Trolley

Abstract

A cart is characterized in that a horizontal main table plate is arranged at the top of a frame, at least one foldable expansion table plate is connected to the side face of the frame, the expansion table plate is connected to the frame through at least two supporting assemblies, each supporting assembly comprises a supporting piece and a rotating piece, the supporting pieces are fixed to the side face of the frame, and the rotating pieces are fixed to the side face of the frame. The top face of the supporting piece is fixed to the bottom face of the expansion table board, the rotating piece is provided with an upper pivot joint groove and a lower pivot joint groove, the outer end of the lower pivot joint groove is open, and the rotating piece and the supporting piece are in pivot joint through an upper pivot and a lower pivot. The upper pivot and the lower pivot are respectively positioned at the tops of the upper pivoting groove and the lower pivoting groove when the expansion table plate is horizontally unfolded; the lower pivot is separated from the lower pivoting groove when the rotating piece moves upwards, the rotating piece continues to move upwards until the upper pivot is located at the bottom of the upper pivoting groove, and the rotating piece rotates with the upper pivot as the center to drive the expanding table board to move upwards and then turn over downwards. The expansion table plate can be flexibly added on the cart according to use requirements, and the cart is simple in structure and convenient to use.

Description

Technical Field

[0001] This utility model relates to a mobile trolley, specifically a trolley. Background Technology

[0002] Pushcarts are convenient for short-distance transport of goods. They can be moved by pushing the handle and also function as mobile vending machines. They can be parked in leisure squares, pedestrian streets, stations, docks, campuses, celebration sites, stadiums, tourist attractions, and even in rural towns and villages. With continuous social development and improved lifestyles, people's love for food is also increasing. Pushcarts offer a variety of food options; for example, barbecue has become incredibly popular across the country in recent years, enjoying widespread consumer appeal. Barbecue carts not only provide delicious food for consumers but also generate income for vendors.

[0003] For vending carts that require cooked food, such as barbecue carts, they generally consist of a frame with a table on top for carrying materials. The main body of the frame is designed as a cabinet to store gas pipes or other items. The bottom of the frame has wheels for easy movement, and a handle is located on one side. These carts can carry food and tableware at once, reducing the workload for staff. However, if the table needs to hold more products or items for handling, the table area needs to be increased, increasing the overall size of the frame and requiring more storage space, making transportation and storage inconvenient. Some carts now use foldable extendable tables as movable tables. However, these extendable tables require support components to switch between horizontal support and folded-down positions. These support components typically include hinged support rods (or hinge plates) with elastic elements, or locking mechanisms, etc. The complex structure of the support components and the extended table section increases the material and assembly costs of the cart. Utility Model Content

[0004] The purpose of this utility model is to provide a trolley that can flexibly add an extension table to the tabletop according to usage needs, and has a simple structure and is easy to use.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A trolley includes a frame with a horizontal main table on top and at least one extendable table attached to the side of the frame. The extendable tables are connected to the frame via at least two sets of support components. Each support component includes a support member and a rotating member. The support member is fixed to the side of the frame, and its top surface is fixed to the bottom surface of the extendable table. The rotating member is located close to the outside of the support member. The rotating member has an upper pivot groove and a lower pivot groove, which are elongated and parallel to each other. The lower pivot groove is open at its outer end. The rotating member and the support member are pivotally connected via an upper pivot and a lower pivot. When the extendable table is horizontally unfolded, the upper pivot and the lower pivot are located at the top of the upper pivot groove and the lower pivot groove, respectively. The rotating member rests against and is supported on the support member. When the rotating member moves upward, the lower pivot disengages from the lower pivot groove. After the rotating member continues to move upward until the upper pivot is at the bottom of the upper pivot groove, the rotating member rotates around the upper pivot, causing the extendable table to move upward and then flip downward to fold against the side of the frame.

[0007] Furthermore, when the extended table is unfolded, the upper pivot groove and the lower pivot groove are vertically parallel to each other in the height direction of the frame. The upper pivot groove is located closer to the frame, and the lower pivot groove is parallel to the outside of the upper pivot groove and extends downward from near the bottom of the upper pivot groove. The length of the upper pivot groove is greater than the length of the lower pivot groove. When the rotating part rotates, the upper pivot groove and the lower pivot groove change from a vertical state to a horizontal state.

[0008] Furthermore, the rotating component includes a first side plate and a first top plate. The top of the support component forms a second top plate that can support the first top plate of the rotating component. When the rotating component horizontally supports the extended table, a rotating part is formed by protruding downward on the side of the first side plate facing the frame. The rotating part forms a corner in the first side plate. An upper pivot groove and a lower pivot groove are provided on the rotating part, and the lower end of the lower pivot groove is open. When the first side plate rotates, the bottom of the rotating part is raised above the lower pivot and then rotates towards the frame. The rotated rotating part is inserted into the gap area between the upper pivot and the lower pivot for positioning. The lower pivot abuts against the corner of the rotating part.

[0009] Furthermore, the rotating member includes a first top piece formed on the upper end of the first side piece, and the bottom surface of the extended table is fixed on the first top piece. The supporting member includes a second top piece formed on the upper end of the second side piece. The second side piece also has a side connecting piece vertically provided on the side facing the frame, and the side connecting piece is fixed on the side of the frame. When the rotating member horizontally supports the extended table, the first side piece is located outside the second side piece, and the first top piece is supported above the second top piece. The width of the first side piece is greater than the width of the second side piece.

[0010] Furthermore, the second top plate is secured to the bottom surface of the extension table by at least two bolts passing through it from bottom to top, and the second top plate has at least one clearance notch through which the bolts can pass.

[0011] Furthermore, the first side piece is formed into an L-shaped piece. In the first side piece, a notch is formed on the side away from the frame. The rotating part is positioned relative to the notch. A corner is formed on the inner side of the notch. A support part is formed at the corner for the lower pivot to abut against.

[0012] Furthermore, the extended tabletop is equipped with two sets of support components, which are symmetrical and parallel in a horizontal position, and the rotating parts between the two sets of support components move synchronously.

[0013] Furthermore, the support is fixed to the side of the frame and is located below the main table. When the extended table is unfolded, it extends horizontally to one side of the main table, and when the extended table is folded up, it folds down against the side of the frame.

[0014] Furthermore, a trolley handle is provided on the side of the frame that does not have an extension table, and at least one pair of rollers are installed at the bottom of the frame, with the trolley handle corresponding to the forward direction of the rollers.

[0015] Furthermore, the frame has at least one cabinet in the middle, the top of the cabinet forms a shelf, the main table is mounted on the shelf, and the side of the cabinet has a shelf.

[0016] With the above structure, the trolley of this utility model can be flexibly extended with an extended tabletop during use, according to usage needs, to increase the tabletop area. When the tabletop is not needed or when packing up, the extended tabletop can be folded up without affecting the trolley's volume and storage space. Moreover, the folding structure of the extended tabletop is simple, easy and quick to operate, and can reduce material and installation costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 (The extended table unfolds);

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 (The extended table unfolds);

[0019] Figure 3 This is a structural diagram of the extended table and support components after disassembly in this utility model;

[0020] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0021] Figure 5 for Figure 3 A magnified view of a section at point B in the middle;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 (Extend tabletop folds up);

[0023] Figure 7 This is a schematic diagram of the folding action of the extended tabletop in this utility model.

[0024] Label Explanation:

[0025] 1. Frame; 11. Handlebar; 12. Casters; 13. Cabinet;

[0026] 14 Shelves; 15 Storage racks; 2 Main tabletop; 3 Extendable tabletop;

[0027] 4 Supporting component; 41 Second top piece; 411 Avoidance notch; 42 Second side piece;

[0028] 43 Side connecting piece; 5 Rotating component; 51 Upper pivot groove; 52 Lower pivot groove;

[0029] 53 First side piece; 54 First top piece; 55 Rotating part; 56 Corner;

[0030] 61 Upper pivot; 62 Lower pivot. Detailed Implementation

[0031] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0032] like Figure 1 , Figure 2 As shown, this utility model discloses a trolley, which includes a frame 1. The top of the frame 1 has a horizontal main table 2. At least one extendable table 3 is connected to the side of the frame 1. In this embodiment, only one extendable table 3 is connected. When needed, it can be directly unfolded to increase the length of the trolley table and increase the usable area. A trolley handle 11 is provided on the side of the frame 1 where the extendable table 3 is not located. At least one pair of rollers 12 are installed at the bottom of the frame 1. In this embodiment, only one pair of rollers 12 is provided, and the trolley handle 11 corresponds to the forward direction of the rollers 12. Of course, two sets of rollers can also be provided. The rollers can also be universal wheels, and one pair of universal wheels is equipped with a locking device to control the universal wheels to stop rotation. At least one cabinet 13 is also provided in the middle of the frame 1. The cabinet 13 can hold gas cylinders or other items. One side of the cabinet 13 can also be designed as an opening and closing door according to usage requirements. A shelf 14 can also be formed on the top of the cabinet 13, with the main table 2 mounted on top of the shelf 14. A shelf 15 can also be provided on the side of the cabinet 13, which can hold items such as condiment bottles, increasing its functionality.

[0033] Regarding the structure and use of the extended tabletop 3, combined with Figures 1 to 7As shown in the figure, in this utility model, the extendable table 3 is connected to the frame through at least two sets of support components. Each support component includes a support member 4 and a rotating member 5. The support member 4 is fixed to the side of the frame 1, and its top surface is fixed to the bottom surface of the extendable table 3. The rotating member 5 is located close to the outside of the support member 4, and can be used to extend the table 3 horizontally to one side of the main table 2 or fold it downwards to the side of the frame 1. Figure 4 , Figure 5 As shown, the rotating component 5 has an upper pivot groove 51 and a lower pivot groove 52, which are elongated and parallel to each other. The lower pivot groove 52 is open at its outer end. The rotating component 5 and the support component 4 are pivotally connected via an upper pivot 61 and a lower pivot 62. The upper pivot 61 and the lower pivot 62 are fixed to the support component 4. The upper pivot 61 can be fixed by a bolt passing through the upper pivot groove 51 and the upper pivot hole (not shown in the figure) on the support component 4, and then by a nut. The upper pivot 61 is limited in the upper pivot groove 51. The lower pivot 62 can also be fixed by a nut passing through the lower pivot hole (not shown in the figure) on the support component 4. The lower pivot 62 is inserted into the lower pivot groove 52 when the extension table 3 is unfolded. Figure 1 , Figure 6 and Figure 7 As shown, when the extended table 3 is horizontally unfolded, the upper pivot 61 and the lower pivot 62 are located at the top of the upper pivot groove 51 and the lower pivot groove 52, respectively. At this time, the rotating member 5 abuts against and is supported on the support member 4. When the rotating member 5 moves upward, the lower pivot 62 disengages from the lower pivot groove 52. After the rotating member 5 continues to move upward until the upper pivot 62 is located at the bottom of the upper pivot groove 51, the rotating member 5 can rotate around the upper pivot 61, thereby driving the extended table 3 to move upward and then flip downward to be folded against the side of the frame 1.

[0034] Specifically, such as Figure 1 or Figure 4 as well as Figure 7 As shown, the upper pivot groove 51 and the lower pivot groove 52 are vertically parallel to each other in the height direction of the frame 1 when the extension table 3 is unfolded. The upper pivot groove 51 is located in the direction close to the frame 1 and is located inside the lower pivot groove 52. The lower pivot groove 52 is located parallel to the outside of the upper pivot groove 51. From a horizontal perspective, the lower pivot groove 52 extends downward from the near bottom end of the upper pivot groove 51, and the length of the upper pivot groove 51 is greater than the length of the lower pivot groove 52. The upper pivot groove 51 and the lower pivot groove 52 change from a vertical state to a horizontal state when the rotating part 5 rotates.

[0035] Combination Figure 4 , Figure 5As shown, the rotating component 5 includes a first side plate 53 and a first top plate 54. The first side plate 53 forms an L-shaped piece. The top of the support member 4 forms a second top plate 41 that can support the first top plate 54 of the rotating component. When the rotating component 5 horizontally supports the extended table 3, a rotating part 55 is formed protruding downward from the side of the first side plate 53 facing the frame 1. The rotating part 55 forms a tongue on one side of the rotating component 5, and the rotating part 55 forms a corner 56 in the first side plate 53. An upper pivot groove 51 and a lower pivot groove 52 are provided on the rotating part 55, and the lower end of the lower pivot groove 52 is open. Figure 7 When the first side panel 53 rotates, the bottom of the rotating part 55 is raised above the lower pivot 62 and rotates towards the frame 1. After rotation, the rotating part 55 is inserted into the gap area between the upper pivot 61 and the lower pivot 62 for positioning, so that the rotating part 55 remains in a folded and limited state after flipping. The lower pivot 62 can finally abut against the corner 56 of the rotating part 55, and the lower pivot groove 52 is located between the upper pivot 61 and the lower pivot 62. The distance between the upper pivot 61 and the lower pivot 62 is sufficient to allow the rotating part 55 to tilt and insert or move out (in the gap area between the upper pivot 61 and the lower pivot 62) when rotating around the upper pivot, so that the rotating part 5 can smoothly complete the operation when driving the extension table 3 to fold downward and flip upward for support.

[0036] In this embodiment, the rotating member 5 includes a first top plate 54 formed on the upper end of the first side plate 53. The bottom surface 3 of the extension table 3 is fixed to the first top plate 54, and one side of the bottom surface of the extension table can be fixed to the first fixed plate 54 by bolts and nuts. The supporting member 4 includes a second top plate 41 formed on the upper end of the second side plate 42. The second side plate 42 also has a side connecting piece 43 vertically provided on the side facing the frame, and the side connecting piece 43 is fixed to the side of the frame 1. When the rotating member 5 horizontally supports the extension table 3, the first side plate 53 is located outside the second side plate 42, and the first top plate 54 is supported above the second top plate 41. The width of the first side plate 53 is greater than the width of the second side plate 42 to allow the first side plate 53 to rotate outside the second side plate 42. The second top plate 41 can be fixed to the bottom surface of the extension table 3 by at least two bolts passing through from bottom to top. In this embodiment, one bolt is located on the outside of the second top plate 41, and the other bolt needs to pass through the second top plate 41. Therefore, the second top plate 41, which is supported at the bottom of the first top plate 54, is provided with at least one clearance notch 411 for the bolt to pass through. In the first side plate 53, a notch is formed on the side away from the frame. The rotating part 55 is arranged opposite the notch. A corner 56 is formed on the inner side of the notch. A stop portion is formed at the corner 56 for the lower pivot 62 to abut against, so that the rotating part 55 can better maintain its limited position. Figure 7 As shown, the abutment can be formed by creating a slope at corner 56 (e.g.) Figure 7 In the last view, when corner 56 moves to lower pivot 62, the ramp can be stopped and positioned at lower pivot 62 and corner 56 is appropriately raised.

[0037] In this embodiment, the extendable table 3 is equipped with two sets of support components. The two sets of support components are symmetrical and parallel in a horizontal position. The rotating parts 5 between the two sets of support components move synchronously. When extending or retracting the extendable table 3, simply lift both sides of the extendable table 3. Figure 3 As shown, the support member 4 is fixed to the side of the frame 1, and the support member 4 is located below the main table 2. When unfolded, the extension table 3 can extend horizontally to one side of the main table (e.g., Figure 1 As shown), when the extended table is folded up, it folds down against the side of the frame 1 (as shown). Figure 6 (As shown).

[0038] Combination Figure 1 , Figure 6 as well as Figure 7 As shown, when the trolley of this utility model needs to expand the usable area of ​​the table, since the extended table 3 is fixed on the rotating part 5, the extended table 3, which is attached to the side of the frame 1, is flipped upward, and the rotating part 5 is rotated counterclockwise. After the rotating part 55 rotates, it can move out from the gap between the upper pivot 61 and the lower pivot 62. Then, the extended table is flipped to a horizontal state (at this time, the upper pivot groove 51 and the lower pivot groove 52 correspond to the upper ends of the upper pivot 61 and the lower pivot and are located on the same axis). The extended table 3, together with the rotating part, is inserted vertically downward until the lower pivot 62 is inserted into the lower pivot groove 52, and the upper pivot 61 and the lower pivot 62 abut against the top of the upper pivot groove 51 and the lower pivot groove 52 respectively. The rotating part 5 abuts against and supports the support part 4. The extended table 3 is horizontally supported on one side of the main table 2 to form an outwardly expanding table, increasing the usable area of ​​the trolley table. Conversely, to fold up the extended table, first pull the extended table 3 upwards, the rotating part 5 moves upwards, and the upper pivot groove 51 and the lower pivot groove 52 move upwards relative to the support part 4. At this time, the lower pivot 62 disengages from the lower pivot groove 52 when the rotating part 5 moves upwards. After the rotating part 5 continues to move upwards until the upper pivot 62 is at the bottom of the upper pivot groove 51, the rotating part 5 can rotate with the upper pivot 61 as the center, thereby driving the extended table 3 to move upwards and then flip downwards until the extended table 3 is folded against the side of the frame 1, and the extended table 3 is stored on one side of the frame.

[0039] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A trolley comprising a frame, the top of which has a horizontal main table, characterized in that: At least one retractable extension table is connected to the side of the frame. The extension table is connected to the frame by at least two sets of support components. Each support component includes a support member and a rotating member. The support member is fixed to the side of the frame, and its top surface is fixed to the bottom surface of the extension table. The rotating member is located close to the outside of the support member. The rotating member has an upper pivot groove and a lower pivot groove that are elongated and parallel to each other. The lower pivot groove is open at its outer end. The rotating member and the support member are pivotally connected by an upper pivot and a lower pivot. When the extension table is horizontally unfolded, the upper pivot and the lower pivot are located at the top of the upper pivot groove and the lower pivot groove, respectively. The rotating member rests against and is supported on the support member. When the rotating member moves upward, the lower pivot disengages from the lower pivot groove. After the rotating member continues to move upward until the upper pivot is at the bottom of the upper pivot groove, the rotating member rotates around the upper pivot, causing the extension table to move upward and then flip downward to retract to the side of the frame.

2. The stroller as described in claim 1, characterized in that: When the extended table is unfolded, the upper pivot groove and the lower pivot groove are vertically parallel to each other in the height direction of the frame. The upper pivot groove is located closer to the frame, and the lower pivot groove is parallel to the outside of the upper pivot groove and extends downward from near the bottom of the upper pivot groove. The length of the upper pivot groove is greater than the length of the lower pivot groove. When the rotating part rotates, the upper pivot groove and the lower pivot groove change from a vertical state to a horizontal state.

3. A trolley as described in claim 1, characterized in that: The rotating component includes a first side plate and a first top plate. The top of the support component forms a second top plate that can support the first top plate of the rotating component. When the rotating component horizontally supports the extended table, a rotating part is formed by protruding downward on the side of the first side plate facing the frame. The rotating part forms a corner in the first side plate. An upper pivot groove and a lower pivot groove are provided on the rotating part. The lower end of the lower pivot groove is open. When the first side plate rotates, the bottom of the rotating part is raised above the lower pivot and rotates towards the frame. The rotated rotating part is inserted into the gap area between the upper pivot and the lower pivot for positioning. The lower pivot abuts against the corner of the rotating part.

4. A trolley as described in claim 3, characterized in that: The rotating member includes a first top piece formed on the upper end of the first side piece, and the bottom surface of the extended table is fixed on the first top piece. The supporting member includes a second top piece formed on the upper end of the second side piece. The second side piece also has a side connecting piece vertically provided on the side facing the frame, and the side connecting piece is fixed on the side of the frame. When the rotating member horizontally supports the extended table, the first side piece is located outside the second side piece, and the first top piece is supported above the second top piece. The width of the first side piece is greater than the width of the second side piece.

5. A trolley as described in claim 4, characterized in that: The second top plate is secured to the bottom surface of the extension table by at least two bolts passing through it from bottom to top, and the second top plate has at least one clearance notch through which the bolts can pass.

6. A trolley as described in claim 4, characterized in that: The first side piece forms an L-shaped piece. In the first side piece, a notch is formed on the side away from the frame. The rotating part is set opposite to the notch. A corner is formed on the inner side of the notch. A support part is formed at the corner for the lower pivot to abut against.

7. A trolley as described in any one of claims 1 to 6, characterized in that: The extended table is equipped with two sets of support components. The two sets of support components are symmetrical and parallel in a horizontal position, and the rotating parts between the two sets of support components move synchronously.

8. A trolley as described in any one of claims 1 to 6, characterized in that: The support is fixed to the side of the frame and is located below the main table. When the extended table is unfolded, it extends horizontally to one side of the main table. When the extended table is folded up, it folds down against the side of the frame.

9. A trolley as described in claim 1, characterized in that: The frame has a push handle on the side without an extendable table, and at least one pair of wheels are installed at the bottom of the frame, with the push handle corresponding to the forward direction of the wheels.

10. A trolley as described in claim 1, characterized in that: The frame has at least one cabinet in the middle, the top of the cabinet forms a shelf, the main table is placed on the shelf, and the side of the cabinet has a shelf.

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