A folding storage box

Abstract

The utility model relates to daily household articles technical field discloses a kind of folding storage box, comprising: box, including upper frame and lower frame being oppositely spaced arrangement;At least two support structures;Each support structure includes first support piece and second support piece, each first support piece includes first connecting rod and second connecting rod of cross fixed connection, each second support piece includes third connecting rod and fourth connecting rod of cross fixed connection;Locking piece, locking piece is used to when first support piece and second support piece rotate to locking the relative position of first support piece and second support piece to be 180 degrees;First support piece and second support piece form two stable triangular support units respectively, greatly enhance the bending and torsional stiffness of support structure, so that the lateral wall structure strength of box is significantly enhanced, user only needs to unlock the locking piece on each support structure, then through pulling upper frame or lower frame can realize the synchronous folding or unfolding of each support structure.

Description

Technical Field

[0001] This utility model relates to the field of everyday household goods technology, and in particular to a folding storage box. Background Technology

[0002] Currently, there are various foldable storage boxes on the market. Their structure typically consists of a box body and a lid. The sides of the box body are made of soft materials (such as film or cloth) to allow for folding and storage when not in use. For example, patent document application number 201210393310.5 discloses a foldable storage box. Figure 1 and Figure 2 As shown, it includes a box body and a lid; the box body includes a frame 101, a connecting block 105 is installed on the frame 101, and a bendable connecting leg 104 is on the connecting block 105. The connecting leg 104 is movably connected to one end of the support leg 102; the lower edge of the frame 101 is connected to the opening of a soft cloth bag, and a bottom plate 103 is provided at the bottom of the soft cloth bag. The support leg 102 abuts against the bottom plate 103. The four support legs 102 are independently located at the four corners of the side wall of the box body. The support of the box body depends entirely on the support legs 102 at the four corners, resulting in the lack of a support structure on the side wall of the box body and insufficient strength of the box body; and when folding, the user needs to operate each support leg 102 one by one, which is inefficient and affects the user's convenience. Utility Model Content

[0003] The technical problem to be solved by this utility model is that the four support rods of the existing foldable storage box are located at the corners of the side wall of the storage box. The support structure is scattered and the structural strength is poor. Moreover, each support leg is folded separately when folding, resulting in low folding efficiency.

[0004] To solve the above-mentioned technical problems, this utility model provides a folding storage box, comprising: The enclosure includes an upper frame and a lower frame arranged at intervals. At least two support structures, wherein one support structure is located on the first side of the box and the other support structure is located on the second side opposite to the first side of the box; Each support structure includes a first support member and a second support member. Each first support member includes a first link and a second link that are fixedly connected in a cross direction. Each second support member includes a third link and a fourth link that are fixedly connected in a cross direction. The intersection of the first link and the second link and the intersection of the third link and the fourth link are rotatably connected with the lateral direction of the upper frame as the axis of rotation. The ends of the first link and the second link are rotatably connected to the upper frame, and the ends of the third link and the fourth link are rotatably connected to the lower frame. A locking element is used to lock the relative position of the first support and the second support when they are rotated to a 180-degree angle.

[0005] Preferably, the first support member is provided with a first slide groove, the second support member is provided with a second slide groove communicating with the first slide groove, and the locking member includes a slider, which is slidably disposed in the first slide groove or the second slide groove; When the first support member and the second support member rotate to 180 degrees, one end of the slider is located in the first slide groove and the other end of the slider is located in the second slide groove. The slider is also provided with a locking part, which is used to lock the position of the slider.

[0006] Preferably, the slider includes a body, and the locking part is an elastic latch block disposed on the body; The groove wall of the first or second slide is provided with a first locking groove and a second locking groove that match the elastic locking block.

[0007] Preferably, the width of the elastic block is smaller than the width of the body; The first and second locking grooves are spaced apart along the length of the first slide groove on the side wall of the first slide groove.

[0008] Preferably, a sliding block is provided on the side wall opposite to the side wall where the elastic locking block is provided on the main body, and a sliding groove is provided on the side wall opposite to the side wall where the first locking groove and the second locking groove are provided. When the elastic block is engaged in the first locking groove, the sliding block abuts against one wall of the sliding groove along its length. When the elastic block is engaged in the second locking groove, the sliding block abuts against the other wall of the sliding groove along its length.

[0009] Preferably, the bottom of the first and / or second sliding grooves is provided with friction strips.

[0010] Preferably, the box body is also equipped with a box lid, which is detachably connected to the upper frame.

[0011] Preferably, the bottom of the lower frame is equipped with multiple rollers, and the lid is provided with receiving grooves that match each roller.

[0012] Preferably, the lid of the box is also provided with a functional groove, and the functional groove is provided with a groove cover.

[0013] Preferably, all side walls of the enclosure are covered with soft material.

[0014] Preferably, the upper and lower edges of the soft material are connected to the upper frame and the lower frame, respectively, so that the soft material is in a pre-stretched state when the box is unfolded to the use state.

[0015] Preferably, the tensile strain of the soft material in the pre-stretched state is 1% to 15%, and the initial in-plane tensile force of the soft material in the pre-stretched state is 0.5 N / cm to 5 N / cm.

[0016] Preferably, the tensile strain of the soft material in the pre-stretched state is 3% to 8%.

[0017] Preferably, the soft material is provided with reinforcing strips at the corners of adjacent side walls of the box, and the upper and lower edges of the reinforcing strips are connected to the upper frame and the lower frame, respectively.

[0018] Preferably, the tear strength of the soft material is ≥1500N / 5cm, and the water pressure resistance of the soft material is ≥5000mmH2O.

[0019] Compared with the prior art, the folding storage box of this utility model has the following advantages: The folding storage box of this utility model embodiment is provided with at least two support structures. The first support member of the support structure has a first and second connecting rod arranged in a cross pattern, and the second support member has a third and fourth connecting rod arranged in a cross pattern. The first and second support members respectively form two stable triangular support units, greatly enhancing the bending and torsional stiffness of the support structure and significantly strengthening the side wall structure of the box. Compared with the existing folding storage boxes with support points scattered at the four corners, this effectively avoids the shaking and loosening of the box. Since the support structure on each side is itself a rotating connection between the first and second support members, a linkage control of the single-sided support structure is formed. The user only needs to unlock the locking pieces on each support structure to release the relative position lock of the first and second support members. Then, by pulling the upper or lower frame, the synchronous folding or unfolding of each support structure can be achieved, thus completing the folding or unfolding of the entire box. The folding process is efficient and labor-saving. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the unfolded structure of a foldable storage box using existing technology; Figure 2 This is a schematic diagram of the folded structure of a foldable storage box using existing technology; Figure 3 This is a first-view perspective three-dimensional structural diagram of the folding storage box provided in this embodiment of the utility model; Figure 4 This is a second-view perspective three-dimensional structural diagram of the folding storage box provided in this embodiment of the utility model; Figure 5 This is a front view of the folding storage box provided in this embodiment of the utility model; Figure 6 This is a side view of the folding storage box provided in an embodiment of this utility model; Figure 7 This is a first-view three-dimensional structural diagram of the folding storage box provided in this embodiment of the utility model after removing the soft surface layer; Figure 8 This is a second-view three-dimensional structural diagram of the folding storage box provided in this embodiment of the utility model after removing the soft surface layer; Figure 9 This is a third-view perspective three-dimensional structural diagram of the folding storage box provided in this embodiment of the utility model after removing the soft surface layer; Figure 10 This is a first-view structural schematic diagram of the support structure of the folding storage box provided in this embodiment of the utility model; Figure 11 This is a second-view structural schematic diagram of the support structure of the folding storage box provided in this embodiment of the utility model; Figure 12 This is a third-view structural diagram of the support structure of the folding storage box provided in this embodiment of the utility model; Figure 13 yes Figure 12 Sectional view along axis AA; Figure 14 This is a first-view exploded view of the support structure of the folding storage box provided in this embodiment of the utility model; Figure 15 This is a second-view exploded view of the support structure of the folding storage box provided in this embodiment of the utility model; Figure 16 This is a first-view three-dimensional structural diagram of the folding storage box in its folded state, provided in an embodiment of this utility model. Figure 17 This is a second-view three-dimensional structural diagram of the folding storage box in its folded state, provided in an embodiment of this utility model. Figure 18 This is a schematic diagram of the support structure of the folding storage box provided in this embodiment of the utility model in its folded state; Figure 19 This is a first-view structural diagram of the slider of the folding storage box provided in this embodiment of the utility model; Figure 20 This is a second-view structural diagram of the slider of the folding storage box provided in this embodiment of the utility model; Figure 21 This is a third-view structural diagram of the slider of the folding storage box provided in this embodiment of the utility model; Figure 22 This is a first-view structural diagram of the first support member of the folding storage box provided in this embodiment of the utility model; Figure 23 This is a second-view structural diagram of the first support member of the folding storage box provided in this embodiment of the utility model; Figure 24 This is a schematic diagram of the structure of the second support member of the folding storage box provided in this embodiment of the utility model; Figure 25 This is a schematic diagram showing the soft material provided in this utility model embodiment being connected to the upper and lower frames through sewing and fastening processes; Figure 26 This is a first-view schematic diagram of the soft material provided in this utility model embodiment being connected to the upper and lower frames via sewing and Velcro. Figure 27 This is a second-view schematic diagram showing the soft material provided in this utility model embodiment being connected to the upper and lower frames via sewing and Velcro. Figure 28 yes Figure 27 Sectional view along axis AA; Figure 29 yes Figure 28 Enlarged view of point B in the image; Figure 30 This is a schematic diagram showing the connection between the soft material provided in this embodiment of the utility model and the upper and lower frames through a locking assembly method using positioning posts.

[0021] In the diagram, 1 is the housing; 2 is the upper frame; 21 is the first mounting slot; 211 is the first receiving cavity; and 22 is the opening slot. 3. Lower frame; 31. Second mounting slot; 311. Second receiving cavity; 4. Soft material; 5. Support structure; 6. First support component; 61. First connecting rod; 62. Second connecting rod; 60. First vertical section; 601. First mounting column; 63. First sliding groove; 631. First locking groove; 632. Second locking groove; 633. Sliding groove; 634. Guide groove; 7. Second support member; 71. Third connecting rod; 72. Fourth connecting rod; 70. Second vertical section; 701. Second mounting column; 73. Second sliding groove; 8. Slider; 81. Body; 811. Elastic latch; 812. Slider; 813. Guide bar; 82. Operating part; 821. Operating groove; 9. Friction strip; 10. Connecting ear; 11. Box cover; 12. Roller; 13. Receiving groove; 14. Functional groove; 15. Groove cover; 16. Fastener body; 17. Stitching thread; 18. Velcro; 19. Mounting post; 101. Frame; 102. Support leg; 103. Base plate; 104. Connecting foot; 105. Connecting block; 106. Screw; 107. Support pad. Detailed Implementation

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] like Figures 3 to 24 As shown, a preferred embodiment of the present invention provides a folding storage box, comprising: Box 1 includes an upper frame 2 and a lower frame 3 arranged at intervals between each other; At least two support structures 5, wherein one support structure 5 is disposed on the first side of the box 1 and the other support structure 5 is disposed on the second side opposite to the first side of the box 1; Each support structure 5 includes a first support member 6 and a second support member 7. Each first support member 6 includes a first connecting rod 61 and a second connecting rod 62 that are cross-fixed. Each second support member 7 includes a third connecting rod 71 and a fourth connecting rod 72 that are cross-fixed. The intersection of the first connecting rod 61 and the second connecting rod 62 and the intersection of the third connecting rod 71 and the fourth connecting rod 72 are rotatably connected to the upper frame 2 with the lateral direction as the axis of rotation. The ends of the first connecting rod 61 and the second connecting rod 62 are rotatably connected to the upper frame 2, and the ends of the third connecting rod 71 and the fourth connecting rod 72 are rotatably connected to the lower frame 3. A locking element is provided to lock the relative positions of the first support 6 and the second support 7 when the first support 6 and the second support 7 are rotated to a 180-degree angle.

[0027] The folding storage box of this utility model embodiment is provided with at least two support structures 5. At the same time, the first support member 6 of the support structure 5 has a first connecting rod 61 and a second connecting rod 62 arranged in a cross direction, and the second support member 7 has a third connecting rod 71 and a fourth connecting rod 72 arranged in a cross direction. The first support member 6 and the second support member 7 respectively form two stable triangular support units, which greatly enhances the bending and torsional stiffness of the support structure 5 and significantly enhances the strength of the side wall structure of the box body 1. Compared with the support points of the existing folding storage box scattered at the four corners, it effectively avoids the shaking and loosening of the box body 1. Since the support structure 5 on each side is itself rotatably connected to the first support member 6 and the second support member 7, a linkage control of the support structure 5 on one side is formed. The user only needs to unlock the locking piece on each support structure 5 to release the locking of the relative position of the first support member 6 and the second support member 7. Then, by pulling the upper frame 2 or the lower frame 3, the synchronous folding or unfolding of each support structure 5 can be achieved, thus completing the folding or unfolding of the entire box body 1. The folding process is efficient and labor-saving.

[0028] Specifically, the upper ends of the first connecting rod 61 and the second connecting rod 62 each have a first vertical section 60. First mounting posts 601 are fixedly installed on both sides of the first vertical section 60. The upper frame 2 has two first mounting slots 21. Each first vertical section 60 is installed in its corresponding first mounting slot 21. Each end of each first mounting slot 21 has a first receiving cavity 211. The two first mounting posts 601 are rotatably installed in their respective first receiving cavities 211, thereby enabling the rotation of the first support member 6 and the upper frame 2. Connection; the lower ends of the third link 71 and the fourth link 72 have a second vertical section 70, and the two sides of the second vertical section 70 are fixedly installed with second mounting posts 701. The lower frame 3 is provided with two second mounting slots 31, and each second vertical section 70 is installed in the corresponding second mounting slot 31. Each end of the second mounting slot 31 is provided with a second receiving cavity 311, and the two second mounting posts 701 are rotatably installed in the corresponding second receiving cavity 311, thereby realizing the rotatable connection between the second support member 7 and the lower frame 3.

[0029] The first support member 6 and the second support member 7 are embedded in the mounting grooves in the upper frame 2 and the lower frame 3 through the vertical sections at their ends. The mounting posts on the vertical sections are embedded in the receiving cavity, and the mounting posts rotate in the receiving cavity, making the positioning more accurate and reliable, avoiding loosening at the connection, and transmitting the force borne by the first support member 6 and the second support member 7 more evenly to the entire upper and lower frame 3, further enhancing the stability and load-bearing capacity of the overall structure and extending its service life.

[0030] Specifically, the first support member 6 is provided with a first slide groove 63, the second support member 7 is provided with a second slide groove 73 that communicates with the first slide groove 63, and the locking member includes a slider 8, which is slidably disposed in the first slide groove 63 or the second slide groove 73. When the first support member 6 and the second support member 7 rotate to 180 degrees, one end of the slider 8 is located in the first slide groove 63 and the other end of the slider 8 is located in the second slide groove 73. The slider 8 is also provided with a locking part, which is used to lock the position of the slider 8.

[0031] When it is necessary to rotate the first support member 6 and the second support member 7 relative to each other, the slider 8 only needs to be slid back to the position located only within the first groove 63. When the first support member 6 and the second support member 7 rotate to 180 degrees, the slider 8 is slid so that the slider 8 passes through the first groove 63 and the second groove 73 at the same time. The slider 8 rigidly connects the first support member 6 and the second support member 7 together, effectively restricting the relative rotation of the first support member 6 and the second support member 7, thereby ensuring the stability and reliability of the support state and avoiding accidental folding during use.

[0032] Specifically, the slider 8 includes a body 81, and the locking part is an elastic latch 811 disposed on the body 81; The groove wall of the first slide groove 63 or the second slide groove 73 is provided with a first locking groove 631 and a second locking groove 632 that match the elastic locking block 811.

[0033] The position of the slider 8 is locked by the cooperation of the first locking groove 631 and the second locking groove 632 with the locking block. When the elastic locking block 811 on the slider 8 is engaged in the first locking groove 631, the slider 8 is located in the first sliding groove 63 or the second sliding groove 73, and the second support member 7 can rotate freely relative to the first support member 6 to fold. When the elastic locking block 811 on the slider 8 is engaged in the second locking groove 632, the slider 8 is simultaneously inserted into the first sliding groove 63 and the second sliding groove 73.

[0034] Specifically, the width of the elastic block 811 is smaller than the width of the body 81; the first locking groove 631 and the second locking groove 632 are spaced apart on the side wall of the first sliding groove 63 along the length direction of the first sliding groove 63.

[0035] When the body 81 slides within the first slide groove 63, and the elastic block 811 protrudes and locks into the first locking groove 631 or the second locking groove 632, the position of the body 81 is locked, making it convenient for the user to operate. The user only needs to press the elastic block 811 out of the first locking groove 631 or the second locking groove 632 to adjust the position of the slider 8.

[0036] Specifically, a sliding block 812 is provided on the side wall of the main body 81 opposite to the side wall where the elastic locking block 811 is provided, and a sliding groove 633 is provided on the side wall of the first sliding groove 63 opposite to the side wall where the first locking groove 631 and the second locking groove 632 are provided. Through the cooperation of the elastic locking block 811 and the sliding block 812, the position of the slider 8 is locked. When the elastic locking block 811 is locked in the first locking groove 631, the sliding block 812 abuts against one groove wall in the length direction of the sliding groove 633. When the elastic locking block 811 is locked in the second locking groove 632, the sliding block 812 abuts against the other groove wall in the length direction of the sliding groove 633. This improves the stability of the locking action.

[0037] Specifically, the bottom of the second slide groove 73 is provided with friction strips 9 to appropriately increase the friction force when the slider 8 slides, thereby further improving the stability of the locking action.

[0038] Specifically, the slider 8 also includes an operation part 82, which is integrally formed with the body 81. The size of the operation part 82 is larger than the size of the first slide groove 63, so that the operation part 82 is always located outside the first slide groove 63. In order to facilitate user operation, the operation part 82 is provided with an operation groove 821, and the user slides the slider 8 by inserting his / her finger into the operation groove 821.

[0039] Specifically, on the side wall of the slider 8, there is an elastic block 811, and on both sides of the elastic block 811, there are guide strips 813. Correspondingly, the bottom of the first slide groove 63 is provided with a guide groove 634. The guide strips 813 are slidably disposed in the guide groove 634, which effectively restricts the slider 8 from radial displacement or circumferential rotation during the sliding process, and ensures that the slider 8 always moves smoothly and steadily along the predetermined trajectory.

[0040] Specifically, a connecting lug 10 with a through hole is provided at the lower end of the first support member 6, and a corresponding connecting lug 10 with a through hole is provided at the upper end of the second support member 7, so that their through holes are coaxially aligned. A rotating shaft is inserted into the connecting lug 10, thereby rotatably connecting the first support member 6 and the second support member 7.

[0041] Specifically, both ends of the upper frame 2 are provided with opening slots 22, which make it easy for users to adjust the height of the upper frame 2 through the opening slots 22.

[0042] Specifically, the box body 1 is also equipped with a box cover 11, which is detachably connected to the upper frame 2.

[0043] Specifically, the bottom of the lower frame 3 is equipped with multiple rollers 12, and the lid 11 is provided with receiving grooves 13 that match each roller 12. By providing receiving grooves 13 on the top of the lid 11 that match the bottom rollers 12, the function of the rollers 12 used for movement can be extended to a positioning and locking mechanism when stacking. When multiple storage boxes are stacked up and down, the rollers 12 at the bottom of the upper box 1 will naturally embed into the receiving grooves 13 on the lid 11 of the lower box 1, which improves the stability and safety of the stacking. Even if it is slightly bumped, it is difficult to slip or overturn.

[0044] Specifically, the lid 11 is also provided with a functional slot 14, and the functional slot 14 is provided with a slot cover 15; users can put desiccant and other items in the functional slot 14.

[0045] Specifically, each side wall of the box 1 is covered with soft material 4.

[0046] In other embodiments, the bottom of the first groove 63 is also provided with friction strips 9.

[0047] In other embodiments, a hinge is provided between the first support member 6 and the second support member 7, with one end of the hinge connected to the first support member and the other end of the hinge connected to the second support member.

[0048] In other embodiments, the first locking groove 631 and the second locking groove 632 are spaced apart on the side wall of the second slide groove 73 along the length direction of the second slide groove 73; when the slider 8 is located entirely in the second slide groove 73, the first support member 6 and the second support member 7 can be rotated relative to each other.

[0049] The working process of this utility model is as follows: When the user needs to use the folding storage box, the folding storage box in the folded state is taken out, and the box cover 11 is opened. At this time, the elastic block 811 on the slider 8 is in the first locking groove 631, and the sliding block 812 abuts against one groove wall in the length direction of the sliding groove 633, so that the slider 8 is locked. At this time, the first support member 6 and the second support member 7 can slide relative to each other. The user holds the upper frame 2 and the lower frame 3 with both hands respectively and pulls them outward to restore the three-dimensional shape of the box body 1. When the first support member 6 and the second support member 7 rotate to the fully extended support state, the first sliding groove on them... When the first slide groove 63 and the second slide groove 73 are aligned, the user presses the elastic block 811 into the first locking groove 631 and slides the slider 8 along the length of the first slide groove 63, so that the slider 8 simultaneously enters the first slide groove 63 and the second slide groove 73. At this time, the elastic block 811 on the slider 8 is engaged in the second locking groove 632, and the sliding block 812 abuts against the other groove wall in the length direction of the slide groove 633, so that the position of the slider 8 is locked. The first support member 6 and the second support member 7 are rigidly connected together by the slider 8 to prevent them from rotating relative to each other, thereby ensuring the stability of the shape of the box 1 in the use state.

[0050] After placing the appropriate items inside the case 1, install the lid 11 onto the upper frame 2. For moisture protection and insect repellency, open the slot cover 15 on the functional slot 14, place the appropriate items inside, and then close the slot cover 15. In the unfolded state, the entire case 1 filled with items can be easily moved by the rollers 12 at the bottom of the lower frame 3, and the opening slots 22 on both sides also facilitate short-distance carrying.

[0051] When not using the folding storage box, empty the contents of the box, remove the lid 11, locate the slider 8 for each support structure 5 on both sides of the box body 1, slide the slider 8 upwards, when the elastic block 811 disengages from the second locking groove 632 and finally engages with the first locking groove 631, the slider 8 is locked in the position completely within the first sliding groove 63, thus releasing the lock on the second support member 7.

[0052] Apply pressure to the upper frame 2 and the lower frame 3 with both hands to bring them closer together. At this time, since the lock has been released, the first support member 6 and the second support member 7 on both sides will rotate and fold inward around the hinge point of the central connecting ear 10 in sync. The entire box 1 will be flattened and its volume will be greatly reduced, making it easier to store.

[0053] When stacking is required, align the rollers 12 at the bottom of the upper box 1 with the receiving grooves 13 on the cover 11 of the lower box 1, and then put it down. The rollers 12 will be embedded in the receiving grooves 13. This interlocking structure can effectively restrict the horizontal movement of the upper box 1, making the stacking more stable and safe, and less likely to slip or tip over.

[0054] Furthermore, this invention also optimizes the design of the soft material 4 on the side wall of the box 1. Specifically, the upper and lower edges of the soft material 4 are connected to the upper frame 2 and the lower frame 3 respectively, so that the soft material 4 is in a pre-stretched state when the box 1 is unfolded to the use state. The soft material 4 on the side wall of the existing folding storage box only serves a decorative purpose, while the soft material 4 of this invention is not only a soft decoration, but also a tension member of the side wall of the box 1. The soft material 4, together with the first support member 6 and the second support member 7, forms a closed force circuit, thereby improving the bending and torsional stiffness of the box 1.

[0055] Specifically, the tensile strain of the soft material 4 in the pre-stretched state (i.e., when the box 1 is unfolded) is 1% to 15%, and the initial in-plane tensile force of the soft material 4 in the pre-stretched state is 0.5 N / cm to 5 N / cm.

[0056] Specifically, the tensile strain of the soft material 4 in the pre-stretched state (i.e., when the box 1 is unfolded) is 3% to 8%.

[0057] Specifically, the soft material 4 is provided with a reinforcing strip at the corner of the adjacent side wall of the box 1. The upper and lower edges of the reinforcing strip are connected to the upper frame 2 and the lower frame 3 respectively. The reinforcing strip, together with the upper frame 2 and the lower frame 3, forms a circumferential closed constraint to limit out-of-plane bulging and maintain pretension.

[0058] Specifically, elastic elements are provided between the soft material 4 and the first support member 6, and between the soft material 4 and the second support member 7.

[0059] Specifically, the tear strength of soft material 4 is ≥1500N / 5cm, and the water pressure resistance of soft material 4 is ≥5000mmH2O.

[0060] Specifically, the material of the soft material 4 can be polyester coated fabric, PVC coated fabric, PE film or PP film.

[0061] Specifically, the connection between the soft material 4 and the upper frame 2 and the lower frame 3 can take many forms.

[0062] In some embodiments, the upper edge of the soft material 4 is sewn onto the upper frame 2 by a sewing process, and the lower edge of the soft material 4 is sewn onto the lower frame 3 by a sewing process.

[0063] In some embodiments, the upper edge of the soft material 4 is fixedly connected to the upper frame 2 by a hot-melt process, and the lower edge of the soft material 4 is fixedly connected to the lower frame 3 by a hot-melt process.

[0064] In some embodiments, such as Figure 25As shown, multiple buckles 16 are spaced apart on both the upper frame 2 and the lower frame 3. The folding storage box also includes an upper plastic part and a lower plastic part. The upper edge of the soft material 4 is sewn onto the upper plastic part by a sewing process, and the lower edge of the soft material 4 is sewn onto the lower plastic part by a sewing process. Multiple buckles that match and fasten with the buckles 16 are provided on both the upper and lower plastic parts. The soft material 4 can be detachably connected to the side wall of the box body 1 through the cooperation of multiple buckles 16 and buckles.

[0065] In some embodiments, such as Figures 26 to 29 As shown, the outer side walls of the upper frame 2 and the lower frame 3 are both covered with the male or female side of the Velcro 18; correspondingly, the upper and lower edges of the soft material 4 are also fixed with the female or male side of the Velcro 18 through a sewing process, so that the soft material 4 can be detachably wrapped and fixed between the upper frame 2 and the lower frame 3. The soft material 4 is an integrally formed ring structure surrounding the box 1, and its two ends along the length direction are glued together by the sewn Velcro 18 to form a complete side wall of the box 1.

[0066] In some embodiments, such as Figure 30 As shown, multiple mounting posts 19 are spaced apart on both the upper frame 2 and the lower frame 3. The upper and lower edges of the soft material 4 are provided with mounting holes corresponding to the mounting posts 19. During assembly, the mounting holes are fitted onto the corresponding mounting posts 19 to achieve initial positioning and tensioning of the soft material 4. Subsequently, annular pressure strips are installed on both the upper frame 2 and the lower frame 3. The pressure strips press against the edges of the soft material 4 and are inserted into or fixed to the ends of the mounting posts 19, thereby firmly locking the soft material 4 between the upper and lower frames 3.

[0067] In summary, this utility model embodiment provides a folding storage box with at least two support structures. The first support member of each support structure has a first and second connecting rod arranged in a cross configuration, and the second support member has a third and fourth connecting rod arranged in a cross configuration. The first and second support members respectively form two stable triangular support units, greatly enhancing the bending and torsional stiffness of the support structure and significantly strengthening the side wall structure of the box. Compared to existing folding storage boxes with support points scattered at the four corners, this effectively prevents the box from swaying and collapsing. Since the support structure on each side is a rotating connection between the first and second support members, a linkage control of the single-sided support structure is formed. The user only needs to unlock the locking pieces on each support structure to release the relative position lock of the first and second support members. Then, by pulling the upper or lower frame, the synchronous folding or unfolding of each support structure can be achieved, completing the folding or unfolding of the entire box. The folding process is efficient and labor-saving.

[0068] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A folding storage box, characterized in that, include: The box body (1) includes an upper frame (2) and a lower frame (3) arranged at intervals between each other. At least two support structures (5), wherein one of the two support structures (5) is disposed on the first side of the box (1), and the other support structure (5) is disposed on the second side opposite to the first side of the box (1); Each of the aforementioned support structures (5) includes a first support member (6) and a second support member (7). Each of the first support members (6) includes a first connecting rod (61) and a second connecting rod (62) that are cross-fixed. Each of the second support members (7) includes a third connecting rod (71) and a fourth connecting rod (72) that are cross-fixed. The intersection of the first connecting rod (61) and the second connecting rod (62) and the intersection of the third connecting rod (71) and the fourth connecting rod (72) are rotatably connected with the side of the upper frame (2) as the axis of rotation. The ends of the first connecting rod (61) and the second connecting rod (62) are rotatably connected with the upper frame (2), and the ends of the third connecting rod (71) and the fourth connecting rod (72) are rotatably connected with the lower frame (3). A locking element is provided for locking the relative positions of the first support (6) and the second support (7) when the first support (6) and the second support (7) are rotated to 180 degrees.

2. A folding storage box according to claim 1, characterized in that, The first support member (6) is provided with a first slide groove (63), and the second support member (7) is provided with a second slide groove (73) communicating with the first slide groove (63). The locking member includes a slider (8), which is slidably disposed in the first slide groove (63) or the second slide groove (73). When the first support member (6) and the second support member (7) rotate to 180 degrees, one end of the slider (8) is located in the first slide groove (63), and the other end of the slider (8) is located in the second slide groove (73). The slider (8) is also provided with a locking part, which is used to lock the position of the slider (8).

3. A folding storage box according to claim 2, characterized in that, The slider (8) includes a body (81), and the locking part is an elastic block (811) disposed on the body (81). The first groove (63) or the second groove (73) has a first locking groove (631) and a second locking groove (632) that match the elastic locking block (811) on its groove wall.

4. A folding storage box according to claim 3, characterized in that, The width of the elastic card block (811) is smaller than the width of the body (81); The first locking groove (631) and the second locking groove (632) are spaced apart on the side wall of the first sliding groove (63) along the length direction of the first sliding groove (63).

5. A folding storage box according to claim 4, characterized in that, The main body (81) has a sliding block (812) on the side wall opposite to the side wall where the elastic locking block (811) is provided, and the first sliding groove (63) has a sliding groove (633) on the side wall opposite to the side wall where the first locking groove (631) and the second locking groove (632) are provided. When the elastic block (811) is locked in the first locking groove (631), the sliding block (812) abuts against one wall of the sliding groove (633) along its length. When the elastic block (811) is locked in the second locking groove (632), the sliding block (812) abuts against another wall of the sliding groove (633) along its length.

6. A folding storage box according to claim 3, characterized in that, The bottom of the first groove (63) and / or the second groove (73) is provided with friction strips (9).

7. A folding storage box according to claim 1, characterized in that, The box body (1) is also provided with a box cover (11), which is detachably connected to the upper frame (2).

8. A folding storage box according to claim 7, characterized in that, The bottom of the lower frame (3) is equipped with multiple rollers (12), and the box cover (11) is provided with receiving grooves (13) that match each of the rollers (12).

9. A folding storage box according to claim 7, characterized in that, The box cover (11) is also provided with a functional slot (14), and the functional slot (14) is provided with a slot cover (15).

10. A folding storage box according to claim 1, characterized in that, Each side wall of the box (1) is covered with soft material (4).

11. A folding storage box according to claim 10, characterized in that, The upper and lower edges of the soft material (4) are connected to the upper frame (2) and the lower frame (3) respectively, so that the soft material (4) is in a pre-stretched state when the box (1) is unfolded to the use state.

12. A folding storage box according to claim 11, characterized in that, The soft material (4) has a tensile strain of 1% to 15% in the pre-stretched state, and the soft material (4) has an initial in-plane tensile force of 0.5 N / cm to 5 N / cm in the pre-stretched state.

13. A folding storage box according to claim 12, characterized in that, The tensile strain of the soft material (4) in the pre-stretched state is 3% to 8%.

14. A folding storage box according to claim 11, characterized in that, The soft material (4) is provided with a reinforcing strip at the corner of the adjacent side wall of the box (1), and the upper and lower edges of the reinforcing strip are respectively connected to the upper frame (2) and the lower frame (3).

15. A folding storage box according to claim 11, characterized in that, The tear strength of the soft material (4) is ≥1500N / 5cm, and the water pressure resistance of the soft material (4) is ≥5000mmH2O.

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