Door-opening/closing device for use in vehicle

摘要

A door opening/closing device for use in a vehicle is provided with a driving member. The driving member has a permanent-magnet motor provided with two terminals and an output member, which is rotationally driven by the permanent-magnet motor. The driving member is mounted on either a vehicle body or a vehicle door and is coupled to the other via the output member. As the output member rotates, the vehicle door opens or closes. The door opening/closing device is also provided with a switching device configured to switch the permanent-magnet motor between an energizable state, in which the permanent-magnet motor can receive electricity through the two terminals, and a brake state, in which the terminals are short-circuited. The switching device switches the permanent-magnet motor into the brake state when the vehicle door is in any position other than the fully closed position.

主权项

1. A door opening and closing device for use in a vehicle, comprising:
a driving member including a permanent magnet motor with two terminals and an output member rotationally driven by the permanent magnet motor, wherein the driving member is configured to be located on one of a vehicle body or a vehicle door and connected to the other one of the vehicle body or the vehicle door via the output member, so that the vehicle door is opened and closed in accordance with rotation of the output member; and a switching unit configured to selectively switch the permanent magnet motor between an energizable state, in which the permanent magnet motor can receive electricity via the two terminals, and a brake state, in which the terminals are connected to each other so that the permanent magnet motor forms an electric closed-loop path and cannot receive electricity, wherein, when the vehicle door is at any operating position other than a fully closed position, the switching unit switches the permanent magnet motor into the brake state, wherein the switching unit is configured to switch the permanent magnet motor into the brake state when the switching unit is energized, and maintain the permanent magnet motor in the energizable state when the switching unit is de-energized.