公开(公告)号：US4333721A

公开(公告)日：1982-06-08

申请号：US163405

申请日：1980-06-26

申请人： Syozo Yoshida ,  Yoji Sugiura

发明人： Syozo Yoshida ,  Yoji Sugiura

IPC分类号： G03B9/36 ,  G03B9/08

CPC分类号： G03B9/08

摘要： An electromagnetically driven shutter of which the leading and trailing curtains are driven by respective electromagnetic drive sources to make a forward and backward movement. The electromagnetic drive sources each have a magnetic winding constructed in a unified form of two coils arranged to be supplied with respective currents flowing in direction opposite to each other so that the forward movement of each of the leading and trailing curtains is followed, after a controlled time interval, by the backward movement thereof.

摘要翻译： 电磁驱动的快门，前帘和后帘由相应的电磁驱动源驱动以进行向前和向后的运动。 电磁驱动源各自具有构造成两个线圈的统一形式的磁性绕组，其被布置成供应相互以相反方向流动的相应电流，使得在控制之后遵循每个前帘和后帘的向前运动 时间间隔。

公开(公告)号：US4312583A

公开(公告)日：1982-01-26

申请号：US217038

申请日：1980-12-16

申请人： Takehiko Ohniwa ,  Yoji Sugiura

发明人： Takehiko Ohniwa ,  Yoji Sugiura

IPC分类号： G03B7/00 ,  G03B9/08 ,  G03B9/10

CPC分类号： G03B9/08

摘要： An electromagnetic device for driving a shutter includes a moving coil which is arranged to rotate in the magnetic field of a stator. A current supply arrangement for supplying exciting current to the moving coil includes a pair of insulated side pieces fixed about the rotational axis of the coil and connected to both terminals of the moving coil, and a pair of elastic rod-shaped brushes pressed against the side pieces on diametrically opposite sides of the rotational axis. A slide surface on each slide piece is provided with at a pair of flatened portions against which the elastic rod-shaped brushes are pressed so as to hold the shutter blades at a stop position.

摘要翻译： 用于驱动闸门的电磁装置包括被设置成在定子​​的磁场中旋转的动圈。 用于向动圈供给励磁电流的电流供给装置包括围绕线圈的旋转轴线固定并连接到动圈的两端的一对绝缘侧片，以及一对按压在侧面上的弹性棒状刷 在旋转轴的径向相对侧上的片。 每个滑块上的滑动表面设置有一对扁平部分，弹性棒状刷被按压到该平坦部分上，以将快门叶片保持在停止位置。

公开(公告)号：US4297013A

公开(公告)日：1981-10-27

申请号：US116314

申请日：1980-01-28

申请人： Masaharu Kawamura ,  Masanori Uchidoi ,  Yoshihiro Shigeta ,  Yoji Sugiura ,  Hiroshi Yamamoto

发明人： Masaharu Kawamura ,  Masanori Uchidoi ,  Yoshihiro Shigeta ,  Yoji Sugiura ,  Hiroshi Yamamoto

IPC分类号： G03B7/091 ,  G03B7/16 ,  G03B7/093 ,  G03B9/62 ,  G03B17/38

CPC分类号： G03B7/16 ,  G03B7/093

摘要： A digital system for controlling coordination of the various portions of the camera to operate in selected modes including the automatic and bulb modes is provided with signal forming means comprising a count start switch and a bulb control switch connected in parallel to each other. Where the automatic mode is selected, in a predetermined time interval after the initiation of an actuation of release of the camera, as the both switches are open, the signal forming means produces an actuating signal which is then applied to discriminating means, causing the shutter to operate automatically. Where the bulb mode is selected, no actuating signal is produced even after the termination of duration of the predetermined time interval so that the discriminating means permits the opening of the shutter to continue until the termination of the release actuation.

摘要翻译： 用于控制相机的各个部分的协调以在包括自动和灯泡模式的选定模式中操作的数字系统被提供有包括计数启动开关和灯泡控制开关并联连接的信号形成装置。 在自动模式被选择的情况下，在开始释放相机的预定时间间隔中，当两个开关打开时，信号形成装置产生一个致动信号，然后将该启动信号施加到识别装置，从而使快门 自动运行。 在选择灯泡模式的情况下，即使在预定时间间隔的持续时间结束之后也不产生致动信号，使得识别装置允许快门的打开持续直到释放致动结束。

公开(公告)号：US4236802A

公开(公告)日：1980-12-02

申请号：US70800

申请日：1979-08-29

申请人： Masanori Uchidoi ,  Masaharu Kawamura ,  Yoshihiro Shigeta ,  Yoji Sugiura ,  Hiroshi Yamamoto ,  Nobuo Tezuka

发明人： Masanori Uchidoi ,  Masaharu Kawamura ,  Yoshihiro Shigeta ,  Yoji Sugiura ,  Hiroshi Yamamoto ,  Nobuo Tezuka

IPC分类号： G03B7/00 ,  G03B7/08 ,  G03B7/083 ,  G03B17/20 ,  G05B19/02 ,  G03B17/38 ,  G03B17/18

CPC分类号： G03B17/20 ,  G03B7/0807

摘要： A safety device for preventing non exposure of film in a camera having a count switch which is normally closed prior to shutter release operation, the switch being opened after the shutter release operation begins to enable a timing circuit to start operating. In a preferred embodiment, the device includes a NOR gate having an input connected to one side of the count switch, and its output connected to the set terminal of a flip-flop which enables the shutter release operation. Another input of the NOR gate is connected to a differentiation circuit which provides an output signal when the shutter release button on the camera is actuated. This circuit arrangement operates so that the flip-flop is not set if the count switch is accidently in an open state when the release button is actuated. The shutter release operation is thereby prevented until the count switch is restored to working order.

摘要翻译： 一种安全装置，用于防止在具有在快门释放操作之前常闭的计数开关的相机中未曝光的胶片，开关在快门释放操作开始之后打开以使定时电路开始运行。 在优选实施例中，该器件包括NOR门，其具有连接到计数开关的一侧的输入，其输出连接到能够进行快门释放操作的触发器的设定端子。 NOR门的另一个输入端连接到差分电路，该差分电路当相机上的快门释放按钮被致动时提供输出信号。 如果计数开关在释放按钮被启动时意外地处于打开状态，则该电路装置工作，使得触发器不被置位。 由此防止快门释放操作，直到计数开关恢复到工作状态。