Patent ID: 8161839
Filing Date: 2012-04-24
Classification: B62D

Abstract:
1. An electrically powered tilt steering device of a motor vehicle, comprising: a jacket unit that rotatably receives therein a steering shaft, the jacket unit being pivotable relative to a vehicle body through a first pivot mechanism; a swing arm that is pivotably connected to the vehicle body through a second pivot mechanism, a first free part of the swing arm being pivotably connected to the jacket unit; a first screw rod member rotatably held by the jacket unit, the first screw rod member having a hollow end portion with a splined cylindrical inner surface; a nut member operatively engaged with the first screw rod member such that rotation of the first screw rod member about an axis thereof induces a movement of the nut member on and along the first screw rod member, the nut member being pivotably connected to a second free part of the swing arm; an electric actuator held by the jacket unit and including an output shaft that has an end portion with a splined cylindrical outer surface, and a holding structure that rotatably holds a second end portion of the first screw rod member on the jacket unit and restrains an axial movement of the first screw rod member, wherein the splined cylindrical inner surface of the first screw rod member engages the splined cylindrical outer surface of the output shaft such that the first screw rod member is rotatable by the output shaft, and such that the first screw rod member is axially movable relative to the output shaft.