Trolley

Abstract

A basket body of the trolley comprises a basket and a seat back plate, the seat back plate comprises a first plate, a second plate and a seat plate, connecting shaft pipes are arranged at the two ends of the top of the first plate in an outward protruding mode, connecting inner cavities are formed in the connecting shaft pipes, the basket is connected with basket side wings in a buckled mode, and protruding connecting shaft sleeves are arranged on the basket side wings. A first U-shaped connector is arranged on the side, facing the second plate, of the first plate, a connecting leg is downwards arranged at the bottom of the second plate, the bottom of the connecting leg is hinged to the first U-shaped connector, sliding grooves are formed in the two sides of the second plate, connecting sliding blocks are arranged at the positions, facing the sliding grooves, of the seat plate in a protruding mode, and the connecting sliding blocks are connected with the sliding grooves. A notch matched with the connecting sliding block is formed in the upper end of the sliding groove in the second plate, a second U-shaped connector is arranged on the first plate in a protruding mode, a hinged protrusion is arranged on the side, away from the connecting sliding block, of the seat plate in a protruding mode and hinged to the second U-shaped connector, two leg-through windows are formed in the first plate, split type assembly is achieved, and load bearing is stable.

Description

Technical Field

[0001] This invention relates to the field of supermarket shopping cart technology, and specifically to a shopping cart. Background Technology

[0002] As a common handling tool in supermarkets, warehouses, and logistics, the ease of use, storage and transportation costs, and maintenance efficiency of shopping carts directly affect the user experience. Currently, most supermarket shopping carts on the market have a one-piece welded structure, such as the supermarket shopping cart disclosed in domestic design patent application number CN201130084134.3. This type of shopping cart is suitable for the baby seat structure that most supermarket shopping carts have, i.e., a flip-up seat structure. However, its flip-up structure is that the seat plate is hinged to the side panel of the basket. The movement of the seat plate at this end can only be a circular rotation around the connecting axis. The other end of the seat plate is connected to the connecting rod on the back panel to achieve opening, closing, and folding. Since the connecting rod on the back panel is locked in place, the seat plate is always exposed to the environment when folded up. It is susceptible to environmental damage or damage from items placed in the storage state when the table and chair are not in use. This can shorten the life of the seat plate and prevent it from working properly.

[0003] Meanwhile, the core components of this type of handcart, such as the frame, basket, and wheel frame, are fixedly connected by welding. Although this provides a certain structural strength, wheel frame deformation, basket weld detachment, and handle breakage are frequent malfunctions during use. However, because the components are fixed by welding, it is impossible to disassemble and replace a single damaged part. The entire cart must be scrapped or returned to the factory for overall welding repair, which is difficult and costly to maintain and repair, and also presents the problem of high transportation costs.

[0004] Therefore, we need a stroller that can be assembled in separate parts and has a more stable and longer capacity to support infants and children. Summary of the Invention

[0005] This invention provides a stroller that, while allowing for modular assembly, has a more stable and longer-lasting capacity to carry infants and children.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a handcart, including a basket body, the basket body including a basket and a seat back panel, the seat back panel including a first plate, a second plate and a seat plate, the top two ends of the first plate are provided with connecting shaft tubes protruding outward, the connecting shaft tubes are provided with connecting inner cavities, the basket is fastened to the basket side wing, the basket side wing is provided with a protruding connecting bushing, the connecting shaft tube is inserted into the connecting bushing and connected by a pin, the first plate is provided with a first U-shaped connector on the side facing the second plate, the bottom of the second plate is provided with a connecting leg downward, the bottom of the connecting leg is hinged to the first U-shaped connector, the second plate is provided with a sliding groove on both sides, the seat plate is provided with a connecting slider protruding towards the sliding groove, the connecting slider is connected to the sliding groove, the second plate is provided with a notch at the upper end of the sliding groove to match the connecting slider, the first plate is provided with a second U-shaped connector protruding, the seat plate is provided with a hinge protrusion on the side away from the connecting slider, the hinge protrusion is hinged to the second U-shaped connector, the first plate is provided with two through-leg windows.

[0007] As a preferred embodiment of the technical solution of this application, the second plate is provided with a card interface near the bottom center line, and the bottom of the seat plate is provided with an insert for the card interface. When the seat is in use, the card interface is connected to the insert.

[0008] As a preferred embodiment of the technical solution of this application, the second plate includes a side arm, a connecting plate and an inclined support plate. The two sides of the connecting plate are connected to the side arm on the same side. The sliding groove is provided on the side arm. The inclined support plate is provided with the card interface. The connection between the connecting plate and the inclined support plate is an arc-shaped connection part.

[0009] As a preferred embodiment of the technical solution of this application, the side arm protrudes from the connecting leg and is provided with a limiting block, the limiting block is recessed downward and is provided with a limiting recess, and the seat plate is provided with a mating insert for the limiting recess.

[0010] As a preferred embodiment of the technical solution of this application, the limiting block includes a shell and an insert. The shell includes an upwardly oriented opening. The insert is disposed in the inner cavity of the shell. The bottom of the insert is connected to the shell by a spring. The insert has an extension rod protruding towards the side arm connection. One end of the extension rod inserted into the slide groove has a rack plate. The rack plate is connected to a gear disposed on the inner wall of the slide groove. The inner wall of the slide groove also has a prompting rod that can extend out of the side arm. The side arm has a first elongated hole for the prompting rod. The bottom of the prompting rod is threaded. The gear meshes with the prompting rod.

[0011] As a preferred embodiment of the technical solution of this application, a limiting protrusion is provided on the inner wall of the slide groove, and a bottom hole is provided on the side arm for the limiting protrusion. When the load-bearing position is reinforced, the indicator rod passes through the bottom hole and connects with the locking member provided in the connecting leg. The locking member includes a contact rod, a connecting rod and a locking head. The contact rod can extend out of the connecting leg and connect with the indicator rod. The locking head is connected to a hook head that extends into the connecting leg. The hook head is provided on the top of the reinforcing rod. The bottom of the reinforcing rod is connected to the connecting leg by a spring hinge. The reinforcing rod has a connecting groove recessed on the side away from the hook head. The first plate has a connecting rod for the connecting groove.

[0012] As a preferred embodiment of the technical solution of this application, the connecting leg is provided with a second elongated hole at the connection point with the hook head. The length of the second elongated hole is less than the distance from the upper end of the hook head to the lower end of the locking head when the locking head and the hook head are initially separated, and the length of the second elongated hole is greater than the height of the hook head.

[0013] As a preferred embodiment of the technical solution of this application, the top of the indicator rod is provided with a top cover, the width of which is wider than the width of the first elongated hole. When the top cover is connected to the elongated hole, the indicator rod is located in a non-indicating position or a reinforced load-bearing position.

[0014] As a preferred embodiment of the technical solution of this application, the seat plate includes a base plate and a reinforcing plate. The base plate is recessed with a receiving recess, and the reinforcing plate is hinged to the base plate and disposed in the receiving recess.

[0015] In summary, the present invention has the following beneficial effects.

[0016] 1. By changing the original one-piece handcart structure, a separate basket and seat back panel are designed to achieve convenient assembly, reduce maintenance difficulty and maintenance costs.

[0017] 2. The seat back panel is designed with optimized features. By considering the relative positions of the first panel, the second panel, and the seat panel, as well as the connection between them, the seat panel is positioned between the first and second panels when the seat back panel is folded up. This ensures that the seat panel is well protected by the first and second panels, extending its service life and improving its stability.

[0018] 3. A card interface is provided on the second plate, which is connected to the insert to strengthen the connection between the seat and the second plate. Since the second plate is tilted when the seat is in use, after the insert is vertically inserted into the card interface, when the child sits on the seat, it exerts a downward force on the second plate. The tilted second plate, after receiving the downward force from the seat, generates a component force tilted downward towards the connection between the first and second plates, transferring part of the force to the connection between the first and second plates. The connection between the first and second plates bears part of the weight, improving the load-bearing strength of the seat when in use.

[0019] 4. A limit block is set up. Through the embedded part and spring, the weight of the child on the seat is sensed. The extension rod, gear and indicator rod are transmitted. When the child is overweight, the indicator rod pops out to remind the customer that the child is overweight and can choose not to ride or move the control indicator rod to increase the load-bearing capacity. This increases the upper limit of the stroller's load-bearing capacity, so that children who are overweight can continue to ride. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of a handcart.

[0022] Figure 2 This is a schematic diagram of the overall structure of a handcart with its lowest point.

[0023] Figure 3 This is a schematic diagram of the seat back panel in the seat usage state of a handcart.

[0024] Figure 4 This is a schematic diagram of the first plate in a handcart.

[0025] Figure 5 This is a schematic diagram of the second plate in a handcart.

[0026] Figure 6 This is a schematic diagram of a seat plate in a handcart.

[0027] Figure 7 This is a schematic diagram of the second plate in a handcart.

[0028] Figure 8 for Figure 7 A magnified view of the details at point B in the middle.

[0029] Figure 9This is a side view of a side arm in a handcart.

[0030] Figure 10 for Figure 9 A magnified view of the details at point C.

[0031] Figure 11 This is a cross-sectional view of the side arm of a handcart under overload conditions.

[0032] Figure 12 This is a schematic diagram of a handcart when the indicator lever just touches the locking element and is connected to the locking element and the reinforcing rod.

[0033] Figure 13 This is a schematic diagram of the bottom plate of a handcart.

[0034] In the diagram: 1. Basketball hoop, 2. Seat back panel, 3. First plate, 4. Second plate, 5. Seat plate, 6. Connecting shaft tube, 7. Connecting inner cavity, 8. Basketball hoop side wing, 9. Connecting bushing, 10. First U-shaped connector, 11. Connecting leg, 12. Slide groove, 13. Connecting slider, 14. Notch, 15. Second U-shaped connector, 16. Hinge protrusion, 17. Through leg window, 18. Snap-fit ​​interface, 19. Insert, 20. Side arm, 21. Connecting plate, 22. Inclined support plate, 23. Arc 24. Connecting part, 25. Limiting block, 26. Limiting recess, 27. Outer shell, 28. Inset, 29. Spring, 30. Extending rod, 31. Rack plate, 32. Gear, 33. Indicating rod, 34. First elongated hole, 35. Limiting protrusion, 36. Bottom hole, 37. Contact rod, 38. Connecting rod, 39. Locking head, 40. Hook head, 41. Reinforcing rod, 42. Connecting groove, 44. Second elongated hole, 45. Top cover, 46. Bottom plate, 47. Reinforcing plate, 48. Accommodating recess. Detailed Implementation

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0036] Example 1

[0037] As attached Figure 1 To be continued Figure 13As shown, a handcart includes a basketball hoop body, characterized in that the basketball hoop body comprises a basketball hoop 1 and a seat back panel 2, which are configured as separate structures. The seat back panel 2 is hinged to the basketball hoop 1 by a pin, and the two can be separated by simply removing the pin during maintenance. A side wing 8 of the basketball hoop is inserted into the basketball hoop 1 with an interference fit, and the side wing 8 can be separated from the basketball hoop 1 by simply pressing it during maintenance. The seat back panel 2 includes a first plate 3, a second plate 4, and a seat plate 5. The top two ends of the first plate 3 have connecting shaft tubes 6 protruding outwards, and the connecting shaft tubes 6 have connecting inner cavities 7. The basket side wings 8 have protruding connecting bushings 9. The connecting shaft tubes 6 are inserted into the connecting bushings 9 and connected by pins. The first plate 3 has a first U-shaped connector 10 on the side facing the second plate 4. The bottom of the second plate 4 has a connecting leg 11 facing downwards. The bottom of the connecting leg 11 is hinged to the first U-shaped connector 10. The second plate 4 has sliding grooves 12 on both sides. The seat plate 5 has a connecting slider 13 protruding towards the sliding groove 12. The connecting slider 13 is connected to the sliding groove 12. The second plate 4 has a notch 14 at the upper end of the sliding groove 12 to match the connecting slider 13. The first plate 3 has a second U-shaped connector 15 protruding. The seat plate 5 has a hinge protrusion 16 protruding on the side away from the connecting slider 13. The hinge protrusion 16 is hinged to the second U-shaped connector 15. The first plate 3 has two leg windows 17.

[0038] The second plate 4 has a card slot 18 near its bottom center line, and the bottom of the seat plate 5 has an insert 19 corresponding to the card slot 18. When the seat is in use, the card slot 18 and the insert 19 are connected. The connection between the card slot 18 and the insert 19 strengthens the connection between the seat plate 5 and the second plate 4. Since the second plate 4 is tilted when the seat is in use, after the insert 19 is vertically inserted into the card slot 18, when the child sits on the seat plate 5, it exerts a downward force on the second plate 4. The tilted second plate 4, after receiving the downward force from the seat plate 5, generates a component force tilted downward towards the connection between the first plate 3 and the second plate 4, transferring part of the force to the connection between the first plate 3 and the second plate 4. The connection between the first plate 3 and the second plate 4 bears part of the weight, improving the load-bearing strength of the seat when in use.

[0039] The second plate 4 includes a side arm 20, a connecting plate 21, and an inclined support plate 22. The connecting plate 21 is connected to the side arm 20 on both sides. A sliding groove 12 is provided on the side arm 20. A locking interface 18 is provided on the inclined support plate 22. The connection between the connecting plate 21 and the inclined support plate 22 is an arc-shaped connection part 23. By setting the end of the inclined support plate 22 connected to the connecting plate 21 to be an arc-shaped structure, and the connecting plate 21 to be designed with an arc-shaped surface at the connection point in accordance with its connection relationship, while the top of the connecting plate 21 is flat, the curvature increases as it approaches the connection point with the inclined support plate 22. Through the setting from a flat surface to an arc-shaped surface, a more stable connection is achieved.

[0040] A limiting block 24 protrudes from the side arm 20 near the connecting leg 11. The limiting block 24 is recessed downward to form a limiting recess 25. The seat plate 5 is provided with a mating plate for the limiting recess 25. The mating plate is a protruding vertical plate set at the bottom of the base plate 46. The mating plate is engaged with the limiting recess 25 for fixation.

[0041] As attached Figure 12 To be continued Figure 13 As shown, the limiting block 24 includes a housing 27 and an insert 28. The housing 27 has an upwardly facing opening. The insert 28 is disposed in the inner cavity of the housing 27. The bottom of the insert 28 is connected to the housing 27 by a spring 29. The insert 28 has an extension rod 30 protruding from the side arm 20. One end of the extension rod 30 inserted into the slide groove 12 is provided with a rack plate 31. The rack plate 31 is connected to a gear 32 disposed on the inner wall of the slide groove 12. The inner wall of the slide groove 12 is also provided with a prompting rod 33 that can extend out of the side arm 20. The side arm 20 has a first elongated hole 34 for the prompting rod 33. The bottom of the prompting rod 33 is threaded. The gear 32 meshes with the prompting rod 33.

[0042] Supermarket shopping carts typically have a weight capacity of 15KG. When a child riding in a cart is too heavy, the seat 5 experiences greater gravity, putting more downward pressure on the insert 28. The spring 29 is compressed further, causing the rack 31 inserted into the slide groove 12 to move downward. The gear 32 meshing with the rack 31 rotates, simultaneously driving the indicator lever 33 upward. Since the downward travel of the spring 29 is relatively small, the gear 32 can be adjusted into a gear set according to the actual situation. Through the transmission of different sizes, the indicator lever 33 extends a sufficient distance to provide a sufficient warning, letting the customer know that their child has exceeded the normal weight capacity of the shopping cart.

[0043] The top of the indicator rod 33 is provided with a top cover 45. The width of the top cover 45 is wider than the width of the first elongated hole 34. When the top cover 45 is connected to the first elongated hole 34, the indicator rod 33 is in a non-indicating position or a reinforced load-bearing position.

[0044] Considering that sometimes children are overweight (not particularly overweight) but still want to continue riding, it is necessary to temporarily increase the weight-bearing capacity of the stroller. In this case, the top cover 45 can be controlled to move the indicator rod 33 away from the gear 32, while the positioning is completed by limiting the position protrusion 35. Then, the top cover 45 is pressed down, causing the indicator rod 33 to move downward until it contacts the contact rod 37. Then, the top cover 45 is pressed down again, and the indicator rod 33 pushes the locking member downward, separating the locking head 39 from the hook head 40. The reinforcing rod 41 is subjected to the action of the bottom spring hinge to make a circular motion away from the second plate 4. During the rotation, it engages with the mating rod, which is a round rod fixed on the second plate 4, to complete the reinforced connection between the second plate 4 and the first plate 3, achieving a more stable connection between the second plate 4 and the first plate 3 and improving the weight-bearing capacity.

[0045] Furthermore, instructions can be engraved on the surface of the second panel 4, indicating that a warning lever 33 will extend when the child is overweight. At this time, the child can choose to stop riding or move the top cover 45 connected to the warning lever 33 to one side where it cannot be moved and press down to increase the weight limit of the stroller so that the child can continue riding. After using the increased weight limit, the top cover 45 needs to be pulled out and moved back to its original position.

[0046] The inner wall of the slide 12 is provided with a limiting protrusion 35, and the side arm 20 is provided with a bottom hole 36 for the limiting protrusion 35. When the load-bearing position is reinforced, the indicator rod 33 passes through the bottom hole 36 and connects with the locking member provided in the connecting leg 11. The locking member includes a contact rod 37, a connecting rod 38 and a locking head 39. The contact rod 37 can extend out of the connecting leg 11 and connect with the indicator rod 33. The locking head 39 is connected with the hook 40 that extends into the connecting leg 11. The hook 40 is provided at the top of the reinforcing rod 41. The bottom of the reinforcing rod 41 is connected to the connecting leg 11 by a spring hinge. The reinforcing rod 41 is recessed on the side away from the hook 40 and is provided with a connecting groove 42. The first plate 3 is provided with a mating rod 43 for the connecting groove 42.

[0047] The connecting leg 11 is provided with a second elongated hole 44 at the connection with the hook head 40. The length of the second elongated hole 44 is less than the distance from the upper end of the hook head 40 to the lower end of the locking head 39 when the locking head 39 and the hook head 40 are initially separated, and the length of the second elongated hole 44 is greater than the height of the hook head 40.

[0048] The seat plate 5 includes a base plate 46 and a reinforcing plate 47. The base plate 46 is recessed with a receiving recess 48, and the reinforcing plate 47 is hinged to the base plate 46 and disposed in the receiving recess 48. By configuring the seat plate 5 as a split base plate 46 and reinforcing plate 47, the stability and load-bearing capacity are further improved.

[0049] In the description of this invention, it should be understood that the terms "front and back," "left and right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component 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 the invention.

[0050] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0051] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A handcart, characterized in that, The basket includes a basket body, characterized in that the basket body includes a basket (1) and a seat back panel (2), the seat back panel (2) includes a first plate (3), a second plate (4) and a seat plate (5), the top two ends of the first plate (3) are provided with connecting shaft tubes (6) protruding outward, the connecting shaft tubes (6) are provided with connecting inner cavities (7), the basket (1) is fastened to the basket side wing (8), the basket side wing (8) is provided with a protruding connecting bushing (9), the connecting shaft tube (6) is inserted into the connecting bushing (9) and connected by a pin, the first plate (3) is provided with a first U-shaped connector (10) facing the second plate (4), the bottom of the second plate (4) is provided with a connecting leg (11) downward, the connecting leg (11) The bottom is hinged to the first U-shaped connector (10). The second plate (4) has a sliding groove (12) on both sides. The seat plate (5) has a connecting slider (13) protruding towards the sliding groove (12). The connecting slider (13) is connected to the sliding groove (12). The second plate (4) has a notch (14) at the upper end of the sliding groove (12) to match the connecting slider (13). The first plate (3) has a second U-shaped connector (15) protruding. The seat plate (5) has a hinge protrusion (16) protruding on the side away from the connecting slider (13). The hinge protrusion (16) is hinged to the second U-shaped connector (15). The first plate (3) has two through-leg windows (17).

2. A handcart according to claim 1, characterized in that, The second plate (4) is provided with a card interface (18) near the bottom center line. The bottom of the seat plate (5) is provided with an insert (19) for the card interface (18). When the seat is in use, the card interface (18) is connected to the insert (19).

3. A handcart according to claim 2, characterized in that, The second plate (4) includes a side arm (20), a connecting plate (21) and an inclined support plate (22). The connecting plate (21) is connected to the side arm (20) on the same side on both sides. The sliding groove (12) is provided on the side arm (20). The inclined support plate (22) is provided with the card interface (18). The connection between the connecting plate (21) and the inclined support plate (22) is an arc-shaped connection part (23).

4. A handcart according to claim 3, characterized in that, The side arm (20) has a protruding limiting block (24) near the connecting leg (11), the limiting block (24) has a downward recessing limiting recess (25), and the seat plate (5) has a mating insert for the limiting recess (25).

5. A handcart according to claim 4, characterized in that, The limiting block (24) includes a shell (27) and an insert (28). The shell (27) includes an upwardly facing opening. The insert (28) is disposed in the inner cavity of the shell (27). The bottom of the insert (28) is connected to the shell (27) by a spring (29). The insert (28) has an extension rod (30) protruding towards the connection of the side arm (20). The end of the extension rod (30) inserted into the slide (12) is provided with a rack plate (31). The rack plate (31) is connected to a gear (32) disposed on the inner wall of the slide (12). The inner wall of the slide (12) is also provided with a prompting rod (33) that can extend out of the side arm (20). The side arm (20) is provided with a first elongated hole (34) for the prompting rod (33). The bottom of the prompting rod (33) is provided with a thread. The gear (32) meshes with the prompting rod (33).

6. A handcart according to claim 5, characterized in that, The inner wall of the slide (12) is provided with a limiting protrusion (35). The side arm (20) is provided with a bottom hole (36) for the limiting protrusion (35). When the load-bearing position is reinforced, the indicator rod (33) passes through the bottom hole (36) and is connected to the locking member provided in the connecting leg (11). The locking member includes a contact rod (37), a connecting rod (38) and a locking head (39). The contact rod (37) can extend out of the connecting leg (11) and connect with the indicator rod (33). The locking head (39) is connected to the hook (40) that extends into the connecting leg (11). The hook (40) is provided at the top of the reinforcing rod (41). The bottom of the reinforcing rod (41) is connected to the connecting leg (11) by a spring hinge. The reinforcing rod (41) is recessed on the side away from the hook (40) and is provided with a connecting groove (42). The first plate (3) is provided with a mating rod for the connecting groove (42).

7. A handcart according to claim 6, characterized in that, The connecting leg (11) is provided with a second elongated hole (44) at the connection with the hook (40). The length of the second elongated hole (44) is less than the distance from the upper end of the hook (40) to the lower end of the locking head (39) when the locking head (39) and the hook (40) are initially separated, and the length of the second elongated hole (44) is greater than the height of the hook (40).

8. A handcart according to claim 7, characterized in that, The top of the indicator rod (33) is provided with a top cover (45), the width of the top cover (45) is wider than the width of the first elongated hole (34), and when the top cover (45) is connected to the first elongated hole (34), the indicator rod (33) is in a non-indicating position or a reinforced load-bearing position.

9. A handcart according to claim 1, characterized in that, The seat plate (5) includes a base plate (46) and a reinforcing plate (47). The base plate (46) is recessed with a receiving recess (48). The reinforcing plate (47) is hinged to the base plate (46) and is located in the receiving recess (48).

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