US 12,422,597 B2
Closure mechanism
Gerhard Viehbacher, Karlsfeld (DE)
Assigned to Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
Appl. No. 17/927,457
Filed by Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
PCT Filed May 17, 2021, PCT No. PCT/EP2021/063002
§ 371(c)(1), (2) Date Apr. 25, 2023,
PCT Pub. No. WO2021/239493, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 10 2020 113 979.9 (DE), filed on May 25, 2020.
Prior Publication US 2024/0295677 A1, Sep. 5, 2024
Int. Cl. G02B 5/00 (2006.01); F16K 3/03 (2006.01)
CPC G02B 5/005 (2013.01) [F16K 3/03 (2013.01)] 20 Claims
OG exemplary drawing
 
1. 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.