Hysteresis torque generating mechanism and power transmission device
AssigneeExedy Corporation
InventorsTakeshi Senoue, Masahiro Nakatani
Life of this patent
Estimating the term…
Abstract
A hysteresis torque generating mechanism includes a first rotor having a slide surface, and a second rotor opposed to the first rotor. The second rotor is configured to slide against the slide surface of the first rotor so as to generate a hysteresis torque. The second rotor includes an initial contact portion and a main friction surface. The initial contact portion is provided to protrude toward the first rotor. The initial contact portion is configured to slide in contact with the slide surface of the first rotor. The main friction surface is configured to slide in contact with the slide surface of the first rotor after abrasion of the initial contact portion.
Claims7
A hysteresis torque generating mechanism comprising:
- a first rotor including a slide surface;
- and
- a second rotor opposed to the first rotor, the second rotor configured to slide against the slide surface of the first rotor so as to generate a hysteresis torque, wherein
- the second rotor includes an initial contact portion and a main friction surface,
- the initial contact portion is provided to protrude toward the first rotor, the initial contact portion configured to slide in contact with the slide surface of the first rotor, and
- the main friction surface is configured to slide in contact with the slide surface of the first rotor after abrasion of the initial contact portion.
A power transmission device comprising:
- an input-side rotor;
- an output-side rotor provided to be rotatable relative to the input-side rotor;
- a plurality of elastic members configured to elastically couple the input-side rotor and the output-side rotor in a rotational direction;
- and
- a hysteresis torque generating mechanism configured to generate a hysteresis torque in relative rotation between the input-side rotor and the output-side rotor, wherein
- the hysteresis torque generating mechanism includes
- a friction member disposed axially between the input-side rotor and the output-side rotor, and
- a pressing member configured to press a first lateral surface of the friction member onto a rotor lateral surface of either the input-side rotor or the output-side rotor, and
- the friction member includes
- an initial contact portion provided to axially protrude from the first lateral surface, the initial contact portion configured to slide in contact with the rotor lateral surface of either the input-side rotor or the output-side rotor, and
- a main friction surface configured to slide in contact with the rotor lateral surface of either the input-side rotor or the output-side rotor after abrasion of the initial contact portion.
Dependencies are inferred from the claim text.