WO2007131579A1 - Pont tournant pour transformer un mouvement de rotation en un mouvement d'oscillation et utilisation dans un appareil électrique - Google Patents

Pont tournant pour transformer un mouvement de rotation en un mouvement d'oscillation et utilisation dans un appareil électrique Download PDF

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Publication number
WO2007131579A1
WO2007131579A1 PCT/EP2007/003151 EP2007003151W WO2007131579A1 WO 2007131579 A1 WO2007131579 A1 WO 2007131579A1 EP 2007003151 W EP2007003151 W EP 2007003151W WO 2007131579 A1 WO2007131579 A1 WO 2007131579A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling
swing
oscillating
oscillating body
swing bridge
Prior art date
Application number
PCT/EP2007/003151
Other languages
German (de)
English (en)
Inventor
Daniel Dietzel
Matthias Wetzel
Norbert Kreutz
Volker Stenger
Jürgen Höser
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
Priority to DE502007006781T priority Critical patent/DE502007006781D1/de
Priority to AT07724092T priority patent/ATE502740T1/de
Priority to JP2009510302A priority patent/JP5148599B2/ja
Priority to EP07724092A priority patent/EP2024147B1/fr
Publication of WO2007131579A1 publication Critical patent/WO2007131579A1/fr

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
    • B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive

Definitions

  • the invention relates to a swing bridge for converting a rotational movement into an oscillatory movement in an electrical device according to the preamble of patent claim 1.
  • swing bridges are known for example from DE 32 24 223 C2 and are used inter alia in electric dry shavers.
  • such swing bridges in small electrical appliances are usually made of plastic, moreover, they are usually made in one piece.
  • various plastics are suitable as materials for swing bridges, wherein the individual plastics have significantly different properties with respect to the life, the water absorption and thus the manufacturing tolerances, the elasticity and the sliding properties.
  • the selection of materials always represented a compromise with respect to the overall desired material properties.
  • the loads to which different areas of the swing bridge are exposed differ significantly from one another.
  • the elasticity and resulting from the possible load changes lifetime of utmost importance, while it arrives in the coupling, ie the contact point between the rotating drive and the swing bridge in particular wear resistance and low manufacturing tolerances.
  • An increase in the manufacturing tolerance in the coupling leads namely directly to increase the noise level, since any game in this area must be taken again at each change of direction of the swing bridge and thus ultimately leads to a constant impact of the drive to the swing bridge.
  • the invention is therefore an object of the invention to provide a generic swing bridge, which is optimized both in terms of achievable life and in terms of noise minimization and greatly improved over the previously known swing bridges.
  • the solution according to the invention makes it possible in a simple way to form the coupling so that it can be produced with minimal manufacturing tolerance and especially has good sliding properties, while the remaining areas of the swing bridge are optimized in terms of elasticity and service life.
  • the two-part design also favors the demolding of the mold, since the complexity of the individual parts is lower.
  • a preferred embodiment of the invention provides that the coupling consists of a different material than the vibrating body.
  • the coupling and / or the oscillating body has fastening means for connecting these two components.
  • Advantageous embodiments of the invention further provide that the coupling of polyoxymethylene (POM) consists, or that the oscillating body and the other parts of the swing bridge to the coupling of polyamide (PA) exist.
  • POM is characterized, for example, by particularly good sliding properties, which are particularly advantageous in the area of coupling, in which relative movements always occur between the crank-shaped or eccentric-like section and the corresponding swing-bridge-side guides.
  • the material POM is characterized by a very low water absorption, whereby particularly low manufacturing tolerances are possible, which in turn, as already stated above, lead to a reduction in noise. In the coupling area no material deformation takes place, so that the property of the elasticity or the life with respect to load changes is not of primary importance.
  • the oscillating body, the at least one oscillating arm and the at least one articulating element are made in one piece and can therefore be produced in a particularly simple manner and without further assembly steps.
  • Such a vibration bridge according to the invention is particularly suitable for use in an electric shaver, wherein the working means is at least one shearing element of a shaving system. Especially in this field of small electronic devices high demands are placed on life and low noise at low production costs.
  • Fig. 2 is a longitudinal section through a swing bridge according to the invention.
  • Fig. 3 the swing bridge according to the invention in a perspective view.
  • the dry shaver shown in Fig. 1 has a housing 1, in which an electric motor 2 is fixed to a drive shaft 3.
  • On the drive shaft 3 is the eccentric 4, which is rotatably connected and fixed in the axial direction with the drive shaft 3.
  • This eccentric section 4 has a relative to the drive shaft 3 eccentrically offset pin 5, which engages in the coupling 6 of the swing bridge 7.
  • the coupling 6 for this purpose has a horizontally extending along the plane of the drawing slot 8, whose width corresponds to the diameter of the pin 5.
  • the oscillating body 9 is provided in its upper region with a bearing pin 10, on which the lower blade 11 of a shearing system is held.
  • the lower blade 11 has, in a manner known per se, a multiplicity of blades 12 arranged in parallel one behind the other, which together with the shearing foil 13 spanning them form the shearing system.
  • a swing bridge 7 of the invention is shown in longitudinal section, this is composed of a vibrating body 9 and the associated with this coupling 6, and from articulation elements 15 which are connected via swing arms 16 with the oscillating body 9, together.
  • the left and right side of the oscillating body 9 arranged articulation elements 15 serve to attach the swing bridge 7 on the housing 1 of the device.
  • the coupling elements 15 are provided with fastening pins 17.
  • the oscillating arms 16 are designed as vertically extending, flexurally elastic strips which are connected on the one hand via the bending joints 18 with the articulation elements 15 and on the other hand via the bending joints 19 with the respective lower portion of the oscillating body 9.
  • This suspension allows Relatiwerschieben along the oscillation direction A, which is indicated by a double arrow, between the oscillating body 9 and the coupling elements 15.
  • the oscillating body 9 has a longitudinal section eetwa C-shaped configuration and is together with the hinge elements 15, the mounting pin 17, the swinging arms 16 and the bending joints 18, 19 executed as a one-piece component.
  • the coupling 6 is designed as a box-shaped component and connected via the four retaining bolts 20 with the oscillating body 9.
  • the integrally formed with the oscillating body 9 retaining bolts 20 are caulked for the purpose of fixing the coupling 6 at its end projecting through this.
  • a hot caulking is suitable for this purpose. This creates a rivet-like connection.
  • the perspective view of the oscillating bridge in Fig. 3 again clearly shows the slot 8, which is provided in the coupling 6 and which is perpendicular to the direction of oscillation A.
  • the distance between the side walls 21 of the slot 8 is exactly adapted to the diameter of the pin 5 of the eccentric 4, so that relative to the oscillation direction A, a play-free mounting of the pin 5 is realized in the slot 8. This counteracts the occurrence of noise.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Transmission Devices (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

La présente invention concerne un pont tournant pour transformer un mouvement de rotation en un mouvement d'oscillation dans un appareil électrique. Dans le boîtier (1) de l'appareil électrique est maintenu un entraînement (2) par rotation avec un arbre de transmission (3) présentant une section de type manivelle ou de type excentrée (4) et au moins un élément d'articulation (15) du pont tournant (7). Le pont tournant (7) présente au moins un bras oscillant (16) au moyen duquel le point d'articulation (15) est relié de manière élastique au corps oscillant (9). Le corps oscillant (9) supporte un moyen de travail (11) à entraîner par oscillations et présente un accouplement (6) pour la section de type manivelle ou de type excentrée (4) de l'arbre de transmission (3). L'accouplement (6) est conçu comme une pièce séparée qui est reliée au corps oscillant (9).
PCT/EP2007/003151 2006-05-15 2007-04-07 Pont tournant pour transformer un mouvement de rotation en un mouvement d'oscillation et utilisation dans un appareil électrique WO2007131579A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE502007006781T DE502007006781D1 (de) 2006-05-15 2007-04-07 Schwingbrücke zum umwandeln einer rotationsbewegung in eine oszillationsbewegung und verwendung einer solchen in einem elektrischen gerät
AT07724092T ATE502740T1 (de) 2006-05-15 2007-04-07 Schwingbrücke zum umwandeln einer rotationsbewegung in eine oszillationsbewegung und verwendung einer solchen in einem elektrischen gerät
JP2009510302A JP5148599B2 (ja) 2006-05-15 2007-04-07 回転運動を振動運動に変換するための振動ブリッジ及び電気装置でのその使用
EP07724092A EP2024147B1 (fr) 2006-05-15 2007-04-07 Pont tournant pour transformer un mouvement de rotation en un mouvement d'oscillation et utilisation dans un appareil électrique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006022909A DE102006022909A1 (de) 2006-05-15 2006-05-15 Schwingbrücke zum Umwandeln einer Rotationsbewegung in eine Oszillationsbewegung und Verwendung einer solchen in einem elektrischen Gerät
DE102006022909.6 2006-05-15

Publications (1)

Publication Number Publication Date
WO2007131579A1 true WO2007131579A1 (fr) 2007-11-22

Family

ID=38171310

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/003151 WO2007131579A1 (fr) 2006-05-15 2007-04-07 Pont tournant pour transformer un mouvement de rotation en un mouvement d'oscillation et utilisation dans un appareil électrique

Country Status (6)

Country Link
EP (1) EP2024147B1 (fr)
JP (1) JP5148599B2 (fr)
CN (2) CN104029226A (fr)
AT (1) ATE502740T1 (fr)
DE (2) DE102006022909A1 (fr)
WO (1) WO2007131579A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220001554A1 (en) * 2020-07-01 2022-01-06 Braun Gmbh Swing bridge and electrically driven device herewith

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104801478B (zh) * 2014-01-24 2017-07-11 赛恩倍吉科技顾问（深圳）有限公司 电子装置及其使用的振动机构
JP6275501B2 (ja) * 2014-02-07 2018-02-07 マクセルホールディングス株式会社 電気かみそり
CN104802194A (zh) * 2015-05-06 2015-07-29 浙江美森电器有限公司 一种可修复剃毛皮肤损伤的剃毛器
EP3300862B1 (fr) 2016-09-28 2019-10-23 Braun GmbH Dispositif électrique
EP3300861B1 (fr) 2016-09-28 2019-07-03 Braun GmbH Dispositif entraîné électriquement
EP3424653A1 (fr) * 2017-07-07 2019-01-09 Koninklijke Philips N.V. Unité de transmission de mouvement, chaîne cinématique et appareil de coupe de cheveux
EP3542975B1 (fr) 2018-03-23 2020-12-30 Braun GmbH Dispositif entraîné électriquement
CN108848932A (zh) * 2018-07-11 2018-11-23 王利平 轴头甩动式采摘机
WO2022000389A1 (fr) 2020-07-01 2022-01-06 Braun Gmbh Dispositif à entraînement électrique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065977A (en) * 1975-07-28 1978-01-03 U.S. Philips Corporation Reciprocating vibrating drive
DE3224223C2 (fr) 1981-06-30 1989-09-07 Matsushita Electric Works, Ltd., Kadoma, Osaka, Jp
DE4341392C1 (de) 1993-12-04 1994-12-22 Braun Ag Exzenter-Schwingbrückeneingriff
DE19539687A1 (de) * 1994-10-31 1996-05-02 Sanyo Electric Co Elektrischer Rasierer mit verringerter Vibration
EP0721824A2 (fr) * 1995-01-11 1996-07-17 Izumi Products Company Rasoir électrique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2838027B2 (ja) * 1993-12-28 1998-12-16 株式会社テック 電気ひげそり器
JPH10156067A (ja) * 1996-11-26 1998-06-16 Sanyo Electric Co Ltd 往復式電気かみそり
JP3916509B2 (ja) * 2002-05-29 2007-05-16 株式会社泉精器製作所 電気かみそり

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065977A (en) * 1975-07-28 1978-01-03 U.S. Philips Corporation Reciprocating vibrating drive
DE3224223C2 (fr) 1981-06-30 1989-09-07 Matsushita Electric Works, Ltd., Kadoma, Osaka, Jp
DE4341392C1 (de) 1993-12-04 1994-12-22 Braun Ag Exzenter-Schwingbrückeneingriff
DE19539687A1 (de) * 1994-10-31 1996-05-02 Sanyo Electric Co Elektrischer Rasierer mit verringerter Vibration
EP0721824A2 (fr) * 1995-01-11 1996-07-17 Izumi Products Company Rasoir électrique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220001554A1 (en) * 2020-07-01 2022-01-06 Braun Gmbh Swing bridge and electrically driven device herewith

Also Published As

Publication number Publication date
ATE502740T1 (de) 2011-04-15
JP5148599B2 (ja) 2013-02-20
JP2009538104A (ja) 2009-10-29
CN104029226A (zh) 2014-09-10
EP2024147A1 (fr) 2009-02-18
DE102006022909A1 (de) 2007-11-22
DE502007006781D1 (de) 2011-05-05
CN101448611A (zh) 2009-06-03
EP2024147B1 (fr) 2011-03-23

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