JP7189497B2 - Vehicle upper interior structure - Google Patents

Description

The present invention is an upper interior of a vehicle comprising a pillar trim that is attached to a pillar that defines an opening of a vehicle and covers the pillar from the passenger compartment side, and a top ceiling that is provided above the pillar trim and covers the ceiling of the passenger compartment. Regarding structure.

Conventionally, a vehicle is equipped with, as interior members, a top ceiling that covers the ceiling of the vehicle and a pillar trim that covers the pillar that defines the opening of the vehicle from the vehicle interior side. Vehicles are sometimes further equipped with an airbag device for protecting passengers in the event of a vehicle collision or the like.

For example, in Patent Document 1, a pillar trim (B pillar garnish) and a top ceiling (roof headlining) are installed, and a so-called airbag device is stored above the top ceiling in the event of a vehicle collision or the like. A vehicle equipped with a device including a curtain airbag that deploys downward from a folded state to cover a side wall of the vehicle is disclosed.

In the vehicle disclosed in Patent Document 1, the upper end of the pillar trim and the both ends of the top ceiling in the vehicle width direction both have a shape extending in the vertical direction. Both ends of the top ceiling in the vehicle width direction are inserted between the pillar trim and the pillar so as to face the surface of the pillar trim on the outside of the vehicle. By restricting movement, the top sealing is held by the pillar trim. In addition, in the vehicle disclosed in Patent Document 1, the end portion of the top ceiling in the vehicle width direction is pressed inward in the vehicle width direction while the curtain airbag is being deployed downward. A curtain airbag is deployed into the vehicle interior through a gap between the ceiling and the pillar trim.

JP 2014-15087 A

In the structure of Patent Document 1, the top sealing is held only by the pillar trim. Therefore, if there is an installation error between the pillar trim and the vehicle body, the relative positions of the pillar trim and the top ceiling may deviate from an appropriate position, and the pillar trim may not be able to maintain the top ceiling in an optimal state. Therefore, it is necessary to attach the pillar trim to the vehicle body so as not to cause an attachment error, and the attachment work takes time. In addition, in the structure of Patent Document 1, in order to separate the top ceiling from the pillar trim, the curtain airbag that deploys downward presses the top ceiling inward in the vehicle width direction, that is, in a direction different from the deployment direction of the curtain airbag. must be given. As a result, the load is not effectively applied from the curtain airbag to the top ceiling, and the deployment force of the curtain airbag must be increased.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an upper interior structure for a vehicle that enhances the workability of the mounting work and allows the curtain airbag to deploy more easily. aim.

In order to solve the above problems, the present invention provides a pillar trim that is attached to a pillar that defines an opening of a vehicle and covers the pillar from the passenger compartment side, and a pillar trim that is provided above the pillar trim and covers the ceiling of the passenger compartment. a vehicle upper interior structure comprising a top ceiling, wherein an airbag device including a curtain airbag that is housed above the top ceiling and deploys to cover a side wall of a vehicle compartment; and an airbag device provided above the top ceiling. a bracket for holding the top ceiling, the top ceiling having an extension portion extending substantially horizontally at an end portion thereof in the vehicle width direction; and the bracket being the outer end of the extension portion in the vehicle width direction. and the upper edge of the pillar trim. The bracket is allowed to move relative to the pillar along the side surface of the pillar on the passenger compartment side. ( Claim 1).

According to the present invention, since the bracket is provided and the top sealing is sandwiched between the bracket and the upper edge of the pillar trim, the top sealing is deviated from the optimum position with respect to the pillar trim. Even in such a case, the top sealing can be properly maintained by appropriately maintaining the relative positions of the bracket and the pillar trim. Therefore, it is possible to shorten the time required for attaching the pillar trim to the vehicle body, thereby improving the workability.

In addition, the outer end of the substantially horizontally extending portion of the top sealing is held between the holding portion of the bracket and the upper edge of the pillar trim. , force can be applied from the curtain airbag to the extending portion in a direction perpendicular to the extending portion or in a direction close thereto. Therefore, it is possible to effectively apply a load from the curtain airbag to the extending portion and easily remove it from between the bracket and the pillar trim. Therefore, the curtain airbag can be easily deployed along the side wall of the vehicle compartment without increasing the deployment force of the curtain airbag.

In the above configuration, preferably, the curtain airbag is housed at a position above an inner portion of the extending portion in the vehicle width direction and inward of the pillar trim in the vehicle width direction (Claim 2).

According to this configuration, when the curtain airbag is deployed, a force can be more reliably applied from the curtain airbag to the extending portion of the top ceiling in a direction orthogonal to or in a direction close thereto, and the top ceiling can be secured. You can more reliably get out early. Moreover, interference between the curtain airbag and the pillar trim can be suppressed, and the curtain airbag can be smoothly deployed.

In the above configuration, preferably, the curtain airbag is housed at a position spaced upward from the extending portion (Claim 3).

According to this configuration, the curtain airbag can be vigorously collided with the extension, and the extension can be more easily separated from between the bracket and the pillar trim.

In the above configuration, preferably, the airbag device includes an inflator having a gas supply unit connected to the curtain airbag and supplying gas from the gas supply unit to the curtain airbag, wherein the inflator comprises: The gas supply portion is arranged at a position substantially corresponding to the end portion of the bracket in the front-rear direction (claim 4).

According to this configuration, gas is supplied first to the portion of the curtain airbag that faces the bracket, so that the deployment force of the curtain airbag in this portion can be increased. As a result, the top sealing can be quickly removed from between the bracket and the pillar trim while the gas supply force of the inflator is kept low, so that the curtain airbag can be quickly deployed along the side wall of the vehicle compartment.

In the above configuration, preferably, the pillar trim is provided with a positioning portion for locking the bracket (claim 5).

INDUSTRIAL APPLICABILITY As described above, the present invention can provide an upper interior structure for a vehicle that can improve workability and promote deployment of the curtain airbag.

1 is a schematic side view of a side portion of a vehicle according to an embodiment of the present invention, viewed from the cabin side; FIG. FIG. 2 is a schematic cross-sectional view taken along the line II-II of FIG. 1; FIG. 4 is a schematic view of the vicinity of the B-pillar with the top ceiling removed, viewed from the passenger compartment side; FIG. 4 is a diagram showing a state in which a pillar trim is removed from the state shown in FIG. 3; FIG. 4 is a schematic perspective view for explaining the mounting structure of the bracket and the pillar inner panel, viewed from the outside of the vehicle; FIG. 4 is a schematic perspective view for explaining the mounting structure of the bracket and the pillar trim as seen from the outside of the vehicle; It is the schematic perspective view which looked at the bracket from the compartment side. It is the schematic perspective view which looked at the bracket from the vehicle outer side. FIG. 8 is a schematic cross-sectional view along the line IX-IX in FIG. 7; FIG. 4 is a view showing the state of the curtain airbag when it is deployed, in which (a) is a view before the top sealing is released, and (b) is a view after the top sealing is released. It is the schematic which looked at the C-pillar periphery from the passenger compartment side. FIG. 12 is a schematic cross-sectional view along the line XII-XII of FIG. 11; It is a schematic perspective view showing a bracket according to a second embodiment. FIG. 14 is a schematic cross-sectional view taken along the line XIV-XIV in FIG. 13; It is a schematic perspective view showing a bracket according to a third embodiment. FIG. 16 is a schematic cross-sectional view along a plane passing through line XVI-XVI of FIG. 15;

An embodiment of the present invention will be described in detail based on the drawings. In the following, as shown in FIG. 1, a case where the vehicle upper interior structure of the present invention is applied to a two-seat vehicle 1 having first-row seats 1a and second-row seats 1b will be described.

FIG. 1 is a schematic side view of a side portion of a vehicle 1 as seen from the cabin side. FIG. 2 is a schematic cross-sectional view taken along line II-II of FIG. In the following description, the front-rear direction of the vehicle is simply referred to as the front-rear direction. In each figure, "inside" represents the inside (inner side) in the vehicle width direction, that is, the vehicle compartment side, and "outside" represents the outside (outside) in the vehicle width direction, that is, the outside of the vehicle.

As shown in FIG. 1, a side portion of a vehicle 1 is formed with an opening 1c for raising and lowering a passenger for a first row seat 1a and an opening 1d for raising and lowering a passenger for a second row seat 1b. there is A side door (not shown) is attached to each of these openings 1c and 1d. The vehicle 1 has an A pillar 2, a B pillar 3, and a C pillar 4 in order from the front as pillars that partition the openings 1c and 1d. The vehicle 1 also has a roof panel 5 that forms the outer surface of the ceiling portion of the passenger compartment. Each pillar 2, 3, 4 is provided on each side of the vehicle 1 in the vehicle width direction. Each pillar and its peripheral structure are symmetrical in the vehicle width direction.

As shown in FIGS. 1 and 2, a vehicle 1 includes, as vehicle interior members, a top ceiling 6 that covers a roof panel 5 from below and covers the ceiling of the passenger compartment, and pillars 2, 3, and 4 that are installed from the passenger compartment side. and covering pillar trims 20,30,40.

The top sealing 6 is made of a soft material and can be deformed relatively easily. The top sealing 6 is formed of, for example, urethane foam whose surface is covered with a non-woven fabric. The pillar trims 20, 30, 40 are made of hard synthetic resin (eg, polypropylene) and are not easily plastically deformed.

The top sealing 6 has a main body portion 6b formed in an upwardly convex arcuate shape in a vertical cross section, and an extending portion 6a extending substantially horizontally from the end portion of the main body portion 6b in the vehicle width direction. In other words, extending portions 6a extending substantially horizontally are provided at both outer end portions of the top ceiling 6 in the vehicle width direction. The extending portion 6a is configured to form an angle of 0 degrees or more and 20 degrees or less with respect to the horizontal plane. That is, the term "substantially horizontal" as used herein means that the angle formed with the horizontal plane is 0 degrees or more and 20 degrees or less.

The vehicle 1 has a bracket for holding the top ceiling 6 as an interior member of the vehicle. In this embodiment, the vehicle 1 has a B bracket 50 provided at the upper end of the B pillar 3 as a bracket.

The vehicle 1 further has an airbag device 70 . The airbag device 70 is a device for protecting an occupant in the event of a vehicle collision. The airbag device 70 includes a bag-like curtain airbag 71 and an inflator 72 that supplies inflation gas to the curtain airbag 71 . The curtain airbag 71 corresponds to the "curtain airbag" in the claims.

The curtain airbag 71 is stored in a folded state above the top ceiling 6, that is, in a space above the top ceiling. The curtain airbag 71 has a length extending from the A-pillar 2 to the C-pillar 4 and extends from the upper end of the A-pillar 2 through the upper end of the B-pillar 3 to the upper end of the C-pillar 4 .

The inflator 72 is actuated when a side collision sensor (not shown), such as a lateral G sensor, detects a side collision of the vehicle, and instantaneously supplies inflation gas to the curtain airbag 71 . The curtain airbag 71 is inflated by receiving the supply of this inflation gas, and deploys below the top ceiling 6, that is, in the vehicle interior. The curtain airbag 71 is deployed so as to cover the side wall of the vehicle compartment including the inner surface of the side door, etc., and prevents the driver from colliding with the side wall of the vehicle compartment.

The structure around the pillar will be explained. In the following, a case where the claimed pillar is the B pillar 3 will be described, and the structure around the B pillar 3 will be described. Hereinafter, the outer side in the vehicle width direction is referred to as the vehicle outer side, and the inner side in the vehicle width direction is referred to as the vehicle interior side.

FIG. 3 is a schematic diagram of the vicinity of the upper end portion of the B-pillar 3 as viewed from the passenger compartment side. FIG. 3 shows a state in which the top sealing 6 is removed. FIG. 4 shows a state in which the pillar trim 30 and the curtain airbag 71 are removed from the state shown in FIG. FIG. 5 is a diagram for explaining the attachment structure between the B-pillar 3 and the bracket 50, and is a schematic view of these from the vehicle compartment side. FIG. 6 is a diagram for explaining the mounting structure of the bracket 50 and the pillar trim 30, and is a schematic view of these from the outside of the vehicle.

As shown in FIG. 2, the B pillar 3 has a pillar outer panel 3a arranged on the outside of the vehicle and a pillar inner panel 3b arranged on the inside of the vehicle and defining a closed cross section together with the pillar outer panel 3a. In this embodiment, the pillar inner panel 3b of the B-pillar 3 is formed integrally with the roof side rail 9 extending rearward from the upper end of the A-pillar 2. As shown in FIG. A pillar inner panel 3b of the B-pillar 3 extends downward from the middle portion of the roof side rail 9 in the front-rear direction. Below, the pillar inner panel 3b of the B pillar 3 is simply referred to as the pillar inner panel 3b.

(pillar inner panel)
A bracket fixing hole 3c for fixing the bracket 50 is formed in the upper end portion of the pillar inner panel 3b. In the present embodiment, two bracket fixing holes 3c are formed at positions separated in the front-rear direction near the upper edge of the pillar inner panel 3b at substantially the same height. One bracket fixing hole 3c is formed at the lower position. A pillar trim fixing hole 3d for fixing the pillar trim 30 is formed in the vicinity of the vertical center of the pillar inner panel 3b.

(pillar trim)
As shown in FIG. 6 and the like, the pillar trim 30 has a shape that protrudes toward the passenger compartment, and its horizontal cross section is substantially U-shaped. The pillar trim 30 is fixed to the pillar inner panel 3a while covering the lower portion of the bracket 50 from the passenger compartment side.

A protruding portion 31 that protrudes outward is provided on the upper portion of the side surface of the pillar trim 30 on the outer side of the vehicle. The protruding portion 31 is provided with two positioning protrusions 32, 32 which protrude outwardly of the vehicle at positions spaced apart in the front-rear direction.

(bracket)
FIG. 7 is a schematic perspective view of the bracket 50 as viewed from the passenger compartment side. FIG. 8 is a schematic perspective view of the bracket 50 viewed from the outside of the vehicle. 9 is a schematic cross-sectional view taken along the line IX-IX of FIG. 7. FIG.

The bracket 50 is attached near the upper end of the pillar inner panel 3b. As described above, the lower portion of the bracket 50 is covered with the pillar trim 30, and the bracket 50 has a size extending from a position below the upper edge 33 of the pillar trim 30 to a position above the upper edge 33. ing.

The bracket 50 includes a first vertical wall portion 110 extending in the front-rear direction and the vertical direction, a bottom wall portion 120 extending from a lower edge 110a of the first vertical wall portion 110 toward the outside of the vehicle, and a bottom wall portion 120 extending downward from the edge of the bottom wall portion 120 on the outside of the vehicle. It has an extending second standing wall portion 130 , a plurality of first holding pieces 140 extending downward from the bottom surface of the bottom wall portion 120 , and two second holding pieces 150 extending downward from the bottom surface of the bottom wall portion 120 . The first clamping piece 140 and the second clamping piece 150 correspond to the "clamping portion" in the claims. Note that the second holding piece 150 may be omitted. A portion 111 (hereinafter referred to as a central panel portion 111) of the first standing wall portion 110 excluding both end portions in the front-rear direction extends vertically along a vertical plane substantially orthogonal to the vehicle width direction. That is, the first standing wall portion 110 has a central panel portion 111 extending along the vertical plane at its central portion in the front-rear direction.

Both end portions of the first standing wall portion 110 in the front-rear direction are curved so as to be located on the outside of the vehicle as they are separated from the center panel portion 111 in the front-rear direction. Bracket fixed portions 112 are provided at both end portions of the first standing wall portion 110 in the front-rear direction so as to protrude outwardly of the vehicle. These bracket fixed portions 112 are formed with bracket fixed holes 112a penetrating the vehicle outer side surface and the vehicle interior side surface, respectively. Clips 90 for fixing the bracket 50 to the pillar inner panel 3b are attached to these bracket fixing holes 112a.

The height position of the lower edge of the central panel portion 111 is substantially constant in the front-rear direction. On the other hand, the lower edges of the portions of the first standing wall portion 110 that extend forward and rearward from the central panel portion 111 are curved so as to be located downward with distance from the central panel portion 111 in the front-rear direction. That is, the lower edge 110a of the first standing wall portion 110 extends at a constant height at the central portion in the front-rear direction, and is curved so as to be positioned downward as it moves away from the central portion in the front-rear direction. When viewed from the side, the central portion in the front-rear direction is formed in an arcuate shape that bulges upward. The outermost end portion in the front-rear direction of the first standing wall portion 110 extends in the vehicle width direction while the height of the lower edge thereof is substantially constant.

As shown in FIG. 8 , a rib 190 is provided on a vehicle-exterior surface of the first standing wall portion 110 so as to protrude outwardly from the surface, and the first standing wall portion 110 is reinforced by the ribs 190 . . That is, the rigidity of the first vertical wall portion 110 is increased by the ribs 190, and the upper portion of the bracket 50 is a highly rigid portion formed by the ribs 190 and the first vertical wall portion 110. As shown in FIG. In this embodiment, the rib 190 has a lattice shape when viewed from the side of the vehicle. Specifically, the rib 190 has a plurality of vertical ribs 191 extending in the vertical direction and two horizontal ribs 192 extending in the front-rear direction crossing the vertical ribs 191 and arranged vertically in parallel. Most of the ribs 190 are provided on the outer surface of the central panel portion 111 of the first standing wall portion 110, and the rigidity of the central panel portion 111 is particularly enhanced.

The bottom wall portion 120 extends outwardly of the vehicle from a lower edge 110a of the first standing wall portion 110 (more specifically, a lower edge of a portion of the first standing wall portion 110 excluding the outermost end portion in the front-rear direction). and a second bottom wall portion 122 extending outward from the outer edge of the first bottom wall portion 121 in the vehicle width direction.

The first bottom wall portion 121 is inclined outward and downward so as to be located downward toward the vehicle outer side. The second bottom wall portion 122 extends substantially horizontally toward the outside of the vehicle from the outer edge of the first bottom wall portion 121 in the vehicle width direction, that is, the lower edge. Both ends of the second bottom wall portion 122 in the front-rear direction are connected to the outermost end portions of the first standing wall portion 110 in the front-rear direction.

In this embodiment, part of the rib 190 is also located on the surface of the first bottom wall portion 121 on the vehicle exterior side. However, the rib 190 is provided above the central position of the first bottom wall portion 121 in the vertical direction, and the rigidity of the bottom wall portion 120 is kept lower than the rigidity of the first standing wall portion 121 .

The second standing wall portion 130 extends downward from the vehicle-exterior edge of the second bottom wall portion 122 . The second standing wall portion 122 has a front second standing wall portion 131 provided on the front side and a rear second standing wall portion 132 provided on the rear side. The front second standing wall portion 131 extends below the rear second standing wall portion 132 . A positioning hole 130a is formed in each of the front second vertical wall portion 131 and the rear second vertical wall portion 132 so as to extend through the vehicle outer side surface and the vehicle interior side surface.

Positioning hole 130 a is a hole for defining the relative position between bracket 50 and pillar trim 30 . Specifically, as shown in FIG. 6, the positioning projections 32, 32 of the pillar trim 30 are inserted into the positioning holes 130a, 130a. The outer diameter of the positioning projection 32 and the inner diameter of the positioning hole 130a are set to be substantially the same, and the pillar trim 30 is locked to the bracket 50 by inserting the positioning projection 32 into the positioning hole 130a. defines the position of the pillar trim 30 with respect to the bracket 50 .

A bracket fixing hole 130b is formed in the front second standing wall portion 131 at a position lower than the positioning hole 130a. A clip 90 for fixing the bracket 50 to the pillar inner panel 3b is attached to the bracket fixing hole 130b, similarly to the bracket fixing hole 112a provided in the first standing wall portion 110. As shown in FIG.

The first clamping piece 140 is formed in a plate shape extending in the vertical direction and in the vehicle width direction, that is, in a plate shape along a plane perpendicular to the vehicle front-rear direction. In this embodiment, one bracket 50 is provided with four first holding pieces 140 . The four first holding pieces 140 have the same structure. These first clamping pieces 140 are arranged parallel to each other at positions separated from each other in the front-rear direction. In the present embodiment, all of the four holding pieces 140 are provided in the region of the first vertical wall portion 110 where the central panel portion 111 is formed in the front-rear direction, and are arranged below the central panel portion 111. .

The first clamping piece 140 extends across the first bottom wall portion 121 and the second bottom wall portion 122 and extends downward from the bottom surfaces of the bottom wall portions 121 and 122 . The first clamping piece 140 is connected to the surface of the second standing wall portion 130 facing the passenger compartment, and extends from this surface toward the passenger compartment. The first clamping piece 140 extends in the vehicle width direction to substantially the same position as the end surface of the central panel portion 111 on the passenger compartment side. The inner end of the first clamping piece 140 in the vehicle width direction extends substantially straight in the vertical direction at substantially the same position (in the vehicle width direction) as the end face of the center panel portion 111 on the vehicle interior side. The compartment-side end surface and the compartment-side end surface of the first clamping piece 140 generally extend continuously in the vertical direction.

The height dimension of the portion of the first clamping piece 140 on the outside of the vehicle and extending downward from the second bottom wall portion 122 is generally constant in the vehicle width direction, and the height position of the lower edge of this portion is the same as that of the vehicle. It is generally constant in the width direction. On the other hand, the portion of the first clamping piece 140 on the side of the passenger compartment that extends downward from the first bottom wall portion 121 is inclined inwardly upward so that the lower edge of the portion extends upward toward the passenger compartment. ing.

The second clamping pieces 150 are provided one each at the front end and the rear end of the second bottom wall portion 122 , and are located in front of the frontmost first clamping piece 140 and in the rearmost portion. It is provided on the rear side of the first clamping piece 140 . The second holding piece 150 extends downward from the lower surface of the second bottom wall portion 122 . The second holding piece 150 is also formed in a plate shape extending in the vertical direction and the vehicle width direction like the first holding piece 140, but the second holding piece 150 is curved in the vehicle width direction. Specifically, the second holding piece 150 on the front side is curved toward the outside of the vehicle toward the front, and the second holding piece 150 on the rear side is curved toward the outside of the vehicle toward the rear. .

As shown in FIGS. 2 and 5, when the bracket 50 and the pillar trim 30 are attached to the pillar inner panel 3b, the first clamping pieces 140 and the second clamping pieces 150 are positioned at the upper edge 33 of the pillar trim 30. It faces this upper edge 33 above. Specifically, the portion of the first clamping piece 140 on the passenger compartment side that is inclined inwardly upward and the upper edge 33 of the pillar trim 30 face each other in the vertical direction, and the second clamping piece 150 extends over its entire length. It opposes both longitudinal end portions of the upper edge 33 of the pillar trim 30 . Between each clamping piece 140 and 150 and the upper edge 33 of the pillar trim 30, a gap is defined in the vertical direction. The top sealing 6 is arranged in a gap between these, the upper edge 33 of the pillar trim 30, and the clamping pieces 140, 150, and is clamped between the clamping pieces 140, 150 and the upper edge 33 of the pillar trim 30. there is

The procedure for attaching the bracket 50 and the pillar trim 30 to the pillar inner panel 3b is as follows.

First, the clip 90 is attached to the bracket 50 . Specifically, the clips 90 are inserted through the bracket fixing holes 112a, 112a, and 130b of the bracket 50, respectively. The tip portion of the clip 90 (the portion arranged on the outside of the vehicle) is configured to be elastically deformable in the radial direction. By doing so, it is attached to each hole 112a, 112a, 140b.

Next, the bracket 50 is attached to the pillar inner panel 3b via the clip 90. As shown in FIG. Specifically, the portion of the clip 90 that protrudes outward from the bracket 50 is inserted into the bracket fixing hole 3c of the pillar inner panel 3b. At this time, the clip 90 is fixed to the pillar inner panel 3b by contracting and expanding the diameter of the tip portion of the clip 90 as described above. Thereby, the bracket 50 is fixed to the pillar inner panel 3b.

In this embodiment, the bracket 50 is fixed to the pillar inner panel 3b so as not to move relative to it in the vehicle width direction. On the other hand, the bracket 50 is fixed to the pillar inner panel 3b in a state in which the clip 90 is allowed to move radially, that is, along the side surface of the pillar inner panel 3b on the passenger compartment side to some extent. Specifically, the outer diameter of the portion of the clip 90 that is inserted through the bracket fixing holes 112a, 112a, and 130b is set smaller than the inner diameter of the bracket fixing holes 112a, 112a, and 130b. It is attached to the bracket 50 so as to be relatively movable along a plane perpendicular to the axial direction of the clip 90 . On the other hand, the outer diameter of the portion of the clip 90 that is inserted through the bracket fixing hole 3c and the inner diameter of the bracket fixing hole 3c are set to be substantially the same size, and the clip 90 has bracket fixing holes 112a, 112a. , 130b and the bracket fixing hole 3c, the axial movement thereof is restricted. As a result, the bracket 50 is attached to the clip 90 and thus to the pillar inner panel 3b in a state in which relative movement in the vehicle width direction is restricted, but relative movement along the side surface of the passenger compartment is permitted.

Next, the pillar trim 30 is attached to the pillar inner panel 3b while both ends of the top ceiling 6 in the vehicle width direction are sandwiched between the pillar trim 30 and the bracket 50 . At this time, the pillar trim 30 is locked to the bracket 50 by inserting the positioning protrusions 32, 32 of the pillar trim 30 into the positioning holes 130a, 130a of the bracket 50, as shown in FIG. 6 and as described above. . Then, clips (not shown) provided on the pillar trim 40 are inserted into the pillar trim fixing holes 3d of the pillar inner panel 3b to fix the pillar trim 30 to the pillar inner panel 3b.

As a result, the pillar trim 30 is attached so as to cover the lower portion of the bracket 50 and the pillar inner panel 3b from the passenger compartment side while the relative positions of the bracket 50 and the pillar trim 30 are properly maintained. Also, the top ceiling 6 is held above the pillar trim 30 by the pillar trim 30 and the bracket 50 . Specifically, as described above, the upper edge 33 of the pillar trim 30 , the lower edge of the first clamping piece 140 and the lower edge of the second clamping piece 150 allow the top sealing 6 to come into contact with the upper edge 33 of the pillar trim 30 . held in contact. The bracket 50 is entirely covered by the pillar trim 30 and the top sealing 6 from the passenger compartment side.

Here, as described above, the extension portions 6a are provided at both ends of the top sealing 6 in the vehicle width direction. As a result, the extension 6a of the top ceiling 6 is sandwiched between the pillar trim 30 and the bracket 50. As shown in FIG.

Next, the positional relationship between the bracket 50 and the pillar trim 30 attached to the pillar inner panel 3b as described above, the top sealing 6, and the airbag device 70 will be described.

As shown in FIGS. 2 and 3, the curtain airbag 71 is arranged closer to the passenger compartment than the bracket 50 is. The curtain airbag 71 extends in the longitudinal direction through between the bracket 50 and the main body portion 6b of the top ceiling 6. As shown in FIG. The bracket 50 and the pillar trim 30 sandwich the end portion of the extension 6a on the outside of the vehicle. . The curtain airbag 71 is arranged above the portion of the extending portion 6a that extends from the bracket 50 and the upper edge 33 of the pillar trim 30 toward the passenger compartment, that is, above the portion of the extending portion 6a that faces the passenger compartment. The curtain airbag 71 is arranged at a position spaced upward from the extending portion 6a, and a space is defined between the curtain airbag 71 and the extending portion 6a.

At least a portion of the curtain airbag 71 is arranged to face the first vertical wall portion 110 in the vehicle width direction, and extends in the front-rear direction through the first vertical wall portion 110 on the vehicle interior side. Specifically, the curtain airbag 71 extends in the front-rear direction along the surface of the central panel portion 111 of the first standing wall portion 110 facing the passenger compartment. In this embodiment, in the vertical direction, the curtain airbag 71 is positioned in a range from a position below the upper edge of the first standing wall portion 110 to a position below the lower edge 110a of the first standing wall portion 110. ing. In the example of FIG. 2 , the curtain airbag 71 is positioned about ⅓ of the height of the first vertical wall portion 110 from the upper edge of the first vertical wall portion 110 in the vertical direction. It is arranged in a region from the upper edge to a position below about 1/4 of the maximum height dimension of the first clamping piece 140 . In addition, about three-fourths of the upper portion of the curtain airbag 71 is arranged above the lower edge 110 a of the first standing wall portion 110 .

As shown in FIGS. 3 and 4, the inflator 72 has a tubular shape extending in a predetermined direction, and has a gas supply portion 72a at one end in the longitudinal direction for blowing gas toward the curtain airbag 71. there is The inflator 72 is arranged closer to the passenger compartment than the bracket 50 in the vehicle width direction, and extends rearward from a position facing the upper end of the rear end portion of the bracket 50 with the gas supply portion 72a facing forward. extended. That is, the inflator 72 extends in the front-rear direction and is mounted above the top ceiling 6 in such a manner that the gas supply portion 72a serves as the front end. The gas supply portion 72a of the inflator 72 is arranged at a position overlapping the rear end portion of the bracket 50 when viewed from the side of the vehicle. The curtain airbag 71 extends forward from the gas supply portion 72a and then branches forward and rearward at a branch portion 71a.

Further, as shown in FIG. 2 and the like, the curtain airbag 71 is arranged closer to the passenger compartment than the upper edge 33 of the pillar trim 30 . Here, the pillar trim 30 has a shape that curves upward toward the passenger compartment, and the pillar trim 30 is configured such that its upper edge 33 is positioned closest to the passenger compartment. Therefore, the curtain airbag 71 is located closer to the passenger compartment than each part of the pillar trim 30 in the vehicle width direction.

(action, etc.)
10(a) and 10(b) are diagrams showing how the curtain airbag 71 is deployed.

Gas is supplied to the curtain airbag 71 from the gas supply portion 72a of the inflator 72 when the vehicle has a side collision or the like. The curtain airbag 71 tries to inflate downward, toward the passenger compartment, and toward the outer side of the vehicle, as indicated by arrows. However, as described above, the curtain airbag 71 is arranged facing the first standing wall portion 110 . Therefore, the expansion of the curtain airbag 71 toward the outside of the vehicle is restricted by the first standing wall portion 110 . In particular, in this embodiment, the rigidity of the first standing wall portion 110 is increased. Therefore, the amount of displacement of the first standing wall portion 110 toward the outside of the vehicle is kept small, and the amount of expansion of the curtain airbag 71 toward the outside of the vehicle is kept very small. Furthermore, in the present embodiment, the curtain airbag 71 is arranged along the central panel portion 111 having the highest rigidity among the first standing wall portions 110, so that the curtain airbag 71 is prevented from inflating toward the outside of the vehicle. suppressed more reliably. Further, since the central panel portion 111 is arranged to extend along the vertical plane, the downward deployment of the curtain airbag 71 is facilitated.

The curtain airbag 71 tends to inflate toward the outside of the vehicle even below the first standing wall portion 110 . However, between the lower edge 110a of the first standing wall portion 110 and the top ceiling 6, the first clamping pieces 140 are arranged side by side in the front-rear direction. Therefore, below the first standing wall portion 110 , the first pinching piece 140 restricts the expansion of the curtain airbag 71 toward the outside of the vehicle. If the first holding piece 140 were not present, a relatively large gap would be formed between the first standing wall portion 110 and the pillar trim 30, and the curtain airbag 71 would enter this gap. Therefore, there is a risk that the upper edge 33 of the pillar trim 30 or the like may be caught. On the other hand, in the present embodiment, the curtain airbag 71 is restricted from entering the vehicle outer side of the pillar trim 30 by the first clamping piece 140, thereby suppressing the curtain airbag 71 from being caught on the upper edge 33 of the pillar trim 30 and the like. be done.

As indicated by the dashed line in FIG. 10( a ), the downwardly inflated curtain airbag 71 collides with the top ceiling 6 . Here, the curtain airbag 71 is arranged above the extension 6a of the top ceiling 6, as described above. Therefore, the curtain airbag 71 mainly collides with the extending portion 6a. The extending portion 6a extends substantially horizontally. Therefore, as indicated by an arrow Y11, the direction of the force applied to the extending portion 6a from the curtain airbag 71 that is inflating downward is substantially orthogonal to the extending portion 6a. The expansion force of the bag 71 is effectively applied. Before being inflated, the curtain airbag 71 is arranged at a position spaced upward from the extending portion 6a. Therefore, the downward expansion speed of the curtain airbag 71 at the time of collision with the extension 6a is relatively high. Therefore, the curtain airbag 71 vigorously collides with the extension 6a, and a large downward force is more reliably applied to the extension 6a. As shown in FIG. 10(b), the downward force from the curtain airbag 71 causes the extension 6a to move downward from between the bracket 50 and the pillar trim 30. As shown in FIG. At this time, a large downward force is applied to the extending portion 6a as described above, so that the extending portion 6a separates from between the bracket 50 and the pillar trim 30 at an early stage.

Further, the portion of the curtain airbag 71 connected to the gas supply portion 72a has a large expansion force due to the high pressure gas being applied first. In contrast, in the present embodiment, since the gas supply portion 72a and the bracket 50 face each other, the expansion force of the portion of the curtain airbag 71 that faces the bracket 50 increases. Thus, in this embodiment, the portion of the top ceiling 6 held by the bracket 50, that is, the extension portion 6a, can be more reliably applied with a large force from the curtain airbag 71, and the top ceiling 6 can be lifted. The detachment from the bracket 50 and the pillar trim 30 can be made much earlier.

When the extending portion 6a is separated from between the bracket 50 and the pillar trim 30, the curtain airbag 71 enters the vehicle interior through the gap between the extending portion 6a and the pillar trim 30 and deploys along the side wall of the vehicle. . As described above, the curtain airbag 71 is arranged closer to the passenger compartment than the pillar trim 30 in the vehicle width direction. Therefore, the curtain airbag 71 quickly deploys to a region below the upper edge 33 of the pillar trim 30 without interfering with the pillar trim 30 .

As described above, in this embodiment, the top sealing 6 is sandwiched between the bracket 50 and the upper edge 33 of the pillar trim 30 . Therefore, even when the top ceiling 6 deviates from the optimum position with respect to the pillar trim 30, the relative positions of the bracket 30 and the pillar trim 30 are properly maintained, so that the top ceiling 6 can be properly held by them. Therefore, the workability of attaching the pillar trim 30 and the top ceiling 6 can be improved. Moreover, since the curtain airbag 71 is arranged above the vehicle interior side portion of the substantially horizontally extending extension 6a of the top ceiling 6, as the curtain airbag 71 is inflated downward, A force can be applied from the curtain airbag 71 to the top ceiling 6 in a direction orthogonal thereto. Therefore, the top ceiling 6 can be quickly released from between the bracket 50 and the pillar trim 30 while the gas supply force of the inflator 72 is kept low, so that the curtain airbag 71 can be quickly deployed along the side wall of the vehicle compartment. .

Further, as described above, the curtain airbag 71 is arranged at a position spaced apart from the extending portion 6a, so that the curtain airbag 71 can collide with the extending portion 6a with force. Therefore, the extension 6a, that is, the top ceiling 6 can be removed from between the bracket 50 and the pillar trim 30 more quickly. Alternatively, the gas supply power of the inflator 72 can be kept lower.

Further, as described above, since the curtain airbag 71 is arranged closer to the passenger compartment than the pillar trim 30, interference between the curtain airbag 71 and the pillar trim 30 can be suppressed when the curtain airbag 71 is deployed. can be deployed more smoothly.

Further, as described above, the inflator 72 is sandwiched between the bracket 50 and the pillar trim 30 of the top ceiling 6 by arranging the gas supply portion 72a at a position substantially coinciding with the end portion of the bracket 50 in the front-rear direction. A strong force can be efficiently applied to the part where the top sealing 6 is formed, and the gas supply force of the inflator 72 can be suppressed to a low level, and the top sealing 6 can be more reliably removed from between the bracket 50 and the pillar trim 30 at an early stage.

(Modification)
The upper interior structure of the vehicle may be applied around pillars other than the B pillar 3 . FIG. 11 is a schematic view of the peripheral portion of the C-pillar 4 when the above-described interior structure is applied around the C-pillar 4, viewed from the passenger compartment side. In FIG. 11, the top sealing 6 is omitted. FIG. 12 is a schematic cross-sectional view of a cross section taken along line XII-XII in FIG.

11 and 12, a bracket 250 (hereinafter referred to as C bracket 250) is attached to the pillar inner panel 4b of the C pillar 4 (hereinafter referred to as C pillar inner panel 4b). Similar to the bracket 50 provided on the B pillar 3, the C bracket 250 includes a first vertical wall portion 251 extending in the vertical direction, and a bottom wall portion 252 extending from a lower edge 251a of the first vertical wall portion 251 to the outside of the vehicle. , a plurality of first clamping pieces 253 extending downward from the lower surface of the bottom wall portion 252 . These first holding pieces 253 are arranged parallel to each other in the front-rear direction, similar to the bracket 50 described above. Also in this example, the upper edge 233 of the pillar trim 40 covering the C-pillar 4 from the passenger compartment side and the bracket 250 sandwich the portion of the extension 6a of the top ceiling 6 outside the vehicle. A curtain airbag 71 is housed above the part of the vehicle compartment side of 6a, so that the top ceiling 6 can be easily attached to the vehicle body and the curtain airbag 71 can be quickly deployed in the vehicle compartment. be able to. In addition, since the curtain airbag 71 is arranged at a position spaced upward from the extending portion 6a, a strong force is applied to the extending portion 6a to quickly deploy the curtain airbag 71 into the vehicle interior. can be done.

In the above embodiment, the lower edge 110a of the first standing wall portion 110 of the bracket 50 is configured to extend along a line in which the center in the front-rear direction bulges upward when viewed from the side of the vehicle. However, instead of this, a bracket 250 as shown in FIGS. 13 and 14 (schematic cross-sectional view of a cross section taken along line XIV-XIV in FIG. 13) may be used.

Specifically, in the bracket 350 according to the second embodiment shown in FIGS. The entire bottom wall portion 320 extending outward from the lower edge 310 a extends substantially horizontally outward from the lower edge 310 a of the first standing wall portion 310 . A first clamping piece 340 extends downward from the lower surface of the substantially horizontally extending bottom wall portion 320, and the height dimension of the first clamping piece 340 is substantially constant in the vehicle width direction. 13 and 14, the bracket 50 shown in FIG.
The same reference numerals as in FIG. 7 etc. are attached to the members having the same structure.

Also, a bracket 450 as shown in FIGS. 15 and 16 (schematic cross-sectional views taken along line XVI-XVI in FIG. 15) may be used. Specifically, a bracket 450 according to the third embodiment shown in FIGS. 15 and 16 has a bottom wall portion including a first bottom wall portion 421 and a second bottom wall portion 422, similar to the bracket 50 shown in FIG. It has a wall portion 420 and a first standing wall portion 410 . On the other hand, the bracket 450 according to the third embodiment extends downward from the first bottom wall portion 421 and has a relatively large width in the front-rear direction instead of the first clamping piece 140 shown in FIG. It has a first extension piece 440a and a plate-like second extension piece 440b that extends substantially horizontally outward from the lower edge of the first extension piece 440a. The first extending piece 440a and the second extending piece 440b can be formed by extruding a part of the first bottom wall portion 121 and the second bottom wall portion 122 of the bracket 50 according to the first embodiment. According to the bracket 450 according to the third embodiment, these extension pieces 440a and 440b have the same function as the first clamping piece 140 (the function of clamping the top sealing 6 with the upper edge 33 of the pillar trim 30). , below the first standing wall portion 451, a portion having a function of restricting the expansion of the curtain airbag 71 toward the outside of the vehicle can be easily formed. In addition, since portions of the bottom wall portions 421 and 422 facing the first extending piece 440a and the second extending piece 440b are removed, the weight of the bracket 450 is reduced. 13 to 16, members having the same structure as the bracket 50 shown in FIG. 7 etc. are assigned the same reference numerals as in FIG. 7 etc. FIG.

3 B pillar (pillar)
3b Pillar inner panel 6 Top sealing 6a Extension part 30 Pillar trim 33 Upper edge of pillar trim 50 Bracket 70 Airbag device 71 Curtain airbag 72 Inflator 72a Gas supply part 140 First holding piece (holding part)
150 second clamping piece (clamping portion)

Claims (5)

An upper interior structure for a vehicle, comprising: a pillar trim attached to a pillar that defines an opening of a vehicle and covering the pillar from the passenger compartment side; and a top ceiling that is provided above the pillar trim and covers the ceiling of the passenger compartment. ,
an airbag device including a curtain airbag that is housed above the top ceiling and deploys to cover a side wall of the vehicle compartment;
a bracket provided above the top ceiling and holding the top ceiling;
The top ceiling has an extension extending substantially horizontally at its end in the vehicle width direction,
The bracket includes a clamping portion that vertically clamps an outer end portion of the extending portion in the vehicle width direction with an upper edge of the pillar trim ,
The upper interior structure of a vehicle , wherein the bracket is attached to the pillar in a state in which relative movement is allowed along a side surface of the pillar on the passenger compartment side . In the vehicle upper interior structure according to claim 1,
The upper interior structure of a vehicle, wherein the curtain airbag is housed above an inner portion of the extending portion in the vehicle width direction and inward of the pillar trim in the vehicle width direction. In the vehicle upper interior structure according to claim 1 or 2,
The upper interior structure of a vehicle, wherein the curtain airbag is housed at a position spaced upward from the extending portion. In the vehicle upper interior structure according to any one of claims 1 to 3,
The airbag device includes an inflator having a gas supply unit connected to the curtain airbag and supplying gas from the gas supply unit to the curtain airbag,
The upper interior structure of a vehicle, wherein the inflator is arranged such that the gas supply portion of the inflator substantially coincides with an end portion of the bracket in the front-rear direction. In the vehicle upper interior structure according to any one of claims 1 to 4,
The upper interior structure of a vehicle, wherein the pillar trim is provided with a positioning portion for locking the bracket.

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