Patent ID: 8881613

Claim:
An electric actuator, comprising: an actuating mechanism ( 100 ) including an actuating shaft ( 120 ) and a screw rod ( 130 ) screwed to and driving the actuating shaft ( 120 ); a motor ( 200 ) connecting and driving the screw rod ( 130 ); and a manual adjustment mechanism ( 300 ) including a connection seat ( 310 ), a coupling ring ( 320 ), a support ring ( 330 ), a cylindrical connector ( 340 ), and a knob ( 360 ), the connection seat ( 310 ) connected to the actuating shaft ( 120 ), the connection seat ( 310 ) including a positioning post ( 314 ) and a rotary shaft ( 315 ) axially extending from the positing post ( 314 ), the coupling ring ( 320 ) sleeved around and rotating with the positing post ( 314 ), a slide slot ( 322 ) disposed on the external peripheral wall of the coupling ring ( 320 ), the support ring ( 330 ) sleeved around the rotary shaft ( 315 ), one end of the cylindrical connector ( 340 ) sleeved around the support ring ( 330 ), the other end of the cylindrical connector ( 340 ) screwed to a hinge end cap ( 350 ), a locking slot ( 343 ) communicating with the slide slot ( 322 ) and disposed on the external peripheral wall the cylindrical connector ( 340 ), the knob ( 360 ) sleeved around the cylindrical connector ( 340 ) and the coupling ring ( 320 ) and covering the rotary shaft ( 315 ), a raised rib ( 361 ) slidably connected to the slide slot ( 322 ) and the locking slot ( 343 ) and disposed on the internal wall of the knob ( 360 ), whereby the coupling ring ( 320 ) can be selected to move together with or move separately with the cylindrical connector ( 340 ) by means of an axial movement of the knob ( 360 ).