| 摘要 |
PURPOSE: A piston assembly of a cooler is provided to allow convenient work coupling a piston and a mover of a linear motor and to improve productivity by coupling the piston and the mover of the linear motor in a glove box, placing a nut in the mover of the linear motor, and coupling the piston to the mover using a small bolt or a small screw placed on an outside of the piston, and mounting a hemispheric rubber cover to the nut placed on an inside of the mover. CONSTITUTION: A piston assembly includes a magnet sleeve formed as a hollow cylinder, and having a plurality of magnets attached on a periphery of one end of the cylinder, and a coupling part formed on an inside of the other end of the cylinder; and a hollow cylindrical piston inserted and mounted to a hollow of the magnet sleeve, and having a flange part coupled to face the coupling part. A bolt member(410) is inserted to an outside of the flange part of the piston, and a nut member(420) is coupled to the bolt member to face the bolt member from the coupling part of the magnet sleeve to couple the coupling part of the magnet sleeve and the flange part of the piston.
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