阅读说明：本技术 一种平衡车 (Balance car ) 是由 何家保 于 2021-02-01 设计创作，主要内容包括：本发明公开了一种平衡车,旨在克服现有技术支撑结构复杂的问题,它包括支撑杆,支撑杆上并排设置有一对车轮,车轮包括带有机轴的轮毂电机,机轴固定设置在支撑杆上,支撑杆上设置有一对车体,支撑杆上固定设置有用于检测支撑杆形变的应变式传感器,还包括电池和一对控制电路板,控制电路板上均设置有角度传感器,电池、控制电路板、角度传感器、轮毂电机和应变式传感器电连接在一起,支撑杆包括第一支撑杆、转轴段和第二支撑杆段,第一支撑杆轴向固定在第二支撑杆上,第二支撑杆段固定设置在转轴段上,当车体承重时,支撑杆可发生形变,应变式传感器用于检测支撑杆的形变,并确定是否启动平衡车。(The invention discloses a balance car, aiming at overcoming the problem of complex supporting structure in the prior art, which comprises a supporting rod, wherein a pair of wheels are arranged on the supporting rod side by side, each wheel comprises a hub motor with a crankshaft, the crankshaft is fixedly arranged on the supporting rod, a pair of car bodies are arranged on the supporting rod, a strain sensor for detecting the deformation of the supporting rod is fixedly arranged on the supporting rod, the balance car also comprises a battery and a pair of control circuit boards, angle sensors are arranged on the control circuit boards, the battery, the control circuit boards, the angle sensors, the hub motors and the strain sensors are electrically connected together, the supporting rod comprises a first supporting rod, a rotating shaft section and a second supporting rod section, the first supporting rod is axially fixed on the second supporting rod, the second supporting rod section is fixedly arranged on the rotating shaft section, when the car bodies bear weight, the supporting rod can deform, and the strain sensors are used, and determines whether to start the balance car.)

1. A balance car is characterized by comprising a support rod (1), wherein a pair of wheels (2) are arranged on the support rod (1) side by side, each wheel (2) comprises a hub motor with a crankshaft (21), the crankshaft (21) is fixedly arranged on the support rod (1), a pair of car bodies (3) are arranged on the support rod (1), and a strain sensor (82) for detecting the deformation of the support rod (1) is fixedly arranged on the support rod (1);

the device is characterized by further comprising a battery (84) and a pair of control circuit boards (81), wherein angle sensors (83) are arranged on the control circuit boards (81), the battery (84), the control circuit boards (81), the angle sensors (83), a hub motor and a strain type sensor (82) are electrically connected together, the supporting rod (1) comprises a first supporting rod (11), a rotating shaft section (12) and a second supporting rod section (13), the first supporting rod (11) is axially fixed on the rotating shaft section (12), the first supporting rod (11) can rotate around the rotating shaft section (12), the second supporting rod section (13) is fixedly arranged on the rotating shaft section (12), a vehicle body (3) and a crankshaft (21) are fixedly arranged on the first supporting rod (11), one control circuit board (81) is fixedly arranged on one vehicle body (3), the other vehicle body (3) and the other crankshaft (21) are fixedly arranged on the second supporting rod section (13), the other control circuit board (81) is fixedly arranged on the other vehicle body (3), when the vehicle body (3) bears the load, the supporting rod (1) can deform, and the strain sensor (82) is used for detecting the deformation of the supporting rod (1) and determining whether to start the balance vehicle.

2. A balance vehicle as claimed in claim 1, wherein the first support rod (11) comprises a first tube (111), the shaft section (12) is inserted into the first tube (111), and a first connecting member (14) is detachably arranged between the shaft section (12) and the first tube (111), the first connecting member (14) axially fixing the first tube (111) to the shaft section (12).

3. The balance vehicle of claim 2, wherein the first connecting member (14) is a screw, an arc-shaped hole (112) is formed in the first pipe body (111), a first threaded hole (121) is formed in the rotating shaft section (12), the first connecting member (14) is inserted into the arc-shaped hole (112), and the first connecting member (14) is further screwed in the first threaded hole (121).

4. A balance bike according to claim 1, characterized in that the second support rod section (13) comprises a second tube (131), the shaft section (12) is inserted into the second tube (131), a second connecting member (15) is detachably arranged between the shaft section (12) and the second tube (131), and the second connecting member (15) fixes the shaft section (12) and the second tube (131).

5. A balance car according to claim 1 or 2 or 3 or 4, wherein an anti-wear pad (7) is provided between the first support rod (11) and the second support rod segment (13).

6. A balance vehicle as claimed in claim 1, wherein the strain gauge sensors (82) are formed as flexible membranes in their overall configuration, the strain gauge sensors (82) being attached to the support rods (1).

7. The balance vehicle of claim 1, further comprising a first compression block (4), wherein two ends of the first compression block (4) are respectively and fixedly arranged on the vehicle body (3), and the support rod (1) and the crankshaft (21) are fixedly arranged between the first compression block (4) and the vehicle body (3).

8. The balance vehicle as claimed in claim 7, wherein the support rod (1) is provided with a connecting groove (16), the connecting groove (16) has a semicircular cross section, the crankshaft (21) comprises a connecting rod section (211), the connecting rod section (211) has a semicircular cross section, and the first pressing block (4) fixes the connecting rod section (211) in the connecting groove (16).

9. The balance car according to claim 7 or 8, wherein a second compression block (5) is fixedly arranged on the car body (3), two ends of the second compression block (5) are respectively fixedly arranged on the car body (3), the support rod (1) is fixedly arranged between the car body (3) and the second compression block (5), and the first compression block (4) and the second compression block (5) are sequentially arranged in the axial direction of the support rod (1).

10. The balance vehicle according to claim 1, wherein the vehicle body (3) is provided with a mounting groove (311), the support rod (1) is partially arranged in the mounting groove (311), the vehicle body (3) is provided with a key block (312) positioned in the mounting groove (311), the side surface of the support rod (1) is provided with a key slot (19), and the key block (312) is matched with the key slot (19).

Technical Field

The invention belongs to a vehicle, in particular to a balance car.

Background

The electric balance vehicle, also called a body sensing vehicle, a thinking vehicle, a position pickup vehicle and the like, mainly comprises a single wheel and two wheels. The operating principle is mainly established on a basic principle called Dynamic Stabilization (Dynamic Stabilization), a gyroscope and an acceleration sensor in a vehicle body are used for detecting the change of the posture of the vehicle body, and a servo control system is used for accurately driving a motor to perform corresponding adjustment so as to keep the balance of pedals. The gyroscope board is fixed inside the vehicle body and is parallel to the horizontal plane. When the body of the driver leans forward, the bicycle will move forward, and when the body leans backward, the bicycle will move backward. The balance car is a novel green product used by modern people as a travel tool and leisure and entertainment.

In the prior art, a two-wheeled balance car comprises a pair of rotatable car bodies, wherein one car body is provided with wheels, the other car body is provided with the other wheels, gyroscopes are arranged in the car bodies, the gyroscopes are used for detecting the rotation angles of the car bodies, the rotation speeds of the corresponding wheels are controlled according to the detected angle changes, mechanical switches or photoelectric switches are further arranged on the car bodies, and when the balance car is started or closed, the mechanical switches or the photoelectric switches need to be triggered manually.

However, the prior art is not perfect, a pair of car bodies of the balance car as a bearing structure has the problems of complex structure and overlarge size, the start and stop mode of the balance car adopts manual triggering, and the problems of inconvenient operation and complex assembly structure exist.

Disclosure of Invention

In order to overcome the defects and problems in the prior art, the invention provides a balance car.

In order to achieve the purpose, the invention adopts the following technical scheme:

a balance car comprises a support rod, wherein a pair of wheels are arranged on the support rod side by side, each wheel comprises a hub motor with a crankshaft, the crankshaft is fixedly arranged on the support rod, a pair of car bodies are arranged on the support rod, and a strain sensor for detecting the deformation of the support rod is fixedly arranged on the support rod;

the balance car comprises a hub motor, a support rod, a pair of control circuit boards, an angle sensor, a battery, the control circuit boards, the angle sensor, the hub motor and the strain type sensor are electrically connected together, the support rod comprises a first support rod, a rotating shaft section and a second support rod section, the first support rod is axially fixed on the rotating shaft section, the first support rod can rotate around the rotating shaft section, the second support rod section is fixedly arranged on the rotating shaft section, a car body and a machine shaft are fixedly arranged on the first support rod, the control circuit board is fixedly arranged on the car body, the other car body and the other machine shaft are fixedly arranged on the second support rod section, the other control circuit board is fixedly arranged on the other car body, when the car body bears the weight, the support rod can deform, and the strain type sensor is used for detecting the deformation of the support rod and determining whether to start the balance car.

Preferably, the first support rod comprises a first pipe body, the rotating shaft section is inserted into the first pipe body, a first connecting piece is detachably arranged between the rotating shaft section and the first pipe body, and the first pipe body is axially fixed on the rotating shaft section through the first connecting piece.

Preferably, the first connecting piece is a screw, an arc-shaped hole is formed in the first pipe body, a first threaded hole is formed in the rotating shaft section, the first connecting piece penetrates through the arc-shaped hole, and the first connecting piece is further in threaded connection with the first threaded hole.

Preferably, an anti-wear pad is arranged between the first support rod and the second support rod section.

Preferably, the whole structure of the strain sensor is a film, and the strain sensor is attached to the support rod.

Preferably, the device further comprises a first pressing block, two ends of the first pressing block are respectively and fixedly arranged on the vehicle body, and the supporting rod and the crankshaft are fixedly arranged between the first pressing block and the vehicle body.

Preferably, the support rod is provided with a connecting groove, the cross section of the connecting groove is semicircular, the crankshaft comprises a connecting rod section, the cross section of the connecting rod section is also semicircular, and the connecting rod section is fixedly arranged in the connecting groove by the first pressing block.

Preferably, a second pressing block is fixedly arranged on the vehicle body, two ends of the second pressing block are respectively fixedly arranged on the vehicle body, the supporting rod is fixedly arranged between the vehicle body and the second pressing block, and the first pressing block and the second pressing block are sequentially arranged in the axial direction of the supporting rod.

Preferably, the automobile body is provided with a mounting groove, the support rod part is arranged in the mounting groove, the automobile body is provided with a key block positioned in the mounting groove, the side surface of the support rod is provided with a key groove, and the key block is matched with the key groove.

Compared with the prior art, the invention has the outstanding and beneficial technical effects that:

(1) when the user steps on the automobile body, the automobile body is in the bearing state, and strain sensor atress on the bracing piece takes place to deform and produces corresponding signal of telecommunication, and whether the balance car can open according to strain sensor's the signal of telecommunication judgement, need not user's manual switch balance car, and the action of balance car from top to bottom can open or close the balance car, and consequently this balance car has easy operation, reasonable in design, detects sensitive and the fast advantage of response speed.

(2) This opening of balance car stops to confirm through the bearing on the automobile body, when the user falls down from the automobile body, loses the bearing on the automobile body, and the balance car is closed immediately, avoids the balance car to continue to go and causes the secondary accident after falling down, therefore this balance car has safe in utilization's advantage.

(3) When the balance car is used, the pair of car bodies and the pair of wheels are arranged on the common supporting rod, the pair of car bodies are used for being trampled by the feet of a user, the pair of wheels are used for controlling the balance car to run, unnecessary parts are reduced, the structure of the balance car is simplified, and the bearing structure is reasonable in design, so that the balance car has the advantages of simple structure, reliable bearing, small size and flexibility.

(4) When the balance car is used, one car body can rotate forwards and backwards relative to the other car body, the angle sensor on the car body is used for detecting the inclination angle of the car body, and the feet of a user can control the pair of car bodies to incline forwards or incline backwards together or form different inclination angles, so that the operations of advancing, retreating, steering and the like of the balance car are realized, and the driving of the balance car is flexibly and simply controlled, so that the balance car has the advantages of simplicity and convenience in control, flexibility in running and strong playability.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is one of the schematic views of the explosive structure of the present invention;

FIG. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is a second schematic illustration of the explosive structure of the present invention;

FIG. 5 is a third schematic illustration of the explosive structure of the present invention;

FIG. 6 is a schematic structural view of a pair of caps according to the present invention;

in the figure: 1-supporting rod, 2-wheel, 3-vehicle body, 4-first pressing block, 5-second pressing block, 6-third pressing block, 7-anti-wear pad, 81-control circuit board, 82-strain sensor, 83-angle sensor, 84-battery, 11-first supporting rod, 12-rotating shaft section, 13-second supporting rod section, 14-first connecting piece, 15-second connecting piece, 16-connecting groove, 17-first plane part, 18-second plane part, 19-key groove, 21-crankshaft, 31-top cover, 32-bottom cover, 33-pedal, 34-horse race lamp cover, 35-state lamp cover, 36-handle rod, 71-threading hole, 111-first pipe body, 112-arc hole, 121-a first threaded hole, 122-a second threaded hole, 131-a second tube body, 132-a through hole, 211-a connecting rod section, 311-a mounting groove and 312-a key block.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings and the specific embodiments.

As shown in fig. 1 to 6, a balance car comprises a support rod 1, a pair of wheels 2 are arranged on the support rod 1 side by side, one wheel 2 is arranged at one end of the support rod 1, the other wheel 2 is arranged at the other end of the support rod 1, the wheels 2 comprise hub motors, each hub motor is provided with a crankshaft 21, the crankshaft 21 of one wheel 2 is fixedly arranged at one end of the support rod 1, and the crankshaft 21 of the other wheel 2 is fixedly arranged at the other end of the support rod 1.

Still be provided with a pair of automobile body 3 on the bracing piece 1, automobile body 3 sets up side by side between a pair of wheel 2, and when 3 bearing of automobile body, bracing piece 1 can take place to deform, specifically, bracing piece 1 adopts the steel pipe to make, and bracing piece 1 can take place elastic deformation. The fixed strain sensor 82 that is provided with on the bracing piece 1, strain sensor 82 is used for detecting the deformation of bracing piece 1, strain sensor 82 also takes place mechanical deformation under the effect of bracing piece 1 deformation, its self resistance value changes along with the deformation volume, thereby can convert strain sensor 82's resistance value into automobile body 3's bearing information, when automobile body 3 bearing, bracing piece 1 can take place deformation, strain sensor 82 detects the deformation of bracing piece 1, and confirm whether start balance car.

Specifically, when the weight on the vehicle body 3 is not less than five kilograms, the electric signal sent by the strain gauge sensor 82 can start the balance vehicle, and when the weight on the vehicle body 3 is less than five kilograms, the electric signal sent by the strain gauge sensor 82 can shut down the balance vehicle.

When the user steps on automobile body 3, automobile body 3 is in the bearing state, and strain sensor 82 atress on the bracing piece 1 takes place to deform and produces corresponding signal of telecommunication, and whether the balance car can be opened according to strain sensor 82's the signal of telecommunication judgement, need not user's manual switch balance car, and the action of balance car from top to bottom can be opened or close the balance car, therefore this balance car has easy operation, reasonable in design, detects sensitive and the fast advantage of response speed.

This opening of balance car stops to confirm through the bearing on the automobile body 3, when the user falls down from automobile body 3, loses the bearing on the automobile body 3, and the balance car is closed immediately, avoids the balance car to continue to go and causes the secondary accident after falling down, therefore this balance car has safe in utilization's advantage.

When the balance car is used, the pair of car bodies 3 and the pair of wheels 2 are arranged on the common supporting rod 1, the pair of car bodies 3 are trampled by feet of a user, the pair of wheels 2 are used for controlling the balance car to run, unnecessary parts are reduced, the structure of the balance car is simplified, and the bearing structure is reasonable in design, so that the balance car has the advantages of simple structure, reliable bearing, small size and flexibility.

The vehicle-mounted control device further comprises a battery 84 and a pair of control circuit boards 81, wherein angle sensors 83 are arranged on the control circuit boards 81, the angle sensors 83 are gyroscopes, the battery 84, the control circuit boards 81, the angle sensors 83, the hub motor and the strain sensors 82 are electrically connected together, and specifically, the pair of control circuit boards 81, the control circuit boards 81 and the strain sensors 82, and the hub motor and the control circuit boards 81 can be connected together through wires (not shown in the figure).

The support rod 1 comprises a first support rod 11, a rotating shaft section 12 and a second support rod section 13, the first support rod 11 is axially fixed on the rotating shaft section 12, the first support rod 11 can rotate around the rotating shaft section 12, a vehicle body 3 and a crankshaft 21 are fixedly arranged on the first support rod 11, a control circuit board 81 is fixedly arranged on the vehicle body 3, another vehicle body 3 and another crankshaft 21 are fixedly arranged on the second support rod section 13, and another control circuit board 81 is fixedly arranged on another vehicle body 3, so that one vehicle body 3 can rotate back and forth relative to another vehicle body 3.

Specifically, the angle sensor 83 on the vehicle body 3 is used to detect the angle of inclination of the vehicle body 3, and when the vehicle body 3 is tilted forward, the wheels 2 on the vehicle body 3 are rotated forward, and when the vehicle body 3 is tilted backward, the wheels 2 on the vehicle body 3 are rotated backward, and when the angle of inclination is different between a pair of the vehicle bodies 3, a differential speed is formed between the pair of the wheels 2, thereby achieving steering.

When the balance car is used, one car body 3 can rotate forwards and backwards relative to the other car body 3, the angle sensor 83 on the car body 3 is used for detecting the inclination angle of the car body 3, and the two feet of a user can control the pair of car bodies 3 to lean forwards or backwards together or form different inclination angles, so that the operations of advancing, backing, steering and the like of the balance car are realized, and the driving of the balance car is flexible and simple, so the balance car has the advantages of simplicity and convenience in operation, flexibility in running and strong playability.

First bracing piece 11 includes first body 111, the cross section of pivot section 12 is personally submitted circularly, pivot section 12 and first body 111 looks adaptation, pivot section 12 is inserted and is established in first body 111, can dismantle between pivot section 12 and the first body 111 and be provided with first connecting piece 14, first connecting piece 14 is with first body 111 axial fixity on pivot section 12, thereby realize that first bracing piece 11 can revolute pivot section 12 and rotate, and, the dismouting of first bracing piece 11 and pivot section 12 can be realized to dismouting first connecting piece 14, assembly structure reasonable in design, the dismouting of being convenient for.

First connecting piece 14 is the screw, arc hole 112 has been seted up on first body 111, arc hole 112 sets up in the week of first body 111, first screw hole 121 has been seted up on pivot section 12, arc hole 112 is worn to locate by first connecting piece 14, first connecting piece 14 is threaded connection still in first screw hole 121, when first bracing piece 11 rotates on pivot section 12, first connecting piece 14 slides along the length direction of arc hole 112, arc hole 112 has injectd the turned angle of first bracing piece 11 on pivot section 12, the safety in utilization of this balance car has been improved.

Second bracing piece section 13, pivot section 12 and first bracing piece 11 set gradually together, specifically, second bracing piece section 13 includes second body 131, and pivot section 12 is inserted and is established in second body 131, can dismantle between pivot section 12 and the second body 131 and be provided with second connecting piece 15, and second connecting piece 15 sets up pivot section 12 and second body 131 are fixed together. The second connecting member 15 is also a screw, a through hole 132 is formed in the second tube 131, a second threaded hole 122 is formed in the rotating shaft section 12, the second connecting member 15 penetrates through the through hole 132, and the second connecting member 15 is further screwed in the second threaded hole 122.

Except for the arc-shaped holes 112 and the through holes 132, the integral structure of the second support rod section 13 is consistent with that of the first support rod 11, and the first support rod 11 and the second support rod section 13 can be made of the same raw material, so that the production cost is reduced.

Be provided with wear pad 7 between first bracing piece 11 and the second bracing piece section 13, wear pad 7 adopts the little, smooth copper of coefficient of friction or steel to make, avoids first bracing piece 11 and second bracing piece section 13 direct contact and causes the problem of wearing and tearing. Specifically, the overall structure of abrasionproof pad 7 is the ring, 7 covers of abrasionproof pad are established on pivot section 12 and fixed the setting on pivot section 12, abrasionproof pad 7 sets up between first bracing piece 11 and second bracing piece section 13, abrasionproof pad 7 still sets up between a pair of automobile body 3, also avoid direct contact and cause the problem of wearing and tearing between a pair of automobile body 3, in addition, abrasionproof pad 7 plays the effect of filling the clearance between a pair of automobile body 3, abrasionproof pad 7 still plays the effect of filling the clearance between first bracing piece 11 and the second bracing piece section 13, the protective effect of automobile body 3 has been improved.

The wear-resistant pad 7 is provided with a threading hole 71, and a wire between the pair of control circuit boards 81 can be threaded in the threading hole 71, so that the compactness of the structure is improved, and the wire is prevented from being scattered on the balance car.

The overall structure of strain gauge sensor 82 is soft film, and strain gauge sensor 82 laminates in the side of bracing piece 1, and strain gauge sensor 82 is soft, and strain gauge sensor 82 can laminate on the plane or the cambered surface of bracing piece 1 side, and strain gauge sensor 82 and bracing piece 1 fully contact have further improved the sensitivity that strain gauge sensor 82 detected. Specifically, the first plane portion 17 is formed on the support bar 1, and the strain gauge sensor 82 is attached to the first plane portion 17.

Still include first compact heap 4, the both ends of first compact heap 4 are fixed respectively and are set up on automobile body 3, and bracing piece 1, spindle 21 are fixed to be set up between first compact heap 4 and automobile body 3, and first compact heap 4 and automobile body 3 constitute the staple bolt structure, and first compact heap 4 and automobile body 3 hold bracing piece 1 and spindle 21 tightly together.

Specifically, first compact heap 4 is a pair of, but the both ends bolt fastening of a first compact heap 4 is on an automobile body 3, but the both ends bolt fastening of another first compact heap 4 is on another automobile body 3, first bracing piece 11, a quick-witted axle 21 is fixed to be set up between a first compact heap 4 and an automobile body 3, second bracing piece section 13, another quick-witted axle 21 is fixed to be set up between another first compact heap 4 and another automobile body 3, the quick-witted axle 21, bracing piece 1 is through the fixed setting on automobile body 3 of first compact heap 4, easy dismounting has, moreover, the steam generator is simple in structure, firm in connection's advantage.

The connecting groove 16 has been seted up on bracing piece 1, the cross section of connecting groove 16 is semicircular, spindle 21 includes connecting rod section 211, the cross section of connecting rod section 211 is semicircular too, connecting rod section 211 and the 16 looks adaptations of connecting groove, connecting rod section 211 sets up in connecting groove 16, first compact heap 4 sets up connecting rod section 211 in connecting groove 16 fixedly, first compact heap 4 fixes connecting rod section 211 axial and circumference in connecting groove 16, the compactness of structure has been improved, the fastness of connection has also been further improved.

The fixed second compact heap 5 that is provided with on automobile body 3, the both ends of second compact heap 5 are fixed respectively and are set up on automobile body 3, bracing piece 1 is fixed to be set up between automobile body 3 and second compact heap 5, second compact heap 5 and automobile body 3 constitute the staple bolt structure, second compact heap 5 and automobile body 3 are held tightly on bracing piece 1, first compact heap 4 and second compact heap 5 set gradually in the axial of bracing piece 1, second compact heap 5 still sets up between a pair of first compact heap 4, automobile body 3 and bracing piece 1's firm in connection have further been improved.

Specifically, the second pressing blocks 5 are also a pair, two ends of one second pressing block 5 can be bolted to one car body 3, two ends of the other second pressing block 5 are bolted to the other car body 3, the first support rod 11 is fixedly arranged between one second pressing block 5 and one car body 3, and the second support rod section 13 is fixedly arranged between the other second pressing block 5 and the other car body 3.

The battery 84 is fixedly arranged on the vehicle body 3, the support rod 1 is arranged between the battery 84 and the vehicle body 3, the battery 84 and the vehicle body 3 also form a hoop structure, the battery 84 and the vehicle body 3 are tightly embraced on the support rod 1, the second plane part 18 is formed on the side surface of the support rod 1, the battery 84 is attached to the second plane part 18, and the second plane part 18 plays a role in avoiding the battery 84.

Specifically, the second flat portion 18 is formed on the first support rod 11, the third pressing block 6 is fixedly arranged on the vehicle body 3, two ends of the third pressing block 6 can be fixed on the vehicle body 3 through bolts, the third pressing block 6 and the vehicle body 3 also form an anchor ear structure, and the battery 84 and the support rod 1 are tightly held by the third pressing block 6 and the vehicle body 3.

The utility model discloses a supporting rod, including automobile body 3, mounting groove 311, supporting rod 1, key piece 312 is located mounting groove 311, keyway 19 has been seted up to the side of supporting rod 1, key piece 312 and keyway 19 looks adaptation, key piece 312 sets up in keyway 19, when supporting rod 1 installs on automobile body 3, key piece 312 can play the effect of location, further made things convenient for the assembly, and, key piece 312 fixes automobile body 3 axial and circumference on supporting rod 1, the fastness of connection has further been improved.

Specifically, the vehicle body 3 is provided with mounting grooves 311, the mounting grooves 311 are provided with key blocks 312, the side surfaces of the first support rods 11 are provided with key grooves 19, the side surfaces of the second support rod segments 13 are also provided with key grooves 19, the first support rods 11 are partially fitted in the mounting grooves 311 of the vehicle body 3, the key blocks 312 of the vehicle body 3 are fitted in the key grooves 19 of the first support rods 11, the second support rod segments 13 are partially fitted in the mounting grooves 311 of another vehicle body 3, and the key blocks 312 of another vehicle body 3 are fitted in the key grooves 19 of the second support rod segments 13.

Automobile body 3 is hollow, and bracing piece 1 wears to locate automobile body 3, and angle sensor 83, battery 84, control circuit board 81, strain gauge sensor 82 all set up in automobile body 3, and first compact heap 4, second compact heap 5 and third compact heap 6 also set up in automobile body 3 to automobile body 3 plays the guard action to the part of balance car, has improved the operational reliability of this balance car.

Specifically, the vehicle body 3 includes a top cover 31 and a bottom cover 32, the mounting groove 311 is provided on the top cover 31, the first pressing block 4, the second pressing block 5 and the third pressing block 6 are fixedly provided on the top cover 31, the bottom cover 32 is bolted on the lower end of the top cover 31, and the angle sensor 83, the battery 84, the control circuit board 81, the strain gauge sensor 82, the first pressing block 4, the second pressing block 5 and the third pressing block 6 are respectively provided between the top cover 31 and the bottom cover 32, thereby facilitating disassembly and assembly.

Automobile body 3 still includes horse race lamp shade 34, and horse race lamp shade 34 is transparent, and horse race lamp shade 34 is fixed to be set up on top cap 31, and the mountable has light emitting lamp strip (not shown in the figure) between horse race lamp shade 34 and the top cap 31 for improve the light effect of this balance car.

The car body 3 further comprises a pedal 33, the pedal 33 can be made of anti-skid rubber, the pedal 33 is fixedly arranged at the upper end of the top cover 31, and the upper surface of the pedal 33 can be provided with patterns (not shown in the figure) for improving anti-skid property and aesthetic property.

Automobile body 3 still includes status light lamp shade 35, and status light lamp shade 35 is transparent, and status light lamp shade 35 and horse race lamp shade 34 are used for setting up in the both sides of top cap 31, and the mountable has status light (not shown in the figure) between status light lamp shade 35 and the top cap 31 for indicate the operating condition and the electric quantity information etc. of balance car.

The car body 3 further comprises a handle bar 321, the top cover 31 and the bottom cover 32 are matched to form a handle bar 36, and a user can hold the handle bar 36 with hands to lift the balance car, so that the balance car is convenient to carry.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.