A trash bin of the shredder consists of an inner bin and an outer bin. When the user inserts the inner bin into the outer bin, a bolt assembly combines the inner bin and the outer bin. An energy storing element of a pushing mechanism stores energy to push the inner bin out. The user can trigger the bolt assembly by depressing or stepping to release the energy stored in the energy storing element. The inner bin automatically jumps out for the user to clean trash paper therein.
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