CN109775091B

CN109775091B - Pressure-resistant corrugated carton

Info

Publication number: CN109775091B
Application number: CN201910237715.1A
Authority: CN
Inventors: 彭灿; 李训祺; 韦伟
Original assignee: Raoping Unified Paper Products Co Ltd
Current assignee: Raoping unified paper products Co., Ltd
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2020-07-21
Anticipated expiration: 2039-03-27
Also published as: CN109775091A

Abstract

The invention belongs to the technical field of corrugated cartons, and particularly relates to a pressure-resistant corrugated carton which comprises an outer box body, an inner box body, a box cover, a sliding springback mechanism, a first supporting mechanism, a second supporting mechanism and a third supporting mechanism; the upper end of the first elastic telescopic rod is fixedly connected to the lower surface of the first metal elastic sheet, the lower end of the first metal elastic sheet is fixedly connected to the upper end of the first rotating shaft, and supporting rods are arranged on two sides of the first metal elastic sheet; the upper end of the supporting rod is fixedly connected to the lower surfaces of the two ends of the first metal elastic sheet, and the lower end of the supporting rod is fixedly connected to the first rotating shaft; the lower end of the first rotating shaft is symmetrically and rotatably connected with sliding rods; the lower end of the sliding rod is slidably arranged in the inclined plate; the lower end of the inclined plate is hinged to the inner lower surface of the outer box body; the connecting telescopic rod is hinged on the inclined plates in the two adjacent second supporting mechanisms; the corrugated case is mainly used for solving the problems that the existing corrugated case is poor in pressure resistance, easy to break and deform in the transportation process and inconvenient to open.

Description

Pressure-resistant corrugated carton

Technical Field

The invention belongs to the technical field of corrugated cartons, and particularly relates to a pressure-resistant corrugated carton.

Background

The corrugated paper board is made into a corrugated paper box through die cutting, indentation, box nailing or box gluing. The corrugated case is a packaging product with the widest application, and the use amount is always the first of various packaging products. Comprises a calcium plastic corrugated case. For more than half a century, corrugated cartons gradually replace transport packaging containers such as wooden boxes and the like with excellent service performance and good processing performance, and become the leading force of transport packaging. It not only protects the goods, is convenient for storage and transportation, but also beautifies the goods and publicizes the goods. Corrugated box belongs to green product, and it does benefit to the environmental protection, does benefit to the handling transportation, and among the prior art, corrugated box self intensity is not high, and the withstand voltage ability is poor, receives exogenic action easily and takes place deformation, and the article that leads to the corrugated box packing takes place to damage, and corrugated box seals through the sticky tape mostly moreover, leads to the corrugated box inconvenient opening.

Disclosure of Invention

In order to make up the defects of the prior art, the invention provides a pressure-resistant corrugated carton. The corrugated case is mainly used for solving the problems that the existing corrugated case is poor in pressure resistance, easy to break and deform in the transportation process and inconvenient to open.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a pressure-resistant corrugated carton which comprises an outer box body, an inner box body, a box cover, a sliding resilience mechanism, a first supporting mechanism, a second supporting mechanism and a third supporting mechanism, wherein the sliding resilience mechanism is arranged on the outer box body; the box cover is connected to the upper end of the outer box body in a sliding mode through the inserting plate; the inner box body is arranged below the box cover, the inner box body is slidably arranged in the outer box body through a sliding rebounding mechanism, and a second supporting mechanism is arranged at the lower end of the inner box body; the second supporting mechanisms are divided into a group, each second supporting mechanism comprises a first metal elastic sheet, a first elastic telescopic rod, a supporting rod, a connecting rod, a first rotating shaft, a sliding rod, an inclined plate and a connecting telescopic rod, and two adjacent second supporting mechanisms are connected through the connecting telescopic rods; the first metal elastic sheet is fixedly connected to the outer lower surface of the inner box body, the first metal elastic sheet is arc-shaped, and a connecting rod is fixedly inserted into the first metal elastic sheet; the connecting rods are used for fixedly connecting each group of second supporting mechanisms, and first elastic telescopic rods are arranged below the connecting rods; the upper end of the first elastic telescopic rod is fixedly connected to the lower surface of the first metal elastic sheet, the lower end of the first metal elastic sheet is fixedly connected to the upper end of the first rotating shaft, and supporting rods are arranged on two sides of the first metal elastic sheet; the upper end of the supporting rod is fixedly connected to the lower surfaces of the two ends of the first metal elastic sheet, and the lower end of the supporting rod is fixedly connected to the first rotating shaft; the lower end of the first rotating shaft is symmetrically and rotatably connected with sliding rods; the lower end of the sliding rod is slidably arranged in the inclined plate; the lower end of the inclined plate is hinged to the inner lower surface of the outer box body; the connecting telescopic rod is hinged on the inclined plates in the two adjacent second supporting mechanisms; when the box cover is extruded, a downward acting force is applied to the inner box body, when the inner box body moves downwards due to a downward pressure, the first elastic telescopic rod is pushed to compress downwards, namely the middle part of the first metal elastic sheet moves downwards, and two ends of the first metal elastic sheet are fixed through the support rods, namely the upper surface of the first metal elastic sheet is gradually attached to the outer surface of the lower end of the inner box body in the process that the inner box body is pressed downwards, meanwhile, the first rotating shaft also moves downwards in the process that the first elastic telescopic rod is pressed, namely the sliding rod is pushed to slide towards two sides on the inclined plate, the sliding rod finally extrudes the inclined plate to be attached to the inner lower surface of the outer box body along with the increasing extrusion force, and because the two adjacent second supporting mechanisms are connected through the connecting telescopic rods, when any one of the two supporting mechanisms is extruded, the whole group of the second supporting mechanisms can be driven to move downwards together, and because each group of the second supporting mechanisms are connected through, the event can drive all second supporting mechanism downstream when any a set of second supporting mechanism downstream, first metal shrapnel can form a whole face at the lower part surface of interior box when receiving certain pressure promptly, the swash plate can form a whole face at the inside lower surface of outer box, can make interior box form a holding surface respectively in its inside with outer box when receiving pressure through setting up second supporting mechanism, improve the lifting surface area of interior box bottom surface and the interior ground of outer box through the holding surface, improve the pressure-resistant capacity of interior box, form the protection simultaneously to the bottom surface of interior box and outer box, improve its structural strength, avoid taking place to damage because of the too big interior box of atress.

The third supporting mechanism comprises a supporting frame body, a trapezoidal block, a supporting rod, a positioning rod, a first air bag, a second air bag, an arc-shaped block and an air pipe; the supporting frame body is fixedly arranged in a cavity between the inner box body and the outer box body, and trapezoidal blocks are symmetrically and fixedly arranged on the inner wall of the supporting frame body; sliding grooves are formed in two sides of the interior of the trapezoidal block; the upper end of the sliding chute extends into the supporting frame body, and a positioning rod is arranged in the sliding chute in a sliding manner; the inner ends of the positioning rods are fixedly arranged on the outer surfaces of different arc-shaped blocks, and two adjacent positioning rods are elastically connected through a spring; the number of the arc-shaped blocks is eight, every four arc-shaped blocks can be encircled into a circle, the four arc-shaped blocks at the inner ends are connected through supporting rods, and a second air bag is arranged on the inner side of each arc-shaped block; two ends of the supporting rod are slidably arranged in the arc-shaped block; the lower end of the second air bag is fixedly connected with an air pipe; the air pipe is fixedly arranged in the wall of the outer box body, and the upper end of the middle part of the air pipe is fixedly connected with the first air bag; the first air bag is fixedly arranged below the inclined plate in the second supporting mechanism; in the process that the inclined plate is pressed close to the lower surface of the inner part of the outer box body, the inclined plate gradually contacts with the first air bag and generates extrusion force on the first air bag, when the first air bag is extruded, the air in the first air bag is conveyed into the air pipe, then the air pipe conveys the air in the first air bag into the second air bag to increase the air pressure in the second air bag, the second air bag expands outwards under the action of the air pressure, namely the arc-shaped block is extruded outwards, in the process that the arc-shaped block is extruded outwards, the positioning rod slides outwards along the inner side of the sliding groove under the separating action of the arc-shaped block and finally slides into the sliding groove in the supporting frame along with the increasing of the expansion force of the second air bag, a supporting force is formed on the supporting frame body, the supporting frame body is fully protected from being damaged, and meanwhile, in the process that the arc-shaped block is extruded outwards, the supporting rod on the inner, can make interior box can extrude the air in the first gasbag to the second gasbag when being extruded through setting up first gasbag and second gasbag, thereby make the arc piece outwards expand by the extrusion, set up the locating lever simultaneously and can make the arc piece form an extrusion force to the braced frame body through the locating lever in the expansion, ensure that braced frame body can not take place deformation, strengthen the structural strength of outer box, and can ensure to connect closely between the arc piece through setting up the bracing piece, strengthen third supporting mechanism's overall structure intensity, play a abundant supporting role to outer box, can indirectly strengthen the compressive capacity of outer box when interior box receives the extrusion force, avoid outer box emergence deformation when interior box receives the extrusion force.

The sliding rebounding mechanism comprises a rebounding frame, a first sliding block and a sliding rod; the number of the elastic frames is four, the outmost elastic frame is fixedly arranged on the inner wall of the outer box body, every two adjacent elastic frames are adjacent, and a first sliding block is connected in the elastic frames in a sliding mode through springs; a sliding rod is fixedly arranged at the outer end of the first sliding block; the other end of each sliding rod is fixedly arranged on the outer surface of the adjacent elastic frame, and the innermost sliding rod is fixedly arranged on the outer wall of the inner box body; a rubber frame is arranged above the sliding resilience mechanism; the rubber frame is fixedly arranged on the inner side surface of the box cover, the inner end of the rubber frame is in sliding friction connection with the inner box body, and a first supporting mechanism is arranged on the inner side of the rubber frame; the first supporting mechanism comprises a mounting plate, a first connecting rod, a second connecting rod, a hinge seat and a second elastic telescopic rod; the two mounting plates are arranged, and the inner surfaces of the mounting plates are symmetrically provided with hinge seats; the hinge seats are provided with a plurality of hinge seats, the inner ends of the hinge seats are slidably arranged in the mounting plate, every four hinge seats are arranged into a group, and a first connecting rod and a second connecting rod are arranged on each group of hinge seats in a crossed manner; the middle part of the first connecting rod is rotatably connected with the middle part of the second connecting rod, and the first connecting rod is connected with the second connecting rod through a second elastic telescopic rod; when the box cover is subjected to extrusion force, namely the upper mounting plate approaches to the lower mounting plate, and the lower mounting plate is clamped with the inner box body immovably, so that extrusion force is generated on the first connecting rod and the second connecting rod, and the first connecting rod and the second connecting rod are rotatably connected, so that two ends of the first connecting rod and the second connecting rod approach to each other, namely, the hinge seat is pushed to slide towards the outer end, and meanwhile, extrusion force is given to the second elastic telescopic rod to promote the second elastic telescopic rod to contract, when the pressure is continuously increased, the second elastic telescopic rod cannot be continuously contracted and can push the sliding rod to move downwards, namely, the first sliding block at the end part of the sliding rod is driven to slide downwards in the elastic frame, when the first sliding block at the innermost end cannot be continuously slid, the elastic frame at the innermost end under the action of the pressure continuously moves downwards under the action of the elasticity of the sliding rod at the outer end, and finally, the elastic frame is in a staircase-shaped arrangement, and the, avoid pressure too big to cause the damage to the case lid, elastic force between box and the case lid in can further improving through setting up slip resilience mechanism and mutually supporting with first supporting mechanism simultaneously, form a holistic protection to case lid and interior box, further improve the compressive capacity of flute case, can ensure the interior box of interior box through setting up the rubber frame simultaneously and be the enclosure space, can effectively improve the sealed effect of interior box, can also increase the frictional force between case lid and the interior box, improve the installation stability of case lid.

The outer surface of the second air bag is provided with an elastic net; the inner end of the elastic net is fixedly arranged on the rear surface of the arc-shaped block; when the air in the first air bag is extruded into the second air bag through the air pipe, the second air bag can expand and increase under the action of air pressure, and at the moment, the elastic net can generate a restraining force on the second air bag in the expansion process of the second air bag, so that the second air bag only can generate extrusion force on the arc-shaped block and can not extrude the inner box body, the expansion direction of the second air bag can be changed by arranging the elastic net, the second air bag is prevented from expanding towards the inner box body to damage the inner box body, simultaneously, the expansion range of the arc-shaped block can be maximized, the supporting force of the positioning rod to the supporting frame body is improved, the structural strength of outer box of maximize promptly can make the all-round parcel second gasbag of elasticity net simultaneously through the rear surface with the inner fixed mounting of elasticity net at the arc piece, avoids the second gasbag to receive the frictional action of arc piece at the in-process of inflation and reduces its life.

A bending mechanism is arranged inside the upper end of the positioning rod; the bending mechanism comprises a connecting block, a second rotating shaft, a second metal elastic sheet and a third metal elastic sheet; the second rotating shaft is rotatably arranged in the positioning rod, and second metal elastic pieces are arranged at two ends of the second rotating shaft; the second metal elastic pieces are symmetrically and fixedly arranged at two ends of the upper surface of the connecting block, and the outer surface of the second metal elastic piece is connected with a third metal elastic piece in a sliding friction mode; the upper ends of the third metal elastic sheets are symmetrically and fixedly arranged at two ends of the lower surface of the connecting block; when the locating lever just slides into the spout in the carriage, because of the bending force influence that receives the spout, can lead to the connecting block in the locating lever top bending mechanism to be crooked around the second pivot, the second metal shrapnel and the third metal shrapnel in the outside can be close to each other and produce frictional motion promptly, and inboard second metal shrapnel and third metal shrapnel then can stretch each other, finally make bending mechanism become the arc because of the effect of extrusion force, can make to form the arc of incurving between the connecting block through setting up the second pivot, increase the area of contact between locating lever and the carriage promptly, effectively improve the locating lever to carriage's support dynamics, improve carriage's compressive capacity promptly by a wide margin, and can avoid second metal shrapnel and spout to form frictional force through setting up third metal shrapnel in the outer end of second metal shrapnel, thereby avoid bending mechanism to produce the residue because of frictional force when gliding and get into influence the bending machine in the second pivot The bending effect of the structure further improves the stability of the whole working process and ensures the compression-resistant effect in the working process.

A pressure groove is formed in the second metal elastic sheet; the pressure groove is of a closed structure, and a second sliding block is arranged in the pressure groove in a sliding mode; the second sliding block is fixedly connected to the inner surface of the third metal elastic sheet; when the bending mechanism is bent, the second metal elastic sheet and the third metal elastic sheet can slide relatively, because the pressure groove is arranged in the second metal elastic sheet and is of a closed structure, and the inner side of the third metal elastic sheet is fixedly connected with the second sliding block, namely, the second sliding block moves towards the end part of the second metal elastic sheet when the bending mechanism bends, namely, the air pressure in the pressure groove is increased, a reverse acting force is formed on the second sliding block, namely, a reverse acting force is formed on the third metal elastic sheet, a protective force is formed between the second metal elastic sheet and the third metal elastic sheet when the bending mechanism is bent by arranging the pressure groove and the second sliding block, meanwhile, the bending force of the bending mechanism can be controlled, the connection strength between the connecting blocks is enhanced, and the connecting blocks are prevented from being bent randomly and cannot play a good supporting role.

The invention has the following beneficial effects:

1. the inner box body and the outer box body can respectively form a supporting surface when the inner box body is stressed by the second supporting mechanism, the stress areas of the bottom surface of the inner box body and the ground in the outer box body are increased through the supporting surfaces, the pressure resistance of the inner box body is improved, meanwhile, the bottom surfaces of the inner box body and the outer box body are protected, the structural strength of the inner box body and the outer box body is improved, and the inner box body is prevented from being damaged due to too large stress.

2. The first air bag and the second air bag are arranged, so that air in the first air bag can be extruded to the second air bag when the inner box body is extruded, the arc-shaped blocks are extruded and outwards expanded, meanwhile, the positioning rod is arranged, the arc-shaped blocks can form extrusion force on the supporting frame body through the positioning rod when the arc-shaped blocks are expanded, the supporting frame body is ensured not to deform, the structural strength of the outer box body is enhanced, the supporting rods are arranged, the arc-shaped blocks can be tightly connected, the overall structural strength of the third supporting mechanism is enhanced, a sufficient supporting effect is achieved on the outer box body, the pressure resistance of the outer box body can be indirectly enhanced when the inner box body is subjected to extrusion force, and the outer box body is prevented from deforming when the inner box body is subjected to extrusion force.

3. The invention can enhance the supporting area of the middle part of the box cover when the box cover is under pressure by arranging the first supporting mechanism, avoids the damage to the box cover caused by overlarge pressure, can further improve the elastic acting force between the inner box body and the box cover by arranging the sliding springback mechanism and mutually matching with the first supporting mechanism, forms an integral protection for the box cover and the inner box body, further improves the pressure resistance of the corrugated box, can ensure that the inner box body is a closed space by arranging the rubber frame, can effectively improve the sealing effect of the inner box body, can also increase the friction force between the box cover and the inner box body, and improves the installation stability of the box cover.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a schematic structural view of the third support mechanism of the present invention;

FIG. 3 is a schematic view of the installation of the elastic net of the present invention;

FIG. 4 is an enlarged view of a portion of the invention at A in FIG. 1;

FIG. 5 is an enlarged view of a portion of the invention at B in FIG. 1;

FIG. 6 is an enlarged view of a portion of the invention at C in FIG. 1;

FIG. 7 is an enlarged view of a portion of the invention at D in FIG. 2;

FIG. 8 is an enlarged fragmentary view at E of FIG. 7 in accordance with the present invention;

in the figure: the outer box body 1, the inner box body 2, the box cover 3, the inserting plate 31, the rubber frame 32, the sliding rebounding mechanism 4, the elastic frame 41, the first slider 42, the sliding rod 43, the first supporting mechanism 5, the mounting plate 51, the first connecting rod 52, the second connecting rod 53, the hinged seat 54, the second elastic telescopic rod 55, the second supporting mechanism 6, the first metal elastic sheet 61, the first elastic telescopic rod 62, the supporting rod 63, the connecting rod 64, the first rotating shaft 65, the sliding rod 66, the inclined plate 67, the connecting telescopic rod 68, the third supporting mechanism 7, the supporting frame body 71, the trapezoidal block 72, the sliding chute 721, the supporting rod 73, the positioning rod 74, the first air bag 75, the second air bag 76, the elastic net 761, the arc block 77, the air pipe 78, the bending mechanism 8, the connecting block 81, the second rotating shaft 82, the second metal elastic sheet 83, the pressure groove 831, the second slider 832 and the third metal elastic.

Detailed Description

A pressure-resistant corrugated cardboard box according to an embodiment of the present invention will be described below with reference to fig. 1 to 8.

As shown in fig. 1 to 8, the pressure-resistant corrugated carton according to the present invention includes an outer box 1, an inner box 2, a box cover 3, a sliding resilient mechanism 4, a first support mechanism 5, a second support mechanism 6, and a third support mechanism 7; the box cover 3 is connected to the upper end of the outer box body 1 in a sliding mode through an inserting plate 31; the inner box body 2 is arranged below the box cover 3, the inner box body 2 is slidably arranged in the outer box body 1 through a sliding rebounding mechanism 4, and a second supporting mechanism 6 is arranged at the lower end of the inner box body 2; the seven second supporting mechanisms 6 form a group, each second supporting mechanism 6 comprises a first metal elastic sheet 61, a first elastic telescopic rod 62, a supporting rod 63, a connecting rod 64, a first rotating shaft 65, a sliding rod 66, an inclined plate 67 and a connecting telescopic rod 68, and two adjacent second supporting mechanisms 6 are connected through the connecting telescopic rod 68; the first metal elastic sheet 61 is fixedly connected to the outer lower surface of the inner box body 2, the first metal elastic sheet 61 is arc-shaped, and a connecting rod 64 is fixedly inserted into the first metal elastic sheet 61; the connecting rods 64 are used for fixedly connecting each group of second supporting mechanisms 6, and a first elastic telescopic rod 62 is arranged below each connecting rod 64; the upper end of the first elastic expansion link 62 is fixedly connected to the lower surface of the first metal elastic sheet 61, the lower end of the first metal elastic sheet 61 is fixedly connected to the upper end of the first rotating shaft 65, and the two sides of the first metal elastic sheet 61 are provided with supporting rods 63; the upper end of the supporting rod 63 is fixedly connected to the lower surfaces of the two ends of the first metal elastic sheet 61, and the lower end of the supporting rod 63 is fixedly connected to the first rotating shaft 65; the lower end of the first rotating shaft 65 is symmetrically and rotatably connected with sliding rods 66; the lower end of the sliding rod 66 is slidably arranged in the sloping plate 67; the lower end of the sloping plate 67 is hinged on the inner lower surface of the outer box body 1; the connecting telescopic rod 68 is hinged on the inclined plates 67 in two adjacent second supporting mechanisms 6; when the box cover 3 is subjected to extrusion force, a downward acting force is applied to the inner box body 2, when the inner box body 2 moves downward due to downward pressure, the first elastic expansion link 62 is pushed to compress downward, namely the middle part of the first metal elastic sheet 61 moves downward, and two ends of the first metal elastic sheet 61 are fixed through the support rods 63, namely the upper surface of the first metal elastic sheet 61 is gradually attached to the outer surface of the lower end of the inner box body 2 in the process that the inner box body 2 is pressed downward, meanwhile, the first rotating shaft 65 also moves downward in the process that the first elastic expansion link 62 is pressed downward, namely the sliding rod 66 is pushed to slide towards two sides on the inclined plate 67, along with the increasing extrusion force, the sliding rod 66 finally extrudes the inclined plate 67 to be attached to the inner lower surface of the outer box body 1, and because the two adjacent second support mechanisms 6 are connected through the connection expansion link 68, when any one of the two support mechanisms is extruded, the whole group of the second support mechanisms 6 are driven to move, because each group of second supporting mechanisms 6 are connected through the connecting rod 64, when any group of second supporting mechanisms 6 moves downwards, all the second supporting mechanisms 6 can be driven to move downwards, namely when a certain pressure is applied, the first metal elastic sheet 61 can form a whole surface on the outer surface of the lower part of the inner box body 2, the inclined plate 67 can form a whole surface on the inner lower surface of the outer box body 1, the inner box body 2 and the inner part of the outer box body 1 can respectively form a supporting surface when the inner box body 2 is applied with the pressure through the arrangement of the second supporting mechanisms 6, the stress areas of the bottom surface of the inner box body 2 and the ground surface in the outer box body 1 are improved through the supporting surfaces, the pressure resistance of the inner box body 2 is improved, meanwhile, the bottom surfaces of the inner box body 2 and the outer box body 1 are protected, the structural strength of the inner box body 2 is improved, and.

The third supporting mechanism 7 comprises a supporting frame body 71, a trapezoidal block 72, a supporting rod 73, a positioning rod 74, a first air bag 75, a second air bag 76, an arc-shaped block 77 and an air pipe 78; the supporting frame body 71 is fixedly arranged in a cavity between the inner box body 2 and the outer box body 1, and trapezoidal blocks 72 are symmetrically and fixedly arranged on the inner wall of the supporting frame body 71; the two sides inside the trapezoidal block 72 are provided with chutes 721; the upper end of the sliding chute 721 extends into the supporting frame 71, and a positioning rod 74 is slidably mounted in the sliding chute 721; the inner ends of the positioning rods 74 are fixedly arranged on the outer surfaces of different arc-shaped blocks 77, and two adjacent positioning rods 74 are elastically connected through a spring; eight arc-shaped blocks 77 are arranged, every four arc-shaped blocks 77 can be encircled into a circle, the four arc-shaped blocks 77 at the inner ends are connected through supporting rods 73, and a second air bag 76 is arranged on the inner side of each arc-shaped block 77; the two ends of the support rod 73 are slidably arranged in the arc-shaped blocks 77; an air pipe 78 is fixedly connected to the lower end of the second air bag 76; the air pipe 78 is fixedly arranged in the wall of the outer box body 1, and the upper end of the middle part of the air pipe 78 is fixedly connected with a first air bag 75; the first air bag 75 is fixedly arranged below the inclined plate 67 in the second supporting mechanism 6; when the sloping plate 67 approaches the inner lower surface of the outer case 1, the sloping plate 67 gradually contacts the first air bag 75 and generates a pressing force on the first air bag 75, when the first air bag 75 is pressed, the air in the first air bag 75 is conveyed into the air pipe 78, then the air pipe 78 conveys the air in the first air bag 76 to increase the air pressure in the second air bag 76, the second air bag 76 expands outward under the action of the air pressure, that is, the arc-shaped block 77 is pressed outward, in the process that the arc-shaped block 77 is pressed outward, the positioning rod 74 slides along the sliding slot 721 inward and outward under the separating action of the arc-shaped block 77, and finally slides into the sliding slot 721 in the supporting frame 71 as the expansion force of the second air bag 76 increases, so as to form a supporting force on the supporting frame 71, and fully protect the supporting frame 71 from being damaged, and in the process that the arc-shaped block 77 is pressed outward, the supporting rod 73 inside the arc-shaped block 77 slides along the sliding slot 721 in the arc-shaped block 77, can make interior box 2 can extrude the air in first gasbag 75 to second gasbag 76 when being extruded through setting up first gasbag 75 and second gasbag 76, thereby make arc piece 77 outwards expand by the extrusion, set up locating lever 74 simultaneously and can make arc piece 77 form an extrusion force to braced frame 71 through locating lever 74 when the expansion, ensure that braced frame 71 can not take place the deformation, strengthen the structural strength of outer box 1, and can ensure to connect closely between the arc piece 77 through setting up bracing piece 73, strengthen the overall structure intensity of third supporting mechanism 7, play a abundant supporting role to outer box 1, can indirectly strengthen the pressure-resistant ability of outer box 1 when interior box 2 receives the extrusion force, avoid outer box 1 to take place the deformation when interior box 2 receives the extrusion force.

The sliding rebounding mechanism 4 comprises a rebounding frame 41, a first slide block 42 and a slide rod 43; the number of the elastic frames 41 is four, the outmost elastic frame 41 is fixedly arranged on the inner wall of the outer box body 1, every two adjacent elastic frames 41 are adjacent, and a first sliding block 42 is connected in the elastic frames 41 in a sliding mode through springs; a sliding rod 43 is fixedly arranged at the outer end of the first sliding block 42; the other end of the sliding rod 43 is fixedly arranged on the outer surface of the adjacent elastic frame 41, and the innermost sliding rod 43 is fixedly arranged on the outer wall of the inner box body 2; a rubber frame 32 is arranged above the sliding resilience mechanism 4; the rubber frame 32 is fixedly arranged on the inner side surface of the box cover 3, the inner end of the rubber frame 32 is in sliding friction connection with the inner box body 2, and the inner side of the rubber frame 32 is provided with a first supporting mechanism 5; the first supporting mechanism 5 comprises a mounting plate 51, a first connecting rod 52, a second connecting rod 53, a hinged seat 54 and a second elastic telescopic rod 55; the number of the mounting plates 51 is two, and the inner surfaces of the mounting plates 51 are symmetrically provided with hinge seats 54; the number of the hinge seats 54 is multiple, the inner ends of the hinge seats 54 are slidably mounted in the mounting plate 51, every four hinge seats 54 are arranged into a group, and a first connecting rod 52 and a second connecting rod 53 are crosswise arranged on each group of hinge seats 54; the middle part of the first connecting rod 52 is rotatably connected with the middle part of the second connecting rod 53, and the first connecting rod 52 is connected with the second connecting rod 64 through the second elastic telescopic rod 55; when the box cover 3 is subject to extrusion force, namely the upper mounting plate 51 approaches the lower mounting plate 51, and the lower mounting plate 51 is not clamped with the inner box 2, an extrusion force is generated on the first connecting rod 52 and the second connecting rod 53, and because the first connecting rod 52 is rotatably connected with the second connecting rod 53, two ends of the first connecting rod 52 and the second connecting rod 53 approach each other, namely the hinge seat 54 is pushed to slide towards the outer end, and simultaneously an extrusion force is applied to the second elastic expansion rod 55 to promote the contraction of the hinge seat, when the pressure is continuously increased, the second elastic expansion rod 55 cannot be continuously contracted, the sliding rod 43 is pushed to move downwards, namely the first sliding block 42 at the end part of the sliding rod 43 is driven to slide downwards in the elastic frame 41, when the first sliding block 42 at the innermost end cannot be continuously slid, the elastic frame 41 at the innermost end under the action of the pressure continues to move downwards under the action of the elastic rod 43 at the outer end, and finally the elastic frame 41 forms a, can make case lid 3 strengthen the supporting area in its middle part when receiving pressure through setting up first supporting mechanism 5, avoid pressure too big to cause the damage to case lid 3, elastic force between box 2 and case lid 3 in can further improving through setting up slip resilient means 4 and mutually supporting with first supporting mechanism 5 simultaneously, form a holistic protection to case lid 3 and interior box 2, further improve the compressive capacity of flute case, can ensure the interior box of inner box for the enclosure space through setting up rubber frame 32 simultaneously, can effectively improve the sealed effect of interior box, can also increase the frictional force between case lid and the interior box, improve the installation stability of case lid.

An elastic net 761 is arranged on the outer surface of the second air bag 76; the inner end of the elastic net 761 is fixedly arranged on the rear surface of the arc-shaped block 77; when the air in the first air bag 75 is extruded into the second air bag 76 through the air pipe 78, the second air bag 76 will expand and increase under the action of the air pressure, and at the moment, the elastic net 761 will generate a restraining force on the second air bag 76 in the process of expanding the second air bag 76, so that the second air bag 76 only can generate extrusion force on the arc-shaped block 77 and can not generate extrusion effect on the inner box body 2, the expansion direction of the second air bag 76 can be changed by arranging the elastic net 761, the second air bag 76 is prevented from expanding towards the inner box body 2 to damage the inner box body 2, meanwhile, the expansion range of the arc-shaped block 77 can be maximized, the supporting force of the positioning rod 74 to the supporting frame body 71 is improved, the structural strength of the outer box body 1 is maximized, and meanwhile, the elastic net 761 can be wrapped in the second air bag 76 in an all-dimensional mode through the inner end of the elastic net 761 being fixedly mounted on the rear surface of the arc-shaped block 77, so that the second air bag 76 is prevented from being reduced in service life due to the friction effect of the arc-shaped block 77 in the expansion process.

A bending mechanism 8 is arranged inside the upper end of the positioning rod 74; the bending mechanism 8 comprises a connecting block 81, a second rotating shaft 82, a second metal elastic sheet 83 and a third metal elastic sheet 84; the second rotating shaft 82 is rotatably installed in the positioning rod 74, and second metal elastic sheets 83 are arranged at two ends of the second rotating shaft 82; the second metal elastic sheets 83 are symmetrically and fixedly arranged at two ends of the upper surface of the connecting block 81, and the outer surface of the second metal elastic sheets 83 is connected with third metal elastic sheets 84 in a sliding friction manner; the upper ends of the third metal elastic sheets 84 are symmetrically and fixedly arranged at two ends of the lower surface of the connecting block 81; when the positioning rod 74 just slides into the sliding slot 721 in the supporting frame 71, due to the influence of the bending force of the sliding slot 721, the connecting block 81 in the bending mechanism 8 at the top end of the positioning rod 74 is bent outward around the second rotating shaft 82, that is, the outer second metal elastic sheet 83 and the outer third metal elastic sheet 84 approach each other and generate friction motion, while the inner second metal elastic sheet 83 and the inner third metal elastic sheet 84 stretch each other, finally the bending mechanism 8 becomes arc-shaped due to the action of the squeezing force, the connecting block 81 can form an outward-bent arc-shape by disposing the second rotating shaft 82, that is, the contact area between the positioning rod 74 and the supporting frame 71 is increased, the supporting force of the positioning rod 74 to the supporting frame 71 is effectively increased, that is, the pressure resistance of the supporting frame 71 is greatly increased, and the friction force between the second metal elastic sheet 83 and the sliding slot 721 can be avoided by disposing the third metal elastic sheet 84 at the outer end of the second metal elastic sheet 83, thereby avoid crooked mechanism 8 when gliding because of the scraping of frictional force produces the residue and gets into in the crooked effect of crooked mechanism 8 in second pivot 82, further improve the stability of whole during operation, guarantee the resistance to compression effect in the course of the work.

A pressure groove 831 is formed in the second metal elastic sheet 83; the pressure groove 831 is arranged as a closed structure, and a second sliding block 832 is arranged in the pressure groove 831 in a sliding mode; the second sliding block 832 is fixedly connected to the inner surface of the third metal dome 84; when the bending mechanism 8 bends, that is, the second metal elastic sheet 83 and the third metal elastic sheet 84 slide relatively, because the second metal elastic sheet 83 is provided with the pressure groove 831, and the pressure groove 831 is a sealed structure, and the inner side of the third metal elastic sheet 84 is fixedly connected with the second sliding block 832, that is, the second slider 832 moves toward the end of the second metal spring piece 83 when the bending mechanism 8 bends, i.e., the air pressure in the pressure groove 831 will increase, an opposite force is applied to the second slider 832, namely, an opposite acting force is formed on the third metal elastic sheet 84, a protection force is formed between the second metal elastic sheet 83 and the third metal elastic sheet 84 when the bending mechanism 8 is bent by arranging the pressure groove 831 and the second slider 832, meanwhile, the bending strength of the bending mechanism 8 can be controlled, the connection strength between the connecting blocks 81 is enhanced, and the connecting blocks 81 are prevented from being bent randomly and cannot play a good supporting role.

The specific working process is as follows:

when the box cover 3 works, when the box cover 3 is subjected to extrusion force, namely the upper mounting plate 51 is close to the lower mounting plate 51, and the lower mounting plate 51 is fixedly clamped with the inner box body 2, an extrusion force is generated on the first connecting rod 52 and the second connecting rod 53, and because the first connecting rod 52 is rotatably connected with the second connecting rod 53, two ends of the first connecting rod 52 and the second connecting rod 53 are close to each other, namely the hinge seat 54 is pushed to slide towards the outer end, and simultaneously an extrusion force is applied on the second elastic expansion rod 55 to promote the contraction of the second elastic expansion rod 55, when the pressure is continuously increased, the second elastic expansion rod 55 cannot be continuously contracted, the sliding rod 43 is pushed to move downwards, namely the first sliding block 42 at the end part of the sliding rod 43 is driven to slide downwards in the elastic frame 41, and when the first sliding block 42 at the innermost end part cannot be continuously slid, the elastic frame 41 at the innermost end part under the action of the, finally, the elastic frame 41 is arranged like a staircase, a downward acting force is applied to the inner box body 2 when the box cover 3 is subjected to an extrusion force, when the inner box body 2 moves downward due to a downward pressure, the first elastic telescopic rod 62 is pushed to be compressed downward, namely, the middle part of the first metal elastic sheet 61 moves downward, and two ends of the first metal elastic sheet 61 are fixed through the supporting rods 63, namely, the upper surface of the first metal elastic sheet 61 is gradually attached to the outer surface of the lower end of the inner box body 2 in the process of pressing the inner box body 2 downward, meanwhile, the first rotating shaft 65 also moves downward in the process of pressing the first elastic telescopic rod 62, namely, the sliding rod 66 is pushed to slide towards two sides on the inclined plate 67, along with the increasing extrusion force, the sliding rod 66 finally extrudes the inclined plate 67 to be attached to the inner lower surface of the outer box body 1, and because the two adjacent second supporting mechanisms 6 are connected through the connecting telescopic rod 68, therefore, when any one of the two support mechanisms is pressed, the whole set of the second support mechanisms 6 is driven to move downwards, and because each set of the second support mechanisms 6 is connected through the connecting rod 64, when any one set of the second support mechanisms 6 moves downwards, all the second support mechanisms 6 are driven to move downwards, namely, when a certain pressure is applied, the first metal elastic sheet 61 forms a whole surface on the outer surface of the lower part of the inner box body 2, the inclined plate 67 forms a whole surface on the inner lower surface of the outer box body 1, and when the inclined plate 67 approaches the inner lower surface of the outer box body 1, the inclined plate gradually contacts the first air bag 75 and generates a pressing force on the first air bag 75, when the first air bag 75 is pressed, the air in the first air bag is conveyed into the air pipe 78, then the air pipe 78 conveys the air in the second air bag 76 to increase the air pressure in the second air bag 76, at this time, the elastic net 761 generates a restraining force on the second air bag 76 in the expansion process, the second air bag 76 only generates extrusion force to the arc block 77, and will not cause extrusion to the inner box body 2, when the second air bag 76 is expanded outward under the action of air pressure, that is, the arc block 77 is extruded outward, in the process that the arc block 77 is extruded outward, the positioning rod 74 slides along the sliding slot 721 to the outside under the separation action of the arc block 77, and finally slides into the sliding slot 721 in the supporting frame 71 as the expansion force of the second air bag 76 increases, and forms a supporting force to the supporting frame 71, so as to fully protect the supporting frame 71 from being damaged, and meanwhile, when the positioning rod 74 just slides into the sliding slot 721 in the supporting frame 71, due to the influence of the bending force of the sliding slot 721, the connecting block 81 in the bending mechanism 8 at the top end of the positioning rod 74 is bent outward around the second rotating shaft 82, that the second metal elastic sheet 83 and the third metal elastic sheet 84 at the outer side are close to each other and generate friction movement, the inner second metal elastic sheet 83 and the inner third metal elastic sheet 84 are stretched with each other, and finally the bending mechanism 8 is changed into an arc shape due to the action of the squeezing force, when the bending mechanism 8 is bent, i.e. the second metal elastic sheet 83 and the inner third metal elastic sheet 84 slide relatively, and because the second metal elastic sheet 83 is provided with the pressure groove 831, the pressure groove 831 is a closed structure, and meanwhile, the inner side of the third metal elastic sheet 84 is fixedly connected with the second slider 832, i.e. when the bending mechanism 8 is bent, the second slider 832 moves toward the end of the second metal elastic sheet 83, i.e. the air pressure in the pressure groove 831 is increased, a reverse acting force is formed on the second slider 832, i.e. a reverse acting force is formed on the third metal elastic sheet 84, thereby protecting the stability of the whole structure during operation.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A pressure-resistant corrugated carton comprises an outer box body (1), an inner box body (2), a box cover (3), a sliding resilience mechanism (4), a first supporting mechanism (5), a second supporting mechanism (6) and a third supporting mechanism (7); the method is characterized in that: the box cover (3) is connected to the upper end of the outer box body (1) in a sliding mode through an inserting plate (31); the inner box body (2) is arranged below the box cover (3), the inner box body (2) is slidably arranged in the outer box body (1) through a sliding rebounding mechanism (4), and a second supporting mechanism (6) is arranged at the lower end of the inner box body (2); the seven second supporting mechanisms (6) are in a group, each second supporting mechanism (6) comprises a first metal elastic sheet (61), a first elastic telescopic rod (62), a supporting rod (63), a connecting rod (64), a first rotating shaft (65), a sliding rod (66), an inclined plate (67) and a connecting telescopic rod (68), and two adjacent second supporting mechanisms (6) are connected through the connecting telescopic rods (68); the first metal elastic sheet (61) is fixedly connected to the outer lower surface of the inner box body (2), the first metal elastic sheet (61) is arc-shaped, and a connecting rod (64) is fixedly inserted into the first metal elastic sheet (61); the connecting rods (64) are used for fixedly connecting each group of second supporting mechanisms (6), and first elastic telescopic rods (62) are arranged below the connecting rods (64); the upper end of the first elastic telescopic rod (62) is fixedly connected to the lower surface of the first metal elastic sheet (61), the lower end of the first metal elastic sheet (61) is fixedly connected to the upper end of the first rotating shaft (65), and supporting rods (63) are arranged on two sides of the first metal elastic sheet (61); the upper end of the supporting rod (63) is fixedly connected to the lower surfaces of the two ends of the first metal elastic sheet (61), and the lower end of the supporting rod (63) is fixedly connected to the first rotating shaft (65); the lower end of the first rotating shaft (65) is symmetrically and rotatably connected with sliding rods (66); the lower end of the sliding rod (66) is slidably arranged in the inclined plate (67); the lower end of the inclined plate (67) is hinged to the inner lower surface of the outer box body (1); the connecting telescopic rod (68) is hinged on the inclined plates (67) in the two adjacent second supporting mechanisms (6).

2. A pressure-resistant corrugated carton as set forth in claim 1, wherein: the third supporting mechanism (7) comprises a supporting frame body (71), a trapezoidal block (72), a supporting rod (73), a positioning rod (74), a first air bag (75), a second air bag (76), an arc-shaped block (77) and an air pipe (78); the supporting frame body (71) is fixedly arranged in a cavity between the inner box body (2) and the outer box body (1), and trapezoidal blocks (72) are symmetrically and fixedly arranged on the inner wall of the supporting frame body (71); sliding grooves (721) are formed in two sides of the interior of the trapezoidal block (72); the upper end of the sliding chute (721) extends into the supporting frame body (71), and a positioning rod (74) is arranged in the sliding chute (721) in a sliding manner; the inner ends of the positioning rods (74) are fixedly arranged on the outer surfaces of different arc-shaped blocks (77), and two adjacent positioning rods (74) are elastically connected through springs; eight arc-shaped blocks (77) are arranged, each four arc-shaped blocks (77) can be encircled into a circle, the four arc-shaped blocks (77) at the inner ends are connected through supporting rods (73), and second air bags (76) are arranged on the inner sides of the arc-shaped blocks (77); two ends of the supporting rod (73) are slidably arranged in the arc-shaped block (77); the lower end of the second air bag (76) is fixedly connected with an air pipe (78); the air pipe (78) is fixedly arranged in the wall of the outer box body (1), and the upper end of the middle part of the air pipe (78) is fixedly connected with the first air bag (75); the first air bag (75) is fixedly arranged below the inclined plate (67) in the second supporting mechanism (6).

3. A pressure-resistant corrugated carton as set forth in claim 1, wherein: the sliding rebounding mechanism (4) comprises a rebounding frame (41), a first sliding block (42) and a sliding rod (43); the number of the elastic frames (41) is four, the outmost elastic frame (41) is fixedly arranged on the inner wall of the outer box body (1), every two adjacent elastic frames (41) are adjacent, and a first sliding block (42) is connected in the elastic frames (41) in a sliding mode through springs; a sliding rod (43) is fixedly arranged at the outer end of the first sliding block (42); the other end of the sliding rod (43) is fixedly arranged on the outer surface of the adjacent elastic frame (41), and the innermost sliding rod (43) is fixedly arranged on the outer wall of the inner box body (2); a rubber frame (32) is arranged above the sliding resilience mechanism (4); the rubber frame (32) is fixedly arranged on the inner side surface of the box cover (3), the inner end of the rubber frame (32) is in sliding friction connection with the inner box body (2), and a first supporting mechanism (5) is arranged on the inner side of the rubber frame (32); the first supporting mechanism (5) comprises a mounting plate (51), a first connecting rod (52), a second connecting rod (53), a hinged seat (54) and a second elastic telescopic rod (55); the number of the mounting plates (51) is two, and the inner surfaces of the mounting plates (51) are symmetrically provided with hinge seats (54); the number of the hinge seats (54) is multiple, the inner ends of the hinge seats (54) are slidably mounted in the mounting plate (51), every four hinge seats (54) are arranged into a group, and a first connecting rod (52) and a second connecting rod (53) are arranged on each group of hinge seats (54) in a crossed mode; the middle part of the first connecting rod (52) is rotatably connected with the middle part of the second connecting rod (53), and the first connecting rod (52) is connected with the second connecting rod (64) through a second elastic telescopic rod (55).

4. A pressure-resistant corrugated carton as set forth in claim 2, wherein: an elastic net (761) is arranged on the outer surface of the second air bag (76); the inner end of the elastic net (761) is fixedly arranged on the rear surface of the arc-shaped block (77).

5. A pressure-resistant corrugated carton as set forth in claim 2, wherein: a bending mechanism (8) is arranged inside the upper end of the positioning rod (74); the bending mechanism (8) comprises a connecting block (81), a second rotating shaft (82), a second metal elastic sheet (83) and a third metal elastic sheet (84); the second rotating shaft (82) is rotatably arranged in the positioning rod (74), and second metal elastic sheets (83) are arranged at two ends of the second rotating shaft (82); the second metal elastic sheets (83) are symmetrically and fixedly arranged at two ends of the upper surface of the connecting block (81), and the outer surface of the second metal elastic sheets (83) is connected with third metal elastic sheets (84) in a sliding friction mode; the upper ends of the third metal elastic sheets (84) are symmetrically and fixedly arranged at two ends of the lower surface of the connecting block (81).

6. A pressure-resistant corrugated carton as set forth in claim 5, wherein: a pressure groove (831) is formed in the second metal elastic sheet (83); the pressure groove (831) is of a closed structure, and a second sliding block (832) is installed in the pressure groove (831) in a sliding mode; the second sliding block (832) is fixedly connected to the inner surface of the third metal elastic sheet (84).