Foldable pull type mobile dining car

Abstract

The invention discloses a foldable pull type mobile dining car, and relates to the technical field of workbenches, mobile vending cars, mobile dining cars and the like. Comprising a plurality of workbenches, hinge devices, a fixing frame, pull connecting devices and moving wheels, the workbenches are sequentially hinged through the hinge devices, the workbenches can rotate around the hinge devices to be unfolded or folded to be stored, and the workbenches can be combined to form an L-shaped workbench set or a linear workbench set after being unfolded. After being stored, the workbenches are stacked in parallel to form a compact folding shape, and after the workbenches are clamped and locked through the fixing frame, the workbenches are connected with an automobile through the pull connecting device and the moving wheels to be dragged to move forwards. Flexible unfolding and folding of the workbench are achieved through the hinge structure, the operation space and the display area are enlarged, and meanwhile convenient and safe transportation and movement are achieved through the fixing frame and the pull-hanging structure.

Description

Technical Field

[0001] The invention relates to the technical fields of workbenches, mobile vending trucks, mobile dining vehicles and the like, and in particular to a foldable trailer-type mobile dining vehicle. Background Art

[0002] Existing workstations or mobile dining carts usually have the following problems: 1. Limited operating space: The existing design is only suitable for 1-3 people to operate, and cannot meet the needs of multiple people using it at the same time; 2. Insufficient display area: The display area is small and cannot meet the needs of business display; 3. Inconvenient transportation: Traditional dining cars can increase the operating space and display area by increasing the length of the workbench, but this will cause the overall structure to be too long and too heavy, making it difficult to move and transport. There are potential safety hazards during the process, and it is impossible to balance the increase in operating space and display area with transportation safety.

[0003] Therefore, there is an urgent need for a mobile dining car that can flexibly adjust the operating space and display area and is easy to transport. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a foldable trailer-type mobile dining car, which can realize flexible unfolding and folding of the workbench through a hinged structure, thereby expanding the operating space and display area, and at the same time realize convenient transportation and movement through a fixed frame and a trailer structure.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a foldable trailer-type mobile dining car, comprising at least two workbenches, a hinge device, a fixed frame, a trailer connection device and moving wheels. The workbenches are hinged in sequence through the hinge device. The workbenches can be rotated around the hinge device to unfold or folded and stored. After unfolding, they can be combined to form an L-shaped workbench group or a linear workbench group. After storage, the workbenches are stacked in parallel to form a compact folding shape. After being clamped and locked by a fixed frame, they are connected to the car through the trailer connection device and the moving wheels and dragged forward.

[0006] Preferably, there are two or three workbenches, which are rotated 0°, 90° or 180° around the hinge device to form a folded state, an L-shaped workbench group or a linear workbench group, respectively.

[0007] Preferably, the hinge device is a rotating shaft, a hinge or a hinge pin. When two workbenches are hinged, the hinge device sets hinge points at the inner corners adjacent to the workbenches. When three workbenches are hinged, the hinge device sets hinge points at designated side corners of adjacent workbenches, so that the hinge device can rotate 0-180° to allow the workbenches to be folded and unfolded.

[0008] Preferably, the fixing frame adopts a U-shaped fixing frame or a mouth-shaped fixing frame, including a longitudinal support rod and a transverse support rod. When the workbenches are stacked in parallel for storage, the two longitudinal support rods are arranged in parallel on the outsides of the first and last workbenches and are respectively fixedly connected to the workbenches. Connectors are provided at both ends of the transverse support rods, which are respectively plugged into one end of the two longitudinal support rods and fixed by bolts or buckles, so that each workbench is clamped and locked.

[0009] Preferably, a plurality of slots at different distances are provided on the longitudinal support rod, which are connected and fixed to the connectors at both ends of the transverse support rod, so that the fixing frame can adapt to the length of different workbenches.

[0010] Preferably, the movable wheels include multiple small universal wheels and two large automobile wheels. The small universal wheels can be telescopically or detachably installed at the bottom of the workbench and are used for folding, unfolding, and short-distance movement and adjustment of the dining cart. The two large automobile wheels are respectively arranged in the middle of two longitudinal support rods of the fixed frame and are connected to the longitudinal support rods through bearings. They are used for long-distance movement of the dining cart after it is folded and fixed.

[0011] Preferably, the towing connection device is a D-shaped towing ring, which is fixedly arranged in the middle of the cross support rod of the fixed frame.

[0012] Preferably, the sides of the first and last workbenches are also connected with foldable and detachable expansion devices, and the expansion devices are connected to the sides of the workbenches by bolts or buckles.

[0013] Preferably, the foldable and detachable expansion device includes a connecting piece, an expansion platform and a supporting frame. The connecting piece is arranged on the side of the workbench, one end of the expansion platform is hinged to the connecting piece, and the other end of the expansion platform is connected to the supporting frame. The expansion platform is composed of a plurality of planes connected in sequence, and adjacent planes are hinged. After the expansion device is unfolded, the expansion platform forms a continuous horizontal plane and is fixed by a pin. After storage, the connecting piece and the expansion platform are placed in the supporting frame and fixed to the side of the workbench by bolts, which is convenient for storage and transportation.

[0014] Preferably, sleeve buckles are respectively provided at the four corners of the top of the workbench, a telescopic support rod is inserted into the sleeve buckle, and a display rack is connected to the top of the support rod. The display rack is fixed by bolts and can be folded and stored on the top of the workbench, thereby lowering the center of gravity of the entire dining car for easy storage and transportation.

[0015] Beneficial effects of the invention: The invention realizes flexible unfolding and folding of the workbench through the hinge device, which can expand the operating space and display area, and realizes convenient transportation and movement through the fixed frame and the trailer structure. The vehicle is suitable for the fields of workbench, mobile vending truck, mobile dining car, etc., and has the advantages of flexible operation, convenient transportation, large display area, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments; Figure 1 This is a schematic diagram of the expanded structure of Example 1 of the present invention; Figure 2 This is a schematic diagram of the storage structure of Example 1 of the present invention; Figure 3 This is a schematic diagram of the expanded structure of Embodiment 2 of the present invention; Figure 4 This is a schematic diagram of the storage structure of Example 2 of the present invention; Figure 5 This is a schematic diagram of the expanded structure of Embodiment 3 of the present invention; Figure 6 This is a schematic diagram of the storage structure of Example 3 of the present invention. DETAILED DESCRIPTION

[0017] 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 implementation methods. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] In the description of the present application, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "side", "specified side", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description.

[0019] Example 1: Reference Figure 1-2 The present specific embodiment adopts the following technical scheme: a foldable trailer-type mobile dining car, comprising two workbenches 1, an articulation device 2, a trailer connection device 4, a fixed frame 5 and a moving wheel 6, wherein the fixed frame is a U-shaped fixed frame, and the two workbenches 1 are hinged by the articulation device 2, and the workbenches 1 can be rotated around the articulation device to be unfolded or folded and stored, and the workbenches 1 rotate around the articulation device at an angle of 90° to form an L-shaped workbench group, and the workbenches 1 rotate around the articulation device at an angle of 180° to form a linear workbench group. After storage, the workbenches 1 are stacked in parallel to form a compact folding shape, and are clamped and locked by the fixed frame 5 and then connected to the car through the trailer connection device 4 and the moving wheel 6 to be dragged forward.

[0020] It is worth noting that the workbench is rotated around the hinge device by 0°, 90° or 180° to form a folded state, an L-shaped workbench group or a straight workbench group respectively.

[0021] It is worth noting that the hinge device 2 is provided with hinge points at the inner corners adjacent to the worktables (Note: Figure 1 In the unfolded workbench group, the operator's standing position is the inner side, and the position opposite to the operator's standing position is the outer side) so that the hinge device 2 can rotate 0-180° to allow the workbenches to be folded and unfolded.

[0022] It is worth noting that the fixing frame 5 is a U-shaped fixing frame, including two longitudinal support rods 51 and a transverse support rod 52, and the longitudinal support rods 51 are arranged in parallel on the outer sides of the first and last workbenches 1 (Note: Figure 2 The workbench set in the storage state, the adjacent surface at the folded position is the inner side, and the two side surfaces parallel to it are the outer side) are fixedly connected to the workbench 1 respectively, and the two ends of the horizontal support rod 52 are provided with connectors, which are respectively plugged into one end of the two vertical support rods 51, and fixed by bolts or buckles, so as to clamp and lock each workbench 1. A plurality of bayonet holes 53 at different distances are provided on the vertical support rod 51, which are connected and fixed with the connectors at both ends of the horizontal support rod 52, so that the fixed frame 5 can adapt to the length of different workbenches 1.

[0023] It is worth noting that the moving wheels 6 include a plurality of small universal wheels 61 and two large automobile wheels 62. The small universal wheels 61 are retractably or detachably mounted at the bottom of the workbench for folding and unfolding the dining cart and for short-distance movement and adjustment. The two large automobile wheels 62 are respectively arranged in the middle of the two longitudinal support rods 51 of the fixed frame 5, and are connected to the longitudinal support rods 51 through bearings for long-distance movement of the dining cart after folding and fixing. The towing connection device 4 is a D-shaped towing ring, which is fixedly arranged in the middle of the transverse support rod 52 of the fixed frame 5.

[0024] In addition, sleeve buckles 8 are respectively provided at the four corners of the top of the workbench 1, and a telescopic support rod 9 is inserted into the sleeve buckle 8. A display rack 10 is connected to the top of the support rod 9. The display rack 10 is fixed by bolts and can be folded and stored on the top of the workbench, thereby lowering the center of gravity of the entire dining car and making it safer to move.

[0025] When unfolding the embodiment, the bolts or buckles of the fixing frame 5 are loosened, the horizontal support rod 52 is removed, and then the two workbenches are rotated and unfolded by rotating 90° around the hinge device 2 to form an L-shaped workbench group. The workbench 1 is further rotated to 180° to form a linear workbench group. When folding and storing, the workbench starts from the linear state, rotates around the hinge device 2 to 0°, returns to the parallel superimposed compact folded state, and the fixing frame 5 clamps and locks it.

[0026] The workbench 1 of this embodiment can be rotated 90° to form an L-shaped workbench, or rotated 180° to form a linear workbench. In the unfolded state, the operating space and display area of ​​the workbench 1 are significantly expanded, which is suitable for multi-person operation and business display. Folded state: The workbench 1 is rotated to 0° through the hinge device 2, and after folding, each workbench is stacked in parallel to form a compact folded shape. The folded workbench 1 is fixed by a U-shaped fixing frame to ensure structural stability.

[0027] This embodiment realizes flexible unfolding and folding of the workbench 1 through the ingenious design of the hinge device 2, the U-shaped fixing frame and the towing connection device 4, which not only meets the needs of multi-person operation and business display, but also facilitates storage and transportation. It has a stable structure, simple operation, and a wide range of applications, and has significant technical advantages and practical value.

[0028] Example 2: Reference Figure 3-4 This embodiment is further improved on the basis of embodiment 1, the sides of the first and last workbenches 1 (note: Figure 3 The workbench group in the unfolded state, the left side of the operator's standing position is the left side and the right side is the right side, that is, the left side of a workbench and the right side of a workbench) is also connected with a foldable and detachable expansion device 7, the expansion device 7 includes a connecting member 71, an expansion platform 72 and a supporting frame 73, the connecting member 71 is arranged on the side of the workbench, the connecting member 71 is hinged to one end of the expansion platform 72, and the other end of the expansion platform 72 is connected to the supporting frame 73, the expansion platform 72 is composed of a plurality of planes connected in sequence, and the adjacent planes are hinged. After the expansion device is unfolded, the expansion platform 72 forms a continuous horizontally arranged plane and is fixed by a pin. After storage, the connecting member 71 and the expansion platform 72 are both placed in the supporting frame 73 and fixed to the side of the workbench 1 by bolts.

[0029] The unfolding process of this embodiment is as follows: the detachable expansion device 7 is connected to the side of the workbench by bolts or buckles. After loosening the fixing device, the support frame 73 is pulled away from the side of the workbench. The multiple connected planes of the expansion platform 72 are pulled open to a horizontal state and fixed by latches to form a continuous plane, which significantly increases the operating space and display area. In contrast to the unfolding order of the expansion device, when folding and storing, the connector 71 and the expansion platform 72 are folded and placed in the support frame 73. The folded expansion device 7 can be further stored in a U-shaped fixing frame to ensure the compactness and stability of the overall structure. The folded expansion device 7 will not affect the folding and towing transportation of the workbench 1.

[0030] This embodiment further expands the operating space and display area while maintaining the convenience of folding and transportation. It has strong flexibility, convenient storage, stable structure, significant technical advantages and practical value, and is particularly suitable for application scenarios that require larger operating space and multi-functional partitions.

[0031] Example 3: Reference Figure 5-6 This embodiment is further improved on the basis of Embodiment 1 and Embodiment 2, and the two workbenches are expanded into three workbenches. The three workbenches 1 are hinged by hinge devices 2, and the hinge devices 2 are respectively located at the designated side angles of the adjacent workbenches to set the hinge points (Note: Figure 5 In the unfolded workbench group, the operator's standing position is the inner side, and the opposite side of the operator's standing position is the outer side. The first hinge point is set at the inner corner where the first workbench is adjacent to the second workbench, and the second hinge point is set at the outer corner where the second workbench is adjacent to the third workbench), so that the hinge device 2 can rotate 0-180° to allow the workbenches to be folded and unfolded.

[0032] This embodiment also uses a mouth-shaped fixed frame composed of two longitudinal support rods 51 and two transverse support rods 52, and the longitudinal support rods 51 are arranged in parallel on the outer sides of the first and last workbenches 1 (Note: Figure 6 The workbench set in the folded state, with the adjacent sides of the folded part as the inner side and the two sides parallel thereto as the outer side), is fixedly connected to the workbench 1 respectively. Connectors are provided at both ends of the horizontal support rod 52, which are respectively plugged into one end of the two vertical support rods 51 and fixed by bolts or buckles, so as to clamp and lock each workbench 1. Multiple bayonet holes 53 at different distances are provided on the vertical support rod 51, which are connected and fixed with the connectors at both ends of the horizontal support rod 52, so that the fixed frame 5 can adapt to the length of different workbenches 1.

[0033] In the unfolded state, the operating space and display area of ​​the three workbenches 1 are further expanded, which is suitable for larger-scale multi-person operation and business display. The three workbenches 1 are folded by rotating to 0° through the hinge device 2; the folding method is similar to that of embodiment 1 and embodiment 2.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A foldable trailer-type mobile dining car, characterized in that: The invention comprises at least two workbenches (1), an articulated device (2), a fixed frame (5), a towing connection device (4) and a moving wheel (6). The workbenches (1) are hinged in sequence through the articulated device (2). The workbenches (1) can be rotated around the articulated device to be unfolded or folded and stored. After unfolding, they can be combined to form an L-shaped workbench group or a linear workbench group. After being stored, the workbenches (1) are stacked in parallel to form a compact folded shape. After the workbenches are clamped and locked by the fixed frame (5), they are connected to the car through the towing connection device (4) and the moving wheel (6) and dragged forward.

2. The foldable trailer-type mobile dining vehicle according to claim 1, characterized in that: The workbenches (1) are two or three and are rotated 0°, 90° or 180° around the hinge device (2) to form a folded state, an L-shaped workbench group or a linear workbench group respectively.

3. The foldable trailer-type mobile dining vehicle according to claim 2, characterized in that: The hinge device (2) is a rotating shaft, a hinge or a hinge pin. When two workbenches (1) are hinged, the hinge device (2) sets a hinge point at the inner corners of the adjacent workbenches. When three workbenches (1) are hinged, the hinge device (2) sets a hinge point at the designated side corners of the adjacent workbenches, so that the hinge device (2) can rotate 0-180° to allow the workbenches to be folded and unfolded.

4. The foldable trailer-type mobile dining vehicle according to claim 2, characterized in that: The fixing frame (5) is a U-shaped fixing frame or a mouth-shaped fixing frame, comprising a longitudinal support rod (51) and a transverse support rod (52). When the workbenches are stacked and stored in parallel, the two longitudinal support rods (51) are arranged in parallel on the outside of the first and last workbenches (1) and are respectively fixedly connected to the workbenches (1). Connectors are provided at both ends of the transverse support rod (52), which are respectively plugged into one end of the two longitudinal support rods (51) and fixed by bolts or buckles, thereby clamping and locking the workbenches (1).

5. The foldable trailer-type mobile dining vehicle according to claim 4, characterized in that: The longitudinal support rod (51) is provided with a plurality of bayonet holes (53) at different distances, which are connected and fixed to the connectors at both ends of the transverse support rod (52), so that the fixed frame (5) can adapt to the lengths of different workbenches (1).

6. The foldable trailer-type mobile dining vehicle according to claim 4, characterized in that: The moving wheels (6) include a plurality of small universal wheels (61) and two large automobile wheels (62). The small universal wheels (61) are telescopically or detachably mounted on the bottom of the workbench and are used for folding and unfolding the dining cart and for short-distance movement and adjustment. The two large automobile wheels (62) are respectively arranged in the middle of two longitudinal support rods (51) of the fixed frame (5) and are connected to the longitudinal support rods (51) through bearings and are used for long-distance movement of the dining cart after it is folded and fixed.

7. The foldable trailer-type mobile dining vehicle according to claim 4, characterized in that: The towing connection device (4) is a D-shaped towing ring, which is fixedly arranged in the middle of the transverse support rod (52) of the fixed frame (5).

8. The foldable trailer-type mobile dining vehicle according to claim 1, characterized in that: The sides of the first and last workbenches (1) are also connected with foldable and detachable expansion devices (7), and the expansion devices (7) are connected to the sides of the workbenches by bolts or buckles.

9. The foldable trailer-type mobile dining vehicle according to claim 8, characterized in that: The foldable and detachable expansion device (7) comprises a connecting piece (71), an expansion platform (72) and a supporting frame (73). The connecting piece (71) is arranged on the side of the workbench (1). One end of the expansion platform (72) is hinged to the connecting piece (71), and the other end of the expansion platform (72) is connected to the supporting frame (73). The expansion platform (72) is composed of a plurality of planes connected in sequence, and the adjacent planes are hinged. After the expansion device is unfolded, the expansion platform (72) forms a continuous horizontally arranged plane and is fixed by a latch. After being stored, the connecting piece (71) and the expansion platform (72) are both placed in the supporting frame (73) and fixed to the side of the workbench (1) by bolts.

10. The foldable trailer-type mobile dining vehicle according to claim 1, characterized in that: Sleeve buckles (8) are respectively arranged at the four corners of the top of the workbench (1), a telescopic support rod (9) is inserted into the sleeve buckle (8), and a display frame (10) is connected to the top of the support rod (9). The display frame (10) is fixed by bolts and can be folded and stored on the top of the workbench.

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