A torque position-limiting device includes a pivot member affixed to an external substrate, two compressible arms respectively extended from two opposite ends thereof toward each other with a gap defined therebetween and a smoothly curved bearing surface located on an outer side of each elastically compressible arm, and a position-limiting member including a circular pivot hole pivotally coupled to the pivot member, an abutment surface located on an inner perimeter thereof and abutted against each smoothly curved bearing surface of the pivot member and an outer ring gear portion located on an opposing outer perimeter thereof and drivable by an external force to turn the position-limiting member about the pivot member and to further cause generation of a friction force between each smoothly curved bearing surface of the pivot member and the abutment surface of the position-limiting member.

A torque position-limiting device includes a pivot member affixed to an external substrate, two compressible arms respectively extended from two opposite ends thereof toward each other with a gap defined therebetween and a smoothly curved bearing surface located on an outer side of each elastically compressible arm, and a position-limiting member including a circular pivot hole pivotally coupled to the pivot member, an abutment surface located on an inner perimeter thereof and abutted against each smoothly curved bearing surface of the pivot member and an outer ring gear portion located on an opposing outer perimeter thereof and drivable by an external force to turn the position-limiting member about the pivot member and to further cause generation of a friction force between each smoothly curved bearing surface of the pivot member and the abutment surface of the position-limiting member.

A structure of a rotation locking device that is easily configured and capable of keeping cost down is achieved.

A rotation locking device 4 switches between a first mode where an engaging claw portion 14 engages with an engaging concave portion 9 by an output member 13 rotating an engaging member 8 due to an input member 12 being rotationally driven by an actuator 7, and rotation of a locking gear 5 supported by and fixed to an output shaft 3 of an automatic transmission 2 is restricted, and a second mode where engagement between the engaging claw portion 14 and the engaging concave portion 9 is released and rotation of the locking gear 5 is allowed.

A structure of a rotation locking device that is easily configured and capable of keeping cost down is achieved.

A rotation locking device 4 switches between a first mode where an engaging claw portion 14 engages with an engaging concave portion 9 by an output member 13 rotating an engaging member 8 due to an input member 12 being rotationally driven by an actuator 7, and rotation of a locking gear 5 supported by and fixed to an output shaft 3 of an automatic transmission 2 is restricted, and a second mode where engagement between the engaging claw portion 14 and the engaging concave portion 9 is released and rotation of the locking gear 5 is allowed.

A worm drive apparatus includes a worm drive assembly having a worm engaged with a worm shaft and positioned within a housing; and a first gear engaged with the worm shaft; a worm wheel positioned within a channel created by the housing, the worm wheel engaged with a shaft extending through the channel; a friction assembly engaged with the worm wheel and the shaft, the friction assembly having a friction disk positioned adjacent to the worm wheel; a lock washer positioned adjacent to the friction disk; and a wave spring positioned adjacent to the lock washer; the friction assembly aids in preventing unwanted movement of the apparatus; and the worm wheel and first gear are to engage.

A worm drive apparatus includes a worm drive assembly having a worm engaged with a worm shaft and positioned within a housing; and a first gear engaged with the worm shaft; a worm wheel positioned within a channel created by the housing, the worm wheel engaged with a shaft extending through the channel; a friction assembly engaged with the worm wheel and the shaft, the friction assembly having a friction disk positioned adjacent to the worm wheel; a lock washer positioned adjacent to the friction disk; and a wave spring positioned adjacent to the lock washer; the friction assembly aids in preventing unwanted movement of the apparatus; and the worm wheel and first gear are to engage.

A rotary drive member drives a driven member. A ring surrounding the driven member has two cam recesses containing lock members between cam surfaces of cam recesses and the ring. Each recess accommodates an associated lock member at different locations where the recess is shallower. Driving the driven member is permitted in a given rotation relative to the ring, but each lock member inhibits rotation of the driven member in the opposite sense. The recesses extend in opposite directions. Coupling between the driven members is free-play whereby reversal in the rotation disengages members and reengages. Protuberances extending into cam recesses retain a lock member associated with one recess at the deeper location permitting movement of the other lock member towards the shallower location. Upon reversal of the rotation, the protuberances retain another lock member at the deeper location permitting movement of one lock member.

Disclosed is an actuator for a parking brake. In accordance with an aspect of the disclosure an actuator for a parking brake includes a motor generating power; a reduction gear portion configured to transmit the power of the motor to a parking portion implementing the parking braking of a vehicle; a locking portion configured to limit rotation of the reduction gear portion; and a housing in which the motor, the reduction gear portion, and the locking portion are accommodated; wherein the locking portion is configured to a lock gear coupled to the reduction gear portion to rotate together, a lever provided to be engaged with the lock gear through a hinge motion, an elastic member elastically supporting the lever toward the lock gear, and an electromagnet member that generates electromagnetic force when the power is applied to separate the lever from the lock gear.

A diverter valve includes a diverter valve assembly, a diverter valve transmission assembly, a drive motor and a control device used to control the drive motor. Controlled by the control device, the drive motor drives the diverter valve transmission assembly to perform a transmission action, so as to drive the diverter valve assembly to perform switching actions. The diverter valve transmission assembly is an intermittent gear transmission assembly. Driven by the drive motor, each time the intermittent gear transmission assembly performs the transmission action at least once, the control device controls the drive motor to stop driving. In this way, during the action process, not only the transmission is stable and reliable, the noise is low, but it is also wear-resistant enough under high-frequency use, which can meet the requirements of long-term working consumption of the beverage machine.

A diverter valve includes a diverter valve assembly, a diverter valve transmission assembly, a drive motor and a control device used to control the drive motor. Controlled by the control device, the drive motor drives the diverter valve transmission assembly to perform a transmission action, so as to drive the diverter valve assembly to perform switching actions. The diverter valve transmission assembly is an intermittent gear transmission assembly. Driven by the drive motor, each time the intermittent gear transmission assembly performs the transmission action at least once, the control device controls the drive motor to stop driving. In this way, during the action process, not only the transmission is stable and reliable, the noise is low, but it is also wear-resistant enough under high-frequency use, which can meet the requirements of long-term working consumption of the beverage machine.