Anti-vibration device

An anti-vibration device, comprising:

• a cylindrical outer attachment member connected to one of a vibration generation portion and a vibration reception portion, and an inner attachment member connected to the other thereof and disposed inside of the outer attachment member;
• a pair of first main rubbers which connect the outer attachment member and the inner attachment member and are disposed at an interval in an axial direction along a central axis of the outer attachment member;
• a partition member which divides a liquid chamber between the pair of first main rubbers into a first liquid chamber and a second liquid chamber in the axial direction;
• and
• a second main rubber which divides the first liquid chamber into a third liquid chamber using the first main rubber as a part of a partition wall, and a fourth liquid chamber using the partition member as a part of the partition wall,
• wherein any two liquid chambers of the second liquid chamber, the third liquid chamber, and the fourth liquid chamber communicate with each other through a first restricted passage formed in the outer attachment member, the inner attachment member or the partition member, and a remaining one liquid chamber of the second liquid chamber, the third liquid chamber, and the fourth liquid chamber communicates with a fifth liquid chamber formed in the outer attachment member, the inner attachment member or the partition member,
• the remaining one liquid chamber is divided into liquid chambers in a circumferential direction around the central axis, and each of the liquid chambers divided in the circumferential direction and the fifth liquid chamber communicate with each other through a second restricted passage formed in the outer attachment member, the inner attachment member or the partition member, and
• the any two liquid chambers do not communicate with the remaining one liquid chamber and the fifth liquid chamber.