JPH05238264A - Rear door opening/closing device for industrial vehicle equipped with cabin - Google Patents

Abstract

PURPOSE:To open and close a rear door by effectively avoiding an article which obstructs the opening and closing of a rear door at the back of a cabin, as for an industrial vehicle equipped with the cabin. CONSTITUTION:The rear door 6 of a cabin 1 is formed to a half divided structure consisting of the upper and lower part doors 7 and 8. The upper pert door 7 is installed in opening and closing. enabled manner through springing-up at the upper edge part of the rear opened port part 2 of the cabin 1 through a hinge 9. The lower part door 8 is installed in vertically movable manner along a guide rail 3b formed in nearly the half on the lower side of the rear opened port part 3 and a guide rail 7d formed on the left and right window frames 7b of the upper part door 7. Then, the lower part door 8 is pulled up to the upper part door 7 side along the guide rails 3b and 7d, and after a double superposed state is formed, the lower part door 8 is sprung up rearward, and the rear door 6 is opened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an industrial vehicle such as a forklift, and more particularly to a rear door opening / closing device for an industrial vehicle having a cabin.

[0002]

2. Description of the Related Art In a conventional general forklift with a cabin, the rear door of the cabin is of a fixed type. Figure 1
0 indicates a conventional fixed type rear door, and the cabin 21
The rear door 22 is directly fixed to the rear pillar 23 by welding, and the window glass 24 for obtaining a rear view is hermetically sealed by a weather strip.

[0003]

However, in the above-described cabin vehicle having the hermetically sealed rear door, since only the side window 26 of the side door 25 for getting on and off can be opened, a large opening area can be obtained as a whole. Not be
There is a difficulty in ventilation in the cabin. In particular, for those without an air conditioner, there is a problem with the poor working environment due to the heat and humidity in the summer.Therefore, although opening and closing of the rear door is requested, it is actually responding to that request. The reality is that there is none. This is the cabin 21
The main cause is that there is an article behind the rear of the vehicle that obstructs the opening and closing of the rear door 22. For example, in the case of a forklift truck that uses LPG as fuel, FIG.
As shown in, the counterweight 2 behind the cabin 21
An LPG cylinder 28 is mounted on the vehicle 7, and this prevents the rear door 22 from opening as shown by the imaginary line.

In view of the above problems, the present invention provides a rear door opening / closing device capable of effectively avoiding and opening the rear door even if there is an article in the rear of the cabin which obstructs the opening and closing of the rear door. Is a technical problem to be solved.

[0005]

In order to solve the above problems, the present invention is configured as follows. That is, the rear door for opening and closing the rear opening formed on the rear surface of the cabin has a two-part structure of an upper door and a lower door, and the upper door can be flipped up rearward with respect to the upper edge of the rear opening of the cabin. On the other hand, the lower door is mounted so as to be vertically movable along a guide rail provided on the lower side of the rear opening and a guide rail provided on the upper door.

[0006]

In the rear door opening / closing device according to the present invention having the above-described structure, the lower door is pulled up along the guide rail of the rear opening and moved to the guide rail side of the upper door so that two doors are provided. After layering,
By pivoting the upper door rearward with its upper end as a fulcrum and flipping it up, the rear door can be largely opened without interfering with the LPG cylinder or the like behind the cabin.

[0007]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 shows the rear door as viewed from the rear of the cabin. As illustrated, an opening frame 3 made of an iron plate, which forms a slightly vertical rectangular rear opening 2 at the rear of the cabin 1.
Are fixed by welding along the inner peripheral edges of the left and right rear pillars 4 and the rear upper bar 5 of the cabin 1. Further, as shown in FIGS. 4 and 6, a plate 3a having a substantially L-shaped cross section is fixed to the outside of the three sides (left and right and lower sides) of the lower half of the opening frame 3 so that a lower door 8 to be described later is provided. A guide rail 3b having a substantially U-shaped cross section is formed.

A rear door 6 for opening and closing the rear opening 3
Is an upper door 7 that is divided into upper and lower parts at a substantially middle portion thereof.
And the lower door 8. Both doors 7 and 8 are made up of rectangular glass 7a and 8a and thin iron plate window frames 7b and 8b arranged on the outer circumference of the glass 7a and 8a. The glass 7a and the glass 8a are connected to each other through weather strips 7c and 8c having a substantially H-shaped cross section as shown in the sectional views of FIGS.

As shown in FIG. 3, the window frame 7b of the upper door 7 has its outer peripheral side folded back inward in a substantially U-shape.
Guide rail 7 for lower door 8 by left and right folding pieces
composing d. In addition, an opening 7e for entering and exiting the lower door is formed on the window frame base side of the lower folding piece, and the inside of the opening 7e is further folded upward in a substantially U-shape to receive the lower door 8 when receiving. It constitutes 7f. That is, the window frame 7b of the upper door 7 has a structure like a door pocket having a revenue port at the lower end.

Thus, the upper door 7 constructed as described above is arranged such that its window frame 7b is superposed on the upper side of the opening frame 3 forming the rear opening 2 from the outside, and The upper portion of the window frame 7a is rotatably attached to the rear tie bar 5 via a hinge 9. That is, the upper door 7 is of an openable and closable type by being flipped up backward. Although not shown, the upper door 7 is designed so that opening and closing operations are reduced by a damper as used in a back door of a passenger car. When the door is closed, it is fixed to a closed position by a door lock, and when opened, it is opened. It is held in the open position by a stopper mechanism.

On the other hand, the lower door 8 having the handle 10 on the lower inner surface of the window frame 8b is fitted into the guide rail 3b of the opening frame 3 and can be pulled up to the guide rail 7d side through the opening 7e of the upper door 7. Has become.
That is, the lower door 8 is the guide rail 3b on the opening frame 3 side.
And a guide rail 7d on the side of the upper door 7 are opened and closed by sliding, and at the time of pulling up, two sheets are stored inside the upper door 7 in a stacked state as shown by a phantom line in FIG. Is becoming In order to avoid interference with the upper door 7 when the lower door 8 is pulled up, the opening frame 3 is provided with a step 3c at a substantially intermediate portion in the vertical direction, which is a boundary portion between the doors 7 and 8, as shown in FIG. Are formed.

The upper door 7 and the lower door 8 attached as described above are bonded (or fitted) to the outer surface side of the opening frame 3 with the surfaces facing the opening frame 3 as shown in the sectional views. ), It is sealed by contacting the weather strip 3d attached. Further, a waterproof seal rubber 7i is attached to the lower side of the window frame 7b of the upper door 7 so as to adhere to the outer surface of the upper side of the window frame 8b of the lower door 8 when the door is closed.

The rear door opening / closing device of this embodiment is constructed as described above, and its opening / closing operation will be described below.
FIG. 1 shows the closed state of the rear door 6, and the upper door 7
Is locked with the upper half of the rear opening 2 closed, and the lower door 8 is held by the guide rail 3b of the opening frame 3 to close the lower half of the rear opening 2. In this closed state, the peripheral portions of the upper and lower doors 7 and 8 are sealed by the weather strip 3d of the opening frame 3, and the upper and lower doors 7 and 8 are sealed.
The overlapping portion (summing portion) of 8 is sealed by a seal rubber 7i to prevent rainwater and the like from entering.

When opening the rear door 6, first the handle 1
When 0 is gripped and the lower door 8 is pulled up along the guide rail 3d of the opening frame 3, the lower door 8 moves to the upper door 7 side while being guided by the guide rail 7d through the opening 7e of the upper door 7, It is free for the opening frame 3. The lower door 8 thus pulled up has its lower edge portion locked to the door receiving portion 7f formed on the lower folded piece of the window frame 7a of the upper door 7, as shown in phantom in FIG. It is thus supported and is stored in a state in which two sheets are stacked on the inner surface of the upper door 7. Thus, the lower half of the door is opened.

Subsequently, the upper door 7 is unlocked and the upper half of the door is opened by pushing the upper door 7 backward and flipping it up. Thus, the entire door is opened and a large opening area is obtained. The open state is held by the stopper mechanism. As described above, according to the present embodiment, the upper and lower lower doors 8 divided into the upper and lower parts are housed in the upper door 7, and then the upper door 7 is flipped up and opened, as shown in FIG. L on the counterweight 11 behind the cabin 1
Even if the PG cylinder 12 or the like is mounted, the rear door 6 can be largely opened without interfering with it.

The present invention is not limited to the embodiment shown in the drawings, but can be modified as needed. For example, in both upper and lower doors 7.8, window frames 7b,
It is possible to open and close the glasses 7a and 8a with respect to 8b and to install a wiper.

[0017]

As described in detail above, according to the present invention,
In an industrial vehicle with a cabin, even if there is an article such as an LPG cylinder that obstructs the opening and closing of the rear door of the cabin behind the cabin, it is possible to avoid this and open and close the article. Therefore, the ventilation in the cabin is enhanced, and the working environment of the occupant can be improved.

[Brief description of drawings]

FIG. 1 is a front view showing a rear door opening / closing device for a cabin according to an embodiment of the present invention as seen from the rear of the cabin.

FIG. 2 is a side view showing an opening / closing state of a forklift with a cabin and a rear door.

FIG. 3 is a perspective view of the upper door as viewed from the inside of the room.

FIG. 4 is a cross-sectional view taken along the line AA of FIG.

5 is a cross-sectional view taken along the line BB of FIG.

FIG. 6 is a sectional view taken along line CC of FIG.

7 is a cross-sectional view taken along line DD of FIG.

8 is a cross-sectional view taken along the line EE of FIG.

FIG. 9 is a schematic side view of a conventional LPG forklift with a cabin.

FIG. 10 is a front view showing a conventional cabin from the rear.

[Explanation of symbols]

 1 ... Cabin 2 ... Rear opening 3b ... Guide rail 4 ... Rear pillar 6 ... Rear door 7 ... Upper door 7d ... Guide rail 8 ... Lower door 9 ... Handle

Claims (1)

[Claims] 1. A rear door for opening and closing a rear opening formed on a rear surface of a cabin has a two-part structure of an upper door and a lower door, and the upper door is rearward with respect to an upper edge portion of the rear opening of the cabin. A rear door opening / closing device for an industrial vehicle with a cabin, wherein the lower door is mounted so as to be flipped up, and is vertically movable along a guide rail provided on the lower side of a rear opening and a guide rail provided on the upper door.