Extendable instrument cabinet

Abstract

An extendable instrument cabinet includes a rectangular framework and an extension frame assembly. By the extension frame assembly connected to the rectangular framework, the instrument cabinet can enhance its capacity. The extension frame assembly includes an end frame and a side frame. The rectangular framework can be selectively mounted with the end frame or the side frame, as desired. Besides, the rectangular framework can be mounted with more than one end frame or more than one side frame in conjunction with fasteners, through holes, end frame through holes, and side frame through holes. Furthermore, each of the end frame and the side frame has a bottom provided with a foot structure for supporting its weight.

1 . An extendable instrument cabinet, comprising:
 a rectangular framework including four support racks erected at four corners thereof, an upper frame connected to upper ends of the four support racks, and a lower frame connected to lower ends of the four support racks to form front and rear ends and left and right sides, each of the upper frame, the lower frame and the support racks being formed with a plurality of through holes; and   an extension frame assembly corresponding in size to the left and right sides of the rectangular framework, the extension frame assembly including a side frame, at least two side frame through holes, and at least two fasteners, the side frame through holes being formed on the side frame, by the fasteners inserted through the side frame through holes and the through holes of the support racks, a first side of the side frame being connected to the support racks at the left or right side of the rectangular framework.   
     
     
         2 . The extendable instrument cabinet as claimed in  claim 1 , wherein the side frame has a bottom provided with a foot structure, the foot structure including a top end and a fixing rod, the top end being fixedly connected to one end of the fixing rod, another end of the fixing rod being inserted through the bottom of the side frame. 
     
     
         3 . The extendable instrument cabinet as claimed in  claim 1 , wherein the side frame has a second side opposite to the first side, the second side of the side frame being connected with one or more than one side frame. 
     
     
         4 . An extendable instrument cabinet, comprising:
 a rectangular framework including four support racks erected at four corners thereof, an upper frame connected to upper ends of the four support racks, and a lower frame connected to lower ends of the four support racks to form front and rear ends and left and right sides, each of the upper frame, the lower frame and the support racks being formed with a plurality of through holes; and   an extension frame assembly corresponding in size to the front and rear ends of the rectangular framework, the extension frame assembly including an end frame, at least two end frame through holes, and at least two fasteners, the end frame through holes being formed on the end frame, by the fasteners inserted through the end frame through holes and the through holes of the support racks, a first end of the end frame being connected to the support racks at the front or rear end of the rectangular framework.   
     
     
         5 . The extendable instrument cabinet as claimed in  claim 4 , wherein the end frame has a bottom provided with a foot structure, the foot structure including a top end and a fixing rod, the top end being fixedly connected to one end of the fixing rod, another end of the fixing rod being inserted through the bottom of the end frame. 
     
     
         6 . The extendable instrument cabinet as claimed in  claim 4 , wherein the end frame has a second end opposite to the first end, the second end of the end frame being connected with one or more than one end frame. 
     
     
         7 . An extendable instrument cabinet, comprising:
 a rectangular framework including four support racks erected at four corners thereof, an upper frame connected to upper ends of the four support racks, and a lower frame connected to lower ends of the four support racks to form front and rear ends and left and right sides, each of the upper frame, the lower frame and the support racks being formed with a plurality of through holes; and   an extension frame assembly including an end frame, at least two end frame through holes, a side frame, at least two side frame through holes, and a plurality of fasteners, the side frame corresponding in size to the left and right sides of the rectangular framework, the end frame corresponding in size to the front and rear ends of the rectangular framework, the side frame through holes being formed on the side frame, by the fasteners inserted through the side frame through holes and the through holes of the relative support racks, a first side of the side frame being connected to the relative support racks at the left or right side of the rectangular framework, the end frame through holes being formed on the end frame, by the fasteners inserted through the end frame through holes and the through holes of the relative support racks, a first end the end frame is connected to the relative support racks at the front or rear end of the rectangular framework.   
     
     
         8 . The extendable instrument cabinet as claimed in  claim 7 , wherein the end frame has a bottom provided with a foot structure, the foot structure including a top end and a fixing rod, the top end being fixedly connected to one end of the fixing rod, another end of the fixing rod being inserted through the bottom of the end frame. 
     
     
         9 . The extendable instrument cabinet as claimed in  claim 7 , wherein the side frame has a bottom provided with a foot structure, the foot structure including a top end and a fixing rod, the top end being fixedly connected to one end of the fixing rod, another end of the fixing rod being inserted through the bottom of the side frame. 
     
     
         10 . The extendable instrument cabinet as claimed in  claim 7 , wherein the side frame has a second side opposite to the first side, the second side of the side frame being connected with one or more than one side frame. 
     
     
         11 . The extendable instrument cabinet as claimed in  claim 7 , wherein the end frame has a second end opposite to the first end, the second end of the end frame being connected with one or more than one end frame.