Title:
LEAF SPRING DEVICE
Document Type and Number:
Japanese Patent JP2023071307
Kind Code:
A
Abstract:
To suppress a spring constant developed by a leaf spring device low at first, and then to increase the same when warp deformation of a leaf spring body progresses while suppressing weight and costs in a process where the leaf spring body warps upward and is deformed.SOLUTION: A leaf spring device includes: a leaf spring body 11; a first spring eye 12 and a second spring eye 13; and a connection piece 14. The first spring eye is connected to a vehicle body B1 so that it can rotate around a first shaft line O1 extending in a width direction Y of the leaf spring body. The second spring eye is connected to the connection piece so that it can rotate around a second shaft line O2 extending in the width direction. A center part area in the longitudinal direction X in the leaf spring body supports an axle. The leaf spring body is provided so that it can warp upward and is deformed. In the process that the leaf spring body warps upward and is deformed, a connection part 11a to the second spring eye in the leaf spring body is energized by an elastic restoration force of the connection piece in the direction x1 displaced in a longitudinal direction.SELECTED DRAWING: Figure 1
Inventors:
TANAKA YUSUKE
HAYASHI TAKANORI
IINO SHINJI
SANO TAKAMITSU
HAYASHI TAKANORI
IINO SHINJI
SANO TAKAMITSU
Application Number:
JP2021183979A
Publication Date:
May 23, 2023
Filing Date:
November 11, 2021
Export Citation:
Assignee:
NHK SPRING CO LTD
International Classes:
B60G11/10; B60G11/04; F16F1/18; F16F1/22; F16F15/073
Attorney, Agent or Firm:
Sumio Tanai
Yasushi Matsunuma
Norihiko Ara
Hiroki Ninai
Yasushi Matsunuma
Norihiko Ara
Hiroki Ninai