EP1009937B1 - Protective circuit - Google Patents

Protective circuit Download PDF

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Publication number
EP1009937B1
EP1009937B1 EP98924022A EP98924022A EP1009937B1 EP 1009937 B1 EP1009937 B1 EP 1009937B1 EP 98924022 A EP98924022 A EP 98924022A EP 98924022 A EP98924022 A EP 98924022A EP 1009937 B1 EP1009937 B1 EP 1009937B1
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EP
European Patent Office
Prior art keywords
plug
actuator
connection
protective circuit
safety switch
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
EP98924022A
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German (de)
French (fr)
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EP1009937A1 (en
Inventor
Dietmar Meier
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.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1009937A1 publication Critical patent/EP1009937A1/en
Application granted granted Critical
Publication of EP1009937B1 publication Critical patent/EP1009937B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems

Definitions

  • the invention relates to a safety circuit for the control of electrical actuators according to the genus of the main claim.
  • an electrical switch which is designed as an intermediate connector is and has protruding electrical plug contacts on one side, so that in one Socket to be plugged in, and is designed to be on an opposite side to be able to attach a plug located at one end of a cable.
  • the desk is used to switch an electrical device on and off without its own switch or one String of lights and has the same function as a switch on the consumer itself Switch itself has no safety function. Rather, it is safe to operate the switch; which can be done via a pneumatic actuator from the distance, so that the danger is low to come into contact with live parts
  • a safety circuit according to the preamble of claim 1 is known from the DE 195 15 640 known. Here is with the help of two electrical connections in one between a control circuit and the electromagnet running electrical line a safety switch inserted, which is for example a limit switch.
  • the safety circuit according to the invention with the features of claim 1 the advantage that an existing connector (for example according to DIN standard) can be expanded in an electrical system so that the control signals for the electrical actuator inside the housing via the connectable outside Safety switches can be performed.
  • On the first connector is an additional one Intermediate plug with two inputs can be easily plugged in and, if necessary, with a single one Central screw lockable, so that the one input is the first connector for the Control signals of the actuator and the other input the second connector for the Safety switch forms.
  • the adapter plug leads to the actuator.
  • the adapter plug is simple can be retrofitted without in the control or regulating circuit or the mechanical design to intervene in the system. Elaborate cable, clamping or soldering work on the often relatively inaccessible Attachment omitted.
  • control signals are in a conventional manner via the in Row of safety switches located in the control circuit.
  • a Transzorb diode can be connected, which bridges the poles of the control line.
  • Figure 1 is a magnet 1 as an electrical actuator shown for a hydraulic system that with a first Plug 2 via a cable connection 3 with control signals is supplied for the actuation of the actuator.
  • the plug 2 is not directly connected to one corresponding connector on the housing of the magnet 1, but connected via an adapter plug 4.
  • the adapter plug 4 has an input 5 for the control line and another input 6 for connection a safety switch via an additional one Plug 7 on.
  • the intermediate connector 4 is with its inputs 5 and 6 and the additional plug 7 in Figure 2 shown in detail.
  • the output 8 of the intermediate plug 4 is placed directly on the magnet 1 and on this attached via a screw 9.
  • the screw 9 is in the Figure 1 can be seen in plan view. Inside the adapter plug 4 are the necessary electrical connections made by crimping or soldering, the further details shown in the figure for the invention Construction are not essential.
  • FIG. 3 An electrical equivalent circuit diagram of the invention Safety circuit is shown in Figure 3, the Control line for magnet 1 between the connection point 10 and the connection point 11 of the input 6 by means of of a safety switch 12 can be switched through or is separable. By plugging in the additional connector 7 can thus a safety switch 12 with a trigger function selected for each application simply to the existing arrangement via the adapter plug 4 can be switched on.
  • connection point 16 represents the ground connection.
  • FIG. 5 shows different views of the connector 17 with mutually perpendicular Inputs 5 and 6 according to Figure 4, with here the explanations for FIG. 2 are referred to.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Control Of Combustion (AREA)
  • Air Bags (AREA)
  • Cookers (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

The invention concerns a protective circuit provided with additional switching function by exciting an electric adjusting component. The excitation signals to said adjusting component (1) are guided, between a first removable plug-type connector (2) and the adjusting component inside a housing, by means of an adapter plug (4; 17) with another removable plug-type connector, such that with the second removable plug-type connector, a protective switch (12) can be inserted in the excitation circuit of the adjusting component.

Description

Stand der TechnikState of the art

Die Erfindung betrifft eine Sicherheitsschaltung für die Ansteuerung von elektrischen Stellgliedem nach der Gattung des Hauptanspruchs.The invention relates to a safety circuit for the control of electrical actuators according to the genus of the main claim.

Es sind beispielsweise sogenannte Zweihand-Sicherheitsschaltungen für die Ansteuerung von elektrischen Stellgliedern oder elektrischen Maschinen aus dem "AEG-Hilfsbuch 1, Grundlagen der Elektrotechnik, Elitera Verlag Berlin 1972, Seiten 417, 418" bekannt, bei denen mit einem separaten Not-Aus-Schalter der Stromkreis zur Versorgung der Maschine jederzeit unterbrochen werden kann.For example, there are so-called two-hand safety circuits for controlling electrical actuators or electrical machines from "AEG Aid Book 1, Basics der Elektrotechnik, Elitera Verlag Berlin 1972, pages 417, 418 ", in which with a separate emergency stop switch to power the machine at all times can be interrupted.

Aus der US-A-4 150 264 ist ein elektrischer Schalter bekannt, der als Zwischenstecker ausgebildet ist und an einer Seite abstehende elektrische Steckkontakte hat, um damit in eine Steckdose eingesteckt zu werden, und an einer gegenüberliegenden Seite so gestaltet ist, um einen an einem Ende eines Kabels befindlichen Stecker aufstecken zu können. Der Schalter dient zum Ein- und Ausschalten eines elektrischen Gerätes ohne eigenen Schalter oder einer Lichterkette und hat insofern dieselbe Funktion wie ein Schalter am Verbraucher selbst. Der Schalter selbst hat keine Sicherheitsfunktion. Sicher ist vielmehr die Bedienung des Schalters; die über einen pneumatischen Aktuator von der Feme aus erfolgen kann, so daß die Gefahr gering ist, mit elektrische Spannung führenden Teilen in Berührung zu kommen,From US-A-4 150 264 an electrical switch is known which is designed as an intermediate connector is and has protruding electrical plug contacts on one side, so that in one Socket to be plugged in, and is designed to be on an opposite side to be able to attach a plug located at one end of a cable. The desk is used to switch an electrical device on and off without its own switch or one String of lights and has the same function as a switch on the consumer itself Switch itself has no safety function. Rather, it is safe to operate the switch; which can be done via a pneumatic actuator from the distance, so that the danger is low to come into contact with live parts

Eine Sicherheitsschaltung nach dem Oberbegriff des Patentanspruchs 1 ist aus der DE 195 15 640 bekannt. Hier ist mit Hilfe zweier elektrischer Verbindungen in eine zwischen einer Ansteuerschaltung und dem Elektromagneten verlaufende elektrische Leitung ein Sicherheitsschalter eingefügt, der zum Beispiel ein Endschalter ist.A safety circuit according to the preamble of claim 1 is known from the DE 195 15 640 known. Here is with the help of two electrical connections in one between a control circuit and the electromagnet running electrical line a safety switch inserted, which is for example a limit switch.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Sicherheitsschaltung mit den Merkmalen des Patentanspruchs 1 hat den Vorteil, daß auf einfache Weise eine bereits vorhandene Steckverbindung (beispielsweise nach DIN-Norm) in einer elektrischen Anlage so erweitert werden kann, daß die Ansteuersignale für das elektrische Stellglied im Innern des Gehäuse über den außen anschließbaren Sicherheitsschalter geführt werden können. Auf die erste Steckverbindung ist ein zusätzlicher Zwischenstecker mit zwei Eingängen einfach aufsteckbar und gegebenenfalls mit einer einzigen Zentralschraube sicherbar, so daß der eine Eingang die erste Steckverbindung für die Ansteuersignale des Stellgliedes und der andere Eingang die zweite Steckverbindung für den Sicherheitsschalter bildet. Ein Ausgang des an drei Seiten Steckverbindungen aufweisenden Zwischensteckers führt zum Stellglied. Der Zwischenstecker ist dabei auf einfache Weise nachrüstbar, ohne in die Steuer- oder Regelschaltung oder die mechanische Ausgestaltung der Anlage einzugreifen. Aufwendige Kabel-, Klemm oder Lötarbeiten an der oft relativ unzugänglichen Anlage entfallen.The safety circuit according to the invention with the features of claim 1 the advantage that an existing connector (for example according to DIN standard) can be expanded in an electrical system so that the control signals for the electrical actuator inside the housing via the connectable outside Safety switches can be performed. On the first connector is an additional one Intermediate plug with two inputs can be easily plugged in and, if necessary, with a single one Central screw lockable, so that the one input is the first connector for the Control signals of the actuator and the other input the second connector for the Safety switch forms. An outlet of the connector on three sides The adapter plug leads to the actuator. The adapter plug is simple can be retrofitted without in the control or regulating circuit or the mechanical design to intervene in the system. Elaborate cable, clamping or soldering work on the often relatively inaccessible Attachment omitted.

Gemäß Patentanspruch 3 sind die Ansteuersignale in an sich bekannter Weise über den in Reihe im Ansteuerstromkreis liegenden Sicherheitsschalter geführt. Zur Vermeidung von störenden Spannungsspitzen durch die Sicherheitsschaltvorgänge im Zwischenstecker ist gemäß Patentanspruch 4 eine Transzorb-Diode anschließbar, die die Pole der Ansteuerleitung überbrückt.According to claim 3, the control signals are in a conventional manner via the in Row of safety switches located in the control circuit. To avoid annoying Voltage peaks due to the safety switching processes in the adapter plug are in accordance with Claim 4 a Transzorb diode can be connected, which bridges the poles of the control line.

Weitere vorteilhafte Ausführungsformen sind in den Patentansprüchen 2 und 5 angegeben. Further advantageous embodiments are specified in claims 2 and 5.

Zeichnungdrawing

Ausführungsbeispiele der erfindungsgemäßen Sicherheitsschaltung werden anhand der Figuren erläutert. Es zeigen:

  • Figur 1 eine Ansicht eines Magneten als elektrisches Stellglied mit einer zusätzlichen Steckverbindung für einen Sicherheitsschalter;
  • Figur 2 eine Detailansicht des zusätzlichen Zwischensteckers mit zwei Eingängen und eines Steckers für den Sicherheitsschalter;
  • Figur 3 ein elektrisches Ersatzschaltbild;
  • Figur 4 ein zweites Ausführungsbeispiel des Zwischensteckers mit zwei jeweils rechtwinklig zueinander liegenden Eingängen;
  • Figur 5 Detailansichten des Zwischensteckers nach Figur 4 und
  • Figur 6 ein elektrisches Ersatzschaltbild des Zwischensteckers nach Figur 4.
  • Exemplary embodiments of the safety circuit according to the invention are explained on the basis of the figures. Show it:
  • Figure 1 is a view of a magnet as an electrical actuator with an additional connector for a safety switch;
  • Figure 2 is a detailed view of the additional intermediate connector with two inputs and a connector for the safety switch;
  • Figure 3 is an electrical equivalent circuit;
  • FIG. 4 shows a second exemplary embodiment of the intermediate connector with two inputs which are each at right angles to one another;
  • Figure 5 shows detailed views of the adapter according to Figure 4 and
  • FIG. 6 shows an electrical equivalent circuit diagram of the adapter plug according to FIG. 4.
  • Beschreibung der AusführungsbeispieleDescription of the embodiments

    In Figur 1 ist ein Magnet 1 als elektrisches Stellglied für ein Hydrauliksystem gezeigt, der mit einem ersten Stecker 2 über eine Kabelverbindung 3 mit Ansteuersignalen für die Betätigung des Stellgliedes versorgt wird. Der Stecker 2 ist gemäß der Erfindung nicht direkt an eine entsprechende Steckerkupplung am Gehäuse des Magneten 1, sondern über einen Zwischenstecker 4 angeschlossen.In Figure 1 is a magnet 1 as an electrical actuator shown for a hydraulic system that with a first Plug 2 via a cable connection 3 with control signals is supplied for the actuation of the actuator. According to the invention, the plug 2 is not directly connected to one corresponding connector on the housing of the magnet 1, but connected via an adapter plug 4.

    Der Zwischenstecker 4 weist einen Eingang 5 für die Ansteuerleitung und einen anderen Eingang 6 für den Anschluss eines Sicherheitsschalters über einen zusätzliche Stecker 7 auf. Der Zwischenstecker 4 ist mit seinen Eingängen 5 und 6 und dem zusätzlichen Stecker 7 in Figur 2 im Detail gezeigt. Der Ausgang 8 des Zwischensteckers 4 wird direkt auf den Magneten 1 gesteckt und an diesem über eine Schraube 9 befestigt. Die Schraube 9 ist in der Figur 1 in der Draufsicht zu sehen. Im Inneren des Zwischensteckers 4 sind die notwendigen elektrischen Verbindungen durch Crimpen oder Löten hergestellt, wobei die weiteren, in der Figur dargestellten Details für den erfindungsgemäßen Aufbau nicht wesentlich sind.The adapter plug 4 has an input 5 for the control line and another input 6 for connection a safety switch via an additional one Plug 7 on. The intermediate connector 4 is with its inputs 5 and 6 and the additional plug 7 in Figure 2 shown in detail. The output 8 of the intermediate plug 4 is placed directly on the magnet 1 and on this attached via a screw 9. The screw 9 is in the Figure 1 can be seen in plan view. Inside the adapter plug 4 are the necessary electrical connections made by crimping or soldering, the further details shown in the figure for the invention Construction are not essential.

    Ein elektrisches Ersatzschaltbild der erfindungsgemäßen Sicherheitsschaltung ist in Figur 3 gezeigt, wobei die Ansteuerleitung für den Magneten 1 zwischen dem Anschlusspunkt 10 und dem Anschlusspunkt 11 des Eingangs 6 mittels eines Sicherheitsschalters 12 durchschaltbar bzw. trennbar ist. Durch das Aufstecken des zusätzlichen Stekkers 7 kann somit ein Sicherheitsschalter 12 mit einer jeweils für den Anwendungsfall ausgewählten Auslösefunktion einfach an die vorhandene Anordnung über den Zwischenstecker 4 angeschaltet werden. An electrical equivalent circuit diagram of the invention Safety circuit is shown in Figure 3, the Control line for magnet 1 between the connection point 10 and the connection point 11 of the input 6 by means of of a safety switch 12 can be switched through or is separable. By plugging in the additional connector 7 can thus a safety switch 12 with a trigger function selected for each application simply to the existing arrangement via the adapter plug 4 can be switched on.

    Zwischen dem einen Pol 13 des Anschlusses des Magneten 1 am Ausgang S und dem andern Pol 14 ist als Schutz vor störenden Spannungsspitzen bei den Schaltvorgängen eine Transzorb-Diode 15 angeordnet. Der Anschlusspunkt 16 stellt den Masseanschluss dar.Between the one pole 13 of the connection of the magnet 1 at the output S and the other pole 14 is to protect against disturbing voltage peaks during switching operations Transzorb diode 15 arranged. The connection point 16 represents the ground connection.

    Bei einem zweiten Ausführungsbeispiel nach Figur 4 ist ein Zwischenstecker 17 in Abwandlung zum Ausführungsbeispiel nach Figur 1 mit rechtwinklig zueinander angeordneten Eingängen 5 und 6 gezeigt. Der Stecker 7, über den der Sicherheitsschalter 12 angeschlossen wird, ist hierbei in Längsrichtung des Magneten 1 eingesteckt.In a second embodiment according to Figure 4 an adapter plug 17 in a modification of the embodiment according to Figure 1 arranged at right angles to each other Inputs 5 and 6 shown. The connector 7, through the the safety switch 12 is connected here inserted in the longitudinal direction of the magnet 1.

    Die Darstellung nach Figur 5 zeigt verschiedene Ansichten des Zwischensteckers 17 mit rechtwinklig zueinander liegenden Eingängen 5 und 6 nach der Figur 4, wobei hier auf die Erläuterungen zu Figur 2 verwiesen wird.The illustration according to FIG. 5 shows different views of the connector 17 with mutually perpendicular Inputs 5 and 6 according to Figure 4, with here the explanations for FIG. 2 are referred to.

    Aus dem Ersatzschaltbild nach Figur 6 sind die im Vergleich zum Ersatzschaltbild nach Figur 3 unterschiedlichen geometrischen Ausrichtungen der Eingänge 5 und 6 erkennbar, wobei die Ersatzschaltbilder jedoch funktionsgleich sind.From the equivalent circuit diagram according to FIG. 6, they are compared to the equivalent circuit diagram of Figure 3 different geometrical orientations of the inputs 5 and 6 can be seen, but the equivalent circuit diagrams have the same function are.

    Claims (5)

    1. Protective circuit for an electric actuator, which is in the form of a magnet for fluidic open-loop and closed-loop control systems, having an additional switching function for driving the electric actuator, characterized in that the drive signals for the actuator (1) are fed between a first detachable plug-in connection (2) and the actuator within a housing via a further detachable plug-in connection such that a safety switch (12) can be inserted into the drive circuit of the actuator (1) via the second detachable plug-in connection, and with which protective circuit an additional adapter plug (4; 17) having two inputs (5, 6) can be plugged onto the first plug-in connection (2), one input (5) forming the first plug-in connection for the drive signals and the other input (6) forming the second plug-in connection for the safety switch (12), whilst an output (8) leads to the actuator (1) such that the adapter plug (4; 17) has plug-in connections (5, 6, 8) on three sides.
    2. Protective circuit according to Claim 1, characterized in that the second input (6) for the safety switch (12) is bent back at a right angle to the plug-in connection (8), which leads to the actuator (1).
    3. Protective circuit according to Claim 1 or 2, characterized in that the drive signals are fed via the safety switch (12) which is connected in series in the drive circuit.
    4. Protective circuit according to one of Claims 1 to 3, characterized in that, in the additional adapter plug (4; 17), the poles (13, 14), of the drive line, to which the actuator (1) can be connected, are protected by a transzorb diode (15).
    5. Protective circuit according to one of the preceding claims, characterized in that the actuator is a magnet for hydraulic open-loop and closed-loop control systems in motor vehicles.
    EP98924022A 1997-09-04 1998-03-19 Protective circuit Expired - Lifetime EP1009937B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE19738637 1997-09-04
    DE19738637A DE19738637A1 (en) 1997-09-04 1997-09-04 Safety circuit
    PCT/DE1998/000803 WO1999011939A1 (en) 1997-09-04 1998-03-19 Protective circuit

    Publications (2)

    Publication Number Publication Date
    EP1009937A1 EP1009937A1 (en) 2000-06-21
    EP1009937B1 true EP1009937B1 (en) 2004-06-02

    Family

    ID=7841156

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP98924022A Expired - Lifetime EP1009937B1 (en) 1997-09-04 1998-03-19 Protective circuit

    Country Status (8)

    Country Link
    EP (1) EP1009937B1 (en)
    JP (1) JP4157273B2 (en)
    KR (1) KR100530687B1 (en)
    CN (1) CN1130504C (en)
    AT (1) ATE268437T1 (en)
    DE (2) DE19738637A1 (en)
    TW (1) TW461152B (en)
    WO (1) WO1999011939A1 (en)

    Citations (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4150264A (en) * 1978-05-02 1979-04-17 Gilbert Products Incorporated Remotely controlled electric switch

    Family Cites Families (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE3340467C2 (en) * 1983-11-09 1986-04-03 Herbert 8883 Gundelfingen Denk Device for supplying pressure medium to a hydraulic motor
    DE19515640B4 (en) * 1995-04-28 2004-04-08 Bosch Rexroth Ag Circuit arrangement for the electrical control of a fluidic valve

    Patent Citations (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4150264A (en) * 1978-05-02 1979-04-17 Gilbert Products Incorporated Remotely controlled electric switch

    Also Published As

    Publication number Publication date
    KR20010023474A (en) 2001-03-26
    JP4157273B2 (en) 2008-10-01
    TW461152B (en) 2001-10-21
    DE19738637A1 (en) 1999-03-11
    KR100530687B1 (en) 2005-11-24
    WO1999011939A1 (en) 1999-03-11
    JP2001515257A (en) 2001-09-18
    ATE268437T1 (en) 2004-06-15
    CN1269873A (en) 2000-10-11
    EP1009937A1 (en) 2000-06-21
    DE59811516D1 (en) 2004-07-08
    CN1130504C (en) 2003-12-10

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