Direct drive for a windshield wiper system

Patent metadata

Field	Value
Publication number	US-12049200-B2
Application number	US-202318332274-A
Country	US
Kind code	B2
Filing date	Jun 9, 2023
Priority date	Aug 14, 2019
Publication date	Jul 30, 2024
Grant date	Jul 30, 2024

Abstract

Provided are embodiments for a direct drive wiper system. The system includes a motor that is operably coupled to a wiper system to drive one or more wiper arms of the wiper system, and a gearbox, wherein an input to the gearbox is coupled to the motor and an output of the gearbox is coupled to the wiper assembly, wherein the gearbox is configured to convert an input from the motor to an output to drive the wiper system. The system also includes a brake and stopper mechanism that is coupled to the gearbox and the wiper system. Also provided are embodiments for a method for operating the direct drive wiper system.

First claim

What is claimed is:

1. A direct drive wiper system, the system comprising:
a motor operably coupled to a wiper system to drive one or more wiper arms of the wiper system; a gearbox, wherein an input of the gearbox is coupled to the motor and receives a rotational input from the motor and an output of the gearbox is coupled to the wiper system, wherein the gearbox is configured to convert the rotational input from the motor to a rotational output to drive the wiper system; stopper coupled to the gearbox and the wiper system, wherein the stopper is configured to stop the one or more wiper arms of the wiper system; a brake configured to place the one or more wiper arms in a parked position and is further configured to lock the one or more wiper arms in position after stopping the one or more wiper arms and placing them in the parked position to hold the one or more wiper arms in place relative to a windshield of an aircraft when not in use; wherein the gearbox is a magnetic gearbox; wherein the magnetic gearbox comprises an outer ring, an inner ring, and an interface, wherein the interface comprises pole-pieces that are disposed between the outer ring and the inner ring.

2. The system of claim 1 , wherein the pole-pieces of the interface is are composed of a ferromagnetic material.

3. The system of claim 1 , wherein the pole-pieces are coupled to a wiper shaft of the wiper system.

4. The system of claim 1 , wherein the motor is coupled to the inner ring to provide an input to the magnetic gearbox.

5. The system of claim 1 , wherein the outer ring is stationary.

6. The system of claim 1 , further comprising an integrated brake and stopper, wherein the integrated brake and stopper is coupled to the output of the gearbox and a wiper shaft.

7. The system of claim 1 , wherein the motor is a bi-directional motor, wherein the motor is configured to drive the one or more wiper arms in a forward and reverse direction.

8. The system of claim 1 , wherein the gearbox is a multi-stage magnetic gearbox.

9. The system of claim 1 , wherein the gearbox is in a coaxial gear arrangement.

Assignees

• Rosemount Aerospace Inc

Inventors

• Mahapatra Guru Prasad
• Jacob Robin

Classifications

• B60Y2200/52

  Helicopters · CPC title

• B60Y2200/51

  Aeroplanes · CPC title

• B60Y2200/10

  Road Vehicles · CPC title

• B60S1/08 Primary

  electrically driven {(conjoint control of windscreen wiper motor and liquid supply of windscreen washer B60S1/482; conjoint control of windscreen wiper motor and means for cleaning parts o parts other than windscreens or front windows B60S1/56, B60S1/58, B60S1/606)} · CPC title

• H02K49/106

  with a radial air gap · CPC title