Propeller shaft damper with retention lip

Patent metadata

Field	Value
Publication number	US-12270448-B2
Application number	US-202217840693-A
Country	US
Kind code	B2
Filing date	Jun 15, 2022
Priority date	Jun 15, 2021
Publication date	Apr 8, 2025
Grant date	Apr 8, 2025

Abstract

A propeller shaft assembly includes a propeller shaft extending along an axis between a first and second shaft end. A propeller shaft yoke is operably connected to one of the first or second shaft ends and includes a body presenting a mounting surface extending circumferentially about the axis. A tuned damper extends radially outwardly from the mounting surface and includes a first damper ring disposed in abutting and encircling relationship with the mounting surface and a second damper ring disposed in abutting and encircling relationship with the first damper ring. The tuned damper includes a retention lip extending radially downwardly from the second damper ring in axially spaced relationship with the mounting hub by an axial spacing distance D for protecting the tuned damper from axial impact forces and improving the robustness of the tuned damper mounted on the mounting surface.

First claim

What is claimed is:

1. A propeller shaft yoke comprising:
a body extending along an axis A from a first yoke end for coupling with a propeller shaft and a second yoke end for coupling with a vehicle driveline component;
said body presenting a mounting surface extending circumferentially about said axis A;
a tuned damper extending radially outwardly from said mounting surface to define a first damper side disposed adjacent said first yoke end and a second damper side disposed adjacent said second yoke end;
said tuned damper including a first damper ring disposed in abutting and encircling relationship with said mounting surface and a second damper ring disposed in abutting and encircling relationship with said first damper ring; and
one of said first or second damper sides of said tuned damper including a retention lip extending radially downwardly from said second damper ring and past said first damper ring to a retention lip end disposed in adjacent and axially spaced relationship with said said mounting hub to define an axial spacing distance D between said retention lip and said mounting hub.

2. The propeller shaft yoke as set forth in claim 1 , wherein said retention lip defines a plurality of apertures disposed in circumferentially spaced relationship with one another for establishing an escape path for contaminant build-up in said axial spacing distance D disposed between said retention lip and said mounting hub.

3. The propeller shaft yoke as set forth in claim 2 , wherein each of said plurality of apertures extend radially upwardly from said retention lip end.

4. The propeller shaft assembly as set forth in claim 1 , wherein said retention lip is integrally formed with said second damper ring.

5. The propeller shaft assembly as set forth in claim 1 , wherein said retention lip extends circumferentially about said first damper side of said tuned damper.

6. The propeller shaft assembly as set forth in claim 1 , wherein said retention lip extends circumferentially about said second damper side of said tuned damper.

7. The propeller shaft assembly as set forth in claim 1 , wherein said propeller shaft yoke is comprised of a flange yoke.

8. The propeller shaft assembly as set forth in claim 1 , wherein said propeller shaft yoke is comprised of a slip yoke.

9. The propeller shaft assembly as set forth in claim 1 , wherein said propeller shaft yoke is comprised of a stud yoke.

10. The propeller shaft assembly as set forth in claim 1 , wherein said first damper ring is comprised of a flexible material and said second damper ring is comprised of a steel or iron material.

11. A propeller shaft assembly for connection to a vehicle driveline component, the propeller shaft assembly comprising:
a propeller shaft extending along an axis A between a first shaft end and a second shaft end;
a propeller shaft yoke operably connected to one of said first or second shaft ends of said propeller shaft;
said propeller shaft yoke including a body extending from a first yoke end disposed adjacent said respective first or second shaft end to a second yoke end for coupling with the vehicle driveline component;
said body presenting a mounting surface extending circumferentially about said axis;
a tuned damper extending radially outwardly from said mounting surface to define a first damper side disposed adjacent said first yoke end and a second damper side disposed adjacent said second yoke end;
said tuned damper including a first damper ring disposed in abutting and encircling relationship with said mounting surface and a second damper ring disposed in abutting and encircling relationship with said first damper ring; and
one of said first or second damper sides of said tuned damper including a retention lip extending radially downwardly from said second damper ring and past said first damper ring to a retention lip end disposed in adjacent and axially spaced relationship with said mounting hub to define an axial spacing distance D between said retention lip and said mounting hub for protecting said tuned damper from axial impact forces.

12. The propeller shaft assembly as set forth in claim 11 , wherein said retention lip defines a plurality of apertures disposed in circumferentially spaced relationship with one another for establishing an escape path for contaminant build-up in said axial spacing distance D between said retention lip and said mounting hub.

13. The propeller shaft assembly as set forth in claim 12 , wherein each of said plurality of apertures extend radially upwardly from said retention lip end.

14. The propeller shaft assembly as set forth in claim 11 , wherein said retention lip is integrally formed with said second damper ring.

15. The propeller shaft assembly as set forth in claim 11 , wherein said retention lip extends circumferentially about said first damper side of said tuned damper.

16. The propeller shaft assembly as set forth in claim 11 , wherein said retention lip extends circumferentially about said second damper side of said tuned damper.

17. The propeller shaft assembly as set forth in claim 11 , wherein said propeller shaft yoke is comprised of a flange yoke.

18. The propeller shaft assembly as set forth in claim 11 , wherein said propeller shaft yoke is comprised of a slip yoke.

19. The propeller shaft assembly as set forth in claim 11 , wherein said propeller shaft yoke is comprised of a stud yoke.

20. The propeller shaft assembly as set forth in claim 11 , wherein said first damper ring is comprised of a flexible material and said second damper ring is comprised of a steel or iron material.

Assignees

• Neapco Intellectual Property Holdings Llc

Inventors

• Das Niladri S
• Wehner Robert J
• White James B

Classifications

• F16D2300/22

  Vibration damping · CPC title

• F16F15/322

  the rotating body being a shaft (F16F15/34, F16F15/36 take precedence) · CPC title

• F16C3/02

  Shafts; Axles · CPC title

• F16C2326/06

  Drive shafts · CPC title

• F16F2230/007

  with, or used as an end stop or buffer; Limiting excessive axial separation · CPC title