US 7,581,299 B2Granted

Method of assembling a damper unit

AssigneeAisin Aw Co., Ltd.

InventorsYoshio Kintou, Yoshihiko Sasaki

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Abstract

The invention eliminates the need of handling an engine in a process for assembling a torsion damper which couples the engine with a power transmission system and a torque limiter. In a damper unit with a torque limiter positioned between an output shaft of an engine and a power transmission shaft of a power transmission system, the damper unit includes a fly wheel damper, a torsion damper and a torque limiter. The torque limiter of the damper unit is coupled to the torsion damper with a set load applied thereto such that the torque limiter and the torsion damper are combined to form an assembly. The torsion damper and the torque limiter can be assembled by handling, independently of the engine, only components which are smaller and lighter than an engine. This improves the efficiency of the assembling operation of the damper unit with the torque limiter.

Claims9

Dependent claims

A method of assembling a damper unit which is interposed between an output member of an engine and a power transmission shaft, the damper unit comprises a torque limiter including a pair of plates, a friction member, and an urging device that presses at least one of the pair of plates so that the friction member is sandwiched by the pair of plates, the method comprising:

forming an assembly by coupling, with a set load, the torque limiter to a torsion damper;
and
coupling the assembly to the output member of the engine, wherein:
the pair of plates are coupled to each other such that the pair of plates do not rotate relative to each other but are able to move relative to each other in an axial direction,
the urging device presses the at least one of the pair of plates in the axial direction,
the torque limiter is structured to release an excessive torsion force through slippage between shafts under a predetermined set load constantly applied, and
the urging device presses the pair of plates in a fixed state such that the urging device cannot move in the axial direction to release.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/090,842Filed 25 Mar 2005 · division
Priority: JP 2001-19285426 Jun 2001
Published: US 2005/0160596 A128 Jul 2005
Granted: 1 Sep 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

F16F 15/1297
Characterised by friction-damping means: overload protection, i.e. means for limiting torque
F16D 7/025
With axially applied torque limiting friction surfaces: with flat clutching surfaces, e.g. discs
Y10T 29/49231
Prime mover or fluid pump making: i.C. [internal combustion] engine making
Y10T 29/49872
Elastic joining of parts: confining elastic part in socket

Family

Application10/170,633Parent of this division · filed 14 Jun 2002
US 2005/0160596 A1Pre-grant publication · published 28 Jul 2005
US 7,238,111 B2Parent of this division
US 2002/0194949 A1Published application
US 7,581,299 B2This patent

From the US filing history. Foreign family members aren’t listed.