Patent ID: 8276799
Filing Date: 2012-10-02
Classification: B25C

Abstract:
1. A front-depression stapling device comprising a device body, a depressing bar pivotally mounted to the device body, a link plate driven by the depressing bar, and a staple striking assembly that is liftable and releasable by the link plate, wherein: the device body has two ends respectively forming a staple striking end and a coupling end, the device body comprising a depressing end on the same side of the staple striking end, the device body receiving therein a staple-striking spring plate that has a free end inserted into and engaging the staple striking assembly, the device body having a lower portion receiving therein a selectively removable and replaceable staple magazine in which staples are loaded; the depressing bar is pivotally mounted inside the coupling end of the device body, the depressing bar having a top portion forming a depressing section extending toward the depressing end of the device body, a resilient element being arranged between the depressing bar and the device body, the depressing bar being pivotally connected to a press-down seat, the press-down seat having an opposite end that is pivotally connected to the link plate; the link plate is pivotally mounted to the device body, the link plate having and end to which a lifting member is provided for selectively engaging and moving the staple striking assembly, the lifting member being transversely movable with respect to a side surface of the link plate and automatically returnable to a home position, the lifting member having an end forming an engaging piece; and the staple striking assembly comprises an upper strike plate that is vertically movable inside the staple striking end of the device body, the upper strike plate forming a strike guide slot extending vertically along a central axis of the upper strike plate, the upper strike plate forming a guide board that is bent sideway on a side of the strike guide slot, the guide board having a lower end forming an engaging end that is engageable with the engaging piece of the lifting member, the guide board being connected to a guide flange that corresponds to the strike guide slot above the engaging end, the upper strike plate having a lower end to which a lower strike plate that is selectively extendable out of a lower end of the device body is mounted; wherein when in use, the depressing section is depressed down toward the device body, the depressing bar depresses the pivoting end of the link plate thereby making the lifting member upward raised; and when the depressing bar is continuously depressed down, the lifting member raises the staple striking assembly to a predetermined height level and the staple-striking spring plate is simultaneously forced upward by the staple striking assembly, and when the engaging piece slides off the engaging end of the upper strike plate, the engaging piece is guided by the guide flange of the upper strike plate to move into the strike guide slot of the upper strike plate thereby causing the lifting member to shift sidways, and therefore causing the staple-striking spring plate to act upon the staple striking assembly to strike downward to drive a staple located below the lower strike plate.