Vibration isolating device

Patent metadata

Field	Value
Publication number	US-9709116-B2
Application number	US-201314421527-A
Country	US
Kind code	B2
Filing date	Aug 23, 2013
Priority date	Aug 24, 2012
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

A large ring part of a torque rod includes an outer frame section, an inner member, an intermediate ring and an elastic vibration isolating main body. The outer frame section and the intermediate ring are integrally combined with the elastic vibration isolating main body. An inner clearance is provided between the intermediate ring and the inner member such as to surround the circumference of the inner member. The intermediate ring is movable relative to the inner member in the axial direction. With respect to the vibration in the direction of a mounting shaft, the outer frame section, the intermediate ring and the elastic vibration isolating main body move together in the axial direction in relation to the inner member, whereby the spring in the direction of the mounting shaft is weakened and the resonance frequency of the rigid body resonance in the direction of the mounting shaft is decreased.

First claim

What is claimed is:

1. A vibration isolating device comprising:
an outer frame section,
an inner member being arranged on an inside of the outer frame section,
an elastic vibration isolation main body being arranged between the outer frame section and the inner member, wherein the outer frame section and the elastic vibration isolation main body are integrated into an outer structure section, and
an inner clearance which is configured to surround the inner member, being provided between the outer structure section and the inner member,
a retainer flange that projects outwardly in a radial direction, said retainer flange being provided on at least one end in an axial direction of the inner member, wherein;
an outer circumference covering section of an elastic member being provided to cover an outer circumference of the inner member,
the retainer flange is provided integrally with, and is adapted to be folded back with, the outer circumference covering section of the elastic member covering the outer circumference of the inner member; and,
the retainer flange is folded back when the inner member is pressed into a through hole arranged on the outer structure section for passing the inner member.

2. The vibration isolating device according to claim 1 , further comprising an intermediate ring that is configured to surround the inner member, being arranged between the outer frame section and the inner member, wherein the intermediate ring and the elastic vibration isolation main body are integrated into the outer structure section.

3. The vibration isolating device according to claim 2 , further comprising an inner circumferential surface of the outer structure section being formed of the intermediate ring, wherein the inner clearance is formed between the outer circumference covering section and the intermediate ring.

4. The vibration isolating device according to claim 3 , wherein zero clearance is provided between the retainer flange and an axial end of the intermediate ring.

5. The vibration isolating device according to claim 1 , wherein the elastic vibration isolation main body is provided with axially extending through bored holes located on each side of the inner member in a main vibration inputting direction, and a portion between the bored holes is formed into a rubber foot section.

6. The vibration isolating device according to claim 1 , further comprising a gap being provided between the retainer flange and the outer structure section.

7. The vibration isolating device according to claim 1 , wherein an end in the axial direction of the outer circumference covering section is provided with a recess of a small diameter for folding and accommodating the retainer flange.

8. The vibration isolating device according to claim 1 , wherein the inner clearance is formed in the shape of a ring extending around a full circumference in a circumferential direction and over a full length in the axial direction of the inner member, and the outer structure section and the inner member are separated in such a manner as to be movable relative to each other without sliding resistance.

Assignees

• Yamashita Rubber Kk

Inventors

• Shimada Hitoshi

Classifications

• F16F1/3849 Primary

  Mounting brackets therefor, e.g. stamped steel brackets; Restraining links · CPC title

• F16F1/3828

  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

• F16F1/3873 Primary

  having holes or openings · CPC title

• F16F15/08

  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