EP2612339B1 - Pressure switch - Google Patents

Pressure switch Download PDF

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Publication number
EP2612339B1
EP2612339B1 EP12704246.3A EP12704246A EP2612339B1 EP 2612339 B1 EP2612339 B1 EP 2612339B1 EP 12704246 A EP12704246 A EP 12704246A EP 2612339 B1 EP2612339 B1 EP 2612339B1
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EP
European Patent Office
Prior art keywords
pressure switch
latching element
tubular body
retaining ring
latching
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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.)
Not-in-force
Application number
EP12704246.3A
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German (de)
French (fr)
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EP2612339A1 (en
Inventor
Christian GIESSMANN
Rudolf Zimmermann
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.)
Siemens AG
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Siemens AG
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Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2612339A1 publication Critical patent/EP2612339A1/en
Application granted granted Critical
Publication of EP2612339B1 publication Critical patent/EP2612339B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/56—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force

Definitions

  • the invention relates to a pressure switch with an actuating element and a tubular body, wherein in the interior of the pressure switch, a receiving element is arranged, in which a locking element is fixed.
  • Command devices are widely used in command and signaling devices. Such a command and signaling device is used in machines or electrical equipment, which are operated by command devices, such as pushbuttons, selector switches, etc., which act on the controller. These command devices are mounted in control panels, control panels, control cabinet doors or enclosure covers. Command devices are generally modular. That is, they consist of an actuator, a fixing member such as a ring nut or a special mounting bracket and one or more switching elements, which are designed as normally closed or normally closed switching elements. For mounting, the actuator is usually guided from the front through an opening in the dash panel and mounted from behind over the mounting part. The switching elements are mechanically fixed with screws, snap hook or latch on the actuator or on the fastening part. The electrical connection of the switching elements with the controller via the terminals.
  • Pressure switches basically have two operating principles. On the one hand, there are switching crowns, as they are also known in ballpoint pens and on the other so-called heart curves, the z. B. are formed as a guide slots of the housing inner wall of the pressure switch. These heart curves or guide frames can be formed two- or three-dimensional. The advantage of the three-dimensional heart curve is that it has a slight overstroke, as compared to a two-dimensional heart curve, another switching criterion is available. The advantage of the two-dimensional Heart curve can be seen in the simpler tool contour. In addition, this embodiment has a greater resistance to wear.
  • the object of the present invention is to provide a mechanically robust pressure switch against wear, which allows reliable handling.
  • this object is achieved by a pressure switch with an actuating element and a tubular body, in particular a rosette, wherein in the interior of the pressure switch, a receiving element is arranged, in which a locking element is fixed.
  • the invention is characterized in that the latching element is designed to be radially resilient.
  • the pressure switch according to the invention has an actuating element, which can preferably be designed as a transparent, colored button with a connected tubular body.
  • This tubular body of the button is guided in the tubular body of the pressure switch and is in operative connection with the receiving element, in which the latching element is arranged. If the button of the pressure switch is pressed, the receiving element moves against a spring, which is arranged below the receiving element, with.
  • the locking element is arranged, which is preferably designed as a retaining ring.
  • the retaining ring according to the invention is designed to be open and accordingly has two on one level axially in the preferably cylindrically shaped receiving element tightly guided ends.
  • a first end is with radial clearance between the receiving element and the surrounding tubular body of the pressure switch, while a second end, preferably S-shaped, the preferably cylindrical receiving element projects outwardly.
  • This second end touches under resilient bias the inside of the tubular body of the pressure switch.
  • This second end is guided during assembly of the pressure switch via a functional surface, which is arranged on the inside of the tubular body of the pressure switch and above the heart curve, so the guide slot for the second end of the locking element.
  • the guide slot is formed as a recess in the inside of the tubular body of the pressure switch and has an obliquely downwardly guided in the direction of actuation L-shaped projection over which the second end of the retaining ring is guided when actuated to the unactuated state in the actuated Go state and then reach the latched state.
  • the L-shaped projection which may also be referred to as a guide pin, has two legs, which are preferably arranged at an angle ⁇ 90 ° to each other.
  • the first leg of the L-shaped guide pin extends obliquely downward in the direction of actuation of the pressure switch.
  • the second end of the retaining ring is guided in the actuation case on the oblique guide surface of the first leg in a housing contour on the inside of the pressure switch.
  • the second end of the retaining ring then locked in the interface of the two legs of the L-shaped guide pin.
  • the second end of the retaining ring is transferred over a housing projection on the second leg of the guide pin over in the unactuated position.
  • the retaining ring must be able to spring radially during assembly.
  • the ends of the retaining ring, especially the the second ones must not be sharp-edged in order not to damage the heart curve introduced in the plastic rosette and also the functional surface swept over during the assembly.
  • the ends of the spring ring preferably require a defined rounding.
  • the structural design of the rounding must be designed so that the fillets are not too large, so that the spring ring does not jump out of the heart curve. Without rounding, there is the possibility that the spring washer will damage the functional surface above the heart curve and this itself.
  • a first inward and then outward curvature preferably S-shaped, is selected.
  • the radially outer second end of the retaining ring can completely and without being hampered by a bending radius, dive into the heart curve.
  • the pressure switch according to the invention is characterized by its mechanical robustness against wear and its reliable and easy handling.
  • Essential to the invention is the radially resilient latching element, which is preferably designed as a retaining ring.
  • the second end of this retaining ring has a preferably S-shaped bulge, which leads into the rounded end region. This second end serves as a switching pin, which allows locking by differently designed guide slots on the housing inner wall of the pressure switch.
  • the radial suspension of the retaining ring prevents the functional surface of the rosette from being damaged during assembly.
  • the ends of the retaining ring must not be sharp-edged so as not to damage the functional surface and the plastic rosette.
  • the bending of the switching pin is selected via a bend running first inwards and then outwards.
  • Fig. 1 shows an embodiment of a pressure switch 1 according to the invention with an actuating element 2 and a tubular body, which may be preferably designed as a plastic rosette.
  • a receiving element 4 is arranged, in which a locking element 5 is axially fixed.
  • the actuating element 2 can also be regarded as a device for receiving an actuating element. This case is present when the actuator preferably as a transparent, colored button with connected tubular body is executed.
  • This tubular body of the button is guided in the tubular body 3 of the pressure switch 1 - ie in the plastic rosette - and is in operative use with the receiving element 4, in which the locking element 5 is arranged. If the button of the pressure switch 1 is pressed, the receiving element 4 moves against a spring, which is arranged below the receiving element 4, with.
  • the locking element 5 is arranged, which is preferably designed as a retaining ring.
  • the retaining ring is made open and thus has two ends, wherein the first end 6 of the locking element 5 or retaining ring, in the axial direction of the actuator fixed in the receiving element 4, which is preferably also cylindrical, is fixed.
  • the second end 7 of the latching element 5 is in the end region, which is arranged opposite the first end 6, preferably S-shaped and thus protrudes the preferably cylindrical receiving element 4. Also this end is guided in the axial direction of the actuator closely in the receiving element 4.
  • This second end 7 serves as a switching pin and is guided on the inside of the tubular body 3 of the pressure switch 1.
  • Fig. 1 shows the pressure switch according to the invention in the non-actuated state.
  • Fig. 2 the pressure switch 1 according to the invention is shown in the partially actuated state.
  • Out Fig. 2 shows that the receiving element 4 has moved together with locking element 5 in the direction of actuation.
  • the guide slot 8 which as a recess in the inside of the tubular Body 3 of the pressure switch 1 is formed
  • a guide pin 9 free which is formed as a projection in the recess of the guide slot 8.
  • the guide pin 9 is preferably L-shaped and has two legs 10, 11, which are preferably arranged at an angle ⁇ 90 ° to each other.
  • the leg 10 of the L-shaped guide pin 9 extends obliquely downward in the direction of actuation of the pressure switch 1.
  • the second end 7 of the retaining ring is guided in the actuation case on the inclined guide surface 12 of the leg 10.
  • Fig. 3 shows the pressure switch 1 according to the invention in the actuated state before locking.
  • the second end 7 of the retaining ring in the case of operation via the oblique guide surface 12 of the leg 10 of the guide pin 9 engages in a housing contour 13 on the inside of the pressure switch 1.
  • Fig. 4 the pressure switch 1 according to the invention is shown in the locked state.
  • the second end 7 of the retaining ring in the interface 14 of the two legs 10, 11 of the L-shaped guide pin 9.
  • Out Fig. 5 goes the pressure switch 1 according to the invention in the actuated state after the latched state. After the latched state, the second end 7 of the retaining ring is transferred over a housing projection 15 on the leg 11 of the guide pin 9 over in the unactuated position.
  • the retaining ring must be able to spring radially during assembly.
  • the ends 6, 7 of the retaining ring must not be sharp-edged so as not to damage the heart curve introduced in the plastic rosette.
  • the ends 6, 7 of the spring ring preferably require a defined rounding.
  • the structural design of the rounding must be so be designed so that the fillets are not too large, so that the spring ring does not jump out of the heart curve. Without rounding it is possible that the spring washer will damage both the functional surface and the heart curve.
  • a bend which is first inward and then outward, preferably S-shaped, is selected for the bending of the second end 7 of the retaining ring.
  • the radially outer second end 7 of the retaining ring can completely and without being hampered by a bending radius, dip into the heart curve.
  • the pressure switch according to the invention is characterized by its mechanical robustness against wear and its reliable and easy handling.
  • Essential to the invention is the radially resilient locking element, which is preferably designed as a retaining ring made of metal.
  • the second end of this retaining ring has a preferably S-shaped bulge, which leads into the rounded end region. This second end serves as a switching pin, which allows locking by differently designed guide slots on the housing inner wall of the pressure switch.
  • the radial suspension of the retaining ring prevents the functional surface of the rosette from being damaged during assembly.
  • the ends of the retaining ring must not be sharp-edged so as not to damage the heart curve introduced in the plastic rosette.
  • the bending of the switching pin is selected via a bend running first inwards and then outwards.
  • the radially outward switching pin can completely and without being hampered by a bending radius, dive into the heart curve.

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  • Push-Button Switches (AREA)

Description

Die Erfindung betrifft einen Druckschalter mit einem Betätigungselement und einem rohrförmigen Körper, wobei im Inneren des Druckschalters ein Aufnahmeelement angeordnet ist, in welchem ein Rastelement fixiert ist.The invention relates to a pressure switch with an actuating element and a tubular body, wherein in the interior of the pressure switch, a receiving element is arranged, in which a locking element is fixed.

Druckschalter werden verbreitet bei Befehls- und Meldegeräten eingesetzt. Ein derartiges Befehls- und Meldegerät kommt bei Maschinen oder elektrischen Anlagen zum Einsatz, die über Befehlsgeräte, wie zum Beispiel Drucktaster, Wahlschalter usw., die auf die Steuerung einwirken, bedient werden. Diese Befehlsgeräte werden in Schalttafeln, Bedientableaus, Schaltschranktüren oder Gehäusedeckel montiert. Befehlsgeräte sind in der Regel modular aufgebaut. Das bedeutet, sie bestehen aus einem Betätiger, einem Befestigungsteil wie zum Beispiel einer Ringmutter oder einem speziellen Montagehalter und einem oder mehreren Schaltelementen, die als Öffner- oder Schließer-Schaltglieder ausgeführt sind. Zur Montage wird der Betätiger in der Regel von vorn durch eine Öffnung in der Schalttafel geführt und von hinten über das Befestigungsteil montiert. Die Schaltelemente werden mit Schrauben, Schnapphaken oder Riegel mechanisch am Betätiger oder am Befestigungsteil fixiert. Die elektrische Verbindung der Schaltelemente mit der Steuerung erfolgt über die Anschlussklemmen.Pressure switches are widely used in command and signaling devices. Such a command and signaling device is used in machines or electrical equipment, which are operated by command devices, such as pushbuttons, selector switches, etc., which act on the controller. These command devices are mounted in control panels, control panels, control cabinet doors or enclosure covers. Command devices are generally modular. That is, they consist of an actuator, a fixing member such as a ring nut or a special mounting bracket and one or more switching elements, which are designed as normally closed or normally closed switching elements. For mounting, the actuator is usually guided from the front through an opening in the dash panel and mounted from behind over the mounting part. The switching elements are mechanically fixed with screws, snap hook or latch on the actuator or on the fastening part. The electrical connection of the switching elements with the controller via the terminals.

Ein Beispiel von Druckschalter mit einem radial federnden Rastelement wird in JP-A-2008204633 offenbart.An example of pressure switch with a radially resilient latching element is in JP-A-2008204633 disclosed.

Druckschalter weisen grundsätzlich zwei Funktionsprinzipien auf. Zum Einen gibt es Schaltkronen, wie sie auch bei Kugelschreibern bekannt sind und zum Anderen so genannte Herzkurven, die z. B. als Führungskulissen der Gehäuseinnenwand des Druckschalters ausgebildet sind. Diese Herzkurven oder Führungskulissen können zwei- oder dreidimensional ausgebildet sein. Der Vorteil der dreidimensionalen Herzkurve besteht darin, dass sie einen geringen Überhub aufweist, da gegenüber einer zweidimensionalen Herzkurve ein weiteres Weichenkriterium zur Verfügung steht. Der Vorteil der zweidimensionalen Herzkurve ist in der einfacheren Werkzeugkontur zu sehen. Zudem weist diese Ausführungsform eine größere Widerstandsfähigkeit gegenüber Verschleiß auf.Pressure switches basically have two operating principles. On the one hand, there are switching crowns, as they are also known in ballpoint pens and on the other so-called heart curves, the z. B. are formed as a guide slots of the housing inner wall of the pressure switch. These heart curves or guide frames can be formed two- or three-dimensional. The advantage of the three-dimensional heart curve is that it has a slight overstroke, as compared to a two-dimensional heart curve, another switching criterion is available. The advantage of the two-dimensional Heart curve can be seen in the simpler tool contour. In addition, this embodiment has a greater resistance to wear.

Die Aufgabe der vorliegenden Erfindung besteht darin, einen mechanisch robusten Druckschalter gegenüber Verschleiß zu schaffen, der eine zuverlässige Handhabung ermöglicht.The object of the present invention is to provide a mechanically robust pressure switch against wear, which allows reliable handling.

Diese Aufgabe wird durch einen Druckschalter mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Aus- und Weiterbildungen, welche einzeln oder in Kombination miteinander eingesetzt werden können, sind der Gegenstand der abhängigen Ansprüche.This object is achieved by a pressure switch with the features of claim 1. Advantageous embodiments and developments, which can be used individually or in combination with each other, are the subject of the dependent claims.

Erfindungsgemäß wird diese Aufgabe durch einen Druckschalter mit einem Betätigungselement und einem rohrförmigen Körper gelöst, insbesondere einer Rosette, wobei im Inneren des Druckschalters ein Aufnahmeelement angeordnet ist, in welchem ein Rastelement fixiert ist. Die Erfindung zeichnet sich dabei dadurch aus, dass das Rastelement radial federnd ausgebildet ist.According to the invention this object is achieved by a pressure switch with an actuating element and a tubular body, in particular a rosette, wherein in the interior of the pressure switch, a receiving element is arranged, in which a locking element is fixed. The invention is characterized in that the latching element is designed to be radially resilient.

Der erfindungsgemäße Druckschalter weist ein Betätigungselement auf, das vorzugsweise als transparente, farbige Schaltfläche mit angeschlossenem rohrförmigem Körper ausgeführt sein kann. Dieser rohrförmige Körper der Schaltfläche ist im rohrförmigen Körper des Druckschalters geführt und steht in Wirkverbindung mit dem Aufnahmeelement, in welchem das Rastelement angeordnet ist. Wird die Schaltfläche des Druckschalters eingedrückt, bewegt sich auch das Aufnahmeelement entgegen einer Feder, die unterhalb des Aufnahmeelements angeordnet ist, mit. Im Aufnahmeelement ist das Rastelement angeordnet, das vorzugsweise als Haltering ausgebildet ist.The pressure switch according to the invention has an actuating element, which can preferably be designed as a transparent, colored button with a connected tubular body. This tubular body of the button is guided in the tubular body of the pressure switch and is in operative connection with the receiving element, in which the latching element is arranged. If the button of the pressure switch is pressed, the receiving element moves against a spring, which is arranged below the receiving element, with. In the receiving element, the locking element is arranged, which is preferably designed as a retaining ring.

Der erfindungsgemäße Haltering ist offen ausgeführt und weist demgemäß zwei auf einer Ebene axial im vorzugsweise zylindrisch ausgebildeten Aufnahmeelement eng geführte Enden auf. Ein erstes Ende liegt mit radialem Spiel zwischen Aufnahmeelement und dem umgebenden rohrförmigen Körper des Druckschalters, während ein zweites Ende, vorzugweise S-förmig ausgebildet, dem vorzugsweise zylindrischen Aufnahmeelement nach außen vorsteht. Dieses zweite Ende berührt unter federnder Vorspannung die Innenseite des rohrförmigen Körpers des Druckschalters. Dieses zweite Ende wird beim Zusammenbau des Druckschalters über eine Funktionsfläche geführt, die an der Innenseite des rohrförmigen Körpers des Druckschalters und oberhalb der Herzkurve, also der Führungskulisse für das zweite Ende des Rastelementes, angeordnet ist. Die Führungskulisse ist als Ausnehmung in der Innenseite des rohrförmigen Körpers des Druckschalters ausgebildet und weist einen schräg nach unten in Richtung der Betätigung geführten L-förmigen Vorsprung auf, über welchen das zweite Ende des Halteringes bei Betätigung geführt wird, um vom unbetätigten Zustand in den betätigten Zustand überzugehen und danach den verrasteten Zustand zu erreichen.The retaining ring according to the invention is designed to be open and accordingly has two on one level axially in the preferably cylindrically shaped receiving element tightly guided ends. A first end is with radial clearance between the receiving element and the surrounding tubular body of the pressure switch, while a second end, preferably S-shaped, the preferably cylindrical receiving element projects outwardly. This second end touches under resilient bias the inside of the tubular body of the pressure switch. This second end is guided during assembly of the pressure switch via a functional surface, which is arranged on the inside of the tubular body of the pressure switch and above the heart curve, so the guide slot for the second end of the locking element. The guide slot is formed as a recess in the inside of the tubular body of the pressure switch and has an obliquely downwardly guided in the direction of actuation L-shaped projection over which the second end of the retaining ring is guided when actuated to the unactuated state in the actuated Go state and then reach the latched state.

Der L-förmige Vorsprung, der auch als Führungszapfen bezeichnet werden kann, weist zwei Schenkel auf, die vorzugsweise in einem Winkel <90° zueinander angeordnet sind. Der erste Schenkel des L-förmigen Führungszapfens verläuft dabei schräg nach unten in Betätigungsrichtung des Druckschalters. Das zweite Ende des Halterings wird im Betätigungsfall über die schräge Führungsfläche des ersten Schenkels in eine Gehäusekontur an der Innenseite des Druckschalters geführt. Durch eine Bewegung entgegen der Betätigungsrichtung verrastet das zweite Ende des Halteringes dann in der Schnittstelle der zwei Schenkel des L-förmigen Führungszapfens. Nach dem verrasteten Zustand wird das zweite Ende des Halteringes über einen Gehäusevorsprung am zweiten Schenkel des Führungszapfens vorbei in die unbetätigte Stellung überführt.The L-shaped projection, which may also be referred to as a guide pin, has two legs, which are preferably arranged at an angle <90 ° to each other. The first leg of the L-shaped guide pin extends obliquely downward in the direction of actuation of the pressure switch. The second end of the retaining ring is guided in the actuation case on the oblique guide surface of the first leg in a housing contour on the inside of the pressure switch. By a movement opposite to the actuating direction, the second end of the retaining ring then locked in the interface of the two legs of the L-shaped guide pin. After the latched state, the second end of the retaining ring is transferred over a housing projection on the second leg of the guide pin over in the unactuated position.

Damit die Funktionsfläche der Rosette bei der Montage nicht beschädigt wird, muss der Haltering während der Montage radial federn können. Die Enden des Halteringes, vor allem das zweite dürfen dabei nicht scharfkantig sein, um die in der Kunststoffrosette eingebrachte Herzkurve und auch die während des Zusammenbaues überstrichene Funktionsfläche nicht zu beschädigen. Die Enden des Federrings benötigen vorzugsweise eine definierte Verrundung. Dabei müssen die baulichen Ausgestaltungen der Verrundung so konzipiert sein, dass die Verrundungen nicht zu groß sind, damit der Federring nicht aus der Herzkurve springt. Ohne Verrundung besteht die Möglichkeit, dass der Federring die Funktionsfläche oberhalb der Herzkurve und diese selbst beschädigt.So that the functional surface of the rosette is not damaged during assembly, the retaining ring must be able to spring radially during assembly. The ends of the retaining ring, especially the the second ones must not be sharp-edged in order not to damage the heart curve introduced in the plastic rosette and also the functional surface swept over during the assembly. The ends of the spring ring preferably require a defined rounding. The structural design of the rounding must be designed so that the fillets are not too large, so that the spring ring does not jump out of the heart curve. Without rounding, there is the possibility that the spring washer will damage the functional surface above the heart curve and this itself.

Da radial nur ein geringer Einbauraum zur Verfügung steht, wird für die Abwinklung des zweiten Endes des Halteringes eine zuerst nach innen und dann nach außen laufende Biegung, vorzugsweise S-förmig, gewählt. Somit kann das radial außen stehende zweite Ende des Halterings vollständig und ohne durch einen Biegeradius behindert zu werden, in die Herzkurve eintauchen.Since only a small installation space is available radially, for bending the second end of the retaining ring a first inward and then outward curvature, preferably S-shaped, is selected. Thus, the radially outer second end of the retaining ring can completely and without being hampered by a bending radius, dive into the heart curve.

Der erfindungsgemäße Druckschalter zeichnet sich durch seine mechanische Robustheit gegenüber Verschleiß und seine zuverlässige und einfache Handhabung aus. Erfindungswesentlich ist das radial federnde Rastelement, das vorzugsweise als Haltering ausgebildet ist. Das zweite Ende dieses Halteringes weist eine vorzugsweise S-förmige Ausbuchtung auf, die in den verrundeten Endbereich führt. Dieses zweite Ende dient als Schaltzapfen, der durch unterschiedlich ausgeführte Führungskulissen an der Gehäuseinnenwand des Druckschalters eine Verrastung ermöglicht. Die radiale Federung des Halteringes verhindert, dass die Funktionsfläche der Rosette bei der Montage beschädigt wird. Die Enden des Halteringes dürfen nicht scharfkantig ausgebildet sein, um die Funktionsfläche und die Kunststoffrosette nicht zu beschädigen. Da radial nur ein geringer Einbauraum zur Verfügung steht, wird die Abwinklung des Schaltzapfens über eine zuerst nach innen und dann nach außen laufende Biegung gewählt. Somit kann der radial nach außen stehende Schaltzapfen vollständig und ohne durch einen Biegeradius behindert zu werden, in die Herzkurve eintauchen.The pressure switch according to the invention is characterized by its mechanical robustness against wear and its reliable and easy handling. Essential to the invention is the radially resilient latching element, which is preferably designed as a retaining ring. The second end of this retaining ring has a preferably S-shaped bulge, which leads into the rounded end region. This second end serves as a switching pin, which allows locking by differently designed guide slots on the housing inner wall of the pressure switch. The radial suspension of the retaining ring prevents the functional surface of the rosette from being damaged during assembly. The ends of the retaining ring must not be sharp-edged so as not to damage the functional surface and the plastic rosette. Since only a small installation space is available radially, the bending of the switching pin is selected via a bend running first inwards and then outwards. Thus, the radially after Outside switching shafts completely and without being hindered by a bending radius, dive into the heart curve.

Weitere Vorteile und Ausführungen der Erfindung werden nachfolgend anhand von Ausführungsbeispielen sowie anhand der Zeichnung erläutert.Further advantages and embodiments of the invention will be explained below with reference to embodiments and with reference to the drawing.

Dabei zeigen schematisch:

  • Fig. 1 in einer perspektivischen Schnittdarstellung ein Ausführungsbeispiel eines erfindungsgemäßen Druckschalters im unbetätigten Zustand;
  • Fig. 2 in einer perspektivischen Schnittdarstellung den erfindungsgemäßen Druckschalter im teilweise betätigten Zustand;
  • Fig. 3 in einer perspektivischen Schnittdarstellung den erfindungsgemäßen Druckschalter im betätigten Zustand vor der Verrastung;
  • Fig. 4 in einer perspektivischen Schnittdarstellung den erfindungsgemäßen Druckschalter im verrasteten Zustand;
  • Fig. 5 in einer perspektivischen Schnittdarstellung den erfindungsgemäßen Druckschalter im betätigten Zustand nach dem verrasteten Zustand.
Here are shown schematically:
  • Fig. 1 in a perspective sectional view of an embodiment of a pressure switch according to the invention in the unactuated state;
  • Fig. 2 in a perspective sectional view of the pressure switch according to the invention in the partially actuated state;
  • Fig. 3 in a perspective sectional view of the pressure switch according to the invention in the actuated state before locking;
  • Fig. 4 in a perspective sectional view of the pressure switch according to the invention in the locked state;
  • Fig. 5 in a perspective sectional view of the pressure switch according to the invention in the actuated state after the latched state.

Fig. 1 zeigt ein Ausführungsbeispiel eines erfindungsgemäßen Druckschalters 1 mit einem Betätigungselement 2 und einem rohrförmigen Körper, der vorzugsweise als Kunststoffrosette ausgeführt sein kann. Im Inneren des Druckschalters 1 ist ein Aufnahmeelement 4 angeordnet, in welchem ein Rastelement 5 axial fixiert ist. Das Betätigungselement 2 kann auch als Vorrichtung zur Aufnahme eines Betätigungselementes angesehen werden. Dieser Fall liegt dann vor, wenn das Betätigungselement vorzugsweise als transparente, farbige Schaltfläche mit angeschlossenem rohrförmigem Körper ausgeführt ist. Dieser rohrförmige Körper der Schaltfläche ist im rohrförmigen Körper 3 des Druckschalters 1 - also in der Kunststoffrosette - geführt und steht in Wirkverwendung mit dem Aufnahmeelement 4, in welchem das Rastelement 5 angeordnet ist. Wird die Schaltfläche des Druckschalters 1 eingedrückt, bewegt sich auch das Aufnahmeelement 4 entgegen einer Feder, die unterhalb des Aufnahmeelementes 4 angeordnet ist, mit. Fig. 1 shows an embodiment of a pressure switch 1 according to the invention with an actuating element 2 and a tubular body, which may be preferably designed as a plastic rosette. Inside the pressure switch 1, a receiving element 4 is arranged, in which a locking element 5 is axially fixed. The actuating element 2 can also be regarded as a device for receiving an actuating element. This case is present when the actuator preferably as a transparent, colored button with connected tubular body is executed. This tubular body of the button is guided in the tubular body 3 of the pressure switch 1 - ie in the plastic rosette - and is in operative use with the receiving element 4, in which the locking element 5 is arranged. If the button of the pressure switch 1 is pressed, the receiving element 4 moves against a spring, which is arranged below the receiving element 4, with.

Im Aufnahmeelement 4 ist das Rastelement 5 angeordnet, das vorzugsweise als Haltering ausgebildet ist. Der Haltering ist offen ausgeführt und weist demgemäß zwei Enden auf, wobei das erste Ende 6 des Rastelementes 5 beziehungsweise Halteringes, in axialer Richtung des Betätigers fest im Aufnahmeelement 4, das vorzugsweise auch zylindrisch ausgebildet ist, fixiert ist. Das zweite Ende 7 des Rastelements 5 ist im Endbereich, der dem ersten Ende 6 gegenüber liegend angeordnet ist, vorzugsweise S-förmig ausgebildet und steht somit dem vorzugsweise zylindrischen Aufnahmeelement 4 vor. Auch dieses Ende ist in axialer Richtung des Betätigers eng im Aufnahmeelement 4 geführt. Dieses zweite Ende 7 dient als Schaltzapfen und wird an der Innenseite des rohrförmigen Körpers 3 des Druckschalters 1 geführt. Dieser Schaltzapfen wird beim Zusammenbau bei Betätigen des Druckschalters 1 über eine Funktionsfläche geführt, die an der Innenseite des rohrförmigen Körpers 3 des Druckschalters 1 oberhalb der Herzkurve, also der Führungskulisse 8 für das Rastelement 5 angeordnet ist. Die Führungskulisse 8 ist als Ausnehmung in der Innenseite des rohrförmigen Körpers 3 des Druckschalters 1 ausgebildet. Fig. 1 zeigt den erfindungsgemäßen Druckschalter im nicht betätigten Zustand.In the receiving element 4, the locking element 5 is arranged, which is preferably designed as a retaining ring. The retaining ring is made open and thus has two ends, wherein the first end 6 of the locking element 5 or retaining ring, in the axial direction of the actuator fixed in the receiving element 4, which is preferably also cylindrical, is fixed. The second end 7 of the latching element 5 is in the end region, which is arranged opposite the first end 6, preferably S-shaped and thus protrudes the preferably cylindrical receiving element 4. Also this end is guided in the axial direction of the actuator closely in the receiving element 4. This second end 7 serves as a switching pin and is guided on the inside of the tubular body 3 of the pressure switch 1. This switching pin is guided during assembly on actuation of the pressure switch 1 via a functional surface which is arranged on the inside of the tubular body 3 of the pressure switch 1 above the heart cam, so the guide slot 8 for the locking element 5. The guide slot 8 is formed as a recess in the inside of the tubular body 3 of the pressure switch 1. Fig. 1 shows the pressure switch according to the invention in the non-actuated state.

In Fig. 2 ist der erfindungsgemäße Druckschalter 1 im teilweise betätigten Zustand dargestellt. Aus Fig. 2 geht hervor, dass sich das Aufnahmeelement 4 samt Rastelement 5 in die Betätigungsrichtung verschoben hat. Dadurch gibt die Führungskulisse 8, die als Ausnehmung in der Innenseite des rohrförmigen Körpers 3 des Druckschalters 1 ausgebildet ist, einen Führungszapfen 9 frei, der als Vorsprung in der Ausnehmung der Führungskulisse 8 ausgebildet ist. Der Führungszapfen 9 ist vorzugsweise L-förmig ausgebildet und weist zwei Schenkel 10, 11 auf, die vorzugsweise in einem Winkel <90° zueinander angeordnet sind. Der Schenkel 10 des L-förmigen Führungszapfens 9 verläuft dabei schräg nach unten in Betätigungsrichtung des Druckschalters 1. Das zweite Ende 7 des Halterings wird im Betätigungsfall über die schräge Führungsfläche 12 des Schenkels 10 geführt.In Fig. 2 the pressure switch 1 according to the invention is shown in the partially actuated state. Out Fig. 2 shows that the receiving element 4 has moved together with locking element 5 in the direction of actuation. Thereby gives the guide slot 8, which as a recess in the inside of the tubular Body 3 of the pressure switch 1 is formed, a guide pin 9 free, which is formed as a projection in the recess of the guide slot 8. The guide pin 9 is preferably L-shaped and has two legs 10, 11, which are preferably arranged at an angle <90 ° to each other. The leg 10 of the L-shaped guide pin 9 extends obliquely downward in the direction of actuation of the pressure switch 1. The second end 7 of the retaining ring is guided in the actuation case on the inclined guide surface 12 of the leg 10.

Fig. 3 zeigt den erfindungsgemäßen Druckschalter 1 im betätigten Zustand vor der Verrastung. Hier ist dargestellt, wie das zweite Ende 7 des Halteringes im Betätigungsfall über die schräge Führungsfläche 12 des Schenkels 10 des Führungszapfens 9 in eine Gehäusekontur 13 an der Innenseite des Druckschalters 1 eingreift. Fig. 3 shows the pressure switch 1 according to the invention in the actuated state before locking. Here it is shown how the second end 7 of the retaining ring in the case of operation via the oblique guide surface 12 of the leg 10 of the guide pin 9 engages in a housing contour 13 on the inside of the pressure switch 1.

In Fig. 4 ist der erfindungsgemäße Druckschalter 1 im verrasteten Zustand dargestellt. Durch eine Bewegung entgegen der Betätigungsrichtung verrastet das zweite Ende 7 des Halteringes in der Schnittstelle 14 der zwei Schenkel 10, 11 des L-förmigen Führungszapfens 9.In Fig. 4 the pressure switch 1 according to the invention is shown in the locked state. By a movement counter to the actuating direction, the second end 7 of the retaining ring in the interface 14 of the two legs 10, 11 of the L-shaped guide pin 9.

Aus Fig. 5 geht der erfindungsgemäße Druckschalter 1 im betätigten Zustand nach dem verrasteten Zustand hervor. Nach dem verrasteten Zustand wird das zweite Ende 7 des Halterings über einen Gehäusevorsprung 15 am Schenkel 11 des Führungszapfens 9 vorbei in die unbetätigte Stellung überführt.Out Fig. 5 goes the pressure switch 1 according to the invention in the actuated state after the latched state. After the latched state, the second end 7 of the retaining ring is transferred over a housing projection 15 on the leg 11 of the guide pin 9 over in the unactuated position.

Damit die Funktionsfläche der Rosette bei der Montage nicht beschädigt wird, muss der Haltering während der Montage radial federn können. Die Enden 6, 7 des Halteringes dürfen dabei nicht scharfkantig sein, um die in der Kunststoffrosette eingebrachte Herzkurve nicht zu beschädigen. Die Enden 6, 7 des Federrings benötigen vorzugsweise eine definierte Verrundung. Dabei müssen die baulichen Ausgestaltungen der Verrundung so konzipiert sein, dass die Verrundungen nicht zu groß sind, damit der Federring nicht aus der Herzkurve springt. Ohne Verrundung besteht die Möglichkeit, dass der Federring sowohl die Funktionsfläche als auch die Herzkurve beschädigt.So that the functional surface of the rosette is not damaged during assembly, the retaining ring must be able to spring radially during assembly. The ends 6, 7 of the retaining ring must not be sharp-edged so as not to damage the heart curve introduced in the plastic rosette. The ends 6, 7 of the spring ring preferably require a defined rounding. The structural design of the rounding must be so be designed so that the fillets are not too large, so that the spring ring does not jump out of the heart curve. Without rounding it is possible that the spring washer will damage both the functional surface and the heart curve.

Da radial nur ein geringer Einbauraum zur Verfügung steht, wird für die Abwinklung des zweiten Endes 7 des Halterings, eine zuerst nach innen und dann nach außen laufende Biegung, vorzugsweise S-förmig, gewählt. Somit kann das radial außen stehende zweite Ende 7 des Halterings vollständig und ohne durch einen Biegeradius behindert zu werden, in die Herzkurve eintauchen.Since only a small installation space is available radially, a bend which is first inward and then outward, preferably S-shaped, is selected for the bending of the second end 7 of the retaining ring. Thus, the radially outer second end 7 of the retaining ring can completely and without being hampered by a bending radius, dip into the heart curve.

Der erfindungsgemäße Druckschalter zeichnet sich durch seine mechanische Robustheit gegenüber Verschleiß und seine zuverlässige und einfache Handhabung aus. Erfindungswesentlich ist das radial federnde Rastelement, das vorzugsweise als Haltering aus Metall ausgebildet ist. Das zweite Ende dieses Halterings weist eine vorzugsweise S-förmige Ausbuchtung auf, die in den verrundeten Endbereich führt. Dieses zweite Ende dient als Schaltzapfen, der durch unterschiedlich ausgeführte Führungskulissen an der Gehäuseinnenwand des Druckschalters eine Verrastung ermöglicht. Die radiale Federung des Halteringes verhindert, dass die Funktionsfläche der Rosette bei der Montage beschädigt wird. Die Enden des Halteringes dürfen nicht scharfkantig ausgebildet sein, um die in der Kunststoffrosette eingebrachte Herzkurve nicht zu beschädigen. Da radial nur ein geringer Einbauraum zur Verfügung steht, wird die Abwinklung des Schaltzapfens über eine zuerst nach innen und dann nach außen laufende Biegung gewählt. Somit kann der radial nach außen stehende Schaltzapfen vollständig und ohne durch einen Biegeradius behindert zu werden, in die Herzkurve eintauchen.The pressure switch according to the invention is characterized by its mechanical robustness against wear and its reliable and easy handling. Essential to the invention is the radially resilient locking element, which is preferably designed as a retaining ring made of metal. The second end of this retaining ring has a preferably S-shaped bulge, which leads into the rounded end region. This second end serves as a switching pin, which allows locking by differently designed guide slots on the housing inner wall of the pressure switch. The radial suspension of the retaining ring prevents the functional surface of the rosette from being damaged during assembly. The ends of the retaining ring must not be sharp-edged so as not to damage the heart curve introduced in the plastic rosette. Since only a small installation space is available radially, the bending of the switching pin is selected via a bend running first inwards and then outwards. Thus, the radially outward switching pin can completely and without being hampered by a bending radius, dive into the heart curve.

Claims (9)

  1. Pressure switch (1) comprising an operating element (2) and a tubular body (3), wherein a receiving element (4) in which a latching element (5) is fixed is arranged in the interior of the pressure switch (1), wherein the latching element (5) is of radially resilient design, characterized in that the latching element (5) is in the form of an open ring with two ends (6, 7), which ring is guided tightly in the axial direction in the receiving element (4).
  2. Pressure switch (1) according to Claim 1, characterized in that at least the second end (7) of the latching element (5) exhibits defined rounding.
  3. Pressure switch (1) according to one of the preceding claims, characterized in that the latching element (5) is of S-shaped design in front of the second end (7).
  4. Pressure switch (1) according to one of the preceding claims, characterized in that the second end (7) of the latching element (5) can be inserted into a slotted guide link (8) from above by means of a guide surface which is arranged on the inner face of the tubular body (3).
  5. Pressure switch (1) according to one of the preceding claims, characterized in that the slotted guide link (8) is in the form of a recess in the inner face of the tubular body (3), a guide pin (9) being arranged in the said recess.
  6. Pressure switch (1) according to one of the preceding claims, characterized in that the second end (7) of the latching element (5) can be guided into a latching position by means of the guide pin (9) in the operated state, which latching position is arranged in a recess within the slotted guide link (8).
  7. Pressure switch (1) according to one of the preceding claims, characterized in that the second end (7) of the latching element (5) can be guided by means of a housing projection (15) after the latched state, before the latching element (5) moves into the unoperated state.
  8. Pressure switch (1) according to one of the preceding claims, characterized in that the latching element (5) is produced from metal.
  9. Pressure switch (1) according to one of the preceding claims, characterized in that the latching element (5) is produced from wire with a circular cross section.
EP12704246.3A 2011-02-24 2012-02-03 Pressure switch Not-in-force EP2612339B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110004673 DE102011004673A1 (en) 2011-02-24 2011-02-24 pressure switch
PCT/EP2012/051825 WO2012113636A1 (en) 2011-02-24 2012-02-03 Pressure switch

Publications (2)

Publication Number Publication Date
EP2612339A1 EP2612339A1 (en) 2013-07-10
EP2612339B1 true EP2612339B1 (en) 2016-11-02

Family

ID=45607728

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12704246.3A Not-in-force EP2612339B1 (en) 2011-02-24 2012-02-03 Pressure switch

Country Status (5)

Country Link
EP (1) EP2612339B1 (en)
KR (1) KR101653990B1 (en)
CN (1) CN103270569B (en)
DE (1) DE102011004673A1 (en)
WO (1) WO2012113636A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112013007093B4 (en) * 2013-09-24 2017-10-26 Siemens Aktiengesellschaft Key device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH595687A5 (en) * 1975-08-29 1978-02-28 Tschudin & Heid Ag
DE2816869A1 (en) * 1978-04-18 1979-10-31 Widmaier Fa Hans Pushbutton switch in rectangular housing - has slide with switching mechanism with spring scanning labyrinthine switching link
DD292106A5 (en) * 1990-02-08 1991-07-18 Ingenieurbuero Elektrogeraete,De EQUIPMENT INSTALLATION SWITCH
DE19951422B4 (en) * 1999-10-26 2006-04-06 AEG Hausgeräte GmbH Retractable rotary control unit
DE19960695A1 (en) * 1999-12-16 2001-06-21 Moeller Gmbh Pushbutton for click and push button function
DE102004030627B3 (en) * 2004-06-24 2005-08-18 Berker Gmbh & Co. Kg Electrical press button switch for switching vehicle functions on and off has movable contact parts formed on sliding element in one piece and at least one spring lobe that interacts with housing guide formed on sliding element
JP2007042485A (en) 2005-08-04 2007-02-15 Matsushita Electric Ind Co Ltd Push-button mounting structure
JP4870592B2 (en) * 2007-02-16 2012-02-08 株式会社秩父富士 Pushbutton switch with display
KR100862411B1 (en) * 2007-03-09 2008-10-08 주식회사 신창전기 Apparatus of push switch for vehicles

Also Published As

Publication number Publication date
DE102011004673A1 (en) 2012-08-30
KR101653990B1 (en) 2016-09-05
KR20140009223A (en) 2014-01-22
CN103270569B (en) 2016-04-20
WO2012113636A1 (en) 2012-08-30
EP2612339A1 (en) 2013-07-10
CN103270569A (en) 2013-08-28

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