Patent ID: 8205648

Claim:
An electric pencil sharpener comprising: a housing unit defining an accommodating space, said housing unit including a partition for dividing said accommodating space into an equipment-receiving space portion and a cutting space portion, and a front end portion formed with a first opening in spatial communication with said cutting space portion; a driving unit including a driving motor disposed in said equipment-receiving space portion, and a driving member driven by said driving motor; a cutting unit disposed within said cutting space portion and including an outer frame mounted removably to said partition, an inner frame disposed pivotally within said outer frame, and at least one cutting member disposed pivotally on said inner frame, said outer frame including a ring gear, said inner frame having a driven portion connected co-rotatably and removably to said driving member, and a cutting groove, said cutting member having a blade portion adjacent to said cutting groove, and a planetary gear portion meshing with said ring gear; and a panel unit mounted removably to said housing unit for covering said first opening, said panel unit having a pencil-feeding hole aligned with said cutting groove, wherein, when said panel unit is removed from said housing unit, said cutting unit can be taken out of said housing unit through said first opening; wherein said partition has a plate body, and a loop-shaped wall disposed on said plate body to define a mounting hole, said loop-shaped wall being formed with a plurality of spaced-apart retaining grooves each having an axial section extending in an axial direction of said mounting hole, and a circumferential section in spatial communication with said axial section and extending in a circumferential direction of said mounting hole, said outer frame of said cutting unit further including a rear end portion disposed within said mounting hole, and a plurality of spaced-apart positioning blocks disposed on an outer periphery of said rear end portion such that, during assembly of said outer frame to said loop-shaped wall of said partition, said positioning blocks are moved respectively into said axial sections of said retaining grooves and subsequently into said circumferential sections by rotating said outer frame within said mounting hole in a direction.