A turnover box that is easy to stack
By setting stops at the bottom of the turnover box, the box is easy to stack and space saving, solving the problems of waste and easy damage to traditional turnover boxes, and improving service life and storage and transportation efficiency.
Patent Information
- Application Number
- CN202110675387.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-06-18
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2041-06-18
AI Technical Summary
Traditional turnover boxes waste space in an empty box, resulting in high storage and transportation costs; while folding turnover boxes are easily damaged due to box assembly, reducing service life.
A turnover box that is easy to stack is designed. By setting stops at the bottom of the box, the folding or sliding function of the stops is used to facilitate stacking, and hide stops when there is no item to save space.
It realizes efficient use of space and reduces storage and transportation costs. At the same time, since the main box is an integral and has high strength, it avoids the problem of easy damage to the box and extends the service life of the turnover box.
Smart Images

Figure CN113200210B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of turnover, and in particular relates to a turnover box which is easy to stack. Background Art
[0002] Turnover boxes are commonly used in transportation, distribution, storage, circulation processing and other links. They can effectively utilize space and realize orderly transportation and storage. There are two types of traditional turnover boxes: the first type is an integrated turnover box. This type of turnover box occupies the same space regardless of whether it is loaded with items. Therefore, a lot of space is wasted in the empty box state, resulting in excessive storage and transportation costs. The second type is a foldable turnover box with a spliced box body. Although this type of turnover box saves space when empty, it is very easy to be damaged because the box body is spliced, which reduces the service life of the turnover box and greatly increases its use cost during its life cycle.
[0003] Therefore, the inventor is committed to designing a turnover box to solve the above problems. Summary of the invention
[0004] The purpose of the present invention is to provide a turnover box that is easy to stack, which is not only easy to stack, saves space, and reduces storage and transportation costs, but also has sufficient strength to ensure service life.
[0005] In order to achieve the above object, the first technical solution adopted by the present invention is:
[0006] A turnover box convenient for stacking comprises a box body, wherein a stopper is connected to the bottom corner and / or edge of the box body, and the stopper is hingedly or slidably connected to the box body.
[0007] As an improvement of the turnover box that is easy to stack according to the present invention, one end of the stop member is hinged to the box body through a rotating shaft, the other end of the stop member is movably engaged with the box body, and the end of the stop member is provided with a stop with an L-shaped cross-section.
[0008] As an improvement of the turnover box that is easy to stack according to the present invention, an inner positioning buckle and an outer positioning buckle are provided at the bottom of the box body, the rotating shaft is located between the inner positioning buckle and the outer positioning buckle, and the box body is buckled with the stop member through the inner positioning buckle or the outer positioning buckle.
[0009] As an improvement of the turnover box that is easy to stack according to the present invention, the stop member is located at the bottom corner of the box body, and a plurality of reinforcing ribs are provided at the bottom corner of the box body. The plurality of reinforcing ribs are distributed on both sides of the rotating shaft, and the plurality of reinforcing ribs cooperate with the plurality of clearance holes on the stop member.
[0010] In order to achieve the above object, the second technical solution adopted by the present invention is:
[0011] A turnover box convenient for stacking comprises a box body, wherein a stopper is connected to the bottom corner and / or edge of the box body, and the stopper is hingedly or slidably connected to the box body.
[0012] As an improvement of the turnover box that is easy to stack according to the present invention, one end of the stop member is hinged to the box body through a rotating shaft, the other end of the stop member is movably engaged with the box body, and the end of the stop member is provided with a stop with an L-shaped cross-section.
[0013] As an improvement of the turnover box that is easy to stack according to the present invention, an inner positioning buckle and an outer positioning buckle are provided at the bottom of the box body, the rotating shaft is located between the inner positioning buckle and the outer positioning buckle, and the box body is buckled with the stop member through the inner positioning buckle or the outer positioning buckle.
[0014] As an improvement of the turnover box that is easy to stack according to the present invention, the stop piece is located at the bottom edge of the box body, and a plurality of auxiliary reinforcement ribs are arranged at intervals at the bottom edge of the box body. The plurality of auxiliary reinforcement ribs are away from the rotating shaft and cooperate one by one with the plurality of clearance holes on the stop piece.
[0015] In order to achieve the above object, the third technical solution adopted by the present invention is:
[0016] A turnover box convenient for stacking comprises a box body, wherein a stopper is connected to the bottom corner and / or edge of the box body, and the stopper is hingedly or slidably connected to the box body.
[0017] As an improvement of the turnover box that is easy to stack according to the present invention, the stopper is slidably connected to the bottom of the box body and cooperates with a concave and convex stopper, and the end of the stopper is provided with a stopper with an L-shaped cross-section.
[0018] As an improvement of the turnover box that is easy to stack according to the present invention, the stop member is located at the bottom corner of the box body, and a plurality of sliding blocks are protruded at intervals at the bottom corner of the box body. The plurality of sliding blocks are slidably connected to the plurality of sliding grooves on the stop member in a one-to-one corresponding manner.
[0019] As an improvement of the turnover box that is easy to stack according to the present invention, side pins are respectively inserted on both sides of the stop member, and the two side pins respectively form a section of the two outer slide grooves, and two groups of stop grooves are arranged on the side walls of the other slide grooves at intervals, and any group of the stop grooves is matched with the protrusions on the side of the corresponding slider.
[0020] In order to achieve the above object, the fourth technical solution adopted by the present invention is:
[0021] A turnover box convenient for stacking comprises a box body, wherein a stopper is connected to the bottom corner and / or edge of the box body, and the stopper is hingedly or slidably connected to the box body.
[0022] As an improvement of the turnover box that is easy to stack according to the present invention, the stopper is slidably connected to the bottom of the box body and cooperates with a concave and convex stopper, and the end of the stopper is provided with a stopper with an L-shaped cross-section.
[0023] As an improvement of the turnover box that is easy to stack according to the present invention, the stop member is located at the bottom edge of the box body, and a plurality of sliding parts extend from the stop member at intervals. The plurality of sliding parts are slidably connected to a plurality of T-shaped grooves at the bottom of the box body in a one-to-one corresponding manner.
[0024] As an improvement to the turnover box that is easy to stack according to the present invention, two groups of stop grooves are provided at intervals on the sides of the sliding part at both ends of the stop member, and any group of the stop grooves is matched with the corresponding stop protrusions on the side walls of the T-shaped slide groove.
[0025] Compared with the prior art, the turnover box of the present invention is easy to stack, and a stopper is arranged at the bottom of the box. When the box is loaded with articles, the stopper is rotated outward, folded or slid outward to be opposite to the open side wall or corner of the box below, which is convenient for stacking; when there are no articles in the box, the stopper is hidden at the bottom of the box for support, which saves a lot of space when stacking. Since the main box of the turnover box is an integral body with high strength and strong carrying capacity, even in harsh environments, rough operation by the transporter will not cause damage to the turnover box, which greatly improves the service life of the turnover box. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 is a three-dimensional diagram of a turnover box in the first embodiment of the present invention, with the stopper in a hidden state;
[0027] Figure 2 is a three-dimensional diagram of a turnover box in the first embodiment of the present invention, with the stopper in an expanded state;
[0028] Figure 3 yes Figure 2 Magnified view at A in the middle;
[0029] Figure 4 is a three-dimensional diagram of a turnover box in the second embodiment of the present invention, with the stopper in a hidden state;
[0030] Figure 5 is a three-dimensional diagram of a turnover box in the second embodiment of the present invention, with the stopper in an expanded state;
[0031] Figure 6 yes Figure 5 Magnified view at B in the middle;
[0032] Figure 7is a three-dimensional diagram and a partial exploded diagram of a turnover box in the third embodiment of the present invention, with the stopper in an unfolded state;
[0033] Figure 8 yes Figure 7 Enlarged view at center C;
[0034] Fig. 9 yes Figure 7 Magnified view at D in the middle;
[0035] Fig.10 is an exploded and enlarged perspective view of a stop member and a side pin in a third embodiment of the present invention;
[0036] Fig.11 is a three-dimensional diagram of a turnover box in a fourth embodiment of the present invention, with the stopper in a hidden state;
[0037] Fig.12 is a three-dimensional diagram of a turnover box in a fourth embodiment of the present invention, with the stopper in an expanded state;
[0038] Fig.13 yes Fig.12 Magnified view at E in the middle.
[0039] Illustration Description:
[0040] 1. Box body, 11. Auxiliary reinforcement ribs, 12. Inner positioning buckle, 13. Outer positioning buckle, 14. Arc-shaped reinforcement ribs, 15. First slider, 151. Protrusion, 16. Second slider, 17. Limit block, 171. Stop protrusion, 2. Stop member, 21. Stopper, 22. First slide groove, 221. Stop groove, 23. Second slide groove, 24. First sliding part, 241. Limiting part, 2411. Stop slot, 25. Second sliding part, 3. Rotating shaft, 4. Side pin. DETAILED DESCRIPTION
[0041] The following specifically describes the implementation modes of the present invention in conjunction with the accompanying drawings. The accompanying drawings are only for reference and illustration and do not constitute a limitation on the scope of patent protection of the present invention. Embodiment 1
[0042] Reference Figures 1 to 3 A turnover box that is easy to stack includes a box body 1 and four stoppers 2. The four stoppers 2 are respectively located at four corners of the bottom of the box body 1. Each stopper 2 is hinged to the box body 1. By flipping the four stoppers 2, the four stoppers 2 can be unfolded or hidden at the bottom of the box body 1.
[0043] Reference Figure 2 and Figure 3The four corners at the bottom of the box body 1 are spaced apart and vertically protruded with an inner positioning buckle 12 and an outer positioning buckle 13. The inner positioning buckle 12 is far away from the corresponding corner edge of the box body 1, and the outer positioning buckle 13 is close to the corresponding corner edge of the box body 1. The box body 1 is buckled with the corresponding stop member 2 through the inner positioning buckle 12 or the outer positioning buckle 13. A plurality of reinforcing ribs are also spaced apart and vertically protruded at the corners of the bottom of the box body 1. The plurality of reinforcing ribs are specifically two groups of auxiliary reinforcing ribs 11 and an arc-shaped reinforcing rib 14. The functions of the plurality of reinforcing ribs are: when the stop member 2 When the stop member 2 is in the inner or outer positioning position, the reinforcing rib 11 bears the impact force during rough operation. When the stop member 2 is in the inner positioning position (hidden), the reinforcing rib 14 can prevent the key outer positioning buckle 13 from being damaged. The two groups of auxiliary reinforcing ribs 11 are arranged at intervals, and the arc-shaped reinforcing ribs 14 are vertically arranged at the corresponding corner edges of the box body 1. In order to save costs and facilitate production, in this embodiment, the inner positioning buckle 12, the outer positioning buckle 13, the auxiliary reinforcing ribs 11 and the arc-shaped reinforcing ribs 14 are all integrally formed with the box body 1.
[0044] Reference Figure 2 and Figure 3 Each of the stoppers 2 is triangular in shape, one end of the stopper 2 is hinged to the box body 1 through a rotating shaft 3, and the other end of the stopper 2 is movably engaged with the box body 1, the rotating shaft 3 is located between the corresponding inner positioning buckle 12 and the corresponding outer positioning buckle 13, and two groups of auxiliary reinforcement ribs 11 and arc-shaped reinforcement ribs 14 are distributed on both sides of the rotating shaft 3. Specifically, one group of auxiliary reinforcement ribs 11 is arranged at intervals and is located between the inner positioning buckle 12 and the rotating shaft 3, and the other group of auxiliary reinforcement ribs 11 is arranged at intervals and is located between the outer positioning buckle 13. Between the buckle 13 and the rotating shaft 3, the arc-shaped reinforcing rib 14 is away from the rotating shaft 3, and a plurality of clearance holes (not marked) are provided on the stop member 2. Any group of auxiliary reinforcing ribs 11 and arc-shaped reinforcing ribs 14 correspond to the plurality of clearance holes one by one. The stop member 2 is also provided with a snap-fitting hole (not marked) for snapping with the inner positioning buckle 12 and the outer positioning buckle 13. The end of each stop member 2 is provided with a stop 21 with an L-shaped cross-section. The surface of the stop 21 is L-shaped, and the stop 21 is used to cooperate with the opening of the turnover box to be stacked.
[0045] Reference Figures 1 to 3The method of using the turnover box that is easy to stack in this embodiment is as follows: when it is necessary to stack turnover boxes filled with items or place turnover boxes alone, external force flips the four stoppers 2 on a turnover box one by one, so that the four stoppers 2 are flipped 180 degrees and then unfolded, and each stopper 2 is pressed hard so that the stopper 2 is engaged with the external positioning buckle 13. At this time, the four stoppers 2 are just opposite to the opening corners of the turnover box below and are directly stacked on the turnover box below. When it is necessary to stack empty turnover boxes, external force flips the four stoppers 2 in the opposite direction, so that the four stoppers 2 are flipped 180 degrees and then folded, and each stopper 2 is pressed so that the stopper 2 is engaged with the internal positioning buckle 12. At this time, the four stoppers 2 are respectively hidden at the four corners at the bottom of the box body 1. Embodiment 2
[0046] Reference Figures 4 to 6 A turnover box that is easy to stack includes a box body 1 and four stoppers 2. The four stoppers 2 are respectively located at the edges of the bottom of the box body 1 (i.e., the edges in the length direction and the width direction of the box body 1). Each stopper 2 is hinged to the box body 1. By flipping the four stoppers 2, the four stoppers 2 can be unfolded or hidden at the bottom of the box body 1.
[0047] Reference Figure 5 and Figure 6 An inner positioning buckle 12 and an outer positioning buckle 13 are vertically protruded at each length and width edge of the bottom of the box body 1 at intervals, the inner positioning buckle 12 is far away from the edge of the box body 1, and the outer positioning buckle 13 is close to the edge of the box body 1. The box body 1 is buckled with the corresponding stop member 2 through the inner positioning buckle 12 or the outer positioning buckle 13. A plurality of reinforcing ribs are also vertically protruded at intervals at the edge of the bottom of the box body 1. In this embodiment, the plurality of reinforcing ribs are specifically a plurality of auxiliary reinforcing ribs 11 arranged at intervals. In order to save costs and facilitate production, in this embodiment, the inner positioning buckle 12, the outer positioning buckle 13 and the auxiliary reinforcing rib 11 are all integrally formed with the box body 1.
[0048] Reference Figure 5 and Figure 6 Each of the stop members 2 is in the shape of a strip, one end of the stop member 2 is hinged to the box body 1 through a rotating shaft 3, and the other end of the stop member 2 is movably engaged with the box body 1, and the rotating shaft 3 is located between the corresponding inner positioning buckle 12 and the corresponding outer positioning buckle 13. The stop member 2 is provided with a plurality of clearance holes (not marked), and a plurality of auxiliary reinforcement ribs 11 are located away from the rotating shaft 3 and correspond one-to-one with the plurality of clearance holes. The stop member 2 is also provided with a fastening hole (not marked) for fastening with the inner positioning buckle 12 and the outer positioning buckle 13. A stopper 21 with an L-shaped cross-section is provided at the end of each stop member 2. The surface of the stopper 21 is in the shape of a strip, and the stopper 21 is used to cooperate with the opening of the turnover box to be stacked.
[0049] Reference Figures 4 to 6The method of using the turnover box that is easy to stack in the embodiment is as follows: when it is necessary to stack turnover boxes filled with items or place turnover boxes alone, external force flips the four stoppers 2 on a turnover box one by one, so that the four stoppers 2 are flipped 180 degrees and then unfolded, and each stopper 2 is pressed hard so that the stopper 2 is engaged with the external positioning buckle 13. At this time, the four stoppers 2 are just opposite to the opening edge of the turnover box below and are directly stacked on the turnover box below. When it is necessary to stack empty turnover boxes, external force flips the four stoppers 2 in the opposite direction, so that the four stoppers 2 are flipped 180 degrees and then folded, and each stopper 2 is pressed so that the stopper 2 is engaged with the internal positioning buckle 12. At this time, the four stoppers 2 are all hidden at the edge of the bottom of the box body 1. Embodiment 3
[0050] Reference Figures 7 to 10 A turnover box that is easy to stack includes a box body 1 and four stop members 2. The four stop members 2 are respectively located at four corners of the bottom of the box body 1. Each stop member 2 is slidably connected to the box body 1. By sliding the four stop members 2, the four stop members 2 can be slid out or hidden at the bottom of the box body 1.
[0051] Reference Figures 7 to 9 A plurality of sliders are convexly provided at intervals at the bottom corners of the box body 1. In the present embodiment, the plurality of sliders are specifically a first slider 15 and two second sliders 16 arranged at intervals. The first slider 15 is located between the two second sliders 16. In the present embodiment, the first slider 15 is T-shaped, and arc-shaped protrusions 151 are convexly provided on two opposite sides of the first slider 15. The two second sliders 16 are both L-shaped. In order to save costs and facilitate production, in the present embodiment, the second slider 16 and the first slider 15 are both integrally formed with the box body 1.
[0052] Reference Figures 8 to 10 Each of the stoppers 2 is triangular in shape, and is provided with two second slide grooves 23 and a first slide groove 22. The two second slide grooves 23 are arranged at intervals and are located at the periphery of the first slide groove 22, that is, the first slide groove 22 is located between the two second slide grooves 23, and a side groove (not shown) is provided on the side wall of the second slide groove 23 away from the first slide groove 22. The side groove is used to make way for the head of the second slider 16. A side pin 4 is inserted into the two opposite sides of the stopper 2, and the two side pins 4 are respectively inserted into the corresponding side grooves. The first slide groove 22 is provided with two groups of stop grooves 221 at intervals on the opposite side walls thereof, and any group of stop grooves 221 is matched with the protruding portion 151 of the first slide block 15 in a concave-convex manner. The opposite side walls of the first slide groove 22 are also provided with a pair of through grooves (not shown), which are used to make way for the head of the first slide block 15. The pair of through grooves is located between the two groups of stop grooves 221, and the second slide block 16 passes through the corresponding Second chute 23The end of each stop member 2 is provided with a stopper 21 with an L-shaped cross section. The surface of the stopper 21 is L-shaped, and the stopper 21 is used to cooperate with the opening of the turnover box to be stacked.
[0053] Reference Figures 7 to 10 The method of using the turnover box that is easy to stack in this embodiment is: push the side pins 4 on both sides from the side of the stop member 2, so that the two side pins 4 are respectively inserted into the corresponding side grooves and form a section of the corresponding second slide groove 23, completing the assembly of the stop member 2 and the box body 1. When it is necessary to place the turnover box individually or stack the turnover boxes, external force pushes the four stop pieces 2 on the turnover box one by one, so that the four stop pieces 2 slide outward along the bottom diagonal of the box body 1 until the protrusion 151 on the first slider 15 is matched with the stop groove 221 on the first slide 22 close to the center of the box body 1, and the stop piece 2 stops sliding. At this time, the four stop pieces 2 are just opposite to the opening edge of the turnover box below and are directly stacked on the turnover box below. When it is necessary to stack the empty turnover boxes, external force pushes the four stop pieces 2 on the turnover box one by one, so that the four stop pieces 2 slide inward in the opposite direction along the bottom diagonal of the box body 1 until the protrusion 151 on the first slider 15 is matched with the stop groove 221 on the first slide 22 away from the center of the box body 1, and the stop piece 2 stops sliding. At this time, the four stop pieces 2 are respectively hidden at the four corners of the bottom of the box body 1. Embodiment 4
[0054] Reference Figures 11 to 13 A turnover box that is easy to stack includes a box body 1 and four stoppers 2. The four stoppers 2 are respectively located at the edges of the bottom of the box body 1 (i.e., the edges in the length direction and the width direction of the box body 1). Each stopper 2 is slidably connected to the box body 1. By sliding the four stoppers 2, the four stoppers 2 can be slid out or hidden at the bottom of the box body 1.
[0055] Reference Fig.12 and Fig.13 A plurality of T-shaped slide grooves (not shown) are arranged at intervals at the bottom edge of the box body 1, and each T-shaped slide groove is formed by a pair of limit blocks 17 at the bottom of the box body 1. Stop protrusions 171 are respectively provided on the two opposite side walls of the T-shaped slide grooves at the two ends of the same length direction or the same width direction (i.e., the inner walls of the corresponding limit blocks 17). In order to save costs and facilitate production, in this embodiment, all the limit blocks 17 are integrally formed with the box body 1.
[0056] Reference Fig.12 and Fig.13Each of the stoppers 2 is in a strip shape, and each of the stoppers 2 is provided with a plurality of sliding portions extending therefrom at intervals, and the plurality of sliding portions correspond to the shapes of the plurality of T-shaped slide grooves one by one, and the plurality of sliding portions 25 are specifically two first sliding portions 24 and a plurality of second sliding portions 25, and the two first sliding portions 24 and the plurality of second sliding portions 25 are respectively slidably connected to the plurality of T-shaped slide grooves at the bottom of the box body 1 in a one-to-one correspondence, and the two first sliding portions 24 are located at the two ends of the stoppers 2, that is, the plurality of second sliding portions 25 on the same stopper 2 It is arranged at intervals between the two first sliding parts 24, and two limiting parts 241 are arranged side by side at the upper end of each first sliding part 24. The two limiting parts 241 are arranged at intervals and two groups of stop grooves 2411 are convexly provided on their outer walls at intervals. Any group of stop grooves 2411 is matched with the stop protrusions 171 of the corresponding T-shaped slide groove side walls. The end of each stop member 2 is provided with a stop 21 with an L-shaped cross-section, and the surface of the stop 21 is strip-shaped. The stop 21 is used to match with the opening of the turnover box to be stacked.
[0057] Reference Figures 11 to 13 The method of using the turnover box that is convenient for stacking in this embodiment is as follows: when it is necessary to place a turnover box alone or stack the turnover boxes, external force pushes the four stoppers 2 on the turnover box one by one, so that the four stoppers 2 slide outward along the length direction or width direction of the bottom of the box body 1 until the stop protrusion 171 at the bottom of the box body 1 is matched with the stop groove 2411 of the first sliding part 24 near the center of the box body 1, and the stopper 2 stops sliding. At this time, the four stoppers 2 are just in contact with the opening of the turnover box below. The edges of the openings are opposite to each other and are directly stacked on the turnover boxes below. When empty turnover boxes need to be stacked, external force pushes the four stop members 2 on the turnover boxes one by one, so that the four stop members 2 slide inward in the opposite direction along the length direction or width direction of the bottom of the box body 1 until the stop protrusion 171 at the bottom of the box body 1 is matched with the stop groove 2411 of the first sliding part 24 away from the center of the box body 1, and the stop member 2 stops sliding. At this time, the four stop members 2 are respectively hidden at the four edges of the bottom of the box body 1.
[0058] The turnover box of the present invention is easy to stack, by setting a stopper 2 at the bottom of the box body 1, when there are articles in the box, the stopper 2 is rotated outward, folded or slid outward to be opposite to the open side wall or corner of the box body 1 below, which is convenient for stacking; when there are no articles in the box, the stopper 2 that plays a supporting role is hidden at the bottom of the box body 1, which saves a lot of space when stacking. Since the main box body of the turnover box is an integral body with high strength and strong carrying capacity, even in harsh environments, rough operation by the transporter will not cause damage to the turnover box, which greatly improves the service life of the turnover box.
[0059] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of protection of the present invention. Therefore, equivalent changes made within the scope of the patent application of the present invention are still within the scope covered by the present invention.
Claims
1. A turnover box that is easy to stack, comprising a box body, characterized in that: The stopper is slidably connected to the bottom of the box body and cooperates with the concave and convex stopper. The end of the stopper is provided with a stopper with an L-shaped cross section. The stopper is located at the bottom corner of the box body. A plurality of sliders are convexly provided at intervals at the bottom corner of the box body. The plurality of sliders are slidably connected with the plurality of slide grooves on the stopper in a one-to-one corresponding manner. All the sliders are specifically a first slider and two second sliders arranged at intervals. The first slider is located between the two second sliders, the two second sliders are both L-shaped, and the slide grooves are specifically two first Two chutes and a first chute, the first chute is located between the two second chutes, The stop member Two opposite sides Side pins are inserted A side groove is provided on the side wall of the second slide groove away from the first slide groove for making way for the head of the second slider. The side pins are respectively inserted into the corresponding side grooves to form a section of the corresponding second slide groove. Two groups of stop grooves are arranged on the side wall of the first sliding groove at intervals, and any group of the stop grooves is matched with the corresponding protruding parts on the side of the first sliding block in a concave-convex manner.
Citation Information
Patent Citations
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CN111498245A
Turnover box convenient to stack
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