| 摘要 |
PROBLEM TO BE SOLVED: To increase the thrust applied by the output of a drive motor, or to decrease the drive output of the drive motor with the same thrust. SOLUTION: This electrically driving device of the furniture has a spindle rotated by a reduction transmission mechanism, a spindle nut prevented from rotation is fitted on the spindle, the spindle nut is provided with a lifting pipe, and the lifting pipe is movable with respect to an immobile flange pipe. At least one gas spring 21 to support the move-out motion of the lifting pipe 17 is disposed. A piston rod 22 of the gas spring is movable synchronous to the lifting pipe 17.
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