EP0476211B1 - Electrical switching unit - Google Patents
Electrical switching unit Download PDFInfo
- Publication number
- EP0476211B1 EP0476211B1 EP90710023A EP90710023A EP0476211B1 EP 0476211 B1 EP0476211 B1 EP 0476211B1 EP 90710023 A EP90710023 A EP 90710023A EP 90710023 A EP90710023 A EP 90710023A EP 0476211 B1 EP0476211 B1 EP 0476211B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrical switching
- switching unit
- switching elements
- wheel
- segment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/0214—Hand-held casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/001—Thumb wheel switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
- H01H9/041—Casings hermetically closed by a diaphragm through which passes an actuating member
-
- 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
- H01H3/0213—Combined operation of electric switch and variable impedance, e.g. resistor, capacitor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
Definitions
- the invention relates to an electrical switching unit in a handheld control device, in which external operating elements are connected to internal electrical switching elements.
- a handheld control device in which external operating elements are connected to internal electrical switching elements.
- Such a device is known from US-A-3 654 415.
- a push-button or lever mechanism is provided between the external control elements and the internal switching elements. It is problematic to seal the internal switching elements from the external operating elements. This is done through complicated seals.
- the invention seeks to remedy this.
- the invention described in the claims solves the task of optimizing the connecting element between the external control element and the internal switching element so that a simple seal is possible and a secure seal is ensured.
- the wheel segment is provided as an operating part.
- the wheel segment is connected to the deflection wheel via the connecting rod.
- the connecting rod is thin. It can therefore be sealed by a simple sealing element.
- the deflection wheel has at least one translation segment, via which continuously adjustable switching elements are driven.
- the invention therefore not only enables the switching elements to be switched on and off, but also the stepless or gradual adjustment of switching elements.
- FIG. 1 An embodiment of the invention is shown in the drawing and is described in detail below.
- the single figure shows a schematic longitudinal section of an electrical switching unit.
- a wheel segment 4 is pivotally mounted in a housing 1, which can be the housing of a pendant switch for a crane system.
- a connecting rod 8 is mounted at a distance from the pivot axis 41 of the wheel segment 4.
- the connecting rod passes through an end wall 11 of the housing 1.
- the connecting rod 8 is sealed to the outside on the end wall 11, here in relation to a trough 12 in which the wheel segment 4 is mounted.
- a simple sealing bellows 5 is provided for sealing.
- the end of the connecting rod 8 facing away from the wheel segment 4 is connected to a deflection wheel 3.
- the deflection wheel 3 is pivoted about its axis 31 in proportion to the pivoting angle of the wheel segment 4.
- Electrical switching elements for example a microswitch 7, can be switched both at the end of the pivoting movement and in intermediate positions via the deflection wheel 3 and a translation segment 2 (switching cams).
- the deflection wheel 3 thus enables switching elements to be adjusted continuously or in stages, in the exemplary embodiment a potentiometer 6, the drive angle of which is greater than the adjustment angle of the wheel segment 4.
- the invention is applicable to all electrical switching units in which internal switching elements are actuated mechanically via external operating elements; especially for pendant switches for crane systems.
Landscapes
- Mechanisms For Operating Contacts (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
Die Erfindung bezieht sich auf eine elektrische Schalteinheit in einem Handbediengerät, bei dem außenliegende Bedienelemente mit innenliegenden elektrischen Schaltelementen verbunden sind. Eine derartige Vorrichtung ist aus der US-A-3 654 415 bekannt.The invention relates to an electrical switching unit in a handheld control device, in which external operating elements are connected to internal electrical switching elements. Such a device is known from US-A-3 654 415.
Bei bekannten Handbediengeräten ist zwischen den außenliegenden Bedienelementen und den innenliegenden Schaltelementen ein Druckknopf- oder Hebelmechanismus vorgesehen. Problematisch ist, die innenliegenden Schaltelemente gegenüber den außenliegenden Bedienelementen abzudichten. Dies geschieht durch komplizierte Dichtungen.In known manual control devices, a push-button or lever mechanism is provided between the external control elements and the internal switching elements. It is problematic to seal the internal switching elements from the external operating elements. This is done through complicated seals.
Hier will die Erfindung Abhilfe schaffen. Die in den Patentansprüchen beschriebene Erfindung löst die Aufgabe, das Verbindungselement zwischen dem außenliegenden Bedienelement und dem innenliegenden Schaltelement so zu optimieren, daß eine einfache Abdichtung möglich und eine sichere Abdichtung gewährleistet ist.The invention seeks to remedy this. The invention described in the claims solves the task of optimizing the connecting element between the external control element and the internal switching element so that a simple seal is possible and a secure seal is ensured.
Bei der Erfindung ist das Radsegment als Bedienteil vorgesehen. Das Radsegment ist über die Pleuelstange mit dem Umlenkrad verbunden. Die Pleuelstange ist dünn. Sie kann folglich durch ein einfaches Dichtungselement abgedichtet werden.In the invention, the wheel segment is provided as an operating part. The wheel segment is connected to the deflection wheel via the connecting rod. The connecting rod is thin. It can therefore be sealed by a simple sealing element.
In Weiterbildung der Erfindung weist das Umlenkrad mindestens ein Übersetzungssegment auf, über das stetig verstellbare Schaltelemente angetrieben sind. Mit der Erfindung ist also nicht nur das Ein- und Ausschalten der Schaltelemente, sondern auch das stufenlose oder auch stufenweise Verstellen von Schaltelementen möglich.In a further development of the invention, the deflection wheel has at least one translation segment, via which continuously adjustable switching elements are driven. The invention therefore not only enables the switching elements to be switched on and off, but also the stepless or gradual adjustment of switching elements.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend im einzelnen beschrieben. Die einzige Figur zeigt in einem schematischem Längsschnitt eine elektrische Schalteinheit.An embodiment of the invention is shown in the drawing and is described in detail below. The single figure shows a schematic longitudinal section of an electrical switching unit.
In einem Gehäuse 1, bei dem es sich um das Gehäuse eines Hängetasters für eine Krananlage handeln kann, ist ein Radsegment 4 schwenkbar gelagert. Im Abstand von der Schwenkachse 41 des Radsegments 4 ist ein Ende einer Pleuelstange 8 gelagert. Die Pleuelstange durchsetzt eine Stirnwand 11 des Gehäuses 1. An der Stirnwand 11 ist die Pleuelstange 8 nach außen abgedichtet, hier gegenüber einer Mulde 12, in der das Radsegment 4 gelagert ist. Für die Abdichtung ist ein einfacher Dichtungsbalg 5 vorgesehen.A
Das dem Radsegment 4 abgewandte Ende der Pleuelstange 8 ist mit einem Umlenkrad 3 verbunden. Proportional zu dem Schwenkwinkel des Radsegments 4 ist das Umlenkrad 3 um seine Achse 31 geschwenkt. Sowohl am Ende der Schwenkbewegung als auch in Zwischenstellungen sind über das Umlenkrad 3 und ein Übersetzungssegment 2 (Schaltnocken) elektrische Schaltelemente, zum Beispiel ein Mikroschalter 7, schaltbar.The end of the connecting rod 8 facing away from the
Das Umlenkrad 3 ermöglicht so, stufenlos oder stufenweise verstellbar Schaltelemente, im Ausführungsbeispiel ein Potentiometer 6, deren Antriebswinkel größer ist als der Verstellwinkel des Radsegments 4 zu verstellen.The
Die Erfindung ist anwendbar bei allen elektrischen Schalteinheiten, bei denen innenliegende Schaltelemente über außenliegende Bedienelemente mechanisch betätigt werden; insbesondere bei Hängetastern für Krananlagen.The invention is applicable to all electrical switching units in which internal switching elements are actuated mechanically via external operating elements; especially for pendant switches for crane systems.
Claims (2)
- Electrical switching unit within a manually actuated operating device comprising external operating elements connected to internal switching elements, characterized in that a wheel segment (4) acting as external operating element is connected to an internal deflection wheel (3), which on its part is connected to the electrical switching elements (6;7).
- Electrical switching unit according to claim 1, characterized in that the deflection wheel (3) has at least one transmission segment (2), by means of which the switching elements (6) are driven.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59006525T DE59006525D1 (en) | 1990-09-22 | 1990-09-22 | Electrical switching unit. |
EP90710023A EP0476211B1 (en) | 1990-09-22 | 1990-09-22 | Electrical switching unit |
DE9013413U DE9013413U1 (en) | 1990-09-22 | 1990-09-22 | Electrical switching unit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP90710023A EP0476211B1 (en) | 1990-09-22 | 1990-09-22 | Electrical switching unit |
DE9013413U DE9013413U1 (en) | 1990-09-22 | 1990-09-22 | Electrical switching unit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0476211A1 EP0476211A1 (en) | 1992-03-25 |
EP0476211B1 true EP0476211B1 (en) | 1994-07-20 |
Family
ID=40139972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90710023A Expired - Lifetime EP0476211B1 (en) | 1990-09-22 | 1990-09-22 | Electrical switching unit |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0476211B1 (en) |
DE (2) | DE9013413U1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3654415A (en) * | 1970-09-24 | 1972-04-04 | Columbus Mckinnon Corp | Pendant hoist control device |
GB2046525A (en) * | 1979-04-06 | 1980-11-12 | Ml Aviation Co Ltd | Manually operable electric switch |
DE3204423C2 (en) * | 1982-02-09 | 1984-06-28 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Electrical step switch |
US4771145A (en) * | 1987-09-08 | 1988-09-13 | Davis Jr Kenneth E | Light switch extension |
-
1990
- 1990-09-22 DE DE9013413U patent/DE9013413U1/en not_active Expired - Lifetime
- 1990-09-22 DE DE59006525T patent/DE59006525D1/en not_active Expired - Fee Related
- 1990-09-22 EP EP90710023A patent/EP0476211B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59006525D1 (en) | 1994-08-25 |
EP0476211A1 (en) | 1992-03-25 |
DE9013413U1 (en) | 1992-01-23 |
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