JP2003252107A - Slide synchronizing mechanism of cargo receiving space in housing type cargo receiving space lifting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slide synchronizing mechanism of a cargo receiving space in a housing type cargo receiving space lifting device capable of smoothly sliding the cargo receiving space by synchronizing slide operation of left and right both side parts of the cargo receiving space with a pair of left and right guide rails. <P>SOLUTION: In this housing type cargo receiving space lifting device, the cargo receiving space 5 is liftably arranged along columns via a slider 4 arranged in a pair of left and right columns erected in a cargo box of a vehicle, and the cargo receiving space is constituted so as to be longitudinally slidable along the pair of left and right guide rails between a housing position under the cargo box and a work position in the rear of the cargo box. The synchronizing mechanism 10 is interposed in the slider 4 side and the cargo receiving space 5 for longitudinally moving along the guide rails while synchronizing the left and right both side parts of the cargo receiving space 5. The synchronizing mechanism 10 is composed of two sets of synchronizing rope bodies 11 and 12 respectively acting for a push and a pull. These two sets of synchronizing rope bodies are bilaterally symmetrically tensioned over the slider 4 side and the cargo receiving space 5. <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 a loading tray, which is vertically movable along a pair of left and right columns that are erected in a luggage box of a vehicle, and has a storage position below the luggage box and a working position behind the luggage box. The present invention relates to a retractable load receiving / descending / descending device which is configured to be slidable between and, and more specifically, to a slide synchronizing mechanism for sliding the load receiving / sending device.

[0002]

2. Description of the Related Art Conventionally, a load carrier is provided so as to be able to move up and down along the pillars via sliders provided in a pair of left and right pillars that are erected on a cargo box of a vehicle. There is provided a retractable load receiving platform elevating device configured to be slidable back and forth along a pair of left and right guide rails between a storage position of the storage box and a work position behind the load box.

[0003]

However, in the case where the load receiving base is slid back and forth along the pair of left and right guide rails as in the above-mentioned conventional case, the friction generated between the left and right side portions of the load receiving base and the respective guide rails. If there is a difference in resistance between the two sides of the pedestal due to the influence of dirt or dust, it will shift in the front-back direction when sliding, and if the pedestal shifts left and right in the front-back direction and is slanted Difficult to slide. As a result, it is necessary to correct the left and right displacement of the cargo receiving stand, which leads to a reduction in workability, and it may get stuck in the middle of the slide and stop working, resulting in damage to the guide rails, the load receiving tray, etc. was there.

The present invention has been made in view of the above problems. An object of the present invention is to synchronize the sliding operation of the left and right side portions of the load receiving tray with respect to the pair of left and right guide rails. It is an object of the present invention to provide a slide synchronizing mechanism of a load receiving platform in a retractable load receiving platform lifting device capable of smoothly sliding.

[0005]

According to a first aspect of the present invention, there is provided a slide synchronizing mechanism for a loading tray in a retractable loading platform lifting apparatus according to claim 1, wherein sliders are provided in a pair of right and left columns that are erected on a loading box of a vehicle. A load receiving platform is provided so as to be able to move up and down along the support column via this, and this load receiving platform slides back and forth along a pair of left and right guide rails between a storage position below the load box and a work position behind the load box. In the retractable cargo cradle lifting device configured as possible, the slider side and the cargo cradle are
A tuning mechanism is provided for moving the left and right sides of the cargo receiving stand back and forth along the guide rail while synchronizing the left and right sides.

According to a second aspect of the present invention, in the slide tuning mechanism of the loading tray in the retractable loading platform lifting apparatus, the tuning mechanism comprises two sets of tuning cords that act on push and pull respectively. The tuning cords are stretched symmetrically over the slider side and the load receiving base.

[0007]

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

FIG. 1 shows a retractable platform pedestal lifting device.

The retractable loading platform elevating device 1 includes a loading box 2 for a vehicle.
A pair of left and right columns 3 standing upright at the rear end of the column, and sliders 4 inserted in the columns 3 so as to be vertically movable (see FIG. 2).
And the load receiving base 5 supported by the lower ends of the left and right sliders 4.
And an elevating cylinder 7 connected to each slider 4 via a wire 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 lift rollers (not shown) at its upper end and in the middle thereof so that the lift rollers can smoothly move 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 portion 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, the lift cylinder 7 moves the slider 4 up and down to move the load receiving base 5 connected to the slider 4 up and down between the ground and the floor of the load 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 housing portion 82 is formed by notching the rear surface of the existing cross member 8 and partitioning it by a partition wall 83 from the front portion housing the lifting 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 disposed 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 base 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 for mounting the load 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, the hook portion 56b is supported by the support portion 55.
In a state where the load receiving main body 54 and the supporting portion 55 are fitted and supported from above from above, the load receiving main body portion 54 and the supporting portion 55 are fastened by fastening bolts 57 at appropriate positions via the fixing portions 56a. Are integrally fixed to form a base end side load receiving member 51.

That is, since both sides of the load receiving main body portion 54 and the support portion 55 are fixed by the fixing bolts 57 via the connecting member 56 that holds and supports the upper end portion of the support portion 55 by the hook portion 56b, 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 as described above, 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, a guide groove 55a is formed in the outer surface of the support portion 55 in the front-rear direction, and a 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) to be described later, and is placed in a projecting position rearward (FIG. 6). (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 of the support 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 base 5 thus constructed is stored in the storage position A shown in FIG. 2 in which the load receiving base 5 is slid to the front end of the slide rail 21 and stored below the rear 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.

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. Tuning wire 1 as two sets of tuning filaments
The tuning wires 11 and 12 are stretched as follows.

One end of the tuning wire 11 is 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 in this manner, 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, when 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 loading tray 5 is slid from the storage position A to the working position B, both sides of the loading tray 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 working position B, the front end side load receiving member 52 of the load receiving base 5 which is folded is rotated rearward so that the base end side load receiving member 51 and the front end 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 in 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 base 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.

The above-described embodiment is merely a preferred embodiment of the present invention, and the present invention is not limited to this, and various design changes can be made within the scope.

For example, in the present embodiment, the case where the load receiving tray 5 is manually slid between the storage position A and the working position B has been described, but the load receiving tray 5 and the vehicle body side are shown in FIG. The slide cylinder 58 is connected in the front-rear direction as indicated by the alternate long and short dash line in FIG.
The load receiving tray 5 may be slid by the expansion and contraction operation.

Further, since the above-mentioned tuning mechanism 10 is provided, the slide cylinder does not necessarily have to be arranged at the center position of the load receiving base, and as shown by the two-dot chain line in FIG. Even if it is provided at a different position (indicated by reference numeral 58 '), the loading tray 5 can be slid smoothly by the action of the tuning mechanism 10. As a result, it is possible to increase the degree of freedom of the mounting position of the slide cylinder, and it is possible to alleviate the restriction when installing the retractable cargo platform elevating / lowering device 1 in the vehicle.

Further, the tuning mechanism 10 is not limited to the one in which the slide cylinder is connected to the load receiving base 5 as described above, but may be also operated by directly moving one of the tuning wires 11 or 12 by the expansion / contraction operation of the slide cylinder. The receiving tray 5 can be moved smoothly.
As a result, the slide cylinder can be arranged in the width direction (indicated by reference numeral 58 ″) as shown by the chain double-dashed line in FIG. 7 instead of the front-back direction as described above, which allows the mounting position of the slide cylinder to be freely set. It is possible to further increase the degree of restriction, and it is possible to further alleviate the restriction when installing the retractable load receiving platform elevating device 1 in the vehicle.

Further, not limited to the slide cylinder, the load receiving base 5 may be slid by using an appropriate actuator such as a motor.

Further, although one set of cords is formed by one continuous wire, two wires may be connected by a link or the like to form one set of cords. Any continuous cord body that can obtain It should be noted that the cord body is not limited to the wire, and includes ropes and chains.

Further, although the description has been given for the case where the load receiving tray 5 is configured in two folds, the load receiving tray 5 is not limited to two folds, and may be a so-called one piece that is not a foldable type, or folds into three folds or more. It may be configured as follows.

[0048]

As described above, according to the slide synchronism mechanism of the load carrier in the retractable load carrier lift apparatus of the present invention, the left and right side portions of the load carrier are synchronized with each other across the slider and the load carrier. Since the tuning mechanism for moving back and forth along the guide rail is provided, the loading platform can be smoothly slid by this tuning mechanism. Also,
When the load receiving platform is slid by an actuator such as a slide cylinder, the degree of freedom in the mounting position of these actuators can be increased, and the restrictions when installing the retractable load receiving platform lifting device in the vehicle can be relaxed.

[Brief description of drawings]

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

FIG. 2 is a side view of a partial cross-section showing the retractable cargo cradle lifting device arranged at the retracted position.

FIG. 3 is a front view showing a retractable cargo cradle lifting 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 retractable cargo cradle lifting device arranged in the working position.

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

[Explanation of symbols]

1 Lifting device 2 packing boxes 3 props 4 slider 5 receiving platform 10 Tuning mechanism 11, 12 wire (tuned filament) 21 Guide rail A storage position B Working position

Claims (2)

[Claims] 1. A load carrier is provided so as to be movable up and down along the pillar via sliders provided in a pair of left and right pillars which are erected on a cargo box of a vehicle. In a retractable load carrier lifting device configured to be slidable back and forth along a pair of left and right guide rails between a storage position and a work position behind the cargo box, the slider side and the load receiver are provided with A slide tuning mechanism for a load receiving tray in a retractable load receiving tray lifting / lowering device, characterized in that a tuning mechanism for moving back and forth along the guide rail while interposing both right and left sides is provided. 2. The tuning mechanism is composed of two sets of tuning cords acting on push and pull respectively, and these two sets of tuning cords are stretched symmetrically over the slider side and the load receiving base. The slide synchronizing mechanism of the load carrier in the retractable load carrier lifting device according to claim 1.