Belt tightener
A belt retractor ( 10 ) of a seatbelt system comprises a belt tensioner ( 11 ) which is adapted to rotate a belt reel ( 14 ) of the belt retractor ( 10 ) accommodated in a belt retractor frame ( 12 ), wherein the belt retractor frame ( 12 ) is closed by a cover ( 16 ) on the tensioner side in the area of the spindle of the belt reel ( 14 ) and in the cover ( 16 ) a bearing for the belt reel ( 14 ) is provided. The cover ( 16 ) includes a first pot-shaped cover part ( 16 a ) which is mounted directly on the belt retractor frame ( 12 ) and has a side wall ( 24 ) merging into a flat portion ( 26 ). In the flat portion ( 26 ) an opening ( 32 ) is spared and a second cover part ( 16 b ) is provided which engages in the opening ( 32 ) in the first cover part ( 16 a ) and on which a bearing ( 40 ) is formed in which an end ( 42 ) of the spindle of the belt reel ( 14 ) is supported.
1. A belt retractor ( 10 ) of a seatbelt system, comprising a belt tensioner ( 11 ) which is adapted to rotate a belt reel ( 14 ) of the belt retractor ( 10 ) accommodated in a belt retractor frame ( 12 ), wherein the belt retractor frame ( 12 ) is closed by a cover ( 16 ) on the tensioner side in the area of the belt reel ( 14 ), wherein the cover ( 16 ) includes a first pot-shaped cover part ( 16 a ) which is mounted directly on the belt retractor frame ( 12 ) and which has a side wall ( 24 ) merging into a flat portion ( 26 ), and wherein an opening ( 32 ) is spared in the flat portion ( 26 ) and a second cover part ( 16 b ) which engages in the opening ( 32 ) in the first cover part ( 16 a ) and at which a bearing ( 40 ) is formed in which an end ( 42 ) of the spindle of the belt reel ( 14 ) is supported.
2. The belt retractor according to claim 1 , wherein the second cover part ( 16 b ) is configured to be resilient.
3. The belt retractor according to claim 1 , wherein the second cover part ( 16 b ) has a positioning structure ( 34 ) by means of which a radial position of the second cover part ( 16 b ) relative to the first cover part ( 16 a ) is defined.
4. The belt retractor according to claim 3 , wherein the positioning structure ( 34 ) has at least one projection ( 35 ) which abuts on the inner edge of the opening ( 32 ) in the first cover part ( 16 a ).
5. The belt retractor according to claim 4 , wherein the projection ( 34 ) is formed to be circumferential.
6. The belt retractor according to claim 1 , wherein the first cover part ( 16 a ) is made from metal and the second cover part ( 16 b ) is made from plastic.
7. The belt retractor according to claim 6 , wherein the first cover part ( 16 a ) is made from steel.
8. The belt retractor according to claim 1 , wherein the bearing ( 40 ) is formed centrally relative to the positioning structure ( 34 ) on the second cover part ( 16 b ).
9. The belt retractor according to claim 1 , wherein portions of the second cover part ( 16 b ) extend in the radial direction in parallel to the flat portion ( 26 ) of the first cover part ( 16 a ).
10. The belt retractor according to claim 1 , wherein the first cover part ( 16 a ) is welded to the belt retractor frame ( 12 ).
11. The belt retractor according to claim 1 , wherein a drive wheel ( 15 ) of the belt tensioner ( 11 ) arranged concentrically to the spindle of the belt reel ( 14 ) is accommodated beneath the cover ( 16 ).