JP6481242B2

JP6481242B2 - LENS DRIVE DEVICE, CAMERA DEVICE, AND ELECTRONIC DEVICE

Info

Publication number: JP6481242B2
Application number: JP2014220667A
Authority: JP
Inventors: 純一多田; 裕貴成島
Original assignee: 新シコー科技株式会社
Priority date: 2014-10-29
Filing date: 2014-10-29
Publication date: 2019-03-13
Anticipated expiration: 2034-10-29
Also published as: CN111897084B; CN111897084A; CN105319663B; CN205015548U; JP2016090616A; CN105319663A

Description

本発明は、レンズ駆動装置、カメラ装置及び電子機器に関する。 The present invention relates to a lens driving device, a camera device, and an electronic apparatus.

携帯電話やスマートフォン等の電子機器には、小型カメラが搭載されている。この種の小型カメラには、自動焦点タイプのものがある。自動焦点タイプの小型カメラには、レンズを駆動するレンズ駆動装置が設けられている。 Electronic devices such as mobile phones and smartphones are equipped with small cameras. This type of small camera is of the autofocus type. A small lens of an autofocus type is provided with a lens driving device that drives a lens.

この種のレンズ駆動装置に関連する従来例として特許文献１及び特許文献２に記載されたものがある。
特許文献１は、レンズ駆動ユニットを開口部より筐体ユニットの収納部に収納し、駆動軸を支持部に支持させる工程と、蓋部材を筐体ユニットに装着して開口部を被覆し、圧接部を駆動軸に圧接させる工程と、を有することを特徴とするレンズ駆動装置の製造方法を開示する。 As conventional examples related to this type of lens driving device, there are those described in Patent Document 1 and Patent Document 2.
In Patent Document 1, the lens drive unit is housed in the housing unit housing from the opening, the drive shaft is supported by the support, the lid member is attached to the housing unit, the opening is covered, A method of manufacturing a lens driving device, comprising: a step of pressing a portion against a driving shaft.

特許文献２は、撮像素子に取り付けられるベース部材と，前記ベース部材に取り付けられたカバー部材とを有し，ベース部材とカバー部材との間にレンズを軸方向に移動可能に保持するレンズユニットにおいて，レンズまたはレンズホルダを保持するとともに，カバー部材に軸方向に移動可能に取り付けられたスライダを有するレンズ駆動装置を開示する。 Patent Document 2 is a lens unit that includes a base member attached to an image sensor and a cover member attached to the base member, and holds the lens movably in the axial direction between the base member and the cover member. A lens driving device having a slider that holds a lens or a lens holder and is attached to a cover member so as to be movable in the axial direction is disclosed.

特開２０１０−２４３９８５号公報JP 2010-243985 A 特開２００６−２３５５８３号公報JP 2006-235583 A

上記従来例においては、いずれも圧電アクチュエータが用いられ、この圧電アクチュエータによりレンズ枠又はスライダを駆動するようになっている。レンズ枠又はスライダは圧電アクチュエータの駆動軸と摩擦接触して支持されている。
しかしながら、上記従来例のいずれも、レンズ中心を挟んだ駆動軸の反対側へレンズ枠又はスライダから腕を延ばし、この腕に案内軸を設け、この案内軸にレンズ枠又はスライダを係合することにより、レンズ枠又はスライダの反駆動軸側を支持していた。
このため、上記従来例においては、レンズ中心と駆動軸を結ぶ方向が大きくなり、レンズ駆動装置を小型化することができないという問題があった。 In each of the above conventional examples, a piezoelectric actuator is used, and the lens frame or slider is driven by this piezoelectric actuator. The lens frame or slider is supported in frictional contact with the drive shaft of the piezoelectric actuator.
However, in any of the above conventional examples, an arm is extended from the lens frame or slider to the opposite side of the drive shaft across the lens center, a guide shaft is provided on the arm, and the lens frame or slider is engaged with the guide shaft. Thus, the lens frame or the non-driving shaft side of the slider is supported.
For this reason, in the above conventional example, there is a problem that the direction connecting the lens center and the drive shaft becomes large, and the lens drive device cannot be miniaturized.

本発明は、レンズ中心と駆動軸とを結ぶ方向の幅を小さくすることができるレンズ駆動装置、カメラ装置及び電子機器を提供することを目的としている。 It is an object of the present invention to provide a lens driving device, a camera device, and an electronic apparatus that can reduce the width in the direction connecting the lens center and the driving shaft.

本発明の一つの態様は、レンズを支持するレンズ支持体と、前記レンズ支持体を駆動するように前記レンズ支持体に連結された駆動軸と、前記レンズ支持体及び前記駆動軸を収納する筐体と、を有し、前記筐体は、第一の側面、前記第一の側面に続く第二の側面及び前記第二の側面に続く第三の側面を有し、前記駆動軸は、前記レンズ支持体を挟んで前記第二の側面とは反対側に配置され、前記筐体は、前記第一の側面及び第二の側面並びに前記第二の側面及び前記第三の側面との間の角部にそれぞれ案内部が形成され、前記レンズ支持体に前記案内部に対応してそれぞれ形成された被案内部が前記案内部にそれぞれ当接し、前記レンズ支持体を案内部間で挟んで案内するようにしたレンズ駆動装置である。 One aspect of the present invention includes a lens support that supports a lens, a drive shaft that is coupled to the lens support so as to drive the lens support, and a housing that houses the lens support and the drive shaft. The housing has a first side, a second side following the first side, and a third side following the second side, and the drive shaft is The lens support is disposed on the opposite side to the second side surface, and the housing is between the first side surface and the second side surface, and the second side surface and the third side surface. Guide portions are formed at the corners, and guided portions respectively formed on the lens support body corresponding to the guide portions are in contact with the guide portions, and the lens support body is sandwiched between the guide portions and guided. This is a lens driving device.

本発明の他の態様は、レンズを支持するレンズ支持体と、前記レンズ支持体を駆動するように前記レンズ支持体に連結された駆動軸と、前記レンズ支持体及び前記駆動軸を収納する筐体と、を有し、前記筐体は、第一の側面、前記第一の側面に続く第二の側面及び前記第二の側面に続く第三の側面を有し、前記駆動軸は、前記レンズ支持体を挟んで前記第二の側面とは反対側に配置され、前記筐体は、前記第一の側面及び前記第三の側面に互いに対向する案内部が形成され、前記レンズ支持体に前記案内部に対応してそれぞれ形成された被案内部が前記案内部にそれぞれ当接し、前記レンズ支持体を案内部間で挟んで案内するようにしたレンズ駆動装置である。 Another aspect of the present invention includes a lens support that supports a lens, a drive shaft that is coupled to the lens support so as to drive the lens support, and a housing that houses the lens support and the drive shaft. The housing has a first side, a second side following the first side, and a third side following the second side, and the drive shaft is The lens support is disposed on the opposite side of the second side surface, and the casing is formed with guide portions facing each other on the first side surface and the third side surface. In the lens driving device, guided portions respectively formed corresponding to the guide portions are in contact with the guide portions, and the lens support is sandwiched between the guide portions.

好適には、前記案内部及び前記被案内部の少なくとも一方には他方に突出する突起が形成されている。 Preferably, at least one of the guide portion and the guided portion is formed with a protrusion protruding to the other.

好適には、前記駆動軸は、振動部材に固定され、前記駆動軸及び前記振動部材により圧電アクチュエータが構成されている。 Preferably, the drive shaft is fixed to a vibration member, and the drive shaft and the vibration member constitute a piezoelectric actuator.

好適には、レンズ支持体は支持機構を介して前記駆動軸に支持され、前記支持機構は、前記レンズ支持体に固定された押圧部材と、前記駆動軸と摩擦接触するように前記駆動軸を挟持する挟持部材と、を有し、前記押圧部材に設けられた付勢部が前記挟持部材を前記駆動軸に向けて付勢するようにする。 Preferably, the lens support is supported by the drive shaft via a support mechanism, and the support mechanism is configured so that the pressing shaft fixed to the lens support and the drive shaft are in frictional contact with the drive shaft. And a biasing portion provided on the pressing member biases the clamping member toward the drive shaft.

好適には、前記筐体の前記第一の側面及び第三の側面には、内部に向けて突出する支持用突部が一体に形成され、前記駆動軸は、弾性部材を介して前記支持用突部に挟まれて振動自在に支持されている。 Preferably, the first and third side surfaces of the housing are integrally formed with support protrusions protruding toward the inside, and the drive shaft is supported by the support member via an elastic member. It is sandwiched between the protrusions and supported so as to freely vibrate.

本発明の他の態様は、レンズと、前記レンズを支持するレンズ支持体と、前記レンズ支持体を駆動するように前記レンズ支持体に連結された駆動軸と、前記レンズ支持体及び前記駆動軸を収納する筐体と、前記レンズの光軸上に設けられた画像センサと、を有し、前記筐体は、第一の側面、前記第一の側面に続く第二の側面及び前記第二の側面に続く第三の側面を有し、前記駆動軸は、前記レンズ支持体を挟んで前記第二の側面とは反対側に配置され、前記筐体は、前記第一の側面及び第二の側面並びに前記第二の側面及び前記第三の側面との間の角部にそれぞれ案内部が形成され、前記レンズ支持体に前記案内部に対応してそれぞれ形成された被案内部が前記案内部にそれぞれ当接し、前記レンズ支持体を案内部間で挟んで案内するようにしたカメラ装置である。 Another aspect of the present invention includes a lens, a lens support that supports the lens, a drive shaft that is coupled to the lens support so as to drive the lens support, the lens support, and the drive shaft. And an image sensor provided on the optical axis of the lens, wherein the housing includes a first side surface, a second side surface following the first side surface, and the second side. The drive shaft is disposed on the opposite side of the second side surface with the lens support interposed therebetween, and the housing includes the first side surface and the second side surface. Guide portions are formed at corners between the side surface of the lens and the second side surface and the third side surface, and guided portions respectively formed on the lens support corresponding to the guide portions are the guides. So that the lens support is sandwiched between the guides A camera apparatus.

本発明の他の態様は、レンズと、前記レンズを支持するレンズ支持体と、前記レンズ支持体を駆動するように前記レンズ支持体に連結された駆動軸と、前記レンズ支持体及び前記駆動軸を収納する筐体と、前記レンズの光軸上に設けられた画像センサと、を有し、前記筐体は、第一の側面、前記第一の側面に続く第二の側面及び前記第二の側面に続く第三の側面を有し、前記駆動軸は、前記レンズ支持体を挟んで前記第二の側面とは反対側に配置され、前記筐体は、前記第一の側面及び前記第三の側面に互いに対向する案内部が形成され、前記レンズ支持体に前記案内部に対応してそれぞれ形成された被案内部が前記案内部にそれぞれ当接し、前記レンズ支持体を案内部間で挟んで案内するようにしたカメラ装置である。 Another aspect of the present invention includes a lens, a lens support that supports the lens, a drive shaft that is coupled to the lens support so as to drive the lens support, the lens support, and the drive shaft. And an image sensor provided on the optical axis of the lens, wherein the housing includes a first side surface, a second side surface following the first side surface, and the second side. The drive shaft is disposed on the opposite side of the second side surface with the lens support interposed therebetween, and the housing includes the first side surface and the first side surface. Guiding portions facing each other are formed on the three side surfaces, guided portions respectively formed on the lens support body corresponding to the guide portions are in contact with the guide portions, and the lens support body is interposed between the guide portions. It is a camera device that is guided by pinching.

本発明のさらに他の態様は、上記のカメラ装置を有する電子機器である。 Still another embodiment of the present invention is an electronic apparatus having the above camera device.

本発明によれば、筐体の角部に形成された案内部によりレンズ支持体を支持するようにしたので、レンズ中心と駆動軸とを結ぶ方向の幅を小さくすることができる。 According to the present invention, since the lens support is supported by the guide portion formed at the corner of the housing, the width in the direction connecting the lens center and the drive shaft can be reduced.

本発明の一実施形態に係るカメラ装置を示す斜視図である。It is a perspective view which shows the camera apparatus which concerns on one Embodiment of this invention. 本発明の一実施形態に係るカメラ装置を示し、図１のＡ−Ａ線断面図である。1 shows a camera device according to an embodiment of the present invention and is a cross-sectional view taken along line AA of FIG. 本発明の一実施形態に係るカメラ装置を示し、図１のＢ−Ｂ線断面図である。1 shows a camera device according to an embodiment of the present invention and is a cross-sectional view taken along line BB in FIG. 本発明の一実施形態に用いたアクチュエータの斜視図である。It is a perspective view of an actuator used for one embodiment of the present invention. 本発明の一実施形態に用いたアクチュエータの断面と駆動回路とを示す図である。It is a figure which shows the cross section of the actuator used for one Embodiment of this invention, and a drive circuit. 本発明の一実地形態における支持機構及びその周辺を示す斜視図である。It is a perspective view which shows the support mechanism and its periphery in one actual form of this invention. 本発明の一実施形態において、図３のＣ−Ｃ線断面図である。FIG. 4 is a cross-sectional view taken along line CC of FIG. 3 in the embodiment of the present invention. 本発明の一実施形態におけるアクチュエータの振動部材及びその周辺を示す斜視図である。It is a perspective view which shows the vibration member of the actuator in one Embodiment of this invention, and its periphery.

本発明の一実施形態を図面に基づいて説明する。
図１乃至図３において、本発明の一実施形態に係るカメラ装置１０が示されている。カメラ装置１０は、例えば携帯電話やスマートフォン等の電子機器に用いられる自動焦点式の小型カメラ装置として使用される。 An embodiment of the present invention will be described with reference to the drawings.
1 to 3 show a camera apparatus 10 according to an embodiment of the present invention. The camera device 10 is used as an autofocus small camera device used for electronic devices such as mobile phones and smartphones.

カメラ装置１０は、一方向に長く形成された直方体状の筐体１２を有する。
この筐体１２内には、後述するズームレンズ１４とフォーカスレンズ１６、並びにこれらズームレンズ１４及びフォーカスレンズ１６をそれぞれ駆動するレンズ駆動装置１８，１８がそれぞれ設けられている。
なお、図１においては、わかりやすくするために筐体１２は二点鎖線で示されている。 The camera device 10 includes a rectangular parallelepiped housing 12 that is long in one direction.
In the casing 12, there are provided a zoom lens 14 and a focus lens 16, which will be described later, and lens driving devices 18 and 18 for driving the zoom lens 14 and the focus lens 16, respectively.
In FIG. 1, the housing 12 is indicated by a two-dot chain line for easy understanding.

筐体１２は、基部となる第一の部材２０と、第一の側面２２及び第二の側面２４を構成する第二の部材３２と、第三の側面２６を構成する第三の部材３３と、第四の側面２８を構成する第四の部材３４と、第五の側面３０を構成する第五の部材３６とを有する。 The housing 12 includes a first member 20 serving as a base, a second member 32 constituting the first side surface 22 and the second side surface 24, and a third member 33 constituting the third side surface 26. The fourth member 34 constituting the fourth side surface 28 and the fifth member 36 constituting the fifth side surface 30 are included.

第一の部材２０は、カメラ装置１０の長手方向一端に設けられている。この第一の部材２０の上面には、受光窓３８が形成されている。この受光窓３８の下方にはプリズムレンズ４０が配置されている。プリズムレンズ４０は、周知のように、例えば４５°に形成された反射面４２を有し、上方から受光窓３８を介して受け入れられた光を反射面４２により反射させ、カメラ装置１０の長手方向に導くようになっている。また、この第一の部材２０には、プリズムレンズ４０に続いて第一の中間レンズ４４が配置されている。この第一の部材２０には、第二の部材３２、第三の部材３３及び第四の部材３４の一端が固定されている。また、第五の部材３６は、第二の部材３２、第三の部材３３及び第四の部材３４の他端に固定されている。 The first member 20 is provided at one end of the camera device 10 in the longitudinal direction. A light receiving window 38 is formed on the upper surface of the first member 20. A prism lens 40 is disposed below the light receiving window 38. As is well known, the prism lens 40 has a reflection surface 42 formed at, for example, 45 °, reflects light received from above via the light receiving window 38, and reflects the light in the longitudinal direction of the camera device 10. Is supposed to lead to. The first member 20 is provided with a first intermediate lens 44 subsequent to the prism lens 40. One end of a second member 32, a third member 33, and a fourth member 34 is fixed to the first member 20. The fifth member 36 is fixed to the other ends of the second member 32, the third member 33, and the fourth member 34.

第二の部材３２、第三の部材３３及び第四の部材３４から構成された第一の側面２２、第二の側面２４、第三の側面２６及び第四の側面２８は、図２及び図３に示すように、断面方形状の枠を構成している。即ち、第一の側面２２は、例えば底面であり、この第一の側面２２から第二の側面２４が９０°となるように一体として立ち上がっている。また、第三の側面２４は、例えば上面であり、第二の側面から９０°となるように続いている。第四の側面２６は、第三の側面２４から９０°となるように下方に向けられており、該第四の側面２４の下端で底面である第一の側面２２に固定されている。 The first side surface 22, the second side surface 24, the third side surface 26 and the fourth side surface 28 composed of the second member 32, the third member 33 and the fourth member 34 are shown in FIGS. As shown in FIG. 3, a frame having a square cross section is formed. That is, the first side surface 22 is, for example, a bottom surface, and rises integrally from the first side surface 22 so that the second side surface 24 is 90 °. The third side surface 24 is, for example, an upper surface and continues from the second side surface at 90 °. The fourth side surface 26 faces downward from the third side surface 24 at 90 °, and is fixed to the first side surface 22 that is the bottom surface at the lower end of the fourth side surface 24.

図１に示すように、第一の側面２２乃至第四の側面２８に囲まれた空間内には、第一の中間レンズ４４から長手方向に向けてズームレンズ１４、第二の中間レンズ４６及びフォーカスレンズ１６が配置されている。さらにフォーカスレンズ１６の先には画像センサ４８が配置されている。この画像センサ４８は、第五の部材３６に形成された画像センサ取付け孔５０（図３に示す）に嵌め込まれて固定されている。
第一の中間レンズ４４、ズームレンズ１４、第二の中間レンズ４６及びフォーカスレンズ１６は、一つの光軸に沿って配置され、プリズムレンズ４０を介して取り入れた光を画像センサ４８に結像するようになっている。 As shown in FIG. 1, in the space surrounded by the first side surface 22 to the fourth side surface 28, the zoom lens 14, the second intermediate lens 46, and the like from the first intermediate lens 44 toward the longitudinal direction. A focus lens 16 is disposed. Further, an image sensor 48 is disposed at the tip of the focus lens 16. The image sensor 48 is fitted and fixed in an image sensor mounting hole 50 (shown in FIG. 3) formed in the fifth member 36.
The first intermediate lens 44, the zoom lens 14, the second intermediate lens 46, and the focus lens 16 are arranged along one optical axis, and image the light taken in through the prism lens 40 on the image sensor 48. It is like that.

レンズ駆動装置１８，１８は、ズームレンズ支持体５２とフォーカスレンズ支持体５４とを有する。ズームレンズ支持体５２とフォーカスレンズ支持体５４は、それぞれ方形状の枠として形成され、ズームレンズ１４とフォーカスレンズ１６とを支持している。ズームレンズ支持体５２とフォーカスレンズ支持体５４は、第一の側面２２乃至第四の側面２８に囲まれた空間内でカメラ装置１０の長手方向に移動自在であるよう支持されている。
なお、第二の中間レンズ４６は、第二の中間レンズ支持体５６に支持されているが、ズームレンズ１４，フォーカスレンズ１６とは異なり、筐体１２に固定されている。 The lens driving devices 18 and 18 have a zoom lens support body 52 and a focus lens support body 54. The zoom lens support 52 and the focus lens support 54 are each formed as a rectangular frame, and support the zoom lens 14 and the focus lens 16. The zoom lens support body 52 and the focus lens support body 54 are supported so as to be movable in the longitudinal direction of the camera device 10 in a space surrounded by the first side surface 22 to the fourth side surface 28.
The second intermediate lens 46 is supported by the second intermediate lens support 56, but is fixed to the housing 12, unlike the zoom lens 14 and the focus lens 16.

また、レンズ駆動装置１８，１８は、アクチュエータ５８，５８を有する。アクチュエータ５８，５８は、図４に示すように、例えばバイモルフ型の圧電式のもので、振動部材６０と、この振動部材６０に固定された駆動軸６２とを有する。振動部材６０は、それぞれ２つの平板状の圧電素子６４，６６を有する。この圧電素子６４，６６の間には、同じく平板状の電極板６８が介在されている。すなわち、圧電素子６４，６６と電極板６８とは互いの板面を合わせて固着されている。圧電素子６４，６６の表裏面には、図５に示すように、電極層７０，７２が形成されている。駆動軸６２は、一方の圧電素子６４の電極層７０に接着剤７４を介して固着されている。電極板６８は、弾性を有する例えば金属板から構成されている。この電極板６８からは通電用接続部７６が１つの辺の略中央から突出して形成されている。 The lens driving devices 18 and 18 include actuators 58 and 58. As shown in FIG. 4, the actuators 58 and 58 are, for example, a bimorph piezoelectric type, and include a vibration member 60 and a drive shaft 62 fixed to the vibration member 60. The vibration member 60 includes two flat piezoelectric elements 64 and 66, respectively. A flat electrode plate 68 is also interposed between the piezoelectric elements 64 and 66. That is, the piezoelectric elements 64 and 66 and the electrode plate 68 are fixed with their plate surfaces aligned. Electrode layers 70 and 72 are formed on the front and back surfaces of the piezoelectric elements 64 and 66 as shown in FIG. The drive shaft 62 is fixed to the electrode layer 70 of one piezoelectric element 64 via an adhesive 74. The electrode plate 68 is made of, for example, a metal plate having elasticity. From this electrode plate 68, an energizing connection portion 76 is formed so as to protrude from the approximate center of one side.

図５に示すように、振動部材６０の表面に露出する電極層７０，７２は、例えば電源制御部７８のプラス側に接続され、電極板６８は、通電用接続部７６を介して電源制御部７８のマイナス側に接続されている。一方の電極層７０と電極板６８との間にパルス電圧を繰り返し印加すると、一方の圧電素子６４に通電されてこの一方の圧電素子６４が伸び縮みし、振動部材６０は一方向に向けてお椀状に変形するのと電極板６８の弾性で急速に元の平板状に戻ろうとするのを繰り返す。それに伴い駆動軸６２も軸方向に微小な往復移動を繰り返す。他方の電極層７２と電極板６８との間にパルス電圧を繰り返し印加すると、他方の圧電素子６６が伸び縮みし、振動部材６０は他方向に向けてお椀状に変形するのと電極板６８の弾性で急速に元の平板状に戻ろうとするのを繰り返す。それに伴い駆動軸６２も軸方向に微小な往復移動を繰り返す。
なお、この実施形態においては、アクチュエータ５８，５８としてバイモルフ型の圧電アクチュエータを用いたが、これに限定されるものではなく、他の形式の圧電アクチュエータや静電式のアクチュエータを用いてもよい。 As shown in FIG. 5, the electrode layers 70 and 72 exposed on the surface of the vibration member 60 are connected to, for example, the plus side of the power control unit 78, and the electrode plate 68 is connected to the power control unit via the energization connection unit 76. It is connected to the negative side of 78. When a pulse voltage is repeatedly applied between one electrode layer 70 and the electrode plate 68, one piezoelectric element 64 is energized, the one piezoelectric element 64 expands and contracts, and the vibrating member 60 faces in one direction. It is repeatedly deformed into the shape and rapidly returned to the original flat shape due to the elasticity of the electrode plate 68. Along with this, the drive shaft 62 repeats minute reciprocation in the axial direction. When a pulse voltage is repeatedly applied between the other electrode layer 72 and the electrode plate 68, the other piezoelectric element 66 expands and contracts, and the vibration member 60 deforms in a bowl shape in the other direction. Repeatedly trying to return to the original flat shape with elasticity. Along with this, the drive shaft 62 repeats minute reciprocation in the axial direction.
In this embodiment, the bimorph type piezoelectric actuator is used as the actuators 58, 58. However, the present invention is not limited to this, and other types of piezoelectric actuators or electrostatic actuators may be used.

図１乃至図３に示すように、アクチュエータ５８，５８は、筐体１２内にあって、駆動軸６２，６２が長手方向で互いに向きが異なるように、ズームレンズ支持体５２及びフォーカスレンズ支持体５４と第四の側面２８との間に形成された空間に配置されている。ズームレンズ支持体５２とフォーカスレンズ支持体５４は、後述する支持機構８０，８０を介して駆動軸６２，６２に摺動自在に支持されている。 As shown in FIGS. 1 to 3, the actuators 58 and 58 are in the housing 12, and the zoom lens support 52 and the focus lens support so that the drive shafts 62 and 62 are different from each other in the longitudinal direction. It is arranged in a space formed between 54 and the fourth side face 28. The zoom lens support body 52 and the focus lens support body 54 are slidably supported on the drive shafts 62 and 62 via support mechanisms 80 and 80 described later.

ズームレンズ支持体５２，フォーカスレンズ支持体５４を挟んで支持機構８０，８０の反対側においては、第一の側面２２と第二の側面２４との間の角部と第二の側面２４と第三の側面２６との間の角部には、案内部８２，８４が形成されている。この実施形態においては、案内部８２は、上方及び右側（第四の側面２８方向）に突出している。また、案内部８４は、下方及び右側（第四の側面２８方向）に突出している。案内部８２，８４は、筐体１２の長手方向に沿って形成されている。
ただし、本実施形態においては、案内部８２は、第二の中間レンズ支持体５６の部分には形成されておらず、第二の中間レンズ支持体５６の前後部分が案内部８２に挟まれるようになっており、第二の中間レンズ支持体５６の筐体１２に対する位置決めがなされている。 On the opposite side of the support mechanisms 80, 80 across the zoom lens support 52 and the focus lens support 54, the corners between the first side 22 and the second side 24, the second side 24 and the first side 24. Guide portions 82 and 84 are formed at corners between the three side surfaces 26. In this embodiment, the guide part 82 protrudes upward and to the right (in the direction of the fourth side face 28). Moreover, the guide part 84 protrudes in the downward direction and the right side (4th side surface 28 direction). The guide portions 82 and 84 are formed along the longitudinal direction of the housing 12.
However, in the present embodiment, the guide portion 82 is not formed on the portion of the second intermediate lens support 56, and the front and rear portions of the second intermediate lens support 56 are sandwiched between the guide portions 82. The second intermediate lens support 56 is positioned with respect to the housing 12.

一方、ズームレンズ支持体５２，フォーカスレンズ支持体５４には、案内部８２，８４に対応して被案内部８６，８８が第二の側面２４側の上下角部に形成されている。この実施形態においては、被案内部８６，８８は、案内部８２，８４の突出に対応した凹溝９０，９２が長手方向に形成され、案内部８２，８４と被案内部８６，８８とによりレールが構成されている。また、凹溝９０，９２の上下面には、突起９４，９６が案内部８２，８４に向けて突出するように形成されている。突起９４，９６は、例えば半球状であり、ズームレンズ支持体５２，フォーカスレンズ支持体５４に複数個所（この実施形態においては案内部８６、８８に沿った二箇所）に形成されている。 On the other hand, on the zoom lens support 52 and the focus lens support 54, guided portions 86 and 88 are formed at the upper and lower corners on the second side surface 24 side corresponding to the guide portions 82 and 84, respectively. In this embodiment, the guided portions 86 and 88 have concave grooves 90 and 92 corresponding to the protrusions of the guide portions 82 and 84 formed in the longitudinal direction, and the guided portions 82 and 84 and the guided portions 86 and 88 Rails are configured. Protrusions 94 and 96 are formed on the upper and lower surfaces of the concave grooves 90 and 92 so as to protrude toward the guide portions 82 and 84. The protrusions 94 and 96 are, for example, hemispherical, and are formed at a plurality of locations (two locations along the guide portions 86 and 88 in this embodiment) on the zoom lens support 52 and the focus lens support 54.

前述した案内部８２，８４の上下面には、被案内部８６，８８の突起９４，９６の先端が当接する。ズームレンズ支持体５２とフォーカスレンズ支持体５４とは、第二の側面２４の上下角部に形成された案内部８２，８４で挟まれるようにして筐体１２の長手方向に沿って摺動自在に支持される。したがって、ズームレンズ支持体５２とフォーカスレンズ支持体５４は、それぞれ駆動軸６２、６２を中心とする回転の動き（被案内部８６、８８における上下方向の動き）が規制される。また、第二の側面２４とズームレンズ支持体５２，フォーカスレンズ支持体５４とは、平行でほとんど隙間がなく、レンズ中心と駆動軸６２，６２とを結ぶ方向（図２，図３では左右水平方向）の幅を小さくすることができる。また、被案内部８６，８８は突起９４，９６の先端のみが当接するので、ズームレンズ支持体５２，フォーカスレンズ支持体５４の筐体１２との接触面積が小さく、ズームレンズ支持体５２，フォーカスレンズ支持体５４と筐体１２との間に生じる摩擦を少なくしてズームレンズ支持体５２，フォーカスレンズ支持体５４を筐体１２に長手方向に案内することができる。 The tips of the projections 94 and 96 of the guided portions 86 and 88 abut on the upper and lower surfaces of the guide portions 82 and 84 described above. The zoom lens support 52 and the focus lens support 54 are slidable along the longitudinal direction of the housing 12 so as to be sandwiched between guide portions 82 and 84 formed at the upper and lower corners of the second side surface 24. Supported by Accordingly, the zoom lens support body 52 and the focus lens support body 54 are restricted from rotating movements (vertical movements in the guided portions 86 and 88) around the drive shafts 62 and 62, respectively. Further, the second side surface 24, the zoom lens support body 52, and the focus lens support body 54 are parallel and have almost no gap, and the direction connecting the lens center and the drive shafts 62, 62 (horizontal horizontal in FIGS. 2 and 3). Direction) can be reduced. In addition, since only the tips of the projections 94 and 96 are in contact with the guided portions 86 and 88, the contact area between the zoom lens support 52 and the focus lens support 54 with the housing 12 is small, and the zoom lens support 52 and the focus. Friction generated between the lens support 54 and the housing 12 can be reduced, and the zoom lens support 52 and the focus lens support 54 can be guided to the housing 12 in the longitudinal direction.

突起９４、９６と案内部８４、８６とは、ズームレンズ支持体５２またはフォーカスレンズ支持体５４が前述の回転の動きをしようとするときに当接するように、わずかに隙間を空けて設ける方が常時当接するように設けるよりも好ましい。突起９４、９６の摩耗防止と不要な駆動抵抗を抑制できる。もちろん、常時当接させても構わない。また、レンズ支持体５２，５４を挟んで支持機構８０，８０の反対側の筐体１２の角部に案内部８２，８４を形成しているため、レンズ支持体５２，５４に規制の範囲内で前述の回転の動きがあっても、レンズ１４、１６の中心の動く量はそれよりも小さい。 The projections 94 and 96 and the guide portions 84 and 86 should be provided with a slight gap so that the zoom lens support body 52 or the focus lens support body 54 abuts when the rotation movement described above is about to make contact. It is more preferable than providing so that it may always contact | abut. It is possible to prevent wear of the projections 94 and 96 and suppress unnecessary driving resistance. Of course, you may always contact | abut. Further, since the guide portions 82 and 84 are formed at the corners of the casing 12 on the opposite side of the support mechanisms 80 and 80 with the lens supports 52 and 54 interposed therebetween, the lens supports 52 and 54 are within the restricted range. Thus, even if there is the aforementioned rotational movement, the amount of movement of the centers of the lenses 14 and 16 is smaller.

また、第一の側面２２及び第三の側面２６に互いに対向する案内部８２、８４が形成されたとしても良い。その際、レンズ支持体５２、５４に案内部８２、８４に対応してそれぞれ形成された被案内部８６、８８（突起９４、９６）が案内部８２、８４にそれぞれ当接し、レンズ支持体５２、５４を案内部８２、８４間で挟んで案内することが望ましい。即ち、案内部８２、８４として上下面を形成し、被案内部８６、８８をその上下面に当接させるようにしても良い。この場合、案内部８２、８４は、それぞれ第一の側面２２及び第二の側面２４並びに第二の側面２４及び第三の側面２６との間の角部に設ける必要は無く、第一の側面２２及び第三の側面２６に互いに対向して設ければ良い。
いずれにしても、案内構造として、レンズ中心を挟んだ駆動軸６２の反対側へレンズ支持体５２、５４から腕を延ばす構造としていないので、レンズ中心と駆動軸６２を結ぶ方向の寸法を小さくでき、レンズ駆動装置１８を小型化できる。 In addition, guide portions 82 and 84 that face each other on the first side surface 22 and the third side surface 26 may be formed. At that time, guided portions 86 and 88 (protrusions 94 and 96) formed on the lens supports 52 and 54 corresponding to the guide portions 82 and 84 respectively abut on the guide portions 82 and 84, respectively. 54 is preferably sandwiched between the guide portions 82 and 84 for guidance. That is, the upper and lower surfaces may be formed as the guide portions 82 and 84, and the guided portions 86 and 88 may be brought into contact with the upper and lower surfaces. In this case, the guide portions 82 and 84 do not need to be provided at the corners between the first side surface 22 and the second side surface 24 and the second side surface 24 and the third side surface 26, respectively. What is necessary is just to provide 22 and the 3rd side surface 26 facing each other.
In any case, since the arm is not extended from the lens supporters 52 and 54 to the opposite side of the drive shaft 62 across the lens center as a guide structure, the dimension in the direction connecting the lens center and the drive shaft 62 can be reduced. The lens driving device 18 can be downsized.

支持機構８０は、ズームレンズ側及びフォーカスレンズ側ともに同様の構造を有する。例えばフォーカスレンズ側について説明すると、図２及び図６に示すように、支持機構８０は、フォーカスレンズ支持体５４から第四の側面２８側へブロック状に突出した支持部９８がフォーカスレンズ支持体５４と一体に形成されている。この支持部９８には、駆動軸６２側へＶ字状に開かれた支持溝１００が駆動軸６２と平行に形成されている。また、支持部９８には、支持溝１００から続いて第四の側面２８側へ突出した嵌合部１０２，１０２が上下に形成されている。この嵌合部１０２，１０２にはそれぞれ嵌合溝１０４，１０４が形成されている。 The support mechanism 80 has the same structure on both the zoom lens side and the focus lens side. For example, the focus lens side will be described. As shown in FIGS. 2 and 6, the support mechanism 80 includes a support portion 98 that protrudes in a block shape from the focus lens support 54 toward the fourth side surface 28. And is integrally formed. In the support portion 98, a support groove 100 opened in a V shape toward the drive shaft 62 is formed in parallel with the drive shaft 62. In addition, the support portion 98 is formed with fitting portions 102, 102 that protrude from the support groove 100 toward the fourth side surface 28. Fitting grooves 104 and 104 are formed in the fitting portions 102 and 102, respectively.

挟持部材１０６，１０６は、それぞれ嵌合部１０２，１０２の嵌合溝１０４，１０４に嵌合する嵌合片部１０８，１０８と、上下の嵌合片部１０８，１０８の間に設けられた挟持部１１０，１１０とを有する。挟持部１１０，１１０は、駆動軸６２側が凹んだ略半円形状に形成されている。この挟持部１１０，１１０の間に駆動軸６２が挟まれている。挟持部１１０，１１０は、駆動軸６２とは、断面方向それぞれ上下２点（合計４点）で接触している。また、第四の側面２８側の挟持部１１０は、押圧部材１１２の付勢部１２０により駆動軸６２側に押し付けられている。そのため、上側の嵌合片部１０８または下側の嵌合片部１０８の少なくとも一方は互いに離れている。 The sandwiching members 106 and 106 are sandwiched between the fitting piece portions 108 and 108 that fit into the fitting grooves 104 and 104 of the fitting portions 102 and 102 and the upper and lower fitting piece portions 108 and 108, respectively. Parts 110 and 110. The sandwiching portions 110 and 110 are formed in a substantially semicircular shape with the drive shaft 62 side recessed. A drive shaft 62 is sandwiched between the clamping portions 110 and 110. The sandwiching portions 110 and 110 are in contact with the drive shaft 62 at two upper and lower points (four points in total) in the cross-sectional direction. Further, the clamping part 110 on the fourth side face 28 side is pressed against the drive shaft 62 side by the biasing part 120 of the pressing member 112. Therefore, at least one of the upper fitting piece 108 or the lower fitting piece 108 is separated from each other.

押圧部材１１２は、上方から見てＣ字状に形成された係止部１１４が設けられている。一方、支持部９８の上面には、上方に突出した突出部１１８が形成され、この突出部１１８に係止部１１４が突出部１１８の両側から挟み込むようにして突出部１１８の周囲に係止され、押圧部材１１２を支持部９８に固定している。このように、支持部９８の突出部１１８に押圧部材１１２の係止部１１４が嵌り込んで固定するようにしたので、支持部９８の上方への突出を少なくし、カメラ装置１０の上下方向の幅を小さくすることができる。また、押圧部材１１２は、係止部１１４から下方に延びる平板状の付勢部１２０が形成され、この付勢部１２０の弾性により挟持部１１０が駆動軸６２を挟み込んでいる。このような支持機構８０の構成により、フォーカスレンズ支持体５４が駆動軸６２に適正な摩擦を持って支持されるようになっている。 The pressing member 112 is provided with a locking portion 114 formed in a C shape when viewed from above. On the other hand, a protruding portion 118 protruding upward is formed on the upper surface of the support portion 98, and the locking portion 114 is locked around the protruding portion 118 so as to be sandwiched from both sides of the protruding portion 118. The pressing member 112 is fixed to the support portion 98. As described above, since the locking portion 114 of the pressing member 112 is fitted and fixed to the protruding portion 118 of the support portion 98, the upward protrusion of the support portion 98 is reduced, and the camera device 10 is moved in the vertical direction. The width can be reduced. Further, the pressing member 112 is formed with a flat plate-like biasing portion 120 extending downward from the locking portion 114, and the clamping portion 110 sandwiches the drive shaft 62 by the elasticity of the biasing portion 120. With such a configuration of the support mechanism 80, the focus lens support 54 is supported on the drive shaft 62 with appropriate friction.

また、それぞれの駆動軸６２，６２は、例えば根元部分と先端部分の２箇所でそれぞれ筐体１２に振動自在であるように弾性体からなるブッシュ（弾性部材）１２２を介して筐体１２に支持されている。 The drive shafts 62 and 62 are supported on the housing 12 via bushes (elastic members) 122 made of an elastic body so that the housing 12 can vibrate at two locations, for example, a root portion and a tip portion. Has been.

即ち、図７にも示すように、ブッシュ１２２は、左右両側に配置されたフランジ部１２４，１２４と、該フランジ部１２４，１２４間に配置された噛み合わせ部１２６とを有する。噛み合わせ部１２６は、例えば周方向が円である凹部として形成されている。このブッシュ１２２の中心には、挿入孔１２８が形成され、この挿入孔１２８に駆動軸６２が挿入孔１２８を押し広げるようにして挿入されている。そして、振動部材６０から遠い方のブッシュ１２２と駆動軸６２とは接着固定されるが、近い方のブッシュ１２２と駆動軸６２とは接着されない。 That is, as shown in FIG. 7, the bush 122 includes flange portions 124 and 124 disposed on both the left and right sides, and a meshing portion 126 disposed between the flange portions 124 and 124. The meshing portion 126 is formed as a recess whose circumferential direction is a circle, for example. An insertion hole 128 is formed at the center of the bush 122, and the drive shaft 62 is inserted into the insertion hole 128 so as to expand the insertion hole 128. The bush 122 far from the vibration member 60 and the drive shaft 62 are bonded and fixed, but the closer bush 122 and the drive shaft 62 are not bonded.

筐体１２の第一の側面２２（底面）の内側には、第一の支持用突部１３０がブッシュ１２２の噛み合わせ部１２６に対向して形成されている。また、筐体１２の第三の側面２４（上面）の内側には、第二の支持用突部１３２がブッシュ１２２の噛み合わせ部１２６に対向して形成されている。第一の支持用突部１３０には、下方に凹む半円形の第一の噛み合わせ溝１３４が形成され、一方、第二の支持用突部１３２には、上方に凹む半円形の第二の噛み合わせ溝１３６が形成されている。そして、第一の支持用突部１３０と第二の支持用突部１３２の先端同士が当接すると共に、ブッシュ１２２の円形の噛み合わせ部１２６が半円形の第一の噛み合わせ溝１３４と第二の挟込部１３６とに挟み込まれて、駆動軸６２が筐体１２に振動自在（特に駆動軸６２の軸方向に対して）に支持されている。 On the inner side of the first side surface 22 (bottom surface) of the housing 12, a first support protrusion 130 is formed to face the meshing portion 126 of the bush 122. Further, a second support protrusion 132 is formed on the inner side of the third side surface 24 (upper surface) of the housing 12 so as to face the meshing portion 126 of the bush 122. The first support protrusion 130 is formed with a semicircular first engagement groove 134 that is recessed downward, while the second support protrusion 132 is formed with a semicircular second recess that is recessed upward. A meshing groove 136 is formed. And the front-end | tips of the 1st support protrusion 130 and the 2nd support protrusion 132 contact | abut, and the circular meshing part 126 of the bush 122 is a semicircular 1st meshing groove 134 and 2nd. The drive shaft 62 is supported by the housing 12 so as to be able to vibrate (particularly with respect to the axial direction of the drive shaft 62).

また、筐体１２内には、ズームレンズ位置検出器１３８とフォーカスレンズ位置検出器１４０とが設けられている。それぞれの位置検出器１３８，１４０は、同じ構造であり、カメラ装置１０の長手方向に沿って異なる磁極（Ｓ極とＮ極）を交互に配置した磁極部材１４２，１４４と、磁界強度を検知するＭＲセンサ１４６，１４８（図６にＭＲセンサ１４８のみを示す）とから構成されている。ＭＲセンサ１４６，１４８は、それぞれズームレンズ支持体５２及びフォーカスレンズ支持体５４の支持部９８の下方でズームレンズ支持体５２又はフォーカスレンズ支持体５４と一体で第四の側面２８側に突出したＭＲセンサ保持部１５０に固定されている。磁極部材１４２，１４４は、ＭＲセンサ１４６，１４８に対向して、筐体１２の第一の側面２２（底面）に固定されている。各レンズ支持体５２，５４が移動すると、ＭＲセンサ１４６，１４８により各レンズ支持体５２，５４の移動量及び移動方向が磁界強度の変化として検出され、検出された磁界強度の変化を示す信号がＭＲセンサ１４６，１４８から出力される。 In addition, a zoom lens position detector 138 and a focus lens position detector 140 are provided in the housing 12. The position detectors 138 and 140 have the same structure, and magnetic pole members 142 and 144 in which different magnetic poles (S poles and N poles) are alternately arranged along the longitudinal direction of the camera device 10 and the magnetic field strength are detected. MR sensors 146 and 148 (only MR sensor 148 is shown in FIG. 6). The MR sensors 146 and 148 are integrated with the zoom lens support body 52 or the focus lens support body 54 below the support portion 98 of the zoom lens support body 52 and the focus lens support body 54, respectively, and project to the fourth side face 28 side. It is fixed to the sensor holding part 150. The magnetic pole members 142 and 144 are fixed to the first side surface 22 (bottom surface) of the housing 12 so as to face the MR sensors 146 and 148. When the lens supports 52 and 54 move, the movement amounts and directions of the lens supports 52 and 54 are detected as changes in the magnetic field strength by the MR sensors 146 and 148, and a signal indicating the detected change in the magnetic field strength is generated. Output from the MR sensors 146 and 148.

一方のＭＲセンサ１４６は、第一のＭＲセンサ用フレキシブル配線基板（以下、第一のＭＲ用ＦＰＣという。）１５２に接続されている。第一のＭＲ用ＦＰＣ１５２は、ＭＲセンサ１４６に接続された第一の接続部１５４から折り曲げられてズームレンズ側上方に延び、第一の側面２２が切り欠かれて筐体１２の長手方向略中央に形成された空間部１５６を通って下方に延び、さらに第一の側面２２の下方から第五の側面３０側へ引き出されている。また、他方のＭＲセンサ１４８は、第二のＭＲセンサ用フレキシブル配線基板（以下、第二のＭＲ用ＦＰＣという。）１５８に接続されている。第二のＭＲ用ＦＰＣ１５８は、ＭＲセンサ１４８に接続された第二の接続部１６０から折り曲げられてフォーカスレンズ側上方に延び、前述した空間部１５６で第一のＭＲ用ＦＰＣ１５２と一体となって第五の側面３０側へ引き出されている。 One MR sensor 146 is connected to a first MR sensor flexible wiring board (hereinafter referred to as a first MR FPC) 152. The first MR FPC 152 is bent from the first connection portion 154 connected to the MR sensor 146 and extends upward on the zoom lens side, and the first side surface 22 is cut away so as to be approximately at the center in the longitudinal direction of the housing 12. It extends downward through the space portion 156 formed in the first side 22 and is further drawn from the lower side of the first side surface 22 to the fifth side surface 30 side. The other MR sensor 148 is connected to a second flexible wiring board for MR sensor (hereinafter referred to as second MR FPC) 158. The second MR FPC 158 is bent from the second connection portion 160 connected to the MR sensor 148 and extends upward on the focus lens side, and is integrated with the first MR FPC 152 in the space portion 156 described above. It is pulled out to the fifth side 30 side.

前述したアクチュエータ５８，５８の振動部材６０，６０も同様にフレキシブル配線基板が接続されている。即ち、図８に示すように、それぞれの振動部材６０，６０は、前述した空間部１５６に露出し、一方の振動部材６０に接続された第一の振動部材用フレキシブル配線基板（以下、第一の振動部材用ＦＰＣという。）１６２は、一方の振動部材６０から下方に延び、第一の側面２２の下方から第五の側面３０側へ引き出される。また、他方の振動部材６０に接続された第二の振動部材用フレキシブル配線基板（以下、第二の振動部材用ＦＰＣという。）１６４は、他方の振動部材６０から下方に延び、第一の振動部材用ＦＰＣ１６２と一体となって第一の側面２２の下方から第五の側面３０側へ引き出される。それぞれの振動部材用ＦＰＣ１６２，１６４は３つに分かれ、振動部材６０の駆動軸側の電極層７０には第一の端子部１６６により、裏面側の電極層７２には第二の端子部１６８により、電極板６８の通電用接続部７６には第三の端子部１７０によりそれぞれ半田等を用いて接続されている。第一の端子部１６６は、駆動軸６２を固定する接着剤７４に触れないように、駆動軸６２から離れた振動部材６０の角部近傍で三日月状に形成され、その円弧の中心が角部となるように配置されている。第二の端子部１６８は、振動部材６０の中心部分で円環形状に形成されている。第三の端子部１７０は、通電用接続部７６に対応して振動部材６０から突出し、通電用接続部７６を取り囲むように四角環形状に形成されている。 Similarly, the vibration members 60 and 60 of the actuators 58 and 58 are connected to a flexible wiring board. That is, as shown in FIG. 8, the respective vibration members 60, 60 are exposed to the space portion 156 described above, and are connected to one vibration member 60. ) 162 extends downward from one vibration member 60 and is drawn from below the first side surface 22 to the fifth side surface 30 side. Also, a second vibration member flexible wiring board (hereinafter referred to as second vibration member FPC) 164 connected to the other vibration member 60 extends downward from the other vibration member 60 to provide the first vibration. It is integrated with the member FPC 162 and is drawn from below the first side surface 22 to the fifth side surface 30 side. Each of the vibration member FPCs 162 and 164 is divided into three parts. The electrode layer 70 on the drive shaft side of the vibration member 60 is provided with the first terminal portion 166 and the electrode layer 72 on the back surface side is provided with the second terminal portion 168. The current-carrying connection portion 76 of the electrode plate 68 is connected to the third terminal portion 170 by using solder or the like. The first terminal portion 166 is formed in a crescent shape in the vicinity of the corner of the vibration member 60 away from the drive shaft 62 so as not to touch the adhesive 74 that fixes the drive shaft 62, and the center of the arc is a corner portion. It is arranged to become. The second terminal portion 168 is formed in an annular shape at the center portion of the vibration member 60. The third terminal portion 170 protrudes from the vibration member 60 corresponding to the energizing connection portion 76 and is formed in a square ring shape so as to surround the energizing connection portion 76.

次にアクチュエータ５８によりフォーカスレンズ支持体５４を移動させる場合について説明する。前述したように、アクチュエータ５８にパルス電圧を繰り返し印加すると、振動部材６０が一方向に向けてお椀状に変形するのと急速に元の平板状に戻ろうとするのを繰り返す。それに伴い駆動軸６２も軸方向に微小な往復移動を繰り返す。一方側に向けてお椀状に変形したときは、フォーカスレンズ支持体５４は支持機構８０を介してアクチュエータ５８の駆動軸６２と摩擦接触するように支持されているので、フォーカスレンズ支持体５４は、駆動軸６２と共に移動する。一方、振動部材６０が急速に元の平板状に戻ろうとするときは、駆動軸６２も逆方向に高速に移動し、フォーカスレンズ支持体５４は高速ゆえに駆動軸６２の動きに追随できず、元の位置には戻らずその位置に留まる。したがって、フォーカスレンズ支持体５４は、１つの動作で振動部材６０の変形の振幅の大きさ程度移動する。パルス電圧を繰り返し印加することによりこのような移動を繰り返して行い、フォーカスレンズ支持体５４を所望位置まで移動させることができる。 Next, the case where the focus lens support 54 is moved by the actuator 58 will be described. As described above, when a pulse voltage is repeatedly applied to the actuator 58, the vibrating member 60 is repeatedly deformed into a bowl shape in one direction and rapidly returns to the original flat plate shape. Along with this, the drive shaft 62 repeats minute reciprocation in the axial direction. When deformed in a bowl shape toward one side, the focus lens support 54 is supported so as to be in frictional contact with the drive shaft 62 of the actuator 58 via the support mechanism 80. It moves together with the drive shaft 62. On the other hand, when the vibrating member 60 tries to return to the original flat plate shape rapidly, the drive shaft 62 also moves at high speed in the opposite direction, and the focus lens support 54 cannot follow the movement of the drive shaft 62 because of the high speed. It does not return to the position of but remains in that position. Therefore, the focus lens support 54 moves about the magnitude of the deformation amplitude of the vibration member 60 in one operation. By repeatedly applying the pulse voltage, such movement is repeatedly performed, and the focus lens support 54 can be moved to a desired position.

この場合、フォーカスレンズ支持体５４は、一方側の上下方向略中央に設けられた駆動軸６２と、反対側の上下に設けられた筐体１２の案内部８２，８４により支持されつつ、カメラ装置１０の長手方向に案内されるので、フォーカスレンズ支持体５４を安定して移動させることができる。
なお、ズームレンズ支持体５２の動作もフォーカスレンズ支持体５４と同様である。 In this case, the focus lens support 54 is supported by the drive shaft 62 provided at approximately the center in the vertical direction on one side and the guide portions 82 and 84 of the casing 12 provided on the upper and lower sides on the opposite side. Therefore, the focus lens support 54 can be stably moved.
The operation of the zoom lens support 52 is the same as that of the focus lens support 54.

なお、突起９４、９６は半球状としたが、サイコロ状等の他の形状にしても構わない。また、突起９４、９６は二箇所に設けたが、一箇所でも三箇所以上でも構わない。また、突起９４、９６は金属等の別部材で形成してレンズ支持体５２、５４に固着しても良い。また、突起９４、９６または案内部８２、８４の少なくとも一方に潤滑手段を用いても良い。
また、案内部８２、８４は、それぞれ角部から突出する形状に形成されているが、突出させずに例えば第一の側面２２及び第三の側面２６そのものを案内部８２、８４として被案内部８６、８８を直接当接させるものであっても良い。 The protrusions 94 and 96 are hemispherical, but may have other shapes such as a dice shape. Further, although the protrusions 94 and 96 are provided at two places, they may be provided at one place or three or more places. In addition, the protrusions 94 and 96 may be formed of separate members such as metal and fixed to the lens supports 52 and 54. Further, a lubricating means may be used for at least one of the protrusions 94 and 96 or the guide portions 82 and 84.
In addition, the guide portions 82 and 84 are each formed in a shape protruding from the corner portion, but without being protruded, for example, the first side surface 22 and the third side surface 26 themselves are used as the guide portions 82 and 84 to be guided portions. 86 and 88 may be directly brought into contact with each other.

また、アクチュエータ５８，５８は、駆動軸６２，６２が長手方向で互いに向きが異なるように配置したが、同じ向きになるように配置しても良い。
また、筐体１２は、第１の部材２０から第５の部材３６までの５分割にしたが、他の分割区分でも構わない。 The actuators 58 and 58 are arranged so that the drive shafts 62 and 62 are different from each other in the longitudinal direction, but may be arranged so as to be in the same direction.
Moreover, although the housing | casing 12 was divided into 5 from the 1st member 20 to the 5th member 36, another division | segmentation division may be sufficient.

１０カメラ装置
１２筐体
１４ズームレンズ
１６フォーカスレンズ
２２第一の側面
２４第二の側面
２６第三の側面
２８第四の側面
３０第五の側面
５２ズームレンズ支持体
５４フォーカスレンズ支持体
５８アクチュエータ
６０振動部材
６２駆動軸
８０支持機構
８２，８４案内部
８６，８８被案内部
９４，９６突起
１０６挟持部材
１１２押圧部材
１２０付勢部
１２２ブッシュ（弾性部材）
１３０第一の支持用突部
１３２第二の支持用突部
１３８ズームレンズ位置検出器
１４０フォーカスレンズ位置検出器 DESCRIPTION OF SYMBOLS 10 Camera apparatus 12 Case 14 Zoom lens 16 Focus lens 22 1st side surface 24 2nd side surface 26 3rd side surface 28 4th side surface 30 5th side surface 52 Zoom lens support body 54 Focus lens support body 58 Actuator 60 Vibration member 62 Drive shaft 80 Support mechanism 82, 84 Guide portion 86, 88 Guided portion 94, 96 Protrusion 106 Nipping member 112 Press member 120 Biasing portion 122 Bush (elastic member)
130 First support protrusion 132 Second support protrusion 138 Zoom lens position detector 140 Focus lens position detector

Claims

A lens support for supporting the lens;
A drive shaft coupled to the lens support to drive the lens support;
A housing for housing the lens support and the drive shaft,
The housing has a first side surface, a second angle following the first side surface at right angles to the first side surface when viewed from the direction of the optical axis of the lens supported by the lens support . And a third side surface that follows the second side surface so as to be perpendicular to the second side surface and face the first side surface when viewed from the direction of the optical axis ,
The drive shaft is disposed on the opposite side of the second side surface with the lens support in between when viewed from the direction of the optical axis ,
The casing is formed with a guide portion at a corner portion constituted by the first side surface and the second side surface, and a corner portion constituted by the second side surface and the third side surface, and the lens support. A lens driving device in which guided portions respectively formed on the body corresponding to the guide portions are in contact with the guide portions, and the lens support is sandwiched between the guide portions.

A lens support for supporting the lens;
A drive shaft coupled to the lens support to drive the lens support;
A housing for housing the lens support and the drive shaft,
The housing has a first side surface, a second angle following the first side surface at right angles to the first side surface when viewed from the direction of the optical axis of the lens supported by the lens support . And a third side surface that follows the second side surface so as to be perpendicular to the second side surface and face the first side surface when viewed from the direction of the optical axis ,
The drive shaft is disposed on the opposite side of the second side surface with the lens support in between when viewed from the direction of the optical axis ,
The housing includes guide portions opposed to each other on the first side surface and the third side surface, and guided portions respectively formed on the lens support body corresponding to the guide portions. The guide part and the guided part are arranged on the side of the second side opposite to the drive shaft so that a line connecting between the contact points does not cross a lens supported by the lens support. And a lens driving device in which the lens support is guided between the guide portions.

The lens driving device according to claim 1, wherein a projection protruding to the other is formed on at least one of the guide portion and the guided portion.

The lens driving device according to claim 1, wherein the drive shaft is fixed to a vibration member, and a piezoelectric actuator is configured by the drive shaft and the vibration member.

The lens support is supported by the drive shaft via a support mechanism;
The support mechanism includes a pressing member fixed to the lens support and a clamping member that clamps the drive shaft so as to be in frictional contact with the drive shaft, and an urging portion provided on the pressing member The lens driving device according to claim 4, wherein the pinching member biases the clamping member toward the driving shaft.

The first side surface and the third side surface of the casing are integrally formed with support protrusions protruding toward the inside, and the drive shaft is sandwiched between the support protrusions via an elastic member. 6. The lens driving device according to claim 4, wherein the lens driving device is supported so as to freely vibrate.

A lens,
A lens support for supporting the lens;
A drive shaft coupled to the lens support to drive the lens support;
A housing for housing the lens support and the drive shaft;
An image sensor provided on the optical axis of the lens,
The housing has a first side surface, a second angle following the first side surface at right angles to the first side surface when viewed from the direction of the optical axis of the lens supported by the lens support . And a third side surface that follows the second side surface so as to be perpendicular to the second side surface and face the first side surface when viewed from the direction of the optical axis ,
The drive shaft is disposed on the opposite side of the second side surface with the lens support in between when viewed from the optical axis ,
The casing is formed with a guide portion at a corner portion constituted by the first side surface and the second side surface, and a corner portion constituted by the second side surface and the third side surface, and the lens support. A camera device in which guided portions respectively formed on the body corresponding to the guide portions are in contact with the guide portions, and the lens support is sandwiched between the guide portions to guide the camera device.

A lens,
A lens support for supporting the lens;
A drive shaft coupled to the lens support to drive the lens support;
A housing for housing the lens support and the drive shaft;
An image sensor provided on the optical axis of the lens,
The housing has a first side, a second side following the first side, and a third side following the second side;
The housing includes guide portions opposed to each other on the first side surface and the third side surface, and guided portions respectively formed on the lens support body corresponding to the guide portions. The guide part and the guided part are arranged on the side of the second side opposite to the drive shaft so that a line connecting between the contact points does not cross a lens supported by the lens support. And a camera device configured to guide the lens support member between the guide portions.

An electronic apparatus comprising the camera device according to claim 7.