EP0451633B1 - Interrupteur électrique - Google Patents

Interrupteur électrique Download PDF

Info

Publication number
EP0451633B1
EP0451633B1 EP91104942A EP91104942A EP0451633B1 EP 0451633 B1 EP0451633 B1 EP 0451633B1 EP 91104942 A EP91104942 A EP 91104942A EP 91104942 A EP91104942 A EP 91104942A EP 0451633 B1 EP0451633 B1 EP 0451633B1
Authority
EP
European Patent Office
Prior art keywords
housing
switch
positively
lid
actuating ram
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 - Lifetime
Application number
EP91104942A
Other languages
German (de)
English (en)
Other versions
EP0451633A2 (fr
EP0451633A3 (en
Inventor
Alois Schäffeler
Axel Riess
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.)
Marquardt GmbH
Original Assignee
Marquardt 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 Marquardt GmbH filed Critical Marquardt GmbH
Publication of EP0451633A2 publication Critical patent/EP0451633A2/fr
Publication of EP0451633A3 publication Critical patent/EP0451633A3/de
Application granted granted Critical
Publication of EP0451633B1 publication Critical patent/EP0451633B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H13/04—Cases; Covers
    • H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
    • H01H13/063—Casings hermetically closed by a diaphragm through which passes an actuating member

Definitions

  • the invention relates to an electrical switch according to the preamble of claim 1.
  • Switches are often required to be largely liquid-tight, liquid-protected or at least dust-free, so that no external substances can penetrate into the interior of the switch and lead to faults here.
  • the switch housing In order to populate the switch housing, however, it must be accessible at least from one side. Since the switch is provided with fixed and movable components, access is generally made possible from the top or from the bottom of the switch housing.
  • a switch which consists of an injection molded base with an upper housing part placed thereon consists of a thermoplastic material.
  • the upper part of the housing has a thin-walled, circular-shaped area that acts as a movable membrane.
  • a plunger acting on a contact system is located in the interior of the housing in the area of the membrane.
  • a push button switch is also known, which is arranged on a wall opening, the space between the plunger and the switch housing being sealed by means of an annular bellows made of rubber.
  • the bellows is attached on the one hand to the housing of the switch and on the other hand in a groove of the push button and has an approximately V-shaped indentation.
  • the invention is therefore based on the object to provide a largely sealed electrical switch, the easy accessibility of which is also ensured during assembly and which can be sealed inexpensively with simple means.
  • the switch according to the invention is based on the basic idea that there are good preconditions for the tightness of a switch housing when it consists of a housing that is largely closed on all sides. According to the invention it is therefore provided that the switch housing is cup-shaped, i. H. only the top of the switch is open to populate the switch. Through this upper opening, the actuating element, which is movable in vertical guide grooves, is used, which acts with a horizontally displaceable actuating cam on a largely vertically arranged contact bridge for switching the switch. From this switch housing, which is closed at the sides and at the bottom, therefore only the connection lugs protrude from the housing through corresponding slots, which, however, are completely sealed off from the housing.
  • the top side of the switch housing which is initially open for fitting, is now closed by a cover which nestles positively and / or non-positively on the switch housing, the actuator being flexibly connected to this cover.
  • This upper housing closure therefore serves simultaneously as a cover and as a seal, the plunger of the actuating element either protruding through the cover or lying below the flexible cover.
  • the upper cover is in the area of the actuator with a bell-shaped flexible and provided elastic bellows, which has a passage opening for the plunger of the actuator.
  • the actuating tappet can have a circumferential groove in which the upper edge of the bell-shaped bellows engages.
  • the thin-walled bell-shaped bellows can itself be provided with a pressure point in order to generate a defined switch movement.
  • cover has a circumferential web which engages in a corresponding groove in the upper region of the housing.
  • the housing has upward-facing pins which engage in corresponding bores in the attached cover and which are used for caulking and thus for establishing a firm connection.
  • the one-piece cover made of elastic material Thanks to the one-piece cover made of elastic material, a number of different tasks can be solved at the switch.
  • the electrical switch 1 shown in longitudinal section in FIG. 1 and in plan view in FIG. 2 is as Double switch formed with two switching bridges and consists of a switch housing 2 with four closed side walls 3 to 6 and a bottom closed down 7. Inside the switch housing there is an actuator 9 guided in vertical longitudinal grooves 8, which as a cylindrical housing open at the bottom for receiving a counter pressure spring 10 is formed. In the upper area, the actuating member 9 has an actuating plunger 11 which is acted upon by the actuating force 12.
  • the actuating member has two horizontally extending guide housings 13, in each of which an actuating cam 14 is guided horizontally.
  • a compression spring 15 pushes the respective actuating cam 14 against the upper leg 16 of the respective rocker-shaped contact bridge 17, which is mounted in the rocker pivot point 18.
  • the lower leg 19 of the contact bridge 17 carries an electrical contact 20 which interacts with a fixed contact 21.
  • This fixed contact 21 is led out of the interior of the housing through a lower housing opening 22 and is guided as a horizontal web 23 to a connecting terminal 24.
  • the rocker pivot point 18 is designed as a cutting edge for the contact bridge and is connected to the second electrical connection bracket 25, which is led out of the housing in a U-shaped manner via an opening 26.
  • the connection contact 27 serves as a second electrical connection. This arrangement of the switching bridge is present twice, with line 38 representing the plane of symmetry.
  • the two contact bridges are actuated in that the actuating member 9, 11 is pressed down, as a result of which the two actuating cams 14 pass over the radially outstanding rocker pivot point 18 of the respective one Slide the contact bridge 17 from the upper leg 16 to the lower leg 19 in a jerky manner and thus cause the two contact bridges 17 to jump around to connect the respective electrical contact 20 to the fixed contact 21.
  • the switch housing consisting of the side walls 3 to 6 and the lower base 7 is open at the top for the assembly of the components.
  • the switch housing is covered from above with a cover 28, which consists of an elastic material at least in the region of the actuating member 9, 11.
  • the cover 28 closes the entire upper housing opening, a thin-walled, and thus elastic, bell-shaped bellows 29 being provided, through whose upper opening 30 the actuating plunger 11 of the actuating member 9 can pass.
  • the actuating plunger 11 has a horizontally circumferential groove 31, into which the upper edge 32 of the bell-shaped bellows engages.
  • the switch housing has in its upper region a groove 33 which runs horizontally on all sides and into which a web 34 which is also formed on the cover 28 and which also surrounds it engages in a form-fitting and possibly additionally non-positive manner.
  • the circumferential groove 33 is drawn inwards in the middle housing area and forms an additional fixing and support groove 35, into which an associated web area of the cover 28 also engages. This also ensures support and fixation in the middle lid area.
  • the groove 33 can also be formed in this area by a corresponding double-walled embodiment of the housing.
  • the switch housing furthermore has in its upper region upwardly pointing pins 36 which can protrude beyond the upper housing edge and which cooperate with corresponding bores 37 in the housing cover 28 which is put on.
  • the pins 36 are designed such that they can be formed into a rivet connection, for example by caulking, after being joined together with the cover 28.
  • the domed bell-shaped bellows 29 is made of a material that is thinner than the remaining cover wall thickness, so that this area can also spring down when the actuating plunger 11 is actuated.
  • the bellows can itself have a pressure point, so that a defined switching movement can also be achieved in this way.
  • the actuating plunger 11 can also be located directly below the bellows 29 which is closed at the top, so that in this case no passage openings are provided for the actuating plunger 11. This gives a further increased seal against external influences.

Landscapes

  • Push-Button Switches (AREA)

Claims (5)

  1. Commutateur électrique, comportant un boîtier (2) ouvert vers le haut et fermé par un couvercle (28) en une seule pièce, dans lequel est guidé un coulisseau d'actionnement (11) pouvant être actionné en direction verticale, de préférence contre un ressert de pression (9), pour commuter au moins un pont de contact, le couvercle (28) étant réalisé dans la zone du coulisseau d'actionnement (11) à parois minces et de façon élastique, et étant en liaison flexible avec le coulisseau d'actionnement (11),
    caractérisé en ce que le boîtier (2) fermé largement de tous côtés et muni d'un fond (7), est réalisé sous forme d'un creuset de sorte que le boîtier (2) présente une ouverture supérieure, servant d'ouverture de montage et fermée par un couvercle (28) réalisé entièrement en un matériau élastique, le couvercle (28) épousant, de façon clabotée et/ou par adhérence, la forme du boîtier (2), et présentant dans la zone du coulisseau d'actionnement (11) un soufflet (29) cintré vers le haut, réalisé en forme de cloche, recouvrant le coulisseau d'actionnement (11) ou entourant celui-ci d'une manière étanche de façon clabotée et/ou par adhérence au moyen d'une ouverture (30).
  2. Commutateur selon la revendication 1,
    caractérisé en ce que le coulisseau d'actionnement (11) présente une gorge périphérique (31), dans laquelle est encliquetée, de façon clabotée et/ou par adhérence, le bord supérieur (32) du soufflet (29) à parois minces.
  3. Commutateur selon l'une des revendications 1 ou 2,
    caractérisé en ce que le soufflet (29) à parois minces du couvercle (28) peut être déplacé avec un point de poussée.
  4. Commutateur selon l'une des revendications précédentes 1 à 3,
    caractérisé en ce que le bord supérieur du boîtier (2) présente une gorge périphérique horizontale (33), dans laquelle peut être encliquetée de façon clabotée et/ou par adhérence, une tige (34) orientée vers le bas et périphérique du couvercle (28).
  5. Commutateur selon l'une des revendications précédentes 1 à 4,
    caractérisé en ce que le boîtier (2) présente, dans sa zone supérieure, des tourillons (36) faisant saillie de préférence au-delà du bord supérieur du boîtier et agissant dans des perçages correspondants (37) du couvercle (28) pouvant être monté, et en ce que les tourillons (36) peuvent être déformés, en particulier être rabattus, pour la réalisation d'un assemblage rivé.
EP91104942A 1990-04-12 1991-03-28 Interrupteur électrique Expired - Lifetime EP0451633B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4011875 1990-04-12
DE4011875A DE4011875A1 (de) 1990-04-12 1990-04-12 Elektrischer schalter

Publications (3)

Publication Number Publication Date
EP0451633A2 EP0451633A2 (fr) 1991-10-16
EP0451633A3 EP0451633A3 (en) 1992-09-09
EP0451633B1 true EP0451633B1 (fr) 1996-05-15

Family

ID=6404297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91104942A Expired - Lifetime EP0451633B1 (fr) 1990-04-12 1991-03-28 Interrupteur électrique

Country Status (3)

Country Link
US (1) US5164561A (fr)
EP (1) EP0451633B1 (fr)
DE (2) DE4011875A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9306875U1 (de) * 1993-05-06 1993-07-29 Burgess GmbH, 26127 Oldenburg Balg zur Verkleidung eines Stößels eines Schalters
DE4437020A1 (de) * 1994-10-17 1996-04-18 Marquardt Gmbh Elektrischer Schalter
US6121561A (en) * 1999-09-14 2000-09-19 Tri-Tech, Inc. Hermetically sealed electrical switch
DE10217406B4 (de) * 2001-04-19 2014-05-15 Marquardt Gmbh Elektrischer Schalter
ES2190754B1 (es) * 2001-12-21 2005-09-01 Angel Iglesias, S.A Pulsador de doble paso.
US6710277B1 (en) * 2002-12-17 2004-03-23 Defond Manufacturing Limited Electrical switch
DE102007005510B4 (de) 2006-02-10 2019-09-26 Marquardt Gmbh Elektrischer Schalter und Elektrowerkzeug damit
WO2007090382A2 (fr) * 2006-02-10 2007-08-16 Marquardt Gmbh Commutateur électrique
WO2013059474A1 (fr) * 2011-10-18 2013-04-25 Gigavac, Llc Dispositif de déconnexion manuelle hermétique
DE102013210208A1 (de) 2013-05-31 2014-12-04 Tyco Electronics Amp Gmbh Schaltkontaktkammerabdichtung
CN108155036A (zh) * 2017-12-22 2018-06-12 贵州航天电器股份有限公司 一种用于微型气密封开关的传力机构
CN117954240B (zh) * 2024-01-29 2025-06-13 太仓市金时利船用电器有限公司 一种高密封性能的铜质开关

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970015C (de) * 1953-07-31 1958-08-14 Siemens Ag Abdichtung von in einer Wanddurchbrechung angebrachten Betaetigungsdruckknoepfen
US2854536A (en) * 1953-09-08 1958-09-30 Beer Donald Courtney Snap-action electric switches
NL228403A (fr) * 1958-06-04
IT713503A (fr) * 1963-01-04
FR1428122A (fr) * 1965-02-15 1966-02-11 Federico Palazzoli & C Spa Interrupteur ou commutateur à bouton oscillant sous une membrane élastique
US4128744A (en) * 1977-02-22 1978-12-05 Chomerics, Inc. Keyboard with concave and convex domes
FR2511941B1 (fr) * 1981-09-01 1988-02-05 Telemecanique Electrique Clavier modulaire, etanche, a effet tactile
IT206270Z2 (it) * 1985-10-09 1987-07-20 Vimercati Off Mec Interruttore stagno a pulsante
US4652706A (en) * 1986-01-29 1987-03-24 Tower Manufacturing Corporation Double pole switch construction
US4673780A (en) * 1986-02-10 1987-06-16 Eaton Corporation Sealed rectangular pushbutton switch
DE3721123C2 (de) * 1987-06-26 1994-01-13 Motsch Alfons Abgedichteter Drucktaster
US4918270A (en) * 1989-03-06 1990-04-17 Illinois Tool Works, Inc. Appliance switch
JPH02123033U (fr) * 1989-03-22 1990-10-09

Also Published As

Publication number Publication date
US5164561A (en) 1992-11-17
DE59107798D1 (de) 1996-06-20
EP0451633A2 (fr) 1991-10-16
DE4011875A1 (de) 1991-10-17
EP0451633A3 (en) 1992-09-09

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