Power transmission device

Patent metadata

Field	Value
Publication number	US-12038059-B2
Application number	US-202318340718-A
Country	US
Kind code	B2
Filing date	Jun 23, 2023
Priority date	Jul 28, 2022
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

A power transmission device includes a flywheel, a torque limiter unit, and a damper unit. The torque limiter unit includes first and second side plates and a friction plate. The first side plate is attached to the flywheel. The first side plate is disposed on a first axial side to the flywheel. The friction plate is disposed axially between the first side plate and the second side plate. The damper unit includes input rotational bodies, an output plate, and an elastic member. The output plate is disposed axially between the first side plate and the flywheel.

First claim

What is claimed is:

1. A power transmission device, comprising:
a flywheel;
a torque limiter unit attached to the flywheel; and
a damper unit attached to the torque limiter unit,
wherein the torque limiter unit includes
a first side plate attached to the flywheel and disposed on a first axial side with respect to the flywheel;
a second side plate configured to rotate integrally with the first side plate and disposed on a second axial side with respect to the first side plate; and
a friction plate disposed axially between the first side plate and the second side plate, and

the damper unit includes
an input rotational body configured to rotate integrally with the friction plate;
an output plate disposed axially between the first side plate and the flywheel, the output plate disposed to be rotatable relative to the input rotational body, and
an elastic member elastically coupling the input rotational body and the output plate.

2. The power transmission device according to claim 1 , wherein the first side plate includes an outer circumferential portion and an inner circumferential portion disposed on the first axial side with respect to the outer circumferential portion.

3. The power transmission device according to claim 1 , wherein
the flywheel includes a body portion and an attachment portion disposed radially outward of the body portion and protruding toward the first axial side from the body portion,
the first side plate is attached to the attachment portion, and
the output plate is disposed between the first side plate and the body portion.

4. The power transmission device according to claim 3 , wherein the flywheel includes a protruding portion disposed radially outward of the attachment portion and protruding toward the first axial side with respect to the attachment portion.

5. The power transmission device according to claim 1 , wherein the input rotational body includes a first input plate to which the friction plate is attached and a second input plate disposed on the second axial side with respect to the first input plate and configured to rotate integrally with the first input plate.

6. The power transmission device according to claim 1 , wherein an outer diameter of the output plate is the same as an inner diameter of the first side plate.

7. The power transmission device according to claim 1 , wherein the friction plate is a separate member from the first input plate.

8. The power transmission device according to claim 1 , wherein the first side plate is disposed such that an inner circumferential surface of the first side plate does not face an outer circumferential surface of the output plate.

Assignees

• Exedy Corp

Inventors

• Hagihara Yoshiyuki

Classifications

• F16D13/505

  Devices located between the flywheel and the driven disc, and biassing the driven disc away from the flywheel towards the disengaged position · CPC title

• F16F15/315

  characterised by their supporting arrangement, e.g. mountings, cages, securing inertia member to shaft (F16F15/31 takes precedence) · CPC title

• F16F15/30

  Flywheels (F16F15/16, F16F15/28 take precedence; suppression of vibrations in rotating systems using elastic members or friction-damping members moving with the system, {i.e. split flywheels or single masses connected to a hub by elastic members or friction-damping members} F16F15/12; rotary-body aspects in general F16C13/00, F16C15/00) · CPC title

• F16F15/1232

  characterised by the spring mounting (F16F15/12306, F16F15/12313 take precedence) · CPC title

• F16F15/1397 Primary

  Overload protection, i.e. means for limiting torque · CPC title