Patent ID: 9200694
Filing Date: 2015-12-01
Classification: F16F

Abstract:
1. A vibration damping device comprising: an inside attachment member that is coupled to one section out of a vibration generation section or a vibration receiving section; an outer peripheral member that is coupled to the other section out of the vibration generation section or the vibration receiving section, that is disposed so as to surround the outer periphery of the inside attachment member as viewed along a main vibration input direction, and that comprises an upper segment and a lower segment that are segmented in the main vibration input direction; an elastic body that is disposed between the inside attachment member and the outer peripheral member, and that elastically connects together the inside attachment member and the outer peripheral member; a first main liquid chamber that is configured at the inside of the outer peripheral member and at the lower segment side and main vibration input direction outside of the inside attachment member, that comprises an internal wall having at least a portion configured by the elastic body, and that is filled with liquid; an auxiliary liquid chamber that is filled with liquid and comprises a dividing wall having a portion formed by a diaphragm such that the auxiliary liquid chamber internal volume is capable of expanding and contracting in response to liquid pressure changes; a first restriction path that places the first main liquid chamber and the auxiliary liquid chamber in communication with each other and that enables liquid through flow; a liquid chamber that is disposed between the inside attachment member and the outer peripheral member as viewed along the main vibration input direction, that has the elastic body partitioning between the liquid chamber and the first main liquid chamber, and that is filled with liquid; a partitioning wall that is integrally formed to the elastic body, and that partitions the liquid chamber into a plurality of second main liquid chambers disposed around the outer circumferential direction of the inside attachment member; a positioning member that is disposed between the upper segment and the lower segment of the outer peripheral member, and that performs positioning between the upper segment and the lower segment in the main vibration input direction such that the partitioning wall is in a compressed state in the main vibration input direction; a retaining member configured in a cylinder shape that retains the upper segment and the lower segment positioned by the positioning member inside the retaining member; and a second restriction path that enables liquid to flow between the plurality of second main liquid chambers, or between each of the second main liquid chambers and the auxiliary liquid chamber, wherein