Patent ID: 7268922

Claim:
A chassis-locking apparatus, comprising: a rod part, a push part and a hitting part; a socket capable of receiving a plug, the socket comprising a groove having at least a closed end and an open end, and capable of receiving the push rod so that at least a portion of the hitting part of the push rod projects from the open end of the groove; and a locking element comprising an axis, a locking part at a first end, and a bearing part at a second end, the axis capable of coupling the locking element, the locking part capable of rotating about the axis, and the locking part capable of securing a corresponding fixing part of a chassis of the scanner, a position of the bearing part corresponding to a position of the hitting part of the push rod; and wherein if a plug is inserted into the socket, the plug is capable of pushing the push part of the push rod and extending the push rod along the groove; wherein the hitting part of the push rod is capable of pushing the bearing part of the locking element to make the locking element rotate about the axis so that the locking part separates from the fixing part of the chassis; and wherein the closed end is capable of contacting the push rod if the push rod is extended a full length of the groove toward the closed end.