Nidec Copal Corporation

Copal Company Limited

Kenichi Watabe

Toshihisa Saito

Akira Suzuki

Hiroshi Miyazaki

Toru Ishimasa

Shigemi Takahashi

Tomihiro Wakayama

Yoji Fujimura

Hiroshi Miyasaki

Tomonori Shinozaki

Haruki Oe

The flow rate controlling device according to the present invention comprises: a base that has an opening portion a ring member that is provided encompassing the opening portion and that can rotate around the opening portion a motor for rotating the ring member, and a plurality of blade members that are supported on the base to the outside of the opening portion in the radial direction, and that can rotate around rotary shafts that are parallel to the axis of the opening portion, wherein: groove portions are formed in the ring member; protruding portions that can slide within the groove portions are formed on the blade members; and the motor rotates the ring member to slide the protruding portions within the groove portions to rotate the plurality of blade members to open and close the opening portion.

Flow rate control device and vehicle

A lens driving apparatus that can be installed in an optical unit. The lens driving apparatus includes a lead screw rotated by rotation of a motor, a lens holder movable reciprocally along a rotation axis line of the lead screw by rotation of the lead screw, a guide shaft extending in parallel with the rotation axis line. The guide shaft passes through the lens holder to guide movement of a lens held at a free end of the lens holder in a cantilevered state.

Lens driving apparatus

A camera focal plane shutter according to the invention comprises a shutter blade for opening and closing an exposure aperture to carry out an exposure operation; an electromagnetic actuator for directly driving the shutter blade, and a positioning means for positioning the shutter blade at an operation starting position. This positioning means is comprised of a swing arm supported in a manner enabling it to swing so as to comes into contact with and separate from a drive pin of a rotor, a torsion spring for applying a pushing force so as to push one end of the swing arm against the drive pin, and an eccentric pin which stops the swing arm at a position with a predetermined angle against the pushing force of the torsion spring. Therefore, an impulse force caused by the movement of the shutter blade is eased, and the shutter blade is easily positioned with high accuracy at the operation starting position.

Camera focal plane shutter

A focal plane shutter for use in a photographic camera in which a shutter base plate is made of a synthetic resin material and a metallic supporting plate is mounted on a front surface of the shutter base plate. Shafts pivoting levers for driving a leading blade group and trailing blade group are fixed to a front surface of the metallic supporting plate, whereas shafts pivoting arms for driving the leading blade group and the trailing blade group are fixed to a rear surface of the supporting plate. The shafts pivoting the driving arms and supporting arms protrude from a rear surface of the shutter base plate.

Focal plane shutter for use in a photographic camera

The forcal plane shutter for cameras is equipped with a first release lever capable of retaining a rear blade group at position to close an exposure aperture, and a second release lever capable of maintaining a front blade group and the rear blade group at the unfolded position thereof and the folded position thereof respectively until the front blade group and the rear blade group are attracted and retained at the unfolded position and the folded position respectively securely with an electromagnetic device. The focal plane shutter is of a double light interruption type which has excellent response to the release signal and capable of assuring stable operations. The focal plane shutter further comprises a control means capable of retaining the first release lever in the released state thereof and can be set in a successive photographing mode accordingly.

Focal plane shutter for cameras

A focal plane shutter includes a first blade group which is moved forward from an unfolding state to an overlapping state to start an exposure in response to the release of a first blade driving spring and a second blade group which is moved forward from an overlapping state to an unfolding state to terminate the exposure in response to the release of a second blade driving spring. The force of the driving springs for applying the impellent force to the blade groups is removed from the corresponding blade groups before each of the blade groups reaches an end of forward movement so that the blade groups are moved by the force of inertia. The driving spring for applying the impellent force to the blade groups is engaged with a first arm formed on one end of a swingably supported brake lever before the blade group reaches the end of forward movement so that a second arm formed on the other endd of the brake lever is rotated to prevent the movement of the blade group. Since the blade groups are moved to the end of forward movement while receiving the braking force by engagement with the second arms of the corresponding brake levers, shock or oscillation at the termination of forward movement is reduced.

Growing community of inventors

Tokyo, Japan

Kenichi Watabe