EP0024594A1 - Fuse socket for bracing on supporting bars - Google Patents

Fuse socket for bracing on supporting bars Download PDF

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Publication number
EP0024594A1
EP0024594A1 EP80104646A EP80104646A EP0024594A1 EP 0024594 A1 EP0024594 A1 EP 0024594A1 EP 80104646 A EP80104646 A EP 80104646A EP 80104646 A EP80104646 A EP 80104646A EP 0024594 A1 EP0024594 A1 EP 0024594A1
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EP
European Patent Office
Prior art keywords
fuse
tab
screw
fuse base
tabs
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.)
Withdrawn
Application number
EP80104646A
Other languages
German (de)
French (fr)
Inventor
Franz Kost
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0024594A1 publication Critical patent/EP0024594A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H01H85/2005—Bases for supporting the fuse; Separate parts thereof for use with screw-in type fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H01H85/205—Electric connections to contacts on the base
    • H01H2085/2055—Connections to bus bars in an installation with screw in type fuses or knife blade fuses

Definitions

  • the invention relates to a fuse base, in particular for fuse links, which are held between the base and a screw cap, the holder of which has tabs on the front that can be operated for tensioning on busbars (DE-AS 10 85 604).
  • fuse bases In previously known designs, a relatively large amount of space is required, since the fuse bases can be removed from the rail by tilting or turning. To save construction volume, fuse bases are also screwed onto power rails. This requires drilling and tapping the rails.
  • the invention has for its object to develop a fuse base that can be placed on busbars with front operated tabs in a small space.
  • the solution to the described problem is that the tab on an operating pin is arranged in an increasingly rotationally fixed manner in its end region.
  • the operating pin can in particular be a screw which is notched at its free end. If you then press the screws to loosen the fuse base, the associated tab is securely taken along in its notched end area and thereby swung out. At the end of the actuation area of the screw, that is, at the end of the screw shaft, the tab is thus taken safely. At the same time, the tab becomes captive due to the notching.
  • the tab When the screw is tightened, the tab is first carried along until it finds increased resistance to twisting under the conductor rail, for example by a stop, and the tab is increasingly released when the screw is tightened further. Likewise, when loosening the screw, it is ensured that the tab is pivoted out at least in the end region, if it was not previously carried along due to the frictional force between screw thread and tab, when loosening.
  • the mounting of the fuse base is made easier if a spring element is arranged around the screw between its front side and the tab, which on the one hand stands on the tab and on the other hand on the base. This also secures the fuse base against loosening in the event of vibrations and heating play.
  • the spring element can be designed as a helical spring.
  • two tabs are arranged diagonally to a gutter in the bottom of the fuse base.
  • the gutter can be designed so that it just receives the busbar. When tightening and loosening the screws, the fuse base is then secured against twisting by the gutter. Expediently, the swivel path of the tabs is limited by stops.
  • the fuse base 1 according to FIG. 1 sits on a conductor rail 2 like a rider.
  • a screw cap of the usual type can be screwed into a so-called threaded goggles 3, which covers a fuse link and at the same time makes contact with the threaded goggles 3 and the outgoing terminal 4.
  • the foot contact of the fuse link is acted upon by the busbar 2.
  • tabs 5 are arranged on a screw 6. It is essential that the tab 5 is arranged on the screw 6 in such a way that it is increasingly non-rotatably connected in the end region of the screw shaft, as is achieved by notching at point 7 of the screw 6. This point 7 is to be provided where the tab releases the busbar 2 when it is released. It is expedient to use screws which are as short as possible, so that the end of the screw must then be scored.
  • the friction between the screw and the lug is increasingly increased in the notched area when turning further.
  • the effect of the notched screw can be compared with a coupling that engages at point 7.
  • a spring element 8 is arranged around the screws 6 between their front side and the tab 5, which rests on the one hand on the tab 5 and on the other hand on the base 1.
  • the spring element 8 is designed as a helical spring.
  • a groove 9 is formed on the bottom of the fuse base, which receives the mounting rail 2.
  • Two diagonally opposite tabs 5 are usually sufficient. This arrangement can be seen more clearly from FIG. 2.
  • the tabs 5 are first aligned parallel to the mounting rail 2. The tabs are then in the vicinity of point 7 according to FIG. 1. If the screws 6 are then tightened, the tabs 5 pivot under the mounting rail 2, where they can find a stop 10 on the base in the usual way. The screw 6 can then be tightened further and the tabs 5 brace against the mounting rail 2. To loosen the socket, the screws 6 are rotated in the opposite direction of rotation until the tabs 5 stand out from the mounting rail 2 and into the area of the screw shaft, where an increased friction between the screw and the tab takes it safely against its pivoting direction.
  • the friction is generally increased by the spring element 8, which promotes the safe entrainment of the tab 5.
  • the stop 10 can advantageously be supplemented by a stop 11 at right angles to the stop 10, as can be seen from FIGS. 1 and 2.
  • the stop 11 limits the pivoting movement when loosening.
  • the stops 10 and 11 can be formed by an angular recess in the fuse base.

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  • Fuses (AREA)
  • Control Of Electrical Variables (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Saccharide Compounds (AREA)

Abstract

Fuse mounting, in particular for fuse inserts which are held between the mounting and a screw cap, the fuse mounting holder having clips which can be operated from the front for clamping to live rails. It is intended that the clip (5) is in each case arranged connected in an increasingly rotationally fixed manner to a control spigot (6). <IMAGE>

Description

Die Erfindung betrifft einen Sicherungssockel, insbesondere für Sicherungseinsätze, die zwischen Sockel und einer Schraubkappe gehalten werden, dessen Halterung frontseitig bedienbare Laschen zum Verspannen an Stromschienen aufweist (DE-AS 10 85 604).The invention relates to a fuse base, in particular for fuse links, which are held between the base and a screw cap, the holder of which has tabs on the front that can be operated for tensioning on busbars (DE-AS 10 85 604).

Bei bisher bekanntgewordenen Ausführungen wird verhältnismäßig viel Platz benötigt, da die Sicherungssockel durch Kippen oder Drehen von der Schiene abzunehmen sind. Um Bauvolumen zu sparen, werden auch Sicherungssockel auf Stromschienen aufgeschraubt. Dies erfordert Bohren und Gewindeschneiden in den Schienen.In previously known designs, a relatively large amount of space is required, since the fuse bases can be removed from the rail by tilting or turning. To save construction volume, fuse bases are also screwed onto power rails. This requires drilling and tapping the rails.

Es ist auch bekannt, Sicherungssockel auf Stromschienen bei am Sicherungssockel unverdrehbar gehaltenen Laschen unter Eindrehen des Sicherungssockels selbst auf- bzw. abzusetzen (DE-AS 10 85 604). Hierbei wird zusätzlich Platz zum benachbarten Sicherungssockel benötigt.It is also known to mount or remove fuse bases on busbars when the tabs are held non-rotatably on the fuse base by screwing in the fuse base itself (DE-AS 10 85 604). This requires additional space to the adjacent fuse base.

Der Erfindung liegt die Aufgabe zugrunde, einen Sicherungssockel zu entwickeln, der auf Stromschienen mit frontseitig bedienbaren Laschen bei geringem Raumbedarf aufgesetzt werden kann. Die Lösung der geschilderten Aufgabe besteht darin, daß jeweils die Lasche an einem Bedienungszapfen in seinem Endbereich zunehmend drehfest verbunden angeordnet ist.The invention has for its object to develop a fuse base that can be placed on busbars with front operated tabs in a small space. The solution to the described problem is that the tab on an operating pin is arranged in an increasingly rotationally fixed manner in its end region.

Der Bedienungszapfen kann insbesondere eine Schraube sein, die an ihrem freien Ende verkerbt ausgebildet ist. Wenn man zum Lösen des Sicherungssockels dann die Schrauben betätigt, wird jeweils in ihrem verkerbten Endbereich die zugehörige Lasche sicher mitgenommen und dadurch ausgeschwenkt. Am Ende des Betätigungsbereiches der Schraube, also am Ende des Schraubenschaftes, wird die Lasche somit sicher mitgenommen. Zugleich wird die Lasche durch das Verkerben unverlierbar.The operating pin can in particular be a screw which is notched at its free end. If you then press the screws to loosen the fuse base, the associated tab is securely taken along in its notched end area and thereby swung out. At the end of the actuation area of the screw, that is, at the end of the screw shaft, the tab is thus taken safely. At the same time, the tab becomes captive due to the notching.

Zieht man die Schraube an, wird zunächst die Lasche mitgeführt, bis sie unter der Stromschiene beispielsweise durch einen Anschlag erhöhten Widerstand gegen Verdrehen findet und die Lasche beim weiteren Anziehen.der Schraube hinsichtlich dieser zunehmend freikommt. Ebenso wird beim Lösen der Schraube sichergestellt, daß die Lasche zumindest im Endbereich, falls sie nicht zuvor infolge der Reibungskraft zwischen Schraubgewinde und Lasche mitgenommen wurde, beim Lösen herausgeschwenkt wird.When the screw is tightened, the tab is first carried along until it finds increased resistance to twisting under the conductor rail, for example by a stop, and the tab is increasingly released when the screw is tightened further. Likewise, when loosening the screw, it is ensured that the tab is pivoted out at least in the end region, if it was not previously carried along due to the frictional force between screw thread and tab, when loosening.

Das Montieren des Sicherungssockels wird erleichtert, wenn um die Schraube zwischen deren Frontseite und der Lasche ein Federelement angeordnet ist, das einerseits auf der Lasche und andererseits am Sockel aufsteht. Der Sicherungssockel wird dadurch auch gegen Lösen bei Erschütterungen und Erwärmungsspiel gesichert. Das Federelement kann als Schraubenfeder ausgebildet sein.The mounting of the fuse base is made easier if a spring element is arranged around the screw between its front side and the tab, which on the one hand stands on the tab and on the other hand on the base. This also secures the fuse base against loosening in the event of vibrations and heating play. The spring element can be designed as a helical spring.

Es ist günstig, wenn zwei Laschen diagonal zu einer Rinne im Boden des Sicherungssockels angeordnet sind. Die Rinne läßt sich so ausbilden, daß sie gerade die Stromschiene aufnimmt. Beim Anziehen und beim Lösen der Schrauben wird der Sicherungssockel dann durch die Rinne gegen Verdrehen gesichert. Zweckmäßigerweise begrenzt man den Schwenkweg der Laschen durch Anschläge.It is advantageous if two tabs are arranged diagonally to a gutter in the bottom of the fuse base. The gutter can be designed so that it just receives the busbar. When tightening and loosening the screws, the fuse base is then secured against twisting by the gutter. Expediently, the swivel path of the tabs is limited by stops.

Die Erfindung soll anhand eines in der Zeichnung grob schematisch wiedergegebenen Ausführungsbeispiels näher erläutert werden:

  • In Figur 1 ist der Sicherungssockel in Seitenansicht, teilweise im Längsschnitt, wiedergegeben.
  • In Figur 2 ist der Sicherungssockel nach Figur 1 von unten gesehen dargestellt.
The invention will be explained in more detail with reference to an exemplary embodiment shown roughly schematically in the drawing:
  • In Figure 1, the fuse base is shown in side view, partially in longitudinal section.
  • FIG. 2 shows the fuse base according to FIG. 1 seen from below.

Der Sicherungssockel 1 nach Figur 1 sitzt reiterartig auf einer Stromschiene 2 auf. In einer sogenannten Gewinde- ).brille 3 kann eine Schraubkappe üblicher Art eingeschraubt werden, die einen Sicherungseinsatz abdeckt und zugleich Kontakt zur Gewindebrille 3 und zur Abgangsklemme 4 herstellt. Der Fußkontakt des Sicherungseinsatzes wird von der Stromschiene 2 her beaufschlagt.The fuse base 1 according to FIG. 1 sits on a conductor rail 2 like a rider. A screw cap of the usual type can be screwed into a so-called threaded goggles 3, which covers a fuse link and at the same time makes contact with the threaded goggles 3 and the outgoing terminal 4. The foot contact of the fuse link is acted upon by the busbar 2.

Im Sicherungssockel sind frontseitig bedienbare Laschen 5 an einer Schraube 6 angeordnet. Wesentlich ist, daß jeweils die Lasche 5 an der Schraube 6 so angeordnet ist, daß sie im Endbereich des Schraubenschaftes zunehmend drehfest verbunden ist, wie man es durch Kerbschläge an der Stelle 7 der Schraube 6 erzielt. Diese Stelle 7 ist dort vorzusehen, wo die Lasche beim Lösen die Stromschiene 2 freigibt. Zweckmäßigerweise verwendet man möglichst kurze Schrauben, so daß dann das Ende der Schraube zu verkerben ist.In the fuse base operable tabs 5 are arranged on a screw 6. It is essential that the tab 5 is arranged on the screw 6 in such a way that it is increasingly non-rotatably connected in the end region of the screw shaft, as is achieved by notching at point 7 of the screw 6. This point 7 is to be provided where the tab releases the busbar 2 when it is released. It is expedient to use screws which are as short as possible, so that the end of the screw must then be scored.

Die Reibung zwischen Schraube und Lasche wird im verkerbten Bereich beim Weiterdrehen zunehmend erhöht. Die Wirkung der verkerbten Schraube ist mit einer an der Stelle 7 einkuppelnden Kupplung zu vergleichen.The friction between the screw and the lug is increasingly increased in the notched area when turning further. The effect of the notched screw can be compared with a coupling that engages at point 7.

Um die Schrauben 6 ist jeweils zwischen deren Frontseite und der Lasche 5 ein Federelement 8 angeordnet, das einerseits auf der Lasche 5 und andererseits am Sockel 1 aufsteht. Das Federelement 8 ist im Ausführungsbeispiel als Schraubenfeder ausgebildet.A spring element 8 is arranged around the screws 6 between their front side and the tab 5, which rests on the one hand on the tab 5 and on the other hand on the base 1. In the exemplary embodiment, the spring element 8 is designed as a helical spring.

Am Boden des Sicherungssockels ist im Ausführungsbeispiel eine Rinne 9 ausgebildet, die die Tragschiene 2 aufnimmt. Zwei diagonal gegenüberliegende Laschen 5 reichen in der Regel aus. Diese Anordnung ist aus Figur 2 deutlicher zu ersehen.In the exemplary embodiment, a groove 9 is formed on the bottom of the fuse base, which receives the mounting rail 2. Two diagonally opposite tabs 5 are usually sufficient. This arrangement can be seen more clearly from FIG. 2.

Um den Sicherungssockel zu montieren, richtet man die Laschen 5 zunächst parallel zur Tragschiene 2 aus. Die Laschen befinden sich dann in der Nähe des Punktes 7 nach Figur 1. Zieht man dann die Schrauben 6 an, schwenken die Laschen 5 unter die Tragschiene 2, wo sie in üblicher Weise einen Anschlag 10 am Sockel finden können. Die Schraube 6 kann dann weiter angezogen werden und die Laschen 5 verspannen sich gegen die Tragschiene 2. Um den Siche-. rungssockel zu lösen dreht man die Schrauben 6 solange in entgegengesetzte Drehrichtung, bis sich die Laschen 5 von der Tragschiene 2 abheben und in den Bereich des Schraubenschaftes, wo eine erhöhte Reibung zwischen Schraube und Lasche entgegen ihrer Einschwenkrichtung sicher mitnimmt.To mount the fuse base, the tabs 5 are first aligned parallel to the mounting rail 2. The tabs are then in the vicinity of point 7 according to FIG. 1. If the screws 6 are then tightened, the tabs 5 pivot under the mounting rail 2, where they can find a stop 10 on the base in the usual way. The screw 6 can then be tightened further and the tabs 5 brace against the mounting rail 2. To loosen the socket, the screws 6 are rotated in the opposite direction of rotation until the tabs 5 stand out from the mounting rail 2 and into the area of the screw shaft, where an increased friction between the screw and the tab takes it safely against its pivoting direction.

Die Reibung wird generell schon durch das Federelement 8 erhöht, was die sichere Mitnahme der Lasche 5 fördert.The friction is generally increased by the spring element 8, which promotes the safe entrainment of the tab 5.

Wenn die Laschen 5 ausgeschwenkt sind, also wieder paralell. zur Tragschiene 2 ausgerichtet sind, kann der Sicherungssockel sicher abgenommen werden.When the tabs 5 are swung out, so again in parallel. are aligned with the mounting rail 2, the fuse base can be safely removed.

Der Anschlag 10 kann vorteilhafterweise durch einen Anschlag 11 im rechten Winkel zum Anschlag 10 ergänzt werden, wie es aus den Figuren 1 und 2 zu ersehen ist. Der Anschlag 11 begrenzt die Schwenkbewegung beim Lösen. Die Anschläge 10 und 11 können durch eine eckwinkelförmige Ausnehmung im Sicherungssockel gebildet werden.The stop 10 can advantageously be supplemented by a stop 11 at right angles to the stop 10, as can be seen from FIGS. 1 and 2. The stop 11 limits the pivoting movement when loosening. The stops 10 and 11 can be formed by an angular recess in the fuse base.

Claims (5)

1. Sicherungssockel, insbesondere für Sicherungseinsätze, die zwischen Sockel und einer Schraubkappe gehalten werden, dessen Halterung frontseitig bedienbare Laschen zum Verspannen an Stromschienen aufweist, dadurch gekennzeichnet, daß jeweils die Lasche (5) an einem Bedienungszapfen in seinem Endbereich zunehmend drehfest verbunden angeordnet ist.1. Fuse base, in particular for fuse links, which are held between the base and a screw cap, the holder of which has front-operable tabs for bracing on busbars, characterized in that the tab (5) is arranged in an increasingly rotationally fixed manner on an operating pin in its end region. 2. Sicherungssockel nach Anspruch 1, dadurch gekennzeichnet, daß der Bedienungszapfen eine Schraube (6) ist, die an ihrem freien Ende verkerbt ist.2. Fuse base according to claim 1, characterized in that the operating pin is a screw (6) which is notched at its free end. 3. Sicherungssockel nach den Ansprüchen 1 und 2; dadurch gekennzeichnet, daß um die Schraube (6) zwischen deren Frontseite und der Lasche (5) ein Federelement (8) angeordnet ist, das einerseits auf der Lasche (5) und andererseits am Sockel (1) aufsteht.3. fuse base according to claims 1 and 2; characterized in that a spring element (8) is arranged around the screw (6) between its front side and the tab (5), which rests on the one hand on the tab (5) and on the other hand on the base (1). 4. Sicherungssockel nach den Ansprüchen 1 und 3, dadurch gekennzeichnet, daß das Federelement (8) als-Schraubenfeder ausgebildet ist.4. Fuse base according to claims 1 and 3, characterized in that the spring element (8) is designed as a helical spring. 5. Sicherungssockel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß zwei Laschen (5) diagonal zu einer Rinne (9) im Boden des Sicherungssockels angeordnet sind.5. Fuse base according to one of claims 1 to 4, characterized in that two tabs (5) are arranged diagonally to a channel (9) in the bottom of the fuse base.
EP80104646A 1979-08-23 1980-08-06 Fuse socket for bracing on supporting bars Withdrawn EP0024594A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792934201 DE2934201A1 (en) 1979-08-23 1979-08-23 SECURING BASE FOR TENSIONING ON RAILS
DE2934201 1979-08-23

Publications (1)

Publication Number Publication Date
EP0024594A1 true EP0024594A1 (en) 1981-03-11

Family

ID=6079165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104646A Withdrawn EP0024594A1 (en) 1979-08-23 1980-08-06 Fuse socket for bracing on supporting bars

Country Status (8)

Country Link
EP (1) EP0024594A1 (en)
JP (1) JPS5635341A (en)
BR (1) BR8005294A (en)
DE (1) DE2934201A1 (en)
DK (1) DK358080A (en)
ES (1) ES252658Y (en)
GR (1) GR69861B (en)
NO (1) NO802474L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4838391B1 (en) * 2011-03-18 2011-12-14 直樹 山田 Root vegetables grater

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE813056C (en) * 1949-02-22 1951-11-26 Elge Verken Ab Electrical fuse element
DE837266C (en) * 1951-01-30 1952-04-21 Gustav Hensel Elektrotechnisch Fuse element seated like a rider on a power supply rail
DE1085604B (en) * 1955-04-07 1960-07-21 Gustav Hensel Elektrotechnisch Fuse element seated like a rider on a power supply rail
DE1886958U (en) * 1960-01-06 1964-02-06 Weber Ag Fab Elektro SECURING ELEMENT INTENDED FOR INSTALLATION ON LIVE RAILS.
DE2151642B2 (en) * 1971-10-16 1975-02-27 Hans 7500 Karlsruhe Schade Fuse base for row arrangement
DE7924047U1 (en) * 1979-08-23 1979-11-08 Siemens Ag, 1000 Berlin Und 8000 Muenchen Fuse base for clamping on mounting rails

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE813056C (en) * 1949-02-22 1951-11-26 Elge Verken Ab Electrical fuse element
DE837266C (en) * 1951-01-30 1952-04-21 Gustav Hensel Elektrotechnisch Fuse element seated like a rider on a power supply rail
DE1085604B (en) * 1955-04-07 1960-07-21 Gustav Hensel Elektrotechnisch Fuse element seated like a rider on a power supply rail
DE1886958U (en) * 1960-01-06 1964-02-06 Weber Ag Fab Elektro SECURING ELEMENT INTENDED FOR INSTALLATION ON LIVE RAILS.
DE2151642B2 (en) * 1971-10-16 1975-02-27 Hans 7500 Karlsruhe Schade Fuse base for row arrangement
DE7924047U1 (en) * 1979-08-23 1979-11-08 Siemens Ag, 1000 Berlin Und 8000 Muenchen Fuse base for clamping on mounting rails

Also Published As

Publication number Publication date
BR8005294A (en) 1981-03-04
ES252658U (en) 1980-11-16
GR69861B (en) 1982-07-19
NO802474L (en) 1981-02-24
DK358080A (en) 1981-02-24
DE2934201A1 (en) 1981-03-26
JPS5635341A (en) 1981-04-08
ES252658Y (en) 1981-05-16

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