Vibration isolation device

Patent metadata

Field	Value
Publication number	US-10119593-B2
Application number	US-201515514222-A
Country	US
Kind code	B2
Filing date	Aug 31, 2015
Priority date	Oct 3, 2014
Publication date	Nov 6, 2018
Grant date	Nov 6, 2018

Abstract

A vibration isolation device ( 10 ) includes a first mounting member ( 11 ) connected to one of a vibration generating portion and a vibration receiving portion, and a second mounting member ( 12 ) connected to the other; an elastic body ( 13 ) disposed between the mounting members ( 11, 12 ); a first stopper elastic body ( 27 ) having a first stopper surface ( 26 ) which is disposed on either one of opposing surfaces ( 24, 25 ) that oppose each other, respectively on the first mounting member ( 11 ) and the second mounting member ( 12 ), and which faces the other surface such as to be capable of coming into contact therewith; and a second stopper elastic body ( 29 ) having a second stopper surface ( 28 ) which is disposed on either one of the opposing surfaces ( 24, 25 ), respectively on the first mounting member ( 11 ) and the second mounting member ( 12 ), and which faces the other surface such as to be capable of coming into contact therewith. The distance between the first stopper surface ( 26 ) and the opposing surface ( 24 ) facing the first stopper surface ( 26 ) is smaller than the distance between the second stopper surface ( 28 ) and the opposing surface ( 24 ) facing the second stopper surface ( 28 ).

First claim

The invention claimed is:

1. A vibration isolation device comprising:
a first mounting member connected to one of a vibration generating portion and a vibration receiving portion, and a second mounting member connected to the other thereof;
an elastic body disposed between the mounting members;
a first stopper elastic body having a first stopper surface, the first stopper elastic body being disposed on one of opposing surfaces that oppose each other, respectively on the first mounting member and the second mounting member, the first stopper surface facing the other one of the opposing surfaces such as to be capable of coming into contact therewith; and
a second stopper elastic body having a second stopper surface, the second stopper elastic body being disposed on one of the opposing surfaces, respectively on the first mounting member and the second mounting member, the second stopper surface facing the other one of the opposing surfaces such as to be capable of coming into contact therewith,
wherein a distance between the first stopper surface and the other one of the opposing surfaces facing the first stopper surface is smaller than a distance between the second stopper surface and the other one of the opposing surfaces facing the second stopper surface, and
wherein:
a hollow portion, in which a first stopper elastic member is disposed, is formed in the one of the opposing surfaces of the first mounting member or the second mounting member;
a gap is provided between at least a portion of a side surface of the first stopper elastic body and an inner surface of the hollow portion;
in the surfaces of the first stopper elastic body, the surface facing the direction opposed to the first stopper surface is bonded to an inner surface of the hollow portion; and
gaps are provided between the side surfaces of the first stopper elastic body and the inner surfaces of the hollow portions around the entire perimeter in the aforementioned side view.

2. The vibration isolation device according to claim 1 , wherein the first stopper surface protrudes from the one of the opposing surfaces on which the hollow portion is formed.

3. The vibration isolation device according to claim 1 , wherein the entire side surface of the first stopper elastic body is not in contact with the inner surface of the hollow portion.

Assignees

• Bridgestone Corp

Inventors

• Kojima Hiroshi

Classifications

• B60K5/1208

  Resilient supports (B60K5/1241 - B60K5/1291 take precedence) · CPC title

• F16F15/08 Primary

  with rubber springs {(grommet- or bushing-type resilient mountings F16F1/3732, F16F1/38); with springs made of rubber and metal (arrangement of internal-combustion or jet-propulsion units B60K5/12; mounting of propulsion plants on vessels B63H21/30; mounting of vehicle drivers' cabs B62D33/0604)} · CPC title

• F16F3/0873

  of the same material or the material not being specified · CPC title

• F16F1/371 Primary

  characterised by inserts or auxiliary extension {or exterior} elements, e.g. for rigidification (F16F1/387 takes precedence; {non-embedded reinforcing elements for flexibly-walled air springs F16F9/0436}) · CPC title

• F16F1/374

  having a spherical or the like shape · CPC title