EP1002326A1 - Fuse with coding - Google Patents
Fuse with codingInfo
- Publication number
- EP1002326A1 EP1002326A1 EP98947420A EP98947420A EP1002326A1 EP 1002326 A1 EP1002326 A1 EP 1002326A1 EP 98947420 A EP98947420 A EP 98947420A EP 98947420 A EP98947420 A EP 98947420A EP 1002326 A1 EP1002326 A1 EP 1002326A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuse
- coding
- holder
- tongue
- nominal current
- 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.)
- Granted
Links
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
- H01H85/24—Means for preventing insertion of incorrect fuse
Definitions
- the invention relates to a fuse with a fuse holder according to the preamble of claim 1.
- Such a fuse with a fuse holder is known from DE 38 40 511 C2.
- This known fuse has a fuse holder that contains a fuse link for a certain rated current.
- the fuse link can be inserted into a shaft in the fuse housing, the fuse containing a coding device.
- the inner contour of the shaft of the fuse holder is adapted to the outer contour of the fuse link, an adapter bracket being required to accommodate fuse links with a lower nominal current value.
- an automatic coding is provided according to the invention, which ensures that the fuse holder can only be inserted into the shaft in the housing of the fuse if there is a suitable fuse link in the fuse holder. If a fuse link with an excessively high nominal current is incorrectly inserted into the fuse holder, which poses a danger to a line network not designed for this nominal current, the fuse holder with the wrong fuse insert cannot be inserted into the shaft.
- Figure 1 is a partially broken side view of the housing of a fuse with an inserted fuse holder, with a fuse insert with a small nominal current is in the fuse holder.
- Figure 2 is a plan view, partly in section, of the fuse holder and the fuse of Fig. 1.
- FIG. 3 shows a side view as in FIG. 1, a fuse link with a large rated current being located in the fuse holder;
- Fig. 5 is a view of a coding insert.
- the fuse link 6 has a head contact 8 and a foot contact 10.
- the diameter of the foot contact 10 depends in a standardized manner on the nominal current of the fuse link 6; Fuse links 6 with high nominal currents have foot contacts 10 with large diameters and fuse links with small nominal currents have those with small diameters.
- the fuse holder 4 is removably accommodated in a shaft 12 in the housing of the fuse 1.
- the shaft 12 is a fixed part of the housing of the fuse 1 and takes the fuse holder 4 with little lateral play. In the shaft 12, the fuse holder 4 can only be moved in the direction of its longitudinal axis, which is also the longitudinal axis of the shaft 12.
- the fuse holder 4, which is otherwise made of insulating plastic, contains a conductive head contact rail 14, which leads the current to the head contact 8 of the fuse link 6.
- the foot contact 10 of the fuse link 6 is connected to an elastic spring contact 16.
- the spring contact 16 leads to the second connection terminal of the fuse 1.
- the fuse holder 4 is provided on one of its four long sides, preferably on the side opposite the head contact rail 14, with a resilient coding tongue 20, one end of which is firmly connected to the compact head part of the fuse holder 4.
- the other, free end of the resilient coding tongue (tongue) 20 is provided with an extension 22 which faces the interior of the fuse holder 4 and which, when the fuse link 6 is inserted, rests against its foot contact 10.
- the resilient coding tongue 20 and the projection 22 are dimensioned such that the free end of the tongue 20 is located in a fuse link 6 with a small diameter of the foot part, that is to say with a small nominal current does not protrude beyond the level of the corresponding long side of the fuse holder 4.
- the fuse holder 4 with the fuse link 6 with a small nominal current can therefore be inserted into a shaft 12 with an essentially rectangular cross section, in which no cutout for the resilient coding tongue 20 is provided.
- the wall of the shaft 12 opposite the longitudinal wall of the fuse holder 4 with the resilient coding tongue 20 is somewhat recessed, and the Clearance between an inserted fuse holder 4 and the wall of the shaft 12 is taken up by a coding insert 24 and essentially filled.
- the coding insert 24 is a separate part of the fuse 1, which snaps into the shaft 12 on the housing walls of the fuse 1 and is provided with claws for this purpose (FIG. 5).
- the coding insert 24 can also be removed from the fuse 1 or replaced, but preferably only with the aid of a tool.
- a fuse holder 4 with a fuse insert 6 for a higher nominal current, ie with a slightly protruding resilient coding tongue 20, is to be insertable into the fuse 1
- a coding insert 24 with a corresponding recess 26 is inserted in or next to the shaft 12 (FIG. 4 ) used for the resilient coding tongue 20.
- the recess 26 has a width which corresponds to the width of the resilient coding tongue 20, wherein of course the resilient coding tongue 20 can be as wide as the fuse holder 4 in extreme cases.
- the coding insert 24, as shown in FIGS. 1 and 2 does not need to have a pronounced recess 26, ie it can have a recess 26 of zero depth.
- a coding insert 24 is provided for the diameter of the foot contact 10, which gradually increases with increasing nominal current, in which the depth of the recess 26 corresponds exactly to the increase in the radius of the foot contact 10.
- a corresponding set of coding inserts 24 with recesses 26 of different depths can be provided for a set of fuse links 6 with different nominal currents and corresponding different foot contact diameters.
- the fuse holder 4 and the housing of the fuse 1 always remain the same for all nominal currents.
- the coding inserts 24 can with the standardized Identification colors for the different nominal currents can be provided.
Landscapes
- Fuses (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Earth Drilling (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Telephone Function (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29714132U | 1997-08-07 | ||
DE19734234 | 1997-08-07 | ||
DE1997134234 DE19734234C2 (en) | 1997-08-07 | 1997-08-07 | Securing with coding |
DE29714132U DE29714132U1 (en) | 1997-08-07 | 1997-08-07 | Automatic coding protection |
PCT/EP1998/005009 WO1999008303A1 (en) | 1997-08-07 | 1998-08-07 | Fuse with coding |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1002326A1 true EP1002326A1 (en) | 2000-05-24 |
EP1002326B1 EP1002326B1 (en) | 2002-04-10 |
Family
ID=26038933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98947420A Expired - Lifetime EP1002326B1 (en) | 1997-08-07 | 1998-08-07 | Fuse with coding |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1002326B1 (en) |
AT (1) | ATE216129T1 (en) |
AU (1) | AU9434698A (en) |
DE (1) | DE59803759D1 (en) |
DK (1) | DK1002326T3 (en) |
PL (1) | PL191068B1 (en) |
WO (1) | WO1999008303A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6002545B2 (en) * | 2012-11-01 | 2016-10-05 | 矢崎総業株式会社 | Fuse assembly structure |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2903826C2 (en) * | 1979-02-01 | 1985-02-14 | Lindner Gmbh, Fabrik Elektrischer Lampen Und Apparate, 8600 Bamberg | Electrical built-in fuse base for fuse links with end contact caps |
DE3406815A1 (en) * | 1984-02-24 | 1985-09-12 | Klaus 8600 Bamberg Bruchmann | SWITCH LOCKING UNIT |
DE3439437A1 (en) * | 1984-10-27 | 1986-04-30 | R. Stahl Schaltgeräte GmbH, 7118 Künzelsau | SECURING ELEMENT |
DE3513462A1 (en) * | 1985-04-15 | 1986-10-16 | Klaus 8600 Bamberg Bruchmann | SWITCH LOCKING UNIT |
DE3840511A1 (en) * | 1988-02-04 | 1989-08-24 | Lindner Gmbh | Electrical combination fuse switch |
-
1998
- 1998-08-07 AU AU94346/98A patent/AU9434698A/en not_active Abandoned
- 1998-08-07 PL PL338471A patent/PL191068B1/en not_active IP Right Cessation
- 1998-08-07 DK DK98947420T patent/DK1002326T3/en active
- 1998-08-07 AT AT98947420T patent/ATE216129T1/en not_active IP Right Cessation
- 1998-08-07 WO PCT/EP1998/005009 patent/WO1999008303A1/en active IP Right Grant
- 1998-08-07 DE DE59803759T patent/DE59803759D1/en not_active Expired - Fee Related
- 1998-08-07 EP EP98947420A patent/EP1002326B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9908303A1 * |
Also Published As
Publication number | Publication date |
---|---|
DK1002326T3 (en) | 2002-07-08 |
WO1999008303A1 (en) | 1999-02-18 |
ATE216129T1 (en) | 2002-04-15 |
PL338471A1 (en) | 2000-11-06 |
PL191068B1 (en) | 2006-03-31 |
AU9434698A (en) | 1999-03-01 |
EP1002326B1 (en) | 2002-04-10 |
DE59803759D1 (en) | 2002-05-16 |
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