JP4935646B2 - Knee airbag device for vehicle - Google Patents

Description

  The present invention relates to a vehicle knee airbag device.

In the occupant protection device, before mounting the vehicle, the knee protection airbag device and the grab box (storage box) are assembled together in advance to form a mounting assembly, and the mounting assembly is attached to the vehicle. A configuration in which the knee protection airbag device and the storage box are mounted on a vehicle is disclosed (see Patent Document 1). Further, there is disclosed an occupant protection device in which a lid of a grab box (storage box) and an airbag cover are integrally molded into one molded product (see Patent Document 2).
JP 2004-203226 A Japanese Patent Laid-Open No. 2004-203222

  However, in the conventional example described in Patent Document 1 described above, there is a clear parting line between the grab box and the airbag cover of the knee airbag device, so there is room for improvement in terms of appearance. In the conventional example described in Patent Document 2 described above, the knee airbag device and the grab box are integrally assembled before being mounted on the vehicle, but the boundary portion between the upper edge of the airbag cover and the lid. There is room for improvement in terms of appearance because the hinge portion made of an integral hinge is exposed in the vicinity.

  In view of the above-described facts, an object of the present invention is to improve the appearance of the passenger compartment by reducing the number of parting lines at the position of the knee airbag device.

According to a first aspect of the present invention, a module case includes a folded knee airbag and an inflator capable of supplying gas to the knee airbag. A knee airbag module configured to be inflated and deployed to the occupant's knee side upon receipt of the gas supply, and a lower part of the grab box disposed to cover the knee airbag module from above the vehicle. Of the outer panel on the occupant side of the grab box, the outer panel is provided corresponding to the position of the knee airbag module and is broken by the inflation pressure of the knee airbag. part is deployed, anda breakable portion to bulge to the occupant side from the knee air bag in the module case, The bottom panel is provided with a fixing part that is fixed to the inner surface of the outer panel in advance and a folding part provided on the upper edge of the fixing part via a hinge part before the knee airbag module is assembled to the grab box. And the folding part is in a state of standing along the inner surface of the outer panel when the knee airbag module is assembled. After assembling, the knee airbag module is fixed to the wall portion on the side opposite to the occupant of the grab box with the knee airbag module covered from above the vehicle .

  In the knee airbag device for a vehicle according to claim 1, the knee airbag module disposed in the lower part of the grab box is covered from above the vehicle by the bottom panel, and the bottom panel has a storage space in the grab box. Because it is the bottom of the, the appearance when the grab box is opened is good.

  In the vehicle knee airbag device according to claim 1, the rupture scheduled portion is provided in the outer panel on the occupant side of the grab box corresponding to the arrangement position of the knee airbag module. As can be seen, there is no parting line that suggests the presence of the knee airbag module at the lower part of the outer panel corresponding to the arrangement position. For this reason, the appearance of the passenger compartment can be improved.

Furthermore, the lower part of the grab box, which is the space for installing the knee airbag module, can be exposed by raising the retractable part of the bottom panel along the inner surface of the outer panel of the grab box. Becomes easy.
The foldable part of the bottom panel is the wall on the non-occupant side of the grab box with the knee airbag module lying down around the hinge and covering the knee airbag module from above the vehicle after assembly of the knee airbag module to the lower part of the grab box Fixed to the part.

Thus, in the vehicle knee airbag device according to claim 1, the knee airbag module is assembled to the lower part of the grab box and the knee airbag module is easily covered with the foldable portion of the bottom panel. be able to.

According to a second aspect of the present invention, a module case includes a folded knee airbag and an inflator capable of supplying gas to the knee airbag. A knee airbag module configured such that the bag is inflated and deployed to the occupant's knee side by receiving the gas;
Corresponding to the position of the knee airbag module among the bottom panel disposed to cover the knee airbag module from above the vehicle and the outer panel on the passenger side of the grab box at the lower part of the grab box A portion to be expanded by breaking the knee airbag by the inflation pressure of the knee airbag, and a planned breakage portion for expanding the knee airbag from the module case to the occupant side. The bottom panel is configured to be inserted from a side portion of the grab box after the knee airbag module is assembled and to cover the knee airbag module from above the vehicle.

In the knee airbag device for a vehicle according to claim 2, the knee airbag module disposed in the lower part of the grab box is covered with a bottom panel from above the vehicle, and the bottom panel has a storage space in the grab box. Because it is the bottom of the, the appearance when the grab box is opened is good.

Further, among the outer panels on the occupant side of the grab box, there is an expected breakage portion corresponding to the position where the knee airbag module is disposed, so that the lower portion of the outer panel corresponding to the position is viewed from the occupant side. In addition, there is no parting line that suggests the existence of a knee airbag module. For this reason, the appearance of the passenger compartment can be improved.

Further, after the knee airbag module is assembled to the lower part of the grab box, the bottom panel is inserted from the side of the grab box to cover the knee airbag module from above the vehicle. Assembly of the bag module and attachment of the bottom panel can be easily performed.

According to a third aspect of the present invention, in the knee airbag device for a vehicle according to the first or second aspect, the end of the module case protrudes from a side surface of the grab box to open and close the grab box. A stud is provided as a rotating shaft.

In the knee airbag device for a vehicle according to claim 3 , since the stud is provided at the end of the module case so as to protrude from the side surface of the grab box and serve as a rotation shaft when opening and closing the grab box. When the knee of the occupant is restrained by the knee airbag, the load input to the grab box can be transmitted to the instrument panel side via the stud. For this reason, the conventionally used reaction force holding bracket can be omitted, the manufacturing cost of the vehicle knee airbag device can be reduced, and the vehicle knee airbag device can be reduced in weight.

According to a fourth aspect of the present invention, in the vehicle knee airbag device according to any one of the first to third aspects, a rib is provided on a surface of the bottom panel on the knee airbag module side. It is characterized by projecting toward the bag module.

In the vehicle knee airbag device according to claim 4 , since the rib is formed to protrude toward the knee airbag module on the surface of the bottom panel on the knee airbag module side, the bottom surface of the storage space in the grab box As a result, more strength of the bottom panel can be secured.

  As described above, according to the vehicle knee airbag device of the first aspect of the present invention, it is possible to obtain an excellent effect that the appearance of the passenger compartment can be improved.

According to the knee airbag device for a vehicle according to claim 2, it is possible to obtain an excellent effect that the knee airbag module can be easily assembled to the lower portion of the grab box and the bottom panel can be easily attached. .

According to the vehicle knee airbag device of the third aspect , it is possible to obtain an excellent effect of reducing the manufacturing cost of the knee airbag device and reducing the weight of the knee airbag device.

According to the knee airbag device for a vehicle according to claim 4 , it is possible to obtain an excellent effect that more strength of the bottom panel as the bottom surface of the storage space in the grab box can be secured.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
In FIG. 1, a vehicle knee airbag device 10 according to the present embodiment is, for example, a knee airbag device for a passenger seat, and as shown in FIG. 2, a knee airbag module 12, a bottom panel 14, , And a tear line 16 as an example of a planned fracture portion.

  The knee airbag module 12 includes a folded knee airbag 22 and an inflator 24 that can supply gas to the knee airbag 22 in a module case 26. The knee airbag 22 is configured to be inflatable and deployable to the occupant's knee 28 (FIG. 6) side upon receipt of gas supply.

  As shown in FIG. 2, the grab box 18 is a storage case provided in an opening (not shown) of the instrument panel 38 in front of the passenger seat, and includes an outer panel 30 on the passenger side (vehicle rear side), The side wall portions 32 and 34 on both sides in the vehicle width direction and the wall portion 36 on the side opposite to the occupant (the vehicle front side) constitute a storage case that opens on the vehicle upper side.

  An elongated hole 32 </ b> A that opens to the upper edge of the side wall portion 32 and extends to the lower portion of the side wall portion 32 is formed in the side wall portion 32 on the left side of the vehicle. In the side wall portion 34 on the right side of the vehicle, a long hole equivalent to the long hole 32A or a circular through hole (both not shown) is located at a position symmetrical to the lower end of the long hole 32A in the vehicle width direction. Is formed. As shown in FIG. 4, for example, three through holes 36 </ b> A are formed in series in the vehicle width direction in the wall portion 36 on the side opposite to the occupant in the grab box 18.

  As shown in FIG. 3, the module case 26 is a resin member formed in, for example, a U-shaped cross section with an opening on the passenger side (vehicle rear side). For example, end plates 40 are attached to both ends of the module case 26 in the vehicle width direction, whereby both ends of the module case 26 are closed.

  As shown in FIG. 2, studs 42 that protrude from the side surface of the grab box 18 and serve as a rotation shaft when the grab box 18 is opened and closed are provided at the ends of the module case 26 on both sides in the vehicle width direction, for example. Yes. The stud 42 is fixed to the end plate 40.

  The stud 42 may be integrally formed with the end plate 40. Further, when the through holes for inserting the studs 42 are provided in the side wall portions 32, 34 of the grab box 18 in place of the long holes 32A, the studs are considered in consideration of the assembling property of the knee airbag module 12. 42 may be configured to be elastically stretchable in the vehicle width direction, for example.

  As shown in FIGS. 3 and 4, for example, three protrusions 26 </ b> A are provided in series in the vehicle width direction at the lower portion of the module case 26. On the other hand, an inner door 44 corresponding to the arrangement position of the knee airbag module 12 is welded to the inner surface 30A of the outer panel 30, for example. The inner door 44 is formed using, for example, a TPO material (thermoplastic elastomer), and includes an upper portion 44A facing the opening of the module case 26, a lower portion 44C having a protruding portion 44B toward the vehicle front side, and an upper portion 44A. And a hinge portion 44D for connecting the lower portion 44C and the lower portion 44C are integrally formed. The inner door 44 is welded to the outer panel 30 at the upper part 44A and the lower part 44C. Note that the method of fixing the inner door 44 to the inner surface 30A of the outer panel 30 is not limited to welding, and may be, for example, adhesion or screwing.

  The protruding portion 26A of the module case 26 is fitted into an insertion hole 44E provided in the protruding portion 44B of the inner door 44, whereby the knee airbag module 12 is fixed to the lower portion of the grab box 18. In addition, the fixing means of the knee airbag module 12 with respect to the grab box 18 is not restricted to this.

  The inflator 24 is connected to an airbag ECU (not shown) and is operated by an operating current from the airbag ECU so as to supply an inflation gas to the knee airbag 22. Yes. The airbag ECU is configured to flow an operating current to the inflator 24 when a frontal collision of the vehicle is determined based on a signal from a collision sensor (not shown). The inflator 24 is accommodated in the folded knee airbag 22, and is accommodated and fixed in the module case 26 together with the knee airbag 22, for example, while being covered with a covering material 46.

  The bottom panel 14 is disposed below the grab box 18 so as to cover the knee airbag module 12 from above the vehicle. Specifically, as shown in FIGS. 4 and 5, the bottom panel 14 includes a fixing portion 14 </ b> A that is fixed to the inner surface 30 </ b> A of the outer panel 30 in advance before the knee airbag module 12 is assembled to the grab box 18. , And a retractable portion 14C provided on the upper edge of the fixed portion 14A via a hinge portion 14B.

  For example, three claw portions 14D are provided in series in the vehicle width direction on the upper edge of the retractable portion 14C. As shown in FIG. 3, two ribs 14 </ b> R extending in the vehicle width direction, for example, are formed on the surface of the retractable portion 14 </ b> C on the knee airbag module 12 side so as to protrude toward the knee airbag module 12. ing.

  As shown in FIG. 5, the retractable portion 14 </ b> C is in a state of being erected along the inner surface 30 </ b> A of the outer panel 30 when the knee airbag module 12 is assembled. Thereby, since the lower part of the grab box 18 which is the arrangement | positioning space of the knee airbag module 12 can be exposed, access to this lower part becomes easy.

  After the knee airbag module 12 is assembled, the collapsible portion 14C is laid down in the arrow A direction around the hinge portion 14B. At this time, the claw portions 14D provided on the upper edge of the retractable portion 14C engage with the through holes 36A provided in the wall portion 36 on the side opposite to the occupant in the grab box 18, respectively. As a result, the retractable portion 14 </ b> C of the bottom panel 14 is engaged and fixed to the wall portion 36 on the non-occupant side of the grab box 18 in a state where the knee airbag module 12 is covered from above the vehicle. Thus, in the vehicle knee airbag device 10, the knee airbag module 12 is assembled to the lower part of the grab box 18, and the knee airbag module 12 is easily covered with the retractable portion 14 </ b> C of the bottom panel 14. be able to.

  In order to increase the strength of the retractable portion 14C and suppress the generation of abnormal noise during normal use, the rib 14R of the bottom panel 14 in the assembled state of the knee airbag module 12 and the bottom panel 14 in FIG. Is preferably in contact with the upper surface of the module case 26.

  The fixing of the retractable portion 14C of the bottom panel 14 and the wall portion 36 on the side opposite to the passenger is not limited to the above configuration. For example, instead of the through hole 36A of the wall 36, a protrusion (not shown) is provided at a position corresponding to the through hole 36A on the inner surface 36B of the wall 36, and the claw 14D of the bottom panel 14 You may comprise so that it may engage with a part. Moreover, you may make it use this projection part and 36 A of through-holes together. Further, the retractable portion 14C may be fixed to the wall portion 36 by screwing.

  2 to 4, the tear line 16 is an example of a planned fracture portion provided in the outer panel 30 on the occupant side of the grab box 18 corresponding to the arrangement position of the knee airbag module 12. The tear line 16 is broken by the inflation pressure of the knee airbag 22 so that a part of the outer panel 30 is deployed as a door portion 48 (FIG. 6), and the knee line 22 is formed through the opening 50 (FIG. 6) formed thereby. The airbag 22 is configured to inflate from the module case 26 toward the passenger.

  Specifically, as shown in FIGS. 2 to 4, the tear line 16 is a linear thin wall provided along the upper edge and both side edges of the upper portion 44 </ b> A of the inner door 44 in the inner surface 30 </ b> A of the outer panel 30. It is comprised as a part, ie, a weak part, and is comprised so that it may not appear on the passenger | crew side surface of the outer panel 30. FIG. As shown in FIG. 3, the upper edge of the upper portion 44A of the inner door 44 and the lower edge of the fixing portion 14A of the bottom panel 14 are slightly separated in the vehicle vertical direction, and the inner surface 30A of the outer panel 30 in the gap portion. A horizontal portion of the tear line 16 is formed in the upper part. Note that the tear line 16 is not limited to a continuous one, and may be intermittent.

(Function)
This embodiment is configured as described above, and the operation thereof will be described below. In FIG. 1, in the knee airbag device 10 for a vehicle, a knee airbag module 12 disposed at a lower portion of a grab box 18 is covered from above the vehicle by a bottom panel 14, and a retractable portion of the bottom panel 14 is provided. Since 14C is the bottom surface of the storage space in the grab box 18, the knee airbag module 12 is not exposed when the grab box 18 is opened, and the appearance is good.

  Further, in the vehicle knee airbag device 10, the tear line 16 is provided in the inner surface 30 </ b> A of the outer panel 30 on the passenger side of the grab box 18 corresponding to the arrangement position of the knee airbag module 12. As seen from the above, there is no parting line that suggests the presence of the knee airbag module 12 at the lower part of the outer panel 30 corresponding to the arrangement position. For this reason, the appearance of the passenger compartment can be improved.

  Further, as shown in FIG. 3, in the vehicle knee airbag device 10, a rib 14 </ b> R is formed to protrude toward the knee airbag module 12 on the surface of the bottom panel 14 on the knee airbag module 12 side. Therefore, more strength of the bottom panel 14 as the bottom surface of the storage space in the grab box 18 can be ensured.

  Next, the operation of the vehicle knee airbag device 10 during a frontal collision of the vehicle will be described. When the vehicle collides with the front and the airbag ECU determines the occurrence of the front collision based on a signal from the collision sensor, an ignition current is supplied to the inflator 24. The inflator 24 is operated by the ignition current to generate a large amount of gas. When this gas is supplied to the knee airbag 22, the knee airbag 22 starts to expand.

  Then, the covering material 46 is broken by the inflation pressure of the knee airbag 22, and the inflation pressure acts on the upper portion 44 </ b> A of the inner door 44. The upper portion 44A is welded to the inner surface 30A of the outer panel 30 in the grab box 18, and the tear line 16 is provided along the upper edge and both side edges of the upper portion 44A of the inner door 44 of the inner surface 30A. When the inflation pressure of the knee airbag 22 acts on the upper portion 44 </ b> A of the inner door 44, the outer panel 30 is broken at the tear line 16.

  As a result, as shown in FIG. 6, the upper portion 44A of the inner door 44 rotates toward the rear of the vehicle about the hinge portion 44D, and part of the outer panel 30 becomes the door portion 48 along with this, and the passenger side (vehicle An opening 50 is formed in the outer panel 30. The knee airbag 22 is inflated from the opening 50 toward the occupant side (the vehicle rear side) and is deployed between the occupant's knee 28 and the grab box 18. The knee airbag 28 (FIG. 6) of the occupant can be restrained by the knee airbag 22 deployed in this manner.

  When the knee part 28 of the occupant is restrained by the deployed knee airbag 22, a load is input from the knee part 28 to the grab box 18 through the knee airbag 22. Here, as shown in FIG. 2, in the vehicle knee airbag device 10, the end of the module case 26 protrudes from the side surface of the grab box 18, that is, from the side wall 34, and when the grab box 18 is opened and closed. Since the stud 42 serving as the rotation shaft is provided, the load input to the grab box 18 when the knee is restrained is transmitted to the instrument panel 38 side via the stud 42. Therefore, the conventionally used reaction force holding bracket can be omitted, and the manufacturing cost of the vehicle knee airbag device 10 can be reduced and the vehicle knee airbag device 10 can be reduced in weight. it can.

[Second Embodiment]
7, in the vehicle knee airbag device 20 according to the present embodiment, the bottom panel 54 is inserted from the side portion of the grab box 18, for example, the insertion hole 32 </ b> B of the side wall portion 32 after the knee airbag module 12 is assembled. Thus, the knee airbag module 12 is configured to be covered from above the vehicle.

  Specifically, as shown in FIG. 9, the bottom panel 54 includes, for example, a flat plate-like general portion 54 </ b> A formed to have a size capable of covering the knee airbag module 12 from above the vehicle, and the general portion. For example, it has two ribs 54R that protrude from the lower surface of 54A and extend in the vehicle width direction. On the other hand, an insertion hole 32B corresponding to the cross-sectional shape of the bottom panel 54 is formed in the side wall 32 of the grab box 18 on the left side of the vehicle, for example. Note that an insertion hole corresponding to the insertion hole 32B may be provided in the side wall 34 on the right side of the vehicle, and the bottom panel 54 may be inserted from the insertion hole.

  For example, a pair of bank portions 52 extending in the vehicle width direction is formed at a height position corresponding to the insertion hole 32 </ b> B in the inner surface 30 </ b> A of the outer panel 30. The pair of bank portions 52 are separated corresponding to the thickness of the general portion 54 </ b> A of the bottom panel 54, and the gap portion serves as a support groove 56 of the bottom panel 54. In addition, a similar pair of bank portions 52 and support grooves 56 are also formed at height positions corresponding to the insertion holes 32B on the inner surface 36B of the wall portion 36. These front and rear support grooves 56 can support the bottom panel 54 inserted from the insertion hole 32B of the side wall portion 32. Although illustration is omitted, in the assembled state of the bottom panel 54, the vehicle right end portion of the bottom panel 54 reaches the side wall portion 34 on the vehicle right side. The support structure of the bottom panel 54 is not limited to this.

  Since other parts are the same as those in the first embodiment, the same parts are denoted by the same reference numerals in the drawings, and the description thereof is omitted.

(Function)
This embodiment is configured as described above, and the operation thereof will be described below. 7, in the knee airbag device 20 for a vehicle, the knee airbag module 12 disposed in the lower portion of the grab box 18 is covered from above the vehicle by the bottom panel 54, and the general portion 54A of the bottom panel 54 is covered. However, since it is the bottom surface of the storage space in the grab box 18, the knee airbag module 12 is not exposed when the grab box 18 is opened, and the appearance is good.

  Further, in the vehicle knee airbag device 20, after the knee airbag module 12 is assembled to the lower portion of the grab box 18, the bottom panel 54 is inserted from the insertion hole 32 </ b> B of the side wall 32 that is the side of the grab box 18. Since the knee airbag module 12 is configured to cover the vehicle from above, assembly of the knee airbag module 12 and attachment of the bottom panel 54 can be easily performed. Further, by removing the bottom panel 54, the maintenance work of the knee airbag module 12 can be easily performed.

  Further, as shown in FIG. 8, the rib 54R is formed to protrude toward the knee airbag module 12 on the surface (lower surface) on the knee airbag module 12 side in the general portion 54A of the bottom panel 54. The strength of the bottom panel 54 as the bottom surface of the storage space in the grab box 18 can be ensured more.

  Since the action at the time of a frontal collision of the vehicle is the same as that of the first embodiment, the description thereof is omitted.

  In addition, although the tear line 16 was mentioned as an example of the part to be broken, the part to be broken is not limited to this, and a part of the outer panel 30 may be deployed in a door shape by the inflation pressure of the knee airbag 22. Any configuration may be used if possible.

  Further, the knee airbag devices 10 and 20 for a vehicle have been described as knee airbag devices for a passenger seat, but other seats may be used as long as a seat is provided with a storage case such as a grab box in front of the knee portion of a seated passenger. It can also be applied to seats.

1 to 6 relate to the first embodiment, and FIG. 1 is a perspective view showing a grab box, an instrument panel, and the like in which a vehicle knee airbag device is built. It is a perspective view showing a knee airbag device for vehicles. It is sectional drawing which shows the knee airbag apparatus for vehicles. It is a disassembled perspective view which shows the knee airbag apparatus for vehicles. In a knee airbag device for a vehicle, after the fallable part of the bottom panel stands along the inner surface of the outer panel and the knee airbag module is assembled to the lower part of the grab box, the fallen part is laid down and the claw part is placed on the non-occupant side. It is sectional drawing which shows the state engaged and fixed to the wall part. It is sectional drawing which shows the state which the knee airbag expanded and deployed between the passenger | crew's knee part and the outer panel. FIGS. 7 to 9 relate to the second embodiment, and FIG. 7 is a perspective view showing a vehicle knee airbag device. It is sectional drawing which shows the knee airbag apparatus for vehicles. It is a disassembled perspective view which shows the knee airbag apparatus for vehicles.

DESCRIPTION OF SYMBOLS 10 Vehicle knee airbag device 12 Knee airbag module 14 Bottom panel 14A Fixing part 14B Hinge part 14C Retractable part 14R Rib 16 Tier line 18 Grab box 20 Vehicle knee airbag apparatus 22 Knee airbag 24 Inflator 26 Module case 28 Knee 30 Outer panel 30A Inner surface 32 Side wall (side)
36 Non-passenger side wall 42 Stud 54 Bottom panel 54R Rib 56 Support groove

Claims (4)

The module case includes a folded knee airbag and an inflator capable of supplying gas to the knee airbag. The knee airbag supplies the gas. A knee airbag module configured to receive and inflate and deploy to the occupant's knee side;
At the bottom of the grab box, a bottom panel disposed so as to cover the knee airbag module from above the vehicle;
Of the outer panel on the passenger side of the grab box, provided corresponding to the position where the knee airbag module is disposed, by breaking by the inflation pressure of the knee airbag, a part of the outer panel is deployed, A portion to be ruptured for inflating a knee airbag from the module case to the occupant side;
Have
The bottom panel is provided with a fixed portion that is fixed to the inner surface of the outer panel in advance before the knee airbag module is assembled to the grab box, and a folding portion that is provided on the upper edge of the fixed portion via a hinge portion. And configured with
The collapsible part is in a state of being erected along the inner surface of the outer panel when the knee airbag module is assembled. After the knee airbag module is assembled, the collapsible part is centered on the hinge part. A vehicle knee airbag device fixed to a wall portion on the side opposite to the occupant of the grab box in a state where the knee airbag module is covered from above the vehicle. The module case includes a folded knee airbag and an inflator capable of supplying gas to the knee airbag. The knee airbag supplies the gas. A knee airbag module configured to receive and inflate and deploy to the occupant's knee side;
At the bottom of the grab box, a bottom panel disposed so as to cover the knee airbag module from above the vehicle;
Of the outer panel on the passenger side of the grab box, provided corresponding to the position where the knee airbag module is disposed, by breaking by the inflation pressure of the knee airbag, a part of the outer panel is deployed, A portion to be ruptured for inflating a knee airbag from the module case to the occupant side;
Have
The vehicle knee airbag device is configured such that the bottom panel is inserted from a side portion of the grab box after the knee airbag module is assembled and covers the knee airbag module from above the vehicle. 3. The stud according to claim 1, wherein a stud that protrudes from a side surface of the grab box and serves as a rotating shaft when the grab box is opened and closed is provided at an end of the module case. Vehicle knee airbag device. 4. The rib according to claim 1, wherein a rib is formed to protrude toward the knee airbag module on a surface of the bottom panel on the knee airbag module side. 5. Vehicle knee airbag device.

Images