A folding shopping cart and storage case with a sliding cover

Abstract

This utility model discloses a folding shopping cart and storage box with a sliding cover, including a storage box, a pull rod, and wheels. The wheels are located at the bottom of the storage box. The storage box includes a box body and a cover. The box body includes a bottom plate, two folding side plates (left and right), a rear plate, and a front plate. The folding shopping cart of this utility model consists of a storage box, a pull rod, and wheels. The upper inner side of the left and right folding side plates of the storage box is provided with a horizontal sliding groove. The front plate is provided with an upper sliding groove and an extended sliding groove that connect with the horizontal sliding groove and extend forward beyond the front surface to form a recessed part. The front end of the cover is provided with sliding parts on both sides, which can move forward along the sliding groove to the extended sliding groove and then rotate 90° so that the cover is suspended and hidden in the recessed part. After folding, the cover is not exposed, making it more compact and convenient for storage and carrying. This technical means not only optimizes space utilization but also improves the portability of the shopping cart.

Description

Technical Field

[0001] This utility model relates to a storage box, and more particularly to a folding storage box and a folding shopping cart with a sliding cover; when the sliding cover is opened, the cover can be stored on the outside of the box. Background Technology

[0002] Foldable shopping carts are portable and practical storage tools widely used in daily life, supermarket shopping, travel, and other scenarios. Their core advantage lies in their ability to significantly reduce size through a folding structure, making them easy to carry and store, while they can be quickly unfolded to meet the needs of carrying items when in use.

[0003] When the lid is opened, one option is to store the lid inside the box; such as the storage box with an easily retractable lid, CN214241842U. CN220826815U is an example of a concealed shopping box.

[0004] Another type is to store the lid on the outside of the box, such as the folding storage box with an external lid, like CN220826749U; or the folding shopping cart, like CN220518310U.

[0005] The cover of this type of external shopping cart needs to switch between the horizontal top of the cart body and the vertical outer side of the cart body. This requires changing the position of the cover while simultaneously rotating it 90 degrees. A rotating mechanism needs to be installed between the cart body and the cover. Specifically, a groove is provided in the middle of the inner side of the cover, and a connection point is provided on the top of the front panel that mates with the groove.

[0006] The aforementioned rotating structure complicates the structure of the cover and the housing; at the same time, the protruding connecting part is also easily damaged by impact. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a folding shopping cart and storage box with a sliding cover.

[0008] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a folding shopping cart, including a storage box, a pull rod and wheels; the wheels are disposed at the bottom of the storage box; the storage box includes a box body and a cover plate, the box body includes a bottom plate, two folding side plates on the left and right, a rear plate and a front plate; the pull rod is disposed on the rear plate;

[0009] Each folding side panel has a horizontal sliding groove with an opening facing the inner space at its upper inner end; the front panel includes an upper sliding groove, a front surface, and two side portions; the upper sliding groove is connected to the horizontal sliding groove; the upper sliding groove extends forward beyond the front surface to form an extended sliding groove; the two side portions also extend beyond the front surface, thereby forming a recessed portion between the two side portions on the front side of the front panel; the side portions act as a front limiter on the front side of the upper sliding groove;

[0010] The cover plate includes a plate body, and the front ends of both sides of the plate body are provided with protruding sliding portions; the two sides of the plate body can be inserted into the horizontal sliding groove; when the cover plate slides forward until the sliding portion is located in the extended sliding groove, the cover plate can be rotated 90 degrees and then suspended in the recessed portion through the sliding portion.

[0011] A further preferred embodiment of this utility model is that the depth of the recess is greater than the thickness of the cover plate, and when the cover plate is in the recess, the outer surface of the cover plate is lower than the side of the front plate.

[0012] A further preferred embodiment of this utility model is as follows: the horizontal sliding groove includes a first bottom wall, a first side wall, and a first top wall; the upper sliding groove includes a second bottom wall, a second side wall, and a second top wall; the first bottom wall and the second bottom wall are connected, the first side wall and the second side wall are connected, and the first top wall and the second top wall are connected; the extended sliding groove includes a limiting bottom surface that restricts the downward movement of the sliding part, and a limiting vertical surface that restricts the forward movement of the sliding part.

[0013] A further preferred embodiment of this utility model is as follows: a first limiting protrusion is provided on the inner side of the lower end of the side portion, the first limiting protrusion being used to limit the lower end of the cover plate; correspondingly, a second limiting protrusion is provided on the outer surface of the cover plate, which corresponds to the first limiting protrusion.

[0014] A further preferred embodiment of this utility model is: a recessed handle is provided at the middle position of the front side of the plate.

[0015] Another preferred subject is: a storage box, including a box body and a cover, wherein the box body includes a bottom plate, two side plates, a rear plate and a front plate;

[0016] Each side plate has a horizontal sliding groove with an opening facing the inner space at its upper inner side; the front plate includes an upper sliding groove, a front surface, and two side portions; the upper sliding groove is connected to the horizontal sliding groove; the upper sliding groove extends forward beyond the front surface to form an extended sliding groove; the two side portions also extend beyond the front surface, thereby forming a recessed portion between the two side portions on the front side of the front plate; the side portions act as a front limit on the front side of the upper sliding groove;

[0017] The cover plate includes a plate body, and the front ends of both sides of the plate body are provided with protruding sliding portions; the two sides of the plate body can be inserted into the horizontal sliding groove; when the cover plate slides forward until the sliding portion is located in the extended sliding groove, the cover plate can be rotated 90 degrees and then suspended in the recessed portion through the sliding portion.

[0018] A further preferred embodiment of this utility model is that the depth of the recess is greater than the thickness of the cover plate, and when the cover plate is in the recess, the outer surface of the cover plate is lower than the side of the front plate.

[0019] A further preferred embodiment of this utility model is as follows: the horizontal sliding groove includes a first bottom wall, a first side wall, and a first top wall; the upper sliding groove includes a second bottom wall, a second side wall, and a second top wall; the first bottom wall and the second bottom wall are connected, the first side wall and the second side wall are connected, and the first top wall and the second top wall are connected; the extended sliding groove includes a limiting bottom surface that restricts the downward movement of the sliding part, and a limiting vertical surface that restricts the forward movement of the sliding part.

[0020] A further preferred embodiment of this utility model is as follows: a first limiting protrusion is provided on the inner side of the lower end of the side portion, the first limiting protrusion being used to limit the lower end of the cover plate; correspondingly, a second limiting protrusion is provided on the outer surface of the cover plate, which corresponds to the first limiting protrusion.

[0021] A further preferred embodiment of this utility model is: a recessed handle is provided at the middle position of the front side of the plate.

[0022] Compared with existing technologies, the advantages of this utility model are: 1. By designing the cover plate as a slidable structure that is hidden within the recessed part of the front panel, the cover plate can be completely stored within the recessed part of the front panel when the shopping cart is folded and stored, reducing the size of the shopping cart, making it more compact, and easier to store and carry. This design not only optimizes space utilization but also improves the portability of the shopping cart.

[0023] 2. The cover plate, through the cooperation of the horizontal and upper sliding grooves, can slide smoothly and be fixed in the recess. This design not only improves the stability of the cover plate but also makes the opening and closing operation smoother, reducing the inconvenience caused by the cover plate shaking or loosening. At the same time, the extended sliding groove design further limits the sliding range of the cover plate, ensuring that the cover plate will not accidentally slide out when stored, thus improving safety.

[0024] 3. Because the cover is hidden within the recess of the front panel when folded, it is greatly reduced from the influence of the external environment. This design not only protects the cover but also improves the durability of the shopping cart and extends its service life. Attached Figure Description

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0026] Figure 1 This is a schematic diagram of the overall structure of the folding shopping cart in this embodiment;

[0027] Figure 2 This is a schematic diagram of the folding shopping cart body structure in this embodiment;

[0028] Figure 3 This is a schematic diagram of the anatomical structure of the folding shopping cart body in this embodiment;

[0029] Figure 4 This embodiment uses a folding shopping cart. Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 This is a schematic diagram illustrating the process of the folding shopping cart starting to slide open in this embodiment;

[0031] Figure 6 This is a schematic diagram illustrating the sliding process of the folding shopping cart cover in this embodiment;

[0032] Figure 7 This is a schematic diagram of the folding shopping cart cover structure in this embodiment;

[0033] Figure 8 This embodiment uses a folding shopping cart. Figure 7 Enlarged view of point C in the middle;

[0034] Figure 9 A schematic diagram illustrating the process of the folding shopping cart lid beginning to fold down.

[0035] Figure 10 This is a structural diagram illustrating the process of the folding shopping cart cover falling down.

[0036] Figure 11 A schematic diagram of the combined structure of the folding shopping cart cover and front panel;

[0037] Figure 12 This embodiment uses a folding shopping cart. Figure 11 Enlarged view of section B in the middle. Detailed Implementation

[0038] A type of folding shopping cart, such as Figure 1As shown, the system is composed of three major functional modules: storage box 10, pull rod 20, and wheels 30, forming an integrated, foldable, and towable portable transportation system.

[0039] The storage box, as the core load-bearing unit of the vehicle, consists of a box body 11 and a cover plate 12. The two are connected by a sliding-flipping-hiding method, which can form a full opening at the top when unfolded and completely hide the cover plate when folded.

[0040] The box body 11 is formed by a bottom plate 111, two folding side plates 112 on the left and right, a rear plate 113 and a front plate 114. The bottom plate 111 is preferably selected to adopt a double-layer composite board structure. The inner layer is made of lightweight honeycomb core material to reduce weight, and the outer layer is made of wear-resistant PP layer to prevent water and dirt. Wheel mounting seats extend downward from the four corners of the bottom to form a high-rigidity force path with direct connection between the box and the wheel.

[0041] The folding side panels 112 consist of two sections connected by hinges on each side, allowing for a 90-degree rotation. The upper inner side has an inward-facing horizontal groove a, which also serves as a cover plate slide rail and side panel reinforcing rib. The rear panel 113 has an integrated telescopic tie rod 20 on its outer wall. The tie rod is preferably a multi-section aluminum alloy elliptical tube with an anodized surface. The rear panel also features die-cast transverse reinforcing ribs on its inner wall, which interlock with the dovetail groove of the base plate 111 to form a "T"-shaped closed frame, improving full-load torsional rigidity. The front panel 114 has an "I"-shaped cross-section. The central recess h serves as a cover plate storage cavity. The upper groove b seamlessly connects to the horizontal groove a, and the extended groove g cantilevers forward, forming a 90-degree rotation limit. The two side edges e also serve as anti-collision corner protectors, preferably with built-in shock-absorbing pads.

[0042] The pull rod 20 is preferably a three-section telescopic pull rod fixed in the embedded slide rail of the rear plate 113. After fully retracting, the top surface of the handle is flush with the upper edge of the rear plate 113. The handle is preferably integrally molded with rubber coating and has a built-in rebound button, which can complete unlocking-pulling-positioning within 1 second. The base of the pull rod is preferably bolted to the base plate 111 through a U-shaped cast aluminum adapter block, forming a three-point force closed loop of "rod-box-base plate", avoiding the problem of easy breakage at the base of traditional shopping cart pull rods. The wheels 30 adopt a 4-wheel layout. The front wheels are preferably 3-inch TPE silent universal wheels with built-in ball bearings and 360° rotation. The rear wheels are preferably 4-inch TPE directional wheels with anti-slip treads. The wheel frame is preferably an integral die-cast aluminum alloy.

[0043] The folding and storage mechanism involves folding the side panel 112 inward, bringing the bottom panel 111 and rear panel 113 closer together, and retracting the pull rod 20 back to slide forward on the cover 12 and flip downwards by 90° to embed into the recessed part h of the front panel. After folding, the outer surface of the cover is lower than the side edge e of the front panel, forming a completely flat hexahedron. It can be placed upright or horizontally in car trunks, subway luggage racks, home cabinets, and other scenarios.

[0044] Human-machine interface and scene adaptation: The 115-inch cover handle features a concave surface, conforming to the depth of finger grip and preventing snagging on clothing. The overall net weight is lightweight, allowing women to lift it with one hand. When unfolded, it can be pushed or pulled. It meets the needs of various scenarios such as supermarket shopping, camping transport, and mother and baby travel.

[0045] Through the above expansions and optimizations, the folding shopping cart, while ensuring structural strength and service life, achieves lightweighting, quiet operation, and zero external protrusions throughout the entire process of "folding, unfolding, and storing," significantly improving user experience and scenario adaptability.

[0046] like Figure 2 As shown, each of the two folding side panels 112 has a horizontal groove a with an opening facing the inside of the box at its upper inner side. This groove also serves as a reinforcing rib for the side panel, guiding the movement of the cover and improving lateral rigidity. The front panel 114 is preferably integrally die-cast in a transverse "I" shape, with the middle section being the front surface c and the two wings being forward-protruding side parts e, forming natural anti-collision corner guards. The upper groove b is coaxially connected to the horizontal groove a and has the same cross-section, ensuring stepless transition of the cover sliding. The groove b continues to cantilever forward to form an extended groove g, the end of which is provided with a limiting bottom surface and a limiting vertical surface, providing dual limiting for the downward and forward movement of the sliding part of the cover. The two side parts e also cantilever forward and exceed the front surface c, thereby constructing a concave storage cavity h between them, with a depth slightly greater than the thickness of the cover, so that the cover can be completely hidden after being rotated 90° and the outer surface is lower than the side parts e, avoiding any protruding bumps. The "I"-shaped cross section of the front panel 114 combines the functions of sliding groove, limiting, and structural bearing, providing a continuous and smooth sliding track while significantly improving the overall bending and torsional stiffness through the closed cavity, thus achieving both lightweight and long service life.

[0047] like Figures 3 to 12As shown, the cover plate 12 consists of a plate body 121 and sliding parts 122 formed on both front ends to form an integral sliding unit. The left and right side edges of 121 fit precisely into the horizontal sliding groove a, forming a "hidden rail" fit, eliminating the visual abruptness of exposed guide rails and preventing dust accumulation. When the plate body 121 is gently pushed forward to the end of the extended sliding groove g, the sliding part 122, under the combined action of bidirectional limiting surfaces (i.e., limiting downward sinking and limiting forward thrust), becomes an instantaneous rotation axis, allowing the plate body 121 to rotate downward by 90° and be suspended in the recess h of the front plate 114 using the sliding part 122 as a hook. The depth of the recess h is greater than the thickness of the plate body 121, and after storage, the outer surface of the plate body is slightly lower than the outer surface of the side part e, forming a completely flush "zero protrusion" appearance; at the same time, the concealment between the plate body 121 and the front surface c is very small, which not only prevents the risk of finger pinching but also avoids shaking and abnormal noise during transportation. The three-step "slide, turn, hide" action is completed in one smooth motion, making the entire process easy and quick, and significantly reducing the overall volume of the case after folding. The cover and front panel share the same "I"-shaped cross-section, creating a visually continuous and clean transition between blocks, balancing compact structure, portability, and modern aesthetics.

[0048] like Figure 2 As shown, the horizontal slide rail a and the upper slide rail b together form a composite slide rail that is "fully enclosed and stepless". The horizontal slide rail a has a C-shaped closed cross section, and is formed by the first bottom wall a1, the first side wall a2, and the first top wall a3, creating a three-sided encircling guide cavity. The upper slide rail b has a C-shaped cross section that is mirror-symmetrical to it, and is composed of the second bottom wall b1, the second side wall b2, and the second top wall b3. The two slide rails are fitted with a tongue and groove joint with mortise and tenon precision at their mating surfaces. The connection between the first bottom wall a1 and the second bottom wall b1 is smooth, and the first side wall a2 and the second side wall b2 are of uniform thickness for easy alignment, ensuring that the slide rail is stepless, wobble-free, and noiseless throughout its entire length. The sliding feel of the cover plate is as smooth as a drawer. The extended slide groove g forms an "L"-shaped bidirectional limiting seat at the cantilever end. The bottom surface g1 is preferably slightly inclined, providing a sinking stop point when the cover plate flips and using gravity self-locking to prevent accidental slippage. The vertical surface g2 is preferably embedded with an elastic buffer pad, which absorbs the impact and rebounds silently when the sliding part 122 hits the ground. A rounded transition is added at the junction of the two limiting surfaces to eliminate stress concentration and extend service life. The entire slide rail system is hidden within the box body outline, with no protruding screws or exposed guide rails on the outer surface. This not only makes the overall appearance of the vehicle extremely simple, but also allows the cover plate to complete the three-step action of "sliding forward, flipping, and hiding" in one go, smoothly and without obstruction.

[0049] like Figure 12As shown, on the lower inner side of both sides e of the front panel 114, a first limiting protrusion e1 is preferably integrally formed. This protrusion preferably has a composite contour of ramp and right-angle anti-reverse, which can provide smooth guidance when the cover 12 is flipped down and form a mechanical self-locking after it is in place. Mirroring this, a second limiting protrusion f1 is provided at the lower outer surface of the cover 12. When the cover is flipped 90° and inserted into the recess h, f1 can better limit the cover 12 through e1, so that the cover does not wobble or loosen. Both protrusions are located within the recess h and are not exposed, avoiding scratching pedestrians or vehicle interiors.

[0050] The front center of panel 121 is further recessed to form a concave handle 115. The handle depth is preferably characterized by a large inner rounded corner, allowing for a four-finger grip. The surface is preferably treated with a laser-etched finish, preventing slippage even with wet hands. When the cover is fully retracted, pulling the entire handle system does not add any external attachments, maintaining the minimalist hexahedral shape even when folded. This further enhances storage density and portability.

[0051] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0052] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it will not be further defined or explained in subsequent figures. For clarity of the structure, the proportions of the components in the figures are not actual proportions.

[0053] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. 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. Similarly, "first" and "second" are only for ease of understanding and have no other directional meaning, and cannot be considered as limitations on this utility model.

[0054] This invention describes a folding shopping cart and storage box with a sliding cover, as provided by this utility model. Specific examples are used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments are only for the purpose of helping to understand this utility model and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A folding shopping cart with a sliding cover, characterized in that: The device includes a storage box, a pull rod, and wheels; the wheels are located at the bottom of the storage box; the storage box includes a box body and a cover, the box body includes a bottom plate, two folding side plates (left and right), a rear plate, and a front plate; the pull rod is located on the rear plate. Each folding side panel has a horizontal sliding groove with an opening facing the inner space at its upper inner end; the front panel includes an upper sliding groove, a front surface, and two side portions; the upper sliding groove is connected to the horizontal sliding groove; the upper sliding groove extends forward beyond the front surface to form an extended sliding groove; the two side portions also extend beyond the front surface, thereby forming a recessed portion between the two side portions on the front side of the front panel; the side portions act as a front limiter on the front side of the upper sliding groove; The cover plate includes a plate body, and the front ends of both sides of the plate body are provided with protruding sliding portions; the two sides of the plate body can be inserted into the horizontal sliding groove; when the cover plate slides forward until the sliding portion is located in the extended sliding groove, the cover plate can be rotated 90 degrees and then suspended in the recessed portion through the sliding portion.

2. A folding shopping cart with a sliding cover according to claim 1, characterized in that: The depth of the recess is greater than the thickness of the cover plate. When the cover plate is in the recess, the outer surface of the cover plate is lower than the side of the front plate.

3. A folding shopping cart with a sliding cover according to claim 1, characterized in that: The horizontal sliding groove includes a first bottom wall, a first side wall, and a first top wall; the upper sliding groove includes a second bottom wall, a second side wall, and a second top wall; the first bottom wall and the second bottom wall are connected, the first side wall and the second side wall are connected, and the first top wall and the second top wall are connected; the extended sliding groove includes a limiting bottom surface that restricts the downward movement of the sliding part, and a limiting vertical surface that restricts the forward movement of the sliding part.

4. A folding shopping cart with a sliding cover according to claim 1, characterized in that: A first limiting protrusion is provided on the inner side of the lower end of the side portion, which is used to limit the lower end of the cover plate; correspondingly, a second limiting protrusion is provided on the outer surface of the cover plate, which corresponds to the first limiting protrusion.

5. A folding shopping cart with a sliding cover according to claim 1, characterized in that: The front side of the plate has a recessed handle at the middle position.

6. A storage box, characterized in that: The enclosure includes a housing and a cover plate. The housing includes a bottom plate, two side plates (left and right), a rear plate, and a front plate. Each side plate has a horizontal sliding groove with an opening facing the inner space at its upper inner side; the front plate includes an upper sliding groove, a front surface, and two side portions; the upper sliding groove is connected to the horizontal sliding groove; the upper sliding groove extends forward beyond the front surface to form an extended sliding groove; the two side portions also extend beyond the front surface, thereby forming a recessed portion between the two side portions on the front side of the front plate; the side portions act as a front limit on the front side of the upper sliding groove; The cover plate includes a plate body, and the front ends of both sides of the plate body are provided with protruding sliding portions; the two sides of the plate body can be inserted into the horizontal sliding groove; when the cover plate slides forward until the sliding portion is located in the extended sliding groove, the cover plate can be rotated 90 degrees and then suspended in the recessed portion through the sliding portion.

7. The storage box according to claim 6, characterized in that: The depth of the recess is greater than the thickness of the cover plate. When the cover plate is in the recess, the outer surface of the cover plate is lower than the side of the front plate.

8. The storage box according to claim 6, characterized in that: The horizontal sliding groove includes a first bottom wall, a first side wall, and a first top wall; the upper sliding groove includes a second bottom wall, a second side wall, and a second top wall; the first bottom wall and the second bottom wall are connected, the first side wall and the second side wall are connected, and the first top wall and the second top wall are connected; the extended sliding groove includes a limiting bottom surface that restricts the downward movement of the sliding part, and a limiting vertical surface that restricts the forward movement of the sliding part.

9. The storage box according to claim 6, characterized in that: A first limiting protrusion is provided on the inner side of the lower end of the side portion, which is used to limit the lower end of the cover plate; correspondingly, a second limiting protrusion is provided on the outer surface of the cover plate, which corresponds to the first limiting protrusion.

10. The storage box according to claim 6, characterized in that: The front side of the plate has a recessed handle at the middle position.

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