Folding shopping cart capable of climbing stairs

Abstract

The utility model relates to the field of shopping carts, and discloses a folding shopping cart capable of climbing stairs, which comprises a front plate, two clamping grooves II are formed in the front plate, two bumps I are fixedly connected to the top of the front plate, two grooves I are formed in the bottom of the front plate, and side plates I are rotatably connected to two sides of the front plate. A second side plate is rotatably connected to one side of the first side plate, two first clamping grooves are formed in the second side plate, a bottom plate is rotatably connected to the bottom of the front plate, a side rear plate is rotatably connected to one side of the second side plate, a clamping block is rotatably connected to the interior of the side rear plate, and two second protruding blocks are fixedly connected to the top of the rear plate. Two second grooves are formed in the bottom of the rear plate, and a stair climbing assembly is arranged in the rear plate. According to the foldable shopping cart, the bottom plate, the front plate, the side plates, the rotary clamping blocks, the rear plate and other structures are matched with one another, so that the shopping cart is convenient to fold and store, space is effectively saved through simple operation steps, and carrying and storage are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of shopping carts, in particular to a foldable shopping cart capable of climbing stairs. Background Art

[0002] Shopping carts, as a convenient shopping tool, are widely used in supermarkets, shopping malls, convenience stores and other retail places. It consists of a frame and multiple wheels, and is usually equipped with a retractable basket or bag on the top to store the goods selected by customers. Modern shopping carts are designed with ergonomics in mind and are made of lightweight materials such as plastic, metal or composite materials to ensure comfort and stability for users when pushing and pulling for a long time.

[0003] Many shopping cart designs in the prior art, while performing well in meeting basic transportation needs, have significant limitations in terms of flexibility, adaptability, and environmental friendliness. Such shopping carts are usually designed as fixed structures, lack folding functions, and cannot achieve effective use of space; they cannot climb stairs, which limits their application in multi-story buildings and increases the burden of customers' transportation; and they do not support expansion and cannot be adjusted in size according to actual needs, which limits the possibility of purchasing a large number of goods at one time, and also increases the number of times customers frequently travel between different shopping areas, reducing shopping efficiency.

[0004] In view of the above problems, a stair-climbing foldable shopping cart is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a foldable shopping cart that can climb stairs, aiming to improve the shopping carts of this type in the prior art. Although they perform well in meeting basic transportation needs, they have significant limitations in flexibility, adaptability and environmental protection. Such shopping carts are usually designed as fixed structures, lack folding functions, and cannot achieve effective use of space; they cannot climb stairs, which limits their application in multi-story buildings and increases the burden of customers' transportation; and they do not support capacity expansion and cannot adjust the size according to actual needs, which limits the possibility of purchasing a large number of goods at one time, and also increases the number of customers' frequent trips between different shopping areas, reducing shopping efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a foldable shopping cart that can climb stairs, comprising a front plate, two card slots 2 are provided inside the front plate, two protrusions 1 are fixedly connected to the top of the front plate, and two grooves 1 are provided at the bottom of the front plate, both sides of the front plate are rotatably connected with side plates 1, one side of the side plate is rotatably connected with side plates 2, two card slots 1 are provided inside the side plates 2, the bottom of the front plate is rotatably connected with the bottom plate, one side of the side plate 2 is rotatably connected with the side rear plate, and the side rear plate is rotatably connected with a card block, the top of the rear plate is fixedly connected with two protrusions 2, and the bottom of the rear plate is provided with two grooves 2, a climbing component is arranged inside the rear plate, and the climbing component is used for the shopping cart to go up and down stairs easily, and an adjustment component is arranged inside the rear plate, and the adjustment component is used to adjust the angle of the pull rod.

[0007] As a further description of the above technical solution:

[0008] The adjustment assembly includes a limit slot and two pull rods, the limit slot is opened on the middle side of the rear plate, the pull rod is rotatably connected to the inner wall of the rear plate, a telescopic rod is arranged inside the pull rod, and a T-block is slidably connected to the outside of the pull rod.

[0009] As a further description of the above technical solution:

[0010] The stair climbing assembly includes a connecting rod, one end of which is rotatably connected to the inside of the rear plate, two irregular plates are fixedly connected to the outside of the connecting rod, a plurality of fixing rods are fixedly connected between the two irregular plates, and a climbing wheel is rotatably connected to the outside of the fixing rod.

[0011] As a further description of the above technical solution:

[0012] The bottom of the front plate is rotatably connected to two universal wheels.

[0013] As a further description of the above technical solution:

[0014] One end of the telescopic rod is fixedly connected with a handle, and the T-shaped block is slidably connected to the inside of the rear plate.

[0015] As a further description of the above technical solution:

[0016] The T-block is inserted into the limiting groove, and the T-block and the limiting groove are interference fit.

[0017] As a further description of the above technical solution:

[0018] The card block is inserted into the first card slot.

[0019] As a further description of the above technical solution:

[0020] The first protrusion is clamped with the first groove, and the second protrusion is clamped with the second groove.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the front plate and the bottom plate are fitted together by pulling the bottom plate, and then the card block is rotated to be separated from the inside of the card slot 1, and then the front plate and the back plate are pushed inward to cause the side plate 1 and the side plate 2 to fold inward. The side plate 1 should fit with the bottom plate, and the side plate 2 should fit with the inner wall of the back plate. Finally, the card block is connected to the inside of the card slot 2 opened in the front plate for fixing, so as to realize the convenient folding and storage of the shopping cart. Through simple operation steps, it effectively saves space and is easy to carry and store.

[0023] 2. In the utility model, by rotating the card block to engage in the first card slot and rotating the card block to engage in the second card slot, the shopping cart can be stably fixed in the unfolded and folded states, effectively avoiding shaking during unfolding and folding, and ensuring safety and stability during use.

[0024] 3. In the utility model, the irregular plate, the fixed rod and the ladder wheels are driven to rotate synchronously by rotating the connecting rod, thereby achieving smooth movement on the stairs and improving the convenience of use. It is especially suitable for carrying a large number of items or moving in a narrow space.

[0025] 4. In the present invention, the T-block is pulled upward to be disengaged from the limiting groove. Then, the handle is pulled to drive the pull rod and the telescopic rod to rotate, and the telescopic rod is rotated inside the rear plate to achieve the desired angle adjustment, thereby meeting different usage requirements, such as lifting, tilting or adjusting to an angle suitable for the user's body posture, thereby improving the convenience and comfort of use;

[0026] 5. In the utility model, by aligning the groove 1 and the groove 2 of the other shopping cart with the protrusion 1 and the protrusion 2 of the bottom shopping cart, the two carts are quickly connected, which significantly increases the overall cargo space. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of a stair-climbing foldable shopping cart proposed by the utility model;

[0028] Figure 2 This is a structural schematic diagram of a groove 1 of a stair-climbing foldable shopping cart proposed by the utility model;

[0029] Figure 3 This is a structural schematic diagram of a bottom plate of a stair-climbing foldable shopping cart proposed by the utility model;

[0030] Figure 4 for Figure 3The enlarged view of point A in the middle;

[0031] Figure 5 This is a structural schematic diagram of a card slot of a stair-climbing foldable shopping cart proposed by the utility model;

[0032] Figure 6 This is a schematic diagram of the structure of a stair climbing wheel of a foldable shopping cart that can climb stairs proposed by the utility model;

[0033] Figure 7 The utility model is a schematic diagram of the structure of a pull rod of a stair-climbing foldable shopping cart.

[0034] Legend:

[0035] 1. Front plate; 2. Universal wheel; 3. Bump 1; 4. Side plate 1; 5. Side plate 2; 6. Clamp block; 7. Rear plate; 8. Bottom plate; 9. Bump 2; 10. Groove 1; 11. Groove 2; 12. Connecting rod; 13. Irregular plate; 14. Fixed rod; 15. Ladder wheel; 16. Pull rod; 17. Telescopic rod; 18. Handle; 19. T-block; 20. Limiting groove; 21. Clamp slot 1; 22. Clamp slot 2. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] Reference Figure 1 - Figure 7 The utility model provides an embodiment: a foldable shopping cart that can climb stairs, including a front plate 1, two card slots 22 are provided inside the front plate 1, two protrusions 3 are fixedly connected to the top of the front plate 1, and two grooves 10 are provided at the bottom of the front plate 1, both sides of the front plate 1 are rotatably connected to side plates 4, one side of the side plate 4 is rotatably connected to the side plate 2 5, and two card slots 21 are provided inside the side plate 2 5, the bottom of the front plate 1 is rotatably connected to the bottom plate 8, one side of the side plate 2 5 is rotatably connected to the side rear plate 7, and the side rear plate 7 is rotatably connected to the card block 6, the top of the rear plate 7 is fixedly connected to two protrusions 29, and the bottom of the rear plate 7 is provided with two grooves 21, and a climbing component is provided inside the rear plate 7, which is used for the shopping cart to go up and down stairs, and an adjustment component is provided inside the rear plate 7, and the adjustment component is used to adjust the angle of the pull rod 16.

[0038] Specifically, when using this foldable shopping cart that can climb stairs, there are specific operating steps to adapt to different usage requirements. When you want to increase the capacity of the shopping cart, you can do so by connecting another shopping cart. The specific operation is: align the groove 10 of another shopping cart and cling to the protrusion 13 of the current shopping cart, and align the groove 2 11 of the shopping cart and cling to the protrusion 2 9 of the current shopping cart. In this way, through the precise docking of the groove and the protrusion, the two shopping carts can form a whole, significantly increasing the available space and providing more carrying capacity. When preparing to store or carry the shopping cart, first perform the following steps: pull the bottom plate 8 to ensure that the front plate 1 fits tightly with the bottom plate 8. Then, rotate the card block 6 to disengage it from the internal position of the card slot 1 21. Then, apply force inward to push the front plate 1 and the rear plate 7, so that the side plate 1 4 and the side plate 2 5 are folded inward along the folding axis. Ensure that the side plate 1 4 fits completely with the bottom plate 8, and at the same time, the side plate 2 5 needs to fit tightly with the inner wall of the rear plate 7. After the folding action is completed, the card block 6 is correctly snapped into the pre-set card slot 22 on the inner side of the front plate 1 to achieve stable fixation. At this point, the shopping cart has been folded, which is convenient for storage and transportation.

[0039] Reference Figure 7 The adjustment assembly includes a limit groove 20 and two pull rods 16. The limit groove 20 is opened on the middle side of the rear plate 7. The pull rod 16 is rotatably connected to the inner wall of the rear plate 7. A telescopic rod 17 is arranged inside the pull rod 16. A T-block 19 is slidably connected to the outer side of the pull rod 16.

[0040] Specifically, the T-block 19 is pulled upwards to disengage it from the limiting groove 20. This step allows the pull rod 16 and the telescopic rod 17 connected thereto to rotate freely inside the rear plate 7. Next, the handle 18 is held and pulled outwards with force. This action drives the pull rod 16 and the telescopic rod 17 to rotate together, thereby causing the telescopic rod 17 to rotate accordingly inside the rear plate 7. Through the above operation, the angle of the pull rod 16 can be flexibly adjusted to meet different usage requirements, such as lifting, tilting or adjusting to an angle suitable for the user's body posture, thereby improving the convenience and comfort of use.

[0041] Reference Figure 1 and Figure 6 The stair climbing assembly includes a connecting rod 12, one end of which is rotatably connected to the inside of the rear plate 7, two irregular plates 13 are fixedly connected to the outside of the connecting rod 12, a plurality of fixed rods 14 are fixedly connected between the two irregular plates 13, and a climbing wheel 15 is rotatably connected to the outside of the fixed rod 14.

[0042] Specifically, when climbing stairs, the operation is as follows: by rotating the connecting rod 12, the irregular plate 13 is driven to rotate, which in turn drives the fixing rod 14, and finally causes the climbing wheel 15 to roll. This series of actions work together to enable the shopping cart to go up and down stairs smoothly, simplifying the carrying process.

[0043] Reference Figure 1 - Figure 7 The bottom of the front plate 1 is rotatably connected to two universal wheels 2, one end of the telescopic rod 17 is fixedly connected to a handle 18, a T-block 19 is slidably connected to the inside of the rear plate 7, the T-block 19 is inserted into the inside of the limiting groove 20, the T-block 19 and the limiting groove 20 are interference fit, the clamping block 6 is inserted into the inside of the clamping groove 1 21, the protrusion 1 3 is clamped with the groove 1 10, and the protrusion 2 9 is clamped with the groove 2 11.

[0044] Specifically, the universal wheel 2 at the bottom of the front plate 1 provides the shopping cart with mobility, making the shopping cart more flexible and convenient when moving smoothly on the ground. The telescopic rod 17 and the handle 18, the telescopic rod 17 can be retracted when not in use, which is convenient for storage. The handle 18 is the key to controlling the telescopic rod 17 to extend and retract, and provides a gripping point for the user when unfolding or retracting the telescopic rod 17. The T-block 19 slides inside the rear plate 7 and is inserted into the limit groove 20 by interference fit, playing the role of locking and unlocking. When the T-block 19 is inserted into the limit groove 20, the position of the pull rod 16 can be fixed, and when it is removed, the pull rod 16 is allowed to rotate freely to adjust the angle. The card block 6 and the card slot 1 21, the card block 6 is on the rear plate 7, and the card slot 1 21 is on the side plate 5. When the card block 6 is inserted into the card slot 1 21, the side plate 2 5 and the rear plate 7 can be locked to prevent loosening during unfolding. The cooperation between the card block 6 and the card slot 2 22 ensures that it is fixed after folding. This design ensures the safety and stability of the folding and unfolding process. The structures of the protrusion 1 3 and the groove 1 10, and the protrusion 2 9 and the groove 2 11 are designed to realize the connection between two shopping carts. Through the clamping of the protrusion and the groove, the two shopping carts can be quickly and firmly combined together to increase the overall cargo space.

[0045] Working principle: When the shopping cart needs to increase its carrying space, the groove 10 and groove 2 11 of another shopping cart are aligned with the convex block 1 3 and convex block 2 9 of the bottom shopping cart to connect the two shopping carts, thereby increasing the overall volume and meeting the loading needs of more items.

[0046] When the shopping cart needs to be stored or transported, first pull the bottom plate 8 to fit the front plate 1 and the bottom plate 8 together, then rotate the clamping block 6 to disengage it from the inside of the clamping slot 1 21, and then push the front plate 1 and the back plate 7 inward to cause the side plate 1 4 and the side plate 2 5 to fold inward. The side plate 1 4 should fit the bottom plate 8, the side plate 2 5 should fit the inner wall of the back plate 7, and the clamping block 6 should be clamped in the inside of the clamping slot 22 opened in the front plate 1 to fix it. At this time, the folding is completed, which is convenient for storage and transportation;

[0047] When facing stairs, by rotating the connecting rod 12, the irregular plate 13, the fixing rod 14 and the climbing wheel 15 are driven to rotate synchronously, so that the shopping cart can move smoothly on the stairs, simplifying the carrying process of going up and down the stairs;

[0048] In order to adjust the angle of the pull rod 16 to adapt to different usage scenarios, first pull the T-block 19 upward to disengage it from the limiting groove 20. Then, pull the handle 18 to drive the pull rod 16 and the telescopic rod 17 to rotate, and then the telescopic rod 17 rotates inside the rear plate 7 to achieve the desired angle adjustment, thereby improving the convenience and comfort of use.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A foldable shopping cart capable of climbing stairs, comprising a front panel (1), characterized in that: The front plate (1) has two card slots (22) formed inside, the top of the front plate (1) is fixedly connected with two protrusions (3), the bottom of the front plate (1) is provided with two grooves (10), both sides of the front plate (1) are rotatably connected with side plates (4), one side of the side plate (4) is rotatably connected with side plates (5), two card slots (21) are formed inside the side plates (5), the bottom of the front plate (1) is rotatably connected with a bottom plate (8), one side of the side plate (5) is rotatably connected with a side rear plate (7), a card block (6) is rotatably connected inside the side rear plate (7), the top of the rear plate (7) is fixedly connected with two protrusions (9), the bottom of the rear plate (7) is provided with two grooves (11), a stair climbing assembly is provided inside the rear plate (7), the stair climbing assembly is used for a shopping cart to go up and down stairs, an adjustment assembly is provided inside the rear plate (7), the adjustment assembly is used to adjust the angle of the pull rod (16).

2. The foldable shopping cart capable of climbing stairs according to claim 1, characterized in that: The adjustment assembly comprises a limit groove (20) and two pull rods (16), wherein the limit groove (20) is arranged at the middle side of the rear plate (7), the pull rod (16) is rotatably connected to the inner wall of the rear plate (7), a telescopic rod (17) is arranged inside the pull rod (16), and a T-shaped block (19) is slidably connected to the outside of the pull rod (16).

3. The foldable shopping cart capable of climbing stairs according to claim 1, characterized in that: The stair climbing assembly comprises a connecting rod (12), one end of which is rotatably connected to the inside of the rear plate (7), two irregular plates (13) are fixedly connected to the outside of the connecting rod (12), a plurality of fixed rods (14) are fixedly connected between the two irregular plates (13), and a climbing wheel (15) is rotatably connected to the outside of the fixed rod (14).

4. The foldable shopping cart capable of climbing stairs according to claim 1, characterized in that: The bottom of the front plate (1) is rotatably connected to two universal wheels (2).

5. The stair-climbing foldable shopping cart according to claim 2, characterized in that: One end of the telescopic rod (17) is fixedly connected to a handle (18), and the T-shaped block (19) is slidably connected inside the rear plate (7).

6. The stair-climbing foldable shopping cart according to claim 2, characterized in that: The T-shaped block (19) is inserted into the limiting groove (20), and the T-shaped block (19) and the limiting groove (20) are interference fit.

7. The stair-climbing foldable shopping cart according to claim 1, characterized in that: The card block (6) is inserted into the first card slot (21).

8. The stair-climbing foldable shopping cart according to claim 1, characterized in that: The first protrusion (3) is engaged with the first groove (10), and the second protrusion (9) is engaged with the second groove (11).

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