Personal care device as well as a cutting unit for such a personal care device

A personal care device provided with at least one cutting unit, each cutting unit comprising:

• an external cutting member and an internal cutting member which is moveable relative to the external cutting member in at least one direction of movement,
• wherein the internal cutting member includes a plurality of cutting elements each having a first cutting edge,
• wherein a projection of the first cutting edges in a virtual skin plane, which is located on a side of the external cutting member facing away from the internal cutting member and which extends parallel to said direction of movement and parallel to a skin surface when the cutting unit is in an operational position relative to the skin surface, encloses at least a first shearing angle with said direction of movement,
• wherein the external cutting member includes a plurality of hair-entry apertures each having a second cutting edge for cooperation with at least one of the first cutting edges,
• wherein a projection of the second cutting edges in the virtual skin plane encloses at least a second shearing angle with the direction of movement,
• characterized in that, for at least a percentage of at least 60 of all the hair-entry apertures of the external cutting member each having the second cutting edge for cooperation with at least one of the first cutting edges of the internal cutting member, the projections of the first and second cutting edges in a plane extending perpendicularly to the direction of movement enclose, respectively, a first inclination angle and a second inclination angle with the virtual skin plane of the cutting unit,
• wherein the first and second inclination angles and the first and second shearing angles are selected such that, at least in a starting position of cutting a virtual cylindrical hair with a diameter of 150 microns situated in a cutting position in the hair-entry aperture and extending perpendicularly to the virtual skin plane, the first cutting edge is in contact with the virtual cylindrical hair in a first contact position and the second cutting edge is in contact with the virtual cylindrical hair in a second contact position, and
• wherein the first contact position is closer to the virtual skin plane than the second contact position.