A two-way folding shelf
By incorporating a two-way folding assembly, support legs, and a soft, non-slip silicone layer, the design solves the problems of limited folding methods and insufficient stability in existing folding shelves, achieving both flexible folding and improved item safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 金岳(山东)金属制品有限公司
- Filing Date
- 2025-06-16
- Publication Date
- 2026-06-19
AI Technical Summary
Existing folding shelves cannot be folded in both directions, cannot be folded according to the size and height of the space, cannot enhance the friction between items and shelves, cannot provide protection when fragile items are accidentally tipped over, and cannot stably support the shelves.
The design incorporates a bi-directional folding assembly, a foot assembly, and a soft, non-slip silicone layer, enabling both longitudinal and lateral folding. The foot assembly provides removable or fixed support, while the soft, non-slip silicone layer enhances friction and provides protection.
It allows for flexible folding based on space size and height, enhancing the safety and stability of items, minimizing storage space, and improving the safety factor of items.
Smart Images
Figure CN224369353U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of household goods technology, and in particular to a two-way folding storage rack. Background Technology
[0002] Folding shelves are a type of storage rack that can be folded up when not in use, saving space. Folding shelves are usually lightweight and easy to move around. They are mainly used in situations where efficient storage and space saving are required, and are suitable for rooms such as bedrooms, living rooms, kitchens, and offices. Their applications are very wide. However, existing folding shelves cannot utilize bi-directional folding components. They cannot adjust the size and height of the space by stacking one frame upwards to shorten the width and increase the height, or by folding the shelf vertically to reduce the height and increase the width. They cannot perform bi-directional folding (vertical and horizontal folding) for storage, thus failing to minimize storage space. They also cannot use support legs, meaning the shelves cannot be easily moved by releasing the legs' brakes, nor can they be securely fixed by pressing down the legs' brakes. Furthermore, they cannot use soft silicone layers, which cannot enhance the friction between items and shelves, effectively protecting against accidental slippage. They also cannot protect fragile items from accidental tipping over with soft, non-slip silicone, thus failing to improve the safety of stored items.
[0003] Patent No. ZL202320425685.9 discloses a "structure of a folding shelf unit". This utility model includes a double-folded shelf, uprights, and a sleeve. The inner beveled hole of the sleeve of the double-folded shelf connects to the outer beveled surface of the sleeve, and the fan-shaped surface and fan-shaped protruding ring of the sleeve are respectively connected to the vertical tube and circular groove of the upright. Its advantages are: flat packaging, ready to use when unfolded, and detachable when needed; the bi-directional folding reduces the destructive force of the levers, and the gaps in the middle of the shelf are small.
[0004] Patent No. ZL202421806575.8 discloses a "foldable protective frame and shelf". This utility model includes a fixed rod and movable rods located at both ends of the fixed rod. Each movable rod has a first rotating member at one end and facing the other movable rod; each movable rod also has a first limiting member at the other end. A second rotating member is hinged to each end of the fixed rod corresponding to the first rotating member, and a second limiting member is detachably connected to each end of the fixed rod corresponding to the first limiting member. When the first and second limiting members are installed together, the protective frame is in an open state; when the first and second limiting members are detached, the protective frame is in a folded state. This utility model reduces the packaging volume of the protective frame by detaching each first limiting member relative to the second limiting member and then rotating each first rotating member relative to the second rotating member, thus pressing each movable rod tightly against the fixed rod to complete the folding. This facilitates transportation and reduces transportation costs. Summary of the Invention
[0005] To address the aforementioned technical problems, this utility model provides a bi-directional folding storage rack, comprising a bi-directional folding assembly, a support leg assembly, a soft, non-slip silicone layer, a frame, and shelves. It allows for flexible storage by stacking one frame upwards to shorten the width and increase the height, or by folding the rack vertically to reduce the height and increase the width, depending on the size and height of the space. The rack can be folded bi-directionally (vertically and laterally) for storage, minimizing storage space. When moving the rack, releasing the brake on the support leg assembly allows for easy movement; when fixing the rack, pressing down the brake on the support leg assembly provides stable support. The increased friction between items and shelves effectively protects against accidental slippage. The soft, non-slip silicone layer protects fragile items from accidental tipping, enhancing the safety of stored items and effectively solving the aforementioned technical problems.
[0006] To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problem is as follows:
[0007] The aforementioned bi-directional folding storage rack includes a bi-directional folding assembly, a support leg assembly, and a frame, characterized in that...
[0008] The bidirectional folding assembly includes a longitudinal folding unit and a transverse folding unit. The longitudinal folding unit includes a joint, which includes a bearing, a central shaft I, a bushing I, a bushing II, a connecting seat I, and a connecting seat II. A limit block is provided at a preset position on the outer side of the connecting seat II. The rotation angle of the central shaft I is set to 0° to 180°. When the rotation angle of the central shaft I is 0°, the positions of the connecting seat I and the connecting seat II are symmetrical front and back. When the rotation angle of the central shaft I is 180°, the limit block plays a role in limiting the position of the connecting seat I and the connecting seat II. The positions of the connecting seat I and the connecting seat II are symmetrical vertically. The transverse folding unit includes a U-shaped groove. Through holes are symmetrically opened at the center positions of the two side walls of the U-shaped groove, and the central shaft II is hinged to the two through holes.
[0009] The support assembly includes a connecting part, a rubber support, a nylon wheel, and a brake plate. By lifting the brake plate, the rubber support is simultaneously lifted off the ground, which releases the brake on the nylon wheel. By pressing down the brake plate, the rubber support supports the ground, which brakes the nylon wheel, thus achieving the purpose of convenient movement and stable placement.
[0010] The frame is configured as a cuboid structure, and each frame includes 2 uprights, 2 L-shaped outer frames, 2 horizontal bars I, 2 vertical bars, 1 horizontal bar II, and a predetermined number of horizontal bars III. The uprights and L-shaped outer frames are configured as square tubular structures, and the horizontal bars I, II, and III are configured as circular tubular structures with equal outer diameters.
[0011] It also includes shelves, the size of which matches the cross-sectional size of the frame. The upper surface of the shelves is provided with a soft, non-slip silicone layer. Two support members are symmetrically arranged laterally on the left and right side walls of the shelves. Each support member includes a support part, which is configured as an arc-shaped structure with an opening facing downwards. The inner wall of the support part matches the outer diameter of the crossbar II. The number of shelves is set to a preset number.
[0012] Two columns are fixedly connected to horizontal bars I at their upper and lower ends respectively. U-shaped slots are fixedly provided on the front side of the upper and lower ends of the columns. The opening directions of the two matching U-shaped slots are set to be symmetrical inward. The short rod of the L-shaped outer frame is set as a horizontal arm. The front end of the horizontal arm is fixedly connected to the central axis II of the lower U-shaped slot. The long rod of the L-shaped outer frame is set as a vertical arm. The vertical arm is fixedly connected to the central axis II of the upper U-shaped slot through the horizontal bar II. The rear end of the horizontal arm is fixedly connected to the rear end of the horizontal bar II. A predetermined number of horizontal bars III are fixedly connected between the vertical bar and the vertical arm. The distance between the horizontal bar II and the upper horizontal bar III is equal to the distance between two adjacent horizontal bars III. The distance between two adjacent horizontal bars III is equal to the distance between the upper horizontal bar III and the horizontal arm.
[0013] The number of frames is set to 2, and the two frames are set to a back-to-back column structure. The upper port of the column of the front frame is fixedly connected to the connecting seat I, and the upper port of the corresponding column of the rear frame is fixedly connected to the connecting seat II. The lower front end of the cross arm of the front frame is fixedly connected to the connecting part of the support assembly, and the lower rear end of the cross arm of the rear frame is fixedly connected to the connecting part of the support assembly.
[0014] It also includes a support and fixing unit, which includes a support member, a fixing member, and a hand-tightening screw I. The size of the support member matches the size of the upper port of the vertical arm. The end face of the support member is fixedly connected to the upper port of the vertical arm. The other end face of the support member is set as an arc-shaped structure. The fixing member is set as a cylindrical structure. A threaded through hole I is opened at the center of the shaft of the fixing member. The length of the fixing member is equal to half the length of the support member. The fixing member is horizontally fixed in the arc-shaped structure of the support member. The fixing member of the front frame is set on the outside of the arc-shaped structure of the support member. The fixing member of the rear frame is set on the inside of the arc-shaped structure of the support member. The hand-tightening screw I includes a hand-tightening part I and a screw I. The outer diameter of the screw I matches the inner diameter of the threaded through hole I. The length of the screw I matches the length of the two threaded through holes I.
[0015] It also includes a hand-tightening screw II, which includes a hand-tightening part II and a screw II. Corresponding threaded through holes II are provided at the center positions of the front and rear sides of the two frame columns. The outer diameter of the screw II matches the inner diameter of the threaded through hole II, and the length of the screw II matches the length of the two threaded through holes II.
[0016] A threaded sealing plug is fixedly installed at the lower end of the column. The shape of the threaded sealing plug matches the shape of the lower end of the column. A gasket is provided at the center of the lower end face of the threaded sealing plug, and the upper end face of the gasket is provided with anti-slip texture.
[0017] The bushing I, bushing II, connecting seat I, connecting seat II and U-shaped groove are made of glass fiber reinforced nylon.
[0018] The bearings, central shaft I, and central shaft II are made of stainless steel.
[0019] The shelves are made of ABS plastic.
[0020] The columns, L-shaped outer frame, horizontal bar I, vertical bar, horizontal bar II, and horizontal bar III are all made of aluminum alloy.
[0021] The beneficial effects of this utility model are:
[0022] This utility model features a bi-directional folding component and a corresponding frame, allowing for flexible storage by stacking one frame upwards to shorten the width and increase the height, or folding the shelf vertically to reduce the height and increase the width, depending on the size and height of the space. This bi-directional folding (vertical and horizontal) minimizes storage space and effectively solves the problem of not being able to use a bi-directional folding component, thus preventing the ability to choose between stacking one frame upwards to shorten the width and increase the height, or folding the shelf vertically to reduce the height and increase the width, and thus failing to minimize storage space.
[0023] This utility model is equipped with a support leg assembly, as well as a corresponding main frame and sub-frame, etc. It can release the brake of the support leg assembly when the shelf needs to be moved, and push the shelf at will. When the shelf is fixed, pressing down the brake of the support leg assembly can stably support the shelf. It effectively solves the problems that cannot be solved by using the support leg assembly, cannot release the brake of the support leg assembly when the shelf needs to be moved, and cannot press down the brake of the support leg assembly to stably support the shelf when it is fixed.
[0024] This invention features a soft, non-slip silicone layer and corresponding shelves. When items are placed on the shelves, the friction between the items and the shelves is increased, effectively protecting against the risk of accidental slippage. In the event of a fragile item accidentally tipping over, the soft, non-slip silicone layer provides protection, thus improving the safety of stored items. This effectively solves the problems that cannot be solved by using a soft, non-slip silicone layer, which fails to increase friction between items and shelves, effectively protect against the risk of accidental slippage, and provide protection against the risk of fragile items tipping over, thus failing to improve the safety of stored items. Attached Figure Description
[0025] Appendix Figure 1 This is a schematic diagram of the structure of this utility model, which is folded longitudinally and unfolded laterally.
[0026] Appendix Figure 2 This is a schematic diagram of the structure of this utility model when it unfolds longitudinally and laterally.
[0027] Appendix Figure 3 This is a schematic diagram of the joint structure of this utility model;
[0028] Appendix Figure 4 This is a left-side view of the U-shaped card slot of this utility model;
[0029] Appendix Figure 5 This is a structural schematic diagram of the support leg assembly of this utility model.
[0030] Legend:
[0031] 1. Bi-directional folding assembly, 2. Support leg assembly, 3. Frame, 4. Longitudinal folding unit, 5. Lateral folding unit, 6. Joint, 7. Bearing, 8. Central shaft I, 9. Bushing I, 10. Bushing II, 11. Connecting seat I, 12. Connecting seat II, 13. Limiting block, 14. U-shaped slot, 15. Through hole, 16. Central shaft II, 17. Connecting part, 18. Rubber support leg, 19. Nylon wheel, 20. Brake plate, 21. Column, 22. L-shaped outer frame, 23. Crossbar I, 24. 25. Vertical bar, 26. Horizontal bar II, 27. Horizontal bar III, 28. Shelf, 29. Soft anti-slip silicone layer, 30. Support component, 31. Support part, 32. Horizontal arm, 33. Vertical arm, 34. Bearing fixing unit, 35. Bearing component, 36. Fixing component, 37. Hand screw I, 38. Threaded through hole I, 39. Hand screw I, 40. Hand screw II, 41. Hand screw II, 42. Screw II, 43. Threaded through hole II, 44. Threaded sealing plug, 45. Gasket. Detailed Implementation
[0032] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The present invention will be further described in detail with reference to the embodiments, so that the public can better understand the implementation method of the present invention. The specific implementation method of the present invention is as follows:
[0033] The aforementioned bi-directional folding storage rack includes a bi-directional folding assembly 1, a support leg assembly 2, and a frame 3, characterized in that...
[0034] The bidirectional folding assembly 1 includes a longitudinal folding unit 4 and a transverse folding unit 5. The longitudinal folding unit 4 includes a joint 6, which includes a bearing 7, a central shaft I 8, a bushing I 9, a bushing II 10, a connecting seat I 11, and a connecting seat II 12. A limit block 13 is provided at a preset position on the outer side of the connecting seat II 12. The rotation angle of the central shaft I 8 is set from 0° to 180°. When the rotation angle of the central shaft I 8 is 0°, the positions of the connecting seat I 11 and the connecting seat II 12 are symmetrical. When the rotation angle of the central shaft I 8 is 180°, the limit block 13 acts to restrict the movement of the connecting seat I 11 and the connecting seat II 12. The 12 limiting function is that the positions of the connecting seat I 11 and the connecting seat II 12 are symmetrical vertically. The horizontal folding unit 5 includes a U-shaped slot 14. The two side walls of the U-shaped slot 14 are symmetrically provided with through holes 15. The two through holes 15 are hinged to the central shaft II 16. When the joint 6 is not rotated, the two frames 3 are arranged front and back. When the device is in use, the width is increased and the height is reduced. When the joint 6 is rotated upward by 180°, one of the frames 3 is stacked upward to shorten the width of the device and increase the height of the device. The joint 6 and the U-shaped slot 14 can fold the device in both longitudinal and transverse directions to minimize the storage space.
[0035] The support leg assembly 2 includes a connecting part 17, a rubber support leg 18, a nylon wheel 19, and a brake plate 20. The support leg assembly 2 is designed so that when the brake plate 20 is raised, the rubber support leg 18 is simultaneously lifted off the ground, thereby releasing the brake on the nylon wheel 19 and pushing the shelf to the designated location. After the shelf has moved, the brake plate 20 is pressed down, the rubber support leg 18 simultaneously supports the ground, and the nylon wheel 19 is braked, thus stably supporting the shelf.
[0036] The frame 3 is configured as a cuboid structure. Each frame 3 includes two uprights 21, two L-shaped outer frames 22, two horizontal bars I 23, two vertical bars 24, one horizontal bar II 25, and a predetermined number of horizontal bars III 26. The uprights 21 and L-shaped outer frames 22 are configured as square tubular structures, and the horizontal bars I 23, II 25, and III 26 are configured as circular tubular structures with equal outer diameters.
[0037] It also includes a shelf 27, the size of which matches the cross-sectional size of the frame 3. The upper surface of the shelf 27 is provided with a soft, non-slip silicone layer 28. Two support members 29 are symmetrically arranged laterally on the left and right side walls of the shelf 27. Each support member 29 includes a support part 30, which is configured as an arc-shaped structure with an opening facing downwards. The inner wall of the support part 30 matches the outer diameter of the crossbar II 25. The number of shelves 27 is set to a preset number.
[0038] The upper and lower ends of two columns 21 are respectively fixedly connected to crossbars I 23. U-shaped slots 14 are fixedly provided on the front sides of the upper and lower ends of each column 21. The opening directions of the two matching U-shaped slots 14 are symmetrically arranged inwards. The short rod of the L-shaped outer frame 22 is a horizontal arm 31, the front end of which is fixedly connected to the central axis II 16 of the lower U-shaped slot 14. The long rod of the L-shaped outer frame 22 is a vertical arm 32, which is connected to the upper... The central shaft II16 of the U-shaped slot 14 is fixedly connected. The rear end of the horizontal arm 31 is fixedly connected to the rear end of the horizontal bar II25 with a vertical bar 24. A preset number of horizontal bars III26 are fixedly connected between the vertical bar 24 and the vertical arm 32. The distance between the horizontal bar II25 and the upper horizontal bar III26 is equal to the distance between two adjacent horizontal bars III26. The distance between two adjacent horizontal bars III26 is equal to the distance between the upper horizontal bar III26 and the horizontal arm 31.
[0039] The number of frames 3 is set to two, and the two frames are configured with columns 21 facing each other. The upper port of the column 21 of the front frame 3 is fixedly connected to the connecting seat I 11, and the upper port of the corresponding column 21 of the rear frame 3 is fixedly connected to the connecting seat II 12. The lower front end of the cross arm 31 of the front frame 3 is fixedly connected to the connecting part 17 of the foot assembly 2, and the lower rear end of the cross arm 31 of the rear frame 3 is fixedly connected to the connecting part 17 of the foot assembly 2.
[0040] It also includes a support and fixing unit 33, which includes a support member 34, a fixing member 35, and a hand-tightening screw I 36. The size of the support member 34 matches the size of the upper port of the vertical arm 32. The end face of the support member 34 is fixedly connected to the upper port of the vertical arm 32. The other end face of the support member 34 is set as an arc-shaped structure. The fixing member 35 is set as a cylindrical structure. A threaded through hole I 37 is opened at the center of the shaft of the fixing member 35. The length of the fixing member 35 is equal to half the length of the support member 34. The fixing member 35 is horizontally fixed in the arc-shaped structure of the support member 34. The fixing member 35 of the front frame 3 is set on the outside of the arc-shaped structure of the support member 34, and the fixing member 35 of the rear frame 3 is set on the inside of the arc-shaped structure of the support member 34. The hand-tightening screw I 36 includes a hand-tightening part I 38 and a screw I 39. The outer diameter of the screw I 39 matches the inner diameter of the threaded through hole I 37, and the length of the screw I 39 matches the length of the two threaded through holes I 37.
[0041] It also includes a hand-tightening screw II40, which includes a hand-tightening part II41 and a screw II42. Corresponding threaded through holes II43 are opened at the center positions of the front and rear sides of the two frame 3 columns 21. The outer diameter of the screw II42 matches the inner diameter of the threaded through hole II43, and the length of the screw II42 matches the length of the two threaded through holes II43.
[0042] A threaded sealing plug 44 is fixedly provided at the lower end of the column 21. The shape of the threaded sealing plug 44 matches the shape of the lower end of the column 21. A gasket 45 is provided at the center of the lower end face of the threaded sealing plug 44. The upper end face of the gasket 45 is provided with anti-slip texture.
[0043] The bushing I9, bushing II10, connecting seat I11, connecting seat II12 and U-shaped groove 14 are made of glass fiber reinforced nylon.
[0044] Bearing 7, central shaft I 8, and central shaft II 16 are made of stainless steel;
[0045] Sheet 27 is made of ABS plastic.
[0046] The columns 21, L-shaped outer frame 22, horizontal bar I 23, vertical bar 24, horizontal bar II 25, and horizontal bar III 26 are made of aluminum alloy. Specific Implementation Example 1:
[0047] In a spacious office, the aforementioned two-way folding shelving unit is placed vertically on the ground, with the longitudinal and transverse folding shelving units supported by the pads 45 and rubber feet 2. When items need to be placed in both directions, simply pull forward the two L-shaped outer frames 22 of the front frame 3 and pull in the opposite direction the two L-shaped outer frames 22 of the rear frame 3. Supported by the U-shaped slots 14, each frame rotates 90° and unfolds. With the nylon wheels 19 rolling, the transverse folding device unfolds easily. The installer holds the hand-tightening part II 41, aligns the screws II 42 with the threaded through holes II 43 at the center of the front and rear sides of the two frame 3 uprights 21, and uses the hand-tightening screws II 40 to tighten and secure the two frame 3 on both sides. The threaded sealing plug 4 is then installed. 4. The bottom end of all columns 21 is fixedly connected. The anti-slip texture on the pad 45 increases friction with the ground and plays the role of stabilizing the support device. The support part 30 on the shelf 27 is fastened to the two matching horizontal bars Ⅲ 26 on the same horizontal plane. The fastening can be selectively performed according to the height of the items to be placed. The upper surface of the shelf 27 is provided with a soft anti-slip silicone layer 28, which can enhance the friction between the items and the shelf 27 when items are placed, effectively preventing the risk of items accidentally slipping. When fragile items are accidentally tilted, they are protected by the soft anti-slip silicone layer 28, improving the safety factor of the stored items. After the two-way folding shelf is installed, the items are placed on the shelf 27, which greatly saves office space.
[0048] When the bidirectional folding shelf needs to be moved, the user lifts the brake plate 20 with their foot, the rubber support 18 is lifted off the ground, the nylon wheel 19 is released from the brake, the user pulls the bidirectional folding shelf to place it in a suitable position, and then presses down the brake plate 20 with their foot, the rubber support 18 supports the ground, and at the same time the nylon wheel 19 is braked by the rubber support 18, the support assembly 2 stably supports the device, and the support assembly 2 has two functions: convenient movement and stable placement. Specific Implementation Example 2:
[0049] When using the bidirectional folding shelving unit in a small office with a high ceiling, pull one of the longitudinally folded frames 3 forward or backward, rotate the joint 6 upward 180° to unfold it, limit block 13 limits and fixes connecting seat I 11 and connecting seat II 12, and the corresponding fixing parts 35 on the two frames 3 are respectively engaged on the arc-shaped structure of the bearing 34. The threaded through holes I 37 of the two corresponding fixing parts 35 form a passage. The installer holds the hand-tightening part I 38, aligns the screw I 39 with the threaded through hole I 37, and uses the hand-tightening screw I 36 to tighten the left and right sides respectively to fix the two frames 3. Then, according to the steps in the first specific embodiment, unfold the two frames 3 horizontally, fix the threaded sealing plug 44 to the lower port of all the columns 21, and fasten the support part 30 on the shelf 27 to the two matching horizontal bars III 26 on the same horizontal plane. The bidirectional folding shelving unit is installed and the items are placed on the shelf 27. Specific Implementation Example 3:
[0050] When storing the bidirectional folding shelf, follow the steps in Specific Embodiment 1 and Specific Embodiment 2, but in reverse order: unscrew the hand screw I36, pull the upper frame 3 of the longitudinally unfolding device to rotate it to 0°, and pull the L-shaped outer frames 22 of the two frames 3 of the laterally unfolding device to rotate them inward to lock them to 0°. After the longitudinal and lateral folding are completed, put the bidirectional folding shelf into the storage bag for storage, minimizing the storage space.
Claims
1. A two-way folding storage rack, comprising a two-way folding assembly (1), a support leg assembly (2), and a frame (3), characterized in that, The bidirectional folding assembly (1) includes a longitudinal folding unit (4) and a transverse folding unit (5). The longitudinal folding unit (4) includes a joint (6). The joint (6) includes a bearing (7), a central shaft I (8), a bushing I (9), a bushing II (10), a connecting seat I (11), and a connecting seat II (12). A limit block (13) is provided at a preset position on the outside of the connecting seat II (12). The rotation angle of the central shaft I (8) is set to 0° to 180°. When the rotation angle of the central shaft I (8) is 0°, the... The positions of connecting seat I (11) and connecting seat II (12) are symmetrical. When the rotation angle of the central shaft I (8) is 180°, the limiting block (13) plays the role of limiting the connecting seat I (11) and connecting seat II (12). The positions of connecting seat I (11) and connecting seat II (12) are symmetrical. The transverse folding unit (5) includes a U-shaped slot (14). The two side walls of the U-shaped slot (14) are symmetrically provided with through holes (15). The two through holes (15) are hinged to the central shaft II (16). The support leg assembly (2) includes a connecting part (17), a rubber support leg (18), a nylon wheel (19), and a brake plate (20). By lifting the brake plate (20), the rubber support leg (18) is simultaneously lifted off the ground, which releases the brake on the nylon wheel (19). By pressing down the brake plate (20), the rubber support leg (18) simultaneously supports the ground, which brakes the nylon wheel (19), thus achieving the purpose of convenient movement and stable placement. The frame (3) is set as a cuboid structure. Each frame (3) includes 2 columns (21), 2 L-shaped outer frames (22), 2 horizontal bars I (23), 2 vertical bars (24), 1 horizontal bar II (25) and a preset number of horizontal bars III (26). The columns (21) and L-shaped outer frames (22) are set as square tube structures. The horizontal bars I (23), II (25) and III (26) are set as circular tube structures with equal outer diameters.
2. The bidirectional folding storage rack as described in claim 1, characterized in that, It also includes a shelf (27), the size of which matches the size of the cross section of the frame (3). The upper surface of the shelf (27) is provided with a soft anti-slip silicone layer (28). The left and right side walls of the shelf (27) are symmetrically provided with two support members (29). The support member (29) includes a support part (30). The support part (30) is set as an arc-shaped structure with an opening facing downward. The inner wall of the support part (30) matches the outer diameter of the crossbar II (25). The number of the shelf (27) is set to a preset number.
3. A bidirectional folding storage rack as described in claim 1, characterized in that, The upper and lower ends of two columns (21) are respectively fixedly connected to crossbar I (23). The upper and lower ends of the columns (21) are fixedly provided with U-shaped slots (14). The opening direction of the two matching U-shaped slots (14) is set to be symmetrical inward. The short rod of the L-shaped outer frame (22) is set as a horizontal arm (31). The front end of the horizontal arm (31) is fixedly connected to the central axis II (16) of the lower U-shaped slot (14). The long rod of the L-shaped outer frame (22) is set as a vertical arm (32). The vertical arm (32) is connected to the upper through the crossbar II (25). The central shaft II (16) of the U-shaped slot (14) is fixedly connected. The rear end of the horizontal arm (31) is fixedly connected to the rear end of the horizontal bar II (25) with a vertical bar (24). A preset number of horizontal bars III (26) are fixedly connected between the vertical bar (24) and the vertical arm (32). The distance between the horizontal bar II (25) and the upper horizontal bar III (26) is equal to the distance between two adjacent horizontal bars III (26). The distance between two adjacent horizontal bars III (26) is equal to the distance between the upper horizontal bar III (26) and the horizontal arm (31). The number of frames (3) is set to 2. The two frames (3) are set to a back-to-back structure of columns (21). The upper port of the column (21) of the front frame (3) is fixedly connected to the connecting seat I (11). The upper port of the corresponding column (21) of the rear frame (3) is fixedly connected to the connecting seat II (12). The lower front end of the cross arm (31) of the front frame (3) is fixedly connected to the connecting part (17) of the foot assembly (2). The lower rear end of the cross arm (31) of the rear frame (3) is fixedly connected to the connecting part (17) of the foot assembly (2).
4. A bidirectional folding storage rack as described in claim 1 or 3, characterized in that, It also includes a support fixing unit (33), which includes a support member (34), a fixing member (35), and a hand-tightening screw I (36). The size of the support member (34) matches the size of the upper port of the vertical arm (32). The end face of the support member (34) is fixedly connected to the upper port of the vertical arm (32). The other end face of the support member (34) is set as an arc-shaped structure. The fixing member (35) is set as a cylindrical structure. A threaded through hole I (37) is opened at the center of the shaft of the fixing member (35). The length of the fixing member (35) is the same as that of the support member (34). The length of the fastener (35) is equal to half of the length of the bearing (34). The fastener (35) of the front frame (3) is set on the outside of the arc structure of the bearing (34), and the fastener (35) of the rear frame (3) is set on the inside of the arc structure of the bearing (34). The hand-tightening screw I (36) includes a hand-tightening part I (38) and a screw I (39). The outer diameter of the screw I (39) matches the inner diameter of the threaded through hole I (37), and the length of the screw I (39) matches the length of the two threaded through holes I (37).
5. A bidirectional folding storage rack as described in claim 1 or 4, characterized in that, It also includes a hand-tightening screw II (40), which includes a hand-tightening part II (41) and a screw II (42). Corresponding threaded through holes II (43) are provided at the front and rear center positions of the lower side of the two frame (3) columns (21). The outer diameter of the screw II (42) matches the inner diameter of the threaded through hole II (43), and the length of the screw II (42) matches the length of the two threaded through holes II (43).
6. A bidirectional folding storage rack as described in claim 1, characterized in that, The lower end of the column (21) is fixedly provided with a threaded sealing plug (44), the shape of the threaded sealing plug (44) matches the shape of the lower end of the column (21), a gasket (45) is provided at the center of the lower end face of the threaded sealing plug (44), and the upper end face of the gasket (45) is provided with anti-slip texture.
7. A bidirectional folding storage rack as described in claim 6, characterized in that, The bushing I (9), bushing II (10), connecting seat I (11), connecting seat II (12) and U-shaped groove (14) are made of glass fiber reinforced nylon. The bearing (7), central shaft I (8) and central shaft II (16) are made of stainless steel; The shelf (27) is made of ABS plastic. The columns (21), L-shaped outer frame (22), horizontal bar I (23), vertical bar (24), horizontal bar II (25), and horizontal bar III (26) are made of aluminum alloy.