Vibration-damping device

Patent metadata

Field	Value
Publication number	US-10428890-B2
Application number	US-201615576017-A
Country	US
Kind code	B2
Filing date	Mar 9, 2016
Priority date	May 28, 2015
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

A vibration-damping device ( 1 ) of the present invention includes a tubular first attachment member ( 11 ), a second attachment member ( 12 ) that is attached to any one of a vibration generating portion and a vibration receiving portion, an elastic body ( 13 ) that connects the first attachment member and the second attachment member with each other, and a bracket (B) that is connected to the remaining one of the vibration generating portion and the vibration receiving portion and is press-fitted into the first attachment member. The second attachment member includes a stopper wall portion ( 14 ) which surrounds the first attachment member from radially outside. A penetration hole ( 11 b ) which is open toward the stopper wall portion is formed in the first attachment member, and a stopper elastic body ( 19 ) covering the penetration hole is installed on an inner circumferential surface of the first attachment member. The stopper elastic body is elastically deformed by the bracket and protrudes to an outer circumferential surface side of the first attachment member through the penetration hole.

First claim

What is claimed is:

1. A vibration-damping device comprising:
a tubular first attachment member;
a second attachment member that is attached to any one of a vibration generating portion and a vibration receiving portion;
an elastic body that connects the first attachment member and the second attachment member with each other; and
a bracket that is connected to the remaining one of the vibration generating portion and the vibration receiving portion and is press-fitted into the first attachment member,
wherein the second attachment member includes a stopper wall portion which surrounds the first attachment member from radially outside,
wherein an outer stopper elastic body is installed on an inner circumferential surface of the stopper wall portion,
wherein a penetration hole which is open toward the stopper wall portion is formed in the first attachment member, and a stopper elastic body covering the penetration hole is installed on an inner circumferential surface of the first attachment member,
wherein, in the stopper elastic body, a recess portion is formed in a part positioned at a part in which no penetration hole is formed on the inner circumferential surface of the first attachment member,
wherein a covering elastic body integrally formed with the stopper elastic body is installed on an outer circumferential surface of the first attachment member,
wherein a portion of the covering elastic body covering the penetration hole from an outer circumferential surface side of the first attachment member protrudes and comes into contact with or comes close to the outer stopper elastic body by the stopper elastic body being elastically deformed by the bracket and protruding to the outer circumferential surface side of the first attachment member through the penetration hole,
wherein the portion of the covering elastic body covering the penetration hole from the outer circumferential surface side of the first attachment member protrudes towards the stopper wall portion and comes into contact with or comes close to the outer stopper elastic body when the bracket is press-fitted into the first attachment member, and
wherein the portion of the covering elastic body includes at least one protruding part that extends from a surface of the covering elastic body situated directly opposite the outer stopper elastic body in a direction toward the outer stopper elastic body.

Assignees

• Bridgestone Corp

Inventors

• Shimizu Hiroaki

Classifications

• F16F1/3863

  characterised by the rigid sleeves or pin, e.g. of non-circular cross-section (F16F1/3807, F16F1/387 take precedence) · CPC title

• F16F2230/02

  Surface features, e.g. notches or protuberances · CPC title

• F16F1/3828 Primary

  End stop features or buffering (F16F1/3807 takes precedence) · CPC title

• F16F1/38 Primary

  with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin {, i.e. bushing-type (hydraulically-damped bushes F16F13/14; suppression of vibrations in rotating systems by making use of elastomeric spring members between rotating elements, driveline torque being transmitted therebetween F16F15/126, by making use of a dynamic damping mass attached to a rotating element by means of elastomeric springs F16F15/14; pivots per se F16C11/00; elastic or yielding bearings or bearing supports F16C27/00; parts of sliding-contact bearings, e.g. bushes F16C33/04)} · CPC title

• F16F1/3842

  Method of assembly, production or treatment; Mounting thereof (supports for pipes, cables or protective tubing F16L3/00) · CPC title