JPH04358933A - Air bag system of automobile - Google Patents

Abstract

PURPOSE:To check a rider aboard at the rear seat by dint of an air without fail at a collision. CONSTITUTION:In the case where a reclining angle at a seat back 2a of a front seat 2 is adjusted, by way to example, if a rider aboard at the rear seat is being seated, whether an amount of adjustments in the reclining angle is less than the specified value or not is judged. When this reclining angle is less than the specified value, there is no influence to protection for the rider aboard at the reat seat by operation of an air back 4b, so that the front seat 2 is adjusted as required. On the other hand, if it goes beyond the specified value, the adjustment of the front seat 2 is regulated to less than the specified value, and thereby checking performance for the reat seat rider at a collision by means of the air bag is secured without fail.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention provides a front seat that is adjustable by a seat adjustment means, and an adjustment amount of which is controlled by an adjustment control means. The present invention relates to an airbag device for an automobile in which an airbag unit is disposed on the headrest of a front seat or the back of a seatback.

0002

[Prior Art] Generally, in a car, an airbag unit having an inflator and an airbag is installed at a predetermined location, and when a relatively large impact force is applied to the car body during a collision, etc., the airbag unit is normally folded. 2. Description of the Related Art An air bag device for a vehicle is known in which an air bag in a vehicle is inflated by the explosion of an inflator, and the inflated air bag cushions an impact force acting on an occupant in a vehicle interior to protect the occupant.

[0003] In such devices, as an automobile airbag device for protecting rear seat occupants, for example, as described in US Pat. No. 3,779,577 and the drawings, left and right front seat seats are used. It is known that an airbag unit including an inflator and an airbag is provided on the back of the seatback of a car.

0004

[Problems to be Solved by the Invention] However, with such a structure in which the airbag unit is provided on the back of the seat back of the front seat, changes in the state of the seat back of the front seat may occur. For example, by sliding the front seat in the front-rear direction and changing the front-rear position of the seat, the distance between the airbag unit and the rear seat occupant changes, making it possible for the airbag to sufficiently restrain the rear seat occupant. There may be cases where this is not possible. Further, a similar problem occurs when an airbag unit is provided in a headrest.

The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide an airbag device for an automobile that can reliably restrain rear seat occupants in the event of a collision.

[0006]

[Means for Solving the Problems] The present invention provides a front seat that is adjustable by a seat adjusting means, and an amount of adjustment of the seat adjusting means being controlled by an adjustment control means. The present invention is based on an airbag system for an automobile in which an airbag unit is disposed on the headrest of the front seat or on the back of the seatback.

The invention according to claim 1 includes a seat adjustment amount detection sensor for detecting the adjustment amount of the front seat by the seat adjustment means, and an output from the seat adjustment amount detection sensor. , an adjustment determining means for determining whether the amount of adjustment of the front seat is less than or equal to a predetermined value; The present invention is configured to include an adjustment regulating means that regulates the adjustment of the seat adjusting means by the adjustment control means when the value exceeds a predetermined value, and releases the regulation when a rear seat passenger is not seated. In this case, the seat adjustment means in the invention of claim 2 is a seatback rotation means for adjusting the amount of rotation of the seatback of the front seat; is a headrest rotating means for adjusting the amount of rotation of the headrest of the front seat, and in the invention of claim 4, it is a seat sliding means for adjusting the amount of longitudinal sliding of the front seat; In the invention of claim 5, there is provided a seat back adjusting means for adjusting the amount of vertical movement of the seat back of the front seat, and in the invention of claim 6, the seat back adjusting means adjusts the amount of vertical movement of the seat back of the front seat. This is a headrest adjustment means for adjusting the amount.

[0008] Furthermore, the invention according to claim 7 provides the following:
a seat adjustment amount detection sensor for detecting the adjustment amount by the seat adjustment means; and receiving the output of the seat adjustment amount detection sensor;
Adjustment amount calculation means for calculating the adjustment amount of the front seat; and an adjustment amount calculation means that receives the output of the adjustment amount calculation means and adjusts the rear seats and the front seats in accordance with the adjustment of the front seat. and adjustment control means that adjusts only the adjustment amount corresponding to the adjustment amount. In that case, the seat adjusting means is provided in claims 2 to 6.
Similarly to the invention of claim 8, in the invention of claim 8, the front seat seat
A seat back rotating means for adjusting the amount of rotation of a seat back of a front seat; In the tenth aspect of the invention, there is a seat sliding means for adjusting the longitudinal sliding amount of the front seat, and in the eleventh aspect of the invention, the seat sliding means is for adjusting the vertical movement amount of the seat back of the front seat. It is a seat back adjustment means,
In the invention of claim 12, the headrest adjustment means adjusts the amount of vertical movement of the headrest of the front seat.

[0009]

[Function] According to the invention of claims 1 to 6, when the rear seat occupant is seated, the amount of adjustment of the front seat is regulated to a predetermined value or less, and the distance between the airbag unit and the rear seat occupant is reduced. Within a certain range. Therefore, the position of the front seat (therefore, the airbag unit) relative to the rear seat occupant is stable, so
The airbag has good restraint performance for rear seat passengers in the event of a collision. Further, such restrictions are lifted when a rear seat passenger is not seated, and adjustments can be made in the same way as a normal seat.

According to the invention of claims 7 to 12, since the rear seat is adjusted by the adjustment amount corresponding to the adjustment amount of the front seat, the airbag unit and the rear seat occupant are The distance is always within a certain range, so the airbag's ability to restrain rear seat occupants is not compromised in the event of a collision.

[0011]

[Effects of the Invention] According to the invention of claims 1 to 6, since the amount of movement of the front seat when a rear seat occupant is seated is regulated to a predetermined value or less, the amount of movement of the front seat for the rear seat occupant is restricted. - The position of the seat (therefore, the airbag unit) is stabilized, the rear seat occupant is restrained in an excellent manner when the airbag is activated, and the rear seat occupant can be reliably protected in the event of a collision.

[0012] In the invention of claim 2, since the rear seat is moved following the movement of the front seat, the interaction between the rear seat occupant and the front seat (therefore, the airbag unit) is improved. Since the distance is maintained substantially constant, the performance of restraining the rear seat occupant is excellent when the airbag is activated, and the rear seat occupant can be reliably protected in the event of a collision.

[0013]

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIG. 1, which shows a part of the roof of a car cut away, 1 is a car, 2, 2 are left and right front seats, seat backs 2a, 2a, seat cushions 2b, 2
b and headrests 2c, 2c. An airbag unit 4 is installed inside the headrest 2c. 5, 5 are the left and right rear seats, seat backs 5a, 5a
, seat cushions 5b, 5b and headrest 5c,
5c, and is ON when an occupant is seated approximately in the center of the seat back 5a and seat cushion 5b.
Activated sheet sensors 6A and 6B are embedded.

Furthermore, a pair of acceleration-sensitive first impact detection sensors 7, 7 are located at the front end of the vehicle body, and another pair of acceleration-sensitive second impact detection sensors are located on the vehicle body near the instrument panel 6. Sensors 8, 8 are provided, respectively. The first impact detection sensor 7 is set to have a relatively low sensitivity and turns ON even with a small impact force, while the second impact detection sensor 8 is set to a relatively high sensitivity and the impact force at the time of a collision is equal to or higher than a predetermined value. It is designed to turn ON when the

As shown in FIGS. 2 and 3, the airbag unit 4 includes an inner casing member 21 made of metal and having an opening 21a that is rectangular in rear view, and an outer casing member 22 made of synthetic resin and U-shaped in side view. A casing 20 consisting of
The inflator 4a is provided in the casing 20, and the airbag 4b is housed in the casing 20 in a folded state.

The outer casing member 22 is formed of a flexible membrane material, and is fitted and fixed onto the inner casing member 21 so as to close the opening 21a of the inner casing member 21 with a vertical wall portion 22a. The lower wall portion is fixed to the inner casing member 21 with a plurality of screws 24, and the upper, lower, left and right edges of the airbag 4b are fixed to the inner casing member 21 in an airtight manner with screws 24.

Perforations 22b are formed in the vertical wall portion 22a of the outer casing member 22, as shown by dashed lines in FIG. are provided with brackets 25, 25 having bolt holes 25a, 25a, respectively.

The inflator 4a is fixed to the left and right side walls of the inner casing member 21, and within the inflator 4a is an ignition device (not shown) that is activated by an output signal from a control unit 10, which will be described later. When the airbag 4b is installed inside and the ignition device is activated, a large amount of gas is instantaneously generated from the inflator 4a, and the pressure of the gas pierces the perforation 22b of the outer casing member 22, causing the airbag 4b to inflate and deploy. There is. A plurality of vent holes are formed in the air bag 4b, and by discharging gas through the vent holes, the air bag 15 is deflated at a predetermined time after being inflated and deployed.

[0020] When the car collides with an impact force exceeding a predetermined value, a collision is determined based on signals from the first impact detection sensor 7 and the second impact detection sensor 8, and the airbag unit 4 is activated at a predetermined timing. The airbag unit 4 corresponds to the rear seat 5 where an occupant is seated.
The airbag 4b inflates and deploys to restrain the occupant. Therefore, the occupant is prevented from colliding with the seat bag 2a of the front seat 2. The airbag 4b is attached to the rear seat 5.
Since the headrest 2c is inflated and deployed at a position corresponding to the chest of the occupant seated on the seat, the head of the occupant can be reliably restrained. Thereafter, the airbag 4b deflates as gas escapes from the vent hole.

Further, the front seat 2 is slidable in the longitudinal direction of the vehicle body. Specifically, for example, Figure 4
It can be slid by a slide mechanism shown in the figure. The seat cushion 2b of the front seat 2 is
A pair of lower rails 31, 31 are disposed in parallel on the left and right side edges of the seat cushion 2b in the longitudinal direction of the vehicle, and are supported by an elastic support member 32 that supports the front and rear ends of the lower rails 31. Each lower rail 31 is fixed to a floor panel.

The lower rail 31 is formed by integrally molding flange portions along both sides of the upper end of the groove-shaped cross section, and each lower rail 31 has a C-shaped flange portion so as to cover the upper side surface and both flange portions. Upper rails 33 in the cross section are engaged to be slidable back and forth via bearings and rollers, and the seat cushion 2b of the front seat 2 is fixedly supported on the pair of left and right upper rails 33. has been done.

In order to drive the upper rail 33 in the longitudinal direction of the vehicle body, threaded shafts 34 are disposed in parallel to each other along the entire length of the lower rail 31 near the inner side of each lower rail 31. Both ends of each screw shaft 34 are elastically supported via each elastic support member 32.

Furthermore, a box-shaped gear attachment portion 35 is provided inside the longitudinally intermediate portion of each of the upper rails 33, and a nut is screwed onto the threaded shaft 34 within the gear attachment portion 35. Gears are screwed onto the front and rear end surfaces of this nut, and a rotational transmission shaft 36 for rotationally driving the nut is installed between the gear mounting portions 35 of the left and right upper rails 33. A worm gear provided at the end meshes with each nut to enable rotation transmission, and the rotation transmission shaft 3
Both ends of the shaft 6 are pivotally supported by a pair of left and right upper rails 33, respectively.

A slide motor 37 for rotationally driving the rotational transmission shaft 36 is interposed on the shaft of the rotational transmission shaft 36, and this slide motor 37 is connected to a fixed member through which the rotational transmission shaft 36 is inserted. At 38, it is non-rotatably connected to the side wall of the gear attachment part 35.

[0026] Also, the seat back 2 of the front seat 2
b is rotatable in the longitudinal direction of the vehicle by a knuckle motor 44, and its mechanism will be explained with reference to FIG.

A fixed arm 41 is attached to the seat cushion 2a of the front seat 2, and a tilting arm 42 is attached to the seat back 2b. , a seat back drive mechanism 43 is provided.

The seat back drive mechanism 43 rotates in the forward direction,
A worm 45 connected to the main shaft end of a knuckle motor 44 that rotates in reverse meshes with a worm gear 46 pivotally supported by a fixed arm 41, and a gear portion on the opposite side of the worm gear 46 A displacement gear 47 is meshed with. This displacement gear 47
is equipped with a large-diameter gear 48 and a small-diameter gear 49, and is pivotally supported by a tilting arm 42, and the large-diameter gear 48 is connected to the worm gear 4.
6, and a small diameter gear 49 meshes with an arcuate gear 50 formed on the fixed arm 41. This circular arc gear 50 is
A gear is formed on one side of an arc-shaped long hole, and a displacement gear 47 is formed.
is provided so as to be displaceable on the arc line.

As a result, based on the output of the knuckle motor 44, the displacement gear 47 rotates and is displaced on an arc line along the arc gear 50 with the axis of the worm gear 46 as a fulcrum. Due to the arcuate displacement, the seat back 2b can be freely tilted in the longitudinal direction of the vehicle via the tilting arm 42 integrated with the displacement gear 47.

Although not specifically shown in the drawings, the rear seat 5 is also slidable in the longitudinal direction of the vehicle and reclined, similarly to the front seat 2. In addition, both the front seat 2 and the rear seat 5 are equipped with a motor 6.
1,61A ((see FIGS. 13 and 16)), the vehicle body can be raised and lowered in the vertical direction via a link mechanism or the like.

Further, as shown in FIG. 6, the headrest 2c has a gear 51 fixed to the headrest 2c meshing with a gear portion 53 formed at the upper end of the headrest pole 23. A gear 55 rotated by the motor 54 is engaged with the headrest 2c, so that the headrest 2c is rotated in the longitudinal direction of the vehicle body by driving the motor 54. At the same time, headrest 2c
A toothed portion 56 is formed on the headrest pole 23, a gear 57 is meshed with the toothed portion 56, and a motor 5 is connected to the gear 57.
A gear 59 rotationally driven by the motor 8 is engaged with the motor.
By rotationally driving the motor 58, the headrest 2c can be raised and lowered relative to the seatback 2a (seatback frame 60).

In order to detect the state of the front seat 2, various sensors 71, 76, 81, 91, and 95 are provided, and these sensors are constructed as shown below.

(1) Seat back 2a of front seat 2
Seat back rotation angle detection sensor 71 that detects the rotation angle of
As shown in FIG. 8, the seat back detects the rotation angle (reclining angle) of the seat back 2a with respect to the hinge means 72 that rotatably connects the seat back 2a and the seat cushion 2b. A rotation angle detection sensor 71 is provided.

This sensor 71 is connected to the seat cushion 2b.
A fixed terminal 71a is provided on the side hinge member 72a, and the seat
The seat back 2a side hinge member 72b is attached to the seat back 2a side hinge member 72b.
A movable terminal 7 arranged on a circumference centered on the rotation center of
1b is provided, and as the seat back 2a rotates, the movable terminal 71b rotates, and the point of contact with the fixed terminal 71a changes according to the rotation angle of the seat back 2a. Since the resistance value between the terminals 71b changes, the change is read by the resistance detector 71c. Since the change in resistance corresponds to the rotation angle of the seat back 2a, the rotation angle of the seat back 2a is detected through the change in resistance.

(2) Seat slide amount detection sensor 76 for detecting the amount of front and back sliding of the front seat. As shown in FIG. 9, the lower rail is supported on the floor side via support members 77. A fixed terminal 76a is provided on the upper rail 78, and a movable terminal 76b is provided on the upper rail 79, which slides in the longitudinal direction with respect to the lower rail 78.The change in resistance between them is detected by the resistance detector 76c, and the amount of longitudinal sliding is detected. It is designed to detect.

(3) Seat back vertical movement detection sensor 81 for detecting the vertical movement of the seat back 2a As shown in FIG. A fixed terminal 81a is provided on the upper rail 84 which is slidable against the upper rail 84.
In addition, a movable terminal 81b is provided on a seat cushion (for example, a seat cushion frame 86) that moves up and down via links 85, 85, and a change in resistance between them is detected by a resistance detector 81c. The vertical amount of the seat cushion 2b and therefore the seat back is detected.

(4) Headrest rotation angle detection sensor 91 for detecting the rotation angle of the headrest 2c As shown in FIG. 11, a fixed terminal is attached to the upper end of the headrest pole 23, which is the rotation center of the headrest 2c 9
A movable terminal 91b is provided on the headrest 2c side (for example, the headrest frame) and is arranged on a circumference around the rotation center.
The contact point between the fixed terminal 91a and the movable terminal 91b changes due to the rotation of c, and the resistance value between both terminals 91a and 91b changes accordingly.By reading this change with the resistance detector 91c, the contact point between the fixed terminal 91a and the movable terminal 91b changes. It is designed to detect the rotation angle.

(5) Headrest vertical movement detection sensor 95 for detecting the vertical movement of the headrest 2c As shown in FIG. A terminal 91a is provided, a movable terminal 91b is provided in which the fixed terminal 91a contacts the headrest pole 23 of the headrest 2c, and the change in resistance between them is detected by the resistance detector 91c to determine the vertical amount of the headrest 2c. It is designed to be detected.

[0039] Each of the above-mentioned sensors 71, 76, 81,
Signals from 91 and 95 are transmitted to the control unit 100, and the control unit 100 controls the adjustment amount of the front seat 2, that is, the motor, when the rear seat occupant is seated.
The drive amount of the motors 37, 44, 54, 58, and 61 is regulated to a predetermined value or less, and the regulation is released when no passenger is seated in the rear seat, so that it can be freely adjusted.

That is, as shown in FIGS. 13 and 14, the control unit 100 controls the seat slide amount,
Reclining angle of seat back 2a, headrest 2
In response to a signal from the adjustment operation means 101 that adjusts the rotation angle of the headrest 2c, the amount of elevation of the headrest 2c, the amount of elevation of the front seat 2, etc., the motor is operated according to the amount of adjustment operation of the front seat 2. Ta 37
, 44, 54, 58, 61 to adjust the front seat 2, and various sensors 71, 76.
, 81, 91, 95 and determines whether the amount of adjustment of the front seat 2 is below a predetermined value; Occupancy determination means 104 determines whether or not an occupant is seated on the seat 5; and adjustment control means receives signals from the adjustment determination means 103 and occupancy determination means 104 when the adjustment amount exceeds a predetermined value. and an adjustment regulating means 105 for regulating the adjustment of the front seat 2 by the front seat 102. Note that the adjustment control means 102 controls the motors 37, 44, 54, 58, 61.
is driven to adjust the amount of seat sliding, the reclining angle of the seatback 2a, the rotation angle of the headrest 2c, the amount of elevation of the headrest 2c, and the amount of elevation of the seat 2. Further, it is also possible to control the adjustment amount of the front seat 2 to always be equal to or less than a predetermined value without providing the seating determination means 104, that is, regardless of whether or not a rear seat passenger is seated. Therefore, control by the control unit 100 is performed as shown in FIG.

When the engine starts, it is first determined whether or not the front seat 2 needs to be adjusted (step S1).

If the front seat 2 has been adjusted, it is determined whether or not an occupant is seated on the rear seat 5 (step S2); , repeat this determination.

When a passenger is seated in the rear seat 5, it is determined whether the adjustment amount is less than a predetermined value (step S3), and if it is less than the predetermined value, the airbag 4b is activated. The operation does not affect the protection of rear seat passengers, so the front seat
Adjust the pitch 2 (step S4) and return. On the other hand, if the predetermined value is exceeded, the adjustment amount of the front seat 2 is regulated to be less than the predetermined value (step S5), and the process returns. Also,
Since there is no need to regulate the amount of adjustment unless a rear seat passenger is seated, the front seat 2 is adjusted (step S4).
Return.

In the above embodiment, the amount of adjustment of the front seat 2 is regulated to be below a predetermined value, and the regulation is released when the rear seat occupant is not seated. It is also possible to follow the adjustment and adjust the rear seat 5 by an amount of adjustment corresponding to the amount of adjustment of the front seat 2.

That is, in this case, FIGS. 16 and 17
As shown in FIG. 1, the control unit 100A includes seating determination means 11 for determining whether or not a rear seat passenger is seated.
0, adjustment amount detection means 111 receives the output of the seating determination means 110 and detects the amount of adjustment of the front seat 2 when the rear seat occupant is seated; - adjustment amount calculation means 113 for calculating the adjustment amount of the front seat 2;
Motor 37 corresponding to motors 37, 76, 81, 91, 95
A, 76A, 81A, 91A, and 95A are driven to adjust the rear seat 5, and follow the adjustment of the front seat 2 to adjust the adjustment amount corresponding to the adjustment amount of the front seat 2. and adjustment control means 114 for controlling the adjustment so as to adjust the amount.

[0046] Therefore, the control unit 100
According to the control by A, as shown in FIG. 18, when starting, it is determined whether or not the front seat 2 is to be adjusted (step S11), and the front seat 2 is adjusted. If it is a seat adjustment, the front seat 2 is adjusted (step S12), whereas if the front seat 2 is not adjusted, the process returns.

After adjusting the front seat 2, it is determined whether or not the rear seat passenger is seated (step S13). If the rear seat passenger is seated, the seat of the front seat 2 is adjusted. - detects the seat adjustment amount (step S14), follows the adjustment, adjusts the rear seat 5 by the adjustment amount corresponding to the adjustment amount of the front seat 2 (step S15), and If the occupant is not seated,
Return as is.

Therefore, the distance between the airbag unit 4 and the rear seat occupant is always maintained at a predetermined distance when the rear seat occupant is seated, and the airbag unit 4 functions effectively.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view of an automobile.

FIG. 2 is a front view of the airbag unit.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is a perspective view of the seat slide mechanism of the front seat.

FIG. 5 is a perspective view of the reclining mechanism of the front seat.

FIG. 6 is a schematic diagram of a headrest rotation mechanism.

FIG. 7 is a schematic diagram of a headrest lifting and lowering mechanism.

FIG. 8 is an explanatory diagram of seatback reclining angle detection means.

FIG. 9 is an explanatory diagram of a slide movement amount detecting means for the front seat.

FIG. 10 is an explanatory diagram of a means for detecting the amount of elevation of the front seat.

FIG. 11 is an explanatory diagram of headrest rotation amount detection means.

FIG. 12 is an explanatory diagram of headrest elevation detection means.

FIG. 13 is a diagram showing the relationship between the front and rear seats and the control unit.

FIG. 14 is a block diagram of a control unit.

FIG. 15 is a flowchart showing the flow of control.

FIG. 16 is a diagram similar to FIG. 13 for another embodiment.

FIG. 17 is a diagram similar to FIG. 14 for another embodiment.

FIG. 18 is a diagram similar to FIG. 15 for another embodiment.

[Explanation of symbols]

1 Car 2 Front seat 2a Seat back 2b Headrest 4 Airbag unit 37 Slide motor (seat sliding means) 4
4 Knuckle motor (seat back rotation means) 5
4 Motor (headrest rotation means) 58
Motor (headrest adjustment means) 61 Motor (seatback adjustment means) 71 Seatback rotation angle sensor (seat adjustment amount detection sensor) 76 Seat slide amount detection sensor (seat adjustment amount Detection sensor) 81 Seat back vertical amount detection sensor (Seat adjustment amount detection sensor) 91 Headrest rotation angle detection sensor (Seat adjustment amount detection sensor) 95 Headrest vertical movement detection sensor (Seat adjustment amount detection sensor ) 100 Control unit 100A Control unit 102 Adjustment control means 103 Adjustment determination means 105 Adjustment regulation means 113 Adjustment amount calculation means 114 Adjustment control means

Claims (12)

[Claims] Claim 1: A front seat is provided so as to be adjustable by a seat adjustment means, and the amount of adjustment of the seat adjustment means is controlled by an adjustment control means. - Seat adjustment amount detection for detecting the amount of adjustment by the seat adjustment means of the front seat in an airbag system for a car in which an airbag unit is installed on the headrest or the back of the seatback. a sensor, an adjustment determination means that receives an output from the seat adjustment amount detection sensor and determines whether the adjustment amount of the front seat seat is less than or equal to a predetermined value; and an adjustment determination means that receives the output of the adjustment determination means. , when the rear seat occupant is seated, the adjustment of the seat adjustment means by the adjustment control means is regulated when the amount of adjustment of the front seat seat exceeds a predetermined value, and the regulation is released when the rear seat occupant is not seated. An airbag device for an automobile, comprising: an adjustment regulating means. Claim 2: The seat adjustment means includes a seat adjustment means for adjusting the seat of the front seat.
2. The airbag device for an automobile according to claim 1, wherein the airbag device is a seatback rotating means for adjusting the amount of rotation of the seatback. 3. The airbag system for an automobile according to claim 1, wherein the seat adjustment means is a headrest rotation means for adjusting the amount of rotation of the headrest of the front seat. 4. An airbag system for an automobile according to claim 1, wherein the seat adjusting means is a seat sliding means for adjusting the amount of longitudinal sliding of the front seat. Claim 5: The seat adjusting means is configured to adjust the seat of the front seat.
2. The airbag device for an automobile according to claim 1, further comprising seatback adjusting means for adjusting the amount of vertical movement of the seatback. 6. The airbag system for an automobile according to claim 1, wherein the seat adjustment means is a headrest adjustment means for adjusting the amount of vertical movement of the headrest of the front seat. 7. A front seat is provided so as to be adjustable by a seat adjustment means, the amount of adjustment of the seat adjustment means is controlled by an adjustment control means, and the front seat is adjustable. - Seat adjustment amount detection for detecting the amount of adjustment by the seat adjustment means of the front seat in an airbag system for a car in which an airbag unit is installed on the headrest or the back of the seatback. a sensor, an adjustment amount calculation means for receiving the output of the seat adjustment amount detection sensor and calculating an adjustment amount of the front seat, and receiving the output of the adjustment amount calculation means;
An airbag device for an automobile, comprising adjustment control means for adjusting a rear seat by an adjustment amount corresponding to the adjustment amount of the front seat in accordance with the adjustment of the front seat. . [Claim 8] The seat adjusting means is configured to adjust the seat of the front seat.
8. The airbag device for an automobile according to claim 7, wherein the airbag device is a seatback rotating means for adjusting the amount of rotation of the seatback. 9. The airbag system for an automobile according to claim 7, wherein the seat adjustment means is a headrest rotation means for adjusting the amount of rotation of the headrest of the front seat. 10. The airbag system for an automobile according to claim 7, wherein the seat adjusting means is a seat sliding means for adjusting the sliding amount of the front seat in the longitudinal direction. 11. The airbag system for an automobile according to claim 7, wherein the seat adjusting means is a seat back lifting means for adjusting the amount of vertical movement of the seat back of the front seat. 12. An airbag system for an automobile according to claim 7, wherein the seat adjusting means is a headrest lifting means for adjusting the amount of vertical movement of the headrest of the front seat.