HAIR CUTTING UNIT WITH PREVENTION OF KNIFE BLOCKING Russian patent published in 2022 - IPC B26B19/14 

FIELD: shaving devices.

SUBSTANCE: hair cutting unit for use in a shaving device comprises external and internal cutting components. Inner cutting component comprises cutting elements with cutting edges. Outer cutting component comprises elements for guiding hair with counter-cutting edges. Interacting edges form a cut angle. During rotation, the cutting edge meets the counter-cutting edge in the radial position of initial passage. On the section in the specified radial position of initial passage and perpendicular to the radial direction only one of the inner cutting component and the outer cutting component has a thrust geometry. When the hair guide element is depressed in the direction of the rotary cutting element, thrust geometry is effective for repulsion of depressed element for guiding hair and rotating cutting element in axial direction from each other. Cutting element passes by the hair guiding element without blocking and without causing significant damage in case of collision. Invention also includes a shaving unit and a shaving device.

EFFECT: improved hair cutting characteristics.

16 cl, 8 dwg