JP2891287B2 - Vehicle seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention
The present invention relates to a vehicle seat capable of protecting an occupant by reducing an impact load received from a side wall of a vehicle body by an airbag device provided in a seat back.

[0002]

2. Description of the Related Art Conventionally, in order to avoid a direct impact between a side wall of a vehicle body such as a door deformed by an impact load and a seated occupant in a side collision of a vehicle, various airbag devices have been used. There has been proposed, for example, a vehicle seat structure as disclosed in Japanese Patent Application Laid-Open No. 4-50052.

[0003] In this vehicle seat structure, an airbag device is provided on a seatback side portion facing a vehicle body side wall side so as to expand in a space perpendicular to the vehicle body side wall side or in a space between a seated person and the vehicle. I have. The airbag body of the airbag device has a relatively large diameter in an inflated state, and is formed so as to largely inflate toward the side of the seated person. Further, the door that has been deformed toward the vehicle interior due to the impact load is in a state of further pressing the greatly inflated airbag body toward the occupant.

[0004]

However, in such a conventional technique, in the case of a side collision, the door is deformed so as to enter the interior of the vehicle cabin due to the impact load, thereby bulging at the side of the seat back. There is a possibility that the airbag body is strongly pressed toward the interior of the vehicle cabin, thereby applying an impact load to the occupant.

In this case, there is a problem that the impact load received by the seated person from the airbag body becomes large, and the inertia force of the seated person at the time of collision cannot be effectively absorbed. Further, there is a risk that the occupant may tertiarily collide with interior parts in the vehicle interior such as a console box provided on the side of the seat back on the vehicle interior side due to an impact load received from the airbag body.

The present invention secures a space in which an airbag body of an airbag device can bulge in the event of a side collision of a vehicle,
The impact load received by the occupant from the airbag body can be suppressed, the inertia force applied to the occupant can be effectively absorbed, the secondary collision of the occupant against the side wall of the vehicle body can be prevented, and It is an object of the present invention to provide a vehicle seat that can prevent a tertiary collision with an interior component of the vehicle and can surely improve the safety of a seated person.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a vehicle seat according to a first aspect of the present invention has a reinforcing member extending in a horizontal direction fixed to an upper portion of a seat back. A projecting rod projecting outward from both sides of the seat back is formed at both ends of the reinforcing member, and an inner bracket extending in a direction perpendicular to the reinforcing member is fixed to both ends of the reinforcing member, An outer bracket parallel to the inner bracket is fixed, and the outer bracket and the inner bracket on at least the side of the outer bracket facing the vehicle body side wall are connected by a horizontal rod to form a space, and gas is formed in the space. A gas generator, and an airbag body into which gas injected from the gas generator flows and expands, wherein the airbag body is normally folded and held in a folded state. Characterized in that accommodating the bag device.

In the vehicle seat according to a second aspect of the present invention, a reinforcing member extending in a horizontal direction is fixed to an upper portion of the seat back, and projecting rods projecting outward from both sides of the seat back at both ends of the reinforcing member. Is formed, and an inner bracket extending in a direction orthogonal to the reinforcing member is fixed to both ends of the reinforcing member, and an outer bracket parallel to the inner bracket is fixed to a tip of the protruding rod, and in a state parallel to the protruding rod. The inner bracket and the outer bracket are connected by a horizontal rod to form left and right spaces, respectively, and a gas generator is provided in at least a space of the left and right spaces that faces the vehicle body side wall,
An airbag body into which gas ejected from the gas generator flows and inflates, and stores an airbag device for side collision in which the airbag body is normally held in a folded state, so that a side collision occurs. In this case, the intrusion of the cabin on the vehicle body side wall side is suppressed by the outer bracket at the tip of the protruding rod, and the side collision air in the space between the vehicle body side wall side and the seated person secured by the protruding rod at the time of side collision. The airbag body of the bag device is characterized in that it is adapted to inflate at least to the side of the head and chest of the seated person.

[0009]

According to the vehicle seat according to the first aspect of the present invention, a reinforcing member extending in the horizontal direction is fixed to the upper portion of the seatback, and protrudes outward from both ends of the seatback at both ends of the reinforcing member. A protruding rod is formed, an inner bracket extending in a direction orthogonal to the reinforcing member is fixed to both ends of the reinforcing member, an outer bracket parallel to the inner bracket is fixed to a tip of the protruding rod, and at least one of the outer brackets The outer bracket and the inner bracket on the side facing the vehicle body side wall are connected by a horizontal rod to form a space, into which a gas generator and gas ejected from the gas generator are introduced and expanded. The airbag body accommodates a side collision airbag device which normally holds the folded state, so that the side wall of the vehicle body can be used in the event of a side collision. Airbag body of a side collision airbag device in a space between a side wall of a vehicle body and a seated occupant at the time of a side collision in a side collision. Bulges corresponding to at least the sides of the head and chest of the seated person,
The impact load received by the occupant from the airbag body can be suppressed, the inertia force applied to the occupant can be effectively absorbed, the secondary collision of the occupant against the side wall of the vehicle body can be prevented, and It is possible to prevent a tertiary collision with the interior components.

According to the vehicle seat of the present invention, a reinforcing member extending in the horizontal direction is fixed to the upper portion of the seat back, and protrudes outward from both ends of the seat back at both ends of the reinforcing member. A protruding rod is formed, an inner bracket extending in a direction perpendicular to the reinforcing member is fixed to both ends of the reinforcing member, and an outer bracket parallel to the inner bracket is fixed to a tip of the protruding rod, and is parallel to the protruding rod. In this state, the inner bracket and the outer bracket are connected by a horizontal rod, and a substantially rectangular space portion is formed on each of the left and right sides of the seat back. It can be suppressed by a substantially rectangular frame consisting of an outer bracket, a protruding rod, a lateral rod, and an inner bracket at the tip of the rod. A gas generator the space portion facing the,
An airbag body into which gas ejected from the gas generator flows and inflates, and stores an airbag device for side collision in which the airbag body is normally held in a folded state, so that a side collision occurs. In this case, a side collision airbag device in a space between a vehicle body side wall and a seated person secured by a substantially rectangular frame body including an outer bracket, a protruding rod, a lateral rod, and an inner bracket at the tip of the protruding rod. The airbag body is swelled corresponding to at least the sides of the head and chest of the occupant, suppressing the impact load received by the occupant from the airbag body, and effectively absorbing the inertial force applied to the occupant. Thus, it is possible to prevent a secondary collision of the occupant against the side wall of the vehicle body and to prevent a tertiary collision of the occupant with the interior components in the vehicle compartment.

In this manner, the airbag body of the side collision airbag device inflates in the space secured between the side wall of the vehicle body and the seated occupant while minimizing the intrusion of the vehicle into the cabin on the side wall of the vehicle body. As a result, the airbag body of the side collision airbag device is not pushed harder than the vehicle body side wall and does not apply an impact load to the occupant.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle seat according to the present invention will be described below in detail with reference to the drawings. FIGS. 1 to 6 show one embodiment of a vehicle seat according to the present invention. As shown in FIG. 2, the vehicle seat 20 has a driver's seat and a passenger seat,
Although the driver's seat and the passenger's seat are formed symmetrically in this embodiment, the present invention is not limited to this.

A floor tunnel 11 extending in the front-rear direction is formed at the center of the vehicle body floor 10, and a driver's seat and a passenger seat are provided on the left and right of the floor tunnel 11. Each seat of the vehicle seat 20 is a vehicle body floor 10
The seat cushion 21 is provided so as to be movable back and forth through a front and rear slide mechanism 12 and a seat back 23 supported at the rear end of the seat cushion 21 via a reclining mechanism 24 so as to be tiltable back and forth. .

As shown in FIGS. 1 to 4, the seat back 2
3, a reinforcing member 31 extending in the horizontal direction in the vicinity of the upper frame 23a is fixed, and both ends 31a of the reinforcing member 31 are fixed.
Projecting rods 33 projecting outward from both sides of the seat back 23 are formed respectively. The reinforcing member 31 and the protruding rod 33 can be formed integrally. The reinforcing member 31 may be provided above or below the rear side of the upper frame 23a of the seat back 23. The reinforcing member 31 is a high-rigidity bar-shaped member for preventing the upper portion of the seat back 23 from being deformed as much as possible while transmitting an impact load received from a door on the side of the vehicle body side wall 14 in a side collision. .

The reinforcing member 31 includes an upper frame 23a.
A pair of fixing brackets 35 extending in the direction is formed.
7 It is designed to be able to stop. Inner brackets 39 extending in a direction perpendicular to the longitudinal direction of the reinforcing member 31 are fixed to both ends 31 a of the reinforcing member 31. The inner bracket 39 is fixed to the side frame 23b by the bolt 38. A side bracket 23c is fixed to the side frame 23b.

An outer bracket 41 parallel to the inner bracket 39 is fixed to a tip of the protruding rod 33. The outer bracket 41 and the inner bracket 39 at least on the side of the outer bracket 41 facing the vehicle body side wall 14 side. Are connected by a horizontal rod 43, and a substantially rectangular space 45 is formed on each of the left and right sides of the seat back 23.

In this embodiment, a substantially rectangular space 45 is provided.
8 is formed on each of the left and right sides of the seat back 23.
As shown in the figure, an outer bracket 41 parallel to the inner bracket 39 is provided at the tip of a protruding rod 33 on the other end opposite to the adjacent seat side in the upper part of the seat back 23, and the outer bracket 41 and the inner bracket 39 are connected by a horizontal rod. A structure that is not connected by 43 may be used.

According to the above construction, in the event of a side collision, the vehicle enters the cabin on the side of the vehicle body side wall 14 so as to prevent the protruding rod 33 from having a substantially rectangular shape formed by the outer bracket 41, the protruding rod 33, the lateral rod 43 and the inner bracket 39. Can be suppressed by the frame.

A side collision airbag device 51 is accommodated in at least a space portion 45 of the left and right space portions 45 facing the vehicle body side wall 14 side. As shown in FIG. 5, the side collision airbag device 51 is unitized, and the base plate 52 of the airbag device 51 is
1. It is fixed to a substantially rectangular frame composed of a projecting rod 33, a lateral rod 43 and an inner bracket 39.

A gas generator 53 is provided on the base plate 52.
Is fixed, and when the gas generator 53 operates, the gas generator 5
And an airbag body 55 fixed to the base plate 52 side so that gas ejected from the airbag 3 flows in and swells. The airbag body 55 is held by the airbag cover 57 in a folded state. The back side of the gas generator 53 is covered with an inflator cover 59. Reference numeral 60 denotes a guide member.

In the event of a side collision, the vehicle body side wall 14 side secured by a substantially rectangular frame formed of the outer bracket 41, the protruding rod 33, the lateral rod 43, and the inner bracket 39 at the tip of the protruding rod 33, and the occupant. As shown in FIG. 6, the airbag body 55 of the side collision airbag device 51 in the space 45 between the airbags inflates corresponding to at least the sides of the head and chest of the seated person. The impact load received from the main body 55 can be suppressed, the inertial force applied to the occupant can be effectively absorbed, and a secondary collision of the occupant with the vehicle body side wall 14 can be prevented.

As shown in FIG. 2, near the side beam 15 of the door on the side of the vehicle body side wall 14, an impact load at the time of a side collision with the door is detected, and the side collision air stored in the space 45 is detected. A sensor 61 for instructing the airbag body 55 of the bag device 51 to inflate is provided. The sensor 61 is generally of three types: an electromechanical type, a mechanical type, and an electronic type.

The reinforcing member 31 extending to the adjacent seat side is
Since the seat back 23 protrudes further to the side than the side frame 23b, the outer bracket 4 at the end of the protruding rod 33 prevents entry into the vehicle cabin on the vehicle body side wall 14 side in the event of a side collision.
1. A substantially rectangular frame formed by the protruding rod 33, the lateral rod 43, and the inner bracket 39, and can transmit an impact load input from the side wall 14 of the vehicle body to an adjacent seat in the event of a side collision. It can be performed.

FIG. 7 shows a different embodiment of the present invention. Parts corresponding to those of the above-described embodiment are denoted by the same reference numerals, and further detailed description is omitted. Inner bracket 3 fixed to tip 31a of member 31
9 extends above the end 31a of the reinforcing member 31, and an outer bracket 41 parallel to the inner bracket 39 is formed to also extend above the end of the protruding rod 33, and at least the side of the outer bracket 41 closer to the vehicle body side wall 14. The outer bracket 41 and the inner bracket 39 on the opposite side are connected by a horizontal rod 43, and substantially rectangular space portions 45 are formed on both left and right sides of the seat back 23 and above the protruding rod 33. Except for this point, it has the same configuration as the embodiment described above.

FIG. 8 shows still another embodiment of the present invention. An outer bracket 41 and an inner bracket 39 at one end facing the vehicle body side wall 14 are connected by a horizontal rod 43, and are substantially similar to those shown in FIG. The square space 45 is the seat back 2
3 is formed only on the side facing the side wall 14 of the vehicle body, and is formed above the protruding rod 33. The inner bracket is attached to the tip of the protruding rod 33 on the other side end opposite to the adjacent seat side above the seat back 23. Outer bracket 4 parallel to 39
1 is provided, and the outer bracket 41 and the inner bracket 39 are not connected by the horizontal rod 43.

[0026]

The vehicle seat according to one embodiment of the present invention has been described above. According to the vehicle seat according to the first aspect of the present invention, the reinforcing member extending horizontally above the seat back. Are fixed, projecting rods projecting outward from both sides of the seat back are formed at both ends of the reinforcing member,
An inner bracket extending in a direction orthogonal to the reinforcing member is fixed to both ends of the reinforcing member, an outer bracket parallel to the inner bracket is fixed to a tip of the protruding rod, and at least the outer bracket faces at least a vehicle body side wall side. The outer bracket on the side and the inner bracket are connected by a horizontal rod to form a space, and a gas generator and an airbag body into which gas ejected from the gas generator flows and inflates into the space. Since the airbag body accommodates the side collision airbag device in which the airbag body is normally kept in a folded state, the intrusion of the side wall side of the vehicle into the vehicle interior during a side collision is caused by the outer bracket at the tip of the protruding rod and The airbag body of the side collision airbag device in the space between the side wall of the vehicle body and the occupant during a side collision can be suppressed by the inner bracket. The bulges at least on the sides of the head and chest, suppresses the impact load received by the occupant from the airbag body, can effectively absorb the inertial force applied to the occupant, and provides the occupant with the side of the vehicle body side wall. And a tertiary collision of the occupant with interior components in the vehicle cabin can be prevented.

According to the vehicle seat according to the second aspect of the present invention, a reinforcing member extending in the horizontal direction is fixed to the upper portion of the seat back, and protrudes outward from both ends of the seat back at both ends of the reinforcing member. A protruding rod is formed, an inner bracket extending in a direction perpendicular to the reinforcing member is fixed to both ends of the reinforcing member, and an outer bracket parallel to the inner bracket is fixed to a tip of the protruding rod, and is parallel to the protruding rod. In this state, the inner bracket and the outer bracket are connected by a horizontal rod, and a substantially rectangular space portion is formed on each of the left and right sides of the seat back. It can be suppressed by a substantially rectangular frame consisting of an outer bracket, a protruding rod, a lateral rod, and an inner bracket at the tip of the rod. A gas generator the space portion facing the,
An airbag body into which gas ejected from the gas generator flows and inflates, and stores an airbag device for side collision in which the airbag body is normally held in a folded state, so that a side collision occurs. In this case, a side collision airbag device in a space between a vehicle body side wall and a seated person secured by a substantially rectangular frame body including an outer bracket, a protruding rod, a lateral rod, and an inner bracket at the tip of the protruding rod. The airbag body is swelled corresponding to at least the sides of the head and chest of the occupant, suppressing the impact load received by the occupant from the airbag body, and effectively absorbing the inertial force applied to the occupant. Thus, it is possible to prevent a secondary collision of the occupant with respect to the side wall of the vehicle body and to prevent a tertiary collision of the occupant with the interior components in the vehicle compartment.

According to the present invention, in the event of a side collision of a vehicle,
A space where the airbag body of the airbag device can inflate is secured, the impact load received by the occupant from the airbag body can be suppressed, the inertial force applied to the occupant can be effectively absorbed, and the seating on the side of the vehicle body side can be achieved. It is possible to obtain a vehicle seat that can prevent a secondary collision of an occupant, prevent a occupant from tertiarily colliding with an interior component in a vehicle cabin, and reliably improve the safety of the occupant.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a vehicle seat according to the present invention.

FIG. 2 is a front view showing one embodiment of a vehicle seat according to the present invention.

FIG. 3 is a perspective view showing one embodiment of a reinforcing member and a frame of the vehicle seat according to the present invention.

FIG. 4 is a perspective view showing one embodiment of a reinforcing member and a frame of the vehicle seat according to the present invention.

FIG. 5 is an exploded perspective view showing an embodiment in which the airbag device is housed in a space of a substantially rectangular frame of the vehicle seat according to the present invention.

FIG. 6 is a cross-sectional plan view showing an embodiment in which the airbag device is stored in a space of a substantially square frame of the vehicle seat according to the present invention.

FIG. 7 is a front view showing another embodiment of the reinforcing member and the frame of the vehicle seat according to the present invention.

FIG. 8 is a front view showing still another embodiment of the reinforcing member and the frame of the vehicle seat according to the present invention.

[Explanation of symbols]

 Reference Signs List 20 vehicle seat 21 seat cushion 23 seat back 23a upper frame 23b side frame 31 reinforcing member 33 protruding rod 35 fixing bracket 37 bolt 38 bolt 39 inner bracket 41 outer bracket 43 lateral rod 45 space 51 airbag device 52 base plate 53 gas generation Container 55 Airbag body 57 Airbag cover 59 Inflator cover 61 Sensor

Claims (2)

(57) [Claims] 1. A reinforcing member extending in a horizontal direction is fixed to an upper portion of a seat back, and protruding rods projecting outward from both sides of the seat back are formed at both ends of the reinforcing member, and reinforcing members are provided at both ends of the reinforcing member. An inner bracket extending in a direction perpendicular to the inner bracket is fixed, an outer bracket parallel to the inner bracket is fixed to a tip of the protruding rod, and an outer bracket and an inner bracket on at least a side of the outer bracket opposed to a vehicle body side wall are provided. Are connected by a horizontal rod to form a space, and a gas generator and an airbag body into which gas ejected from the gas generator flows and inflates are provided in the space, and the airbag body is A vehicle seat containing a side collision airbag device that is normally folded. 2. A reinforcing member extending in a horizontal direction is fixed to an upper portion of the seat back, and protruding rods projecting outward from both sides of the seat back are formed at both ends of the reinforcing member, and reinforcing members are provided at both ends of the reinforcing member. An inner bracket extending in a direction perpendicular to the protruding rod is fixed, an outer bracket parallel to the inner bracket is fixed to a tip of the protruding rod, and the inner bracket and the outer bracket are connected by a horizontal rod in a state parallel to the protruding rod. A gas generator, and an airbag body in which gas injected from the gas generator flows into and inflates at least a space portion of the left and right space portions facing the vehicle body side wall. A side collision airbag device in which the airbag body is normally kept in a folded state at the time of normal operation. The airbag body of the side collision airbag device in the space between the side wall of the vehicle body and the occupant secured by the protruding rod in the event of a side collision, and at least the head of the occupant and A vehicle seat characterized in that it protrudes corresponding to the side of the chest.