EP0152143A2 - Reciprocating drive assembly for shearfoil razor with singlephase synchronous motor - Google Patents

Reciprocating drive assembly for shearfoil razor with singlephase synchronous motor Download PDF

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Publication number
EP0152143A2
EP0152143A2 EP85200138A EP85200138A EP0152143A2 EP 0152143 A2 EP0152143 A2 EP 0152143A2 EP 85200138 A EP85200138 A EP 85200138A EP 85200138 A EP85200138 A EP 85200138A EP 0152143 A2 EP0152143 A2 EP 0152143A2
Authority
EP
European Patent Office
Prior art keywords
cam
synchronous motor
drive device
razor
shearfoil
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
EP85200138A
Other languages
German (de)
French (fr)
Other versions
EP0152143A3 (en
EP0152143B1 (en
Inventor
Gerhard Diefenbach
Hugo Dr. Schemmann
Romuald Leander Bukoschek
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.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Patentverwaltung GmbH
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Philips Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Patentverwaltung GmbH
Priority to AT85200138T priority Critical patent/ATE43092T1/en
Publication of EP0152143A2 publication Critical patent/EP0152143A2/en
Publication of EP0152143A3 publication Critical patent/EP0152143A3/en
Application granted granted Critical
Publication of EP0152143B1 publication Critical patent/EP0152143B1/en
Expired legal-status Critical Current

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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
    • B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive
    • B26B19/282—Motors without a rotating central drive shaft, e.g. linear motors
    • 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
    • B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

A drive mechanism for a dry shaver comprising a shear foil and a cutter reciprocatory relative to the shear foil includes a single-phase synchronous motor having a drive shaft. A cam is mounted on the drive shaft, and a transmission roller is constantly in contact with the cam. The surface of at least one of the cam and the transmission roller is provided with a layer approximately 1 mm in thickness of an elastic material.

Description

Antriebsvorrichtung für einen Vibrationstrockenrasierapparat mit einer Scherfolie und einem hin und her bewegbaren Schneidelement und Antrieb durch einen EinphasensynchronmotorDrive device for a vibration dry shaver with a shaving foil and a reciprocating cutting element and drive by a single-phase synchronous motor

Die Erfindung bezieht sich auf eine Antriebsvorrichtung für einen Trockenrasierapparat mit einer Scherfolie und einem gegenüber der Scherfolie mittels eines von einem Einphasensynchronmotor hin und her bewegbaren Schneidelementes, wobei die Bewegungsübertragung von der Welle des Motors auf das Schneidelement mittels Nocken Übertragungsrolle bewirkt wird, die in ständigem Kontakt gehalten werden (EP-OS 45 107, Fig. 4). Der Nocken besteht dabei aus zwei im rechten Winkel zueinander angeordneten Einzelnocken, von denen jeder mittels einer eigenen Übertragungsrolle abgetastet wird. Beide Rollen sind starr miteinander verbunden. Zum Vermeiden eines Klemmens und zur Erzielung eines Toleranzausgleiches sind beide Rollen an ihrem Umfang etwas elastisch ausgebildet.The invention relates to a drive device for a dry shaving apparatus with a shaving foil and a cutting element which can be moved back and forth relative to the shaving foil by means of a cutting element which can be moved back and forth by a single-phase synchronous motor, the movement transmission being effected from the shaft of the motor to the cutting element by means of cams, which are in constant contact are held (EP-OS 45 107, Fig. 4). The cam consists of two individual cams arranged at right angles to each other, each of which is scanned by means of its own transfer roller. Both roles are rigidly connected. In order to avoid jamming and to achieve tolerance compensation, both rollers are designed to be somewhat elastic on their circumference.

Das Antreiben eines Rasiergerätes mit Hilfe eines Einphasensynchronmotors bringt Vorteile mit sich hinsichtlich der Geräteabmessungen. Darüber hinaus arbeitet ein rundlaufender Motor ruhiger als ein Schwingankermotor.Driving a shaving device with the aid of a single-phase synchronous motor has advantages with regard to the device dimensions. In addition, a concentric motor works more smoothly than an oscillating armature motor.

Synchronmotoren haften jedoch ihnen eigene Nachteile an, die sich beim Antrieb eines Elektrorasiergerätes besonders bemerkbar machen. So können beim Betrieb Instabilitäten der Drehgeschwindigkeit auftreten. Diese verschlechtern evtl. die Rasierergebnisse und führen zu starkem Verschleiß und starker Lärmentwicklung. Derartige Instabilitäten sind bekannt aus Philips Research Reports Supplements 1971, Nr. 5, Seiten 64 und 97. Zur Vermeidung derartiger Instabilitäten im Arbeitsbereich werden beispielsweise Vorwiderstände oder Trägheitsmomente auf der Motorwelle eingesetzt. Derartige Maßnahmen benötigen aber im Gerätegehäuse Raum; bei der erstrebten Miniaturisierung erweisen sich derartige Lösungen als ungünstig.However, synchronous motors have their own disadvantages, which are particularly noticeable when driving an electric shaver. Instabilities of the rotational speed can occur during operation. These may worsen the shaving results and lead to excessive wear and noise. Such instabili activities are known from Philips Research Reports Supplements 1971, No. 5, pages 64 and 97. To avoid such instabilities in the work area, series resistors or moments of inertia are used on the motor shaft. However, such measures require space in the device housing; In the miniaturization aimed for, such solutions prove to be unfavorable.

Es ist Aufgabe der Erfndung, das Umlaufen eines ein Schermesser antreibenden Einphasensynchronmotors zu stabilisieren, um so das Rasierergebnis zu verbessern und insbesondere den Verschleiß und die auftret enden Laufgeräusche zu vermindern.It is the task of the invention to stabilize the rotation of a single-phase synchronous motor driving a shearing knife, in order to improve the shaving result and in particular to reduce the wear and the running noise that occurs.

Die gestellte Aufgabe ist erfindungsgemäß dadurch gelöst, daß beim Einsatz einer einzigen Übertragungsrolle, die gegen einen einzigen Nocken gedrückt wird, wenigstens die Oberfläche der Übertragungsrolle und/oder des Nockens aus elastischem Material besteht.The object is achieved in that when using a single transfer roller that is pressed against a single cam, at least the surface of the transfer roller and / or the cam consists of elastic material.

Es hat sich überraschenderweise gezeigt, daß sich der Motorumlauf durch den Einsatz elastischen Materials im Übertragungsweg zwischen Nocken und Rolle so stabilisieren läßt, daß die Laufinstabilitäten verschwinden und der Betrieb ruhig und angenehm wird. Gleichzeitig verbessert sich das Rasierergebnis. Durch den Einsatz elastischen Materials im Übertragungsweg werden die instabilen Gebiete des Motors so verschoben, daß sie nicht mehr stören.It has surprisingly been found that the motor circulation can be stabilized by the use of elastic material in the transmission path between the cam and roller so that the running instabilities disappear and the operation becomes quiet and pleasant. At the same time, the shaving result improves. By using elastic material in the transmission path, the unstable areas of the engine are moved so that they no longer interfere.

Nach einer weiteren Ausgestaltung der Erfindung ist vorgesehen, daß das elastische Material als Schicht auf der Oberfläche von Übertragungsrolle und/oder Nocken angeordnet ist. Diese elastische Schicht kann eine Gummischicht sein, die beispielsweise eine Dicke von 1 mm hat und auf die Oberfläche von Übertragungsrolle und/oder Nocken aufgebracht ist.According to a further embodiment of the invention it is provided that the elastic material is a layer on the surface of the transfer roller and / or cam is arranged. This elastic layer can be a rubber layer, which for example has a thickness of 1 mm and is applied to the surface of the transfer roller and / or cam.

Die Erfindung wird anhand des in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert.The invention is explained in more detail with reference to the embodiment shown in the drawing.

Die Zeichnung zeigt eine Montaqewand 1 eines Trockenrasierapparates, an der ein Synchronmotor 3 befestigt ist. Die Antriebswelle 5 des Synchronmotors steht senkrecht aus ihm hervor und weist nach oben aus der Zeichenebene heraus. Auf der Antriebswelle 5 ist ein Nocken 7 angeordnet, der auf seiner Übertragungsfläche 9 mit einer etwa 1 mm starken Gummischicht 11 bedeckt ist.The drawing shows a mounting wall 1 of a dry shaver to which a synchronous motor 3 is attached. The drive shaft 5 of the synchronous motor protrudes vertically from it and points upwards out of the plane of the drawing. A cam 7 is arranged on the drive shaft 5 and is covered on its transmission surface 9 with an approximately 1 mm thick rubber layer 11.

Mit dem Nocken wirkt eine,Rolle 13 zusammen, die in einem Lagerbügel 15 gehalten ist. Der Lagerbügel 15 kann um eine Achse 17 schwenken. Im Bereich der Rollenachse 19 drückt gegen den Bügel 15 eine Feder 21, deren Vorspannung mit Hilfe einer Stellschraube 23 einstellbar ist.A, roller 13 cooperates with the cam and is held in a bearing bracket 15. The bearing bracket 15 can pivot about an axis 17. In the area of the roller axis 19, a spring 21 presses against the bracket 15, the pretension of which can be adjusted with the aid of an adjusting screw 23.

Der Übertragungshebel 15 ist über einen Mitnehmer 27 mit einem alternierend hin und her beweglichen Untermesser 29 eines Vibrationsrasierers verbunden, das in Lagern 31 geführt ist. Ein nicht näher beschriebenes Gelenk, beispielsweise ein Filmgelenk 33, hebt die starre Verbindung zwischen dem Schneidelemnt 29 und dem Mitnehmer 27 auf.The transmission lever 15 is connected via a driver 27 to an alternating reciprocating bottom knife 29 of a vibration razor, which is guided in bearings 31. A joint that is not described in more detail, for example a film joint 33, cancels the rigid connection between the cutting element 29 and the driver 27.

Auf der Oberfläche 35 der Rolle 13 kann eine Gummischicht 37 angeordnet sein, die etwa 1 mm dick ist. Diese Gummischicht 37 kann an die Stelle der Gummischicht 11 auf dem Nocken 7 treten. Es ist aber auch möglich, beide Gummischichten miteinander zusammenwirken zu lassen. Ebensogut ist es möglich, sowohl den ganzen Nocken als auch die ganze Rolle aus Gummi oder einem elastischen Material zu bilden.A rubber layer 37, which is approximately 1 mm thick, can be arranged on the surface 35 of the roller 13. This rubber layer 37 can take the place of the rubber layer 11 on the cam 7. But it is also possible to let both rubber layers work together. It is equally possible to use the whole cam as well to form whole roll of rubber or an elastic material.

Claims (4)

1. Antriebsvorrichtung für einen Trockenrasierapparat mit einer Scherfolie und einem gegenüber der Scherfolie mittels eines von einem Einphasensynchronmotor hin und her bewegbaren Schneidelementes, wobei die Bewegungsübertragung von der Welle des Motors auf das Schneidelement mittels Nocken und Übertragungsrolle bewirkt wird, die in ständigem Kontakt gehalten werden, dadurch gekennzeichnet, daß beim Einsatz einer einzigen Übertragungsrolle (13), die gegen einen einzigen Nocken (7) gedrückt wird, wenigstens die Oberfläche der Übertragungsrolle und/oder des Nockens aus elastischem Material (9, 35) besteht.1.Drive device for a dry shaving apparatus with a shaving foil and a cutting element which can be moved back and forth relative to the shaving foil by means of a cutting element which can be moved back and forth by a single-phase synchronous motor, the movement transmission being effected from the shaft of the motor to the cutting element by means of cams and transmission rollers which are kept in constant contact, characterized in that when using a single transfer roller (13) which is pressed against a single cam (7), at least the surface of the transfer roller and / or the cam consists of elastic material (9, 35). 2. Antriebsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das elastische Material als Schicht (11, 37) auf der Oberfläche (9) von Nocken (7) oder Oberfläche (35) von Rolle (13) angeordnet ist.2. Drive device according to claim 1, characterized in that the elastic material as a layer (11, 37) on the surface (9) of cams (7) or surface (35) of the roller (13) is arranged. 3. Antriebsvorrichtung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß eine elastische Gummischicht (11, 37) auf die Oberfläche (9, 35) von Übertragungsrolle und/oder Nocken aufgebracht ist.3. Drive device according to claims 1 and 2, characterized in that an elastic rubber layer (11, 37) on the surface (9, 35) of the transfer roller and / or cam is applied. 4. Antriebsvorrichtung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die elastische Schicht ca. 1 mm dick ist.4. Drive device according to claims 1 and 2, characterized in that the elastic layer is approximately 1 mm thick.
EP85200138A 1984-02-08 1985-02-07 Reciprocating drive assembly for shearfoil razor with singlephase synchronous motor Expired EP0152143B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85200138T ATE43092T1 (en) 1984-02-08 1985-02-07 DRIVE DEVICE FOR A VIBRATION DRY SHAVER WITH A SHAVER FOIL AND A RECIPROCATING CUTTING ELEMENT AND DRIVEN BY A SINGLE-PHASE SYNCHRONOUS MOTOR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3404296A DE3404296A1 (en) 1984-02-08 1984-02-08 DRIVING DEVICE FOR A VIBRATION DRY SHAVER WITH A SHEAR FILM AND A MOVING CUTTING ELEMENT AND DRIVE THROUGH A SINGLE-PHASE SYNCHRONOUS MOTOR
DE3404296 1984-02-08

Publications (3)

Publication Number Publication Date
EP0152143A2 true EP0152143A2 (en) 1985-08-21
EP0152143A3 EP0152143A3 (en) 1986-05-28
EP0152143B1 EP0152143B1 (en) 1989-05-17

Family

ID=6227031

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85200138A Expired EP0152143B1 (en) 1984-02-08 1985-02-07 Reciprocating drive assembly for shearfoil razor with singlephase synchronous motor

Country Status (6)

Country Link
US (1) US4606121A (en)
EP (1) EP0152143B1 (en)
JP (1) JPS60185580A (en)
AT (1) ATE43092T1 (en)
CA (1) CA1240137A (en)
DE (2) DE3404296A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322073A1 (en) * 1987-12-23 1989-06-28 Philips Patentverwaltung GmbH Dry shaver with a knife drive transmission

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3610772C1 (en) * 1986-03-29 1987-06-04 Philips Patentverwaltung Small household appliance that is driven by a single-phase synchronous motor
US5007169A (en) * 1989-12-11 1991-04-16 Warner-Lambert Company Vibrating razor
US20070234572A1 (en) * 2006-04-05 2007-10-11 Hannan Jeremiah M Orbiting triple head electric shaver
US20160226364A1 (en) * 2015-01-30 2016-08-04 Sunbeam Products, Inc. Electric Hair Clipper/Trimmer
CN106346517B (en) * 2016-08-25 2018-09-25 上海奔腾电工有限公司 A kind of reciprocating razor of angle driving structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1043867B (en) * 1956-08-31 1958-11-13 Siemens Ag Dry shaver
DE1268465B (en) * 1965-02-02 1968-05-16 Ibm Deutschland Cam drive
US3857296A (en) * 1971-07-23 1974-12-31 Garbo P Vibration-damped rotatable drive member
EP0045107A1 (en) * 1980-07-28 1982-02-03 Koninklijke Philips Electronics N.V. Electric dry shaver

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2203021A (en) * 1937-09-07 1940-06-04 Ralph E Jones Mechanical shaving or hair clipping device
US2287686A (en) * 1940-01-29 1942-06-23 Ralph E Jones Shaving or hair clipping apparatus
NL94301C (en) * 1956-02-29
US3714711A (en) * 1970-12-30 1973-02-06 Sperry Rand Corp Cutter drive member means for electric dry shaver
US3858314A (en) * 1973-06-20 1975-01-07 Schick Inc Drive assembly for an electric shaver
JPS6041953B2 (en) * 1979-03-16 1985-09-19 松下電工株式会社 Electric reciprocating drive device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1043867B (en) * 1956-08-31 1958-11-13 Siemens Ag Dry shaver
DE1268465B (en) * 1965-02-02 1968-05-16 Ibm Deutschland Cam drive
US3857296A (en) * 1971-07-23 1974-12-31 Garbo P Vibration-damped rotatable drive member
EP0045107A1 (en) * 1980-07-28 1982-02-03 Koninklijke Philips Electronics N.V. Electric dry shaver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322073A1 (en) * 1987-12-23 1989-06-28 Philips Patentverwaltung GmbH Dry shaver with a knife drive transmission

Also Published As

Publication number Publication date
DE3404296A1 (en) 1985-08-14
ATE43092T1 (en) 1989-06-15
EP0152143A3 (en) 1986-05-28
JPS60185580A (en) 1985-09-21
US4606121A (en) 1986-08-19
EP0152143B1 (en) 1989-05-17
DE3570203D1 (en) 1989-06-22
CA1240137A (en) 1988-08-09

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