Patent ID: 8763176
Filing Date: 2014-07-01
Classification: A61G

Abstract:
1. A lift device comprising: a base frame; a main frame comprising a fixing member longitudinally formed in an up and down direction, coupled to the base frame, and a movable member movably provided in an up and down direction; a bed unit connected to the movable member, positioned in front of the main frame; an operation unit having an end connected to the movable member or the bed unit and the other end extended forwardly, with a ring-shaped operation control part provided in the other end thereof to put a user's finger thereon; and a driving unit configured to move the movable member upwardly based on input of the operation control part, wherein the operation control part comprises an upper input means positioned in an inner top surface thereof to upwardly move the movable member based on an input signal and a lower input means position in an inner bottom surface thereof to downwardly move the movable member based on an input signal, wherein the upper input means and the lower input means include a strain gauge respectively which measures an electrical resistance value of the strain gauge itself based on an external pressure applied by the user's finger and a driving speed of the main driving unit is varied according to the electrical resistance value measured.