EP0013992A1 - Operating device for electrical or pneumatic switch - Google Patents

Operating device for electrical or pneumatic switch Download PDF

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Publication number
EP0013992A1
EP0013992A1 EP80100378A EP80100378A EP0013992A1 EP 0013992 A1 EP0013992 A1 EP 0013992A1 EP 80100378 A EP80100378 A EP 80100378A EP 80100378 A EP80100378 A EP 80100378A EP 0013992 A1 EP0013992 A1 EP 0013992A1
Authority
EP
European Patent Office
Prior art keywords
spring
switching
dead center
electrical
leg
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.)
Granted
Application number
EP80100378A
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German (de)
French (fr)
Other versions
EP0013992B1 (en
Inventor
Hendrikus Berkhof
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.)
Honeywell BV
Original Assignee
Honeywell BV
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 Honeywell BV filed Critical Honeywell BV
Publication of EP0013992A1 publication Critical patent/EP0013992A1/en
Application granted granted Critical
Publication of EP0013992B1 publication Critical patent/EP0013992B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/18—Energy stored by deformation of elastic members by flexing of blade springs

Definitions

  • the invention relates to an actuating device according to the preamble of claim 1.
  • Such devices are usually used for actuating so-called snap switches, a contact being provided at the free end of the leaf spring, which works together with a stationary counter-contact.
  • the object of the invention is to provide an actuating device which can be used both for electrical and pneumatic switching elements and which can exert higher actuating forces than conventional snap-action switches without additional outlay on equipment.
  • This object is achieved by the invention characterized in claim 1.
  • the leaf spring that is used here it is not the leaf spring that is used here, but the dead center spring serving as part of the same and causing the snap movement to generate the actuating force.
  • larger actuating forces can be applied using the known snap spring elements produced in large numbers and thus reliably actuate both electrical and pneumatic switching elements.
  • a leaf spring 2 is clamped on one side, for example with its fastening end 3 riveted to a housing shoulder 5 with the aid of a rivet 4.
  • the middle leg 6 is shortened and pre-stressed into a notch 7 of a bracket 8 also held on the shoulder 5 by means of the: rivet 4.
  • This arcuately curved dead center spring stands opposite the switching element to be actuated, which in the present case is a two-armed rocker 9, which carries a closing body 12 and 13 on each of the two lever arms 10 and 11.
  • the two closing bodies each face a valve seat 14 or 15 and thus either close one or the other passage.
  • the leaf spring 2 rests with its free end on the bracket 8, which determines its upper limit position.
  • the actuating slide 16 guided in two lateral rails 23 presses the side legs 24 of the leaf spring 2 down and this passes through the dead center position, it suddenly jumps down, driven by the force of the dead center spring 6.
  • the dead center spring 6 actuates via the extension 18 the rocker 9 which can be pivoted about the axis 19 fixed to the housing, so that the valve 13, 15 is now closed and the other valve 12, 14 is opened.
  • the contact 20 provided at the free end of the leaf spring 2 remains unused in the present application. However, it can cooperate with a mating contact provided on the housing shoulder 21 or can be replaced by a rubber stopper to dampen the switching movement.

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  • Mechanically-Actuated Valves (AREA)
  • Mechanisms For Operating Contacts (AREA)

Abstract

1. Snap-acting operating device for electrical or pneumatic switch comprising a spring blade (2) stationarily mounted on its one end and exposed to the operating force (16), said spring blade having at least one leg (6) formed as a pre-biased dead centre spring for effecting the snap action, characterized in that the pre-biased leg is located opposite the switch member (9) and the switching force is directly transmitted from said leg (6) to the switch member (9).

Description

Die Erfindung betrifft eine Betätigungseinrichtung gemäß Gattungsbegriff des Anspruchs 1. Solche Einrichtungen werden üblicherweise zur Betätigung sogenannter Schnappschalter eingesetzt, wobei am freien Ende der Blattfeder ein Kontakt vorgesehen ist, der mit einem ortsfesten Gegenkontakt zusammen arbeitet. Aufgabe der Erfindung ist es, eine sowohl für elektrische als auch pneumatische Schaltglieder verwendbare Betätigungseinrichtung zu schaffen, welche ohne zusätzlichen gerätemäßigen Aufwand höhere Betätigungskräfte als herkömmliche Schnappschalter aufzubringen vermag. Diese Aufgabe wird gelöst durch die im Anspruch 1 gekennzeichnete Erfindung. Abweichend von den bekannten Schnappschaltern wird hier somit nicht die Blattfeder sondern die als Teil derselben dienende und die Schnappbewegung hervorrufende Totpunktfeder zur Erzeugung der Betätigungskraft verwendet. Hierdurch kann man unter Verwendung der bekannten in großen Stückzahlen hergestellten Schnappfederelemente größere Betätigungskräfte aufbringen und damit sowohl elektrische als auch pneumatische Schaltglieder zuverlässig betätigen. Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.The invention relates to an actuating device according to the preamble of claim 1. Such devices are usually used for actuating so-called snap switches, a contact being provided at the free end of the leaf spring, which works together with a stationary counter-contact. The object of the invention is to provide an actuating device which can be used both for electrical and pneumatic switching elements and which can exert higher actuating forces than conventional snap-action switches without additional outlay on equipment. This object is achieved by the invention characterized in claim 1. In a departure from the known snap switches, it is not the leaf spring that is used here, but the dead center spring serving as part of the same and causing the snap movement to generate the actuating force. As a result, larger actuating forces can be applied using the known snap spring elements produced in large numbers and thus reliably actuate both electrical and pneumatic switching elements. Advantageous developments of the invention result from the subclaims.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung wiedergegebenen Ausführungsbeispiels erläutert. Dabei zeigt

  • Fig. 1 einen Schnitt durch eine solche Betätigungseinrichtung parallel zur Blattfeder und
  • Fig. 2 einen hierzu orthogonalen Schnitt in Höhe der Schnittlinie II-II.
The invention is explained below using an exemplary embodiment shown in the drawing. It shows
  • Fig. 1 shows a section through such an actuator parallel to the leaf spring and
  • F ig. 2 shows an orthogonal section at the section line II-II.

In einem Gehäuse 1 ist einseitig eine Blattfeder 2 eingespannt, beispielsweise mit ihrem Befestigungsende 3 mit Hilfe eines Niets 4 an einem Gehäuseabsatz 5 angenietet. Es handelt sich um eine dreischenklige Blattfeder bekannter Bauform, deren Mittelschenkel 6 verkürzt und unter Vorspannung in eine Kerbe 7 eines ebenfalls am Absatz 5 mittels des: Niets 4 gehaltenen Bügels 8 eingesetzt ist. Diese bogenförmig gewölbte Totpunktfeder steht dem zu betätigenden Schaltglied gegenüber, welches im vorliegenden Fall eine zweiarmige Wippe 9 ist, die an beiden Hebelarmen 10 und 11 je einen Schließkörper 12 bzw. 13 trägt. Die beiden Schließkörper stehen je einem Ventilsitz 14 bzw.15 gegenüber und verschließen somit entweder den einen oder den anderen Durchlaß.In a housing 1, a leaf spring 2 is clamped on one side, for example with its fastening end 3 riveted to a housing shoulder 5 with the aid of a rivet 4. It is a three-leg leaf spring of known design, the middle leg 6 is shortened and pre-stressed into a notch 7 of a bracket 8 also held on the shoulder 5 by means of the: rivet 4. This arcuately curved dead center spring stands opposite the switching element to be actuated, which in the present case is a two-armed rocker 9, which carries a closing body 12 and 13 on each of the two lever arms 10 and 11. The two closing bodies each face a valve seat 14 or 15 and thus either close one or the other passage.

In der gezeigten Ruhestellung liegt die Blattfeder 2 mit ihrem freien Ende am Haltebügel 8 an, der ihre obere Grenzlage bestimmt. Sobald der in zwei seitlichen Schienen 23 geführte Betätigungsschieber 16 die Seitenschenkel 24 der Blattfeder 2 nach unten drückt und diese die Totpunktlage durchläuft, springt sie, angetrieben durch die Kraft der Totpunktfeder 6 schlagartig nach unten um. Dabei betätigt die Totpunktfeder 6 über den Ansatz 18 die um die gehäusefeste Achse 19 schwenkbare Wippe 9, so daß nunmehr das Ventil 13, 15 geschlossen und das andere Ventil 12, 14 geöffnet wird. Der am freien Ende der Blattfeder 2 vorgesehene Kontakt 20 bleibt im vorliegenden Anwendungsfall ungenutzt. Er kann jedoch mit einem auf den Gehäuseabsatz 21 vorgesehenen Gegenkontakt zusammenarbeiten oder zur Dämpfung der Schaltbewegung durch einen Gummistopfen ersetzt sein.In the rest position shown, the leaf spring 2 rests with its free end on the bracket 8, which determines its upper limit position. As soon as the actuating slide 16 guided in two lateral rails 23 presses the side legs 24 of the leaf spring 2 down and this passes through the dead center position, it suddenly jumps down, driven by the force of the dead center spring 6. The dead center spring 6 actuates via the extension 18 the rocker 9 which can be pivoted about the axis 19 fixed to the housing, so that the valve 13, 15 is now closed and the other valve 12, 14 is opened. The contact 20 provided at the free end of the leaf spring 2 remains unused in the present application. However, it can cooperate with a mating contact provided on the housing shoulder 21 or can be replaced by a rubber stopper to dampen the switching movement.

Sobald ein auf den Betätigungsschieber.16 einwirkender Stößel, z.B. eines Temperaturfühlers, wieder nach oben geht, springt nach dem Durchlaufen der Totpunktlage die Blattfeder nach oben, wobei unter der Kraft der Rückstellfeder 22 die Wippe 9 in die aus der Zeichnung ersichtliche Ausgangsstellung umschnappt.As soon as a tappet, e.g. a temperature sensor, acting on the actuating slide 16 goes up again, the leaf spring springs back after passing through the dead center position above, with the force of the return spring 22 snapping the rocker 9 into the starting position shown in the drawing.

Claims (3)

1. Sprungartig umschaltende Betätigungseinrichtung für elektrische oder pneumatische Schaltglieder mit einer einseitig eingespannten, der Betätigungskraft ausgesetzten Blattfeder, welche wenigstens einen das sprungartige Umschalten bewirkenden, als vorgespannte Totpunktfeder ausgebildeten Schenkel aufweist, dadurch gekennzeichnet, daß dem zu betätigenden Schaltglied (9)die Totpunktfeder (6) gegenübersteht und die Schaltkraft durch die Totpunktfeder auf das Schaltglied übertragen wird.1. Jumping switching device for electrical or pneumatic switching elements with a one-sided clamped, the actuating force exposed leaf spring, which has at least one jump-causing leg, designed as a pretensioned dead center spring, characterized in that the switching element (9) to be actuated, the dead center spring (6 ) faces and the switching force is transmitted to the switching element by the dead center spring. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Schaltglied (9) ein unter Federspannung (22) stehender Kipphebel (10,11) ist, welcher wenigstens einen einem ortsfesten Ventilsitz (14,15) gegenüberstehenden, vorzugsweise elastischen Schließkörper (12,13) trägt.2. Device according to claim 1, characterized in that the switching member (9) is a spring tension (22) standing rocker arm (10, 11) which at least one, preferably elastic closing body (12, 1) opposite a fixed valve seat (14, 15) 13) carries. 3. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß das Schaltglied eine um eine ortsfeste Achse (19) kippbare Wippe ist, welche an beiden Hebelarmen (10,11) je einen Schließkörper (12,13) trägt.3. Device according to claim 2, characterized in that the switching element is a rocker which can be tilted about a fixed axis (19) and which carries a closing body (12, 13) on each of the two lever arms (10, 11).
EP80100378A 1979-01-27 1980-01-25 Operating device for electrical or pneumatic switch Expired EP0013992B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2903188 1979-01-27
DE19792903188 DE2903188A1 (en) 1979-01-27 1979-01-27 ACTUATING DEVICE FOR ELECTRICAL OR PNEUMATIC SWITCHING LINKS

Publications (2)

Publication Number Publication Date
EP0013992A1 true EP0013992A1 (en) 1980-08-06
EP0013992B1 EP0013992B1 (en) 1982-02-10

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Family Applications (1)

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EP80100378A Expired EP0013992B1 (en) 1979-01-27 1980-01-25 Operating device for electrical or pneumatic switch

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EP (1) EP0013992B1 (en)
DE (2) DE2903188A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5466817A (en) * 1990-06-18 1995-11-14 E.R. Squibb & Sons, Inc. Benzopyran derivatives and heterocyclic analogs thereof as antiischemic agents

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH280959A (en) * 1951-02-27 1952-02-15 Doebeli Oskar Thermostat.
US3018345A (en) * 1960-12-15 1962-01-23 Honeywell Regulator Co Switch apparatus
DE1206685B (en) * 1961-05-03 1965-12-09 American Sterilizer Co Control or multi-way valve with snap action
FR1470009A (en) * 1965-02-24 1967-02-17 Gen Electric Device sensitive to the speed of rotation of a motor and controlling the supply of the latter's windings
US3353559A (en) * 1965-05-18 1967-11-21 Robertshaw Controls Co Snap acting pneumatic diverting relay
US3471663A (en) * 1967-05-16 1969-10-07 F & F Enterprises Inc String-operated switch construction
DE2062801A1 (en) * 1970-12-19 1972-06-29 Kissling Gmbh Switch for controlling gaseous flows

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH280959A (en) * 1951-02-27 1952-02-15 Doebeli Oskar Thermostat.
US3018345A (en) * 1960-12-15 1962-01-23 Honeywell Regulator Co Switch apparatus
DE1206685B (en) * 1961-05-03 1965-12-09 American Sterilizer Co Control or multi-way valve with snap action
FR1470009A (en) * 1965-02-24 1967-02-17 Gen Electric Device sensitive to the speed of rotation of a motor and controlling the supply of the latter's windings
US3353559A (en) * 1965-05-18 1967-11-21 Robertshaw Controls Co Snap acting pneumatic diverting relay
US3471663A (en) * 1967-05-16 1969-10-07 F & F Enterprises Inc String-operated switch construction
DE2062801A1 (en) * 1970-12-19 1972-06-29 Kissling Gmbh Switch for controlling gaseous flows

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5466817A (en) * 1990-06-18 1995-11-14 E.R. Squibb & Sons, Inc. Benzopyran derivatives and heterocyclic analogs thereof as antiischemic agents

Also Published As

Publication number Publication date
DE3060183D1 (en) 1982-03-18
DE2903188A1 (en) 1980-07-31
EP0013992B1 (en) 1982-02-10

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