Vibration damping bushing
AssigneeNissan Motor Co., Ltd.
InventorKenzo Ueno
Life of this patent
Estimating the term…
Abstract
A vibration damping bushing having an energy absorbing sleeve positioned about an inner sleeve and within an outer sleeve. The energy absorbing sleeve has first and second cavities positioned diametrically opposed along the axis of force applied to the bushing, and has a connecting passageway interconnecting the cavities, these cavities containing a vibration damping fluid. The passageways serve as restrictive flow orifices to restrict the flow of the fluid between the cavities, and to thereby dampen the vibration of the outer sleeve with respect to the inner sleeve.
Claims9
A vibration damping bushing comprising:
- (a) an outer cylindrical sleeve;
- (b) an inner cylindrical sleeve;
- (c) an energy absorbing sleeve positioned about said inner sleeve and within said outer sleeve, said energy absorbing sleeve having first and second cavities positioned diametrically opposed from each other along the axis of force applied to said bushing, and having a connecting passageway interconnecting said cavities, and a vibration damping fluid contained within said cavities, whereby said passageway serves as a restrictive flow orifice to restrict the flow of the fluid between said cavities, to thereby dampen the vibration of said outer sleeve with respect to said inner sleeve;
- and
- (d) a fourth sleeve mounted within said outer sleeve to form a fluid-tight seal between said outer sleeve and said energy absorbing sleeve to thereby fluid-seal said cavities and interconnecting passageway from said outer sleeve.
An automotive vehicle drive axle vibration absorbing stabilizing system for stabilizing the drive axle with respect to the vehicle body, said system comprising:
- (a) a first bracket connected to the axle;
- (b) a second bracket connected to the axle;
- (c) a first link connecting said first bracket to the vehicle body;
- and
- (d) a second link connecting said second bracket to the vehicle body,
- wherein each of said links is formed with a vibration damping bushing, comprising:
- (a) an outer cylindrical sleeve;
- (b) an inner cylindrical sleeve;
- and
- (c) an energy absorbing sleeve positioned about said inner sleeve and within said outer sleeve, said energy absorbing sleeve having first and second cavities positioned diametrically opposed from each other along the axis of said link, and having a connecting passageway interconnecting said cavities, and a vibration damping fluid contained within said cavities, whereby said passageway serves as a restrictive flow orifice to restrict the flow of fluid between said cavities, to thereby dampen the vibration of said link with respect to said inner sleeve;
- and
- (d) a fourth sleeve mounted within said outer sleeve to form a fluid-tight seal between said outer sleeve and said energy absorbing sleeve to thereby fluid-seal said cavities and interconnecting passageway from said outer sleeve.
Dependencies are inferred from the claim text.