A sandwich-structured cutter and a hair trimmer, the cutter including two fixed blades, each of which has a row of teeth at the front end, and a movable blade, which is sandwiched between the two fixed blades, can reciprocate relative to the two fixed blades in the longitudinal direction, and is an integrated blade. The movable blade has a row of teeth at the front end, the front ends of the teeth of the movable blade do not protrude from the front ends of the teeth of the fixed blades, and each tooth of the movable blade has a quadrangular cross-section shape, which includes parallel first pair sides and second pair sides forming four acute angles with the first pair sides. The cutter and the hair trimmer can lower the probability that the user gets injured and the cutting efficiency is high.

Provided is an oscillating motor and electric clippers. The oscillating motor includes a U-shaped magnetic yoke, four permanent magnets and a swing arm. The U-shaped magnetic yoke causes end faces of two support legs to produce alternating magnetic poles with the control circuit. The four permanent magnets are fixedly mounted to an inner arm via a second magnetic yoke. The four permanent magnets are sequentially distributed on a same circumferential surface having a fulcrum being a circle centre. The polarities of radial end faces of the first permanent magnet and the fourth permanent magnet are the same. The polarities of radial end faces of the second permanent magnet and the third permanent magnet are the same, and the opposite of the polarity of the radial end face of the first permanent magnet. When a coil is electrified, the four permanent magnets produce torque having the same direction of rotation.

Provided is an oscillating motor and electric clippers. The oscillating motor includes a U-shaped magnetic yoke, four permanent magnets and a swing arm. The U-shaped magnetic yoke causes end faces of two support legs to produce alternating magnetic poles with the control circuit. The four permanent magnets are fixedly mounted to an inner arm via a second magnetic yoke. The four permanent magnets are sequentially distributed on a same circumferential surface having a fulcrum being a circle centre. The polarities of radial end faces of the first permanent magnet and the fourth permanent magnet are the same. The polarities of radial end faces of the second permanent magnet and the third permanent magnet are the same, and the opposite of the polarity of the radial end face of the first permanent magnet. When a coil is electrified, the four permanent magnets produce torque having the same direction of rotation.

According to an aspect, there is provided a guard plate (10) for a blade set (100) for a hair cutting appliance, the guard plate comprising a skin-facing side (12) and an opposing blade-facing side; a plurality of close-cutting trimming teeth (16) distributed in a longitudinal direction along an edge (18) of the guard plate, each tooth extending from the edge of the guard plate to a respective tip (20), the close-cutting trimming teeth having a thickness of less than (120) microns; a raised section (22) comprising a curved shape in a plane perpendicular to the longitudinal direction such that it is raised from the teeth towards the skin-facing side of the guard plate, wherein the curved shape of the raised section does not extend beyond a (30)-degree envelope defined by a line passing through the mg edge of the guard plate and offset from a tangent at the edge of the guard plate by (30) degrees; a pressure relenting zone (30) between the teeth and the raised section defining a continuous surface, wherein there is a transition (32) between the pressure relenting zone and the raised section such that, when the guard plate is passed over a user's taut skin, the skin does not directly follow the contours of the transition thereby locally reducing pressure from the skin; wherein a plurality of apertures (48) are distributed on the raised section at least within a pressure restoring zone (36) of the raised section, the pressure restoring zone being defined between a rising point and a tangent point, wherein the rising point is where a perpendicular distance from the skin-facing surface of the guard plate to a pressure relenting line peaks, wherein the pressure relenting line is defined by a tangent of the raised section in a plane perpendicular to the longitudinal direction, the tangent passing through the edge of the guard plate, and wherein the tangent point is on the raised section at the tangent of the pressure relenting line.

According to an aspect, there is provided a guard plate (10) for a blade set (100) for a hair cutting appliance, the guard plate comprising a skin-facing side (12) and an opposing blade-facing side; a plurality of close-cutting trimming teeth (16) distributed in a longitudinal direction along an edge (18) of the guard plate, each tooth extending from the edge of the guard plate to a respective tip (20), the close-cutting trimming teeth having a thickness of less than (120) microns; a raised section (22) comprising a curved shape in a plane perpendicular to the longitudinal direction such that it is raised from the teeth towards the skin-facing side of the guard plate, wherein the curved shape of the raised section does not extend beyond a (30)-degree envelope defined by a line passing through the mg edge of the guard plate and offset from a tangent at the edge of the guard plate by (30) degrees; a pressure relenting zone (30) between the teeth and the raised section defining a continuous surface, wherein there is a transition (32) between the pressure relenting zone and the raised section such that, when the guard plate is passed over a user's taut skin, the skin does not directly follow the contours of the transition thereby locally reducing pressure from the skin; wherein a plurality of apertures (48) are distributed on the raised section at least within a pressure restoring zone (36) of the raised section, the pressure restoring zone being defined between a rising point and a tangent point, wherein the rising point is where a perpendicular distance from the skin-facing surface of the guard plate to a pressure relenting line peaks, wherein the pressure relenting line is defined by a tangent of the raised section in a plane perpendicular to the longitudinal direction, the tangent passing through the edge of the guard plate, and wherein the tangent point is on the raised section at the tangent of the pressure relenting line.

A cutter head for an electric hair trimmer generally includes a cutting assembly having a stationary blade, a movable blade, and a follower connected to the movable blade. The electric hair trimmer has a handle with a drive system and an ejection mechanism. The follower is configured for operative connection with the drive system of the handle for oscillating the movable blade relative to the stationary blade. The cutter head also includes a housing having a tongue configured to provide clearance for the follower when the cutter head is ejected from the handle via the ejection mechanism.

A cutter head for an electric hair trimmer generally includes a cutting assembly having a stationary blade, a movable blade, and a follower connected to the movable blade. The electric hair trimmer has a handle with a drive system and an ejection mechanism. The follower is configured for operative connection with the drive system of the handle for oscillating the movable blade relative to the stationary blade. The cutter head also includes a housing having a tongue configured to provide clearance for the follower when the cutter head is ejected from the handle via the ejection mechanism.

The present disclosure relates to a stationary blade (42) for a blade set (26) of a hair cutting appliance (10), said blade set (26) being arranged to be moved through hair in a moving direction to cut hair, said stationary blade (42) comprising a support insert (70), and a metal component (68) at least sectionally deformed to define a toothed leading edge (32, 34) having double-walled stationary blade teeth (44), wherein the metal component (68) forms a first wall (100) that is arranged to serve as a skin-facing wall when in operation, and a second wall (102) that is facing away from the first wall (100), wherein the first wall (100) and the second wall (102) are joined at the toothed leading edge (32, 34), wherein the support insert (70) connects the first wall (100) and the second wall (102), wherein the metal component (68) is held in place by the support insert (70), and wherein the metal component (68) and the support insert (70) jointly form a guide slot (60) for a movable blade (62). The disclosure further relates to a blade set (26) and to a method of manufacturing a blade set (26) for a hair cutting appliance (10).

The present disclosure relates to a stationary blade (42) for a blade set (26) of a hair cutting appliance (10), said blade set (26) being arranged to be moved through hair in a moving direction to cut hair, said stationary blade (42) comprising a support insert (70), and a metal component (68) at least sectionally deformed to define a toothed leading edge (32, 34) having double-walled stationary blade teeth (44), wherein the metal component (68) forms a first wall (100) that is arranged to serve as a skin-facing wall when in operation, and a second wall (102) that is facing away from the first wall (100), wherein the first wall (100) and the second wall (102) are joined at the toothed leading edge (32, 34), wherein the support insert (70) connects the first wall (100) and the second wall (102), wherein the metal component (68) is held in place by the support insert (70), and wherein the metal component (68) and the support insert (70) jointly form a guide slot (60) for a movable blade (62). The disclosure further relates to a blade set (26) and to a method of manufacturing a blade set (26) for a hair cutting appliance (10).

The invention relates to an electric shaver comprising at least a first long hair cutter element that is provided with a first under cutter and a first, non-foil type upper cutter, wherein one or both of the first under cutter and the first upper cutter oscillate relative to the other in a direction parallel to an axis (x) and at least one guard that is provided adjacent to the second upper cutter and extends parallel to axis (x), the guard is provided with a comb structure having several teeth each being provided with a skin contact top portion and several slots being provided between the teeth each being having a low portion for guiding the hair in between and wherein the comb structure is provided as a micro comb structure having a depth of the slots from the top portion of the teeth to the low portion of the slots ranging between 0.2 to 0.7 mm.