Folding trolley

Abstract

The utility model discloses a folding trolley, relates to the technical field of trolley, including first bottom plate, second bottom plate, first roller and grip, through setting up the spacing subassembly, after folding, insert rod is inserted into fixed plate, first bottom plate and second bottom plate in proper order, then rotate the first knob to make first threaded rod with fixed plate threaded connection, and the first threaded rod with fixed plate threaded connection. The relative positions of the first bottom plate, the second bottom plate and the grip can be limited and fixed, the situation that the first bottom plate and the grip shake relative to the second bottom plate is avoided, a folding assembly is arranged, a hexagon nut is rotated to be separated from a second threaded rod, a rotating block and a first rolling wheel are rotated by 90 degrees after a rectangular rod is taken down, and then the first bottom plate and the grip are folded. According to the folding device, a first roller can be conveniently folded, the first roller can be prevented from shaking after a rectangular rod and a hexagon nut are re-installed, and a second roller is arranged and can conveniently push a grip to move a second bottom plate after the device is folded.

Description

Technical Field

[0001] The utility model relates to the technical field of trolleys, in particular to a foldable trolley. Background Art

[0002] A handcart is a transport vehicle that is pushed and pulled by manpower. It is an indispensable transport tool in production and life. It has the advantages of low cost, simple maintenance, easy operation, light weight, etc. It can work in places where motor vehicles are inconvenient to use. It is very convenient for transporting lighter items over short distances. When the handcart is not in use or needs to be transported, the foldable handcart can save more space and improve space utilization.

[0003] For example, a foldable trolley disclosed in the utility model with authorization announcement number CN219115501U is provided with a supporting device. After the left bottom plate and the right bottom plate are opened, the left slide bar and the right slide bar are inserted into the groove of the fixing seat to limit and fix the left bottom plate and the right bottom plate. By providing a limiting device, the left bottom plate and the right bottom plate can be folded by sliding the left slide bar and the right slide bar inward, the roller can be folded by rotating the rotating block, and the left slide bar can be fixed and limited by rotating the fixing bolt so that the fixing bolt is threadedly connected to the thread groove.

[0004] This prior art also has the following problems when used:

[0005] After the left and right bottom plates of the device are folded, the left bottom plate is easily shaken due to the influence of the external environment. A handle for convenient movement of the device is installed on the side of the right bottom plate of the device away from the left bottom plate. The handle is easily shaken due to the influence of the external environment after the device is folded. After the device rotates the rotating block to fold the roller, the rotating block is easily shaken due to the influence of the external environment. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a foldable trolley to solve the technical problems mentioned in the above background.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a foldable trolley, comprising a first bottom plate, a second bottom plate, a first roller and a handle, wherein the second bottom plate is hingedly connected to the side of the first bottom plate, symmetrical first rollers are installed below the first bottom plate and the second bottom plate, and a handle is installed on the side of the second bottom plate away from the first bottom plate;

[0008] A limiting component, which is arranged below the handle and can limit and fix the relative positions of the first bottom plate, the second bottom plate and the handle after folding;

[0009] A folding component, which is arranged above the first roller and can improve the limiting effect of the first roller after folding;

[0010] The second roller is installed under the second bottom plate, and the second roller can facilitate the handle to move the second bottom plate after folding.

[0011] As a preferred technical solution of the utility model, a symmetrical connecting rod is hinged on one side of the second base plate away from the first base plate, the other end of the connecting rod is fixedly connected to the handle, and the first roller and the second roller are rotatably connected with rotating blocks on both the front and rear sides.

[0012] As a preferred technical solution of the utility model, the limit assembly includes a fixed plate, a first knob, an insertion rod, a first socket, a second socket and a third socket, a first knob is arranged at the center of the inner side of the connecting rod, a first threaded rod is fixedly arranged on the side of the first knob, an insertion rod is fixedly arranged on the other end of the first threaded rod, a fixed plate is threadedly connected to the outer side of the first threaded rod, the top surfaces of the first bottom plate and the second bottom plate are respectively provided with a first socket and a second socket penetrating to the bottom surface, and a third socket is arranged on the side of the second bottom plate.

[0013] As a preferred technical solution of the utility model, the front and rear sides of the fixing plate are respectively fixedly connected to the inner side of the connecting rod, and the insertion rod is respectively adapted to the first insertion hole, the second insertion hole and the third insertion hole.

[0014] As a preferred technical solution of the utility model, the folding component includes a fixed block, a second knob, a rectangular rod, a second threaded rod and a hexagonal nut. A rectangular rod is arranged inside the rotating block, and the second threaded rod and the second knob are fixedly arranged on the left and right sides of the rectangular rod respectively. A symmetrical fixed block is arranged outside the rectangular rod, and a hexagonal nut is arranged outside the second threaded rod.

[0015] As a preferred technical solution of the utility model, the top surface of the fixed block is fixedly connected to the bottom surfaces of the first bottom plate and the second bottom plate respectively, and the first rectangular groove and the second rectangular groove adapted to the rectangular rod are respectively provided inside the rotating block and the fixed block, the rectangular rod is slidingly connected to the rotating block through the first rectangular groove, the rectangular rod is slidingly connected to the fixed block through the second rectangular groove, and the second threaded rod is threadedly connected to the hexagonal nut.

[0016] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0017] The utility model provides a limiting component, and after folding, the insertion rod is inserted into the fixed plate, the first base plate and the second base plate in sequence, and then the first knob is rotated to make the first threaded rod and the fixed plate threadedly connected, so that the relative positions of the first base plate, the second base plate and the handle can be limited and fixed to prevent the first base plate and the handle from shaking relative to the second base plate. By providing a folding component, the hexagonal nut is rotated to disengage the hexagonal nut from the second threaded rod, and the rectangular rod is removed to rotate the rotating block and the first roller ninety degrees, so that the first roller can be easily folded, and the first roller can be prevented from shaking after the rectangular rod and the hexagonal nut are reinstalled. By providing the second roller, the second roller can be conveniently pushed to move the second base plate after the device is folded. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model before folding;

[0019] Figure 2 This is a static schematic diagram of the main structure of the utility model after folding;

[0020] Figure 3 This is a schematic diagram of the split structure of the folding assembly of the utility model;

[0021] Figure 4 This is a schematic diagram of the movement of the main structure of the utility model after folding;

[0022] Among them: 1. first base plate; 2. second base plate; 3. connecting rod; 4. rotating block; 5. first roller; 6. fixed plate; 7. first knob; 8. plug-in rod; 9. first plug-in hole; 10. second plug-in hole; 11. third plug-in hole; 12. handle; 13. fixing block; 14. second knob; 15. rectangular rod; 16. second threaded rod; 17. hexagonal nut; 18. second roller. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0024] Example

[0025] Please refer to Figure 1-Figure 4As shown, the utility model provides a foldable trolley, including a first bottom plate 1, a second bottom plate 2, a first roller 5 and a handle 12. The second bottom plate 2 is hinged on the side of the first bottom plate 1, and an electromagnet and an iron block are respectively installed on the side where the first bottom plate 1 and the second bottom plate 2 are close to each other. The first bottom plate 1 and the second bottom plate 2 can be connected by turning on the electromagnet to absorb the iron block. Symmetrical first rollers 5 are installed under the first bottom plate 1 and the second bottom plate 2, and the front and rear sides of the first rollers 5 are rotatably connected to rotating blocks 4. A symmetrical connecting rod 3 is hinged on the side of the second bottom plate 2 away from the first bottom plate 1, and a handle 12 is fixedly provided on the other end of the connecting rod 3. Pushing the handle 12 to cooperate with the first roller 5 can drive the first bottom plate 1 and the second bottom plate 2 to move.

[0026] like Figure 1-Figure 4 As shown, a limit assembly is provided below the handle 12, and the limit assembly consists of a fixing plate 6, a first knob 7, an insertion rod 8, a first socket 9, a second socket 10 and a third socket 11. A first knob 7 is provided at the center of the inner side of the connecting rod 3, a first threaded rod is fixedly provided on the side of the first knob 7, and an insertion rod 8 is fixedly provided on the other end of the first threaded rod. The outer side of the first threaded rod is threadedly connected to the fixing plate 6, and a threaded hole adapted to the first threaded rod is penetrated through the side of the fixing plate 6. The front and rear sides of the fixing plate 6 are respectively fixedly connected to the inner side of the connecting rod 3, and the top surfaces of the first bottom plate 1 and the second bottom plate 2 are respectively provided with a first socket 9 and a second socket 10 penetrating to the bottom surface, and the side of the second bottom plate 2 is provided with a third socket 11, and the insertion rod 8 is respectively adapted to the first socket 9, the second socket 10 and the third socket 11. When the device is in use, the first threaded rod is threadedly connected to the fixing plate 6 and the insertion rod 8 extends into the second bottom plate 2 through the third socket 11. At this time, the insertion rod 8 cooperates with the first threaded rod to prevent the connecting rod 3 from being relative to the second bottom plate 2 When the first bottom plate 1 and the second bottom plate 2 are folded, the first knob 7 is turned to drive the first knob 7 to move outward, and the movement of the first knob 7 drives the first threaded rod and the insertion rod 8 to move outward until the insertion rod 8 is separated from the second bottom plate 2, the insertion rod 8 is pulled out and the electromagnet is turned off, and the first bottom plate 1 is rotated 180 degrees to fold the first bottom plate 1 and the second bottom plate 2, and the connecting rod 3 is rotated 90 degrees to rotate the handle 12 to the top of the second bottom plate 2. At this time, the threaded hole of the fixing plate 6 is just aligned with the first insertion hole 9 and the second insertion hole 10. After the folding is completed, the insertion rod 8 is inserted into the fixing plate 6, the first bottom plate 1 and the second bottom plate 2 along the threaded hole, the first insertion hole 9 and the second insertion hole 10 in turn, and the first knob 7 is turned to make the first threaded rod be threadedly connected to the fixing plate 6, so that the relative positions of the first bottom plate 1, the second bottom plate 2 and the handle 12 can be limited and fixed to prevent the first bottom plate 1 and the handle 12 from shaking relative to the second bottom plate 2.

[0027] like Figure 1-Figure 4As shown, a folding assembly is arranged above the first roller 5, and the folding assembly consists of a fixed block 13, a second knob 14, a rectangular rod 15, a second threaded rod 16 and a hexagonal nut 17. A rectangular rod 15 is arranged inside the rotating block 4, and the cross-sectional shape of the rectangular rod 15 is square. The rotating block 4 is provided with a first rectangular groove adapted to the rectangular rod 15, and the rectangular rod 15 is slidably connected to the rotating block 4 through the first rectangular groove. The left and right sides of the rectangular rod 15 are respectively fixed with the second threaded rod 16 and the second knob 14. A symmetrical fixed block 13 is arranged outside the rectangular rod 15, and a second rectangular groove adapted to the rectangular rod 15 is arranged inside the fixed block 13. The rectangular rod 15 is slidably connected to the fixed block 13 through the second rectangular groove. The top surface of the fixed block 13 is respectively fixedly connected to the bottom surfaces of the first bottom plate 1 and the second bottom plate 2. The second threaded rod 16 A hexagonal nut 17 is provided through the outer side, and the second threaded rod 16 is threadedly connected to the hexagonal nut 17, and the hexagonal nut 17 is tightly against the fixed block 13. When the first roller 5 needs to be folded, the hexagonal nut 17 is rotated to disengage the hexagonal nut 17 from the second threaded rod 16, and the rectangular rod 15 is pulled out by the second knob 14. The rotating block 4 and the first roller 5 are rotated ninety degrees along the central axis of the second rectangular groove, which can facilitate the folding of the first roller 5 and further reduce the space occupied by the device. At this time, the first rectangular groove is realigned to the second rectangular groove, and the rectangular rod 15 is passed through the first rectangular groove and the second rectangular groove. The hexagonal nut 17 is rotated to make the hexagonal nut 17 threadedly connected to the second threaded rod 16 and tightly against the fixed block 13, and the rectangular rod 15 and the hexagonal nut 17 are reinstalled to prevent the first roller 5 from shaking after folding.

[0028] like Figure 1-Figure 4 As shown, a second roller 18 is installed under the second base plate 2, and the second roller 18 is rotatably connected to a rotating block 4 on both the front and rear sides, and a folding component is installed between the second roller 18 and the second base plate 2. After the device is folded, the second roller 18 and the first roller 5 under the second base plate 2 are released from the folded state, and the handle 12 is pushed to cooperate with the second roller 18 and the first roller 5 under the second base plate 2 to move the second base plate 2, so as to facilitate the folded device to be moved to a specified position.

[0029] Specific working principle:

[0030] When the device is in use, the electromagnet is turned on to attract the iron block to connect the first base plate 1 and the second base plate 2, the first threaded rod is threadedly connected to the fixed plate 6 and the insertion rod 8 extends into the second base plate 2 through the third insertion hole 11. At this time, the insertion rod 8 cooperates with the first threaded rod to prevent the connecting rod 3 from rotating relative to the second base plate 2, thereby facilitating the pushing of the handle 12 to move the first base plate 1 and the second base plate 2.

[0031] When the device needs to fold the first base plate 1 and the second base plate 2, the first knob 7 is rotated to drive the first knob 7 to move outward, and the movement of the first knob 7 drives the first threaded rod and the insertion rod 8 to move outward until the insertion rod 8 is separated from the second base plate 2, the insertion rod 8 is pulled out and the electromagnet is turned off, the first base plate 1 is rotated 180 degrees to fold the first base plate 1 and the second base plate 2, the connecting rod 3 is rotated 90 degrees to rotate the handle 12 to the top of the second base plate 2, at this time, the threaded hole of the fixing plate 6 is just aligned with the first insertion hole 9 and the second insertion hole 10, after the folding is completed, the insertion rod 8 is inserted into the fixing plate 6, the first base plate 1 and the second base plate 2 along the threaded hole, the first insertion hole 9 and the second insertion hole 10 in turn, and the first knob 7 is rotated again to make the first threaded rod threadably connected to the fixing plate 6, so that the first base plate 1 and the second base plate 2 can be folded. The relative position of the first base plate 1 and the handle 12 is limited and fixed to prevent the first base plate 1 and the handle 12 from shaking relative to the second base plate 2, the hexagonal nut 17 is turned to disengage the hexagonal nut 17 from the second threaded rod 16, and the rectangular rod 15 is pulled out through the second knob 14, and the rotating block 4, the first roller 5 and the second roller 18 are rotated ninety degrees along the central axis of the second rectangular groove, which can facilitate the folding of the first roller 5 and the second roller 18. At this time, the first rectangular groove is realigned to the second rectangular groove, the rectangular rod 15 is passed through the first rectangular groove and the second rectangular groove, the hexagonal nut 17 is turned to make the hexagonal nut 17 threadedly connected to the second threaded rod 16 and close to the fixing block 13, and the rectangular rod 15 and the hexagonal nut 17 are reinstalled to prevent the first roller 5 and the second roller 18 from shaking after folding.

[0032] When the device needs to be moved after being folded, the second roller 18 and the first roller 5 under the second base plate 2 are released from the folded state, and the handle 12 is pushed to cooperate with the second roller 18 and the first roller 5 under the second base plate 2 to move the second base plate 2, thereby facilitating the movement of the folded device to a designated position.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A foldable trolley, comprising a first bottom plate (1), a second bottom plate (2), a first roller (5) and a handle (12), wherein the first bottom plate (1) is hingedly connected to the second bottom plate (2) at its side, symmetrical first rollers (5) are installed below the first bottom plate (1) and the second bottom plate (2), and a handle (12) is installed on a side of the second bottom plate (2) away from the first bottom plate (1), characterized in that: A limiting component, the limiting component is arranged below the handle (12), and the limiting component can limit and fix the relative positions of the first bottom plate (1), the second bottom plate (2) and the handle (12) after folding; A folding assembly, the folding assembly being arranged above the first roller (5), and the folding assembly being able to improve the limiting effect on the first roller (5) after folding; A second roller (18), wherein the second roller (18) is installed below the second bottom plate (2), and the second roller (18) can conveniently push the handle (12) to move the second bottom plate (2) after folding.

2. A foldable trolley according to claim 1, characterized in that: A symmetrical connecting rod (3) is hingedly connected to one side of the second bottom plate (2) away from the first bottom plate (1); the other end of the connecting rod (3) is fixedly connected to the handle (12); and the first roller (5) and the second roller (18) are rotatably connected to rotating blocks (4) at both the front and rear sides.

3. A foldable trolley according to claim 2, characterized in that: The limiting assembly comprises a fixing plate (6), a first knob (7), an insert rod (8), a first plug hole (9), a second plug hole (10) and a third plug hole (11); the first knob (7) is arranged at the center of the inner side of the connecting rod (3); a first threaded rod is fixedly arranged on the side of the first knob (7); the insert rod (8) is fixedly arranged on the other end of the first threaded rod; the fixing plate (6) is threadedly connected to the outer side of the first threaded rod; the first bottom plate (1) and the second bottom plate (2) are respectively arranged on the top surfaces thereof to penetrate to the bottom surfaces thereof; the third plug hole (11) is arranged on the side of the second bottom plate (2).

4. A foldable trolley according to claim 3, characterized in that: The front and rear sides of the fixing plate (6) are respectively fixedly connected to the inner side of the connecting rod (3), and the insertion rod (8) is respectively matched with the first insertion hole (9), the second insertion hole (10) and the third insertion hole (11).

5. A foldable trolley according to claim 2, characterized in that: The folding assembly comprises a fixed block (13), a second knob (14), a rectangular rod (15), a second threaded rod (16) and a hexagonal nut (17); the rectangular rod (15) is arranged inside the rotating block (4); the second threaded rod (16) and the second knob (14) are fixedly arranged on the left and right sides of the rectangular rod (15); a symmetrical fixed block (13) is arranged outside the rectangular rod (15); and the hexagonal nut (17) is arranged outside the second threaded rod (16).

6. A foldable trolley according to claim 5, characterized in that: The top surface of the fixed block (13) is fixedly connected to the bottom surfaces of the first bottom plate (1) and the second bottom plate (2), respectively; the inside of the rotating block (4) and the fixed block (13) are respectively provided with a first rectangular groove and a second rectangular groove adapted to the rectangular rod (15); the rectangular rod (15) is slidably connected to the rotating block (4) through the first rectangular groove; the rectangular rod (15) is slidably connected to the fixed block (13) through the second rectangular groove; and the second threaded rod (16) is threadedly connected to the hexagonal nut (17).

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