JP2020045013A - Structure of door of cargo box in truck - Google Patents

Abstract

To provide a structure of a door of a cargo box in a truck of which a usable time is not restricted, and which can perform loading and unloading of a cargo quickly and efficiently.SOLUTION: A structure of a door of a cargo box in a truck comprises: a lower cargo box 12 having single swing type or double swing type lower side doors 14A, 14B; and an upper cargo box 50 which is detachably fitted to the lower cargo box 12, has single swing type or double swing type upper side doors 52A, 52B, and is regarded as a load. The lower side doors 14A, 14B and the upper side doors 52A, 52B are integrated by mounting the detachable upper cargo box 50 to the lower cargo box 12, and these lower side doors 14A, 14B and upper side doors 52A, 52B can be opened and closed as one door.SELECTED DRAWING: Figure 3

Description

The present invention relates to a structure of a door of a packing box in a lorry, and more particularly, to a structure of a door used when loading and unloading a load on a packing box installed on a vehicle body.

In recent years, the needs of individual home delivery have been increasing in the retail industry along with the social change such as the aging society, and the delivery by light trucks (eg, light trucks) has been increasing due to the small turnaround and operation costs. Has become. The light truck has a maximum loading dimension defined by the Road Traffic Law, and in particular in the height direction, loading of luggage is allowed up to a total height of 2.5 m.

To take advantage of the convenience of such a light truck, a “light truck” described in Utility Model Registration No. 3071308 (Patent Document 1) is known as an example.

The invention described in the publication is characterized in that the space inside the packing box of the light truck is divided into a freezing section and a miscellaneous goods section, and the upper side of the packing box is used as a long article storage section.
According to this, it is possible to load not only frozen goods and miscellaneous goods but also long goods, and it is possible to cope with various kinds of luggage.

  In general, double doors are used for doors of lorries equipped with packing boxes, and a bar-shaped structure is often used as a lock mechanism for such a door. The door has a hinge attached to one end and can be opened and closed around one end, while the other member without the hinge is attached with the following members to provide a bar structure. A locking mechanism is configured.

For example, a bar-shaped member (as a bar) slidable in the vertical direction, an opening / closing lever for sliding the bar-shaped member, a pair of upper and lower fitting members into which the upper end and the lower end of the bar-shaped member are fitted when the door is closed. When the open / close lever is moved from the closed position to the open position, the fitting state between the rod-shaped member and the fitting member is released, so that the opening state can be opened.

Japanese Utility Model Registration No. 3071308 JP 2006-96244 A

However, since the long storage section of the light truck described in Patent Document 1 is configured by covering a detachable hood with a frame provided around the upper surface of the packing box, the strength is insufficient at the time of snowfall, etc. Alternatively, it is assumed that moisture may enter, and there is a possibility that the usable time is limited. In addition, when loading and unloading cargo into and out of the carton, it is necessary to perform the work of removing and attaching the hood each time, and thus there is a problem that the speed is low and the loading and unloading work is complicated. .

  On the other hand, Japanese Patent Application Laid-Open No. 2006-96244 discloses an invention relating to a luggage box for a lorry having an upper split box that can be raised and lowered and a fixed lower split box. This invention is aimed at ensuring heat insulation and sealing between the upper and lower divided box bodies, and the structure of the door at the rear side opening, such as whether a bar-type lock mechanism is adopted or not is described. Not touched. Therefore, there is still a problem on how to open and close the door during loading / unloading operations.

The present invention has been made in view of such circumstances, and there is no limitation on the period of use, and the structure of a cargo box door in a lorry, which allows quick and efficient loading and unloading of cargo. It is intended to provide.

The invention according to claim 1 has a lower packing box having a single-door or double-door type lower door, and a single-door or double-door upper door detachably attached to the lower packing box. , A structure of a cargo car door including an upper cargo box regarded as a load, wherein the lower door and the upper door have a detachable upper cargo box attached to the lower cargo box. The lower door and the upper door can be opened and closed as one door.

According to a second aspect of the present invention, in the first aspect, the lower door and the upper door have a lower vertical bar and an upper vertical bar, respectively, as lock mechanisms thereof, and an upper packing box is mounted on the lower packing box. In this case, the lower vertical bar and the upper vertical bar are connected to each other so that a lock operation and an unlock operation can be performed.

According to a third aspect of the present invention, in the first or second aspect, a polygonal male socket and a female socket are used as an interlocking member for connecting the lower vertical bar and the upper vertical bar. Features.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the upper packing box is formed of fiber-reinforced plastic as a material thereof.

ADVANTAGE OF THE INVENTION According to this invention, in addition to ensuring a loading space, at the time of an unloading operation | work and a loading operation | work, a lower side door and an upper side door of a rear part can be opened and closed collectively. This allows loading and unloading of the load from the large-area opening with the door opened, thereby improving the work efficiency during transportation.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows the outline of the light truck with which the structure of the door of the packing box in the truck according to this invention was applied, FIG. 1 (a) is the figure seen from the side, FIG. FIG. Similarly, FIG. 2A is an explanatory view schematically showing a light truck to which a structure of a packing box door according to an embodiment of the present invention is applied, wherein FIG. It is the figure seen from the back side. Similarly, it is a structure of the door of the packing box which concerns on one Embodiment of this invention, Comprising: It is a rear view which shows the relationship between the lower packing box which is the principal part, and an upper packing box. Similarly, FIG. 4A is a diagram showing the structure of a vertical bar, which is a structure of a door of a packing box according to an embodiment of the present invention, and FIG. 4A shows a structure of a lower packing box constituting a lock mechanism. FIG. 4B is an explanatory diagram showing the relationship between the vertical bar and the vertical bar of the upper packing box, and FIG. 4B is an explanatory diagram showing the mounting state of the vertical bar in each packing box. Similarly, it is the structure of the door of the packing box which concerns on one Embodiment of this invention, Comprising: It is the figure which looked at the state which mounted the upper packing box to the lower packing box from the back side. Similarly, in the structure of the door of the packing box according to an embodiment of the present invention, the vertical bar of the lower packing box and the vertical bar of the upper packing box is an explanatory diagram showing a situation where the vertical bar is connected, 6A is an enlarged view of a lock mechanism using a vertical bar, and FIG. 6B is an enlarged view of a main part showing a connecting portion between the vertical bar of the lower packing box and the upper packing box.

Hereinafter, a preferred embodiment of the structure of a door of a packing box in a lorry according to the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 and FIG. 2 are explanatory views schematically showing a light truck to which a structure of a door of a packing box in the truck of the present invention is applied.

The light truck has a maximum height of 2.5 m or less when a load is loaded, as defined by the Road Traffic Law.
That is, as shown in FIGS. 1 and 2, in the light truck 10, the upper end of the lower packing box 12 is 2 m and the upper packing box 50 is mounted on the upper part of the lower packing box 12. The height of the upper packing box 50 is determined so as to be 5 m or less. The lower packing box 12 is formed by combining a fiber-reinforced plastic (FRP) panel in which a heat insulating material is sandwiched in consideration of cold insulation, and the upper packing box 50 is formed by combining a fiber-reinforced plastic panel to which a heat insulating material is attached. It is manufactured as a rectangular parallelepiped box having a portion. Of course, not only FRP but also other materials can be used.

The upper packing box 14 is attached to the lower packing box 12 by fixing the four places with a positioning member (not shown) and a mounting bracket (for example, a trade name; a spring catch or the like), thereby using a tool. It can be attached and detached without any problem, and is regarded as a load only under the Road Traffic Law. As described above, the lower packing box 12 is formed by using a material such as FRP which can be reduced in weight, and is improved in strength as compared with the conventional device of Patent Document 1 using a hood. Needless to say, a loading space is similarly secured.
Note that an overhang portion 51 shown by a dashed line may be provided on the front side of the upper packing box 14. By providing the overhang portion 51, the space above the driver's seat and the passenger seat can be effectively utilized. The overhang portion 51 can be an independent space in which an openable and closable partition is installed inside the upper packing box 14.

FIG. 3 is a rear view showing the relationship between the lower doors 14A and 14B of the lower packing box 12 and the upper doors 52A and 52B of the upper packing box 50, which are the main parts of the mini truck of the present embodiment.
As shown in the figure, the lower packing box 12 can open and close a pair of left and right lower doors 14A, 14B in a double-opening manner by four hinges 16, 16,. Has become.
Further, a pair of left and right upper doors 52A, 52B is also attached to the vehicle body side by four hinges 54, 54,.

The lock mechanism for fixing the lower doors 14A and 14B to the vehicle body includes opening and closing operation levers 18A and 18B provided to be embedded at a position from the rear center, and a vertical mechanism provided inside the lower doors 14A and 14B. Bars 20A and 22A, vertical bars 24B and 26B are provided.

The lever 18A for the opening and closing operation rotates the vertical bar 20A and the vertical bar 22A by pulling in the opening direction (toward the front side), thereby moving the engaging portion 23A formed at the lower end, and moving the engaging portion 23A on the vehicle body side. Since the fitting with the fitting member is released, the lower door 14A can be opened.
Similarly, by pulling the lever 18B toward the front side of the lower door 14B on the left side, the vertical bar 24B and the vertical bar 26B rotate, and the engaging portion 23B rotates to open the lower door 14B. Become.
On the other hand, the upper doors 52A and 52B of the upper packing box 50 are also provided with a similar locking mechanism, and the opening and closing operation is performed by the engaging portion 58A at the upper end of the vertical bar 56A and the engaging portion 58B at the upper end of the vertical bar 56B. Is available.

Here, FIG. 4A is an explanatory view showing the relationship between the vertical bar 20A of the lower packing box 12 and the vertical bar 56A of the upper packing box 50 constituting the lock mechanism, and FIG. FIG. 5 is a rear view of a state in which the upper packing box 50 is mounted on the lower packing box 12 viewed from the back side, and FIG. 6 is a vertical bar 20A of the lower packing box 12. FIG. 10 is an explanatory view showing a state where the vertical bar 56A of the upper packing box 50 is connected.

As shown in FIG. 4A, a male joint 28A is provided at the upper end of the vertical bar 20A of the lower packing box 12, and the male joint 28A is provided with a vertical bar 56A of the upper packing box 50. The female joint 60A provided at the lower end is fitted.

That is, as shown in FIGS. 5 and 6, when the lower packing box 12 is mounted on the upper packing box 50, the vertical bar 20A of the lower packing box 12 and the vertical bar 56A of the upper packing box 50 are connected. As a result, the rotational torque associated with the opening / closing operation of the lever 18A can be transmitted to the vertical bar 56A.

Since the male joint 28A and the female joint 60A are formed so that the fitting portions thereof are polygonal sockets, the rotational force transmitted from the levers 18A and 18B is lost from the vertical bar 20A to the vertical bar 56A. Can be communicated without. This configuration is the same for the vertical bar 24B of the lower door 14B and the vertical bar 56B of the upper door 52B located on the left side in the drawing.

  Further, as shown in FIG. 4B, the vertical bar 20A is arranged at a predetermined position by a pipe guide 30 attached inside the lower door 14A, and rotates inside the lower door 14A. . This configuration is a common specification for the vertical bars arranged on all packing boxes.

3 and 5, the lower door 14B and the upper door 52B located on the left side can also be opened and closed in the same manner by the upper and lower doors.
Accordingly, the lower door 14A and the upper door 52A, and the lower door 14B and the upper door 52B can smoothly perform opening and closing operations, and perform unloading and loading operations quickly and efficiently. Is possible.

According to the present embodiment configured as described above, in addition to securing the loading space, the doors on the rear side can be opened and closed collectively during the unloading operation and the loading operation. Thereby, it becomes possible to load and unload the load from the large-area opening in which the lower door and the upper door are opened, and it is possible to improve the work efficiency during transportation.
Further, since the upper packing box is formed by using FRP (fiber reinforced plastic), in addition to securing the strength, the weight can be reduced and the increase in the vehicle weight can be suppressed.

In the present embodiment, a case where the present invention is applied to a light-freight transport vehicle has been described. However, the present invention is not limited to this, and can also be used for a medium-sized or large-sized truck.
Further, the present embodiment has been described with respect to a mode in which the invention is applied to a light truck having a double door, but is also applicable to a lorry having a single door.

As described above, in the structure of the luggage box door of the lorry according to the present invention, the lower door and the upper door are integrated with each other, so that the opening and closing operations of the door can be performed collectively, and the unloading / loading operation can be performed. At the time of stacking, easy and efficient work can be performed.
Further, since the upper packing box is formed of a lightweight and strong material such as FRP, there is an effect that it can be operated regardless of the season.

INDUSTRIAL APPLICABILITY The present invention can be used not only in the field of land transportation such as transportation and transportation, but also in various fields requiring delivery such as retailing and service.

DESCRIPTION OF SYMBOLS 10 Light truck 12 Lower packing box 14A 14B Lower door 16 Hinge 18A 18B Lever 20 Pipe anchor 20A, 22A Vertical bar (lower packing box)
23A 23B Engagement part 24B 26B Vertical bar (lower packing box)
28A 28B Male joint 30 Pipe guide 50 Upper packing box 51 Overhang 52A 52B Upper door 54 Hinge 56A 56B Vertical bar (upper packing box)
58A 58B Engagement part 60A 60B Female joint

Claims (4)

A lower packing box having a single door or double door type lower door,
A structure of a door of a cargo car in a lorry having a single-opening or double-opening upper door detachably attached to the lower packing box and an upper packing box regarded as a load. ,
The lower door and the upper door are integrated by attaching a removable upper packing box to the lower packing box, and these lower and upper doors can be opened and closed as one door. A cargo box door structure for a lorry. The lower door and the upper door have a lower vertical bar and an upper vertical bar, respectively, as locking mechanisms, and when the upper packing box is attached to the lower packing box, the lower vertical bar and the upper vertical bar are 2. The structure of a cargo box door according to claim 1, wherein a lock operation and an unlock operation can be performed by linking the doors. The cargo box according to claim 1 or 2, wherein a polygonal male socket and a female socket are used as an interlocking member that connects the lower vertical bar and the upper vertical bar. Door structure. The structure of the door of the luggage box in the truck according to any one of claims 1 to 3, wherein the upper luggage box is formed of a fiber-reinforced plastic as a material thereof.

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