Handle assembly having lock mechanism

Abstract

A handle assembly having a lock mechanism is disclosed. The handle assembly includes a handle grip member movably coupled to the casing for receiving a first external force and a second external force, and a lock mechanism installed in the casing and coupled with the handle grip member for locking the handle grip member when the handle grip member receives the first external force and unlocking the handle grip member when the handle grip member receives the second external force.

What is claimed is:  
     
         1 . A handle assembly for using in an appliance, wherein said appliance has a casing, comprising: 
 a handle grip member movably coupled to said casing for receiving a first external force and a second external force; and    a lock mechanism installed in said casing and coupled with said handle grip member for locking said handle grip member when said handle grip member receives said first external force and unlocking said handle grip member when said handle grip member receives said second external force.    
     
     
         2 . The handle assembly according to  claim 1 , wherein said lock mechanism comprises: 
 a first spring disposed in said casing for extension and compression responding to said first external force and said external second force;    a second spring disposed in said casing for extension and compression responding to said first external force and said external second force;    a supporting member having a slot thereon and positioned in said casing;    a sliding member having one end coupled to said handle grip member and slidably disposed adjacent to said first spring in said casing for sliding and lodging in said slot of said supporting member when said handle grip member receives said first external force and for leaving said slot of said supporting member when said handle grip member receives said second external force; and    an engaging member having a cylinder mounted thereon and positioned between said second spring and said sliding member in said casing for engaging with said second spring and said sliding member.    
     
     
         3 . The handle assembly according to  claim 2 , wherein said sliding member has a receptacle thereon for engaging with said cylinder mounted on said engaging member.  
     
     
         4 . The handle assembly according to  claim 2 , wherein said engaging member further has a protruding portion which can project from an aperture in the bottom of said casing for completely locking said handle grip member when said handle grip member receives said first external force and draw away from said aperture of said casing for completely unlocking said handle grip member when said handle grip member receives said second external force.  
     
     
         5 . A lock mechanism, adapted to be used in an appliance having a casing, to be coupled with an article movably coupled to said casing for locking said article when said article receives a first external force and unlocking said article when said article receives a second external force, comprising: 
 a first spring for extension and compression responding to said first external force and said second external force;    a second spring for extension and compression responding to said first external force and said second external force;    a supporting member having a slot thereon;    a sliding member having one end coupled to said article and slidably disposed adjacent to said first spring for sliding and lodging in said slot of said supporting member when said article receives said first external force and for leaving said slot of said supporting member when said article receives said second external force; and    an engaging member having a cylinder mounted thereon and positioned between said second spring and said sliding member for engaging with said second spring and said sliding member.    
     
     
         6 . The lock mechanism according to  claim 5 , wherein said sliding member has a receptacle thereon for engaging with said cylinder mounted on said engaging member.  
     
     
         7 . The lock mechanism according to  claim 5 , wherein said engaging member further has a protruding portion which can project from an aperture of said article for completely locking said article when said article receives said first external force and draw away from said aperture of said article for completely unlocking said article when said article receives said second external force.  
     
     
         8 . The lock mechanism according to  claim 5 , wherein said article is a handle grip.  
     
     
         9 . An appliance assembly, comprising: 
 a casing having an aperture thereon;    a handle grip member movably coupled to said casing for receiving a first external force and a second external force; and    a lock mechanism installed in said casing and coupled with said handle grip member for locking said handle grip member when said handle grip member receives said first external force and unlocking said handle grip member when said handle grip member receives said second external force.    
     
     
         10 . The appliance assembly according to  claim 9 , wherein said lock mechanism comprises: 
 a first spring disposed in said casing for extension and compression responding to said first external force and said second external force;    a second spring disposed in said casing for extension and compression responding to said first external force and said external second force;    a supporting member having a slot thereon and positioned in said casing;    a sliding member having one end coupled to said handle grip member and slidably disposed adjacent to said first spring in said casing for sliding and lodging in said slot of said supporting member when said handle grip member receives said first external force and for leaving said slot of said supporting member when said handle grip member receives said second external force; and    an engaging member having a cylinder mounted thereon and positioned between said second spring and said sliding member in said casing for engaging with said second spring and said sliding member.    
     
     
         11 . The appliance assembly according to  claim 10 , wherein said sliding member has a receptacle thereon for engaging with said cylinder mounted on said engaging member.  
     
     
         12 . The appliance assembly according to  claim 10 , wherein said engaging member further has a protruding portion which can project from said aperture of said casing for completely locking said handle grip member when said handle grip member receives said first external force and draw away from said aperture of said casing for completely unlocking said handle grip member when said handle grip member receives said second external force.  
     
     
         13 . The appliance assembly according to  claim 9 , wherein said aperture is in the bottom of said casing.  
     
     
         14 . The appliance assembly according to  claim 9  is a retractable power module.