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    • 5. 发明授权
    • Photographic camera having electromagnetic operation control
    • 照相机具有电磁操作控制
    • US4129877A
    • 1978-12-12
    • US710889
    • 1976-08-02
    • Masayoshi YamamichiYukio IuraNobuo TezukaSatoshi WatanabeMasanori UchidoiHiroshi Aizawa
    • Masayoshi YamamichiYukio IuraNobuo TezukaSatoshi WatanabeMasanori UchidoiHiroshi Aizawa
    • G03B7/085G03B7/081G03B9/02G03B9/07G03B9/06
    • G03B7/081
    • A camera having an automatic diaphragm control range where the exposure value derived from an exposure control circuit is introduced to a diaphragm mechanism through a scanning mechanism. The termination of scanning operation is electromagnetically effected by an arresting device comprising an electromagnet, an arresting lever carrying an armature, a first spring connected to the arresting lever to urge the armature for movement toward the electromagnet, a driving lever pivotal about a common shaft of the arresting lever and arranged to cooperate with a cocking and release member, a second spring connected to the driving lever and having a stronger force than the first spring by a magnitude necessary to permit the arresting operation of the arresting lever against the first spring, and a transmitting pin mounted on the arresting lever and extending into the range of movement of the driving lever at a point where the driving lever in the cocked position is spaced apart from the pin by a distance large enough to insure that the armature is brought into intimate contact with the electromagnet yoke under the same conditions each time the scanning mechanism is reset as the camera is cocked. The transmitting pin also serves as a position-adjusting means in order to insure that the time interval between the deenergization of the electromagnet and the initiation of arresting operation of the arresting lever by the driving lever is minimized and made uniform from camera to camera to improve the accuracy of diaphragm control.
    • 具有自动光圈控制范围的相机,其中从曝光控制电路得到的曝光值通过扫描机构引入到光阑机构。 扫描操作的终止是由包括电磁体,承载电枢的止动杆的止动装置,连接到止动杆的第一弹簧推动电枢朝向电磁体移动的止动装置进行的电磁作用的驱动杆, 所述止动杆并且布置成与升降释放构件配合,第二弹簧连接到所述驱动杆并且具有比所述第一弹簧更强的力,所述力比所述必要量允许所述止动杆抵靠所述第一弹簧的止动操作;以及 安装在所述止动杆上的传动销延伸到所述驱动杆的运动范围内,所述驱动杆在所述被锁定位置处的所述驱动杆与所述销间隔开距离足够大以确保所述电枢被牢固地 每次扫描机构复位为c时,在相同条件下与电磁轭接触 amera被压倒了 传动销还用作位置调节装置,以确保电磁铁的断电与驱动杆的止动杆的起动操作之间的时间间隔最小化,并使摄像机相机变得均匀 隔膜控制的精度。
    • 9. 发明授权
    • Focal plane shutter for a camera
    • 焦平面快门用于相机
    • US4153360A
    • 1979-05-08
    • US764287
    • 1977-01-31
    • Noboru KodairaNobuo TezukaMitio SenumaTeiji HashimotoMasanori UchidoiYukio Iura
    • Noboru KodairaNobuo TezukaMitio SenumaTeiji HashimotoMasanori UchidoiYukio Iura
    • G03B9/28G03B1/06G03B9/34
    • G03B1/06G03B9/34
    • A focal plane shutter for a camera includes a shutter unit casing for supporting a shutter mechanism. A rotatable body is connected with the shutter for winding up the shutter to a charged position. A shutter driving spring is also connected with the shutter mechanism for driving the shutter and a holding member is coupled with the rotatable body for holding the shutter mechanism in a charged position. A driving shaft carrying a driving gear is coupled to the rotatable body through a transmission gear and a clutch. A spring is coupled with the clutch to urge the clutch in a direction for releasing engagement between the transmission gear and the rotatable body. The driving gear has a plane section on its circumferential periphery spacing adjacent teeth apart so that engagement between the driving gear and the transmission gear is released when the rotatable body is held so that the transmission gear and the clutch can rotate, under the influence of the spring, back to the initial position.
    • 用于相机的焦平面快门包括用于支撑快门机构的快门单元壳体。 可旋转体与快门连接,用于将快门卷绕到充电位置。 快门驱动弹簧还与快门机构连接以驱动快门,并且保持构件与可旋转体联接,用于将快门机构保持在充电位置。 承载驱动齿轮的驱动轴通过传动齿轮和离合器联接到旋转体。 弹簧与离合器联接以沿着用于释放传动齿轮和可旋转体之间的接合的方向推动离合器。 驱动齿轮具有在其周向间隔相邻的间隔的平面部分,使得当可旋转体被保持时驱动齿轮和传动齿轮之间的接合被释放,使得传动齿轮和离合器可以在 春天,回到初始位置。
    • 10. 发明授权
    • Automatic winding up device for a camera
    • 相机自动上弦装置
    • US4182562A
    • 1980-01-08
    • US868862
    • 1978-01-12
    • Tomonori IwashitaMasanori UchidoiToshikazu IchiyanagiTetsuya TaguchiYukio IuraHiroshi Aizawa
    • Tomonori IwashitaMasanori UchidoiToshikazu IchiyanagiTetsuya TaguchiYukio IuraHiroshi Aizawa
    • G03B17/42G03B1/12G03B9/64
    • G03B17/425
    • An automatic winding up device for a camera, in which a device for detecting the winding up completion signal supplied from the camera body as well as a delay device starting to operate by the detection of the winding up completion signal by the detecting device are disclosed. These devices operate in such a manner that the current supply to the winding up motor is maintained during the operation of the delay device. This acts to overload the motor for a certain time determined by the delay device after the completion of the winding up operation and overloads the winding up mechanism of the camera body. The current supply to the motor is interrupted after lapse of a time determined by the delay device so as to stop the motor. The winding up member is driven in the reversed direction by the reaction of the overload exercised on the winding up mechanism so that the load exercised on the camera is released at the termination of the winding up operation.
    • 公开了一种用于摄像机的自动上弦装置,其中用于检测从相机机身提供的卷绕完成信号的装置以及通过检测装置检测到卷绕完成信号而开始工作的延迟装置。 这些装置的工作方式是在延迟装置的操作期间保持对卷绕电动机的电流供应。 这样做可以使电机在完成卷绕操作后由延迟装置确定一定时间,并使相机机身的卷绕机构过载。 在经过由延迟装置确定的时间之后,马达的电流供应中断,以便停止电动机。 通过在卷绕机构上施加的过载的反应,卷绕部件沿相反方向驱动,使得在卷绕操作结束时释放在相机上的负载。