BLADE SET AND HAIR CUTTING APPLIANCE

摘要

The present invention relates to a hair cutting appliance (10), a blade set (20) for a hair cutting appliance (10), and to a stationary blade (22) for said blade set (20), said blade comprising a first wall portion (44) and a second wall portion (46), each wall portion defining a first surface (80, 82, 84), a second surface (86, 88, 90), and at least one toothed leading edge (32, 34) comprising a plurality of mutually spaced apart projections (36) provided with respective tips (38), wherein the first surfaces (80, 82) of the first wall portion (44) and the second wall portion (46) face each other, at least at their leading edges (32, 34), where in facing projections (36)along the leading edges (32, 34) of the first and second wall portions (46) are mutually connected at their tips (38) to define a plurality of teeth (40), wherein the first surfaces (80, 82) of the first wall portion (44) and the second wall portion (46) define there between a guide slot (76) for a movable blade (24) of said blade set (20), and wherein the first wall portion (44), at the second surface (86) thereof, comprises a smoothed transitional region (94), at least at the forwardly extending projections (36).

主权项

1. A stationary blade for a blade set of a hair cutting appliance, said blade set being arranged to be moved through hair in a moving direction to cut hair, said blade comprising
a first wall portion arranged to serve as a skin facing wall portion during operation, and a second wall portion, each wall portion defining a first surface, a second surface facing away from the first surface, and at least one toothed leading edge comprising a plurality of mutually spaced apart projections provided with respective tips, wherein the toothed leading edge at least partially extends in a transverse direction (Y, t) relative to the moving direction assumed during operation, wherein the mutually spaced apart projections 44) at least partially extend forwardly in a longitudinal direction (X, r) approximately perpendicular to the transverse direction (Y, t), wherein the first surfaces of the first wall portion and the second wall portion face each other, at least at their leading edges, wherein facing projections along the leading edges of the first and second wall portions are mutually connected at their tips to define a plurality of teeth, wherein the first surfaces of the first wall portion and the second wall portion define therebetween a guide slot for a movable blade of said blade set, wherein the first wall portion, at the second surface thereof, comprises a smoothed transitional region, at least at the forwardly extending projections, wherein the transitional region extends rearwardly from a substantially flat region of the first wall portion towards the second wall portion, thereby transitioning from the substantially flat region to respective tips of the forwardly extending projections, wherein the transitional region comprises a tip rounding at the teeth, wherein the tip rounding comprises at least a first edge rounding (Rt1) and a second edge rounding (Rt2), wherein the tip rounding is further tangentially connected to the second surface of the second wall portion, and wherein a ratio between the radii of the first edge rounding (Rt1) and the second edge rounding (Rt2) is greater than about 1.5:1, preferably greater than about 2:1, more preferably greater than about 2.5:1.