Elektrischer Stellantrieb und Elektrische Feststellbremsanlage

Details

Veröffentlichungs-Nr.

EP3418140

Aktenzeichen

EP18179272

Anmeldetag

22. Juni 2018

Veröffentlichung

18. September 2019

Erteilung

18. September 2019

Rechtsraum

EP

IPC

B60T11/04// F16D121/14

Abstract

An electric actuator includes: a screw shaft coupled to a power transmission member continuing to an operated member urged toward a non-operating position; an actuator case configured to support the screw shaft such that the screw shaft is reciprocally moveable in an axis direction while restraining rotation of the screw shaft; an electric motor supported to the actuator case to be rotatable in forward and backward directions; and a movement conversion mechanism having a nut to be engaged with the screw shaft, as one constitutional element, configured to convert rotary movement to be generated from the electric motor into linear movement of the screw shaft, and accommodated in the actuator case with being provided between the electric motor and the screw shaft. A state in which the power transmission member is to be pulled so as to drive the operated member toward an operating position and a state in which the power transmission member is to be loosened so as to return the operated member from the operating position to the non-operating position are switched by a change in a rotating direction of the electric motor. The screw shaft is provided with a flange part protruding radially outward, the nut is coaxially formed with a concave part opening toward the flange part, and a resilient member, which is interposed between the flange part and the nut and is configured to apply a resilient force of urging the flange part in a direction of separating from the nut when the screw shaft is moved in a direction in which the power transmission member is to be loosened, is accommodated in the concave part.

Anmelder

Firma

Nissin Kogyo Co., Ltd.

Land

🇯🇵 Japan

Fachgebiete