US 4,651,980 AGranted

Vibration isolator

AssigneeHonda Giken Kogyo Kabushiki Kaisha

InventorsIsamu Morita, Katsuyoshi Arai, Tetsuya Koike

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Abstract

A vibration isolator for mounting a vibrating body on a structural body includes a first attachment member adapted to be connected to the vibrating body, a second attachment member adapted to be connected to the structural body, and an elastically deformable resilient member fixed to and interconnecting the first and second attachment members, the resilient member being elastically deformable in response to relative movement of the first attachment member with respect to the second attachment member. The vibration isolator has a first chamber defined at least partly by the resilient member and having a volume variable dependent on elastic deformation of the resilient member, and a second chamber operatively communicating with the first chamber through an operative communication structure and having a volume variable dependent on variation of the volume of the first chamber, the first and second chambers being filled with a liquid. The operative communication structure includes a flexible film dividing the first and second chambers from each other and an arrangement for limiting movement of the flexible film.

Claims6

Dependent claims

A vibration isolater for mounting a vibration body on a structural body, comprising:

(a) a first attachment member adapted to be connected to the vibrating body;
(b) a second attachment member adapted to be connected to the structural body;
(c) an elastically deformable resilient member fixed to and interconnecting said first and second attachment members, said resilient member being elastically deformable in response to relative movement of said first attachment member with respect to said second attachment member;
(d) a first chamber defined at least partly by said resilient member and having a volume variable dependent on elastic deformation of said resilient member;
(e) a second chamber operatively communicating with said first chamber solely through an operative pressure communication structure and having a volume variable dependent on variation of the volume of said first chamber, said first and second chambers being filled with a liquid;
and
(f) said operative pressure communication structure including a flexible film dividing said first and second chambers from each other and preventing fluid communication between said first and second chambers, and means for substantially limiting deformation of the flexible film so that said operative communication structure selectively prevents and permits solely pressure communication between said first and second chambers when the deformation of said flexible film is respectively limited and not limited by said means.

4 more elements

Dependencies are inferred from the claim text.