Delay drive-hanging device of a paper shredder

摘要

This invention is related to a delay drive-hanging device of a paper shredder. The paper shredder is provided with a linked delay device that maintains continuous driving force within the duration from insertion of paper between blade wheel shafts to termination of shredding operation so as to effectively grip and then strip the paper. The device is provided on the blade wheel shafts; the device drives and connects to a link dial by means of a belt. The link dial has an end that couples to a control cylinder by means of minute friction. A delay trigger for a paper entry dial is provided between a side of a paper entrance and the control cylinder. A micro-switch is connected to a primary circuit. The control cylinder has an end face having a notch that corresponds to and controls a retaining dial of the delay trigger. The control cylinder is provided on another side with a resilient press plate that corresponds to and controls a recovering dial. Further, the delay trigger is provided with a cantilever beam at a location adjacent the micro-switch such that insertion of paper changes orientation of the delay trigger to cause the cantilever beam to contact and to activate the micro-switch; after an end edge of the paper is gripped, the delay trigger is triggered by the retaining dial to recover to its original state, while the end face of the control cylinder urges against the micro-switch such that the micro-switch continues to be activated for a while until the control cylinder completes a full rotation subjecting the cantilever beam to sink in the notch so as to cease the driving force.