VIBRATION ISOLATOR

摘要

A vibration isolator includes a partition member (15) that partitions a liquid chamber (16) in a first mounting member (11) into a primary liquid chamber (16a) using an elastic body (13) as a part of a wall surface thereof and a secondary liquid chamber (16b), and a movable member (23) housed in a housing chamber (20) provided within the partition member (15), the movable member being free to be deformed or displaced in an axial direction of the first mounting member (11). The partition member (15) is provided with a plurality of communicating holes (22) that extend from a portion of the partition member (15) which is exposed to the primary or secondary liquid chamber (16a or 16b) toward the inside of the partition member and are open toward the movable member (23). The partition member (15) is equipped with partition plate parts (18 and 19) of which front and back surfaces are directed in the axial direction of the first mounting member, the partition plate parts dividing the housing chamber (20) from the primary and dividing the housing chamber from secondary liquid chamber (16a or 16b). The communicating holes (22) include communicating pores (24) which pass through the partition plate parts (18 and 19), and each of which has an inner diameter of 3.6 mm or less.

主权项

1. A vibration isolator comprising:
a first mounting member having a tubular shape and connected to one of a vibration generator and a vibration absorber, and a second mounting member connected to the other of the vibration generator and the vibration absorber; an elastic body configured to connect the first and second mounting members; a partition member disposed within the first mounting member and configured to partition a liquid chamber within which a liquid is enclosed into a primary liquid chamber using the elastic body as a part of a wall surface thereof and a secondary liquid chamber; and a movable member housed in a housing chamber provided within the partition member, the movable member being free to be deformed or displaced in an axial direction of the first mounting member, wherein the partition member is provided with a plurality of communicating holes that extend from a portion of the partition member which is exposed to the primary liquid chamber or the secondary liquid chamber toward an inside of the partition member and are open toward the movable member, the partition member is equipped with partition plate parts of which front and back surfaces are directed in the axial direction of the first mounting member, the partition plate parts dividing the housing chamber from the primary liquid chamber and dividing the housing chamber from the secondary liquid chamber, the communicating holes include communicating pores that pass through the partition plate parts, and each of the communicating pores has an inner diameter of 3.6 mm or less wherein the inner diameter is a shortest transverse distance of the communicating pore on a straight line perpendicular to the axial direction of the first mounting member.