Patent ID: 8640562
Filing Date: 2014-02-04
Classification: F16H,Y10T

Abstract:
1. A table frame having adjustable height, comprising a linear actuator, comprising: a drive shaft; a transmission connected to the drive shaft; a spindle connected to the transmission, the drive shaft, the transmission and the spindle being connected in such a way that a rotational movement of the drive shaft is transmitted to the spindle via the transmission, a spindle nut arranged rotationally prevented onto the spindle such that the spindle nut moves along the spindle when the spindle is rotated, an end stop detection unit for detecting that the spindle nut reaches an end position on the spindle, wherein the end stop detection unit comprises an end stop detection shaft connected to the transmission in such a way that a rotational movement of the spindle is transmitted to the end stop detection shaft such that a rotational movement of the spindle is reflected by a rotational movement of the end stop detection shaft, wherein the spindle has a substantially vertical extension and the drive shaft has a substantially horizontal extension, and wherein the end stop detection shaft lies in substantially the same horizontal plane as the drive shaft, wherein the end stop detection unit further comprises two disconnecting switches arranged at different positions along the end stop detection shaft, each position representing an end position for the spindle nut along the spindle, and wherein at least a first of the disconnecting switches is movably arranged along the end stop detection shaft.