Vibration isolator

Patent metadata

Field	Value
Publication number	US-11085504-B2
Application number	US-202016877669-A
Country	US
Kind code	B2
Filing date	May 19, 2020
Priority date	May 28, 2019
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

A vibration isolator comprises: a first member in which an end portion of a shaft portion being fixed to a mating member; a vibration-isolation base made of an elastic body connecting a second member and the first member; and a stopper made of an elastic body arranged between the second member and the mating member with the first surface. The shaft portion is arranged in the hole of the stopper with the end portion facing the matching member. The inner surface of the hole of the stopper, prior to the shaft portion is inserted into the hole, includes: a first portion having a span smaller than the thickness of the end portion of the shaft portion; and a second portion arranged between the first portion and the second surface. A span of the second portion is greater than the span of the first portion.

First claim

What is claimed is:

1. A vibration isolator comprising:
a first member including a shaft portion extending along an axis line, an end portion of the shaft portion being fixed to a mating member;
a second member spaced from the first member and at least a portion of the second member spaced from the shaft portion in the direction perpendicular to the axis line;
a vibration-isolation base made of an elastic body connecting the second member and the first member; and
a stopper made of an elastic body having a first surface, a second surface and a hole connecting the first surface and the second surface;
the stopper arranged in a state where the shaft portion of the first member is arranged in the hole with the end portion facing the mating member, and arranged between the second member and the mating member with the first surface facing the mating member and the second surface facing the second member, and
an inner surface of the hole of the stopper, prior to the shaft portion is arranged in the hole, including:
a first portion having a span smaller than the thickness of the end portion of the shaft portion; and
a second portion arranged between the first portion and the second surface,

wherein a span of the second portion is greater than the span of the first portion.

2. The vibration isolator according to claim 1 , wherein the first portion is in contact with the shaft portion when the shaft portion is arranged in the hole.

3. The vibration isolator according to claim 2 , wherein the first portion includes the entire periphery of the inner surface.

4. The vibration isolator according to claim 1 , wherein the stopper has a convex portion raised in the axial direction from at least a portion of the first surface around the hole, and the first portion includes inside the convex portion.

5. The vibration isolator according to claim 4 , wherein the stopper includes a step between the first portion and the second surface,
the second portion is disposed between the step and the second surface and spaced from the shaft portion when the shaft portion is arranged in the hole.

6. The vibration isolator according to claim 1 , wherein, prior to the shaft portion is arranged in the hole, the span of the second portion is greater than thickness of the end portion of the shaft portion.

7. The vibration isolator according to claim 1 , wherein, prior to the shaft portion is arranged in the hole, the span of the inner surface is increased from the first portion to the second portion.

Assignees

• Toyo Tire Corp

Inventors

• Arakawa Sayaka

Classifications

• F16F1/3814

  characterised by adaptations to counter axial forces (F16F1/393 takes precedence) · CPC title

• F16F13/101 Primary

  characterised by buffering features or stoppers · 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

• F16F1/3842 Primary

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

• F16F2230/0005

  Attachment, e.g. to facilitate mounting onto confer adjustability · CPC title