阅读说明：本技术 一种电动平衡车 (Electric balance car ) 是由 陈显芝 尚坤 陈显树 于 2021-08-11 设计创作，主要内容包括：本发明公开了一种电动平衡车,当右车体相对左车体转动时,带动伸出轴转动,伸出轴带动左车体上主弹簧支架转动,主弹簧支架转动驱使左复位弹簧和右复位弹簧扭动,同时左复位弹簧和右复位弹簧分别带动左弹簧支架和右弹簧支架转动,左弹簧支架顺时针被左轴承支架限位逆时针有一定的活动空间,右弹簧支架逆时针右轴承支架限位顺时针有一定的活动空间,右车体顺时针或逆时针转动时,左复位弹簧或右复位弹簧之一必然产生回复力,在回复力作用下,右车体恢复至与左车体相对平衡位置；同理,左车体相对右车体转动时,左车体带动左轴承支架和右轴承支架转动,通过相反的力的传播链条,实现左车体和右车体的相对平衡,结构简单、成本低。(The invention discloses an electric balance car, when a right car body rotates relative to a left car body, an extension shaft is driven to rotate, the extension shaft drives a main spring support on the left car body to rotate, the main spring support rotates to drive a left reset spring and a right reset spring to twist, the left reset spring and the right reset spring respectively drive a left spring support and a right spring support to rotate, the left spring support is limited by a left bearing support in a clockwise mode and has a certain moving space in an anticlockwise mode, the right spring support is limited by a right bearing support in the anticlockwise mode and has a certain moving space in the clockwise mode, when the right car body rotates in the clockwise mode or the anticlockwise mode, one of the left reset spring and the right reset spring inevitably generates restoring force, and under the action of the restoring force, the right car body restores to a position relative to the left car body; similarly, when the left vehicle body rotates relative to the right vehicle body, the left vehicle body drives the left bearing support and the right bearing support to rotate, and the relative balance between the left vehicle body and the right vehicle body is realized through the transmission chains with opposite forces, so that the structure is simple and the cost is low.)

1. An electric balance car comprises a left car body (1) and a right car body (2), and is characterized by further comprising a main body support (01), wherein the main body support (01) is fixedly connected with the right car body (2), and an extension shaft (011) of the main body support (01) extends into the left car body (1);

a left support bearing (61), a left spring support (32), a left return spring (41), a main spring support (31), a right return spring (42), a right spring support (33) and a right support bearing (62) are sequentially arranged in the left vehicle body (1) 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), and the extension shaft (011) sequentially penetrates through the right support bearing (62), the right spring support (33), the right return spring (42), the main spring support (31), the left return spring (41), the left spring support (32) and the left support bearing (61) from right to left;

two ends of the left return spring (41) are respectively fixed on the left side of the left spring support (32) and the left side of the main spring support (31), and two ends of the right return spring (42) are respectively fixed on the right side of the main spring support (31) and the right spring support (33);

the extension shaft (011) is tightly sleeved in the main spring support (31), and the extension shaft (011) movably penetrates through the left spring support (32) and the right spring support (33);

a first arc-shaped baffle ring (321) is arranged on the outer ring of the left side of the left spring support (32), the first arc-shaped baffle ring (321) is positioned at the lower part of the left bearing seat (71), and the front side of the first arc-shaped baffle ring (321) abuts against the lower part of the front side of the left bearing seat (71); the rear side of the first arc-shaped baffle ring (321) is positioned at the lower part of the rear side of the left bearing seat (71) and is arranged at a certain distance;

a second arc-shaped baffle ring (331) is arranged on the right outer ring of the right spring support (33), the second arc-shaped baffle ring (331) is positioned at the lower part of the right bearing seat (72), the upper part of the front side of the second arc-shaped baffle ring (331) is arranged at a certain interval with the front side of the right bearing seat (72), and the upper part of the rear side of the second arc-shaped baffle ring (331) abuts against the upper part of the rear side 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, the extension shaft (011) drives the main spring support (31) to rotate, the main spring support (31) rotates to drive 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 restoring force, meanwhile, the left return spring (41) drives the left spring support (32) to rotate, the right return spring (42) drives the right spring support (33) to rotate, the left spring support (32) is clockwise limited and has a certain moving space, the right spring support (33) is anticlockwise limited and has a certain moving space, and under the restoring force action of the left return spring (41) and the right return spring (42), the right vehicle body (2) restores to a relative balance position with the left vehicle body (1);

when left automobile body (1) rotated for right automobile body (2), left side bearing frame (71) or right side bearing frame (72) drove left spring bracket (32) and right spring bracket (33) and rotate, left spring bracket (32) clockwise spacing anticlockwise have certain activity space, right spring bracket (33) anticlockwise spacing clockwise has certain activity space, drive left reset spring (41) and right reset spring (42) wrench movement simultaneously, left reset spring (41) and right reset spring (42) drive projecting shaft (011) and rotate, projecting shaft (011) transmission rotates to main spring bracket (31) and right automobile body (2), thereby right automobile body (2) produce the effort that drives left automobile body (1) and resume to relative stillness.

2. The electrodynamic balance car of claim 1, wherein the left return spring (41) and the right return spring (42) are cylindrical springs;

a first spring hole is formed in the right side of the left spring support (32), a second spring hole and a third spring hole are formed in the left side and the right side of the main spring support (31) respectively, and a fourth spring hole is formed in the left side of the right spring support (33);

two ends of the left return spring (41) are provided with clamping heads which are respectively clamped into the first spring hole and the second spring hole;

two ends of the right reset spring (42) are provided with clamping heads, and the two clamping heads are clamped into the third spring hole and the fourth spring hole respectively.

3. The electrodynamic balance car of claim 1, characterized in that, the right side of the left spring support (32) stretches out first annular card edge (322), the left side of the main spring support (31) is provided with a first hole (311) and a second annular bulge (312), the first annular card edge (322) is snapped into the first hole (311), and the left return spring (41) is sleeved outside the second annular bulge (312).

4. The electrodynamic balance car of claim 3, characterized in that, the right side of right spring support (33) stretches out second annular card edge (332), the right side of main spring support (31) is provided with second vestibule (313) and fourth annular protruding (314), the second annular card edge (332) is snapped into the second vestibule (313), the right return spring (42) is sleeved outside the fourth annular protruding (314).

5. The electrodynamic balance car of claim 4, characterized in that, there is a first limit lug (3221) on the first annular card edge (322), there is a first limit groove (315) on the cavity of the first bore (311), the first limit groove (315) extends along the circumferential wall of the first bore (311) by a central angle of 5-30 ° circumferentially, the first limit lug (3221) is located at the rear limit position of the first limit groove (315);

the second annular clamping edge (332) is provided with a second limiting bump (3321), a cavity of the second hole cavity (313) is provided with a second limiting groove (316), the second limiting groove (316) extends for 5-30 degrees of central angle along the circumferential wall of the second hole cavity (313), and the second limiting bump (3321) is located at the front limiting position of the second limiting groove (316).

6. The electric balance vehicle as claimed in claim 5, wherein the first arc-shaped stop ring (321) and the first limit projection (3221) are respectively located at two opposite sides of the left spring support (32);

the second arc-shaped retaining ring (331) and the second limiting convex block (3321) are respectively positioned at two opposite sides of the right spring support (33).

7. The electric balance car of claim 6, wherein the right car body (2) comprises a right upper cover (21) and a right bottom cover (22), the right upper cover (21) is buckled on the upper portion of the right bottom cover (22), and 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).

8. The electric balance vehicle as claimed in claim 7, wherein the left vehicle body (1) comprises a left upper cover (11) and a left bottom cover (12), the left upper cover (11) is fastened to the upper portion of the left bottom cover (12), and a receiving cavity for receiving the main spring support (31), the left spring support (32), the right spring support (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. An electrodynamic balance car comprising a left car body (1) and a right car body (2), characterized by further comprising the other structure of claim 1, the arrangement of the other structure being interchanged with the arrangement of claim 1 in bilateral symmetry.

10. Electrodynamic balance car according to claim 1, characterized in that the interior of the left car body (1) is provided with a horn (02).

Technical Field

The invention relates to the technical field of balance cars, in particular to an electric balance car.

Background

The balance car is a flexible and small short-distance travel tool, and many young people regard driving the balance car as a fashion sport, so that various manufacturers continuously develop the balance car deeply and continuously explore and innovate the balance car in the fields of functions, appearances and production control.

The electric balance car mainly detects the posture change of the car body through the detection control device, and drives the motor to rotate on the basis of the dynamic stability principle to realize the balance of the moving car body. The current balance car detection control device mainly includes: gyroscope, subplate singlechip, master control singlechip and motor drive control circuit. Under the condition that power supply is normal, the gyroscope outputs attitude signals to the auxiliary board single chip microcomputer according to the attitude of the vehicle body, the auxiliary board single chip microcomputer reads the attitude signals and compares and calculates comparison results representing the attitude deviation of the vehicle body and transmits the comparison results to the main control board single chip microcomputer, the main control board single chip microcomputer reads the comparison results and carries out operation processing to obtain PWM wave control signals for balancing the attitude of the vehicle body and outputs the PWM wave control signals to the motor driving circuit, and the motor driving circuit outputs driving signals to drive the motor to work so as to control the balance of the vehicle body of the balance vehicle.

Although the existing balance car detection and control device can achieve the effect of controlling the balance of the car body of the balance car, the data is read and calculated twice through the auxiliary board single chip microcomputer and the main control board single chip microcomputer to generate time delay, and the light-load run-out is shown in the balance car industry. In addition, the processing technology of the detection control device is complex by using the auxiliary plate single chip microcomputer, and the processing cost is high.

In conclusion, the existing balance car detection and control device has the technical problems of light-load jumping, complex process and high cost.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides an electric balance car which realizes balance adjustment through a mechanical structure.

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

an electric balance car comprises a left car body, a right car body and a main body support, wherein the main body support is fixedly connected with the right car body, and an extension shaft of the main body support extends into the left car body;

a main spring support, a left spring support, a right spring support, a left return spring, a right return spring, a left support bearing and a right support bearing are arranged in the left vehicle body; the left support bearing, the left spring support, the left return spring, the main spring support, the right return spring, the right spring support and the right support bearing are sequentially arranged from left to right;

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 sequentially penetrates through the right support bearing, the right spring support, the right return spring, the main spring support, the left return spring, the left spring support and the left support bearing from right to left;

two ends of the left reset spring are respectively fixed on the right side of the left spring support (or other parts of the left spring support) and the left side of the main spring support, and two ends of the right reset spring are respectively fixed on the right side of the main spring support and the right spring support (or the left side of the right spring support);

the extension shaft is tightly sleeved in the main spring support and movably penetrates through the left spring support and the right spring support;

a first arc-shaped baffle ring is arranged on the left outer ring of the left spring support, the first arc-shaped baffle ring is positioned at the lower part of the left bearing seat, and the front side of the first arc-shaped baffle ring abuts against the lower part of the front side of the left bearing seat; the rear side of the first arc-shaped baffle ring is positioned at the lower part of the rear side of the left bearing seat and is arranged at a certain distance;

a second arc-shaped baffle ring is arranged on the right outer ring of the right spring support, the second arc-shaped baffle ring is positioned on the lower part of the right bearing seat, the upper part of the front side of the second arc-shaped baffle ring is arranged at a certain interval with the front side of the right bearing seat, and the upper part of the rear side of the second arc-shaped baffle ring is arranged in a manner of abutting against the upper part of the rear side of the right bearing seat;

when the right vehicle body rotates relative to the left vehicle body, the extension shaft is driven to rotate, the extension shaft drives the main spring support to rotate, the main spring support rotates to drive the left reset spring and the right reset spring to twist, the left reset spring and the right reset spring generate restoring force, meanwhile, the left reset spring drives the left spring support to rotate, the right reset spring drives the right spring support to rotate, the left spring support is clockwise limited and has a certain moving space, the right spring support is anticlockwise limited and has a certain moving space, and under the restoring force action of the left reset spring and the right reset spring, the right vehicle body is restored to a position which is opposite to the left vehicle body and balanced;

when left automobile body right automobile body relatively rotated, left side bearing frame or right side bearing frame drive left spring bracket and right spring bracket and rotate, the clockwise spacing anticlockwise of left spring bracket has certain activity space, the anticlockwise spacing clockwise of right spring bracket has certain activity space, drive left reset spring and right reset spring wrench movement simultaneously, left reset spring and right reset spring drive the projecting shaft and rotate, the projecting shaft transmission rotates to main spring bracket and right automobile body, thereby right automobile body produces the effort that drives left automobile body and resume to relative stillness.

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

a first spring hole is formed in the right side of the left spring support, a second spring hole and a third spring hole are formed in the left side and the right side of the main spring support respectively, and a fourth spring hole is formed in the left side of the right spring support;

two ends of the left reset spring are provided with clamping heads which are respectively clamped into the first spring hole and the second spring hole;

two ends of the right reset spring are provided with clamping heads which are respectively clamped into the third spring hole and the fourth spring hole.

Preferably, the right side of the left spring support extends out of the first annular clamping edge, the left side of the main spring support is provided with a first hole cavity and a second annular bulge, the first annular clamping edge is clamped in the first hole cavity, and the left return spring is sleeved on the outer side of the second annular bulge.

Preferably, the right side of the right spring support extends out of the second annular clamping edge, the right side of the main spring support is provided with a second hole cavity and a fourth annular bulge, the second annular clamping edge is clamped in the second hole cavity, and the right return spring is sleeved on the outer side of the fourth annular bulge.

Preferably, the first annular clamp edge is provided with a first limiting bump, the cavity of the first hole cavity is provided with a first limiting groove, the first limiting groove extends for 5-30 degrees of central angle along the circumferential wall of the first hole cavity, and the first limiting bump is positioned at the rear limit position of the first limiting groove; (left spring support rotated relative to main spring support.)

The second annular card is provided with a second limiting lug on the edge, a second limiting groove is arranged on the cavity of the second hole cavity, the second limiting groove extends for 5-30 degrees of central angle along the circumferential wall of the second hole cavity, and the second limiting lug is located at the front limit position of the second limiting groove.

Preferably, the first arc-shaped baffle ring and the first limit bump are respectively positioned at two opposite sides of the left spring support;

the second arc-shaped baffle ring and the second limiting convex block are respectively positioned at two opposite sides of the right spring support.

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 an accommodating cavity for accommodating the main body of the main body bracket is formed between the right upper cover and the right bottom cover;

preferably, the left vehicle body comprises a left upper cover and a left bottom cover, the left upper cover is buckled on the upper portion of the left bottom cover, and an accommodating cavity for accommodating the main spring support, the left spring support, the right spring support, 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.

Preferably, the vehicle further comprises 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.

Preferably, the upper portion of the left upper cover is provided with a first antiskid plate, and the upper portion of the right upper cover is provided with a second antiskid plate.

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

The invention relates to an electric balance car, which comprises a left car body, a right car body and a main body bracket, wherein the main body bracket is fixedly connected with the right car body;

a main spring support, a left spring support, a right spring support, a left return spring, a right return spring, a left support bearing and a right support bearing are arranged in the left vehicle body; the left support bearing, the left spring support, the left return spring, the main spring support, the right return spring, the right spring support and the right support bearing are sequentially arranged from left to right;

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 sequentially penetrates through the right support bearing, the right spring support, the right return spring, the main spring support, the left return spring, the left spring support and the left support bearing from right to left;

two ends of the left reset spring are respectively fixed on the left side of the left spring support and the left side of the main spring support, and two ends of the right reset spring are respectively fixed on the right side of the main spring support and the right spring support;

the extension shaft is tightly sleeved in the main spring support and movably penetrates through the left spring support and the right spring support;

a first arc-shaped baffle ring is arranged on the left outer ring of the left spring support, the first arc-shaped baffle ring is positioned at the lower part of the left bearing seat, and the front side of the first arc-shaped baffle ring abuts against the lower part of the front side of the left bearing seat; the rear side of the first arc-shaped baffle ring is positioned at the lower part of the rear side of the left bearing seat and is arranged at a certain distance;

a second arc-shaped baffle ring is arranged on the right outer ring of the right spring support, the second arc-shaped baffle ring is positioned on the lower part of the right bearing seat, the upper part of the front side of the second arc-shaped baffle ring is arranged at a certain interval with the front side of the right bearing seat, and the upper part of the rear side of the second arc-shaped baffle ring is arranged in a manner of abutting against the upper part of the rear side of the right bearing seat;

when a left vehicle body rotates relative to a right vehicle body, the left side bearing seat or the right side bearing seat drives the left spring support and the right spring support to rotate, the clockwise limit of the left spring support is anticlockwise provided with a certain movable space, the anticlockwise limit of the right spring support is anticlockwise provided with a certain movable space, the left reset spring and the right reset spring are simultaneously driven to twist, and the left reset spring and the right reset spring drive the left reset spring and the right reset spring to rotate

The extension shaft rotates, and the extension shaft transmits rotation to the main spring support and the right vehicle body, so that the right vehicle body generates acting force for driving the left vehicle body to return to relative rest.

An electrodynamic balance car, includes left automobile body and right automobile body, still includes foretell other structures, and the setting of other structures is left-right symmetry with foretell other structures and is exchanged.

The invention has the beneficial effects that: when a right car body rotates relative to a left car body, an extension shaft is driven to rotate, the extension shaft drives a main spring support on the left car body to rotate, the main spring support rotates to drive a left reset spring and a right reset spring to twist, the left reset spring and the right reset spring respectively drive a left spring support and a right spring support to rotate, the left spring support is clockwise limited by a left bearing support and has a certain moving space anticlockwise, the right spring support has a certain moving space anticlockwise limited by a right bearing support and has a certain moving space clockwise, when the right car body rotates clockwise or anticlockwise, one of the left reset spring or the right reset spring inevitably generates restoring force, and under the action of the restoring force, the right car body restores to a position which is relatively balanced with the left car body; in a similar way, when left automobile body right side automobile body rotates relatively, left automobile body drives left bearing bracket and right bearing bracket and rotates, left bearing bracket and right bearing bracket keep off the ring through first arc respectively and keep off the ring and drive left spring bracket and right spring bracket rotation with the second arc, left spring bracket and right spring bracket rotation drive left reset spring respectively and right reset spring rotate, transmit the turning force for main spring bracket simultaneously, main spring bracket and main support relatively fixed, thereby produce reverse restoring force, the relative right automobile body of left automobile body of drive replies to balanced position, this scheme passes through mechanical structure and realizes the relative self-balancing of left automobile body and right automobile body, moreover, the steam generator is simple in structure, and low in cost.

Drawings

Fig. 1 is an exploded view of a self-balancing structure of an electric balance car.

Fig. 2 is a schematic diagram of a self-balancing structure of an electric balance car (including a right wheel).

Fig. 3 is a schematic structural diagram of a main spring support of an electric balance car.

Fig. 4 is a schematic structural diagram of an electric balance car of the invention.

Fig. 5 is an exploded view from one perspective of an electrodynamic balance car of the invention.

Fig. 6 is an exploded view from another perspective of an inventive electric balance car.

Reference numbers in the figures: 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 support; 311-a first bore; 312 — a second annular boss; 313-a second bore; 314-a fourth annular projection; 315-a first restraint slot; 316-second limiting groove; 32-left spring support; 321-a first arcuate stop ring; 322-a first annular ledge; 3221-a first limit bump; 33-a spring support; 331-a second arcuate baffle ring; 332-a second annular ledge; 3321-second limiting bump; 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 side wheel; 92-right side wheel; 101-a first cleat; 102-a second cleat; 01-main body support; 011-extension shaft; 02-horn.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to FIGS. 1-6;

an electric balance car comprises a left car body 1, a right car body 2 and a main body bracket 01, wherein the main body bracket 01 is fixedly connected with the right car body 2, and an extension shaft 011 of the main body bracket 01 extends into the left car body 1;

a main spring support 31, a left spring support 32, a right spring support 33, a left return spring 41, a right return spring 42, a left support bearing 61 and a right support bearing 62 are arranged in the left vehicle body 1; the left support bearing 61, the left spring support 32, the left return spring 41, the main spring support 31, the right return spring 42, the right spring support 33 and the right support bearing 62 are sequentially arranged 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, and the extension shaft 011 sequentially penetrates through the right support bearing 62, the right spring support 33, the right return spring 42, the main spring support 31, the left return spring 41, the left spring support 32 and the left support bearing 61 from right to left;

two ends of a left return spring 41 are respectively fixed on the left sides of the left spring support 32 and the main spring support 31, and two ends of a right return spring 42 are respectively fixed on the right side of the main spring support 31 and the right spring support 33;

the extension shaft 011 is fixedly sleeved in the main spring support 31, and the extension shaft 011 movably penetrates through the left spring support 32 and the right spring support 33;

a first arc-shaped baffle ring 321 is arranged on the left outer ring of the left spring bracket 32, the first arc-shaped baffle ring 321 is positioned at the lower part of the left bearing seat 71, and the front side of the first arc-shaped baffle ring 321 abuts against the lower part of the front side of the left bearing seat 71; the rear side of the first arc-shaped baffle ring 321 is positioned at the lower rear side of the left bearing seat 71 and is arranged at a certain distance; the first arc-shaped baffle ring 321 and the left bearing seat 71 can be mutually driven to rotate in a certain direction (clockwise or anticlockwise) and a certain arc;

a second arc-shaped baffle ring 331 is arranged on the right outer ring of the right spring support 33, the second arc-shaped baffle ring 331 is positioned at the lower part of the right bearing seat 72, the upper part of the front side of the second arc-shaped baffle ring 331 is arranged at a certain distance from the front side of the right bearing seat 72, and the upper part of the rear side of the second arc-shaped baffle ring 331 is arranged adjacent to the upper part of the rear side of the right bearing seat 72;

the second arc-shaped baffle ring 331 and the right bearing seat 72 can be mutually driven to rotate in a certain direction (clockwise or anticlockwise) and a certain arc;

when the right vehicle body 2 rotates relative to the left vehicle body 1, the extension shaft 011 is driven to rotate, the extension shaft 011 drives the main spring support 31 to rotate, the main spring support 31 rotates to drive 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 restoring force, meanwhile, the left return spring 41 drives the left spring support 32 to rotate, the right return spring 42 drives the right spring support 33 to rotate, the clockwise limit of the left spring support 32 has a certain moving space, the counterclockwise limit of the right spring support 33 has a certain moving space, and under the restoring force action of the left return spring 41 and the right return spring 42, the right vehicle body 2 restores to a relative balance 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 support 32 and the right spring support 33 to rotate, the left spring support 32 has a certain moving space clockwise in a clockwise limiting mode, the right spring support 33 has a certain moving space clockwise in a counterclockwise limiting mode, 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 to rotate, the extension shaft 011 is transmitted and rotated to the main spring support 31 and the right vehicle body 2, and therefore the right vehicle body 2 generates an acting force for driving the left vehicle body 1 to recover to relative rest.

In this embodiment, the left return spring 41 and the right return spring 42 are cylindrical coil springs;

a first spring hole is formed in the right side of the left spring support 32, a second spring hole and a third spring hole are formed in the left side and the right side of the main spring support 31 respectively, and a fourth spring hole is formed in the left side of the right spring support 33;

two ends of the left return spring 41 are provided with clamping heads which are respectively clamped into the first spring hole and the second spring hole;

two ends of the right return spring 42 are provided with clamping heads which are respectively clamped into the third spring hole and the fourth spring hole.

In this embodiment, the right side of the left spring support 32 extends out of the first annular ledge 322, the left side of the main spring support 31 is provided with the first hole 311 and the second annular protrusion 312, the first annular ledge 322 is clamped into the first hole 311, and the left return spring 41 is sleeved outside the second annular protrusion 312.

In this embodiment, the right side of the right spring support 33 extends out of the second annular ledge 332, the right side of the main spring support 31 is provided with the second bore 313 and the fourth annular protrusion 314, the second annular ledge 332 is clamped into the second bore 313, and the right return spring 42 is sleeved outside the fourth annular protrusion 314.

In this embodiment, the first annular retaining edge 322 is provided with a first limiting protrusion 3221, the cavity of the first bore 311 is provided with a first limiting groove 315, the first limiting groove 315 extends circumferentially along the circumferential wall of the first bore 311 by a central angle of 5 to 30 °, and the first limiting protrusion 3221 is located at a rear limit position of the first limiting groove 315;

the second annular clamping edge 332 is provided with a second limiting bump 3321, a cavity of the second hole cavity 313 is provided with a second limiting groove 316, the second limiting groove 316 extends along the circumferential wall of the second hole cavity 313 in the circumferential direction by a central angle of 5-30 degrees, and the second limiting bump 3321 is located at the front limit position of the second limiting groove 316.

In this embodiment, the first arc-shaped retaining ring 321 and the first limiting protrusion 3221 are respectively located at two opposite sides of the left spring support 32;

the second arc-shaped stop ring 331 and the second limit protrusion 3321 are respectively located at two opposite sides of the right spring support 33.

In this embodiment, the right body 2 includes a right upper cover 21 and a right bottom cover 22, the right upper cover 21 is fastened to the upper portion of the right bottom cover 22, and 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;

in this embodiment, the left vehicle body 1 includes a left upper cover 11 and a left bottom cover 12, the left upper cover 11 is fastened to the upper portion of the left bottom cover 12, and an accommodating cavity for accommodating the main spring support 31, the left spring support 32, the right spring support 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.

In the present embodiment, a left wheel 91 and a right wheel 92 are further 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.

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.

In the present embodiment, a horn 02 is provided inside the left vehicle body 1.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.