US 12,431,315 B2
Current-limiting fuse
Benjamin Schibli, Olten (CH); and Guido Signer, Neuenkirch (CH)
Assigned to SCHURTER AG, Lucerne (CH)
Appl. No. 17/796,395
Filed by SCHURTER AG, Lucerne (CH)
PCT Filed Jan. 30, 2020, PCT No. PCT/EP2020/052356
§ 371(c)(1), (2) Date Jul. 29, 2022,
PCT Pub. No. WO2021/151498, PCT Pub. Date Aug. 5, 2021.
Prior Publication US 2023/0343540 A1, Oct. 26, 2023
Int. Cl. H01H 85/175 (2006.01); H01H 85/041 (2006.01); H01H 85/08 (2006.01)
CPC H01H 85/08 (2013.01) [H01H 85/0411 (2013.01); H01H 85/175 (2013.01); H01H 2085/0412 (2013.01); H01H 2085/0414 (2013.01)] 12 Claims
OG exemplary drawing
 
11. A method of manufacturing a current-limiting fuse, said method comprising:
a) providing an integrally formed electrically insulating housing with walls surrounding an interior space, with a first opening and with a second opening opposite to said first opening,
b) providing an electrically conducting, integrally formed conductor element comprising a melting section of reduced cross-section,
c) introducing the conductor element through said first opening or through said second opening, such that said melting section is located in the interior space, and
d) bending said conductor element to form a first terminal area and a second terminal area outside said housing, thereby sealing said first opening by a first sealing section of said conductor element and sealing said second opening by a second sealing section of said conductor element,
wherein said conductor element provided in step b) is a sheet metal having a protrusion embossed, wherein the sheet metal has a first bending edge delimiting said first terminal area, wherein the sheet metal has a second bending edge spaced from said protrusion by a distance allowing a tight fit of the second bending edge and the protrusion between opposite inner contours of said second opening, wherein the sheet metal includes a flat region between said second bending edge and the end opposite to the first terminal area,
wherein the step c) of introducing the conductor element comprises feeding said flat region of the conductor element from the interior space through said first opening,
wherein the step d) comprises establishing a third bending edge delimiting said second terminal area and then establishing a fourth bending edge in proximity to said second opening.