US 12,129,904 B2
Vibration-damping device
Rei Mikoshiba, Tokyo (JP); Yuki Satake, Tokyo (JP); and Akira Ueki, Tokyo (JP)
Assigned to Prospira Corporation, Kawasaki (JP)
Appl. No. 17/772,196
Filed by Prospira Corporation, Kawasaki (JP)
PCT Filed Oct. 13, 2020, PCT No. PCT/JP2020/038572
§ 371(c)(1), (2) Date Apr. 27, 2022,
PCT Pub. No. WO2021/090645, PCT Pub. Date May 14, 2021.
Claims priority of application No. 2019-202583 (JP), filed on Nov. 7, 2019.
Prior Publication US 2022/0403911 A1, Dec. 22, 2022
Int. Cl. F16F 13/10 (2006.01); B60K 5/12 (2006.01)
CPC F16F 13/107 (2013.01) [B60K 5/1208 (2013.01); B60K 5/1283 (2013.01); F16F 2228/06 (2013.01); F16F 2230/186 (2013.01); F16F 2230/36 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A vibration-damping device comprising:
a first mounting member that has a tubular shape and is connected to any one of a vibration-generating portion and a vibration-receiving portion, and a second mounting member connected to the other of the vibration-generating portion and the vibration-receiving portion;
an elastic body which elastically connects both the first mounting member and the second mounting member;
a partition member which partitions a liquid chamber in which a liquid is sealed in the first mounting member into a main liquid chamber having the elastic body in a part of a partition wall of the main liquid chamber and an auxiliary liquid chamber, in an axial direction along a central axis of the first mounting member; and
a movable member which is accommodated in an accommodation chamber, the accommodation chamber being provided in the partition member to be deformable or displaceable,
wherein the partition member includes an orifice passage through which the main liquid chamber and the auxiliary liquid chamber communicate with each other, a plurality of first communication holes through which the main liquid chamber and the accommodation chamber communicate with each other, and a second communication hole through which the auxiliary liquid chamber and the accommodation chamber communicate with each other,
in the partition member, a tubular member which protrudes in the axial direction toward the elastic body is disposed on a first wall surface in which the plurality of first communication holes open and which forms a part of an inner surface of the main liquid chamber,
the plurality of first communication holes open in both an inner portion located on an inner side than the tubular member and an outer portion located on an outer side than the tubular member of the first wall surface,
two or more of the plurality of first communication holes open on the inner side, and
a part of the first communication hole and a part of the second communication hole face each other in the axial direction via the movable member.