EP0011320B1 - Housing with a push switch for electrical apparatus - Google Patents

Housing with a push switch for electrical apparatus Download PDF

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Publication number
EP0011320B1
EP0011320B1 EP79200572A EP79200572A EP0011320B1 EP 0011320 B1 EP0011320 B1 EP 0011320B1 EP 79200572 A EP79200572 A EP 79200572A EP 79200572 A EP79200572 A EP 79200572A EP 0011320 B1 EP0011320 B1 EP 0011320B1
Authority
EP
European Patent Office
Prior art keywords
switch
plate
foil
vicinity
perforations
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.)
Expired
Application number
EP79200572A
Other languages
German (de)
French (fr)
Other versions
EP0011320A2 (en
EP0011320A3 (en
Inventor
Roland Ullmann
Klaus Zimmermann
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.)
Braun GmbH
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 AT79200572T priority Critical patent/ATE7827T1/en
Publication of EP0011320A2 publication Critical patent/EP0011320A2/en
Publication of EP0011320A3 publication Critical patent/EP0011320A3/en
Application granted granted Critical
Publication of EP0011320B1 publication Critical patent/EP0011320B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button

Definitions

  • the invention relates to a housing with a pressure switch for electrical devices, in particular for hand-held and guided devices such as electric erasers, electric toothbrushes or the like.
  • switch handle In order to be able to operate switches as simply and conveniently as possible, it is desirable to design the switch handle as large as possible. That is why light switches often have a switch handle that covers the entire surface of the light switch. These light switches are mostly designed as toggle switches, since they do not have the problem of tilting the switch handle. The problem of tilting the switch handle occurs particularly when you want to provide the smallest possible housing opening in electrical devices for constructional reasons and the switch handle is nevertheless designed to be so large that it extends far beyond the housing opening on all sides.
  • EP-B1-0 001 302 already provides a housing design according to the state of the art according to Art. 54 (3) EPC in which a film is provided on the inside of a perforated housing wall in the area of an electrical switch, which is partially glued to the housing wall, wherein the film is provided on one side with protruding nub-like or tongue-like projections which extend through perforations and are displaceable in the area of the switch arranged inside the housing in order to allow the film to bulge out and thus to actuate the switch.
  • the invention has for its object to form the knob or tongue-like projections in the area of the switch handle of different lengths in a housing of this type without this being immediately visible from the outside of the housing.
  • the housing should be designed in the area of the switch handle so that it protrudes as little as possible from the outer surface of the housing so that the switch is not inadvertently actuated when the device is resting on a base.
  • the housing wall has an inward dent.
  • the pressure switch area can be easily recognized even if the housing of the electrical device also has knobs for reasons of optics or good haptics.
  • this embodiment makes it possible to provide relatively long knobs in the area of the pressure switch, so that a large displacement path is available for the actuation of the switch member without the knobs protruding beyond the outer contour of the device.
  • the switch handle presses the fingers against a large number of knobs, a comparatively large outer surface of the housing being available for actuating the pressure switch, while the required perforations as the sum of the surfaces of the individual knobs are relatively small overall. Due to the large number of knobs touched by the finger at the same time, a particularly soft switch actuation is possible, the contact area between the actuating finger and knobs being relatively small, so that sweating of the finger when the switch is actuated is counteracted.
  • the grid module of the knobs of a switch handle can be designed corresponding to the grid module of the rest of the housing, so that the switch handle adapts well to the housing.
  • the switch handle Due to the elasticity of the film or plate of the switch handle, it can move back into its old position without additional springs when the knobs are released. In addition, due to their elasticity, the knobs can be sealingly guided through the perforations of the housing wall, so that the switch handle is completely tight and there is no risk of dirt or moisture penetrating into the electrical device.
  • the switch handle can be actuated with particularly little force if the film or plate has a smaller wall thickness in the region of the dent which occurs when the switch is actuated than in the rest of the region.
  • the invention permits numerous embodiments. One of them is shown schematically in the drawing and is described below.
  • the housing shown has a housing wall 1 made of a rigid material.
  • This housing wall 1 has a multiplicity of perforations 2 through which the knobs 3 of a film or plate 4 protrude.
  • This film or plate 4 consists of an elastic plastic. It is glued to the housing wall 1 in such a way that its outer region is firmly and tightly connected to the housing wall 1, but its central region can be lifted off the housing wall 1 by depressing the knobs 3. In order to promote this lifting or denting, the material thickness of the film or plate 4 can be reduced in the area of the switch 5, 6.
  • the end faces of the knobs 3, as shown in the figure, can be rounded, so that they are supported particularly comfortably against the finger when the switch is actuated.
  • the film or plate 4 also rests against the housing wall 1 in the central area due to its elasticity.
  • the housing wall 1 has a dent 8, in which the knobs 3 are particularly long and protrude from the housing wall 1 up to the level of the other knobs 3 located outside the dent 8. A large actuation stroke is achieved by this measure without the knobs 3 having to protrude beyond the outer contour of the housing in the switch area.
  • a switch 6 with a switching element 5 which can be displaced by depressing the knobs 3 and thus by bulging the film or plate 4, so that a switch can be actuated.

Landscapes

  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Switches With Compound Operations (AREA)
  • Brushes (AREA)

Abstract

1. Casing with a pressure switch for electrical appliances, particularly for hand-held and guided appliances such as electric shavers, toothbrushes, etc. with a casing wall (1) having perforations (2) and on the inside thereof and at least in the vicinity of an electric switch (5, 6) is covered with a foil or plate (4) made from plastic or a rubber-like material and is partly joined, e.g. bonded thereto, said foil or plate (4) being provided on one side with a plurality of stud or tongue-like projections (3) projecting over a surface of the foil or plate (4) and which are so arranged according to number and size that they extend through the perforations (2) of casing wall (1) and project by a small amount over the outer surface and which in the vicinity of the switch are displaceable into the perforations (2) in order, for operating the pressure switch (5, 6), to permit an inward curvature of the foil or plate (4), the casing wall (1) having in the vicinity of switch (5, 6) an inwardly directed indentation (8).

Description

Die Erfindung betrifft ein Gehäuse mit Druckschalter für elektrische Geräte, insbesondere für von Hand gehaltene und geführte Geräte wie Elektroradierer, elektrische Zahnbürsten oder dergleichen.The invention relates to a housing with a pressure switch for electrical devices, in particular for hand-held and guided devices such as electric erasers, electric toothbrushes or the like.

Um Schalter möglichst einfach und bequem betätigen zu können, ist es wünschenswert, die Schalterhandhabe möglichst großflächig auszubilden. Deshalb haben Lichtschalter oftmals eine Schalterhandhabe, welche die gesamte Fläche des Lichtschalters abdeckt. Diese Lichtschalter sind meist als Kippschalter ausgebildet, da bei ihnen das Problem eines Verkantens der Schalterhandhabe nicht auftritt. Das Problem des Verkantens der Schalterhandhabe tritt insbesondere auf, wenn man bei elektrischen Geräten aus konstruktiven Gründen einen möglichst kleinen Gehäusedurchbruch vorsehen will und die Schalterhandhabe dennoch so großflächig gestaltet wird, so daß sie allseitig weit über den Gehäusedurchbruch hinausragt.In order to be able to operate switches as simply and conveniently as possible, it is desirable to design the switch handle as large as possible. That is why light switches often have a switch handle that covers the entire surface of the light switch. These light switches are mostly designed as toggle switches, since they do not have the problem of tilting the switch handle. The problem of tilting the switch handle occurs particularly when you want to provide the smallest possible housing opening in electrical devices for constructional reasons and the switch handle is nevertheless designed to be so large that it extends far beyond the housing opening on all sides.

Durch die EP-B1-0 001 302 bereits eine Gehäuseausbildung zum Stand der Technik nach Art. 54(3) EPÜ bei der auf der Innenseite einer perforierten Gehäusewand im Bereich eines elektrischen Schalters eine Folie vorgesehen ist, die partiell mit der Gehäusewand verklebt ist, wobei die Folie einseitig mit hervorstehenden noppen- oder zungenartigen Vorsprüngen versehert-ist, die sich durch Perforationen hindurcherstrecken und im Bereich des im Gehäuseinneren angeordneten Schalters verschiebbar sind, um ein Auswölben der Folie und damit eine Betätigung des Schalters zu gestatten.EP-B1-0 001 302 already provides a housing design according to the state of the art according to Art. 54 (3) EPC in which a film is provided on the inside of a perforated housing wall in the area of an electrical switch, which is partially glued to the housing wall, wherein the film is provided on one side with protruding nub-like or tongue-like projections which extend through perforations and are displaceable in the area of the switch arranged inside the housing in order to allow the film to bulge out and thus to actuate the switch.

Der Erfindung liegt die Aufgabe zugrunde, bei einem Gehäuse dieser Art die noppen- oder zungenartigen Vorsprünge im Bereich der Schalterhandhabe unterschiedlich lang auszubilden, ohne daß dies von der Gehäuseaußenseite her sofort sichtbar ist. Insbesondere soll das Gehäuse im Bereich der Schalterhandhabe so ausgebildet sein, daß diese möglichst wenig gegenüber der Gehäuseaußenfläche hervorsteht so, daß der Schalter bei auf einer Unterlage aufliegendem Gerät nicht unbeabsichtigt betätigt wird.The invention has for its object to form the knob or tongue-like projections in the area of the switch handle of different lengths in a housing of this type without this being immediately visible from the outside of the housing. In particular, the housing should be designed in the area of the switch handle so that it protrudes as little as possible from the outer surface of the housing so that the switch is not inadvertently actuated when the device is resting on a base.

Diese Aufgabe wird dadurch gelöst, daß die Gehäusewand eine nach innen gerichtete Einbeulung hat. Bei einer derartigen Ausbildung ist der Druckschalterbereich auch dann leicht zu erkennen, wenn aus Gründen der Optik oder der guten Haptik das Gehäuse des elektrischen Gerätes ebenfalls Noppen hat. Weiterhin ermöglicht diese Ausführungsform, verhältnismäßig lange Noppen im Bereich des Druckschalters vorzusehen, damit ein großer Verschiebeweg für die Betätigung des Schalterglieds zur Verfügung steht, ohne daß die Noppen störend über die Außenkontur des Gerätes hinausragen.This object is achieved in that the housing wall has an inward dent. With such a design, the pressure switch area can be easily recognized even if the housing of the electrical device also has knobs for reasons of optics or good haptics. Furthermore, this embodiment makes it possible to provide relatively long knobs in the area of the pressure switch, so that a large displacement path is available for the actuation of the switch member without the knobs protruding beyond the outer contour of the device.

Schließlich drückt bei dieser Ausbildung der Schalterhandhabe der Finger gegen eine Vielzahl von Noppen, wobei für die Betätigung des Druckschalters eine vergleichsweise große Gehäuseaußenfläche zur Verfügung steht, während die erforderlichen Perforationen als Summe der Flächen der einzelnen Noppen insgesamt relativ klein sind. Durch die Vielzahl von vom Finger gleichzeitig berührten Noppen ist eine besonders weiche Schalterbetätigung möglich, wobei die Berührungsfläche zwischen Betätigungsfinger und Noppen relativ klein ist, so daß einer Schweißabsonderung des Fingers bei Schalterbetätigung entgegengewirkt wird.Finally, in this embodiment, the switch handle presses the fingers against a large number of knobs, a comparatively large outer surface of the housing being available for actuating the pressure switch, while the required perforations as the sum of the surfaces of the individual knobs are relatively small overall. Due to the large number of knobs touched by the finger at the same time, a particularly soft switch actuation is possible, the contact area between the actuating finger and knobs being relatively small, so that sweating of the finger when the switch is actuated is counteracted.

Das Rastermodul der Noppen einer Schalterhandhabe kann entsprechend dem Rastermodul des übrigen Teils des Gehäuses ausgebildet sein, so daß die Schalterhandhabe sich optisch gut dem Gehäuse anpaßt.The grid module of the knobs of a switch handle can be designed corresponding to the grid module of the rest of the housing, so that the switch handle adapts well to the housing.

Aufgrund der Elastizität der Folie oder Platte der Schalterhandhabe vermag diese sich ohne zusätzliche Federn beim Loslassen der Noppen wieder in ihre alte Lage zurück zu bewegen. Außerdem können die Noppen aufgrund ihrer Elastizität dichtend durch die Perforationen der Gehäusewand geführt sein, so daß die Schalterhandhabe völlig dicht ist und keine Gefahr des Eindringens von Schmutz oder Feuchtigkeit in das elektrische Gerät besteht.Due to the elasticity of the film or plate of the switch handle, it can move back into its old position without additional springs when the knobs are released. In addition, due to their elasticity, the knobs can be sealingly guided through the perforations of the housing wall, so that the switch handle is completely tight and there is no risk of dirt or moisture penetrating into the electrical device.

Mit besonders geringer Kraft läßt sich die Schalterhandhabe betätigen, wenn die Folie oder Platte im Bereich der bei Schalterbetätigung auftretenden Einbeulung geringere Wandstärke hat als im übrigen Bereich.The switch handle can be actuated with particularly little force if the film or plate has a smaller wall thickness in the region of the dent which occurs when the switch is actuated than in the rest of the region.

Die Erfindung läßt zahlreiche Ausführungsformen zu. Eine davon ist in der Zeichnung schematisch dargestellt und wird nachfolgend beschrieben.The invention permits numerous embodiments. One of them is shown schematically in the drawing and is described below.

Das dargestellte Gehäuse hat eine Gehäusewand 1 aus einem steifen Werkstoff. Diese Gehäusewand 1 hat eine Vielzahl von Perforationen 2, durch die Noppen 3 einer Folie oder Platte 4 ragen. Diese Folie oder Platte 4 besteht aus einem elastischen Kunststoff. Sie ist derart gegen die Gehäusewand 1 geklebt, daß sie mit ihrem äußeren Bereich fest und dicht mit der Gehäusewand 1 verbunden ist, ihr mittlerer Bereich sich durch Niederdrücken der Noppen 3 jedoch von der Gehäusewand 1 abheben kann. Um dieses Abheben oder Einbeulen zu begünstigen, kann im Bereich des Schalters 5, 6 die Materialdicke der Folie oder Platte 4 herabgesetzt sein.The housing shown has a housing wall 1 made of a rigid material. This housing wall 1 has a multiplicity of perforations 2 through which the knobs 3 of a film or plate 4 protrude. This film or plate 4 consists of an elastic plastic. It is glued to the housing wall 1 in such a way that its outer region is firmly and tightly connected to the housing wall 1, but its central region can be lifted off the housing wall 1 by depressing the knobs 3. In order to promote this lifting or denting, the material thickness of the film or plate 4 can be reduced in the area of the switch 5, 6.

Die Stirnflächen der Noppen 3 können, wie das in der Abbildung gezeigt ist, gerundet ausgeführt sein, so daß sie sich beim Schalterbetätigung besonders angenehm gegen den Finger abstützen.The end faces of the knobs 3, as shown in the figure, can be rounded, so that they are supported particularly comfortably against the finger when the switch is actuated.

Wenn der Benutzer die Noppen 3 im mittleren Bereich nicht mehr niederdrückt sondern losläßt, legt sich die Folie oder Platte 4 aufgrund ihrer Elastizität auch im mittleren Bereich gegen die Gehäusewand 1 an.If the user no longer depresses the knobs 3 in the central area but releases them, the film or plate 4 also rests against the housing wall 1 in the central area due to its elasticity.

Bei der dargestellten Ausführungsform hat die Gehäusewand 1 eine Einbeulung 8, in der die Noppen 3 besonders lang sind und aus der Gehäusewand 1 bis in Höhe der übrigen, außerhalb der Einbeulung 8 gelegenen Noppen 3 ragen. Durch diese Maßnahme wird ein großer Betätigungshub erzielt, ohne daß die Noppen 3 im Schalterbereich über die Außenkontur des Gehäuses ragen müssen.In the embodiment shown, the housing wall 1 has a dent 8, in which the knobs 3 are particularly long and protrude from the housing wall 1 up to the level of the other knobs 3 located outside the dent 8. A large actuation stroke is achieved by this measure without the knobs 3 having to protrude beyond the outer contour of the housing in the switch area.

Unterhalb der Folie oder Platte 4 befindet sich ein Schalter 6 mit einem Schaltglied 5, das durch Niederdrücken der Noppen 3 und damit durch das Ausbeulen der Folie oder Platte 4 verschiebbar ist, so daß es zu einer Schalterbetätigung kommen kann.Below the film or plate 4 there is a switch 6 with a switching element 5 which can be displaced by depressing the knobs 3 and thus by bulging the film or plate 4, so that a switch can be actuated.

Claims (3)

1. Casing with a pressure switch for electrical- appliances, particularly for hand-held and guided appliances such as electric shavers, toothbrushes, etc. with a casing wall (1). having perforations (2) and on the inside thereof and at least in the vicinity of an electric switch (5, 6) is covered with a foil or plate (4) made from plastic or a rubber-like material and is partly joined, e. g. bonded thereto, said foil or plate (4) being provided on one side with a plurality of stud or tongue-like projections (3) projecting over a surface of the foil or plate (4) and which are so arranged according to number and size that they extend through the perforations (2) of casing wall (1) and project by a small amount over the outer surface and which in the vicinity of the switch are displaceable into the perforations (2) in order, for operating the pressure switch (5, 6), to permit an inward curvature of the foil or plate (4), the casing wall (1) having in the vicinity of switch (5, 6) an inwardly directed indentation (8).
2. Casing according to claim 1, characterized in that in the vicinity of indentation (8), the foil or plate (4) has a smaller wall thickness than in the remaining area.
3. Casing according to claim 1 or 2, characterized in that it forms the switch plate of an electrical pressure switch (5, 6) and the foil or plate (4) acts on the switching element (5) of switch (6).
EP79200572A 1978-10-25 1979-10-09 Housing with a push switch for electrical apparatus Expired EP0011320B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79200572T ATE7827T1 (en) 1978-10-25 1979-10-09 HOUSING WITH PRESSURE SWITCH FOR ELECTRICAL DEVICES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2846354 1978-10-25
DE19782846354 DE2846354A1 (en) 1978-10-25 1978-10-25 PRESSURE SWITCH FOR ELECTRICAL DEVICES

Publications (3)

Publication Number Publication Date
EP0011320A2 EP0011320A2 (en) 1980-05-28
EP0011320A3 EP0011320A3 (en) 1981-11-18
EP0011320B1 true EP0011320B1 (en) 1984-06-06

Family

ID=6053033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79200572A Expired EP0011320B1 (en) 1978-10-25 1979-10-09 Housing with a push switch for electrical apparatus

Country Status (4)

Country Link
EP (1) EP0011320B1 (en)
AT (1) ATE7827T1 (en)
DE (2) DE2846354A1 (en)
HK (1) HK81688A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2739137C2 (en) * 1977-08-31 1983-07-14 Braun Ag, 6000 Frankfurt Housing for hand-held devices
DE3404923A1 (en) * 1984-02-11 1985-08-14 Pelikan Ag, 3000 Hannover Housing for hand-held instruments, especially writing instruments
DE3406522A1 (en) * 1984-02-11 1985-09-12 Pelikan Ag, 3000 Hannover Housing for hand-held instruments, especially writing instruments
CN1123022C (en) 1998-03-27 2003-10-01 皇家菲利浦电子有限公司 Apparatus having switch which is operable via dome-shaped elastic cover
JP4179423B2 (en) 1998-03-27 2008-11-12 エヌエックスピー ビー ヴィ Data medium with embedded module and two-sided chip cover based on metal lead frame

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH344987A (en) * 1957-02-16 1960-03-15 Aesup Electric toothbrush
DE1199734B (en) * 1963-04-13 1965-09-02 Alfred Paul K G Massage toothbrush
DE1597046B2 (en) * 1967-04-25 1976-01-02 Agfa-Gevaert Ag, 5090 Leverkusen Camera with a trigger handle
US3959610A (en) * 1974-12-13 1976-05-25 Motorola, Inc. Hermetically sealed keyboard type assembly with elastomeric electrical connecting link between switch and component modules
US3932721A (en) * 1975-02-03 1976-01-13 Motorola, Inc. Sealed switch actuator
US4032738A (en) * 1975-05-15 1977-06-28 Neomed Incorporated Electro-surgical instrument
DE7615209U1 (en) * 1975-05-21 1977-03-24 Sinclair Radionics Ltd., Huntingdon, Cambridgeshire (Grossbritannien) Electronic digital clock
DE2704886B2 (en) * 1977-02-05 1979-04-12 Bizerba-Werke Wilhelm Kraut Kg, 7460 Balingen Keyboard for operating pressure switches
DE2739137C2 (en) * 1977-08-31 1983-07-14 Braun Ag, 6000 Frankfurt Housing for hand-held devices

Also Published As

Publication number Publication date
EP0011320A2 (en) 1980-05-28
DE2846354A1 (en) 1980-05-08
DE2967040D1 (en) 1984-07-12
EP0011320A3 (en) 1981-11-18
ATE7827T1 (en) 1984-06-15
HK81688A (en) 1988-10-14
DE2846354C2 (en) 1987-09-17

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