JPH05134161A - Lens-barrel - Google Patents
Lens-barrelInfo
- Publication number
- JPH05134161A JPH05134161A JP32126091A JP32126091A JPH05134161A JP H05134161 A JPH05134161 A JP H05134161A JP 32126091 A JP32126091 A JP 32126091A JP 32126091 A JP32126091 A JP 32126091A JP H05134161 A JPH05134161 A JP H05134161A
- Authority
- JP
- Japan
- Prior art keywords
- optical axis
- barrel
- fixed
- flexible printed
- lens barrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Lens Barrels (AREA)
- Camera Bodies And Camera Details Or Accessories (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は駆動回路と電磁絞りユニ
ット等の相対的に移動する電気部品間を配線するフレキ
シブルプリント基板を有するレンズ鏡筒に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens barrel having a flexible printed circuit board for wiring between a moving circuit and an electric component such as an electromagnetic diaphragm unit which moves relatively.
【０００２】[0002]
【従来の技術】従来、固定部に設けられた電気部品と移
動鏡筒に設けられた絞りユニットとの電気的接続はフレ
キシブルプリント基板で行われ、このフレキシブルプリ
ント基板を光軸方向に折り返すことにより、移動鏡筒の
相対的移動によるフレキシブルプリント基板のたるみを
吸収し、安定した電気接続が行えるよう構成されてい
る。2. Description of the Related Art Conventionally, a flexible printed circuit board is used for electrical connection between an electric component provided on a fixed portion and a diaphragm unit provided on a movable lens barrel, and the flexible printed circuit board is folded back in the optical axis direction. The slack of the flexible printed board due to the relative movement of the movable lens barrel is absorbed, and stable electrical connection can be performed.
【０００３】また、固定部、または、移動鏡筒に支持部
材を設け、上記フレキシブルプリント基板を支持部材に
沿わせることにより、フレキシブルプリント基板と周囲
の部材との干渉を防止するよう構成されている。A support member is provided on the fixed portion or the movable lens barrel, and the flexible printed circuit board is arranged along the support member to prevent interference between the flexible printed circuit board and surrounding members. .
【０００４】[0004]
【発明が解決しようとしている課題】しかしながら上記
従来例では、１つの支持部材でフレキシブルプリント基
板を保持するよう構成されているため、移動鏡筒の移動
量が比較的大きいレンズ鏡筒では、フレキシブルプリン
ト基板の外側にカム筒等の移動部材が配設されている場
合、移動鏡筒の移動によるフレキシブルプリント基板の
たるみを吸収しきれず、そのたるみによって周辺部材に
干渉し、移動鏡筒の動きが悪くなったり、不快な音を生
ずる等の問題点があった。However, in the above-mentioned conventional example, since the flexible printed board is held by one supporting member, the flexible printing is performed in the lens barrel in which the moving amount of the moving barrel is relatively large. If a moving member such as a cam barrel is arranged outside the board, the slack of the flexible printed circuit board due to the movement of the moving barrel cannot be absorbed completely, and the slack interferes with the peripheral members, causing the movement of the moving barrel to be poor. There was a problem that it became uncomfortable and an unpleasant sound was generated.
【０００５】本発明は上記のような問題点を解消し移動
鏡筒の移動が円滑で不快音の生ずることのないレンズ鏡
筒を得ることを目的とする。An object of the present invention is to solve the above-mentioned problems and to obtain a lens barrel in which the movement of the movable barrel is smooth and no unpleasant noise is generated.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、固定部
の内側に回転または光軸方向へ移動可能に保持された駆
動筒と、この駆動筒の内側に配設され、該駆動筒に連動
して光軸方向に移動する光学レンズを保持した複数の移
動鏡筒と、この移動鏡筒のうちの１つに固定された電動
駆動の絞りユニットと、この絞りユニットに一端が電気
接続され、他端が前記固定部に支持されたフレキシブル
プリント基板と、前記絞りユニットの固定された移動鏡
筒に光軸と平行に設けられた第１の支持部材と、前記第
１の支持部にガイドされて光軸方向の前方または後方へ
導かれ途中で少なくとも１回以上折り返された前記フレ
キシブルプリント基板をガイドするように前記固定部材
に光軸と平行に固定された第２の支持部材ことを備えた
ことにより、移動部材の移動時におけるフレキシブルプ
リント基板と周辺部材との干渉を防止して移動部材の円
滑な移動を図り、不快音の発生を防止する。この結果、
相対的に移動する電気部品間の電気的接続を安定化する
ことができる。According to the present invention, a drive barrel held inside a fixed portion so as to be rotatable or movable in the direction of the optical axis, and disposed inside the drive barrel, the drive barrel A plurality of movable lens barrels holding optical lenses that move in the optical axis direction in conjunction with each other, an electrically driven diaphragm unit fixed to one of the movable lens barrels, and one end electrically connected to the diaphragm unit. , A flexible printed circuit board having the other end supported by the fixed portion, a first support member provided on the movable lens barrel of the diaphragm unit fixed in parallel to the optical axis, and a guide for the first support portion. A second support member fixed to the fixing member in parallel with the optical axis so as to guide the flexible printed circuit board that is guided forward or backward in the optical axis direction and folded back at least once in the middle. Move by To prevent interference with the flexible printed circuit board and the peripheral members achieving smooth movement of the moving member during movement of the timber, to prevent the occurrence of unpleasant noise. As a result,
It is possible to stabilize the electrical connection between the electric components that move relatively.
【０００７】[0007]
【実施例】図１は、本発明の実施例を示し、上半分が広
角側にズーミングされた状態図で、下半分が望遠側にズ
ーミングされた状態図である。同図において、１は固定
部である案内筒、２は案内筒１の内側に回転及び光軸方
向の移動可能に嵌合されたカム筒、３，４は第３群鏡
筒、第４群鏡筒であり、各鏡筒はそれぞれ上記案内筒１
に設けた直進溝１ａとカム筒２に設けたカム溝に係合す
る複数のコロを有している。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention, in which the upper half is a wide-angle side zoomed state and the lower half is a telephoto side zoomed state. In the figure, 1 is a guide tube which is a fixed part, 2 is a cam tube which is fitted inside the guide tube 1 so as to be rotatable and movable in the optical axis direction, 3 and 4 are a third group lens barrel, and a fourth group. It is a lens barrel, and each lens barrel is the guide tube 1 described above.
It has a plurality of rollers which engage with the rectilinear groove 1a provided on the cam groove and the cam groove provided on the cam barrel 2.
【０００８】５は第３群鏡筒３に固定されている公知の
絞りユニット、６は絞り駆動用モーター７及びフォーカ
ス調整用モーター８の制御を行う電気部品を示し、上記
案内筒１に固定されている。９は絞り駆動用モーター７
と電気部品６を電気的に配線するフレキシブルプリント
基板である。Reference numeral 5 denotes a known diaphragm unit fixed to the third group lens barrel 3, and 6 denotes electric parts for controlling the diaphragm driving motor 7 and the focus adjusting motor 8, which are fixed to the guide cylinder 1. ing. 9 is a diaphragm driving motor 7
And a flexible printed circuit board for electrically wiring the electric component 6.
【０００９】１０は先端を絞り駆動用モーター７の端子
７ａに半田付されたフレキシブルプリント基板９を後方
に導く第１の支持部材であり、上記第３群鏡筒３に図示
しないビスにより固定されている。ここで、フレキシブ
ルプリント基板９は光軸方向に第１の支持部材の先端へ
導かれて折り返され、第１の支持部材１０の先端のＣ字
状に曲げられた部分１０ａで挟持されている。Reference numeral 10 is a first support member for guiding the flexible printed circuit board 9 whose tip is soldered to the terminal 7a of the aperture driving motor 7 to the rear side, and is fixed to the third group lens barrel 3 by a screw (not shown). ing. Here, the flexible printed circuit board 9 is guided to the tip of the first support member in the optical axis direction and folded back, and is sandwiched by the C-shaped bent portion 10a of the tip of the first support member 10.
【００１０】１１は先端を第２群鏡筒１２に設けた溝１
２ａに圧入し、他端を案内筒１にビス１３により固定さ
れた第２の支持部材であり、上記円弧状に折り返された
フレキシブルプリント基板９はこの第２の支持部材１１
によって光軸方向後方に導かれ、後端９ａは電気部品６
に半田付されている。Reference numeral 11 denotes a groove 1 whose tip is provided in the second lens barrel 12.
2a is a second support member press-fitted into 2a and the other end is fixed to the guide cylinder 1 with a screw 13, and the flexible printed circuit board 9 folded back in the arc shape is the second support member 11a.
Is guided rearward in the optical axis direction, and the rear end 9a is connected to the electrical component 6
It is soldered to.
【００１１】１４はカメラ本体（図示せず）と固定され
る固定筒、１５は固定筒１の外周に回転及び光軸方向の
移動可能に嵌合された操作環、１６は案内筒１の外周に
光軸方向のみ移動可能に嵌合された第１群鏡筒を示す。Reference numeral 14 is a fixed barrel fixed to a camera body (not shown), 15 is an operating ring fitted to the outer periphery of the fixed barrel 1 so as to be rotatable and movable in the optical axis direction, and 16 is an outer periphery of the guide barrel 1. 2 shows the first group lens barrel fitted so as to be movable only in the optical axis direction.
【００１２】上記の構成により、操作環１５を光軸方向
に移動させると、この操作環１５の内周に設けた周溝１
５ａと第１群鏡筒１６の外周に設けた突出部１６ａが嵌
合していることにより、第１群鏡筒１６を光軸方向に移
動させる。With the above structure, when the operating ring 15 is moved in the optical axis direction, the circumferential groove 1 provided on the inner circumference of the operating ring 15 is moved.
5a and the protrusion 16a provided on the outer periphery of the first group lens barrel 16 are fitted together, so that the first group lens barrel 16 is moved in the optical axis direction.
【００１３】この第１群鏡筒１６にはカム溝１６ｂが設
けられ、カム筒２に固定されたコロ２ａが係合してい
る。また、このカム筒２にはカム溝２ｂが設けられ、第
２群鏡筒１２に固定されたピン１２ｂが係合している。
従って、上記のように、第１群鏡筒１６を光軸方向に移
動させることにより、カム筒２を回転させると共に光軸
方向に移動させ、このカム筒２の光軸方向移動により第
３群鏡筒３、第４群鏡筒４を光軸方向に移動させる。A cam groove 16b is provided in the first group lens barrel 16, and a roller 2a fixed to the cam barrel 2 is engaged with the cam groove 16b. A cam groove 2b is provided in the cam barrel 2, and a pin 12b fixed to the second group lens barrel 12 is engaged with the cam barrel 2b.
Therefore, as described above, by moving the first group lens barrel 16 in the optical axis direction, the cam barrel 2 is rotated and moved in the optical axis direction, and the movement of the cam barrel 2 in the optical axis direction causes the third group to move. The lens barrel 3 and the fourth group lens barrel 4 are moved in the optical axis direction.
【００１４】この時、第３群鏡筒３の光軸方向移動によ
り生ずるフレキシブルプリント基板９のたるみは、円弧
状に折返された部分９ｂが移動することによって吸収さ
れる。また、第１の支持部材１０によってフレキシブル
プリント基板９の内周方向の部材との干渉、及び入射光
との干渉が防止でき、第２の支持部材１１によって、フ
レキシブルプリント基板９の外周方向のカム筒２、第４
群鏡筒４等の移動部材との干渉を防止することができ
る。At this time, the slack of the flexible printed circuit board 9 caused by the movement of the third group lens barrel 3 in the optical axis direction is absorbed by the movement of the arc-shaped folded portion 9b. Further, the first supporting member 10 can prevent the interference with the member in the inner peripheral direction of the flexible printed circuit board 9 and the interference with the incident light, and the second supporting member 11 allows the cam in the outer peripheral direction of the flexible printed circuit board 9. Cylinder 2, fourth
It is possible to prevent interference with a moving member such as the group barrel 4.
【００１５】[0015]
【発明の効果】以上説明したように、本発明のよれば、
移動鏡筒の１つに固定された電動駆動の絞りユニットに
一端が電気接続されたフレキシブルプリント基板をガイ
ドするように一端を該移動鏡筒に固定され光軸と平行に
配設された第１の支持部材と、この第１の支持部材で光
軸方向の前方または後方へ導かれ途中で少なくとも１回
以上折り返された上記フレキシブルプリント基板をガイ
ドするように固定部材に固定され光軸と平行に配設され
た第２の支持部材とを備えた構成であるので、移動鏡筒
の移動時におけるフレキシブルプリント基板と周辺部材
との干渉を防止することができ、この結果、不快音の発
生もなく、相対的に移動する電気部品間の安定した電気
接続を可能にすることができるという効果がある。As described above, according to the present invention,
A first one having one end fixed to the movable lens barrel and arranged parallel to the optical axis so as to guide a flexible printed circuit board whose one end is electrically connected to an electrically driven diaphragm unit fixed to one of the movable lens barrels. Of the supporting member and the flexible printed circuit board that is guided forward or backward in the optical axis direction by the first supporting member and is folded back at least once in the middle, and is fixed to the fixing member in parallel with the optical axis. Since the second supporting member is provided, it is possible to prevent interference between the flexible printed circuit board and the peripheral members when the movable lens barrel is moved, and as a result, no unpleasant noise is generated. Therefore, there is an effect that a stable electric connection can be made between electric components that move relatively.
【図１】本発明を実施したレンズ鏡筒を示す構成図であ
り、上半分は広角側にズーミングされた状態を示し、下
半分は望遠側にズーミングされた状態を示す縦断面図。FIG. 1 is a configuration diagram showing a lens barrel embodying the present invention, in which an upper half shows a state of zooming to a wide-angle side, and a lower half shows a vertical cross-sectional view showing a state of zooming to a telephoto side.
５ 絞りユニット ９ フレキシブルプリント基板 １０ 第１の支持部材 １１ 第２の支持部材 １４ 固定筒 5 Drawing Unit 9 Flexible Printed Circuit Board 10 First Support Member 11 Second Support Member 14 Fixed Cylinder
Claims (1)
動可能に保持された駆動筒と、この駆動筒の内側に配設
され、該駆動筒に連動して光軸方向に移動する光学レン
ズを保持した複数の移動鏡筒と、この移動鏡筒のうちの
１つに固定された電動駆動の絞りユニットと、この絞り
ユニットに一端が電気接続され、他端が前記固定部に支
持されたフレキシブルプリント基板と、前記絞りユニッ
トの固定された移動鏡筒に光軸と平行に設けられた第１
の支持部材と、第１の支持部材にガイドされて光軸方向
の前方または後方へ導かれ途中で少なくとも１回以上折
り返された前記フレキシブルプリント基板をガイドする
ように前記固定部に光軸と平行に固定された第２の支持
部材とを備えたレンズ鏡筒。1. A drive barrel which is held inside a fixed portion so as to be rotatable or movable in the optical axis direction, and an optical unit which is disposed inside the drive barrel and moves in the optical axis direction in conjunction with the drive barrel. A plurality of movable lens barrels holding lenses, an electrically driven diaphragm unit fixed to one of the movable lens barrels, one end electrically connected to the diaphragm unit, and the other end supported by the fixed portion. A flexible printed circuit board, and a first movable lens barrel fixed to the diaphragm unit, the first movable lens barrel being provided in parallel with the optical axis.
Parallel to the optical axis so as to guide the supporting member and the flexible printed circuit board guided by the first supporting member to the front or rear in the optical axis direction and folded back at least once in the middle. And a second support member fixed to the lens barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32126091A JPH05134161A (en) | 1991-11-08 | 1991-11-08 | Lens-barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32126091A JPH05134161A (en) | 1991-11-08 | 1991-11-08 | Lens-barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05134161A true JPH05134161A (en) | 1993-05-28 |
Family
ID=18130594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32126091A Pending JPH05134161A (en) | 1991-11-08 | 1991-11-08 | Lens-barrel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05134161A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104808304A (en) * | 2014-01-24 | 2015-07-29 | 奥林巴斯映像株式会社 | Lens barrel |
| JP2019020494A (en) * | 2017-07-13 | 2019-02-07 | キヤノン株式会社 | Lens barrel and imaging apparatus |
| JP2019200359A (en) * | 2018-05-17 | 2019-11-21 | 日本電産サンキョー株式会社 | Optical unit with shake correction function and manufacturing method therefor |
-
1991
- 1991-11-08 JP JP32126091A patent/JPH05134161A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104808304A (en) * | 2014-01-24 | 2015-07-29 | 奥林巴斯映像株式会社 | Lens barrel |
| JP2019020494A (en) * | 2017-07-13 | 2019-02-07 | キヤノン株式会社 | Lens barrel and imaging apparatus |
| US11567287B2 (en) | 2017-07-13 | 2023-01-31 | Canon Kabushiki Kaisha | Lens barrel and imaging apparatus |
| JP2019200359A (en) * | 2018-05-17 | 2019-11-21 | 日本電産サンキョー株式会社 | Optical unit with shake correction function and manufacturing method therefor |
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