JP4591278B2 - Vehicle ceiling structure - Google Patents

Description

  The present invention relates to a vehicle ceiling structure in which a molded ceiling is reinforced.

  In the vehicle ceiling structure, the molded ceiling may be reinforced in order to increase the rigidity of the molded ceiling. In such reinforcement of the molded ceiling, a reinforcing plate-like member is disposed on the back side of the molded ceiling (see, for example, Patent Document 1).

Here, when the airbag is disposed on the back side of the molded ceiling, the conventional vehicle ceiling structure sufficiently reinforces the rigidity of the molded ceiling when the molded ceiling is attached to the vehicle ceiling, while the airbag is in operation. Difficult to allow airbag deployment.
JP 2001-287616 A

  In consideration of the above facts, the present invention provides a vehicle ceiling structure that can deploy an airbag when the airbag is activated while sufficiently reinforcing the rigidity of the molded ceiling when the molded ceiling is attached to the vehicle ceiling. The issue is to provide.

According to a first aspect of the present invention, there is provided a vehicle ceiling structure according to the present invention, the molded ceiling disposed on the vehicle interior side of the vehicle ceiling portion and the rear side of the molded ceiling, and pressing the molded ceiling toward the vehicle interior. An air bag that can be deployed, and is attached to the back side of the molded ceiling and extends in the vehicle width direction on both sides in the vehicle width direction, and supports a load that acts upward through the molded ceiling to support the molded ceiling. deformation is suppressed, and the supporting force for the formed ceiling in a state of receiving a downward load is smaller than the supporting force for the formed ceiling in a state of receiving the upward load, when the action of the downward load in the deployed state of the airbag and having a reinforcing means for deformation downward side with prior Symbol molded ceiling.

According to the vehicle ceiling structure of the present invention described in claim 1, the reinforcing means arranged extending in the vehicle width direction on both sides in the vehicle width direction has an upward load that tends to be bent on the molded ceiling during the mounting operation. If applied, to suppress the deformation of the formed ceiling to support the load acting upward through the molded ceiling. In addition, the reinforcing means has a lower supporting force for the molded ceiling in the state of receiving the downward load than that for the molded ceiling in the state of receiving the upward load, and together with the molded ceiling when the downward load is applied in the deployed state of the airbag. Deforms downward . In other words, when the airbag is deployed, deformation to the lower side of the molded ceiling is allowed.

  A vehicle ceiling structure according to a second aspect of the present invention is the vehicle ceiling structure according to the first aspect, wherein the reinforcing means includes a plurality of divided portions that are divided at least at the upper side and are arranged in the vehicle width direction, and acting upward. In the received state, the space between the divided parts is closed, and in the deployed state of the airbag, the gap between the divided parts is displaced downward while being displaced.

  According to the vehicle ceiling structure of the present invention described in claim 2, when an upward load is applied to the molded ceiling, the divided portions of the reinforcing means are pressed against each other to close the space between the divided portions, and the load acts upward. To suppress deformation of the molded ceiling. When the airbag is deployed, a downward load acts to push the gap between the divided portions, and the reinforcing means is displaced downward.

The vehicle ceiling structure according to a third aspect of the present invention is the vehicle ceiling structure according to the first aspect, wherein the reinforcing means is attached to the molded ceiling on both sides in the vehicle width direction of the reinforcing means, and is perpendicular to the vehicle width direction. It is a flexible long plate-like body that is curved so that its cross section swells upward, and is bent and displaced downward when the airbag is deployed.

  According to the vehicle ceiling structure of the present invention described in claim 3, when an upward load acts on the molded ceiling, the long plate-like body as the reinforcing means supports the load acting upward via the molded ceiling. To suppress deformation of the molded ceiling. When the airbag is deployed, a downward load acts and the long plate-like body is bent and displaced downward.

  As described above, according to the vehicle ceiling structure of the present invention, the airbag can be deployed when the airbag is activated while sufficiently reinforcing the rigidity of the molded ceiling when the molded ceiling is attached to the vehicle ceiling. It has an excellent effect of being able to.

A vehicle ceiling structure according to a first embodiment of the present invention will be described with reference to the drawings. In the figure, arrow UP indicates the upward direction of the vehicle, arrow FR indicates the forward direction of the vehicle, and arrow W indicates the vehicle width direction.
(Configuration of the first embodiment)
FIG. 1 is a plan view of the molded ceiling 12 of the vehicle ceiling structure 10 as viewed from the back side, that is, from above. The molded ceiling 12 is a ceiling lining composed of a skin, a pad material, and a base material, and is integrally formed. As shown in FIG. 2, the molded ceiling 12 is disposed inside the vehicle room 100 of the roof panel 14 in the vehicle ceiling portion 11. The The formed ceiling 12 substantially corresponds to the shape of the roof panel 14 and is curved in a curved shape toward the outside in the vehicle width direction (arrow W direction).

  On the outer side of the roof panel 14 in the vehicle width direction (arrow W direction), a roof side panel 15A is welded at both ends to form a roof side member 15 having a closed cross-sectional structure. It is a load support part. A trim 19 is attached to the lower side of the roof side member 15, and the trim 19 supports a terminal portion in the width direction of the molded ceiling 12.

  As shown in FIG. 1, a sun visor accommodating portion 18 is formed in the front portion of the molded ceiling 12 in the vehicle, and a bracket 16 </ b> A of the sun visor 16 and a sun visor holder 17 are attached in the sun visor accommodating portion 18. An overhead console 20 is attached between the pair of sun visor accommodating portions 18. An electrical component 22 is attached to the rear side of the molded ceiling 12 near the vehicle, and an assist grip 24 is inserted into a side edge of the molded ceiling 12 and attached to the roof side panel 15A (see FIG. 2). .

  On the back side (upper side) of the molded ceiling 12, airbags 28 of the airbag device 26 are arranged on both sides in the vehicle width direction (arrow W direction). The airbag device 26 including the airbag 28 is attached to the roof side panel 15A shown in FIG. 2 by attachment means (not shown). The airbag device 26 detects a collision by a collision sensor (not shown), and operates according to a control signal for operating the airbag device 26. The airbag 28 presses the molded ceiling 12 and is It can be expanded into 100.

  As shown in FIG. 1, on the back side of the molded ceiling 12, reinforcing block groups 30 as reinforcing means are arranged on both sides in the vehicle width direction (arrow W direction) slightly forward of the center in the vehicle front-rear direction. The

  Here, since many members such as the overhead console 20 are attached to the front portion of the vehicle on the molded ceiling 12, a load acts in a direction in which the vehicle width direction (arrow W direction) is bent with a broken line (illustrated by a two-dot chain line 12L). It is in a state to do. In addition, as described above, the molded ceiling 12 is curvedly lowered as both sides in the vehicle width direction (arrow W direction) go outward, and therefore, on both sides in the vehicle width direction (arrow W direction) due to the load in the bending direction. An upward load is applied. For this reason, in the molded ceiling 12, the reinforcing block groups 30 for the upward load are arranged on both sides in the vehicle width direction (arrow W direction) in the range where the load in the bending direction acts.

  The reinforcing block group 30 includes reinforcing block members 32 as a plurality of divided portions fixed to the molded ceiling 12, and these reinforcing block members 32 are adjacent to each other in the vehicle width direction (arrow W direction). As shown in FIG. 2, the reinforcing block group 30 is formed by supporting the load acting upward by closing the space between the reinforcing block members 32 when receiving the load acting upward via the molding ceiling 12. In the deployed state of the airbag 28, that is, in a state where a load acting downward by the deployment of the airbag 28 is received, the reinforcing block member is shown as indicated by a two-dot chain line. The gap between 32 is pushed wide, and the reinforcing block member 32 is displaced downward.

  In such a configuration, the supporting force of the reinforcing block group 30 with respect to the molded ceiling 12 in the downward load state is smaller than the supporting force of the reinforcing block group 30 with respect to the molded ceiling 12 in the upward load state. 12 is allowed to deform downward.

In this embodiment, an elastic material such as urethane is applied as the material of the reinforcing block member 32, and thus the reinforcing block member 32 also has a function of absorbing energy of the molded ceiling 12. Since the reinforcing block member 32 is made of an elastic material, a sufficient thickness is required for sufficient reinforcement. The thickness of the reinforcing block member 32 is substantially equal to the distance between the molded ceiling 12 and the roof panel 14, so that the so-called blinking of the molded ceiling 12 is filled by filling the gap between the molded ceiling 12 and the roof panel 14. It is preventing.
(Operation of the first embodiment)
Next, the operation of the above embodiment will be described.

  As shown in FIG. 1, a load acts on the molded ceiling 12 in a direction in which the vehicle width direction (arrow W direction) is bent along a broken line (shown by a two-dot chain line 12L) due to the weight of the overhead console 20 or the like. Here, the molded ceiling 12 is bent in a curved shape as both sides in the vehicle width direction (arrow W direction) go outward, so an upward load on both sides in the vehicle width direction (arrow W direction) due to the load in the bending direction. Works.

  In this state, as shown in FIG. 2, the reinforcement block group 30 receives an upward load on the molded ceiling 12 through the molded ceiling 12, and the reinforcement block members 32 are pressed against each other, thereby reinforcing the block member 32. The space is closed, thereby supporting the load acting upward through the molded ceiling 12 and suppressing the deformation of the molded ceiling 12.

  On the other hand, when the airbag 28 is deployed, the airbag 28 presses the molded ceiling 12 and the reinforcing block group 30 downward. At this time, the gap between the reinforcing block members 32 is expanded, the reinforcing block group 30 is displaced downward together with the molded ceiling 12, and the molded ceiling 12 is deformed in the direction of drooping (direction of arrow A). 28 is deployed toward the passenger compartment 100.

As described above, according to the vehicle ceiling structure 10 of the present embodiment, the airbag 28 is provided with the airbag 28 when the airbag is activated while sufficiently reinforcing the rigidity of the molded ceiling 12 when the molded ceiling 12 is attached to the vehicle ceiling 11. Can be deployed.
(Second Embodiment)
Next, a second embodiment of the vehicle ceiling structure will be described with reference to FIG. Note that the second embodiment is characterized in that the reinforcing block member 32 is connected by the paper material 34, and the other components are substantially the same as those in the first embodiment, and thus the same reference numerals are used. A description thereof will be omitted.

  As shown in FIG. 3, the reinforcing block member 32 is a rectangular parallelepiped. A paper material 34 for connecting the reinforcing block members 32 is bonded to the bottom surface of the reinforcing block member 32. When the reinforcing block group 30 is attached to the back surface of the molded ceiling 12 (see FIG. 2), the paper material 34 is fixed to the back surface of the molded ceiling 12.

As described above, by integrating the reinforcing block member 32 with the paper material 34 in advance, the workability of attaching the reinforcing block group 30 to the molded ceiling 12 (see FIG. 2) is improved.
(Third embodiment)
Next, a third embodiment of the vehicle ceiling structure will be described with reference to FIG. Note that the third embodiment is characterized in that a reinforcing plate group 36 is disposed as a reinforcing means, and the other configurations are substantially the same as those in the first embodiment, and thus the same reference numerals are given. The description is omitted.

  In substantially the same position as the arrangement position of the reinforcing block group 30 shown in FIG. 1 (both sides in the vehicle width direction (arrow W direction) on the back side of the molded ceiling 12 slightly forward from the center portion in the vehicle front-rear direction) A reinforcing plate group 36 shown in FIG. 4 is arranged.

  As shown in FIG. 4, the reinforcing plate group 36 includes reinforcing plates 38 as a plurality of divided portions fixed to the molded ceiling 12, and these reinforcing plates 38 are arranged in the vehicle width direction (arrow W direction). And are arranged up to the lower side of the airbag 28. In a state where the reinforcing plate group 36 receives a load acting upward through the molded ceiling 12, the space between the reinforcing plates 38 is closed, and the upward acting load is supported to suppress deformation of the molded ceiling 12. In the deployed state of the airbag 28, that is, in a state where a load acting downward by the deployment of the airbag 28 is received, the gap between the reinforcing plates 38 is pushed and expanded as shown by the two-dot chain line. The plate 38 is displaced downward.

  In such a configuration, the supporting force of the reinforcing plate group 36 with respect to the molded ceiling 12 in the downward load state is smaller than the supporting force of the reinforcing plate group 36 with respect to the molded ceiling 12 in the upward load state. 12 is allowed to deform downward.

As a material of the reinforcing plate 38, a resin material or a metal material can be applied. Since the rigidity of the material itself is high, the thickness of the reinforcing plate 38 can be reduced, so that the reinforcing plate 38 can also be disposed below the airbag 28.
(Fourth embodiment)
Next, a fourth embodiment of the vehicle ceiling structure will be described with reference to FIG. Note that the fourth embodiment is characterized in that the reinforcing plate 38 is connected by the paper material 35, and the other components are substantially the same as those in the third embodiment, and thus are denoted by the same reference numerals. Therefore, the description is omitted.

  As shown in FIG. 5, the reinforcing plate 38 has a thin plate shape and has a stepped shape in which the intermediate portion 38 </ b> A is raised as compared with the side portions 38 </ b> B. The bottom surface of the intermediate portion 38A is higher than the bottom surfaces of both side portions 38B. A paper material 35 for bonding the reinforcing plates 38 is bonded to the bottom surfaces of the both side portions 38B. When attaching the reinforcing plate group 36 to the back surface of the molded ceiling 12 (see FIG. 4), the paper material 35 is fixed to the back surface of the molded ceiling 12.

Thus, by integrating the reinforcing plate 38 with the paper material 35 in advance, the workability of attaching the reinforcing plate group 36 to the molded ceiling 12 (see FIG. 2) is improved.
(Fifth embodiment)
Next, a fifth embodiment of the vehicle ceiling structure will be described with reference to FIGS. The fifth embodiment is characterized in that an arch-shaped flexible member 40 is disposed as a reinforcing means, and the other components are substantially the same as those in the first embodiment, so that the same reference numerals are used. The description is omitted.

  In substantially the same position as the arrangement position of the reinforcing block group 30 shown in FIG. 1 (both sides in the vehicle width direction (arrow W direction) on the back side of the molded ceiling 12 slightly forward from the center portion in the vehicle front-rear direction) The arcuate flexible member 40 shown in FIGS. 6 and 7 is arranged.

  The arch-shaped flexible member 40 is disposed so as to extend in the vehicle width direction (arrow W direction), and is curved so that a right-angle cross section in the vehicle width direction (arrow W direction) swells upward as shown in FIG. It is a flexible long plate-like body. Side end portions 40 </ b> A on both sides in the vehicle width direction (arrow W direction) of the arch-shaped flexible member 40 are fixed to the mounting seat 42. As shown in FIG. 6, the bottoms of the mounting seats 42 on both sides are fixed to the molded ceiling 12, so that both sides of the arched flexible member 40 in the vehicle width direction (arrow W direction) are attached. It is attached to the molded ceiling 12 via a seat 42.

  The arched flexible member 40 supports the load acting upward and suppresses deformation of the molded ceiling 12 in a state where the upward acting load is received via the molded ceiling 12. On the other hand, in the deployed state of the airbag 28, that is, in a state where a load acting downward is applied by the deployment of the airbag 28, as indicated by a two-dot chain line, the vehicle width direction of the arch-shaped flexible member 40 (arrow W The middle part of the direction is bent while being crushed and displaced downward.

In such a configuration, the support force of the arched flexible member 40 with respect to the molded ceiling 12 in the downward load state is smaller than the support force of the arched flexible member 40 with respect to the molded ceiling 12 in the upward load state. In the unfolded state, the molding ceiling 12 is allowed to deform downward.
(Sixth embodiment)
Next, a sixth embodiment of the vehicle ceiling structure will be described with reference to FIG. Note that the sixth embodiment is not an embodiment of the present invention but a disclosure example. The sixth embodiment is characterized in that the arched flexible member 40 as the reinforcing means is attached to the molded ceiling 12 only at the portion near the center in the vehicle width direction (arrow W direction). Since the configuration is substantially the same as that of the fifth embodiment, the same reference numerals are given and description thereof is omitted.

  As shown in FIG. 8, the arched flexible member 40 is arranged extending in the vehicle width direction (arrow W direction), and the side end portions 40 </ b> A on both sides are fixed to the mounting seat 42. Here, in the mounting seat 42, only one mounting seat (42A) (left side in FIG. 8) that is closer to the center in the vehicle width direction (arrow W direction) is fixed to the molded ceiling 12, and the vehicle width The other (right side in FIG. 8) mounting seat (42B) that is closer to the outer portion in the direction (arrow W direction) is not fixed to the molded ceiling 12 and is in a free state.

  The arched flexible member 40 supports the load acting upward and suppresses deformation of the molded ceiling 12 in a state where the upward acting load is received via the molded ceiling 12. On the other hand, in the deployed state of the airbag 28, the deformation of the molded ceiling 12 is not hindered and the downward deformation of the molded ceiling 12 is allowed. For this reason, when the airbag 28 is deployed, the molded ceiling 12 is sequentially separated from the arched flexible member 40 from the outer side in the vehicle width direction (arrow W direction) and deformed downward.

In the first to fifth embodiments, the reinforcing block group 30, the reinforcing plate group 36, and the arched flexible member 40 are used as reinforcing means, but the reinforcing means is not limited to these. As long as the technical idea of the present invention is not departed from, the reinforcing means can have various structures.

  Moreover, in the said 1st, 2nd embodiment, the reinforcement block group 30 as a reinforcement means is comprised by the reinforcement block member 32 divided | segmented completely, In the said 3rd, 4th embodiment, as a reinforcement means The reinforcing plate group 36 is composed of a completely divided reinforcing plate 38. However, the reinforcing means is divided only in the upper side of the reinforcing means (a cut is formed) and arranged in the vehicle width direction (arrow W direction). Other reinforcing means such as including a plurality of divided portions may be used.

It is a top view which shows the state which looked at the molded ceiling of the vehicle ceiling structure which concerns on 1st Embodiment of this invention from the back side. 1 is a longitudinal sectional view showing a vehicle ceiling structure according to a first embodiment of the present invention. It is a perspective view which shows the reinforcement block group and paper material in 2nd Embodiment of this invention. It is a longitudinal cross-sectional view which shows the vehicle ceiling structure which concerns on 3rd Embodiment of this invention. It is a perspective view which shows the reinforcement board group and paper material in 4th Embodiment of this invention. It is a longitudinal cross-sectional view which shows the vehicle ceiling structure which concerns on 5th Embodiment of this invention. It is a perspective view which shows the arch-shaped flexible member and attachment seat in 5th Embodiment of this invention. It is a longitudinal cross-sectional view which shows the vehicle ceiling structure which concerns on 6th Embodiment which is a disclosed example .

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle ceiling structure 11 Vehicle ceiling part 12 Molded ceiling 28 Air bag 30 Reinforcement block group (reinforcement means)
32 Reinforcement block member (divided part)
36 Reinforcing plate group (reinforcing means)
38 Reinforcement plate (divided part)
40 Arch-shaped flexible member (long plate-shaped body (reinforcing means))
100 compartment W width direction

Claims (3)

A molded ceiling disposed on the vehicle interior side of the vehicle ceiling,
An airbag that is disposed on the back side of the molded ceiling and that can be deployed toward the vehicle interior by pressing the molded ceiling;
Together with the attached to the back side of the molded ceiling is disposed to extend in the vehicle width direction on both sides in the vehicle width direction, to suppress the deformation of the formed ceiling to support the load acting upward through the formed ceiling, downwardly lower support force for said molded ceiling state under load is smaller than the supporting force for the formed ceiling in a state of receiving the upward load, with prior SL formed ceiling during the action of downward load in the deployed state of the airbag and reinforcing means to change shape to the side,
A vehicle ceiling structure characterized by comprising:   The reinforcing means includes a plurality of divided portions that are divided at least on the upper side and are arranged in the vehicle width direction, and the divided portions are closed in a state where a load acting upward is received, and the divided portion is in a deployed state of the airbag. 2. The vehicle ceiling structure according to claim 1, wherein a gap between the parts is displaced downward while being widened. The reinforcing means is a flexible long plate-like body that is curved so that both sides of the reinforcing means in the vehicle width direction are attached to the molded ceiling and a right-angle cross section in the vehicle width direction swells upward, The vehicle ceiling structure according to claim 1, wherein the vehicle ceiling structure is bent and displaced downward when the airbag is deployed.

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