JP4989754B2 - instrument panel - Google Patents

Description

  The present invention relates to an instrument panel, for example, an instrument panel that is used in common with a specification vehicle with a passenger seat airbag and a specification vehicle without a passenger seat airbag.

The instrument panel installed in front of the driver's seat of the vehicle (hereinafter sometimes referred to simply as “instrument panel”) is lighter (thin wallet) on the assumption that an airbag device (an airbag device for the passenger seat) is attached. ).
In addition, the above-mentioned weight-reduced instrument panel is not only a vehicle with a passenger-side airbag device (specifically equipped with a passenger-seat airbag), but also a passenger-seat by sharing parts. It is also mounted on a vehicle with a specification that cannot be fitted with an airbag device (a vehicle without a passenger seat airbag).

However, the instrument panel that has been reduced in weight (thinned) as described above has a problem that the rigidity is insufficient when mounted on a passenger-side airbag-less specification vehicle.
For this reason, there have been proposals for solving the shortage of instrument panel rigidity.
For example, Patent Document 1 proposes that a rigidity reinforcing member (connecting member) is attached to ensure rigidity when the instrument panel is installed in a passenger-side airbag-less specification vehicle.
Hereinafter, a conventional instrument panel structure described in Patent Document 1 will be described with reference to FIGS. 7 and 8.

As shown in FIGS. 7 and 8, the instrument panel structure described in Patent Document 1 includes a retainer 112 disposed on the back surface of an upper portion (instrument upper) 110 a of the instrument panel 110, and a vehicle body side reinforcing member that supports the instrument panel 110. A configuration is adopted in which the connecting member 114 is bridged and fixed between the (instrumental force) 126.
Specifically, the instrument panel structure includes an instrument panel 110 having an opening 120 for deploying an airbag in an instrument panel upper 110 a and a retainer 112 disposed on the instrument panel 110 so as to close the opening 120. In addition, the instrument panel structure includes a connecting member 114 having one end connected to the instrument panel reinforcement 126 and the other end connected to the edge of the retainer 112 when installed in a passenger-side airbag-free vehicle. Yes.

With the above configuration, even if the instrument panel 110 that is lightened (thinned) is mounted on a passenger-side airbag-less specification vehicle, the lack of rigidity of the instrument panel 110 can be compensated.
Note that when the instrument panel 110 is mounted on a passenger-side airbag-equipped specification vehicle, rigidity is ensured by the airbag device without attaching the connecting member 114.

  For example, Patent Document 2 proposes a structure of a rigid reinforcing member (reinforcing member) 220 attached to the lower surface of the instrument panel 210.

Specifically, as shown in FIG. 9, the reinforcing member 220 includes an upper wall 221 having a required length extending in the vehicle width direction along the lower surface of the instrument panel 210, and the upper wall 221 being spaced apart from the four peripheral ends thereof. The hollow body 225 formed by the lower wall 231 joined to the upper wall 221 by the flange portion 232, and the upper wall 221 and the lower wall 231 are extended downward from the left and right rear ends of the hollow body 225, and the upper wall 221 And a lower wall 231 and a leg portion 227 formed hollow.
In the reinforcing member 220, the upper end of the leg portion 227 is fastened to the lower surface of the instrument panel 210, and the lower end of the leg portion 227 is fastened to the lower structural member 251 of the instrument panel 210.
By using the reinforcing member 220 having the above-described configuration, it is possible to achieve “reinforcement of the entire instrument panel 210” and “improvement of rigidity against pressing of the upper surface of the instrument panel 210”.

JP 2008-80835 A JP 2005-186840 A

However, the method for increasing the rigidity of the instrument panel described in the above-described conventional technology (the technology described in Patent Document 1 and Patent Document 2) has a technical problem of increasing the cost of the vehicle.
Specifically, the techniques described in Patent Document 1 and Patent Document 2 both employ a configuration in which a separate rigid reinforcing member (a connecting member or a reinforcing member) is attached to the instrument panel. Due to the “part cost” and “installation work cost” of the reinforcing member, the cost of the vehicle is increased.
In particular, in the region (or country) in which specification vehicles without airbags occupy the mainstream, the above-described cost increase is a serious problem.

  The present invention has been made to solve the above technical problem, and the object of the present invention can be used in common with a passenger-seat airbag specification vehicle and a passenger-seat airbag-free specification vehicle, The object is to provide a low-cost instrument panel that is rigid and secure.

The present invention made in order to solve the above problems is an instrument panel used in common with a passenger-seat airbag specification vehicle and a passenger-seat airbag-free specification vehicle. A retainer welding surface for vibrating and welding an air bag retainer that accommodates and holds the bag device is formed, and a plurality of reinforcing ribs are formed on the back surface of the instrument panel including the retainer welding surface, and the retainer welding surface is formed on the retainer welding surface. The formed reinforcing rib is characterized by standing upright with respect to the retainer welding surface.
Further, the reinforcing rib formed on the retainer welding surface is tilted in a certain direction and sandwiched between the airbag retainer and the retainer welding surface in the step of vibration welding the airbag retainer to the retainer welding surface. It is desirable that it is made to be.

Thus, since the instrument panel of the present invention has a plurality of reinforcing ribs on the back surface side, it can have a predetermined rigidity even if it is lightened (thinned).
That is, the instrument panel according to the present invention secures a predetermined rigidity by providing a plurality of reinforcing ribs. Therefore, even when the instrument panel is mounted on a passenger-side airbag-less specification vehicle, In addition, it is not necessary to attach a rigid reinforcing member (a connecting member or a reinforcing member).
Therefore, by using the instrument panel of the present invention, it is possible to reduce the cost of a vehicle (particularly, a passenger seat-free specification vehicle).

In the present invention, the reinforcing rib formed on the retainer welding surface is inclined with respect to the retainer welding surface.
Therefore, in the step of vibration welding the air bag retainer to the retainer welding surface, the reinforcing rib formed on the retainer welding surface is tilted in a predetermined direction (the reinforcing rib can be tilted by the pressure load applied during the vibration welding) The reinforcing rib can be sandwiched between the retainer and the retainer welding surface.
When the airbag retainer is welded to the retainer welding surface, the reinforcing rib formed on the retainer welding surface is sandwiched between the airbag retainer and the retainer welding surface.
That is, the instrument panel of the present invention can be attached to the back surface (retainer welding surface) of the airbag retainer by vibration welding even though the instrument panel according to the present invention employs a configuration in which reinforcing ribs are formed on the back surface. It has become.

Further, it is desirable that the reinforcing rib formed on the retainer welding surface is formed by being arranged obliquely in the molding direction view of the instrument panel in the injection molding process.
With the above configuration, the above-described inclined reinforcing rib can be formed without troublesome work in the injection molding process.

  Further, the present invention for solving the above problems is an instrument panel that is used in common with a passenger-seat airbag specification vehicle and a passenger-seat airbag-free specification vehicle, on the back of the instrument panel, A retainer welding surface on which an airbag retainer for housing and holding the back device is vibration welded is formed, and a plurality of first reinforcing ribs and a plurality of second reinforcing ribs are formed on the back surface of the instrument panel. 1 reinforcement rib is formed in the area | regions other than the said retainer welding surface of the back surface of the said instrument panel, and while the said 2nd reinforcement rib is formed in the said retainer welding surface at least, with respect to this retainer welding surface It is characterized by standing upright.

As described above, the instrument panel of the present invention can ensure a predetermined rigidity by the plurality of reinforcing ribs (the first reinforcing rib and the second reinforcing rib) formed on the back surface thereof. There is no need to attach a reinforcing member (a connecting member or a reinforcing member), and the cost of the vehicle can be reduced.
In addition, since the second reinforcing rib is inclined with respect to the retainer welding surface, the pressure load received by the second reinforcing rib via the airbag retainer in the step of vibration welding the airbag retainer to the retainer welding surface. Therefore, it bends in a predetermined direction and falls down. Thereby, an airbag retainer can be welded to the retainer welding surface.
That is, the instrument panel of the present invention adopts a configuration in which reinforcing ribs (first reinforcing rib and second reinforcing rib) are formed on the back surface, and an air bag on the back surface (retainer welding surface formed on the back surface). The retainer can be attached by vibration welding.

The first reinforcing ribs and the second reinforcing ribs are alternately formed along a vehicle width direction of a vehicle on which the instrument panel is mounted, and the second reinforcing ribs cross over the retainer welding surface. In addition, it is desirable that both end portions extend to a region outside the retainer welding surface and that both end portions are opposed to the adjacent first reinforcing ribs.
Thus, the rigidity of the instrument panel can be ensured by forming the first reinforcing rib and the second reinforcing rib.

  According to the present invention, it is possible to provide a low-cost instrument panel that can be used for both a passenger-side airbag-equipped specification vehicle and a passenger-side airbag-less specification vehicle and that has a predetermined rigidity. .

It is the schematic diagram which showed the structure of the back surface of the instrument panel of 1st Embodiment of this invention, (a) is the schematic diagram which looked at the instrument panel of 1st Embodiment from the back surface side, (b) It is the schematic diagram which expanded and showed the reinforcement rib formed in the back surface of the instrument panel of 1st Embodiment. It is the schematic diagram which showed the AA cross section of FIG.1 (b). It is the schematic diagram which showed the BB cross section of FIG.1 (b). It is the schematic diagram which showed the state by which the airbag retainer which accommodated and hold | maintained the airbag apparatus was attached to the instrument panel of 1st Embodiment of this invention. It is the schematic diagram which showed the process of vibrating and welding an airbag retainer to the retainer welding surface of the instrument panel of 1st Embodiment of this invention. It is the schematic diagram which showed the structure of the back surface of the instrument panel of 2nd Embodiment of this invention, (a) is the schematic diagram which looked at the instrument panel of 2nd Embodiment from the back surface side, (b) It is the schematic diagram which expanded and showed the reinforcement rib formed in the back surface of the instrument panel of 2nd Embodiment. It is a perspective view of the instrument panel of a prior art. It is the schematic diagram which showed the cross section of the instrument panel of a prior art, and a connection member. It is the schematic diagram which showed the cross section of the instrument panel and reinforcement member of a prior art.

Hereinafter, an instrument panel according to an embodiment of the present invention will be described with reference to the drawings.
First, the instrument panel of 1st Embodiment of this invention is demonstrated based on FIG. 1 thru | or FIG.

Here, FIG. 1 is a schematic view showing the structure of the back surface of the instrument panel according to the first embodiment of the present invention. FIG. 1 (a) shows the instrument panel according to the first embodiment as viewed from the back surface side. FIG. 1B is an enlarged schematic view of the reinforcing rib formed on the back surface of the instrument panel of the first embodiment.
2 is a schematic diagram showing the AA cross section of FIG. 1 (b), and FIG. 3 is a schematic diagram showing the BB cross section of FIG. 1 (b).
FIG. 4 is a schematic view showing a state in which an airbag retainer that houses and holds an airbag apparatus is attached to the instrument panel of the first embodiment of the present invention. FIG. 5 is a schematic view showing a step of vibrating and welding the airbag retainer to the retainer welding surface of the instrument panel according to the first embodiment of the present invention.
In addition, the instrument panel of 1st Embodiment has the characteristics in the structure of the reinforcement rib formed in the back surface of an upper part, The other structure (shape and material) is the same as that of a well-known technique. Therefore, hereinafter, the characteristic structure of the first embodiment will be described in detail, and the description of other structures will be simplified.

The instrument panel (instrument panel) 1 according to the first embodiment of the present invention is configured so that it can be used in common for a specification vehicle with a passenger seat airbag and a specification vehicle without a passenger seat airbag.
In addition, the instrument panel 1 is made of synthetic resin, is lightened (thinned), and has a separate rigid reinforcing member when mounted on a passenger-side airbag-free vehicle. Even if it is not attached, a predetermined rigidity can be obtained with the instrument panel 1 alone.

Specifically, as shown in FIG. 1 (a), the instrument panel 1 includes an airbag retainer 20 (see FIG. 4) in which an airbag device 50 (see FIG. 4) is housed and held on the back surface 1a of the upper portion. A retainer welding surface 1a1 (region surrounded by a broken line in the figure) on which one surface (the flange portion 22 and the flap 23) is vibration welded is formed.
The retainer welding surface 1a1 is formed in a region between the one end side 1A and the other end side 1B of the back surface 1a of the instrument panel 1.
Further, the air bag retainer 20 is configured so as to be able to accommodate and hold the air bag device 50 (see FIG. 4), and it is sufficient that the one surface can be vibration welded to the retainer welding surface 1a1. There is no particular limitation on the general configuration. For example, the airbag retainer 20 is configured as shown in FIG.

  As shown in FIG. 4, the airbag retainer 20 extends from the frame body 21 that houses and holds the airbag device 50 and one end portion (upper end in the drawing) of the frame body 21 to the outside of the frame body 21. A flange portion 22, a flap portion 23 disposed inside one end portion of the frame body 21, and a hinge portion 24 connecting the one end portion of the frame body 21 and the base end portion of the flap portion 23.

A plurality of welding ribs 25 (see FIG. 5) are formed on one surface (flange portion 22 and flap portion 23) of the airbag retainer 20, and the one surface vibrates on the vibration welding surface 1a1 of the instrument panel 1. It is welded and attached.
And when the flange part 22 and the flap 23 of the airbag retainer 20 which accommodated and hold | maintained the airbag apparatus 50 are welded to the retainer welding surface 1a1, "the site | part in which the retainer welding surface 1a1 of the instrument panel 1 was formed" and " The flange portion 22, the flap portion 23, and the hinge portion 24 ”function as an airbag door portion that causes the expanded airbag to jump out to the passenger seat side when the airbag device 50 is activated (when the airbag is inflated). It is supposed to be.

As shown in FIG. 1, a plurality of reinforcing ribs 11 are erected on the rear surface 1a of the upper portion of the instrument panel 1 (the rear surface 1a of the instrument panel 1 including the retainer welding surface 1a1). The reinforcing rib 11 is arranged so that its longitudinal direction is substantially parallel to the “short direction of the instrument panel 1 (the longitudinal direction of the vehicle when the instrument panel 1 is mounted on the vehicle)”.
As described above, the instrument panel 1 according to the first embodiment has the plurality of reinforcing ribs 11 formed on the back surface thereof, and thus can have a predetermined rigidity even if the weight is reduced (thinned).
That is, since the instrument panel 1 of the first embodiment can be formed so as to have a predetermined rigidity with the instrument panel 1 alone, a separate rigidity reinforcing member (connection) There is no need to attach a member, a reinforcing member, etc.), and the vehicle cost can be reduced as compared with the above-described prior art.

Further, as shown in FIG. 1A, the reinforcing rib 11 is extended from one end 1A to the other end 1B of the instrument panel 1 on the back surface 1a of the instrument panel 1 (extending in the short direction of the instrument panel 1). Further, the portion 11a formed on the retainer welding surface 1a1 is erected in a state where it is inclined from the instrument panel surface.
Specifically, as shown in FIGS. 1 and 3, the reinforcing rib 11 has a portion 11 a formed on the retainer welding surface 1 a 1 with respect to the instrument panel surface (the design surface of the instrument panel (here, the retainer welding surface)). (Inclined “θ degrees” from the direction V perpendicular to the instrument panel surface).
In addition, as shown in FIGS. 1 and 2, the reinforcing rib 11 has a portion 11b formed in the region 1a2 other than the retainer welding surface 1a1 standing perpendicular to the instrument panel surface (direction V orthogonal to the instrument panel surface). Has been established.

  As described above, in the first embodiment, the reinforcing rib 11a formed on the retainer welding surface 1a1 is inclined so that the air bag retainer 20 is vibrated on the retainer welding surface 1a1 on which the reinforcing rib 11a is formed. This is to allow welding.

Specifically, as shown in FIG. 5, in the step of vibrating and welding the airbag retainer 20 to the retainer welding surface 1 a 1, the inclined reinforcing rib 11 a formed on the retainer welding surface 1 a 1 is interposed via the airbag retainer 20. It receives a load F from a vibration welding device (not shown).
Further, since the reinforcing ribs 11a formed on the retainer welding surface 1a1 are inclined in a predetermined direction, when the load F is received, the reinforcing rib 11a is bent in a predetermined direction and falls between the airbag retainer 20 and the retainer welding surface 1a1. It is supposed to be sandwiched between.
When the airbag retainer 20 is welded to the retainer welding surface 1a1 of the instrument panel 1, the reinforcing rib 11a formed on the retainer welding surface 1a1 is sandwiched between the airbag retainer 20 and the retainer welding surface 1a1. It will be in the state.
When attaching the airbag retainer 20 (and the airbag device 50) to the instrument panel 1, the instrument panel 1 is supported by the airbag retainer 20 (and the airbag device 50) even if the reinforcing rib 11 is tilted as described above. Therefore, a predetermined rigidity can be obtained.

As described above, the instrument panel 1 according to the first embodiment can be attached to the airbag retainer 20 (and the airbag apparatus 50) by vibration welding, although the reinforcing rib 11 is formed on the back surface 1a1. ing.
In addition, the instrument panel of the prior art (the instrument panel used in common with the passenger seat specification specification vehicle and the passenger seat specification specification vehicle) has a configuration in which a reinforcing rib is formed on the back surface of the airbag retainer 20 for vibration welding. Was not adopted. That is, when a reinforcing rib having a general shape is formed on the back surface of the instrument panel, vibration welding cannot be performed, and thus the configuration for forming the reinforcing rib has not been adopted.

Moreover, in 1st Embodiment, although it does not specifically limit about the shaping | molding method of the reinforcement rib 11, you may make it form the reinforcement rib 11 with the following method, for example.
Specifically, in the step of resin injection molding the instrument panel 1, the reinforcing ribs 11 of the part of the instrument panel 1 that becomes the retainer welding surface 1a1 (or the part including the peripheral part of the retainer welding surface 1a1) are "instrument panel 1". Are arranged obliquely in “the direction of molding (viewed in the direction of arrow S in FIG. 4)”.
Thereby, in the instrument panel 1 obtained by taking out from the mold by the resin injection molding, only the rib 11 formed on the retainer welding surface 1a1 is inclined with respect to the instrument panel surface (design surface of the instrument panel 1). It comes to stand in the state.

  Thus, by arranging the reinforcing ribs 11 of the retainer welding surface 1a1 of the instrument panel 1 obliquely in the “view direction of the instrument panel 1 in the molding direction”, there is no troublesome work during the injection molding process (that is, The manufacturing cost can be reduced), and the rib 11a can be formed to be inclined with respect to the instrument panel surface.

As described above, according to the first embodiment of the present invention, a lightweight instrument panel that can be used in common with a passenger-seat airbag specification vehicle and a passenger-seat airbag-free specification vehicle and that has a predetermined rigidity secured. 1 can be provided.
Further, by adopting the instrument panel 1 of the first embodiment, it is not necessary to attach a rigid reinforcing member as in the conventional technique described above, so that the vehicle cost can be reduced.

Next, an instrument panel (instrument panel) according to a second embodiment of the present invention will be described with reference to FIG.
Here, FIG. 6 is a schematic view showing the structure of the back surface of the instrument panel according to the second embodiment of the present invention, and FIG. 6A shows the instrument panel according to the second embodiment viewed from the back surface side. FIG. 6B is a schematic diagram showing an enlarged view of the reinforcing rib formed on the back surface of the instrument panel of the second embodiment.
The instrument panel 1 ′ of the second embodiment has substantially the same configuration except that the instrument panel 1 of the first embodiment has a configuration of reinforcing ribs. Therefore, in the description of the second embodiment, the same configuration as that of the first embodiment and the corresponding reference numerals are assigned, and the description thereof is omitted.

As shown in FIG. 6, in the instrument panel 1 'of the second embodiment, the retainer welding surface 1a1 is formed in the region between the one end side 1A and the other end side 1B of the back surface 1a, as in the first embodiment. Yes.
In addition, on the back surface 1a of the instrument panel 1 ', there are an inclined reinforcing rib (second reinforcing rib) 13 that is tilted when the airbag retainer 20 is welded, and a vertical reinforcing rib 12 (first reinforcing rib) that is not tilted. A plurality of them are formed independently.

Specifically, the plurality of vertical reinforcing ribs 12 are formed in the region 1a2 other than the retainer welding surface 1a1 in the back surface 1a of the instrument panel 1 ′, and the longitudinal direction thereof is “the short direction of the instrument panel 1 ′ ( The instrument panel 1 ′ is disposed substantially in parallel with the vehicle front-rear direction when the instrument panel 1 ′ is mounted on the vehicle.
Further, the plurality of inclined reinforcing ribs 13 extend across the retainer welding surface 1a1 of the back surface 1a of the instrument panel 1 ', and both end portions thereof extend to a region outside the retainer welding surface 1a1. The inclined reinforcing ribs 13 are arranged such that the longitudinal direction thereof is substantially parallel to the “short direction of the instrument panel 1 ′ (the longitudinal direction of the vehicle)”.
As described above, in the second embodiment, since “the plurality of vertical reinforcing ribs 12” and “the plurality of inclined reinforcing ribs 13” are formed on the back surface 1a1 of the instrument panel 1 ′, the instrument panel 1 of the first embodiment and Similarly, even if the weight is reduced (thinned), a predetermined rigidity can be provided.

Further, the vertical reinforcing ribs 12 are erected vertically (in the direction V perpendicular to the instrument panel surface) to the instrument panel surface, similarly to the reinforcing ribs 11b (see FIG. 2) of the first embodiment.
Further, the inclined reinforcing ribs 13 are inclined with respect to the instrument panel surface in the same manner as the reinforcing ribs 11a (see FIG. 3) of the first embodiment ("θ degrees from the direction V perpendicular to the instrument panel surface"). "Inclined and standing).

As in the first embodiment, the inclined reinforcing rib 13 is bent in a predetermined direction due to a load F (see FIG. 5) received during vibration welding, and the upper surface of the airbag retainer 20 and the retainer welding surface 1a1. It is designed to be accommodated in between.
As described above, the instrument panel 1 ′ of the second embodiment also employs a configuration in which reinforcing ribs (vertical reinforcing ribs 12 and inclined reinforcing ribs 13) are formed on the back surface 1a1 as in the instrument panel 1 of the first embodiment. Nevertheless, the airbag retainer 20 can be attached to the retainer welding surface 1a1.

Further, as shown in FIG. 6, in the region where the retainer welding surface 1a1 of the instrument panel 1 ′ is formed, the vertical reinforcing ribs 12 and the inclined reinforcing ribs 13 are arranged in the longitudinal direction of the instrument panel 1 ′ (the vehicle in which the instrument panel 1 ′ is mounted). In the vehicle width direction).
Specifically, the vertical reinforcing ribs 12 are regions 1a2 other than the retainer welding surface 1a1 of the instrument panel 1 'and on both sides of the retainer welding surface 1a1 (one end side 1A and the other end side 1B of the instrument panel 1'). A plurality are arranged.
The inclined reinforcing rib 13 is arranged so that the side surface of one end thereof is opposite to the “side surface of the adjacent vertical reinforcing rib 12 formed on the one end side 1A of the instrument panel 1 ′”, and the side surface of the other end portion is It arrange | positions so that it may oppose with "the side surface of the adjacent vertical reinforcement rib 12 formed in the other end side 1B of the instrument panel 1 '."

By configuring the vertical reinforcing ribs 12 and the inclined reinforcing ribs 13 as described above, the adjacent vertical reinforcing ribs 12 and the inclined reinforcing ribs 13 overlap along the short side direction of the instrument panel 1 '(the vehicle longitudinal direction). A wrap t (see FIG. 6B) is formed.
Thus, by forming the wrap t, the rigidity of the instrument panel 1 ′ can be ensured even if the vertical reinforcing rib 12 and the inclined reinforcing rib 13 are separated along the short direction of the instrument panel 1 ′. .
The size of the wrap t is not particularly limited, but is preferably about “10 mm to 50 mm”, for example.

As described above, in the second embodiment as well as in the first embodiment, the vehicle can be used in common with a passenger-seat airbag specification vehicle and a passenger-seat airbag-free specification vehicle, and a predetermined rigidity is ensured. A lightweight instrument panel 1 'can be provided.
Further, by adopting the instrument panel 1 ′ of the second embodiment, it is not necessary to attach a rigid reinforcing member as in the above-described prior art, so that the vehicle cost can be reduced.

Further, the instrument panel 1 ′ of the second embodiment has the inclined reinforcing ribs 13 and the vertical reinforcing ribs 12 formed independently of each other. Therefore, in the step of vibration welding the airbag retainer 20 to the retainer welding surface 1a1, Compared with the reinforcing rib 11 of the instrument panel 1 of the embodiment, the inclined reinforcing rib 13 can be easily tilted.
In addition, this invention is not limited to embodiment mentioned above (1st Embodiment, 2nd Embodiment), A various deformation | transformation is possible within the range of the summary.

  For example, the direction and quantity of the reinforcing ribs (the reinforcing rib 11, the vertical reinforcing rib 12, and the inclined reinforcing rib 13) shown in the above-described embodiments (the first embodiment and the second embodiment) are merely examples. The direction and quantity of the reinforcing ribs (reinforcing ribs 11, vertical reinforcing ribs 12, and inclined reinforcing ribs 13) are appropriately designed according to the size and shape of the instrument panel 1 (or instrument panel 1 ').

1 instrument panel 1 'instrument panel 1a back (instrument panel)
1a1 Retainer welding surface (instrument panel)
1a2 Area other than retainer welding surface (instrument panel)
11, 11a, 11b Reinforcement rib (instrument panel)
12 Vertical reinforcing rib (instrument panel)
13 Inclined reinforcement rib (instrument panel)
20 Airbag retainer 21 Frame (Airbag retainer)
22 Flange (Airbag Retainer)
23 Flap part (Airbag retainer)
24 Hinge (Airbag Retainer)
25 Welding rib (Airbag retainer)
50 Airbag device

Claims (5)

An instrument panel that is used in common with passenger-side airbag specification vehicles and passenger-side airbag-less specification vehicles,
On the back surface of the instrument panel, a retainer welding surface is formed for vibration welding of an airbag retainer that houses and holds an airbag device.
A plurality of reinforcing ribs are formed on the back surface of the instrument panel including the retainer welding surface,
The instrument panel according to claim 1, wherein the reinforcing rib formed on the retainer welding surface is inclined with respect to the retainer welding surface.   The reinforcing rib formed on the retainer welding surface is tilted in a certain direction and sandwiched between the airbag retainer and the retainer welding surface in the step of vibration welding the airbag retainer to the retainer welding surface. The instrument panel according to claim 1, wherein the instrument panel is configured as follows.   The reinforcing rib formed on the retainer welding surface is formed by being arranged obliquely in the molding direction view of the instrument panel in the injection molding process. Instrument panel as described. An instrument panel that is used in common with passenger-side airbag specification vehicles and passenger-side airbag-less specification vehicles,
On the back surface of the instrument panel, there is formed a retainer welding surface on which an airbag retainer that accommodates and holds the airbag device is vibration welded.
A plurality of first reinforcing ribs and a plurality of second reinforcing ribs are formed on the back surface of the instrument panel,
The first reinforcing rib is formed in a region other than the retainer welding surface on the back surface of the instrument panel,
The instrument panel according to claim 1, wherein the second reinforcing rib is formed at least on the retainer welding surface and is inclined and standing with respect to the retainer welding surface. The first reinforcing ribs and the second reinforcing ribs are alternately formed along a vehicle width direction of a vehicle on which the instrument panel is mounted,
The second reinforcing rib extends across the retainer welding surface, and both end portions thereof extend to a region outside the retainer welding surface, and both end portions thereof are formed adjacent to each other. The instrument panel according to claim 4, wherein the instrument panel faces one reinforcing rib.

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