EP2393097A1 - Switch with self-adjusting switch plunger guide - Google Patents

Switch with self-adjusting switch plunger guide Download PDF

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Publication number
EP2393097A1
EP2393097A1 EP11166342A EP11166342A EP2393097A1 EP 2393097 A1 EP2393097 A1 EP 2393097A1 EP 11166342 A EP11166342 A EP 11166342A EP 11166342 A EP11166342 A EP 11166342A EP 2393097 A1 EP2393097 A1 EP 2393097A1
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EP
European Patent Office
Prior art keywords
switch
guide projection
guide
switch according
groove
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
EP11166342A
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German (de)
French (fr)
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EP2393097B1 (en
Inventor
Jürgen Michael Schnitzer
Harald Held
Silvio Richter
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Flextronics Automotive GmbH and Co KG
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Flextronics Automotive GmbH and Co KG
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Publication of EP2393097A1 publication Critical patent/EP2393097A1/en
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Publication of EP2393097B1 publication Critical patent/EP2393097B1/en
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    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/06—Actuators to avoid sticking in on position

Definitions

  • the present invention relates to a switch, in particular for a roof control unit of a vehicle, with a switch plunger, which is displaceably guided on at least three sides in each case via a linear guide in a housing opening of the switch housing, wherein the linear guides each guided by a guide groove of the one part and a guided therein Guide projection of the other part are formed.
  • the linear guides are each formed by a guide groove of the switch housing and guided therein a guide projection of the switch plunger, wherein the groove cross section and the rectangular cross section of the guide projection are complementary to each other.
  • the management coordination of the two components is very complex, on the one hand to minimize the guide game as possible and on the other hand to avoid jamming of the switch plunger inside the guide safely.
  • the switch plunger is guided in a self-centering or self-adjusting manner in the switch housing.
  • This self-centering tappet guide counteracts tilting and rotation of the switch plunger within the housing opening, so that the switch plunger is always aligned in the direction of displacement and thus not jammed in the linear guides.
  • the edges of the guide projection are rounded, in the case of curved groove flanks with a smaller radius, so that only one line contact occurs between the groove flanks and the edges.
  • the guide projection is resilient. This measure also leads to a self-adjustment of the switch plunger in the ram guides and has the significant advantage that the guide clearance between the switch plunger and the Switch housing can be selected from the outset narrower or greater tolerances than previously allowed. Because before the switch plunger stuck in the plunger guide, the guide projection springs back accordingly.
  • the guide projection may, for example, be resilient in the direction of its depth and / or in the transverse direction.
  • the guide projection is hollow inside and thus slightly resilient to the inside.
  • the guide projection has, between its two edges, a recess which is open towards the base of the groove and which can extend over the entire depth of the guide projection.
  • the in FIGS. 1 and 2 shown switch (push button) 1 is arranged for example in a roof control unit on the headliner of a vehicle and is used to turn on and off an interior lighting, such as a reading light.
  • the switch 1 comprises as a handle a rectangular in cross section switch plunger 2 , which is guided on three sides in each case via a linear guide (plunger guide) 3 in a housing opening 4 of the switch housing 5 against the action of a restoring force displaceable in the direction of the double arrow 6 and with an electrical switch contact (not shown) cooperates.
  • the restoring force can be formed, for example, by a compression spring (not shown), which acts between the switch plunger 2 and the switch housing 5.
  • the switch plunger 2 and the switch housing 5 are preferably plastic parts, wherein one of the two parts of polyoxymethylene (POM), (POM-PTFE), (PC-PTFE) and the other part of a PC-ABS plastic (polycarbonate ABS blend ), as well as all other material combinations, can be.
  • POM polyoxymethylene
  • PC-PTFE polycarbonate ABS blend
  • the linear guides 3 are each formed by a guide groove 7 of the switch housing 5 and guided therein a guide projection 8 of the switch plunger 2.
  • the two mutually opposite lateral groove flanks 9 of the guide groove 7 are curved inwardly towards the groove base 10 and, as in the exemplary embodiment shown, may be quarter-circle-shaped so as to form an overall semicircular guide groove 7.
  • the outwardly projecting guide projection 8 of the switch plunger 2 has a rectangular cross section and is therefore only with its two edges 11 at the two curved groove flanks 9.
  • the edges 11 1 are rounded with a radius smaller than the radius of the groove flanks 9, so that between the groove flanks 9 and the edges 11 only one line contact occurs.
  • the switching plunger 2 is self-centering or self-aligned over its entire guide length in the switch housing 5 and therefore exactly parallel to the guide grooves 7, ie in the direction of displacement 6, aligned.
  • This self-centering guide of the switch plunger 2 prevents the tilting and thus the jamming of the switch plunger 2, so a "key clamp" in the linear guides.
  • the switching plunger 2 on its fourth side on a guide projection 8, which is not performed in the switch housing 5, since otherwise the leadership of the switching plunger 2 would be overdetermined.
  • This fourth guide projection 8 therefore engages with all-round play in a receiving groove 12 of the switch housing 5, without being guided therein. Due to its four guide projections 8, the same switching plunger 2 can be used universally in different housing openings 4, in which the receiving groove 12 is provided on different sides of the housing opening 4.
  • the guide projections 8 In contrast to the ram guide the Fig. 3 in which the guide projections 8 are solid, are in the in Fig. 4 shown plunger guide 3, the guide projections 8 formed inside with a cavity 13 and thereby resiliently inwardly slightly. These resilient guide projections 8 support the self-adjustment of the switch plunger 2 in the plunger guides 3.
  • the guide clearance between the switch plunger 2 and the switch housing 5 can be selected from the outset narrower, or it can be tolerated larger tolerances. Because before the switch plunger 2 jams in the plunger guides 3, the guide projection 8 springs back accordingly.
  • Fig. 5 shows a further tappet guide 3, wherein the guide projection 8 between its two edges 11 has a groove bottom 10 toward open recess (parting line) 14 which extends over the entire depth of the guide projection 8.
  • the guide projection 8 located on both sides of the recess 8 two side walls 15 of the guide projection 8 at their free ends and thus also the there provided edges 11 in the transverse direction 16 resiliently formed, whereby the smallest possible guide clearance allows and larger tolerances can be allowed.
  • the two side walls 15 feather with their edges 11 in the transverse direction 16 back accordingly.
  • Fig. 6 shows a still further plunger guide 3, in which the mutually facing groove flanks 9 to the groove bottom 10 towards V-shaped converge.
  • the guide projection 8 is guided self-centering or self-adjusting, whereby the tilting and thus the jamming of the switching plunger 2 in the linear guides 3 are prevented.
  • the switch shown differs in Fig. 7 shown switch 1 only in that here exactly the other way around the three linear guides 3 are each formed by a guide groove 7 of the switch plunger 2 and guided therein a guide projection 8 of the switch housing 5.
  • the switch plunger 2 also has on its fourth side a guide groove 7, while the switch housing 5 has no guide projection on this side.
  • the restoring force of the switch plunger 2 may also be formed by two bow springs 17 , which are taken captively on two opposite sides between the switch plunger 2 and the switch housing 5.
  • the bow springs 17 are supported with their two strap ends 18 on the outside of the switch housing 5 and embrace with their central bracket portion 19, the guide projection 8 from below.
  • the middle bracket portion 18 is deflected by the guide projection 8 of the switch plunger 2 relative to the two strap ends 18, whereby the switch plunger 2 is stretched back to its original position.
  • the two bow springs 17 may also be interconnected, so be formed integrally by a single bow spring, whereby the handling during installation is improved and simplified.

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  • Push-Button Switches (AREA)

Abstract

The switch (1) has a flat-base tappet (2) displaceably guided in a housing opening (4) of a switch housing (5) at three sides via a linear guide (3). The linear guide is formed by a guiding groove (7) of the switch housing and a guide projection (8) of the flat-base tappet. Groove edges of the guiding groove are formed opposite to each other, inwardly curved to a groove base and formed in V-shape. The guide projection is formed at the groove edges. The guide projection is formed with springs, and comprises a recess to open the groove base between the edges.

Description

Die vorliegende Erfindung betrifft einen Schalter, insbesondere für eine Dachbedieneinheit eines Fahrzeugs, mit einem Schaltstößel, der an mindestens drei Seiten jeweils über eine Linearführung in einer Gehäuseöffnung des Schaltergehäuses verschiebbar geführt ist, wobei die Linearführungen jeweils durch eine Führungsnut des einen Teils und einen darin geführten Führungsvorsprung des anderen Teils gebildet sind.The present invention relates to a switch, in particular for a roof control unit of a vehicle, with a switch plunger, which is displaceably guided on at least three sides in each case via a linear guide in a housing opening of the switch housing, wherein the linear guides each guided by a guide groove of the one part and a guided therein Guide projection of the other part are formed.

Bei bekannten Schaltern mit verschiebbar geführten Schaltstößeln sind die Linearführungen jeweils durch eine Führungsnut des Schaltergehäuses und einen darin geführten Führungsvorsprung des Schaltstößels gebildet, wobei der Nutquerschnitt und der rechteckige Querschnitt des Führungsvorsprungs zueinander komplementär sind. Allerdings ist in der Praxis die Führungsabstimmung der beiden Bauteile sehr aufwändig, um einerseits das Führungsspiel möglichst zu minimieren und andererseits ein Verklemmen des Schaltstößels innerhalb der Führungsnuten sicher zu vermeiden.In known switches with displaceably guided switching tappets, the linear guides are each formed by a guide groove of the switch housing and guided therein a guide projection of the switch plunger, wherein the groove cross section and the rectangular cross section of the guide projection are complementary to each other. However, in practice, the management coordination of the two components is very complex, on the one hand to minimize the guide game as possible and on the other hand to avoid jamming of the switch plunger inside the guide safely.

Demgegenüber ist es die Aufgabe der vorliegenden Erfindung, bei einem Schalter der eingangs genannten Art die Stößelführungen dahingehend weiterzubilden, dass auch bei möglichst minimalem Führungsspiel ein Verklemmen des Schaltstößels sicher verhindert wird.In contrast, it is the object of the present invention, in a switch of the type mentioned in the pusher guides to the effect that even with minimal control game jamming of the switch plunger is reliably prevented.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die beiden einander gegenüberliegenden Nutflanken der Führungsnut zum Nutgrund hin nach innen gekrümmt sind oder V-förmig aufeinander zulaufen und dass der Führungsvorsprung jeweils nur mit einer Kante an den beiden Nutflanken anliegt.This object is achieved in that the two mutually opposite groove flanks of the guide groove are curved towards the groove bottom inward or converge toward each other in a V-shape and that the guide projection rests in each case with only one edge on the two groove flanks.

Durch die erfindungsgemäß ausgebildeten Linearführungen ist der Schaltstößel selbstzentrierend bzw. selbstjustierend im Schaltergehäuse geführt. Diese selbstzentrierende Stößelführung wirkt einem Verkippen und Verdrehen des Schaltstößels innerhalb der Gehäuseöffnung entgegen, so dass der Schaltstößel stets in der Verschieberichtung ausgerichtet ist und folglich in den Linearführungen nicht verklemmt.By virtue of the linear guides designed according to the invention, the switch plunger is guided in a self-centering or self-adjusting manner in the switch housing. This self-centering tappet guide counteracts tilting and rotation of the switch plunger within the housing opening, so that the switch plunger is always aligned in the direction of displacement and thus not jammed in the linear guides.

Vorzugsweise sind die Kanten des Führungsvorsprungs abgerundet, und zwar im Falle von gekrümmten Nutflanken mit einem kleineren Radius, so dass zwischen den Nutflanken und den Kanten jeweils nur eine Linienberührung auftritt.Preferably, the edges of the guide projection are rounded, in the case of curved groove flanks with a smaller radius, so that only one line contact occurs between the groove flanks and the edges.

Bei einer besonders bevorzugten Ausführungsform der Erfindung ist der Führungsvorsprung federnd ausgebildet. Diese Maßnahme führt ebenfalls zu einer Selbstjustierung des Schaltstößels in den Stößelführungen und hat den wesentlichen Vorteil, dass das Führungsspiel zwischen dem Schaltstößel und dem Schaltergehäuse von vorneherein enger gewählt werden kann oder dass größere Toleranzen als bisher zugelassen werden können. Denn bevor der Schaltstößel in der Stößelführung klemmt, federt der Führungsvorsprung entsprechend zurück. Der Führungsvorsprung kann beispielsweise in Richtung seiner Tiefe und/oder in Querrichtung federnd sein.In a particularly preferred embodiment of the invention, the guide projection is resilient. This measure also leads to a self-adjustment of the switch plunger in the ram guides and has the significant advantage that the guide clearance between the switch plunger and the Switch housing can be selected from the outset narrower or greater tolerances than previously allowed. Because before the switch plunger stuck in the plunger guide, the guide projection springs back accordingly. The guide projection may, for example, be resilient in the direction of its depth and / or in the transverse direction.

In einer vorteilhaften Weiterbildung dieser Ausführungsform ist der Führungsvorsprung innen hohl und dadurch nach innen leicht federnd.In an advantageous development of this embodiment, the guide projection is hollow inside and thus slightly resilient to the inside.

In einer anderen Weiterbildung weist der Führungsvorsprung zwischen seinen beiden Kanten eine zum Nutgrund hin offene Aussparung auf, die sich über die gesamte Tiefe des Führungsvorsprungs erstrecken kann. Durch diese Maßnahme sind die zu beiden Seiten der Aussparung befindlichen zwei Seitenwände des Führungsvorsprungs an ihren freien Enden und damit auch die dort vorgesehenen Kanten in Querrichtung federnd ausgebildet, wodurch einerseits ein möglichst geringes Führungsspiel ermöglicht und andererseits ein Tastenklemmer verhindert wird.In another development, the guide projection has, between its two edges, a recess which is open towards the base of the groove and which can extend over the entire depth of the guide projection. By this measure, located on both sides of the recess two side walls of the guide projection at its free ends and thus the edges provided there are transversely resilient, whereby on the one hand the smallest possible play clearance allows and on the other hand a Tastenklemmer is prevented.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche. Weitere Vorteile der Erfindung ergeben sich aus der Beschreibung und der Zeichnung. Ebenso können die vorstehend genannten und die noch weiter aufgeführten Merkmale je für sich oder zu mehreren in beliebigen Kombinationen Verwendung finden. Die gezeigten und beschriebenen Ausführungsformen sind nicht als abschließende Aufzählung zu verstehen, sondern haben vielmehr beispielhaften Charakter für die Schilderung der Erfindung.Advantageous embodiments of the invention are the subject of the dependent claims. Further advantages of the invention will become apparent from the description and the drawings. Likewise, the features mentioned above and the features listed further can be used individually or in combination in any combination. The embodiments shown and described are not to be understood as exhaustive enumeration, but rather have exemplary character for the description of the invention.

Es zeigen:

Fig. 1
den erfindungsgemäßen Schalter mit selbstjustierender Schaltstößelführung in einer perspektivischen Ansicht;
Fig. 2
die Draufsicht auf den Schalter von Fg. 1;
Fig. 3
eine Detailansicht gemäß III in Fig. 2;
Fig. 4
eine modifizierte Schaltstößelführung in einer Detailansicht analog zu Fig. 3;
Fig. 5
eine weitere modifizierte Schaltstößelführung in einer Detailansicht analog zu Fig. 3;
Fig. 6
eine weitere modifizierte Schaltstößelführung in einer Detailansicht analog zu Fig. 3;
Fig. 7
eine weitere Ausführungsform des erfindungsgemäßen Schalters in einer Draufsicht analog zu Fig. 2; und
Fig. 8a, 8b
den in Fig. 1 gezeigten erfindungsgemäßen Schalter mit zwei Federbügeln in einer perspektivischen Ansicht (Fig. 8a) und in einer Seitenansicht des Schaltstößels (Fig. 8b).
Show it:
Fig. 1
the switch according to the invention with self-adjusting switch plunger guide in a perspective view;
Fig. 2
the top view of the switch of FIG. 1;
Fig. 3
a detailed view according to III in Fig. 2 ;
Fig. 4
a modified switch rod guide in a detailed view analogous to Fig. 3 ;
Fig. 5
another modified Schaltstößelführung in a detailed view analogous to Fig. 3 ;
Fig. 6
another modified Schaltstößelführung in a detailed view analogous to Fig. 3 ;
Fig. 7
a further embodiment of the switch according to the invention in a plan view analogous to Fig. 2 ; and
Fig. 8a, 8b
the in Fig. 1 shown switch according to the invention with two spring clips in a perspective view ( Fig. 8a ) and in a side view of the switch plunger ( Fig. 8b ).

Der in Fign. 1 und 2 gezeigte Schalter (Tastschalter) 1 ist beispielsweise in einer Dachbedieneinheit am Dachhimmel eines Fahrzeugs angeordnet und dient zum Ein-und Ausschalten einer Innenbeleuchtung, wie z.B. einer Leseleuchte. Der Schalter 1 umfasst als Handhabe einen im Querschnitt rechteckigen Schaltstößel 2, der an drei Seiten jeweils über eine Linearführung (Stößelführung) 3 in einer Gehäuseöffnung 4 des Schaltergehäuses 5 gegen die Wirkung einer Rückstellkraft verschiebbar in Richtung des Doppelpfeils 6 geführt ist und mit einem elektrischen Schaltkontakt (nicht gezeigt) zusammenwirkt. Die Rückstellkraft kann beispielsweise durch eine Druckfeder (nicht gezeigt) gebildet sein, die zwischen Schaltstößel 2 und Schaltergehäuse 5 wirkt. Der Schaltstößel 2 und das Schaltergehäuse 5 sind vorzugsweise Kunststoffteile, wobei eines der beiden Teile aus Polyoxymethylen (POM), (POM-PTFE), (PC-PTFE) und das andere Teil aus einem PC-ABS-Kunststoff (Polycarbonat-ABS-Blend) gebildet, sowie sämtliche anderen Materialkombinationen, sein können.The in FIGS. 1 and 2 shown switch (push button) 1 is arranged for example in a roof control unit on the headliner of a vehicle and is used to turn on and off an interior lighting, such as a reading light. The switch 1 comprises as a handle a rectangular in cross section switch plunger 2 , which is guided on three sides in each case via a linear guide (plunger guide) 3 in a housing opening 4 of the switch housing 5 against the action of a restoring force displaceable in the direction of the double arrow 6 and with an electrical switch contact (not shown) cooperates. The restoring force can be formed, for example, by a compression spring (not shown), which acts between the switch plunger 2 and the switch housing 5. The switch plunger 2 and the switch housing 5 are preferably plastic parts, wherein one of the two parts of polyoxymethylene (POM), (POM-PTFE), (PC-PTFE) and the other part of a PC-ABS plastic (polycarbonate ABS blend ), as well as all other material combinations, can be.

Wie in Fig. 3 im Detail gezeigt ist, sind die Linearführungen 3 jeweils durch eine Führungsnut 7 des Schaltergehäuses 5 und einen darin geführten Führungsvorsprung 8 des Schaltstößels 2 gebildet. Die beiden einander gegenüberliegenden seitlichen Nutflanken 9 der Führungsnut 7 sind zum Nutgrund 10 hin nach innen gekrümmt und können wie im gezeigten Ausführungsbeispiel viertelkreisförmig ausgebildet sein, um so eine insgesamt halbkreisförmige Führungsnut 7 auszubilden. Der nach außen vorstehende Führungsvorsprung 8 des Schaltstößels 2 weist einen rechteckigen Querschnitt auf und liegt daher nur mit seinen beiden Kanten 11 an den beiden gekrümmten Nutflanken 9 an. Die Kanten 11 1 sind mit einem Radius kleiner als der Radius der Nutflanken 9 abgerundet, so dass zwischen den Nutflanken 9 und den Kanten 11 jeweils nur eine Linienberührung auftritt. In den Linearführungen 3 ist so der Schaltstößel 2 auf seiner gesamten Führungslänge im Schaltergehäuse 5 selbstzentrierend bzw. selbstjustierend geführt und daher exakt parallel zu den Führungsnuten 7, d.h. in der Verschieberichtung 6, ausgerichtet. Diese selbstzentrierende Führung des Schaltstößels 2 verhindert das Verkippen und damit das Verklemmen des Schaltstößels 2, also einen ,,Tastenklemmer", in den Linearführungen 3.As in Fig. 3 is shown in detail, the linear guides 3 are each formed by a guide groove 7 of the switch housing 5 and guided therein a guide projection 8 of the switch plunger 2. The two mutually opposite lateral groove flanks 9 of the guide groove 7 are curved inwardly towards the groove base 10 and, as in the exemplary embodiment shown, may be quarter-circle-shaped so as to form an overall semicircular guide groove 7. The outwardly projecting guide projection 8 of the switch plunger 2 has a rectangular cross section and is therefore only with its two edges 11 at the two curved groove flanks 9. The edges 11 1 are rounded with a radius smaller than the radius of the groove flanks 9, so that between the groove flanks 9 and the edges 11 only one line contact occurs. In the linear guides 3 so the switching plunger 2 is self-centering or self-aligned over its entire guide length in the switch housing 5 and therefore exactly parallel to the guide grooves 7, ie in the direction of displacement 6, aligned. This self-centering guide of the switch plunger 2 prevents the tilting and thus the jamming of the switch plunger 2, so a "key clamp" in the linear guides. 3

Wie in Fig. 2 weiter gezeigt ist, weist der Schaltstößel 2 auch an seiner vierten Seite einen Führungsvorsprung 8 auf, der aber im Schaltergehäuse 5 nicht geführt ist, da ansonsten die Führung des Schaltstößels 2 überbestimmt wäre. Dieser vierte Führungsvorsprung 8 greift daher mit allseitigem Spiel in eine Aufnahmenut 12 des Schaltergehäuses 5 ein, ohne darin geführt zu werden. Aufgrund seiner vier Führungsvorsprünge 8 kann der gleiche Schaltstößel 2 universell in verschiedene Gehäuseöffnungen 4 eingesetzt werden, bei denen die Aufnahmenut 12 an unterschiedlichen Seiten der Gehäuseöffnung 4 vorgesehen ist.As in Fig. 2 is further shown, the switching plunger 2 on its fourth side on a guide projection 8, which is not performed in the switch housing 5, since otherwise the leadership of the switching plunger 2 would be overdetermined. This fourth guide projection 8 therefore engages with all-round play in a receiving groove 12 of the switch housing 5, without being guided therein. Due to its four guide projections 8, the same switching plunger 2 can be used universally in different housing openings 4, in which the receiving groove 12 is provided on different sides of the housing opening 4.

Im Gegensatz zu der Stößelführung der Fig. 3, bei der die Führungsvorsprünge 8 massiv ausgebildet sind, sind bei der in Fig. 4 gezeigten Stößelführung 3 die Führungsvorsprünge 8 innen mit einem Hohlraum 13 ausgebildet und dadurch nach innen leicht federnd. Diese federnden Führungsvorsprünge 8 unterstützen die Selbstjustierung des Schaltstößels 2 in den Stößelführungen 3. Das Führungsspiel zwischen dem Schaltstößel 2 und dem Schaltergehäuse 5 kann von vorneherein enger gewählt werden, oder es können größere Toleranzen zugelassen werden. Denn bevor der Schaltstößel 2 in den Stößelführungen 3 klemmt, federt der Führungsvorsprung 8 entsprechend zurück.In contrast to the ram guide the Fig. 3 in which the guide projections 8 are solid, are in the in Fig. 4 shown plunger guide 3, the guide projections 8 formed inside with a cavity 13 and thereby resiliently inwardly slightly. These resilient guide projections 8 support the self-adjustment of the switch plunger 2 in the plunger guides 3. The guide clearance between the switch plunger 2 and the switch housing 5 can be selected from the outset narrower, or it can be tolerated larger tolerances. Because before the switch plunger 2 jams in the plunger guides 3, the guide projection 8 springs back accordingly.

Fig. 5 zeigt eine weitere Stößelführung 3, bei der der Führungsvorsprung 8 zwischen seinen beiden Kanten 11 eine zum Nutgrund 10 hin offene Aussparung (Trennfuge) 14 aufweist, welche sich über die gesamte Tiefe des Führungsvorsprungs 8 erstreckt. Dadurch sind die zu beiden Seiten der Aussparung 8 befindlichen zwei Seitenwände 15 des Führungsvorsprungs 8 an ihren freien Enden und damit auch die dort vorgesehenen Kanten 11 in Querrichtung 16 federnd ausgebildet, wodurch ein möglichst geringes Führungsspiel ermöglicht und größere Toleranzen zugelassen werden können. Denn bevor der Schaltstößel 2 in den Stößelführungen 3 klemmt, federn die beiden Seitenwände 15 mit ihren Kanten 11 in Querrichtung 16 entsprechend zurück. Fig. 5 shows a further tappet guide 3, wherein the guide projection 8 between its two edges 11 has a groove bottom 10 toward open recess (parting line) 14 which extends over the entire depth of the guide projection 8. As a result, located on both sides of the recess 8 two side walls 15 of the guide projection 8 at their free ends and thus also the there provided edges 11 in the transverse direction 16 resiliently formed, whereby the smallest possible guide clearance allows and larger tolerances can be allowed. Because before the switch plunger 2 jams in the plunger guides 3, the two side walls 15 feather with their edges 11 in the transverse direction 16 back accordingly.

Fig. 6 zeigt schließlich eine noch weitere Stößelführung 3, bei der die einander zugewandten Nutflanken 9 zum Nutgrund 10 hin V-förmig aufeinander zulaufen. In dieser V-förmigen Führungsnut 7 wird der Führungsvorsprung 8 selbstzentrierend bzw. selbstjustierend geführt, wodurch das Verkippen und damit das Verklemmen des Schaltstößels 2 in den Linearführungen 3 verhindert werden. Fig. 6 Finally, shows a still further plunger guide 3, in which the mutually facing groove flanks 9 to the groove bottom 10 towards V-shaped converge. In this V-shaped guide groove 7, the guide projection 8 is guided self-centering or self-adjusting, whereby the tilting and thus the jamming of the switching plunger 2 in the linear guides 3 are prevented.

Von dem in den Fign. 1 bis 3 gezeigten Schalter unterscheidet sich der in Fig. 7 gezeigte Schalter 1 lediglich dadurch, dass hier genau umgekehrt die drei Linearführungen 3 jeweils durch eine Führungsnut 7 des Schaltstößels 2 und einen darin geführten Führungsvorsprung 8 des Schaltergehäuses 5 gebildet sind. Der Schaltstößel 2 weist auch an seiner vierten Seite eine Führungsnut 7 auf, während das Schaltergehäuse 5 auf dieser Seite keinen Führungsvorsprung aufweist.From that in the FIGS. 1 to 3 The switch shown differs in Fig. 7 shown switch 1 only in that here exactly the other way around the three linear guides 3 are each formed by a guide groove 7 of the switch plunger 2 and guided therein a guide projection 8 of the switch housing 5. The switch plunger 2 also has on its fourth side a guide groove 7, while the switch housing 5 has no guide projection on this side.

Wie in den Fign. 8a, 8b gezeigt, kann die Rückstellkraft des Schaltstößels 2 auch durch zwei Bügelfedern 17 gebildet sein, die an zwei einander gegenüberliegenden Seiten zwischen Schaltstößel 2 und Schaltergehäuse 5 verliersicher aufgenommen sind. Die Bügelfedern 17 sind mit ihren beiden Bügelenden 18 an der Außenseite des Schaltergehäuses 5 abgestützt und umgreifen mit ihrem mittleren Bügelabschnitt 19 den Führungsvorsprung 8 von unten. Beim Betätigen des Schaltstößels 2 wird der mittlere Bügelabschnitt 18 durch den Führungsvorsprung 8 des Schaltstößels 2 gegenüber den beiden Bügelenden 18 ausgelenkt, wodurch der Schaltstößel 2 zurück in seine Ausgangslage gespannt wird. Wie in Fig. 8a gestrichelt angedeutet, können die beiden Bügelfedern 17 auch miteinander verbunden sein, also einteilig durch eine einzige Bügelfeder gebildet sein, wodurch das Handling beim Einbau verbessert und vereinfacht wird.As in the FIGS. 8a, 8b shown, the restoring force of the switch plunger 2 may also be formed by two bow springs 17 , which are taken captively on two opposite sides between the switch plunger 2 and the switch housing 5. The bow springs 17 are supported with their two strap ends 18 on the outside of the switch housing 5 and embrace with their central bracket portion 19, the guide projection 8 from below. When operating the switch plunger 2, the middle bracket portion 18 is deflected by the guide projection 8 of the switch plunger 2 relative to the two strap ends 18, whereby the switch plunger 2 is stretched back to its original position. As in Fig. 8a indicated by dashed lines, the two bow springs 17 may also be interconnected, so be formed integrally by a single bow spring, whereby the handling during installation is improved and simplified.

Gegenüber Druckfedern bietet die Bügelfeder 17 zudem folgende Vorteile:

  • Verschiedene Geometrien im Federquerschnitt (rund, rechteckig, dreieckig .... oval) sind möglich.
  • Quietschgeräusche innerhalb der Feder werden eliminiert.
  • Die Bügelfeder 17 kann über ihre Länge leicht auf unterschiedlich breite Schaltstößel 2 angepasst werden.
  • Aufgrund der spiegelsymmetrisch angeordneten Bügelfedern 17 ergibt sich eine symmetrische Stößelrückstellung, wodurch der Schaltstößel 2 nicht verkantet.
Compared to compression springs, the bow spring 17 also offers the following advantages:
  • Different geometries in the spring cross-section (round, rectangular, triangular .... oval) are possible.
  • Squeaking noises within the spring are eliminated.
  • The bow spring 17 can be easily adjusted over its length to different width switching plunger 2.
  • Due to the mirror-symmetrically arranged bow springs 17 results in a symmetrical plunger reset, whereby the switch plunger 2 is not tilted.

Claims (13)

Schalter (1), insbesondere für eine Dachbedieneinheit eines Fahrzeugs, mit einem Schaltstößel (2), der an mindestens drei Seiten jeweils über eine Linearführung (3) in einer Gehäuseöffnung (4) des Schalfiergehäuses (5) verschiebbar geführt ist, wobei die Linearführungen (3) jeweils durch eine Führungsnut (7) des einen Teils (5) und einen darin geführten Führungsvorsprung (8) des anderen Teils (2) gebildet sind,
dadurch gekennzeichnet,
dass die beiden einander gegenüberliegenden Nutflanken (9) der Führungsnut (7) zum Nutgrund (10) hin nach innen gekrümmt sind oder V-förmig aufeinander zulaufen und dass der Führungsvorsprung (8) jeweils nur mit einer Kante (11) an den beiden Nutflanken (8) anliegt.Switch (1), in particular for a roof control unit of a vehicle, with a switch plunger (2) which is displaceably guided on at least three sides via a linear guide (3) in a housing opening (4) of the Schalfiergehäuses (5), wherein the linear guides ( 3) are each formed by a guide groove (7) of one part (5) and a guided therein guide projection (8) of the other part (2),
characterized,
in that the two mutually opposing groove flanks (9) of the guide groove (7) are curved inwards towards the groove base (10) or converge towards one another in a V-shaped manner and that the guide projection (8) only has one edge (11) on the two groove flanks ( 8) is applied. Schalter nach Anspruch 1, dadurch gekennzeichnet, dass die beiden Nutflanken (9) jeweils teilkreisförmig, insbesondere viertelkreisförmig, ausgebildet sind.Switch according to claim 1, characterized in that the two groove flanks (9) are each part-circular, in particular quarter-circle, are formed. Schalter nach Anspruch 1 oder 2 einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Kanten (11) des Führungsvorsprungs (8) abgerundet sind.Switch according to claim 1 or 2 one of the preceding claims, characterized in that the edges (11) of the guide projection (8) are rounded. Schalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Führungsvorsprung (8) massiv ausgebildet ist.Switch according to one of the preceding claims, characterized in that the guide projection (8) is solid. Schalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Führungsvorsprung (8) federnd ausgebildet ist.Switch according to one of the preceding claims, characterized in that the guide projection (8) is resilient. Schalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Führungsvorsprung (8) innen hohl ist.Switch according to one of the preceding claims, characterized in that the guide projection (8) is hollow inside. Schalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Führungsvorsprung (8) zwischen seinen beiden Kanten (11) eine zum Nutgrund (10) hin offene Aussparung (14) aufweist.Switch according to one of the preceding claims, characterized in that the guide projection (8) between its two edges (11) has a recess (14) open towards the groove base (10). Schalter nach Anspruch 7, dadurch gekennzeichnet, dass sich die Aussparung (14) über die gesamte Tiefe des Führungsvorsprungs (8) erstreckt.Switch according to claim 7, characterized in that the recess (14) extends over the entire depth of the guide projection (8). Schalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schaltstößel (2) auch an seiner vierten Seite einen Führungsvorsprung (8) oder eine Führungsnut (7) aufweist.Switch according to one of the preceding claims, characterized in that the switching plunger (2) also on its fourth side a guide projection (8) or a guide groove (7). Schalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Schaltergehäuse (5) an der vierten Seite der Gehäuseöffnung (4) eine Aufnahmenut (12) aufweist, in die ein Führungsvorsprung (8) des Schaltstößels (2) mit allseitigem Spiel eingreift.Switch according to one of the preceding claims, characterized in that the switch housing (5) on the fourth side of the housing opening (4) has a receiving groove (12) into which a guide projection (8) of the switching plunger (2) engages with all-round play. Schalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Schaltergehäuse (5) aus Polyoxymethylen (POM) und der Schaltstößel (2) aus einem PC-ABS-Kunststoff (Polycarbonat-ABS-Blend) oder sonstigen tribologisch günstigen Kunststoff Kombinationen gebildet sind, oder umgekehrt.Switch according to one of the preceding claims, characterized in that the switch housing (5) made of polyoxymethylene (POM) and the switching plunger (2) of a PC-ABS plastic (polycarbonate ABS blend) or other tribologically favorable plastic combinations are formed, or the other way around. Schalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schaltstößel (2) gegen die Rückstellkraft mindestens einer Feder (17) verschiebbar geführt ist.Switch according to one of the preceding claims, characterized in that the switching plunger (2) against the restoring force of at least one spring (17) is displaceably guided. Schalter nach Anspruch 12, dadurch gekennzeichnet, dass die Feder (17) als Bügelfeder ausgebildet ist, die mit ihren beiden Bügelenden (18) am Schaltergehäuse (5) abgestützt ist und mit einem mittleren Bügelabschnitt (19) den Führungsvorsprung (8) umgreift.Switch according to claim 12, characterized in that the spring (17) is designed as a bow spring, which is supported with its two strap ends (18) on the switch housing (5) and with a central bracket portion (19) engages around the guide projection (8).
EP11166342.3A 2010-06-02 2011-05-17 Switch with self-adjusting switch plunger guide Active EP2393097B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010029642 DE102010029642B3 (en) 2010-06-02 2010-06-02 Switch with self-adjusting switch ram guide

Publications (2)

Publication Number Publication Date
EP2393097A1 true EP2393097A1 (en) 2011-12-07
EP2393097B1 EP2393097B1 (en) 2015-11-25

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ID=44533306

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EP (1) EP2393097B1 (en)
DE (1) DE102010029642B3 (en)
ES (1) ES2556977T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014005123A1 (en) * 2014-04-08 2015-10-08 Leopold Kostal Gmbh & Co. Kg Electric pushbutton and control with an electric pushbutton
DE102014110229B4 (en) * 2014-07-21 2023-09-28 Bcs Automotive Interface Solutions Gmbh Push button for an electrical device in a vehicle and push button unit with such a push button
DE102019217628A1 (en) * 2019-11-15 2021-05-20 Zf Friedrichshafen Ag Key guide arrangement
DE102021100569A1 (en) 2021-01-13 2022-07-14 Bcs Automotive Interface Solutions Gmbh push button assembly

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US5670759A (en) * 1995-07-14 1997-09-23 Acer Peripherals, Inc. Push button switch including complementary housing and actuator polygonal shapes
JP2005259587A (en) * 2004-03-12 2005-09-22 Alps Electric Co Ltd Push switch
JP2006066102A (en) * 2004-08-24 2006-03-09 Fujikura Ltd Push switch
JP2008198521A (en) * 2007-02-14 2008-08-28 Denso Corp In-car operating device

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Publication number Priority date Publication date Assignee Title
DE8634325U1 (en) * 1986-12-22 1989-10-26 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co KG, 8510 Fürth Device for guiding push buttons
JP2008234934A (en) * 2007-03-19 2008-10-02 Tokai Rika Co Ltd Switch device

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Publication number Priority date Publication date Assignee Title
US5670759A (en) * 1995-07-14 1997-09-23 Acer Peripherals, Inc. Push button switch including complementary housing and actuator polygonal shapes
JP2005259587A (en) * 2004-03-12 2005-09-22 Alps Electric Co Ltd Push switch
JP2006066102A (en) * 2004-08-24 2006-03-09 Fujikura Ltd Push switch
JP2008198521A (en) * 2007-02-14 2008-08-28 Denso Corp In-car operating device

Also Published As

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DE102010029642B3 (en) 2011-09-29
ES2556977T3 (en) 2016-01-21
EP2393097B1 (en) 2015-11-25

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