AUTOMOBILE HYDRAULIC SHOCK ABSORBER
First Claim
1. An automobile hydraulic shock absorber comprising:
- a cylinder body including a first end portion defining one end portion in an axial direction, and a second end portion defining another end portion in the axial direction, the first end portion being connected to one of a vehicle body and a vehicle wheel;
a piston arranged to divide an inside of the cylinder body into a first oil chamber on a side of the first end portion and a second oil chamber on a side of the second end portion;
a shock absorber connecting portion connected to the other of the vehicle body and the vehicle wheel;
a piston rod attached to the shock absorber connecting portion via a damping member, the piston rod passing through the second end portion of the cylinder body from the piston and protruding to an outside of the cylinder body;
a volume adjustment mechanism arranged to push on operating oil using pressure of a high-pressure gas, thereby canceling out an excess and a deficiency of the operating oil corresponding to an increase or a decrease in volume of the piston rod during movement of the piston;
a communicating passage arranged to communicate the first oil chamber and the second oil chamber via a diaphragm; and
a pressure-applying mechanism arranged to push the piston rod toward the first end portion of the cylinder body, the pressure-applying mechanism being disposed outside the cylinder body, and movement of the pressure-applying mechanism being restricted by the shock absorber connecting portion.
1 Assignment
0 Petitions
Accused Products
Abstract
An automobile hydraulic shock absorber includes a cylinder body, a piston, an upper support, a piston rod, a volume adjustment mechanism, first and second communicating passages, and a pressure-applying mechanism. The piston rod is attached to the upper support via a rubber cushion. The volume adjustment mechanism includes a free piston. The first and second communicating passages communicate the first oil chamber and second oil chamber with each other in the cylinder body via a diaphragm. The pressure-applying mechanism is disposed outside the cylinder body, movement thereof is restricted by the upper support, and the pressure-applying mechanism pushes the piston rod downward.
36 Citations
10 Claims
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1. An automobile hydraulic shock absorber comprising:
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a cylinder body including a first end portion defining one end portion in an axial direction, and a second end portion defining another end portion in the axial direction, the first end portion being connected to one of a vehicle body and a vehicle wheel; a piston arranged to divide an inside of the cylinder body into a first oil chamber on a side of the first end portion and a second oil chamber on a side of the second end portion; a shock absorber connecting portion connected to the other of the vehicle body and the vehicle wheel; a piston rod attached to the shock absorber connecting portion via a damping member, the piston rod passing through the second end portion of the cylinder body from the piston and protruding to an outside of the cylinder body; a volume adjustment mechanism arranged to push on operating oil using pressure of a high-pressure gas, thereby canceling out an excess and a deficiency of the operating oil corresponding to an increase or a decrease in volume of the piston rod during movement of the piston; a communicating passage arranged to communicate the first oil chamber and the second oil chamber via a diaphragm; and a pressure-applying mechanism arranged to push the piston rod toward the first end portion of the cylinder body, the pressure-applying mechanism being disposed outside the cylinder body, and movement of the pressure-applying mechanism being restricted by the shock absorber connecting portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification