초록 ▼

A clutch mechanism for selectively setting up or interrupting the delivery of a drive force in accordance with a direction and an amount of rotation of a shaft is disclosed. The mechanism includes a clutch gear rotated by the rotation of a motor. A slide cam is supported by a clutch shaft in such a

A clutch mechanism for selectively setting up or interrupting the delivery of a drive force in accordance with a direction and an amount of rotation of a shaft is disclosed. The mechanism includes a clutch gear rotated by the rotation of a motor. A slide cam is supported by a clutch shaft in such a manner as to be unrotatable relative to the shaft. Ratchet portions respectively provided on the clutch gear and slide cam are selectively coupled or uncoupled in accordance with the direction of rotation, thereby setting up or interrupting drive transmission. A cam portion is formed integrally with the slide cam and releases the ratchet portions when a pin is brought to a preselected position on a cam surface. A cam lever selectively moves the pin toward or away from the cam surface in accordance with the direction of rotation of the clutch gear. The drive source can be shared by a driveline for rotating a shaft to a preselected angular position and other drivelines.

대표청구항 ▼

[ What is claimed is:] [1.] A clutch mechanism for rotating a rotary shaft by transmitting a drive force output from a drive source to the rotary shaft, said clutch mechanism comprising:a transmission gear rotatable on receiving the drive force;a rotary member mounted on the rotary shaft and unrotat

[ What is claimed is:] [1.] A clutch mechanism for rotating a rotary shaft by transmitting a drive force output from a drive source to the rotary shaft, said clutch mechanism comprising:a transmission gear rotatable on receiving the drive force;a rotary member mounted on the rotary shaft and unrotatable relative to the rotary shaft;coupling/uncoupling means for selectively connecting or disconnecting said transmission gear from a stationary member in accordance with a direction of rotation of said transmission gear to thereby set up or interrupt delivery of the drive force to said rotary member;cancelling means provided with a cam surface having a preselected configuration and with which a slide member slidingly contacts, and for cancelling, when a slide surface rotating in accordance with a rotation of said rotary member reaches a predetermined position on said cam surface, a connection between said transmission gear and said rotary member; andmoving means for selectively moving said slide member in a forward or a reverse direction in accordance with the direction of rotation of said transmission gear to thereby move said slide member toward or away from said cam surface of said cancelling means.