CN109415095B - Bottom structure of cab - Google Patents
Bottom structure of cab Download PDFInfo
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- CN109415095B CN109415095B CN201780038016.3A CN201780038016A CN109415095B CN 109415095 B CN109415095 B CN 109415095B CN 201780038016 A CN201780038016 A CN 201780038016A CN 109415095 B CN109415095 B CN 109415095B
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- frame
- floor
- cab
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- vehicle width
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The rear cab attachment rail (11) has left and right bracket fixing regions (36) and extends linearly in the vehicle width direction at the lower portion of the rear end of the cab (2). An upper region (20b) of an inclined floor part (20) of a 1 st panel member (16) of a floor panel (12), a bed supporting floor part (21), and a 3 rd panel member (18) are protruding parts (25), and the protruding parts (25) protrude upward from the upper surface of a front end edge part (30) of the 2 nd panel member (17) and linearly extend in the vehicle width direction across the left and right of the 2 nd panel member (17). A frame rear part (35) of the floor underframe (15) linearly extends between a front end edge part (30) of the 2 nd panel member (17) and a bracket fixing area (36) of the rear cab mounting rail (11). The rear cab mounting rail (11), the protruding portion (25) of the floor panel (12), and the left and right frame rear portions (35) are fixed to each other in a cross-like manner below the resting space (14).
Description
Technical Field
The present disclosure relates to a floor structure of a cab of a vehicle.
Background
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 10-297537
Disclosure of Invention
Problems to be solved by the invention
Further, in a cab of a truck, for example, a cab of a long-distance truck, a large space may be provided behind a seat (a seat), and a bed or the like may be mounted in the space. In this way, in order to provide a large space behind the seat, there is a risk that: since the floor panel behind the seat is long in the front-rear direction, it is accordingly difficult to ensure the rigidity of the floor panel.
Accordingly, an object of the present disclosure is to provide a floor surface portion structure of a cab capable of ensuring rigidity of a floor panel even if a large space is provided behind a seat.
Means for solving the problems
In order to solve the above problems, the present disclosure is a floor structure of a cab having a predetermined space behind a seat in a vehicle compartment, including a mounting rail, a floor panel, and a left and right 1-pair bottom frame. The mounting rail has a pair of left and right supported portions 1 to 1 which are supported from below by a vehicle body frame, and linearly extends in the vehicle width direction at a lower portion of a rear end of the cab. The floor panel has a floor rear portion that extends continuously forward from the mounting rail below the predetermined space, and a protruding portion that protrudes upward from a front end edge portion of the floor rear portion, linearly extends in the vehicle width direction across the left and right sides of the floor rear portion, and forms a closed cross section with the front end edge portion of the floor rear portion, and partitions a lower side of the vehicle compartment. The left and right bottom frames each have a frame rear portion linearly extending between the left and right supported portions of the mounting rail and the front end edge portion of the floor rear portion and supporting the floor rear portion from below, extend in the front-rear direction along the lower surface of the floor panel on both sides in the vehicle width direction of the cab, and are fixed to the floor panel.
In the above configuration, the mounting rail extends linearly in the vehicle width direction at a lower portion of the rear end of the cab, and the protruding portion forming a closed cross section with the rear floor portion extends linearly in the vehicle width direction across the left and right sides of the rear floor portion. Further, the frame rear portions of the left and right bottom frames linearly extend between the left and right supported portions of the mounting rail and the front end edge portions of the floor rear portion. In this way, since each of the mounting rail functioning as the reinforcement member of the floor rear portion, the protruding portion of the floor panel, and the frame rear portions of the left and right bottom frames are fixed to each other via the floor rear portion in a state of extending straight below the predetermined space behind the seat and crossing in a "well" shape, the rigidity of the floor rear portion can be ensured, and even if the predetermined space behind the seat is large, the rigidity of the floor panel can be ensured.
The left and right bottom frames may have frame front portions extending continuously forward from front ends of the frame rear portions, respectively, and the bending rigidity of the frame rear portions may be greater than the bending rigidity of the frame front portions.
In the above configuration, since the bending rigidity of the frame rear portion is greater than the bending rigidity of the frame front portion, the rigidity of the floor rear portion can be increased by the frame rear portion, and the rigidity of the floor panel can be ensured even if the predetermined space behind the seat is large.
Further, the length in the height direction of the frame rear portion may be longer than the length in the height direction of the frame front portion. The length of the lateral plate portion of the rear frame portion in the vehicle width direction may be longer than the length of the lateral plate portion of the front frame portion in the vehicle width direction. The cross-sectional area of the rear portion of the frame may also be greater than the cross-sectional area of the front portion of the frame.
The pair of left and right base frames may have a pair of left and right frame rear portions extending in the front-rear direction, and the mounting rail extending in the vehicle width direction and the protruding portion extending in the vehicle width direction may be fixed to each other so as to intersect the left and right frame rear portions below the predetermined space.
With the above configuration, the rigidity of the floor panel can be improved.
Effects of the invention
According to the present disclosure, even if a large space is provided behind the seat, the rigidity of the floor panel can be ensured.
Drawings
Fig. 1 is an external perspective view of a front portion of a vehicle to which a floor portion structure of a cab of the present disclosure is applied.
Fig. 2 is a schematic cross-sectional view of the cab of fig. 1.
Fig. 3 is a schematic sectional view of the rear part of the cab.
Fig. 4 is a schematic bottom view of the cab of the vehicle of fig. 1.
Detailed Description
Hereinafter, one embodiment of the present disclosure will be described based on the drawings. IN each of the drawings, FR denotes a front of the vehicle, UP denotes an upper side, and IN denotes a vehicle width direction inner side. In the following description, the left-right direction means a left-right direction in a state of being directed toward the front of the vehicle.
As shown in fig. 1 and 2, the bottom surface structure of the cab of the present disclosure is applied to, for example, a flathead truck (vehicle) 1 in which a cab 2 is disposed substantially above an engine (not shown). The cab 2 of the truck 1 is formed in a box shape by a cab front surface portion 3, left and right cab side surface portions 4, a cab rear surface portion 5, a cab upper surface portion 6, and a cab bottom surface portion (bottom surface portion) 10, and defines a vehicle compartment 7 therein. The front lower portion of the cab 2 is rotatably supported by the front end portion of the body frame 37 of the truck 1 via a front cab mount bracket 39. The rear lower end of the cab 2 is supported from below by the vehicle body frame 37 via a rear cab mounting bracket 38 fixed to the vehicle body frame 37. Fig. 2 illustrates the cab 2 with various devices (such as a steering wheel) in front of the door and the vehicle compartment 7, a seat 13 described later, and the like omitted.
As shown in fig. 3, in the vehicle compartment 7 of the cab 2, seating seats 13 on which passengers are seated are disposed on both the left and right sides (the driver seat side and the passenger seat side). A rest space (predetermined space) 14 in which a passenger can rest is provided in a region behind the seat 13 of the cab 2, and a bed 33 formed in a substantially rectangular plate shape is provided in the rest space 14.
As shown in fig. 2 to 4, the cab bottom surface portion 10 includes: a rear cab mount rail (mount rail) 11 extending in the vehicle width direction at a rear end edge portion of the cab floor portion 10; a floor panel 12 extending forward from the rear cab mounting rail 11; and left and right 1 pairs of floor frames (bottom frames) 15 fixed to the lower surface 12a of the floor panel 12. The cab floor portion 10 is defined below the vehicle compartment 7.
The rear cab attachment rail 11 is formed by bending a metal panel member so as to protrude upward, and linearly extends in the vehicle width direction at the rear end lower portion of the cab 2, thereby ensuring the rigidity of the rear end edge portion of the cab floor portion 10. The rear cab attachment rail 11 is composed of a front plate portion 11a, an upper plate portion 11b bent from an upper end edge of the front plate portion 11a and extending rearward, and a rear plate portion 11c bent from a rear end edge of the upper plate portion 11b and extending downward, and is formed in an open cross-sectional shape open downward and extending in the vehicle width direction, and defines a space 8 inside thereof. The lower edge of the cab rear surface 5 is fixed to the rear plate 11 c. In space 8 below rear cab mounting rail 11, left and right pairs of rear cab mounting brackets 9 are disposed, and left and right rear cab mounting brackets 9 are fixed to front plate portion 11a and upper plate portion 11b of rear cab mounting rail 11. In the rear cab mounting rail 11, left and right 1-pair bracket fixing regions (supported portions) 36 to which left and right rear cab mounting brackets 9 are fixed are supported from below by a vehicle body frame 37 via the left and right rear cab mounting brackets 9 and a rear cab mounting bracket 38. The left and right bracket fixing regions 36 are regions within a predetermined range in the vehicle width direction of the rear cab attachment rail 11, and are regions in which the supporting force from the vehicle body frame 37 side is stronger than other regions. The rear end edge 33b of the bed 33 is placed on the upper surface of the upper plate portion 11b, and the upper plate portion 11b supports the rear end edge 33b of the bed 33 from below. In fig. 3, the upper plate portion 11b of the rear cab attachment rail 11 and the rear end edge portion 33b of the bed 33 are slightly separated for easy understanding, but actually, the rear end edge portion 33b of the bed 33 is placed on the upper plate portion 11b of the rear cab attachment rail 11, and the bed 33 and the rear cab attachment rail 11 are in contact with each other.
The floor panel 12 is configured by joining 3 panel members 16, 17, and 18, i.e., a 1 st panel member 16 on the front side of the cab 2, a 2 nd panel member (rear floor portion) 17 on the rear side of the cab, and a 3 rd panel member 18. The floor panel 12 forms a floor surface of the vehicle compartment 7.
The 1 st panel member 16 of the floor panel 12 integrally has a cab front floor portion 19, an inclined floor portion 20, and a bed support floor portion 21. The 1 st panel member 16 extends from a lower portion of the front end of the cab 2 to a position rearward of the seat 13. The front end edge of the 1 st panel member 16 is the front end edge of the floor panel 12.
The cab front floor portion 19 of the 1 st panel member 16 includes: a center tunnel (center tunnel)22 extending in the front-rear direction in a state of projecting upward at a vehicle width direction center portion; and front floor portions 23 on both left and right sides of the center tunnel 22. Cab front floor 19 extends rearward from a lower front end of cab 2. The cross-sectional shape of the cab front floor 19 orthogonal to the front-rear direction is formed in a substantially hat (hat) shape by the center tunnel 22 and the left and right front floor 23. In the space 40 below the center tunnel 22, a radiator (not shown), an engine (not shown), and accessories (not shown) related thereto are disposed. The left and right front floor portions 23 have support regions 23a at the rear portion, to which the seat 13 is fixed, and which support the seat 13 from below, and are disposed on both the left and right sides of the center tunnel 22 and extend rearward from the lower portion of the front end of the cab 2. The seat 13 has left and right slide rails (not shown) extending in the front-rear direction at the lower end portion of the seat 13 and allowing the seat 13 to slide in the front-rear direction, and is fixed to the support regions 23a of the left and right front floor portions 23 of the cab front floor portion 19 via the left and right slide rails. The seat 13 may be directly fixed to the cab front floor 19 without the slide rail.
The inclined floor portion 20 of the 1 st panel member 16 includes: left and right lower regions 20a (in fig. 2 and 3, only the lower region 20a on the right side in the vehicle width direction is shown) that are bent from the rear end edges of the left and right front floor portions 23 and extend upward and rearward; and an upper region 20b extending rearward and upward continuously from an upper end edge of the lower region 20a and a rear end edge of the center tunnel 22. The inclined floor portion 20 is disposed in the vicinity of the rear of the seat 13. Upper region 20b of inclined floor portion 20 extends in the vehicle width direction across the left and right of cab 2. The upper end edge portion of the upper region 20b of the inclined floor portion 20 is disposed at substantially the same height position as the upper end edge portion of the front plate portion 11a of the rear cab attachment rail 11.
The bed supporting floor portion 21 of the 1 st panel member 16 is bent from the upper end edge of the upper region 20b of the inclined floor portion 20, extends rearward substantially horizontally, and is disposed at substantially the same height as the upper plate portion 11b of the rear cab attachment rail 11. The front end edge 33a of the bed 33 is placed on the upper surface of the bed support floor 21, and the bed support floor 21 supports the front end edge 33a of the bed 33 from below. In fig. 3, the front end edge 33a of the bed 33 is slightly separated from the bed support floor 21 for easy understanding, but actually, the front end edge 33a of the bed 33 is placed on the bed support floor 21, and the bed 33 is in contact with the bed support floor 21.
The 2 nd panel member 17 of the floor panel 12 is disposed rearward of the seat 13, is formed in a substantially rectangular shape that is long in the vehicle width direction, and extends across the left and right of the cab 2. The front end edge of the 2 nd panel member 17 is fixed to the rear surface 24 of the inclined floor portion 20 of the 1 st panel member 16, and the rear end edge of the 2 nd panel member 17 is continuous with the lower end edge of the front plate portion 11a of the rear cab attachment rail 11. The 2 nd panel member 17 is disposed above the left and right front floor portions 23 of the 1 st panel member 16 and defines a lower part of the rest space 14 behind the seat 13. That is, the 2 nd panel member 17 extends continuously from the rear cab attachment rail 11 to the vicinity of the rear of the front seat 13 below the resting space 14.
The 3 rd panel member 18 of the floor panel 12 is formed in a substantially rectangular shape that is long in the vehicle width direction, and extends in the vertical direction to connect between the rear end edge portion of the bed supporting floor portion 21 of the 1 st panel member 16 and the upper surface of the 2 nd panel member 17. The upper end edge portion of the 3 rd panel member 18 is fixed to the rear end edge portion of the bed supporting floor portion 21 of the 1 st panel member 16. The lower end edge of the 3 rd panel member 18 is fixed to a position separated rearward from the rear surface 24 of the inclined floor portion 20 of the 1 st panel member 16 on the upper surface of the 2 nd panel member 17.
The upper region 20b of the inclined floor portion 20 of the 1 st panel member 16, the bed supporting floor portion 21 of the 1 st panel member 16, and the 3 rd panel member 18 are projecting portions 25, and the projecting portions 25 project upward from the upper surface of the front end edge portion 30 of the 2 nd panel member 17, linearly extend in the vehicle width direction across the left and right sides of the 2 nd panel member 17, and form a closed cross section with the front end edge portion 30 of the 2 nd panel member 17. The protrusion 25 is disposed in the vicinity of the rear of the seat 13 apart forward from the rear cab attachment rail 11 in the floor panel 12, and supports the front end edge 33a of the bed 33 from below.
The 3 rd panel member 18 and the 2 nd panel member 17 define a concave space 26 which is open upward in a region rearward of the 3 rd panel member 18 and the front plate portion 11a of the rear cab attachment rail 11. In a state where the bed 33 is placed on the bed supporting floor portion 21 of the 1 st panel member 16 and the upper plate portion 11b of the rear cab attachment rail 11, the upper side of the concave space 26 is closed by the bed 33. In addition, the upper part of the concave space 26 is opened in a state where at least one of the front end edge part 33a and the rear end edge part 33b of the bed 33 is moved upward.
The left and right floor frames 15 are formed into a substantially hat (hat) shape in cross section that opens upward, are disposed on both left and right sides below the floor panel 12, extend in the front-rear direction, and support the floor panel 12 from below. The left and right floor frames 15 include: a frame front portion 34 extending rearward of the seat 13 from a front end portion of the floor panel 12; and a frame rear portion 35 that extends substantially horizontally continuously from a rear end of the frame front portion 34 to a rear end portion of the floor panel 12. The left and right floor frames 15 are fixed to the floor panel 12 by welding or the like in a state where the abutting portions abut on the lower surface of the floor panel 12.
The frame front portions 34 of the left and right floor frames 15 extend rearward from the front end of the floor panel 12 to the rear end (upper end) of the lower region 20a along the lower surfaces of the left and right front floor portions 23 of the 1 st panel member 16 and the left and right lower regions 20a of the inclined floor portion 20, and support the 1 st panel member 16 from below. That is, the rear end portion of the frame front portion 34 is inclined along the lower surfaces of the left and right lower regions 20a of the inclined floor portion 20 of the 1 st panel member 16. The front end of the frame front 34 is rotatably supported by the vehicle body frame 37 via a front cab mount bracket 39. The rear end 29 of the frame front 34 is disposed on the vehicle width direction outer side of the rear cab attachment bracket 9 on the same side in the vehicle width direction. That is, the distance between the rear ends of the left and right frame front portions 34 is longer than the distance between the left and right rear cab attachment brackets 9. The frame front portion 34 has left and right 1-pair vertical plate portions 27 and horizontal plate portions 28, respectively, and is fixed to the lower surfaces of the vehicle width direction inner end edge portions of the left and right front floor portions 23 of the 1 st panel member 16 and the lower surfaces of the vehicle width direction inner end edge portions of the left and right lower regions 20a of the inclined floor portion 20. The frame front 34 forms a closed cross-section with the 1 st panel member 16. The left and right vertical plate portions 27 are disposed apart from each other in the vehicle width direction, are fixed to the lower surface of the 1 st panel member 16, and extend downward. The lateral plate portion 28 connects both lower end edges of the left and right vertical plate portions 27. The length L1 of the frame front portion 34 in the direction perpendicular to the floor panel 12 (hereinafter referred to as the height direction) is set to a predetermined length across the front and rear of the frame front portion 34. The vehicle width direction length L2 of the lateral plate portion 28 is set to be substantially equal to the distance between the upper end edges of the left and right vertical plate portions 27 fixed to the 1 st panel member 16, across the front and rear of the frame front portion 34. The cross-sectional shape between the frame front 34 and the 1 st panel member 16 is substantially rectangular (oblong).
The frame rear portions 35 of the left and right floor frames 15 have left and right 1 pairs of vertical plate portions 31 and lateral plate portions 32, respectively. The left and right frame rear portions 35 are formed of a plate body having substantially the same wall thickness as the frame front portion 34, are fixed to the lower surface of the 2 nd panel member 17, and support the 2 nd panel member 17 from below. The left and right frame rear portions 35 extend from the rear end 29 of the frame front portion 34 continuously below the left and right bracket fixing areas 36 of the rear cab attachment rail 11 in directions approaching each other such that the interval therebetween becomes gradually shorter as it goes rearward. The front end 35a of the frame rear portion 35 is fixed to the lower surface of the front end edge 30 of the 2 nd panel member 17, and is fixed to the protruding portion 25 via the front end edge 30 of the 2 nd panel member 17. The rear end portion 35b of the frame rear portion 35 is fixed to the rear cab mounting bracket 9, and is thereby fixed to the left and right bracket fixing regions 36 of the rear cab mounting rail 11 via the rear cab mounting bracket 9. The frame rear portion 35 extends linearly between the front end edge portion 30 of the 2 nd panel member 17 and the left and right bracket fixing regions 36 of the rear cab attachment rail 11. The frame rear 35 forms a closed cross section between the 2 nd panel member 17 that is larger than the closed cross section formed by the frame front 34 between the 1 st panel member 16. That is, the outer shape of the rear frame portion 35 is enlarged in the vehicle width direction and the vertical direction from the rear end 29 of the front frame portion 34 and extends rearward. The left and right vertical plate portions 31 are fixed to the lower surface of the 2 nd panel member 17 in a state of being spaced apart from each other in the vehicle width direction, and extend continuously rearward from the rear ends of the left and right vertical plate portions 29 of the frame front portion 34. The distance L5 between the upper end edges of the left and right vertical plates 31 fixed to the 2 nd panel member 17 is longer than the distance between the upper end edges of the left and right vertical plates 29 of the frame front 34 fixed to the 1 st panel member 16. The left and right vertical plate portions 31 extend downward from the lower surface of the 2 nd panel member 17 in directions approaching each other. The lateral plate portion 32 extends continuously rearward from the rear end of the lateral plate portion 28 of the frame front portion 34, and connects the lower end edges of the left and right vertical plate portions 31. The sectional shape between the frame rear 35 and the 2 nd panel member 17 is a trapezoidal shape in which the length of the upper base (L5) is longer than the length of the lower base (L4). The frame rear portion 35 is formed in a shape having a larger second moment in cross section than the frame front portion 34, and the bending rigidity of the frame rear portion 35 (bending rigidity in the longitudinal direction when a vertical load is applied thereto: hereinafter, simply referred to as bending rigidity) is set to be larger than the bending rigidity of the frame front portion 34. In the present embodiment, the height direction length L3 of the frame rear portion 35 is set to be longer than the height direction length L1 of the frame front portion 34 throughout the front and rear of the frame rear portion 35, the vehicle width direction length L4 of the lateral plate portion 32 of the frame rear portion 35 is set to be longer than the vehicle width direction length L2 of the lateral plate portion 28 of the frame front portion 34 throughout the front and rear of the frame rear portion 35, and the cross-sectional area of the frame rear portion 35 is set to be larger than the cross-sectional area of the frame front portion 34. The size of the outer shape of the frame rear portion 35 with respect to the frame front portion 34 (the length in the height direction, the length in the vehicle width direction, and the like) is not limited to the above, and for example, the length L4 in the vehicle width direction of the lateral plate portion 32 of the frame rear portion 35 may be set to be substantially the same as the length L2 in the vehicle width direction of the lateral plate portion 28 of the frame front portion 34, and only the length L3 in the height direction of the frame rear portion 35 may be set to be longer than the length L1 in the height direction of the frame front portion 34.
As shown in fig. 2 and 4, the rear cab attachment rail 11 and the protruding portion 25 of the floor panel 12 are separated from each other in the front-rear direction and extend linearly in the vehicle width direction substantially in parallel. The frame rear portions 35 of the left and right floor frames 15 linearly extend between the front end edge portions 30 of the 2 nd panel member 17 and the left and right bracket fixing regions 36 of the rear cab attachment rail 11. The rear cab mounting rail 11, the protruding portion 25 of the floor panel 12, and the frame rear portions 35 of the left and right floor frames 15 are fixed to each other so as to cross each other in a "cross-like manner below the resting space 14 (see fig. 2), so that they form a trapezoidal shape when viewed from below. In the present disclosure, the term "criss-crossing" is used to include a case where crossing is performed in a trapezoidal manner as described above, without being limited to a case where crossing is performed in a rhombus manner or a case where crossing is performed in a crater manner at right angles to each other.
In the cab bottom portion 10 of the cab 2 configured as described above, since the rear cab attachment rail 11 and the protruding portion 25 of the floor panel 12 extend in the vehicle width direction, the rigidity of the 2 nd panel member 17 against a load from the vehicle width direction can be ensured by the rear cab attachment rail 11 and the protruding portion 25 of the floor panel 12. Further, since the projecting portions 25 of the rear cab attachment rail 11 and the floor panel 12 extend linearly, unlike the case where the projecting portions 25 of the rear cab attachment rail 11 and the floor panel 12 have curved portions, concentration of stress at a predetermined position (for example, the curved portion) when a load is input from the vehicle width direction can be suppressed.
Further, since the frame rear portions 35 of the left and right floor frames 15 extend in the front-rear direction between the front end edge portions 30 of the 2 nd panel member 17 and the left and right bracket fixing regions 36 of the rear cab attachment rail 11, the frame rear portions 35 of the left and right floor frames 15 can ensure the rigidity of the 2 nd panel member 17 against a load from the front-rear direction. Further, since the frame rear portions 35 of the left and right floor bottom frames 15 extend linearly, unlike the case where the frame rear portions 35 of the left and right floor bottom frames 15 have the bent portions, concentration of stress at a predetermined position (for example, the bent portion) when a load is input from the front-rear direction can be suppressed.
Further, since each of the rear cab mounting rail 11, the protruding portion 25 of the floor panel 12, and the frame rear portions 35 of the left and right floor frames 15 is fixed to each other so as to cross in a "well" shape below the resting space 14 behind the seat 13, the rear cab mounting rail 11, the protruding portion 25 of the floor panel 12, and the frame rear portions 35 of the left and right floor frames 15 are mutually reinforced, and the respective rigidities are improved. Therefore, the rigidity of the 2 nd panel member 17 can be sufficiently ensured, and the rigidity of the floor panel 12 can be sufficiently ensured even if the resting space 14 behind the seat 13 is large in the front-rear direction.
Further, the frame rear 35 has greater flexural rigidity than the frame front 34. Since the frame rear portion 35 having a bending rigidity higher than that of the frame front portion 34 is provided in this manner, for example, the rigidity of the 2 nd panel member 17 can be increased as compared with a case where the frame rear portion 35 having the same bending rigidity as that of the frame front portion 34 is provided, and the rigidity of the floor panel 12 can be sufficiently ensured even if the resting space 14 behind the seat 13 is large in the front-rear direction.
In the present embodiment, the floor panel 12 is configured by joining 3 panel members 16, 17, and 18, i.e., the 1 st panel member 16, the 2 nd panel member 17, and the 3 rd panel member 18, but the number of panel members configuring the floor panel 12 is not limited to this. The joining position of the 3 panel members 16, 17, and 18 is not limited to the above. That is, in the present embodiment, the 2 nd panel member 17 is used as the rear floor portion, but the present invention is not limited to this, and the rear floor portion may be a portion of the floor panel 12 that extends continuously forward from the rear cab attachment rail 11 below the resting space 14. In the present embodiment, the projecting portion 25 projecting upward from the front end edge portion 30 of the 2 nd panel member (rear floor portion) 17 is formed by the upper region 20b of the inclined floor portion 20 of the 1 st panel member 16, the bed supporting floor portion 21 of the 1 st panel member 16, and the 3 rd panel member 18, but the present invention is not limited to this, and other configurations are possible as long as the projecting portion projects upward from the front end edge portion of the rear floor portion.
In the present embodiment, the rest space 14 is provided behind the seat 13 in the cab 2, but the present invention is not limited to this, and for example, a predetermined space behind the seat 13 may be a storage space for luggage or the like.
The shape of the frame rear portion 35 of the floor bottom frame 15 is not limited to the above. For example, the cross-sectional shape between the frame rear portion 35 and the 2 nd panel member 17 is not limited to a trapezoidal shape in which the length of the upper base (L5) is longer than the length of the lower base (L4), and may be a substantially rectangular shape, as in the cross-sectional shape between the frame front portion 34 and the 1 st panel member 16.
In the present embodiment, the bending rigidity of the frame rear portion 35 is set to be greater than the bending rigidity of the frame front portion 34 by setting the second moment of section of the frame rear portion 35 to be greater than the frame front portion 34, but the present invention is not limited to this. For example, the frame rear portion 35 may be formed of a material having a higher young's modulus than the frame front portion 34, so that the frame rear portion 35 has a higher flexural rigidity than the frame front portion 34.
Although the present disclosure has been described above based on the above embodiments, 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 disclosure. That is, it is needless to say that other embodiments, examples, application techniques, and the like, which are completed by those skilled in the art based on the present embodiment, are all included in the scope of the present disclosure.
For example, in the above embodiment, the bottom surface structure of the cab according to the present disclosure is applied to the flathead truck 1, but the present invention is not limited to this, and may be applied to a cab of a tractor or the like that pulls a trailer, for example.
The present application is based on Japanese laid-open application No. 2016-135359 (Japanese laid-open application No. 2016-135359), the contents of which are incorporated herein by reference.
Industrial applicability
The present invention has an effect that it is possible to provide a floor structure of a cab that can ensure the rigidity of a floor panel even if a large space is provided behind a seat, and is useful for a floor structure of a cab of a vehicle, and the like.
Description of the reference numerals
1: truck (vehicle)
2: driver's cabin
7: carriage body
10: cab bottom (bottom)
11: rear cab mounting rail (mounting rail)
12: floor panel
13: seating chair
14: rest space (predetermined space)
15: left and right 1 pair floor bottom frame (bottom frame)
17: panel member (rear floor)
25: projection part
30: front end edge of No. 2 panel component (front end edge of rear floor)
34: front part of frame
35: frame rear part
36: left and right 1 pair bracket fixing area (supported part)
37: vehicle body frame
Claims (7)
1. A floor structure of a cab having a predetermined space behind a seat in a vehicle compartment, comprising:
a mounting rail having a left and right pair of supported portions supported from below by a vehicle body frame and extending linearly in a vehicle width direction at a lower portion of a rear end of the cab,
a floor panel having a floor rear portion extending continuously forward from the mounting rail below the predetermined space and a protruding portion protruding upward from a front end edge portion of the floor rear portion and linearly extending in a vehicle width direction across left and right sides of the floor rear portion and forming a closed cross section with the front end edge portion of the floor rear portion, and defining a lower portion of the vehicle compartment, and a closed cross section with the front end edge portion of the floor rear portion
Left and right 1 pairs of bottom frames each having a frame rear portion linearly extending between the left and right 1 pairs of supported portions of the mounting rail and the front end edge portion of the floor rear portion and supporting the floor rear portion from below, extending in the front-rear direction along the lower surface of the floor panel on both sides in the vehicle width direction of the cab, and fixed to the floor panel,
the left and right 1 pairs of bottom frames each have a frame front portion continuously extending forward from a front end of the frame rear portion;
the bending rigidity of the rear portion of the frame is greater than that of the front portion of the frame.
2. The floor structure of a cab according to claim 1,
the length of the frame rear part in the height direction is longer than the length of the frame front part in the height direction.
3. The floor structure of a cab according to claim 1,
the length of the lateral plate portion of the rear portion of the frame in the vehicle width direction is longer than the length of the lateral plate portion of the front portion of the frame in the vehicle width direction.
4. The floor structure of a cab according to claim 2,
the length of the lateral plate portion of the rear portion of the frame in the vehicle width direction is longer than the length of the lateral plate portion of the front portion of the frame in the vehicle width direction.
5. The floor structure of a cab according to any one of claims 1 to 4,
the cross-sectional area of the rear portion of the frame is greater than the cross-sectional area of the front portion of the frame.
6. The floor structure of a cab according to any one of claims 1 to 4,
the left and right 1 pairs of bottom frames have left and right 1 pairs of frame rear portions, the left and right 1 pairs of frame rear portions extend in the front-rear direction;
the mounting rail extending in the vehicle width direction and the projecting portion extending in the vehicle width direction are fixed to each other below the predetermined space so as to intersect with the left and right 1-pair frame rear portions.
7. The floor structure of a cab according to claim 5,
the left and right 1 pairs of bottom frames have left and right 1 pairs of frame rear portions, the left and right 1 pairs of frame rear portions extend in the front-rear direction;
the mounting rail extending in the vehicle width direction and the projecting portion extending in the vehicle width direction are fixed to each other below the predetermined space so as to intersect with the left and right 1-pair frame rear portions.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-135359 | 2016-07-07 | ||
| JP2016135359A JP6694593B2 (en) | 2016-07-07 | 2016-07-07 | Cab bottom structure |
| PCT/JP2017/023538 WO2018008467A1 (en) | 2016-07-07 | 2017-06-27 | Structure of bottom part of cab |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109415095A CN109415095A (en) | 2019-03-01 |
| CN109415095B true CN109415095B (en) | 2021-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780038016.3A Active CN109415095B (en) | 2016-07-07 | 2017-06-27 | Bottom structure of cab |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6694593B2 (en) |
| CN (1) | CN109415095B (en) |
| WO (1) | WO2018008467A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108725601A (en) * | 2018-05-31 | 2018-11-02 | 安徽江淮汽车集团股份有限公司 | Cab floor assembly structure |
| JP7182077B2 (en) * | 2019-03-29 | 2022-12-02 | いすゞ自動車株式会社 | Vehicle cab rear structure |
| JP7212865B2 (en) * | 2019-09-27 | 2023-01-26 | いすゞ自動車株式会社 | vehicle cab structure |
| JP7219421B2 (en) * | 2020-02-05 | 2023-02-08 | いすゞ自動車株式会社 | Cab suspension support structure |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2018002092A (en) | 2018-01-11 |
| JP6694593B2 (en) | 2020-05-20 |
| WO2018008467A1 (en) | 2018-01-11 |
| CN109415095A (en) | 2019-03-01 |
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