Classifications

• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
  • A45D26/00—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers
• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
  • A45D26/00—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers
  • A45D26/0061—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers with means for reducing pain during hair removal
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
  • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
  • B26B19/26—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the type performing different methods of operation simultaneously, e.g. reciprocating and oscillating; of the type having two or more heads of differing mode of operation
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
  • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
  • A45D26/00—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers
  • A45D26/0023—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers with rotating clamping elements
• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
  • A45D26/00—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers
  • A45D26/0066—Tweezers
  • A45D26/0071—Tweezers the hair being extracted automatically, i.e. without manual traction by the user
  • A45D26/0076—Tweezers the hair being extracted automatically, i.e. without manual traction by the user power-driven

Definitions

• the present invention relates to a method for cosmetic body hair removal and a hair removal device.
• epilators are used for permanent hair removal, which try to tear out the hair with the root for the longest possible reduction of the body hair density.
• the proportion of root removed during epilation depends strongly on the plucking speed and in particular on the plucking direction.
• epilators have rotary epilating rollers on the circumference of which tweezer-like clamping elements are initially opened to capture the body hair and then brought into their clamping position so that the hairs clamped by the clamping elements are plucked out by the rotational movement of the depilation roller.
• Such an epilator shows, for example, DE 10 2004 047 875 A1, which proposes a three-dimensional rib-shaped clamping structure for the tweezer-type clamping tools in order to clamp the hair to be sponged firmer, nevertheless nonetheless gently.
• the Auszupfraum is not perpendicular, but inclined at an acute angle to the skin surface. In this case, instead of the desired tearing with a high proportion of roots, the hair may simply be torn off.
• the cyclic divergence and collapse of the tweezer-like clamping tools is mechanically complicated to realize, since in addition to the rotational movement of the epilating also the adjusting movement of the clamping elements is to be generated.
• a simply constructed device is to be created, which allows effective vertical hair removal with the lowest possible sensation of pain by acting as perpendicular to the skin surface train on the hair to be removed.
• the hairs grasped by the gripping elements are pulled out of the skin in a plurality of strokes, between which the gripping elements are moved apart and moved closer to the skin for follow-up and are brought together again.
• the follow-up takes place so fast that the already a little bit pulled hair can move back only slightly due to its viscoelastic anchoring of the hair root and in any case has not reached its initial position yet.
• the follow-up is repeated so quickly that the hair can not move back into its starting position fast enough, but is pulled out successively.
• the sensation of pain can be significantly reduced, also can be increased when removing the extracted root component.
• even very short hair can be better grasped, since the gripping elements are repeatedly guided to the skin.
• the drive of the gripping elements is designed such that within a cycle of movement, the lifting height of the closed gripping elements is smaller than the necessary movement to complete plucking a hair movement. The lifting height of the drive is thus limited that the gripping elements are opened again before a hair detected by it is completely plucked out.
• the hair removal process according to the invention is also intended to cover the process of hair removal.
• the hair is pulled out of the skin in at least two consecutive micro-strokes without picking the hair and then the hair is separated, in particular by cutting off or cutting off, so that a Haarwurzelanteil is not torn, but the hair after the Let go through the gripping elements back into the hair channel, advantageously such that the remaining hair residue no longer protrudes beyond the skin surface.
• the gripping of the gripping elements by moving apart, moving the gripping elements back against the plucking direction and again bringing the gripping elements together takes place in particular such that the same gripping elements grasp a plucked out hair several times without intervening other gripping elements coming into engagement with the hair to be plucked.
• various gripping elements do not continuously stroke one after the other over the hair to be processed. Skin section, but the same gripping elements are oscillated back and forth.
• the gripping elements are extended and retracted substantially perpendicular to a frontal working surface of the device with which the device can be guided on or over the skin surface.
• an extremely small plucking angle can be achieved with respect to the longitudinal direction of the hair root, as a result of which a higher root share than in the case of conventional depilation systems with an epilating roller can be removed.
• the lifting movement of the gripping elements need not necessarily take place in a translatory oscillatory movement along an axis perpendicular to the aforementioned fictitious working surface.
• the lifting movement of the gripping elements takes place at an angle between 30 ° and 150 °, in particular between 60 ° and 120 °, preferably 75 ° to 105 °, to the skin surface or the frontal working surface of the device with which the device which is feasible or over the skin surface.
• this angular range is preferably plucked in hair growth direction.
• the entire stroke movement does not have to take place in this angular range, in particular when the lifting movement does not take place purely translationally along an oscillation axis.
• the essential part of the lifting movement in particular at least 2 I 3 of the lifting height, in the aforementioned angular range.
• the Plucking unit be integrated in a roller, wherein the plucking unit tugs vertically, but the roller is rotatably mounted, so that in a hair growing direction deviating from the vertical to the skin surface in hair growth direction - plucked by the superimposed movement of roller and plucking unit.
• the gripping elements are driven in a further development of the invention with a stroke frequency of more than 500 Hz. Further preferred is a drive frequency of the gripping elements of more than 1 kHz.
• the opening and closing movement of the gripping elements takes place in the plane of the lifting movement of the gripping elements. This makes it sufficient to support the gripping elements biaxially movable and / or form the drive biaxial. A spatial movement or a third axis of motion is not required, even if this would be possible in principle.
• the lifting movement of the gripping elements can take place substantially in the form of a flattened ellipse whose longitudinal axis is advantageously at least twice as long as the transverse axis of the elliptical trajectory. It is understood that in this case not exactly an elliptical trajectory in the mathematical sense must be described, but also oval or similarly flattened trajectories can be provided, which may also have a small spatial component, i. perpendicular to the plane of the ellipse.
• the drive is designed such that the two gripping elements of each cooperating pair of gripping elements are driven on opposite, in the aforementioned sense substantially elliptical trajectories.
• the movement component parallel to the longitudinal axis of the elliptical trajectories causes the lifting movement, while the movement component causes the gripping movement of the gripping elements toward one another parallel to the transverse axes of the ellipse. It is understood that in this case the resulting trajectory of each gripping element is not really elliptical, at least in the sections where the two Gripping elements are pressed on each other.
• a co-movement path for these two gripping elements can be provided in principle, in which case advantageously the movement centers of the two trajectories are sufficiently far apart, so that the gripping elements a gripping movement towards each other and run away from each other.
• the drive for the gripping elements may be piezoelectric.
• piezoelectric actuators can be provided by which the gripping elements can be driven in accordance with high frequency.
• linear motors or other high-frequency positioning systems are also suitable as actuators.
• two actuators per "ellipse" can be used.
• the gripping elements can be fastened to preferably plate-shaped carriers, which are mutually independently movable at least biaxially.
• several gripping elements of different pairs of gripping elements can be attached to each carrier.
• the respective left gripping elements can be fastened to the one carrier, while the respectively right gripper elements of a gripping element pair are fastened to the respectively second carrier.
• the preferably plate-shaped carrier for the gripping elements can itself be mounted biaxially movable.
• the carriers can also be elastically flexible such that the gripping and lifting movements of the gripping elements are produced by elastic deformation of the carrier.
• the elastic supports can be deformed in undulating form by piezoelectric actuators, as a result of which the gripping elements fastened thereto are moved toward one another or away from one another and on the other hand in the direction of lifting movement.
• FIG. 1 shows a schematic basic representation of the drive cycle of the gripping elements of an epilator according to a preferred embodiment of the invention, wherein the different sections of a movement cycle are shown in a total of six representations,
• Fig. 2 is a schematic perspective view of the storage and the drive of the gripping elements of Fig. 1 according to an advantageous embodiment of the invention
• FIG. 3 shows a schematic overall view of an epilating device according to an embodiment of the invention for clarifying the directions of movement of the gripping elements.
• the epilating device 1 shown schematically in FIG. 3 comprises a cubic hand part 2, in which a control, an electricity supply part, for example in the form of a battery and a drive can be accommodated, and a working head 3 in the form of an attachment part which can be connected to the hand part 2 4, on which a plurality of gripping elements 5 to be described in more detail are provided.
• the working head 3 defines with its end face 6 a fictitious working plane or surface 7, with which the epilating device 1 and its gripping elements 5 are guided onto or over the skin surface 8 of the body member 9 to be processed.
• a multiplicity of gripping elements 5 are fastened to two plate-shaped carriers 10 and 11, in each case pairwise associated with each other, so that the one gripping element of a gripping element pair on the carrier 10 and the other gripping element of this gripping element pair is attached to the other carrier 11.
• the gripping elements 5 are each about tweezer-like, advantageously because of the inertia and for a high integration density as thin as possible, for example in the form of roughly speaking plate-shaped metal bodies.
• the facing clamping surfaces 12 of the gripping elements 5 are advantageously formed sharp or possibly even rough designed to exercise a sufficiently high plucking force on the hair can.
• the clamping surfaces 12 can have protruding, preferably sharp clamping edges 13. point.
• the drive 14 for moving the gripping elements 5 comprises in the illustrated embodiment piezoactuators 15, which operate in two dimensions and are coupled to the plate-shaped carriers 10 and 11.
• the carriers 10 and 11 are mounted two-dimensionally movable, in the direction of the drawn in Figure 2 x-axis and z-axis, ie perpendicular to the aforementioned fictitious working surface 7 of the epilator 1 and perpendicular to the clamping plane defined by two mutually pressed gripping elements 5 16, which is defined by the drawn in Figure 2 z and y axes.
• these can also be designed to be elastically deformable, for example formed by sufficiently thin metal plates, so that the carriers 10 and 11 can be deformed wave-shaped by the piezoactuators 15 in order to be described in greater detail To generate drive movements of the gripping elements 5.
• the two carriers 10 and 11 and thus the attached gripping elements 5 are driven in opposite directions along substantially elliptical or oval trajectories 17 whose longitudinal axis 18 substantially perpendicular to the aforementioned working surface 7 of the epilator and the transverse axis of the 19th is substantially parallel to the said work surface 7 and perpendicular to the clamping plane 16 of the gripping elements 5 extends.
• the gripping elements 5 successively pass through the stations of a cycle of movement shown in FIG. 1.
• the gripper elements 5 are moved apart, as shown in FIG. 1.
• a lowering movement to the skin surface 8 the gripping elements 5 are thus extended substantially substantially perpendicular to the aforementioned working surface 7 of the epilator 1, at the end of this lowering movement, the gripping elements 5 are moved together, thereby seizing a plucked hair 20 and between to pinch, cf. FIG. 1.
• a lifting movement takes place in the opposite direction to the abovementioned lowering movement, advantageously substantially perpendicular to the skin surface 8 and the imaginary working surface 7 of the depilation apparatus 1, ie the gripping elements 5 are returned to the interior of the depilation apparatus 1. pulled.
• the lifting movement is limited so that the gripped hair 20 is not completely pulled out, but only a micro drawing takes place.
• the gripping elements 5 are moved apart again, as shown by the representation d) in Figure 1, whereby a cycle of movement of the gripping elements 5 would be completed.
• the operating frequency of the drive 14 is so high that the renewed lowering and closing, which illustrates the representation e) in Figure 1, so quickly done that the hair 20 can not move back fast enough to its original position.
• the viscoelastic anchoring of the hair root would in fact cause such a return movement, since with the first stroke the hair was not completely plucked out of the anchorage.
• this return movement is subject to a specific time function, to which the Nachkraft- or return movement of the gripping elements 5 is adjusted. Specifically, the follow-up takes place so fast that no or only a slight return movement of the hair can take place.
• FIG. 1 f after the closing, a renewed micro-stroke is performed by the gripping elements 5, as a result of which the gripped hair 20 is pulled further out. These micro-strokes are repeated until the hair is completely pulled out.
• the hair 20 to be removed is therefore pulled out successively in several strokes, the gripping elements 5 being opened between the strokes, driven back onto the skin and closed again in order to follow the hair further down.
• the hair 20 does not have to be completely plucked out. It is also possible, after a certain picking distance, i. after a certain number of micro strokes, turn off the lowering of the gripping elements 5 in order to clip off the hair 20 by the high-frequency opening and closing movement of the gripping elements 5 or by an intensified movement of the gripping elements 5. As a result, the hair is not grasped again, but pulled back by relaxing the hair root tissue. With a sufficiently large plucking path the hair end disappears under the skin surface.
• the hair removal device is a combination of epilator and razor.
• the slightly pulled out hair as described above
• the slightly pulled out hair is then snapped off or cut off / cut off by a separate cutting element or a blade or a long-hair trimmer. This then moves the remaining hair residue with the hair root back into the skin and is ideally neither visible nor noticeable.

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• Life Sciences & Earth Sciences (AREA)
• Forests & Forestry (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Health & Medical Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Pain & Pain Management (AREA)
• Surgical Instruments (AREA)
• Dry Shavers And Clippers (AREA)
• Manipulator (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38894709

Family Applications (1)

Country Status (7)

Cited By (3)

Citations (2)

Family Cites Families (8)

• 2006
  • 2006-09-14 DE DE200610043307 patent/DE102006043307A1/de not_active Withdrawn
• 2007
  • 2007-08-25 WO PCT/EP2007/007477 patent/WO2008031495A1/de active Application Filing
  • 2007-08-25 CN CN200780034289.7A patent/CN101516230B/zh not_active Expired - Fee Related
  • 2007-08-25 RU RU2009113810/12A patent/RU2422068C2/ru not_active IP Right Cessation
  • 2007-08-25 EP EP07801902A patent/EP2061354B1/de not_active Not-in-force
  • 2007-08-25 JP JP2009527712A patent/JP5329413B2/ja not_active Expired - Fee Related
  • 2007-08-25 ES ES07801902T patent/ES2396253T3/es active Active

Patent Citations (2)

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