DE1588333A1 - Electrical fuse - Google Patents
Electrical fuseInfo
- Publication number
- DE1588333A1 DE1588333A1 DE19671588333 DE1588333A DE1588333A1 DE 1588333 A1 DE1588333 A1 DE 1588333A1 DE 19671588333 DE19671588333 DE 19671588333 DE 1588333 A DE1588333 A DE 1588333A DE 1588333 A1 DE1588333 A1 DE 1588333A1
- Authority
- DE
- Germany
- Prior art keywords
- fuse according
- electrically conductive
- fuse
- base
- silver
- 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.)
- Pending
Links
- 229910052709 silver Inorganic materials 0.000 claims description 12
- 239000004332 silver Substances 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 238000007605 air drying Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000011819 refractory material Substances 0.000 claims description 2
- 238000007650 screen-printing Methods 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 239000012799 electrically-conductive coating Substances 0.000 claims 3
- 229920002678 cellulose Polymers 0.000 claims 1
- 239000001913 cellulose Substances 0.000 claims 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 11
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/046—Fuses formed as printed circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
- H01H69/02—Manufacture of fuses
- H01H69/022—Manufacture of fuses of printed circuit fuses
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuses (AREA)
- Parts Printed On Printed Circuit Boards (AREA)
Description
Patentanwalt
Drpl.-Ph/s. W. Kern(^
5 Köln-Lindenthal
Stadtwaldgörfel 20-22Patent attorney
Drpl.-Ph / s. W. Kern (^ 5 Cologne-Lindenthal Stadtwaldgörfel 20-22
JOHIiSON, ΜΑΤΪΗΕΪ ε CO. LIMITED 78, Hatton Garden, London, EC. 1, EnglandJOHIiSON, ΜΑΤΪΗΕΪ ε CO. LIMITED 78, Hatton Garden, London, EC. 1, England
Elektrische SicherungElectrical fuse
Die Srfindung betrifft elektrische Sicherungen. Elektrische Sicherungseleraente werden häufig aus Silber hergestellt, teilweise weil Silber gute elektrische und "Wärmeleitfähigkeit besitzt, und teilweise, weil Silber bei hohen Teraperturen nicht oxydiert. Da Silber bei hohen Temperturen keiner Oxydation unterliegt, verkleinern sich die Querschnittsflachen des Elements allmählich beim Einsatz desselben und der Widerstand des Elements bleibt im wesentlichen konstant.The discovery concerns electrical fuses. Electric Fuse elements are often made of silver, in part because silver has good electrical and thermal conductivity, and partly because silver does not oxidize at high terapertures. There If silver is not subject to oxidation at high temperatures, the cross-sectional areas of the element gradually decrease during use the same and the resistance of the element remains essentially constant.
Bisher hat man Sicherungselemente aus Silberstreifen hergestellt, obwohl fUr niedrige Normungen Silberdraht verwendet wurde. Wen ein solches Sicherungselement aus Silberstreifen hergestellt wird, ■wird der Streifen normalerweise in der Mitt© eingekerbt, um eine Zone zu schaffen, die mit einem Einkerbungswiderstand behaftet ist und in welcher das "Schmelzen" oder "Zusammenbrechen11 der Sicherung eingeleitet wird.So far, fuse elements have been made from silver strips, although silver wire was used for low standards. Is Wen such a fuse element is made of silver streaks prepared ■ the strip is normally notched in the Mitt ©, in order to create a zone which is afflicted with an indent resistance and in which the "melting" or "collapse 11 is introduced to the backup.
Eine typische Sicherung umfasst einen Silberstreifen, welcher an zweiA typical fuse includes a silver stripe attached to two
-3-BAD ORIGINAL-3-BATH ORIGINAL
— * 008821/0721- * 008821/0721
Kappen angelötet oder angeschweisst ist, die von einander durch ein feuerfestes Rohr getrennt sind, welches normalerweise ein feuerfestes Pulver enthalt. Infolge der Brühigkeit des Silberstreifenelements muss der Streifen beim Zusammenbauen der Sicherung mit grosser Sorgfalt gehandhabt werden.Caps is soldered or welded, which are separated from each other by a refractory tube, which is normally a Contains refractory powder. Due to the consistency of the silver strip element, the strip must be used when assembling the fuse be handled with great care.
Eine erfindungsgemasse Sicherung umfasst eine Unterlage aus Isoliermaterial und einen Belag aus elektrisch leitendem l-'aterial, das eine Zone höheren "Widerstands hat. Diese Schicht des elektrisch leitenden Materials kann ein auf der Oberflache der Unterlage aufgebrachter Belag sein.A fuse according to the invention comprises a base made of insulating material and a covering of electrically conductive material that a zone of higher "resistance". This layer of electrically conductive material can be on the surface of the backing be applied coating.
Vorzugsweise wird der elektrisch leitende Belag auf die Unterlage als Film mittels eines Siebdruckverfahrens aufgebracht wobei sich jedoch auch übertragungsverfahren zu diesem Zweck benutzen lassen.The electrically conductive covering is preferably applied to the base as a film by means of a screen printing process, whereby however, transmission methods can also be used for this purpose.
Es hat sich herausgestellt, dass sehr zufriedenstellende Sicherungen fur höhere Normungen erhalten werden, wenn die Unterlage ein feuerfestes Material ist und der durch Siebdruck aufgebrachte Film dann auf der Unterlage eingebrannt wird. Der Film kann als pastenförmige Masse aufgebracht werden, die eine 1-a.schung aus Silber (in Korn- oder/und BlSttchenforra) und Glasteilchen (beispielsweise bis zu 10 Gewichtsprozent und vorzugsweise 5 Gewichtsprozent) in einem organischen Trtlger umfasst. Geeignete Unterlagsstoffe sind Glimmer, Glas und keramische Stoffe.It has been found to be very satisfactory backups for higher standards can be obtained if the base is a refractory material and then the screen-printed film is burned into the substrate. The film can be applied as a paste-like mass, which has a 1-layer of silver (in grain or / and flake shape) and glass particles (for example up to 10 percent by weight and preferably 5 percent by weight) in an organic carrier. Suitable underlay materials are mica, glass and ceramic materials.
Bei Sicherungen fttr niedrigere Normungen kann der Film als eine an der Luft trocknende Paste aufgebracht werden, die Silber (in Korn- und/oder BlSttchenforra) und ein Zellulosematerial, z.B. Ithylsellulose, umfasst.In the case of backups with lower standards, the film can be used as a air drying paste containing silver (in grain and / or flake form) and a cellulosic material, e.g. Ethyl cellulose.
0 0 9 8 2 1/0721 *. 0 0 9 8 2 1/0721 *.
Ein fur einen solchen ELlra geeigneter Trager ist beispielsweise ein Kunstharz, t.B. ein Epoxydharz. Die unterlage für Sicherungen HIr niedrigere Hormungen kann aus Papier oder einem Kunststoff bestehen.A carrier suitable for such an ELIra is, for example a synthetic resin, t.B. an epoxy resin. The base for backups HIr lower hormones can consist of paper or a plastic.
Erwiinshtenfalls kann die Schicht des elektrisch leitenden Materials zwischen zwei Lagen des Isoliermaterial eingeschichtet sein.If necessary, the layer of electrically conductive material be sandwiched between two layers of the insulating material.
TWie aus der vorangehenden Beschreibung zu ersten ist, besteht der Grundsatz der Erfindung darin, ein Sicherungselement zu schaffen, welches mittels eines Isoliermaterials verstärkt ist. T As is apparent from the foregoing description to first, is the principle of the invention is to provide a securing element, which is amplified by an insulating material.
BAD ORIGINAL -A- BATH ORIGINAL -A-
:09821/072': 09821/072 '
Claims (12)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2258566A GB1184056A (en) | 1966-05-20 | 1966-05-20 | Improved Fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1588333A1 true DE1588333A1 (en) | 1970-05-21 |
Family
ID=10181815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19671588333 Pending DE1588333A1 (en) | 1966-05-20 | 1967-04-04 | Electrical fuse |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1588333A1 (en) |
| GB (1) | GB1184056A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3044711A1 (en) * | 1980-11-27 | 1982-07-01 | Wickmann-Werke GmbH, 5810 Witten | FUSE PROTECTION |
| US4460888A (en) * | 1981-11-27 | 1984-07-17 | Dorman Smith Fuses Limited | Fuse |
| AT383697B (en) * | 1983-09-15 | 1987-08-10 | Wickmann Werke Gmbh | PROTECTIVE DEVICE FOR INTERRUPTING A CIRCUIT OF ELECTRICAL DEVICES, MACHINES ETC. |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8300581A (en) * | 1983-02-16 | 1984-09-17 | Hazemeijer Bv | COMPOSITION FOR A CURRENT LIMITING HIGH VOLTAGE MELT SAFETY. |
| US4626818A (en) * | 1983-11-28 | 1986-12-02 | Centralab, Inc. | Device for programmable thick film networks |
| US5097247A (en) * | 1991-06-03 | 1992-03-17 | North American Philips Corporation | Heat actuated fuse apparatus with solder link |
| US5914648A (en) * | 1995-03-07 | 1999-06-22 | Caddock Electronics, Inc. | Fault current fusing resistor and method |
-
1966
- 1966-05-20 GB GB2258566A patent/GB1184056A/en not_active Expired
-
1967
- 1967-04-04 DE DE19671588333 patent/DE1588333A1/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3044711A1 (en) * | 1980-11-27 | 1982-07-01 | Wickmann-Werke GmbH, 5810 Witten | FUSE PROTECTION |
| US4460888A (en) * | 1981-11-27 | 1984-07-17 | Dorman Smith Fuses Limited | Fuse |
| AT383697B (en) * | 1983-09-15 | 1987-08-10 | Wickmann Werke Gmbh | PROTECTIVE DEVICE FOR INTERRUPTING A CIRCUIT OF ELECTRICAL DEVICES, MACHINES ETC. |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1184056A (en) | 1970-03-11 |
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