JP2001047928A - Rear gate device for motor truck and rear gate used for rear gate device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure rear view, reduce the amount of consumed gasoline by preventing the deterioration in fuel consumption by reducing the air resistance during travel, prevent the deterioration of rear view and also reduce the effort to raise up a rear gate. SOLUTION: A motor truck rear gate device to be mounted on the rear section of the deck of a motor truck is provided with a pair of guide frames 2 to be perpendicularly arranged at both ends of the rear section of the deck of the motor truck, gate sliders 3, which are connected to the guide frames 2 movably in the vertical direction, a rear gate 5 rotatably connected to the gate slider 3, an elevation means, which is provided in at least one guide frame 2, and a traction member to connect the elevation means and gate sliders 3. The rear gate 5 is provided with a window section 9, which can be opened and closed at an optional place.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear gate device mounted on a rear part of a cargo truck of a truck and a rear gate used for the same, and more particularly, to a rear gate device for a truck using a rear gate having a window which can be opened and closed.
And a rear gate having an openable and closable window.

[0002]

2. Description of the Related Art Conventionally, especially in a truck carrying heavy loads, a rear gate device is generally provided at the rear portion of the loading platform in order to facilitate loading / unloading of loads. is there.

FIG. 7 is a view showing a conventional rear gate device 31. The conventional rear gate device 31 includes a pair of rear gate devices attached to both ends of a rear portion of a truck bed of a truck. Guide frame 3
2, a gate slider 33 is attached movably in the vertical direction.

[0004] A bracket 34 is provided at the lower end of the gate slider 33, and the rear gate 3 is attached to the bracket 34 via a pin 35.
6 is rotatably connected to the rear gate 36.
Can be rotated by about 90 degrees.

A hydraulic cylinder (not shown) is provided inside one of the pair of guide frames 32, and the hydraulic cylinder and the gate slider 3 are not shown.
Reference numeral 3 is connected by a wire or the like, whereby the gate slider 33 can be moved up and down by driving a hydraulic cylinder.

[0006] Normally, the rear gate 36 is raised so as to be perpendicular to the floor surface of the cargo bed, and fixed by a stopper or the like. After that, the rear gate 36 is tilted about 90 degrees by hand or the like so that the rear gate 36 becomes horizontal with respect to the bed surface of the loading platform. Then, after that, the hydraulic cylinder is driven to lower the gate slider 33 in a state of being horizontal with respect to the bed surface of the loading platform. Luggage can be moved.

After the load is moved onto the rear gate 36, the hydraulic cylinder is driven in the opposite direction to raise the gate slider 33 so that the rear gate 36 is substantially flush with the floor of the loading platform. Move the above luggage to the loading platform. Then, after that, the rear gate 36 is erected again to be perpendicular to the floor surface of the carrier, and then fixed with a stopper or the like, thereby closing the rear portion of the carrier.

As described above, using the rear gate device for a lorry has the advantage that even when carrying heavy loads, the loads can be easily loaded and unloaded.

[0009]

As described above, in the case of a rear gate apparatus for a lorry, as described above, when the rear gate apparatus is not used, the rear gate is erected perpendicularly to the floor of the loading platform to close the rear portion of the loading platform. However, this rear gate is
It is necessary to have a certain length for the purpose of loading luggage, and especially for those used in lorries that carry large luggage, it needs a considerable length. In this state, the rear view becomes narrow, and the rear gate becomes a large wall during traveling, so that the air resistance increases. Therefore, in the case of a lorry equipped with the rear gate device, there is a problem in that fuel efficiency is deteriorated and the amount of gasoline consumed is larger than that of a lorry without the rear gate.

[0010] In addition, as described above, a relatively small rear gate device for a lorry generally raises the rear gate which is horizontal with respect to the floor of the cargo bed by hand after use. However, the weight of the rear gate itself is considerable even in the case of a relatively small size.Therefore, it is considered that the conventional rear gate for a lorry requires a considerable amount of labor to raise the rear gate. Was done.

Therefore, the present invention can secure a rear view, reduce air resistance during running, prevent deterioration of fuel efficiency, and reduce the amount of gasoline consumed. It is an object of the present invention to provide a rear gate device for a lorry and a rear gate used for the same, which can reduce the labor required to cause the vehicle.

[0012]

SUMMARY OF THE INVENTION A rear gate device for a lorry according to the present invention is a rear gate device for a lorry mounted on a rear portion of a truck of a lorry, and is disposed vertically at both ends of a rear portion of the truck of the lorry. A pair of guide frames, a gate slider movably connected to the guide frame in a vertical direction, a rear gate rotatably connected to the gate slider, and a lift provided at least inside one of the guide frames. Means, and a traction member for connecting the elevating means to the gate slider, wherein the rear gate is provided with an openable / closable window at an arbitrary position thereof, and the cargo of the present invention. The rear gate used for the rear gate device for automobiles is
A pair of guide frames disposed vertically at both ends of the back of the truck, a gate slider movably connected to the guide frame in a vertical direction, and a rear gate rotatably connected to the gate slider. A rear gate used for a lorry rear gate device including an elevating means provided in the guide frame, and a traction member for connecting the elevating means and the gate slider, wherein a freely openable and closable window is provided. It is characterized in that it is provided in a place.

The rear gate device for a lorry according to the present invention is provided with an openable and closable window at an arbitrary position on the rear gate. Therefore, by opening this window when not in use, it is possible to secure a wide rear view and to reduce air resistance during traveling, thereby making it possible to use a conventional truck. As compared with the rear gate device for use, fuel efficiency is improved, and the amount of gasoline consumed can be reduced.

Further, by opening the window, the center of gravity of the rear gate can be moved to the gate slider side, so that there is an advantage that the labor required for erecting the rear gate can be reduced.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a lorry rear gate device of the present invention and a rear gate used therein will be described with reference to the drawings. FIGS. 1 and 2 show a lorry rear gate device of this embodiment (hereinafter simply referred to as "rear gate"). 1 is a rear gate device of the present embodiment.

In the figure, reference numeral 2 denotes a pair of guide frames, and the guide frames 2 are attached to both ends of the rear part of the truck bed of the truck.

A gate slider 3 is connected to each of the pair of guide frames 2 so as to be vertically movable.

Here, the structure of connection between the guide frame 2 and the gate slider 3 will be described. As shown in the drawing, a guide portion 10 is formed on the guide frame 2 in the vertical direction. In addition, as shown in FIGS. 3 to 5 showing the cross-sectional structure, the connecting portion 16 passes through the guide 10. And this connecting part 16
The movable portion 15 is mounted inside the guide frame 2, while the gate slider 3 is mounted outside the guide frame 2. Therefore, in this embodiment, the gate slider 3 can be moved up and down in a state where the gate slider 3 is in contact with the guide frame 2.

Next, a bracket 4 is attached to each lower end of the pair of gate sliders 3, and a pin 6 is provided between the brackets 4 attached to the lower ends of the pair of gate sliders 3. , The rear gate 5 is rotatably connected. Therefore, in the present embodiment, as shown in FIG. 2, the rear gate 5 can be rotated about 90 degrees between the brackets 4 with the pin 6 as a fulcrum.

Next, in FIGS. 3 to 5, reference numeral 11 denotes a hydraulic cylinder used to raise and lower the rear gate 5. This hydraulic cylinder 11 is provided on at least one of a pair of guide frames. In the figure, reference numeral 13 denotes a wire serving as a pulling member, and one end of the wire 13 is fixed in the guide frame 2, and the other end of the wire 13 is provided at the tip of the piston rod 12 of the hydraulic cylinder 11. It is connected to the movable portion 15 via a roller 17 and an upper roller 14 provided at an upper portion inside the guide frame 2.

Therefore, in this embodiment, the hydraulic cylinder 11 is driven to move up the piston rod 12, thereby lowering the movable section 15 and moving the connecting section 16 and the gate slider 3 as shown in FIG. Through,
The rear gate 5 can be lowered. On the other hand, by lowering the piston rod 12 in the state of FIG.
Can be raised.

Next, in FIGS. 1 and 2, reference numeral 9 denotes a window formed in the rear gate 5. In this embodiment, a window 9 is formed in an upper half portion of the rear gate 5 in an upright state. It is. As shown in FIG. 6, the window 9 is foldable toward the loading platform of the truck in a state where the rear gate 5 is upright.

Further, a concave portion 901 is formed in the front end portion of the window portion 9 along the width direction thereof. Form a projection 502. for that reason,
When the window portion 9 is closed, the convex portion 502 serves as a stopper for the window portion 9 so that the window portion 9 can be fixed to the rear gate 5 stably.

As described above, in the rear gate device of this embodiment, since the window 9 which can be opened and closed is formed at an arbitrary position of the rear gate 5, the window 9 is opened when the rear gate 5 is standing. By doing so, it is possible to secure a rear view, and to reduce the air resistance of the rear gate 5 during traveling.

Also, by opening this window 9,
Since the center of gravity of the rear gate 9 moves to the pin 6 side, when the rear gate 5 stands up after use, the window 9 is first opened and the center of gravity of the rear gate 5 is moved, so that the rear gate 5 can be moved with less labor. It is possible to stand upright in the vertical direction with respect to the bed floor.

In FIGS. 1 and 2, reference numeral 8 denotes a stopper, which has a hook-like shape and is rotatably supported in the rear gate by a spring or the like. More than half of the part is retracted into the rear gate 5. In the drawing, reference numeral 7 denotes a locking portion for locking the stopper 8, and a handle portion of the stopper 8 is fitted into the recess 701.

In FIG. 6, reference numeral 501 denotes a lever for fixing the window 9 in an open state.
, The window portion 9 can be fixed in an open state.

Next, a description will be given of a method of using the rear gate device 1 of the present embodiment configured as described above.
In, the stopper 8 is rotated so that the front end portion is turned upward. Then, the stopper 8
Handle part is retracted into the rear gate 5 and the stopper 8
The engagement between the and the locking portion 7 is released.

Then, in this state, the rear gate 5 is tilted by about 90 degrees by hand or the like, so that the rear gate 5 is in a direction parallel to the bed surface of the loading platform (see FIG. 4).

Thereafter, a switch (not shown) is operated to drive the hydraulic cylinder 11, and the rear gate 5 is lowered by the mechanism described above while keeping the rear gate 5 in a horizontal direction with respect to the floor of the loading platform until the rear gate 5 comes into contact with the ground. Let it. Thereby, it becomes possible to move the luggage on the rear gate 5. FIG. 2 shows this state.

On the other hand, after moving the luggage onto the rear gate 5, the hydraulic cylinder 11 is operated in the reverse manner to raise the rear gate 5 until the rear gate 5 is flush with the floor of the loading platform. Move the above luggage to the loading platform.

After that, the window 9 provided in the rear gate 5 is opened and the window 9 is fixed by the stopper lever 501, and then the rear gate is raised and fixed in a state perpendicular to the floor of the loading platform. . At this time, as described above, since the center of gravity of the rear gate 5 moves to the pin 6 side by opening the window portion 9, the rear gate 5 can be raised with less labor.

Further, by opening the window 9, unlike the conventional rear gate device, it is possible to secure a greater rear view.

Furthermore, even when a large rear gate is used, the opening of the window 9 can reduce the air resistance during traveling, thereby improving fuel efficiency as compared with the conventional rear gate device. It is possible to reduce gasoline consumption.

[0035]

The rear gate device for a lorry and the rear gate used therein according to the present invention are embodied in the above-described embodiment, and have the following effects.

The rear gate device for a lorry according to the present invention comprises:
A lorry rear gate device attached to a rear part of a truck of a lorry, comprising a pair of guide frames vertically arranged at both ends of a rear part of the truck of a lorry, and movably connected to the guide frames in a vertical direction. A gate slider, a rear gate rotatably connected to the gate slider, an elevating unit provided at least inside one of the guide frames, and a traction member for connecting the elevating unit and the gate slider. Wherein the rear gate is provided with an openable / closable window at an arbitrary position thereof, and the rear gate used for the lorry rear gate device of the present invention is provided with a vertical direction at both ends of the rear part of the truck of the lorry. And a gate slider movably connected to the guide frame in a vertical direction. A rear gate rotatably connected to the gate slider, a lifting means provided in the guide frame, and a traction member for connecting the lifting means to the gate slider. A rear gate used in the apparatus, wherein a window that can be opened and closed is provided at an arbitrary position.

As described above, the rear gate device for a lorry according to the present invention is provided with an openable / closable window at an arbitrary position of the rear gate, so that the window is opened when not used. In addition, a wide rear view can be ensured, and air resistance can be reduced during traveling. As a result, fuel efficiency is improved and gasoline consumed is improved as compared with the conventional rear gate device for a lorry. Can be reduced.

Further, by opening the window, the center of gravity of the rear gate can be moved to the gate slider side, and thus there is an advantage that the labor for erecting the rear gate can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state where a rear gate is erected in an embodiment of a rear gate apparatus for a lorry of the present invention.

FIG. 2 is a perspective view showing a state in which the rear gate is lowered in the embodiment of the rear gate device for a lorry of the present invention.

FIG. 3 is a cross-sectional view for explaining a mechanism of the embodiment of the rear gate device for a lorry of the present invention.

FIG. 4 is a sectional view for explaining a mechanism of an embodiment of the rear gate device for a lorry of the present invention.

FIG. 5 is a sectional view for explaining the mechanism of the embodiment of the rear gate device for a lorry of the present invention.

FIG. 6 is a perspective view showing an embodiment of the rear gate device of the present invention with a window opened.

FIG. 7 is a view for explaining a conventional rear gate device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lorry device for lorries 2 Guide frame 3 Gate slider 4 Bracket 5 Rear gate 6 Pin 7 Locking part 8 Stopper 9 Window part 11 Hydraulic cylinder 12 Piston rod 13 Wire 14 Upper roller 15 Movable part 16 Connecting part 17 Intermediate roller

Claims (2)

[Claims] A rear gate device for a lorry attached to the back of a truck of a lorry, comprising: a pair of guide frames (2) arranged vertically at both ends of the rear of the truck of a lorry; ), A rear slider (5) rotatably connected to the gate slider (3), and a rear gate (5) rotatably connected to the gate slider (3), at least inside one of the guide frames (2). Elevating means provided (11)
Lifting means (11) and the gate slider (3)
And a traction member (13) for connecting the vehicle and the rear gate (5), wherein the rear gate (5) is provided with an openable / closable window (9) at an arbitrary position thereof. 2. A pair of guide frames (2) vertically arranged at both ends of a back portion of a truck of a truck, and a gate slider (3) movably connected to the guide frames (2) in a vertical direction. A rear gate (5) rotatably connected to the gate slider (3); an elevating means (11) provided in the guide frame (2); and the elevating means (11) and the gate slider (3). A rear gate used for a lorry rear gate device provided with a traction member (13) for connecting to the lorry, wherein the lorry is provided with an openable window (9) at an arbitrary position. For rear gate.