device for tensioning safety belts
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Description
The invention relates to a device for tensioning safety belts, comprising a housing, a pyrotechnic propellant charge (3), which is placed inside the housing (1) and which acts upon a piston (5) mounted inside the housing (1) an a manner that enables it to be displaced. An especially compact and versatilely applicable design can be achieved by virtue of the fact that the piston (5) is actively connected to a pull strip (13) that is wound onto a drive wheel (11), which is connected to an actuating shaft (16) designed for exerting a torque onto a winding device, which is coupled to the device and which is provided for winding the safety belt.
[FR]
L'invention concerne un dispositif permettant de tendre des ceintures de sécurité, comprenant un boîtier, une charge propulsive (3) pyrotechnique disposée dans le boîtier (1), qui agit sur un piston (5) monté mobile dans le boîtier (1). L'invention permet de parvenir à une conception particulièrement compacte et permettant des utilisations multiples, du fait que le piston (5) coopère avec une bande de traction (13), qui est enroulée sur un disque d'entraînement (11), relié à un arbre d'actionnement (16), conçu de manière à exercer un couple sur un dispositif d'enroulement accouplé audit dispositif, pour la ceinture de sécurité.
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