DE383460C - Overcurrent switch, in which a hot wire or band is kept permanently under tension by a spring lying in its direction - Google Patents

Overcurrent switch, in which a hot wire or band is kept permanently under tension by a spring lying in its direction

Info

Publication number
DE383460C
DE383460C DEK84507D DEK0084507D DE383460C DE 383460 C DE383460 C DE 383460C DE K84507 D DEK84507 D DE K84507D DE K0084507 D DEK0084507 D DE K0084507D DE 383460 C DE383460 C DE 383460C
Authority
DE
Germany
Prior art keywords
hot wire
band
under tension
overcurrent switch
kept permanently
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
Application number
DEK84507D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DEK84507D priority Critical patent/DE383460C/en
Application granted granted Critical
Publication of DE383460C publication Critical patent/DE383460C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/18—Electrothermal mechanisms with expanding rod, strip, or wire

Description

Die Erfindung betrifft einen Überstromschalter, der von einem Hitzdraht oder Heizband gesteuert wird und dessen Hitzdraht oder Hitzband durch eine in seiner Richtung liegende Feder dauernd unter Spannung7 gehalten wird. Für diese Schalter erfordern die Hebelübersetzungea · verhältnismäßig kleine Schaltwege. Dementsorechend sind auch etwaige Differenzen, hervorgerufen durch ίο Verschiedenheiten in den Bohrungen und Lagerbolzen von großem Einfluß auf die Genauigkeit der Apparate. Die Erfindung bezweckt, diesen Einfluß auf einfache Weise unwirksam zu machen einmai dadurch, daß durch kleine Achsdrücke die Abnutzung und Beanspruchung der Achsen auf ein Mindestmaß begrenzt wird, das andere ZiIaI, daß auch bei Durchmesserdifferenzen noch eine genaue Lage der Schalthebel gewährleistet ist.
ao Das Wesen der Erfindung besteht darin, daß ein auf den Unterbrecherkontakt einwirkender Doppelhebel mit seinem einen Arm an den Hitzdraht oder das Hitzband gelenkig angeschlossen ist und mit seinem anderen Arm unter der Wirkung" einer der den Hitzdraht oder das Hitzband gespannt haltenden Feder entgegenwirkenden Feder steht.The invention relates to an overcurrent switch which is controlled by a hot wire or heating band and the hot wire or heating band of which is kept permanently under tension 7 by a spring lying in its direction. For these switches, the lever ratios a · require relatively small switching paths. Any differences, caused by ίο differences in the bores and bearing bolts, also have a great influence on the accuracy of the apparatus. The aim of the invention is to make this influence ineffective in a simple manner, in that the wear and stress on the axles is limited to a minimum by means of small axle pressures, the other aim being that an exact position of the shift lever is guaranteed even with diameter differences.
ao The essence of the invention is that a double lever acting on the breaker contact is articulated with its one arm to the hot wire or the hot band and with its other arm is under the action of "one of the springs that counteracts the hot wire or the hot band tensioned .

In der Zeichnung bedeutet 1 den Hitzdraht,In the drawing, 1 means the hot wire,

. der auch in Bandform angeordnet werden kann. Dieser wird durch eine Feder 2.dauernd unter Spannung gehalten, so daß bei jedem Zustand des Hitzdrahtes das System ausgeglichen ist. Aus diesem Grunde sind auch die Achsdrücke, die auf den übertragenden Doppelhebel 3 ausgeübt werden, sehr gering, da der Übersetzungshebel nur den Hilfsschalter 4 betätigt, der einen verhältnismäßig geringen Kraftaufwand benötigt. LTm ferner Differenzen im Drehlager und Drehpunkt 7 und 8 nicht zur Auswirkung kommen zu fassen, wird noch eine kleine zusätzliche Feder 5 am Plebel 3 angebracht, die mit ihrem anderen Endpunkt an der Lagerbrücke 6 befestigt ist, so daß der Hebel bezüglich der. which can also be arranged in ribbon form. This is made permanent by a spring kept under tension so that whatever state the hot wire is in, the system is balanced is. For this reason, the axle pressures that are exerted on the transferring double lever 3 are very low, since the transmission lever only actuates the auxiliary switch 4, which is a relatively small one Effort required. Furthermore, differences in the pivot bearing and pivot point 7 and 8 do not have an effect grasp, a small additional spring 5 is attached to the plebel 3, which with her other end point is attached to the bearing bracket 6, so that the lever with respect to the

! Punkte 7 und 8 stets seine unverrückbare Lage beibehält.! Points 7 and 8 always maintains its immovable position.

Claims (1)

Patent-Anspruch :Patent claim: Überstromschalter, bei dem ein Hitzdraht oder Hitzband durch eine in seiner Richtung liegende Feder dauernd unter Spannung gehalten wird, dadurch gekennzeichnet, daß ein auf dem Unterbrecherkontakt einwirkender Doppelhebel (3; mit seinem einen Arm an den Hitzdraht oder das Hitzband (1) gelenkig angeschlossen ist und mit seinem anderen Arm unter der Wirkung einer der den Hitzdraht gespannt haltenden Feder (2) entgegenwirkenden Feder (5) steht.Overcurrent switch in which a hot wire or band is passed through in its The spring lying in the direction is kept under tension at all times, characterized in that that a double lever (3; with his one arm is hinged to the hot wire or the hot band (1) is and with his other arm stretched under the action of one of the hot wire holding spring (2) counteracting spring (5).
DEK84507D Overcurrent switch, in which a hot wire or band is kept permanently under tension by a spring lying in its direction Expired DE383460C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK84507D DE383460C (en) Overcurrent switch, in which a hot wire or band is kept permanently under tension by a spring lying in its direction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK84507D DE383460C (en) Overcurrent switch, in which a hot wire or band is kept permanently under tension by a spring lying in its direction

Publications (1)

Publication Number Publication Date
DE383460C true DE383460C (en) 1923-11-08

Family

ID=7235097

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK84507D Expired DE383460C (en) Overcurrent switch, in which a hot wire or band is kept permanently under tension by a spring lying in its direction

Country Status (1)

Country Link
DE (1) DE383460C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1514089B1 (en) * 1964-06-01 1971-05-13 Fritz Ennenda Glarus Knobel Electrothermally controlled switching relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1514089B1 (en) * 1964-06-01 1971-05-13 Fritz Ennenda Glarus Knobel Electrothermally controlled switching relay

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