Anti-fall buffer packaging box

Abstract

The present invention discloses an anti-falling buffer packaging box. It includes side plate components and two pop-up components. The two pop-up components are arranged in one-to-one correspondence with each coupling component. The pop-up component includes a sliding member, an elastic member, a bracket, and an elastic module. The sliding member is slidably arranged on the side plate component. One end of the sliding member abuts against the side walls of two first sections, and the other end is connected to the elastic member. The end of the elastic member away from the sliding member is connected to the side plate component. The bracket is rotatably connected to the connecting shaft. The bracket has an extended position extending to the side away from the inner space of the box body in its rotation path and a closed position clamped to the sliding member. When the bracket rotates from the extended position to the closed position, the elastic module can store energy. The axial movement of the connecting shaft when it is impacted can cause the second section to squeeze the sliding member to move and release the clamping between the sliding member and the bracket. The present invention solves the technical problem that the corners and edges of the existing packaging box are easily damaged by multiple impacts during falling, resulting in damage to the internal items.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging boxes, and in particular to a fall-proof and shock-absorbing packaging box. Background Art

[0002] In modern logistics transportation, as the core carrier for protecting goods, the performance of packaging boxes directly affects the safety and efficiency of commodity transportation.

[0003] Currently, the mainstream packaging materials in the market mainly include three major systems: wood-based (thick wooden boards, plywood), corrugated cardboard, and plastics, but all have significant technical defects. Wood packaging boxes are prone to becoming carriers of pests and diseases due to their natural pore structure and are strictly restricted by international phytosanitary measures standards; the formaldehyde-based adhesives used in the preparation of plywood pose a risk of VOCs release, and the non-degradable materials increase the environmental protection cost. Although plastic boxes avoid the problems of biosafety and chemical pollution, they face the environmental pressure of non-degradable materials and the restriction of high raw material costs. As an alternative, corrugated cardboard boxes have environmental protection advantages, but due to the mechanical properties of fiber materials, their compressive strength is positively correlated with thickness, and it is difficult to break through the compressive limit of 3 kN / m² under the premise of maintaining reasonable costs. At the same time, there are technical bottlenecks such as low buffer energy absorption efficiency (the energy absorption rate under dynamic impact is less than 40%) and weakness at the corners and edges under multiple impacts. According to statistics, the loss rate of goods due to insufficient packaging protection during the logistics process is as high as 1.2% - 3.5%, and the main cause of damage to precision instruments and fragile items is that the instantaneous acceleration caused by rigid collision exceeds 50G. Summary of the Invention

[0004] In view of this, the present invention provides a fall-proof and shock-absorbing packaging box, which is used to solve the technical problem that the corners and edges of the existing packaging box are easily damaged by multiple impacts during falling, thereby causing damage to the internal items.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] A fall-proof and shock-absorbing packaging box, the packaging box includes four side plate mechanisms, two flat plates, and a plurality of connecting shaft components for connecting the side plate mechanisms and the flat plates, and there are gaps at the corners surrounding to form a box structure;

[0007] The side plate mechanism is provided with two first protrusions at both ends of the two flat plate members. Two second protrusions capable of extending between the two first protrusions are provided on the peripheral side walls of each flat plate member. A coupling shaft assembly includes two connecting shafts. Each connecting shaft passes through a first protrusion and a second protrusion respectively. One end of the connecting shaft is located in the notch, and the other end is located between the two second protrusions. A convex block is detachably connected to the end of the connecting shaft away from the notch. The convex block has a first section and a second section with a radial dimension larger than that of the first section.

[0008] The side plate mechanism includes a side plate member and two ejection assemblies. The two ejection assemblies are arranged in one-to-one correspondence with the coupling shaft assemblies. The ejection assembly includes a sliding member, an elastic member, a bracket, and an elastic module. The sliding member is slidably disposed on the side plate member. One end of the sliding member abuts against the side walls of the two first sections, and the other end is connected to the elastic member. The end of the elastic member away from the sliding member is connected to the side plate member. The bracket is rotatably connected to the connecting shaft. The bracket has a protruding position extending to the side of the coupling shaft assembly away from the inner space of the box body in its rotation path, and a closed position clamped to the sliding member. When the bracket rotates from the protruding position to the closed position, the elastic module can store energy. The axial movement of the connecting shaft when it is impacted can cause the second section to squeeze the sliding member to move and release the clamping between the sliding member and the bracket.

[0009] In some embodiments of the anti-falling and shock-absorbing packaging box, the packaging box further includes a plurality of expansion packs. The expansion pack includes a mounting frame, a thorn, a first box, and a second box. The mounting frame is fixedly connected to the inner wall of the notch. The first box is received in the second box and fixedly connected to the bottom of the second box. Water is stored in the first box. An absorbent expansion material is stored in the second box. The second box is fixedly connected to the mounting frame. The thorn is fixedly connected to the mounting frame. The extending direction of the thorn points to the second box so as to be able to puncture the second box and the first box in sequence when impacted, causing the absorbent expansion material to absorb water and expand.

[0010] In some embodiments of the anti-falling and shock-absorbing packaging box, the distance between the end of the thorn away from the second box and the second box is a first distance, and the distance between the end of the connecting shaft extending into the notch and the second box is a second distance. The first distance is smaller than the second distance.

[0011] In some embodiments of the anti-falling and shock-absorbing packaging box, each bracket includes a support rod and two rotating rods. Each rotating rod in one bracket is rotatably connected to each connecting shaft in one-to-one correspondence. Both ends of the support rod are connected to the ends of the rotating rods away from the connecting shaft.

[0012] In some embodiments of the anti-falling buffer packaging box, each of the brackets includes a support plate and two rotating rods. Each of the rotating rods in one bracket is rotatably connected to each of the connecting shafts in a one-to-one correspondence, and both ends of the support plate are respectively connected to the ends of the rotating rods away from the connecting shafts.

[0013] In some embodiments of the anti-falling buffer packaging box, the surface of the side plate member is provided with a groove, the sliding member is slidably connected to the bottom of the groove, and the bracket is received in the groove when in the closed position.

[0014] In some embodiments of the anti-falling buffer packaging box, the elastic module includes a first telescopic rod, a second telescopic rod and two sets of torsion springs. The first telescopic rod is rotatably connected to the side wall of the groove, and the other end is rotatably connected to the second telescopic rod through the torsion spring. The end of the second telescopic rod away from the first telescopic rod is fixedly connected to the support plate, and the other side of the support plate facing away from the second telescopic rod is rotatably connected to the rotating rod through the torsion spring.

[0015] In some embodiments of the anti-falling buffer packaging box, the support plate is provided with mesh holes.

[0016] In some embodiments of the anti-falling buffer packaging box, the side plate mechanism further includes a connecting pipe, an inner plate member, a first honeycomb airbag and a second honeycomb airbag. One side of the first honeycomb airbag is bonded to the inner side of the side plate member, and the other side is bonded to the inner plate member. The side of the inner plate member facing away from the first honeycomb airbag is bonded to the second honeycomb airbag;

[0017] The side plate member is provided with a through ventilation hole, the inner plate member is provided with an air passage, the air inlet of the air passage is communicated with the ventilation hole through the connecting pipe, and the air outlet of the air passage is communicated with each unit on the first honeycomb airbag and the second honeycomb airbag.

[0018] Implementing the embodiments of the present invention will at least have the following beneficial effects:

[0019] The above anti-fall buffer packaging box has a buffer and anti-collision end effect. Specifically, for the anti-fall buffer packaging box of the present invention, after a fall occurs and the corners of the box body collide, the connecting shaft will move axially with the bumps thereon. The axial movement of the bumps will cause the sliding member to be pushed by the second section and compress the elastic member. After the sliding member moves, the clamping relationship between the sliding member and the bracket will be released. Then, the bracket whose clamping relationship has been released will rotate from the closed position to the extended position under the action of the elastic module. The bracket in the extended position will act like a leg to support the box body structure, avoiding further damage to the box body. Moreover, the combination of the elastic module and the bracket can also play a certain elastic buffering role, thus solving the technical problem that the corners and edges of the existing packaging box are easily damaged by multiple impacts during a fall, resulting in damage to the internal items. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 Schematic diagram of the overall packaging box when the bracket is in the closed position in one embodiment;

[0022] Figure 2 Schematic diagram of the overall packaging box when the bracket is in the extended position in one embodiment;

[0023] Figure 3 For Figure 1 Structural cross-sectional view of part A-A in

[0024] Figure 4 For Figure 3 Enlarged structural view of part B in

[0025] Figure 5 Top view of the packaging box in one embodiment;

[0026] Figure 6 For Figure 5 Structural cross-sectional view of part C-C in

[0027] Figure 7 For Figure 2 Enlarged structural view of part D in

[0028] Figure 8 For Figure 2 Enlarged structural view of part E in

[0029] Figure 9 Schematic diagram of the expansion pack and its connection structure in an embodiment;

[0030] Figure 10 is Figure 9 front view of the structure shown;

[0031] Figure 11 is Figure 10 schematic cross-sectional view of the structure of the F-F part in;

[0032] Wherein:

[0033] 1. Side plate mechanism; 11. Side plate part; 111. First protrusion; 112. Groove; 113. Vent hole; 12. Pop-up assembly; 121. Sliding part; 1211. Claw; 122. Elastic part; 1231. Support plate; 12311. Card slot; 1232. Rotating rod; 1241. First telescopic rod; 1242. Second telescopic rod; 1243. Torsion spring; 13. Inner plate part; 131. Air duct; 14. First honeycomb airbag; 15. Second honeycomb airbag;

[0034] 2. Flat plate part; 21. Second protrusion;

[0035] 3. Coupling shaft assembly; 31. Connecting shaft; 32. Bump; 321. First section; 322. Second section;

[0036] 4. Expansion pack; 41. Mounting frame; 42. Needle; 43. Second box; 44. First box; 45. Third box;

[0037] 100. Notch. Detailed implementation manners

[0038] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure content of the present invention more thorough and comprehensive.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0041] Here, it should be noted that various connection methods involved in the present invention can be arbitrary when there is no specific description. For example, a fixed connection can be achieved by bolts and nuts for detachable fixation, welding, or integral molding, etc. A sliding connection can be achieved by various groove-shaped or guide-rail-shaped structures, and a rotational connection can be achieved by hinges, rotating shafts, etc. Any existing methods capable of achieving the corresponding connection relationship are acceptable.

[0042] The following will be combined with Figures 1 - 11 to further illustrate the anti-falling buffer packaging box involved in the present invention.

[0043] In an embodiment of an anti-falling buffer packaging box, combined with Figures 1 - 6 , the packaging box includes four side plate mechanisms 1, two flat plates 2, and a plurality of coupling assemblies 3 for connecting the side plate mechanisms 1 and the flat plates 2. There are gaps 100 at the corners surrounding to form the box structure. Two first protrusions 111 are provided at both ends of each side plate mechanism 1 relative to the two flat plates 2, and two second protrusions 21 capable of extending between the two first protrusions 111 are provided on the peripheral side walls of each flat plate 2. A coupling assembly 3 includes two connecting shafts 31. Each connecting shaft 31 passes through a first protrusion 111 and a second protrusion 21 respectively. One end of the connecting shaft 31 is located in the gap 100, and the other end is located between the two second protrusions 21. A convex block 32 is detachably connected to the end of the connecting shaft 31 away from the gap 100. The convex block 32 has a first section 321 and a second section 322 with a radial dimension larger than that of the first section 321. The side plate mechanism 1 includes a side plate member 11 and two pop-up assemblies 12. The two pop-up assemblies 12 are provided in one-to-one correspondence with each coupling assembly 3. The pop-up assembly 12 includes a sliding member 121, an elastic member 122, a bracket, and an elastic module. The sliding member 121 slides on the side plate member 11. One end of the sliding member 121 abuts against the side walls of the two first sections 321, and the other end is connected to the elastic member 122. The end of the elastic member 122 away from the sliding member 121 is connected to the side plate member 11. The bracket is rotatably connected to the connecting shaft 31. The bracket has an extended position extending to the side of the coupling assembly 3 away from the inner space of the box on its rotation path, and a closed position clamped to the sliding member 121. When the bracket rotates from the extended position to the closed position, the elastic module can store energy. The axial movement of the connecting shaft 31 when being impacted can cause the second section 322 to squeeze the sliding member 121 to move and release the clamping between the sliding member 121 and the bracket.

[0044] In this embodiment, after the box falls and collides with the corners, the connecting shaft 31 will move axially with the protrusion 32 thereon. The axial movement of the protrusion 32 will cause the sliding member 121 to be pushed by the second section 322 and compress the elastic member 122. After the sliding member 121 moves, the clamping relationship between the sliding member 121 and the bracket will be released, and then the bracket that has contacted the clamping relationship will be rotated from the closed position to the disengaged position under the action of the elastic module. The bracket in the disengaged position will play a role similar to a support leg to support the box structure to avoid further damage to the box. In addition, the combination of the elastic module and the bracket can also play a certain elastic buffering role, thereby solving the technical problem that the corners and edges of the existing packaging box are easily damaged by multiple impacts during falling, resulting in damage to the internal items.

[0045] By applying the anti-falling cushioning packaging box of the present invention, high-value items can be better protected.

[0046] Specifically, the first protrusion 111 and the second protrusion 21 are provided with holes for the shaft to pass through, thereby connecting the flat member 2 to the side panel mechanism 1. The bump 32 can be installed after the connecting shaft 31 passes through the first protrusion 111 and the second protrusion 21. The bump 32 and the connecting shaft 31 are secured by being fitted over the end of the connecting shaft 31 and then screwed into the side of the bump 32 to press against the connecting shaft 31. Furthermore, the bump 32 can have a combination of cylindrical and conical shapes, with the cylindrical portion forming the second section 322 and the conical portion forming the first section 321.

[0047] More specifically, the elastic module can be a spring or an elastic body made of a flexible material such as silicone, with one end connected to the bracket and the other end connected to the side panel 11. When the bracket rotates from the extended position to the closed position, the elastic module is compressed. The bracket and the sliding member 121 can be connected by a slot 12311 and a claw 1211. The supporting member can be a rod-shaped structure or a plate-shaped structure.

[0048] It should also be noted that when the side panel mechanism 1 and the two flat plate members 2 are arranged to form a box structure with a notch 100, the notch 100 can be used to detachably install three panels by bolting together the connecting shaft 31, thereby closing the box.

[0049] It is understandable that when the side wall of the packaging box collides, it will not cause much damage due to the large contact area. The present invention is aimed at the corners and edges of the packaging box.

[0050] In an embodiment of a fall-proof cushioning packaging box, Figure 1 、 Figures 9 - 11, the packing box further includes a plurality of expansion packs 4. The expansion pack 4 includes a mounting frame 41, a stabbing needle 42, a first box 44 and a second box 43. The mounting frame 41 is fixedly connected to the inner wall of the notch 100. The first box 44 is received in the second box 43 and is fixedly connected to the bottom of the second box 43. Water is stored in the first box 44, and a water-absorbing expansion material is stored in the second box 43. The second box 43 is fixedly connected to the mounting frame 41. The stabbing needle 42 is fixedly connected to the mounting frame 41. The extending direction of the stabbing needle 42 points to the second box 43 so as to be able to puncture the second box 43 and the first box 44 in sequence when being impacted, enabling the water-absorbing expansion material to absorb water and expand.

[0051] In this embodiment, the stabbing needle 42 can puncture the first box 44 and the second box 43, and the stabbing needle 42 can also destroy the first box 44 and the second box 43, facilitating the contact between water and the water-absorbing expansion material. Specifically, the water-absorbing expansion material can be hydrogel or water-absorbing resin.

[0052] Specifically, the stabbing needle 42 can be a columnar structural member, and a tip is provided at one end thereof facing the box. After the tip of the stabbing needle 42 penetrates, the hole formed by stabbing is enlarged through the columnar structure to form damage, which can prompt the water in the first box 44 to flow out and prevent it from being blocked by the stabbing needle 42. Preferably, the stabbing needle 42 can also be a hollow structure, and a plurality of small holes are formed on its circumferential surface. Even if it is blocked, the water can still flow out through the small holes.

[0053] Preferably, structures such as air bags and bags can be additionally provided to play the role of holding the expanded object after the water and the water-absorbing expansion material come into contact, so as to better protect the corners.

[0054] In addition, the water-absorbing expansion material can also adopt existing foaming agents. A third box 45 can be additionally provided to contain compressed gas. The compressed gas refines the water and reacts with the foaming agent to form a buffer foam and expand.

[0055] In an embodiment of an anti-falling buffer packing box, as Figure 1 、 Figure 5 、 Figures 9 - 11 shown, the distance between the end of the stabbing needle 42 far from the second box 43 and the second box 43 is a first distance, and the distance between the end of the connecting shaft 31 extending into the notch 100 and the second box 43 is a second distance. The first distance is less than the second distance.

[0056] In this embodiment, as shown in the attached drawings, the stabbing needle 42 is closer to the inside of the box body than the end of the connecting shaft 31, that is, the end of the connecting shaft 31 blocks the outside of the whole expansion pack 4. After a falling collision occurs, the connecting shaft 31 moves axially to open the bracket first, and further collision will trigger the expansion pack 4 to expand.

[0057] Combined with the previous embodiments, the specific structural composition of the bracket can be the following two embodiments:

[0058] In an embodiment of a fall - prevention buffer packaging box, each bracket includes a support rod and two rotating rods 1232. Each of the rotating rods 1232 within one bracket is rotatably connected to each connecting shaft 31 in a one - to - one correspondence, and both ends of the support rod are connected to the ends of the rotating rods 1232 away from the connecting shaft 31.

[0059] In an embodiment of a fall - prevention buffer packaging box, as Figure 1 , Figure 2 , Figure 7 and Figure 8 , each bracket includes a support plate 1231 and two rotating rods 1232. Each of the rotating rods 1232 within one bracket is rotatably connected to each connecting shaft 31 in a one - to - one correspondence, and both ends of the support plate 1231 are connected to the ends of the rotating rods 1232 away from the connecting shaft 31.

[0060] In the above two embodiments, the difference lies in whether it is a support rod or a support plate 1231, and both rod - shaped and plate - shaped structural members are acceptable.

[0061] In an embodiment of a fall - prevention buffer packaging box, a groove 112 is formed on the surface of the side plate member 11. The sliding member 121 is slidably connected to the bottom of the groove 112, and the bracket is received in the groove 112 when in the closed position.

[0062] In this embodiment, by providing the groove 112, it is possible to better place the bracket and the elastic module, achieving the effect that the bracket and the elastic module do not protrude outside the side plate member 11 when in the closed position.

[0063] It can be understood that the number of grooves 112 is also multiple, corresponding to the number of brackets.

[0064] In an embodiment of a fall - prevention buffer packaging box, as Figure 2 , Figure 7 and Figure 8 , the elastic module includes a first telescopic rod 1241, a second telescopic rod 1242, and two groups of torsion springs 1243. The first telescopic rod 1241 is rotatably connected to the side wall of the groove 112, and the other end is rotatably connected to the second telescopic rod 1242 through the torsion spring 1243. The end of the second telescopic rod 1242 away from the first telescopic rod 1241 is fixedly connected to the support plate 1231, and the other side of the support plate 1231 facing away from the second telescopic rod 1242 is rotatably connected to the rotating rod 1232 through the torsion spring 1243.

[0065] In this embodiment, by providing two telescopic rods, and the connection relationships between them are all through rotation around the rotating shaft, a link combination can be formed in this way. In addition, two groups of torsion springs 1243 are provided. The torsion spring 1243 is an elastic component with rotational elasticity in a specific rotational direction, making the expansion of the support rod or the support plate 1231 smoother.

[0066] It can be understood that when the bracket is latched from the extended position to the closed position and latched with the slider 121, the two sets of torsion springs 1243 store energy. When the connection shaft 31 is collided and the latching is released, under the action of the two sets of torsion springs 1243, the two telescopic rods and the bracket are unfolded and extended.

[0067] Preferably, in combination Figure 1 and Figure 2 , the number of elastic modules is also multiple groups, one group has two, and the two respectively correspond to the two rotating rods 1232.

[0068] The shaft for installing the torsion spring 1243 can also directly adopt a torsion spring shaft or a torque hinge.

[0069] Such as Figure 4 shows the latching method of the support plate 1231 and the slider 121.

[0070] In an embodiment of a fall - prevention and buffer packaging box, the support plate 1231 is provided with mesh holes.

[0071] In an embodiment of a fall - prevention and buffer packaging box, such as Figure 3 , the side - plate mechanism 1 further includes a connecting pipe, an inner plate member 13, a first honeycomb airbag 14 and a second honeycomb airbag 15. One side of the first honeycomb airbag 14 is bonded to the inner side of the side - plate member 11, and the other side is bonded to the inner plate member 13. The side of the inner plate member 13 facing away from the first honeycomb airbag 14 is bonded to the second honeycomb airbag 15. The side - plate member 11 is provided with a ventilation hole 113. An air passage 131 is provided inside the inner plate member 13. The air inlet of the air passage 131 is communicated with the ventilation hole 113 through the connecting pipe, and the air outlet of the air passage 131 is communicated with each unit of the first honeycomb airbag 14 and the second honeycomb airbag 15.

[0072] In this embodiment, by installing the first honeycomb airbag 14 and the second honeycomb airbag 15 on both sides of the inner plate member 13, it can bulge to play a role in protecting the internal objects. And by providing the air passage 131 in the inner plate member 13, it can inflate the two honeycomb airbags simultaneously through the ventilation hole 113 at one time. Each honeycomb airbag has independent small units. After all bulging, it can ensure the relative positions of the inner plate member 13 and the side - plate member 11.

[0073] It can be understood that after inflation, the ventilation hole 113 can be sealed by a plug.

[0074] Preferably, the inner plate member 13, the first honeycomb airbag 14 and the second honeycomb airbag 15 can also be provided on the flat plate member 2 in the same way as on the side - plate member 11. Further preferably, the peripheral side walls of the inner plate member 13 are all inclined surfaces, and the inclined surfaces face away from the side - plate member 11 and the flat plate member 2, so that the inclined side walls of the six inner plate members 13 can abut against each other.

[0075] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0076] The above embodiments only express several implementation manners of the present invention, and the description is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of this invention patent shall be subject to the appended claims.

Claims

1. An anti-falling buffer packaging box, characterized in that, The packaging box includes four side plate mechanisms, two flat plates, and a plurality of coupling components for connecting the side plate mechanisms to the flat plates. There are gaps at the corners where the box structure is enclosed; Two first protrusions are provided at both ends of the side plate mechanism relative to the two flat plates. Two second protrusions capable of extending between the two first protrusions are provided on the peripheral side walls of each flat plate; One coupling component includes two connecting shafts. Each connecting shaft passes through one of the first protrusions and one of the second protrusions respectively. One end of the connecting shaft is located in the gap, and the other end is located between the two second protrusions; A convex block is detachably connected to the end of the connecting shaft away from the gap. The convex block has a first section and a second section with a radial dimension larger than the first section; The side plate mechanism includes a side plate member and two ejection components. The two ejection components are arranged in one-to-one correspondence with each coupling component. The ejection component includes a sliding member, an elastic member, a bracket, and an elastic module. The sliding member slides on the side plate member. One end of the sliding member abuts against the side walls of the two first sections, and the other end is connected to the elastic member. The end of the elastic member away from the sliding member is connected to the side plate member. The bracket is rotatably connected to the connecting shaft. The bracket has an extended position extending to the side away from the inner space of the box on the coupling component in its rotation path, and a closed position clamped to the sliding member. When the bracket rotates from the extended position to the closed position, the elastic module can store energy. The axial movement of the connecting shaft when it is impacted can cause the second section to squeeze the sliding member to move and release the clamping between the sliding member and the bracket.

2. The anti-falling buffer packaging box according to claim 1, wherein, The packaging box further includes a plurality of expansion packs. The expansion pack includes a mounting frame, a thorn, a first box, and a second box. The mounting frame is fixedly connected to the inner wall of the gap. The first box is received in the second box and fixedly connected to the bottom of the second box. Water is stored in the first box. An absorbent expansion material is stored in the second box. The second box is fixedly connected to the mounting frame. The thorn is fixedly connected to the mounting frame. The extending direction of the thorn points to the second box so that the absorbent expansion material can absorb water and expand by successively piercing the second box and the first box when impacted.

3. The anti-falling buffer packaging box according to claim 2, characterized in that, The distance from the end of the thorn away from the second box to the second box is a first distance, and the distance from the end of the connecting shaft extending into the gap to the second box is a second distance. The first distance is less than the second distance.

4. The anti-falling and buffering packing box according to claim 1, characterized in that Each bracket includes a support rod and two rotating rods. Each rotating rod in one bracket is rotatably connected to each connecting shaft in one-to-one correspondence. The two ends of the support rod are respectively connected to the ends of the rotating rods away from the connecting shaft.

5. The anti-falling buffer packaging box according to claim 1, wherein, Each bracket includes a support plate and two rotating rods. Each rotating rod in one bracket is rotatably connected to each connecting shaft in one-to-one correspondence. The two ends of the support plate are respectively connected to the ends of the rotating rods away from the connecting shaft.

6. The anti-falling buffer packaging box according to claim 5, wherein A groove is formed on the surface of the side plate member, the sliding member is slidably connected to the bottom of the groove, and the bracket is received in the groove when in the closed position.

7. The anti-falling buffer packaging box according to claim 6, wherein, The elastic module includes a first telescopic rod, a second telescopic rod and two sets of torsion springs. The first telescopic rod is rotatably connected to the side wall of the groove, and the other end is rotatably connected to the second telescopic rod through the torsion spring. The end of the second telescopic rod away from the first telescopic rod is fixedly connected to the support plate, and the other side of the support plate facing away from the second telescopic rod is rotatably connected to the rotating rod through the torsion spring.

8. The anti-falling buffer packaging box according to claim 6, characterized in that, The support plate is provided with mesh holes.

9. The anti-falling buffer packaging box according to claim 1, wherein The side plate mechanism further includes a connecting pipe, an inner plate member, a first honeycomb airbag and a second honeycomb airbag. One side of the first honeycomb airbag is bonded to the inner side of the side plate member, and the other side is bonded to the inner plate member. The side of the inner plate member facing away from the first honeycomb airbag is bonded to the second honeycomb airbag. A ventilation hole is formed on the side plate member. An air passage is provided in the inner plate member. The air inlet of the air passage is communicated with the ventilation hole through the connecting pipe, and the air outlet of the air passage is communicated with each unit of the first honeycomb airbag and the second honeycomb airbag.

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