WO2008019754A2 - Verfahren zur bestimmung der verschmutzung eines elektrisch angetriebenen schneidwerkzeugs und haarschneidegerät - Google Patents
Verfahren zur bestimmung der verschmutzung eines elektrisch angetriebenen schneidwerkzeugs und haarschneidegerät Download PDFInfo
- Publication number
- WO2008019754A2 WO2008019754A2 PCT/EP2007/006622 EP2007006622W WO2008019754A2 WO 2008019754 A2 WO2008019754 A2 WO 2008019754A2 EP 2007006622 W EP2007006622 W EP 2007006622W WO 2008019754 A2 WO2008019754 A2 WO 2008019754A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cutting tool
- characteristic
- dirtiness
- changes
- determining
- Prior art date
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
-
- 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
Definitions
- the present invention relates to a method for determining the contamination of an electrically driven cutting tool and a hair trimmer with a device for determining the contamination of its electrically driven cutting tool.
- this method finds favored application for determining and indicating the degree of soiling of a cutting tool that performs a reciprocating motion and is driven by, for example, an oscillating electric motor or a linear motor.
- Hair trimmers with such a cutting tool are, for example, electric shavers, beard trimmers or the like.
- a method for controlling an oscillating electric motor is known, which is provided, for example, for driving an electric shaver or an electric toothbrush.
- an electric current is supplied to a coil of the electric motor at a certain time to form a magnetic field emanating from a first engine component and acting on a second engine component such that the second engine component is vibrated relative to the first engine component.
- At the time when a current is supplied to the coil at least one electrical characteristic of the coil is determined, which is related to the state of movement of the first or the second engine component, for example, the voltage applied to the coil and / or the current flowing through the coil and / or the temporal change of the current flowing through the coil.
- the inventive method used to determine the contamination of the driven by an oscillating electric motor or linear motor cutting tool at least one characteristic which is determined in a conventional manner by a control device for controlling the oscillating electric motor or linear motor, and which is related to the respective state of movement of the cutting tool.
- the parameter is, cf.
- DE 10229319 A1 determined as a function of continuous measurements of the motor current and / or the motor voltage and / or the time changes of the motor current.
- the control of the oscillating electric motor or linear motor causes the cutting tool driven by the oscillating electric motor or linear motor to always move at the correct frequency and / or amplitude even in the event of load fluctuations, i. with the frequency and / or amplitude to which the cutting tool is tuned with its drive.
- the inventive method is based on the finding that changes in the characteristic are caused by changes in the current load of the cutting tool, these load fluctuations both by changing the operating state (idling, cutting, on or off the drive, etc.) as well as by each Cutting event can
- the cutting tool performs a reciprocating motion and is driven by an oscillating electric motor or linear motor.
- the shaver contains a clog indicator, which is activated as necessary to allow the shaver to be cleaned in due course.
- the following method steps are carried out continuously, wherein in a shaver the oscillation frequency of the engine components is for example 400 Hz, and preferably at least selected. each characteristic is determined in each half oscillation, which is related to the respective state of motion of the cutting tool.
- the first step of the method is to obtain a characteristic related to the respective amplitude of movement of the cutting tool. This can be done, for example, in the manner known from DE 10229319 A1. For this purpose, at least during each half cycle of the cutting tool, for example, the voltage applied to a coil of the electric motor and / or the current flowing through the coil and / or the time change of the current flowing through the coil are detected, and from this a parameter for the amplitude of the movement of the Determined cutting tool.
- the determined parameter is stored, and a subsequently determined parameter is compared with the previously stored parameter.
- a thus determined change in the characteristic may have a positive or negative sign, and is caused during shaving by load fluctuations, which may be due to the individual cutting operations or may be caused by varying degrees of pressing the shaving head to the skin.
- the detection rate of the parameters for controlling the oscillating motor which oscillates at about 400 Hz, takes place at 800 Hz, since in the described exemplary embodiment a parameter is detected at each half-oscillation.
- the evaluation of the parameters for determining the pollution does not have to be done at the same rate. For example, only every second parameter can be used for the evaluation. A stored parameter would thus be compared with the next but one parameter.
- the frequency of the evaluation of the parameter for determining the contamination can thus be lower than the frequency with which the parameter is detected.
- the characteristic change is compared with at least one threshold value.
- a negative characteristic change is compared with a first threshold value and a positive characteristic change with a second threshold value.
- a positive characteristic change arises, for example, in that the contact pressure decreases while the shaving head is guided over the skin during shaving or lifted off the skin.
- the second threshold value is preferably selected such that, on the one hand, at least one lifting of the shaving head from the skin and the associated relief of the drive can be detected and, on the other hand, if necessary, small positive characteristic changes caused by disturbing influences are suppressed.
- Positive characteristic changes, which are greater than the second threshold thus mean that the shear Head had contact with the skin, and therefore, for example, is contaminated by skin fat.
- a negative characteristic change arises, for example, in that at least a certain number of whiskers were cut and thereby the cutting tool was braked. Negative characteristic changes, the amount of which is greater than the first threshold, thus means that whiskers were cut, and therefore the shaving head is polluted by whitewash.
- the pulses generated due to negative characteristic changes are more weighted when counting up the pollution counter than the pulses generated due to positive characteristic changes, since the pollution by whitewash requires cleaning of the shaving head rather than contamination by skin fat.
- the magnitude of the first threshold value may also be selected differently than the magnitude of the second threshold value.
- the count of the contamination counter is compared with a reference value corresponding to a certain contamination of the cutting tool.
- the reaching or exceeding of the reference value is then displayed. This can be done in a conventional manner by a visual, audible or other indication.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dry Shavers And Clippers (AREA)
- Brushes (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/377,575 US9114542B2 (en) | 2006-08-14 | 2007-07-26 | Determining degree of dirtiness of electrically driven cutting tools |
JP2009524092A JP5208941B2 (ja) | 2006-08-14 | 2007-07-26 | 電気的に駆動される切断ツールの汚さを確定する為の方法とヘア切断装置 |
CN2007800304359A CN101505929B (zh) | 2006-08-14 | 2007-07-26 | 用于确定电驱动式剪切工具的污染的方法以及毛发剪切装置 |
EP07801454.5A EP2051837B1 (de) | 2006-08-14 | 2007-07-26 | Verfahren zur bestimmung der verschmutzung eines elektrisch angetriebenen schneidwerkzeugs und haarschneidegerät |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610038126 DE102006038126A1 (de) | 2006-08-14 | 2006-08-14 | Verfahren zur Bestimmung der Verschmutzung eines elektrisch angetriebenen Schneidwerkzeugs und Haarschneidegerät |
DE102006038126.2 | 2006-08-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2008019754A2 true WO2008019754A2 (de) | 2008-02-21 |
WO2008019754A3 WO2008019754A3 (de) | 2008-06-05 |
Family
ID=38954752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/006622 WO2008019754A2 (de) | 2006-08-14 | 2007-07-26 | Verfahren zur bestimmung der verschmutzung eines elektrisch angetriebenen schneidwerkzeugs und haarschneidegerät |
Country Status (7)
Country | Link |
---|---|
US (1) | US9114542B2 (de) |
EP (1) | EP2051837B1 (de) |
JP (1) | JP5208941B2 (de) |
CN (1) | CN101505929B (de) |
DE (1) | DE102006038126A1 (de) |
RU (1) | RU2441745C2 (de) |
WO (1) | WO2008019754A2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013537798A (ja) * | 2010-08-19 | 2013-10-03 | ブラウン ゲーエムベーハー | 電気器具を操作するための方法及び電気器具 |
BR112016029538B1 (pt) * | 2014-06-20 | 2021-01-26 | Koninklijke Philips N.V. | aparelho elétrico de barbear ou depilar |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4583027A (en) * | 1982-12-27 | 1986-04-15 | Hitachi Metals International, Ltd. | Moving magnet linear motor |
JPH04314486A (ja) * | 1991-04-15 | 1992-11-05 | Matsushita Electric Works Ltd | 電気かみそり |
US5274735A (en) * | 1991-12-16 | 1993-12-28 | Sanyo Electric Co., Ltd. | Electric shaver |
US5632087A (en) * | 1994-03-28 | 1997-05-27 | Matsushita Electric Works, Ltd. | Reciprocatory dry shaver |
US6072399A (en) * | 1997-10-04 | 2000-06-06 | Braun Aktiengesellschaft | Method of determining the quantity of the material cut by an electrically powered cutting tool and circuit arrangement for implementing this method |
US20050146296A1 (en) * | 2002-06-28 | 2005-07-07 | Torsten Klemm | Method and apparatus for controlling an oscillating electric motor of a small electric appliance |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04314487A (ja) * | 1991-04-15 | 1992-11-05 | Matsushita Electric Works Ltd | 電気かみそり |
JPH0538387A (ja) * | 1992-01-28 | 1993-02-19 | Matsushita Electric Works Ltd | 電気かみそり |
JPH1147463A (ja) * | 1997-08-04 | 1999-02-23 | Izumi Prod Co | 電気かみそり |
JP4304419B2 (ja) * | 2002-06-12 | 2009-07-29 | パナソニック電工株式会社 | 電気かみそり |
-
2006
- 2006-08-14 DE DE200610038126 patent/DE102006038126A1/de not_active Withdrawn
-
2007
- 2007-07-26 WO PCT/EP2007/006622 patent/WO2008019754A2/de active Application Filing
- 2007-07-26 CN CN2007800304359A patent/CN101505929B/zh not_active Expired - Fee Related
- 2007-07-26 US US12/377,575 patent/US9114542B2/en not_active Expired - Fee Related
- 2007-07-26 EP EP07801454.5A patent/EP2051837B1/de active Active
- 2007-07-26 RU RU2009109190A patent/RU2441745C2/ru not_active IP Right Cessation
- 2007-07-26 JP JP2009524092A patent/JP5208941B2/ja active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4583027A (en) * | 1982-12-27 | 1986-04-15 | Hitachi Metals International, Ltd. | Moving magnet linear motor |
JPH04314486A (ja) * | 1991-04-15 | 1992-11-05 | Matsushita Electric Works Ltd | 電気かみそり |
US5274735A (en) * | 1991-12-16 | 1993-12-28 | Sanyo Electric Co., Ltd. | Electric shaver |
US5632087A (en) * | 1994-03-28 | 1997-05-27 | Matsushita Electric Works, Ltd. | Reciprocatory dry shaver |
US6072399A (en) * | 1997-10-04 | 2000-06-06 | Braun Aktiengesellschaft | Method of determining the quantity of the material cut by an electrically powered cutting tool and circuit arrangement for implementing this method |
US20050146296A1 (en) * | 2002-06-28 | 2005-07-07 | Torsten Klemm | Method and apparatus for controlling an oscillating electric motor of a small electric appliance |
Also Published As
Publication number | Publication date |
---|---|
EP2051837B1 (de) | 2019-05-15 |
DE102006038126A1 (de) | 2008-02-21 |
WO2008019754A3 (de) | 2008-06-05 |
RU2009109190A (ru) | 2010-09-27 |
RU2441745C2 (ru) | 2012-02-10 |
US9114542B2 (en) | 2015-08-25 |
US20110197455A1 (en) | 2011-08-18 |
JP2010500137A (ja) | 2010-01-07 |
EP2051837A2 (de) | 2009-04-29 |
JP5208941B2 (ja) | 2013-06-12 |
CN101505929B (zh) | 2012-08-08 |
CN101505929A (zh) | 2009-08-12 |
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