PISTON FOR DOOR CLOSURE

A piston for a door closure is provided to improve durability and reliability by forming the plate-shaped gear part having a rack gear and preventing the piston from being worn. A piston(10) for a door closure is composed of a rectangular mounting groove(3A) formed at one side of a connection member...

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Bibliographic Details
Main Author LEE, DUK HWAN
Format Patent
LanguageEnglish
Published 06.02.2007
Subjects
CHECKS FOR WINGS
DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION
FIXED CONSTRUCTIONS
KEYS
LOCKS
SAFES
WINDOW OR DOOR FITTINGS
WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THEFUNCTIONING OF THE WING
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Summary:A piston for a door closure is provided to improve durability and reliability by forming the plate-shaped gear part having a rack gear and preventing the piston from being worn. A piston(10) for a door closure is composed of a rectangular mounting groove(3A) formed at one side of a connection member(3) between first and second circular parts(1,2); and a plate-shaped gear part(5) formed with a rack gear(5A) at one side to be tooth-geared with a pinion gear rotatably combined from the body in the mounting groove. The piston is movably combined from the inside of the body to press a pressure coil spring by the door pressure transferred through the pinion gear. The mounting groove is formed with a rectangular recessed part(3B) inside. A circular recessed groove(2A) is formed on the outer peripheral surface of the second circular part, and an oil ring(R) is combined in the circular recessed groove with a square section.
Bibliography:Application Number: KR20050074858