CN215971908U

CN215971908U - Two-wheeled electrodynamic balance car

Info

Publication number: CN215971908U
Application number: CN202122402943.5U
Authority: CN
Inventors: 肖翀
Original assignee: Yueyang Aidaxing Intelligent Technology Co ltd
Current assignee: Yueyang Aidaxing Intelligent Technology Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-03-08
Anticipated expiration: 2031-09-30

Abstract

The utility model belongs to the technical field of electric balance cars, and particularly relates to a two-wheeled electric balance car. Aiming at the defect that at least two assembling nodes exist on a hub motor shaft and a middle shaft of the existing two-wheel electric balance car, the utility model adopts the following technical scheme: a two-wheeled electrodynamic balance car comprising: the outer rotor type hub motor comprises a first outer rotor type hub motor and a second outer rotor type hub motor, wherein the first outer rotor type hub motor comprises a motor main body and a first connecting shaft, one end of the first connecting shaft is positioned in the motor main body, and the second outer rotor type hub motor comprises a motor main body and a second connecting shaft, one end of the second connecting shaft is positioned in the motor main body; wherein, first connecting shaft is integrative piece, the second connecting shaft is integrative piece. According to the two-wheel electric balance vehicle, the number of shafts between the two hub motors is smaller, the assembling procedures between the shafts are naturally smaller, and the assembling efficiency is higher; the coaxiality can be better ensured.

Description

Two-wheeled electrodynamic balance car

Technical Field

The utility model belongs to the technical field of electric balance cars, and particularly relates to a two-wheeled electric balance car.

Background

A conventional two-wheeled electric balance vehicle generally includes main components such as a wheel with an outer rotor type in-wheel motor, a vehicle body, and a turning mechanism with a lateral shaft.

Referring to fig. 1, the conventional two-wheeled electric balance vehicle has at least three shafts (or even more): the automobile wheel hub motor comprises a first outer rotor type wheel hub motor shaft (1a), a second outer rotor type wheel hub motor shaft (1b) and a middle shaft (1c) which is located in a left automobile body and a right automobile body at the same time, wherein the two outer rotor type wheel hub motor shafts (1a and 1b) are connected with the middle shaft (1c), so that at least two assembly nodes (the number of the nodes is one less than the number of the shafts) exist, the number of the assembly processes is relatively large, the coaxiality cannot be guaranteed, and an improved space is provided. Meanwhile, the assembly position of the outer rotor type hub motor shaft and the middle shaft is also a main stress point during riding, and if the assembly is improper, loosening and displacement and even breakage easily occur, so that danger is caused.

Disclosure of Invention

The utility model provides a two-wheeled electrodynamic balance car aiming at the defects that the number of equiaxial outer rotor type hub connecting shafts and a middle shaft of the existing two-wheeled electrodynamic balance car is large and at least two assembling nodes exist, so that the number of shafts and the assembling nodes are reduced, the assembling efficiency is improved, and the coaxiality and the reliability of each shaft are ensured.

In order to achieve the purpose, the utility model adopts the following technical scheme: a two-wheeled electrodynamic balance car, comprising:

the outer rotor type hub motor comprises a first outer rotor type hub motor and a second outer rotor type hub motor, wherein the first outer rotor type hub motor comprises a motor main body and a first connecting shaft, one end of the first connecting shaft is positioned in the motor main body, and the second outer rotor type hub motor comprises a motor main body and a second connecting shaft, one end of the second connecting shaft is positioned in the motor main body;

wherein the first connecting shaft and the second connecting shaft have only one assembly node therebetween.

Compared with the prior art, the two-wheeled electric balance car has two or more assembly nodes, reduces the number of shafts, only has one assembly node of the first connecting shaft and the second connecting shaft, and has less assembly processes and high assembly efficiency; because the connecting shaft plays the role of the original motor shaft and the original middle shaft, the number of the shafts is small, the coaxiality is better, and the reliability is strong.

As an improvement, the first connecting shaft and the second connecting shaft are in rotation limiting connection through a connecting assembly arranged on the radial outer side of the first connecting shaft and the second connecting shaft. The first connecting shaft and the second connecting shaft can rotate relatively to limit the angle, so that the two-wheeled electric balance car can be controlled.

As an improvement, the connecting assembly and the first connecting shaft are rotatable, and the connecting assembly is fixedly connected with the second connecting shaft.

As an improvement, the connecting assembly comprises an upper connecting sheet and a lower connecting sheet which are arranged on the radial outer side of the first connecting shaft and the second connecting shaft, and the upper connecting sheet and the lower connecting sheet are fixedly connected through screws and clamp the first connecting shaft and the second connecting shaft.

As an improvement, the connecting assembly can also adopt a round tubular coupling with a necking groove.

As an improvement, the two-wheeled electrodynamic balance car still includes left casing and right casing, right casing includes right epitheca and right inferior valve, right epitheca, right inferior valve, upper junction piece and lower junction piece pass through the same set of screw rigid coupling.

As a modification, the first connecting shaft is provided with a radial convex part, and the upper connecting piece and the lower connecting piece are also provided with radial positioning grooves matched with the radial convex part.

As an improvement, the upper connecting piece and/or the lower connecting piece are/is also provided with a circumferential angle limiting groove, an angle screw is arranged in the angle limiting groove, the first connecting shaft is provided with a screw hole, and the angle screw is screwed into the screw hole.

As an improvement, the first connecting shaft is detachably connected with the motor main body, and/or the second connecting shaft is detachably connected with the motor main body.

As an improvement, the motor main body comprises a stator and a supporting positioning sleeve which is arranged on a central ring of the stator in a tight fit mode, the first connecting shaft and/or the second connecting shaft are inserted into the stator with the supporting positioning sleeve and detachably connected with the supporting positioning sleeve, and the supporting positioning sleeve is coaxially arranged with the first connecting shaft and the second connecting shaft. By adopting the design, the connecting shaft can be assembled with the shell firstly and then connected with the motor main body, the assembling process of the connecting shaft is changed, the assembling efficiency and the convenience can be effectively improved, and the motor main body is more convenient to replace.

As an improvement, the outer rotor type in-wheel motor further comprises an axial anti-slip member, the axial anti-slip member enters the motor main body from the outer side of the motor main body and is detachably connected with the connecting shaft, and an anti-rotation structure is arranged between the connecting shaft and the supporting and positioning sleeve.

As a modification, a translational dislocation section is formed on the first connecting shaft and/or the second connecting shaft.

As an improvement, the two-wheeled electrodynamic balance car includes left automobile body and right automobile body, the length of first connecting axle is greater than the second connecting axle, first connecting axle is located simultaneously left automobile body with in the right automobile body.

A two-wheeled electrodynamic balance car, comprising:

the outer rotor type hub motor comprises two motor bodies and a cross shaft, wherein two ends of the cross shaft are respectively positioned in the two motor bodies;

wherein the transverse shaft is a unitary piece.

According to the other two-wheeled electric balance car, two ends of the cross shaft are respectively positioned in the two outer rotor type hub motors, and one part of the cross shaft is directly formed or used as a connecting shaft of the outer rotor type hub motors, so that the number of shafts is further reduced, and the assembly process between the shafts is also reduced; the number of shafts is less, and the coaxiality is better; the whole automobile body of same root axle support, the wholeness of automobile body is better.

As an improvement, the two-wheeled electrodynamic balance car still includes left casing and right casing, left casing and/or right casing rotatable locate on the cross axle.

As an improvement, swing angle limiting structures are arranged among the left shell, the right shell and the transverse shaft.

As a refinement, the transverse axis has a translational dislocation section formed thereon.

As an improvement, at least one end of the transverse shaft is detachably connected with the motor main body.

According to the two-wheel electric balance car, the number of the shafts between the two outer rotor type hub motors is less, the assembling procedures between the shafts are naturally less, and the assembling efficiency is higher; the number of the shafts is small, and the coaxiality and reliability among the shafts are easier to ensure; a main stress point of the supporting vehicle body is transferred to the supporting positioning sleeve from the inter-shaft assembly, so that the supporting vehicle is safer and more reliable. Furthermore, one end of the same shaft is positioned in the motor main body and is positioned in the left shell and the right shell simultaneously to bear force, so that the integrity of the vehicle body is better; the translation dislocation section is formed on the connecting shaft, so that the assembly relation between the connecting shaft and the battery or other internal components is optimized, particularly for the installation of the battery, the battery is not required to be designed into a special-shaped structure with an avoiding center shaft groove, the tight assembly can be realized only by a conventional square standard battery, the cost is reduced, and the assembly is simplified; the connecting shaft is detachably connected with the motor main body, so that the assembly process is optimized, replacement and maintenance are facilitated, and packaging and transportation are facilitated.

Drawings

Fig. 1 is an exploded view (upside down) of a conventional two-wheeled electric balance vehicle.

Fig. 2 is an exploded view (upside down) of the two-wheeled electric balance car according to the first embodiment of the present invention.

Fig. 3 is a sectional view of a two-wheeled electric balance vehicle according to a first embodiment of the present invention (upside down, simplified processing of the inner structure of the outer rotor type in-wheel motor).

Fig. 4 is an exploded view (upside down, with tires shown) of the outer rotor type hub motor of the two-wheeled electric balance car according to the first embodiment of the present invention.

Fig. 5 is an exploded view showing the structure of an outer rotor type in-wheel motor of a two-wheeled electric balance car according to a first embodiment of the present invention (also showing a tire, hiding a coupling shaft, a washer, and an axial separation preventing member).

Fig. 6 is a sectional view of an outer rotor type in-wheel motor of a two-wheeled electric balance car according to a first embodiment of the present invention (also showing a tire, hiding a connecting shaft, a washer, an axial escape preventer).

Fig. 7 is an exploded view (upside down) of the two-wheeled electric balance vehicle according to the second embodiment of the present invention.

In the drawings, 1a, a first outer rotor type hub motor shaft; 1b, a second outer rotor type hub motor shaft; 1c, a middle shaft;

1. an outer rotor type hub motor; 1A, a first outer rotor type hub motor; 1B, a second outer rotor type hub motor;

11. a motor main body; 111. supporting the positioning sleeve; 112. an inner end cap; 113. an inner seal ring; 114. a stator; 115. an outer sealing ring; 116. an outer end cover;

12. a connecting shaft; 12A, a first connecting shaft; 12B, a second connecting shaft; 121. a cylindrical section; 122. an anti-drop section; 123. a first anti-rotation plane; 123. a translational dislocation section;

13. a gasket;

14. an axial anti-slip member;

15. a covering member; 151. buckling;

2. a horizontal axis;

3. a connecting assembly; 31. an upper connecting sheet; 32. a lower connecting sheet;

4. an angle screw;

5. a tire;

B. a battery.

Detailed Description

The technical solutions of the embodiments of the present invention will be explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and are not all embodiments. Other embodiments obtained by persons skilled in the art without any inventive work based on the embodiments in the embodiment belong to the protection scope of the utility model.

Example one

Referring to fig. 2 to 6, a two-wheeled electric balance car according to a first embodiment of the present invention includes:

the outer rotor type hub motor 1 comprises a first outer rotor type hub motor 1A and a second outer rotor type hub motor 1B, wherein the first outer rotor type hub motor 1A comprises a motor main body 11 and a first connecting shaft 12A, the second outer rotor type hub motor 1B comprises a motor main body 11 and a second connecting shaft 12B, one end of the first connecting shaft 12A is positioned in the motor main body 11 of the first outer rotor type hub motor 1, and one end of the second connecting shaft 12B is positioned in the motor main body 11 of the second outer rotor type hub motor 2;

the connecting assembly 3 is arranged on the radial outer side of the first connecting shaft 12A and the second connecting shaft 12B and is connected with the first connecting shaft 12A and the second connecting shaft 12B;

the first connecting shaft 12A is an integral piece, the second connecting shaft 12B is an integral piece, and only one assembling node is arranged between the first connecting shaft 12A and the second connecting shaft 12B.

In this embodiment, the first connecting shaft 12A and the second connecting shaft 12B are rotatably connected by the connecting assembly 3. The first connecting shaft 12A and the second connecting shaft 12B can rotate relatively within a certain range of angle, so that the two-wheeled electric balance car can be controlled.

In this embodiment, the connection assembly 3 is rotatable with the first connection shaft 12A, and the connection assembly 3 is fixedly connected with the second connection shaft 12B.

In this embodiment, the connecting assembly 3 includes an upper connecting piece 31 and a lower connecting piece 32, and the upper connecting piece 31 and the lower connecting piece 32 are fixedly connected by screws and clamp the first connecting shaft 12A and the second connecting shaft 12B.

In other embodiments, the connecting assembly may also be a round tubular coupling (not shown) with a necking groove, which receives and clamps the connecting shafts by deformation of the necking groove, wherein at least one of the connecting shafts may rotate in the round tubular coupling.

In this embodiment, the two-wheeled electrodynamic balance car still includes left casing and right casing, right casing includes right epitheca and right inferior valve, right epitheca, right inferior valve, upper connecting piece 31 and lower connecting piece 32 pass through the same set of screw rigid coupling.

In this embodiment, the first connecting shaft 12A has a radial protrusion, and the upper connecting piece 31 and the lower connecting piece 32 further form a radial positioning groove matched with the radial protrusion. The radial protrusion and the radial positioning groove are matched to axially position the connecting component 3 and the first connecting shaft 12A.

In this embodiment, the upper connecting sheet 31 and/or the lower connecting sheet 32 are further provided with a circumferential angle limiting groove, an angle screw 4 is arranged in the angle limiting groove, the first connecting shaft 12A is provided with a screw hole, and the angle screw 4 is screwed into the screw hole.

In this embodiment, the first outer rotor type in-wheel motor 1A is a left in-wheel motor, and the second outer rotor type in-wheel motor 1B is a right in-wheel motor. The first outer rotor type in-wheel motor 1A and the second outer rotor type in-wheel motor 1B are different in a first connecting shaft 1A and a second connecting shaft 1B.

In other embodiments, the first outer rotor type hub motor may be a right hub motor, and the second outer rotor type hub motor may be a left hub motor.

In this embodiment, the motor main body 11 includes a support positioning sleeve 111, an inner end cap 112, an inner sealing ring 113, a stator 114, an outer sealing ring 115, an outer end cap 116, and a rotor. The supporting and positioning sleeve 111 is tightly fitted to the central ring of the stator 114, and the friction between the supporting and positioning sleeve 111 and the stator 114 is large, so as to ensure the fixing between the supporting and positioning sleeve 111 and the stator 114. An inner seal ring 113 seals between the inner end cap 112 and the support positioning sleeve 111, and an outer seal ring 115 seals between the outer end cap 116 and the support positioning sleeve 111.

In this embodiment, the connecting shaft 12 enters the motor body 11 from the inner side of the motor body 11, and the connecting shaft 12 is disposed coaxially with the supporting and positioning sleeve 111 of the motor body 11. The outer rotor type in-wheel motor 1 further includes an axial escape preventing member 14, the axial escape preventing member 14 enters the motor body 11 from the outside of the motor body 11 and is detachably coupled to the coupling shaft 12, so that the motor body 11 can be detached in the outside direction. In the two-wheeled electric vehicle, the inside of the motor main body 11 is a region between the two motor main bodies 11. Through setting up axial anticreep piece 14, can assemble the connecting axle to the automobile body earlier, assemble motor main part and connecting axle together again, help promoting assembly efficiency and convenience.

In this embodiment, the axial anti-slip part 14 is a screw, an axial screw hole is formed in the connecting shaft 12, and the screw is screwed into the axial screw hole of the connecting shaft 12. The connecting shaft 12 and the supporting and positioning sleeve 111 are detachably connected by adopting a threaded connection structure, so that the anti-falling device is stable and reliable, and the operation is convenient and rapid.

In this embodiment, a washer 13 is provided between the axial separation preventing member 14, i.e., the screw, and the motor body 11. The washer 13 protects the surface of the motor body 11 from being scratched by the screw, and disperses the pressure of the screw against the motor body 11.

In this embodiment, one end of the connecting shaft 12 connected to the axial anti-separation member 14 includes a cylindrical section 121 and an anti-separation section 122 adjacent to the cylindrical section 121, and an outer diameter of the anti-separation section 122 is larger than that of the cylindrical section 121, so as to limit an axial inner side of the connecting shaft.

In this embodiment, under the action of the screw, the washer 13 abuts against the outside of the motor body 11, and the anti-falling section 122 of the connecting shaft 12 abuts against the inside of the motor body 11, so as to axially fix the connecting shaft 12 and the motor body 11.

In this embodiment, the supporting and positioning sleeve 111 does not protrude from the motor main body 11.

In this embodiment, an anti-rotation structure is disposed between the connecting shaft 12 and the supporting and positioning sleeve 111. The anti-falling section 122 of the connecting shaft 12 is generally in a circular truncated cone shape, the anti-falling section 122 forms a plurality of first anti-rotation planes 123 along the circumferential direction, the supporting locating sleeve 111 forms a plurality of second anti-rotation planes, and the first anti-rotation planes 123 are attached to the second anti-rotation planes so as to ensure that the connecting shaft 12 and the supporting locating sleeve 111 cannot rotate relatively. The first anti-rotation plane 123 and the second anti-rotation plane cooperate to form an anti-rotation structure.

In this embodiment, the supporting and positioning sleeve 111 is additionally provided, and because the axial fixation and the circumferential rotation prevention between the connecting shaft 12 and the motor main body 11 do not depend on the friction force between the connecting shaft 12 and the supporting and positioning sleeve 111, the assembly between the connecting shaft 12 and the supporting and positioning sleeve 111 can adopt clearance fit or transition fit.

In other embodiments, in order to prevent the relative rotation between the connecting shaft and the supporting and positioning sleeve, other anti-rotation structures can be adopted, such as: through key connection, or an anti-rotation groove is formed in the connecting shaft, and an anti-rotation lug and the like are arranged on the supporting and positioning sleeve.

In this embodiment, the supporting and positioning sleeve 111 is stepped, and has a first section engaged with the outer sealing ring 115, a second section engaged with the stator 114, a third section abutting against the stator 114, a fourth section limiting the inner sealing ring 113, and a fifth section engaged with the inner sealing ring 113. The first section to the fourth section are distributed from outside to inside, the outer diameters of the first section to the fourth section are sequentially increased, the fifth section is located at the innermost end, and the outer diameter of the fifth section is smaller than that of the fourth section.

In this embodiment, a covering member 15 is provided outside the axial anti-slip member 14, and the covering member 15 covers the axial anti-slip member 14. The covering member 15 covers the axial dislodgement prevention member 14, so that the appearance of the electric balance car is beautiful, and dust and impurities are prevented or reduced from reaching the axial dislodgement prevention member 14.

In this embodiment, the covering member 15 is clamped with the outer end cover 16 of the motor main body 11, and compared with the mode of screws and the like, the clamping is relatively attractive. And the clamping mode is adopted, so that the disassembly is relatively easy.

In other implementations, the covering member may be attached to the motor main body by other means such as adhesion.

In this embodiment, the inner side of the covering member 15 extends to form a buckle 151, the outer end cap 16 forms a clamping groove, and the buckle 151 is clamped with the clamping groove.

In this embodiment, the number of the hooks 151 on the covering member 15 is four and is uniformly distributed. The cover 15 is in the form of a cylindrical section 121. The covering member 15 is shaped to fit the motor main body 11 to obtain a better shape.

In this embodiment, a counterbore is formed on the outer side of the outer end cap 16, and the covering member 15 is located in the counterbore, so that the covering member 15 does not protrude from the outer end cap 16. The covering member 15 is substantially flush with the outer surface of the outer end cap 16. The support collar 111 is substantially flush with the outer surface of the inner end cap 112.

In this embodiment, the coupling shaft 12A of the first coupling shaft 12 of the first outer rotor type in-wheel motor 1A and the coupling shaft 12B of the second outer rotor type in-wheel motor 1B are fitted together by a pair of coupling members and are relatively rotatable.

In this embodiment, the translational dislocation section 123 is formed on the first connecting shaft 12A, the translational dislocation section 123 is arranged on the connecting shaft 12A, the influence of the tubular appearance of the connecting shaft 12 on the assembly of internal parts is reduced, the installation yielding space of the battery B or other internal parts is formed, the internal space can be effectively utilized, the assembly relation between the connecting shaft 12 and the battery B or other internal parts is optimized, especially for the installation of the battery B, the battery B does not need to be designed into a special-shaped structure with a recess for yielding the middle shaft, the tight assembly can be realized only by a conventional square standard battery, the cost is reduced, and the assembly is simplified. In addition, increased inner space, can hold large capacity standard shape battery, effectively increased the duration of balance car.

Formed in this embodiment, the translationally offset section 123 forms a receiving groove of substantially the "means" shape, the receiving groove opening being actually facing downwards, the battery B being mounted in the receiving groove from below to above.

In this embodiment, the sum of the axial lengths of the first connecting shaft 1A and the second connecting shaft 1B is slightly smaller than the axial length of the two-wheeled electric balance vehicle, which means that the first connecting shaft 1A and the second connecting shaft 1B have a smaller gap therebetween, the gap mainly adapts to the length of the transition section of the connecting assembly 32, the outer ends of the first connecting shaft and the second connecting shaft have a smaller distance from the two axial ends of the two-wheeled electric balance vehicle, and the smaller distance is mainly the thickness of the washer 13, the cap of the screw 14, and the thickness of the cover 15.

In this embodiment, the length of the first connecting shaft 1A is greater than that of the second connecting shaft 1B, and the first connecting shaft 1A is located in both the left housing and the right housing.

In the present embodiment, the first connecting shaft 12A and the second connecting shaft 12B are made of different materials.

In other embodiments, the same material may be used for the first connecting shaft and the second connecting shaft.

According to the two-wheel electric balance car disclosed by the embodiment I, the number of the shafts between the two outer rotor type hub motors is less, only two shafts are provided, the assembling process between the shafts is naturally less, the assembling efficiency is higher, and the use of screws between the connecting shaft and the transverse shaft is reduced; the number of the shafts is less, and the coaxiality between the shafts is better; one main stress point is transferred from the assembly position between the shafts to the connecting position of the shafts and the outer rotor type hub motor and transferred to the surface of the tire, namely the position where the surface of the tire is contacted with the horizontal plane, so that the number of easily-occurring fault points is reduced, and the safety and the reliability are higher.

Example two

Referring to fig. 5 to 7, a two-wheeled electric balance vehicle according to a second embodiment of the present invention includes:

the outer rotor type hub motor 1 comprises two motor bodies 11 and a cross shaft 2, wherein two ends of the cross shaft 2 are respectively positioned in the two motor bodies 11;

wherein the transverse shaft 2 is in one piece.

In this embodiment, the axial length of the cross shaft 2 is slightly smaller than that of the two-wheeled electric balance vehicle, and the outer end of the cross shaft 2 has a smaller distance from the two axial ends of the two-wheeled electric balance vehicle, and the smaller distance is mainly the thickness of the gasket 13, the cap of the screw 14 and the covering part 15.

In the two-wheeled electric balance car of the second embodiment of the utility model, the two ends of the cross shaft 2 are respectively positioned in the two motor main bodies 11, and a part of the cross shaft 2 is directly formed or used as a motor shaft of the outer rotor type hub motor, thereby further reducing the assembling process between the shafts.

In this embodiment, the two-wheeled electric balance car further includes a left housing and a right housing, and the left housing and/or the right housing are rotatably disposed on the cross shaft 2. The forward, backward and steering of the balance car are controlled by the relative rotation of the shell or the rotation of the cross shaft, and the relative rotation structure can be realized by adopting the known prior art.

In this embodiment, a swing angle limiting structure is provided between the left housing, the right housing and the cross shaft 2, and the swing angle limiting structure may be the same as that in the first embodiment.

In this embodiment, compared with the first embodiment, only one shaft is provided, and the relative rotation structure between the left shell and the right shell is adjusted correspondingly. The structure of the connecting assembly on the cross shaft 2, which is used for enabling the left shell and/or the right shell to be rotatably arranged, can refer to the connecting assembly in the first embodiment, the connecting assembly clamps the cross shaft 2, the connecting assembly is axially positioned with the cross shaft 2, a swing angle limiting structure is arranged between the connecting assembly and the cross shaft 2, and the connecting assembly is not fixed with the cross shaft 2.

According to the two-wheeled electric balance car disclosed by the embodiment II of the utility model, the number of the shafts between the two outer rotor type hub motors is smaller and only one shaft is needed, the assembling process between the shafts is naturally less, the assembling efficiency is higher, and the coaxiality is better; two main stress points are transferred to the supporting and positioning sleeve from the inter-shaft assembly part, so that the device is safer and more reliable.

While the utility model has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the utility model is not limited thereto but is intended to cover all modifications and equivalents as may be included within the spirit and scope of the utility model. Any modification which does not depart from the functional and structural principles of the utility model is intended to be included within the scope of the following claims.

Claims

1. The utility model provides a two-wheeled electrodynamic balance car which characterized in that: the two-wheeled electrodynamic balance car includes:

the outer rotor type hub motor (1) comprises a first outer rotor type hub motor (1A) and a second outer rotor type hub motor (1B), wherein the first outer rotor type hub motor (1A) comprises a motor main body (11) and a first connecting shaft (12A) with one end positioned in the motor main body (11), the second outer rotor type hub motor (1B) comprises a motor main body (11) and a second connecting shaft (12B) with one end positioned in the motor main body (11),

wherein there is only one assembly node between the first connecting shaft (12A) and the second connecting shaft (12B).

2. The two-wheeled electrodynamic balance car of claim 1, wherein: first connecting axle (12A) with second connecting axle (12B) rotates through locating coupling assembling (3) in its radial outside and connects, coupling assembling (3) with it is rotatable between first connecting axle (12A), coupling assembling (3) with second connecting axle (12B) rigid coupling.

3. The two-wheeled electrodynamic balance car of claim 2, wherein: the connecting assembly (3) comprises an upper connecting sheet (31) and a lower connecting sheet (32), the upper connecting sheet (31) and the lower connecting sheet (32) are fixedly connected through screws and clamp the first connecting shaft (12A) and the second connecting shaft (12B); or the connecting component (3) comprises a round tubular coupling with a necking groove.

4. The two-wheeled electrodynamic balance car of claim 3, wherein: the two-wheeled electric balance car further comprises a left shell and a right shell, the right shell comprises a right upper shell and a right lower shell, and the right upper shell, the right lower shell, the upper connecting sheet (31) and the lower connecting sheet (32) are fixedly connected through the same group of screws; the first connecting shaft (12A) is provided with a radial convex part, and the upper connecting piece (31) and the lower connecting piece (32) are also provided with radial positioning grooves matched with the radial convex part; the upper connecting piece (31) and/or the lower connecting piece (32) are/is further provided with a circumferential angle limiting groove, an angle screw (4) is arranged in the angle limiting groove, the first connecting shaft (12A) is provided with a screw hole, and the angle screw (4) is screwed into the screw hole.

5. The two-wheeled electrodynamic balance car of claim 1, wherein: the first connecting shaft (12A) is detachably connected with the motor main body (11), and/or the second connecting shaft (12B) is detachably connected with the motor main body (11).

6. The two-wheeled electrodynamic balance car of claim 5, wherein: motor body (11) include stator (114) and locate with tight fit stator (114) center circle support position sleeve (111), first connecting axle (12A) with second connecting axle (12B) insert respectively in one of them support position sleeve (111) and with support position sleeve (111) can dismantle the connection, support position sleeve (111) with first connecting axle (12A), second connecting axle (12B) coaxial setting.

7. The two-wheeled electrodynamic balance car of claim 6, wherein: the outer rotor type in-wheel motor (1) further comprises an axial anti-disengaging piece (14), the axial anti-disengaging piece (14) enters the motor body (11) from the outer side of the motor body (11) and is detachably connected with the first connecting shaft (12A) and the second connecting shaft (12B), and anti-rotating structures are arranged among the first connecting shaft (12A), the second connecting shaft (12B) and the supporting and positioning sleeve (111); the motor main body (11) comprises an outer sealing ring (115) and an inner sealing ring (113), the supporting and positioning sleeve (111) is provided with a first section matched with the outer sealing ring (115), a second section matched with the stator (114), a third section for abutting against the stator (114), a fourth section for limiting the inner sealing ring (113) and a fifth section matched with the inner sealing ring (113), the first section to the fourth section are distributed from outside to inside, the outer diameters of the first section to the fourth section are sequentially increased, the fifth section is located at the innermost end, and the outer diameter of the fifth section is smaller than that of the fourth section.

8. The two-wheeled electrodynamic balance car of claim 1, wherein: a translational dislocation section (123) is formed on the first connecting shaft (12A) and/or the second connecting shaft (12B); the two-wheeled electrodynamic balance car includes left automobile body and right automobile body, the length of first connecting axle (12A) is greater than second connecting axle (12B), first connecting axle (12A) are located simultaneously left automobile body with in the right automobile body.

9. The utility model provides a two-wheeled electrodynamic balance car which characterized in that: the two-wheeled electrodynamic balance car includes:

the outer rotor type hub motor (1) comprises two motor bodies (11) and a transverse shaft (2), wherein two ends of the transverse shaft (2) are respectively positioned in the two motor bodies (11);

wherein the transverse shaft (2) is in one piece.

10. The two-wheeled electrodynamic balance car of claim 9, wherein: the two-wheeled electric balance car further comprises a left shell and a right shell, the left shell and/or the right shell are/is rotatably arranged on the transverse shaft (2), and swing angle limiting structures are arranged among the left shell, the right shell and the transverse shaft (2); at least one end of the transverse shaft (2) is detachably connected with the motor main body (11); the transverse shaft (2) is provided with a translational dislocation section (123).