JP2517868B2 - Underfloor storage device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor storage device for accommodating luggage such as transportation equipment under the floor of a vehicle, and more particularly to an underfloor storage device which can land when loading and unloading luggage.

[0002]

2. Description of the Related Art As for domestic and commercial LP gas, the demand for transportation of LP gas containers (hereinafter referred to as cylinders) tends to increase as the demand increases year by year. This transportation work
In addition to heavy labor, special skills (such as handling high-pressure gas and driving licenses) are required. In addition, housing conditions have deteriorated due to factors such as soaring underground, and along with this, transportation on slopes, stairs, and narrow roads has increased. Therefore, L
It is becoming more and more difficult to secure personnel for transporting cylinders between the P gas filling plant (supplying place) and the consuming place, and the labor shortage is becoming remarkable. Therefore, there is a demand for the development of a carrier and a cylinder delivery truck (vehicle) that allow an inexperienced person to easily carry a cylinder even under the above-mentioned adverse conditions.

The carrier is a carrier device for carrying a cylinder of 20 kg or 50 kg from a truck to a place where the cylinder is installed (consumption place). Under the above-mentioned adverse conditions, a tire or a crawler driven by an engine or a motor is used. Are being developed.

[0004]

However, when the conventional carrier described above is loaded on the bed of a cylinder delivery truck, it occupies the volume of the bed by that amount, and the number of cylinders to be transported, which is the original purpose, is reduced. Inevitably, it reduces transport efficiency and counteracts labor shortage.

Further, when the carrier is unloaded on the bed of a cylinder delivery truck, it cannot be manually carried out due to its size and weight. Since the cylinder delivery truck is provided with a tailgate lifter at the rear end of the carrier to raise and lower the cylinder between the carrier and the ground, it is also possible to use the tailgate lifter to load and unload carriers.

However, in the conventional tailgate lifter, since the table area has only the sum of the standing area of the worker and the bottom area of the cylinder in the standing state, the area is insufficient to mount the carrier. And it was impossible to unload. This is because the carrier inclines and loads the cylinder in order to stably convey the cylinder, and thus the ground contact area of the crawler is necessarily larger than the bottom area of the cylinder.
Therefore, in the conventional tailgate lifter, it is necessary to increase the table area and the load capacity, and it is necessary to remake the tailgate lifter itself. In addition, even if the tailgate lifter table is made large and large, if a carrier is placed on the table each time and reciprocates between the loading platform and the ground, it will be dangerous and will put an extra burden on the worker. . On the other hand, the cylinder delivery truck is provided with the above-mentioned tailgate lifter, and the tailgate lifter moves up and down at the rear end of the loading platform, so it was difficult to attach a new lifting device to a safe position.

It is an object of the present invention to easily load and unload luggage such as the above-mentioned carrier and the like, while not impairing the stability of the vehicle and the volume of the bed during storage, and existing equipment (tailgate lifter, etc.). It is to provide an underfloor storage device that can be operated safely and easily without interfering with.

[0008]

In order to solve the above-mentioned problems, a first aspect of the present invention is directed to a front link arm pivotally supported by a front upper fulcrum on a frame of a vehicle, and a pivot support on a rear upper fulcrum of the frame. The rear side link arm, which is longer than the front side link arm, and the rear side link arm, are axially supported at a rear lower side fulcrum which is always in front of the rear upper side fulcrum, and the front upper side is supported by the front side link arm. A storage unit that is pivotally supported at a front lower fulcrum that is forward to at least the landing point with respect to the fulcrum, and at least a part of the rear surface is open, and the front or rear link arm or a drive unit that drives the storage unit. It is characterized by having and.

According to a second aspect of the present invention, in the first aspect, the storage portion is formed with an inclined bottom having a rearward-increasing slope at a storage position where a rear bottom surface is substantially parallel to the frame. And

[0010]

According to the present invention, the storage section is pivotally supported by two link arms whose upper fulcrums are rearward and whose lower fulcrums are forward,
Each upper fulcrum is pivotally supported on the chassis frame side, and each lower fulcrum is pivotally supported on the storage section side.The rear link arm is longer than the front link arm, so the bottom of the storage section is on the frame during storage. They are almost parallel, and when loading and unloading, they incline backward and downward.

If the storage section has an inclined bottom formed on the rear bottom surface, the front bottom surface of the storage section is substantially parallel to the frame during storage, the rear bottom surface rises backward, and the front side when loading and unloading. The bottom surface inclines downward to the rear, and the bottom surface on the rear side is almost parallel to the frame and lands.

[0012]

The present invention will be described in detail below with reference to the drawings and the like. 1 to 3 are views showing an embodiment of an underfloor storage device according to the present invention, and FIG. 1 is a side view,
2 is a plan view and FIG. 3 is a rear view. The underfloor storage device 10 of this embodiment is provided under the floor of a truck 20, and a storage box 11 is suspended from a subframe 21 (or chassis frame 22) by link arms 12 and 15. This underfloor storage device 10 is a truck 2
It is placed under the floor of the ROH (rear overhang) section of 0, and does not project rearward or widthwise of the luggage carrier of the truck 20 during storage. Therefore, the center of gravity is low, and the stability of the truck 20 during traveling is good.

The storage box 11 is a box whose upper and rear sides are open, and a rear bottom surface is formed with an inclined bottom 11a. In this embodiment, the inclined bottom 11
a is the departure angle (departure angle) α with respect to the horizontal
Only inclined. Therefore, the storage box 11 does not interfere with the road surface when the truck 20 travels.

The link arm 12 has one end rotatably attached to the chassis frame 21 by a shaft 13 and the other end rotatably attached to the front side of the storage box 11 by a shaft 14. In this case, axis 1
3 is provided behind the shaft 14. The link arm 15 is an arm longer than the link arm 12, one end of which is rotatably attached to the subframe 21 by a shaft 16, and the other end of which is attached by a shaft 17 to the rear of the storage box 11. It is rotatably attached to the side. In this case, the shaft 16 is provided behind the shaft 17.

The cylinder 18 is rotatably attached to the bracket 19 whose base side is fixed to the chassis frame 21, and rotatably attached to the rod side below the middle of the link arm 15 via the bracket 18a. The cylinder 18 uses a hydraulic type and can prevent overload at the top dead center or the bottom dead center. The hydraulic pressure of the cylinder 18 is supplied from a hydraulic pump unit (not shown) driven by a battery power supply.

Next, a method of using the underfloor storage device 10 will be described. At the time of storage, the cylinder 18 is in a contracted state, the storage box 11 is raised, and its upper surface is in a position substantially parallel to the chassis frame 22. In other words, the storage box 11 has the chassis frame 2 whose front bottom surface is the truck 20.
It is substantially parallel to 2 and fits perfectly under the carrier. At this time, if the storage box 11 is adjusted to the shape of the load, it can be fixed in all the front, rear, left, right, and top directions. In addition, since the storage box 11 has the inclined bottom 11a formed on the rear side, luggage such as carriers does not drop.

When loading and unloading luggage, the cylinder 18 is extended and the link arms 12 and 15 are rotated counterclockwise in FIG. 1, respectively. At this time, the link arm 12
Since it is shorter than the link arm 15, the bottom surface of the storage box 11 inclines from the horizontal state to the rearward downward state, and when landed, the inclined bottom 11a of the storage box 11 becomes parallel to the road surface (the position of the broken line in FIG. 1). ). Therefore, the carrier and the like can be easily put in and taken out from the rear side, and moreover, the carrier and the like can be put in and taken out of the storage box 11 while operating, and it is not necessary to use extra force.

Also, at the time of descending landing, the storage box 11
The rear end of the truck 20 projects significantly rearward from the rear end of the loading platform of the truck 20 and lands. Therefore, when loading and unloading luggage such as a carrier, work can be performed behind the floor without putting a part of the body such as the head, hands, or feet under the floor of the truck 20, and the safety and workability are extremely excellent. There is.

The present invention is not limited to the embodiments described above, and various modifications and changes are possible, and these are also within the scope of the present invention. For example, an illumination lamp may be provided under the loading platform to facilitate work, or a mechanical lock may be provided on a part of the link mechanism or the drive system to improve safety, or a load may be fixed. A device may be provided.

Further, the truck 20 may be provided with a tailgate lifter. In this case, in order to prevent the tailgate lifter and the underfloor storage device 10 from being mixed with each other, a switch for switching the two is provided in the driver's seat. It is preferable to provide an alarm device. Further, a limit switch may be provided in the operation area of each device so that the operation of the other is prohibited while one is operating.

[0021]

As described in detail above, according to the present invention, safe and easy operation is possible without impairing the stability of the vehicle and the volume of the bed during storage, and without interfering with the existing device at the rear of the vehicle. This has the effect that luggage can be taken in and out.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of an underfloor storage device according to the present invention.

FIG. 2 is a plan view showing an embodiment of an underfloor storage device according to the present invention.

FIG. 3 is a rear view showing an embodiment of the underfloor storage device according to the present invention.

[Explanation of symbols]

 10 Underfloor Storage Device 11 Storage Box 12, 15 Link Arm 13, 14, 16, 17 Axis 18 Hydraulic Cylinder 20 Truck 21 Subframe 22 Chassis Frame 23 Tire

Claims (2)

(57) [Claims] 1. A front link arm pivotally supported by a front upper fulcrum on a vehicle frame, a rear link arm pivotally supported by the frame at a rear upper fulcrum, and a rear link arm longer than the front link arm, and the rear link. From the rear upper fulcrum by the arm
Is also pivotally supported by the rear lower fulcrum that is always in front of the front
At least from the front upper fulcrum by the link arm.
Up to near the landing point is pivoted at the front lower fulcrum in front,
An underfloor storage device, comprising: a storage unit having at least a part of a rear surface opened, and a drive unit for driving the front or rear link arm or the storage unit. 2. The rear bottom surface of the storage portion is the frame.
The underfloor storage device according to claim 1, wherein an inclined bottom having an upward slope is formed at a storage position that is substantially parallel to the chamber.