JP5885337B2 - Loading platform lifting device - Google Patents

Description

  The present invention relates to a load receiving table lifting device in which a load receiving table is lifted and lowered along a column erected at the rear end of a vehicle, and more particularly, a load receiving table lifting device mounted on a vehicle in which a bed floor surface extends rearward from the column. About.

  As one of the load receiving platform lifting devices, a pair of right and left support columns installed on the rear side of the vehicle, a slider that can move the support columns up and down, and a load receiving table that is connected to the slider so as to be able to rotate in the vertical direction. There is known a load receiving table lifting device having a load receiving table that moves up and down. This apparatus takes a standing posture in which a horizontal load receiving platform is raised and lowered when loading and unloading and the vehicle is rotated upward from the horizontal posture during vehicle travel.

  Such a load receiving table lifting device includes a torsion bar that biases the rotation of the load receiving stand to the standing posture as a manual change of the load receiving stand from the horizontal posture to the standing posture. One end of the torsion bar is fixed to the connecting portion between the load receiving table and the slider, and the other end is supported with respect to the load receiving table so as not to swing significantly. Since one end of the torsion bar is fixed to the slider, the twisting force of the torsion bar generated by the rotation of the load receiving table is used as a biasing force for biasing the rotation of the load receiving table. The urging force reduces the turning operation force for raising the load receiving stand, so that the operator's work of turning the load receiving stand is facilitated.

  In recent years, the performance of the torsion bar is important in using the load receiving table lifting device, and efforts have been made to realize a configuration that can easily perform maintenance of the torsion bar and the like (Patent Document 1).

JP 2011-230419 A

  As described above, the effect of the torsion bar in the load receiving platform elevating device is recognized, but there are some that do not actually have a torsion bar. As a typical example, there is a load receiving table lifting device mounted on a so-called light vehicle (a light vehicle defined by the enforcement regulations of the Road Transport Vehicle Law).

  Unlike other vehicles, a mini vehicle has a different configuration relating to the connection between the slider and the cargo cradle. The inventor paid attention to the fact that the torsion bar cannot be provided due to the difference.

  Specifically, the load receiving platform lifting device of the mini vehicle is provided with a layout in which the loading platform floor surface extends rearward from the rear surface with respect to the upright column. Since the load receiving platform moves up and down along the vertical direction, the horizontal load receiving platform moves up and down at a position away from the support column by the amount of the loading platform floor surface extending. Therefore, as shown in FIG. 7A, the side 91 of the load receiving table is configured to protrude downward from the central portion 92, and the load receiving table and the slider are connected to each other from the rear surface of the support column by this protruding portion. ing.

  In this configuration, in order to arrange the torsion bar 93 that generates the urging force, one end needs to be fixed to the protruding portion 91a of the load receiving table to which the slider is connected. Since the other end of the torsion bar 93 is accommodated in the center side portion 92 of the load receiving platform, the torsion bar 93 is arranged in a direction intersecting the vehicle width direction as shown in the figure, and a part thereof (of length L Part) is exposed. In this state, as shown in FIG. 7 (b), when the load receiving table 94 is raised, a part of the exposed torsion bar 93) interferes with the extending load floor surface 95, and its rotation operation is hindered. End up.

  The present invention has been made in view of these points, and an object of the present invention is to provide a load receiving platform lifting device capable of performing a favorable rotation operation even in a configuration in which a load carrier floor surface extends rearward from the rear surface of a support column.

  In the present invention, a support column erected on the left and right with the vehicle bed floor surface extending rearward, a slider disposed so as to be movable up and down with respect to the support column, and in a horizontal position forward of the center portion A load receiving platform lifting device including a load receiving platform having a side portion protruding to the side and connected to the slider so as to be rotatable up and down. With respect to this apparatus, the above-described problems can be solved by using the following means.

First, one end of a torsion bar that biases upward rotation of the load receiving table is connected to the protruding side portion of the load receiving table, and the torsion bar extends across the vehicle width direction. In addition, it is inserted into the cargo cradle from the middle part, and the extended part of the cargo bed floor surface is between the extended part of the cargo bed floor surface and a predetermined part from one end of the torsion bar to the middle part. A gap is formed in the horizontal direction, and an interference avoiding portion is provided for avoiding interference with the predetermined portion when the load receiving platform is rotated.
Some of the interference avoidance portions have chamfered portions at left and right corners of the extended portion of the cargo bed floor surface.

  Second, a torsion bar having one end fixed to the slider and energizing upward rotation of the load receiving table is inserted into the load receiving table. In the meantime, the torsion bar is disposed at a position horizontally separated from the extended portion of the cargo bed floor surface, and avoids interference with the extended portion when the load receiving platform rotates. It is assumed that the part is provided.

  The interference avoiding portion includes a support arm having one end connected to the slider and the other end connected to a side surface of the load receiving table, and one end of the torsion bar fixed to the tip of the support arm. .

  As in the present invention, by providing an interference avoiding portion that forms a gap in the horizontal direction between the cargo bed floor surface extending rearward and the torsion bar, the protruding side portion of the load receiving table and the slider are connected to each other. However, the rotation operation from the horizontal posture to the standing posture of the cargo cradle is not hindered. As a result, a “tornage lifting device mounted on a light vehicle” that could not be provided with a torsion bar can be provided with a torsion bar.

  In terms of providing a “horizontal gap”, chamfering the “corner of the extended part of the cargo bed floor”, which has a relatively low possibility of hindering the loading and unloading of the cargo, makes the cargo receiving platform In this case, the horizontal distance from the torsion bar facing in the front-rear direction can be increased. Further, the horizontal distance from the torsion bar can be increased similarly by separating the position where one end of the torsion bar is fixed to the load receiving base from the connecting position between the load receiving base and the slider. By any of these means, it is possible to prevent the rotation operation of the load receiving table in the standing direction from being hindered.

It is a perspective view of the load receiving table raising / lowering apparatus which concerns on the 1st Embodiment of this invention. It is a side view of the load receiving table raising / lowering apparatus which concerns on the 1st Embodiment of this invention. It is a rear view of the load receiving table lifting / lowering device according to the first embodiment of the present invention. It is a principal part perspective view of the load receiving table raising / lowering apparatus which concerns on the 1st Embodiment of this invention. It is a model side view of the load receiving table raising / lowering apparatus which concerns on the 1st Embodiment of this invention. It is a principal part perspective view of the interference avoidance part which concerns on the 2nd another embodiment of this invention. It is a schematic diagram of the load receiving table lifting apparatus according to a conventional embodiment.

An example of an embodiment of the present invention will be described with reference to the drawings.
(First embodiment)

  As shown in FIG. 1 (a), a load receiving platform lifting apparatus 100 mounted on the rear side of a vehicle is composed of a load receiving platform 1 that is lifted and lowered in a horizontal state, and a pair of left and right hollows that are erected on the rear side of the vehicle. A support column 2, a slider 3 inserted into each support column 2 and freely movable up and down, and a biasing means 4 that biases upward rotation of the load receiving table 1 in a region sandwiched between the pair of sliders 3. Yes. Further, when not in use (vehicle running state), the load receiving platform lifting apparatus 100 is in a state in which the load receiving stand 1 is held in an upright position as shown in FIG. In the present embodiment, the vehicle on which the cargo receiving platform lifting apparatus 100 is mounted is a “light vehicle” defined in the Enforcement Rules of the Road Transport Vehicle Law.

  The load receiving platform 1 is supported by a bracket 3a that is made of a metallic member and serves as a vehicle-side support portion. The bracket 3a is a protruding portion of the slider 3 that protrudes rearward through a slit 2a provided on the rear surface of the column 1, and the load receiving platform 1 is rotatably connected to the bracket 3a via a support shaft 3b. . Note that the operator manually changes the posture of the load receiving platform 1 from the horizontal state to the standing state. At this time, the support shaft 3b is the center of rotation.

  The left and right support columns 2 are erected in a region after cutting the left and right corners of the cargo bed floor. As shown in FIG. 2A, the support column 2 communicates with the upper side inside, but is divided into two front and rear spaces, a front chamber 2 a and a rear chamber 2 b, by a partition wall 21. FIG. 2A shows the column 2 on the left side of the vehicle. A hydraulic cylinder 5 is arranged in the front chamber 2a with the vertical direction as the longitudinal direction and the rod side facing down. A slider 3 is disposed in the rear chamber 2b.

  The raising / lowering operation of the slider 3 is performed with the expansion and contraction of the hydraulic cylinder 5. The bottom of the hydraulic cylinder 5 is fixed to the inner wall of the support column 2 or the partition wall 21 and expands and contracts by pressure oil supply / discharge from a hydraulic pump (not shown).

A fixed pulley 61 having two right and left rows of pulleys is fixed to the upper part of the column 2. The fixed pulley 61 is located in a communication portion with the front chamber 2a and the rear chamber 2b, and a front edge portion thereof faces the front chamber 2a and a rear edge portion thereof faces the rear chamber 2b. A movable pulley 62 is attached to the rod end of the hydraulic cylinder 5. The movable pulley 62 can move up and down the front chamber 2a as the hydraulic cylinder 5 (rod) expands and contracts. Similarly, the movable pulley 62 includes two rows of left and right pulleys corresponding to two rows of pulleys of a fixed pulley. Wires 63 are stretched between the fixed pulley 61 and the movable pulley 62. One end of the wire 63 is fixed to a bracket 63a provided in the middle portion of the partition wall 21 so as to be located in the front chamber 2a, and the other end is a bracket 63b provided in the slider 3 so as to be located in the rear chamber 2b. It is fixed to. The expansion force of the hydraulic cylinder 5 is transmitted to the slider 3 by the wire 6.
Although not shown, the slider 3 arranged on the right column 2 is raised and lowered based on the following configuration.

  Below the pair of left and right columns 2, a connecting member for connecting the columns to each other extends in the vehicle width direction. The connecting member is hollow, and the hollow portion communicates with the rear chamber 2 b of the column 2. . A relay pulley (not shown) is disposed in the communicating portion, and another wire fixed to a bracket 63 a disposed in the front chamber 2 a in the left column 2 is connected to the rear via the fixed pulley 61. It passes through the chamber 2b and is led to the right column through the relay pulley. In the right support column 2, the wire guided through the lower relay pulley extends to the upper side and is fixed to the right slider 3 through the fixed pulley arranged on the upper side of the support column 2.

  With this configuration, the right slider 3 is also moved up and down as the hydraulic cylinder 5 disposed in the left column 2 expands and contracts. This configuration is known and introduced in Japanese Patent Application Laid-Open No. 2004-331630.

  Next, the positional relationship between the load receiving platform 1, the support column 2, and the loading platform floor surface 5 will be described with reference to FIG. In FIG. 2B, for convenience of explanation, the support column 2 is indicated by a dotted line, and a portion of the load receiving platform 1 that overlaps with the loading platform floor surface is omitted except for the support shaft (rotation center portion) 2b. .

  As shown in the figure, the loading platform floor surface 5 extends further to the rear of the vehicle than the rear surface of the column 2. For this reason, the slider 3 and the load receiving platform 1 are connected with each other in a horizontal posture in which the horizontal load receiving platform (the chain double-dashed line portion) 1 is close to the extending portion 5a of the loading platform floor surface 5 and is in a substantially flush state. The load receiving platform (solid line portion) 1 is positioned above the extension portion 5 a of the loading platform floor surface 5. Thereby, the full length Lc of the vehicle which concerns on this embodiment is prescribed | regulated by using the extension part 5a of a cargo-bearing floor as a rear end. Temporarily, when the stand 1 in the standing position is not located on the upper side of the extending portion 5a but on the rear side as shown in the drawing, the total length of the vehicle becomes larger than Lc, which is larger than the size defined by the Road Transport Vehicle Law. It gets bigger. On the other hand, if the mounting method in which the protruding portion 5a is cut in advance and the load receiving platform lifting device 100 is mounted on the vehicle in a state where the support column 2 is arranged at the illustrated position, the cutting amount of the loading platform floor surface increases. This is not preferable because the number of bodywork steps increases.

  The connection part of the load receiving stand 1 and the slider 3 which concerns on this embodiment, and its peripheral member are demonstrated concretely using FIG. FIG. 3 is a rear view showing the stand 1 in a standing state, and for the sake of convenience of explanation, members attached to the vehicle side such as a load carrier floor are omitted.

  As shown in FIG. 3A, the load receiving platform 1 is connected to the slider 3 via a support shaft 3b on both sides. In the vicinity of the support shaft 3b, a torsion bar 4 for biasing upward rotation of the load receiving platform 1 is arranged with one end fixed.

  As shown in the drawing, the side portion of the load receiving platform 1 has a configuration in which a substantially U-shaped connecting bracket 11 is fixed by being cut out into a concave shape. However, the outer portion of the cutout portion has a protruding portion 11a protruding downward. Since the protruding portion 11a protrudes from the central portion 12 at the center in the vehicle width direction, the protruding portion 11a protrudes from the extending portion 5a of the loading platform floor surface 5 when the load receiving platform 1 is in a horizontal state. The part 11a is located on the side surface of the extension part 5a, and the central part 12 is located behind the extension part 5a. Accordingly, the cargo bed floor 5 and the cargo receiving platform 1 are substantially flush with each other. When the load receiving platform 1 is rotated from the horizontal state to the standing state as shown in the figure, the twisting force generated in the torsion bar 4 is used as the rotation biasing force.

  The torsion bar 4 has a portion (exposed portion) 41 that is exposed without being inserted into the cargo receiver 1 and a portion (inserted portion) 42 that is inserted. Of the torsion bar 4, one end 41 a close to the exposed portion 41 is fixed via a bolt 131 in the fixing holder 13 as shown in FIG. The fixing holder 13 is a cylindrical member having an open top and bottom, and one end portion 41 a of the bent torsion bar 4 is inserted into the fixing holder 13 from below. The fixing holder 13 is welded to the inside of the substantially U-shaped bracket 11.

  On the other hand, the other end 42 a of the torsion bar 4 is supported by the central portion 12 of the load receiving platform 1. The central portion 12 is a hollow member having a longitudinal direction in the vehicle width direction, and a cylindrical member 121 having left and right openings is fixed to the inside thereof. The torsion bar 4 is inserted from the left side of the cylindrical member 121 so that the other end 42a can abut on any of the front surface, the rear surface, and the upper surface of the cylindrical member 121.

  Thus, one end 41a of the torsion bar 4 is fixed to the slider 3, and the other end 42a is supported in a rotatable state, not in a relatively fixed state with respect to the slider 3. A torsional force is generated in the entire torsion bar 4 as the load receiving platform 1 rotates. In addition, as long as the torsional force is generated in the torsion bar 4, the other end 42 a may be fixed inside the central portion 12 of the load receiving platform 1.

  As shown in FIG. 3B, the torsion bar 4 is fixed in the vehicle width direction by fixing one end 41 a in the vicinity of the support shaft 3 b that connects the projecting portion 11 a of the load receiving platform 1 and the slider 3. It is arranged in a stretched state in the intersecting direction. For this reason, a cutout portion 12b having a width W1 is provided on the bottom surface 12a of the central portion 12 so as to be inserted into the central portion 12. The size of the width W1 can be appropriately set according to the arrangement state of the torsion bar 4, and is set so that the cargo receiving platform 1 has a necessary strength. The distance H1 between the support shaft 3b and the fixed position of the one end portion 41a of the torsion bar 4 is set so that an appropriate twisting force is generated in the torsion bar 4.

  The exposed portion 41 provided by the arrangement of the torsion bar 4 is inserted into the central portion 12 when viewed along the vehicle front-rear direction when the load receiving platform 1 is in a horizontal state, and compared with the receiving portion 42, the loading platform floor. It becomes a position very close to or overlapping with the extended portion 5a of the surface 5. For this reason, as shown in FIG. 4, the left and right end portions are chamfered in the extending portion 5 a of the cargo bed floor surface 5 according to the present embodiment (only the left end portion is shown in the drawing). The chamfered portion 5b has a length of W2 in the vehicle width direction. It is processed so that chamfering increases as it goes from the inside to the outside along the vehicle width direction. Due to the chamfered portion, a gap is formed in the horizontal direction between the extending portion 5a and the exposed portion 41 of the torsion bar 4. The width direction size W2 is set equal to or more than the length W1 of the exposed portion 41 of the torsion bar 4 in the vehicle width direction.

  Since the chamfering process is performed on the extending portion 5a of the cargo bed floor surface 5, as shown in FIG. 5 (a), the horizontal axis is formed so as to straddle the extending portion 5a with the support shaft 3b as a rotation center. Even if the load receiving platform 1 is rotated in the standing state, the exposed portion 41 of the torsion bar 4 exposed from the central portion 12 does not interfere with the extending portion 5a. That is, the rotation operation of the load receiving platform 1 is not hindered.

  Specifically, as shown in FIG. 5B, which is an enlarged view of a portion surrounded by a two-dot chain line, the chamfered portion 5b has a length L1 in the vehicle front-rear direction at the outermost edge portion in the vehicle width direction. ing. The length L1 is set to be larger than the exposed height H10 of the exposed portion 41 (see FIG. 3B) so that the extended portion 5a of the cargo bed floor surface 5 does not exist on the rotation trajectory of the exposed portion 41. Is formed. That is, the chamfered portion 5b in the extending portion 5a is provided as an interference avoiding portion that avoids interference between the exposed portion 41 of the torsion bar 4 and the extending portion 5a.

  Thus, by providing the chamfered portion 5b serving as an interference avoiding portion, the torsion bar 4 can be provided also in the load receiving platform lifting / lowering device 100 that requires the protruding portion 11a to be a connecting portion between the load receiving stand 1 and the slider. It is possible to reduce the burden required for the rotation operation of the load receiving platform 1 by the operator. In the case of the light vehicle according to the embodiment, since the vehicle height is low, the position of the load receiving platform 1 in the horizontal state is also lower than that of a vehicle other than the light vehicle. For this reason, the worker must bend up to lift the load receiving platform 1, but providing the torsion bar 4 is preferable because the force required for the rotation operation is reduced. Further, when the torsion bar 4 is arranged so that a torsional force biasing forward of the vehicle is generated in a desired magnitude even when the load receiving stand 1 is in the standing state, the load receiving stand is deployed from the standing state to the horizontal state ( Do not fall down unexpectedly when turning. In other words, it is excellent in safety. This is particularly effective when the vehicle stops on a sloping ground that falls downward.

  The chamfered portion 5b has a curved surface that swells outward as shown in FIG. 4B, but is not limited thereto. For example, a curved surface or a flat surface that swells inward may be used.

  In addition, the length of the chamfered portion 5b in the vehicle front-rear direction is processed so that the length increases from the inner side to the outer side in the vehicle width direction (the chamfer length increases). The shape of the chamfered portion 5b is limited as long as the exposed portion 41 of the bar 4 can be prevented from interfering with the extending portion 5a of the loading platform floor surface 5 when the loading platform 1 is rotated to the standing posture. Not. For example, the chamfered portion 5b may have a substantially rectangular shape from the inner side to the outer side in the vehicle width direction so as to have the same length in the vehicle front-rear direction, or a shape in which the length decreases.

  Furthermore, in FIG. 4B, the chamfered portion 5b has a configuration in which the upper and lower portions are not covered, but other configurations may be employed as long as the configuration does not hinder the rotation operation of the load receiving platform 1. For example, a plate corresponding to the shape of the chamfered portion 5b is disposed on the upper side, and a front portion of the plate is pivotally supported with respect to the cargo bed floor surface 5 so that the plate can rotate upward from a horizontal state. Even when the exposed portion 41 of the torsion bar 4 comes into contact with the plate during the rotation operation of the load receiving platform 1 to the standing posture, the plate is pushed by the exposed portion 41 as the load receiving platform 1 rotates. Is rotated. That is, the turning operation of the load receiving platform 1 is not hindered. Further, if the plate is in a horizontal posture, the chamfered portions 5b at the left and right end portions of the cargo bed floor surface 5 are covered with the plate, so that there is no gap when loading and unloading the luggage.

In addition, although the loading platform floor surface 5 having the chamfering portion 5b as the interference avoidance portion is used, this is limited to the loading platform floor surface 5 that is chamfered before or after mounting on the chassis frame (not shown). is not. For example, if the floor member has a shape that can form a gap to the extent that the exposed portion 41 of the torsion bar 4 does not interfere, the load carrier floor surface that is manufactured without the chamfering process is also targeted. Furthermore, the “chamfering” used in the present embodiment is a configuration in which the loading platform floor is cut off, a configuration in which it is cut (notched), or a plurality of plates so that the chamfered portion 5b is formed. Includes a combination of materials.
(Second Embodiment)

  Next, another embodiment of the load receiving table lifting device according to the present invention will be described. Since the connection means of the torsion bar is mainly different from that of the first embodiment, this portion will be mainly described with reference to FIG. Note that the same configurations as those in the first embodiment will be described using the same reference numerals.

  In the present embodiment, the torsion bar 400 is connected to the support arm 8 shown in FIG. The illustrated support arm 8 is disposed between the left column 2 and the left side of the load receiving table 1, but the same support arm 8 is also disposed on the right side of the load receiving table 1.

  The support arm 8 has a proximal end arm 81 extending in one direction and a distal end arm 82 extending in the same manner, and the ends of the support arm 8 are pivotally supported by a first support shaft 83. The base end portion 81 a of the base end arm 81 is pivotally supported by the second support shaft 84 with respect to the slider 3. With this configuration, the proximal arm 81 is rotatable with respect to the slider 3, and the distal arm 82 is rotatable with respect to the proximal arm 81.

  The tip arm 82 has a tip 82 a attached to the left side surface of the load receiving platform 1. An engaging claw 85 is provided at the distal end portion 82a. The engaging claw 85 is inserted through a hole formed in the left side surface portion of the load receiving platform 1 and is disposed so as to project inside the hollow central portion 12 (see FIG. 3A) of the load receiving platform 1. One end portion 401 of the torsion bar 400 accommodated in the central portion 12 of the load receiving platform 1 is fixed to the engaging claw 85. The other end portion 402 of the torsion bar 400 is supported inside the central portion 12 as in the first embodiment. Therefore, the entire torsion bar 400 is accommodated in the central portion 12 with the vehicle width direction as the longitudinal direction.

  As shown in FIG. 6B, the support arm 8 extends in a substantially straight line when the load receiving platform 1 is in a horizontal posture. When the load receiving platform 1 is rotated from this state to a standing posture (arrow R1), the torsion bar 400 is similarly rotated (arrow R2). At this time, the tip end portion 82 a of the tip arm 82 rotates counterclockwise, and the first support shaft 83 rotates clockwise about the second support shaft 84. Accordingly, the shape of the support arm 8 changes so as to be bent in a V shape around the first support shaft 83.

  The torsion bar 400 is arranged by the support arm 8 at a position that is horizontally separated from the extending portion 5a of the cargo bed floor surface 5 by a length L2 as shown in the figure, and the torsion bar 400 is accommodated in the central portion 12 of the cargo receiving platform 1. Therefore, when the load receiving platform 1 is rotated around the support shaft 3b that is a connecting portion between the projecting portion 11a of the load receiving platform 1 and the slider 3, the interference between the torsion bar 400 and the extending portion 5a occurs. It can be avoided. That is, the support arm 8 functions as an interference avoidance portion between the torsion bar 400 and the extending portion 5a, and prevents the rotation operation of the load receiving platform 1 from being hindered.

  As shown in FIG. 6B, the support arm 8 according to the present embodiment is configured to be installed obliquely between the slider 3 and the load receiving table 1 when the load receiving table 1 is in a horizontal state. The present invention is not limited to this as long as 400 can be arranged at a position away from the extending portion 5a of the cargo bed floor surface 5 in the horizontal direction. The support arm 8 is composed of a single plate, and the base end portion is pivotally supported by the slider 3 at a position close to the loading platform floor surface 5. When the loading platform 1 is in a horizontal position, the support arm 8 falls down and the loading platform is The support arm 8 can also be arranged to stand up when the stand 1 is in the standing posture.

  If the support arm 8 as described above is used, the torsion is also achieved in the load receiving platform lifting device that connects the load receiving platform 1 and the slider 3 at the protruding portion 11a of the load receiving platform 1 due to the influence of the extending portion 5a of the load receiving floor 5. A configuration including the bar 400 may be employed.

  In the first and second embodiments, the torsion bars 4 and 400 are arranged on both the left and right sides of the load receiving platform 1. However, only one of the torsion bars may be used, and the interference avoiding unit may be a torsion bar. The number can be changed as appropriate according to the number and arrangement.

  Moreover, although the vehicle on which the load receiving platform lifting apparatus is mounted has been described for a light vehicle, the vehicle is not limited to a light vehicle as long as the load carrier floor surface extends rearward from the rear surface of the support column.

  INDUSTRIAL APPLICABILITY The present invention is useful for a load receiving table lifting device in which a mounting position of a torsion bar in a side portion of the load receiving table is a position extending from the main body of the load receiving table.

DESCRIPTION OF SYMBOLS 1 Loading platform 2 Support | pillar 3 Slider 4, 400 Torsion bar 5 Loading platform floor surface 5a Extension part (loading platform floor surface)
5b Chamfered part (interference avoidance part)
8 Support arm (interference avoidance part)
81 Base end arm 82 Front end arm 11 Connection bracket (container)
11a Protruding part (container)
100 Loading platform lifting device

Claims (2)

A support column erected on the left and right with the loading platform floor surface of the vehicle extending rearward, a slider disposed so as to be movable up and down with respect to the support column, and in a horizontal posture, it protrudes forward from the center portion. A load receiving base that is connected to the slider so as to be rotatable up and down, and the central portion of the load receiving base extends from the load receiving floor when the load receiving base is in a horizontal posture. A load receiving platform lifting device that is close to the rear of the portion and that is close to the upper portion of the extended portion of the load carrier floor surface in the standing posture ,
One end of a torsion bar that biases upward rotation of the load receiving table is connected to the protruding side portion of the load receiving table,
This torsion bar extends from the projecting side part to the center part so as to intersect in the vehicle width direction and is inserted into the load receiving base from the middle part.
In the extended portion of the loading platform floor surface, a horizontal gap is formed between the extending portion of the loading platform floor surface and a predetermined portion from one end to the middle portion of the torsion bar, and the loading platform is rotated. A load receiving platform elevating device, wherein an interference avoiding portion for avoiding interference with the predetermined portion during movement is provided. The cargo receiving platform lifting device according to claim 1, wherein the interference avoiding unit has chamfered portions at left and right corners of an extended portion of the cargo bed floor surface.

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