A foldable trolley

Abstract

The application discloses a foldable handcart, and relates to the technical field of handcarts, which comprises a bearing plate, a plurality of running wheels arranged at the bottom edge corners of the bearing plate, handrails arranged at the top side edges of the bearing plate, and a hinge assembly arranged on the bearing plate, wherein the handrails are connected to the bearing plate through the hinge assembly.

Description

Technical Field

[0001] This application relates to the technical field of handcarts, and more particularly to a foldable handcart. Background Technology

[0002] As a transportation tool primarily propelled by human power, the handcart has been widely used in daily life and many other fields due to its simple structure. It provides a convenient way to move goods, playing a vital role in everything from everyday household items to small-scale projects and warehouse logistics. It greatly improves the efficiency and convenience of manual handling, becoming an indispensable tool in people's lives and work.

[0003] In the design of traditional handcarts, a combination of rollers, a support plate, and a pusher frame is typically used to achieve basic transportation functions. The rollers provide ease of movement, allowing the handcart to navigate various terrains; the support plate holds the goods to be transported, and its size and shape are designed according to different usage requirements; the pusher frame facilitates the operator's pushing and control of the handcart's direction. This structure is simple and stable, meeting the handling needs of most common goods. However, traditional handcarts have limited capacity to handle specially shaped goods, especially long and narrow items.

[0004] Currently, there are significant drawbacks to using traditional handcarts to transport long, narrow items. If the item is placed horizontally on the handcart, it can easily extend beyond the cart's width during transport, obstructing nearby pedestrians. Conversely, if placed in a different orientation, the item lacks effective securing measures and is prone to slipping. Furthermore, when not in use, traditional handcarts, due to their non-foldable structure, occupy considerable space, taking up significant room in warehouses and other similar spaces, thus hindering efficient space utilization. Utility Model Content

[0005] To facilitate transportation and placement, this application provides a foldable handcart.

[0006] This application provides a foldable handcart, which adopts the following technical solution: A foldable handcart, including a support plate; There are multiple driving wheels, which are respectively located at the four corners of the bottom edge of the support plate; Handrails are positioned opposite each other at the top two edges of the support plate; A hinge assembly is disposed on the support plate, and the handrail is hingedly connected to the support plate through the hinge assembly.

[0007] By adopting the above technical solution, the driving wheels are located at the four corners of the bottom edge of the support plate, which can support the support plate and facilitate the movement of the trolley; the handles are located at the top two sides of the support plate, which makes it easy for users to push the trolley. At the same time, when long and narrow items are placed in the transportation process without affecting other people, the two opposing handles can restrict the long and narrow items and keep them in their placed position; the handles are hinged to the support plate through the hinge assembly, which allows the handles to rotate relative to the support plate, realize the folding function of the trolley, and reduce the space occupied by the trolley.

[0008] Optionally, the hinge assembly includes a hinge shaft and a limiting block; Mounting seats are provided at the four corners of the top edge of the bearing plate. Mounting slots are provided on the mounting seats. The hinge shaft is rotatably connected to the mounting seat and passes through the mounting slot. The end of the handrail is connected to the hinge shaft. The handrail flips and slides in the mounting slot. The limiting block is disposed on the mounting base. When the handrail is flipped upwards away from the bearing plate to a vertical state, the handrail abuts against the limiting block.

[0009] By adopting the above technical solution, the handrail can rotate and slide in the mounting groove through the hinge shaft, realizing the rotation of the handrail relative to the load-bearing plate, which makes the trolley foldable and reduces the space occupied; the limiting block can limit the handrail when it is flipped up to the vertical position, ensuring the stability of the handrail during use.

[0010] Optionally, the end of the handrail is provided with an arc-shaped protrusion, and the mounting base is provided with a connecting seat located on the bottom wall of the mounting groove. The connecting seat has a slot. When the handrail is flipped upward to a vertical position, the arc-shaped protrusion slides into the slot.

[0011] By adopting the above technical solution, when the handrail is flipped upward to a vertical position, the arc-shaped protrusion can slide into the slot of the connecting seat, making the handrail more stable in a vertical position and reducing the possibility of random swaying.

[0012] Optionally, the driving wheel is a swivel wheel.

[0013] By adopting the above technical solution, the foldable handcart uses swivel wheels, which allows the handcart to flexibly change its direction of travel during operation, thus improving the handcart's maneuverability and mobility.

[0014] Optionally, the bottom of the support plate is provided with a support seat, and one side of the support seat is respectively provided on the side of the support seat facing away from the support plate, and they correspond one to one with the driving wheel; The bottom of the support plate is provided with a slide rail extending to the vertical side wall. The slide rail has a sliding groove for the support seat to slide. The sliding groove has a sliding groove on each of the two opposite side walls. The support seat is provided with sliding balls that slide in the groove and correspond one-to-one with each other; The slide rail is slidably connected to a plug-in post, and there are multiple plug-in posts located at the bottom and side wall of the bearing plate, respectively. The side wall of the bearing seat is provided with a plug groove adapted to the plug post; The slide rail is equipped with a drive assembly. When the plug and the plug slot are aligned, the drive assembly drives the plug to insert into the plug slot. The slide rail is equipped with a pushing member. When the side wall of the bearing plate abuts the ground, the pushing member pushes the plug-in post out of the plug-in slot.

[0015] By adopting the above technical solution, after the handrail is folded, one of the opposite driving wheels can be slid onto the side wall of the support plate, which makes it easier to move the handrail while reducing the space occupied when folding and transferring it.

[0016] Optionally, the drive assembly includes a drive spring and a drive bar, the drive bar being slidably connected within the slide rail, and the end of the plug being connected to the drive bar; The drive spring is installed inside the slide rail, with one end of the drive spring abutting against the side of the drive bar facing away from the plug post, and the other end abutting against the slide rail.

[0017] By adopting the above technical solution, the elastic force of the drive spring is used to push the plug into the plug slot, thereby achieving a stable connection between the support seat and the support plate and ensuring the stability of the handcart during use.

[0018] Optionally, the pushing member is a pushing column, which slides through the slide rail, and the pushing column is connected and fixed to the drive bar. One end of the pushing column extends to the outside of the bearing plate.

[0019] By adopting the above technical solution, when the side wall of the bearing plate is in contact with the ground, the drive bar can be pushed by the push column, thereby causing the plug-in column to disengage from the plug-in slot, allowing the bearing seat to enter a free-moving state.

[0020] Optionally, the end of the push column is provided with an arc-shaped structure.

[0021] By adopting the above technical solution, the friction force can be reduced when the arc-shaped structure at the end of the column comes into contact with the ground.

[0022] In summary, this application includes at least one of the following beneficial effects: 1. Handrails are positioned opposite each other on the top two edges of the support plate, making it easy for users to push the trolley. At the same time, when long and narrow items are placed in a way that does not affect other people during transportation, the two opposing handrails can restrain the long and narrow items and keep them in their proper position. 2. The handrail is hinged to the support plate via a hinge assembly, making the trolley foldable. This solves the problem of traditional trolleys taking up a lot of space when not in use, and promotes the rational use of space. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application; Figure 2 This is a schematic diagram of the internal cross-section of Embodiment 1 of this application; Figure 3 yes Figure 2 Enlarged schematic diagram of part A; Figure 4 This is a schematic diagram of the state of the handcart when it is placed in Embodiment 2 of this application; Figure 5 yes Figure 4 Enlarged schematic diagram of part B Figure 6 This is a schematic diagram of the internal structure of Embodiment 2 of this application; Figure 7 This is a schematic diagram of the internal structure of the slide rail in Embodiment 2 of this application.

[0024] Reference numerals: 1. Support plate; 11. Mounting seat; 111. Mounting groove; 12. Connecting seat; 121. Slot; 2. Traveling wheel; 3. Handrail; 4. Hinge assembly; 41. Hinge shaft; 411. Arc-shaped protrusion; 42. Limiting block; 5. Support seat; 51. Insertion groove; 52. Sliding ball; 6. Slide rail; 61. Slide groove; 62. Insertion post; 63. Sliding groove; 7. Drive assembly; 71. Drive spring; 72. Drive bar; 8. Push post. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0026] This application discloses a foldable handcart.

[0027] Example 1 See Figure 1The foldable handcart provided in this application includes a support plate 1, running wheels 2, handles 3, and hinge assembly 4. The running wheels 2 are located at the four corners of the bottom edge of the support plate 1, and the handles 3 are located at the top two sides of the support plate 1. The handles 3 are hinged to the support plate 1 through the hinge assembly 4. This structure allows the handles 3 to be folded when the handcart is not in use, reducing the space occupied by the handcart and making it convenient to store.

[0028] Specifically, the support plate 1 is the main component of the handcart used for placing goods. The support plate 1 is usually made of sturdy and durable materials, such as steel plates or wooden boards. The support plate 1 is generally rectangular in shape, with a flat surface to ensure that goods can be placed stably. To reduce the weight of the support plate 1, a grating structure can also be used.

[0029] The trolley has multiple wheels 2, which are fixed to the four corners of the bottom edge of the support plate 1. The wheels 2 provide the trolley with convenient movement, allowing it to travel flexibly on different terrains. The wheels 2 can be ordinary directional wheels, which have a simple structure, low cost, and are suitable for some occasions where steering requirements are not high.

[0030] There are two handles 3, positioned opposite each other on the top edges of the support plate 1. The handles 3 have an inverted "U" shape, facilitating the operator's pushing and controlling of the trolley's direction. The handles 3 are typically made of metal tubing, such as steel or aluminum alloy, providing strength and toughness. A non-slip sleeve made of rubber or similar material can be installed in the middle of the handles 3 to increase friction and improve hand grip when pushing the trolley.

[0031] See Figure 2 and Figure 3A hinge assembly 4 is disposed on the support plate 1, and the handrail 3 is hingedly connected to the support plate 1 via the hinge assembly 4. The hinge assembly 4 includes a hinge shaft 41 and a limiting block 42. Mounting seats 11 are fixedly connected to the four corners of the top edge of the support plate 1, and the mounting seats 11 are generally fixed to the support plate 1 by welding or bolting. The mounting seats 11 have mounting grooves 111, which extend along the width direction of the support plate 1. The shape and size of the mounting grooves 111 are adapted to the end of the handrail 3 to ensure that the handrail 3 can rotate and slide within the mounting grooves 111. The hinge shaft 41 is rotatably connected to the mounting seat 11 and passes through the mounting grooves 111. The end of the handrail 3 is fixedly connected to the outer periphery of the hinge shaft 41, and the handrail 3 can rotate within the mounting grooves 111 around the hinge shaft 41 near its end. The limiting block 42 is fixedly connected to the end of the handrail 3 and extends to the groove of the mounting groove 111. When the handrail 3 is flipped upwards to a vertical position away from the bearing plate 1, the handrail 3 abuts against the limiting block 42. At this time, the limiting block 42 plays the role of limiting the flipping angle of the handrail 3, ensuring that the handrail 3 can stand stably in the vertical position.

[0032] An arc-shaped protrusion 411 is fixedly connected to the end of the handrail 3, and a connecting seat 12 is fixedly connected to the support base 5. The connecting seat 12 is located on the bottom wall of the mounting groove 111. The connecting seat 12 is generally made of elastic materials such as rubber or plastic. A slot 121 is provided on the top of the connecting seat 12. When the handrail 3 is flipped upward to a vertical position, the arc-shaped protrusion 411 slides into the slot 121, which can further fix the position of the handrail 3 and reduce the possibility of the handrail 3 shaking during transportation. In addition, for ease of use, there is friction between the hinge shaft 41 and the mounting base 11, which helps to maintain the working condition of the handrail 3.

[0033] The implementation principle of the foldable handcart in Embodiment 1 of this application is as follows: This foldable trolley features opposing handles 3, allowing long, narrow items to be placed securely and kept in their proper position during transport without obstructing others. The hinged assembly 4 allows the handles 3 to fold, reducing the space occupied when the trolley is not in use and facilitating storage. This design effectively solves the problems of traditional trolleys, such as items slipping, obstructing others, and taking up too much space, improving the practicality and convenience of the trolley and representing a significant improvement and contribution to existing technology.

[0034] Example 2 See Figure 4 and Figure 5The difference between Embodiment 2 and Embodiment 1 is that the traveling wheel 2 can be a swivel wheel, which can rotate freely, making it convenient for the handcart to change its direction of travel. A swivel wheel generally consists of a wheel body, an axle, and a wheel seat. The wheel body is made of materials such as rubber, which has good wear resistance and shock absorption performance. The axle is used to connect the wheel body and the wheel seat, ensuring that the wheel body can rotate freely. The wheel seat is used to fix the swivel wheel to the bottom of the support plate 1.

[0035] A support seat 5 is provided at the bottom of the support plate 1, and the opposite driving wheels 2 are fixedly installed on the side of the support seat 5 facing away from the support plate 1, one by one. Two slide rails 6 are fixedly connected to the bottom of the support plate 1, and the slide rails 6 correspond one-to-one with the support seats 5. The slide rails 6 extend from the bottom edge of the support plate 1 to a vertical side wall. The slide rails 6 are generally made of metal materials, such as stainless steel or aluminum alloy. The slide rails 6 have sliding grooves 63, and the extension trajectory of the sliding grooves 63 coincides with the extension trajectory of the slide rails 6. The support seats 5 slide within the sliding grooves 63. Sliding grooves 61 are respectively provided on the opposite side walls of the sliding grooves 63, and the sliding grooves 61 extend along the extension trajectory of the slide rails 6.

[0036] See Figure 5 and Figure 6 Each of the opposite sides of the bearing seat 5 is fixedly connected to a sliding ball 52, which is engaged and slidably connected within the slide groove 61. The sliding ball 52 is generally made of materials such as steel balls, which have good wear resistance. The arrangement of the sliding ball 52 allows the bearing seat 5 to slide along the slide rail 6 while preventing the bearing seat 5 from disengaging from the slide rail 6.

[0037] The slide rail 6 is slidably connected to a plug-in post 62, which protrudes beyond the slide rail 6. There are multiple plug-in posts 62, located at the bottom and side wall of the support plate 1. The side wall of the support seat 5 is provided with a plug-in groove 51 adapted to the plug-in post 62. When the support seat 5 slides to the position of abutting the end of the groove wall on one side of the sliding groove 63, the plug-in post 62 aligns with the corresponding plug-in groove 51, and the plug-in post 62 is inserted into the plug-in groove 51, which can fix the position of the support seat 5.

[0038] The slide rail 6 is equipped with a drive assembly 7, which includes a drive spring 71 and a drive bar 72. The drive bar 72 is adapted to the slide rail 6 and slidably connected within the slide rail 6. One end of the insertion post 62 is fixedly connected to the drive bar 72. The drive spring 71 is installed within the slide rail 6, with one end abutting against the side of the drive bar 72 facing away from the insertion post 62, and the other end abutting against the slide rail 6. When the insertion post 62 and the insertion slot 51 are aligned, the elastic force of the drive spring 71 pushes the drive bar 72, thereby driving the insertion post 62 to insert into the insertion slot 51.

[0039] See Figure 6 and Figure 7The slide rail 6 is equipped with a pushing component, which is a pushing column 8. The pushing column 8 slides through the slide rail 6 and is connected and fixed to the drive bar 72. One end of the pushing column 8 extends outside the bearing plate 1. The end of the pushing column 8 is provided with an arc surface structure, which can reduce the friction between the pushing column 8 and the ground and facilitate pushing. When the trolley needs to be moved, first fold the two side handles 3 downwards towards the support plate 1; then flip the support plate 1 to a vertical position. At this time, the arc-shaped structure of the push column 8 touches the ground surface. The weight of the support plate 1 causes the push column 8 to slide on the slide rail 6, so that the push column 8 drives the insertion column 62 to disengage from the insertion slot 51 through the drive bar 72. At this time, the support seat 5 enters a free sliding state; then slide the support seat 5 to the side wall of the support plate 1, and finally flip the support plate 1 so that the travel wheel 2 at the side wall position touches the ground. At this time, the drive spring 71 is released elastically, so that the insertion column 62 is inserted into the insertion slot 51. After that, the support plate 1 can be slid to transfer and place the trolley. The trolley occupies less space during the transfer, which greatly facilitates the transfer of the trolley.

[0040] The implementation principle of the foldable handcart in Embodiment 2 of this application is as follows: The travel wheels 2 are omnidirectional wheels, which improves the flexibility of the trolley. The support seat 5 can slide along the slide rail 6 and is fixed in position by the cooperation of the plug post 62 and the plug slot 51, which can reduce the space occupied by the trolley during transfer and facilitate the transfer of the trolley.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A foldable handcart, characterized in that: Including the support plate (1); There are multiple driving wheels (2), which are respectively located at the four corners of the bottom edge of the support plate (1); Handrails (3) are positioned opposite each other at the top two edges of the support plate (1); A hinge assembly (4) is disposed on the support plate (1), and the handrail (3) is hinged to the support plate (1) through the hinge assembly (4); The driving wheel (2) is a swivel wheel; The bottom of the support plate (1) is provided with a support seat (5), and one side of the support seat (5) is respectively provided on the side of the driving wheel (2) facing away from the support plate (1) and corresponding to each other; The bottom of the bearing plate (1) is provided with a slide rail (6) extending to the vertical side wall. The slide rail (6) has a sliding groove (63) for the bearing seat (5) to slide. The sliding groove (63) has a sliding groove (61) on each of the two opposite side walls. The support seat (5) is provided with sliding balls (52) that slide on the slide groove (61) and correspond to each other. The slide rail (6) is slidably connected to a plug-in post (62), and there are multiple plug-in posts (62) located at the bottom and side wall of the bearing plate (1); The side wall of the bearing seat (5) is provided with a plug groove (51) adapted to the plug post (62). The slide rail (6) is provided with a drive assembly (7). When the plug post (62) and the plug slot (51) are aligned with each other, the drive assembly (7) drives the plug post (62) to insert into the plug slot (51). The slide rail (6) is provided with a pusher. When the side wall of the bearing plate (1) abuts against the ground, the pusher pushes the plug post (62) to disengage from the plug groove (51).

2. The foldable handcart according to claim 1, characterized in that: The hinge assembly (4) includes a hinge shaft (41) and a limiting block (42). Mounting seats (11) are provided at the four corners of the top edge of the bearing plate (1). Mounting slots (111) are provided on the mounting seats (11). The hinge shaft (41) is rotatably connected to the mounting seats (11) and passes through the mounting slots (111). The end of the handrail (3) is connected to the hinge shaft (41). The handrail (3) flips and slides in the mounting slots (111). The limiting block (42) is disposed on the mounting base (11). When the handrail (3) is flipped upwards away from the bearing plate (1) to a vertical state, the handrail (3) abuts against the limiting block (42).

3. A foldable handcart according to claim 2, characterized in that: The handrail (3) is provided with an arc-shaped protrusion (411) at its end. The mounting base (11) is provided with a connecting seat (12) located on the bottom wall of the mounting groove (111). The connecting seat (12) has a slot (121). When the handrail (3) is flipped upward to a vertical position, the arc-shaped protrusion (411) slides into the slot (121).

4. A foldable handcart according to claim 1, characterized in that: The drive assembly (7) includes a drive spring (71) and a drive bar (72), the drive bar (72) being slidably connected to the slide rail (6), and the end of the plug post (62) being connected to the drive bar (72); The drive spring (71) is installed inside the slide rail (6). One end of the drive spring (71) abuts against the drive bar (72) on the side facing away from the plug post (62), and the other end abuts against the slide rail (6).

5. A foldable handcart according to claim 4, characterized in that: The pushing component is a pushing column (8), which slides through the slide rail (6). The pushing column (8) is connected and fixed to the driving bar (72), and one end of the pushing column (8) extends to the outside of the bearing plate (1).

6. A foldable handcart according to claim 5, characterized in that: The end of the push column (8) is provided with an arc surface structure.

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