EP0151504A2 - Système d'entraînement à mouvement de "va-et-vient" pour petit appareil électrique - Google Patents

Système d'entraînement à mouvement de "va-et-vient" pour petit appareil électrique Download PDF

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Publication number
EP0151504A2
EP0151504A2 EP85200141A EP85200141A EP0151504A2 EP 0151504 A2 EP0151504 A2 EP 0151504A2 EP 85200141 A EP85200141 A EP 85200141A EP 85200141 A EP85200141 A EP 85200141A EP 0151504 A2 EP0151504 A2 EP 0151504A2
Authority
EP
European Patent Office
Prior art keywords
cam
rollers
roller
axis
frequency
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
EP85200141A
Other languages
German (de)
English (en)
Other versions
EP0151504B1 (fr
EP0151504A3 (en
Inventor
Gerhard Diefenbach
Hugo Dr. Schemmann
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 AT85200141T priority Critical patent/ATE38954T1/de
Publication of EP0151504A2 publication Critical patent/EP0151504A2/fr
Publication of EP0151504A3 publication Critical patent/EP0151504A3/de
Application granted granted Critical
Publication of EP0151504B1 publication Critical patent/EP0151504B1/fr
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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
    • 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

Definitions

  • the invention relates to a drive device for a vibration device, in particular a small household appliance, such as a dry shaving or massage device, in which the rotor shaft of a rotary drive motor drives a cam scanning roller gear which converts the motor rotational movement into a vibration movement, in which cam scanning rollers at a drive end of one around a central region tiltable swivel arm and a vibrating part to be moved are arranged at the driven end of the swivel arm.
  • a cam mechanism is also known from EP-OS 45 107, in which the cam has the shape of an equilateral triangle with three sides convexly curved in the same way, the oscillating movement being reduced on the circumference of the cam.
  • the removal takes place with the help of a "U-shaped yoke with parallel legs, which enclose the cam on both sides.
  • the profile of the cam has the property that the distance between any two parallel lines that tangent to the profile is constant.
  • the device is as In this way, when the cam rotates within the parallel flanks of the U-shaped yoke, the contact of the cam and yoke is constantly maintained. It has been shown that tolerance problems, clamping and noise cause considerable difficulties with this constant-thickness drive .
  • the rollers alone ensure constant contact between the cam and rollers, since loss of contact of one roller is prevented by the other roller.
  • connection between the swivel arm and the axis of one of the two or both rollers is designed to be elastic, the oscillation planes of the swivel arm and rollers preferably coinciding. This can further reduce running noise.
  • a single-phase synchronous motor 5 is attached to a base plate 3.
  • the single-phase synchronous motor has a U-shaped laminated core 7 with two legs 9 and 9a. Excitation coils 11 and 11a are pushed onto the legs 9 and 9a. Pole shoes 13, 13a form at the free ends of the iron legs 9, 9a, forming a stator bore 15.
  • a permanently magnetic rotor 17 rotates in the stator bore 15, on the shaft 19 of which a cam 21 is arranged. 1 has an elongated, approximately elliptical shape.
  • an axis 23 is attached, on which a pivot arm 25 is pivotally mounted.
  • the swivel arm 25 is divided on the drive side into two partial arms 27, 27a.
  • scanning rollers 31, 31a are mounted by means of axes 29, 29a.
  • the scanning rollers 31 and 31a scan the contour 33 of the cam 21 by constant contact.
  • Carriers 37 of a knife block 39 engage on the output end 35 of the lever arm 25.
  • both drive part arms 27 and 27a or only one of the two can be designed to be elastic. It is also possible to provide the bearings in the region of the axes 29 and 29a with elasticity or to provide the outer surface of one or both rollers 31, 31a with an elastic covering, so as to bring about a certain compensation to avoid jamming.
  • the pivot arm axis 23 or the center line 47 of the driven part of the pivot arm forms the bisector between the connecting lines 43 of the roller axis 29, 29a and the cam axis 19, this center line 47 running through the cam axis 19.
  • the connecting lines 41 between the swivel arm axis 23 and the roller axes 29, 29a and the connecting lines 43 between the cam axis 19 and the roller axes 29, 29a should preferably be perpendicular to one another. Deviations from the linear path lead to distortions. It is possible to take this into account when determining the cam contour and to compensate for it.
  • the correct cam contour 33 which fulfills the above symmetry conditions, is a prerequisite for the drive device to function.
  • the cam contour 33 can be determined as follows:
  • a circle is thus formed around the cam axis 19, the radius of which is equal to the mean distance b from the cam axis 19 and roller axes 29, 29a.
  • the corresponding radii are lengthened or shortened by the amount of deflection belonging to the respective angle.
  • the resulting trajectory is made in circles in close succession, the radius of which is equal to the radius of the roller.
  • the deflection should preferably depend sinusoidally on the angle of rotation ⁇ where a is the amplitude of the roller deflection, which also determines the amplitude of the oscillating movement of the knife, taking into account the lever ratios which depend on the construction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Transmission Devices (AREA)
  • Dry Shavers And Clippers (AREA)
  • Massaging Devices (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP85200141A 1984-02-08 1985-02-07 Système d'entraînement à mouvement de "va-et-vient" pour petit appareil électrique Expired EP0151504B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85200141T ATE38954T1 (de) 1984-02-08 1985-02-07 Antriebsvorrichtung fuer ein vibrationsgeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3404299A DE3404299C2 (de) 1984-02-08 1984-02-08 Antriebsvorrichtung für ein Vibrationsgerät
DE3404299 1984-02-08

Publications (3)

Publication Number Publication Date
EP0151504A2 true EP0151504A2 (fr) 1985-08-14
EP0151504A3 EP0151504A3 (en) 1986-05-28
EP0151504B1 EP0151504B1 (fr) 1988-11-30

Family

ID=6227034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85200141A Expired EP0151504B1 (fr) 1984-02-08 1985-02-07 Système d'entraînement à mouvement de "va-et-vient" pour petit appareil électrique

Country Status (4)

Country Link
EP (1) EP0151504B1 (fr)
JP (1) JPS60241486A (fr)
AT (1) ATE38954T1 (fr)
DE (2) DE3404299C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0212719A2 (fr) * 1985-08-06 1987-03-04 Philips Patentverwaltung GmbH Dispositif d'entraînement pour un appareil vibrateur domestique
GB2290739A (en) * 1994-06-29 1996-01-10 Sanyo Electric Co Electric shaver

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3822332A1 (de) * 1988-07-01 1990-01-04 Philips Patentverwaltung Haushaltsvibrationsgeraet
CN107262352B (zh) * 2017-04-12 2022-03-29 浙江大学宁波理工学院 一种振动装置及非正弦波形的振动组合系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190918483A (en) * 1909-08-11 1910-06-09 Rose Brothers Ltd Improvements in or relating to Cams and Levers or Arms Working in connection therewith.
FR584528A (fr) * 1923-08-02 1925-02-09 Mécanisme pour la transformation d'un mouvement rotatif en un mouvement oscillant ou inversement
US2741132A (en) * 1952-06-30 1956-04-10 Goldberg Michael Double-contact cam mechanisms
EP0045107A1 (fr) * 1980-07-28 1982-02-03 Koninklijke Philips Electronics N.V. Rasoir à sec électrique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1527465B2 (de) * 1964-10-08 1970-08-06 Gebr. Hilgeland, 56OO Wuppertal Doppeldruck-Bolzenpresse
NL6704472A (fr) * 1967-03-29 1968-09-30
NL7404656A (nl) * 1974-04-05 1975-10-07 Philips Nv Inrichting omvattende een synchroonmotor.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190918483A (en) * 1909-08-11 1910-06-09 Rose Brothers Ltd Improvements in or relating to Cams and Levers or Arms Working in connection therewith.
FR584528A (fr) * 1923-08-02 1925-02-09 Mécanisme pour la transformation d'un mouvement rotatif en un mouvement oscillant ou inversement
US2741132A (en) * 1952-06-30 1956-04-10 Goldberg Michael Double-contact cam mechanisms
EP0045107A1 (fr) * 1980-07-28 1982-02-03 Koninklijke Philips Electronics N.V. Rasoir à sec électrique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0212719A2 (fr) * 1985-08-06 1987-03-04 Philips Patentverwaltung GmbH Dispositif d'entraînement pour un appareil vibrateur domestique
EP0212719A3 (fr) * 1985-08-06 1987-11-11 Philips Patentverwaltung GmbH Dispositif d'entraínement pour un appareil vibrateur domestique
US4791327A (en) * 1985-08-06 1988-12-13 U.S. Philips Corp. Drive mechanism for a domestic vibration apparatus
GB2290739A (en) * 1994-06-29 1996-01-10 Sanyo Electric Co Electric shaver
US5685077A (en) * 1994-06-29 1997-11-11 Sanyo Electric Co., Ltd. Electric shaver
GB2290739B (en) * 1994-06-29 1998-01-21 Sanyo Electric Co Electric shaver

Also Published As

Publication number Publication date
JPS60241486A (ja) 1985-11-30
DE3566511D1 (en) 1989-01-05
ATE38954T1 (de) 1988-12-15
EP0151504B1 (fr) 1988-11-30
DE3404299A1 (de) 1985-08-08
EP0151504A3 (en) 1986-05-28
DE3404299C2 (de) 1986-07-17

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