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JP7597455B2 - Lens drive device and camera module - Google Patents
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JP7597455B2 - Lens drive device and camera module - Google Patents

Lens drive device and camera module Download PDF

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JP7597455B2
JP7597455B2 JP2023526434A JP2023526434A JP7597455B2 JP 7597455 B2 JP7597455 B2 JP 7597455B2 JP 2023526434 A JP2023526434 A JP 2023526434A JP 2023526434 A JP2023526434 A JP 2023526434A JP 7597455 B2 JP7597455 B2 JP 7597455B2
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magnetic
lens holding
fixed
holding member
lens
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JP2023547255A (en
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寛志 長田
征宣 前田
長興 王
インヨン ホ
ガン ワン
ドンフォン リ
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Huawei Technologies Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B5/02—Lateral adjustment of lens
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0053—Driving means for the movement of one or more optical element
    • G03B2205/0076—Driving means for the movement of one or more optical element using shape memory alloys

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)
  • Studio Devices (AREA)

Description

本開示は、レンズ駆動装置に関する。 This disclosure relates to a lens driving device.

従来、八つの形状記憶合金ワイヤを用いたレンズ駆動装置が知られている（特許文献１参照。）。 Conventionally, a lens drive device using eight shape memory alloy wires is known (see Patent Document 1).

国際公開第２０１９／０３４８６０号International Publication No. 2019/034860

このレンズ駆動装置では、形状記憶合金ワイヤが通電していない状態では、形状記憶合金ワイヤが弛んでいたりするため、レンズ保持部材は、不所望に動いてしまうおそれがある。 In this lens drive device, when the shape memory alloy wire is not energized, the shape memory alloy wire becomes loose, and the lens holding member may move undesirably.

そこで、形状記憶合金ワイヤが通電していない状態でのレンズ保持部材の不所望な動きを防止できるレンズ駆動装置を提供することが望まれる。 Therefore, it is desirable to provide a lens driving device that can prevent undesired movement of the lens holding member when the shape memory alloy wire is not energized.

本発明の一実施形態に係るレンズ駆動装置は、ベース部材及びカバー部材を含む固定側部材と、前記ベース部材と前記カバー部材とで形成される収容空間に配置されるとともに、レンズ体を保持可能なレンズ保持部材と、前記固定側部材と前記レンズ保持部材を含む可動側部材との間に配置された複数の形状記憶合金ワイヤと、を備えたレンズ駆動装置であって、前記レンズ保持部材は、前記ベース部材の上側に配置されており、前記形状記憶合金ワイヤへの通電によって、前記ベース部材に対して移動可能であり、前記レンズ保持部材には、複数の異なる位置に複数の第１磁性部材が配置されるとともに、前記ベース部材には、複数の前記第１磁性部材に対応する複数の第２磁性部材が設けられており、複数の前記第１磁性部材のそれぞれが、光軸方向において、対応する前記第２磁性部材に対向し、対応する前記第２磁性部材に引き寄せられ、前記形状記憶合金ワイヤへの非通電時に前記レンズ保持部材の動きが前記ベース部材によって規制されている。
 A lens driving device according to one embodiment of the present invention is a lens driving device comprising: a fixed side member including a base member and a cover member; a lens holding member that is arranged in a storage space formed by the base member and the cover member and is capable of holding a lens body; and a plurality of shape memory alloy wires that are arranged between the fixed side member and a movable side member that includes the lens holding member, wherein the lens holding member is arranged on the upper side of the base member and is movable relative to the base member by passing current through the shape memory alloy wire, a plurality of first magnetic members are arranged at a plurality of different positions on the lens holding member, and a plurality of second magnetic members corresponding to the plurality of first magnetic members are provided on the base member, each of the plurality of first magnetic members faces the corresponding second magnetic member in the optical axis direction and is attracted to the corresponding second magnetic member, and the movement of the lens holding member is restricted by the base member when current is not passed through the shape memory alloy wire.

上述のレンズ駆動装置は、形状記憶合金ワイヤが通電していない状態でのレンズ保持部材の不所望な動きを防止できる。 The lens driving device described above can prevent undesired movement of the lens holding member when the shape memory alloy wire is not energized.

図１Ａ及び図１Ｂはレンズ駆動装置の斜視図である。1A and 1B are perspective views of a lens driving device. 図１Ａ及び図１Ｂはレンズ駆動装置の斜視図である。1A and 1B are perspective views of a lens driving device. レンズ駆動装置の分解斜視図である。FIG. 2 is an exploded perspective view of the lens driving device. 図３Ａ及び図３Ｂはレンズ保持部材及びベース部材のそれぞれに接続される金属部材の斜視図である。3A and 3B are perspective views of metal members connected to the lens holding member and the base member, respectively. 図３Ａ及び図３Ｂはレンズ保持部材及びベース部材のそれぞれに接続される金属部材の斜視図である。3A and 3B are perspective views of metal members connected to the lens holding member and the base member, respectively. 図４Ａ及び図４Ｂは形状記憶合金ワイヤが取り付けられた金属部材の図である。4A and 4B are diagrams of a metal member having a shape memory alloy wire attached thereto. 図４Ａ及び図４Ｂは形状記憶合金ワイヤが取り付けられた金属部材の図である。4A and 4B are diagrams of a metal member having a shape memory alloy wire attached thereto. 図５Ａ～図５Ｃはベース部材の斜視図である。5A to 5C are perspective views of the base member. 図５Ａ～図５Ｃはベース部材の斜視図である。5A to 5C are perspective views of the base member. 図５Ａ～図５Ｃはベース部材の斜視図である。5A to 5C are perspective views of the base member. 図６Ａ及び図６Ｂは板ばね、形状記憶合金ワイヤ、金属部材、及び導電部材の位置関係を示す図である。6A and 6B are diagrams showing the positional relationship between the leaf spring, the shape memory alloy wire, the metal member, and the conductive member. 図６Ａ及び図６Ｂは板ばね、形状記憶合金ワイヤ、金属部材、及び導電部材の位置関係を示す図である。6A and 6B are diagrams showing the positional relationship between the leaf spring, the shape memory alloy wire, the metal member, and the conductive member. 図７Ａ及び図７Ｂは形状記憶合金ワイヤを流れる電流の経路の一例を示す図である。7A and 7B are diagrams showing an example of a path of a current flowing through a shape memory alloy wire. 図７Ａ及び図７Ｂは形状記憶合金ワイヤを流れる電流の経路の一例を示す図である。7A and 7B are diagrams showing an example of a path of a current flowing through a shape memory alloy wire. 図８Ａ及び図８Ｂは固定側金属部材と導電部材とを接続する接続構造の一例を示す図である。8A and 8B are diagrams showing an example of a connection structure for connecting a fixed metal member and a conductive member. 図８Ａ及び図８Ｂは固定側金属部材と導電部材とを接続する接続構造の一例を示す図である。8A and 8B are diagrams showing an example of a connection structure for connecting a fixed metal member and a conductive member. 図９Ａ及び図９Ｂは固定側金属部材と導電部材とを接続する接続構造の一例を示す図である。9A and 9B are diagrams showing an example of a connection structure for connecting a fixed metal member and a conductive member. 図９Ａ及び図９Ｂは固定側金属部材と導電部材とを接続する接続構造の一例を示す図である。9A and 9B are diagrams showing an example of a connection structure for connecting a fixed metal member and a conductive member. レンズ保持部材、上側カバー部材、及びベース部材の斜視図である。2 is a perspective view of a lens holding member, an upper cover member, and a base member. FIG. 図１１Ａ～図１１Ｃはレンズ保持部材の詳細図である。11A to 11C are detailed views of the lens holding member. 図１１Ａ～図１１Ｃはレンズ保持部材の詳細図である。11A to 11C are detailed views of the lens holding member. 図１１Ａ～図１１Ｃはレンズ保持部材の詳細図である。11A to 11C are detailed views of the lens holding member. 図１２Ａ及び図１２Ｂは導電部材の斜視図及び上面図である。12A and 12B are a perspective view and a top view of a conductive member. 図１２Ａ及び図１２Ｂは導電部材の斜視図及び上面図である。12A and 12B are a perspective view and a top view of a conductive member. 図１３Ａ及び図１３Ｂは第１磁性部材が取り付けられたレンズ保持部材とベース部材の上面図である。13A and 13B are top views of the lens holding member and the base member to which the first magnetic member is attached. 図１３Ａ及び図１３Ｂは第１磁性部材が取り付けられたレンズ保持部材とベース部材の上面図である。13A and 13B are top views of the lens holding member and the base member to which the first magnetic member is attached. 図１４Ａ及び図１４Ｂはレンズ保持部材、第１磁性部材、ベース部材、及び第２磁性部材の断面図である。14A and 14B are cross-sectional views of the lens holding member, the first magnetic member, the base member, and the second magnetic member. 図１４Ａ及び図１４Ｂはレンズ保持部材、第１磁性部材、ベース部材、及び第２磁性部材の断面図である。14A and 14B are cross-sectional views of the lens holding member, the first magnetic member, the base member, and the second magnetic member.

以下、本発明の実施形態に係るレンズ駆動装置１０１について図面を参照して説明する。図１Ａ及び図１Ｂは、レンズ駆動装置１０１の斜視図である。具体的には、図１Ａは、レンズ駆動装置１０１の上方斜視図であり、図１Ｂは、レンズ駆動装置１０１の下方斜視図である。図２は、レンズ駆動装置１０１の分解斜視図である。 The lens driving device 101 according to an embodiment of the present invention will be described below with reference to the drawings. Figs. 1A and 1B are perspective views of the lens driving device 101. Specifically, Fig. 1A is an upper perspective view of the lens driving device 101, and Fig. 1B is a lower perspective view of the lens driving device 101. Fig. 2 is an exploded perspective view of the lens driving device 101.

図１Ａ、図１Ｂ及び図２において、Ｘ１は、三次元直交座標系を構成するＸ軸の一方向を表し、Ｘ２は、Ｘ軸の他方向を表す。また、Ｙ１は、三次元直交座標系を構成するＹ軸の一方向を表し、Ｙ２は、Ｙ軸の他方向を表す。同様に、Ｚ１は、三次元直交座標系を構成するＺ軸の一方向を表し、Ｚ２は、Ｚ軸の他方向を表す。図１Ａ、図１Ｂ及び図２では、レンズ駆動装置１０１のＸ１側は、レンズ駆動装置１０１の前側（正面側）に相当し、レンズ駆動装置１０１のＸ２側は、レンズ駆動装置１０１の後側（背面側）に相当する。また、レンズ駆動装置１０１のＹ１側は、レンズ駆動装置１０１の右側に相当し、レンズ駆動装置１０１のＹ２側は、レンズ駆動装置１０１の左側に相当する。また、レンズ駆動装置１０１のＺ１側は、レンズ駆動装置１０１の上側（被写体側）に相当し、レンズ駆動装置１０１のＺ２側は、レンズ駆動装置１０１の下側（撮像素子側）に相当する。他の図においても同様である。 1A, 1B and 2, X1 represents one direction of the X axis constituting the three-dimensional orthogonal coordinate system, and X2 represents the other direction of the X axis. Y1 represents one direction of the Y axis constituting the three-dimensional orthogonal coordinate system, and Y2 represents the other direction of the Y axis. Similarly, Z1 represents one direction of the Z axis constituting the three-dimensional orthogonal coordinate system, and Z2 represents the other direction of the Z axis. In Figs. 1A, 1B and 2, the X1 side of the lens driving device 101 corresponds to the front side (front side) of the lens driving device 101, and the X2 side of the lens driving device 101 corresponds to the rear side (rear side) of the lens driving device 101. The Y1 side of the lens driving device 101 corresponds to the right side of the lens driving device 101, and the Y2 side of the lens driving device 101 corresponds to the left side of the lens driving device 101. Additionally, the Z1 side of the lens driving device 101 corresponds to the upper side (subject side) of the lens driving device 101, and the Z2 side of the lens driving device 101 corresponds to the lower side (image sensor side) of the lens driving device 101. This is the same in the other figures.

レンズ駆動装置１０１は、図１Ａ、図１Ｂ及び図２に示すように、固定側部材ＲＧの一部であるカバー部材４を含む。カバー部材４は、上側カバー部材４Ｕ及び下側カバー部材４Ｌを含む。 As shown in Figures 1A, 1B, and 2, the lens driving device 101 includes a cover member 4 that is part of the fixed side member RG. The cover member 4 includes an upper cover member 4U and a lower cover member 4L.

カバー部材４は、各部材を覆う筐体として機能するように構成されている。本実施形態では、カバー部材４は、非磁性金属で形成されている。但し、カバー部材４は、磁性金属で形成されていてもよい。また、カバー部材４は、図１Ａ及び図１Ｂに示すように、収納部４ｓを定める箱状の外形を有する。 The cover member 4 is configured to function as a housing that covers each component. In this embodiment, the cover member 4 is made of a non-magnetic metal. However, the cover member 4 may also be made of a magnetic metal. In addition, as shown in Figures 1A and 1B, the cover member 4 has a box-shaped outer shape that defines the storage section 4s.

上側カバー部材４Ｕは、矩形筒状の第１外周壁部４Ａと、第１外周壁部４Ａの上端（Ｚ１側の端）と連続するように設けられた矩形環状且つ平板状の天板部４Ｂと、を有する。天板部４Ｂの中央には、円形の開口４ｋが形成されている。第１外周壁部４Ａは、第１側板部４Ａ１～第４側板部４Ａ４を含む。第１側板部４Ａ１と第３側板部４Ａ３とは互いに対向し、第２側板部４Ａ２と第４側板部４Ａ４とは互いに対向している。そして、第１側板部４Ａ１及び第３側板部４Ａ３は、第２側板部４Ａ２及び第４側板部４Ａ４に対して垂直に延びている。 The upper cover member 4U has a rectangular cylindrical first outer peripheral wall portion 4A and a rectangular annular flat top plate portion 4B that is continuous with the upper end (the end on the Z1 side) of the first outer peripheral wall portion 4A. A circular opening 4k is formed in the center of the top plate portion 4B. The first outer peripheral wall portion 4A includes a first side plate portion 4A1 to a fourth side plate portion 4A4. The first side plate portion 4A1 and the third side plate portion 4A3 face each other, and the second side plate portion 4A2 and the fourth side plate portion 4A4 face each other. The first side plate portion 4A1 and the third side plate portion 4A3 extend perpendicular to the second side plate portion 4A2 and the fourth side plate portion 4A4.

同様に、下側カバー部材４Ｌは、矩形筒状の第２外周壁部４Ｃと、第２外周壁部４Ｃの下端（Ｚ２側の端）と連続するように設けられた矩形環状且つ平板状の底板部４Ｄと、を有する。底板部４Ｄの中央には、円形の開口４ｍが形成されている。第２外周壁部４Ｃは、第１側板部４Ｃ１～第４側板部４Ｃ４を含む。第１側板部４Ｃ１と第３側板部４Ｃ３とは互いに対向し、第２側板部４Ｃ２と第４側板部４Ｃ４とは互いに対向している。そして、第１側板部４Ｃ１及び第３側板部４Ｃ３は、第２側板部４Ｃ２及び第４側板部４Ｃ４に対して垂直に延びている。 Similarly, the lower cover member 4L has a rectangular cylindrical second outer peripheral wall portion 4C and a rectangular annular flat bottom plate portion 4D that is continuous with the lower end (the end on the Z2 side) of the second outer peripheral wall portion 4C. A circular opening 4m is formed in the center of the bottom plate portion 4D. The second outer peripheral wall portion 4C includes a first side plate portion 4C1 to a fourth side plate portion 4C4. The first side plate portion 4C1 and the third side plate portion 4C3 face each other, and the second side plate portion 4C2 and the fourth side plate portion 4C4 face each other. The first side plate portion 4C1 and the third side plate portion 4C3 extend perpendicular to the second side plate portion 4C2 and the fourth side plate portion 4C4.

上側カバー部材４Ｕは、図１Ａ及び図１Ｂに示すように、接着剤によって下側カバー部材４Ｌに接合されている。第２外周壁部４Ｃは、第１外周壁部４Ａを部分的に覆うように配置される。 As shown in Figures 1A and 1B, the upper cover member 4U is joined to the lower cover member 4L by adhesive. The second outer peripheral wall portion 4C is positioned so as to partially cover the first outer peripheral wall portion 4A.

カバー部材４内には、図２に示すように、スペーサ部材１、レンズ保持部材２、金属部材５、板ばね６、ベース部材１８、及び形状記憶合金ワイヤＳＡ等が収容されている。 As shown in FIG. 2, the cover member 4 contains a spacer member 1, a lens holding member 2, a metal member 5, a leaf spring 6, a base member 18, and a shape memory alloy wire SA.

可動側部材ＭＢは、レンズ体（図示せず。）を保持可能なレンズ保持部材２と、レンズ体に関する光軸ＪＤに沿ってレンズ保持部材２を移動させる駆動機構ＭＫとしての形状記憶合金ワイヤＳＡと、レンズ保持部材２を光軸ＪＤに沿って移動可能に支持する板ばね６と、を含む。レンズ体は、例えば、少なくとも１枚のレンズを備えた筒状のレンズバレルであり、その中心軸線が光軸ＪＤに沿うように構成されている。 The movable side member MB includes a lens holding member 2 capable of holding a lens body (not shown), a shape memory alloy wire SA as a drive mechanism MK that moves the lens holding member 2 along the optical axis JD related to the lens body, and a leaf spring 6 that supports the lens holding member 2 movably along the optical axis JD. The lens body is, for example, a cylindrical lens barrel equipped with at least one lens, and is configured so that its central axis is aligned with the optical axis JD.

スペーサ部材１は、レンズ保持部材２がＺ１方向に移動したときに合成樹脂で形成されたレンズ保持部材２と金属で形成されたカバー部材４とが衝突するのを防止できるように配置されている。すなわち、スペーサ部材１は、合成樹脂で形成され、レンズ保持部材２とカバー部材４の天板部４Ｂとの間に空間を形成できるように配置されている。そして、スペーサ部材１は、接着剤によって上側カバー部材４Ｕに固定されている。具体的には、スペーサ部材１とレンズ保持部材２とは、レンズ保持部材２のＺ１方向（上方）への過度の動きを制限するストッパ部を構成している。本実施形態では、レンズ保持部材２は、所定距離だけＺ１方向へ移動したときにスペーサ部材１と接触するように構成されている。この構成により、スペーサ部材１は、合成樹脂で形成されたレンズ保持部材２と金属で形成された上側カバー部材４Ｕとが接触するのを防止し、そのような接触によるレンズ保持部材２の摩耗を防止できる。但し、別の構造等によってレンズ保持部材２と上側カバー部材４Ｕの天板部４Ｂとの間に空間を形成できるのであれば、スペーサ部材１は省略されてもよい。 The spacer member 1 is arranged so as to prevent the lens holding member 2 made of synthetic resin from colliding with the cover member 4 made of metal when the lens holding member 2 moves in the Z1 direction. That is, the spacer member 1 is made of synthetic resin and arranged so as to form a space between the lens holding member 2 and the top plate portion 4B of the cover member 4. The spacer member 1 is fixed to the upper cover member 4U by adhesive. Specifically, the spacer member 1 and the lens holding member 2 form a stopper portion that limits excessive movement of the lens holding member 2 in the Z1 direction (upward). In this embodiment, the lens holding member 2 is configured to come into contact with the spacer member 1 when it moves in the Z1 direction by a predetermined distance. With this configuration, the spacer member 1 prevents the lens holding member 2 made of synthetic resin from coming into contact with the upper cover member 4U made of metal, and prevents wear of the lens holding member 2 due to such contact. However, if a space can be formed between the lens holding member 2 and the top plate portion 4B of the upper cover member 4U by another structure or the like, the spacer member 1 may be omitted.

レンズ保持部材２は、液晶ポリマー（ＬＣＰ）等の合成樹脂を射出成形することで形成されている。具体的には、レンズ保持部材２は、図２に示すように、光軸ＪＤに沿って延びるように形成された筒状部１２と、筒状部１２から径方向外側に突出するように形成された可動側台座部２Ｄ及び突設部２Ｓと、を含む。本実施形態では、筒状部１２の内周面には、レンズ体が螺着されるようにねじ溝が形成されている。レンズ体は、筒状部１２の内周面に接着剤で固定されるように構成されていてもよい。この場合、筒状部１２の内周面には、ねじ溝が形成されていなくてもよい。 The lens holding member 2 is formed by injection molding a synthetic resin such as liquid crystal polymer (LCP). Specifically, as shown in FIG. 2, the lens holding member 2 includes a cylindrical portion 12 formed to extend along the optical axis JD, and a movable side base portion 2D and a protruding portion 2S formed to protrude radially outward from the cylindrical portion 12. In this embodiment, a thread groove is formed on the inner peripheral surface of the cylindrical portion 12 so that the lens body can be screwed. The lens body may be configured to be fixed to the inner peripheral surface of the cylindrical portion 12 with an adhesive. In this case, the inner peripheral surface of the cylindrical portion 12 does not need to have a thread groove formed thereon.

可動側台座部２Ｄは、第１可動側台座部２Ｄ１及び第２可動側台座部２Ｄ２を含む。第１可動側台座部２Ｄ１及び第２可動側台座部２Ｄ２は、光軸ＪＤを挟んで互いに反対方向に延びるように配置されている。同様に、突設部２Ｓは、第１突設部２Ｓ１及び第２突設部２Ｓ２を含む。第１突設部２Ｓ１及び第２突設部２Ｓ２は、光軸ＪＤを挟んで互いに反対方向に延びるように配置されている。具体的には、可動側台座部２Ｄ及び突設部２Ｓは、上面視で略矩形状の外形を有するレンズ保持部材２の四つの角部に対応するように配置され、且つ、交互に並ぶように配置されている。そして、二つの可動側台座部２Ｄのそれぞれには、板ばね６の一部が載置される。 The movable side base portion 2D includes a first movable side base portion 2D1 and a second movable side base portion 2D2. The first movable side base portion 2D1 and the second movable side base portion 2D2 are arranged to extend in opposite directions with the optical axis JD in between. Similarly, the protruding portion 2S includes a first protruding portion 2S1 and a second protruding portion 2S2. The first protruding portion 2S1 and the second protruding portion 2S2 are arranged to extend in opposite directions with the optical axis JD in between. Specifically, the movable side base portion 2D and the protruding portion 2S are arranged to correspond to the four corners of the lens holding member 2, which has a substantially rectangular outer shape in a top view, and are arranged alternately. A part of the leaf spring 6 is placed on each of the two movable side base portions 2D.

駆動機構ＭＫは、形状記憶アクチュエータの一例である形状記憶合金ワイヤＳＡを含む。本実施形態では、形状記憶合金ワイヤＳＡは、第１ワイヤＳＡ１～第８ワイヤＳＡ８を含む。形状記憶合金ワイヤＳＡは、電流が流れると温度が上昇し、その温度の上昇に応じて収縮する。駆動機構ＭＫは、形状記憶合金ワイヤＳＡの収縮を利用してレンズ保持部材２を光軸ＪＤに沿って上下に移動させることができる。なお、形状記憶合金ワイヤＳＡは、第１ワイヤＳＡ１～第８ワイヤＳＡ８のうちの一つ又は複数が収縮するとレンズ保持部材２が移動し、その移動によって別の一つ又は複数が引き延ばされるように構成されている。 The driving mechanism MK includes a shape memory alloy wire SA, which is an example of a shape memory actuator. In this embodiment, the shape memory alloy wire SA includes a first wire SA1 to an eighth wire SA8. When a current flows through the shape memory alloy wire SA, the temperature increases and the wire contracts in response to the increase in temperature. The driving mechanism MK can use the contraction of the shape memory alloy wire SA to move the lens holding member 2 up and down along the optical axis JD. The shape memory alloy wire SA is configured such that when one or more of the first wire SA1 to the eighth wire SA8 contract, the lens holding member 2 moves, and the other one or more wires are stretched due to the movement.

板ばね６は、固定側部材ＲＧ（ベース部材１８）に対してレンズ保持部材２を光軸ＪＤに平行な方向に移動可能に支持できるように構成されている。本実施形態では、板ばね６は、例えば、銅合金、チタン銅系合金（チタン銅）、又は銅ニッケル合金（ニッケルすず銅）等を主な材料とした金属板から作製されている。具体的には、板ばね６は、第１板ばね６Ａ及び第２板ばね６Ｂを含む。 The leaf spring 6 is configured to support the lens holding member 2 movably in a direction parallel to the optical axis JD relative to the fixed side member RG (base member 18). In this embodiment, the leaf spring 6 is made from a metal plate whose main material is, for example, a copper alloy, a titanium-copper alloy (titanium-copper), or a copper-nickel alloy (nickel-tin-copper). Specifically, the leaf spring 6 includes a first leaf spring 6A and a second leaf spring 6B.

ベース部材１８は、液晶ポリマー（ＬＣＰ）等の合成樹脂を用いた射出成形によって形成される。本実施形態では、ベース部材１８は、図５Ａに示すように、上面視で略矩形状の輪郭を有し、中央に開口１８Ｋを有する。具体的には、ベース部材１８は、開口１８Ｋを囲むように配置される四つの辺部１８Ｅ（第１辺部１８Ｅ１～第４辺部１８Ｅ４）を有する。 The base member 18 is formed by injection molding using a synthetic resin such as liquid crystal polymer (LCP). In this embodiment, the base member 18 has a generally rectangular outline in top view, as shown in FIG. 5A, and has an opening 18K in the center. Specifically, the base member 18 has four sides 18E (first side 18E1 to fourth side 18E4) that are arranged to surround the opening 18K.

板ばね６は、レンズ保持部材２に形成された可動側台座部２Ｄと、ベース部材１８に形成された固定側台座部１８Ｄとを繋ぐように構成されている。なお、固定側台座部１８Ｄは、第１固定側台座部１８Ｄ１及び第２固定側台座部１８Ｄ２を含む。 The leaf spring 6 is configured to connect the movable side base portion 2D formed on the lens holding member 2 and the fixed side base portion 18D formed on the base member 18. The fixed side base portion 18D includes a first fixed side base portion 18D1 and a second fixed side base portion 18D2.

より具体的には、第１板ばね６Ａは、レンズ保持部材２に形成された第１可動側台座部２Ｄ１と、ベース部材１８に形成された第１固定側台座部１８Ｄ１及び第２固定側台座部１８Ｄ２のそれぞれとを繋ぐように構成されている。同様に、第２板ばね６Ｂは、レンズ保持部材２に形成された第２可動側台座部２Ｄ２と、ベース部材１８に形成された第１固定側台座部１８Ｄ１及び第２固定側台座部１８Ｄ２のそれぞれとを繋ぐように構成されている。 More specifically, the first leaf spring 6A is configured to connect the first movable side pedestal portion 2D1 formed on the lens holding member 2 to each of the first fixed side pedestal portion 18D1 and the second fixed side pedestal portion 18D2 formed on the base member 18. Similarly, the second leaf spring 6B is configured to connect the second movable side pedestal portion 2D2 formed on the lens holding member 2 to each of the first fixed side pedestal portion 18D1 and the second fixed side pedestal portion 18D2 formed on the base member 18.

金属部材５は、形状記憶合金ワイヤＳＡの端部が固定されるように構成されている。本実施形態では、金属部材５は、非磁性金属で形成され、固定側金属部材５Ｆ及び可動側金属部材５Ｍを含む。固定側金属部材５Ｆは、ベース部材１８の固定側台座部１８Ｄに固定されるように構成されている。可動側金属部材５Ｍは、レンズ保持部材２の可動側台座部２Ｄに固定されるように構成されている。 The metal member 5 is configured to fix the end of the shape memory alloy wire SA. In this embodiment, the metal member 5 is formed of a non-magnetic metal and includes a fixed side metal member 5F and a movable side metal member 5M. The fixed side metal member 5F is configured to be fixed to the fixed side pedestal portion 18D of the base member 18. The movable side metal member 5M is configured to be fixed to the movable side pedestal portion 2D of the lens holding member 2.

より具体的には、固定側金属部材５Ｆは、固定側ターミナルプレートとも称され、第１固定側ターミナルプレート５Ｆ１～第８固定側ターミナルプレート５Ｆ８を含む。可動側金属部材５Ｍは、可動側ターミナルプレートとも称され、第１可動側ターミナルプレート５Ｍ１～第４可動側ターミナルプレート５Ｍ４を含む。 More specifically, the fixed metal member 5F is also called the fixed terminal plate and includes the first fixed terminal plate 5F1 to the eighth fixed terminal plate 5F8. The movable metal member 5M is also called the movable terminal plate and includes the first movable terminal plate 5M1 to the fourth movable terminal plate 5M4.

次に、図３Ａ及び図３Ｂを参照し、レンズ保持部材２及びベース部材１８のそれぞれと金属部材５との間の位置関係について説明する。図３Ａは、可動側金属部材５Ｍ（可動側ターミナルプレート）及び板ばね６が取り付けられたレンズ保持部材２の斜視図である。図３Ｂは、固定側金属部材５Ｆ（固定側ターミナルプレート）が取り付けられたベース部材１８の斜視図である。なお、明瞭化のため、図３Ａでは、可動側金属部材５Ｍ及び板ばね６にドットパターンが付され、図３Ｂでは、固定側金属部材５Ｆにドットパターンが付されている。 Next, the positional relationship between the lens holding member 2 and the base member 18 and the metal member 5 will be described with reference to Figures 3A and 3B. Figure 3A is a perspective view of the lens holding member 2 to which the movable side metal member 5M (movable side terminal plate) and the leaf spring 6 are attached. Figure 3B is a perspective view of the base member 18 to which the fixed side metal member 5F (fixed side terminal plate) is attached. Note that for clarity, in Figure 3A, a dot pattern is applied to the movable side metal member 5M and the leaf spring 6, and in Figure 3B, a dot pattern is applied to the fixed side metal member 5F.

図３Ａに示す例では、第１可動側ターミナルプレート５Ｍ１は、第１可動側台座部２Ｄ１のＹ１側の側壁（右側取付面）に固定されている。具体的には、第１可動側台座部２Ｄ１に形成された外側（Ｙ１側）に突出する角形の突起部２Ｖと第１可動側ターミナルプレート５Ｍ１に形成された矩形孔ＡＨ（図４Ａ参照。）とがかみ合った状態で、第１可動側ターミナルプレート５Ｍ１は、接着剤により第１可動側台座部２Ｄ１に固定されている。接着剤は、例えば、光硬化型接着剤である。光硬化型接着剤は、例えば、紫外線硬化型接着剤又は可視光硬化型接着剤等である。同様に、第２可動側ターミナルプレート５Ｍ２は、第１可動側台座部２Ｄ１のＸ２側の側壁（後側取付面）に固定され、第３可動側ターミナルプレート５Ｍ３は、第２可動側台座部２Ｄ２のＸ１側の側壁（前側取付面）に固定され、第４可動側ターミナルプレート５Ｍ４は、第２可動側台座部２Ｄ２のＹ２側の側壁（左側取付面）に固定されている。 In the example shown in Figure 3A, the first movable side terminal plate 5M1 is fixed to the Y1 side wall (right mounting surface) of the first movable side base part 2D1. Specifically, the first movable side terminal plate 5M1 is fixed to the first movable side base part 2D1 by an adhesive in a state in which an angular protrusion 2V formed on the first movable side base part 2D1 protruding outward (to the Y1 side) is engaged with a rectangular hole AH (see Figure 4A) formed in the first movable side terminal plate 5M1. The adhesive is, for example, a light-curing adhesive. The light-curing adhesive is, for example, an ultraviolet-curing adhesive or a visible-light-curing adhesive. Similarly, the second movable side terminal plate 5M2 is fixed to the X2 side wall (rear mounting surface) of the first movable side base portion 2D1, the third movable side terminal plate 5M3 is fixed to the X1 side wall (front mounting surface) of the second movable side base portion 2D2, and the fourth movable side terminal plate 5M4 is fixed to the Y2 side wall (left mounting surface) of the second movable side base portion 2D2.

図３Ｂに示す例では、第１固定側ターミナルプレート５Ｆ１及び第２固定側ターミナルプレート５Ｆ２は、ベース部材１８の第２辺部１８Ｅ２に沿って配置された第１固定側台座部１８Ｄ１のＹ１側の側壁（右側取付面）に固定されている。具体的には、第１固定側台座部１８Ｄ１に形成された外側（Ｙ１側）に突出する二つの丸形の突起部１８Ｖと第１固定側ターミナルプレート５Ｆ１及び第２固定側ターミナルプレート５Ｆ２のそれぞれに形成された貫通孔ＲＨ（図４Ａ参照。）とがかみ合った状態で、第１固定側ターミナルプレート５Ｆ１及び第２固定側ターミナルプレート５Ｆ２は、接着剤により第１固定側台座部１８Ｄ１に固定されている。接着剤は、例えば、光硬化型接着剤である。光硬化型接着剤は、例えば、紫外線硬化型接着剤又は可視光硬化型接着剤等である。同様に、第３固定側ターミナルプレート５Ｆ３及び第４固定側ターミナルプレート５Ｆ４（図３Ｂでは不可視。）は、ベース部材１８の第３辺部１８Ｅ３に沿って配置された第２固定側台座部１８Ｄ２のＸ２側の側壁（後側取付面）に固定されている。また、第５固定側ターミナルプレート５Ｆ５及び第６固定側ターミナルプレート５Ｆ６は、ベース部材１８の第１辺部１８Ｅ１に沿って配置された第１固定側台座部１８Ｄ１のＸ１側の側壁（前側取付面）に固定されている。そして、第７固定側ターミナルプレート５Ｆ７及び第８固定側ターミナルプレート５Ｆ８（図３Ｂでは不可視。）は、ベース部材１８の第４辺部１８Ｅ４に沿って配置された第２固定側台座部１８Ｄ２のＹ２側の側壁（左側取付面）に固定されている。 In the example shown in FIG. 3B, the first fixed side terminal plate 5F1 and the second fixed side terminal plate 5F2 are fixed to the Y1 side wall (right mounting surface) of the first fixed side pedestal portion 18D1 arranged along the second side portion 18E2 of the base member 18. Specifically, the first fixed side terminal plate 5F1 and the second fixed side terminal plate 5F2 are fixed to the first fixed side pedestal portion 18D1 by an adhesive in a state in which two round protrusions 18V protruding outward (Y1 side) formed on the first fixed side pedestal portion 18D1 and through holes RH (see FIG. 4A) formed on each of the first fixed side terminal plate 5F1 and the second fixed side terminal plate 5F2 are engaged. The adhesive is, for example, a photocurable adhesive. The photocurable adhesive is, for example, an ultraviolet-curable adhesive or a visible-light-curable adhesive. Similarly, the third fixed side terminal plate 5F3 and the fourth fixed side terminal plate 5F4 (not visible in FIG. 3B) are fixed to the X2 side wall (rear mounting surface) of the second fixed side pedestal portion 18D2 arranged along the third side portion 18E3 of the base member 18. The fifth fixed side terminal plate 5F5 and the sixth fixed side terminal plate 5F6 are fixed to the X1 side wall (front mounting surface) of the first fixed side pedestal portion 18D1 arranged along the first side portion 18E1 of the base member 18. The seventh fixed side terminal plate 5F7 and the eighth fixed side terminal plate 5F8 (not visible in FIG. 3B) are fixed to the Y2 side wall (left mounting surface) of the second fixed side pedestal portion 18D2 arranged along the fourth side portion 18E4 of the base member 18.

形状記憶合金ワイヤＳＡは、上側カバー部材４Ｕの第１外周壁部４Ａの内面に沿うように延びており、固定側部材ＲＧに対して可動側部材ＭＢを移動可能に支持できるように構成されている。本実施形態では、形状記憶合金ワイヤＳＡは、第１ワイヤＳＡ１～第８ワイヤＳＡ８を含み、固定側部材ＲＧとしてのベース部材１８に対して、可動側部材ＭＢとしてのレンズ保持部材２を移動可能に支持できるように構成されている。第１ワイヤＳＡ１～第８ワイヤＳＡ８のそれぞれは、図２に示すように、一端が圧着又は溶接等により固定側金属部材５Ｆに固着され、且つ、他端が圧着又は溶接等により可動側金属部材５Ｍに固着されている。 The shape memory alloy wire SA extends along the inner surface of the first outer wall portion 4A of the upper cover member 4U, and is configured to movably support the movable side member MB relative to the fixed side member RG. In this embodiment, the shape memory alloy wire SA includes the first wire SA1 to the eighth wire SA8, and is configured to movably support the lens holding member 2 as the movable side member MB relative to the base member 18 as the fixed side member RG. As shown in FIG. 2, each of the first wire SA1 to the eighth wire SA8 has one end fixed to the fixed side metal member 5F by crimping, welding, etc., and the other end fixed to the movable side metal member 5M by crimping, welding, etc.

次に、図４Ａ及び図４Ｂを参照し、形状記憶合金ワイヤＳＡが取り付けられる金属部材５について説明する。図４Ａは、第１可動側ターミナルプレート５Ｍ１及び第１固定側ターミナルプレート５Ｆ１のそれぞれに取り付けられた第１ワイヤＳＡ１、並びに、第１可動側ターミナルプレート５Ｍ１及び第２固定側ターミナルプレート５Ｆ２のそれぞれに取り付けられた第２ワイヤＳＡ２をＹ１側から見たときの図である。図４Ｂは、第１可動側ターミナルプレート５Ｍ１及び第１固定側ターミナルプレート５Ｆ１のそれぞれに取り付けられた第１ワイヤＳＡ１、並びに、第１可動側ターミナルプレート５Ｍ１及び第２固定側ターミナルプレート５Ｆ２のそれぞれに取り付けられた第２ワイヤＳＡ２をＸ１側から見たときの図である。なお、図４Ａ及び図４Ｂに示す各部材の位置関係は、レンズ駆動装置１０１が組み立てられたときの位置関係に対応している。そして、図４Ａ及び図４Ｂでは、明瞭化のため、他の部材の図示が省略されている。また、図４Ａ及び図４Ｂを参照する以下の説明は、第１ワイヤＳＡ１及び第２ワイヤＳＡ２の組み合わせに関するが、第３ワイヤＳＡ３及び第４ワイヤＳＡ４の組み合わせ、第５ワイヤＳＡ５及び第６ワイヤＳＡ６の組み合わせ、並びに、第７ワイヤＳＡ７及び第８ワイヤＳＡ８の組み合わせについても同様に適用され得る。 Next, the metal member 5 to which the shape memory alloy wire SA is attached will be described with reference to Figures 4A and 4B. Figure 4A is a diagram of the first wire SA1 attached to the first movable side terminal plate 5M1 and the first fixed side terminal plate 5F1, respectively, and the second wire SA2 attached to the first movable side terminal plate 5M1 and the second fixed side terminal plate 5F2, respectively, as viewed from the Y1 side. Figure 4B is a diagram of the first wire SA1 attached to the first movable side terminal plate 5M1 and the first fixed side terminal plate 5F1, respectively, and the second wire SA2 attached to the first movable side terminal plate 5M1 and the second fixed side terminal plate 5F2, respectively, as viewed from the X1 side. The positional relationship of each member shown in Figures 4A and 4B corresponds to the positional relationship when the lens driving device 101 is assembled. In Figures 4A and 4B, other members are omitted from the illustration for clarity. Also, the following description with reference to Figures 4A and 4B relates to the combination of the first wire SA1 and the second wire SA2, but can be similarly applied to the combination of the third wire SA3 and the fourth wire SA4, the combination of the fifth wire SA5 and the sixth wire SA6, and the combination of the seventh wire SA7 and the eighth wire SA8.

具体的には、第１ワイヤＳＡ１の一端は、第１可動側ターミナルプレート５Ｍ１の下側の保持部Ｊ３のところで第１可動側ターミナルプレート５Ｍ１に固定され、第１ワイヤＳＡ１の他端は、第１固定側ターミナルプレート５Ｆ１の保持部Ｊ２のところで第１固定側ターミナルプレート５Ｆ１に固定されている。同様に、第２ワイヤＳＡ２の一端は、第１可動側ターミナルプレート５Ｍ１の上側の保持部Ｊ１のところで第１可動側ターミナルプレート５Ｍ１に固定され、第２ワイヤＳＡ２の他端は、第２固定側ターミナルプレート５Ｆ２の保持部Ｊ４のところで第２固定側ターミナルプレート５Ｆ２に固定されている。 Specifically, one end of the first wire SA1 is fixed to the first movable terminal plate 5M1 at the lower holding portion J3 of the first movable terminal plate 5M1, and the other end of the first wire SA1 is fixed to the first fixed terminal plate 5F1 at the holding portion J2 of the first fixed terminal plate 5F1. Similarly, one end of the second wire SA2 is fixed to the first movable terminal plate 5M1 at the upper holding portion J1 of the first movable terminal plate 5M1, and the other end of the second wire SA2 is fixed to the second fixed terminal plate 5F2 at the holding portion J4 of the second fixed terminal plate 5F2.

保持部Ｊ１は、第１可動側ターミナルプレート５Ｍ１の一部を折り曲げることによって形成されている。具体的には、第１可動側ターミナルプレート５Ｍ１の一部は、第２ワイヤＳＡ２の一端を挟み込んだ状態で折り曲げられることにより保持部Ｊ１を形成している。そして、第２ワイヤＳＡ２の一端は、溶接によって保持部Ｊ１に固定されている。保持部Ｊ２～保持部Ｊ４についても同様である。 The retaining portion J1 is formed by bending a part of the first movable terminal plate 5M1. Specifically, the part of the first movable terminal plate 5M1 is bent while sandwiching one end of the second wire SA2 to form the retaining portion J1. One end of the second wire SA2 is fixed to the retaining portion J1 by welding. The same is true for the retaining portions J2 to J4.

第１ワイヤＳＡ１及び第２ワイヤＳＡ２は、図４Ａに示すように、互いにねじれの位置となるように配置されている。すなわち、第１ワイヤＳＡ１及び第２ワイヤＳＡ２は、互いに接触しない（非接触となる）ように配置されている。 The first wire SA1 and the second wire SA2 are arranged so that they are twisted relative to each other, as shown in FIG. 4A. In other words, the first wire SA1 and the second wire SA2 are arranged so that they do not contact each other (are non-contacting).

次に、図５Ａ～図５Ｃを参照し、固定側部材ＲＧの一部であるベース部材１８の詳細について説明する。図５Ａ～図５Ｃは、ベース部材１８の斜視図である。具体的には、図５Ａは、導電部材ＣＭが取り除かれた状態のベース部材１８の斜視図であり、図５Ｂは、ベース部材１８内に埋設されている導電部材ＣＭの斜視図であり、図５Ｃは、導電部材ＣＭが埋設された状態のベース部材１８の斜視図である。なお、図５Ｂ及び図５Ｃでは、明瞭化のため、導電部材ＣＭにドットパターンが付されている。 Next, the details of the base member 18, which is part of the fixed-side member RG, will be described with reference to Figures 5A to 5C. Figures 5A to 5C are perspective views of the base member 18. Specifically, Figure 5A is a perspective view of the base member 18 with the conductive member CM removed, Figure 5B is a perspective view of the conductive member CM embedded in the base member 18, and Figure 5C is a perspective view of the base member 18 with the conductive member CM embedded. Note that in Figures 5B and 5C, a dot pattern is applied to the conductive member CM for clarity.

ベース部材１８は、第１ワイヤＳＡ１～第８ワイヤＳＡ８のそれぞれの一端を支持するワイヤ支持部材として機能するように構成されている。この構成により、可動側部材ＭＢは、第１ワイヤＳＡ１～第８ワイヤＳＡ８によって、光軸ＪＤに平行な方向であるＺ軸方向に移動可能な状態で支持されている。 The base member 18 is configured to function as a wire support member that supports one end of each of the first wire SA1 to the eighth wire SA8. With this configuration, the movable side member MB is supported by the first wire SA1 to the eighth wire SA8 in a state in which it can move in the Z-axis direction, which is a direction parallel to the optical axis JD.

ベース部材１８の被写体側の面（Ｚ１側の面）である上面には、固定側台座部１８Ｄが形成されている。固定側台座部１８Ｄは、第１固定側台座部１８Ｄ１及び第２固定側台座部１８Ｄ２を含む。第１固定側台座部１８Ｄ１及び第２固定側台座部１８Ｄ２は、光軸ＪＤを挟んで対向するように配置されている。 A fixed-side pedestal portion 18D is formed on the upper surface of the base member 18, which is the surface facing the subject (the surface facing the Z1 side). The fixed-side pedestal portion 18D includes a first fixed-side pedestal portion 18D1 and a second fixed-side pedestal portion 18D2. The first fixed-side pedestal portion 18D1 and the second fixed-side pedestal portion 18D2 are arranged to face each other across the optical axis JD.

ベース部材１８には、図５Ｂに示すような導電部材ＣＭがインサート成形によって埋め込まれている。本実施形態では、導電部材ＣＭは、鉄等の磁性金属で形成されている。そして、導電部材ＣＭは、ベース部材１８の下面（Ｚ２側の面）から突出して下方（Ｚ２方向）に延びる第１端子部ＴＭ１～第１１端子部ＴＭ１１と、ベース部材１８の上面（Ｚ１側の面）に露出する第９接合面部ＣＰ９及び第１０接合面部ＣＰ１０と、を有するように構成されている。 The conductive member CM shown in FIG. 5B is embedded in the base member 18 by insert molding. In this embodiment, the conductive member CM is formed of a magnetic metal such as iron. The conductive member CM is configured to have a first terminal portion TM1 to an eleventh terminal portion TM11 that protrude from the lower surface (Z2 side surface) of the base member 18 and extend downward (in the Z2 direction), and a ninth bonding surface portion CP9 and a tenth bonding surface portion CP10 that are exposed on the upper surface (Z1 side surface) of the base member 18.

具体的には、導電部材ＣＭは、第１導電部材ＣＭ１～第１１導電部材ＣＭ１１を含む。そして、第１導電部材ＣＭ１は、第１端子部ＴＭ１及び第１接続部ＥＤ１を含む。第２導電部材ＣＭ２は、第２端子部ＴＭ２及び第２接続部ＥＤ２を含む。第３導電部材ＣＭ３は、第３端子部ＴＭ３及び第３接続部ＥＤ３を含む。第４導電部材ＣＭ４は、第４端子部ＴＭ４及び第４接続部ＥＤ４を含む。第５導電部材ＣＭ５は、第５端子部ＴＭ５及び第５接続部ＥＤ５を含む。第６導電部材ＣＭ６は、第６端子部ＴＭ６及び第６接続部ＥＤ６を含む。第７導電部材ＣＭ７は、第７端子部ＴＭ７及び第７接続部ＥＤ７を含む。第８導電部材ＣＭ８は、第８端子部ＴＭ８及び第８接続部ＥＤ８を含む。第９導電部材ＣＭ９は、第９端子部ＴＭ９及び第９接合面部ＣＰ９を含む。第１０導電部材ＣＭ１０は、第１０端子部ＴＭ１０及び第１０接合面部ＣＰ１０を含む。第１１導電部材ＣＭ１１は、第１１端子部ＴＭ１１及び第１１接続部ＥＤ１１を含む。 Specifically, the conductive member CM includes a first conductive member CM1 to an eleventh conductive member CM11. The first conductive member CM1 includes a first terminal portion TM1 and a first connection portion ED1. The second conductive member CM2 includes a second terminal portion TM2 and a second connection portion ED2. The third conductive member CM3 includes a third terminal portion TM3 and a third connection portion ED3. The fourth conductive member CM4 includes a fourth terminal portion TM4 and a fourth connection portion ED4. The fifth conductive member CM5 includes a fifth terminal portion TM5 and a fifth connection portion ED5. The sixth conductive member CM6 includes a sixth terminal portion TM6 and a sixth connection portion ED6. The seventh conductive member CM7 includes a seventh terminal portion TM7 and a seventh connection portion ED7. The eighth conductive member CM8 includes an eighth terminal portion TM8 and an eighth connection portion ED8. The ninth conductive member CM9 includes a ninth terminal portion TM9 and a ninth bonding surface portion CP9. The tenth conductive member CM10 includes a tenth terminal portion TM10 and a tenth bonding surface portion CP10. The eleventh conductive member CM11 includes an eleventh terminal portion TM11 and an eleventh connection portion ED11.

第１端子部ＴＭ１～第４端子部ＴＭ４、第１０端子部ＴＭ１０、及び第１１端子部ＴＭ１１は、ベース部材１８の第３辺部１８Ｅ３に沿って配置されている。第５端子部ＴＭ５～第９端子部ＴＭ９は、ベース部材１８の第１辺部１８Ｅ１に沿って配置されている。 The first terminal TM1 to the fourth terminal TM4, the tenth terminal TM10, and the eleventh terminal TM11 are arranged along the third side 18E3 of the base member 18. The fifth terminal TM5 to the ninth terminal TM9 are arranged along the first side 18E1 of the base member 18.

すなわち、第１導電部材ＣＭ１の第１接続部ＥＤ１は、ベース部材１８の第２辺部１８Ｅ２に沿って配置され、第１導電部材ＣＭ１の第１端子部ＴＭ１は、ベース部材１８の第２辺部１８Ｅ２ではなく第３辺部１８Ｅ３に沿って配置されている。同様に、第２導電部材ＣＭ２の第２接続部ＥＤ２は、ベース部材１８の第２辺部１８Ｅ２に沿って配置され、第２導電部材ＣＭ２の第２端子部ＴＭ２は、ベース部材１８の第２辺部１８Ｅ２ではなく第３辺部１８Ｅ３に沿って配置されている。 That is, the first connection portion ED1 of the first conductive member CM1 is disposed along the second side portion 18E2 of the base member 18, and the first terminal portion TM1 of the first conductive member CM1 is disposed along the third side portion 18E3, not the second side portion 18E2, of the base member 18. Similarly, the second connection portion ED2 of the second conductive member CM2 is disposed along the second side portion 18E2 of the base member 18, and the second terminal portion TM2 of the second conductive member CM2 is disposed along the third side portion 18E3, not the second side portion 18E2, of the base member 18.

また、第７導電部材ＣＭ７の第７接続部ＥＤ７は、ベース部材１８の第４辺部１８Ｅ４に沿って配置され、第７導電部材ＣＭ７の第７端子部ＴＭ７は、ベース部材１８の第４辺部１８Ｅ４ではなく第１辺部１８Ｅ１に沿って配置されている。同様に、第８導電部材ＣＭ８の第８接続部ＥＤ８は、ベース部材１８の第４辺部１８Ｅ４に沿って配置され、第８導電部材ＣＭ８の第８端子部ＴＭ８は、ベース部材１８の第４辺部１８Ｅ４ではなく第１辺部１８Ｅ１に沿って配置されている。 The seventh connection portion ED7 of the seventh conductive member CM7 is disposed along the fourth side portion 18E4 of the base member 18, and the seventh terminal portion TM7 of the seventh conductive member CM7 is disposed along the first side portion 18E1 of the base member 18, not the fourth side portion 18E4. Similarly, the eighth connection portion ED8 of the eighth conductive member CM8 is disposed along the fourth side portion 18E4 of the base member 18, and the eighth terminal portion TM8 of the eighth conductive member CM8 is disposed along the first side portion 18E1 of the base member 18, not the fourth side portion 18E4.

このように、第１端子部ＴＭ１～第１１端子部ＴＭ１１は、ベース部材１８の第１辺部１８Ｅ１又は第３辺部１８Ｅ３に沿って配置され、ベース部材１８の第２辺部１８Ｅ２及び第４辺部１８Ｅ４に沿って配置されることはない。 In this way, the first terminal portion TM1 to the eleventh terminal portion TM11 are arranged along the first side portion 18E1 or the third side portion 18E3 of the base member 18, and are not arranged along the second side portion 18E2 and the fourth side portion 18E4 of the base member 18.

次に、図６Ａ及び図６Ｂを参照し、板ばね６、形状記憶合金ワイヤＳＡ、金属部材５、及び導電部材ＣＭの位置関係について説明する。図６Ａ及び図６Ｂは、板ばね６、形状記憶合金ワイヤＳＡ、金属部材５、及び導電部材ＣＭの位置関係を示す図である。具体的には、図６Ａは、各部材（板ばね６、形状記憶合金ワイヤＳＡ、金属部材５、及び導電部材ＣＭ）の斜視図であり、図６Ｂは、各部材の上面図である。なお、図６Ｂでは、明瞭化のため、形状記憶合金ワイヤＳＡ及び導電部材ＣＭの図示が省略されている。また、図６Ｂでは、板ばね６にドットパターンが付されている。 Next, referring to Figures 6A and 6B, the positional relationship between the leaf spring 6, the shape memory alloy wire SA, the metal member 5, and the conductive member CM will be described. Figures 6A and 6B are diagrams showing the positional relationship between the leaf spring 6, the shape memory alloy wire SA, the metal member 5, and the conductive member CM. Specifically, Figure 6A is a perspective view of each member (leaf spring 6, shape memory alloy wire SA, metal member 5, and conductive member CM), and Figure 6B is a top view of each member. Note that in Figure 6B, the shape memory alloy wire SA and the conductive member CM are omitted for clarity. Also, in Figure 6B, a dot pattern is applied to the leaf spring 6.

板ばね６は、図６Ｂに示すように、第１板ばね６Ａ及び第２板ばね６Ｂを含む。そして、第１板ばね６Ａは、ベース部材１８の第１固定側台座部１８Ｄ１（図２参照。）に固定される第１部分６Ａ１と、ベース部材１８の第２固定側台座部１８Ｄ２（図２参照。）に固定される第２部分６Ａ２と、レンズ保持部材２の第１可動側台座部２Ｄ１（図２参照。）に固定される第３部分６Ａ３と、第１部分６Ａ１と第３部分６Ａ３を繋ぐ第４部分６Ａ４と、第２部分６Ａ２と第３部分６Ａ３を繋ぐ第５部分６Ａ５と、を有する。 As shown in Fig. 6B, the leaf spring 6 includes a first leaf spring 6A and a second leaf spring 6B. The first leaf spring 6A has a first portion 6A1 fixed to the first fixed side pedestal portion 18D1 (see Fig. 2) of the base member 18, a second portion 6A2 fixed to the second fixed side pedestal portion 18D2 (see Fig. 2) of the base member 18, a third portion 6A3 fixed to the first movable side pedestal portion 2D1 (see Fig. 2) of the lens holding member 2, a fourth portion 6A4 connecting the first portion 6A1 and the third portion 6A3, and a fifth portion 6A5 connecting the second portion 6A2 and the third portion 6A3.

第１部分６Ａ１には、第１固定側台座部１８Ｄ１に形成された上側に突出する丸形の突出部１８Ｔ（図３Ｂ参照。）が挿通される第１貫通孔６ＡＨ１及び第２貫通孔６ＡＨ２が形成されている。本実施形態では、板ばね６と突出部１８Ｔとの固定は、突出部１８Ｔに熱かしめ又は冷間かしめを施すことによって実現される。但し、板ばね６と突出部１８Ｔとの固定は、接着剤によって実現されてもよい。 The first portion 6A1 is formed with a first through hole 6AH1 and a second through hole 6AH2 through which a round protrusion 18T (see FIG. 3B) formed on the first fixed side base portion 18D1 and protruding upward is inserted. In this embodiment, the leaf spring 6 and the protrusion 18T are fixed by hot crimping or cold crimping the protrusion 18T. However, the leaf spring 6 and the protrusion 18T may also be fixed with an adhesive.

第２部分６Ａ２には、第２固定側台座部１８Ｄ２に形成された上側に突出する丸形の突出部１８Ｔ（図３Ｂ参照。）が挿通される第３貫通孔６ＡＨ３と、第１０導電部材ＣＭ１０の第１０接合面部ＣＰ１０（図５Ｃ参照。）との接合に用いられる第４貫通孔６ＡＨ４とが形成されている。本実施形態では、板ばね６と導電部材ＣＭとの接合は、レーザ溶接等の溶接によって実現される。但し、板ばね６と導電部材ＣＭとの接合は、半田又は導電性接着剤等によって実現されてもよい。 The second portion 6A2 is formed with a third through hole 6AH3 through which a round protrusion 18T (see FIG. 3B) formed on the second fixed side base portion 18D2 protruding upward is inserted, and a fourth through hole 6AH4 used for joining the tenth joint surface portion CP10 (see FIG. 5C) of the tenth conductive member CM10. In this embodiment, the leaf spring 6 and the conductive member CM are joined by welding such as laser welding. However, the leaf spring 6 and the conductive member CM may also be joined by solder, a conductive adhesive, or the like.

第３部分６Ａ３には、第１可動側台座部２Ｄ１に形成された上側に突出する丸形の突出部２Ｔ（図３Ａ参照。）が挿通される第５貫通孔６ＡＨ５及び第６貫通孔６ＡＨ６が形成されている。本実施形態では、板ばね６と突出部２Ｔの固定は、突出部２Ｔに熱かしめ又は冷間かしめを施すことによって実現される。但し、板ばね６と突出部２Ｔとの固定は、接着剤によって実現されてもよい。 The third portion 6A3 is formed with a fifth through hole 6AH5 and a sixth through hole 6AH6 through which a round protruding portion 2T (see FIG. 3A) formed on the first movable side base portion 2D1 and protruding upward is inserted. In this embodiment, the leaf spring 6 and the protruding portion 2T are fixed by hot crimping or cold crimping the protruding portion 2T. However, the leaf spring 6 and the protruding portion 2T may also be fixed with an adhesive.

同様に、第２板ばね６Ｂは、ベース部材１８の第１固定側台座部１８Ｄ１（図２参照。）に固定される第１部分６Ｂ１と、ベース部材１８の第２固定側台座部１８Ｄ２（図２参照。）に固定される第２部分６Ｂ２と、レンズ保持部材２の第２可動側台座部２Ｄ２（図２参照。）に固定される第３部分６Ｂ３と、第１部分６Ｂ１と第３部分６Ｂ３を繋ぐ第４部分６Ｂ４と、第２部分６Ｂ２と第３部分６Ｂ３を繋ぐ第５部分６Ｂ５と、を有する。 Similarly, the second leaf spring 6B has a first portion 6B1 fixed to the first fixed side pedestal portion 18D1 (see FIG. 2) of the base member 18, a second portion 6B2 fixed to the second fixed side pedestal portion 18D2 (see FIG. 2) of the base member 18, a third portion 6B3 fixed to the second movable side pedestal portion 2D2 (see FIG. 2) of the lens holding member 2, a fourth portion 6B4 connecting the first portion 6B1 and the third portion 6B3, and a fifth portion 6B5 connecting the second portion 6B2 and the third portion 6B3.

第１部分６Ｂ１には、第１固定側台座部１８Ｄ１に形成された上側に突出する丸形の突出部１８Ｔ（図３Ｂ参照。）が挿通される第１貫通孔６ＢＨ１と、第９導電部材ＣＭ９の第９接合面部ＣＰ９（図５Ｃ参照。）との接合に用いられる第２貫通孔６ＢＨ２とが形成されている。 The first portion 6B1 is formed with a first through hole 6BH1 through which a round protrusion 18T (see FIG. 3B) formed on the first fixed side base portion 18D1 protruding upward is inserted, and a second through hole 6BH2 used for joining to the ninth joint surface portion CP9 (see FIG. 5C) of the ninth conductive member CM9.

第２部分６Ｂ２には、第２固定側台座部１８Ｄ２に形成された上側に突出する丸形の突出部１８Ｔ（図３Ｂ参照。）が挿通される第３貫通孔６ＢＨ３及び第４貫通孔６ＢＨ４が形成されている。 The second portion 6B2 is formed with a third through hole 6BH3 and a fourth through hole 6BH4 through which the upwardly protruding round protrusion 18T (see FIG. 3B) formed on the second fixed side base portion 18D2 is inserted.

第３部分６Ｂ３には、第２可動側台座部２Ｄ２に形成された上側に突出する丸形の突出部２Ｔ（図３Ａ参照。）が挿通される第５貫通孔６ＢＨ５及び第６貫通孔６ＢＨ６が形成されている。 The third portion 6B3 is formed with a fifth through hole 6BH5 and a sixth through hole 6BH6 through which the upwardly protruding round protrusion 2T (see FIG. 3A) formed on the second movable side base portion 2D2 is inserted.

なお、第１板ばね６Ａの第４部分６Ａ４及び第５部分６Ａ５と第２板ばね６Ｂの第４部分６Ｂ４及び第５部分６Ｂ５とは、複数の屈曲部を有する弾性変形可能な腕部である。そのため、レンズ保持部材２は、ベース部材１８（固定側部材ＲＧ）に対して、光軸ＪＤに平行な方向のみならず、光軸ＪＤと交差する方向にも移動可能となっている。 The fourth portion 6A4 and the fifth portion 6A5 of the first leaf spring 6A and the fourth portion 6B4 and the fifth portion 6B5 of the second leaf spring 6B are elastically deformable arms having multiple bends. Therefore, the lens holding member 2 can move relative to the base member 18 (fixed member RG) not only in a direction parallel to the optical axis JD, but also in a direction intersecting the optical axis JD.

図６Ｂに示すように、第１板ばね６Ａ及び第２板ばね６Ｂは、ほぼ同じ形状を有する。具体的には、第１板ばね６Ａ及び第２板ばね６Ｂは、光軸ＪＤに関して２回回転対称（最小回転角が１８０°の回転対称）となるように構成されている。そのため、この構成は、レンズ駆動装置１０１の部品点数を減らすことができる。また、第１板ばね６Ａ及び第２板ばね６Ｂは、レンズ保持部材２をバランス良く空中で支持できる。また、板ばね６は、８本の形状記憶合金ワイヤＳＡ（第１ワイヤＳＡ１～第８ワイヤＳＡ８）によって支持される可動側部材ＭＢの重量バランスに悪影響を及ぼすこともない。 As shown in FIG. 6B, the first leaf spring 6A and the second leaf spring 6B have approximately the same shape. Specifically, the first leaf spring 6A and the second leaf spring 6B are configured to have two-fold rotational symmetry (rotational symmetry with a minimum rotation angle of 180°) with respect to the optical axis JD. Therefore, this configuration can reduce the number of parts in the lens driving device 101. Furthermore, the first leaf spring 6A and the second leaf spring 6B can support the lens holding member 2 in a well-balanced manner in the air. Furthermore, the leaf spring 6 does not adversely affect the weight balance of the movable side member MB supported by the eight shape memory alloy wires SA (first wire SA1 to eighth wire SA8).

第１導電部材ＣＭ１の第１接続部ＥＤ１は、図６Ａに示すように、半田付けによって第１固定側ターミナルプレート５Ｆ１の接続部ＣＴ１に垂直に接合される。すなわち、第１接続部ＥＤ１と接続部ＣＴ１とは互いの表面が略垂直な状態で接合される。同様に、第２導電部材ＣＭ２の第２接続部ＥＤ２は、半田付けによって第２固定側ターミナルプレート５Ｆ２の接続部ＣＴ２に垂直に接合され、第３導電部材ＣＭ３の第３接続部ＥＤ３は、半田付けによって第３固定側ターミナルプレート５Ｆ３の接続部ＣＴ３に垂直に接合され、第４導電部材ＣＭ４の第４接続部ＥＤ４は、半田付けによって第４固定側ターミナルプレート５Ｆ４の接続部ＣＴ４に垂直に接合される。また、第５導電部材ＣＭ５の第５接続部ＥＤ５は、半田付けによって第５固定側ターミナルプレート５Ｆ５の接続部ＣＴ５に垂直に接合され、第６導電部材ＣＭ６の第６接続部ＥＤ６は、半田付けによって第６固定側ターミナルプレート５Ｆ６の接続部ＣＴ６に垂直に接合され、第７導電部材ＣＭ７の第７接続部ＥＤ７は、半田付けによって第７固定側ターミナルプレート５Ｆ７の接続部ＣＴ７に垂直に接合され、第８導電部材ＣＭ８の第８接続部ＥＤ８は、半田付けによって第８固定側ターミナルプレート５Ｆ８の接続部ＣＴ８に垂直に接合される。 6A, the first connection portion ED1 of the first conductive member CM1 is joined perpendicularly to the connection portion CT1 of the first fixed side terminal plate 5F1 by soldering. That is, the first connection portion ED1 and the connection portion CT1 are joined with their surfaces substantially perpendicular to each other. Similarly, the second connection portion ED2 of the second conductive member CM2 is joined perpendicularly to the connection portion CT2 of the second fixed side terminal plate 5F2 by soldering, the third connection portion ED3 of the third conductive member CM3 is joined perpendicularly to the connection portion CT3 of the third fixed side terminal plate 5F3 by soldering, and the fourth connection portion ED4 of the fourth conductive member CM4 is joined perpendicularly to the connection portion CT4 of the fourth fixed side terminal plate 5F4 by soldering. In addition, the fifth connection portion ED5 of the fifth conductive member CM5 is vertically joined to the connection portion CT5 of the fifth fixed side terminal plate 5F5 by soldering, the sixth connection portion ED6 of the sixth conductive member CM6 is vertically joined to the connection portion CT6 of the sixth fixed side terminal plate 5F6 by soldering, the seventh connection portion ED7 of the seventh conductive member CM7 is vertically joined to the connection portion CT7 of the seventh fixed side terminal plate 5F7 by soldering, and the eighth connection portion ED8 of the eighth conductive member CM8 is vertically joined to the connection portion CT8 of the eighth fixed side terminal plate 5F8 by soldering.

第１可動側ターミナルプレート５Ｍ１の接続部ＣＴ９は、図６Ｂに示すように、半田付けによって第１板ばね６Ａの第３部分６Ａ３に垂直に接合される。すなわち、接続部ＣＴ９と第３部分６Ａ３とは互いの表面が略垂直な状態で接合される。同様に、第２可動側ターミナルプレート５Ｍ２の接続部ＣＴ１０は、半田付けによって第１板ばね６Ａの第３部分６Ａ３に垂直に接合され、第３可動側ターミナルプレート５Ｍ３の接続部ＣＴ１１は、半田付けによって第２板ばね６Ｂの第３部分６Ｂ３に垂直に接合され、第４可動側ターミナルプレート５Ｍ４の接続部ＣＴ１２は、半田付けによって第２板ばね６Ｂの第３部分６Ｂ３に垂直に接合される。 The connection portion CT9 of the first movable terminal plate 5M1 is joined vertically to the third portion 6A3 of the first leaf spring 6A by soldering, as shown in FIG. 6B. That is, the connection portion CT9 and the third portion 6A3 are joined with their surfaces approximately perpendicular to each other. Similarly, the connection portion CT10 of the second movable terminal plate 5M2 is joined vertically to the third portion 6A3 of the first leaf spring 6A by soldering, the connection portion CT11 of the third movable terminal plate 5M3 is joined vertically to the third portion 6B3 of the second leaf spring 6B by soldering, and the connection portion CT12 of the fourth movable terminal plate 5M4 is joined vertically to the third portion 6B3 of the second leaf spring 6B by soldering.

一方で、第１固定側ターミナルプレート５Ｆ１は、図６Ｂに示すように、第１板ばね６Ａの第１部分６Ａ１から離間して配置されており、第１板ばね６Ａの第１部分６Ａ１には接触していない。同様に、第３固定側ターミナルプレート５Ｆ３は、第１板ばね６Ａの第２部分６Ａ２には接触しておらず、第５固定側ターミナルプレート５Ｆ５は、第２板ばね６Ｂの第１部分６Ｂ１には接触しておらず、第７固定側ターミナルプレート５Ｆ７は、第２板ばね６Ｂの第２部分６Ｂ２には接触していない。 On the other hand, as shown in FIG. 6B, the first fixed side terminal plate 5F1 is disposed away from the first portion 6A1 of the first leaf spring 6A and is not in contact with the first portion 6A1 of the first leaf spring 6A. Similarly, the third fixed side terminal plate 5F3 is not in contact with the second portion 6A2 of the first leaf spring 6A, the fifth fixed side terminal plate 5F5 is not in contact with the first portion 6B1 of the second leaf spring 6B, and the seventh fixed side terminal plate 5F7 is not in contact with the second portion 6B2 of the second leaf spring 6B.

第９導電部材ＣＭ９の第９接合面部ＣＰ９（図５Ｂ参照。）は、第２板ばね６Ｂの第１部分６Ｂ１に形成された第２貫通孔６ＢＨ２のところで、レーザ溶接等の溶接により、第２板ばね６Ｂの第１部分６Ｂ１に平行に接合される。すなわち、第９接合面部ＣＰ９と第１部分６Ｂ１とは互いの表面が略平行な状態で接合される。同様に、第１０導電部材ＣＭ１０の第１０接合面部ＣＰ１０（図５Ｂ参照。）は、第１板ばね６Ａの第２部分６Ａ２に形成された第４貫通孔６ＡＨ４のところで、レーザ溶接等の溶接により、第１板ばね６Ａの第２部分６Ａ２に平行に接合される。 The ninth joint surface portion CP9 (see FIG. 5B) of the ninth conductive member CM9 is joined in parallel to the first portion 6B1 of the second leaf spring 6B by welding such as laser welding at the second through hole 6BH2 formed in the first portion 6B1 of the second leaf spring 6B. That is, the ninth joint surface portion CP9 and the first portion 6B1 are joined in a state in which their surfaces are approximately parallel to each other. Similarly, the tenth joint surface portion CP10 (see FIG. 5B) of the tenth conductive member CM10 is joined in parallel to the second portion 6A2 of the first leaf spring 6A by welding such as laser welding at the fourth through hole 6AH4 formed in the second portion 6A2 of the first leaf spring 6A.

次に、図７Ａ及び図７Ｂを参照し、形状記憶合金ワイヤＳＡを流れる電流の経路について説明する。図７Ａ及び図７Ｂは、図６Ａ及び図６Ｂに示す構成の一部の斜視図である。なお、図７Ａでは、明瞭化のため、第１導電部材ＣＭ１及び第１０導電部材ＣＭ１０には粗いドットパターンが付され、第１板ばね６Ａには細かいドットパターンが付され、第１可動側ターミナルプレート５Ｍ１及び第１固定側ターミナルプレート５Ｆ１には更に細かいドットパターンが付されている。同様に、図７Ｂでは、明瞭化のため、第２導電部材ＣＭ２及び第１０導電部材ＣＭ１０には粗いドットパターンが付され、第１板ばね６Ａには細かいドットパターンが付され、第１可動側ターミナルプレート５Ｍ１及び第２固定側ターミナルプレート５Ｆ２には更に細かいドットパターンが付されている。 Next, referring to Figures 7A and 7B, the path of the current flowing through the shape memory alloy wire SA will be described. Figures 7A and 7B are perspective views of a portion of the configuration shown in Figures 6A and 6B. In Figure 7A, for clarity, the first conductive member CM1 and the tenth conductive member CM10 are given a coarse dot pattern, the first leaf spring 6A is given a fine dot pattern, and the first movable side terminal plate 5M1 and the first fixed side terminal plate 5F1 are given an even finer dot pattern. Similarly, in Figure 7B, for clarity, the second conductive member CM2 and the tenth conductive member CM10 are given a coarse dot pattern, the first leaf spring 6A is given a fine dot pattern, and the first movable side terminal plate 5M1 and the second fixed side terminal plate 5F2 are given an even finer dot pattern.

具体的には、図７Ａは、第１導電部材ＣＭ１の第１端子部ＴＭ１が高電位に接続され、第１０導電部材ＣＭ１０の第１０端子部ＴＭ１０が低電位に接続されたときの電流の経路を示し、図７Ｂは、第２導電部材ＣＭ２の第２端子部ＴＭ２が高電位に接続され、第１０導電部材ＣＭ１０の第１０端子部ＴＭ１０が低電位に接続されたときの電流の経路を示す。以下の説明は、第１ワイヤＳＡ１又は第２ワイヤＳＡ２を流れる電流の経路に関するが、第３ワイヤＳＡ３又は第４ワイヤＳＡ４を流れる電流の経路、第５ワイヤＳＡ５又は第６ワイヤＳＡ６を流れる電流の経路、及び、第７ワイヤＳＡ７又は第８ワイヤＳＡ８を流れる電流の経路についても同様に適用され得る。 Specifically, FIG. 7A shows the path of the current when the first terminal TM1 of the first conductive member CM1 is connected to a high potential and the tenth terminal TM10 of the tenth conductive member CM10 is connected to a low potential, and FIG. 7B shows the path of the current when the second terminal TM2 of the second conductive member CM2 is connected to a high potential and the tenth terminal TM10 of the tenth conductive member CM10 is connected to a low potential. The following description relates to the path of the current flowing through the first wire SA1 or the second wire SA2, but may also be applied to the path of the current flowing through the third wire SA3 or the fourth wire SA4, the path of the current flowing through the fifth wire SA5 or the sixth wire SA6, and the path of the current flowing through the seventh wire SA7 or the eighth wire SA8.

第１導電部材ＣＭ１の第１端子部ＴＭ１が高電位に接続され、第１０導電部材ＣＭ１０の第１０端子部ＴＭ１０が低電位に接続されると、電流は、図７Ａの矢印ＡＲ１で示すように第１導電部材ＣＭ１を通って第１端子部ＴＭ１から第１固定側ターミナルプレート５Ｆ１に流れる。その後、電流は、矢印ＡＲ２で示すように第１固定側ターミナルプレート５Ｆ１を通り、矢印ＡＲ３で示すように第１ワイヤＳＡ１を通り、更に、矢印ＡＲ４で示すように第１可動側ターミナルプレート５Ｍ１を通る。その後、電流は、矢印ＡＲ５及び矢印ＡＲ６で示すように第１板ばね６Ａの第３部分６Ａ３、第５部分６Ａ５、及び第２部分６Ａ２を通り、そして、矢印ＡＲ７で示すように第１０導電部材ＣＭ１０を通って第１０端子部ＴＭ１０に流れる。 When the first terminal TM1 of the first conductive member CM1 is connected to a high potential and the tenth terminal TM10 of the tenth conductive member CM10 is connected to a low potential, a current flows from the first terminal TM1 through the first conductive member CM1 to the first fixed terminal plate 5F1 as shown by the arrow AR1 in FIG. 7A. The current then passes through the first fixed terminal plate 5F1 as shown by the arrow AR2, the first wire SA1 as shown by the arrow AR3, and the first movable terminal plate 5M1 as shown by the arrow AR4. The current then passes through the third portion 6A3, the fifth portion 6A5, and the second portion 6A2 of the first leaf spring 6A as shown by the arrows AR5 and AR6, and then flows through the tenth conductive member CM10 to the tenth terminal TM10 as shown by the arrow AR7.

第２導電部材ＣＭ２の第２端子部ＴＭ２が高電位に接続され、第１０導電部材ＣＭ１０の第１０端子部ＴＭ１０が低電位に接続されると、電流は、図７Ｂの矢印ＡＲ１１で示すように第２導電部材ＣＭ２を通って第２端子部ＴＭ２から第２固定側ターミナルプレート５Ｆ２に流れる。その後、電流は、矢印ＡＲ１２で示すように第２固定側ターミナルプレート５Ｆ２を通り、矢印ＡＲ１３で示すように第２ワイヤＳＡ２を通り、更に、矢印ＡＲ１４で示すように第１可動側ターミナルプレート５Ｍ１を通る。その後、電流は、矢印ＡＲ１５及び矢印ＡＲ１６で示すように第１板ばね６Ａの第３部分６Ａ３、第５部分６Ａ５、及び第２部分６Ａ２を通り、そして、矢印ＡＲ１７で示すように第１０導電部材ＣＭ１０を通って第１０端子部ＴＭ１０に流れる。 When the second terminal TM2 of the second conductive member CM2 is connected to a high potential and the tenth terminal TM10 of the tenth conductive member CM10 is connected to a low potential, a current flows from the second terminal TM2 through the second conductive member CM2 to the second fixed terminal plate 5F2 as shown by the arrow AR11 in FIG. 7B. The current then passes through the second fixed terminal plate 5F2 as shown by the arrow AR12, the second wire SA2 as shown by the arrow AR13, and the first movable terminal plate 5M1 as shown by the arrow AR14. The current then passes through the third portion 6A3, the fifth portion 6A5, and the second portion 6A2 of the first leaf spring 6A as shown by the arrows AR15 and AR16, and then flows through the tenth conductive member CM10 to the tenth terminal TM10 as shown by the arrow AR17.

第１導電部材ＣＭ１の第１端子部ＴＭ１が高電位に接続された場合、及び、第２導電部材ＣＭ２の第２端子部ＴＭ２が高電位に接続された場合の何れにおいても、第１可動側ターミナルプレート５Ｍ１から第１０端子部ＴＭ１０へ流れる電流の経路は同じである。 When the first terminal TM1 of the first conductive member CM1 is connected to a high potential, and when the second terminal TM2 of the second conductive member CM2 is connected to a high potential, the path of the current flowing from the first movable terminal plate 5M1 to the tenth terminal TM10 is the same.

上述のようなレンズ駆動装置１０１の外部にある制御装置は、第１導電部材ＣＭ１～第１０導電部材ＣＭ１０のそれぞれの端子部に印加される電圧を制御することにより、第１ワイヤＳＡ１～第８ワイヤＳＡ８のそれぞれの収縮を制御できる。なお、制御装置は、レンズ駆動装置１０１内に配置されていてもよい。また、制御装置は、レンズ駆動装置１０１の構成要素であってもよい。 The control device external to the lens driving device 101 as described above can control the contraction of each of the first wire SA1 to the eighth wire SA8 by controlling the voltage applied to each of the terminal portions of the first conductive member CM1 to the tenth conductive member CM10. The control device may be disposed within the lens driving device 101. The control device may also be a component of the lens driving device 101.

略直方体形状を有するレンズ駆動装置１０１は、例えば、撮像素子（図示せず。）を実装した外部基板（図示せず。）の上に取り付けられる。カメラモジュールは、例えば、外部基板と、レンズ駆動装置１０１と、レンズ保持部材２に装着されたレンズ体と、レンズ体に対向するように外部基板に実装された撮像素子とで構成される。カメラモジュールは、制御装置を含んでいてもよい。 The lens driving device 101, which has a roughly rectangular parallelepiped shape, is mounted, for example, on an external board (not shown) on which an imaging element (not shown) is mounted. The camera module is composed, for example, of an external board, the lens driving device 101, a lens body attached to the lens holding member 2, and an imaging element mounted on the external board so as to face the lens body. The camera module may include a control device.

制御装置は、例えば、駆動機構ＭＫとしての形状記憶合金ワイヤＳＡの収縮による光軸ＪＤに平行な方向に沿った駆動力を利用し、撮像素子のＺ１側（被写体側）において、光軸ＪＤに平行な方向に沿ってレンズ保持部材２を移動させてもよい。そして、このようにレンズ保持部材２を移動させることにより、制御装置は、レンズ調整機能の一つである自動焦点調整機能を実現してもよい。具体的には、制御装置は、撮像素子から離れる方向にレンズ保持部材２を移動させてマクロ撮影を可能にし、撮像素子に近づく方向にレンズ保持部材２を移動させて無限遠撮影を可能にしてもよい。 The control device may, for example, use a driving force parallel to the optical axis JD caused by the contraction of the shape memory alloy wire SA as the driving mechanism MK to move the lens holding member 2 along the direction parallel to the optical axis JD on the Z1 side (subject side) of the image sensor. By moving the lens holding member 2 in this manner, the control device may realize an autofocus adjustment function, which is one of the lens adjustment functions. Specifically, the control device may move the lens holding member 2 away from the image sensor to enable macro photography, and move the lens holding member 2 toward the image sensor to enable infinity photography.

また、制御装置は、複数の形状記憶合金ワイヤＳＡに流れる電流を制御することによって、光軸ＪＤと交差する方向にレンズ保持部材２を移動させてもよい。これにより、制御装置は、手振れ補正機能を実現してもよい。 The control device may also move the lens holding member 2 in a direction intersecting the optical axis JD by controlling the current flowing through the multiple shape memory alloy wires SA. In this way, the control device may achieve an image stabilization function.

次に、図８Ａ及び図８Ｂ、並びに図９Ａ及び図９Ｂを参照し、固定側金属部材５Ｆ（固定側ターミナルプレート）と導電部材ＣＭとを接続する接続構造の一例について説明する。図８Ａ及び図８Ｂ、並びに図９Ａ及び図９Ｂは、固定側金属部材５Ｆ（固定側ターミナルプレート）と導電部材ＣＭとを接続する接続構造の一例を示す図である。具体的には、図８Ａは、固定側金属部材５Ｆ（固定側ターミナルプレート）が取り付けられたベース部材１８の全体の斜視図である。図８Ｂは、図８Ａに示す破線で囲まれた範囲Ｒ１をＹ１側からみたときの拡大側面図である。図９Ａは、図８Ｂに示す破線で囲まれた範囲Ｒ２をＺ２側からみたときの拡大底面図である。図９Ｂは、第１固定側ターミナルプレート５Ｆ１の接続部ＣＴ１と第１導電部材ＣＭ１の第１接続部ＥＤ１とを前側（Ｘ１側）からみたときの接続部ＣＴ１及び第１接続部ＥＤ１の図である。なお、図８Ａ及び図８ｂ、並びに図９Ａ及び図９Ｂでは、明瞭化のため、固定側金属部材５Ｆ（固定側ターミナルプレート）には粗いドットパターンが付され、導電部材ＣＭには細かいドットパターンが付されている。 Next, referring to Figures 8A and 8B, and Figures 9A and 9B, an example of a connection structure connecting the fixed side metal member 5F (fixed side terminal plate) and the conductive member CM will be described. Figures 8A and 8B, and Figures 9A and 9B are diagrams showing an example of a connection structure connecting the fixed side metal member 5F (fixed side terminal plate) and the conductive member CM. Specifically, Figure 8A is a perspective view of the entire base member 18 to which the fixed side metal member 5F (fixed side terminal plate) is attached. Figure 8B is an enlarged side view of the range R1 surrounded by the dashed line shown in Figure 8A when viewed from the Y1 side. Figure 9A is an enlarged bottom view of the range R2 surrounded by the dashed line shown in Figure 8B when viewed from the Z2 side. Figure 9B is a view of the connection part CT1 of the first fixed side terminal plate 5F1 and the first connection part ED1 of the first conductive member CM1 when viewed from the front side (X1 side). In addition, in Figures 8A and 8b, and Figures 9A and 9B, for clarity, a coarse dot pattern is applied to the fixed metal member 5F (fixed terminal plate) and a fine dot pattern is applied to the conductive member CM.

図８Ｂ及び図９Ａに示すように、第１固定側ターミナルプレート５Ｆ１は、ベース部材１８の第１固定側台座部１８Ｄ１のＹ１側の側壁（右側取付面）に光硬化型接着剤によって取り付けられている。そして、第１固定側ターミナルプレート５Ｆ１の接続部ＣＴ１は、接合材ＳＤを介して第１導電部材ＣＭ１の第１接続部ＥＤ１に接合されている。接合材ＳＤは、例えば、半田又は導電性接着剤等である。なお、図８Ｂ、図９Ａ及び図９Ｂでは、明瞭化のため、接合材ＳＤにはクロスパターンが付されている。 As shown in Figures 8B and 9A, the first fixed side terminal plate 5F1 is attached to the Y1 side wall (right mounting surface) of the first fixed side pedestal portion 18D1 of the base member 18 with a photocurable adhesive. The connection portion CT1 of the first fixed side terminal plate 5F1 is joined to the first connection portion ED1 of the first conductive member CM1 via a bonding material SD. The bonding material SD is, for example, solder or a conductive adhesive. Note that in Figures 8B, 9A, and 9B, a cross pattern is applied to the bonding material SD for clarity.

同様に、第２固定側ターミナルプレート５Ｆ２は、ベース部材１８における第１固定側台座部１８Ｄ１のＹ１側の側壁（右側取付面）に光硬化型接着剤によって取り付けられている。そして、第２固定側ターミナルプレート５Ｆ２の接続部ＣＴ２は、接合材ＳＤを介して第２導電部材ＣＭ２の第２接続部ＥＤ２に接合されている。 Similarly, the second fixed side terminal plate 5F2 is attached to the Y1 side wall (right mounting surface) of the first fixed side pedestal portion 18D1 of the base member 18 with a photocurable adhesive. The connection portion CT2 of the second fixed side terminal plate 5F2 is joined to the second connection portion ED2 of the second conductive member CM2 via the bonding material SD.

接続部ＣＴ１は、図９Ａ及び図９Ｂに示すように、第１接続部ＥＤ１のＹ１側（右側）の端面ＥＰの少なくとも一部を覆うように配置されている。具体的には、第１固定側ターミナルプレート５Ｆ１は、図９Ｂに示すように、接続部ＣＴ１が第１接続部ＥＤ１の外側（Ｙ１側）に位置するように接続部ＣＴ１の付け根ＲＴのところで外側（Ｙ１側）に曲げられている。接続部ＣＴ２についても同様である。 As shown in Figures 9A and 9B, the connection part CT1 is arranged so as to cover at least a portion of the end face EP on the Y1 side (right side) of the first connection part ED1. Specifically, as shown in Figure 9B, the first fixed side terminal plate 5F1 is bent outward (towards the Y1 side) at the base RT of the connection part CT1 so that the connection part CT1 is located outside (towards the Y1 side) of the first connection part ED1. The same is true for the connection part CT2.

この配置は、少なくとも接続部ＣＴ１の下面（Ｚ２側の面）と第１接続部ＥＤ１の外側（Ｙ１側）の面とに接合材ＳＤが付着できるようにするため、接続部ＣＴ１と第１接続部ＥＤ１との間の接合材ＳＤによる接続強度を高めることができる。典型的には、この配置は、第１接続部ＥＤ１を構成している複数の面と接続部ＣＴ１を構成している複数の面とに接合材ＳＤが付着できるようにするため、接続部ＣＴ１と第１接続部ＥＤ１との間の接合材ＳＤによる接続強度を高めることができる。接続部ＣＴ２と第２接続部ＥＤ２との間の接合材ＳＤによる接続強度についても同様である。 This arrangement allows the bonding material SD to adhere to at least the underside (Z2 side) of connection part CT1 and the outer (Y1 side) surface of first connection part ED1, thereby increasing the connection strength between connection part CT1 and first connection part ED1 through bonding material SD. Typically, this arrangement allows the bonding material SD to adhere to multiple surfaces constituting first connection part ED1 and multiple surfaces constituting connection part CT1, thereby increasing the connection strength between connection part CT1 and first connection part ED1 through bonding material SD. The same applies to the connection strength between connection part CT2 and second connection part ED2 through bonding material SD.

また、図９Ａに示すように、第１接続部ＥＤ１の先端には凹部ＲＳ１が形成されている。この構成は、接続部ＣＴ１と第１接続部ＥＤ１との間に接合材ＳＤが入り込み易くするため、接続部ＣＴ１と第１接続部ＥＤ１との間の接合材ＳＤによる接続強度を高めることができる。先端に凹部ＲＳ２が形成された第２接続部ＥＤ２と接続部ＣＴ２との間の接合材ＳＤによる接続強度についても同様である。 Also, as shown in FIG. 9A, a recess RS1 is formed at the tip of the first connection part ED1. This configuration makes it easier for the bonding material SD to enter between the connection part CT1 and the first connection part ED1, thereby increasing the connection strength between the connection part CT1 and the first connection part ED1 by the bonding material SD. The same is true for the connection strength between the second connection part ED2, which has a recess RS2 formed at its tip, and the connection part CT2 by the bonding material SD.

また、この配置は、メッキが施されていない第１接続部ＥＤ１の端面ＥＰ（Ｙ１側の面）のみと接続部ＣＴ１とが接合材ＳＤによって接合されてしまうのを防止できる。第２接続部ＥＤ２と接続部ＣＴ２との間の接合についても同様である。 This arrangement also prevents the connection part CT1 from being joined with the joining material SD only to the end face EP (the face on the Y1 side) of the first connection part ED1, which is not plated. The same applies to the joining between the second connection part ED2 and the connection part CT2.

次に、図１０を参照し、形状記憶合金ワイヤＳＡへの非通電時における、ベース部材１８に対するレンズ保持部材２の動きを規制するための構成について説明する。図１０は、レンズ保持部材２、上側カバー部材４Ｕ、及びベース部材１８の斜視図である。 Next, referring to FIG. 10, we will explain the configuration for restricting the movement of the lens holding member 2 relative to the base member 18 when the shape memory alloy wire SA is not energized. FIG. 10 is a perspective view of the lens holding member 2, the upper cover member 4U, and the base member 18.

レンズ保持部材２は、図１０に示すように、光軸方向に延びるとともにレンズ体が内部に収容される筒状部１２と、上側カバー部材４Ｕの角部４Ｅに対応する位置に、筒状部１２から角部４Ｅに向かって突出する可動側台座部２Ｄ及び突設部２Ｓとを有する。 As shown in FIG. 10, the lens holding member 2 has a cylindrical portion 12 that extends in the optical axis direction and houses the lens body therein, and a movable base portion 2D and a protruding portion 2S that protrude from the cylindrical portion 12 toward the corner portion 4E at a position corresponding to the corner portion 4E of the upper cover member 4U.

具体的には、上側カバー部材４Ｕは、四つの角部４Ｅを有する。そして、四つの角部４Ｅは、第１側板部４Ａ１と第４側板部４Ａ４との間に配置される第１角部４Ｅ１と、第１側板部４Ａ１と第２側板部４Ａ２との間に配置される第２角部４Ｅ２と、第２側板部４Ａ２と第３側板部４Ａ３との間に配置される第３角部４Ｅ３と、第３側板部４Ａ３と第４側板部４Ａ４との間に配置される第４角部４Ｅ４と、を含む。 Specifically, the upper cover member 4U has four corners 4E. The four corners 4E include a first corner 4E1 disposed between the first side plate portion 4A1 and the fourth side plate portion 4A4, a second corner 4E2 disposed between the first side plate portion 4A1 and the second side plate portion 4A2, a third corner 4E3 disposed between the second side plate portion 4A2 and the third side plate portion 4A3, and a fourth corner 4E4 disposed between the third side plate portion 4A3 and the fourth side plate portion 4A4.

レンズ保持部材２は、筒状部１２から第１角部４Ｅ１に向かって突出する第２可動側台座部２Ｄ２と、筒状部１２から第２角部４Ｅ２に向かって突出する第１突設部２Ｓ１と、筒状部１２から第３角部４Ｅ３に向かって突出する第１可動側台座部２Ｄ１と、筒状部１２から第４角部４Ｅ４に向かって突出する第２突設部２Ｓ２と、を有する。 The lens holding member 2 has a second movable side base portion 2D2 that protrudes from the cylindrical portion 12 toward the first corner portion 4E1, a first protruding portion 2S1 that protrudes from the cylindrical portion 12 toward the second corner portion 4E2, the first movable side base portion 2D1 that protrudes from the cylindrical portion 12 toward the third corner portion 4E3, and a second protruding portion 2S2 that protrudes from the cylindrical portion 12 toward the fourth corner portion 4E4.

突設部２Ｓには、上方（Ｚ１方向）に向かって開口する収容部ＨＲが形成されている。そして、収容部ＨＲには第１磁性部材１０が収容され、接着剤によって固定されている。具体的には、第１突設部２Ｓ１には、上方に向かって開口する第１収容部ＨＲ１が形成され、第２突設部２Ｓ２には、上方に向かって開口する第２収容部ＨＲ２が形成されている。そして、第１収容部ＨＲ１には第１磁石１０Ａが収容され、第２収容部ＨＲ２には第２磁石１０Ｂが収容されている。 The protruding portion 2S is formed with a housing portion HR that opens upward (Z1 direction). The first magnetic member 10 is housed in the housing portion HR and fixed with adhesive. Specifically, the first protruding portion 2S1 is formed with a first housing portion HR1 that opens upward, and the second protruding portion 2S2 is formed with a second housing portion HR2 that opens upward. The first housing portion HR1 houses the first magnet 10A, and the second housing portion HR2 houses the second magnet 10B.

第１磁性部材１０は、ベース部材１８に取り付けられる第２磁性部材ＭＧ（図１２Ａ及び図１２Ｂ参照。）との間で磁気的な吸引力を発生させるための部材である。図１０に示す例では、第１磁性部材１０は、第１磁石１０Ａ及び第２磁石１０Ｂを含む。第１磁石１０Ａ及び第２磁石１０Ｂは何れも二極永久磁石である。但し、第１磁性部材１０は、第２磁性部材ＭＧとの間で磁気的な吸引力を発生させることができるのであれば磁石でなくてもよい。この場合、第１磁性部材１０は、例えば、磁性金属又は磁性樹脂材料等であってもよい。また、第１磁性部材１０は、インサート成形等によってレンズ保持部材２に埋め込まれていてもよく、レンズ保持部材２に貼り付けられていてもよい。 The first magnetic member 10 is a member for generating a magnetic attraction force between the first magnetic member 10 and the second magnetic member MG (see FIG. 12A and FIG. 12B) attached to the base member 18. In the example shown in FIG. 10, the first magnetic member 10 includes a first magnet 10A and a second magnet 10B. Both the first magnet 10A and the second magnet 10B are two-pole permanent magnets. However, the first magnetic member 10 does not have to be a magnet as long as it can generate a magnetic attraction force between the first magnetic member 10 and the second magnetic member MG. In this case, the first magnetic member 10 may be, for example, a magnetic metal or a magnetic resin material. The first magnetic member 10 may be embedded in the lens holding member 2 by insert molding or the like, or may be attached to the lens holding member 2.

ベース部材１８は、上側カバー部材４Ｕの角部４Ｅに対応する位置に、上方に向かって突出する固定側台座部１８Ｄ及びストッパ用凸部１８Ｓを有する。ストッパ用凸部１８Ｓは、第１ストッパ用凸部１８Ｓ１及び第２ストッパ用凸部１８Ｓ２を含む。具体的には、ベース部材１８は、第１角部４Ｅ１の近傍に設けられる第２ストッパ用凸部１８Ｓ２と、第２角部４Ｅ２の近傍に設けられる第１固定側台座部１８Ｄ１と、第３角部４Ｅ３の近傍に設けられる第１ストッパ用凸部１８Ｓ１と、第４角部４Ｅ４の近傍に設けられる第２固定側台座部１８Ｄ２と、を有する。 The base member 18 has a fixed side pedestal portion 18D and a stopper protrusion portion 18S that protrude upward at a position corresponding to the corner portion 4E of the upper cover member 4U. The stopper protrusion portion 18S includes a first stopper protrusion portion 18S1 and a second stopper protrusion portion 18S2. Specifically, the base member 18 has a second stopper protrusion portion 18S2 provided near the first corner portion 4E1, a first fixed side pedestal portion 18D1 provided near the second corner portion 4E2, a first stopper protrusion portion 18S1 provided near the third corner portion 4E3, and a second fixed side pedestal portion 18D2 provided near the fourth corner portion 4E4.

固定側台座部１８Ｄには、上方（Ｚ１方向）及び内方（光軸ＪＤに近づく方向）に向かって開口するストッパ用凹部ＳＢが形成されている。具体的には、第１固定側台座部１８Ｄ１には、上方及び内方に向かって開口する第１ストッパ用凹部ＳＢ１が形成され、第２固定側台座部１８Ｄ２には、上方及び内方に向かって開口する第２ストッパ用凹部ＳＢ２が形成されている。そして、ストッパ用凹部ＳＢにはストッパ用凸部として機能する突設部２Ｓが収容される。 The fixed side base portion 18D is formed with a stopper recess SB that opens upward (in the Z1 direction) and inward (toward the optical axis JD). Specifically, the first fixed side base portion 18D1 is formed with a first stopper recess SB1 that opens upward and inward, and the second fixed side base portion 18D2 is formed with a second stopper recess SB2 that opens upward and inward. The stopper recess SB accommodates a protruding portion 2S that functions as a stopper protrusion.

レンズ保持部材２には、図１１Ａ～図１１Ｃに示すように、可動側台座部２Ｄの下面（Ｚ２側の面）にストッパ用凹部ＣＶが形成されている。図１１Ａ～図１１Ｃは、レンズ保持部材２の詳細図である。具体的には、図１１Ａは、レンズ保持部材２の底面図である。図１１Ｂは、レンズ保持部材２の底面斜視図である。図１１Ｃは、図１１Ｂに示す破線で囲まれた範囲Ｒ３の拡大図である。なお、図１１Ａ～図１１Ｃでは、明瞭化のため、ストッパ用凹部ＣＶにドットパターンが付されている。 As shown in Figs. 11A to 11C, the lens holding member 2 has a stopper recess CV formed on the underside (Z2 side) of the movable base portion 2D. Figs. 11A to 11C are detailed views of the lens holding member 2. Specifically, Fig. 11A is a bottom view of the lens holding member 2. Fig. 11B is a bottom perspective view of the lens holding member 2. Fig. 11C is an enlarged view of the area R3 surrounded by the dashed line shown in Fig. 11B. Note that in Figs. 11A to 11C, a dot pattern is added to the stopper recess CV for clarity.

具体的には、第１可動側台座部２Ｄ１の下面には第１ストッパ用凹部ＣＶ１が形成され、第２可動側台座部２Ｄ２の下面には第２ストッパ用凹部ＣＶ２が形成されている。 Specifically, a first stopper recess CV1 is formed on the underside of the first movable base portion 2D1, and a second stopper recess CV2 is formed on the underside of the second movable base portion 2D2.

ストッパ用凹部ＣＶは、上述のように、第１ストッパ用凹部ＣＶ１及び第２ストッパ用凹部ＣＶ２を有する。そして、ストッパ用凹部ＣＶは、ベース部材１８に形成されたストッパ用凸部１８Ｓ（図１０参照。）を非接触で受け入れるように構成されている。ストッパ用凸部１８Ｓは、上述のように、第１ストッパ用凸部１８Ｓ１及び第２ストッパ用凸部１８Ｓ２を含む。 As described above, the stopper recess CV has a first stopper recess CV1 and a second stopper recess CV2. The stopper recess CV is configured to receive the stopper protrusion 18S (see FIG. 10) formed on the base member 18 without contact. The stopper protrusion 18S includes a first stopper protrusion 18S1 and a second stopper protrusion 18S2, as described above.

ストッパ用凹部ＣＶは、ストッパ用凸部１８Ｓと協働してレンズ保持部材２の過度の動きを制限するように構成されている。具体的には、ストッパ用凹部ＣＶは、レンズ保持部材２の動きが過度に大きくなったときにストッパ用凸部１８Ｓと接触してレンズ保持部材２の過度の動きを制限するように構成されている。レンズ保持部材２の過度の動きは、レンズ保持部材２の光軸ＪＤ回りの過度の回転、Ｘ軸方向におけるレンズ保持部材２の過度の並進、及び、Ｙ軸方向におけるレンズ保持部材２の過度の並進等の少なくとも一つを含む。 The stopper recess CV is configured to cooperate with the stopper protrusion 18S to limit excessive movement of the lens holding member 2. Specifically, the stopper recess CV is configured to come into contact with the stopper protrusion 18S to limit excessive movement of the lens holding member 2 when the movement of the lens holding member 2 becomes excessively large. The excessive movement of the lens holding member 2 includes at least one of excessive rotation about the optical axis JD of the lens holding member 2, excessive translation of the lens holding member 2 in the X-axis direction, and excessive translation of the lens holding member 2 in the Y-axis direction.

より具体的には、第１ストッパ用凹部ＣＶ１は、初期状態において第１ストッパ用凸部１８Ｓ１を非接触で受け入れるように構成され、第２ストッパ用凹部ＣＶ２は、初期状態において第２ストッパ用凸部１８Ｓ２を非接触で受け入れるように構成されている。レンズ駆動装置１０１の初期状態は、例えば、形状記憶合金ワイヤＳＡへの非通電時のときのレンズ駆動装置１０１の状態を意味する。 More specifically, the first stopper recess CV1 is configured to receive the first stopper protrusion 18S1 in a non-contact manner in the initial state, and the second stopper recess CV2 is configured to receive the second stopper protrusion 18S2 in a non-contact manner in the initial state. The initial state of the lens driving device 101 means, for example, the state of the lens driving device 101 when no current is applied to the shape memory alloy wire SA.

また、ベース部材１８のストッパ用凹部ＳＢは、初期状態においてレンズ保持部材２の突設部２Ｓ（ストッパ用凸部）を非接触で受け入れるように構成されている。そして、ストッパ用凹部ＳＢは、ストッパ用凸部（突設部２Ｓ）と協働してレンズ保持部材２の過度の動きを制限するように構成されている。具体的には、ストッパ用凹部ＳＢは、レンズ保持部材２の動きが過度に大きくなったときにストッパ用凸部（突設部２Ｓ）と接触してレンズ保持部材２の過度の動きを制限するように構成されている。 The stopper recess SB of the base member 18 is configured to receive the protrusion 2S (stopper protrusion) of the lens holding member 2 without contact in the initial state. The stopper recess SB is configured to cooperate with the stopper protrusion (protrusion 2S) to limit excessive movement of the lens holding member 2. Specifically, the stopper recess SB is configured to come into contact with the stopper protrusion (protrusion 2S) to limit excessive movement of the lens holding member 2 when the movement of the lens holding member 2 becomes excessively large.

より具体的には、ストッパ用凹部ＳＢは、第１固定側台座部１８Ｄ１の内側に形成された第１ストッパ用凹部ＳＢ１と、第２固定側台座部１８Ｄ２の内側に形成された第２ストッパ用凹部ＳＢ２とを含む。そして、第１ストッパ用凹部ＳＢ１は、初期状態において第１ストッパ用凸部（第１突設部２Ｓ１）を非接触で受け入れるように構成され、第２ストッパ用凹部ＳＢ２は、初期状態において第２ストッパ用凸部（第２突設部２Ｓ２）を非接触で受け入れるように構成されている。 More specifically, the stopper recess SB includes a first stopper recess SB1 formed on the inside of the first fixed side base portion 18D1 and a second stopper recess SB2 formed on the inside of the second fixed side base portion 18D2. The first stopper recess SB1 is configured to receive the first stopper convex portion (first protruding portion 2S1) in a non-contact manner in the initial state, and the second stopper recess SB2 is configured to receive the second stopper convex portion (second protruding portion 2S2) in a non-contact manner in the initial state.

このように、レンズ保持部材２におけるストッパ用凹部ＣＶ（可動側台座部２Ｄ）及びストッパ用凸部（突設部２Ｓ）、並びに、ベース部材１８におけるストッパ用凹部ＳＢ（固定側台座部１８Ｄ）及びストッパ用凸部１８Ｓは、レンズ保持部材２の過度の動きを制限するストッパ部ＳＴを構成している。 In this way, the stopper recess CV (movable base portion 2D) and stopper protrusion (protrusion portion 2S) in the lens holding member 2, and the stopper recess SB (fixed base portion 18D) and stopper protrusion 18S in the base member 18, form the stopper portion ST that limits excessive movement of the lens holding member 2.

具体的には、ストッパ部ＳＴは、図１０に示すように、第１ストッパ部ＳＴ１～第４ストッパ部ＳＴ４を含む。第１ストッパ部ＳＴ１は、第１突設部２Ｓ１と第１固定側台座部１８Ｄ１との組み合わせで構成され、第２ストッパ部ＳＴ２は、第２突設部２Ｓ２と第２固定側台座部１８Ｄ２との組み合わせで構成され、第３ストッパ部ＳＴ３は、第１可動側台座部２Ｄ１と第１ストッパ用凸部１８Ｓ１との組み合わせで構成され、第４ストッパ部ＳＴ４は、第２可動側台座部２Ｄ２と第２ストッパ用凸部１８Ｓ２との組み合わせで構成されている。 Specifically, as shown in FIG. 10, the stopper portion ST includes a first stopper portion ST1 to a fourth stopper portion ST4. The first stopper portion ST1 is formed by a combination of the first protrusion portion 2S1 and the first fixed side base portion 18D1, the second stopper portion ST2 is formed by a combination of the second protrusion portion 2S2 and the second fixed side base portion 18D2, the third stopper portion ST3 is formed by a combination of the first movable side base portion 2D1 and the first stopper convex portion 18S1, and the fourth stopper portion ST4 is formed by a combination of the second movable side base portion 2D2 and the second stopper convex portion 18S2.

また、レンズ保持部材２の可動側台座部２Ｄは、図１１Ａ～図１１Ｃに示すように、可動側金属部材５Ｍが取り付けられる取付面ＥＷを有する。具体的には、第１可動側台座部２Ｄ１のＹ１側の側壁には、第１可動側ターミナルプレート５Ｍ１が取り付けられる第１取付面ＥＷ１（右側取付面）が形成され、第１可動側台座部２Ｄ１のＸ２側の側壁には、第２可動側ターミナルプレート５Ｍ２が取り付けられる第２取付面ＥＷ２（後側取付面）が形成されている。また、第２可動側台座部２Ｄ２のＸ１側の側壁には、第３可動側ターミナルプレート５Ｍ３が取り付けられる第３取付面ＥＷ３（前側取付面）が形成され、第２可動側台座部２Ｄ２のＹ２側の側壁には、第４可動側ターミナルプレート５Ｍ４が取り付けられる第４取付面ＥＷ４（左側取付面）が形成されている。 The movable side base portion 2D of the lens holding member 2 has an attachment surface EW to which the movable side metal member 5M is attached, as shown in Figs. 11A to 11C. Specifically, the first movable side base portion 2D1 has a first attachment surface EW1 (right attachment surface) on the Y1 side wall to which the first movable side terminal plate 5M1 is attached, and the first movable side base portion 2D1 has a second attachment surface EW2 (rear attachment surface) on which the second movable side terminal plate 5M2 is attached. The second movable side base portion 2D2 has a third attachment surface EW3 (front attachment surface) on which the third movable side terminal plate 5M3 is attached, and the second movable side base portion 2D2 has a fourth attachment surface EW4 (left attachment surface) on which the fourth movable side terminal plate 5M4 is attached, formed on the Y2 side wall.

次に、図１２Ａ及び図１２Ｂを参照し、形状記憶合金ワイヤＳＡの非通電時における第１磁性部材１０と第２磁性部材ＭＧとの位置関係について説明する。図１２Ａ及び図１２Ｂは、形状記憶合金ワイヤＳＡの非通電時における、レンズ保持部材２に取り付けられている第１磁性部材１０と、ベース部材１８に埋設されている導電部材ＣＭに含まれる第２磁性部材ＭＧとの位置関係を示す。具体的には、図１２Ａは、第１磁性部材１０及び導電部材ＣＭの斜視図であり、図１２Ｂは、導電部材ＣＭの上面図である。なお、図１２Ａ及び図１２Ｂでは、明瞭化のため、第１磁性部材１０及び導電部材ＣＭ以外の部材の図示が省略されている。また、図１２Ａ及び図１２Ｂでは、明瞭化のため、ベース部材１８に埋設されている導電部材ＣＭの一部である第２磁性部材ＭＧにドットパターンが付されている。また、図１２Ｂでは、明瞭化のため、第１磁性部材１０の輪郭が点線で示されている。 Next, referring to Figures 12A and 12B, the positional relationship between the first magnetic member 10 and the second magnetic member MG when the shape memory alloy wire SA is not energized will be described. Figures 12A and 12B show the positional relationship between the first magnetic member 10 attached to the lens holding member 2 and the second magnetic member MG included in the conductive member CM embedded in the base member 18 when the shape memory alloy wire SA is not energized. Specifically, Figure 12A is a perspective view of the first magnetic member 10 and the conductive member CM, and Figure 12B is a top view of the conductive member CM. Note that in Figures 12A and 12B, for clarity, the illustration of members other than the first magnetic member 10 and the conductive member CM is omitted. Also, in Figures 12A and 12B, for clarity, a dot pattern is applied to the second magnetic member MG, which is part of the conductive member CM embedded in the base member 18. Also, in FIG. 12B, for clarity, the outline of the first magnetic member 10 is shown with a dotted line.

第２磁性部材ＭＧは、レンズ保持部材２に取り付けられる第１磁性部材１０との間で磁気的な吸引力を発生させるための部材である。図１２Ａ及び図１２Ｂに示す例では、第２磁性部材ＭＧは、第１金属板ＭＧ１及び第２金属板ＭＧ２を含む。第１金属板ＭＧ１及び第２金属板ＭＧ２は何れも磁性金属で形成されている。具体的には、第１金属板ＭＧ１は、第２導電部材ＣＭ２の一部として形成され、第２金属板ＭＧ２は、第８導電部材ＣＭ８の一部として形成されている。但し、第２磁性部材ＭＧは、第１磁性部材１０との間で磁気的な吸引力を発生させることができるのであれば磁性金属でなくてもよい。この場合、第２磁性部材ＭＧは磁石であってもよい。また、第２磁性部材ＭＧは、導電部材ＣＭから独立した部材として構成されていてもよい。この場合、導電部材ＣＭは、望ましくは、非磁性金属等の非磁性材料で形成される。また、第２磁性部材ＭＧは、ベース部材１８に埋設されている必要はなく、ベース部材１８に貼り付けられていてもよい。 The second magnetic member MG is a member for generating a magnetic attraction force between the second magnetic member MG and the first magnetic member 10 attached to the lens holding member 2. In the example shown in FIG. 12A and FIG. 12B, the second magnetic member MG includes a first metal plate MG1 and a second metal plate MG2. The first metal plate MG1 and the second metal plate MG2 are both formed of magnetic metal. Specifically, the first metal plate MG1 is formed as a part of the second conductive member CM2, and the second metal plate MG2 is formed as a part of the eighth conductive member CM8. However, the second magnetic member MG does not have to be a magnetic metal as long as it can generate a magnetic attraction force between the second magnetic member MG and the first magnetic member 10. In this case, the second magnetic member MG may be a magnet. The second magnetic member MG may also be configured as a member independent of the conductive member CM. In this case, the conductive member CM is preferably formed of a non-magnetic material such as a non-magnetic metal. Furthermore, the second magnetic member MG does not need to be embedded in the base member 18, but may be attached to the base member 18.

形状記憶合金ワイヤＳＡの非通電時では、図１２Ａ及び図１２Ｂに示すように、第１磁性部材１０は、第２磁性部材ＭＧから所定距離だけ離れた状態で、第２磁性部材ＭＧの真上に位置するように、レンズ保持部材２の突設部２Ｓに形成された収容部ＨＲ内に配置されている。 When the shape memory alloy wire SA is not energized, as shown in Figures 12A and 12B, the first magnetic member 10 is disposed in the housing portion HR formed in the protruding portion 2S of the lens holding member 2 so as to be located directly above the second magnetic member MG and at a predetermined distance from the second magnetic member MG.

そして、図１２Ｂに示すように、第１磁性部材１０及び第２磁性部材ＭＧは、第２磁性部材ＭＧに対向する第１磁性部材１０の上側対向面ＣＳＵの面積が、第１磁性部材１０に対向する第２磁性部材ＭＧの下側対向面ＣＳＬの面積にほぼ等しくなるように構成されている。上側対向面ＣＳＵの面積と下側対向面ＣＳＬの面積とが顕著に異なる場合、第１磁性部材１０と第２磁性部材ＭＧとの間に生成される磁気的な吸引力によって第１磁性部材１０が第２磁性部材ＭＧに引き寄せられて静止するときの第１磁性部材１０と第２磁性部材ＭＧとの間の位置関係は、ばらついてしまうためである。 As shown in FIG. 12B, the first magnetic member 10 and the second magnetic member MG are configured so that the area of the upper opposing surface CSU of the first magnetic member 10 facing the second magnetic member MG is approximately equal to the area of the lower opposing surface CSL of the second magnetic member MG facing the first magnetic member 10. If the area of the upper opposing surface CSU and the area of the lower opposing surface CSL are significantly different, the positional relationship between the first magnetic member 10 and the second magnetic member MG will vary when the first magnetic member 10 is attracted to the second magnetic member MG by the magnetic attraction force generated between the first magnetic member 10 and the second magnetic member MG and comes to rest.

具体的には、図１２Ｂに示すように、第１磁石１０Ａ及び第１金属板ＭＧ１は、第１金属板ＭＧ１に対向する第１磁石１０Ａの上側対向面ＣＳＵ１の面積が、第１磁石１０Ａに対向する第１金属板ＭＧ１の下側対向面ＣＳＬ１の面積にほぼ等しくなるように構成されている。また、第２磁石１０Ｂ及び第２金属板ＭＧ２は、第２金属板ＭＧ２に対向する第２磁石１０Ｂの上側対向面ＣＳＵ２の面積が、第２磁石１０Ｂに対向する第２金属板ＭＧ２の下側対向面ＣＳＬ２の面積にほぼ等しくなるように構成されている。 Specifically, as shown in FIG. 12B, the first magnet 10A and the first metal plate MG1 are configured so that the area of the upper facing surface CSU1 of the first magnet 10A facing the first metal plate MG1 is approximately equal to the area of the lower facing surface CSL1 of the first metal plate MG1 facing the first magnet 10A. Also, the second magnet 10B and the second metal plate MG2 are configured so that the area of the upper facing surface CSU2 of the second magnet 10B facing the second metal plate MG2 is approximately equal to the area of the lower facing surface CSL2 of the second metal plate MG2 facing the second magnet 10B.

また、図１２Ａ及び図１２Ｂに示す例では、第１磁性部材１０は、略直方体の外形を有するが、円柱又は六角柱等の他の外形を有していてもよい。すなわち、図１２Ａ及び図１２Ｂに示す例では、上側対向面ＣＳＵは、矩形の外形を有するが、円形又は六角形等の他の外形を有していてもよい。この場合、下側対向面ＣＳＬは、望ましくは、上側対向面ＣＳＵと同じ外形を有するように構成される。 In the example shown in Figures 12A and 12B, the first magnetic member 10 has a substantially rectangular parallelepiped outer shape, but may have other outer shapes, such as a cylinder or a hexagonal prism. That is, in the example shown in Figures 12A and 12B, the upper facing surface CSU has a rectangular outer shape, but may have other outer shapes, such as a circle or a hexagon. In this case, the lower facing surface CSL is preferably configured to have the same outer shape as the upper facing surface CSU.

次に、図１３Ａ及び図１３Ｂを参照し、レンズ保持部材２の動きを規制するストッパ部ＳＴの詳細について説明する。ここでは、特に、第１ストッパ部ＳＴ１及び第２ストッパ部ＳＴ２について説明する。図１３Ａ及び図１３Ｂは、第１磁性部材１０が取り付けられたレンズ保持部材２、及び、第２磁性部材ＭＧが埋め込まれたベース部材１８の上面図である。具体的には、図１３Ａは、レンズ保持部材２とベース部材１８の全体の上面図であり、図１３Ｂは、図１３Ａに示す破線で囲まれた範囲Ｒ４の拡大図である。 Next, with reference to Figures 13A and 13B, the stopper portion ST that restricts the movement of the lens holding member 2 will be described in detail. Here, the first stopper portion ST1 and the second stopper portion ST2 will be described in particular. Figures 13A and 13B are top views of the lens holding member 2 to which the first magnetic member 10 is attached, and the base member 18 in which the second magnetic member MG is embedded. Specifically, Figure 13A is a top view of the entire lens holding member 2 and base member 18, and Figure 13B is an enlarged view of the area R4 surrounded by the dashed line shown in Figure 13A.

上述のように、第１ストッパ部ＳＴ１は、第１突設部２Ｓ１と第１固定側台座部１８Ｄ１との組み合わせで構成され、第２ストッパ部ＳＴ２は、第２突設部２Ｓ２と第２固定側台座部１８Ｄ２との組み合わせで構成されている。 As described above, the first stopper portion ST1 is formed by a combination of the first protrusion portion 2S1 and the first fixed side base portion 18D1, and the second stopper portion ST2 is formed by a combination of the second protrusion portion 2S2 and the second fixed side base portion 18D2.

具体的には、第２ストッパ部ＳＴ２は、図１３Ｂに示すように、外周面ＣＦ（点線で表される面）を有する第２突設部２Ｓ２と、外周面ＣＦを覆うように対向する内周面ＳＦ（破線で表される面）を有する壁部としての第２固定側台座部１８Ｄ２（第２ストッパ用凹部ＳＢ２）との組み合わせで構成されている。なお、外周面ＣＦと内周面ＳＦとは所定の間隔を空けて互いに対向しており、Ｘ軸に平行に延びる部分、及び、Ｙ軸に平行に延びる部分で最も接近するように配置されている。同様に、第１ストッパ部ＳＴ１は、図１３Ａに示すように、外周面を有する第１突設部２Ｓ１と、その外周面を覆うように対向する内周面を有する壁部としての第１固定側台座部１８Ｄ１（第１ストッパ用凹部ＳＢ１）との組み合わせで構成されている。 Specifically, as shown in FIG. 13B, the second stopper portion ST2 is configured by a combination of a second protruding portion 2S2 having an outer peripheral surface CF (surface represented by a dotted line) and a second fixed side base portion 18D2 (second stopper recess SB2) as a wall portion having an inner peripheral surface SF (surface represented by a dashed line) that faces the outer peripheral surface CF so as to cover it. The outer peripheral surface CF and the inner peripheral surface SF face each other at a predetermined interval, and are disposed so as to be closest at the portion extending parallel to the X axis and the portion extending parallel to the Y axis. Similarly, as shown in FIG. 13A, the first stopper portion ST1 is configured by a combination of a first protruding portion 2S1 having an outer peripheral surface and a first fixed side base portion 18D1 (first stopper recess SB1) as a wall portion having an inner peripheral surface that faces the outer peripheral surface so as to cover it.

この構成により、図１３Ａの矢印ＡＲ２０で示す方向にレンズ保持部材２が光軸ＪＤ回りに過度に回転しようとすると、第２ストッパ部ＳＴ２では、図１３Ｂに示すように、第２突設部２Ｓ２の外周面ＣＦの右側部分ＣＦＲと、第２固定側台座部１８Ｄ２（第２ストッパ用凹部ＳＢ２）の内周面ＳＦの右側部分ＳＦＲとが接触する。その結果、光軸ＪＤ回りのレンズ保持部材２の過度の回転は、この接触によって阻止される。第１ストッパ部ＳＴ１についても同様であり、第１ストッパ部ＳＴ１での接触と第２ストッパ部ＳＴ２での接触は、ほぼ同じタイミングで発生する。 With this configuration, if the lens holding member 2 attempts to rotate excessively around the optical axis JD in the direction indicated by the arrow AR20 in FIG. 13A, at the second stopper portion ST2, as shown in FIG. 13B, the right portion CFR of the outer peripheral surface CF of the second protrusion portion 2S2 comes into contact with the right portion SFR of the inner peripheral surface SF of the second fixed side base portion 18D2 (second stopper recess SB2). As a result, excessive rotation of the lens holding member 2 around the optical axis JD is prevented by this contact. The same is true for the first stopper portion ST1, and contact at the first stopper portion ST1 and contact at the second stopper portion ST2 occur at approximately the same time.

また、図１３Ａの矢印ＡＲ２１で示す方向にレンズ保持部材２が光軸ＪＤ回りに過度に回転しようとすると、第２ストッパ部ＳＴ２では、図１３Ｂに示すように、第２突設部２Ｓ２の外周面ＣＦの左側部分ＣＦＬと、第２固定側台座部１８Ｄ２（第２ストッパ用凹部ＳＢ２）の内周面ＳＦの左側部分ＳＦＬとが接触する。その結果、光軸ＪＤ回りのレンズ保持部材２の過度の回転は、この接触によって阻止される。第１ストッパ部ＳＴ１についても同様であり、第１ストッパ部ＳＴ１での接触と第２ストッパ部ＳＴ２での接触は、ほぼ同じタイミングで発生する。 Furthermore, if the lens holding member 2 attempts to rotate excessively around the optical axis JD in the direction indicated by the arrow AR21 in FIG. 13A, the left portion CFL of the outer peripheral surface CF of the second protrusion 2S2 comes into contact with the left portion SFL of the inner peripheral surface SF of the second fixed side base portion 18D2 (second stopper recess SB2) at the second stopper portion ST2, as shown in FIG. 13B. As a result, excessive rotation of the lens holding member 2 around the optical axis JD is prevented by this contact. The same is true for the first stopper portion ST1, and contact at the first stopper portion ST1 and contact at the second stopper portion ST2 occur at approximately the same time.

次に、図１４Ａ及び図１４Ｂを参照し、光軸方向における第１磁性部材１０と第２磁性部材ＭＧとの間の間隔について説明する。図１４Ａ及び図１４Ｂは、図１３Ａにおける一点鎖線Ｌ１を含む、ＸＹ平面に垂直な平面におけるレンズ保持部材２、第１磁性部材１０、ベース部材１８、及び第２磁性部材ＭＧの断面を示す。具体的には、図１４Ａは、形状記憶合金ワイヤＳＡへの通電が開始される前の第１磁性部材１０と第２磁性部材ＭＧとの間の位置関係の一例を示し、図１４Ｂは、形状記憶合金ワイヤＳＡへの通電が開始された後の第１磁性部材１０と第２磁性部材ＭＧとの間の位置関係の一例を示す。 Next, referring to Figures 14A and 14B, the distance between the first magnetic member 10 and the second magnetic member MG in the optical axis direction will be described. Figures 14A and 14B show cross sections of the lens holding member 2, the first magnetic member 10, the base member 18, and the second magnetic member MG in a plane perpendicular to the XY plane, including the dashed line L1 in Figure 13A. Specifically, Figure 14A shows an example of the positional relationship between the first magnetic member 10 and the second magnetic member MG before current begins to flow through the shape memory alloy wire SA, and Figure 14B shows an example of the positional relationship between the first magnetic member 10 and the second magnetic member MG after current begins to flow through the shape memory alloy wire SA.

図１４Ａに示すように、形状記憶合金ワイヤＳＡへの通電が開始される前では、形状記憶合金ワイヤＳＡは、レンズ保持部材２を持ち上げるほどには収縮していない。また、レンズ保持部材２の収容部ＨＲに収容されている第１磁性部材１０は、ベース部材１８に埋設された第２磁性部材ＭＧに引き寄せられている。そのため、レンズ保持部材２の底面ＢＦとベース部材１８の上面ＴＦとは互いに引き合うように接触している。具体的には、レンズ保持部材２は、四箇所（四つの角部のそれぞれの底面）でベース部材１８と接触している。すなわち、第１磁性部材１０と第２磁性部材ＭＧとの間に生成される磁気的な吸引力よりも大きな力（レンズ保持部材２をベース部材１８から引き離す方向に作用する力）がレンズ保持部材２に作用しない限り、レンズ保持部材２とベース部材１８との間の接触は維持され、且つ、レンズ保持部材２の静止状態も維持される。 As shown in FIG. 14A, before the current is applied to the shape memory alloy wire SA, the shape memory alloy wire SA has not contracted enough to lift the lens holding member 2. In addition, the first magnetic member 10 housed in the housing portion HR of the lens holding member 2 is attracted to the second magnetic member MG embedded in the base member 18. Therefore, the bottom surface BF of the lens holding member 2 and the top surface TF of the base member 18 are in contact with each other so as to attract each other. Specifically, the lens holding member 2 is in contact with the base member 18 at four points (the bottom surfaces of the four corners). In other words, unless a force (a force acting in a direction to pull the lens holding member 2 away from the base member 18) greater than the magnetic attraction force generated between the first magnetic member 10 and the second magnetic member MG acts on the lens holding member 2, the contact between the lens holding member 2 and the base member 18 is maintained, and the stationary state of the lens holding member 2 is also maintained.

なお、第１磁性部材１０は、その底面が収容部ＨＲの底部ＢＷに接触した状態で収容部ＨＲ内に収容されるため、光軸方向（Ｚ軸方向）における位置が底部ＢＷにより位置決めされている。 The first magnetic member 10 is housed in the housing HR with its bottom surface in contact with the bottom BW of the housing HR, so its position in the optical axis direction (Z-axis direction) is determined by the bottom BW.

また、第２磁性部材ＭＧは、インサート成形の際に一対の位置決めピンによって金型内で挟持された状態で合成樹脂内に埋め込まれるため、光軸方向（Ｚ軸方向）における位置が位置決めピンによって位置決めされている。なお、図１４Ａ及び図１４Ｂに示す上側円形孔ＨＬ１及び下側円形孔ＨＬ２は、一対の位置決めピンによって形成される孔である。但し、上側円形孔ＨＬ１及び下側円形孔ＨＬ２は省略されてもよい。図１４Ａ及び図１４Ｂに示す例では、第２磁性部材ＭＧは、導電部材ＣＭの一部であり、導電部材ＣＭは、別の位置にある別の位置決めピンによって金型内に挟持され得るためである。 The second magnetic member MG is embedded in the synthetic resin while being clamped in the mold by a pair of positioning pins during insert molding, so its position in the optical axis direction (Z-axis direction) is determined by the positioning pins. The upper circular hole HL1 and the lower circular hole HL2 shown in Figures 14A and 14B are holes formed by a pair of positioning pins. However, the upper circular hole HL1 and the lower circular hole HL2 may be omitted. In the example shown in Figures 14A and 14B, the second magnetic member MG is part of the conductive member CM, and the conductive member CM may be clamped in the mold by another positioning pin at a different location.

この構成により、形状記憶合金ワイヤＳＡへの通電が開始される前では、第１磁性部材１０と第２磁性部材ＭＧとは、所定の距離だけ離れた状態で互いに引き合っている。すなわち、第１磁性部材１０と第２磁性部材ＭＧとは、磁気的な吸引力が過度に大きくならないように互いに間隔を空けて配置されている。具体的には、図１４Ａに示すように、第１磁石１０Ａと第１金属板ＭＧ１とは、距離Ｈ１だけ離れた状態で互いに引き合っている。すなわち、第１磁石１０Ａと第１金属板ＭＧ１とは、磁気的な吸引力が過度に大きくならないように互いに間隔を空けて配置されている。 With this configuration, before current begins to flow through the shape memory alloy wire SA, the first magnetic member 10 and the second magnetic member MG attract each other while being spaced apart by a predetermined distance. That is, the first magnetic member 10 and the second magnetic member MG are spaced apart from each other so that the magnetic attraction force does not become excessively large. Specifically, as shown in FIG. 14A, the first magnet 10A and the first metal plate MG1 attract each other while being spaced apart by a distance H1. That is, the first magnet 10A and the first metal plate MG1 are spaced apart from each other so that the magnetic attraction force does not become excessively large.

形状記憶合金ワイヤＳＡへの通電が開始されると、形状記憶合金ワイヤＳＡは、抵抗加熱によって加熱され、その加熱によるワイヤ温度の上昇に応じて収縮する。そして、形状記憶合金ワイヤＳＡが収縮すると、レンズ保持部材２は、収縮した形状記憶合金ワイヤＳＡによって持ち上げられ、図１４Ｂに示すように、ベース部材１８から離れてＺ１方向（上方）に移動する。図１４Ｂは、レンズ保持部材２の底面ＢＦとベース部材１８の上面ＴＦとの間の距離が距離Ｈ２になるまでレンズ保持部材２がＺ１方向に移動したときの状態を示している。 When current begins to flow through the shape memory alloy wire SA, the shape memory alloy wire SA is heated by resistance heating and contracts in response to the rise in wire temperature caused by the heating. Then, as the shape memory alloy wire SA contracts, the lens holding member 2 is lifted by the contracted shape memory alloy wire SA and moves in the Z1 direction (upward) away from the base member 18, as shown in FIG. 14B. FIG. 14B shows the state when the lens holding member 2 has moved in the Z1 direction until the distance between the bottom surface BF of the lens holding member 2 and the top surface TF of the base member 18 becomes distance H2.

上述の構成により、形状記憶合金ワイヤＳＡへの通電が開始される前では、レンズ保持部材２のＺ軸方向における位置（高さ）は、ベース部材１８の上面ＴＦによって位置決めされる。また、レンズ保持部材２のＺ軸回りの回転位置（角度位置）は、第１磁性部材１０と第２磁性部材ＭＧとの間に生成される磁気的な吸引力によって位置決めされる。第１磁性部材１０と第２磁性部材ＭＧとの間に生成される磁気的な吸引力は、第１磁石１０Ａと第１金属板ＭＧ１との間に生成される磁気的な吸引力、及び、第２磁石１０Ｂと第２金属板ＭＧ２との間に生成される磁気的な吸引力を含む。そして、レンズ保持部材２のＺ軸回りの回転ずれは、第１磁性部材１０と第２磁性部材ＭＧとの間に生成される磁気的な吸引力によって解消される。レンズ保持部材２のＸ軸方向における位置ずれ、及び、レンズ保持部材２のＹ軸方向における位置ずれも同様に、第１磁性部材１０と第２磁性部材ＭＧとの間に生成される磁気的な吸引力によって解消される。そのため、形状記憶合金ワイヤＳＡへの通電が開始される前では、レンズ保持部材２は、ベース部材１８に対する相対的な姿勢が所定の姿勢となるよう吸引力によって動かされ、所定の姿勢となった後は、吸引力よりも大きな外力が作用しない限りその相対的な姿勢が継続されるよう吸引力によって保持される。 With the above-mentioned configuration, before the current is applied to the shape memory alloy wire SA, the position (height) of the lens holding member 2 in the Z-axis direction is determined by the upper surface TF of the base member 18. In addition, the rotational position (angular position) of the lens holding member 2 around the Z-axis is determined by the magnetic attraction force generated between the first magnetic member 10 and the second magnetic member MG. The magnetic attraction force generated between the first magnetic member 10 and the second magnetic member MG includes the magnetic attraction force generated between the first magnet 10A and the first metal plate MG1, and the magnetic attraction force generated between the second magnet 10B and the second metal plate MG2. The rotational deviation of the lens holding member 2 around the Z-axis is eliminated by the magnetic attraction force generated between the first magnetic member 10 and the second magnetic member MG. The positional deviation of the lens holding member 2 in the X-axis direction and the positional deviation of the lens holding member 2 in the Y-axis direction are also eliminated by the magnetic attraction force generated between the first magnetic member 10 and the second magnetic member MG. Therefore, before the current begins to flow through the shape memory alloy wire SA, the lens holding member 2 is moved by the suction force so that its relative position with respect to the base member 18 is a predetermined position, and after the predetermined position is reached, the suction force keeps the relative position in place unless an external force greater than the suction force acts on the lens holding member 2.

上述のように、レンズ駆動装置１０１は、ベース部材１８及びカバー部材４を含む固定側部材ＲＧと、ベース部材１８とカバー部材４（上側カバー部材４Ｕ）とで形成される収容空間に配置されるとともに、レンズ体を保持可能なレンズ保持部材２と、レンズ保持部材２を含む可動側部材ＭＢと固定側部材ＲＧとの間に配置された複数の形状記憶合金ワイヤＳＡと、を備えている。 As described above, the lens driving device 101 includes a fixed side member RG including a base member 18 and a cover member 4, a lens holding member 2 that is arranged in a storage space formed by the base member 18 and the cover member 4 (upper cover member 4U) and can hold a lens body, and a plurality of shape memory alloy wires SA that are arranged between the movable side member MB including the lens holding member 2 and the fixed side member RG.

レンズ保持部材２は、ベース部材１８の被写体側である上側に配置され、形状記憶合金ワイヤＳＡへの通電によって移動可能となるように構成されている。レンズ保持部材２は、例えば、光軸方向及び光軸方向と交差する方向へ移動可能となるように構成されていてもよい。或いは、レンズ保持部材２は、ベース部材１８に対して光軸方向へのみ移動可能となるように構成されていてもよい。 The lens holding member 2 is disposed on the upper side, which is the subject side, of the base member 18, and is configured to be movable by passing electricity through the shape memory alloy wire SA. The lens holding member 2 may be configured to be movable, for example, in the optical axis direction and in a direction intersecting the optical axis direction. Alternatively, the lens holding member 2 may be configured to be movable only in the optical axis direction relative to the base member 18.

レンズ保持部材２には、複数の異なる位置に複数の第１磁性部材１０が配置されるとともに、ベース部材１８には、複数の第１磁性部材１０に対応する複数の第２磁性部材ＭＧが設けられている。そして、レンズ保持部材２及びベース部材１８は、複数の第１磁性部材１０のそれぞれが、対応する第２磁性部材ＭＧに引き寄せられ、形状記憶合金ワイヤＳＡへの非通電時にレンズ保持部材２の動きがベース部材１８によって規制されるように構成されている。すなわち、レンズ保持部材２は、レンズ保持部材２に取り付けられている第１磁性部材１０とベース部材１８に取り付けられている第２磁性部材ＭＧとの間に生成される吸引力により、ベース部材１８に対する相対的な姿勢が所定の姿勢で維持されるように構成されている。 The lens holding member 2 has a plurality of first magnetic members 10 arranged at a plurality of different positions, and the base member 18 has a plurality of second magnetic members MG corresponding to the plurality of first magnetic members 10. The lens holding member 2 and the base member 18 are configured so that each of the plurality of first magnetic members 10 is attracted to the corresponding second magnetic member MG, and the movement of the lens holding member 2 is restricted by the base member 18 when the shape memory alloy wire SA is not energized. In other words, the lens holding member 2 is configured so that the relative position of the lens holding member 2 with respect to the base member 18 is maintained in a predetermined position by the attractive force generated between the first magnetic member 10 attached to the lens holding member 2 and the second magnetic member MG attached to the base member 18.

例えば、レンズ保持部材２には、図１０に示すように、二つの異なる位置に複数の第１磁性部材１０としての第１磁石１０Ａ及び第２磁石１０Ｂが配置されるとともに、ベース部材１８には、図１２Ａ及び図１２Ｂに示すように、複数の第１磁性部材１０に対応する複数の第２磁性部材ＭＧとして、第１磁石１０Ａに対応する第１金属板ＭＧ１と第２磁石１０Ｂに対応する第２金属板ＭＧ２とが埋め込まれている。この構成では、レンズ保持部材２は、第１磁石１０Ａが第１金属板ＭＧ１に磁気的に引き寄せられ、且つ、第２磁石１０Ｂが第２金属板ＭＧ２に磁気的に引き寄せられるため、形状記憶合金ワイヤＳＡへの非通電時には、その動きが規制される。すなわち、レンズ保持部材２は、レンズ保持部材２に取り付けられている第１磁石１０Ａとベース部材１８に埋め込まれている第１金属板ＭＧ１との間に生成される吸引力、及び、レンズ保持部材２に取り付けられている第２磁石１０Ｂとベース部材１８に埋め込まれている第２金属板ＭＧ２との間に生成される吸引力により、ベース部材１８に対する相対的な姿勢が所定の姿勢（例えば図１３Ａに示す姿勢）となるように構成されている。 For example, as shown in Fig. 10, the lens holding member 2 has a first magnet 10A and a second magnet 10B arranged at two different positions as the multiple first magnetic members 10, and the base member 18 has embedded therein a first metal plate MG1 corresponding to the first magnet 10A and a second metal plate MG2 corresponding to the second magnet 10B as multiple second magnetic members MG corresponding to the multiple first magnetic members 10 as shown in Fig. 12A and Fig. 12B. In this configuration, the lens holding member 2 has the first magnet 10A magnetically attracted to the first metal plate MG1 and the second magnet 10B magnetically attracted to the second metal plate MG2, so that the movement of the lens holding member 2 is restricted when the shape memory alloy wire SA is not energized. That is, the lens holding member 2 is configured so that its relative position with respect to the base member 18 is a predetermined position (for example, the position shown in FIG. 13A) due to the attractive force generated between the first magnet 10A attached to the lens holding member 2 and the first metal plate MG1 embedded in the base member 18, and the attractive force generated between the second magnet 10B attached to the lens holding member 2 and the second metal plate MG2 embedded in the base member 18.

なお、図１０に示す例では、二つの第１磁性部材１０がレンズ保持部材２に取り付けられているが、三つ以上の第１磁性部材１０がレンズ保持部材２に取り付けられていてもよい。この場合、第１磁性部材１０の数と同じ数の第２磁性部材ＭＧがベース部材１８に埋め込まれる。 In the example shown in FIG. 10, two first magnetic members 10 are attached to the lens holding member 2, but three or more first magnetic members 10 may be attached to the lens holding member 2. In this case, the same number of second magnetic members MG as the number of first magnetic members 10 are embedded in the base member 18.

上述の構成により、レンズ駆動装置１０１は、形状記憶合金ワイヤＳＡが通電していない初期状態でのレンズ保持部材２の不所望な動きを防止できる。そのため、レンズ駆動装置１０１は、例えば、初期状態においてレンズ体の中心がカメラモジュールの中心からずれてしまっているといった好ましくない状況が発生してしまうのを防止できる。 With the above-mentioned configuration, the lens driving device 101 can prevent undesired movement of the lens holding member 2 in the initial state when the shape memory alloy wire SA is not energized. Therefore, the lens driving device 101 can prevent the occurrence of undesirable situations, such as the center of the lens body being misaligned from the center of the camera module in the initial state.

また、レンズ駆動装置１０１は、初期状態において、レンズ保持部材２とベース部材１８と間の接触・非接触の繰り返しによる音の発生を抑制できる。レンズ保持部材２とベース部材１８との間の接触状態が第１磁性部材１０と第２磁性部材ＭＧとの間の吸引力によって維持されるためである。なお、レンズ保持部材２とベース部材１８との間の接触・非接触の繰り返しは、吸引力が作用しない場合には、レンズ駆動装置１０１の近傍に設けられたバイブレータの振動、レンズ駆動装置１０１の近傍に設けられたスピーカの振動、又は、レンズ駆動装置１０１が組み込まれた携帯機器を使用者が手で振ったときのレンズ駆動装置１０１の振動等によって引き起こされる。 In addition, in the initial state, the lens driving device 101 can suppress the generation of noise caused by repeated contact and non-contact between the lens holding member 2 and the base member 18. This is because the contact state between the lens holding member 2 and the base member 18 is maintained by the attractive force between the first magnetic member 10 and the second magnetic member MG. Note that, when no attractive force is acting, repeated contact and non-contact between the lens holding member 2 and the base member 18 is caused by vibrations of a vibrator provided near the lens driving device 101, vibrations of a speaker provided near the lens driving device 101, or vibrations of the lens driving device 101 when a user shakes a portable device in which the lens driving device 101 is incorporated.

また、上述の構成では、少なくとも二箇所（二つの第１磁性部材１０と二つの第２磁性部材ＭＧ）でレンズ保持部材２の動きが規制されるため、一箇所のみでレンズ保持部材２の動きが規制される構成に比べ、レンズ保持部材２の動きをより確実に規制できる。一箇所のみでレンズ保持部材２の動きが規制される構成では、第１磁性部材を中心としてレンズ保持部材２が回転してしまうおそれがあるためである。なお、望ましくは、二つの第１磁性部材１０は、光軸ＪＤを挟んで互いに反対側となるように配置される。 In addition, in the above-mentioned configuration, the movement of the lens holding member 2 is restricted at at least two points (two first magnetic members 10 and two second magnetic members MG), so the movement of the lens holding member 2 can be restricted more reliably than in a configuration in which the movement of the lens holding member 2 is restricted at only one point. This is because in a configuration in which the movement of the lens holding member 2 is restricted at only one point, there is a risk that the lens holding member 2 will rotate around the first magnetic member. Preferably, the two first magnetic members 10 are arranged on opposite sides of the optical axis JD.

第２磁性部材ＭＧは、ベース部材１８を形成する合成樹脂によって上面が覆われていてもよい。この場合において、第２磁性部材ＭＧの上面は、一部が合成樹脂によって覆われていればよい。そして、ベース部材１８とレンズ保持部材２とは、形状記憶合金ワイヤＳＡへの非通電時において、互いに接触するように構成されていてもよい。具体的には、第２磁性部材ＭＧとしての第１金属板ＭＧ１は、図１４Ａに示すように、ベース部材１８に埋め込まれていてもよい。そして、ベース部材１８とレンズ保持部材２とは、形状記憶合金ワイヤＳＡへの非通電時において互いに接触し、第１磁石１０Ａと第１金属板ＭＧ１との間の間隔が距離Ｈ１となるように構成されていてもよい。 The upper surface of the second magnetic member MG may be covered by the synthetic resin forming the base member 18. In this case, it is sufficient that the upper surface of the second magnetic member MG is partially covered by the synthetic resin. The base member 18 and the lens holding member 2 may be configured to be in contact with each other when no current is applied to the shape memory alloy wire SA. Specifically, the first metal plate MG1 as the second magnetic member MG may be embedded in the base member 18 as shown in FIG. 14A. The base member 18 and the lens holding member 2 may be configured to be in contact with each other when no current is applied to the shape memory alloy wire SA, and the distance between the first magnet 10A and the first metal plate MG1 may be a distance H1.

この構成は、第１磁性部材１０と第２磁性部材ＭＧとが最も接近したときの距離（以下、「最小接近距離」とする。）を所定の距離Ｈ１（図１４Ａ参照。）以上に維持できるため、第１磁性部材１０と第２磁性部材ＭＧとの間に生成される磁気的な吸引力が過度に強くなってしまうのを防止できる。そのため、この構成は、形状記憶合金ワイヤＳＡへの通電の際のレンズ保持部材２の動き（吸引力に逆らう動き）が過度に遅くなってしまうのを防止できる。すなわち、この構成は、第２磁性部材ＭＧがベース部材１８の表面に露出し、第２磁性部材ＭＧとレンズ保持部材２とが接触している構成（最小接近距離がより小さい構成）に比べ、形状記憶合金ワイヤＳＡへの通電を開始したときのレンズ保持部材２の動きを迅速化できる。 This configuration can maintain the closest distance between the first magnetic member 10 and the second magnetic member MG (hereinafter referred to as the "minimum approach distance") at a predetermined distance H1 (see FIG. 14A) or more, and therefore can prevent the magnetic attraction force generated between the first magnetic member 10 and the second magnetic member MG from becoming excessively strong. Therefore, this configuration can prevent the movement of the lens holding member 2 (movement against the attraction force) from becoming excessively slow when current is applied to the shape memory alloy wire SA. In other words, this configuration can speed up the movement of the lens holding member 2 when current is applied to the shape memory alloy wire SA, compared to a configuration in which the second magnetic member MG is exposed on the surface of the base member 18 and the second magnetic member MG and the lens holding member 2 are in contact (a configuration with a smaller minimum approach distance).

第１磁性部材１０は、望ましくは、磁石である。図１０に示す例では、第１磁性部材１０は、光軸方向に沿って分極された二極永久磁石としての第１磁石１０Ａ及び第２磁石１０Ｂを含む。この場合、第２磁性部材ＭＧとしては、望ましくは図１２Ａ及び図１２Ｂに示す例のように、磁石ではなく、金属板（第１金属板ＭＧ１及び第２金属板ＭＧ２）が採用される。 The first magnetic member 10 is preferably a magnet. In the example shown in FIG. 10, the first magnetic member 10 includes a first magnet 10A and a second magnet 10B as two-pole permanent magnets polarized along the optical axis direction. In this case, the second magnetic member MG is preferably a metal plate (first metal plate MG1 and second metal plate MG2) rather than a magnet, as in the example shown in FIG. 12A and FIG. 12B.

但し、第２磁性部材ＭＧとして磁石が採用され、第１磁性部材１０として金属板が採用されてもよい。或いは、第１磁性部材１０として磁石が採用され、且つ、第２磁性部材ＭＧとして磁石が採用されてもよい。 However, a magnet may be used as the second magnetic member MG, and a metal plate may be used as the first magnetic member 10. Alternatively, a magnet may be used as the first magnetic member 10, and a magnet may be used as the second magnetic member MG.

図１２Ｂに示すように、第１磁性部材１０及び第２磁性部材ＭＧは、望ましくは、第２磁性部材ＭＧに対向する第１磁性部材１０の上側対向面ＣＳＵの面積が、第１磁性部材１０に対向する第２磁性部材ＭＧの下側対向面ＣＳＬの面積と同等になるように構成されている。形状記憶合金ワイヤＳＡへの非通電時におけるベース部材１８に対するレンズ保持部材２の相対的な姿勢がばらついてしまうのを抑えるためである。 As shown in FIG. 12B, the first magnetic member 10 and the second magnetic member MG are preferably configured so that the area of the upper opposing surface CSU of the first magnetic member 10 facing the second magnetic member MG is equal to the area of the lower opposing surface CSL of the second magnetic member MG facing the first magnetic member 10. This is to prevent variation in the relative position of the lens holding member 2 with respect to the base member 18 when no current is applied to the shape memory alloy wire SA.

ベース部材１８には、図５Ａ～図５Ｃに示すように、形状記憶合金ワイヤＳＡに導通する導電部材ＣＭが埋設されていてもよい。そして、第２磁性部材ＭＧは、図１２Ａ及び図１２Ｂに示すように、導電部材ＣＭと同じ金属で形成されていてもよい。図１２Ａ及び図１２Ｂに示す例では、第２磁性部材ＭＧとしての第１金属板ＭＧ１は、第２導電部材ＣＭ２の一部であり、第２磁性部材ＭＧとしての第２金属板ＭＧ２は、第８導電部材ＣＭ８の一部である。この構成は、レンズ駆動装置１０１の生産性を高めることができる。導電部材ＣＭと第２磁性部材ＭＧとが一体的に形成されるためである。 As shown in Figures 5A to 5C, a conductive member CM that is electrically conductive to the shape memory alloy wire SA may be embedded in the base member 18. The second magnetic member MG may be formed of the same metal as the conductive member CM as shown in Figures 12A and 12B. In the example shown in Figures 12A and 12B, the first metal plate MG1 as the second magnetic member MG is part of the second conductive member CM2, and the second metal plate MG2 as the second magnetic member MG is part of the eighth conductive member CM8. This configuration can increase the productivity of the lens driving device 101. This is because the conductive member CM and the second magnetic member MG are integrally formed.

上側カバー部材４Ｕは、望ましくは図１０に示すように、第１外周壁部４Ａと天板部４Ｂを有し、光軸方向から見た平面視において矩形状をしている。そして、第１磁性部材１０は、対角配置される上側カバー部材４Ｕの二つの角部４Ｅのそれぞれに対応するレンズ保持部材２の二箇所に設けられている。具体的には、図１０に示す例では、第１磁性部材１０の一例である第１磁石１０Ａは、上側カバー部材４Ｕの第２角部４Ｅ２に対応する位置にあるレンズ保持部材２の第１突設部２Ｓ１に取り付けられ、第１磁性部材１０の別の一例である第２磁石１０Ｂは、光軸ＪＤを挟んで第２角部４Ｅ２の反対側に配置されている第４角部４Ｅ４に対応する位置にあるレンズ保持部材２の第２突設部２Ｓ２に取り付けられている。 As shown in FIG. 10, the upper cover member 4U preferably has a first outer peripheral wall portion 4A and a top plate portion 4B, and is rectangular in plan view from the optical axis direction. The first magnetic member 10 is provided at two locations on the lens holding member 2 corresponding to the two corners 4E of the upper cover member 4U that are diagonally arranged. Specifically, in the example shown in FIG. 10, a first magnet 10A, which is an example of the first magnetic member 10, is attached to a first protruding portion 2S1 of the lens holding member 2 at a position corresponding to the second corner 4E2 of the upper cover member 4U, and a second magnet 10B, which is another example of the first magnetic member 10, is attached to a second protruding portion 2S2 of the lens holding member 2 at a position corresponding to the fourth corner 4E4 that is arranged on the opposite side of the second corner 4E2 across the optical axis JD.

この構成は、上側カバー部材４Ｕの角部４Ｅの内側近傍にあるデッドスペースとなりやすい空間に第１磁性部材１０を配置できるため、レンズ駆動装置１０１の大型化を抑制できる。 This configuration allows the first magnetic member 10 to be placed in a space that tends to become dead space near the inside of the corner 4E of the upper cover member 4U, thereby preventing the lens driving device 101 from becoming large.

レンズ保持部材２は、図１０に示すように、光軸方向に延びるとともにレンズ体が内部に収容される筒状部１２と、上側カバー部材４Ｕの角部４Ｅに対応する位置に、筒状部１２から角部４Ｅの側へ突出する突設部２Ｓとを有していてもよい。この場合、突設部２Ｓには、底部ＢＷ（図１４Ａ参照。）を有する収容部ＨＲが設けられており、収容部ＨＲには第１磁性部材１０が収容される。 As shown in FIG. 10, the lens holding member 2 may have a cylindrical portion 12 that extends in the optical axis direction and houses the lens body therein, and a protrusion 2S that protrudes from the cylindrical portion 12 toward the corner 4E of the upper cover member 4U at a position corresponding to the corner 4E. In this case, the protrusion 2S is provided with a storage portion HR having a bottom portion BW (see FIG. 14A), and the storage portion HR stores the first magnetic member 10.

具体的には、図１０に示す例では、レンズ保持部材２は、上側カバー部材４Ｕの第２角部４Ｅ２に対応する位置に、筒状部１２から第２角部４Ｅ２の側へ突出する第１突設部２Ｓ１と、上側カバー部材４Ｕの第４角部４Ｅ４に対応する位置に、筒状部１２から第４角部４Ｅ４の側へ突出する第２突設部２Ｓ２と、を有する。そして、第１突設部２Ｓ１には、底部ＢＷ（図１４Ａ参照。）を有する第１収容部ＨＲ１が設けられており、第１収容部ＨＲ１には第１磁石１０Ａが収容されている。また、第２突設部２Ｓ２には、底部を有する第２収容部ＨＲ２が設けられており、第２収容部ＨＲ２には第２磁石１０Ｂが収容されている。 10, the lens holding member 2 has a first protrusion 2S1 that protrudes from the cylindrical portion 12 toward the second corner 4E2 at a position corresponding to the second corner 4E2 of the upper cover member 4U, and a second protrusion 2S2 that protrudes from the cylindrical portion 12 toward the fourth corner 4E4 at a position corresponding to the fourth corner 4E4 of the upper cover member 4U. The first protrusion 2S1 is provided with a first housing portion HR1 having a bottom BW (see FIG. 14A), and the first housing portion HR1 houses a first magnet 10A. The second protrusion 2S2 is provided with a second housing portion HR2 that has a bottom, and the second housing portion HR2 houses a second magnet 10B.

この構成は、第１磁性部材１０が所定の位置に配置されるのを可能にし、第１磁性部材１０の位置ずれが発生するのを防止できる。 This configuration allows the first magnetic member 10 to be positioned at a predetermined position and prevents the first magnetic member 10 from becoming misaligned.

ベース部材１８は、図１３Ｂに示すように、突設部２Ｓの外周面ＣＦを覆うように対向する内周面ＳＦを有する壁部としての固定側台座部１８Ｄを有していてもよい。この場合、突設部２Ｓと固定側台座部１８Ｄとは、少なくとも光軸ＪＤの回りで回転しようとするレンズ保持部材２の動きを規制するストッパ部ＳＴを構成してもよい。 As shown in FIG. 13B, the base member 18 may have a fixed-side base portion 18D as a wall portion having an inner peripheral surface SF that faces and covers the outer peripheral surface CF of the protrusion portion 2S. In this case, the protrusion portion 2S and the fixed-side base portion 18D may form a stopper portion ST that regulates the movement of the lens holding member 2 that attempts to rotate at least around the optical axis JD.

具体的には、図１３Ｂに示す例では、ベース部材１８は、第２突設部２Ｓ２の外周面ＣＦを覆うように対向する内周面ＳＦを有する第２固定側台座部１８Ｄ２を有する。そして、第２突設部２Ｓ２と第２固定側台座部１８Ｄ２とは、少なくとも光軸ＪＤの回りで回転しようとするレンズ保持部材２の過度の動きを規制する第２ストッパ部ＳＴ２を構成している。第１突設部２Ｓ１と第１固定側台座部１８Ｄ１によって構成されるストッパ部ＳＴ１（図１３Ａ参照。）についても同様である。 Specifically, in the example shown in FIG. 13B, the base member 18 has a second fixed-side pedestal portion 18D2 having an inner peripheral surface SF that faces and covers the outer peripheral surface CF of the second protrusion portion 2S2. The second protrusion portion 2S2 and the second fixed-side pedestal portion 18D2 form a second stopper portion ST2 that restricts excessive movement of the lens holding member 2 that attempts to rotate at least around the optical axis JD. The same is true for the stopper portion ST1 (see FIG. 13A) formed by the first protrusion portion 2S1 and the first fixed-side pedestal portion 18D1.

なお、図１３Ａに示す例では、第１突設部２Ｓ１と第１固定側台座部１８Ｄ１とによって構成される第１ストッパ部ＳＴ１、及び、第２突設部２Ｓ２と第２固定側台座部１８Ｄ２とによって構成される第２ストッパ部ＳＴ２は、光軸ＪＤの回りで回転しようとするレンズ保持部材２の過度の動き（Ｚ軸回りの過度の回転）ばかりでなく、Ｘ軸方向に沿った過度の並進、Ｙ軸方向に沿った過度の並進、Ｚ２方向への過度の並進、Ｘ軸回りの過度の回転、及び、Ｙ軸回りの過度の回転をも規制できるように構成されている。 In the example shown in FIG. 13A, the first stopper portion ST1 formed by the first protrusion portion 2S1 and the first fixed side base portion 18D1, and the second stopper portion ST2 formed by the second protrusion portion 2S2 and the second fixed side base portion 18D2 are configured to regulate not only excessive movement of the lens holding member 2 attempting to rotate around the optical axis JD (excessive rotation around the Z axis), but also excessive translation along the X axis direction, excessive translation along the Y axis direction, excessive translation in the Z2 direction, excessive rotation around the X axis, and excessive rotation around the Y axis.

この構成では、収容部ＨＲが形成される突設部２Ｓを利用してストッパ部ＳＴが形成されるため、ベース部材１８とカバー部材４（上側カバー部材４Ｕ）とで形成される収容空間のスペース効率を高めることができる。 In this configuration, the stopper portion ST is formed using the protruding portion 2S in which the storage portion HR is formed, thereby improving the space efficiency of the storage space formed by the base member 18 and the cover member 4 (upper cover member 4U).

ベース部材１８は、上側カバー部材４Ｕの四つの角部４Ｅのうちの二つのそれぞれの近傍に位置する壁部（固定側台座部１８Ｄ）を有していてもよい。この場合、壁部（固定側台座部１８Ｄ）には、非磁性金属で形成された第１導体板（固定側金属部材５Ｆ）が固定されてもよい。また、レンズ保持部材２は、上側カバー部材４Ｕにおけるそれら二つの角部とは異なる別の二つの角部のそれぞれの近傍に位置する固定部（可動側台座部２Ｄ）を有していてもよい。この場合、固定部（可動側台座部２Ｄ）には、非磁性金属で形成された第２導体板（可動側金属部材５Ｍ）が固定されてもよい。そして、形状記憶合金ワイヤＳＡは、第１導体板（固定側金属部材５Ｆ）と第２導体板（可動側金属部材５Ｍ）との間に設けられていてもよい。 The base member 18 may have a wall portion (fixed side pedestal portion 18D) located near two of the four corners 4E of the upper cover member 4U. In this case, a first conductor plate (fixed side metal member 5F) made of a non-magnetic metal may be fixed to the wall portion (fixed side pedestal portion 18D). The lens holding member 2 may also have a fixed portion (movable side pedestal portion 2D) located near two other corners different from the two corners of the upper cover member 4U. In this case, a second conductor plate (movable side metal member 5M) made of a non-magnetic metal may be fixed to the fixed portion (movable side pedestal portion 2D). The shape memory alloy wire SA may be provided between the first conductor plate (fixed side metal member 5F) and the second conductor plate (movable side metal member 5M).

具体的には、ベース部材１８は、図１０に示すように、第２角部４Ｅ２の近傍に位置する第１固定側台座部１８Ｄ１と、第４角部４Ｅ４の近傍に位置する第２固定側台座部１８Ｄ２と、を有していてもよい。この場合、第１固定側台座部１８Ｄ１には、図３Ｂに示すように、第１導体板としての第１固定側ターミナルプレート５Ｆ１、第２固定側ターミナルプレート５Ｆ２、第５固定側ターミナルプレート５Ｆ５、及び第６固定側ターミナルプレート５Ｆ６が固定される。また、第２固定側台座部１８Ｄ２には、図３Ｂに示すように、第１導体板としての第３固定側ターミナルプレート５Ｆ３、第４固定側ターミナルプレート５Ｆ４、第７固定側ターミナルプレート５Ｆ７、及び第８固定側ターミナルプレート５Ｆ８が固定される。また、レンズ保持部材２は、図１０に示すように、第１角部４Ｅ１の近傍に位置する第２可動側台座部２Ｄ２と、第３角部４Ｅ３の近傍に位置する第１可動側台座部２Ｄ１と、を有していてもよい。この場合、第１可動側台座部２Ｄ１には、図３Ａに示すように、第２導体板としての第１可動側ターミナルプレート５Ｍ１及び第２可動側ターミナルプレート５Ｍ２が固定される。また、第２可動側台座部２Ｄ２には、図３Ａに示すように、第２導体板としての第３可動側ターミナルプレート５Ｍ３及び第４可動側ターミナルプレート５Ｍ４が固定される。そして、形状記憶合金ワイヤＳＡは、固定側金属部材５Ｆと可動側金属部材５Ｍとの間に設けられる。具体的には、図６Ａに示すように、第１ワイヤＳＡ１は、第１固定側ターミナルプレート５Ｆ１と第１可動側ターミナルプレート５Ｍ１との間に設けられ、第２ワイヤＳＡ２は、第２固定側ターミナルプレート５Ｆ２と第１可動側ターミナルプレート５Ｍ１との間に設けられる。また、第３ワイヤＳＡ３は、第３固定側ターミナルプレート５Ｆ３と第２可動側ターミナルプレート５Ｍ２との間に設けられ、第４ワイヤＳＡ４は、第４固定側ターミナルプレート５Ｆ４と第２可動側ターミナルプレート５Ｍ２との間に設けられる。同様に、第５ワイヤＳＡ５は、第５固定側ターミナルプレート５Ｆ５と第３可動側ターミナルプレート５Ｍ３との間に設けられ、第６ワイヤＳＡ６は、第６固定側ターミナルプレート５Ｆ６と第３可動側ターミナルプレート５Ｍ３との間に設けられる。また、第７ワイヤＳＡ７は、第７固定側ターミナルプレート５Ｆ７と第４可動側ターミナルプレート５Ｍ４との間に設けられ、第８ワイヤＳＡ８は、第８固定側ターミナルプレート５Ｆ８と第４可動側ターミナルプレート５Ｍ４との間に設けられる。 Specifically, the base member 18 may have a first fixed side pedestal portion 18D1 located near the second corner 4E2 and a second fixed side pedestal portion 18D2 located near the fourth corner 4E4, as shown in Fig. 10. In this case, the first fixed side terminal plate 5F1, the second fixed side terminal plate 5F2, the fifth fixed side terminal plate 5F5, and the sixth fixed side terminal plate 5F6 as the first conductor plate are fixed to the first fixed side pedestal portion 18D1, as shown in Fig. 3B. Also, the third fixed side terminal plate 5F3, the fourth fixed side terminal plate 5F4, the seventh fixed side terminal plate 5F7, and the eighth fixed side terminal plate 5F8 as the first conductor plate are fixed to the second fixed side pedestal portion 18D2, as shown in Fig. 3B. Also, as shown in Fig. 10, the lens holding member 2 may have a second movable side pedestal portion 2D2 located near the first corner portion 4E1 and a first movable side pedestal portion 2D1 located near the third corner portion 4E3. In this case, as shown in Fig. 3A, a first movable side terminal plate 5M1 and a second movable side terminal plate 5M2 as a second conductor plate are fixed to the first movable side pedestal portion 2D1. Also, as shown in Fig. 3A, a third movable side terminal plate 5M3 and a fourth movable side terminal plate 5M4 as a second conductor plate are fixed to the second movable side pedestal portion 2D2. The shape memory alloy wire SA is provided between the fixed side metal member 5F and the movable side metal member 5M. Specifically, as shown in Fig. 6A, the first wire SA1 is provided between the first fixed side terminal plate 5F1 and the first movable side terminal plate 5M1, and the second wire SA2 is provided between the second fixed side terminal plate 5F2 and the first movable side terminal plate 5M1. The third wire SA3 is provided between the third fixed side terminal plate 5F3 and the second movable side terminal plate 5M2, and the fourth wire SA4 is provided between the fourth fixed side terminal plate 5F4 and the second movable side terminal plate 5M2. Similarly, the fifth wire SA5 is provided between the fifth fixed side terminal plate 5F5 and the third movable side terminal plate 5M3, and the sixth wire SA6 is provided between the sixth fixed side terminal plate 5F6 and the third movable side terminal plate 5M3. Additionally, the seventh wire SA7 is provided between the seventh fixed side terminal plate 5F7 and the fourth movable side terminal plate 5M4, and the eighth wire SA8 is provided between the eighth fixed side terminal plate 5F8 and the fourth movable side terminal plate 5M4.

この構成では、固定側金属部材５Ｆ及び可動側金属部材５Ｍは、何れも非磁性金属で形成されているため、第１磁性部材１０と第２磁性部材ＭＧとの間に生成される磁気的な吸引力に悪影響を及ぼすことはない。 In this configuration, the fixed metal member 5F and the movable metal member 5M are both made of non-magnetic metal, so they do not adversely affect the magnetic attraction force generated between the first magnetic member 10 and the second magnetic member MG.

以上、本発明の好ましい実施形態について詳説した。しかしながら、本発明は、上述した実施形態に制限されることはない。上述した実施形態は、本発明の範囲を逸脱することなしに、種々の変形及び置換等が適用され得る。また、上述の実施形態を参照して説明された特徴のそれぞれは、技術的に矛盾しない限り、適宜に組み合わされてもよい。 The above describes preferred embodiments of the present invention in detail. However, the present invention is not limited to the above-described embodiments. Various modifications and substitutions can be applied to the above-described embodiments without departing from the scope of the present invention. Furthermore, each of the features described with reference to the above-described embodiments may be combined as appropriate, provided that there is no technical contradiction.

１・・・スペーサ部材 ２・・・レンズ保持部材 ２Ｄ・・・可動側台座部 ２Ｄ１・・・第１可動側台座部 ２Ｄ２・・・第２可動側台座部 ２Ｓ・・・突設部 ２Ｓ１・・・第１突設部 ２Ｓ２・・・第２突設部 ２Ｔ・・・突出部 ２Ｖ・・・突起部 ４・・・カバー部材 ４Ａ・・・第１外周壁部 ４Ａ１・・・第１側板部 ４Ａ２・・・第２側板部 ４Ａ３・・・第３側板部 ４Ａ４・・・第４側板部 ４Ｂ・・・天板部 ４Ｃ・・・第２外周壁部 ４Ｃ１・・・第１側板部 ４Ｃ２・・・第２側板部 ４Ｃ３・・・第３側板部 ４Ｃ４・・・第４側板部 ４Ｄ・・・底板部 ４Ｅ・・・角部 ４Ｅ１・・・第１角部 ４Ｅ２・・・第２角部 ４Ｅ３・・・第３角部 ４Ｅ４・・・第４角部 ４ｋ・・・開口 ４Ｌ・・・下側カバー部材 ４ｍ・・・開口 ４ｓ・・・収納部 ４Ｕ・・・上側カバー部材 ５・・・金属部材 ５Ｆ・・・固定側金属部材 ５Ｆ１・・・第１固定側ターミナルプレート ５Ｆ２・・・第２固定側ターミナルプレート ５Ｆ３・・・第３固定側ターミナルプレート ５Ｆ４・・・第４固定側ターミナルプレート ５Ｆ５・・・第５固定側ターミナルプレート ５Ｆ６・・・第６固定側ターミナルプレート ５Ｆ７・・・第７固定側ターミナルプレート ５Ｆ８・・・第８固定側ターミナルプレート ５Ｍ・・・可動側金属部材 ５Ｍ１・・・第１可動側ターミナルプレート ５Ｍ２・・・第２可動側ターミナルプレート ５Ｍ３・・・第３可動側ターミナルプレート ５Ｍ４・・・第４可動側ターミナルプレート ６・・・板ばね ６Ａ・・・第１板ばね ６Ａ１・・・第１部分 ６Ａ２・・・第２部分 ６Ａ３・・・第３部分 ６Ａ４・・・第４部分 ６Ａ５・・・第５部分 ６ＡＨ１・・・第１貫通孔 ６ＡＨ２・・・第２貫通孔 ６ＡＨ３・・・第３貫通孔 ６ＡＨ４・・・第４貫通孔 ６ＡＨ５・・・第５貫通孔 ６ＡＨ６・・・第６貫通孔 ６Ｂ・・・第２板ばね ６Ｂ１・・・第１部分 ６Ｂ２・・・第２部分 ６Ｂ３・・・第３部分 ６Ｂ４・・・第４部分 ６Ｂ５・・・第５部分 ６ＢＨ１・・・第１貫通孔 ６ＢＨ２・・・第２貫通孔 ６ＢＨ３・・・第３貫通孔 ６ＢＨ４・・・第４貫通孔 ６ＢＨ５・・・第５貫通孔 ６ＢＨ６・・・第６貫通孔 １０・・・第１磁性部材 １０Ａ・・・第１磁石 １０Ｂ・・・第２磁石 １２・・・筒状部 １８・・・ベース部材 １８Ｄ・・・固定側台座部 １８Ｄ１・・・第１固定側台座部 １８Ｄ２・・・第２固定側台座部 １８Ｅ・・・辺部 １８Ｅ１・・・第１辺部 １８Ｅ２・・・第２辺部 １８Ｅ３・・・第３辺部 １８Ｅ４・・・第４辺部 １８Ｋ・・・開口 １８Ｓ・・・ストッパ用凸部 １８Ｓ１・・・第１ストッパ用凸部 １８Ｓ２・・・第２ストッパ用凸部 １８Ｔ・・・突出部 １８Ｖ・・・突起部 １０１・・・レンズ駆動装置 ＡＨ・・・矩形孔 ＢＦ・・・底面 ＢＷ・・・底部 ＣＦ・・・外周面 ＣＭ・・・導電部材 ＣＭ１・・・第１導電部材 ＣＭ２・・・第２導電部材 ＣＭ３・・・第３導電部材 ＣＭ４・・・第４導電部材 ＣＭ５・・・第５導電部材 ＣＭ６・・・第６導電部材 ＣＭ７・・・第７導電部材 ＣＭ８・・・第８導電部材 ＣＭ９・・・第９導電部材 ＣＭ１０・・・第１０導電部材 ＣＭ１１・・・第１１導電部材 ＣＰ９・・・第９接合面部 ＣＰ１０・・・第１０接合面部 ＣＳＬ・・・下側対向面 ＣＳＬ１・・・下側対向面 ＣＳＬ２・・・下側対向面 ＣＳＵ・・・上側対向面 ＣＳＵ１・・・上側対向面 ＣＳＵ２・・・上側対向面 ＣＴ１～ＣＴ１２・・・接続部 ＣＶ・・・ストッパ用凹部 ＣＶ１・・・第１ストッパ用凹部 ＣＶ２・・・第２ストッパ用凹部 ＥＤ１・・・第１接続部 ＥＤ２・・・第２接続部 ＥＤ３・・・第３接続部 ＥＤ４・・・第４接続部 ＥＤ５・・・第５接続部 ＥＤ６・・・第６接続部 ＥＤ７・・・第７接続部 ＥＤ８・・・第８接続部 ＥＤ１１・・・第１１接続部 ＥＰ・・・端面 ＥＷ・・・取付面 ＥＷ１・・・第１取付面 ＥＷ２・・・第２取付面 ＥＷ３・・・第３取付面 ＥＷ４・・・第４取付面 ＨＬ１・・・上側円形孔 ＨＬ２・・・下側円形孔 ＨＲ・・・収容部 ＨＲ１・・・第１収容部 ＨＲ２・・・第２収容部 Ｊ１～Ｊ４・・・保持部 ＪＤ・・・光軸 ＭＢ・・・可動側部材 ＭＧ・・・第２磁性部材 ＭＧ１・・・第１金属板 ＭＧ２・・・第２金属板 ＭＫ・・・駆動機構 ＲＧ・・・固定側部材 ＲＨ・・・貫通孔 ＲＳ１、ＲＳ２・・・凹部 ＳＡ・・・形状記憶合金ワイヤ ＳＡ１・・・第１ワイヤ ＳＡ２・・・第２ワイヤ ＳＡ３・・・第３ワイヤ ＳＡ４・・・第４ワイヤ ＳＡ５・・・第５ワイヤ ＳＡ６・・・第６ワイヤ ＳＡ７・・・第７ワイヤ ＳＡ８・・・第８ワイヤ ＳＢ・・・ストッパ用凹部 ＳＢ１・・・第１ストッパ用凹部 ＳＢ２・・・第２ストッパ用凹部 ＳＤ・・・接合材 ＳＦ・・・内周面 ＳＴ・・・ストッパ部 ＳＴ１・・・第１ストッパ部 ＳＴ２・・・第２ストッパ部 ＳＴ３・・・第３ストッパ部 ＳＴ４・・・第４ストッパ部 ＴＦ・・・上面 ＴＭ１・・・第１端子部 ＴＭ２・・・第２端子部 ＴＭ３・・・第３端子部 ＴＭ４・・・第４端子部 ＴＭ５・・・第５端子部 ＴＭ６・・・第６端子部 ＴＭ７・・・第７端子部 ＴＭ８・・・第８端子部 ＴＭ９・・・第９端子部 ＴＭ１０・・・第１０端子部 ＴＭ１１・・・第１１端子部 1: Spacer member 2: Lens holding member 2D: Movable-side base portion 2D1: First movable-side base portion 2D2: Second movable-side base portion 2S: Protruding portion 2S1: First protruding portion 2S2: Second protruding portion 2T: Projecting portion 2V: Projecting portion 4: Cover member 4A: First outer peripheral wall portion 4A1: First side plate portion 4A2: Second side plate portion 4A3: Third side plate portion 4A4: Fourth side plate portion 4B: Top plate portion 4C: Second outer peripheral wall portion 4C1: First side plate portion 4C2: Second side plate portion 4C3: Third side plate portion 4C4: Fourth side plate portion 4D: Bottom plate portion 4E: Corner portion 4E1: First corner portion 4E2: Second corner portion 4E3: Third corner portion 4E4: Fourth corner portion Reference Signs List 4k: Opening 4L: Lower cover member 4m: Opening 4s: Storage section 4U: Upper cover member 5: Metal member 5F: Fixed side metal member 5F1: First fixed side terminal plate 5F2: Second fixed side terminal plate 5F3: Third fixed side terminal plate 5F4: Fourth fixed side terminal plate 5F5: Fifth fixed side terminal plate 5F6: Sixth fixed side terminal plate 5F7: Seventh fixed side terminal plate 5F8: Eighth fixed side terminal plate 5M: Movable side metal member 5M1: First movable side terminal plate 5M2: Second movable side terminal plate 5M3: Third movable side terminal plate 5M4: Fourth movable side terminal plate 6: Leaf spring 6A: First leaf spring 6A1: First part 6A2: Second part 6A3: Third part 6A4: Fourth part 6A5: Fifth part 6AH1...First through hole 6AH2...Second through hole 6AH3...Third through hole 6AH4...Fourth through hole 6AH5...Fifth through hole 6AH6...Sixth through hole 6B...Second leaf spring 6B1...First part 6B2...Second part 6B3...Third part 6B4...Fourth part 6B5...Fifth part 6BH1...First through hole 6BH2...Second through hole 6BH3...Third through hole 6BH4...Fourth through hole 6BH5...Fifth through hole 6BH6...Sixth through hole 10...First magnetic member 10A...First magnet 10B...Second magnet 12...Cylindrical part 18...Base member 18D...Fixed side base part 18D1...First fixed side base part 18D2...Second fixed side base part 18E...side portion 18E1...first side portion 18E2...second side portion 18E3...third side portion 18E4...fourth side portion 18K...opening 18S...stopper protrusion 18S1...first stopper protrusion 18S2...second stopper protrusion 18T...projection portion 18V...projection portion 101...lens drive device AH...rectangular hole BF...bottom surface BW...bottom portion CF...outer circumferential surface CM...conductive member CM1...first conductive member CM2...second conductive member CM3...third conductive member CM4...fourth conductive member CM5...fifth conductive member CM6...sixth conductive member CM7...seventh conductive member CM8...eighth conductive member CM9...ninth conductive member CM10...tenth conductive member CM11...eleventh conductive member CP9: 9th joint surface CP10: 10th joint surface CSL: lower opposing surface CSL1: lower opposing surface CSL2: lower opposing surface CSU: upper opposing surface CSU1: upper opposing surface CSU2: upper opposing surface CT1 to CT12: connection portions CV: recess for stopper CV1: recess for first stopper CV2: recess for second stopper ED1: first connection portion ED2: second connection portion ED3: third connection portion ED4: fourth connection portion ED5: fifth connection portion ED6: sixth connection portion ED7: seventh connection portion ED8: eighth connection portion ED11: 11th connection portion EP: end surface EW: mounting surface EW1: first mounting surface EW2: second mounting surface EW3: third mounting surface EW4: Fourth mounting surface HL1: Upper circular hole HL2: Lower circular hole HR: Storage portion HR1: First storage portion HR2: Second storage portion J1-J4: Holding portion JD: Optical axis MB: Movable side member MG: Second magnetic member MG1: First metal plate MG2: Second metal plate MK: Drive mechanism RG: Fixed side member RH: Through hole RS1, RS2: Recess SA: Shape memory alloy wire SA1: First wire SA2: Second wire SA3: Third wire SA4: Fourth wire SA5: Fifth wire SA6: Sixth wire SA7: Seventh wire SA8: Eighth wire SB: Recess for stopper SB1: Recess for first stopper SB2: Recess for second stopper SD: Bonding material SF: Inner surface ST...Stopper part ST1...First stopper part ST2...Second stopper part ST3...Third stopper part ST4...Fourth stopper part TF...Top surface TM1...First terminal part TM2...Second terminal part TM3...Third terminal part TM4...Fourth terminal part TM5...Fifth terminal part TM6...Sixth terminal part TM7...Seventh terminal part TM8...Eighth terminal part TM9...Ninth terminal part TM10...Tenth terminal part TM11...Eleventh terminal part

Claims (10)

ベース部材及びカバー部材を含む固定側部材と、
前記ベース部材と前記カバー部材とで形成される収容空間に配置されるとともに、レンズ体を保持可能なレンズ保持部材と、
前記固定側部材と前記レンズ保持部材を含む可動側部材との間に配置された複数の形状記憶合金ワイヤと、を備えたレンズ駆動装置であって、
前記レンズ保持部材は、前記ベース部材の上側に配置されており、前記形状記憶合金ワイヤへの通電によって、前記ベース部材に対して移動可能であり、
前記レンズ保持部材には、複数の異なる位置に複数の第１磁性部材が配置されるとともに、前記ベース部材には、複数の前記第１磁性部材に対応する複数の第２磁性部材が設けられており、複数の前記第１磁性部材のそれぞれが、光軸方向において、対応する前記第２磁性部材に対向し、対応する前記第２磁性部材に引き寄せられ、前記形状記憶合金ワイヤへの非通電時に前記レンズ保持部材の動きが前記ベース部材によって規制されていることを特徴とするレンズ駆動装置。 a fixed member including a base member and a cover member;
a lens holding member that is arranged in an accommodation space formed by the base member and the cover member and is capable of holding a lens body;
a plurality of shape memory alloy wires disposed between the fixed member and a movable member including the lens holding member,
the lens holding member is disposed on an upper side of the base member and is movable with respect to the base member by energizing the shape memory alloy wire;
A lens driving device characterized in that a plurality of first magnetic members are arranged at a plurality of different positions on the lens holding member, and a plurality of second magnetic members corresponding to the plurality of first magnetic members are provided on the base member, each of the plurality of first magnetic members faces the corresponding second magnetic member in the optical axis direction and is attracted to the corresponding second magnetic member, and the movement of the lens holding member is regulated by the base member when current is not applied to the shape memory alloy wire. 前記第２磁性部材は、前記ベース部材を形成する合成樹脂によって上面が覆われており、
前記非通電時において、前記ベース部材と前記レンズ保持部材とは互いに接触している、
請求項１に記載のレンズ駆動装置。 the second magnetic member has an upper surface covered with the synthetic resin forming the base member,
When the current is not applied, the base member and the lens holding member are in contact with each other.
The lens driving device according to claim 1 . 前記第１磁性部材は、磁石である、
請求項１又は２に記載のレンズ駆動装置。 The first magnetic member is a magnet.
3. The lens driving device according to claim 1. 前記第２磁性部材に対向する前記第１磁性部材の対向面の面積は、前記第１磁性部材に対向する前記第２磁性部材の対向面の面積とほぼ等しい、
請求項３に記載のレンズ駆動装置。 an area of a surface of the first magnetic member facing the second magnetic member is substantially equal to an area of a surface of the second magnetic member facing the first magnetic member;
The lens driving device according to claim 3 . 前記ベース部材には、前記形状記憶合金ワイヤに導通する導電部材が埋設されており、
前記第２磁性部材は、前記導電部材と同じ金属で形成されている、
請求項３に記載のレンズ駆動装置。 A conductive member that is electrically connected to the shape memory alloy wire is embedded in the base member,
The second magnetic member is formed of the same metal as the conductive member.
The lens driving device according to claim 3 . 前記カバー部材は、外周壁部と天板部を有し、光軸方向から見た平面視において矩形状をしており、
前記第１磁性部材は、対角配置される前記カバー部材の二つの角部のそれぞれに対応する前記レンズ保持部材の二箇所に設けられている、
請求項１乃至５の何れかに記載のレンズ駆動装置。 the cover member has an outer peripheral wall portion and a top plate portion, and is rectangular in plan view when viewed in the optical axis direction;
the first magnetic member is provided at two locations on the lens holding member corresponding to two diagonally arranged corners of the cover member,
6. The lens driving device according to claim 1. 前記レンズ保持部材は、光軸方向に延びるとともに前記レンズ体が内部に収容される筒状部と、前記二つの角部のそれぞれに対応する位置に、前記筒状部から前記二つの角部のそれぞれに向かって突出する突設部とを有し、
前記突設部には、底部を有する収容部が設けられており、
前記収容部には、前記第１磁性部材が収容されている、
請求項６に記載のレンズ駆動装置。 the lens holding member has a cylindrical portion extending in the optical axis direction and housing the lens body therein, and protruding portions protruding from the cylindrical portion toward the two corners at positions corresponding to the two corners, respectively;
The protruding portion is provided with a receiving portion having a bottom portion,
The first magnetic member is accommodated in the accommodation portion.
7. The lens driving device according to claim 6. 前記ベース部材は、前記突設部の外周面を覆うように対向する内周面を有する壁部を有し、
前記突設部と前記壁部とは、少なくとも光軸回りに回転しようとする前記レンズ保持部材の動きを規制するストッパ部を構成している、
請求項７に記載のレンズ駆動装置。 the base member has a wall portion having an inner peripheral surface facing the outer peripheral surface of the protruding portion so as to cover the outer peripheral surface of the protruding portion,
The protrusion and the wall constitute a stopper portion that restricts the movement of the lens holding member that tends to rotate at least around the optical axis.
The lens driving device according to claim 7. 前記ベース部材は、前記二つの角部のそれぞれの近傍に位置する壁部を有し、
前記壁部には、非磁性金属で形成された第１導体板が固定されており、
前記レンズ保持部材は、前記カバー部材における前記二つの角部とは異なる別の二つの角部のそれぞれの近傍に位置する固定部を有し、
前記固定部には、非磁性金属で形成された第２導体板が固定されており、
前記形状記憶合金ワイヤは、前記第１導体板と前記第２導体板との間に設けられている、
請求項６又は７に記載のレンズ駆動装置。 The base member has a wall portion located near each of the two corner portions,
A first conductive plate made of a non-magnetic metal is fixed to the wall portion,
the lens holding member has fixing portions located near two corners of the cover member that are different from the two corners,
A second conductive plate made of a non-magnetic metal is fixed to the fixed portion,
The shape memory alloy wire is provided between the first conductive plate and the second conductive plate.
8. The lens driving device according to claim 6 or 7. 請求項１乃至９の何れかに記載のレンズ駆動装置と、
前記レンズ体と、
前記レンズ体に対向する撮像素子と、を有する、
カメラモジュール。 A lens driving device according to any one of claims 1 to 9,
The lens body;
An imaging element facing the lens body,
Camera module.
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