To provide a drive device, especially, the drive device for a hatch in a vehicle, which can protect a discrete member of the drive device from a load peak and a damage which may occur as the result, and realizes low cost and simple structure.
The drive device has a case pipe (7) combinable with a base portion (1) or a movable structure portion (3), a protection pipe (14) combinable with the movable structure portion (3) or the base portion (1), a spindle (33) with a screw, and a spindle nut (45) fitted to the spindle (33) with a screw. And the drive device has a spindle drive device, which makes the case pipe (7) and the protection pipe (14) movable axially relative to one another, and a rotary drive (18) which includes at least one electric motor (19) rotatably driving the spindle drive device. The drive device has safety circuits (28, 28', 28'', 28''') that cause a braking effect on the rotary drive (18) when the rotary drive (18) is deactivated and when extraneous forces are introduced into the drive device (5) from the outside.
| JPH09213182 | MOTOR PROTECTOR |
| JP2003018883 | FAN PROTECTION DEVICE |
| JP2001016880 | MOTOR CONTROLLER |
| JPH11501799A | 1999-02-09 | |||
| JPS4988038A | 1974-08-22 | |||
| JPS508021A | 1975-01-28 | |||
| JPS60207475A | 1985-10-19 | |||
| JP2006311658A | 2006-11-09 |
| DE102007054448B3 | 2009-03-26 |
Hironori Honda
Toshimitsu Ichikawa
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