EP3099538A1

EP3099538A1 - Device and method for activating a personal protection means for a vehicle, production method for producing the device, and personal protection system for a vehicle

Info

Publication number: EP3099538A1
Application number: EP15700362.5A
Authority: EP
Inventors: Klaus Heyer; Rudolf Heinz; Horst Jung; Uwe Iben; Werner Nitschke; Raed Hamada
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2014-01-27
Filing date: 2015-01-09
Publication date: 2016-12-07
Also published as: WO2015110300A1; JP2017504520A; US20160339865A1; US9834169B2; CN105934370A; DE102014201419A1; CN105934370B; KR20160113131A

Abstract

The invention relates to a device (106) for activating a personal protection means for a vehicle. The device (106) comprises a fuel element chamber (200) containing at least one fuel element which is designed to generate, by combustion, a hot gas for activating the personal protection means, wherein the fuel element chamber (200) has an outlet opening for discharging the hot gas into the personal protection means, and a pressure vessel (202) for storing a pressurized cold gas (504), wherein the pressure vessel (202) has at least one opening (302) for discharging the cold gas (504) in a controlled manner into the fuel element chamber (200).

Description

description

title

Device and method for activating a personal protection device for a vehicle, manufacturing method for producing the device, and

Personal protection systems for a vehicle

State of the art

The present invention relates to a device for activating a personal protection device for a vehicle and to a corresponding method, to a production method for producing such a device and to a personal protection system for a vehicle.

For many years, personal protective equipment such. B. restraint systems for the protection of the occupants of a vehicle in an accident to the prior art. Frequently, airbags are used whose airbag is inflated in the event of a collision by gas generated in gas generators. The gas generators are operated either pyrotechnically or via compressed gas or with a combination of both forms. In the combined version, the gas generators are also referred to as hybrid gas generators.

In order to cover the increased demands in recent years, 2- or 3-stage gas generators are now commonly used. In these, the outflowing gas quantity is defined during testing and can be released later in use, for example in two stages of 60% and 100%. To achieve a slight variability, z. B. a 3-stage airbag have a bypass or pin puller, which can be opened if necessary. EP 0 715 993 A2 describes a hybrid gas generator for

Safety systems in motor vehicles, in which a movable piston is provided for destroying a pressure vessel closing the bursting membrane.

Disclosure of the invention

Against this background, the approach presented here becomes one

A device for activating a personal protection device for a vehicle, a method for activating a personal protection device for a vehicle, furthermore a method of manufacturing a device for activating a personal protection device as well as a passenger protection system for a vehicle according to the main claims presented. Advantageous embodiments emerge from the respective subclaims and the following description.

A device for activating a personal protection device which comprises, in addition to a fuel element chamber for generating hot gas, a pressure vessel for dispensing cold gas coupled via an opening to the fuel element chamber, allows control of the amount of gas exiting in the personal protection device in terms of time and volume. For example, in the event of a collision, the amount of gas from the pressure vessel directly at the beginning of the collision or at a later time in the fuel assembly and from the fuel assembly in the personal protection means, eg. B. the airbag of an airbag, are delivered. Thus, the timing of the gas delivery by the device and the amount of gas can be defined.

The concept presented here allows an adaptability of a

Hybrid gas generator to an individual collision situation, without an increase in the number of existing ignition circuits required. For example, two ignition circuits are sufficient for the realization of the proposed concept. In the proposed individual adjustment of the amount of gas is a high potential, the protective function of the gas generator associated

Personal safety device to improve.

Advantageously, with the proposed here

Hybrid gas generator concept, the adaptivity of the amount of gas to be increased, at the same time already established light and small designs of

Hybrid generator can be maintained.

A device for activating a personal protection device for a vehicle is presented, the device having the following features: a fuel element chamber with at least one fuel element, which is designed to generate a hot gas by activating the combustion device

Personal protection means to produce, wherein the fuel assembly chamber has an outlet opening for discharging the hot gas in the personal protection means; and a pressure vessel for storing a pressurized cold gas, the pressure vessel having at least one opening for discharging the cold gas into the fuel chamber.

The device may be installed in the vehicle. In which

Personal protection may be a reversible or irreversible

Device of the vehicle to protect an occupant of the vehicle from injury in a collision of the vehicle act. The

Fuel element chamber can via the outlet directly or z. B. be coupled via a connecting line with the personal protection. The

For example, fuel assembly may be in tablet form and pyrotechnic ignited to initiate the gas producing combustion process. The hot gas generated by burning of the fuel assembly can be activated to activate the personal protection device through the outlet opening of

Fuel element chamber are passed into the personal protection. The pressure vessel may be coupled to the fuel assembly via the opening to direct the cold gas into the fuel assembly. According to one embodiment, a controlled discharge of the cold gas through the opening of the pressure vessel into the fuel element chamber can take place.

According to one embodiment of the device, the pressure vessel can be arranged within the fuel element chamber. For example, the

Pressure vessel have a smaller size than the fuel element chamber and be disposed completely within the fuel assembly chamber. In this way, the fluidic coupling of the pressure vessel with the

Fuel element chamber for multi-stage activation of the attached to the device personal protection means are realized with optimal space savings.

Furthermore, the device may comprise a valve for controlling a volume flow of the cold gas through the opening of the pressure vessel. The valve may be particularly suitable for partially or completely opening and / or closing the opening. With this embodiment, the temporal and volume supply of the personal protection means with the cold gas from the pressure vessel can be readily adapted to an individual collision situation.

For example, the valve can be arranged outside the pressure vessel and / or within the fuel element chamber. In addition to a favorable

Space savings can be effectively protected from damage in this embodiment, the valve.

According to one embodiment, the valve may be configured to cause, in a first valve position, a piston of the device movably disposed opposite the at least one opening of the pressure vessel to release the opening to allow the discharge of the cold gas into the fuel element chamber. The valve may be configured to cause the piston to close the opening in a second valve position to inhibit the discharge of the cold gas into the fuel assembly. In this way, the advantage can be achieved to control the volume flow of the cold gas as accurately as possible. According to one embodiment of the device, both the

Fuel element chamber and the pressure vessel have a ring shape. This allows the realization of the device in a compact and thus advantageous form, for example, toroidal.

Alternatively, the fuel assembly chamber and the pressure vessel may each have a tubular shape. For example, the fuel element chamber and the pressure vessel may each have a cylindrical shape and the opening may be arranged on an end face of the pressure vessel and the outlet opening may be arranged on an end face of the fuel element chamber. Also with this embodiment, the space required for the device space can be advantageously kept low. In addition, the device can be made particularly fast and inexpensive in this design.

In this case, the opening for discharging the cold gas at one of

Outlet opening facing away from the pressure vessel can be arranged. In this way, a connection for receiving a control signal for controlling an opening state of the opening for discharging the cold gas can be arranged on a side of the device facing away from the personal protection device.

Furthermore, a passenger protection system for a vehicle is presented, which has the following features: a device for activating a passenger protection device for a vehicle according to one of the preceding embodiments; and a personal protection means connected to the device for being activated via the hot gas and / or cold gas generated in the device.

A method for activating a personal protection device for a vehicle is also presented, the method having the following steps: Igniting at least one arranged in a fuel assembly chamber

Fuel assembly for generating a hot gas by burning the fuel assembly and discharging it into the personal protection device through an exhaust port in the fuel assembly to activate the personal protection means; and

Discharging a pressurized cold gas from a pressure vessel through at least one opening of the pressure vessel to the fuel chamber to further activate the personal protection means.

The method can be carried out, for example, by a corresponding device according to one of the embodiments explained above. Also by this embodiment of the invention in the form of a method, the object underlying the invention can be solved quickly and efficiently. For example, the step of discharging may occur at a predetermined time after the step of igniting, for. B. to extend the function of the personal protection means to an advantageous period or to activate the personal protection means in several successive stages. Also, the step of skipping may be repeatedly executed according to a number of activation stages.

Furthermore, a production method for producing a device for activating a personal protection device for a vehicle is presented, wherein the manufacturing method comprises the following steps:

Providing a fuel assembly chamber, at least one fuel assembly and a pressure vessel, wherein the fuel assembly is configured to generate a hot gas for activating the personal protection means by burning, the fuel assembly has an outlet opening for discharging the warm gas into the personal protection means and the pressure vessel for

Pre-charged a pressurized cold gas is formed and at least one opening for discharging the cold gas in the

Has fuel element chamber; and Arranging the at least one fuel assembly and the pressure vessel in the fuel assembly.

In the present case, a device can be understood as meaning an electrical device which processes sensor signals and outputs control and / or data signals in dependence thereon. The device may have an interface, which may be formed in hardware and / or software. In the case of a hardware-based embodiment, the interfaces can be part of a so-called system ASIC, for example, which contains a wide variety of functions of the device. However, it is also possible that the interfaces are their own integrated circuits or at least partially consist of discrete components. In a software training, the interfaces may be software modules that are present, for example, on a microcontroller in addition to other software modules.

The approach presented here will be described below with reference to the attached

Illustrated drawings by way of example. Show it:

Fig. 1 is a schematic diagram of a vehicle with a

Personal protection system according to an embodiment of the present invention;

Fig. 2 is a block diagram of a device for activating a

Passenger protection device for a vehicle, according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of the device for activating a

Personal protection means in exemplary tubular design;

Fig. 4 is a schematic diagram of the device for activating a

Personal protection means in exemplary annular design;

FIG. 5 is a detail view of the tubular device of FIG. 3, according to an embodiment of the present invention; FIG. FIG. 6 is a detail view of the annular device of FIG. 4, according to one embodiment of the present invention; FIG.

Fig. 7 is a detailed view of a valve control of the device for activating a personal protection means for a vehicle, according to a

Embodiment of the present invention;

Fig. 8 is a schematic diagram of a construction of the device for activating a personal protection means for a vehicle, according to a

Embodiment of the present invention;

9 is a flowchart of a method for activating a

Passenger protection device for a vehicle, according to an embodiment of the present invention; and

10 is a flowchart of a manufacturing method for manufacturing a device for activating a personal protection device for a vehicle, according to an embodiment of the present invention.

In the following description of favorable embodiments of the present invention are for the in the various figures

represented and similar elements acting the same or similar

Reference numeral used, wherein a repeated description of these elements is omitted.

FIG. 1 shows, on the basis of a schematic diagram, a vehicle 100 equipped with a personal protection system 102 according to an exemplary embodiment of the present invention. The vehicle 100 may be a road-bound vehicle such as a passenger car or a truck. The personal protection system 102 is installed in the vehicle 100 and includes a personal protection device 104 and a device 106 coupled to the personal protection device 104 for activating the personal protection device 104. The personal protection system 102 is configured here in order to protect an occupant of the vehicle 100 from injury in the event of a collision of the vehicle 100. For this purpose, the personal protection means 104 is embodied here as an airbag, more precisely as a front airbag arranged, for example, in the steering wheel of the vehicle 100. The device 106 is a hybrid gas generator which is designed to supply an airbag 104 of the airbag in the event of a collision both with pyrotechnically produced hot gas and with cold gas stored in a pressure vessel.

Other versions of the personal protection system 102, the on

based on hybrid gas generation are conceivable.

2 shows a block diagram of an exemplary embodiment of the device 106 for activating a personal protection device for a vehicle from FIG. 1. The device or the hybrid-gas generator 106 includes a

Fuel assembly 200, a pressure vessel 202, an igniter 204 and a valve 206. The fuel assembly 200 includes at least one

Fuel element 208, here by way of example a plurality of fuel assemblies 208, which are designed to generate by burning a hot gas for activating the personal protection means coupled to the device 106 (not shown here). The fuel assembly or elements 208 may be disposed at one or more suitable locations within the fuel assembly chamber 200. The pressure vessel 202 is designed to store a cold gas under pressure and to output it in a targeted manner in order to be able to further activate the personal protection means in addition to the hot gas generated via the fuel elements 208. The igniter 204 is configured to ignite at least one of the fuel assemblies 208 to initiate combustion of the fuel assemblies 208 to produce the hot gas. The valve 206 is configured to control a discharge of the cold gas from the pressure vessel as needed.

In the embodiment shown in FIG. 2, the pressure vessel 202 has a smaller circumference than the fuel cell 200 and is disposed entirely within the fuel chamber 200. According to one In an alternative embodiment, the pressure vessel 202 may also be disposed with a portion within the fuel chamber 200.

In the illustration in Fig. 2, the hybrid gas generator 106 via a

Interface, for example, a CAN bus of the vehicle, with a

Control device 210 connected. In the exemplary embodiment shown in FIG. 2, the controller 210 is configured to be a

indicating imminent or incipient collision of the vehicle

Collision signal 212 to receive and output via the interface with the device 106, an ignition signal 214 to the ignition device 204 and a valve control signal 216 to the valve 206. The device 106 is configured to selectively supply the associated personal protection means with the warm gas and the cold gas in response to the ignition signal 214 and the valve control signal 216.

FIG. 3 shows a schematic illustration of an exemplary tube embodiment of the hybrid gas generator 106 of the invention presented here. As the

Representation in Fig. 3, here are both the fuel element chamber 200 and the pressure vessel 202 is tubular. Again, the

Pressure vessel 202 has a smaller size than the fuel assembly 200 and is completely enclosed by the fuel assembly 200.

The fuel element chamber 200 tapers upwards in the shape of a bottle and runs out in a gas outlet formed by a plurality of outlet openings 300 for supplying gas to the connected personal protection device. The tubular pressure vessel 202 has at its lower end a plurality of openings 302 for discharging the cold gas from the pressure vessel 202 into the fuel assembly chamber 200. The pressure vessel 202 is in the

Fuel element chamber 200 arranged that the cold gas after exiting through the openings 302 laterally of the pressure vessel 202 in the

Fuel element chamber 200 flows upward and how the warm gas via the outlet 300 in the coupled personal protection device, such as an airbag, passes. In the exemplary hybrid gas generator 106 shown in FIG. 3, the pressure vessel 202 forms an inner portion separated from the pyrotechnic chamber 200. In the resting state of the device 106, the outlet 300 to the airbag is sealed by a bursting element, not shown here, which is destroyed by the pressure generated during combustion. The pyrotechnically generated gas can rupture the cover in the vehicle and activate the personal protection device, eg. B. inflate the airbag of the airbag.

The gas in the pressure vessel 202 can be discharged via the valve, not shown here at any time and with a defined amount of gas in the fuel assembly chamber 200 and from there into the personal protection.

FIG. 4 shows an example based on a further schematic illustration

Ring design of the hybrid gas generator 106 of the invention presented here. Here, both the fuel element chamber 200 and the pressure vessel 202 are formed toroidal, which is why the expression "donut shape" is used for descriptive description of this gas generator construction.

Again, the pressure vessel 202 has a smaller circumference than the fuel assembly chamber 200 and is completely enclosed by the fuel assembly chamber 200 with the fuel assemblies 208. As with the straight

In this case, the pressure vessel 202 again has at least one opening 302 for discharging the cold gas from the pressure vessel 202 into the fuel element chamber 200 in the lower area. Through the plurality of outlet openings 300, both hot gas from the fuel assembly chamber 200 and cold gas from the pressure vessel 202 to activate the connected personal protection means exits.

3 illustrates the gas outlet from the fuel element chamber 200 based on a detailed illustration of the exemplary tubular device 106. As already mentioned, the gas outlet 300 of the fuel element chamber 200 is preceded by a bursting element 500 in the form of, for example, a rupture disk or membrane. The fuel assemblies 208 are in tablet form, for example, as shown in FIG. In order to activate the personal protective device coupled to the device 106 in the event of a collision, the combustion causes the fuel assemblies 208 generates a hot gas 502, the pressure of which is sufficient to destroy the bursting element 300 and to enter the passenger protection device via the outlet 300. A flow path of the hot gas 502 from the fuel assembly chamber 200 is indicated by directional arrows in the illustration in FIG. 5.

The gas portion 502 of the pyrotechnics is activated, for example, by a squib of the device 106 and generates depending on the embodiment of the gas generator 106 about 40% to 60% of the maximum volume of gas. The pressure generated by the pyrotechnic combustion destroys the membrane or

Rupture disc 500 to the outside to the airbag. A cold gas quantity 504 located in the pressure tank 202 can then be delivered selectively, ie controlled or regulated, via the valve not shown here.

Fig. 6 shows in a further detailed illustration of the gas outlet in the exemplary annular embodiment of the gas generator 106 of Fig. 4. Again, the flow path of the gas through the fuel chamber 200 and following the destruction of the bursting element 500 from the exit in the direction of the personal protection means Arrows marked in the illustration.

FIG. 7 illustrates, by means of a further detailed illustration of the device 106, an exemplary method of producing gas in the adaptive hybrid generator 106. Shown is, on the one hand, the ignition device 204 of the device, here as a squib arranged at the bottom of the fuel element chamber 200

is trained. The squib 204 is designed to prevent combustion of the fuel elements, not shown here, for generating the hot gas portion of the

Hybrid gas generator 106 initiate. Via an electrical contact 700, the squib 204 is supplied with the required electrical voltage.

Further, the detail view in Fig. 7 shows the operation of a

Valve control of the adaptive hybrid generator 106 for targeted and controlled delivery of cold gas 504 from the pressure vessel 202 in the

Fuel assembly 200. For this purpose, the device 106 comprises means for releasing and locking the at least one opening 302 of the

Pressure vessel 202. This device includes next to the valve or pre-valve 206 a piston 702, which is arranged movable in relation to the at least one opening 302, and a spring element 706 arranged in a spring chamber 704 next to the piston 702. As the representation in FIG. 7 shows, the pilot valve 206 is outside of

Pressure vessel 202 in the interior of the fuel assembly 200 at the bottom thereof of the ignition device 204 arranged opposite. Via a further electrical contact 700, the valve 206 is supplied with electrical voltage. The valve 206 is formed in the embodiment shown in FIG. 7 as a ball valve and connected directly to the spring chamber 704. Of the

Piston 702 is configured to move beyond a position of pilot valve 206 in FIG

In cooperation with the spring 706, in a piston stroke direction 708 indicated by a double arrow in the illustration, it is moved relative to the opening 302 such that it partially or completely opens or closes the opening 302.

According to an exemplary embodiment of the hybrid gas generator presented here, about 50% of the gas quantity provided in the device 106 is generated when the squib 204 is activated by combustion of the fuel elements contained in the chamber 200. By controlling the pilot valve 206, the additional amount of gas contained in the pressure vessel 202 is released. Time of release and gas quantity are selectable, so adaptable to the situation. As with the other embodiments shown is the

Gas outlet 302 of the pressure vessel 202 to the chamber 200 with the tablets at one end - here the lower - of the pressure vessel 202. The gas outlet 302 can be closed by the piston 702. In the embodiment of the valve-controlled adaptive hybrid generator 106 shown in FIG. 7, the piston 702 is held open by the spring 706 in the position when the force on the piston 702 is balanced by the gap leakage. If the space 704 in which the spring 706 is relieved by the pilot valve 206 when it is open, the piston 702 closes the gas outlet 302. When the pilot valve 206, a vent hole of the spring chamber 704, not shown closes again, for example via a ball seat , the pressure is similar in the spring chamber 704 on the gap leaks again on; the piston 702 opens the gas outlet 302.

In the illustration in FIG. 7, the valve control of the gas generator 106 is shown at an operating point at which the pilot valve 206 is closed.

Accordingly, the piston 702 releases the gas outlet 302, and a predetermined volumetric flow of the cold gas 504 can flow out of the pressure vessel 202 into the fuel chamber 200 via the opening 302 and out of the latter into the coupled personal protection device, as illustrated by an arrow in the illustration. Is at a further operating point of the valve control, the pilot valve

206 open, the piston 702 closes the gas outlet 302, and the gas supply to the personal protection means is inhibited.

The amount of gas 504 from the pressure vessel 202 may be directly at the beginning of the collision or at a later time, for. B. 50 ms after collision, in the

Personal protection, such as the airbag of an airbag, are delivered. Thus, the time and gas quantity of the discharge of the cold gas 504 can be defined. According to one embodiment, the activation of the valve 206 at given times during a collision z. B. 10% or 20% of the total volume of the in the pressure vessel 202

stockpiled cold gases 504 are released into the personal protection.

FIG. 8 shows a schematic representation of an exemplary design of the invention

Valve-controlled hybrid gas generator 106. Shown is a bottom view with the first contact 700 and the second contact 700 for a

Plug connection of the gas generator for supplying the ignition element and the valve of the device 106 with electrical voltage. From the illustration in Fig. 8 it can be seen that the structure of the valve-controlled gas generator 106 presented here is designed so that existing gas generator shapes such as the donut shape or the tube shape can be maintained.

9 shows a flow chart of an embodiment of a method 900 for activating a personal protection device for a vehicle. The

Method 900 may be used in an apparatus for activating a

Personal protection device for a vehicle, as with reference to the figures 1 to 8 was presented. In a step 902, a control device coupled to the device outputs an ignition signal to an ignition device of the device via a suitable interface. In response to the ignition signal, the ignition device ignites a plurality of in one

Fuel element chamber of the device arranged fuel assemblies. A

Combustion of the fuel assemblies generates a hot gas for initial activation of a personal protection device coupled to the device.

After a predefined period of time, in a step 904, the controller outputs a valve control signal to a valve of the device via another suitable interface. In response to the valve control signal, the valve releases an opening of a pressure vessel of the device to the fuel assembly to provide further activation of the personal protection device

predetermined amount of cold gas from the pressure vessel in the

To let fuel element chamber to emerge. In a step 906, the valve closes the opening in response to a second valve control signal from the controller. After a further predetermined period of time, in a step 908, the valve again releases the opening in response to a third valve control signal from the controller to discharge another predetermined amount of cold gas from the pressure vessel into the fuel assembly.

10 shows a flow chart of an embodiment of a

Manufacturing method 1000 for producing a device for activating a personal protection device for a vehicle, as has been explained with reference to FIGS. 1 to 8. In a step 1002, a fuel assembly is used for

Producing hot gas by combustion of fuel elements, a plurality of fuel assemblies and a pressure vessel for storing cold gas provided. In a step 1004, the fuel assemblies and the pressure vessel are arranged in the fuel assembly so that both the fuel assemblies and the pressure vessel are completely separated from the fuel assembly

Fuel cell are enclosed. The arrangement of the individual

Components to each other is carried out so that a

Outlet opening of the fuel assembly chamber for discharging the hot gas in the personal protection means is located at an upper end of the device and an opening of the pressure vessel for discharging the cold gas in the

Fuel element chamber is located at a lower end of the device.

The embodiments described and shown in the figures are chosen only by way of example. Different embodiments may be combined together or in relation to individual features. Also, an embodiment can be supplemented by features of another embodiment.

Furthermore, the method steps presented here can be repeated as well as executed in a sequence other than that described.

If an exemplary embodiment comprises an "and / or" link between a first feature and a second feature, then this is to be read so that the embodiment according to one embodiment, both the first feature and the second feature and according to another embodiment either only first feature or only the second feature.

Claims

claims

A device (106) for activating a personal protection means (104) for a vehicle (100), the device (106) comprising: a fuel assembly (200) having at least one fuel assembly (208) adapted to pass through Burning a hot gas (502) to activate the personal protection means (104), the fuel assembly chamber (200) having an outlet opening (300) for venting the hot gas (502) into the personal protection means (104); and a pressure vessel (202) for storing a pressurized cold gas (504), the pressure vessel (202) having at least one opening (302) for discharging the cold gas (504) into the fuel assembly chamber (200).

The apparatus (106) of claim 1, wherein the pressure vessel (202) is disposed within the fuel assembly chamber (200).

A device (106) according to any one of the preceding claims including a valve (206) for controlling a volume flow of the cold gas (504) through the opening (302) of the pressure vessel (202).

The apparatus (106) of claim 3, wherein the valve (206) is disposed outside of the pressure vessel (202) and / or within the fuel chamber (200).

5. Device (106) according to claim 3 or 4, wherein the valve (206) is designed to cause, in a first valve position, an opening opposite the at least one opening (302) of the pressure vessel (202). movably arranged piston (702) of the device (106) releases the opening (302) to allow the discharge of the cold gas (504) into the

Allow fuel assembly (200), and in a second

Valve position to cause the piston (702) closes the opening (302) to the discharge of the cold gas (504) in the

To prevent fuel element chamber (200).

Apparatus (106) according to any one of the preceding claims, wherein the fuel assembly chamber (200) and the pressure vessel (202) each have an annular shape.

Device (106) according to one of the preceding claims, wherein the fuel assembly chamber (200) and the pressure vessel (202) are each formed cylindrical and the opening (302) on an end face of the pressure vessel (202) and the outlet opening (300) on an end face the fuel element chamber (200) is arranged.

A personal security system (102) for a vehicle (100), the personal security system (102) comprising: means (106) for activating a personal protection means (104) for a vehicle (100) according to any one of the preceding claims; and a personal protection means (104) connected to the device (106) for being activated via the hot gas (502) and / or cold gas (504) generated in the device (106).

A method (900) for activating a personal protection device (104) for a vehicle (100), the method (900) comprising the following steps:

Igniting (902) at least one fuel element (208) disposed in a fuel assembly chamber (200) to burn by burning the fuel assembly (208)

Fuel element (208) to produce a hot gas (502) and through an outlet opening (300) in the fuel assembly chamber (200) in the To release personal protective equipment (104) in order to activate the personal security device (104); and

Discharging (904) a pressurized cold gas (504) from a pressure vessel (202) through at least one opening (302) of the pressure vessel (202) to the fuel chamber (200) to further activate the personal protection means (104).

A manufacturing method (1000) for producing a device (106) for activating a personal protection device (104) for a vehicle (100), the manufacturing method (1000) comprising the following steps:

Providing (1002) a fuel assembly chamber (200), at least one fuel assembly (208) and a pressure vessel (202), wherein the fuel assembly (208) is configured to generate a hot gas (502) to activate the personal protection means (104) by burning; the fuel assembly (200) has an outlet port (300) for discharging the warm gas (502) into the personal protection means (104), and the pressure vessel (202) is configured to store a pressurized cold gas (504) and at least one orifice (302) Exhausting the cold gas (504) into the fuel assembly chamber (200); and

Arranging (1004) the at least one fuel assembly (208) and the pressure vessel (202) in the fuel assembly chamber (200).