US 11,850,903 B1
Vehicle height adjuster
Jae Hun Kim, Hwaseong-Si (KR); and Hee Hoon Son, Suwon-Si (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed on Oct. 31, 2022, as Appl. No. 17/977,997.
Claims priority of application No. 10-2022-0080518 (KR), filed on Jun. 30, 2022.
Int. Cl. B60G 17/015 (2006.01); B60G 11/08 (2006.01)
CPC B60G 17/015 (2013.01) [B60G 11/08 (2013.01); B60G 2500/30 (2013.01); B60G 2800/914 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A vehicle height adjuster apparatus, comprising:
an actuator provided to form vertical linear displacement between a leaf spring and a suspension arm;
a power source connected to the actuator and configured to provide power to drive the actuator;
a vehicle height sensor provided to detect a change in a height of the suspension arm relative to a vehicle body; and
a controller connected to the vehicle height sensor and the power source and configured to receive a signal from the vehicle height sensor and to control the power source to drive the actuator,
wherein the actuator includes a hydraulic cylinder provided between the leaf spring and the suspension arm,
wherein the power source includes a hydraulic pump configured to generate hydraulic pressure to be provided to the hydraulic cylinder,
wherein the hydraulic cylinder includes:
a cylinder fixed to the suspension arm; and
a piston slidably mounted in the cylinder, configured for linear sliding up and down in the cylinder and provided with a spring seat for supporting an end portion of the leaf spring on an upper side of the piston,
wherein at least one protruding end portion is provided on an external circumferential surface of the piston, and
wherein a cylinder cover is provided on an upper side of the cylinder to restrict the at least one protruding end portion from being separated from the cylinder while guiding the linear sliding of the piston.