US 10,543,811 B2Granted

Wiper system and wiper system control method

AssigneeMitsuba Corporation

InventorsTetsuya Koike, Ken Hirata, Kengo Shimizu

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Abstract

A wiper system performs operation control on wiper driving electric motors and based on position information about wiper blades and attached to pivot shafts, wherein a learning mode in which a position of the wiper blades is learned to correct blade position information is executed after the wiper blades are attached to the pivot shafts, respectively. In the learning mode, the wiper blades are moved to a prescribed position such as a lower retracted position, and that the wiper blades are located in the prescribed position is detected by such means as a sensor, a video image, and contact with a jig. If the wiper blades are detected to be in the prescribed position, the blade position information is corrected to a value corresponding to the position.

Claims3

Dependent claims

A wiper system comprising:

a wiper blade that is arranged on a wiping surface;
a wiper arm to which the wiper blade is attached;
a pivot shaft that is installed on a vehicle side and to which the wiper arm is fixed;
an electric motor that drives the pivot shaft to rotate;
and
a control device that performs operation control on the electric motor based on position information about the wiper blade,
the control device having a learning mode that is executed when the wiper arm is attached to the pivot shaft and in which a position of the wiper blade is learned to correct the position information,
the learning mode including, after the wiper arm is attached to the pivot shaft, moving the wiper blade to a predetermined prescribed position, detecting that the wiper blade is located in the prescribed position, and correcting the position information to a value corresponding to the prescribed position,
wherein that the wiper blade is located in the prescribed position is detected by using a video image.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/521,054Filed 5 Nov 2015
Priority: JP 2014-22769210 Nov 2014
Published: US 2017/0313284 A12 Nov 2017
Granted: 28 Jan 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

B60S 1/0807
Intermittent control circuits: using electronic control means, e.g. tubes, semiconductors
B60S 1/0452
Wipers or the like, e.g. scrapers: position of the wipers relative to the vehicle
B60S 1/0461
Arrangement wherein the windscreen frame cooperates with the wipers: arrangement of the side pillars
B60S 1/0469
Position of the wipers relative to the vehicle: devices for assisting the wiper positioning on the vehicle