CN112619173B

CN112619173B - Children's dodgem

Info

Publication number: CN112619173B
Application number: CN202011639833.4A
Authority: CN
Inventors: 钭子奇
Original assignee: Zhejiang Qunying Vehicles Co Ltd
Current assignee: Zhejiang Qunying Vehicles Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-05-03
Anticipated expiration: 2040-12-31
Also published as: CN112619173A

Abstract

The invention relates to the field of children toys, in particular to a children bumper car. A children's dodgem comprises a frame, a walking assembly and a controller, wherein the walking assembly comprises two groups of driving wheel assemblies and a plurality of groups of universal wheel assemblies; the driving wheel assembly can be completely accommodated in the frame; a sitting cabin is arranged at the upper end of the frame, a backrest accommodating cavity is arranged behind the sitting cabin, a backrest is arranged on the backrest accommodating cavity, and the backrest can be detached or can be accommodated in the frame; the front ends of the two sides of the sitting cabin are provided with controller accommodating cavities, the controllers are arranged in the controller accommodating cavities, the inner walls of the two sides of the controller accommodating cavities are hinged, and the controllers can be rotatably received into the controller accommodating cavities. The longitudinal size of the collision is greatly reduced by the scheme, so that the collision is convenient to store and can be plugged into a gap between a bed bottom and a storage room.

Description

Children's dodgem

Technical Field

The invention relates to the field of children toys, in particular to a children bumper car.

Background

Toys play a great role in the process of children recognizing the surrounding world. The toy attracts the curiosity and attention of children with bright color, beautiful and fantastic shape, smart activity, pleasant sound and the like. The toy is a specific actual object, is similar to a real object image, and can meet the desires of children for manually operating and manipulating the fidgeted object. The toys are various in types and diversified in playing methods, can arouse the interest of the children, can arouse the desire of the children to play games, are textbooks for the children to learn and are good partners for the children to enjoy.

The toy can be freely manipulated, operated and operated for infants, conforms to the psychological hobbies and ability level of the infants, can meet the needs of the activities of the infants, and improves the activity enthusiasm. For example, in a bumper car toy, children can naturally climb up and jump, and grab the handle to swing vigorously, so that the requirements of the children on activities are met, and the children can generate positive and pleasant emotions, and thus the children can play for a long time without being tired. Furthermore, by improving the cognition and understanding of the children on the structure of trains, automobiles and various toys, the assembly, traction and arrangement capabilities of the children are trained on some basis, and the practical awareness and the life self-care capability are improved.

However, children like toys, but parents are very worried about them because the toys are highly updated at home and piled up like a mountain, which makes it difficult to manage, especially big toys such as trains and cars.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a bumper car for children, which is convenient to store and manage on the premise of integrating the factors of interest, entertainment, safety, etc., and prevents the large-sized toys of children from crowding at home; after the bumper car is folded, the height of the bumper car is only half of the original height.

In order to achieve the purpose, the invention adopts the following technical scheme: the walking mechanism comprises a frame, a walking assembly and a controller, wherein the walking assembly comprises two groups of driving wheel assemblies and a plurality of groups of universal wheel assemblies; an adjusting sheet is movably arranged in the frame, a bent rail is vertically arranged on the adjusting sheet, and two clamping openings are formed at the upper end and the lower end of the bent rail; the two groups of driving wheel assemblies are connected through a wheel shaft, and the wheel shaft penetrates through the bent track of the adjusting sheet; when the wheel shaft is positioned in the upper nip, the driving wheel assembly is completely accommodated in the frame; when the wheel shaft is positioned in the lower clamping opening, the driving wheel of the driving wheel assembly extends out of the lower end face of the frame; a sitting cabin is arranged at the upper end of the frame, a backrest accommodating cavity is arranged behind the sitting cabin, a backrest is arranged on the backrest accommodating cavity, the backrest accommodating cavity is communicated with the inner cavity of the frame, and the backrest can be detached or can be retracted into the frame; the front ends of the two sides of the sitting cabin are provided with controller accommodating cavities, the controllers are arranged in the controller accommodating cavities, the inner walls of the two sides of the controller accommodating cavities are hinged, and the controllers can be rotatably received into the controller accommodating cavities. In the technical scheme, the driving wheel can be accommodated in the frame through the wheel shaft and the adjusting sheet, and the controller and the backrest can rotate to the inside of the frame in a buckling and hinging mode; in addition, the backrest also has a detachable plug-in mode which can be taken out from the upper end of the frame; the longitudinal size of the collision is greatly reduced by the scheme, so that the collision is convenient to store and can be plugged into a gap between a bed bottom and a storage room.

Preferably, a fixed frame is arranged in the frame, and the adjusting sheet and the driving wheel assembly are rotationally arranged on the fixed frame; the driving wheel assembly comprises a driving wheel, a transmission case and a motor, and the motor is connected with the driving wheel through the transmission case; the fixing frame is fixedly arranged on the lower end face of the frame, the driving wheels are respectively arranged on the outer sides of the two ends of the middle of the fixing frame, the transmission box is positioned on the outer sides of the two ends of the middle of the fixing frame and on the inner sides of the driving wheels, and the adjusting sheets are arranged on the inner sides of the two ends of the middle of the fixing frame; one end of the motor is embedded at the end part of the transmission case, and the other end of the motor is rotatably arranged in the hoop on the upper end surface of the fixed frame; the universal wheel assemblies comprise two universal wheels, and the two universal wheels are fixedly arranged on the left side and the right side of the fixing frame and are arranged in a cross shape with the two driving wheels. In the technical scheme, the structure and the position relation of each part of the driving wheel assembly and the plurality of groups of universal wheel assemblies, and the adjusting sheet and the driving wheel assembly are rotationally arranged on the fixed frame so as to realize the premise of folding the driving wheels; here, the gear box, the driving wheel are rotated around the motor, and the wheel shaft is moved in the curved track of the adjustment flap.

Preferably, one end of the adjusting sheet is rotatably connected with the fixing frame through a screw, a square through hole is formed above the adjusting sheet, and a screw is arranged in the square through hole in a clamped mode and is rotatably connected with the fixing frame; the end side of the adjusting sheet is provided with a clamping hook, a spring is connected to the clamping hook, one end of the spring is connected with the clamping hook, and the other end of the spring is connected with the bottom surface of the fixing frame; the middle two sides of the fixing frame are provided with bent metal tubes which push the adjusting sheets, the wheel shaft is separated from the upper end clamping opening and sinks to the lower end of the bent track, and the wheel shaft is clamped into the lower end clamping opening through the reaction force of the spring. In the technical scheme, when the adjusting sheet is pushed, the adjusting sheet rotates around a screw, the square through hole is used for enabling the adjusting sheet to generate slight displacement in the horizontal direction, the spring provides a counterforce to enable the wheel shaft to be clamped into the other clamping opening from the track, and the metal pipe is bent to avoid the wheel shaft when the driving wheel is folded.

Preferably, the backrest is detachable: the front ends of the two sides of the backrest extend into the inner cavity of the frame and are hinged with the inner cavity wall, and the backrest can be rotatably retracted into the frame; the backrest is provided with a handle, and the backrest can extend out of the inner cavity of the frame and be fixed by pulling the handle upwards.

Preferably, a clamping hole is formed in the rear wall of the backrest accommodating cavity, a buckle is arranged at the lower end of the rear side of the backrest, when the buckle is pressed, the backrest can be rotated into the frame by pressing the backrest downwards, and the backrest accommodating cavity can be fixed by upwards pulling the lifting handle; the front end of the backrest is respectively provided with a rotating shaft in a penetrating way, the extending parts of the two ends of the outer side of the upper part of the sitting cabin and the two ends of the inner wall of the frame are respectively provided with a bracket, and the brackets are used for fixing the two ends of the rotating shaft. In the technical scheme, two sides of the front end of a backrest extend into the frame and are hinged with the inner wall through a rotating shaft, and specifically, brackets are arranged on the inner wall and used for clamping two sides of the rotating shaft; the back side of the backrest is fixed or separated with the frame in a buckling mode, so that the backrest can be rotatably accommodated into the frame along the rotating shaft.

Preferably, a strip-shaped groove is formed in the outer side of the rear end above the sitting cabin, a clamping strip is arranged on the edge of the lower end of the front face of the backrest, and when the backrest rotates along the rotating shaft, the clamping strip abuts against the strip-shaped groove to rotate; the lower end of the front side of the backrest is provided with a safety belt fixing hole; the handle is a safety belt which is arranged in the safety belt fixing hole in a penetrating mode. According to the technical scheme, after the backrest is rotatably collected into the frame, no force application point can reset the backrest, and the front surface of the backrest is provided with the safety belt fixing hole provided with the safety belt, so that the safety belt can be lifted and pulled to reset.

Preferably, the backrest is detachable: a square hole is formed in the side wall at the rear of the backrest accommodating cavity; the lower end of the back of the backrest is provided with a clamping hook, the front ends of the two sides of the backrest respectively extend into the inner cavity of the frame, and the clamping hook is embedded into the square hole; the side of the upper end of the clamping hook is connected with a pressing part, when the pressing part is pressed down, the clamping hook is popped out from the square hole, and the backrest is pulled out of the backrest accommodating cavity backwards.

Preferably, the front ends of the two sides of the backrest are respectively provided with a tongue part, the inner bottom surfaces of the two sides of the upper end of the inner cavity of the frame are provided with bayonets, the tongue part extends into the inner cavity of the frame, and the front end is clamped into the bayonets; the front side and the rear side of the backrest are of a double-layer structure with layered heights, the clamping hook is arranged at the lower end of a low layer at the rear part, the lower end of the high layer is erected at the edge of the upper end of the backrest accommodating cavity, and the lower end of the low layer slides into the backrest accommodating cavity; the back holds the both sides front end in chamber and is equipped with the arch, the cavity both sides front end that the low aspect formed supports the arch. In the technical scheme, the backrest is detached in a plugging mode, the front end tongues on the two sides of the backrest are inserted into the frame, the rear side of the backrest is fixed or separated in a buckling mode, and the backrest can be lifted out from the upper end of the frame by pressing down the pressing part to lift the backrest backwards.

Preferably, through holes are formed in the inner walls of the two sides of the rear portion of the controller accommodating cavity, the controller comprises a control rod and a controller seat, a plurality of supporting blocks are arranged on the inner wall of the rear portion of the controller accommodating cavity, a round rod penetrates through the rear end of the controller seat, the round rod is erected on the supporting blocks, and the two ends of the round rod are embedded into the through holes.

Preferably, the lower end of the front side of the controller seat is provided with a long buckle and a short buckle in an adjacent manner; when the control rod is in an extending state, the lower end of the long buckle props against the edge of the lower end of the controller accommodating cavity, and the short buckle supports the edge of the upper end of the controller accommodating cavity; when the short buckle is pressed, the short buckle slides into the controller accommodating cavity from the edge of the upper end of the controller accommodating cavity, and the control rod and the controller seat can be accommodated into the controller accommodating cavity together by pressing the control rod downwards. Among this technical scheme, the rear end of controller stretches into in the frame through round bar and articulated with the frame inner wall, and the front end upper portion is erect at the controller and is held the chamber upper end edge through the buckle, presses the buckle, and the control lever of pushing down can be with in the controller income frame.

Drawings

Fig. 1 is a schematic perspective view of a bumper car for children.

Fig. 2 is a schematic view of a controller of a child bumper car.

Fig. 3 is a schematic view of a controller receiving cavity of a child bumper car.

Fig. 4 is a schematic view of a controller of a child bumper car in a collapsed state.

Fig. 5 is a schematic view of a child bumper car with the backrest removed.

Fig. 6 is a schematic view of a backrest of a child bumper car with the backrest detachable.

Fig. 7 is a perspective view of a child bumper car with a foldable backrest.

Fig. 8 is a schematic view of a bottom structure of a bumper car for children.

Fig. 9 is a schematic view of an internal structure of a child bumper car.

FIG. 10 is a schematic view of a fastening structure of a bumper car to a driving wheel assembly.

Fig. 11 is an internal structure view of a passenger compartment of a child bumper car.

Fig. 12 is a schematic view of a child bumper car with a foldable backrest.

Fig. 13 is an exploded view of a child bumper car with the back of the car collapsible.

Fig. 14 is a structural rear view of a child bumper car with the back of the car stowed.

Fig. 15 is a schematic view of the inner wall of the frame of the bumper car with the backrest foldable.

FIG. 16 is a diagram illustrating a quick release structure of a caster for a bumper car.

Fig. 17 is a schematic view of a collapsed position of the bumper car for a child.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

A children's dodgem as shown in fig. 1-17 comprises a frame 1, a walking assembly and a controller 10, wherein the walking assembly comprises two groups of driving wheel assemblies and a plurality of groups of universal wheel assemblies.

A fixed frame 11 and an adjusting sheet 2 are fixedly arranged in the frame 1, and the adjusting sheet 2 and the driving wheel assembly are both rotationally arranged on the fixed frame 11; the adjusting sheet 2 is vertically provided with a bent track 3, and two clamping openings 4 are formed at the upper end and the lower end of the bent track 3; the driving wheel assemblies are rotatably arranged in the frame 1, the two groups of driving wheel assemblies are connected through wheel shafts 5, and the wheel shafts 5 penetrate through the bent tracks 3 of the adjusting sheets 2.

The driving wheel assembly comprises a driving wheel 12, a transmission case 13 and a motor 14, and the motor 14 is connected with the driving wheel 12 through the transmission case 13; the fixed frame 11 is fixedly arranged on the lower end face of the frame 1, the driving wheels 12 are respectively arranged on the outer sides of the two ends of the middle of the fixed frame 11, the transmission case 13 is positioned on the outer sides of the two ends of the middle of the fixed frame 11, the inner sides of the driving wheels 12, and the adjusting pieces 2 are arranged on the inner sides of the two ends of the middle of the fixed frame 11; one end of the motor 14 is embedded in the end part of the transmission case 13, and the other end is rotatably arranged in a hoop 15 on the upper end surface of the fixed frame 11; the universal wheel assembly comprises two universal wheels 47, wherein the two universal wheels 47 are fixedly arranged on the left side and the right side of the fixing frame 11 and are arranged in a cross shape with the two driving wheels 12.

In addition, one end of the adjusting sheet 2 is rotatably connected with the fixed frame 11 through a screw, a square through hole 16 is arranged above the adjusting sheet 2, and a screw is arranged in the square through hole 16 in a clamping manner and is rotatably connected with the fixed frame 11; the end side of the adjusting sheet 2 is provided with a hook block, the hook block is connected with a spring 17, one end of the spring 17 is connected with the hook block, and the other end is connected with the bottom surface of the fixed frame 11; the middle two sides of the fixing frame 11 are provided with bent metal tubes to push the adjusting sheet 2, and the wheel shaft 5 is separated from the upper end clamping opening 4 and sinks to the lower end of the bent track 3 and is clamped into the lower end clamping opening 4 through the counterforce of the spring 17.

The technical scheme can be summarized as follows: when the wheel shaft 5 is positioned in the upper nip 4, the driving wheel assembly is completely accommodated in the frame 1; when the wheel shaft 5 is positioned in the lower clamping opening 4, the driving wheel 12 of the driving wheel assembly extends out of the lower end surface of the frame 1. In the technical scheme, when the adjusting sheet is pushed, the adjusting sheet rotates around a screw on the fixing frame, the transmission case and the driving wheel rotate around the motor, and the wheel shaft moves in the bent track of the adjusting sheet; the square through hole is used for enabling the adjusting sheet to generate slight displacement in the horizontal direction, the spring provides a counterforce to enable the wheel shaft to be clamped into the other clamping opening from the track, and the metal tube is bent to avoid the wheel shaft when the driving wheel is folded.

The cabin 6 is taken advantage of to frame 1 upper end being equipped with, and the rear of taking advantage of cabin 6 is equipped with the back and holds chamber 7, and the back holds and is equipped with back 8 on the chamber 7, and the back holds chamber 7 and frame 1 inner chamber intercommunication, and here arrangement back has two kinds of situations:

1. the backrest can be retracted into the frame 1: the front ends of the two sides of the backrest 8 extend into the inner cavity of the frame 1 and are hinged with the wall of the inner cavity, and the backrest 8 can be rotatably retracted into the frame 1; the backrest 8 is provided with a handle, and the handle is pulled upwards to enable the backrest 8 to extend out of the inner cavity of the frame 1 and be fixed. The method specifically comprises the following steps: the back wall of the back accommodating cavity 7 is provided with a clamping hole 18, the lower end of the back side of the back is provided with a buckle 19, the front end of the back 8 is respectively provided with a rotating shaft 20 in a penetrating way, and the extending parts of the two ends of the upper outer side of the sitting cabin 6 and the two ends of the inner wall of the frame 1 are respectively provided with a bracket 21 which is used for fixing the two ends of the rotating shaft 20. The outside of the rear end above the cabin is provided with a strip-shaped groove 22, and the edge of the lower end of the front surface of the backrest 8 is provided with a clamping strip 23. When the buckle 19 is pressed and pressed downwards to press the backrest, the backrest 8 rotates along the rotating shaft 20, the clamping strip 23 abuts against the strip-shaped groove 22 to rotate, and the backrest 8 can rotate into the frame 1; the lower end of the front face of the backrest 8 is provided with a safety belt fixing hole 24, the lifting handle is a safety belt which is arranged in the safety belt fixing hole 24 in a penetrating mode, and the backrest 8 and the backrest accommodating cavity 7 can be fixed through the buckle 19 by lifting the safety belt upwards.

2. The backrest is detachable: the front ends of two sides of the backrest 8 are respectively provided with a tongue part 27, the inner bottom surfaces of two sides of the upper end of the inner cavity of the frame 1 are provided with bayonets 28, the tongue part 27 extends into the inner cavity of the frame 1, and the front end is clamped into the bayonets 28; a square hole 25 is arranged on the rear side wall of the backrest accommodating cavity 7; the lower end of the back 8 is provided with a hook, the front side and the back side of the back 8 are of a double-layer structure with layered height, the hook 38 is arranged at the lower end of the lower layer 29 at the back, the lower end of the upper layer 30 is erected at the upper end edge of the back accommodating cavity 7, and the lower end of the lower layer 29 slides into the back accommodating cavity 7; the front ends of the two sides of the backrest accommodating cavity 7 are provided with bulges, and the front ends of the two sides of the cavity formed by the low layer surface 29 are propped against the bulges. The hook 38 is embedded into the square hole 25, the pressing part 26 is connected to the upper end side of the hook 38, and when the pressing part 26 is pressed down, the hook pops out from the square hole 25, and the backrest 8 is pulled out of the backrest accommodating cavity 7 backwards.

The front ends of two sides of the sitting cabin 6 are provided with controller accommodating cavities 9, the controller 10 is arranged in the controller accommodating cavities 9, the controller 10 is hinged with the inner walls of two sides of the controller accommodating cavities 9, and the controller 10 can be rotatably received into the controller accommodating cavities 9. Specifically, through holes are formed in the inner walls of the two sides of the rear portion of the controller accommodating cavity 9, the controller 10 comprises a control rod 36 and a controller seat 37, a plurality of supporting blocks 31 are arranged on the inner wall of the rear portion of the controller accommodating cavity 9, a round rod 33 penetrates through the rear end of the controller seat 37, the round rod 33 is erected on the supporting blocks 31, and the two ends of the round rod are embedded into the through holes. The lower end of the front side of the controller seat 37 is provided with a long buckle 34 and a short buckle 35 in an abutting mode; when the control rod 36 is in an extending state, the lower end of the long buckle props against the edge of the lower end of the controller accommodating cavity 9, and the short buckle supports the edge of the upper end of the controller accommodating cavity; when the short buckle is pressed, the short buckle slides into the controller accommodating cavity from the edge of the upper end of the controller accommodating cavity, and the control rod and the controller seat can be accommodated into the controller accommodating cavity together by pressing the control rod downwards.

In addition, a control module 39, a battery module 40 and a speaker 41 are arranged in the passenger compartment; a switch, music selection and charging port panel 42 is arranged on the outer side surface of the sitting cabin; a footrest is arranged below the side surface of the sitting cabin, and the upper end surface of the sitting cabin and the upper end surface of the footrest are honeycomb surfaces. The frame includes shell and bottom plate 43, and the inboard radial a plurality of lugs 44 that are equipped with of shell lower extreme, bottom plate frame are on lug 44, and the intermediate position is connected bottom two pieces of screws and shell. Frame lower extreme edge is radially equipped with crashproof foam 45, and crashproof foam 45's top is equipped with many LED lamp area dustcoats 46.

In this embodiment, a younger child can control the dodgem through the external remote controller; children with a little older age can drive the bumper car by operating the control rod; because the circuit module is arranged below the controller, the motor can be controlled to drive the driving wheels at the two sides. When the bumper car is folded, the backrest can be detached or rotated into the car frame by pressing the hook on the rear side above the car frame; the controller can be rotated into the frame by pressing the buckle below the front end of the controller; then the bumper car is turned over, the adjusting sheet is pushed, the wheel shaft slides into the upper clamping opening, and the driving wheel is collected into the frame; it should be noted here that the universal wheel is a quick-release structure, a wheel seat hole is formed in the fixing frame, an elastic clamp hole is formed in the upper end of the wheel seat hole, and the universal wheel can be quickly inserted into and pulled out of the elastic clamp hole.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims

1. The utility model provides a children's dodgem, includes frame (1), walking subassembly and controller (10), its characterized in that: the walking assembly comprises two groups of driving wheel assemblies and a plurality of groups of universal wheel assemblies; an adjusting sheet (2) is movably arranged in the frame (1), a bent rail (3) is vertically arranged on the adjusting sheet (2), and two clamping openings (4) are formed at the upper end and the lower end of the bent rail (3); the driving wheel assemblies are rotatably arranged in the frame (1), the two groups of driving wheel assemblies are connected through wheel shafts (5), and the wheel shafts (5) penetrate through the bent tracks (3) of the adjusting sheets (2); when the wheel shaft (5) is positioned in the upper clamping opening (4), the driving wheel assembly is completely accommodated in the frame (1); when the wheel shaft (5) is positioned in the lower clamping opening (4), a driving wheel (12) of the driving wheel assembly extends out of the lower end face of the frame (1); a sitting cabin (6) is arranged at the upper end of the frame (1), a backrest accommodating cavity (7) is arranged behind the sitting cabin (6), a backrest (8) is arranged on the backrest accommodating cavity (7), the backrest accommodating cavity (7) is communicated with the inner cavity of the frame (1), and the backrest (8) can be detached or can be retracted into the frame (1); the front ends of two sides of the sitting cabin (6) are provided with controller accommodating cavities (9), the controller (10) is arranged in the controller accommodating cavities (9), the inner walls of two sides of the controller accommodating cavities (9) are hinged to each other, and the controller (10) can be rotatably received into the controller accommodating cavities (9).

2. A child's dodgem according to claim 1, characterized in that: a fixed frame (11) is arranged in the frame (1), and the adjusting sheet (2) and the driving wheel assembly are rotationally arranged on the fixed frame (11); the driving wheel assembly comprises a driving wheel (12), a transmission case (13) and a motor (14), and the motor (14) is connected with the driving wheel (12) through the transmission case (13); the fixing frame (11) is fixedly arranged on the lower end face of the frame (1), the driving wheels (12) are respectively arranged on the outer sides of the two ends of the middle of the fixing frame (11), the transmission case (13) is positioned on the outer sides of the two ends of the middle of the fixing frame (11), the inner sides of the driving wheels (12) are arranged, and the adjusting sheet (2) is arranged on the inner sides of the two ends of the middle of the fixing frame (11); one end of the motor (14) is embedded in the end part of the transmission case (13), and the other end of the motor is rotatably arranged in a hoop (15) on the upper end surface of the fixed frame (11); the plurality of groups of universal wheel assemblies comprise two universal wheels (47), wherein the two universal wheels (47) are fixedly arranged on the left side and the right side of the fixing frame (11) and are arranged with the two driving wheels (12) in a cross shape.

3. A child's dodgem according to claim 2, characterized in that: one end of the adjusting sheet (2) is rotatably connected with the fixing frame (11) through a screw, a square through hole (16) is formed above the adjusting sheet (2), and a screw is arranged in the square through hole (16) in a clamping mode and is rotatably connected with the fixing frame (11); a hook block is arranged on the end side of the adjusting sheet (2), a spring (17) is connected to the hook block, one end of the spring (17) is connected with the hook block, and the other end of the spring is connected with the bottom surface of the fixing frame (11); the middle two sides of the fixing frame (11) are provided with bent metal tubes to push the adjusting sheet (2), the wheel shaft (5) is separated from the upper end clamping opening (4) and sinks to the lower end of the bent track (3), and the wheel shaft is clamped into the lower end clamping opening (4) through the reaction force of the spring (17).

4. A child's dodgem according to claim 1, characterized in that: the backrest (8) can be retracted into the frame (1): the front ends of the two sides of the backrest (8) extend into the inner cavity of the frame (1) and are hinged with the wall of the inner cavity, and the backrest (8) can be rotatably collected into the frame (1); the backrest (8) is provided with a handle, and the backrest (8) can extend out of the inner cavity of the frame (1) and be fixed by pulling the handle upwards.

5. A child's dodgem according to claim 4, characterized in that: a clamping hole (18) is formed in the rear wall of the backrest accommodating cavity (7), a buckle (19) is arranged at the lower end of the rear side of the backrest (8), when the buckle (19) is pressed, the backrest (8) can be pressed downwards to enable the backrest (8) to rotate into the frame (1), and the handle is pulled upwards to enable the backrest (8) and the backrest accommodating cavity (7) to be fixed through the buckle (19); the front end of the backrest (8) is respectively provided with a rotating shaft (20) in a penetrating way, the extending positions of the two ends of the outer side of the upper part of the sitting cabin (6) and the two ends of the inner wall of the frame (1) are respectively provided with a bracket (21), and the brackets (21) are used for fixing the two ends of the rotating shaft (20).

6. A child's dodgem according to claim 5, characterized in that: a strip-shaped groove (22) is formed in the outer side of the rear end above the sitting cabin (6), a clamping strip (23) is arranged on the edge of the lower end of the front face of the backrest (8), and when the backrest (8) rotates along the rotating shaft (20), the clamping strip (23) abuts against the strip-shaped groove (22) to rotate; the lower end of the front surface of the backrest (8) is provided with a safety belt fixing hole (24); the handle is a safety belt which is arranged in the safety belt fixing hole (24) in a penetrating mode.

7. A child's dodgem according to claim 1, characterized in that: the backrest (8) is detachable: a square hole (25) is formed in the side wall at the rear of the backrest accommodating cavity (7); the lower end of the rear part of the backrest (8) is provided with a clamping hook, the front ends of the two sides of the backrest (8) respectively extend into the inner cavity of the frame (1), and the clamping hook (38) is embedded into the square hole (25); the pressing part (26) is connected and arranged on the side of the upper end of the clamping hook (38), when the pressing part (26) is pressed down, the clamping hook pops out of the square hole (25), and the backrest (8) is pulled out of the backrest accommodating cavity (7) backwards.

8. A child's dodgem according to claim 7, characterized in that: the front ends of two sides of the backrest (8) are respectively provided with a tongue part (27), the inner bottom surfaces of two sides of the upper end of the inner cavity of the frame (1) are provided with bayonets (28), the tongue parts (27) extend into the inner cavity of the frame (1), and the front ends are clamped into the bayonets (28); the front side and the rear side of the backrest (8) are of a double-layer structure with layered heights, the clamping hooks (38) are arranged at the lower end of the lower layer surface (29) at the rear, the lower end of the high layer surface (30) is erected at the edge of the upper end of the backrest accommodating cavity (7), and the lower end of the lower layer surface (29) slides into the backrest accommodating cavity (7); the front ends of the two sides of the backrest accommodating cavity (7) are provided with bulges, and the front ends of the two sides of the cavity formed by the low layer surface (29) are propped against the bulges.

9. A child's dodgem according to claim 1, characterized in that: the rear both sides inner wall that the controller held chamber (9) is equipped with the through-hole, controller (10) are equipped with a plurality of tray (31) including control lever (36) and controller seat (37) on the rear inner wall that the controller held chamber (9), round bar (33) are worn to establish by the rear end of controller seat (37), round bar (33) erect on tray (31), in the both ends embedding through-hole.

10. A child's dodgem according to claim 9, characterized in that: the lower end of the front side of the controller seat (37) is provided with a long buckle (34) and a short buckle (35) in an abutting mode; when the control rod (36) is in an extending state, the lower end of the long buckle (34) props against the edge of the lower end of the controller accommodating cavity (9), and the short buckle (35) supports the edge of the upper end of the controller accommodating cavity (9); when the short buckle (35) is pressed, the short buckle (35) slides into the controller accommodating cavity (9) from the edge of the upper end of the controller accommodating cavity (9), and the control rod (36) can be accommodated into the controller accommodating cavity (9) together with the controller seat (37) by pressing the control rod (36) downwards.