of the wiring board 110 is bent in the + Z direction, the bending amount of the corner portion 110s is limited (suppressed) by the second rear side deflection member Sb2. As a result, excessive bending of the corner portion 110s in the + Z direction and the −Z direction is effectively prevented.
By appropriately bending the corner portion 107s of the front spring member 107A and the corner portion 110s of the wiring board 110, the impact transmitted to the spring member 111 is alleviated to prevent the spring member 111 from being broken or buckled. Can do. Accordingly, the corner 107s of the front spring member 107A, the corner 110s of the wiring board 110, and the spring member 111 can be prevented from being deformed, and the magnet holder 106 can be supported in an accurate posture. The image will not be distorted. Therefore, the camera shake correction unit 102 can swing the focus unit 101 accurately in the X-axis direction and the Y-axis direction and perform appropriate camera shake correction.

図４（ａ）は、実施形態２に係る手振れ補正機能付レンズ駆動装置１００の要部を示す分解斜視図であり、図２（ｂ）は、実施形態２に係る手振れ補正機能付レンズ駆動装置１００要部断面図である。本実施形態の手振れ補正機能付レンズ駆動装置１００は、緩衝部材１１５が装着されている点で図１に示した手振れ補正機能付レンズ駆動装置１００と異なる。   4A is an exploded perspective view illustrating a main part of the lens driving device 100 with a camera shake correction function according to the second embodiment, and FIG. 2B is a lens driving device with a camera shake correction function according to the second embodiment. It is 100 principal part sectional drawing. The lens driving device 100 with a camera shake correction function of the present embodiment is different from the lens driving device 100 with a camera shake correction function shown in FIG. 1 in that a buffer member 115 is attached.

手振れ補正機能付レンズ駆動装置１００は、図１に示したものと同様に、フォーカスユニット１０１と手振れ補正ユニット１０２とにより構成されている。   The lens driving device 100 with a camera shake correction function includes a focus unit 101 and a camera shake correction unit 102 as in the case shown in FIG.

フォーカスユニット１０１は、レンズホルダー１０３と、フォーカスコイル１０４と、マグネット１０５と、マグネットホルダー１０６と、板状のバネ部材１０７と、緩衝部材１１５とを備える。手振れ補正ユニット１０２は、揺動用コイル１０８と、配線基板１１０と、線状のバネ部材１１１と、基台１１２と、緩衝部材１１５とを備える。   The focus unit 101 includes a lens holder 103, a focus coil 104, a magnet 105, a magnet holder 106, a plate-like spring member 107, and a buffer member 115. The camera shake correction unit 102 includes a swinging coil 108, a wiring board 110, a linear spring member 111, a base 112, and a buffer member 115.

図４（ａ）に示すように、バネ部材１１１は、Ｚ軸方向に延在し、線状をなすバネであって、本実施形態において４本設けられる。バネ部材１１１の前側端部１１１ａは、前側のバネ部材１０７Ａの隅部１０７ｓに設けられた前側連結部Ｒａと連結される。そしてこのとき、前側のバネ部材１０７Ａは、前側の可撓部材として機能する。
バネ部材１１１の後側端部１１１ｂは、配線基板１１０の隅部１１０ｓに設けられた後側連結部Ｒｂと連結され、フォーカスユニット１０１をＸ軸方向及びＹ軸方向へ揺動可能に支持する。そしてこのとき、配線基板１１０は、後側の可撓部材として機能する。 As shown in FIG. 4A, the spring members 111 are linear springs that extend in the Z-axis direction and are provided in the present embodiment. The front end portion 111a of the spring member 111 is connected to a front connection portion Ra provided at a corner portion 107s of the front spring member 107A. At this time, the front spring member 107A functions as a front flexible member.
The rear end 111b of the spring member 111 is connected to a rear connecting portion Rb provided at the corner 110s of the wiring board 110, and supports the focus unit 101 so as to be swingable in the X axis direction and the Y axis direction. At this time, the wiring board 110 functions as a rear flexible member.

図４（ｂ）に示すように、マグネットホルダー１０６の＋Ｚ側の面には、隅部１０７ｓの−Ｚ側が−Ｚ方向に掘り下げられた（切り欠かれた）第一の前側制撓部材Ｓａ１が設けられる。第一の前側制撓部材Ｓａ１は、Ｚ軸と直交する方向に延在して、第一の前側空隙Ｋａ１を隔てて前側連結部ＲａとＺ方向に対向する。また、第一の前側制撓部材Ｓａ１は、マグネットホルダー１０６の中心Ｏから見て、前側連結部Ｒａよりも外側に突き出している。前側のバネ部材１０７Ａの隅部１０７ｓと第一の前側制撓部材Ｓａ１との間に形成された第一の前側空隙Ｋａ１には、緩衝部材１１５が挿入され、隅部１０７ｓと第一の前側制撓部材Ｓａ１とに固着される。   As shown in FIG. 4B, on the + Z side surface of the magnet holder 106, the first front side deflection member Sa1 in which the −Z side of the corner 107s is dug down (notched) in the −Z direction is provided. Provided. The first front side deflection member Sa1 extends in a direction orthogonal to the Z axis, and faces the front side coupling portion Ra in the Z direction with the first front side gap Ka1 therebetween. Further, the first front side deflection member Sa1 protrudes outward from the front side connection portion Ra when viewed from the center O of the magnet holder 106. A buffer member 115 is inserted into the first front gap Ka1 formed between the corner 107s of the front spring member 107A and the first front deflection member Sa1, and the corner 107s and the first front damping are inserted. It is fixed to the flexible member Sa1.

基台１１２の＋Ｚ側の面には、隅部１１０ｓの−Ｚ側が−Ｚ方向に掘り下げられた（切り欠かれた）第一の後側制撓部材Ｓｂ１が設けられる。第一の後側制撓部材Ｓｂ１は、Ｚ軸と直交する方向に延在して、第一の後側空隙Ｋｂ１を隔てて後側連結部ＲｂとＺ方向に対向する。また、第一の後側制撓部材Ｓｂ１は、第一の前側制撓部材Ｓａ１と同様に、後側連結部Ｒｂよりも外側に突き出している。配線基板１１０の隅部１１０ｓと第一の後側制撓部材Ｓｂ１との間に形成された第一の後側空隙Ｋｂ１には、緩衝部材１１５が挿入され、隅部１１０ｓと第一の後側制撓部材Ｓｂ１とに固着される。   On the surface of the base 112 on the + Z side, a first rear side deflection member Sb1 in which the −Z side of the corner 110s is dug down (notched) is provided. The first rear side deflection member Sb1 extends in a direction orthogonal to the Z axis, and faces the rear side coupling portion Rb in the Z direction across the first rear side gap Kb1. In addition, the first rear side deflection member Sb1 protrudes outward from the rear side connection portion Rb, like the first front side deflection member Sa1. A buffer member 115 is inserted into the first rear gap Kb1 formed between the corner 110s of the wiring board 110 and the first rear deflection member Sb1, and the corner 110s and the first rear side are separated. Affixed to the damping member Sb1.

手振れ補正機能付レンズ駆動装置１００は、落下等によって衝撃力が加わると、フォーカスユニット１０１と手振れ補正ユニット１０２との相対位置がずれる。しかしながら、前側のバネ部材１０７Ａの隅部１０７ｓが−Ｚ方向に撓んだときに、隅部１０７ｓの撓み量は第一の前側制撓部材Ｓａ１によって制限される。また、緩衝部材１１５によって様々な方向の衝撃力が吸収される。その結果、隅部１０７ｓに加わる衝撃力が緩和されて＋Ｚ方向及び−Ｚ方向への過剰な撓みが効果的に防止される。   In the lens driving device 100 with a camera shake correction function, when an impact force is applied due to dropping or the like, the relative positions of the focus unit 101 and the camera shake correction unit 102 are shifted. However, when the corner 107s of the front spring member 107A is bent in the -Z direction, the amount of bending of the corner 107s is limited by the first front deflection member Sa1. Further, the shock force in various directions is absorbed by the buffer member 115. As a result, the impact force applied to the corner 107s is relaxed, and excessive bending in the + Z direction and the -Z direction is effectively prevented.

配線基板１１０の隅部１１０ｓが−Ｚ方向に撓んだときに、隅部１１０ｓの撓み量は第一の後側制撓部材Ｓｂ１によって制限される。また、緩衝部材１１５によって様々な方向の衝撃力が吸収される。その結果、隅部１１０ｓに加わる衝撃力が緩和されて＋Ｚ方向及び−Ｚ方向への過剰な撓みが効果的に防止される。
このように、前側のバネ部材１０７Ａの隅部１０７ｓと配線基板１１０の隅部１１０ｓとが適正に撓み、緩衝部材１１５による衝撃力が緩和されることによって、バネ部材１１１に伝播される衝撃がさらに弱まり、バネ部材１１１の破断や座屈を効果的に防ぐことができる。これにより、前側のバネ部材１０７Ａの隅部１０７ｓ、配線基板１１０の隅部１１０ｓ及びバネ部材１１１の変形を防ぐことができ、マグネットホルダー１０６を正確な姿勢で安定的に支持することが可能となるため、撮影画像が歪曲することがない。よって、手振れ補正ユニット１０２は、フォーカスユニット１０１をＸ軸方向及びＹ軸方向へ正確に揺動させ、適切な手振れ補正を行うことが可能となる。 When the corner portion 110s of the wiring board 110 is bent in the −Z direction, the amount of bending of the corner portion 110s is limited by the first rear side deflection member Sb1. Further, the shock force in various directions is absorbed by the buffer member 115. As a result, the impact force applied to the corner 110s is relaxed, and excessive bending in the + Z direction and the -Z direction is effectively prevented.
As described above, the corner portion 107s of the front spring member 107A and the corner portion 110s of the wiring board 110 are appropriately bent, and the impact force caused by the buffer member 115 is alleviated. The spring member 111 is weakened, and breakage and buckling of the spring member 111 can be effectively prevented. Thereby, it is possible to prevent the corner portion 107s of the front spring member 107A, the corner portion 110s of the wiring board 110, and the spring member 111 from being deformed, and the magnet holder 106 can be stably supported in an accurate posture. Therefore, the captured image is not distorted. Therefore, the camera shake correction unit 102 can swing the focus unit 101 accurately in the X-axis direction and the Y-axis direction and perform appropriate camera shake correction.

以上、本発明を実施の形態を用いて説明したが、本発明の技術的範囲は前記実施の形態に記載の範囲には限定されない。前記実施の形態に、多様な変更または改良を加えることが可能であることが当業者にも明らかである。そのような変更または改良を加えた形態も本発明の技術的範囲に含まれ得ることが、特許請求の範囲から明らかである。   As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the embodiment. It is apparent from the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

例えば、実施形態１に係る手振れ補正機能付レンズ駆動装置１００に対し、変形例に示したホルダーカバー１１３と基板カバー１１４とを取付け、かつ、実施形態２において説明したように、緩衝部材１１５を前側のバネ部材１０７Ａの隅部１０７ｓと第二の前側制撓部材Ｓａ２との間に形成された第二の前側空隙Ｋａ２に追加で挿入し、緩衝部材１１５を配線基板１１０の隅部１１０ｓと第二の後側制撓部材Ｓｂ２との間に形成された第二の後側空隙Ｋｂ２に追加で挿入した手振れ補正機能付レンズ駆動装置１００とすることも可能である。   For example, the holder cover 113 and the substrate cover 114 shown in the modified example are attached to the lens driving device with camera shake correction function 100 according to the first embodiment, and the buffer member 115 is disposed on the front side as described in the second embodiment. The spring member 107A is inserted into a second front gap Ka2 formed between the corner 107s of the spring member 107A and the second front deflection member Sa2, and the buffer member 115 is connected to the corner 110s of the wiring board 110 and the second front gap Ka2. It is also possible to provide the lens driving device 100 with a camera shake correction function that is additionally inserted into the second rear gap Kb2 formed between the rear deflection member Sb2.

１００ 手振れ補正機能付レンズ駆動装置、１０１ フォーカスユニット、
１０２ 手振れ補正ユニット、１０３ レンズホルダー、１０４ フォーカスコイル、
１０５ マグネット、１０６ マグネットホルダー、１０７ バネ部材、
１０８ 揺動用コイル、１１０ 配線基板、１１１ バネ部材、１１２ 基台、
１１３ ホルダーカバー、１１４ 基板カバー、１１５ 緩衝部材、
Ｓａ１ 第一の前側制撓部材、Ｓａ２ 第二の前側制撓部材、
Ｓｂ１ 第一の後側制撓部材、Ｓｂ２ 第二の後側制撓部材。 100 Lens driving device with camera shake correction function, 101 Focus unit,
102 image stabilization unit, 103 lens holder, 104 focus coil,
105 magnet, 106 magnet holder, 107 spring member,
108 swing coil, 110 wiring board, 111 spring member, 112 base,
113 Holder cover, 114 Substrate cover, 115 Buffer member,
Sa1 first front side deflection member, Sa2 second front side deflection member,
Sb1 first rear side deflection member, Sb2 second rear side deflection member.

Claims (2)

被写体方向をレンズの光軸方向前方として、
前記レンズを保持するレンズホルダーを光軸方向に移動させるフォーカスユニットと、
前記フォーカスユニットを光軸方向と直交する方向に揺動させる手振れ補正ユニットと、
前記光軸方向に延在し、前記フォーカスユニットと前記手振れ補正ユニットとを連結するバネ部材と、
を備えた手振れ補正機能付レンズ駆動装置であって、
前記バネ部材の端部と連結される可撓部材と、
前記可撓部材の光軸方向前方及び光軸方向後方の少なくともいずれか一方に設けられ、光軸と直交する方向に延在して前記バネ部材の端部と可撓部材との連結箇所よりも外側に突き出し、前記可撓部材と空隙を隔てて光軸方向に対向する制撓部材と、
を備えたことを特徴とする手振れ補正機能付レンズ駆動装置。 With the subject direction as the front in the optical axis direction of the lens,
A focus unit that moves a lens holder that holds the lens in the optical axis direction;
A camera shake correction unit that swings the focus unit in a direction perpendicular to the optical axis direction;
A spring member extending in the optical axis direction and connecting the focus unit and the camera shake correction unit;
A lens driving device with a camera shake correction function,
A flexible member connected to an end of the spring member;
The flexible member is provided at least one of the front and rear of the optical axis in the optical axis direction, and extends in a direction orthogonal to the optical axis, so that the end of the spring member is connected to the flexible member. A deflection member that protrudes outward and faces the flexible member in the direction of the optical axis across a gap;
A lens driving device with a camera shake correction function. 前記可撓部材と制撓部材との間には、緩衝部材が設けられたことを特徴とする請求項１記載の手振れ補正機能付レンズ駆動装置。   The lens driving device with a camera shake correction function according to claim 1, wherein a buffer member is provided between the flexible member and the deflection member.

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