| 摘要 |
PURPOSE: An electric cylinder is provided to accomplish speed deceleration control for precise and detailed advancing or retreating force in a device converting rotating force to linear moving force. CONSTITUTION: An electric cylinder comprises a driving motor(110) and a gear part(120) within a main body(101) of a case(100), a screw bar(125) and a cylinder rod(130) extended from the gear part(120) within an extended part(102). A bearing is arranged between the gear part(120) and the cylinder rod(130). The driving motor(110) is a clockwise/counterclockwise motor. The gear part(120) includes a sun gear(121), three planet gears(122), a guide gear(123), an inner gear(124) and the screw bar(125). The sun gear(121) is arranged at a rotating shaft of the driving motor(110). The planet gears(122) rotates engaged with the sun gear(121). The guide gear(123) guides the rotation of the planet gears(122). The inner gear(124) generates a rotating force from the rotation of the planet gears(122).
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