The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 09, 2021
Filed:
Aug. 03, 2018
Mazda Motor Corporation, Hiroshima, JP;
Haruaki Iseri, Hiroshima, JP;
Tetsuya Shirosaka, Hatsukaichi, JP;
MAZDA MOTOR CORPORATION, Hiroshima, JP;
Abstract
Provided is a vehicle suspension device capable of obtaining excellent steering stability and good riding comfort in conformity to a tire longitudinal spring constant. The suspension device () comprises: an upper arm (); a lower arm (); a wheel support (); and a shock absorber () having an upper end attached to a vehicle body (B) of a vehicle and a lower end attached to the lower arm, wherein the upper arm and the lower arm are arranged such that a ratio ζof a scuff change-based apparent damping coefficient Cto a critical damping coefficient Cof the suspension device becomes equal to or greater than a lower limit, under the condition that the vehicle is traveling straight ahead on a flat road at a given vehicle speed, wherein the scuff change-based apparent damping coefficient Cis obtained by dividing, by a stroke speed of a wheel, an up-down directional component of a vehicle width-directional force arising on a ground contact surface of the wheel due to a vehicle width-directional displacement of the wheel occurring along with a stroke of the wheel, and the lower limit is set such that it becomes larger as a tire longitudinal spring constant of the wheel becomes smaller.