Stabilus Gmbh

Christoph Ulrich

Ulrich Probst

Lars Löhken

Markus Müller

Arne Koehler

Ulrich Koestler

Jonathan Keßler

Nadja Kaiser

Joshua Burrell

Martin Neitzert

Lars LÖHKEN

Provided is a drive device for the movement of a closure element of a motor vehicle relative to a body of the motor vehicle including an outer tube with a longitudinal axis for coupling to the body, an inner element arranged in the outer tube for coupling to the closure element, a helical compression spring arranged between the inner element and the outer tube, and an internal guide element arranged between the inner element and the helical compression spring and axially fixed to the inner element for the internal guidance of an internal guide end section of the helical compression spring. The inner element is extendable along the longitudinal axis from the outer tube. The helical compression spring is compressed against a spring tension of the helical compression spring when the inner element is pulled out of the outer tube.

Drive device for moving a closure element of a motor vehicle

The invention relates to a movement-damping unit () comprising a receiving tube () having a longitudinal axis (A), a relative movement unit () which is received in the receiving tube () and which is displaceable back and forth relative to the receiving tube () substantially in the direction of the longitudinal axis (A), and a friction device () acting between the receiving tube () and the relative movement unit (). According to the invention, the friction device () comprises at least one switching element () assigned to the relative movement unit () and having an engagement portion () formed so as to widen radially in the direction of the longitudinal axis (A), wherein at least one resiliently compressible friction element (), which comprises a recess () intended for engagement with the engagement portion () and is arranged on the longitudinal face of smaller diameter of the switching element (), is assigned to each switching element ().

Movement-damping unit and spring unit comprising a movement-damping unit of this type

A spring device at a swivelable hatch of a motor vehicle, having a gas spring and a helper spring between the body of the motor vehicle and the hatch. The hatch is a front hood which can be raised into a pedestrian protection position prior to an impact of a pedestrian on the front hood, by an actuator activated by a sensor device. The helper spring is preloaded with a preloading force which, in case of a malfunction in which the gas spring has no gas pressure or a reduced gas pressure, is sufficient to adjust the front hood into the raised pedestrian protection position and to hold the front hood in the raised pedestrian protection position prior to the impact.

Spring device at a swivelable hatch of a motor vehicle

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Kratzenburg, Germany

Christoph Ulrich