A child's electric vehicle with rapid braking

Abstract

The application discloses a child electric vehicle capable of quick braking, which comprises a vehicle chassis, a steering front wheel group for direction control and a driving rear wheel group for driving vehicle movement are arranged on the vehicle chassis, the driving rear wheel group comprises a rear wheel shaft, a motor and a control module are arranged on the rear wheel shaft, a brake module is further arranged on the rear wheel shaft, the brake module comprises a brake shell, brake pads are arranged in the brake shell, and the brake pads are elastically embraced on the rear wheel shaft. The application provides the child electric vehicle capable of quick braking, which can actively brake and slow down the speed when encountering a step, can automatically stop the vehicle when encountering the step, simultaneously reduces the angle of the vehicle front inclination, prevents the people in the vehicle from rolling forward, protects the safety of the people in the vehicle and improves the safety of the vehicle.

Description

Technical Field

[0001] This invention relates to the field of children's electric vehicle technology, and in particular to a children's electric vehicle with rapid braking capability. Background Technology

[0002] A child electric car is a motor-driven vehicle that children can drive and sit in. There are two main control methods for child electric cars: one is infrared remote control by parents, and the other is that children control the car themselves while on the vehicle. Generally, the speed of a child electric car is controlled within 5 km / h.

[0003] As a type of vehicle that children can drive, the most important issue for children's electric vehicles is safety. Currently, most children's electric vehicles on the market stop moving when the motor stops rotating. However, children do not have the awareness to brake actively while riding. When encountering a slope, the vehicle will slide down the slope on its own under the action of gravity, causing the vehicle to accelerate and thus creating a danger.

[0004] At the same time, when a child drives a vehicle to a downward step, the child does not have the awareness to brake actively, which may cause the vehicle to slide down the step. During the slide, the vehicle may overturn, causing injury to the child. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a children's electric vehicle capable of rapid braking.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a child electric vehicle with rapid braking capability, comprising a vehicle chassis, on which are mounted a steering front wheel assembly for directional control and a drive rear wheel assembly for driving the vehicle. The drive rear wheel assembly includes a rear axle, on which are mounted a motor and a control module. A brake module is also mounted on the rear axle, comprising a brake housing, within which are brake pads elastically wrapped around the rear axle. A brake cable for tensioning the brake pads is connected to the brake pads, and a first magnetic block is mounted on the brake cable. The first magnetic block is designed to limit sliding. The control module, housed within the brake housing, includes a rotating block with multiple slots. A second magnetic block is slidably disposed within each slot. One end of the second magnetic block contacts a first elastic element, while the other end contacts the upper surface of the slot. Rotation of the rear wheel axle causes the rotating block to rotate, and the second magnetic block slides outward under centrifugal force. The rotating block is located on the side of the brake housing. When the rear wheel axle reaches the set maximum speed, the second magnetic block slides outward until it is level with the first magnetic block, and the two are magnetically connected. As the speed of the rear wheel axle increases due to external force, the second magnetic block drives the first magnetic block to move outward, thereby tightening the brake pads.

[0007] Its beneficial effect is that when the electric car for children is traveling down a slope, the vehicle can automatically apply the brakes according to the speed, thereby reducing the speed and ensuring the safety of the children inside the vehicle.

[0008] In the above scheme, preferably, the steering front wheel assembly includes a front fork assembly and a front wheel assembly. The front wheel assembly is mounted on the front fork assembly. The front fork assembly includes an elastic telescopic member. When the front wheel assembly is suspended in mid-air, the elastic telescopic member can extend to move the front wheel assembly downward. The elastic telescopic member includes a sliding sleeve and a sliding rod slidably mounted on the sliding sleeve. The front end of the first pull rope is connected to the upper end of the sliding rod, and the rear end of the first pull rope is connected to the brake cable. When the front wheel assembly descends, the brake cable is tightened by the first pull rope.

[0009] In the above scheme, preferably, the front fork assembly is provided in two sets, which are located on the left and right sides of the front end of the vehicle chassis, respectively, and are connected to the left and right front wheel assemblies. When the left and right front wheel assemblies are in the air, the brake cable can be tightened.

[0010] Its beneficial effect is that when the vehicle encounters a step, it can automatically and quickly stop to prevent falling and further ensure the safety of the people inside the vehicle.

[0011] In the above-mentioned scheme, preferably, the vehicle chassis is further provided with an auxiliary braking device, which includes an airbag, an air tank, a control device, and a gripping floor. The airbag is located at the front end of the vehicle chassis and is connected to the air tank through a pipe. The gripping floor includes a guide shaft and is guided and slidably mounted on the lower end surface of the vehicle chassis through the guide shaft, and is located at the rear end of the vehicle. The control device is located on the pipe and is connected to the first pull rope on the left and right front wheel assemblies. When both left and right front wheel assemblies move downward, the control device controls the pipe to open, so that the airbag is inflated to support the front end of the vehicle, and at the same time, the gripping floor is unlocked so that the gripping floor contacts the ground.

[0012] In the above scheme, preferably, the control device includes a first sliding plate and a second sliding plate, which are laterally elastically slidably disposed on the pipe. The first sliding plate is connected to the first pull rope of the left front fork assembly, and the second sliding plate is connected to the first pull rope of the right front fork assembly. Both the first and second sliding plates are provided with through holes. When the first and second sliding plates are pulled backward at the same time, the through holes communicate with the channel inside the pipe, so that the pipe is in a smooth state.

[0013] In the above scheme, preferably, the guide shaft is provided with a first locking hole and a second locking hole, and the rear ends of the first sliding plate and the second sliding plate are provided with a second elastic element, so that the front ends of the first sliding plate and the second sliding plate respectively abut against the first locking hole and the second locking hole to lock the gripping plate.

[0014] The beneficial effects of this invention are: This invention provides a child electric vehicle that can brake quickly, actively brake when encountering steps to slow down the vehicle, automatically stop the vehicle when encountering steps, and at the same time reduce the angle of the vehicle's forward tilt to prevent the people inside the vehicle from rolling forward, thus protecting the safety of the people inside the vehicle and improving the safety of the vehicle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention.

[0016] Figure 2 This is a cross-sectional view of the present invention.

[0017] Figure 3 This is a longitudinal sectional view of the present invention.

[0018] Figure 4 This is a partially enlarged cross-sectional view of the brake module of the present invention.

[0019] Figure 5 This is a cross-sectional view of the brake module of the present invention.

[0020] Figure 6 This is a cross-sectional view of the steering front wheel assembly of the present invention.

[0021] Figure 7 This is a partial enlarged view of the auxiliary braking device of the present invention. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: See also Figures 1-7 A child electric vehicle with rapid braking includes a vehicle chassis 1, a steering front wheel assembly 2 for directional control, a drive rear wheel assembly 3 for driving the vehicle, a brake module 4 for deceleration, and an auxiliary braking device 5 for assisting the vehicle to stop.

[0023] The front steering wheel assembly 2 includes a front fork assembly 21 and a front wheel assembly 22. The front wheel assembly 22 is mounted on the front fork assembly 21, and there are two sets of front fork assemblies 21 located on the left and right sides of the front end of the vehicle chassis 1. The front wheel assembly 22 includes a front wheel frame 221 and a front wheel 222. The front wheel 222 is rotatably mounted on the front wheel frame 221. The front fork assembly 21 includes an elastic telescopic member 23 and a connecting rod 211. One end of the connecting rod 211 is rotatably mounted on the vehicle chassis 1, and the other end is rotatably mounted on the front wheel frame 221. The elastic telescopic member 23 includes a sliding sleeve 231, a sliding rod 232, a first pull rope 233, and a third elastic member 234. The upper end of the sliding sleeve 231 is rotatably mounted on the vehicle chassis 1, and the sliding rod 232 is rotatably mounted on the front wheel frame 221. The guide slide is mounted on the sliding sleeve 231 at one end and rotated on the front wheel frame 221 at the other end. Both the sliding sleeve 231 and the sliding rod 232 are provided with limiting components. The third elastic element 234 is sleeved on the sliding sleeve 231 and the sliding rod 232, and its two ends respectively abut against the limiting components of the sliding sleeve 231 and the sliding rod 232, so that there is an elastic force between the frame and the front wheel. When the area under the front wheel is empty, the sliding rod 232 slides downward relative to the sliding sleeve 231 under the action of the third elastic element 234, so that the front wheel 222 moves downward. One end of the first pull rope 233 is connected to the upper end of the sliding rod 232, so when the area under the front wheel 222 is empty, the first pull rope 233 can be pulled to move.

[0024] The rear wheel assembly 3 includes a rear axle 31, on which a motor 32 for vehicle movement and a control module 33 are mounted. The control module 33 includes a rotating block 331, which is circular and fixedly mounted on the rear axle 31. Multiple slots 332 are evenly distributed around the circumference of the rotating block 331. A guide post is fixedly mounted in each slot 332. A second magnetic block 333 is slidably mounted on the guide post, and a first elastic element 334 is sleeved on the guide post. The two ends of the first elastic element 334 respectively abut against the second magnetic block 333 and the upper end of the slot 332. Under the action of the first elastic element 334, the second magnetic block 333 presses against the lower end of the slot 332, i.e., in the direction of the center of the circle. When the rear axle 31 rotates, the second magnetic block 333 moves outward in the direction of the first elastic element 334 under the action of centrifugal force. The faster the speed of the rear axle 31, the greater the outward displacement of the second magnetic block 333.

[0025] The brake module 4 includes a brake housing 41, brake pads 42, and a brake cable 43. The brake pads 42 are divided into upper and lower brake pads, which are elastically slidably disposed within the brake housing 41 and encircle the rear wheel axle 31. The end of the brake cable 43 is connected to both the upper and lower brake pads. When the brake cable 43 is tightened, the upper and lower brake pads move towards the center of the rear wheel axle 31, thereby contacting the rear wheel axle 31. The tighter the brake cable 43 is pulled, the greater the friction between the brake pads and the rear wheel axle 31, and thus the better the braking effect. A sliding cavity is also provided on the brake housing 41, and a first magnetic block 431 is slidably disposed in the sliding cavity. At the same time, the first magnetic block 431 is fixedly disposed on the brake cable. Moving the first magnetic block 431 upward tightens the brake cable.

[0026] The rotating block 331 is located on the side of the brake housing 41. When the rear wheel axle 31 rotates to the set maximum speed, the distance between the second magnetic block 333 and the axis of the rear wheel axle 31 is the same as the distance between the first magnetic block 431 and the axis of the rear wheel axle 31 in the initial state. Therefore, the two are magnetically connected. When encountering a slope, the vehicle accelerates downhill under its own weight. At this time, the speed of the rear wheel axle 31 increases, the centrifugal force on the second magnetic block 333 increases, and it moves outward. At the same time, it drives the first magnetic block 431 to move outward as well, thereby tightening the brake cable 43, reducing the speed of the rear wheel axle 31, thereby automatically controlling the speed of the vehicle and ensuring the safety of the vehicle.

[0027] In the steering front wheel assembly 2, the rear ends of the first pull rope 233 in the left and right front fork assemblies 21 are both connected to the brake cable 43. That is, when the vehicle encounters a step while driving, the child does not have the awareness to brake actively. When one front wheel enters the step, the vehicle can still maintain balance under the action of the three wheels. The front wheel 222 moves downward, and the brake cable 43 is tightened by the first pull rope 233, so that the brake pad 43 locks on the rear wheel axle 31, and the vehicle stops moving forward quickly.

[0028] The auxiliary braking device 5 includes an airbag 51, an air tank 52, a control device 53, and a gripping floor 54. The airbag 51 is located at the front end of the vehicle chassis 1 and is connected to the air tank 52 through a pipe 55. A guide shaft 541 is provided on the upper surface of the gripping floor 54. A first locking hole 5411 and a second locking hole 5412 are provided on the guide shaft 541. The gripping floor 54 is guided and slidably disposed on the lower surface of the vehicle chassis 1 through the guide shaft 541 and is located at the rear end of the vehicle. The control device 53 includes a first sliding plate 531 and a second sliding plate 532. Both the first sliding plate 531 and the second sliding plate 532 are provided with through holes 5311. Two transverse sliding cavities are provided in the pipe 55. The first sliding plate 531 and the second sliding plate 532 are slidably disposed in the transverse sliding cavities of the pipe 55. A second elastic member 533 is provided at one end of the rear end of the first sliding plate 531 and the second sliding plate 532. The other end of the second elastic member 533 is provided at the rear end of the sliding cavity.

[0029] In the initial state, the front ends of the first sliding plate 531 and the second sliding plate 532, under the action of the second elastic member 533, respectively abut against the first locking hole 5411 and the second locking hole 5412, locking the gripping plate 54. Simultaneously, the first sliding plate 531 and the second sliding plate 532 block the passage within the pipe 55. The rear end of the first sliding plate 531 is connected to the first pull rope 233 of the left front fork assembly 21, and the rear end of the second sliding plate 532 is connected to the first pull rope 233 of the right front fork assembly 21. When one of the front wheels 222 falls, the pipe 55... With the system in a blocked state and the gripping floor 54 locked, when both front wheels 222 simultaneously lose contact with the ground, the pipe 55 opens, and the high-pressure gas in the air tank 52 rushes into the airbag 51, causing the airbag 51 to inflate. The lower end of the airbag 51 touches the step, thus rubbing against the bottom of the step, increasing friction and causing the vehicle to brake quickly. The airbag 51 supports the step, thereby reducing the vehicle's forward tilt angle and preventing children inside the vehicle from rolling forward. At the same time, the gripping floor 54 unlocks and slides down, with the bottom surface of the gripping floor 54 rubbing against the ground, further accelerating the vehicle's braking.

[0030] The gripping floor 54 is provided with a glue storage cavity 542 containing liquid viscous glue. A glue outlet hole 543 is provided on the bottom surface of the gripping floor 54, communicating with the glue storage cavity 542. A piston ring 5421 is also elastically slidably disposed within the glue storage cavity 542. A third locking hole 5423 is provided on the side of the piston ring 5421, and a locking element 544 elastically contacts the third locking hole 5423, locking the piston ring 5421 to the upper end of the glue storage cavity 542. A fourth elastic element 5424 contacts the upper end of the piston ring 5421, and the fourth elastic element 5424 is initially in a tensile state. An electromagnetic block 5441 is provided at the rear end of the locking element 544. When the gripping floor 54 falls, the electromagnetic block 5441 is automatically energized, attracting the locking element 544 backward. This unlocks piston ring 5421, which slides downward under the action of the fourth elastic element 5424, pushing the adhesive outward from the adhesive outlet 543. When the gripping floor 54 lands on the ground, its bottom surface is filled with adhesive, further assisting in stopping the vehicle. A pin 5422 is slidably disposed in the adhesive storage cavity 542. The front end of the pin 5422 can slide downward out of the bottom surface of the gripping floor 54. The pin 5422 is limited and slidably disposed on the piston ring 5421. After the piston ring 5421 moves downward, the limitation on the downward sliding of the pin 5422 disappears, allowing it to slide freely downward. When the gripping floor 54 lands on the ground, the tip of the pin 5422 touches the ground and slides into the gap in the ground, thereby preventing the vehicle from moving forward and further assisting in stopping the vehicle.

[0031] The piston ring 5421 can only be unlocked when the solenoid block 5441 is energized. Therefore, when the vehicle is powered on and in motion, the piston ring 5421 unlocks and slides downward. At the same time, a solenoid valve is also provided on the air tank 52. Only when the vehicle is powered on and in motion can the air tank 52 deliver compressed air to the pipeline 55.

[0032] Its working principle or usage method is as follows:

[0033] When encountering a slope, the vehicle accelerates downhill under its own weight, increasing the rotational speed of the rear axle 31. This increases the centrifugal force on the second magnetic block 333, causing it to move outward. Simultaneously, it pulls the first magnetic block 431 outward, thereby tightening the brake cable 43 and reducing the rotational speed of the rear axle 31. This automatically controls the vehicle's rotational speed and ensures vehicle safety.

[0034] When the vehicle encounters a step while driving, the child does not have the awareness to brake actively. When one of the front wheels enters the step, the vehicle can still maintain balance under the action of the three wheels. However, the front wheel 222 moves downward, and the brake cable 43 is tightened through the first pull rope 233, thereby locking the brake pads 43 onto the rear wheel axle 31, causing the vehicle to stop moving forward quickly.

[0035] When one of the front wheels 222 falls, the pipe 55 is blocked and the gripping floor 54 is locked. At this time, the brake module 4 works to stop the vehicle. When both front wheels 222 fall simultaneously, the pipe 55 opens and the high-pressure gas in the air tank 52 rushes into the airbag 51, causing the airbag 51 to inflate. The lower end of the airbag 51 touches the step, thus rubbing against the bottom of the step, increasing friction and causing the vehicle to brake quickly. The airbag 51 supports the step, thereby reducing the angle of the vehicle's forward tilt and preventing the child inside the vehicle from rolling forward. At the same time, the gripping floor 54 unlocks and slides down. The bottom of the gripping floor 54 rubs against the ground, further accelerating the vehicle's braking.

[0036] When the gripping floor 54 falls, the electromagnetic block 5441 is automatically energized, which attracts the locking piece 544 backward, thereby unlocking the piston ring 5421. The piston ring 5421 slides downward under the action of the fourth elastic piece 5424, pushing the adhesive outward from the adhesive outlet 543. When the gripping floor 54 lands on the ground, the bottom surface is filled with adhesive, further assisting in stopping the vehicle. When the gripping floor 54 lands on the ground, the tip of the pin 5422 touches the ground and slides into the gap in the ground, thereby preventing the vehicle from continuing to move forward and further assisting in stopping the vehicle.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A child electric vehicle capable of rapid braking, characterized in that: The vehicle includes a vehicle chassis (1), on which a steering front wheel assembly (2) for steering control and a drive rear wheel assembly (3) for driving the vehicle to move are provided. The drive rear wheel assembly (3) includes a rear wheel axle (31), on which a motor (32) and a control module (33) are provided. A brake module (4) is also provided on the rear wheel axle (31). The brake module (4) includes a brake housing (41). A brake pad (42) is provided inside the brake housing (41). The brake pad (42) elastically wraps around the rear wheel axle (31). A brake cable (43) for tightening the brake pad (42) is connected to the brake pad (42). A first magnetic block (431) is provided on the brake cable (43). The first magnetic block (431) is slidably positioned inside the brake housing (41). The control module (33) includes a rotating block (331), which has multiple opening slots (332). A second magnetic block (333) is slidably disposed in each opening slot (332). One end of the second magnetic block (333) touches the first elastic element (334), and the other end touches the upper surface of the opening slot (332). The rear wheel axle (31) rotates, driving the rotating block (331) to rotate. The second magnetic block (333) slides outward under the action of centrifugal force. The rotating block (331) is located on the side of the brake housing (41). When the rear wheel axle (31) rotates to the set maximum speed, the second magnetic block (333) slides outward to be level with the first magnetic block (431). The two are magnetically connected. The speed of the rear wheel axle (31) increases due to the influence of external force. The second magnetic block (333) drives the first magnetic block (431) to move outward, thereby tightening the brake pad (42). The steering front wheel assembly (2) includes a front fork assembly (21) and a front wheel assembly (22). The front wheel assembly (22) is mounted on the front fork assembly (21). The front fork assembly (21) includes an elastic telescopic member (23). When the front wheel assembly (22) is in the air below, the elastic telescopic member (23) can extend to move the front wheel assembly (22) downward. The elastic telescopic member (23) includes a sliding sleeve (231) and a sliding rod (232) slidably mounted on the sliding sleeve (231). The front end of the first pull rope (233) is connected to the upper end of the sliding rod (232). The rear end of the first pull rope (233) is connected to the brake cable (43). When the front wheel assembly (22) descends, the brake cable (43) is tightened by the first pull rope (233).

2. A child electric vehicle with rapid braking according to claim 1, characterized in that: The front fork assembly (21) is provided in two sets, and is located on the left and right sides of the front end of the vehicle chassis (1), respectively, and is connected to the left and right front wheel assemblies (22). When the left and right front wheel assemblies (22) fall into the air, they can tighten the brake cable (43).

3. A child electric vehicle with rapid braking according to claim 2, characterized in that: The vehicle chassis (1) is also equipped with an auxiliary braking device (5). The auxiliary braking device (5) includes an airbag (51), an air tank (52), a control device (53), and a gripping floor (54). The airbag (51) is located at the front end of the vehicle chassis (1) and is connected to the air tank (52) through a pipe (55). The gripping floor (54) includes a guide shaft (541). The gripping floor (54) is guided and slidably mounted on the lower end surface of the vehicle chassis (1) through the guide shaft (541) and is located at the rear end of the vehicle. The control device (53) is located on the pipe (55) and is connected to the first pull rope (233) on the left and right front wheel assemblies (22). When the left and right front wheel assemblies (22) move downward, the control device (53) controls the pipe (55) to open, so that the airbag (51) is inflated to support the front end of the vehicle, and at the same time, the gripping floor (54) is unlocked so that the gripping floor (54) contacts the ground.

4. A child electric vehicle with rapid braking according to claim 3, characterized in that: The control device (53) includes a first sliding plate (531) and a second sliding plate (532). The first sliding plate (531) and the second sliding plate (532) are laterally elastically slidably disposed on the pipe (55). The first sliding plate (531) is connected to the first pull rope (233) of the left front fork assembly (21), and the second sliding plate (532) is connected to the first pull rope (233) of the right front fork assembly (21). Both the first sliding plate (531) and the second sliding plate (532) are provided with through holes (5311). When the first sliding plate (531) and the second sliding plate (532) are pulled backward at the same time, the through holes (5311) are connected to the channel in the pipe (55), so that the pipe (55) is in a smooth state.

5. A child electric vehicle with rapid braking according to claim 4, characterized in that: The guide shaft (541) is provided with a first locking hole (5411) and a second locking hole (5412). The rear ends of the first sliding plate (531) and the second sliding plate (532) are provided with second elastic elements (533), so that the front ends of the first sliding plate (531) and the second sliding plate (532) respectively abut against the first locking hole (5411) and the second locking hole (5412) to lock the gripping plate (54).

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