CN205220833U - Electrodynamic balance car - Google Patents

Abstract

The utility model provides an electrodynamic balance car, including automobile body, a plurality of wheel, gravity sensor and control mechanism, the automobile body includes the support chassis who is the flat running -board and locates the running -board lower part, and gravity sensor presss from both sides and establishes between running -board and support chassis to a center -of -gravity position information for $responding to user on the running -board, a plurality of wheels are connected with support chassis, and a plurality of wheels are triangular arrangement or polygonally arranged to the bottom surface of a plurality of wheels is located the coplanar, and the plane at the bottom surface place of a plurality of wheels is parallel with the running -board, control mechanism and gravity sensor are connected, and control mechanism moves according to the user's that gravity sensor sensed a plurality of wheels of center -of -gravity position information control. Above -mentioned electrodynamic balance car since the automobile body of main part member be flat -plate -shaped, its compact structure, portable with deposit because this electrodynamic balance car has threely or four wheels, its equilibrium of car is ridden instead of walk than higher to its relative other two -wheeled.

Description

Electrodynamic balance car

Technical field

The utility model belongs to field of mechanical technique, relates to a kind of electrodynamic balance car.

Background technology

Two-wheeled vehicle is based upon one to be called as in the groundwork of " dynamic stability ", the namely self-equalizing ability of vehicle itself.Judge the posture state residing for vehicle body with built-in accurate solid-state gyroscope, after calculating suitable instruction through central microprocessor that is accurate and high speed, CD-ROM drive motor accomplishes the effect balanced.

Suppose that we are using the overall center of gravity longitudinal axis of station steerman onboard and vehicle as reference line.When this axle is toward top rake, built-in electro-motor in vehicle body can produce strength forward, the moment of torsion that one side balance people and car are toppled over forward, produce the acceleration/accel allowing vehicle advance on the one hand, contrary, when gyroscope finds the center of gravity of steerman toward hypsokinesis, also the strength that can produce backward reaches counterbalance effect.Therefore, as long as the angle that steerman changes oneself health is forward or toward hypsokinesis, will according to the side tilted forward or backward, speed is then proportional with the degree of steerman body inclination.In principle, as long as have correct opening power and can keep the electric power of enough runnings, the people on car does not just worry there be possibility of toppling over and falling, and this is with generally to need to lean on steerman oneself to carry out the vehicle such as the Kickboard Scooter balanced different greatly.

But existing two-wheeled vehicle change direct of travel is mainly realized by twist grip.Can find out, two-wheeled vehicle arrange handle and causes its complex structure, and cost increases.

For this reason, people have devised two-wheeled vehicle not with handles, and this scooter forms primarily of the support of two energy relative motion, each support are connected to a corresponding wheel.Although this scooter eliminates handle, because stent size is less, when using this scooter, balance is not easy to grasp.

Its publication number of Chinese patent CN203958471U provides " a kind of split rotary type balanced car with two wheels ", it comprises main frame of vehicle body, main frame of vehicle body both sides are provided with wheel, be provided with motor in main frame of vehicle body and the gyroscope of motor speed can be controlled, described main frame of vehicle body comprises two split vehicle frames be separated from each other, two split central frame beams are provided with a connecting shaft, two split vehicle frames are that center of turn rotates alone with connecting shaft, gyroscope and motor is provided with separately in each split vehicle frame, split vehicle frame comprises a upper cover pedal and lower house, gyroscope is fixed on bottom upper cover pedal, gyroscope connecting circuit board, circuit card connects motor, motor driving wheel.

Two-wheel car energy realization pin in above-mentioned patent carries out acceleration-deceleration, turning function, and structure is simple.But it forms primarily of the support of two energy relative motion, in use procedure, its balance is not easy to control.And because it takes up room, it is very not convenient to carry yet.

Utility model content

A kind of electrodynamic balance car that the utility model proposes to overcome prior art.

To achieve these goals, the utility model provides a kind of electrodynamic balance car, comprises vehicle body, multiple wheel, weight sensor and control mechanism; Described vehicle body comprises in flat stretcher and is located at the support frame of described stretcher bottom, and described weight sensor is folded between described stretcher and described support frame, and for responding to the center-of-gravity position information of the user on stretcher; Described multiple wheel is connected with described support frame, and described multiple wheel is triangle arrangement or polygonal array, and the bottom surface of described multiple wheel is positioned at same plane, and the plane at the place, bottom surface of described multiple wheel is parallel with described stretcher; Described control mechanism is connected with described weight sensor, and the center-of-gravity position information of the user that described control mechanism senses according to described weight sensor controls described multiple wheel movement.

Further, described multiple wheel comprises two drive wheels being located at body structure or rear end symmetrically, described control mechanism comprises drive motor and is connected with described drive motor and controller for controlling the propulsive effort that described drive motor exports, described weight sensor is connected with described controller, described drive motor rotates for driving described two drive wheels, the center-of-gravity position information of the user that described controller senses according to described weight sensor judges the center-of-gravity position of described user, described drive motor exports corresponding propulsive effort according to the center-of-gravity position of described user and rotates to drive described two drive wheels to described two drive wheels.

Further, the quantity of described drive motor is two, two drive motor drive two drive wheels to rotate respectively, described controller is after the center-of-gravity position judging described user, and described controller controls two described drive motor and exports corresponding propulsive effort to described two drive wheels to drive described two drive wheels rotation.

Further, the quantity of described drive motor is one, described control mechanism also comprises diff, described drive motor is connected with described two drive wheels by described diff, and described drive motor output drive strength is dispensed to described two drive wheels according to the center-of-gravity position of described user and rotates to drive described two drive wheels by described diff.

Further, the quantity of described multiple wheel is four, and described multiple wheel comprises two wheel flutters, described two wheel flutters and described two rectangular arrangements of drive wheel, and described two wheel flutters and described two drive wheels are oppositely arranged.

Further, the quantity of described multiple wheel is three, and described multiple wheel also comprises a wheel flutter, and described wheel flutter and described two drive wheels are that triangle is arranged, and when described two drive wheels are arranged on the rear end of described vehicle body, described wheel flutter is arranged on the front center of described vehicle body; When described two drive wheels are arranged on the front end of described vehicle body, described wheel flutter is arranged in the middle part of the rear end of described vehicle body.

Further, the quantity of described multiple wheel is four and rectangular arrangement, described four wheels are cardan wheel, described control mechanism comprises drive motor and is connected with described drive motor and controller for controlling the propulsive effort that described drive motor exports, the quantity of described drive motor is four, each drive motor drives a described vehicle wheel rotation, described weight sensor is connected with described controller, the center-of-gravity position information of the user that described controller senses according to described weight sensor is judged the center-of-gravity position of described user and is controlled four described drive motor according to the center-of-gravity position information of described user and export vehicle wheel rotation corresponding to corresponding drive force.

Further, described stretcher is provided with inductive switch, described inductive switch is connected between described control mechanism and electric supply installation, and whether described inductive switch is for having user to control powering on of described control mechanism and power-off by responding on car.

Further, described stretcher is provided with two symmetrically arranged foot-operated regions, described support frame top has recessed installation cavity, described stretcher covers installation cavity, foot-operated area depression enters in installation cavity, and weight sensor is positioned at installation cavity also respectively against the diapire of installation cavity and the bottom in foot-operated region.

Further, described stretcher front portion is convexly equipped with downwards and protects edge for the protection of the wheel being positioned at body forward structure.

Due to the utilization of technique scheme, the utility model possesses following advantage:

Electrodynamic balance car of the present utility model due to the car body of main component be tabular, therefore, its compact conformation, easy to carry and store.Meanwhile, because this electrodynamic balance car has three or four wheels, therefore, relatively other its balance of two-wheeled vehicle is higher for it, plays balance and more easily control when user stand on this electrodynamic balance car.

Accompanying drawing explanation

Fig. 1 is the structural representation of the electrodynamic balance car of the utility model first embodiment.

Fig. 2 is the cross-sectional schematic of the electrodynamic balance car shown in Fig. 1.

Fig. 3 is the lateral plan of the electrodynamic balance car shown in Fig. 1.

Fig. 4 is the upward view of the electrodynamic balance car shown in Fig. 1.

Fig. 5 is the upward view of the electrodynamic balance car of the another embodiment of the utility model.

Detailed description of the invention

For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is further described.

Refer to Fig. 1-4, the electrodynamic balance car that the utility model embodiment provides comprises vehicle body 1, multiple wheel 2, weight sensor 3 and control mechanism.

Described vehicle body 1 comprises in flat stretcher 11 and is located at the support frame 13 of described stretcher 11 bottom, the plane at the place, bottom surface of described multiple wheel 2 is parallel with described stretcher 11, described weight sensor 3 is folded between described stretcher 11 and described support frame 13, and for responding to the center-of-gravity position information of the user on stretcher 11.

Described multiple wheel 2 is connected with described support frame 13, and described multiple wheel 2 is arrangement or polygonal array in triangle, and the bottom surface of described multiple wheel 2 is positioned at same plane.

Described control mechanism is connected with described weight sensor 3, and the center-of-gravity position information of the user that described control mechanism senses according to described weight sensor 3 controls described multiple wheel 2 and moves.

Particularly, in the present embodiment, stretcher 11 is provided with two symmetrically arranged foot-operated regions 110, and foot-operated region 110 contacts with weight sensor 3, so that when user stand on foot-operated region 110, weight sensor 3 accurately can respond to the center-of-gravity position change of user.Be understandable that, when stretcher 11 has been stood user time, weight sensor 3 can induce the center-of-gravity position information of user, when weight sensor 3 senses that the center of gravity of user tilts to dead ahead or dead aft, control mechanism controls multiple wheel 2 and advances to dead ahead or fall back to dead aft; When weight sensor 3 senses center of gravity dead ahead or the right front inclination left of user, control mechanism controls multiple wheel 2, and advance in dead ahead or right front left; When weight sensor 3 senses that the center of gravity of user tilts to left back front or right abaft, control mechanism controls multiple wheel 2 and falls back to left back or right abaft.

The quantity of described multiple wheel 2 is four and rectangular arrangement, in the working direction of described electrodynamic balance car, described multiple wheel 2 comprises two drive wheels that are that be located at vehicle body 1 front end symmetrically or rear end and two wheel flutters relative with two drive wheels, the rear end of vehicle body 1 is arranged on symmetrically at the present embodiment drive wheel, wheel flutter can arrange the front end of vehicle body 1 symmetrically, namely the pattern of back-wheel drive is adopted to drive at the present embodiment, certainly, two drive wheels arrange the front end of vehicle body 1 symmetrically, two wheel flutters arrange the rear end of vehicle body 1 symmetrically, namely the pattern of f-w-d can be adopted, in other embodiments, as shown in Figure 5, the quantity of described multiple wheel 2 is 3, and described multiple wheel 2 comprises the wheel flutter being positioned at vehicle body 1 front end and two drive wheels being positioned at vehicle body 1 rear end, and wheel flutter and two drive wheels are that triangle is arranged, be understandable that, in order to ensure the balance of electrodynamic balance car, wheel flutter is located at the medium position of vehicle body 1 front end, certainly, two drive wheels also can be arranged on the front end of vehicle body, and wheel flutter also can arrange the medium position of the rear end of vehicle body 1.It should be noted that, in the above-described embodiments, wheel flutter is cardan wheel.

Described control mechanism comprises drive motor and is connected with described drive motor and controller for controlling the propulsive effort that drive motor exports, and described weight sensor 3 is connected with described controller, and drive motor rotates for driving two drive wheels.The center-of-gravity position information of the user that described controller senses according to described weight sensor 3 judges the center-of-gravity position of user, and described drive motor controls to export corresponding propulsive effort according to the center-of-gravity position of user and rotates to drive described two drive wheels to described two drive wheels.Be understandable that, when balance truck is to dead ahead or dead aft motion, the propulsive effort that drive motor exports makes two drive wheel rotating speeds identical, and when balance truck needs to turn to, the propulsive effort that drive motor exports makes two drive wheels have certain speed discrepancy.

Particularly, in the present embodiment, the quantity of drive motor is two, two drive motor drive two drive wheels to rotate respectively, described controller is after the center-of-gravity position judging described user, and described controller controls two described drive motor and exports corresponding propulsive effort to described two drive wheels to drive described two drive wheels rotation.More specifically, when the center-of-gravity position information of the user that controller senses according to weight sensor 3 judges that the center of gravity of user turns forward, controller controls two drive motor and exports that size is identical and the propulsive effort to two a driven forwards drive wheel makes two drive wheels travel forward; When the center-of-gravity position information of the user that controller senses according to weight sensor 3 judges that the center of gravity of user retreats, controller controls two drive motor and exports that size is identical and propulsive effort to two drive wheel to rear drive makes two drive wheels move backward; When the center-of-gravity position information of the user that controller senses according to weight sensor 3 judges that the center of gravity of user rolls to one, namely now balance truck needs to turn, controller controls two drive motor and exports propulsive effort to two drive wheel varied in size and make two drive wheels all have certain velocity contrast, thus balance truck is turned.

In other embodiments, the quantity of drive motor is one, and described control mechanism also comprises diff, and drive motor is connected with two drive wheels by diff.Be understandable that, when the center-of-gravity position information of the user that controller senses according to weight sensor 3 judges that the center of gravity of user turns forward, drive motor exports that size is identical by diff and the propulsive effort driven forwards controls multiple wheel 2 travels forward; When controller retreats according to user's center of gravity that weight sensor 3 senses, it is identical and control multiple wheel 2 to the propulsive effort of rear drive and move backward that drive motor exports size by diff; When the center-of-gravity position information of the user that controller senses according to weight sensor 3 judges the center of gravity of user to lopsidedness, namely now balance truck needs to turn, drive motor exports propulsive effort to the left and right sides drive wheel varied in size by diff makes drive wheel have different speed, thus balance truck can be turned.

Particularly, described diff is gear differential, comprise the inner case for cavity and the planetary wheel being positioned at case, planetary wheel carrier, left half axle gear, right axle shaft gear, left half axle and right axle shaft, described planetary wheel carrier is located in case, planetary wheel is connected on planetary wheel carrier, the input end (driving gear namely on planetary wheel carrier) of above-mentioned planetary wheel carrier is connected with the transmission shaft of drive motor, described left half axle gear is all connected with planetary wheel in right axle shaft gear, left half axle and right axle shaft respectively with left half axle gear and right axle shaft gear affixed, two drive wheels are connected with left half axle and right axle shaft.Power enters diff through transmission shaft, Direct driver planetary wheel carrier, then drives left and right two semiaxis by satellite gear, drives left and right wheel respectively.The designing requirement of diff meets: (left half axle rotating speed)+(right axle shaft rotating speed)=2 (planetary wheel carrier rotating speed).When electrodynamic balance car is kept straight on, left and right wheel is equal with the rotating speed of planetary wheel carrier three is in state of equilibrium, and when electrodynamic balance car is turned, three's state of equilibrium is destroyed, and causes nearside wheel rotating speed to reduce, and off-side wheel rotating speed increases.

In other embodiments, the quantity of described multiple wheel 2 is four and rectangular arrangement, described four wheels 2 are cardan wheel, the quantity of described drive motor is four, each drive motor drives a wheel 2 to rotate, described controller controls four drive motor according to the center-of-gravity position information of the person of standing and exports wheel corresponding to corresponding drive force 2 and rotate, and makes the path of motion required for sense of motion synthesis of four wheels 2.When the center-of-gravity position information of the user that controller senses according to weight sensor 3 judges that the center of gravity of user turns forward, controller controls four drive motor and exports corresponding propulsive effort to four drive wheel and make four drive wheels drive balance trucks to travel forward; When the center-of-gravity position information of the user that controller senses according to weight sensor 3 judges that the center of gravity of user retreats, controller controls four drive motor and exports corresponding propulsive effort to four drive wheel and make four drive wheels drive balance trucks to move backward; When the center-of-gravity position information of the user that controller senses according to weight sensor 3 judges that the center of gravity of user rolls to one, namely now balance truck needs to turn, and controller controls four drive motor and exports corresponding propulsive effort to four drive wheel and make four drive wheels drive balance trucks to turn.Needs illustrate, when the center-of-gravity position information of the user that controller senses according to weight sensor 3 judges the center of gravity of user to front-left or front-right skew, controller can control the propulsive effort of four drive motor outputs and then the rotating speed of control four wheels 2 and rotation direction and make balance truck to front-left or front-right skew.

In other embodiments, the quantity of described multiple wheel 2 is four and rectangular arrangement, described four wheels 2 are drive wheel, the quantity of described drive motor is four, each drive motor drives a wheel 2 to rotate, described controller controls four drive motor according to the location information of the person of standing and exports wheel corresponding to corresponding drive force 2 and rotate, and makes the path of motion required for sense of motion synthesis of four wheels 2.Body ground, when the center-of-gravity position information of the user that controller senses according to weight sensor 3 judges that the center of gravity of user turns forward, controller controls four drive motor and exports two groups size is identical and the propulsive effort driven forwards makes four drive wheels travel forward to two drive wheels of front end and two drive wheels of rear end; When the center-of-gravity position information of the user that controller senses according to weight sensor 3 judges that the center of gravity of user retreats, controller controls four drive motor, and to export two groups of sizes identical and to two drive wheels of rear end and two drive wheels of front end, four drive wheels are moved to the propulsive effort of rear drive backward; When the center-of-gravity position information of the user that controller senses according to weight sensor 3 judges that the center of gravity of user rolls to one, namely now balance truck needs to turn, controller controls four drive motor and exports propulsive effort to four drive wheel varied in size and make four drive wheels all have certain velocity contrast, thus balance truck is turned.It should be noted that two the propulsive effort sizes being passed to two drive wheels in front end that the propulsive effort that two groups of sizes are identical refers to are identical, two the propulsive effort sizes being passed to two drive wheels in rear end are identical.

In other embodiments, the quantity of described multiple wheel 2 is four and rectangular arrangement, described four wheels 2 are drive wheel, the quantity of described drive motor is one, described control mechanism also comprises two difies, being connected with four drive wheels by two difies of drive motor, particularly, being connected with two anterior drive wheels by one of them diff of drive motor, drive motor is also connected with two drive wheels at rear portion by another diff.Be understandable that, when the center-of-gravity position information of the user that controller senses according to weight sensor 3 judges that the center of gravity of user turns forward, drive motor exports that two groups of sizes are identical by two difies and the propulsive effort driven forwards makes multiple wheel 2 travel forward to anterior two drive wheels and two, rear end drive wheel; When the center-of-gravity position information of the user that controller senses according to weight sensor 3 judges that the center of gravity of user retreats, it is identical and to the propulsive effort of rear drive to multiple wheel 2, multiple wheel 2 is moved backward that drive motor exports size by two difies; When the center-of-gravity position information of the user that controller senses according to weight sensor 3 judges that the center of gravity of user rolls to one, namely now balance truck needs to turn, drive motor is exported propulsive effort to the multiple wheel 2 varied in size and multiple wheel 2 can be turned to by two difies, thus balance truck is turned.It should be noted that two the propulsive effort sizes being passed to two drive wheels in front end that the propulsive effort that two groups of sizes are identical refers to are identical, two the propulsive effort sizes being passed to two drive wheels in rear end are identical.

In the present embodiment, in order to realize automatically powering on and power-off of balance truck, described stretcher 11 is provided with inductive switch 10, inductive switch 10 is connected between control mechanism and electric supply installation, and described inductive switch 10 is by whether induction car has user to control powering on of described control mechanism and power-off.Preferably, inductive switch 10 is such as pressure switch, and when user stand on vehicle body 1, inductive switch 10 conducting, the electric supply installation of vehicle body 1 inside starts the electricity consumption power elements to vehicle body 1.Preferably, electric supply installation is such as storage battery.

In the present embodiment, support frame 13 top has recessed installation cavity 130, described stretcher 11 covers installation cavity 130, foot-operated region 110 protrudes out downwards and enters in installation cavity 130, and weight sensor 3 is positioned at installation cavity 130 also respectively against the diapire of installation cavity 130 and the bottom in foot-operated region 110.Be understandable that, stretcher 11 and support frame 13 all can be rectangle tabular.Such structure makes whole electrodynamic balance car be long plate shape, and its shape size is suitable with notebook PC.And the thickness of electrodynamic balance car is also suitable with notebook PC.

The port of described installation cavity 130 is provided with support level 132, described stretcher 11 cover after installation cavity 130 and support level 132 against, avoid stretcher 11 to enter in installation cavity 130.

In the present embodiment, stretcher 11 front portion is convexly equipped with protecting along 112 for the protection of the wheel being positioned at vehicle body 1 front portion downwards.To extend the service life of electrodynamic balance car.

The electronic component being electrodynamic balance car and also comprising that such as acceleration pick-up, electric supply installation etc. form electrodynamic balance car of the present utility model, these electronic components all can be arranged in installation cavity 130.

In sum, electrodynamic balance car of the present utility model because the vehicle body 1 of main component is in tabular, therefore, its compact conformation, easy to carry and store.Meanwhile, because this electrodynamic balance car has three or four wheels 2, therefore, relatively other its balance of two-wheeled vehicle is higher for it, plays balance and more easily control when user stand on this electrodynamic balance car.

Although the utility model discloses as above by preferred embodiment; but and be not used to limit the utility model; anyly know this those skilled in the art; not departing from spirit and scope of the present utility model; can do a little change and retouching, therefore protection domain of the present utility model is when being as the criterion depending on claims scope required for protection.

Claims (10)

1. an electrodynamic balance car, is characterized in that, comprises vehicle body (1), multiple wheel (2), weight sensor (3) and control mechanism; Described vehicle body (1) comprises in flat stretcher (11) and is located at the support frame (13) of described stretcher (11) bottom, described weight sensor (3) is folded between described stretcher (11) and described support frame (13), and for responding to the center-of-gravity position information of the user on stretcher (11); Described multiple wheel (2) is connected with described support frame (13), described multiple wheel (2) is arranged or polygonal array in triangle, and the bottom surface of described multiple wheel (2) is positioned at same plane, the plane at the place, bottom surface of described multiple wheel (2) is parallel with described stretcher (11); Described control mechanism is connected with described weight sensor (3), and the center-of-gravity position information of the user that described control mechanism senses according to described weight sensor (3) controls the motion of described multiple wheel (2).

2. electrodynamic balance car according to claim 1, it is characterized in that, described multiple wheel (2) comprises two drive wheels being located at vehicle body (1) front end or rear end symmetrically, described control mechanism comprises drive motor and is connected with described drive motor and controller for controlling the propulsive effort that described drive motor exports, described weight sensor (3) is connected with described controller, described drive motor rotates for driving described two drive wheels, the center-of-gravity position information of the user that described controller senses according to described weight sensor (3) judges the center-of-gravity position of described user, described drive motor exports corresponding propulsive effort according to the center-of-gravity position of described user and rotates to drive described two drive wheels to described two drive wheels.

3. electrodynamic balance car according to claim 2, it is characterized in that, the quantity of described drive motor is two, two drive motor drive two drive wheels to rotate respectively, described controller is after the center-of-gravity position judging described user, and described controller controls two described drive motor and exports corresponding propulsive effort to described two drive wheels to drive described two drive wheels rotation.

4. electrodynamic balance car according to claim 2, it is characterized in that, the quantity of described drive motor is one, described control mechanism also comprises diff, described drive motor is connected with described two drive wheels by described diff, and described drive motor output drive strength is dispensed to described two drive wheels according to the center-of-gravity position of described user and rotates to drive described two drive wheels by described diff.

5. the electrodynamic balance car according to claim 2-4 any one, it is characterized in that, the quantity of described multiple wheel (2) is four, described multiple wheel (2) comprises two wheel flutters, described two wheel flutters and described two rectangular arrangements of drive wheel, and described two wheel flutters and described two drive wheels are oppositely arranged.

6. the electrodynamic balance car according to claim 2-4 any one, it is characterized in that, the quantity of described multiple wheel (2) is three, described multiple wheel (2) also comprises a wheel flutter, described wheel flutter and described two drive wheels are that triangle is arranged, and when described two drive wheels are arranged on the rear end of described vehicle body (1), described wheel flutter is arranged on the front center of described vehicle body (1); When described two drive wheels are arranged on the front end of described vehicle body (1), described wheel flutter is arranged in the middle part of the rear end of described vehicle body (1).

7. electrodynamic balance car according to claim 1, it is characterized in that, the quantity of described multiple wheel (2) is four and rectangular arrangement, described four wheels (2) are cardan wheel, described control mechanism comprises drive motor and is connected with described drive motor and controller for controlling the propulsive effort that described drive motor exports, the quantity of described drive motor is four, each drive motor drives the rotation of a described wheel (2), described weight sensor (3) is connected with described controller, the center-of-gravity position information of the user that described controller senses according to described weight sensor (3) is judged the center-of-gravity position of described user and is controlled four described drive motor according to the center-of-gravity position information of described user and export wheel corresponding to corresponding drive force (2) and rotate.

8. electrodynamic balance car according to claim 1, it is characterized in that, described stretcher (11) is provided with inductive switch (10), described inductive switch (10) is connected between described control mechanism and electric supply installation, and whether described inductive switch (10) is for having user to control powering on of described control mechanism and power-off by responding on car.

9. electrodynamic balance car according to claim 1, it is characterized in that, described stretcher (11) is provided with two symmetrically arranged foot-operated regions (110), described support frame (13) top has recessed installation cavity (130), described stretcher (11) covers installation cavity (130), foot-operated region (110) depression enters in installation cavity (130), and weight sensor (3) is positioned at installation cavity (130) also respectively against the diapire of installation cavity (130) and the bottom of foot-operated region (110).

10. electrodynamic balance car according to claim 1, is characterized in that, described stretcher (11) front portion is convexly equipped with protecting along (112) for the protection of the wheel being positioned at vehicle body (1) front portion downwards.