JP2022170458A5 - - Google Patents

Description

Moreover, the magnet cover that covers at least a portion of the magnet can prevent the magnet from being damaged and scattered around. As a result, it is possible to suppress malfunction of the prime mover, speed reducer, and the like. In addition, since the magnet cover can suppress the contact between the carrier and the rotor, wear of the rotor and changes in magnetic properties can be suppressed. As a result, stable operation of the prime mover can be maintained.
The magnet cover is made of non-magnetic material.

Claims (7)

an engagement state between the first transmission portion (61) and the second transmission portion (62) that are capable of relative rotation, allowing transmission of torque between the first transmission portion and the second transmission portion; A clutch actuator (1) for use in a clutch device (1) comprising a clutch (70) that changes between a disengaged state and a disengaged state that interrupts transmission of torque between a first transmission section and a second transmission section. ,
a housing (12);
It has a stator (21) provided in the housing, a rotor (23) provided rotatably relative to the stator, and a magnet (230) provided in the rotor. a prime mover (20) capable of outputting torque;
a magnet cover (24) provided to cover at least part of the magnet;
a reducer (30) capable of reducing and outputting the torque of the prime mover;
a rotating part (40) that rotates relative to the housing when a torque output from the speed reducer is input; a rotary translator (2) having a translator (50) capable of changing the state of the clutch to engaged or disengaged;
The speed reducer is
a sun gear (31) to which torque from the rotor is input;
a planetary gear (32) capable of revolving in the circumferential direction of the sun gear while meshing with the sun gear and rotating;
a carrier (33) that rotatably supports the planetary gear and is rotatable relative to the sun gear;
a first ring gear (34) meshable with the planetary gear; and
a second ring gear (35) that can mesh with the planetary gear, is formed to have a number of teeth different from that of the first ring gear, and outputs torque to the rotating part;
The carrier is
radially outside the sun gear and radially inside the first ring gear and the second ring gear,
It is provided so as to be able to contact the magnet cover or the rotating part,
The magnet cover is a clutch actuator made of a non-magnetic material . The clutch actuator according to claim 1, wherein the magnet cover has a cover plate portion (241) covering the carrier side of the magnet. A clutch actuator according to claim 1 or 2 , wherein said magnet cover has a cover projection (245) capable of contacting said carrier. 4. The outer wall of the convex portion of the cover that can come into contact with the carrier, according to claim 3 , wherein the outer wall of the convex portion of the cover is formed in a curved shape that protrudes toward the carrier in a cross section along a plane including the axis of the magnet cover. clutch actuator. The carrier is
A clutch actuator according to any one of claims 1 to 4 , having a pin (335) provided at the center of rotation of said planetary gear so that an end thereof can come into contact with said magnet cover or said rotating part. The clutch actuator of claim 5 , wherein said pin end (337) is SR-shaped. A clutch actuator according to claim 5 or 6 , wherein at least one of said magnet cover and said rotating part has an annular pin sliding groove (45) in which said end of said pin can slide.