A folding shopping cart

Abstract

The utility model belongs to the technical field of shopping cart relates to a folding shopping cart, including bottom plate, apron, front side plate, back side plate, left side plate and right side plate, left side plate and right side plate all include a pair of folding plate of interlinking, the bottom of bottom plate is provided with a plurality of universal wheel, front side plate and back side plate are provided with front and back asymmetric pull rod system: U -shaped pull rod, install in back side plate, contain two parallel slide bars perpendicular to bottom plate and connect two parallel slide bars top end's transverse handle, parallel slide bar realizes telescopic through the vertical slide groove on back side plate, T -shaped push rod, install in front side plate, contain a center slide bar perpendicular to bottom plate and connect center slide bar top end's transverse push hand, center slide bar realizes telescopic through the vertical slide groove on front side plate. The folding shopping cart provided by the utility model can be conveniently pushed and pulled, and its use scene is expanded.

Description

Technical Field

[0001] This utility model belongs to the technical field of shopping carts, and relates to a folding shopping cart. Background Technology

[0002] In daily life and business settings, foldable shopping carts have become an important tool for consumers to transport goods over short distances due to their portability and space-saving features.

[0003] Chinese utility model patent CN210083268U (publication date: 2020.02.18) discloses a portable folding shopping cart, including an upward-opening base, universal wheels at the lower end of the base, push rods on the side of the base, a base plate and several side plates arranged circumferentially around the base plate, a rotating part at one end of the base plate, a limiting part at the lower end of the side plates, a rotating groove corresponding to the rotating part on the inner wall of the side plate opposite to the push rod, the rotating part being rotatably disposed in the rotating groove, and two side plates adjacent to the push rod being folding side plates, each folding side plate including a first folding plate and a second folding plate hinged to each other, the first folding plate and the second folding plate being hinged to the adjacent side plates, pushing the base plate upward and pushing the junction of the first folding plate and the second folding plate to fold inward into the base until the adjacent side plates of the folding side plates are in contact with each other.

[0004] The aforementioned folding shopping cart uses a single-lever structure and achieves push-pull operation through a telescopic function. While this single-lever structure meets basic usage requirements, it has significant limitations in practical applications: pulling and pushing are two indispensable operations for moving the shopping cart, with fundamentally different behavioral patterns and force characteristics. Pulling is suitable for long-distance straight-line movement, while pushing facilitates precise control in narrow spaces, real-time monitoring of item status, and handling inclines. However, pushing and pulling differ fundamentally in the direction of force, body posture, and stability requirements, and the physical structure of a single lever cannot simultaneously optimize and adapt to both operation modes. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a foldable shopping cart that allows for convenient push-pull operation and expands its application scenarios.

[0006] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:

[0007] A folding shopping cart includes a base plate, a cover plate, a front side plate, a rear side plate, a left side plate, and a right side plate. The left and right side plates each include a pair of hinged folding panels. The bottom of the base plate is equipped with several casters. The front and rear side plates are equipped with asymmetrical pull rod systems.

[0008] The U-shaped tie rod is installed on the rear side plate and includes two parallel sliding rods perpendicular to the bottom plate and a horizontal handle connecting the top of the two parallel sliding rods. The parallel sliding rods extend and retract through the vertical sliding groove on the rear side plate.

[0009] The T-shaped push rod, installed on the front side plate, includes a central slide rod perpendicular to the base plate and a horizontal pusher connected to the top of the central slide rod. The central slide rod extends and retracts through a vertical groove on the front side plate.

[0010] In the aforementioned folding shopping cart, the T-shaped push rod has three extension modes depending on the extension distance:

[0011] First extension mode: The bottom of the lateral pusher is flush with the top of the cover plate, and the lateral pusher forms a front baffle;

[0012] Second extension mode: The central slide bar is not fully extended, and the T-shaped push rod forms a child sitting posture assistive structure;

[0013] Third extension mode: The central slide bar is fully extended, and the T-shaped push rod forms a pushing structure for the shopping cart.

[0014] In the aforementioned folding shopping cart, when the T-shaped push rod corresponds to three extension modes, the T-shaped push rod and the vertical slide groove each have a positioning locking structure; the positioning locking structure adopts a conventional structure in the art, for example, using a combination of a spring plunger, a positioning bead, and a groove.

[0015] In the aforementioned folding shopping cart, preferably, the U-shaped pull rod is centrally located on the rear side panel, the T-shaped push rod is centrally located on the front side panel, and the central slide bar is centrally connected to the horizontal push handle; preferably, the horizontal pull handle and the horizontal push handle have the same width, i.e., the horizontal dimension.

[0016] In the aforementioned folding shopping cart, the front side of the cover plate is hinged to the front side plate and the rear side is snapped into the rear side plate; the front and rear sides of the bottom plate are in contact with the limiting plates at the bottom of the front and rear side plates and are snapped into the bottom of the left and right side plates; the front and rear sides of the left and right side plates are hinged to the front and rear side plates respectively; other known folding shopping cart structures can also be used in this utility model.

[0017] In the aforementioned folding shopping cart, an integral receiving groove is provided on the top front side of the front panel and the cover plate. When the T-shaped push rod is in the retracted state, the horizontal pusher is retracted into the receiving groove to avoid the upward stroke of the cover plate.

[0018] In one of the aforementioned folding shopping carts, a groove is provided at the corresponding position of the cover plate and the U-shaped pull rod to facilitate opening the cover plate, and the top of the groove extends forward to form a protruding convex plate.

[0019] In the aforementioned folding shopping cart, a first locking structure is provided between the two folding panels of the left and right sides. The first locking structure includes a locking groove provided on the top of the two folding panels and a locking slide piece sliding in the locking groove. A second locking structure is provided between the front and rear panels and the left and right sides. The second locking structure includes a flip-top buckle hinged to the corner of the front and rear panels and engaged with the left and right sides for locking.

[0020] Compared with the prior art, this utility model has the following advantages:

[0021] 1. This utility model provides a foldable shopping cart, employing an asymmetrical double-pull-rod system. The U-shaped pull rod is specifically designed for pulling: the double-rod structure offers strong torsional resistance, ensuring stable and effortless dragging over long distances; the T-shaped push rod is optimized for pushing: the dual grip points form a pushing triangle, improving maneuverability in narrow spaces and climbing efficiency, while centrally transmitting force to avoid uneven load friction. This utility model, while ensuring foldability, completely solves the shortcomings of a single pull rod in handling both pushing and pulling.

[0022] 2. This utility model achieves multi-functional scene expansion through three telescopic modes of the T-shaped push rod: a baffle mode to prevent goods from falling, an auxiliary handrail mode for children to sit on, and a full-height push rod mode. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention (in unfolded state);

[0024] Figure 2 This is a perspective view of the present invention (first working state);

[0025] Figure 3 This is a perspective view of the present invention (second working state);

[0026] Figure 4 This is a perspective view of the present invention (third working state);

[0027] Figure 5 This is a perspective view of the present invention (fourth working state);

[0028] Figure 6 yes Figure 1 Exploded view;

[0029] Reference numerals: 1. Base plate; 2. Cover plate; 3. Front side plate; 4. Rear side plate; 5. Left side plate; 6. Right side plate; 7. Caster wheel; 8. Parallel slide bar; 9. Lateral handle; 10. Center slide bar; 11. Lateral push handle; 12. Receiving groove; 13. First locking structure; 14. Second locking structure. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-6 :

[0031] A folding shopping cart includes a base plate 1, a cover plate 2, a front side plate 3, a rear side plate 4, a left side plate 5, and a right side plate 6. The left side plate 5 and the right side plate 6 each include a pair of hinged folding plates. The bottom of the base plate 1 is provided with several casters 7. The front side plate 3 and the rear side plate 4 are equipped with asymmetrical front and rear pull rod systems.

[0032] The U-shaped tie rod is installed on the rear side plate 4 and includes two parallel sliding rods 8 perpendicular to the bottom plate 1 and a horizontal handle 9 connecting the top of the two parallel sliding rods 8. The parallel sliding rods 8 are extended and retracted through the vertical sliding groove on the rear side plate 4.

[0033] The T-shaped push rod is installed on the front side plate 3 and includes a central slide rod 10 perpendicular to the bottom plate 1 and a horizontal pusher 11 connected to the top of the central slide rod 10. The central slide rod 10 is extended and retracted through a vertical slide groove on the front side plate 3.

[0034] The usage method of this embodiment is as follows:

[0035] Pull mode: Refer to the attached document Figure 2 Pull up the U-shaped lever on the rear side panel 4 to extend the parallel slide bar 8 along the vertical groove to a suitable height (adjustable according to the user's height), and lock it in place through the built-in positioning structure. Hold the horizontal handle 9 with both hands and use the casters 7 at the bottom of the base plate 1 to achieve long-distance straight dragging. The double-bar structure can distribute the pulling force and avoid the shopping cart tilting due to force on one side.

[0036] Promotion Model: See Appendix Figure 3 Extend the center slide bar 10 fully, hold both ends of the horizontal push handle 11 with both hands, and use the triangular force application area to achieve precise control (such as turning between narrow shelves, pushing on uphill and downhill sections, and fine-tuning the direction in elevators). The center force transmission design can also reduce the wear of the omnidirectional wheels 7 under off-center load.

[0037] To expand the application scenarios of folding shopping carts, the T-shaped push rod in this embodiment has three extension modes depending on the extension distance:

[0038] First extension pattern: See attached diagram Figure 4 The bottom of the horizontal pusher 11 is flush with the top of the cover plate 2, and the horizontal pusher 11 forms a front baffle. When the cover plate 2 is used to carry objects, the T-shaped push rod is retracted until the bottom of the horizontal pusher 11 is flush with the cover plate 2. After locking, it forms a front baffle to prevent the objects from sliding off the front side during the carrying process. This extension mode is mainly used in conjunction with the pull mode.

[0039] Second extension mode: See attached diagram Figure 5The central slide bar 10 is not fully extended, and the T-shaped push bar forms a child sitting posture assist structure; when the central slide bar 10 is extended to half its length, the height of the lateral push handle 11 is adapted to the child's sitting posture. At this time, the shopping cart can be used as a simple children's stroller, and the cover plate 2 can be used as a seat. The child's legs extend from both sides of the central slide bar 10, and the lateral push handle 11 is provided for the child to grasp and maintain balance; this extension mode is mainly used in conjunction with the pull mode.

[0040] Third extension mode: See attached diagram Figure 3 The central slide bar 10 is fully extended, and the T-shaped push rod forms the pushing structure of the shopping cart.

[0041] Furthermore, to ensure the stability of the three extension modes, the T-shaped push rod has a positioning and locking structure between the T-shaped push rod and the vertical slide groove when corresponding to the three extension modes; the positioning and locking structure adopts a conventional structure in the art, for example, the cooperation of a spring plunger, a positioning bead and a groove.

[0042] Preferably, the U-shaped pull rod is centrally located on the rear side plate 4, the T-shaped push rod is centrally located on the front side plate 3, and the central slide rod 10 is centrally connected to the transverse push handle 11; preferably, the transverse pull handle 9 and the transverse push handle 11 have the same width, i.e., the transverse dimension.

[0043] The folding structure of this embodiment is as follows: the front side of the cover plate 2 is hinged to the front side plate 3, and the rear side is snapped and fixed to the rear side plate 4; the front and rear sides of the bottom plate 1 are in contact with the limiting plates at the bottom of the front side plate 3 and the rear side plate 4, and are snapped and fixed to the bottom of the left side plate 5 and the right side plate 6; the front and rear sides of the left side plate 5 and the right side plate 6 are respectively hinged to the front side plate 3 and the rear side plate 4; other known folding shopping cart structures can also be used in this utility model.

[0044] Furthermore, an integral receiving groove 12 is provided on the top front side of the front side plate 3 and the cover plate 2. When the T-shaped push rod is in the retracted state, the horizontal pusher 11 is retracted into the receiving groove 12 to avoid the upward stroke of the cover plate 2.

[0045] The cover plate 2 and the corresponding position of the U-shaped pull rod are provided with a groove to facilitate opening the cover plate 2. The top of the groove extends forward to form a protruding convex plate. When in use, insert your finger into the groove and pry the convex plate upward to easily open the cover plate 2.

[0046] The locking structure of this embodiment is as follows: a first locking structure 13 is provided between the two folded plates of the left side plate 5 and the right side plate 6. The first locking structure 13 includes a locking groove provided on the top of the two folded plates and a locking slide piece sliding in the locking groove; a second locking structure 14 is provided between the front side plate 3, the rear side plate 4 and the left side plate 5 and the right side plate 6. The second locking structure 14 includes a flip-top buckle that is hinged to the corner of the front side plate 3 and the rear side plate 4 and engages with the left side plate 5 and the right side plate 6 for locking.

[0047] The unfolding method of this embodiment is as follows: In the folded state, first unfold the two folding panels outward to the same plane, then slide the locking slider to the locking position (the locking slider is simultaneously connected to both folding panels) to complete the fixation. Place the bottom plate 1, making it perpendicular to the front side plate 3 and the rear side plate 4, and move it downward. When it moves down to the position of the limiting plate, the bottom snap-fit ​​structure automatically snaps in place; the flip-top buckles at the corners of the front side plate 3, the rear side plate 4, the left side plate 5, and the right side plate 6 snap into place, engaging with the corresponding lock holes to complete the second locking. Hinge the cover plate 2 onto the front side plate 3, and flip the cover plate 2 so that it snaps into the rear side plate 4, and fix it through the snap-fit ​​structure to form a closed carrying space; the cover plate 2 can also be opened at any time when placing items, and the cover plate 2 can also form a platform for placing large items after it is snapped in place.

[0048] The folding and storage method in this embodiment is as follows: Open the cover plate 2, press the bottom plate 1 upwards to detach it from the bottom of the left side plate 5 and the right side plate 6, and store the bottom plate 1 by disassembling or flipping it over. Reverse the operation to unlock the flip cover buckle, slide the locking anti-slip piece to unlock the left side plate 5 and the right side plate 6, and fold the two folding plates inwards to fit together. Release the latch between the cover plate 2 and the rear side plate 4, and store the cover plate 2 by disassembling or flipping it over. Fully retract the U-shaped pull rod and the T-shaped push rod into the slide groove, and store the lateral push handle 11 of the T-shaped push rod in the receiving groove 12 of the front side plate 3 and the cover plate 2, folding the whole into a flat shape to reduce storage space.

[0049] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A folding shopping cart, comprising a base plate (1), a cover plate (2), a front side plate (3), a rear side plate (4), a left side plate (5), and a right side plate (6), wherein the left side plate (5) and the right side plate (6) each include a pair of hinged folding plates, and the bottom of the base plate (1) is provided with a plurality of casters (7), characterized in that, The front side plate (3) and the rear side plate (4) are equipped with a front-to-rear asymmetrical tie rod system: The U-shaped pull rod is installed on the rear side plate (4) and includes two parallel slide rods (8) perpendicular to the bottom plate (1) and a horizontal handle (9) connecting the top of the two parallel slide rods (8). The parallel slide rods (8) are extended and retracted through the vertical slide groove on the rear side plate (4). The T-shaped push rod is installed on the front side plate (3) and includes a central slide rod (10) perpendicular to the bottom plate (1) and a horizontal pusher (11) connected to the top of the central slide rod (10). The central slide rod (10) is extended and retracted through the vertical slide groove on the front side plate (3).

2. A folding shopping cart according to claim 1, characterized in that, The T-shaped push rod has three extension modes depending on the telescopic distance: First extension mode: The bottom of the lateral pusher (11) is flush with the top of the cover plate (2), and the lateral pusher (11) forms a front baffle; Second mode: The central slide bar (10) is not fully extended, and the T-shaped push bar forms a child sitting posture assistive structure; Third mode: The central slide bar (10) is fully extended, and the T-shaped push bar forms the pushing structure of the shopping cart.

3. A folding shopping cart according to claim 2, characterized in that, When the T-shaped push rod corresponds to the three extension modes, the T-shaped push rod and the vertical slide groove have positioning and locking structures respectively.

4. A folding shopping cart according to claim 1, characterized in that, The front side of the cover plate (2) is hinged to the front side plate (3), and the rear side is snapped to the rear side plate (4); the front and rear sides of the bottom plate (1) are in contact with the limiting plates at the bottom of the front side plate (3) and the rear side plate (4), and are snapped to the bottom of the left side plate (5) and the right side plate (6); the front and rear sides of the left side plate (5) and the right side plate (6) are respectively hinged to the front side plate (3) and the rear side plate (4).

5. A folding shopping cart according to claim 4, characterized in that, An integral receiving groove (12) is provided on the top front side of the front side plate (3) and the cover plate (2). When the T-shaped push rod is in the retracted state, the horizontal pusher (11) is retracted into the receiving groove (12) to avoid the upward stroke of the cover plate (2).

6. A folding shopping cart according to claim 4, characterized in that, A first locking structure (13) is provided between the two folded plates of the left side plate (5) and the right side plate (6). The first locking structure (13) includes a locking groove provided on the top of the two folded plates and a locking slide piece sliding in the locking groove. A second locking structure (14) is provided between the front side plate (3), the rear side plate (4) and the left side plate (5) and the right side plate (6). The second locking structure (14) includes a flip-top buckle that is hinged to the corner of the front side plate (3) and the rear side plate (4) and engages with the left side plate (5) and the right side plate (6) for locking.

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