JP4811012B2 - Vehicle seat structure - Google Patents

Description

  The present invention relates to a vehicle seat in which a front row seat is disposed on a floor panel of a passenger compartment, and a rear row seat in which a pair of seats (separate type seats) are arranged in parallel behind the front row seat. Concerning structure.

Conventionally, as the seat structure of the vehicle in the above-described example, there are structures shown in FIGS. 27, 28, and 29. FIG.
That is, a floor panel 200 that forms the lower surface of the passenger compartment is provided, and a driver's seat 201 and a passenger seat 202 are juxtaposed side by side on the front of the floor panel 200, while the rear side of the floor panel 200 is upward. The left and right kick-up portions 203 are formed in the same height, and rear seats 204 and 205 as left and right occupant seats are arranged side by side on the kick-up portion 203. In the vehicle width direction intermediate portion, a fuel tank 206 as a vehicle auxiliary machine is disposed below the vehicle outer side.

  On the other hand, in Patent Document 1, a kick-up portion having the same height on the left and right is formed stepwise with respect to the floor panel, which includes a curved portion and an extended portion obtained by extending the curved portion as it is. Cross members extending in the vehicle width direction are provided on the vehicle outer front portion and the vehicle rear rear portion of the kick-up portion, respectively, and a rear seat is disposed on the kick-up portion, and the front and rear portions are disposed below the kick-up portion on the vehicle outer side. A fuel tank (vehicle auxiliary machine) is disclosed in which the upper surface of each cross member has a shape along the curved portion and the extension portion described above.

  In Patent Document 2, a kick-up floor portion is connected to a rear portion of a floor panel that forms a lower surface of a passenger compartment via a step portion, and a rear floor is connected to the kick-up floor portion via a rear kick-up portion. These steps, kick-up floor, rear kick-up, and rear floor are set to the same height on the left and right, and a rear seat is installed on the kick-up floor and rear kick-up as described above. On the other hand, there is disclosed a fuel tank (vehicle auxiliary machine) having a structure along the continuous shape of each of the above-described steps, kick-up floor, rear kick-up, and rear floor. Has been.

However, the conventional structure shown in FIGS. 27 to 29 and the above-mentioned Patent Documents 1 and 2 both achieve both the support rigidity of the rear seat and the utility (practicality) of the rear seat.
By the way, there is a demand for a compact vehicle with a low overall height. In this case, it is necessary to ensure the occupant's comfortability, as well as ensuring the rigidity of the vehicle body and the support rigidity of the seat. It is necessary to ensure utility.

On the other hand, Patent Document 3 discloses a rear row seat in which a seat back of a bench seat type rear seat is connected to a vehicle body using a plurality of strikers. However, as long as it is a bench seat type, a separate seat is disclosed. It is difficult to ensure utility.
Japanese Patent Laid-Open No. 6-211169 JP-A-5-627 Japanese Patent Laid-Open No. 11-263247

  Accordingly, the present invention provides a reinforcing member that extends in the vehicle width direction to the second rear row seat in order to ensure vehicle body rigidity and seat support rigidity when a pair of rear row seats having different sizes are disposed behind the front row seat. This ensures both vehicle body rigidity and seat support rigidity, and the first rear row seat is provided with a relief portion so that the reinforcing member does not interfere with the first rear row seat. An object is to provide a vehicle seat structure that can be laid out without being restricted.

The vehicle seat structure according to the present invention is a vehicle seat structure in which a front row seat is arranged on a floor panel of a passenger compartment, and a rear row seat in which a pair of seats are arranged side by side is arranged behind the front row seat. The rear row seat includes a first rear row seat and a second rear row seat for an occupant having a smaller physique than an occupant seated on the first rear row seat. In addition to being detachably fixed to the vehicle body via a reinforcing member extending in the direction, a relief portion corresponding to the reinforcing member is provided on the seat back of the first rear seat.
The above-mentioned reinforcing member may be configured to extend in the vehicle width direction from the seat back middle of the second rear row seat to the seat back middle of the first rear row seat, and the reinforcing member is intended to reduce its weight. It is desirable to form the pipe member such as a square pipe.

  According to the above configuration, when a pair of rear row seats having different sizes are disposed behind the front row seats, in order to ensure the vehicle body rigidity and the seat support stiffness, the seat back of the second rear row seats in the vehicle width direction. Since the extending reinforcing member is provided and the seat back of the second rear row seat is detachably fixed to the vehicle body via the reinforcing member, both the vehicle body rigidity and the seat supporting rigidity are secured by the reinforcing member. be able to.

  Further, the seat back of the first rear row seat is provided with a relief portion corresponding to the reinforcement member so that the reinforcement member does not get in the way, so that the mounting position of the first rear row seat is restricted by the reinforcement member. And can be laid out.

  In short, in a compact body with a low overall height, while ensuring multi-person rides with front row seats and rear row seats and ensuring the utility of the rear seats with separate type rear row seats, securing vehicle body rigidity, securing seat support rigidity, The layout freedom of the first rear row sheet can be achieved.

In one embodiment of the present invention, the escape portion is set to a recessed portion formed on the back surface of the first back seat.
According to the above configuration, since the above-described relief portion is formed in the recessed portion, the relief portion can be configured easily.

In one embodiment of the present invention, the seat back of the first rear seat includes a reclining mechanism whose position in the front-rear direction can be adjusted.
According to the said structure, according to a passenger | crew's physique, the front-back position adjustment (adjustment of the inclination angle of a seat back) of a seat back is attained, and a passenger | crew's comfort can be ensured.

In one embodiment of the present invention, the first rear row seat and the second rear row seat are configured such that the seat back lies down above each seat cushion and can be folded to substantially the same height.
According to the above configuration, when the seat backs of the first and second rear row seats are collapsed, the seat backs are folded on the respective seat cushions to have substantially the same height, so that a luggage compartment is secured at the rear. The utility of the rear seat can be ensured.

In one embodiment of the present invention, a plurality of concave portions are provided on the back surface of the seat back of the first rear row sheet so as to be separated from each other in the vertical direction.
According to the above configuration, even when the seat back of the first rear row seat is erected in the normal use state, even when the seat back is laid down on the seat cushion, the plurality of concave portions provide the reinforcement member. Interference with the seat back can be avoided.

In one embodiment of the present invention, the upper recessed portion of the plurality of recessed portions serves as a relief portion when reclining the seat back of the first rear row seat, and the lower recessed portion is the first rear row. The seat back of the seat is configured to be a relief portion of the reinforcing member when folded on the seat cushion.
According to the above configuration, when reclining the seat back of the first rear row seat, the upper recessed portion serves as the escape portion of the reinforcing member, so that appropriate reclining of the seat back is obtained, and the seat back of the first rear row seat is When folded on the seat cushion, the lower recessed portion becomes the escape portion of the reinforcing member, and the reinforcing member can be stored in the lower recessed portion.

In one embodiment of the present invention, the floor panel is provided with a kick-up portion raised upward, and the kick-up portion is arranged in parallel with the first kick-up portion and the first kick-up portion in the vehicle width direction. And a second kick-up portion that is higher than the first kick-up portion in the height direction, and a first rear row seat is disposed on the first kick-up portion, and on the second kick-up portion. A second rear row sheet is disposed.
According to the above configuration, the kick-up portion is composed of the first kick-up portion and the second kick-up portion having different heights, while ensuring both the vehicle body rigidity and the seat support rigidity. It is possible to increase the degree of freedom in the layout of seats, vehicle accessories, and the like with respect to the vehicle interior space and the vehicle exterior space above and below the up portion.

  Further, the first rear row seat is disposed on the first kick-up portion having a relatively low height (the portion where the vertical space between the first kick-up portion and the roof portion is relatively high), Since the second rear row seat is disposed on the second kick-up portion having a high height (the portion where the vertical space between the second kick-up portion and the roof portion is relatively low), each of the first and second seats The rear row seat can be appropriately laid out corresponding to the difference in the vertical space in the vehicle interior.

In one embodiment of the present invention, the rotation fulcrum of the seat back of the second rear row seat is set to be lower than the rotation fulcrum of the seat back of the first rear row seat.
According to the above configuration, the height of the rear row seat itself varies depending on the height of the kick-up portion, but the height of the pivot point of the seat back is set as described above. When this is done, the seat backs of the pair of rear row seats can be folded to substantially the same height, ensuring flatness and improving the loadability of the luggage.

In one embodiment of the present invention, a passenger seat is disposed in front of the first rear row seat, and a driver seat is disposed in front of the second rear row seat.
According to the above configuration, the space for the front row seat including the driver seat and the passenger seat can be secured in a well-balanced manner while ensuring both vehicle body rigidity and seat support rigidity. It is possible to achieve both safety and usability of the occupant in the rear row seat.

  That is, an occupant with a large physique can be seated on the rear row seat (first rear row seat) on the passenger seat side. Generally, the rear row seat (first rear row seat) on the passenger seat side is frequently used, and this rear row seat (first rear row seat) Since the seat) corresponds to the sidewalk side (so-called shoulder), it is possible to achieve both safety and usability.

In one embodiment of the present invention, vehicle auxiliary equipments having different sizes in the height direction are disposed below the vehicle interior outside the first kick-up portion and the second kick-up portion.
You may set the above-mentioned vehicle auxiliary machine in a sub tank (fuel tank) with a low height, and a main tank (fuel tank) with a high height.

  According to the above configuration, since the vehicle auxiliary machines are respectively disposed below both the first and second kick-up portions, the vehicle auxiliary machines having different sizes can be sorted and efficiently packaged.

  According to the present invention, when a pair of rear row seats of different sizes are disposed behind the front row seat, the reinforcing member extending in the vehicle width direction to the second rear row seat in order to ensure vehicle body rigidity and seat support rigidity. This ensures both vehicle body rigidity and seat support rigidity, and the first rear row seat is provided with a relief portion so that the reinforcing member does not interfere with the first rear row seat. There is an effect that the layout can be performed without any restrictions.

  For the purpose of ensuring vehicle body rigidity, supporting rigidity of the second rear row seat, and ensuring layout freedom of the first rear row seat, a front row seat is disposed on the floor panel of the passenger compartment, In a vehicle having a rear row seat in which a pair of seats are arranged side by side, the rear row seat includes a first rear row seat and a second rear row seat for an occupant having a smaller physique than an occupant seated on the first rear row seat. The seat back of the second rear row seat is detachably fixed to the vehicle body via a reinforcing member extending in the vehicle width direction, and the seat back of the first rear row seat is provided with a relief corresponding to the reinforcing member. This is realized by providing a part.

An embodiment of the present invention will be described in detail with reference to the drawings.
The drawings show a vehicle seat structure. First, a lower vehicle body structure of a vehicle will be described with reference to FIGS.

  1 to 7, a dash lower panel (dash panel) 1 that partitions the engine room E and the vehicle compartment R in the front-rear direction of the vehicle is provided, and the rear end of the lower end of the dash lower panel 1 extends substantially horizontally toward the rear. The floor panel 2 is integrally or integrally connected, and the floor panel 2 constitutes the lower surface (bottom surface) of the passenger compartment R.

The rear portion of the floor panel 2 is provided with a kick-up portion 3 (see FIG. 2) that is stepped upward. This kick-up portion 3 is the first on the passenger side Pa (see the right side of the vehicle). The kick-up unit 4 includes a first kick-up unit 4 and a second kick-up unit 5 on the driver's seat side Dr (see the left side of the vehicle) arranged in parallel in the vehicle width direction.
Moreover, as shown in a perspective view in FIG. 2, the second kick-up portion 5 is formed higher in the height direction than the first kick-up portion 4.

  Here, the first kick-up portion 4 on the passenger side Pa has a front wall portion 4a that rises upward from the floor panel 2, and a kick-up floor portion 4b that extends rearward from the front wall portion 4a.

  Further, the second kick-up portion 5 on the driver's seat side Dr has a front wall portion 5a that rises upward from the floor panel 2, and a kick-up floor portion 5b that extends rearward from the front wall portion 5a. The rising amount of the front wall portion 5 a of the second kick-up portion 5 is set to be larger than the rising amount of the front wall portion 4 a of the first kick-up portion 4.

Moreover, as shown in FIGS. 2 and 3, the first kick-up portion 4 is formed to be offset from the second kick-up portion 5 by a predetermined distance L1 in front of the vehicle.
A rear floor 7 is connected via a rear kick-up portion 6 further behind the kick-up floor portions 4b and 5b in the kick-up portion 3 described above.
On the other hand, a tunnel portion 8 is formed at the center of the floor panel 2 in the vehicle width direction so as to protrude inward of the passenger compartment R and extend in the front-rear direction of the vehicle. The tunnel portion 8 is formed between the dash lower panel 1 and the rear kick-up portion 6 so as to extend in the front-rear direction of the vehicle, and a closed cross section is formed between the tunnel portion 8 and the tunnel portion 8. A tunnel member 10 (a so-called high-mount backbone frame) that forms 9 is joined and fixed.

The above-described tunnel member 10 is a vehicle body rigid member (strength member) extending in the front-rear direction of the vehicle between the dash lower panel 1 and the rear kick-up portion 6 along the upper portion of the tunnel portion 8. The floor rigidity and vehicle body rigidity are improved.
Further, side sills 11 as strength members extending in the longitudinal direction of the vehicle are joined and fixed to both ends of the floor panel 2 in the vehicle width direction (see FIG. 3).

  The side sill 11 is a vehicle body rigid member having a side sill closed cross section that extends in the vehicle front-rear direction by joining a side sill outer, a side sill inner, and a side sill reinforcement. However, in the drawings, only the side sill inner is shown for convenience of illustration.

  As shown in FIGS. 2, 3, and 5 to 7, a center side tunnel portion 8 and left and right side sills 11, 11 are connected to the middle portion of the floor panel 2 in the front-rear direction, respectively. A pair of left and right cross members 12 and 12 (No. 2 cross member) are provided, and a closed cross section 13 extending in the vehicle width direction is formed between the cross member 12 (vehicle body rigid member) and the upper surface of the floor panel 2. In addition, vehicle body rigidity is improved.

  As shown in FIGS. 2, 3, 5, and 6, a cross member 14 (No. 3 cross member) extending in the vehicle width direction is provided on the upper surface of the front portion of the first kick-up portion 4 on the passenger seat side Pa. A closed cross section 14a extending in the same direction is formed between the upper surface of the first kick-up portion 4 and the cross member 14, thereby improving the rigidity of the vehicle body.

  As shown in FIGS. 2, 3, and 7, a cross member 15 (No. 3 cross member) extending in the vehicle width direction is provided on the upper surface of the front portion of the second kick-up portion 5 on the driver's seat side Dr. A closed cross section 15a extending in the same direction is formed between the upper surface of the second kick-up portion 5 and the cross member 15, thereby improving the rigidity of the vehicle body.

As shown in FIGS. 2 and 3, the left and right cross members 14, 15 (vehicle body rigid members) are arranged in the first kick-up portion 4 rather than the cross member 15 disposed in the front portion of the second kick-up portion 5. A cross member 14 disposed at the front of the vehicle is offset to the front of the vehicle.
Each of these cross members 14 and 15 is located inside the vehicle interior R, and the vehicle interior side end portion (inner end portion in the vehicle width direction) is connected and fixed to the vertical wall portion of the tunnel portion 8 described above. Has been.

  As shown in FIGS. 2, 3, 5, and 6, the vehicle extends in the vehicle width direction behind the first kick-up portion 4 on the passenger seat side Pa and outside the rear kick-up portion 6 and the rear floor 7. A rear cross member 16 (No. 4 cross member) is provided, and a closed cross section 16a extending in the same direction is formed between the elements 6, 7, and 16 to improve the rigidity of the vehicle body, and within the closed cross section 16a. Is provided with a substantially Z-shaped node member 17 for connecting the rear floor 7 and the rear cross member 16 in the vertical direction to further improve the rigidity of the lower vehicle body.

  As shown in FIGS. 2, 3, and 7, a rear cross member that extends in the vehicle width direction outside the rear kick-up portion 6 and the rear floor 7 is behind the second kick-up portion 5 on the driver's seat side Dr. 18 (No. 4 cross member) is provided, and a closed cross section 18a extending in the same direction is formed between the elements 6, 7, and 18 to improve the rigidity of the lower vehicle body.

  These rear cross members 16 and 18 (vehicle body rigid members) are vehicle body rigid members that extend in the vehicle width direction across the first kick-up unit 4 and the second kick-up unit 5 behind the kick-up unit 3. As shown in FIGS. 2 and 3, these rear cross members 16 and 18 are disposed behind the first kick-up portion 4 and behind the second kick-up portion 5. The rear cross member 18 is offset in the front-rear direction of the vehicle, and the rear cross members 16 and 18 are formed asymmetrically in the left-right direction.

  In this embodiment, as shown in FIGS. 2 and 3, the front portion of the rear cross member 16 on the passenger seat side Pa disposed behind the first kick-up portion 4 is located behind the second kick-up portion 5. Is arranged in front of the vehicle with respect to the front portion of the rear cross member 18 on the driver's seat side Dr.

  A rear cross member 19 (No. 5 cross member) that extends in the vehicle width direction and connects between a pair of left and right rear side frames 43 and 43, which will be described later, is provided at the rear of each of the rear cross members 16 and 18. A closed cross section 19a extending in the vehicle width direction is formed between the cross member 19 (vehicle body rigid member) and the rear floor 7 to improve the rear vehicle body rigidity. A spare tire pan (not shown) may be stepped down on the rear floor 7 behind the rear cross member 19.

On the other hand, as shown in FIGS. 2 and 4, on the lower surface of the floor panel 2, a pair of left and right floor frames 20 extending in the vehicle longitudinal direction between the side sill 11 and the tunnel portion 8 in the vehicle width direction, 20, a closed cross section 20a extending in the same direction is formed between the floor frame 20 and the lower surface of the floor panel 2 to improve the rigidity of the vehicle body.
The floor frame 20 is a vehicle body rigid member joined and fixed to the floor panel 2.

  By the way, as shown in the bottom view in FIG. 4, a transmission 21 that constitutes a power train together with the engine is disposed in the lower space outside the vehicle of the tunnel portion 8, and the output of the transmission 21 is used as a propulsion shaft. Is transmitted to the rear differential device 23 via the propeller shaft 22 and the differential output of the rear differential device 23 is transmitted to the left and right rear wheels 25 and 25 via the left and right rear wheel drive shafts 24 and 24. is doing. Here, the left and right rear wheels 25, 25 are suspended independently from each other by rear suspension devices 26, 26 (for example, double wishbone type suspension devices).

A power plant frame 27 having a substantially Z-shaped cross section and extending in the front-rear direction of the vehicle is provided between the transmission case of the transmission 21 and the differential case of the rear differential device 23.
The power plant frame 27 (so-called PPF) is for suppressing windup vibration of the rear differential device 23 while allowing movement in the roll direction from the engine drive system.

  Further, as shown in FIG. 4, the engine exhaust system includes a front exhaust pipe 28 communicating with the exhaust port of the cylinder head and the exhaust manifold, a catalyst 29, a middle exhaust pipe 30, a pre-silencer 31, a rear exhaust pipe 32. The exhaust passage 35 including the main silencer 33 and the tail pipes 34, 34 is connected, and the exhaust passage 35 is supported on the body side via a bracket (not shown), and the front exhaust pipe 28, the catalyst 29, the middle exhaust. The pipe 30 is positioned in a lower space outside the vehicle of the tunnel portion 8.

  By the way, as shown in FIGS. 3-7, the sub tank 36 (1st fuel tank) as a 1st vehicle auxiliary machine is arrange | positioned under the 1st kick-up part 4 of the passenger side Pa, and a driver's seat A main tank 37 (second fuel tank) as a second auxiliary vehicle having a large size in the height direction from the sub tank 36 is disposed below the second kick-up portion 5 on the side Dr. As shown in the figure, the sub tank 36 and the main tank 37 are configured to communicate with each other in the vehicle width direction by a substantially portal-shaped tunnel tank portion 38 that rises upward and extends in the vehicle width direction so as to secure a tank capacity. And an asymmetrical saddle type single fuel tank 39 is integrated into a unit.

Here, a raised portion 36a that rises upward along the rear surface of the rear kick-up portion 6 is formed integrally with the rear portion of the sub-tank 36 so that the tank capacity can be further increased by the raised portion 36a. It is composed.
A fuel pump 40 is attached to the upper part of the main tank 37. On the other hand, a fuel tank 39 in which the above-described sub tank 36 and main tank 37 are integrated as a unit through a tunnel tank portion 38 includes a tank band 41 as a tank support member, as shown in FIGS. It is supported on the body side through 42.

  9 is a cross-sectional view taken along line AA in FIG. 3, FIG. 10 is a cross-sectional view taken along line BB in FIG. 3, FIG. 11 is a cross-sectional view of a portion corresponding to the tunnel tank portion 38, and FIG. FIG. 13 is a cross-sectional view taken along the line D-D of FIG. 3, and as shown in FIGS. 3 and 9 to 13, the vehicle body is disposed on both sides of the lower surface of the rear floor 7. The rear side frames 43 and 43 as rigid members are joined and fixed, and the pair of left and right rear side frames 43 and 43 are extended toward the rear end of the side sill 11 toward the front of the vehicle.

  Further, as shown in FIGS. 9, 10, and 11, rear side inner panels 44, 44 are joined and fixed to the outer sides in the vehicle width direction of the first and second kick-up portions 4, 5, respectively.

  As shown in FIG. The cross members 14 and 15 as the three cross members are arranged in front of the first kick-up portion 4 because the cross member 14 on the passenger side Pa is offset from the cross member 15 on the driver side Dr. A vehicle interior side end portion (vehicle width direction inner end portion) of the cross member 14 disposed in the front portion and a vehicle interior side end portion (vehicle width direction) of the cross member 15 disposed in the front portion of the second kick-up portion 5. The inner end portion is connected to the connecting members 45 and 46 (reinforcing members) shown in FIGS. 9 and 10 so as to improve the side impact resistance.

These connect members 45, 46 are located in the tunnel portion 8, that is, outside the tunnel portion 8, as shown in cross-sectional views in FIGS. 9 and 10.
Further, as shown in a plan view in FIG. 3, both the connect members 45 and 46 have front and rear widths where the connect members 45 and 46 overlap each other, and one connect member 45 has both cross members 14 and 15. The other connecting member 46 is also configured to have a front-rear width that overlaps with both the cross members 14, 15.

One connect member 45 is bonded and fixed to the intermediate lower surface of the top deck portion of the tunnel portion 8 and the lower end vehicle exterior of the tunnel portion 8, and forms a closed section 45 a between the tunnel portion 8. ing.
The other connect member 46 is joined and fixed to the vehicle outer side of the intermediate portion of the vertical wall portion of the tunnel portion 8 and the lower surface of the vehicle outer side of the one connect member 45, and the closed cross section 46 a is interposed between the tunnel portion 8. Is forming.

  The cross members 14 and 15 are made to continue in the vehicle width direction in the above-described closed members 45 and 46 having the closed cross-sections 45a and 46a so as to improve the side impact resistance.

  Further, as shown in FIG. 14 in an exploded perspective view of the above-described two connection members 45 and 46, one of the connection members 45 is composed of an upper joining piece 45b, a middle joining piece 45c in the vertical direction, and a lower joining piece. A reinforcing member that includes 45d and connecting pieces 45e and 45f that connect the connecting pieces, that is, connecting pieces 45b and 45c, and connecting the connecting pieces 45c and 45d, and these pieces 45b to 45f are integrally formed of a metal member. is there.

  Further, the other connect member 46 has an upper joining piece 46b, a lower joining piece 46c, and a curved joining piece 46d that joins both joining pieces 46b and 46c in the vertical direction. It is the reinforcement member which integrally formed the pieces 46b-46d with the metal member.

  14, in addition to the structure shown in FIG. 14, beads 45g and 46e (for example, cross-shaped beads) extending at least in the vehicle width direction are provided on the above-mentioned connect members 45 and 46 as shown in FIG. It may be integrally formed toward the 46a side, and the bead 45g, 46e may further improve the rigidity of the vehicle body and the side impact resistance.

  As shown in a sectional view of a portion corresponding to the tunnel tank portion 38 of the fuel tank 39 in FIG. 11, the tunnel tank portion 38 that communicates the sub tank 36 and the main tank 37 in the vehicle width direction outside the tunnel portion 8. Below, a middle exhaust pipe 30 (exhaust pipe), a propeller shaft 22, and a power plant frame 27 as a third vehicle auxiliary machine are arranged.

  As shown in FIG. Each of the rear cross members 16 and 18 as the four cross members is disposed such that the front portion of the rear cross member 16 on the passenger seat side Pa is offset from the front portion of the rear cross member 18 on the driver seat side Dr in front of the vehicle. Since each of these rear cross members 16 and 18 is divided and formed in the vehicle width direction, both of these rear cross members 16 and 18 are connected in the vehicle width direction by a connect member 47 as shown in FIGS. To improve vehicle body rigidity and side impact strength.

  The above-mentioned connect member 47 is a member having a concave cross section. The connect member 47 is connected to the lower surface of the rear floor 7 to form a closed cross section 47a between the two members 47 and 47. As shown in FIGS. 12 and 13, it is connected between a rear side frame 43 having a closed section 43a structure and a connect member 47, and the other rear cross member 18 is also connected to a rear side frame 43 having a closed section 43a structure as shown in FIG. The connection member 47 is connected.

  The above-mentioned connect member 47 is No. Among the rear cross members 16 and 18 as four cross members, the rear cross members 16 and 18 having a front and rear width substantially equal to the rear cross member 16 having the wider front and rear width are divided into the vehicle width. A connection member connected continuously in a direction.

Next, the vehicle seat structure will be described in detail.
FIG. 16 is a plan view showing a state in which the rear row seats 51 and 52 and the front row seats 56 and 57 are attached to the vehicle body shown in FIG. 3, and is located on the first kick-up portion 4 on the passenger seat side Pa. A first rear seat 51 serving as a first rear seat is disposed, and the physique is larger than the physique of the occupant X (see FIG. 5) seated on the first rear seat 51 on the second kick-up portion 5 on the driver's seat side Dr. The second rear seat 52 (second rear row seat) for the occupant Y (see FIG. 7) having a small is disposed.

  Each of the first and second rear seats 51 and 52 is configured as a left and right separate seat (bucket seat) having seat cushions 51C and 52C and seat backs 51B and 52B, respectively. As shown in FIGS. 6 and 17, the seat back 51B of the first rear seat 51 includes a reclining mechanism 55 including a pivot fulcrum P1 (rotating shaft or rotating pivot) and a reclining hinge bracket 54, and the like. Centering on the support shaft P1, as shown in phantom lines in FIGS. 6 and 17, it is configured to be able to recline backward, and as shown in phantom lines in FIG. 6, it lies down and folds over the seat cushion 51C. It is configured to be possible.

  Further, the seat back 52B of the second rear seat 52 is located above the seat cushion 52C with a pivot point P2 (rotation shaft, rotation support shaft) shown in FIGS. It can be folded and folded.

  As shown in FIG. 17 together with the above-described respective pivot fulcrums P1 and P2 (so-called hinge centers), the pivot fulcrum P2 of the second rear seat 52 is positioned behind the pivot fulcrum P1 of the first rear seat 51. The pivot point P2 of the second rear seat 52 is disposed at a lower position than the pivot point P1 of the first rear seat 51. The seat backs 51B, When the seats 51B and 52C are laid down and folded, the seat backs 51B and 52B are at the height of the seat cushions 51B and 52B so as to ensure flatness.

  As shown in FIG. 16, front row seats 56 and 57 are disposed in front of the first rear seat 51 and the second rear seat 52, and the front row seats 56 and 57 are arranged in parallel in the vehicle width direction. The seat 57 is composed of a seat 57 and a passenger seat 56. A passenger seat 56 is disposed in front of the first rear seat 51, and a driver seat 57 is disposed in front of the second rear seat 52. In other words, the second rear seat 52 is disposed behind the driver seat 57, and the occupant Y having a relatively small physique can be seated on the second rear seat 52, so that the front and rear spaces of the driver seat 57 are set wide. can do.

  As shown in FIG. 5 to FIG. 7 and FIG. 16, the passenger seat 56 and the driver seat 57 are independent left and right separate seats (buckets) having seat cushions 56C and 57C, seat backs 56B and 57B, and headrests 56H and 57H, respectively.・ Sheet).

  As shown in FIG. 16, the passenger seat 56 is disposed so as to be offset from the front of the vehicle with respect to the driver seat 57, while the first rear seat 51 is more than the second rear seat 52 on the rear row seat side. It is arranged so as to be offset forward.

  Front passengers Z1 and Z2 (see FIGS. 5 and 7) larger in size than the passenger Y (see FIG. 7) can be seated on the passenger seat 56 shown in FIG. 5 and the driver seat 57 shown in FIG. Since the rear seat of the passenger side Pa, that is, the first rear seat 51, can be seated by the rear seat passenger X (see FIG. 5) substantially the same as the size of the front seat passengers Z1 and Z2, The front and rear seats 56 and the first rear seat 51 are made appropriate by the offset structure forward of the seats 56 and 51.

  Although not shown in FIGS. 5, 6, and 9 to 11 for simplification of the drawings, the kick-up floor portion 4 b of the first kick-up portion 4 on the passenger side Pa and the seat of the first rear seat 51 are omitted. As shown in FIGS. 18 and 19, a height adjustment mechanism 58 for adjusting the vertical position of the seat cushion 51C is provided between the cushion 51C and the cushion 51C.

  As shown in FIGS. 18 and 19, the height adjusting mechanism 58 uses a pair of front and rear screws 59, 59 (only one of which is shown in the drawings) and the rotational force of the rotating shaft 61 of the electric motor 60. A gear box 62 for transmission to the above, sliders 63 and 64 (two sliders 63 and 64 per screw 59) screwed to the above-mentioned screw 59, and lift-up and lift-up mounted on the lower surface of the seat cushion 51C A down bracket 65 and a pair of links 66 and 67 that pin-couple between the bracket 65 and the sliders 63 and 64; a right screw is formed on one side of the screw 59, that is, on the gear box 62 side; A left-hand screw is formed on the other side of the screw 59, that is, on the bearing member 68 side.

  When the electric motor 60 is driven in the ascending direction (lift-up direction) of the seat cushion 51C, the rotational force of the electric motor 60 is driven by a screw 59 via gears (not shown) (for example, a worm and a worm wheel) in the gear box 62. , The pair of sliders 63 and 64 move in a direction approaching each other, and the seat cushion 51C is raised from the low position shown in FIG. 18 to the high position shown in FIG. When the electric motor 60 is driven in the downward direction (lift-down direction) of the seat cushion 51C, the rotational force of the electric motor 60 is transmitted to the screw 59 via a gear (not shown) in the gear box 62, and the pair of sliders 63 , 64 move away from each other, and the seat cushion 51C is shown in FIG. The seat cushion 51C is configured to be lowered from the high position to the low position shown in FIG. 18, and the vertical position of the seat cushion 51C can be adjusted according to the occupant's physique, thereby ensuring the comfort of the occupant. .

  20 is a perspective view showing the structure of FIG. 17 as viewed from the rear of the vehicle, and FIG. 21 is a perspective view of the seat backs 51B and 52B lying down, as shown in FIGS. In addition, the seat back 52B of the second rear seat 52 on the driver's seat side Dr is configured to be fixed to the vehicle body 71 via a reinforcing member 70 extending in the vehicle width direction.

  That is, the driver's seat side Dr of the reinforcing member 70 is buried in the seat back 52B of the second rear seat 52, and the same side Dr of the reinforcing member 70 is fixed to a seat back frame (not shown) of the second rear seat 52, The reinforcing member 70 exposed from the seat back 52 </ b> B extends linearly in the vehicle width direction, and the passenger seat side Pa of the reinforcing member 70 is opposed to the seat back 51 </ b> B of the first rear seat 51.

  Here, the above-described reinforcing member 70 is a member extending in the vehicle width direction from the middle of the seat back 52B of the second rear seat 52 to the position corresponding to the middle of the seat back 51B of the first rear seat 51, and the reinforcing member 70 is reduced in weight. For the purpose, it is composed of a pipe member such as a square pipe.

In addition, tongue pieces 72 and 72 having groove portions 72a are provided integrally or integrally from the left and right ends of the above-described reinforcing member 70 toward the rear.
On the other hand, on the vehicle body 71 side, as shown in FIGS. 17, 20, and 21, curved brackets 74 that are in contact with the damper 73 of the rear suspension device 26 and whose both ends are joined to the vehicle body 71 are provided. A member support bracket 75 is joined and fixed to the inside of the bracket 74 in the vehicle width direction.

  And this member support bracket 75 and the tongue piece 72 of the reinforcement member 70 are comprised so that attachment or detachment is possible by the attachment / detachment means 76 shown in FIG. 22, FIG. The structure of the attaching and detaching means 76 and 76 for detachably attaching the tongue pieces 72 and 72 provided at both ends of the reinforcing member 70 to the member support bracket 75 is configured symmetrically between the driver seat side Dr and the passenger seat side Pa. 22 and 23 show the configuration of the driver seat side Dr.

  22 shows a state before tightening, and FIG. 23 shows a state after tightening, and the above-described attaching / detaching means 76 includes a hole 77 formed through the member support bracket 75, and the vehicle exterior side of the hole 77. And a release lever 83 integrally formed with a bolt 79, a tightening taper portion 80, a flange portion 81, and an operation lever 82. The release lever 83 is a seat back. 52B is arranged so as to be orthogonal to the movement trajectory in the front-rear direction.

  The taper portion 80 is formed so that the bolt 79 side has a small diameter and the flange portion 81 side has a large diameter. The groove 72a in the tongue piece 72 of the reinforcing member 70 is formed in a tapered shape corresponding to the tapered portion 80, and the tapered portion 80 and the tapered groove 72a constitute a taper mechanism.

  Then, with the bolt 79 screwed to the nut 78, the tongue piece 72 of the reinforcing member 70 is positioned between the member support bracket 75 and the flange portion 81 of the release lever 83 as shown in FIG. When the release lever 83 is operated in the tightening direction from this state, the taper portion 80 is pressed against the groove portion 72a and the tongue piece 72 is pressed outward in the vehicle width direction, and the tightening state of FIG. Since the release lever 83 is also operated in the same manner as the driver seat side Dr, the tongue piece 72 of the reinforcing member 70 can be fixed to the member support bracket 75 by the taper portion 80 for tightening.

  To release the tightening from the tightened state shown in FIG. 23, the release lever 83 may be operated in a loosening direction. After the loosening operation shown in FIG. 22 is completed, the reinforcing member 70 is detached from the release lever 83. Can be made.

Instead of the attaching / detaching means 76 shown in FIGS. 22 and 23, the attaching / detaching means 76 shown in FIGS. 24 and 25 may be used.
24 and 25 has a taper hole 77 corresponding to the taper portion 80 for tightening in the member support bracket 75, and the release lever 83 is shown in FIG. 25 from the state before tightening in FIG. The tongue piece 72 of the reinforcing member 70 is configured to be sandwiched between the member support bracket 75 and the flange portion 81 in addition to the tightening force by the taper portion 80 when operated in the state after tightening. If comprised in this way, size reduction of the magnitude | size of the vehicle width direction of the attachment or detachment means 76 can be achieved. 24 and 25, the same parts as those in FIGS. 22 and 23 are denoted by the same reference numerals.

By the way, as shown in FIGS. 17, 20, and 21, a plurality of recessed portions 84 that extend in the vehicle width direction up and down are provided on the back surface of the seat back 51 </ b> B of the first rear seat 51 to correspond to the reinforcing member 70. , 85 (relief portions) are formed apart from each other.
The upper recessed portion 84 is an escape portion for avoiding interference between the reinforcing member 70 and the seat back 51B when the seat back 51B of the first rear seat 51 is reclined as shown by phantom lines in FIG. The lower recessed portion 85 is provided so that the reinforcing member 70 does not obstruct the luggage space when the seat back 51B of the first rear seat 51 is folded on the seat cushion 51C as shown in FIG. , A storage portion for storing the reinforcing member 70.

  By the way, when the attaching / detaching means 76 shown in FIGS. 24 and 25 is adopted, the both end structures of the reinforcing member 70 can be configured as shown in FIG.

  That is, the reinforcing member 70 extending in the vehicle width direction includes a pipe member 70A such as a square pipe having a closed cross section 70C formed therein, and lid members 70B and 70B that are joined and fixed to the left and right ends of the pipe member 70A. is doing.

  Then, hinges 86, 86 are provided at the corners on the rear side of the above-described reinforcing member 70 (the corners located on the upper side when the seat backs 51B, 52B are laid down on the seat cushions 51C, 51C as shown in FIG. 26). The tongue pieces 72 and 72 are attached via the vias.

When the reinforcing member 70 is attached and fixed to the vehicle body 71 using the above-described attaching / detaching means 76 (see FIGS. 24 and 25), the pair of left and right tongue pieces 72 and 72 are erected as shown by solid lines in FIG. On the other hand, after the reinforcing member 70 is removed from the vehicle body 71, the seat backs 51B and 52B are laid down on the respective seat cushions 51C and 52, and the reinforcing member 70 is stored in the recessed portion 85. Thereafter, when the pair of left and right tongue pieces 72, 72 are lowered in a horizontal state as indicated by phantom lines in FIG. 26 via the hinges 86, 86, the tongue pieces 72, 72 are placed above the cargo compartment. It is possible to more effectively utilize the luggage compartment by preventing it from projecting toward the vehicle.
The seat back 52B of the second rear seat 52 is formed with a recess 52a that allows the tongue 72 to move up and down.

  In the figure, 90 is a steering wheel, 91 is an instrument panel, 92 is a roof portion, and 93 is a front wheel. In FIG. 1, reference numeral 100 denotes a load mounted in the luggage compartment when the rear row seat back is folded. Further, in the figure, arrow F indicates the front of the vehicle, arrow IN indicates the inside of the vehicle, and arrow OUT indicates the outside of the vehicle.

  Thus, in the vehicle seat structure of the above-described embodiment, the front row seats 56 and 57 are disposed on the floor panel 2 of the passenger compartment R, and a pair of seats are arranged in parallel behind the front row seats 56 and 57. A vehicle seat structure in which rear row seats 51 and 52 are provided, and the rear row seats 51 and 52 are constructed from a first rear seat 51 and an occupant X seated on the first rear seat 51 (see FIG. 5). And a second rear seat 52 for the occupant Y (see FIG. 7). The seat back 52B of the second rear seat 52 is detachably fixed to the vehicle body 71 via a reinforcing member 70 extending in the vehicle width direction. The seat back 51B of the first rear seat 51 is provided with a relief portion (refer to the recessed portions 84 and 85) corresponding to the reinforcing member 70.

  According to this configuration, when the pair of rear seats 51 and 52 having different sizes are disposed behind the front row seats 56 and 57, the seat back of the second rear seat 52 is secured in order to ensure vehicle body rigidity and seat support rigidity. 52B is provided with a reinforcing member 70 extending in the vehicle width direction, and the seat back 52B of the second rear seat 52 is detachably fixed to the vehicle body 71 via the reinforcing member 70, so that the rigidity of the vehicle body is secured by the reinforcing member 70. In addition, it is possible to achieve both the securing of the sheet support rigidity.

  In addition, the seat back 51B of the first rear seat 51 is provided with relief portions (recessed portions 84, 85) corresponding to the reinforcing member 70 so that the reinforcing member 70 does not get in the way. The reinforcing member 70 can be laid out without being restricted in its mounting position.

  In short, in a compact body with a low overall height, ensuring the rigidity of the vehicle body while ensuring multi-seater rides with the front row seats 56, 57 and the rear seats 51, 52 and the utility of the rear seats with the separate type rear seats 51, 52 In addition, the seat support rigidity can be ensured and the layout freedom of the first rear seat 51 can be achieved.

Further, the escape portion is set in recessed portions 84 and 85 formed on the back surface of the seat back 51B of the first rear seat 51.
According to this structure, since the above-mentioned relief part is formed in the recessed parts 84 and 85, this relief part can be comprised easily.

In addition, the seat back 51B of the first rear seat 51 includes a reclining mechanism 55 whose position in the front-rear direction can be adjusted.
According to this configuration, the front / rear position adjustment of the seat back 51B (adjustment of the inclination angle of the seat back 51B) can be performed according to the occupant's physique, and the comfort of the rear seat occupant X can be ensured.

Further, the first rear seat 51 and the second rear seat 52 are configured such that the seat backs 51B and 52B can lie down above the seat cushions 51C and 52C and can be folded to substantially the same height (FIG. 21). reference).
According to this configuration, when the seat backs 51B and 52B of the first and second rear seats 51 and 52 are lying down, the seat backs 51B and 52B are folded on the respective seat cushions 51C and 52C, so that they have substantially the same height. As a result, it is possible to secure a luggage compartment at the rear and to ensure the practicality of the rear seat.

Further, a plurality of recessed portions 84 and 85 are provided on the back surface of the seat back 51B of the first rear seat 51 so as to be spaced apart from each other in the vertical direction.
According to this configuration, even when the seat back 51B of the first rear seat 51 is erected in the normal use state, even when the seat back 51B is laid down on the seat cushion 51C, the plurality of recessed portions 84, By 85, interference between the reinforcing member 70 and the seat back 51B can be avoided.
Moreover, the upper recessed portion 84 among the plurality of recessed portions 84, 85 serves as a relief portion during reclining of the seat back 51 </ b> B of the first rear seat 51, and the lower recessed portion 85 corresponds to the first rear seat 51. The seat back 51B is configured to be an escape portion (storage portion) of the reinforcing member 70 when the seat back 51B is folded on the seat cushion 51C.

  According to this configuration, when reclining the seat back 51B of the first rear seat 51, the upper recessed portion 84 serves as the escape portion of the reinforcing member 70, so that an appropriate reclining of the seat back 51B is obtained and the first rear seat 51 is obtained. When the seat back 51B is folded on the seat cushion 51C, the lower recessed portion 85 becomes the escape portion (storage portion) of the reinforcing member 70, and the reinforcing member 70 is turned into the lower recessed portion 85. Can be stored.

Further, the floor panel 2 is provided with a kick-up portion 3 raised upward, and the kick-up portion 3 is arranged in parallel with the first kick-up portion 4 and the first kick-up portion 4 in the vehicle width direction. And a second kick-up portion 5 that is higher than the first kick-up portion 4 in the height direction. A first rear seat 51 is disposed on the first kick-up portion 4, and the second kick-up portion 5 A second rear seat 52 is disposed on the top.
According to this configuration, the kick-up unit 3 includes the first kick-up unit 4 and the second kick-up unit 5 having different heights while ensuring both the vehicle body rigidity and the seat support rigidity. Therefore, it is possible to increase the degree of freedom in the layout of the seats, vehicle auxiliary machines, and the like with respect to the vehicle interior space and the vehicle exterior space above and below the kick-up portions 4 and 5.

  Further, the first rear seat 51 is disposed on the first kick-up portion 4 having a relatively low height (a portion where the vertical space between the first kick-up portion 4 and the roof portion 92 is relatively high), Since the second rear seat 52 is disposed on the second kick-up portion 5 having a relatively high height (the portion where the vertical space between the second kick-up portion 5 and the roof portion 92 is relatively low), The first and second rear seats 51 and 52 can be appropriately laid out according to the difference in the vertical space in the vehicle interior.

Further, the pivot point P2 of the seat back 52B of the second rear seat 52 is set to be lower than the pivot point P1 of the seat back 51B of the first rear seat 51 (see FIG. 17).
According to this configuration, although the heights of the rear seats 51 and 52 themselves differ depending on the height of the kick-up portions 4 and 5, the heights of the pivot fulcrums P1 and P2 of the seat backs 51B and 52B are set as described above. Therefore, when the seat backs 51B and 52B are laid down, the seat backs 51B and 52B of the pair of rear seats 51 and 52 are folded to substantially the same height, so that flatness can be secured. Can be improved.

In addition, a passenger seat 56 is disposed in front of the first rear seat 51, and a driver seat 57 is disposed in front of the second rear seat 52.
According to this configuration, it is possible to secure a well-balanced space for the front row seats 56 and 57 including the driver's seat 57 and the passenger seat 56 while ensuring both vehicle body rigidity and seat support rigidity. In particular, both safety and usability of the occupant X of the first rear seat 51 can be achieved.

  That is, the rear seat occupant X having a large physique can be seated on the rear row seat (first rear seat 51) of the passenger seat side Pa. Generally, the rear row seat (first rear seat 51) of the passenger seat side Pa is frequently used. Since the seat (first rear seat 51) corresponds to the sidewalk side (so-called shoulder of the road), both safety and usability can be achieved.

Further, vehicle auxiliary equipments (see sub tank 36 and main tank 37) having different sizes in the height direction are disposed below the first kick up portion 4 and the second kick up portion 5 outside the passenger compartment. It is.
According to this configuration, since the vehicle auxiliary machines (the sub tank 36 and the main tank 37) are respectively arranged below the first and second kick-up portions 4 and 5, the vehicle auxiliary machines having different sizes are sorted. It can be packaged efficiently.
Here, when the vehicle auxiliary machine is set as a fuel tank, an appropriate tank capacity can be secured.

  Further, as disclosed in the embodiment, when the passenger seat 56 is disposed to be offset from the front of the driver seat 57, the passenger seat space is secured while ensuring the detachability of the seat back 52B of the second rear seat 52. And the space of the rear row seat (first rear seat 51) on the passenger seat side Pa can be increased, and the comfort of the rear seat occupant X seated on the first rear seat 51 can be improved.

  In other words, since the steering wheel 90 is present on the driver seat side Dr, the driver seat 57 cannot be disposed forward, but the passenger seat space is not provided on the passenger seat Pa, so that the passenger seat space is reduced. After securing, the passenger seat 56 can be disposed offset to the front, whereby the space of the rear seat (first rear seat 51) on the passenger seat side Pa can be increased.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The first rear seat of the present invention corresponds to the first rear seat 51 of the embodiment,
Similarly,
The second rear seat corresponds to the second rear seat 52,
The escape portion corresponds to the recessed portions 84 and 85,
The vehicle auxiliary machine corresponds to the sub tank 36 and the main tank 37,
The present invention is not limited to the configuration of the above-described embodiment.
For example, in the above-described embodiment, the configuration applied to the left-hand drive vehicle is exemplified, but it is needless to say that the above-described structure may be applied to the right-hand drive vehicle.

Side view of a vehicle provided with a seat structure of the present invention The perspective view which shows the lower body structure of a vehicle Plan view of FIG. Bottom view of the main part of the vehicle Side view showing the structure of the passenger side Side view showing reclining state and lying down state of seat back of first rear row seat Side view showing the structure of the driver's seat Perspective view of fuel tank FIG. 3 is a cross-sectional view taken along line AA BB cross-sectional view of FIG. Sectional view of the part corresponding to the tunnel tank CC sectional view taken along the line CC in FIG. DD sectional view taken along line D-D in FIG. Disassembled perspective view of connect member An exploded perspective view showing another embodiment of the connect member Plan view showing seat structure of vehicle Enlarged side view showing the vehicle seat structure Rear view showing the height adjustment mechanism Illustration when the seat cushion is raised The perspective view which shows the structure of FIG. 17 in the state seen from the vehicle back The perspective view which shows the folding state of the substantially same height of a seat back The top view which shows the state before fastening of the attachment / detachment means The top view which shows the state after tightening by the attachment / detachment means The top view which shows the state before the fastening of the attachment / detachment means of another Example. The top view which shows the state after the clamping | tightening by the attachment / detachment means of FIG. The top view which shows the other Example of the state which laid down the seat back Plan view showing the seat structure of a conventional vehicle Side view of the driver's seat side in FIG. Side view of passenger side in FIG.

Explanation of symbols

R ... Vehicle compartment 2 ... Floor panel 3 ... Kick-up part 4 ... First kick-up part 5 ... Second kick-up part 36 ... Sub tank (vehicle auxiliary equipment)
37 ... Main tank (vehicle auxiliary equipment)
51 ... 1st rear seat (1st rear row seat)
52. Second rear seat (second rear row seat)
51B, 52B ... Seat back 51C, 52C ... Seat cushion 55 ... Reclining mechanism 56 ... Passenger seat (front row seat)
57 ... Driver seat (front row seat)
70 ... Reinforcing member 71 ... Car body 84, 85 ... Recessed part (relief part)
P1, P2 ... Rotation fulcrum

Claims (10)

A vehicle seat structure in which a front row seat is disposed on a floor panel of a passenger compartment, and a rear row seat in which a pair of seats are arranged in parallel behind the front row seat,
The rear row seat includes a first rear row seat and a second rear row seat for an occupant having a smaller physique than an occupant seated on the first rear row seat,
The seat back of the second rear row seat is detachably fixed to the vehicle body via a reinforcing member extending in the vehicle width direction,
A vehicle seat structure in which a relief portion corresponding to the reinforcing member is provided in a seat back of the first rear seat. The vehicle seat structure according to claim 1, wherein the relief portion is set in a recessed portion formed on a back surface of the first back row seat back. The seat structure of the vehicle according to claim 1 or 2, wherein the seat back of the first rear row seat includes a reclining mechanism capable of adjusting a position in the front-rear direction. The vehicle according to any one of claims 1 to 3, wherein the first rear row seat and the second rear row seat are configured to be foldable to substantially the same height with a seat back lying above each seat cushion. Sheet structure. The vehicle seat structure according to any one of claims 1 to 4, wherein a plurality of recessed portions are provided on the back surface of the seat back of the first rear row seat so as to be spaced apart in the vertical direction. Of the plurality of recessed portions, the upper recessed portion serves as a relief portion when reclining the seat back of the first rear row seat,
The vehicle seat structure according to claim 5, wherein the lower recessed portion is configured to be a relief portion of the reinforcing member when the seat back of the first rear row seat is folded on the seat cushion. The floor panel is provided with a kick-up portion that is stepped upward, the kick-up portion being arranged in parallel with the first kick-up portion, the first kick-up portion in the vehicle width direction, and in the height direction. It consists of a second kick-up part that is higher than the first kick-up part,
The vehicle seat structure according to any one of claims 1 to 6, wherein a first rear row seat is disposed on the first kick-up portion, and a second rear row seat is disposed on the second kick-up portion. 8. The vehicle seat structure according to claim 7, wherein the pivot point of the seat back of the second rear row seat is set to be lower than the pivot point of the seat back of the first rear row seat. The vehicle seat structure according to any one of claims 1 to 8, wherein a passenger seat is disposed in front of the first rear row seat and a driver seat is disposed in front of the second rear row seat. The vehicle seat structure according to claim 7 or 9, wherein a vehicle auxiliary machine having a different size in the height direction is disposed below the vehicle interior outside the first kick-up portion and the second kick-up portion.

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