JP2975464B2 - Car rear structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle having a rear seat in which a passenger sits rearward at the rearmost portion of the interior of the vehicle, wherein the safety of the passenger sitting on the rear seat is improved. It is about structure.

[0002]

2. Description of the Related Art In recent years, the use of automobiles has expanded, and the demands of automobile users have been increasing.
As a part of such a tendency to expand the types of vehicles, automobiles having rear seats for occupants to be seated backward at the rearmost portion of the vehicle interior have been developed. The passenger can get on and off the rear seat by opening and closing a back door provided at the rear of the vehicle body, and the occupant sitting on the rear seat can enjoy the rear view of the vehicle.

[0003]

On the other hand, there has been a recent tendency to improve the safety of occupants of automobiles as a social demand. In particular, various devices for ensuring the safety of occupants in the event of an automobile collision have been developed. Is being developed. For example, an airbag device that is inflated and interposed between an occupant and a vehicle during a collision of the vehicle and cushions an impact on the occupant, and a device for preventing a knee of the occupant from hitting and damaging a rigid member of the vehicle. A knee protector or the like is used. Such a demand for safety is also applied to the rear seats arranged at the rearmost portion of the passenger compartment so that the occupant can sit backward, and for such a rear seat occupant,
The problem is not only the safety when a vehicle collides from the front but also the safety especially when another vehicle collides from the rear.

Accordingly, an object of the present invention is to improve the safety of an occupant sitting in the rear seat of a vehicle having a rear seat in which the occupant sits rearward at the rearmost portion of the passenger compartment. It is to provide a structure.

[0005]

In order to achieve the above-mentioned object, a rear structure of a vehicle according to the present invention is provided with a rear seat on which a passenger is seated rearward at a rearmost position in a vehicle cabin, and is opposed to the rear seat. And a knee protector for protecting a knee of an occupant seated in the rear seat is attached to the back door. If such a knee protector is provided on the back door of the vehicle, the impact on the knees of the occupant is cushioned by the knee protector even when another vehicle collides from behind, and the occupant's safety is improved. In addition to installing this knee protector, if an airbag is provided between the head of the occupant and the rigid member of the car to protect the occupant in the event of a car collision, the safety of the occupant will be further improved. I do.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a rear seat 4 on which an occupant 3 is seated rearward is located at the rearmost part of a cabin 2 of an automobile 1.
A back door 5 for getting on and off the rear seat 4 is provided at the rear of the vehicle 1. The back door 5 opens and closes in a direction AB in FIG. 1 around a hinge 6 arranged on the ceiling of the automobile 1.

The back door 5 is formed by integrally joining an inner panel 5a and an outer panel 5b at a predetermined interval, and a rear window 7 is provided at an opening of the inner panel 5a and the outer panel 5b. . The rear window 7 is made of safety laminated glass. The knee protector 8 is provided on the inner panel 5a, and the knee protector 8 is made of a flexible material, for example, a synthetic resin sheet. The rear face of the knee protector 8 is in contact with the knee protector reinforcement 9, and the knee protector 8 is slightly moved toward the rear seat 4 by the reinforcement 9 in the upper part.
It is configured to protrude (see FIG. 1). As a result, the foot area of the rear seat 4 can be secured in addition to the original function of the knee protector 8.

As shown in FIG. 4, the reinforcement 9 is made of a metal material bent in a U-shape as a whole. The reinforcement 9 is fixed to a bracket 10 disposed between the inner panel 5a and the outer panel 5b of the back door 5 by means such as spot welding, and the free end side is formed on the inner panel 5a. It protrudes toward the knee protector 8 through the opening. The bracket 10 is fixed to the outer panel 5b of the back door 5, and the reinforcement 9 is supported by the bracket 10 and extends inside the back door 5 in the vehicle width direction. Therefore, the knee protector 8 is supported by the reinforcement 9 over substantially the entire width of the back door 5.

On the other hand, two airbags 11 and 12 are installed on the ceiling of the cabin 2, the airbag 11 inflates along the inner surface of the rear window 7 of the back door 5, and the airbag 12 is mounted on the rear seat. The space between the fourth seat 13 and the second row of seats 13 expands along the headrest 13 a of the seat 13. The airbags 11 and 12 are normally stored in the ceiling of the automobile 1 when the inflators 11 a and 12 a are ignited by a signal generated by the collision sensors 14, 15 and 16 when the automobile 1 collides.
The gas expands to a predetermined size by the gas pressure generated by 1a and 12a. The airbag 11 inflates when the vehicle 1 is hit by a collision, and the airbag 12 expands when the vehicle 1 collides head-on.

If the automobile 1 is hit by another automobile, the collision sensors 14 and 15 detect the impact and the airbag 11 is inflated. With this rear-end collision, the rear seat 4
Of the occupant 3 attempts to jump out in the direction of the back door 5, but the impact received by the head of the occupant 3 is buffered by the airbag 11, and the impact received by the knee of the occupant 3 is buffered by the knee protector 8 (see FIG. 2). ).

When the vehicle 1 has a frontal collision, the collision sensor 16 senses this impact and the airbag 12 is inflated, and the head of the occupant 3 is moved by the airbag 12 to the seat 13 in the second row. It prevents collision with the headrest 13a. 1 and 2, 17 is a rear tire of the automobile 1, 18 is a front tire of the automobile 1, 19 is an occupant seated on the seat 13 in the second row, and 20 is seated on a seat in the first row. The occupant, and 21 is a steering wheel.

[0012]

As described above, according to the present invention, a rear seat on which an occupant sits rearward is provided at the rearmost portion of the interior of a vehicle, and a back door of the vehicle is provided at a position facing the rear seat. In the rear structure of the vehicle, the knee protector for protecting the knees of the occupant seated in the rear seat is attached to the back door, so that even if another vehicle collides from behind, the impact on the occupant's knees is buffered by the knee protector. As a result, the safety of the occupant can be improved. In addition to the installation of this knee protector, if an airbag is provided between the head of the occupant and the rigid member of the vehicle to protect the occupant in the event of a car collision, the safety of the occupant is further improved. Can be done.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part showing a configuration of a rear part structure of an automobile according to the present invention.

FIG. 2 is a schematic overall view of an automobile having a rear structure according to the present invention.

FIG. 3 is a rear perspective view of an automobile having a rear structure of the present invention.

FIG. 4 is a cross-sectional view taken along the line CC of FIG. 3, showing a state in which a reinforcement is attached to a back door of an automobile.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automobile 2 Cabin 4 Last seat 5 Back door 6 Hinge 8 Knee protector 9 Reinforcement 10 Bracket 11 Airbag 12 Airbag

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B60R 21/045-21/05 B60J 5/00 B60J 5/10 B60R 21/16-21/32

Claims (4)

(57) [Claims] 1. A rear structure of an automobile, wherein a rear seat on which an occupant sits rearward is provided at a rearmost portion in a cabin of the automobile, and a back door of the automobile is provided at a position opposed to the rear seat. A rear structure of an automobile, wherein a knee protector for protecting a knee of a seated occupant is attached to the back door. 2. The rear structure of a vehicle according to claim 1, wherein the back door is provided with a knee protector reinforcement extending in a vehicle width direction of the vehicle, and the knee protector is supported by the reinforcement. The rear structure of the automobile. 3. The rear structure of the vehicle according to claim 2, wherein at least a part of the knee protector is located within a closed cross section of the back door. 4. The rear structure of an automobile according to claim 1, wherein an airbag that inflates along an inner surface of the back door is attached to a ceiling of the automobile. Rear structure of the car.