JPS628035Y2 - - Google Patents
Info
- Publication number
- JPS628035Y2 JPS628035Y2 JP4492480U JP4492480U JPS628035Y2 JP S628035 Y2 JPS628035 Y2 JP S628035Y2 JP 4492480 U JP4492480 U JP 4492480U JP 4492480 U JP4492480 U JP 4492480U JP S628035 Y2 JPS628035 Y2 JP S628035Y2
- Authority
- JP
- Japan
- Prior art keywords
- switch
- film
- frame
- lever
- release lever
- 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.)
- Expired
Links
- 238000004804 winding Methods 0.000 claims description 19
- KJFBVJALEQWJBS-XUXIUFHCSA-N maribavir Chemical compound CC(C)NC1=NC2=CC(Cl)=C(Cl)C=C2N1[C@H]1O[C@@H](CO)[C@H](O)[C@@H]1O KJFBVJALEQWJBS-XUXIUFHCSA-N 0.000 claims 1
- 230000007246 mechanism Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
Landscapes
- Details Of Cameras Including Film Mechanisms (AREA)
- Indication In Cameras, And Counting Of Exposures (AREA)
Description
【考案の詳細な説明】
本考案は、自動巻上げ機構が装備されるカメラ
のこま数計に関する。[Detailed Description of the Invention] The present invention relates to a frame counter for a camera equipped with an automatic winding mechanism.
最近のカメラではその操作性の面から自動化の
要請が高く、一般的な自動露出機構のみならず、
フイルムの巻上げ、巻取り操作を自動的に行な
う、いわゆる自動巻上げ機構を備えたタイプの機
種が開発されるようになり、これは高級機種にも
及んでいる。このような自動巻上げ機構として
は、モータドライブ、オートワインダ等と称され
てカメラ外部に装填するものや、カメラ内部に付
設される内蔵式のものがあり、またその巻上げ手
段としてマイクロモータが一般に用いられる。そ
して、この種の自動巻上げ機構は、シヤツタボタ
ンに連動するレリーズスイツチによつてモータを
間歇的に駆動しその回転により巻上げ軸を回動し
てフイルムを１こまづつ巻上げる一方、その巻上
げ枚数を表示するこま数ダイヤルをも１こまづつ
間歇回動させる構成となつている。 There is a strong demand for automation in recent cameras from the aspect of operability, and not only the general automatic exposure mechanism, but also
Models equipped with a so-called automatic winding mechanism that automatically winds and winds the film have been developed, and even high-end models are now being developed. There are two types of automatic winding mechanisms: motor drives, autowinders, etc. that are installed outside the camera, and built-in mechanisms that are attached inside the camera.A micromotor is generally used as the winding mechanism. It will be done. This type of automatic winding mechanism uses a release switch that is linked to the shutter button to drive the motor intermittently, which turns the winding shaft to wind the film one frame at a time, while also displaying the number of sheets to be wound. The frame number dial is also rotated intermittently one frame at a time.
ところで、上述した自動巻上げ機構には、フイ
ルム装填時においてフイルムを所定量、すなわち
最初の１枚目まで巻上げる機能も必要であり、こ
のために前述したこま送り用のレリーズスイツチ
とは別に、フイルム装填時における巻上げ用スイ
ツチが設けられる。そして、この種の巻上げ用ス
イツチを作動させる作動部として、前述した巻上
げ枚数表示用のこま数ダイヤルを利用することが
従来から行なわれている。すなわち、こま数ダイ
ヤルの外周部に、その巻上げ回動量に応じた円弧
状カムを一体に設け、この円弧状カムに前記スイ
ツチを係合させてモータを駆動させる。そして、
このモータがフイルムを巻上げるとともに、こま
数ダイヤルも回動され、スイツチが円弧状カムか
ら外れたとき、すなわちフイルムが最初の１枚目
まで巻上げられたときにモータの駆動が停止され
る。 By the way, the above-mentioned automatic winding mechanism also needs a function to wind the film by a predetermined amount, that is, up to the first sheet, when loading the film. A winding switch is provided during loading. Conventionally, the above-mentioned frame number dial for displaying the number of sheets to be wound has been used as an operating section for operating this type of winding switch. That is, an arc-shaped cam corresponding to the winding rotation amount is integrally provided on the outer circumference of the frame number dial, and the switch is engaged with this arc-shaped cam to drive the motor. and,
As this motor winds the film, the frame number dial is also rotated, and when the switch is removed from the arc-shaped cam, that is, when the film has been wound up to the first sheet, the drive of the motor is stopped.
したがつて、フイルムをカメラ内部に装填し、
裏蓋を閉じたときに前述したスイツチを動作さ
せ、円弧状カムのカム面の長さ分だけモータを駆
動すれば、フイルムを最初の１枚目まで自動的に
巻上げることができ、その構造が簡単であるにも
かかわらず、便利なものである。 Therefore, load the film inside the camera,
By operating the above-mentioned switch when the back cover is closed and driving the motor by the length of the cam surface of the arc-shaped cam, the film can be automatically wound up to the first sheet. Although it is simple, it is convenient.
しかしながら、上述したスイツチは一対の接点
片により構成され、さらにその先端部をこま数ダ
イヤル側の円弧状カムの回動軌跡上に常時臨むよ
うに圧接したものであるため、撮影が終了した後
裏蓋を開けることによりばねなどで復旧回動する
こま数ダイヤルの円弧状カムに衝突し、その回動
を阻止するばかりでなく、接点片側が破損してし
まうことがあり、動作上およびその信頼性の面か
ら問題である。そして、これを解消するためには
円弧状カムの形状あるいは接点片の形状を変更
し、衝突時に両者が逃げるような構造とする必要
があるが、このような構造では適切なスイツチ作
動を得ることが難しく、信頼性に欠けるものであ
る。 However, the above-mentioned switch is composed of a pair of contact pieces, and the tip of the switch is pressed so that it always faces the rotational trajectory of the arc-shaped cam on the side of the fraction dial, so it cannot be moved back after shooting is completed. Opening the lid will collide with the arc-shaped cam of the frame number dial, which rotates to recover due to a spring, etc., and not only will this rotation be blocked, but one side of the contact may be damaged, which may affect operation and reliability. This is a problem from this point of view. In order to solve this problem, it is necessary to change the shape of the arcuate cam or the shape of the contact piece to create a structure that allows both to escape in the event of a collision, but with such a structure, it is difficult to obtain an appropriate switch operation. is difficult and unreliable.
本考案はこのような点に鑑み、こま数ダイヤル
側に設けられる円弧状カムに係合するフイルム装
填時の巻上げ用スイツチを、カメラ本体の裏蓋の
開閉動作に伴なつて揺動させるという簡易な構成
によつて、撮影終了後またはフイルムの空操作時
に裏蓋を開けることによりスイツチを円弧状カム
から離間させることができ、これによりこま数ダ
イヤルの復旧回動動作が円滑に行なえるととも
に、スイツチの接点が円弧状カムにより損傷され
るといつた問題がなくなり、これにより適切なス
イツチ作動を得ることができるカメラのこま数計
を提供するものである。 In view of these points, the present invention has a simple structure in which the winding switch for film loading, which engages with an arcuate cam provided on the frame number dial side, is swung in conjunction with the opening and closing operations of the back cover of the camera body. With this structure, the switch can be moved away from the arcuate cam by opening the camera back after shooting or when the film is empty, and this allows for smooth recovery rotation of the frame number dial. To provide a camera frame counter that eliminates the problem of a switch contact being damaged by an arc-shaped cam and thereby enables proper switch operation.
以下、本考案を図面に示した実施例を用いて詳
細に説明する。 Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.
第１図および第２図は本考案に係るカメラのこ
ま数計の一実施例を示し、これらの図において、
符号１はフイルムの巻上げ枚数を表わす目盛が
「Ｓ」から「１」，「２」，「４」，……「36」まで付
されたこま数ダイヤル板、２はフイルム装填時に
おいてフイルムを最初の１枚目まで巻上げるに必
要な回動量に応じた円弧状カム３をその外周部に
有するスイツチ作動板で、これらはこま数ダイヤ
ル軸４上で互いに重合して枢支されている。そし
て、これらこま数ダイヤル板４とスイツチ作動板
２にはそれぞれ互いに向きを逆にして重ね合わさ
れる略三角形状の調整穴５，６が対向して穿設さ
れ（図中下側）、またこま数ダイヤル板１の両側
にはその周方向に延びた長溝７ａ，７ｂが穿設さ
れ、これら長溝７ａ，７ｂに嵌入した止めねじ８
ａ，８ｂによりスイツチ作動板２と一体的に組付
けられている。すなわち、これらこま数ダイヤル
板１とスイツチ作動板２とは、前記調整穴５，６
にドライバ等を差し込んで回動することによつ
て、その周方向に調整可能に構成され、これによ
り表示目盛に対する円弧状カム３の位置を可変可
能であり、両板材１，２は前記止めねじ８ａ，８
ｂによつてそれぞれの位置で一体化される。 1 and 2 show an embodiment of the camera frame counter according to the present invention, and in these figures,
Number 1 is a number dial plate with a scale indicating the number of rolls of film from "S" to "1", "2", "4", ... "36", and number 2 is the number of frames when loading the film. The switch actuating plate has an arcuate cam 3 on its outer periphery corresponding to the amount of rotation required to wind up to the first sheet. Approximately triangular adjustment holes 5 and 6 are formed in the frame number dial plate 4 and the switch operation plate 2 so as to face each other and are overlapped with each other in opposite directions (lower side in the figure). Long grooves 7a and 7b extending in the circumferential direction are bored on both sides of the number dial plate 1, and setscrews 8 are fitted into these long grooves 7a and 7b.
It is integrally assembled with the switch operating plate 2 by a and 8b. That is, these frame number dial plate 1 and switch operation plate 2 are connected to the adjustment holes 5 and 6.
By inserting a screwdriver or the like and rotating it, the structure can be adjusted in the circumferential direction, thereby making it possible to change the position of the arc-shaped cam 3 with respect to the display scale, and both plates 1 and 2 are connected to the set screw. 8a, 8
b at each position.
この場合、本実施例では、前記調整穴５，６を
台形状に形成しているが、これは三角形状でもよ
く、要するに、互いに向きを逆にして重ね合わさ
れる調整穴５，６の２辺がそれぞれ対向し、これ
によりドライバ等で相互に回動させることができ
ればよい。 In this case, in this embodiment, the adjustment holes 5 and 6 are formed in a trapezoidal shape, but they may also be triangular.In short, the two sides of the adjustment holes 5 and 6 overlapped with their directions reversed. It is only necessary that they be opposed to each other so that they can be mutually rotated using a screwdriver or the like.
なお、符号９はカメラ本体側に設けられる表示
窓、また１ａはこま数ダイヤル板１の外周部に形
成されたこま送り歯部、１ｂは目盛表示用の銘板
であり、さらに１０はこま数ダイヤル板１の復旧
用のばねである。 In addition, numeral 9 is a display window provided on the camera body side, 1a is a frame feed tooth portion formed on the outer periphery of the frame number dial plate 1, 1b is a name plate for displaying a scale, and 10 is a frame number dial. This is a spring for restoring plate 1.
１１は前記こま数ダイヤル板１のこま送り歯部
１ａに噛合する間欠歯１１ａを有するこま数駆動
ギヤで、支軸１２上に揺動自在に軸支された解除
レバー１３の一端側に設けられ、同じく解除レバ
ー１３上に軸支されたスプロケツト駆動ギヤ１４
およびアイドルギヤ１５を介してフイルム巻上げ
用モータ（図示せず）からの回転力が伝達され
る。この解除レバー１３の他端にはカメラ本体の
裏蓋（図示せず）に係合する係止片１３ａが設け
られ、閉蓋時には第１図中矢印Ａ方向に押圧力を
与えられた状態を維持し、これにより前記こま数
駆動ギヤ１１がこま数ダイヤル板１の外周部に臨
み、その間欠歯１１ａでこま数ダイヤル板１を１
こまづつ間歇回動させる。なお、１６はストツパ
で、解除レバー１３が開蓋時に反時計方向に回動
されたときの回動力を規制するためのもので、ま
た、解除レバー１３は支軸１２に巻回されたばね
１７で第１図中反時計方向に付勢されている。 Reference numeral 11 denotes a frame number drive gear having intermittent teeth 11a that mesh with the frame feed tooth portion 1a of the frame number dial plate 1, and is provided at one end side of the release lever 13 that is swingably supported on the support shaft 12. , a sprocket drive gear 14 also pivotally supported on the release lever 13.
The rotational force from a film winding motor (not shown) is transmitted via the idle gear 15. The other end of this release lever 13 is provided with a locking piece 13a that engages with the back cover (not shown) of the camera body, and when the cover is closed, a pressing force is applied in the direction of arrow A in FIG. As a result, the frequency driving gear 11 faces the outer periphery of the frequency dial plate 1, and the intermittent teeth 11a rotate the frequency dial plate 1 by 1.
Rotate intermittently one by one. In addition, 16 is a stopper, which is used to restrict the turning force when the release lever 13 is turned counterclockwise when the lid is opened. It is biased counterclockwise in FIG.
１８は前記解除レバー１３の一端側で支軸１９
上に軸支された略Ｌ字状の揺動レバーで、線状ば
ね２０により常時時計方向への付勢力が与えられ
ている。そして、この揺動レバー１８の一端は前
記解除レバー１３側に延長され、解除レバー１３
の一端部１３ｂに係合する係合部１８ａとなつて
いる。また、この揺動レバー１８の他端にはその
先端側から切欠されたＵ形溝１８ｂが形成されて
いる。 18 is a support shaft 19 on one end side of the release lever 13.
It is a substantially L-shaped swinging lever that is pivotally supported on the top, and is constantly biased clockwise by a linear spring 20. One end of this swinging lever 18 is extended toward the release lever 13 side, and the release lever 13
This is an engaging portion 18a that engages with one end portion 13b. Further, a U-shaped groove 18b is formed at the other end of the swing lever 18, which is cut out from the tip side thereof.
２１は前記円弧状カム３に係合してモータを駆
動するためのスイツチで、一対の接点片２１ａ，
２１ｂから構成され、支軸２２上に軸支された接
点レバー２３の一端部に設けられ、各接点片２１
ａ，２１ｂの先端部を前記スイツチ作動板２の外
周に臨むように延長させている。一方、接点レバ
ー２３の他端にはピン２４が突設され、このピン
２４が前記揺動レバー１８のＵ形溝１８ｂ内に係
入されている。したがつて、前記スイツチ２１は
前記揺動レバー１８の揺動、すなわち解除レバー
１３を介して伝達される裏蓋の開閉動作に伴ない
円弧状カム３に対して進退自在に構成されてい
る。これを詳述すると、裏蓋が閉じられていると
きは、スイツチ２１の先端が円弧状カム３に係合
するごとくスイツチ作動板２の外周側に圧接さ
れ、また開蓋時にはスイツチ２１は円弧状カム３
から離間する方向に移動する。（第４図参照）
なお、上述した解除レバー１３、揺動レバー１
８、接点レバー２３およびスイツチ２１は、第１
図から明らかなように、こま数ダイヤル板１およ
びスイツチ作動板２の外周部に沿つて配設されて
いる。また、第１図はフイルムを装填し、裏蓋を
閉じた直後の各部の状態を示し、このときにはス
イツチ２１はON状態とされる。 21 is a switch for engaging the arc-shaped cam 3 to drive the motor, and includes a pair of contact pieces 21a,
21b, provided at one end of the contact lever 23 supported on the support shaft 22, and each contact piece 21
The tip portions of a and 21b are extended so as to face the outer periphery of the switch operating plate 2. On the other hand, a pin 24 is provided protruding from the other end of the contact lever 23, and this pin 24 is engaged in the U-shaped groove 18b of the swing lever 18. Therefore, the switch 21 is configured to be able to move forward and backward relative to the arc-shaped cam 3 in response to the swinging of the swinging lever 18, that is, the opening and closing operation of the back cover transmitted via the release lever 13. To explain this in detail, when the back cover is closed, the tip of the switch 21 is pressed against the outer periphery of the switch actuating plate 2, as if engaging with the arc-shaped cam 3, and when the back cover is opened, the switch 21 is pressed against the outer circumference of the switch operating plate 2. cam 3
Move in the direction away from. (See Figure 4) In addition, the above-mentioned release lever 13 and swing lever 1
8, the contact lever 23 and the switch 21 are connected to the first
As is clear from the figure, they are arranged along the outer periphery of the frequency dial plate 1 and the switch actuation plate 2. Further, FIG. 1 shows the state of each part immediately after loading film and closing the back cover, and at this time the switch 21 is in the ON state.
次に、上述した構成のこま数計の動作を説明す
る。まず、カメラにフイルムを装填し、裏蓋を閉
じると、第１図に示すように、解除レバー１３の
係止片１３ａが矢印Ａ方向に押圧され、こま数駆
動ギヤ１１をこま数ダイヤル板１の外周に臨ませ
るとともに、揺動レバー１８を介して接点レバー
２３を時計方向に回動させる。そして、このとき
にスイツチ２１の先端部がスイツチ作動板２の円
弧状カム３に係合し、ON状態とされ、モータが
駆動されてフイルムが巻上げられると共に、その
回転がこま数駆動ギヤ１１に伝達され、その間欠
歯１１ａがこま送り歯部１ａに噛合することによ
りこま数ダイヤル板１およびスイツチ作動板２が
間歇回動される。この場合のモータの回転はスイ
ツチ２１がON状態、すなわち円弧状カム３に係
合しそのカム面を摺動している間続き、この係合
が外れたときに停止される。この状態を第３図に
示しており、このときにはフイルムは最初の１枚
目まで巻上げられ、表示窓９には目盛「１」が表
われ、またスイツチ２１はOFF状態となつてい
る。 Next, the operation of the frame counter having the above-described configuration will be explained. First, when a film is loaded into the camera and the back cover is closed, the locking piece 13a of the release lever 13 is pressed in the direction of arrow A, as shown in FIG. The contact lever 23 is rotated clockwise via the swing lever 18. At this time, the tip of the switch 21 engages with the arc-shaped cam 3 of the switch actuating plate 2, turning it on, driving the motor and winding the film, and the rotation is transferred to the frame number drive gear 11. As a result, the intermittent teeth 11a mesh with the frame feed teeth portion 1a, thereby causing the frame number dial plate 1 and the switch operating plate 2 to rotate intermittently. In this case, the motor continues to rotate while the switch 21 is in the ON state, that is, while it is engaged with the arcuate cam 3 and sliding on the cam surface, and is stopped when this engagement is released. This state is shown in FIG. 3. At this time, the film has been wound up to the first sheet, a scale "1" appears on the display window 9, and the switch 21 is in the OFF state.
そして、第３図に示す状態において、撮影が行
なわれ、シヤツタボタンに連動するレリーズスイ
ツチが作動することによりモータが駆動され、こ
れによりフイルムが１こまづつ間歇的に巻上げら
れると共に、こま数駆動ギヤ１１の間欠歯１１ａ
によりこま数ダイヤル板１が１こまづつ間歇回動
し、フイルム枚数を表示する。この場合、スイツ
チ作動板２の円弧状カム３もこま数ダイヤル板１
と共に図中時計方向に順次回動される。 Then, in the state shown in FIG. 3, photography is performed, and the motor is driven by operating the release switch linked to the shutter button, which intermittently winds the film one frame at a time. Intermittent tooth 11a
As a result, the frame number dial plate 1 rotates intermittently one frame at a time to display the number of films. In this case, the arc-shaped cam 3 of the switch actuation plate 2 is also connected to the frame number dial plate 1.
It is sequentially rotated clockwise in the figure.
そして、撮影終了後、フイルムをパトローネに
巻取り、裏蓋を開けてこれを取出すと、第４図に
示すように、解除レバー１３はばね１７の作用力
により図中反時計方向に回動し、こま数駆動ギヤ
１１をこま数ダイヤル板１から離間させた状態で
ストツパ１６により係止される。すると、この解
除レバー１３の一端部１３ｂに係合されていた揺
動レバー１８もこれに追随して、ばね２０の作用
力により時計方向に回動し、これにより接点レバ
ー２３を反時計方向に回動させ、スイツチ２１を
円弧状カム３から離間させる。そして、この状態
において、こま数ダイヤル板１およびスイツチ作
動板２が復旧ばね１０により初期位置まで復旧回
動する。したがつて、その軌跡上から退避してい
るスイツチ２１に円弧状カム３が衝突し、破損さ
れるといつた問題はなくなる。 After shooting, when the film is wound into a cartridge and the back cover is opened to take it out, the release lever 13 is rotated counterclockwise in the figure by the force of the spring 17, as shown in FIG. , the frequency drive gear 11 is locked by the stopper 16 in a state separated from the frequency dial plate 1. Then, the swing lever 18 that was engaged with the one end 13b of the release lever 13 also follows this and rotates clockwise due to the force of the spring 20, thereby causing the contact lever 23 to move counterclockwise. Rotate the switch 21 to separate it from the arcuate cam 3. In this state, the frequency dial plate 1 and the switch operating plate 2 are rotated back to their initial positions by the recovery spring 10. Therefore, the problem of the arc-shaped cam 3 colliding with the switch 21 which is retracted from its trajectory and being damaged is eliminated.
なお、第５図にモータの電源回路を例示してお
り、SW1は裏蓋の開閉動作に連動するスイツチ、
SW2は円弧状カム３に係合するスイツチ２１、
SW3はシヤツタボタンに連動するレリーズスイツ
チを示す。この場合、スイツチSW1はスイツチ
SW2が裏蓋の開閉により作動されることから必ず
しも必要ない。 Figure 5 shows an example of the motor power supply circuit, and SW 1 is a switch that is linked to the opening/closing operation of the camera back.
SW 2 is a switch 21 that engages with the arcuate cam 3;
SW 3 indicates a release switch that is linked to the shutter button. In this case, switch SW 1 is
This is not necessarily necessary as SW 2 is activated by opening and closing the camera back.
また、スイツチ２１と円弧状カム３との間のタ
イミングの調整は、こま数ダイヤル板１とスイツ
チ作動板２にあけられた調整穴５，６にドライバ
等を差し込んで一方の調整穴５の辺部を支点とし
て回動させ、他方の調整穴６の辺部を押圧すると
よい。このようにすれば、両板材１，２を周方向
に微調整することができ、これによりこま送りに
合つた的確なスイツチ作動が得られる。 Further, the timing between the switch 21 and the arc-shaped cam 3 can be adjusted by inserting a screwdriver or the like into the adjustment holes 5 and 6 made in the frequency dial plate 1 and the switch operation plate 2, and It is preferable to rotate the adjustment hole 6 using the adjustment hole 6 as a fulcrum and press the side of the other adjustment hole 6. In this way, both the plates 1 and 2 can be finely adjusted in the circumferential direction, thereby providing accurate switch operation suitable for frame-by-frame feeding.
なお、前述した実施例によれば、スイツチ作動
用の円弧状カム３を、そのタイミング調整のため
に、こま数ダイヤル板１とは別個に設けた場合に
ついて説明したが、本考案はこれに限定されず、
こま数ダイヤルの外周部に一体に設けた構造でも
よいことは勿論である。要するに、裏蓋の開動作
に伴なつてこま数ダイヤルが復旧回動する際その
円弧状カムに衝突しないようにスイツチを離間さ
せることができる構成であればよい。 In addition, according to the above-mentioned embodiment, a case was explained in which the arcuate cam 3 for operating the switch was provided separately from the frequency dial plate 1 in order to adjust its timing, but the present invention is not limited to this. not,
Of course, it is also possible to have a structure in which it is integrally provided on the outer periphery of the fraction dial. In short, any configuration is sufficient as long as the switch can be spaced apart so as not to collide with the arcuate cam when the frame number dial rotates to recover when the back cover is opened.
以上説明したように、本考案に係るカメラのこ
ま数計によれば、フイルム装填時の巻上げ用スイ
ツチを、開蓋時においてはこま数ダイヤル板側の
円弧状カムから離間させるようにしたので、こま
数ダイヤルの復旧回動動作に支障を与えず、これ
を円滑に行なわせることができるばかりでなく、
スイツチの接点の安全性も保障することができ、
これにより適切なスイツチ作動を期待することが
できる等、その実用上の効果は大である。 As explained above, according to the camera frame counter according to the present invention, the winding switch when loading the film is separated from the arc-shaped cam on the frame number dial plate side when the lid is opened. Not only can this be done smoothly without interfering with the restoration rotation operation of the frame number dial, but
The safety of the switch contacts can also be guaranteed,
This has great practical effects, such as ensuring proper switch operation.
図は本考案に係るカメラのこま数計の一実施例
を示し、第１図はフイルム装填時において裏蓋を
閉じた状態を示す概略構成図、第２図は一部を切
欠して示す側断面図、第３図はフイルム装填時の
巻上げ動作終了状態を示す説明図、第４図は裏蓋
を開けこま数計が復旧した状態を示す説明図、第
５図はフイルム巻上げ用モータの作動状況を説明
するための回路図である。
１……こま数ダイヤル板、１ａ……こま送り歯
部、３……円弧状カム、１０……復旧ばね、１１
……こま数駆動ギヤ、１１ａ……間欠歯、１３…
…解除レバー、１３ａ……係止片、１８……揺動
レバー、２１……スイツチ、２１ａ，２１ｂ……
接点片、２３……接点レバー。
The figures show an embodiment of a camera frame counter according to the present invention, Fig. 1 is a schematic configuration diagram showing a state in which the back cover is closed when loading film, and Fig. 2 is a partially cutaway side view. A sectional view, Figure 3 is an explanatory diagram showing the end of the winding operation when loading the film, Figure 4 is an explanatory diagram showing the state in which the camera back is opened and the frame counter has been restored, and Figure 5 is the operation of the film winding motor. FIG. 3 is a circuit diagram for explaining the situation. DESCRIPTION OF SYMBOLS 1...Frame number dial plate, 1a...Frame feed dog section, 3...Circular cam, 10...Recovery spring, 11
...Frame number drive gear, 11a...Intermittent tooth, 13...
...Release lever, 13a... Locking piece, 18... Rocking lever, 21... Switch, 21a, 21b...
Contact piece, 23...Contact lever.
Claims (1)
周にこま送り歯部とフイルム装填時における最初
の１枚目までの巻上げ回動量に応じた円弧状カム
を有するこま数ダイヤル板と、前記こま送り歯部
に噛合する間欠歯を有しフイルム自動巻上げ用モ
ータにより回転されるこま数駆動ギヤと、前記円
弧状カムに圧接する方向に付勢されてこれに係合
し前記モータを駆動するスイツチを備え、前記こ
ま数駆動ギヤはカメラ本体の裏蓋の開閉操作に伴
ない揺動回動する解除レバーに設けられ、かつ前
記スイツチはこの解除レバーの一端に係合する揺
動レバーにより前記円弧状カムに対し進退自在に
構成されており、開蓋時に前記解除レバーが回動
することにより揺動レバーを介して前記スイツチ
が円弧状カムから離間することを特徴とするカメ
ラのこま数計。 A frame number dial plate on which the number of films to be wound is displayed in the circumferential direction and has a frame feed dog portion on the outer periphery and an arcuate cam corresponding to the amount of winding rotation up to the first film when loading the film; and the frame feed dog portion. a frame drive gear rotated by the automatic film winding motor and having intermittent teeth meshing with the film automatic winding motor, and a switch that is biased in a direction to press against the arcuate cam and engages with it to drive the motor; The frequency drive gear is provided on a release lever that swings and rotates as the back cover of the camera body is opened and closed, and the switch is driven by a swinging lever that engages one end of the release lever into the arc-shaped cam. 1. A frame counter for a camera, characterized in that the switch is configured to move forward and backward with respect to the arcuate cam, and when the release lever rotates when the lid is opened, the switch is separated from the arcuate cam via a swinging lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4492480U JPS628035Y2 (en) | 1980-04-02 | 1980-04-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4492480U JPS628035Y2 (en) | 1980-04-02 | 1980-04-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56147432U JPS56147432U (en) | 1981-11-06 |
| JPS628035Y2 true JPS628035Y2 (en) | 1987-02-25 |
Family
ID=29640122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4492480U Expired JPS628035Y2 (en) | 1980-04-02 | 1980-04-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS628035Y2 (en) |
-
1980
- 1980-04-02 JP JP4492480U patent/JPS628035Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56147432U (en) | 1981-11-06 |
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