Foldable handcart

Abstract

This utility model discloses a foldable hand-pushed flatbed cart, belonging to the field of handcart technology. It includes a perforated base plate with four omnidirectional wheels mounted on its bottom. A support plate is fixedly mounted on the upper surface of the perforated base plate, and rotating bases are symmetrically fixed to the rear top of the support plate. A push handle is rotatably connected to one of the two rotating bases. A foot-operated locking mechanism for locking the push handle is provided within each rotating base. Storage holes are provided on the front left and right sides of the top of the perforated base plate. A baffle is rotatably connected to the middle section of the inner wall of each storage hole, and a limiting mechanism for limiting the movement of the baffle is provided within each storage hole. This utility model, through its foot-operated locking mechanism and push handle, allows for unlocking by stepping on the connecting rod with one foot. The push handle folds parallel to the perforated base plate, reducing space occupation and providing fail-safe protection. The storage holes, baffles, and limiting mechanisms allow for switching between a protective mode and a flatbed mode, making it suitable for various transportation environments and highly practical.

Description

Technical Field

[0001] This utility model belongs to the field of handcart technology, specifically relating to a foldable handcart. Background Technology

[0002] The handcart is a transport vehicle that is pushed and pulled by human power. It is the ancestor of all vehicles. Although the technology of material handling with handcarts has been continuously developed, handcarts are still used as an indispensable transport tool.

[0003] Existing handcarts are mostly used for logistics transportation. In logistics transportation, small items are stacked on the pallet of the handcart, and then the handcart and the stacked items are transported to the designated location by pushing the handle. However, because the flatbed cart needs to be pushed by a pusher, the bottom plate and the pusher are perpendicular to each other, which usually makes the overall space occupied by the handcart relatively large, making it inconvenient to store. In addition, due to the lack of a protective mechanism, there is a risk that the goods will fall off the bottom plate when transporting them. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a foldable hand-pushed flatbed cart.

[0005] The technical solution adopted to solve the above technical problems is: a foldable hand-pushed flatbed cart, including a hollow base plate, four universal wheels installed at the bottom of the hollow base plate, a support plate fixedly installed on the upper surface of the hollow base plate, rotating bases symmetrically fixed to the rear top of the support plate, a push handle rotatably connected inside the two rotating bases, a foot locking mechanism for locking the push handle inside the rotating base, storage holes opened on the front left and right sides of the top of the hollow base plate, a baffle rotatably connected to the middle section of the inner wall of each storage hole, and a limiting mechanism for limiting the position of the baffle inside each storage hole; The foot pedal locking mechanism includes a fixed groove at the bottom of the push handle, a movable hole vertically opened on the side wall of the rotating base, and a locking block slidably connected to the inner wall of the rotating base. The inner side wall of the fixed groove is fixed with a locking gear, the bottom of the locking block is fixed with a spring, the top of the locking block is provided with a locking tooth groove, and a connecting rod is welded and fixed between two locking blocks.

[0006] Furthermore, the locking blocks are all located below the locking gears, the locking tooth grooves are all locked in engagement with the locking gears, and the side wall of the connecting rod is slidably connected to the inner side wall of the movable hole.

[0007] The above technical solution employs a gear and tooth groove meshing locking method, which has a large contact area and high mechanical strength, ensuring safety and stability during the pushing process. To unlock the push handle, simply step on the connecting rod to slide the locking block downwards until the locking tooth groove disengages from the locking gear. The folding steps are simple and require no manual intervention, thus improving operational efficiency.

[0008] Furthermore, the limiting mechanism includes limiting holes that are vertically and evenly opened on the side wall of the baffle, and a spring sheet fixed to the inner side wall of the receiving hole. The side wall of the spring sheet facing the limiting hole is bent from top to bottom and has several elastic protrusions, all of which correspond to the position of the limiting hole.

[0009] Through the above technical solution, the elastic protrusion on the spring sheet is precisely matched with the limiting hole of the baffle, which supports the folding and storage of the baffle and the locking of the use state, effectively preventing the baffle from falling off on its own due to vibration during transportation. The structure is simple and stable.

[0010] Furthermore, both ends of the baffle are chamfered, and when the baffle is flipped downwards, its top end is on the same plane as the upper surface of the support plate. When the baffle is flipped upwards, its top end is above the support plate. The width of the baffle is greater than the thickness of the hollow base plate.

[0011] With the above technical solution, the three baffles flip upwards and stand upright to form an effective protective barrier to prevent goods from slipping during transportation. It is especially suitable for handling boxed, bagged, or loose items. After the baffles flip downwards, their tops are flush with the support plate to form a complete flat working surface, which is convenient for handling large-sized boards, furniture, and other flat objects. It has multiple modes to adapt to different scenarios and is highly practical.

[0012] Furthermore, a protective strip is sleeved and fixed between the vertical rods on both sides of the push handle. The protective strip has a fixing strip extending from both the left and right sides. The rear wall of the protective strip is fixedly installed with a magnetic snap fastener corresponding to the number of fixing strips. The rear wall of the fixing strip is fixed with a magnetic nut fastener corresponding to the position of the adjacent magnetic snap fastener.

[0013] Through the above technical solution, the combination design of the protective belt and magnetic buckle can form a flexible protective net at the rear, which together with the three rigid baffles forms a complete cargo protection space to prevent small items from falling from the rear. In addition, the magnetic buckle and magnetic female buckle cooperate to facilitate the installation and removal of the protective belt.

[0014] Furthermore, gripping holes are provided on the front left and right sides of the top of the hollow base plate.

[0015] The above technical solution incorporates gripping holes around the vehicle, making it easier for users to lift and move the vehicle at different angles, especially when loading and unloading goods or going up and down stairs, which saves more effort.

[0016] Furthermore, each of the storage holes has a pressing groove at one end.

[0017] The above technical solution provides space for the fingers to apply force, and the lever principle makes the operation of flipping the baffle easier and prevents fingers from getting pinched.

[0018] Furthermore, the hollowed-out base plate is made of aluminum alloy.

[0019] Through the above technical solutions, the hollow design of the hollow base plate takes into account both ventilation and drainage needs and weight reduction goals, and the aluminum alloy material combines lightweight and load-bearing capacity, corrosion resistance and high strength.

[0020] The beneficial effects of this utility model are as follows: (1) By setting a foot locking mechanism and push handle, two locking blocks are linked by a connecting rod. When the user steps on the connecting rod with one foot, the locking on both sides of the push handle can be released at the same time. The operation is extremely labor-saving and convenient. After the foot is released, the locking blocks automatically reset under the action of the spring. The push handle and the hollow base plate are parallel to each other and folded, reducing the space occupied. It has failure protection characteristics to prevent accidental folding of the push handle due to misoperation. (2) Through the storage holes, baffles and limiting mechanisms, the baffles can be folded in all directions to achieve flexible transformation of spatial form. In the protective mode, the baffles flip up and stand upright to form an effective protective railing to prevent goods from slipping during transportation. In the flat mode, the baffles flip down and their top is flush with the bearing plate to form a complete flat working surface, which is convenient for handling large-sized boards, furniture and other flat objects, and is highly practical. Attached Figure Description

[0021] Figure 1 This is a diagram showing the usage status of the foldable hand-pushed flatbed cart of this utility model; Figure 2 This is a diagram showing the folded state of the foldable hand-pushed flatbed cart of this utility model; Figure 3 Partial structural diagram of the foldable hand-pushed flatbed cart of this utility model; Figure 4 This is a partial structural diagram of the foot pedal locking mechanism of the foldable hand-pushed flatbed cart of this utility model; Figure 5 This is a three-dimensional view of the guardrail of the foldable hand-pushed flatbed cart of this utility model; Figure 6 This is a structural diagram of the limiting mechanism of the foldable hand-pushed flatbed cart of this utility model; Figure 7 yes Figure 1 Enlarged view of point A.

[0022] Reference numerals: 1. Hollowed-out base plate; 2. Casters; 3. Support plate; 4. Rotating base; 5. Push handle; 6. Foot pedal locking mechanism; 7. Protective belt; 8. Baffle; 9. Limiting mechanism; 101. Grip hole; 102. Storage hole; 103. Pressing groove; 601. Fixing groove; 602. Locking gear; 603. Locking block; 604. Locking tooth groove; 605. Spring; 606. Connecting rod; 607. Movable hole; 701. Fixing belt; 702. Magnetic buckle; 703. Magnetic buckle; 901. Limiting hole; 902. Spring piece; 903. Elastic protrusion. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] like Figures 1-7 As shown, the foldable hand-pushed flatbed cart of this embodiment includes a hollow base plate 1. The hollow base plate 1 has grip holes 101 on the front left and right sides of the top. The grip holes 101 are designed around the perimeter to facilitate the user to lift the vehicle at different angles, which is especially helpful when loading and unloading goods or going up and down stairs. The hollow base plate 1 is made of aluminum alloy. The hollow design takes into account the ventilation and drainage needs and the weight reduction goal. The aluminum alloy material takes into account both lightweight and load-bearing capacity, corrosion resistance and high strength. Four universal wheels 2 are installed at the bottom of the hollow base plate 1. A bearing plate 3 is fixedly installed on the upper surface of the hollow base plate 1. A rotating base 4 is symmetrically fixed to the top rear of the bearing plate 3. A push handle 5 is rotatably connected in the two rotating bases 4. A foot locking mechanism 6 is provided in the rotating base 4 to lock the push handle 5. Storage holes 102 are opened on the front left and right sides of the top of the hollow base plate 1. A baffle 8 is rotatably connected in the middle section of the inner wall of the storage hole 102. A limiting mechanism 9 is provided in the storage hole 102 to limit the baffle 8. The foot pedal locking mechanism 6 includes a fixed groove 601 at the bottom of the push handle 5, a movable hole 607 vertically formed on the side wall of the rotating base 4, and a locking block 603 slidably connected to the inner wall of the rotating base 4. A locking gear 602 is fixed to the inner wall of the fixed groove 601. A spring 605 is fixed to the bottom of each locking block 603. A locking tooth groove 604 is formed on the top of each locking block 603. A connecting rod 606 is welded and fixed between two locking blocks 603. Each locking block 603 is located below the locking gear 602, and the locking tooth groove 604 engages with the locking gear 602. The side wall of the connecting rod 606 is slidably connected to the inner wall of the movable hole 607, providing locking and limiting when the push handle 5 is folded or extended. Driven by spring 605, locking block 603 automatically engages with locking gear 602. This, combined with the sliding limit of connecting rod 606 and movable hole 607, ensures the push handle is securely locked in both unfolded and folded states, preventing accidental folding of the push handle 5. To release the lock on the push handle 5, simply step on connecting rod 606 to slide locking block 603 downwards until locking tooth groove 604 disengages from locking gear 602. The folding process is simple, requiring no manual intervention and improving operational efficiency. The gear and tooth groove meshing locking method provides a large contact area and high mechanical strength, reliably fixing the push handle 5 in a vertical working position. It will not loosen under pushing and pulling forces, ensuring safe and stable operation during the pushing process. The limiting mechanism 9 includes limiting holes 901 vertically and evenly opened on the side wall of the baffle 8 and a spring piece 902 fixed to the inner side wall of the storage hole 102. The side wall of the spring piece 902 facing the limiting hole 901 is bent from top to bottom and has several elastic protrusions 903. The elastic protrusions 903 are all corresponding to the positions of the limiting holes 901. The elastic protrusions 903 on the spring piece 902 are precisely matched with the limiting holes 901 of the baffle 8, supporting the locking of the baffle 8 in the folded storage and use state. When limiting, the baffle 8 is flipped horizontally with force to squeeze the elastic protrusions 903 and release the locking of the limiting holes 901. After the flip is completed, the elastic protrusions 903 automatically protrude into the limiting holes 901 with their elasticity to lock again, effectively preventing the baffle 8 from falling down on its own due to vibration during transportation. The structure is simple and stable. Both ends of the baffle 8 are chamfered. When the baffle 8 is flipped downwards, its top end is on the same plane as the upper surface of the support plate 3. When the baffle 8 is flipped upwards, its top end is above the support plate 3. The width of the baffle 8 is greater than the thickness of the hollow base plate 1. The three baffles 8 flip upwards and stand upright to form an effective protective barrier to prevent goods from slipping during transportation. It is especially suitable for handling boxed, bagged, or loose items. When the baffle 8 is flipped downwards, its top end is flush with the support plate 3, forming a complete flat working surface, which is convenient for handling large-sized boards, furniture, and other flat objects. It has multiple modes to adapt to different scenarios and is highly practical. The chamfers at both ends of the baffle 8 prevent the storage hole 102 from obstructing it and ensure that the baffle 8 flips normally. Each of the top ends of the storage hole 102 is provided with a pressing groove 103 to provide space for the fingers to apply force. The lever principle makes the operation of the flip baffle 8 easier and prevents the fingers from getting pinched. A protective strip 7 is fixedly connected between the vertical bars on both sides of the push handle 5. The protective strip 7 has a fixing strip 701 extending from both the left and right sides. The rear wall of the protective strip 7 is fixedly installed with magnetic buckles 702 corresponding to the number of fixing strips 701. The rear wall of each fixing strip 701 is fixed with a magnetic female buckle 703 corresponding to the position of the adjacent magnetic buckle 702. The combination of the protective strip 7 and the magnetic buckles can form a flexible protective net at the rear, which together with the three rigid baffles 8 forms a complete cargo protection space to prevent small items from falling from the rear. The magnetic buckles 702 and the magnetic female buckles 703 cooperate to facilitate the installation and removal of the protective strip 7.

[0025] The working principle of this embodiment is as follows: When the flatbed truck is in use, the baffle 8 is flipped according to the needs of transporting goods. When transporting flat goods, by pressing down on one corner of the baffle 8 in the pressing groove 103, the elastic protrusion 903 is squeezed, releasing the lock on the limiting hole 901. The baffle 8 flips down, and its top is flush with the bearing plate 3, forming a complete flat working surface. When transporting loose items, the baffle 8 flips up and stands upright, forming an effective guardrail to prevent the goods from slipping during transportation. When the baffle 8 is flipped, after the flip is completed, the elastic protrusion 903 automatically protrudes into the limiting hole 901 to lock again using its elasticity, effectively preventing the baffle 8 from falling down on its own due to vibration during transportation. When the vehicle body needs to be folded, the foot pedal connecting rod 606 drives the locking block 603 to slide downward until the locking tooth groove 604 disengages from the locking gear 602 to release the lock. The push plate 5 is flipped to be parallel to the support plate 3. After the foot is released, the locking block 603 automatically resets and locks under the action of the spring 605. It has a fail-safe feature to prevent accidental activation. The whole vehicle can be quickly stored, significantly reducing the storage volume.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A foldable hand-pushed flatbed cart, comprising a perforated base plate (1), wherein four casters (2) are mounted on the bottom end of the perforated base plate (1), characterized in that: A bearing plate (3) is fixedly installed on the upper surface of the hollow base plate (1). A rotating base (4) is symmetrically fixed to the rear top of the bearing plate (3). A push handle (5) is rotatably connected inside the two rotating bases (4). A foot locking mechanism (6) for locking the push handle (5) is provided inside the rotating base (4). A storage hole (102) is opened on the front left and right sides of the top of the hollow base plate (1). A baffle (8) is rotatably connected to the middle section of the inner wall of the storage hole (102). A limiting mechanism (9) for limiting the baffle (8) is provided inside the storage hole (102). The foot pedal locking mechanism (6) includes a fixed groove (601) at the bottom of the push handle (5), a movable hole (607) vertically opened on the side wall of the rotating base (4), and a locking block (603) slidably connected to the inner wall of the rotating base (4). The inner side wall of the fixed groove (601) is fixed with a locking gear (602). The bottom of the locking block (603) is fixed with a spring (605). The top of the locking block (603) is provided with a locking tooth groove (604). A connecting rod (606) is welded and fixed between the two locking blocks (603).

2. The foldable hand-pushed flatbed cart according to claim 1, characterized in that, The locking blocks (603) are all located below the locking gears (602), the locking grooves (604) are all locked to the locking gears (602), and the side wall of the connecting rod (606) is slidably connected to the inner side wall of the movable hole (607).

3. The foldable hand-pushed flatbed cart according to claim 1, characterized in that, The limiting mechanism (9) includes a limiting hole (901) vertically and evenly opened on the side wall of the baffle (8) and a spring piece (902) fixed on the inner side wall of the receiving hole (102). The spring piece (902) is bent from top to bottom on the side wall facing the limiting hole (901) and has several elastic protrusions (903). The elastic protrusions (903) are all corresponding to the positions of the limiting hole (901).

4. The foldable hand-pushed flatbed cart according to claim 1, characterized in that, The baffle (8) has chamfered edges at both ends. When the baffle (8) is flipped downwards, its top end is on the same plane as the upper surface of the support plate (3). When the baffle (8) is flipped upwards, its top end is above the support plate (3). The width of the baffle (8) is greater than the thickness of the hollow base plate (1).

5. The foldable handcart according to claim 1, characterized in that, A guard strip (7) is sleeved and fixed between the vertical rods on both sides of the push handle (5). A fixing strip (701) extends from both the left and right sides of the guard strip (7). A magnetic buckle (702) corresponding to the number of fixing strips (701) is fixedly installed on the rear wall of the guard strip (7). A magnetic female buckle (703) corresponding to the position of the adjacent magnetic buckle (702) is fixed on the rear wall of the fixing strip (701).

6. The foldable handcart according to claim 1, characterized in that, The hollow base plate (1) has gripping holes (101) on the front left and right sides of the top.

7. The foldable hand-pushed flatbed cart according to claim 1, characterized in that, Each of the storage holes (102) has a pressing groove (103) at one end of its top.

8. The foldable hand-pushed flatbed cart according to claim 1, characterized in that, The hollow base plate (1) is made of aluminum alloy.

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