Foldable storage rack

Abstract

The present invention discloses a foldable storage rack, comprising: a side frame, a connecting arm and a shelf. When the foldable storage rack is in an unfolded state, it can meet the storage needs of users. When transporting or idle, the side frame, the connecting arm and the shelf of the foldable storage rack are linked to complete the folding process. The foldable storage rack in the folded state occupies a small space and is convenient for placement and transportation. In addition, during the unfolding or folding process, there is no need to disassemble and assemble parts, which is conducive to preventing the loss of parts.

Description

Technical Field

[0001] The invention relates to the field of household articles, in particular to a foldable storage rack. Background Art

[0002] Traditional storage racks generally include two side frames and multiple layers connected horizontally to the side frames at intervals. However, since such traditional storage racks are mainly welded and cannot be disassembled, for manufacturers, there are problems such as cumbersome welding procedures and large transportation space, which increase costs. For users, the disassembly form makes it troublesome to install such storage racks, and there is even a risk of parts loss, which may lead to the problem of being unable to install. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0004] To this end, the present invention provides a foldable storage rack.

[0005] The foldable storage rack according to the first aspect of the present invention comprises: a side frame, a connecting arm and a shelf. The side frame comprises a first side frame and a second side frame; guide grooves are respectively arranged on the rear sides of the first side frame and the second side frame; the guide grooves are in the shape of long strips extending in the vertical direction; the connecting arm is located at the rear side of the foldable storage rack and comprises a first connecting arm and a second connecting arm; one end of the first connecting arm and one end of the second connecting arm are respectively hinged to a sliding shaft; the first connecting arm is intersected and connected with the second connecting arm; the sliding shaft is embedded in the guide groove and slides along the guide groove, and when the sliding shaft slides to the two ends of the guide groove, the foldable storage rack is in an unfolded state or a folded state; the other end of the first connecting arm is hinged to the second side frame; the other end of the second ... The first side frame is hinged; when the foldable storage rack is in the expanded state, the first side frame and the second side frame are respectively located at the left and right sides of the foldable storage rack; when the foldable storage rack is in the folded state, the first side frame and the second side frame are close to each other; the shelf comprises a left shelf and a right shelf, one end of the left shelf is hinged to one end of the right shelf; the other end of the left shelf is hinged to the first side frame, and the other end of the right shelf is hinged to the second side frame; when the foldable storage rack is in the expanded state, the left shelf and the right shelf are both located in a horizontal position; when the foldable storage rack is in the folded state, the left shelf and the right shelf rotate to be close to each other.

[0006] According to the foldable storage rack of some embodiments of the present invention, the guide grooves are respectively located at the upper parts of the first side frame and the second side frame; when the sliding shaft slides to the lower end of the guide groove, the foldable storage rack is in an unfolded state; when the sliding shaft slides to the upper end of the guide groove, the foldable storage rack is in a folded state.

[0007] According to some embodiments of the foldable storage rack of the present invention, there are several shelves distributed in the vertical direction; the foldable storage rack further includes: a guide rod; the guide rod is located at the rear side of the foldable storage rack and connected to the shelves.

[0008] According to some embodiments of the present invention, the foldable storage rack also includes: a first locking device or a second locking device, which is used to lock the connecting arm when the foldable storage rack is in the unfolded state; the first locking device is located at the rear side of the foldable storage rack, and includes a first limiting rod, a first locking plate and an adjusting member; one end of the first limiting rod is fixed to the guide rod; one end of the adjusting member and one end of the first locking plate are hinged on the connecting arm; when locked, the other end of the first locking plate is snap-connected with the other end of the first limiting rod; the adjusting member is used to adjust the tightness of the snap-connection between the other end of the first locking plate and the other end of the first limiting rod; the second locking device is located at the rear side of the foldable storage rack, and includes a second limiting rod and a second locking plate; one end of the second locking plate is hinged on the guide rod; one end of the second limiting rod is fixed to the connecting arm; when locked, the other end of the second locking plate is snap-connected with the other end of the second limiting rod.

[0009] The foldable storage rack according to some embodiments of the present invention further includes: a top plate; the top plate is located at the upper end of the foldable storage rack; one side of the top plate is hinged or detachably snap-connected to one side of the side frame, and the top plate can be flipped up and down.

[0010] According to some embodiments of the present invention, the foldable storage rack further includes a support rod and a suspension device; the top plate is connected to one side of the side frame through the suspension device; one end of the support rod is clamped on the top plate, and the other end is clamped on one side of the side frame for supporting the top plate.

[0011] According to some embodiments of the foldable storage rack of the present invention, the hanging device includes a groove and a hanging rod; the groove is located on one side of the top plate; one end of the hanging rod is fixed to one side of the side frame, and the other end is snap-connected to the groove.

[0012] The foldable storage rack according to some embodiments of the present invention further includes: casters; there are a plurality of casters, which are respectively located at the lower ends of the first side frame and the second side frame.

[0013] The foldable storage rack according to some embodiments of the present invention further includes: a screw rod; the screw rod is threadedly connected to the lower end of the guide rod for supporting the shelf.

[0014] The foldable storage rack according to some embodiments of the present invention further includes: a third locking device, which is used to lock the side frame when the foldable storage rack is in a folded state; the third locking device includes a third locking plate and a third limiting rod; one end of the third locking plate and one end of the third limiting rod are respectively fixed to the first side frame and the second side frame, and when locked, the other end of the third locking plate is engaged and connected with the other end of the third limiting rod.

[0015] The foldable storage rack according to the embodiment of the present invention has at least the following beneficial effects: when the foldable storage rack is in the unfolded state, it can meet the storage needs of the user; when it is transported or idle, the side frames, connecting arms and shelves of the foldable storage rack can jointly complete the folding process; the foldable storage rack in the folded state occupies a small space and is convenient for placement and transportation; in addition, during the unfolding or folding process, there is no need to disassemble and assemble parts, which is conducive to preventing the loss of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following is a further description with reference to the accompanying drawings and examples.

[0017] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0018] Figure 2 is a schematic structural diagram of an embodiment of the present invention;

[0019] Figure 3 is a schematic structural diagram of an embodiment of the present invention;

[0020] Figure 4 is a schematic diagram of the connection structure between the side frame and the connecting arm of an embodiment of the present invention;

[0021] Figure 5 is a schematic diagram of a structure associated with an embodiment of the present invention;

[0022] Figure 6 is a schematic structural diagram of a locking device according to an embodiment of the present invention;

[0023] Figure 7 is a schematic structural diagram of an embodiment of the present invention;

[0024] Figure 8 is a schematic structural diagram of an embodiment of the present invention;

[0025] Fig. 9 It is a schematic structural diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0028] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] A first embodiment of the present invention is a foldable storage rack, comprising: a side frame 100 , a connecting arm 200 and a shelf 300 . The side frame 100 includes a first side frame 110 and a second side frame 120; guide grooves 130 are respectively provided on the rear sides of the first side frame 110 and the second side frame 120; the guide grooves 130 are long strips extending in the vertical direction; the connecting arm 200 is located at the rear side of the foldable storage rack, and includes a first connecting arm 210 and a second connecting arm 220; one end of the first connecting arm 210 and one end of the second connecting arm 220 are respectively hinged to a sliding shaft 230; the first connecting arm 210 and the second connecting arm 220 are intersectingly connected; the sliding shaft 230 is embedded in the guiding groove 130 and slides along the guiding groove 130, and when the sliding shaft 230 slides to the two ends of the guiding groove 130, the foldable storage rack is in an unfolded state or a folded state; the other end of the first connecting arm 210 is hinged to the second side frame 120; the second connecting arm 2 The other end of 20 is hinged to the first side frame 110; when the foldable storage rack is in the unfolded state, the first side frame 110 and the second side frame 120 are respectively located on the left and right sides of the foldable storage rack; when the foldable storage rack is in the folded state, the first side frame 110 and the second side frame 120 are close to each other; the shelf 300 includes a left shelf 310 and a right shelf 320, one end of the left shelf 310 is hinged to one end of the right shelf 320; the other end of the left shelf 310 is hinged to the first side frame 110, and the other end of the right shelf 320 is hinged to the second side frame 120; when the foldable storage rack is in the unfolded state, the left shelf 310 and the right shelf 320 are both located in a horizontal position; when the foldable storage rack is in the folded state, the left shelf 310 and the right shelf 320 rotate to be close to each other.

[0032] It is understandable that the shelf 300 is mainly used for placing articles. Therefore, when the foldable storage rack is in the unfolded state, when the left shelf 310 and the right shelf 320 of the shelf 300 are both in a horizontal position, they can provide a supporting surface for placing articles.

[0033] like Figure 1 As shown, when the foldable storage rack is in the unfolded state; Fig. 9 As shown, the foldable storage rack is in a folded state; Figure 2As shown, the foldable storage rack is in a transition state between the folded state and the unfolded state. It can be understood that in the above embodiment, in the transition state between the unfolded state and the folded state of the foldable storage rack, the sliding shaft 230 hinged at one end of the first connecting arm 210 and one end of the second connecting arm 220 slides in the guide groove 130 of the side frame 100. Accordingly, due to the structure of the side frame 100, the connecting arm 200, and the shelf 300 and the connection relationship therebetween, the side frame 100, the connecting arm 200, and the shelf 300 are mutually related to each other, and finally the foldable storage rack is switched between the unfolded state and the folded state.

[0034] It is understood that the guide groove 130 may be integrated with the side frame 100, or may be a component fixedly mounted on the side frame 100. Specifically, when the guide groove 130 is integrated with the side frame 100, as shown in FIG. Figure 4 As shown, the guide groove 130 can be a long strip-shaped groove extending in the vertical direction on the first side frame 110 and the second side frame 120. In addition, a long strip-shaped hollow structure extending in the vertical direction can also be provided on the first side frame 110 and the second side frame 120. The guide groove 130 is a component fixedly mounted on the side frame 100, such as Figure 1 , Figure 2 As shown. It can be understood that Figure 1 , Figure 2 The guide groove 130 shown is a component fixedly mounted on the side frame 100, which is beneficial to reducing the thickness of the side frame and making the foldable storage rack more lightweight.

[0035] It can be understood that, in the above embodiment, one end of the connecting arm 200 is slidably connected to one end of the side frame 100, and in the process of sliding one end of the connecting arm 200 relative to the side frame 100 in the vertical direction, the one end of the connecting arm 200 can also rotate relative to the side frame 100 in the rear plane of the foldable storage rack. Therefore, the specific structure of the sliding connection between one end of the connecting arm 200 and one end of the side frame 100 can be easily associated by those skilled in the art. Figure 5 The structure shown. Figure 5 As shown, one end of the connecting arm 200 is hinged on the movable end 231 of the sliding guide rail, and the fixed end 131 of the sliding guide rail is located on the side frame 100. It can be understood that the two ends of the fixed end 131 of the sliding guide rail in the vertical direction should have limiting devices that limit the movable end 231 of the sliding guide rail to slide within a specific range in the vertical direction. However, such a structure will increase the cost of production to a certain extent. It can be seen that the connection structure of the connecting arm 200 and the side frame 100 of the first aspect of the present invention is better.

[0036] It is understandable that the guide groove 130 may be located at the upper part of the first side frame 110 and the second side frame 120. Accordingly, the hinged joints of the first connecting arm 210, the second connecting arm 220, the second side frame 120 and the first side frame 110 are located below the guide groove 130. Figure 3 As shown, the guide groove 130 may be located at the lower portion of the first side frame 110 and the second side frame 120 , and accordingly, the hinged joints of the first connecting arm 210 , the second connecting arm 220 and the second side frame 120 and the first side frame 110 are located above the guide groove 130 .

[0037] Now, how the foldable storage rack can switch between the unfolded state and the folded state is described in detail with reference to the situation that the guide groove 130 is located at the upper part of the first side frame 110 and the second side frame 120 .

[0038] In some specific embodiments of the present invention, the guide groove 130 is respectively located at the upper part of the first side frame 110 and the second side frame 120; when the sliding shaft 230 slides to the lower end of the guide groove 130, the foldable storage rack is in an unfolded state; when the sliding shaft 230 slides to the upper end of the guide groove 130, the foldable storage rack is in a folded state.

[0039] like Figure 1 As shown, the foldable storage rack is in the unfolded state; Fig. 9 As shown, the foldable storage rack is in a folded state; Figure 2 As shown in FIG. 1 , the foldable storage rack is in a transition state between the folded state and the unfolded state. When the foldable storage rack is in the unfolded state, as shown in FIG. Figure 1 As shown, the slide shaft 230 is located at the lower end of the guide slot 130; the first side frame 110 and the second side frame 120 are respectively located on the left and right sides of the foldable storage rack; the left shelf 310 and the right shelf 320 are both located in a horizontal position. Figure 2 As shown, driven by the first connecting arm 210 and the second connecting arm 220, the first side frame 110 and the second side frame 120 move closer to each other; the left shelf 310 and the right shelf 320 are respectively hinged to the first side frame 110 and the second side frame 120. Driven by the first side frame 110 and the second side frame 120 moving closer to each other, the left shelf 310 and the right shelf 320 rotate along their hinges. It can be understood that the hinged function between the left shelf 310 and the right shelf 320 is to enable the shelf 300 to fold as the first side frame 110 and the second side frame 120 move closer to each other. When the sliding shaft 230 slides upward from the lower end of the guide slot 130 to the upper end of the guide slot 130, as shown in FIG. Fig. 9As shown, the first side frame 110 and the second side frame 120 are translated to approach each other, and the left shelf 310 and the right shelf 320 are rotated to approach each other.

[0040] Therefore, when the foldable storage rack is in the unfolded state, it can meet the storage needs of the user. When it is transported or idle, the side frame 100, the connecting arm 200 and the shelf 300 of the foldable storage rack jointly complete the folding process. The foldable storage rack in the folded state occupies a small space and is convenient for placement and transportation. In addition, there is no need to disassemble and assemble parts during the unfolding or folding process, which is conducive to preventing the loss of parts.

[0041] In some specific embodiments of the present invention, the shelves 300 are multiple and distributed in the vertical direction; the foldable storage rack further includes: a guide rod 400; the guide rod 400 is located at the rear side of the foldable storage rack and connected to the shelves 300. Figure 1 , Figure 2 As shown, there are several shelves 300 distributed in the vertical direction, and the foldable storage rack has several layers of storage space; especially for the foldable storage rack with multiple layers of storage space, the guide rod 400 connects the several shelves 300 together, and the movements of the several shelves 300 during folding or unfolding are consistent, rather than independent and irregular movements, which is conducive to making the foldable storage rack more convenient and durable during use.

[0042] In some specific embodiments of the present invention, the first locking device 510 or the second locking device 520 is further included, which is used to lock the connecting arm 200 when the foldable storage rack is in the unfolded state; Figure 1 As shown, the first locking device 510 is located at the rear side of the foldable storage rack, and includes a first limiting rod 511, a first locking piece 512 and an adjusting member 513; one end of the first limiting rod 511 is fixed to the guide rod 400; one end of the adjusting member 513 and one end of the first locking piece 512 are hinged on the connecting arm 200; when locked, the other end of the first locking piece 512 is snap-connected with the other end of the first limiting rod 511; the adjusting member 513 is used to adjust the tightness of the snap-connection between the other end 512 of the first locking piece and the other end of the first limiting rod 511; as shown Figure 6 As shown, the second locking device 520 is located at the rear side of the foldable storage rack, and includes a second limiting rod 521 and a second locking plate 522; one end of the second locking plate 522 is hinged on the guide rod 400; one end of the second limiting rod 521 is fixed on the connecting arm 200; when locked, the other end of the second locking plate 522 is engaged and connected with the other end of the second limiting rod 521.

[0043] It is understandable that if Figure 1The first locking device 510 shown and Figure 6 The second locking device 520 shown is used to lock the connecting arm 200 when the foldable storage rack is in the unfolded state, so that the entire foldable storage rack can remain in the unfolded state, specifically, to prevent the sliding shaft 230 from sliding upward from the lower end of the guide groove 130 due to the placement of objects or collision with people. It can be understood that when the sliding shaft 230 is located at the lower end of the guide groove 130, the lower end of the guide groove 130 can prevent the sliding shaft 230 from sliding downward, but at this time, the guide groove 130 cannot prevent the sliding shaft 230 from sliding upward from the lower end, and the first locking device 510 and the second locking device 520 respectively use different specific structures to lock the connecting arm 200, thereby preventing the sliding shaft 230 from sliding upward from the lower end. In particular, the number of components of the second locking device 520 is less than that of the first locking device 510, and the second locking device 520 is more conducive to compactness of the arrangement.

[0044] In some specific embodiments of the present invention, Figure 1 , Figure 7 As shown, the foldable storage rack further includes: a top plate 600; the top plate 600 is located at the upper end of the foldable storage rack; one side of the top plate 600 is hinged or detachably connected to one side of the side frame 100, and the top plate 600 can be turned upside down. The structure of the top plate 600 is conducive to the user to choose whether to use the top plate 600 according to their own needs. If the top plate 600 is not used, as shown in FIG. Figure 7 As shown, the top plate 600 can be snap-connected to one side of the side frame 100 to prevent the top plate 600 from being lost due to random placement. It is understandable that one side of the top plate 600 can also be hinged to one side of the side frame 100. If the top plate 600 is not in use, the top plate 600 can be flipped to the side of the side frame 100. In addition, one side of the top plate 600 can also be hinged to the side of the side frame 100. Figure 1 The snap-on connection mechanism 630 shown is detachably snap-connected to one side of the side frame 100. When the top plate 600 is in use, the snap-on connection mechanism 630 can be used to lock the top plate 600, which helps prevent the shelf 300 from folding due to external force. When the top plate 600 is not in use, it can be detachably snap-connected to one side of the side frame 100 through the above-mentioned snap-on connection mechanism 630.

[0045] In some specific embodiments of the present invention, Figure 8As shown, it also includes a support rod 610 and a suspension device 620; the top plate 600 is connected to one side of the side frame 100 through the suspension device 620; one end of the support rod 610 is clamped on the top plate 600, and the other end is clamped on one side of the side frame 100 to support the top plate 600. This is another way to place the top plate 600, providing more choices for users. Users can choose whether to use the top plate 600 according to their own needs. If the top plate 600 is not used, Figure 8 As shown, the top plate 600 can be connected to the side frame 100 through the support rod 610 and the suspension device 620, which can prevent the top plate 600 from being lost due to being placed randomly.

[0046] In some specific embodiments of the present invention, Figure 1 , Figure 2 As shown, the foldable storage rack further includes casters 700; the casters 700 are multiple and are respectively located at the lower ends of the first side frame 110 and the second side frame 120, so as to facilitate the movement of the foldable storage rack.

[0047] In some specific embodiments of the present invention, Figure 7 As shown, the foldable storage rack further comprises a screw rod 410; the screw rod 410 is threadedly connected to the lower end of the guide rod 400 to support the shelf 300. In the case where the casters 700 are installed or not installed, the bottom height of the foldable storage rack is different. By rotating the screw rod 410, the shelf 300 can still be supported at the above different heights.

[0048] In some specific embodiments of the present invention, Fig. 9 As shown, it also includes: a third locking device 140, which is used to lock the side frame 100 when the foldable storage rack is in a folded state; the third locking device 140 includes a third locking piece 141 and a third limiting rod 142; one end of the third locking piece 141 and one end of the third limiting rod 142 are respectively fixed to the first side frame 110 and the second side frame 120, and when locked, the other end of the third locking piece 141 is engaged with the other end of the third limiting rod 142. It can be understood that the specific installation position of the third locking device 140 can be on the upper, lower, front and rear sides of the first side frame 110 and the second side frame 120. The provision of the third locking device 140 is conducive to ensuring that the foldable storage rack is in a folded state during transportation and placement.

[0049] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A foldable storage rack, characterized in that: include: A side frame (100) comprises a first side frame (110) and a second side frame (120); guide grooves (130) are respectively provided on the rear side surfaces of the first side frame (110) and the second side frame (120); the guide grooves (130) are in the shape of long strips extending in the vertical direction; the guide grooves (130) are located at the upper parts of the first side frame (110) and the second side frame (120); or the guide grooves (130) are located at the lower parts of the first side frame (110) and the second side frame (120); The connecting arm (200) is located at the rear side of the foldable storage rack and comprises a first connecting arm (210) and a second connecting arm (220); one end of the first connecting arm (210) and one end of the second connecting arm (220) are respectively hinged to a sliding shaft (230); the first connecting arm (210) and the second connecting arm (220) are intersectingly connected; the sliding shaft (230) is embedded in the guide groove (130) and slides along the guide groove (130); when the sliding shaft (230) slides to the two ends of the guide groove (130), the foldable storage rack is The foldable storage rack is in an unfolded state or a folded state; the other end of the first connecting arm (210) is hinged to the second side frame (120); the other end of the second connecting arm (220) is hinged to the first side frame (110); when the foldable storage rack is in an unfolded state, the first side frame (110) and the second side frame (120) are respectively located on the left and right sides of the foldable storage rack; when the foldable storage rack is in a folded state, the first side frame (110) and the second side frame (120) are close to each other; The shelf (300) comprises a left shelf (310) and a right shelf (320), one end of the left shelf (310) being hinged to one end of the right shelf (320); the other end of the left shelf (310) being hinged to the first side frame (110), and the other end of the right shelf (320) being hinged to the second side frame (120); when the foldable storage rack is in an unfolded state, the left shelf (310) and the right shelf (320) are both in a horizontal position; when the foldable storage rack is in a folded state, the left shelf (310) and the right shelf (320) are rotated to be close to each other; The shelves (300) are in multiple numbers and are distributed in the vertical direction; the foldable storage rack further comprises: a guide rod (400); The guide rod (400) is located at the rear side of the foldable storage rack and is connected to the shelf (300); Also includes: a screw (410); The screw rod (410) is threadedly connected to the lower end of the guide rod (400) and is used to support the shelf (300); It also includes: a first locking device (510) for locking the connecting arm (200) when the foldable storage rack is in an unfolded state; The first locking device (510) is located at the rear side of the foldable storage rack, and comprises a first limiting rod (511), a first locking plate (512) and an adjusting member (513); one end of the first limiting rod (511) is fixed to the guide rod (400); one end of the adjusting member (513) and one end of the first locking plate (512) are hinged to the connecting arm (200); when locked, the other end of the first locking plate (512) is snap-connected with the other end of the first limiting rod (511); the adjusting member (513) is used to adjust the tightness of the snap-connection between the other end of the first locking plate (512) and the other end of the first limiting rod (511).

2. A foldable storage rack according to claim 1, characterized in that: The guide grooves (130) are respectively located on the upper parts of the first side frame (110) and the second side frame (120); When the sliding shaft (230) slides to the lower end of the guide groove (130), the foldable storage rack is in an unfolded state; when the sliding shaft (230) slides to the upper end of the guide groove (130), the foldable storage rack is in a folded state.

3. A foldable storage rack according to claim 1, characterized in that: Also includes: Top plate (600); The top plate (600) is located at the upper end of the foldable storage rack; one side of the top plate (600) is hingedly or detachably snap-connected to one side of the side frame (100), and the top plate (600) can be turned upside down.

4. A foldable storage rack according to claim 3, characterized in that: Also includes a support rod (610) and a suspension device (620); The top plate (600) is connected to one side of the side frame (100) via the suspension device (620); one end of the support rod (610) is clamped on the top plate (600), and the other end is clamped on one side of the side frame (100), for supporting the top plate (600).

5. A foldable storage rack according to claim 4, characterized in that: The hanging device (620) comprises a groove (621) and a hanging rod (622); The groove (621) is located on one side of the top plate (600); one end of the hanging rod (622) is fixed on one side of the side frame (100), and the other end is snap-connected to the groove (621).

6. A foldable storage rack according to claim 1, characterized in that: Also includes: Casters (700); There are a plurality of casters (700), which are respectively located at the lower ends of the first side frame (110) and the second side frame (120).

7. The foldable storage rack according to claim 1, characterized in that: Also includes: A third locking device (140) is used to lock the side frame (100) when the foldable storage rack is in a folded state; The third locking device (140) comprises a third locking plate (141) and a third limiting rod (142); one end of the third locking plate (141) and one end of the third limiting rod (142) are respectively fixed to the first side frame (110) and the second side frame (120); when locking, the other end of the third locking plate (141) is engaged and connected with the other end of the third limiting rod (142).

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