Title:
ELECTROHYDRAULIC ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2015/007535
Kind Code:
A3
Abstract:
The invention relates to an electrohydraulic actuator comprising a hydraulic piston, a spindle drive for moving the piston along an axis of rotation, wherein the spindle drive comprises a spindle and a nut, and a worm wheel, which is coaxially attached to the nut. Furthermore, an electric motor having a worm, which meshes with the worm wheel, is provided. The nut is radially and axially supported by means of a bearing. In addition, there is a single-armed rotation-prevention mechanism in order to prevent the spindle from rotating. An angle with respect to the axis of rotation is included between a point of action of the worm on the worm wheel and the effective direction of the rotation-prevention mechanism, wherein the angle is selected in such a way that, for a predetermined torque acting on the nut, a radial force acting on the piston is minimized.
Inventors:
KOHLER STEPHAN (DE)
KRUEGER HARTMUT (DE)
DURIX LUCAS (FR)
KRUEGER HARTMUT (DE)
DURIX LUCAS (FR)
Application Number:
PCT/EP2014/064225
Publication Date:
September 17, 2015
Filing Date:
July 03, 2014
Export Citation:
Assignee:
BOSCH GMBH ROBERT (DE)
International Classes:
B60T13/74; B60T1/00; F16H63/16
Foreign References:
| GB2351129A | 2000-12-20 | |||
| DE102011078360A1 | 2013-01-03 |
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