Vibration damping device

A vibration damping device comprising:

• a tubular first attachment member coupled to any one of a vibration generating part and a vibration receiving part, and a second attachment member coupled to the other thereof;
• an elastic body coupling both of the attachment members;
• and
• a partitioning member that partitions a liquid chamber within the first attachment member having a liquid enclosed therein into a first liquid chamber and a second liquid chamber,
• wherein at least one of the first liquid chamber and the second liquid chamber has the elastic body on a portion of a wall surface thereof,
• wherein the partitioning member is provided with a vortex chamber unit that communicates with the first liquid chamber and the second liquid chamber,
• wherein the vortex chamber unit includes a vortex chamber communicating with one liquid chamber through a laminar flow path and communicating with the other liquid chamber through a communication hole, of both the liquid chambers,
• wherein the laminar flow path is opened into the vortex chamber from inner peripheral surfaces that face in radial directions of the vortex chamber being aimed in circumferential directions of the vortex chamber among wall surfaces defining the vortex chamber,
• wherein the communication hole is opened into the vortex chamber from an end surface that faces in a direction of center axis of the vortex chamber being aimed in the direction of the center axis among the wall surfaces defining the vortex chamber,
• wherein blocking members extending in the direction of the center axis so as to surround the communication hole from an outside in the radial direction are provided within the vortex chamber,
• wherein the blocking members are provided with flow openings penetrating the blocking members, and
• wherein the vortex chamber form circulating flows of a liquid according to a flow speed of the liquid flowing in from the laminar flow path and allows the liquid to flow out from the communication hole through the flow openings.