Drive device
AssigneeStabilus GmbH
InventorMarian Bochen
Life of this patent
Estimating the term…
Abstract
A driving device for a hatch in a vehicle, with a housing tube connected to a base part or to a movable structural component part, a protective tube connected to the movable structural component part or to the base part, a spindle drive having a threaded spindle and a spindle nut arranged on the threaded spindle by which the housing tube and the protective tube are movable axially relative to one another. A rotary drive drives the spindle drive in rotation includes at least one electric motor. The driving device has a safety circuit that causes a braking effect on the rotary drive when the rotary drive is deactivated and when extraneous forces are introduced into the driving device from the outside.
Claims14
A driving device for a hatch in a vehicle, comprising:
- a housing tube configured to be connected to one of a stationary base part and a movable structural component part of the vehicle;
- a protective tube configured to be connected to the other of the stationary base part and the movable structural component part of the vehicle;
- a spindle drive comprising a threaded spindle and a spindle nut arranged on the threaded spindle configured to move the housing tube and the protective tube axially relative to one another;
- a rotary drive that drives the spindle drive in rotation comprising at least one electric motor;
- and
- a safety circuit configured to cause a braking effect on the rotary drive when the rotary drive is deactivated by short circuiting a winding of the rotary drive and when extraneous external forces are introduced into the driving device, wherein the safety circuit comprises:
- an electronics board arranged in the housing tube;
- and
- an arrangement for sensing speed and rotational direction of the rotary drive,
- wherein the safety circuit works independently from the arrangement for sensing speed and rotational direction.
Dependencies are inferred from the claim text.