Stackable carton

Abstract

The utility model discloses a kind of board box of stacking convenience, including supporting plate and the box body enclosed in the four around of supporting plate, the corner position of box body is equipped with right-angle support, side plate is installed between adjacent two right-angle supports;Right-angle support outer side wall top is equipped with the rectangular mounting slot extending towards box body inner cavity, vertically movable positioning lock head is installed in the rectangular mounting slot;Supporting plate lower end side edge is equipped with the lock port corresponding with the position of positioning lock head.The utility model is integrated with the rigid engagement of self-adapting positioning lock head and bottom plate lock port on right-angle support, realizes automatic locking after stacking, effectively prevent the horizontal slip between box, impact resistance, vibration resistance is strong;Stacking process does not need any additional operation, lock down, greatly improve the stacking efficiency, by integrating core locking function on right-angle support of bearing key, force flow path is clear and reasonable, while realizing powerful function, ensure the strength and durability of overall structure.

Description

Technical Field

[0001] This utility model relates to the field of logistics and warehousing equipment technology, and in particular to a pallet box that is easy to stack. Background Technology

[0002] As a common storage and transportation container, the stacking performance of pallet boxes directly affects space utilization and operational efficiency. Current technologies often employ a positioning method where protrusions on the lid and grooves on the bottom plate facilitate stacking. However, this method is passive positioning, resulting in limited stacking stability. Under significant lateral impacts or vibrations, there is still a risk of slippage or even collapse. To improve stability, some solutions use active locking methods such as bolt fastening or manual locking, but this leads to cumbersome, time-consuming, and labor-intensive operations, significantly reducing practicality. Therefore, there is an urgent need for a pallet box structure that can achieve both high-strength locking and rapid, convenient stacking and disassembly. Summary of the Invention

[0003] The purpose of this invention is to provide a conveniently stackable tray box to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A conveniently stackable tray box includes a tray and a box body surrounding the tray. Right-angle brackets are located at the four corners of the box body, and side plates are installed between adjacent right-angle brackets. A rectangular mounting groove extending towards the inner cavity of the box is provided on the upper outer wall of each right-angle bracket, and a vertically movable positioning lock head is installed within the rectangular mounting groove. A locking slot corresponding to the position of the positioning lock head is opened on the lower side of the tray. When the tray boxes are stacked, the tray of the upper tray presses down on the positioning lock head of the lower tray, causing the positioning lock head to automatically spring into the locking slot, thus locking the tray.

[0005] Preferably, the positioning lock head includes a housing and a latch disposed within the housing. The upper end of the latch is a wedge-shaped guide head, and the lower end of the latch is provided with an elastic element for driving the latch to extend and retract within the housing.

[0006] Preferably, a lever is provided on one side of the housing, wherein the two sides of the lever are rotatably connected to the housing via movable pins; a connecting rod is fixedly connected to the upper end of the lever, wherein the other end of the connecting rod extends toward the latch and is rotatably connected to it via a pin, so that the lever drives the latch to move up and down within the housing.

[0007] Preferably, the lower inner end of the right-angle bracket is provided with a connecting plate, wherein the connecting plate is fixedly connected to the support plate; the upper inner end of the right-angle bracket is provided with a support plate, wherein the support plate has a lock hole corresponding to the positioning lock head; the top of the lock tongue of the positioning lock head can pass through the lock hole and extend upward.

[0008] Preferably, the top of the right-angle bracket is provided with an outwardly folded guide edge, which, together with the support plate, forms a limiting groove for guiding contact with the pallet of the upper box during stacking.

[0009] Preferably, multiple positioning blocks are equidistantly installed on the side wall of the right-angle bracket along its vertical direction, and the end of the side plate is provided with positioning holes that are adapted to the positioning blocks. The side plate is fixed to the right-angle bracket by the snap-fit ​​between the positioning blocks and the positioning holes.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model achieves automatic locking after stacking by rigidly engaging the self-adaptive positioning lock head integrated on the right-angle bracket with the locking port of the base plate, effectively preventing horizontal slippage between the boxes and providing strong impact and vibration resistance; no additional operation is required during the stacking process, locking is achieved as soon as the box is placed down, greatly improving stacking efficiency; quick separation can be achieved through the manual lever unlocking mechanism; the snap-fit ​​connection between the right-angle bracket and the side plate enables rapid assembly and disassembly of the boxes; individual components can be replaced independently after damage, resulting in low maintenance costs and significant savings in transportation and storage space; by integrating the core locking function into the load-bearing right-angle bracket, the force flow path is clear and reasonable, ensuring the strength and durability of the overall structure while achieving powerful functionality. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the connection between the right-angle bracket and the side plate of this utility model; Figure 4 This is a schematic diagram of the positioning lock head of this utility model; Figure 5 This is an exploded view of the positioning lock head of this utility model.

[0012] The components are: 1. tray; 2. housing; 201. right-angle bracket; 202. side plate; 3. rectangular mounting groove; 4. positioning lock head; 401. housing; 402. lock tongue; 403. elastic element; 404. lever; 405. connecting rod; 5. lock mouth; 6. connecting plate; 7. support plate; 8. lock hole; 9. guide edge; 10. limiting groove; 11. positioning block; 12. positioning hole. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings.

[0014] Please refer to the following: Figures 1 to 5 To achieve the above objectives, this utility model provides the following technical solution: A conveniently stackable tray box includes a tray 1 and a box body 2 surrounding the tray 1. Right-angle brackets 201 are located at the four corners of the box body 2, and side plates 202 are installed between adjacent right-angle brackets 201. A rectangular mounting groove 3 extending towards the inner cavity of the box body 2 is provided on the upper outer wall of the right-angle bracket 201, and a vertically movable positioning lock head 4 is installed within the rectangular mounting groove 3. A locking slot 5 corresponding to the position of the positioning lock head 4 is opened on the lower side of the tray 1. When the tray boxes are stacked, the tray 1 of the upper tray presses down on the positioning lock head 4 of the lower tray, causing the positioning lock head 4 to automatically spring into the locking slot 5, completing the locking. When a single tray box is in an independent state, the positioning lock head 4 within the rectangular mounting groove 3 of the right-angle bracket 201 remains partially extended outward in a "standby" state under the action of its internal elastic element 403. When another upper tray box is placed on top of it, the bottom edge of the upper tray 1 will first contact the right-angle bracket 201 of the lower tray box. The extended positioning lock head 4; as the upper panel continues to descend, the downward pressure of its support plate 1 acts on the wedge-shaped guide head at the top of the positioning lock head 4, converting the vertical downward pressure into a force that causes the positioning lock head 4 to retract toward the inner cavity of the box 2, compressing its internal elastic element 403. The positioning lock head 4 is forced to retract into the right-angle bracket 201, making room for the upper panel to be fully positioned; when the upper panel is fully seated on the lower panel, the locking slot 5 on the side of its support plate 1 moves to a position directly opposite the positioning lock head 4 on the right-angle bracket 201 of the lower panel; at this time, due to the disappearance of the direct pressure from the upper support plate 1, the compressed elastic element 403 instantly releases its elastic force, driving the positioning lock head 4 to pop out and accurately embed into the locking slot 5 of the upper panel support plate 1; at this time, the upper and lower panels are rigidly connected together by the positioning lock heads 4 at the four corners and the locking slots 5, effectively limiting any relative movement in the horizontal direction and achieving stable stacking.

[0015] In a preferred embodiment, this utility model can be further configured as follows: Figure 4 , Figure 5As shown; the positioning lock head 4 includes a housing 401 and a locking tongue 402 disposed within the housing 401. The upper end of the locking tongue 402 is a wedge-shaped guide head, and the lower end of the locking tongue 402 is provided with an elastic element 403. The elastic element 403 is used to drive the locking tongue 402 to extend and retract within the housing 401. The positioning lock head 4 is an independent, self-contained functional module. Its function is to passively retract under the pressure of an external object and automatically extend when the pressure is removed, completing one "locking" action. When there is no external force, the locking tongue 402 is in an outwardly extended state under the drive of the elastic element 403, with the wedge-shaped guide head portion at its tip exposed outside the housing 401. Prepare to interact with external objects; when the edge of the upper plate 1 contacts the wedge-shaped guide head and continues to press down, the latch 402 is subjected to a downward force. This force overcomes the resistance of the elastic element 403 and pushes the latch 402 back into the housing 401. At this time, the elastic element 403 is compressed and stores energy; when the upper plate falls to the designated position, the locking jaw 5 on its plate 1 moves to the position aligned with the latch 402. Since the latch 402 is no longer subjected to the direct pressure of the plate 1, the compressed elastic element 403 immediately releases energy, driving the latch 402 to pop up quickly, so that its head is embedded in the upper locking jaw 5, completing the locking.

[0016] In a preferred embodiment, this utility model can be further configured as follows: Figure 4 , Figure 5 As shown; a lever 404 is provided on one side of the housing 401, wherein the two sides of the lever 404 are rotatably connected to the housing 401 through movable pins; a connecting rod 405 is fixedly connected to the upper end of the lever 404, wherein the other end of the connecting rod 405 extends toward the locking tongue 402 and is rotatably connected to it through a pin, so that the lever 404 drives the locking tongue 402 to move up and down inside the housing 401; when the locking tongue 402 is in the pop-out locking position, the various components of the unlocking mechanism remain stationary, and the lever 404 is at the initial angle; when it is necessary to separate the panel box, the operator uses his hand to pull down the lever 404 located on the outside of the housing 401, and the lever 404 rotates around its movable pin. This rotation is converted into a complex planar motion through the connecting rod 405 fixed at its upper end. The other end of the connecting rod 405 pulls (or pushes) the pin connected to the locking tongue 402; the movement of the connecting rod 405 eventually forces the locking tongue 402 to overcome the elastic force of its lower end elastic element 403 and move downward in the housing 401, so that its wedge head completely exits from the locking port 5 of the upper plate box; at this time, the upper and lower plates box can be separated. When the operator releases the lever 404, the locking tongue 402 is pushed upward by the elastic element 403 and drives the lever 404 back to the initial standby state.

[0017] In a preferred embodiment, this utility model can be further configured as follows: Figure 2 , Figure 3As shown; a connecting plate 6 is provided at the lower inner end of the right-angle bracket 201, wherein the connecting plate 6 is fixedly connected to the support plate 1; a support plate 7 is provided at the upper inner end of the right-angle bracket 201, wherein a lock hole 8 corresponding to the positioning lock head 4 is provided on the support plate 7; the top of the lock tongue 402 of the positioning lock head 4 can pass through the lock hole 8 and extend upward; the housing 401 of the positioning lock head 4 is firmly installed in the rectangular mounting groove 3 inside the right-angle bracket 201; at this time, the support plate 7 in front of the positioning lock head 4 plays a positioning and limiting role; the lock hole 8 provided on the support plate 7 provides a precise channel for the vertical extension and retraction of the lock tongue 402, and the wedge-shaped guide head of the lock tongue 402 extends or retracts through this lock hole 8; when stacking, the support plate 1 of the upper plate box presses down on the lock tongue 402, and this downward force passes through the lock tongue 402. The elastic element 403 inside the 02 is ultimately borne by the housing 401 of the positioning lock head 4 and the connecting plate 6 of the right-angle bracket 201, and is finally transmitted to the tray 1 of the entire lower plate box through the connecting plate 6. When the upper and lower plate boxes are locked, the lower plate box supports the lock tongue 402 through the support plate 7 of the right-angle bracket 201, thereby bearing the lateral force (such as shaking or impact) from the upper plate box and preventing the lock tongue 402 from bending or being damaged due to the lateral force. The connecting plate 6 ensures that the relative position between the right-angle bracket 201 and the tray 1 remains fixed. This means that the relative position between the positioning lock head 4 installed on the right-angle bracket 201 and the lock opening 5 opened on the side of the tray 1 is precisely fixed, ensuring that the lock tongue 402 can be accurately aligned with the lock opening 5 every time it is stacked.

[0018] In a preferred embodiment, this utility model can be further configured as follows: Figure 2 , Figure 3 As shown; the top of the right-angle bracket 201 is provided with an outwardly folded guide edge 9, which, together with the support plate 7, forms a limiting groove 10, used for guiding contact with the pallet 1 of the upper box during stacking; when the upper box begins to descend, ready to be stacked on the lower box, the bottom edge of the pallet 1 of the upper box has not yet contacted the positioning lock head 4 on the right-angle bracket 201 of the lower box; at this time, the upper pallet 1 will first contact and fall into the limiting groove 10 formed by the guide edge 9 and the support plate 7 of the right-angle bracket 201 of the lower box. This limiting groove 10 is like an open "guillotine", guiding and connecting... The limiting groove 10 initially restricts excessive offset of the upper and lower boxes in the horizontal plane (front-back and left-right directions) by the edge of the upper plate 1. Under the guidance of the limiting groove 10, the upper plate continues to descend smoothly. During this process, the relative position of the upper and lower boxes is continuously corrected to ensure that when the upper plate 1 descends to a certain height, the locking jaw 5 at its bottom can be in a precise interaction position with the positioning lock head 4 of the lower plate. Subsequently, the wedge-shaped surface of the positioning lock head 4 contacts the upper plate 1 and begins the locking process, which greatly improves the success rate and smoothness of stacking.

[0019] In a preferred embodiment, this utility model can be further configured as follows: Figure 3 As shown; multiple positioning blocks 11 are equidistantly installed on the side wall of the right-angle bracket 201 along its vertical direction. The end of the side plate 202 is provided with positioning holes 12 that are adapted to the positioning blocks 11. The side plate 202 is fixed to the right-angle bracket 201 by the snap-fit ​​of the positioning blocks 11 and the positioning holes 12. When installing the side plate 202, align the end of the side plate 202 with the gap between the two right-angle brackets 201, so that the positioning holes 12 on the end face of the side plate 202 are roughly aligned with the positioning blocks 11 on the side wall of the right-angle bracket 201. Then, push the side plate 202 into the box with force, so that the head of the positioning block 11 will first contact the positioning hole 12. When the side plate 202 is pushed to the predetermined position under the action of the thrust, the positioning block 11 will slide completely into the positioning hole 12, and the head of the positioning block 11 will be stuck behind the inner edge of the positioning hole 12, forming mechanical interference. At this time, the side plate 202 is firmly restricted on the right-angle bracket 201 and cannot be easily pulled out, thus realizing the fixation of the side wall of the box. This connection method between the positioning block 11 and the positioning hole 12 is a classic "snap-on connection", which perfectly realizes the core goals of modular design: rapid assembly, tool-free operation, and easy maintenance. It is a very efficient and reliable technology in industrial design.

[0020] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A stackable pallet box, comprising a pallet (1) and a box body (2) surrounding the pallet (1), wherein right-angle brackets (201) are provided at the four corners of the box body (2), and side plates (202) are installed between adjacent right-angle brackets (201); characterized in that, The right-angle bracket (201) has a rectangular mounting groove (3) extending toward the inner cavity of the box (2) on the upper side of its outer wall. A vertically movable positioning lock head (4) is installed in the rectangular mounting groove (3). The lower side of the tray (1) has a locking slot (5) corresponding to the position of the positioning lock head (4). The boxes are stacked one on top of the other. The tray (1) of the upper box presses down on the positioning lock head (4) of the lower box so that the positioning lock head (4) automatically pops into the locking slot (5) to complete the locking.

2. The stackable pallet box according to claim 1, characterized in that, The positioning lock head (4) includes a housing (401) and a locking tongue (402) disposed in the housing (401). The upper end of the locking tongue (402) is a wedge-shaped guide head, and the lower end of the locking tongue (402) is provided with an elastic element (403), which is used to drive the locking tongue (402) to extend and retract within the housing (401).

3. A conveniently stackable pallet box according to claim 2, characterized in that, A lever (404) is provided on one side of the housing (401), wherein the two sides of the lever (404) are rotatably connected to the housing (401) by movable pins; a connecting rod (405) is fixedly connected to the upper end of the lever (404), wherein the other end of the connecting rod (405) extends toward the locking tongue (402) and is rotatably connected to it by a pin, so that the lever (404) drives the locking tongue (402) to move up and down inside the housing (401).

4. A conveniently stackable pallet box according to claim 1, characterized in that, The lower inner side of the right-angle bracket (201) is provided with a connecting plate (6), wherein the connecting plate (6) is fixedly connected to the support plate (1); the upper inner side of the right-angle bracket (201) is provided with a support plate (7), wherein the support plate (7) is provided with a lock hole (8) corresponding to the positioning lock head (4); the top of the lock tongue (402) of the positioning lock head (4) can pass through the lock hole (8) and extend upward.

5. A conveniently stackable pallet box according to claim 4, characterized in that, The right-angle bracket (201) has an outwardly folded guide edge (9) at its top. The guide edge (9) and the support plate (7) form a limiting groove (10) for contacting and guiding the tray (1) of the upper box when stacked.

6. A conveniently stackable pallet box according to claim 1, characterized in that, Multiple positioning blocks (11) are equidistantly installed on the side wall of the right-angle bracket (201) along its vertical direction. The end of the side plate (202) is provided with positioning holes (12) that are adapted to the positioning blocks (11). The side plate (202) is fixed to the right-angle bracket (201) by the snap-fit ​​between the positioning blocks (11) and the positioning holes (12).

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