Folding commodity shelf

Abstract

The utility model discloses a folding commodity shelf which comprises a support body and at least one cloth layer which is arranged on the support body and used for placing articles, and the support body comprises two side frames which are oppositely arranged left and right and a first folding connecting mechanism which is connected between the two side frames. The first folding connecting mechanism is used for being in linkage with the two side frames to be mutually unfolded or folded in the left-right direction, each side frame comprises two stand columns arranged in the front-back direction and a second folding connecting mechanism connected between the two stand columns, and the second folding connecting mechanism is used for being in linkage with the two stand columns to be mutually unfolded or folded in the front-back direction. According to the foldable storage rack, the whole folding of the support body can be achieved by folding the two stand columns, the size of the storage rack is reduced, the storage rack is convenient to store, carry and transport, the folding mode is convenient for a user to control, and the folding and unfolding efficiency is high.

Description

Technical Field

[0001] This utility model relates to a storage rack, and more particularly to a folding storage rack. Background Technology

[0002] Shelves are devices used in daily life to place / store items. They are often used outdoors or indoors. Existing shelves generally have one or more layers. By placing items on the shelves, the space utilization rate is improved.

[0003] Existing storage racks consist of a frame-shaped support and multiple shelves supported on the support. The support is usually connected as one piece by welding, riveting, or threaded connection, and the shelves are fixed to the support and cannot be removed. This type of storage rack has a fixed shape that cannot be changed and cannot be disassembled. It requires a lot of space when storing or transporting, resulting in high transportation costs and inconvenience when carrying.

[0004] To address the aforementioned issues, modular shelving units have emerged on the market, such as the shelving unit disclosed in patent CN2356561Y. This unit includes at least two lattice-shaped shelving units and multiple uprights supporting the units. Each upright is composed of at least two branch pipes connected by pipe fittings. Each branch pipe has internal threads at both ends for connection to the pipe fittings, which are hollow externally threaded round pipes. This structure allows the shelving unit to be disassembled into individual pipes and uprights, facilitating carrying and transportation.

[0005] The aforementioned modular shelving unit has the problem that the various tubes are connected by pipe joints, requiring each tube to be unscrewed during transport or storage, making disassembly and assembly cumbersome and inconvenient. Utility Model Content

[0006] Based on the problem that the various tubes in the above-mentioned modular storage rack are connected by tube joints, and need to be unscrewed one by one when carrying, transporting or storing, which is cumbersome to assemble and disassemble and inconvenient to use, this utility model provides a folding storage rack.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a folding shelf, including a support body and at least one layer of cloth for placing items disposed on the support body. The support body includes two side frames arranged opposite each other on the left and right sides and a first folding connecting mechanism connected between the two side frames. The first folding connecting mechanism is used to drive the two side frames to unfold or fold together in the left and right direction. Each side frame includes two uprights arranged front and rear and a second folding connecting mechanism connected between the two uprights. The second folding connecting mechanism is used to drive the two uprights to unfold or fold together in the front and rear direction. The first folding connecting mechanism is connected between the two opposite uprights on the left and right sides. A movable seat is slidably sleeved on the upright. The first folding connecting mechanism includes at least one set of first folding units. The first folding unit includes two intersecting first connecting rods, which are hinged at the intersection. In the first folding unit connected to the column, the end of one first connecting rod is hinged to the movable seat, and the end of the other first connecting rod is hinged to the column. The second folding connection mechanism includes at least one set of second folding units, each including two intersecting second connecting rods, which are hinged at the intersection. In the second folding unit connected to the column, the end of one second connecting rod is hinged to the movable seat, and the end of the other second connecting rod is hinged to the column. The first folding unit and the second folding unit connected to the same column are hinged to the same movable seat. The fabric layer is connected to each column and is stretched and tightened by the columns. The fabric layer can deform and shrink as each column is closed.

[0008] A further preferred embodiment of this utility model is as follows: the first folding connecting mechanism, the second folding connecting mechanism, and one of the fabric layers are combined to form a storage compartment with an opening at the top, the fabric layer serves as the bottom of the storage compartment, and the first folding connecting mechanism and the second folding connecting mechanism serve as the side railings of the storage compartment.

[0009] A further preferred embodiment of this utility model is as follows: the fabric layer includes a lower fabric layer connected to the lower end of the column; the movable seat is located in the middle of the column; in the first folding unit connected to the column, the upper end of one first connecting rod is hinged to the movable seat, and the lower end of the other first connecting rod is hinged to the lower end of the column; in the second folding unit connected to the column, the upper end of one second connecting rod is hinged to the movable seat, and the lower end of the other second connecting rod is hinged to the column; the lower fabric layer, the first folding connecting mechanism, and the second folding connecting mechanism combine to form a storage compartment located at the bottom.

[0010] A further preferred embodiment of this utility model is as follows: the column includes a column body and a base fixedly installed at the lower end of the column body, the lower end of a first connecting rod in the first folding unit connected to the column is hinged to the base, and the lower end of a second connecting rod in the second folding unit connected to the column is hinged to the base.

[0011] A further preferred technical solution of this utility model is: an elastic C-shaped fastener is connected to the lower fabric layer, and the C-shaped fastener can be plugged and unplugged onto the column.

[0012] A further preferred embodiment of this utility model is as follows: the fabric layer includes an upper fabric layer and an intermediate fabric layer. The upper fabric layer is fixedly connected to the upper end of each column, and the intermediate fabric layer is slidably fitted onto the column. The upper fabric layer and the intermediate fabric layer are connected by an intermediate connector.

[0013] A further preferred embodiment of this utility model is that the intermediate connecting member is a strip of cloth.

[0014] A further preferred embodiment of this utility model is as follows: the upper fabric layer is fixedly connected to the upper end of the column through a connecting assembly. The connecting assembly includes a first fastening screw, a second fastening screw, an upper connecting member located above the upper fabric layer, and a lower connecting member located below the upper fabric layer. The lower end of the lower connecting member is provided with a slot, the upper end of the column is inserted into the slot, and is fixedly connected to the lower connecting member through the first fastening screw. The upper end of the lower connecting member is provided with a column groove and a positioning groove located on one side of the column groove. The column groove and the slot are connected through a connecting hole. The upper connecting member is provided with a post inserted into the column groove and a positioning block inserted into the positioning groove. The upper fabric layer is provided with a through hole for the post and the positioning block to pass through. The second fastening screw passes through the connecting hole from the slot and connects to the post. The upper connecting member and the lower connecting member are sandwiched between the upper and lower sides of the upper fabric layer and fixed to the upper fabric layer.

[0015] A further preferred technical solution of this utility model is as follows: the first folding connection mechanism includes two sets of first folding units, which are arranged left and right. The two ends of the left first folding unit are respectively hinged to the left column and the movable seat on the column. The two ends of the left first folding unit are respectively hinged to the two ends of the right first folding unit. The two ends of the right first folding unit are respectively hinged to the right column and the movable seat on the column.

[0016] A further preferred technical solution of this utility model is as follows: the second folding connection mechanism includes a set of second folding units, one end of a second connecting rod is hinged to the movable seat on the front column, and the other end is hinged to the rear column, and one end of another second connecting rod is hinged to the front column, and the other end is hinged to the movable seat on the rear column.

[0017] Compared with the prior art, the advantages of this utility model are that a first folding connecting mechanism is set between the two side frames, which drives the two side frames to unfold or fold in the left and right direction. The side frame includes two uprights set at the front and back, and a second folding connecting mechanism is set between the two uprights. The second folding connecting mechanism drives the two uprights to unfold or fold in the front and back direction, so that the main body of the bracket can be directly folded through the first and second folding connecting mechanisms to reduce the volume, facilitate the transportation, carrying and storage of the shelf, and eliminate the need to disassemble the shelf. It is easy to operate. Moreover, since the first folding unit and the second folding unit connected to the same upright are hinged on the same movable seat, when two of the uprights fold in each other, they can drive the other uprights to fold in sync, which is more convenient for users to operate and has high folding and unfolding efficiency.

[0018] By setting up cloth layers to place items, the cloth layers can deform and retract as each column is closed, so that the cloth layers will not affect the closure of the columns. There is no need to remove the cloth layers when closing; you only need to retract each column when closing, making operation simpler. Attached Figure Description

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0020] Figure 1 This is a diagram showing the shelf in its unfolded state.

[0021] Figure 2 This is a cross-sectional view of the shelf in its unfolded state.

[0022] Figure 3 for Figure 2 Enlarged view of a portion at point A;

[0023] Figure 4 A structural schematic diagram of the support structure in its unfolded state;

[0024] Figure 5 A schematic diagram showing the connection between the two columns by the first folding connecting mechanism;

[0025] Figure 6 This is a schematic diagram of the side frame structure;

[0026] Figure 7 This is a schematic diagram of the lower layer structure;

[0027] Figure 8This is a breakdown diagram of the upper layer, middle layer, and connecting components.

[0028] Figure 9 This is a schematic diagram of the structure of the support body in its retracted state.

[0029] In the diagram: 1. Main body of the support frame; 2. Side frame; 3. First folding connecting mechanism; 4. Lower fabric layer; 5. Storage compartment; 6. Middle fabric layer; 7. Upper fabric layer; 8. Middle connector; 9. Column; 10. Upper connector; 11. Insert column; 12. Through hole; 13. Lower connector; 14. Column groove; 15. Connecting hole; 16. Slot; 17. Second fastening screw; 18. First fastening screw; 19. First folding unit; 20. Second folding unit; 21. Second folding connecting mechanism; 22. Movable seat; 23. Base; 24. First connecting rod; 25. Column; 26. Second connecting rod; 27. C-shaped buckle; 28. Sleeve hole; 29. ​​Positioning groove. Detailed Implementation

[0030] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0031] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0032] Figures 1-9 As shown, the folding shelf includes a support body 1 and at least one layer of cloth for placing items on the support body 1. The cloth is stretched and tightened by the support body 1 in the unfolded state, so that items can be placed on the cloth.

[0033] Figure 1 , Figure 4As shown, the main body 1 of the support includes two side frames 2 arranged opposite to each other on the left and right, and a first folding connecting mechanism 3 connected between the two side frames 2. The first folding connecting mechanism 3 is used to drive the two side frames 2 to unfold or fold together in the left and right direction. The side frame 2 includes two uprights 9 arranged front and rear, and a second folding connecting mechanism 21 connected between the two uprights 9. The second folding connecting mechanism 21 is used to drive the two uprights 9 to unfold or fold together in the front and rear direction. The first folding connecting mechanism 3 is connected between the two opposite uprights 9 on the left and right sides. The uprights 9 are provided with movable seats 22 for connecting with the first folding connecting mechanism 3 and / or the second folding connecting mechanism 21. The movable seats 22 are slidably sleeved on the uprights 9. The first folding connecting mechanism 3 includes at least one set of first folding units 19. The first folding unit 19 includes two first connecting rods 24. The two first connecting rods 24 are arranged crosswise and hinged at the intersection point. The two first connecting rods 24 can rotate relative to each other around the hinge point so that the two upper ends and the two lower ends move closer together or separate. In the first folding unit 19 connected to the column 9, the end of one first connecting rod 24 is hinged to the movable seat 22 on the column 9, and the end of the other first connecting rod 24 is hinged to the column 9. The second folding connection mechanism 21 includes at least one set of second folding units 20. The second folding unit 20 includes two second connecting rods 26, which are arranged crosswise and hinged at the intersection point. The two second connecting rods 26 can rotate relative to each other around the hinge point at the intersection point so that the two upper ends and the two lower ends move closer together. Alternatively, the ends of the second connecting rods 26 in the second folding unit 20 connected to the column 9 are hinged to the movable seat 22 on the column 9, and the ends of the other second connecting rods 26 are hinged to the column 9. The first folding unit 19 and the second folding unit 20 connected to the same column 9 are hinged to the same movable seat 22, so that the first folding connecting mechanism 3 and the second folding connecting mechanism 21 are linked. The fabric layer is connected to each column 9 and is stretched and tightened by the column 9. The fabric layer can deform and shrink as each column 9 is closed.

[0034] This patent features a first folding connecting mechanism 3 between two side frames 2 arranged on the left and right sides. This mechanism allows the two side frames 2 to unfold or fold together in the left-right direction. Each side frame 2 includes two uprights 9 arranged front and back, with a second folding connecting structure 21 between them. This second folding connecting mechanism 21 allows the two uprights 9 to unfold or fold together in the front-back direction. This allows the folding shelf to fold inwards when needed for transport or storage, and also to fold inwards the front and back uprights 9 of each side frame 2, thereby reducing the folding distance. The overall size of the shelf is designed to facilitate transportation, carrying, and storage without disassembling it. It is easy to operate. Since the first folding unit 19 and the second folding unit 20, which are connected to the same upright 9, are hinged to the same movable seat 22, the first folding unit 19 and the second folding unit 20 are linked to each other. When the two side frames 2 are folded, the front and rear uprights 9 of the two side frames 2 also fold simultaneously. When the user folds the shelf, he only needs to bring two of the uprights 9 together to complete the overall folding of the shelf, which is more convenient for the user to operate and has high folding and unfolding efficiency.

[0035] In addition, this patent uses a tensioned fabric layer to place items. Because the fabric layer is flexible, it can deform and retract as each column 9 is closed, so that the fabric layer will not affect the closure of the column 9. There is no need to remove the fabric layer when closing. When closing, you only need to retract each column 9, making the operation simpler.

[0036] Since there are two sets of left and right opposite columns 9 in the main body 1 of the support, the first folding connection mechanism 3 for linkage can be provided between both sets of left and right opposite columns 9, or the first folding connection mechanism 3 for linkage can be provided only between one set of left and right opposite columns 9.

[0037] This patent does not limit the number of first folding units 19 included in the first folding connecting mechanism 3. The first folding units 19 can be one set or multiple sets, and the number of first folding units 19 can be set according to the size of the required shelf.

[0038] Figure 5 As shown, preferably, the first folding connection mechanism 3 includes two sets of first folding units 19, which are arranged left and right, and are hinged to each other. The first folding unit 19 on the left is hinged to the left column 9 and the movable seat 22 on the left column 9, and the first folding unit 19 on the right is hinged to the right column 9 and the movable seat 22 on the right column 9.

[0039] Specifically, the two ends of the left first folding unit 19 are hinged to the left column 9 and the movable seat 22 on the left column 9, respectively. The two ends of the left first folding unit 19 are hinged to the two ends of the right first folding unit 19 on the left, respectively. The two ends of the right first folding unit 19 are hinged to the right column 9 and the movable seat 22 on the column 9, respectively.

[0040] This patent does not limit the number of second folding units 20 included in the second folding connecting mechanism 21. The second folding units 20 can be one set or multiple sets, and the number of second folding units 20 can be set according to the size of the required shelf.

[0041] Figure 6 As shown, preferably, the second folding connection mechanism 21 includes a set of second folding units 20. The front side of the second folding unit 20 is hinged to the column 9 and the movable seat 22 on the column 9 on the front side, and the rear side of the second folding unit 20 is hinged to the column 9 and the movable seat 22 on the column 9 on the rear side.

[0042] Specifically, one end of a second connecting rod 26 in the second folding unit 20 is hinged to the movable seat 22 on the front column 9, and the other end is hinged to the rear column 9. One end of another second connecting rod 26 is hinged to the front column 9, and the other end is hinged to the movable seat 22 on the rear column 9.

[0043] The first folding connecting mechanism 3, the second folding connecting mechanism 21, and one of the fabric layers combine to form a storage compartment 5 with an opening at the top. The fabric layer serves as the bottom of the storage compartment 5, and the first folding connecting mechanism 3 and the second folding connecting mechanism 21 serve as the side railings of the storage compartment 5. This structure allows items placed on the fabric layer to be limited by the first folding connecting mechanism 3 and the second folding connecting mechanism 21, preventing items from moving out of the fabric layer from all sides.

[0044] Figure 4 As shown, preferably, the fabric layer includes a lower fabric layer 4, which is connected to the lower end of the column 9. The movable seat 22 is located in the middle of the column 9 and can slide up and down along the column 9. In the first folding unit 19 connected to the column 9, the upper end of one first connecting rod 24 is hinged to the movable seat 22, and the lower end of the other first connecting rod 24 is hinged to the lower end of the column 9. In the second folding unit 20 connected to the column 9, the upper end of one second connecting rod 26 is hinged to the movable seat 22, and the lower end of the other second connecting rod 26 is hinged to the column 9. The lower fabric layer 4, the first folding connecting mechanism 3, and the second folding connecting mechanism 21 are combined to form the storage compartment 5 located at the bottom of the shelf.

[0045] Preferably, the column 9 includes a column body 25 and a base 23 fixedly installed at the lower end of the column body 25. The lower end of a first connecting rod 24 in the first folding unit 19 connected to the column 9 is hinged to the base 23, and the lower end of a second connecting rod 26 in the second folding unit 20 connected to the column 9 is hinged to the base 23. The base 23 is inserted into the lower end of the column 9 and then fixed by bolts.

[0046] The upright column 9 is divided into a base 23 and a column body 25, which are connected to facilitate the processing and shaping of the upright column 9. In addition, the upright column 9 can also be made of different materials according to the functional requirements of each part. The base 23 is used to contact the ground and needs to be wear-resistant and non-slip. It is also used to hinge with the connecting rod. Its shape needs to be easy to process. The base 23 is made of wear-resistant plastic material, and the contact area between the lower surface of the base 23 and the ground can be increased, so that the base 23 can support more stably. Anti-slip texture is set on the bottom surface of the base 23 to give the base 23 good anti-slip performance. The plastic material of the base 23 is easy to process into a structure for hinge with the connecting rod. The column body 25 is the skeleton and needs good strength. The column body 25 can be made of metal material to improve the overall strength of the shelf.

[0047] Figure 7 As shown, the lower fabric layer 4 is connected to an elastic C-shaped fastener 27. The C-shaped fastener 27 can be plugged and unplugged onto the column 9. The C-shaped fastener 27 facilitates the connection of the lower fabric layer 4 to the support body 1, and also facilitates the removal of the lower fabric layer 4 from the support body 1, making it convenient to remove and wash the lower fabric layer 4.

[0048] When the C-shaped buckle 27 is fastened to the column 9, it rests against the base 23, and the base 23 supports the C-shaped buckle 27.

[0049] The aforementioned fabric layer also includes an upper fabric layer 7 and an intermediate fabric layer 6. The upper fabric layer 7 is fixedly connected to the upper end of each column 9, and the intermediate fabric layer 6 is slidably fitted onto the column 9. The upper fabric layer 7 and the intermediate fabric layer 6 are connected by an intermediate connector 8. This structure allows the installation of the intermediate fabric layer 6 to be completed after the upper fabric layer 7 is connected to the support body 1, eliminating the need for a connecting structure between the intermediate fabric layer 6 and the support body 1, thus simplifying the overall structure. The intermediate fabric layer 6 has a sleeve hole 28 for the column 9 to pass through.

[0050] Preferably, the intermediate connector 8 is a strip of cloth. Other flexible connectors, such as ropes, can also be used.

[0051] Figure 1 , Figure 8 As shown, the middle fabric layer 6 can be set in multiple layers. Adjacent middle fabric layers 6 are connected by a middle connector 8, and the uppermost middle fabric layer 6 is connected to the upper fabric layer 7 by a middle connector 8.

[0052] Figure 2 , Figure 3 , Figure 8 As shown, specifically, the upper fabric layer 7 is fixedly connected to the upper end of the column 9 via a connecting assembly. The connecting assembly includes a first fastening screw 18, a second fastening screw 17, an upper connecting member 10 located above the upper fabric layer 7, and a lower connecting member 13 located below the upper fabric layer 7. The lower end of the lower connecting member 13 is provided with a slot 16, and the upper end of the column 9 is inserted into the slot 16 and fixedly connected to the lower connecting member 13 via the first fastening screw 18. The upper end of the lower connecting member 13 is provided with a column groove 14 and a position... A positioning groove 29 is located on one side of the column groove 14. The column groove 14 and the slot 16 are connected by a connecting hole 15. The upper connector 10 is provided with a post 11 inserted into the column groove 14 and a positioning block inserted into the positioning groove 29. The upper fabric layer 7 is provided with a through hole 12 for the post 11 and the positioning block to pass through. The second fastening screw 17 passes through the connecting hole 15 from the slot 16 and connects to the post 11. The upper connector 10 and the lower connector 13 are clamped on the upper and lower sides of the upper fabric layer 7 and fixed to the upper fabric layer 7. The upper fabric layer 7, the connecting assembly, and the middle fabric layer 6 can be removed from the column 9 by unscrewing the first fastening screw 18.

[0053] The positioning block inserted into the positioning groove 29 can restrict the relative rotation of the upper connector 10 and the lower connector 13.

[0054] Figure 4 , Figure 9As shown, when the shelf needs to be folded, hold the two opposing uprights 9 with both hands and bring them together. During this process, the two intersecting first connecting rods 24 in the first folding unit 19 rotate relative to each other around their intersection point, causing their upper ends to move together. This causes the movable seat 22, hinged to the upper end of the first connecting rod 24, to move upwards along the uprights 9. The upward movement of the movable seat 22 also causes the upper end of the second connecting rod 26, hinged to the movable seat 22, to move upwards. This upward movement of the upper end of the second connecting rod 26 causes the two intersecting second connecting rods 26 in the second folding unit 20 to rotate relative to their intersection point, bringing their upper ends together. This causes the front and rear uprights 9 in the side frame 2 to move together, ultimately achieving the overall folding of the shelf. During the folding process, the fabric layers deform and fold together along with the uprights 9. When it is necessary to... When the shelf is unfolded, hold the two opposing uprights 9 with both hands and separate them to the left and right. As the two uprights 9 move away from each other, the two intersecting first connecting rods 24 in the first folding unit 19 rotate relative to each other around the intersection point, causing the upper ends of the two intersecting first connecting rods 24 to move away from each other. This causes the movable seat 22, which is hinged to the upper end of the first connecting rod 24, to move downward along the uprights 9. The downward movement of the movable seat 22 causes the upper end of the second connecting rod 26, which is hinged to the movable seat 22, to move downward. The downward movement of the upper end of the second connecting rod 26 causes the two intersecting second connecting rods 26 in the second folding unit 20 to rotate relative to the intersection point, causing the upper ends of the two intersecting second connecting rods 26 to move away from each other. This causes the front and rear uprights 9 in the side frame 2 to move away from each other, ultimately realizing the unfolding of the shelf. During the unfolding process, the fabric layer of the shelf is stretched out as the uprights 9 move away from each other and is eventually tensioned for placing items.

[0055] Preferably, the fabric layer is made of Oxford cloth.

[0056] The folding storage rack provided by this utility model has been described above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand this utility model and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from its principle, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A folding storage rack, characterized in that, The system includes a support body and at least one layer of fabric for placing items on the support body. The support body includes two side frames arranged opposite each other and a first folding connecting mechanism connecting the two side frames. The first folding connecting mechanism is used to connect the two side frames to unfold or fold in the left-right direction. Each side frame includes two uprights arranged front and rear and a second folding connecting mechanism connecting the two uprights to unfold or fold in the front-back direction. The first folding connecting mechanism is connected between the two opposite uprights on the left and right sides. Movable seats are slidably fitted on the uprights. The first folding connecting mechanism includes at least one set of first folding units, and each first folding unit includes two cross-arranged... The first connecting rod consists of two first connecting rods hinged at their intersection. In the first folding unit connected to the column, the end of one first connecting rod is hinged to the movable seat, and the end of the other first connecting rod is hinged to the column. The second folding connection mechanism includes at least one set of second folding units. Each second folding unit includes two intersecting second connecting rods hinged at their intersection. In the second folding unit connected to the column, the end of one second connecting rod is hinged to the movable seat, and the end of the other second connecting rod is hinged to the column. The first folding unit and the second folding unit connected to the same column are hinged to the same movable seat. The fabric layer is connected to each column and is stretched and tightened by the columns. The fabric layer can deform and shrink as each column is closed.

2. The folding storage rack according to claim 1, characterized in that, The first folding connection mechanism, the second folding connection mechanism, and one of the fabric layers are combined to form a storage compartment with an opening at the top. The fabric layer serves as the bottom of the storage compartment, and the first folding connection mechanism and the second folding connection mechanism serve as the side railings of the storage compartment.

3. The folding storage rack according to claim 2, characterized in that, The fabric layer includes a lower fabric layer connected to the lower end of the column. The movable seat is located in the middle of the column. In the first folding unit connected to the column, the upper end of one first connecting rod is hinged to the movable seat, and the lower end of the other first connecting rod is hinged to the lower end of the column. In the second folding unit connected to the column, the upper end of one second connecting rod is hinged to the movable seat, and the lower end of the other second connecting rod is hinged to the column. The lower fabric layer, the first folding connecting mechanism, and the second folding connecting mechanism are combined to form a storage compartment located at the bottom.

4. The folding storage rack according to claim 3, characterized in that, The column includes a column body and a base fixedly installed at the lower end of the column body. The lower end of a first connecting rod in the first folding unit connected to the column is hinged to the base, and the lower end of a second connecting rod in the second folding unit connected to the column is hinged to the base.

5. The folding storage rack according to claim 3, characterized in that, The lower fabric layer is connected to an elastic C-shaped fastener, which can be plugged into and fastened to the column.

6. The folding storage rack according to claim 1, characterized in that, The fabric layer includes an upper fabric layer and a middle fabric layer. The upper fabric layer is fixedly connected to the upper end of each column, and the middle fabric layer is slidably fitted onto the column. The upper fabric layer and the middle fabric layer are connected by an intermediate connector.

7. The folding storage rack according to claim 6, characterized in that, The intermediate connector is a strip of cloth.

8. The folding storage rack according to claim 6, characterized in that, The upper fabric layer is fixedly connected to the upper end of the column via a connecting assembly. The connecting assembly includes a first fastening screw, a second fastening screw, an upper connecting piece located above the upper fabric layer, and a lower connecting piece located below the upper fabric layer. The lower end of the lower connecting piece has a slot, into which the upper end of the column is inserted and fixedly connected to the lower connecting piece by the first fastening screw. The upper end of the lower connecting piece has a column groove and a positioning groove located on one side of the column groove. The column groove and the slot are connected by a connecting hole. The upper connecting piece has a post inserted into the column groove and a positioning block inserted into the positioning groove. The upper fabric layer has a through hole for the post and positioning block to pass through. The second fastening screw passes through the connecting hole from the slot and connects to the post. The upper connecting piece and the lower connecting piece are sandwiched between the upper and lower sides of the upper fabric layer and fixed to the upper fabric layer.

9. The folding storage rack according to claim 1, characterized in that, The first folding connection mechanism includes two sets of first folding units, which are arranged left and right. The two ends of the left first folding unit are respectively hinged to the left column and the movable seat on the column. The two ends of the left first folding unit are respectively hinged to the two ends of the right first folding unit on the left. The two ends of the right first folding unit are respectively hinged to the right column and the movable seat on the column.

10. The folding storage rack according to claim 1, characterized in that, The second folding connection mechanism includes a set of second folding units. One end of a second link is hinged to a movable seat on the front column, and the other end is hinged to a rear column. One end of another second link is hinged to the front column, and the other end is hinged to a movable seat on the rear column.

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