Compact gearbox design for windshield wiper system
AssigneeRosemount Aerospace Inc.
InventorsNouduri Phani Srinivas, Srivatsa Santyar
Life of this patent
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Abstract
A windshield wiper system (WWS) is provided and includes a brushless direct current (BLDC) motor with a motor output shaft gear, a gear train and an internally cut sector gear. The gear train includes a first gear, which has a first diameter and engages with the motor output shaft gear, and a second gear, which has a second diameter that is shorter than the first diameter and rotates with the first gear. The internally cut sector gear is coupled with an output shaft and formed to define an internal geared groove that engages with the second gear.
Claims14
A windshield wiper system (WWS), comprising:
- a brushless direct current (BLDC) motor with a motor output shaft gear;
- a gear train comprising a first gear, which has a first diameter and engages with the motor output shaft gear, and a second gear, which has a second diameter that is shorter than the first diameter and rotates with the first gear;
- an internally cut sector gear, which is coupled with an output shaft and formed to define an internal geared groove that engages with the second gear;
- and
- a controller storing overcurrent trip logic,
- wherein mechanical interference between the second gear and either opposite end of the internal geared groove activates the overcurrent trip logic of the controller.
A windshield wiper system (WWS), comprising:
- a motor with a motor output shaft gear;
- a gear train comprising first and second gears, the first gear having a first diameter and engaging with the motor output shaft gear and the second gear having a second diameter shorter than the first diameter and rotating with the first gear;
- and
- an internally cut sector gear coupled with an output shaft and defining an internal geared groove engaging with the second gear,
- wherein mechanical interference between the second gear and either opposite end of the internal geared groove activates overcurrent trip logic.
Dependencies are inferred from the claim text.