Patent ID: 9193087
Filing Date: 2015-11-24
Classification: B26D,B26F,Y10T

Abstract:
1. A cutter which is detachably attachable to a support member, the cutter comprising: a shaft made of a resin and having a smaller-diameter portion and a larger-diameter portion with a larger diameter than the smaller-diameter portion, the smaller-diameter portion and the larger-diameter portion being formed integrally with the shaft, the smaller-diameter portion being rotatably supported by a plurality of bearings provided on the support member, the larger-diameter portion having a proximal end surface abutting on an end surface of one of the bearings, with a result that the cutter is locked in a state where an axial position of the cutter relative to the support member is immovable; a flat blade provided on a first end which is a distal end of the larger-diameter portion, the flat blade cutting an object to be cut; a metal member which can be attracted by a magnet provided on the support member, the metal member being provided on a second end which is a distal end of the smaller-diameter portion; a plurality of contact portions provided on axially differing portions of the shaft respectively, the contact portions being capable of contacting the bearings respectively; and a plurality of thinned parts provided between the contact portions and extending in the axial direction of the shaft.