A safe balance car

Abstract

The present invention discloses a safe balancing car, which belongs to the technical field of balancing cars, and aims to overcome the defects of existing balancing cars that have great safety hazards. The balancing car includes a body, a hub motor and a controller. The motor shaft on the hub motor and the body are circumferentially linked and coordinated. The body has a first footrest area and a second footrest area. A pressure sensing component is provided on the balancing car to detect whether the user is standing on the body. When the pressure sensing component detects that the user is standing on the body with both feet, the controller controls the balancing car to enter the running state, otherwise the controller controls the balancing car to be in the standby state. The balancing car can enter the running state only after detecting that the user is standing on the body, so that the user can stand on the balancing car safely. Through the pressure sensing device detection, it can not only detect whether the user is standing on the body, but also detect the user's weight condition, so that the balancing car can adopt different control methods according to the user's weight to achieve a safer purpose.

Description

Technical Field

[0001] The invention belongs to the technical field of balancing vehicles and relates to a safe balancing vehicle. Background Art

[0002] Existing self-balancing scooters primarily use a gyroscope to sense the tilt of the scooter's body. A controller controls the scooter's driving state based on the sensing signal from the gyroscope. When the power switch is on, the scooter enters the running state, making it difficult for users to stand on the scooter. Users can easily fall while standing on the scooter, posing a significant safety hazard. Some self-balancing scooters also employ a barrier in the footrest area, which, in conjunction with an inductive switch inside the scooter, detects whether the user's feet are both standing on the footrest area. For example, a Chinese patent document discloses an "electric self-balancing twisting scooter," with application publication number CN104986263A. Only when both feet are standing on the footrest area does the controller activate the hub motor, making it easier for the user to stand on the scooter and operate it. However, this type of self-balancing scooter cannot select a user group. For example, using a self-balancing scooter with a child who is too young poses a safety hazard. Summary of the Invention

[0003] The present invention aims to solve the problems existing in the prior art and proposes a safe balancing vehicle, which aims to overcome the defects of the existing balancing vehicles that have great safety hazards.

[0004] The present invention is achieved in that:

[0005] A safe balancing vehicle comprises a vehicle body, a hub motor and a controller. The motor shaft on the hub motor is circumferentially linked to the vehicle body. The vehicle body has a first footrest area and a second footrest area. The vehicle body is characterized in that a pressure sensing component is provided on the balancing vehicle to detect whether a user is standing on the vehicle body. When the pressure sensing component detects that the user is standing on the vehicle body with both feet, the controller controls the balancing vehicle to enter an operating state. Otherwise, the controller controls the balancing vehicle to be in a standby state.

[0006] When the pressure sensing component detects that the user weighs greater than or equal to A kilograms and / or less than or equal to B kilograms, the controller controls the balancing vehicle to enter the running state, otherwise the controller controls the balancing vehicle to be in the standby state, where B is greater than A.

[0007] When the pressure sensing component detects that the user weighs less than C kilograms, the controller controls the maximum speed of the balance car to M kilometers per hour; when the user weighs greater than or equal to C kilograms, the controller controls the maximum speed of the balance car to N kilometers per hour, where N is greater than M.

[0008] The pressure sensing assembly includes a pressure sensor, which is fixed to the vehicle body. When a user stands on the vehicle body, the motor shaft contacts the pressure sensor so that the pressure sensor can detect the weight of the user.

[0009] The pressure sensing assembly includes a sleeve rotatably sleeved on the motor shaft, and a linkage portion is provided on the sleeve so that when the vehicle body swings to a preset angle, the linkage portion abuts against the pressure sensor, and the sleeve rotates along with the swing of the vehicle body. The sleeve is provided with a return device.

[0010] The return device is a counterweight block arranged on the sleeve.

[0011] The hub motor is equipped with a tire, the counterweight is circular, and before the linkage part contacts the pressure sensor, the lowest end of the counterweight is higher than the lowest end of the tire.

[0012] A swing rod is fixed on the sleeve, and the counterweight block is rotatably mounted on the lower end of the swing rod.

[0013] The return device is a torsion spring arranged between the sleeve and the motor shaft.

[0014] The pressure sensing assembly includes a pressure sensor, a first control member and a second control member. The first control member is set corresponding to the first footrest area, and the second control member is set corresponding to the second footrest area. When the user's feet stand on the first footrest area and the second footrest area respectively, the first control member and the second control member are pressed down so that the pressure sensor detects the user.

[0015] The present invention provides a safe balance car, which can enter the operating state only after detecting that the user stands on the car body, so that the user can stand on the balance car safely. Through the pressure sensing device, it can not only detect whether the user stands on the car body, but also detect the user's weight status, so that the balance car can adopt different control methods according to the user's weight to achieve a safer purpose. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a balancing vehicle according to Example 1;

[0017] Figure 2 This is a schematic cross-sectional view of the initial state of the balancing vehicle in Example 1;

[0018] Figure 3 for Figure 2 A magnified view of the middle part A;

[0019] Figure 4 This is a schematic diagram of the local structure of the balancing vehicle linkage part contacting the pressure sensor in Example 1;

[0020] Figure 5 This is a schematic diagram of the local structure of the balancing vehicle sleeve after it swings with the motor shaft in Example 1;

[0021] Figure 6 This is a schematic cross-sectional view of the balancing vehicle according to the second embodiment;

[0022] Figure 7 for Figure 6 Enlarged view of the middle part B;

[0023] Figure 8 This is a structural diagram of the balance vehicle of Example 3.

[0024] Explanation of the accompanying drawings: 100, vehicle body; 110, first footrest area; 120, second footrest area; 200, hub motor; 210, tire; 220, motor shaft; 310, pressure sensor; 320, sleeve; 321, rocker arm; 322, counterweight; 323, linkage part; 330, torsion spring; 340, first control member; 350, second control member. DETAILED DESCRIPTION

[0025] The following will further describe the specific embodiments of the present invention in conjunction with the accompanying drawings to make the technical solution of the present invention easier to understand and grasp. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] Example 1

[0027] This embodiment provides a balancing vehicle, such as Figure 1-2 As shown, the scooter comprises a vehicle body 100, an in-wheel motor 200, and a controller. The motor shaft 220 on the in-wheel motor 200 is circumferentially linked to the vehicle body 100. The vehicle body 100 has a first footrest area 110 and a second footrest area 120. The scooter is provided with a pressure sensor assembly to detect whether a user is standing on the vehicle body 100. When the pressure sensor assembly detects that the user's feet are standing on the vehicle body 100, the controller controls the scooter to enter an operating state; otherwise, the controller controls the scooter to enter a standby state. The scooter is provided with a power switch. When the power switch is turned on, the scooter enters a standby state and the controller enters an operating state. The battery and controller of this embodiment are both located within the in-wheel motor 200. The battery can power the controller, in-wheel motor 200, and other components. The controller is connected to the pressure sensor assembly to obtain signals from the pressure sensor assembly and controls the operation of the in-wheel motor 200 based on the signals. In other optional embodiments, the battery and controller can also be located on the vehicle body 100.

[0028] A self-balancing vehicle can be a two-wheeled scooter, with two in-wheel motors mounted at either end of the vehicle, and the first and second footrest areas positioned between the two in-wheel motors. Alternatively, a self-balancing vehicle can be a scooter, with the in-wheel motor positioned in the middle of the vehicle, with the first and second footrest areas positioned in front of and behind the in-wheel motors. This embodiment uses a unicycle scooter as an example, with a single in-wheel motor 200, and the first and second footrest areas 110 and 120 positioned in front of and behind the in-wheel motor 200, respectively.

[0029] When the pressure sensing component detects that the user weighs greater than or equal to A kilograms and less than or equal to B kilograms, the controller controls the balance vehicle to enter the operating state; otherwise, the controller controls the balance vehicle to be in the standby state, where B is greater than A. This embodiment requires detecting that the user's weight is between A kilograms and B kilograms before entering the operating state. This prevents children weighing less than A kilograms from using the balance vehicle, thereby improving the safety of the balance vehicle. It also prevents adults weighing more than B kilograms from using the balance vehicle, ensuring that the balance vehicle is not overloaded and improving the safety of the balance vehicle. For example, A is 20 and B is 100; or A is 25 and B is 95. In other optional embodiments, only the lower limit A or the upper limit B can be set.

[0030] When the pressure sensing component detects that the user weighs less than C kilograms, the controller controls the scooter's maximum speed limit to M kilometers per hour. When the user weighs C kilograms or more, the controller controls the scooter's maximum speed limit to N kilometers per hour, where N is greater than M. This embodiment of the scooter has three preset values: A, B, and C. C is between A and B, for example, C is 40. Lighter users are typically younger or less powerful, so a lower maximum speed limit helps them better control the scooter, improving safety. M can be 10, 15, 20, or 30, and N can be 20, 25, 30, or 40.

[0031] like Figure 3-5 As shown, the pressure sensing assembly includes a pressure sensor 310, which is fixed to the vehicle body 100. When a user stands on the vehicle body 100, the motor shaft 220 contacts the pressure sensor 310, allowing the pressure sensor 310 to detect the user's weight. The pressure sensing assembly includes a sleeve 320 rotatably sleeved on the motor shaft 220. The sleeve 320 is provided with a linkage portion 323. When the vehicle body 100 swings to a preset angle, the linkage portion 323 abuts the pressure sensor 310, and the sleeve 320 rotates with the swing of the vehicle body 100. The sleeve 320 is also provided with a return device.

[0032] When the balancing car is in the initial state, such as Figure 2 、 3 As shown, one end of the vehicle body 100 touches the ground, and there is a gap between the linkage part 323 and the pressure sensor 310. After the power is turned on, the pressure sensor 310 will not be affected by the return force of the return device. The pressure sensor 310 can detect the force change after the user stands on the vehicle body 100, thereby judging the user's weight.

[0033] When the body 100 of the balancing vehicle rotates to a preset angle, for example, the body 100 rotates to an angle of 5 degrees with the ground, Figure 4As shown, the linkage portion 323 contacts the pressure sensor 310, and the vehicle body 100 continues to rotate forward. Figure 2-5 From a viewing angle, left is rear and right is front. Rotating the vehicle body 100 forward is a clockwise rotation of the vehicle body 100. The return force of the return device acts on the pressure sensor 310. The return force begins to take effect when the pressure sensor 310 detects that the user's weight is greater than or equal to A kg and less than or equal to B kg, and the self-balancing vehicle enters the operating state. That is, the self-balancing vehicle enters the operating state only when the return force of the return device acts on the pressure sensor 310 and the pressure sensor 310 detects that the user's weight is greater than or equal to A kg and less than or equal to B kg. Ensure that the user adjusts their body posture before entering the operating state, and the hub motor 200 enters the operating state.

[0034] After the self-balancing vehicle enters the running state, as the vehicle body 100 further swings forward, the sleeve 320 will rotate with the vehicle body 100. The more the vehicle body 100 swings forward, the greater the return force of the return device. The self-balancing vehicle judges the state of the vehicle body 100 according to the magnitude of the return force, thereby controlling the driving state of the vehicle body 100. For example, if the vehicle body 100 tilts forward, Figure 5 As shown, when the front end of the vehicle body 100 is lower than the rear end, the scooter moves forward; when the vehicle body 100 is parallel to the ground, the scooter stops; and when the vehicle body 100 tilts backward, the scooter moves backward or brakes. In this way, the scooter's driving control is achieved through the pressure sensor 310, without the need for a separate gyroscope.

[0035] like Figure 2 As shown, the return device is a counterweight 322 provided on the sleeve 320. The counterweight 322 provides a return force through its gravity.

[0036] The wheel hub motor 200 is mounted on a tire 210. The counterweight 322 is circular. Before the linkage portion 323 contacts the pressure sensor 310, the lowest end of the counterweight 322 is higher than the lowest end of the tire 210. This prevents friction between the counterweight 322 and the ground, ensuring that the counterweight 322 hangs vertically and reducing the impact of the ground on the return force. In other optional embodiments, the counterweight 322 can also touch the ground.

[0037] like Figure 2 As shown, a swing rod 321 is fixed to the sleeve 320, and the counterweight 322 is rotatably mounted on the lower end of the swing rod 321. Once the counterweight 322 touches the ground, the counterweight 322 can rotate to reduce the impact of the ground on the counterweight 322.

[0038] Example 2

[0039] The difference between this embodiment and the first embodiment mainly lies in the return device. The return device of the first embodiment uses a counterweight block 322 , while the return device of this embodiment uses a torsion spring 330 .

[0040] Specifically, if Figure 6 、 7 As shown, the return device is a torsion spring 330 disposed between the sleeve 320 and the motor shaft 220. When the self-balancing vehicle is in the initial state, the torsion spring 330 is in its extreme position and does not generate a return force. In other optional embodiments, in the initial state of the self-balancing vehicle, the torsion spring 330 may generate a return force, limiting the position of the sleeve 320 via the stop block to prevent the return force from driving the sleeve 320 to an excessive position.

[0041] When the linkage portion 323 contacts the pressure sensor 310 , the vehicle body 100 drives the sleeve 320 to rotate forward, and the return force formed by the elastic force of the torsion spring 330 becomes larger and larger, thereby enabling the controller to determine the tilt condition of the vehicle body 100 .

[0042] The other structures of this embodiment are consistent with those of the first embodiment.

[0043] Example 3

[0044] The pressure sensing assembly of this embodiment includes a pressure sensor 310, a first control member 340, and a second control member 350. The first control member 340 is provided corresponding to the first footrest area 110, and the second control member 350 is provided corresponding to the second footrest area 120. When a user's feet stand on the first footrest area 110 and the second footrest area 120, respectively, the first control member 340 and the second control member 350 are pressed downward so that the pressure sensor 310 detects the user. This embodiment uses a gyroscope to detect the tilt angle of the vehicle body 100. When the pressure sensor 310 detects that the user's feet are respectively standing on the first footrest area 110 and the second footrest area 120, the user's weight is greater than or equal to A kilograms and less than or equal to B kilograms, and the gyroscope detects that the vehicle body 100 has swung to a preset angle, for example, an angle of less than or equal to 5 degrees between the vehicle body 100 and the horizontal plane, the balancing vehicle enters the operating state; otherwise, the balancing vehicle remains in the standby state. In other optional embodiments, the swing angle judgment of the vehicle body 100 is reduced. When the pressure sensor 310 detects that the user's feet are respectively stepped on the first footrest area 110 and the second footrest area 120, and the user's weight is greater than or equal to A kilograms and less than or equal to B kilograms, the balancing vehicle enters the running state.

Claims

1. A safe balancing vehicle, comprising a vehicle body (100), a hub motor (200) and a controller, wherein a motor shaft (220) on the hub motor (200) and the vehicle body (100) are circumferentially linked and coordinated, and the vehicle body (100) has a first pedal area (110) and a second pedal area (120), characterized in that: A pressure sensing component is provided on the balancing vehicle to detect whether a user is standing on the vehicle body (100); when the pressure sensing component detects that the user's feet are standing on the vehicle body (100), the controller controls the balancing vehicle to enter a running state; otherwise, the controller controls the balancing vehicle to enter a standby state; The pressure sensing assembly includes a pressure sensor (310), the pressure sensor (310) being fixed on the vehicle body (100), and when a user stands on the vehicle body (100), the motor shaft (220) contacts the pressure sensor (310) so that the pressure sensor (310) can detect the weight of the user; The pressure sensing assembly comprises a sleeve (320) rotatably sleeved on the motor shaft (220); a linkage portion (323) is provided on the sleeve (320), so that when the vehicle body (100) swings to a preset angle, the linkage portion (323) abuts against the pressure sensor (310), and the sleeve (320) rotates following the swing of the vehicle body (100); and the sleeve (320) is provided with a return device.

2. A safe balancing vehicle according to claim 1, characterized in that: When the pressure sensing component detects that the user weighs greater than or equal to A kilograms and / or less than or equal to B kilograms, the controller controls the balancing vehicle to enter the running state, otherwise the controller controls the balancing vehicle to be in the standby state, where B is greater than A.

3. A safe balancing vehicle according to claim 1, characterized in that: When the pressure sensing component detects that the user weighs less than C kilograms, the controller controls the maximum speed of the balance car to M kilometers per hour; when the user weighs greater than or equal to C kilograms, the controller controls the maximum speed of the balance car to N kilometers per hour, where N is greater than M.

4. A safe balancing vehicle according to claim 1, characterized in that: The return device is a counterweight block (322) arranged on the sleeve (320).

5. A safe balancing vehicle according to claim 4, characterized in that: The hub motor (200) is equipped with a tire (210), the counterweight (322) is circular, and before the linkage portion (323) contacts the pressure sensor (310), the lowest end of the counterweight (322) is higher than the lowest end of the tire (210).

6. A safe balancing vehicle according to claim 4, characterized in that: A swing rod (321) is fixed on the sleeve (320), and the counterweight (322) is rotatably mounted on the lower end of the swing rod (321).

7. A safe balancing vehicle according to claim 1, characterized in that: The return device is a torsion spring (330) arranged between the sleeve (320) and the motor shaft (220).

8. A safe balancing vehicle according to claim 1, characterized in that: The pressure sensing assembly includes a pressure sensor (310), a first operating member (340) and a second operating member (350), wherein the first operating member (340) is arranged corresponding to the first footrest area (110), and the second operating member (350) is arranged corresponding to the second footrest area (120). When the user's feet stand on the first footrest area (110) and the second footrest area (120) respectively, the first operating member (340) and the second operating member (350) are pressed down so that the pressure sensor (310) detects the user.

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