Transport box

Abstract

The application provides a transport box, comprising: a box body for containing materials; a door body slidably arranged on the box body to open or close the box body; and a hinged assembly arranged on the box body, the hinged assembly comprising a first leaf and a second leaf hinged to each other, the first leaf being fixedly connected to the box body, the second leaf being provided with a first matching part, the door body being provided with a second matching part, the second matching part being clamped with the first matching part when the door body is opened to a predetermined opening position, the door body being turned with the second leaf so that the door body is located at the side of the box body. The application solves the problem that the opening range of the door body of the material transport box in the prior art is limited.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material transportation, in particular to a transportation box. BACKGROUND

[0002] At present, when transporting liquid goods or granular or powder goods, the goods are usually first filled in a transportation bag, and then the transportation bag is placed in a transportation box for transportation.

[0003] Many goods are relatively dangerous, especially prone to expansion or explosion during violent shaking, so that the liquid bag can only be transported by using a relatively sealed box.

[0004] However, the doors of the existing box are mostly hinged to the box, and the box is opened or closed by using a hinge. The opening range of the door body is limited, which blocks the operator from placing the liquid bag in the box, and occupies a large space when the box is opened. SUMMARY

[0005] The main purpose of the present application is to provide a transportation box to solve the problem of limited opening range of the door body of the material transportation box in the prior art.

[0006] In order to achieve the above purpose, the present application provides a transportation box, comprising: a box body for containing goods; a door body slidably arranged on the box body to open or close the box body; a hinge assembly arranged on the box body, the hinge assembly comprising a first leaf and a second leaf hinged to each other, the first leaf being fixedly connected to the box body, the second leaf being provided with a first matching part, the door body being provided with a second matching part, the second matching part being clamped with the first matching part when the door body is opened to a predetermined opening position, the door body being turned with the second leaf to be located at the side of the box body.

[0007] Further, the first matching part and the second matching part are interference fit, the first matching part is a matching opening, and the second matching part is a matching protrusion.

[0008] Further, the first matching part is a matching opening, and the second matching part comprises: a matching column arranged on the door body; a limiting stopper arranged on the matching column, at least part of the matching column being clamped into the matching opening and driving the limiting stopper to turn the second leaf; the door body is located at the side of the box body through the blocking effect of the matching opening on the matching column.

[0009] Further, the second leaf has an initial position and a turning position, at least part of the second leaf is located above the first leaf and has a through gap between the first leaf, so that the second leaf is in the initial position; at least part of the second matching part is clamped with the first matching part through the through gap.

[0010] Further, the second leaflet comprises a hinge end and a matching end arranged oppositely, the hinge end of the second leaflet is hinged with the first leaflet, and the matching end of the second leaflet extends towards the inner side of the box body; the first matching part is arranged at the matching end of the second leaflet; the first matching part is a matching opening, and the matching opening faces the inner side of the box body.

[0011] Further, the hinge assembly further comprises a bearing component arranged on the second leaflet, the bearing component has a bearing end face, and the bearing end face is an arc surface; at least part of the bearing end face is in contact with the door body to support the door body.

[0012] Further, the second leaflet comprises a first turnover surface and a second turnover surface arranged oppositely, the first turnover surface is opposite to the first leaflet, and the bearing component is arranged on the second turnover surface.

[0013] Further, the hinge assembly further comprises a support frame arranged on the second leaflet, the support frame protrudes relative to the surface of the second leaflet, the support frame is two, the two support frames are arranged oppositely and spaced apart, the bearing component is arranged between the two support frames, and the bearing component is connected with the two support frames respectively.

[0014] Further, the door body is provided with a limiting groove matched with the bearing component, the limiting groove extends along the sliding direction of the door body, at least part of the bearing component is located in the limiting groove, and at least part of the bearing end face is in contact with the groove bottom surface of the limiting groove.

[0015] Further, the bearing component is rotatably arranged around a predetermined axis; and / or, the bearing component is a bearing.

[0016] By applying the technical scheme of the present application, the transport box comprises a box body, a door body and a hinge assembly, wherein the box body is used for containing materials, the door body is slidably arranged on the box body to open or close the box body, the hinge assembly is arranged on the box body, the hinge assembly comprises a first leaflet and a second leaflet hinged with each other, the first leaflet is fixedly connected with the box body, the second leaflet is provided with a first matching part, the door body is provided with a second matching part, when the door body is opened to a predetermined opening position, the second matching part is clamped with the first matching part, and the door body is turned with the second leaflet, so that the door body is located at the side of the box body. In this way, when the door body slides from the closed position to the opening position, when it slides to the predetermined opening position, the second matching part on the door body is clamped into the first matching part, and when the door body continues to move, it drives the second leaflet to turn relative to the first leaflet. At this time, the door body is turned with the second leaflet to the side of the box body, so that the door body is in the opening position. Since the second matching part is clamped with the first matching part, the door body is kept in the opening position. Therefore, when the door body is in the opening position, it will not affect the operator to arrange the materials. The door body can be opened from the top of the box body to the side of the box body, thereby solving the problem that the opening range of the door body is limited due to the direct hinge connection between the door body and the box body in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which form a part of this specification, are included to provide a further understanding of the application, and are incorporated herein by reference. The embodiments depicted herein are shown for the purpose of providing illustrative examples of the present application and a description of the application, and are not intended to limit the present application unduly.

[0018] Figure 1 Fig. 1 shows a schematic view of the opened state of the transport case according to the present application;

[0019] Figure 2 Fig. 2 shows an enlarged view of part A according to the present application; Figure 1

[0020] Figure 3 Fig. 3 shows a schematic view of the cooperation between the door body and the case body of the transport case according to the present application in the opened state;

[0021] Figure 4 Fig. 4 shows a schematic view of the stop component of the transport case according to the present application;

[0022] Figure 5 Fig. 5 shows an enlarged view of part B according to the present application; Figure 3

[0023] Figure 6 Fig. 6 shows a bottom view of the door body of the transport case according to the present application;

[0024] Figure 7 Fig. 7 shows an enlarged view of part C of the transport case according to the present application; Figure 1

[0025] Figure 8 Fig. 8 shows a schematic view of the case body of the transport case according to the present application;

[0026] Figure 9 Fig. 9 shows a folded state view of the case body of the transport case according to the present application.

[0027] Wherein, the above-mentioned drawings include the following reference signs:

[0028] 1, case body; 10, first top surface; 11, limiting slide; 12, second top surface; 13, limiting component; 130, supporting column; 131, limiting chuck; 14, stop component; 141, first body; 142, second body; 143, third body; 1430, avoiding recess; 15, baffle; 16, intermediate stop piece; 160, limiting gap; 17, case body framework; 18, case body cladding; 144, first stop component; 146, second stop component;

[0029] ​​​2, door body; 20, second matching part; 201, matching column; 202, limiting stop head; 21, clamping part; 210, clamping opening; 22, clamping support strip; 23, avoiding part; 24, sliding plate; 240, guide end face; 25, connecting sheet; 250, connecting notch; 26, limiting groove; 27, door plate framework; 28, door plate cladding layer;

[0030] 3, hinge assembly; 31, first leaf; 32, second leaf; 320, first matching part; 33, bearing part; 34, support frame; 35, rotating shaft; 4, base; 44, discharge port;

[0031] 5, side plate; 51, first side plate; 52, second side plate. DETAILED DESCRIPTION

[0032] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] Please refer to Figures 1 to 9 The present application provides a transport box, comprising: a box body 1 for containing materials; a door body 2 slidably arranged on the box body 1 to open or close the box body 1; a hinge assembly 3 arranged on the box body 1, the hinge assembly 3 comprising a first leaf 31 and a second leaf 32 hingedly connected to each other, the first leaf 31 being fixedly connected to the box body 1, the second leaf 32 being provided with a first matching part 320, the door body 2 being provided with a second matching part 20, the second matching part 20 being clamped with the first matching part 320 when the door body 2 is opened to a predetermined open position, the door body 2 being turned with the second leaf 32 so that the door body 2 is located at the side of the box body 1.

[0034] The transport box provided by the application comprises a box body 1, a door body 2 and a hinge assembly 3. The box body 1 is used for containing materials. The door body 2 is slidably arranged on the box body 1 to open or close the box body. The hinge assembly 3 is arranged on the box body 1 and comprises a first leaf 31 and a second leaf 32 which are hingedly connected to each other. The first leaf 31 is fixedly connected to the box body 1. The second leaf 32 is provided with a first matching part 320. The door body 2 is provided with a second matching part 20. When the door body 2 is opened to a predetermined opening position, the second matching part 20 is clamped with the first matching part 320. The door body 2 is turned with the second leaf 32, so that the door body 2 is located at the side of the box body 1. In this way, when the door body 2 slides from the closed position to the opening position, when it slides to the predetermined opening position, the second matching part 20 on the door body 2 is clamped into the first matching part 320. When the door body 2 continues to move, it will drive the second leaf 32 to turn relative to the first leaf 31. At this time, the door body 2 is turned with the second leaf 32 to the side of the box body 1, so that the door body 2 is in the opening position. Since the second matching part 20 is clamped with the first matching part 320, the door body 2 is kept in the opening position. In this way, when the door body 2 is in the opening position, it will not affect the operator to arrange the materials. The door body 2 can be opened from the top of the box body 1 to the side of the box body 1, solving the problem that the opening range of the door body 2 is limited due to the direct hinge connection between the door body 2 and the box body 1 in the prior art.

[0035] In the application, only the hinge assembly 3 is arranged on the box body 1. The second leaf 32 in the hinge assembly 3 is detachably matched with the door body 2. Meanwhile, the opening mode of the door body 2 is changed. The traditional door body 2 is directly turned to open and is changed to be combined with sliding opening and turning. Then, when the door body 2 slides to the predetermined opening position, it is matched with the second leaf 32 to realize the turning of the door body 2.

[0036] Specifically, the first matching part 320 is in interference fit with the second matching part 20. The first matching part 320 is a matching opening. The second matching part 20 is a matching protrusion. After the door body 2 is opened to the predetermined position, the second matching part 20 is clamped into the first matching part 320 to realize the interference fit between the first matching part 320 and the second matching part 20. The door body 2 can drive the second leaf 32 to turn and keep the door body 2 in the opening position by using the second matching part 20.

[0037] In specific implementation, as shown in Figure 4 the first matching part 320 is a matching opening. The second matching part 20 comprises a matching column 201 arranged on the door body 2 and a limiting stopper 202 arranged on the matching column 201. At least part of the matching column 201 is clamped into the matching opening and drives the limiting stopper 202 to turn the second leaf 32. The blocking effect of the matching opening on the matching column 201 makes the door body 2 located at the side of the box body 1. In this way, Figure 4The door body 2 and the hinge assembly 3 are shown in a split structure, wherein the matching column 201 and the matching opening are matched with each other, and under the blocking action of the limiting stop head 202 on the second leaf 32, the door body 2 drives the second leaf 32 to turn to the side of the box body 1, at this time, the body of the matching opening surrounded by the second leaf 32 blocks the matching column 201, so that the door body 2 remains in the open position.

[0038] In a specific implementation, the second leaf 32 has an initial position and a turning position, at least part of the second leaf 32 is located above the first leaf 31 and has a through gap between the first leaf 31, so that the second leaf 32 is in the initial position; at least part of the second matching part 20 is matched with the first matching part 320 through the through gap. Wherein, the first leaf 31 and the second leaf 32 are connected by the rotating shaft 35, and the second leaf 32 rotates around the rotating shaft 35.

[0039] When the door body 2 is in the closed position, the second leaf 32 corresponds to the initial position, when the door body 2 needs to be opened, the door body 2 is slid until a predetermined open position, at this position, the limiting stop head 202 contacts the second leaf 32 through the through gap, the matching column 201 is matched into the matching opening, the door body 2 is continuously slid, the second leaf 32 is turned under the driving of the limiting stop head 202, and the door body 2 is turned to the side of the box body 1. When the second leaf 32 is turned by 90°, the door body 2 is turned to the side of the box body 1. By setting the through gap between the second leaf 32 and the first leaf 31 when the second leaf 32 is in the initial position, it is ensured that the matching column 201 can be matched into the matching opening, and the limiting stop head 202 cooperates with the second leaf 32.

[0040] Further, the second leaf 32 includes oppositely arranged hinge end and matching end, the hinge end of the second leaf 32 is hinged with the first leaf 31, and the matching end of the second leaf 32 extends towards the inner side of the box body 1; the first matching part 320 is arranged on the matching end of the second leaf 32; the first matching part 320 is a matching opening, and the matching opening faces the inner side of the box body 1. In this way, the second leaf 32 and the door body 2 can be precisely matched, so that the door body 2 can be completely opened.

[0041] As shown in Figure 3 and Figure 4 The hinge assembly 3 further includes a supporting part 33 arranged on the second leaf 32, the supporting part 33 has a supporting end face, and the supporting end face is an arc surface; at least part of the supporting end face contacts the door body 2 to support the door body 2. By arranging the supporting part 33, deformation of the door body 2 in the repeated sliding process is avoided, which causes errors in cooperation with the second leaf 32, and at the same time, the supporting effect of the supporting end face is used to avoid extrusion of the door body 2 on the materials in the box body 1.

[0042] In the present application, the second leaf 32 comprises oppositely arranged first and second turning surfaces, the first turning surface is opposite to the first leaf 31, and the supporting member 33 is arranged on the second turning surface. In this way, the overall structure of the hinge assembly 3 is more compact, and the supporting member 33 does not need to be separately arranged on the box body 1 to support the door body 2. Through the cooperation between the supporting member 33 and the first cooperation part 320, it is ensured that the door body 2 can be precisely cooperated with the first cooperation part 320 under the supporting action of the supporting member 33.

[0043] In order to facilitate the fixation of the supporting member 33, the hinge assembly 3 further comprises a support frame 34 arranged on the second leaf 32, the support frame 34 is protruded relative to the surface of the second leaf 32, and the support frame 34 is arranged in two, the two support frames 34 are oppositely and spacedly arranged, the supporting member 33 is arranged between the two support frames 34, and the supporting member 33 is connected with the two support frames 34 respectively. The support frame 34 is provided with a rotating shaft, the supporting member 33 is arranged on the rotating shaft, and the supporting end surface is protruded relative to the top surface of the support frame 34, so that the supporting end surface is in contact with the door body 2 in priority to the support frame 34.

[0044] In specific implementation, the door body 2 is provided with a limiting groove 26 cooperating with the supporting member 33, the limiting groove 26 extends along the sliding direction of the door body 2, at least part of the supporting member 33 is located in the limiting groove 26, and at least part of the supporting end surface is in contact with the groove bottom surface of the limiting groove 26. In this way, the door body 2 can slide along the predetermined track by utilizing the stopping action of the supporting member 33 and the groove side wall surface of the limiting groove 26, the deviation of the moving track of the door body 2 in the repeated sliding process is avoided, and the cooperation precision of the door body 2 and the hinge assembly 3 is improved.

[0045] In the embodiments provided by the present application, the supporting member 33 is rotatably arranged around a predetermined axis, and / or the supporting member 33 is a bearing. In this way, the movement of the door body 2 is more smooth, the friction between the door body 2 and the supporting member 33 is reduced, and the door body 2 is supported by the supporting member 33 when the door body 2 is in the closed state.

[0046] The first top surface 10 of the box body 1 is provided with a limiting slide 11, the opening of the limiting slide 11 faces the inner side of the box body 1, at least part of the door body 2 is inserted into the limiting slide 11 and moves along the extension direction of the limiting slide 11. In this way, the door body 2 is limited by the top surface of the limiting slide 11, when the pressure in the box body 1 increases, the door body 2 is prevented from being opened by the limiting action of the limiting slide 11, and the strength of the door body 2 is improved.

[0047] Specifically, the transport box further includes: a limiting member 13, disposed on the second top surface 12 of the box body 1, the limiting member 13 protruding relative to the second top surface 12; a first angle formed between the first top surface 10 and the second top surface 12; and a locking portion 21 disposed on the door body 2, at least a portion of which engages with the limiting member 13 to close the door body 2. This arrangement allows the locking portion 21 to engage with the limiting member 13 during the closing process of the door body 2, alerting the operator that the door body 2 has slid to the closed position, thereby preventing the door body 2 from exceeding its sliding travel.

[0048] The box body 1 includes two opposite first top surfaces 10 and two opposite second top surfaces 12. The two first top surfaces 10 and the two second top surfaces 12 together form an opening for placing materials. The door body 2 corresponds to the opening to enable the box body 1 to be opened or closed.

[0049] In the present application, there are multiple limiting members 13, and the multiple limiting members 13 are spaced apart along the extension direction of the second top surface 12; there are multiple engaging portions 21, and the multiple engaging portions 21 are arranged in a one-to-one correspondence with the multiple limiting members 13. This arrangement allows the multiple engaging portions 21 to cooperate with the multiple limiting members 13 to position the door body 2, thereby ensuring the matching accuracy between the door body 2 and the box body 1.

[0050] In the embodiment provided by the present invention, the limiting component 13 includes: a support column 130, which is provided on the second top surface 12; a limiting clamp 131, which is provided on the support column 130, and the projected area of ​​the orthographic projection of the limiting clamp 131 on the horizontal plane is larger than the projected area of ​​the orthographic projection of the support column 130 on the horizontal plane; and the engaging portion 21 includes an engaging opening 210, and at least a portion of the support column 130 is engaged with the engaging opening 210. By making the projected area of ​​the orthographic projection of the limiting clamp 131 on the horizontal plane larger than the projected area of ​​the orthographic projection of the support column 130 on the horizontal plane, when the door body 2 is in the closed position, the blocking effect of the limiting clamp 131 and the engaging portion 21 in the vertical direction can be utilized to cooperate with the limiting slide 11 to prevent the door body 2 from being lifted up.

[0051] Furthermore, if Figure 5 As shown, the door body 2 is further provided with a locking support strip 22. The two sides of the locking support strip 22 are spaced apart from the door body 2 and the second top surface 12 of the box body 1. The locking opening 210 is provided on the locking support strip 22. The blocking effect of the limiting clamp 131 on the main body of the locking support strip 22 that surrounds the locking opening 210 ensures the strength of the door body 2 in the closed position, thereby ensuring the sealing and pressure-bearing properties of the box body 1.

[0052] In order to make the door body 2 slide smoothly, Figure 3As shown, the door body 2 is provided with an avoidance portion 23 , which is recessed relative to the inner wall surface of the door body 2 . When the door body 2 moves, the limit component 13 is avoided by the avoidance portion 23 .

[0053] like Figure 3 As shown, the box body 1 is provided with a stopper component 14, which includes a first body 141, a second body 142, and a third body 143 connected in sequence. The first body 141 is provided on the first top surface 10 of the box body 1 and is opposite to the third body 143, so as to form a limiting slide 11 between the first body 141, the second body 142, and the third body 143. A baffle 15 is provided on the first body 141 and the third body 143, respectively. The baffle 15 is opposite to the second body 142, and there is a passage gap between the two baffles 15 for the passage of the door body 2. The baffle 15 blocks the door body 2 so that the door body 2 always slides within the limiting slide 11. At the same time, the third body 143 blocks the door body 2 in the vertical direction to prevent the door body 2 from being pushed open.

[0054] In a specific implementation, the transport box further includes: a sliding plate 24, which is disposed on the door body 2, and is connected to the door body 2 via a connecting piece 25, wherein an angle is formed between the plate surface of the sliding plate 24 and the surface of the connecting piece 25; the sliding plate 24 cooperates with the limiting slide 11 to allow the door body 2 to slide along the extension direction of the limiting slide 11. Preferably, the sliding plate 24 and the connecting piece 25 are perpendicular to each other, the sliding plate 24 is perpendicular to the first top surface 10, and the connecting piece 25 is parallel to the first top surface. In this way, the baffle 15 blocks the sliding plate 24 to prevent the sliding plate 24 from falling out of the limiting slide 11, and the connecting piece 25 is used to connect the sliding plate 24 and the door body 2, and the connecting piece 25 passes through the gap between the two baffles 15.

[0055] like Figure 2 As shown, the end of the sliding plate 24 is provided with a guide end surface 240, which is an arc-shaped surface. The third body 143 is provided with an avoidance recess 1430. At least a portion of the guide end surface 240 contacts the end surface of the third body 143 that forms the avoidance recess 1430, so that the sliding plate 24 moves into the limiting slide 11. In this way, when the door body 2 moves from the open position to the closed position, the door body 2 must first be lifted and the sliding plate 24 inserted into the limiting slide 11. In order to prevent the sliding plate 24 from being misaligned with the limiting slide 11 and causing the door body 2 to become stuck, the guide end surface 240 at the end of the sliding plate 24 is used to fit with the avoidance recess 1430 on the third body 143. Then, when the door body 2 is lifted and gradually moves to the horizontal position, the sliding plate 24 is guided to ensure that the door body 2 can slide horizontally to the closed position.

[0056] Specifically, the transport box further comprises: a middle blocking piece 16 arranged on the first top surface 10 of the box body 1 and located in the middle of the first top surface 10, the middle blocking piece 16 is in a cylindrical shape, and a limiting gap 160 is arranged on the body of the middle blocking piece 16; a connecting notch 250 is arranged on the connecting piece 25, at least part of the connecting notch 250 is clamped with the limiting gap 160, and the blocking effect of the limiting gap 160 on the connecting notch 250 makes the door body 2 in the closed position.

[0057] Among them, the door body 2 of the present application is two, the two door bodies 2 slide relative to each other, by arranging the middle blocking piece 16, the sealing property of the two door bodies 2 at the abutting position is ensured when the two door bodies 2 are in the closed position. The stop component 14 includes a first stop component 144 and a second stop component 146, the first stop component 144 and the second stop component 146 are respectively located on both sides of the middle blocking piece 16, and the two door bodies 2 are respectively matched with the first stop component 144 and the second stop component 146 to make the door body in the closed position.

[0058] In the specific implementation process, the box body 1 includes a box body framework 17 and a box body cladding layer 18, the box body cladding layer 18 is cladded on the box body framework 17, when transporting materials, the transport bag is in contact with the box body cladding layer 18, which can make the transport bag bear force evenly and avoid the risk of the transport bag being torn by the box body framework 17, preferably, the box body framework 17 is made of metal material, the box body cladding layer 18 is made of plastic material, and the box body framework 17 and the box body cladding layer 18 are connected through an injection molding process, which not only ensures the pressure bearing capacity of the box body 1, but also reduces the overall weight of the box body 1.

[0059] Further, the door plate 2 includes a door plate framework 27 and a door plate cladding layer 28, the door plate framework 27 is made of metal material, the door plate cladding layer 28 is made of plastic material, and the door plate framework 27 and the door plate cladding layer 28 are connected through an injection molding process, the door plate cladding layer 28 is in contact with the box body cladding layer 18, which reduces the friction between the door plate 2 and the box body 1 during sliding, and also ensures that the door plate 2 and the box body 1 realize surface contact, thereby improving the sealing property.

[0060] Specifically, the box body 1 includes a base 4 and a plurality of side plates 5, the plurality of side plates 5 are sequentially connected along the circumferential direction of the base 4 to enclose a space for accommodating materials, the side plate 5 includes a first side plate 51 and a second side plate 52 connected to each other, the limiting slide 11 is arranged on the second side plate 52, the first leaf 31 of the hinged assembly 3 is arranged on the first side plate 51, and the base 4 is provided with a discharge port 44, through which the materials in the box body 1 are discharged.

[0061] Among them, the plurality of side plates 5 are reversibly arranged relative to the base 4, when the transport box is stored, the side plates 5 can be flipped to fold the box body, for example Figure 8As shown, first, the door body 2 is opened to the side of the first side plate 51, and then the second side plate 52 and the first side plate 51 are turned over in sequence to fold the transport box, which can reduce the storage space when the transport box is in the folded state, and make the components of the transport box in the folded state more compact.

[0062] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0063] According to the transport box provided by the present application, the door body 2 can be opened to the side of the box body 1, and the door body 2 can be opened to the side of the box body 1, which solves the problem that the opening range of the door body 2 is limited due to the direct hinging of the door body 2 and the box body 1 in the prior art.

[0064] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A transport box, characterized in that: include: A box (1) for containing materials; A door body (2) is slidably arranged on the box body (1) to open or close the box body (1); A hinge assembly (3) is provided on the box body (1), and the hinge assembly (3) includes a first leaf (31) and a second leaf (32) hinged to each other, the first leaf (31) is fixedly connected to the box body (1), the second leaf (32) is provided with a first matching portion (320), and the door body (2) is provided with a second matching portion (20), when the door body (2) is opened to a predetermined opening position, the second matching portion (20) is engaged with the first matching portion (320), and the door body (2) is turned over along with the second leaf (32), so that the door body (2) is located to the side of the box body (1).

2. The transport box according to claim 1, characterized in that: The first matching portion (320) and the second matching portion (20) are interference-fitted, the first matching portion (320) is a matching opening, and the second matching portion (20) is a matching protrusion.

3. The transport box according to claim 1, characterized in that: The first matching portion (320) is a matching opening, and the second matching portion (20) comprises: Cooperating with the upright column (201), it is arranged on the door body (2); A limit stopper (202) is provided on the matching column (201), and at least a portion of the matching column (201) is engaged in the matching opening so that the limit stopper (202) drives the second leaf (32) to flip over; the matching opening blocks the matching column (201), so that the door body (2) is located to the side of the box body (1).

4. The transport box according to claim 1, characterized in that: The second leaf (32) has an initial position and a flip position, at least a portion of the second leaf (32) is located above the first leaf (31), and a gap is provided between the second leaf (32) and the first leaf (31), so that the second leaf (32) is in the initial position; At least a portion of the second matching portion (20) is engaged with the first matching portion (320) via the passing gap.

5. The transport box according to claim 1, characterized in that: The second leaf (32) comprises a hinged end and a mating end that are arranged opposite to each other, the hinged end of the second leaf (32) being hinged to the first leaf (31), and the mating end of the second leaf (32) extending toward the inner side of the box body (1); The first matching portion (320) is arranged at the matching end of the second leaf (32); The first matching portion (320) is a matching opening, and the matching opening faces the inner side of the box body (1).

6. The transport box according to claim 1, characterized in that: The hinge assembly (3) further comprises: A supporting component (33) is provided on the second leaf (32), wherein the supporting component (33) has a supporting end surface, and the supporting end surface is an arc-shaped surface; At least a portion of the supporting end surface contacts the door body (2) to support the door body (2).

7. The transport box according to claim 6, characterized in that: The second fan leaf (32) comprises a first flip surface and a second flip surface that are arranged opposite to each other, the first flip surface is opposite to the first fan leaf (31), and the supporting component (33) is arranged on the second flip surface.

8. The transport box according to claim 6, characterized in that: The hinge assembly (3) further comprises: A support frame (34) is arranged on the second sash (32), the support frame (34) protrudes relative to the surface of the second sash (32), there are two support frames (34), the two support frames (34) are opposite to each other and spaced apart, the supporting component (33) is arranged between the two support frames (34), and the supporting component (33) is respectively connected to the two support frames (34).

9. The transport box according to claim 6, characterized in that: The door body (2) is provided with a limiting groove (26) that cooperates with the supporting component (33), and the limiting groove (26) extends along the sliding direction of the door body (2). At least a portion of the supporting component (33) is located in the limiting groove (26), and at least a portion of the supporting end surface is in contact with the bottom surface of the limiting groove (26).

10. The transport box according to any one of claims 6 to 9, characterized in that The supporting component (33) is rotatably arranged around a predetermined axis; and / or the supporting component (33) is a bearing.

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