US 12,280,639 B2
Shading device
Bernhard Schmid, Hallbergmoos (DE); Yongpeng Xia, Beijing (CN); and Xiaofei Yang, Beijing (CN)
Assigned to Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
Appl. No. 17/915,151
Filed by Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
PCT Filed Apr. 1, 2021, PCT No. PCT/EP2021/058626
§ 371(c)(1), (2) Date Sep. 28, 2022,
PCT Pub. No. WO2021/198422, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 202010259223.5 (CN), filed on Apr. 3, 2020.
Prior Publication US 2023/0116705 A1, Apr. 13, 2023
Int. Cl. B60J 1/20 (2006.01)
CPC B60J 1/2027 (2013.01) [B60J 1/2041 (2013.01); B60J 1/2044 (2013.01); B60J 1/2052 (2013.01); B60J 1/2066 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A shading device comprising:
a shading curtain having a first shading layer and a second shading layer that respectively have at least two types of light transmission areas with different light transmission properties;
a drawing device having a first drawing member and a second drawing member, wherein the first drawing member is connected with the first shading layer and is configured to draw the first shading layer, and the second drawing member is connected with the second shading layer and is configured to draw the second shading layer; and
a driving device configured to drive the drawing device, wherein:
the driving device is an electric motor,
the first drawing member and the second drawing member are movable relative to each other between a first relative position, in which the shading curtain has a first light transmission property, and a second relative position, in which the shading curtain has a second light transmission property, wherein the first shading layer and the second shading layer parallelly move relative to each other, and
the driving device is configured to drive the drawing device such that the drawing device moves as a whole to deploy and/or retract the shading curtain, and such that the first drawing member and the second drawing member linearly move relative to each other subsequently to a deployment movement of the shading curtain.