A dining car with folding expansion structure
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI BAOJU MASCH CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-19
Smart Images
Figure CN224369347U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of food cart structure technology, and in particular to a food cart with a folding and expandable structure. Background Technology
[0002] Hand-pushed food carts are widely used as an important means of transportation in many fields such as catering services and event logistics. They typically adopt a double-layer structure design, consisting of a base plate and a top plate, with the top plate and base plate being stably connected by four uprights.
[0003] However, the width of the base of existing push-type food carts is fixed. In food service scenarios, various types and sizes of plates, trays, and other containers are widely used. When it is necessary to transport wider plates, such as special plates for holding large platters or servings for multiple people, the fixed width of the existing food cart base cannot meet the placement requirements. Users have to replace them with different models of food carts with wider bases, which not only increases procurement costs, but also reduces work efficiency and affects the timeliness of service due to frequent cart replacements. Utility Model Content
[0004] The main purpose of this application is to provide a food cart with a folding and expandable structure, which aims to solve the technical problem that the fixed width of the base plate of the food cart in the prior art cannot meet the placement needs of some items.
[0005] To achieve the above objectives, this application provides a food cart with a folding and extendable structure, comprising:
[0006] The frame body includes a base plate;
[0007] The base plate is provided with an extension component on a first side and / or a second side opposite to each other along a first direction;
[0008] The expansion component includes an expansion plate, the first end of which is hinged to the base plate, the second end of which is rotatable around the first end, and the expansion plate is selectively rotatable in a first direction away from the base plate to unfold, or rotatable in a first direction towards the base plate to fold.
[0009] Optionally, the expansion assembly further includes a hinge unit, which includes a fixing block, a hinge shaft, and a sleeve; two fixing blocks are disposed on the side wall of the base plate, the two ends of the hinge shaft are respectively connected to the fixing blocks, the sleeve is sleeved around the hinge shaft, and the expansion plate is connected to the outer wall of the sleeve.
[0010] Optionally, the expansion assembly further includes a fixing unit, which includes a fixing rod, a guide rod, a locking tongue, and a locking block. The locking block is connected to the base plate and has a locking hole. The fixing rod is located on the outside of the expansion plate, and the expansion plate has multiple guide holes. The guide rod corresponds one-to-one with the guide holes. The first end of the guide rod is connected to the fixing rod, and the second end of the guide rod is located in the guide hole and can move along the guide hole. The locking tongue is disposed on the fixing rod and can enter the locking hole to complete the locking.
[0011] Optionally, when the expansion plate is in a folded state, the axis of the lock hole is parallel to the axis of the guide hole.
[0012] Optionally, the expansion plate is further provided with relief grooves corresponding to the guide holes one by one. The relief grooves penetrate the side wall of the expansion plate, and the extension direction of the relief grooves is consistent with the extension direction of the guide holes. The first end of the relief grooves along the extension direction penetrates the expansion plate, and the second end of the relief grooves is spaced apart from the bottom wall of the guide holes. The expansion plate is provided with a positioning hole on the other side wall opposite to the relief grooves. The positioning hole is used for the guide rod to pass through so that the guide rod can be perpendicular to the expansion plate. The guide rod is used to block items placed on the expansion plate.
[0013] Optionally, the inner wall of the guide hole is provided with a positioning pin, and the outer wall of the guide rod is provided with a sliding groove for cooperating with the positioning pin. The projection of the positioning pin in the positioning hole direction is aligned with the axis of the positioning hole.
[0014] Optionally, the expansion plate is provided with a support plate located below the positioning hole, the support plate being used to support the guide rod.
[0015] Optionally, the frame body also includes a top plate located above the bottom plate, and the top plate and the bottom plate are connected to each other by multiple connecting rods.
[0016] Optionally, a first set of moving wheels is provided below the base plate, and a second set of moving wheels is provided at the lower end of the extension plate when it is in the unfolded state.
[0017] Optionally, the frame body is also provided with a handle for easy gripping.
[0018] The beneficial effects that this application can achieve are:
[0019] This application proposes a food cart with a folding and expanding structure. By setting an expansion component on the first and / or second side of the base plate, the expansion plate of the expansion component can be in an unfolded state and a folded state. When the expansion plate is in the unfolded state, it cooperates with the base plate to expand the usable area of the base plate, thereby increasing the usable area of the base plate and enabling the placement of tableware with a larger projected area. When the expansion plate is not needed, it can be folded and stored without affecting the normal use of the base plate, thus improving the applicability of the food cart. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the main structure of the food cart according to an embodiment of this application;
[0021] Figure 2 for Figure 1 Schematic diagram of the overall structure of prescription A in Traditional Chinese Medicine;
[0022] Figure 3 This is a side view of the food cart according to an embodiment of this application;
[0023] Figure 4 for Figure 3 A partial structural diagram of the extended components in the diagram;
[0024] Figure 5 for Figure 4 A schematic diagram of the first state;
[0025] Figure 6 for Figure 4 A schematic diagram of the second state;
[0026] Figure 7 for Figure 4 The diagram shows the third state.
[0027] 10-Frame body, 11-Base plate, 12-Connecting rod, 13-Top plate, 14-Handle, 15-First moving wheel set, 16-Second moving wheel set, 20-Extension plate, 21-Guide hole, 22-Leaning groove, 23-Positioning hole, 30-Hinge unit, 31-Fixing block, 32-Hinge shaft, 33-Sleeve, 40-Fixing unit, 41-Fixing rod, 42-Guide rod, 43-Lock tongue, 44-Lock block, 45-Lock hole, 50-Positioning pin, 51-Slide groove, 60-Support plate.
[0028] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0033] Example 1
[0034] Reference Figures 1-7 , Figure 3 In this context, X represents the first direction. A first embodiment of this application provides a food cart with a folding extension structure, comprising:
[0035] The frame body 10 includes a base plate 11;
[0036] The base plate 11 is provided with an extension component on a first side and / or a second side opposite to each other along a first direction;
[0037] The expansion component includes an expansion plate 20. The first end of the expansion plate 20 is hinged to the base plate 11. The second end of the expansion plate 20 can be flipped around the first end. The expansion plate 20 can be selectively flipped in a first direction away from the base plate 11 to unfold, or flipped in a first direction towards the base plate 11 to fold.
[0038] In this embodiment, the base plate 11 is a plate-like structure and is part of the frame body 10. For example... Figure 3 As shown, X represents the first direction, i.e. Figure 3 The left and right directions are defined as the first direction. The first and second sides of the base plate 11 along the first direction are the left and right sides of the base plate 11, respectively. There are three ways to set the expansion components: the first method is that the expansion components are only set at the left end of the base plate 11; the second method is that the expansion components are only set at the right end of the base plate 11; and the third method is that expansion components are set at both the left and right ends of the base plate 11. Figure 3 As shown), the direction of movement of the food cart is forward and backward. Taking the extension assembly located on the right side of the base plate 11 as an example, the following explanation is provided: The first end of the extension plate 20 is the left end, and the second end of the extension plate 20 is the right end. The left end of the extension plate 20 is hinged to the right end of the base plate 11, and the right end of the extension plate 20 can flip its left end. When the extension plate 20 flips to the right, and the extension plate 20 and the base plate 11 are on the same plane, the extension plate 20 is in the unfolded state. At this time, the extension plate 20 and the base plate 11 work together to place tableware, etc. Figure 3 As shown, the expansion assembly is in the unfolded state. When the expansion plate 20 is flipped to the left, it is located above the base plate 11, perpendicular to it. At this point, the expansion assembly is in the folded state, as shown... Figure 1 As shown. When the extension board 20 is in the folded state, it can reduce the overall width of the food cart, allowing the food cart to pass through some relatively narrow spaces. The extension board 20 is located on the left and right sides of the base plate 11. The extension board 20 can, to a certain extent, prevent the tableware on the base plate 11 from moving. The extension board 20 can play a protective role, preventing the tableware on the base plate 11 from moving to the edge of the base plate 11 and falling out of the food cart.
[0039] Example 2
[0040] As an optional implementation, this embodiment provides a specific structure of an extension component, including: the extension component further includes a hinge unit 30, the hinge unit 30 includes a fixing block 31, a hinge shaft 32 and a sleeve 33; two fixing blocks 31 are disposed on the side wall of the base plate 11, the two ends of the hinge shaft 32 are respectively connected to the fixing blocks 31, the sleeve 33 is sleeved around the hinge shaft 32, and the extension plate 20 is connected to the outer wall of the sleeve 33.
[0041] Specifically, the two fixing blocks 31 can be installed on the side wall of the base plate 11 by welding or by bolt assembly. The two ends of the hinge shaft 32 are respectively connected to the fixing blocks 31, and the extension plate 20 rotates around the axis of the hinge shaft 32 during the flipping process. The sleeve 33 is rotatably fitted on the hinge shaft 32, and a connecting plate is also provided between the sleeve 33 and the extension plate 20. The connecting plate can be L-shaped.
[0042] Optionally, the expansion assembly also includes a fixing unit 40, which includes a fixing rod 41, a guide rod 42, a locking tongue 43, and a locking block 44. The locking block 44 is connected to the base plate 11 and has a locking hole 45. The fixing rod 41 is located on the outside of the expansion plate 20. The expansion plate 20 has multiple guide holes 21. The guide rod 42 corresponds to each guide hole 21. The first end of the guide rod 42 is connected to the fixing rod 41, and the second end of the guide rod 42 is located in the guide hole 21 and can move along the guide hole 21. The locking tongue 43 is provided on the fixing rod 41 and can enter the locking hole 45 to complete the locking.
[0043] Specifically, the locking block 44 can be set on the side wall of the connecting rod 12, or a column can be set on the base plate 11, and then the locking block 44 can be set on the column. The position of the locking block 44 is fixed, and a locking hole 45 is provided at the upper end of the locking block 44, with the axis of the locking hole 45 extending vertically. The fixing rod 41 is set laterally on the outside of the expansion plate 20. Multiple guide rods 42 are provided on the fixing plate, and multiple guide holes 21 corresponding to the guide rods 42 are provided on the side wall of the expansion plate 20. Parts of the guide rods 42 are located in the guide holes 21, and the guide rods 42 can move along the extension direction of the guide holes 21. Figure 1As shown, when the expansion plate 20 is in the folded state, it is in a vertical position, and the axis of the guide hole 21 is parallel to the axis of the lock hole 45. During installation, when the expansion plate 20 rotates around the axis of the hinge shaft 32, the movement trajectory of the latch 43 is arc-shaped. First, an outward pulling force is applied to the fixing rod 41, causing it to move outward a certain distance to ensure that the latch 43 does not interfere with the locking block 44. When the latch 43 is above the lock hole 45, the fixing rod 41 is driven to move downward. At this time, the guide block moves downward along the guide hole 21, and the latch 43 moves downward along the lock hole 45. Under the gravity of the fixing rod 41, or according to actual usage requirements, counterweight sand can be filled into the fixing rod 41 to maintain the latch 43 in the lock hole 45. At this time, the fixing rod 41 is fixed by the latch 43 cooperating with the lock hole 45, thus completing the fixation of the expansion assembly when it is in the folded state and maintaining the stability of the expansion assembly when it is in the folded state. It should be noted that when it is necessary to release the folded state, an upward external force is applied to the fixing rod 41 to make the locking tongue 43 retract from the lock hole 45.
[0044] Optionally, when the extension plate 20 is in the folded state, the axis of the lock hole 45 is parallel to the axis of the guide hole 21.
[0045] Specifically, by limiting the positions of the lock hole 45 and the guide hole 21, the moving friction of the lock tongue 43 and the guide rod 42 is minimized during the movement of the fixed rod 41, so that the lock tongue 43 can move normally within the lock hole 45 and the guide rod 42 can move normally within the guide hole 21.
[0046] Optionally, the expansion plate 20 is also provided with a relief groove 22 corresponding to the guide hole 21. The relief groove 22 passes through the side wall of the expansion plate 20, and the extension direction of the relief groove 22 is consistent with the extension direction of the guide hole 21. The first end of the relief groove 22 along the extension direction passes through the expansion plate 20, and the second end of the relief groove 22 is at a distance from the bottom wall of the guide hole 21. The expansion plate 20 is provided with a positioning hole 23 on the other side wall opposite to the relief groove 22. The positioning hole 23 is used for the guide rod 42 to pass through so that the guide rod 42 can be perpendicular to the expansion plate 20. The guide rod 42 is used to block items placed on the expansion plate 20.
[0047] Specifically, the purpose of setting the clearance groove 22 is to allow the guide rod 42 to flip upward along the clearance groove 22 when the extension plate 20 is in the unfolded state, so that the guide rod 42 can be in a vertical state relative to the extension plate 20. At this time, all the guide rods 42 can act as a fence, protecting the items placed on the extension plate 20 and reducing the possibility of items sliding off the right side of the extension plate 20. It should be noted that baffles can also be set on the upper surfaces of the front and rear ends of the extension plate 20. However, when the extension plates 20 on both sides of the base plate 11 are flipped inward to a vertical state, the baffles on the two extension plates 20 will not interfere with each other. The baffles on the two extension plates 20 can cooperate to form a blocking assembly, forming a blocking structure around the base plate 11, which can protect the items placed on the base plate 11.
[0048] Optionally, the inner wall of the guide hole 21 is provided with a positioning pin 50, and the outer wall of the guide rod 42 is provided with a sliding groove 51 for cooperating with the positioning pin 50. The projection of the positioning pin 50 in the direction of the positioning hole 23 is aligned with the axis of the positioning hole 23.
[0049] like Figure 4 As shown, the expansion plate 20 is in its newly unfolded state. The lateral length of the guide hole 21 is greater than the lateral length of the relief groove 22. The right ends of both the guide hole 21 and the relief groove 22 penetrate the right end face of the expansion plate 20. The left end of the relief groove 22 and the left end of the guide hole 21 form a limiting space for limiting the guide rod 42. The width of the relief groove 22 is greater than the width of the guide rod 42 to ensure that the guide rod 42 can move upward through the relief groove 22.
[0050] When it is necessary to drive the guide rod 42 to flip upward, a rightward pulling force needs to be applied to all the guide rods 42 through the fixing rod 41, so that the left end of the guide rod 42 exits from the limiting space and moves out as shown. Figure 5 At this point, the left end of the guide rod 42 loses the obstruction effect of the upper inner wall of the guide hole 21, and the right end of the guide rod 42 flips upward to the position shown. Figure 6 The guide rod 42 is positioned so that its lower end passes through the positioning hole 23. The positioning hole 23 then limits the guide rod 42, keeping it vertical. At this point, all the guide rods 42 act as a fence. It should be noted that a groove 51 is provided on the outer wall of the guide rod 42, and a positioning pin 50 is provided on the inner wall of the guide hole 21. The positioning pin 50 is fixed in position, and through its cooperation with the groove 51, it limits the movement of the guide rod 42. The positioning pin 50 is located above the positioning hole 23 so that when the guide rod 42 is vertical, a downward force can be directly applied to it, allowing the lower end of the guide rod 42 to enter the guide hole 21.
[0051] Optionally, the extension plate 20 is provided with a support plate 60 located below the positioning hole 23, which is used to support the guide rod 42.
[0052] Specifically, when the guide rod 42 moves downward through the positioning hole 23, the lower end of the guide rod 42 can abut against the support plate 60 to form a limiting structure, and the support plate 60 supports the guide rod 42.
[0053] Optionally, the frame body 10 also includes a top plate 13 located above the base plate 11, and the top plate 13 and the base plate 11 are connected to each other by multiple connecting rods 12. A first set of moving wheels 15 is provided below the base plate 11, and a second set of moving wheels 16 is provided at the lower end of the extension plate 20 when it is in the unfolded state. The frame body 10 is also provided with a handle 14 for easy gripping.
[0054] Specifically, the first set of movable wheels 15 may include multiple movable wheels, and the first set of movable wheels 15 and the second set of movable wheels 16 may be of the same type. It should be noted that the movable wheels may be omnidirectional wheels equipped with a locking structure. By providing a handle 14 on the frame body 10, it is convenient for the user to apply pushing or pulling force to the frame body 10 by gripping the handle 14.
[0055] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A food cart with a folding and extendable structure, characterized in that, include: The frame body includes a base plate; The base plate is provided with an extension component on a first side and / or a second side opposite to each other along a first direction; The expansion component includes an expansion plate, the first end of which is hinged to the base plate, the second end of which is rotatable around the first end, and the expansion plate is selectively rotatable in a first direction away from the base plate to unfold, or rotatable in a first direction towards the base plate to fold.
2. The dining cart with a folding and extending structure as described in claim 1, characterized in that, The expansion assembly further includes a hinge unit, which includes a fixing block, a hinge shaft, and a sleeve; two fixing blocks are disposed on the side wall of the base plate, the two ends of the hinge shaft are respectively connected to the fixing blocks, the sleeve is sleeved around the hinge shaft, and the expansion plate is connected to the outer wall of the sleeve.
3. The dining cart with a folding and extending structure as described in claim 1, characterized in that, The expansion assembly also includes a fixing unit, which includes a fixing rod, a guide rod, a locking tongue, and a locking block. The locking block is connected to the base plate and has a locking hole. The fixing rod is located on the outside of the expansion plate, and the expansion plate has multiple guide holes. The guide rod corresponds to each of the guide holes. The first end of the guide rod is connected to the fixing rod, and the second end of the guide rod is located in the guide hole and can move along the guide hole. The locking tongue is disposed on the fixing rod and can enter the locking hole to complete the locking.
4. The dining cart with a folding and extending structure as described in claim 3, characterized in that, When the expansion plate is in the folded state, the axis of the lock hole is parallel to the axis of the guide hole.
5. The dining cart with a folding and extending structure as described in claim 3, characterized in that, The expansion plate is also provided with relief grooves corresponding to the guide holes one by one. The relief grooves penetrate through the side wall of the expansion plate, and the extension direction of the relief grooves is consistent with the extension direction of the guide holes. The first end of the relief grooves along the extension direction penetrates through the expansion plate, and the second end of the relief grooves is spaced apart from the bottom wall of the guide holes. The expansion plate is provided with positioning holes on the other side wall opposite to the relief grooves. The positioning holes are used for the passage of guide rods so that the guide rods can be perpendicular to the expansion plate. The guide rods are used to block items placed on the expansion plate.
6. The dining cart with a folding and extending structure as described in claim 5, characterized in that, The inner wall of the guide hole is provided with a positioning pin, and the outer wall of the guide rod is provided with a sliding groove for cooperating with the positioning pin. The projection of the positioning pin in the positioning hole direction is aligned with the axis of the positioning hole.
7. The dining cart with a folding and extending structure as described in claim 5, characterized in that, The expansion plate is provided with a support plate located below the positioning hole, and the support plate is used to support the guide rod.
8. The dining cart with a folding extension structure as described in claim 1, characterized in that, The frame body also includes a top plate located above the bottom plate, and the top plate and the bottom plate are connected to each other by multiple connecting rods.
9. The dining cart with a folding and extending structure as described in claim 1, characterized in that, A first set of wheels is provided below the base plate, and a second set of wheels is provided at the lower end of the extension plate when it is in the unfolded state.
10. The dining cart with a folding extension structure as described in claim 1, characterized in that, The frame itself is also equipped with handles for easy gripping.