Power take-off having reduced gear noise

Patent metadata

Field	Value
Publication number	US-9494227-B2
Application number	US-201414765912-A
Country	US
Kind code	B2
Filing date	Feb 7, 2014
Priority date	Feb 8, 2013
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

A power take-off that significantly reduces the amount of undesirable noise that is transmitted therethrough during operation includes a housing, an input mechanism, and an output mechanism. The input mechanism is disposed within the housing and is adapted to be connected to a source of rotational energy. The output mechanism is also disposed within the housing and is adapted to be connected to a driven device. The output mechanism is adapted to be rotatably driven by the input mechanism. At least one of the input mechanism and the output mechanism includes a shaft having at least one portion that is supported on the housing by a vibration damping material.

First claim

What is claimed is:

1. A power take-off comprising:
a housing;
an input mechanism disposed within the housing and adapted to be connected to the source of rotational energy; and
an output mechanism disposed within the housing and adapted to be connected to a driven device, the output mechanism adapted to be rotatably driven by the input mechanism;
wherein at least one of the input mechanism and the output mechanism includes a shaft having at least one portion that is supported on the housing by a vibration damping material.

2. The power take-off defined in claim 1 wherein the vibration damping material is an elastomeric material.

3. The power take-off defined in claim 1 wherein the vibration damping material is rubber.

4. The power take-off defined in claim 1 wherein the shaft is non-rotatably supported on the housing by the vibration damping material.

5. The power take-off defined in claim 1 wherein the shaft has a groove provided therein, and wherein the vibration damping material is disposed within the groove.

6. The power take-off defined in claim 1 wherein the housing has a groove provided therein, and wherein the vibration damping material is disposed within the groove.

7. The power take-off defined in claim 1 wherein the vibration damping material is generally elliptical in cross sectional shape.

8. The power take-off defined in claim 1 wherein the vibration damping material is generally rectangular in cross sectional shape.

9. The power take-off defined in claim 1 wherein the vibration damping material is generally U-shaped in cross sectional shape.

10. The power take-off defined in claim 1 wherein the vibration damping material is generally cup-shaped in cross sectional shape.

11. The power take-off defined in claim 1 wherein the vibration damping material is generally cup-shaped in cross sectional shape and is disposed about both circumferentially-facing and the axially-facing portions of an end of the shaft.

12. The power take-off defined in claim 1 wherein the shaft is an input shaft that supports an input gear that is adapted to be connected to the source of rotational energy.

13. The power take-off defined in claim 1 wherein the shaft has two portions that are each supported on the housing by respective vibration damping materials.

14. The power take-off defined in claim 1 wherein the vibration damping material maintains a space between the shaft and the housing.

15. The power take-off defined in claim 1 wherein the portion of the shaft is supported on the housing in a non-rotatable and a non-axially movable manner by the vibration damping material.

16. A power take-off comprising:
a housing including a first bore and a second bore;
an input shaft having a first portion that is supported in the first bore of the housing by a vibration damping material and a second portion that is supported in the second bore of the housing;
an input gear rotatably supported on the input shaft and adapted to be connected to the source of rotational energy; and
an output mechanism disposed within the housing and adapted to be connected to a driven device, the output mechanism adapted to be rotatably driven by the input gear.

17. The power take-off defined in claim 16 wherein the input shaft is non-rotatable and non-axially movable relative to the housing.

18. The power take-off defined in claim 15 wherein the vibration damping material is generally elliptical in cross sectional shape.

19. The power take-off defined in claim 15 wherein the vibration damping material is generally U-shaped in cross sectional shape.

20. The power take-off defined in claim 15 wherein the vibration damping material is generally cup-shaped in cross sectional shape.

21. The power take-off defined in claim 15 wherein the vibration damping material is generally cup-shaped in cross sectional shape and is disposed about both circumferentially-facing and the axially-facing portions of an end of the input shaft.

Assignees

• Parker Hannifin Corp

Inventors

• Mcpherson Robert
• Friend Greg
• Burrell John William

Classifications

• B60Y2306/09

  Reducing noise · CPC title

• B60Y2300/20

  Reducing vibrations in the driveline · CPC title

• B60K17/28 Primary

  characterised by arrangement, location, or type of power take-off · CPC title

• F16H57/0006 Primary

  Vibration-damping or noise reducing means specially adapted for gearings (devices for varying tension of belts, ropes or chains with damping means F16H7/0829; toothed members with construction providing vibration damping F16H55/14; reducing vibrations or noise of the gearbox casing F16H57/028; suppression of vibrations or noise of gear selectors F16H59/0208; control of hydrostatic fluid gearing preventing or reducing vibrations or noise F16H61/4183) · CPC title

• B60K25/00

  Auxiliary drives (arrangement of tyre-inflating pumps mounted on vehicles B60C23/10) · CPC title