EP1750291B1 - Microswitch - Google Patents
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- EP1750291B1 EP1750291B1 EP06013557A EP06013557A EP1750291B1 EP 1750291 B1 EP1750291 B1 EP 1750291B1 EP 06013557 A EP06013557 A EP 06013557A EP 06013557 A EP06013557 A EP 06013557A EP 1750291 B1 EP1750291 B1 EP 1750291B1
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- EP
- European Patent Office
- Prior art keywords
- housing
- microswitch
- plate
- spring element
- accordance
- 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.)
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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
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs
Definitions
- the invention relates to a micro switch, consisting of a housing, at least two conductor tracks arranged in the housing and from a spring element supported on the housing, which is lifted in the unactuated state of at least one conductor track, which is movable in the direction of the conductor tracks and through the when pressing the tracks for generating an electrical contact with each other are connected.
- a so-called snap disc switch removable, which has a domed snap disc, which is supported by a plurality of support elements on a base member.
- a separating element is provided, by which the distance of the support elements is increased from the base element.
- the spring element is also known to form the spring element as a truncated cone in order to absorb the occurring stresses that occur when moving the spring element, in particular in its edge region.
- snap-action switch A disadvantage of such snap-action switch has been found that caused by the movement of the snap-action disc in the edge region of the operating field stress cracks, which cause the life of such snap-action switch is limited.
- the known snap disk switch build extremely large, so that they can not be used as a micro-switch, for example, by the DE 198 16 956 C1 revealed Snap disc switch has a separator to increase the stroke of the snap-action switch. The larger, however, the separating element is formed, the larger the outer contour of the entire snap disk switch assembly.
- EP-A-0 926 618 discloses a microswitch according to the preamble of claim 1.
- the invention has the object, a micro-switch of the aforementioned type to design such that it has an increased life compared to a microswitch of the same size; the same time should take the smallest possible size.
- This micro-switch should also have the largest possible lifting or switching path.
- the spring element is designed as a plate whose area is formed around the center of mass as lifted from the tracks switching cup, that the switching cupola is movable by the plane formed by the plate and that on the plate at least two opposing projections are provided which protrude laterally from this and which extend in the plane formed by the plate.
- the spring element has a material property that allows the switching dome to be moved through the plane formed by the plate when actuated so that the stroke traveled by the dome is increased.
- a support base is in each case formed on the underside of the plate, preferably in the corner regions, which rests on the housing or on outside running tracks. Due to the significantly increased distance between the inside of the switching dome and the inner conductor track an accidental short circuit is avoided. Rather, it is ensured that only the microswitch is activated by the actuation of the switching dome.
- an actuating element which is fixed to the housing, is provided.
- the actuating element is designed as a ball and is held in a lid. As a result, a positionally accurate activation or actuation of the spring element is ensured.
- the sealing jacket can be held clamped between the cover and the housing so that the sealing jacket acts in the manner of a diaphragm when the actuating switch is actuated.
- the sealing jacket can also be designed such that it engages over the housing, for example as a two-component construction part.
- the middle conductor In order to avoid an unintended short circuit between the switching dome and the middle conductor, it may be provided to arrange the middle conductor in a level lower level in the housing than the two outer parallel thereto extending conductor tracks, so that the distance between the switching dome and the middle conductor this structural measure is increased.
- FIG. 1 is a microswitch 1 can be seen, through which an electrical switching operation can be made.
- the microswitch 1 can be operated manually or mechanically.
- the microswitch 1 consists of a housing 2, in which three mutually parallel conductor tracks 3 are accommodated. At both opposite end sides of the housing 2, a slot or pads for SMO or variant for THT are provided for each of the three interconnects 3, so that on the housing 2 either one-sided or two-sided connection options are created.
- a circumferential web 5 is formed in its edge region, so that the web 5 forms a space.
- a spring element 11 which is formed as a plate 12, used.
- FIGS. 3a and 3b can be taken from the exact design of the spring element 11.
- the plate 12 has two axes of symmetry 16 and 17 which intersect at the center of symmetry 18 of the spring element 11.
- annular switching dome 13 is formed, which is elastically connected to the plate 12.
- the switching dome 13 protrudes from the plane formed by the plate 12 and can be moved by a force directed toward this through the plane formed by the plate 12.
- each a pedestal 14 are provided on this in the four corner regions.
- the plate 12, which formed on this molded switching dome 13 and the four pedestal 14 thus form the spring element eleventh
- FIG. 3b It is shown that two opposite projections 19 are attached to the plate 12, which extend laterally in the plane formed by the plate 12.
- the projections 19 serve to absorb the resulting during actuation of the switching cup 13 voltages in the transition region between the switching cup 13 and the plate 12 in order to increase the life of the spring element 11 in total, as by these the switching operations for the microswitch 1 can be accommodated without Stress cracks occur by which the switching dome 13 would be separated from the plate 12.
- FIGS. 2a and 2b it is shown how the spring element 11 is housed in the housing 2.
- the edge region of the plate 12 abuts against the inside of the web 5 of the housing 2.
- the inner contour of the web 5 therefore corresponds to the outer contour of the plate 12, so that the plate 12 is held by the web 5 in the horizontal directions.
- an actuating element 21 is attached to the housing.
- the actuating element 21 is spherical in its cross section.
- a sealing jacket 23 is integrally formed on the actuating element 21, the free end resting on the upper side of the web 5.
- two oppositely extending locking lugs 24 are formed, over which a lid 22 can be pressed with a snap projection 25.
- the locking lugs 24 act as undercuts and fix the snap projection 25.
- the cover 22 completely surrounds the sealing jacket 23, whereby the actuating element 21 is locked on the housing 2.
- the cover 22 may be designed such that it is connected to the sealing jacket 23 by a suitable manufacturing process.
- the three interconnects 3 extend in a common switching level in the housing 2.
- the pedestals 14 of the spring element 11 rest on the two outer interconnects 3.
- the switching dome 13 snaps back into its starting position in the manner of a spring. As a result, the switching operation is terminated and the actuating element 21 is lifted by the switching dome 13.
- the attached to the actuator 21 sealing jacket 23 serves to protect the spring element 11 and the three interconnects 3 from dirt ingress.
- the actuating element 21 is fixed by the sealing jacket 23 between the cover 22 and the upper side of the web 5 on the housing 2.
- the middle conductor 3 is lowered relative to the two outer two conductors 3 arranged in the housing 2, so that the distance between the inside of the switching dome 13, so the middle conductor 3 facing side of the switching dome 13 is generated a greater distance than in the embodiment of the FIGS. 2a to 2d , A greater distance between the inside of the switching dome 13 and the middle conductor 3 increases the security and unwanted switching operations of the microswitch 1 are prevented.
- the spring element 11 can be fixed without the actuating element 21 in the housing 2.
- the four corner regions of the housing 2 are impressed in the direction of the spring element 11, so that the spring element 11 is held floatingly mounted in the housing 2 by the embossments thus produced.
- the actuation of the switching dome 13 can be done by a user's finger or a thin pin.
- the actuating element 21 is formed as a ball, without that a sealing jacket 23 is formed on this.
- the trained as a ball actuator 21 is exclusively held rotatably in the cover 22 on the housing 2.
- the outer contour of the lid 22 therefore protrudes beyond the median plane of the actuating element 21, so that falling out of the actuating element 21 from the lid 22 is prevented due to the enlarged subsequent diameter of the actuating element 21.
- the actuating element 21 is formed in all embodiments as a ball and the switching dome 13 has a dome-shaped outer contour, which is bent away from the actuating element 21, it is ensured that the summit of the switching cup 13, which is located exactly in the center 18, in the direction is moved to the middle conductor 3.
- the actuator 21 is namely exclusively with the highest elevation of the switching dome 13 come into operative connection, so that a lateral actuation of the switching dome 13 can be excluded.
- the two projections 19 extend in the lateral region, in which considerable stresses arise due to the actuation of the switching dome 13, these are introduced uniformly into the plate 12. It is therefore particularly advantageous if the radius occupied by the switching dome 13 around the center 18 is used as the starting basis for the outer contours of the two projections 19. Namely, the outer contours of the projections 19 are intended to run in a circle around the center point 18.
- the radius of the projections 19 should be 10% to 50% greater than the radius of the switching dome 13 about the center of the 18th
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Abstract
Description
Die Erfindung bezieht sich auf einen Mikroschalter, bestehend aus einem Gehäuse, aus mindestens zwei im Gehäuse angeordneten Leiterbahnen und aus einem an dem Gehäuse abgestützten Federelement, das im unbetätigten Zustand von mindestens einer Leiterbahn abgehoben ist, das in Richtung der Leiterbahnen bewegbar ist und durch das beim Betätigen die Leiterbahnen zur Erzeugung eines elektrischen Kontaktes miteinander verbindbar sind.The invention relates to a micro switch, consisting of a housing, at least two conductor tracks arranged in the housing and from a spring element supported on the housing, which is lifted in the unactuated state of at least one conductor track, which is movable in the direction of the conductor tracks and through the when pressing the tracks for generating an electrical contact with each other are connected.
Der
Es ist auch bekannt, das Federelement als Kegelstumpf auszubilden, um die auftretenden Spannungen, die beim Bewegen des Federelementes, insbesondere in dessen Randbereich auftreten, aufzunehmen.It is also known to form the spring element as a truncated cone in order to absorb the occurring stresses that occur when moving the spring element, in particular in its edge region.
Als nachteilig bei solchen Schnappscheibenschalter hat sich herausgestellt, dass durch das Bewegen der Schnappscheibe im Randbereich des Betätigungsfeldes Spannungsrisse entstehen, die dazu führen, dass die Lebensdauer solcher Schnappschalter beschränkt ist. Darüber hinaus bauen die bekannten Schnappscheibenschalter äußerst groß, so dass diese nicht als Mikroschalter eingesetzt werden können, denn beispielsweise der durch die
Dokument
Ausgehend von den bekannten Schnappscheibenschalter liegt der Erfindung die Aufgabe zugrunde, einen Mikroschalter der vorbezeichneten Gattung derart auszugestalten, dass dieser eine erhöhte Lebensdauer gegenüber einem Mikroschalter gleicher Baugröße aufweist; der gleichzeitig einen möglichst gering bemessenen Umfang einnehmen soll. Dieser Mikroschalter soll zudem einen möglichst groß bemessenen Hub- bzw. Schaltweg aufweisen.Based on the known snap disk switch, the invention has the object, a micro-switch of the aforementioned type to design such that it has an increased life compared to a microswitch of the same size; the same time should take the smallest possible size. This micro-switch should also have the largest possible lifting or switching path.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass das Federelement als Platte ausgebildet ist, dessen Bereich um den Massenmittelpunkt als von den Leiterbahnen abgehobene Schaltkuppel ausgebildet ist, dass die Schaltkuppel durch die von der Platte gebildete Ebene bewegbar ist und dass an der Platte mindestens zwei gegenüberliegende Anformungen vorgesehen sind, die von dieser seitlich abstehen und die in der von der Platte gebildeten Ebene verlaufen.This object is achieved in that the spring element is designed as a plate whose area is formed around the center of mass as lifted from the tracks switching cup, that the switching cupola is movable by the plane formed by the plate and that on the plate at least two opposing projections are provided which protrude laterally from this and which extend in the plane formed by the plate.
Es ist besonders vorteilhaft, wenn an dem als Platte ausgebildeten Federelement mindestens zwei gegenüberliegende Anformungen vorgesehen sind, denn dadurch werden die durch das Bewegen der Schaltkuppel auftretenden Spannungen durch die Anformungen aufgenommen und an das Gehäuse weitergeleitet. Insbesondere im Übergangsbereich zwischen der Schaltkuppel und der Platte entstehen durch die Bewegung der Schaltkuppel in der Platte Spannungen, die zu Beschädigungen der Verbindung zwischen der Schaltkuppel und der Platte führen. Durch die Anformungen wird demnach die Lebensdauer des Mikroschalters gesteigert.It is particularly advantageous if at least two opposing projections are provided on the spring element formed as a plate, because thereby the voltages occurring due to the movement of the switching dome are absorbed by the projections and forwarded to the housing. In particular, in the transition region between the switching dome and the plate caused by the movement of the switching dome in the plate voltages that cause damage to the connection between the switching dome and the plate. The moldings therefore increase the service life of the microswitch.
Das Federelement weist eine Materialeigenschaft auf, die es ermöglicht, dass die Schaltkuppel beim Betätigen durch die von der Platte gebildeten Ebene hindurchbewegt werden kann, so dass der von der Schaltkuppel zurückgelegte Hubweg erhöht ist.The spring element has a material property that allows the switching dome to be moved through the plane formed by the plate when actuated so that the stroke traveled by the dome is increased.
Um eine weitere Abstandsvergrößerung zwischen der Innenseite der Schaltkuppel und einer unterhalb der Schaltkuppel verlaufenden Leiterbahn zu erzielen, ist an der Unterseite der Platte, vorzugsweise in deren Eckbereichen, jeweils ein Auflagesockel angeformt, der auf dem Gehäuse oder auf außen verlaufenden Leiterbahnen aufliegt. Aufgrund des erheblich vergrößerten Abstandes zwischen der Innenseite der Schaltkuppel und der innen verlaufenden Leiterbahn wird ein unbeabsichtigter Kurzschluss vermieden.
Vielmehr wird gewährleistet, dass durch das Betätigen der Schaltkuppel ausschließlich der Mikroschalter aktiviert wird.In order to achieve a further increase in distance between the inside of the switching dome and a running below the switching dome trace, a support base is in each case formed on the underside of the plate, preferably in the corner regions, which rests on the housing or on outside running tracks. Due to the significantly increased distance between the inside of the switching dome and the inner conductor track an accidental short circuit is avoided.
Rather, it is ensured that only the microswitch is activated by the actuation of the switching dome.
Um die Betätigung des Federelementes von außen zu erleichtern, ist ein Betätigungselement, das an dem Gehäuse fixiert ist, vorgesehen. Das Betätigungselement ist als Kugel ausgebildet und wird in einem Deckel gehalten. Dadurch wird eine positionsgenaue Aktivierung bzw. Betätigung des Federelementes sichergestellt.In order to facilitate the operation of the spring element from the outside, an actuating element which is fixed to the housing, is provided. The actuating element is designed as a ball and is held in a lid. As a result, a positionally accurate activation or actuation of the spring element is ensured.
Es ist besonders zweckmäßig, wenn an der Kugel ein umlaufender Dichtungsmantel vorgesehen ist, durch den der Zwischenraum zwischen der Kugel und dem Deckel verschlossen ist. Folglich können Schmutz- und Staubpartikel durch den Dichtungsmantel vor dem Eindringen in das Innere des Gehäuses des Mikroschalters abgehalten werden.It is particularly useful if a circumferential sealing jacket is provided on the ball, through which the gap between the ball and the lid is closed. Consequently, dirt and dust particles can be prevented by the sealing jacket from penetrating into the interior of the housing of the microswitch.
Der Dichtungsmantel kann zwischen dem Deckel und dem Gehäuse verspannt gehalten werden, so dass der Dichtungsmantel nach Art einer Membrane beim Betätigen des Betätigungsschalters wirkt. Der Dichtungsmantel kann auch so ausgebildet sein, dass er über das Gehäuse rastet, zum Beispiel als Zwei-Komponenten-Bau-Teil.The sealing jacket can be held clamped between the cover and the housing so that the sealing jacket acts in the manner of a diaphragm when the actuating switch is actuated. The sealing jacket can also be designed such that it engages over the housing, for example as a two-component construction part.
Um einen unbeabsichtigten Kurzschluss zwischen der Schaltkuppel und der mittleren Leiterbahn zu vermeiden, kann vorgesehen sein, die mittlere Leiterbahn in eine niveauniedrigere Ebene im Gehäuse anzuordnen als die beiden äußeren parallel zu dieser verlaufenden Leiterbahnen, so dass der Abstand zwischen der Schaltkuppel und der mittleren Leiterbahn durch diese konstruktive Maßnahme erhöht wird.In order to avoid an unintended short circuit between the switching dome and the middle conductor, it may be provided to arrange the middle conductor in a level lower level in the housing than the two outer parallel thereto extending conductor tracks, so that the distance between the switching dome and the middle conductor this structural measure is increased.
Weitere vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous developments of the invention will become apparent from the dependent claims.
In der Zeichnung sind zwei erfindungsgemäße Ausführungsbeispiele eines Mikroschalters dargestellt, die nachfolgend näher erläutert werden.In the drawing, two embodiments of a micro-switch according to the invention are shown, which are explained in more detail below.
Im einzelnen zeigt:
Figur 1- ein erstes Ausführungsbeispiel eines Mikroschalters, bestehend aus einem Gehäuse und ein in diesem eingebetteten Federelement, das durch ein Betätigungselement in Richtung auf drei Leiterbahnen betätigbar ist, in perspektivischer Ansicht,
- Figur 2a
- den Mikroschalter gemäß
, entlang der Schnittlinie II-II, im unbetätigten Zustand,Figur 1 - Figur 2b
- den Mikroschalter gemäß
entlang der Schnittlinie III-III, im unbetätigten Zustand;Figur 1 - Figur 2c
- den Mikroschalter gemäß
Figur 2a , im betätigten Zustand, - Figur 2d
- den Mikroschalter gemäß
Figur 2b , im betätigten Zustand, - Figur 3a
- das Federelement gemäß
, in Seitenansicht,Figur 1 - Figur 3b
- das Federelement gemäß
, in Draufsicht,Figur 1 - Figur 4a
- ein zweites Ausführungsbeispiel eines Mikroschalters, bestehend aus einem Gehäuse, in dem ein Federelement eingebettet ist und dessen mittlere Leiterbahn gegenüber den beiden äußeren Leiterbahnen in einer niveauniedrigeren Ebene verläuft, im Schnitt,
- Figur 4b
- den Mikroschalter gemäß
Figur 4a in einem gegenüber derFigur 4a um 90 ° gedrehten Schnitt, - Figur 5a
- den Mikroschalter gemäß
und dessen schwimmend gelagertes Federelement, das im Gehäuse durch eine Einprägung gehalten ist, im Schnitt,Figur 1 - Figur 5b
- den Mikroschalter gemäß
Figur 5a in Draufsicht, - Figur 6
- den Mikroschalter gemäß
, in perspektivischer Ansicht und eine Ausführungsvariante für das Betätigungselement ohne Dichtungsmantel, im Schnitt.Figur 1
- FIG. 1
- a first embodiment of a micro-switch, consisting of a housing and a spring element embedded in this, which can be actuated by an actuating element in the direction of three tracks, in a perspective view,
- FIG. 2a
- according to the microswitch
FIG. 1 , along the section line II-II, in the unactuated state, - FIG. 2b
- according to the microswitch
FIG. 1 along the section line III-III, in the unactuated state; - Figure 2c
- according to the microswitch
FIG. 2a , in the actuated state, - Figure 2d
- according to the microswitch
FIG. 2b , in the actuated state, - FIG. 3a
- the spring element according to
FIG. 1 , in side view, - FIG. 3b
- the spring element according to
FIG. 1 , in plan view, - FIG. 4a
- a second embodiment of a microswitch, consisting of a housing in which a spring element is embedded and whose middle conductor runs opposite the two outer conductor tracks in a lower level, in section,
- FIG. 4b
- according to the microswitch
FIG. 4a in one oppositeFIG. 4a rotated by 90 °, - FIG. 5a
- according to the microswitch
FIG. 1 and its floating spring element, which is held in the housing by an impression, in section, - FIG. 5b
- according to the microswitch
FIG. 5a in plan view, - FIG. 6
- according to the microswitch
FIG. 1 , in perspective view and a variant for the actuator without sealing jacket, in section.
Der Mikroschalter 1 besteht aus einem Gehäuse 2, in dem drei parallel zueinander verlaufende Leiterbahnen 3 untergebracht sind. An beiden gegenüberliegenden Stirnseiten des Gehäuses 2 sind für jede der drei Leiterbahnen 3 jeweils ein Steckplatz bzw. Lötflächen für SMO oder Variante für THT vorgesehen, so dass an dem Gehäuse 2 wahlweise einseitig oder beidseitig Anschlussmöglichkeiten geschaffen sind.The
An das Gehäuse 2 ist in dessen Randbereich ein umlaufender Steg 5 angeformt, so dass der Steg 5 einen Raum bildet. In diesen Raum ist ein Federelement 11, das als Platte 12 ausgeformt ist, eingesetzt.To the
Insbesondere den
Um den Mittelpunkt 18 ist eine ringförmige Schaltkuppel 13 ausgeformt, die elastisch mit der Platte 12 verbunden ist. Die Schaltkuppel 13 ragt aus der von der Platte 12 gebildeten Ebene und kann durch eine auf diese ausgerichtete Kraft durch die von der Platte 12 gebildete Ebene verfahren werden.Around the
Auf der von der Schaltkuppel 13 abgewandten Seite der Platte 12 sind an dieser in den vier Eckbereichen jeweils ein Standsockel 14 vorgesehen. Die Platte 12, die an dieser angeformten Schaltkuppel 13 sowie die vier Standsockel 14 bilden demnach das Federelement 11.On the side facing away from the switching
Insbesondere in der
In den
Zur Betätigung des Federelementes 11, insbesondere zur Betätigung der Schaltkuppel 13, ist an dem Gehäuse ein Betätigungselement 21 angebracht. Das Betätigungselement 21 ist in seinem Querschnitt kugelförmig ausgebildet. Im Übergangsbereich zwischen der Außenkontur des Betätigungselementes 21 und dem Gehäuse 2 ist an dem Betätigungselement 21 ein Dichtungsmantel 23 angeformt, dessen freies Ende auf der Oberseite des Steges 5 aufliegen. An die Außenseite des Steges 5 sind zwei gegenüberliegend zueinander verlaufende Rastnasen 24 angeformt, über die ein Deckel 22 mit einem Schnappvorsprung 25 gedrückt werden kann. Die Rastnasen 24 wirken als Hinterschneidungen und fixieren den Schnappvorsprung 25. Der Deckel 22 umgreift den Dichtungsmantel 23 vollständig, wodurch das Betätigungselement 21 am Gehäuse 2 arretiert wird.For actuating the
Der Deckel 22 kann derart gestaltet sein, dass dieser mit dem Dichtungsmantel 23 durch ein geeignetes Fertigungsverfahren verbunden ist.The
Die drei Leiterbahnen 3 verlaufen in einer gemeinsamen Schaltebene im Gehäuse 2. Auf die beiden äußeren Leiterbahnen 3 liegen dabei die Standsockel 14 des Federelementes 11 auf.The three
In den
Wenn die auf das Betätigungselement 21 aufgebrachte Haltekraft reduziert bzw. vollständig weggenommen wird, schnappt die Schaltkuppel 13 nach Art einer Feder in ihre Ausgangslage zurück. Dadurch wird der Schaltvorgang beendet und das Betätigungselement 21 wird durch die Schaltkuppel 13 angehoben.If the holding force applied to the
Der an dem Betätigungselement 21 angebrachte Dichtungsmantel 23 dient dazu, das Federelement 11 und die drei Leiterbahnen 3 vor Schmutzeintritt zu schützen. Gleichzeitig wird durch den Dichtungsmantel 23 das Betätigungselement 21 zwischen dem Deckel 22 und der Oberseite des Steges 5 am Gehäuse 2 fixiert.The attached to the
In den
In den
In der
Dadurch, dass das Betätigungselement 21 bei allen Ausführungsbeispielen als Kugel ausgebildet ist und die Schaltkuppel 13 eine domartige Außenkontur aufweist, die von dem Betätigungselement 21 weggebogen ist, ist gewährleistet, dass der Gipfel der Schaltkuppel 13, der exakt im Mittelpunkt 18 angeordnet ist, in Richtung auf die mittlere Leiterbahn 3 bewegt wird. Das Betätigungselement 21 wird nämlich ausschließlich mit der höchsten Erhebung der Schaltkuppel 13 in Wirkverbindung treten, so dass eine seitliche Betätigung der Schaltkuppel 13 ausgeschlossen werden kann.Characterized in that the
Aufgrund der vier an der Platte 12 angeformten Auflagesockeln 14 sowie der gewählten Wölbung der Schaltkuppel 13 wird ein Schaltweg vorgegeben, der derart groß bemessen ist, dass ein ungewollter Kontakt zwischen der Innenseite der Schaltkuppel 13 und der mittleren Leiterbahn 3 im unbetätigten Zustand der Schaltkuppel 13 nicht möglich ist. Da die beiden Anformungen 19 in dem seitliche Bereich verlaufen, in dem zum Teil erhebliche Spannungen aufgrund der Betätigung der Schaltkuppel 13 entstehen, werden diese in die Platte 12 gleichmäßig eingeleitet. Es ist daher besonders vorteilhaft, wenn der von der Schaltkuppel 13 eingenommene Radius um den Mittelpunkt 18 als Ausgangsbasis für die Außenkonturen der beiden Anformungen 19 herangezogen wird. Die Außenkonturen der Anformungen 19 sollen nämlich kreisförmig um den Mittelpunkt 18 verlaufen. Der Radius der Anformungen 19 sollen 10 % bis 50 % größer sein als der Radius der Schaltkuppel 13 um den Mittelpunkt 18.Due to the four formed on the
Aufgrund dieser gewählten Geometrie-Eigenschaften wird gewährleistet, dass die Abmessung der Platte 12 möglichst klein gehalten ist und dass gleichzeitig die durch das Betätigen der Schaltkuppel 13 entstehenden Spannungen durch die Anformungen 19 gleichmäßig an die Platte 12 weitergeleitet werden.Due to this selected geometry properties ensures that the dimension of the
Claims (14)
- A microswitch (1) consisting of a housing (2) made of at least two conductor paths (3) arranged in the housing (2) and of a spring element (11) supported against the housing (2) which, when not actuated, is lifted off by at least one conductor path (3) and can be moved in the direction of the conductor paths (3) and, by means of actuation by the spring element (11), the conductor paths (3) can be connected together to make an electrical contact,
characterised in that,
the spring element (11) is formed as a plate (12) with a switch dome (13) formed in its area around the midpoint (18) which is lifted off by the conductor paths (3), that the switch dome (13) can be moved through the plane formed by the plate (12) and that the plate (12) has at least two profiles (19) formed onto it opposite one another, which project sideways from the plate (12) and extend in the plane formed by the plate (12). - The microswitch in accordance with Claim 1,
characterised in that,
the plate (12) is rectangular and the switch dome (13) arranged in the midpoint (18) of the plate (12) is circular, that the two profiles (19) opposite one another have a circular external contour and that the radius of the external contours of the profiles (19) in relation to the midpoint (18) of the plate (12) is at least 10 percent larger than the radius of the switch dome (13) about the midpoint (18). - The microswitch in accordance with Claim 1 or 2,
characterised in that,
at least one support base (14) is formed around the outside of the plate (12), that the support base (14) is provided opposite to the switch dome (13) pointing in the direction of the conductor paths (3) and that the support base (14) is at a distance from one of the conductor paths (3) and makes contact with the other conductor path(s) (3). - The microswitch in accordance with Claim 3,
characterised in that,
the support base (14) is formed on each of the corner areas of the plate (12). - The microswitch in accordance with one or more of the aforementioned claims,
characterised in that,
a web (5) is formed onto the housing (2) pointing in the direction of the spring element (11) and that the inner contour of the web (5) corresponds to the outer contour of the spring element (11). - The microswitch in accordance with Claim 5,
characterised in that,
at least the four corner areas of the web (5) are indented in the direction of the housing (2) and the spring element (11). - The microswitch in accordance with one or more of the aforementioned claims,
characterised in that,
the switch dome (13) has an actuation element (21) assigned to it, by means of which the switch dome (13) can be moved from the outside in the direction of the conductor paths (3) and that the actuation element (21) is held supported on the housing (2). - The microswitch in accordance with Claim 7,
characterised in that,
the actuation element (21) has a spherical cross section and that the actuation element is held on the housing (2) so it cannot slip by means of a cover (22). - The microswitch in accordance with Claim 8,
characterised in that,
a sealing jacket (23) is formed onto the actuation element (21) running around the outside of the actuation element (21),
that the free end of the sealing jacket (23) is firmly clamped between the housing (2) and the cover (22). - The microswitch in accordance with Claim 9,
characterised in that,
the cover (22) or the sealing jacket (23) is held on the housing (2) by at least one detent lug (24) of the undercut type, over which a snap-fit projection (25) attached to the cover (22) or the sealing jacket (23) can be moved. - The microswitch in accordance with one or more of the aforementioned claims,
characterised in that,
the spring element (11) is in a floating mounting in the housing (2). - The microswitch in accordance with one or more of the aforementioned claims,
characterised in that,
the corner areas of the housing (2), preferably partial areas of the web (5), are indented in the direction of the spring element (2) and that the indentation of the housing (2) and/or of the web (5) causes the spring element (11) to be locked. - The microswitch in accordance with one or more of the aforementioned claims,
characterised in that,
three conductor paths (3) running in parallel to one another are arranged in the housing (2),
that the conductor paths (3) are all in the same switching plane,
that the spring element (11) is in contact with the two outer conductor paths (3) and
that the inside of the switch dome (13) can be moved over into contact with the middle conductor path (3). - The microswitch in accordance with one or more of Claims 1 to 12,
characterised in that,
three conductor paths (3) running in parallel to one another are arranged in the housing (2),
that the spring element (11) is in contact with the two outer conductor paths (3).
that the central conductor path (3) is accommodated on a lower-level plane than the two outer conductor paths (3) and
that the inside of the switch dome (13) can be moved over into contact with the middle conductor path (3).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005037613A DE102005037613A1 (en) | 2005-08-05 | 2005-08-05 | microswitch |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1750291A1 EP1750291A1 (en) | 2007-02-07 |
EP1750291B1 true EP1750291B1 (en) | 2008-05-07 |
Family
ID=37198816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06013557A Active EP1750291B1 (en) | 2005-08-05 | 2006-06-30 | Microswitch |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1750291B1 (en) |
AT (1) | ATE394785T1 (en) |
DE (2) | DE102005037613A1 (en) |
DK (1) | DK1750291T3 (en) |
ES (1) | ES2306331T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2894650A1 (en) | 2014-01-14 | 2015-07-15 | RAFI GmbH & Co. KG | Switching device |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007062907B3 (en) * | 2007-12-21 | 2009-03-12 | Kleiner Gmbh | Snap disk for use as switching element in keyboard, has curved region enclosed by flat surface that lies in or parallel to plane of circle formed by circular edge, and supporting elements arranged at side of surface turned away from region |
DE102009046704A1 (en) * | 2009-07-15 | 2011-01-20 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | Electric switch |
DE102010037551A1 (en) | 2010-09-15 | 2012-03-15 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | switch |
EP3244430B1 (en) * | 2016-05-09 | 2018-08-29 | RAFI GmbH & Co. KG | Device for converting mechanical movements into an electrical switching signal |
JP7182039B2 (en) * | 2017-12-26 | 2022-12-02 | パナソニックIpマネジメント株式会社 | A movable contact, a switch with a movable contact, and an embossed tape containing the movable contact |
SG11202007327SA (en) * | 2018-02-01 | 2020-08-28 | Razer Asia Pacific Pte Ltd | Key switch mechanisms, user input devices and methods of fabricating a key switch mechanism |
EP3734629B1 (en) | 2019-05-02 | 2023-06-07 | RAFI GmbH & Co. KG | Switching device |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2515185C3 (en) * | 1975-04-08 | 1979-04-26 | Rudolf Schadow Gmbh, 1000 Berlin | Electrical snap switch |
US4029916A (en) * | 1975-04-18 | 1977-06-14 | Northern Electric Company Limited | Multi-contact push-button switch and plural embodiment for keyboard switch assembly |
DE2531841C3 (en) * | 1975-07-16 | 1981-02-26 | Rudolf Schadow Gmbh, 1000 Berlin | Electrical snap switch |
FR2660484B1 (en) * | 1990-03-30 | 1993-08-06 | Sextant Avionique | MINIATURE TOUCH SWITCH DEVICE. |
JP2823370B2 (en) * | 1991-02-22 | 1998-11-11 | アルプス電気株式会社 | Push button switch |
US5343008A (en) * | 1992-02-19 | 1994-08-30 | Ipcinski Ralph G | Sealed switch |
JP3000885B2 (en) * | 1994-12-28 | 2000-01-17 | ヤマハ株式会社 | Switch device |
JPH0927241A (en) * | 1995-07-12 | 1997-01-28 | Fuji Denshi Kogyo Kk | Thin switch |
JPH09198955A (en) * | 1996-01-12 | 1997-07-31 | Alps Electric Co Ltd | Push-button switch |
FR2773246B1 (en) * | 1997-12-26 | 2000-01-28 | Itt Mfg Enterprises Inc | MINIATURIZED ELECTRICAL SWITCH, INTEGRATED IN A CONNECTOR, FOR DETECTION OF THE PRESENCE OF AN ELECTRONIC MEMORY CARD |
DE19816956C1 (en) * | 1998-04-17 | 1999-10-07 | Inovan Stroebe | Snap disk switch with increased contact path |
DE19901799C2 (en) * | 1999-01-19 | 2000-11-30 | Helag Electronic Gmbh | Electromechanical switch |
FR2841037B1 (en) * | 2002-06-13 | 2004-11-26 | Itt Mfg Enterprises Inc | NORMALLY CLOSED MINIATURIZED ELECTRIC SWITCH WITH TACTILE EFFECT |
TW547759U (en) * | 2002-10-16 | 2003-08-11 | Hon Hai Prec Ind Co Ltd | Tact switch |
DE102004040395A1 (en) * | 2003-08-23 | 2005-03-24 | Marquardt Gmbh | Electrical switch used as short-stroke key for keyboard or operating field has housing base provided with recess on its underside receiving projections of housing cover side edge |
-
2005
- 2005-08-05 DE DE102005037613A patent/DE102005037613A1/en not_active Ceased
-
2006
- 2006-06-30 EP EP06013557A patent/EP1750291B1/en active Active
- 2006-06-30 DE DE502006000737T patent/DE502006000737D1/en active Active
- 2006-06-30 ES ES06013557T patent/ES2306331T3/en active Active
- 2006-06-30 DK DK06013557T patent/DK1750291T3/en active
- 2006-06-30 AT AT06013557T patent/ATE394785T1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2894650A1 (en) | 2014-01-14 | 2015-07-15 | RAFI GmbH & Co. KG | Switching device |
Also Published As
Publication number | Publication date |
---|---|
DE102005037613A1 (en) | 2007-02-08 |
DK1750291T3 (en) | 2008-08-25 |
ATE394785T1 (en) | 2008-05-15 |
DE502006000737D1 (en) | 2008-06-19 |
EP1750291A1 (en) | 2007-02-07 |
ES2306331T3 (en) | 2008-11-01 |
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