DE10059207A1 - Safety device on motor vehicle for protecting pedestrians has net covering preferably entire vehicle front area to about roof height in unfolding phase, lowering towards hood in second phase - Google Patents

Abstract

The device has a capture net (4) that is folded onto the vehicle in the rest state and holds the victim (9) of an impact with the vehicle in the region above the hood in the unfolded activated state. The net covers at least an area, preferably the entire front area of the vehicle, in a first phase of unfolding up to about roof height and lowers towards the good in a second phase while enveloping the person.

Description

The invention relates to a safety device on a motor vehicle for the protection of Pedestrians or the like according to the preamble of claim 1.

Such safety devices are provided on the vehicle to prevent a collision of a vehicle with a pedestrian, a cyclist, etc., who after a Collided with a vehicle thrown away at a relatively high speed the victim is adversely affected by a secondary impact on the road to avoid if possible.

A known, generic safety device on a motor vehicle for Protection of pedestrians is known from JP 8-258667 A, which comprises a safety net, that folded in the non-activated basic state on the vehicle body is arranged and in an activated, unfolded position of use with the Vehicle collided victim to reduce the risk of a secondary impact in the Area above a front hood of a front end area of the motor vehicle should hold.

Specifically, the safety net is coupled here with a U-bracket arrangement, which is located in the lower A- Column area is pivoted and which causes when activated Safety device over the network attached in the U-base area in an arc an impinging pedestrian is pulled over. However, a disadvantage of this structure is that that such a U-bracket requires increased design effort and in the Is generally incompatible with modern design requirements and therefore a visible one Change of conventional design and vehicle body required. moreover there is a considerable risk of injury to the vehicle due to the U-bracket colliding accident victims. In addition, such a bracket is particularly useful conventional vehicle bodies can be trained with only a small height extension, so that the network is relatively deep here, which creates the risk that the net cannot be placed over the pedestrian in all impact situations.  

Another safety device is also known from JP 8-258667 A just mentioned a vehicle for the protection of pedestrians known in the case of a Pedestrian collision with a vehicle on the front hood of an airbag being inflated. In order to keep the pedestrian on the front hood and thus impair the Avoiding pedestrians through a secondary impact is here as a fall arrester In addition, a network is provided which, after a primary collision, has been removed from the rear Front section should be placed over the pedestrian starting. As Guide means, a guide rope is provided which in the activated state Safety device on both sides of the vehicle between the front Roof area and a front bonnet area is stretched and about that Net from the front roof area towards the front The front hood area is unfolded. A disadvantage of this structure is that If activated, the network is immediately led down towards the front hood, see above that there is also a risk here that the network will not over all impact situations the pedestrian can be put up. The pedestrian is only caught here possible if this comes to rest directly on the front hood and there too remains, but this is not the rule.

The object of the invention is therefore to provide an alternative safety device on one Motor vehicle to protect pedestrians or the like, with which the Risk of a secondary impact can be significantly reduced.

This object is achieved with the features of claim 1.

According to claim 1, the safety net covers after a first deployment phase at least a partial area, preferably the entire front end area extensive and runs in the overlap area in the vertical direction of the vehicle seen at least approximately at roof level, with the safety net in one to the first unfolding phase subsequent second unfolding phase down to the The front hood can be lowered while wrapping the victim.

With such a structure it is advantageously achieved that the "probability of catching" a pedestrian, cyclist or the like colliding with the vehicle overall is relatively large, since the safety net here is already spread out a relatively large height from above on the front section and thus on the  Accident victim can be lowered. The pedestrian, cyclist or the like then gets caught on the network and is thereby held to the vehicle, causing the Overall, the risk of a secondary impact is significantly reduced.

In a preferred specific embodiment, the safety net is in the folded state arranged in a front roof area and can of starting there at least in a straight line, preferably in the first unfolding phase but unfolded in an arc towards a front front section become. With a preferred arc-shaped unfolding can be ensured even better be that the safety net is put over the victim. Alternatively, in a further preferred embodiment but also be provided that the Safety net in the folded state in a rear front area, is preferably arranged in a water tank area and starting from there with a safety net area in a high arc towards a front Front section is unfoldable. At first, the safety net is advantageous relative steeply up and then led forward in a high arc. Both superstructures has in common that the safety net outlet opening here only through a gap between a body area adjacent to the windshield and one Edge area of this windshield can emerge. This makes an overall very compact construction possible, as it is particularly suitable for cramped installation situations is. In addition, such a structure can be used particularly well in existing vehicle bodies to get integrated. So z. B. arranged in a front water box area Safety net only a very small gap between the front window and the bonnet required while arranging the safety net in the front roof area only a very small gap between the front window and the roof is required. Overall, solutions of this type can therefore be very practical getting produced.

In a preferred embodiment, the safety net covers at least the entire one Front end length and the entire front end width, making an overall very high catch probability is achieved.

Basically, a single safety net can be used, which in the folded state seen in the vehicle transverse direction in a medium Vehicle area, preferably in a middle roof area or in a middle Water box area is arranged. The safety net can be folded up  Condition also extend across the entire width of the vehicle. Alternatively, you can however, at least two safety nets can also be provided, which are in the activated state each cover a partial area of the front end area. These several safety nets can depending on the impact situation, in particular depending on the Impact point of the victim, simultaneously or separately or in groups to be activated.

In a particularly preferred first specific embodiment there are two Safety nets are provided, which when folded up in Vehicle side direction are arranged opposite vehicle sides, preferably at a junction between the A-pillars and the Roof structure or at a connection point between the A-pillars and the rear Front hood area. The safety nets can be placed side by side with a middle overlap area are unfolded, which then each half of the Cover the front end area. Alternatively, the safety nets can be placed in one second concrete configuration but can also be developed diagonally with a middle overlap and crossover area. With such arrangements and Superstructures are a simple adaptation to different vehicle types and vehicle bodies or installation situations possible.

It is advantageous on the vehicle body, preferably on a lower front Front end area, at least one, preferably several, catch hooks or Barb arranged with which the safety net unfolded in the activated Condition is hooked. In a preferred embodiment, the catch hooks or Barbs are designed to be crash-active and only when there is an actual or threatening one Collision can be activated, preferably folded out. That or the networks can turn on catch and hook such barbs or catch hooks, thereby creating a there is additional possibility of fixing the victim on the front of the car. When attaching the catch hooks or barbs in a lower front The front net floor area must be dimensioned accordingly large. The Catching nets are particularly effective when one is still in motion Vehicle in a simple and fast manner with a front end at the front lower front end area and can be hooked there. Basically, they can Catch hooks or barbs are also arranged on another vehicle area be, e.g. B. in the side of the vehicle or in the bumper, but here  then it must be ensured that these catch hooks or barbs pose no danger to a pedestrian, cyclist or the like is an accident victim.

Since relatively high forces act in such an accident, it can occur in conventional ones Nets may constrict and under certain circumstances due to the thin net threads Incisions come. Therefore, according to another, preferred Embodiment, which is also claimed separately, proposed that the safety net is formed from interconnected flat material strips. These flat Strips of material prevent such constriction or cutting.

Furthermore, a front free end of the Safety net be formed heavier than a subsequent to the rear Safety net area, preferably heavier in this front area Material is used. Alternatively, however, weighting agents, e.g. B. Plastic balls and / or lead and / or aluminum weights can be used. The preferably using a mainly light material also causes simple and easy spreading of the safety net over the front section.

In a further preferred embodiment of the invention, which is also separate is claimed, a positioning airbag is assigned to each in the safety net at least with a partial area in the area above the front hood approximately Roof height preferably extends over the entire length of the front end and in one the first deployment phase, the net is positioned over the front section. The safety net can then be deployed in a second phase Slacken the at least one positioning airbag down on the Front end area and thus lowered to the victim. With a Such positioning airbag becomes a particularly functionally reliable and simple Positioning of the net above the front end area reached. So that will overall, a very high level of functional reliability is achieved.

In a preferred embodiment, this is seen in the vehicle transverse direction opposite sides of the vehicle, preferably in the connection areas between a roof structure and the A-pillars, one in the inflated state finger-like positioning airbag arranged, the positioning airbags the network large area above the front section, preferably with two side and one Position the front net area as an overhanging rag. This side  In a further preferred embodiment, network areas can in each case by additional side positioning airbags can be positioned laterally. So that's one individual and particularly advantageous safety device can be trained, with one overall relatively high probability of collection is achieved.

Another advantageous safety device, which is also claimed separately, sees before that preferably on both sides of the vehicle with at least one Traction network connected traction means is provided, which in the basic state at activated safety device starting from the folded safety net a hood joint between the trunk and fender and possibly along an A-pillar - if the at least one safety net in the front roof area and not in the Water box area is arranged - relocated to one in the area of Vehicle front ends, preferably in the area below a bumper device, arranged feed device is guided as a pretensioner. Such The pretensioner device as a feed device is preferably a pyrotechnic device activatable linear or rotary tensioner. The traction device is at one Activation of the safety device by hurling the at least a safety net from the area of the hood joint and possibly from the area of the A- Column can be pulled out, at the same time the at least one safety net over the The front end area is positioned. Then can be used for lowering and wrapping of the accident victim through the at least one safety net, the traction from Feeder are retracted, whereby the at least one safety net is pullable below. The traction means is preferred by at least one rope and / or formed at least one band. With such a structure, one becomes special advantageous and safe lowering of the safety net on the victim as well as a particularly advantageous and reliable wrapping of the victim with the achieved at least one safety net without the risk of the accident victim can slide down under the safety net from the front hood.

Another advantageous safety device on a motor vehicle to protect Pedestrians or the like, which has a safety net that is activated in the Folded basic state is arranged on the vehicle body and that in one activated use position a collision victim in the area with the vehicle stops above a front hood, has a safety net in which a tensioning belt is integrated is that with a pretensioner, preferably a pyrotechnically activated Retractor or linear tensioner is coupled. The safety net is in the  Basic position arranged on the bonnet area and at the transition from Basic position in the use position from below in the area above the The hood of the accident victim is enveloped in such a way that the safety net to and at Wrapping and wrapping the victim by means of the tightening tape is closed.

Even with such a structure, the risk of a secondary impact can be advantageous can be significantly reduced in a simple manner. Activation of the pretensioner is advantageously carried out via a sensor device, for. B. a contact or pre-crash Sensor device for detecting an actual or impending impact.

The safety net in the folded state is preferred here Water box area arranged. The tensioning device is also advantageous arranged adjacent to this in the water tank area. When activating a Such safety device is to ensure that the pretensioner is not activated too early to ensure that the victim is safely enveloped.

In principle, each safety net and possibly positioning airbag can have a propellant be assigned. This propellant charge is preferably ignitable as pyrotechnic Propellant formed.

A sensor device is preferred for activating the safety device, preferably a contact or pre-crash sensor device for detecting a actual or impending collision. This will make it a high one Functional safety in connection with timely activation of the Safety device reached.

The invention is explained in more detail below with reference to drawings. Show it

Fig. 1 is a schematic side view of a vehicle front portion of a motor vehicle with a first embodiment of a safety device according to the invention,

Fig. 2 is a schematic view of a portion of a fishing net,

Fig. 3 is a schematic side view of a vehicle front portion of a motor vehicle with an alternative embodiment of a safety device according to the invention,

Fig. 4 is a schematic plan view of a developed safety net,

Fig. 5 is another schematic plan view of two juxtaposed and unfolded nets,

Fig. 6 shows a further schematic plan view of two mutually crossing in a spread state nets,

Fig. 7 is a schematic side view of a vehicle front portion of a motor vehicle with a positionable by a Positionierairbag safety net,

Fig. 8 is a schematic plan view of a front body of a motor vehicle with two Positionierairbags the area above the front body portion and two lateral Positionierairbags,

Fig. 9 is a schematic side view of a vehicle front portion of a motor vehicle having a safety device comprising a hüllbares from below around an accident victim safety net, in which a tensioning strap is integrated, which is coupled to a Strammereinrichtung, and

Fig. 10 is a schematic side view of a vehicle front portion of a motor vehicle having a safety device, which shows one end connected to a fishing net rope along with retraction device.

In Fig. 1 is a side view of a vehicle front portion of a motor vehicle 2 is shown diagrammatically, to which a safety device 3 for the protection of pedestrians or the like is arranged.

This safety device 3 comprises a safety net 4 which, in the non-activated basic state 5, is arranged folded in a front roof area 7 of a vehicle roof 8 . Only a safety net 4 is provided here, which in the folded basic state 5 can extend over the entire roof width, as can be seen in particular from FIG. 4. Advantageously, a safety net outlet opening, not shown in detail here, is formed by a gap between the front roof area 7 and a front pane 6 , not shown in detail here.

The motor vehicle 2 further comprises a sensor device, not shown here, preferably a contact or pre-crash sensor device, with which an actual or impending collision of a pedestrian 9 with the motor vehicle 2 can be sensed. If such an actual or impending collision is detected by means of a sensor device, a preferably pyrotechnic propellant charge 10 , which is assigned to the folded safety net 4 in the basic state 5 in the front roof area 7 , is ignited, as a result of which the safety net 4 in a first deployment phase roughly corresponds to the series 11 unfolded in an arc shape in FIG. 1 and covered the entire front end area 1 over a large area and, viewed in the vertical direction of the vehicle, runs approximately at least at roof level.

Then, in a second deployment phase following this first deployment phase, the safety net 4 can then be lowered in the direction of a front hood 12 while enveloping the pedestrian 9 as an accident victim, as is shown schematically in FIG. 1. The pedestrian 9 then gets caught in the network and is thereby held on the front end area 1 , whereby the risk of a secondary impact on the road can be considerably reduced. As is indicated only schematically by the arrows 11 in FIG. 1, the safety net 4 is spread out and unfolded in a sheet as large as possible over the front section 1 for a high probability of catching.

In order to avoid impairment of the pedestrian 9 by constrictions and incisions by the safety net 4, the safety net 4 is preferably shown made of flat strips of material 13 , as is shown in FIG. 2 by way of example and schematically for a partial area of the safety net 4 .

FIG. 3 shows an alternative embodiment of a safety device 14 , which differs from that of the safety device 3 of FIG. 1 in that the safety net 4 here in the folded basic state 5 in a central water tank region 15 , preferably also with a gap Safety net outlet opening between the front screen 6 and the front hood 12 is arranged. In such a construction, the safety net 4 is unfolded starting from the water box area 15 with a free safety net area in a high arc with an initially steep rising flank in the direction of a front front car area 1 , which is not shown here, however. Further, according to in contrast to the embodiment of Fig. 1, which is shown here only schematically and by way of example here on a lower front vehicle front bottom portion 16, a plurality of catch hooks 17 are preferably arranged, with which the safety net 4 in the in the Fig. Activated shown in Figure 3, the deployed state can be hooked in order to additionally secure the safety net 4 , so that sliding down the pedestrian 9 from the bonnet 12 is made even more difficult. These catch hooks 17 , which can also be designed, for example, as barbs, are preferably designed to be crash-active, ie that they can only be activated in the event of an actual or impending collision, e.g. B. can be folded out of the front end area 16 . As can also be seen from FIG. 3, the safety net 4 is of a correspondingly large size here in order to ensure that the safety net 4 can hook onto the safety hook 17 with at least one end region. Since the vehicle is still in motion even after a collision, the safety net 4 is pressed against the front lower front end area 16 , so that the hooking can be easily reached here.

In FIG. 4 a top view is shown on the front body portion 1 of the motor vehicle 2 with a single safety net 4, wherein here the propellant charge 10 and the fishing net 4 in the folded initial state 5 extend over the entire width of the roof, as has already been discussed in detail previously , As can also be seen from FIG. 4, the safety net 4 covers the entire length and width of the front end of the vehicle in the spread and unfolded state in accordance with the first unfolding phase. A front free end 18 of the safety net 4 is shown here with thicker lines, which should mean that this free end 18 of the safety net 4 is heavier than a subsequent rear safety net area 19 . This can be done, for example, by using heavier material or by adding weighting agents. For example, individual weighting weights can be attached to the front edge area at a distance from one another, but this is not shown here.

In FIGS. 5 and 6 show further alternative embodiments are shown, in each of which nets 20, 21 with associated propellant charges 22, 23 in the vehicle transverse direction opposite sides of the vehicle in the connecting regions between a vehicle roof 24 and the A-pillars 25, 26 are disposed on.

In FIG. 5, the safety nets 20 , 21 are arranged side by side with a central overlap area 27 in the unfolded state. In the embodiment according to FIG. 6, however, the safety nets 20 , 21 are unfolded diagonally with a central overlap and crossover area 28 . In the illustration in FIG. 5 and in the illustration in FIG. 6, the first unfolding phase immediately before the second unfolding phase is shown schematically and by way of example.

In Fig. 7 a further alternative embodiment of a security device 29 is shown of the motor vehicle 2 to the front carriage region 1. A safety net 30 is assigned at least one positioning airbag 31 here, which extends in the area above the front hood 12 approximately at roof level over the entire length of the front end and, in a first deployment phase, as shown in FIG. 7, the safety net 30 above the front end 1 positioned. As indicated by the arrows 32 , the safety net 30 can then be lowered in a second deployment phase by slackening at least one positioning airbag down to the front end area 1 and thus to the accident victim, if any, located thereon.

As can be seen from FIG. 8, which shows a schematic plan view of a motor vehicle 2 with the safety device 29 , viewed in the vehicle transverse direction, it is preferably on opposite vehicle sides, preferably in the connection areas between a roof structure and the A-pillars, in each case inflated Position of the finger-shaped positioning airbag 31 , which positions the safety net 30 over a large area above the front end area 1 with two side net areas 33 , 35 and possibly a front net area 34 as overhanging tabs, as can be seen in particular in FIG. 7. These lateral net areas 33 , 35 can then again be laterally positioned by means of lateral positioning airbags 36 , 37 , as is shown only schematically and by way of example in FIG. 8.

Finally, FIG. 9 shows a safety device 38 on the front end area 1 of the motor vehicle 2 , in which a safety net 39 in the folded basic state 5 with the associated propellant charge 40 is arranged folded in the water tank area. In the safety net 39 , a taut strap 41 is integrated, which with a pretensioner 42 , z. B. a pyrotechnically activated retractor or linear tensioner is coupled.

The safety net 39 is enveloped in the transition from the basic position 5 to a use position 43 shown in FIG. 9 from below around an accident victim 44 located in the area above the front hood, the safety net 39 being used for wrapping and wrapping the accident victim 44 by means of the tightening band 41 can be pulled, as is shown only schematically and by way of example in FIG. 9.

Finally, FIG. 10 shows a safety device 45 with a safety net 46 arranged in the front roof area 7 . A rope 47 connected to the safety net 46 is provided as a traction means on both sides of the vehicle 2 , which in the installation position shown in broken lines in FIG. 10 as the basic state with the safety device 45 not activated, starting from the folded safety net 46 in the A-pillar 49 and in a hood joint 48 is laid and is guided to an integrated retraction device 52 arranged in the area of the vehicle front end 50 and in the area below the bumper device 51 . When the safety device 45 is activated, the rope 47 is also torn out of the area of the hood joint 48 and the area of the A-pillar by the throwing out of the safety net 46, and the safety net is positioned above the area of the front end, as shown in FIG. 1. The rope 47 is then drawn in by the pull-in device 52 to lower and encase the victim in accordance with arrow 53 , as a result of which the safety net 46 is pulled downward.

LIST OF REFERENCE NUMBERS

1

Front end area

2

motor vehicle

3

safety device

4

catchall

5

ground state

6

windscreen

7

front roof area

8th

vehicle roof

9

pedestrian

10

propellant

11

arrows

12

bonnet

13

flat material strips

14

safety device

15

Plenum area

16

Front car floor area

17

hook

18

free end

19

rear safety net area

20

catchall

21

catchall

22

propellant

23

propellant

24

vehicle roof

25

A column

26

A column

27

middle overlap area

28

middle overlap and crossover area

29

safety device

30

catchall

31

positioning airbag

32

arrows

33

side mesh area

34

front net area

35

side mesh area

36

side positioning airbag

37

side positioning airbag

38

safety device

39

catchall

40

propellant

41

tight rope

42

Strammereinrichtung

43

use position

44

casualty

45

safety device

46

catchall

47

rope

48

Haubenfuge

49

A column

50

vehicle front end

51

bumper device

52

retraction device

53

arrow

Claims (22)

1.Safety device on a motor vehicle for protecting pedestrians or the like with a safety net which is arranged folded on the vehicle body in the non-activated basic state and which, in an activated, unfolded position of use, is an accident victim colliding with the vehicle to reduce the risk of a secondary impact in the area above Front hood of a front section of the motor vehicle holds, characterized in that the safety net ( 4 ; 20 , 21 ; 30 ; 46 ) covers at least a partial area, preferably the entire front section ( 1 ), over a large area after the first deployment phase and at least approximately in the overlap area in the vertical direction of the vehicle runs at roof level, and that the safety net ( 4 ; 20 , 21 ; 30 ; 46 ) can be lowered in a second deployment phase following the first deployment phase in the direction of the front hood ( 12 ) while enveloping the victim ( 9 ) is. 2. Safety device according to claim 1, characterized in that the safety net ( 4 ; 20 , 21 ; 30 ; 46 ) is arranged in the folded state in a front roof area ( 7 ) and starting from there in the first deployment phase at least in a straight line, preferably in an arc Direction on a front front end area is deployable. 3. Safety device according to claim 1, characterized in that the safety net ( 4 ) is arranged in the folded state in a rear front area, preferably in a water box area ( 15 ), and starting from there with a safety net area in a high arc towards a front Front section ( 1 ) can be unfolded. 4. Safety device according to claim 2 or 3, characterized in that the safety net outlet opening is formed by a gap between a body area adjacent to a front window ( 6 ) and an edge region of this front window ( 6 ). 5. Safety device according to one of claims 1 to 4, characterized in that the safety net ( 4 ; 20 , 21 ; 30 ; 46 ) covers at least the entire front end length and front end width. 6. Safety device according to one of claims 1 to 5, characterized in that at least two simultaneously or separately activatable safety nets ( 20 , 21 ) are provided, each of which covers a partial area of the front end area ( 1 ) in the activated state. 7. Safety device according to claim 6, characterized in that two safety nets ( 20 , 21 ) are provided which are arranged in the folded state on opposite vehicle sides seen in the vehicle transverse direction, preferably at a connection point between the A-pillars ( 25 , 26 ) and the Roof structure ( 24 ) or the rear bonnet area. 8. Safety device according to claim 7, characterized in that the safety nets ( 20 , 21 ) lying next to each other with a central overlap area ( 27 ) can be unfolded and each cover one half of the front end area ( 1 ). 9. Safety device according to claim 7, characterized in that the safety nets ( 20 , 21 ) can be unfolded diagonally with a central overlap and crossover area ( 28 ). 10. Safety device according to one of claims 1 to 5, characterized in that a single safety net ( 4 ) is used, which in the folded state is arranged in a central vehicle area seen in the transverse direction of the vehicle, preferably a central roof area or a central water box area, or over extends the entire width of the vehicle. 11. Safety device, in particular according to one of claims 1 to 10, characterized in that at least one, preferably a plurality, catch hooks ( 17 ) or barbs is arranged on the vehicle body, preferably on a front lower front end area ( 16 ), with which or those Safety net ( 4 ) can be hooked in the activated, unfolded state. 12. Safety device according to claim 11, characterized in that the catch hooks ( 17 ) or barbs are designed to be crash-active and can only be activated, preferably folded out, in the event of an actual or impending collision. 13. Safety device, in particular according to one of claims 1 to 12, characterized in that the safety net ( 4 ) is formed by interconnected flat material strips ( 13 ). 14. Safety device, in particular according to one of claims 1 to 14, characterized in that a front free end ( 18 ) of the safety net ( 4 ) is heavier than a trailing safety net area ( 19 ) for a defined safety net spread, preferably by using a heavy material or by providing weighting means. 15. Safety device, in particular according to one of claims 1 to 14, characterized in that the safety net ( 30 ) is assigned at least one positioning airbag ( 31 ), which is preferably at least with a partial area in the area above the front hood ( 12 ) approximately at roof level extends over the entire length of the front end and, in a first deployment phase, the safety net ( 30 ) is positioned over the front end area ( 1 ), and in a second deployment stage, the safety net ( 30 ) is deployed downwards by slackening the at least one positioning airbag ( 31 ) onto the front end area ( 1 ) and can thus be lowered to the victim. 16. Safety device according to claim 15, characterized in that on opposite vehicle sides seen in the vehicle transverse direction, preferably in the connection areas between a roof structure and the A-pillars, a finger-like positioning airbag ( 31 ) is arranged in the inflated state, which the safety net ( 30 ) Position over a large area above the front section ( 1 ) with two side and possibly a front net area ( 33 , 34 , 35 ) as overhanging tabs. 17. Safety device according to claim 16, characterized in that the lateral net areas ( 33 , 35 ) can be positioned laterally by additional lateral positioning airbags ( 36 , 37 ). 18. Safety device, in particular according to one of claims 1 to 17, characterized in that a traction means ( 47 ) connected to the at least one safety net ( 46 ) is preferably provided on both sides of the vehicle ( 2 ), which in the basic state when the safety device is not activated ( 45 ) laid from the folded safety net ( 46 ) along a hood joint ( 48 ) and possibly along an A-pillar ( 49 ) and to a retraction device ( 52 ) arranged in the area of the vehicle front end ( 50 ) as a pretensioner, preferably a pyrotechnically activatable one Linear or rotary tensioner is guided in such a way that the traction means ( 47 ) when the safety device ( 45 ) is activated by the at least one safety net ( 46 ) being thrown out of the area of the hood joint ( 48 ) and possibly from the area of the A- Column ( 49 ) can be torn out and the at least one safety net ( 46 ) positioned over the front end area Ar, and that subsequently the tension means (47) for lowering and wrapping of the victim by means of the at least one safety net (46) of the feeder device (52) immediately, whereby the at least one safety net (46) can be pulled down. 19. Safety device according to claim 18, characterized in that the traction means is formed by at least one rope ( 47 ) and / or at least one band. 20.Safety device on a motor vehicle for protecting pedestrians or the like with a safety net which is arranged folded on the vehicle body in the non-activated basic state and which, in an activated, unfolded position of use, is an accident victim colliding with the vehicle to reduce the risk of a secondary impact in the area above Front hood of a front section of the motor vehicle holds, characterized in that a tensioning belt ( 41 ) is integrated in the safety net ( 39 ), which is coupled to a tensioning device ( 42 ), preferably a pyrotechnically activatable retractor or linear tensioner, and in that the safety net ( 39 ) is arranged in the basic position ( 5 ) on the front hood area and when changing from the basic position ( 5 ) to the use position ( 43 ) from below around the accident victim ( 44 ) located in the area above the front hood ( 12 ) is such that the Safety net ( 39 ) for and when wrapping and wrapping the accident victim ( 44 ) by means of the tightening tape ( 41 ) can be drawn. 21. Safety device according to one of claims 1 to 20, characterized in that each safety net ( 4 ; 20 , 21 ; 30 ; 39 ) and possibly positioning airbag ( 31 , 36 , 37 ) a propellant, preferably a pyrotechnically ignitable propellant ( 10 ; 22 , 23 ; 40 ). 22. Safety device according to one of claims 1 to 21, characterized in that a sensor device, preferably a contact or pre-crash sensor device, is provided for detecting an actual or impending collision with which the safety device ( 3 ; 14 ; 29 ; 38 ) can be activated.