US 2012/0238368 A1Published application

Torsional shock absorbing apparatus

AssigneeToyota Jidosha Kabushiki Kaisha

InventorShinichiro Watarai

Life of this patent

Estimating the term…

Loading patent…

Abstract

To provide a torsional shock absorbing apparatus which can obtain a non-linear torsional characteristic having a large torsion angle of a driving rotation member and a driven rotation member, and can prevent an extremely large torque from being transmitted to the driven rotation member. The torsional shock absorbing apparatus comprises a boss, a cam member provided on the boss to be integrally rotated with the boss and having a cam surface formed in an oval shape, and an arm member disposed between the cam member and a coil spring to transmit the rotation torque of the disc plates to the boss. The arm member has one end portion held in contact with the cam surface and the other end portion held in engagement with circumferential one end portion of the coil spring, and is swingable around the center of a pin provided on the disc plates.

Claims7

Dependent claims

A torsional shock absorbing apparatus, comprising:

a driving rotation member inputted with a rotational torque,
a driven rotation member disposed in coaxial relationship with the driving rotation member to output the rotational torque of the driving rotation member, and at least one or more resilient members provided between the driving rotation member and the driven rotation member to be compressed in the circumferential direction of the driving rotation member when the driving rotation member and the driven rotation member are relatively rotated with each other,
a cam member having a cam surface formed in an oval shape and provided at one of the driving rotation member and the driven rotation member to be integrally rotated with the one of the driving rotation member and the driven rotation member, and
at least one or more torque transmission members each disposed between the cam member and the resilient member to transmit the rotational torque of the driving rotation member to the driven rotation member.

1 more element

Dependencies are inferred from the claim text.