JPH0523402Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> The present invention relates to a loading platform that is installed on the cargo compartment floor of an automobile and used when loading and unloading cargo.

<Prior Art> When loading and unloading luggage onto the cargo compartment floor of a van-type vehicle, etc., the loading and unloading work is not easy because the luggage does not slide on the floor. In order to solve this problem, a truck loading platform was proposed in Utility Model Application No. 186687/1987.

As shown in Fig. 8, this device has a structure in which a plurality of grooves 5 are formed in parallel on the floor 4 of the truck loading platform, and an air tube 3 with a slippery protective metal material 2 on the upper surface is attached within the groove 5. be.

<Problem to be solved by the invention> In the case of the above conventional structure, when loading and unloading cargo, air is introduced into the air tube 3 to inflate it so as to protrude from the surface of the floor 4, and the cargo 7 is allowed to slide on the protective metal material 7. Moreover, after loading cargo, air is removed from the air tube 3 to flatten the air tube 3 so that the protective metal material 2 is hidden in the groove 5.
Therefore, the following problems arise.

That is, a pressurizing device and piping for introducing air into the air tube 3 are required, making the structure complicated. In addition, the air tube 3 has poor durability, and air leakage occurs due to cracks, etc., and maintenance thereof is troublesome.

Furthermore, if the load is heavy, it may not be possible to lift it with the expansion of the air tube 3, and in that case, the air tube 3 that is in contact with the load will not expand even if the air pressure is increased, and the air tube 3 that is not in contact with the load may be uninflated. air pressure will be supplied, and there is a risk of rupture.

In addition, since the air tube 3 is installed in the groove 5 formed in the floor 4 of the loading platform,
must be modified and cannot be immediately applied to the floor surface of the cargo bed of a general vehicle.

<Means for Solving the Problems> The present invention provides a loading/unloading platform for loading and unloading cargo that solves the above-mentioned problems of the conventional methods. A smooth surface formed in the axial direction of a slippery material such as metal,
In other parts, a large number of rod shafts each having a non-slip surface made of a material with a large coefficient of friction are arranged in parallel at regular intervals, and both ends of the rod shafts are rotatably supported by a frame. The synchronous interlocking rotation mechanism rotates the rod shaft at a rotation angle such that the smooth and non-smooth surfaces face upward, and means for manually or automatically operating the synchronous interlocking rotation mechanism.

<Operation> With the above structure, the present invention rotates so that the smooth surface of the rod shaft becomes the upper surface when loading and unloading cargo, and after loading, rotates the rod shaft so that the non-slip surface faces the bottom surface of the cargo and the floor. Make sure it touches the top surface to prevent slipping.

<Examples> Examples of the present invention will be described below based on the drawings. In FIG. 1, reference numeral 10 denotes a loading platform according to the present invention, which is installed on a floor 11 of a luggage compartment of a van-type vehicle or the like, or is incorporated into the floor 10. This loading platform 1
0 is a large number of parallel rod shafts 12 and this rod shaft 12
Frames 13 and 14 rotatably supported at both ends of
It is constituted by a mechanism that synchronously rotates the plurality of rod shafts 12 at a predetermined angle.

As shown in FIGS. 2 and 3, the rod shaft 12 is made of a slippery shaft material such as metal or synthetic resin as a base material, and has a smooth surface 12 with a part of the outer peripheral surface exposed in the axial direction.
a and other parts are non-slip surfaces 1 formed by embedding a material with a large friction coefficient such as rubber in the shaft material.
2b.

The frames 13 and 14 that rotatably support both ends of the rod shaft 12 are Atsupa frames 13a and 14a.
The upper and lower frames 13b and 14b are divided into upper and lower parts, and are tightened and integrated with screws.

In the synchronously interlocking rotation mechanism of the rod shafts 12, a pinion 16 is formed at one end of each rod shaft 12, and a rack 17 that meshes with the pinion is slidably fitted into the upper frame 13a and the lower frame 13b. Therefore, when one of the many rod shafts 12 arranged in parallel is driven to rotate, the rack 17 is relatively moved in the axial direction, and the other rod shafts 12 are driven to rotate.

For example, as shown in FIG. 1, the single driving rotary rod shaft 12 has a handle 15 connected to the rod shaft 12 at the end of the many rod shafts 12 arranged in parallel, as shown in FIGS. 4 and 5. By rotating the rod 15 by 90 degrees, the other rod shafts 12 are driven to rotate in the same direction at the same rotation angle as described above.

Further, a lock mechanism 18 is provided for positioning at two positions rotated by 90°. As shown in FIG. 6, this lock mechanism 18 has a structure in which a lock pin 19 is pressed by a spring to engage and disengage from a hole 23 formed in the base 22 of the handle 15. Stopper stepped portions 24a and 24b are formed in two directions at 90° from the center, and the stopper 24a abuts a part of the lock mechanism 18, and the stopper stepped portion 24b abuts the lock pin 19 to rotate the handle 15 at 90°. Regulate rotational position. Reference numeral 20 denotes a lock release push rod that passes through the axis of the handle 15, and is used to push the lock pin 19 against the pressing force of the spring and release the lock pin 19 from the hole 23.

The synchronous rotation mechanism of the rod shaft 12 may be of a link type, a chain type, etc. in addition to the pinion 16 and rack 17 mechanism. In addition to the handle 15, the rotational drive mechanism for the rod shaft 12 may be a dial-type manual operating mechanism or an automatic operating mechanism using an actuator such as a motor.

Next, the operation of the present invention will be explained. handle 15
As shown in FIG. 4, the relationship between the two 90° positions and the orientations of the smooth surface 12a and non-smooth surface 12b of the rod shaft 12 is as shown in FIG. When the handle 15 is in the upward position perpendicular to the frame 13 as shown in FIG.
2b is set so that it is located on the upper and lower surfaces.

Therefore, when loading the cargo 21 onto the cargo platform 10, by rotating the handle 15 sideways, all the rod shafts 12 are rotated in a synchronously interlocking manner so that the smooth surfaces 12a face upward as shown in FIG. 7A. and located. Therefore, the handle 15 is oriented horizontally parallel to the frame 13, and the cargo 21 slides on the sliding surface 12a without interfering with the handle 15 and is easily loaded to the back of the cargo platform 10.

After loading this baggage 21, turn the handle 15 to 90°.
Rotate and stand up. As a result, all rod shafts 1
2 are rotated synchronously so that the non-slip surfaces 12a are positioned on the upper and lower surfaces, and as shown in FIG. 7B, contact the upper surface of the floor 11 and the lower surface of the cargo 21 to prevent the cargo 21 from slipping. In addition, the handle 1 that stands up
5 fulfills the role of a stopper even if the luggage 21 moves backward when the vehicle starts. Therefore, in addition to the case where the handle 15 is connected to only the rod shaft 12 at the most side end as shown in the figure, when the handle 15 is connected to a plurality of rod shafts 12 at regular intervals, the handle 15 can be connected to the cargo 21 at multiple points. It is possible to fully fulfill the role of a stopper.

Furthermore, when lowering the load 21 on the loading platform 10, the handle 15 is rotated 90 degrees sideways in the same way as when loading the load 21, so that the sliding surface 12a of the rod shaft 12 faces upward, so that the load 21 can easily slide. It can be taken out.

<Effects of the invention> As described above, according to the present invention, the following special effects are achieved.

Although the loading platform of the present invention can be built into the floor, it can also be set on the floor, so it has the convenience of being able to be used immediately without modifying a conventional vehicle.

Further, the means for making the cargo slippery or difficult to slip is to form a smooth surface and a non-slip surface part on the rod shaft, and to change the position of the smooth surface and the non-slip surface by rotating multiple rod shafts synchronously and interlockingly. Because of this structure, there is no problem of the rod shaft deforming due to the weight of the load unlike the conventional air tube system, and even with heavy loads,
As shown in Fig. 7, by making the height of the frame smaller than the diameter of the rod shaft, all of the weight is carried by the floor via the rod shaft, and the cargo can be loaded in a stable state.

Furthermore, the present invention eliminates the need for a pressurizing device or piping for feeding air into the air tube as in the past, making it possible to provide a simple structure and a durable loading platform.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the loading platform of the present invention, and Figure 2 is a perspective view of the loading platform of the present invention.
3 is an exploded perspective view of the section shown in the direction of the arrow in FIG. 1, FIG. 4 is a perspective view of the section shown in the direction of the arrow in FIG. 6 is a sectional view taken along the line of FIG. 4, FIGS. 7A and 7B are explanatory views of the operation of the present invention, and FIG. 8 is a sectional view of the conventional device. 10... Loading platform, 11... Floor, 12... Bar shaft, 12a... Smooth surface, 12b... Non-slip surface, 13,
14...Frame, 15...Handle, 16...
Pinion, 17...easy.

Claims (1)

[Scope of utility model registration request] A part of the outer peripheral surface is made of a slippery material such as metal, which is the shaft material, and is formed in the axial direction as a smooth surface, and the other part is made of a non-slip surface that is made of a material with a large coefficient of friction on the shaft material. A synchronous interlocking rotation mechanism in which a large number of rod shafts are arranged in parallel at regular intervals, both ends of which are rotatably supported by a frame, and the plurality of rod shafts are rotated at a rotation angle such that smooth surfaces and non-slip surfaces face upward. and,
A vehicle loading platform comprising means for manually or automatically operating the synchronous interlocking rotation mechanism.