JP5045204B2 - Airbag device for vehicle - Google Patents

Description

  In the present invention, a front seat is disposed on the rear side of an instrument panel provided in a front part of a passenger compartment, and a rear seat on which a plurality of passengers can be seated is disposed on an oblique rear side of the front seat. The present invention relates to a vehicle airbag device that protects a passenger in a rear seat in a installed vehicle.

In recent years, due to demands such as reducing the fuel consumption of a vehicle, it has been required to form a vehicle body that is lightweight and compact. However, in such a vehicle, a plurality of passengers are provided in the vehicle compartment while having a compact configuration. A device for securing a seatable space is required. For example, in Patent Document 1 described below, a front seat, which is a driver seat, is disposed at the center in the vehicle width direction in a vehicle interior, and a plurality of rear seats are disposed on the rear side thereof, thereby reducing the size of the vehicle body. It has been attempted to secure a space in which a plurality of passengers can be seated in a passenger compartment while being converted.
JP 7-156807 A

  As disclosed in Patent Document 1 above, a front seat made up of a driver's seat is disposed in the center of the vehicle interior in the vehicle width direction, and a rear seat is arranged obliquely behind the front seat. In the installed vehicle, since a wide space is formed in the front part of the rear seat, the front view of the occupant seated in the rear seat is ensured well, and an excellent living environment is obtained. There is. However, since the front seat made up of the driver's seat or the passenger seat is not positioned in front of the rear seat, the forward movement of the occupant seated in the rear seat is prevented when the vehicle is collided. In addition to being restricted by the seat, it is difficult to install an airbag device for protecting the occupant, and it is desired to be able to hold the occupant of the rear seat in a stable seating state. It was.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle airbag device that can effectively protect an occupant seated on a rear seat. .

According to the first aspect of the present invention, an instrument panel is installed in a front part of a vehicle interior so as to extend in the vehicle width direction, and a front seat is disposed on the rear side of the instrument panel. In the vehicle in which a rear seat that can be seated by a plurality of passengers is disposed on the rear side of the seat, the instrument panel is seated on the front seat by unfolding so as to cover the front portion of the front seat. Provided is an airbag device having a front seat airbag portion that protects the occupant and a rear seat airbag portion that protects the occupant seated on the rear seat by deploying so as to cover the front portion of the rear seat. The front seat airbag portion and the rear seat airbag portion are integrally formed .

According to a second aspect of the present invention, in the vehicle airbag device according to the first aspect, a recess for avoiding interference with a steering wheel is formed in the front seat airbag portion .

According to a third aspect of the present invention, in the vehicle airbag device according to the first or second aspect, a front row seat including a driver's seat is disposed at a center portion in the vehicle width direction on the floor panel. A pair of left and right rear seats are disposed on the rear side, and the airbag device includes a pair of left and right rear seat airbag portions that protect passengers seated on the left and right rear seats, respectively .

According to a fourth aspect of the present invention , an instrument panel is installed in a front part of a vehicle interior so as to extend in the vehicle width direction, and a front seat is disposed on the rear side of the instrument panel. In the vehicle in which a rear seat, on which a plurality of passengers can be seated, is disposed obliquely rearward of the vehicle, the instrument panel includes a front seat airbag portion that protects the passenger seated on the front seat, and a rear seat A rear seat airbag portion that protects a passenger seated on the seat, and the front seat airbag portion and the rear seat airbag portion are integrally formed, the front seat airbag portion, A recess for avoiding interference with the steering wheel is formed.

According to a fifth aspect of the present invention, in the vehicle airbag device according to the fourth aspect , a front row seat including a driver's seat is disposed at the center in the vehicle width direction on the floor panel, and obliquely rearward thereof. A pair of left and right rear seats are disposed on the left and right, and the airbag device includes a pair of left and right rear seat airbag portions that protect passengers seated on the left and right rear seats.

In the invention according to claim 1, a front seat is disposed on the rear side of the instrument panel, and a rear seat on which a plurality of passengers can be seated is disposed on the oblique rear side of the front seat. Accordingly, wide space in front portion of the rear seat is formed, along with the forward visibility of an occupant seated in the rear seat can be secured satisfactorily, in a vehicle that is configured so as to obtain an excellent residential environment, the By deploying the front seat airbag portion and the rear seat airbag portion provided on the instrument panel in the event of a vehicle collision, an occupant seated on the front seat consisting of the driver's seat, There is an advantage that it is possible to protect each of the passengers seated on the rear seats provided. In addition, since the front seat airbag portion that protects the occupant seated on the front seat and the rear seat airbag portion that protects the occupant seated on the rear seat are integrally formed, the air bag is supplied from the inflator. By deploying the front seat airbag portion and the rear seat airbag portion substantially at the same time without any time difference using the inflation gas, there is an advantage that the front seat passenger and the rear seat passenger can be effectively protected.

In the inventions according to claims 2 and 4, since the recessed portion for avoiding interference with the steering wheel is formed in the front seat airbag portion, when the airbag installed on the instrument panel is deployed, this airbag It is possible to effectively prevent the occurrence of a situation in which the deployability is hindered by interfering with the steering wheel, and the airbag can be smoothly deployed with a simple configuration.

In the inventions according to claims 3 and 5, since the space portions formed on the left and right side portions of the front seat can be used as storage spaces for luggage, a luggage room is provided on the rear side of the vehicle compartment. As in the case, it is possible to secure a sufficient space for storing luggage for passengers without causing problems such as an increase in the longitudinal dimension of the vehicle body or a deterioration in the design of the vehicle body, and the above The pair of left and right rear seat airbag portions can effectively protect the occupants seated in the rear seat.

  1 to 3 show a vehicle provided with a vehicle airbag device according to the present invention, and a side opening of the vehicle is formed with an opening for getting on and off by side doors 1 and 1, and the vehicle An instrument panel 2 is installed in the front part of the room so as to extend in the vehicle width direction. A steering wheel 3 is installed at the center of the instrument panel 2 in the vehicle width direction, and a front seat 5 made up of a driver's seat is disposed on a floor panel 4 located on the rear side. A pair of left and right rear seats 6, 6 are disposed obliquely rearward of the front seat 5, so that the rear seats 6, 6 having a larger dimension in the vehicle width direction than the front seat 5 are installed. The part is formed.

  The front seat 5 includes a seat cushion 7 that serves as a seat for a passenger, a seat back 8 erected at the rear end, and a pair of left and right sliders 9, 9 disposed below the seat cushion 7. And the slider 9 is slid along the pair of left and right seat rails 10 installed at the front center of the floor panel 4 so that the front-rear position of the front seat 5 can be adjusted. It is configured.

  The rear seats 6, 6 include a seat cushion 11, a seat back 12 erected at the rear end thereof, and a pair of left and right sliders 13, 13 disposed below the seat cushion 11. When the sliders 13 and 13 are slid along the pair of left and right seat rails 15 and 15 installed on the kick-up portion 14 formed on the rear portion of the floor panel 4, the rear seats 6 and 6 The front-rear position of is adjustable.

  As shown in FIG. 3, an instrument panel member 16 made of a pipe material or the like is installed in the instrument panel 2 so as to extend in the vehicle width direction, and a steering mechanism 17 is attached to the instrument panel member 16 outside the figure. Is supported through. Further, an airbag device 18 is attached above the instrument panel member 16 via a mounting bracket 19. The airbag device 18 includes an inflator 21 disposed in a housing case 20 having an open upper surface portion, and an airbag 22 disposed in a folded state above the inflator 21 and includes a collision sensor (not shown). When the vehicle collision is detected, the inflator 21 is operated, and the generated inflation gas is supplied to the airbag 22 so that the airbag 22 is deployed.

  The front wall portion 20a and the rear wall portion 20b of the housing case 20 are installed in an inclined state so that the upper end portions are located on the rear side of the vehicle body, so that the airbag 22 is placed on the upper rear side when deployed, which will be described later. The guide surface which guides toward is comprised. Further, a closing lid 23 corresponding to the installation portion of the airbag 22 is installed on the upper wall portion of the instrument panel 2, and this closing lid 23 swings with the front side portion as a fulcrum when the airbag 22 is deployed. It is configured to be in an open state by dynamic displacement (see phantom line in FIG. 3).

  As shown in FIGS. 4 and 5, the airbag 22 includes a front seat airbag portion 24 that extends so as to cover the front portion of the front seat 5 in the event of a vehicle collision, and the front surfaces of the rear seats 6 and 6. A pair of left and right rear seat airbag portions 25, 25 that expand so as to cover the front portion, and these front seat airbag portion 24 and rear seat airbag portions 25, 25 are integrally formed. Thus, it is configured to be in a U-shaped state when viewed from the plane.

  The front seat airbag portion 24 covers the upper wall portion of the instrument panel 2 and is deployed so as to extend to the rear side of the vehicle body while avoiding the installation portion of the steering wheel 3. It is comprised so that a part may be covered. That is, the front seat airbag portion 24 is set so that the width dimension when deployed is substantially the same as the width dimension of the front seat seat 5, and the rear end portion is positioned at the front portion of the seat back of the front seat seat 5. The front and rear dimensions thereof are set, and the recess 26 corresponding to the installation portion of the steering wheel 3 is formed on the lower surface, so that the seat 5 is seated on the front seat 5 while avoiding interference with the steering wheel 3. It is comprised so that it may expand | deploy to the position which can control a passenger | crew's back-and-forth movement.

  On the other hand, the widths of the rear seat airbag portions 25, 25 when set are substantially the same as the width dimensions of the rear seat seats 6, 6, respectively, and the rear end portions are rear seat seats 6, 6 The front and rear dimensions are set so as to be positioned in the front part of the occupant seated in the vehicle, and the rear side of the vehicle body is developed along the side wall part of the vehicle body, thereby avoiding interference with the passenger in the front seat 5. In this state, the occupant seated on the rear seats 6 and 6 is configured to be deployed to a position where the anteroposterior movement can be restricted.

  Further, as shown in FIG. 6, a rear pillar 28 is disposed at a substantially central portion in the vehicle width direction on the rear surface portion of the vehicle body, and continuously between the rear pillar 28 and the side doors 1 and 1. A rear window 29 is disposed so as to cover the rear window 29 so that a rear view on both the left and right sides of the vehicle is secured without being obstructed by the rear pillar 28. A rear end panel 46 is disposed at a rear end portion of the vehicle body, that is, a rear end portion of the floor panel 4 at a predetermined distance from an installation portion of the rear seat 6 (see FIG. 7). A rear bumper 30 is installed on the lower rear side of the panel 46 so as to extend in the vehicle width direction.

  As shown in FIGS. 7 to 10, the left and right rear seats are arranged between the rear end panel 46 and the rear seats 6 and 6 in accordance with the load input to the rear bumper 30 at the time of rear collision of the vehicle. A pair of left and right rear seat drive means 31 is provided for driving the seats 6 and 6 and moving them along the seat rail 15 to the front side of the vehicle body. The rear seat drive means 31 has a pair of left and right cylindrical bodies 32 made of a round pipe material or the like whose rear end portion is connected to the installation portion of the rear bumper 30, and a front end thereof disposed in the cylindrical body 32. A partition wall 33 fixed to a portion located on the rear side by a predetermined distance from the section, a buffer member 34 made of a compression spring or the like disposed on the front side, and a pusher 35 disposed on the front side. The pusher 35 abuts against the lock lever 36 of the rear seat 6 at the time of a rear collision of the vehicle, which will be described later, so that the pusher 35 is pushed forward on the vehicle body.

  The lock lever 36 is provided at a drive part 37 formed of a rod-like body extending in the vehicle width direction, a grip part 38 fixed to the front surface of the center part of the drive part 37, and left and right end parts of the drive part 37. A pivot part 39 whose end is pivotally supported by the sliders 13, 13 of the rear seat 6, a lock part 40 projecting from the lower surface of the pivot part 39, and the lock part 40 are attached to the following lock positions. And an urging means made of a spring member or the like (not shown) for holding the rear seat 6 in a restrained state.

  According to the urging force of the urging means, the lock portion 40 is engaged with one of the plurality of locking holes 41 formed in the upper wall portion of the seat rail 15, so that the sliders 13, 13 are engaged. Slide displacement is restricted and the back and forth movement of the rear seat 6 is restricted. Further, the occupant seated on the rear seat 6 grips the grip portion 38 of the lock lever 36, and the lock lever 40 moves away from the locking hole 41 against the biasing force of the biasing means. By swinging and displacing 36, the restriction state of the lock lever 36 that restrains the back and forth movement of the rear seat 6 is released, and the sliders 13 and 13 are slid along the seat rails 15 and 15, that is, It is allowed to adjust the front-rear position of the rear seat 6 according to the passenger's preference.

  The pusher 35 of the rear seat driving means 31 is inserted into the front end portion of the cylindrical body 32 and supported so as to be slidable, and the front side along the lower surface of the driving portion 37 of the lock lever 36. Is formed in a fork shape having a pressing portion 44 that is opposed to the upper surface of the driving unit 37 and is positioned above the upper surface of the driving unit 37. 45 is formed.

  Normally, the presser portion 44 and the like of the pusher 35 are disposed so as to be located rearward by a predetermined distance with respect to the drive portion 37 of the lock lever 36, whereby the lock lever 36 and the rear seat drive means 31 are arranged. They are separated from each other. At the time of a rear collision of the vehicle, the pusher 35 is displaced to the front side of the vehicle body, and the base end of the pusher 35 contacts the drive unit 37 of the lock lever 36, so that the drive unit 37 is pushed upward. As a result, the locking portion 40 of the lock lever 36 is disengaged from the locking hole 41 to release the restrained state of the rear seat 6 and the rear seat 6 is moved forward of the vehicle body via the rear seat drive means 31. It is configured to be pushed to the side.

  That is, as shown in FIG. 11, a large impact load B is applied to cause the rear bumper 30 to move forward to the vehicle body due to a rear collision or the like in which another vehicle A collides with the rear end of the vehicle. Then, in response to the impact load B, the rear portion of the floor panel 4 is compressed and deformed, and the cylindrical body 32 of the rear seat drive means 31 is pushed by the rear bumper 30 and the rear end panel 46 to the front side. And the base end portions of the receiving portion 44 and the pressing portion 44 come into contact with the driving portion 38 of the lock lever 36. When the impact load B at the time of occurrence of the rear collision or the like is large, the shock load is absorbed by the buffer member 34 of the rear seat drive means 31 being compressed, and the shaft portion 42 of the pusher 35 is the cylindrical body 32. The drive portion 37 of the lock lever 36 is pressed to the upper front side by the inclined surface 45 of the pusher 35.

  As shown in FIGS. 12 and 13, the lock lever 36 is oscillated and displaced in the direction in which the lock portion 40 is separated from the upper wall portion of the seat rail 15 having the locking hole 41 according to the push-up force of the pusher 35. The restraint state of the rear seats 6, 6 by the lock lever 36 is released, and a biasing force that biases the slider 13 of the rear seats 6, 6 toward the upper front side is input via the lock lever 36. . As a result, the lower portion 13a of the slider 13 composed of the rolling roller 15a and the like disposed in the seat rail 15 is in contact with the lower surface of the upper wall portion of the seat rail 15, and as shown in FIG. Is pushed together with the slider 13 toward the front side of the vehicle body and moves forward. As a result, the influence of deformation of the rear end of the vehicle body in response to an impact load B such as when another vehicle A collides with the rear end of the vehicle affects the occupant seated in the rear seat 6. It can be effectively prevented.

  Further, when the vehicle collides, the inflator 21 of the airbag device 18 disposed on the instrument panel 2 is operated and the inflation gas of the inflator 21 is supplied to the airbag 22, whereby the closing lid 23. Is opened, and the airbag 22 is deployed along the front wall portion 20a and the rear wall portion 20b of the housing case 20. The front seat airbag portion 24 and the pair of left and right rear seat airbag portions 25, 25 constituting the airbag 22 are deployed at substantially the same time. And the front seats of the left and right rear seats 6, 6 are covered by the rear seat airbag portions 25, 25, so that the occupant seated in the front seat 5 and the rear seats 6, 6 can 22 is protected.

  As described above, the instrument panel 2 is installed in the front part of the vehicle interior so as to extend in the vehicle width direction, and the front seat 5 is disposed on the rear side of the center of the instrument panel 2 in the vehicle width direction. By arranging the rear seats 6 and 6 on which the plurality of passengers can sit on the obliquely rear side of the front seat 5, a wide space is formed in front of the rear seats 6 and 6. In the vehicle configured to ensure a good front view of the occupants seated in 6 and 6 and to obtain an excellent living environment, the rear seat is deployed on the instrument panel 2 when the vehicle collides. When the airbag device 18 including the airbag 22 that protects the occupant seated in the seats 6 and 6 is provided, the front seat including the passenger seat is not located in front of the rear seats 6 and 6. In Can have, the collision of the vehicle, there is an advantage that the forward movement of the passenger seated in the rear seat 6,6 can effectively protect the occupant is regulated by the air bag 22.

Further, by providing the air bag device 18 airbag section 24 for the front seat air bag 22 as described above, when configured to protect the occupant seated before the seat 5, the air bag 22 By unfolding the occupant, it is possible to effectively protect the occupant seated in the front seat 5 including the driver's seat and the occupant seated in the rear seats 6 and 6 disposed obliquely behind the seat. Therefore, the safety of the vehicle can be further improved.

That is, the airbag 22 of the airbag device 18 has a front seat airbag portion 24 that protects an occupant seated in the front seat 5, and a rear seat air that protects the occupant seated in the rear seats 6 and 6. Since the bag portions 25 and 25 are provided and the front seat airbag portion 24 and the rear seat airbag portions 25 and 25 are integrally formed, the inflation gas supplied from the inflator 21 causes the front seat air. By deploying the bag portion 24 and the rear seat airbag portions 25, 25 almost simultaneously without any time difference, there is an advantage that the passengers in the front seat 5 and the passengers in the rear seats 6, 6 can be protected effectively. .

  Moreover, in the said embodiment, since the recessed part 26 which avoids interference with the steering wheel 3 was formed in the airbag part 24 for front seats, when developing the airbag 22 installed in the said instrument panel 2, this When the airbag 22 is deployed, it is possible to effectively prevent the occurrence of a situation in which the deployability is hindered by interference with the steering wheel 3, and the airbag 22 can be smoothly deployed with a simple configuration.

  In the above embodiment, the front seat 5 made up of the driver's seat is installed in the center of the vehicle interior in the vehicle width direction, and a pair of left and right rear seats 6 and 6 are disposed behind the front seat 5. However, the present invention is not limited to this, and various modifications are possible. For example, the front seat is disposed at a position offset to the right side or the left side in the passenger compartment, and a rear seat is disposed on the rear side and the oblique rear side, and the instrument panel 2 is subjected to a vehicle collision. It is also possible to adopt a structure in which an airbag device that protects an occupant seated on the rear seat disposed on the oblique rear side of the front seat is provided by deploying obliquely rearward.

  However, as shown in the above embodiment, a front seat 5 made up of a driver's seat is disposed at the center in the vehicle width direction in the passenger compartment, and a pair of left and right rear seats 6 and 6 are disposed obliquely rearward thereof. In this case, the space formed on the left and right sides of the front seat 5 can be used as a storage space for luggage and the like, as in the case where a luggage room is provided on the rear side of the passenger compartment. In addition, it is possible to secure a sufficient space for storing luggage for passengers without causing problems such as an increase in the longitudinal dimension of the vehicle body or deterioration in the design of the vehicle body. And the airbag apparatus 18 provided with the airbag part 25,25 for rear seats is arrange | positioned in the instrument panel 2 of the said vehicle, This airbag part 25,25 for rear seats is expand | deployed, The said rear seat Each of the passengers seated on the seats 6 and 6 can be effectively protected.

  In the above embodiment, the rear seat driving means 31 is provided to drive the rear seats 6 and 6 to move to the front side of the vehicle body at the time of rear collision when the other vehicle A collides with the rear end of the host vehicle. The influence caused by the deformation of the rear end portion of the vehicle body in response to the impact load when another vehicle collides with the rear end portion of the vehicle affects the occupant seated in the rear seats 6 and 6 after this. It is possible to effectively avoid the seats 6 and 6 by moving the seats 6 and 6 to the front side of the vehicle body. There exists an advantage that it can prevent effectively by the said airbag 22 expand | deployed so that the front part of the sheet | seats 6 and 6 may be covered.

It is a top view of the vehicle provided with the airbag apparatus for vehicles which concerns on this invention. It is a side view which shows the structure of the vehicle interior of the said vehicle. It is a perspective view which shows the specific structure of the said vehicle airbag. It is a top view which shows the deployment state of an airbag. It is a side view which shows the deployment state of an airbag. It is a top view which shows the external appearance structure of the said vehicle. It is side surface sectional drawing which shows the specific structure of a rear seat drive means. It is a top view which shows the specific structure of a rear seat drive means. It is side surface sectional drawing which shows the restraint state of a rear seat. It is front sectional drawing which shows the restraint state of a rear seat. It is side surface sectional drawing which shows the state which moved the backseat sheet | seat to the front side. It is side surface sectional drawing which shows the restraint cancellation | release state of a rear seat. It is front sectional drawing which shows the restraint cancellation | release state of a rear seat.

Explanation of symbols

2 Instrument panel 3 Steering wheel 4 Floor panel (vehicle compartment floor)
5 Front Seat 6 Rear Seat 18 Airbag Device 22 Airbag 24 Front Seat Airbag Part 25 Rear Seat Airbag Part

Claims (5)

An instrument panel is installed in the front part of the passenger compartment so as to extend in the vehicle width direction, a front seat is disposed on the rear side of the instrument panel, and a plurality of occupants are obliquely rearward of the front seat. In a vehicle in which a rear seat that can be seated is arranged, the instrument panel has an air for front seat that protects an occupant seated on the front seat by unfolding so as to cover the front portion of the front seat. An airbag device having a bag portion and a rear seat airbag portion that protects an occupant seated on the rear seat by deploying so as to cover the front portion of the rear seat is provided. And a rear seat airbag portion are formed integrally with each other. The vehicular airbag device according to claim 1, wherein a recess for avoiding interference with a steering wheel is formed in the front seat airbag portion. A front row seat consisting of driver seats is disposed at the center in the vehicle width direction on the floor panel, and a pair of left and right rear seats are disposed obliquely rearward thereof. vehicular airbag device according to claim 1 or 2, characterized in that an air bag unit for the right and left pair of rear seat to protect an occupant seated in the seat, respectively. An instrument panel is installed in the front part of the passenger compartment so as to extend in the vehicle width direction, a front seat is disposed on the rear side of the instrument panel, and a plurality of occupants are obliquely rearward of the front seat. In a vehicle in which a rear seat that can be seated is arranged, the instrument panel protects a front seat airbag portion that protects a passenger seated in the front seat and a passenger seated in the rear seat. A front seat airbag portion, and the front seat airbag portion and the rear seat airbag portion are integrally formed to avoid interference with the steering wheel in the front seat airbag portion. car dual airbag system you characterized in that recesses are formed. A front row seat consisting of driver seats is disposed at the center in the vehicle width direction on the floor panel, and a pair of left and right rear seats are disposed obliquely rearward thereof. The vehicle airbag device according to claim 4 , further comprising a pair of left and right rear seat airbag portions that respectively protect passengers seated on the seat.

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