ELECTROMAGNETIC CLUTCH DEVICE

摘要

An electromagnetic clutch device includes meshing member connected to a first rotational member, a biasing member that biases the meshing member in a direction where a second meshing portion is meshed with a first meshing portion, and a pressing mechanism including a locking portion that presses the meshing member against a biasing force of the biasing member so as to axially move the meshing member. The locking portion is axially immovable relative to the second rotational member, and a cylindrical cam member is provided with a plurality of locked portions to be locked at different axial positions. Locking of the locking portion is shifted from one of the plurality of locked portions to another locked portion placed at a different axial position, and friction torque is caused to synchronize rotation of the first rotational member with that of the second rotational member.

主权项

1. An electromagnetic clutch device configured to connect a first rotational member to a second rotational member in a torque transmittable manner, the electromagnetic clutch device comprising:
a meshing member including a second meshing portion to be meshed with a first meshing portion provided in the second rotational member, the meshing member being connected to the first rotational member in an axially movable but relatively non-rotatable manner; a biasing member that biases the meshing member in a direction where the second meshing portion is meshed with the first meshing portion; and a pressing mechanism including a locking portion that presses the meshing member against a biasing force of the biasing member so as to axially move the meshing member, the locking portion being provided so as to be axially immovable relative to the second rotational member, and a cylindrical cam member provided with a plurality of locked portions to be locked by the locking portion at different axial positions, the pressing mechanism being configured such that locking of the locking portion is shifted from one of the plurality of locked portions to another locked portion placed at a different axial position, wherein, in a course of shifting from an uncoupled state to a coupled state along with an axial movement of the cam member, a friction torque is caused so as to synchronize a rotation of the first rotational member with a rotation of the second rotational member.