JP2004009784A - Goods loading and unloading device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive loading and unloading device for a vehicle, wherein heavy loads are easily and safely loaded and unloaded into/from a loading space of the vehicle. <P>SOLUTION: A pair of guide rails 2 which extend in the front/rear direction on the right and left sides of a fixed frame 1 fitted in the loading space in which a horizontal part 4, a rising inclination part 5, and a lowering inclination part 6 are sequentially formed at a portion in the loading space from a front edge side, and in which a lowering part 7 lowering almost to the ground is formed at a rear portion in the loading space are provided. While the front end of a movable platform 3 accommodated in the loading space is being guided by the guide rail 2, a rear edge side is supported by a supporting roller 10 to move to the rear portion of the loading space, the rear end is inclined downward to be grounded at the rear part of the loading space, and then the front end is guided by the lowering part 7 to be lowered almost to the ground. Thus, the heavy loads are easily and safely loaded and unloaded onto/from the movable platform 3 which is moved on to the ground at the rear part of the loading space. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle luggage unloading apparatus for unloading luggage by moving a movable platform stored on a luggage platform of a vehicle to the ground behind the luggage platform.
[0002]
[Prior art]
When loading or unloading heavy loads such as motorcycles on the loading platform of a truck or other vehicle, insert a plate at an angle between the rear end of the loading platform and the ground, and unload and load along the plate. ing. However, with this method, heavy loads that cannot be rolled on a plate material, such as a motorcycle that fails and does not rotate, cannot be unloaded onto a carrier.
[0003]
On the other hand, some trucks and the like are equipped with a hoist crane and a lifter for loading and unloading such heavy loads. Hoist cranes are relatively inexpensive, but require a slinging operation, so that it is troublesome to lift a load having a complicated shape such as a motorcycle, and the slinging operator may be injured. Further, the lifter requires a hydraulic cylinder, an electric arm, and the like for elevating and lowering, rotating, and the like, so that the apparatus becomes very expensive.
[0004]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION It is an object of the present invention to provide an inexpensive vehicle luggage unloading device that can easily and safely load heavy luggage on a cargo bed of a vehicle.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a vehicle luggage unloading device of the present invention includes a fixed frame provided with a guide rail attached to a vehicle bed and extending in a front-rear direction from above the bed to substantially the ground behind the bed, And a movable platform on which the luggage is loaded and unloaded from the platform to the ground behind the platform guided by the guide rails. A horizontal part that is substantially horizontal, a rising inclined part that inclines upward to the rear side, and a descending inclined part that inclines downward to the rear side are sequentially formed. A descending part which descends substantially to the ground is formed, a guided part guided by each part of these guide rails is provided at a front end side of the movable platform, and a movable part is provided at a rear end part of the fixed frame. A support roller is provided that is rotatably contacted with the lower surface of the platform and supports the movable platform movably in the front-rear direction. The support roller supports the rear end of the movable platform stored on the loading platform, and The guided portion on the front end side is sequentially guided by the horizontal portion of the guide rail, and the movable platform is moved substantially horizontally backward on the loading platform. The rear end of the movable platform is inclined downward, and then guided obliquely downward by the descending inclined portion, the rear end of the movable platform is brought into contact with the rear of the loading platform, and then moved rearward. A configuration is adopted in which the front end side of the movable platform, which is guided downward and the rear end side of which is grounded, is lowered substantially to the ground.
[0006]
That is, on the fixed frame attached to the loading platform, extending in the front-rear direction of the loading platform, a horizontal portion, a rising inclined portion, and a descending inclined portion are sequentially formed from the front end side on the portion on the loading platform, and descend substantially to the ground at a portion behind the loading platform. A guide rail with a descending part is provided, and the movable platform housed on the carrier is supported by the support rollers provided at the rear end of the fixed frame while the front end of the movable platform is guided by the guide rail. After moving the back end to the rear of the loading platform and touching the rear end side to the back of the loading platform, the front end side is guided by the descending part of the guide rail and lowered to the ground substantially, so that it is movable to the ground behind this loading platform Heavy loads can be easily and safely unloaded on the platform.
[0007]
By providing a pair of the guide rails on the left and right sides of the movable platform, the movable platform can be smoothly moved back and forth without tilting or swinging in the lateral direction of the movable platform.
[0008]
By attaching a wheel that is in contact with the grounded ground on the rear end side of the movable platform, the movable platform whose rear end is grounded can be smoothly moved back and forth.
[0009]
By providing a driving means for driving at least the forward movement of the movable platform moving in the front-rear direction, a heavy movable platform loaded with luggage can be easily moved to the loading platform. As a means for driving only the movement in the forward direction, for example, a method in which a rope, a wire, or the like is connected to the front end of the movable platform, and this is wound up in front of the loading platform can be adopted. Of course, a driving means for driving the movement in both the front and rear directions may be provided.
[0010]
A chain is laid on the drive means along the guide rail, a sprocket is attached to a front end side of the movable platform, and the sprocket is rotated by being engaged with the chain to move the movable platform in the front-rear direction. With this configuration, it is possible to drive the movable platform in both front and rear directions with an inexpensive configuration.
[0011]
By making the descending portion of the guide rail foldable or detachable, and storing the guide rail on the loading platform, the vehicle can be safely driven without any indication of protruding from the loading platform.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, this vehicle luggage unloading device extends on the left and right sides of a rectangular fixed frame 1 attached to the bed of the vehicle A in a front-rear direction from above the bed to almost the ground behind the bed. A pair of guide rails 2 is provided, and a rectangular movable platform 3 housed on the loading platform is guided by a pair of left and right guide rails 2 to move to the ground behind the loading platform, and is moved to the ground. In addition, cargo such as motorcycles is unloaded.
[0013]
The pair of guide rails 2 include a generally horizontal portion 4, a rising inclined portion 5 inclined upward to the rear side, and a descending inclined portion 6 inclined downward to the rear side from the front end side on the loading platform. A descending portion 7 which is sequentially formed and which descends substantially to the ground is formed in a portion behind the loading platform connected to the portion on the loading platform. The movable platform 3 is guided by the guide rails 2 by rollers 9 as guided parts attached to the left and right ends of a rotating shaft 8 provided at the front end side. When moving on the loading platform, the rear end side is fixed to a fixed frame. 1 is supported by rotatable support rollers 10 attached to the left and right ends of the rear end. Further, as described later, after the rear end of the movable platform 3 is grounded, the movable platform 3 moves by rotating the wheels 11 attached to the left and right of the rear end to the ground.
[0014]
As shown in FIGS. 3A and 3B, the pair of guide rails 2 are formed in a C-shaped cross section facing inward from each other, and are attached to a chain 12 laid along an upper flange. The sprockets 13 attached to both ends are engaged with each other. The rotating shaft 8 is driven to rotate via a chain 15 and a sprocket 16 by a motor 14 attached to the front end of the movable platform 3.
[0015]
The left and right rollers 9 are rotatably mounted on the rotating shaft 8 via bearings (not shown), and are guided by lower flanges of each guide rail 2. Accordingly, the movable platform 3 is moved in the front-rear direction by the engagement of the sprocket 13 and the chain 12 which are driven to rotate, while the front end side is guided by the guide rail 2 by the rollers 9. Note that the chain 12 that meshes with the sprocket 13 may be laid along the lower flange of the guide rail 2, and the roller 9 may be guided by the upper flange.
[0016]
As shown in FIG. 4, the descending portion 7 of the guide rail 2 is formed separately and attached to the rear end of the descending inclined portion 6 by a hinge 17. When unloading cargo on the movable platform 3, as shown in FIG. 4A, the descending portion 7 is fitted with a notch 18 formed on an end face thereof on a shaft of a thumbscrew 19, and is inserted into the descending inclined portion 6. It is tightened and fixed so that it is connected. When the vehicle A travels after the loading / unloading of cargo is finished, as shown in FIG. 4 (b), the descending portion 7 loosens the thumbscrew 19 and is turned upward by the hinge 17 to be stored on the loading platform. The clamp member 21 attached to the outer side surface of the descending inclined portion 6 is hung on the hook member 20 attached to the outer side surface thereof, and tightened and fixed.
[0017]
Hereinafter, a procedure for moving the movable platform 3 stored on the carrier to the ground behind the carrier as shown by the solid line in FIG. 1 will be described as shown by the dashed line in FIG.
[0018]
By rotating the sprocket 13 attached to the rotating shaft 8 by the motor 14, as shown in FIG. 5, the movable platform 3 guides the roller 9 on the front end side by the horizontal portion 4 of the guide rail 2, and While being supported by the support roller 10 at the end side, it moves substantially horizontally to the rear of the carrier. As shown in FIG. 6, when the roller 9 enters the rising inclined portion 5 of the guide rail 2, the movable platform 3, whose rear end is supported by the support roller 10, gradually raises its front end and tilts its rear end downward. I do.
[0019]
As shown in FIG. 7, when the roller 9 enters the descending inclined portion 6 of the guide rail 2, the movable platform 3 whose rear end side is inclined downward moves rearward while maintaining a substantially constant inclination angle, The wheel 11 attached to the side is grounded on the ground behind the loading platform. When the wheels 11 are grounded, the movable platform 3 is lifted off the support rollers 10 to move the wheels 11 in contact with the ground and move further rearward.
[0020]
Thereafter, as shown in FIG. 8, when the roller 9 enters the descending portion 7 of the guide rail 2, the front end side of the movable platform 3 descends, and as shown by a solid line in FIG. To the ground, and the cargo is unloaded. The movable platform 3 on which the load is unloaded is stored on the bed by the motor 14 by rotating the sprocket 13 in the reverse direction, in the reverse of the above-described movement procedure.
[0021]
In the embodiment described above, the guide rails are provided on the fixed frame in a pair on the left and right, but the number of guide rails may be one. In this case, one guide rail is provided so as to extend in the front-rear direction at the center of the fixed frame, and the slit portion that allows the fitting of the upwardly inclined portion and the downwardly inclined portion of the guide rail that protrudes upward is movable. It may be provided in the center of the platform.
[0022]
Further, the guide rail is not limited to the lateral C-shaped cross section as in the embodiment, but may be an upward C-shaped depending on the form of a guided portion such as a roller provided on the front end side of the movable platform. A cross section, a T-shaped cross section, an I-shaped cross section, or the like can also be used.
[0023]
Further, the means for driving the movement of the movable platform is not limited to the engagement between the sprocket and the chain in the embodiment.For example, when driving only the forward movement of the movable platform, the front end of the movable platform may be used. It is also possible to adopt a method in which a rope, a wire, or the like is connected to the side, and this is wound up in front of the carrier.
[0024]
【The invention's effect】
As described above, the vehicle luggage unloading device of the present invention has a fixed frame attached to a loading platform, which extends in the front-rear direction of the loading platform, and has a horizontal portion, a rising inclined portion, and a descending inclined portion from the front end side on the portion of the loading platform. A guide rail formed sequentially and provided with a descending portion that descends to the ground substantially at the rear portion of the loading platform is provided, and the movable platform stored on the loading platform is guided at the front end side by the guide rail, and the rear end side is guided. After being supported by the support rollers provided at the rear end of the fixed frame and moved to the rear of the carrier, the rear end is grounded to the rear of the carrier, and the front end is guided by the descending part of the guide rail and descends to the ground. Because of this, it is possible to easily and safely load heavy loads on the movable platform that has been moved to the ground behind the loading platform, and it is possible to reduce the cost of the load unloading device.
[0025]
Further, by providing a driving means for driving at least the forward movement of the movable platform moving in the front-rear direction, a heavy movable platform loaded with luggage can be easily moved onto the loading platform. Of course, if a driving means for driving the movement in both the front and rear directions is provided, the movable platform can be more easily moved backward.
[0026]
Further, the descending portion of the guide rail is made foldable or detachable, and is stored on the carrier, so that the vehicle can be safely driven without any indication of protruding from the carrier.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a vehicle luggage unloading apparatus. FIG. 2 is a plan view of FIG. 1. FIG. 3 is a front view showing an enlarged main part of FIG. FIG. 4A is an enlarged front view showing a lowering portion of the guide rail in FIG. 1; FIG. 4B is a front view showing a state in which the lowering portion of a is folded; FIG. 6 is a front view showing a state where the movable platform of FIG. 1 is moved. FIG. 6 is a front view showing a state where the movable platform of FIG. 1 is moved. FIG. 7 is a front view showing a state where the movable platform of FIG. Front view showing a state in which the movable platform of FIG. 1 is moved.
DESCRIPTION OF SYMBOLS 1 Fixed frame 2 Guide rail 3 Movable platform 4 Horizontal part 5 Upslope section 6 Downslope section 7 Descending section 8 Rotating shaft 9 Roller 10 Support roller 11 Wheels 12 Chain 13 Sprocket 14 Motor 15 Chain 16 Sprocket 17 Hinge 18 Notch 19 Butterfly Screw 20 Hook member 21 Clamp member

Claims (6)

A fixed frame provided with a guide rail attached to the vehicle's bed and extending in the front-rear direction from above the bed to substantially the ground behind the bed, and stored on the bed and guided by the guide rail from the bed to the ground behind the bed. A movable platform that moves in the front-rear direction and on which the cargo is loaded and unloaded, and a portion of the guide rail on the loading platform, a horizontal portion that is generally horizontal from the front end, a rising inclined portion that is inclined upward to the rear side, and a rear portion. A descending inclined portion that inclines downward to the side is formed sequentially, and a descending portion that descends to the ground substantially is formed at a portion behind the carrier of the guide rail that is continuous with the portion on the carrier, and guides each portion of these guide rails. The movable platform is provided at the front end side of the movable platform, and is rotatably contacted with the rear end of the fixed frame on the lower surface side of the movable platform, thereby moving the movable platform forward and rearward. Provided is a supporting roller for movably supporting the movable platform housed on the loading platform with the supporting roller, while sequentially supporting the guided portion on the front end side with the horizontal portion of the guide rail. Guiding, moving the movable platform substantially horizontally rearward on the loading platform, and then guiding the movable platform obliquely upward at the ascending ramp, inclining the rear end side of the movable platform downward, and then descending the descending ramp. The movable platform is guided obliquely downward, the rear end side of the movable platform is grounded behind the loading platform, and then moved rearward.Finally, the movable platform is guided downward by the descending portion and the rear end side is grounded. Luggage unloading device for vehicles that lowers the front end to the ground. The vehicle load unloading device according to claim 1, wherein the guide rails are provided as a pair on left and right sides of the movable platform. The vehicle load unloading device according to claim 1 or 2, further comprising a wheel attached to a rear end of the movable platform, the wheel being in contact with a grounded ground. 4. The vehicle luggage unloading device according to claim 1, further comprising a driving unit that drives at least a forward movement of the movable platform that moves in the front-rear direction. The driving means lays a chain along the guide rail, attaches a sprocket to the front end side of the movable platform, meshes the sprocket with the chain, rotates and drives the movable platform in the front-rear direction. The vehicle luggage unloading device according to claim 4, wherein: 6. The vehicle luggage unloading device according to claim 1, wherein the descending portion of the guide rail is foldable or detachable, and is stored on the cargo bed.

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