EP0275913B1 - Elektrische Schaltvorrichtung - Google Patents

Elektrische Schaltvorrichtung 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
Authority
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)
English (en)
French (fr)
Other versions
EP0275913A2 (de
EP0275913A3 (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/de
Publication of EP0275913A2 publication Critical patent/EP0275913A2/de
Publication of EP0275913A3 publication Critical patent/EP0275913A3/de
Application granted granted Critical
Publication of EP0275913B1 publication Critical patent/EP0275913B1/de
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)
  • Catching Or Destruction (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Control Of Electric Motors In General (AREA)
  • Relay Circuits (AREA)
  • Automatic Focus Adjustment (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Mounting Components In General For Electric Apparatus (AREA)
  • Push-Button Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP88100378A 1987-01-21 1988-01-13 Elektrische Schaltvorrichtung Expired - Lifetime EP0275913B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88100378T ATE75072T1 (de) 1987-01-21 1988-01-13 Elektrische schaltvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8700939U DE8700939U1 (de) 1987-01-21 1987-01-21 Elektrische Schaltvorrichtung
DE8700939U 1987-01-21

Publications (3)

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

Family

ID=6803818

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100378A Expired - Lifetime EP0275913B1 (de) 1987-01-21 1988-01-13 Elektrische Schaltvorrichtung

Country Status (4)

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

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 (it) * 2021-02-16 2022-08-16 Tecnocoating sas di Sassi Fabiola Apparecchiatura perfezionata per verniciatura elettrostatica a spruzzo

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3038596A1 (de) * 1980-10-13 1982-04-22 Spritztechnik Kopperschmidt Gmbh & Co Kg, 4800 Bielefeld Elektrostatische farbspritzpistole
US4441656A (en) * 1982-01-29 1984-04-10 J. Wagner Ag Electrostatic disabling switch for electrostatic spray guns
DE3507965C1 (de) * 1985-03-06 1986-04-03 Ransburg-Gema AG, St.Gallen Elektrostatische Spruehpistole fuer Beschichtungsmaterial

Also Published As

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

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