Patent ID: 7464471
Filing Date: 2008-12-16
Classification: B26B

Abstract:
1. A reciprocation type electric shaver having an outside blade unit detachable from a main body, the outside blade unit comprising: a main blade configured by an outside blade having a plurality of blade holes and an inside blade which reciprocally moves in a longitudinal direction of the outside blade unit to contact an inner face of the outside blade; a slit blade configured by a stationary blade having a substantially comb shape and a moving blade which reciprocally moves in the longitudinal direction to contact an inside face of the stationary blade such that the slit blade is configured to float up and down in a direction transverse to the reciprocation direction of the outside blade unit; an outside blade holder to hold the main blade; a coupling structure to couple the slit blade on the outside blade holder in the longitudinal direction capable of floating up and down; and a retaining structure configured to engage the slit blade with the coupling structure on the outside blade holder in a lateral direction of the outside blade unit so as to prevent disengagement of the slit blade from the outside blade holder when the slit blade floats up and down with inclination, the retaining structure being defined by a pair of fitting recesses provided on the slit blade and a pair of fitting protrusions provided on the coupling structure and protruding in the lateral direction facing each other, and the pair of fitting protrusions of the coupling structure configured to engage the pair of fitting processes of the slit blade in a plane defined by the longitudinal direction and the lateral direction.