An electric balance car

Abstract

The invention discloses an electric balancing vehicle, when the right vehicle body rotates relative to the left vehicle body, the extension shaft is driven to rotate, and the extension shaft drives the main spring bracket on the left vehicle body to rotate, the rotation of the main spring bracket drives the left return spring and the right return spring to twist, and at the same time the left return spring and the right return spring respectively drive the left spring bracket and the right spring bracket to rotate, the left spring bracket is limited by the left bearing seat clockwise and has a certain activity space counterclockwise, the right spring bracket is limited by the right bearing seat counterclockwise and has a certain activity space clockwise, when the right vehicle body rotates clockwise or counterclockwise, one of the left return spring or the right return spring will inevitably generate a restoring force, and under the action of the restoring force, the right vehicle body returns to a relatively balanced position with the left vehicle body; similarly, when the left vehicle body rotates relative to the right vehicle body, the left vehicle body drives the left bearing seat and the right bearing seat to rotate, and the relative balance of the left vehicle body and the right vehicle body is achieved through the transmission chain of opposite forces, the structure is simple and the cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of balancing vehicles, and in particular to an electric balancing vehicle. Background Art

[0002] The balance bike is a flexible and compact means of short-distance transportation. Many young people also regard riding a balance bike as a fashionable sport. Therefore, manufacturers continue to develop this product in depth, constantly exploring and innovating in the fields of function, appearance and production control.

[0003] The electric balancing car mainly detects the posture changes of the car body through the detection and control device, and drives the motor to rotate based on the principle of dynamic stability to achieve the balance of the moving car body. The existing balancing car detection and control device mainly includes: a gyroscope, a sub-board microcontroller, a main control microcontroller and a motor drive control circuit. Under normal power supply conditions, the gyroscope outputs a posture signal according to the posture of the car body and transmits it to the sub-board microcontroller. The sub-board microcontroller reads the posture signal and compares and calculates the comparison result representing the deviation of the car body posture and transmits it to the main control board microcontroller. The main control board microcontroller reads the comparison result and performs calculation processing to obtain the PWM wave control signal of the balancing car body posture and outputs it to the motor drive circuit. The motor drive circuit outputs a drive signal to drive the motor to work to control the body balance of the balancing car.

[0004] Although the existing self-balancing vehicle detection and control device can achieve the effect of controlling the balance of the self-balancing vehicle, the data is read and calculated twice by the auxiliary board microcontroller and the main control board microcontroller, which will cause delays, which is manifested as light load jumps in the self-balancing vehicle industry. In addition, the use of the auxiliary board microcontroller makes the processing technology of the detection and control device complicated and the processing cost is high.

[0005] In summary, the existing balancing vehicle detection and control device has technical problems such as light load vibration, complex process and high cost. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an electric balancing vehicle that achieves balance adjustment through a mechanical structure.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] An electric balancing vehicle comprises a left vehicle body and a right vehicle body, and also comprises a main body bracket, wherein the main body bracket is fixedly connected to the right vehicle body, and an extension shaft of the main body bracket extends into the left vehicle body;

[0009] The left vehicle body is provided with a main spring bracket, a left spring bracket, a right spring bracket, a left return spring, a right return spring, a left support bearing and a right support bearing; the left support bearing, the left spring bracket, the left return spring, the main spring bracket, the right return spring, the right spring bracket and the right support bearing are arranged in sequence from left to right;

[0010] The outer rings of the left support bearing and the right support bearing are fixedly arranged in the left vehicle body, and the extension shaft passes through the right support bearing, the right spring bracket, the right return spring, the main spring bracket, the left return spring, the left spring bracket and the left support bearing from right to left in sequence;

[0011] The two ends of the left return spring are respectively fixed to the right side of the left spring bracket (or other parts of the left spring bracket) and the left side of the main spring bracket, and the two ends of the right return spring are respectively fixed to the right side of the main spring bracket and the right spring bracket (or the left side of the right spring bracket);

[0012] The extension shaft is tightly sleeved in the main spring bracket, and the extension shaft movably passes through the left spring bracket and the right spring bracket;

[0013] A first arc-shaped retaining ring is arranged on the left outer ring of the left spring bracket, and the first arc-shaped retaining ring is located at the lower part of the left bearing seat, and the front side of the first arc-shaped retaining ring abuts against the lower part of the front side of the left bearing seat; the rear side of the first arc-shaped retaining ring is located at the lower part of the rear side of the left bearing seat, and is arranged at a certain distance;

[0014] A second arc-shaped retaining ring is arranged on the right outer ring of the right spring bracket, and the second arc-shaped retaining ring is located at the lower part of the right bearing seat, and the front upper part of the second arc-shaped retaining ring is arranged at a certain distance from the front side of the right bearing seat, and the rear upper part of the second arc-shaped retaining ring is arranged adjacent to the rear upper part of the right bearing seat;

[0015] When the right vehicle body rotates relative to the left vehicle body, the extension shaft is driven to rotate, and the extension shaft drives the main spring bracket to rotate. The rotation of the main spring bracket drives the left return spring and the right return spring to twist, and the left return spring and the right return spring generate a restoring force. At the same time, the left return spring drives the left spring bracket to rotate, and the right return spring drives the right spring bracket to rotate. The left spring bracket is limited clockwise and has a certain activity space counterclockwise, and the right spring bracket is limited counterclockwise and has a certain activity space clockwise. Under the restoring force of the left return spring and the right return spring, the right vehicle body returns to a relative balanced position with the left vehicle body.

[0016] When the left vehicle body rotates relative to the right vehicle body, the left bearing seat or the right bearing seat drives the left spring bracket and the right spring bracket to rotate. The left spring bracket is limited clockwise and has a certain space for movement counterclockwise, and the right spring bracket is limited counterclockwise and has a certain space for movement clockwise, and at the same time drives the left return spring and the right return spring to twist. The left return spring and the right return spring drive the extension shaft to rotate, and the extension shaft transmits the rotation to the main spring bracket and the right vehicle body, so that the right vehicle body generates a force to drive the left vehicle body to return to relative stillness.

[0017] Preferably, the left return spring and the right return spring are cylindrical spiral springs;

[0018] A first spring hole is arranged on the right side of the left spring bracket, a second spring hole and a third spring hole are arranged on the left and right sides of the main spring bracket respectively, and a fourth spring hole is arranged on the left side of the right spring bracket;

[0019] Clamps are arranged at both ends of the left return spring, and the two clamps are respectively clamped into the first spring hole and the second spring hole;

[0020] Clamps are arranged at both ends of the right return spring, and the two clamps are respectively clamped into the third spring hole and the fourth spring hole.

[0021] Preferably, a first annular clamping edge extends from the right side of the left spring bracket, a first hole cavity and a second annular protrusion are provided on the left side of the main spring bracket, the first annular clamping edge is inserted into the first hole cavity, and the left return spring is sleeved on the outside of the second annular protrusion.

[0022] Preferably, a second annular clamping edge extends from the right side of the right spring bracket, a second hole cavity and a fourth annular protrusion are provided on the right side of the main spring bracket, the second annular clamping edge is inserted into the second hole cavity, and the right return spring is sleeved on the outside of the fourth annular protrusion.

[0023] Preferably, a first limiting protrusion is arranged on the first annular clamping edge, a first limiting groove is arranged on the cavity of the first cavity, the first limiting groove extends circumferentially along the peripheral wall of the first cavity at a central angle of 5 to 30°, and the first limiting protrusion is located at the rear limit position of the first limiting groove; (when the left spring bracket rotates relative to the main spring bracket,)

[0024] A second limiting protrusion is arranged on the second annular clamp edge, a second limiting groove is arranged on the cavity of the second cavity, the second limiting groove extends circumferentially along the peripheral wall of the second cavity at a central angle of 5 to 30 degrees, and the second limiting protrusion is located at the front limit position of the second limiting groove.

[0025] Preferably, the first arc-shaped retaining ring and the first limiting protrusion are respectively located on two opposite sides of the left spring bracket;

[0026] The second arc-shaped retaining ring and the second limiting protrusion are respectively located on two opposite sides of the right spring bracket.

[0027] Preferably, the right vehicle body comprises a right upper cover and a right bottom cover, the right upper cover is buckled on the upper part of the right bottom cover, and a receiving cavity for receiving the main body of the main body bracket is formed between the right upper cover and the right bottom cover;

[0028] Preferably, the left vehicle body includes a left upper cover and a left bottom cover, the left upper cover is buckled onto the upper portion of the left bottom cover, and a receiving cavity for receiving the main spring bracket, the left spring bracket, the right spring bracket, the left return spring, the right return spring, the left support bearing and the right support bearing is formed between the left upper cover and the left bottom cover.

[0029] Preferably, it also includes a left wheel and a right wheel, the left wheel is connected to the left side of the left vehicle body, and the right wheel is connected to the right side of the right vehicle body.

[0030] Preferably, a first anti-skid plate is provided on the upper portion of the left upper cover, and a second anti-skid plate is provided on the upper portion of the right upper cover.

[0031] Preferably, a horn is provided inside the left vehicle body.

[0032] The present invention discloses an electric balancing vehicle, comprising a left vehicle body and a right vehicle body, and further comprising a main body bracket, wherein the main body bracket is fixedly connected to the right vehicle body, and an extension shaft of the main body bracket extends into the left vehicle body;

[0033] The left vehicle body is provided with a main spring bracket, a left spring bracket, a right spring bracket, a left return spring, a right return spring, a left support bearing and a right support bearing; the left support bearing, the left spring bracket, the left return spring, the main spring bracket, the right return spring, the right spring bracket and the right support bearing are arranged in sequence from left to right;

[0034] The outer rings of the left support bearing and the right support bearing are fixedly arranged in the left vehicle body, and the extension shaft passes through the right support bearing, the right spring bracket, the right return spring, the main spring bracket, the left return spring, the left spring bracket and the left support bearing from right to left in sequence;

[0035] The two ends of the left return spring are respectively fixed to the left spring bracket and the left side of the main spring bracket, and the two ends of the right return spring are respectively fixed to the right side of the main spring bracket and the right spring bracket;

[0036] The extension shaft is tightly sleeved in the main spring bracket, and the extension shaft movably passes through the left spring bracket and the right spring bracket;

[0037] A first arc-shaped retaining ring is arranged on the left outer ring of the left spring bracket, and the first arc-shaped retaining ring is located at the lower part of the left bearing seat, and the front side of the first arc-shaped retaining ring abuts against the lower part of the front side of the left bearing seat; the rear side of the first arc-shaped retaining ring is located at the lower part of the rear side of the left bearing seat, and is arranged at a certain distance;

[0038] A second arc-shaped retaining ring is arranged on the right outer ring of the right spring bracket, and the second arc-shaped retaining ring is located at the lower part of the right bearing seat, and the front upper part of the second arc-shaped retaining ring is arranged at a certain distance from the front side of the right bearing seat, and the rear upper part of the second arc-shaped retaining ring is arranged adjacent to the rear upper part of the right bearing seat;

[0039] When the left vehicle body rotates relative to the right vehicle body, the left bearing seat or the right bearing seat drives the left spring bracket and the right spring bracket to rotate. The left spring bracket is limited clockwise and has a certain activity space counterclockwise, and the right spring bracket is limited counterclockwise and has a certain activity space clockwise. At the same time, it drives the left return spring and the right return spring to twist. The left return spring and the right return spring drive

[0040] The extension shaft rotates, and the extension shaft transmits the rotation to the main spring bracket and the right vehicle body, so that the right vehicle body generates a force to drive the left vehicle body to return to relative stillness.

[0041] An electric balancing vehicle comprises a left vehicle body and a right vehicle body, and also comprises the above-mentioned other structures, wherein the arrangement of the other structures is bilaterally symmetrical and interchangeable with the above-mentioned other structures.

[0042] The beneficial effects of the present invention are as follows: in an electric balancing vehicle, when the right vehicle body rotates relative to the left vehicle body, the extension shaft is driven to rotate, and the extension shaft drives the main spring bracket on the left vehicle body to rotate, and the rotation of the main spring bracket drives the left return spring and the right return spring to twist, and at the same time, the left return spring and the right return spring respectively drive the left spring bracket and the right spring bracket to rotate, the left spring bracket is limited by the left bearing seat clockwise and has a certain activity space counterclockwise, and the right spring bracket is limited by the right bearing seat counterclockwise and has a certain activity space clockwise, when the right vehicle body rotates clockwise or counterclockwise, one of the left return spring or the right return spring will inevitably generate a restoring force, and under the action of the restoring force, the right vehicle body recovers. When the left vehicle body rotates relative to the right vehicle body, the left vehicle body drives the left bearing seat and the right bearing seat to rotate, and the left bearing seat and the right bearing seat respectively drive the left spring bracket and the right spring bracket to rotate through the first arc-shaped retaining ring and the second arc-shaped retaining ring, and the rotation of the left spring bracket and the right spring bracket respectively drives the left return spring and the right return spring to rotate, and at the same time transmits the rotational force to the main spring bracket, and the main spring bracket is relatively fixed to the main bracket, thereby generating a reverse restoring force, driving the left vehicle body to return to a balanced position relative to the right vehicle body. This scheme realizes the relative self-balancing of the left and right vehicle bodies through a mechanical structure, and has a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 The invention is an exploded diagram of a self-balancing structure of an electric balancing vehicle.

[0044] Figure 2 The present invention is a schematic diagram of a self-balancing structure of an electric balancing vehicle (including the right wheel).

[0045] Figure 3 The present invention is a structural schematic diagram of a main spring bracket for an electric balancing vehicle.

[0046] Figure 4 The present invention is a structural schematic diagram of an electric balancing vehicle.

[0047] Figure 5 An exploded view from one perspective of the invention of an electric balancing vehicle.

[0048] Figure 6 An exploded view from another perspective of the invention of an electric balancing vehicle.

[0049] Numbers in the figure: 1-left vehicle body; 11-left upper cover; 12-left bottom cover; 2-right vehicle body; 21-right upper cover; 22-right bottom cover; 31-main spring bracket; 311-first hole cavity; 312-second annular protrusion; 313-second hole cavity; 314-fourth annular protrusion; 315-first limiting groove; 316-second limiting groove; 32-left spring bracket; 321-first arc-shaped retaining ring; 322-first annular clamping edge; 3221-first limiting protrusion Block; 33-spring bracket; 331-second arc-shaped retaining ring; 332-second annular clamping edge; 3321-second limiting protrusion; 41-left return spring; 42-right return spring; 61-left support bearing; 62-right support bearing; 71-left bearing seat; 72-right bearing seat; 91-left wheel; 92-right wheel; 101-first anti-skid plate; 102-second anti-skid plate; 01-main bracket; 011-extending shaft; 02-horn. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0051] Reference Figure 1-6 ;

[0052] An electric balancing vehicle comprises a left vehicle body 1, a right vehicle body 2 and a main frame 01, wherein the main frame 01 is fixedly connected to the right vehicle body 2, and an extension shaft 011 of the main frame 01 extends into the left vehicle body 1;

[0053] The left vehicle body 1 is provided with a main spring bracket 31, a left spring bracket 32, a right spring bracket 33, a left return spring 41, a right return spring 42, a left support bearing 61 and a right support bearing 62; the left support bearing 61, the left spring bracket 32, the left return spring 41, the main spring bracket 31, the right return spring 42, the right spring bracket 33 and the right support bearing 62 are arranged in sequence from left to right;

[0054] The outer rings of the left support bearing 61 and the right support bearing 62 are fixedly arranged in the left vehicle body 1, and the extended shaft 011 passes through the right support bearing 62, the right spring bracket 33, the right return spring 42, the main spring bracket 31, the left return spring 41, the left spring bracket 32 ​​and the left support bearing 61 from right to left in sequence;

[0055] The two ends of the left return spring 41 are respectively fixed to the left spring bracket 32 ​​and the left side of the main spring bracket 31, and the two ends of the right return spring 42 are respectively fixed to the right side of the main spring bracket 31 and the right spring bracket 33;

[0056] The extension shaft 011 is tightly sleeved in the main spring bracket 31, and the extension shaft 011 movably passes through the left spring bracket 32 ​​and the right spring bracket 33;

[0057] A first arcuate retaining ring 321 is provided on the left outer ring of the left spring bracket 32. The first arcuate retaining ring 321 is located at the lower part of the left bearing seat 71. The front side of the first arcuate retaining ring 321 abuts against the lower front part of the left bearing seat 71. The rear side of the first arcuate retaining ring 321 is located at the lower rear part of the left bearing seat 71 and is arranged at a certain distance. The first arcuate retaining ring 321 and the left bearing seat 71 can drive each other and rotate in a certain direction (clockwise or counterclockwise) and within a certain arc.

[0058] A second arc-shaped retaining ring 331 is provided on the right outer ring of the right spring bracket 33. The second arc-shaped retaining ring 331 is located at the lower part of the right bearing seat 72. The front upper part of the second arc-shaped retaining ring 331 is arranged at a certain distance from the front side of the right bearing seat 72. The rear upper part of the second arc-shaped retaining ring 331 is arranged adjacent to the rear upper part of the right bearing seat 72.

[0059] The second arc-shaped retaining ring 331 and the right bearing seat 72 can drive each other to rotate in a certain direction (clockwise or counterclockwise) and within a certain arc;

[0060] When the right vehicle body 2 rotates relative to the left vehicle body 1, the extension shaft 011 is driven to rotate, and the extension shaft 011 drives the main spring bracket 31 to rotate. The rotation of the main spring bracket 31 drives the left return spring 41 and the right return spring 42 to twist, and the left return spring 41 and the right return spring 42 generate a restoring force. At the same time, the left return spring 41 drives the left spring bracket 32 ​​to rotate, and the right return spring 42 drives the right spring bracket 33 to rotate. The left spring bracket 32 ​​is limited clockwise and has a certain activity space counterclockwise, and the right spring bracket 33 is limited counterclockwise and has a certain activity space clockwise. Under the restoring force of the left return spring 41 and the right return spring 42, the right vehicle body 2 is restored to a relative equilibrium position with the left vehicle body 1.

[0061] When the left vehicle body 1 rotates relative to the right vehicle body 2, the left bearing seat 71 or the right bearing seat 72 drives the left spring bracket 32 ​​and the right spring bracket 33 to rotate. The left spring bracket 32 ​​is limited clockwise and has a certain space for movement counterclockwise, and the right spring bracket 33 is limited counterclockwise and has a certain space for movement clockwise, and at the same time drives the left return spring 41 and the right return spring 42 to twist. The left return spring 41 and the right return spring 42 drive the extension shaft 011 to rotate, and the extension shaft 011 transmits the rotation to the main spring bracket 31 and the right vehicle body 2, so that the right vehicle body 2 generates a force to drive the left vehicle body 1 to return to relative stillness.

[0062] In this embodiment, the left return spring 41 and the right return spring 42 are cylindrical spiral springs;

[0063] A first spring hole is provided on the right side of the left spring bracket 32, a second spring hole and a third spring hole are provided on the left and right sides of the main spring bracket 31, and a fourth spring hole is provided on the left side of the right spring bracket 33;

[0064] Clamps are provided at both ends of the left return spring 41, and the two clamps are respectively inserted into the first spring hole and the second spring hole;

[0065] Clamps are provided at both ends of the right return spring 42, and the two clamps are respectively clamped into the third spring hole and the fourth spring hole.

[0066] In this embodiment, a first annular clamping edge 322 extends from the right side of the left spring bracket 32, and a first hole cavity 311 and a second annular protrusion 312 are provided on the left side of the main spring bracket 31. The first annular clamping edge 322 is inserted into the first hole cavity 311, and the left return spring 41 is sleeved on the outside of the second annular protrusion 312.

[0067] In this embodiment, a second annular clamping edge 332 extends from the right side of the right spring bracket 33, a second hole cavity 313 and a fourth annular protrusion 314 are provided on the right side of the main spring bracket 31, the second annular clamping edge 332 is inserted into the second hole cavity 313, and the right return spring 42 is sleeved on the outside of the fourth annular protrusion 314.

[0068] In this embodiment, a first limiting protrusion 3221 is provided on the first annular clamping edge 322, and a first limiting groove 315 is provided on the cavity of the first cavity 311. The first limiting groove 315 extends circumferentially along the peripheral wall of the first cavity 311 at a central angle of 5 to 30°, and the first limiting protrusion 3221 is located at the rear limit position of the first limiting groove 315;

[0069] A second limiting protrusion 3321 is provided on the second annular clamping edge 332, and a second limiting groove 316 is provided on the cavity of the second cavity 313. The second limiting groove 316 extends circumferentially along the peripheral wall of the second cavity 313 at a central angle of 5 to 30°, and the second limiting protrusion 3321 is located at the front limit position of the second limiting groove 316.

[0070] In this embodiment, the first arc-shaped retaining ring 321 and the first limiting protrusion 3221 are respectively located on two opposite sides of the left spring bracket 32;

[0071] The second arc-shaped retaining ring 331 and the second limiting protrusion 3321 are respectively located on two opposite sides of the right spring bracket 33 .

[0072] In this embodiment, the right vehicle body 2 includes a right upper cover 21 and a right bottom cover 22. The right upper cover 21 is buckled on the upper part of the right bottom cover 22. A receiving cavity for receiving the main body of the main body bracket 01 is formed between the right upper cover 21 and the right bottom cover 22.

[0073] In this embodiment, the left body 1 includes a left upper cover 11 and a left bottom cover 12. The left upper cover 11 is buckled on the upper part of the left bottom cover 12, and a receiving cavity for accommodating the main spring bracket 31, the left spring bracket 32, the right spring bracket 33, the left return spring 41, the right return spring 42, the left support bearing 61 and the right support bearing 62 is formed between the left upper cover 11 and the left bottom cover 12.

[0074] In this embodiment, a left wheel 91 and a right wheel 92 are also included. The left wheel 91 is connected to the left side of the left vehicle body 1 , and the right wheel 92 is connected to the right side of the right vehicle body 2 .

[0075] In this embodiment, a first anti-skid plate 101 is disposed on the upper portion of the left upper cover 11 , and a second anti-skid plate 102 is disposed on the upper portion of the right upper cover 21 .

[0076] In this embodiment, a speaker 02 is disposed inside the left vehicle body 1 .

[0077] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0078] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0079] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electric balancing vehicle, comprising a left vehicle body (1) and a right vehicle body (2), It is characterized in that It also comprises a main body bracket (01), the main body bracket (01) being fixedly connected to the right vehicle body (2), and the extension shaft (011) of the main body bracket (01) extending into the left vehicle body (1); The left vehicle body (1) is provided with a left support bearing (61), a left spring bracket (32), a left return spring (41), a main spring bracket (31), a right return spring (42), a right spring bracket (33) and a right support bearing (62) in sequence from left to right; The outer rings of the left support bearing (61) and the right support bearing (62) are fixedly arranged in the left vehicle body (1); the extension shaft (011) passes through the right support bearing (62), the right spring bracket (33), the right return spring (42), the main spring bracket (31), the left return spring (41), the left spring bracket (32) and the left support bearing (61) in sequence from right to left; The two ends of the left return spring (41) are respectively fixed to the left side of the left spring bracket (32) and the main spring bracket (31), and the two ends of the right return spring (42) are respectively fixed to the right side of the main spring bracket (31) and the right spring bracket (33); The extending shaft (011) is tightly sleeved in the main spring bracket (31), and the extending shaft (011) movably passes through the left spring bracket (32) and the right spring bracket (33); A first arc-shaped retaining ring (321) is provided on the left outer ring of the left spring bracket (32). The first arc-shaped retaining ring (321) is located at the lower part of the left bearing seat (71). The front side of the first arc-shaped retaining ring (321) abuts against the lower front part of the left bearing seat (71). The rear side of the first arc-shaped retaining ring (321) is located at the lower rear part of the left bearing seat (71) and is arranged at a certain distance. The right outer ring of the right spring bracket (33) is provided with a second arc-shaped retaining ring (331), the second arc-shaped retaining ring (331) is located at the lower part of the right bearing seat (72), the front upper part of the second arc-shaped retaining ring (331) is arranged at a certain distance from the front side of the right bearing seat (72), and the rear upper part of the second arc-shaped retaining ring (331) is arranged adjacent to the rear upper part of the right bearing seat (72); When the right vehicle body (2) rotates relative to the left vehicle body (1), the extension shaft (011) is driven to rotate, and the extension shaft (011) drives the main spring bracket (31) to rotate. The rotation of the main spring bracket (31) drives the left return spring (41) and the right return spring (42) to twist. The left return spring (41) and the right return spring (42) generate a restoring force. At the same time, the left return spring (41) drives the left spring bracket (32) to rotate, and the right return spring (42) drives the right spring bracket (33) to rotate. The left spring bracket (32) has a certain movement space when it is limited clockwise and counterclockwise, and the right spring bracket (33) has a certain movement space when it is limited counterclockwise and clockwise. Under the restoring force of the left return spring (41) and the right return spring (42), the right vehicle body (2) returns to a relative equilibrium position with the left vehicle body (1); When the left vehicle body (1) rotates relative to the right vehicle body (2), the left bearing seat (71) or the right bearing seat (72) drives the left spring bracket (32) and the right spring bracket (33) to rotate. The left spring bracket (32) is limited in a clockwise direction and has a certain amount of movement counterclockwise. The right spring bracket (33) is limited in a counterclockwise direction and has a certain amount of movement clockwise. At the same time, the left return spring (41) and the right return spring (42) are driven to twist. The left return spring (41) and the right return spring (42) drive The extension shaft (011) rotates, and the extension shaft (011) transmits the rotation to the main spring bracket (31) and the right vehicle body (2), so that the right vehicle body (2) generates a force that drives the left vehicle body (1) to return to relative stillness.

2. The electric balancing vehicle as claimed in claim 1, It is characterized in that The left return spring (41) and the right return spring (42) are cylindrical torsion springs; A first spring hole is provided on the right side of the left spring bracket (32), a second spring hole and a third spring hole are provided on the left and right sides of the main spring bracket (31), respectively, and a fourth spring hole is provided on the left side of the right spring bracket (33); Clamps are provided at both ends of the left return spring (41), and the two clamps are respectively clamped into the first spring hole and the second spring hole; Clamps are provided at both ends of the right return spring (42), and the two clamps are respectively clamped into the third spring hole and the fourth spring hole.

3. The electric balancing vehicle as claimed in claim 1, It is characterized in that A first annular clamping edge (322) extends from the right side of the left spring bracket (32), and a first cavity (311) and a second annular protrusion (312) are provided on the left side of the main spring bracket (31), the first annular clamping edge (322) is inserted into the first cavity (311), and the left return spring (41) is sleeved on the outside of the second annular protrusion (312).

4. The electric balancing vehicle as claimed in claim 3, It is characterized in that A second annular clamping edge (332) extends from the right side of the right spring bracket (33), a second hole cavity (313) and a fourth annular protrusion (314) are provided on the right side of the main spring bracket (31), the second annular clamping edge (332) is inserted into the second hole cavity (313), and the right return spring (42) is sleeved on the outside of the fourth annular protrusion (314).

5. The electric balancing vehicle as claimed in claim 4, It is characterized in that A first limiting protrusion (3221) is provided on the first annular clamping edge (322), and a first limiting groove (315) is provided on the cavity body of the first cavity (311), the first limiting groove (315) extending circumferentially along the peripheral wall of the first cavity (311) at a central angle of 5 to 30 degrees, and the first limiting protrusion (3221) is located in the first limiting groove (315); A second limiting protrusion (3321) is arranged on the second annular clamping edge (332), and a second limiting groove (316) is arranged on the cavity of the second cavity (313), the second limiting groove (316) extends circumferentially along the peripheral wall of the second cavity (313) at a central angle of 5 to 30 degrees, and the second limiting protrusion (3321) is located in the second limiting groove (316).

6. The electric balancing vehicle as claimed in claim 5, It is characterized in that The first arc-shaped retaining ring (321) and the first limiting protrusion (3221) are respectively located on two opposite sides of the left spring bracket (32); The second arc-shaped retaining ring (331) and the second limiting protrusion (3321) are respectively located on two opposite sides of the right spring bracket (33).

7. The electric balancing vehicle as claimed in claim 6, It is characterized in that The right vehicle body (2) comprises a right upper cover (21) and a right bottom cover (22); the right upper cover (21) is buckled onto the upper portion of the right bottom cover (22); and a housing cavity for housing the main body of the main body bracket (01) is formed between the right upper cover (21) and the right bottom cover (22).

8. The electric balancing vehicle as claimed in claim 7, It is characterized in that The left vehicle body (1) comprises a left upper cover (11) and a left bottom cover (12); the left upper cover (11) is buckled onto the upper portion of the left bottom cover (12); and a receiving chamber for receiving the main spring bracket (31), the left spring bracket (32), the right spring bracket (33), the left return spring (41), the right return spring (42), the left support bearing (61), and the right support bearing (62) is formed between the left upper cover (11) and the left bottom cover (12).

9. The electric balancing vehicle as claimed in claim 7, It is characterized in that It also includes a left wheel (91) and a right wheel (92), wherein the left wheel (91) is connected to the left side of the left vehicle body (1), and the right wheel (92) is connected to the right side of the right vehicle body (2).

10. The electric balancing vehicle as claimed in claim 1, It is characterized in that A horn (02) is arranged inside the left vehicle body (1).

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