Dining car convenient for passing through doorsill

Abstract

Supporting legs of the dining car are hinged to the front side and the rear side of a bottom frame respectively, and wheels are arranged at the lower ends of the supporting legs. The front wheel recycling assembly is hinged to the front wheel supporting legs, the bottom frame and the fixing frame and rotates towards the bottom frame to be recycled. The rear wheel recycling assembly is hinged to the rear wheel supporting legs and the bottom frame and rotates towards the bottom frame to be recycled. The sliding assembly is arranged on the bottom face of the bottom frame, and the dining car cabinet is arranged on the bottom frame. The supporting legs of the dining car wheels are provided with the front wheel recycling assemblies and the rear wheel recycling assemblies, and the bottom frame is provided with the sliding assemblies, so that when the dining car passes through a threshold, the sliding assemblies are matched with the front wheel recycling assemblies and the rear wheel recycling assemblies to quickly pass through the threshold. The product is simple in structure, convenient to operate and stable and firm in structure, the dining car can quickly pass through the threshold, transportation stability is guaranteed, the serving efficiency and quality are improved, and application and popularization are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of dining cars, and in particular relates to a dining car with a threshold that is convenient for passage. Background Art

[0002] As an important tool for delivering meals in the catering industry such as hotels and restaurants, dining carts can save manpower and material resources, reduce the intensity of staff, be safe and reliable, ensure the quality of dishes, and avoid pollution. However, existing dining carts can only meet the needs of walking on horizontal ground. For restaurants with ancient style designs, the threshold design is usually retained, some of which are as high as more than ten centimeters or even more than twenty centimeters. It is difficult for ordinary dining carts to pass through. Manual serving of dishes is not only time-consuming and laborious, but also poses a great safety hazard. The purpose of this application is to design a dining cart that can pass through the threshold. Utility Model Content

[0003] The utility model provides a dining car which is convenient for passing through a threshold and can effectively solve the above-mentioned problem.

[0004] The utility model is achieved in this way:

[0005] A dining cart that is easy to pass through the threshold, comprising a bottom frame, a fixed frame, support legs, wheels, a front wheel recovery assembly, a rear wheel recovery assembly, a sliding assembly and a dining cart cabinet, wherein the fixed frame is arranged at the front end of the bottom frame, the support legs are respectively hinged to the front and rear sides of the bottom frame, and the wheels are arranged at the lower ends of the support legs; the front wheel recovery assembly is hinged to the front wheel support legs, the bottom frame and the fixed frame, and is rotated toward the bottom frame for recovery; the rear wheel recovery assembly is hinged to the rear wheel support legs and the bottom frame, and is rotated toward the bottom frame for recovery; the sliding assembly is arranged on the bottom surface of the bottom frame, and the dining cart cabinet is arranged on the bottom frame.

[0006] As a further improvement, the front wheel recovery assembly is provided with a first U-shaped frame, a shift rod, a first connecting rod, a first shift pin and a limit plate, the first U-shaped frame is arranged on the side of the fixed frame, and the open ends are respectively fixedly connected to the upper ends of the front wheel support legs; the upper and lower parts of the fixed frame are respectively provided with an upper cross bar and a lower cross bar, one end of the shift rod is hinged to the middle part of the lower cross bar, one end of the first connecting rod is hinged to the upper part of the shift rod, and the other end is hinged to the middle part of the first U-shaped frame, the first shift pin is arranged on one side of the shift rod and is hinged to the upper cross bar, the limit plate is fixed to the other side of the shift rod and is fixed to the upper cross bar, and the upper end of the shift rod is limited within the first shift pin and the limit plate.

[0007] As a further improvement, the rear wheel recovery assembly is provided with a second U-shaped frame, a second connecting rod, a linkage rod and a second detent pin. The second U-shaped frame is arranged on the side of the fixed frame, and the end of the cross bar is located on the front upper side of the fixed frame, and the open end is hinged to the middle of both sides of the bottom frame. One end of the second connecting rod is fixedly connected to the open end of the second U-shaped frame, one end of the linkage rod is hinged to the other end of the second connecting rod, and the other end is hinged to the middle of the rear wheel support leg. The middle part of the second detent pin is hinged to the upper end of the fixed frame, and the cross bar of the second U-shaped frame is limited between the second detent pin and the fixed frame.

[0008] As a further improvement, the connection angles between the first U-shaped frame and the front wheel support leg, and between the second U-shaped frame and the second connecting rod are obtuse angles.

[0009] As a further improvement, the sliding assembly is provided with a slide rail, a slide frame, a pulley and a support, the slide rail is fixed to the bottom surface of the bottom frame, the slide rail is provided with a T-shaped slide groove, the slide frame is provided with supports at at least four corners, the support is provided with a pulley, and the pulley is arranged in the T-shaped slide groove.

[0010] As a further improvement, the slide is provided with a pull rope or a tension spring connected to the front end of the bottom frame.

[0011] As a further improvement, an "L"-shaped limit block is provided on the front side of the front wheel support leg and the rear side of the rear wheel support leg, the "L"-shaped limit block is fixed to the bottom frame, and the front wheel support leg and the rear wheel support leg are arranged between the "L"-shaped limit block and the bottom frame.

[0012] As a further improvement, limiting strips are provided on both sides of the slide, and the thickness of the front end of the limiting strip is smaller than the thickness of the rear end.

[0013] As a further improvement, the supporting leg is provided with a sleeve rod, an insertion rod, a limiting cap and a spring, an adjustment hole is provided on one side of the sleeve rod, a mounting hole is provided on one side of the insertion rod, the limiting cap is arranged in the mounting hole, and the rear end edge of the limiting cap is larger than the diameter of the mounting hole, and the spring is arranged between the mounting hole and the limiting inner.

[0014] As a further improvement, at least the front wheel is a universal wheel, and the universal wheel is a universal wheel with a brake.

[0015] The beneficial effects of the utility model are as follows: the supporting legs of the wheels of the dining cart are provided with a front wheel recovery assembly and a rear wheel recovery assembly, and the bottom frame is provided with a sliding assembly, so that when the dining cart passes through a threshold, the sliding assembly and the threshold are first supported, the front wheel supporting legs are folded up through the front wheel recovery assembly, and then the dining cart is moved forward through the sliding assembly, and the front wheel is reset after passing through the threshold; then the rear wheel supporting legs are folded up through the rear wheel recovery assembly, and then the dining cart is continued to be moved forward through the sliding assembly, and the rear wheel is reset after passing through the threshold, and after the reset is completed, the front wheel recovery assembly and the rear wheel recovery assembly are locked through the first and second pins. The product has a simple structure, is easy to operate, and has a stable and firm structure. It can quickly enable the dining cart to pass through the threshold, ensure the stability of transportation, improve the efficiency and quality of serving dishes, and is conducive to promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of a dining car that facilitates threshold passage of the utility model;

[0018] Figure 2 It is a schematic diagram of a sliding assembly provided in an embodiment of a dining car that facilitates passage through a threshold of the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of a sliding assembly provided by an embodiment of a dining car that facilitates passage through a threshold of the utility model;

[0020] Figure 4 This is a front view of an embodiment of a dining car that facilitates threshold passage according to the utility model;

[0021] Figure 5 It is a schematic diagram of the supporting leg structure provided by an embodiment of a dining car that facilitates passage through a threshold of the utility model;

[0022] Figure 6 It is a cross-sectional view of a support leg provided in an embodiment of a dining car that facilitates passage through a threshold of the utility model.

[0023] Reference numerals:

[0024] Bottom frame 1; fixing frame 2; upper cross bar 21; lower cross bar 22; supporting leg 3; front wheel supporting leg 31; rear wheel supporting leg 32; sleeve rod 33; insertion rod 34; limiting cap 35; spring 36; adjustment hole 37; mounting hole 38; wheel 4; front wheel recovery assembly 5; first U-shaped frame 51; lever 52; first connecting rod 53; first lever pin 54; limiting plate 55; rear wheel recovery assembly 6; second U-shaped frame 61; second connecting rod 62; linkage rod 63; second lever pin 64; sliding assembly 7; slide rail 71; slide frame 72; pulley 73; support 74; T-shaped slide groove 75; pull rope 76; tension spring 77; limiting strip 78; dining car cabinet 8; "L"-shaped limiting block 9. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0026] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the description of the present invention, the terms "upper", "middle", "side", "side", "upper side", "end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] Reference Figure 1-6As shown, a dining car that is easy to pass through the threshold includes a bottom frame 1, a fixed frame 2, support legs 3, wheels 4, a front wheel recovery assembly 5, a rear wheel recovery assembly 6, a sliding assembly 7 and a dining car cabinet 8, wherein the fixed frame 2 is arranged at the front end of the bottom frame 1, the support legs 3 are respectively hinged to the front and rear sides of the bottom frame 1, and the wheels 4 are arranged at the lower ends of the support legs 3; the front wheel recovery assembly 5 is hinged to the front wheel support legs 31, the bottom frame 1 and the fixed frame 2, and is rotated toward the bottom frame 1 for recovery; the rear wheel recovery assembly 6 is hinged to the rear wheel support legs 32 and the bottom frame 1, and is rotated toward the bottom frame 1 for recovery; the sliding assembly 7 is arranged on the bottom surface of the bottom frame 1, and the dining car cabinet 8 is arranged on the bottom frame 1.

[0029] When the dining cart passes through the threshold, the sliding assembly 7 is first used to form a support with the threshold, and then the front wheel support leg 31 is retracted through the front wheel recovery assembly 5, and then the dining cart is moved forward through the sliding assembly 7, and the front wheel is reset after passing through the threshold; then the rear wheel support leg 32 is retracted through the rear wheel recovery assembly 6, and then the dining cart is continued to be moved forward through the sliding assembly 7, and the rear wheel is reset after passing through the threshold.

[0030] Furthermore, the front wheel recovery assembly 5 is provided with a first U-shaped frame 51, a lever 52, a first connecting rod 53, a first lever pin 54 and a limit plate 55. The first U-shaped frame 51 is arranged on the side of the fixed frame 2, and the open ends are respectively fixedly connected to the upper ends of the front wheel support legs 31; the upper and lower parts of the fixed frame 2 are respectively provided with an upper cross bar 21 and a lower cross bar 22, one end of the lever 52 is hinged to the middle part of the lower cross bar 22, one end of the first connecting rod 53 is hinged to the upper part of the lever 52, and the other end is hinged to the middle part of the first U-shaped frame 51, the first lever pin 54 is arranged on one side of the lever 52 and is hinged to the upper cross bar 21, the limit plate 55 is fixed to the other side of the lever 52 and is fixed to the upper cross bar 21, and the upper end of the lever 52 is limited within the first lever pin 54 and the limit plate 55.

[0031] The lever 52 drives the first U-shaped frame 51 to rotate through the first connecting rod 53, and the front wheel supporting leg 31 also rotates.

[0032] The first U-shaped frame 51 can be used as a cart handle during use.

[0033] Furthermore, the rear wheel recovery assembly 6 is provided with a second U-shaped frame 61, a second connecting rod 62, a linkage rod 63 and a second pin 64. The second U-shaped frame 61 is arranged on the side of the fixed frame 2, and the cross bar end is located on the front upper side of the fixed frame 2, and the open end is hinged to the middle of both sides of the bottom frame 1. One end of the second connecting rod 62 is fixedly connected to the open end of the second U-shaped frame 61, one end of the linkage rod 63 is hinged to the other end of the second connecting rod 62, and the other end is hinged to the middle of the rear wheel support leg 32. The middle part of the second pin 64 is hinged to the upper end of the fixed frame 2, and the cross bar of the second U-shaped frame 61 is limited between the second pin 64 and the fixed frame 2.

[0034] The second U-shaped frame 61 is pressed down to rotate, and the linkage rod 63 is driven by the second connecting rod 62, and the linkage rod 63 drives the rear wheel support leg 32 to rotate

[0035] Furthermore, the connection angles between the first U-shaped frame 51 and the front wheel supporting leg 31 and between the second U-shaped frame 61 and the second connecting rod 62 are obtuse angles.

[0036] The obtuse angle setting can ensure a better rotation angle, save more effort, and does not affect the movement of the dining car after rotation.

[0037] Furthermore, the sliding assembly 7 is provided with a slide rail 71, a slide 72, a pulley 73 and a support 74. The slide rail 71 is fixed to the bottom surface of the bottom frame 1, and a T-shaped slide groove 75 is provided on the slide rail 71. The slide 72 is provided with a support 74 at least at four corners. The support 74 is provided with a pulley 73, and the pulley 73 is arranged in the T-shaped slide groove 75.

[0038] The sliding assembly 7 enables the dining car to continue to move after the front wheel or the rear wheel is retracted. The T-shaped slide groove 75 serves as a sliding groove and also serves to fix the slide frame 72.

[0039] Furthermore, the slide 72 is provided with a pull rope 76 or a tension spring 77 connected to the front end of the bottom frame 1 .

[0040] The pull rope 76 or the tension spring 77 can facilitate the return of the slide 72 to the front end after the threshold is passed.

[0041] Furthermore, an L-shaped limit block 9 is provided on the front side of the front wheel support leg 31 and the rear side of the rear wheel support leg 32. The L-shaped limit block 9 is fixed to the bottom frame 1. The front wheel support leg 31 and the rear wheel support leg 32 are arranged between the L-shaped limit block 9 and the bottom frame 1.

[0042] The “L”-shaped limiting block 9 can limit the resetting of the supporting leg 3 and, on the other hand, can stabilize the supporting leg 3 after resetting.

[0043] Furthermore, limiting strips 78 are provided on both sides of the slide 72, and the thickness of the front end of the limiting strip 78 is smaller than the thickness of the rear end.

[0044] The limiting strip 78 can ensure that the slide 72 can abut against the threshold when the dining car passes the threshold.

[0045] Furthermore, the support leg 3 is provided with a sleeve rod 33, an insert rod 34, a limit cap 35 and a spring 36. An adjustment hole 37 is provided on one side of the sleeve rod 33, a mounting hole 38 is provided on one side of the insert rod 34, the limit cap 35 is arranged in the mounting hole 38, and the rear edge of the limit cap 35 is larger than the diameter of the mounting hole 38, and the spring 36 is arranged between the mounting hole 38 and the limiter. The sleeve rod 33 is hinged to the bottom frame 1 or the wheel 4, and the insert rod 34 is hinged to the wheel 4 or the bottom frame 1.

[0046] The height of the support leg 3 can be adjusted to adapt to the height of different thresholds, ensuring that the slide 72 is in contact with the threshold to play a transition role.

[0047] Furthermore, at least the front wheel 4 of the wheel 4 is a universal wheel, and the universal wheel is a universal wheel with a brake.

[0048] The universal wheels make it easy to control the steering of the dining car, and the brakes can ensure the stability of the dining car when it is parked.

[0049] When in use, the dining trolley is pushed to the threshold, the sliding assembly 7 is first supported with the threshold, the first detent pin 54 is moved, the lever 52 can be rotated, the lever 52 drives the first U-shaped frame 51 to rotate through the first connecting rod 53, and the front wheel supporting leg 31 also rotates, so that the front wheel supporting leg 31 and the wheel 4 are turned to the same level as the bottom frame 1, that is, the front wheel supporting leg 31 is retracted through the front wheel recovery assembly 5, and then the dining trolley is moved forward through the sliding assembly 7. After the front wheel passes the threshold, the lever 52 is reversely operated to reset its front wheel recovery assembly 5, and then the first detent pin 54 is rotated to the limit plate 55 to lock the lever 52; then Then, the dining cart is moved forward by the sliding assembly 7. When the dining cart has passed about halfway, the second detent pin 64 is pushed, and then the second U-shaped frame 61 is pressed down and rotated, and the linkage rod 63 is driven by the second connecting rod 62. The linkage rod 63 drives the rear wheel support leg 32 to rotate, and the rear wheel support leg 32 and the wheel 4 are turned to the same horizontal position as the bottom frame 1, that is, the rear wheel support leg 32 is retracted by the rear wheel recovery assembly 6, and then the dining cart is continued to be moved forward by the sliding assembly 7. After the rear wheel passes through the threshold, the second U-shaped frame 61 is refurbished to reset the rear wheel recovery assembly 6. After the reset is completed, the second U-shaped frame 61 is locked by pushing the second detent pin 64.

[0050] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A dining car that facilitates threshold passage, characterized in that: It includes a bottom frame, a fixed frame, support legs, wheels, a front wheel recovery assembly, a rear wheel recovery assembly, a sliding assembly and a dining car cabinet, the fixed frame is arranged at the front end of the bottom frame, the support legs are respectively hinged to the front and rear sides of the bottom frame, and the wheels are arranged at the lower ends of the support legs; the front wheel recovery assembly is hinged to the front wheel support legs, the bottom frame and the fixed frame, and is rotated toward the bottom frame for recovery; the rear wheel recovery assembly is hinged to the rear wheel support legs and the bottom frame, and is rotated toward the bottom frame for recovery; the sliding assembly is arranged on the bottom surface of the bottom frame, and the dining car cabinet is arranged on the bottom frame.

2. A dining car that facilitates threshold passage according to claim 1, characterized in that: The front wheel recovery assembly is provided with a first U-shaped frame, a shift rod, a first connecting rod, a first shift pin and a limit plate, the first U-shaped frame is arranged on the side of the fixed frame, and the open ends are respectively fixedly connected to the upper ends of the front wheel support legs; the upper and lower parts of the fixed frame are respectively provided with an upper cross bar and a lower cross bar, one end of the shift rod is hinged to the middle part of the lower cross bar, one end of the first connecting rod is hinged to the upper part of the shift rod, and the other end is hinged to the middle part of the first U-shaped frame, the first shift pin is arranged on one side of the shift rod and is hinged to the upper cross bar, the limit plate is fixed to the other side of the shift rod and is fixed to the upper cross bar, and the upper end of the shift rod is limited within the first shift pin and the limit plate.

3. A dining car that facilitates threshold passage according to claim 1, characterized in that: The rear wheel recovery assembly is provided with a second U-shaped frame, a second connecting rod, a linkage rod and a second detent pin. The second U-shaped frame is arranged on the side of the fixed frame, and the cross bar end is located on the front upper side of the fixed frame, and the open end is hinged to the middle of both sides of the bottom frame. One end of the second connecting rod is fixedly connected to the open end of the second U-shaped frame, one end of the linkage rod is hinged to the other end of the second connecting rod, and the other end is hinged to the middle of the rear wheel supporting leg. The middle part of the second detent pin is hinged to the upper end of the fixed frame, and the cross bar of the second U-shaped frame is limited between the second detent pin and the fixed frame.

4. A dining car that facilitates threshold passage according to claim 2, characterized in that: The connection angles between the first U-shaped frame and the front wheel support leg, and between the second U-shaped frame and the second connecting rod are obtuse angles.

5. The dining car that facilitates threshold passage according to claim 1, characterized in that: The sliding assembly is provided with a slide rail, a slide frame, a pulley and a support. The slide rail is fixed to the bottom surface of the bottom frame. The slide rail is provided with a T-shaped slide groove. The slide frame is provided with a support at least at four corners. The support is provided with a pulley, and the pulley is arranged in the T-shaped slide groove.

6. A dining car that facilitates threshold passage according to claim 5, characterized in that: The slide is provided with a pull rope or a tension spring connected to the front end of the bottom frame.

7. A dining car that facilitates threshold passage according to claim 1 or 2, characterized in that: An "L"-shaped limit block is provided on the front side of the front wheel support leg and the rear side of the rear wheel support leg. The "L"-shaped limit block is fixed to the bottom frame, and the front wheel support leg and the rear wheel support leg are arranged between the "L"-shaped limit block and the bottom frame.

8. The dining car that facilitates threshold passage according to claim 5, characterized in that: Limiting strips are arranged on both sides of the slide, and the thickness of the front end of the limiting strip is smaller than the thickness of the rear end.

9. The dining car that facilitates threshold passage according to claim 1, characterized in that: The supporting leg is provided with a sleeve rod, an insertion rod, a limiting cap and a spring. An adjustment hole is provided on one side of the sleeve rod, and a mounting hole is provided on one side of the insertion rod. The limiting cap is arranged in the mounting hole, and the rear end edge of the limiting cap is larger than the diameter of the mounting hole. The spring is arranged between the mounting hole and the limiting inner.

10. The dining car that facilitates threshold passage according to claim 1, characterized in that: At least the front wheel of the wheel is a universal wheel, and the universal wheel is a universal wheel with brake.

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