Patent ID: 7894080
Filing Date: 2011-02-22
Classification: B02C

Abstract:
1. A width and thickness detecting mechanism of a shredder for detecting a width of an article and adjusting an allowable thickness value of said article according to said width of said article, said width and thickness detecting mechanism comprising: a first width sensor disposed in a shredding path; a second width sensor disposed at a first side of said first width sensor; a third width sensor disposed at a second side of said first width sensor; a thickness detecting module disposed in said shredding path and comprising a sustaining element, a thickness detecting element, a first thickness sensor and a second thickness sensor, wherein said sustaining element is moved as said article is sustained against said sustaining element, said thickness detecting element is contacted with said sustaining element and rotated as said sustaining element is moved, said thickness detecting element includes a first detecting plate with multiple first sheltering parts and a second detecting plate with multiple second sheltering parts, said first thickness sensor realizes whether a thickness of said article is greater than a first allowable thickness value according to a rotating condition of said first sheltering parts, and said second thickness sensor realizes whether said thickness of said article is greater than a second allowable thickness value according to a rotating condition of said second sheltering parts; and a control unit connected to said first width sensor, said second width sensor, said third width sensor, said first thickness sensor and said second thickness sensor for controlling implementation or interruption of a shredding operation according to said width and said thickness of said article, wherein if any two of said first width sensor, said second width sensor and said third width sensor sense that said article enters said shredding path, said width of said article is deemed as a first article width and said control unit allocates said first thickness sensor to detect whether said thickness of said article is greater than said first allowable thickness value, or if all of said first width sensor, said second width sensor and said third width sensor sense that said article enters said shredding path, said width of said article is deemed as a second article width and said control unit allocates said second thickness sensor to detect whether said thickness of said article is greater than said second allowable thickness value.