Recyclable packaging box for cold fresh products

Abstract

This invention relates to the field of packaging boxes for chilled and fresh products, and more particularly to a reusable packaging box for chilled and fresh products. The box includes a box body with raised strips on both sides of the top, a lid rotatably positioned between the raised strips, and grooves on both sides of the bottom. When the boxes are stacked, the raised strips slide into the grooves. A telescopic groove penetrating the grooves is provided at the bottom of the box body, and a serrated block slides elastically within the telescopic groove via a spring. A first toothed bar is located on the inner side of each raised strip; when the boxes are stacked, the serrated block engages with the first toothed bar. Multiple seat strips are distributed in parallel, with the bottom box resting on the surface of the seat strips, and the grooves slide into the seat strips. When the boxes are stacked, the top raised strips and bottom grooves slide into each other, limiting the left and right positions of the boxes. The engagement of the serrated block with the first and second toothed bars limits the front and rear positions of the boxes, making the stacking of the boxes more stable, reducing the risk of damage during logistics, and increasing the reusability of the boxes.

Description

Technical Field

[0001] This invention relates to the field of packaging boxes for chilled and fresh products, and more particularly to a recyclable packaging box for chilled and fresh products. Background Technology

[0002] Cold chain transportation can include road, water, rail, and air transport, or it can be a combination of multiple modes of transport. It achieves rapid and quality-preserving logistics delivery of chilled and fresh products through a constant low-temperature environment. Packaging boxes are important equipment in cold chain transportation and are used for low-temperature storage of chilled and fresh products. Traditionally, foam boxes and cardboard boxes are used as packaging boxes for chilled and fresh products. However, foam boxes and cardboard boxes have poor pressure resistance and tear resistance. Stacked packaging boxes are prone to displacement and damage during transportation, and the reuse rate is low. Summary of the Invention

[0003] The purpose of this invention is to solve the following problems existing in the prior art: Packaging boxes are important equipment for cold chain transportation and are used for low-temperature storage of chilled products. Traditionally, foam boxes and cardboard boxes are used as packaging boxes for chilled products. However, foam boxes and cardboard boxes have poor pressure resistance and tear resistance. Stacked packaging boxes are prone to displacement and damage during transportation, and the reuse rate is low.

[0004] To address the problems existing in the prior art, the present invention provides a recyclable packaging box for chilled fresh products, including a box body, raised strips on both sides of the top of the box body, a box lid rotatably disposed between the raised strips, and grooves on both sides of the bottom of the box body. When the boxes are stacked, the raised strips slide into the grooves.

[0005] The oblique tooth block has a telescopic groove with a through groove at the bottom of the box. The oblique tooth block slides elastically in the telescopic groove by a spring. The inner side of the protruding strip has a first toothed strip. When the boxes are stacked, the oblique tooth block engages with the first toothed strip.

[0006] The seat bar consists of multiple seat bars distributed in parallel. The bottommost housing is placed on the surface of the seat bar, and the bar groove slides and engages with the seat bar. A second toothed bar is provided on the side of the seat bar, and the bottommost helical toothed block engages with the second toothed bar.

[0007] A pull-out assembly is connected to the helical toothed block. The pull-out assembly is used to control the helical toothed block to retract into the telescopic groove and engage or disengage with the first or second rack.

[0008] Preferably, the pull-out assembly includes a handle, and a receiving groove is opened at the bottom of the housing. The handle slides linearly in the receiving groove, and a guide wheel is rotatably installed in the receiving groove. The handle is connected to a steel wire, which passes around the guide wheel and connects to a helical tooth block.

[0009] Preferably, the two side walls of the box have air chamber layers. The bottom of the air chamber layer extends to the surface of the groove through the downwind opening, and the top of the air chamber layer extends to the surface of the convex strip through the upwind opening. When the convex strip is inserted into the groove, the upwind opening is aligned with the downwind opening.

[0010] Preferably, the seat bar has two channels inside, which are connected to the external air conditioning airflow. The upper surface of the seat bar has a slot that runs through the channel. When the box is placed on the surface of the seat bar, the slot is aligned with the bottom downwind vent. The airflow in the channel enters each air chamber layer in sequence through the slot and the downwind vent.

[0011] Preferably, an air passage is formed inside the edge wall of the box, and the air passage runs through the air chamber layers on both sides of the box.

[0012] Preferably, the top of the air chamber layer has a sealing plate that rotates elastically via a torsion spring. The sealing plate abuts against and blocks the upper air vent. The port of the air duct is located below the swing end of the sealing plate. The top of the sealing plate has a protrusion that penetrates the top surface of the protruding strip of the upper air vent. When the chambers are stacked, the upper chamber presses down on the protrusion, causing the sealing plate to swing down, opening the upper air vent, and blocking and sealing the air duct by the sealing plate.

[0013] Preferably, magnets are provided at the free end of the lid and the edge of the box body, and the magnets are aligned and attracted when the lid is closed.

[0014] Compared with related technologies, the recyclable packaging box for chilled products provided by this invention has the following beneficial effects:

[0015] When the boxes of this invention are stacked, the top protrusion and the bottom groove slide and engage to limit the left and right positions of the boxes. The front and rear positions of the boxes are limited by the engagement of the inclined tooth block with the first tooth and the second tooth. This makes the stacking of the boxes more stable, reduces the risk of damage during logistics, and improves the reusability of the boxes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the stacked box structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the top structure of the box body of the present invention;

[0018] Figure 3 This is a schematic diagram of the bottom structure of the box body of the present invention;

[0019] Figure 4 This is a schematic diagram of the sealing plate structure for sealing the upper air vent of the present invention;

[0020] Figure 5 This is a schematic diagram of the sealing plate enclosing the air passage structure of the present invention;

[0021] Figure 6 This is a schematic diagram of the pull-out component structure of the present invention;

[0022] Figure 7 This is a schematic diagram of the seat bar structure of the present invention.

[0023] The following are the labels in the diagram: 1. Box body; 11. Raised bar; 12. Groove; 13. First rack; 14. Air chamber layer; 15. Air passage; 2. Seat bar; 21. Channel; 22. Bar opening; 23. Second rack; 3. Box cover; 31. Magnetic piece; 4. Upper air vent; 5. Lower air vent; 6. Roller; 7. Helical tooth block; 71. Telescopic groove; 72. Receiving groove; 73. Handle; 74. Steel wire; 75. Guide wheel; 8. Sealing plate; 81. Raised piece. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0026] Example 1

[0027] like Figure 1 , Figure 2 , Figure 3 As shown, a recyclable packaging box for chilled products includes a box body 1 made of plastic. The top left and right sides of the box body 1 have raised strips 11. The box cover 3 is rotatably disposed between the raised strips 11. The bottom left and right sides of the box body 1 have grooves 12. The bottom of the box body 1 has a telescopic groove 71. The telescopic groove 71 is perpendicular to the groove 12. The oblique tooth block 7 slides elastically in the telescopic groove 71 by a spring. The inner side of the raised strips 11 has a first toothed strip 13. The first toothed strip 13 and the oblique tooth block 7 are both close to the front end face of the box body 1.

[0028] like Figure 6 As shown, the pull-out assembly includes a handle 73. A receiving groove 72 is opened at the bottom of the housing 1 near the front end. The handle 73 slides back and forth in a straight line in the receiving groove 72. A guide wheel 75 is symmetrically rotated and installed at the rear of the receiving groove 72. The handle 73 is connected to two steel wires 74. The steel wires 74 pass around the guide wheel 75 and are connected to the inclined tooth blocks 7 on both sides in a straight line.

[0029] Multiple rollers 6 are rotatably mounted on the surface of the groove 12;

[0030] like Figure 7 As shown, multiple seat bars 2 are fixedly distributed in parallel inside the transport vehicle, and a second rack 23 is provided on the side of the seat bar 2;

[0031] Fresh products are placed inside the box 1, and the box lid 3 is closed. Magnets 31 are provided on the free end of the box lid 3 and the edge of the box 1. The box lid 3 is fixed to the box 1 by the attraction of the magnets 31. The box 1 is placed on the surface of the seat bar 2. The groove 12 at the bottom of the box 1 slides and engages with the seat bar 2, pushing the box 1 into the interior of the carriage. The inclined tooth block 7 and the first toothed bar 13 are pressed together, allowing the box 1 to move along the seat bar 2 into the carriage. The inclined tooth block 7 and the first toothed bar 13 are engaged in opposite directions, preventing the box 1 from leaving the carriage. After the bottom box 1 is laid in the carriage, the box 1 is stacked. The groove 12 at the bottom of the upper box 1 slides and engages with the protrusion 11 at the top of the lower box 1. The inclined tooth block 7 and the first toothed bar 13 are engaged, locking the stacked box 1. This allows the box 1 to be placed stably in the transport vehicle, reducing the risk of damage during logistics and increasing the reusability of the box 1.

[0032] When unloading, disassemble the box body 1 one by one from the outside to the inside. Hold the handle 73 and pull the box body 1 outward. Through the pulling of the steel wire 74, the helical tooth block 7 retracts into the telescopic groove 71, release the helical tooth block 7 from the first toothed rack 13 or the second toothed rack 23, and smoothly slide the box body 1 outward.

[0033] Example 2

[0034] like Figure 4 , Figure 5 As shown, the two side walls of the box 1 have air chamber layers 14. The bottom of the air chamber layer 14 is connected to the surface of the groove 12 through the downwind port 5, and the top of the air chamber layer 14 is connected to the surface of the convex strip 11 through the upwind port 4.

[0035] like Figure 7 As shown, the seat bar 2 has two channels 21 inside, the channels 21 are connected to the air conditioning circuit of the transport vehicle, and the upper surface of the seat bar 2 has a slot 22 that passes through the channels 21.

[0036] When the boxes 1 are stacked and placed inside the transport vehicle, when the boxes 1 are placed on the surface of the seat strip 2, the strip opening 22 is aligned with the bottom air vent 5. When the protruding strip 11 is inserted into the strip groove 12, the upper air vent 4 is aligned with the lower air vent 5. The airflow of the transport vehicle's air conditioning is introduced into the channel 21. The airflow in the channel 21 enters each air chamber layer 14 in sequence through the strip opening 22 and the lower air vent 5, so as to achieve low-temperature preservation of the chilled products in each box 1.

[0037] Example 3

[0038] like Figure 4 , Figure 5As shown, an air duct 15 is opened in the top edge wall of the rear part of the box 1. The air duct 15 passes through the air chamber layers 14 on both sides of the box 1. The top of the air chamber layer 14 is elastically rotated by a torsion spring and has a sealing plate 8. The sealing plate 8 abuts against and blocks the upper air vent 4. The port of the air duct 15 is located below the swing end of the sealing plate 8. The top of the sealing plate 8 has a protrusion 81, which passes through the upper air vent 4 and protrudes from the top surface of the protruding strip 11. The two channels 21 in each seat strip 2 are respectively connected to the air intake and air exhaust systems of the transport vehicle. The lower air vents 5 on both sides of the bottom box 1 are respectively aligned with the openings 22 of the air intake and air exhaust channels. When the boxes 1 are stacked, the upper box 1 presses down the protrusion 81, causing the sealing plate 8 to swing down and the upper air vent 4 to open. The air vents are blocked and sealed by the sealing plate 8. The topmost box 1 is not pressed down, so that the air chamber layers 14 on both sides of the topmost box 1 are connected by the air passage 15. The upper air vent 4 is sealed by the sealing plate 8. The air inlet and outlet of the transport vehicle are connected to the two channels 21 of the air inlet and outlet of the air conditioning connection strip 2. The air conditioning airflow enters the air chamber layer 14 on one side of the box 1 through the channel 21, the strip opening 22, and the lower air vent 5. The air chamber layers 14 on both sides of the stacked box 1 are not connected. The airflow is conducted upward on one side, and is conducted to the air chamber layer 14 of the topmost box 1. It is then guided into the air chamber layer 14 on the other side through the air passage 15, and then continues to be conducted downward until it is discharged from the channel 21 on the other side, so that the stacked boxes 1 form a continuous cooling air passage.

Claims

1. A reusable packaging box for chilled fresh products, characterized in that, include: Box body (1), the top two sides of the box body (1) have protrusions (11), the box cover (3) is rotatably set between the protrusions (11), the bottom two sides of the box body (1) have grooves (12), when the boxes (1) are stacked, the protrusions (11) slide into the grooves (12); The oblique tooth block (7) has a telescopic groove (71) with a through groove (12) at the bottom of the box body (1). The oblique tooth block (7) slides elastically in the telescopic groove (71) by a spring. The inner side of the protruding strip (11) has a first toothed strip (13). When the boxes (1) are stacked, the oblique tooth block (7) engages with the first toothed strip (13). Seat bar (2), multiple seat bars (2) are distributed in parallel, the bottom box (1) is placed on the surface of seat bar (2), the groove (12) slides and engages the seat bar (2), the side of the seat bar (2) is provided with a second toothed bar (23), and the bottom inclined toothed block (7) engages the second toothed bar (23). The pull-out assembly is connected to the helical tooth block (7). The pull-out assembly is used to control the helical tooth block to retract into the telescopic groove (71) and engage or disengage with the first toothed rack (13) or the second toothed rack (23). The box body (1) has air chambers (14) inside both side walls. The bottom of the air chamber (14) is connected to the surface of the groove (12) through the downwind port (5). The top of the air chamber (14) is connected to the surface of the convex strip (11) through the upwind port (4). When the convex strip (11) is inserted into the groove (12), the upwind port (4) is aligned with the downwind port (5). The seat bar (2) has two channels (21) inside, which are connected to the external air conditioning airflow. The upper surface of the seat bar (2) has a slot (22) that passes through the channel (21). When the box (1) is placed on the surface of the seat bar (2), the slot (22) is aligned with the bottom downwind port (5). The airflow in the channel (21) enters each air chamber layer (14) in sequence through the slot (22) and the downwind port (5). An air passage (15) is opened inside the edge wall of the box (1), and the air passage (15) passes through the air chamber layer (14) on both sides of the box (1). The top of the air chamber layer (14) has a sealing plate (8) that rotates elastically by a torsion spring. The sealing plate (8) presses against the air vent (4) and blocks it. The port of the air passage (15) is located below the swing end of the sealing plate (8). The top of the sealing plate (8) has a protrusion (81). The protrusion (81) passes through the air vent (4) and protrudes from the top surface of the protrusion strip (11). When the boxes (1) are stacked, the upper box (1) presses down the protrusion (81), causing the sealing plate (8) to swing down, the air vent (4) to open, and the air passage (15) to be blocked and closed by the sealing plate (8).

2. The recyclable packaging box for chilled products according to claim 1, characterized in that, The pull-out assembly includes a handle (73), and a receiving groove (72) is opened at the bottom of the box (1). The handle (73) slides linearly in the receiving groove (72). A guide wheel (75) is rotatably installed in the receiving groove (72). A steel wire (74) is connected to the handle (73). The steel wire (74) passes around the guide wheel (75) and connects to the helical tooth block (7).

3. The reusable packaging box for chilled products according to claim 1, characterized in that, Magnets (31) are provided on the free end of the lid (3) and the edge of the box body (1). When the lid (3) is closed, the magnets (31) are aligned and attracted.

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