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1. US20200049224 - VIBRATION-DAMPING DEVICE

Office
United States of America
Application Number 16478697
Application Date 05.01.2018
Publication Number 20200049224
Publication Date 13.02.2020
Publication Kind A1
IPC
F16F 13/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
13Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
04comprising both a plastics spring and a damper, e.g. a friction damper
06the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
08the plastics spring forming at least a part of the wall of the fluid chamber of the damper
10the wall being at least in part formed by a flexible membrane or the like
CPC
F16F 13/107
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
13Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
04comprising both a plastics spring and a damper, e.g. a friction damper
06the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
08the plastics spring forming at least a part of the wall of the fluid chamber of the damper
10the wall being at least in part formed by a flexible membrane or the like
105characterised by features of partitions between two working chambers
107Passage design between working chambers
Applicants BRIDGESTONE CORPORATION
Inventors Akira UEKI
Masakazu NAGASAWA
Yuta BABA
Priority Data 2017007362 19.01.2017 JP
Title
(EN) VIBRATION-DAMPING DEVICE
Abstract
(EN)

A vibration-damping device (1) of the present invention includes an outer cylinder (11), an inner member (12), an elastic body (13), a partition member (17), an intermediate cylinder (31), and a dividing member (32). The elastic body connects together the outer cylinder and the inner member. The partition member divides a liquid chamber (14) into the outer cylinder into a main liquid chamber (15) and an auxiliary liquid chamber (16). An orifice passage (21) is formed in the partition member. The intermediate cylinder (31) is disposed between the outer cylinder and the inner member and connected to the elastic body. The partition member is connected to the intermediate cylinder and divides the main liquid chamber into a first main liquid chamber (15a) and a second main liquid chamber (15b). An accommodation chamber (37), a first communication hole (37a), and a second communication hole (37b) are formed in the partition member. A movable member (36) which is displaced or deformed in accordance with a pressure difference between the first main liquid chamber and the second main liquid chamber is accommodated in the accommodation chamber.