JP2005262953A - Air bag device for pedestrian - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air bag device for a pedestrian, capable of minimizing influence by heat from an engine. <P>SOLUTION: This air bag device M1 for the pedestrian comprises an air bag 36 arranged in a position being the vicinity of the rear end of a hood panel 3 of a vehicle, folded up and stored in a case 17 and unfolded and inflated by making inflating gas flow in, and an inflator 29 stored in the case 17 together with the air bag 36 and constituted for supplying the inflating gas to the air bag 36. Among constituent parts of the air bag device M1 for the pedestrian, at least the air bag 36 is mounted on the vehicle by arranging a temperature rise restraining member 45 on the periphery. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a pedestrian airbag apparatus having an airbag and an inflator disposed in a position near the rear end of a hood panel of a vehicle and housed in a case.

Normally, an engine room provided with a high-temperature engine or the like is disposed below the vehicle hood panel, and the vicinity of the pedestrian airbag device disposed near the rear end of the vehicle hood panel is also high. It may become. Therefore, in a conventional pedestrian airbag device, a cooling gas is caused to flow through a flow path disposed below the hood panel, and the cooling gas is used to heat the engine from an engine or the like. It is the structure which has prevented that it is transmitted (for example, refer patent document 1).
JP-A-8-258669

  However, in the conventional pedestrian airbag device, there is no disclosure that measures against heat from the engine or the like are provided in the device itself.

  This invention solves the above-mentioned subject, and it aims at providing the airbag apparatus for pedestrians which can suppress the influence by the heat from an engine etc. as much as possible.

The airbag device for a pedestrian according to the present invention is disposed near the rear end of the hood panel of the vehicle,
An airbag that is folded and stored in a case, and inflated by inflating gas,
An inflator that is housed in a case together with an airbag and configured to supply inflation gas to the airbag;
A pedestrian airbag device having a configuration comprising:
At least an airbag among components of the airbag device for a pedestrian is mounted on a vehicle with a temperature rise suppression member disposed around the airbag.

  In the pedestrian airbag apparatus according to the present invention, at least the airbag is attached and fixed to the vehicle body side in a state where the temperature rise suppression member is disposed around the airbag. That is, heat from the engine or the like can be prevented from being transmitted to the airbag by the temperature rise suppressing member disposed around the periphery. Therefore, it is possible to suppress the deterioration of the airbag.

  Therefore, in the pedestrian airbag device of the present invention, the influence of heat from the engine or the like can be suppressed as much as possible.

  Further, in the pedestrian airbag device of the present invention, it is only necessary to provide a temperature rise suppression member around the airbag, and as in the conventional pedestrian airbag device, a temperature rise is generated on the vehicle body side. Since it is not necessary to provide a mechanism for suppressing the vehicle, it is not necessary to significantly change the design of the vehicle.

  Further, in the pedestrian airbag device having the above-described configuration, the temperature rise suppression member is configured by a cylindrical body that is formed of a foamed body such as foamed synthetic resin or foamed rubber and covers the airbag so that the folded state can be maintained. It is preferable to do.

  In the pedestrian airbag apparatus configured as described above, the folded airbag is stored in the case together with the cylindrical body in a state where the folded airbag is stored in the cylindrical body and the folded state is maintained. Therefore, a wrapping material or the like for maintaining the folded shape of the airbag need not be separately provided.

In addition, as a pedestrian airbag device, disposed in the position near the rear end of the hood panel of the vehicle,
An airbag that is folded and stored in a case, and inflated by inflating gas,
An inflator that is housed in a case together with an airbag and configured to supply inflation gas to the airbag;
A pedestrian airbag device having a configuration comprising:
At least the inflator among the components of the pedestrian airbag apparatus may be mounted on the vehicle with a temperature rise suppression member disposed around the inflator.

  In the pedestrian airbag apparatus configured as described above, the inflator is attached and fixed to the body side of the vehicle in a state where the temperature rise suppressing member is disposed around the inflator. That is, it is possible to suppress the heat from the engine or the like from being transmitted to the inflator by the temperature rise suppressing member disposed around the periphery. Therefore, it can suppress that the performance of an inflator changes under the influence of the heat from an engine etc.

  Further, in the pedestrian airbag device having the above-described configuration, the temperature rise suppression member is configured by a cooling element that is disposed in a case in which the airbag and the inflator are accommodated and is configured to be able to cool the inside of the case. It is preferable.

  If the pedestrian airbag device has the above-described configuration, the temperature rise inside the case can be suppressed simply by disposing the cooling element in the case. Therefore, a pedestrian airbag that does not include a temperature rise suppression member is provided. The apparatus can be easily applied without greatly changing the design.

  Further, in the pedestrian airbag apparatus configured as described above, the temperature rise suppression member has a waterproof property and is arranged to cover at least the entire periphery of the folded airbag and inflator. It is preferable.

  In the pedestrian airbag device having the above-described configuration, at least the entirety of the folded airbag and the inflator is covered with the temperature rise suppression member and stored in the case in a waterproof state, and the vehicle Therefore, even if rainwater or the like enters the case, it can be stored in the case without impairing the durability of the airbag and the inflator.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this specification, the front-rear direction is based on the direction along the front-rear direction of the vehicle, and the left-right direction is based on the direction along the left-right direction when the rear side is viewed from the front side of the vehicle. .

  1-4, the pedestrian airbag device M1 of the embodiment stores an airbag 36, an inflator 29 that supplies inflation gas to the airbag 36, a folded airbag 36, and the inflator 29. A casing 17 that covers the periphery of the folded airbag 36 and the inflator 29, and an airbag cover 23 that covers the upper side of the case 17. It is disposed at a position near the rear end 3a of the V hood panel 3.

  1-4, the pedestrian airbag device M1 is disposed over the substantially entire length in the left-right direction at a position on the lower side near the rear end 3a of the hood panel 3, as shown in FIGS. In this case, in the opening 4a formed by cutting out the outer panel 4 constituting the hood panel 3, the hood panel 3 is disposed so as to be accommodated in a recess 5a formed by recessing the inner panel 5 downward.

  Further, the vehicle V is provided with a sensor 9 capable of detecting or predicting a collision with a pedestrian on the front bumper 8, and an air bag operation circuit (not shown) detects a signal indicating the collision with the pedestrian as a sensor 9. When the input is input from, the inflator 29 is operated to expand and inflate the airbag 36. Further, an engine room ER provided with an engine or the like is disposed below the hood panel 3 in the vehicle V and in front of the pedestrian airbag apparatus M1 (see FIGS. 1 and 2).

  The case 17 is made of sheet metal, and is arranged so as to close the lower end side of the peripheral wall portion 18 and the peripheral wall portion 18 having a substantially rectangular tube shape that is opened along the substantially vertical direction while opening the upper end side. And a bottom wall portion 20 having a substantially box shape. Further, the case 17 is formed to curve along the rear edge of the hood panel 3 corresponding to the cowl 11 so that the vicinity of the center in the left-right direction protrudes forward when viewed from above. A plurality of locking claws 19 for assembling the airbag cover 23 to the case 17 project from the outer surface side of the wall portions 18 a and 18 b facing the front and rear of the case peripheral wall portion 18. Each of the locking claws 19 is provided in plural on the front and rear wall portions 18a and 18b, and is configured by bending the tip 19a side downward, and this tip 19a side is connected to the airbag. The cover 23 is configured to be able to be locked to a peripheral edge of a locking hole portion 24a formed in a peripheral wall portion 24 described later. In the case of the embodiment, each locking claw portion 19 is formed with a predetermined shape in the front and rear wall portions 18a and 18b, and is cut and raised from the front and rear wall portions 18a and 18b. It is configured integrally with the walls 18a and 18b (see FIGS. 3 and 4).

  The bottom wall portion 20 is disposed on the lower side of the folded airbag 36, and a mounting bolt 21 for mounting a mounting piece 43 (described later) of the airbag 36 to the case 17 and an inflator 29 are mounted to the case 17. A plurality of insertion holes 20a for allowing the bolts 31 to be inserted therethrough are provided (see FIGS. 3 and 4). In the case of the embodiment, the case 17 is fixedly attached to the inner panel 5 of the hood panel 3 using the bolt 21 and the nut 22 for attaching the attachment piece 43 of the airbag 36 to the case 17. Further, the case 17 is formed with insertion holes through which lead wires (not shown) of the inflator 29 are inserted at predetermined positions.

  The airbag cover 23 is made of a synthetic resin such as an olefin-based thermoplastic elastomer, and is disposed on the upper side of the case 17 so as to cover the case opening 17a. In the case of the embodiment, the airbag cover 23 is disposed so as to close the opening 4a formed in the outer panel 4 in the hood panel 3, and the upper surface side is arranged so as to be substantially flush with the surface of the surrounding outer panel 4. It is installed. The airbag cover 23 includes a substantially cylindrical peripheral wall portion 24 projecting downward so as to be disposed on the outer peripheral side of the case peripheral wall portion 18, and a door portion 25 that covers the case opening 17a. ing. The peripheral wall portion 24 is formed with a plurality of locking hole portions 24 a for locking the locking claw portion 19, and the airbag cover 23 has the locking claw portion 19 disposed in the case 17. The case 17 is assembled to the case 17 by being engaged with the periphery of the engagement hole 24a.

  In the case of the embodiment, as shown in FIG. 2, the door portion 25 is curved and formed so as to project the vicinity of the center in the left-right direction to the front side when viewed from above, according to the case opening 17 a. In addition, on the left edge, right edge, and rear edge side, a breakable portion 26 that can be broken when the airbag 36 protrudes is disposed, and on the front edge side, a hinge portion 27 that serves as a rotation center at the time of opening is disposed. It is configured (see FIGS. 3 and 4).

  In the embodiment, as shown in FIG. 2, the inflator 29 is disposed at two positions on the left and right ends of the case 17, and each of the inflators 29 is provided with a gas discharge port (not shown) at one end in the left-right direction. It is columnar. The inflator 29 is attached and fixed to the case 17 by holding the periphery thereof by a metal plate bracket 30 and fixing the bracket 30 to the case 17 using a bolt 31. Further, as shown by a two-dot chain line in FIG. 5, a substantially cylindrical inflow port portion 40 of the airbag 36 described later is connected to the end portion of the inflator 29 on the gas discharge port side using a clamp 33. ing. The inflator 29 is connected with a lead wire (not shown).

  As shown in FIGS. 1, 2, and 5, the airbag 36 includes an inflating portion 37 that inflates by inflating an inflating gas, and a peripheral portion 42 that is disposed around the inflating portion 37 and does not allow the inflating gas to flow in. It is prepared for. The inflating part 37 is configured to be inflatable so that an inflating gas flows into the inside to separate the front side wall part 37a and the back side wall part 37b. In the case of the embodiment, the air bag 36 is a flat air bag type in which the front side wall portion 37a and the back side wall portion 37b have the same planar shape and can be flatly deployed by overlapping the wall portions 37a and 37b. Manufactured by bag weaving using yarn and polyamide yarn.

  As shown in the two-dot chain line of FIG. 2 and FIG. 7, the inflating portion 37 is formed in a substantially U-shape that is wide in the left-right direction when viewed from the front, and is in the left-right direction. And a vertical expansion portion 39 extending from the left and right ends of the horizontal expansion portion 38 to the rear side so as to cover the front side of the front pillar 15. . The lateral inflating portion 38 is configured to cover the entire length in the left-right direction from the upper surface in the vicinity of the rear end 3a of the hood panel 3 to the vicinity of the lower front surface of the front windshield 14 when the inflation of the airbag 36 is completed. Yes. A cowl 11 including a cowl panel 13 and a cowl louver 12 disposed above the cowl panel 13 is disposed between the hood panel 3 and the front windshield 14. That is, the lateral inflating portion 38 of the airbag 36 is configured to be able to cover substantially the entire upper surface side of the rear end 3a of the hood panel 3 and the cowl 11 when the inflation is completed.

  In addition, in the vicinity of the left and right ends on the front edge 38a side of the lateral expansion portion 38 (the lower edge side when the vehicle is mounted), the inflow port portion that extends forward and is bent so as to be separated from each other. 40 and 40 are formed. These inflow ports 40 allow the inflating gas from the inflator 29 to flow into the inflating portion 37 of the airbag 36, and are externally attached to the inflator 29 and connected to the inflator 29 using the clamp 33. ing.

  In addition, three attachment pieces 43 extending in a plate shape for fixing the airbag 36 to the case 17 are formed at three locations on the peripheral edge portion 42 on the front edge 38 a side of the lateral inflating portion 38. Each attachment piece 43 is provided with an attachment hole 43a through which the bolt 21 is inserted. As shown in FIG. 3, the attachment piece 43 is attached to the case bottom wall portion 20 using the bolt 21.

  In the case of the embodiment, as shown in FIGS. 3 and 4, the folded airbag 36 and the inflator 29 are covered with a cylindrical body 45 as a temperature rise suppressing member and stored in the case 17. ing. The cylindrical body 45 is a foamed body made of foamed synthetic resin such as independent foamed polypropylene or independent foamed polyethylene having a heat insulating action, foamed rubber, etc., and is configured to have flexibility. The left and right ends are opened so that the folded airbag 36 and the inflator 29 can be accommodated, and the shape is substantially cylindrical with the axial direction extending in the left-right direction. Further, the cylindrical body 45 is configured to be able to maintain the folded state of the airbag 36 when the airbag 36 is stored, and to be able to break a predetermined portion when the airbag 36 is deployed and inflated. As shown in FIG. 6, an insertion hole 45 b through which a bolt 31 disposed on the bracket 30 of the inflator 29 can be inserted, and an airbag 36, in the cylindrical body 45 on the case bottom wall 20 side. A slit 45c through which the attachment piece 43 can be inserted is disposed. And each insertion hole 45b and the slit 45c are the structures sealed so that the clearance gap produced between the volt | bolt 31 and the attachment piece 43 may be plugged up with a silicon resin etc. in the state which made the volt | bolt 31 and the attachment piece 43 protrude. is there.

  In addition, the cylindrical body 45 has a belt-like band 46 (see FIG. 5) in which the openings 45a and 45a on both left and right ends are disposed around the lead wires (not shown) of each inflator 29 when the vehicle is mounted. 6 (see the two-dot chain line in FIG. 6), and the diameter is closed.

  Next, mounting of the pedestrian airbag device M1 of the embodiment on the vehicle V will be described. First, the airbag 36 is folded. Specifically, from the state in which the front and back side wall portions 37a and 37b are overlapped with each other, as shown by the two-dot chain line in FIG. 5, the fold of the mountain fold or the valley fold parallel to the front edge 38a of the lateral expansion portion 38 C is attached, and the bellows is folded except for the portions of the inlet 40 and the attachment piece 43 so as to approach the front edge 38a. Then, the parts on the left and right ends are folded back to the side folded by bellows folding so as to be housed in the case 17, and the folding of the airbag 36 is completed. Next, each inflator 29 held by the bracket 30 is inserted into the inflow port portion 40 and connected to the inflow port portion 40 using the clamp 33, and the inflator 29 is assembled to the airbag 36, and the airbag is assembled. Form the body.

  After that, the airbag assembly is inserted into the tubular body 45 from the opening 45a so as to spread the tubular body 45, and the bolts 31 disposed on the brackets 30 protrude from the insertion holes 45b. Then, the mounting pieces 43 are protruded from the slits 45c, and the airbag assembly is housed in the cylindrical body 42. Next, the openings 45a and 45a at both the left and right ends of the cylindrical body 45 are closed using the band 46 with the lead wires (not shown) of the inflator 29 protruding, and at the same time, the gaps between the insertion holes 45b and the slits 45c. Is closed with silicon resin or the like. In the tubular body 45 of the embodiment, the insertion hole 45b and the slit 45c are formed in advance, but the predetermined portion is broken when the airbag assembly is stored without the insertion hole 45b and the slit 45c being disposed. Then, the bolt 31 and the mounting piece 43 may be protruded and the gap generated by breaking may be sealed using silicon resin or the like.

  Next, the bolt 21 is inserted into the mounting hole 43 a of the mounting piece 43. Then, the bolts 21 and 31 are projected from the insertion hole 20a so that the airbag assembly is stored in the case 17 together with the cylindrical body 42, and the bolt 31 protruding from the case bottom wall 20 is attached to the bolt 31. The nut 32 is coupled, and the inflator 29 is attached and fixed to the case 17. At this time, a lead wire (not shown) of the inflator 29 is protruded from an insertion hole provided in the case 17.

  Thereafter, the airbag cover 23 is assembled to the case 17 so that each locking claw portion 19 is locked to the periphery of the locking hole 24 a. And if case 17 is arrange | positioned in the recessed part 5a of the inner panel 5, and the nut 22 is fastened to the volt | bolt 21 which protrudes from the inner panel 5, the case 17 can be fixed to the inner panel 5, and a pedestrian The air bag device M1 can be attached and fixed to the body 1 side of the vehicle. And if the lead wire (not shown) of the inflator 29 protruding from the case 17 is connected to the airbag operation circuit side (not shown) disposed on the vehicle body 1 side, the pedestrian airbag device M1 is connected to the vehicle V. Can be mounted on. Note that the attachment procedure is not limited to this, and the airbag cover 23 may be assembled to the case 17 fixed to the inner panel 5 in advance.

  After the pedestrian airbag device M1 is mounted on the vehicle V, if an operation signal is input to the inflator 29 via a lead wire (not shown), the inflation gas is discharged from the inflator 29, and the airbag 36 is inflated. Gas will flow in and expand. And the predetermined location of the cylindrical body 45 will be pushed by the airbag 36, and it will fracture | rupture, and the door part 25 of the airbag cover 23 will be pushed by the airbag 36, and the fracture | rupture planned part 26 will be fractured | ruptured. Thereafter, the door portion 25 opens toward the front side of the vehicle V, and the airbag 36 projects upward from the opening 17a of the case 17 to complete the inflation as shown in the two-dot chain line in FIGS. Will be allowed to.

  And in airbag apparatus M1 for pedestrians of embodiment, the airbag 36 and the inflator 29 are attached to the body 1 side of the vehicle V in the state covered with the cylindrical body 45 as a temperature rise suppression member. It will be fixed. That is, the cylindrical body 45 can suppress heat from the engine or the like from being transmitted to the airbag 36 and the inflator 29. Therefore, it is possible to prevent the airbag 36 from being deteriorated by the influence of heat from the engine or the like, or the performance of the inflator 29 from being changed by the influence of heat from the engine or the like.

  Therefore, in the pedestrian airbag apparatus M1 of the embodiment, the influence of heat from the engine or the like can be suppressed as much as possible.

  Further, in the pedestrian airbag device of the embodiment, it is only necessary to arrange the tubular body 45 as a temperature rise suppressing member around the airbag 36 and the inflator 29, as in the conventional pedestrian airbag device. Since it is not necessary to provide a mechanism for suppressing the temperature rise on the vehicle body side, it is not necessary to significantly change the design of the vehicle.

  Furthermore, in the pedestrian airbag apparatus M1 of the embodiment, the folded airbag 36 is stored in the tubular body 45 as a temperature rise suppressing member and maintained in the folded state, and the tubular body 45 is maintained. The configuration is housed in the case 17. Therefore, a wrapping material or the like for maintaining the folded shape of the airbag 36 may not be separately provided. Of course, if this point is not taken into consideration, the temperature rise suppressing member does not have to be a cylindrical body. For example, the temperature rise suppressing member 48 is made of a foamed synthetic resin such as polyurethane foam as shown in FIG. In addition, a groove portion 48a into which the case 17 can be fitted may be provided so that the lower side of the case 17 is covered over substantially the entire surface. In the airbag apparatus of FIG. 8, the temperature rise suppressing member 48 is fixed to the inner panel 5 of the hood panel 3 by using brackets 49 and 49 arranged along the left and right directions at both front and rear ends. The case 17 is configured to be fixed to the inner panel 5 of the hood panel 3 at a location not shown.

  Furthermore, in the pedestrian airbag apparatus M1 according to the embodiment, the insertion holes 45b and the slits 45c disposed in the cylindrical body 45 are protruded from the insertion holes 45b and the slits 45c, and the attachment pieces 43 and It is the structure sealed using silicon resin etc. so that the clearance gap which arises between this may be plugged up. Therefore, even if rainwater or the like enters the case 17, the rainwater can be prevented from entering the cylindrical body 45 from the insertion hole 45b or the slit 45c. In other words, in the pedestrian airbag device M1 of the embodiment, the entire case around the folded airbag 36 and the inflator 29 is waterproofed by the tubular body 45 as a temperature rise suppressing member. 17 and is mounted on the vehicle. Therefore, even if rainwater or the like enters the case 17, it can be accommodated in the case 17 without impairing the durability of the airbag 36 and the inflator 29.

  In this way, when waterproofing is imparted by the temperature rise suppressing member, for example, as shown in FIG. 9, foamed polyurethane is sprayed over the entire surface of the folded airbag 36 and the inflator 29 to raise the temperature. The suppressing member 50 may be formed.

  Next, a pedestrian airbag apparatus M2, which is another embodiment of the present invention, will be described. As shown in FIG. 10, the pedestrian airbag apparatus M2 according to the embodiment does not use the cylindrical body 42 as the temperature rise suppression member, and the case 17A is provided with the cooling element 52 as the temperature rise suppression member. Except for the above, the configuration is the same as that of the airbag apparatus M1 described above, and the same members are denoted by the same reference numerals and the description thereof is omitted.

  As shown in FIGS. 10 and 11, a Peltier element 52, which is a cooling element, is disposed over the substantially entire surface of the front wall portion 18a on the peripheral wall portion 18 of the case 17A. The Peltier element 52 is an element using the Peltier effect, and when a direct current is passed, the Peltier element 52 takes heat from one surface (cooling surface) and radiates the heat from the other surface (heat radiation surface). In the case of the embodiment, the Peltier element 52 is disposed so that the inside of the case 17A can be cooled with the cooling surface facing the inside of the case 17A.

  Also in the pedestrian airbag apparatus M2 having such a configuration, the airbag 36 and the inflator 29 are provided with a Peltier element 52 as a temperature rise suppression member on the front wall portion 18a side of the surrounding case 17A. In this state, it is attached and fixed to the body 1 side of the vehicle V, and the inside of the case 17A is cooled by the Peltier element 52, and heat from the engine or the like is prevented from being transmitted to the airbag 36 and the inflator 29. Can do. Therefore, it is possible to prevent the airbag 36 from being deteriorated by the influence of heat from the engine or the like, or the performance of the inflator 29 from being changed by the influence of heat from the engine or the like.

  Further, in the pedestrian airbag device M2 of the embodiment, the temperature rise inside the case 17A can be suppressed only by arranging the Peltier element 52 as a cooling element in the case 17A. The present invention can be easily applied to a pedestrian airbag apparatus without any major change in design.

  In the embodiment, the Peltier element 52 is arranged only on the front wall 18a side of the case peripheral wall 18, but the arrangement position of the Peltier element 52 is of course not limited to this, and the rear wall It is good also as a structure arrange | positioned in the lower surface side of the door part 25 used as the upper part side of the opening 17a in the part 18b, the bottom wall part 20, or the case 17A. However, considering that the engine room is disposed on the front side of the case 17A, the Peltier element 52 is preferably disposed on the front wall portion 18a side.

  Moreover, in embodiment, the airbag apparatus M1 * M2 of the structure which has arrange | positioned the temperature rise suppression member 45 * 48 * 50 * 52 so that the temperature rise of the airbag 36 and the inflator 29 may be suppressed together is illustrated. However, the temperature rise suppression member may be arranged so as to suppress the temperature rise of either the airbag or the inflator.

  Furthermore, in the embodiment, on the rear end 3a side of the hood panel 3, the pedestrian airbag devices M1 and M2 configured to be disposed in the opening 4a formed by cutting out the outer panel 4 constituting the hood panel 3. However, the position of the pedestrian airbag device to which the present invention can be applied is not limited to this. For example, the pedestrian airbag configured to be disposed on the cowl 11 is used. The present invention may be applied to an apparatus.

1 is a front view of a vehicle on which a pedestrian airbag apparatus according to an embodiment of the present invention is mounted. It is a top view of the vehicle carrying the airbag apparatus for pedestrians of the embodiment. It is a schematic sectional drawing along the vehicle front-back direction of the airbag apparatus for pedestrians of the embodiment, and respond | corresponds to the III-III site | part of FIG. It is a schematic sectional drawing along the vehicle front-back direction of the airbag apparatus for pedestrians of the embodiment, and respond | corresponds to the IV-IV site | part of FIG. It is a top view of the airbag used for the airbag apparatus for pedestrians of the embodiment. It is a schematic perspective view of the cylindrical body as a temperature rise suppression member used for the airbag apparatus for pedestrians of the embodiment. In the pedestrian airbag apparatus of the embodiment, it is a perspective view of the vehicle in a state in which the airbag is completely inflated. It is a schematic sectional drawing along the vehicle front-back direction of the airbag apparatus for pedestrians of another form. It is a schematic sectional drawing along the vehicle front-back direction of the airbag apparatus for pedestrians of another form. It is a schematic sectional drawing along the vehicle front-back direction of the airbag apparatus for pedestrians which is other embodiment of this invention. It is a schematic perspective view of the case used in the airbag apparatus for pedestrians of the embodiment.

Explanation of symbols

1 ... Body
3 ... food panel,
17.17A ... Case,
17a ... opening,
23 ... Airbag cover,
29 ... Inflator,
36 ... Airbag,
45 ... cylindrical body (temperature rise suppression member),
48, 50 ... temperature rise suppression member,
52 ... Cooling element (temperature rise suppressing member),
ER ... engine room,
V ... Vehicle,
M1, M2 ... Pedestrian airbag device.

Claims (5)

Located near the rear edge of the hood panel of the vehicle,
An airbag that is folded and stored in a case, and inflated by inflating gas,
An inflator that is housed in the case together with the airbag and configured to supply inflation gas to the airbag;
A pedestrian airbag device having a configuration comprising:
A pedestrian airbag apparatus, wherein at least the airbag among the components of the pedestrian airbag apparatus is mounted on the vehicle with a temperature rise suppression member disposed around the airbag.   2. The pedestrian airbag according to claim 1, wherein the temperature rise suppression member is formed of a cylindrical body that is formed of a foam and covers the airbag so that the folded state can be maintained. apparatus. Located near the rear edge of the hood panel of the vehicle,
An airbag that is folded and stored in a case, and inflated by inflating gas,
An inflator that is housed in the case together with the airbag and configured to supply inflation gas to the airbag;
A pedestrian airbag device having a configuration comprising:
A pedestrian airbag apparatus, wherein at least the inflator among the components of the pedestrian airbag apparatus is mounted on the vehicle with a temperature rise suppression member disposed around the inflator.   The temperature rise suppression member is configured by a cooling element that is disposed in a case in which the airbag and the inflator are accommodated and configured to be able to cool the inside of the case. The pedestrian airbag apparatus according to 1 or 3.   The said temperature rise suppression member has waterproofness, and is arrange | positioned so that the whole circumference | surroundings of the said airbag and the said inflator which were folded up may be covered. Air bag device for pedestrians.

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