EP0864402A1 - Process and device for detecting oil shortage of an electrically driven cutting knife of a hair cutting machine - Google Patents

Process and device for detecting oil shortage of an electrically driven cutting knife of a hair cutting machine Download PDF

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Publication number
EP0864402A1
EP0864402A1 EP19970120687 EP97120687A EP0864402A1 EP 0864402 A1 EP0864402 A1 EP 0864402A1 EP 19970120687 EP19970120687 EP 19970120687 EP 97120687 A EP97120687 A EP 97120687A EP 0864402 A1 EP0864402 A1 EP 0864402A1
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EP
European Patent Office
Prior art keywords
detection
hair clipper
cutting knife
oil
electrically driven
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
EP19970120687
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German (de)
French (fr)
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EP0864402B1 (en
Inventor
Detlef Mattinger
Martin Liebeck
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Procter and Gamble Deutschland GmbH
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Wella GmbH
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    • 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
    • B26B19/40—Lubricating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/263—With means to apply transient nonpropellant fluent material to tool or work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/849—With signal, scale, or indicator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/849—With signal, scale, or indicator
    • Y10T83/866—Indicates wear

Definitions

  • the invention relates to a method according to one of the Claims 1 to 6 and a device according to claim 7.
  • the object of the invention is to overcome the disadvantages mentioned above to prevent.
  • the motor of the hair clipper is in a housing behind a cutting head, for example arranged that he with his drive shaft with a rotating cams connected with an eccentric pin is.
  • This pin moves a control or cam slot, around the rotating movements of the pin in an oscillating Movement of a knife lying on top of one another
  • the Knives through the increased coefficient of friction a larger amount of Energy supplied by the motor is converted into thermal energy. This causes the temperature gradient to increase more sharply at the knife in the first minutes after Switch on the hair clipper. Due to that Rubbing the knives together becomes oscillatory Movement of the knife is damped unperiodically, which causes an increase in housing vibrations (structure-borne noise) and Sound level of the hair clipper results.
  • the invention is based on several exemplary embodiments described in more detail.
  • FIG. 1 shows a method for the detection of a Oil shortage of an electrically powered cutting knife Hair clipper (not shown) shown, wherein for detection an increased current consumption of the drive motor M ( Figure 2) is used such that the motor current I ( Figure 2) measured continuously (block 1) and with a predetermined temperature-dependent threshold value (block 2) of a comparator (block 3) is compared.
  • This Threshold 2 should depend on the ambient temperature be, because of this the coefficient of friction of the knife with to be influenced. For example, is the measured Motor current I at least briefly (a few milliseconds) not dropped below threshold 2 (block 3), redeems Signal generator (block 4) a signal (block 5).
  • the signal 5 is not in the normal Cutting operation triggers, but with an oiled knife is continuously switched on.
  • FIG. 3 Another method for detecting an oil shortage electrically driven cutting knife of a hair clipper is shown in Figure 3, wherein for Detection of a lack of oil an increased cutting knife vibration noise is used in such a way that the Cutting knife vibration noise measured continuously (block 10) - for example using a structure-borne noise sensor - and with a predetermined threshold (block 11) of one Comparator (block 3) is compared.
  • the measured cutting knife vibration noise 10 in one Period of 10s for example, not at least briefly (for example 10 ms) has dropped below the threshold 11, triggers a signal generator 4 a signal 5 from.
  • an oil shortage is detected increased sound level of the hair clipper in such a way used that the sound level measured continuously (block 12) - for example using a microphone - and with a predetermined threshold value (block 13) from a comparator (Block 3) is compared.
  • a signal generator 4 triggers a signal 5 out.
  • one is used to detect an oil shortage increased cutting knife temperature used in such a way that the cutting knife temperature for example in the first Measured minute after switching on the machine (block 14) - For example by means of an appropriate temperature sensor - and with a predefined, ambient temperature-dependent Threshold (block 15) from a comparator (Block 3) is compared. For example, is the measured Cutting knife temperature gradient higher than a given one Threshold value 15, a signal generator 4 triggers a signal 5.
  • the Force measured continuously for example using an appropriate pressure sensor (for example Resistance measuring bridge) - and with a given one Threshold (block 17) from a comparator (block 3) is compared.
  • the measured force is in a period of 10s, for example, not at least briefly (e.g. 10ms) below the threshold 17 decreased, a signal generator 4 triggers a signal 5.
  • a lower engine speed used so that the Engine speed measured continuously (block 18) - for example by means of a corresponding light barrier or the like - and with a predetermined threshold (block 19) of a comparator (block 3) is compared.
  • the measured engine speed in one period of, for example, 10s not at least briefly (for Example 10 ms) has risen above the threshold 19, redeems Signal generator 4 a signal 5 off.
  • the display 8 is one display device 21 driving detection device 20 shown, wherein Indicating an oil shortage, signal 5 is used.
  • the display can be acoustic or / and visual.
  • Post-oil device 22 can be activated, whereby a fully automatic re-oiling of the cutting knives takes place.
  • the Refueling device 22 is provided with a - not shown - Provided oil reservoir, the post-oil device 22 with a refill indicator 23 is provided, which indicates that the Refill oil reservoir with oil and such is dimensioned that in professional use the Hair clippers, for example, only once a year Refill oil.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)

Abstract

The method detects an increase in the current supplied to the electric drive motor for operation of the cutter blades, an increase in the vibration noise generated by the cuter blades, an increase in the operating noise level of the electric hair cutter, an increase in the cutter blade temperature, an increase in the force along the drive path for the cutter blades, or a reduction in the drive motor revs. The oil deficiency detection circuit (20) may be used for activating a display (21) and/or for operating an oil delivery device (22), for feeding oil to the cutter blades.

Description

Die Erfindung betrifft ein Verfahren nach einem der Ansprüche 1 bis 6 und eine Einrichtung nach dem Anspruch 7.The invention relates to a method according to one of the Claims 1 to 6 and a device according to claim 7.

Die Schneidmesser von Haarschneidemaschinen müssen regelmäßig nachgeölt werden. Unterbleibt dies, verringert sich zuerst die Schneidleistung, später treten am Messer irreparable Schäden auf. Bisher entscheidet sich der Benutzer (Friseur) der Haarschneidemaschine subjektiv, ob das Messer nachgeölt werden muß. Hinzu kommt ein gewisses Maß an Bequemlichkeit, dieses Nachölen auf einen späteren Zeitpunkt zu verschieben. Dadurch ergeben sich in der Praxis oft zu große Nachölintervalle, die letztlich eine Zerstörung des Messers zur Folge haben können. Eine solche Haarschneidemaschine ist beispielsweise aus der DE 21 17 319 A bekannt.The cutting knives of hair clippers have to be oiled regularly. If this is not done, reduced first the cutting performance, later kick the knife irreparable damage. So far the has decided User (hairdresser) of the hair clipper subjectively whether the knife must be oiled. There is also a certain amount Level of convenience, this oiling on a later Time to postpone. This results in the Practice often too large oil intervals, which ultimately one Destruction of the knife can result. Such Hair clipper is for example from DE 21 17 319 A known.

Aufgabe der Erfindung ist es, die oben genannten Nachteile zu verhindern.The object of the invention is to overcome the disadvantages mentioned above to prevent.

Gelöst wird diese Aufgabe nach einem der Ansprüche 1 bis 7. So gibt es sechs nebengeordnete Verfahrenslösungen und eine Einrichtungslösung.This object is achieved according to one of claims 1 to 7. There are six subordinate procedural solutions and one Furnishing solution.

Bei der Haarschneidemaschine ist der Motor in einem Gehäuse hinter einem Schneidkopf zum Beispiel üblicherweise so angeordnet, daß er mit seiner Antriebswelle mit einem rotierenden Nocken mit einem exzentrischen Stift verbunden ist. Dieser Stift bewegt einen Steuer- bzw. Nockenschlitz, um die Drehbewegungen des Stiftes in eine oszillierende Bewegung des einen aufeinanderliegenden Messers in eine Richtung quer zur Achse des Stiftes umzusetzen. Bei einem sehr geringen Ölfilm zwischen den beiden Messern beginnen diese derart miteinander zu reiben, daß der erforderliche Kraftaufwand, um die Oszillation des bewegten Messern aufrecht zu erhalten, ansteigt. Dadurch steigt der Motorstrom an und die Drehzahl sinkt. Weiterhin wird an den Messern durch den erhöhten Reibwert eine größere Menge der vom Motor zugeführten Energie in Wärmeenergie umgewandelt. Dies bewirkt ein stärkeres Ansteigen des Temperaturgradienten am Messer in den ersten Minuten nach dem Einschalten der Haarschneidemaschine. Bedingt durch das Reiben der Messer aufeinander wird die oszillatorische Bewegung des Messers unperiodisch gedämpft, wodurch sich ein Anstieg der Gehäusevibrationen (Körperschall) und des Schallpegels der Haarschneidemaschine ergibt.The motor of the hair clipper is in a housing behind a cutting head, for example arranged that he with his drive shaft with a rotating cams connected with an eccentric pin is. This pin moves a control or cam slot, around the rotating movements of the pin in an oscillating Movement of a knife lying on top of one another To implement direction transverse to the axis of the pin. At a very little oil film between the two knives to rub them together so that the required Force to oscillate the moving knives maintain increases. This increases the Motor current on and the speed drops. Furthermore, the Knives through the increased coefficient of friction a larger amount of Energy supplied by the motor is converted into thermal energy. This causes the temperature gradient to increase more sharply at the knife in the first minutes after Switch on the hair clipper. Due to that Rubbing the knives together becomes oscillatory Movement of the knife is damped unperiodically, which causes an increase in housing vibrations (structure-borne noise) and Sound level of the hair clipper results.

Die Erfindung wird anhand mehrerer Ausführungsbeispiele näher beschrieben.The invention is based on several exemplary embodiments described in more detail.

Es zeigt:

Figur 1
ein erstes Ausführungsbeispiel als Blockschaltbild;
Figur 2
das erste Ausführungsbeispiel als Schaltbild;
Figur 3 bis 7
ein zweites bis sechstes Ausführungsbeispiel als Blockschaltbild;
Figur 8
eine Haarschneidemaschine mit einer Anzeigeeinrichtung, wahlweise mit einer Nachöleinrichtung und einer Nachfüllanzeige.
It shows:
Figure 1
a first embodiment as a block diagram;
Figure 2
the first embodiment as a circuit diagram;
Figure 3 to 7
a second to sixth embodiment as a block diagram;
Figure 8
a hair clipper with a display device, optionally with a post-oil device and a refill indicator.

In der Figur 1 ist ein Verfahren zur Detektion eines Ölmangels eines elektrisch angetrieben Schneidmessers einer Haarschneidemaschine (nicht dargestellt) dargestellt, wobei zur Detektion eine erhöhte Stromaufnahme des Antriebsmotors M (Figur 2) derart herangezogen wird, daß der Motorstrom I (Figur 2) laufend gemessen (Block 1) und mit einem vorgegebenen temperaturabhängigen Schwellwert (Block 2) von einem Komparator (Block 3) verglichen wird. Dieser Schwellwert 2 sollte von der Umgebungstemperatur abhängig sein, da von dieser die Reibwerte des Messers mit beeinflußt werden. Ist zum Beispiel der gemessene Motorstrom I zumindest kurzzeitig (wenige Millisekunden) nicht unter den Schwellwert 2 gesunken (Block 3), löst ein Signalgeber (Block 4) ein Signal (Block 5) aus. Hierdurch wird sichergestellt, daß das Signal 5 nicht im normalen Schneidbetrieb auslöst, jedoch bei ungeöltem Messer fortwährend eingeschaltet ist.FIG. 1 shows a method for the detection of a Oil shortage of an electrically powered cutting knife Hair clipper (not shown) shown, wherein for detection an increased current consumption of the drive motor M (Figure 2) is used such that the motor current I (Figure 2) measured continuously (block 1) and with a predetermined temperature-dependent threshold value (block 2) of a comparator (block 3) is compared. This Threshold 2 should depend on the ambient temperature be, because of this the coefficient of friction of the knife with to be influenced. For example, is the measured Motor current I at least briefly (a few milliseconds) not dropped below threshold 2 (block 3), redeems Signal generator (block 4) a signal (block 5). Hereby it is ensured that the signal 5 is not in the normal Cutting operation triggers, but with an oiled knife is continuously switched on.

Nach dem Einschalten (Schalter S) der Haarschneidemaschine 6 nach der Figur 2 wird ein Kondensator C über einen Widerstand R 4 langsam aufgeladen. Sinkt der Strom I des Motors M unter den mit Widerständen R1 und R3 eingestellten Schwellwert, schaltet der Komparator 3 (U1A) um und der Kondensator C wird über die Diode D1 entladen. Sinkt der Motorstrom I jedoch nicht innerhalb von zum Beispiel 10 Sekunden zumindest kurzzeitig unter den Schwellwert 2, wird der Kondensator C vollständig aufgeladen, der Signalgeber 4 (U1B) schaltet um und die Leuchtdiode D2 signalisiert Ölmangel Der NTC kompensiert mit R1 und R3 die Temperaturabhängigkeit des Messerreibwerts und des Motorstroms I.After switching on (switch S) the hair clipper 6 according to Figure 2, a capacitor C via a Resistor R 4 slowly charged. If the current I des Motor M among those set with resistors R1 and R3 Threshold, the comparator 3 (U1A) switches and the Capacitor C is discharged via diode D1. Sinks Motor current I, however, not within, for example, 10 Seconds below the threshold 2 at least for a short time capacitor C fully charged, signal generator 4 (U1B) switches over and the LED D2 signals Lack of oil The NTC compensates the temperature dependency with R1 and R3 the coefficient of friction and the motor current I.

Ein weiteres Verfahren zur Detektion eines Ölmangels eines elektrisch angetriebenen Schneidmessers einer Haarschneidemaschine ist in der Figur 3 dargestellt, wobei zur Detektion eines Ölmangels ein erhöhtes Schneidmesservibrationsgeräusch derart herangezogen wird, daß das Schneidmesservibrationsgeräusch laufend gemessen (Block 10) - zum Beispiel mittels eines Körperschallsensors - und mit einem vorgegebenen Schwellwert (Block 11) von einem Komparator (Block 3) verglichen wird. Ist beispielsweise das gemessene Schneidmesservibrationsgeräusch 10 in einer Periode von zum Beispiel 10s nicht zumindest kurzzeitig (zum Beispiel 10ms) unter den Schwellwert 11 gesunken, löst ein Signalgeber 4 ein Signal 5 aus.Another method for detecting an oil shortage electrically driven cutting knife of a hair clipper is shown in Figure 3, wherein for Detection of a lack of oil an increased cutting knife vibration noise is used in such a way that the Cutting knife vibration noise measured continuously (block 10) - for example using a structure-borne noise sensor - and with a predetermined threshold (block 11) of one Comparator (block 3) is compared. For example the measured cutting knife vibration noise 10 in one Period of 10s, for example, not at least briefly (for example 10 ms) has dropped below the threshold 11, triggers a signal generator 4 a signal 5 from.

Nach der Figur 4 wird zur Detektion eines Ölmangels ein erhöhter Schallpegel der Haarschneidemaschine derart herangezogen, daß der Schallpegel laufend gemessen (Block 12) - zum Beispiel mittels eines Mikrofons - und mit einem vorgegebenen Schwellwert (Block 13) von einem Komparator (Block 3) verglichen wird. Ist beispielsweise der gemessene Schallpegel in einer Periode von zum Beispiel 10s nicht zumindest kurzzeitig (zum Beispiel 10ms) unter den Schwellwert 13 gesunken, löst ein Signalgeber 4 ein Signal 5 aus.According to FIG. 4, an oil shortage is detected increased sound level of the hair clipper in such a way used that the sound level measured continuously (block 12) - for example using a microphone - and with a predetermined threshold value (block 13) from a comparator (Block 3) is compared. For example, is the measured No sound level in a period of 10s, for example at least briefly (for example 10ms) under the Threshold value 13 has dropped, a signal generator 4 triggers a signal 5 out.

Nach der Figur 5 wird zu Detektion eines Ölmangels eine erhöhte Schneidmessertemperatur derart herangezogen, daß die Schneidmessertemperatur zum Beispiel in der ersten Minute nach Einschalten der Maschine gemessen (Block 14) - zum Beispiel mittels eines entsprechenden Temperatursensors - und mit einem vorgegebenen, umgebungstemperaturabhängigen Schwellwert (Block 15) von einem Komparator (Block 3) verglichen wird. Ist beispielsweise der gemessene Schneidmessertemperaturgradient höher als ein vorgegebener Schwellwert 15, löst ein Signalgeber 4 ein Signal 5 aus.According to FIG. 5, one is used to detect an oil shortage increased cutting knife temperature used in such a way that the cutting knife temperature for example in the first Measured minute after switching on the machine (block 14) - For example by means of an appropriate temperature sensor - and with a predefined, ambient temperature-dependent Threshold (block 15) from a comparator (Block 3) is compared. For example, is the measured Cutting knife temperature gradient higher than a given one Threshold value 15, a signal generator 4 triggers a signal 5.

Zur Detektion eines Ölmangels wird nach der Figur 6 eine erhöhte Kraft im Kraftweg zwischen Antriebswelle und dem angetriebenen Schneidmesser derart herangezogen, daß die Kraft laufend gemessen (Block 16) - zum Beispiel mittels eines entsprechenden Drucksensors (zum Beispiel Widerstandsmeßbrücke) - und mit einem vorgegebenen Schwellwert (Block 17) von einem Komparator (Block 3) verglichen wird. Ist beispielsweise die gemessene Kraft in einer Periode von zum Beispiel 10s nicht zumindest kurzzeitig (zum Beispiel 10ms) unter den Schwellwert 17 gesunken löst ein Signalgeber 4 ein Signal 5 aus. For the detection of an oil shortage according to FIG increased force in the force path between the drive shaft and the driven cutting knife used so that the Force measured continuously (block 16) - for example using an appropriate pressure sensor (for example Resistance measuring bridge) - and with a given one Threshold (block 17) from a comparator (block 3) is compared. For example, the measured force is in a period of 10s, for example, not at least briefly (e.g. 10ms) below the threshold 17 decreased, a signal generator 4 triggers a signal 5.

Zur Detektion eines Ölmangels wird nach der Figur 7 eine niedrigere Motordrehzahl derart herangezogen, daß die Motordrehzahl laufend gemessen (Block 18) - zum Beispiel mittels einer entsprechenden Lichtschranke oder dergleichen - und mit einem vorgegebenen Schwellwert (Block 19) von einem Komparator (Block 3) verglichen wird. Ist beispielsweise die gemessene Motordrehzahl in einer Periode von zum Beispiel 10s nicht zumindest kurzzeitig (zum Beispiel 10ms) über den Schwellwert 19 gestiegen, löst ein Signalgeber 4 ein Signal 5 aus.According to FIG. 7, a lower engine speed used so that the Engine speed measured continuously (block 18) - for example by means of a corresponding light barrier or the like - and with a predetermined threshold (block 19) of a comparator (block 3) is compared. Is for example the measured engine speed in one period of, for example, 10s not at least briefly (for Example 10 ms) has risen above the threshold 19, redeems Signal generator 4 a signal 5 off.

In der Figur 8 ist die eine Anzeigeeinrichtung 21 ansteuernde Detektionseinrichtung 20 dargestellt, wobei zum Anzeigen eines Ölmangels das Signal 5 herangezogen ist. Die Anzeige kann akustisch oder/und optisch erfolgen. Wahlweise kann anstatt der Anzeigeeinrichtung 21 eine Nachöleinrichtung 22 aktiviert werden, wodurch ein vollautomatisches Nachölen der Schneidmesser erfolgt. Die Nachöleinrichtung 22 ist mit einem - nicht dargestellten - Ölreservoir versehen, wobei die Nachöleinrichtung 22 mit einer Nachfüllanzeige 23 versehen ist, die anzeigt, daß das Ölreservoir mit Öl nachzufüllen ist und derart dimensioniert ist, daß beim professionellen Gebrauch der Haarschneidemaschine zum Beispiel nur noch einmal pro Jahr Öl nachzufüllen ist. 8 is one display device 21 driving detection device 20 shown, wherein Indicating an oil shortage, signal 5 is used. The The display can be acoustic or / and visual. Optional can instead of the display device 21 Post-oil device 22 can be activated, whereby a fully automatic re-oiling of the cutting knives takes place. The Refueling device 22 is provided with a - not shown - Provided oil reservoir, the post-oil device 22 with a refill indicator 23 is provided, which indicates that the Refill oil reservoir with oil and such is dimensioned that in professional use the Hair clippers, for example, only once a year Refill oil.

BezugszeichenlisteReference list

11
MotorstrommessungMotor current measurement
22nd
Temperaturabhängiger SchwellwertTemperature-dependent threshold
33rd
KomparatorComparator
44th
SignalgeberSignal generator
55
Signalsignal
66
HaarschneidemaschineHair clipper
1010th
SchneidmesservibrationsgeräuschmessungCutting knife vibration noise measurement
1111
SchwellwertThreshold
1212th
SchallpegelmessungSound level measurement
1313
SchwellwertThreshold
1414
SchneidmessertemperaturmessungCutting knife temperature measurement
1515
Umgebungstemperaturabhängiger SchwellwertAmbient temperature-dependent threshold
1616
KraftmessungForce measurement
1717th
SchwellwertThreshold
1818th
MotordrehzahlmessungEngine speed measurement
1919th
SchwellwertThreshold
2020th
ÖlmangeldetektionseinrichtungOil shortage detection device
2121
AnzeigeeinrichtungDisplay device
2222
NachöleinrichtungRefueling device
2323
NachfüllanzeigeRefill indicator
SS
Schaltercounter
CC.
Kondensatorcapacitor
II.
MotorstromMotor current
MM
Motorengine
R 1..5R 1..5
Widerstandresistance
D1D1
Diodediode
D2D2
Leuchtdiodeled

Claims (10)

Verfahren zur Detektion eines Ölmangels eines elektrisch angetriebenen Schneidmessers einer Haarschneidemaschine (6), wobei zur Detektion eine erhöhte Stromaufnahme (1) des Antriebsmotors (M) herangezogen wird.Process for the detection of an oil shortage electrically driven cutting knife one Hair clipper (6), one for detection increased current consumption (1) of the drive motor (M) is used. Verfahren zur Detektion eines Ölmangels eines elektrisch angetriebenen Schneidmessers einer Haarschneidemaschine (6), wobei zur Detektion ein erhöhtes Schneidmesservibrationsgeräusch (10) herangezogen wird.Process for the detection of an oil shortage electrically driven cutting knife one Hair clipper (6), one for detection increased cutting knife vibration noise (10) is used. Verfahren zur Detektion eines Ölmangels eines elektrisch angetriebenen Schneidmessers einer Haarschneidemaschine (6), wobei zur Detektion ein erhöhter Schallpegel (12) der Haarschneidemaschine (6) herangezogen wird.Process for the detection of an oil shortage electrically driven cutting knife one Hair clipper (6), one for detection increased sound level (12) of the hair clipper (6) is used. Verfahren zur Detektion eines Ölmangels eines elektrisch angetriebenen Schneidmessers einer Haarschneidemaschine (6), wobei zur Detektion eine erhöhte Schneidmessertemperatur (14) herangezogen wird.Process for the detection of an oil shortage electrically driven cutting knife one Hair clipper (6), one for detection increased cutting knife temperature (14) is used. Verfahren zur Detektion eines Ölmangels eines elektrisch angetriebenen Schneidmessers einer Haarschneidemaschine (6), wobei zur Detektion eine erhöhte Kraft (16) im Kraftweg zwischen Antriebswelle und dem angetriebenen Schneidmesser herangezogen wird.Process for the detection of an oil shortage electrically driven cutting knife one Hair clipper (6), one for detection increased force (16) in the force path between the drive shaft and the driven cutting knife is used. Verfahren zur Detektion eines Ölmangels eines elektrisch angetriebenen Schneidmessers einer Haarschneidemaschine (6), wobei zur Detektion eine niedrigere Motordrehzahl (18) herangezogen wird. Process for the detection of an oil shortage electrically driven cutting knife one Hair clipper (6), one for detection lower engine speed (18) is used. Elektrische Haarschneidemaschine mit Schneidmessern und einem Elektromotorantrieb, dadurch gekennzeichnet, daß die Haarschneidemaschine (6) mit einer Einrichtung (20) zur Detektion eines Ölmangels der Schneidmesser versehen ist.Electric hair clipper with cutting blades and an electric motor drive, characterized in that the hair clipper (6) is provided with a device (20) for detecting a lack of oil in the cutting blades. Haarschneidemaschine nach Anspruch 7, dadurch gekennzeichnet, daß die Detektionseinrichtung (20) eine Anzeigeeinrichtung (21) ansteuert.Hair clipper according to claim 7, characterized in that the detection device (20) controls a display device (21). Haarschneidemaschine nach Anspruch 7, dadurch gekennzeichnet, daß die Detektionseinrichtung (20) eine Nachöleinrichtung (22) aktiviert, die mit den Schneidmessern in Verbindung steht.Hair clipper according to claim 7, characterized in that the detection device (20) activates an oiling device (22) which is connected to the cutting knives. Haarschneidemaschine nach Anspruch 9, dadurch gekennzeichnet, daß die Nachöleinrichtung (22) mit einer Nachfüllanzeige (23) korrespondiert.Hair clipper according to claim 9, characterized in that the post-oil device (22) corresponds to a refill indicator (23).
EP19970120687 1997-03-13 1997-11-26 Process and device for detecting oil shortage of an electrically driven cutting knife of a hair cutting machine Expired - Lifetime EP0864402B1 (en)

Applications Claiming Priority (4)

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DE19710267 1997-03-13
DE19710267 1997-03-13
DE19717055 1997-04-23
DE19717055 1997-04-23

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EP0864402A1 true EP0864402A1 (en) 1998-09-16
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EP (1) EP0864402B1 (en)
JP (1) JPH10258189A (en)
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EP0864402B1 (en) 2002-01-30
US5970831A (en) 1999-10-26
DE59706233D1 (en) 2002-03-14
ES2170323T3 (en) 2002-08-01
US6176166B1 (en) 2001-01-23

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