JPS6119945Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a folding device that can fold the platform of a vehicle lifter into two by operating a switch button.

Conventionally, the platform form of this type of lifter has been folded in two to improve rearward visibility for the driver, and due to interior height restrictions for models that are installed inside the vehicle, but this type of folding is done manually. It was hot. Therefore, the platform had to be manually unfolded and stowed every time cargo was handled.

This invention is an attempt to improve this point, and was made for the purpose of allowing folding to be performed by operating a switch button.

Hereinafter, this invention will be explained with reference to drawings shown as an example of implementation.
The hydraulic cylinders 5, 5 are disposed opposite to each other on a floor plate 4 close to the entrance 3, and hydraulic cylinders 5, 5 are supported therein, and each is associated with a drive shaft 6, 6 having the same axis. Further, a stay shaft 7 is supported by the main frames 1, 1 so as to extend in parallel directly below the drive shafts 6, 6. The driving arm 8 and the stay arm 9 are arranged as a pair on the inside of the wall corresponding to the main frames 1, 1, and the base ends of the driving arms 8, 8 are attached to the corresponding ends of the drive shafts 6, 6. Further, the base end of the stay arm 9 is attached to the stay shaft 7, and side frames 10, 10 are pivotally supported at the respective tips.

Therefore, when the drive shafts 6, 6 rotate a required angle by the operation of the hydraulic cylinders 5, 5, the driving arms 8, 8 rotate, and the stay arms 9, 9 also rotate in proportion to this arm, and the side frame 10 ,1
0 is maintained in a vertical position and raised and lowered.

A bifold platform 11 is supported on the side frames 10,10. This platform 11 consists of a main platform 11a, a sub-platform 11b, and a flapper 11c.The base end of the main platform 11a is connected to the side frame 10 by hinges 12, 12 provided on both side edges. Pin 13 located at the bottom of 10
When the entire body is tilted backward and unfolded, the stoppers 14, 14, which are spanned by the hinges 12, 12, are attached to the side frame 1.
Place the platform 11 on the lower rear wall of 0,10.
The bearing surface is maintained horizontally. This stopper 14
As shown in FIG. 4, the stay bar 14a may be provided with a stay bar 14a which is bendable at the center and pivoted at both ends to the side frame 10 and the platform 11.

The main platform 11a and the sub-platform 11b have hinges 15 provided on both corresponding edges.
The sub-platform 11b is supported by 15 so as to be expandable upward, and bearing plates 1 are attached to both sides of the tip of the sub-platform 11b.
A support shaft 17 is extended between 6 and 16, and a flap 11c that can be raised freely is supported by a spring 18.

A cover 19 whose front and rear ends are open is provided on one side edge of the main platform 11a, and a support shaft 20 provided above the pin 13 on the inside of the lower part of the side frame 10 on that side, and a sub-platform 11b. The upper edge 19a of the rear end of the cover 19 houses and protects the hydraulic cylinder 22, which is spanned between the support shaft 21 provided near the base of the cover 19.
The sub-platform 11b is brought into contact with the folded sub-platform 11b by the rods 23 of the main platform 11a, and is provided in a support portion that supports the sub-platform 11b in a predetermined position relative to the main platform 11a. Furthermore, the sub-platform 11b and the main platform 11a can be pulled up substantially vertically in a bifold state by pulling the rod 23.

Note that the sub-platform 11b and the flapper 11c are provided to be narrower and therefore lighter than the main platform 11a. 25 is an automatic advance plate that connects the platform 11 and the floor plate 4.

From the above, when the platform 11 is currently folded in two, for example, by operating a switch button, both ends of the hydraulic cylinder 22 are extended, and the platform 11 is initially folded in half, with the pin 14 centered. The main platform 11a is tilted horizontally by rotating the main platform 11a backward. Next, by the action of the hydraulic cylinder 22 which extends further, the sub-platform 11b is deployed rearward around the hinges 15, 15 and supported horizontally. Then, when the driving arms 8, 8 are rotated rearward by the actuation of the hydraulic cylinders 5, 5, the platform 11 is lowered and comes into contact with the road surface. Conversely, if the driving arms 8, 8 are rotated, the platform 1
1 rises. Although not shown in the drawing, Flatspa 1
1c is designed to descend when the platform 11 touches the road surface, and to rise when it leaves the road surface.

Therefore, when the platform 11 comes into contact with the road surface, for example, a cart can be driven onto it, and then the driving arm 8 is moved as described above.
When the stay arm 9 is rotated and the platform 11 is moved away from the road surface, the flapper 11c is raised, and the platform 11 rises while maintaining its horizontal position, and when it matches the floor surface 4 of the vehicle body, it enters the vehicle. Can be transferred. Next, by operating a switch button (not shown), the hydraulic cylinder 22 is actuated and the hand is placed on the platform 1.
The main frames 1 and 1 can be folded in half without touching the main frames 1 and 1, and can be stored in the car in that state.

Since the hydraulic cylinder is protected by the cover, it will not be damaged during cargo handling operations.Especially when the upper edge of the rear end is configured as a support part for the sub-platform, it is effective in reducing cost and weight by allowing the cylinder to double as a member. There is.

[Brief explanation of the drawing]

Figure 1 is a side view of the lifter equipped with this device stored in the vehicle, Figure 2 is a plan view of the platform unfolded, Figure 3 is a side view, and Figure 4. 2 is a partial side view of another embodiment of the horizontal support for the side frame of the platform; FIG. 1... Main frame, 5... Hydraulic cylinder,
6... Drive shaft, 7... Stay shaft, 8... Driving arm, 9... Stay arm, 10...
...Side frame, 11...Platform,
11a...Main platform, 11b...
Subplatform, 19...Cover, 19a
...Bearing part, 22...Hydraulic cylinder.

Claims (1)

[Scope of utility model registration request] The brat form is equipped with a pair of driving arms and stay arms coaxially arranged on the left and right sides, the base end is pivotally supported by a side frame that is supported by these and moves up and down, and the whole is supported so that it can stand up almost vertically from a horizontal position. A main platform and a sub-platform are connected to each other so that they can be folded back and forth with their supporting surfaces corresponding to each other at their corresponding ends, and a cover is provided on one side edge of the upper part of the main platform, and a cover is provided on one side edge of the upper part of the main platform. A hydraulic cylinder is arranged between the side frame and the sub-platform, and when the platform is folded, the sub-platform comes into contact with the upper edge of the rear end of the cover, and the sub-platform 1. A platform folding device for a vehicle lifter, comprising a support portion for supporting the main platform at a predetermined position with respect to the main platform.