JP2883805B2 - Safety devices for vehicle seats - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for adjusting the position of a front passenger seat disposed on the side of a driver seat in accordance with the tilt position of the seat back of the driver seat during driving. A vehicle seat that restricts the upper side surface to a range that can face the side surface of the driver's seat upper part of the seat back, and that secures a living space for a person sitting on the vehicle seat in a side collision of the vehicle. Related to safety devices.

[0002]

2. Description of the Related Art Conventionally, this type of technique generally secures a living space for a seated occupant even when an impact force enters a vehicle interior from a side wall of a vehicle body such as a door in a side collision of a vehicle. For example, there is one disclosed in Japanese Utility Model Laid-Open Publication No. Hei 3-26652. That is, a cross member is provided in the lower portion of the seat back of the left and right seats, and a console-type load transmitting member capable of contacting the cross members in the lower portions of the seat backs on both sides is provided between the left and right seats. The load at the time of the collision can be transmitted from one vehicle body side wall to the other vehicle body side wall.

[0003] Further, there is one disclosed in Japanese Utility Model Publication No. 55-8668. This is an upper part of the seat backs of the left and right seats, and a member having impact resistance is provided at a position corresponding to a strong part such as a window shoulder of a vehicle body. Both ends of the member having the above-mentioned members extend from the upper portion of the seat back so as to be opposed to both sides so as not to hinder the opening and closing of the door and the adjustment of the position of the seat.

[0004]

However, according to the prior art disclosed in Japanese Utility Model Laid-Open Publication No. 3-26652, the impact load at the time of an actual side collision is increased from the side of the vehicle body at a high position corresponding to the upper portion of the seat back. However, no consideration is given to preventing deformation of the upper part of the seat back, and the reinforcement of the lower part of the seat back certainly reduces the impact load on the waist of the occupant. There is a possibility that the vehicle may enter the passenger compartment earlier, and the safety of the occupant's chest may be impaired.

In the prior art disclosed in Japanese Utility Model Publication No. 55-8668, the impact resistance is extended from the upper portion of the seat back to both sides by adjusting the position of the seat by changing the tilt angle of the seat back. In many cases, the vicinity of the ends of the members having the above-mentioned members does not approach each other, and in such a case, depending on the form of the side collision of the vehicle, the chest of the occupant hits the vicinity of the end of the impact-resistant member. There is a possibility that the safety of the chest may be impaired.

The present invention has been made in view of such a conventional problem. In the event of a side collision of a vehicle, a living space for a occupant seated on a vehicle seat is secured, and the occupant's An object of the present invention is to provide a vehicle seat safety device that can reliably improve the safety of the chest.

[0007]

The gist of the present invention for achieving the above-mentioned object is that the driving of the driving seat (20a) corresponds to the tilting position of the seat back (21) during driving. The position of the passenger seat (20) arranged beside the seat (20a) is adjusted so that the side of the upper part of the seat back (21) of the passenger seat (20) is located above the seat back (21) of the driver's seat (20a). A safety device for a vehicle seat that secures a living space for a person sitting on the vehicle seat in the event of a side collision of the vehicle, wherein the driver seat ( 20a)
And a seat slide device (13) for supporting each seat cushion (21) of the passenger seat (20) on the vehicle body floor so that the front and rear positions can be adjusted, and each seat back (21) tilting to the rear end of the seat cushion (25). A reclining device (40) that supports the angle so as to be adjustable, a seating detection sensor (52) that detects a seating situation in a driver's seat (20a), and a control unit (51) that regulates the position adjustment of the passenger seat (20). When the control unit (51) receives a seating detection signal from the seating detection sensor (52), the control unit (51) first sets each of the seat backs (2) of the driver seat (20a) and the passenger seat (20).
1) The current position of the upper part is determined based on signals from the seat slide device (13) and the reclining device (40), and then the seat slide device (13) and the reclining device (40) of the passenger seat (20) are determined. ) To output a drive control signal to adjust the position of the passenger seat (20). The upper side of the seat back (21) faces the upper side of the seat back (21) of the driver's seat (20a). The height of the driver seat (20a) and the passenger seat (20) is set above the seat back (21) of the driver's seat (20a) and the passenger seat (20). A rigid reinforcing member (23) extends in the vehicle width direction and is provided therein, and the driver seat (20a) and the passenger seat (20) are provided.
A load transmitting body (30) extending so as to be located between the upper portions of the respective seat backs (21) is connected to at least one of the side portions of each of the seat cushions (26) facing each other. The bottom side of the body (30) is disposed on the vehicle body floor via a rail unit (18) so as to be movable back and forth, and above the load transmitting body (30), the upper part of each seat back (21) on both sides thereof. A high-rigidity transmission reinforcing member (33) that overlaps with each of the reinforcing members (23) provided therein and transmits an impact load received from one of the driver's seat (20a) and the passenger's seat (20) to the other. ) Is provided inside the vehicle seat safety device.

[0008]

[0009]

When the side surface of the upper part of the seat back (21) of the passenger seat (20) faces the side surface of the upper part of the seat back (21) of the driver's seat (20a), for example, the driver's seat (20a) side When a side collision occurs on the vehicle body side wall (12), the impact load enters the vehicle interior from the vehicle body side wall (12) side, and the deformed vehicle body side wall (12) side directly or indirectly drives the driver's seat (20a). Collide with At this time, if the upper portion of the seat back (21) of the driver's seat (20a) is directly subjected to an impact load, the impact load is applied to the seat back (2).
It is transmitted to the load transmitting body (30) between the driver's seat (20a) and the passenger's seat (20) through the reinforcing member (23) provided inside the upper part of (1).

The impact load transmitted to the load transmitting body (30) is superimposed on the reinforcing member (23) on the upper portion of the seat back (21) of the driver's seat (20a) so as to overlap with the reinforcing member (23) almost in a straight line. ), And is transmitted to the passenger seat (20) side through the transmission reinforcing member (33) provided inside. The impact load transmitted to the passenger seat (20) via the load transmitting body (30) is applied to the reinforcing member (2) provided inside the upper part of the seat cushion (26) of the passenger seat (20).
3) and finally to the opposite vehicle body side wall (12).

As described above, the impact load input from one of the vehicle body side walls (12) is surely applied to the opposite vehicle body side wall via the reinforcing members (23, 33) overlapping substantially linearly in the vehicle width direction. It is transmitted to (12) side. In the meantime, the seat back (2) of the driver's seat (20a) and the passenger seat (20)
The upper reinforcing member (1) of (1) also prevents deformation of the upper portion of each seat back (21) corresponding to the vicinity of the occupant's chest as much as possible, and can reduce the probability of the occupant being injured in the chest.

The position of the passenger seat (20) during driving is adjusted by setting the side surface above the seat back (21) of the passenger seat (20) to the seat back (2) of the driver seat (20a).
1) It is restricted within a range that can face the upper side surface. That is, when the control unit (51) receives a seating detection signal from the seating detection sensor (52) provided in the driver's seat (20a), first, each of the seat backs (the driver's seat (20a) and the passenger's seat (20)). 21) The current position of the upper portion is determined based on signals from the seat slide device (13) and the reclining device (40). Next, the control unit (51) outputs a drive regulation signal to each of the seat slide device (13) and the reclining device (40) of the passenger seat (20), and adjusts the position of the passenger seat (20) to the seat back. (21) The upper side is restricted to a range where the upper side can face the upper side of the seat back (21) of the driver's seat (20a). The passenger seat (20) by such a control unit (51)
, The reinforcing members (23, 33) of the load transmitting body (30) at the upper part of each seat back (21) and between them.
Are not greatly shifted so as not to overlap each other at all, and the impact load due to the side collision of the vehicle can be surely reduced from one side to the other via the reinforcing members (23, 33) overlapping so as to be substantially continuous in the vehicle width direction. It can be transmitted to the side of the vehicle body side wall (12), and the living space of the seated person can be secured.

Since the load transmitting body (30) is connected to the side of the seat cushion (26) of one of the seats (20a / 20), the load transmitting body (30) can be moved back and forth in one of the seats (20a / 20). Accordingly, the load transmitting body (30) on the side also moves back and forth. Since the bottom side of the load transmitting body (30) is disposed on the vehicle body floor via a rail unit (18) so as to be able to move back and forth, the load transmitting body (30) is provided with a seat on which the load transmitting body (30) is continuously provided. With the back-and-forth movement of (20a / 20), it moves back and forth reliably and smoothly, and always seats (20a / 20)
Overlaps on the sides. Therefore, one seat (20a / 2
The reinforcing member (23) on the 0) side and the transmitting reinforcing member (33) on the load transmitting body (30) extend substantially in the vehicle width direction regardless of the adjustment of the front / rear position of the seat (20a / 20). It will always be on a straight line.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment according to the present invention. The safety device for a vehicle seat includes reinforcing members 23 and 24 provided in respective seat cushions 25 of the driver's seat 20a and the passenger seat 20 and a load transmitting body 30 provided between the respective seats 20a and 20. Transmission reinforcing members 33, 34,
In addition, the seat back 21 of the driver's seat 20a at the time of driving
And a control system 50 that regulates the position of the passenger seat 20 within a range in which the side surface of the upper part of the seat back 21 can face the side surface of the upper part of the seat back 21 of the driver's seat 20a in accordance with the tilt position of the driver seat 20a. doing.

The control system 50 controls each seat 20a, 20
, A seat slide device 13 that supports the seat cushion 26 on the vehicle body floor 10 so that the front and rear positions can be adjusted;
A reclining device 40 that supports the seat back 21 at the rear end of the seat cushion 26 so that the tilt angle can be adjusted;
A seating detection sensor 52 for detecting a seating situation in the driver's seat 20 a, and a control unit 51 connected to each of the devices 13 and 25 and the seating detection sensor 52 via a signal line to regulate the position adjustment of the passenger seat 20 are provided. It becomes.

As shown in FIG. 1, a driver's seat 20a and a passenger seat 20 are arranged side by side on a vehicle body floor 10 with a floor tunnel 11 interposed therebetween. A back frame 22 is provided in the seat back 21 of each of the seats 20 and 20a.
On an upper portion of the back frame 22, a reinforcing member 23 is provided laterally so as to extend in the vehicle width direction. Reinforcement member 23
Is a highly rigid bar-shaped member for transmitting the impact load received from the side wall of the vehicle body in the event of a side collision to the side. Also,
A similar reinforcing member 24 is also provided on the lower side of the back frame 22.
Is installed horizontally.

As shown in FIG. 2, the reclining device 40 is connected to a base member 41 fixed to the rear end of the seat cushion 26 and to a rear end of the base member 41 via a pivot 42 so as to be capable of adjusting a tilt angle. And an arm member 43 that supports the seat back 21. The reclining device 40 is a power reclining device that tilts the arm member 43 by an electric motor 44 (see FIG. 3). The electric motor 44 is connected to a control unit 51 described later.

The rotation speed of the electric motor 44 is determined by a sensor circuit 44.
It is set to be detected by a. Sensor circuit 4
4a is composed of, for example, a reed switch or the like, and outputs a pulse number proportional to the rotation speed of the electric motor 44 to the control unit 51. The controller 51 is set to count the sensor signal and calculate the tilt position of the seat back 21 from the count value.

The seat cushion 2 of each seat 20, 20a
6 are installed on the vehicle body floor 10 via the seat slide device 13 so that the front and rear positions can be adjusted. The seat slide device 13 includes a vehicle body-side rail 15 fixed to the vehicle body floor 10 via a leg member 16,
The seat-side rail 14 is fitted to the vehicle-body-side rail 15 so as to be movable back and forth and fixed to a cushion frame 27 in a seat cushion 26.

The seat slide device 13 includes the electric motor 1
8 (see FIG. 3), a power slide device for moving the seat side rail 14 back and forth with respect to the vehicle body side rail 15 and the electric motor 18 is connected to a control unit 51 described later. The rotation speed of the electric motor 18 is set to be detected by the sensor circuit 18a. The sensor circuit 18a is composed of, for example, a reed switch or the like, and controls the number of pulses proportional to the number of rotations of the electric motor 18 by the control unit 51.
Is output to The controller 51 counts the sensor signal, and calculates the seat cushion 26 from the count value.
It is set to calculate the front and back position of.

On the side of the driver's seat 20a near the center of the cabin of the seat cushion 26, a load transmitting body 30 extending between the driver's seat 20a and the passenger seat 20 between the upper portions of the respective seat backs 21 is connected. Has been established. The load transmitting body 30
Floor tunnel 1 from the lower side of the seat cushion 26
It is mounted on a support plate 28 extending along 1 and forms an armrest and console box.
Further, the bottom side of the load transmitting body 30 is disposed via the rail unit 18 on the upper part of the floor tunnel 11 so as to be movable back and forth.

Inside the load transmitting body 30, side plates 32, 32 facing each other, and both side plates 32, 32,
The transmission reinforcing members 33 and 34 erected at the upper part and the lower part between 32, respectively, are installed. The transmission reinforcing members 33 and 34 are arranged so as to be linearly connected to the reinforcing members 23 and 24 provided inside and below the seat backs 21 on both sides thereof, respectively.

On the seat cushion 26 side of the driver's seat 20, a seating detection sensor 52 constituting a control system 50 is provided.
(See FIG. 3). The seating detection sensor 52 is
The control unit 51 detects whether or not the vehicle is in operation, that is, detects a seating state of a seated person in the driver's seat 20, and sends a seating detection signal to the control unit 51. Such a seating detection sensor 52 includes, for example,
It comprises a switch for detecting the detached state of the seat belt of the driver's seat as described in Japanese Utility Model Publication No. 62-117131, a pressure sensor provided inside the seat cushion and operated by the weight of the occupant, and the like. Since the specific configuration is general, the description is omitted.

As shown in FIG. 3, the control unit 51 which receives a seating detection signal from the seating detection sensor 52 is constituted by a microcomputer, and comprises a CPU, a ROM, a RAM, and the like. And the electric motor 18 of the seat slide device 13 via a signal line. The control unit 51 calculates the current position of the upper part of the seat back 21 of each of the seats 20a and 20 as a numerical value based on the signals of the sensor circuits 18a and 44a of the seat slide device 13 and the reclining device 40, and calculates both numerical values. It can be compared.

Further, when the seating detection signal from the seating detection sensor 52 is input, the control unit 51 responds to the difference between the two values by the electric motors 18, 40 of the devices 13, 40 on the passenger seat 20 side.
44 is set so as to output a predetermined drive regulation signal. As a result, the front and rear positions of the passenger seat 20 and the tilting position of the seat back 21 that can be adjusted by the occupant are such that the upper part of the seat back 21 on the passenger seat 20 side overlaps with the upper part of the seat back 21 of the driver's seat 20a on the side. It is regulated within a certain range that can transmit an impact load.

Next, the operation of the first embodiment will be described. During driving, the seating detection sensor 52 detects the driver's
N, and outputs a seating detection signal to the control unit 51. Based on this, the control unit 51 calculates the current position of the upper part of each seat back 21 of each of the passenger seats 20a, 20 as a numerical value based on the signals of the sensor circuits 18a, 44a and compares them. Subsequently, the control unit 51 controls the electric motor 18 of the seat slide device 13 on the passenger seat 20 side and the reclining device 4.
A drive control signal is output to the electric motor 44 based on the comparison of the numerical values, and the seat back 2 of the passenger seat 20 is output.
1. A certain range in which the upper reinforcing member 23 overlaps the reinforcing member 23 above the seat back 21 of the driver's seat 20a in a straight line to some extent with the transmitting reinforcing member 33 above the load transmitting body 30 therebetween, and can transmit an impact load. To be regulated.

As a result, the upper portions of the seat backs 21 of the seats 20a and 20 and the reinforcing members 23 and 33 of the upper portion of the load transmitting body 30 therebetween do not significantly shift so as not to overlap each other at all. Under such conditions, in FIG. 1, for example, when a side collision occurs on the vehicle body side wall 12 on the driver's seat 20a side, the impact load enters the vehicle interior from the vehicle body side wall 12 side, and the deformed vehicle body side wall 12 side Driver's seat 20a
Collide with

At this time, the seat back 21 of the driver's seat 20a
When the upper part of the vehicle is directly subjected to an impact load, the impact load is transmitted to the load transmitting body 30 between the driver's seat 20a and the passenger's seat 20 through the reinforcing member 23 provided inside the upper part of the seat cushion 26. When the lower portion of the seat back 21 of the driver's seat 20 a receives an impact load directly, the impact load is applied to the reinforcing member 2 provided in the lower portion of the seat cushion 26.
4, the transmission of the impact load by the upper reinforcing member 23 will be described as a representative, and the description of the lower reinforcing member 24 will be replaced.

The impact load transmitted to the load transmitting body 30 is:
Reinforcing member 23 above seat back 21 of driver's seat 20a
The force is transmitted to the transmission reinforcing member 33 provided in the upper portion of the load transmitting body 30 so as to substantially overlap with the straight line. Since the load transmitting body 30 is continuously provided on the side of the seat cushion 26 of the driver's seat 20a, it moves back and forth with the driver's seat 20a. In addition, as shown in FIG.
Of the rail unit 1 on the floor tunnel 11
Since the load transmitting body 30 is disposed so as to be able to move forward and backward through the load 8, the load transmitting body 30 moves forward and backward reliably and smoothly with the forward and backward movement of the driver's seat 20a, and always overlaps the side portion of the driver's seat 20a. Accordingly, the reinforcing member 23 on the driver's seat 20a side and the transmitting reinforcing member 33 on the load transmitting body 30 surely overlap each other regardless of the adjustment of the front and rear position of the driver's seat 20a.

The impact load transmitted to the upper portion of the load transmitting body 30 is further transmitted to the passenger seat 20 via the transmitting reinforcing member 33. The impact load transmitted to the passenger seat 20 side is transmitted through the reinforcing member 23 provided inside the upper part of the seat cushion 26 of the passenger seat 20 and finally transmitted to the opposite side of the vehicle body side wall 12. As described above, the impact load input from one vehicle body side wall 12 is reliably transmitted to the opposite vehicle body side wall 12 via the reinforcing members 23 and 33 that overlap substantially linearly in the vehicle width direction. in the meantime,
The deformation of the upper portion of each seatback 21 corresponding to the vicinity of the occupant's chest is prevented as much as possible by the reinforcing member 23 above each of the seatbacks 21 of the driver's seat 20a and the passenger's seat 20, and the probability of the occupant being injured in the chest Can be reduced.

When the driver gets off the vehicle,
When the driver moves away from the driver's seat 20, the seating detection sensor 52 enters a state in which the seating state of the occupant is not detected,
The regulation of the position adjustment of the passenger seat 20 by the control unit 51 is also released.

FIG. 4 shows a second embodiment of the present invention. In this embodiment, the load transmitting body 30 is fixedly mounted on the floor tunnel 11 between the driver's seat 20a and the respective seat cushions 26 of the passenger seat 20 via, for example, a mounting bracket 35. The description of the same parts as in the first embodiment will be omitted. Thereby, in this embodiment, the mounting of the load transmitting body 30 can be simplified, and the mounting strength can be increased.

In the first embodiment, the load transmitting member is provided continuously on the side of the driver's seat cushion near the center of the passenger compartment. It may be provided continuously.

[0034]

According to the safety device for a vehicle seat according to the present invention, the position of the front passenger seat is adjusted such that the upper side of the front passenger seat faces the upper side of the driver seat when driving. And an impact load input from one of the side walls of the vehicle body, a reinforcing member in an upper portion of each of a driver's seat and a passenger seat overlapping substantially linearly in a vehicle width direction, and a load transmission therebetween. Through the reinforcing member for transmission in the upper part of the body, the transmission can be reliably performed to the opposite side wall of the vehicle body. During this time, deformation of the upper part of each seatback corresponding to the vicinity of the occupant's chest can be prevented as much as possible by the reinforcing members on the upper part of each seatback of the driver's seat and the passenger's seat, a living space is secured, and the occupant's Safety is improved.

[Brief description of the drawings]

FIG. 1 is a front view showing a driver seat and a passenger seat provided with a vehicle seat safety device according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a driver's seat and a passenger seat provided with a vehicle seat safety device according to the first embodiment of the present invention.

FIG. 3 is a block diagram schematically showing a control system constituting a safety device for a vehicle seat according to a first embodiment of the present invention.

FIG. 4 is a front view showing a driver seat and a passenger seat provided with a vehicle seat safety device according to a second embodiment of the present invention.

[Explanation of symbols]

 20a ... Driver seat 20 ... Passenger seat 21 ... Seat back 23,24 ... Reinforcement member 26 ... Seat cushion 30 ... Load transmission body 33,34 ... Transmission reinforcement member 50 ... Control system

Claims (1)

(57) [Claims] 1. The method according to claim 1, further comprising: adjusting a position of a passenger seat disposed on a side of the driver's seat corresponding to a tilting position of a seat back of the driver's seat during driving; A vehicle seat safety device for securing a living space for a person sitting on the vehicle seat in a side collision of a vehicle, wherein the vehicle seat is regulated to a range that can oppose a side surface of an upper portion of a seat back of a seat. A seat slide device for supporting the driver and passenger seat cushions on the vehicle body floor so that the front and rear positions can be adjusted; a reclining device for supporting each seat back at the rear end of the seat cushion so as to adjust the tilt angle; A seat detection sensor that detects a seating situation in a seat; and a control unit that regulates position adjustment of a front passenger seat. When receiving the intellectual signal, first, the current position of the upper part of each seat back of the driver's seat and the passenger seat is determined based on signals from the seat slide device and the reclining device. The drive regulation signal is output to each reclining device to adjust the position of the passenger seat,
The upper side of the seat back is restricted within a range in which the side of the upper side of the driver's seat can be opposed to the side of the upper side of the driver's seat. A high-rigidity reinforcing member that transmits the received impact load to the side is extended in the vehicle width direction and provided inside, and at least one of the opposing side portions of each of the driver's seat and the passenger seat's seat cushion, A load transmitting body extending so as to be located between the upper portions of the respective seat backs, and a bottom side of the load transmitting body disposed on a vehicle body floor via a rail unit so as to be movable back and forth; A high-rigidity transmission reinforcing member that transmits an impact load received from one of the driver's seat and the passenger's seat to the other by overlapping the reinforcing members provided inside the upper portions of the seat backs on both sides of the upper portion of the vehicle. Within Safety device for a vehicle seat, characterized in that the.