SHIFT-BY-WIRE DEVICE

• Main Author: KATO TAISHI
• Format: Patent
• Language: English; Japanese
• Published: 12.09.2019
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BLASTING; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERATION; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL; WEAPONS

To provide a shift-by-wire device which can avoid that a voltage in a drive circuit is boosted when releasing a lock state.SOLUTION: A shift-by-wire device 20 comprises an ECU 50 for switching a shift range by controlling the drive of a motor 41, and operating a parking lock mechanism by the motor so as to be brought into a lock state when a parking range is selected, and an unlocked state when the other range other than the parking range is selected. The ECU comprises wiring including a land 57a as a discharge conductor for releasing the energy of an electromotive force which is generated when the motor is forcibly rotated by a lock release tool to the land in a state that an IG switch of a vehicle is turned off.SELECTED DRAWING: Figure 3 【課題】ロック状態を解除する際に駆動回路内の電圧が上昇するのを抑制できるシフトバイワイヤ装置を提供すること。【解決手段】シフトバイワイヤ装置２０は、モータ４１の駆動を制御することによりシフトレンジの切り替えを行い、パーキングレンジが選択されるとロック状態となり、パーキングレンジ以外が選択されると非ロック状態となるように、モータによってパーキングロック機構を作動させるＥＣＵ５０を備えている。ＥＣＵは、車両のＩＧスイッチがオフされた状態で、外部からモータを回転させるためのロック解除ツールが接続されたときに、ロック解除ツールによりモータが強制回転されて生じる逆起電力のエネルギをグランドに逃がす放出導体として、ランド５７ａを含む配線を備えている。【選択図】図３