Patent ID: 11906068
Assignee: FUJIKOKI CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  H  Y | IPC F

Claim 0:
1. An electrically operated valve comprising:
a valve main body having a valve seat;
a motor including:
a stator fixed to the valve main body, and
a rotor driven to rotate with respect to the stator,

a planetary gear type deceleration mechanism configured to decelerate rotation of the rotor to transmit to an output gear;
a valve member configured to be movable toward and away from the valve seat in an axial direction; and
a feed screw mechanism configured to convert rotational movement of the output gear into movement of the valve member in the axial direction;
wherein:
the planetary gear type deceleration mechanism includes:
a sun gear coupled to the rotor,
a planetary gear engaged with the sun gear,
a carrier for rotatably supporting the planetary gear,
an annular ring gear engaged with the planetary gear, and
a sliding member abutting against an axial end of the sun gear,

the output gear has a different number of teeth than the ring gear, and engages with the planetary gear, and
the sliding member is made of a different material from the material of the sun gear, the sliding member is:
a washer-shaped annular body disposed between the sun gear and the carrier and is freely slidingly rotatable with respect to both the axial end of the sun gear and the carrier, or
an output shaft that is connected to the output gear and slidingly rotates against the axial end of the sun gear.