DE643705C - Multipole thermal release - Google Patents
Multipole thermal releaseInfo
- Publication number
- DE643705C DE643705C DEK140435D DEK0140435D DE643705C DE 643705 C DE643705 C DE 643705C DE K140435 D DEK140435 D DE K140435D DE K0140435 D DEK0140435 D DE K0140435D DE 643705 C DE643705 C DE 643705C
- Authority
- DE
- Germany
- Prior art keywords
- release
- multipole
- lever
- thermal release
- insulating
- 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
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
Landscapes
- Thermally Actuated Switches (AREA)
Description
Es ist üblich, mehrphasige thermische Auslöser derart aufzubauen, daß man die Hebel der Einzelauslöser durch eine Isolierstoffauslöseleiste miteinander kuppelt. Als Material für diese Leiste kann man keramische Stoffe verwenden, die aber bei geringer Masse den Nachteil einer großen Zerbrechlichkeit aufweisen. Es empfehlen sich deshalb organische Isolierstoffe mit hoher Biege- und Schlagbiegefestigkeit bei geringerem spezifischem Ge\vicht. Diese Stoffe haben den Nachteil, daß sie unter Wärmeeinwirkung eine bleibende Längenänderung erleiden und dadurch die Genauigkeit des Auslösers herabsetzen bzw. eine Neueichung nach einiger Zeit notwendig machen.It is common practice to set up multi-phase thermal releases in such a way that one of the levers the single release is coupled to one another by means of a release strip made of insulating material. As material For this bar you can use ceramic materials, but with low mass the Have the disadvantage of great fragility. We therefore recommend organic ones Insulating materials with high flexural and impact resistance with a lower specific Weight. These substances have the disadvantage that they become permanent under the action of heat Suffer a change in length and thereby reduce the accuracy of the release or a new calibration is necessary after some time do.
Erfindungsgemäß soll deshalb die Übertragung zwischen Dehnungselement und den eigentlichen Auslöseeinrichtungen von der Isolierstoffauslöseleiste aus über einen Zwischenhebel erfolgen, der in der Nähe der Mitte an der Leiste angreift. Dann sind die Fehler gegenüber der bisherigen Anordnung, bei der einfach eine Verlängerung dieser Brücke in die Auslöseeinrichtungen eingriff, erheblich verkleinert.According to the invention, the transmission between the expansion element and the actual release devices from the insulating release strip done via an intermediate lever that engages the bar near the middle. Then the mistakes compared to the previous arrangement in which this bridge was simply extended in the release mechanisms intervened, considerably reduced in size.
Abb. ι zeigt eine derartige Anordnung, ι sind die strom durchfiossenen Ausdehnungselemente, deren Ausdehnung über die Hebel 2 auf die aus organischen Stoffen bestehende Isolierstoff auslöse] eiste 3 unter Einwirkung der Druckfedern 4 übertragen wird. Der Schub der Leiste bewirkt die Öffnung des Kontakthebels 5. Erfindungsgemäß greift in der Nähe der Mitte der Leiste 3 die Schubstange 6 an, die ihrerseits auf den Kontakthebel 5 einwirkt, so daß die Auswirkung der Längenänderung der Brücke auf das halbe Maß zurückgeht.Fig. Ι shows such an arrangement, ι are the flow-through expansion elements whose expansion via the lever 2 on the insulating material consisting of organic substances trip] ice 3 under action the compression springs 4 is transmitted. The thrust of the bar causes the contact lever 5 to open. According to the invention, it engages near the center of the bar 3, the push rod 6, which in turn on the contact lever 5 acts so that the effect of the change in length of the bridge is reduced to half the size.
Eine andere Lösung zeigt Abb. 2. Der ^0 Übertragungshebel 7 ist als Winkelhebel ausgebildet. Er greift einerseits etwa im Mittelpunkt der Leiste 3 an; auf der anderen Seite steuert er einen Klinkenkontakt 8. Sobald die Klinke abrutscht, öffnet sich der Kontakt 9.Another solution is shown in Fig. 2. The ^ 0 transmission lever 7 is formed as an angle lever. It attacks on the one hand approximately in the center of the bar 3; on the other hand, it controls a latch contact 8. As soon as the latch slips, the contact 9 opens.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK140435D DE643705C (en) | Multipole thermal release |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK140435D DE643705C (en) | Multipole thermal release |
Publications (1)
Publication Number | Publication Date |
---|---|
DE643705C true DE643705C (en) | 1937-04-15 |
Family
ID=7249663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEK140435D Expired DE643705C (en) | Multipole thermal release |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE643705C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE898030C (en) * | 1937-11-25 | 1953-11-26 | Weyer & Zander K G | Overcurrent heating time relay |
DE1010800B (en) * | 1952-05-16 | 1957-06-19 | Mach Outils & D Outil Procedes | Machine tool with a headstock that can be extended overhanging from its guides or that can be moved on a boom |
US3102933A (en) * | 1960-04-13 | 1963-09-03 | Berthier Emile Andre | Multipolar circuit maker and breaker |
-
0
- DE DEK140435D patent/DE643705C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE898030C (en) * | 1937-11-25 | 1953-11-26 | Weyer & Zander K G | Overcurrent heating time relay |
DE1010800B (en) * | 1952-05-16 | 1957-06-19 | Mach Outils & D Outil Procedes | Machine tool with a headstock that can be extended overhanging from its guides or that can be moved on a boom |
US3102933A (en) * | 1960-04-13 | 1963-09-03 | Berthier Emile Andre | Multipolar circuit maker and breaker |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE643705C (en) | Multipole thermal release | |
DE840732C (en) | Switch in which the moving contact is driven by a shaft via an actuating element and an insulating rod engaging it | |
DE666177C (en) | Device for remote measurement, in particular of water levels, with the aid of a tube containing mercury and a resistor | |
DE490372C (en) | Hand switch with automatic reset | |
DE511954C (en) | Auto switch | |
DE207973C (en) | ||
AT201322B (en) | Booking facility for a booking machine | |
DE628374C (en) | Electrical measuring or control device as a contact instrument with mechanically moved arms | |
DE502065C (en) | Electric maximum indicator | |
DE620536C (en) | Pressure device for inclination scales | |
DE401098C (en) | Transposition device for keyboard instruments | |
DE472741C (en) | Rudder arrangement with multiple oars | |
DE630757C (en) | Adjustable timer for gas burners | |
DE425972C (en) | Device for remote display of pointer positions, e.g. B. of steam, gas or other pressures acting on a contact member, e.g. B. a membrane, a lever system o. The like. Act | |
DE572188C (en) | Float switch drive for several consecutive switching operations | |
DE631861C (en) | Lever mechanism for electrical signal boxes | |
DE808493C (en) | Upper pan household scales with sliding weight | |
DE444329C (en) | Roller switch | |
DE332030C (en) | Wind chest for organs or the like | |
DE505163C (en) | Sheet metal strips as continuous conductors in contact sets for dialers | |
DE363739C (en) | Blackboard bridge scale with knee lever relief on castors | |
DE690844C (en) | Switch drive with remote-controlled compressed gas valves | |
DE621017C (en) | Device for displaying and registering the partial pressure of water vapor in the air | |
AT92456B (en) | Knocking device for bag filters. | |
DE1816676A1 (en) | Device for reading the balance beam position as well as for placing and removing weights in an automatic inclination balance |