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US 2014/0270748 A1Published application
Shutter apparatus and image pickup apparatus
AssigneeCanon Kabushiki Kaisha
InventorsMasanori Sakai, Koichi Ito
Life of this patent
Estimating the term…
Abstract
A shutter apparatus includes a blade member, a blade moving member, a locking member, a cam member, and a restriction member. The cam member moves the locking member from the locking position to the non-locking position so that the blade moving member moves from the closing position to the opening position. The restriction member moves from the non-restriction position to the restriction position after the blade moving member moves from the closing position to the opening position. The cam member moves the locking member in a direction opposite to a direction from the non-locking position to the locking position so that the locking member moves the restriction member from the restriction position to the non-restriction position.
Claims12
A shutter apparatus comprising:
- a blade member configured to open and close an exposure opening;
- a blade moving member configured to move between an opening position in which the blade member opens the exposure opening, and a closing position in which the blade member closes the exposure opening;
- a locking member configured to move between a locking position in which the blade moving member is locked at the closing position, and a non-locking position in which the blade moving member is not locked at the closing position;
- a cam member including a cam portion which abuts against the locking member so as to move the locking member from the locking position to the non-locking position;
- and
- a restriction member configured to move between a restriction position in which a movement of the blade moving member from the opening position to the closing position is restricted, and a non-restriction position in which the movement of the blade moving member from the opening position to the closing position is not restricted,
- wherein the cam member moves the locking member from the locking position to the non-locking position so that the blade moving member moves from the closing position to the opening position,
- wherein the restriction member moves from the non-restriction position to the restriction position after the blade moving member moves from the closing position to the opening position, and
- wherein the cam member moves the locking member in a direction opposite to a direction from the non-locking position to the locking position so that the locking member moves the restriction member from the restriction position to the non-restriction position.
6 more elements
An image pickup apparatus comprising:
- a blade member configured to open and close an exposure opening;
- a blade moving member configured to move between an opening position, in which the blade member opens the exposure opening, and a closing position, in which the blade member closes the exposure opening;
- a locking member configured to move between a locking position, in which the blade moving member is locked at the closing position, and a non-locking position, in which the blade moving member is not locked at the closing position;
- a cam member including a cam portion which abuts against the locking member so as to move the locking member from the locking position to the non-locking position;
- and
- a restriction member configured to move between a restriction position, in which a moving of the blade moving member from the opening position to the closing position is restricted, and a non-restriction position, in which the movement of the blade moving member from the opening position to the closing position is not restricted,
- wherein the cam member moves the locking member from the locking position to the non-locking position so that the blade moving member moves from the closing position to the opening position,
- wherein the restriction member moves from the non-restriction position to the restriction position after the blade moving member moves from the closing position to the opening position, and
- wherein the cam member moves the locking member in a direction opposite to a direction from the non-locking position to the locking position so that the locking member moves the restriction member from the restriction position to the non-restriction position.
6 more elements
An image pickup apparatus comprising:
- a mirror;
- a mirror driving member configured to drive the mirror between a mirror up position and a mirror down position;
- a first urging member configured to urge the mirror driving member;
- a blade member configured to open and close an exposure opening;
- a blade driving member configured to drive the blade member;
- a second urging member configured to urge the blade driving member;
- and
- a charge member configured to drive the mirror driving member against an urging force of the first urging member so as to charge the first urging member and to drive the blade driving member against an urging force of the second urging member so as to charge the second urging member,
- wherein the charge member includes a mirror charge cam portion which abuts against the mirror driving member and a shutter charge cam portion which abuts against the blade driving member,
- wherein when the charge member rotates in a first direction in a case where the mirror driving member abuts against the mirror charge cam portion, the charge member charges the first urging member and the second urging member, and
- wherein when the charge member rotates in the first direction in a case where the mirror driving member does not the mirror charge cam portion, the charge member charges the second urging member without charging the first urging member.
8 more elements
Dependencies are inferred from the claim text.