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US 11,434,953 B2Granted
Electric actuator
AssigneeNtn Corporation
InventorsAkio Kato, Yuuki Naitou, Youhei Yamashita
Life of this patent
Estimating the term…
Abstract
An electric actuator 1 includes: an electric motor 10; a first motion conversion mechanism 20 that has a screw shaft 21 rotatably driven by the electric motor 10 and a nut 22 screwed with the screw shaft 21, and converts a rotary motion of the screw shaft 21 into a linear motion of the nut 22; and a housing 40 accommodating the electric motor 10 and the motion conversion mechanism 20. The housing 40 includes a pair of housing split bodies 41 and 42 split by a plane parallel to an axial direction of the screw shaft 21.
Claims8
An electric actuator comprising:
- an electric motor;
- a motion conversion mechanism that has a rotary member rotatably driven by the electric motor and a linear motion member screwed with the rotary member, the motion conversion mechanism converting a rotary motion of the rotary member into a linear motion of the linear motion member;
- and
- a housing accommodating the electric motor and the motion conversion mechanism,
- wherein the housing includes a pair of housing split bodies split by a plane parallel to an axial direction of the rotary member.
2 more elements
An electric actuator comprising:
- an electric motor;
- a motion conversion mechanism that has a rotary member rotatably driven by the electric motor and a linear motion member screwed with the rotary member, the motion conversion mechanism converting a rotary motion of the rotary member into a linear motion of the linear motion member;
- a housing accommodating the electric motor and the motion conversion mechanism;
- a radial bearing having an annular shape and supporting an outer peripheral surface of the rotary member;
- and
- a backup member interposed between the radial bearing and the housing,
- wherein the housing includes a pair of housing split bodies split by a plane parallel to an axial direction of the rotary member, and
- wherein a backup surface having a cylindrical surface shape and continuous over an entire periphery is provided on an inner peripheral surface of the backup member, and the radial bearing is attached to the backup surface.
5 more elements
Dependencies are inferred from the claim text.