JPH0451100Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a truck bed structure, and more particularly to a truck bed structure in which a fan plate is rotatably attached to the load bed via a hinge.

(Prior art) In a truck loading platform structure in which a fan plate is rotatably attached to the loading floor via a hinge, the fan plate can be rotated below the loading platform and left hanging during cargo handling operations. It's becoming like that. In addition, with this loading platform structure, unless the fan plate is hung with a chain, etc.
The structure is not such that it can be held horizontally on the loading floor. Therefore, the fan plate can normally only be used standing perpendicular to the load bed or hanging down.

(Problem that the invention aims to solve) However, if the loading space of the truck bed is large, it is very convenient for organizing cargo during loading and unloading. The truck bed structure did not have a reliable means to hold the fan plate horizontally with respect to the bed.

The present invention was devised in view of the above-mentioned problems, and its purpose is to provide a truck bed structure that allows the fan plate to be held horizontally with respect to the bed as required. .

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a truck loading platform structure in which a fan plate is rotatably attached to the loading bed via a hinge, and which is provided outside the side of the loading bed. A horizontal holding device provided with an auxiliary arm member that slides forward and supports the lower surface of the fan plate during rotation of the fan plate to hold the fan plate in a horizontal state with the loading bed is provided below the loading bed. It has a configuration in which it is attached.

(Function) According to the above configuration, when the fan plate is held horizontally with respect to the load bed and is used, when the fan plate is opened with the auxiliary arm member pulled out, the fan plate becomes horizontal with respect to the load bed. At this position, the auxiliary arm member collides with the lower surface of the fan plate, and the auxiliary arm member can reliably hold the fan plate in a horizontal state. Therefore, the fan plate can be used in a horizontal position with respect to the cargo bed, thereby allowing cargo handling work to be carried out with the effective space of the cargo bed expanded. Furthermore, when the auxiliary arm member is pushed into the cargo bed, it can be used even when the fan plate is suspended from the cargo bed, similar to the structure of a normal truck bed.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIGS. 1 to 9 schematically show a truck loading platform structure according to an embodiment of the present invention.

Truck bed 1 shown in Figures 1 to 9
is mounted on the chassis frame 3 at the rear of the cabin 2. Furthermore, the loading platform 1 is constructed of a pair of side fanning plates 4 provided on the left and right sides of the loading platform 1, a rear fanning plate 5 provided at the rear, and a front iron plate (not shown) having a torii frame 6 at the front portion. 7 (see FIGS. 3 and 4). Further, each of the left and right side fan plates 4 is divided into two parts, a front side fan plate part 8 and a rear side fan plate part 9, at the front and rear. A hinge 11 is provided between each side fan plate part 8, 9, rear fan plate 5, and load bed 7, and the hinge 11 connects each side fan plate part 8, 9, rear fan plate 5, and load bed 7. They are rotatably connected, and each side fan plate part 8, 9 and rear fan plate 5 can be rotated to a state where they hang downward with respect to the cargo bed 7. Furthermore, the structure of this loading platform 1 is such that the front side fanning plate part 8 and the rear side fanning plate part 9 can be held in an open position on the way to be flush with the loading floor 7 by a horizontal holding device 12, which will be described later. ing.

With the structure of this loading platform 1, each side fan plate part 8, 9
When the rear fanning plate 5 is locked in an upright state relative to the loading bed 7, the rear fanning plate 5 is locked at one end of the rear fanning plate 5 and at each of the left and right rear side fanning plate parts 9. It is locked by a known locking means (not shown) provided between each side end. The lock at the other end of the rear side fanning plate 9 is located at the joint between one end of the front side fanning plate 8 and the rear side fanning plate 9, and straddles between the both side fanning plate parts 8 and 9. It is connected and locked to one end of the front side fan plate part 8 via a releasable shrimp lock 14 attached thereto. Furthermore, the lock at the other end of the front fan plate 8 is connected to the torii frame 6.
It is locked by a known locking means provided between the

When the lock means provided between the rear fan plate 5 and the rear fan plate 9 is released, only the rear fan plate 5 can be released independently, and the rear fan plate 9 and the rear fan plate 5 can be released independently. The locking means provided between the front side fan plate part 8
By releasing the shrimp lock 14 provided between the rear fan plate 9 and the rear fan plate 9, the rear fan plate 9 can be opened independently. Furthermore, when the lock means provided between the torii frame 6 and the front side fan plate part 8 and the shrimp lock 14 provided between the rear side fan plate part 9 are respectively released, only the front side fan plate part 8 is released. can be released. Also, if you select the location where you want to release these locking methods at the same time,
Of the front and rear side fan plates 8 and 9 that exist on the left and right, the loading platform 1
It is possible to open only the front and rear fan plates 8 and 9 provided on one side of the fan, or to release the front and rear fan plates 8 and 5 at the same time. Also, it is possible to freely set all of the rear fan plates 5 to a released state at the same time by combining them.

Next, the metal shrimp lock 14 provided at the joint between the front fan plate 8 and the rear fan plate 9 is shown in FIGS. 7 to 9 as an enlarged view of section A in FIG. Detailed structure is shown.

7 to 9, the lobster lock 14 is composed of a locking member 15, a base body 16, an engaging member 17 provided on the base body 16, an operating member 18, and the like.

The engaging member 15 is fixed to the upper wall on the side of the rear fan plate 9, and the tip of the locking member 15 is slightly bent toward the rear fan plate 5 side.

On the other hand, the base body 16 integrally includes an upper wall 19 and a pair of left and right side walls 20 formed by bending the left and right side portions of the upper wall 19 downward, respectively, and has a substantially U-shaped cross section. . Further, the dimension between the inner surfaces of the left and right side walls 20 is approximately equal to the thickness dimension of the front side fan plate 8 and the rear side fan plate 9, so that the base body 16 is connected to the front side fan plate 8 and the rear side fan plate. Part 9
When placed over the left and right side walls 20, the front fan plate 8 and the rear fan plate 9 are placed between the left and right side walls 20.
The upper part of each can be received respectively. The base body 16 is rotatably attached to the front fan plate 8 side via a pivot 21 passing through the left and right side walls 20 and the front fan plate 8. When rotated in the forward direction about the fulcrum, the upper part of the rear side fanning plate 9 at the joint with the front side fanning plate 8 is also covered, and the front side fanning plate 8 and the rear side fanning plate 9 are rotated. It is placed in a straddling position. Further, a locking member 15 is inserted through the upper wall 19 of the base body 16 and is engaged with the opposite side of the base body 16 when the base body 16 integrally covers the front side fan plate part 8 and the rear side fan plate part 9. A hole 22 is provided for allowing the tip of the stopper member 15 to protrude. Further, the end of the base body 16 on the rotation fulcrum side has a part 23 of the upper wall 19 cut out, and the base body 16 is rotated in the opposite direction about the pivot 21 as a fulcrum in this cutout part 23 as shown in FIG. It is designed so that it can rotate without colliding with the upper surface of the front fan plate part 8 when the front fan plate part 8 is rotated. Further, a pair of protrusions 24 protruding upward are provided on the upper wall 19 and positioned between the pivot 21 and the hole 22, and one end of the actuating member 18 is rotated between the protrusions 24 via the pivot 25. Installed as possible. A pivot shaft 26 is provided at the intermediate portion of the actuating member 18.
The engaging member 17 is rotatably attached via the. Further, an engagement hole 27 into which the locking member 15 is inserted is provided on the rotating tip side of the engagement member 17.

In the shrimp lock 14 constructed in this way, when the lock is released as shown by the solid line in FIG. 9, the engagement member 17 and the locking member 15 are disengaged,
The base body 16 rotates counterclockwise about the pivot 21, and the tip of the actuating member 18 is in contact with the upper surface of the front fan plate 8. In this state, the common lock between the front side fan plate 8 and the rear side fan plate 9 is released, and the common lock between the front side fan plate 8 and the rear side fan plate 9 is released. are in a separate state. Therefore, in this state, if the known locking means (not shown) provided at the other side end of the front side fan plate 8 or the rear side fan plate 9 is released, the front side fan plate 8 or the rear side fan plate 9 Only the side fan plate part 9 or both the front side fan plate part 8 and the rear side fan plate part 9 can be opened.

When the front side fan plate part 8 and the recess side fan plate part 9 are to be commonly locked with the shrimp lock 14 from the open state, first the base body 16 is rotated clockwise in FIG. 9. Then, the front side fan plate part 8
The base 16 is attached to a part of the rear side fan plate 9 adjacent to the
At the same time, the locking member 15 passes through the hole 22 and protrudes from the upper wall 19 of the base body 16. As the base body 16 rotates clockwise, the engaging member 17 and the actuating member 1
8 are also integrally displaced in the clockwise direction, and the engaging member 17
The distal end of the locking member 15 comes into contact with the upper wall 19 of the base body 16 and a part of the distal end of the locking member 15 enters the engagement hole 27 of the engagement member 17, as shown by the dashed line in FIG. However, in this state, the shrimp lock 14 is not yet completely locked. Next, from this state, when the actuating member 18 is tilted toward the front side fanning plate 8 using the pivot 25 as a fulcrum, the position of the pivot 26 moves toward the front side fanning plate 8. Along with this, the engaging member 17
also moves toward the front fan plate 8 side, and the entire engagement member 17 is attracted to the upper wall 19 of the base body 16. At the same time, the engaging portion 28 of the engaging member 17 is engaged with the locking member 15. At the final rotational position of the actuating member 18, the pivot 26 moves beyond the dead center and below the pivot 25, thereby being held in the locked state shown in FIGS. 7 and 8. With this lock, the front side fanning plate part 8 and the rear side fanning plate part 9 are securely fixed in a commonly connected state through locking engagement by the shrimp lock 14.

Therefore, in the truck bed structure using this shrimp lock 14, the front side fan can be moved even without the support between the front side fan plate part 8 and the rear side fan plate part 9, which was required in the conventional truck bed structure. The connection and fixation between the plate part 8 and the rear fan plate part 9 can be reliably achieved, and only one shrimp lock can be used as the locking means therebetween.

Also, from this locked state, the front side fan plate 8
To release the lock between the rear fan plate 9 and the rear fan plate 9, perform the opposite operation, that is, rotate the actuating member 18 clockwise about the pivot 25 in FIG. The engagement between the locking member 15 and the locking member 15 is released, and the state shown by the dashed line in FIG. 9 is achieved. Next, the engagement member 17 is rotated upward about the pivot 26 to completely disengage the engagement member 15 and the engagement hole 27, and in this state, the base body 16 is rotated counterclockwise to the pivot 21. When rotated about the fulcrum, the state shown by the solid line in FIG. 9, that is, the unlocked state can be achieved. In this state, the front side fan plate 8
Alternatively, the rear side fanning plate 9 can be opened alone, or both the front side fanning plate 8 and the rear side fanning plate 9 can be opened. Furthermore, since this loading platform structure does not have the supports used in conventional loading platform structures, even if the front side fanning plate section 8 and the rear side fanning plate section 9 are opened at the same time, the work of attaching and detaching the columns is not necessary. unnecessary.

Next, the horizontal holding device 12 that can hold the opened front side fanning plate part 8 and rear side fanning plate part 9 in a substantially horizontal state with respect to the loading bed 7 will be explained.

The horizontal holding devices 12 are provided on both left and right sides of the truck platform 1, as shown in FIGS. 1 and 2, respectively. In addition, three locations are provided corresponding to the front side fanning plate portion 8 and rear side fanning plate portion 9, and they are provided at six locations on one side and a total of 12 locations on both sides. Each horizontal holding device 12 has substantially the same structure at each location, and the detailed structure of this horizontal holding device 12 is shown in FIGS. 3 to 6.

As is clear from FIGS. 3 to 6, each horizontal holding device 12 is provided on each horizontal joist 29 fixedly arranged on the chassis frame 3. A floor plate 30 forming the loading floor 7 is attached to the horizontal joist 29, and a floor frame member 31 that frames the outer wall of the loading floor 7 is attached to the end of the horizontal joist 29. The horizontal joist 29 is formed in the shape of a hollow quadrangular prism, and a wide slit 3 is provided on one side wall 32.
3 is formed across both ends. On the other hand, the floor frame member 31 has a horizontal joist 2 provided with a horizontal holding device 12.
A rectangular hole 34 is provided corresponding to the end face of 9. A portion 13 at the upper edge of the rectangular hole 34 is bent at a substantially right angle and protrudes horizontally into the horizontal joist 29. An auxiliary arm member 35 similarly formed in the shape of a hollow quadrangular prism is slidably disposed inside the horizontal joist 29 through the rectangular hole 34.

Both ends of this auxiliary arm member 35 are open, and a notch 38 cut into a substantially V-shape from the end is provided in the opening located in the horizontal joist 29 in a pair of side walls 36 and 37, respectively. (The side wall 36 is not shown in FIGS. 3-4, and therefore the notch 38 on the side wall 36 is not shown). In addition, a shielding plate 39 is inserted into the other opening and fixed by spot welding or the like, and this shielding plate 3
9, the auxiliary arm member 35 is in a partially closed state. A stopper pin 4 that passes through the upper wall 40 and lower wall 41 of the auxiliary arm member 35 and slides up and down is provided between the shielding plate 39 and the outer opening end.
2, and this stopper pin 42 also serves as a handle. Also, this stopper pin 42
A pair of regulating pins 43 and 44 are provided inside the auxiliary arm member 35 and spaced apart from each other in the vertical direction. When the lower end of the stopper pin 42 is retracted into the lower wall 41 of the auxiliary arm member 35, one of the pair of control pins 43, 44 hits the inner surface of the upper wall 40, and the stopper pin 42 hits the inner surface of the upper wall 40.
prevents it from moving further upward. The other regulating pin 44 comes into contact with the inner surface of the lower wall 41 to regulate the amount by which the lower end of the stopper pin 42 protrudes downward from the lower wall 41. Further, the auxiliary arm member 35 has a side wall 36 and a side wall 37.
An engagement hole 45 and an engagement hole 46 are provided in the lower wall 41 so as to be spaced apart from each other in the longitudinal direction, and a stopper 57 is provided on the lower surface of the lower wall 41. This stopper 5
When the auxiliary arm member 35 is pulled out, it collides with a locking piece 60 fixed to the inner surface of the horizontal joist 29 near the open end, thereby regulating the amount that the auxiliary arm member 35 can be pulled out. Further, as shown in FIG. 4, this stopper 57 is used to prevent the front side fanning plate 8 and/or the rear side fanning plate 9 from being stopped by the buffers attached to the outside of each side fanning plate 8 and 9. The auxiliary arm member 35 can be pulled out until the tip of the auxiliary arm member 35 collides with the lower side of the member 58. When each side fan plate part 8, 9 is opened with this auxiliary arm member 35 being pulled out, each side fan plate part 8, 9 is in a horizontal state with respect to the loading bed 7.
9 is rotated, the tip of the auxiliary arm member 35 comes into contact with the lower side of each side fan plate part 8, 9, and each side fan plate part 8,
9 can be received and held by the auxiliary arm member.

Further, inside the horizontal joist 29 that receives the auxiliary arm member 35 through the rectangular hole 34 of the floor frame member 31, a guide rod 47 and a regulating member 48 whose both ends are supported by both side walls 36 and 37 are provided. This guide rod 47
is in contact with the auxiliary arm member 35 and the upper wall 40, and the horizontal joist 2
9 to guide the sliding movement of the auxiliary arm member 35. On the other hand, the regulating member 48 is
is pushed into the horizontal joist 29 so that the outer surface of the floor frame member 31 and the tip of the auxiliary arm member 35 are substantially flush with each other, and the auxiliary arm member 3 is engaged in the notch 38.
5, and this engagement limits the amount of push of the auxiliary arm member 35 into the horizontal joist 29. Also, on the lower wall 49 of the horizontal joist 29, this lower wall 4
The adjustment bolt 50 is attached by being screwed into a weld nut 51 fixed in correspondence with the through hole 61 of 9. The tip of this adjustment bolt 50 is the horizontal joist 29
This contact supports the lower wall 41 of the auxiliary arm member 35, and at the same time, the guide rod 47 clamps the auxiliary arm member 35 to prevent it from rattling. . If play occurs between the guide rod 47 and the adjustment bolt 50, the auxiliary arm member 35 is pressed against the guide rod 47 when the adjustment bolt 50 is screwed in, thereby removing the play. Furthermore, a locking plate 52 is provided on the side wall 32 of the horizontal joist 29 in which the slot 33 is provided, in a state that straddles the slot 33, and this locking plate 52 has a locking member 53 bent into a substantially L-shape. A hole 54 formed by a notch is provided for insertion and locking. Further, in correspondence with this hole 54, a horizontal joist 2
The side wall 55 of 9 is provided with an engagement hole 56 for receiving and engaging the tip of the locking member 53 inserted through the hole 54 on the opposite side of the side wall 32. When the auxiliary arm member 35 is pushed into the horizontal joist 29 until it is regulated by the regulating member 48, the hole 54 and the engaging hole 56 are placed in correspondence with the engaging hole 45. When the auxiliary arm member 35 is pulled out until it comes into contact with the 60 stopper 57, it is provided in a position that corresponds to the engagement hole 46. Further, with the engagement hole 45 corresponding to the hole 54 and the engagement hole 56, the lock member 53 is inserted into the hole 5.
4, 45, and 56, the auxiliary arm member 3
When the lock member 53 is inserted through the holes 54, 46, and 56 with the engagement hole 46 corresponding to the hole 54 and the engagement hole 56, the auxiliary arm member 35 is pushed in. This prevents the auxiliary arm member 35 from being held in the pulled out state.

When this horizontal holding device 12 is not used, it is pushed into the horizontal joist 29 until the tip of the auxiliary arm member 35 is approximately flush with the outer surface of the floor frame member 31, and held in the state shown in FIG. I'm starting to keep it. In the state shown in FIG. 3, the notch 38 of the auxiliary arm member 35 is abuttingly engaged with the regulating member 48, and the engagement hole 45 is in a state corresponding to the hole 54 and the engagement hole 56. , the tip of the locking member 53 is the hole 5
4. It is inserted through the engagement hole 45 and the engagement hole 56. The stopper pin 42 protrudes from the lower wall 41 of the auxiliary arm member 35 under its own weight and is in contact with the inner surface of the lower wall 49 of the horizontal joist 29. The engagement between the stopper pin 42 and the locking piece 60 and the locking operation of the locking member 53 keep the auxiliary arm member 35 pushed into the horizontal joist 29. Therefore,
When the front side fanning plate 8 and/or the rear side fanning plate 9 are opened in this state, the front side fanning plate 8 and/or the rear side fanning plate 9 are opened.
Alternatively, the rear side fan plate part 9 does not stop at a position horizontal to the loading floor 7, but rotates approximately 180 degrees until it hangs below the loading floor 7 and opens.

Next, when using the front side fanning plate 8 and/or the rear side fanning plate 9 in an open state until they are parallel to the loading bed 7, the tip of the locking member 53 is inserted into the hole 5.
4. First, the auxiliary arm member 35 is unlocked from the horizontal joist 29 by pulling it out from the engagement hole 45 and the engagement hole 56. Next, insert your hand through the opening at the tip of the auxiliary arm member 35, grasp the stopper pin 42, and lift the stopper pin 42 by sliding it upward until the regulating pin 43 comes into contact with the inner surface of the upper wall 40. Then, the lower end of the stopper pin 42 is connected to the lower wall 41.
The locking state between the stopper pin 42 and the locking piece 60 is released. Next, by pulling the auxiliary arm member 35 outward while grasping the stopper pin 42 in this state, the auxiliary arm member 35 can be pulled out from inside the horizontal joist 29 until the stopper 57 and the locking piece 60 collide.
In addition, with the auxiliary arm member 35 pulled out, the lock member 53 that was previously pulled out is inserted into the hole 54 and into the engagement hole 4.
6. When commonly inserted into the engagement hole 56, the horizontal joist 29
The auxiliary arm member 35 can be locked against the load carrier 1, and thereby the auxiliary arm member 35 can be held in a state in which it protrudes in the lateral direction of the loading platform 1. This operation is performed using a horizontal holding device 12 provided at a location corresponding to the front side fanning plate 8 and/or the rear side fanning plate 9 that are held in a horizontal state with respect to the loading bed 7.
Do it every time. Therefore, the front fan plate portion 8 and/or the portion where the auxiliary arm member 35 is pulled out
Alternatively, when the rear side fan plate part 9 is opened to a state where it is rotated approximately 90 degrees, the auxiliary arm member 3
5 collides with the outer surface of the front side fanning plate 8 and/or the rear side fanning plate 9, and the front side fanning plate 8 and/or the rear side fanning plate 9 are supported by the auxiliary arm member 35. state and is held in a horizontal state with the loading bed 7.

When storing the auxiliary arm member 35 within the horizontal joists 29 again, the front side fanning plate 8 and/or the rear side fanning plate 9 are rotated back upwards, and the front side fanning plate 8 and /Or close the rear fan plate 9 to lock it again. Next, the auxiliary arm member 3
The stopper pin 42 is grasped from the opening at the tip of the upper wall 40, and the stopper pin 42 is slid upward until the regulation pin 43 comes into contact with the inner surface of the upper wall 40, and the stopper pin 42 is raised. In this state, when the auxiliary arm member 35 is pushed into the horizontal joist 29 until the notch 38 and the regulating member 48 are brought into abutting engagement, the auxiliary arm member 35 is slid into the horizontal joist 29 again. When the stopper pin 42 is released in this stored state, the stopper pin 42 is released due to its own weight.
2 descends and comes into contact with the lower wall 41 of the horizontal joist 29, and is engaged with the locking piece 46 to be prevented from coming off. Next, when the locking member 53 is inserted through the hole 54, the engagement hole 45, and the engagement hole 56, the locking member is more securely locked.

Therefore, in this platform structure, the horizontal holding device 1
2, the front side fanning plate part 8 and/or the rear side fanning plate part 9 are opened to the horizontal state where they are flush with the loading bed 7, and the effective space of the loading bed 7 is enlarged. Alternatively, it can be used in an open state where it hangs below the cargo bed 7. This makes it easier to load and unload cargo, improving work efficiency. Moreover, the uses of the loading platform 1 are expanded and its functionality is improved.

In the above embodiment, the horizontal holding device 12 is provided on the left and right sides of the loading platform 1, and the front side fanning plate portion 8 and the rear side fanning plate portion 9 on the left and right sides where the horizontal holding device 12 is provided are provided.
Although a structure has been disclosed in which only the cargo bed 1 can be held in a horizontal state with the cargo floor 7, a horizontal holding device 12 is also provided at the rear of the cargo bed 1, and the rear fan plate 5 is also held in a horizontal state with the cargo bed 7 in the same manner. It is good to have a structure.
Further, a structure in which the horizontal joist 29 is used as a member for slidably holding the auxiliary arm member 35 has been disclosed, but this does not necessarily have to be the horizontal joist 29, and another holding member may be provided in place of the horizontal joist 29. Also good.

In addition, in the structure of the loading platform 1 in the above embodiment, the left and right side fan plates 4 are connected to the front side fan plate part 8 and the rear side fan plate part 9.
A releasable shrimp lock 1 is installed between the front side fan plate part 8 and the rear side fan plate part 9.
4 has been disclosed, but the side fan plate 4 does not necessarily have to be divided into front and rear parts. However, by dividing the side fan plate 4 into two parts, a front side fan plate part 8 and a rear side fan plate part 9,
Furthermore, if a common locking structure is used with one shrimp lock 14, it is also possible to use a combination in which only one of the front and rear side fan plates is in a horizontal state, and the other side fan plate is used in a closed state. This makes it easier to load and unload cargo, and further improves work efficiency. Moreover, the applications can be expanded and the functionality can be further improved. In addition, when this one shrimp lock 14 is used in combination with a common connection structure, the front side fan plate 8
When the rear fan plate 9 and the front fan plate 9 are placed in a horizontal state at the same time, it is not necessary to provide a support at the joint between the front fan plate 8 and the rear fan plate 9, so the work to remove this support is unnecessary. This can further improve work efficiency and reduce costs at the same time.

(Effect of the invention) As explained above, according to the truck bed structure according to the present invention, when the fan plate is held horizontally with respect to the loading floor, the fan plate is held with the auxiliary arm member pulled out. When opened, when the fan plate is horizontal to the loading bed, the auxiliary arm member supports the bottom surface of the fan plate, allowing the fan plate to be held in a horizontal position. The effective space can be expanded. Furthermore, by pushing the auxiliary arm member into the cargo bed, the fan plate can be used in a state that it is suspended from the cargo bed in the same manner as in the cargo bed structure of a normal truck. As a result, cargo handling work becomes easier and work efficiency can be improved. It also expands the uses of truck beds and improves their functionality.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing a truck platform structure according to an embodiment of the present invention, Fig. 2 is a schematic rear view of the same platform structure, and Fig. 3 is a schematic configuration of a horizontal holding device in the same platform structure. 4 is a cross-sectional view showing the schematic configuration of the above horizontal holding device in a used state, and FIG. 5 is taken along line B-B in FIG. 3.
A plan view of the main part seen along the line, Figure 6 is C in Figure 3
7 is an enlarged plan view of section A in FIG. 1, FIG. 8 is an enlarged side view of the portion shown in FIG. 7, and FIG. 9 is a sectional view taken along line C. FIG. 3 is an enlarged side view showing the lock in the unlocked state. 1... Loading platform, 4... Side fan plate, 5... Rear fan plate, 7
...Load bed, 8...Front side fanning plate part, 9...Rear side fanning plate part, 11...Hinge, 12...Horizontal holding device, 14...Shrimp lock, 29...Horizontal joist, 35
...Auxiliary arm member.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A truck loading platform structure comprising a fan plate rotatably attached to a load bed via a hinge, wherein the fan plate slides outward from a side surface of the load bed. The present invention is characterized in that a horizontal holding device is attached to the lower side of the loading bed, and the horizontal holding device is provided with an auxiliary arm member that supports the lower surface of the fanning plate in the middle of rotation and holds the fanning plate in a horizontal state with the loading bed. Truck bed structure. (2) The truck bed structure according to claim 1, wherein the horizontal holding device has the auxiliary arm member slidably attached to the horizontal joist.