Patent ID: 6506046
Filing Date: 2003-01-14
Classification: F23Q

Abstract:
A piezoelectric lighter, comprising:a casing receiving a liquefied gas storage and an ignition cavity provided therein; a gas emitting nozzle disposed in said casing and communicating with said liquefied gas storage for controlling a flow of gas; a piezoelectric unit for generating piezoelectricity comprising a piezoelectric body, having a ceiling, disposed in said casing, a movable operating part upwardly extended from said piezoelectric body, and an ignition tip extended to a position close to said gas emitting nozzle, wherein when said movable operating part is depressed downwardly with respect to said piezoelectric body, said ignition tip generates sparks to ignite said gas emitted from said gas emitting nozzle; and a safety arrangement, comprising: an ignition button movably mounted on said casing in a vertical movable manner wherein said ignition button is attached to a top end of said piezoelectric unit and arranged in such a manner that when said ignition button is pushed downwardly, said movable operating part of said piezoelectric unit is depressed to ignite said piezoelectric lighter, wherein said ignition button has a guiding slot provided on a top portion thereof to communicate with outside; a locking member comprising a locking arm disposed in said ignition cavity of said casing and arranged to bias against said ceiling of said piezoelectric body for blocking up said ignition button from being depressed downwardly so as to lock up said ignition button from ignition and an operation button slidably mounted on said ignition button and arranged to operate said locking arm to move from a normally locking position to an unlocking position, wherein said locking arm has a blocking portion outwardly protruded therefrom to form a L-shape structure, wherein a bottom end of said blocking portion of said locking arm is arranged to rest on said ceiling of said piezoelectric body of said piezoelectric unit for locking said ignition button in a downward movable manner and a top edge of said blocking portion of said locking arm is adapted to bias against an enlarged top portion of said movable operating part of said piezoelectric unit, so as to block up a depression motion of said movable operating part of said piezoelectric unit to ignite said piezoelectric lighter; and a resilient element which is disposed in said ignition cavity for applying an urging pressure against said locking member so as to normally retain said locking member in said locking position, wherein at said locking position, said ignition button is locked for downward movement by said locking member so as to prevent ignition, and that in said unlocking position, said locking member is moved to release a blocking up of said ignition button with respect to said piezoelectric unit, so that said ignition button is capable of being depressed downwardly to ignite said piezoelectric lighter.