Seatbelt retractor for a seatbelt system and method for installing a seatbelt retractor

The belt retractor according to claim 1, wherein the spring cassette (30) is enclosed substantially completely by a tensioner casing (22).

The belt retractor according to claim 2, wherein the spring cassette (30) is mounted on the inside of the tensioner casing (22).

The belt retractor according to claim 2 wherein the tensioner casing (22) is mounted on the first end face (10a) of the retractor frame (10).

The belt retractor according to claim 1, wherein the spring cassette (30) is mounted on the retractor frame (10), in particular on the first end face (10a) thereof.

The belt retractor according to claim 1, wherein the spring cassette (30) includes a guiding portion (32) for a load transmission element (20) of the belt tensioner.

The belt retractor according to claim 6, wherein the guiding portion (32) is connected to a stop disk (24).

A method of fitting a belt retractor according claim 1, comprising the steps of:

• mounting the spring cassette (30) on a component of the belt tensioner, especially on an inside of a tensioner casing (22);
• and
• mounting the belt tensioner including the spring cassette (30) on the retractor frame (10), especially on an end wall (10a) of the retractor frame (10).

A method of fitting a belt retractor according claim 1, comprising the steps of:

• mounting the spring cassette (30) on an end wall (10a) of the retractor frame (10);
• and
• attaching the belt tensioner to the spring cassette (30) mounted on the end wall (10a) of the retractor frame (10).

The method according to claim 9, wherein the belt tensioner including a tensioner casing (22) is mounted on the end wall (10a) of the retractor frame (10) so that the spring cassette (30) is enclosed substantially completely by the tensioner casing (22).