Kindergarten dining car

Abstract

The utility model discloses a kindergarten dining car which comprises a heat preservation box and a containing box arranged on a mounting frame, and further comprises an adjusting assembly arranged on the mounting frame and used for adjusting the height of the heat preservation box, and the adjusting assembly comprises four first square adjusting pipes which are fixedly connected to the side, close to the heat preservation box, of the mounting frame and are symmetrically arranged in pairs; the four first square adjusting pipes are slidably connected with second square adjusting pipes, one ends of the four second square adjusting pipes are connected with the heat preservation box, and the ends, located in the first square adjusting pipes, of the four second square adjusting pipes are fixedly connected with adjusting plates. According to the dining car, through the arrangement of the adjusting assembly, the height of the dining car is adjusted, and meanwhile under the cooperation effect of the connecting assembly and the extrusion assembly, it is difficult for an infant to rotate the rotating handle under the condition that the rotating handle is pushed.

Description

Technical Field

[0001] This utility model belongs to the field of kindergarten food cart technology, specifically, it relates to kindergarten food carts. Background Technology

[0002] A kindergarten food cart is a small transport vehicle specifically designed for kindergarten catering services. Its main purpose is to safely and efficiently deliver cooked food from the kitchen to classrooms or the dining area for children to eat. Existing kindergarten food carts, designed to accommodate children in different age groups (small, medium, and large), often incorporate a height adjustment function to accommodate varying environments. While this height adjustment is convenient, it can also lead to children turning the handle out of curiosity. This sudden rise or fall could cause bowls and plates placed on the edge of the cart to wobble and fall, increasing the safety risks associated with using kindergarten food carts.

[0003] In view of this, this utility model is proposed. Utility Model Content

[0004] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0005] A kindergarten food cart includes an insulated box and a placement box set in a mounting frame. The mounting frame has four universal locking wheels arranged symmetrically in pairs on the side away from the insulated box. The insulated box has a push handle on one side. The cart also includes an adjustment component set in the mounting frame for adjusting the height of the insulated box.

[0006] The adjustment assembly includes four first square adjustment tubes that are fixedly connected to the side of the mounting frame near the insulation box and arranged symmetrically in pairs. The four first square adjustment tubes are slidably connected to second square adjustment tubes. One end of the four second square adjustment tubes is connected to the insulation box. One end of the four second square adjustment tubes located inside the first square adjustment tubes is fixedly connected to an adjustment plate. The four first square adjustment tubes are provided with a drive assembly for driving the second square adjustment tubes.

[0007] The drive assembly includes threaded rods rotatably connected to four first square adjusting tubes, four adjusting plates threadedly connected to the threaded rods, a worm gear fixedly connected to one side wall of each of the four threaded rods, a drive rod rotatably connected to one of the four first square adjusting tubes, a worm gear connected to the side wall of the drive rod located inside the first square adjusting tube, the worm gear and the worm gear meshing with each other, a rotating handle connected to one end of the drive rod located on the outer side wall of the first square adjusting tube via a connecting assembly, and a linkage assembly for synchronously rotating the four threaded rods provided in the mounting frame.

[0008] The linkage assembly includes four rotating rods rotatably connected to the mounting frame. One end of each of the four rotating rods is connected to one of the four threaded rods. A sprocket is fixedly connected to the side wall of each of the four rotating rods, and the four sprockets are connected to each other by a chain.

[0009] The connecting assembly includes a connecting cavity formed in the drive rod, a spline plate slidably connected to the connecting cavity, a spline hole formed on the bottom wall of the connecting cavity near the worm gear, the spline hole being matched with the spline plate, the spline hole being provided with a pressing assembly for pressing the spline plate, and the side of the spline plate away from the worm gear being connected to the rotating handle via a connecting rod.

[0010] The extrusion assembly includes an extrusion spring fixedly connected to the bottom wall of the spline hole, and a rotating ring connected to the other end of the extrusion spring. The side of the rotating ring away from the extrusion spring is rotatably connected to the spline plate.

[0011] The insulated box has placement plates hinged to its two opposite side walls.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] This invention, through the adjustment of the components, achieves height adjustment of the dining cart through the combined action of the drive and linkage components. Simultaneously, the combined action of the connecting and pressing components ensures convenient height adjustment while making it difficult for young children to turn the cart while pushing the handle. This reduces the risk of bowls and plates placed on the edge of the cart shaking and falling due to sudden height changes during use, thus further improving the safety of the dining cart during use.

[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the adjustment component of this utility model;

[0018] Figure 3 This is a schematic diagram of the unfolded structure of the placement plate of this utility model;

[0019] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 5 This is a schematic diagram of the internal structure of the connecting component of this utility model;

[0021] Figure 6 This is a schematic diagram of the internal structure of the linkage component of this utility model.

[0022] In the diagram: 101, Insulation box; 102, Mounting frame; 103, Placement box; 104, Universal locking wheel; 105, Push handle; 106, Placement plate; 201, First square adjusting tube; 202, Second square adjusting tube; 203, Adjusting plate; 301, Threaded rod; 302, Worm gear; 303, Drive rod; 304, Worm; 305, Rotating handle; 401, Rotating rod; 402, Sprocket; 403, Chain; 501, Connecting cavity; 502, Splined plate; 503, Splined hole; 601, Compression spring; 602, Rotating ring. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0024] Example 1

[0025] Please see Figures 1-6 The kindergarten food cart shown in the figure includes an insulated box 101 and a placement box 103 set in the mounting frame 102. The mounting frame 102 is provided with four universal locking wheels 104 arranged symmetrically in pairs on the side away from the insulated box 101. A push handle 105 is provided on one side of the insulated box 101. It also includes an adjustment component set in the mounting frame 102 for adjusting the height of the insulated box 101.

[0026] The adjustment assembly includes four first square adjustment tubes 201 arranged symmetrically in pairs and fixedly connected to the side of the mounting frame 102 near the heat preservation box 101. The four first square adjustment tubes 201 are slidably connected to second square adjustment tubes 202. One end of the four second square adjustment tubes 202 is connected to the heat preservation box 101. One end of the four second square adjustment tubes 202 located inside the first square adjustment tubes 201 is fixedly connected to an adjustment plate 203. The four first square adjustment tubes 201 are provided with a drive assembly for driving the second square adjustment tubes 202.

[0027] It should be noted that by adjusting the component settings, the height of the food cart can be adjusted through the combined action of the drive and linkage components. At the same time, through the combined action of the connecting and squeezing components, while ensuring the convenience of adjusting the height of the food cart, it makes it difficult for young children to turn the cart while pushing the handle 305. This reduces the risk of bowls and plates placed on the edge of the cart shaking and falling due to sudden raising or lowering during use, thereby further improving the safety of the food cart during use.

[0028] Please see Figure 2 and Figure 4 The driving assembly shown in the figure includes threaded rods 301 rotatably connected to four first square adjusting tubes 201, four adjusting plates 203 threadedly connected to the threaded rods 301, a worm gear 302 fixedly connected to one side wall of the four threaded rods 301, a driving rod 303 rotatably connected to one of the four first square adjusting tubes 201, a worm 304 connected to the side wall of the driving rod 303 located inside the first square adjusting tube 201, the worm 304 and the worm gear 302 meshing with each other, and a rotating handle 305 connected to one end of the driving rod 303 located on the outer side wall of the first square adjusting tube 201 through a connecting assembly. The mounting frame 102 is provided with a linkage assembly for synchronously rotating the four threaded rods 301.

[0029] It should be noted here that the driving component is configured to move the second square adjusting tube 202.

[0030] Please see Figure 6 The linkage component shown in the figure includes four rotating rods 401 rotatably connected to the mounting frame 102. One end of each of the four rotating rods 401 is connected to one of the four threaded rods 301. A sprocket 402 is fixedly connected to the side wall of each of the four rotating rods 401. The four sprockets 402 are connected to each other by a chain 403.

[0031] It should be noted here that the linkage component is used to make the four threaded rods 301 rotate synchronously.

[0032] Please see Figure 5The connecting assembly shown in the figure includes a connecting cavity 501 opened in the drive rod 303. A spline plate 502 is slidably connected to the connecting cavity 501. A spline hole 503 is opened on the bottom wall of the connecting cavity 501 near the worm 304. The spline hole 503 is matched with the spline plate 502. The spline hole 503 is provided with a pressing assembly for pressing the spline plate 502. The side of the spline plate 502 away from the worm 304 is connected to the rotating handle 305 through a connecting rod.

[0033] It should be noted here that the connection components are designed to allow the rotary handle 305 to be detachably connected to the drive rod 303.

[0034] A further improvement is that the mounting frame 102 is equipped with an adjustment device for adjusting the tension of the chain 403. This is a widely used prior art and is not shown here.

[0035] Please see Figure 5 The extrusion assembly shown in the figure includes an extrusion spring 601 fixedly connected to the bottom wall of the spline hole 503. The other end of the extrusion spring 601 is connected to a rotating ring 602. The side of the rotating ring 602 away from the extrusion spring 601 is rotatably connected to the spline plate 502.

[0036] It should be noted here that by setting up the squeezing component, while separating the rotating handle 305 from the drive rod 303 when not in use, the resistance to use of the rotating handle 305 during use is increased.

[0037] It is worth noting that a spring with a slightly larger elastic coefficient can be used to increase the resistance to the rotating handle 305.

[0038] Working principle: When using this kindergarten food cart, first place the food tray in the insulated box 101, and place the children's bowls and plates on the placement board 106. Hot water can be filled into the insulated box 101 to keep the food warm. After the food and bowls and plates are placed, the cart can be moved to each classroom or dining room by pushing the push handle 105 and using the universal locking wheels 104. After the cart is moved to its destination, the universal locking wheels 104 can be used to lock the cart.

[0039] After the food cart is fixed in place, the bowls and plates can be placed on the placement plates 106 by unfolding the two sides, so that food can be served. After the food is served into the bowls and plates, the children can pick up the bowls and plates to eat. Since there are differences in height between children in the small, middle and large classes, the height of the insulated box 101 can be adjusted to make it easier for children to pick up the bowls and plates and serve food independently. In the process of adjusting the height of the insulated box 101, first, you need to hold the rotating handle 305 and push it close to the first square adjusting tube 201. In the process of moving the rotating handle 305 close to the first square adjusting tube 201, you need to push the spline plate 502 into the spline hole 503 while overcoming the elastic force of the compression spring 601. And while maintaining the pushing force on the rotating handle 305, the rotating handle 305 is rotated.

[0040] During the rotation of handle 305, the worm 304 at one end of drive rod 303 will rotate. Then, under the meshing transmission action of worm 304 and worm wheel 302, the threaded rod 301 will rotate. During the rotation of threaded rod 301, the linkage assembly will drive the other three threaded rods 301 to rotate synchronously. Then, under the threaded meshing transmission between threaded rod 301 and adjusting plate 203, and the guiding action of the first square adjusting tube 201 and adjusting plate 203, the second square adjusting tube 202 will move, thereby achieving height adjustment of the insulated box 101, adapting to the use of children of different heights in kindergarten, preschool, and high school. Furthermore, after the height of the insulated box 101 is adjusted... Releasing the push on the rotating handle 305 will cause the spline plate 502 to separate from the spline hole 503 under the elastic force of the compression spring 601, thereby breaking the connection between the rotating handle 305 and the drive rod 303. This makes it difficult for children to adjust the height of the insulated box 101 by rotating the rotating handle 305, even if driven by curiosity. Furthermore, the elastic resistance of the compression spring 601 makes it difficult for children to rotate the rotating handle 305 while pushing it. This reduces the risk of bowls and plates placed on the edge of the food cart shaking and falling due to sudden lifting during use, thus further improving the safety of the food cart during use.

[0041] Example 2

[0042] Please see Figure 3 This embodiment further illustrates Example 1, in which two opposite side walls of the heat preservation box 101 in the figure are hinged with placement plates 106;

[0043] It should be noted that the placement plates 106, which are hinged to the two side walls of the insulated box 101, can be used to place bowls and plates on the placement plates 106 when children are serving food to themselves or when teachers are serving food to children, thereby improving the convenience of food retrieval. At the same time, a support plate (not shown in the figure here) is hinged to the side wall of the insulated box 101 near the two placement plates 106 to support the placement plates 106 when they are unfolded, thereby ensuring the stability of the placement plates 106 when unfolded.

Claims

1. Kindergarten food cart, including: The system comprises an insulated box (101) and a placement box (103) mounted on a mounting frame (102). The mounting frame (102) has four symmetrically arranged universal locking wheels (104) on one side away from the insulated box (101), and a push handle (105) on one side of the insulated box (101). The system is characterized by further comprising an adjustment component mounted on the mounting frame (102) for adjusting the height of the insulated box (101). The adjustment component includes four... Four first square regulating tubes (201) are arranged symmetrically in pairs. Four first square regulating tubes (201) are slidably connected to second square regulating tubes (202). One end of the four second square regulating tubes (202) is connected to the heat preservation box (101). One end of the four second square regulating tubes (202) located inside the first square regulating tubes (201) is fixedly connected to an regulating plate (203). The four first square regulating tubes (201) are provided with a driving component for driving the second square regulating tubes (202).

2. The kindergarten food cart according to claim 1, characterized in that, The drive assembly includes threaded rods (301) rotatably connected to four first square adjusting tubes (201), four adjusting plates (203) threadedly connected to the threaded rods (301), a worm gear (302) fixedly connected to one side wall of one of the four threaded rods (301), a drive rod (303) rotatably connected to one of the four first square adjusting tubes (201), a worm (304) connected to the side wall of the drive rod (303) located inside the first square adjusting tube (201), the worm (304) meshing with the worm gear (302), and a rotating handle (305) connected to one end of the drive rod (303) located on the outer side wall of the first square adjusting tube (201) via a connecting assembly. The mounting frame (102) is provided with a linkage assembly for synchronously rotating the four threaded rods (301).

3. The kindergarten food cart according to claim 2, characterized in that, The linkage assembly includes four rotating rods (401) rotatably connected to the mounting frame (102). One end of each of the four rotating rods (401) is connected to one of the four threaded rods (301). A sprocket (402) is fixedly connected to the side wall of each of the four rotating rods (401). The four sprockets (402) are connected to each other by a chain (403).

4. The kindergarten food cart according to claim 3, characterized in that, The connecting assembly includes a connecting cavity (501) opened in the drive rod (303), a spline plate (502) is slidably connected to the connecting cavity (501), a spline hole (503) is opened on the bottom wall of the connecting cavity (501) near the worm (304), the spline hole (503) is matched with the spline plate (502), the spline hole (503) is provided with a pressing assembly for pressing the spline plate (502), and the side of the spline plate (502) away from the worm (304) is connected to the rotating handle (305) through a connecting rod.

5. The kindergarten food cart according to claim 4, characterized in that, The extrusion assembly includes an extrusion spring (601) fixedly connected to the bottom wall of the spline hole (503). The other end of the extrusion spring (601) is connected to a rotating ring (602). The side of the rotating ring (602) away from the extrusion spring (601) is rotatably connected to the spline plate (502).

6. The kindergarten food cart according to claim 1, characterized in that, The insulation box (101) has two opposite side walls hinged with placement plates (106).

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