Foldable storage frame

By designing a foldable storage basket, the folding and storage of the basket is achieved through a rotating connection of the side railing and a locking mechanism, which solves the problem of the large space occupied by existing baskets and improves the convenience of conveying.

CN224563042UActive Publication Date: 2026-07-28ZHONGSHAN BAIHE METAL IND CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGSHAN BAIHE METAL IND CO LTD
Filing Date
2025-08-27
Publication Date
2026-07-28

AI Technical Summary

Technical Problem

The existing material frames are made of an integrated structure and cannot be folded or disassembled, resulting in a large space occupation when unloaded and inconvenience for transportation.

Method used

Design a foldable storage basket that achieves folding storage through a rotating side railing and locking mechanism. The locking mechanism and alignment mechanism work together to lock in both the used and stored states, ensuring stability and convenience.

Benefits of technology

It can be folded and stored when not in use, reducing space occupation, facilitating transportation, and improving space utilization efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of intelligent warehousing, specifically disclose a material frame of foldable storage, including bottom frame, first side rail of the left side of bottom frame, second side rail of the right side of bottom frame and third side rail of the back side of bottom frame, first side rail, second side rail and third side rail all are rotatively connected with bottom frame, and first side rail, second side rail and third side rail all can rotate to unfolded use state and fold on the storage state of bottom frame, both sides of third side rail all are provided with locking mechanism, first side rail and second side rail all are provided with alignment mechanism, when first side rail, second side rail and third side rail all are in use state, the locking mechanism of both sides of third side rail can respectively with the alignment mechanism of first side rail and the alignment mechanism of second side rail locking cooperation or separate from each other, the utility model discloses can fold storage when not using, reduce the occupation to space, make things convenient for the conveying of material frame.
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Description

Technical Field

[0001] This utility model relates to the field of intelligent warehousing technology, and in particular to a foldable storage rack. Background Technology

[0002] In the warehousing and logistics sector, storage crates are widely used for the temporary storage and transfer of semi-finished or finished products. Existing storage crates typically employ a one-piece structure, with a rigid connection between the side rails and the bottom frame, making them impossible to fold or disassemble. After the storage and transfer of materials, the empty crates remain in an unfolded state, which occupies space and hinders the transport of the crates. Utility Model Content

[0003] This utility model provides a foldable storage material frame that can be folded and stored when not in use, reducing space occupation and facilitating the transportation of the material frame.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] This utility model provides a foldable storage frame, including a base frame, a first side rail on the left side of the base frame, a second side rail on the right side of the base frame, and a third side rail on the rear side of the base frame. The first, second, and third side rails are all rotatably connected to the base frame, and all three side rails can be rotated to an unfolded use state and a folded storage state on the base frame. Locking mechanisms are provided on both sides of the third side rail, and alignment mechanisms are provided on both sides of the first and second side rails. When the first, second, and third side rails are all in use, the locking mechanisms on both sides of the third side rail can lock into or separate from the alignment mechanisms of the first and second side rails, respectively.

[0006] In some embodiments, the locking mechanism includes a first locking mechanism and a second locking mechanism, and the alignment mechanism includes a first alignment mechanism adapted to the first locking mechanism and a second alignment mechanism adapted to the second locking mechanism. When the first side fence, the second side fence, and the third side fence are all in use, the first locking mechanisms on both sides of the third side fence can lock and cooperate with the first alignment mechanisms of the first side fence and the first alignment mechanisms of the second side fence, respectively, to restrict the rotation of the third side fence. The second locking mechanisms on both sides of the third side fence can lock and cooperate with the second alignment mechanisms of the first side fence and the second alignment mechanisms of the second side fence, respectively, to restrict the rotation of the first side fence and the second side fence.

[0007] In some embodiments, the first locking mechanism includes a locking rod movable in a left-right direction, and the first alignment mechanism is a socket adapted to the locking rod; when the locking rod is inserted into the socket, the first locking mechanism and the first alignment mechanism are locked together, and when the locking rod is disengaged from the socket, the first locking mechanism and the first alignment mechanism are separated from each other.

[0008] In some embodiments, the first locking mechanism further includes an elastic element for applying an outwardly extending elastic force to the locking rod.

[0009] In some embodiments, the locking rod is connected to a gripping rod that can be held by a user, the gripping rod extending radially along the locking rod; the first locking mechanism further includes a fixed seat, the fixed seat having a through hole extending in a left-right direction, the locking rod passing through the through hole and being able to move and rotate within the through hole; the fixed seat has a limiting groove, and when the locking rod disengages from the insertion hole, the gripping rod can rotate to insert into the limiting groove to restrict the locking rod from extending outward.

[0010] In some embodiments, the elastic element is a spring sleeved on the outside of the locking rod, one end of the spring abutting against the fixing seat, and the other end of the spring being connected to the locking rod; or, the locking rod is provided with a protruding ring, and the other end of the spring abuts against the protruding ring.

[0011] In some embodiments, the fixing base is further provided with a receiving groove, and when the locking rod is inserted into the insertion hole, the gripping rod can be rotated to insert into the receiving groove.

[0012] In some embodiments, the second locking mechanism includes a hook, and the second alignment mechanism includes a positioning plate with a positioning groove that opens to the front; when the third side fence rotates from a folded state to a usable state, the hook can be inserted into the positioning groove and hooked onto the positioning plate.

[0013] In some embodiments, the hook includes a positioning rod extending outward in the left-right direction and a limiting plate located at the end of the positioning rod. The outer diameter of the limiting plate is larger than the width of the positioning groove. When the third side fence is rotated from the folded state to the use state, the positioning rod can be inserted into the positioning groove, and the positioning plate is located between the limiting plate and the third side fence.

[0014] In some embodiments, both the first side fence and the second side fence are provided with a third locking mechanism, and the bottom frame is provided with two sets of third alignment mechanisms that are adapted to the third locking mechanisms of the first side fence and the second side fence, respectively. When the first side fence is in use, the third locking mechanism of the first side fence can lock with the third alignment mechanism to restrict the rotation of the first side fence. When the second side fence is in use, the third locking mechanism of the second side fence can lock with the third alignment mechanism to restrict the rotation of the second side fence.

[0015] In some embodiments, a limiting mechanism is provided on the bottom frame and / or the third side fence, which is used to restrict the third side fence from rotating backward when it is in use.

[0016] This utility model has at least the following beneficial effects: When the material frame of this utility model is needed, the first side fence, the second side fence, and the third side fence are all rotated to the use state, and then the locking mechanisms on both sides of the third side fence are respectively locked with the alignment mechanisms of the first side fence and the second side fence. The first side fence, the second side fence, and the third side fence can be kept in the use state to ensure normal use by the user. When the material frame of this utility model is not needed, the locking mechanisms on both sides of the third side fence are separated from the alignment mechanisms of the first side fence and the second side fence. The first side fence, the second side fence, and the third side fence are all rotated to the storage state folded on the bottom frame. This can reduce the space occupied by the entire material frame and facilitate the transportation of the material frame. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a foldable storage basket according to an embodiment of the present invention when it is in use.

[0018] Figure 2 This is a structural diagram of a foldable storage material frame in the storage state according to an embodiment of the present invention;

[0019] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 4 This is a schematic diagram of the structure of the third side fence according to an embodiment of the present invention;

[0021] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0022] Figure 6 This is a schematic diagram of the structure of the first side fence according to an embodiment of the present invention;

[0023] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0024] Figure 8 This is a cross-sectional view of the second side fence and the bottom frame according to an embodiment of the present invention.

[0025] The attached figures are labeled as follows:

[0026] Base frame 100, support rod 110;

[0027] Vertical bar 201, connecting plate 202, third locking mechanism 203, first side fence 210, second side fence 220, third side fence 230;

[0028] Locking mechanism 300, first locking mechanism 310, locking rod 311, elastic element 312, gripping rod 313, fixed seat 314, limiting groove 315, receiving groove 316, second locking mechanism 320, positioning rod 321, limiting plate 322.

[0029] Alignment mechanism 400, first alignment mechanism 410, alignment hole 411, second alignment mechanism 420, positioning plate 421, positioning groove 422. Detailed Implementation

[0030] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0031] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are 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.

[0032] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intervening element (e.g., the third element) between the element and the other element.

[0033] An embodiment of this utility model provides a foldable storage material frame, such as... Figure 1-3 As shown, the system includes a base frame 100, a first side fence 210 located on the left side of the base frame 100, a second side fence 220 located on the right side of the base frame 100, and a third side fence 230 located on the rear side of the base frame 100. The first side fence 210, second side fence 220, and third side fence 230 are all rotatably connected to the base frame 100. The first side fence 210 and second side fence 220 can rotate towards each other or away from each other, while the third side fence 230 can rotate forward or backward. All three side fences can be rotated to an unfolded, usable state. Figure 1As shown, the first side fence 210, the second side fence 220, and the third side fence 230 are approximately vertical at this time to prevent goods on the bottom frame 100 from moving to the side. The first side fence 210, the second side fence 220, and the third side fence 230 can also be rotated to a folded-down storage state on the bottom frame 100, as shown... Figure 2 As shown, the first side fence 210, the second side fence 220 and the third side fence 230 are all folded and stored.

[0034] Locking mechanisms 300 are provided on both sides of the third side fence 230, and alignment mechanisms 400 are provided on both the first side fence 210 and the second side fence 220. The alignment mechanisms 400 of the first side fence 210 and the second side fence 220 are respectively adapted to the locking mechanisms 300 on both sides of the third side fence 230. When the first side fence 210, the second side fence 220 and the third side fence 230 are all in use, the locking mechanisms 300 on both sides of the third side fence 230 can be locked in place with the alignment mechanisms 400 of the first side fence 210 and the second side fence 220 or can be separated from each other.

[0035] When the material frame of this embodiment needs to be used, the first side fence 210, the second side fence 220 and the third side fence 230 are all rotated to the use state. Then, the locking mechanisms 300 on both sides of the third side fence 230 are locked in place with the alignment mechanisms 400 of the first side fence 210 and the second side fence 220, respectively. This restricts the rotation of the first side fence 210, the second side fence 220 and the third side fence 230, so that the first side fence 210, the second side fence 220 and the third side fence 230 can be kept in the use state, preventing the first side fence 210, the second side fence 220 and the third side fence 230 from tipping over on their own, and ensuring that the user can use the material frame normally.

[0036] When the material frame of this embodiment is not needed, the locking mechanisms 300 on both sides of the third side fence 230 are separated from the alignment mechanisms 400 of the first side fence 210 and the second side fence 220, respectively, so that the rotation of the first side fence 210, the second side fence 220 and the third side fence 230 is no longer restricted. The first side fence 210, the second side fence 220 and the third side fence 230 can all be rotated to a folded storage state on the bottom frame 100, thereby reducing the space occupied by the entire material frame and facilitating the transportation of the material frame.

[0037] In some embodiments, such as Figure 1 and Figure 3As shown, the locking mechanism 300 includes a first locking mechanism 310 and a second locking mechanism 320, and the alignment mechanism 400 includes a first alignment mechanism 410 adapted to the first locking mechanism 310 and a second alignment mechanism 420 adapted to the second locking mechanism 320. When the first side fence 210, the second side fence 220, and the third side fence 230 are all in use, the first locking mechanisms 310 on both sides of the third side fence 230 can lock and cooperate with the first alignment mechanisms 410 of the first side fence 210 and the first alignment mechanisms 420 of the second side fence 220 respectively to restrict the rotation of the third side fence 230. When the first locking mechanisms 310 on both sides of the third side fence 230 are separated from the first alignment mechanisms 410 of the first side fence 210 and the first alignment mechanisms 420 of the second side fence 220 respectively, the rotation of the third side fence 230 is no longer restricted, and the third side fence 230 can be rotated to the storage state. The second locking mechanisms 320 on both sides of the third side fence 230 can lock and cooperate with the second alignment mechanism 420 of the first side fence 210 and the second alignment mechanism 420 of the second side fence 220 respectively to restrict the rotation of the first side fence 210 and the second side fence 220. When the second locking mechanisms 320 on both sides of the third side fence 230 are separated from the second alignment mechanism 420 of the first side fence 210 and the second alignment mechanism 420 of the second side fence 220 respectively, the rotation of the first side fence 210 and the second side fence 220 is no longer restricted, and the first side fence 210 and the second side fence 220 can be rotated to the storage state.

[0038] Since the first side fence 210 and the second side fence 220 rotate in different directions than the third side fence 230, this embodiment restricts the rotation of the third side fence 230 by the cooperation of the first locking mechanism 310 and the first alignment mechanism 410, and restricts the rotation of the first side fence 210 and the second side fence 220 by the cooperation of the second locking mechanism 320 and the second alignment mechanism 420, thus ensuring the locking effect. The first side fence 210, the second side fence 220 and the third side fence 230 can be stably maintained in the use state.

[0039] Furthermore, such as Figure 3-7 As shown, the first locking mechanism 310 includes a locking rod 311 that can move in the left-right direction, and the first alignment mechanism 410 is a socket 411 adapted to the locking rod 311. Since the third side fence 230 rotates forward or backward, when the locking rod 311 is inserted into the socket 411, the third side fence 230 cannot rotate, and the first locking mechanism 310 locks into the first alignment mechanism 410. When the locking rod 311 disengages from the socket 411, it no longer restricts the rotation of the third side fence 230, and the first locking mechanism 310 and the first alignment mechanism 410 can be separated from each other.

[0040] The structure employs a locking rod 311 that engages with the insertion hole 411, resulting in a simple design that is easy to operate. Users can manually control the locking rod 311 to move left and right. The locking rod 311 can extend outwards and be inserted into the insertion hole 411, or it can retract inwards and disengage from the insertion hole 411.

[0041] Furthermore, the first locking mechanism 310 also includes an elastic element 312, which applies an outwardly extending elastic force to the locking rod 311. Thus, without any other external force, the force applied by the elastic element 312 to the locking rod 311 keeps it in an outwardly extending state, preventing it from easily disengaging from the insertion hole 411 and ensuring the locking effect on the third side fence 230. When the user wants the locking rod 311 to disengage from the insertion hole 411, a certain force is required to overcome the elastic force of the elastic element 312.

[0042] Furthermore, the locking lever 311 is connected to a grip lever 313 for the user to hold. The user can grasp the grip lever 313 and thus move the locking lever 311 in the left and right directions. The grip lever 313 extends radially along the locking lever 311, forming a bent structure. This structure makes it easier for the user to apply force, making operation more effortless.

[0043] The first locking mechanism 310 also includes a fixed base 314, which has a through hole extending in the left-right direction. The locking rod 311 passes through the through hole and can move and rotate within it. A limiting groove 315 is provided on the fixed base 314. When the locking rod 311 disengages from the insertion hole 411, the gripping rod 313 can rotate to insert into the limiting groove 315 to restrict the locking rod 311 from extending outwards. Since the elastic element 312 applies an outward force to the locking rod 311, continuous force needs to be applied to the locking rod 311 to disengage it from the insertion hole 411, which is inconvenient for the user. Therefore, in this embodiment, by inserting the gripping rod 313 into the limiting groove 315, the inner wall of the limiting groove 315 restricts the locking rod 311 from extending outwards, eliminating the need for continuous force application to the locking rod 311, making operation more convenient and effortless for the user.

[0044] The mounting base 314 is also provided with a receiving groove 316. When the locking rod 311 is inserted into the socket 411, the gripping rod 313 can be rotated to insert into the receiving groove 316. The receiving groove 316 accommodates the gripping rod 313 and also limits the gripping rod 313, restricting the distance of the locking rod 311 into the socket 411 and preventing it from being inserted too deeply.

[0045] In some embodiments, such as Figure 5As shown, the elastic element 312 is a spring sleeved on the outside of the locking rod 311. One end of the spring abuts against the fixing seat 314, and the other end of the spring is connected to the locking rod 311. Alternatively, the locking rod 311 is provided with a protruding ring, and the other end of the spring abuts against the protruding ring.

[0046] In this embodiment, the elastic element 312 is defined as a spring. The spring is sleeved on the outside of the locking rod 311, making it difficult to detach from the locking rod 311, and can stably provide elastic force along the axial direction of the locking rod 311.

[0047] In some embodiments, such as Figure 3-7 As shown, the second locking mechanism 320 includes a hook, and the second alignment mechanism 420 includes a positioning plate 421, which has a positioning groove 422 with a front opening. When the third side fence 230 rotates from the folded state to the use state, the hook can be inserted into the positioning groove 422 and hooked onto the positioning plate 421, thus restricting the rotation of the first side fence 210 and the second side fence 220.

[0048] This embodiment uses hooks to restrict the rotation of the first side fence 210 and the second side fence 220, resulting in a simple structure. During the rotation of the third side fence 230 towards the use state, the hooks automatically engage with the positioning plate 421. During the rotation of the third side fence 230 towards the storage state, the hooks automatically detach from the positioning plate 421, eliminating the need for the user to switch between locking and unlocking states, simplifying operation, and making it more convenient to use.

[0049] Furthermore, the hook includes a positioning rod 321 extending outward in the left-right direction and a limiting plate 322 located at the end of the positioning rod 321. The outer diameter of the limiting plate 322 is larger than the width of the positioning groove 422. When the third side fence 230 rotates from the folded state to the use state, the positioning rod 321 can be inserted into the positioning groove 422. The positioning plate 421 is located between the limiting plate 322 and the third side fence 230. In this state, the limiting plate 322 can abut against the outer side of the positioning plate 421 (the side away from the third side fence 230), thereby restricting the first side fence 210 and the second side fence 220 from rotating in a direction away from each other. The third side fence 230 can abut against the inner side of the positioning plate 421 (the side close to the third side fence 230), thereby restricting the first side fence 210 and the second side fence 220 from rotating towards each other, thus playing the role of restricting the rotation of the first side fence 210 and the second side fence 220.

[0050] In some embodiments, such as Figure 1 , Figure 2 , Figure 6 and Figure 8As shown, both the first side fence 210 and the second side fence 220 are equipped with a third locking mechanism 203. The bottom frame 100 is provided with two sets of third alignment mechanisms that are respectively adapted to the third locking mechanisms 203 of the first side fence 210 and the second side fence 220. When the first side fence 210 is in use, the third locking mechanism 203 of the first side fence 210 can lock with the third alignment mechanism to restrict the rotation of the first side fence 210; when the second side fence 220 is in use, the third locking mechanism 203 of the second side fence 220 can lock with the third alignment mechanism to restrict the rotation of the second side fence 220.

[0051] Therefore, in this embodiment, the cooperation between the third locking mechanism 203 and the third alignment mechanism can further restrict the rotation of the first side fence 210 and the second side fence 220, ensuring that the rotation of the first side fence 210 and the second side fence 220 can be stably maintained in the working state. Of course, when the first side fence 210 and the second side fence 220 need to be rotated to the storage state, the third locking mechanism 203 needs to be separated from the third alignment mechanism.

[0052] Furthermore, both the first side fence 210 and the second side fence 220 include vertical bars 201, and connecting plates 202 are fixed to both sides of the lower end of the vertical bars 201. The bottom frame 100 includes a vertically upward extending support rod 110, which can be located between the two connecting plates 202 and rotatably connected to the two connecting plates 202 respectively. A third locking mechanism 203 can be provided on the connecting plates 202.

[0053] In some embodiments, such as Figure 1 , Figure 2 , Figure 6 and Figure 8 As shown, the third locking mechanism 203 includes a retractable elastic pin, and the third alignment mechanism is a limiting hole provided on the bottom frame 100. The elastic pin can be inserted into or disengaged from the limiting hole. When the elastic pin is inserted into the limiting hole, the third locking mechanism 203 and the third alignment mechanism are locked together. When the elastic pin is disengaged from the limiting hole, the third locking mechanism 203 and the third alignment mechanism are separated. The default state of the elastic pin is that it is inserted into the limiting hole. Thus, the third locking mechanism 203 and the third alignment mechanism can maintain a locked engagement, preventing the elastic pin from disengaging from the limiting hole on its own. When the first side railing 210 and the second side railing 220 need to be rotated to the retracted state, the user can apply force to the elastic pin to disengage it from the limiting hole.

[0054] In some embodiments, a limiting mechanism is provided on the bottom frame 100 and / or the third side fence 230. When the third side fence 230 is in use, the limiting mechanism is used to restrict the third side fence 230 from rotating to the rear, which can prevent the third side fence 230 from flipping backward.

[0055] The limiting mechanism can be a baffle. When the third side fence 230 is in use, the baffle abuts against the rear side of the third side fence 230, thereby preventing the third side fence 230 from rotating to the rear.

[0056] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A foldable storage crate, characterized by: The device includes a base frame, a first side fence located on the left side of the base frame, a second side fence located on the right side of the base frame, and a third side fence located on the rear side of the base frame. The first, second, and third side fences are all rotatably connected to the base frame, and all three side fences can be rotated to an unfolded use state and a folded storage state on the base frame. Locking mechanisms are provided on both sides of the third side fence, and alignment mechanisms are provided on both sides of the first and second side fences. When the first, second, and third side fences are all in use, the locking mechanisms on both sides of the third side fence can lock and engage with the alignment mechanisms of the first and second side fences, respectively, or separate from each other.

2. The foldable storage pallet of claim 1, wherein: The locking mechanism includes a first locking mechanism and a second locking mechanism. The alignment mechanism includes a first alignment mechanism adapted to the first locking mechanism and a second alignment mechanism adapted to the second locking mechanism. When the first side fence, the second side fence, and the third side fence are all in use, the first locking mechanisms on both sides of the third side fence can lock with the first alignment mechanisms of the first side fence and the first alignment mechanisms of the second side fence, respectively, to restrict the rotation of the third side fence. The second locking mechanisms on both sides of the third side fence can lock with the second alignment mechanisms of the first side fence and the second alignment mechanisms of the second side fence, respectively, to restrict the rotation of the first side fence and the second side fence.

3. The collapsible storage pallet of claim 2, wherein: The first locking mechanism includes a locking rod that can move in the left and right direction, and the first alignment mechanism is a socket adapted to the locking rod; when the locking rod is inserted into the socket, the first locking mechanism and the first alignment mechanism are locked together, and when the locking rod is disengaged from the socket, the first locking mechanism and the first alignment mechanism are separated from each other.

4. The foldable storage pallet of claim 3, wherein: The first locking mechanism further includes an elastic element, which is used to apply an outwardly extending elastic force to the locking rod.

5. The collapsible storage pallet of claim 4, wherein: The locking rod is connected to a gripping rod that can be held by the user, and the gripping rod extends radially along the locking rod; the first locking mechanism also includes a fixed base, the fixed base is provided with a through hole extending in the left and right direction, the locking rod passes through the through hole and can move and rotate in the through hole; the fixed base is provided with a limiting groove, when the locking rod is disengaged from the insertion hole, the gripping rod can rotate to insert into the limiting groove to restrict the locking rod from extending outward.

6. The collapsible storage pallet of claim 5, wherein: The elastic element is a spring sleeved on the outside of the locking rod. One end of the spring abuts against the fixed seat, and the other end of the spring is connected to the locking rod. Alternatively, the locking rod is provided with a protruding ring, and the other end of the spring abuts against the protruding ring.

7. The foldable storage basket according to claim 2, characterized in that: The second locking mechanism includes a hook, and the second alignment mechanism includes a positioning plate with a positioning groove that opens to the front. When the third side fence rotates from a folded state to a usable state, the hook can be inserted into the positioning groove and hooked onto the positioning plate.

8. The foldable storage basket according to claim 7, characterized in that: The hook includes a positioning rod extending outward in the left-right direction and a limiting plate located at the end of the positioning rod. The outer diameter of the limiting plate is larger than the width of the positioning groove. When the third side fence is rotated from the folded state to the use state, the positioning rod can be inserted into the positioning groove. The positioning plate is located between the limiting plate and the third side fence.

9. The foldable storage basket according to any one of claims 1-8, characterized in that: Both the first and second side fences are equipped with a third locking mechanism. The bottom frame is equipped with two sets of third alignment mechanisms that are adapted to the third locking mechanisms of the first and second side fences, respectively. When the first side fence is in use, the third locking mechanism of the first side fence can lock with the third alignment mechanism to restrict the rotation of the first side fence. When the second side fence is in use, the third locking mechanism of the second side fence can lock with the third alignment mechanism to restrict the rotation of the second side fence.

10. The foldable storage basket according to any one of claims 1-8, characterized in that: A limiting mechanism is provided on the bottom frame and / or the third side fence. When the third side fence is in use, the limiting mechanism is used to restrict the third side fence from rotating backward.