JP2003252106A - Cargo receiving space lifting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cargo receiving space lifting device for reducing a longitudinal directional housing space while securing the aboveground height, and relieving restriction when installed in a small vehicle. <P>SOLUTION: In this cargo receiving space lifting device 1, a cargo receiving space 5 is liftably arranged along a pair of left and right columns 3 erected in a cargo box 2 of a vehicle, and is arranged so as to be housed under the cargo box 2. A lifting cylinder being a lifting driving source of the cargo receiving space is incorporated into a cross member 8 connected to a lower part of the pair of left and right columns 3, and a tail lamp 91 and a number plate 92 are embedded and arranged in a rear surface part. The cargo receiving space 5 is at least longitudinally freely doubly folded by a base end side cargo receiving member 51 and a tip side cargo receiving member 52, and the cargo receiving space 5 is constituted so as to be housed by horizontally moving still in a folding-up state. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for lifting and lowering a cargo receiving stand which is provided with a pair of right and left columns vertically arranged on a cargo box so as to be able to move up and down.

[0002]

2. Description of the Related Art FIG. 8 shows a conventional loading platform raising / lowering device.

The loading platform elevating device a comprises a pair of left and right columns c standing upright at the rear end of a luggage box b of a vehicle, sliders (not shown) inserted in the columns c so as to move up and down, and left and right columns. The load receiving base e supported on the lower end of the slider via a bracket d, and the lifting cylinder g connected to each slider via a wire f.

The elevating cylinder g is arranged in a cross member h arranged between the columns c, and the elevating cylinder g extends and retracts to pull the wire f to move the slider up and down. A load receiving stand e connected to the slider via a bracket is moved up and down between the ground and the floor of the load box b.

[0005] Then, the load receiving platform e which moves up and down in this way
Is slidably supported in the horizontal direction with respect to the slider, and is configured to be stored in the storage position below the rear part of the luggage box b by this sliding operation.

[0006]

However, in the above-described conventional loading platform elevating apparatus mounted on a vehicle, it is necessary to mount a tail lamp i and a license plate j on the rear portion of the vehicle. j was provided below the cross member h due to its structure.

Therefore, since the tail lamp i and the license plate j are projected downward from the cross member h, the ground height of the load receiving base e is increased in order to avoid interference with the load receiving base e stored below the rear portion of the load box b. There was a problem of becoming low.

[0008] Further, in the case of storing one cargo receiving stand e as it is, since a storage front and rear space corresponding to that amount is required below the rear part of the packing box b, a front and rear storage space such as a small truck. Was restricted to mounting on smaller vehicles. When the vehicle is mounted on a vehicle having a small front-rear storage space, the front-rear storage space can be reduced by folding the load receiving base e back and forth, for example, in two. However, as described above, since the tail lamp i and the license plate j are projected downward from the cross member h, if the load receiving base e is folded in two, the ground height is further lowered, and there is a large risk of interference during traveling, After all, there was a problem that it could not be attached to such a vehicle.

The present invention has been made in view of the above problems, and an object of the present invention is to secure a ground height and to reduce a storage space in the front-rear direction. An object of the present invention is to provide a load receiving platform elevating device that can alleviate restrictions when mounting.

[0010]

According to a first aspect of the present invention, there is provided a lifting and lowering device for a load carrier, wherein the load carrier is provided so as to be vertically movable along a pair of right and left columns that are vertically installed in a load container of a vehicle. In the load receiving platform raising / lowering device provided so as to be retractable below, the cross member connected to the lower side of the pair of left and right columns has an elevator cylinder as an elevator drive source for the load receiving platform, and a tail lamp on its rear surface. And the license plate is embedded.

According to a second aspect of the present invention, there is provided a device for raising and lowering a loading platform.
In a load receiving platform elevating device that is provided so as to be able to move up and down along a pair of left and right columns that are erected on a load box of a vehicle, and that is provided below the load box so as to be retractable, the load receiving base is at least forward and backward. It is made foldable in two and is configured to be stored by horizontally moving the load receiving tray in a folded state.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an apparatus for raising and lowering a load receiving base according to the present invention.

The loading platform raising / lowering device 1 includes a pair of left and right columns 3 standing upright at the rear end of a cargo box 2 of a vehicle, and sliders 4 (see FIG. 2) inserted in the columns 3 so as to be vertically movable. , A load receiving base 5 supported on the lower ends of the left and right sliders 4, and an elevating cylinder 7 connected to each slider 4 via wires 6, respectively.

Specifically, the column 3 is a hollow elongated body having a rectangular cross section, and a slider 4 is arranged inside the column 3.

The slider 4 is provided with a plurality of elevating rollers (not shown) at its upper end and in the middle thereof, and these elevating rollers make it possible to smoothly move the slider 4 up and down.

One end of each wire 6 is fixed to the upper ends of the left and right sliders 4, respectively. The wire 6 is guided upward from the slider 4, folded back downward by a sheave 33 provided on the upper portion of the support column 3, guided downward at the front side, and then sheave (not shown) from the lower portion of the front support column 3. It is guided to the elevating cylinder 7 via and the other end is appropriately fixed.

As shown in FIGS. 1 and 2, the elevating cylinder 7 is arranged in the front part of the cross member 8 arranged between the columns 3, and the elongating and lowering operation of the elevating cylinder 7 causes the elevating cylinder 7 to move as described above. Feed out the arranged wire 6 to the column 3,
Alternatively, the slider 4 is moved up and down by pulling it from the column 3.

Therefore, as described above, by raising and lowering the slider 4 by the raising and lowering cylinder 7, the load receiving base 5 connected to the slider 4 can be raised and lowered between the ground and the floor surface of the luggage box 2. it can.

On the other hand, a tail lamp 91 and a license plate 92 are embedded in the rear surface of the cross member 8 as shown in FIG. Specifically, the cross member 8 includes a front housing portion 81 that houses the lifting cylinder 7, a tail lamp 91, and a license plate 9.
A partition wall 83 divides the rear housing portion 82 for housing 2 into about half.

The rear accommodating portion 82 is formed by notching the rear surface of the existing cross member 8 and partitioning it with a partition wall 83 from the front portion accommodating the elevating cylinder 7, and as shown in FIG. Tail lamps 91 are arranged on both sides of the housing portion 82, and a license plate 92 is arranged in the center thereof. In other words, the rear space in the cross member 8 which has been used as a space but has not been used in the past is effectively used. As a result, the tail lamp 91 and the license plate 92, which are conventionally provided at the bottom of the cross member 8, are
The height positions of the tail lamp 91 and the license plate 92 can be secured high by the amount accommodated inside.

The partition wall 83 is not always necessary, and a structure in which a reinforcing member or the like is provided in the cross member 8 and the partition wall 83 is eliminated may be used if necessary.

The load receiving base 5 is provided with a front end side load receiving member 51 and a front end side load receiving member 52 which are divided into front and rear parts, and the base end side load receiving member 51 and the front end side load receiving member 52 are connected via a hinge 53. The front end side load receiving member 52 is rotatably connected to the upper surface of the base end side load receiving member 51 and is foldable in two.

As shown in FIGS. 4 and 5, the base end side load receiving member 51 is provided on both sides of the load receiving main body portion 54 and the load receiving main body portion 54 on which the load is placed on the upper surface thereof together with the tip end side load receiving member 52. The support part 55 supported by the slider 4 is connected via a connecting member 56, and the mounting structure of the load receiving main body part 54 and the support part 55 is as follows.

The connecting member 56 is a flat plate-shaped fixing portion 56a interposed between both sides of the load receiving main body portion 54 and the support portion 55.
And a hooking portion 56b formed in a downward U shape over the entire upper end of the fixing portion 56a. Then, the load receiving main body portion 54 and the connecting member 56 (fixing portion 56a)
And are firmly connected by means such as welding.

Therefore, in the state where the hook portion 56b is fitted and supported on the upper end portion of the support portion 55 from above, the load receiving main body portion 5 is formed.
4 and the support portion 55 via the fixing portion 56a
By consolidating an appropriate number of places by 7,
And the support portion 55 are integrally fixed to each other to fix the base end side load receiving member 51.
Are configured.

That is, both sides of the load receiving main body portion 54 and the supporting portion 55 are fixed by the fixing bolts 57 via the connecting member 56 which holds the upper end portion of the supporting portion 55 by the hooking portion 56b and supports it. Due to the action of the connecting member 56, sufficient fixing strength can be obtained even if the number of fixing points by the fixing bolts 57 is reduced.

By constructing the base end side load receiving member 51 in this way, even if the load receiving main body portion 54 and the connecting member 56 are made of aluminum and the support portion 55 is made of steel, the load receiving main body portion 5 is formed.
4 and the support part 55 can be integrated with sufficient strength. Moreover, since the supporting portion 55, which is the connecting portion with the slider 4 and which is most loaded, is made of steel, the load receiving base 5
It is possible to sufficiently secure the rigidity strength and to reduce the weight. And the tip side load receiving member 52
By using aluminum as in the case of the load receiving main body 54, the weight of the load receiving base 5 as a whole can be further reduced.

As shown in FIGS. 2 and 6, the support portion 55 has a guide groove 55a formed on the outer surface in the front-rear direction, while the bracket 41 projects rearward from the column 3 from the lower end portion of each slider 4. It is arranged and this bracket 41
A first guide roller 42 provided at the lower end of the above is rotatably arranged in the guide groove 55a. Bracket 4
1 is arranged so as to project rearward from the column 3 by inserting a notch groove 32 (see FIG. 1) formed in the vertical direction in the rear surface 31 of the column 3.

The contact roller 43 provided at the lower end of the slider 4 slides the load receiving base 5 rearward from a storage position (see FIG. 2) described later, and a work position (see FIG. 6) projecting rearward. (See FIG. 2), the base end of the support portion 55 is supported, and the support base 5 is supported by the first guide roller 42 from below, thereby holding the load receiving base 5 in a horizontal state. At this time, the first guide roller 42 is arranged at the front end position of the guide groove 55a.

Further, a second guide roller (not shown) is provided at the base end portion of the support portion 55. The second guide roller is provided so as to be able to roll back and forth along a pair of left and right slide rails 21 provided below the rear portion of the luggage box 2. Through the second guide rollers, the load receiving table 5 is attached to the slide rail 21. I am able to move smoothly along it.

The load receiving tray 5 thus constructed is stored in the storage position A shown in FIG. 2 in which the load receiving tray 5 is slid to the front end portion of the slide rail 21 and stored below the rear portion of the load box 2 in a folded state.
And a diagram in which the tip-side load-receiving member 52, which is slid to the rear of the slide rail 21 and folded, is horizontally extended on the extension of the base-end-side load-receiving member 52 and lifted and lowered between the ground and the floor surface of the load box 2. 6 and the work position B shown in FIG.

By the way, a tuning mechanism 10 shown in FIG. 7 is provided between the load receiving table 5 and the slider 4. The tuning mechanism 10 is for smoothly sliding the load receiving base 5 along the left and right slide rails 21 between the storage position A and the working position B as described above, and acts on each push and pull of the load receiving base 5. It is composed of two sets of tuning wires 11 and 12, and each tuning wire 11 and 12 is stretched as follows.

One tuning wire 11 has one end shown in FIG.
7 is fixed to a mounting member 45 connected to the one slider 4 on the upper side, and the middle portion is guided to the front (left side in FIG. 7), and then the base end one side portion of the base end side load receiving member 51. It is wound around a sheave 13 provided (on the upper side in FIG. 7), folded back rearward, guided to the distal end side of the base end side load receiving member 51, and then the one end portion of the base end side load receiving member 51 close to the front end. Is wound on the sheave 14 provided on the other end of the base end side load receiving member 51 ((lower side in FIG. 7) and is wound on the sheave 15 provided on the other end, and the other end Is fixed to the mounting member 46 of the other slider 4.

One end of the other tuning wire 12 is shown in FIG.
After being fixed to the mounting member 46 connected to the other slider 4 which is the lower side in FIG. 1, and the middle part is guided forward (left in FIG. 7), the base end other side of the base end side load receiving member 51. Portion (lower side in FIG. 7) is wound around a sheave 16 and folded back, guided to the tip end side of the base end side load receiving member 51, and then the tip end of the base end side load receiving member 51, etc. It is wound around the sheave 17 provided on the side portion and guided to one side portion (upper side in FIG. 7) of the base end side load receiving member 51, and is wound around the sheave 18 provided on this one side portion, and the other end. Is fixed to the mounting member 45 of one slider 4.

The tuning wires 11 and 12 and the sheaves 13 to 18 described above are arranged, for example, by utilizing the bottom space portion of the base end side load receiving member 51.

Further, a cover material C is continuously provided on the rear surface 31 of the pillar 3. The cover material C is for covering the bracket 41 projecting rearward from the rear surface 31 of the support column 3, has the same lateral width as the left and right lateral widths of the support column 3, and has a front-rear width approximately the same as the protruding length of the bracket 41. Is formed into a hollow elongated body having a rectangular cross section.
That is, the cover material C is arranged on the rear extension of each of the columns 3 so as to be integrated with the columns 3. On the rear surface of the cover material C, a bracket 41 is attached as the slider 4 moves up and down.
A cutout groove C1 is formed to allow the vertical movement of the.

By covering the inside of the bracket 41 projecting from the column 3 with the cover material C as described above, the bracket 41 can be protected from damage and the like, and the appearance of the entire apparatus can be made clear, which is of a good design. It is possible to improve.

Next, the operation of the load receiving platform elevating / lowering device 1 thus constructed will be described.

As shown in FIG. 2, in a state where the load receiving tray 5 is arranged at the storage position A, the operator first pulls out the load receiving tray 5 to the rear of the load box 2. As a result, in the load receiving table 5, the second guide roller provided at the base end of the base end side load receiving member 51 moves along the slide rail 21, and the first guide roller 42 moves along the guide groove 55a. so,
It is arranged at a work position B projecting to the rear of the luggage box 2.

In this way, when the load receiving base 5 is slid from the storage position A to the working position B, both sides of the load receiving base 5 have two sets of tuning wires 11 constituting the tuning mechanism 10.
By the action of 12, the guide rail 21 slides in synchronization with the left and right without being displaced back and forth. Thereby, the load receiving base 5 can be smoothly slid through the first guide roller 42 and the second guide roller.

Next, at the work position B, the tip side load receiving member 52 of the load receiving base 5 folded is rotated rearward so that the base side load receiving member 51 and the tip side load receiving member 52 are developed horizontally. To do. After that, the elevating cylinder 7 is expanded / contracted to move the slider 4 up / down along the support column 3 through the wire 6, so that the load receiving base 5 connected to the slider 4 is placed between the ground and the floor of the load box 2. The work is lifted up and down, and thereby, the work of loading and unloading the cargo between the ground and the cargo box 2 through the cargo receiving table 5 is performed.

When the loading and unloading work of the luggage is completed,
Fold the loading tray 5 in the reverse operation to the above operation,
It is placed in the storage position A by pushing it from the rear of the luggage box 2 to the lower rear portion of the luggage box 2. Also in this case, the loading mechanism 5 can be smoothly slid through the first guide roller 42 and the second guide roller by the tuning mechanism 10 to be placed at the storage position A.

As described above, the load receiving tray 5 is folded into two and stored in the lower rear portion of the load box 2 so that the load receiving tray 5 can be stored.
The storage space before and after the lower part of the rear of the luggage box 2 for storing the can be reduced by an amount corresponding to the folding of the load receiving base 5. For this reason, the reduction of the storage space makes it possible to attach to a small truck that could not be attached due to space limitation in the past.

Further, since the tail lamp 91 and the license plate 92 are embedded in the rear surface of the cross member 8 to raise the height positions of the tail lamp 91 and the license plate 92, the load receiving platform 5 is folded by the amount corresponding to this. Even if the vertical width of the platform 5 becomes thicker, this thickness can be absorbed, and thus the ground height of the load receiving platform 5 during storage can be secured more than before.

Although the present embodiment has been described for the case where the load receiving tray 5 is folded in two, the load receiving tray 5 has two parts.
The present invention is not limited to folding in three and may be folded in three or more.

[0047]

As described above, according to the loading platform raising / lowering device of the present invention, the tail lamp and the license plate are embedded in the rear surface of the cross member connected between the lower ends of the pair of left and right columns. Thus, it is possible to increase the above-ground height of the cargo receiving tray stored below the rear portion of the luggage box as compared with the conventional one provided below the cross member.

Further, since at least two front and rear folds of the load receiving base are configured to be stored in a folded state, the load receiving base can be stored in the front and rear lower parts of the load box for storing the load receiving base. The storage space can be reduced by the amount of folding the receiving tray. For this reason, the reduction of the storage space makes it possible to attach to a small truck that could not be attached due to space limitation in the past.

[Brief description of drawings]

FIG. 1 is a perspective view showing a load receiving platform raising / lowering device of the present invention.

FIG. 2 is a side view of a partial cross section showing the load receiving platform elevating device arranged in the storage position.

FIG. 3 is a front view showing the load receiving platform raising / lowering device arranged at a storage position.

FIG. 4 is a front view showing a structure of a base end side load receiving member.

FIG. 5 is a plan view showing a cargo tray.

FIG. 6 is a side view of a partial cross section showing the load receiving platform elevating / lowering device arranged in the working position.

FIG. 7 is a schematic diagram showing a configuration of a tuning mechanism.

FIG. 8 is a perspective view showing a conventional load receiving platform raising / lowering device.

[Explanation of symbols]

1 Lifting device 2 packing boxes 3 props 5 receiving platform 51 Base end side load receiving member 52 Tip side load receiving member 8 cross members 91 tail lamp 92 license plate A storage position B Working position

Claims (2)

[Claims] 1. A load receiving platform raising and lowering device, wherein a load receiving platform is provided so as to be vertically movable along a pair of right and left columns that are erected on a load box of a vehicle, and is capable of being stored under the load box. An elevating cylinder as an elevating and lowering drive source of the cargo receiving stand is incorporated in the cross member connected to the lower side of the pair of columns, and further, a tail lamp and a license plate are embedded in the rear surface portion of the cargo receiving stand raising and lowering device. . 2. A load receiving platform elevating device in which a load receiving base is provided so as to be vertically movable along a pair of right and left columns that are erected in a load carrying box of a vehicle, and is capable of being stored under the load carrying box. At least two foldable back and forth,
An apparatus for elevating and lowering a loading tray, which is configured to be stored by horizontally moving in a folded state of the loading tray.