JP2017087833A - Vehicle comprising load-carrying platform with stair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a vehicle comprising a load-carrying platform provided with a stair which is always supported in a stable state.SOLUTION: A van type truck comprising a load-carrying platform 3 with a stair has: an opening 10 provided on a back face 6 of the load-carrying platform 3; a roof 30 which is rotatably provided at an upper part of the back face 6 of the load-carrying platform 3 and which is operated between a closed state of covering a part of the opening 10 and an open state of opening the part of the opening 10; a stair 40 which is rotatably provided at a lower part of the back face 6 of the load-carrying platform 3 and which is operated between a closed state of covering another part of the opening 10 and an open state of opening said another part of the opening 10; and a rear bumper 20 which supports the stair 40 operated in the open state. The stair 40 operated in the closed state is overlapped on the roof 30 operated in the closed state, thereby maintaining the roof 30 in the closed state, and the rear bumper 20 is positioned below the stair 40 operated in the open state, and is brought into contact with the stair 40, thereby supporting the stair 40.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle such as a truck or a towed vehicle, and more particularly to a vehicle including a loading platform with stairs.

  Currently, various trucks and towed vehicles have been developed and put into practical use, but these trucks and towed vehicles are called loading platforms that allow people to ride on and load luggage (when passengers ride, they are called "passenger vehicles"). It is common in that it is equipped with. For example, a loading platform included in a van type truck, which is a kind of truck, is mounted on a chassis provided with a cab and is integrated with the cab. Further, the loading platform included in the tow vehicle is connected to the tow vehicle and integrated with the tow vehicle. The loading platform (connected to the towing vehicle) provided by the towing vehicle is particularly called a “trailer”.

  Most of the loading platforms of trucks and towed vehicles are a floor board, a front panel and a rear panel that are located on both sides in the longitudinal direction of the floor board, and a pair of side panels that are located on both sides in the width direction of the floor board and face each other. And a ceiling panel facing the floor board. Here, the longitudinal direction of the floor board is the same as the traveling direction of the truck or towed vehicle.

  The loading platform as described above is provided with at least one opening. By using this opening as an entrance, a person can enter and leave the loading platform, and a luggage can be taken in and out of the loading platform. In many cases, the opening as the doorway is provided in the side panel or the back panel of the loading platform.

  The loading platform may be provided with ladders, stairs, steps, and the like in order to make it easy for people to enter and leave the loading platform and to load and unload luggage. Patent Document 1 describes a step slidably provided at the lower part of the rear door of the loading platform. When this step is used, the step is pulled out along the guide rail provided at the bottom of the loading platform, and the end (lower end) of the pulled out step is supported on the ground surface.

JP 2003-31366 A (paragraph 0003, FIG. 8)

  The lower end of the step described in Patent Document 1 is supported by the ground surface. For this reason, when the ground surface is not flat or the ground surface is inclined, the support of the step becomes unstable. For example, when the truck described in Patent Document 1 is stopped on rough terrain, the support of the step becomes unstable or the use of the step becomes difficult.

  An object of the present invention is to realize a vehicle including a loading platform provided with stairs that are supported in a stable state at all times.

  The vehicle of the present invention is a vehicle including a loading platform with stairs, and is provided at an opening provided on the back surface of the loading platform and at an upper portion of the back surface of the loading platform, and a part of the opening. A roof that is operated in a closed state that covers the opening and an open state that opens the part of the opening, and a lower part of the back surface of the loading platform that is pivotally provided to cover the other part of the opening A staircase that is operated to a closed state and an open state that opens the other part of the opening; and a support that supports the staircase that is operated to the open state. The stairs operated in the closed state overlap the roof operated in the closed state to maintain the roof in the closed state, and the support portion is located below the stairs operated in the open state, And it contacts the said staircase and supports the said staircase.

  In one aspect of the present invention, the staircase is spanned between a bracket that is rotatably attached to a rear frame of the cargo bed, a pair of side plates that are fixed to the bracket, and that face each other, and the pair of side plates. And a plurality of treads.

  In another aspect of the present invention, the bracket is provided with a contact portion that contacts the support portion when the staircase is operated in an open state.

  In another aspect of the present invention, a rear bumper functions as the support portion.

  In another aspect of the present invention, there is provided a drive source for rotating the staircase from the closed state to the open state or rotating the staircase from the open state to the closed state.

  In another aspect of the invention, the drive source is a hydraulic cylinder.

  In another aspect of the present invention, a gas spring that assists in turning the roof from the closed state to the open state is provided.

  ADVANTAGE OF THE INVENTION According to this invention, a vehicle provided with the loading platform provided with the staircase always supported in the stable state is implement | achieved.

It is a whole perspective view of a van type truck. (A) is a front view which shows the roof and staircase in an open state, (b) is a side view which shows the roof and staircase in an open state. (A) is a front view which shows the roof and staircase in a closed state, (b) is a side view which shows the roof and staircase in a closed state. It is an expansion perspective view of stairs.

  Hereinafter, an example of an embodiment of a vehicle of the present invention will be described. The vehicle according to the present embodiment is a van-type truck having a box-type loading platform, and is a type of van-type truck generally called “Dryn”.

  As shown in FIG. 1, a van-type truck 1 according to the present embodiment includes a chassis provided with a cab 2 and a box-type cargo bed 3 mounted on the chassis. The loading platform 3 is located on both sides in the longitudinal direction of the floor plate 4, the front surface 5 and the back surface 6 facing each other, the right side surface 7 and the left side surface 8 facing each other in the width direction of the floor plate 4, It is formed from the ceiling 9 facing the floor plate 4. In the present embodiment, the side surface on the right side in the traveling direction of the van type truck 1 is defined as the right side surface 7 and the side surface on the left side in the traveling direction is defined as the left side surface 8, but this definition is merely a definition for convenience of explanation.

  The front surface 5, the rear surface 6, the right side surface 7, the left side surface 8, and the ceiling 9 of the loading platform 3 are each formed by a panel material in which a heat insulating material is sandwiched between two aluminum plates. Therefore, in the following description, the front panel 5, the rear panel 6, the right panel 7, the left panel 8, and the panel material forming the ceiling 9 are represented by the front panel 5a, the rear panel 6a, the right panel 7a, and the left panel. It may be called the face panel 8a and the ceiling panel 9a. Each panel material forming each surface of the cargo bed 3 is fixed to a metal frame mounted on the chassis to form a predetermined surface.

  As shown in FIG. 1, the rear panel 6 a is provided with an opening 10 serving as an entrance to the loading platform 3. The opening 10 has a rectangular shape that is elongated in the vertical direction, and its upper end reaches the vicinity of the ceiling panel 9 a and its lower end reaches the floor plate 4. Inside the back panel 6a, there is provided a sliding door 11 that can slide along the back panel 6a. When the illustrated sliding door 11 is slid in a direction close to the left side panel 8a, the opening 10 is closed by the sliding door 11. On the other hand, when the sliding door 11 closing the opening 10 is slid in the direction approaching the right side panel 7a, the opening 10 is opened.

  A rear bumper 20 is provided below the back panel 6a. The rear bumper 20 is fixed to the rear end of the chassis, the side surface 20a of the rear bumper 20 is substantially parallel to the back panel 6a, and the upper surface 20b of the rear bumper 20 is substantially parallel to the floor plate 4 and the ceiling panel 9a.

  As shown in FIGS. 2 and 3, a roof 30 and a staircase 40 are provided on the back surface 6 of the loading platform 3. The roof 30 is rotatably provided at the upper part of the back surface 6, and the staircase 40 is rotatably provided at the lower part of the back surface 6. The roof 30 is operated in a closed state (a state shown in FIG. 3) that covers a part of the opening 10 and an open state (a state shown in FIG. 2) that opens a part of the opening 10. Further, the staircase 40 has a closed state (the state shown in FIG. 3) that covers the other part of the opening 10, and an open state (the state shown in FIG. 2) that opens the other part of the opening 10. To be operated. As most clearly shown in FIG. 3B, the staircase 40 operated to the closed state overlaps the roof 30 previously operated to the closed state and maintains the roof 30 in the closed state. Specifically, when the staircase 40 is operated to the closed state after the roof 30 is operated to the closed state, the lower portion of the staircase 40 overlaps the lower portion of the roof 30 and the roof 30 is maintained in the closed state.

  As shown in FIGS. 2 and 3, a gas spring 31 is provided between the roof 30 and the back panel 6 a of the loading platform 3. Specifically, a gas spring 31 is provided between one side of the roof 30 and one inner side surface 10 a of the opening 10. More specifically, one end of the gas spring 31 is rotatably fixed to one side of the roof 30, and the other end of the gas spring 31 is rotatably fixed to the inner side surface 10a. The gas spring 31 assists the operator in rotating the roof 30 from the closed state shown in FIG. 3 to the open state shown in FIG. That is, when the roof 30 is rotated to a certain extent, the roof 30 can be rotated with a small force or automatically by the biasing of the gas spring 31 thereafter.

  As shown in FIG. 2B, a string 32 is attached to the lower portion of the roof 30. The operator can grasp the string 32 and rotate the roof 30 from the open state shown in FIG. 2 to the closed state shown in FIG. 3 against the bias of the gas spring 31. Of course, the operator can also turn the roof 30 from the open state to the closed state by placing a hand on the roof 30.

  As shown in FIG. 3A, a guide rod 33 that guides the rotation of the roof 30 is provided between the other side of the roof 30 and the other inner side surface 10 b of the opening 10. One end of the guide rod 33 is rotatably fixed to the roof 30, and the other end thereof is rotatably fixed to the inner side surface 10 b of the opening 10.

  As shown in FIGS. 2 and 3, the staircase 40 is rotatably attached to the rear frame 12 of the cargo bed 3 to which the back panel 6a is fixed. As shown in FIGS. 2 (a) and 3 (a), the rear frame 12 has a rectangular frame shape (b) of an upper frame 12a, a lower frame 12b, and two side frames 12c and 12d. The staircase 40 is rotatably attached to the lower frame 12b.

  Specifically, the staircase 40 includes a bracket 41 rotatably attached to the lower frame 12b, a pair of side plates 42a and 42b fixed to the bracket 41 and facing each other, and a pair of side plates 42a and 42b. And a plurality of tread plates 43 that are stretched. In this embodiment, three tread plates 43 are provided, and each tread plate 43 is a sheet metal that is bent as necessary, and has an uneven surface for preventing slippage.

  As shown in FIG. 4, a plurality of support plates 13 are fixed to the lower frame 12 b by bolts, and support shafts 14 are spanned around these support plates 13. Specifically, the support shaft 14 is inserted through a through hole formed in each support plate 13. Although only two support plates 13 are shown in FIG. 4, in reality, four support plates 13 are provided in a row, and the support shaft 14 skews these four support plates 13. (See FIG. 2 (a) and FIG. 3 (a)). Furthermore, one end portion of the support shaft 14 penetrates the support plate 13 on one end side in the arrangement direction and protrudes out of the support plate 13, and the other end portion of the support shaft 14 is supported on the other end side in the arrangement direction. It passes through the plate 13 and protrudes out of the support plate 13. The two support plates 13 shown in FIG. 4 are support plates 13 located at both ends in the arrangement direction.

  The bracket 41 of the staircase 40 is formed with a right connecting portion and a left connecting portion facing each other, and an insertion hole through which the protruding end portion of the support shaft 14 can be inserted is formed in each connecting portion. Then, one protruding end portion of the support shaft 14 protruding from the support plate 13 is inserted into the right connection portion of the bracket 41, and the other of the support shaft 14 protruding from the support plate 13 is inserted into the left connection portion of the bracket 41. The protruding end of is inserted. That is, the staircase 40 including the bracket 41 can rotate about the support shaft 14 as a rotation axis. Specifically, the staircase 40 is rotated about the support shaft 14 as a rotation axis to shift from the open state shown in FIG. 2 to the closed state shown in FIG. 3, and from the closed state shown in FIG. Transition to the open state shown in FIG.

  As shown in FIG. 4, the bracket 41 is provided with a contact portion 41 a that contacts the side surface 20 a of the rear bumper 20 when the staircase 40 is operated in the open state. In other words, when the rotation angle of the staircase 40 reaches a predetermined angle, the contact portion 41a contacts the side surface 20a of the rear bumper 20, and further rotation of the staircase 40 is restricted. Here, the predetermined angle is set to an angle at which the tread plate 43 of the staircase 40 is parallel or substantially parallel to the floor plate 4 (FIG. 1) of the loading platform 3.

  The height of the staircase 40 is set such that the lower end of the staircase 40 in the open state (the lower ends of the side plates 42a and 42b) is not in contact with the ground in principle. Here, “in principle” is described when there is a large unevenness on the ground, or when the ground pressure of the van type truck 1 is significantly lower than the prescribed height due to insufficient tire air pressure. This is to exclude exceptional cases.

  As described above, when the staircase 40 is in the open state, the lower end thereof does not contact the ground in principle. Accordingly, the weight of the staircase 40 in the open state and the load applied to the staircase 40 are supported exclusively by the rear bumper 20. In other words, in the present embodiment, the rear bumper 20 is positioned below the staircase 40 that has been operated in the open state, and functions as a support portion that contacts the staircase 40 and supports the staircase 40. In addition, the rubber | gum rubber | gum which intervenes between the applicable contact part 41a and the side surface 20a of the rear bumper 20 and functions as a shock absorbing material is attached to the contact part 41a.

  As shown in FIGS. 2B and 3B, a hydraulic cylinder 50, which is a drive source for rotating the staircase 40 as described above, is installed on the bottom of the cargo bed 3. The rear end of the cylinder tube 51 of the hydraulic cylinder 50 is rotatably connected to the chassis, and the tip of the piston rod 52 is connected to the bracket 41 of the staircase 40 via the connecting arm 53. Specifically, the tip of the piston rod 52 is rotatably connected to the other end of a connecting arm 53 whose one end is connected to the bracket 41.

  As shown in FIGS. 2A and 3A, an operation unit 60 for operating the hydraulic cylinder 50 is provided at the lower back of the loading platform 3. The operation unit 60 is provided with two switches (a first switch and a second switch). In the following description, the first switch is referred to as an “open switch” and the second switch is referred to as a “closed switch”, but such designation is merely a designation for convenience of explanation.

  In the present embodiment, when the open switch of the operation unit 60 is pressed, the piston rod 52 of the hydraulic cylinder 50 is pulled into the cylinder tube 51, and when the close switch is pressed, the piston rod 52 of the hydraulic cylinder 50 is removed from the cylinder tube 51. Extruded. Therefore, when the close switch is pushed in the state shown in FIG. 2 (open state), the piston rod 52 is pushed out of the cylinder tube 51, and the staircase 40 rotates upward. That is, the staircase 40 shown in FIG. 2 (b) rotates clockwise in the figure, and shifts to the closed state shown in FIG. 3 (b). On the other hand, when the open switch is pushed in the state shown in FIG. 3 (closed state), the piston rod 52 is drawn into the cylinder tube 51, and the staircase 40 rotates downward. That is, the staircase 40 shown in FIG. 3B rotates counterclockwise in the drawing, and shifts to the open state shown in FIG.

  As shown in FIG. 2A, a limit switch 70 is installed in the vicinity of the opening 10 of the back panel 6a. When the staircase 40 is in the closed state shown in FIG. 3, the limit switch 70 is pushed by the staircase 40. Then, even if the closing switch of the operation unit 60 is pressed, the operation of the hydraulic cylinder 50 is forcibly stopped, and an overload of the hydraulic cylinder 50 is avoided.

  As shown in FIG. 4, the side plate 42 a of the staircase 40 is provided with a locking plate 80 in which a notch is formed. On the other hand, as shown in FIGS. 2 (a) and 3 (a), a locking hook 81 and a locking hook 81 can be locked and unlocked near the opening 10 of the back panel 6a. And a latch 82 with a handle.

  As shown in FIG. 3A, when the staircase 40 is in the closed state, the locking hook 81 fits inside the notch of the locking plate 80. In this state, when the latch 82 is hooked on the latch hook 81 and the handle is tilted, the latch 82 is pressed against the latch hook 81 and the latch plate 80 is interposed between the latch 82 and the base of the latch hook 81. Sandwiched between. That is, the staircase 40 is fixed in the closed state.

  As described above, on the back surface 6 of the loading platform 3 of the van type truck 1 according to the present embodiment, the opening 10 serving as the entrance / exit, the roof 30 capable of opening and closing a part of the opening 10, and the opening 10 And a staircase 40 capable of opening and closing a part thereof. The roof 30 and the staircase 40 can close the entire opening 10. The opened roof 30 functions as an awning or a rain shield, and the opened staircase 40 facilitates access to the inside of the loading platform.

  Furthermore, the opened staircase 40 is supported by the rear bumper 20 as a support portion without contacting the ground. Therefore, the stairs 40 are supported in a stable state even when the ground is not flat or the ground is inclined. That is, the staircase 40 is always supported in a stable state.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, although the vehicle according to the above-described embodiment is a dry car, the vehicle of the present invention includes other types of van type trucks such as a cold insulation van and a freezing van. In addition to a van-type truck for carrying goods, a van-type truck in which various devices according to the application are installed inside the loading platform is also included. For example, a van type truck used as a mobile relay vehicle with communication equipment mounted inside the cargo bed, and a van type truck used as an earthquake experience car with the cargo bed mounted on the chassis via a seismic device are also included.

  Further, the vehicle of the present invention includes a connected vehicle including a towed vehicle (tractor) and a cargo bed (trailer) connected to and integrated with the towed vehicle. In such a connected vehicle, wheels, a connecting device, and the like are added to the loading platform.

  In addition, in the loading platform included in the vehicle of the present invention, part or all of the panel material forming the loading platform is expanded, or part or all of the panel material slides to change the length and width of the loading platform. A loading platform is also included.

  In the above-described embodiment, a hydraulic cylinder is used as a staircase drive source. However, the drive source can be replaced with various actuators other than the hydraulic cylinder, and can be replaced with, for example, a pneumatic cylinder or an electric motor.

  In the above embodiment, only the limit switch that operates when the staircase is closed is provided, but in addition to this limit switch or in place of this limit switch, when the staircase is open. It is also possible to provide a limit switch that operates at the same time.

  In the above embodiment, the upper half of the opening provided on the back surface of the loading platform is opened and closed by the roof, and the lower half is opened and closed by the stairs. However, the ratio of the portion opened and closed by the roof and the portion opened and closed by the stairs among the openings can be arbitrarily changed.

  In the above embodiment, the rear bumper functions as a support portion, but a support portion can be provided separately from the rear bumper.

DESCRIPTION OF SYMBOLS 1 Van type truck 2 Driver's cab 3 Car bed 4 Floor board 5 Front surface 5a Front panel 6 Back surface 6a Rear panel 7 Right side surface 7a Right side panel 8 Left side surface 8a Left side panel 9 Ceiling 9a Ceiling panel 10 Openings 10a and 10b Inner side surface 11 Sliding door 12 rear frame 12a upper frame 12b lower frame 12c, 12d side frame 13 support plate 14 support shaft 20 rear bumper 20a side surface 20b upper surface 30 roof 31 gas spring 32 string 33 guide rod 40 step 41 bracket 41a contact portion 42a side plate 43 tread plate 50 Hydraulic cylinder 51 Cylinder tube 52 Piston rod 53 Connecting arm 60 Operation unit 70 Limit switch 80 Locking plate 81 Locking hook 82 Latch

Claims (7)

A vehicle with a loading platform with stairs,
An opening provided on the back surface of the cargo bed;
A roof that is pivotally provided at the upper part of the back surface of the cargo bed, and is operated in a closed state that covers a part of the opening and an open state that opens the part of the opening;
A staircase that is rotatably provided at a lower portion of the back surface of the loading platform and is operated in a closed state that covers the other part of the opening and an open state that opens the other part of the opening. When,
A support portion for supporting the stairs operated in an open state,
The staircase operated in the closed state overlaps with the roof operated in the closed state and maintains the roof in the closed state,
The support portion is located below the stairs operated in an open state, and supports the stairs in contact with the stairs.
vehicle. The vehicle according to claim 1,
The staircase includes a bracket rotatably attached to a rear frame of the cargo bed,
A pair of side plates fixed to the bracket and facing each other;
A plurality of treads spanned between the pair of side plates,
vehicle. The vehicle according to claim 2, wherein
The bracket is provided with a contact portion that contacts the support portion when the staircase is operated in an open state.
vehicle. In the vehicle according to any one of claims 1 to 3,
A vehicle in which a rear bumper functions as the support portion. In the vehicle according to any one of claims 1 to 4,
The staircase is rotated from the closed state to the open state, or the staircase is rotated from the open state to the closed state.
vehicle. The vehicle according to claim 5, wherein
A vehicle, wherein the drive source is a hydraulic cylinder. In the vehicle according to any one of claims 1 to 6,
A vehicle having a gas spring that assists in turning the roof from a closed state to an open state.

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