GAR | CRS-41-05

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Document Title	CRS restractor schematic
Reference Number	CRS-41-05
Date	8 Nov 2013
Summary	Technical drawing of child restraint system retractor.
Source(s)	VTI
Rulemaking Area(s)	UN R129 Enhanced Child Restraints
Meeting(s)	CRS \| Session 41 \| 6 Nov 2013 4. Work on phase 2 of UN R129
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Excerpts from session reports related to this document
CRS \| Session 41 \| 6 Nov 2013		4.3. Retractor definition (Sweden) CRS-41-05e Tommy PETERSSON from VTI shows us a drawing & explains the principle of a simple retractor. A wrap spring allows retracting the safety belt with a certain force and the retractor can be blocked via a “handle” in order to avoid rotation of the retractor during the crash. Dorel thinks that the definition of the spring is crucial since a high retracting force can be obtained at the beginning and after few rolls this force can decrease significantly. A constant force spring must be used. The finality of this subject is to decrease the difference between all test laboratories.