Rodless power cylinder

摘要

A rodless power cylinder includes a cylinder body, a piston assembly adapted to reciprocate in the cylinder body, a magnet mounted at each of the two ends of the piston assembly, a valve mounted at each of the two ends of the cylinder body for guiding a flow of air or fluid in and out of the cylinder body to cause the piston assembly to reciprocate, a magnetic sensor mounted in a sensor mounting groove at each of the two valves for sensing the position of the respective magnet, a movable member mounted around the cylinder body and coupled to the piston assembly by a magnetic force for synchronous reciprocating motion.

主权项

1. A rodless power cylinder, comprising:
a cylinder body; a piston assembly movable back and forth in said cylinder body, said piston assembly comprising a rod shaft, a magnetic coupling mounted around said rod shaft, two pistons mounted at said rod shaft at two opposite sides relative to the magnetic coupling of said piston assembly, and two magnets respectively located at the two distal ends of said rod shaft; two valves respectively mounted in two distal ends of said cylinder body, each said valve comprising an air hole for guiding a flow in and out of said cylinder body, a sensor mounting groove and a magnetic sensor mounted in said sensor mounting groove for sensing one said magnet; and a movable member comprising a magnetic coupling, said movable member being mounted around the periphery of said cylinder body, the magnetic coupling of said movable member being secured to the magnetic coupling of said piston assembly by a magnetic force for enabling said movable member to be reciprocated with said piston assembly, wherein said sensor mounting groove is located on one end face of the respective said valve and extended from an outer thread around the periphery of the respective said valve to a buffer chamber in the respective said valve.