| 摘要 |
A fuse component ( 1 ) has a fusible conductor ( 2 ) which extends in a gas filled cavity ( 3 ) within a cylindrical tube ( 4 ) between two end surfaces ( 8 ). Two end caps ( 5 ) of an electrically conductive material are applied to the ends of the tube ( 4 ) so that an electrical contact is produced with the fusible conductor ( 2 ). At at least one of the two ends of the tube ( 4 ), a sealing body of a plastic material, which is predominantly elastically compressible but at the same time capable of creep, is introduced into a gap between the base of the end cap and the end surface ( 8 ) of the tube ( 4 ) and into a portion of the cavity adjacent to the cap base. The sealing body has been compressed between the end surface ( 8 ) and the cap base during the manufacture of the fuse component ( 1 ) when positioning the end cap ( 5 ). The compressed sealing body ( 7 ) attempts to expand again, whereby it expands principally into the cavity ( 3 ). If a sudden pressure rise occurs in the cavity shortly after its introduction during the manufacturing process as a result of a temperature increase, it can occur that this overpressure balances out into the external surroundings via a temporarily formed passage between the tube, the sealing body and the end cap. The passage which is formed is then sealed again as a result of the ability of the plastic material to creep.
|
