| 摘要 |
A pyromechanical disconnecting apparatus, in particular for battery shutoff in a motor vehicle, includes a housing ( 4 ) in which there is arranged an electrically conductive conductor bus ( 2 ), which is fashioned so as to be severable at a predetermined cut position ( 1 ) by a cutting chisel ( 6 ) driven by a pyrotechnic propellant charge. The conductor bus ( 2 ) is clamped in on its side facing away from the cutting chisel ( 6 ) by a locking bolt ( 5 ) inserted into the housing ( 4 ), and a receiving space ( 15 ) is arranged in the locking bolt ( 5 ) in the region of the predetermined cut position ( 1 ), into which receiving space the cutting chisel ( 6 ) bends the region of the conductor bus ( 2 ) severed by it, and the locking bolt ( 5 ) forms an external surface of the housing ( 4 ). In order to diminish cracking of the locking bolt and housing and for purposes of inspection to determine whether the disconnecting apparatus has tripped, it is proposed that a recess ( 13 ) be arranged in the locking bolt ( 5 ), which recess transpicuously connects the receiving space ( 15 ) with the atmosphere.
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