JP2003264382A - Fixing structure of flexible printed board - Google Patents
Fixing structure of flexible printed boardInfo
- Publication number
- JP2003264382A JP2003264382A JP2002065320A JP2002065320A JP2003264382A JP 2003264382 A JP2003264382 A JP 2003264382A JP 2002065320 A JP2002065320 A JP 2002065320A JP 2002065320 A JP2002065320 A JP 2002065320A JP 2003264382 A JP2003264382 A JP 2003264382A
- Authority
- JP
- Japan
- Prior art keywords
- flexible printed
- rotating member
- circuit board
- printed circuit
- winding
- 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.)
- Granted
Links
Landscapes
- Lens Barrels (AREA)
- Mounting Of Printed Circuit Boards And The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、フレキシブルプリ
ント基板の取付構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible printed board mounting structure.
【０００２】[0002]
【従来の技術】従来より、本体と、回転しながら本体等
に対して出没自在に駆動される回転部材（例えば、レン
ズ鏡筒）とを有するカメラ等の光学製品が知られてい
る。このような光学製品には、本体と回転部材とを電気
的に接続するフレキシブルプリント基板が設けられてい
る。フレキシブルプリント基板は、出没動作に対応でき
るように、つまりレンズ鏡筒であればレンズ鏡筒から本
体にかけて光軸に沿って取り付けられている。そして、
回転部材が繰り出されている状態から繰り込まれる際
に、フレキシブルプリント基板を、そのいずれかの箇所
で逆方向に曲げて撓ませたり、あるいは回転部材や本体
のいずれかの箇所に収納していた。2. Description of the Related Art Conventionally, an optical product such as a camera having a main body and a rotating member (for example, a lens barrel) which is driven to retractably move with respect to the main body while rotating is known. Such an optical product is provided with a flexible printed circuit board that electrically connects the main body and the rotating member. The flexible printed circuit board is attached along the optical axis so that it can be moved in and out, that is, in the case of a lens barrel, it extends from the lens barrel to the main body. And
The flexible printed circuit board was bent in the opposite direction at any position to bend when the rotating member was extended from the extended state, or was housed in the rotating member or the main body. .
【０００３】[0003]
【発明が解決しようとする課題】しかし、フレキシブル
プリント基板を撓ませる場合、本体や回転部材に撓ませ
るためのスペースが必要であったり、撓ませた部分のフ
レキシブルプリント基板に光が当たることによって予期
せぬ方向から光が走り、内面反射が生じ、画質が低下し
たりする問題点があった。また、フレキシブルプリント
基板を収納させる構造では、収納させるための機構を回
転部材内あるいは本体等に設ける必要があり、コストア
ップにつながるという問題点があった。However, when the flexible printed circuit board is bent, a space for bending the main body or the rotating member is necessary, or the flexible printed circuit board in the bent part is exposed to light, which is expected. There is a problem in that light travels from a direction that does not occur, internal reflection occurs, and image quality deteriorates. Further, in the structure for accommodating the flexible printed circuit board, it is necessary to provide a mechanism for accommodating the flexible printed circuit board in the rotating member or in the main body or the like, which causes a problem of cost increase.
【０００４】本発明の課題は、光学製品の回転部材に設
けられるフレキシブルプリント基板の取付構造に関し
て、回転部材の繰り込み時に、簡単な機構でコンパクト
に、しかも内面反射を防止しつつフレキシブルプリント
基板を収めることにある。An object of the present invention is to attach a flexible printed circuit board to a rotary member of an optical product by using a simple mechanism to compact the flexible printed circuit board while preventing the internal reflection when the rotary member is retracted. Especially.
【０００５】[0005]
【課題を解決するための手段】請求項１記載の発明は、
例えば図１及び図２に示すように、本体と、本体に取り
付けられ、かつ、所定方向に回転することによって回転
中心方向に前進し、逆方向に回転することによって回転
中心方向に後退する回転部材（レンズ保持鏡筒１０）と
を電気的に接続するためのフレキシブルプリント基板
（１）の取付構造において、前記回転部材の外周面に
は、周面に沿って凹状に形成され、前記フレキシブルプ
リント基板が巻付可能である巻付部（１４）が設けら
れ、前記フレキシブルプリント基板は、その一端が前記
巻付部に設けられた固定部（設置溝１５）に固定される
とともに、前記固定部から所定の位置まで前記巻付部に
ほぼ接した状態で巻き付き、前記所定の位置において前
記所定の位置から他端側に向かう先の部分（後方部１
ｂ）が前記回転中心方向に沿うようにゆるやかに曲げら
れ、前記回転部材の後退時には、その後退動作と前記逆
方向への回転に従って前記所定の位置が前記固定部から
離れるように前記巻付部に巻き付いていき、前記回転部
材の前進時には、その前進動作と前記所定方向への回転
に従って前記所定の位置が前記固定部に近づいていくよ
うに前記巻付部から本体に向かって伸びていき、前記回
転部材の前進及び後退の際の回転に伴う前記巻付部の移
動長さは、前記回転部材の前後への移動長さとほぼ等し
いことを特徴とするフレキシブルプリント基板の取付構
造である。The invention according to claim 1 is
For example, as shown in FIGS. 1 and 2, a main body and a rotary member attached to the main body, which advances in the direction of the rotation center by rotating in a predetermined direction and retracts in the direction of the rotation center by rotating in the opposite direction. In the mounting structure of the flexible printed circuit board (1) for electrically connecting (lens holding lens barrel 10), the outer peripheral surface of the rotating member is formed in a concave shape along the peripheral surface, and the flexible printed circuit board is formed. A winding part (14) capable of being wound is provided, and one end of the flexible printed circuit board is fixed to a fixing part (installation groove 15) provided in the winding part, and It winds up to a predetermined position in a state of being almost in contact with the winding part, and at a predetermined position, a portion (rear part 1) from the predetermined position toward the other end side.
b) is gently bent along the direction of the rotation center, and when the rotating member retreats, the winding portion is moved so that the predetermined position is separated from the fixed portion in accordance with the retreating operation and the rotation in the opposite direction. Around the winding member, at the time of advancing the rotating member, it extends toward the main body from the winding portion so that the predetermined position approaches the fixed portion in accordance with the forward movement and the rotation in the predetermined direction, In the flexible printed circuit board mounting structure, the moving length of the winding portion due to the rotation of the rotating member during forward and backward movement is substantially equal to the moving length of the rotating member in the front-rear direction.
【０００６】請求項１記載の発明によれば、フレキシブ
ルプリント基板の一端は回転部材の周面に沿って凹状に
形成された巻付部に設けられた固定部に固定されてい
る。そして、固定部から所定の位置までのフレキシブル
プリント基板が巻付部にほぼ接した状態で巻き付き、所
定の位置からフレキシブルプリント基板の他端側に向か
うフレキシブルプリント基板の先の部分が回転中心方向
に沿うようにフレキシブルプリント基板上の所定の位置
がゆるやかに曲げられている。回転部材の後退時には、
その回転に従って所定の位置が固定部から離れるように
フレキシブルプリント基板が巻付部に巻き付き、前進時
には、その回転に従って所定の位置が固定部に近づくよ
うにフレキシブルプリント基板が巻付部から本体に向か
って伸びていく。According to the first aspect of the present invention, one end of the flexible printed circuit board is fixed to the fixed portion provided on the winding portion formed in a concave shape along the peripheral surface of the rotating member. Then, the flexible printed circuit board from the fixed part to the predetermined position is wound in a state of being almost in contact with the winding part, and the tip portion of the flexible printed circuit board from the predetermined position to the other end side of the flexible printed circuit board is in the rotation center direction. A predetermined position on the flexible printed circuit board is gently bent so as to follow. When the rotating member retracts,
The flexible printed circuit board winds around the winding part so that the predetermined position moves away from the fixed part according to the rotation, and when moving forward, the flexible printed circuit board moves from the winding part toward the main body so that the predetermined position approaches the fixed part according to the rotation. Grows.
【０００７】つまり、回転部材の後退時には、余った長
さ分のフレキシブルプリント基板を巻付部に巻き付ける
ようにして収めることができるため、回転部材のみを用
いればよく、簡単な機構でフレキシブルプリント基板を
収めることができる。また、余った長さ分のフレキシブ
ルプリント基板は、回転部材に設けられた巻付部に収め
ることができるので、内面反射も防止できる。また、回
転部材の前進及び後退の際の回転に伴う巻付部の移動長
さは、回転部材の前後への移動長さとほぼ等しいため、
回転部材の移動長さに応じてフレキシブルプリント基板
の巻付部に巻き付く長さ及び巻付部から本体に向かって
伸びる長さが決まる。従って、フレキシブルプリント基
板に余分な撓みができず、コンパクトにフレキシブルプ
リント基板を収めることができる。In other words, when the rotating member is retracted, the flexible printed circuit board of the surplus length can be accommodated by winding it around the winding portion. Therefore, it is sufficient to use only the rotating member, and the flexible printed circuit board has a simple mechanism. Can be accommodated. Further, since the flexible printed circuit board for the extra length can be accommodated in the winding portion provided on the rotating member, the internal reflection can be prevented. In addition, since the moving length of the winding portion due to the rotation of the rotating member when moving forward and backward is substantially equal to the moving length of the rotating member in the front-rear direction,
The length of the flexible printed board wound around the winding portion and the length extending from the winding portion toward the main body are determined according to the moving length of the rotating member. Therefore, the flexible printed circuit board can be accommodated in a compact manner without excessive bending of the flexible printed circuit board.
【０００８】請求項２記載の発明は、請求項１記載のフ
レキシブルプリント基板の取付構造において、前記回転
部材の外側には、本体に固定されている固定部材（固定
筒３０）が設けられ、前記固定部材には、前記回転中心
方向に貫通する貫通孔または溝（挿通溝３３）が形成さ
れ、前記フレキシブルプリント基板の前記先の部分は、
前記貫通孔または溝に通されていることを特徴とする。According to a second aspect of the present invention, in the flexible printed board mounting structure according to the first aspect, a fixing member (fixed cylinder 30) fixed to the main body is provided outside the rotating member, and A through hole or a groove (insertion groove 33) penetrating in the rotation center direction is formed in the fixing member, and the tip portion of the flexible printed board is
It is characterized in that it is passed through the through hole or groove.
【０００９】請求項２記載の発明によれば、フレキシブ
ルプリント基板の他端側に向かう先の部分を、本体に固
定されている固定部材に形成された貫通孔または溝に通
して本体にガイドしているため、予期せぬ方向からの光
による内面反射も防止できる。According to the second aspect of the present invention, the end portion of the flexible printed circuit board facing the other end is guided through the through hole or groove formed in the fixing member fixed to the main body to the main body. Therefore, it is possible to prevent internal reflection due to light from an unexpected direction.
【００１０】[0010]
【発明の実施の形態】以下、図面を参照して、本発明に
係る実施の形態を説明する。図１は、本発明に係るフレ
キシブルプリント基板の取付構造を適用したカメラの撮
影レンズ１００を示す断面図であり、図２は、図１のレ
ンズ保持鏡筒１０を示す斜視図である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a taking lens 100 of a camera to which a flexible printed board mounting structure according to the present invention is applied, and FIG. 2 is a perspective view showing the lens holding barrel 10 of FIG.
【００１１】まず、撮影レンズ１００の構成を説明す
る。図１に示すように、撮影レンズ１００は、レンズ保
持鏡筒（回転部材）１０、ヘリコイド筒２０、固定筒
（固定部材）３０、回転筒４０とから構成される。これ
ら各部材は、全て略円筒状に形成されている。尚、符号
５０はカメラのフィルム面を表す。レンズ保持鏡筒１０
内部には、前群レンズ１１ａと後群レンズ１１ｂとが取
り付けられている。レンズ保持鏡筒１０と後群レンズ１
１ｂとの間には、バネ１１ｃ、１１ｃが掛けられ、後群
レンズ１１ｂと前群レンズ１１ａは、バネ１１ｃ、１１
ｃによって互いに離れる方向に付勢されている。また、
後群レンズ１１ｂにはコマ１２が取り付けられており、
これがレンズ保持鏡筒１０に設けられている第１長孔１
３を貫通し、後述のカム溝３２に臨んでいる。この第１
長孔１３は、光軸方向（回転中心方向）に沿って設けら
れており、このため、後群レンズ１１ｂの移動方向が光
軸方向に規制されている。First, the structure of the taking lens 100 will be described. As shown in FIG. 1, the taking lens 100 includes a lens holding barrel (rotating member) 10, a helicoid barrel 20, a fixed barrel (fixing member) 30, and a rotating barrel 40. All of these members are formed in a substantially cylindrical shape. The reference numeral 50 represents the film surface of the camera. Lens holding lens barrel 10
A front lens group 11a and a rear lens group 11b are mounted inside. Lens holding barrel 10 and rear lens group 1
Springs 11c and 11c are provided between the rear lens group 11b and the front lens group 11a, and springs 11c and 11c are provided between the rear lens group 11b and the front lens group 11a.
It is urged in the direction away from each other by c. Also,
A top 12 is attached to the rear lens group 11b,
This is the first elongated hole 1 provided in the lens holding barrel 10.
3 and penetrates into a cam groove 32 described later. This first
The long hole 13 is provided along the optical axis direction (rotation center direction), and therefore, the moving direction of the rear group lens 11b is restricted to the optical axis direction.
【００１２】レンズ保持鏡筒１０の外周面には、周面に
沿って凹状に形成され、フレキシブルプリント基板１が
巻付可能である巻付部１４が設けられている。この巻付
部１４には、図２に示すように、設置溝（固定部）１５
が設けられている。この設置溝１５に巻付部１４の周方
向に巻き付くことができるようにフレキシブルプリント
基板１の一端が固定されている。On the outer peripheral surface of the lens holding barrel 10, a winding portion 14 is provided which is formed in a concave shape along the peripheral surface and on which the flexible printed board 1 can be wound. As shown in FIG. 2, the winding portion 14 has an installation groove (fixing portion) 15
Is provided. One end of the flexible printed board 1 is fixed so that it can be wound around the installation groove 15 in the circumferential direction of the winding portion 14.
【００１３】設置溝１５から所定の位置までのフレキシ
ブルプリント基板１は巻付部１４にほぼ接した状態で巻
き付き、この所定の位置からフレキシブルプリント基板
１の他端側に向かうフレキシブルプリント基板１の後方
部（先の部分）１ｂが光軸方向に沿うように、フレキシ
ブルプリント基板１の所定の位置がゆるやかに曲げられ
て曲部１ａとなっている。ここで、フレキシブルプリン
ト基板１は可撓性を有する基板であるため、この特性を
利用し、後述する繰り出し／繰り込み（前進／後退）動
作に応じて曲部１ａがフレキシブルプリント基板１上の
その位置を変化させることができる程度にフレキシブル
プリント基板１はゆるやかに曲げられている。The flexible printed circuit board 1 from the installation groove 15 to a predetermined position is wound in a state of being substantially in contact with the winding portion 14, and the rear side of the flexible printed circuit board 1 from this predetermined position to the other end side of the flexible printed circuit board 1. A predetermined position of the flexible printed board 1 is gently bent to form a curved portion 1a so that the portion (the front portion) 1b extends along the optical axis direction. Here, since the flexible printed circuit board 1 is a substrate having flexibility, the curved portion 1a is located on the flexible printed circuit board 1 according to a feeding / retracting (advancing / retracting) operation described later by utilizing this characteristic. The flexible printed circuit board 1 is gently bent to such an extent that it can be changed.
【００１４】また、図１に示すように、ヘリコイド筒２
０はネジ２、２によってレンズ保持鏡筒１０に固定され
ており、その内周面には第１ヘリコイドネジ２１が設け
られている。また、ヘリコイド筒２０の外周面の後端部
には、ボス２２が設けられている。レンズ保持鏡筒１０
の外側でヘリコイド筒２０の内側において、固定筒３０
はカメラ本体に固定されている。固定筒３０の外周面に
は、ヘリコイド筒２０の第１ヘリコイドネジ２１と螺合
する第２ヘリコイドネジ３１が設けられている。また、
固定筒３０の内周面に沿って、光軸方向に対して所定の
角度をもって斜めに形成されたカム溝３２が設けられて
おり、これにレンズ保持鏡筒１０の第１長孔１３を通し
て後群レンズ１１ｂのコマ１２が嵌合している。さら
に、固定筒３０内部には、光軸方向に貫通する挿通溝
（貫通孔または溝）３３が設けられている。この挿通溝
３３にフレキシブルプリント基板１の後方部１ｂが通さ
れてカメラ本体にガイドされる。そして、フレキシブル
プリント基板１の他端側は、カメラ本体の図示しない回
路基板に電気的に接続される。Further, as shown in FIG. 1, the helicoid cylinder 2
0 is fixed to the lens holding barrel 10 with screws 2 and 2, and a first helicoid screw 21 is provided on the inner peripheral surface thereof. A boss 22 is provided at the rear end of the outer peripheral surface of the helicoid cylinder 20. Lens holding lens barrel 10
The outside of the helicoid cylinder 20 and the fixed cylinder 30
Is fixed to the camera body. A second helicoid screw 31 that is screwed into the first helicoid screw 21 of the helicoid cylinder 20 is provided on the outer peripheral surface of the fixed cylinder 30. Also,
A cam groove 32, which is formed obliquely at a predetermined angle with respect to the optical axis direction, is provided along the inner peripheral surface of the fixed barrel 30, and the cam groove 32 is formed through the first elongated hole 13 of the lens holding barrel 10. The top 12 of the group lens 11b is fitted. Further, inside the fixed cylinder 30, an insertion groove (through hole or groove) 33 penetrating in the optical axis direction is provided. The rear portion 1b of the flexible printed board 1 is passed through the insertion groove 33 and guided by the camera body. The other end of the flexible printed board 1 is electrically connected to a circuit board (not shown) of the camera body.
【００１５】ヘリコイド筒２０の外側には、回転筒４０
が回転可能な状態で設けられている。回転筒４０の内周
面には、第２長孔４１が光軸方向に沿って設けられてお
り、この第２長孔４１にヘリコイド筒２０の外周面に設
けられたボス２２が係合している。また、回転筒４０の
外周面の後端部には、カメラ本体の図示しない駆動回路
等に接続されるギア部４２が設けられている。回転筒４
０は、この駆動回路等からの信号によってギア部４２が
駆動されることにより回転する。On the outside of the helicoid cylinder 20, there is a rotary cylinder 40.
Is rotatably provided. A second elongated hole 41 is provided on the inner peripheral surface of the rotary cylinder 40 along the optical axis direction, and the boss 22 provided on the outer peripheral surface of the helicoid cylinder 20 engages with the second elongated hole 41. ing. A gear portion 42 connected to a drive circuit (not shown) of the camera body is provided at the rear end of the outer peripheral surface of the rotary cylinder 40. Rotating cylinder 4
0 rotates when the gear unit 42 is driven by a signal from the drive circuit or the like.
【００１６】次に、撮影レンズ１００の動作を説明す
る。まず、ヘリコイド筒２０及びレンズ保持鏡筒１０が
繰り込まれた状態で、カメラ本体の図示しない駆動回路
等によってギア部４２を介して回転筒４０を繰り出し方
向（所定方向）に回転させると、その内周面の第２長孔
４１も回転する。第２長孔４１はヘリコイド筒２０のボ
ス２２と係合し、ヘリコイド筒２０の第１ヘリコイドネ
ジ２１は固定筒３０の第２ヘリコイドネジ３１と螺合し
ていることから、ヘリコイド筒２０は、回転筒４０の回
転に従って回転するとともに、前進する。これにより、
ネジ２、２によってヘリコイド筒２０に固定されている
レンズ保持鏡筒１０も回転するとともに、ヘリコイド筒
２０に押されて前方へ繰り出される。ここで、図１中の
左側方向を前方、右側方向を後方とする。また、レンズ
保持鏡筒１０内部の後群レンズ１１ｂは、レンズ保持鏡
筒１０の前進に伴ってバネ１１ｃ、１１ｃによりコマ１
２を固定筒３０のカム溝３２の後方内面に押し付けつ
つ、カム溝３２を介して前群レンズ１１ａとの間隔を変
えながら前方に直進する。Next, the operation of the taking lens 100 will be described. First, in a state where the helicoid cylinder 20 and the lens holding barrel 10 are retracted, when the rotary cylinder 40 is rotated in the payout direction (predetermined direction) via the gear portion 42 by a drive circuit (not shown) of the camera body, The second elongated hole 41 on the inner peripheral surface also rotates. The second slot 41 is engaged with the boss 22 of the helicoid cylinder 20, and the first helicoid screw 21 of the helicoid cylinder 20 is screwed with the second helicoid screw 31 of the fixed cylinder 30. It rotates in accordance with the rotation of the rotary cylinder 40 and moves forward. This allows
The lens holding barrel 10 fixed to the helicoid cylinder 20 by the screws 2 and 2 also rotates, and is pushed by the helicoid cylinder 20 and is extended forward. Here, the left side direction in FIG. 1 is the front side, and the right side direction is the rear side. Further, the rear group lens 11b inside the lens holding barrel 10 is moved by the springs 11c and 11c as the lens holding barrel 10 moves forward.
2 is pressed against the rear inner surface of the cam groove 32 of the fixed barrel 30, and the vehicle moves straight forward while changing the distance from the front lens group 11a via the cam groove 32.
【００１７】このように、レンズ保持鏡筒１０の繰り出
し時には、図２において、レンズ保持鏡筒１０が繰り出
し方向（Ａ方向）に回転するため、巻付部１４に巻き付
いているフレキシブルプリント基板１は、曲部１ａが設
置溝１５に近づいていくように巻付部１４から光軸方向
に沿ってカメラ本体に向かって伸びていく。このとき、
曲部１ａは、レンズ保持鏡筒１０の繰り出しに伴って、
設置溝１５に近づき、図２中のＣ方向にフレキシブルプ
リント基板１上におけるその位置を回転とともに変化さ
せていく。As described above, when the lens holding barrel 10 is extended, the lens holding barrel 10 rotates in the extending direction (direction A) in FIG. 2, so that the flexible printed circuit board 1 wound around the winding portion 14 is The curved portion 1a extends from the winding portion 14 toward the camera body along the optical axis so that the curved portion 1a approaches the installation groove 15. At this time,
The curved portion 1a moves along with the extension of the lens holding barrel 10.
It approaches the installation groove 15, and its position on the flexible printed circuit board 1 is changed with rotation in the direction C in FIG.
【００１８】一方、ヘリコイド筒２０及びレンズ保持鏡
筒１０が繰り出された状態で、カメラ本体の図示しない
駆動回路等によって繰り出し方向とは逆の方向（繰り込
み方向）に回転筒４０を回転させると、上記繰り出し時
の動作とは逆の動作により、ヘリコイド筒２０及びレン
ズ保持鏡筒１０が後方へ繰り込まれる。このように、レ
ンズ保持鏡筒１０の繰り込み時には、図２において、レ
ンズ保持鏡筒１０が繰り込み方向（Ｂ方向）に回転する
ため、光軸方向に沿っているフレキシブルプリント基板
１は、曲部１ａが設置溝１５から離れるように巻付部１
４に巻き付いていく。このとき、曲部１ａは、レンズ保
持鏡筒１０の繰り込みに伴って、設置溝１５から離れ、
図２中のＤ方向にフレキシブルプリント基板１上におけ
るその位置を回転とともに変化させていく。On the other hand, when the helicoid cylinder 20 and the lens holding lens barrel 10 are extended, when the rotary cylinder 40 is rotated in a direction (retracting direction) opposite to the retracting direction by a drive circuit (not shown) of the camera body, The helicoid cylinder 20 and the lens holding barrel 10 are retracted rearward by the operation opposite to the operation at the time of extension. As described above, when the lens holding barrel 10 is retracted, the lens holding barrel 10 rotates in the retracting direction (direction B) in FIG. 2, so that the flexible printed circuit board 1 along the optical axis direction has the curved portion 1a. Wrapping part 1 so that is separated from installation groove 15
Wrap around 4. At this time, the curved portion 1a is separated from the installation groove 15 as the lens holding barrel 10 is retracted,
The position on the flexible printed circuit board 1 is changed with rotation in the D direction in FIG.
【００１９】ここで、フレキシブルプリント基板１を取
り付けたレンズ保持鏡筒１０の繰り出しあるいは繰り込
みの際の回転に伴う巻付部１４の移動長さは、レンズ保
持鏡筒１０の前後への移動長さと等しくなるように設定
されている。Here, the moving length of the wrapping portion 14 due to the rotation of the lens holding barrel 10 to which the flexible printed circuit board 1 is attached when the lens holding barrel 10 is extended or retracted is the same as the movement length of the lens holding barrel 10 back and forth. It is set to be equal.
【００２０】すなわち、繰り出し時では、巻付部１４の
Ａ方向への回転に伴って移動した長さ分だけレンズ保持
鏡筒１０が前方へ繰り出される。このとき、巻付部１４
に巻き付いている部分のフレキシブルプリント基板１
は、Ａ方向への回転に従って巻付部１４からカメラ本体
に向かって伸びていく。つまり、巻付部１４のＡ方向へ
の回転による移動長さにほぼ等しい長さのフレキシブル
プリント基板１が巻付部１４からカメラ本体に向かって
伸びていく。従って、巻付部１４からカメラ本体に向か
って伸びていくフレキシブルプリント基板１の長さは、
レンズ保持鏡筒１０が前方へ繰り出される長さとほぼ等
しい。That is, when the lens holding barrel 10 is extended, the lens holding barrel 10 is extended forward by an amount corresponding to the movement of the winding portion 14 in the direction A. At this time, the winding part 14
Flexible printed circuit board 1 around the part
Is extended from the winding portion 14 toward the camera body in accordance with the rotation in the A direction. That is, the flexible printed circuit board 1 having a length substantially equal to the moving length of the winding portion 14 due to the rotation in the direction A extends from the winding portion 14 toward the camera body. Therefore, the length of the flexible printed circuit board 1 extending from the winding portion 14 toward the camera body is
The length is about the same as the length of the lens holding barrel 10 that is extended forward.
【００２１】一方、繰り込み時では、巻付部１４のＢ方
向への回転に伴って移動した分だけレンズ保持鏡筒１０
が後方へ繰り込まれる。このとき、光軸方向に沿ってい
るフレキシブルプリント基板１は、Ｂ方向への回転に従
って巻付部１４に巻き付いていく。つまり、巻付部１４
のＢ方向への回転による移動長さにほぼ等しい長さのフ
レキシブルプリント基板１が巻付部１４に巻き付いてい
く。従って、巻付部１４に巻き付くフレキシブルプリン
ト基板１の長さは、レンズ保持鏡筒１０が後方へ繰り込
まれる長さとほぼ等しい。On the other hand, at the time of retraction, the lens holding barrel 10 is moved by the amount of movement associated with the rotation of the winding portion 14 in the B direction.
Is rolled backwards. At this time, the flexible printed circuit board 1 along the optical axis direction is wound around the winding portion 14 according to the rotation in the B direction. That is, the winding part 14
The flexible printed circuit board 1 having a length substantially equal to the moving length by the rotation in the B direction is wound around the winding portion 14. Therefore, the length of the flexible printed circuit board 1 wound around the winding portion 14 is substantially equal to the length in which the lens holding barrel 10 is retracted rearward.
【００２２】言い換えれば、繰り出し時では、レンズ保
持鏡筒１０が繰り出された長さ分だけ巻付部１４に巻き
付くフレキシブルプリント基板１の長さが減少し、その
減少分だけ後方部１ｂの長さが増加し、逆に、繰り込み
時では、レンズ保持鏡筒１０が繰り込まれた長さ分だけ
巻付部１４に巻き付くフレキシブルプリント基板１の長
さが増加し、その増加分だけ後方部１ｂの長さが減少す
る。In other words, at the time of extension, the length of the flexible printed circuit board 1 wound around the winding portion 14 is reduced by the length of extension of the lens holding barrel 10, and the length of the rear portion 1b is reduced by the reduced amount. On the contrary, when the lens holding barrel 10 is retracted, the length of the flexible printed circuit board 1 wound around the winding portion 14 is increased by the length of the retracted lens holding barrel 10, and the rear portion is increased by the increased amount. The length of 1b is reduced.
【００２３】以上のフレキシブルプリント基板１の取付
構造によれば、レンズ保持鏡筒１０の巻付部１４にフレ
キシブルプリント基板１の一端を、フレキシブルプリン
ト基板１が巻付部１４の周方向に巻き付くことができる
ように設置溝１５に固定する。設置溝１５から所定の位
置までのフレキシブルプリント基板１が巻付部１４にほ
ぼ接した状態で巻き付き、この所定の位置からフレキシ
ブルプリント基板１の他端側に向かう後方部１ｂが光軸
方向に沿うように、フレキシブルプリント基板１上の所
定の位置がゆるやかに曲げられて曲部１ａとなってい
る。According to the above-described mounting structure of the flexible printed circuit board 1, one end of the flexible printed circuit board 1 is wound around the winding part 14 of the lens holding barrel 10 and the flexible printed circuit board 1 is wound in the circumferential direction of the winding part 14. It is fixed in the installation groove 15 so that it can be removed. The flexible printed circuit board 1 from the installation groove 15 to a predetermined position is wound in a state of being substantially in contact with the winding part 14, and the rear part 1b extending from the predetermined position to the other end side of the flexible printed circuit board 1 is along the optical axis direction. As described above, the predetermined position on the flexible printed circuit board 1 is gently bent to form the curved portion 1a.
【００２４】そして、レンズ保持鏡筒１０の繰り込み時
には、曲部１ａが設置溝１５から離れるようにフレキシ
ブルプリント基板１が巻付部１４に巻き付き、繰り出し
時には、曲部１ａが設置溝１５に近づくようにフレキシ
ブルプリント基板１が巻付部１４からカメラ本体に向か
って伸びていく構造となっている。When the lens holding barrel 10 is retracted, the flexible printed circuit board 1 is wound around the winding portion 14 so that the curved portion 1a is separated from the installation groove 15, and when extended, the curved portion 1a is moved closer to the installation groove 15. The flexible printed circuit board 1 has a structure that extends from the winding portion 14 toward the camera body.
【００２５】すなわち、レンズ保持鏡筒１０の繰り込み
時には、余った長さ分のフレキシブルプリント基板１を
巻付部１４に巻き付けるようにして収めることができる
ため、レンズ保持鏡筒１０のみを用いればよく、簡単な
機構でフレキシブルプリント基板１を収めることができ
る。また、余った長さ分のフレキシブルプリント基板１
は、レンズ保持鏡筒１０に設けられた巻付部１４に収め
ることができるので、内面反射も防止できる。加えて、
フレキシブルプリント基板１の後方部１ｂは、固定筒３
０内部の挿通溝３３に通されてカメラ本体にガイドされ
ているため、予期せぬ方向からの光による内面反射も防
止することができる。That is, when the lens holding barrel 10 is retracted, the flexible printed circuit board 1 of the surplus length can be wound around the winding portion 14 and accommodated therein. Therefore, only the lens holding barrel 10 needs to be used. The flexible printed circuit board 1 can be housed with a simple mechanism. In addition, the flexible printed circuit board 1 for the extra length
Can be accommodated in the winding portion 14 provided in the lens holding barrel 10, so that internal reflection can also be prevented. in addition,
The rear portion 1b of the flexible printed circuit board 1 has a fixed tube 3
Since it is guided by the camera body through the insertion groove 33 inside 0, it is possible to prevent internal reflection due to light from an unexpected direction.
【００２６】また、レンズ保持鏡筒１０の繰り出し／繰
り込みの際の回転に伴う巻付部１４の移動長さとレンズ
保持鏡筒１０の前後への移動長さとが等しいため、レン
ズ保持鏡筒１０の移動長さに応じてフレキシブルプリン
ト基板１の巻付部１４に巻き付く長さあるいは巻付部１
４からカメラ本体に向かって伸びる長さが決まる。従っ
て、フレキシブルプリント基板１に余分な撓みができ
ず、コンパクトにフレキシブルプリント基板１を収める
ことができる。Further, since the moving length of the winding part 14 and the moving length of the lens holding barrel 10 in the front-rear direction due to the rotation of the lens holding barrel 10 at the time of feeding / retracting are the same, The length of winding around the winding portion 14 of the flexible printed board 1 or the winding portion 1 according to the moving length.
The length from 4 to the camera body is determined. Therefore, the flexible printed circuit board 1 can be accommodated compactly without excessive bending.
【００２７】本発明は、上記実施の形態に限定されるも
のではなく、種々の変形が可能である。上記実施の形態
では本発明を光学製品としてのカメラを用いたが、光学
製品に関しては回転部材を有するものであればよく、例
えば、望遠鏡などに本発明を用いてもよい。The present invention is not limited to the above embodiment, but various modifications can be made. Although the present invention uses a camera as an optical product in the above-described embodiments, any optical product may be used as long as it has a rotating member. For example, the present invention may be used for a telescope or the like.
【００２８】[0028]
【発明の効果】請求項１記載の発明によれば、フレキシ
ブルプリント基板の一端は回転部材の周面に沿って凹状
に形成された巻付部に設けられた固定部に固定されてい
る。そして、固定部から所定の位置までのフレキシブル
プリント基板が巻付部にほぼ接した状態で巻き付き、所
定の位置からフレキシブルプリント基板の他端側に向か
うフレキシブルプリント基板の先の部分が回転中心方向
に沿うようにフレキシブルプリント基板上の所定の位置
がゆるやかに曲げられている。回転部材の後退時には、
その回転に従って所定の位置が固定部から離れるように
フレキシブルプリント基板が巻付部に巻き付き、前進時
には、その回転に従って所定の位置が固定部に近づくよ
うにフレキシブルプリント基板が巻付部から本体に向か
って伸びていく。According to the first aspect of the present invention, one end of the flexible printed circuit board is fixed to the fixing portion provided on the winding portion formed in a concave shape along the peripheral surface of the rotating member. Then, the flexible printed circuit board from the fixed part to the predetermined position is wound in a state of being almost in contact with the winding part, and the tip portion of the flexible printed circuit board from the predetermined position to the other end side of the flexible printed circuit board is in the rotation center direction. A predetermined position on the flexible printed circuit board is gently bent so as to follow. When the rotating member retracts,
The flexible printed circuit board winds around the winding part so that the predetermined position moves away from the fixed part according to the rotation, and when moving forward, the flexible printed circuit board moves from the winding part toward the main body so that the predetermined position approaches the fixed part according to the rotation. Grows.
【００２９】つまり、回転部材の後退時には、余った長
さ分のフレキシブルプリント基板を巻付部に巻き付ける
ようにして収めることができるため、回転部材のみを用
いればよく、簡単な機構でフレキシブルプリント基板を
収めることができる。また、余った長さ分のフレキシブ
ルプリント基板は、回転部材に設けられた巻付部に収め
ることができるので、内面反射も防止できる。また、回
転部材の前進及び後退の際の回転に伴う巻付部の移動長
さは、回転部材の前後への移動長さとほぼ等しいため、
回転部材の移動長さに応じてフレキシブルプリント基板
の巻付部に巻き付く長さ及び巻付部から本体に向かって
伸びる長さが決まる。従って、フレキシブルプリント基
板に余分な撓みができず、コンパクトにフレキシブルプ
リント基板を収めることができる。In other words, when the rotating member is retracted, the flexible printed circuit board of the surplus length can be accommodated by winding it around the winding portion. Therefore, it is sufficient to use only the rotating member, and the flexible printed circuit board has a simple mechanism. Can be accommodated. Further, since the flexible printed circuit board for the extra length can be accommodated in the winding portion provided on the rotating member, the internal reflection can be prevented. In addition, since the moving length of the winding portion due to the rotation of the rotating member when moving forward and backward is substantially equal to the moving length of the rotating member in the front-rear direction,
The length of the flexible printed board wound around the winding portion and the length extending from the winding portion toward the main body are determined according to the moving length of the rotating member. Therefore, the flexible printed circuit board can be accommodated in a compact manner without excessive bending of the flexible printed circuit board.
【００３０】請求項２記載の発明によれば、フレキシブ
ルプリント基板の他端側に向かう先の部分を、本体に固
定されている固定部材に形成された貫通孔に通して本体
にガイドしているため、予期せぬ方向からの光による内
面反射も防止できる。According to the second aspect of the present invention, the portion of the flexible printed circuit board facing the other end is guided through the through hole formed in the fixing member fixed to the main body to the main body. Therefore, it is possible to prevent internal reflection due to light from an unexpected direction.
【図１】本発明に係るフレキシブルプリント基板の取付
構造を適用したカメラの撮影レンズを示す断面図であ
る。FIG. 1 is a cross-sectional view showing a taking lens of a camera to which a flexible printed board mounting structure according to the present invention is applied.
【図２】図１のレンズ保持鏡筒を示す斜視図である。FIG. 2 is a perspective view showing a lens holding barrel of FIG.
１ フレキシブルプリント基板 １ａ 折曲部 １ｂ 後方部（先の部分） ２、２ ネジ １０ レンズ保持鏡筒（回転部材） １１ａ 前群レンズ １１ｂ 後群レンズ １１ｃ、１１ｃ バネ １２ コマ １３ 第１長孔 １４ 巻付部 １５ 設置溝（固定部） ２０ ヘリコイド筒 ２１ 第１ヘリコイドネジ ２２ ボス ３０ 固定筒（固定部材） ３１ 第２ヘリコイドネジ ３２ カム溝 ３３ 挿通溝（貫通孔） ４０ 回転筒 ４１ 第２長孔 ４２ ギア部 ５０ フィルム面 １００ 撮影レンズ 1 Flexible printed circuit board 1a Bent section 1b Rear part (front part) Two and two screws 10 Lens holding barrel (rotating member) 11a front lens group 11b rear lens group 11c, 11c spring 12 frames 13 First long hole 14 winding section 15 Installation groove (fixed part) 20 helicoid tube 21 1st helicoid screw 22 Boss 30 Fixed cylinder (fixing member) 31 Second Helicoid Screw 32 cam groove 33 Insertion groove (through hole) 40 rotating cylinder 41 Second long hole 42 Gear 50 film side 100 shooting lens
Claims (2)
方向に回転することによって回転中心方向に前進し、逆
方向に回転することによって回転中心方向に後退する回
転部材とを電気的に接続するためのフレキシブルプリン
ト基板の取付構造において、 前記回転部材の外周面には、周面に沿って凹状に形成さ
れ、前記フレキシブルプリント基板が巻付可能である巻
付部が設けられ、 前記フレキシブルプリント基板は、その一端が前記巻付
部に設けられた固定部に固定されるとともに、前記固定
部から所定の位置まで前記巻付部にほぼ接した状態で巻
き付き、前記所定の位置において前記所定の位置から他
端側に向かう先の部分が前記回転中心方向に沿うように
ゆるやかに曲げられ、前記回転部材の後退時には、その
後退動作と前記逆方向への回転に従って前記所定の位置
が前記固定部から離れるように前記巻付部に巻き付いて
いき、前記回転部材の前進時には、その前進動作と前記
所定方向への回転に従って前記所定の位置が前記固定部
に近づいていくように前記巻付部から本体に向かって伸
びていき、 前記回転部材の前進及び後退の際の回転に伴う前記巻付
部の移動長さは、前記回転部材の前後への移動長さとほ
ぼ等しいことを特徴とするフレキシブルプリント基板の
取付構造。1. An electrical connection between a main body and a rotary member attached to the main body, which advances in the direction of the rotation center by rotating in a predetermined direction and retracts in the direction of the rotation center by rotating in the opposite direction. In the mounting structure of the flexible printed circuit board for winding, the outer peripheral surface of the rotating member is provided with a winding portion that is formed in a concave shape along the peripheral surface and on which the flexible printed circuit board can be wound. One end of the substrate is fixed to a fixing portion provided on the winding portion, and the substrate is wound in a state of being substantially in contact with the winding portion from the fixing portion to a predetermined position and the predetermined position is set at the predetermined position. The part from the position toward the other end is gently bent so as to follow the direction of the rotation center, and when the rotating member retreats, the retreating operation is performed in the opposite direction. According to the rotation, the predetermined position is wound around the winding part so as to be separated from the fixed part, and when the rotating member is moved forward, the predetermined position is fixed to the fixed part according to the forward movement and the rotation in the predetermined direction. As it approaches, it extends toward the main body from the wrapping portion, and the moving length of the wrapping portion due to the rotation when the rotating member moves forward and backward is the moving length of the rotating member in the front-rear direction. The flexible printed circuit board mounting structure is characterized in that it is substantially equal to.
ている固定部材が設けられ、前記固定部材には、前記回
転中心方向に貫通する貫通孔または溝が形成され、前記
フレキシブルプリント基板の前記先の部分は、前記貫通
孔または溝に通されていることを特徴とする請求項１記
載のフレキシブルプリント基板の取付構造。2. A fixing member fixed to the main body is provided outside the rotating member, and a through hole or a groove penetrating in the direction of the rotation center is formed in the fixing member. 2. The mounting structure for a flexible printed circuit board according to claim 1, wherein the tip portion of said is passed through said through hole or groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002065320A JP4050533B2 (en) | 2002-03-11 | 2002-03-11 | Flexible printed circuit board mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002065320A JP4050533B2 (en) | 2002-03-11 | 2002-03-11 | Flexible printed circuit board mounting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003264382A true JP2003264382A (en) | 2003-09-19 |
| JP4050533B2 JP4050533B2 (en) | 2008-02-20 |
Family
ID=29197682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002065320A Expired - Fee Related JP4050533B2 (en) | 2002-03-11 | 2002-03-11 | Flexible printed circuit board mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4050533B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008046438A (en) * | 2006-08-18 | 2008-02-28 | Pentax Corp | Lens barrel |
| JP2015143739A (en) * | 2014-01-31 | 2015-08-06 | コニカミノルタ株式会社 | lens barrel |
-
2002
- 2002-03-11 JP JP2002065320A patent/JP4050533B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008046438A (en) * | 2006-08-18 | 2008-02-28 | Pentax Corp | Lens barrel |
| JP2015143739A (en) * | 2014-01-31 | 2015-08-06 | コニカミノルタ株式会社 | lens barrel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4050533B2 (en) | 2008-02-20 |
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