A wiper device is provided. A boost control unit, if a duty ratio has reached an upper limit value determined in advance, and if the rotational speed of a motor is less than a target rotational speed, varies an advance angle and an energization angle associated with the energization of the motor in accordance with the target rotational speed. An overtemperature protection unit monitors a load state of the motor, and, upon detecting a high-load state, performs a first protection control for decreasing the rotational speed of the motor. A demagnetization protection unit, upon receipt of an operating signal from a wiper switch when the temperature detected by means of a temperature sensor exceeds a first threshold and the first protection control is being performed, performs a second protection control for fixing the advance angle and energization angle of the motor by prohibiting the operation of the boost control unit.

A wiper device is provided. A boost control unit, if a duty ratio has reached an upper limit value determined in advance, and if the rotational speed of a motor is less than a target rotational speed, varies an advance angle and an energization angle associated with the energization of the motor in accordance with the target rotational speed. An overtemperature protection unit monitors a load state of the motor, and, upon detecting a high-load state, performs a first protection control for decreasing the rotational speed of the motor. A demagnetization protection unit, upon receipt of an operating signal from a wiper switch when the temperature detected by means of a temperature sensor exceeds a first threshold and the first protection control is being performed, performs a second protection control for fixing the advance angle and energization angle of the motor by prohibiting the operation of the boost control unit.

An object detection system may include an object detecting device. The object detecting device may generate an object signal based on detecting an object. The object detection system may include a controller for operating a motor. The motor may be connected to a wiper element. The controller may generate a position signal based on a position of the motor. The object detection system may include an object detection module in communication with the object detecting device. The object detection module may receive the object signal and/or the position signal. The object detection system may be configured to selectively control the motor in response to detecting the object.

Wheel (100) for a vehicle window wiper drive system, said wheel comprising electrical contact means (400), a first and a second electrical contact means (410, 411) of said electrical contact means being in electrical continuity, and the first and the second electrical contact means being for a respective slider (200a, 200b), said wheel being characterized in that the angular extension () of said electrical contact means in the plane of the wheel is strictly less than 360 and said electrical contact means being situated on a face of the wheel intended to receive a linkage.

Wheel (100) for a vehicle window wiper drive system, said wheel comprising electrical contact means (400), a first and a second electrical contact means (410, 411) of said electrical contact means being in electrical continuity, and the first and the second electrical contact means being for a respective slider (200a, 200b), said wheel being characterized in that the angular extension () of said electrical contact means in the plane of the wheel is strictly less than 360 and said electrical contact means being situated on a face of the wheel intended to receive a linkage.

The invention proposes an autonomous device for controlling a heating circuit of an automotive vehicle windscreen wiper blade, comprising a module for regulating the electrical power supply of the heating circuit, furnished with an input for connecting to an electrical energy generator and with an output for connecting to a said windscreen wiper blade heating circuit. This device comprises means for acquiring, at an instant t, a datum representative of a temperature outside the vehicle on the one hand and of a datum representative of the instantaneous speed of the vehicle on the other hand, the said acquiring means being configured to transmit these data to the regulating module.

A wiper control device that properly detects restriction of a wiper blade according to a travel distance of the wiper blade. When a state in which a rotation speed of an output shaft calculated from a rotation angle of the output shaft detected by a rotation angle sensor is equal to or slower than a speed threshold defined according to a travel distance of the wiper blade and in which a current detected by a current detector is equal to or larger than a current threshold continues for a predetermined determination period, a microcomputer stops a wiper motor or reverses a direction of a wiping action of the wiper blade.

A wiper control device that properly detects restriction of a wiper blade according to a travel distance of the wiper blade. When a state in which a rotation speed of an output shaft calculated from a rotation angle of the output shaft detected by a rotation angle sensor is equal to or slower than a speed threshold defined according to a travel distance of the wiper blade and in which a current detected by a current detector is equal to or larger than a current threshold continues for a predetermined determination period, a microcomputer stops a wiper motor or reverses a direction of a wiping action of the wiper blade.

A wiper device includes a wiper arm and a drive section. The wiper arm has a base end portion supported by a support section provided at a vehicle, and is configured such that a wiping surface of the vehicle is wiped back and forth by a wiper blade coupled to a leading end portion of the wiper arm. The drive section is configured to displace at least a leading end portion side of the wiper arm in an up-and-down direction with respect to the wiping surface during back and forth movement of the wiper arm, irrespective of force the wiper blade receives from the wiping surface.

A wiper device including a wiper member that includes a wiper arm to which a wiper blade is coupled, a base end portion of the wiper arm being supported by a support section provided at a vehicle, and the wiper member being configured to of undergo displacement relative to the vehicle, a drive wheel that is rotatably supported by the wiper member at a position of the wiper member which is separated from the support section, and that rolls across a running face provided at the vehicle so as to displace the wiper member relative to the vehicle, and a motor that is supported by the wiper member so as to undergo displacement together with the wiper member, and that drives rotation of the drive wheel.