JP5530201B2 - Lens drive device - Google Patents
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- JP5530201B2 JP5530201B2 JP2010014666A JP2010014666A JP5530201B2 JP 5530201 B2 JP5530201 B2 JP 5530201B2 JP 2010014666 A JP2010014666 A JP 2010014666A JP 2010014666 A JP2010014666 A JP 2010014666A JP 5530201 B2 JP5530201 B2 JP 5530201B2
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- 238000005452 bending Methods 0.000 claims description 2
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- 229910000679 solder Inorganic materials 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 1
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- Lens Barrels (AREA)
Description
本発明は、レンズを備えた移動体を光軸方向に駆動するレンズ駆動装置に関するものである。 The present invention relates to a lens driving device that drives a moving body including a lens in an optical axis direction.
カメラ付き携帯電話機やデジタルカメラ等に搭載されるレンズ駆動装置は、レンズを備えた移動体と、この移動体の外側に配置された支持体と、移動体をレンズ光軸方向に磁気駆動するコイルおよびマグネットを備えた磁気駆動機構とを有している。ここで、支持体は、移動体に対して光軸方向後側で撮像素子を保持するベースと、ベースに対して光軸方向前側で被さって移動体を覆うヨークとを備えている。 A lens driving device mounted on a mobile phone with a camera, a digital camera, or the like includes a moving body provided with a lens, a support disposed outside the moving body, and a coil that magnetically drives the moving body in the lens optical axis direction. And a magnetic drive mechanism including a magnet. Here, the support body includes a base that holds the image sensor on the rear side in the optical axis direction with respect to the moving body, and a yoke that covers the base body on the front side in the optical axis direction and covers the moving body.
かかるレンズ駆動装置は、コイルに給電するための給電端子を有しており、給電端子は、ヨークの内側に配置された内部端子部と、内部端子からヨークの外側まで延在する端子延在部とを備えている。かかる給電端子をヨークの外側まで延在させる際、ベースに被さるヨークと給電端子との短絡を回避する必要がある。 Such a lens driving device has a power supply terminal for supplying power to the coil, and the power supply terminal includes an internal terminal portion arranged inside the yoke and a terminal extending portion extending from the internal terminal to the outside of the yoke. And. When extending the power supply terminal to the outside of the yoke, it is necessary to avoid a short circuit between the yoke covering the base and the power supply terminal.
そこで、光軸方向に貫通するスリットをベースに設けておき、かかるスリット内に端子延在部を通して端子延在部をヨークの外側まで延在させた構造が提案されている（特許文献１参照）。 Therefore, a structure has been proposed in which a slit penetrating in the optical axis direction is provided in the base, and the terminal extension is extended to the outside of the yoke through the terminal extension in the slit (see Patent Document 1). .
しかしながら、ベースに設けたスリット内に給電端子を通した構成の場合には、レンズ駆動装置を組み立てる際に給電端子をスリット内に通す必要があるため、組立に多大な手間がかかるという問題点がある。また、ベースに設けたスリット内に給電端子を通した構成の場合には、給電端子をスリットに圧入する際にスリット内壁が擦れて粉が発生し、かかる粉が異物としてレンズや撮像素子に付着してしまうという問題点もある。さらに、スリットについてはベースの外側面から所定の寸法分だけ離間した位置に設ける必要があるため、ベースの外側面からみてかなり奥まった箇所に端子延在部が引き出されることになり、端子延在部ヘのハンダ付けに多大な手間がかかるという問題点もある。 However, in the case where the power supply terminal is passed through the slit provided in the base, it is necessary to pass the power supply terminal through the slit when assembling the lens driving device. is there. In addition, when the power supply terminal is passed through the slit provided in the base, when the power supply terminal is press-fitted into the slit, the inner wall of the slit is rubbed to generate powder, and the powder adheres to the lens or image sensor as foreign matter. There is also the problem of end up. Furthermore, since it is necessary to provide the slit at a position separated by a predetermined dimension from the outer side surface of the base, the terminal extension portion is drawn out at a location that is considerably deeper as viewed from the outer side surface of the base. There is also a problem that it takes a lot of time to solder the part.
以上の問題点に鑑みて、本発明の課題は、ベースにスリットを設けずに給電端子をヨークの内側から外側まで引き出すことにより、組立工程や給電端子へのハンダ付け工程の効率化を図ることができるとともに、ヨークの内側への異物の侵入を防止することのできるレンズ駆動装置を提供することにある。 In view of the above problems, the object of the present invention is to improve the efficiency of the assembly process and the soldering process to the power supply terminal by drawing the power supply terminal from the inside to the outside of the yoke without providing a slit in the base. An object of the present invention is to provide a lens driving device that can prevent foreign matter from entering the inside of a yoke.
上記課題を解決するために、本発明は、レンズを備えた移動体と、該移動体の外側に配置された支持体と、前記移動体をレンズ光軸方向に磁気駆動するコイルおよびマグネットを備えた磁気駆動機構と、前記移動体と前記支持体とを接続するバネ部材と、該バネ部材とは別体からなり、当該バネ部材を介して前記コイルに電気的に接続された給電端子と、を有するレンズ駆動装置において、前記支持体は、前記移動体に対して光軸方向後側に設けられたベースと、該ベースの光軸方向前側および当該ベースの径方向外側に被さって前記移動体を覆うヨークと、を有し、前記給電端子は、前記ヨークの内側で前記ベースの光
軸方向前側に配置された内部端子部と、該内部端子部から光軸方向後側に向かって折れ曲がって前記ベースの外側面に沿って延在して前記ヨークの後側端縁から外側に引き出された端子延在部と、を備え、前記内部端子部は、前記バネ部材が電気的に接続された接続部分と、前記ベースの光軸方向前側に固定された固定部分と、を備え、前記ベースの光軸方向前側には突起が形成され、前記固定部分には、前記突起が嵌る穴が形成されており、前記固定部分は、前記突起が前記穴に嵌った状態で前記ベースの光軸方向前側に固定され、前記端子延在部は、前記ベースの前記外側面に当接して径方向で位置決めされていることを特徴とする。
In order to solve the above-described problems, the present invention includes a moving body including a lens, a support disposed outside the moving body, and a coil and a magnet that magnetically drives the moving body in the lens optical axis direction. A magnetic drive mechanism, a spring member that connects the movable body and the support, and a spring member that is separate from the spring member and is electrically connected to the coil via the spring member; In the lens driving device, the support includes a base provided on the rear side in the optical axis direction with respect to the moving body, and covers the front side of the base in the optical axis direction and the radially outer side of the base. And the power supply terminal is bent toward the rear side in the optical axis direction from the inner terminal portion disposed inside the yoke on the front side in the optical axis direction of the base. Along the outer surface of the base A terminal extension portion extending outwardly from the rear end edge of the yoke, and the internal terminal portion includes a connection portion to which the spring member is electrically connected, and the base A fixed portion fixed to the front side in the optical axis direction, a protrusion is formed on the front side in the optical axis direction of the base, and a hole for fitting the protrusion is formed in the fixed portion. , the projection is fixed in the optical axis direction front side of the base in a state of fitted into the hole, the terminal extending part, and characterized in that it is positioned in contact with radially outer surfaces of said base To do.
本発明において、給電端子は、ベースの外側面に沿って延在してヨークの後側端縁から外側に引き出された端子延在部を備え、かかる端子延在部は、ベースの外側面に当接して径方向で位置決めされている。かかる構成によれば、給電端子をベースのスリット内に通す構成と違って、レンズ駆動装置の組立時に多大な手間を必要としないので、レンズ駆動装置の組立工程を効率よく行なうことができる。また、給電端子をスリット内に圧入する構成と違って、バリの削り屑等の異物が発生しないので、異物がレンズ等に付着する等の不具合の発生を防止することができる。また、給電端子をベースのスリット内に通す構成と違って、ベースの外側面に近い位置に端子延在部が位置するため、端子延在部と配線部材とのハンダ付けを効率よく行なうことができる。さらに、端子延在部は、ベースの外側面に当接して径方向で位置決めされているため、端子延在部の近傍にヨークが位置する場合でも、端子延在部とヨークとの間に隙間を確実に確保でき、端子延在部とヨークとが短絡することがない。 In the present invention, the power supply terminal includes a terminal extension portion that extends along the outer side surface of the base and is drawn out from the rear end edge of the yoke, and the terminal extension portion is provided on the outer side surface of the base. Abutted and positioned in the radial direction. According to such a configuration, unlike the configuration in which the power supply terminal is passed through the slit of the base, no great effort is required at the time of assembling the lens driving device, so that the assembly process of the lens driving device can be performed efficiently. Further, unlike the configuration in which the power supply terminal is press-fitted into the slit, no foreign matter such as burr shavings or the like is generated, so that it is possible to prevent the occurrence of problems such as foreign matter adhering to the lens or the like. Also, unlike the configuration in which the power supply terminal is passed through the slit in the base, the terminal extension is located near the outer surface of the base, so that the terminal extension and the wiring member can be efficiently soldered. it can. Further, since the terminal extension portion is positioned in the radial direction in contact with the outer surface of the base, even when the yoke is positioned in the vicinity of the terminal extension portion, there is a gap between the terminal extension portion and the yoke. Can be reliably ensured, and the terminal extension portion and the yoke will not be short-circuited.
本発明において、前記ベースの外側面には、径方向内側に凹んだ溝状凹部が形成されており、前記端子延在部は、前記溝状凹部内で延在しているとともに、当該溝状凹部において径方向内側に位置する底部に当接して径方向で位置決めされていることが好ましい。かかる構成によれば、ヨークを大型化しなくても、給電端子をヨークと短絡させることなく外部まで延在させることができる。また、端子延在部が溝状凹部内で延在しているため、レンズ駆動装置の小型化を図ることができる。 In the present invention, the outer surface of the base is formed with a groove-like recess recessed radially inward, and the terminal extension extends within the groove-like recess, and the groove-like It is preferable that the concave portion is positioned in the radial direction in contact with the bottom portion located radially inward. According to such a configuration, the power supply terminal can be extended to the outside without being short-circuited with the yoke without increasing the size of the yoke. In addition, since the terminal extension portion extends in the groove-like recess, the lens driving device can be reduced in size.
本発明において、前記端子延在部に対して径方向外側には、当該端子延在部との間に隙間を介して前記ヨークの後側端縁が対向し、前記隙間は、接着剤により封止されていることが好ましい。かかる構成によれば、給電端子とヨークとの短絡を阻止するための隙間を介してヨークの内部に異物が侵入することを接着剤によって防止することができる。また、給電端子とヨークとの短絡を接着剤によって阻止することもできる。 In the present invention, the rear edge of the yoke is opposed to the terminal extension part radially outside the terminal extension part with a gap between the terminal extension part, and the gap is sealed with an adhesive. It is preferably stopped. According to such a configuration, it is possible to prevent the foreign matter from entering the inside of the yoke through the gap for preventing a short circuit between the power supply terminal and the yoke. In addition, a short circuit between the power supply terminal and the yoke can be prevented by an adhesive.
本発明において、前記ベースの外側面には、前記隙間に対して前記ヨークの後側端縁が延在する方向で隣り合う位置で当該ヨークの後側端縁に沿って延在する接着剤充填溝を構成する段部が形成されており、前記接着剤は、前記隙間を封止する部分と繋がるように前記接着剤充填溝に充填されていることが好ましい。かかる構成によれば、隙間内と接着剤充填溝内とで繋がるように接着剤を充填するため、隙間の端部等といった接着剤で封止しにくい個所であっても接着剤によって確実に封止することができる。従って、給電端子とヨークの後側端縁との隙間からヨークの内部に異物が侵入することを確実に防止することができる。 In the present invention, the outer surface of the base is filled with an adhesive extending along the rear edge of the yoke at a position adjacent to the gap in a direction in which the rear edge of the yoke extends. It is preferable that a step portion constituting a groove is formed, and the adhesive is filled in the adhesive filling groove so as to be connected to a portion sealing the gap. According to such a configuration, the adhesive is filled so as to be connected between the gap and the adhesive filling groove, so that even an area that is difficult to seal with an adhesive such as an end of the gap is reliably sealed with the adhesive. Can be stopped. Therefore, it is possible to reliably prevent foreign matter from entering the inside of the yoke through the gap between the power supply terminal and the rear edge of the yoke.
本発明において、前記端子延在部は、前記ヨークの後側端縁に沿う方向に延在する第１延在部と、該第１延在部の先端部から光軸方向後側に向けて屈曲して延在する第２延在部と、を備え、前記接着剤充填溝は、前記第１延在部と前記第２延在部との屈曲部分の内側まで延在していることが好ましい。かかる構成によれば、屈曲部分の内側等といった接着剤を充填しにくい個所であっても接着剤を充填することができる。従って、給電端子とヨークの後側端縁との隙間からヨークの内部に異物が侵入することを確実に防止することができる。 In the present invention, the terminal extending portion includes a first extending portion extending in a direction along the rear end edge of the yoke, and a rear end in the optical axis direction from a tip portion of the first extending portion. A second extending portion that extends by bending, and the adhesive filling groove extends to the inside of the bent portion of the first extending portion and the second extending portion. preferable. According to such a configuration, it is possible to fill the adhesive even at places where it is difficult to fill the adhesive, such as inside the bent portion. Therefore, it is possible to reliably prevent foreign matter from entering the inside of the yoke through the gap between the power supply terminal and the rear edge of the yoke.
本発明において、給電端子は、ベースの外側面に沿って延在してヨークの後側端縁から外側に引き出された端子延在部を備え、かかる端子延在部は、ベースの外側面に当接して径方向で位置決めされている。このため、給電端子をベースのスリット内に通す構成と違って、レンズ駆動装置の組立時に多大な手間を必要としないので、レンズ駆動装置の組立工程を効率よく行なうことができる。また、給電端子をスリット内に圧入する構成と違って、バリの削り屑等の異物が発生しないので、異物がレンズ等に付着する等の不具合の発生を防止することができる。また、給電端子をベースのスリット内に通す構成と違って、ベースの外側面に近い位置に端子延在部が位置するため、端子延在部ヘのハンダ付けを効率よく行なうことができる。それ故、給電端子へのハンダ付け工程を効率よく行なうことができる。さらに、端子延在部は、ベースの外側面に当接して径方向で位置決めされているため、端子延在部の近傍にヨークが位置する場合でも、端子延在部とヨークとの間に隙間を確実に確保でき、端子延在部とヨークとが短絡することがない。 In the present invention, the power supply terminal includes a terminal extension portion that extends along the outer side surface of the base and is drawn out from the rear end edge of the yoke, and the terminal extension portion is provided on the outer side surface of the base. Abutted and positioned in the radial direction. For this reason, unlike the configuration in which the power supply terminal is passed through the slit of the base, no great effort is required at the time of assembling the lens driving device, so that the assembling process of the lens driving device can be performed efficiently. Further, unlike the configuration in which the power supply terminal is press-fitted into the slit, no foreign matter such as burr shavings or the like is generated, so that it is possible to prevent the occurrence of problems such as foreign matter adhering to the lens or the like. In addition, unlike the configuration in which the power supply terminal is passed through the slit of the base, the terminal extension portion is located at a position close to the outer surface of the base, so that the terminal extension portion can be soldered efficiently. Therefore, the soldering process to the power supply terminal can be performed efficiently. Further, since the terminal extension portion is positioned in the radial direction in contact with the outer surface of the base, even when the yoke is positioned in the vicinity of the terminal extension portion, there is a gap between the terminal extension portion and the yoke. Can be reliably ensured, and the terminal extension portion and the yoke will not be short-circuited.
本発明において、端子延在部と、端子延在部に対して径方向外側に位置するヨークの後側端縁との間の隙間が接着剤により封止されている場合、かかる隙間を介してヨークの内部に異物が侵入することを接着剤によって防止することができる。また、給電端子とヨークとの短絡を接着剤によって阻止することもできる。 In the present invention, when a gap between the terminal extension portion and the rear end edge of the yoke located radially outside the terminal extension portion is sealed with an adhesive, The adhesive can prevent foreign matter from entering the yoke. In addition, a short circuit between the power supply terminal and the yoke can be prevented by an adhesive.
以下、本発明を実施するための形態について、図面を参照しながら説明する。なお、以下に説明するレンズ駆動装置は、カメラ付き携帯電話機の他にも、様々な電子機器に取り付けることが可能である。例えば、薄型のデジタルカメラ、ＰＨＳ、ＰＤＡ、バーコードリーダ、監視カメラ、車の背後確認用カメラ、光学的認証機能を有するドア等に用いることができる。また、以下に参照する図面において、互いに直交する３方向をＸ方向、Ｙ方向およびＺ方向とし、Ｚ方向を光軸に沿う方向として説明する。また、以下に参照する図面において、Ｘ方向、Ｙ方向およびＺ方向の一方側を＋Ｘ、＋Ｙ、＋Ｚとし、他方側を−Ｘ、−Ｙ、−Ｚとする。さらに、光軸方向において、物体が位置する側を光軸方向前側とし、像が形成される側を光軸方向後側として説明する。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The lens driving device described below can be attached to various electronic devices in addition to the camera-equipped mobile phone. For example, it can be used for a thin digital camera, PHS, PDA, bar code reader, surveillance camera, camera for checking the back of a car, a door having an optical authentication function, and the like. In the drawings referred to below, three directions orthogonal to each other will be described as an X direction, a Y direction, and a Z direction, and the Z direction will be described as a direction along the optical axis. In the drawings referred to below, one side of the X direction, the Y direction, and the Z direction is + X, + Y, + Z, and the other side is -X, -Y, -Z. Further, in the optical axis direction, the side on which the object is located is referred to as the front side in the optical axis direction, and the side on which the image is formed is described as the rear side in the optical axis direction.
（全体構成）
図１は、本発明を適用したレンズ駆動装置の外観を示す説明図であり、図１（ａ）、（ｂ）は各々、レンズ駆動装置を前側の斜め上方からみた斜視図、および後側の斜め下方からみた斜視図である。図２は、本発明を適用したレンズ駆動装置の分解斜視図であり、図３は、本発明を適用したレンズ駆動装置に用いた各部材の説明図であり、図３（ａ）、（ｂ）は、レンズ駆動装置をさらに細かく分解した様子を示す分解斜視図、およびベースに第１バネ部材と給電端子とを搭載した様子を示す斜視図である。図４は、本発明を適用したレンズ駆動装置の縦断面図である。なお、図２〜図４では、レンズやレンズホルダ等の図示を省略してある。
(overall structure)
FIG. 1 is an explanatory view showing the appearance of a lens driving device to which the present invention is applied. FIGS. 1 (a) and 1 (b) are a perspective view of the lens driving device as viewed obliquely from the front side, and a rear side, respectively. It is the perspective view seen from diagonally downward. FIG. 2 is an exploded perspective view of a lens driving device to which the present invention is applied, and FIG. 3 is an explanatory view of each member used in the lens driving device to which the present invention is applied. FIG. 4B is an exploded perspective view showing a state in which the lens driving device is further disassembled in detail, and a perspective view showing a state in which the first spring member and the power supply terminal are mounted on the base. FIG. 4 is a longitudinal sectional view of a lens driving device to which the present invention is applied. In FIGS. 2 to 4, illustration of a lens, a lens holder, and the like is omitted.
図１において、本形態のレンズ駆動装置１０は、カメラ付き携帯電話機等に用いられる薄型カメラにおいてレンズ１２１を光軸方向Ｌに沿って被写体（物体側）に近づくＡ方向（上方／前側）、および被写体とは反対側（後側／撮像素子６０が配置されている側）に近づくＢ方向（下方／後側）の双方向に移動させるためのものであり、略直方体形状を有している。 In FIG. 1, the lens driving device 10 according to the present embodiment includes a lens 121 in a thin camera used for a camera-equipped mobile phone or the like along the optical axis direction L in the A direction (upper / front side) approaching the subject (object side); It is for moving in both directions in the B direction (downward / rear side) approaching the side opposite to the subject (rear side / side where the image sensor 60 is disposed), and has a substantially rectangular parallelepiped shape.
図２〜図４に示すように、レンズ駆動装置１０は、概ね、図１（ａ）に示すレンズ１２１および固定絞り（図示せず）を直接、あるいは円筒状のレンズホルダ１２０を介して一体に保持した略円筒状のスリーブ１５を備えた移動体３と、この移動体３を光軸方向Ｌに沿って磁気駆動する磁気駆動機構５と、磁気駆動機構５および移動体３が搭載された支持体２とを有している。 As shown in FIGS. 2 to 4, the lens driving device 10 generally includes the lens 121 and the fixed diaphragm (not shown) shown in FIG. 1A directly or integrally with a cylindrical lens holder 120. The movable body 3 having the held substantially cylindrical sleeve 15, the magnetic drive mechanism 5 that magnetically drives the movable body 3 along the optical axis direction L, and the support on which the magnetic drive mechanism 5 and the movable body 3 are mounted. Body 2.
本形態において、支持体２は、光軸方向Ｌ後側で撮像素子６０やＩＲフィルタを保持するためのベース１９と、ベース１９に対して光軸方向Ｌ前側に配置されたヨーク１１と、ヨーク１１の前板部１１１の下面に固着された矩形枠状のバネホルダ１８とを備えている。 In this embodiment, the support 2 includes a base 19 for holding the image sensor 60 and the IR filter on the rear side in the optical axis direction L, a yoke 11 disposed on the front side in the optical axis direction L with respect to the base 19, and a yoke And a rectangular frame-shaped spring holder 18 fixed to the lower surface of the 11 front plate portions 111.
ベース１９の中央には、撮像素子６０に対する光路を確保する矩形の開口部１９０が形成されており、かかる開口部１９０は、ベース１９を光軸方向Ｌで貫通している。また、バネホルダ１８にも開口部１８０が形成されている。従って、撮像素子６０は、レンズ１２１を介して入射した光を受光することができる。ここで、撮像素子６０は、ベース１９よりもさらに後側で開口部１９０から外れた位置に配置される場合がある他、開口部１９０の内側に配置されることもある。 In the center of the base 19, a rectangular opening 190 that secures an optical path to the image sensor 60 is formed. The opening 190 penetrates the base 19 in the optical axis direction L. An opening 180 is also formed in the spring holder 18. Accordingly, the image sensor 60 can receive light incident through the lens 121. Here, the image sensor 60 may be disposed at a position further rearward than the base 19 and away from the opening 190, or may be disposed inside the opening 190.
ヨーク１１は、矩形の前板部１１１と、側板部１１２、１１３、１１４、１１５からなる角筒状胴部１１７を備えており、前板部１１１の中央には、被写体からの反射光をレンズ１２１に取り込むための円形の入射窓１１０が形成されている。また、前板部１１１では、その対角線上に、入射窓１１０から半径方向外側に向けて切り欠き１１１ａ、１１１ｂ、１１１ｃ、１１１ｄが形成されており、その結果、前板部１１１の辺部に相当する部分は、半径方向内側に突出した張り出し部１１１ｇ、１１１ｈ、１１１ｉ、１１１ｊになっている。ヨーク１１の角筒状胴部１１７には、レンズ駆動装置１０を機器本体に搭載する際にフックが係合する切り欠き１１７ａが形成されている。 The yoke 11 includes a rectangular front plate portion 111 and a rectangular tube-shaped body portion 117 including side plate portions 112, 113, 114, and 115. In the center of the front plate portion 111, reflected light from a subject is a lens. A circular incident window 110 for taking in the image 121 is formed. Further, in the front plate portion 111, notches 111a, 111b, 111c, and 111d are formed radially outward from the incident window 110 on the diagonal line. As a result, the front plate portion 111 corresponds to the side portion of the front plate portion 111. The portions to be formed are overhanging portions 111g, 111h, 111i, and 111j protruding inward in the radial direction. A cutout 117a is formed in the rectangular tubular body 117 of the yoke 11 to engage with a hook when the lens driving device 10 is mounted on the apparatus main body.
ヨーク１１は、角筒状胴部１１７が移動体３の周りを囲んだ状態に配置されており、角筒状胴部１１７の４つの角部分の内側には、三角柱状のマグネット１７が各々固着されている。ヨーク１１は、鋼板等の強磁性板からなり、マグネット１７に対するバックヨークとして機能する。 The yoke 11 is disposed in a state in which the rectangular tube-shaped body portion 117 surrounds the moving body 3, and triangular prism-shaped magnets 17 are fixed to the inside of the four corner portions of the rectangular tube-shaped body portion 117. Has been. The yoke 11 is made of a ferromagnetic plate such as a steel plate and functions as a back yoke for the magnet 17.
マグネット１７は、スリーブ１５の外周面に巻回された円筒状のコイル１４１、１４２に対して外周側で対向し、磁気駆動機構５を構成している。４つのマグネット１７はいずれも、内面と外面が異なる極に着磁されている。本形態では、４つのマグネット１７は各々、２つのマグネット片を光軸方向Ｌに重ねて配置した構成を備えている。 The magnet 17 is opposed to the cylindrical coils 141 and 142 wound around the outer peripheral surface of the sleeve 15 on the outer peripheral side, and constitutes the magnetic drive mechanism 5. All four magnets 17 are magnetized to poles having different inner and outer surfaces. In the present embodiment, each of the four magnets 17 has a configuration in which two magnet pieces are arranged so as to overlap in the optical axis direction L.
支持体２と移動体３とは、第１バネ部材３１および第２バネ部材３２からなる２枚のバネ部材によって接続されている。第１バネ部材３１および第２バネ部材３２は双方とも、ベリリウム銅等からなる金属製の薄板から形成された板バネ状のジンバルバネである。 The support body 2 and the moving body 3 are connected by two spring members including a first spring member 31 and a second spring member 32. Both the first spring member 31 and the second spring member 32 are plate spring-like gimbal springs formed from a thin metal plate made of beryllium copper or the like.
第１バネ部材３１は、ベース１９の４つの角部分に連結される４つの固定側連結部３１１と、スリーブ１５の後側端縁に連結される円環状の可動側連結部３１２と、固定側連結部３１１と可動側連結部３１２とを接続する４本のアーム部３１３とを備えている。第２バネ部材３２も、第１バネ部材３１と同様な形状を有しており、バネホルダ１８の４つの角部分に連結される４つの固定側連結部３２１と、スリーブ１５の前側端部に連結される円環状の可動側連結部３２２と、固定側連結部３２１と可動側連結部３２２とを接続する４本のアーム部３２３とを備えている。かかる第１バネ部材３１および第２バネ部材３２は、移動体３を光軸方向Ｌに変位可能に支持するとともに、移動体３の光軸周りの回転を阻止する機能を担っている。 The first spring member 31 includes four fixed side connecting portions 311 connected to the four corner portions of the base 19, an annular movable side connecting portion 312 connected to the rear end edge of the sleeve 15, and a fixed side Four arm portions 313 that connect the connecting portion 311 and the movable side connecting portion 312 are provided. The second spring member 32 has the same shape as the first spring member 31, and is connected to the four fixed side connection portions 321 connected to the four corner portions of the spring holder 18 and the front end portion of the sleeve 15. And an annular movable side coupling portion 322, and four arm portions 323 that connect the fixed side coupling portion 321 and the movable side coupling portion 322. The first spring member 31 and the second spring member 32 support the movable body 3 so as to be displaceable in the optical axis direction L, and have a function of preventing the rotation of the movable body 3 around the optical axis.
本形態において、第２バネ部材３２は、全体が一体として形成されている。これに対して、第１バネ部材３１は、電気的に分離された２枚のバネ片３１ａ、３１ｂからなり、バネ片３１ａ、３１ｂの各々には、バネ片３１ａ、３１ｂとは別体の金属部品からなる給電端子１６が接続されている。従って、バネ片３１ａ、３１ｂにコイル１４１、１４２のコイル端末を電気的に接続すれば、給電端子１６を介してコイル１４１、１４２に給電することができる。 In this embodiment, the second spring member 32 is formed integrally as a whole. On the other hand, the first spring member 31 includes two spring pieces 31a and 31b that are electrically separated, and each of the spring pieces 31a and 31b has a metal separate from the spring pieces 31a and 31b. A power feeding terminal 16 made of a component is connected. Therefore, if the coil terminals of the coils 141 and 142 are electrically connected to the spring pieces 31 a and 31 b, power can be supplied to the coils 141 and 142 via the power supply terminal 16.
レンズ駆動装置１０は、さらに、スリーブ１５の上端に保持されたリング状の磁性片１５０を備えており、このような磁性片１５０は、マグネット１７との間に作用する吸引力により移動体３に対して光軸方向Ｌの付勢力を印加する磁気バネを構成する。このため、移動体３が無通電時に自重で変位することを防止することができるため、移動体３に所望の姿勢を維持させ、さらに耐衝撃性を向上させることが可能である。また、磁性片１５０は、一種のバックヨークとして作用し、マグネット１７とコイル１４１、１４２との間に構成される磁路からの漏れ磁束を少なくすることができる。なお、磁性片としては、棒状の磁性体が用いられることもある。 The lens driving device 10 further includes a ring-shaped magnetic piece 150 held at the upper end of the sleeve 15, and the magnetic piece 150 is applied to the moving body 3 by an attractive force acting between the magnet 17. A magnetic spring that applies an urging force in the optical axis direction L is configured. For this reason, since it is possible to prevent the mobile body 3 from being displaced by its own weight when no current is applied, it is possible to maintain the mobile body 3 in a desired posture and to further improve the impact resistance. Further, the magnetic piece 150 acts as a kind of back yoke, and can reduce the leakage magnetic flux from the magnetic path formed between the magnet 17 and the coils 141 and 142. In addition, as a magnetic piece, a rod-shaped magnetic body may be used.
（スリーブ１５の構成）
スリーブ１５は略円筒状の樹脂成形品である。スリーブ１５の外周面においては、前側端部には、周方向に連続した円環状突起１５８が形成されており、円環状突起１５８の前端面に第２バネ部材３２の円環状の可動側連結部３２２が連結される。また、円環状突起１５８の前端面およびスリーブ１５の外周面に跨るように、４つの突起１５３が周方向で略等角度間隔に形成されている。
(Configuration of sleeve 15)
The sleeve 15 is a substantially cylindrical resin molded product. On the outer peripheral surface of the sleeve 15, an annular protrusion 158 that is continuous in the circumferential direction is formed at the front end, and the annular movable side coupling part of the second spring member 32 is formed on the front end surface of the annular protrusion 158. 322 are linked. Further, four protrusions 153 are formed at substantially equal angular intervals in the circumferential direction so as to straddle the front end surface of the annular protrusion 158 and the outer peripheral surface of the sleeve 15.
スリーブ１５の外周面において、光軸方向Ｌにおける略中央付近にも、周方向に連続した円環状突起１５７が形成されており、かかる円環状突起１５７から外周側に向けては、４つの突起１５２が周方向で略等角度間隔に形成されている。 On the outer peripheral surface of the sleeve 15, an annular protrusion 157 that is continuous in the circumferential direction is also formed near the approximate center in the optical axis direction L, and four protrusions 152 extend from the annular protrusion 157 toward the outer peripheral side. Are formed at substantially equal angular intervals in the circumferential direction.
スリーブ１５の外周面において、後側端部にも、周方向に連続した円環状突起１５６が形成されており、かかる円環状突起１５６から外周側に向けては、４つの突起１５１が周方向で略等角度間隔に形成されている。かかる円環状突起１５６の下端面に第１バネ部材３１の円環状の可動側連結部３１２が連結される。 On the outer peripheral surface of the sleeve 15, an annular protrusion 156 that is continuous in the circumferential direction is also formed at the rear end, and four protrusions 151 are formed in the circumferential direction from the annular protrusion 156 toward the outer peripheral side. It is formed at substantially equal angular intervals. The annular movable side coupling portion 312 of the first spring member 31 is coupled to the lower end surface of the annular projection 156.
このようにしてスリーブ１５の外周面には、円環状突起１５６と円環状突起１５７とによって挟まれた領域にコイル１４１の巻回領域が構成され、円環状突起１５７と円環状突起１５８とによって挟まれた領域にコイル１４２の巻回領域が構成されている。 In this way, the winding region of the coil 141 is formed on the outer peripheral surface of the sleeve 15 in the region sandwiched between the annular projection 156 and the annular projection 157, and is sandwiched between the annular projection 157 and the annular projection 158. A winding region of the coil 142 is configured in the region.
また、スリーブ１５の外周面で突出した突起１５２によってスリーブ１５（移動体３）の周方向の回転許容範囲を規定するストッパが形成されている。すなわち、移動体３の周りにマグネット１７を配置すると、周方向で隣接するマグネット１７の間に突起１５２が位置するため、スリーブ１５（移動体３）が光軸周りに回転したときには、突起１５２とマグネット１７とが干渉する。 Further, a stopper for defining a circumferential allowable rotation range of the sleeve 15 (moving body 3) is formed by the protrusion 152 protruding from the outer peripheral surface of the sleeve 15. That is, when the magnet 17 is disposed around the moving body 3, the protrusion 152 is positioned between the adjacent magnets 17 in the circumferential direction. Therefore, when the sleeve 15 (the moving body 3) rotates around the optical axis, Magnet 17 interferes.
また、スリーブ１５の外周面で突出した突起１５１、１５２によってスリーブ１５（移動体３）の光軸に交差する方向の変位や傾きを規制するストッパが形成されている。すなわち、移動体３をヨーク１１の内側に配置すると、スリーブ１５の突起１５１、１５２と、ヨーク１１の側板部１１２、１１３、１１４、１１５が対向するので、スリーブ１５（移動体３）が光軸に交差する方向に変位したときや傾いたときには、スリーブ１５の突起１５１、１５２とヨーク１１の側板部１１２、１１３、１１４、１１５とが干渉する。 Further, a stopper for restricting displacement or inclination in a direction intersecting the optical axis of the sleeve 15 (moving body 3) is formed by the protrusions 151 and 152 protruding from the outer peripheral surface of the sleeve 15. That is, when the movable body 3 is arranged inside the yoke 11, the protrusions 151 and 152 of the sleeve 15 and the side plate portions 112, 113, 114, and 115 of the yoke 11 face each other, so that the sleeve 15 (the movable body 3) is placed on the optical axis. When displaced in a direction intersecting or tilted, the protrusions 151 and 152 of the sleeve 15 interfere with the side plate portions 112, 113, 114 and 115 of the yoke 11.
また、スリーブ１５の外周面で突出した突起１５３によってスリーブ１５（移動体３）の前側への可動範囲や傾きを規定するストッパが形成されている。すなわち、移動体３をヨーク１１の内側に配置すると、スリーブ１５の突起１５３と、ヨーク１１の張り出し部１１１ｇ、１１１ｈ、１１１ｉ、１１１ｊとが光軸方向Ｌで重なるため、スリーブ１５（移動体３）が光軸に沿って前側に移動したときや傾いたときには、突起１５３と張り出し部１１１ｇ、１１１ｈ、１１１ｉ、１１１ｊとが干渉する。 In addition, a stopper that defines a movable range and an inclination of the sleeve 15 (moving body 3) to the front side is formed by a protrusion 153 protruding from the outer peripheral surface of the sleeve 15. That is, when the movable body 3 is arranged inside the yoke 11, the protrusion 153 of the sleeve 15 and the projecting portions 111g, 111h, 111i, 111j of the yoke 11 overlap in the optical axis direction L, so the sleeve 15 (the movable body 3). When the lens moves forward or tilts along the optical axis, the protrusion 153 interferes with the overhanging portions 111g, 111h, 111i, and 111j.
（ベース１９の基本的な構成）
図１〜図４に示すように、ベース１９は、略矩形の平板部１９１と、平板部１９１の外周縁から光軸方向Ｌ後側に突出した矩形枠状の側板部１９２と、平板部１９１の外周縁から光軸方向Ｌ前側に突出したリブ状突起１９３とを備えており、リブ状突起１９３には平板部１９１の辺部に相当する位置に切り欠き１９３ａが形成されている。かかるリブ状突起１９３は、ヨーク１１の内周面に当接して、ヨーク１１の位置決めを行なっている。
(Basic configuration of base 19)
As shown in FIGS. 1 to 4, the base 19 includes a substantially rectangular flat plate portion 191, a rectangular frame-shaped side plate portion 192 protruding from the outer peripheral edge of the flat plate portion 191 to the rear side in the optical axis direction L, and a flat plate portion 191. And a rib-like projection 193 projecting forward in the optical axis direction L from the outer peripheral edge, and the rib-like projection 193 is formed with a notch 193a at a position corresponding to the side portion of the flat plate portion 191. The rib-like protrusions 193 are in contact with the inner peripheral surface of the yoke 11 to position the yoke 11.
平板部１９１の中央には、貫通穴からなる矩形の開口部１９０が形成されている。ベース１９の下方側には、開口部１９０に対して光軸方向Ｌに重なる位置に撮像素子６０やフィルター（図示せず）等が配置される。 A rectangular opening 190 made of a through hole is formed in the center of the flat plate portion 191. On the lower side of the base 19, an image sensor 60, a filter (not shown) and the like are disposed at a position overlapping the opening 190 in the optical axis direction L.
平板部１９１の光軸方向Ｌ前側の面には、開口部１９０が形成されている略円形の内周側領域１９１ａと、この内周側領域１９１ａの外周縁に段部を介して連接して内周側領域１９１ａよりも光軸方向Ｌ前側に向けて一段高くなった環状領域１９１ｂと、平板部１９１の角部分で環状領域１９１ｂの外周縁に段部を介して連接して環状領域１９１ｂよりも光軸方向Ｌ前側に向けて一段高くなった三角領域１９１ｃとを備えている。 The surface on the front side in the optical axis direction L of the flat plate portion 191 is connected to a substantially circular inner peripheral side region 191a in which an opening 190 is formed, and an outer peripheral edge of the inner peripheral side region 191a via a stepped portion. An annular region 191b that is one step higher toward the front side in the optical axis direction L than the inner peripheral side region 191a, and a corner portion of the flat plate portion 191 that is connected to the outer peripheral edge of the annular region 191b via a step portion, from the annular region 191b. Is also provided with a triangular region 191c that is one step higher toward the front side in the optical axis direction L.
４つの三角領域１９１ｃはいずれも、第１バネ部材３１の固定側連結部３１１が連結される領域である。４つの三角領域１９１ｃの各々には小突起１９１ｅが形成されており、小突起１９１ｅは、第１バネ部材３１の固定側連結部３１１を連結するのに利用される。例えば、第１バネ部材３１の固定側連結部３１１には、小突起１９１ｅが嵌る穴が形成されているので、かかる穴に小突起１９１ｅを嵌めた後、小突起１９１ｅを溶融させれば、第１バネ部材３１の固定側連結部３１１をベース１９に熱溶着することができる。 All of the four triangular regions 191c are regions to which the fixed side connecting portion 311 of the first spring member 31 is connected. A small protrusion 191e is formed in each of the four triangular regions 191c, and the small protrusion 191e is used to connect the fixed side connecting portion 311 of the first spring member 31. For example, the fixed-side connecting portion 311 of the first spring member 31 has a hole into which the small protrusion 191e is fitted. Therefore, if the small protrusion 191e is melted after fitting the small protrusion 191e in the hole, The fixed side connecting portion 311 of the one spring member 31 can be thermally welded to the base 19.
平板部１９１の光軸方向Ｌ前側の面には、内周側領域１９１ａと環状領域１９１ｂとに跨るように円形の凹部１９１ｆが複数、形成されており、かかる凹部１９１ｆは、スリーブ１５において第１バネ部材３１の可動側連結部３１２を連結するのに用いた小突起（図示せず）と光軸方向Ｌで重なる位置に形成されている。このため、凹部１９１ｆは、スリーブ１５の小突起を受け入れることにより、ベース１９とスリーブ１５とが小突起によって干渉することを阻止する機能を担っている。なお、環状領域１９１ｂには複数の浅い円形の凹部１９１ｇが形成されており、かかる凹部１９１ｇベース１９を樹脂成形する際にイジェクトピンが当接した箇所である。 A plurality of circular recesses 191f are formed on the surface of the flat plate portion 191 on the front side in the optical axis direction L so as to straddle the inner peripheral region 191a and the annular region 191b. It is formed at a position where it overlaps in the optical axis direction L with a small protrusion (not shown) used to connect the movable side connecting portion 312 of the spring member 31. For this reason, the concave portion 191f has a function of preventing the base 19 and the sleeve 15 from interfering with each other by receiving the small protrusions of the sleeve 15. A plurality of shallow circular recesses 191g are formed in the annular region 191b, and the eject pins are in contact with each other when the recess 191g base 19 is resin-molded.
平板部１９１の光軸方向Ｌ前側の面において、環状領域１９１ｂには、その内周縁に沿うように形成された突部によって計４つのストッパ部１９１ｈが略等角度間隔に形成されており、かかるストッパ部１９１ｈは、周方向に所定寸法、延在した円弧形状を備えている。ここで、ストッパ部１９１ｈは、スリーブ１５の後側端面に形成された突起（図示せず）と光軸方向Ｌで重なる位置に形成されており、スリーブ１５（移動体３）の後側への可動範囲を規定するストッパとして機能する。すなわち、スリーブ１５（移動体３）が光軸に沿って後側に移動したときには、スリーブ１５の突起とストッパ部１９１ｈとが当接し、干渉する。また、ベース１９では、ストッパ部１９１ｈに対して内周側で隣接する位置には、内周側領域１９１ａの外周縁に沿うように塵埃貯留用凹部１９１ｉが形成されている。かかる塵埃貯留用凹部１９１ｉは、光軸方向Ｌ後側に向けて凹んでおり、スリーブ１５の突起とストッパ部１９１ｈとが当接した際に発生する塵埃を捕捉して保持する。ここで、塵埃貯留用凹部１９１ｉも、周方向に所定寸法延在した円弧形状を備えている。 On the front surface in the optical axis direction L of the flat plate portion 191, a total of four stopper portions 191h are formed at substantially equal angular intervals in the annular region 191b by protrusions formed along the inner peripheral edge thereof. The stopper portion 191h has an arc shape extending a predetermined dimension in the circumferential direction. Here, the stopper portion 191h is formed at a position overlapping with a protrusion (not shown) formed on the rear end surface of the sleeve 15 in the optical axis direction L, and the sleeve 15 (moving body 3) is moved to the rear side. It functions as a stopper that defines the movable range. That is, when the sleeve 15 (the moving body 3) moves rearward along the optical axis, the protrusion of the sleeve 15 and the stopper portion 191h come into contact with each other and interfere with each other. In the base 19, a dust storage recess 191i is formed at a position adjacent to the stopper portion 191h on the inner peripheral side so as to follow the outer peripheral edge of the inner peripheral region 191a. The dust storage recess 191i is recessed toward the rear side in the optical axis direction L, and captures and holds dust generated when the projection of the sleeve 15 and the stopper 191h come into contact with each other. Here, the dust storage recess 191i also has an arc shape extending in the circumferential direction by a predetermined dimension.
ベース１９の光軸方向Ｌ前側の面において、４つの三角領域１９１ｃのうち、Ｘ方向の一方側（＋Ｘ側）に位置する２つの三角領域１９１ｃにＹ方向で隣接する領域１９１ｓは、三角領域１９１ｃより一段低く、かかる領域１９１ｓには、給電端子１６を保持する小突起１９１ｊが形成されている。すなわち、給電端子１６には小突起１９１ｊが嵌る穴１６２ａが形成されており、穴１６２ａに小突起１９１ｊを嵌めた後、小突起１９１ｊを溶融させれば、２つの給電端子１６を各々ベース１９に熱溶着することができる。また、２つの給電端子１６は各々、第１バネ部材３１を構成するバネ片３１ａ、３１ｂにハンダ等で電気的に接続されており、２つの給電端子１６は各々、バネ片３１ａ、３１ｂを介してコイル１４１、１４２に電気的に接続されている。 Of the four triangular regions 191c on the surface on the front side in the optical axis direction L of the base 19, a region 191s adjacent in the Y direction to two triangular regions 191c located on one side in the X direction (+ X side) is a triangular region 191c. A small protrusion 191j that holds the power supply terminal 16 is formed in the region 191s that is one step lower. That is, the power supply terminal 16 is formed with a hole 162a into which the small protrusion 191j is fitted. After the small protrusion 191j is melted after fitting the small protrusion 191j into the hole 162a, the two power supply terminals 16 are respectively connected to the base 19. Can be heat-welded. The two power supply terminals 16 are electrically connected to the spring pieces 31a and 31b constituting the first spring member 31 by solder or the like, and the two power supply terminals 16 are respectively connected via the spring pieces 31a and 31b. The coils 141 and 142 are electrically connected.
（動作）
本形態のレンズ駆動装置１０において、まず、磁気駆動機構５が停止している待機期間中、第１バネ部材３１および第２バネ部材３２の付勢力によって、移動体３は、光軸方向Ｌ後側に位置し、スリーブ１５がベース１９に弾性をもって当接している状態にある。
(Operation)
In the lens driving device 10 of the present embodiment, first, during the standby period in which the magnetic driving mechanism 5 is stopped, the moving body 3 is moved in the optical axis direction L by the urging force of the first spring member 31 and the second spring member 32. The sleeve 15 is in contact with the base 19 with elasticity.
このような状態において、磁気駆動機構５のコイル１４１、１４２に所定方向の電流を流すと、コイル１４１、１４２は各々、光軸方向Ｌ前側の電磁力を受けることになる。これにより、コイル１４１、１４２が固着されたスリーブ１５は、光軸方向Ｌ前側に移動し始めることになる。このとき、第１バネ部材３１とスリーブ１５の前側端部との間、および第２バネ部材３２とスリーブ１５の後側端部との間には、それぞれスリーブ１５の移動を規制する弾性力が発生する。このため、スリーブ１５を光軸方向Ｌ前側に移動させようとする電磁力と、スリーブ１５の移動を規制する弾性力とが釣り合ったとき、スリーブ１５は停止する。その際、コイル１４１、１４２に流す電流量と、第１バネ部材３１および第２バネ部材３２によってスリーブ１５に働く弾性力とを調整することで、スリーブ１５（移動体３）を所望の位置に停止させることができる。 In such a state, when a current in a predetermined direction is passed through the coils 141 and 142 of the magnetic drive mechanism 5, each of the coils 141 and 142 receives an electromagnetic force on the front side in the optical axis direction L. Thereby, the sleeve 15 to which the coils 141 and 142 are fixed starts to move forward in the optical axis direction L. At this time, an elastic force that restricts the movement of the sleeve 15 is provided between the first spring member 31 and the front end of the sleeve 15 and between the second spring member 32 and the rear end of the sleeve 15. Occur. For this reason, when the electromagnetic force that attempts to move the sleeve 15 forward in the optical axis direction L and the elastic force that restricts the movement of the sleeve 15 are balanced, the sleeve 15 stops. At this time, the sleeve 15 (moving body 3) is brought to a desired position by adjusting the amount of current flowing through the coils 141 and 142 and the elastic force acting on the sleeve 15 by the first spring member 31 and the second spring member 32. Can be stopped.
また、本形態では、弾性力（応力）と変位量（歪み量）との間に線形関係が成立する第１バネ部材３１および第２バネ部材３２を用いていることから、スリーブ１５の移動量とコイル１４１、１４２に流す電流との間のリニアリティを向上させることができる。また、第１バネ部材３１および第２バネ部材３２という２個の弾性部材を用いていることから、スリーブ１５が停止したときに光軸方向Ｌに大きな釣り合いの力が加わることになり、光軸方向Ｌに遠心力や衝撃力等の他の力が働いたとしても、より安定にスリーブ１５を停止させることができる。さらに、レンズ駆動装置１０では、スリーブ１５を停止させるのに、衝突材（緩衝材）等に衝突させて停止させるのではなく、電磁力と弾性力との釣り合いを利用して停止させることとしているので、衝突音の発生を防ぐことも可能である。 In this embodiment, since the first spring member 31 and the second spring member 32 in which a linear relationship is established between the elastic force (stress) and the displacement amount (strain amount) are used, the movement amount of the sleeve 15 is used. And the current flowing through the coils 141 and 142 can be improved. In addition, since two elastic members, the first spring member 31 and the second spring member 32, are used, a large balance force is applied in the optical axis direction L when the sleeve 15 is stopped. Even if other forces such as centrifugal force and impact force are applied in the direction L, the sleeve 15 can be stopped more stably. Further, in the lens driving device 10, the sleeve 15 is not stopped by colliding with a collision material (buffer material) or the like, but is stopped using a balance between electromagnetic force and elastic force. Therefore, it is possible to prevent the occurrence of a collision sound.
（ベース１９への給電端子１６の搭載構造）
図５は、本発明を適用したレンズ駆動装置におけるベース１９への給電端子１６の搭載構造を示す説明図であり、図５（ａ）、（ｂ）、（ｃ）、（ｄ）、（ｅ）は、ベース１９に給電端子１６を搭載した様子を示す平面図、ベース１９に給電端子１６とヨーク１１とを搭載した様子を示す側面図、ベース１９に給電端子１６を搭載した様子をヨーク１１を省略して示す側面図、ベース１９と給電端子１６とを分解して示す側面図、およびベース１９に給電端子１６を搭載した様子を示す底面図である。なお、図５では、給電端子１６についてはグレー領域として示してある。
(Mounting structure of the power supply terminal 16 to the base 19)
FIG. 5 is an explanatory view showing a mounting structure of the power supply terminal 16 to the base 19 in the lens driving device to which the present invention is applied. FIGS. 5 (a), 5 (b), 5 (c), (d), (e) ) Is a plan view showing a state in which the power supply terminal 16 is mounted on the base 19, a side view showing a state in which the power supply terminal 16 and the yoke 11 are mounted on the base 19, and a state in which the power supply terminal 16 is mounted on the base 19. 4 is a side view showing the base 19 and the power supply terminal 16 in an exploded manner, and a bottom view showing a state in which the power supply terminal 16 is mounted on the base 19. In FIG. 5, the power supply terminal 16 is shown as a gray region.
図６は、本発明を適用したレンズ駆動装置におけるベース１９への給電端子１６の搭載部分を斜め前方からみた様子を示す斜視図であり、図６（ａ）、（ｂ）、（ｃ）は、ベース１９に給電端子１６とヨークとを搭載した様子を示す斜視図、ベース１９に給電端子１６を搭載した様子をヨーク１１を省略して示す斜視図、およびベース１９と給電端子１６とを分解して示す斜視図である。 FIG. 6 is a perspective view showing a state in which a portion where the power supply terminal 16 is mounted on the base 19 in the lens driving device to which the present invention is applied is viewed obliquely from front, and FIGS. 6 (a), 6 (b), and 6 (c) are views. The perspective view showing a state where the power supply terminal 16 and the yoke are mounted on the base 19, the perspective view showing the state where the power supply terminal 16 is mounted on the base 19 with the yoke 11 omitted, and the base 19 and the power supply terminal 16 being disassembled. It is a perspective view shown.
図７は、本発明を適用したレンズ駆動装置におけるベース１９への給電端子１６の搭載部分を斜め後方からみた様子を示す斜視図であり、図７（ａ）、（ｂ）、（ｃ）は、ベース１９に給電端子１６とヨークとを搭載した様子を示す斜視図、ベース１９に給電端子１６を搭載した様子をヨーク１１を省略して示す斜視図、およびベース１９と給電端子１６とを分解して示す斜視図である。 FIG. 7 is a perspective view showing a state in which a portion where the power supply terminal 16 is mounted on the base 19 in the lens driving device to which the present invention is applied is viewed obliquely from the rear, and FIGS. 7 (a), 7 (b) and 7 (c) are views. The perspective view showing a state where the power supply terminal 16 and the yoke are mounted on the base 19, the perspective view showing the state where the power supply terminal 16 is mounted on the base 19 with the yoke 11 omitted, and the base 19 and the power supply terminal 16 being disassembled. It is a perspective view shown.
図５（ｄ）、図６（ｃ）および図７（ｃ）に示すように、２つの給電端子１６はいずれも、同一形状の金属部品から構成されており、ヨーク１１の内側でベース１９の光軸方向Ｌ前側の面上に配置される内部端子部１６０と、内部端子部１６０から延在する端子延在部１６９とを備えている。 As shown in FIG. 5D, FIG. 6C, and FIG. 7C, each of the two power supply terminals 16 is composed of a metal part having the same shape. An internal terminal portion 160 disposed on the front surface in the optical axis direction L and a terminal extending portion 169 extending from the internal terminal portion 160 are provided.
内部端子部１６０は、Ｘ方向に延在する細幅の接続部分１６１と、接続部分１６１に連接する略三角形の固定部分１６２とを備えており、２つの給電端子１６は各々、接続部分１６１がバネ片３１ａ、３１ｂにハンダ（図示せず）等で電気的に接続されている（図３（ｂ）参照）。また、固定部分１６２には、ベース１９の小突起１９１ｊが嵌る穴１６２ａが形成されており、２つの給電端子１６は各々、固定部分１６２によってベース１９に固定されている。 The internal terminal portion 160 includes a narrow connection portion 161 extending in the X direction and a substantially triangular fixed portion 162 connected to the connection portion 161, and each of the two power supply terminals 16 includes a connection portion 161. The spring pieces 31a and 31b are electrically connected by solder (not shown) or the like (see FIG. 3B). The fixing portion 162 is formed with a hole 162a into which the small protrusion 191j of the base 19 is fitted. The two power supply terminals 16 are fixed to the base 19 by the fixing portion 162, respectively.
端子延在部１６９は、固定部分１６２から光軸方向Ｌ後側に向けて直角に折れ曲がってＹ方向に延在する第１延在部１６３と、第１延在部１６３の端部からさらに光軸方向Ｌ後側に直角に屈曲した第２延在部１６４と、第２延在部１６４の後側端縁からＹ方向に延在する第３延在部１６５と、第３延在部１６５の端部からさらに光軸方向Ｌ後側に直角に屈曲した第４延在部１６６とを備えている。なお、接続部分１６１において、端子延在部１６９の付け根部分には半円形状の切り欠き１６１ａが形成されている。 The terminal extending portion 169 is bent at a right angle from the fixed portion 162 toward the rear side in the optical axis direction L and extends in the Y direction, and further light is transmitted from the end of the first extending portion 163. A second extending portion 164 bent perpendicularly to the rear side in the axial direction L, a third extending portion 165 extending in the Y direction from the rear edge of the second extending portion 164, and a third extending portion 165 And a fourth extending portion 166 bent at a right angle to the rear side in the optical axis direction L. In the connection portion 161, a semicircular cutout 161 a is formed at the base portion of the terminal extension portion 169.
かかる構成の給電端子１６を搭載するために、ベース１９の外側面１９４において、端子延在部１６９が位置する部分は、径方向内側に凹む溝状凹部１９５になっている。ベース１９において溝状凹部１９５の両側は、溝状凹部１９５において径方向内側に位置する底部１９５ａよりも径方向外側に突出する突部１９８、１９９になっており、突部１９９に対して光軸方向Ｌ後側に隣接する領域は、溝状凹部１９５の底部１９５ａによりもさらに径方向内側に凹んだ凹部１９４ｅになっている。 In order to mount the power supply terminal 16 having such a configuration, a portion where the terminal extending portion 169 is located on the outer side surface 194 of the base 19 is a groove-like recess 195 that is recessed radially inward. In the base 19, both sides of the groove-shaped recess 195 are protrusions 198, 199 that protrude radially outward from the bottom 195 a positioned radially inward in the groove-shaped recess 195. A region adjacent to the rear side in the direction L is a recessed portion 194e that is recessed further inward in the radial direction than the bottom portion 195a of the groove-shaped recessed portion 195.
ベース１９において突部１９８には、溝状凹部１９５においてＸ方向に延在する内側壁１９８ａと、内側壁１９８ａに対して光軸方向Ｌ後側で連接して径方向外側に向く壁面１９８ｂと、壁面１９８ｂの後側端縁で径方向外側に向けて突出して光軸方向Ｌ前側に向く段部１９８ｃとが形成されている。 In the base 19, the protrusion 198 includes an inner wall 198a extending in the X direction in the groove-shaped recess 195, a wall 198b connected to the inner wall 198a on the rear side in the optical axis direction L and directed radially outward, A stepped portion 198c that protrudes radially outward at the rear edge of the wall surface 198b and faces the front side in the optical axis direction L is formed.
このように構成したベース１９に対して給電端子１６を搭載するには、図５（ａ）、（ｃ）、図６（ｂ）、および図７（ｂ）に示すように、ベース１９の領域１９１ｓに内部端子部１６０を重ね、固定部分１６２の穴１６２ａにベース１９の小突起１９１ｊを嵌める。その際、端子延在部１６９を溝状凹部１９５に嵌める。その結果、端子延在部１６９は、ベース１９の外側面１９４のうち、溝状凹部１９５の底部１９５ａに当接し、給電端子１６は径方向で位置決めされる。この状態で、給電端子１６の第４延在部１６６は、ベース１９の凹部１９４ｅよりわずかに径方向外側に浮いた状態となる。このようにして、ベース１９に対して給電端子１６を搭載した後、小突起１９１ｊを溶融させて、２つの給電端子１６を各々ベース１９に熱溶着する。次に、２つの給電端子１６と、第１バネ部材３１のバネ片３１ａ、３１ｂとをハンダ等で電気的に接続する。その結果、２つの給電端子１６は各々、バネ片３１ａ、３１ｂを介してコイル１４１、１４２に電気的に接続される。 In order to mount the power supply terminal 16 on the base 19 configured as described above, as shown in FIGS. 5A, 5C, 6B, and 7B, an area of the base 19 is provided. The internal terminal portion 160 is overlaid on 191s, and the small protrusion 191j of the base 19 is fitted into the hole 162a of the fixed portion 162. At that time, the terminal extension 169 is fitted into the groove-shaped recess 195. As a result, the terminal extending portion 169 contacts the bottom portion 195a of the groove-shaped recess 195 in the outer surface 194 of the base 19, and the power supply terminal 16 is positioned in the radial direction. In this state, the fourth extending portion 166 of the power supply terminal 16 floats slightly outward in the radial direction from the concave portion 194 e of the base 19. In this way, after the power supply terminal 16 is mounted on the base 19, the small protrusion 191 j is melted and the two power supply terminals 16 are thermally welded to the base 19, respectively. Next, the two power supply terminals 16 and the spring pieces 31a and 31b of the first spring member 31 are electrically connected with solder or the like. As a result, the two power supply terminals 16 are electrically connected to the coils 141 and 142 via the spring pieces 31a and 31b, respectively.
次に、図５（ｂ）、図６（ａ）および図７（ａ）に示すように、ベース１９に対して光軸方向Ｌ前側にヨーク１１を被せる。その結果、ヨーク１１は、ベース１９のリブ状突起１９３に規定された位置に配置され、ベース１９の光軸方向Ｌ前側および径方向外側に被さって移動体３等を覆った状態となる。また、ヨーク１１の側板部１１２は、給電端子１６の端子延在部１６９の一部を径方向外側で覆った状態となる。但し、給電端子１６の第２延在部１６４の一部、第３延在部１６５、および第４延在部１６６は、ヨーク１１の後側端縁１１９から露出した状態にある。 Next, as shown in FIG. 5B, FIG. 6A, and FIG. 7A, the yoke 11 is put on the base 19 in the optical axis direction L front side. As a result, the yoke 11 is disposed at a position defined by the rib-like protrusion 193 of the base 19 and covers the movable body 3 and the like by covering the front side of the base 19 in the optical axis direction L and the outside in the radial direction. Further, the side plate portion 112 of the yoke 11 is in a state in which a part of the terminal extending portion 169 of the power supply terminal 16 is covered with the outside in the radial direction. However, a part of the second extending portion 164, the third extending portion 165, and the fourth extending portion 166 of the power supply terminal 16 are exposed from the rear end edge 119 of the yoke 11.
この状態で、図５（ａ）、（ｅ）に示すように、端子延在部１６９に対して径方向外側には、ヨーク１１の側板部１１２が対向した状態となる。ここで、ヨーク１１の側板部１１２の径方向内側の面は、ベース１９の突部１９９に当接する一方、給電端子１６の端子延在部１６９は、溝状凹部１９５の底部１９５ａに当接し、径方向で位置決めされている。このため、端子延在部１６９の径方向外側の面と、ヨーク１１の側板部１１２の径方向内側の面との間には隙間Ｇが介在し、給電端子１６とヨーク１１との短絡が防止される。但し、ヨーク１１と給電端子１６との間に隙間Ｇが存在していると、異物がヨーク１１の内部に侵入するおそれがある。そこで、本形態では、図５（ｂ）、図６（ａ）および図７（ａ）に太い実線Ｒ１で示すように、ヨーク１１の後側端縁１１９に沿って接着剤Ｒを塗布した後、接着剤Ｒを硬化させ、図１、図５（ｂ）、図６（ａ）および図７（ａ）に示すように、端子延在部１６９とヨーク１１の後側端縁１１９との間に介在する隙間Ｇを封止する。かかる接着剤Ｒとして、本形態では光硬化性接着剤が用いられている。 In this state, as shown in FIGS. 5A and 5E, the side plate portion 112 of the yoke 11 is opposed to the terminal extending portion 169 on the radially outer side. Here, the radially inner surface of the side plate 112 of the yoke 11 contacts the protrusion 199 of the base 19, while the terminal extension 169 of the power supply terminal 16 contacts the bottom 195 a of the groove-shaped recess 195, It is positioned in the radial direction. Therefore, a gap G is interposed between the radially outer surface of the terminal extending portion 169 and the radially inner surface of the side plate portion 112 of the yoke 11, thereby preventing a short circuit between the power supply terminal 16 and the yoke 11. Is done. However, if there is a gap G between the yoke 11 and the power supply terminal 16, foreign matter may enter the inside of the yoke 11. Therefore, in this embodiment, after the adhesive R is applied along the rear end edge 119 of the yoke 11, as shown by the thick solid line R1 in FIGS. 5 (b), 6 (a), and 7 (a). Then, the adhesive R is cured, and as shown in FIGS. 1, 5 (b), 6 (a), and 7 (a), between the terminal extending portion 169 and the rear edge 119 of the yoke 11. The gap G interposed between the two is sealed. As the adhesive R, a photo-curable adhesive is used in this embodiment.
また、ベース１９にヨーク１１を被せると、ベース１９の外側面１９４において隙間Ｇに対してヨーク１１の後側端縁１１９が延在する方向で隣り合う位置には、ヨーク１１の後側端縁１１９とベース１９の段部１９８ｃとによって、ヨーク１１の後側端縁１１９に沿って延在する接着剤充填溝９７が構成される。ここで、ヨーク１１の後側端縁１１９は、給電端子１６において第１延在部１６３と第２延在部１６４とが形成する直角な屈曲部分１６７と径方向外側に重なる箇所に位置し、かかる屈曲部分１６７の内側まで段部１９８ｃが延在している。このため、接着剤充填溝１９７は、屈曲部分１６７の内側まで延在し、接着剤充填溝１９７と隙間Ｇは、略一直線状に並ぶことになる。そこで、本形態では、隙間Ｇを接着剤Ｒで封止する際、接着剤Ｒの塗布領域を隙間Ｇの長さ寸法よりも延長し、接着剤充填溝１９７内にも接着剤Ｒを充填する。従って、接着剤Ｒは、隙間Ｇを封止する部分と繋がるように接着剤充填溝９７に充填されることになる。それ故、ベース１９の外側面１９４とヨーク１１の後側端縁１１９との間も接着剤Ｒで封止される。 Further, when the yoke 11 is put on the base 19, the rear edge of the yoke 11 is located at a position adjacent to the gap G on the outer surface 194 of the base 19 in the direction in which the rear edge 119 of the yoke 11 extends. The adhesive filling groove 97 extending along the rear edge 119 of the yoke 11 is constituted by the step 198 c of the base 19 and the step 198 c. Here, the rear end edge 119 of the yoke 11 is located at a position where the first bent portion 163 formed by the first extending portion 163 and the second extending portion 164 overlaps the outer side in the radial direction in the power supply terminal 16. A stepped portion 198c extends to the inside of the bent portion 167. For this reason, the adhesive filling groove 197 extends to the inside of the bent portion 167, and the adhesive filling groove 197 and the gap G are arranged substantially in a straight line. Therefore, in this embodiment, when the gap G is sealed with the adhesive R, the application area of the adhesive R is extended beyond the length dimension of the gap G, and the adhesive R is filled in the adhesive filling groove 197 as well. . Therefore, the adhesive R is filled in the adhesive filling groove 97 so as to be connected to the portion sealing the gap G. Therefore, the space between the outer surface 194 of the base 19 and the rear end edge 119 of the yoke 11 is also sealed with the adhesive R.
（本形態の主な効果）
以上説明したように、本形態のレンズ駆動装置１０において、給電端子１６は、ヨーク１１の内側に配置された内部端子部１６０と、内部端子部１６０からベース１９の外側面１９４に沿って延在してヨーク１１の後側端縁１１９から外側に引き出された端子延在部１６９とを備え、端子延在部１６９は、ベース１９の外側面１９４に当接して径方向で位置決めされている。このため、給電端子１６をベース１９のスリット内に通す構成と違って、レンズ駆動装置１０の組立時に多大な手間を必要としないので、レンズ駆動装置１０の組立工程を効率よく行なうことができる。また、給電端子１６をスリット内に圧入する構成と違って、スリット内壁が擦れて粉が発生してレンズ１２１や撮像素子６０等に付着する等の不具合の発生を防止することができる。また、給電端子１６をベース１９のスリット内に通す構成と違って、ベース１９の外側面１９４に近い位置に端子延在部１６９が位置するため、端子延在部１６９と配線部材とのハンダ付けを効率よく行なうことができる。さらに、端子延在部１６９は、ベース１９の外側面１９４に当接して径方向で位置決めされているため、端子延在部１６９の近傍にヨーク１１が位置する場合でも、端子延在部１６９とヨーク１１との間に隙間Ｇを確実に確保でき、端子延在部１６９とヨーク１１とが短絡することがない。
(Main effects of this form)
As described above, in the lens driving device 10 of the present embodiment, the power supply terminal 16 extends along the outer surface 194 of the base 19 from the inner terminal portion 160 disposed inside the yoke 11 and the inner terminal portion 160. The terminal 11 is provided with a terminal extending portion 169 drawn out from the rear end edge 119 of the yoke 11, and the terminal extending portion 169 contacts the outer surface 194 of the base 19 and is positioned in the radial direction. For this reason, unlike the configuration in which the power supply terminal 16 is passed through the slit of the base 19, no great effort is required when assembling the lens driving device 10, so that the assembly process of the lens driving device 10 can be performed efficiently. Further, unlike the configuration in which the power supply terminal 16 is press-fitted into the slit, it is possible to prevent the occurrence of problems such as powder generated by rubbing the inner wall of the slit and adhering to the lens 121, the image sensor 60, and the like. Further, unlike the configuration in which the power supply terminal 16 is passed through the slit of the base 19, the terminal extending portion 169 is located near the outer surface 194 of the base 19, so that the terminal extending portion 169 and the wiring member are soldered. Can be performed efficiently. Further, since the terminal extending portion 169 is positioned in the radial direction in contact with the outer surface 194 of the base 19, even when the yoke 11 is located in the vicinity of the terminal extending portion 169, the terminal extending portion 169 The gap G can be reliably secured between the yoke 11 and the terminal extension 169 and the yoke 11 are not short-circuited.
また、本形態において、ベース１９の外側面１９４には、ヨーク１１の後側端縁１１９が当接する突部１９９等よりも径方向内側に凹んだ溝状凹部１９５が形成されており、端子延在部１６９は、溝状凹部１９５内で延在しているとともに、溝状凹部１９５の底部１９５ａに当接して径方向で位置決めされている。このため、ヨーク１１を大型化しなくても、給電端子１６をヨーク１１と短絡させることなく外部まで延在させることができる。 In this embodiment, the outer surface 194 of the base 19 is formed with a groove-shaped recess 195 that is recessed radially inward from the protrusion 199 and the like with which the rear end edge 119 of the yoke 11 contacts. The existing portion 169 extends in the groove-shaped recess 195 and is positioned in the radial direction in contact with the bottom portion 195 a of the groove-shaped recess 195. For this reason, even if the yoke 11 is not enlarged, the power feeding terminal 16 can be extended to the outside without being short-circuited with the yoke 11.
また、本形態において、端子延在部１６９に対して径方向外側には、端子延在部１６９との間に隙間Ｇを介してヨーク１１の後側端縁１１９が対向し、隙間Ｇは、接着剤Ｒにより封止されている。このため、給電端子１６とヨーク１１との短絡を阻止するための隙間Ｇを介してヨーク１１の内部に異物が侵入することを接着剤Ｒによって防止することができる。また、給電端子１６とヨーク１１との短絡を接着剤Ｒによって阻止することもできる。 Further, in this embodiment, the rear end edge 119 of the yoke 11 is opposed to the terminal extending portion 169 radially outside the terminal extending portion 169 with a gap G between the terminal extending portion 169 and the gap G is Sealed with an adhesive R. Therefore, the adhesive R can prevent foreign matter from entering the inside of the yoke 11 through the gap G for preventing a short circuit between the power supply terminal 16 and the yoke 11. Further, a short circuit between the power supply terminal 16 and the yoke 11 can be prevented by the adhesive R.
さらに、ベース１９の外側面１９４には、隙間Ｇに対してヨーク１１の後側端縁１１９が延在する方向で隣り合う位置でヨーク１１の後側端縁１１９に沿って延在する接着剤充填溝１９７を構成する段部１９８ｃが形成されており、接着剤Ｒは、隙間Ｇを封止する部分と繋がるように接着剤充填溝１９７に充填されている、このため、隙間Ｇの端部等といった接着剤Ｒで封止しにくい個所であっても、接着剤Ｒによって確実に封止することができる。従って、給電端子１６とヨーク１１の後側端縁１１９との隙間Ｇからヨーク１１の内部に異物が侵入することを確実に防止することができる。特に本形態の給電端子１６において、端子延在部１６９は、ヨーク１１の後側端縁１１９に沿う方向に延在する第１延在部１６３と、第１延在部１６３の先端部から光軸方向Ｌ後側に向けて屈曲して延在する第２延在部１６４とを備えていることから、隙間Ｇの端部は、第１延在部１６３と第２延在部１６４との屈曲部分１６７の内側といった接着剤Ｒを塗布しにくい個所に位置している。しかるに本形態では、接着剤充填溝１９７が第１延在部１６３と第２延在部１６４との屈曲部分１６７の内側まで延在しているため、屈曲部分１６７の内側等といった接着剤Ｒを充填しにくい個所であっても、接着剤Ｒを充填することができる。従って、給電端子１６とヨーク１１の後側端縁１１９との隙間Ｇからヨーク１１の内部に異物が侵入することを確実に防止することができる。 Further, an adhesive that extends along the rear edge 119 of the yoke 11 on the outer surface 194 of the base 19 at a position adjacent to the gap G in the direction in which the rear edge 119 of the yoke 11 extends. A step portion 198c constituting the filling groove 197 is formed, and the adhesive R is filled in the adhesive filling groove 197 so as to be connected to the portion sealing the gap G. Even in places where it is difficult to seal with the adhesive R, such as, the adhesive R can be reliably sealed. Accordingly, it is possible to reliably prevent foreign matter from entering the inside of the yoke 11 from the gap G between the power supply terminal 16 and the rear end edge 119 of the yoke 11. In particular, in the power supply terminal 16 of the present embodiment, the terminal extending portion 169 includes a first extending portion 163 extending in a direction along the rear side edge 119 of the yoke 11 and light from the distal end portion of the first extending portion 163. Since the second extending portion 164 that is bent and extends toward the rear side in the axial direction L is provided, the end portion of the gap G is formed between the first extending portion 163 and the second extending portion 164. It is located at a place where it is difficult to apply the adhesive R such as the inside of the bent portion 167. However, in this embodiment, since the adhesive filling groove 197 extends to the inside of the bent portion 167 of the first extending portion 163 and the second extending portion 164, the adhesive R such as the inside of the bent portion 167 is applied. Even in places where filling is difficult, the adhesive R can be filled. Accordingly, it is possible to reliably prevent foreign matter from entering the inside of the yoke 11 from the gap G between the power supply terminal 16 and the rear end edge 119 of the yoke 11.
２・・支持体
３・・移動体
１０・・レンズ駆動装置
１１・・ヨーク
１５・・スリーブ
１６・・給電端子
１９・・ベース
３１・・第１バネ部材
３２・・第２バネ部材
１１９・・ヨークの後側端縁
１４１、１４２・・コイル
１６９・・端子延在部
１９４・・ヨークの外側面
１９５・・溝状凹部
１９７・・接着剤充填溝
１９８ｃ・・段部
Ｇ・・隙間
Ｒ・・接着剤
2. Supporting body 3. Moving body 10. Lens drive device 11. Yoke 15. Sleeve 16. Feeding terminal 19. Base 31. First spring member 32. Second spring member 119. Rear edge 141, 142 of yoke, coil 169, terminal extension 194, outer surface 195 of yoke, groove-shaped recess 197, adhesive filling groove 198c, step G, gap R ·adhesive
Claims (5)
前記支持体は、前記移動体に対して光軸方向後側に設けられたベースと、該ベースの光軸方向前側および当該ベースの径方向外側に被さって前記移動体を覆うヨークと、を有し、
前記給電端子は、前記ヨークの内側で前記ベースの光軸方向前側に配置された内部端子部と、該内部端子部から光軸方向後側に向かって折れ曲がって前記ベースの外側面に沿って延在して前記ヨークの後側端縁から外側に引き出された端子延在部と、を備え、
前記内部端子部は、前記バネ部材が電気的に接続された接続部分と、前記ベースの光軸方向前側に固定された固定部分と、を備え、
前記ベースの光軸方向前側には突起が形成され、
前記固定部分には、前記突起が嵌る穴が形成されており、
前記固定部分は、前記突起が前記穴に嵌った状態で前記ベースの光軸方向前側に固定され、
前記端子延在部は、前記ベースの前記外側面に当接して径方向で位置決めされていることを特徴とするレンズ駆動装置。 A movable body including a lens; a support disposed outside the movable body; a magnetic drive mechanism including a coil and a magnet that magnetically drives the movable body in a lens optical axis direction; and the movable body and the support. In a lens driving device comprising: a spring member that connects a body; and a power supply terminal that is formed separately from the spring member and is electrically connected to the coil via the spring member.
The support includes a base provided on the rear side in the optical axis direction with respect to the moving body, and a yoke that covers the front side of the base in the optical axis direction and the outer side in the radial direction of the base to cover the moving body. And
The power supply terminal includes an inner terminal portion disposed on the front side in the optical axis direction of the base inside the yoke, and extends along the outer surface of the base by bending from the inner terminal portion toward the rear side in the optical axis direction. And a terminal extension portion that is pulled out from the rear end edge of the yoke, and
The internal terminal portion includes a connection portion to which the spring member is electrically connected, and a fixed portion fixed to the front side in the optical axis direction of the base.
A protrusion is formed on the front side of the optical axis direction of the base,
The fixing part is formed with a hole into which the protrusion is fitted,
The fixed portion is fixed to the front side in the optical axis direction of the base in a state where the protrusion is fitted in the hole,
The terminal extending part, a lens driving apparatus characterized by being positioned in contact with radially outer surfaces of said base.
前記端子延在部は、前記溝状凹部内で延在しているとともに、当該溝状凹部において径方向内側に位置する底部に当接して径方向で位置決めされていることを特徴とする請求項１に記載のレンズ駆動装置。 The outer surface of the base is formed with a groove-like recess recessed inward in the radial direction,
The terminal extending portion extends in the groove-shaped recess, and is positioned in a radial direction in contact with a bottom portion located radially inward in the groove-shaped recess. 2. The lens driving device according to 1.
前記隙間は、接着剤により封止されていることを特徴とする請求項１または２に記載のレンズ駆動装置。 On the radially outer side with respect to the terminal extension portion, the rear side edge of the yoke is opposed to the terminal extension portion via a gap,
The lens driving device according to claim 1, wherein the gap is sealed with an adhesive.
前記接着剤は、前記隙間を封止する部分と繋がるように前記接着剤充填溝に充填されていることを特徴とする請求項３に記載のレンズ駆動装置。 An adhesive filling groove extending along the rear edge of the yoke is formed on the outer surface of the base at a position adjacent to the gap in a direction in which the rear edge of the yoke extends. A step is formed,
The lens driving device according to claim 3, wherein the adhesive is filled in the adhesive filling groove so as to be connected to a portion that seals the gap.
前記接着剤充填溝は、前記第１延在部と前記第２延在部との屈曲部分の内側まで延在していることを特徴とする請求項４に記載のレンズ駆動装置。 The terminal extending portion includes a first extending portion extending in a direction along the rear edge of the yoke, and a bent portion extending from the front end portion of the first extending portion toward the rear side in the optical axis direction. A second extending portion,
5. The lens driving device according to claim 4, wherein the adhesive filling groove extends to an inner side of a bent portion of the first extending portion and the second extending portion.
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| JP2010014666A JP5530201B2 (en) | 2010-01-26 | 2010-01-26 | Lens drive device |
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| JP2010014666A JP5530201B2 (en) | 2010-01-26 | 2010-01-26 | Lens drive device |
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| JP5530201B2 true JP5530201B2 (en) | 2014-06-25 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5762895B2 (en) * | 2011-09-12 | 2015-08-12 | 日本電産サンキョー株式会社 | Lens drive device |
| JP5824338B2 (en) * | 2011-11-16 | 2015-11-25 | 日本電産サンキョー株式会社 | Lens drive device |
| JP5908332B2 (en) * | 2012-04-27 | 2016-04-26 | 日本電産サンキョー株式会社 | Lens drive device |
| JP6207180B2 (en) * | 2013-03-11 | 2017-10-04 | 台湾東電化股▲ふん▼有限公司 | Lens holding device |
| CN112782905B (en) * | 2015-01-28 | 2024-04-02 | Lg伊诺特有限公司 | Lens driving device, camera module and optical device |
| KR102651623B1 (en) * | 2016-05-30 | 2024-03-27 | 엘지이노텍 주식회사 | Lens driving device, camera module and optical apparatus |
| KR102580306B1 (en) * | 2016-07-21 | 2023-09-18 | 엘지이노텍 주식회사 | A lens moving unit, and camera module and optical instrument including the same |
| WO2018198796A1 (en) * | 2017-04-25 | 2018-11-01 | アルプス電気株式会社 | Lens drive device, camera module using lens drive device, and method for manufacturing lens drive device |
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| JP2005121893A (en) * | 2003-10-16 | 2005-05-12 | Sankyo Seiki Mfg Co Ltd | Lens driving apparatus, portable equipment with camera and manufacturing method of lens driving apparatus |
| JP4682653B2 (en) * | 2005-03-14 | 2011-05-11 | ミツミ電機株式会社 | Autofocus actuator |
| JP4686739B2 (en) * | 2006-05-09 | 2011-05-25 | シコー株式会社 | Lens drive device |
| JP4919422B2 (en) * | 2007-07-03 | 2012-04-18 | シコー株式会社 | Lens driving device manufacturing method, lens driving device, camera and camera-equipped mobile phone |
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