JPS6340347Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a tailgate support device for a cargo handling vehicle.

[Prior art] Conventionally, a cargo handling vehicle uses the space at the bottom of the cargo box to store the tailgate, pulls out the tailgate from the stored position, and secures the tailgate to a receiving bracket integrally provided on the slider. is publicly known (see Utility Model Publication No. 54-26563).

In this case, when pulling out the tailgate, there is a risk that the gate will be pulled far backwards past the metal holder and fall off, and the sliding friction on the contact surface will increase, making it impossible to pull out the tailgate smoothly. It was hot.

[Purpose of invention]

The present invention was developed in view of the above points, and by constantly moving the end of the tailgate via guide rollers, it is easy to pull out the tailgate to the working position and push it into the storage position during cargo handling operations. The present invention provides a tailgate support device.

〔Example〕

Hereinafter, an embodiment of the present invention will be explained with reference to the drawings. Reference numeral 1 denotes a cargo box of a cargo handling vehicle, and a double door (not shown) is disposed at the rear opening of the cargo box 1 so that it can be opened and closed. The post 2 is hollow and has a vertical groove 3 on its rear surface. Reference numeral 4 denotes a slider that is fitted into the post 2 and moves up and down by being connected to a drive mechanism (not shown). At the lower end of the slider 4 is a contact member 1 whose protrusion amount can be changed downward.
7, and an extension member 7 that protrudes rearward beyond the vertical groove 3 provided in the post 2.

A bracket 8 is rotatably supported on the extension member 7 via a hinge mechanism 6, which will be described later, about a vertical axis. The roller is attached to the shaft.

In addition, a tailgate 5 is provided in the lower space of the cargo box 1.
In order to form a housing portion, guide rails 15 are provided in which U-shaped members into which both side edges of the tailgate 5 are fitted are opposed.

A rear roller 16 is rotatably mounted near the entrance of the guide rail 15 in a state slightly protruding from the upper surface of the lower wall of the guide rail 15.
A stopper device 18 for holding the tailgate 5 in the retracted position is provided near the end thereof.

The stopper device 18 is connected to the tailgate 5 and the stopper device 1 by pulling the operating rod 19.
The binding state with 8 is now released.

By the way, the relationship among the extension member 7, the hinge mechanism 6, and the bracket 8 will be explained based on FIG. has been
The hinge 6a is fixed to the extension member 7, while the hinge 6b is fixed to the receiving metal fitting 8 by sandwiching the hinge 6a from above and below.

The head of the pivot 10 is prevented from rotating and is integrated with the hinge 6b, so that the head of the pivot 10 is prevented from rotating.
The pivot 10 also rotates together.

A locking device 11 consisting of a stopper and a spring is provided at the center of the hinge 6a, and when the receiving metal fitting 8 is rotated by the restraining force of the spring, the receiving metal fitting 8 is moved between the rear position (solid line in FIG. 4) and the post 2. It is constructed so that it can be automatically locked into the rest position (dashed line in Figure 4) when it is folded laterally.

On the other hand, a front roller 12 that can freely roll on the aforementioned guide rail 15 is pivotally attached to the front end of the tailgate 5, and guide members 13 are provided on both sides of the front roller 12. This guide member 13 includes a sliding portion 13a that is guided by the guide roller 9 when the tailgate 5 is pulled out from the storage position to the cargo handling position, and a locking portion that engages with the guide roller 9 at the end of the drawer. 13b, and in the embodiment, when pushing the tailgate 5 from the cargo handling position to the storage position, the guide rail 15 cooperates with the front roller 12.
A second sliding portion 14 guided by the rear roller 16 is further formed.

When the guide roller 9 is engaged with the locking portion 13b, the front end of the tailgate 5 is in contact with the contact member 1.
7, the tailgate 5 is maintained in a horizontal state and is automatically placed in the cargo handling position.

[Explanation of operation]

Next, the operation of the embodiment will be described. First, when the receiving bracket 8 in the standby position (chain line in FIG. 4) is rotated toward the rear position (solid line in FIG. 4), the lock device 1
From there, the operating rod 19 is operated to release the stopper device 18, and then the tailgate 5, which is held in the stored state, is pulled out rearward.

At this time, the front part of the tailgate 5 is
2 is on the guide rail 15, and the rear part is on the guide member 1.
3, the second sliding portions 14 are supported by the rear rollers 16 and are pulled out halfway. When the tip of the sliding portion 13a of the guide member 13 reaches the guide roller 9 of the receiving fitting 8, the guide roller 9
supports the rear portion of the tailgate 5 via the sliding portion 13a.

By further pulling out the tailgate 5 in this state, the locking portion 13b of the guide member 13 comes into contact with the guide roller, and the tailgate 5 is supported together with the slider 4 in the horizontal cargo handling position. Ru. By activating a drive mechanism (not shown), cargo can be loaded and unloaded between the ground and the floor of the cargo box.

Next, in order to return the tailgate 5 in the working position to the retracted state, it is sufficient to perform the reverse procedure as described above. For example, after storing the tailgate in the guide rail 15, the receiving bracket 8 is attached to the side of the post 2. Just store it in the standby position.

[Effect of idea]

As described above, according to the present invention, the tailgate can be easily moved from the storage position to the cargo handling position or from the cargo handling position to the storage position.

In addition, when the bracket is configured to be foldable and rotatable, there is no protrusion at the rear end of the vehicle when the vehicle is running.
In addition to improving safety, by forming the second sliding portion on the guide member, the front and rear of the tailgate are always supported and the tailgate can be moved more easily.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, and FIG. 1 is a rear side view of the device of the present invention installed, and FIG.
FIG. 3 is an enlarged partial view of a main part, and FIG. 4 is a plan view showing a section BB of the same part. 1... Packing box, 2... Post, 3... Vertical groove, 4...
...Slider, 5...Tailgate, 6...Hinge mechanism, 8...Bracket, 9...Guide roller, 13...
...Guide member.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Posts are installed on both sides of the rear of the cargo box to guide sliders that horizontally support the tailgate in a vertically movable manner, and guide rails are provided at the bottom of the cargo box to store the tailgate. In the cargo handling vehicle, a rotatable guide roller is pivotally attached to the slider, and a guide member having a locking portion is disposed on the tailgate, and the tailgate is moved from a storage position to an operating position. A tailgate support device for a cargo handling vehicle, characterized in that a guide member can be guided along a guide roller to a locking portion thereof. (2) The tailgate of a cargo handling vehicle according to claim 1, wherein the guide roller is pivotally connected to the lower end of a receiving bracket rotatably connected to the lower end of the slider via a hinge mechanism. Support device. (3) A rear roller is disposed near the entrance of the guide rail, and the guide roller and the rear roller are spaced apart in the width direction so that the second sliding portion of the guide member is guided by the rear roller. A tailgate support device for a cargo handling vehicle according to claim 1, which is arranged as a utility model.