WO2021060317A1

WO2021060317A1 - Vehicle cab structure

Info

Publication number: WO2021060317A1
Application number: PCT/JP2020/035907
Authority: WO
Inventors: 遼後藤
Original assignee: いすゞ自動車株式会社
Priority date: 2019-09-27
Filing date: 2020-09-24
Publication date: 2021-04-01
Also published as: CN114450214A; JP2021054154A; JP7182081B2; CN114450214B

Abstract

In the present invention, a passage floor plate section of a floor panel 10 is disposed below a floor rear section and extends rearward from a floor front section between left and right kick-up sections and left and right floor rear sections. A fifth passage floor plate reinforcement member 61 is fixed to a lower surface of the passage floor plate section and reinforces the passage floor plate section. A lower-end section of a passage side plate reinforcement member 62 that reinforces a passage side plate section is secured to the fifth passage floor plate reinforcement member 61. Between an upper-end section of the passage side plate reinforcement member 62 and an under-frame 33, provided is a floor rear section reinforcement member 63 that connects the passage side plate reinforcement member 62 and the under-frame 33. A sheet is supported by the passage floor plate section via a sheet stand 40. A lower-end section 40b of the sheet stand 40 is secured to a region of the passage floor plate section above the fifth passage floor plate reinforcement member 61.

Description

Vehicle cab structure

This disclosure relates to the cab structure of the vehicle.

Patent Document 1 describes a floor underframe arranged at the lower part of the cab of the cab over truck. The floor underframe extends in the front-rear direction of the vehicle on both sides of the cab in the vehicle width direction. The floor underframe has a front portion that is arranged substantially horizontally on the front side of the vehicle, a rising portion that bends from the rear end of the front portion and tilts upward of the vehicle and extends upward of the vehicle, and an upper end of the rising portion. It has a rear part that bends from and extends almost horizontally to the rear of the vehicle. The floor under frame is fixed to the cab by welding or the like in a state of being in contact with the lower surface of the floor panel of the cab. The seating surface portion of the seating seat is supported by the floor panel in the front-rear direction via the seat supporting member.

Japanese Patent Application Laid-Open No. 2008-100658

In the vehicle described in Patent Document 1, the floor underframe (underframe) has a front portion, a rising portion, and a rear portion, and is in contact with the lower surface of the floor panel. That is, the floor panel is provided with a floor front portion supported by the front portion of the underframe, a kickup portion supported by the rising portion of the underframe, and a floor rear portion supported by the rear portion of the underframe. ..

By the way, depending on the vehicle, the occupant seated on the seat may want to get up from the seat and move to the rear of the seat. In this case, in the vehicle described in Patent Document 1, when the occupant moves backward from the seat, it is necessary to move from the front part of the floor to the rear part of the upper floor across the kick-up part. Movement can be cumbersome.

Further, in a vehicle in which the occupant is restrained to the seat by a seat belt, when the occupant tries to move forward due to inertia in the event of a vehicle collision or the like, a load is input from the seat to the floor panel via the seat support member. May be greatly deformed forward and upward.

Therefore, an object of the present disclosure is to provide a vehicle cab structure that can be easily moved to the rear of the seat and can secure the strength of the floor panel against the load input from the seat.

In order to solve the above problems, the vehicle cab structure of the first aspect of the present disclosure includes a floor panel, left and right underframes, a seat, a seat support member, and a floor reinforcing member. The floor panels are the front part of the floor extending rearward from the lower part of the front end of the passenger compartment, the left and right kick-up parts extending upward from the rear part of the front part of the floor while being separated from each other to the left and right, and the rear and upper parts of the front part of the floor. The left and right floor rear parts that are arranged and separated from each other to the left and right from the upper part of the left and right kick-up parts, and the left and right floor rear parts that are arranged at a height lower than the left and right floor rear parts and are left and right from the rear part of the floor front part. The aisle bottom plate that extends rearward between the kick-up parts and the left and right floor rear parts, and the left and right kick-up parts and the left and right floor rear parts and the aisle bottom plate part that stand up along the left and right edge portions of the aisle bottom plate part. It has left and right aisle side plates that block the space, and divides the lower part of the passenger compartment. The left and right underframes are arranged on both sides in the vehicle width direction below the floor panel, and are located along the lower surface of the floor panel from the front end side of the front part of the floor to the rear end side of the rear part of the left and right floors via the left and right kick-up parts. Extends and is fixed to the floor panel. The seat has a seat cushion on which the occupant sits, and is arranged above the rear part of the floor on one side of the rear part of the left and right floors. The seat support member has a lower end portion of the support member on the lower end side fixed to the aisle bottom plate portion of the floor panel and an upper end portion of the support member on the upper end side fixed to the seat cushion, from the aisle bottom plate portion. Stand up and support the seat. The floor reinforcing member includes a passage bottom plate reinforcing portion fixed to the lower surface of the passage bottom plate portion of the floor panel, and the passage bottom plate reinforcing portion extending upward from the one-sided end of the passage bottom plate reinforcing portion and extending upward from the one-sided passage side plate portion. It has a passage side plate reinforcing portion fixed to the surface of the above, and the upper end side of the passage side plate reinforcing portion is directly or indirectly connected to the underframe on one side. The lower end of the support member of the seat support member is fixed to the area above the aisle bottom plate reinforcing portion of the floor reinforcing member in the aisle bottom plate portion of the floor panel.

In the above configuration, the aisle bottom plate portion of the floor panel is arranged at a height position below the rear portion of the left and right floors, and extends rearward from the rear portion of the front portion of the floor between the left and right kick-up portions and the rear portion of the left and right floors. Seats are placed above the rear of the floor on one side on the left and right. Therefore, when the occupant in the vehicle interior stands up from the seat and tries to move to the rear of the seat, the occupant can move to the rear from the front of the floor through the aisle bottom plate. That is, when the occupant stands up from the seat and moves to the rear of the seat, the occupant does not have to move from the front of the floor to the rear of the floor across the kick-up portion, so that the occupant easily moves to the rear of the seat. be able to.

In addition, the left and right underframes are arranged on both sides in the vehicle width direction below the floor panel, and the lower surface of the floor panel is arranged from the front end side of the front part of the floor to the rear end side of the rear part of the left and right floors via the left and right kick-up parts. Since it extends along and is fixed to the floor panel, the front part of the floor, the left and right kick-up parts, and the left and right rear parts of the floor can be reinforced by the left and right underframes.

Further, the floor reinforcing member extends upward from the passage bottom plate reinforcing portion fixed to the lower surface of the passage bottom plate portion of the floor panel and the passage bottom plate reinforcing portion on the one side, and the passage side plate portion on the one side. Since it has a passage side plate reinforcing portion fixed to one side surface, the passage bottom plate portion of the floor panel and the passage side plate portion on the one side can be reinforced by the floor reinforcing member.

Further, the aisle side plate reinforcing portion of the floor reinforcing member extends upward from the one-sided end of the aisle bottom plate reinforcing portion, and the upper end side of the aisle-side plate reinforcing portion directly or indirectly with respect to the one-sided underframe. Is connected to. That is, the passage bottom plate reinforcing portion is connected to the underframe on one side via the passage side plate reinforcing portion. Further, the lower end of the support member of the seat support member is fixed to the area above the passage bottom plate reinforcing portion of the floor reinforcing member in the passage bottom plate portion of the floor panel. Therefore, the load input from the seat to the floor panel can be transmitted from the passage bottom plate reinforcing portion of the floor reinforcing member to the underframe on one side via the passage side plate reinforcing portion, so that stress concentration can be suppressed. It is possible to secure the strength of the floor panel against the load input from the seat.

Therefore, it can be easily moved to the rear of the seat, and the strength of the floor panel against the load input from the seat can be secured.

The second aspect of the present disclosure is the vehicle cab structure of the first aspect, wherein the passage bottom plate reinforcing portion of the floor reinforcing member extends in the vehicle width direction below the passage bottom plate portion of the floor panel, and the floor panel. A closed cross section is formed with the bottom plate of the passage.

In the above configuration, the aisle bottom plate reinforcing portion of the floor reinforcing member extends below the aisle bottom plate portion of the floor panel in the vehicle width direction and forms a closed cross section with the aisle bottom plate portion of the floor panel. Therefore, the rigidity of the aisle bottom plate portion of the floor panel that the occupant passes through when moving to the rear of the seat can be ensured by the aisle bottom plate reinforcing portion of the floor reinforcing member. In addition, the strength of the floor panel against the load input from the seat can be ensured.

The third aspect of the present disclosure is the vehicle cab structure of the first aspect or the second aspect, in which the upper end portion of the support member and the lower end portion of the support member of the seat support member extend in the front-rear direction. The seat support member has a front end portion of the support member on the front end side extending in the vertical direction between the upper end portion of the support member and the lower end portion of the support member. The front end of the support member of the seat support member is arranged behind the front end of the seat cushion.

In the above configuration, the front end of the support member of the seat support member is arranged behind the front end of the seat cushion. Therefore, when the occupant moves the legs from the front part of the floor to the aisle bottom plate part in order to move the occupant rearward from the seat, it is possible to prevent the occupant's legs from being caught by the front end portion of the support member of the seat support member. it can.

The fourth aspect of the present disclosure is a vehicle cab structure according to any one of the first aspect to the third aspect, and includes a connecting member. The connecting member is arranged above the aisle bottom plate portion of the floor panel, and connects the aisle side plate portion on one side or the aisle side plate portion on the one side with the seat support member.

In the above configuration, since the connecting member is arranged above the aisle bottom plate portion of the floor panel to connect the aisle side plate portion on one side or the aisle side plate portion on the one side to the seat support member, the connecting member stands up from the aisle bottom plate portion. It is possible to prevent the seat support member from falling to one side or the other side in the vehicle width direction by the connecting member.

According to the present disclosure, it is possible to easily move to the rear of the seat, and it is possible to secure the strength of the floor panel against the load input from the seat.

FIG. 1 is a side view of a vehicle cab according to an embodiment of the present disclosure. FIG. 2 is a perspective view from the rear of the cab of FIG. FIG. 3 is an exploded view of the cab. FIG. 4 is a perspective view of the floor panel. FIG. 5 is a plan view of the floor panel. FIG. 6 is a bottom view of the floor panel. FIG. 7 is a perspective view from the front of the seat stand. FIG. 8 is a perspective view from the rear of the seat stand. FIG. 9 is a perspective view from the rear of the seat stand corresponding to FIG. 8 in a state where the floor panel is omitted. FIG. 10 is a front view of the seat stand. FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG. FIG. 12 is a plan view of the front portion of the seat cushion.

Hereinafter, one embodiment of the present disclosure will be described with reference to the drawings. In each figure, FR indicates the front of the vehicle, UP indicates the upper side, and IN indicates the inner side in the vehicle width direction. Further, in the following description, the front-rear direction means the front-rear direction of the vehicle, and the left-right direction means the left-right direction in a state of facing the front of the vehicle.

As shown in FIG. 1, the vehicle 1 according to the present embodiment is an electric vehicle whose power source is an electric motor, and is a cab-over type vehicle 1 in which the cab 2 is arranged above the power source. The cab 2 is mounted above the front portion of the vehicle body frame 3. Left and right front wheels 11 (only the left front wheel 11 is shown in FIG. 1) are arranged on the left and right sides below the cab 2. A frame (in this embodiment, a packing box 4) is mounted behind the cab 2. An opening (not shown) that allows entry and exit to the luggage compartment in the packing box 4 is formed on the front surface 4a of the packing box 4. The power source of the vehicle 1 is not limited to the electric motor, but may be an engine.

As shown in FIG. 2, an opening serving as an entrance / exit 9 to the passenger compartment 5 is formed on the rear surface 2a of the cab 2. The entrance 9 of the rear surface 2a of the cab 2 and the opening of the front surface 4a of the packing box 4 are in communication with each other, and due to such communication, the luggage compartment 5 to the luggage compartment 4 (or the luggage compartment of the luggage box 4 to the passenger compartment) are communicated with each other. Direct movement to 5) is allowed.

As shown in FIGS. 1 to 3, the cab 2 is a cab 2 having a high roof type roof panel 6 that expands the passenger compartment 5 upward, and is formed in a box shape by joining a plurality of panels to each other. , The passenger compartment 5 is partitioned inside. The lower part of the passenger compartment 5 is partitioned by a floor panel 10 described later. The front of the passenger compartment 5 is partitioned by a front panel 49 that stands up along the front end portion 10a of the floor panel 10 and intersects the front-rear direction. The side of the vehicle interior 5 is partitioned by the left and right side panels 7 and the side plate portions of the roof panel 6 that stand up along the left and right side end portions 10b of the floor panel 10 and intersect with the vehicle width direction. The rear portion of the passenger compartment 5 is partitioned by a back panel 8 that stands up along the rear end portion 10c of the floor panel 10 and intersects the front-rear direction, and a rear plate portion of the roof panel 6. In the present embodiment, the doorway 9 of the rear surface 2a of the cab 2 extends from the rear end portion 10c of the floor panel 10 to the roof panel 6 side above the back panel 8, so that the back panel 8 is left and right by the doorway 9. It is composed of two

back panels

8a and 8b divided into two.

As shown in FIGS. 4 and 5, the floor panel 10 has a floor front portion 12 extending rearward from the lower front end portion of the passenger compartment 5 (front end portion 10a of the floor panel 10) and both left and right rear sides of the floor front portion 12. Left and right kick-up portions 13 extending rearward and upward from the rear portion (rear end edge 19 in this embodiment) of the floor front portion 12 and the upper portion of the left and right kick-up portions 13 (upper end edge in this embodiment). Along the left and right floor rear portions 14 extending rearward from 20), the aisle bottom plate portion 15 extending rearward from the central region of the rear portion of the floor front portion 12 in the vehicle width direction, and the left and right edge portions 15a of the aisle bottom plate portion 15. It is provided with left and right aisle side plate portions 16 that stand upright.

The floor front portion 12 is arranged in front of the front wheel 11 (see FIG. 1) of the vehicle 1 and extends over the entire left and right sides of the floor panel 10.

The left and right kick-up portions 13 are arranged above the front of the left and right front wheels 11 (see FIG. 1), are separated from each other to the left and right, and extend rearward and upward from the rear end edges 19 on both the left and right sides of the floor front portion 12.

The left and right floor rear portions 14 are arranged above the left and right front wheels 11 (see FIG. 1), are separated from each other to the left and right, and extend rearward from the upper end edges 20 of the left and right kick-up portions 13. The left and right floor rear portions 14 are located behind and above the floor front portion 12, and are arranged at substantially the same height as each other. Left and right support members 29 for supporting the rear lower end portions of the left and right side panels 7 connected to the floor panel 10 are fixed to the rear end portions of the left and right floor rear portions 14 in the vehicle width direction. The left and right support members 29 are fixed to the left and right floor rear portions 14 in a state of standing along the outer end portions of the left and right floor rear portions 14 in the vehicle width direction. The left and

right seats

17a and 17b (indicated by the alternate long and

short dash lines

17a and 17b in FIG. 5) on which the occupant sits are arranged above the left and right floor rear portions 14.

The aisle bottom plate portion 15 forms the floor surface of the aisle extending in the front-rear direction at the center of the passenger compartment 5 in the vehicle width direction (between the left and

right seats

17a and 17b). The aisle bottom plate portion 15 is arranged at a height position below the left and right floor rear portions 14 (in the present embodiment, substantially the same height position as the floor front portion 12), and the rear portion of the floor front portion 12 at the center in the vehicle width direction. It extends from the left and right kick-up portions 13 and between the left and right floor rear portions 14 to the rear end portion 10c of the floor panel 10. The rear end edge portion 15b of the passage bottom plate portion 15 partitions below the entrance / exit 9 (see FIG. 2) of the rear surface 2a of the cab 2. An inspection port 54 for servicing and inspecting a device (for example, a power source) located below the floor panel 10 is provided in a region on the left side of the center of the passage bottom plate portion 15 in the vehicle width direction. A lid 55 for closing the inspection port 54 is attached to the passage bottom plate portion 15 in a state of being mounted from above.

The left and right aisle side plate portions 16 close between the inner end edges of the left and right kick-up portions 13 and the inner end edges of the left and right floor rear portions 14 and the left and right end edge portions 15a of the aisle bottom plate portion 15. The left and right aisle side plate portions 16 extend from the inner end edge side of the front left and right kick-up portions 13 to the rear end portion 10c of the rear floor panel 10 in an upright state. The rear end edge portions 16a of the left and right aisle side plate portions 16 partition both sides of the lower end portion of the rear surface 2a of the cab 2 in the vehicle width direction.

As shown in FIG. 6, a pair of left and right underframes 33 are fixed to the lower surfaces of the floor front portion 12, the left and right kick-up portions 13, and the left and right floor rear portions 14 of the lower surface 10d of the floor panel 10. .. The left and right underframes 33 are formed in a cross-section hat shape that opens upward, and extends from the front end portion 10a side of the floor panel 10 to the rear end portion 10c along the lower surface 10d of the floor panel 10 in the front-rear direction. A closed cross section is partitioned between the lower surface and the lower surface 10d. The left and right underframes 33 are a frame front portion 34 fixed to the lower surface of the floor front portion 12, and a frame that continuously extends rearward and upward from the rear end of the frame front portion 34 and is fixed to the rear surface of the kickup portion 13. Each has a kick-up portion 35 and a frame rear portion 36 that extends continuously rearward from the rear end of the frame kick-up portion 35 and is fixed to the lower surface of the floor rear portion 14. The left and right frame kick-up portions 35 and the left and right frame rear portions 36 are arranged outside the aisle bottom plate portion 15 and the left and right aisle side plate portions 16 in the vehicle width direction. The left and right frame rear portions 36 are arranged at positions separated from the inner end edge 14a of the floor rear portion 14 in the vehicle width direction to the outside in the vehicle width direction.

A floor front reinforcing member 56 extending in the vehicle width direction is fixed between the left and right underframes 33 on the lower surface of the rear end portion of the floor front portion 12 of the lower surface 10d of the floor panel 10. The floor front reinforcing member 56 is formed in a cross-section hat shape that opens upward, forms a closed cross section extending in the vehicle width direction with the lower surface of the floor front portion 12, and reinforces the floor front portion 12. The left and right ends of the floor front reinforcing member 56 are fixed to the left and right underframes 33.

A plurality of (five in this embodiment) passage bottom plate reinforcing members 57 to 61 are fixed to the lower surface of the passage bottom plate portion 15 of the lower surface 10d of the floor panel 10.

The first passage bottom plate reinforcing member 57 among the plurality of passage bottom plate reinforcing members 57 to 61 is formed in a cross-section hat shape that opens upward, and is formed in the vehicle width direction along the lower surface of the rear end portion 15b of the passage bottom plate portion 15. And is fixed to the passage bottom plate portion 15. The first passage bottom plate reinforcing member 57 extends over the entire area of the passage bottom plate portion 15 in the vehicle width direction, forms a closed cross section extending in the vehicle width direction with the lower surface of the passage bottom plate portion 15, and forms a passage bottom plate portion 15. To reinforce. The first passage bottom plate reinforcing member 57 is arranged near the rear of the inspection port 54 of the passage bottom plate portion 15. The left and right ends of the first passage bottom plate reinforcing member 57 project to the left and right sides of the passage bottom plate portion 15.

The second passage bottom plate reinforcing member 58 out of the plurality of passage bottom plate reinforcing members 57 to 61 is formed in a cross-section hat shape that opens upward, is arranged in the vicinity of the front of the inspection port 54 of the passage bottom plate portion 15, and is arranged in the vicinity of the front of the inspection port 54 of the passage bottom plate portion 15. It extends in the vehicle width direction along the lower surface of the portion 15 and is fixed to the passage bottom plate portion 15. The second passage bottom plate reinforcing member 58 extends over the entire area of the passage bottom plate portion 15 in the vehicle width direction, forms a closed cross section extending in the vehicle width direction with the lower surface of the passage bottom plate portion 15, and forms a passage bottom plate portion 15. To reinforce.

The third passage bottom plate reinforcing member 59 of the plurality of passage bottom plate reinforcing members 57 to 61 is formed in a cross-section hat shape that opens upward, is separated forward from the second passage bottom plate reinforcing member 58, and is in front of the floor. It is arranged at a position separated rearward from the portion reinforcing member 56, extends in the vehicle width direction along the lower surface of the passage bottom plate portion 15, and is fixed to the passage bottom plate portion 15. The third passage bottom plate reinforcing member 59 extends over the entire area of the passage bottom plate portion 15 in the vehicle width direction, forms a closed cross section extending in the vehicle width direction with the lower surface of the passage bottom plate portion 15, and forms a passage bottom plate portion 15. To reinforce.

The fourth passage bottom plate reinforcing member 60 of the plurality of passage bottom plate reinforcing members 57 to 61 is formed in a cross-section hat shape that opens upward, is arranged near the right side of the inspection port 54 of the passage bottom plate portion 15, and is arranged near the right side of the inspection port 54 of the passage bottom plate portion 15. It extends in the front-rear direction along the lower surface of the portion 15 and is fixed to the passage bottom plate portion 15. The fourth passage bottom plate reinforcing member 60 extends in the front-rear direction between the first passage bottom plate reinforcing member 57 and the second passage bottom plate reinforcing member 58, and both front and rear ends thereof and the first passage bottom plate reinforcing member 57. It is fixed to the second passage bottom plate reinforcing member 58. The fourth passage bottom plate reinforcing member 60 forms a closed cross section extending in the front-rear direction with the lower surface of the passage bottom plate portion 15 to reinforce the passage bottom plate portion 15.

The fifth passage bottom plate reinforcing member (passage bottom plate reinforcing portion, floor reinforcing member) 61 among the plurality of passage bottom plate reinforcing members 57 to 61 is formed in a cross-section hat shape that opens upward, and the fourth passage bottom plate reinforcing member. It is arranged on the right side of the 60, extends in the vehicle width direction along the lower surface of the aisle bottom plate portion 15, and is fixed to the aisle bottom plate portion 15. The fifth passage bottom plate reinforcing member 61 extends from the fourth passage bottom plate reinforcing member 60 to the outside in the vehicle width direction from the right end edge portion 15a of the passage bottom plate portion 15, and is connected to the lower surface of the passage bottom plate portion 15. A closed cross section extending in the width direction is formed to reinforce the passage bottom plate portion 15.

As shown in FIGS. 4, 8 and 9, in the rear end portion 10c of the floor panel 10, in addition to the first passage bottom plate reinforcing member 57 that reinforces the passage bottom plate portion 15, the rear of the left and right passage side plate portions 16 The left and right aisle side plate reinforcing members 24 for reinforcing the ends, the left and right inner reinforcing members 25 for reinforcing the rear ends of the left and right floor rear portions 14, and the left and right outer reinforcing members 26 are fixed. The first passage bottom plate reinforcing member 57, the left and right passage side plate reinforcing members 24, the left and right inner reinforcing members 25, and the left and right outer reinforcing members 26 reinforce substantially the entire area of the rear end portion 10c of the floor panel 10 in the vehicle width direction. To do.

The left and right passage side plate reinforcing members 24 are reinforcing members that reinforce the rear ends of the left and right passage side plate portions 16 of the floor panel 10, and are formed in a cross-sectional hat shape that opens inward in the vehicle width direction, and the left and right passages. It extends in the vertical direction along the outer surface of the rear end of the side plate portion 16 in the vehicle width direction, and is fixed to the outer surface of the left and right passage side plate portions 16 in the vehicle width direction. The left and right passage side plate reinforcing members 24 form a closed cross section extending in the vertical direction between the left and right passage side plate portions 16. The lower ends of the left and right passage side plate reinforcing members 24 are fixed to both ends of the first passage bottom plate reinforcing member 57 in the vehicle width direction. In the present embodiment, the left and right connecting members 27 extending upward from the left and right passage side plate reinforcing members 24 are fixed to the left and right passage side plate reinforcing members 24. The left and right connecting members 27 connect the left and right back panel reinforcing members 28 (see FIG. 3) fixed to the

back panels

8a and 8b of the cab 2 and the left and right aisle side plate reinforcing members 24.

The left and right inner reinforcing members 25 are reinforcing members that reinforce the rear ends of the left and right floor rear portions 14 of the floor panel 10, and are formed in the shape of a cross-section hat that opens downward, and the rear ends of the left and right floor rear portions 14. It extends in the vehicle width direction along the upper surface of the portion and is fixed to the upper surfaces of the left and right floor rear portions 14. The left and right inner reinforcing members 25 form a closed cross section extending in the vehicle width direction between the left and right inner reinforcing members 25 and the upper surfaces of the left and right floor rear portions 14. The inner ends of the left and right inner reinforcing members 25 in the vehicle width direction are fixed to the upper ends of the left and right passage side plate reinforcing members 24. The outer end portions of the left and right inner reinforcing members 25 in the vehicle width direction are arranged at positions separated inward in the vehicle width direction from the inner side surfaces of the left and right support members 29 of the left and right floor rear portions 14 in the vehicle width direction.

The left and right outer reinforcing members 26 are reinforcing members that reinforce the rear ends of the left and right floor rear portions 14 of the floor panel 10, and are formed in the shape of a cross-section hat that opens downward, and the rear ends of the left and right floor rear portions 14. It extends in the vehicle width direction along the upper surface of the portion and is fixed to the upper surfaces of the left and right floor rear portions 14. The left and right outer reinforcing members 26 form a closed cross section extending in the vehicle width direction between the left and right outer reinforcing members 26 and the upper surfaces of the left and right floor rear portions 14. The left and right outer reinforcing members 26 are formed smaller than the left and right inner reinforcing members 25 so as to engage the left and right inner reinforcing members 25 from below. The outer ends of the left and right outer reinforcing members 26 in the vehicle width direction are fixed to the inner side surfaces of the left and right support members 29 of the left and right floor rear portions 14 in the vehicle width direction. The area on the inner end side of the left and right outer reinforcing members 26 in the vehicle width direction is covered from above by the left and right inner reinforcing members 25, and is engaged with the outer ends of the left and right inner reinforcing members 25 in the vehicle width direction from below. It is fixed. That is, both the left and right outer reinforcing members 26 and the left and right inner reinforcing members 25 reinforce substantially the entire rear end of the left and right floor rear portions 14 of the floor panel 10 in the vehicle width direction.

As shown in FIGS. 6 and 9, at the outer end portion on the right side of the fifth passage bottom plate reinforcing member 61, a passage side plate reinforcing member (passage side plate reinforcing portion, which reinforces the passage side plate portion 16 on the right side of the floor panel 10). The lower end of the floor reinforcing member) 62 is fixed. The passage side plate reinforcing member 62 is formed in a cross-sectional hat shape that opens inward in the vehicle width direction, extends in the vertical direction along the outer surface of the passage side plate portion 16 on the right side in the vehicle width direction, and extends in the vertical direction along the outer surface of the passage side plate portion 16 on the right side. It is fixed to the outer surface in the width direction. The passage side plate reinforcing member 62 forms a closed cross section extending in the vertical direction with the outer surface of the passage side plate portion 16 on the right side in the vehicle width direction. A floor rear reinforcing member 63 extending in the vehicle width direction is provided between the upper end of the aisle side plate reinforcing member 62 and the frame rear portion 36 of the underframe 33 on the right side.

The floor rear reinforcing member 63 is formed in a cross-section hat shape that opens downward, extends in the vehicle width direction between the upper end portion of the passage side plate reinforcing member 62 and the frame rear portion 36 of the right underframe 33, and the floor on the right side. It is fixed to the rear portion 14. The inner end of the floor rear reinforcing member 63 in the vehicle width direction is fixed to the upper end of the aisle side plate reinforcing member 62, and the outer end of the floor rear reinforcing member 63 in the vehicle width direction is attached to the frame rear 36 of the right underframe 33. It is fixed. That is, the floor rear reinforcing member 63 connects the aisle side plate reinforcing member 62 and the right underframe 33.

As shown in FIGS. 2 and 7, the left and

right seats

17a and 17b have a seat cushion 37 on which the occupant sits and a seat back 52 that stands up from the rear end of the seat cushion 37 and functions as a backrest portion of the occupant. Each has. In the present embodiment, the seat 17b on the driver's seat side (in this embodiment, the right side (one side)) is supported by both the rear portion 14 of the floor on the right side and the aisle bottom plate portion 15, and is supported on the passenger seat side (in this embodiment, the passenger seat side). The seat 17a (on the left side) is supported by the floor rear portion 14 on the left side.

The seat 17b on the right side (hereinafter, simply referred to as "seat 17b") is supported by the floor rear portion 14 and the aisle bottom plate portion 15 on the right side via the left and right slide rails 38 so as to be slidable in the front-rear direction. The seat cushion 37 of the seat 17b has a protruding region 39 that protrudes inward in the vehicle width direction from the aisle side plate portion 16 on the right side and is arranged above the aisle bottom plate portion 15. The protruding region 39 of the seat cushion 37 is supported by the aisle bottom plate portion 15 via the left slide rail 38 extending in the front-rear direction below the seat cushion 37 and the seat stand (seat support member) 40. The outer end portion of the seat cushion 37 in the vehicle width direction is supported by the right floor rear portion 14 via a right slide rail 38 (see FIG. 12) extending in the front-rear direction below the seat cushion 37. A buckle 41 for fixing the seat belt is provided at the inner end of the seat cushion 37 in the vehicle width direction.

As shown in FIGS. 7 to 9, the seat stand 40 is arranged at a position separated from the aisle side plate 16 on the right side inward in the vehicle width direction, and extends in the front-rear direction on the right side of the aisle bottom plate 15 of the floor panel 10. Stand up along the top surface of the outer edge of the car. The seat stand 40 is arranged at a position separated upward from the panel-side fixing member 42 and the panel-side fixing member 42 extending linearly in the front-rear direction along the upper surface of the aisle bottom plate portion 15 of the floor panel 10 and slides on the left side. The seat-side fixing member 43 extending linearly in the front-rear direction below the rail 38, and the front-

rear legs

44, 45 extending linearly in the vertical direction between the panel-side fixing member 42 and the seat-side fixing member 43. It is formed in a frame shape. The panel-side fixing member 42 has a front-side fixing portion 46 that is fixed to the passage bottom plate portion 15 of the floor panel 10. The front fixing portion 46 of the panel side fixing member 42 is located behind the front leg portion 44. The seat-side fixing member 43 has front and

rear fixing portions

47 and 48 fixed to the left slide rail 38, and supports the slide rail 38 from below. That is, the upper end portion (upper end portion of the support member) 40a of the seat stand 40 extends in the front-rear direction and is fixed to the seat 17 via the slide rail 38. The front fixing portion 47 of the seat side fixing member 43 is located in front of the front leg portion 44, and the rear fixing portion 48 is located behind the rear leg portion 45. The front leg portion 44 stands upward from the front end portion of the panel side fixing member 42, the upper end portion is joined to the seat side fixing member 43, and the lower end portion is joined to the panel side fixing member 42. The rear leg portion 45 stands up behind the rear end portion of the panel side fixing member 42, the upper end portion is joined to the seat side fixing member 43, and the lower end portion is joined to the panel side fixing member 42. A protrusion 53 that protrudes rearward and extends along the upper surface of the passage bottom plate 15 is provided on the rear surface side of the lower end portion of the rear leg portion 45, and is provided on the front surface side of the lower end portion of the rear leg portion 45. , The rear end portion of the panel side fixing member 42 is joined. The protruding portion 53 at the lower end of the rear leg portion 45 is provided with a rear fixing portion 50 fixed to the passage bottom plate portion 15. That is, the lower end portion (lower end portion of the support member) 40b (in the present embodiment, the panel side fixing member 42 and the protruding portion 53 of the rear leg portion 45) of the seat stand 40 extends in the front-rear direction, and the aisle bottom plate portion 15 Is fixed to. As shown in FIG. 12, the front end portion (support member front end portion) 44a of the front leg portion 44 extending in the vertical direction between the upper end portion 40a and the lower end portion 40b of the seat stand 40 is the upper end edge of the kickup portion 13. It is arranged behind the front end 37a of the seat cushion 37 in a state of being arranged behind 20 and at the rearmost position.

As shown in FIGS. 8 to 10, the seat side fixing member 43 is supported from the right floor rear portion 14 side by two front and rear stand support members (connecting members) 51 extending in the vehicle width direction. The front and rear stand support members 51 have an outer end portion 51a in the vehicle width direction fixed to the rear portion 14 of the floor on the right side and an inner end portion 51b in the vehicle width direction fixed to the seat side fixing member 43, respectively. It extends substantially horizontally in the vehicle width direction along the upper surface of the floor rear portion 14, and projects inward in the vehicle width direction from the aisle side plate portion 16 on the right side. The front and rear stand support members 51 support the seat side fixing member 43 to keep the seat stand 40 in an upright state, and prevent the seat stand 40 from falling in the vehicle width direction.

As shown in FIGS. 9 and 11, the rear fixing portion 50 of the lower end portion 40b of the seat stand 40 has a closed cross section between the aisle bottom plate portion 15 of the floor panel 10 and the fifth aisle bottom plate reinforcing member 61. It is fixed to the region 64 to be formed (the region 64 above the fifth passage bottom plate reinforcing member 61). In the present embodiment, a bolt insertion hole 67 is formed in the region 64 of the passage bottom plate portion 15. A bolt insertion hole 68 that communicates with the bolt insertion hole 67 of the aisle bottom plate portion 15 is formed in the rear fixing portion 50 of the lower end portion 40b of the seat stand 40. In the space 65 between the passage bottom plate portion 15 of the floor panel 10 and the fifth passage bottom plate reinforcing member 61, a nut support member 66 having a hat-shaped cross section that opens downward is arranged, and the fifth passage bottom plate reinforcing member 61 is arranged. Is fixed to. The nut support member 66 has an upper plate portion 66a that abuts on the lower surface of the passage bottom plate portion 15. The upper plate portion 66a of the nut support member 66 is formed with a bolt insertion hole 70 that communicates with the bolt insertion hole 67 of the passage bottom plate portion 15, and the lower surface of the upper plate portion 66a is formed so as to communicate with the bolt insertion hole 70. The nut 69 is fixed. By inserting the bolts 71 into the bolt insertion holes 68, 67, 70 from above and fastening them to the nuts 69, the rear fixing portion 50 of the lower end portion 40b of the seat stand 40 is provided with respect to the above-mentioned region 64 of the aisle bottom plate portion 15. Is fixed. Similar to the rear fixing portion 50 of the lower end portion 40b of the seat stand 40, the front fixing portion 46 also forms a closed cross section with the second aisle bottom plate reinforcing member 58 of the aisle bottom plate portion 15 of the floor panel 10. It is fixed in the area to be used.

In the above configuration, the aisle bottom plate portion 15 of the floor panel 10 is arranged at a height position below the left and right floor rear portions 14, and between the floor front portion 12 and the left and right kick-up portions 13 and between the left and right floor rear portions 14. It extends through to the doorway 9 of the rear surface 2a of the cab 2. Therefore, when the occupant seated on the

seats

17a and 17b tries to stand up from the

seats

17a and 17b and move behind the

seats

17a and 17b (for example, the doorway 9), the aisle bottom plate portion 15 from the floor front portion 12 It can pass through and move behind the

seats

17a and 17b. In this way, when the occupant seated on the

seats

17a and 17b moves rearward from the

seats

17a and 17b, it is not necessary to move from the front part 12 of the floor to the rear part 14 of the floor across the kick-up part 13. , Can be easily moved to the rear of the

seats

17a and 17b.

Further, the left and right underframes 33 extend from the front end side of the floor front portion 12 to the rear end side of the left and right floor rear portions 14 via the left and right kick-up portions 13 along the lower surface 10d of the floor panel 10. Since it is fixed to the lower surface 10d of the floor panel 10, the floor front portion 12, the left and right kick-up portions 13, and the left and right floor rear portions 14 can be reinforced by the left and right underframes 33.

Further, since a plurality of (five in this embodiment) passage bottom plate reinforcing members 57 to 61 are fixed to the lower surface of the passage bottom plate portion 15 of the floor panel 10, the passage bottom plate portion 15 is fixed to the passage bottom plate reinforcing members 57 to. It can be reinforced by 61.

Further, since the first passage bottom plate reinforcing member 57, the left and right passage side plate reinforcing members 24, the left and right inner reinforcing members 25, and the left and right outer reinforcing members 26 are fixed to the rear end portion 10c of the floor panel 10. The rear end portion 10c of the floor panel 10 can be reinforced over the entire area in the vehicle width direction.

Further, since the aisle side plate reinforcing member 62 is fixed to the aisle side plate portion 16 on the right side of the floor panel 10, the aisle side plate portion 16 on the right side can be reinforced by the aisle side plate reinforcing member 62.

Further, since the floor rear reinforcing member 63 connecting the aisle side plate reinforcing member 62 and the right underframe 33 is fixed to the floor rear portion 14 on the right side of the floor panel 10, the floor rear portion 14 on the right side is the floor rear reinforcing member. It can be reinforced by 63.

Further, the rear fixing portion 50 of the lower end portion 40b of the seat stand 40 is fixed to the region 64 forming a closed cross section between the aisle bottom plate portion 15 of the floor panel 10 and the fifth aisle bottom plate reinforcing member 61. The fifth passage bottom plate reinforcing member 61 is connected to the right underframe 33 via the passage side plate reinforcing member 62 and the floor rear reinforcing member 63, so that the floor panel 10 with respect to the load input from the seat 17b side. It is possible to secure the strength of. For example, when an occupant restrained by a seat 17b by a seat belt or the like tries to move forward due to inertia at the time of a collision of the vehicle 1, the buckle 41 is pulled forward and upward, and the aisle of the floor panel 10 is pulled through the seat stand 40. An upward load is input to the bottom plate portion 15. When an upward load is input from the seat 17b side to the aisle bottom plate portion 15 of the floor panel 10 via the seat stand 40, the load is applied from the fifth aisle bottom plate reinforcing member 61 to the aisle side plate reinforcing member 62 and the floor rear reinforcing member 63. It is transmitted to the underframe 33 on the right side via. In this way, the load input from the seat 17b side to the passage bottom plate portion 15 of the floor panel 10 can be transmitted to the underframe 33 on the right side, so that the stress concentration can be suppressed and the load input from the seat 17b side can be suppressed. It is possible to secure the strength of the floor panel 10 against the above.

Therefore, according to the present embodiment, it is possible to easily move to the rear of the

seats

17a and 17b, and it is possible to secure the strength of the floor panel 10 against the load input from the seats 17b.

Further, the front end portion 44a of the leg portion 44 on the front side of the seat stand 40 is arranged behind the front end portion 37a of the seat cushion 37 in the state of being arranged most rearward. Therefore, when the occupant moves the legs from the front floor portion 12 in front of the

seats

17a and 17b to the aisle bottom plate portion 15 on the sides of the

seats

17a and 17b in order to move the legs behind the

seats

17a and 17b. It is difficult for the occupant's legs to get caught in the front leg 44 of the seat stand 40.

Further, the front end portion 44a of the leg portion 44 on the front side of the seat stand 40 is arranged behind the upper end edge 20 of the kick-up portion 13. Therefore, when the occupant moves the legs from the front floor portion 12 in front of the kick-up portion 13 to the aisle bottom plate portion 15 inside the aisle side plate portion 16 in the vehicle width direction in order to move the legs behind the

seats

17a and 17b. In addition, the occupant's legs are unlikely to get caught in the front leg 44 of the seat stand 40.

Further, the front and rear stand support members 51 have a vehicle width direction outer end portion 51a fixed to the right floor rear portion 14 and a vehicle width direction inner end portion 51b fixed to the seat side fixing member 43, respectively. Since the seat side fixing member 43 is supported and the seat stand 40 is held in an upright state, it is possible to prevent the seat stand 40 from falling in the vehicle width direction by the front and rear stand support members 51.

Further, since the seat stand 40 is arranged at a position separated inward from the aisle side plate portion 16 on the right side in the vehicle width direction, as shown in FIG. 10, another is placed between the seat stand 40 and the aisle side plate portion 16 on the right side. Device 72 (for example, an electrical unit, etc.) can be arranged. Further, since the seat stand 40 is formed in a frame shape by the panel side fixing member 42, the seat side fixing member 43, and the front and

rear legs

44, 45, another device 72 is placed in the frame of the seat stand 40. Can be placed.

In the present embodiment, the outer end portions 51a of the front and rear stand support members 51 for holding the upright state of the seat stand 40 in the vehicle width direction are fixed to the rear portion 14 of the floor on the right side, but the present invention is not limited to this. , The outer end portion 51a of the front and rear stand support members 51 in the vehicle width direction may be fixed to the aisle side plate portion 16 on the right side. Further, in the present embodiment, the inner end portions 51b of the front and rear stand support members 51 in the vehicle width direction are fixed to the seat side fixing member 43 of the seat stand 40, but the present invention is not limited to this, and the seat stand 40 is not limited to this. If the area is above the passage bottom plate portion 15 of the floor panel 10, the inner end portions 51b of the front and rear stand support members 51 in the vehicle width direction are fixed to other portions (for example, front and

rear legs

44, 45, etc.). You may.

Further, in the present embodiment, the front and rear stand support members 51 for holding the upright state of the seat stand 40 are provided, but the number of the stand support members 51 provided is not limited to two, and one or three. The above stand support member 51 may be provided. Alternatively, the stand support member 51 may not be provided.

Further, in the present embodiment, the seat 17b is attached to the floor panel 10 so as to be slidable back and forth, but it may be attached so as not to be slidable. In this case, the front end portion 44a of the leg portion 44 on the front side of the seat stand 40 may be arranged behind the front end portion 37a of the seat cushion 37 attached to the floor panel 10.

Further, in the present embodiment, the plurality of passage bottom plate reinforcing members 57 to 61 are formed in the shape of a cross-section hat that opens upward, but the shape of the plurality of passage bottom plate reinforcing members 57 to 61 is not limited to this. Other shapes (for example, rectangular tubular shape) may be used as long as the passage bottom plate portion 15 of the floor panel 10 can be reinforced.

Further, in the present embodiment, the first passage bottom plate reinforcing member 57, the left and right passage side plate reinforcing members 24, the left and right inner reinforcing members 25, and the left and right outer reinforcing members 26 are formed in a cross-section hat shape. The cross-sectional shape of the floor panel 10 is not limited to this, and may be another shape (for example, a rectangular tubular shape) as long as the rear end portion 10c of the floor panel 10 can be reinforced.

Further, in the present embodiment, the frame rear portions 36 of the left and right underframes 33 are arranged at positions separated from the inner end edge 14a of the floor rear portion 14 in the vehicle width direction to the outside in the vehicle width direction, but the present invention is limited to this. Instead, the frame rear portions 36 of the left and right underframes 33 may be arranged along the inner edge 14a of the floor rear portion 14 in the vehicle width direction. In this case, the upper end portion of the aisle side plate reinforcing member 62 and the frame rear portion 36 of the under frame 33 on the right side may be directly connected without passing through the floor rear portion reinforcing member 63.

Further, in the present embodiment, the seat stand (seat support member) 40 is formed in a frame shape by the panel side fixing member 42, the seat side fixing member 43, and the front and

rear legs

44, 45. The shape of the above is not limited to this, and may be another shape as long as it can stand up from the passage bottom plate portion 15 of the floor panel 10 and support the sheet 17b. For example, it may be a rod-shaped seat support member that stands up from the aisle bottom plate portion 15 of the floor panel 10, or a plate-shaped seat support member that stands up from the aisle bottom plate portion 15 of the floor panel 10 and intersects the vehicle width direction. It may be a member.

Further, in the present embodiment, the seat stand 40 is provided below the seat 17b on the right side, but the present invention is not limited to this, and the seat stand 40 is provided below the seat 17a on the left side, or on the left and right sides. It may be provided below both the

sheets

17a and 17b. Even in this case, the fifth aisle bottom plate reinforcing member 61 below the seat stand 40 is connected to the left underframe 33 or to the left and right underframes 33.

Further, in the present embodiment, the passage side plate reinforcing member (passage side plate reinforcing portion, floor reinforcing member) 62 is fixed to the fifth passage bottom plate reinforcing member (passage bottom plate reinforcing portion, floor reinforcing member) 61, and the passage side plate reinforcing member 62 is fixed. The upper end side of the is connected to the underframe 33, but the present invention is not limited to this. For example, the passage side plate reinforcing member 62 is fixed to the second passage bottom plate reinforcing member 58 instead of the fifth passage bottom plate reinforcing member 61, or the fifth passage bottom plate reinforcing member 61 and the second passage bottom plate reinforcing member 58. The passage side plate reinforcing member 62 may be fixed to both sides, and the upper end side of the passage side plate reinforcing member 62 may be connected to the underframe 33. In this case, the second passage bottom plate reinforcing member 58 functions as a passage bottom plate reinforcing portion of the floor reinforcing member.

Further, in the present embodiment, the floor front reinforcing member 56 is provided at the rear end of the floor front 12, but the floor front reinforcing member 56 may not be provided.

Further, in the present embodiment, the five passage bottom plate reinforcing members 57 to 61 are provided, but at least the fifth passage bottom plate reinforcing member 61 may be provided.

Further, in the present embodiment, the nut support member 66 is provided in the space 65 between the aisle bottom plate portion 15 of the floor panel 10 and the aisle bottom plate reinforcing member 61, and the lower end portion 40b of the seat stand 40 is provided with the aisle bottom plate portion. Although it is fastened and fixed to the area 64 of 15, the method of fixing the lower end portion 40b of the seat stand 40 to the aisle bottom plate portion 15 is not limited to this, and can be fixed by various methods.

Further, in the present embodiment, the cab 2 is provided with a high roof type roof panel 6 that expands the passenger compartment 5 upward, but the present invention is not limited to this, and a roof panel having a normal height is provided in the cab 2. You may.

Further, in the present embodiment, an entrance / exit 9 is provided on the rear surface 2a of the cab 2, and the passage bottom plate portion 15 of the floor panel 10 is used as a passage from the floor front portion 12 to the entrance / exit 9 (or from the entrance / exit 9 to the floor front portion 12). However, it is not limited to this. For example, the aisle bottom plate portion 15 of the floor panel 10 is placed in a region behind the left and

right seats

17a and 17b (or from the left and

right seats

17a and 17b) without providing an entrance 9 on the rear surface 2a of the cab 2. May be a passage from the rear area to the front part of the floor 12).

Although the present disclosure has been described above based on the above-described embodiment, the present disclosure is not limited to the contents of the above-described embodiment, and of course, it can be changed as appropriate without departing from the present disclosure. That is, it goes without saying that all other embodiments, examples, operational techniques, and the like made by those skilled in the art based on this embodiment are included in the scope of the present disclosure.

This application is based on a Japanese patent application filed on September 27, 2019 (Japanese Patent Application No. 2019-177073), the contents of which are incorporated herein by reference.

The vehicle cab structure according to the present disclosure can be widely applied to vehicles such as trucks.

1: Vehicle 2: Cab 5: Car room 10: Floor panel 12: Floor front 13: Left and right kick-up parts 14: Left and right floor rear parts 15: Aisle bottom plate 16: Left and right aisle side plates 17b: Seat 33: Left and right Underframe 37: Seat cushion 40: Seat stand (seat support member)
40a: Upper end of the seat stand (upper end of the support member)
40b: Lower end of seat stand (lower end of support member)
44: Front leg 44a: Front end of front leg (front end of support member)
51: Stand support member (connecting member)
61: Fifth passage bottom plate reinforcing member (passage bottom plate reinforcing portion, floor reinforcing member)
62: Passage side plate reinforcement member (passage side plate reinforcement part, floor reinforcement member)

Claims

The front part of the floor extending rearward from the lower part of the front end of the passenger compartment, the left and right kick-up parts extending upward from the rear part of the front part of the floor while being separated from each other to the left and right, and the rear and upper parts of the front part of the floor are arranged. The left and right floor rear parts extending rearward from the upper part of the left and right kick-up parts in a state of being separated from each other to the left and right, and the left and right floor rear parts are arranged at a height position below the left and right floor rear parts and from the rear part of the floor front part. The aisle bottom plate extending rearward between the left and right kick-up portions and between the left and right floor rear portions, and the left and right kick-up portions and the left and right floor rear portions standing up along the left and right edge portions of the aisle bottom plate portion. A floor panel that has left and right aisle side plate portions that block the space between the aisle bottom plate portion and the aisle bottom plate portion and that partitions the lower part of the passenger compartment.
It is arranged on both sides below the floor panel in the vehicle width direction, and is arranged along the lower surface of the floor panel from the front end side of the floor front portion to the rear end side of the left and right floor rear portions via the left and right kick-up portions. The left and right underframes that extend and are fixed to the floor panel,
A seat that has a seat cushion on which an occupant sits and is arranged above the rear part of the floor on one side of the rear parts of the left and right floors.
It has a lower end portion of a support member on the lower end side fixed to the aisle bottom plate portion of the floor panel and an upper end portion of the support member on the upper end side fixed to the seat cushion, and stands up from the aisle bottom plate portion. And the seat support member that supports the seat,
A passage bottom plate reinforcing portion fixed to the lower surface of the passage bottom plate portion of the floor panel, and the one side surface of the passage side plate portion extending upward from the one side end portion of the passage bottom plate reinforcing portion. The aisle side plate reinforcing portion is fixed to the aisle side plate reinforcing portion, and the floor reinforcing member whose upper end side of the aisle side plate reinforcing portion is directly or indirectly connected to the underframe on the one side is provided.
A vehicle cab structure in which the lower end of the support member of the seat support member is fixed to an area above the aisle bottom plate reinforcing portion of the floor reinforcing member in the aisle bottom plate portion of the floor panel.
The vehicle cab structure according to claim 1.
The aisle bottom plate reinforcing portion of the floor reinforcing member extends in the vehicle width direction below the aisle bottom plate portion of the floor panel and forms a closed cross section with the aisle bottom plate portion of the floor panel. ..
The vehicle cab structure according to claim 1 or 2.
The upper end of the support member and the lower end of the support member of the seat support member extend in the front-rear direction.
The seat support member has a front end portion of a support member on the front end side extending in the vertical direction between the upper end portion of the support member and the lower end portion of the support member.
The front end portion of the support member of the seat support member is a vehicle cab structure arranged behind the front end of the seat cushion.
The vehicle cab structure according to any one of claims 1 to 3.
A vehicle cab structure that is arranged above the aisle bottom plate portion of the floor panel and includes a connecting member that connects the aisle side plate portion on one side or the aisle side plate portion on one side to the seat support member.