CN201525528U - A foldable hollow board turnover box - Google Patents

Abstract

The utility model discloses a collapsible hollow board turnaround case, which includes a first board, a second board, a third board, a fourth board and four hinges, wherein the first board, the second board, the third board and the fourth board are all plastic hollow boards; the first board and the second board have the same structure, and in fore and after parallel arrangement; the third and the fourth board have the same structure, and in right and left parallel arrangement; the fourth boards are formed in a front, a rear, a left, and a right boards and four top caps and four bottom caps, three to eight rivet mounting holes are respectively provided on both sides of the front, the rear, the left, and the right boards, and corresponding rivet mounting holes are provided on the four hinges; the first board, the second board, the third board and the fourth board are riveted and fixed through four hinges and rivets, to connect together to form a rectangle box body; and protection strips made of PE cotton is adhered on the part of the four hinges located inside the box body to perform anti-collision and anti-scratching protection to the articles stored in the box body. The collapsible hollow board turnaround case has simple structure, convenient folding and smaller occupation space.

Description

A foldable hollow board turnover box

technical field

The utility model relates to a packing box, in particular to a foldable turnover box.

Background technique

The turnover box is a kind of packaging box widely used in various occasions. As a carrier of logistics, in daily life, turnover boxes can be used for transportation, turnover and storage of commodities; in industrial production, especially in assembly line operations, turnover boxes are used more frequently, and are widely used in precision injection molding products and semi-finished products. Storage of machinery, electronics and other products.

Existing turnover boxes can be divided into fixed type and foldable type from the structure. The fixed turnover box is relatively reliable and suitable for storing heavy items, but it takes up a lot of space during the storage and transportation of empty boxes, resulting in low storage utilization and high transportation costs. Therefore, a foldable turnover box has appeared, which achieves the effect of being foldable when empty, overcomes the above-mentioned shortcomings, and is suitable for storing lighter items, such as electronic products and injection-molded products. Chinese patent document CN1342592 discloses a collapsible plastic turnover box. This product uses a movable connection mechanism to realize the folding of the box body, but the structure is too complicated, resulting in relatively large manufacturing costs, heavy weight and inconvenient handling.

Existing turnover boxes can be roughly divided into cardboard boxes, wooden boxes, hard plastic boxes and plastic hollow boxes from the material. The disadvantage of cardboard boxes is that the service life is short, and it is easy to be damaged, easy to enter dust, and the long-term use cost is relatively high; Plastic boxes and other injection molding products are mostly small in size and heavy in weight; and the hollow board used in the newly emerging plastic hollow board box is a light weight (hollow structure), non-toxic, non-polluting, waterproof, shockproof, anti-aging, corrosion-resistant New materials with rich colors. Compared with cardboard and wood structure products, hollow boards have the advantages of moisture resistance and corrosion resistance. Compared with injection molding products, hollow boards have the advantages of shock resistance, flexible design structure, and no need to open injection molds. At the same time, the board can be flexibly added with anti-static and conductive masterbatches through the control of raw materials to produce plastic hollow boards with conductive and anti-static functions. Therefore, plastic hollow board is a new type of environmentally friendly packaging material. Chinese patent document CN2679049Y discloses a folding turnover box made of hollow boards, including a base plate, front, rear, left, and right side panels, and an upper frame. Type folding method, after folding, it still takes up a lot of space, and disassembly and assembly are more cumbersome, and there are no protective measures at the joints of the boards in the box, which is not enough to protect the stored items.

Utility model content

The technical problem to be solved by the utility model is to provide a foldable plastic hollow board turnover box with simple structure, small space occupation and good protection for the items in the box.

The technical solution for realizing the purpose of the utility model is: the foldable hollow board turnover box of the utility model includes a first board, a second board, a third board, a fourth board and 4 hinges. The first board and the second board are two completely identical plastic hollow boards, which are arranged in parallel front and back. The third board and the fourth board are two completely identical plastic hollow boards, and both left and right are arranged in parallel. A cuboid box body is formed by the first board, the second board, the third board and the fourth board.

The above-mentioned first board, second board, third board and fourth board are all bent boards made by stamping a rectangular plastic hollow board, and both sides of the middle part of the four boards are provided with 3 to 8 rivet mounting holes. The hinge is composed of a connecting part and two slot-type hinges whose backs are connected to the connecting part, and each hinge is provided with 6 to 16 rivet installation holes. Insert the first plate, the second plate, the third plate and the fourth plate into the slot-type hinges of the corresponding hinges from both sides of the middle part respectively, and pass through each hinge with 8 sets of rivets to respectively insert the first plate, The third board, the second board, the fourth board and the first board are fixed together by riveting.

The thickness of the above-mentioned first plate and the second plate is 4 to 8 mm. The first plate includes a front plate, a front bottom cover connected to the lower end of the front plate, and a front top cover connected to the top of the front plate, and the front bottom cover and the front top cover both face the rear of the front plate when they are bent. The second plate includes a rear plate, a rear bottom cover connected to the lower end of the rear plate and a rear top cover connected to the upper end of the rear plate, and both the rear bottom cover and the rear top cover face to the front of the rear plate when they are bent. The shape and size of the front and rear panels are exactly the same. The rivet mounting holes on both sides of the first board are arranged on both sides of the front board. The rivet installation holes on both sides of the second board are arranged on both sides of the rear board, and the positions of the rivet installation holes on the rear board are opposite to the front board. The shapes and sizes of the front bottom cover, the front top cover, the rear bottom cover and the rear top cover are exactly the same. The length of the middle and lower part of the front bottom cover and the rear bottom cover is slightly greater than the length of the upper part, so that the length of the middle and lower part of the front bottom cover and the rear bottom cover is slightly greater than the length of the upper part, so that the first plate is in the upper part of the front bottom cover. side and make the second plate form a lower notch on both sides of the upper part of the rear bottom cover. The length of the upper middle part of the front top cover and the rear top cover is slightly greater than the length of the lower part, so that the first plate forms an upper concave hole on both sides of the lower part of the front top cover and the second plate on both sides of the lower part of the rear top cover. mouth.

The above-mentioned third plate and fourth plate have a thickness of 4 to 8 mm. The third plate includes a left plate, a left bottom cover connected to the lower end of the left plate, and a left top cover connected to the upper end of the left plate, and both the left bottom cover and the left top cover face to the right of the left plate when they are bent. The fourth plate is also a bent plate made by stamping a rectangular plastic hollow plate. The fourth plate includes the right plate, the right bottom cover connected to the lower end of the right plate and the right top cover connected to the upper end of the right plate, and the right bottom Cover and right top cover are all towards the left side of right plate when bending. The shape and size of the left plate and the right plate are exactly the same, and its height is greater than the height of the front plate by twice the thickness of the front plate. The 3 to 8 rivet mounting holes on both sides of the third plate are set on both sides of the left plate, and the 3 to 8 rivet mounting holes on both sides of the fourth plate are set on both sides of the right plate, and the left plate and the right plate The positions of the rivet mounting holes on the upper plate are opposite to the positions of the rivet mounting holes on the front plate and the rear plate. The shape and size of the left bottom cover, the left top cover, the right bottom cover and the right top cover are exactly the same, and its width is half of the length of the front bottom cover top. The length of the upper part of the left bottom cover and the right bottom cover is slightly longer than the length of the middle and lower part, so that the third plate forms a lower convex on both sides of the upper part of the left bottom cover and the fourth plate forms a lower part on both sides of the right bottom cover. rise. The length of the lower part of the left top cover and the right top cover is slightly greater than the length of the upper middle part, so that the third plate forms an upper protrusion on both sides of the lower part of the left top cover and the fourth plate respectively forms an upper part on both sides of the right top cover. rise. The positions, shapes and sizes of the respective upper and lower protrusions of the third plate and the fourth plate are matched with the respective upper and lower notches of the first plate and the second plate.

The aforementioned hinge is a one-piece injection molded polypropylene piece at the same height as the front panel. The connecting part is an elastic thin plate, which can be twisted, and its length is 1 to 2 mm. Each hinge consists of a connecting piece, an inner leaf vertically connected to the inner side of the connecting piece, and an outer leaf vertically connected to the outer side of the connecting piece to form a slot, and each hinge is connected to the connecting part by the inner side of the connecting piece. Together. The thickness of a slot formed by the connecting piece and the two leaf pieces of each hinge matches the thickness of each plastic hollow plate. There are 3 to 8 rivet installation holes arranged up and down on each sheet, and the size and position of the rivet installation holes are the same as the size and position of the rivet installation holes on the front board, rear board, left board and right board. Cooperate.

The above-mentioned foldable hollow board turnover box also includes 8 protective strips. The protective strip is a strip-shaped thin-layer protective cotton cut from polyethylene cotton. The shape and size of each protective strip are the same as the shape and size of the inner sheets of each hinge. The 8 protective strips are respectively pasted on the 8 inner pages of the 4 hinges to completely cover the 8 inner pages.

The total thickness of the inner sheet and the protective strip covering the sheet is smaller than the size of the depression of each notch.

The utility model has positive effects:

(1) The foldable hollow board turnover box of the utility model has a simple structure, is easy and convenient to fold, takes up less space after folding, and saves transportation space and storage space.

(2) The foldable hollow board turnover box of the utility model strengthens the strength of the turnover box by using a hinge connection.

(3) The foldable hollow board turnover box of the utility model is pasted with PE cotton on the hinge of the joint in the box to prevent the transported items from being scratched during transportation, and has played a very good role in protecting the transported items.

(4) The foldable hollow board turnover box of the utility model is beautiful and elegant, and has the advantages of high strength, light weight, non-toxic, non-polluting, waterproof, shockproof, anti-aging, and corrosion resistance.

(5) The size of the folding hollow board turnover box of the present invention can be changed at will according to the requirements of customers during production, which saves the high cost of making molds for ordinary turnover boxes.

(6) When the foldable hollow plate turnover box of the utility model is used, if a certain part of the box is damaged, only the rivet needs to be removed to replace a corresponding plastic hollow plate, which prolongs the service life of the turnover box.

(7) The foldable hollow plate turnover box of the utility model is detachable and foldable, which facilitates the operation of the operator.

Description of drawings

Fig. 1 is a schematic diagram of a three-dimensional structure of the utility model. At this time, each top cover and bottom cover of the turnover box are in a bent and closed state.

Fig. 2 is a three-dimensional schematic view of the turnover box in Fig. 1 when it is opened.

FIG. 3 is a schematic perspective view viewed from the rear of FIG. 2 .

Fig. 4 is a schematic perspective view of the turnaround box when it is folded from the open state in Fig. 2 to the folded state.

Fig. 5 is a three-dimensional schematic view of the turnover box after the rivet on a hinge is removed from the folded state of Fig. 4 and unfolded.

The markings in the above drawings are as follows:

First board 1, front board 11, front bottom cover 12, front top cover 13,

Second plate 2, rear plate 21, rear bottom cover 22, rear top cover 23,

The third plate 3, left plate 31, left bottom cover 32, left top cover 33,

The fourth plate 4, right plate 41, right bottom cover 42, right top cover 43,

Hinge 5, connecting portion 50, hinge 51, connecting sheet 52, inner sheet 53, outer sheet 54,

Rivet 6,

protection strip 7,

Lower notch 81 , upper notch 82 , lower protrusion 83 , upper protrusion 84 .

Detailed ways

(Example 1)

See Fig. 1, Fig. 2 and Fig. 5, the foldable hollow board turnover box of this embodiment includes a first board 1, a second board 2, a third board 3, a fourth board 4, a hinge 5, a rivet 6 and a protective strip 7 .

Referring to Fig. 1 to Fig. 3, the first plate 1 and the second plate 2 are two identical hollow plastic plates with a thickness of about 5 mm. The first plate 1 is a bent plate made by punching a rectangular plastic hollow plate. The first plate 1 includes a front plate 11, a front bottom cover 12 connected to the lower end of the front plate 11 and a front bottom cover connected to the upper end of the front plate 11. The top cover 13, and the front bottom cover 12 and the front top cover 13 all face the rear of the front panel 11 when they are bent. The second plate 2 is also a bent plate made by stamping a rectangular plastic hollow plate. The second plate 2 includes a rear plate 21, a rear bottom cover 22 connected to the lower end of the rear plate 21 and a rear bottom cover connected to the upper end of the rear plate 21. The top cover 23, and the rear bottom cover 22 and the rear top cover 23 all face to the front of the rear plate 21 when they are bent. The shape and size of the front plate 11 and the rear plate 21 are exactly the same, and the two are arranged in parallel front and rear. The left sides of the front panel 11 and the rear panel 21 are provided with five rivet installation holes arranged up and down, and the right sides of the front panel 11 and the rear panel 21 are also provided with five rivet installation holes arranged up and down at the positions opposite to the left side. . The shapes and sizes of the front bottom cover 12, the front top cover 13, the rear bottom cover 22 and the rear top cover 23 are exactly the same.

Under the state shown in Fig. 2 and Fig. 3, the length of the middle and lower part of the front bottom cover 12 and the rear bottom cover 22 is slightly greater than the length of the top, so that the first plate 1 is on both sides of the upper part of the front bottom cover 12 and the second Two lower notches 81 are respectively formed on both sides of the upper part of the rear bottom cover 22 on the second board 2 . The length of the upper middle part of the front top cover 13 and the rear top cover 13 is slightly greater than the length of the bottom, so that the first plate 1 is on both sides of the bottom of the front top cover 13 and the second plate is on both sides of the bottom of the back top cover 13. An upper notch 82 is formed.

Referring to Fig. 1 to Fig. 3, the third board 3 and the fourth board 4 are two completely identical plastic hollow boards with a thickness of about 5 mm. The third plate 3 and the fourth plate 4 have the same height as the first plate 1 and the second plate 2 . The third plate 3 is a bent plate made by stamping a rectangular plastic hollow plate. The third plate 3 includes a left plate 31, a left bottom cover 32 connected to the lower end of the left plate 31 and a left left plate connected to the upper end of the left plate 31. The top cover 33, and the left bottom cover 32 and the left top cover 33 all face to the right of the left plate 31 when they are bent. The fourth plate 4 is also a bent plate made by stamping a rectangular plastic hollow plate. The fourth plate 4 includes a right plate 41, a right bottom cover 42 connected to the lower end of the right plate 41 and a right bottom cover connected to the upper end of the right plate 41. The top cover 43, and the right bottom cover 42 and the right top cover 43 all face to the left of the right plate 41 when they are bent. The shapes and sizes of the left plate 31 and the right plate 41 are exactly the same, and both left and right are arranged in parallel. The heights of the left plate 31 and the right plate 41 are both greater than the height of the front plate 11 by twice the thickness of the front plate 11, in this embodiment, that is, 10 mm greater. The front sides of the left plate 31 and the right plate 41 are provided with five rivet mounting holes arranged up and down, and the positions of the rivet mounting holes are opposite to the positions of the rivet mounting holes on the front plate 11 and the rear plate 21 . The rear sides of the left plate 31 and the right plate 41 are also provided with five rivet mounting holes arranged up and down at positions opposite to the front sides. The shape size of left bottom cover 32, left top cover 33, right bottom cover 42 and right top cover 43 is identical, and its height is half of the length of front bottom cover 12 tops.

Under the state shown in Fig. 2 and Fig. 3, the length of the upper part of left bottom cover 32 and right bottom cover 42 is slightly greater than the length of the middle and lower parts, so that the third plate 3 is on both sides of the upper part of left bottom cover 32 and makes the second The four plates 4 respectively form a lower protrusion 83 on both sides of the upper part of the right bottom cover 42 . The length of the bottom of the left top cover 33 and the right top cover 43 is slightly greater than the length of the upper middle part, so that the third plate 3 is on both sides of the bottom of the left top cover 33 and the fourth plate 4 is on both sides of the bottom of the right top cover 43 Each upper protrusion 84 is formed one by one. The positions, shapes and sizes of the respective upper and lower protrusions 83 , 84 of the third plate 3 and the fourth plate 4 are matched with the respective upper and lower recesses 81 , 82 of the first plate 1 and the second plate 2 .

As shown in Figures 1 to 5, the hinge 5 is an integral part made of PP plastic (that is, polypropylene) injection molding, which is light in weight, strong in rigidity, and has excellent mechanical properties, heat resistance, electrical insulation, and chemical stability. and scratch resistance. There are four hinges 5, and each hinge 5 is composed of a connecting portion 50 and two slot-type hinges 51 whose backs are connected to the connecting portion 50. The height of the hinge 5 is the same as that of the front plate 11 . The connecting part 50 is an elastic thin plate, which can be twisted, and its length is 1 to 2 mm. Each hinge 51 is made of connecting sheet 52, the inner side sheet 53 vertically connected to the inside of connecting sheet 52, and the outer sheet 54 vertically connected to the outside of connecting sheet 52 to form a slot, and each hinge 51 is formed by its connecting sheet. The inner side of 52 is connected with the connection part 50 together. The thickness of a slot formed by the connecting piece 52 of each hinge 51 and two leaf pieces 53, 54 matches the thickness of each plastic hollow plate, which is 5 millimeters in the present embodiment. Each leaf 53,54 is provided with 5 rivet mounting holes arranged up and down, and the size and position of the rivet mounting holes are the same as those of the rivet mounting holes on the front plate 11, the rear plate 21, the left plate 31 and the right plate 41. Compatible with size and position.

See Fig. 1 and Fig. 4, there are 8 groups of rivets 6, 5 in each group. Insert the right part of the front panel 11 into the slot-type hinge 51 of the first hinge 5-1 that is positioned at the front side and the notch is to the left, and then connect the hinge 51 to the front by the 5 rivets 6 of the first group. The right part of the plate 11 is riveted and fixed together; the front part of the right plate 41 is inserted into the slot hinge 51 on the right side of the first hinge 5-1 with the notch facing the rear, and then passed through the second set of 5-1 hinges. A rivet 6 is riveted together with the front portion of the hinge 51 and the right plate 41.

Insert the rear portion of the right plate 41 into the slot-type hinge 51 on the right side and notch forward of the second hinge 5-2, and connect the hinge 51 with the right hinge 51 through the 5 rivets 6 of the third group. The rear part of the plate 41 is riveted and fixed together; the right part of the rear plate 21 is inserted in the slot hinge 51 of the second hinge 5-2 which is located at the rear side and the notch is to the left, and then passes through the 5-pin of the fourth group. Each rivet 6 is riveted and fixed together with the right part of the hinge 51 and the rear plate 21 respectively.

Insert the left part of the rear plate 21 into the third hinge 5-3 in the slot-type hinge 51 that is positioned at the rear side and the notch is to the right, and then connect the hinge 51 to the rear by five rivets 6 of the fifth group. The left part of the plate 21 is riveted and fixed together; the rear part of the left plate 31 is inserted in the slot hinge 51 on the left side of the third hinge 5-3 with the notch forward, and then passed through the 5th set of the sixth group. A rivet 6 riveted and fixed the hinge 51 and the rear portion of the left plate 31 together.

Insert the front portion of the left plate 31 into the slot-type hinge 51 on the left side and the notch of the fourth hinge 5-4, and connect the hinge 51 to the left side by the 5 rivets 6 of the seventh group. The front part of the plate 31 is riveted and fixed together; the left part of the front plate 11 is inserted in the slot type hinge 51 of the fourth hinge 5-4 which is located on the front side and the notch is to the right, and then passes through the eighth group of 5 hinges. A rivet 6 riveted and fixed the hinge 51 with the left part of the front panel 11.

See Figure 2 and Figure 5, the protective strip 7 is a strip-shaped thin-layer protective cotton cut from PE (polyethylene) cotton. The PE cotton has a smooth surface, high physical strength, and good heat insulation, waterproof, and cushioning properties. , and excellent chemical stability. There are 8 protective strips 7 in total, and the shape and size of each protective strip 7 are the same as the shape and size of the inner sheet 53 of each hinge 5 . The eight protective strips 7 are attached to the eight inner sheets 53 of the four hinges 5 respectively, covering the eight inner sheets 53 completely. The total thickness of the inner sheet 53 and the protective strip 7 covering the inner sheet 53 is smaller than the concave size of each notch 81 , 82 .

The foldable hollow board turnover box shown in Figure 1 is in the state of containing articles. When folding the foldable hollow plate turnover box, first turn the left top cover 33 of the third plate 3 and the right top cover 43 of the fourth plate 4 from the bent state to the straight state shown in Figure 2, and then Turn the front top cover 13 of the first board 1 and the rear top cover 23 of the second board 2 from the bent state to the straight state shown in Figure 2, and then lay the turnover box down so that the left bottom of the third board 3 The right bottom cover 42 of cover 32 and the 4th board 4 is rotated to the straight state shown in Figure 2 from the bent state, and then the front bottom cover 12 of the first board 1 and the rear bottom cover 22 of the second board 2 are folded. The bent state is rotated to the straight state shown in Figure 2, so that the turnover box is in the straight state shown in Figure 2. Then any hinge 5 is folded from the state where the angle between the two hinges 51 is 90° to the angle between the two hinges 51 is 0° or unfolded to the angle between the two hinges 51 is 180° until it becomes The folded state shown in FIG. 4 , and the two lower notches 81 on the right side of the first board 1 and the second board 2 are matched with the corresponding one lower protrusion 83 on the front side and the rear side of the fourth board 4 , the two upper notches 82 on the right side of the first board 1 and the second board 2 are matched with the corresponding one upper protrusion 84 on the front side and the rear side of the fourth board 4; the first board 1 and the second board The two lower notches 81 on the left side of the plate 2 are matched with the corresponding one of the lower protrusions 83 on the front side and the rear side of the third plate 3, and the two left sides of the first plate 1 and the second plate 2 Each upper notch 82 is matched with a corresponding one of the upper protrusions 84 of the third plate 3 located in the front side and the rear side.

When unfolding the turnover box in the folded state shown in Figure 4, it is only necessary to perform the reverse operation according to the operation steps of folding the turnover box, wherein, the front bottom cover 12 of the first board 1 is moved backward When turning to the bent state, the lower notch 81 on the left side of the front bottom cover 12 avoids the hinge 51 of the hinge 5 at the front of the left plate 31 and the protective strip 7 covered on the inside sheet 53. The front bottom cover 12 The lower notch 81 on the right avoids the hinge 51 of the hinge 5 at the front part of the right plate 41 and the protective strip 7 covered on the inside sheet 53; When turning to the bent state after the back, the upper notch 82 on the left side of the front top cover 13 avoids the hinge 51 of the hinge 5 at the front part of the left plate 31 and the protective strip 7 covered on the inside sheet 53, the front top cover 13 The upper notch 82 on the right side avoids the hinge 51 of the hinge 5 at the front of the right plate 41 and the protective strip 7 covered on the inner side sheet 53; When turning forward to the bent state, the lower notch 81 on the left side of the rear bottom cover 22 avoids the hinge 51 of the hinge 5 at the rear of the left plate 31 and the protective strip 7 covered on the inner side sheet 53. The lower notch 81 on the right side of the cover 22 avoids the hinge 51 of the hinge 5 at the rear of the right plate 41 and the protective strip 7 covered on the inner side sheet 53; When the state is turned forward to the bent state, the upper notch 82 on the left side of the rear top cover 23 avoids the hinge 51 of the hinge 5 at the rear of the left plate 31 and the protective strip 7 covered on the inside sheet 53, and the rear The upper notch 82 on the right side of the top cover 23 avoids the hinge 51 of the hinge 5 at the rear of the right plate 41 and the protective strip 7 covered on the inside sheet 53 .

Because the height of left plate 31 and right plate 31 goes out front plate 11 and rear plate 2110 millimeters greatly, so the upper and lower ends of left plate 31 and right plate 41 are just in time more than front plate 11 and rear plate 21 respectively 5 millimeters, make front plate 11 like this Bottom cover 12 and rear bottom cover 22 are just flush with the lower ends of left plate 31 and right plate 41 after bending, and front top cover 13 and rear top cover 23 are just flush with the upper ends of left plate 31 and right plate 41 after bending , and then the left bottom cover 32 and the left top cover 33 of the third plate 3 are rotated inwardly from the straight state to become the bent state, and the right bottom cover 42 and the right top cover 43 of the fourth plate 4 are turned from the straight state to Rotate inside until it becomes a bent state, the left bottom cover 32 and the right bottom cover 42 can be flatly placed under the front bottom cover 12 and the rear bottom cover 22, and the left top cover 33 and the right top cover 43 can be flatly placed under the front top cover 13 And the top of rear top cover 23 (Fig. 1). When storing articles in the turnover box, only the lower end surfaces of the left bottom cover 32 and the right bottom cover 42 need to be implemented with cross seals. In order to better protect the stored items, one deck of PE protective cotton can also be laid on the upper end surfaces of the front bottom cover 12 and the rear bottom cover 22.

As shown in Fig. 5, it is also very convenient to disassemble the foldable hollow plate turnover box of this embodiment. It is only necessary to remove five rivets 6 from a hinge 51 of any hinge 5, so as to disassemble and expand the turnover box to each Board tiling state.

Claims (6)

1. A foldable hollow board turnover box, comprising a first board (1), a second board (2), a third board (3) and a fourth board (4); the first board (1) and the second board (2) are identical two plastic hollow boards, both of which are arranged in parallel front and back; the third board (3) and the fourth board (4) are two identical plastic hollow boards, both of which are arranged parallel to each other; One plate (1), the second plate (2), the third plate (3) and the fourth plate (4) form a cuboid box, which is characterized in that: it also includes 4 hinges (5); The first plate (1), the second plate (2), the third plate (3) and the fourth plate (4) are all bent plates made by stamping a rectangular plastic hollow plate, and four Both sides of the middle part of the board are provided with 3 to 8 rivet installation holes on each side; the hinge (5) is connected by a connecting part (50) and two slot-type hinges ( 51), each hinge (51) is provided with 6 to 16 rivet mounting holes; the first plate (1), the second plate (2), the third plate (3) and the fourth plate (4 ) are respectively inserted into the slot-type hinges (51) of the corresponding hinges (5) from both sides of the middle part, and the first plate (1), The third plate (3), the second plate (2), the fourth plate (4) and the first plate (1) are riveted and fixed together. 2. A foldable hollow board turnover box according to claim 1, characterized in that: the thickness of the first board (1) and the second board (2) is 4 to 8 mm; the first board (1 ) comprises a front plate (11), a front bottom cover (12) connected to the front plate (11) lower end and a front top cover (13) connected to the front plate (11) upper end, and the front bottom cover (12) and the front top cover Cover (13) all faces the rear of front plate (11) when bending; The rear top cover (23) on the upper end of the plate (21), and the rear bottom cover (22) and the rear top cover (23) are all towards the front of the rear plate (21) when bending; the front plate (11) and the rear plate ( 21) have exactly the same shape and size; the rivet mounting holes on both sides of the first plate (1) are located on both sides of the front plate (11); the rivet mounting holes on both sides of the second plate (2) are located on the rear plate ( 21), and the position of the rivet installation hole on the rear plate (21) is opposite to the front plate (11); the front bottom cover (12), the front top cover (13), the rear bottom cover (22) and the rear top The shape and size of the cover (23) are identical; the length of the middle and lower part of the front bottom cover (12) and the rear bottom cover (22) is slightly greater than the length of the top, so that the front bottom cover (12) and the rear bottom cover (22) The length of the middle and lower part is slightly greater than the length of the upper part, so that the first plate (1) is formed on both sides of the upper part of the front bottom cover (12) and the second plate (2) is formed on both sides of the upper part of the rear bottom cover (22). 1 lower notch (81); the length of the upper middle part of the front top cover (13) and the rear top cover (13) is slightly greater than the length of the lower part, so that the first plate (1) is in the lower part of the front top cover (13) Both sides and make the second plate respectively form an upper notch (82) on both sides of the lower part of the rear top cover (13). 3. A foldable hollow board turnover box according to claim 2, characterized in that: the thickness of the third board (3) and the fourth board (4) is 4 to 8 mm; the third board (3 ) comprises left plate (31), the left bottom cover (32) that is connected in left plate (31) lower end and the left top cover (33) that is connected in left plate (31) upper end, and left bottom cover (32) and left top Cover (33) all faces the right side of left plate (31) when bending; The fourth plate (4) is also a bent plate made by stamping a rectangular plastic hollow plate, and the fourth plate (4) includes the right plate (41), the right bottom cover (42) connected to the lower end of the right plate (41) and the right top cover (43) connected to the upper end of the right plate (41), and the right bottom cover (42) and the right top cover (43 ) are all towards the left side of the right plate (41) when bending; The thickness of the plate (11); the 3 to 8 rivet installation holes on both sides of the third plate (3) are located on both sides of the left plate (31), and the 3 to 8 rivet installation holes on both sides of the fourth plate (4) The holes are located on both sides of the right plate (41), and the position of each rivet mounting hole on the left plate (31) and the right plate (41) is the same as that of the rivet mounting holes on the front plate (11) and the back plate (21). The positions are relative; the shapes and sizes of the left bottom cover (32), the left top cover (33), the right bottom cover (42) and the right top cover (43) are exactly the same, and its width is the length of the front bottom cover (12) top The length of the upper part of left bottom cover (32) and right bottom cover (42) is slightly greater than the length of the middle and lower part, thereby making the third plate (3) on both sides of the upper part of left bottom cover (32) and making the fourth Plate (4) forms a lower protrusion (83) on both sides of the upper part of the right bottom cover (42); the length of the lower part of the left top cover (33) and the right top cover (43) is slightly greater than the length of the upper middle part, Thereby making the third plate (3) on both sides of the bottom of the left top cover (33) and making the fourth plate (4) form an upper protrusion (84) on both sides of the bottom of the right top cover (43); The position and shape size of each upper and lower convex portion (83), (84) of the third plate (3) and the fourth plate (4) are the same as the respective upper and lower recesses of the first plate (1) and the second plate (2). (81), (82) match. 4. A foldable hollow board turnover box according to claim 3, characterized in that: the hinge (5) is an integral part made of polypropylene injection molding, and its height is the same as that of the front plate (11) The connecting part (50) is an elastic thin plate, which can be twisted, and its length is 1 to 2 millimeters; each hinge (51) is connected by the connecting sheet (52), the inner side sheet (53) vertically connected to the connecting sheet (52) inside ) and the outer sheet (54) vertically connected to the outside of the connecting sheet (52) form a slot, and each hinge (51) is connected together with the connecting part (50) by the inner side of its connecting sheet (52); The thickness of a slot formed by the connecting piece (52) of each hinge (51) and 2 leaves (53), (54) matches the thickness of each plastic hollow plate; each leaf (53) , (54) are all provided with 3 to 8 rivet mounting holes arranged up and down, and the size and position of the rivet mounting holes are the same as those of the front plate (11), rear plate (21), left plate (31) and right plate (41). ) match the size and position of the rivet mounting holes on the 5. A foldable hollow board turnover box according to claim 4, characterized in that: it also includes 8 protective strips (7); the protective strips (7) are strip-shaped thin layers cut from polyethylene cotton Protective cotton; the shape and size of each protective strip (7) are the same as the shape and size of the inboard sheet (53) of each hinge (5); 8 protective strips (7) are attached to 8 of the 4 hinges (5) respectively. On the inside sheet (53), 8 inside sheets (53) are completely covered. 6. A foldable hollow board turnover box according to claim 5, characterized in that: the total thickness of the inner sheet (53) and the protective strip (7) covering the sheet (53) is smaller than each The recessed dimensions of the notches (81), (82).

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