Belt retractor

A belt retractor, comprising:

• a belt reel,
• a safety belt that can be wound thereon to form a wound belt, and
• a pyrotechnic belt tensioner comprising a drive device which is guided in a tube and can be driven to perform a drive movement, and
• at least a first further subassembly which is arranged coaxially with the rotational axis of the belt reel and in series with the belt reel,
• wherein
• the tube has a straight linear section which extends in parallel to the rotational axis of the belt reel and the longitudinal axis of the first further subassembly, and is arranged on the side of the belt reel and the first further subassembly,
• wherein the linear section is dimensioned in length in such a way that it extends over the length of the belt reel in the direction of the rotational axis of the belt reel and over the length of the first further subassembly in the direction of the longitudinal axis, and
• wherein the tube has a free end extending and being bent from the straight linear section such that the free end of the tube is angled at 30 to 90 degrees from a longitudinal direction of the rotational axis of the belt reel, and
• wherein a gas generator is held in the free end.