Anti-pinch electric linear actuator for electric adjustable furniture

An anti-pinch electric linear actuator for the movable components of adjustable furniture, the anti-pinch electric linear actuator comprising:

• an outer tube;
• an inner tube extending into the outer tube in a way that the inner tube has an inner end located inside the outer tube, and an outer end located outside the outer tube;
• a lead screw extending inside the outer tube and the inner tube;
• a nut screwed onto the lead screw and located inside the outer tube, the nut having an abutment portion, which the inner end of the inner tube can contact the abutment portion and the inner end of the inner tube can separate from the abutment portion;
• a motor to drive the nut, said motor mounted in the outer tube;
• and
• a sensing unit disposed to the outer tube, the inner tube, or the nut for detecting whether the abutment portion of the nut is in contact with the inner end of the inner tube;
• and
• wherein the inner tube of the linear actuator will move when the abutment portion of the nut is in contact with the inner end of the inner tube, but will not move when the abutment portion of the nut is not in contact with the inner end of the inner tube.