Opening and closing device
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsMasaki Nakase, Yasuchika Kudo, Koji Sakai, Hidenobu Sakai, Kiyokazu Yabukami
Life of this patent
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Abstract
An opening and closing device includes a rotor pressed by a rotor spring and a reverse-rotor pressed by reverse-rotor spring, of which rotor cam and reverse-rotor cam are respectively placed at a certain position of stator cam. With this construction, rotor is urged in an opening direction in the opening condition and urged in a closing direction in the closing condition with respect to stator. A release cam pushes the reverse-rotor cam by moving a releaser along an axis, so that the device opens.
Claims12
An opening and closing device comprising:
- a stator having a stator cam;
- a rotor having a rotor cam urged in an axial direction to be in contact with the stator cam by a rotor spring;
- a reverse-rotor having a reverse-rotor cam urged in the axial direction to be in contact with the stator cam by a reverse rotor spring, the reverse-rotor spring accommodated in an inner periphery of the rotor spring;
- and,
- a releaser having a release cam and being movable along an axis;
- so that when the releaser moves along the axis, the release-cam presses against the reverse-rotor cam of the reverse-rotor causing rotation of the reverse-rotor, to cause said device to open.
An opening and closing device comprising:
- a rotary case in substantially tubular shape;
- a fix cover covering an end of the rotary case;
- a stator, a rotor, and a rotor spring in coil shape inside the rotary case and aligned along substantially a same axis;
- a releaser accommodated in an inner periphery of the stator and the rotor;
- a fix shaft with an end thereof connected to the fix cover and another end thereof connected to the stator;
- a reverse-rotor accommodated in an inner periphery of the rotor;
- and
- a reverse-rotor spring, which is accommodated in an inner periphery of the rotor spring, for pushing the reverse rotor,
- wherein the stator has a first stator cam and a second stator cam facing the reverse rotor,
- wherein an inclined angle or a tip portion of the first stator cam is different from an inclined angle of a tip portion of the second stator cam.
Dependencies are inferred from the claim text.