Cabinet having double locking mechanism

Abstract

In a cabinet having a double locking mechanism, a cabinet has a case, an ejection portion installed to be capable of being ejected from the inside of the case and on which various devices can be mounted, and a door sealing the case, so that the door can be locked to the ejection portion and the door locked to the ejection portion is locked to the case. Thus, since the case can only be opened by an authorized person, the cabinet is safe.

What is claimed is:  
     
         1 . A cabinet having a double locking mechanism comprising: 
 a case having a space portion therein, in which one side portion thereof is open to the outside;    an elevation portion installed at side walls in the case facing each other and having at least one hook unit provided thereon;    an opening unit connected to the elevation portion in a state of being supported at one side wall of the case, for moving the elevation portion upward;    a locking unit installed at one side wall of the case, for preventing the upward movement of the elevation portion;    an ejection portion accommodated in the case to be capable of ejected from the case by way of a sliding movement; and    a door hinge-coupled to the ejection portion and covering the front surface of the ejection portion, sealing the case by moving toward the case together with the ejection portion in the state of covering the front surface of the ejection portion, and having a catching member provided on the inner surface thereof and coupled to the hook unit.    
     
     
         2 . The cabinet as claimed in  claim 1 , wherein the elevation portion comprises a first elevation member supported at one side wall and disposed vertically in the case and a second elevation member supported at the other side wall parallel to the first elevation member and elevating concurrently with the first elevation member, 
 the hook unit is an elevation hook extending from each of the first and second elevation members toward the door and then bent downward,    first and second pivot hooks are provided at the lower portions of the respective elevation hooks, the first and second pivot hooks having middle portions pin-coupled to the first and second elevation members to be capable of rotating with respect to the first and second elevation members, rear end portions extending toward a rear wall of the case, and leading end portions extending toward the door and then bent downward, and    the rear end portions of the first and second pivot hooks coupled to both ends of a shaft supported at the rear wall to be capable of rotating so that a pivot torque of the first pivot hook is transferred to the second pivot hook.    
     
     
         3 . The cabinet as claimed in  claim 2 , wherein the opening unit converts a torque generated by rotating a key inserted from the outside of the case to a vertical movement of the first elevation member, the opening unit comprising a key insertion portion fixed at one side wall of the case and rotating around an axis when a key is inserted into a key hole formed therein from the outside of the case, and a rotary link fixed to the key insertion portion, pin-coupled to the first elevation member, and rotating circularly according to the rotation of the key insertion portion.  
     
     
         4 . The cabinet as claimed in  claim 2 , wherein the locking unit prevents upward movement of the first elevation member by being rotated by a rotational force generated as a key inserted from the outside of the case is rotated, the locking unit comprising a key insertion portion rotatably supported at one side wall of the case corresponding to a path along which the first elevation member moved upward and having a key hole formed therein, a stopper rotating circularly by the rotation of the key insertion portion, separated a predetermined distance from the key insertion portion, and preventing the first elevation member from moving upward by hooking the first elevation member.  
     
     
         5 . The cabinet as claimed in  claim 1 , wherein guide rails are provided at the upper and lower portions of both side walls of the case parallel to each other, 
 the ejection portion comprises a lower flat plate contacting the inner surface of the door to be capable of sliding horizontally by being guide by the lower guide rail  24 , an upper flat plate parallel to the lower flat plate and contacting the inner surface of the door to be capable of sliding horizontally by being guided by the upper guide rail, and a vertical frame fixing and supporting the upper and lower flat plates parallel to each other,    the upper and lower flat plates have a installation space formed by cutting a predetermined width and length from the leading end portion toward the rear side of the respective upper and lower flat plates and a hook rod is installed horizontally in each of the installation space, and    an elastic hook coupled to the hook rod when the door is pressed against the ejection portion is installed at the inner surface of the door corresponding to each of the hook rods, and a connection rod controlling the elastic hook is connected to the upper and lower elastic hooks and so that the elastic hooks coupled to the hook rods are simultaneously separated from the hook rods.    
     
     
         6 . The cabinet as claimed in  claim 5 , wherein the elastic hook comprises a hook housing fixed at the inner wall of the door corresponding to the hook rod, a hook member installed in the hook housing having an inclined surface formed at the leading end portion which is pressed by the hook rod when approaching the hook rod and a hook groove formed in the upper surface into which the hook rod passing along the inclined surface is inserted, and an elastic unit for elastically supporting the leading end portion of the hook member upward, and the connection rod is pin-coupled to the hook member corresponding to the rear side of the hook groove.  
     
     
         7 . The cabinet as claimed in  claim 6 , wherein the rear end portion of the hook member is pin-coupled by a support shaft to the hook housing, and the elastic unit is a spring wound around the support shaft and having one end supported at the inner wall of the upper portion of the hook housing and the other end pushing a bottom surface of the hook member toward the leading end portion to elastically press the leading end portion upward.  
     
     
         8 . The cabinet as claimed in  claim 2 , wherein at least one slot is formed in each of the first and second elevation members to guide the elevational movement of the first and second elevation members, an elevation guide pin inserted in each of the slots is fixed at both inner side walls of the case, and an idle pin is horizontally provided at the upper end portion of the first and second elevation members.  
     
     
         9 . The cabinet as claimed in  claim 8 , wherein a fixed hook is provided at the inner surface of the door, which comprises an inclined surface to ascend the idle pin when the fixed hook enters under the idle pin, and a hook groove for accommodating the idle pin passing the inclined surface.  
     
     
         10 . The cabinet as claimed in  claim 9 , wherein catching members are formed on the inner surface of the door, into which the elevation hooks of the first and second elevation members and the insertion portions of the first and second pivot hooks raised as the inclined surface of the fixed hook moves the idle pin upward are inserted.