EP1997121B1 - Tappet for actuating a switching element - Google Patents
Tappet for actuating a switching element Download PDFInfo
- Publication number
- EP1997121B1 EP1997121B1 EP06761805A EP06761805A EP1997121B1 EP 1997121 B1 EP1997121 B1 EP 1997121B1 EP 06761805 A EP06761805 A EP 06761805A EP 06761805 A EP06761805 A EP 06761805A EP 1997121 B1 EP1997121 B1 EP 1997121B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plunger
- tappet
- elastic element
- position switch
- elastic
- 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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- 238000009434 installation Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 abstract description 2
- 230000037431 insertion Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
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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
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/12—Push-buttons
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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
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
- H01H13/18—Operating parts, e.g. push-button adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
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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
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
- H01H13/18—Operating parts, e.g. push-button adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
- H01H13/186—Operating parts, e.g. push-button adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift wherein the pushbutton is rectilinearly actuated by a lever pivoting on the housing of the switch
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2229/00—Manufacturing
- H01H2229/042—Snap coupling; Snap mounting
Definitions
- the invention relates to a plunger for actuating a switching element, wherein the plunger has at least one stop for biasing against the actuating direction by means of at least one elastic element. Furthermore, the invention relates to a switch, in particular position or safety switch, with at least one switching element and at least one actuating element of the switching element plunger of the aforementioned type.
- Such a position switch is used in electromechanical switching devices.
- the electromechanical switching devices are used to monitor protective devices, such as safety doors or protective grids, or to monitor the movement of machine parts.
- protective devices such as safety doors or protective grids
- switches or plungers contained therein are usable wherever one or more switching elements by an actuating movement, for example, a drive or an actuating force is triggered.
- Possible fields of application include safety technology, automation technology, building and domestic appliance technology. It is also conceivable use in vehicles, aircraft or ships.
- switches in particular position and safety switches, consist of a switch housing with an actuator mounted thereon and also referred to as a drive.
- This actuator is at least partially, for example designed as a plunger or roller tappet and is used for the mechanical actuation of a standing in operative connection switching element or switching element.
- the switch housing is used to protect against environmental influences.
- the housing offers the mounting surface for the drive or the drive head.
- a mechanical connection between the drive head and the switching element is realized by a plunger, which is usually axially displaceably mounted in the housing has two end positions. A first end position is a starting position or basic position. A second end position is the maximum required end position.
- Tappets are usually either molded from plastic, turned or milled from metal, or made of another material.
- Position switches are usually operated with several restoring forces, usually in the form of springs.
- Typical are return springs in the drive head of the position switch, which move back, for example, a pivot lever after the operation back to the unactuated position.
- a plunger recoil spring is well known, which drives back the plunger and ultimately acts on components of the drive head.
- An additional restoring force is achieved by a return spring acting on a slider of the switching element.
- the aforementioned three restoring forces add up and counteract an actuation movement.
- the partially mounted in a return spring plunger limited due to the technical circumstances, the back pressure, and since this design is small even with switching element return springs, a waiver of the return spring in the drive head is not possible.
- the force conversion in the drive head continues to be disadvantageous.
- the positioning of the return spring around the plunger around proves to be problematic because it can jump out of the drive head for mounting the drive head. Furthermore, there is a risk that the drive scissor spring collided with sealing arrangements that are intended to protect the switch from environmental influences, in particular moisture, and to damage or even destroy them. These sealing arrangements include, for example, so-called membranes.
- the invention has for its object to provide a technical teaching that leads to a more compact and user-friendly switch.
- the plunger for actuating a switching element at least one stop for biasing against the actuation direction.
- the bias is achieved by means of at least one elastic element.
- the stop is intended to prevent movement of the plunger beyond the basic position of the plunger and to transmit the force to a housing or a housing part. If the plunger to be stored in the drive head, the stop may be provided for transmitting power to one or more components of the drive head.
- the elastic element can be countered with a device for restraining either in the drive head or in the housing or housing part.
- the plunger has an interior for at least partially receiving the elastic element.
- the elastic Element acts on the plunger and on the retention device.
- the elastic element pushes the plunger against the stop, the force of the elastic element acts on the housing, the housing part or a component of the drive head. If the plunger is not in the basic position, the elastic element has a restoring effect on the plunger and also on the actuating movement. It is advantageous that the plunger volume is used for the addition of a restoring force effect, and thus saves space within the housing. The space thus gained can be used elsewhere. For example, the use of an inner elastic element and an outer elastic element is conceivable, wherein an increased restoring force effect is achieved. In this case, if necessary, an additional spring in the drive head superfluous, which was previously used for spring force increase. The space thus obtained can be used for other electrical and / or mechanical purposes. Alternatively, the switch can be made smaller.
- An advantageous embodiment is a plunger which has an actuating region for mechanical actuation, in particular by a drive head.
- the use of the plunger is basically possible without a drive head, if an object, such as a door or flap, can be used directly for operation. If such an application is not possible, the use of a drive head offers.
- one or more actuation areas on the plunger are conceivable, or else actuation areas which are adapted in accordance with the force effects of a drive head or another actuation mechanism. This can affect the shape and / or the material of the operating area.
- a rounded actuating region is advantageous if the plunger is to be used in conjunction with different drive heads, which in particular have different directions of action. Also conceivable are smooth surfaces which are aligned perpendicular to the direction of actuation.
- An advantageous embodiment has an elastic element, which is designed as a spring, as a membrane or as a compressible body.
- the elastic element can be snapped or trapped in the housing or on the housing part. In this case, it is secured against falling out during assembly or replacement of a drive head.
- the plunger is provided for holding, shielding and / or protecting the elastic element.
- the fact that the plunger completely shields the elastic element for example, it is possible that the elastic element is optimally protected against environmental influences.
- a spring made of metal can be protected against corrosion.
- the plunger may be provided for guiding the elastic element.
- the plunger is at least partially made of metal and / or plastic executable. This can be turned back to the particular application, so for example, in a corrosion-prone application to choose the plastic as the relevant material, whereas the metal may be more advantageous in very hot locations.
- the plunger in particular by means of holding elements, is provided for clamping the elastic element during the installation of the plunger.
- an installation of the plunger including the elastic member from outside the housing, that is without having to uninstall the housing take place.
- the elastic range is going to be that way deformed, that the plunger including elastic element in the housing or the leading elements of the housing is inserted.
- An uninstall of the ram can be achieved by a similar simple or user-friendly way.
- the plunger is easily removable from the housing.
- the plunger for clamping the elastic element on holding elements which are provided for clamping the elastic member and ensure that during deinstallation or installation of the plunger, the elastic element remains in the interior, or even compressed in the interior remains ,
- FIG. 1 shows a sectional view of a first embodiment of a plunger 10 in the installed state.
- the plunger 10 shown includes an elastic element 5, which is designed as a compression spring, and further comprises an actuating portion 3 for actuating the plunger 10 by a not shown drive head and active surfaces 2 for actuating a switching unit or a switching element 1 by the plunger 10.
- the actuating direction the plunger 10 is directed from top to bottom.
- the elastic element 5 engages both on the device 8 for restraint, as well as on an inner side of the plunger 10.
- the plunger 10 is in the unactuated initial state (home position). This means that the restoring force of the elastic element 5 is guided by the stops 4 on the holder 7 of the housing.
- the elastic element 5 is stressed and the restoring force is transmitted to the actuation element (not shown) via the actuation region 3.
- the plunger 10 moves when actuated in the housing interior, which is guided by the holder 7 of the housing.
- the elastic element 5 is guided by the inside of the plunger 10 and shielded by the plunger 10 to the outside.
- the elastic element 5 is arranged only partially within the plunger 10. This is advantageous if a particularly long compression spring is provided as an elastic element 5 for the management of the restoring forces. In this case, the device 8 for retaining the elastic member 5 in the FIG. 1 continue to install within the housing.
- FIG. 2 shows a three-dimensional view of the plunger 10 of the first embodiment.
- actuating portion 3 is designed as a substantially hemispherical surface.
- other shapes conceivable and possibly useful.
- flattened, partially rounded or holding elements having actuation areas are conceivable.
- the plunger 10 is provided for partially receiving an elastic member 5, since the elastic member 5 extends to the vicinity of the stops 4.
- the stops 4 are located at the end of the elastic regions 6, which are executed hook-like.
- the number of elastic regions 6 and the stops 4 can be varied. Two are shown, however, depending on the snapping ability or holding ability to be achieved, a plurality of elastic regions 6 or a plurality of stops 4 may be provided.
- the hook form is not obligatory.
- FIG. 3 shows a three-dimensional view of a plunger of a second embodiment.
- the elastic regions 6 have substantially more material and cause a stronger snapping attitude.
- a larger area of the stops 4 prevents an unwanted removal of the plunger from the housing or housing part sustainable than in the first embodiment.
- FIG. 4 shows a partially cut three-dimensional view of a position switch with drive head 9.
- the drive head 9 is provided for actuating the plunger 11, which contains the elastic element 12, leads and on the same the operating force passes.
- the elastic element 12 is countered with a device 13 for retaining the elastic element 12.
- the device 13 is thus an integrally formed part of the housing 15 of the position switch, which is provided for receiving a switching element 1.
- the plunger 11 is executed with an undercut. The undercut of the plunger 11 prevents a local collision with the device 13 for retention in the installation process.
- FIG. 5 shows a partially sectioned view of a position switch with a drive head 14. The comments on FIG. 4 apply accordingly.
- FIG. 5 illustrates that the plunger 11 can be operated by further drive heads, for example by the drive head 14 shown.
- the drive head 14 is in direct operative connection with the switching element 1. This force effect is transmitted from the plunger 11 positively to the switching element 1.
- the drive head 14 is expediently used in force actions directed substantially along the ram direction.
- the switching element may comprise a plurality of switching units, such as normally closed contact based switching units.
- FIG. 6 shows a sectional view of the plunger 10 of the first embodiment in a first assembly step.
- the plunger 10 is located outside of the holder 7 of the housing.
- the plunger 10 houses the compressed, elastic element 5, which by elastic bending of the elastic Areas 6 is kept in a compressed position.
- the stress of the elastic regions 6 is caused by an external force by the installer and is in FIG. 6 indicated by the arrows shown.
- the active surfaces 2 are thus approximated to each other and allow the same due to the smaller extension of the plunger 10 in the holder. 7
- the lower ends of the elastic region 6 latch under the holder 7 in such a way that the stops 4 engage below the holder 7.
- the compressed, elastic element 5 relaxes in such a way that it acts on the plunger 10, but also on the device 8 for retaining the elastic element 5.
- FIG. 7 shows a sectional view of the plunger 10 of the first embodiment in a second assembly step.
- the plunger 10 is taken at its elastic regions 6 and the elastic element 5 and already partially inserted into the holder 7.
- the action of the installer on the elastic regions 6 is no longer necessary, since the holder 7 is already able to leave the elastic regions 6 in the claimed position.
- the elastic element 5 remains in the compressed state.
- the plunger 10 reaches the position of the snap. In this case, the stress of the elastic regions 6 decreases and the elastic element 5 expands as far as the device 13 for retaining the elastic element 5.
- the plunger 10 After snapping the plunger 10 is in the starting position, as shown FIG. 1 known. In the position shown there, the plunger 10 is operable.
- the invention relates to a plunger for actuating a switching element, in particular for use in a position or safety switch, wherein the plunger has at least one stop for biasing by means of at least one elastic element.
- the plunger has at least one stop for biasing by means of at least one elastic element.
- the plunger according to the invention has an interior for at least partially receiving the elastic element, whereby the space around the plunger around for other components is free. In addition, this results in a simpler installation and an advantageous protection of the elastic element.
Landscapes
- Push-Button Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Brushes (AREA)
- Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
- Multiple-Way Valves (AREA)
Abstract
Description
Die Erfindung betrifft einen Stößel zur Betätigung eines Schaltelements, wobei der Stößel mindestens einen Anschlag zur Vorspannung entgegen der Betätigungsrichtung mittels mindestens eines elastischen Elements aufweist. Des Weiteren betrifft die Erfindung einen Schalter, insbesondere Positions-oder Sicherheitsschalter, mit mindestens einem Schaltelement und mindestens einem das Schaltelement betätigenden Stößel der eingangs genannten Art.The invention relates to a plunger for actuating a switching element, wherein the plunger has at least one stop for biasing against the actuating direction by means of at least one elastic element. Furthermore, the invention relates to a switch, in particular position or safety switch, with at least one switching element and at least one actuating element of the switching element plunger of the aforementioned type.
Ein derartiger Positionsschalter kommt in elektromechanischen Schaltgeräten zum Einsatz. Beispielhaft sei die Verwendung in Positionsschaltern oder Sicherheitsschaltern genannt.Such a position switch is used in electromechanical switching devices. As an example, the use in position switches or safety switches called.
Die elektromechanischen Schaltgeräte dienen unter anderem zur Überwachung von Schutzeinrichtungen, wie beispielsweise Sicherheitstüren oder Schutzgitter, oder auch zur Überwachung der Bewegung von Maschinenteilen. Grundsätzlich sind derartige Schalter bzw. darin enthaltene Stößel überall dort verwendbar, wo ein oder mehrere Schaltelemente durch eine Betätigungsbewegung, durch beispielsweise einen Antrieb oder eine betätigende Kraft auszulösen ist. Als mögliche Anwendungsgebiete seien Sicherheitstechnik, Automatisierungstechnik, Gebäude- und Hausgerätetechnik genannt. Denkbar ist weiterhin der Einsatz in Fahrzeugen, Flugzeugen oder Schiffen.Among other things, the electromechanical switching devices are used to monitor protective devices, such as safety doors or protective grids, or to monitor the movement of machine parts. In principle, such switches or plungers contained therein are usable wherever one or more switching elements by an actuating movement, for example, a drive or an actuating force is triggered. Possible fields of application include safety technology, automation technology, building and domestic appliance technology. It is also conceivable use in vehicles, aircraft or ships.
Im Wesentlichen bestehen derartige Schalter, insbesondere Positions- und Sicherheitsschalter, aus einem Schaltergehäuse mit einem daran angebrachten, und auch als Antrieb bezeichneten, Betätiger. Dieser Betätiger ist zumindest teilweise, beispielsweise als Stößel oder Rollenstößel ausgebildet und wird zur mechanischen Betätigung eines in Wirkverbindung stehendes Schaltglieds oder Schaltelements benutzt.Essentially, such switches, in particular position and safety switches, consist of a switch housing with an actuator mounted thereon and also referred to as a drive. This actuator is at least partially, for example designed as a plunger or roller tappet and is used for the mechanical actuation of a standing in operative connection switching element or switching element.
Bei Positions- und Sicherheitsschaltern wird das Schaltergehäuse zum Schutz gegen Umwelteinflüsse verwendet. Gleichzeitig bietet das Gehäuse die Montagefläche für den Antrieb bzw. den Antriebskopf. Eine mechanische Verbindung zwischen Antriebskopf und Schaltelement wird durch einen Stößel realisiert, welcher im Gehäuse meist axial verschiebbar gelagert ist zwei Endlagen aufweist. Eine erste Endlage ist eine Ausgangslage oder auch Grundstellung. Eine zweite Endlage ist die maximal benötigte Endlage.For position and safety switches, the switch housing is used to protect against environmental influences. At the same time, the housing offers the mounting surface for the drive or the drive head. A mechanical connection between the drive head and the switching element is realized by a plunger, which is usually axially displaceably mounted in the housing has two end positions. A first end position is a starting position or basic position. A second end position is the maximum required end position.
Stößel sind in der Regel entweder aus Kunststoff gespritzt, aus Metall gedreht oder gefräst, oder aus einem anderweitigen Material gefertigt.Tappets are usually either molded from plastic, turned or milled from metal, or made of another material.
Positionsschalter werden in der Regel mit mehreren Rückstellkräften, meist in Form von Federn, betrieben. Üblich sind Rückstellfedern im Antriebskopf des Positionsschalters, die beispielsweise einen Schwenkhebel nach der Betätigung wieder in die unbetätigte Position zurückbewegen. Weiter ist eine den Stößel rücktreibende Feder allgemein bekannt, die den Stößel zurücktreibt und letztlich auch auf Bauteile des Antriebskopfes wirkt. Eine zusätzliche Rückstellungskraft wird durch eine Rückdruckfeder erreicht, die auf einen Schieber des Schaltelements wirkt. Die zuvor genannten drei Rückstellungskräfte (gegebenenfalls auch mehr) summieren sich und wirken einer Betätigungsbewegung entgegen. Der teilweise in einer Rückdruckfeder angebrachte Stößel limitiert aufgrund der technischen Umstände die Rückdruckkraft, und da auch bei Schaltelementrückdruckfedern diese bauartbedingt klein ist, ist ein Verzicht auf die Rückstellfeder im Antriebskopf nicht möglich. Zudem wirkt sich die Kraftumsetzung im Antriebskopf weiter nachteilig aus.Position switches are usually operated with several restoring forces, usually in the form of springs. Typical are return springs in the drive head of the position switch, which move back, for example, a pivot lever after the operation back to the unactuated position. Further, a plunger recoil spring is well known, which drives back the plunger and ultimately acts on components of the drive head. An additional restoring force is achieved by a return spring acting on a slider of the switching element. The aforementioned three restoring forces (possibly even more) add up and counteract an actuation movement. The partially mounted in a return spring plunger limited due to the technical circumstances, the back pressure, and since this design is small even with switching element return springs, a waiver of the return spring in the drive head is not possible. In addition, the force conversion in the drive head continues to be disadvantageous.
Des Weiteren erweist sich die Positionierung der Rückdruckfeder um den Stößel herum als problematisch, da zur Montage des Antriebskopfes diese aus dem Antriebskopf herausspringen kann. Weiter besteht die Gefahr, dass die Antriebskopfrückdruckfeder mit Dichtungsanordnungen kollidiert, die dafür gedacht sind, den Schalter vor Umwelteinflüssen, insbesondere Feuchtigkeit, zu schützen, und diese zu beschädigen oder sogar zu zerstören. Zu diesen Dichtungsanordnungen zählen beispielsweise so genannte Membranen.Furthermore, the positioning of the return spring around the plunger around proves to be problematic because it can jump out of the drive head for mounting the drive head. Furthermore, there is a risk that the drive scissor spring collided with sealing arrangements that are intended to protect the switch from environmental influences, in particular moisture, and to damage or even destroy them. These sealing arrangements include, for example, so-called membranes.
Aus Siemens Technische Informationen LV1T 2006 ist ein Positions- oder Sicherheitsschalter bekannt (MLFB 3SE3120-1D), der zusätzlich zur Schaltelementrückdruckfeder eine Antriebskopfrückdruckfeder aufweist, die um den Stößel herum gelagert ist. Der vorgeschlagene Schalter weist die oben genannten Nachteile auf.From Siemens Technical Information LV1T 2006 a position or safety switch is known (MLFB 3SE3120-1D), which in addition to the shift element return spring has a drive head spring which is mounted around the pushrod. The proposed switch has the above-mentioned disadvantages.
Der Erfindung liegt die Aufgabe zugrunde, eine technische Lehre anzugeben, die zu einem kompakteren und benutzerfreundlicheren Schalter führt.The invention has for its object to provide a technical teaching that leads to a more compact and user-friendly switch.
Diese Aufgabe wird bei einem Positionsschalter der eingangs genannten Art dadurch gelöst, dass der Stößel des Positionsschalters einen Innenraum zur zumindest teilweisen Aufnahme des elastischen Elements aufweist.This object is achieved with a position switch of the type mentioned above in that the plunger of the position switch has an interior for at least partially receiving the elastic element.
Erfindungsgemäß weist der Stößel zur Betätigung eines Schaltelements mindestens einen Anschlag zur Vorspannung entgegen der Betätigungsrichtung auf. Die Vorspannung wird mittels mindestens eines elastischen Elementes erzielt. Der Anschlag ist dafür vorgesehen, eine Bewegung des Stößels über die Grundstellung des Stößels hinaus zu verhindern und die Kraftwirkung auf ein Gehäuse oder ein Gehäuseteil zu übertragen. Sollte der Stößel im Antriebskopf gelagert sein, so kann der Anschlag zur Kraftübertragung auf ein oder mehrere Bauteile des Antriebskopfes vorgesehen sein. Erfindungsgemäß kann das elastische Element mit einer Vorrichtung zur Rückhaltung entweder im Antriebskopf oder im Gehäuse bzw. Gehäuseteil gekontert sein. Der Stößel weist einen Innenraum zur zumindest teilweisen Aufnahme des elastischen Elementes auf. Das elastische Element wirkt auf den Stößel und auf die Vorrichtung zur Rückhaltung. Drückt das elastische Element den Stößel auf den Anschlag, so wirkt die Kraft des elastischen Elements auf das Gehäuse, das Gehäuseteil bzw. ein Bauteil des Antriebskopfes. Befindet sich der Stößel nicht in Grundstellung, so wirkt das elastische Element rückstellend auf den Stößel und auch auf die Betätigungsbewegung. Vorteilhaft ist, dass das Stößelvolumen für die Ergänzung einer Rückstellkraftwirkung verwendet wird, und somit innerhalb des Gehäuses platzsparend wirkt. Der so gewonnene Raum kann anderweitig genutzt werden. Beispielsweise ist der Einsatz eines innen liegenden elastischen Elementes und eines außen liegenden elastischen Elementes denkbar, wobei eine erhöhte Rückstellkraftwirkung erzielt wird. Hierbei wird gegebenenfalls eine zusätzliche Feder im Antriebskopf überflüssig, die bisher zur Federkrafterhöhung eingesetzt wurde. Der so gewonnene Raum kann für anderweitige elektrische und/oder mechanische Zwecke verwendet werden. Alternativ kann der Schalter kleiner ausgelegt werden.According to the invention, the plunger for actuating a switching element at least one stop for biasing against the actuation direction. The bias is achieved by means of at least one elastic element. The stop is intended to prevent movement of the plunger beyond the basic position of the plunger and to transmit the force to a housing or a housing part. If the plunger to be stored in the drive head, the stop may be provided for transmitting power to one or more components of the drive head. According to the invention, the elastic element can be countered with a device for restraining either in the drive head or in the housing or housing part. The plunger has an interior for at least partially receiving the elastic element. The elastic Element acts on the plunger and on the retention device. If the elastic element pushes the plunger against the stop, the force of the elastic element acts on the housing, the housing part or a component of the drive head. If the plunger is not in the basic position, the elastic element has a restoring effect on the plunger and also on the actuating movement. It is advantageous that the plunger volume is used for the addition of a restoring force effect, and thus saves space within the housing. The space thus gained can be used elsewhere. For example, the use of an inner elastic element and an outer elastic element is conceivable, wherein an increased restoring force effect is achieved. In this case, if necessary, an additional spring in the drive head superfluous, which was previously used for spring force increase. The space thus obtained can be used for other electrical and / or mechanical purposes. Alternatively, the switch can be made smaller.
Eine vorteilhafte Ausführungsform ist ein Stößel, der einen Betätigungsbereich zur mechanischen Betätigung, insbesondere durch einen Antriebskopf, aufweist. Der Einsatz des Stößels ist grundsätzlich auch ohne Antriebskopf möglich, wenn ein Objekt, beispielsweise eine Tür oder Klappe, direkt zur Betätigung verwendet werden können. Ist ein derartiger Einsatz nicht möglich bietet sich die Verwendung eines Antriebskopfes an. Hierbei sind eine oder mehrere Betätigungsbereiche am Stößel denkbar, oder auch Betätigungsbereiche die entsprechend den Kraftwirkungen eines Antriebskopfes oder einem anderen betätigenden Mechanismus angepasst sind. Dies kann sich auf die Form und/oder das Material des Betätigungsbereiches auswirken. So ist beispielsweise ein abgerundeter Betätigungsbereich von Vorteil, wenn der Stößel in Verbindung mit verschiedenen Antriebsköpfen, die insbesondere unterschiedliche Wirkungsrichtungen aufweisen, verwendet werden soll. Denkbar sind auch glatte Flächen, die senkrecht zur Betätigungsrichtung ausgerichtet sind.An advantageous embodiment is a plunger which has an actuating region for mechanical actuation, in particular by a drive head. The use of the plunger is basically possible without a drive head, if an object, such as a door or flap, can be used directly for operation. If such an application is not possible, the use of a drive head offers. In this case, one or more actuation areas on the plunger are conceivable, or else actuation areas which are adapted in accordance with the force effects of a drive head or another actuation mechanism. This can affect the shape and / or the material of the operating area. Thus, for example, a rounded actuating region is advantageous if the plunger is to be used in conjunction with different drive heads, which in particular have different directions of action. Also conceivable are smooth surfaces which are aligned perpendicular to the direction of actuation.
Eine vorteilhafte Ausführungsform weist ein elastisches Element auf, welches als Feder, als Membran oder als komprimierbarer Körper ausgeführt ist. Hier kann auf die jeweilige Anwendung Rücksicht genommen werden, bei welchem auf die jeweilige Rückstellungskraft abgestellt wird. Als vorteilhaft erweist sich zudem, wenn das elastische Element im Gehäuse oder am Gehäuseteil verschnappt oder eingeschlossen werden kann. In diesem Fall ist es gegen ein Herausfallen bei der Montage oder dem Auswechseln eines Antriebskopfes gesichert.An advantageous embodiment has an elastic element, which is designed as a spring, as a membrane or as a compressible body. Here, consideration can be given to the respective application, in which the respective restoring force is turned off. It also proves to be advantageous if the elastic element can be snapped or trapped in the housing or on the housing part. In this case, it is secured against falling out during assembly or replacement of a drive head.
Bei einer vorteilhaften Ausführungsform ist der Stößel zum Halten, Abschirmen und/oder Schützen des elastischen Elementes vorgesehen. Insbesondere dadurch, dass der Stößel das elastische Element beispielsweise vollkommen abschirmt, ist es möglich, dass das elastische Element gegen Umwelteinflüsse optimal geschützt ist. So ist beispielsweise eine Feder aus Metall gegen Korrosion schützbar. Des Weiteren kann der Stößel zum Führen des elastischen Elementes vorgesehen sein. Dadurch wird nicht nur das elastische Element, sondern auch andere Bauteile vor dem elastischen Element, beispielsweise im Sinne einer Kollision, geschützt.In an advantageous embodiment, the plunger is provided for holding, shielding and / or protecting the elastic element. In particular, the fact that the plunger completely shields the elastic element, for example, it is possible that the elastic element is optimally protected against environmental influences. For example, a spring made of metal can be protected against corrosion. Furthermore, the plunger may be provided for guiding the elastic element. As a result, not only the elastic element, but also other components in front of the elastic element, for example in the sense of a collision, protected.
Vorteilhafterweise ist der Stößel zumindest teilweise aus Metall und/oder Kunststoff ausführbar. Hierbei kann wieder auf die jeweilige Anwendung abgestellt werden, so ist beispielsweise in einer korrosionsanfälligen Anwendung der Kunststoff als relevantes Material zu wählen, wohingegen das Metall evtl. bei sehr heißen Einsatzorten vorteilhafter ist.Advantageously, the plunger is at least partially made of metal and / or plastic executable. This can be turned back to the particular application, so for example, in a corrosion-prone application to choose the plastic as the relevant material, whereas the metal may be more advantageous in very hot locations.
Bei einer vorteilhaften Ausführungsform ist der Stößel, insbesondere mittels Halteelementen, zur Klemmung des elastischen Elements während der Installation des Stößels vorgesehen. Insbesondere in Verbindung mit einem elastischen Bereich, der zur vorübergehenden Verformung während der Installation des Stößels vorgesehen ist, kann eine Installation des Stößels inklusive des elastischen Elements von außerhalb des Gehäuses, das heißt ohne das Gehäuse deinstallieren zu müssen, stattfinden. Der elastische Bereich wird dahingehend verformt, dass der Stößel inklusive elastischem Element in das Gehäuse bzw. die führenden Elemente des Gehäuses einführbar ist. Durch eine anschließende Verschnappung wird die Beanspruchung des elastischen Bereichs gemindert und ein Herausfallen des Stößels entgegen der Installationsrichtung verhindert. Eine Deinstallation des Stößels kann durch eine ähnlich einfache bzw. benutzerfreundliche Weise erreicht werden. So kann, beispielsweise durch Finger oder ein entsprechendes Werkzeug des Monteurs, der oder die elastischen Bereiche des Stößels beansprucht werden, so dass die Verschnappung des Stößels durch die Beanspruchung des elastischen Bereiches rückgängig gemacht wird. In diesem Zustand ist der Stößel ohne Weiteres aus dem Gehäuse entfernbar.In an advantageous embodiment, the plunger, in particular by means of holding elements, is provided for clamping the elastic element during the installation of the plunger. In particular, in conjunction with an elastic portion which is provided for temporary deformation during the installation of the plunger, an installation of the plunger including the elastic member from outside the housing, that is without having to uninstall the housing, take place. The elastic range is going to be that way deformed, that the plunger including elastic element in the housing or the leading elements of the housing is inserted. By a subsequent snapping the stress of the elastic region is reduced and prevented falling out of the plunger against the installation direction. An uninstall of the ram can be achieved by a similar simple or user-friendly way. Thus, for example, by fingers or a corresponding tool of the mechanic, or the elastic regions of the plunger are claimed, so that the snapping of the plunger is reversed by the stress of the elastic region. In this state, the plunger is easily removable from the housing.
Bei einer vorteilhaften Ausführungsform weist der Stößel zur Klemmung des elastischen Elements Halteelemente auf, die zur Klemmung des elastischen Elements vorgesehen sind und dafür Sorge tragen, dass während der Deinstallation bzw. Installation des Stößels das elastische Element im Innenraum verbleibt, oder sogar komprimiert im Innenraum verbleibt.In an advantageous embodiment, the plunger for clamping the elastic element on holding elements, which are provided for clamping the elastic member and ensure that during deinstallation or installation of the plunger, the elastic element remains in the interior, or even compressed in the interior remains ,
Weitere vorteilhafte Ausbildungen und bevorzugte Weiterbildungen der Erfindung sind der Figurenbeschreibung.und/oder den Unteransprüchen zu entnehmen.Further advantageous embodiments and preferred developments of the invention are the Figurenbeschreibung.und / refer to the dependent claims.
Im Folgenden wird die Erfindung anhand der in den Figuren dargestellten Ausführungsbeispiele näher beschrieben und erläutert.In the following the invention will be described and explained in more detail with reference to the embodiments illustrated in the figures.
Es zeigen:
- FIG 1
- eine geschnittene Ansicht eines ersten Ausführungsbeispiels eines Stößels im installierten Zustand,
- FIG 2
- eine dreidimensionale Ansicht des Stößels aus
FIG 1 , - FIG 3
- eine dreidimensionale Ansicht eines Stößels eines zweiten Ausführungsbeispiels,
- FIG 4
- eine teilweise geschnittene Ansicht eines Positionsschalters mit Antriebskopf,
- FIG 5
- eine teilweise geschnittene Ansicht eines Positionsschalters mit Antriebskopf,
- FIG 6
- eine geschnittene Ansicht des Stößels des ersten Ausführungsbeispiels in einem ersten Montageschritt, und
- FIG 7
- eine geschnittene Ansicht des Stößels des ersten Ausführungsbeispiels in einem zweiten Montageschritt.
- FIG. 1
- a sectional view of a first embodiment of a plunger in the installed state,
- FIG. 2
- a three-dimensional view of the plunger
FIG. 1 . - FIG. 3
- a three-dimensional view of a plunger of a second embodiment,
- FIG. 4
- a partially sectioned view of a position switch with drive head,
- FIG. 5
- a partially sectioned view of a position switch with drive head,
- FIG. 6
- a sectional view of the plunger of the first embodiment in a first assembly step, and
- FIG. 7
- a sectional view of the plunger of the first embodiment in a second assembly step.
Vorteilhafterweise wird das elastische Element 5 von der Innenseite des Stößels 10 geführt und durch den Stößel 10 nach außen hin abgeschirmt.Advantageously, the
Es ist ebenfalls möglich, dass das elastische Element 5 nur teilweise innerhalb des Stößels 10 angeordnet ist. Dies ist dann von Vorteil, wenn für das Management der Rückstellkräfte eine besonders lange Druckfeder als elastisches Element 5 vorgesehen ist. In diesem Fall ist die Vorrichtung 8 zur Rückhaltung des elastischen Elements 5 in der
Wie man aus
Der Antriebskopf 14 wird sinnvollerweise bei im Wesentlichen entlang der Stößelrichtung gerichteten Kraftwirkungen eingesetzt.The
Das Schaltelement kann mehrere Schalteinheiten aufweisen, beispielsweise Öffnerkontakt basierte Schalteinheiten.The switching element may comprise a plurality of switching units, such as normally closed contact based switching units.
Beim Einrastvorgang verrasten die unteren Enden des elastischen Bereiches 6 unter der Halterung 7 in der Art, dass die Anschläge 4 unterhalb der Halterung 7 angreifen. Während des Vorganges entspannt sich das komprimierte, elastische Element 5 dahingehend, dass es am Stößel 10, aber auch an der Vorrichtung 8 zur Rückhaltung des elastischen Elements 5 angreift.During the latching process, the lower ends of the
Nach Verschnappung befindet sich der Stößel 10 in der Ausgangsstellung, wie aus
Zusammenfassend betrifft die Erfindung einen Stößel zur Betätigung eines Schaltelements, insbesondere zur Verwendung in einem Positions- oder Sicherheitsschalter, wobei der Stößel mindestens einen Anschlag zur Vorspannung mittels mindestens eines elastischen Elements aufweist. Bisher führte der Einsatz eines derartigen Stößels innerhalb eines Schalters zu einem hohen Aufwand an Bauraum innerhalb des Schalters. Der erfindungsgemäße Stößel weist einen Innenraum zur zumindest teilweisen Aufnahme des elastischen Elements auf, womit der Bauraum um den Stößel herum für andere Bauteile frei wird. Zudem ergibt sich dadurch eine einfachere Montage und ein vorteilhafter Schutz des elastischen Elements.In summary, the invention relates to a plunger for actuating a switching element, in particular for use in a position or safety switch, wherein the plunger has at least one stop for biasing by means of at least one elastic element. Previously, the use of such a plunger within a switch to a high cost of space within the switch. The plunger according to the invention has an interior for at least partially receiving the elastic element, whereby the space around the plunger around for other components is free. In addition, this results in a simpler installation and an advantageous protection of the elastic element.
Claims (10)
- Position switch, especially safety switch, with at least one switching element (1) and at least one tappet (10, 11) actuating the switching element (1), with the tappet (10, 11) having at least one stop (4) for pretensioning against the actuation direction by means of at least one elastic element (5, 12) and an interior space for at least partly accommodating the elastic element (5, 12), characterised in that the tappet (10, 11) actuating the switching element (1) has an undercut which is designed to prevent a collision with a device (8, 13) for holding back the elastic element (5, 12).
- Position switch according to claim 1, with the tappet (10, 11) having an actuation area (3) provided for mechanical actuation, especially by a drive head (9, 14).
- Position switch according to one of the preceding claims, with the elastic element (5, 12) being a spring, a membrane or a compressible body.
- Position switch according to one of the preceding claims, with the tappet (10, 11) being provided for clamping the elastic element (5, 12), especially by means of at least one retaining element, during the installation of the tappet (10, 11).
- Position switch according to one of the preceding claims, with the tappet (10, 11) being provided for holding, shielding and/or protecting the elastic element (5, 12).
- Position switch according to one of the preceding claims, with the tappet (10, 11) consisting at least partly of metal and/or plastic.
- Position switch according to one of the preceding claims, with the tappet (10, 11) having at least one elastic area (6) for temporary deformation to install the tappet (10, 11).
- Position switch according to claim 7, with the elastic area (6) being provided for latching and or snapping-in the tappet (10, 11).
- Position switch according to one of the preceding claims, with the position switch having a drive mechanism, especially a drive head (9, 14) for actuating the tappet (10, 11).
- Switching device, with the switching device having a position switch according to one or claims 1 to 9.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2006/001227 WO2008009243A1 (en) | 2006-07-17 | 2006-07-17 | Tappet for actuating a switching element |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1997121A1 EP1997121A1 (en) | 2008-12-03 |
EP1997121B1 true EP1997121B1 (en) | 2012-04-18 |
Family
ID=37714314
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06761805A Active EP1997121B1 (en) | 2006-07-17 | 2006-07-17 | Tappet for actuating a switching element |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1997121B1 (en) |
CN (1) | CN101438362B (en) |
AT (1) | ATE554491T1 (en) |
DE (1) | DE112006004027A5 (en) |
WO (1) | WO2008009243A1 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2547765A (en) * | 1948-11-05 | 1951-04-03 | W L Maxson Corp | Switch actuator |
DE3240940A1 (en) * | 1982-11-05 | 1984-05-10 | Wilhelm Ruf KG, 8000 München | KEY FOR CLOSING ELECTRICAL CONTACTS |
DE4447176A1 (en) * | 1994-12-30 | 1996-07-04 | Lira Elektrotechnische Fabrik | Anti-vandalism type pushbutton actuated door bell system |
-
2006
- 2006-07-17 CN CN200680054591.4A patent/CN101438362B/en active Active
- 2006-07-17 DE DE112006004027T patent/DE112006004027A5/en not_active Withdrawn
- 2006-07-17 EP EP06761805A patent/EP1997121B1/en active Active
- 2006-07-17 WO PCT/DE2006/001227 patent/WO2008009243A1/en active Application Filing
- 2006-07-17 AT AT06761805T patent/ATE554491T1/en active
Also Published As
Publication number | Publication date |
---|---|
DE112006004027A5 (en) | 2009-06-10 |
EP1997121A1 (en) | 2008-12-03 |
ATE554491T1 (en) | 2012-05-15 |
CN101438362A (en) | 2009-05-20 |
CN101438362B (en) | 2013-02-20 |
WO2008009243A1 (en) | 2008-01-24 |
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