DE7619023U1 - Double-sheathed NH fuse - Google Patents

Double-sheathed NH fuse

Info

Publication number
DE7619023U1
DE7619023U1 DE19767619023 DE7619023U DE7619023U1 DE 7619023 U1 DE7619023 U1 DE 7619023U1 DE 19767619023 DE19767619023 DE 19767619023 DE 7619023 U DE7619023 U DE 7619023U DE 7619023 U1 DE7619023 U1 DE 7619023U1
Authority
DE
Germany
Prior art keywords
shells
fuse
tight
fusible conductors
sheathed
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
DE19767619023
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.)
FRITZ DRIESCHER SPEZIALFABRIK fur ELEKTRIZITAETSWERKSBEDARF 5144 WEGBERG
Original Assignee
FRITZ DRIESCHER SPEZIALFABRIK fur ELEKTRIZITAETSWERKSBEDARF 5144 WEGBERG
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 FRITZ DRIESCHER SPEZIALFABRIK fur ELEKTRIZITAETSWERKSBEDARF 5144 WEGBERG filed Critical FRITZ DRIESCHER SPEZIALFABRIK fur ELEKTRIZITAETSWERKSBEDARF 5144 WEGBERG
Priority to DE19767619023 priority Critical patent/DE7619023U1/en
Publication of DE7619023U1 publication Critical patent/DE7619023U1/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00Protective 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
    • H01H85/02Details
    • H01H85/04Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05Component parts thereof
    • H01H85/165Casings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H69/00Apparatus or processes for the manufacture of emergency protective devices
    • H01H69/02Manufacture of fuses
    • H01H2069/027Manufacture of fuses using ultrasonic techniques
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00Protective 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
    • H01H85/0013Means for preventing damage, e.g. by ambient influences to the fuse
    • H01H85/0021Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices
    • H01H85/003Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices casings for the fusible element

Landscapes

  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Description

FRITZ DRIESCHER, SPEZIALFABRIK FÜR ELEKTRIZITÄTSWERKSBEDARF, 5144 WEGBERG, INDUSTRIESTRASSEFRITZ DRIESCHER, SPECIAL FACTORY FOR ELECTRICITY REQUIREMENTS, 5144 WEGBERG, INDUSTRIESTRASSE

Wegberg, den 14.6.1976Wegberg, June 14th, 1976

Doppelummantelte NH-SicherungDouble-sheathed NH fuse

Die Neuerung betrifft eine doppelummantelte NH-Sicherung mit einer vorgefertigten, von zwei Halbschalen gebildeten Innenhülle, die der Aufnahme von Messerkontakten, Schmelzleiter und Löschsandfüllung dient und von einem Kunstharz-Außenmantel druck- und spaltdicht umschlossen ist.The innovation concerns a double-sheathed NH fuse with a prefabricated inner sleeve formed by two half-shells, which can accommodate knife contacts, fusible conductors and quenching sand filling is used and is enclosed by a synthetic resin outer jacket pressure-tight and gap-tight.

Dieser Sicherungsaufbau ist dem Prinzip nach bekannt durch die PT-AS 1438 o53. Dort wurde bereits eine NH-Sicherung mit einer teilbaren Innenhülle aus einem wärmebeständigen Material, z.B. Keramik oder Glas beschrieben, die als Formbegrenzung für eine zweite äußere Kunststoffhülle dient.This fuse structure is known in principle from PT-AS 1438 o53. There was already an NH fuse there with a divisible inner cover made of a heat-resistant Material, e.g. ceramic or glass, which serves as a shape limit for a second outer plastic shell.

Der Neuerung lag die Aufgabe zugrunde, die Halbschalen vor dem Einbringen der Löschsandfüllung möglichst dicht und haltbar zu verbinden.The innovation was based on the task of making the half-shells as tight as possible and as tight as possible before the introduction of the extinguishing sand filling durable to connect.

Dies wird neuerungsgemäß dadurch erreicht, daß die Halbschalen aus einem thermoplastischen Kunststoff bestehen und nach Einlegen der durch Schmelzleiter verbundene Messerkontakte durch Ultraschallbehandlung zusammengeschweißt werden,According to the invention, this is achieved in that the half-shells are made of a thermoplastic material and after insertion the knife contacts connected by fusible conductors are welded together by ultrasound treatment,

Die Verbindung von thermoplastischen Halbschalen c.urch Ultraschallverschweißung ist hochwertig und kann vortexlhafterweise maschinell im Sinne einer zeit- una kostensparenden Massenproduktion bewerkstelligt werden.The connection of thermoplastic half-shells by ultrasonic welding is of high quality and can be vortexed by machine in the sense of time and cost-saving mass production be accomplished.

Ferner ist vorgesehen, daß an die Halbschalen Vorsprünge zur Lagefixierung von Messerkontakten und Grifflaschen angeformt sind.It is also provided that projections on the half-shells to fix the position of blade contacts and grip tabs are molded.

Die Neuerung wird anhand einer Zeichnung veranschaulicht.The innovation is illustrated with a drawing.

Fig. 1 zeigt die Innenhülle in Vorderansicht und Fig. 2 zeigt die Innenhülle in Draufsicht Fig. 3 zeigt eine EinzelheitFig. 1 shows the inner shell in front view and Fig. 2 shows the inner shell in plan view Fig. 3 shows a detail

Die kugelförmige Hülle besteht aus zwei spiegelbildlich geformten Halbschalen 1,2, die aus thermoplastischem Kunststoff gefertigt sind. Die beiden Ansätze 3, 4 umschließen die Kontaktmesser 5, 6. Die Lage der Kontaktmesser 5, 6 und diese verbindenden Schmelzleiter 7, 8 sind" andeutungsweise in Fig. eingezeichnet. An die Ansätze 3, 4 sind Vorsprünge 9, 1o angeformt. Die Vorsprünge 9, 1o besitzen außen Vertiefungen, in die die gespreizten Enden 11 der Grifflaschen 12 (Fig. 3) klemmend eingeschoben werden, so daß die Ansätze 3, 4 an die Kontaktmesser 5, 6 gedrückt werden und die Durchtrittsstelle abdichten. Ferner weisen die mittleren Vorsprünge 1o nach innen gerichtete Nocken 1o' auf, die in vorgesehene Vertiefungen in den Kontaktmessern 5, 6 eingreifen und diese gegen Verschieben in Längsrichtung arretieren.The spherical shell consists of two mirror-inverted half-shells 1,2 made of thermoplastic material are made. The two approaches 3, 4 enclose the contact blades 5, 6. The position of the contact blades 5, 6 and these connecting fusible conductors 7, 8 are indicated by way of illustration in FIG. The projections 9, 1o have depressions on the outside into which the spread ends 11 of the grip tabs 12 (Fig. 3) be inserted by clamping, so that the lugs 3, 4 are pressed against the contact blades 5, 6 and the passage point seal. Furthermore, the central projections 1o have inwardly directed cams 1o ', which are provided in recesses engage in the contact blades 5, 6 and lock them against moving in the longitudinal direction.

Der Fertigungsablauf kann in groben Zügen folgendermaßen beschrieben werden:The production process can be roughly described as follows will:

Die thermoplastischen Halbschalen 1, 2 werden einzeln im Spritzgußverfahren hergestellt. Die Schmelzleiter 7, 8 werden mit den beiden Kontaktmessern 5, 6 vorzugsweise durch Punktschweißen verbunden. Diese vorgefertigte Einheit wird in eine der Schalen gelegt, wobei die Nocken 1o' in Ausnehmungen der Kontaktmesser 5, eingreifen.The thermoplastic half-shells 1, 2 are individually injection-molded manufactured. The fusible conductors 7, 8 are preferably made with the two contact blades 5, 6 by spot welding connected. This prefabricated unit is placed in one of the shells, the cams 1o 'in recesses in the contact blades 5, intervention.

1Gn?? 1/..10.76 1Gn ?? 1 / .. 10.76

— *3 _- * 3 _

Nach Auflegen der zweiten Schale werden die Halbschalen
j& der Verbindungsebene 13 durch Ultraschallbehandlung
After placing the second shell, the half-shells become
j & of the connection plane 13 by ultrasonic treatment

miteinander verschweißt. Anschließend werden die ge- \ welded together. Then the \

spreizten Grifflascheftenden 11 federnd in die Vertiefungen jspread grip tabs 11 resiliently into the recesses j

der Vorsprünge 9 geschoben, wodurch sie in ihrer Lagethe projections 9 are pushed, placing them in place

fixiert sind. Schließlich wird die Innenhülle (1,2) nach jare fixed. Finally, the inner shell (1,2) according to j

Einbringen der Löschsandfüllung und Verschließen der Einfüllöffnung mit Kunstharz umgössen.Introducing the extinguishing sand filling and closing the filling opening encapsulated with synthetic resin.

Claims (2)

SchutzansprücheProtection claims 1. Doppe luininante It e NH-Sicherung mit einer vorgefertigten, von zwei Halbschalen gebildeten Innenhülle, die der Aufnahme von Messerkontakten, Schmelzleiter und Löschsandfüllung dient und von einem Kunstharz-Außenmantel druck- und spaltdicht umschlossen ist, dadurch gekennzeichnet, daß die Halbschalen (1,2) aus einem thermoplastischen Kunststoff bestehen und nach Einlegen der durch Schmelzleiter (7,8) verbundene Messerkontakte (5,6) durch Ultraschallbehandlung zusammengeschweißt werden.1. Doppe luininante It e NH fuse with a prefabricated, Inner shell formed by two half-shells, which accommodates knife contacts, fusible conductors and quenching sand filling serves and is enclosed pressure-tight and gap-tight by a synthetic resin outer jacket, characterized in that that the half-shells (1,2) consist of a thermoplastic material and after inserting the Blade contacts (5,6) connected by fusible conductors (7,8) welded together by ultrasonic treatment will. 2. NH-Sicherung nach Anspruch 1, dadurch gekennzeichnet, daß an die Halbschalen (1,2) mit Nocken (1ο1) bzw. Vertiefungen versehene Vorsprünge (9,1o) zur Lagefixierung von Messerkontakten (5,6) und Grifflaschen (12) angeformt sind.2. NH fuse according to claim 1, characterized in that on the half-shells (1,2) with cams (1ο 1 ) or depressions provided projections (9,1o) for fixing the position of blade contacts (5,6) and tabs (12 ) are molded. ? n.10.76? n.10.76
DE19767619023 1976-06-16 1976-06-16 Double-sheathed NH fuse Expired DE7619023U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19767619023 DE7619023U1 (en) 1976-06-16 1976-06-16 Double-sheathed NH fuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19767619023 DE7619023U1 (en) 1976-06-16 1976-06-16 Double-sheathed NH fuse

Publications (1)

Publication Number Publication Date
DE7619023U1 true DE7619023U1 (en) 1976-10-14

Family

ID=6666457

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19767619023 Expired DE7619023U1 (en) 1976-06-16 1976-06-16 Double-sheathed NH fuse

Country Status (1)

Country Link
DE (1) DE7619023U1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2844973A1 (en) * 1978-10-16 1980-04-24 Driescher Spezialfab Fritz High rupturing capacity fuse - with quenching sand enclosed in sleeve of specified thermoplastic resin
DE3609455A1 (en) * 1985-03-25 1986-10-30 Cooper Industries, Inc., Houston, Tex. SUBMINIATURE FUSE
FR2620567A1 (en) * 1987-09-15 1989-03-17 Legrand Sa Cartridge with knives for circuit cut-out
DE3725438C2 (en) * 1987-03-24 1994-06-01 Cooper Ind Inc Fuse
EP0621621A2 (en) * 1993-04-23 1994-10-26 Gould Electronics Inc. Current limiting fuses

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2844973A1 (en) * 1978-10-16 1980-04-24 Driescher Spezialfab Fritz High rupturing capacity fuse - with quenching sand enclosed in sleeve of specified thermoplastic resin
DE3609455A1 (en) * 1985-03-25 1986-10-30 Cooper Industries, Inc., Houston, Tex. SUBMINIATURE FUSE
DE3609455C2 (en) * 1985-03-25 1997-04-03 Cooper Ind Inc Fuse for an electrical circuit
DE3725438C2 (en) * 1987-03-24 1994-06-01 Cooper Ind Inc Fuse
FR2620567A1 (en) * 1987-09-15 1989-03-17 Legrand Sa Cartridge with knives for circuit cut-out
EP0621621A2 (en) * 1993-04-23 1994-10-26 Gould Electronics Inc. Current limiting fuses
EP0621621A3 (en) * 1993-04-23 1995-11-08 Gould Electronics Inc Current limiting fuses.

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