Belt retractor for a vehicle safety belt
First Claim
1. A belt retractor comprising a safety belt reel (1) rotatably mounted on a frame and a load limiter (2) which acts on a rotational movement of the belt reel (1) and has adjustable energy consumption, said load limiter having a granulate (3) which is enclosed in a closed load limiter chamber (8) and consists of dry, granular solid, and at least one member (4), the member (4) and the granulate (3) being arranged so that they are rotatable in relation to each other,wherein the bulk density of the granulate (3) in the load limiter chamber (8) can be varied to adjust the energy consumption, and wherein the member is held fixed in a fixed position and the granulate is rotated in relation to the member.
3 Assignments
0 Petitions
Accused Products
Abstract
A belt retractor comprising a safety belt reel (1) rotatably mounted on a frame (7) and a load limiter (2) which acts on a rotational movement of the belt reel (1) and has a switchable energy consumption, said load limiter having a granulate (3), which is enclosed in a closed load limiter chamber (8) and consists of dry, granular solid, and at least one rotating member (4) which can be rotated relative to the granulate (3), the energy consumption resulting from shear forces acts between the grains of granulate.
13 Citations
30 Claims
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1. A belt retractor comprising a safety belt reel (1) rotatably mounted on a frame and a load limiter (2) which acts on a rotational movement of the belt reel (1) and has adjustable energy consumption, said load limiter having a granulate (3) which is enclosed in a closed load limiter chamber (8) and consists of dry, granular solid, and at least one member (4), the member (4) and the granulate (3) being arranged so that they are rotatable in relation to each other,
wherein the bulk density of the granulate (3) in the load limiter chamber (8) can be varied to adjust the energy consumption, and wherein the member is held fixed in a fixed position and the granulate is rotated in relation to the member.
Specification