US 12,134,439 B2
Tilting suspension for a vehicle
Machiel Gerardus Theodorus Marie Barenbrug, Amsterdam (NL); Alexander Plul Johannus De Visser, Amsterdam (NL); and Pel Ariesen, Amsterdam (NL)
Assigned to YOUSEE B.V., Amsterdam (NL)
Appl. No. 17/053,838
Filed by YOUSEE B.V., Amsterdam (NL)
PCT Filed May 7, 2019, PCT No. PCT/EP2019/061674
§ 371(c)(1), (2) Date Nov. 9, 2020,
PCT Pub. No. WO2019/215144, PCT Pub. Date Nov. 14, 2019.
Claims priority of application No. 2020889 (NL), filed on May 8, 2018.
Prior Publication US 2021/0229774 A1, Jul. 29, 2021
Int. Cl. B62K 25/26 (2006.01); B62J 43/13 (2020.01); B62K 5/00 (2013.01); B62K 5/027 (2013.01); B62K 5/06 (2006.01); B62M 6/40 (2010.01); B62M 6/90 (2010.01)
CPC B62K 25/26 (2013.01) [B62J 43/13 (2020.02); B62K 5/027 (2013.01); B62K 5/06 (2013.01); B62M 6/40 (2013.01); B62M 6/90 (2013.01); B62K 2005/001 (2013.01); B62K 2201/00 (2013.01); B62K 2202/00 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A tiltable vehicle, comprising:
a vehicle frame;
one front wheel;
two rear wheels;
two swing arms, each of the swing arms being pivotably coupled to a pivot point on the vehicle frame at a first end, and coupled to one of the rear wheels at an opposing end;
a rocker arm rotatably arranged around a rotational axis lying in a plane of symmetry of the vehicle frame;
two linkages, each of the linkages being coupled at a first end to one of the swing arms at the pivot point, wherein the linkages are coupled at an angle to the swing arms;
two connection arms, each being arranged between a second end of one of the linkages and one outer end of the rocker arm;
wherein each of the connection arms comprises a resilient member, the resilient member comprising a number of Belleville springs arranged in at least two groups of rings so as to create a non-linear spring characteristic,
wherein the non-linear spring characteristic is continuously increasing with increasing spring stroke, and
wherein a derivative of the non-linear spring characteristic comprises an increasing stair case function.