Deformation structure and motor vehicle having a deformation structure
View Patent ↗A deformation energy absorption structure has at least a first layer and a second layer which are spaced apart from each other and are mounted to be movable relative to each other in the deformation or load direction. The first and second layers have complementary protrusions and recesses, which are designed such that the protrusions of the first layer can dip into the recesses of the second layer and the protrusions of the second layer can dip into the recesses of the first layer. The first layer and the second layer are connected to each other by a deformation control device such that, in the event of a high impulse in the deformation direction, the protrusions of the first layer dip into the recesses of the second layer and the protrusions of the second layer dip into the recesses of the first layer such that the deformation structure is deformed in the deformation direction at a relatively low level of force, and, in the event of a low impulse in the deformation direction, the protrusions of the first layer hit the protrusions of the second layer such that the deformation structure is deformed further in the deformation direction at a relatively high level of force or that a greater force can be transmitted by the deformation structure. The first and second layers are formed from a plurality of deformation base elements which are produced separately from one another and are interconnected.
1 . A deformation structure, comprising:
at least a first layer and a second layer which are arranged spaced apart from each other in a deformation direction so as to be able to be displaced with respect to each other,
wherein the first layer and the second layer have complementary projections and recesses which are constructed such that the projections of the first layer and the recesses of the second layer and the projections of the second layer and the recesses of the first layer are introducible into each other; and
a deformation control device by which the first layer and the second layer are connected to each other such that:
(i) in an event of a high pulse in the deformation direction, the projections of the first layer are introduced into the recesses of the second layer and the projections of the second layer are introduced into the recesses of the first layer so that a deformation of the deformation structure in the deformation direction is carried out at a low force level, and
(ii) in an event of a low pulse in the deformation direction, the projections of the first layer meet the projections of the second layer so that a deformation of the deformation structure in the deformation direction is carried out at a high force level;
wherein the first layer and the second layer are formed from a large number of identical, individually produced, deformation base elements, the deformation base elements forming each layer being interconnected, and
wherein lateral connection regions in a layer between two adjacent deformation base elements in the layer form respective ones of the projections or recesses.
2 . The deformation structure according to claim 1 , wherein
each deformation base element has a projection and/or a recess.
3 . The deformation structure according to claim 1 , wherein
the deformation base elements are connected to each other:
in a materially engaging manner,
via adhesive bonding or welding, and/or
in a positive-locking manner by an undercut clip-fit connection.
4 . The deformation structure according to claim 1 , wherein
the deformation base elements are extruded base elements.
5 . The deformation structure according to claim 4 , wherein
the extruded base elements are aluminum extruded base elements.
6 . The deformation structure according to claim 1 , wherein
the deformation base elements are shaped or injection-molded.
7 . The deformation structure according to claim 1 , wherein
the deformation control device is constructed separately from the first and second layers, and is connected thereto in a releasable or non-releasable manner.
8 . A motor vehicle comprising a deformation structure according to claim 1 , wherein the deformation structure is arranged between a vehicle outer skin element and a body carrier element.
9 . The motor vehicle according to claim 8 , wherein
the vehicle outer skin element is a bumper trim, and the body carrier element is a bumper cross-beam.
10 . A deformation structure, comprising:
at least a first layer and a second layer which are arranged spaced apart from each other in a deformation direction so as to be able to be displaced with respect to each other,
wherein the first layer and the second layer have complementary projections and recesses which are constructed such that the projections of the first layer and the recesses of the second layer and the projections of the second layer and the recesses of the first layer are introducible into each other; and
a deformation control device by which the first layer and the second layer are connected to each other such that:
(i) in an event of a high pulse in the deformation direction, the projections of the first layer are introduced into the recesses of the second layer and the projections of the second layer are introduced into the recesses of the first layer so that a deformation of the deformation structure in the deformation direction is carried out at a low force level, and
(ii) in an event of a low pulse in the deformation direction, the projections of the first layer meet the projections of the second layer so that a deformation of the deformation structure in the deformation direction is carried out at a high force level;
wherein the first layer and the second layer are formed from a large number of identical, individually produced, deformation base elements, the deformation base elements forming each layer being interconnected, wherein
the first layer comprises n deformation base elements and the second layer comprises n−1 deformation base elements.
11 . A deformation structure, comprising:
at least a first layer and a second layer which are arranged spaced apart from each other in a deformation direction so as to be able to be displaced with respect to each other,
wherein the first layer and the second layer have complementary projections and recesses which are constructed such that the projections of the first layer and the recesses of the second layer and the projections of the second layer and the recesses of the first layer are introducible into each other; and
a deformation control device by which the first layer and the second layer are connected to each other such that:
(i) in an event of a high pulse in the deformation direction, the projections of the first layer are introduced into the recesses of the second layer and the projections of the second layer are introduced into the recesses of the first layer so that a deformation of the deformation structure in the deformation direction is carried out at a low force level, and
(ii) in an event of a low pulse in the deformation direction, the projections of the first layer meet the projections of the second layer so that a deformation of the deformation structure in the deformation direction is carried out at a high force level;
wherein the first layer and the second layer are formed from a large number of identical, individually produced, deformation base elements, the deformation base elements forming each layer being interconnected, wherein
the deformation structure comprises precisely three layers which are arranged one above the other,
the first layer comprises n deformation base elements,
the second layer comprises n−1 deformation base elements, and
the third layer comprises n−2 deformation base elements.