Three-wheel electric balance car

Abstract

A three-wheel electric balance car comprises a lower car frame (110), two electric wheels (200), a supporting wheel (300) and two treading assemblies (400), each electric wheel (200) is provided with a wheel axle (210), and each treading assembly (400) correspondingly and fixedly clamps one wheel axle (210); the supporting wheels (300) are arranged at the bottom of the front part of the lower frame (110); the axle (210) is rotatably arranged on the lower frame (110). According to the three-wheel electric vehicle, the stability of the electric balance vehicle can be effectively improved, the balance performance of the electric balance vehicle in the moving process is good, and the balance state can be kept under the condition that the electric quantity is insufficient; therefore, the device is suitable for beginners and children to use.

Description

A three-wheeled electric balancing vehicle Technical Field

[0001] The present invention relates to the field of electric balancing vehicles, and in particular to a three-wheeled electric balancing vehicle. Background Art

[0002] Electric balancing scooters are a popular product nowadays, as they are used by the public as a means of transportation or leisure and entertainment due to their novel design and convenient travel. The balancing system of electric balancing scooters can detect changes in the posture of the frame and use the control system to accurately drive the motor to make corresponding adjustments to maintain the balance of the system and control the forward, backward, turning and other movements of the scooter. Technical issues

[0003] The electric balancing scooter of the prior art can control the balance of the vehicle when the battery is sufficient, but when the battery is insufficient, the balancing system will fail, causing the balancing scooter to lose balance and tip over, thereby causing a safety problem.

[0004] In addition, the electric balance scooters on the market today are mainly divided into two categories: unicycle and two-wheel. However, both unicycle and two-wheel balance scooters have certain requirements on the user's balance, control and coordination abilities, and there is a certain degree of difficulty for beginners to get started. Therefore, this makes some beginners or children unwilling to try to use them, which reduces the applicability of electric balance scooters. Technical Solutions

[0005] An embodiment of the present invention provides a three-wheeled electric balancing vehicle, which can effectively improve the stability of the electric balancing vehicle, so that the electric balancing vehicle has good balance performance during movement and can maintain a balanced state even when the battery is low; it is easy to use and is suitable for beginners and children. Beneficial effects

[0006] A three-wheeled electric balancing vehicle comprising:

[0007] Lower the frame;

[0008] It also includes two electric wheels, a support wheel and two pedal assemblies, each electric wheel is provided with a wheel axle, and each pedal assembly is fixedly clamped to a wheel axle;

[0009] The support wheel is arranged at the bottom of the front portion of the lower frame;

[0010] The wheel axle is rotatably arranged on the lower frame.

[0011] Preferably, each pedal assembly is clearance-matched with the lower frame, and the pedal assembly and the lower frame can deflect relative to each other.

[0012] Preferably, the wheel axle is arranged as a long axis, and the pedal assembly is fixed to the wheel axle through a fixing piece.

[0013] Preferably, a flat groove is provided on the wheel axle, and the fixing piece has a flat portion corresponding to the flat groove, and the flat groove and the flat portion are abutted and clamped.

[0014] Preferably, each electric wheel includes a hub motor, and the motor shaft of the hub motor constitutes the wheel axle.

[0015] Preferably, the supporting wheel is a universal wheel.

[0016] Preferably, the lower frame is provided with a mounting seat, and the wheel axle is mounted on the mounting seat via a clamping member.

[0017] Preferably, the lower frame is provided with a triangular plate, which includes a mounting portion and a supporting portion, and the mounting portion and the supporting portion are connected via a connecting portion, the wheel axle is provided on the mounting portion via a mounting seat, and the support wheel is installed on the bottom of the supporting portion.

[0018] Preferably, the mounting seat is provided with a boss, and the boss is provided with a groove for abutting and mounting with the wheel axle.

[0019] Preferably, a first spring is provided between each pedal assembly and the mounting seat, one end of the first spring abuts against the pedal assembly, and the other end abuts against the mounting seat, and the first spring is used for supporting and resetting the pedal assembly.

[0020] Preferably, a main controller is provided in the lower frame, the main controller is provided between the two electric wheels, the main controller is connected to the two electric wheels, and the main controller can control the movement of the electric wheels.

[0021] Preferably, a gyroscope is further provided in the pedal assembly, and the gyroscope is used to sense and detect the deflection change of the pedal assembly.

[0022] Preferably, a photoelectric switch is provided in the pedal assembly, and the photoelectric switch includes a slot switch and a photoelectric baffle. The slot switch cooperates with the photoelectric baffle to identify when a user gets on or off the vehicle.

[0023] Preferably, it also includes a power battery, which can be detachably arranged on the lower frame.

[0024] Preferably, the vehicle further comprises an upper frame mounted in cooperation with the lower frame, and the upper frame is provided with a mounting through hole for accommodating the pedal assembly.

[0025] It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

[0026] A three-wheeled electric balancing vehicle comprises: two electric wheels and a support wheel, the two electric wheels being rotatably arranged on a lower frame, and the support wheel being arranged at the bottom of the front portion of the lower frame, so that the two electric wheels and the support wheel form a three-wheel support structure, which can effectively improve the stability of the electric balancing vehicle, so that the electric balancing vehicle has good balance performance and reduces the difficulty of pedaling control; because the support wheel is provided, it can ensure that the electric balancing vehicle can maintain a balanced state even when the battery is low, reducing the risk of tipping over by beginners or children, and improving the safety performance of the electric balancing vehicle.

[0027] Each pedal assembly is loosely fitted with the lower frame, allowing the pedal assembly and the lower frame to deflect relative to each other, causing the lower frame to deflect and tilt upward relative to the two electric wheels. Therefore, it can remain stable even when running at low speeds or on uneven roads, thereby improving the safety of the electric balance vehicle.

[0028] The wheel axle is set as a long axis, which ensures that the wheel axle has sufficient length to abut and fix with the pedal assembly, which can enhance the overall supporting strength after the pedal assembly and the wheel axle are fixed, thereby improving the load-bearing capacity of the pedal assembly and making the pedal assembly support stable and reliable.

[0029] The fixing member fixes the pedal assembly to the wheel axle by abutting the flat portion against the flat groove, so that the pedal assembly and the wheel axle are relatively fixed and can rotate synchronously with the wheel axle.

[0030] The hub motor can provide efficient power for the electric balance vehicle, reduce energy loss during the transmission process, thereby improving transmission efficiency, and simplify the mechanical structure, which can reduce the overall weight of the electric balance vehicle.

[0031] By setting the support wheels as universal wheels, multi-directional movement can be achieved, providing high maneuverability and flexibility, making the electric balance car move stably and smoothly.

[0032] The wheel axle is mounted on the mounting seat through a pressing piece, and this arrangement enables the mounting seat to play a role of rotational support for the wheel axle.

[0033] The triangular plate provides an installation base for the two electric wheels and the support wheel, so that the two electric wheels and the support wheel are installed stably; the mounting seat is arranged on the mounting part of the triangular plate, thereby improving the supporting strength of the mounting seat and facilitating the mounting seat to provide rotational support for the wheel axle.

[0034] By arranging the groove on the boss, the wheel axle is brought into contact with the groove, thereby improving the load-bearing capacity of the mounting seat.

[0035] When the pedal assembly deflects, the first spring arranged between the pedal assembly and the mounting seat has a supporting and restoring effect on the pedal assembly, so that the deflection of the pedal assembly is stable and reliable, and the deflection and reset of the pedal assembly can be facilitated.

[0036] The main controller is arranged between the two electric wheels and is connected to the two electric wheels, thereby facilitating the control of the movement of the electric wheels, so that the movement of the electric wheels is smooth and reliable.

[0037] The gyroscope installed on the pedal assembly can sense and detect the tilt angle and angular velocity of the pedal assembly, thereby detecting the changes in the tilt deflection of the pedal assembly, obtaining the instructions issued by the user by changing the center of gravity of the body to step on the pedal assembly, and then controlling the movement of the electric balance vehicle.

[0038] The photoelectric switch is arranged in the pedal assembly, which can sense the user stepping on the pedal assembly, thereby facilitating the detection of the user getting on and off the vehicle.

[0039] The power battery can be detachably arranged on the lower frame, thereby making it easy to take out the power battery for charging and to repair or replace the battery.

[0040] By providing an upper frame which is mounted in conjunction with the lower frame, and providing an installation through hole for accommodating the pedal assembly on the upper frame, it is convenient to install the pedal assembly on the lower frame and to facilitate users to stand on the pedal assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0042] FIG1 is a schematic structural diagram of an embodiment of the present invention.

[0043] FIG2 is a top view of an embodiment of the present invention.

[0044] FIG3 is a schematic structural diagram of an embodiment of the present invention having an upper frame.

[0045] FIG4 is a schematic structural diagram of a pedal assembly according to an embodiment of the present invention.

[0046] FIG5 is a schematic structural diagram of the cooperation between the pedal assembly and the electric wheel according to an embodiment of the present invention.

[0047] FIG6 is a schematic structural diagram of the cooperation between the set plate and the electric wheel according to an embodiment of the present invention.

[0048] FIG. 7 is a schematic structural diagram of the cooperation between the swing support plate and the mounting seat according to an embodiment of the present invention.

[0049] FIG8 is a structural diagram of the installation positions of the main controller and the gyroscope according to an embodiment of the present invention.

[0050] FIG9 is a schematic structural diagram of a photoelectric switch according to an embodiment of the present invention.

[0051] FIG10 is a schematic structural diagram of a support base according to an embodiment of the present invention.

[0052] FIG11 is a schematic structural diagram of a power supply battery separately arranged on a lower frame according to an embodiment of the present invention.

[0053] FIG12 is a schematic structural diagram of the wheel axle installed on the lower frame according to the second embodiment of the present invention.

[0054] FIG13 is a schematic diagram of a control device module according to an embodiment of the present invention.

[0055] FIG14 is a main control circuit according to an embodiment of the present invention.

[0056] FIG15 is a schematic diagram of a power supply circuit according to an embodiment of the present invention.

[0057] In the figure: 100-upper frame; 101-mounting through hole; 110-lower frame; 111-triangular plate; 1111-mounting portion; 1112-support portion; 1113-connecting portion; 112-mounting seat; 1121-boss; 1122-groove; 1123-accommodating groove; 113-battery compartment; 114-power battery; 200-electric wheel; 210-wheel axle; 211-flat groove; 220-pressing member; 2 30-first spring; 300-support wheel; 310-return spring; 400-pedal assembly; 410-swing support plate; 411-fixing part; 4111-flat part; 420-pedal; 430-support seat; 4301-placement slot; 4302-clearance hole; 440-gyroscope; 500-main controller; 600-photoelectric switch; 610-slot switch; 620-photoelectric baffle; 630-mounting column. Best Mode for Carrying Out the Invention

[0058] A three-wheeled electric balancing vehicle comprising:

[0059] Lower the frame;

[0060] It also includes two electric wheels, a support wheel and two pedal assemblies, each electric wheel is provided with a wheel axle, and each pedal assembly is fixedly clamped to a wheel axle;

[0061] The support wheel is arranged at the bottom of the front portion of the lower frame;

[0062] The wheel axle is rotatably arranged on the lower frame. Modes for Carrying Out the Invention

[0063] To facilitate understanding of the present invention, the present invention is described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element, or one or more elements can be interposed therebetween. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more elements can be interposed therebetween. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only. In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly specifying the number of technical features indicated. Therefore, unless otherwise specified, features specified as "first" or "second" may explicitly or implicitly include one or more of such features; "plurality" means two or more. The term "comprising" and any variations thereof are intended to be non-exclusive, and one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0064] In addition, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. All technical and scientific terms used in this specification have the same meaning as those generally understood by technicians in the technical field of the present invention. The terms used in the description of the present invention are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0065] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with Figures 1 to 15 of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0066] Please refer to Figures 1 to 15 , in which a three-wheeled electric balancing vehicle is described in detail through specific embodiments of the present invention.

[0067] Example 1

[0068] Please refer to Figures 1 to 11. A three-wheeled electric balancing vehicle includes a lower frame 110, two electric wheels 200, a support wheel 300 and two pedaling assemblies 400. Each electric wheel 200 is provided with a wheel axle 210, and each pedaling assembly 400 is correspondingly fixedly clamped to a wheel axle 210; the support wheel 300 is provided at the bottom of the front part of the lower frame 110; and the wheel axle 210 is rotatably provided on the lower frame 110.

[0069] This embodiment has at least the following beneficial effects:

[0070] The three-wheeled electric balance vehicle includes two electric wheels 200 and a support wheel 300. The two electric wheels 200 are rotatably arranged on the lower frame 110, and the support wheel 300 is arranged at the bottom of the front part of the lower frame 110. Therefore, the two electric wheels 200 and the support wheel 300 form a three-wheel support structure, which can effectively improve the stability of the electric balance vehicle, so that the electric balance vehicle has good balance performance and reduces the difficulty of pedaling control; because the support wheel 300 is provided, it can ensure that the electric balance vehicle can maintain a balanced state even when the battery is low, reduce the risk of tipping over by beginners or children, and improve the safety performance of the electric balance vehicle.

[0071] In this embodiment, each pedal assembly 400 is loosely fitted with the lower frame 110 , and the pedal assembly 400 and the lower frame 110 can deflect relative to each other, as shown in FIG. 2 .

[0072] Each pedal assembly 400 is loosely fitted with the lower frame 110, so that the pedal assembly 400 and the lower frame 110 can deflect relative to each other, causing the lower frame 110 to deflect and tilt upward relative to the two electric wheels 200, and the tilt angle can be 2~30°, and the support wheel 300 arranged at the bottom of the front part of the lower frame 110 can deflect upward with the lower frame 110, so that it can maintain stability even when running at low speed or on uneven roads, thereby improving the safety of the electric balance vehicle.

[0073] In this embodiment, an upper frame 100 is further included and is mounted in conjunction with the lower frame 110 . The upper frame 100 is provided with a mounting through hole 101 for accommodating the pedal assembly 400 , as shown in FIG. 3 .

[0074] By providing an upper frame 100 that is mounted in conjunction with the lower frame 110 and providing an installation through hole 101 on the upper frame 100 that can accommodate the pedal assembly 400, it is convenient to install the pedal assembly 400 on the lower frame 110 and facilitate the user to stand on the pedal assembly 400.

[0075] In this embodiment, each electric wheel 200 includes a hub motor (not shown), which is disposed inside the electric wheel 200 . The motor shaft of the hub motor constitutes the wheel axle 210 , and the supporting wheel 300 is a universal wheel.

[0076] The hub motor can efficiently convert electrical energy into mechanical energy to provide power for the electric balance vehicle. It is based on the law of electromagnetic effect, which enables the electric balance vehicle to directly drive the electric wheel 200 to rotate without the need for traditional mechanical transmission devices, reducing energy loss during the transmission process and improving transmission efficiency; the hub motor can enable the balance vehicle to reach a higher speed in a short time and have good acceleration performance; in addition, it can also greatly simplify the mechanical part of the electric balance vehicle. This integrated setting not only reduces the weight of the entire vehicle, but also improves the space utilization and overall aesthetics of the electric balance vehicle; by setting the support wheel 300 as a universal wheel, multi-directional movement can be achieved, providing high maneuverability and flexibility, making the electric balance vehicle move stably and smoothly.

[0077] In this embodiment, the wheel axle 210 is configured as a long axis, and the pedal assembly 400 is fixed to the wheel axle 210 via a fixing member 411 .

[0078] 4 , the pedal assembly 400 includes a swing support plate 410 and a pedal 420 . The swing support plate 410 is fixed to the axle 210 by a fixing member 411 . A support base 430 is mounted on the swing support plate 410 , and the pedal 420 is disposed on the support base 430 .

[0079] The axle 210 is set as a long axis. This setting ensures that the axle 210 has sufficient length to abut and fix with the swing support plate 410 of the pedal assembly 400, which can enhance the overall support strength of the pedal assembly 400 after being fixed to the axle 210, and further improve the load-bearing capacity of the pedal assembly 400, so that the support of the pedal assembly 400 is stable and reliable.

[0080] Furthermore, a flat groove 211 is formed on the wheel shaft 210 , and the fixing member 411 has a flat portion 4111 corresponding to the flat groove 211 , and the flat groove 211 and the flat portion 4111 are abutted and locked, specifically referring to FIG. 5 .

[0081] The fixing member 411 abuts against the flat groove 211 through the flat portion 4111 to fix the swing support plate 410 to the wheel axle 210, so that the swing support plate 410 and the wheel axle 210 are relatively fixed, preventing the swing support plate 410 and the wheel axle 210 from rotating relative to each other, so that the pedal assembly 400 can deflect synchronously with the wheel axle 210.

[0082] In this embodiment, referring to Figure 6, the lower frame 110 is provided with a triangular plate 111, and the triangular plate 111 includes a mounting portion 1111 and a supporting portion 1112. Two mounting portions 1111 are symmetrically provided, and the mounting portion 1111 and the supporting portion 1112 are connected by a connecting portion 1113. The mounting portion 1111 is provided with a mounting seat 112, and the wheel axle 210 is arranged on the mounting portion 1111 through the mounting seat 112, and the support wheel 300 is installed at the bottom of the supporting portion 1112.

[0083] The triangular plate 111 provides an installation base for the two electric wheels 200 and the support wheel 300, so that the two electric wheels 200 and the support wheel 300 are installed stably; the mounting seat 112 is set on the mounting part 1111 of the triangular plate 111, thereby improving the supporting strength of the mounting seat 112 and facilitating the mounting seat 112 to rotatably support the wheel axle 210.

[0084] Furthermore, the mounting seat 112 is provided with a boss 1121, and the boss 1121 is provided with a groove 1122 for abutting and mounting with the wheel axle 210. By providing the groove 1122 on the boss 1121, the wheel axle 210 is abutted and fitted with the groove 1122 through the pressing member 220, thereby facilitating the assembly of the wheel axle 210 and improving the load-bearing capacity of the mounting seat 112.

[0085] In this embodiment, referring to Figure 7, a first spring 230 is arranged between the swing support plate 410 and the mounting seat 112 of each pedal assembly 400, and a accommodating groove 1123 that can accommodate the first spring 230 is provided on the swing support plate 410 and the mounting seat 112. One end of the first spring 230 abuts against the swing support plate 410, and the other end abuts against the mounting seat 112. Therefore, when the pedal assembly 400 deflects, the first spring 230 arranged between the swing support plate 410 and the mounting seat 112 has a supporting and restoring effect on the pedal assembly 400, so that the deflection of the pedal assembly 400 is stable and reliable, and can facilitate the deflection and reset of the pedal assembly 400.

[0086] In this embodiment, specifically referring to FIG. 8 , a main controller 500 is provided in the lower frame 110 . The main controller 500 is disposed between the two electric wheels 200 . The main controller 500 is connected to the two electric wheels 200 . The main controller 500 can control the movement of the electric wheels 200 .

[0087] The main controller 500 is disposed between the two electric wheels 200 and is connected to the two electric wheels 200 , thereby facilitating control of the movement of the electric wheels 200 , so that the movement of the electric wheels 200 is smooth and reliable.

[0088] In this embodiment, a gyroscope 440 is also provided in the pedal assembly 400. The gyroscope 440 is installed on the swing support plate 410 and is connected to the main controller 500. The gyroscope 440 contains an accelerometer and a sensor. The accelerometer can measure the tilt angle of the vehicle body, and the sensor can measure the angular velocity of the vehicle body. Therefore, the gyroscope 440 can detect the tilt and deflection changes of the pedal assembly 400, thereby obtaining the instructions issued by the user by changing the center of gravity of the body to step on the pedal assembly 400, and then controlling the movement of the electric balance vehicle.

[0089] Specifically, when the user stands on the pedals 420 with both feet, the user can control the deflection of the swing support plate 410 with both feet, and the gyroscope 440 set on the swing support plate 410 detects the deflection direction and tilt angle of the swing support plate 410, and cooperates with the main controller 500 to control the electric balance vehicle to move forward, backward and turn.

[0090] Furthermore, the specific method of controlling the straight-moving and turning of the electric balance vehicle is: when the left and right pedals are tilted and deflected forward at the same time, the electric wheel 200 moves straight forward; on the contrary, when the left and right pedals are tilted and deflected backward at the same time, the electric wheel 200 moves backward; and turning right means that the left pedal is tilted and deflected backward and the right pedal is tilted and deflected forward; turning left means that the left pedal is tilted and deflected forward and the right pedal is tilted and deflected backward.

[0091] 9 and 10 , a photoelectric switch 600 is provided in the pedal assembly 400 . The photoelectric switch 600 includes a slot switch 610 and a photoelectric baffle 620 . The slot switch 610 cooperates with the photoelectric baffle 620 to identify when a user gets on or off the vehicle.

[0092] The slot switch 610 is installed on the swing support plate 410, and the photoelectric baffle 620 is installed at the bottom of the pedal 420 through the mounting column 630. The support base 430 is provided with a placement groove 4301 that allows the mounting column 630 to pass through. The bottom of the placement groove 4301 has a clearance hole 4302, and the photoelectric baffle 620 can sense the slot switch 610 through the clearance hole 4302.

[0093] When the user stands on the pedal 420 with both feet, the pedal 420 moves downward, causing the photoelectric baffle 620 to move downward through the clearance hole 4302 and approach the slot switch 610. The slot switch 610 detects the photoelectric baffle 620 and transmits a signal to the main controller 500, so that the main controller 500 can obtain the information that the user is standing on the pedal 420, and can detect the user getting on the vehicle, so that the electric balancing vehicle can enter the operating state.

[0094] In addition, a return spring 310 is provided in the placement groove 4301 and is mounted on the mounting column 630 . One end of the return spring 310 abuts against the periphery of the clearance hole 4302 , and the other end of the return spring 310 abuts against the bottom of the pedal 420 .

[0095] When the user gets off the vehicle, the return spring 310 placed in the groove 4301 can reset the pedal 420. When the pedal 420 resets and moves upward, the photoelectric barrier 620 moves away from the slot switch 610. The slot switch 610 senses and transmits a signal to the main controller 500, causing the electric balancing vehicle to enter a power-off state and the electric wheel 200 to stop moving.

[0096] 11 , in this embodiment, a power battery 114 is further included. The power battery 114 can be detachably disposed on the lower frame 110 .

[0097] The lower frame 110 is provided with a battery compartment 113, and the power battery 114 is separately arranged in the battery compartment 113, so that the power battery 114 can be easily taken out for charging, and the battery can be easily repaired or replaced; and the power battery 114 is connected to the main controller 500 to provide power to the main controller 500.

[0098] Example 2

[0099] In this embodiment, parts not described are the same or substantially the same as those in the first embodiment.

[0100] In this embodiment, another installation method of the axle 210 of the electric wheel 200 is provided. Specifically, the lower frame 110 is provided with a mounting seat 112 , and the axle 210 is installed on the mounting seat 112 through a pressing member 220 .

[0101] 12 , the lower frame 110 is provided with mounting seats 112 on both sides, and the axles 210 of the two electric wheels 200 are mounted in abutment with the mounting seats 112. The mounting seats 112 are provided with bosses 1121, and the bosses 1121 have grooves 1122 corresponding to the axles 210. The axles 210 are mounted in the grooves 1122 through the clamping members 220. A first spring 230 is provided between the lower frame 110 and the swing support plate 410, and a receiving groove 1123 for accommodating the first spring 230 is provided on the lower frame 110. One end of the first spring 230 abuts against the lower frame 110, and the other end abuts against the swing support plate 410. In this embodiment, the two electric wheels 200 are directly mounted on the lower frame 110, and the lower frame 110 plays a role of rotational support for the axles 210 of the electric wheels 200. This installation method can make the structure more compact and facilitate the installation of the electric wheels 200.

[0102] In some embodiments of the present invention, the main controller 500 includes a power supply circuit 1, a main control circuit (see FIG13 ), and a motor drive circuit 3. The battery and motor drive circuit 3 are respectively connected to the main control circuit. The pedal assembly can cooperate with the main controller 500, primarily generating electrical signals for forward movement, reverse movement, turning, or parking through the main control circuit, and transmitting these signals to the motor drive circuit 3, which then drives the corresponding wheel hub motors, thereby enabling the electric balancing vehicle to move forward, reverse, turn, or park.

[0103] Referring to Figure 12, the power supply circuit 1 is connected to the power battery 114 and may include a voltage stabilizing circuit 11, a first power supply circuit 12, and a second power supply circuit 13. The first power supply circuit 12 and the second power supply circuit 13 are each electrically connected to the voltage stabilizing circuit 11. The first power supply circuit 12 may be connected to the motor drive circuit 3. The second power supply circuit 13 may be connected to the main control circuit.

[0104] The motor drive circuit 3 includes a first motor drive circuit 31 and a second motor drive circuit 32. The main control circuit generates a corresponding drive signal based on the deflection of the swing support plate 410 and transmits the drive signal to the first motor drive circuit 31 and the second motor drive circuit 32. For example, when the drive signal is a straight-line signal, the drive signal is an electrical signal that causes the swing support plate 410 to deflect forward. The motor drive circuit 3 outputs direct current (DC) power, with a voltage range of 10V to 100V. As shown in FIG14 , the voltage is 36V.

[0105] The main control circuit can trigger control signals to the first motor control circuit and the second motor control circuit via PWM (pulse width modulation). The first motor drive circuit 31 can be a left motor drive circuit, and the second motor drive circuit 32 can be a right motor drive circuit. The left and right motor drive circuits include MOSFET driver chips for controlling the rapid start and stop of the motors and switching between forward and reverse rotation.

[0106] Preferably, the voltage circuit is activated based on the signal change of the photoelectric sensing unit 320. The slot switch 610 is provided with a transmitter and a receiver. When the photoelectric baffle 620 is away from the transmitter and the receiver, light can be emitted from the transmitter to the receiver. When the photoelectric baffle 620 is inserted between the transmitter and the receiver, the light is blocked by the photoelectric baffle 620, so that the receiver cannot receive the light. At this time, the power circuit is activated to supply power to the main control circuit and the motor drive circuit 3. The electric balance car can use the slot switch 610 for identification. When the user steps on the pedal 420 with both feet, the photoelectric baffle 620 will be inserted into the slot of the slot switch 610 to block the light. The slot switch 610 will output a voltage of 2-3V. The control chip MCU of the main control circuit recognizes that the user is getting on the car. When the user gets off the car, the photoelectric baffle 620 is away from the slot switch 610, and the output voltage of the slot switch 610 is 0V. The control chip MCU of the main control circuit will recognize that the user has gotten off the car.

[0107] Preferably, the motor drive circuit 3 includes a MOS transistor, and the drive signal drives the MOS transistor to perform a driving operation. The motor drive circuit 3 can perform a corresponding operation based on whether its MOS transistor is driven. For example, if a MOS transistor of the second motor is driven, it can indicate that a forward operation, a turning operation, etc. can be executed.

[0108] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above. For the sake of simplicity, they are not provided in detail. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that it is still possible to modify the technical solutions described in the above embodiments, or to make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention. Industrial Applicability

[0109] A three-wheeled electric balancing vehicle comprises a lower frame; two electric wheels, a support wheel, and two pedal assemblies, each electric wheel being provided with an axle, and each pedal assembly being fixedly clamped to a corresponding axle; the support wheel being disposed at the bottom of the front portion of the lower frame; and the axle being rotatably disposed on the lower frame. Two electric wheels and a support wheel are provided, and the two electric wheels are rotatably disposed on the lower frame, while the support wheel is disposed at the bottom of the front portion of the lower frame. Thus, the two electric wheels and the support wheel form a three-wheel support structure, which can effectively improve the stability of the electric balancing vehicle, giving the electric balancing vehicle good balance performance and reducing the difficulty of pedaling control. Due to the provision of the support wheel, the electric balancing vehicle can maintain a balanced state even when the battery is low, reducing the risk of tipping over by beginners or children, improving the safety performance of the electric balancing vehicle, and can be used in industry and meet industrial applicability requirements. Sequence Listing Free Content

[0110] Type your sequence listing free description paragraph here.

Claims

1. A three-wheeled electric balancing vehicle, characterized in that: include: Lower frame (110); It also comprises two electric wheels (200), a supporting wheel (300) and two pedal assemblies (400), each of the electric wheels (200) being provided with a wheel axle (210), and each of the pedal assemblies (400) being fixedly clamped to a corresponding wheel axle (210); The support wheel (300) is arranged at the bottom of the front part of the lower frame (110); The wheel axle (210) is rotatably disposed on the lower frame (110).

2. The three-wheeled electric balancing vehicle according to claim 1, characterized in that: Each of the pedal assemblies (400) is clearance-matched with the lower frame (110), and the pedal assemblies (400) and the lower frame (110) can deflect relative to each other.

3. The three-wheeled electric balancing vehicle according to claim 1, characterized in that: The wheel axle (210) is arranged as a long axis, and the pedal assembly (400) is fixedly clamped on the wheel axle (210) via a fixing member (411).

4. The three-wheeled electric balancing vehicle according to claim 3, characterized in that: The wheel shaft (210) is provided with a flat groove (211), the fixing member (411) has a flat portion (4111) arranged corresponding to the flat groove (211), and the flat groove (211) and the flat portion (4111) are abutted and clamped.

5. The three-wheeled electric balancing vehicle according to claim 1, characterized in that: Each of the electric wheels (200) comprises a wheel hub motor, and the motor shaft of the wheel hub motor constitutes the wheel axle (210).

6. The three-wheeled electric balancing vehicle according to claim 1, characterized in that: The supporting wheel (300) is a universal wheel.

7. The three-wheeled electric balancing vehicle according to claim 1, characterized in that: The lower frame (110) is provided with a mounting seat (112), and the wheel axle (210) is mounted on the mounting seat (112) via a clamping member (220).

8. The three-wheeled electric balancing vehicle according to claim 1, characterized in that: The lower frame (110) is provided with a triangular plate (111), the triangular plate (111) comprises a mounting portion (1111) and a supporting portion (1112), and the mounting portion (1111) and the supporting portion (1112) are connected via a connecting portion (1113), the wheel axle (210) is arranged on the mounting portion (1111) via a mounting seat (112), and the supporting wheel (300) is installed at the bottom of the supporting portion (1112).

9. The three-wheeled electric balancing vehicle according to claim 7 or 8, characterized in that: The mounting seat (112) is provided with a boss (1121), and the boss (1121) is provided with a groove (1122) for abutting against the wheel axle (210).

10. The three-wheeled electric balancing vehicle according to claim 7 or 8, characterized in that: A first spring (230) is provided between each of the pedal assemblies (400) and the mounting seat (112); one end of the first spring (230) abuts against the pedal assemblies (400) and the other end abuts against the mounting seat (112); the first spring (230) is used for supporting and resetting the pedal assemblies (400).

11. The three-wheeled electric balancing vehicle according to claim 1, characterized in that: A main controller (500) is arranged in the lower frame (110), and the main controller (500) is arranged between the two electric wheels (200). The main controller (500) is connected to the two electric wheels (200), and the main controller (500) can control the movement of the electric wheels (200).

12. The three-wheeled electric balancing vehicle according to claim 1, characterized in that: A gyroscope (440) is also provided in the pedal assembly (400), and the gyroscope (440) is used to sense and detect the deflection change of the pedal assembly (400).

13. The three-wheeled electric balancing vehicle according to claim 1, characterized in that: A photoelectric switch (600) is arranged in the pedal assembly (400), and the photoelectric switch (600) comprises a slot switch (610) and a photoelectric baffle (620). The slot switch (610) cooperates with the photoelectric baffle (620) to identify when a user gets on or off the vehicle.

14. The three-wheeled electric balancing vehicle according to claim 1, characterized in that: It also includes a power battery (114), and the power battery (114) can be detachably arranged on the lower frame (110).

15. The three-wheeled electric balancing vehicle according to claim 1, characterized in that: It also includes an upper frame (100) mounted in cooperation with the lower frame (110), wherein the upper frame (100) is provided with a mounting through hole (101) capable of accommodating the pedal assembly (400).

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