Plain-English summary
Problem
How can vibration in electric motors and rotors be reduced?
Solution
linear actuator with a cushion mechanism includes: an actuator body ( 10 ) having a motor ( 13 ), a lead screw ( 151 ), an outer pipe ( 152 ) and a retractable pipe ( 153 ), the lead screw ( 151 ) is driven by the motor ( 13 ), the retractable pipe ( 153 ) has a screw nut ( 157 ); a rapid release mechanism ( 30 ) disposed on the lead screw ( 151 ) and releasing a driving relation of the motor ( 13 ) and the lead screw ( 151 ); and a cushion mechanism ( 50 ) disposed in the actuator body ( 10 ) and having an elastic member ( 51 ) and a deceleration structure ( 53 ).
Key novelty
When the rapid release mechanism ( 30 ) is released, the lead screw ( 151 ) rotates while the retractable pipe ( 153 ) being loaded, the screw nut ( 157 ) compresses the elastic member ( 51 ) to make the deceleration structure ( 53 ) generate a brake, thus a rotation speed of the lead screw ( 151 ) is lowered.
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