| 摘要 |
PURPOSE: An electric steering device is provided to improve a driving performance by stably supporting a worm shaft according to the driving state of a vehicle by controlling pressure to the worm shaft. CONSTITUTION: An electric steering device(1) comprises a worm shaft unit(10), a worm wheel unit(20), a case unit(30), a support unit(40), a pressurization unit, and a motor unit(60). The worm shaft unit comprises a worm gear(11). The worm wheel unit engages with the worm gear in order to rotate and is combined with a steering shaft(70). The case unit is internally equipped with a worm shaft unit and worm wheel unit. The supporting unit is built in the case unit and supports the end of the worm shaft unit. The pressurization unit pressurizes the supporting unit by being installed in the case unit and keeps the worm shaft unit and worm wheel unit to be engaged by controlling pressure according to the driving state of a vehicle. The motor unit is combined in the case unit and rotates the worm shaft unit by connecting a motor shaft to the worm shaft unit. [Reference numerals] (53) Sensing unit; (54) Control unit
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