JPH06227303A - Structure of seat for vehicle - Google Patents

Abstract

PURPOSE:To prevent a head of an occupant from intruding into a gap between seat-backs at the time of collision, or when a large load acts in the lateral direction of a vehicle, by moving a seat backward, so that a gap formed between seat-backs neighboring to each other is lessened. CONSTITUTION:A seat-back position adjusting means 50, which detects a lateral load exceeding a prescribed load in order to slide in an adjusted manner a driver's seat and an assistant's seat backward, is provided in a space between the said seats placed neighboring to each other. In this constitution, the seat- back position adjusting means 50 is provided with a seat slider, which slides/ guides the seats backward relative to a vehicle body floor, a locking mechanism, which locks this seat slider usually but is when a lateral load exceeding the prescribed load acts on the vehicle body, and a restricting means 56, which is installed in a space between the seat slider and the vehicle body floor and which restricts the amount of backward movement of the seat in accordance with a reclining angle of the seat-back.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat structure having a plurality of seats arranged close to each other in a vehicle width direction and having seatbacks of these seats each having an independent reclining function.

[0002]

2. Description of the Related Art Conventionally, a vehicle seat for three persons has been proposed as disclosed in Japanese Utility Model Laid-Open No. 4-58151.
This three-seater seat is divided into two for the one-person seat and two-seat seats in the vehicle width direction, and the two divided seats are arranged close to each other in the vehicle width direction. When such a three-seater seat is used for the front seat, the one-seat seat is used as a driver's seat and the two-seat seat is used as a passenger seat.

By the way, when the seat for three persons is used as the front seat as described above, a slide device and a reclining device are respectively provided to the two divided seats in order to adjust the postures of the driver and the passenger. The mounting, foot space of each passenger and the inclination of each seat back can be adjusted independently.

[0004]

However, in such a conventional vehicle seat structure, a three-seater seat has two seats.
When the seats for one person and the seats for two persons are greatly different in reclining angle from each other so that they are arranged close to each other, a large gap is generated between the seat backs of the two. . Considering the case of a side collision of the vehicle on the premise of such a large gap between the seat backs, some measures should be taken to eliminate such a gap at the time of a side collision. However, it is desirable from the viewpoint of ensuring the safety of passengers.

In view of such conventional problems, the present invention moves the seat rearward when a large load acts in the lateral direction of the vehicle to reduce the gap formed between the seat backs of the adjacent seats. Accordingly, it is an object of the present invention to provide a vehicle seat structure capable of improving the safety of passengers.

[0006]

In order to achieve the above object, the present invention provides a vehicle seat structure in which at least two seats are arranged close to each other in the vehicle width direction and each seat has a reclining function. A seat back position that detects a load greater than a predetermined value that acts in the lateral direction of the vehicle between each seat and the vehicle body floor, and slides the seats backward so that the seat back positions of adjacent seats approach each other. It is configured by providing adjusting means.

Further, it is desirable that the seat back position adjusting means makes the seat on the side where the reclining angle of the seat back is small between the adjacent seats larger than the seat on the larger side.

Further, the seat back position adjusting means locks the seat slider for slidingly guiding the seat rearward of the vehicle with respect to the vehicle body floor, and normally unlocks the seat slider by a load larger than a predetermined value in the lateral direction of the vehicle. Locking mechanism, and a restricting unit that is mounted between the seat slider and the vehicle body floor and restricts the rearward movement amount of the seat according to the reclining angle of the seat back.

Furthermore, at least two front seats are arranged close to each other in the vehicle width direction, each of the front seats has a reclining function, and a rear seat is installed behind the front seats of the vehicle. In the above, the seats are slid backward so that the seat back positions of the adjacent front seats come closer to each other by detecting a load greater than a predetermined value that acts in the lateral direction of the vehicle between each front seat and the vehicle body floor. And a rear seat moving means for moving the rear seat rearward in response to the operation of the seat back position adjusting means, between the rear seat and the vehicle body floor.

[0010]

In the vehicle seat structure of the present invention having the above-described structure, the seat back position adjusting means is actuated to actuate the seat when a load more than a predetermined amount acts in the lateral direction of the vehicle at the time of a side collision. Slides rearward so that the seat back positions of the adjacent seats in the vehicle width direction approach each other. For this reason,
Even when the reclining angles of the seat backs of adjacent seats differ greatly, when the gap formed between these seat backs is reduced and the occupant is pushed sideways by the lateral load, Also, the head of the occupant can be prevented from entering the gap.

Further, by setting the amount of rearward sliding by the seat back position adjusting means so that the seat on the side with a smaller reclining angle of the seat back is larger than the seat on the side with a large reclining angle, the seat back of the adjacent seat is reduced. The vehicle can be set in an intersecting state when viewed from the vehicle left-right direction, and the gap between these seat backs can be made smaller.

Further, the seat back position adjusting means is a seat slider for slidingly guiding the seat rearward of the vehicle with respect to the vehicle body floor, and normally, this seat slider is locked and unlocked by a load larger than a predetermined value in the lateral direction of the vehicle. This seat back position is configured by including a locking mechanism for controlling the seat back slider and the vehicle body floor, and restricting means for restricting the backward movement amount of the seat according to the reclining angle of the seat back. The adjusting means can be operated reliably while simplifying its structure.

Further, when a seat provided with the seat back position adjusting means is used as a front seat and a rear seat is arranged behind the front seat, the seat back position is provided between the rear seat and the vehicle body floor. By providing the rear seat moving means for moving the rear seat rearward with the operation of the adjusting means, the rear seat moves backward when the front seat is slid backward by the operation of the seat back position adjusting means, and the rear seat occupant. It is possible to secure the foot space.

[0014]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. 1 to 12 show an embodiment of the present invention, FIG. 1 is an overall perspective view showing a seat structure of a vehicle, and FIG.
FIG. 3 is a perspective view showing a lower structure of a seat, a perspective view of a main part of a lower front end of the seat, FIG. 4 is a perspective view of a lower part of a rear end of the seat, and FIG. 6 is an enlarged perspective view of a portion A in FIG. 5, FIG. 7 is an enlarged perspective view of an essential portion showing an operating state of the seat back position adjusting means, and FIG. 8 is a vehicle body floor structure under a seat. 5 is an enlarged perspective view of a portion B in FIG. 5, FIG. 10 is a schematic configuration diagram of two adjacent seats, and FIG. 11 is a schematic configuration diagram showing an operating state of two adjacent seats. FIG. 12 is a side view of the rear seat.

That is, the vehicle seat 10 shown in FIG. 1 is a three-seater seat that allows three people to sit side by side in the vehicle width direction. This vehicle seat 10 is used for the front seat. . Therefore, one seat on the vehicle right side of the vehicle seat 10 becomes the driver seat 12, and the remaining two seats become the passenger seat 14. The driver seat 12 for the one seat and the passenger seat 1 for the two seats
4 is divided from each other, and the divided driver's seat 12 and passenger's seat 14 can be independently adjusted in position by sliding forward and backward. Further, the driver's seat 12 and the passenger's seat 14 are respectively provided with reclining devices (not shown) so that the respective seat backs 16 and 18 can be independently tilted.

The driver's seat 12 is arranged on the right side of the vehicle (left side in the figure) with respect to the tunnel portion 22 of the propeller shaft running in the center of the vehicle body floor 20 in the front-rear direction, and the passenger seat 14 is located on this tunnel portion. It is arranged to extend from the upper side of 22 to the left side of the vehicle (right side in the figure). Therefore, the seat cushion 24 of the driver's seat 12 and the portion of the passenger seat 14 outside the tunnel portion 22 (this portion is temporarily assumed to be the main seat 14).
The seat cushion 26 of "a" is formed thick, while the seat cushion 28 of a portion of the passenger seat 14 located in the tunnel portion 22 (this portion is temporarily called the auxiliary seat 14b) is formed thin. The seat cushions 26 and 28 of the main seat 14a and the auxiliary seat 14b are integrally formed.

Seat belts 30 and 32 (note that the driver's seat 12, the main seat 14a, and the auxiliary seat 14b) are respectively provided.
A seat belt for the main seat 14a is provided (not shown). One end of the seat belt 30 for the driver's seat 12 is wound around a retractor (not shown) housed in the center pillar 34 on the side of the driver's seat 12, and the other end is fixed to and supported by a side sill anchor (not shown). The tongue 36 inserted through the intermediate portion of the seat belt 30 is attached to and detached from the lap anchor 38 provided at the end of the driver's seat 12 on the passenger seat 14 side. Similarly, the seat belt for the main seat 14a (not shown) is also supported by the center pillar on the opposite side so that the tongue is not attached to the main seat 1.
It is adapted to be attached to and detached from a lap anchor 40 provided between the 4a and the auxiliary seat 14b. Further, the seat belt 32 for the auxiliary seat 14b is provided at the upper end of the seat back 18 near the driver's seat 12 after being drawn out from a retractor (not shown) provided on the floor 20 below the auxiliary seat 14b. After being guided by the shoulder anchor 42, its front end is fixed to the lower end of the seat back 18, and the tongue 44 inserted into the seat belt 32 is attached to the main seat 14.
It is adapted to be attached / detached to / from the lap anchor 46 between a and a.

In the present embodiment, between the driver's seat 12 and the passenger seat 14 and the vehicle body floor 20, a predetermined or more load acting in the lateral direction of the vehicle is detected, and these seats 12 adjacent to each other are detected. Seat back position adjusting means 50 for slidingly adjusting the seats 12, 14 rearward is provided so that the positions of the seat backs 16, 18 of the seat 14 approach each other.
In the present embodiment, the seat back position adjusting means 50
2 to 9 are shown as an example of those attached to the passenger seat 14.

By the way, as described above, the driver's seat 12 and the passenger's seat 14 are provided with a reclining device (not shown), but the driver's seat 12 and the passenger's seat 14 are slid in the longitudinal direction of the vehicle in addition to the reclining device. A device is provided so that the sitting posture of the occupant can be set to an optimum state. That is, the slide device is slidably engaged with the upper rail 48 fixed to the cushion pan 27 that covers the lower sides of the seat cushions 24 and 26 as shown in FIG. And a lower rail 48a fixed to the vehicle body floor 20 side via a seat slider 52. The upper rail 48 and the lower rail 48a can be locked at any slide position.

The seat back position adjusting means 50 locks the seat slider 52, which guides the seats 12 and 14 rearward of the vehicle relative to the vehicle body floor 20, and normally locks the seat slider 52 so that a predetermined lateral direction of the vehicle. A lock mechanism 54 for unlocking by the above load, and a restricting means 56 mounted between the seat slider 52 and the vehicle body floor 20 for restricting the rearward movement amount of the seat according to the reclining angles of the seat backs 16 and 18. , And are configured.

The seat slider 52 is provided with a lower rail 60 fixedly mounted on the vehicle body panel 20 in the vehicle front-rear direction via a bracket 58, and is slidably engaged with the lower rail 60 so that the sliding device of Lower rail 48a
And an upper rail 62 fixed to the lower surface. The vehicle rear end of the upper rail 62 is connected to the vehicle body floor 20 below the rear seat (not shown) via a tension spring 64, as shown in FIG. It is biased backwards. Further, a stopper pin 66 is laterally bent and protruded from the vehicle front end of the upper rail 62, as shown in FIG.
The tension spring 64 is covered with a cover 65.

As shown in FIG. 4, the lock mechanism 54 has a dog-legged lever 70 pivotally attached to the side of the tunnel portion 22 via a bracket 68, and this lever 7
A lock pin 72 for restricting the rotation of 0 is provided. One end of the lever 70 is locked to the vehicle rear side of the stopper pin 66 while the upper rail 62 is moved forward of the vehicle against the urging force of the tension spring 64. It is held by the lock pin 72. The lock pin 72 is interlocked with a motor (not shown) via a wire, and when the motor is driven, the lock pin 72 is lifted upward to release the holding of the lever 70. The motor is operated by a sensor (not shown) that detects a predetermined or more load acting in the lateral direction of the vehicle, and the motor is driven when a large lateral load acts due to a side collision.

As shown in FIG. 5, the restricting means 56 is a stopper guide 7 for adjusting the stop positions of the seats 12 and 14 in accordance with the reclining angles of the seat backs 16 and 18.
4 and a wire 76 for transmitting the reclining angle of the seat backs 16 and 18 to the stopper guide 74. As shown in FIG. 6, the stopper guide 74 is provided with a stopper rail 78 fixed to the upper surface of the upper rail 48 of the slide device, and is formed on the lower surface of the stopper rail 78 along the vehicle front-rear direction. The stopper pin 82 can be engaged with one of the plurality of engaging portions 80, 80 ... (See FIG. 7). Stopper pin 82
Is vertically movably attached to a guide base 84 which is movably attached to the stopper rail 78. The stopper pin 82 is constantly urged upward by a spring 86, and at this upper position, the stopper pin 82 is prevented from engaging with the engaging portion 80. The guide base 84 is biased toward the front side of the vehicle by a spring (not shown). Further, the stopper guide 74 is arranged at the same position in the driver's seat 12 and the passenger seat 14.

On the other hand, the stopper pin 82 is the seat 1
The guide plate 88, which is moved rearward with 2 and 14, is inclined downward from the side surface of the tunnel portion 22 toward the vehicle rear side on the locus along which the stopper pin 82 is moved, as shown in FIG. Is projected. Then, when the stopper pin 82 is moved to the rear of the vehicle, the large diameter portion 82a formed at one end of the stopper pin 82 is brought into contact with the lower surface of the guide plate 88 (see the broken line in FIG. 7). Has become. The vehicle front end position of the guide plate 88 is set higher than the stopper pin 82 at the upper position, and the stopper pin 82 engages with the engaging portion 80 at the vehicle rear end position of the guide plate 88. Is set to a position lower than the lower position. The guide plate 88 is formed at the same position on the driver seat 12 side and the passenger seat 14 side.

The wire 76 is arranged in a tensioned state along the upper rail 48 of the slide device, and one end portion arranged on the front side of the vehicle is fixed to the guide base 84. The other end of the wire 76, which is disposed on the vehicle rear side, has the seat cushion 24, as shown in FIG.
The seat bracket 90 fixed to the side of the vehicle 26 is orbited by a pulley 94 provided at the vehicle rear end portion via an arm 92, and then coupled to the lower end portion of the reclining bracket 96. Incidentally, the reclining bracket 96
Is a seat bracket 90 having a bolt 98 at its middle portion.
The seat back frame 1 is pivotally attached to the upper end of the seat back frame 1.
The seat backs 16 and 18 are rotatable around the bolt 98. The wire 76 is supported by the guide pulley 102 on the vehicle front side of the reclining bracket 96.

By the way, a rear seat 110 is provided behind the driver's seat 12 and the front passenger seat 14 used as front seats as shown in FIG. In the rear seat 110, a slide rail 1 provided with a foot portion 112 projecting downward to be provided on the vehicle body floor 20 in order to configure a rear seat moving means.
The rear seat 110 itself is slidably attached to the vehicle 14 so that the rear seat 110 itself can move to the rear of the vehicle. A space S that allows the rear seat 110 to move is provided behind the rear seat 110 in the vehicle. Further, a tension spring 120 is provided between a bracket 116 provided on the lower side of the rear seat 110 and a bracket 118 provided on the vehicle body floor 20 and located on the vehicle rear side of the bracket 116,
The tension spring 120 biases the rear seat 110 toward the rear of the vehicle.

A slide stopper 122 is provided to prevent rearward movement of the rear seat 110 when the rear seat 110 is moved toward the front of the vehicle. The slide stopper 122 locks one of the legs 112. The slide stopper 122 is interlocked with a motor that operates the lock pin 72 of the lock mechanism 54 via a wire (not shown). When the seat slider 52 is unlocked by the lock mechanism 54 at the time of a side collision, the slide stopper 122 is rotated downward and the foot portion 1 is rotated.
It is designed to unlock 12 locks.

In the vehicle seat structure of this embodiment having the above-described structure, in the seat slider 52 of the seat back position adjusting means 50, the stopper pin 66 of the upper rail 62 is normally engaged with the lever 70 of the lock mechanism 54 in the seat slider 52. Stopped and locked, the upper rail 62 is set at the vehicle front position. Then, the driver's seat 12 and the passenger seat 14
In the slide device, the seat position is arbitrarily slid and adjusted while the seat slider 52 is locked. Further, the driver seat 12 and the passenger seat 14 are
Along with the seat position adjustment by the slide device, the reclining angles of the seat backs 16 and 18 can be arbitrarily adjusted by the reclining device.

By the way, the reclining bracket 9 depending on the reclining angles of the seat backs 16 and 18.
The rotation angle of 6 is changed, and the wire 76 is moved accordingly. That is, when the reclining angle (angle with respect to the upright state) of the seatbacks 16 and 18 is small, the amount of pulling of the wire 76 is small, and when the reclining angle is large, the wire 76 is largely pulled. Therefore, the guide base 84 of the restricting means 56 moves on the stopper rail 78 according to the movement amount of the wire 76, and when the reclining angle is small, the guide base 84 moves to the front of the vehicle of the stopper rail 78, while when the reclining angle is large. Moves to the vehicle rear side of the stopper rail 78.

When a large load, which is equal to or greater than a predetermined value, acts in the lateral direction of the vehicle at the time of a side impact, the lateral load causes the lock pin 72 of the lock mechanism 54 to be lifted upward to free the lever 70. Then, the stopper pin 66 is unlocked and the seat slider 52
The upper rail 62 is moved rearward of the vehicle by the urging force of the tension spring 64, and accordingly, both the driver seat 12 and the passenger seat 14 are moved rearward. The stopper pin 82 of the regulating means 56 is also moved rearward along with the driver seat 12 and the passenger seat 14, and the stopper pin 8
The second large-diameter portion 82a is brought into contact with a guide plate 88 protruding from the tunnel portion 22 during the movement thereof. Then, the stopper pin 82 is pushed down along the inclined surface of the guide plate 88, and is engaged with the engaging portion 80 at the portion where the guide base 84 is located. In this engaged state, the rearward movement of the driver's seat 12 and the front passenger's seat 14 is blocked and stopped.

Therefore, even if the sliding positions of the driver's seat 12 and the passenger's seat 14 are different, the stopper guides 74 and the guide plates 88 are used to stop the movement of the two seats 12 and 14, respectively. 14
The driver seat 12 and the passenger seat 1
The positions of the seat backs 16 and 18 of No. 4 are close to each other in the vehicle front-rear direction. Therefore, both seats 1
The gap formed between the seat backs 16 and 18 of 2 and 14 is reduced to prevent the head of the occupant from entering the gap even when the occupant falls sideways under the lateral load. Therefore, it is possible to improve passenger protection.

Also, the seat back 1 when a side collision occurs.
When the reclining angles of 6 and 18 are different from each other, the guide base 84 of the stopper guide 74 provided on the seat having the larger reclining angle is positioned behind the stopper rail 78 by being largely pulled by the wire 76. Therefore, when the reclining angle is large, the position where the stopper pin 82 comes into contact with the guide plate 88 and engages with the engaging portion 80 is on the vehicle rear side among the plurality of engaging portions 80, 80 .... . Therefore, the seat A having a large reclining angle as shown in FIG.
The stopper pin 82 is brought into contact with the guide plate 88 earlier than the small seat B, and the rearward movement amount L1 of the seat A is rearwardly moved by the seat A as shown in FIG. Less than the amount L2. Therefore, both seats A and B
The seat backs A1 and B1 are in a crossed state as shown in FIG. 11, and the gap δ formed between the seat backs A1 and B1 can be made smaller. still,
The seat A is one of the driver seat 12 and the passenger seat 14, and the seat B is the other of the driver seat 12 and the passenger seat 14.

Therefore, even when the reclining angles of the seat backs 16 and 18 are different between the driver's seat 12 and the passenger's seat 14, the gap δ can be set to the minimum, so that the occupant is protected during a side collision. Can be planned.

By the way, in this embodiment, the slide stopper 12 of the rear seat 110 movably attached to the driver seat 12 and the front passenger seat 14 in the rearward movement during a side collision.
2 is unlocked, and the rear seat 110 is moved backward by the tension spring 120. Therefore, even when the front driver's seat 12 and the passenger seat 14 are moved backward,
It is possible to secure a space in front of an occupant seated in the rear seat 110.

When the rear seat 110 is moved backward,
As shown in FIG. 13, by moving the side polster 130 to the front of the vehicle, the side polster 130 prevents the doors and the body panels such as fenders from collapsing and entering the room at the time of a side collision. You can protect your feet. Incidentally, as a mechanism for moving the side polster 130 forward, the rack gear 1 fixed to the seat frame 132 of the rear seat 110 as shown in FIG.
This is achieved by disposing a pinion gear 140 supported on the vehicle body floor 20 side in an engaged state between the rack gear 138 fixed to the polster frame 136 of the side polster 130 and the rack gear 138.

[0036]

As described above, according to the first aspect of the present invention.
In the vehicle seat structure shown in Fig. 2, the seat back position adjusting means is provided on the seats arranged in the vehicle width direction so that a load larger than a predetermined amount acts in the lateral direction of the vehicle during a side collision or the like. In this case, since the seats are slid backward so that the seat back positions of the adjacent seats are close to each other,
Even if the reclining angles of the seat backs of adjacent seats differ greatly, the gap formed between these seat backs is reduced, and the head of the occupant pushed laterally by the side impact. Prevent it from entering the gap,
It is possible to protect passengers in the event of a side collision.

Further, according to the second aspect of the present invention, the amount of rearward slide by the seat back position adjusting means is set so that the seat on the side where the reclining angle of the seat back is smaller is larger than the seat on the larger side. Therefore, when the seat is slid backwards, the seat backs of the adjacent seats can be set in an intersecting state when viewed from the left and right direction of the vehicle, and the gap between these seat backs can be made smaller to ensure passenger safety. Can be further improved.

Further, according to a third aspect of the present invention, the seat back position adjusting means includes a seat slider for slidingly guiding the seat rearward of the vehicle with respect to the vehicle body floor, and the seat slider is normally locked. A lock mechanism that unlocks by a predetermined or greater load in the vehicle lateral direction, and is attached between the seat slider and the vehicle body floor,
Since the control means for controlling the backward movement amount of the seat according to the reclining angle of the seat back is provided, the structure of the seat back position adjusting means is simplified and the seat is reliably operated in the event of a side collision. be able to.

Still further, according to claim 4 of the present invention,
Since the rear seat moving means is provided in the rear seat and the rear seat is moved rearward in accordance with the operation of the seat back position adjusting means, even if the front seat is moved backward due to a side collision, the feet of the rear seat occupants It has various excellent effects that space can be secured and passengers in the rear seats can be protected.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a seat structure to which the present invention is applied.

FIG. 2 is a cross-sectional perspective view of an essential part of the lower structure of the seat showing the embodiment of the present invention.

FIG. 3 is a perspective view of an essential part of a lower portion of a front end portion of a seat showing an embodiment of the present invention.

FIG. 4 is a perspective view of an essential part of a lower portion of a rear end portion of a seat showing an embodiment of the present invention.

FIG. 5 is a perspective view of a main part of a seat back position adjusting means showing an embodiment of the present invention.

FIG. 6 is an enlarged perspective view of a portion A in FIG.

FIG. 7 is an enlarged perspective view of essential parts showing an operating state of the seat back position adjusting means according to the embodiment of the present invention.

FIG. 8 is a perspective view showing a vehicle body floor structure under a seat according to an embodiment of the present invention.

9 is an enlarged perspective view of a B part in FIG.

FIG. 10 is a schematic configuration diagram of two adjacent seats to which the present invention is applied.

FIG. 11 is a schematic configuration diagram showing an operating state of two adjacent seats to which the present invention is applied.

FIG. 12 is a side view of a rear seat showing an embodiment of the present invention.

FIG. 13 is an end perspective view of a rear seat showing another embodiment of the present invention.

FIG. 14 is a sectional plan view of a rear seat end portion showing another embodiment of the present invention.

[Explanation of symbols]

10 Vehicle Seat 12 Driver's Seat 14 Passenger's Seat 16, 18 Seat Back 20 Vehicle Body Floor 50 Seat Back Position Adjusting Means 52 Seat Slider 54 Locking Mechanism 56 Restricting Means

Claims (4)

[Claims] 1. In a seat structure of a vehicle in which at least two seats are arranged close to each other in a vehicle width direction and each seat has a reclining function, a vehicle lateral direction is provided between each seat and a vehicle body floor. A seat structure for a vehicle, comprising a seat back position adjusting means for detecting a load acting above a predetermined amount and slidingly adjusting the seat rearward so that the seat back positions of adjacent seats approach each other. 2. The seat back position adjusting means increases the amount of backward sliding of a seat having a smaller reclining angle of seat backs between adjacent seats and a rearward sliding amount with respect to a seat having a larger reclining angle. 1. The vehicle seat structure according to 1. 3. The seat back position adjusting means locks the seat slider for slidingly guiding the seat rearward of the vehicle with respect to the vehicle body floor, and normally unlocks the seat slider by a predetermined load or more in the lateral direction of the vehicle. 3. A lock mechanism for locking the seat, and a restricting unit that is mounted between the seat slider and the vehicle body floor and restricts the backward movement amount of the seat according to the reclining angle of the seat back. The vehicle seat structure described. 4. A vehicle seat structure in which at least two front seats are arranged in proximity to each other in the vehicle width direction, each front seat has a reclining function, and a rear seat is installed behind these front seats. , Detecting a predetermined or more load acting in the lateral direction of the vehicle between each front seat and the vehicle body floor, and slidingly adjusting the seat rearward so that the seat back positions of the adjacent front seats approach each other. A seat back position adjusting means is provided, and a rear seat moving means for moving the rear seat backward is provided between the rear seat and the vehicle body floor in accordance with the operation of the seat back position adjusting means. Seat structure.