JP2011201430A - Door opening/closing device of loading space for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door opening/closing device of loading space for vehicle preventing the opening/closing of a door from having any effect on the ceiling of the loading space.SOLUTION: A door installation frame 81 is disposed in the vehicle fore-and-aft direction on the upper side of the side portion of the loading space. A pair of guide rails 70 are disposed in the vertical direction below the door installation frame 81. The door 60 is constituted with an upper door 61 and a lower door 62. The lower end of the upper door 61 and the upper end of the lower door 62 are connected by a door rotating member 78. The upper end of the upper door 61 is attached to the door installation frame 81 via a body rotating member 79. An arm 73 is provided on the lower end on the reverse surface side of the lower door 62. The end portion of the arm 73 has a roller 73a sliding along the guide rail 70. An opening/closing driving source 75 moving back and forth is provided below the door installation frame 81 and the vehicle inside of the guide rail 70. The movable end of the opening/closing driving source 75 is attached to the reverse surface of the upper door 61 via a rotation fulcrum 77a.

Description

  The present invention relates to a door opening / closing device for a vehicle carrier used particularly for special vehicles such as fire engines.

2. Description of the Related Art Conventionally, in a vehicle having a loading platform at the rear part of a vehicle and the top surface, side surface, and rear surface of the loading platform are covered with a member such as a panel, an opening / closing device that opens the side surface including the top surface has been proposed ( Patent Document 1 and Patent Document 2).
On the other hand, Patent Document 3 proposes a configuration in which the door on the side surface of the loading platform is folded in half and opened, and the lower portion of the door extends along the rail.
Moreover, in patent document 4, although it is the opening / closing door of the rear surface of a loading platform, the door structure which is folded in half is proposed in the open state.

JP 2002-347442 A JP 2003-226140 A JP-A-8-239060 JP 2004-1768 A

As can be seen from each patent document, in the door that opens the side of the loading platform of the vehicle, the top, including the top surface, is opened, and the top surface can be used as a place for placing equipment or work. Can not.
On the other hand, it is conceivable to arrange the rear opening / closing door proposed in Patent Document 4 on the side surface of the loading platform. However, in Patent Document 4, a lifting force generating mechanism is provided near the hinge of the door. Because of the structure of flipping up as a rotating shaft, a large driving force is required and the door must be able to withstand this load.

Therefore, the present invention can secure a place for placing equipment on the top surface while securing a large opening surface, and for a vehicle in which the lower end of the two-fold door does not jump out of the vehicle in order to prevent danger to the operator. An object of the present invention is to provide a door opening / closing device for a cargo bed.
It is another object of the present invention to provide a door opening / closing device for a vehicle loading platform that can incorporate lighting in a door and ensure lighting at a carry-out place when carrying out materials and equipment.

The door opening / closing device for a vehicle loading platform according to claim 1 has a loading platform at the rear of the vehicle, the top and side surfaces of the loading platform are covered by a panel, and the loading platform is opened and closed by the door. The door opening and closing device includes a door mounting bar disposed in the vehicle front-rear direction above the side of the loading platform, and a pair of guide rails disposed vertically below the door mounting bar. Is composed of an upper door and a lower door, the lower end of the upper door and the upper end of the lower door are connected by a door rotating member, and the upper end of the upper door is connected to the door mounting bar via a main body rotating member. An arm is provided at the lower end on the back side of the lower door, and the end of the arm has a roller that slides along the guide rail. An open / close drive source for reciprocating operation is provided inside the vehicle, and the movable end of the open / close drive source Characterized in that attached via a pivot point on the back surface of the upper door.
According to a second aspect of the present invention, in the door opening and closing device for a vehicle loading platform according to the first aspect, a rail inclined portion is provided at a lower end portion of the guide rail, with a lower portion positioned inward of the vehicle with respect to the upper portion. An inclination direction of the rail inclined portion is made to correspond to an operation direction of the opening / closing drive source from a closed state of the door to a predetermined operation.
According to a third aspect of the present invention, in the door opening / closing device for a vehicle carrier according to the first or second aspect, the rod side end of the cylinder constituting the opening / closing drive source is rotated with respect to the door mounting bar. It is provided freely.
According to a fourth aspect of the present invention, in the door opening / closing device for a vehicle carrier according to any one of the first to third aspects, the upper door includes a first panel surface including a lower end of the upper door; The first panel surface and a second panel surface that is continuous, the inclination angle of the second panel surface with respect to the vertical direction is larger than the first panel surface, and the movable end of the open / close drive source is the second panel It is provided on the surface.
According to a fifth aspect of the present invention, in the door opening / closing device for a cargo bed according to any one of the first to fourth aspects, the arm portion is located with respect to the door rotating member when the door is closed. The attachment position to the lower door and the attachment position of the movable end of the opening / closing drive source to the second panel surface are defined as the inside of the vehicle.
According to a sixth aspect of the present invention, in the door opening / closing device for a vehicle carrier according to any one of the first to fifth aspects, the lower door is provided with an illuminating means having an outer side of the vehicle as an optical axis. It is characterized by.
According to a seventh aspect of the present invention, in the vehicle door opening / closing device according to the sixth aspect, the optical axis of the illumination means is directed downward from the horizontal.
According to an eighth aspect of the present invention, in the door opening / closing device for a vehicle carrier according to the sixth or seventh aspect, an illuminance sensor that detects brightness and a door sensor that detects the open / closed state of the door are provided. The illumination means is turned on when a predetermined darkness is detected by the illuminance sensor and the door sensor detects an open state.
According to a ninth aspect of the present invention, there is provided the door opening / closing device for a vehicle carrier according to the third aspect, wherein a pair of first side mounting bars arranged in a vertical direction of the door mounting bar, and the first side parts. A pair of second side mounting bars arranged outside the vehicle of the mounting bar, the cylinder is provided on the first side mounting bar, and the guide rail is mounted on the first side mounting bar and the second side. It is arranged between the side mounting bars.
According to a tenth aspect of the present invention, in the vehicle carrier door opening and closing device according to any one of the first to ninth aspects, the lower door is made of fiber-reinforced plastic, Aggregate is joined, the arm part is connected by the aggregate, and the other end of the auxiliary member whose one end is connected to the arm part is connected to the aggregate.

According to the door opening and closing device for a vehicle loading platform of the present invention, by providing the door on the door mounting bar arranged above the side of the loading platform, the top surface of the loading platform is not affected by the opening and closing of the loading platform. Can be used as a place to place equipment or work, and the lower end of the lower door is guided along the guide rail via the arm, so the lower end of the door does not jump out of the vehicle, The door can be opened and closed stably by the reciprocal movement of the.
In addition, according to the door opening / closing device for a vehicle cargo bed according to the present invention, the opening operation in the initial stage of the door can be performed stably.

1 is an external perspective view of a vehicle provided with a door opening / closing device for a vehicle carrier according to an embodiment of the present invention. External perspective view of the vehicle from the rear Top view of the vehicle with the top panel removed Front view of the door according to this embodiment Back view of the door Perspective view of main part of door opening / closing device of loading platform for vehicle. Front view of the main part of the door opening and closing device of the cargo bed for the vehicle Rear view of the main part of the door opening and closing device Perspective view of the main part showing the framework used in the door opening and closing device Side view showing the door closed state in the door opening and closing device of the vehicle loading platform Side view showing the initial state of door opening operation in the door opening and closing device Side view showing the late state of the door opening operation in the door opening and closing device Side view showing the door open state in the door opening and closing device Side view showing the rear of the vehicle to which the door opening / closing device for the vehicle carrier is applied

The door opening / closing device for a vehicle cargo bed according to the first embodiment of the present invention has a door mounting bar disposed in the vehicle front-rear direction above the side of the cargo bed, and a pair of guide rails below the door mounting bar. Are arranged in a vertical direction, the door is composed of an upper door and a lower door, the lower end of the upper door and the upper end of the lower door are connected by a door rotating member, and the upper end of the upper door is connected via a main body rotating member It is attached to the door mounting bar, and an arm is provided at the lower end on the back side of the lower door. The arm part has a roller that slides along the guide rail. An opening / closing drive source that performs a reciprocating operation is provided inside the vehicle, and a movable end of the opening / closing drive source is attached to the back surface of the upper door via a rotation fulcrum. According to the present embodiment, the top surface of the loading platform is not affected by the opening and closing of the door by providing the door on the door mounting bar disposed above the side of the loading platform. It can be used as a place or work place. In addition, according to the present embodiment, the lower part of the lower door is guided along the guide rail through the arm portion, so that the lower end of the door does not jump out of the vehicle, so that the safety is high and the opening / closing drive is performed. The door can be opened and closed stably by the reciprocation of the source.
According to a second embodiment of the present invention, in the door opening / closing device for a vehicle carrier according to the first embodiment, a rail inclined portion having a lower portion positioned inward of the vehicle with respect to an upper portion is provided at a lower end portion of the guide rail. And the inclination direction of the rail inclined portion is made to correspond to the operation direction of the opening / closing drive source from the door closed state to the predetermined operation. According to this Embodiment, the opening operation in the initial stage of a door can be performed stably.
According to a third embodiment of the present invention, in the door opening / closing device for a vehicle loading platform according to the first or second embodiment, the rod side end of the cylinder constituting the opening / closing drive source is rotated with respect to the door mounting bar. It is provided freely. According to the present embodiment, the rotation angle of the movable end of the opening / closing drive source can be reduced compared to the case where the end opposite to the cylinder rod is provided on the door mounting bar, and the opening / closing drive source in a narrow space can be reduced. Installation is possible.
According to a fourth embodiment of the present invention, in the door opening and closing device for a vehicle carrier according to the first to third embodiments, the upper door includes a first panel surface including a lower end of the upper door, and a first panel surface. And a continuous second panel surface, the inclination angle of the second panel surface with respect to the vertical direction is larger than that of the first panel surface, and the movable end of the open / close drive source is provided on the second panel surface. According to the present embodiment, the load direction to the door can be directed upward, which is the opening direction, and thus the opening operation in the initial stage of the door can be performed stably.
According to a fifth embodiment of the present invention, in the door opening and closing device for a vehicle carrier according to the first to fourth embodiments, when the door is closed, the door turns to the lower door of the arm portion. And the mounting position of the movable end of the opening / closing drive source on the second panel surface are the inside of the vehicle. According to the present embodiment, since the door rotation member is located outside the vehicle, the opening operation at the initial stage of the door can be performed stably.
According to a sixth embodiment of the present invention, in the door opening / closing device for a vehicle carrier according to the first to fifth embodiments, an illuminating unit having an optical axis on the outer side of the vehicle is provided on the lower door. . According to the present embodiment, not only the door is closed but also the door is opened, the vehicle periphery can be illuminated by the illumination means.
According to a seventh embodiment of the present invention, in the door opening / closing device for a vehicle carrier according to the sixth embodiment, the optical axis of the illumination means is directed downward from the horizontal. According to this embodiment, not only when the door is closed, but also when the door is opened, the area around the loading platform can be illuminated, so that loading and unloading work of materials and equipment at night becomes easy.
According to an eighth embodiment of the present invention, in the door opening / closing device for a vehicle cargo bed according to the sixth or seventh embodiment, an illuminance sensor that detects brightness and a door sensor that detects an open / closed state of the door are provided. The illumination means is turned on when a predetermined darkness is detected by the illuminance sensor and the door is detected to be open by the door sensor. According to the present embodiment, it is possible to illuminate the side of the loading platform of the vehicle when the door is open.
A ninth embodiment of the present invention is a vehicle carrier door opening and closing device according to the third embodiment, wherein a pair of first side mounting bars arranged in the vertical direction of the door mounting bars, and the first side And a pair of second side mounting bars disposed outside the vehicle of the part mounting bars, the cylinder is provided on the first side mounting bars, and the guide rails are provided on the first side mounting bars and the second side mounting bars. Between the two. According to the present embodiment, by arranging the guide rail inside the vehicle from the second side mounting bar, the guide rail having a large load fluctuation can be reliably held and stabilized, and the vertical position of the door mounting bar Shaking of the door can be reduced by providing a cylinder in the first side mounting bar disposed inward of the second side mounting bar in the direction.
According to a tenth embodiment of the present invention, in the door opening and closing device for a vehicle carrier according to the first to ninth embodiments, the lower door is made of fiber reinforced plastic, and the aggregate is formed on the outer periphery of the back surface of the lower door. It is joined, the arm part is connected with the aggregate, and the other end of the auxiliary member whose one end is connected to the arm part is connected to the aggregate. According to the present embodiment, it is possible to sufficiently withstand the load applied during the opening / closing operation applied to the lower door, and the door can be made of fiber-reinforced plastic.

Hereinafter, a door opening / closing device for a vehicle carrier according to an embodiment of the present invention will be described.
1 is an external perspective view of a vehicle equipped with a door opening / closing device for a vehicle loading platform according to the present embodiment, FIG. 2 is an external perspective view of the vehicle from the rear, and FIG. 3 is a top panel of the vehicle removed. It is a top view of a state.
The overall configuration of the vehicle according to this embodiment will be described with reference to FIGS.
In this embodiment, a door opening / closing device for a vehicle cargo bed by a fire engine for a forest fire is shown.
The forest fire engine according to the present embodiment includes a cabin space 10 having a driver's seat, an operation deck space 20 capable of performing external communication and performing a fire fighting operation, and a cargo bed space 50 in which fire fighting materials and equipment are mounted. .
The vehicle body includes a vehicle front body 1 that forms a cabin space 10 and an operation deck space 20, and a vehicle rear body 2 that forms a cargo bed space 50.
A cabin space 10 is arranged in front of the vehicle front body 1, and an operation deck space 20 is arranged behind the vehicle front body 1.
An opening 21 is formed on both sides of the operation deck space 20 in the vehicle, and a safety bar 22 is rotatably provided in the opening 21. The safety bar 22 is provided with a water spray gun 23.

As shown in FIG. 3, a water tank 51 and a water discharge unit 52 are arranged in the center of the loading space 50. The water tank 51 stores fire extinguishing water, and the water discharge unit 52 is provided with a pump, a compressor, and a foam medicine. The water tank 51 is disposed in front of the loading space 50 and the water discharge unit 52 is disposed behind the loading space 50.
In the space between the water tank 51 and the door 60 and the space between the water discharge unit 52 and the door 60, an elevating shelf 53 for storing materials and equipment is arranged.
The loading space 50 is covered with panels on the top surface, side surfaces, and rear surface, and the side surfaces are opened and closed by doors 60.
On both side surfaces of the vehicle rear body 2, there are provided operation portions 65 a for controlling the respective doors 60 and the illumination means 65 provided on the respective doors 60. The operation unit 65a is provided with an operation button for instructing an opening / closing operation of the door 60, and an operation button for instructing manual on / off or automatic on / off of the illumination unit 65. In addition, an operation button for instructing the operation of the lifting shelf 53 and an emergency button for outputting an emergency warning to workers in the cabin space 10 or the operation deck space 20 may be provided on the operation unit 65a.

FIG. 4 is a front view of the door according to the present embodiment, and FIG. 5 is a rear view of the door.
The door 60 according to this embodiment includes an upper door 61 and a lower door 62. The upper door 61 and the lower door 62 are formed of fiber reinforced plastic (FRP). The upper door 61 and the lower door 62 have substantially the same height direction dimensions and the same width direction dimensions, and the upper door 61 and the lower door 62 have substantially the same size. An opening 63 is formed in the upper door 61, and glass or a translucent heat-resistant plastic is fitted in the opening 63. An opening 64 is formed in the lower door 62, and the opening 64 is fitted with glass or translucent heat-resistant plastic. Illumination means 65 is provided in a part of the opening 64.

As shown in FIG. 5, the aggregate 66 is joined to the back surface of the upper door 61, and the aggregate 67 is joined to the back surface of the lower door 62.
The aggregate 66 includes a pair of vertical aggregates 66a and a pair of horizontal aggregates 66b. A pair of vertical aggregates 66a and a pair of horizontal aggregates 66b surround the outer periphery of the upper door 61. Further, the aggregate 66 further includes diagonal aggregates 66c and 66d, a horizontal middle aggregate 66e, and a vertical middle aggregate 66f. The diagonal aggregate 66c connects the vertical aggregate 66a on the front side of the vehicle and the horizontal aggregate 66b on the lower end side. The diagonal direction aggregate 66d connects the vertical direction aggregate 66a on the vehicle rear side and the horizontal direction middle aggregate 66e. The horizontal middle aggregate 66e is disposed between the first panel surface 61a and the second panel surface 61b constituting the upper door 61. The vertical middle aggregate 66f connects the horizontal aggregate 66b on the upper end side and the horizontal middle aggregate 66e at respective intermediate positions.

On the other hand, the aggregate 67 includes a pair of vertical aggregates 67a and a pair of horizontal aggregates 67b. The pair of vertical aggregates 67 a and the pair of horizontal aggregates 67 b surround the outer periphery of the lower door 62. Further, the aggregate 67 further includes diagonal direction aggregates 67c and 67d. The diagonal aggregate 67c connects the vertical aggregate 67a on the front side of the vehicle and the horizontal aggregate 67b on the upper end side. The oblique direction aggregate 67d connects the vertical direction aggregate 67a on the vehicle rear side and the horizontal direction aggregate 67b on the lower end side.
The horizontal aggregate 66b on the upper end side is provided with a plurality of main body rotating member attaching portions 68. A plurality of door rotation member attachment portions 69 are provided on the horizontal aggregate 66b on the lower end side and the horizontal aggregate 67b on the upper end side.

FIG. 6 is a perspective view of a main part of a door opening / closing device for a vehicle carrier according to the present embodiment.
In FIG. 6, the door 60 and the guide rail 70 are shown.
The pair of guide rails 70 includes a rail vertical portion 71 that is formed in a straight line and arranged in the vertical direction, and a rail inclined portion 72 that is arranged at the lower end of the rail vertical portion 71. The rail inclined portion 72 is inclined with respect to the rail vertical portion 71 so that the lower portion is positioned inside the vehicle with respect to the upper portion.
Arm portions 73 are provided at both lower ends on the back side of the lower door 62. One end of the arm portion 73 is vertically connected to the vertical aggregate 67a, and the other end of the arm portion 73 is slidably attached to the guide rail 70 via the roller 73a. One end of the auxiliary member 74 is connected to the vertical direction aggregate 67 a, and the other end of the auxiliary member 74 is connected to the arm portion 73.

FIG. 7 is a front view of the main part of the door opening / closing device of the vehicle carrier according to the present embodiment, FIG. 8 is a rear view of the main part of the door opening / closing device, and FIG. 9 is a perspective view of the main part showing the framework used in the door opening / closing device. is there.
7 and 8 show a state in which the door 60 is attached to the frame 80 placed in the loading space 50. FIG. 7 is a view from the outside of the vehicle, and FIG. 8 is a view from the inside of the vehicle. It is.
As shown in FIGS. 7 and 8, the door 60 is disposed between the upper surface beam 80 a and the lower surface beam 80 b constituting the framework 80, and is disposed between the pair of first side portion mounting beams 82. The pair of guide rails 70 are disposed along the opposing surfaces of the pair of first side mounting bars 82. The pair of first side mounting bars 82 is provided with an opening / closing drive source 75 for opening / closing the door 60.
As shown in FIG. 9, the framework 80 includes a plurality of bars between an upper surface beam 80a and a lower surface beam 80b. A top panel is disposed on the upper surface bar 80a. The bottom bar 80 b is placed on the loading platform base of the loading platform space 50. The door mounting bar 81 is located above the side of the cargo bed and is arranged in the vehicle front-rear direction. In the present embodiment, the height is the same as that of the top bar 80a, but may be lower than the top bar 80a.
A pair of first side attachment bars 82 are disposed on both side surfaces of the framework 80. The pair of first side mounting bars 82 are arranged in the vertical direction of the door mounting bar 81, and the first side mounting bars 82 and the door mounting bar 81 are arranged in the same plane. The pair of second side mounting bars 83 are disposed outside the vehicle of the first side mounting bars 82.

10 to 13 are side views showing a door opening / closing state in the door opening / closing device of the vehicle carrier according to this embodiment.
10 is a side view showing a door closing state in the door opening and closing device, FIG. 11 is a side view showing an initial state of a door opening operation in the door opening and closing device, and FIG. 12 is a side view showing a late state of the door opening operation in the door opening and closing device. FIG. 13 is a side view showing a door open state in the door opening and closing device.
In the figure, the opening / closing drive source 75 is provided below the door mounting bar 81 and inside the guide rail 70. The opening / closing drive source 75 includes a rod 77 at one end of the cylinder 76, and reciprocates the rod 77 with respect to the cylinder 76 by injecting and discharging gas or liquid from the other end of the cylinder 76. An electric pump is used for injecting and discharging gas or liquid. In addition to the hydraulic drive and pneumatic drive by the electric pump, a mechanism for reciprocating the rod 77 by converting the rotation of the motor into a linear motion may be used.
The movable end of the rod 77 constituting the opening / closing drive source 75 is attached to the back surface of the upper door 61 via a rotation fulcrum 77a. Here, the upper door 61 is composed of a first panel surface 61a including the lower end of the upper door 61 and a second panel surface 61b continuous with the first panel surface 61a, and the movable end of the rod 77 is pivoted. It is attached to a vertical aggregate 66a located on the second panel surface 61b by a member 77b having a fulcrum 77a. The cylinder 77 is provided on the first side mounting bar 82 at the rod side end portion via a rotation fulcrum 76a.
The door rotation member 78 connects the lower end of the upper door 61 and the upper end of the lower door 62 using the door rotation member mounting portion 69.
The main body rotation member 79 uses the main body rotation member attachment portion 68 to attach the upper end of the upper door 61 to the door attachment bar 81.

As shown in FIG. 10, the inclination angle b with respect to the vertical direction of the second panel surface 61b is larger than the inclination angle a with respect to the vertical direction of the first panel surface 61a. As described above, the inclination angle with respect to the vertical direction of the second panel surface 61b is made larger than that of the first panel surface 61a, and the movable end of the opening / closing drive source 75 is provided on the second panel surface 61b. Can be directed upward in the opening direction, so that the opening operation of the door 60 in the initial stage can be performed stably.
As shown in FIG. 10, when the door 60 is closed, the attachment position X of the arm 73 to the lower door 62 and the attachment position Y of the movable end of the open / close drive source 75 to the second panel surface 61b are the door. The inside of the vehicle is more than the rotating member 78. Thus, the attachment position X of the arm portion 73 to the lower door 62 and the attachment position Y of the movable end of the opening / closing drive source 75 to the second panel surface 61 b are set inward of the vehicle relative to the door rotation member 78. Thus, the opening operation in the initial stage of the door can be performed stably.
Further, as shown by a two-dot broken line in FIG. 10, the inclination direction of the rail inclined portion 72 corresponds to the operation direction of the opening / closing drive source 75 from the closed state of the door 60 to the predetermined operation, thereby The opening operation can be performed stably.

Hereinafter, the opening operation of the door 60 will be described.
By driving the opening / closing drive source 75 from the state shown in FIG. 10, the rod 77 presses the second panel surface 61b, and the upper door 61 moves obliquely upward. With the operation of the upper door 61, the door rotation member 78 moves obliquely upward with rotation. In conjunction with this operation, the roller 73a moves on the rail inclined portion 72.
Further, by continuing to drive the opening / closing drive source 75, as shown in FIGS. 11 and 12, the roller 73a moves from the rail inclined portion 72 to the rail vertical portion 71 and ascends the rail vertical portion 71. As the roller 73a moves up the rail vertical portion 71, the rotation angles of the door rotation member 78 and the main body rotation member 79 also increase. On the other hand, the opening / closing drive source 75 also rotates in the direction in which the rod 77 side moves upward about the rotation fulcrum 76a.
As shown in FIG. 13, when the roller 73a reaches the upper end of the rail vertical portion 71, the opening operation of the door 60 ends. At the end of the opening operation, the position of the roller 73a is detected by a limit switch. The end of the opening operation may be a door sensor that detects the open / closed state of the door by a method other than the limit switch.

The closing operation of the door 60 is performed by shifting from the state of FIG. 13 to the state of FIG. 10 through the steps of FIGS.
By driving the opening / closing drive source 75 in the reverse direction from the state shown in FIG. 13, the rod 77 pulls the second panel surface 61b, and the upper door 61 moves obliquely downward. Along with the operation of the upper door 61, the door rotation member 78 moves obliquely downward with rotation. In conjunction with this operation, the roller 73a descends the rail vertical portion 71.
Further, by continuing to drive the opening / closing drive source 75, the roller 73a further descends the rail vertical portion 71 as shown in FIGS. As the roller 73a descends the rail vertical portion 71, the door rotation member 78 and the main body rotation member 79 rotate. On the other hand, the opening / closing drive source 75 also rotates in the direction in which the rod 77 side moves downward about the rotation fulcrum 76a.
When the roller 73a moves from the rail vertical portion 71 to the rail inclined portion 72 and the roller 73a reaches the lower end of the rail inclined portion 72 as shown in FIG. 10, the closing operation of the door 60 ends. At the end of the closing operation, the position of the roller 73a is detected by a limit switch. The end of the closing operation may be a door sensor that detects the open / closed state of the door by a method other than the limit switch.

FIG. 14 is a side view showing the rear of a vehicle to which the door opening / closing device for a vehicle carrier according to this embodiment is applied.
The door opening / closing device for a vehicle carrier according to the present embodiment includes an illuminance sensor that detects brightness and a door sensor that detects the open / closed state of the door 60, and detects a predetermined darkness by the illuminance sensor. When the door is detected to be open, the illumination means 65 is turned on. Therefore, as shown in the figure, when the door 60 is opened at night, the illumination means 65 is turned on, and the illumination means 65 illuminates the side of the loading platform of the vehicle.
In addition, not only in the state where the door 60 is opened, but also in the state where the door 60 is closed, the periphery of the vehicle can be illuminated by turning on the illumination means 65 by manual operation.
The optical axis of the illumination means 65 is preferably directed downward from the horizontal outside the vehicle. By loading the light axis of the illumination means 65 downward from the horizontal, not only when the door 60 is closed, but also when the door 60 is open, the area around the loading platform can be illuminated so Becomes easy.

In the vehicle of the present embodiment, the elevating shelf 53 is configured to descend from the loading space 50 when the opening operation of the door 60 is completed. In the case of forest fire fire trucks, four-wheel drive or six-wheel drive is often used as the base vehicle, and the loading space 50 is at a high position as shown in the figure because it is necessary to ensure a sufficient minimum ground clearance. . Therefore, in the case of a forest fire fire truck, it is effective that the elevator rack 53 includes an elevator mechanism.
Moreover, when applying to a fire engine, since urgentness is required, it is preferable to start the descent | fall operation | movement of the raising / lowering shelf 53 in the stage in the middle of the opening operation | movement of the door 60. FIG. In this case, the opening operation position of the door 60 that does not affect the lowering operation of the elevating shelf 53 is set in advance, and when the detection means detects that the door 60 has reached this setting position, the operation of the drive source is started. To do. In addition, about a raising / lowering mechanism, since a known mechanism can be applied, description here is abbreviate | omitted.
In the present embodiment, the illumination unit 65 is turned on when the door 60 detects the open state by the door sensor. However, the start of the opening operation of the door 60 is detected, and the open state is started from the start of the opening operation. It is also effective to turn on the illumination means 65 at any timing up to. In particular, when the lowering operation of the elevating shelf 53 is started in the middle of the opening operation of the door 60, it is preferable to turn on the illumination means 65 before the door 60 is opened.
Further, as shown in the figure, since the top surface of the vehicle is not affected by the opening / closing operation of the door 60, the top surface can be used as a place for placing the equipment 54 or a work place, Is guided along the guide rail via the arm portion, the door can be opened and closed stably by the reciprocating motion of the opening and closing drive source.

  The present invention is suitable for a door opening / closing device for a vehicle carrier used in a fire engine, but can be applied to special vehicles such as an ambulance and a camper.

60 Door 61 Upper door 61a First panel surface 61b Second panel surface 62 Lower door 65 Illuminating means 70 Guide rail 72 Rail inclined portion 73a Roller 75 Open / close drive source 77 Rod 81 Door mounting bar 82 First side mounting bar 83 Second Side mounting bar

Claims (10)

A door opening / closing device for a vehicle loading platform having a loading platform at the rear of the vehicle, the top and side surfaces of the loading platform being covered by a panel, and the side surfaces being opened and closed by a door,
Above the side of the loading platform, a door mounting bar is arranged in the vehicle longitudinal direction,
Below the door mounting bar, a pair of guide rails are arranged vertically,
The door is composed of an upper door and a lower door,
The lower end of the upper door and the upper end of the lower door are connected by a door rotating member,
The upper end of the upper door is attached to the door mounting bar via a main body rotation member,
An arm is provided at the lower end on the back side of the lower door,
At the end of the arm portion, there is a roller that slides along the guide rail,
An opening / closing drive source for reciprocating operation is provided below the door mounting bar and inside the guide rail.
A door opening / closing device for a vehicle carrier, wherein a movable end of the opening / closing drive source is attached to a back surface of the upper door via a pivot. The lower end portion of the guide rail is provided with a rail inclined portion whose lower portion is located inside the vehicle with respect to the upper portion,
2. The door opening / closing device for a vehicle carrier according to claim 1, wherein an inclination direction of the rail inclined portion corresponds to an operation direction of the opening / closing drive source from a closed state of the door to a predetermined operation.   The door opening / closing device for a vehicle carrier according to claim 1 or 2, wherein a rod side end portion of a cylinder constituting the opening / closing drive source is provided so as to be rotatable with respect to a door mounting bar.   The upper door is constituted by a first panel surface including a lower end of the upper door and a second panel surface continuous with the first panel surface, and the vertical direction of the second panel surface with respect to the first panel surface. 4. The vehicular door opening / closing device according to claim 1, wherein an inclination angle with respect to is increased and a movable end of the opening / closing drive source is provided on the second panel surface. 5.   In the closed state of the door, with respect to the door rotating member, the attachment position of the arm portion to the lower door and the attachment position of the movable end of the opening / closing drive source to the second panel surface are inward of the vehicle. The door opening / closing device for a vehicle carrier according to any one of claims 1 to 4, wherein   6. The vehicle door opening / closing device according to any one of claims 1 to 5, wherein the lower door is provided with an illuminating means having an outer axis of the vehicle as an optical axis.   7. The door opening / closing device for a vehicle carrier according to claim 6, wherein the optical axis of the illumination means is directed downward from the horizontal.   An illumination sensor that detects brightness; and a door sensor that detects an open / closed state of the door; when the illumination sensor detects a predetermined darkness and the door sensor detects the open state, the illumination The vehicle door opening / closing device according to claim 6 or 7, characterized in that the means is turned on. A pair of first side mounting bars disposed in the vertical direction of the door mounting bar, and a pair of second side mounting bars disposed outside the vehicle of the first side mounting bar,
The vehicle according to claim 3, wherein the cylinder is provided on the first side mounting bar, and the guide rail is disposed between the first side mounting bar and the second side mounting bar. Door opening / closing device for cargo bed.   In addition to the auxiliary member in which the lower door is made of fiber reinforced plastic, aggregate is joined to the outer periphery of the back surface of the lower door, the arm portion is connected by the aggregate, and one end is connected to the arm portion The door opening / closing device for a vehicle carrier according to any one of claims 1 to 9, wherein an end is connected to the aggregate.