Safety lock mechnaism of a lighter

Abstract

A safety lock mechanism of a lighter, including a lighter main body, a press key and a safety shift plate. A gas container for containing gas and an ignition unit are disposed in the lighter main body. The press key is disposed on upper side of the ignition unit. A top side of the press key is formed with a slot perpendicular to a pressing direction of the press key. The safety shift plate is slidably disposed in the slot of the press key. The safety shift plate is pushed by a resilient member, whereby in normal state, one end of the safety shift plate extends into a dent of the lighter main body to restrict the press key from being pressed down. Under such circumstance, the lighter is in a locked safety state. When a user desires to ignite the gas, the user only needs to first outward push the safety shift plate along the slot with a finger. At this time, the end of the safety shift plate is extracted from the dent and the press key is released from the restriction. Then the key press can be pressed down to activate the ignition unit for ignition.

1 . A safety lock mechanism of a lighter, comprising: 
 a lighter main body in which a gas container and an ignition unit are disposed, a bracket being disposed a surface of the lighter main body beside the ignition unit, the bracket being formed with a dent near top end of the bracket;    a press key disposed on upper side of the ignition unit, a top side of the press key being formed with a slot perpendicular to a pressing direction of the press key, when the press key naturally ascends, one end of the slot extending to one side of the bracket and being aligned with the dent of the bracket; and    a safety shift plate slidably disposed in the slot of the press key, one end of the safety shift plate having a projecting push sect ion, a bottom of the other end of the safety shift plate being formed with a receiving space in which a resilient member is accommodated, the resilient member being compressed between a stop section at one end the slot and the safety shift plate, whereby in natural state, the push section of the safety shift plate resiliently extends into the dent of the bracket so that the press key is restricted from being pressed down for ignition, when the safety shift plate is pushed outward away from the lighter main body, the push section being extracted out of the dent to release the press key, whereby the press key can be then pressed down for ignition.    
   
   
       2 . The safety lock mechanism of the lighter as claimed in  claim 1 , wherein an adjustment member is back and forth movably disposed at one end of the slot of the press key, the adjustment member serving to press the resilient member in the slot to different extents, whereby the resilient member can exert different pushing forces onto the safety shift plate for optimally restoring the safety shift plate to its home position.  
   
   
       3 . The safety lock mechanism of the lighter as claimed in  claim 2 , wherein the adjustment member is a bolt passing through the stop section of the slot from outer side to inner side.  
   
   
       4 . The safety lock mechanism of the lighter as claimed in  claim 1 , wherein an exhaust valve is disposed on a top side of the gas container, a projecting fulcrum being disposed between the exhaust valve and the ignition unit, a middle section of a link being rested on the fulcrum, one end of the link being connected with the exhaust valve, the other end of the link extending to a position under the press key to be pressed by the bottom of the press key, a resilient member being disposed under the other end of the link for upward-pushing the other end of the link, whereby when the press key is pressed down, the link opens the exhaust valve in cooperation with the ignition unit for igniting the gas ejected from the exhaust valve.  
   
   
       5 . The safety lock mechanism of the lighter as claimed in  claim 2 , wherein an exhaust valve is disposed on a top side of the gas container, a projecting fulcrum being disposed between the exhaust valve and the ignition unit, a middle section of a link being rested on the fulcrum, one end of the link being connected with the exhaust valve, the other end of the link extending to a position under the press key to be pressed by the bottom of the press key, a resilient member being disposed under the other end of the link for upward pushing the other end of the link, whereby when the press key is pressed down, the link opens the exhaust valve in cooperation with the ignition unit for igniting the gas ejected from the exhaust valve.  
   
   
       6 . The safety lock mechanism of the lighter as claimed in  claim 3 , wherein an exhaust valve is disposed on a top side of the gas container, a projecting fulcrum being disposed between the exhaust valve and the ignition unit, a middle section of a link being rested on the fulcrum, one end of the link being connected with the exhaust valve, the other end of the link extending to a position under the press key to be pressed by the bottom of the press key, a resilient member being disposed under the other end of the link for upward pushing the other end of the link, whereby when the press key is pressed down, the link opens the exhaust valve in cooperation with the ignition unit for igniting the gas ejected from the exhaust valve.  
   
   
       7 . The safety lock mechanism of the lighter as claimed in  claim 4 , wherein the exhaust valve is connected with a nozzle disposed in the bracket for burning the gas and generating flame.  
   
   
       8 . The safety lock mechanism of the lighter as claimed in  claim 5 , wherein the exhaust valve is connected with a nozzle disposed in the bracket for burning the gas and generating flame.  
   
   
       9 . The safety lock mechanism of the lighter as claimed in  claim 6 , wherein the exhaust valve is connected with a nozzle disposed in the bracket for burning the gas and generating flame.  
   
   
       10 . The safety lock-mechanism of the lighter as claimed in  claim 1 , wherein a cap is pivotally disposed on the surface of the lighter main body for covering the nozzle and the press key.  
   
   
       11 . The safety lock mechanism of the lighter as claimed in  claim 2 , wherein a cap is pivotally disposed on the surface of the lighter main body for covering the nozzle and the press key.  
   
   
       12 . The safety lock mechanism of the lighter as claimed in  claim 3 , wherein a cap is pivotally disposed on the surface of the lighter main body for covering the nozzle and the press key.  
   
   
       13 . The safety lock mechanism of the lighter as claimed in  claim 4 , wherein a cap is pivotally disposed on the surface of the lighter main body for covering the nozzle and the press key.  
   
   
       14 . The safety lock mechanism of the lighter as claimed in  claim 5 , wherein a cap is pivotally disposed on the surface of the lighter main body for covering the nozzle and the press key.  
   
   
       15 . The safety lock mechanism of the lighter as claimed in  claim 6 , wherein a cap is pivotally disposed on the surface of the lighter main body for covering the nozzle and the press key.  
   
   
       16 . The safety lock mechanism of the lighter as claimed in  claim 7 , wherein a cap is pivotally disposed on the surface of the lighter main body for covering the nozzle and the press key.  
   
   
       17 . The safety lock mechanism of the lighter as claimed in  claim 8 , wherein a cap is pivotally disposed on the surface of the lighter main body for covering the nozzle and the press key.  
   
   
       18 . The safety lock mechanism of the lighter as claimed in  claim 9 , wherein a cap is pivotally disposed on the surface of the lighter main body for covering the nozzle and the press key.