JPH09183331A - Seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To develop an air back from an air bag module installed in a seat back back part of a front seat for a vehicle in the designated way so as to surely protect an occupant on a rear seat. SOLUTION: In a front seat for a vehicle, an air bag module 14 is installed freely removably in a recess part 10 formed in the back part of a seat back 2, and when an air bag module installation sensor detects installation of the air bag module 14 into the inside of the recess part 10, a reclining angle of the seat back 2 and a longitudinal slide position of a seat cushion are automatically adjusted by means of an electric mechanism on the basis of an action of a controller so that an air bag 18 inflated backward from the air bag module 14 in a collision of a vehicle can optimally protect an occupant on a rear seat.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat provided with an airbag for inflating and deploying in a vehicle interior at the time of a vehicle collision to protect an occupant.

[0002]

2. Description of the Related Art A conventional automobile seat having an air bag is equipped with an air bag module on the upper back and back of a seat back in a front seat, as illustrated in Japanese Utility Model Laid-Open No. 6-87060. At the time of collision, the airbag module is inflated and deployed from the airbag module toward the rear seat to protect the occupant of the rear seat. The deployment position and deployment direction of the airbag may change significantly, and the protection of the rear seat occupant may become unstable.

Further, in the occupant protection device disclosed in JP-A-5-310095, an airbag module is provided at the rear portion of the backrest in the front seat, and from the airbag module toward the rear seat when the vehicle collides. The position of the rear surface of the inflating airbag is regulated by a hanging strap attached at one end to the floor fixing part so that the position of the rear surface of the inflated airbag is constant regardless of the front / rear slide position of the front seat. Although the amount of inflation of the bag is changed, in this case as well, similar to the above-described conventional technique, the deployment direction of the airbag with respect to the rear seat changes greatly in accordance with the reclining angle of the backrest in the front seat. Since the inflation amount of the airbag also changes depending on the front and rear slide position, there is an unavoidable possibility that the function of protecting the rear seat occupant becomes insufficient.

[0004]

SUMMARY OF THE INVENTION According to the present invention, an airbag module mounted on a back portion of a seat back of a vehicle seat deploys an airbag in a predetermined manner in a vehicle interior at the time of a collision of a vehicle to ensure an occupant. It seeks to be able to protect.

[0005]

Therefore, a vehicle seat according to the present invention is an air bag module in which an air bag is detachably attached to a back portion of a seat back and can be deployed into a vehicle compartment in the event of a vehicle collision. And a reclining electric mechanism that adjusts the reclining angle of the seat back, a slide electric mechanism that adjusts the front-rear slide position of the seat cushion, a predetermined reclining angle range of the seat back, and a predetermined reclining angle of the seat cushion. It has a storage means for storing the front and rear slide position range, a detection means for detecting that the airbag module is mounted on the back of the seat back, and a control means for driving the reclining electric mechanism and the slide electric mechanism. However, if the detection means is the airbag module When the mounting is detected, the control means drives the reclining electric mechanism and the slide electric mechanism, respectively, and adjusts the seat back and the seat cushion within the reclining angle range and the front-rear slide position range, respectively. Is configured.

That is, when the detection means detects that the air bag module is mounted on the seat back, the control means drives the reclining electric mechanism and the slide electric mechanism, respectively, so that the seat back and the seat cushion are respectively reclined to predetermined positions. Since the adjustment is made within the angle range and within the predetermined front and rear slide position range, when the airbag module is mounted on the seat back, the airbag of the airbag module is moved from the seat back to the vehicle interior within a predetermined range when the vehicle collides. Unfold in the direction and position,
Therefore, it becomes possible to always reliably and easily protect the occupant in the vehicle compartment from the collision of the vehicle.

In the above case, if the airbag of the airbag module is deployed rearward from the seat back in a predetermined range of direction and position in the case of a vehicle collision, the occupant in the rear seat is protected from the vehicle collision. In addition, the predetermined reclining angle range and the predetermined front and rear slide position range can be correlated with each other, and the farther the seat cushion is from the occupant to be protected, the more the seat back Although the reclining angle range is narrow and the reclining angle range of the seat back is wider as the seat cushion approaches the occupant to be protected, the occupant can be sufficiently protected from a vehicle collision, or The farther the reclining angle is from the proper value, the more the seat cushion The front and rear slide position range of the seat cushion is narrowed, and the closer the reclining angle of the seat back is to an appropriate value, the wider the front and rear slide position range of the seat cushion is. It is a thing.

Further, if the air bag module is a cassette type and can be detachably mounted in a recess formed in the back portion of the seat back, the air bag module can be easily mounted and the air bag module can be installed in the seat back. The seat back can be made to look good, and the recess can be used as a storage case when the airbag module is not mounted in the recess.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention shown in the drawings will be described below. Vehicle electric front seat 1
Has a seat back 2 and a seat cushion 3. As is well known, the seat back 2 is pivotally supported at its lower part with respect to the seat cushion 3, and the seat cushion 3 can be slid back and forth by a rail (not shown) on the floor 4. When the reclining switch 5 provided near the front seat 1 is operated, the controller 6 which receives the signal drives the reclining electric mechanism 7 to set the reclining angle of the seat back 2 to the reclining switch. When the slide switch 8 provided near the front seat 1 is similarly operated while the angle is adjusted in accordance with the operation of the seat 5, the controller 6 which receives the signal drives the slide electric mechanism 9 to move the seat. The cushion 3 is adjusted to the front and rear slide position according to the operation of the slide switch 8. The front seat 1 can be electrically controlled to a preferred arbitrary state to the occupant.

A recess 10 is formed at the upper end of the back of the seat back 2, and the recess 10 is closed by a lid 12 which can be opened and closed by a hinge 11. The bottom of the recess 10 is a connector 13 connected to a controller 6. Is provided and the cassette type airbag module 14 is provided.
Is detachably mounted in the recess 10 by coupling the connector 15 to the connector 13, and the fact that the airbag module 14 is mounted in the recess 10 is input to the controller 6 by the airbag module mounting sensor 16. ing.

The air bag module 14 accommodates an inflator 17 connected to the connector 15, a folded air bag 18, and the like, and a rear surface is provided with a score line 19 that tears due to expansion of the air bag 18. 1
A frame 20 of the seat back 2 is arranged in front of the vehicle 8.

The controller 6 receives a reclining angle signal of the seat back 2 from the reclining sensor 21 and a front and rear slide position signal of the seat cushion 3 from the slide sensor 22, and an impact which is appropriately mounted on the vehicle. An impact signal received by the vehicle is input from the sensor 23, and an occupant seating signal for the rear seat is input from a seating sensor 24 installed in a seat cushion of a rear seat (not shown) immediately after the front seat 1. Is provided with a storage unit 25.

The operation of the above-mentioned device will be described. Since the mounting detection signal is not input from the airbag module mounting sensor 16 to the controller 6 when the airbag module 14 is not mounted in the recess 10, as described above. By freely operating the reclining switch 5 and / or the slide switch 8, the controller 6 drives the reclining electric mechanism 7 and / or the slide electric mechanism 9, respectively, to move the seat back 2 and / or the seat cushion 3 of the front seat 1, respectively. The reclining angle and / or the front / rear slide position can be adjusted according to the operation of the reclining switch 5 and / or the slide switch 8, or the seat back 2 and the seat cushion 3 of the front seat 1 are respectively stored in the storage unit 2.
The controller 6 drives the reclining electric mechanism 7 and the sliding electric mechanism 9, respectively, so that the reclining angle and the front-back slide position selectively stored by the controller 5 are obtained.

A signal indicating that an occupant is seated on a rear seat (not shown) immediately after the front seat 1 is a seat sensor 24.
Even when there is no input from the controller 6 to the controller 6, the reclining angle of the seat back 2 and the reclining angle of the seat back 2 can be changed by freely operating the reclining switch 5 and / or the slide switch 8 or by selectively storing the storage unit 25. Alternatively, the front and rear slide position of the seat cushion 3 is adjusted, and in this case, even if the airbag module 14 is mounted in the recess 10 of the seat back 2, the above adjustment is allowed.

On the other hand, when the airbag module 14 is mounted in the recess 10, a vehicle collision signal is input to the controller 6 by the impact sensor 23, and the inflator 17 in the airbag module 14 is instructed by the controller 6 based on an instruction from the controller 6. When the folded airbag 18 is inflated due to the actuation, the inflating force tears the creases 19, and at the same time, the lid 12 is opened rearward and upward with the hinge 11 as a fulcrum as shown by a chain double-dashed line in FIG. 2, the airbag 18 deploys from the seat back 2 of the front seat 1 toward a rear seat (not shown) immediately after the front seat 1, as partially shown by a chain double-dashed line in FIG. The reclining of the seat back 2 allows the bag 18 to most effectively protect the occupant in the rear seat from a vehicle collision. Longitudinal sliding position of the ring angle and the seat cushion 3 (hereinafter, referred to as "optimum state of the front seat 1") to the storage unit 25 has stored.

The storage unit 25 also includes the optimum state of the front seat 1 and the seat back 2 of the front seat 1.
The reclining angle range of the seat back 2 and the front and rear slide position range of the seat cushion 3 (hereinafter, referred to as “appropriate range of the front seat 1”) in which the airbag 18 inflated and deployed can appropriately perform the occupant protection are stored. doing.

The appropriate range of the front seat 1 is a constant reclining angle range of the seat back 2 and a constant front and rear slide position range of the seat cushion 3, or a reclining angle range of the seat back 2 and the seat cushion 3. By providing a correlation with the front and rear slide position range, the reclining angle range of the seat back 2 becomes narrower as the seat back 2 moves away from the occupant of the rear seat to be protected by the forward movement of the front seat 1, thereby reducing the reclining angle range of the front seat 1. Even if the reclining angle range is widened as the seat back 2 approaches the occupant of the rear seat to be protected by moving backward, the occupant can be sufficiently protected from the collision of the vehicle, and the reclining angle of the seat back 2 can be improved. Optimal state Even if the front / rear slide position range of the seat cushion 3 becomes narrower as the distance from the seat cushion 3 increases and the reclining angle of the seat back 2 gets closer to the optimum state, the occupant of the vehicle is not It can be sufficiently protected from the collision of.

Therefore, when the airbag module 14 is mounted in the recess 10 of the seat back 2 and the mounting detection signal is input from the airbag module mounting sensor 16 to the controller 6, or the occupant seating signal of the rear seat is transmitted. Only when the seating sensor 24 is input to the controller 6, when the mounting detection signal is input from the airbag module mounting sensor 16 to the controller 6, the reclining angle of the seat back 2 and the front-back slide position of the seat cushion 3 are input. Is the front seat 1
If it is not within the appropriate range of, the controller 6 drives the reclining electric mechanism 7 and / or the slide electric mechanism 9 to set the reclining angle of the seat back 2 and the front and rear slide positions of the seat cushion 3 based on the memory of the storage unit 25. Automatically and forcibly adjusts to the optimum state of 1 or within an appropriate range of the front seat 1.

In this state, by operating the reclining switch 5 and / or the slide switch 8, the reclining electric mechanism 7 and / or the sliding electric mechanism 9 are driven, and the reclining angle of the seat back 2 and / or the front / back slide of the seat cushion 3 are driven. Each position is arbitrarily adjusted within an appropriate range of the front seat 1, and the condition of the front seat 1 is allowed to be matched with the occupant's preference.

Further, the air bag module mounting sensor 1
6 to the controller 6, or only when the passenger seating signal of the rear seat is input from the seating sensor 24 to the controller 6, the airbag module mounting sensor 16 is mounted to the controller 6. Even when the detection signal is input, if the reclining angle of the seat back 2 and the front and rear slide position of the seat cushion 3 are within the appropriate range of the front seat 1, the automatic adjustment of the front seat 1 by the controller 6 is not performed. It is a thing.

As described above, the recess 1 of the seat back 2
0 when the airbag module 14 is mounted, or when an occupant is seated in the rear seat and the airbag module 14 is mounted in the recess 10 of the seatback 2, the reclining angle of the seatback 2 and The front / rear slide position of the seat cushion 3 is automatically adjusted to the optimum state of the front seat 1, or the reclining angle of the seat back 2 and the front / rear slide position of the seat cushion 3 are surely set within an appropriate range of the front seat 1. Therefore, in the event of a vehicle collision, the airbag 18 that deploys from the airbag module 14 toward the rear seat is most effectively arranged or appropriately arranged for protecting the occupant of the rear seat, so that the occupant is protected. It is possible to reliably and easily protect from a vehicle collision.

When the airbag module 14 is not mounted in the recess 10 of the seat back 2, the reclining switch 5 and / or the slide switch 8 are provided.
By operating the, the reclining angle of the seat back 2 and the slide position of the seat cushion 3 in the front-rear direction can be freely adjusted, or the seat back 2 stored in the storage unit 25 of the controller 6 selectively.
Since the front seat 1 can be automatically adjusted to the reclining angle of the seat cushion 3 and the front and rear slide position of the seat cushion 3, the usability of the front seat 1 can be favorably maintained and the recess 10 can be opened and closed by the lid 12. It can be used as a storage case and is very convenient.

Further, if the occupant is not sitting on the rear seat, the reclining switch 5 and / or the slide switch 8 can be operated in the same manner as described above even if the airbag module 14 is mounted in the recess 10 of the seat back 2. , The reclining angle of the seat back 2 and the front-back slide position of the seat cushion 3 can be freely adjusted, or the storage unit 2 of the controller 6 can be adjusted.
The front seat 1 can be automatically adjusted to the reclining angle of the seat back 2 and the front and rear slide positions of the seat cushion 3 which are selectively stored in step 5, and the airbag module 14 can be used even in the event of a vehicle collision. It is also possible to make it practically excellent by suppressing the useless operation of.

It is most desirable to apply each of the above-described embodiments to the passenger seat of the vehicle, but it goes without saying that similar effects can be obtained even if applied to the driver's seat of the vehicle.

[0025]

In the vehicle seat according to the present invention, when the detection means detects that the airbag module is mounted on the seat back, the control means drives the reclining electric mechanism and the slide electric mechanism, respectively. The seat back and the seat cushion are adjusted within a predetermined reclining angle range and a predetermined front and rear slide position range, respectively.Therefore, when the airbag module is mounted on the seat back, the airbag module The airbag deploys from the seat back into the passenger compartment in a predetermined range of directions and positions, and therefore, the occupant in the passenger compartment can always be reliably and easily protected from a vehicle collision.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of essential parts in an embodiment of the present invention.

FIG. 2 is an enlarged longitudinal sectional view taken along the line II-II of FIG.

FIG. 3 is a control system diagram of the embodiment described above.

[Explanation of symbols]

 1 Electric Front Seat 2 Seat Back 3 Seat Cushion 5 Reclining Switch 6 Controller 7 Reclining Electric Mechanism 8 Slide Switch 9 Slide Electric Mechanism 10 Recess 14 Airbag Module 16 Airbag Module Mounting Sensor 18 Airbag 21 Reclining Sensor 22 Slide Sensor 23 Impact Sensor 24 Seating sensor 25 Storage unit

Claims (4)

[Claims] 1. An airbag module, which is detachably attached to a back portion of a seat back and accommodates an airbag that can be deployed into a vehicle compartment in the event of a vehicle collision, and a reclining electric mechanism for adjusting a reclining angle of the seat back. An electric slide mechanism that adjusts the front-rear slide position of the seat cushion, a storage unit that stores a predetermined reclining angle range of the seat back and a predetermined front-rear slide position range of the seat cushion, and the airbag module are provided. A detection unit that detects that the seat back is attached to the back,
When the detection means detects the mounting of the airbag module, the control means drives the reclining electric mechanism and the slide electric mechanism, respectively. Then, the vehicle seat configured to adjust the seat back and the seat cushion within the reclining angle range and the front-rear slide position range, respectively. 2. The air bag module according to claim 1, further comprising an angle detecting means for detecting a reclining angle of the seat back and a position detecting means for detecting a front and rear slide position of the seat cushion. Is detected, and the reclining angle of the seat back detected by the angle detecting means and the front and rear slide position of the seat cushion detected by the position detecting means are respectively stored in the storage means. When it is not within the range and within the front-rear slide position range, the control means drives the reclining electric mechanism and the slide electric mechanism to respectively move the seat back and the seat cushion within the reclining angle range and the front-rear slide, respectively. Within position range A vehicle seat configured to adjust. 3. The method according to claim 1 or 2, further comprising detection means provided on a rear seat on the rear side for detecting seating of an occupant on the rear seat, and only when the detecting means detects the seating of the passenger. A vehicle front configured such that the control means drives the reclining electric mechanism and the slide electric mechanism respectively to adjust the seat back and the seat cushion within the reclining angle range and the front-rear slide position range, respectively. Sheet. 4. The operating mechanism for the reclining electric mechanism and / or the slide electric mechanism according to claim 1, wherein the operating unit drives the reclining electric mechanism and / or the slide electric mechanism. Then, the vehicle seat configured such that the seat back and / or the seat cushion can be selectively adjusted to a desired reclining angle and / or front / rear slide position within the reclining angle range and / or the front / rear slide position range, respectively. .