Torsion damper

Patent metadata

Field	Value
Publication number	US-10352393-B2
Application number	US-201715619874-A
Country	US
Kind code	B2
Filing date	Jun 12, 2017
Priority date	Jun 15, 2016
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

A craft damper (torsion damper) includes a crankshaft (shaft member) to be input with a torsion vibration, a disc member coaxially attached to the crankshaft, a ring-shaped inertia mass body connected to an outer peripheral side of the disc member via a magneto-rheological elastomer member so as to be coaxial with the crankshaft, and an electromagnetic coil for applying a magnetic field to the magneto-rheological elastomer member.

First claim

The invention claimed is:

1. A torsion damper comprising:
a shaft member to be input with a torsion vibration;
a disc member attached to the shaft member so as to be coaxial with the shaft member;
a ring-shaped inertia mass body connected to an outer peripheral side of the disc member via a magneto-rheological elastomer member so as to be coaxial with the shaft member; and
an electromagnetic coil for applying a magnetic field to the magneto-rheological elastomer member,
wherein the electromagnetic coil is a ring body formed by winding a winding wire around the shaft member, and the ring body is disposed side by side at a predetermined distance in an axial direction of the shaft member with respect to the magneto-rheological elastomer member, and
wherein a first electromagnetic coil and a second electromagnetic coil are arranged so as to sandwich the magneto-rheological elastomer member in the axial direction of the shaft member.

2. The torsion damper according to claim 1 , wherein the winding wire of the first electromagnetic coil and the winding wire of the second electromagnetic coil are configured such that currents opposite to each other in a circumferential direction flow respectively therethrough.

3. The torsion damper according to claim 1 , wherein a thickness in a radial direction of the ring body is thicker than that in the radial direction of the magneto-rheological elastomer member.

4. The torsion damper according to claim 3 , wherein a central axis of the ring body and a central axis of the magneto-rheological elastomer member are arranged coaxially.

5. A torsion damper comprising:
a shaft member to be input with a torsion vibration;
a disc member attached to the shaft member so as to be coaxial with the shaft member;
a ring-shaped inertia mass body connected to an outer peripheral side of the disc member via a magneto-rheological elastomer member so as to be coaxial with the shaft member; and
an electromagnetic coil for applying a magnetic field to the magneto-rheological elastomer member,
wherein the electromagnetic coil is formed by winding a winding wire around the shaft member, and
wherein a first electromagnetic coil and a second electromagnetic coil are arranged so as to sandwich the magneto-rheological elastomer member in the axial direction of the shaft member.

Assignees

• Honda Motor Co Ltd

Inventors

• Inoue Toshio
• Terashima Osamu

Classifications

• F16F15/1442

  with a single mass · CPC title

• F16F15/126 Primary

  consisting of at least one annular element surrounding the axis of rotation · CPC title

• F16F1/361

  comprising magneto-rheological elastomers [MR], (magneto-rheological fluid dampers F16F9/535) · CPC title

• F16F15/31

  characterised by means for varying the moment of inertia · CPC title

• F16F15/18 Primary

  using electric, {magnetic or electromagnetic} means ({suppression of vibrations of rotating systems by use of non-rotating magnetic or electromagnetic means F16F15/03;} dynamo-electric devices H02K; {control effected upon generator excitation circuit to reduce harmful effects of overloads or transients H02P9/10}) · CPC title