EP0275913B1 - Electric switching device - Google Patents

Electric switching device Download PDF

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Publication number
EP0275913B1
EP0275913B1 EP88100378A EP88100378A EP0275913B1 EP 0275913 B1 EP0275913 B1 EP 0275913B1 EP 88100378 A EP88100378 A EP 88100378A EP 88100378 A EP88100378 A EP 88100378A EP 0275913 B1 EP0275913 B1 EP 0275913B1
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EP
European Patent Office
Prior art keywords
switching device
slide
electrical switching
housing
operating element
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
Application number
EP88100378A
Other languages
German (de)
French (fr)
Other versions
EP0275913A3 (en
EP0275913A2 (en
Inventor
Karsten Jüterbock
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.)
Graco Verfahrenstechnik GmbH
Original Assignee
Graco Verfahrenstechnik GmbH
Boellhoff Verbindungstechnik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Graco Verfahrenstechnik GmbH, Boellhoff Verbindungstechnik GmbH filed Critical Graco Verfahrenstechnik GmbH
Priority to AT88100378T priority Critical patent/ATE75072T1/en
Publication of EP0275913A2 publication Critical patent/EP0275913A2/en
Publication of EP0275913A3 publication Critical patent/EP0275913A3/en
Application granted granted Critical
Publication of EP0275913B1 publication Critical patent/EP0275913B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/053—Arrangements for supplying power, e.g. charging power
    • 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
    • H01H3/20—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch wherein an auxiliary movement thereof, or of an attachment thereto, is necessary before the main movement is possible or effective, e.g. for unlatching, for coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches

Definitions

  • the invention relates to an electrical switching device with a switching element arranged in a housing, a trigger element on an actuating member movable relative to the housing and an additional actuating element for making the switching function effective, in particular for spray guns with a switching element arranged in the handle housing and a trigger element provided on the trigger .
  • the actuating element consists of a pivot lever which carries the trigger element and is attached to the trigger. If you pivot the lever into the inactive position, the spray gun retains its mechanical functions when the trigger is actuated, in particular the actuation of valves for spray material and / or air, but loses its electrical switching function. For example, the high-voltage generation in an electrostatic spray gun can be switched off in this way, so that it is possible to work either with or without an electrostatic field.
  • the switching device is designed as a proximity switch, for example as a reed switch.
  • the swivel lever on the trigger can only be a small size. It is therefore difficult to use and certainly not when the trigger is actuated. Switching from spraying with an electrostatic field to spraying without an electrostatic field therefore requires an interruption in the spraying process.
  • the invention is therefore based on the object of specifying an electrical switching device of the type described in the introduction, in which the actuating element can be switched over in a simple manner and in particular is also possible when the actuating member is operated.
  • the switching element is carried by a slide guided in the housing, which can be moved along a path from its working position against the force of a spring into an inactive position and back, and that the actuating element between two defined positions approximately transversely is adjustable to the slide track and has a control cam on which a driver connected to the slide bears under the influence of the spring.
  • the switching function is prevented by moving the switching element in its housing. Accordingly, the actuating element is also assigned to the housing. It can therefore be operated easily, even when the actuator is in operation. In addition, the actuating element can also be made larger, which offers advantages both for recognizability and for operation.
  • the actuating element preferably penetrates the housing and projects in both defined positions by at least the adjustment path beyond one side of the housing. In this way, the actuating element can be operated very easily. Its position is also clearly visible.
  • the actuating element can be moved on an arc or a similar path. However, it is easiest if the actuating element is axially displaceable.
  • the actuating element can be arranged laterally next to the slide axis. This makes it possible to provide the connection between the driver and the slide in the slide axis, which simplifies the construction.
  • the actuating element be a piston that can be moved in a housing bore.
  • control cam It is particularly advantageous for the control cam to have two notches arranged at different heights to determine the defined position.
  • the actuating element remains in these detents under the influence of the spring.
  • the driver can be guided in a groove of the actuating element in the working position of the slide.
  • the working position of the slide is defined.
  • Accidental shifting of the slide, for example by pulling on the cable, is made more difficult by the groove.
  • the spring should be compressed approximately to the block length in the region of the inactive position of the slide.
  • the slide can be displaced at most slightly.
  • the spring has its largest when compressed Spring force so that the driver is held securely in the associated detent.
  • the driver is attached to a slide connected to the switching element.
  • the slide track runs approximately parallel to the front of the handle housing and that the trigger element provided on the underside of the trigger can cover the slide track mouth.
  • the cable can emerge from the underside of the handle without any major diversion, where it is least obstructed.
  • the normal handle length is sufficient without difficulty to accommodate both the trigger and the handle housing underneath.
  • the actuating element is preferably arranged at the lower end of the handle housing. There it can be operated at least in one direction of movement with the little finger of the hand holding the handle (one-hand operation). This applies in particular if the actuating element is arranged in a projection of the handle housing in front of the slide axis.
  • the slide connected to the switching element emerges together with at least one further line on the underside of the handle.
  • the slide moves with a cable in the bundle of lines. Conversely, an accidental tensile load on the cable is essentially prevented by the other lines.
  • the switching element and the actuating element are accommodated in a handle housing that can be inserted into the remaining handle. This gives one Unit that can be pre-assembled and then attached to the handle. This makes manufacture and repair easier.
  • the illustrated spray gun 1 has a gun body 2 with a handle 3.
  • a trigger 4 is pivotally mounted in the handle. He actuates via a rod 5 a valve (not shown) for the supply of sprayed material in the front part of the gun and - which is also not shown - can control a valve for compressed air supplied via a line 6.
  • the handle also contains the input circuit 7 of a generator for generating the high voltage required for the electrostatic coating. It is supplied with low voltage via a cable 8.
  • An electrical switching device is also provided. It has an electrical switching element 10 and a trigger element 11 arranged on the underside of the trigger 4. This can be a reed switch or another proximity switch, a mechanically operated microswitch or the like.
  • the switching element 10 is connected directly to a cable 12 which emerges from the slider 13 at the bottom.
  • the switching element 10 is carried by a slide 13 which can be moved back and forth by a distance a in a track 14 of a handle housing 15 between the illustrated working position and an inactive position. In the inactive position, the trigger element 11 no longer has any influence on the switching element 10.
  • the slide is under the influence of a compression spring 16.
  • a pin-shaped driver 17 is clamped onto the slide 13 by means of a clamping piece 18. A movement of the driver 17 therefore leads to a displacement of the switching element 10.
  • An additional actuating element 19 in the form of a piston is axially displaceable back and forth in a bore 20 of the handle housing 15. It has a control cam 21 which has a detent 22 and 23 at two different heights.
  • the catch 22 is located at the end of a groove 24.
  • the pin-shaped driver 17 rests in the catch 22 under the action of the compression spring 16 and in the catch 23 in FIG. 3 in FIG. 2 from the right onto the part of the actuating element 19 which projects beyond the handle housing 15, the actuating element moves until it reaches the position in FIG. 3. If one presses here from the left onto the part of the actuating element 19 which projects beyond the handle housing 15, it moves into the position of FIG. 2.
  • the slide 13 and thus the switching element 10 is moved from the working position into the inactive position and back again.
  • the parts arranged in the handle housing 15 can be preassembled in this housing before it is attached to the handle 3.
  • the pre-assembly is very simple.
  • the preassembled slide unit consisting of slide 13, compression spring 16, switching element 10 and cable 12, is inserted into the track 14.
  • the actuating element 19 is inserted into the bore 20.
  • the driver 17 is fastened on the slide 13 by means of the clamping piece 18.
  • the handle housing 15 is mounted on the handle 3.
  • the simple assembly corresponds to the convenient accessibility for possible repairs.
  • the handling is very easy.
  • the actuating element 19 is easy to operate from one side or the other of the handle housing 15.
  • the switching function can even be disabled with the little finger of the grip hand. Since the actuating element 19 is arranged in a projection 26 of the handle housing 15 in front of the axis of the slide 13, the actuation by the little finger can be carried out particularly easily.
  • the switching command of the electrical switching device can be used, for example, to switch on the high voltage generator of the spray gun 1. It can also serve to actuate a valve, a pump or the like in order to supply additional air or additional material to a spray or spray gun.
  • the electrical switching device with the switchable actuating element can also be used in other technical fields whenever several functions are to be triggered by a mechanically operable actuating member, but at least one electrically controlled function thereof is to be temporarily prevented.
  • tools and devices with one-hand operation including the electrical switching function, such as screwdrivers and other assembly devices, drilling machines and other hand-held machines for machining, hot air devices for stripping or melting, and the like.

Landscapes

  • Nozzles (AREA)
  • Push-Button Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Control Of Electric Motors In General (AREA)
  • Relay Circuits (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Catching Or Destruction (AREA)
  • Mounting Components In General For Electric Apparatus (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

An electrical switching device, which is particularly suitable for spray and injection pistols, has a switching element (10), a release element (11) on an operating device (4) and an additional operating element (19) to make the switching function effective. The switching element (10) is supported by a slide (13) which can be moved against the force of a spring (16) and back. The operating element (19) can be adjusted at right angles to the slide path and has a control cam (21) on which rests a driver (17), connected to the slide (13), under the influence of the spring (16). This arrangement permits simple switching of the operating element (19), even when the operating device (4) is operated. <IMAGE>

Description

Die Erfindung bezieht sich auf eine elektrische Schaltvorrichtung mit einem in einem Gehäuse angeordneten Schaltelement, einem Auslöseelement an einem relativ zum Gehäuse bewegbaren Betätigungsorgan und einem zusätzlichen Betätigungselement zum Wirksammachen der Schaltfunktion, insbesondere für Spritz- und Sprühpistolen mit im Griffgehäuse angeordnetem Schaltelement und am Abzug vorgesehenem Auslöseelement.The invention relates to an electrical switching device with a switching element arranged in a housing, a trigger element on an actuating member movable relative to the housing and an additional actuating element for making the switching function effective, in particular for spray guns with a switching element arranged in the handle housing and a trigger element provided on the trigger .

Bei einer bekannten elektrischen Schaltvorrichtung dieser Art (DE-OS 34 12 507) besteht das Betätigungselement aus einem das Auslöseelement tragenden Schwenkhebel, der am Abzug angebracht ist. Verschwenkt man den Hebel in die unwirksame Stellung, behält die Spritzpistole bei der Abzugsbetätigung ihre mechanischen Funktionen, insbesondere die Betätigung von Ventilen für Spritzgut und/oder Luft, verliert aber ihre elektrische Schaltfunktion. Beispielsweise kann auf diese Weise die Hochspannungserzeugung bei einer elektrostatischen Spritzpistole abgeschaltet werden, so daß wahlweise mit und ohne elektrostatisches Feld gearbeitet werden kann.In a known electrical switching device of this type (DE-OS 34 12 507), the actuating element consists of a pivot lever which carries the trigger element and is attached to the trigger. If you pivot the lever into the inactive position, the spray gun retains its mechanical functions when the trigger is actuated, in particular the actuation of valves for spray material and / or air, but loses its electrical switching function. For example, the high-voltage generation in an electrostatic spray gun can be switched off in this way, so that it is possible to work either with or without an electrostatic field.

Auch kann mit dem Schwenkhebel wirksam verhindert werden, daß die Bedienungsperson bei unbeabsichtigter Betätigung des Abzugs Hochspannungsschläge erhält. Die Schaltvorrichtung ist als Annäherungsschalter ausgebildet, beispielsweise als Reed-Schalter.It can also be effectively prevented with the swivel lever that the operator receives high-voltage shocks if the trigger is actuated unintentionally. The switching device is designed as a proximity switch, for example as a reed switch.

Der Schwenkhebel am Abzug kann nur eine geringe Größe haben. Er ist daher schwierig zu bedienen und schon gar nicht bei betätigtem Abzug. Das Umschalten vom Spritzen mit elektrostatischem Feld auf das Spritzen ohne elektrostatisches Feld erfordert daher eine Unterbrechung des Spritzvorgangs.The swivel lever on the trigger can only be a small size. It is therefore difficult to use and certainly not when the trigger is actuated. Switching from spraying with an electrostatic field to spraying without an electrostatic field therefore requires an interruption in the spraying process.

Der Erfindung liegt daher die Aufgabe zugrunde, eine elektrische Schaltvorrichtung der eingangs beschriebenen Art anzugeben, bei der ein Umschalten des Betätigungselements auf einfache Weise erfolgt und insbesondere auch bei bedientem Betätigungsorgan möglich ist.The invention is therefore based on the object of specifying an electrical switching device of the type described in the introduction, in which the actuating element can be switched over in a simple manner and in particular is also possible when the actuating member is operated.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Schaltelement von einem im Gehäuse geführten Schieber getragen ist, der längs einer Bahn aus seiner Arbeitsstellung gegen die Kraft einer Feder in eine unwirksame Stellung und zurück bewegbar ist, und daß das Betätigungselement zwischen zwei definierten Stellungen etwa quer zur Schieberbahn verstellbar ist und eine Steuerkurve aufweist, an der ein mit dem Schieber verbundener Mitnehmer unter dem Einfluß der Feder anliegt.This object is achieved in that the switching element is carried by a slide guided in the housing, which can be moved along a path from its working position against the force of a spring into an inactive position and back, and that the actuating element between two defined positions approximately transversely is adjustable to the slide track and has a control cam on which a driver connected to the slide bears under the influence of the spring.

Bei dieser Konstruktion wird die Schaltfunktion dadurch verhindert, daß das Schaltelement in seinem Gehäuse verlagert wird. Demzufolge ist auch das Betätigungselement dem Gehäuse zugeordnet. Es kann daher leicht bedient werden, und zwar auch dann, wenn das Betätigungsorgan in Funktion ist. Darüber hinaus kann das Betätigungselement auch größer ausgebildet werden, was sowohl für die Erkennbarkeit als auch für die Bedienung Vorteile bietet.In this construction, the switching function is prevented by moving the switching element in its housing. Accordingly, the actuating element is also assigned to the housing. It can therefore be operated easily, even when the actuator is in operation. In addition, the actuating element can also be made larger, which offers advantages both for recognizability and for operation.

Vorzugsweise durchsetzt das Betätigungselement das Gehäuse und ragt in beiden definierten Stellungen um mindestens den Verstellweg über je eine Gehäuseseite hinaus. Auf diese Weise kann das Betätigungselement sehr einfach bedient werden. Seine stellung ist auch gut zu erkennen.The actuating element preferably penetrates the housing and projects in both defined positions by at least the adjustment path beyond one side of the housing. In this way, the actuating element can be operated very easily. Its position is also clearly visible.

Das Betätigungselement kann auf einem Kreisbogen oder einer ähnlichen Bahn bewegt werden. Am einfachsten ist es jedoch, wenn das Betätigungselement axial verschiebbar ist.The actuating element can be moved on an arc or a similar path. However, it is easiest if the actuating element is axially displaceable.

Hierbei kann das Betätigungselement seitlich neben der Schieberachse angeordnet sein. Dies erlaubt es, die Verbindung zwischen Mitnehmer und Schieber in der Schieberachse vorzusehen, was die Konstruktion vereinfacht.Here, the actuating element can be arranged laterally next to the slide axis. This makes it possible to provide the connection between the driver and the slide in the slide axis, which simplifies the construction.

Fertigungstechnisch empfiehlt es sich, daß das Betätigungselement ein in einer Gehäusebohrung verschiebbarer Kolben ist.From a manufacturing point of view, it is recommended that the actuating element be a piston that can be moved in a housing bore.

Mit besonderem Vorteil weist die Steuerkurve zwei in unterschiedlicher Höhe angeordnete Rasten zur Festlegung der definierten Stellung auf. In diesen Rasten verbleibt das Betätigungselement unter dem Einfluß der Feder.It is particularly advantageous for the control cam to have two notches arranged at different heights to determine the defined position. The actuating element remains in these detents under the influence of the spring.

Ferner kann der Mitnehmer im Bereich der Arbeitsstellung des Schiebers in einer Nut des Betätigungselements geführt sein. Auf diese Weise ist die Arbeitstellung des Schiebers definiert. Ein versehentliches Verlagern des Schiebers, beispielsweise durch Ziehen am Kabel, wird durch die Nut erschwert.Furthermore, the driver can be guided in a groove of the actuating element in the working position of the slide. In this way, the working position of the slide is defined. Accidental shifting of the slide, for example by pulling on the cable, is made more difficult by the groove.

Ferner sollte die Feder im Bereich der unwirksamen Stellung des Schiebers annähernd bis auf Blocklänge zusammengedrückt sein. Auch hier ist dann eine höchstens geringfügige Verlagerung des Schiebers möglich. Außerdem hat die Feder im zusammengedrückten Zustand ihre größte Federkraft, so daß der Mitnehmer sicher in der zugehörigen Raste gehalten ist.Furthermore, the spring should be compressed approximately to the block length in the region of the inactive position of the slide. Here too, the slide can be displaced at most slightly. In addition, the spring has its largest when compressed Spring force so that the driver is held securely in the associated detent.

Es ist auch empfehlenswert, daß der Mitnehmer auf einen mit dem Schaltelement verbundenen Schieber aufgesteckt ist.It is also recommended that the driver is attached to a slide connected to the switching element.

Bei Anwendung auf eine Spritzpistole ist es günstig, daß die Schieberbahn etwa parallel zur Vorderseite des Griffgehäuses verläuft und das an der Unterseite des Abzugs vorgesehene Auslöseelement die Schieberbahnmündung zu überdecken vermag. Hierbei kann das Kabel ohne große Umleitung an der Griffunterseite austreten, wo es am wenigsten behindert. Die normale Grifflänge reicht ohne Schwierigkeiten aus, sowohl den Abzug als auch darunter das Griffgehäuse unterzubringen.When used on a spray gun, it is favorable that the slide track runs approximately parallel to the front of the handle housing and that the trigger element provided on the underside of the trigger can cover the slide track mouth. Here, the cable can emerge from the underside of the handle without any major diversion, where it is least obstructed. The normal handle length is sufficient without difficulty to accommodate both the trigger and the handle housing underneath.

Vorzugsweise ist das Betätigungselement am unteren Ende des Griffgehäuses angeordnet. Dort kann es zumindest in der einen Bewegungsrichtung mit dem kleinen Finger der den Griff haltenden Hand betätigt werden (Einhandbedienung). Dies gilt inbesondere, wenn das Betätigungselement in einem Vorsprung des Griffgehäuses vor der Schieberachse angeordnet ist.The actuating element is preferably arranged at the lower end of the handle housing. There it can be operated at least in one direction of movement with the little finger of the hand holding the handle (one-hand operation). This applies in particular if the actuating element is arranged in a projection of the handle housing in front of the slide axis.

Bei einer weiteren Ausgestaltung tritt der mit dem Schaltelement verbundene Schieber zusammen mit wenigstens einer weiteren Leitung an der Unterseite des Griffs aus. Beim Betätigen des Betätigungselements bewegt sich der Schieber mit Kabel im Leitungsbündel. Umgekehrt wird aber eine versehentliche Zugbelastung des Kabels durch die übrigen Leitungen im wesentlichen verhindert.In a further embodiment, the slide connected to the switching element emerges together with at least one further line on the underside of the handle. When the actuating element is actuated, the slide moves with a cable in the bundle of lines. Conversely, an accidental tensile load on the cable is essentially prevented by the other lines.

Günstig ist es auch, daß das Schaltelement und das Betätigungselement in einem an den übrigen Griff einsetzbaren Griffgehäuse untergebracht sind. Dies ergibt eine Baueinheit, die vormontiert und dann am Griff befestigt werden kann. Dies erleichtert die Herstellung und Reparatur.It is also favorable that the switching element and the actuating element are accommodated in a handle housing that can be inserted into the remaining handle. This gives one Unit that can be pre-assembled and then attached to the handle. This makes manufacture and repair easier.

Die Erfindung wird nachstehend anhand eines in der Zeichnung dargestellten, bevorzugten Ausführungsbeispiels näher erläutert. Es zeigen:

Fig. 1
eine Seitenansicht, teilweise im Schnitt, des hinteren Teils einer Spritzpistole,
Fig. 2
einen Schnitt längs der Linie A-A in Fig. 1 und
Fig. 3
in einem Schnitt ähnlich wie Fig. 2 das Sperrelement in der anderen definierten Lage.
The invention is explained below with reference to a preferred embodiment shown in the drawing. Show it:
Fig. 1
a side view, partly in section, of the rear part of a spray gun,
Fig. 2
a section along the line AA in Fig. 1 and
Fig. 3
in a section similar to FIG. 2, the locking element in the other defined position.

Die veranschaulichte Sprühpistole 1 besitzt einen Pistolenkörper 2 mit einem Griff 3. Ein Abzug 4 ist schwenkbar im Griff gelagert. Er betätigt über eine Stange 5 ein nicht veranschaulichtes Ventil für die Spritzgutzufuhr im vorderen Teil der Pistole und kann - was ebenfalls nicht veranschaulicht ist - ein Ventil für über eine Leitung 6 zugeführte Druckluft ansteuern. Ferner enthält der Griff die Eingangsschaltung 7 eines Generators zur Erzeugung der für die elektrostatische Beschichtung erforderlichen Hochspannung. Sie wird über ein Kabel 8 mit Niederspannung versorgt.The illustrated spray gun 1 has a gun body 2 with a handle 3. A trigger 4 is pivotally mounted in the handle. He actuates via a rod 5 a valve (not shown) for the supply of sprayed material in the front part of the gun and - which is also not shown - can control a valve for compressed air supplied via a line 6. The handle also contains the input circuit 7 of a generator for generating the high voltage required for the electrostatic coating. It is supplied with low voltage via a cable 8.

Ferner ist eine elektrische Schaltvorrichtung vorgesehen. Sie weist ein elektrisches Schaltelement 10 und ein and der Unterseite des Abzugs 4 angeordnetes Auslöseelement 11 auf. Hierbei kann es sich um einen Reed-Schalter oder um einen anderen Annäherungsschalter, einen mechanisch betätigten Mikroschalter o. dgl. handeln. Das Schaltelement 10 ist unmittelbar mit einem Kabel 12 verbunden, das unten aus dem Schieber 13 austritt.An electrical switching device is also provided. It has an electrical switching element 10 and a trigger element 11 arranged on the underside of the trigger 4. This can be a reed switch or another proximity switch, a mechanically operated microswitch or the like. The switching element 10 is connected directly to a cable 12 which emerges from the slider 13 at the bottom.

Das Schaltelement 10 ist von einem Schieber 13 getragen, der in einer als Bohrung ausgebildeten Bahn 14 eines Griffgehäuses 15 zwischen der veranschaulichten Arbeitsstellung und einer unwirksamen Stellung um die Strecke a hin und her bewegbar ist. In der unwirksamen Stellung hat das Auslöseelement 11 keinen Einfluß mehr auf das Schaltelement 10. Der Schieber steht unter dem Einfluß einer Druckfeder 16. Ein stiftförmiger Mitnehmer 17 ist mittels eines Klemmstücks 18 auf den Schieber 13 aufgeklemmt. Eine Bewegung des Mitnehmers 17 führt daher zu einer Verschiebung des Schaltelements 10.The switching element 10 is carried by a slide 13 which can be moved back and forth by a distance a in a track 14 of a handle housing 15 between the illustrated working position and an inactive position. In the inactive position, the trigger element 11 no longer has any influence on the switching element 10. The slide is under the influence of a compression spring 16. A pin-shaped driver 17 is clamped onto the slide 13 by means of a clamping piece 18. A movement of the driver 17 therefore leads to a displacement of the switching element 10.

Ein zusätzliches Betätigungselement 19 in der Form eines Kolbens ist in einer Bohrung 20 des Griffgehäuses 15 axial hin und her verschiebbar. Es besitzt eine Steuerkurve 21, die in zwei unterschiedlichen Höhen je eine Raste 22 und 23 besitzt. Die Raste 22 befindet sich am Ende einer Nut 24. In der in Fig. 2 veranschaulichten Stellung des Betätigungselements 19 ruht der stiftförmige Mitnehmer 17 unter der Wirkung der Druckfeder 16 in der Raste 22 und und in Fig. 3 in der Raste 23. Drückt man in Fig. 2 von rechts auf den über das Griffgehäuse 15 überstehenden Teil des Betätigungselements 19, verschiebt sich das Betätigungselement, bis es die Stellung der Fig. 3 erreicht. Drücskt man hier von links auf den über das Griffgehäuse 15 überstehenden Teil des Betätigungselements 19, verschiebt sich dieses in die Stellung der Fig. 2. Gleichzeitig wird der Schieber 13 und damit das Schaltelement 10 aus der Arbeitsstellung in die unwirksame Stellung und wieder zurück bewegt.An additional actuating element 19 in the form of a piston is axially displaceable back and forth in a bore 20 of the handle housing 15. It has a control cam 21 which has a detent 22 and 23 at two different heights. The catch 22 is located at the end of a groove 24. In the position of the actuating element 19 illustrated in FIG. 2, the pin-shaped driver 17 rests in the catch 22 under the action of the compression spring 16 and in the catch 23 in FIG. 3 in FIG. 2 from the right onto the part of the actuating element 19 which projects beyond the handle housing 15, the actuating element moves until it reaches the position in FIG. 3. If one presses here from the left onto the part of the actuating element 19 which projects beyond the handle housing 15, it moves into the position of FIG. 2. At the same time, the slide 13 and thus the switching element 10 is moved from the working position into the inactive position and back again.

Ein äußerer Zug auf das Kabel 12 tritt in der Praxis nicht auf, weil es durch die übrigen Leitungen 6 und 8 des Bündels geschützt ist. Im übrigen ist die Arbeitsstellung dadurch gesichert, daß sich der Mitnehmer 17 in der Nut 24 befindet. Und die unwirksame Stellung ist dadurch gesichert, daß die Druckfeder 16 etwa auf Blocklänge zusammengedrückt ist.An external pull on the cable 12 does not occur in practice because it is protected by the remaining lines 6 and 8 of the bundle. Otherwise, the working position is secured in that the driver 17 is located in the groove 24. And the ineffective position is secured in that the compression spring 16 is compressed approximately to block length.

Die im Griffgehäuse 15 angeordneten Teile können in diesem Gehäuse vormontiert werden, bevor es am Griff 3 angebracht wird. Die Vormontage ist sehr einfach. Die vormontierte Schiebereinheit, bestehend aus Schieber 13, Druckfeder 16, Schaltelement 10 und Kabel 12, wird in die Bahn 14 gesteckt. Das Betätigungselement 19 wird in die Bohrung 20 gesteckt. Auf dem Schieber 13 wird mittels des Klemmstücks 18 der Mitnehmer 17 befestigt. Schließlich wird das Griffgehäuse 15 am Griff 3 anmontiert. Der einfachen Montage entspricht die bequeme Zugänglichkeit bei eventuellen Reparaturen.The parts arranged in the handle housing 15 can be preassembled in this housing before it is attached to the handle 3. The pre-assembly is very simple. The preassembled slide unit, consisting of slide 13, compression spring 16, switching element 10 and cable 12, is inserted into the track 14. The actuating element 19 is inserted into the bore 20. The driver 17 is fastened on the slide 13 by means of the clamping piece 18. Finally, the handle housing 15 is mounted on the handle 3. The simple assembly corresponds to the convenient accessibility for possible repairs.

Die Bedienung ist sehr einfach. Das Betätigungselement 19 ist bequem von der einen oder anderen Seite des Griffgehäuses 15 her zu bedienen. Das Unwirksammachen der Schaltfunktion ist sogar mit dem kleinen Finger der Griffhand möglich. Da das Betätigungselement 19 in einem Vorsprung 26 des Griffgehäusesw 15 vor der Achse des Schiebers 13 angeordnet ist, kann die Betätigung durch den kleinen Finger besonders einfach erfolgen.The handling is very easy. The actuating element 19 is easy to operate from one side or the other of the handle housing 15. The switching function can even be disabled with the little finger of the grip hand. Since the actuating element 19 is arranged in a projection 26 of the handle housing 15 in front of the axis of the slide 13, the actuation by the little finger can be carried out particularly easily.

Der Schaltbefehl der elektrischen Schaltvorrichtung kann beispielsweise benutzt werden, um den Hochspannungsgenerator der Sprühpistole 1 einzuschalten. Er kann auch dazu dienen, ein Ventil, eine Pumpe o. dgl. zu betätigen, um einer Sprüh- oder Spritzpistole Zusatzluft oder Zusatzmaterial zuzuführen. Die elektrische Schaltvorrichtung mit dem umschaltbaren Betätigungselement kann auch auf anderen technischen Gebieten immer dann verwendet werden, wenn durch ein mechanisch bedienbares Betätigungsorgan mehrere Funktionen ausgelöst werden, hiervon aber wenigstens eine elektrisch angesteuerte Funktion zeitweilig unterbunden werden soll. Als Beispiel seien Werkzeuge und Geräte mit Einhandbedienung, auch der elektrischen Schaltfunktion, erwähnt, wie Schrauber und andere Montagegeräte, Bohrmaschinen und andere Handmaschinen zur spanabhebenden Bearbeitung, Heißluftgeräte zum Entlacken oder Schmelzen und dergleichen.The switching command of the electrical switching device can be used, for example, to switch on the high voltage generator of the spray gun 1. It can also serve to actuate a valve, a pump or the like in order to supply additional air or additional material to a spray or spray gun. The electrical switching device with the switchable actuating element can also be used in other technical fields whenever several functions are to be triggered by a mechanically operable actuating member, but at least one electrically controlled function thereof is to be temporarily prevented. As an an example May be mentioned tools and devices with one-hand operation, including the electrical switching function, such as screwdrivers and other assembly devices, drilling machines and other hand-held machines for machining, hot air devices for stripping or melting, and the like.

Claims (14)

  1. Electrical switching device with a switching element (10) arranged in a housing (15), a trip element (11) on an operating member (4) movable relative to the housing (15), and an additional operating element (19) for rendering the switching function operative, in particular for spray and atomiser guns with the switching element arranged in the handle housing and the trip element provided on the trigger, characterised in that the switching element (10) is carried by a slide (13) which is guided in the housing (15) and which is movable along a path out of its working position against the force of a spring (16) into an inoperative position and back, and that the operating element (19) is displaceable approximately transversely to the slide path between two predefined positions and comprises a cam (21) against which a follower (17) connected to the slide abuts under the influence of the spring.
  2. Electrical switching device according to claim 1, characterised in that the operating element (19) passes through the housing (15) and in each of the two predefined positions extends beyond one side of the housing by at least the distance of displacement.
  3. Electrical switching device according to claim 1 or 2, characterised in that the operating element (19) is axially slidable.
  4. Electrical switching device according to claim 3, characterised in that the operating element (19) is arranged laterally adjacent to the slide axis.
  5. Electrical switching device according to claim 3 or 4, characterised in that the operating element (19) is a piston slidable in a housing bore (20).
  6. Electrical switching device according to any of claims 1 to 5, characterised in that the cam (21) comprises two notches (22, 23) arranged at different heights for fixing the predefined positions.
  7. Electrical switching device according to any of claims 1 to 6, characterised in that the follower (17) is guided in a groove (24) of the operating element (19) in the region of the working position of the slide (13).
  8. Electrical switching device according to any of claims 1 to 7, characterised in that the spring (16) is compressed almost to solid length in the region of the inoperative position of the slide (13).
  9. Electrical switching device according to any of claims 1 to 8, characterised in that the follower (17) is fitted onto a slide (13) connected to the switching element (10).
  10. Electrical switching device according to any of claims 1 to 9, characterised in that the slide path (14) extends approximately parallel to the front side of the handle housing (15) and the trip element (11) provided on the lower side of the trigger (4) is capable of partially overlapping the mouth of the slice path.
  11. Electrical switching device according to claim 10, characterised in that the operating element 19) is arranged at the lower end of the handle housing (15).
  12. Electrical switching device according to claim 11, characterised in that the operating element (19) is arranged in a projection (26) of the handle housing (15) in front of the slide axis.
  13. Electrical switching device according to any of claims 1 to 12, characterised in that the slide (13) connected to the switching element (10) emerges, together with at least one additional line (6, 8), on the lower side of the handle (3).
  14. Electrical switching device according to any of claims 1 to 13, characterised in that the switching element (10) and the operating element (19) are accommodated in a handle housing (15) which can be inserted on the remainder of the handle (3).
EP88100378A 1987-01-21 1988-01-13 Electric switching device Expired - Lifetime EP0275913B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88100378T ATE75072T1 (en) 1987-01-21 1988-01-13 ELECTRICAL SWITCHING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8700939U DE8700939U1 (en) 1987-01-21 1987-01-21 Electrical switching device
DE8700939U 1987-01-21

Publications (3)

Publication Number Publication Date
EP0275913A2 EP0275913A2 (en) 1988-07-27
EP0275913A3 EP0275913A3 (en) 1988-12-14
EP0275913B1 true EP0275913B1 (en) 1992-04-15

Family

ID=6803818

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100378A Expired - Lifetime EP0275913B1 (en) 1987-01-21 1988-01-13 Electric switching device

Country Status (4)

Country Link
EP (1) EP0275913B1 (en)
AT (1) ATE75072T1 (en)
DE (2) DE8700939U1 (en)
ES (1) ES2031162T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9399232B2 (en) * 2013-04-17 2016-07-26 Carlisle Fluid Technologies, Inc. Electrostatic spray tool system
IT202100003533A1 (en) * 2021-02-16 2022-08-16 Tecnocoating sas di Sassi Fabiola IMPROVED EQUIPMENT FOR ELECTROSTATIC SPRAY PAINTING

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3038596A1 (en) * 1980-10-13 1982-04-22 Spritztechnik Kopperschmidt Gmbh & Co Kg, 4800 Bielefeld Electrostatic paint spray gun control - consists of spring-loaded needle valve for paint and switch for electrical circuit
US4441656A (en) * 1982-01-29 1984-04-10 J. Wagner Ag Electrostatic disabling switch for electrostatic spray guns
DE3507965C1 (en) * 1985-03-06 1986-04-03 Ransburg-Gema AG, St.Gallen Electrostatic spray gun for coating material

Also Published As

Publication number Publication date
EP0275913A3 (en) 1988-12-14
DE3869970D1 (en) 1992-05-21
DE8700939U1 (en) 1987-03-05
ES2031162T3 (en) 1992-12-01
ATE75072T1 (en) 1992-05-15
EP0275913A2 (en) 1988-07-27

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