Patent ID: 8596179

Claim:
A pyrotechnic drive unit with a cylinder tube ( 12 ) having an axial end ( 28 ), a piston ( 14 ) guided in said cylinder tube ( 12 ), a pyrotechnic igniter ( 16 ) which is adjacent to said piston ( 14 ) and constitutes said pyrotechnic drive, and a plastic part ( 18 ), wherein said plastic part ( 18 ) is injection-molded to said igniter ( 16 ) and to said axial end ( 28 ) of said cylinder tube ( 12 ) so that it fastens said igniter ( 16 ) to said cylinder tube ( 12 ) and tightly closes said axial end ( 28 ) of said cylinder tube ( 12 ), said plastic part ( 18 ) engaging said piston ( 14 ) in an initial position of said drive unit ( 10 ), wherein said plastic part ( 18 ) forms an adhesion connection with said piston ( 14 ).