JP2010105574A - Vehicle side part structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle side part structure capable of efficiently absorbing the collision energy exerted at collision of the vehicle. <P>SOLUTION: When a door 19 is in a closed state, an outer end surface in a vehicle width direction of an upper plate 34 of a step box 6 comes closer to a first inner surface 23 of a lower part of the door 19 and is opposed to it, and the outer upper surface in the vehicle width direction of the upper plate 34 comes closes to a second lower surface 24 and is opposed to it. Further, the outer end surface in the vehicle width direction of a side plate 48 of a movable step part 35 comes closes to the first inner surface 23 of the lower part of the door 19 and is opposed to it. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle side part structure.

  Japanese Utility Model Laid-Open No. 63-57141 discloses a vehicle step including a first step and a second step provided above the first step. The vehicle side, the front side and the rear side in the vehicle traveling direction of the second step are covered with plates, and constitute a storage box with side openings together with the floor panel of the vehicle body. The lower end of the door extends slightly below the edge of the second step so as to cover the opening of the storage box, and the door is a weather strip that contacts the opening of the storage box and seals the inside from the outside Is provided.

Japanese Utility Model Publication No. 63-57141

  By the way, at the time of a vehicle collision, it is desirable to actively deform a part of the vehicle to absorb the collision energy.

  However, when the second step is in contact with the door via the weather strip as in the vehicle step described above, for example, when a collision load from the lower front of the vehicle is input to the second step, The entire second step may move relatively upward with respect to the door. In such a case, the second step is not effectively deformed, and there is a possibility that the collision energy at the time of the vehicle collision cannot be sufficiently absorbed.

  Accordingly, an object of the present invention is to provide a vehicle side part structure that can efficiently absorb collision energy in the event of a vehicle collision.

  In order to achieve the above object, the vehicle side part structure according to the first aspect of the present invention includes a cab, a door, and a step having a substantially plate-like outer shape.

  The door opens and closes an opening on the outer side of the cab in the vehicle width direction. The step is supported by the side of the vehicle body and extends in the front-rear direction, and serves as a scaffold for the passenger to get on and off the cab from the opening. The lower portion of the door has a flange side surface facing the outer end surface in the vehicle width direction of the step and facing the flange lower surface and facing the upper surface of the step when the door is in a closed state covering the opening.

  In the above configuration, when the door is in the closed state, the flange side surface and the flange lower surface of the lower portion of the door face each other close to the outer end surface and the upper surface in the vehicle width direction of the step. When the door moves to the step side at the time of a vehicle collision, the flange side surface and the flange lower surface of the lower part of the door come into contact with the outer end surface and the upper surface of the step in the vehicle width direction, respectively, and movement outward and upward in the vehicle width direction is restricted. Since the step is pressed in the state, the step is surely crushed and deformed. Therefore, at the time of a vehicle collision, the step which becomes a passenger | crew's scaffold can be actively deformed in a desired deformation mode, and collision energy can be absorbed efficiently.

  Moreover, the vehicle side part structure which concerns on the 2nd aspect of this invention is a vehicle side part structure which concerns on a 1st aspect, Comprising: A deployment means is provided. The unfolding means supports the step on the side of the vehicle body so as to be movable between a storage position standing along the front-rear direction and a unfolding position extending along the vehicle width direction and functioning as a scaffold. When the door is in the closed state, the flange side faces the outer end surface in the vehicle width direction of the step set at the storage position, and the flange lower surface faces the upper surface of the step set at the storage position. .

  In the above configuration, when the occupant gets on and off the cab, the step is set to the deployed position and functions as a scaffold. When the door is closed, the step is set to the stowed position and stands up along the front-rear direction. The outer end surface and the upper surface of the step in the vehicle width direction face the flange side surface and the lower flange surface of the closed door, respectively. . When the door moves to the step side at the time of a vehicle collision, the flange side surface and the flange lower surface of the lower part of the door come into contact with the vehicle width direction outer end surface and the upper surface of the step at the storage position, respectively, and the step stands up along the front-rear direction. Since it is pressed in the state, the step can be crushed and deformed in the vertical direction as compared with the case where the step is arranged extending in the vehicle width direction. Therefore, it is possible to increase the amount of collision energy absorbed with respect to the collision load in the vertical direction among the collision loads input to the vehicle at the time of the vehicle collision.

  The vehicle side part structure according to the third aspect of the present invention includes a cab, a door, a first step having a substantially plate-like outer shape, a second step having a substantially plate-like outer shape, and a developing means. .

  The door opens and closes an opening on the outer side of the cab in the vehicle width direction. The first step is supported by the side of the vehicle body and extends in the front-rear direction, and serves as a scaffold for passengers who get on and off the cab from the opening. The second step is arranged below the first step. The unfolding means supports the second step on the side of the vehicle body so as to be movable between a storage position standing along the front-rear direction and a unfolding position extending along the vehicle width direction and functioning as a scaffold.

  The lower part of the door is close to at least one of the vehicle width direction outer end surface of the first step or the vehicle width direction outer end surface of the second step set at the storage position when the door is in a closed state covering the opening. The flange side surface which opposes and the flange lower surface which opposes and adjoins at least one of the upper surface of the 1st step or the upper surface of the 2nd step set to the accommodation position.

  In the above configuration, the second step is arranged below the first step. When the occupant gets on and off the cab, the second step is set to the deployed position and functions as a scaffold, and when the door is closed, the second step is set to the storage position and stands up along the front-rear direction. At the time of a vehicle collision, if the door moves to the first step and the second step side of the storage position, at least the vehicle width direction outer end surface of the first step or the vehicle width direction outer end surface of the second step of the storage position One is in contact with the flange side surface, and at least one of the upper surface of the first step or the upper surface of the second step in the storage position is in contact with the lower surface of the flange.

  As a result, the first step and the second step are pressed in a state where movement of the first step supported by the vehicle body side and the second step of the storage position to the outside in the vehicle width direction and upward is restricted. Therefore, the first step and the second step are surely crushed and deformed. Therefore, at the time of a vehicle collision, the first step and the second step, which serve as occupant scaffolds, can be actively deformed in a desired deformation mode to efficiently absorb the collision energy.

  Moreover, since the second step is pressed while standing in the front-rear direction, the second step can be crushed and deformed in the vertical direction. Therefore, it is possible to effectively absorb the collision energy for the collision load in the vertical direction among the collision loads input to the vehicle at the time of the vehicle collision.

  Further, when the door is in the open state, the occupant can easily get on and off the cab using the first step and the second step in the deployed position as a foothold.

  According to the present invention, collision energy can be efficiently absorbed during a vehicle collision.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing the step box in the raised position, FIG. 2 is a side view showing the step box in the lowered position, and FIG. 3 is a perspective view showing the step box. 4 is a cross-sectional view taken along line AA of FIG. 3, FIG. 5 is a perspective view showing a step box mounting structure, and FIG. 6 is a side view showing the step box mounting structure. FIG. 7 is a block diagram of the step box lifting device, FIG. 8 is a flowchart showing the step box lowering process, and FIG. 9 is a flowchart showing the step box lifting process. 10 is a view showing a collapsed state of the step box at the time of a frontal collision, FIG. 11 is a top view showing another mounting structure of the step box, and FIGS. 12 to 14 are sectional views showing other modes of the door. In the following description, the front-rear direction indicates the front-rear direction of the traveling direction of the vehicle, and the inner and outer directions indicate the inner and outer sides in the vehicle width direction. Further, in FIG. 6, illustration of the front rack gear 8, the rear rack gear 9, the front pinion gear 38, the rear pinion gear, the frame side fixing plate 61 and the FUP side fixing plate 62 is omitted.

  As shown in FIGS. 1, 2, and 5, the cab overtrack 1 according to the present embodiment includes a frame (vehicle body side portion) 2, a cross member (vehicle body side portion) 3, and a front under-run protector (vehicle body side). 4, a cab 5, a step box 6, a step box lifting / lowering device (deployment means) 7, a front rack gear (deployment means) 8, a rear rack gear (deployment means) 9, and the like. ing.

  The frame 2 extends in the vehicle front-rear direction on both sides of the cab over truck 1 in the vehicle width direction. A pipe 10 extending downward is fixed to the front end portion of the frame 2. The cross member 3 is disposed at the front end portion of the frame 2 and connects between the front end portions of the frames 2. The FUP 4 is disposed below the frame 2 and the cross member 3 and extends in the vehicle width direction. A front bumper 11 is provided in front of the cross member 3 and the FUP 4 so as to extend in the vehicle width direction and cover the front end portions of the cross member 3 and the FUP 4.

  The pipe 10 has one end portion 10a, an intermediate portion 10b, and the other end portion 10c. The pipe 10 is disposed on the outer side in the vehicle width direction of the frame 2 and behind the FUP 4, and restricts rearward movement of the step box 6, which will be described later, at the time of a frontal collision of the cab over track 1. The one end portion 10 a is fixed to the outer surface in the vehicle width direction of the frame 2 via a bracket 12. The intermediate portion 10b extends downward from the outer end in the vehicle width direction of the one end portion 10a, and the other end portion 10c extends from the lower end of the intermediate portion 10b to the outer side in the vehicle width direction.

  The cab 5 includes a front panel 13, a pair of left and right side panels 14, a floor panel 15, a roof panel (not shown), a rear panel 16, and the like. The cab 5 is disposed above the frame 2 and the cross member 3 and is not particularly shown. It is supported from below by a mounting bracket or the like.

  The front panel 13 defines the front end of the cab over track 1. Each side panel 14 has a door opening (opening) 17 and is fixed to both ends of the front panel 13 in the vehicle width direction by welding or the like and extends rearward. A fender 18 and a substantially plate-like door 19 are attached to the side panel 14. The fender 18 is attached and fixed to the lower rear portion of the side panel 14 and covers substantially the upper half of the tire 20.

  As shown in FIG. 4, the door 19 includes an outer surface 21, a first lower surface 22, a first inner surface (flange side surface) 23, a second lower surface (flange lower surface) 24, and a second inner surface 25. . The front end of the door 19 is rotatably connected to the front end of the side panel 14 via a hinge (not shown) or the like, and the door 19 has a closed position that covers the door opening 17 (see FIG. 1). It opens and closes between an open position where the door opening 17 is opened outside the position in the vehicle width direction (see FIG. 2).

  When the door 19 is in the closed position, the outer surface 21 extends in the vertical direction outside the door 19 in the vehicle width direction. The first lower surface 22 extends inward in the vehicle width direction from the lower end of the outer surface 21, and the first inner surface 23 extends upward from the inner end in the vehicle width direction of the first lower surface 22. The second lower surface 24 extends outward in the vehicle width direction from the upper end of the first inner surface 23, and the second inner surface 25 extends upward from the inner end in the vehicle width direction of the second lower surface 24.

  As shown in FIGS. 1 and 2, the floor panel 15 has a floor center portion 26 and a floor side portion 27, extends rearward from the lower end portion of the front panel 15, and is fixed to the lower end portion of each side panel 14. To form the floor of the passenger compartment.

  The floor center portion 26 extends in the front-rear direction at the vehicle width direction center portion of the floor panel 15. The floor side portion 27 is bent from both ends in the vehicle width direction of the floor center portion 26 and is inclined outward in the vehicle width direction. A concave portion 28 recessed inward in the vehicle width direction is formed at the front end portion of the floor side portion 27, and a substantially plate-like fixed step plate 29 extending in the front-rear direction is provided in the concave portion 28. The fixed step plate 29 functions as a scaffold for passengers getting on and off the cab 5.

  The roof panel extends rearward from the upper end portion of the front panel 13 and is fixed to the upper end portion of each side panel 14. The rear panel 16 extends upward from the rear end portion of the floor panel 15 and is fixed to the rear end portion of each side panel 14 and the rear end portion of the roof panel.

  As shown in FIGS. 1 to 6, the step box 6 has a substantially box shape that is open on the outer side in the vehicle width direction, and is disposed between the FUP 4 and the pipe 10. The step box 6 includes a front plate portion 30, a side plate portion 31, a bottom plate portion 32, a rear plate portion 33, an upper plate portion (first step) 34, a movable step portion (second step) 35, and the like. The step box 6 is moved up and down by a step box elevating device 7 between a raised position below the fixed step plate 29 and between the front bumper 11 and the fender 18 and a lowered position moved below the door 19. To do.

  The front plate portion 30 is disposed outside the frame 2 in the vehicle width direction and behind the FUP 4 to partition the front end of the step box 6. The front plate portion 30 is provided with a rotation shaft (deployment means) 36, a front pinion gear (deployment means) 38, an upper pulley (deployment means) 40, and a lower pulley (deployment means) 42.

  The rotary shaft 36 penetrates the front plate portion 30 in the front-rear direction and is supported rotatably with respect to the front plate portion 30. The front pinion gear 38 is a circular gear, and is connected to the front end of the rotary shaft 36 so as to face the front surface of the front plate portion 30.

  The upper pulley 40 is connected to the rear end of the rotary shaft 36 and is disposed opposite to the rear surface of the front plate portion 30, and rotates in conjunction with the rotation of the front pinion gear 38. The lower pulley 42 is disposed below the upper pulley 40 in the vehicle width direction, and is rotatably supported by a shaft that protrudes rearward from the rear surface of the front plate portion 30. A belt 44 is wound around the upper pulley 40 and the lower pulley 42, and the lower pulley 42 rotates in conjunction with the rotation of the upper pulley 40.

  The side plate portion 31 extends rearward from the inner end in the vehicle width direction of the front plate portion 30. The bottom plate portion 32 has a flat portion 32a and a curved portion 32b formed in a saw-like shape like the saw portions 34b and 48b described later, and extends rearward from the lower end of the front plate portion 30. The flat surface portion 32a extends in the vehicle width direction outside the side plate portion 31 in the vehicle width direction. The curved portion 32b extends from the outer end in the vehicle width direction of the flat portion 32a so as to curve upward in the vehicle width direction.

  The rear plate portion 33 extends upward from the rear end of the bottom plate portion 32 and is fixed to the rear end of the side plate portion 31. The rear plate 33 is provided with a rotating shaft (deployment means) 37, a rear pinion gear (deployment means), an upper pulley (deployment means) 41, and a lower pulley (deployment means) 43 (not shown). Yes.

  The rotating shaft 37 penetrates the rear plate portion 33 in the front-rear direction and is supported rotatably with respect to the rear plate portion 33. The rear side pinion gear is a circular gear, and is connected to the rear end of the rotating shaft 37 so as to face the front surface of the rear plate portion 33.

  The upper pulley 41 is connected to the front end of the rotating shaft 37 and is disposed to face the front surface of the rear plate portion 33, and rotates in conjunction with the rotation of the rear pinion gear. The lower pulley 43 is disposed below the upper pulley 41 in the vehicle width direction, and is rotatably supported by a shaft that protrudes forward from the front surface of the rear plate portion 33. A belt 45 is wound around the upper pulley 41 and the lower pulley 43, and the lower pulley 43 rotates in conjunction with the rotation of the upper pulley 41.

  The upper plate portion 34 includes a plate portion 34a and a saw portion 34b. The upper plate portion 34 extends rearward from the upper end of the front plate portion 30 and is fixed to the upper end of the rear plate portion 33, and functions as a scaffold for passengers who get on and off the cab 5 when the step box 6 is in the lowered position.

  The plate portion 34 a is a metal substantially rectangular plate-like member erected along the front-rear direction, and is set to be thinner than the plate thickness of the side plate portion 31. The front end and the rear end of the plate portion 34a are fixed to the front plate portion 30 and the rear plate portion 33, respectively, and define the outer end in the vehicle width direction of the upper plate portion 34.

  The saw portion 34b includes a plurality of metal substantially rectangular plate-like members extending inward in the vehicle width direction with respect to the front plate portion 30, and a plurality of metal portions extending in the vehicle width direction rearward with respect to the front plate portion 30. The substantially rectangular plate-like members are arranged side by side in a lattice shape, and a plurality of substantially squares are partitioned. Each intersection where these plate-like members intersect is joined by welding or the like. Further, each plate-like member of the slat portion 34b is set to be thinner than the plate thickness of the side plate portion 31, and the front end, the rear end and the outer end in the vehicle width direction are respectively connected to the front plate portion 30, the rear plate portion 33 and the plate portion 34a. It is joined.

  The movable step portion 35 includes a front plate portion 46, a bottom plate portion 47, a side plate portion 48, a rear plate portion 49, and an upper plate portion 50, and functions as a scaffold for passengers getting on and off the cab 5 when in the deployed position. The movable step portion 35 is connected to the lower pulleys 42 and 43 so as to extend along the vehicle width direction, and a storage position that stands along the front-rear direction on the outer side in the vehicle width direction of the bottom plate portion 32 of the step box 6. Rotate between.

  The front plate portion 46 of the movable step portion 35 is connected to the lower pulley 42 and is disposed opposite to the rear surface of the front plate portion 30 of the step box 6 when in the storage position. The bottom plate portion 47 extends rearward from the lower end of the front plate portion 46.

  The side plate portion 48 includes a flat plate portion 48a that defines an outer end in the vehicle width direction and a saw portion 48b that is formed on the inner side in the vehicle width direction of the flat plate portion 48a, and is rearward from the outer end in the vehicle width direction of the front plate portion 46. And is fixed to the outer end of the bottom plate portion 47 in the vehicle width direction.

  The flat plate portion 48 a is a metal plate-like member, and is set to be thinner than the plate thickness of the side plate portion 31. The slat part 48b is formed in the same shape as the slat part 34b. That is, a plurality of metal substantially rectangular plate-like members extending rearward and upward with respect to the front plate portion 46 and a plurality of metal substantially rectangular plate-like members extending rearward and downward with respect to the front plate portion 46 are in a lattice shape. Are arranged side by side and a plurality of substantially squares are sectioned, and each intersection is joined by welding or the like. Each plate-like member of the slat portion 48 b is set to be thinner than the plate thickness of the side plate portion 31.

  The rear plate portion 49 extends upward from the rear end of the bottom plate portion 47 and is fixed to the rear end of the side plate portion 48. The rear plate portion 49 is disposed opposite to the front surface of the rear plate portion 33 of the step box 6 and is connected to the lower pulley 43. ing. The upper plate portion 50 extends rearward from the upper end of the front plate portion 46 and is fixed to the upper ends of the side plate portion 48 and the rear plate portion 49. The length of the upper plate portion 50 in the vehicle width direction is set shorter than the length of the bottom plate portion 47 in the vehicle width direction.

  As shown in FIG. 7, the step box lifting / lowering device 7 includes a front air cylinder 51, a rear air cylinder 52, a lift switch 53, a drop switch 54, a door sensor 55, a sound wave sensor 56, a vehicle speed sensor 57, a CPU 58, and the like. The step box 6 is moved up and down between the raised position and the lowered position. Although not particularly illustrated, the step box lifting / lowering device 7 is provided with a lock mechanism for holding the step box 6 in the lifted position so as to be releasable during traveling of the vehicle.

  As shown in FIGS. 5 and 6, the front air cylinder 51 has a front cylinder body 59 and a front shaft 60 and is disposed between the FUP 4 and the step box 6.

  The front cylinder body 59 has a substantially cylindrical shape, and is connected and fixed to the frame 2, the cross member 3, and the FUP 4 via the frame side fixing plate 61 and the FUP side fixing plate 62.

  The front shaft 60 has a substantially rod shape and is inserted into the front cylinder body 59 so as to be movable up and down. The front shaft 60 moves up and down in the front cylinder body 59 so that the entire front air cylinder 51 expands and contracts. The lower end 60a of the front shaft 60 is connected and fixed to the front surface of the front plate portion 30 of the step box 6 via the front shaft mounting bracket 63 and the like.

  The rear air cylinder 52 has a rear cylinder body 64 and a rear shaft 65 and is disposed between the step box 6 and the pipe 10.

  The rear cylinder body 64 has a substantially cylindrical shape, and is connected and fixed to the other end portion 10 c of the pipe 10 via a pipe side fixing plate 66. The rear shaft 65 has a substantially rod shape and is inserted into the rear cylinder body 64 so as to be movable up and down. The rear side shaft 65 moves up and down in the rear side cylinder body 64 so that the entire rear side air cylinder 52 expands and contracts. A lower end 65 a of the rear shaft 65 is connected and fixed to the rear surface of the rear plate portion 33 of the step box 6 via a rear shaft mounting bracket 67.

  The front air cylinder 51 and the rear air cylinder 52 are connected to the CPU 58 and receive a control signal from the CPU 58 to move the front shaft 60 and the rear shaft 65 up and down, and receive a stop signal from the CPU 58 to perform the vertical movement. Stop. Further, the front air cylinder 51 and the rear air cylinder 52 are expanded when the front shaft 60 and the rear shaft 65 are moved to the lowest position, that is, the front air cylinder 51 and the rear air cylinder 52 are most extended in the vertical direction. The lowest position signal is output to the CPU 58 in the most extended state, and when the front shaft 60 and the rear shaft 65 are moved to the uppermost position, that is, the front air cylinder 51 and the rear air cylinder 52 are most contracted in the vertical direction. In the most contracted state, the uppermost position signal is output to the CPU 58.

  The ascending switch 53 and the descending switch 54 are switches that are turned on by an input from the occupant when the occupant gets in and out of the cab 5, and are provided one on each of the outer side surface 21 and the second inner side surface 25 of the door 19. ing.

  The door sensor 55 outputs an open signal to the CPU 58 when the door 19 is in the open position, and outputs a close signal to the CPU 58 when in the closed position.

  The sonic sensor 56 is provided on the bottom plate portion 32 of the step box 6, for example. The sonic sensor 56 transmits ultrasonic waves downward from the bottom plate portion 32, and receives ultrasonic waves reflected by the object to be detected from the bottom plate portion 32 to the ground (or an obstacle below the bottom plate portion). , And the distance L is output to the CPU 58.

  The CPU 58 includes an ON signal from the ascending switch 53, an ON signal from the descending switch 54, an open or closed signal from the door sensor 55, and a vehicle speed signal from a vehicle speed sensor 57 that detects the vehicle speed V of the cab over truck 1. And the distance L from the sound wave sensor 56 are input. Based on the ON signal from the ascending switch 53 and the descending switch 54, the open signal or the closing signal from the door sensor 55, the vehicle speed signal, and the distance L from the sound wave sensor 56, the CPU 58 The air cylinder 52 is controlled to move the front shaft 60 and the rear shaft 65 upward or downward.

  As shown in FIG. 5, the front rack gear 8 has a front idle running portion 8 a and a front operating portion 8 b and is fixed to the FUP 4. The front idle running portion 8 a is formed in a substantially flat plate shape, and is disposed on the outer side in the vehicle width direction than the front air cylinder 51 and on the inner side in the vehicle width direction than the front pinion gear 38. The front operation portion 8b is formed below the front idle running portion 8a, and the outer side surface in the vehicle width direction is cut into teeth and formed in an uneven shape.

  The rear rack gear 9 includes a rear idler 9 a and a rear operating part (not shown), and is fixed to the pipe-side fixing plate 66. The rear idling portion 9a is formed in a substantially flat plate shape, and is disposed on the outer side in the vehicle width direction than the rear air cylinder 52 and on the inner side in the vehicle width direction with respect to the rear pinion gear. The rear working portion is formed below the rear idle running portion 9a, and the outer side surface in the vehicle width direction is cut into teeth and formed in an uneven shape.

  As shown in FIGS. 1, 3 and 4, when the door 19 is set to the closed position and the door is closed, the front air cylinder 51 and the rear air cylinder 52 are set to the most contracted state, and the step box 6 is While being set to the raised position, the movable step portion 35 is set to the storage position. In this door closed state, the vehicle width direction outer end surface of the upper plate portion 34 of the step box 6 faces and opposes the first inner side surface 23 of the lower portion of the door 19, and the vehicle plate width direction outer upper surface of the upper plate portion 34 is The side surface 48 of the movable step portion 35 faces the second lower surface 24 in the vicinity, and the outer end surface in the vehicle width direction faces the first inner surface 23 in the vicinity. Thus, when the door is in the closed state, the opening on the outer side in the vehicle width direction of the step box 6 is covered by the lower part of the door 19, and the opening on the lower side in the vehicle width direction of the step box 6 is Covered. Further, when the door is in the closed state, the front pinion gear 38 and the rear pinion gear face the front idle running portion 8a and the rear idle running portion 9a of the rear rack gear 9, respectively.

  When the front shaft 60 and the rear shaft 65 move downward, the step box 6 moves downward as the front shaft 60 and the rear shaft 65 move downward, and the front pinion gear 38 and the rear pinion gear move to the front rack gear 8. And it moves downward along the rear rack gear 9.

  The front pinion gear 38 and the rear pinion gear do not rotate when moving downward along the front idler 8a and the rear idler 9a of the rear rack gear 9, and the front actuator 8b and Rotates when moving downward along the rear working part. Specifically, when the front pinion gear 38 moves downward along the front operating portion 8b, the front pinion gear 38 rotates counterclockwise when viewed from the front of the vehicle, and the rear pinion gear rotates clockwise when viewed from the rear of the vehicle. Rotate to.

  As the front pinion gear 38 and the rear pinion gear rotate, the upper pulleys 40 and 41 and the lower pulleys 42 and 43 rotate, and the movable step portion 35 in the upright state has the lower pulleys 42 and 43 as axes. The step box 6 is rotationally moved outward in the vehicle width direction and is set at the unfolded position. In this embodiment, when the upper plate portion 50 of the movable step portion 35 is moved downward from the lower end of the door 19 as the step box 6 is moved downward, the vehicle width direction of the movable step portion 35 is determined. The front side actuating part 8b and the rear side actuating part are arranged so that the rotational movement to the outside starts.

  As shown in FIGS. 2 and 4 to 6, when the movable step portion 35 is in the unfolded position, the upper plate portion 50 of the movable step portion 35 is more than the outer end in the vehicle width direction of the upper plate portion 34 of the step box 6. The bottom plate portion 47 stands up on the outer side in the vehicle width direction, and faces the inner side surface in the vehicle width direction of the side plate portion 31 of the step box 6. The side plate portion 48 of the movable step portion 35 extends in the vehicle width direction, and the flat plate portion 48a comes into contact with the upper end portion in the vehicle width direction of the curved portion 32b of the step box 6 and is supported from below. When the movable step portion 35 is set at the unfolded position, the movable step portion 35 at the unfolded position, the upper plate portion 34 of the step box 6 at the lowered position, and the fixed step plate 29 are stepped onto the cab 5 in a stepped manner. Serves as a scaffolding for passengers.

  Next, processing executed by the CPU 58 will be described separately for step box lowering processing and step box rising processing. Although not particularly illustrated, the storage unit (memory) of the CPU 58 is provided with a vehicle speed storage area for sequentially storing the vehicle speed V and a distance storage area for sequentially storing the distance L.

  In the step box lowering process, as shown in FIG. 8, it is determined whether an ON signal is input from the lowering switch 54 (step S1). If it is determined that the ON signal is input from the descent switch 54 (step S1: Yes), the latest vehicle speed V is read from the vehicle speed storage area, and whether or not the vehicle speed V is 0 km / h, that is, the cab over truck 1 is It is determined whether or not it is stopped (step S2). If it is determined that the vehicle speed V is 0 km / h (step S2: Yes), control signals are output to the front air cylinder 51 and the rear air cylinder 52 (step S3), and the front shaft 60 and the rear shaft 65 are moved downward. Move.

  Next, it progresses to step S4 and the newest distance L is read from a distance memory area (step S4). Then, it is determined whether or not the distance L exceeds 3 cm, that is, whether or not the bottom plate portion 32 of the step box 6 is sufficiently separated from the ground (step S5), and it is determined that the distance L exceeds 3 cm. If so (step S5: Yes), it is determined whether the lowest position signal has been input (step S6). If it is determined that the lowest position signal has been input (step S6: Yes), stop signals are output to the front air cylinder 51 and the rear air cylinder 52 (step S7), and the front shaft 60 and the rear shaft are output. The downward movement of 65 is stopped and this process is terminated.

  On the other hand, if an ON signal is not input from the lowering switch 54 in step S1 (step S1: No), it is determined whether an open signal is input from the door sensor 55 (step S8). If it is determined that an open signal is input (step S8: Yes), the process proceeds to step S2. If it is determined that an open signal is not input (step S8: No), steps S2 to S7 are performed. This process is terminated without executing the process.

  Further, when it is determined in step S2 that the vehicle speed V exceeds 0 km / h (step S2: No), that is, when the cab over truck 1 is traveling, the processes of steps S3 to S7 are performed. This process is terminated without executing.

  Furthermore, when it determines with the distance L being 3 cm or less in step S5 (step S5: No), ie, when the baseplate part 32 of the step box 6 is approaching the ground, it progresses to step S7, front side A stop signal is output to the air cylinder 51 and the rear air cylinder 52.

  If it is determined in step S6 that the lowest position signal has not been input (step S6: No), the process returns to step S4, and the distance L is read from the distance storage area.

  In the step box rising process, as shown in FIG. 9, it is determined whether or not an ON signal is input from the rising switch 53 (step S11). When it is determined that an ON signal is input from the ascent switch 53 (step S11: Yes), control signals are output to the front air cylinder 51 and the rear air cylinder 52 (step S12), and the front shaft 60 and the rear shaft 65 are turned on. Move upward.

  Next, it progresses to step S13 and it is judged whether the highest position signal was input (step S13). If it is determined that the uppermost position signal has been input (step S13: Yes), stop signals are output to the front air cylinder 51 and the rear air cylinder 52 (step S14), and this process ends.

  On the other hand, when the ON signal is not input from the raising switch 53 in Step S11 (Step S11: No), it is determined whether or not the close signal is input from the door sensor 55 (Step S15). If it is determined that the closing signal has been input (step S15: Yes), the process proceeds to step S12. If it is determined that the closing signal has not been input (step S15: No), steps S12 to S14 are performed. This process is terminated without executing the process.

  Thus, according to the present embodiment, the movable step portion 35 is disposed below the upper plate portion 34. When the occupant gets on and off the cab 5, the movable step portion 35 is set to the deployed position and functions as a scaffold, and when the door 19 is closed, the movable step portion 35 is set to the stowed position and stands up along the front-rear direction. To do. When the door 19 is in the closed state, the outer end surface in the vehicle width direction of the upper plate portion 34 faces the first inner side surface 23 in the lower portion of the door 19 and opposes the outer upper surface in the vehicle width direction of the upper plate portion 34. Opposite the second lower surface 24 in proximity. Further, the outer end surface of the side plate portion 48 in the vehicle width direction opposes the first inner side surface 23 at the bottom of the door 19 in the vicinity. When the door 19 moves toward the upper plate portion 34 and the side plate portion 48 at the time of a frontal collision (particularly during an offset collision), the outer end surface in the vehicle width direction of the upper plate portion 34 and the outer end surface in the vehicle width direction of the side plate portion 48 are first. 1 is in contact with the inner surface 23, and the upper surface of the upper plate portion 34 is in contact with the second lower surface 24.

  As a result, the movement of the upper plate portion 34 and the movable step portion 35 supported by the frame 2, the cross member 3, and the FUP 4 to the outside in the vehicle width direction and upward is restricted. Further, the pipe 10 restricts the rearward movement of the step box 6, that is, the upper plate portion 34 and the movable step portion 35. In this state, the upper plate portion 34 and the movable step portion 35 are pressed rearward by the front plate portion 30, so that the upper plate portion 34 and the movable step portion 35 are reliably crushed and deformed.

  Specifically, as shown in FIG. 10, when a collision load F from the front is applied to the front plate portion 30 during a frontal collision, the side plate portion 31 undergoes local bending deformation at an initial stage of deformation. It occurs and deforms into a generally square shape. On the other hand, in the upper plate portion 34, buckling fine deformation occurs between the intersecting portions of the plate members 34a and 34b set to be thinner than the plate thickness of the side plate portion 31, respectively. Also in the side plate portion 48, similar to the upper plate portion 34, buckling fine deformation occurs in the plate-like members of the flat plate portion 48 a and the saw portion 48 b. Further, in the bottom plate portion 32, buckling fine deformation occurs similarly to the upper plate portion 34. Thus, at the time of a vehicle collision, the upper plate portion 34, the side plate portion 48, and the bottom plate portion 32 are efficiently crushed in the front-rear direction without being locally deformed.

  Therefore, at the time of a frontal collision, the upper plate part 34 and the movable step part 35 that serve as a foothold for the occupant can be actively deformed in a desired deformation mode to efficiently absorb the collision energy.

  Further, in the slats 34b and 48b, a plurality of plate-like members are arranged in a grid and the intersections of the plate-like members are joined, so that each plate-like member buckles between the intersections at the time of a frontal collision. Therefore, local bending deformation does not occur in the upper plate portion 34 and the side plate portion 48. For this reason, collision energy can be absorbed more efficiently than the case where the upper plate part 34 and the side plate part 48 are simply formed of plate-like members.

  Furthermore, since the bottom plate portion 32 of the step box 6 is formed in a saw-like shape, the bottom plate portion 32 is crushed and deformed together with the upper plate portion 34 and the side plate portion 48. Therefore, the bottom plate portion 32 of the step box 6 can be actively deformed in a desired deformation mode to efficiently absorb the collision energy.

  In addition, since the movable step portion 35 is in an upright state at the time of a vehicle collision, the movable step portion 35 can be crushed and deformed in the vertical direction in accordance with the vertical collision load. Therefore, it is possible to effectively absorb the collision energy for the collision load in the vertical direction among the collision loads input at the time of the vehicle collision.

  Further, when the vehicle travels, the outer side in the vehicle width direction of the step box 6 is covered by the lower portion of the door 19 and the movable step portion 35 at the storage position. Compared to the above, the air resistance of the cab over track 1 can be reduced.

  Further, when the step box 6 is in the lowered position, the movable step portion 35 in the unfolded position, the upper plate portion 34 of the step box 6 in the lowered position, and the fixed step plate 29 function in a staircase shape and function as a passenger's scaffold. It is possible to improve boarding / exiting performance when the passenger gets on / off the cab 5.

  In the present embodiment, the case has been described in which the saw portions 34b and 48b are formed by arranging a plurality of plate-like members arranged in a lattice shape and partitioning a plurality of substantially squares. A plurality of plate-like members may be arranged side by side so as to form a square.

  Moreover, it is not restricted to joining all the crossing parts of the snowboard parts 34b and 48b, and there may be a part which is not joined. In other words, the crossing portions may be appropriately joined within a range in which the above-described snowboard portions 34b and 48b can be deformed.

  Further, the upper plate portion 34 and the side plate portion 48 may be simply formed of a flat plate member without providing the saw portions 34b and 48b.

  Further, the step box 6 is moved based on the ON signal from the ascending switch 53 or the descending switch 54. For example, an interior light switch for turning on / off the interior light of the cab 5 in conjunction with opening / closing of the door 19 ( The step box 6 may be moved based on a signal from (not shown). Alternatively, the step box 6 may be moved based on a signal from a remote controller that performs radio wave transmission or infrared transmission. When the step box 6 is moved based on a signal from the remote controller, a receiver that receives a signal from the remote controller may be provided in the cab overtrack 1.

  The distance L from the bottom plate portion 32 to the ground (or an obstacle below the bottom plate portion) is detected by the acoustic wave sensor 56, and the distance L may be detected by an infrared sensor or a laser sensor.

  Furthermore, when the step box 6 moves downward, the movement of the step box 6 is stopped before the bottom plate portion 32 comes into contact with the ground or the like. For example, the load generated in the front air cylinder 51 and the rear air cylinder 52 is reduced. A sensor for detection may be provided, and after detecting a load due to contact between the bottom plate portion 32 and the ground by this sensor, the step box 6 may be moved upward by about 3 cm and stopped.

  Further, the case where the rear cylinder body 59 is connected and fixed to the other end portion 10c of the pipe 10 via the pipe side fixing plate 66 has been described. However, as shown in FIG. 11, the stay 68 extending backward from the FUP 4 is stepped. The pipe side fixing plate 66 may be fixed to the rear end of the stay 68 by being provided on the inner side in the vehicle width direction than the box 6.

  Further, the front air cylinder 51 and the rear air cylinder 52 are not limited to being arranged in front of and behind the step box 6, and may be arranged inside the step box 6 in the vehicle width direction.

  Furthermore, the step box 6 is not limited to be moved up and down by the front air cylinder 51 and the rear air cylinder 52, but may be moved by hydraulic cylinders or linear motors provided before and after the step box 6.

  Further, a spring spring may be connected to the front pinion gear 38 and the rear pinion gear, and the standing state of the movable step portion 35 at the storage position may be maintained by the urging force of the spring spring.

  Further, when the door 19 is in the closed state, the vehicle width direction outer end surface of the upper plate portion 34 and the vehicle width direction outer end surface of the side plate portion 48 are in contact with the first inner side surface 23, and the vehicle width of the upper plate portion 34 is The upper surface in the direction and the second lower surface 24 may be in contact with each other.

  Furthermore, a concave groove extending in the front-rear direction may be formed on the inner surface of the door 19 so that the upper plate portion 34 and the groove are fitted when the door 19 is in a closed state.

  Next, a second embodiment of the present invention will be described with reference to the drawings.

  FIG. 12 is a sectional view showing the door and the step box. In the second embodiment, the aspect of the door 19 of the first embodiment is changed, and the length of the upper plate portion 34 of the step box 6 in the vehicle width direction is slightly shortened. Since other configurations are the same as those in the first embodiment, the same reference numerals are given and description thereof is omitted.

  As shown in FIG. 12, the door 69 includes an outer surface 70, a first lower surface 71, a first inner surface 72, a second lower surface 73, a second inner surface (flange side surface) 74, and a third lower surface (flange lower surface) 75. And a third inner surface 76.

  When the door is closed, the outer side surface 70 defines the outer end in the vehicle width direction of the cab 5 together with the outer side surface in the vehicle width direction of the side panel 14. The first lower surface 71 extends inward in the vehicle width direction from the lower end of the outer surface 70, and the first inner surface 72 extends upward from the inner end in the vehicle width direction of the first lower surface 22. The second lower surface 73 extends outward in the vehicle width direction from the upper end of the first inner surface 72, and the second inner surface 74 extends upward from the inner end in the vehicle width direction of the second lower surface 73. The third lower surface 75 extends outward in the vehicle width direction from the upper end of the second inner side surface 74, and the third inner side surface 76 curves from the inner end in the vehicle width direction of the third lower surface 75 outward in the vehicle width direction. Yes.

  In this door closed state, the outer end surface in the vehicle width direction of the upper plate portion 34 faces the second inner side surface 74 in close proximity, and the upper outer surface in the vehicle width direction of the upper plate portion 34 faces in close proximity to the third lower surface 75. To do. In addition, the outer end surface in the vehicle width direction of the side plate portion 48 faces the first inner side surface 72 in close proximity, and the upper surface of the upper plate portion 50 approaches the second lower surface 73 in close proximity.

  In the present embodiment, when the door 69 moves toward the upper plate portion 34 and the movable step portion 35 at the time of a frontal collision, the outer end surface in the vehicle width direction of the upper plate portion 34 comes into contact with the second inner side surface 74, and the upper plate The upper surface of the portion 34 in the vehicle width direction is in contact with the third lower surface 75. Furthermore, the outer end surface in the vehicle width direction of the side plate portion 48 contacts the first inner side surface 72, and the upper surface of the upper plate portion 50 contacts the second lower surface 73. In other words, since the upward movement of the upper plate portion 34 and the movable step portion 35 is restricted by the third lower surface 75 and the second lower surface 73 at the time of a frontal collision, the upper plate portion 34 and the movable step portion 35 are more reliably secured. Can be crushed and deformed.

  Next, a third embodiment of the present invention will be described with reference to the drawings.

  FIG. 13 is a sectional view showing the door and the step box. The third embodiment is different in that the aspect of the door 19 and the step box 6 of the first embodiment is changed and the movable step portion 88 is manually rotated. Since other configurations are the same as those in the first embodiment, the same reference numerals are given and description thereof is omitted.

  As shown in FIG. 13, the door 77 has an outer surface 78, a first lower surface 79, a first inner surface (flange side surface) 80, a second lower surface (flange lower surface) 81, and a second inner surface 82. .

  The step box 83 includes a front plate portion, a side plate portion 84, a bottom plate portion 85, a rear plate portion 86, and a movable step portion (step) 87.

  The front plate section defines the front end of the step box 83. The side plate portion 84 extends rearward from the inner end in the vehicle width direction of the front plate portion. The bottom plate portion 85 has a flat portion 85a and a curved portion 85b formed in a saw-tooth shape, and extends rearward from the lower end of the front plate portion. The flat surface portion 85a defines the inner upper surface of the bottom plate portion 85 in the vehicle width direction. The curved portion 85b extends from the outer end in the vehicle width direction of the flat portion 85a so as to curve upward in the vehicle width direction. The rear plate portion 86 extends upward from the rear end of the bottom plate portion 85 and is fixed to the rear end of the side plate portion 84. The front plate portion and the rear plate portion 86 are each provided with a rotation shaft (deployment means) 92.

  The movable step portion 87 includes a front plate portion 88, a bottom plate portion 89, a side plate portion 90, a rear plate portion, and an upper plate portion 91, and is rotatably supported by a rotation shaft 92. The movable step portion 87 rotates and moves between a deployment position extending along the vehicle width direction and a storage position standing along the front-rear direction on the outside of the bottom plate portion 85 of the step box 83 in the vehicle width direction. Sometimes it functions as a scaffolding for passengers getting on and off the cab 5.

  The front plate portion 88 of the movable step portion 87 is connected to the rotary shaft 92 and is disposed opposite to the rear surface of the front plate portion of the step box 83 when in the storage position. The bottom plate portion 89 extends rearward from the lower end of the front plate portion 88. The side plate portion 90 extends rearward from the outer end in the vehicle width direction of the front plate portion 88 and is fixed to the outer end in the vehicle width direction of the bottom plate portion 89.

  The rear plate portion extends upward from the rear end of the bottom plate portion 89 and is fixed to the rear end of the side plate portion 90. The rear plate portion is disposed to face the front surface of the rear plate portion 86 of the step box 83 and is connected to the rotary shaft 92. . The upper plate portion 91 extends rearward from the upper end of the front plate portion 88 and is fixed to the upper ends of the side plate portion 90 and the rear plate portion. The length of the upper plate portion 91 in the vehicle width direction is set shorter than the length of the bottom plate portion 89 in the vehicle width direction.

  In this embodiment, when an occupant gets on and off the cab 5, the door 77 is set to an open position, and the movable step portion 87 is manually set as a deployment means to function as a scaffold. When the occupant finishes getting on and off the cab 5, the movable step portion 87 is manually set to the storage position, and the door 77 is set to the closed position.

  When the door is in the closed state, the outer end surface in the vehicle width direction of the side plate portion 90 faces the first inner side surface 80 at the lower portion of the door 77 and the upper surface of the upper plate portion 91 faces the second lower surface 81. To do.

  Accordingly, when the door 77 moves to the movable step portion 87 side at the time of a frontal collision, the first inner side surface 80 and the second lower surface 81 at the lower portion of the door 77 are the outer end surface in the vehicle width direction of the side plate portion 90 and the upper plate portion 91. Since the movable step portion 87 is pressed in a standing state, the movable step portion 87 can be crushed and deformed in the vertical direction as compared with the case where the movable step portion 87 is arranged extending in the vehicle width direction. it can. Accordingly, it is possible to increase the amount of collision energy absorbed with respect to the collision load in the vertical direction among the collision loads input at the time of the vehicle collision.

  Next, a fourth embodiment of the present invention will be described with reference to the drawings.

  FIG. 14 is a sectional view showing a door and a step box. In addition, 4th Embodiment changes the aspect of the door 19 and step box 6 of 1st Embodiment. Since other configurations are the same as those in the first embodiment, the same reference numerals are given and description thereof is omitted.

  As shown in FIG. 14, the door 93 has an outer side surface 94, a first lower surface 95, a first inner side surface 96, a second lower surface 97, and a second inner side surface (flange side surface) 98.

  When the door 93 is in the closed position, the outer side surface 94 extends in the vertical direction outside the door 93 in the vehicle width direction. The first lower surface 95 extends inward in the vehicle width direction from the lower end of the outer surface 94, and the first inner surface 96 extends upward from the inner end in the vehicle width direction of the first lower surface 95. The second lower surface 97 extends outward in the vehicle width direction from the upper end of the first inner side surface 96, and the second inner side surface 98 extends upward from the inner end in the vehicle width direction of the second lower surface 97.

  The step box 99 has a substantially box shape that opens on the outer side in the vehicle width direction, and includes a front plate portion, a side plate portion 100, a bottom plate portion, a rear plate portion 101, and an upper plate portion (step) 102.

  The front plate section defines the front end of the step box 99. The side plate portion 100 extends rearward from the inner end in the vehicle width direction of the front plate portion. The bottom plate portion extends rearward from the lower end of the front plate portion. The rear plate portion 101 extends upward from the rear end of the bottom plate portion and is fixed to the rear end of the side plate portion 100.

  The upper plate portion 102 is a substantially rectangular plate-shaped member made of metal, extends rearward from the upper end of the front plate portion, is fixed to the upper end of the rear plate portion 101, and functions as a scaffold for passengers getting on and off the cab 5.

  In the present embodiment, when the door 93 is in the closed state, the first inner side surface 96 and the second lower surface 97 of the lower portion of the door 93 are close to the outer end surface in the vehicle width direction and the outer upper surface in the vehicle width direction of the upper plate portion 102, respectively. Facing each other. When the door 93 moves toward the upper plate portion 102 at the time of a frontal collision, the first inner side surface 96 and the second lower surface 97 of the lower portion of the door 93 are connected to the vehicle width direction outer end surface and the vehicle width direction outer side upper surface of the upper plate portion 102. Since the upper plate portion 102 is pressed rearward by the front plate portion in a state where they are in contact with each other and the movement in the vehicle width direction outside and upward is restricted, the upper plate portion 102 is surely crushed and deformed. Therefore, at the time of a frontal collision, the upper plate part 102 serving as a scaffold for the occupant can be actively deformed in a desired deformation mode to efficiently absorb the collision energy.

  As mentioned above, although the embodiment to which the invention made by the present inventor is applied has been described, the present invention is not limited by the discussion and the drawings that form part of the disclosure of the present invention according to this embodiment. That is, it should be added that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

  It is applicable to a vehicle having a door and a step.

It is a side view which shows the step box of a raise position. It is a side view which shows the step box of a lowered position. It is a perspective view which shows a step box. FIG. 4 is a sectional view taken along line AA in FIG. 3. It is a perspective view which shows the attachment structure of a step box. It is a side view which shows the attachment structure of a step box. It is a block diagram of a step box lifting / lowering device. It is a flowchart which shows a step box descending process. It is a flowchart which shows a step box raise process. It is a figure which shows the state where the step box was crushed at the time of front collision. It is a top view which shows the other attachment structure of a step box. It is sectional drawing which shows the other aspect of a door. It is sectional drawing which shows the other aspect of a door. It is sectional drawing which shows the other aspect of a door.

Explanation of symbols

2 Frame (vehicle body side)
3 Cross member (vehicle body side)
4 Front underrun protector (vehicle side)
5 Cab 7 Step box lifting device (deployment means)
8 Front rack gear (deployment means)
9 Rear rack gear (deployment means)
17 Door opening (opening)
19 Door 23 1st inside surface (flange side)
24 Second bottom surface (flange bottom surface)
34 Upper plate (first step)
35 Movable step part (second step)
36 Rotating shaft (deployment means)
37 Rotating shaft (deployment means)
38 Front pinion gear (deployment means)
40 Upper pulley (deployment means)
41 Upper pulley (deployment means)
42 Lower pulley (deployment means)
43 Lower pulley (deployment means)
44 Belt (deployment means)
45 Belt (deployment means)
69 Door 74 Second inner side (flange side)
75 Third bottom surface (flange bottom surface)
77 Door 80 1st inside surface (flange side)
81 2nd bottom surface (flange bottom surface)
87 Movable step part (step)
92 Rotating shaft (deployment means)
93 Door 96 1st inside surface (flange side)
97 1st bottom surface (flange bottom surface)
102 Upper plate (step)

Claims (3)

With the cab,
A door that opens and closes an opening on the outside of the cab in the vehicle width direction;
A step that is supported by a vehicle body side portion and extends in the front-rear direction and has a substantially plate-like outer shape that serves as a scaffolding for an occupant to get on and off the cab from the opening,
The lower part of the door includes a flange side face facing the outer end surface in the vehicle width direction of the step and a flange lower face facing the upper face of the step in a closed state where the door covers the opening. The vehicle side part structure characterized by having. The vehicle side part structure according to claim 1,
And a deployment means for supporting the step on the side of the vehicle body movably between a storage position standing along the front-rear direction and a deployment position extending along the vehicle width direction and functioning as the scaffold,
When the door is in the closed state, the side surface of the flange faces the outer end surface in the vehicle width direction of the step set at the storage position, and the lower surface of the flange is an upper surface of the step set at the storage position. The vehicle side part structure characterized by facing in the vicinity. With the cab,
A door that opens and closes an opening on the outside of the cab in the vehicle width direction;
A first step having a substantially plate-like outer shape that is supported by a vehicle body side portion and extends in the front-rear direction and serves as a scaffolding for an occupant to get on and off the cab from the opening;
A second step having a substantially plate-like outer shape disposed below the first step;
A deploying means for supporting the second step on the side of the vehicle body movably between a stowed position standing along the front-rear direction and a deploying position extending along the vehicle width direction and functioning as the scaffold; With
The lower portion of the door is at least a vehicle width direction outer end surface of the first step or a vehicle width direction outer end surface of the second step set at the storage position when the door is in a closed state covering the opening. A flange side face that is close to one side and a flange lower face that is close to and faces at least one of the upper face of the first step or the upper face of the second step set at the storage position. Vehicle side part structure.

Images