Patent ID: 10221916

Abstract:
An anti-vibration apparatus (10) includes a first attachment member (11) having a tubular shape and connected to one of a vibration generating section and a vibration receiving section and a second attachment member (12) connected to the other section, an elastic body (13) configured to connect the attachment members to each other, and a partition member (16) configured to partition a liquid chamber in the first attachment member (11) in which a liquid is sealed into a first liquid chamber (14) and a second liquid chamber (15). At least one of the first liquid chamber (14) and the second liquid chamber (15) has the elastic body (13) at a portion of a wall surface. An intermediate chamber disposed in the partition member (16), a first communication path configured to bring the intermediate chamber and the first liquid chamber (14) in communication with each other and a second communication path configured to bring the intermediate chamber and the second liquid chamber (15) in communication with each other are formed at the partition member (16). An opening axis of a first opening section opened toward the inside of the intermediate chamber of the first communication path and an opening axis of a second opening section opened toward the inside of the intermediate chamber of the second communication path are offset from each other. At least one of the first opening section and the second opening section is opened toward the wall surface that defines the intermediate chamber. According to the anti-vibration apparatus (10), generation of strange noises can be suppressed while product characteristics are secured, and simplification of the structure and facilitation of the manufacture can be accomplished.