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EP0935269B1 - Swithcasing for electrical switch - Google Patents

Swithcasing for electrical switch Download PDF

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Publication number
EP0935269B1
EP0935269B1 EP98810093A EP98810093A EP0935269B1 EP 0935269 B1 EP0935269 B1 EP 0935269B1 EP 98810093 A EP98810093 A EP 98810093A EP 98810093 A EP98810093 A EP 98810093A EP 0935269 B1 EP0935269 B1 EP 0935269B1
Authority
EP
European Patent Office
Prior art keywords
switch
switch housing
elements
circuit board
locking pin
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
EP98810093A
Other languages
German (de)
French (fr)
Other versions
EP0935269A1 (en
Inventor
Fritz Benger
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.)
Elektro-Apparatebau Olten AG
Original Assignee
Elektro-Apparatebau Olten AG
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 Elektro-Apparatebau Olten AG filed Critical Elektro-Apparatebau Olten AG
Priority to EP98810093A priority Critical patent/EP0935269B1/en
Priority to DE59811896T priority patent/DE59811896D1/en
Priority to US09/246,457 priority patent/US6066816A/en
Publication of EP0935269A1 publication Critical patent/EP0935269A1/en
Application granted granted Critical
Publication of EP0935269B1 publication Critical patent/EP0935269B1/en
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
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5805—Connections to printed circuits
    • 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

Definitions

  • the invention relates to a switch housing for an electrical Switch according to the preamble of claim 1.
  • a switch housing of the type mentioned is from DE 39 01 533 A1 known.
  • Such a switch is in one Control panel or control room from the front of the control panel served here. To do this, it projects over the front panel and is connected on the back to a circuit board that is manufactured by the front panel must be precisely spaced. For that the front switch housing over a shaft, in the of a screw can be screwed in beyond the circuit board can, with which the switch directly with the circuit board is attachable.
  • EP-A-0 402 609 Another such switch housing for a panel or Control room is known from the applicant's EP-A-0 402 609. There are generally a number of such switches evenly over the front panel. EP-A-0 402 609 the switch housing is provided with a flange so that this can be attached directly to a circuit board.
  • the invention is based on this prior art the task of a switch housing of the aforementioned Specify which, in a simple manner, the electrical and mechanical connection of a switch to it assigned circuit board allows.
  • the switch housing consists of two modular structures There are elements that can be pre-assembled and easily combined is achieved that the switch housing comprehensive switch very easy to install and also in simple Are interchangeable and therefore easy to maintain. It is a durable and yet detachable assembly one with the one pre-assembled elements of the switch housing provided circuit board with one pre-assembled with the others Elements of the switch housing provided front panel possible without the additional spacing elements must be provided.
  • FIG. 1 shows a schematic representation of a partially sectioned view of a switch housing according to an embodiment of the invention.
  • the switch housing consists of two elements that match the Reference numerals 1 and 2 are provided.
  • the switching element 1 has over a protruding circumferential edge 3, which over the Front of a control surface or front panel 30 one Control panel, as can be seen in Fig. 2, survives.
  • the body 4 of the switching element 1 is accordingly behind the Front panel of the control panel.
  • the switch shown it is a square in its control surface designed switch with internal lighting.
  • the front shape of the switch can also be round or be chosen rectangular.
  • the switching element 1 for example, an on-off switch, a two-way switch or a key switch.
  • the function of the switching element 1 is from the selected operating front independently.
  • the switching element 1 has two resilient elements 5 and 15 in the arrow directions of the double arrow 6 are movable in an elastic manner.
  • the spring elements 5 and 15 run parallel to the longitudinal axis 35 of the switch housing. They advantageously have at their lower end a ramp 7, which is bent in an inward and protruding hook element 8 ends.
  • the reference number 9 denotes an electrical contact, that in interaction with that through the sectional view 1, not shown, opposite second electrical contact for switching on in the switching element 1 provided lighting element is provided. Naturally the electrical contacts 9 can be omitted if no corresponding lighting function is provided in the switching element 1 is.
  • the one opposite and complementary to the switching element 1 Base element 2 is fastened on the printed circuit board 10. This can be done through a number of procedures especially by soldering the electrical connections between the wiring provided on the printed circuit board 10 and the associated contact pins of the base element Second
  • the base element 2 is in a sectional view shown, in particular the mounting element 11 completely is shown cut and cut in half.
  • reference number 12 denotes a switching unit, which has side latching lugs 13 in the side wings 14 of the mounting element 11 engage.
  • the switching unit 12 has in particular a plunger 25, which with a complementary element provided in the switching element 1 the actual switching process in the complementary Switch unit 12 triggers.
  • a second switching unit 12 is provided his.
  • the arrangement of the switching units 12 and with them the associated plunger 25 depends on the selected switching function the switch, consisting of elements 1 and 2, from.
  • Switching unit 12 may be provided, de being in the mounting element 11 provided space filled by a dummy element becomes.
  • the mounting element 11 between the two switching elements 12 via a cavity 16 has the mouth 33 by two side guides 17 for the resilient elements 5 and 15 limited.
  • the mounting element 11 From the bottom side, the mounting element 11 has a an annular opening exposing guide 18 that is accurate over a corresponding predrilled hole 19 in the circuit board 10 is arranged. Through this hole 19 is a locking pin 20 aligned with the longitudinal axis 35 in the Mounting element 11 advanced.
  • the mounting element 11 forms with its back 36 a stop surface that at least on correspondingly provided areas or points on the circuit board 10 rests.
  • the locking pin 20 is preferably as in FIG. 1 shown, constructed symmetrically. He has one Locking head 21, followed by a shaft 22 which is followed by a locking cam 23. As mentioned then repeat after a short middle shaft Elements on the other side of the locking pin, see above that no care must be taken during assembly in what orientation the locking pin 20 through the hole 19 is advanced into the circuit board 10.
  • the reference numbers for the symmetrical design mentioned here Elements are shown with dashed lines.
  • Another one The design of the locking pins 20 can also be done be designed asymmetrically and in particular one specifically have easy-grip handle button.
  • the switching element 1 is already firmly connected to the front panel. Then will the printed circuit board 10 with the base element preassembled on this 2 advanced against the switching element 1. Add in the process the resilient ends 5 and 15 through the mouth 33 in the Cavity 16 and the electrical contacts 9, if provided, corresponding receptacles 24 slide in them the electrical contact is made. Subsequently the locking pin 20 into the assembled base member 2 and switching element 1 introduced so that the resilient Ends 5 and 15 lock with the locking head 21. A secure and firm connection will thus be in between the front panel of the control panel and the one assigned to it Printed circuit board 10 reached without using spacers Need to become.
  • FIG. 2 shows a schematic view of an arrangement of eight switching elements in a given grid below Use of the switch housing according to the invention. Same features are identified by the same reference symbols in all the figures.
  • FIG. 2 it can be seen in FIG. 2 that the front Switching elements 1 used in a front panel 30 are.
  • the arrangement of the switches creates a grid specified which is to be observed by the electronics.
  • This has a printed circuit board 10, of which here, of course only the section of interest with the corresponding eight basic elements 2 is shown. It is immediately recognizable that resorted to a standardized circuit board can be the eight contact surfaces in the case shown 31 per switch.
  • there are two Bores 34 are provided through which the contacts 32 for the Illuminating function of each switching element 1 through the circuit board 10 can protrude. They are also centered accordingly and concentric to the longitudinal axis 35 per switch the holes 19th introduced to carry out the pins 20 in the circuit board.
  • the two individually pre-assembled modules are now inserted the spring elements 5 and 15 in the corresponding cavities 16 of the assembly elements 11 assembled.
  • This Interface is simple and independent of tolerance.
  • the mechanical Connection is preferably symmetrical through the equipped pull and push pin 20, which allows a predetermined number of switch housings is inserted. In the illustrated embodiment of a switch arrangement of two times four elements, it is sufficient how shown, one at diagonally opposite corners to provide individual locking pin 20. With larger ones Switch arrangements and larger circuit boards are locking pins in 20 in particular at all corners of the switch arrangements and in the middle between these symmetry points to arrange.
  • the resilient Elements 5, 15 are provided on the front plate-side switching element 1 and the locking pin 20 engaging therein advanced from the back of the PCB.
  • the switching element 1 advantageously arranged symmetrically to the longitudinal axis 35 Provided pin that has a locking button.
  • the base element 2 are in the area of in 1, a pair of clips provided when the two elements are pushed together 1 and 2 include the pen.
  • This arrangement has the Advantage that no holes are provided in the printed circuit board 10 Need to become.
  • the disadvantage of that is that in general each switch unit has such a snap connection, what with a large number of switch housings too leads to considerable forces.
  • it can also two types of mounting elements 11 in the base elements 2 be provided, a type with spring elements and a type without these.
  • the switching element 1 via said symmetrical to the longitudinal axis 35 arranged first pin.
  • second pin is provided, one over the printed circuit board 10 projecting, the switching element 1 remote shaft and then fork-like in the direction of the switching element 1 branches to grasp and lock the first pin.
  • 3 to 5 finally show a side view, a Bottom view and a partially sectioned view of one Pin 40 according to a second embodiment.
  • the bracket elements 5 and 15 corresponding to FIG. 1 aligned but rigid. Is opposite to these a pin 40 is provided, which extends over one of the printed circuit boards 10 projecting, the switching element 1 remote shaft 41, which has two holding webs 42. In the direction of the switching element 1 it branches into two through a slot 46 separate spring legs 43 and 44, which are particularly advantageous have cams 45 to stare into here Elements 5 and 15 engage with the hook 8 and the circuit board 10 in relation to the front panel.
  • the number of resilient elements 5 and 15 or 43 and 44 different to choose, especially three or four. It is also possible, to equip the tips of the resilient elements without hooks 8 and the pin 20, for example, run out in a wedge shape allow. The locking would then be here for the user indicated that the locking cam 23 behind the guide 18 comes to rest. Up to this point then the, for example, frusto-conical pin 20 in the enclosed Free space around the longitudinal axis 35 tapering resilient Advance elements 5 and 15.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Description

Die Erfindung betrifft ein Schaltergehäuse für einen elektrischen Schalter gemäss dem Oberbegriff des Anspruchs 1.The invention relates to a switch housing for an electrical Switch according to the preamble of claim 1.

Ein Schaltergehäuse der eingangs genannten Art ist aus der DE 39 01 533 A1 bekannt. Ein solcher Schalter wird in einer Schalttafel oder Schaltwarte von der Schalttafelfrontseite her bedient. Er steht hierfür über die Frontplatte vor und ist rückseitig an einer Leiterplatte angeschlossen, die von der Frontplatte genau distanziert werden muss. Dafür verfügt das vordere Schaltergehäuse über einen Schaft, in den von jenseits der Leiterplatte eine Schraube eingedreht werden kann, womit der Schalter jeweils direkt mit der Leiterplatte befestigbar ist.A switch housing of the type mentioned is from DE 39 01 533 A1 known. Such a switch is in one Control panel or control room from the front of the control panel served here. To do this, it projects over the front panel and is connected on the back to a circuit board that is manufactured by the front panel must be precisely spaced. For that the front switch housing over a shaft, in the of a screw can be screwed in beyond the circuit board can, with which the switch directly with the circuit board is attachable.

Ein anderes solches Schaltergehäuse für eine Schalttafel oder Schaltwarte ist aus der EP-A-0 402 609 der Anmelderin bekannt. Im allgemeinen stehen eine Reihe von solchen Schaltern gleichmässig über die Frontplatte vor. Bei der EP-A-0 402 609 wird das Schaltergehäuse mit einem Flansch versehen, so dass dieses jeweils an einer Leiterplatte direkt befestigbar ist.Another such switch housing for a panel or Control room is known from the applicant's EP-A-0 402 609. There are generally a number of such switches evenly over the front panel. EP-A-0 402 609 the switch housing is provided with a flange so that this can be attached directly to a circuit board.

Damit ist es jeweils möglich, die sonst beim Stand der Technik bekannten Distanzhaltebolzen zu vermeiden, die einen hohen Montageaufwand erfordern. Die Schaltergehäuse nach der DE 39 01 533 A1 oder der EP-A-0 402 609 weisen allerdings den Nachteil auf, dass sie in einem getrennten Arbeitsgang auf die Leiterplatte aufgesetzt werden müssen. Nach der Vornahme der Verbindung mit der Leiterplatte sind sie nicht mehr leicht trennbar und somit wartungsunfreundlich. This makes it possible in any case, which is otherwise the case in the prior art to avoid known spacer bolts that have a high Require assembly effort. The switch housing according to the DE 39 01 533 A1 or EP-A-0 402 609, however, have the Disadvantage on that they are in a separate operation the circuit board must be put on. After the making they are no longer connected to the circuit board easily separable and therefore not easy to maintain.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Schaltergehäuse der eingangs genannten Art anzugeben, welches in einfacher Weise die elektrische und mechanische Verbindung eines Schalters mit der ihm zugeordneten Leiterplatte ermöglicht.The invention is based on this prior art the task of a switch housing of the aforementioned Specify which, in a simple manner, the electrical and mechanical connection of a switch to it assigned circuit board allows.

Erfindungsgemäss wird diese Aufgabe gelöst durch die kennzeichnenden Merkmale des Anspruchs 1. According to the invention this object is achieved by the characterizing Features of claim 1.

Dadurch, dass das Schaltergehäuse aus zwei modular aufgebauten Elementen besteht, die vormontierbar und leicht kombinierbar sind, wird erreicht, dass die diese Schaltergehäuse umfassenden Schalter sehr montagefreundlich und zudem in einfacher Weise austauschbar und damit wartungsfreundlich sind. Es ist damit ein haltbares und doch lösbares Zusammensetzen einer mit den einen vormontierten Elementen der Schaltergehäuse versehenen Leiterplatte mit einer mit den anderen vormontierten Elementen der Schaltergehäuse versehenen Frontplatte möglich, ohne das zusätzliche Distanz haltende Elemente vorgesehen sein müssen.Because the switch housing consists of two modular structures There are elements that can be pre-assembled and easily combined is achieved that the switch housing comprehensive switch very easy to install and also in simple Are interchangeable and therefore easy to maintain. It is a durable and yet detachable assembly one with the one pre-assembled elements of the switch housing provided circuit board with one pre-assembled with the others Elements of the switch housing provided front panel possible without the additional spacing elements must be provided.

Die Erfindung wird nun anhand der beiliegenden schematischen Zeichnungen an Ausführungsbeispielen beispielsweise erläutert. Es zeigen:

Fig. 1
eine perspektivische Darstellung eines teilweise geschnittenen Schaltergehäuses gemäss einem ersten Ausführungsbeispiel vor dem Zusammenbau,
Fig. 2
eine Draufsicht auf das Kerngehäuse eines Schaltergehäuses nach Figur 1, und
Fig. 3 bis 5
eine Seitenansicht, eine Unteransicht und eine teilweise geschnittene Ansicht auf einen Stift gemäss einem zweiten Ausführungsbeispiel.
The invention will now be explained with reference to the accompanying schematic drawings of exemplary embodiments. Show it:
Fig. 1
2 shows a perspective illustration of a partially sectioned switch housing according to a first exemplary embodiment before assembly,
Fig. 2
a plan view of the core housing of a switch housing according to Figure 1, and
3 to 5
a side view, a bottom view and a partially sectioned view of a pin according to a second embodiment.

Die Figur 1 zeigt in einer schematischen Darstellung eine teilweise geschnittene Ansicht eines Schaltergehäuses gemäss einem Ausführungsbeispiel der Erfindung.1 shows a schematic representation of a partially sectioned view of a switch housing according to an embodiment of the invention.

Das Schaltergehäuse besteht aus zwei Elementen, die mit den Bezugszeichen 1 und 2 versehen sind. Das Schaltelement 1 verfügt über einen überstehenden Umkreisrand 3, der über die Frontseite einer Bedienfläche oder Frontplatte 30 einer Schalttafel, wie in Fig. 2 zu erkennen, übersteht. Der Korpus 4 des Schaltelementes 1 befindet sich demgemäss hinter der Frontplatte der Schalttafel. Bei dem dargestellten Schalter handelt es sich um einen in seiner Bedienfläche quadratisch ausgestalteten Umschalter mit einer internen Beleuchtung. Die Frontform des Schalters kann jedoch gleichfalls rund oder rechteckig gewählt sein. Es kann sich bei dem Schaltelement 1 beispielsweise um einen Ein-Aus-Schalter, um einen Wechselschalter oder um einen Schlüsselschalter handeln. Die Funktion des Schaltelementes 1 ist von der gewählten Bedienfront unabhängig.The switch housing consists of two elements that match the Reference numerals 1 and 2 are provided. The switching element 1 has over a protruding circumferential edge 3, which over the Front of a control surface or front panel 30 one Control panel, as can be seen in Fig. 2, survives. The body 4 of the switching element 1 is accordingly behind the Front panel of the control panel. In the switch shown it is a square in its control surface designed switch with internal lighting. The However, the front shape of the switch can also be round or be chosen rectangular. The switching element 1 for example, an on-off switch, a two-way switch or a key switch. The function of the switching element 1 is from the selected operating front independently.

Das Schaltelement 1 verfügt jeweils über zwei federnden Elemente 5 und 15, die in den Pfeilrichtungen des Doppelpfeiles 6 in elastischer Weise bewegbar sind. Die Federelemente 5 und 15 verlaufen parallel zur Längsachse 35 des Schaltgehäuses. Sie verfügen vorteilhafterweise an ihrem unteren Ende über eine Auflauframpe 7, die in einem nach innen gebogenen und überstehenden Hakenelement 8 endet.The switching element 1 has two resilient elements 5 and 15 in the arrow directions of the double arrow 6 are movable in an elastic manner. The spring elements 5 and 15 run parallel to the longitudinal axis 35 of the switch housing. They advantageously have at their lower end a ramp 7, which is bent in an inward and protruding hook element 8 ends.

Mit dem Bezugszeichen 9 ist ein elektrischer Kontakt bezeichnet, der im Zusammenspiel mit dem durch die Schnittansicht der Fig. 1 nicht dargestellten, gegenüberliegenden zweiten elektrischen Kontakt für eine Anschaltung des im Schaltelement 1 vorgesehenen Leuchtelementes vorgesehen ist. Natürlich können die elektrischen Kontakte 9 weggelassen werden, wenn keine entsprechende Leuchtfunktion im Schaltelement 1 vorgesehen ist. Das dem Schaltelement 1 gegenüberliegende und komplementäre Basiselement 2 ist auf der Leiterplatte 10 befestigt. Dies kann durch eine Reihe von Verfahren geschehen, insbesondere durch die Verlötung der elektrischen Verbindungen zwischen der auf der Leiterplatte 10 vorgesehenen Verdrahtung und den zugeordneten Kontaktstiften des Basiselementes 2. The reference number 9 denotes an electrical contact, that in interaction with that through the sectional view 1, not shown, opposite second electrical contact for switching on in the switching element 1 provided lighting element is provided. Naturally the electrical contacts 9 can be omitted if no corresponding lighting function is provided in the switching element 1 is. The one opposite and complementary to the switching element 1 Base element 2 is fastened on the printed circuit board 10. This can be done through a number of procedures especially by soldering the electrical connections between the wiring provided on the printed circuit board 10 and the associated contact pins of the base element Second

Das Basiselement 2 ist in einer geschnittenen Darstellung dargestellt, wobei insbesondere das Montageelement 11 vollständig durchgeschnitten und halbiert dargestellt ist. Mit dem Bezugszeichen 12 ist die eine Schalteinheit bezeichnet, die über seitliche Rastansätze 13 verfügt, die in den Seitenflügeln 14 des Montageelementes 11 einrasten. Die Schalteinheit 12 verfügt insbesondere über einen Stössel 25, der mit einem in dem Schaltelement 1 vorgesehenen komplementären Element den eigentlichen Schaltvorgang in der komplementären Schalteinheit 12 auslöst.The base element 2 is in a sectional view shown, in particular the mounting element 11 completely is shown cut and cut in half. With reference number 12 denotes a switching unit, which has side latching lugs 13 in the side wings 14 of the mounting element 11 engage. The switching unit 12 has in particular a plunger 25, which with a complementary element provided in the switching element 1 the actual switching process in the complementary Switch unit 12 triggers.

In baugleicher Ausgestaltung der hier dargestellten Hälfte des Basiselementes 2 kann auf der gegenüberliegenden Seite des Montageelementes 11 eine zweite Schalteinheit 12 vorgesehen sein. Die Anordnung der Schalteinheiten 12 und mit ihnen der zugeordneten Stössel 25 hängt von der gewählten Schaltfunktion des Schalters, bestehend aus den Elementen 1 und 2, ab. Es kann insbesondere bei Tastern auch nur eine einzige Schalteinheit 12 vorgesehen sein, wobei de in dem Montageelement 11 vorgesehene Raum von einem Blindelement ausgefüllt wird.In an identical design of the half shown here of the base element 2 can on the opposite side of the mounting element 11, a second switching unit 12 is provided his. The arrangement of the switching units 12 and with them the associated plunger 25 depends on the selected switching function the switch, consisting of elements 1 and 2, from. In the case of push buttons in particular, only one can be used Switching unit 12 may be provided, de being in the mounting element 11 provided space filled by a dummy element becomes.

Es ist insbesondere zu erkennen, dass das Montageelement 11 zwischen den beiden Schaltelementen 12 über einen Hohlraum 16 verfügt, der durch zwei Seitenführungen 17 die Mündung 33 für die federnden Elemente 5 und 15 begrenzt.It can be seen in particular that the mounting element 11 between the two switching elements 12 via a cavity 16 has the mouth 33 by two side guides 17 for the resilient elements 5 and 15 limited.

Von der Bodenseite her verfügt das Montageelement 11 über eine eine ringförmige Öffnung freilassende Führung 18, die genau über einem entsprechend vorgebohrten Loch 19 in der Leiterplatte 10 angeordnet ist. Durch dieses Loch 19 ist ein Arretierungsstift 20 mit der Längsachse 35 fluchtend in das Montageelement 11 vorgeschoben. Das Montageelement 11 bildet mit seiner Rückseite 36 eine Anschlagfläche, die zumindest an entsprechend vorgesehenen Flächen oder Punkten auf der Leiterplatte 10 aufliegt.From the bottom side, the mounting element 11 has a an annular opening exposing guide 18 that is accurate over a corresponding predrilled hole 19 in the circuit board 10 is arranged. Through this hole 19 is a locking pin 20 aligned with the longitudinal axis 35 in the Mounting element 11 advanced. The mounting element 11 forms with its back 36 a stop surface that at least on correspondingly provided areas or points on the circuit board 10 rests.

Der Arretierungsstift 20 ist vorzugsweise, wie in der Figur 1 dargestellt, symmetrisch aufgebaut. Er verfügt über einen Verriegelungskopf 21, daran anschliessend einen Schaft 22, an den sich ein Verriegelungsnocken 23 anschliesst. Wie erwähnt wiederholen sich dann nach einem kurzen mittleren Schaft diese Elemente auf der anderen Seite des Arretierungsstiftes, so dass bei der Montage nicht darauf geachtet werden muss, in welcher Orientierung der Arretierungsstift 20 durch das Loch 19 in die Leiterplatte 10 vorgeschoben wird. Die Bezugszeichen für die hier angesprochene symmetrisch ausgestalteten Elemente sind jeweils gestrichelt ausgeführt. Bei einer anderen Ausgestaltung der Arretierungsstifte 20 können diese auch asymmetrisch ausgestaltet sein und insbesondere einen speziell gut greifbaren Griffknopf aufweisen.The locking pin 20 is preferably as in FIG. 1 shown, constructed symmetrically. He has one Locking head 21, followed by a shaft 22 which is followed by a locking cam 23. As mentioned then repeat after a short middle shaft Elements on the other side of the locking pin, see above that no care must be taken during assembly in what orientation the locking pin 20 through the hole 19 is advanced into the circuit board 10. The reference numbers for the symmetrical design mentioned here Elements are shown with dashed lines. Another one The design of the locking pins 20 can also be done be designed asymmetrically and in particular one specifically have easy-grip handle button.

Die Funktion der Verriegelung des Schaltergehäuses ist nun leicht einsichtig. Im allgemeinen ist das Schaltelement 1 bereits fest mit der Frontplatte verbunden. Anschliessend wird die Leiterplatte 10 mit dem auf diesem vormontierten Basiselement 2 gegen das Schaltelement 1 vorgeschoben. Dabei fügen sich die federnden Enden 5 und 15 durch die Mündung 33 in den Hohlraum 16 ein und die elektrischen Kontakte 9, sofern vorgesehen, gleiten in ihnen entsprechende Aufnahmen 24, in welchen der elektrische Kontakt hergestellt wird. Anschliessend wird der Arretierungsstift 20 in das zusammengesetzte Basiselement 2 und Schaltelement 1 eingeführt, so dass die federnden Enden 5 und 15 sich mit dem Verriegelungskopf 21 verriegeln. Es wird damit eine sichere und feste Verbindung zweischen der Frontplatte der Schalttafel und der ihr zugeordneten Leiterplatte 10 erreicht, ohne dass Distanzbolzen verwendet werden müssen. The function of locking the switch housing is now easily understandable. In general, the switching element 1 is already firmly connected to the front panel. Then will the printed circuit board 10 with the base element preassembled on this 2 advanced against the switching element 1. Add in the process the resilient ends 5 and 15 through the mouth 33 in the Cavity 16 and the electrical contacts 9, if provided, corresponding receptacles 24 slide in them the electrical contact is made. Subsequently the locking pin 20 into the assembled base member 2 and switching element 1 introduced so that the resilient Ends 5 and 15 lock with the locking head 21. A secure and firm connection will thus be in between the front panel of the control panel and the one assigned to it Printed circuit board 10 reached without using spacers Need to become.

Die Figur 2 zeigt eine schematische Ansicht einer Anordnung von acht Schaltelementen in einem vorgegebenen Raster unter Einsatz der erfindungsgemässen Schaltergehäuse. Gleiche Merkmale sind in allen Figuren mit den gleichen Bezugszeichen gekennzeichnet.FIG. 2 shows a schematic view of an arrangement of eight switching elements in a given grid below Use of the switch housing according to the invention. Same features are identified by the same reference symbols in all the figures.

In der Figur 2 ist insbesondere erkennbar, dass die frontseitigen Schaltelemente 1 in einer Frontplatte 30 eingesetzt sind. Es wird dabei durch die Anordnung der Schalter ein Raster vorgegeben, welches von der Elektronik zu beachten ist. Diese verfügt über eine Leiterplatte 10, von der hier natürlich nur der interessierende Ausschnitt mit den zugehörigen acht Basiselementen 2 dargestellt ist. Es ist direkt erkennbar, dass auf eine standardisierte Leiterplatte zurückgegriffen werden kann, die in dem dargestellten Fall acht Kontaktflächen 31 je Schalter aufweist. Darüber hinaus sind zwei Bohrungen 34 vorgesehen, durch die die Kontakte 32 für die Leuchtfunktion jedes Schaltelementes 1 durch die Leiterplatte 10 hindurchragen können. Ferner sind entsprechend zentriert und konzentrisch zur Längsachse 35 je Schalter die Löcher 19 zur Durchführung der Stifte 20 in die Leiterplatte eingebracht.In particular, it can be seen in FIG. 2 that the front Switching elements 1 used in a front panel 30 are. The arrangement of the switches creates a grid specified which is to be observed by the electronics. This has a printed circuit board 10, of which here, of course only the section of interest with the corresponding eight basic elements 2 is shown. It is immediately recognizable that resorted to a standardized circuit board can be the eight contact surfaces in the case shown 31 per switch. In addition, there are two Bores 34 are provided through which the contacts 32 for the Illuminating function of each switching element 1 through the circuit board 10 can protrude. They are also centered accordingly and concentric to the longitudinal axis 35 per switch the holes 19th introduced to carry out the pins 20 in the circuit board.

Es ist klar erkennbar, dass mit den Basiselementen 2 ein direkt mit der Leiterplatte 10 verbindbares Schaltelement zur Verfügung steht, welches ein einheitliches Layout aufweist. Dadurch kann der Verdrahtungsaufwand der Schalteranordnung reduziert werden. Diese Basiselemente 2 mit ihrem Montageelement 11 und den jeweils je Schalter vorgesehenen, einander gegenüberliegenden zwei Schalteinheiten 12 werden vorab auf der Leiterplatte 10 befestigt, z.B. gelötet. In gleicher Weise werden unabhängig davon die einzelnen Schaltelemente 1 an der Frontplatte 30 montiert. It can be clearly seen that with the basic elements 2 a direct with the circuit board 10 connectable switching element for Is available, which has a uniform layout. This can reduce the wiring complexity of the switch arrangement be reduced. These basic elements 2 with their mounting element 11 and each switch provided, each other Opposing two switching units 12 are opened in advance the circuit board 10, e.g. soldered. In the same way regardless of the individual switching elements 1 the front panel 30 mounted.

Die beiden einzeln vormontierten Module werden nun durch Einfügen der Federelemente 5 und 15 in die entsprechenden Hohlräume 16 der Montageelemente 11 zusammengefügt. Diese Schnittstelle ist einfach und toleranzunabhängig. Die mechanische Verbindung wird durch den vorzugsweise symmetrisch ausgestatteten Zug- und Druckstift 20 ermöglicht, welcher an einer vorbestimmten Zahl von Schaltergehäusen eingefügt wird. Bei dem dargestellten Ausführungsbeispiel einer Schalteranordnung von zwei mal vier Elementen ist es ausreichend, wie dargestellt, an diagonal gegenüberliegenden Ecken jeweils einen einzelnen Arretierungsstift 20 vorzusehen. Bei grösseren Schalteranordnungen und grösseren Leiterplatten sind Arretierungsstifte in 20 insbesondere an allen Ecken der Schalteranordnungen sowie an mittig zwischen diesen liegenden Symmetriepunkten anzuordnen.The two individually pre-assembled modules are now inserted the spring elements 5 and 15 in the corresponding cavities 16 of the assembly elements 11 assembled. This Interface is simple and independent of tolerance. The mechanical Connection is preferably symmetrical through the equipped pull and push pin 20, which allows a predetermined number of switch housings is inserted. In the illustrated embodiment of a switch arrangement of two times four elements, it is sufficient how shown, one at diagonally opposite corners to provide individual locking pin 20. With larger ones Switch arrangements and larger circuit boards are locking pins in 20 in particular at all corners of the switch arrangements and in the middle between these symmetry points to arrange.

Die Handhabung dieser Verbindung des Stiftes 20 mit den Federelementen 5 und 15 ist sehr einfach, da die Schaltelemente 1 durch einen einfachen Druck auf die Stifte 20 und einen Zug auf die Leiterplatte 10 gelöst werden können. Damit ist diese Verbindung sowohl bei ihrer Herstellung als auch bei ihrer Loslösung leiterplattenrückseitig ohne zusätzliches Montagewerkzeug durchführbar.The handling of this connection of the pin 20 with the spring elements 5 and 15 is very simple since the switching elements 1 with a simple push on the pins 20 and a pull can be solved on the circuit board 10. So this is Connection both in their manufacture and in their Detachment on the back of the PCB without additional assembly tools feasible.

Es bestehen somit keine zusätzlichen mechanischen Verbindungen, zum Beispiel Distanzhalter, noch ist eine Vorfertigung der Schaltereinheiten notwendig. Insbesondere lassen sich in einfacher Weise die Schaltelemente 1 beliebig ändern, ohne die Schaltung zu verändern. In gleicher Weise lassen sich defekte Schaltelemente 12 aus dem Montageelement 11 entfernen und ersetzen.There are therefore no additional mechanical connections, for example spacers, is still a prefabrication of the switch units necessary. In particular, easily change the switching elements 1 without to change the circuit. Defects can be made in the same way Remove switching elements 12 from assembly element 11 and replace.

In dem dargestellten Ausführungsbeispiel sind die federnden Elemente 5, 15 am frontplattenseitigen Schaltelement 1 vorgesehen und der in diese eingreifende Arretierungsstift 20 ist von der Leiterplattenrückseite vorgeschoben. Natürlich ist auch eine umgekehrte Anordnung der Elemente der mechanischen Verbindung möglich. Das heisst, am Schaltelement 1 ist ein vorteilhafterweise symmetrisch zur Längsachse 35 angeordneter Stift vorgesehen, der über einen Arretierungsknopf verfügt. Diesem gegenüber sind in dem Basiselement 2 im Bereich des in der Fig. 1 dargestellten Hohlraume 16 ein Paar von Klammern vorgesehen, die bei einem Ineinanderschieben der beiden Elemente 1 und 2 den Stift umfassen. Diese Anordnung hat den Vorteil, dass keine Bohrungen in der Leiterplatte 10 vorgesehen werden müssen. Dafür ist von Nachteil, dass im Allgemeinen jede Schaltereinheit über eine solche Rastverbindung verfügt, was bei einer grossen Anzahl von Schaltergehäusen zu erheblichen aufzuwendenden Kräften führt. Es können natürlich auch zwei Arten von Montageelementen 11 in den Basiselementen 2 vorgesehen sein, eine Art mit Federelementen und eine Art ohne diese.In the illustrated embodiment, the resilient Elements 5, 15 are provided on the front plate-side switching element 1 and the locking pin 20 engaging therein advanced from the back of the PCB. of course is also a reverse arrangement of the elements of the mechanical Connection possible. That is, there is a on the switching element 1 advantageously arranged symmetrically to the longitudinal axis 35 Provided pin that has a locking button. In contrast, are in the base element 2 in the area of in 1, a pair of clips provided when the two elements are pushed together 1 and 2 include the pen. This arrangement has the Advantage that no holes are provided in the printed circuit board 10 Need to become. The disadvantage of that is that in general each switch unit has such a snap connection, what with a large number of switch housings too leads to considerable forces. Of course it can also two types of mounting elements 11 in the base elements 2 be provided, a type with spring elements and a type without these.

In einer weiteren, in den Zeichnungen nicht dargestellten Abwandlung des oben beschriebenen Ausführungsbeispiels verfügt das Schaltelement 1 über den besagten symmetrisch zur Längsachse 35 angeordneten ersten Stift. Ihm gegenüber ist ein zweiter Stift vorgesehen, der über einen aus der Leiterplatte 10 ragenden, dem Schaltelement 1 fernseitigen Schaft verfügt und der sich dann in Richtung des Schaltelementes 1 gabelartig verzweigt, um den ersten Stift zu umgreifen und zu arretieren.In a further modification, not shown in the drawings of the embodiment described above the switching element 1 via said symmetrical to the longitudinal axis 35 arranged first pin. There is one opposite him second pin is provided, one over the printed circuit board 10 projecting, the switching element 1 remote shaft and then fork-like in the direction of the switching element 1 branches to grasp and lock the first pin.

Die Fig. 3 bis 5 schlieslich zeigen eine Seitenansicht, eine Unteransicht und eine teilweise geschnittene Ansicht auf einen Stift 40 gemäss einem zweiten Ausführungsbeispiel. Hierbei sind die Klammerelemente 5 und 15 entsprechend der Fig. 1 ausgerichtet allerdings starr ausgelegt. Diesen gegenüber ist ein Stift 40 vorgesehen, der über einen aus der Leiterplatte 10 ragenden, dem Schaltelement 1 fernseitigen Schaft 41 verfügt, der zwei Haltestege 42 aufweist. In Richtung des Schaltelementes 1 verzweigt er sich in zwei durch einen Schlitz 46 getrennte Federschenkel 43 und 44, die insbesondere vorteilhafterweise über Nocken 45 verfügen, um in die hier starren Elemente 5 und 15 mit den Haken 8 einzugreifen und die Leiterplatte 10 in Bezug auf die Frontplatte zu arretieren.3 to 5 finally show a side view, a Bottom view and a partially sectioned view of one Pin 40 according to a second embodiment. in this connection are the bracket elements 5 and 15 corresponding to FIG. 1 aligned but rigid. Is opposite to these a pin 40 is provided, which extends over one of the printed circuit boards 10 projecting, the switching element 1 remote shaft 41, which has two holding webs 42. In the direction of the switching element 1 it branches into two through a slot 46 separate spring legs 43 and 44, which are particularly advantageous have cams 45 to stare into here Elements 5 and 15 engage with the hook 8 and the circuit board 10 in relation to the front panel.

Schliesslich ist es bei allen Ausführungsbeispielen möglich, die Anzahl der federnden Elemente 5 und 15 oder 43 und 44 anders zu wählen, insbesondere drei oder vier. Es ist auch möglich, die Spitzen der federnden Elemente ohne Haken 8 auszustatten und den Stift 20 beispielsweise keilförmig auslaufen zu lassen. Hier würde für den Benutzer die Verriegelung dann dadurch angezeigt, dass der Verriegelungsnocken 23 hinter die Führung 18 zu liegen kommt. Bis zu diesem Punkt muss dann der beispielsweise stumpfkonische Stift 20 in die sich im umschlossenen Freiraum um die Längsachse 35 verjüngenden federnden Elemente 5 und 15 vorschieben.Finally, it is possible with all of the exemplary embodiments the number of resilient elements 5 and 15 or 43 and 44 different to choose, especially three or four. It is also possible, to equip the tips of the resilient elements without hooks 8 and the pin 20, for example, run out in a wedge shape allow. The locking would then be here for the user indicated that the locking cam 23 behind the guide 18 comes to rest. Up to this point then the, for example, frusto-conical pin 20 in the enclosed Free space around the longitudinal axis 35 tapering resilient Advance elements 5 and 15.

Neben der dargestellten fluchtenden Orientierung der Elemente 1, 2, 5, 15 und 20 mit der Längsachse 35 des Schaltergehäuses ist auch eine exzentrische Anordnung möglich. Eine solche weist allerdings den Nachteil der unsymmetrischen Kraftbelastung des Schaltergehäuses auf. Insbesondere ist aber auch das Vorsehen von zwei Arretierungsstiften 20 möglich, die bezüglich der Längsachse 35 symmetrisch angeordnet sind.In addition to the illustrated alignment of the elements 1, 2, 5, 15 and 20 with the longitudinal axis 35 of the switch housing an eccentric arrangement is also possible. Such however, has the disadvantage of asymmetrical force loading of the switch housing. But in particular is also the provision of two locking pins 20 possible with respect the longitudinal axis 35 are arranged symmetrically.

Claims (10)

  1. A switch housing for an electric switch formed by two switch elements, on the front end of which there is present a stop surface which acts against a front plate (30) and can be brought to stop against the front plate (30) by means of a fastening element (3), the switch housing having on its rear a mounting surface (36) which is parallel to the stop surface and it being possible for the switch housing to be fastened via the mounting surface (36) on a printed circuit board (10), wherein the switch housing is assembled from two elements (1, 2) such that one switch element (1) is connectable with the front plate (30), and that the other of said switch elements (2) is connectable to the printed circuit board (10), characterized in that one of said elements (1 or 2) comprises a clip (5, 15) which can be brought into connection with a locking pin (20; 40) arranged in or displaceable in relation to the other of the two elements (2 or 1), with the result that the switch housing formed by the two switch elements (1 and 2) is in a functional contact and in a mutual releasable fixed mechanical connection.
  2. The switch housing according to claim 1, characterized in that the locking pin (20; 40) has a locking head (21; 45), and that the clip (5, 15) is connectable with the locking head (21; 45) of the locking pin (20; 40).
  3. The switch housing according to one of the preceding claims, characterized in that the clip (5, 15) is of resilient configuration and has at least two clip arms.
  4. The switch housing according to one of the preceding claims, characterized in that the first switch element (1) having the operating key has two clip arms (5, 15) which engage in a cavity (16) provided in the second switch element (2), which can be fastened on a printed circuit board (10), and in that the locking pin (20) can be pushed into the second switching element (2) on the opening of the second switching element (2) on the side of the circuit board.
  5. The switch housing as claimed in claim 4, characterized in that said locking pin (20) is formed symmetrically relative to its longitudinal axis (35), and has at least two cams (21, 23, 21', 23').
  6. The switch housing as in one of the preceding claims, characterized in that said second switch element (2) has a mounting core (11) with openings (16, 33) at both ends of the core, and on which ends it is possible to fasten (13) a switch unit (12) at least at one end, which can be brought into engagement with a complementary element of said first switch element (12).
  7. The switch housing according to claim 5 or 6, characterized in that electric contact elements (9) are arranged parallel to the longitudinal axis (35) of the switch housing on the first switch element (1), which can be pushed into an opening provided in the switch unit (12) of the second switch element (2).
  8. The switch housing according to one of claims 1 to 3, characterized in that the first switch element (1) having the operating key has the locking pin, which engages in a cavity (16) provided in the second switch element (2), which can be fastened on a printed circuit board (10) , and that at least two clip arms can be pushed forward from the opening of the second switch element (2) on the side of the circuit board into the second switch element (2) and around said locking pin.
  9. The switch housing according to claim 8, characterized in that the clip arms in a second pin end in a shaft which projects beyond the printed circuit board (10) on its side remote from the switch housing and opens in the cavity (16) provided in the second switch element (2) into the at least two clip arms, with the result that the locking pin can be gripped by the latter.
  10. The switch housing according to claim 1 or 2, characterized in that the clip (5, 15) is of rigid structure and has at least two clip arms and in that the locking pin (40) comprises two spring limbs (43, 44), which can be inserted resiliently into the rigid clip.
EP98810093A 1998-02-09 1998-02-09 Swithcasing for electrical switch Expired - Lifetime EP0935269B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP98810093A EP0935269B1 (en) 1998-02-09 1998-02-09 Swithcasing for electrical switch
DE59811896T DE59811896D1 (en) 1998-02-09 1998-02-09 Switch housing for electrical switches
US09/246,457 US6066816A (en) 1998-02-09 1999-02-09 Switch housing for an electric switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810093A EP0935269B1 (en) 1998-02-09 1998-02-09 Swithcasing for electrical switch

Publications (2)

Publication Number Publication Date
EP0935269A1 EP0935269A1 (en) 1999-08-11
EP0935269B1 true EP0935269B1 (en) 2004-09-01

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EP98810093A Expired - Lifetime EP0935269B1 (en) 1998-02-09 1998-02-09 Swithcasing for electrical switch

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US (1) US6066816A (en)
EP (1) EP0935269B1 (en)
DE (1) DE59811896D1 (en)

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US6870114B2 (en) * 2001-03-12 2005-03-22 Joseph W. Cole Method and apparatus for removing and replacing bulb of push-button type electrical switch
US20040118669A1 (en) * 2001-03-12 2004-06-24 Mou Oliver C. Gaming machine illuminated push-button switch
US6590176B2 (en) * 2001-03-12 2003-07-08 Joseph W. Cole Push-button type electrical switch
US6987233B2 (en) * 2001-03-12 2006-01-17 Magtech Usa, Inc. Push-button type electrical switch having secondary conductive pathway to ground
US6608269B1 (en) * 2002-04-03 2003-08-19 Chih-Yuan Wu Waterproof switch
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US3681552A (en) * 1970-07-23 1972-08-01 Switchcraft Pushbutton electrical switch unit
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EP0935269A1 (en) 1999-08-11
US6066816A (en) 2000-05-23
DE59811896D1 (en) 2004-10-07

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