EP0261489A2 - Commutateur électrique - Google Patents

Commutateur électrique Download PDF

Info

Publication number
EP0261489A2
EP0261489A2 EP87113043A EP87113043A EP0261489A2 EP 0261489 A2 EP0261489 A2 EP 0261489A2 EP 87113043 A EP87113043 A EP 87113043A EP 87113043 A EP87113043 A EP 87113043A EP 0261489 A2 EP0261489 A2 EP 0261489A2
Authority
EP
European Patent Office
Prior art keywords
housing
base
switch according
switch
plunger
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
EP87113043A
Other languages
German (de)
English (en)
Other versions
EP0261489A3 (en
EP0261489B1 (fr
Inventor
Günther Marquardt
Albert King
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 EP0261489A2 publication Critical patent/EP0261489A2/fr
Publication of EP0261489A3 publication Critical patent/EP0261489A3/de
Application granted granted Critical
Publication of EP0261489B1 publication Critical patent/EP0261489B1/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H9/041—Casings hermetically closed by a diaphragm through which passes an actuating member

Definitions

  • the invention relates to an electrical switch with a switching mechanism having at least one fixed contact and at least one movable contact interacting therewith, and a switch housing with an actuating member mounted thereon.
  • switches are already known in a wide variety of variants. This applies in particular to their switching mechanism. But all have in common that the switching mechanism is not adequately protected against water or moisture.
  • the object of the invention is therefore to develop a switch of the type mentioned so that it is waterproof.
  • the electrical switch is designed in accordance with the preamble of claim 1 in accordance with the characterizing part of this claim.
  • a switch housing with at most two, in particular only a single mounting opening and the interposition of at least one sealing element between the switch housing and the base carrying the entire switching mechanism, a perfect seal of the switch housing interior against the atmosphere is achieved, which at least prevents water from penetrating prevented. If a further opening of the switch housing is necessary for the passage of an actuating member, this can be sealed in a comparable manner, unless the actuating member itself is also a sealing element (eg membrane).
  • the sealing element is connected between an inner surface of the switch housing and an opposite surface of the base.
  • an electrical switch is created which is of particularly simple construction and can be installed without problems despite the good seal.
  • both the switch housing and the base simply designed components can be and you can use a conventional element of sealing technology as a sealing element.
  • the switching mechanism can be easily mounted outside the housing, which not only simplifies production, but also accelerates it and thus makes it cheaper.
  • a particularly preferred embodiment of the invention is characterized in that the base or the like bears on its inside a sealing element designed as a sealing ring, in particular an O-ring, which can be pressed against an inner surface of the housing pointing counter to the mounting direction.
  • the base carrying the O-ring is thus pushed into the housing until the sealing ring has reached the inner surface of the housing and has been compressed to a sufficient extent there.
  • the relative position between base and housing must be secured by a suitable measure so that the sealing ring does not relax and the sealing effect can be lost.
  • the sealing ring engage in a circumferential outer groove or at least in mutually opposite undercuts or the like of the base. This secures the position of the sealing ring on the base before assembly and at the same time ensures proper seating of the sealing ring on the housing sealing surface.
  • a particularly preferred variant of the invention is characterized by at least one, but preferably two, wedge-shaped ones ge locking elements on two opposite surfaces of the base, which can be snapped into a window-like recess or an opening of the respectively associated resiliently evacuable housing wall.
  • the latching elements can also be resilient instead of the wall.
  • the wedge-shaped elements are arranged so that the wedge tip leads ahead during assembly. Due to the resilient design of the housing wall, each latching element can enter its window-like recess at the end of the insertion movement, i.e. when the sealing ring is sufficiently tensioned, and thereby cause the base to be latched to the housing in at least two places.
  • Essential elements of the switch according to the invention are the base 1 with the switching mechanism 2 and the switch housing 3.
  • the latter is provided with a mounting opening 4 into which the base 1 with the switching mechanism 2 is pushed in the direction of the arrow 5.
  • the base 1 closes the assembly opening 4 to the outside, and a good seal is already achieved.
  • the switch housing 3 has an essentially cup-shaped shape, the inner contour being stepped twice. The base 1 can be brought into contact with the first paragraph, but this is not absolutely necessary.
  • a sealing element 8 bears against the second paragraph, which is held on the base 1 and is pressed by this in the final assembly position against the second paragraph.
  • This sealing element is preferably an O-ring. It ensures that the housing interior 9 accommodating the switching mechanism 2 is watertightly sealed from the outside.
  • the sealing ring 8 is spring-locked into a circumferential groove on the inside of the base 1 or, as in the exemplary embodiment, two mutually opposite, groove-like undercuts 10 and 11. The latter are located on the inner end of the base 1 in the direction of assembly, which is also designed as a centering element 12.
  • a positive connection is provided in addition to the non-positive connection or instead of the non-positive connection between base 1 and housing 3.
  • the mutually opposite housing walls 13 and 14 are provided with at least one, but preferably two window-like recesses 15 at the same height and equidistant from the housing edge.
  • the wall 13 In order to enable this latching, the wall 13 must be able to deflect resiliently in the direction of the arrow 18. The same applies analogously to the opposite wall 14, which must dodge from right to left.
  • the actuator 21 of the switch is designed as a plunger and can be pressed in in the direction of arrow 22.
  • the switch housing still needs a cross-section corresponding to the plunger Tappet guide 23.
  • the latter is sealed off from the switch housing 3 by a sleeve 24. It is resilient to be able to take part in the tappet movement.
  • Both ends of the cuff are thickened by a bead.
  • One cuff end 25 engages with its bead in an annular groove 26 at the outer end of the tappet.
  • the other cuff end 27 projects into a housing groove 28 which is open at the edge in the longitudinal direction of the tappet.
  • the actuating member 21 in the exemplary embodiment is not depressed directly by hand, but with the aid of a one-armed lever 29 which is pivotably mounted on the switch housing.
  • the elastic property of the sleeve 24 can additionally be used in the sense of a return spring.
  • the inner end of the actuating member 21 designed as a plunger protrudes slightly into the interior of the housing.
  • a spring-elastic, tongue-like holding element 32 slides simultaneously over the two wedge-shaped Ends of the slide bars 31 and is thereby lifted over the inner plunger end 31. It is supported in the end position on this tappet end and / or the thicker ends of the two slide rails.
  • the end position can be seen in Fig. 1.
  • the holding element 32 belongs to the switching mechanism 2.
  • the contact arm 33 carries the movable contact (s) 37, which interact with the fixed contacts 38 and 39.
  • the switch is a changeover switch.
  • Each of the two fixed contacts can be replaced by a stop that only takes on a mechanical but no electrical function.
  • the switch is provided with connecting elements 40 and 41 which pass through the base 1, their inner ends carrying the fixed contacts 38 and 39, respectively.
  • the switch housing 3 is dimensioned such that the edge drawn freely beyond the base 1 surrounds these connection elements 40 and 41 and thereby protects them.
  • the switch housing 2 is further provided with a test bore 42.
  • a test bore 42 In the exemplary embodiment, it is somewhat expanded towards the outside and narrowed at its inner end. The tightness of the connection between the base 1 and check the switch housing 3. After this test, the bore 42 is closed with the aid of a ball 43, which is pressed into the central part of the test bore 42. The resilient property of the housing material is sufficient for secure sealing at this point. Otherwise, the test bore 42 is located centrally on a tubular extension 44 of the switch housing 3.

Landscapes

  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
EP87113043A 1986-09-26 1987-09-07 Commutateur électrique Expired - Lifetime EP0261489B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8625691U 1986-09-26
DE8625691U DE8625691U1 (de) 1986-09-26 1986-09-26 Elektrischer Schalter

Publications (3)

Publication Number Publication Date
EP0261489A2 true EP0261489A2 (fr) 1988-03-30
EP0261489A3 EP0261489A3 (en) 1990-01-03
EP0261489B1 EP0261489B1 (fr) 1993-05-19

Family

ID=6798639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87113043A Expired - Lifetime EP0261489B1 (fr) 1986-09-26 1987-09-07 Commutateur électrique

Country Status (2)

Country Link
EP (1) EP0261489B1 (fr)
DE (2) DE8625691U1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260659A3 (fr) * 1986-09-16 1988-07-20 OMRON Corporation Micro-interrupteur
JPS6429727U (fr) * 1987-08-14 1989-02-22
JPS6429728U (fr) * 1987-08-14 1989-02-22
JPS6429726U (fr) * 1987-08-14 1989-02-22
DE8904332U1 (de) * 1989-04-07 1989-06-22 Marquardt GmbH, 7207 Rietheim-Weilheim Elektrischer Schalter
DE3932125C2 (de) * 1989-09-27 1995-02-02 Priesemuth W Schalter
DE9004490U1 (de) * 1990-04-12 1991-05-29 Cherry Mikroschalter Gmbh, 8572 Auerbach Steckschalter
DE9409268U1 (de) * 1994-06-08 1994-09-08 Burgess GmbH, 26127 Oldenburg Mikroschalter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1402906A (fr) * 1964-03-12 1965-06-18 Crouzet Sa Dispositif permettant de rendre hermétique les appareils tels que les contacteurs àaction brusque dont l'enceinte est en matière plastique
DE2356989A1 (de) * 1973-11-15 1975-05-22 Marquardt J & J Schnappschalter
CH656019A5 (de) * 1982-04-19 1986-05-30 Uniswitch Ag Drucktastenschalter oder drucktaster.
DE3323922A1 (de) * 1983-07-02 1985-01-03 Standard Elektrik Lorenz Ag, 7000 Stuttgart Waschdichtes elektromagnetisches relais
IT206270Z2 (it) * 1985-10-09 1987-07-20 Vimercati Off Mec Interruttore stagno a pulsante

Also Published As

Publication number Publication date
EP0261489A3 (en) 1990-01-03
EP0261489B1 (fr) 1993-05-19
DE8625691U1 (de) 1986-12-18
DE3785905D1 (de) 1993-06-24

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