GAR | CRS-41-05

Document Number CRS-41-05

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Document title	CRS restractor schematic
Date	6 Nov 2013			Technical drawing of child restraint system retractor.
Source(s)	VTI
Status
Rulemaking area(s)	UN R129 Enhanced Child Restraints
Meeting(s)	CRS \| Session 41 \| 6 Nov 2013 Agenda item 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.