Temporary rain shelter structure for cargo trucks

Abstract

To provide a rain protection structure for preventing a situation where a cargo and a transport agent are wet when the cargo is delivered in the rain.SOLUTION: A cargo truck includes a load-carrying platform with a roof, an opening / closing door provided in a cargo take-out port at the rear part of the load-carrying platform, a scaffold which extends backward in the bottom of the cargo take-out port of the load-carrying platform and vertically moves up and down, and a roof structure stretched above the scaffold lift, wherein the roof structure includes a blow-return structure that contains compressed air and extends frontward, a roof cloth 132 is unwound from a storage roll 131 by blowing of air to the blow-return structure, extends and is stretched, on the other hand, the extension state of the extending blow-return structure is released, and the roof cloth 132 is rewound to the storage roll 131.SELECTED DRAWING: Figure 8c

Description

Technical Field

[0001] The present invention relates to a temporary rain protection structure in a cargo truck for transporting goods.

Background Art

[0002] In a cargo truck for transporting goods, in order to facilitate the transfer of goods from the loading platform, a scaffold lift that moves up and down is attached to the rear of the loading platform, enabling easy unloading of goods from the loading platform and loading of goods onto the loading platform. However, when transferring goods on a rainy day, if there is no awning covering the lift on the rear loading platform of the truck at the place where the goods are carried in, the goods will get wet and the transporter will get wet. Therefore, various rain protection structures have been proposed.

[0003] As this structure, while supporting a tent fabric with arms that are folded back and forth in both width directions, an electric motor is attached to the tip thereof, and the tent fabric is wound up and unwound by the electric motor to project and provide a tent roof above the opening door at the rear of the roofed loading platform. A rain protection roof structure has been proposed (Patent Document 1). However, the structure of winding out and winding back the tent fabric with an electric motor at the tip of the roof while supporting it with folding arms on both sides becomes complicated, and a firm support structure for the tip electric motor device is required. Therefore, as a rain protection device for an opening and closing door that utilizes the opening operation of a double-leaf opening and closing door to expand and stretch a rain protection sheet behind the opening of a storage and prevent rainwater from hitting goods and the like during rainfall, the following rain protection devices have been proposed. The first is the device shown in FIG. 11. The rain protection sheet plate 6a has a certain degree of rigidity, and the rain protection sheet plate 6a is substantially square. The corner end A and the right corner end D are locked to both ends of the upper end 3a of the opening and closing door 3. When the opening and closing door 3 is opened, the suspended corner end C, which is the free end of the expanded rain protection sheet plate 6a, is held in a suspended state in the air in a hollow shape by its rigidity while hanging downward due to its own weight. As a result, the rainwater on the rain protection sheet plate 6a mainly flows to the suspended corner end C side and falls, and the rain protection sheet is arranged between the opening and closing doors (Patent Document 2: Japanese Unexamined Patent Application Publication No. 2018-150037) On the other hand, as shown in Fig. 12, the second rain shield device extends a rain shield sheet 11 with rod bodies 13a and 13b attached to both sides along the guide portion 6, and is attached to the opening and closing doors 4 and 5 via string bodies 14a and 14b connected to the rod bodies 13a and 13b on both sides. When these opening and closing doors 4 and 5 are opened 90 degrees, thereby, the rod bodies 13a and 13b are pulled toward the opening and closing doors 4 and 5 sides and lifted, and thus the rain shield sheet 11 is lifted together and stretched in suspension between the rod bodies 13a and 13b, and the rainwater on the rain shield sheet 11 falls from the lower side (Patent Document 3).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0005]

Patent Document 2

[0006]

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, in the conventional structure where the rain shield sheet or the rain shield is tensioned and relaxed by a suspension string when the cargo bed door is opened and closed, and the roof sheet is installed, without using an electric motor, a simple structure can be achieved. However, in order to use a suspension string to tension the roof material when the opening and closing door is in a half-open position, the opening and closing door cannot be opened at an opening angle of 90° or more, and it cannot be adopted for a truck that raises and lowers a scaffold lift between the opening and closing doors. In addition, since the rain shield sheet is installed with a suspension string, the support structure is fragile. Therefore, without using an electric motor device at the roof tip, it is an object to provide a structure that can temporarily install the roof structure as quickly as possible, and can also temporarily install a rain shield roof eaves above the scaffold lift even in the case of a double-leaf door that opens the door 180° or more to the left and right or a top-hinged upward-opening door.

Means for Solving the Problems

[0008] As a result of intensive research, the inventor has found that although the mechanism for extending the roof itself formed from the tent fabric forward is a problem, if a structure for extending the roof part with a blow-back structure is formed, the extension and contraction operation of the roof becomes easy. Moreover, when a blow-back structure is provided as a telescoping means separately from the roof cloth itself, if the roof cloth storage roll is biased by a coil spring so that the roof cloth is normally wound and stored, together with the blow-back structure, the roof structure can be easily installed and stored by blowing air, and it was made by paying attention to the fact that it can quickly respond to sudden rainfall. In a cargo truck comprising a roofed cargo bed 110 of a truck 100, an opening and closing door 112 provided at a cargo loading and unloading opening 111 at the rear of the cargo bed, a scaffold lift 120 extending rearward and moving up and down at a lower part of the cargo loading and unloading opening 112 of the cargo bed, and a roof structure 130 installed above the scaffold lift 120 The roof structure 130 includes a roof cloth storage roll 131 disposed above the luggage outlet 112 and extending in the left - right width direction, a long roof cloth 132 that is constantly biased in the winding direction around the roll, is stored while being pulled out from the roll, and is stretched rearward of the loading platform so as to cover above the scaffold lift 120, a tip support frame 133 extending in the left - right width direction at the leading end of the drawn - out roof cloth 132, and a roof awning frame 140 and / or an upright support 141 that can stand at the rear end position of the scaffold lift together with the tilting of the scaffold lift 120 from the upright position to the horizontal position, which is connected to both ends of the support frame 133 and stretches together with the roof cloth 132 drawn out from the roll, and supports the roof cloth above the scaffold lift 20 while shrinking with the rewinding to the roll. The roof cloth 132 is provided with a blowing - back structure 150 that extends forward by blowing air. By blowing air into the blowing - back structure, the roof cloth 132 is unwound from the storage roll 131, extended and stretched. On the other hand, by releasing the extended state of the extended blowing - back structure 150, the roof cloth 132 is rewound to the storage roll 131. This is a temporary rain - proof structure for a cargo truck.

Advantages of the Invention

[0009] According to the present invention, since the roof structure is provided with a blowing - back structure in which a long roof cloth expands and extends by blowing air, the long roof cloth can be quickly unwound from the storage roll by blowing air. The unwound roof cloth can be firmly temporarily installed as a rain - proof above the scaffold lift by the roof awning frame 140 and / or the upright support 141 that can stand at the rear end position of the scaffold lift together with the tilting of the scaffold lift 120 from the upright position to the horizontal position. Also, although the roof cloth may be easily wound up by opening the blowing - back structure, it is preferable that the roof cloth is constantly spring - biased in the winding direction into the storage roll, and the winding is performed by the combined operation of both.

[0010] As shown in Fig. 8(c), the blow-back structure 150 includes a long cylindrical body 151 that expands by blowing air, and a linear winding spring 152 that extends longitudinally inside the cylindrical body and is biased to be wound in a spiral shape in its normal state. Therefore, in its normal state, the cylindrical body is in a wound state by the linear winding spring 152. When air is blown in, the cylindrical body 150 extends forward from the wound state, and when the blowing of air stops, the cylindrical body 151 returns to the wound state by the linear winding spring.

[0011] As shown in Fig. 3, the roofing cloth may be pulled out from the storage roll by the winding operation of the rope 172 wound around the winding roller 171, and may be used instead of or in cooperation with the blow-back structure. The roofing cloth 132 is pulled out and extended from the roll 30 to the rear of the loading platform by the winding of the rope together with the upright support of the scaffolding lift 120, and it is also possible to wind the roofing cloth 32 around the storage roll 31 when the upright support 141 is stored.

[0012] It is preferable to provide a eaves support frame 140 instead of the upright support 141 to support the roofing cloth 132. (A) A support frame structure that forms a roughly X shape that expands and contracts back and forth by changing the crossing angle of the support rods as the roofing cloth expands and contracts back and forth, or (B) A support frame structure that forms a pair of foldable Z shapes that expand and contract as the roofing cloth expands and contracts is preferable.

[0013] Instead of always maintaining the extended state of the roof by blowing air, it is also possible to hold the support frame of the extended roof with an electromagnet for the roofing cloth 132. It is preferable to fix it using an electromagnet during extension. This is because when the roofing cloth 132 is stored, the electromagnet device 160 is stopped and it can be returned to the wound state by the biasing force of the blow-back structure 150 or the storage roll 131.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8a

Figure 8b

Figure 8c

Figure 9

Figure 10

Figure 11

Figure 12

Mode for Carrying Out the Invention

[0015] As shown in FIG. 1, the present invention includes, as a first form, an upward-opening door 112 at the rear 111 of the loading platform 100 (a). After the roof structure 130 is taken out from the storage case 113 from the upward-opening door 112 (b), the roof structure projects above the scaffold lift 120 by a blow-back structure (not shown) and is temporarily installed while being supported by an eaves frame (c). Type 1, as shown in FIG. 2, includes an upward-opening door 112 at the rear 111 of the loading platform 100 as a second form (a). After the roof structure 130 is taken out from the storage case 113 from the upward-opening door 112 (b), the roof structure is temporarily installed above the scaffold lift 120 by a blow-back structure (not shown) and is supported and stretched by an eaves frame. In addition, after the roof structure 130 is stretched above the scaffold lift 120, the tip of the roof structure is supported by a column 141 standing at the tip of the lift 120 (c). Type 2, as shown in FIG. 3, includes a sliding door 112 at the rear 111 of the loading platform 100 as a third form (a). After the roof cloth 132 is pulled out from the storage roll 131 provided on the upper part of the loading platform via the rope 172 (b), the roof cloth is pulled out above the scaffold lift 120, and further supported by a support roll 171 provided at the upper end of the column 141 standing at the tip of the lift 120, and the roof cloth 132 is supported (c). It is divided into type 3.

[0016] As shown in FIG. 4, the roof structure 130 is stored in a storage case 113 provided on the roof behind the loading platform. When the upward-opening door 112 is opened, it slides from the storage position (1) to the extraction position (2) via the draw-out rail 112a provided on its lower surface and is taken out. From there, the roof cloth 132 is pulled out from the storage roll 131 by the blow-back structure 150, supported by the eaves frame 140, and stretched and installed on the upper part of the lift. 132a is the droop at the roof tip and droops downward as the roof cloth 132 is pulled out. As a result, as shown in FIG. 5, the roof structure is temporarily installed (4).

[0017] FIGS. 6 and 7 show the structure of the eaves frame of the roof of the present invention. In FIG. 6, the eaves support frame 140 is composed of a pair of support rods 142, 142 that support and stretch the roof cloth 132. (A) Each support rod 142 is long, and the tip is the tip support of the roof cloth 32 hold On the frame 133 side, it is pivotally attached to both ends 133a, 133a respectively. On the other hand, they cross each other, and the rear end slides along the slide means extending along it on the roof cloth storage roll 131 side, forming a roughly X shape that expands and contracts back and forth by changing the crossing angle of the support rods 142 along with the front-back expansion and contraction state (3)(4)(5) of the roof cloth. Or, as shown in FIG. 7, (B) it is composed of a pair of support rods 142, 142 in the shape of a "く" that bend and expand and contract at the center. The tip of each support rod is pivotally attached to both ends 133a, 133a on the tip support frame 133 side of the roof cloth 132 respectively. On the other hand, the rear end of the other support rod slides on the roof cloth storage roll side by the slide means extending longitudinally along it, forming a pair of foldable "く" shapes that expand and contract along with the expansion and contraction (3)(4)(5) of the roof cloth.

[0018] The blowing-back structure 150 is shown in Fig. 8 in terms of its operation, moving from the contracted state with the cylinder body in (a) being wound, through the intermediate state in (b), to the expanded state where it extends forward of the cylinder body in (c). As shown in Fig. 8(c), this blowing-out structure comprises a long cylinder body 151 that expands by blowing air into it, and a linear winding spring 152 that extends longitudinally and is stretched inside it, and is biased to be wound in a spiral shape under normal conditions. Under normal conditions, the cylinder body is in a wound state by the linear winding spring 152 (a), the cylinder body extends forward through the state in (b) by blowing air into it (c), and when the blowing of air stops, the cylinder body has the function of returning to the wound state (a) by the linear winding spring.

[0019] The blowing-back structure 150 and the roof cloth 132 are connected such that the tip bar 153 of the blowing-back cylinder body 151 is connected to the roof tip frame 133 via the rotating disk 134. As the cylinder body 151 extends, the tip bar 153 rotates, but since it is connected to the roof tip frame 133 via the rotating disk 134, the roof cloth 132 is pulled forward together with the cylinder body 151. An electromagnet device is provided on any one of the tip support frame 133 of the roof cloth 132, a part or all of the eaves frame 140, or the tip of the upright support 141. As the roof cloth 132 extends, the magnetic force of the electromagnet device functions to fix the extended state of the extended roof cloth 132. On the other hand, when the roof cloth 132 is being stored, the electromagnet device is stopped, and it returns to the wound state by the biasing force of the blowing-back structure 150 or the storage roll 131.

[0020] Fig. 9 shows that it is also possible to support the roof cloth 132 by the blowing-back structure 150 and the upright support 141 without using the eaves frame to support the roof cloth 132. In that case, the tip frame 133 of the roof cloth 132 can be hooked to the tip of the upright support 141, and the roof cloth 132 can be stretched upward by cooperation with the blowing-back structure 150 to temporarily install the roof structure.

[0021] Also, as shown in FIG. 10, a storage roll 131 for storing the roof cloth 132 is installed on the rear roof of the loading platform 100. From here, the roof cloth 132 is connected to a winding rope 172, pulled out through the rope 172, and while supporting the roof cloth 132 with a support roll 171 passed to the tips of a pair of upright columns 141, the winding rope 172 is wound with the winding roll 171 to stretch the roof cloth 132 upward for lifting, and the roof may be temporarily installed in this way.

Claims

1. In a cargo truck comprising a roofed platform (100), an opening / closing door (112) provided at a cargo loading / unloading opening (111) at the rear of the platform, a scaffolding lift (120) that extends rearward and moves up and down below the cargo loading / unloading opening (111) of the platform, and a roof structure (130) stretched above the scaffolding lift (120), the roof structure (130) includes: (a) a roof cloth storage roll (131) disposed at the upper part of the cargo loading / unloading opening (111) and extending in the left-right width direction; (b) a long roof cloth (132) that is constantly biased in the winding direction of the roll, stored while being pulled out from the roll and stretched rearward of the platform so as to cover above the scaffolding lift (120); (c) a tip support frame (133) extending in the left-right width direction at the leading end of the unrolled roof cloth (132); and (d) a roof awning frame (140) that is connected to both ends of the support frame (133) and stretches the roof cloth above the scaffolding lift (120) that extends and contracts together with the roof cloth (132) pulled out from the roll, and / or an upright support (141) that can stand at the rear end position of the scaffolding lift while being tilted from the upright position to the horizontal position of the scaffolding lift, the roof cloth (132) is provided with a blowing-back structure (150) that extends forward by blowing air, and by blowing air into the blowing-back structure, the roof cloth (132) is unrolled from the storage roll (131), extended and stretched, while the extended state of the extended blowing-back structure (150) is released to roll back the roof cloth (132) to the storage roll (131). A temporary rain-proof structure for a cargo truck is characterized by this.

2. The blowing-back structure (150) is a blowing-back structure comprising a long cylindrical body (151) that expands by blowing air and a linear winding spring (152) that is stretched longitudinally inside the cylindrical body and biased to be wound in a spiral shape in a normal state. In a normal state, the cylindrical body is in a wound state by the linear winding spring, the cylindrical body extends forward from the wound state by blowing air, and the cylindrical body returns to the wound state by the linear winding spring when the blowing of air stops. The structure according to Claim 1 is provided with this function.

3. A cargo truck comprising a roofed platform (100), an opening / closing door (112) provided at a cargo loading / unloading opening (111) at the rear of the platform, a scaffold lift (120) that extends rearward and moves up and down below the cargo loading / unloading opening (111) of the platform, and a roof structure (130) stretched above the scaffold lift (120). The roof structure (130) includes: (a) a roof cloth storage roll (131) disposed to extend in the left-right width direction above the cargo loading / unloading opening (111); (b) a long roof cloth (132) that is constantly biased in the winding direction of the roll, stored on one hand, pulled out from the roll, and stretched rearward of the platform so as to cover above the scaffold lift (120); (c) a tip support frame (133) extending in the left-right width direction at the leading end of the unrolled roof cloth (132); and (d) a roof awning frame (140) that is connected to both ends of the support frame (133) and supports the roof cloth above the scaffold lift (120) so as to extend together with the roof cloth (132) pulled out from the roll and contract together with the rewinding of the roll, and / or an upright support (141) that can be erected at the rear end position of the scaffold lift while being tilted from the upright position of the scaffold lift (120) to the horizontal position. The temporary rain shelter structure of the cargo truck is characterized in that the roof cloth (132) is provided with a rope (172) wound around a take-up roller (173) provided on the upright support (141), and when the scaffold lift (120) is erected, the roof cloth (132) is pulled out from the roll (131) to the rear of the platform and extended by winding the rope, while when the upright support (141) is stored, the roof cloth (132) is wound around the storage roll (131).

4. The above-mentioned eaves support frame (140) is composed of a pair of support rods (142), (142) that support and stretch the roof cloth (132). (A) Each support rod is long, and its tip is pivotally attached to both ends (133a), (133a) on the side of the tip support frame (133) of the roof cloth (132). While crossing each other, its rear end slides along a slide means extending along the roof cloth storage roll side, and expands and contracts back and forth by changing the crossing angle of the support rods as the roof cloth expands and contracts front and back, forming a roughly X-shaped support frame structure. Or (B) it consists of a pair of support rods (142), (142) in a "く" shape that bend and expand and contract at the center. The tip of each support rod is pivotally attached to both ends (133a), (133a) on the side of the tip support frame (133) of the roof cloth (132). While the rear end of the other support rod slides on the roof cloth roll side by a slide means extending longitudinally along it, it forms a pair of foldable "く" shaped support frame structures that expand and contract as the roof cloth expands and contracts. The temporary rain shelter structure according to claim 1 or 3.

5. Any one of the tip support frame (133) of the roof cloth (132), a part or all of the eaves frame (140), or the tip of the upright support (141) is provided with an electromagnet device. Along with the extension of the roof cloth (132), the magnetic force of the electromagnet device is functioned to fix the extended state of the extended roof cloth (132). While when the roof cloth (132) is stored, the electromagnet device is stopped and it returns to the wound state by the urging force of the blowing-back structure (150) or the storage roll (131). The structure according to claim 1 or 3.

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