Anti-vibration device
AssigneeBridgestone Corporation
InventorHiroshi Kojima
Life of this patent
Estimating the term…
Abstract
An anti-vibration device includes: a cylinder body coupled to a vibration receiver; a support body coupled to a vibration source; an elastic body that attaches the support body to the cylinder body such that the support body is capable of moving relative to the cylinder body; a first liquid chamber sectioned by an orifice pathway and the elastic body; a second liquid chamber that a liquid flows to and from the first liquid chamber through the orifice pathway; a first gas chamber with a wall configured by a diaphragm; a second gas chamber capable of communicating with the first gas chamber; and a switching section that switches a state of communication of the first gas chamber and the second gas chamber.
Claims6
An anti-vibration device comprising:
- a cylinder body coupled to one of a vibration source or a vibration receiver;
- a support body coupled to the other of the vibration source or the vibration receiver;
- an elastic body attaching the support body to the cylinder body such that the support body is capable of moving relative to the cylinder body;
- a first liquid chamber housing a liquid and provided between the elastic body and a pathway member that is formed within the cylinder body;
- a second liquid chamber provided between the pathway member and a diaphragm that partitions an interior of the cylinder body, a liquid flowing between the first liquid chamber and the second liquid chamber through a pathway that is formed by the pathway member;
- a first gas chamber provided on an opposite side of the diaphragm from the second liquid chamber;
- a second gas chamber isolated from the first gas chamber;
- and
- a switching section switching between a state of communication and a state of non-communication between the first gas chamber and the second gas chamber,
- wherein the diaphragm does not configure a wall of the second gas chamber, and the second gas chamber is only communicable with the first gas chamber.
An anti-vibration device comprising:
- a cylinder body coupled to one of a vibration source or a vibration receiver;
- a support body coupled to the other of the vibration source or the vibration receiver;
- an elastic body attaching the support body to the cylinder body such that the support body is capable of moving relative to the cylinder body;
- a first liquid chamber housing a liquid and provided between the elastic body and a first membrane that partitions an interior of the cylinder body;
- a first gas chamber provided between the first membrane and a first partitioning wall of a pathway member that partitions the interior of the cylinder body;
- a second liquid chamber provided between the first partitioning wall and a second membrane that partitions the interior of the cylinder body, a liquid flowing between the first liquid chamber and the second liquid chamber through a pathway formed by the pathway member;
- a deformation space provided between the second membrane and a second partitioning wall that partitions the interior of the cylinder body, the deformation space forming a deformable region where the second membrane deforms;
- a second gas chamber isolated from the first gas chamber;
- and
- a switching section switching between a state of communication and a state of non-communication between the first gas chamber and the second gas chamber,
- wherein the second membrane does not configure a wall of the second gas chamber.
Dependencies are inferred from the claim text.