Vibration reduction shaft

Patent metadata

Field	Value
Publication number	US-11118621-B2
Application number	US-201816126600-A
Country	US
Kind code	B2
Filing date	Sep 10, 2018
Priority date	Oct 30, 2017
Publication date	Sep 14, 2021
Grant date	Sep 14, 2021

Abstract

A vibration reduction shaft includes a cylindrical outer shaft having an inner hollow portion, in which the outer shaft includes: a first member ( 110 ) and a second member ( 120 ) which are disposed to be spaced apart from each other in a longitudinal direction of the shaft; and a vibration reduction region ( 150 ) which is disposed between the first member and the second member, and multiple connecting members ( 151 ), which connect the first member and the second member in an axial direction, are disposed to be spaced apart from one another within the vibration reduction region.

First claim

What is claimed is:

1. A vibration reduction shaft comprising:
a cylindrical outer shaft having an inner hollow portion,
wherein the outer shaft includes:
a first member and a second member which are disposed to be spaced apart from each other in a longitudinal direction of the shaft; and
a vibration reduction region which is disposed between the first member and the second member, and
multiple connecting members, which connect the first member and the second member in an axial direction, are disposed to be spaced apart from one another within the vibration reduction region,
wherein a first stopper, which has one end attached to the first member and the other end formed with a protrusion, and a second stopper, which has one end attached to the second member and the other end formed with a groove that accommodates the protrusion, are disposed between each of the multiple connecting members and within the vibration reduction region.

2. The vibration reduction shaft according to claim 1 , wherein one end of the connecting member is integrally coupled to any one of the first and second members, and the other end of the connecting member is coupled to the other of the first and second members through a damping material.

3. The vibration reduction shaft according to claim 1 , wherein the other end of the first stopper and the other end of the second stopper are spaced apart from each other at a predetermined interval d.

4. The vibration reduction shaft according to claim 1 , wherein a bevel gear is mounted on the outer shaft.

Assignees

• Korea Aerospace Res Inst

Inventors

• Kim Dae Kwan

Classifications

• F16C3/023 Primary

  made of several parts, e.g. by welding · CPC title

• F16H57/0006

  Vibration-damping or noise reducing means specially adapted for gearings (devices for varying tension of belts, ropes or chains with damping means F16H7/0829; toothed members with construction providing vibration damping F16H55/14; reducing vibrations or noise of the gearbox casing F16H57/028; suppression of vibrations or noise of gear selectors F16H59/0208; control of hydrostatic fluid gearing preventing or reducing vibrations or noise F16H61/4183) · CPC title

• F16H1/14

  comprising conical gears only · CPC title

• F16F15/1215

  Leaf springs, e.g. radially extending · CPC title

• F16C2361/61

  Toothed gear systems, e.g. support of pinion shafts · CPC title