公开(公告)号：EP4450304A1

公开(公告)日：2024-10-23

申请号：EP22907232.7

申请日：2022-12-01

Applicant: NHK Spring Co., Ltd.

Inventor： TANAKA Yusuke ,  HAYASHI Takanori ,  IINO Shinji ,  SANO Takamichi

IPC: B60G11/44

Abstract: A suspension device (1) includes a pair of leaf springs (11) which extend in a front-rear direction, are disposed to be spaced apart from each other in a left-right direction, are attached to a vehicle body (B1), and are configured to support an axle (W), and a torsion bar (12) which extends in the front-rear direction, and of which one of a front end portion and a rear end portion is supported by the axle in a state where movement in the front-rear direction and the left-right direction is restricted, in which one of a front end portion and a rear end portion of the leaf spring is connected to the vehicle body to be rotatable around a first axis (O1) extending in the left-right direction, and the other of the front end portion and the rear end portion of the leaf spring is connected to the vehicle body to be swingable in the front-rear direction around an axis extending in the left-right direction, and the other of the front end portion and the rear end portion of the torsion bar is supported by the vehicle body to be movable in the front-rear direction in a state where movement in the left-right direction is restricted.

公开(公告)号：EP4431317A1

公开(公告)日：2024-09-18

申请号：EP22892673.9

申请日：2022-11-01

Applicant: NHK Spring Co., Ltd.

Inventor： TANAKA Yusuke ,  HAYASHI Takanori ,  IINO Shinji ,  SANO Takamichi

IPC: B60G11/04 ,  B60G11/10 ,  F16F1/18 ,  F16F1/22 ,  F16F15/073

CPC classification number: B60G11/04 ,  F16F15/073 ,  F16F1/22 ,  B60G11/10 ,  F16F1/18

Abstract: A leaf spring device (1) includes a leaf spring main body (11), a first eye portion (12), a second eye portion provided (13), and a connection piece (14), the first eye portion is connected to a vehicle body (B1) to be rotatable around a first axis (01) extending in a width direction of the leaf spring main body, the second eye portion is connected to the connection piece to be rotatable around a second axis (O2) extending in the width direction, a central region of the leaf spring main body in the longitudinal direction supports an axle, the leaf spring main body is provided to be flexibly deformable upward, and a connection portion (11a) of the leaf spring main body, at which the leaf spring main body is connected to the second eye portion, is urged by an elastic restoring force of the connection piece in a direction (x 1) in which the connection portion is displaced along the longitudinal direction at an initial stage of a process in which the leaf spring main body is flexibly deformed upward.