CN114450213A

CN114450213A - Floor structure of vehicle

Info

Publication number: CN114450213A
Application number: CN202080067838.6A
Authority: CN
Inventors: 后藤辽
Original assignee: Isuzu Motors Ltd
Current assignee: Isuzu Motors Ltd
Priority date: 2019-09-27
Filing date: 2020-09-24
Publication date: 2022-05-06
Also published as: JP7219420B2; WO2021060355A1; JP2021054158A

Abstract

The floor panel (10) comprises: a floor front section (12) extending rearward from the lower front end of the vehicle compartment; left and right kick portions (13) which are disposed on left and right sides behind the floor front portion (12) and extend rearward and upward from the rear portion of the floor front portion (12); left and right floor rear parts (14) extending rearward from upper parts of the left and right kick-up parts (13); a tunnel floor section (15) that extends rearward from the central region in the vehicle width direction of the rear section of the floor front section (12); and left and right passage side plate sections (16) that rise along left and right end edge sections of the passage bottom plate section (15). The passage floor reinforcing members (57), (58), and (59) extend along the lower surface of the passage floor section (15) over the entire region of the passage floor section (15) in the vehicle width direction, are fixed to the passage floor section (15), and reinforce the passage floor section (15).

Description

Floor structure of vehicle

Technical Field

The present disclosure relates to a floor structure of a vehicle.

Background

Patent document 1 describes a motor home. This motor home is a so-called flat-head type vehicle in which an engine is mounted below a cab in front of a vehicle body. In this caravan, an opening is formed in substantially the entire area of the rear surface of the cab, and an opening is also formed in substantially the entire area of the front surface of the cargo compartment. In this way, in the motor home, the rider can freely move from the cab to the cargo compartment or from the cargo compartment to the cab.

Prior art documents

Patent literature

Patent document 1: japanese laid-open patent publication No. 7-61375

Disclosure of Invention

Technical problem to be solved by the invention

However, in a vehicle of a flat head type as described in patent document 1, there are cases where: a kick portion is provided on a floor panel of a cab, a rear portion of a floor behind the kick portion is located above a front portion of the floor ahead of the kick portion, and a seat on which a passenger sits is provided at the rear portion of the floor. In this case, the passenger places his feet on the front part of the floor in a seated state, and moves from the front part of the floor across the kick-up portion and toward the rear part of the floor toward the opening while moving from the cab (vehicle compartment) to the cargo compartment. In this way, when the passenger goes from the front portion of the vehicle compartment to the rear portion of the vehicle compartment, the passenger needs to move from the front portion of the floor over the kick-up portion to the upper rear portion of the floor, and therefore, the passenger may have a complicated backward movement. Further, if a passage for allowing passengers to pass therethrough is provided in the floor panel in order to facilitate rearward movement in the vehicle compartment, it is necessary to ensure strength against a load input from the passenger side when the passage passes therethrough in the floor panel.

An object of the present disclosure is to provide a floor structure of a vehicle, which can easily move forward and backward in a vehicle compartment and can secure the strength of a floor panel.

Means for solving the problems

A floor structure of a vehicle of a first aspect of the present disclosure includes a floor panel and a passage reinforcing member. The floor panel has: a floor front portion extending rearward from a lower portion of a front end of the vehicle compartment; left and right kick portions extending upward from a rear portion of the front portion of the floor panel in a state of being separated left and right from each other; left and right floor rear portions which are disposed rearward and upward of the floor front portion and extend rearward from upper portions of the left and right kick-up portions in a state of being separated from each other in the left-right direction; a passage bottom plate portion disposed at a height lower than the left and right floor rear portions, extending rearward from the rear portion of the floor front portion between the left and right kick-up portions and between the left and right floor rear portions; and left and right tunnel side plate portions rising along left and right end edge portions of the tunnel bottom plate portion and closing gaps between the left and right kick-up portions and left and right floor rear portions and the tunnel bottom plate portion, the floor panel defining a lower portion of the vehicle compartment. The passage reinforcing member extends along the lower surface of the passage bottom plate portion of the floor panel over the entire region of the passage bottom plate portion in the vehicle width direction, and is fixed to the lower surface of the passage bottom plate portion to reinforce the passage bottom plate portion.

In the above configuration, since the passage bottom plate portion of the floor panel is disposed at a height lower than the left and right floor rear portions and extends rearward from the rear portion of the floor front portion between the left and right kick-up portions and between the left and right floor rear portions, the passenger in the vehicle compartment can pass over the passage bottom plate portion between the left and right floor rear portions from the floor front portion and move rearward of the vehicle compartment. Therefore, when the passenger moves from the floor front portion to the rear of the vehicle compartment, the passenger can move to the rear of the floor without crossing the kick portion from the floor front portion, and therefore, the passenger can easily move forward and backward in the vehicle compartment.

Further, the passage reinforcing member extends along the lower surface of the passage bottom plate portion of the floor panel over the entire region of the passage bottom plate portion in the vehicle width direction, and is fixed to the lower surface of the passage bottom plate portion to reinforce the passage bottom plate portion, so that the strength of the floor panel with respect to a load input from the passenger side at the time of the forward and backward movement in the vehicle compartment can be ensured by the passage reinforcing member.

Therefore, the front-rear movement in the vehicle compartment can be easily performed, and the strength of the floor panel can be ensured.

A second aspect of the present disclosure is the vehicle floor structure of the first aspect, wherein the passage reinforcing member forms a closed cross section extending in the vehicle width direction with the passage floor portion of the floor panel.

In the above configuration, the passage reinforcing member forms a closed cross section extending in the vehicle width direction between the passage reinforcing member and the passage bottom plate portion of the floor panel, and therefore the strength of the floor panel with respect to a load input from the passenger side at the time of the forward and backward movement in the vehicle compartment can be ensured by the passage reinforcing member.

A third aspect of the present disclosure is the floor structure of the vehicle of the first or second aspect described above, including the other pathway reinforcement member and the cover member. The other passage reinforcing member is disposed at a position separated from the passage reinforcing member toward one side in the front-rear direction, extends along the lower surface of the passage bottom plate portion of the floor panel over the entire region of the passage bottom plate portion in the vehicle width direction, and is fixed to the lower surface of the passage bottom plate portion to reinforce the passage bottom plate portion. An opening is formed in a region between the passage reinforcing member and another passage reinforcing member in the passage bottom plate portion of the floor panel. The cover member is attached to an upper surface of the passage bottom plate portion of the floor panel. The cover member extends at least from above the passage reinforcing member to above the other passage reinforcing member in the front-rear direction, and closes the opening.

In the above configuration, since the opening is formed in the area between the passage reinforcing member and the other passage reinforcing member in the passage bottom plate portion of the floor panel, the opening can be used as an inspection opening for a device or the like disposed below the floor panel.

Further, since the cover member that closes the opening is attached to the upper surface of the passage bottom plate portion of the floor panel and extends at least from above the passage reinforcing member to above the other passage reinforcing member in the front-rear direction, the load when the occupant steps on the cover member when the occupant moves forward and backward in the vehicle compartment can be received by the passage bottom plate portion of the floor panel, the passage reinforcing member, and the other passage reinforcing member. In this way, the cover member that closes the opening can be supported from below not only by the passage floor portion of the floor panel but also by the passage reinforcing members and the other passage reinforcing members that are disposed on both the front and rear sides of the opening, and therefore, even if the opening is provided in the passage floor portion, the strength of the floor panel with respect to the load input from the passenger side at the time of the forward and backward movement in the vehicle compartment can be ensured.

A fourth aspect of the present disclosure is the vehicle floor structure of the third aspect, wherein a plurality of cover reinforcing portions extending in the front-rear direction are provided in a region of the cover member exposed downward from the opening.

In the above configuration, since the plurality of cover reinforcing portions extending in the front-rear direction are provided in the region of the cover member exposed downward from the opening, the rigidity of the region of the cover member exposed downward from the opening can be ensured by the plurality of cover reinforcing portions.

Further, since the plurality of cover reinforcing portions extend in the front-rear direction, the load when the occupant steps on the cover member during the front-rear movement in the vehicle compartment can be transmitted to the passage reinforcing member and the other passage reinforcing member side via the plurality of cover reinforcing portions. Therefore, the strength of the cover member with respect to the load input from the passenger side at the time of the forward and backward movement in the vehicle compartment can be ensured.

A fifth aspect of the present disclosure is the vehicle floor structure according to the first or second aspect, wherein the passage bottom plate portion, the left and right passage side plate portions, and the passage reinforcing member of the floor panel are formed separately from the floor front portion, the left and right kick-up portions, and the left and right floor rear portions of the floor panel, and are fixed to the floor front portion, the left and right kick-up portions, and the left and right floor rear portions in a unitized state as one component.

In the above configuration, the passage bottom plate portion and the left and right passage side plate portions in the floor panel are formed separately from the floor front portion, the left and right kick-up portions, and the left and right floor rear portions, and therefore, unlike a case where the floor panel is integrally formed using a mold or the like having a complicated shape, the floor panel can be manufactured at low cost. For example, the floor front portion, the left and right kick portions, and the left and right floor rear portions can be manufactured at low cost by cutting out the kick portion of the floor panel (the floor panel having the floor front portion, the kick portion, and the floor rear portion) and the vehicle width direction center portion of the floor rear portion of a general vehicle that does not require the passage bottom plate portion and the left and right passage side plate portions.

Further, the passage bottom plate portion, the left and right passage side plate portions, and the passage reinforcing member of the floor panel are fixed to the floor front portion, the left and right kick-up portions, and the left and right floor rear portions in a unitized state as one component, so that the assembling work can be simplified.

Effects of the invention

According to the floor structure of the present disclosure, the forward and backward movement in the vehicle compartment can be easily performed, and the strength of the floor panel can be ensured.

Drawings

Fig. 1 is a side view of a cab of a vehicle according to an embodiment of the present disclosure.

Fig. 2 is a perspective view of the cab of fig. 1 as viewed from the rear.

Fig. 3 is an exploded view of the cab.

Fig. 4 is a perspective view of the floor panel.

Fig. 5 is a top view of the floor panel.

Fig. 6 is a bottom view of the floor panel.

Fig. 7 is a view in section from VII to VII in fig. 6.

Fig. 8 is a sectional view taken along line VIII-VIII of fig. 5.

Fig. 9 is an explanatory view of assembly of the floor panel.

Detailed Description

Hereinafter, an embodiment of the present disclosure will be described based on the drawings. IN the drawings, FR denotes the front of the vehicle, UP denotes the upper side, and IN denotes the inside IN the vehicle width direction. In the following description, the front-rear direction refers to the front-rear direction of the vehicle, and the left-right direction refers to the left-right direction in a state of being directed toward the front of the vehicle.

As shown in fig. 1, a vehicle 1 according to the present embodiment is an electric vehicle in which a power source is an electric motor, and is a flat-head vehicle 1 in which a cab 2 is disposed 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 are disposed on left and right sides below cab 2 (only left front wheel 11 is shown in fig. 1). A rack (a cargo box 4 in the present embodiment) is mounted behind the cab 2. An opening (not shown) through which the cargo compartment in the cargo box 4 can be inserted and removed is formed in the front surface 4a of the cargo box 4. The power source of the vehicle 1 is not limited to the electric motor, and may be an engine.

As shown in fig. 2, an opening serving as a doorway 9 to the vehicle compartment 5 is formed in the rear surface 2a of the cab 2. The doorway 9 of the rear surface 2a of the cab 2 communicates with the opening of the front surface 4a of the cargo box 4, and direct movement from the vehicle compartment 5 to the cargo compartment 4 (or from the cargo compartment 4 to the vehicle compartment 5) is permitted by this communication.

As shown in fig. 1 to 3, the cab 2 is a cab 2 having a high-roof panel 6 that expands a vehicle compartment 5 upward, and is formed in a box shape by joining a plurality of panels to each other, defining the vehicle compartment 5 inside. The lower side of the vehicle compartment 5 is defined by a floor panel 10 described later. The front of the vehicle compartment 5 is defined by a front panel 49 that stands along the front end portion 10a of the floor panel 10 and intersects the front-rear direction. The side of the vehicle compartment 5 is defined by left and right side panels 7 rising along left and right side end portions 10b of the floor panel 10 and intersecting the vehicle width direction, and a side panel portion of the roof panel 6. The rear of the vehicle compartment 5 is defined by a rear panel 8 rising along the rear end portion 10c of the floor panel 10 and intersecting the front-rear direction, and a rear panel 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 10c of the floor panel 10 to the roof panel 6 side above the rear panel 8, and therefore the rear panel 8 is constituted by 2

rear panels

8a and 8b divided into 2 pieces on the left and right by the doorway 9.

As shown in fig. 4 and 5, the floor panel 10 includes: a floor front portion 12 extending rearward from a lower front end portion of the vehicle compartment 5 (a front end portion 10a of the floor panel 10); left and right kick portions 13 disposed on left and right sides behind the floor front portion 12 and extending rearward and upward from a rear portion (rear end edge 19 in the present embodiment) of the floor front portion 12; left and right floor rear portions 14 extending rearward from upper portions (upper end edges 20 in the present embodiment) of the left and right kick-up portions 13; a passage floor portion 15 extending rearward from a central region in the vehicle width direction of a rear portion of the floor front portion 12; and left and right passage side plate portions 16 rising along left and right end edge portions 15a of the passage bottom plate portion 15.

The floor front portion 12 is disposed forward of the front wheels 11 (see fig. 1) of the vehicle 1, and extends over the entire left and right regions of the floor panel 10. In the present embodiment, a cutout 18 cut out from the front to the rear is formed in the center in the vehicle width direction on the rear end edge 19 side of the floor front portion 12 (see fig. 9).

The left and right kick portions 13 are disposed above and in front of the left and right front wheels 11 (see fig. 1), are spaced apart from each other in the left-right direction, and extend rearward and upward from rear end edges 19 on both left and right sides of the floor front portion 12. The vehicle-widthwise inner end edges 13a (see fig. 9) of the left and right kick-up portions 13 extend continuously rearward and upward from the notch 18 of the floor front portion 12.

The left and right floor rear portions 14 are disposed above the left and right front wheels 11 (see fig. 1), are spaced apart from each other, 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 rearward and upward of the floor front portion 12, and are arranged at substantially the same height position. The vehicle-widthwise inner end edges 14a (see fig. 9) of the left and right floor rear portions 14 extend continuously rearward from the inner end edges 13a of the left and right kick-up portions 13. Left and right support members 29 are fixed to rear end portions of outer end portions in the vehicle width direction of the left and right floor rear portions 14, and the left and right support members 29 support rear lower end portions of the left and right side panels 7 connected to the floor panel 10. The left and right support members 29 are fixed to the left and right rear floor sections 14 in a state of standing along outer end portions in the vehicle width direction of the left and right rear floor sections 14. Left and

right seats

17a, 17b (indicated by two-

dot chain lines

17a, 17b in fig. 5) on which passengers sit are disposed above the left and right floor rear portions 14, respectively.

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

right seats

17a and 17 b). The passage floor portion 15 is disposed at a height position below the left and right floor rear portions 14 (substantially the same height position as the floor front portion 12 in the present embodiment), passes through between the left and right kick-up portions 13 and between the left and right floor rear portions 14 from a rear portion of the vehicle width direction center of the floor front portion 12, and extends to the rear end portion 10c of the floor panel 10. Rear end edge 15b of passage floor 15 defines a lower portion of doorway 9 (see fig. 2) of rear surface 2 of cab 2. An inspection opening (opening) 54 for performing maintenance inspection of a device (e.g., a power source or the like) located below the floor panel 10 is provided in a region of the passage floor portion 15 on the left side of the vehicle width direction center. A cover (cover member) 55 for closing the inspection port 54 is mounted on the passage bottom plate 15 from above.

The left and right passage side plate portions 16 close between the inner end edges 13a of the left and right kick-up portions 13 and the inner end edges 14a of the left and right floor rear portions 14 and the left and right end edge portions 15a of the passage bottom plate portion 15. The left and right passage side plate portions 16 extend from the inner end edge 13a sides of the front left and right kick-up portions 13 to the rear end portion 10c of the rear floor panel 10 in a state of rising along the left and right end edge portions 15a of the passage bottom plate portion 15. Rear end edge portions 16a of the left and right passage side plate portions 16 define both vehicle width direction sides of a lower end portion of the doorway 9 (see fig. 2) of the rear surface 2a of the cab 2.

As shown in fig. 6, a pair of left and right lower frames 33 are fixed to the lower surfaces of the floor front portion 12, the left and right kick portions 13, and the left and right floor rear portions 14 in the lower surface 10d of the floor panel 10. The left and right lower frames 33 are formed in a hat-shaped cross section opening upward, and extend from the front end 10a side to the rear end 10c of the floor panel 10 in the front-rear direction along the lower surface 10d of the floor panel 10, defining a closed cross section with the lower surface 10d of the floor panel 10. The left and right lower frames 33 each have: a frame front 34 fixed to a lower surface of the floor front 12; a frame kick-up portion 35 continuously extending upward and rearward from a rear end of the frame front portion 34 and fixed to a rear surface of the kick-up portion 13; and a frame rear portion 36 that extends continuously rearward from a rear end of the frame kick-up portion 35 and is fixed to a lower surface of the floor rear portion 14. The left and right kick-up portions 35 and the left and right frame rear portions 36 are disposed on the vehicle width direction outer side of the passage bottom plate portion 15 and the left and right passage side plate portions 16. The left and right rear frame portions 36 are disposed at positions spaced outward in the vehicle width direction from the vehicle width direction inner end edges 14a of the rear floor portion 14.

A tunnel floor reinforcement member 56 extending in the vehicle width direction between the left and right under frames 33 is fixed to a lower surface of a rear end portion of the floor front portion 12 among the lower surfaces 10d of the floor panel 10. The tunnel floor reinforcement member 56 is formed in a hat-shaped cross section that opens upward, and forms a closed cross section extending in the vehicle width direction with the lower surface of the floor front portion 12, thereby reinforcing the floor front portion 12. Both right and left end portions of the tunnel floor reinforcing member 56 are fixed to the right and left lower frames 33.

A plurality of (5 in the present embodiment) passage floor reinforcing members 57 to 61 are fixed to the lower surface of the passage floor 15 in the lower surface 10d of the floor panel 10.

The first tunnel floor reinforcing member (tunnel reinforcing member or other tunnel reinforcing member) 57 of the plurality of tunnel floor reinforcing members 57 to 61 is formed in a hat shape in cross section that opens upward, extends in the vehicle width direction along the lower surface of the rear end portion 15b of the tunnel floor 15, and is fixed to the tunnel floor 15. The first tunnel floor reinforcing member 57 extends over the entire region of the tunnel floor 15 in the vehicle width direction, and forms a closed cross section extending in the vehicle width direction with the lower surface of the tunnel floor 15 to reinforce the tunnel floor 15. The first passage bottom plate reinforcing member 57 is disposed in the vicinity of the rear of the inspection opening 54 of the passage bottom plate portion 15. Both right and left end portions of the first passage floor reinforcing member 57 protrude to both right and left sides of the passage floor portion 15.

The second passage floor reinforcing member (the other passage reinforcing member or the passage reinforcing member) 58 of the plurality of passage floor reinforcing members 57 to 61 is formed in a hat shape in cross section (see fig. 7) opening upward, is disposed in the vicinity of the front of the inspection opening 54 of the passage floor 15, extends in the vehicle width direction along the lower surface of the passage floor 15, and is fixed to the passage floor 15. That is, the inspection port 54 of the passage bottom plate portion 15 is formed in the passage bottom plate portion 15 in the area between the first passage bottom plate reinforcing member 57 and the second passage bottom plate reinforcing member 58. The second passage floor reinforcing member 58 extends over the entire area of the passage floor 15 in the vehicle width direction, and forms a closed cross section extending in the vehicle width direction with the lower surface of the passage floor 15 to reinforce the passage floor 15.

A third tunnel floor reinforcing member (tunnel reinforcing member) 59 of the plurality of tunnel floor reinforcing members 57 to 61 is formed in a hat shape in cross section that opens upward, is disposed at a position that is separated forward from the second tunnel floor reinforcing member 58 and separated rearward from the tunnel floor reinforcing member 56, extends in the vehicle width direction along the lower surface of the tunnel floor 15, and is fixed to the tunnel floor 15. The third passage floor reinforcement member 59 extends over the entire region of the passage floor 15 in the vehicle width direction, and forms a closed cross section extending in the vehicle width direction with the lower surface of the passage floor 15 to reinforce the passage floor 15.

The fourth passage floor reinforcing member 60 of the plurality of passage floor reinforcing members 57 to 61 is formed in a hat shape in cross section that opens upward, is disposed in the vicinity of the right side of the inspection opening 54 of the passage floor 15, extends in the front-rear direction along the lower surface of the passage floor 15, and is fixed to the passage floor 15. The fourth passage floor reinforcing member 60 extends in the front-rear direction between the first passage floor reinforcing member 57 and the second passage floor reinforcing member 58, and both front and rear end portions are fixed to the first passage floor reinforcing member 57 and the second passage floor reinforcing member 58. The fourth passage floor reinforcing member 60 forms a closed cross section extending in the front-rear direction with the lower surface of the passage floor 15, and reinforces the passage floor 15.

The fifth tunnel floor reinforcement member 61 of the plurality of tunnel floor reinforcement members 57 to 61 is formed in a hat shape in cross section that opens upward, is disposed on the right side of the fourth tunnel floor reinforcement member 60, extends in the vehicle width direction along the lower surface of the tunnel floor 15, and is fixed to the tunnel floor 15. The fifth tunnel floor reinforcement member 61 extends from the fourth tunnel floor reinforcement member 60 to the vehicle width direction outer side of the right end edge 15a of the tunnel floor 15, and forms a closed cross section extending in the vehicle width direction with the lower surface of the tunnel floor 15, thereby reinforcing the tunnel floor 15.

As shown in fig. 2, 5, and 9, the rear end portion 10c of the floor panel 10 is fixed with left and right passage side plate reinforcing members 24 that reinforce the rear end portions of the left and right passage side plate portions 16, left and right inner reinforcing members 25 that reinforce the rear end portions of the left and right floor rear portions 14, and left and right outer reinforcing members 26, in addition to the first passage bottom plate reinforcing member 57 that reinforces the passage bottom plate portion 15. The first tunnel floor reinforcement member 57, the left and right tunnel side plate reinforcement members 24, the left and right inner reinforcement members 25, and the left and right outer reinforcement members 26 reinforce substantially the entire region of the rear end portion 10c of the floor panel 10 in the vehicle width direction.

The left and right passage side plate reinforcing members 24 are reinforcing members that reinforce the rear end portions of the left and right passage side plate portions 16 of the floor panel 10, are formed in a hat-shaped cross section that opens inward in the vehicle width direction, extend in the up-down direction along the vehicle width direction outer side surfaces of the rear end portions of the left and right passage side plate portions 16, and are fixed to the vehicle width direction outer side surfaces of the left and right passage side plate portions 16. The left and right passage side plate reinforcing members 24 form a closed cross section extending in the vertical direction between the passage side plate portions 16. The lower end portions of the left and right passage side panel reinforcing members 24 are fixed to both ends of the first passage bottom panel reinforcing member 57 in the vehicle width direction. In the present embodiment, left and right coupling 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 coupling members 27 couple left and right rear panel reinforcing members 28 (see fig. 3) fixed to the

rear panels

8a, 8b of the cab 2 and the left and right passage side panel reinforcing members 24.

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

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

As shown in fig. 6, the lower end portion of a passage side plate reinforcing member 62 that reinforces the passage side plate portion 16 on the right side of the floor panel 10 is fixed to the outer end portion on the right side of the fifth passage bottom plate reinforcing member 61. The passage side plate reinforcing member 62 is formed in a hat shape in cross section that opens inward in the vehicle width direction, extends in the up-down direction along the vehicle width direction outer side surface of the right passage side plate portion 16, and is fixed to the vehicle width direction outer side surface of the right passage side plate portion 16. The passage side plate reinforcing member 62 has a closed cross section extending in the vertical direction between the passage side plate portion 16 on the right side and the vehicle width direction outer side surface. A floor rear reinforcing member 63 extending in the vehicle width direction is provided between the upper end portion of the passage side panel reinforcing member 62 and the frame rear portion 36 of the lower frame 33 on the right side.

The floor rear reinforcing member 63 is formed in a hat-shaped cross section that opens downward, extends in the vehicle width direction between the upper end of the passage side panel reinforcing member 62 and the frame rear portion 36 of the right under frame 33, and is fixed to the right floor rear portion 14. The vehicle-width-direction inner end portion of the floor rear reinforcing member 63 is fixed to the upper end portion of the passage side plate reinforcing member 62, and the vehicle-width-direction outer end portion of the floor rear reinforcing member 63 is fixed to the frame rear portion 36 of the right under frame 33. The floor rear reinforcement member 63 links the passage side plate reinforcement member 62 and the right lower frame 33. That is, the upper end portion of the passage side plate reinforcing member 62 is indirectly coupled to the right lower frame 33 via the floor rear reinforcing member 63.

A passage side plate reinforcing member 73 that reinforces the passage side plate portion 16 on the left side is provided in a region of the passage bottom plate portion 15 on the side of the inspection opening 54. The passage side plate reinforcing member 73 is formed in a hat shape in cross section that opens inward in the vehicle width direction, extends in the up-down direction along the vehicle width direction outer side surface of the left passage side plate portion 16, and is fixed to the vehicle width direction outer side surface of the left passage side plate portion 16. The passage side plate reinforcing member 73 has a closed cross section extending in the vertical direction between the closed cross section and the vehicle width direction outer side surface of the left passage side plate portion 16. The lower end portion of the passage-side plate reinforcing member 73 is disposed in the vicinity of the side of the inspection opening 54 of the passage bottom plate portion 15. A floor rear reinforcing member 74 extending in the vehicle width direction is provided between the upper end portion of the passage side panel reinforcing member 73 and the frame rear portion 36 of the lower frame 33 on the left side.

The floor rear reinforcing member 74 is formed in a hat-shaped cross section that opens downward, extends in the vehicle width direction between the upper end portion of the passage side panel reinforcing member 73 and the frame rear portion 36 of the left under frame 33, and is fixed to the left floor rear portion 14. The vehicle-width-direction inner end portion of the floor rear reinforcing member 74 is fixed to the upper end portion of the passage side plate reinforcing member 73, and the vehicle-width-direction outer end portion of the floor rear reinforcing member 74 is fixed to the frame rear portion 36 of the left under frame 33. The floor rear reinforcement member 74 links the passage side plate reinforcement member 73 and the lower frame 33 on the left side.

As shown in fig. 2 and 5, the left and

right seats

17a and 17b each include a seat cushion 37 on which a passenger sits, and a seat back 52 rising from a rear end portion of the seat cushion 37 and functioning as a backrest portion of the passenger. In the present embodiment, the driver seat side (right side) seat 17b is supported by both the right floor rear portion 14 and the passage floor portion 15, and the passenger seat side (left side) seat 17a is supported by the left floor rear portion 14.

The right-side seat 17b (hereinafter, simply referred to as "seat 17 b") is supported from below by the right-side floor rear portion 14 and the passage floor portion 15. The seat cushion 37 of the seat 17b has a protruding region 39, and the protruding region 39 is disposed above the passage bottom plate 15 so as to protrude further inward in the vehicle width direction than the passage side plate 16 on the right side. The protruding region 39 of the seat cushion 37 is supported by the passage floor portion 15 via a seat bracket 40 disposed below the seat cushion 37. The vehicle-widthwise outer end portion of the seat cushion 37 is supported by the right floor rear portion 14.

As shown in fig. 4 and 5, the seat holder 40 is formed in a frame shape by a panel-side fixing member 42, a seat-side fixing member 43, and front and

rear leg portions

44 and 45, the panel-side fixing member 42 linearly extends in the front-rear direction along the upper surface of the passage bottom portion 15 of the floor panel 10, the seat-side fixing member 43 is disposed at a position separated upward from the panel-side fixing member 42 and supports the seat cushion 37, and the front and

rear leg portions

44 and 45 linearly extend in the up-down direction between the panel-side fixing member 42 and the seat-side fixing member 43. The seat bracket 40 is disposed at a position separated inward in the vehicle width direction from the right passage side plate portion 16, and stands along the upper surface of the right outer end portion of the passage bottom plate portion 15 of the floor panel 10 in a state of extending in the front-rear direction. The front end side of the panel-side fixing member 42 of the seat bracket 40 is fixed to an area above the second passage floor reinforcement member 58 in the passage floor portion 15, and the rear end side is fixed to an area above the fifth passage floor reinforcement member 61 in the passage floor portion 15. The seat side fixing member 43 is supported from the right floor rear portion 14 side by front and rear 2 bracket support members 51 extending in the vehicle width direction. The front and rear bracket support members 51 connect the right floor rear portion 14 and the seat side fixing member 43, and support the seat side fixing member 43.

As shown in fig. 5, 6, and 8, a cover 55 for closing the inspection opening 54 is mounted on the passage bottom plate 15 from above. The cover 55 is formed in a size capable of closing the inspection opening 54 from above. The front end portion of the cover 55 is disposed forward of the inspection opening 54 and fixed in a state of overlapping with an area above the second passage floor reinforcing member 58 in the passage floor portion 15 from above. The rear end portion of the cover 55 is disposed rearward of the inspection opening 54 and fixed in a state of overlapping with an upper region of the first passage floor reinforcement member 57 from above. The left end of the cover 55 is disposed on the left side of the inspection opening 54 and extends in the front-rear direction along the vehicle width direction inner surface of the left passage side plate 16. The right end of the cover 55 is disposed on the right side of the inspection opening 54, and extends in the front-rear direction from above in a state of overlapping with the region above the fourth passage floor reinforcement member 60 in the passage floor portion 15. In the present embodiment, the cover 55 is formed by overlapping and joining 2 plate-

like members

75, 76 that intersect in the vertical direction. The upper and lower plate-

like members

75, 76 are formed to have substantially the same size. A plurality of (5 in the present embodiment) protrusions (a plurality of cover reinforcing portions) 77 extending in the front-rear direction in a state of protruding downward are formed in a region of the lower plate-like member 76 exposed downward from the inspection port 54. The plurality of projections 77 extend over substantially the entire region in front and rear of the inspection opening 54 while being separated from each other in the vehicle width direction.

Next, the production of the floor panel 10 will be described. As shown in fig. 9, the floor panel 10 is formed by attaching the passage unit 22 to the floor main body 21.

The floor main body 21 integrally has a floor front portion 12, left and right kick portions 13, and left and right floor rear portions 14. In the present embodiment, the floor main body 21 is formed by cutting out the kick portion of the floor panel (the floor panel in which the kick portion rises from the entire region in the vehicle width direction of the rear portion of the floor front portion 12 and the floor rear portion extends rearward from the entire region in the vehicle width direction of the rear portion of the kick portion) and the vehicle width direction center portion of the floor rear portion of a general flathead vehicle having no passage floor portion 15. Left and right support members 29 and left and right outer reinforcement members 26 are fixed to vehicle width direction outer end portions of rear end portions of the left and right floor rear portions 14 of the floor main body 21 (only the right outer reinforcement member 26 is shown in fig. 9).

The passage unit 22 is a unit formed by integrating the passage bottom plate portion 15, the left and right passage side plate portions 16, 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, the left and right connecting members 27, and the seat holder 40 as one component, and is formed independently of the floor main body 21. The first fixing portion 30 is provided on the passage bottom plate portion 15 of the floor panel 10, and the first fixing portion 30 is fixed in a state of overlapping with an end edge portion of the cutout portion 18 of the floor front portion 12 from above. Left and right second fixing portions 31 and left and right third fixing portions 32 are provided on the left and right passage side plate portions 16 of the floor panel 10, the left and right second fixing portions 31 are fixed in a state of overlapping the front surfaces of the left and right kick-up portions 13 from the front, and the left and right third fixing portions 32 are fixed in a state of overlapping the upper surface of the floor rear portion 14 from above. The passage unit 22 is fixed to the floor main body 21 in a state of being placed from above.

In the above configuration, the passage bottom plate portion 15 of the floor panel 10 is disposed at a height lower than the left and right floor rear portions 14, and extends rearward from the floor front portion 12 between the left and right kick-up portions 13 and between the left and right floor rear portions 14. Therefore, when the passenger seated in the

seats

17a and 17b is raised from the

seats

17a and 17b and tries to move to the rear of the

seats

17a and 17b (for example, the doorway 9), the passenger can pass through the passage bottom plate 15 from the floor front portion 12 and move to the rear of the

seats

17a and 17 b. As described above, when the passengers seated in the

seats

17a and 17b move rearward of the vehicle compartment 5 (rearward of the

seats

17a and 17 b), the passengers can move from the floor front portion 12 to the floor rear portion 14 without riding over the kick-up portion 13, and therefore can easily move forward and backward in the vehicle compartment 5.

Further, passage floor reinforcing members 57 to 59 are fixed to the lower surface of the passage floor 15 of the floor panel 10. Since the passage floor reinforcing members 57 to 59 extend along the lower surface of the passage floor 15 over the entire region of the passage floor 15 in the vehicle width direction and are fixed to the lower surface of the passage floor 15 to reinforce the passage floor 15, the strength of the floor panel 10 against the load input from the passenger side during the forward and backward movement in the vehicle compartment 5 can be ensured by the passage reinforcing members 57 to 59.

Further, since the passage floor reinforcing members 57 to 59 form a closed cross section extending in the vehicle width direction with the passage floor 15, the strength of the floor panel 10 against a load input from the passenger side at the time of the forward and backward movement in the vehicle compartment 5 can be ensured by the passage reinforcing members 57 to 59.

In addition, the inspection port 54 of the passage bottom plate portion 15 is formed in the passage bottom plate portion 15 in an area between the first passage bottom plate reinforcing member 57 and the second passage bottom plate reinforcing member 58. The first passage bottom plate reinforcing member 57 is disposed in the vicinity of the rear of the inspection opening 54 of the passage bottom plate portion 15, and the second passage bottom plate reinforcing member 58 is disposed in the vicinity of the front of the inspection opening 54 of the passage bottom plate portion 15. Therefore, even if the inspection opening 54 is provided in the passage bottom plate 15, the front and rear of the inspection opening 54 can be reinforced by the first passage bottom plate reinforcing member 57 and the second passage bottom plate reinforcing member 58.

Further, a front end portion of the cover 55 that closes the inspection opening 54 of the passage bottom plate portion 15 is fixed in a state of overlapping with an area above the second passage bottom plate reinforcing member 58 in the passage bottom plate portion 15 from above, and a rear end portion of the cover 55 is disposed rearward of the inspection opening 54 and fixed in a state of overlapping with an area above the first passage bottom plate reinforcing member 57 from above. Therefore, the load when the occupant steps on the cover 55 during the forward and backward movement in the vehicle compartment 5 can be received by the passage floor portion 15, the first passage floor reinforcement member 57, and the second passage floor reinforcement member 58 of the floor panel 10. As described above, since the cover 55 can be supported from below not only by the passage floor portion 15 but also by the first passage floor reinforcing member 57 and the second passage floor reinforcing member 58 disposed on both the front and rear sides of the inspection port 54, even if the passage floor portion 15 is provided with the inspection port 54, the strength of the floor panel 10 with respect to the load input from the passenger side at the time of the front-rear movement in the vehicle compartment 5 can be ensured.

Therefore, according to the present embodiment, the front-rear movement in the vehicle compartment 5 can be easily performed, and the strength of the floor panel 10 can be ensured.

Further, a plurality of projections 77 extending in the front-rear direction in a state of projecting downward are formed on a region of the lower plate-like member 76 of the cover 55 which is exposed downward from the inspection opening 54. Therefore, the plurality of projections 77 can ensure the rigidity of the region of the cover 55 exposed downward from the inspection port 54.

Further, since the plurality of projections 77 of the cover 55 extend over substantially the entire region in the front and rear of the manhole 54 in a state of being separated from each other in the vehicle width direction, a load when the passenger steps on the cover 55 at the time of the front and rear movement in the vehicle compartment 5 can be transmitted to the first and second passage

floor reinforcing members

57, 58 via the plurality of projections 77. Therefore, the strength of the cover 55 with respect to the load input from the passenger side at the time of the forward and backward movement in the vehicle compartment 5 can be ensured.

Further, since the passage bottom plate portion 15 and the left and right passage side plate portions 16 of the floor panel 10 are formed separately from the floor front portion 12, the left and right kick portions 13, and the left and right floor rear portions 14, the floor panel can be manufactured at low cost, unlike a case where the floor panel 10 is integrally formed using a mold having a complicated shape or the like. In the present embodiment, since the floor main body 21 is formed by cutting the kick portion of the floor panel and the vehicle width direction center portion of the floor rear portion of the general flathead vehicle as described above, a mold having a complicated shape or the like is not required, and the floor panel of the general flathead vehicle can be used and manufactured at low cost.

Further, since the passage bottom plate portion 15 and the left and right passage side plate portions 16 of the floor panel 10 are fixed to the floor main body 21 in a unitized state as one passage unit 22, the assembly work of the floor panel 10 can be simplified.

In the present embodiment, the seat cushion 37 of the seat 17b is provided with the protruding region 39, and the seat bracket 40 is provided between the passage floor portion 15 of the floor panel 10 and the seat 17b, but the present invention is not limited to this. For example, the seat cushion 37 of the seat 17b may not be provided with the protruding region 39, and the seat holder 40 may not be provided.

In the present embodiment, the plurality of passage floor reinforcing members 57 to 61 are formed in a hat shape in cross section that opens upward, but the shape of the plurality of passage floor reinforcing members 57 to 61 is not limited thereto, and may be other shapes (for example, a rectangular tube shape or the like) as long as they can reinforce the passage floor portion 15 of the floor panel 10.

In the present embodiment, 3 passage floor reinforcing members (passage reinforcing members) 57 to 59 extending over the entire area of the passage floor portion 15 of the floor panel 10 in the vehicle width direction are provided, but the present invention is not limited thereto, and at least 1 passage reinforcing member may be provided.

In the present embodiment, the lid 55 is formed by the upper and lower 2 plate-

like members

75 and 76, but the present invention is not limited thereto. For example, the sheet-like member may be formed of 1 sheet, or 3 or more sheets.

In the present embodiment, a plurality of (5 in the present embodiment) projections (a plurality of cover reinforcing portions) 77 are formed in a region of the cover 55 exposed downward from the inspection opening 54, but the cover reinforcing portion is not limited to the projections 77 and may be, for example, a rib.

In the present embodiment, the plurality of projections (the plurality of cover reinforcing portions) 77 are provided on the cover 55, but the cover reinforcing portion may not be provided.

In the present embodiment, the inspection opening 54 is provided in the passage bottom portion 15 of the floor panel 10, and the cover 55 is attached to the passage bottom portion 15, but the present invention is not limited thereto, and the inspection opening 54 and the cover 55 may not be provided.

In the present embodiment, the passage bottom plate portion 15 and the left and right passage side plate portions 16 of the floor panel 10 are assembled to the floor main body 21 in a unitized state as the passage unit 22, but the present invention is not limited to this, and the floor panel 10 may be integrally formed by press working or the like without unitizing the passage bottom plate portion 15 and the left and right passage side plate portions 16 of the floor panel 10.

In the present embodiment, the cab 2 is provided with the high roof type roof panel 6 that extends the vehicle compartment 5 upward, but the present invention is not limited to this, and a roof panel of a normal height may be provided in the cab 2.

In the present embodiment, the doorway 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 a passage from the floor front portion 12 to the doorway 9 (or from the doorway 9 to the floor front portion 12). For example, the passageway bottom plate portion 15 of the floor panel 10 may be a passageway from the floor front portion 12 to the region rearward of the left and

right seats

17a and 17b (or from the region rearward of the left and

right seats

17a and 17b to the floor front portion 12) without providing the doorway 9 on the rear surface 2a of the cab 2.

The present disclosure has been described above based on the above embodiments, but the present disclosure is not limited to the contents of the above embodiments, and it goes without saying that appropriate modifications can be made without departing from the scope of the present invention. That is, it is needless to say that other embodiments, examples, operation techniques, and the like completed by those skilled in the art based on the present embodiment are all included in the scope of the present invention.

The present application is based on the japanese patent application filed on 27/9/2019 (japanese application 2019-177141), the contents of which are hereby incorporated by reference.

Industrial applicability

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

Description of the reference numerals

1 vehicle

2 driver's cabin

5 compartment

10 floor panel

12 floor front part

13 left and right upper bent parts

14 rear part of the floor at left and right sides

15 channel bottom plate part

16 left and right passage side plate parts

54 inspection opening (opening)

55 lid (cover component)

57 first channel floor Reinforcement Member (channel Reinforcement Member or other channel Reinforcement Member)

58 second channel floor stiffener (other channel stiffener or channel stiffener)

59 third passage floor reinforcement member (passage reinforcement member)

77 multiple protrusions (multiple cover reinforcement)

Claims

1. A floor structure of a vehicle, characterized in that,

comprising a floor panel and a channel reinforcement member,

the floor panel has: a floor front portion extending rearward from a lower front end portion of the vehicle compartment; left and right kick portions extending upward from a rear portion of the front portion of the floor panel in a state of being separated left and right from each other; left and right floor rear portions which are disposed rearward and upward of the floor front portion and extend rearward from upper portions of the left and right kick-up portions in a state of being separated from each other in the left-right direction; a tunnel bottom plate portion disposed at a height lower than the left and right floor rear portions, and extending rearward from a rear portion of the floor front portion between the left and right kick-up portions and between the left and right floor rear portions; and left and right passage side plate portions rising along left and right end edges of the passage bottom plate portion and closing gaps between the left and right kick portions and the left and right floor rear portions and the passage bottom plate portion, the floor panel defining a lower portion of the vehicle compartment,

the passage reinforcing member extends along a lower surface of the passage bottom plate portion of the floor panel over an entire region of the passage bottom plate portion in the vehicle width direction, and is fixed to the lower surface of the passage bottom plate portion to reinforce the passage bottom plate portion.

2. The floor structure of a vehicle according to claim 1,

the passage reinforcing member forms a closed cross section extending in the vehicle width direction between the passage reinforcing member and the passage bottom plate portion of the floor panel.

3. The floor structure of a vehicle according to claim 1 or 2,

the method comprises the following steps:

another passage reinforcing member that is disposed at a position apart from the passage reinforcing member toward one side in the front-rear direction, extends along the lower surface of the passage bottom plate portion of the floor panel over the entire region of the passage bottom plate portion in the vehicle width direction, and is fixed to the lower surface of the passage bottom plate portion to reinforce the passage bottom plate portion; and

a cover member attached to an upper surface of the passage bottom plate portion of the floor panel,

an opening is formed in a region between the passage reinforcing member and the other passage reinforcing member in the passage bottom plate portion of the floor panel,

the cover member extends at least from above the passage reinforcing member to above the other passage reinforcing member in the front-rear direction, and closes the opening.

4. The floor structure of a vehicle according to claim 3,

a plurality of cover reinforcing portions extending in the front-rear direction are provided in a region of the cover member exposed downward from the opening.

5. The floor structure of a vehicle according to claim 1 or 2,

the passage bottom plate portion, the left and right passage side plate portions, and the passage reinforcing member of the floor panel are formed separately from the floor front portion, the left and right kick-up portions, and the left and right floor rear portions of the floor panel, and are fixed to the floor front portion, the left and right kick-up portions, and the left and right floor rear portions in a unitized state as one component.