US 10,501,037 B2 · Pedestrian protection device for a motor vehicle

Abstract

A pedestrian protection device for a motor vehicle, for example for a motor vehicle front end or a motor vehicle rear end, has a bumper crossmember with a deformation element arranged on the outer side thereof, i.e. the side directed towards the front. In particular, the deformation element is arranged between a bumper skin and the bumper crossmember. The deformation element has a first element and a second element which are displaceable relative to one another in the event of a collision. Furthermore, the pedestrian protection device has a locking mechanism which, in dependence on a displacement speed, and thus on a collision speed, of the motor vehicle, and while exploiting a mass inertia of a locking element which is arranged or mounted on the first element or the second element, is adjustable between a locked state in which a displacement of the first element relative to the second element is at least partially prevented by, in particular, positive engagement, and an unlocked state in which a displacement of the first element is allowed.

Claims20

Dependent claims

A pedestrian protection device for a motor vehicle, comprising:

a bumper transverse support;
a deformation element, which is arranged on an exterior side of the bumper transverse support, the deformation element having (i) a first element and a second element, which, in the event of a collision, are displaceable relative to one another in the direction of the bumper transverse support, and (ii) a mechanical latching mechanism having a latching element and a spring device, wherein:
the mechanical latching mechanism, as a function of a displacement speed while utilizing a mass inertia of the latching element, is adjustable between a latched condition, in which a displacement of the first element relative to the second element is at least partially prevented, and, an unlatched condition, in which a displacement of the first element is permitted,
the latching element and the spring device are constructed for interacting such that, via displacement of the first element and the second element relative to one another, the latching element is prestressed by the spring device before the latching element reaches the latched condition.

1 more element

A pedestrian protection device for a motor vehicle, comprising:

a bumper transverse support;
a deformation element, which is arranged on the transverse support and whose deformation region is constructed on an exterior side of the transverse support,
wherein the deformation element has:
(i) a first element and a second element, which, in the event of a collision, are displaceable relative to one another in the direction of the transverse support, and
(ii) a mechanical latching mechanism which has a movable latching element and a spring device, the movable latching element being pre-stressable or being prestressed via the spring device, which latching element is arranged on the first element or the second element and is form-lockingly engageable with an indentation or a step at the other of the first element or the second element, and
wherein the latching element and the spring device are constructed to be interacting such that, with a displacement of the first element and the second element relative to one another, the latching element is prestressable via the spring device before the latching element reaches the form-locking engagement with the indentation or the step.

3 more elements

Dependencies are inferred from the claim text.

Pedestrian protection device for a motor vehicle

Life of this patent

Pedestrian protection device for a motor vehicle

Life of this patent

Abstract

Claims20