WIPER MOTOR AND CONTROL METHOD

• Main Authors: KISHINO RYOSUKE, IINO EISUKE, OSAWA TAKESHI
• Format: Patent
• Language: English; Japanese
• Published: 30.04.2020
• Subjects: PERFORMING OPERATIONS; SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, ORMANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR; TRANSPORTING; VEHICLES IN GENERAL

To provide a wiper motor that can execute failure determination using a temperature detection sensor when performing overheat protection for a motor, and a control method.SOLUTION: In the wiper motor according to the embodiment, a control part has: a first temperature sensor that detects a temperature of the wiper motor; a second temperature sensor, arranged adjacent to the first temperature sensor, which detects a temperature of the wiper motor; a temperature difference calculating part that calculates a temperature difference between the first temperature sensor and the second temperature sensor; a determining part that determines a state where the temperature difference between the first temperature sensor and the second temperature sensor surpasses a first threshold; an abnormality determining timer that measures time elapsing after the determining part determines that the temperature difference surpasses the first threshold; and a motor state change part that changes rotation of the motor part when the temperature difference surpasses the first threshold and the time measured by the abnormality determining timer surpasses first prescribed time.SELECTED DRAWING: Figure 3 【課題】モータの過熱保護を行う際の故障判定を、温度検出センサを使用して実施することができるワイパモータおよび制御方法を提供する。【解決手段】本実施形態のワイパモータは、制御部が、前記ワイパモータの温度を検出する第１の温度センサと、前記ワイパモータの温度を検出し、前記第１の温度センサに近接して配置された第２の温度センサと、前記第１の温度センサと前記第２の温度センサとの温度差を算出する温度差算出部と、前記第１の温度センサと前記第２の温度センサとの温度差が第１閾値を超えた状態を判定する判定部と、前記判定部によって、前記温度差が前記第１閾値を超えたときからの経過時間を計測する異常判定タイマと、前記温度差が前記第１閾値を超え、かつ、前記異常判定タイマによって計測された時間が第１の所定の時間を超えたときに前記モータ部の回転を変更するモータ回転状態変更部と、を有する。【選択図】図３