Foldable shopping cart bag

Abstract

The utility model relates to the technical field of foldable shopping carts, in particular to a foldable shopping cart bag which comprises a cart plate, moving wheels arranged at the lower end of the cart plate, a pull rod installed at the front end of the cart plate and a storage bag placed at the upper end of the cart plate. A rotating shaft is arranged on the front side of the trolley plate, a protective sleeve jacking support is rotationally connected to the rotating shaft, the lower end of the pull rod is inserted into the protective sleeve jacking support and fixed, a turning plate is clamped to the side end of the protective sleeve jacking support, two crankshafts are symmetrically arranged at the two ends of the front side of the trolley plate, and the crankshafts penetrate through a fixing plate on the trolley plate and are fixedly connected with the turning plate. The crankshaft is sleeved with a wheel support plate, and the wheel support plate is rotationally connected with the moving wheels. The portable shopping cart solves the problem that an existing shopping cart is inconvenient to carry and store. Meanwhile, when the shopping cart bag is unfolded, operation is easy, and the time of a user is saved.

Description

Technical Field

[0001] This utility model relates to the field of folding shopping cart technology, specifically a foldable shopping cart bag. Background Technology

[0002] With the rapid development of society and economy, people's living standards are improving day by day, and the demand for daily necessities is increasing. Nowadays, most shopping in the market uses various kinds of plastic bags as a means of carrying things. However, plastic bags have disadvantages such as being non-degradable, having limited capacity, and being easily damaged, and have been opposed by people for many years. In addition, carrying a tote bag does not hold much and is bulky, especially for the elderly who find it difficult to carry. On the other hand, carrying a trolley is not convenient to carry, and after use, it is too big to put anywhere. Another Chinese patent of the applicant, 202420991480.1, discloses "A Portable Shopping Cart Bag", authorized publication number CN222005120U. This patent includes a cart board, movable wheels installed on the lower part of the cart board, a tension rod set on the upper part of the cart board, and a storage bag. The movable wheels are installed on the front end of the cart board through a hinge assembly. Two movable wheels are symmetrically arranged. A V-shaped groove is opened in the middle of the cart board along the length direction. The left and right ends of the V-shaped groove are rotatably connected to the support legs through fixed sleeves. A U-shaped groove is connected to the rear end of the V-shaped groove. A protective sleeve top support is inserted into the U-shaped groove. The protective sleeve top support is sleeved on the lower part of the tension rod. A connecting shaft passes through the tension rod, the protective sleeve top support, and the U-shaped groove to fix the tension rod and the protective sleeve top support relatively and rotatably connect them to the U-shaped groove. Several buckles are installed vertically at equal intervals on the back side of the storage bag. The storage bag is tied to the tension rod by the buckles. The aforementioned disclosed technical solution proposes a foldable shopping cart, but the operation of storing and unfolding the shopping cart is relatively cumbersome, especially requiring multiple steps to unfold the shopping cart, which cannot be unfolded and used quickly, wasting a lot of time and being inconvenient to use. Utility Model Content

[0003] The purpose of this invention is to provide a foldable shopping cart bag to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a foldable shopping cart bag, including a cart board, movable wheels disposed at the lower end of the cart board, a pull rod installed at the front end of the cart board, and a storage bag placed at the upper end of the cart board. A slide rail is provided at the lower end of the cart board, a rotating shaft is slidably connected to the slide rail, and a protective sleeve top support is rotatably connected to the rotating shaft. The lower end of the pull rod is inserted into and fixed in the protective sleeve top support. A turning plate is snapped onto the side end of the protective sleeve top support. Two crankshafts are symmetrically arranged at both ends of the front side of the cart board. The crankshafts pass through a fixed plate on the cart board and are fixedly connected to the turning plate. A wheel bracket plate is sleeved on the crankshaft, and the wheel bracket plate is rotatably connected to the movable wheels. A fixed sleeve is provided at the front end of the storage bag, and the fixed sleeve is sleeved on the pull rod. A zipper is installed in the middle of the fixed sleeve. A storage bag is fixedly connected to the rear end of the storage bag.

[0005] Preferably, a first positioning hole is provided on the crankshaft, and a second positioning hole is provided on the wheel bracket plate at the position corresponding to the first positioning hole. A compression spring is placed in the first positioning hole, and a button is engaged in the second positioning hole. A pin is provided between the button and the compression spring.

[0006] With the above design, when the wheel support plate rotates around the crankshaft to a certain angle, the pin pops out, fixing and locking the wheel support plate and the crankshaft.

[0007] Preferably, a positioning magnetic block is provided at the connection between the crankshaft and the wheel support plate, and the positioning magnetic block enables the wheel support plate to rotate to a specific angle on the crankshaft.

[0008] With the above design, when the wheel support plate rotates on the crankshaft, it is affected by the magnetic force of the positioning magnetic block, and the wheel support plate can automatically rotate to a specific angle, which facilitates the alignment of the first positioning hole and the second positioning hole, so that the pin pops out and locks the moving wheel.

[0009] Preferably, two snap buttons are symmetrically arranged on the side end of the sheath top support, and a slot is provided on the turning plate relative to the snap buttons, so that the snap buttons can be snapped into the slot.

[0010] With the above structural design, through the cooperation of the latch and the latch, when the pull rod is pulled out from the bottom of the vehicle panel, the latch on the top support of the protective sleeve can be locked into the latch of the turning plate. At this time, the turning plate can rotate with the top support of the protective sleeve.

[0011] Preferably, the upper end of the turning plate is provided with a locking component to be fixed to the vehicle plate. The locking component includes a pin and a return spring sleeved on the pin. The pin passes through the turning plate and is inserted into the fixing plate.

[0012] With the above structural design, when the pull rod is rotated to be perpendicular to the vehicle board, the pin locks the pull rod to the vehicle board, keeping the pull rod upright and preventing it from automatically retracting after being pulled up and disengaged from the manual control.

[0013] Preferably, a lever is fixedly connected to the side end of the wheel bracket plate, and stops are symmetrically fixedly connected to both sides of the bottom of the vehicle plate.

[0014] With the above structural design, when the crankshaft rotates, the paddle on the wheel support plate collide with the stop block on the cart plate, causing the wheel support plate to rotate automatically around the crankshaft. This eliminates the need to manually rotate the moving wheels to an upright position, simplifying the unfolding steps of the shopping cart and making it easy to operate.

[0015] Preferably, the lower end of the vehicle platform is rotatably connected to a support leg, and the support leg is connected to the lower end of the crankshaft via a connecting rod.

[0016] With the above structural design, during the rotation of the crankshaft, the crankshaft pulls the outriggers out from the bottom of the vehicle body through the connecting rod, thus completing the automatic opening of the outriggers.

[0017] A method of using a foldable shopping cart bag, the method comprising:

[0018] When folding in the unfolded state, unzip the zipper on the fixed sleeve to separate the storage bag from the pull rod. After retracting the pull rod, pull the pin while pressing the pull rod downwards. As the pull rod rotates around the pivot, it drives the protective sleeve top support, the turning plate, and the crankshaft to rotate simultaneously, and also drives the outriggers to fold up under the vehicle platform. Push the pull rod to move the pull rod and the protective sleeve top support along the slide rail to the bottom of the vehicle platform. Press the button on the wheel support plate to push the pin into the first positioning hole. Fold the moving wheel to the bottom of the vehicle platform. Lay the storage bag down on the vehicle platform. Fold the upper part of the storage bag under the vehicle platform. Open the zipper on the storage bag and flip the bag flap from the top of the vehicle platform to the bottom of the vehicle platform to completely cover the storage bag, vehicle platform, pull rod, moving wheel, and outriggers. Zip up the storage bag to form the vehicle bag.

[0019] When unfolding from the folded state, unzip the storage bag and place it on the platform. Pull the lever out from the bottom of the platform, and the latch on the top support of the cover will automatically engage with the slot of the turning plate. Rotate the lever until it is perpendicular to the platform. At this time, the pin will lock the lever to the platform. When the turning plate is rotated by the lever, the crankshaft will rotate at the same time. The paddle on the wheel support plate will collide with the stop block on the platform. The wheel support plate will rotate around the crankshaft, causing the positioning magnet to collide and attract. The pin will pop out, locking the wheel support plate and the crankshaft. At this time, the moving wheel is perpendicular to the platform. Finally, the storage bag is fixed to the lever with the fixing sleeve.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This shopping cart bag is very compact and lightweight when folded. It's easy to use, folding up for convenient carrying or storage, solving the problem of inconvenient carrying and storage of existing shopping carts. Furthermore, it's simple to unfold, allowing for quick deployment when needed, saving users time. Attached Figure Description

[0022] Figure 1 This is a side view of the present invention;

[0023] Figure 2 This is a front view of the present invention;

[0024] Figure 3 This is a rear view of the present invention;

[0025] Figure 4 This is a schematic diagram of the folded state of a portion of the structure of this utility model;

[0026] Figure 5 This is a schematic diagram showing the unfolded state of a portion of the structure of this utility model;

[0027] Figure 6 This is a schematic diagram of the bottom structure of the vehicle body of this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the sheath top support of this utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the turning plate of this utility model;

[0030] Figure 9 This is a schematic diagram of the structure of the wheel support plate frame of this utility model;

[0031] Figure 10 This is a schematic diagram of the crankshaft structure of this utility model;

[0032] Figure 11 This utility model Figure 2 A partial sectional view at point A in the middle;

[0033] Figure 12 This utility model Figure 2 Enlarged structural diagram at point B;

[0034] Figure 13 This utility model Figure 2 Sectional view at point C;

[0035] Figure 14 This is a schematic diagram of the structure of this utility model after folding and storing. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Please see Figures 1 to 14 This utility model provides a technical solution: a foldable shopping cart bag, including a cart board 3, movable wheels 5 disposed at the lower end of the cart board 3, a pull rod 4 installed at the front end of the cart board 3, and a storage bag 1 placed at the upper end of the cart board 3. The cart board 3 is made of aluminum alloy and has a hollow design to reduce the weight of the shopping cart and make it easy to carry. A slide rail 301 is provided at the lower end of the cart board 3. Two slide rails 301 are symmetrically arranged along the central axis of the cart board 3. A rotating shaft is slidably connected to the slide rail 301. The two ends of the rotating shaft extend into the two slide rails 301 respectively. A protective top support 7 is rotatably connected to the rotating shaft. The protective top support 7 is a sealed, interconnected cylindrical structure. The lower end of the pull rod 4 is inserted into the protective top support 7 and fixed to it via a pivot. The pull rod 4 has a telescopic function. A turning plate 9 is snapped onto the side end of the protective top support 7. Two crankshafts 11 are symmetrically arranged at both ends of the front side of the vehicle platform 3. The crankshafts 11 pass through the fixing plate 302 on the vehicle platform 3 and are fixedly connected to the turning plate 9. The two end plates of the turning plate 9 are fixed to the crankshafts 11 with screws. A wheel bracket plate 10 is sleeved on the crankshaft 11, and the wheel bracket plate 10 is rotatably connected to the moving wheel 5. Velcro is installed at the position where the vehicle platform 3 contacts the storage bag 1 to ensure that the storage bag 1 can be stably placed on the vehicle platform 3.

[0038] Two discs are fixedly connected to the crankshaft 11. The discs are located at the upper and lower ends of the wheel bracket plate 10 and are fixed to the crankshaft 11 by screws. The two discs prevent the wheel bracket plate 10 from moving along the length of the crankshaft 11, thus serving as a limiting device. A first positioning hole 1101 is provided on the crankshaft 11, and a second positioning hole 1002 is provided on the wheel bracket plate 10 at the position corresponding to the first positioning hole 1101. A compression spring 15 is placed in the first positioning hole 1101, and a button cover is threadedly connected to the opening of the second positioning hole 1002. A button 17 is placed in the second positioning hole 1002, and the upper end of the button 17 extends from the button cover. A pin 16 is provided between the button 17 and the compression spring 15, and the pin 16 can be completely pushed into the first positioning hole 1101 by the button 17.

[0039] A positioning magnetic block 14 is provided at the connection between the crankshaft 11 and the wheel bracket plate 10. Two attractive positioning magnetic blocks 14 are fixed on the crankshaft 11 and the wheel bracket plate 10 respectively. The positioning magnetic block 14 can make the wheel bracket plate 10 rotate on the crankshaft 11 to a specific angle, so that the moving wheel 5 is perpendicular to the vehicle plate 3.

[0040] The storage bag 1 has a fixing sleeve 8 at its front end, which is fitted onto the pull rod 4. A zipper is installed in the middle of the fixing sleeve 8. Unzipping the zipper allows the storage bag 1 to be separated from the pull rod 4. A storage bag 2 is installed at the rear end of the storage bag 1. The storage bag 2 is larger than the vehicle board 3. Zippers are installed on the top, left, and right sides of the storage bag 2, making it easy to fold the storage bag 2 from the inside out to completely cover the entire vehicle board 3. A handle is installed on the upper inner side of the storage bag 2, making it easy for users to carry after folding and storing it as a vehicle bag.

[0041] Two latches 701 are symmetrically arranged on the side end of the sheath top support 7. A slot 901 is provided on the turning plate 9 at the position relative to the latches 701, and the latches 701 can be locked into the slot 901.

[0042] The upper end of the turning plate 9 is provided with a locking assembly to fix it to the cart panel 3. The locking assembly includes a pin 12 and a return spring 13 sleeved on the pin 12. A limit plate is fixedly connected to the pin 12. The return spring 13 is located between the limit plate and the connecting block 902. The pin 12 passes through the connecting block 902 on the turning plate 9 and is inserted into the fixing plate 302. One end of the pin 12 inserted into the fixing plate 302 is cut to have a bevel. When the pull rod 4 is rotated to be perpendicular to the cart panel 3, the beveled pin 12 can automatically extend into the fixing plate 302, fixing the turning plate 9 and the cart panel 3 relative to each other, so that the pull rod 4 remains upright when the shopping cart is fully unfolded.

[0043] A lever 1001 is fixedly connected to the side end of the wheel support plate 10, and stops 303 are symmetrically fixedly connected to both sides of the bottom of the cart 3. When the crankshaft 11 rotates, the lever 1001 on the wheel support plate 10 collides with the stops 303 on the cart 3, causing the wheel support plate 10 to automatically rotate around the crankshaft 11. This eliminates the need to manually rotate the moving wheels 5 to an upright position, simplifying the unfolding steps of the shopping cart and making operation convenient.

[0044] A support leg 6 is rotatably connected to the lower end of the vehicle platform 3. The support leg 6 is U-shaped, and the ends of its two side arms are rotatably connected to the side wall of the vehicle platform 3. A connecting rod 601 is rotatably connected to the two side arms of the support leg 6, and the other end of the connecting rod 601 is rotatably connected to the lower end of the crankshaft 11. During the rotation of the crankshaft 11, the crankshaft 11 pulls the support leg 6 out from the lower end of the vehicle platform 3 through the connecting rod 601, thus automatically opening the support leg 6.

[0045] A method of using a foldable shopping cart bag, the method comprising:

[0046] When folding in the unfolded state, unzip the zipper on the fixing sleeve 8 to disengage the storage bag 1 from the pull rod 4. After retracting the pull rod 4, pull the pin 12 while pressing the pull rod 4 downwards. As the pull rod 4 rotates around the pivot, it drives the protective sleeve top support 7, the turning plate 9, and the crankshaft 11 to rotate simultaneously, also causing the support leg 6 to retract under the vehicle platform 3. Push the pull rod 4 to move the pull rod 4 and the protective sleeve top support 7 along the slide rail 301 to the underside of the vehicle platform 3, and press the wheel support plate 1. Button 17 on 0 pushes pin 16 into first positioning hole 1101, folds the moving wheel 5 to the lower end of the platform 3, lays the storage bag 1 on the platform 3, folds the upper part of the storage bag 1 under the platform 3, opens the zipper on the storage bag 2, flips the cover of the storage bag 2 from above the platform 3 to below the platform 3, and covers the storage bag 1, platform 3, pull rod 4, moving wheel 5 and support leg 6. Zip up the storage bag 2 to form the vehicle bag.

[0047] When unfolding from the folded state, unzip the storage bag 2 and unfold the storage bag 1 and place it on the platform 3. Pull the pull rod 4 out from the bottom of the platform 3. The latch 701 on the top support 7 of the protective cover automatically engages with the slot 901 of the turning plate 9. Rotate the pull rod 4 to be perpendicular to the platform 3. At this time, the pin 12 fixes the pull rod 4 to the platform 3. When the turning plate 9 is rotated by the pull rod 4, the crankshaft 11 rotates at the same time. The paddle 1001 on the wheel support plate 10 collides with the stop block 303 of the platform 3. The wheel support plate 10 rotates around the crankshaft 11, causing the positioning magnet 14 to collide and attract. The pin 16 pops out, fixing the wheel support plate 10 and the crankshaft 11. At this time, the moving wheel 5 is perpendicular to the platform 3. Then, the storage bag 1 is fixed to the pull rod 4 by the fixing sleeve 8.

[0048] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A foldable shopping cart bag, comprising a cart platform (3), movable wheels (5) disposed at the lower end of the cart platform (3), a pull rod (4) mounted at the front end of the cart platform (3), and a storage bag (1) placed at the upper end of the cart platform (3), characterized in that: The lower end of the vehicle board (3) is provided with a slide rail (301), a rotating shaft is slidably connected to the slide rail (301), a protective top support (7) is rotatably connected to the rotating shaft, the lower end of the pull rod (4) is inserted into the protective top support (7) and fixed, a turning plate (9) is snapped onto the side end of the protective top support (7), two crankshafts (11) are symmetrically arranged at the front ends of the vehicle board (3), the crankshafts (11) pass through the fixing plate (302) on the vehicle board (3) and are fixedly connected to the turning plate (9), a wheel bracket plate (10) is sleeved on the crankshaft (11), the wheel bracket plate (10) is rotatably connected to the moving wheel (5), a fixing sleeve (8) is provided at the front end of the storage bag (1), the fixing sleeve (8) is sleeved on the pull rod (4), a zipper is installed in the middle position of the fixing sleeve (8), and a storage bag (2) is fixedly connected to the rear end of the storage bag (1).

2. The foldable shopping cart bag according to claim 1, characterized in that: The crankshaft (11) has a first positioning hole (1101), and the wheel bracket plate (10) has a second positioning hole (1002) corresponding to the first positioning hole (1101). A compression spring (15) is placed in the first positioning hole (1101), and a button (17) is engaged in the second positioning hole (1002). A pin (16) is provided between the button (17) and the compression spring (15).

3. A foldable shopping cart bag according to claim 1 or 2, characterized in that: A positioning magnet (14) is provided at the connection between the crankshaft (11) and the wheel support plate (10), and the positioning magnet (14) enables the wheel support plate (10) to rotate to a specific angle on the crankshaft (11).

4. The foldable shopping cart bag according to claim 1, characterized in that: The sheath top support (7) has two symmetrically arranged buttons (701) on its side end. The turning plate (9) has a slot (901) at the position relative to the button (701), and the button (701) can be locked into the slot (901).

5. A foldable shopping cart bag according to claim 1, characterized in that: The upper end of the turning plate (9) is provided with a locking component to be fixed to the vehicle plate (3). The locking component includes a pin (12) and a return spring (13) sleeved on the pin (12). The pin (12) passes through the turning plate (9) and is inserted into the fixing plate (302).

6. The foldable shopping cart bag according to claim 1, characterized in that: A lever (1001) is fixedly connected to the side end of the wheel bracket plate (10), and a stop block (303) is symmetrically fixedly connected to both sides of the bottom of the vehicle plate (3).

7. A foldable shopping cart bag according to claim 1, characterized in that: The lower end of the vehicle platform (3) is rotatably connected to a support leg (6), and the support leg (6) is connected to the lower end of the crankshaft (11) via a connecting rod (601).

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