Safety belt retractor having load limitation device

A seat belt retractor, load limiting technology, used in vehicle seat belts, belt tensioners, transport and packaging
CN102227342AActive Publication Date: 2011-10-26AUTOLIV DEV AB
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
AUTOLIV DEV AB
Publication Date
2011-10-26

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Abstract

The invention relates to a safety belt retractor comprising a two-part belt shaft comprising a first part (1) of the belt shaft on which the safety belt (2) is wound and a second part (5) of the belt shaft that can be blocked opposite a housing (8) of the safety belt retractor attached to the vehicle frame; and the safety belt retractor also includes a load limitation device (3) arranged between the first (1) and the second (5) part of the belt shaft, wherein the first (1) and the second part (5) of the belt shaft overlap each other axially at least in sections and a bearing ring (13) is provided in the region of the overlap.
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Description

technical field

[0001] The invention relates to a seat belt retractor with a load limiting device having the features of the preamble of claim 1 . Background technique

[0002] It is generally known that seat belt retractors have a load-limiting device, the purpose of which is to allow a limited forward movement of a passenger's load in the event of an accident. Accordingly, such a seat belt retractor comprises a two-part spool, and a load limiting device arranged between the two parts of the spool. The seat belt restraining the occupant is then fastened to one part of the belt shaft, while the other part of the belt shaft can be locked with respect to the housing of the seat belt retractor which is fixed to the motor vehicle. In the event of locking the belt and exceeding the force defined by the load limiting device, the part of the belt shaft which is fastened to the belt can be rotated in the belt withdrawal direction while triggering the load limiting device. Thereby,...

Claims

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