Shredder which can shred small media

#1. Field of the Invention

#The present invention relates to a shredder. More specifically, the present invention discloses a shredder capable of shredding a little medium.

#2. Description of the Prior Art

#FIG. 1a is a diagram of a prior art shredder.

#FIG. 1b is a diagram of a shredding device of the prior art shredder.

#FIG. 2 is a diagram when the shredder of FIG. 1 is shredding a little medium.

#Please refer to FIG. 3a and FIG. 3b. FIG. 3a is a diagram of a present invention shredder 40. FIG. 3b is a diagram of a shredding device 48 of the present invention shredder 40. The shredder 40 comprises a housing 42, a long and narrow entry slot 44 formed on the housing 42 for inserting a shredding medium 46, the shredding device 48 installed inside the housing 42 for shredding the medium 46, and a central trigger 50 for sensing the medium 46 and therefore starting the shredding device 48. As shown in FIG. 3b, the shredding device 48 comprises two shredding knives 52, 54, and a shredding gap 56 formed between the two shredding knives 52, 54. The central trigger 50 is installed above the central portion of the shredding gap 56. The shredder 40 further comprises a side trigger 58 installed between the central portion and an end of the shredding gap 56 for sensing a little medium.

#As shown in FIG. 3b, the shredding knives 52, 54 are two cylinder knives and are parallel to each other. Each shredding knife 52, 54 comprise two ends 62, 64, and 66, 68. The corresponding ends of two shredding knives are fixed to each other. As shown in FIG. 3b, the corresponding position of end 62 and end 66 is fixed by the housing 70 of the shredding device 48. Ends 66 and 68 are fixed in the same way. Therefore, the mechanical structure of the two ends of the shredding gap 48 is stronger than the mechanical structure of the central portion.

#As shown in FIG. 3b, the shredder 40 further comprises a transmission rod 72 installed above the shredding gap 56 and substantially parallel to the shredding gap 56. The central trigger 50 and side trigger 58 are two protrusions on the transmission rod 72. When the central trigger 50 or the side trigger 58 is pushed by inserting the medium 46, the trigger will cause the transmission rod 72 to rotate so as to activate a relay 74, starting the shredding device 48.