JPH0655138U - Camera blade opening and closing device - Google Patents

Camera blade opening and closing device

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Publication number
JPH0655138U
JPH0655138U JP9349392U JP9349392U JPH0655138U JP H0655138 U JPH0655138 U JP H0655138U JP 9349392 U JP9349392 U JP 9349392U JP 9349392 U JP9349392 U JP 9349392U JP H0655138 U JPH0655138 U JP H0655138U
Authority
JP
Japan
Prior art keywords
opening
blades
blade
diaphragm
camera
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
Application number
JP9349392U
Other languages
Japanese (ja)
Inventor
良三 深沢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nisca Corp
Original Assignee
Nisca Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nisca Corp filed Critical Nisca Corp
Priority to JP9349392U priority Critical patent/JPH0655138U/en
Publication of JPH0655138U publication Critical patent/JPH0655138U/en
Pending legal-status Critical Current

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Landscapes

  • Diaphragms For Cameras (AREA)
  • Shutters For Cameras (AREA)

Abstract

(57)【要約】 【目的】 本考案の目的は、カメラの羽根を駆動する駆
動モータ等の駆動部の配置や種類の選択に大きな自由度
を有するカメラの羽根開閉装置を得ること。 【構成】本考案は、露光のための開口部を有するガイド
部材と、このガイド部材に沿って相対的に逆方向へ移動
して前記開口部を開閉する一対の羽根とを備えたカメラ
の羽根開閉装置において、前記ガイド部材の前記開口部
の周囲に回動自在に支持されると共に、前記一対の羽根
に連結され、回動によって前記羽根を相対的に逆方向へ
移動させる環状部材と、前記ガイド部材の適宜位置に取
り付けられ、前記羽根を開閉駆動するための駆動手段
と、前記環状部材と前記駆動手段との間に介在され、前
記駆動手段の駆動力を前記環状部材に伝達して、前記環
状部材を回動させる連結手段とを設けた。
(57) [Summary] [Object] An object of the present invention is to provide a camera blade opening / closing device that has a great degree of freedom in selecting the arrangement and type of a drive unit such as a drive motor for driving the camera blade. According to the present invention, there is provided a camera blade having a guide member having an opening for exposure, and a pair of blades which move in the opposite direction along the guide member to open and close the opening. In the opening / closing device, an annular member that is rotatably supported around the opening of the guide member and that is connected to the pair of blades and that moves the blades in a relatively opposite direction by rotation, Installed at an appropriate position of the guide member, interposed between a driving means for opening and closing the blade and the annular member and the driving means, transmitting the driving force of the driving means to the annular member, A connecting means for rotating the annular member is provided.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、ビデオカメラなどの絞り羽根あるいはシャッタ羽根等、特に一対の 羽根を相対移動させて露光開口部を開閉するカメラの羽根開閉装置に関する。 The present invention relates to a blade opening / closing device for a camera, such as a diaphragm blade or a shutter blade of a video camera, and in particular, a pair of blades are relatively moved to open / close an exposure opening.

【0002】[0002]

【従来の技術】[Prior art]

従来のカメラの羽根開閉装置の例を図3、図4に示す。図のように従来の羽根 開閉装置Aは、露光のための開口部2を有するガイド板1と、このガイド板1に 沿って相対的に逆方向へ移動して開口部2を開閉する一対の羽根6,7と、これ らの羽根6,7を駆動する駆動モータ3とを備えている。 An example of a conventional blade opening / closing device for a camera is shown in FIGS. As shown in the figure, a conventional blade opening / closing device A includes a guide plate 1 having an opening 2 for exposure, and a pair of opening / closing openings 2 which are moved along the guide plate 1 in relatively opposite directions. The blades 6 and 7 and the drive motor 3 that drives these blades 6 and 7 are provided.

【0003】 そして、駆動モータ3の回転軸4には揺動レバー5が取り付けられている。こ の揺動レバー5の両端部はそれぞれ羽根6,7の基部に連結されている。A swing lever 5 is attached to the rotary shaft 4 of the drive motor 3. Both ends of the swing lever 5 are connected to the bases of the blades 6 and 7, respectively.

【0004】 このような従来の羽根開閉装置Aは、揺動レバー5の両端部がそれぞれ羽根6 ,7の基部と直接連結されているので、コンパクトに構成できるという利点があ る。The conventional blade opening / closing device A as described above has an advantage that it can be made compact because both ends of the swing lever 5 are directly connected to the bases of the blades 6 and 7, respectively.

【0005】[0005]

【考案が解決しようとする課題】[Problems to be solved by the device]

しかしながら上記のような利点の反面、従来の装置では駆動モータ3の配設位 置において自由度がなく、カメラ本体の部材配置などに制約を与えると言う問題 点があった。 However, in spite of the above advantages, the conventional device has a problem in that there is no degree of freedom in the arrangement position of the drive motor 3 and the member arrangement of the camera body is restricted.

【0006】 また、駆動モータ3と各羽根6,7との位置関係もほぼガイド板1の大きさに 制約されて自由度がなく、従って駆動モータ3の出力の選択に自由度が少なかっ た。Further, the positional relationship between the drive motor 3 and each of the blades 6 and 7 is also substantially limited by the size of the guide plate 1, and thus there is no degree of freedom. Therefore, there is little freedom in selecting the output of the drive motor 3.

【0007】 すなわち、揺動レバー5のレバー長さをL1、羽根6,7の摺動抵抗の大きさ をF1、駆動モータ3の出力トルクをTとすると、揺動角が小さいので近似的に 、 T=L1・F1 となるわけであるが、レバー長さL1に自由度が少なく、ある定まった範囲のも のであるとすると、出力トルクTもかわらず、よって駆動モータ3も自由に選択 できないこととなり、場合によっては不必要に大きな駆動モータ3の使用を余儀 なくされる可能性を有するものであった。That is, when the lever length of the rocking lever 5 is L 1 , the magnitude of the sliding resistance of the blades 6 and 7 is F 1 , and the output torque of the drive motor 3 is T, the rocking angle is small. Therefore, T = L 1 · F 1 , but if the lever length L 1 has a small degree of freedom and is within a certain range, the output torque T will be the same and the drive motor 3 However, there is a possibility that the use of an unnecessarily large drive motor 3 may be forced to be used in some cases.

【0008】 本考案は、このような従来の技術における問題点に着目して成されたもので、 カメラの羽根を駆動する駆動モータ等の駆動部の配置や種類の選択に大きな自由 度を有するカメラの羽根開閉装置を得ることを目的としている。The present invention has been made by paying attention to the problems in the conventional technique as described above, and has a large degree of freedom in selecting the arrangement and type of the drive unit such as the drive motor that drives the blades of the camera. The purpose is to obtain a blade opening / closing device for a camera.

【0009】[0009]

【課題を解決するための手段】[Means for Solving the Problems]

上記目的を達成するため本考案では、露光のための開口部を有するガイド部材 と、このガイド部材に沿って相対的に逆方向へ移動して前記開口部を開閉する一 対の羽根とを備えたカメラの羽根開閉装置において、前記ガイド部材の前記開口 部の周囲に回動自在に支持されると共に、前記一対の羽根に連結され、回動によ って前記羽根を相対的に逆方向へ移動させる環状部材と、前記ガイド部材の適宜 位置に取り付けられ、前記羽根を開閉駆動するための駆動手段と、前記環状部材 と前記駆動手段との間に介在され、前記駆動手段の駆動力を前記環状部材に伝達 して、前記環状部材を回動させる連結手段とを設けた。 In order to achieve the above object, the present invention comprises a guide member having an opening for exposure, and a pair of blades that move in opposite directions along the guide member to open and close the opening. In the camera blade opening / closing device, the blade is rotatably supported around the opening of the guide member, and is connected to the pair of blades. An annular member to be moved, a driving unit attached to an appropriate position of the guide member for opening and closing the blade, and an intervening member between the annular member and the driving unit to drive the driving force of the driving unit. A connecting means for rotating the annular member by transmitting the annular member is provided.

【0010】[0010]

【実施例】【Example】

以下、図面に基づき本考案の一実施例を、カメラの絞り装置を例として説明す る。 An embodiment of the present invention will be described below with reference to the drawings using a camera diaphragm device as an example.

【0011】 <構成> 本実施例のカメラの絞り装置は、図1及び図2に示すようにガイド部材を構成 する例えば地板20および押さえ板30と、これら地板20および押さえ板30 の間に摺動自在に介装された一対の羽根例えば絞り羽根11,15と、これらの 絞り羽根11,15を相対的に逆方向へ移動させるための環状部材、例えば開閉 リング40と、この開閉リング40を駆動して絞り羽根11,15を開閉させる 駆動手段例えば駆動モータ50と、開閉リング40と駆動モータ50との間に介 在され、駆動モータ50の駆動力を開閉リング40に伝達して、開閉リング40 を回動させる連結手段例えば揺動レバー52とを備えている。<Structure> As shown in FIGS. 1 and 2, the camera diaphragm device according to the present embodiment includes, for example, a base plate 20 and a pressing plate 30 that form a guide member, and slides between the base plate 20 and the pressing plate 30. A pair of movable blades, for example, diaphragm blades 11 and 15, and an annular member for moving the diaphragm blades 11 and 15 in relatively opposite directions, such as an opening / closing ring 40, and the opening / closing ring 40. Driving means for opening and closing the diaphragm blades 11 and 15 is interposed between a driving motor such as a driving motor 50 and the opening / closing ring 40 and the driving motor 50. The driving force of the driving motor 50 is transmitted to the opening / closing ring 40 to open / close the opening / closing ring 40. It is provided with a connecting means for rotating the ring 40, for example, a swing lever 52.

【0012】 地板20及び押さえ板30には露光のための開口部21,31が同心状に設け られている。The base plate 20 and the pressing plate 30 are provided with openings 21 and 31 for exposure in a concentric manner.

【0013】 地板20には開口部21と同心状の環状凸部23と環状リブ22とが形成され ており、開閉リング40が環状リブ22上に摺動抵抗少なく支持されている。The base plate 20 is formed with an annular projection 23 and an annular rib 22 which are concentric with the opening 21, and the opening / closing ring 40 is supported on the annular rib 22 with a small sliding resistance.

【0014】 なお、環状凸部23の外周壁23aは開閉リング40の円形開口41aと嵌合 するようになっている。The outer peripheral wall 23 a of the annular convex portion 23 is adapted to fit into the circular opening 41 a of the opening / closing ring 40.

【0015】 また地板20には図1のように後述の絞り羽根11のガイド穴13と係合して これを案内するガイドピン28および絞り羽根15のガイド穴17と係合してこ れを案内するガイドピン29が植設されている。Further, as shown in FIG. 1, the main plate 20 is engaged with a guide hole 13 of a diaphragm blade 11, which will be described later, and guides the guide hole 13 of the diaphragm blade 15. A guide pin 29 is installed.

【0016】 そして絞り羽根11を支持するリブ25,25と、絞り羽根15を支持するリ ブ26,26とが設けられている。Ribs 25, 25 that support the diaphragm blades 11 and ribs 26, 26 that support the diaphragm blades 15 are provided.

【0017】 更に、地板20には駆動モータ50をネジで取り付ける取り付け穴61,62 と、押さえ板30をネジで取り付ける取り付け穴63,64とが設けられている 。Further, the base plate 20 is provided with mounting holes 61 and 62 for mounting the drive motor 50 with screws, and mounting holes 63 and 64 for mounting the holding plate 30 with screws.

【0018】 なお、地板20がほぼ楕円形状をしているが、駆動モータ50の取り付け位置 や絞り装置自体のカメラ本体への取り付け方等によって、適宜の形状とすること ができる。Although the base plate 20 has a substantially elliptical shape, it may have an appropriate shape depending on the mounting position of the drive motor 50, the mounting method of the diaphragm device itself to the camera body, and the like.

【0019】 押さえ板30にも露光のための開口部31を有することは既に述べた通りであ るが、地板20とは適宜の隙間を隔てて対向しており、絞り羽根11を支持する リブ32,32と、絞り羽根15を支持するリブ33,33とが設けられている 。 また、押さえ板30には開閉リング40の後述する作用ピン43,44が回 動自在の円弧穴34,35と、地板20の取り付け穴63,64にネジで固定す るための取り付け穴36,37とが設けられている。As described above, the pressing plate 30 also has the opening 31 for exposure, but the rib that faces the base plate 20 with an appropriate gap and supports the diaphragm blades 11. 32, 32 and ribs 33, 33 for supporting the diaphragm blades 15 are provided. Further, the holding plate 30 has circular holes 34, 35 in which action pins 43, 44 of the opening / closing ring 40, which will be described later, are rotatable, and mounting holes 36, for fixing the mounting holes 63, 64 of the main plate 20 with screws. And 37 are provided.

【0020】 開閉リング40は地板20の環状凸部23の外周壁23aに緩やかに嵌合する 円形開口41aを有し、地板20の環状リブ22に支持されるリング部41と、 地板20から外方に突出するアーム部42とから成っている。このアーム部42 の先端部近傍には後述の駆動モータ50の揺動レバー52の係合ピン53と係合 する係合孔42aが穿設されている。なお、アーム部42は揺動レバー52と共 に連結手段を構成している。The opening / closing ring 40 has a circular opening 41 a that is loosely fitted to the outer peripheral wall 23 a of the annular convex portion 23 of the main plate 20, and the ring portion 41 supported by the annular rib 22 of the main plate 20 and the outer part of the main plate 20. It is composed of an arm portion 42 protruding toward one side. An engaging hole 42a that engages with an engaging pin 53 of a swing lever 52 of a drive motor 50, which will be described later, is formed near the tip of the arm portion 42. The arm 42 and the swing lever 52 constitute a connecting means.

【0021】 開閉リング40には絞り羽根11に係合する作用ピン43及び絞り羽根15に 係合する作用ピン44が植設されている。The opening / closing ring 40 is provided with an action pin 43 that engages with the aperture blade 11 and an action pin 44 that engages with the aperture blade 15.

【0022】 絞り羽根11は大きく抉られた絞り開口部11aを有しており、地板20のガ イドピン28に係合するガイド穴13と、開閉リング40の作用ピン43と係合 する係合孔12とが穿設されている。The diaphragm blade 11 has a diaphragm opening 11 a that is largely hollowed out, and has a guide hole 13 that engages with the guide pin 28 of the main plate 20 and an engagement hole that engages with the action pin 43 of the opening / closing ring 40. 12 and 12 are drilled.

【0023】 一方の絞り羽根15には絞り羽根11の絞り開口部11aと共同し、絞り装置 絞り度を規制する絞り開口部15aを有しており、地板20のガイドピン29に 係合するガイド穴17と、開閉リング40の作用ピン44と係合する係合孔16 とが穿設されている。One of the diaphragm blades 15 has a diaphragm opening portion 15a that cooperates with the diaphragm opening portion 11a of the diaphragm blade 11 and restricts the diaphragm degree of the diaphragm device, and a guide that engages with the guide pin 29 of the main plate 20. A hole 17 and an engagement hole 16 that engages with the action pin 44 of the opening / closing ring 40 are provided.

【0024】 駆動モータ50は対置された一対のボビンにそれぞれ導線を巻回したコイル体 の内部に磁石を回転自在に軸支し、磁石の回転角検出手段を内蔵して構成した周 知のものであって、前記磁石の回転軸の一方を外部に突出させ揺動出力軸51と したものである。The drive motor 50 is a known one in which a magnet is rotatably supported inside a coil body in which conductors are wound around a pair of opposed bobbins, and a rotation angle detecting means for the magnet is built in. In addition, one of the rotating shafts of the magnet is projected to the outside to form the swing output shaft 51.

【0025】 この揺動出力軸51には揺動レバー52が固結されており、その他端部には開 閉リング40のアーム部42の係合孔42aと係合する係合ピン53が植設され ている。A swing lever 52 is fixedly connected to the swing output shaft 51, and an engagement pin 53 that engages with an engagement hole 42 a of an arm portion 42 of the opening / closing ring 40 is planted at the other end. It is set up.

【0026】 なお駆動モータ50の揺動レバー52は図示外の付勢手段によって、入力信号 のないとき絞り羽根11,15が開口部を閉ざす方向に付勢されており、入光を 阻止している。The oscillating lever 52 of the drive motor 50 is urged by an urging means (not shown) in such a direction that the diaphragm blades 11 and 15 close the opening when there is no input signal, so that light is blocked. There is.

【0027】 <動作> 次に動作を説明する。<Operation> Next, the operation will be described.

【0028】 以上のように構成された絞り装置はカメラの撮影光学系に組み込まれ、撮影時 の光量制御に用いられる。すなわち、周知の測光装置により被写体輝度が測定さ れ、これに対応した値の電流が駆動モータ50に流れると揺動出力軸51が回動 し、揺動レバー52が前記電流によって決められる角度だけ振れる。The diaphragm device configured as described above is incorporated in a photographing optical system of a camera and used for controlling the light amount at the time of photographing. That is, the brightness of the subject is measured by a known photometric device, and when a current having a value corresponding to the brightness is applied to the drive motor 50, the swing output shaft 51 is rotated and the swing lever 52 is moved by an angle determined by the current. Shake.

【0029】 揺動レバー52の回動によって開閉リング40は地板20の環状リブ22に沿 って回動し、絞り羽根11,15を駆動する。The rotation of the swing lever 52 causes the opening / closing ring 40 to rotate along the annular rib 22 of the main plate 20, and drives the diaphragm blades 11 and 15.

【0030】 いま図2において、駆動モータ50の揺動出力軸51が反時計方向に回動した とすると、揺動レバー52と係合する開閉リング40のアーム部41も反時計方 向に回動し、作用ピン43は絞り羽根11の係合孔12と係合しているから図2 において絞り羽根11を下方へ移動させ、反対に作用ピン44は係合孔16と係 合して絞り羽根15を図2において上方へ移動させる。そして、絞り羽根11の 絞り開口部11aと絞り羽根15の絞り開口部15aとは互いに開口を狭めるよ うに近接する。In FIG. 2, assuming that the swing output shaft 51 of the drive motor 50 rotates counterclockwise, the arm portion 41 of the opening / closing ring 40 engaged with the swing lever 52 also rotates counterclockwise. 2, the action pin 43 is engaged with the engagement hole 12 of the aperture blade 11, so that the aperture blade 11 is moved downward in FIG. 2, while the action pin 44 is engaged with the engagement hole 16 to reduce the aperture. The blade 15 is moved upward in FIG. The diaphragm opening 11a of the diaphragm blade 11 and the diaphragm opening 15a of the diaphragm blade 15 are close to each other so as to narrow the opening.

【0031】 駆動モータ50の出力軸51が時計方向に回動すると、絞り羽根11,15は 互いに開く方向に移動し、絞りは大きく開口する。When the output shaft 51 of the drive motor 50 rotates in the clockwise direction, the diaphragm blades 11 and 15 move in the directions to open each other, and the diaphragm opens greatly.

【0032】 そこで図2において開閉リング40のリング部41の中心Oから同じくアーム 部42の係合孔42aに係合している係合ピン53までの長さをL、前記中心O から各絞り羽根11,15の係合孔12、16までの長さをそれぞれL2、開閉 リング40の係合孔42aにかかる回動力をF、絞り羽根11,15の係合孔1 2,16にかかる抵抗力をともにfとし、かつ簡単のためこれらが図示のように ほぼ一線上にあるとしたときの平衡を考えると、 L・Fcosθ=2L2・f となる。ただし付勢手段等はここでは考慮していない。Therefore, in FIG. 2, the length from the center O of the ring portion 41 of the opening / closing ring 40 to the engaging pin 53 which is also engaged with the engaging hole 42a of the arm portion 42 is L, and the length from the center O 2 to each diaphragm is reduced. The lengths of the blades 11 and 15 up to the engagement holes 12 and 16 are L 2 , the rotational force applied to the engagement hole 42a of the opening / closing ring 40 is F, and the rotation power applied to the engagement holes 12 and 16 of the diaphragm blades 11 and 15. Considering the equilibrium when the resistance forces are both f and, for simplicity, they are almost on the same line as shown in the figure, L · Fcos θ = 2L 2 · f. However, biasing means etc. are not considered here.

【0033】 上式において、L2、fが他の要件から決められてほぼ一定のものであるとす ると、式の左辺も一定値となり、LとFとは互いに反比例の関係となる。In the above equation, if L 2 and f are determined by other requirements and are substantially constant, the left side of the equation also has a constant value, and L and F are in inverse proportion to each other.

【0034】 すなわち、開閉リング40のアーム部42を長くすることによって、開閉リン グ40の回動のため力Fを小さくすることができ、駆動モータ50の出力も小さ くすることが可能となる。尤も一方では絞り羽根11,15のストロークが問題 となるから、前記アーム長さを任意に大きく決定することはできないわけである が、従来のように殆ど自由度のない状態から比べるとはるかに大きな自由度を有 し、小型の駆動モータを選択することが可能となる。That is, by lengthening the arm portion 42 of the opening / closing ring 40, the force F can be reduced due to the rotation of the opening / closing ring 40, and the output of the drive motor 50 can also be reduced. . On the other hand, on the other hand, the stroke of the diaphragm blades 11 and 15 poses a problem, so it is not possible to determine the arm length arbitrarily large, but it is much larger than in the conventional state where there is almost no degree of freedom. It has a degree of freedom and it is possible to select a small drive motor.

【0035】 また、駆動モータ50の取り付け位置も図2の関係位置に限定されず、絞り装 置とカメラ本体との取り合いを考慮して自在に変更が可能となる。The mounting position of the drive motor 50 is not limited to the relational position shown in FIG. 2, and can be freely changed in consideration of the connection between the diaphragm device and the camera body.

【0036】[0036]

【考案の効果】[Effect of device]

本考案に係るカメラの羽根開閉装置によれば、露光のための開口部を有するガ イド部材と、このガイド部材に沿って相対的に逆方向へ移動して前記開口部を開 閉する一対の羽根とを備えたカメラの羽根開閉装置において、前記ガイド部材の 前記開口部の周囲に回動自在に支持されると共に、前記一対の羽根に連結され、 回動によって前記羽根を相対的に逆方向へ移動させる環状部材と、前記ガイド部 材の適宜位置に取り付けられ、前記羽根を開閉駆動するための駆動手段と、前記 環状部材と前記駆動手段との間に介在され、前記駆動手段の駆動力を前記環状部 材に伝達して、前記環状部材を回動させる連結手段とを設けたので、カメラの羽 根を駆動する駆動部の配置に大きな自由度を有し、カメラ本体への取り付けにも 制約が少ない。また、連結手段を適宜に選択することにより、羽根の駆動力を小 さくすることが可能となり、小型の駆動手段を選択できて、省スペース、コスト 低減等に寄与するところ大である。 According to the blade opening and closing device for a camera of the present invention, a guide member having an opening for exposure, and a pair of guide members that move relatively in opposite directions along the guide member to open and close the opening. In a blade opening / closing device for a camera including blades, the blade is rotatably supported around the opening of the guide member, and is connected to the pair of blades. An annular member to be moved to an appropriate position of the guide member, a driving means for opening and closing the blade, and a driving force of the driving means interposed between the annular member and the driving means. Is connected to the annular member to rotate the annular member.Therefore, there is a great degree of freedom in the arrangement of the drive unit that drives the blades of the camera, and it is easy to attach to the camera body. There are few restrictions. Further, by appropriately selecting the connecting means, it is possible to reduce the driving force of the blades, and it is possible to select a small driving means, which contributes to space saving and cost reduction.

【図面の簡単な説明】[Brief description of drawings]

【図1】本考案を適用したカメラの絞り装置の分解斜視
図である。
FIG. 1 is an exploded perspective view of a diaphragm device of a camera to which the present invention is applied.

【図2】同じく動作説明図である。FIG. 2 is also an operation explanatory diagram.

【図3】従来の絞り装置の側面図である。FIG. 3 is a side view of a conventional diaphragm device.

【図4】図3の平面図である。FIG. 4 is a plan view of FIG.

【符号の説明】[Explanation of symbols]

11 絞り羽根(カメラの羽根) 13 ガイド穴 15 絞り羽根(カメラの羽根) 17 ガイド穴 20 地板(ガイド部材) 21 開口部 28 ガイドピン 28 ガイドピン 30 押さえ板(ガイド部材) 31 開口部 40 開閉リング(環状部材) 42 アーム部(連結手段) 50 駆動モータ(駆動手段) 51 揺動出力軸 52 揺動レバー(連結手段) 11 Aperture Blade (Camera Blade) 13 Guide Hole 15 Aperture Blade (Camera Blade) 17 Guide Hole 20 Main Plate (Guide Member) 21 Opening 28 Guide Pin 28 Guide Pin 30 Holding Plate (Guide Member) 31 Opening 40 Opening / Closing Ring (Annular member) 42 arm part (connecting means) 50 drive motor (driving means) 51 swing output shaft 52 swing lever (connecting means)

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 露光のための開口部を有するガイド部材
と、このガイド部材に沿って相対的に逆方向へ移動して
前記開口部を開閉する一対の羽根とを備えたカメラの羽
根開閉装置において、 前記ガイド部材の前記開口部の周囲に回動自在に支持さ
れると共に、前記一対の羽根に連結され、回動によって
前記羽根を相対的に逆方向へ移動させる環状部材と、 前記ガイド部材の適宜位置に取り付けられ、前記羽根を
開閉駆動するための駆動手段と、 前記環状部材と前記駆動手段との間に介在され、前記駆
動手段の駆動力を前記環状部材に伝達して、前記環状部
材を回動させる連結手段とを備えたことを特徴とするカ
メラの羽根開閉装置。
1. A blade opening / closing device for a camera, comprising: a guide member having an opening for exposure; and a pair of blades that move in opposite directions along the guide member to open and close the opening. An annular member that is rotatably supported around the opening of the guide member, is coupled to the pair of blades, and moves the blades in a relatively opposite direction by the rotation; A driving means that is mounted at an appropriate position for opening and closing the blade, and is interposed between the annular member and the driving means, and transmits the driving force of the driving means to the annular member, A blade opening and closing device for a camera, comprising: a connecting means for rotating a member.
JP9349392U 1992-12-28 1992-12-28 Camera blade opening and closing device Pending JPH0655138U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9349392U JPH0655138U (en) 1992-12-28 1992-12-28 Camera blade opening and closing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9349392U JPH0655138U (en) 1992-12-28 1992-12-28 Camera blade opening and closing device

Publications (1)

Publication Number Publication Date
JPH0655138U true JPH0655138U (en) 1994-07-26

Family

ID=14083876

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9349392U Pending JPH0655138U (en) 1992-12-28 1992-12-28 Camera blade opening and closing device

Country Status (1)

Country Link
JP (1) JPH0655138U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009115831A (en) * 2007-11-01 2009-05-28 Sony Corp Light amount adjuster, lens barrel and imaging apparatus
JP2010204693A (en) * 2010-06-21 2010-09-16 Sony Corp Light quantity adjusting device
JP4735997B2 (en) * 2008-12-18 2011-07-27 ソニー株式会社 Aperture device, lens barrel and imaging device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009115831A (en) * 2007-11-01 2009-05-28 Sony Corp Light amount adjuster, lens barrel and imaging apparatus
JP4573136B2 (en) * 2007-11-01 2010-11-04 ソニー株式会社 Light amount adjusting device, lens barrel and imaging device
JP4735997B2 (en) * 2008-12-18 2011-07-27 ソニー株式会社 Aperture device, lens barrel and imaging device
JP2010204693A (en) * 2010-06-21 2010-09-16 Sony Corp Light quantity adjusting device

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