Abstract: A subrack (1) includes a plurality of plug-in units (50), two parallel sidewalls (10, 20), a bottom wall (24), and a top wall (30). Each of the plug-in units includes a particular combination of code pins (60). Each of the bottom wall and top wall includes a first plate (35). The first plate defines a plurality of spaced slide channels (351) for slidably receiving the plug-in units respectively, and forms a plurality of L-shaped flakes (40) substantially in front of the slide channels respectively. Any one or more of a height, a length, and a deviation relative to the corresponding slide channel of each of the flakes varies relative to another one of the flakes according to different combinations of corresponding code pins, in order that the flakes respectively match the combinations of the corresponding code pins and thereby prevent improper insertion of the plug-in units into the subrack.

Abstract: A subrack (1) for use in industrial electronics includes two parallel sidewalls 10, bottom and top walls (40, 30) cooperatively defining a space therebetween for receiving plug-in units (50) therein. Each of the bottom and top walls includes a first plate (35) defining a number of spaced slide channels, and a second plate (31) fixed to the first plate. After the plug-in units slide into the subrack along the slide channels, mounting panels (52) of the plug-in units engage with fronts of the bottom and top walls thereby securing the plug-in units in the subrack. The first and second plates can be produced from sheet steel having a same thickness, which significantly reduces the manufacturing costs.

Abstract: A subrack (1) includes a plurality of plug-in units (50), a pair of parallel sidewalls (10, 20), a bottom wall (24) and a top wall (30). Each plug-in unit engages a combination of code pins (60). Each of the bottom wall and top wall includes a first plate (35) and a second plate (31) engaged with the first plate. The first plate defines a plurality spaced slide channels (351) for slidably receiving the plug-in units therein respectively, and forms a plurality of L-shaped flakes (40) corresponding to the combination of code pins in front of each slide channel. The height, length and deviation to slide channel of the flakes vary with different combinations of code pins on the mounting panel, in order to match the combinations of code pins and enable the plug-in units be inserted into the subrack for preventing from mis-inserting operation.

Abstract: A subrack (1) for use in industrial electronics includes two parallel sidewalls 10, bottom and top walls (40, 30) cooperatively defining a space therebetween for receiving plug-in units (50) therein. Each of the bottom and top walls includes a first plate (35) defining a number of spaced slide channels, and a second plate (31) fixed to the first plate. After the plug-in units slide into the subrack along the slide channels, mounting panels (52) of the plug-in units engage with fronts of the bottom and top walls thereby securing the plug-in units in the subrack. The first and second plates can be produced from sheet steel having a same thickness, which significantly reduces the manufacturing costs.