Vibration-damping device

A vibration-damping device comprising:

• a tubular first attachment member that is coupled to any one of a vibration generating part and a vibration receiving part and a second attachment member that is coupled to the other of the vibration generating part and the vibration receiving part;
• an elastic body that elastically couples both the attachment members to each other;
• a partition member that partitions a liquid chamber in the first attachment member in which a liquid is enclosed into a main liquid chamber having the elastic body as a portion of a partition wall and an auxiliary liquid chamber in an axial direction along a central axis of the first attachment member;
• and
• a movable member that is deformably or displaceably accommodated in an accommodation chamber provided in the partition member,
• wherein the partition member is provided with an orifice passage that allows the main liquid chamber and the auxiliary liquid chamber to communicate with each other, a plurality of first communication holes that allow the main liquid chamber and the accommodation chamber to communicate with each other, and a second communication hole that allows the auxiliary liquid chamber and the accommodation chamber to communicate with each other,
• a plurality of tubular members that protrude in the axial direction toward the elastic body are disposed on a first wall surface of the partition member to which the first communication holes are open and which constitutes a portion of an inner surface of the main liquid chamber,
• the plurality of tubular members have different inner diameters and outer diameters and are provided in a multiple manner such that one tubular member surrounds an another tubular member from an outer side in a radial direction,
• the first wall surface has an inner portion located inside a first tubular member located on an innermost side in the radial direction and an outer portion located outside a second tubular member located on an outermost side in the radial direction, among the plurality of tubular members, and
• the plurality of first communication holes are open to both the inner portion and the outer portion.