JPH0650256Y2 - Loading door - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a cargo door, and more particularly to a cargo door for loading or unloading luggage in an automobile.

[Prior art]

Conventionally, when loading or unloading luggage in a car, (a) is a light van type or a one-box car provided with a flip-up type door in the rear,
(B) A single-door or double-door type door was provided in the rear or side such as a cold storage vehicle, a refrigeration vehicle or a van type vehicle, and (c) a shutter type door was provided in a large van type vehicle. In some cases, it has been.

In the case of the flip-up type (a), when the door is opened, the entire length of the door projects to the rear of the vehicle body, which is inconvenient because the vehicle cannot fully approach the warehouse or building when loading or unloading luggage. Further, even if a small amount of small luggage is taken out, it is inefficient to open the whole, which is inefficient, and as the size of a car becomes larger recently, the door becomes large and heavy, which makes opening and closing operation extremely difficult.

Also, in the case of the single-opening or double-door type of (b), a large space is required on the side because the door overhangs to the side of the vehicle body, and even when a small amount of small items is taken out as in the case of (a) above. , There is the inconvenience of opening a large door.

Further, in the case of the shutter type of (c), the size of the opening can be adjusted according to the size of the luggage, but since the storage space for the shutter is provided on the ceiling surface, the storage space for the luggage There is a problem that it is reduced by the amount, and there is a problem that it is difficult to install a window in a space and it is extremely difficult to mount it on a vehicle body having a complicated structure.

[Purpose of device]

The present invention has been made in order to eliminate the drawbacks of the conventional cargo handling door, and the size of the door opening can be changed according to the size of the cargo to be loaded on the vehicle and the position of the cargo. An object of the present invention is to provide a cargo handling door in which the opened door occupies almost no space even when the entire door is opened.

[Constitution of device]

To achieve the above object, a cargo door according to the present invention comprises an upper door having an upper end pivotally supported by an opening of a vehicle body, and a lower door connected to a lower end of the upper door through a connecting device. It is characterized in that it has a mechanism for laterally moving the lower door of the connecting device to the outer surface of the upper door so as to cover the upper door, and a slide mechanism for guiding the lower door along the outer surface of the upper door. .

Therefore, the loading door is divided into an upper door and a lower door, and the upper door is pivotally supported at the upper end in the opening of the vehicle body.
The lower door is connected to the lower end of the upper door to cover the opening.When opening the loading door, make sure that the upper end of the lower door is located outside the lower end of the upper door. The upper door and the lower door are configured to move laterally to the upper side so as to cover the outer surface of the upper door, and the two doors are doubled in an open state. .

To open the upper door, a cylinder mechanism driven by hydraulic pressure or pneumatic pressure, or a gear mechanism driven by a hydraulic motor, air motor, or electric motor is used. It is better to open and close the upper door continuously.

The ratio of the size of the upper door to the size of the lower door may be appropriately determined according to the size of luggage to be loaded, but should the length of the door be substantially the same in order to minimize the open space of the door? , The lower door should be a little longer.

Further, the lower door lateral movement device of the connection device is for moving the lower door to the outside of the upper door to slide the lower door upward along the outer surface of the upper door,
It may be moved to the outside of the upper door so as to incline the whole with a pivot shaft provided at the lower end of the lower door as an axis, or a sliding rail may be provided at the lower end to move the whole in parallel.

This lateral movement device uses a cylinder mechanism driven by hydraulic pressure or pneumatic pressure, or a gear mechanism driven by a hydraulic motor, an air motor, an electric motor, or the like. As shown in this embodiment, a link mechanism is provided for one set of cylinder mechanisms. Preferably, they are connected so that the lateral movement of the lower door and the opening of the upper door can be performed consecutively in one set.

The lateral movement device may be provided with a manual lock device on the lower door without using power, and the lower door may be manually laterally moved by opening the manual lock.

Further, the slide device provided in the connection device is a slide rail provided in the vertical direction on the inner surface of the lower door,
A guide member provided in a lateral movement device is slidably fitted to the lower door, and the lower door is laterally moved so as to be located outside the upper door, and then slid upward along the back surface of the upper door. Is.

The method of sliding the lower door upward may be manual, but if the door is large and heavy, a hydraulic motor,
It may be mechanically performed by using a gear mechanism using an air motor, an electric motor, or the like, a wire rope, or the like.

Further, in the case of the manual operation, a pulley device having a coil spring interposed in the upper door is provided, and the pulley device is connected to the lower door, or the coil spring is directly connected to the lower door,
It is also possible to reduce the load when the door is opened by using the spring force.

With the cargo handling door configured as described above, when loading small packages in or out of the interior of the vehicle, only the lower doors need to be slid upward to open, and large packages can be loaded and unloaded. In that case, the upper door may be opened while the lower door is slid to the back of the upper door.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a side surface of a rear cargo handling door 1 of a wagon vehicle. The upper door 2 has an upper end pivotally supported on a vehicle body A by a door hinge 3, and a connecting device at a lower end portion of the upper door 2.
It consists of a lower door 4 connected via 20.

The lower door 4 has a recess 12 formed at the lower end, and is pivotally supported by a pivot shaft 11 provided on the floor of the vehicle body A so that the lower door 4 can be fitted into and removed from the pivot shaft 11. Further, on both sides of the inner surface of the lower door 4, the fourth to sixth
As shown in the figure, the slide rail 5 supported by the support base 8
Are provided parallel to the vertical direction.

The connecting device 20 has a cargo handling door 1 as shown in FIG.
One set is provided on each side of the inner surface of the support member. The details are shown in FIGS. 1 and 3, and the support member 21 is provided on the lower end portion of the upper door 2.
, Links 23 and 24 are provided through pins 25 and 26, and the links
A lateral movement member 22 is provided at the tip of 24 via a pin 27.

Further, the lateral movement member 22 and the support member 21 are connected by pins 28 and 29, and the lateral movement member 22 can be moved laterally along the guide holes 30 and 31. Further, at one end of this lateral movement member 22, as shown in FIGS.
A slide plate 9 having a is fixed by bolts 13.

The guide 10 is the slide rail 5 of the door 4 described above.
Is vertically slidably fitted through a ball 6. Reference numeral 7 is a ball holder.

Further, as shown in FIG. 1, a rod 32a of a hydraulic cylinder 32 is connected to the link 23 via a pin 26,
Actuating the hydraulic cylinder 32 supported by the support member 32b,
As shown in FIG. 2, by pushing down the rod 32a in the direction of arrow C, the lateral movement member 22 is moved in the direction of arrow D, and the lower door is pushed rearward by the pivot 11 as a base point. Has become.

In addition, a slide assist device is provided on both inner surfaces of the upper door 2.
40 are provided.

As shown in FIG. 1, this slide assisting device 40 has one end of a wire rope 47 fixed to a wire rope fitting 44 provided on the upper part of the upper door 2 and the other end of which is a movable pulley 43 and a fixed pulley 45. The movable pulley 43 is supported by the spring mounting member 41 via the coil spring 42 while being fixed to the mounting member 46 at the lower end of the lower door 4 via.

As shown in FIG. 2, when the lower door 4 that has moved laterally backward is slid upward by human power, the pulling force of the coil spring 42 can be used to easily slide even a heavy door. is there.

The cargo handling door 1 thus formed is opened by the procedure shown in FIGS.

First, FIG. 7 shows a closed state of the cargo handling door 1. When the cargo handling door 1 is opened from this state, as shown in FIG. 8, the hydraulic cylinder 32 is operated to move the rod 32a. Pushing down in the direction of arrow C, the links 23 and 24 move the lower door 4 laterally as shown by arrow E.
At this time, the lower end of the lower door 4 is still pivotally supported by the pivot 11.

Next, the lock 50 between the lower door 4 and the pivot shaft 11 is released, and as shown in FIG. 9, the lower door 4 is manually slid in the direction of arrow F and pulled up. By the action of the slide assisting device 40, the lower door 4 can be easily pulled up by human power.

In this way, since the upper door 2 is left as it is and only the lower door 4 is opened, a small load loaded near the lower door 4 in the vehicle can be taken in and out without opening the upper door 2.

Next, when loading or unloading a load larger than the opening of the lower door 4 or a load stacked above, the hydraulic cylinder 32 is further operated from the state shown in FIG. 9 to move the rod 32a to the arrow G direction as shown in FIG. And pushes the door hinge 3 as an axis to flip up the entire cargo handling door 1 in the lateral direction as indicated by an arrow H.

The hydraulic cylinder 32 is supplied with hydraulic oil by a hydraulic circuit (not shown) and can be remotely operated by an operator.

As described above, when loading / unloading a small luggage, only the lower door 4 can be opened by sliding, and when loading / unloading a large luggage, the entire door can be opened, and the entire door is opened. Even at times, the protrusion of the door is less than half the total length of the door, making it easy to load and unload luggage in tight spaces.

In this embodiment, the case where the invention is applied to the rear door of the vehicle has been described, but the same thing can be used for the side portion of the vehicle.

[Effect of device]

As described above, the cargo handling door according to the present invention comprises the upper door pivotally supported at the upper end of the vehicle body opening, and the lower door connected to the lower end of the upper door through the connecting device.
The connecting device lower door has a mechanism for laterally moving to the outer surface of the upper door so as to cover the upper door, and a slide mechanism for guiding the lower door along the outer surface of the upper door. The effect of can be produced.

Since the size of the opening of the door can be changed according to the size of the luggage and the position of the cargo, efficient cargo handling can be performed.

Since the lower door is a slide type, it does not hinder other buildings when opened, and even when the entire door is opened, the part that extends outside the vehicle body is less than about half of the total length of the door, It is possible to handle cargo in close proximity to a warehouse, etc., and it is easy to handle cargo in narrow spaces.

It can be mounted relatively easily even on a vehicle body having a complicated curved shape, and ordinary windows can be installed on both the upper door and the lower door.

[Brief description of drawings]

1 is a side view of a cargo door according to the present invention, which is a sectional view taken along the line II of FIG. 4, FIG. 2 shows a state in which the lower door 4 is laterally moved, and FIG. Exploded view of device 20,
4 is a front view of the door 1, and FIG. 5 is a slide rail 5
FIG. 6 is a sectional view taken along the line VI-VI in FIG. 6, and FIGS. 7 to 10 are explanatory views of the opening procedure. 1 ... cargo handling door, 2 ... upper door, 3 ... door hinge, 4 ... lower door, 5 ... slide rail, 9
...... Slide plate, 11 …… Pivot shaft, 12 …… Recess, 20 …… Connecting device, 21 …… Supporting member, 22 …… Horizontal moving member, 23,24…
… Links, 25-29 …… Pins, 30,31 …… Guide holes, 32…
… Hydraulic cylinder, 40… Slide assist device, 42… Coil spring, 43… Dynamic pulley, 45… Fixed pulley, 47… Wire rope.

Claims (1)

[Scope of utility model registration request] 1. An upper door having an upper end pivotally supported by an opening of a vehicle body, and a lower door connected to a lower end of the upper door via a connecting device, wherein the connecting device lower door is an outer surface of the upper door. A cargo handling door, further comprising a mechanism for laterally moving the upper door so as to cover the upper door, and a slide mechanism for guiding the lower door along an outer surface of the upper door.