CN213414097U - Balance vehicle - Google Patents

Abstract

The utility model relates to a balance car, include: a first vehicle body; a second body facing the first body; and the limiting shaft group is axially connected with one end of the first vehicle body and the other end of the limiting shaft group is axially connected with the second vehicle body, and the limiting shaft group can use the central axis of the second vehicle body as a shaft to rotate relative to the second vehicle body. The technical scheme of the utility model be through the one end axial connection with spacing axle group on first automobile body and other end axial connection on the second automobile body to make spacing axle group can use the axis of second automobile body to rotate for the second automobile body for the axle, thereby realize rotatable formula between first automobile body and the second automobile body and be connected based on spacing axle group, and rotate the structure that the in-process relates to less, the equipment of being convenient for also can effectively practice thrift the cost, better suitability has.

Description

Balance vehicle

Technical Field

The utility model relates to an electrodynamic balance car technical field especially relates to a balance car.

Background

The operation principle of the electric balance vehicle, also called a somatosensory vehicle and a thinking vehicle, is mainly based on a basic principle called dynamic stability, a gyroscope and an acceleration sensor in the vehicle body are utilized to detect the change of the posture of the vehicle body, and a servo control system is utilized to accurately drive a motor to carry out corresponding adjustment so as to ensure the balance of the system. The existing electric balance car generally comprises a left car body mechanism and a right car body mechanism, the two car body mechanisms are usually connected through a connecting shaft, the whole structure of the connecting shaft is complicated, more parts are involved, the electric balance car is not convenient to assemble, and the production cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel balance car, rotatable connection structure is comparatively simple between two left and right automobile bodies in this balance car, and the cost can effectively be practiced thrift in the equipment of being convenient for.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a balance car comprising:

a first vehicle body;

a second body facing the first body; and a process for the preparation of a coating,

the limiting shaft set is axially connected to one end of the first vehicle body, axially connected to the other end of the second vehicle body, and capable of rotating relative to the second vehicle body by taking the central axis of the second vehicle body as a shaft.

Preferably, the limiting shaft set comprises at least three limiting shafts which are parallel and spaced, one end part of each limiting shaft on the same side is axially connected to the first vehicle body, the other end part of each limiting shaft on the same side is axially connected to the second vehicle body, and each limiting shaft can rotate relative to the second vehicle body by taking the central axis of the second vehicle body as a shaft.

Preferably, the limiting shaft group comprises:

one end of the first rotating shaft axially penetrates through the first vehicle body, and the other end of the first rotating shaft rotatably penetrates through the second vehicle body;

one end of the second rotating shaft axially penetrates through the first vehicle body, and the other end of the second rotating shaft rotatably penetrates through the second vehicle body; and a process for the preparation of a coating,

and one end of the third rotating shaft axially penetrates through the first vehicle body, and the other end of the third rotating shaft rotatably penetrates through the second vehicle body.

Preferably, the first vehicle body includes:

the first rotating shaft axially penetrates through the first assembling sleeve; and a process for the preparation of a coating,

the second assembly cover, the second assembly cover detachable connect in first assembly cover, first assembly cover with the homonymy terminal surface junction concatenation of second assembly cover is formed with a pair of first interface of piecing together, the second pivot reaches each is worn to locate by third pivot one-to-one first interface of piecing together.

Preferably, the second vehicle body includes:

the side surface of the third assembly sleeve facing the first vehicle body is provided with a first through hole, and the first rotating shaft is arranged in the first through hole in a penetrating manner and can rotate relative to the first through hole; and a process for the preparation of a coating,

the fourth assembling sleeve is detachably connected with the third assembling sleeve, a pair of second splicing ports is formed at the joint of the end faces of the third assembling sleeve and the end faces of the same side of the fourth assembling sleeve in a splicing mode, and the second rotating shaft and the third rotating shaft are rotatably arranged in the second splicing ports in a one-to-one correspondence mode.

Preferably, a pair of first limiting grooves is formed in the first assembly sleeve, and the axial end portions of the second rotating shaft and the third rotating shaft are correspondingly clamped in the first limiting grooves one by one; and/or the presence of a catalyst in the reaction mixture,

a pair of second limiting grooves is formed in the third assembling sleeve, and the axial end parts of the second rotating shaft and the third rotating shaft are in one-to-one corresponding rotatable clamping connection with the second limiting grooves.

Preferably, a first gasket is disposed between the first vehicle body and the second vehicle body, and a circumferential edge of the first gasket can abut against the first rotating shaft, the second rotating shaft, and the third rotating shaft.

Preferably, the fourth assembling sleeve is provided with a limiting block facing the end face of the second assembling sleeve, the limiting block can be abutted against the circumferential edge of the first gasket, and the thickness of the limiting block along the axial direction of the first gasket is smaller than the axial thickness of the first gasket.

Preferably, the opposite inner side surfaces of the first assembling sleeve and the second assembling sleeve are provided with first reinforcing ribs, and the opposite inner side surfaces of the third assembling sleeve and the fourth assembling sleeve are provided with second reinforcing ribs.

Preferably, when each of the limiting shafts rotates with the central axis of the first vehicle body as a shaft, an included angle between a vertical connecting line of the central axis of at least one of the limiting shafts and the central axis of the first vehicle body and the ground is always between 70 and 110 degrees.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model provides a balance car among the above-mentioned technical scheme is through the one end axial connection with spacing axle group on first automobile body and other end axial connection on the second automobile body to make spacing axle group can use the axis of second automobile body to rotate for the second automobile body as the axle, thereby realize rotatable formula between first automobile body and the second automobile body and be connected based on spacing axle group, the structure that relates to is less at the rotation in-process, the equipment of being convenient for, also can effectively practice thrift the cost, better suitability has.

Drawings

Fig. 1 is a schematic view of a balance car according to an embodiment of the present invention.

Fig. 2 is a schematic view of a part of the structure of the balance car shown in fig. 1.

Fig. 3 is a schematic view of a part of the structure of the balance car shown in fig. 1.

Fig. 4 is a schematic view of a part of the structure of the balance car shown in fig. 1.

Fig. 5 is a schematic view of a part of the structure of the balance car shown in fig. 1.

Fig. 6 is a schematic view of a part of the structure of the balance car shown in fig. 1.

Fig. 7 is a schematic view of a part of the structure of the balance car shown in fig. 1.

Fig. 8 is a schematic view of a part of the structure of the balance car shown in fig. 1.

100. A balance car; 10. a first vehicle body; 11. a first assembly sleeve; 111. a first limit groove; 12. a second assembly sleeve; 13. a first splicing interface; 20. a second vehicle body; 21. a third assembly sleeve; 211. a first port; 212. a second limit groove; 22. a fourth assembly sleeve; 23. a second splicing interface; 30. a limiting shaft group; 31. a limiting shaft; 311. a first rotating shaft; 312. a second rotating shaft; 313. a third rotating shaft; 40. a first gasket; 50. a limiting block; 60. a first reinforcing rib; 70. and a second reinforcing rib.

Detailed Description

The present invention will now be described in more detail with reference to the accompanying drawings, and it is to be understood that the following description of the present invention is made only by way of illustration and not by way of limitation with reference to the accompanying drawings. The various embodiments may be combined with each other to form other embodiments not shown in the following description.

Referring to fig. 1 to 3, an embodiment of the present invention provides a novel balance car 100, and the balance car 100 has a simple structure, is convenient to assemble and disassemble, and has good applicability.

This balance car 100 includes: the motorcycle comprises a first vehicle body 10, a second vehicle body 20 and a limiting shaft group 30, wherein the first vehicle body 10 and the second vehicle body 20 are oppositely arranged; one end of the limiting shaft set 30 is axially connected to the first vehicle body 10, the other end is axially connected to the second vehicle body 20, the central axis of the first vehicle body 10 coincides with the central axis of the second vehicle body 20, the limiting shaft set 30 can rotate based on the rotation of the first vehicle body 10, and the limiting shaft set 30 can rotate relative to the second vehicle body 20 by using the central axis of the second vehicle body 20 as a shaft.

It can be understood that, when the first vehicle body 10 drives the first vehicle body 10 to rotate under the action of the external force, the limiting shaft group 30 will rotate under the drive of the first vehicle body 10 by taking the central axis of the second vehicle body 20 as the shaft; and, when the second vehicle body 20 is rotated by an external force, the second vehicle body 20 can also be rotated with respect to the restraining shaft group 30.

In one embodiment, the limiting shaft assembly 30 includes at least three limiting shafts 31, i.e., a first rotating shaft 311, a second rotating shaft 312 and a third rotating shaft 313, the limiting shafts 31 are arranged in parallel and spaced apart from each other, one end of each limiting shaft 31 is axially connected to the first vehicle body 10, the other end of each limiting shaft 31 is axially connected to the second vehicle body 20, and each limiting shaft 31 can rotate relative to the second vehicle body 20 with the central axis of the second vehicle body 20 as the axis. In addition, the number of the limiting shafts 31 in the limiting shaft group 30 is preferably six or eight, and each limiting shaft 31 can be uniformly distributed along the circumferential direction so as to uniformly share the pressure formed when a user stands on the balance car 100, thereby effectively avoiding the occurrence of the locking phenomenon.

In addition, through holes (not shown) for passing the lead wires are correspondingly formed in the axial end surfaces of the first vehicle body 10 and the second vehicle body 20, and the through holes are located in the middle area surrounded by the three stopper shafts 31.

In one embodiment, in order to overcome the defect that when a user stands on the balance car 100, the position where the first car body 10 is connected with the second car body 20 is prone to dent deformation and jamming due to excessive stress, in the process that each limiting shaft 31 rotates relative to the second car body 20, an included angle between a vertical connecting line of a central axis of at least one limiting shaft 31 and a central axis of the second car body 20 and the ground is always between 70 ° and 110 °, so that each limiting shaft 31 can share part of component force uniformly, and the phenomenon that the balance car 100 deforms or jams due to large bearing stress is avoided.

In one embodiment, in order to overcome the defect that the connection position between the first vehicle body 10 and the second vehicle body 20 is prone to be deformed due to excessive stress when a user stands on the balance car 100, in the process that each limiting shaft 31 rotates relative to the second vehicle body 20, an included angle between a vertical connecting line of a central axis of at least one limiting shaft 31 and a central axis of the second vehicle body 20 and the ground is always 90 °.

In one embodiment, one end of the first rotating shaft 311 is axially disposed on the first vehicle body 10, and the other end thereof is rotatably disposed on the second vehicle body 20, so that when the first vehicle body 10 rotates, the first rotating shaft 311 is driven to rotate relative to the second vehicle body 20 with the central axis of the second vehicle body 20 as the axis; one end of the second rotating shaft 312 axially penetrates the first vehicle body 10, and the other end rotatably penetrates the second vehicle body 20, so that when the first vehicle body 10 rotates, the second rotating shaft 312 is driven to rotate relative to the second vehicle body 20 by taking the central axis of the second vehicle body 20 as an axis; one end of the third rotating shaft 313 axially penetrates the first vehicle body 10, and the other end rotatably penetrates the second vehicle body 20, so that when the first vehicle body 10 rotates, the third rotating shaft 313 is driven to rotate relative to the second vehicle body 20 by taking the central axis of the second vehicle body 20 as an axis, as shown in fig. 3.

Referring also to fig. 4, the first vehicle body 10 includes: the balance car 100 comprises a first assembly sleeve 11 and a second assembly sleeve 12, wherein the first assembly sleeve 11 and the second assembly sleeve 12 are detachably connected to form a cavity for accommodating other structures or parts of the balance car 100 based on splicing of the first assembly sleeve 11 and the second assembly sleeve 12; one end of the first rotating shaft 311 is axially inserted into the first assembling sleeve 11, and the other end is rotatably inserted into the second vehicle body 20. In addition, the first assembling sleeve 11 and the second assembling sleeve 12 are spliced at the position where the axial end faces are connected to form a pair of first splicing ports 13, the second rotating shaft 312 and the third rotating shaft 313 are correspondingly arranged in the first splicing ports 13 in a penetrating manner, and the inner diameter of each first splicing port 13 is the same as the cross section diameter of the second rotating shaft 312 and the cross section diameter of the third rotating shaft 313, so that the second rotating shaft 312 and the third rotating shaft 313 can be driven to rotate in the same direction in the rotating process of the first vehicle body 10.

In addition, referring to fig. 5, in order to prevent the second rotating shaft 312 and the third rotating shaft 313 from separating from the first vehicle body 10, a pair of first limiting grooves 111 are formed in the first assembling sleeve 11, and the axial end portions of the second rotating shaft 312 and the third rotating shaft 313 are correspondingly clamped in the first limiting grooves 111 one by one, so that the axial end portions of the second rotating shaft 312 and the third rotating shaft 313 are always located in the corresponding first limiting grooves 111.

It can be understood that the end of the second rotating shaft 312 penetrating into the first vehicle body 10 forms a first abutting portion (not shown) engaged with the first limiting groove 111, and the first abutting portion can abut against the axial inner side surface of the first assembling sleeve 11, so as to limit the second rotating shaft 312 in the first limiting groove 111; the end of the third rotating shaft 313 penetrating into the first vehicle body 10 forms a second abutting part (not shown) which is engaged with the other first limiting groove 111, and the second abutting part can abut against the axial inner side surface of the first assembling sleeve 11, so that the third rotating shaft 313 is limited in the first limiting groove 111; meanwhile, notches opposite to the first limiting grooves 111 can be formed on the second assembling sleeve 12, so that the first abutting part and the second abutting part can be limited in the radial direction.

Further, a third abutting portion abutting against the axial inner side surface of the first mounting sleeve 11 is formed at an end portion of the first shaft 311 penetrating into the first vehicle body 10, so that the first shaft 311 is fixed and restrained to the first mounting sleeve 11 based on the abutting engagement of the third abutting portion with the first mounting sleeve 11.

In one embodiment, referring to fig. 6, the second vehicle body 20 includes: the third assembling sleeve 21 and the fourth assembling sleeve 22 are detachably connected, and a cavity for accommodating other parts of the balance car 100 is formed between the third assembling sleeve 21 and the fourth assembling sleeve 22; a first through hole 211 is formed in the axial side surface of the third assembling sleeve 21 facing the first assembling sleeve 11, and the axial end part, far away from the first assembling sleeve 11, of the first rotating shaft 311 passes through the first through hole 211 and extends into the third assembling sleeve 21; the connecting positions of the end faces of the fourth assembling sleeve 22 and the third assembling sleeve 21 on the same side are spliced to form a pair of second splicing ports 23, and the end parts of the second rotating shaft 312 and the third rotating shaft 313 on the same side are rotatably arranged at the second splicing ports 23 in a one-to-one correspondence manner.

It can be understood that when the first rotating shaft 311, the second rotating shaft 312 and the third rotating shaft 313 rotate around the central axis of the second vehicle body 20, the first rotating shaft 311 can rotate in the first through hole 211, and the second rotating shaft 312 and the third rotating shaft 313 respectively rotate in the corresponding second joint 23; wherein, the shape of interface 23 is all pieced together to first port 211, each second is the arc to even interval arrangement between interface 23 is pieced together to first port 211, each second, and each second is pieced together interface 23 and is used the axis of the second automobile body 20 to set up as axial symmetry, the assembly and disassembly of the balance car 100 of also being convenient for.

In addition, referring to fig. 7, in order to prevent the second rotating shaft 312 and the third rotating shaft 313 from separating from the second vehicle body 20, a pair of second limiting grooves 212 are formed in the third assembling sleeve 21, and the axial end portions of the second rotating shaft 312 and the third rotating shaft 313 are rotatably engaged in the second limiting grooves 212 in a one-to-one correspondence manner, so that during the rotation of the second rotating shaft 312 and the third rotating shaft 313, the axial end portions of the second rotating shaft 312 and the third rotating shaft 313 are always located in the corresponding second limiting grooves 212.

It can be understood that the end of the second rotating shaft 312 penetrating into the second vehicle body 20 forms a third abutting portion (not shown) engaged with the second limiting groove 212, and the third abutting portion can abut against the axial inner side surface of the third assembling sleeve 21, so as to limit the second rotating shaft 312 in the second limiting groove 212; the end of the third rotating shaft 313 penetrating into the second vehicle body 20 forms a fourth abutting part (not shown) which is engaged with the other second limiting groove 212 in a clamping manner, and the fourth abutting part can abut against the axial inner side surface of the third assembling sleeve 21, so that the third rotating shaft 313 is limited in the second limiting groove 212; meanwhile, notches opposite to the second limiting grooves 212 can also be formed in the fourth assembling sleeve 22, and the third abutting portion and the fourth abutting portion correspond to the second splicing ports one by one so as to perform radial limiting on the third abutting portion and the fourth abutting portion.

Further, a screw is formed at an end portion of the first shaft 311 that penetrates the first through hole 211, and a nut (not shown) is provided at an end portion of the first shaft 311 that penetrates the first through hole 211, and the nut is screwed to the end portion of the first shaft 311 so as to be capable of abutting against an inner surface of the third packing sleeve 21, thereby achieving a purpose of restraining the first shaft 311 against the first packing sleeve 11.

In one embodiment, referring to fig. 8, in the process of relative rotation of the first vehicle body 10 and the second vehicle body 20, in order to avoid abrasion of the opposite end surfaces of the first vehicle body 10 and the second vehicle body 20, a first shim 40 is further disposed between the first vehicle body 10 and the second vehicle body 20, the first shim 40 is located in a hollow space surrounded by the first rotating shaft 311, the second rotating shaft 312 and the third rotating shaft 313, that is, a circumferential edge of the first shim 40 can abut against circumferential outer side surfaces of the first rotating shaft 311, the second rotating shaft 312 and the third rotating shaft 313. It will be appreciated that the stop block 50 is integrally formed with the fourth sleeve 22.

In addition, in order to prevent the first gasket 40 from falling off, a stopper 50 is further installed on an end surface of the fourth assembly sleeve 22 facing the second assembly sleeve 12, the stopper 50 and the first rotating shaft 311 are symmetrically disposed about the central axis of the second vehicle body 20, and the stopper 50 also abuts against a circumferential edge of the first gasket 40, so that the first gasket 40 is radially limited by cooperation of the first rotating shaft 311, the second rotating shaft 312, the third rotating shaft 313 and the stopper 50.

It should be noted that, in order to avoid wearing the stopper 50, the thickness of the stopper 50 along the axial direction of the first pad 40 is smaller than the axial thickness of the first pad 40, so that a space is always present between the stopper 50 and the first vehicle body 10.

In one embodiment, in order to increase the overall structural strength of the balance car 100, the first reinforcing ribs 60 are provided on the inner side surfaces of the first assembly sleeve 11 and the second assembly sleeve 12, and the second reinforcing ribs 70 are provided on the inner side surfaces of the third assembly sleeve 21 and the fourth assembly sleeve 22.

In addition, a pair of first stopper grooves 111 is formed between the first rib 60 located in the first assembly sleeve 11 and the inner side surface of the first assembly sleeve 11, and the axial end portions of the second rotating shaft 312 and the third rotating shaft 313 can directly abut against the first rib 60, that is, the second rotating shaft 312 and the third rotating shaft 313 are axially stopped by the first rib 60. The larger the contact area between the second rotating shaft 312 and the first reinforcing rib 60, the larger the pressure born by the second rotating shaft 312 and the third rotating shaft 313, and the smaller the pressure born by the third rotating shaft 313, the more difficult the damage is.

Meanwhile, a pair of second limiting grooves 212 is formed between the second reinforcing rib 70 positioned in the third assembling sleeve 21 and the inner side surface of the third assembling sleeve 21, and the axial end portions of the second rotating shaft 312 and the third rotating shaft 313 can be directly abutted against the second reinforcing rib 70, that is, the second rotating shaft 312 and the third rotating shaft 313 are axially limited based on the second reinforcing rib 70. The larger the contact area between the second rotating shaft 312 and the second reinforcing rib 70, the larger the contact area between the third rotating shaft 313 and the second reinforcing rib 70, the smaller the pressure borne by the second rotating shaft 312 and the third rotating shaft 313, and the more difficult damage to the rotor is.

The rotation process of the balance car 100 provided in the above embodiments can be described as follows:

in the process of driving the balance car 100, a user may apply an external force to rotate the first car body 10, and the first car body 10 drives the first rotating shaft 311, the second rotating shaft 312 and the third rotating shaft 313 to rotate in the same direction; alternatively, the user applies an external force to the second body 20, and the second body 20 is rotatable with respect to the first rotation shaft 311, the second rotation shaft 312, and the third rotation shaft 313. It can be understood that, a user can also apply an external force to the first vehicle body 10 and the second vehicle body 20 at the same time, so that the first vehicle body 10 and the second vehicle body 20 rotate at the same time, and then the first rotating shaft 311, the second rotating shaft 312 and the third rotating shaft 313 all rotate relative to the second vehicle body 20 with the central axis of the second vehicle body 20 as the axis, thereby effectively improving the damping feeling when the first vehicle body 10 and the second vehicle body 20 rotate relative to each other, enhancing the control feeling when the user drives the balance vehicle 100, and effectively improving the experience effect of the user.

The balance car 100 provided in each of the above embodiments axially connects one end of the limiting shaft assembly 30 to the first car body 10 and axially connects the other end of the limiting shaft assembly 30 to the second car body 20, and the limiting shaft assembly 30 can rotate relative to the second car body 20 with the central axis of the second car body 20 as the axis, so that the first car body 10 and the second car body 20 can be rotatably connected based on the limiting shaft assembly 30.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (9)

1. A balance car, characterized by comprising:

a first vehicle body (10);

a second vehicle body (20), the second vehicle body (20) being directly opposite to the first vehicle body (10); and a process for the preparation of a coating,

a limiting shaft group (30), wherein one end of the limiting shaft group (30) is axially connected to the first vehicle body (10), and the other end of the limiting shaft group (30) is axially connected to the second vehicle body (20);

the limiting shaft group (30) comprises at least three limiting shafts (31) which are parallel and spaced, one end part of each limiting shaft (31) on the same side is axially connected to the first vehicle body (10), the other end part of each limiting shaft (31) on the same side is axially connected to the second vehicle body (20), and each limiting shaft (31) can rotate relative to the second vehicle body (20) by taking the central axis of the second vehicle body (20) as a shaft.

2. The balance vehicle of claim 1, wherein the set of limit axles (30) comprises:

one end of the first rotating shaft (311) axially penetrates through the first vehicle body (10), and the other end of the first rotating shaft (311) rotatably penetrates through the second vehicle body (20);

one end of the second rotating shaft (312) axially penetrates through the first vehicle body (10), and the other end of the second rotating shaft (312) rotatably penetrates through the second vehicle body (20); and a process for the preparation of a coating,

one end of the third rotating shaft (313) axially penetrates through the first vehicle body (10), and the other end of the third rotating shaft (313) rotatably penetrates through the second vehicle body (20).

3. The balance vehicle of claim 2, wherein the first vehicle body (10) comprises:

the first assembling sleeve (11), the first rotating shaft (311) axially penetrates through the first assembling sleeve (11); and a process for the preparation of a coating,

second equipment cover (12), second equipment cover (12) detachable connect in first equipment cover (11), first equipment cover (11) with the homonymy terminal surface junction concatenation of second equipment cover (12) is formed with a pair of first interface (13) of piecing together, second pivot (312) and third pivot (313) one-to-one wears to locate each first interface (13) of piecing together.

4. The balance vehicle of claim 3, wherein the second vehicle body (20) comprises:

the side surface, facing the first vehicle body (10), of the third assembling sleeve (21) is provided with a first through hole (211), and the first rotating shaft (311) penetrates through the first through hole (211) and can rotate relative to the first through hole (211); and a process for the preparation of a coating,

fourth assembled cover (22), fourth assembled cover (22) detachable connect in third assembled cover (21), third assembled cover (21) with the homonymy terminal surface junction concatenation of fourth assembled cover (22) is formed with a pair of second and pieces together interface (23), second pivot (312) and third pivot (313) one-to-one rotatable formula is worn to locate each in the second pieces together interface (23).

5. The balance car of claim 4, wherein a pair of first limiting grooves (111) are formed in the first assembly sleeve (11), and axial end portions of the second rotating shaft (312) and the third rotating shaft (313) are correspondingly clamped in the first limiting grooves (111) one by one; and/or the presence of a catalyst in the reaction mixture,

a pair of second limiting grooves (212) is formed in the third assembling sleeve (21), and the axial end parts of the second rotating shaft (312) and the third rotating shaft (313) are correspondingly and rotatably clamped in the second limiting grooves (212) in a one-to-one rotating manner.

6. The balance car of claim 4, wherein a first shim (40) is mounted between the first car body (10) and the second car body (20), and a circumferential edge of the first shim (40) is capable of abutting against the first rotating shaft (311), the second rotating shaft (312) and the third rotating shaft (313).

7. The balance vehicle according to claim 6, wherein an end surface of the fourth assembly sleeve (22) facing the second assembly sleeve (12) is provided with a limit block (50), the limit block (50) can abut against a circumferential edge of the first gasket (40), and a thickness of the limit block (50) along an axial direction of the first gasket (40) is smaller than an axial thickness of the first gasket (40).

8. The balance car of claim 4, wherein the opposite inner sides of the first assembly sleeve (11) and the second assembly sleeve (12) are provided with first reinforcing ribs (60), and the opposite inner sides of the third assembly sleeve (21) and the fourth assembly sleeve (22) are provided with second reinforcing ribs (70).

9. The balance car of claim 1, wherein when each of the restraining shafts (31) rotates about the central axis of the first car body (10), an included angle between a vertical connecting line of the central axis of at least one of the restraining shafts (31) and the central axis of the first car body (10) and the ground is always between 70 ° and 110 °.

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