US 11,052,402 B2
Automatic paper shredder with staple removing structure and staple removing method using same
Chung Shih Tsai, Hawthorne, CA (US); Er Ren Zhong, Shanghai (CN); and Taokuei Chuang, Shanghai (CN)
Assigned to Aurora Office Equipment Co., Ltd. Shanghai, Shanghai (CN)
Filed by Aurora Office Equipment Co., Ltd. Shanghai, Shanghai (CN)
Filed on Feb. 28, 2019, as Appl. No. 16/289,524.
Prior Publication US 2021/0138478 A1, May 13, 2021
Int. Cl. B02C 18/00 (2006.01); B02C 18/14 (2006.01); B02C 18/22 (2006.01)
CPC B02C 18/0007 (2013.01) [B02C 18/142 (2013.01); B02C 18/2283 (2013.01); B02C 2018/003 (2013.01); B02C 2018/0038 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An automatic paper shredder with a staple removing structure, comprising:
a paper holding box;
a shredder cover, pivotally connected with one end of the paper holding box and closing or opening the automatic paper shredder;
a shell disposed below the paper holding box and fixedly connected with the paper holding box;
a paper holding plate disposed on an upper end face of an inner side of the paper holding box for holding a stack of paper placed thereon by users;
a paper inlet formed in the paper holding plate and divides the paper holding plate into a first paper holding plate part and a second paper holding plate part;
a paper shredding component having a first cutter shaft and a second cutter shaft, wherein the first cutter shaft and the second cutter shaft are respectively disposed below a left side and a right side of the paper inlet and are used in cooperation to shred paper entering the paper inlet;
a paper pick-up component including a paper pick-up roller shaft and paper pick-up rollers, which is disposed inside a first paper holding plate part and is close to the paper inlet, and the paper pick-up rollers are telescoped around the paper pick-up roller shaft, and wherein upper parts thereof partially protrude from an upper surface of the first paper holding plate part via paper pick-up holes formed in the first paper holding plate part, so that the paper pick-up rollers are driven by the drive motor to rotate, and a bottom piece of paper in the stack of paper placed on the paper holding plate is driven by the paper pick-up rollers to move towards an inner wall of the paper holding box and then to move reversely under a counteracting force of the inner wall, the bottom piece of paper being deformed at the paper inlet so as to move downwardly to enter the paper inlet;
a drive motor disposed inside the paper holding box, and connected with the first cutter shaft, the second cutter shaft and the paper pick-up component, wherein the drive motor drives the first cutter shaft and the second cutter shaft, and causes the paper pick-up component to operate;
a paper pressing plate elastically connected to a lower end face of the shredder cover through a plurality of elastic components, disposed correspondingly to an upper surface of the paper holding plate and tightly presses against the stack of paper placed on the paper holding plate when the users close the shredder cover;
a waste paper bin disposed inside the shell and is used for collecting paper scraps;
a straight through-hole located in one side or two sides of the paper holding plate and is communicated with the waste paper bin for removing staples or clips fallen into the waste paper bin located on a lower portion of the paper shredder through the straight through-hole; and
a staple removing component located at an end of the first paper holding plate part away from the paper inlet, or located at an end of the second paper holding plate part away from the paper inlet, and the staple removing component used to abut against the staple or clip with a vertical surface while the paper pressing plate tightly presses against the stack of paper on the paper holding plate, so that the staple deflects and is separated from the bottom piece of paper when the bottom piece of paper in the stack of paper enters the paper inlet.