Anti-vibration device for vehicle

Patent metadata

Field	Value
Publication number	US-9376004-B2
Application number	US-201214127247-A
Country	US
Kind code	B2
Filing date	Jun 13, 2012
Priority date	Jul 29, 2011
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

An anti-vibration device for a vehicle including a rod ( 11 ) fixed to an engine ( 1 ) at one end portion ( 12 ) thereof and fixed to a vehicle body at the other end portion ( 13 ) thereof, an inertia mass ( 15 ) supported on the rod ( 11 ), an actuator ( 17 ) operative to reciprocate the inertia mass in an axial direction of the rod, and an acceleration sensor ( 21 ) that detects vibration of the rod in the axial direction. The acceleration sensor ( 21 ) is disposed between the one end portion ( 12 ) of the rod ( 11 ) and the other end portion ( 13 ) of the rod ( 11 ). Accordingly, sensitivity to pitch vibration of the rod ( 11 ) is reduced so that accuracy in detection of rigid body resonance in the axial direction is enhanced.

First claim

What is claimed is:

1. An anti-vibration device for a vehicle, comprising:
a rod fixed to an engine at one end portion thereof and fixed to a vehicle body at the other end portion thereof;
an actuator comprising an inertia mass supported on the rod and operative to reciprocate the inertia mass in an axial direction of the rod; and
a vibration detection section configured to detect vibration of the rod in the axial direction of the rod,
wherein the vibration detection section is disposed between the one end portion of the rod and the other end portion of the rod, and is disposed on a side of the rod opposite to a side of the rod facing the engine in a leftward-rightward direction of the vehicle.

2. The anti-vibration device for a vehicle as claimed in claim 1 , wherein a space extending in a forward-rearward direction of the vehicle is provided between the vibration detection section and a surface of the rod on which the vibration detection section is disposed.

3. The anti-vibration device for a vehicle as claimed in claim 1 , wherein a ratio between rigidity of a bush disposed on the one end portion of the rod and rigidity of a bush disposed on the other end portion of the rod is set at a predetermined value, and
wherein at least one of the vibration detection section and the actuator is disposed at a node of rigid body resonance in a pitch direction of the rod.

4. The anti-vibration device for a vehicle as claimed in claim 3 , wherein the bush disposed on the one end portion of the rod and the bush disposed on the other end portion of the rod have a same shape.

5. The anti-vibration device for a vehicle as claimed in claim 1 , wherein the rod is fixedly disposed between an upper portion of the engine and the vehicle body.

6. The anti-vibration device for a vehicle as claimed in claim 1 , wherein the vibration detection section is mounted to the rod.

7. The anti-vibration device for a vehicle as claimed in claim 1 , wherein the vibration detection section is mounted to a housing that covers the rod.

8. The anti-vibration device for a vehicle as claimed in claim 1 , wherein the vibration detection section is disposed on a plane parallel with a longitudinal axis of the rod.

9. An anti-vibration device for a vehicle, comprising:
a rod fixed to an engine at one end portion thereof and fixed to a vehicle body at the other end portion thereof;
an actuator comprising an inertia mass supported on the rod and operative to reciprocate the inertia mass in an axial direction of the rod; and
means for detecting vibration of the rod in the axial direction of the rod,
wherein the means is disposed between the one end portion of the rod and the other end portion of the rod, and is disposed on a side of the rod opposite to a side of the rod facing the engine in a leftward-rightward direction of the vehicle.

Assignees

• Satou Yuusuke
• Kondo Masahiko
• Kojima Hiroshi
• Kurose Fumiharu
• Yanagida Motohiro
• Ueki Akira
• Nissan Motor
• Bridgestone Corp

Inventors

• Satou Yuusuke
• Kondo Masahiko
• Kojima Hiroshi
• Kurose Fumiharu
• Yanagida Motohiro
• Ueki Akira

Classifications

• F16F15/02

  Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems ({F16F15/005 takes precedence } ; layered products B32B; suppression of vibration in ships B63; {relieving load on bearings, using magnetic means F16C39/06}) · CPC title

• F16F7/1005

  characterised by active control of the mass · CPC title

• B60K5/04

  with the engine main axis, e.g. crankshaft axis, transversely to the longitudinal centre line of the vehicle · CPC title

• F16F1/3849 Primary

  Mounting brackets therefor, e.g. stamped steel brackets; Restraining links · CPC title

• B60K5/1208

  Resilient supports (B60K5/1241 - B60K5/1291 take precedence) · CPC title