Load-bearing belt retractor

Inventors: Bengt Dahlquist (Alingsås, SE); Arndt Söhnchen (Hamburg, DE); Lennart Pettersson (Bankeryd, SE); Ronald Jabusch (Elmshorn, DE); Hans-Jörg Langhoff (Bönningstedt, DE); Antto-Christian Glässer (Hasloh, DE); Alexandru Cirstea (Elmshorn, DE); Jens Ehlers (Horst, DE)

Assignee: Autoliv Development AB

B60R22/34 B60R2022/3402

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Quick Facts

Patent No.: US 12668204
App. No.: 18/279,746
Granted: Jun 30, 2026
Kind: B2

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Abstract

The invention relates to a load-bearing seat belt retractor for a seat structure of a vehicle seat. The seat belt retractor has two housing halves, between which functional modules of the seat belt retractor are arranged. One functional module is a belt spool with a winding axis, wherein a plurality of support plates oriented perpendicularly to the winding axis is provided on the functional modules, each said support plate having at least two locking noses, and the locking noses engage into corresponding locking holes in the two housing halves. The housing halves have beads and/or reinforcements directed toward the functional modules, and at least one section of a functional module and/or a section of a support plate is supported against the beads and/or reinforcements in at least one direction parallel to the winding axis.

Claims (19)

1 . A load-bearing belt retractor for a seat structure of a vehicle seat, wherein

the belt retractor has two housing halves, between which are arranged functional modules of the belt retractor, wherein

one functional module is a belt spool having a winding axis,

a plurality of support plates oriented perpendicularly to the winding axis is provided on the functional modules, each of said support plates having at least two locking noses, the locking noses engaging in corresponding locking holes in the two housing halves, the support plates being mounted on the functional modules and distinct from the housing halves, wherein

the housing halves have beads and/or reinforcements directed toward the functional modules, at least one section of a functional module and/or one section of a support plate being supported on the beads and/or reinforcements in at least one direction parallel to the winding axis.

2 . A seat belt retractor according to claim 1 , wherein in that the beads and/or reinforcements are formed by channel-like reinforcements on which the functional module or section of the support plate is supported, parallel to the winding axis, on one or two sides.

3 . A seat belt retractor according to claim 1 , wherein in that at least one of the housing halves has a closed bead which is stamped toward the functional modules and which has a cutout, a section of the functional module being supported in the cutout of the bead.

4 . A seat belt retractor according to claim 1 , wherein in that at least one of the locking holes has a fixing tongue.

5 . A seat belt retractor according to claim 4 , wherein in that the fixing tongue is oriented parallel to the winding axis, a tongue end of the fixing tongue being directed away from the belt spool functional module.

6 . A seat belt retractor according to claim 4 , wherein in that the two housing halves have a plurality of locking holes which each have a fixing tongue with a tongue end, the tongue ends of all the fixing tongues in the locking holes of the two housing halves being oriented in the same direction.

7 . A seat belt retractor according to claim 4 , wherein in that the fixing tongue ( 31 ) has a constant width.

8 . A seat belt retractor according to claim 4 , wherein in that the fixing tongue has a width which tapers toward the tongue end.

9 . A seat belt retractor according to claim 1 , wherein in that the functional module has tabs extending parallel to the winding axis, the housing halves each having at least one open bead, into which the tabs of the functional module are inserted.

10 . A seat belt retractor according to claim 1 , wherein in that a section of the functional module is supported on both sides in at least one closed bead of at one of the housing halves, said at least one closed bead being stamped away from the functional module.

11 . A seat belt retractor according to claim 1 , wherein in that at least one of the beads and/or reinforcements is formed by a rib oriented perpendicularly to the winding axis.

12 . A seat belt retractor according to claim 1 , wherein in that the seat belt retractor includes the functional module on which a C-shaped clip is arranged, two legs of the C-shaped clip being seated against the inside of the two housing halves, respectively, and a seat bar being able to be inserted into the clip and to be fastened to the clip and to the two housing halves.

13 . A seat belt retractor according to claim 1 , wherein in that one of the housing halves is designed with an L-shaped contour.

14 . A seat belt retractor according to claim 1 , wherein in that one of the housing halves is designed as a cover-shaped contour, with an overall height of less than 15 mm.

15 . A seat belt retractor according to claim 1 , wherein in that the two housing halves are directly connected by an insertion connection with tongues and corresponding slots.