Multi-position foldable single-wheel and double-wheel multifunctional portable cart

Abstract

The cart comprises a cart base, a first connecting rod is fixedly arranged on the front side of the lower end of the cart base, a first wheel seat is fixedly connected to the lower end of the first connecting rod, a guide front wheel is rotationally connected into the first wheel seat, a round rod is inserted into the cart base, and a second connecting rod is fixedly connected to the lower end of the round rod. The round rod penetrates through the slotted hole, a rotating sleeve is rotationally connected to the round rod, a supporting seat is connected to the lower end of the rotating sleeve, a rotating groove is formed in the supporting seat, a power shaft is rotationally connected to the interior of the rotating groove, bearing wheels are connected to the two ends of the power shaft, and a second connecting rod is arranged on the rear side of the lower end of the cart base. A third connecting rod is rotationally connected to the second connecting rod, a second wheel seat is arranged at the lower end of the third connecting rod, and a guide rear wheel is rotationally connected into the second wheel seat. The invention provides the multifunctional portable cart which is more flexible, more portable and more practical, and is suitable for wider application scenes.

Description

Technical Field

[0001] The invention relates to the technical field of material transportation, in particular to a multifunctional portable cart with foldable single and double wheels. Background Art

[0002] With the rapid development of logistics distribution, outdoor activities and emergency rescue, portable carts are an important means of transportation, and their demand is increasing. Although traditional portable carts meet the basic material handling needs to a certain extent, there are still many shortcomings in practical applications. First, the structural design of traditional carts is relatively fixed, and the configuration of the wheels cannot be flexibly adjusted according to different terrains and usage scenarios. This leads to poor controllability and stability of the carts when traveling on complex or uneven ground, and it is easy to roll over or jam. Secondly, the folding mechanism of most existing carts is not simple enough, and complex operating steps are required to complete the conversion from the use state to the folded state, which increases the difficulty of users, especially in emergency situations, and the ability to respond quickly is limited. Furthermore, traditional carts lack effective cargo fixing and fence adjustment functions, making it difficult to ensure safety and stability when loading items of different shapes and sizes, and increasing the risk of items falling.

[0003] In addition, traditional carts usually do not have power assistance systems and speed-changing functions, which makes it difficult and inefficient for users to push them over long distances or under heavy loads. Finally, existing portable carts are rarely equipped with storage space for necessary auxiliary tools, such as brakes, inflators, and tire repair tools. When encountering emergencies, users are often at a loss and unable to solve the problem in time. Summary of the invention

[0004] 1. Technical Problems Solved

[0005] The technical problem to be solved by the present invention is the various problems mentioned in the above background technology, and a multifunctional portable cart with foldable single and double wheels is provided.

[0006] 2. Technical Solution

[0007] To solve the above technical problems, the technical solution provided by the present invention is as follows: a multifunctional portable trolley with multiple foldable single and double wheels, including a trolley base, the trolley base is provided with a plurality of slots, and a plurality of stabilizing rods are inserted in the slots, a connecting rod 1 is fixedly provided on the front side of the lower end of the trolley base, a wheel seat 1 is fixedly connected to the lower end of the connecting rod, a guide front wheel is rotatably connected to the wheel seat 1, a round rod is inserted on the trolley base, the round rod passes through the slot, a rotating sleeve is rotatably connected to the round rod, the lower end of the rotating sleeve is connected to a support seat, a rotating groove is provided on the support seat, a power shaft is rotatably connected in the rotating groove, load-bearing wheels are connected at both ends of the power shaft, a connecting rod 2 is provided on the rear side of the lower end of the trolley base, a connecting rod 3 is rotatably connected to the connecting rod 2, a wheel seat 2 is provided at the lower end of the connecting rod 3, a guide rear wheel is rotatably connected to the wheel seat 2, side rails are provided on both sides of the trolley base, and limiting components for limiting the insertion of the side rails are provided on both sides of the trolley base.

[0008] As an improvement, a limiting sleeve 1 is symmetrically connected to the front side of the cart base, and a front baffle is inserted into the limiting sleeve.

[0009] As an improvement, the locking assembly includes a second limiting sleeve, and a side baffle is inserted into the second limiting sleeve.

[0010] As an improvement, the locking assembly includes a limit plate, a limit hole, a locking pin and a return spring. The limit plate is fixedly connected to the side of the cart base. The limit plate is provided with a limit hole. The limit hole is an octagonal structure. Limit rods that are plugged into the limit holes are provided at both ends of the side rail frame. A locking pin is provided at one end of the limit rod. A return spring is sleeved on the outside of the limit rod between the locking pin and the limit plate.

[0011] As an improvement, a rotating pin is fixedly connected to the lower end of the cart base, a pull rod is rotatably connected inside the rotating pin, an anti-slip handle is provided at the end of the pull rod, and a brake member is provided on the pull rod.

[0012] As an improvement, the power shaft is connected to a speed change disc, the speed change disc is connected to a power motor, and the power motor is transmission-connected to the power shaft via a speed change mechanism in the speed change disc.

[0013] As an improvement, a telescopic sleeve is symmetrically connected to the lower end of the front side of the cart base, and a lifting rod is slidably connected inside the telescopic sleeve.

[0014] As an improvement, an electrical accessories box is fixedly connected to the lower end of the cart base.

[0015] 3. Beneficial Effects

[0016] The advantages of the present invention compared with the prior art are:

[0017] 1. The multi-functional portable foldable single-wheel and double-wheel cart of the present invention achieves high flexibility, portability and practicality through innovative structural design and functional integration. Its unique slot and stabilizing rod plug-in system, as well as the ingenious combination of the front connecting rod 1 and the rear connecting rods 2 and 3, ensure the stable installation and flexible rotation of the guide wheels and the load-bearing wheels, so that the cart can maintain good handling performance in complex terrain. At the same time, the connection design of the power shaft and the speed change plate, combined with the power support provided by the power motor, not only improves the travel efficiency of the cart, but also allows the user to adjust the travel speed according to actual needs to adapt to different usage scenarios.

[0018] 2. The cart of the present invention adopts a variety of folding and quick locking mechanisms, including the front baffle and side baffle in the limiting sleeve, and the locking assembly matched with the octagonal structure limiting hole. These designs greatly simplify the assembly and disassembly process of the cart, so that a single person can easily complete the operation. In particular, the plug-in limiting design of the side rail frame not only enhances the safety of the goods, but also allows the height and angle of the fence to be flexibly adjusted according to the loading requirements, greatly improving the convenience of use.

[0019] 3. The rotatable connection between the pull rod and the rotating pin of the cart of the present invention, together with the configuration of the anti-slip handle and the brake part, further improves the operating comfort and safety of the cart. The lifting rod slidably connected in the telescopic sleeve provides users with the option of lifting in narrow or obstacle-filled environments, increasing the applicability of the cart. Finally, the electrical accessories box fixed at the lower end of the base is convenient for storing various auxiliary tools, such as brakes, inflators, tire repair tools, etc., ensuring that the cart can cope with possible problems when used outdoors. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The invention is a multi-functional portable trolley with foldable single and double wheels. Figure 1 .

[0021] Figure 2 The invention is a multi-functional portable trolley with foldable single and double wheels. Figure 2 .

[0022] Figure 3 The invention is a multi-functional portable trolley with foldable single and double wheels. Figure 3 .

[0023] Figure 4 It is an enlarged view of position A of the multifunctional portable cart with multiple foldable single and double wheels of the present invention.

[0024] Figure 5 It is an enlarged view of the power structure of the foldable single-wheel and double-wheel multifunctional portable cart of the present invention.

[0025] As shown in the figure: 1. Cart base; 2. Slot hole; 3. Stabilizing rod; 4. Connecting rod one; 5. Wheel seat one; 6. Guide front wheel; 7. Round rod; 8. Rotating sleeve; 9. Support seat; 10. Rotating slot; 11. Power shaft; 12. Load-bearing wheel; 13. Connecting rod two; 14. Connecting rod three; 15. Wheel seat two; 16. Guide rear wheel; 17. Side rail; 18. Limiting sleeve one; 19. Front baffle; 20. Limiting sleeve two; 21. Side baffle; 22. Limiting plate; 23. Limiting hole; 24. Locking pin; 25. Reset spring; 26. Rotating pin; 27. Pull rod; 28. Anti-slip handle; 29. ​​Brake parts; 30. Speed ​​change plate; 31. Power motor; 32. Telescopic sleeve; 33. Lifting rod; 34. Electrical accessories box. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] Embodiment 1

[0028] like Figure 1 — Figure 3 As shown, a multifunctional portable trolley with multiple foldable single and double wheels comprises a trolley base 1, wherein the trolley base 1 is provided with a plurality of slot holes 2, wherein a plurality of stabilizing rods 3 are inserted into the slot holes 2, a connecting rod 4 is fixedly provided at the front side of the lower end of the trolley base 1, wherein the lower end of the connecting rod 4 is fixedly connected to a wheel seat 5, wherein a guide front wheel 6 is rotatably connected to the wheel seat 5, a round rod 7 is inserted into the trolley base 1, wherein the round rod 7 passes through the slot hole 2, wherein a rotating sleeve 8 is rotatably connected to the round rod 7, wherein the lower end of the rotating sleeve 8 is connected to a support A support seat 9 is provided with a rotating groove 10, in which a power shaft 11 is rotatably connected, and load-bearing wheels 12 are connected at both ends of the power shaft 11. A connecting rod 2 13 is provided on the rear side of the lower end of the cart base 1, and a connecting rod 3 14 is rotatably connected to the connecting rod 2 13. A wheel seat 2 15 is provided at the lower end of the connecting rod 3 14, and a guide rear wheel 16 is rotatably connected to the wheel seat 2 15. Side rails 17 are provided on both sides of the cart base 1, and limit components for inserting and limiting the side rails 17 are provided on both sides of the cart base 1.

[0029] like Figure 1 — Figure 3As shown, the front side of the cart base 1 is symmetrically connected to a limiting sleeve 18, a front baffle 19 is inserted in the limiting sleeve, the locking assembly includes a limiting sleeve 20, a side baffle 21 is inserted in the limiting sleeve 20, the locking assembly includes a limiting plate 22, a limiting hole 23, a locking pin 24 and a reset spring 25, the limiting plate 22 is fixedly connected to the side of the cart base 1, the limiting plate 22 is provided with a limiting hole 23, the limiting hole 23 is an octagonal structure, limiting rods that are plugged into the limiting hole 23 are provided at both ends of the side rail frame 17, a locking pin 24 is provided at one end of the limiting rod, and a reset spring 25 is sleeved on the outside of the limiting rod between the locking pin 24 and the limiting plate 22.

[0030] like Figure 1 — Figure 3 As shown, the lower end of the cart base 1 is fixedly connected with a rotating pin 26, and a pull rod 27 is rotatably connected inside the rotating pin 26. An anti-slip handle 28 is provided at the end of the pull rod 27, and a brake member 29 is provided on the pull rod 27. A speed change plate 30 is connected to the power shaft 11, and a power motor 31 is connected to the speed change plate 30. The power motor 31 is transmission-connected to the power shaft 11 through a speed change mechanism in the speed change plate 30. A telescopic sleeve 32 is symmetrically connected to the lower end of the front side of the cart base 1, and a lifting rod 33 is slidably connected inside the telescopic sleeve 32. An electrical accessories box 34 is fixedly connected to the lower end of the cart base 1.

[0031] Working principle of the present invention:

[0032] Cart Base and Wheel System

[0033] The core structure of the cart is a cart base 1, which is provided with a plurality of slots 2 for inserting a stabilizing rod 3 to enhance the stability of the structure. A connecting rod 1 4 is fixedly provided at the front side of the lower end of the cart base 1, and a wheel seat 1 5 is connected to the lower end of the connecting rod 1 4, and a guide front wheel 6 is rotatably connected in the wheel seat 1 5 to ensure that the cart can turn flexibly when traveling. A round rod 7 is also inserted into the cart base 1, and the round rod 7 passes through the slot 2 and is connected to the rotating sleeve 8. The lower end of the rotating sleeve 8 is connected to the support seat 9, and a power shaft 11 is rotatably connected in the rotating groove 10 on the support seat 9. The two ends of the power shaft 11 are respectively installed with load-bearing wheels 12 to carry the weight of the goods. A connecting rod 2 13 is provided at the rear side of the lower end of the cart base 1, and the connecting rod 2 13 is rotatably connected to the connecting rod 3 14, and a wheel seat 2 15 is provided at the lower end of the connecting rod 3 14, and a guide rear wheel 16 is rotatably connected in the wheel seat 2 15 to assist the cart to remain stable on uneven ground.

[0034] Side rails and limiter components

[0035] Side rails 17 are provided on both sides of the cart base 1 for enclosing and protecting the loaded articles. The side rails 17 are inserted and limited by a limit assembly to ensure that they will not loosen or fall off during use.

[0036] In one embodiment, the limit assembly may include a limit plate 22, a limit hole 23 of an octagonal structure, a locking pin 24 and a reset spring 25. The limit plate 22 is fixed to the side of the cart base 1, the limit hole 23 is plugged with the limit rods at both ends of the side rail frame 17, a locking pin 24 is provided at one end of the limit rod, and a reset spring 25 is sleeved on the outer side of the limit rod between the locking pin 24 and the limit plate 22. When the side rail frame 17 is inserted into place, the locking pin 24 will automatically snap into the limit hole 23 under the action of the spring, realizing the quick locking and unlocking function.

[0037] In one embodiment, the limiting component is a limiting sleeve 20 , and the limiting sleeve 20 and the side baffle 21 can be installed by plugging them together.

[0038] Front and side panels

[0039] In order to further enhance the safety of the cart and the cargo fixing effect, the front side of the cart base 1 is symmetrically connected to a limiting sleeve 18, and a front baffle 19 is inserted into the limiting sleeve 18 to effectively prevent the cargo from sliding out from the front. Similarly, a side baffle 21 is inserted into the limiting sleeve 20 to adjust the height and angle of the side rail 17 to meet the loading requirements of cargo of different shapes and sizes.

[0040] Tie rods and brake parts

[0041] The lower end of the cart base 1 is fixedly connected with a rotating pin 26, and a pull rod 27 is rotatably connected inside the rotating pin 26. The end of the pull rod 27 is provided with an anti-slip handle 28 to provide a comfortable grip. The pull rod 27 is also provided with a brake member 29, and the user can control the speed of the cart or stop it by operating the brake member 29, thereby enhancing the safety and controllability of use.

[0042] Powertrain

[0043] The power shaft 11 is connected to a speed change plate 30, and the speed change plate 30 is further connected to a power motor 31. The power motor 31 is connected to the power shaft 11 through a speed change mechanism in the speed change plate 30, providing additional power support for the cart and allowing the user to adjust the travel speed according to actual needs. This design is particularly suitable for use over long distances or under heavy loads, and significantly improves transportation efficiency.

[0044] Lifting the bar

[0045] The lower front end of the cart base 1 is symmetrically connected with a telescopic sleeve 32, and a lifting rod 33 is slidably connected in the telescopic sleeve 32. When encountering a narrow or obstacle-filled environment, the user can pull out the lifting rod 33 and carry the cart together by two people, which increases the applicability and flexibility of the cart.

[0046] Electrical accessories box

[0047] The lower end of the cart base 1 is fixedly connected with an electrical accessories box 34 for storing various auxiliary tools, such as brake tools, air pumps, tire repair tools, etc. This not only facilitates the daily use of users, but also ensures that problems encountered during outdoor activities can be solved in time, thereby improving the practicality and reliability of the cart.

[0048] Assembly and disassembly

[0049] The connections between all components are carefully designed to ensure that the transition from folded state to use state is simple and quick. Usually, two people only need about 2 minutes to complete the entire assembly or disassembly process. This efficient design makes the cart take up less space during storage and transportation, and is more convenient to carry.

[0050] In summary, this multi-foldable single- and double-wheeled multifunctional portable cart achieves high flexibility, portability and practicality through innovative structural design and functional integration, and is suitable for various scenarios such as logistics distribution, outdoor activities and emergency rescue.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0053] The present invention and its embodiments are described above, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A multifunctional portable trolley with foldable single and double wheels, characterized in that: The invention comprises a trolley base (1), wherein the trolley base (1) is provided with a plurality of slot holes (2), wherein a plurality of stabilizing rods (3) are inserted into the slot holes (2), a connecting rod (4) is fixedly provided on the front side of the lower end of the trolley base (1), the lower end of the connecting rod (4) is fixedly connected to a wheel seat (5), wherein a guide front wheel (6) is rotatably connected to the wheel seat (5), a round rod (7) is inserted into the trolley base (1), wherein the round rod (7) passes through the slot holes (2), and a rotating sleeve (8) is rotatably connected to the round rod (7), The lower end of the rotating sleeve (8) is connected to a support seat (9), a rotating groove (10) is provided on the support seat (9), a power shaft (11) is rotatably connected in the rotating groove (10), and load-bearing wheels (12) are connected at both ends of the power shaft (11), a second connecting rod (13) is provided on the rear side of the lower end of the cart base (1), a third connecting rod (14) is rotatably connected to the second connecting rod (13), a second wheel seat (15) is provided at the lower end of the third connecting rod (14), and a guide rear wheel (16) is rotatably connected in the second wheel seat (15); Side rail frames (17) are provided on both sides of the cart base (1), and limiting components for inserting and limiting the side rail frames (17) are provided on both sides of the cart base (1).

2. The multifunctional portable trolley with multiple foldable single and double wheels according to claim 1, characterized in that: The front side of the cart base (1) is symmetrically connected to a limiting sleeve (18), and a front baffle (19) is inserted into the limiting sleeve (18).

3. The multifunctional portable trolley with multiple foldable single and double wheels according to claim 1, characterized in that: The locking assembly comprises a second limiting sleeve (20), and a side baffle (21) is inserted into the second limiting sleeve (20).

4. The multifunctional portable trolley with multiple foldable single and double wheels according to claim 1, characterized in that: The locking assembly comprises a limit plate (22), a limit hole (23), a locking pin (24) and a reset spring (25); the limit plate (22) is fixedly connected to the side of the cart base (1); the limit plate (22) is provided with a limit hole (23); the limit hole (23) is an octagonal structure; both ends of the side rail frame (17) are provided with limit rods that are plugged into the limit hole (23); one end of the limit rod is provided with a locking pin (24); a reset spring (25) is sleeved on the outer side of the limit rod between the locking pin (24) and the limit plate (22).

5. The multifunctional portable trolley with multiple foldable single and double wheels according to claim 1, characterized in that: The lower end of the cart base (1) is fixedly connected with a rotating pin (26), and a pull rod (27) is rotatably connected inside the rotating pin (26). An anti-slip handle (28) is provided at the end of the pull rod (27), and a brake member (29) is provided on the pull rod (27).

6. The multifunctional portable trolley with multiple foldable single and double wheels according to claim 1, characterized in that: The power shaft (11) is connected to a speed change disc (30), the speed change disc (30) is connected to a power motor (31), and the power motor (31) is transmission-connected to the power shaft (11) via a speed change mechanism in the speed change disc (30).

7. The multifunctional portable trolley with multiple foldable single and double wheels according to claim 1, characterized in that: A telescopic sleeve (32) is symmetrically connected to the lower front end of the cart base (1), and a lifting rod (33) is slidably connected inside the telescopic sleeve (32).

8. The multifunctional portable trolley with multiple foldable single and double wheels according to claim 1, characterized in that: The lower end of the cart base (1) is fixedly connected to an electrical appliance accessory box (34).

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