JPS6218495Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a cargo box for a vehicle, such as a truck.
Specifically, the present invention relates to a cargo box that is easy to load and unload cargo from the lateral direction of a vehicle, is inexpensive, and is easy to assemble.

BACKGROUND ART Packing boxes made entirely of aluminum and packing boxes made of a canopy have been known.
However, packing boxes made of aluminum have the following problems. (1) Manufacturing costs are high due to high material costs. (2) Since there is usually only one door on the side of the cargo box, it is difficult to load and unload cargo from the side of the vehicle. (3) During assembly, the boxes are assembled by riveting and welding, and then mounted on the chassis, which requires transporting the chassis to the manufacturing site for aluminum cargo boxes, which poses problems in terms of ease of assembly. . (4) The appearance is monotonous and there is little variation. (5) Pallet loading is not possible because the lateral cargo space of the vehicle is small and space is limited.

In addition, the following problems also occur in the case of a packing box made of a canopy. (1) Due to the tilt plate, it is not possible to load or unload cargo from the side of the vehicle. (2) The canopy has poor durability and is easily damaged, especially at the poles, so it must be replaced every two to three years. (3) The appearance is monotonous and there is little variation, and it is not possible to change it by color. (4) Cardboard boxes and the like cannot be loaded without gaps, resulting in wasted space and poor flexibility in cargo contents.

As described above, conventional vehicle cargo boxes have poor workability for loading and unloading loads, especially from the side of the vehicle, are high in cost, and lack ease of mounting, assembly, durability, flexibility of cargo content, and design. They have various problems such as poor sex.

Japanese Patent Publication No. 38-19903 and Japanese Patent Publication No. 22244-1977 are related to cargo boxes or loading platforms for vehicles.

In the former, a roof/floor forming member is supported by a plurality of cylinder devices so as to be able to move up and down, thereby forming the floor of the truck or the roof. However, the vehicle body of this truck requires a special mounting structure such as a cylinder device because it is necessary to firmly and reliably support the roof/floor forming member.

Furthermore, this known example does not at all suggest a packing box in which the sides of the packing box are closed by a combination of a canvas and a door to form a large opening as in the present invention.

On the other hand, the latter relates to improvements in removable side panels for heavy-duty flatbed trucks and trailers, and a structure has been proposed in which the upper ends of the side panels are connected by beams or headers. However, the loading box of this truck does not have a structure in which the sides are closed by a combination of a canvas and a door, and the roof, which is an integral structure, can be easily attached using positioning and mounting bolts. It doesn't belong to.

In addition, a van body equipped with a slideable curtain on at least one side of the cargo box was disclosed in Japanese Patent Laid-Open No.
Although proposed in Publication No. 18525, this conventional vehicle curtain has a structure in which it is simply suspended so that it can slide along a rail attached to the ceiling, so the support of the curtain is not stable. It is difficult to slide smoothly because it gets stuck in the middle when opening and closing.

The present invention relates to an improvement of a cargo box in which a front frame and a rear frame are respectively fixed to the front and rear positions of a floor assembly as a base.

A first object of the present invention is to provide a cargo box that has good workability for loading and unloading loads from the side of the vehicle, and has good mounting and assembly workability. Furthermore, a second object of the present invention is to provide a packing box that can reduce the manufacturing cost of the packing box and has improved installation and assembly workability.

In order to achieve the above object, the present invention provides a guide rail section provided on the upper and lower side frames of the loading box on at least one side of the loading box, in which the front frame and the rear frame are respectively fixed at the front and rear positions of the floor assembly. A canvas and a door provided on at least one of the front and rear sides of the canvas are movably suspended, and holes provided in the upper surfaces of both frames are provided with positioning mountings provided at the front and rear positions of the roof. This is a roof mounting structure for a vehicle cargo box, in which the roof is attached to the cargo box by inserting and fixing bolts.

An embodiment of the present invention will be described below with reference to the drawings.

Figure 1 shows a truck equipped with the packing box of the present invention, in which symbol A is the cab, B is the chassis frame,
C is a packing box.

First, the overall structure of the packing box C will be explained with reference to FIG.

<Logging box> The loading box C includes a floor assembly 1 fixed on two chassis frames B and B provided parallel to each other along the longitudinal direction of the truck C, and a floor assembly 1 mounted on the floor assembly 1. It consists of a rear body assembly 2 (upper part).

<Floor assembly> Floor assembly 1 consists of multiple horizontal joists 13
It is constructed by fixing floor side frames 12, 12 extending in the longitudinal direction of the floor 11 to the left and right sides of the floor 11, which is formed by fixing a plurality of long plate pieces in parallel on the top.

As shown in FIG. 3, the floor side frame 12 has a cross section that is approximately in the shape of a mouth, and the center portion of the upper surface is open along the longitudinal direction, and the edge of the opening is bent inward to form a guide rail. 12a. A bracket 14 is fixed to the front and rear end positions of the floor side frames 12, 12, respectively, so as to partially protrude from the front end of the floor side frames 12, 12 in the front and back direction.

As shown in FIGS. 3, 4, and 16, the floor assembly 1 is fixed onto the chassis frame B via horizontal joists 13 with bolts 15 and nuts 16.

The above floor assembly 1 has floor side frames 12, 12 attached to the floor of a conventional truck.
It is configured by fixing.

<Rear body assembly> The rear body assembly 2 includes a front frame 21, a rear frame 22, and both frames 21, 2.
2, a front door 25, a canvas 24, a rear door 26, and a shutter door 27 provided within the frame of the rear frame 22 (see FIG. 25). (see Figure 29).

The assembly order of the floor assembly 1 of the rear body assembly 2 is as follows. first,
The front frame 21 and the rear frame 22 are temporarily fixed to the bracket 14 of the floor assembly 1 using fixing means using bolts and nuts. Next, the roof assembly 23 (a canvas 24 is previously suspended from its side frame 42 as described later) is assembled onto both frames 21 and 22 by fixing means using bolts and nuts.
Thereafter, the front door 25 and rear door 26 are assembled and connected to the canvas 24 via a canvas mounting fitting 52, which will be described later. After that, assemble completely while adjusting the overall positional relationship.

As is clear from the above explanation, the floor assembly 1 of the cargo box C is fixed on the chassis frame B, and on this floor assembly 1,
The packing box C is completed by fixing the so-called upper parts, but for convenience of explanation, this upper part is shown here as "rear body assembly 2" as if it were one independent assembly. be.

In addition, the front frame 21 and the rear frame 2
The canvas 24, the front door 25, and the rear door 26 may be provided between one side of the two, and a panel may be provided between the other side. Furthermore, only one of the front door 25 and the rear door 26 may be used.

Next, the configuration and attachment relationship of the rear body assembly 2 will be explained in detail.

<Front Frame> As shown in FIG. 6, the front frame 21 consists of left and right vertical frame parts 21a, 21a and upper and lower horizontal frame parts 21b, 21b, and is generally formed into a gate shape as a whole. The cross-sectional shape of the front frame 21 is approximately U-shaped as shown in FIGS. 7 to 10, and an outwardly projecting flange 21c is provided at the opening edge. A cross member 31 is provided between the upper portions of the left and right vertical frame portions 21a, 21a.
Cross member 31 and left and right vertical frame parts 21
The mounting structure with a and 21a is shown in Figures 10 and 11.
As shown in the figure, a cross member 31 having an opening-shaped cross section is inserted between the flanges 21c of the vertical frame portion 21a and fixed by welding. There are a plurality of reinforcing members 32 (four in the drawing) between this cross member 31 and the lower horizontal frame portion 21b.
are placed parallel to each other. Further, as shown in FIGS. 7 and 8, the front frame 21 is provided with a board 33 on the inside and two panels 34 on the outside. As shown in FIG. 8, the board 33 is fixed to the horizontal and vertical frame parts 21b and 21a, the cross member 31, the reinforcing member 32, etc. by tapping screws, adhesive, or other fixing means, and the panel 34 is It is fixed to the horizontal and vertical frame parts 21b and 21a, the cross member 31, the reinforcing member 32, etc. by tapping screws, adhesive, or other fixing means. Note that the lower horizontal frame portion 21b
has a flange 2 at its end, as shown in FIG.
1c is cut out, joined to the vertical frame portion 21a, and fixed by welding.

<Rear frame> As shown in FIG. 12, the rear frame 22 is
It consists of left and right vertical frame parts 22a, 22a and upper and lower horizontal frame parts 22b, 22b, and is generally formed into a gate shape as a whole. rear frame 2
The cross-sectional shape of 2 is approximately U-shaped as shown in FIG. 13, and plates 35 are fixed to the openings by welding at certain places. As shown in FIG. 14, the lower horizontal frame part 22b has its end joined and welded to the vertical frame part 22a, and a plate 35 is welded and fixed to the same part.

<Mounting Structure of Front Frame 21 and Rear Frame 22> To attach the upper part, that is, the rear body assembly 2 to the floor assembly 1, basically, the front and rear frames 21 and 22 are attached to the floor assembly 1. This is done by fixing. The mounting structure will be explained below.

As shown in part in FIG. 5, the vertical frame portions 2 of the front frame 21 and rear frame 22
The lower ends of the brackets 1a and 22a are fixed to the inner surface of the portion of the bracket 14 protruding from the floor side frame 12 with bolts 28 and nuts 29. In addition, as shown in FIG. 16, the front frame 2
The lower horizontal frame portion 21b of the floor 11 is attached to the horizontal joist 13 provided on the lower surface of the front end of the floor 11 with bolts 28,
As shown in FIGS. 16 and 27, the lower horizontal frame portion 22b of the rear frame 22 is fixed to a bracket 30 provided at the rear end of the floor 11 with bolts 28 and nuts 29. . In addition, nut 29 is horizontal joist 13
It is fixed in advance to the inner surface of the bracket 30 by welding, and the horizontal frame parts 21b, 22b
A bolt 28 is screwed in using a tool through a working hole (not shown) formed in the hole (this hole will be closed later).

As described above, the front and rear frames 21 and 22 of the upper parts are fixed on the floor assembly 1 by bolt-to-bolt connection.

<Roof assembly> The roof assembly 23 is shown in Fig. 2 and Fig. 1.
As shown in Figures 5 to 17 (particularly Figures 2 and 17), the left and right elongated stepped side roof panels 40, 40 are arranged in parallel between the left and right side roof panels 40, 40. It is composed of a plurality of elongated substantially flat center roof panels 41. The side roof panels 40, 40 are stepped and have a lower outer side. The number of center roof panels 41 is determined depending on the width of the rear body assembly 2, and FIG. 2 shows a case where five center roof panels are provided.
The sides of the side roof panel 40 are formed lower and flat than the inner side, and a substantially vertical flange 40a is formed by clinching at the most lateral end. The distance between this flat part, the flange 40a sandwiching it, and the inner stepped part (wall)
A drip channel 40b having a shaped cross section is formed.

The connections between each side roof panel 40 and the center roof panel 41 and between each center roof panel 41 form a vertical flange along each end that connects to each other, as shown in FIG. is longer than the other flange, the flanges are brought into contact with each other, and the longer vertical flange is clinched so as to wrap around the shorter vertical flange to form a vertical clinched portion 40c. This is done by welding.

By combining the roof panels 40 and 41 to form a roof in this way, it is possible to easily accommodate rear body assemblies 2 of different sizes. That is, in the length direction, it is sufficient to cut each panel according to the length, and in the width direction, the width of the center roof panel 40 can be cut according to a predetermined roof width, so that changes in width can be accommodated. Therefore, mass production is excellent and costs can be reduced (this is also due to the fact that both roof panels 40 and 41 can be roll-formed). Such a roof can be applied not only to the cargo box of the present invention but also to a wide variety of cargo boxes for vehicles in general.

Roof side frames 42, 42 are fixed to the lower surface of the side section (drip channel 40b) of each roof side panel 40 by welding. This roof side frame 42 is made of the same member as the floor side frame 12, and is attached so that its opening guide rail 42a faces downward.

As shown in FIG. 16, roof close panels 45 and 46 are fixed to the lower surfaces of the front and rear ends of the roof substantially perpendicularly to the roof. Same panel 4
A flange that is bent toward the front side of the roof is formed at the upper end and both ends of the roof, and a flange that is bent inward is formed at the lower end that extends substantially horizontally in the width direction. These upper and lower flanges allow the close panels 45 and 46 to form the lower surfaces of the front and rear ends of the roof and each roof side frame 4.
2, 42 are welded and fixed to the inner surfaces of the front and rear ends.

Further, as shown in FIG. 17, a plurality of upper cross frames 49 are provided between the inner surfaces of the left and right roof side frames 42, 42, and extend in a direction perpendicular to the length direction of the roof panels 40, 41. There is. In this example, the upper cross frame 49 is composed of both end members 49a, 49a whose one ends are fixed to the roof side frames 42, 42, and an intermediate member 49b which fixedly connects the other ends to each other. Both end members 49a and 49b have a U-shaped cross section, and their ends are inserted into the interior of intermediate member 49b and fixed by welding (see FIG. 18). Flanges facing in opposite directions are formed at the upper end opening of the intermediate member 49b, and are fixed at appropriate locations between the flange and the roof panel with an adhesive 49c. These members 49a, 49a, 4
Numerals 9b are for reinforcing the roof assembly 23, and in this example, they are arranged at three locations of the roof assembly 23, including the front, rear, and center positions.

The roof assembly 23 is constituted by the side roof panel 40, center roof panel 41, roof side frame 42, roof cross panels 45, 46, upper cross frame 49, and the like.

<Roof Assembly Mounting Structure> As shown in FIG. 15, mounting bolts 43 are fixed at four positions at the front and rear ends of the roof side frames 42, 42, respectively, protruding downward from the guide rail 42a. This mounting bolt 43
A rectangular washer having a width larger than the opening width of the guide rail 42a is welded to the guide rail 42a, and by welding this washer above the guide rail 42a, that is, to the top side of the vertical flange, the bolt 43 is attached to the rail 42a. Fixed. The tip of the bolt 43 is formed into a conical shape.

Connect these mounting bolts 43 to the front frame 2.
1. Horizontal frame section 2 above the rear frame 22
Mounting holes 21d formed at the flow end positions of 1b and 22b,
21d and screwing the nuts 44 onto the mounting bolts 43, the roof assembly 23 is attached to the front frame 21 and the rear frame 22.
fixed between the upper parts of the The conical part 43a at the lower end of the mounting bolt 43 serves as a guide when inserted into the mounting holes 21d and 22d, and this conical part 43a allows the roof assembly 23 to be positioned and inserted into the front frame 21 and rear frame 22. Work can be done easily.

According to this mounting structure, the roof assembly 2
The installation work (3) can be performed quickly and accurately, improving work efficiency, reducing installation costs, and significantly increasing mass productivity.

As shown in FIG. 16, the horizontal flanges formed at the lower ends of the roof close panels 45 and 46 are connected to the horizontal frame parts 21b and 22b above the front frame 21 and the rear frame 22 by bolts 47 and nuts. 48. Thereby, the connection between the roof assembly 23 and the front and rear frames 21 and 22 becomes stronger. Such a mounting structure can be applied not only to the cargo box of the present invention but also to cargo boxes for vehicles in general.

<Door support structure> Rollers 60 as shown in FIG.
(only one is shown in this figure) is provided on the vertical axis, and the same roller 60 is provided on the lower surface of the roof side frame 42 in the guide rail section 4.
2a (inside the gap) so as to be movable along it. Further, as shown in FIG. 19, two rollers 61 are provided on a horizontal axis at two locations on the front and back of the lower surface of each door 25, 26, and the rollers 61 guide the floor side frame 12. It is engaged on the rail portion 21a so as to be movable along it. A portion of the roller 61 protrudes into the gap of the guide rail 12a, and has a shape in which both sides have a width wider than the gap, so that the both sides support the load. In contrast, the upper roller 60 only performs a guiding action. Of course, a support method in which the load is supported above and the load is guided below is also conceivable. In the present invention, either may be used.

The front door 25 and the rear door 26 are supported by this support structure so that they can slide along the guide rails 12a, 42a.

Note that a known door lock device is provided between the door 25 and the front frame 21 and between the door 26 and the rear frame 22. Furthermore, a canvas 24 is attached between the rear and front ends of each door 25 and 26, as will be described later, and when both doors are closed (doors are locked), the canvas 24 is stretched in both directions.
When one door is opened, the canvas 24 slides along with it and folds up in an accordion style.

<Canvas support structure> On the inner surface of the canvas 24 whose both ends are connected between the doors 25 and 26, there are
As shown in FIG. 4, a plurality of pipes 56 extending in the vertical direction are arranged at appropriate intervals in the front-rear direction of the canvas 24 via a bag-shaped mounting cloth 57 sewn to the inner surface of the canvas 24. . In addition, a reinforcing cloth 5 is placed between the pipe 56 and the canvas 24.
7a is inserted and sewn together. At the upper end of each pipe 56 there are two rollers 5 as shown in FIG.
8 is supported at both ends of a shaft provided perpendicularly to the axis of the pipe 56, and the roller 58 is mounted within a guide rail section 42a (U-shaped groove between each flange and the inner surface of the frame) provided inside the roof side frame 42. is movably engaged therealong. Also, pipe 5
The lower end of the floor side frame 12 is formed into a flat shape, and a coating layer 59 made of Teflon resin is formed on the outer surface of the lower end (see FIGS. 17 and 20).
(the gap between the flanges) so that it can move along it.

The canvas 24 is supported slidably along the guide rail portions 12a, 42b by this support structure. Note that the canvas 24 is preferably made of lightweight and durable fiber.

According to the above-mentioned support structure, the canvas 24 can be reliably supported without any hindrance in folding or stretching the canvas 24, and
Canvas 24 accompanying the sliding of doors 25 and 26
The sliding operation is smooth, and no unpleasant sound is generated during the sliding operation (due to the roller 58 and coating layer 59). Furthermore, assembly can be easily performed.

It is also conceivable to provide a guide roller similar to the roller 60 (see FIG. 17) provided at the upper part of the door at the lower end of the pipe 56 and insert it into the guide rail portion 12a.

<Mounting structure of door and canvas> Doors 25, 26 and canvas 24 are
As shown in the figure, they are connected using a canvas mounting bracket 52. As shown in FIG. 22, the canvas mounting bracket 52 has a cylindrical portion 52a formed at one end, and a rod-shaped core material 53 made of an elastic material such as rubber or synthetic resin is attached to the cylindrical portion 52a. The end of the wrapped canvas 24 is inserted and fixed together with the concentric material 53. That is, the end portion of the canvas 24 is wrapped around the core material 53, and these are wrapped around the cylindrical portion 5.
2a, the cylindrical portion 52a is pressurized to cause it to contract and deform slightly. The core material 53 presses the end of the canvas 24 against the inner peripheral surface of the cylindrical part 52a by its elastic force, so that the end of the canvas 24 is pressed against the inner peripheral surface of the cylindrical part 52a.
It prevents him from getting out of 2a. In this way, the canvas mounting bracket 52 that fixed the end of the canvas 24 is attached to the front door 52 and the rear door 2.
As shown in FIGS. 21 and 22, it is attached to one side of 6 with bolts 54 and nuts 55. Note that the canvas mounting bracket 52 is attached to the door 2.
The length may span the entire length of the upper and lower sides of the side portions 5 and 26, or it may be divided at appropriate locations.

According to this mounting structure, there is no need to use adhesive or the like, and the ends of the canvas 24 can be easily and reliably fixed to the front door 25 and the rear door 26. Further, since the canvas 24 can be assembled, it is advantageous in terms of parts management.

Further, as shown in FIG. 17, the roof side frames 42, 42 each have a canvas 2
4. A seal 62a is provided to cover the tops of the front door 25 and rear door 26. The upper end of the seal 62a is fitted into a dovetail-shaped mounting bracket fixed to the lower surface of the frame 42 and fixed. As a result, the roof side frame 42,
42 and canvas 24 or front door 2
5. A seal structure is formed to prevent water from entering the rear body assembly 2 through the gap with the rear door 26. Furthermore, as shown in FIGS. 17 and 19, seals 62b are provided at the lower ends of the front door 25 and the rear door 26 so as to cover the outer surface of the floor side frame 12, and a similar seal structure is formed. ing. Further, the lower end portion of the canvas 24 extends to cover the outer surface of the floor side frame 12, and a seal structure is similarly formed. Further, as shown in FIG. 26, a seal 65 is provided on the end surface of the rear door 26 facing the vertical frame portion 22a of the rear frame 22, and a seal 65 is provided between the rear frame 22 and the rear door 26 when the rear door 26 is closed. A seal structure is formed to prevent water from entering through the gaps. As shown in FIG. 28, this seal 65 is provided with a hollow portion 65a inside thereof, and is crushed into a flat shape when the rear door 26 is closed. Although not shown, the front door 25 is also provided with a similar seal, and a seal structure is formed between the front door 25 and the front frame 21 when the front door 25 is closed.

<Load shear prevention device> The canvas 24 does not have a large resistance to the load inside the rear body assembly 2. In other words, it cannot support loads like a board or plate. Therefore, as shown in FIGS. 1, 2, 17, and 21, a plurality of belts 64 (in this example, two
Book) is installed. This belt 64 is made of a flexible material, and as shown in FIG.
The end is connected to the front door 2 through the hook 63.
5. It is fixed to one side of the rear door 26. This hook 63 is secured to the side of the door by bolts 54 and nuts 55 from the outside of the canvas mounting bracket 52. Further, the end of the belt 64 is folded back through a hook 63 (see Fig. 23), and the tension of the belt 64 can be adjusted by adjusting the length of the folded part using, for example, a buckle device (not shown). It has been adjusted. Further, the belt 64 is sewn to a mounting cloth 57 that supports the pipe 56, as shown in FIG. In this way, the belt 64 is supported by the pipe 56 at key points on the inner surface of the canvas 24, so that the tension can prevent the load from shifting considerably.

According to this cargo shift prevention device, the belt 64 holds the cargo so that it does not directly act on the inner surface of the canvas 24. Therefore, there is no risk that the load will collapse in the lateral direction of the truck, and the lateral load of the load will not directly act on the canvas 24 and damage the canvas 24.

<Shutter Door Mounting Structure> In this example, a shutter door 27 is provided at the rear of the cargo box C (within the frame of the rear frame 22). This shutter door 27 is shown in FIGS. 25 and 2.
As shown in FIG. 9, it is installed vertically movably between the left and right vertical frame parts 22a of the rear frame 22,
A plurality of shutter panels 71 are arranged in parallel in the vertical direction and are rotatably connected to each other. The connecting portion 72 of the shutter panel 71 is connected to the 26th
As shown in FIG. 27, the shutter panel 7
A cylindrical engaging portion 7 is provided on the upper edge and the lower edge of 1, respectively.
1a, 71b are provided, and these engaging portions 71a, 71
b are rotatably engaged with each other. Shutter panel connecting pins 73 are fitted into the left and right end positions of the connecting portion 72, respectively.
One end of this shutter panel connecting pin 73 is formed into a conical shape, and is press-fitted into an engaging part 71b that engages with the center side of the connecting part 72. A roller 74 is attached to the other end protruding from the connecting part 72. It is rotatably provided. The roller 74 is movably engaged within a guide rail 75 having a U-shaped cross section and provided on the inner surface of the vertical frame portions 22a, 22a. As shown in FIG. 29, the guide rail 75 is provided along the vertical frame portion 22a, and its upper portion is largely curved so as to extend along the inner surface of the roof side frame 42 to the front frame 21.
extending to the side. This rail 75 is supported below the upper cross frame 49 (see FIG. 17), and its front end ends near the front frame 21. The shutter door 27 is guided and supported by the guide rail 75 and moves to open and close the rear opening of the rear body assembly 2.

In addition, as shown in FIG. 27, the shutter door 2
Unlike the other shutter panels 71, the lowermost shutter panel 71 of No. 7 has a substantially L-shaped cross section, and has a seal 65 (see FIG. 28) similar to that provided on the rear door 26 described above on its lower surface. The seal 65 prevents water from entering the rear body assembly 2 through the gap between the lowermost shutter panel 71 and the lower horizontal frame portion 22b of the rear frame 22.

According to the above-described shutter door mounting structure, the shutter panel connecting pin 73 is inserted into the left and right ends of each connecting portion 72 of the shutter panel 71, and the roller 74 that engages with the guide rail 75 is provided at the end of the shutter panel connecting pin 73. Since the shutter door 27 is reliably supported, the roller 74 is also
Since it rolls within the guide rail 75, the opening/closing operation is light and smooth, and no noise is generated. Note that such a support structure for a shutter door can be widely applied to a rear door of a cargo box of a general vehicle.

<Balance Weight Structure of Shutter Door> As shown in FIG. 29, a bracket 77 is provided at the upper end of the shutter door 27, and one end of a wire 78 is connected to the bracket 77. As shown in FIGS. 30 and 31, the wire 78 is inserted through the guide rail 75 described above, and the other end is connected to a guide roller 79 provided near both ends of the horizontal frame 21b above the front frame 21, and an insertion hole. It extends downward through the front frame 21b via 79a, and its lower end is connected to the upper end of the balance weight 80.
The balance weight 80 is attached to the front frame 21
In the space between the board 33 and the panel 34, it is preferably guided by a guide (not shown) to move up and down. This balance weight 80 and the shutter door 27 are connected via a wire 78, and are balanced with each other when the shutter door 27 is in a half-open state. Then, when the shutter door 27 is lifted upward from this state, the balance is lost and the balance weight 80 descends, and the weight of the balance weight 80 acts on the shutter door 27 via the wire 78, and the shutter door 27 is pulled up. On the other hand, when the shutter door 27 is pushed down from the balanced position, the balance is lost and the shutter door 27 descends under its own weight to become fully closed.

Note that the cross member 31 of the front frame 21 has a hole 31 through which the balance weight 80 passes.
a is formed.

According to the balance weight structure of the shutter door described above, the balance weight 80 acts on the opening/closing operation of the shutter door 27, so a large force is not required for the opening/closing operation. Such a balance weight structure can be widely applied to cargo boxes of general vehicles.

According to the packing box C having the above configuration, the guide rail 12
When the front door 25 or the rear door 26 is slid along the lines a and 42a, the canvas 24 also slides while being folded in the same direction, so that the side surface of the cargo box C can be opened wide from either the front side or the rear side. . This significantly improves the efficiency of loading and unloading loads from the lateral direction of the truck. In addition, by widening the sides of the cargo box C and opening the shutter door 27 at the rear of the cargo box C, it is possible to load and unload cargo from the side and rear of the truck at the same time, improving work efficiency. becomes.

Also, the front frame 21, rear frame 22, roof assembly 23, canvas 24, door 25, which constitute the rear body assembly 2,
26. The shutter door 27 is constructed as described above and can be assembled into units in advance, and since no welding is required to assemble these main components, it can be assembled within the vehicle manufacturer. . This eliminates the need to transport bare vehicles each time to a bodywork manufacturer, such as in an aluminum packing box.

Furthermore, each component is suitable for mass production, and costs can be easily reduced.

Furthermore, since the opening space on the side surface of the cargo box C is wide and the opening location can be freely set using the front door 25 or the rear door 26, pallet stacking is possible. Also, unlike a canopy, cardboard boxes can be loaded neatly without creating extra gaps, providing flexibility in terms of cargo contents.

In the above embodiment, the rear door of the cargo box C is constructed with the shutter door 27, but it may be constructed with a door of double-fold type or other type.

As explained above, the vehicle cargo box roof mounting structure according to the present invention has a front frame and a rear frame fixed to the front and rear positions of the floor assembly, respectively. A canvas and a door provided on at least one of the front and rear sides of the canvas are movably suspended from a guide rail portion provided on a side frame of the canvas, and holes provided on the upper surfaces of both frames are provided with a The roof is attached to the cargo box by inserting and fixing positioning mounting bolts provided at the front and rear positions of the roof.

More specifically, a front frame and a rear frame are respectively attached to the front and rear positions of a floor assembly fixed on the chassis frame of the vehicle using fixing means using bolts and nuts. The assembly can be attached using bolts and nuts.

These chassis frames, floor assemblies,
The front and rear frames and roof assembly units are all assembled to each other using bolts and nuts, making installation to the vehicle easy as there is no need to use means such as welding or riveting. Compared to aluminum shipping boxes, they are easier to assemble and mount.

The present invention also provides a guide rail provided on the side frame at the top and bottom of the cargo box at least on one side between the two frames installed at the front and rear of the floor assembly. Since the door is suspended from at least one side, the material cost is low, the manufacturing cost can be reduced, and it is also more durable than a packing box using a canopy.

In addition, since the sides of the cargo box are formed by a combination of the canvas and the door, there is no need to open the sides of the cargo box from both the front and rear directions, which allows the sides of the cargo box to be opened wide from both the front and rear directions. The workability of loading and unloading cargo is much improved compared to aluminum packing boxes or packing boxes made of canopies, and the appearance is not monotonous, is rich in variety, and has excellent design.

Furthermore, it has various effects such as being excellent in mass production and easily adaptable to different body sizes.

The door and canvas may be combined on both sides or on one side of the rear body assembly. In each case, a combination of one door and a canvas, and a combination of two doors and a canvas are possible. Depending on which of these is selected, the above-mentioned effects will differ slightly, but the essential effects will remain the same.

[Brief explanation of the drawing]

Fig. 1 is a side view of a truck equipped with an embodiment of the packing box of the present invention, Fig. 2 is an exploded perspective view of the packing box of the invention shown in Fig. 1, and Fig. 3 is the same as that shown in Fig. 2. FIG. 4 is a sectional view taken along the line - in FIG. 3, and FIG. 5 is a sectional view taken along the line - in FIG. Figure 6 is a perspective view of the front frame viewed from the front (only the bones are shown), Figure 7 is a cross-sectional view taken along the - line in Figure 6, and Figure 8 is a perspective view of the front frame viewed from the front.
A sectional view taken along the - line in the figure, FIG.
Fig. 10 is an enlarged perspective view of part a in the figure, Fig. 10 is a sectional view taken along the - line in Fig. 6, and Fig. 11 is a sectional view taken along the - line in Fig. 10.
12 is a perspective view of the rear frame seen from the front; FIG. 13 is a sectional view taken along line - in FIG. 12; and FIG. 14 is a sectional view taken along line - FIG. 15 is an enlarged perspective view of part b; FIG. 15 is a partially omitted cross-sectional view taken along line - in FIG. 2, showing the attachment relationship with the front and rear frames; FIG. 17 is a partially omitted cross-sectional view of the packing box of the present invention along the line, and FIG. 18 is a partially omitted cross-sectional view along the line shown in FIG.
19 is an enlarged view of part c in FIG. 17, FIG. 20 is a side view of the lower end of the pipe, and FIG. 21 is a side wall of the packing box of the present invention (door, canvas etc.), partially omitted vertical cross-sectional view, No. 22
The figure is an enlarged view of part d in Fig. 21, Fig. 23 is a perspective view showing an example of the canvas mounting bracket and hook, Fig. 24 is an enlarged view of part e in Fig. 21,
Fig. 5 is a partial left rear view of the packing box of the present invention seen from the rear, Fig. 26 is a sectional view taken along the - line of Fig. 25, and Fig. 27 is a - of Fig. 25.
28 is a side view of the seal, FIG. 29 is a left side view showing a part of the rear end of the packing box of the present invention, and FIG. 30 is a left side view showing part of the front end of the packing box. The plan view and FIG. 31 are perspective views of the balance weight portion. A... Cab, B... Palm frame, C...
Loading box (rear body), 1...Floor assembly, 2...Rear body assembly, 11...Floor, 12...Floor side frame, 12a...
...Guide rail section, 13...Horizontal joist, 14...Bracket, 21...Front frame, 21a...
Vertical frame part, 21b...Horizontal frame part, 2
1c...Flange, 21d...Mounting hole, 22...
Rear frame, 22a... Vertical frame portion, 22
b...Horizontal frame portion, 23...Roof assembly, 24...Canvas, 25...Front door, 26...Rear door, 27...Shutter door,
28... Bolt, 29... Nut, 30... Bracket, 31... Cross member, 32... Reinforcement member, 33... Board, 34... Panel, 3
5...Plate, 40...Side roof panel,
40a...Flange, 40b...Drip channel, 40c...Clinch portion, 41...Center roof panel, 42...Roof side frame,
42a...Guide rail part, 43...Mounting bolt,
44...Nut, 45...Roof close panel, 46...Roof close panel, 47...Bolt, 48...Nut, 49...Upper cross frame, 49a...Both end members, 49b...Intermediate member, 49c ... Adhesive, 52 ... Canvas mounting bracket, 52a ... Cylindrical part, 53 ... Core material, 54
...Bolt, 55...Natsuto, 56...Pipe,
57...Mounting cloth, 57a...Reinforcement cloth, 58...Roller, 59...Coating layer, 60...Roller, 61...Roller, 62a...Seal, 62b
... Seal, 63 ... Hook, 64 ... Belt,
65... Seal, 65a... Hollow part, 71... Shutter panel, 71a... Engaging part, 71b... Engaging part, 72... Connecting part, 73... Shutter panel connecting pin, 74... Roller, 75... ...Guide rail, 77...Bracket, 78...Wire, 79
... Guide roller, 79a ... Insertion hole, 80 ...
balance weight.

Claims (1)

[Scope of utility model registration request] The front frame and the rear frame are respectively fixed to the front and rear positions of the floor assembly.The front frame and the rear frame are fixed to the front and rear positions of the floor assembly. A door provided on at least one side is movably suspended, and positioning and mounting bolts provided at the front and rear positions of the roof are inserted and fixed into the holes provided on the top surfaces of both frames to attach the roof to the cargo box. Roof mounting structure for vehicle cargo boxes.