JP7364408B2 - Vehicle cabin structure - Google Patents

Description

The present invention relates to a vehicle cabin structure.

Generally, a side wall panel made of sheet metal is provided in a door portion of a vehicle such as an automobile. This side wall panel has an outer panel on the outside of the vehicle and an inner panel on the inside of the vehicle. Furthermore, a resin inner trim is provided on the interior side of the inner panel. It is also known that a shock absorber is disposed between the inner panel and the inner trim to suppress the impact on the lower back and chest of the occupant in the event of a side collision. Note that a guide rail is provided in the space between the outer panel and the inner panel to support the door glass so that it can move up and down.

In addition, in order to maintain the shape of the door in the event of a head-on collision or an offset collision, and to prevent the door from collapsing and trapping or pinching the occupants inside the vehicle, there is a It is known that impact beams are arranged along the line. In this car door structure, the impact beam is installed, so when an obstacle collides with the car body from the side, the outer panel and the impact beam deform while absorbing the impact energy, the impact beam hits the guide rail, and the inner panel After the impact absorber compresses and deforms upon impact with the panel and absorbs the impact energy, the door trim hits the occupant's waist, thereby alleviating the impact on the occupant.

Furthermore, in the above-mentioned automobile door structure, in order to prevent the upper part of the door from entering the interior of the vehicle interior and impacting the occupant's chest in the event of a side collision, the guide rail intersects with the impact beam when viewed from the side. A structure in which a weak portion is formed at a certain position has been proposed. In this automobile door structure, when an impact load is applied to the guide rail during a side collision, the guide rail easily bends at the weak part, preventing the upper part of the door from entering the interior of the vehicle. (See Patent Document 1).

Japanese Patent Application Publication No. 2000-127880

However, due to the strength and angle of the impact caused by a side collision (hereinafter referred to as a side collision), the energy transmitted from the outer and inner panels may cause the inner trim to deform in unexpected places, causing it to be in an inappropriate position relative to the occupants. There was a risk of a shock being applied.

The present invention has been made to solve these conventional problems, and by controlling the deformation of the inner trim, the occupant can be stably and appropriately moved to the non-collision side, and the occupant protection function is improved. An object of the present invention is to provide a vehicle cabin structure that can increase the performance.

A vehicle cabin structure according to the present invention includes a side wall panel constituting a side wall portion of the cabin, and an inner trim that is an interior member engaged with the side wall panel, and the side wall panel is connected to the side wall panel. The inner trim has a panel bent portion that induces deformation of the inner trim due to an impact input to the side wall panel, and the inner trim has a trim bent portion that induces deformation of the inner trim due to an impact input to the side wall panel. On the other hand, it is characterized in that it is located above in the vertical direction of the vehicle.

and a seat seat on which a passenger is seated, the seat part being movable, and the inner trim having a distance from the trim bending part to the lower end of the inner trim, the distance from the trim bending part to the seat of the seat seat. The trim bent portion may be provided at a position longer than the distance to the lower end of the trim.

The invention further includes a plurality of engaging parts that engage the side wall panel and the inner trim, at least one of the engaging parts being provided near and above the trim bent part. You can also do this.
Furthermore, the engaging portion provided near and above the trim bent portion may be more firmly engaged than the other engaging portions at least in the vertical direction.

Further, the side wall panel may include a reverse folding panel bend portion above the panel bend portion and below the trim bend portion for inducing deformation of the side wall panel.

According to the present invention, it is possible to provide a vehicle cabin structure that can stably and appropriately move an occupant toward a non-collision side by controlling the deformation of an inner trim, and can enhance the protection function for the occupant. Can be done.

FIG. 1 is a side view showing an example of a vehicle equipped with a cabin structure according to an embodiment of the present invention. 1 is a schematic cross-sectional view showing an example of a vehicle equipped with a cabin structure according to an embodiment of the present invention. It is a schematic diagram which shows an example of the change of the vehicle interior structure at the time of a side collision in embodiment of this invention. It is a schematic sectional view showing an example of a vehicle provided with the cabin structure in a 2nd embodiment. FIG. 7 is a schematic diagram illustrating an example of a change in the cabin structure in the event of a side collision in the second embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
In this embodiment, the definitions of upper and lower are based on the vertical direction of the vehicle. For example, the upper side in the vertical direction of the vehicle is simply referred to as the upper side, and the lower side in the vertical direction of the vehicle is simply referred to as the lower side. The same applies to the upper part, lower part, upper end, lower end, etc.

(First embodiment)
FIG. 1 is a side view showing an example of a vehicle equipped with a cabin structure according to an embodiment of the present invention. Moreover, FIG. 2 is a cross-sectional view showing an example of a vehicle equipped with a cabin structure according to an embodiment of the present invention. Moreover, FIG. 3 is a schematic diagram showing an example of a change in the cabin structure in the event of a side collision in the embodiment of the present invention.

(Configuration of vehicle 1)
As shown in FIGS. 1 and 2, a front door 10 and a rear door 20 are provided on the side of the vehicle body of the vehicle 1. Further, an underfloor 3 is provided at the bottom of the vehicle 1, and a roof 4 is provided at the top. A vehicle interior is formed by an underfloor 3, a roof 4, a front door 10, a rear door 20, and the like.

Furthermore, a seat 30 is provided on the underfloor 3.
Note that the characteristic structure of the cabin structure of the vehicle according to the present invention is that the front door 10 and the rear door 20 are the same on the left and right sides. The seat sheet 30 will be explained.

(Seat sheet 30)
The seat 30 is for a passenger P riding in the vehicle 1 to sit on. The seat 30 also includes a seat cushion 31 (seat portion) that supports the buttocks to thighs of the occupant P, a seat back 32 (backrest portion) that is provided so as to be reclinable, and a headrest 33 that supports the head of the occupant P. (head part).
Moreover, the outer side of the seat cushion 31 is movable upward. Alternatively, it can rotate upward around the center of the vehicle 1.

(Front door 10)
The front door 10 includes an outer panel 11, an inner panel 12, and an inner trim 13. Further, the inner panel 12 and the inner trim 13 are engaged with each other through an engaging portion 14 .
Further, the outer panel 11 and the inner panel 12 form a side wall panel that constitutes a side wall portion of the vehicle interior. Further, a space is provided between the outer panel 11 and the inner panel 12 to accommodate the window glass 15 in a manner that the window glass 15 can be raised and lowered, and a mechanism (not shown) for raising and lowering the window glass 15 is provided.
Furthermore, a shock absorber (not shown) is provided between the inner panel 12 and the inner trim 13.

(Outer panel 11)
The outer panel 11 is provided on the outside of the vehicle 1 and forms an outer wall. Further, the outer panel 11 is designed to directly receive and absorb external shocks.

(Inner panel 12)
The inner panel 12 is provided inside the vehicle 1 with respect to the outer panel 11, and forms an inner wall. Further, the inner panel 12 is provided with a panel bending portion 12a that induces deformation of the inner panel 12 upon impact input.

The panel bent portion 12a is provided at a position lower than the height (for example, 180 mm) of the top of a bumper provided on a vehicle with a typical vehicle height. Further, the panel bent portion 12a is provided at a position higher than the height of the lower portion of the bumper (for example, 100 mm).

Further, the panel bent portion 12a is a fragile portion provided with a cutout hole or the like so that the inner panel 12 can be easily bent inside the vehicle 1. That is, when an impact is applied to the outer panel 11 due to a side collision from an external vehicle, etc., the impact is transmitted through the inner panel 12, and the inner panel 12 easily bends in a mountain fold toward the inside of the vehicle 1 at the panel bending portion 12a. It has become.
Note that the fragile portion is not limited to a notch hole such as a round hole or a rectangular hole, but may be a notch groove or the like.

(Inner trim 13)
The inner trim 13 is an interior member that is engaged with the inner panel 12, is provided closer to the vehicle interior than the inner panel 12, and has a shock absorber provided therein. Further, the inner trim 13 is provided with a trim bent portion 13a that induces deformation of the inner trim 13 upon impact input.

The trim bent portion 13a is provided at a position higher than the height of the top of a bumper provided on a vehicle with a typical vehicle height. That is, the trim bent portion 13a is provided at a higher position than the panel bent portion 12a of the inner panel 12.

Note that an engaging portion 14 that engages the inner panel 12 and the inner trim 13 is provided near or above the trim bent portion 13a of the inner trim 13.
Further, the upper end and lower end of the inner trim 13 are simply connected to the inner panel 12. In particular, the connection at the lower end of the inner trim 13 is weaker than the rigidity of the inner trim 13, and easily comes off due to an impact such as a side collision.

Further, like the panel bending part 12a, the trim bending part 13a is a fragile part with a cutout hole or the like so that the inner trim 13 can be easily bent inside the vehicle 1. That is, when an impact is applied to the outer panel 11 due to a side collision of an external vehicle, etc., and the impact is transmitted through the inner panel 12 and further transmitted to the inner trim 13, the inner trim 13 is caused to impact against the inside of the vehicle 1 at the trim bending portion 13a. The valley fold makes it easier to bend.

Furthermore, the distance from the lowest end of the inner trim 13 to the trim bent portion 13a is longer than the distance from the trim bent portion 13a to the lower end of the seat cushion 31 on the vehicle outer side. Specifically, when an arc with a length on the lower side of the trim bending part 13a of the inner trim 13 (hereinafter referred to as the lower part of the inner trim 13) is drawn around the trim bending part 13a, this arc is It comes into contact with the lower part of the cushion 31.

That is, when the lower portion of the inner trim 13 rotates toward the interior of the vehicle cabin around the trim bent portion 13a, it comes into contact with the lower portion of the seat cushion 31. The outer side of the seat cushion 31 is movable upward. Alternatively, since the seat cushion 31 can be rotated upward around the center of the vehicle 1, the outer side of the seat cushion 31 is pushed upward by the lower part of the inner trim 13, and the seat cushion 31 is rotated toward the inside of the vehicle. becomes.

Hereinafter, a case where another vehicle collides with the vehicle 1 will be described.
FIG. 3 is a schematic diagram showing a change in the cabin structure of the vehicle 1 when the other vehicle 60 side-collides with the vehicle 1.

As shown in FIG. 3, when the other vehicle 60 collides with the right front door 10 of the vehicle 1, the bumper of the other vehicle 60 first comes into contact with the outer panel 11, deforming the outer panel 11 to the inside of the vehicle 1. Then, by deforming the outer panel 11, the inner panel 12 is deformed. Here, since the inner panel 12 is provided with the panel bent portion 12a at a position lower than the highest point (highest position) of the bumper of the other vehicle 60, the vehicle Bend inward. That is, the inner panel 12 is bent so that the peak of the mountain fold is located inside the vehicle 1.

Furthermore, the impact transmitted to the inner panel 12 is transmitted to the inner trim 13, and the inner trim 13 is also deformed. At this time, since the inner trim 13 is provided with the trim bent portion 13a, the inner trim 13 is bent at the trim bent portion 13a. That is, since the inner panel 12 is bent at the panel bent portion 12a, the portion of the panel bent portion 12a strongly pushes the inner trim 13 toward the inside of the vehicle, and the lower portion of the inner trim 13 than the trim bent portion 13a moves toward the inside of the vehicle. As a result, the lower portion of the inner trim 13 rotates upward about the trim bent portion 13a.

More specifically, the trim bent portion 13a of the inner trim 13 is provided at a higher position than the highest point of the bumper of the other vehicle 60, and is also provided at a higher position than the panel bent portion 12a of the inner panel 12. . Therefore, the panel bent portion 12a of the inner panel 12 (including the portion above the panel bent portion 12a) extends the portion of the inner trim 13 below the trim bent portion 13a (the lower portion of the inner trim 13) to the inside of the vehicle 1. It will be pushed into.

At this time, the inner panel 12 and the inner trim 13 are engaged with each other by the engaging portion 14 near the trim bent portion 13 a of the inner trim 13 . Therefore, the portion of the inner trim 13 above the engaging portion 14 is deformed substantially parallel to the inner panel 12. On the other hand, the connection between the lower end of the inner trim 13 and the inner panel 12 is weaker than the rigidity of the inner trim 13. Therefore, when the lower part of the inner trim 13 is pushed into the inside of the vehicle 1 by the panel bent part 12a of the inner panel 12, the lower end part of the inner trim 13 comes off from the inner panel 12, and the inner trim 13 is pushed inward at the trim bent part 13a. Bend it so that it becomes a valley fold. Then, the lower portion of the bent inner trim 13 rotates inwardly and upwardly about the trim bent portion 13a.

Then, the lower part of the inner trim 13 rotated around the trim bent part 13a comes into contact with the lower part of the seat cushion 31 of the seat 30. When the impact from the external vehicle B is large, the lower part of the inner trim 13 further rotates upward, causing the seat cushion 31 to rotate upward and inside the vehicle 1.
As a result, the occupant P who was seated on the seat cushion 31 of the seat 30 is moved to the inside of the vehicle 1, and the passenger P is avoided from the direct impact of the other vehicle 60, or the impact is alleviated.

As described above, in the vehicle cabin structure of the present embodiment, the panel bending portion 12a that induces deformation of the inner panel 12 is formed in the inner panel 12, and the trim that induces deformation of the inner trim 13 is formed in the inner trim 13. Since the bent portion 13a is formed and the trim bent portion 13a of the inner trim 13 is formed above the panel bent portion 12a of the inner panel 12, deformation of the inner trim 13 can be controlled and unexpected deformation of the inner trim 13 can be prevented. The occupant protection function can be enhanced without causing injury to the occupant P.

Furthermore, since the distance from the trim bent part 13a of the inner trim 13 to the lower end of the inner trim 13 is made longer than the distance from the trim bent part 13a of the inner trim 13 to the outer lower end of the seat cushion 31 of the seat 30, the inner trim 13 Due to this deformation, the seat cushion 31 can be rotated upward, and the occupant P can be stably and appropriately moved to the non-collision side, and the protection function for the occupant P can be enhanced.

(Second embodiment)
Next, a description will be given of a vehicle cabin structure in which the inner panel 12 is provided with two panel bending portions.
FIG. 4 is a schematic cross-sectional view showing an example of a vehicle equipped with the cabin structure according to the second embodiment. Moreover, FIG. 5 is a schematic diagram showing an example of a change in the cabin structure in the event of a side collision in the second embodiment.

In this embodiment, the structure other than the inner panel 12 is the same as the cabin structure of the first embodiment, so the explanation will be omitted.

(Inner panel 12)
The inner panel 12 is similar to the inner panel 12 of the first embodiment, and is provided inside the vehicle 1 with respect to the outer panel 11, and forms an inner wall. In addition to the panel bending part 12a, the inner panel 12 is provided with a reverse folding panel bending part 12b that induces deformation of the inner panel 12 by impact input.

The panel bent portion 12a is similar to the panel bent portion 12a of the first embodiment, and is provided at the same position.

(Reverse folding panel bent part 12b)
The reverse bending panel bending portion 12b is provided at a position higher than the height of the top of a bumper provided on a vehicle with a general vehicle height. Further, the reverse folding panel bent portion 12b is provided at a lower position than the trim bent portion 13a of the inner trim 13.
That is, the reverse folding panel bent portion 12b is provided at a position higher than the panel bent portion 12a of the inner panel 12 and lower than the trim bent portion 13a of the inner trim 13.

Further, the reverse folding panel bending portion 12b is a fragile portion provided with a cutout hole or the like so that the inner panel 12 can be easily bent inside the vehicle 1. When an impact is applied to the outer panel 11 due to a side collision from an external vehicle, the impact is transmitted through the inner panel 12, and the inner panel 12 is valley-folded toward the inside of the vehicle 1 at the reverse folding panel bending portion 12b. It is easy to bend.
Note that the fragile portion is not limited to a notch hole such as a round hole or a rectangular hole, but may be a notch groove or the like.

Further, the inner panel 12 and the inner trim 13 are engaged with each other through a plurality of engagement portions 14a, 14b, and 14c. The engaging portion 14a is provided near the reverse folding panel bent portion 12b of the inner panel 12 and the trim bent portion 13a of the inner trim 13, and above the trim bent portion 13a.
Further, the engaging portion 14b connects the upper end portion of the inner panel 12 and the upper end portion of the inner trim 13 with a force weaker than that of the engaging portion 14a. Furthermore, the engaging portion 14c connects the lower end of the inner panel 12 and the lower end of the inner trim 13 with a force weaker than that of the engaging portion 14a. That is, the engagement by the engagement portion 14a is more firmly engaged than the engagement by the engagement portions 14b and 14c. Further, the engagement of the engaging portions 14b and 14c is weaker than the rigidity of the inner rim 13.
Therefore, when an impact such as a side collision is applied to the vehicle 1, the engagement by the engagement part 14a is maintained, but the engagement by the engagement parts 14b and 14c is likely to come off, especially in the lower part than the engagement part 14a. In the case of an impact to , the engaging portion 14c will always come off before the engaging portion 14a.
Note that the engaging portions may be provided in areas other than the upper and lower ends of the inner panel 12 and the inner trim 13. Also in this case, the engagement by the engagement portion 14a is more firmly engaged than the engagement by the other engagement portions.

Hereinafter, a case will be described in which the other vehicle 60 side-collides with the vehicle 1 in this embodiment.
As shown in FIG. 5, similarly to the first embodiment, when the other vehicle 60 collides with the right front door 10 of the vehicle 1, the bumper of the other vehicle 60 first comes into contact with the outer panel 11, and the outer panel 11 is transformed into the inside of the vehicle 1. Then, by deforming the outer panel 11, the inner panel 12 is deformed.

Here, the inner panel 12 is provided with a panel bent portion 12a at a position lower than the highest point of the bumper of the other vehicle 60, and a reverse folding panel bent portion 12b at a position higher than the highest point of the bumper of the other vehicle 60. is provided. As a result, the panel bent portion 12a of the inner panel 12 is pushed inside the vehicle 1, and the reverse folding panel bent portion 12b is not pushed, so that the reverse folding panel bent portion 12b is bent inside the vehicle 1 in a valley fold, and the panel The bent portion 12a is bent into a mountain fold inside the vehicle 1.

Furthermore, the impact transmitted to the inner panel 12 is transmitted to the inner trim 13, and the inner trim 13 is also deformed. At this time, since the inner trim 13 is provided with the trim bent portion 13a, the inner trim 13 is bent at the trim bent portion 13a.

Here, the vicinity of the trim bent portion 13a of the inner trim 13 and the vicinity of the reverse folding panel bent portion 12b of the inner panel 12 are engaged with each other by an engaging portion 14a. Therefore, like the deformed shape of the inner panel 12, the inner trim 13 is bent inward at the trim bending portion 13a of the inner trim 13 to form a valley fold.
Further, the bent lower portion of the inner trim 13 is pushed into the panel bent portion 12a of the inner panel 12 by the inside of the vehicle 1. On the other hand, since the engagement by the engagement part 14c is weaker than the engagement by the engagement part 14a and also weaker than the rigidity of the inner trim 13, the lower end of the inner trim 13 is separated from the lower end of the inner panel 12. As a result, the lower portion of the inner trim 13 is rotated inwardly and upwardly about the trim bent portion 13a.

Therefore, the lower part of the inner trim 13 rotated around the trim bending part 13a comes into contact with the lower part of the seat cushion 31 of the seat 30, and the lower part of the inner trim 13 further rotates upward, thereby moving the seat cushion 31 into the vehicle. Rotate it upwards inside of 1.
As a result, the occupant P who was seated on the seat cushion 31 of the seat 30 is moved to the inside of the vehicle 1, and the passenger P is avoided from the direct impact of the other vehicle 60, or the impact is alleviated.

As described above, the vehicle cabin structure of the present embodiment includes a panel bending part 12a that induces deformation of the inner panel 12 and a reverse bending panel bending part 12b in the inner panel 12 of the bumper of the vehicle B. Since it is formed below and above the highest point, the valley fold deformation of the inner trim 13 can be caused more reliably, the seat cushion 31 can be moved, and the occupant protection function can be enhanced.
Note that in this embodiment, the seat cushion 31 constitutes the seat portion of the present application.

1 Vehicle, 3 Underfloor, 4 Roof, 10 Front door, 11 Outer panel, 12 Inner panel, 12a Panel bent part, 12b Reverse folding panel bent part, 13 Inner trim, 13a Trim bent part, 14, 14a, 14b, 14c Engagement Part, 15 Windshield, 20 Rear door, 30 Seat, 31 Seat cushion, 32 Seat back, 33 Headrest, 60 Other vehicle

Claims (5)

In the vehicle cabin structure,
A side wall panel forming a side wall portion of the vehicle compartment;
an inner trim that is an interior member that is engaged with the side wall panel;
Equipped with
The side wall panel has a panel bending portion that induces deformation of the side wall panel into a mountain fold with respect to the inside of the vehicle due to an impact input to the side wall panel,
The inner trim has a trim bending part that induces deformation of the inner trim into a valley fold with respect to the inside of the vehicle due to an impact input to the side wall panel, and the trim bending part is arranged upwardly in the vertical direction of the vehicle with respect to the panel bending part. have,
A vehicle cabin structure characterized by:
A seat with a movable seat for a passenger to sit on;
Equipped with
The inner trim is provided with the trim bent portion at a position where the distance from the trim bent portion to the lower end of the inner trim is longer than the distance from the trim bent portion to the lower end of the seat of the seat. There is,
The vehicle cabin structure according to claim 1, characterized in that: a plurality of engaging portions that engage the side wall panel and the inner trim;
Equipped with
At least one of the engaging parts is provided near and above the trim bent part,
The vehicle cabin structure according to claim 1 or 2, characterized in that: The engaging portion provided near and above the trim bent portion is more firmly engaged than the other engaging portions at least in the vertical direction;
The vehicle cabin structure according to claim 3, characterized in that: The side wall panel has a reverse folding panel bend above the panel bend and below the trim bend for inducing deformation of the side wall panel.
The vehicle cabin structure according to any one of claims 1 to 4, characterized in that: