EP1926574A1 - Epilateur electrique - Google Patents

Epilateur electrique

Info

Publication number
EP1926574A1
EP1926574A1 EP06776742A EP06776742A EP1926574A1 EP 1926574 A1 EP1926574 A1 EP 1926574A1 EP 06776742 A EP06776742 A EP 06776742A EP 06776742 A EP06776742 A EP 06776742A EP 1926574 A1 EP1926574 A1 EP 1926574A1
Authority
EP
European Patent Office
Prior art keywords
hair removal
removal device
motor
skin
speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06776742A
Other languages
German (de)
English (en)
Other versions
EP1926574B1 (fr
Inventor
Bernhard Kraus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Braun GmbH
Original Assignee
Braun GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Braun GmbH filed Critical Braun GmbH
Publication of EP1926574A1 publication Critical patent/EP1926574A1/fr
Application granted granted Critical
Publication of EP1926574B1 publication Critical patent/EP1926574B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/46—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards providing for illuminating the area to be shaved or clipped
    • 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
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3873—Electric features; Charging; Computing devices
    • B26B19/388—Sensors; Control
    • 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

Definitions

  • the invention relates to an electric hair removal device. Furthermore, the invention relates to a method for removing hair from the human skin.
  • Electric hair removal devices are often operated by means of built-in batteries, especially rechargeable batteries. This can be avoided that the handling of the hair removal devices is hindered by cables. Since the storage capacity of the batteries is limited, the most efficient use of stored electrical energy is desirable. Much of the electrical energy used to operate the hair removal devices is not immediately used to remove the hair but is lost, for example, by friction in the driveline of the hair removal devices. This means that the operation of hair removal equipment even then results in a significant consumption of electrical energy, if no or only a few hairs are removed.
  • hair removal devices are often designed for the average expected operating conditions. However, this leads to the hair removal devices idle, d. H. if no hair is removed, cause vibration and noise, and at full load, d. H. if a lot of hair is removed, show an insufficient function. This undesirable behavior can be counteracted by controlling the speed of the drive motor of the hair removal devices.
  • an electric shaver which includes depending on the load current of the motor to a high or low density.
  • the motor is then controlled on the basis of the determined density of the beard.
  • the engine is operated at a low speed and at a high density of barbs at a high speed.
  • EP 0 719 202 B1 discloses a razor with an electric motor whose speed varies from a feedforward control unit as a function of at least one physical quantity.
  • the physical quantity is measurable by means of a pick-up which detects a sound signal for determining the hair cut per unit time, the shaving time which has hitherto elapsed or a skin contact force.
  • the invention has for its object to achieve a thorough hair removal with a hair removal device with low energy consumption.
  • the electric hair removal apparatus of the present invention for removing hair from the human skin has a hand-durable case, a mechanical hair removal device, and a motor for driving the hair removal device.
  • the peculiarity of the hair removal device according to the invention is that a sensor device is provided for generating a signal which depends on the speed with which the hair removal device is moved over the skin during hair removal.
  • An advantage of the hair removal device according to the invention is that by using the signal of the sensor device, a low energy consumption can be achieved and yet a thorough and skin-friendly hair removal is possible. In the case of battery operation results over known hair removal devices a longer battery life or it can be used batteries with reduced dimensions. In addition, even with rapid movements of the hair removal device relative to the skin, there is no painful pulling on the hair. Another advantage is that the noise level and the vibrations during operation of the hair removal device can be kept relatively low overall.
  • the sensor device may have at least one rotatably mounted rotary body.
  • the rotary body is preferably arranged to be rotated as the hair removal device is moved across the skin.
  • the sensor device may have a measuring transducer for direct or indirect detection of the rotation of the rotary body. In this way, the speed of the hair removal device relative to the skin can be detected by simple means.
  • the sensor device has a light source and a light sensor.
  • the light source is preferably arranged to irradiate the skin as the hair removal device is moved across the skin.
  • This embodiment of the sensor device has no moving parts and therefore has a long Lifespan.
  • a sensor device designed in this way works very reliably and precisely.
  • the hair removal device has a control device for controlling the motor depending on the signal of the sensor device. It can be provided that the control device controls or controls a movement amount of a component of the hair removal device to a first predefinable value, which depends on the signal of the sensor device. This means that the movement of this component depends on how quickly the hair removal device is moved across the skin. The amount of movement may, in particular, be a speed or a vibration amplitude of the component of the hair removal device.
  • control device may regulate or control a movement variable of the motor to a second predefinable value, which depends on the signal of the sensor device. It is advantageous if a motor sensor is provided for providing a signal for the control device, which depends on the amount of movement of the motor. The amount of movement can be a speed, a speed or a vibration amplitude of the motor. It is particularly advantageous if the control device determines the second predefinable value on the basis of the first predefinable value.
  • the hair removal device can be developed so that the control device, the motor depending on a user setting for skin sensitivity and / or a power consumption of the engine and / or a current hair removal mode and / or from a parameter determined in the past and / or a Advances the hair removal and / or of a minimum and / or maximum value for the amount of movement of the engine or the component of the hair removal device.
  • the hair removal device can be further optimized and adapted to the particular user.
  • the hair removal device according to the invention is designed as a shaver. But there is also the possibility of training as an epilation device.
  • an electric hair removal device incorporating a motor-driven hair removal device is disclosed. Removal device has passed over the skin.
  • the inventive method is characterized in that the motor is driven depending on the speed with which the hair removal device is moved over the skin.
  • a movement amount of a component of the hair removal device can be regulated or controlled to a first predefinable value, which depends on the speed with which the hair removal device is moved over the skin. Furthermore, a movement amount of the motor can be controlled or controlled to a second predetermined value, which depends on the speed with which the hair removal device is moved over the skin.
  • FIG. 2 is an enlarged detail of the razor in a sectional view for illustrating an embodiment of the sensor device
  • Fig. 3 shows a further embodiment of the sensor device in a Fig. 2 corresponding representation
  • Fig. 4 is a block diagram of a possible variant of an inventive control of the motor of the razor.
  • Fig. 1 shows an embodiment of an inventive electric shaver 1 in side view.
  • the razor 1 has a housing 2 durable in the hand and a shaving head 3 attached thereto.
  • a switch 4 for switching on and off of the shaver 1 is arranged.
  • the shaving head 3 has a shearing system 5 with a lower blade 6 and a shearing foil 7.
  • the shearing foil 7 is arranged in a holding frame 8.
  • the shaving head 3 has a sensor device 9 for detecting the speed at which the shaving head 3 while the shave is moving over the skin. Structure and operation of the sensor device 9 will be explained in more detail with reference to FIGS. 2 and 3.
  • a motor 10 that drives the lower blade 6.
  • the motor 10 may be formed as a rotary motor and be coupled via a non-figured eccentric with the lower blade 6. Likewise, it is also possible to form the motor 10 as a linear motor.
  • a rechargeable battery 11 and a microcontroller 12 are shown symbolically.
  • the battery 11 provides the supply voltage for operation of the razor 1, wherein the motor 10 is the largest energy consumer.
  • the microcontroller 12 is required in particular for the evaluation of the signals of the sensor device 9 and activation of the motor 10, which will be described in more detail below.
  • the lower blade 6 is displaced relative to the shear foil 7 in a linear oscillating movement. This movement causes hair, which penetrate through the shear foil 7 to the lower blade 6, detected by the lower blade 6 and severed in cooperation with the shear foil 7.
  • the sensor device 9 has a transmitter wheel 13 with an axis 14 which is rotatably mounted in a sleeve 15.
  • the sender wheel 13 has a plurality of markings 16, which are arranged in the circumferential direction of the sender wheel 13 at regular intervals next to each other.
  • a measuring transducer 17 is mounted next to the encoder wheel 13. The transducer 17 is responsive to the markings 16 and generates at a rotation of the encoder wheel 13 in the clock in which the markers 16 are moved past the transducer 17, a signal.
  • the detection of the markers 16 can be done in different ways, such as optically, by induction, etc.
  • the mechanical structure of the sensor device 9 can be modified in many ways.
  • the encoder wheel 13 can be driven by another, non-figured wheel or by a ball.
  • several differently oriented donor wheels 13 with associated measuring sensors 17 may be provided for detecting different directions of movement of the shaving head 3.
  • a skin surface 18 is further shown, over which the shaving head 3 of the shaver 1 is moved, d. H.
  • Fig. 2 shows a snapshot during the implementation of a shave with the shaver 1. During shaving the shaving head 3 is pressed with light pressure against the skin surface 18 and thereby relative to the skin surface
  • the transmitter wheel 13 also touches the skin surface 18 and converts the translational movement of the shaving head 3 into a rotational movement which is detected by the measuring transducer 17 and a corresponding signal is converted to it.
  • the encoder wheel 13 is set in a rapid rotational movement, so that the transducer 17 generates a signal at a relatively high frequency and provides at its output.
  • a slow translational movement of the shaving head 3 however, a slow rotation of the encoder wheel 13 is generated, so that the output signal from the transducer 17 has a relatively low frequency.
  • the frequency of the signal generated by the transducer 17 thus represents a measure of the speed with which the shaving head 3 of the shaver 1 is moved over the skin surface 18. This speed can also be determined with the embodiment of the sensor device 9 shown in FIG.
  • FIG. 3 shows a further exemplary embodiment of the sensor device 9 in a representation corresponding to FIG. 2.
  • the sensor device 9 has a light source 19 and a light sensor 20.
  • the light source 19 may be, for example, a light emitting diode.
  • a light sensor 20 is particularly suitable a photodiode.
  • the light source 19 is mounted in the shaving head 3 so that it emits light toward the skin surface 18 when the shaving head 3 is moved over the skin surface 18 during a shave.
  • the light is reflected in part on the skin surface 18, again detecting a portion of the reflected light from the light sensor 20.
  • the light sensor 20 generates an electrical signal corresponding to the detected light, which is a measure of the speed with which the shaving head 3 is moved over the skin surface 18.
  • the evaluation of the output from the light sensor 20 signal can be carried out in a similar manner as in an optical computer mouse.
  • FIG. 4 shows a block diagram for a possible variant of a control according to the invention of the motor 10 of the razor 1.
  • the illustration relates to an embodiment of the razor 1, in which the motor 10 is designed as a rotary motor.
  • the illustrated blocks represent the sensor device 9, the microcontroller 12, the motor 10 and a speed sensor 21 which detects the current engine speed.
  • the signal output by the sensor device 9 is supplied to the microcontroller 12. Based on this signal, the microcontroller 12 determines a default value for the speed of the lower blade 6 relative to the shaving foil 7.
  • the default value can be calculated, for example, using an algorithm implemented in the microcontroller 12 or read out from a table stored in the microcontroller 12. In this case, the default value is selected in each case so that for the determined by the sensor device 9 speeds of the shaving head 3 relative to the skin surface 18 favorable cutting conditions for the severing of the hair. During the cutting process, the hairs are each clamped briefly between the lower blade 6 and the shaving foil 7 immediately before cutting.
  • the pinched hairs are slightly pulled out of the skin before they are severed by an interaction of the lower blade and the shaving foil. This effect is desirable and causes the hair to be cut closer to its root in the subsequent second cut, thereby allowing a very thorough shave.
  • the hair must not be pulled too far out of the skin, as this is otherwise painful for the user of the shaver 1.
  • the pain threshold is typically around 0.4 mm, ie if the hair is pulled out of the skin by more than 0.4 mm, this is usually felt as pain.
  • shaving will not be particularly thorough if the hair is pulled out of the skin too little. This means that the hair should be severed relatively quickly after pinching, when the shaving head 3 is passed over the skin surface 18 at high speed. On the other hand, if the shaving head 3 is guided slowly over the skin surface 18, then a greater period of time should elapse between the pinching and severing of the hair.
  • the default value for the speed of the lower blade 6 is chosen to be greater, the faster the shaving head 3 is moved over the skin surface 18.
  • the Mikrocont- roller 12 determines a target value for the speed of the motor 10.
  • the setpoint is chosen so that the speed of the lower blade 6 coincides with the default value when the engine 10 with the setpoint for the speed is rotating.
  • Analogous to the default value for the speed of the lower blade 6 and the target value for the engine speed can be calculated by means of an algorithm or taken from a table. The thus determined setpoint of the engine speed is compared with the actual value detected by the speed sensor 21.
  • the microcontroller 12 Based on this target-actual comparison of the microcontroller 12 controls the motor 10 so that the actual value approaches the target value.
  • the inertia of the motor 10 can be taken into account and the motor 10 can be controlled accordingly to a slightly higher speed than corresponds to the desired value.
  • one or more parameters can be taken into account in addition to the signal of the sensor device 9. For example, it may be provided that the user on the shaver 1 can make an adjustment with respect to its skin sensitivity. This setting is then evaluated as part of the determination of the default value. It is also possible to consider the strength of the user's beard growth. The strength of the beard growth can be estimated from the current consumption of the motor 10.
  • the particular shaving mode can be considered in which the shaver 1 is operated. For example, with a folded long-hair trimmer, a constant default value can be provided.
  • a memory function can be provided, with the aid of which the microcontroller 12 can determine the user behavior and can adapt the default value to it.
  • a comparatively high standard value can be selected if the user usually shaves quickly or if the shaver 1 has not been used for such a long time that a strong expression of the barts is to be expected. Shaving progress during a shave can also be taken into account when determining the default value. Thus, at the beginning of the shave another default value can be selected as towards the end of the shave. In addition, when determining the default value, a minimum value and a maximum value for the speed of the lower blade 6 can be observed, which must not be exceeded or exceeded.
  • the motor speed or the vibration amplitude of the motor 10 can be controlled in a corresponding manner, as described above for the rotational speed of a rotary motor.
  • the razor 1 can also be designed in each case so that directly a movement amount of the lower blade 6, for example, the speed or amplitude of vibration, is detected and regulated.
  • a modification of the razor 1 is possible in each case, in which instead of a control, a pure control is performed without actual value detection.
  • the invention is not limited to an application in razors 1, but can also be used in other electric hair removal devices having a mechanically working hair removal device.
  • these can be, in particular, epilation apparatuses which detect hairs with the aid of rotating tweezers and pluck them out of the human skin.
  • epilation apparatuses which detect hairs with the aid of rotating tweezers and pluck them out of the human skin.
  • the rotational speed of the forceps or the opening and / or closing speed of the forceps can be varied depending on the speed with which the epilation device is moved across the skin.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
EP06776742A 2005-09-24 2006-08-10 Epilateur electrique Active EP1926574B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005045713A DE102005045713A1 (de) 2005-09-24 2005-09-24 Elektrisches Haarentfernungsgerät
PCT/EP2006/007921 WO2007033729A1 (fr) 2005-09-24 2006-08-10 Epilateur electrique

Publications (2)

Publication Number Publication Date
EP1926574A1 true EP1926574A1 (fr) 2008-06-04
EP1926574B1 EP1926574B1 (fr) 2010-01-20

Family

ID=37179169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06776742A Active EP1926574B1 (fr) 2005-09-24 2006-08-10 Epilateur electrique

Country Status (6)

Country Link
US (1) US8667692B2 (fr)
EP (1) EP1926574B1 (fr)
JP (1) JP5020958B2 (fr)
AT (1) ATE455628T1 (fr)
DE (2) DE102005045713A1 (fr)
WO (1) WO2007033729A1 (fr)

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EP3065918B1 (fr) 2013-11-06 2018-12-12 Koninklijke Philips N.V. Système et procédé pour traiter une partie d'un corps

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EP3546150B1 (fr) * 2018-03-27 2021-10-27 Braun GmbH Dispositif de soins personnels
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Publication number Priority date Publication date Assignee Title
EP2386219B1 (fr) * 2010-05-11 2013-04-03 BSH Bosch und Siemens Hausgeräte GmbH Lisseur à cheveux électrique
EP3065918B1 (fr) 2013-11-06 2018-12-12 Koninklijke Philips N.V. Système et procédé pour traiter une partie d'un corps

Also Published As

Publication number Publication date
DE102005045713A1 (de) 2007-03-29
ATE455628T1 (de) 2010-02-15
WO2007033729A1 (fr) 2007-03-29
DE502006005993D1 (de) 2010-03-11
US20080196258A1 (en) 2008-08-21
JP5020958B2 (ja) 2012-09-05
EP1926574B1 (fr) 2010-01-20
US8667692B2 (en) 2014-03-11
JP2009508606A (ja) 2009-03-05

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