Center bearing bush unit for propeller shaft

Patent metadata

Field	Value
Publication number	US-10151345-B2
Application number	US-201715693858-A
Country	US
Kind code	B2
Filing date	Sep 1, 2017
Priority date	Dec 31, 2012
Publication date	Dec 11, 2018
Grant date	Dec 11, 2018

Abstract

A center bearing bush unit for a propeller shaft can effectively decrease the amount of large/small displacement that occurs in the propeller shaft during driving of a vehicle. A center bearing bush unit for a propeller shaft includes an inner pipe; an outer pipe disposed on a common axis as the inner pipe at the outside of the inner pipe; a cushion rubber attached between the inner and outer pipes, and having a plurality of voids disposed on the common axis; and a plurality of stoppers attached to the outer circumferential surface of the inner pipe while being spaced apart from the cushion rubber at a predetermined interval.

First claim

What is claimed is:

1. A center bearing bush unit for a propeller shaft, comprising:
an inner pipe;
an outer pipe disposed on a common axis with the inner pipe at an outside of the inner pipe;
a cushion rubber attached between the inner and outer pipes, and having a plurality of voids disposed around the common axis and the plurality of voids includes an inner void and an outer void;
an outer stopper attached to an outer circumferential surface of the inner pipe while being spaced apart from the cushion rubber at a predetermined interval; and
an inner stopper attached to an inner circumferential surface of the outer pipe while being spaced apart from the cushion rubber at a predetermined interval,
wherein a first one end portion of the inner stopper is inserted into the inner void of the cushion rubber in a state in which an outer circumferential surface of the inner stopper is attached to the inner circumferential surface of the outer pipe, and a first end portion of the outer stopper is inserted into the outer void of the cushion rubber in a state in which an inner circumferential surface of the outer stopper is attached to the outer circumferential surface of the inner pipe,
wherein each distal end of the outer stopper and the inner stopper is curved in a parallel direction of the common axis toward the cushion rubber to form the first end portions of the inner and outer stoppers respectively so that each first end portion of the inner and outer stoppers is inserted into the corresponding inner and outer voids, respectively, and
wherein the inner stopper and the outer stopper are configured to selectively contact the cushion rubber.

2. The center bearing bush unit of claim 1 , wherein the plurality of voids provided in the cushion rubber are formed to have an identical width.

3. The center bearing bush unit of claim 1 , wherein the inner void is disposed adjacent to an inner circumferential surface of the cushion rubber, and the outer void is disposed adjacent to an outer circumferential surface of the cushion rubber.

4. The center bearing bush unit of claim 1 , wherein the inner and outer stoppers are formed to have an identical thickness.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Kim Jang Ho

Classifications

• F16C27/066 Primary

  Ball or roller bearings · CPC title

• F16C19/06

  with a single row or balls · CPC title

• F16C2326/06

  Drive shafts · CPC title

• F16F1/3828

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