EP0011320A2 - Boîter avec un interrupteur à bouton-poussoir pour appareils électriques - Google Patents

Boîter avec un interrupteur à bouton-poussoir pour appareils électriques Download PDF

Info

Publication number
EP0011320A2
EP0011320A2 EP79200572A EP79200572A EP0011320A2 EP 0011320 A2 EP0011320 A2 EP 0011320A2 EP 79200572 A EP79200572 A EP 79200572A EP 79200572 A EP79200572 A EP 79200572A EP 0011320 A2 EP0011320 A2 EP 0011320A2
Authority
EP
European Patent Office
Prior art keywords
switch
actuating part
pressure switch
knobs
following
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
EP79200572A
Other languages
German (de)
English (en)
Other versions
EP0011320A3 (en
EP0011320B1 (fr
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/de
Publication of EP0011320A2 publication Critical patent/EP0011320A2/fr
Publication of EP0011320A3 publication Critical patent/EP0011320A3/de
Application granted granted Critical
Publication of EP0011320B1 publication Critical patent/EP0011320B1/fr
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 pressure switch for electrical devices, in particular hand-held and guided devices such as electric shavers, film cameras, electric toothbrushes or the like, the pressure switch having an actuating part penetrating a circuit board.
  • Such pressure switches are e.g. B. provided for switching these devices on and off and generally known.
  • the invention has for its object to provide a pressure switch of the type mentioned, which occurs despite the relatively large switch pressure surface with the smallest possible opening in the housing.
  • the actuating part has a plurality of nubs which protrude from corresponding holes in the circuit board.
  • the finger presses against a large number of knobs when the pressure switch is actuated.
  • a large area is available for actuating the pressure switch, while the required housing openings as the sum of the areas of the individual knobs are relatively small overall. Due to the large number of knobs, the finger does not rest against a surface, but against the end faces of the individual knobs. As a result, the contact area is relatively small, so that sweating of the finger when the switch is actuated is counteracted.
  • the grid module of the knobs of the pressure switch according to the invention can be designed in accordance with a grid module of a likewise provided with knobs housing of the electrical device, so that the pressure switch adapts optically well to the rest of the housing.
  • the actuating part consists of an elastic material and rests on the inside against the switch plate. This design ensures that when the knobs are depressed, the actuating part bulges inwards, so that there is a switch actuation. Due to the elasticity of the actuation some of them can move back to their old position without additional springs when the knobs are released.
  • the knobs can also be sealingly guided through the holes in the switch plate due to their elasticity, so that the pressure switch is completely tight and there is no risk of dirt or moisture penetrating into the electrical device.
  • the actuating part is sealingly glued to the switch plate, with an area of the actuating part which is to be dented not being glued to the switch plate for the actuation of the switch, there is a 100% seal without the pressure switch becoming stiff.
  • dirt or moisture could penetrate between the knobs and the holes. However, this moisture or dirt would not get further into the interior of the electrical device, since the actuating part is tightly sealed against the switch plate on all sides.
  • Another embodiment of the invention is also advantageous, according to which the switch plate has an inward indentation.
  • the pressure switch area can be easily recognized even if the housing of the electrical device for which the pressure switch is intended 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 movement is available for actuating the pressure switch, without the knobs protruding beyond the outer contour of the device.
  • a functionally particularly simple pressure switch is obtained if, according to a further embodiment of the invention, the actuating part is coated on the inside of the switch with a metal foil which can be moved against two conductor tracks.
  • the pressure switch according to the invention can be actuated with particularly little force if the actuating part 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 pressure switch according to the invention can be manufactured as an independently tradable component. According to another advantageous embodiment of the invention, however, it is also possible to design part of the housing of an electrical device as a switch plate for the pressure switch according to the invention.
  • the actuating part is assigned a switch which has a switch button which can be displaced by the actuating part, then the electrical part and the mechanical part of the pressure switch according to the invention are particularly well separated from one another.
  • knobs In order to achieve a particularly pleasant feeling when the pressure switch according to the invention is depressed, it is expedient to provide the knobs with rounded end faces in accordance with a further embodiment of the invention.
  • the pressure switch shown in Figure 1 has a switch plate 1 made of a rigid material.
  • This switch plate has a plurality of holes 2 through which the knobs 3 of an actuating part 4 protrude.
  • This actuating part 4 consists of an elastic plastic. It is glued to the switch plate 1 in such a way that its outer region A is firmly and tightly connected to the switch plate 1, but its middle region B can be lifted off the switch plate 1 by depressing the knobs 3, as shown in the figure is. In order to promote this lifting or denting, the material thickness of the actuation can be in area B. partly reduced.
  • the actuating part is coated with an electrically conductive metal foil 5 which, when the pressure switch is actuated, bears against conductor tracks 6 and 7 and thereby closes a circuit.
  • the end faces of the knobs 3 can, as shown in the figure, be rounded, so that they are supported particularly comfortably against the finger when the switch is actuated.
  • the actuating part 4 lies against the switch plate 1 due to its elasticity also in the central area A, so that the metal foil can no longer touch the conductor tracks 6, 7 and the circuit is interrupted.
  • the knobs 3 of the actuating part 4 are longer in the central area B than in the remaining area.
  • the maximum possible actuation stroke of the pressure switch is greater than in the first embodiment, and on the other hand the user is able, due to the different lengths of the knobs, to sense which knobs he can move for the purpose of actuating the switch.
  • the switch plate 1 has a dent 8, in which the knobs 3 are particularly long and protrude from the switch plate to the level of the other knobs located outside the dent. This measure in turn achieves a large actuation stroke without the knobs 3 having to protrude beyond the outer contour of the pressure switch.
  • FIG. 4 shows a housing 10 of an electrical device.
  • This housing is provided on the outside with knobs 11 so that it looks good, is easy to grip and counteracts perspiration on the fingers when holding the housing.
  • the housing 10 has an indentation 12 with a housing opening 13. This opening is sealed by the actuating part 4.
  • the actuating part 4 with knobs 3 projects through a switch plate 1.
  • the type of fastening of the switch plate 1 to the actuating part 4 in the indentation 12 is not shown. It can be done in a conventional manner by means of screws. It is of course also conceivable to design part of the housing 10 directly as a switch plate 1, so that no separate component is required for this.

Landscapes

  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Switches With Compound Operations (AREA)
  • Brushes (AREA)
EP79200572A 1978-10-25 1979-10-09 Boîter avec un interrupteur à bouton-poussoir pour appareils électriques Expired EP0011320B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79200572T ATE7827T1 (de) 1978-10-25 1979-10-09 Gehaeuse mit druckschalter fuer elektrische geraete.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782846354 DE2846354A1 (de) 1978-10-25 1978-10-25 Druckschalter fuer elektrische geraete
DE2846354 1978-10-25

Publications (3)

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

Family

ID=6053033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79200572A Expired EP0011320B1 (fr) 1978-10-25 1979-10-09 Boîter avec un interrupteur à bouton-poussoir pour appareils électriques

Country Status (4)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999050868A1 (fr) * 1998-03-27 1999-10-07 Koninklijke Philips Electronics N.V. Appareil comportant un commutateur pouvant etre enclenche au moyen d'un boitier en forme de dome
US6262368B1 (en) 1998-03-27 2001-07-17 U.S. Philips Corporation Data carrier comprising an implanted module based on a metal lead frame with a double-sided chip cover

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2739137C2 (de) * 1977-08-31 1983-07-14 Braun Ag, 6000 Frankfurt Gehäuse für von Hand gehaltene Geräte
DE3406522A1 (de) * 1984-02-11 1985-09-12 Pelikan Ag, 3000 Hannover Gehaeuse fuer von hand gehaltene geraete, insbesondere schreibgeraete
DE3404923A1 (de) * 1984-02-11 1985-08-14 Pelikan Ag, 3000 Hannover Gehaeuse fuer von hand gehaltene geraete, insbesondere schreibgeraete

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH344987A (fr) * 1957-02-16 1960-03-15 Aesup Brosse à dents électrique
DE1199734B (de) * 1963-04-13 1965-09-02 Alfred Paul K G Massage-Zahnbuerste
DE1597046B2 (de) * 1967-04-25 1976-01-02 Agfa-Gevaert Ag, 5090 Leverkusen Kamera mit einer Auslösehandhabe
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
DE2621257A1 (de) * 1975-05-21 1976-12-02 Sinclair Radionics Elektronische digitaluhr
DE2704886B2 (de) * 1977-02-05 1979-04-12 Bizerba-Werke Wilhelm Kraut Kg, 7460 Balingen Tastatur zur Betätigung von Druckschaltern
DE2739137C2 (de) * 1977-08-31 1983-07-14 Braun Ag, 6000 Frankfurt Gehäuse für von Hand gehaltene Geräte

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999050868A1 (fr) * 1998-03-27 1999-10-07 Koninklijke Philips Electronics N.V. Appareil comportant un commutateur pouvant etre enclenche au moyen d'un boitier en forme de dome
US6262368B1 (en) 1998-03-27 2001-07-17 U.S. Philips Corporation Data carrier comprising an implanted module based on a metal lead frame with a double-sided chip cover
US6331686B1 (en) 1998-03-27 2001-12-18 U.S. Philips Corporation Apparatus having a switch which is operable via a dome-shaped elastic cover

Also Published As

Publication number Publication date
DE2846354A1 (de) 1980-05-08
DE2846354C2 (fr) 1987-09-17
HK81688A (en) 1988-10-14
EP0011320A3 (en) 1981-11-18
EP0011320B1 (fr) 1984-06-06
ATE7827T1 (de) 1984-06-15
DE2967040D1 (en) 1984-07-12

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