JP2009300902A5 - - Google Patents
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- JP2009300902A5 JP2009300902A5 JP2008157484A JP2008157484A JP2009300902A5 JP 2009300902 A5 JP2009300902 A5 JP 2009300902A5 JP 2008157484 A JP2008157484 A JP 2008157484A JP 2008157484 A JP2008157484 A JP 2008157484A JP 2009300902 A5 JP2009300902 A5 JP 2009300902A5
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- 230000002093 peripheral Effects 0.000 claims description 53
- 230000003287 optical Effects 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 6
- 230000002265 prevention Effects 0.000 description 6
- 238000003780 insertion Methods 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 230000000875 corresponding Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001070 adhesive Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Description
本発明は、小型カメラに用いられるオートフォーカス用のレンズ駆動装置、そのレンズ駆動装置を搭載したカメラ及びカメラ付き携帯電話に関する。 The present invention relates to a lens driving device for autofocus used for a small camera, a camera equipped with the lens driving device, and a mobile phone with a camera.
特許文献１には、レンズ支持体の外周面に半径方向外方に突設したコイル固定部を設け、コイル固定部に取り付けたコイルをヨークの外周壁と内側壁との間に配置したレンズ駆動装置が開示されている。 In Patent Document 1, a lens driving unit is provided in which a coil fixing portion protruding radially outward is provided on the outer peripheral surface of a lens support, and a coil attached to the coil fixing portion is disposed between the outer peripheral wall and the inner side wall of the yoke. An apparatus is disclosed.
この特許文献１には直接の記載はないが、一般にレンズ支持体の内周面にはねじ溝が設けてあり、レンズ支持体の内側にレンズバレルを螺合により取り付けている。 Although there is no direct description in Patent Document 1, generally, a thread groove is provided on the inner peripheral surface of the lens support, and a lens barrel is attached to the inside of the lens support by screwing.
レンズ駆動装置は、ヨークに対してレンズ支持体をスプリングで支持して組み付けており、レンズバレルは、レンズ駆動装置の組立て後、レンズ支持体の内周に螺合するが、螺合するときにレンズ支持体が回転するとスプリングを損傷するおそれがあるので、回転防止治具を用いてレンズ支持体の回転を防止すると共に筺体やスプリングには回転防止治具を取り付ける為の加工を必要としていた。 The lens driving device is assembled by supporting the lens support with a spring with respect to the yoke, and the lens barrel is screwed to the inner periphery of the lens support after the lens driving device is assembled. If the lens support rotates, the spring may be damaged. Therefore, the rotation of the lens support is prevented by using an anti-rotation jig, and processing for attaching the anti-rotation jig to the housing and the spring is required.
しかし、上述した従来のレンズ駆動装置では、レンズバレルを組み付けるときには、レンズ支持体の回転を防止する回転防止用治具を用いて、レンズ支持体が回らないように固定するので、組立て作業に手間がかかるという問題があった。また、レンズ駆動装置の構成部品、例えばスプリングに回転防止用治具を取り付ける為の加工（孔や溝）を施しておく必要があるので、スプリング等の構成部品の設計に制限があった。 However, in the conventional lens driving device described above, when assembling the lens barrel, the lens support is fixed so that it does not rotate using a rotation prevention jig that prevents the lens support from rotating. There was a problem that it took. In addition, since it is necessary to perform processing (holes and grooves) for mounting a rotation prevention jig on a component part of the lens driving device, for example, a spring, there is a limitation in designing a component part such as a spring.
そこで、本発明は、回転防止用治具を用いることなくレンズバレルの組み付けができ且つ設計の自由度が高いレンズ駆動装置、そのレンズ駆動装置を搭載したカメラ及びカメラ付き携帯電話の提供を目的とする。 Therefore, the present invention has an object to provide a lens driving device capable of assembling a lens barrel without using a rotation prevention jig and having a high degree of design freedom, a camera equipped with the lens driving device, and a mobile phone with a camera. To do.
請求項１に記載の発明は、環状のヨークと、外周にコイルが固定されたレンズ支持体と、複数のマグネットと、スプリングと、ベースとを備え、ヨークは、外周壁と、外周壁の内周側で周方向に間隔を空けて配置した内側壁と、外周壁と内側壁とを連結する連結壁とを有し、各マグネットはヨーク内側壁との間に間隔を空けてヨーク外周壁の内周面に固定してあり且つ隣合うマグネットが周方向に間隔を空けて配置してあり、レンズ支持体はヨークの内周側に配置して内周にレンズバレルが回転により装着されるものであり、コイルはヨークの内側壁がある箇所では内側壁とマグネットとの間に配置されており、スプリングはベース又はヨークと、レンズ支持体との間に設けてベースに対してレンズ支持体を光軸方向の前後に移動自在に支持しており、コイルに通電して生じる電磁力によりレンズ支持体をレンズの光軸方向に移動するレンズ駆動装置であって、レンズ支持体は外周に複数のコイル固定部が設けてあり、各コイル固定部は半径方向外方に突設し且つ周方向端面がヨーク内側壁の周方向端面に対面して配置されていることを特徴とする。 The invention according to claim 1 includes an annular yoke, a lens support having a coil fixed to the outer periphery, a plurality of magnets, a spring, and a base. The yoke includes an outer peripheral wall and an inner wall of the outer peripheral wall. An inner wall arranged at a circumferential interval on the circumferential side and a connecting wall connecting the outer wall and the inner wall, and each magnet is spaced from the inner wall of the yoke and spaced from the yoke outer wall. Fixed to the inner peripheral surface, adjacent magnets are arranged at intervals in the circumferential direction, and the lens support is arranged on the inner peripheral side of the yoke, and the lens barrel is mounted on the inner periphery by rotation The coil is disposed between the inner wall and the magnet where the yoke has the inner wall, and the spring is provided between the base or the yoke and the lens support so that the lens support is placed against the base. Supports movability back and forth in the optical axis direction The lens driving device moves the lens support in the direction of the optical axis of the lens by electromagnetic force generated by energizing the coil. The lens support has a plurality of coil fixing portions on the outer periphery, and each coil is fixed. The portion protrudes outward in the radial direction, and the circumferential end surface is arranged to face the circumferential end surface of the yoke inner wall.
請求項２に記載の発明は、請求項１に記載の発明において、内側壁は連結壁に連続する部分を内周側に折り曲げて形成してあり、内側壁の周方向両側には連結壁の内周縁に切込み部が設けてあることを特徴とする。 According to a second aspect of the present invention, in the first aspect of the invention, the inner wall is formed by bending a portion continuous with the connecting wall toward the inner peripheral side, and the connecting wall is formed on both sides of the inner wall in the circumferential direction. The inner peripheral edge is provided with a cut portion.
請求項３に記載の発明は、請求項２に記載の発明において、スプリングは、前側スプリングと後側スプリングとの２つのスプリングであり、前側スプリングは、外周側部をヨーク連結壁のコイル側に固定し、内周側部をレンズ支持体に固定してあり、後側スプリングは前側スプリングよりもベース側でレンズ支持体を支持していることを特徴とする。
請求項４に記載の発明は、請求項３に記載の発明において、レンズ支持体のコイル固定部には、周方向の一端に嵌合部が形成されており、レンズバレルには外周に被嵌合部が形成されており、レンズバレルを周方向に回転するとコイル固定部の嵌合部とレンズバレルの被嵌合部が嵌合することを特徴とする。
The invention according to claim 3 is the invention according to claim 2 , wherein the springs are two springs, a front side spring and a rear side spring, and the front side spring has an outer peripheral side portion on the coil side of the yoke connecting wall. The inner side is fixed to the lens support, and the rear spring supports the lens support on the base side with respect to the front spring .
According to a fourth aspect of the present invention, in the third aspect of the present invention, the coil fixing portion of the lens support is formed with a fitting portion at one end in the circumferential direction, and the lens barrel is fitted on the outer periphery. A joint portion is formed, and when the lens barrel is rotated in the circumferential direction, the fitting portion of the coil fixing portion and the fitted portion of the lens barrel are fitted .
請求項５に記載の発明は、請求項１〜４の何れか一項に記載のレンズ駆動装置を搭載したことを特徴とするカメラである。 According to a fifth aspect of the present invention, there is provided a camera comprising the lens driving device according to any one of the first to fourth aspects.
請求項６に記載の発明は、請求項５に記載のカメラを搭載したことを特徴とするカメラ付き携帯電話である。 A sixth aspect of the present invention is a camera-equipped mobile phone in which the camera according to the fifth aspect is mounted.
請求項１に記載の発明によれば、レンズバレルの組み付けは、レンズ支持体の内周にレンズバレルを挿入してレンズバレルを回転して組み付ける。レンズバレルの回転に連れ回りしてレンズ支持体が回転しようとするが、レンズ支持体が回転しようとするとレンズ支持体のコイル固定部の端面が、ヨーク内側壁の周方向端面に当接して回転が阻止される。 According to the first aspect of the present invention, the lens barrel is assembled by inserting the lens barrel into the inner periphery of the lens support and rotating the lens barrel. The lens support tries to rotate as the lens barrel rotates, but when the lens support tries to rotate, the end surface of the coil fixing part of the lens support contacts the circumferential end surface of the inner wall of the yoke and rotates. Is blocked.
従って、本発明によれば、従来用いていた回転防止治具を用いることなくレンズバレルの組み付けができ、組み付け作業が容易である。 Therefore, according to the present invention, it is possible to assemble the lens barrel without using the conventionally used anti-rotation jig, and the assembling work is easy.
また、スプリング等の構成部品に回転防止治具取付け用の穴等の加工を施す必要がないので、設計の自由度が高いと共に部品強度を高めることができる。 In addition, since it is not necessary to process a hole for attaching a rotation prevention jig to a component such as a spring, the degree of freedom in design is high and the strength of the part can be increased.
レンズバレルの組付後において、レンズ駆動装置が落下や揺れ等から外力を受けてレンズ支持体が回転しようとしても、レンズ支持体のコイル固定部がヨークの内側壁に当接してレンズ支持体の回転が防止できるので、落下や揺れ等によるスプリングの損傷（変形を含む）を防止できる。 After the lens barrel is assembled, even if the lens driving device receives an external force from dropping or shaking, and the lens support rotates, the coil fixing portion of the lens support contacts the inner wall of the yoke and the lens support Since rotation can be prevented, damage (including deformation) of the spring due to dropping or shaking can be prevented.
請求項２に記載の発明によれば、請求項１に記載の作用効果を得ることができると共に、内側壁を折り曲げて形成するときに折り曲げが容易にできる。 According to the second aspect of the present invention, the function and effect of the first aspect can be obtained, and the inner wall can be easily bent when formed.
請求項３に記載の発明によれば、請求項２に記載の作用効果を得ることができると共に、ヨークの内部に前側スプリングを収めているので、前側スプリングをヨークの外面に固定するフレーム等の部品が不要になり、部品点数の削減ができると共にレンズ光軸方向の寸法を小さくでき、更なる小型化を図ることができる。
請求項４に記載の発明によれば、請求項３に記載の作用効果を得ることができると共に、レンズバレルの組み付け時に、レンズバレルは一回転（３６０度）以上回転する必要がなく、所定角度回転すれば組み付けできるから、レンズバレルを何回転もしてねじ螺合する場合に比較して組み付け作業が容易である。
According to the invention described in claim 3, since the function and effect described in claim 2 can be obtained and the front spring is housed in the yoke, a frame for fixing the front spring to the outer surface of the yoke, etc. No components are required, the number of components can be reduced, the dimensions in the lens optical axis direction can be reduced, and further miniaturization can be achieved.
According to the invention described in claim 4, it is possible to obtain the function and effect described in claim 3, and when the lens barrel is assembled, the lens barrel does not need to be rotated once (360 degrees) or more, and the predetermined angle is obtained. Since it can be assembled by rotating it, the assembling work is easier compared with the case where the lens barrel is screwed together after many rotations.
請求項５に記載の発明によれば、請求項１〜４の何れか一項に記載の作用効果を得ることができるカメラを提供できる。 According to invention of Claim 5 , the camera which can acquire the effect as described in any one of Claims 1-4 can be provided.
請求項６に記載の発明によれば、請求項５に記載の作用効果を奏するカメラ付き携帯電話を提供できる。 According to the invention described in claim 6 , it is possible to provide a camera-equipped mobile phone having the function and effect described in claim 5 .
以下に、添付図面を参照して本発明の実施の形態を説明する。図１は本発明の実施の形態に係るレンズ駆動装置であり、（ａ）はレンズ駆動装置の角部においてヨークとレンズ支持体とベースとを抜き出して示す斜視図であり、（ｂ）は（ａ）を内周側から見た正面図であり、図２は本発明の実施の形態に係るレンズ駆動装置の角部をレンズバレルを取り付けた状態で切断した斜視図であり、図３はコイルとレンズ支持体の斜視図であり、図４はレンズバレルの斜視図であり、図５は本発明の実施の形態に係るレンズ駆動装置の分解斜視図であり、図６はレンズ駆動装置を角部と辺部との位置で切断して示す縦断面図である。 Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a lens driving device according to an embodiment of the present invention. FIG. 1A is a perspective view showing a yoke, a lens support, and a base extracted from a corner of the lens driving device, and FIG. FIG. 2 is a front view of a) as viewed from the inner peripheral side, FIG. 2 is a perspective view in which a corner portion of the lens driving device according to the embodiment of the present invention is cut with a lens barrel attached, and FIG. 4 is a perspective view of the lens barrel, FIG. 5 is an exploded perspective view of the lens driving device according to the embodiment of the present invention, and FIG. 6 is a perspective view of the lens driving device. It is a longitudinal cross-sectional view cut | disconnected and shown in the position of a part and a side part.
本実施の形態に係るレンズ駆動装置１は、携帯電話に組み込まれるオートフォーカスカメラのレンズ駆動装置である。このレンズ駆動装置１は、図５及び図６に示すように、環状のヨーク３と、レンズ支持体７と、前側スプリング９と、後側スプリング１１と、ベース５とを備えており、レンズ支持体７には、外周にコイル１５が固定されている。ヨーク３と後側スプリング１１との間には後側絶縁体（後側スペーサ）１７が配置されており、ヨーク３と前側スプリング９との間には前側スペーサ１８が配置されている。このレンズ駆動装置１は、縦横が約１０ｍｍ、高さが約３．５ｍｍで非常に小さいものである。 A lens driving device 1 according to the present embodiment is a lens driving device for an autofocus camera incorporated in a mobile phone. As shown in FIGS. 5 and 6, the lens driving device 1 includes an annular yoke 3, a lens support 7, a front spring 9, a rear spring 11, and a base 5. A coil 15 is fixed to the outer periphery of the body 7. A rear insulator (rear spacer) 17 is disposed between the yoke 3 and the rear spring 11, and a front spacer 18 is disposed between the yoke 3 and the front spring 9. This lens driving device 1 is very small with about 10 mm in length and width and about 3.5 mm in height.
ヨーク３は前側から見て外周が平面視四角形であり、内周が平面視円形になっており、外周壁３ａと、外周壁３ａの内周側で周方向に間隔を空けて配置した内側壁３ｂと、外周壁３ａと内側壁３ｂとを連結する連結壁３ｃとからなり、外周壁３ａと内側壁３ｂと連結壁３ｃとで断面がコ字形状を成している。内側壁３ｂは連結壁３ｃに連続する部分を折り曲げて形成してあり、その周方向両側には折り曲げを容易にする切込み部１６が形成されている。 The yoke 3 has a quadrangular outer periphery when viewed from the front side and a circular inner periphery when viewed from the front side, and the outer peripheral wall 3a and an inner wall disposed at intervals in the circumferential direction on the inner peripheral side of the outer peripheral wall 3a. 3b and a connecting wall 3c that connects the outer peripheral wall 3a and the inner wall 3b, and the outer peripheral wall 3a, the inner wall 3b, and the connecting wall 3c have a U-shaped cross section. The inner wall 3b is formed by bending a portion continuous with the connecting wall 3c, and cut portions 16 are formed on both sides in the circumferential direction to facilitate bending.
各内側壁３ｂは周方向に間隔を空けて設けており、各内側壁３ｂは平面視四角形状のヨークの角部１４に対応する位置にのみ設けてある。 The inner side walls 3b are provided at intervals in the circumferential direction, and the inner side walls 3b are provided only at positions corresponding to the corners 14 of the yoke having a square shape in plan view.
ヨーク３の各角部１４において、外周壁３ａの内周面にはマグネット１３が固定されている。マグネット１３は、角部１４のみに設けてある。 At each corner 14 of the yoke 3, a magnet 13 is fixed to the inner peripheral surface of the outer peripheral wall 3a. The magnet 13 is provided only on the corner portion 14.
レンズ支持体７は、ヨーク３の内周側に配置して前側スプリング９と後側スプリング１１とで支持してあり、その内周にレンズバレル（図２及び図４参照）２０が組み付けてあり、ヨーク３の内周側を光軸方向（前後方向）に移動自在に設けられている。レンズ支持体７の外周には環状のコイル１５が装着されており、コイル１５はレンズ支持体７に一体に設けたコイル固定部１９に接着固定されている。コイル固定部１９は、図２及び図３に示すように、コイル１５の後端面を受けるコイル載置部１９ａと、コイルの内周側面を受けるコイル内周受部１９ｂとを有し、コイル内周受部１９ｂはヨーク内側壁３ｂと干渉する位置まで半径方向外方に突設して設けてあり、コイル載置部１９ａはヨーク内側壁３ｂよりも半径方向外側に突設して、コイル内周受部１９ｂとコイル載置部１９ａとは段状に形成されている。 The lens support 7 is disposed on the inner peripheral side of the yoke 3 and supported by a front spring 9 and a rear spring 11, and a lens barrel (see FIGS. 2 and 4) 20 is assembled on the inner periphery thereof. The inner periphery side of the yoke 3 is provided to be movable in the optical axis direction (front-rear direction). An annular coil 15 is mounted on the outer periphery of the lens support 7, and the coil 15 is bonded and fixed to a coil fixing portion 19 provided integrally with the lens support 7. As shown in FIGS. 2 and 3, the coil fixing portion 19 includes a coil placement portion 19a that receives the rear end surface of the coil 15, and a coil inner peripheral receiving portion 19b that receives the inner peripheral side surface of the coil. The peripheral receiving portion 19b is provided so as to protrude radially outward to a position where it interferes with the yoke inner wall 3b, and the coil mounting portion 19a protrudes radially outward from the yoke inner wall 3b. The periphery receiving part 19b and the coil mounting part 19a are formed in a step shape.
図１及び図３に示すように、コイル内周受部１９ｂの周方向端面には、レンズバレルを嵌合固定する嵌合部２３が形成されている。本実施の形態では、嵌合部２３は凹である。 As shown in FIGS. 1 and 3, a fitting portion 23 for fitting and fixing the lens barrel is formed on the circumferential end surface of the coil inner periphery receiving portion 19b. In the present embodiment, the fitting portion 23 is concave.
コイル１５は、ヨーク外周壁３ａの内周側に配置するが、マグネット１３が配置されているヨーク３の角部１４では、マグネット１３と内側壁３ｂとの間に位置し、レンズ支持体７と共にヨーク３内を前後方向に移動するようになっている。 The coil 15 is disposed on the inner peripheral side of the yoke outer peripheral wall 3a. At the corner portion 14 of the yoke 3 where the magnet 13 is disposed, the coil 15 is positioned between the magnet 13 and the inner wall 3b, together with the lens support 7. The yoke 3 moves in the front-rear direction.
コイル１５は、コイル載置部１９ａとコイル内周受部１９ｂとの２面に各々接着剤で固定されている。 The coil 15 is fixed to each of two surfaces of the coil mounting portion 19a and the coil inner periphery receiving portion 19b with an adhesive.
図２及び図５に示すように、ベース５には後側スプリング１１の外周側部１１ｂが載置されており、後側スプリング１１の外周側部１１ｂには後側絶縁体１７を介してヨーク５が載置されている。 As shown in FIGS. 2 and 5, the outer peripheral side portion 11 b of the rear spring 11 is placed on the base 5, and the outer peripheral side portion 11 b of the rear spring 11 is attached to the yoke via the rear insulator 17. 5 is placed.
前側スプリング９は環状の板ばねであり、内周側部９ａと外周側部９ｂとが設けてあり、内周側部９ａはレンズ支持体７のコイル固定部１９に取り付けてあり、外周側部９ｂはヨーク連結壁３ｃのコイル１５側で、ヨーク連結壁３ｃに前側スペーサ１８を介在して固定されている。内周側部９ａと外周側部９ｂとは弾性変形可能な腕部９ｃにより連結してある。 The front spring 9 is an annular leaf spring, and is provided with an inner peripheral side portion 9a and an outer peripheral side portion 9b. The inner peripheral side portion 9a is attached to the coil fixing portion 19 of the lens support 7, and the outer peripheral side portion. 9b is a coil 15 side of the yoke connecting wall 3c, and is fixed to the yoke connecting wall 3c with a front spacer 18 interposed. The inner peripheral side portion 9a and the outer peripheral side portion 9b are connected by an elastically deformable arm portion 9c.
後側スプリング１１は全体として環状の板ばねであるが、本実施の形態では、左右に分割した一方側部３０と他方側部３２とから構成されている。後側スプリング１１の各外周側部１１ｂ、１１ｂは、絶縁体（スペーサ）１７を介してベース５とヨーク３との間に挟持されており、絶縁体１７は後側スプリング１１とヨーク３との間の電気的絶縁を図っている。各内周側部１１ａ、１１ａは、レンズ支持体７の後端に取り付けてある。後側スプリング１１の各内周側部９ａと外周側部９ｂとは弾性変形可能な腕部１１ｃにより連結してある。 Although the rear spring 11 is an annular leaf spring as a whole, in this embodiment, the rear spring 11 is composed of one side portion 30 and the other side portion 32 which are divided into left and right. The outer peripheral side portions 11 b and 11 b of the rear spring 11 are sandwiched between the base 5 and the yoke 3 via an insulator (spacer) 17, and the insulator 17 is formed between the rear spring 11 and the yoke 3. The electrical insulation between them is intended. The inner peripheral side portions 11 a and 11 a are attached to the rear end of the lens support 7. Each inner peripheral side portion 9a and outer peripheral side portion 9b of the rear spring 11 are connected by an elastically deformable arm portion 11c.
本実施の形態では、後側スプリング１１を構成する一方側部３０には端子３３が形成されており、他方側部３２には端子３５が形成されて各端子３３、３５が電源供給端子に接続されるようになっている。尚、一方側部３０と他方側部３２とは、各々コイル１５にハンダ付け等により電気的に接続されており、後側スプリング１１からコイル１５に通電するようになっている。 In the present embodiment, a terminal 33 is formed on one side 30 constituting the rear spring 11, and a terminal 35 is formed on the other side 32, and each terminal 33, 35 is connected to a power supply terminal. It has come to be. The one side portion 30 and the other side portion 32 are electrically connected to the coil 15 by soldering or the like, respectively, and the coil 15 is energized from the rear spring 11.
これらの前側スプリング９と後側スプリング１１とは、組立て前の自然状態（フレーム６を組付ける前の状態）において平坦であるが（図５参照）、少なくとも前側スプリング９は、組み付け後には、内周側部９ａが外周側部９ｂよりも前方に位置するように弾性変形した状態で取り付けてある。これにより、ばねの復帰力（付勢力）により内周側部９ａがレンズ支持体７をベース５側に向けた付勢力で常時付勢するようにしている。 The front spring 9 and the rear spring 11 are flat in a natural state before assembly (a state before the frame 6 is assembled) (see FIG. 5), but at least the front spring 9 is not The peripheral side portion 9a is attached in a state of being elastically deformed so as to be positioned in front of the outer peripheral side portion 9b. As a result, the inner peripheral side portion 9a constantly urges the lens support 7 with the urging force directed toward the base 5 by the restoring force (urging force) of the spring.
図４に示すように、レンズバレル２０は、上面に等間隔に４つの凹（穴）を形成して治具の差し込み穴２５としてあり、外周面には、被嵌合２７が形成されている。この被嵌合部２７は、周方向に突設する凸部であり、レンズ支持体７のコイル内周受部１９ｂに形成された嵌合部２３と嵌合するようになっている。 As shown in FIG. 4, the lens barrel 20 has four recesses (holes) formed at equal intervals on the upper surface to form jig insertion holes 25, and a fitting 27 is formed on the outer peripheral surface. . The fitted portion 27 is a convex portion protruding in the circumferential direction, and is fitted to the fitting portion 23 formed on the coil inner circumference receiving portion 19 b of the lens support 7.
次に、本発明に係るレンズ駆動装置１にレンズバレル２０を組み付ける方法、作用及び効果について説明する。 Next, a method, an action, and an effect of assembling the lens barrel 20 to the lens driving device 1 according to the present invention will be described.
本発明に係るレンズ駆動装置１にレンズバレル２０を組み付けるときには、レンズバレルの治具差し込み穴２５に、例えばピンセットを差し込んでレンズバレル２０を摘み、レンズ支持体の内周側に挿入し、数度（例えば２〜５度）レンズバレル２０を回すと、レンズバレル２０の被嵌合部２７がレンズ支持体７の嵌合部２３に嵌合してレンズバレル２０がレンズ支持体７に固定される。 When the lens barrel 20 is assembled to the lens driving device 1 according to the present invention, for example, tweezers are inserted into the jig insertion hole 25 of the lens barrel, the lens barrel 20 is picked, inserted into the inner peripheral side of the lens support, and several times. When the lens barrel 20 is rotated (for example, 2 to 5 degrees), the fitted portion 27 of the lens barrel 20 is fitted to the fitted portion 23 of the lens support 7 and the lens barrel 20 is fixed to the lens support 7. .
レンズバレル２０を回すときにレンズ支持体７が連れ回りしようとすると、図１（ｂ）に示すように、レンズ支持体７のコイル固定部１９においてコイル内周受部１９ｂの周方向端面１９ｅがヨーク内側壁３ｂの周方向端面３ｅに当接してレンズ支持体７の回転が阻止される。 When the lens support 7 tries to rotate when the lens barrel 20 is rotated, as shown in FIG. 1B, the circumferential end face 19e of the coil inner periphery receiving portion 19b is formed in the coil fixing portion 19 of the lens support 7. The contact with the circumferential end surface 3e of the yoke inner wall 3b prevents the lens support 7 from rotating.
従って、本発明によれば、レンズバレル２０の組み付けに、従来用いていた回転防止治具を用いる必要がないので、組み付け作業が容易にできる。 Therefore, according to the present invention, it is not necessary to use a rotation prevention jig that has been conventionally used for assembling the lens barrel 20, so that the assembling work can be facilitated.
レンズバレル２０の組み付け後においても、カメラ付き携帯電話の落下や揺れ等によりレンズ支持体７が回転しようとすると、コイル内周受部１９ｂの周方向端面１９ｅがヨーク内側壁３ｂの周方向端面３ｅに当接してレンズ支持体７の回転が防止できるので、落下や揺れ等による前側スプリング９や後側スプリング１１の損傷を防止できる。 Even after the lens barrel 20 is assembled, if the lens support 7 is rotated due to dropping or shaking of the camera-equipped mobile phone, the circumferential end surface 19e of the coil inner periphery receiving portion 19b becomes the circumferential end surface 3e of the yoke inner wall 3b. Since the rotation of the lens support 7 can be prevented by abutting against the front spring 9, it is possible to prevent the front spring 9 and the rear spring 11 from being damaged due to dropping or shaking.
レンズ駆動装置１の構成部品、例えばベース５や前側スプリング９等に回転防止治具の挿入孔等の加工を施す必要がないので設計しやすいと共に部品強度を高めることができる。 Since it is not necessary to process the components such as the base 5 and the front spring 9 in the lens driving device 1 such as the insertion hole of the rotation prevention jig, the design is easy and the strength of the component can be increased.
レンズ支持体７のコイル固定部１９には周方向端部に嵌合部２３を形成し、レンズバレル２０の外周に被嵌合部２７を形成してレンズバレル２０を周方向に回転することによりレンズバレル２０がレンズ支持体７に嵌合する構成であるから、レンズバレル２０をレンズ支持体７に組み付けるときに、レンズバレル２０は３６０度よりも少ない角度回転すれば組み付けできるから、レンズバレル２０を何回転もしてねじ螺合する場合に比較して組み付け作業が容易にできる。 A fitting portion 23 is formed at the circumferential end of the coil fixing portion 19 of the lens support 7, a fitted portion 27 is formed on the outer periphery of the lens barrel 20, and the lens barrel 20 is rotated in the circumferential direction. Since the lens barrel 20 is configured to be fitted to the lens support 7, when the lens barrel 20 is assembled to the lens support 7, the lens barrel 20 can be assembled by rotating at an angle smaller than 360 degrees. As compared with the case where screws are screwed together after many rotations, the assembling work can be facilitated.
ヨーク３の内部に前側スプリング９を収めているので、前側スプリング９をヨーク３の外面に固定する為に従来使用していたフレームが不要になり、部品点数の削減ができると共にフレームがない分レンズ光軸方向の寸法を小さくでき、更なる小型化を図ることができる。 Since the front spring 9 is housed inside the yoke 3, a frame that has been conventionally used to fix the front spring 9 to the outer surface of the yoke 3 is not required, and the number of components can be reduced and the lens can be reduced. The dimension in the optical axis direction can be reduced, and further miniaturization can be achieved.
レンズバレル２０は、上面に複数の治具の差し込み穴２５を形成しているので、ピンセット等で用意にレンズバレル２０を掴むことができ、組み付け作業がし易い。 Since the lens barrel 20 has a plurality of jig insertion holes 25 formed on the upper surface, the lens barrel 20 can be easily grasped with tweezers or the like, and the assembly work is easy.
また、レンズバレル２０の上面に突設部がないから、レンズバレル２０の光軸方向寸法を小さくできる。 In addition, since there is no protruding portion on the upper surface of the lens barrel 20, the dimension of the lens barrel 20 in the optical axis direction can be reduced.
本発明は、上述した実施の形態に限らず、本発明の要旨を逸脱しない範囲で種々変形可能である。 The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.
例えば、図７に示すように、レンズ支持体７には内周面に雌ねじ５２を形成し、レンズバレル２０（図示せず）の外周面にはレンズ支持体７雌ねじ５２に歯合する雄ねじを形成して、レンズ支持体７にレンズバレル２０を螺合により取り付けるものであっても良い。尚、図７ではコイル１５、マグネット１３及び後側スプリングを除いて示していると共に、ヨーク３の前側にフレーム５１を配置し、フレーム５１とヨーク３との間に前側スプリング９を挟持している。 For example, as shown in FIG. 7, a female screw 52 is formed on the inner peripheral surface of the lens support 7, and a male screw that meshes with the female screw 52 of the lens support 7 is formed on the outer peripheral surface of the lens barrel 20 (not shown). Alternatively, the lens barrel 20 may be attached to the lens support 7 by screwing. In FIG. 7, the coil 15, the magnet 13, and the rear spring are omitted, and the frame 51 is disposed on the front side of the yoke 3, and the front spring 9 is sandwiched between the frame 51 and the yoke 3. .
レンズ支持体７は隣り合うコイル固定部１９、１９間を空間としたが、コイル固定部１９、１９間に壁を設け、全体として筒状に形成しても良い。 The lens support 7 has a space between adjacent coil fixing portions 19 and 19, but a wall may be provided between the coil fixing portions 19 and 19 so as to be formed in a cylindrical shape as a whole.
ヨーク３の外周壁３ａの形状（ヨークの外形）は、平面視矩形に限らず、５角形や６角形等であっても良く、その角部１４ごとにマグネット１３を配置し、レンズ支持体７の外周には角部１４に対応する位置にコイル固定部１９を設ける構成であってもよい。 The shape of the outer peripheral wall 3a of the yoke 3 (outer shape of the yoke) is not limited to a rectangular shape in plan view, and may be a pentagon, a hexagon, or the like. A magnet 13 is arranged for each corner 14 and the lens support 7 A configuration in which the coil fixing portion 19 is provided at a position corresponding to the corner portion 14 on the outer periphery may be employed.
レンズ支持体７の嵌合部２３が凸状でレンズバレル２０の被嵌合部２７が凹状であっても良い。 The fitting part 23 of the lens support 7 may be convex and the fitted part 27 of the lens barrel 20 may be concave.
１ レンズ駆動装置
３ ヨーク
３ａ 外周壁
３ｂ 内側壁
３ｃ 連結壁
５ ベース
７ レンズ支持体
９ 前側スプリング
１１ 後側スプリング
１４ 角部
１３ マグネット
１５ コイル
１９ コイル固定部
１９ｂ コイル内周受部
２３ 嵌合部
２７ 被嵌合部
DESCRIPTION OF SYMBOLS 1 Lens drive device 3 Yoke 3a Outer peripheral wall 3b Inner side wall 3c Connection wall 5 Base 7 Lens support body 9 Front side spring 11 Rear side spring 14 Corner | angular part 13 Magnet 15 Coil 19 Coil fixing part 19b Coil inner periphery receiving part 23 Fitting part 27 Mated part
Claims (6)
レンズ支持体は外周に複数のコイル固定部が設けてあり、各コイル固定部は半径方向外方に突設し且つ周方向端面がヨーク内側壁の周方向端面に対面して配置されていることを特徴とするレンズ駆動装置。 An annular yoke, a lens support having a coil fixed to the outer periphery, a plurality of magnets, a spring, and a base are provided, and the yoke is spaced circumferentially on the outer peripheral wall and the inner peripheral side of the outer peripheral wall. Each of the magnets is fixed to the inner peripheral surface of the yoke outer wall with a space between the inner wall and the yoke inner wall. Adjacent magnets are arranged at intervals in the circumferential direction, the lens support is arranged on the inner circumference side of the yoke, and the lens barrel is mounted on the inner circumference by rotation, and the coil is the inner wall of the yoke In some places, it is arranged between the inner wall and the magnet, and a spring is provided between the base or yoke and the lens support so that the lens support can be moved back and forth in the optical axis direction relative to the base. Supports and energizes the coil. A lens driving device for moving the lens support in the optical axis direction of the lens by an electromagnetic force generated,
The lens support is provided with a plurality of coil fixing portions on the outer periphery, and each coil fixing portion protrudes radially outward, and the circumferential end surface is disposed to face the circumferential end surface of the inner wall of the yoke. A lens driving device.
A camera-equipped mobile phone, comprising the camera according to claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008157484A JP5286606B2 (en) | 2008-06-17 | 2008-06-17 | Lens driving device, camera and camera-equipped mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008157484A JP5286606B2 (en) | 2008-06-17 | 2008-06-17 | Lens driving device, camera and camera-equipped mobile phone |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012274490A Division JP2013054390A (en) | 2012-12-17 | 2012-12-17 | Lens drive device, camera, and mobile phone with camera |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2009300902A JP2009300902A (en) | 2009-12-24 |
| JP2009300902A5 true JP2009300902A5 (en) | 2012-06-07 |
| JP5286606B2 JP5286606B2 (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2008157484A Active JP5286606B2 (en) | 2008-06-17 | 2008-06-17 | Lens driving device, camera and camera-equipped mobile phone |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5265422B2 (en) * | 2009-03-17 | 2013-08-14 | アルプス電気株式会社 | Lens drive device |
| JP5817413B2 (en) * | 2011-10-12 | 2015-11-18 | Tdk株式会社 | Lens drive device |
| JP2014174404A (en) * | 2013-03-11 | 2014-09-22 | Tdk Taiwan Corp | Lens holder |
| JP2022073558A (en) * | 2020-11-02 | 2022-05-17 | アルプスアルパイン株式会社 | Lens drive device and camera module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH08230584A (en) * | 1995-02-27 | 1996-09-10 | Mitsubishi Automob Eng Co Ltd | Structure and method for installing part to be mounted on trim member |
| JP3040546U (en) * | 1997-02-14 | 1997-08-26 | 空調技研工業株式会社 | Air outlet device |
| JP4682653B2 (en) * | 2005-03-14 | 2011-05-11 | ミツミ電機株式会社 | Autofocus actuator |
| JP4732853B2 (en) * | 2005-10-28 | 2011-07-27 | セイコーインスツル株式会社 | LENS DRIVE DEVICE AND ELECTRONIC DEVICE |
| JP4942187B2 (en) * | 2006-06-30 | 2012-05-30 | シコー株式会社 | Lens driving device, camera and camera-equipped mobile phone |
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