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US 5,820,058 AGranted
Retractor for a vehicle safety belt
AssigneeTRW Occupant Restraint Systems GmbH & Co. KG
InventorsUwe Hirzel, Bernhard Frei, Albert Kinzel
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AssigneeTRW Occupant Restraint Systems GmbH & Co. KG
InventorsUwe Hirzel, Bernhard Frei, Albert Kinzel
Estimating the term…
A retractor for a vehicle safety belt is provided, comprising a housing, a load bearing ratchet pawl supported in the housing, and a belt drum rotatably mounted in the housing. The belt drum is provided with ratchet disks at its axial ends. The ratchet disks are coaxial with the belt drum and are provided with a ratchet toothing at its outer circumference, into which the ratchet pawl can be engaged for locking the belt drum in the direction of pay-off of belt webbing coiled on the belt drum. The belt drum is further provided with energy take-up means arranged in the power transmission path between the belt drum and the ratchet disks. This energy take-up means are adapted to allow rotation of the belt drum in relation to the ratchet disks in the pay-off direction under heavy strain.
A retractor for a vehicle safety belt comprising a housing, a load bearing ratchet pawl supported in said housing, and a belt drum rotatably mounted in said housing, said belt drum having axial ends provided with ratchet disks, each ratchet disk being coaxial with said belt drum and being provided with a ratchet toothing on its outer circumference, into which said ratchet pawl can be engaged for locking said belt drum against rotation in the direction of pay-off of belt webbing coiled on said belt drum, said belt drum being provided with energy dissipation means arranged in a force transmission path between said belt drum and said ratchet disks, said energy dissipation means being adapted to allow rotation of said belt drum in relation to said ratchet disks in said pay-off direction under heavy strain, said energy dissipation means including a torsion rod arranged within, and coaxially to, said belt drum, said torsion rod being connected on axial ends thereof with said ratchet disks in such a manner as to prevent relative rotation and between said ratchet disks is connected with said belt drum in such a manner as to prevent relative rotation.
A retractor for a vehicle safety belt comprising a housing, a load bearing ratchet pawl supported in said housing, and a belt drum rotatably mounted in said housing, said belt drum having axial ends provided with ratchet disks, each ratchet disk being coaxial with said belt drum and being provided with a ratchet toothing on its outer circumference, into which said ratchet pawl can be engaged for locking said belt drum against rotation in the direction of pay-off of belt webbing coiled on said belt drum, said belt drum being provided with energy dissipation means arranged in a force transmission path between said belt drum and said ratchet disks, said energy dissipation means being adapted to allow rotation of said belt drum in relation to said ratchet disks in said pay-off direction under heavy strain, said energy dissipation means including a torsion rod arranged within, and coaxially to, said belt drum, said torsion rod being connected at one axial end with one of said ratchet disks in such a manner as to prevent relative rotation and being connected at its other axial end with said belt drum in such a manner as to prevent relative rotation.
Dependencies are inferred from the claim text.