Closure mechanism
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorGerhard Viehbacher
Life of this patent
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Abstract
A closure mechanism for an opening defined by a center and an outer edge, includes multiple segments which can all together close the opening. Each segment has a first pivot lever and a second pivot lever and is controlled by the pivoting movements thereof. The segment along with its pivot levers forms a four-bar linkage. All first pivot levers are attached to a first base and all second pivot levers are attached to a second base. The relative movement between the first base and the second base leads to a drive movement for the pivot levers, wherein the second pivot lever is mechanically coupled to the first base via a cam gearing mechanism.
Claims20
A closure mechanism for an opening that is defined by a center and an outer periphery, comprising:
- a plurality of segments which, in a closed position when moved to the center, conjointly close the opening and, in an open position when moved to the outer periphery, conjointly release the opening;
- a plurality of first and second pivoting levers;
- and
- a first and a second base, wherein
- each of the plurality of segments is a central part of a dedicated four bar linkage and has a first and a second articulation point;
- each first pivoting lever, which is pivotably attached to the first base outside the outer periphery, is attached to the first articulation point so as to be pivotable on the assigned segment;
- and
- each second pivoting lever, which by way of a cam mechanism is mechanically coupled in a movable manner to the first base and is pivotably attached to the second base outside the outer periphery, is attached to the second articulation point on the assigned segment;
- and
- the first base and the second base are movable relative to one another, and the relative movement forms a driving movement for the plurality of first and second pivoting levers.
Dependencies are inferred from the claim text.