JP3244947U - Back door opening height adjustment mechanism for van-type vehicles - Google Patents

Abstract

[Problem] In the opening mechanism of the flip-up back door of a van-type vehicle, the opening height of the back door of a van-type vehicle is ensured to ensure the opening height for cargo handling operations using a forklift and to facilitate loading operations. Provides an adjustment mechanism.
[Solution] The upper end of a telescopic lift bar 22 is attached to the appropriate position of a back door 21 which is pivoted to the upper part of the rear opening part of a van type vehicle 11, and the upper end of a telescopic lift bar 22 is extended and contracted to the lower part of the rear opening part of the van type vehicle. In addition to attaching the lower end of a lift bar that can be lifted and lowered, the structure is such that the opening height of the back door, which is attached to the upper part of the rear opening of the van type vehicle with a rotation shaft, can be maintained at a height higher than the horizontal position. shall be.
[Selection diagram] Figure 1

Description

The present invention relates to an opening height adjustment mechanism for a back door of a van-type vehicle, which makes it easy to ensure the opening height during cargo handling operations using a forklift.

The present invention relates to an opening height adjustment mechanism for a flip-up back door of a van-type vehicle.
Conventionally, the flip-up back door attached to the rear opening of a passenger/cargo van type vehicle is provided with an extendable lift bar that supports the back door when it is opened. Since the elongation is constant, the back door can always have a constant, almost horizontal opening height. This is not a problem when loading cargo by hand, but since it is not possible to secure the opening height for cargo handling using a forklift, there is a problem that the loading process cannot be carried out satisfactorily. .

As an improvement measure for this, there is an idea described in Utility Model Publication No. 6-42070 (see Patent Document 1). In other words, since the opening height of the flip-up rear door can be adjusted in stages, the opening height of the rear door can be selected according to needs or the surrounding conditions of the parked area, making loading work easier. It is convenient to carry out. Further, it is stated that the adjustment work can be performed extremely easily and quickly since it is only necessary to grasp the relay tube and rotate it.

Publication No. 6-42070

However, what is disclosed in the prior art is that the opening height of the flip-up rear door can be adjusted in stages, so that the opening height of the rear door can be adjusted as needed or according to the surrounding conditions of the parked place. It's just that you can choose.
The problem that this invention aims to solve is that the opening mechanism of the flip-up back door of current van-type vehicles cannot reliably secure the opening height during cargo handling operations using a forklift. I was at the point where I was unable to do any work.

Therefore, the opening height adjustment mechanism of the back door of a van-type vehicle of the present invention is provided by attaching the upper end of a retractable lift bar to the appropriate position of the back door, which is attached to the upper part of the rear opening of the van-type vehicle with a rotation shaft. Attach the lower end of the extendable lifting bar to the lower part of the rear opening of the van type vehicle, and adjust the opening height of the back door, which is attached to the upper part of the rear opening part of the van type vehicle with a rotation shaft, to a level higher than the horizontal position. It is characterized by a structure that allows it to be held at a certain height.

In addition, the opening height adjustment mechanism for the back door of a van-type vehicle according to the present invention is such that the upper end of a telescoping lift bar is attached to the back door which is attached to the upper part of the rear opening part of the van-type vehicle with a rotating shaft. At the same time, the lower end of the extendable lift bar is attached to the lower part of the rear opening of the vehicle, and the opening height of the back door, which is attached to the upper part of the rear opening of the van type vehicle with a rotation shaft, is set to a height higher than the horizontal position. In the opening height adjustment mechanism of the back door of a van-type vehicle,
Another feature of the vehicle is that a recess is formed in the upper part of the rear opening of the van-type vehicle, into which the upper end of the back door, which is pivoted by a rotation shaft, can be fitted easily.

According to the opening height adjustment mechanism of the back door of a van-type vehicle of the first invention, the opening height of the back door, which is attached to the upper part of the rear opening portion of the van-type vehicle by a rotation shaft, is adjusted to a predetermined height above the horizontal position. This has the great advantage of ensuring the opening height for cargo handling operations using a forklift, as well as allowing for extremely smooth loading operations.

According to the opening height adjustment mechanism for a back door of a van type vehicle of the second invention, in the opening height adjustment mechanism for a back door of a van type vehicle in which the opening height of the back door is set to a height higher than the horizontal position, the opening height adjustment mechanism for the back door of a van type vehicle is provided. It is said that a recess is formed in the upper part of the rear opening of a model vehicle into which the upper end of the back door, which is attached with a rotating shaft, can be easily fitted, making it possible to create a very reasonable structure. There are significant benefits.
Furthermore, according to the present invention, the opening height of the flip-up type back door can be adjusted to a predetermined height, so the opening height of the rear door can be set as necessary or according to the surrounding conditions of the place where the vehicle is parked. It is convenient when carrying out loading work.

Figure 1 (A) shows a van-type vehicle that adopts the back door opening height adjustment mechanism of the present invention, and the back door opening height can be adjusted to prevent cargo handling using a forklift or the like. FIG. 1(B) is a schematic perspective view of a state in which the rear door is at its full height, and FIG. FIG. 2 is a schematic perspective view of the back door with the opening height set at a height that does not pose a problem for cargo handling using a forklift or the like, and with the forklift approaching. FIG. 3 is a schematic perspective view of a state where a forklift loaded with luggage is approaching and loading the luggage into a van-type vehicle. Fig. 4 (A) is a schematic perspective view of a van-type vehicle in which a recess into which the upper end of the back door attached via a rotating shaft can be fitted is formed in the upper part of the rear opening part of the van-type vehicle to eliminate water leakage. (B) is an explanatory diagram of the main part thereof. Figure 5 shows a van-type vehicle adopting the back door opening height adjustment mechanism of the present invention, with the back door opening height set at a height that does not pose a problem for cargo handling using a forklift or the like. FIG. FIG. 6 is a diagram showing the opening height of the back door of a conventional van-type vehicle.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1(A) shows a van-type vehicle that employs the back door opening height adjustment mechanism of the present invention. This figure shows the height that there is no problem.
In FIG. 1, a pair of left and right extendable lift bars 22, 22 installed on both sides of the opening of the back door 21 is set to a height that does not pose a problem for cargo handling operations using a forklift, which will be described later. is pushing up. The pair of left and right extendable lift bars 22, 22 are installed so that the upper ends are located on both sides slightly above the rotation axis (24), which will be described later, and the lower ends are located approximately in the middle of the opening of the back door 21. It is preferable that they be installed at a suitable height on both sides of the opening of the back door 21.
The height at which there is no problem for cargo handling operations is a predetermined height above the horizontal position, and for example, as shown in Figure 1 (A), the height should be at least about 45 degrees upward, that is, about half the right angle. It is desirable to do so.
Note that as the extendable and retractable lifting bars 22, 22, a hydraulic cylinder S mainly used for linear motion as shown in FIG. 1(B) is suitable. This hydraulic cylinder S is equipped with a piston pin 23c protruding from one side of a gate valve 23b disposed inside the cylinder body 23a, and the other end of the piston pin 23c protrudes outside the cylinder body 23a to attach a pressing part 23d. It has a similar structure. 23e and 23f are an oil inlet and an oil outlet, respectively. This hydraulic cylinder S is extremely simple and can be used very effectively.

FIG. 2 shows a state in which the opening height of the back door 21 of the van type vehicle 11 of the present invention is set to a height that does not pose any problem for cargo handling using a forklift 31. Then, the forklift 31 is moved forward toward the back door 21 which is in the open state, and the fork 33 attached to the front surface of the front mast 32 is moved forward.

FIG. 3 shows the forklift 31 moved forward toward the back door 21 opened in this way, and the required cargo 34 on the fork 33 attached to the front mast 32 and raised is carried by the forklift. 31 is simply moved forward to be fed into the van-type vehicle 11, and the loading operation is completed very smoothly.
In addition, in FIGS. 2 and 3, the upper ends of a pair of left and right extendable lift bars 22, 22 are attached to the back door 21 which is pivoted on the upper part of the rear opening of the van-type vehicle 11 with a rotation shaft 24. This figure shows that the lower ends of a pair of left and right extendable lifting bars 22, 22 are attached to the lower part of the rear opening of the van-type vehicle 11.

In FIG. 4(A), a recess 25 is formed in the upper part of the rear opening portion of the van-type vehicle 11, into which the upper end of the back door 21, which is pivoted by the rotation shaft 24, can be fitted without difficulty. Therefore, the tip of the back door 21, which is pivoted by the rotation shaft 24, can be fitted in with ease.
That is, as shown in FIG. 4(B), the recess 25 in which the rotation shaft 24 is arranged has a necessary width, and the upper end 21a of the back door 21 pivoted on the rotation shaft 24 can be accommodated in the recess 25. It can be stored without difficulty, and even in the event of rain, water can be easily drained out of the vehicle from the recess 25, so that the inside of the van-type vehicle 11 will not be flooded with water.

FIG. 5 shows a state in which the opening height of the back door 21 of the van type vehicle 11 of the present invention is set to a height that does not pose any problem for cargo handling using a forklift (31).
As mentioned above, the height at which there is no problem in this cargo handling work is a predetermined height above the horizontal position, for example, about 45 degrees upward as shown in FIG. 1 or FIG. 5, that is, about a right angle. It is desirable to minimize the half angle.

Note that FIG. 6 shows a state in which the opening height of the back door 21 of the conventional van-type vehicle 11 is set to a substantially horizontal height, which is difficult for cargo handling using a forklift (31).

According to the present invention, the opening height of the back door of the van type vehicle can be adjusted to a predetermined position, and the opening height of the rear door can be maintained as necessary or according to the surrounding situation of the parked place. This is very convenient when carrying out loading operations.
Moreover, the installation work can be done extremely easily and quickly, as it is only necessary to replace the pair of left and right extendable lifting bars 22, 22 with ones that have this function.

11 Van type vehicle 21 Back door 21a Upper end of back door 22 Extendable lifting bar 23a Cylinder body 23b Gate valve 23c Piston pin 23d Pressing part 23e Oil inlet 23f Oil outlet 24 Rotating shaft 25 Recess 31 Forklift 32 Mast 33 Fork 34 Luggage S Hydraulic cylinder

Claims (2)

Attach the upper end of the extendable lift bar to the appropriate location of the back door, which is pivoted to the upper part of the rear opening of the van-type vehicle, and attach the lower end of the extendable lift bar to the lower part of the rear opening of the van-type vehicle. A back door for a van-type vehicle characterized by having a structure that allows the opening height of the back door, which is attached to the upper part of the rear opening portion of the van-type vehicle by a rotating shaft, to be maintained at a height higher than the horizontal position. Door opening height adjustment mechanism. The upper end of the extendable lift bar is attached to the back door which is pivoted on the upper part of the rear opening of the van-type vehicle, and the lower end of the extendable lift bar is attached to the lower part of the rear opening of the van-type vehicle. , in a back door opening height adjustment mechanism for a van type vehicle, in which the opening height of the back door, which is attached to the upper part of the rear opening portion of the van type vehicle by a rotation shaft, is set to a height higher than the horizontal position,
2. The back of a van-type vehicle according to claim 1, wherein a recess is formed in the upper part of the rear opening portion of the van-type vehicle, into which the upper end of the back door, which is pivoted by a rotation shaft, can be comfortably fitted. Door opening height adjustment mechanism.

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