Pyrotechnic gas generator and corresponding childcare device

Abstract

The invention relates to a gas generator (2) for an air bag / air bags, comprising: at least one pyrotechnic charge (23) and means (25) for igniting / activating said charge (23) which are triggered when a predetermined condition is met, a vessel (21) which contains a pressurised gas (211) and the mouth of which is closed by means of a sealing element (211), and a gas exhaust opening (222) which communicates with at least one air bag (141, 142). According to the invention, the gas generator (2) further comprises a firing pin (24) which is located in a pipe (221), into which the gas exhaust opening (222) leads, and which, when the predetermined condition is met, can first be moved towards the sealing element (211) from an initial position into an open position by means of the combustion gases (231) generated by the pyrotechnic charge (23) so as to pierce said sealing element by means of piercing means (241) supported by said firing pin (24), wherein it is possible to bring said firing pin (24) back into the initial position by means of the pressurised gas (211) stored in the vessel (21) once the sealing element (211) has been pierced, the pressurised gas (211) escaping from the vessel (21) being directed towards said gas exhaust opening (222).

Description

technical field [0001] The field of the invention is childcare, and more specifically, devices capable of receiving children, in particular, in fixed positions. Background technique [0002] The invention relates in particular to a car seat intended to be fixed to a seat or bench of a motor vehicle. It may also be implemented in devices such as strollers, cabins, bicycle seats, and the like. [0003] More precisely, the present invention relates to the implementation of inflatable bags or airbags or elements for safety, commonly referred to as "airbags", wherein in the event of an impact force (in an accident situation) The inflation is automatically triggered to protect a child placed in the child care device. [0004] The use of "airbags" is well known, especially in the automotive field. In recent years, many other applications have been considered, and in particular for child car seats. [0005] For example, a car seat may contain two airbags, housed on or in the sho...

AI Technical Summary

Problems solved by technology

[0007] Documents describing airbags for car seats generally provide for the presence of means for detecting impact forces which control the triggering of gas generating means intended for airbag inflation, but do not provide information on these gas generating means any precision with respect to the operation (and specifically with regard to the manner in which the gas is delivered)

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