CN114633836B

CN114633836B - Children's balance car

Info

Publication number: CN114633836B
Application number: CN202210451186.7A
Authority: CN
Inventors: 高培浩
Original assignee: Xingtai Zhongzhou Automobile Co ltd
Current assignee: Xingtai Zhongzhou Automobile Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2023-04-11
Anticipated expiration: 2042-04-27
Also published as: CN114633836A

Abstract

The invention relates to a balance car for children, which comprises a frame, wheels and a steering mechanism, wherein a pin rod and a damping mechanism matched with the pin rod are arranged between a vertical pipe of a front fork and a head pipe of the frame by the steering mechanism, so that the appearance of the balance car is kept clean.

Description

Children's balance car

Technical Field

The invention relates to a steering mechanism of a child balance car and the child balance car comprising the steering mechanism.

Background

The balance vehicle for children is also called as a scooter and is characterized in that: the simple bicycle is a simple bicycle which is provided with two wheels, no pedals, no power assistance, no transmission chain and no brake, provides sliding power by pedaling, and is a walking, sports and entertainment tool suitable for 2-6-year-old babies at school age. The balance car for children is an exercise mode which is very helpful for children, can increase physical strength, is helpful for strengthening the strength of leg muscles, and indirectly stimulates growth and development. And the exercise in the form can be easily integrated into daily life, for example, children are common on the way to kindergarten, in green areas of districts and in balance cars in park squares.

The balance ability is relatively poor because arm and wrist strength are not enough for younger babies (such as 2-3 years old), and the stability of handlebar is difficult to master when riding the balance car, and the bad direction and balance of control, consequently falls down relatively easily, especially at the speed of a motor vehicle very easily falls down, falls to hinder when the handlebar suddenly wide-angle deflects.

In the prior art, in order to protect a baby in a beginner stage and improve the safety of a balance car, the balance car in a door-entering stage usually adopts a measure that a handlebar limits steering by 60 degrees, namely the handlebar can only rotate within a range of 60 degrees, but even if the limitation of the steering angle of the handlebar is carried out, a greater risk still exists, if the limitation of the handlebar angle is too small, riding and turning are not facilitated, and if the angle is larger, the protection effect on the child is not ideal; and, adopt hard spacing measure, can't realize the handlebar and turn to the free regulation of angle.

In addition, there is no limitation on the steering angle of the handle bar for a middle-and high-order balance car, and in recent years, because of the large increase in the number of sales of the balance car for children, the race game for the balance car for children is more and more popular with parents and infants, and although the children who participate in the race are required to wear protectors such as helmets and kneepads, and are not seriously injured after falling down, it is a better choice to avoid falling down under the condition that the vehicle speed is fast, and particularly, the injury can be effectively avoided when the protectors of children are incomplete.

Disclosure of Invention

The invention aims to provide a steering mechanism of a child balance car and the child balance car comprising the steering mechanism, so that the problem that the car is out of control due to sudden out-of-control steering of a handlebar in a state that the child balance car runs quickly or in an accelerated state is avoided.

In order to solve the problems, the technical scheme adopted by the invention is as follows:

the utility model provides a children's balance car steering mechanism, its includes the head pipe of frame and the riser of front fork, the riser suit is in the head pipe, its key technology lies in: the telescopic vertical pipe is characterized in that a telescopic pin rod and a driving device for driving the pin rod to stretch are arranged in the vertical pipe, a damping mechanism for limiting the rotation of the vertical pipe is arranged in the head pipe, and the pin rod extends out of the vertical pipe and is matched with the damping mechanism to limit the rotation of the vertical pipe.

As an embodiment of the present invention, a sleeve for installing the pin rod is fixedly disposed in the vertical pipe, the driving device drives the pin rod to slide along the sleeve, a sliding groove is disposed on the sleeve, and the pin rod is connected to the driving device through the sliding groove.

As an embodiment of the present invention, the driving device includes a servo motor and a transmission mechanism, one end of the transmission mechanism is connected to the servo motor, and the other end of the transmission mechanism is connected to the pin rod, and the servo motor drives the pin rod to move in the sleeve through the transmission mechanism.

As an embodiment of the present invention, the driving device includes a driving lever mechanism and a transmission mechanism, one end of the transmission mechanism is connected to the driving lever mechanism, and the other end of the transmission mechanism is connected to the pin rod, and the driving lever mechanism drives the pin rod to move in the sleeve through the transmission mechanism.

As an embodiment of the present invention, the transmission mechanism is a crank link mechanism.

As an embodiment of the present invention, the damping mechanism is a torsion spring component disposed in the head pipe, and the pin rod extends out of the vertical pipe to be adapted to the torsion spring component, and is constrained by the torsion spring component so that the left and right rotation of the pin rod is hindered.

In one embodiment of the present invention, a clearance is provided between the pin and the engagement portion between the damping mechanism and the pin, and the damping mechanism does not generate an interference within the clearance.

As an embodiment of the invention, the gap is matched with the pin rod, so that after the vertical pipe extends out of the pin rod, the free steering angle of the vertical pipe is 30 to 60 degrees.

As an embodiment of the present invention, the damping mechanism is a spring damper or a hydraulic damper disposed on the head pipe or the frame, a matching portion adapted to the pin rod is disposed in the vertical pipe, the left and right ends of the matching portion are respectively and fixedly connected with pull wires, and the other ends of the two pull wires are respectively and fixedly connected with the end of the piston rod of the spring damper or the hydraulic damper by winding around the vertical pipe from different directions.

As an embodiment of the present invention, the spring damper or the hydraulic damper is disposed on the frame, and the pull wire penetrates through the head pipe and is connected to the spring damper or the hydraulic damper.

As an implementation manner of the present invention, the present invention further includes a speed measurement mechanism and a controller, wherein the speed measurement mechanism is configured to monitor a speed of the balance car in real time, the controller obtains information of the speed monitored by the speed measurement mechanism, and when the speed is greater than a threshold set by the controller, the controller controls the driving device to operate, so that the pin rod extends out.

The invention also provides a children balance car, which comprises the steering mechanism of the children balance car.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:

according to the steering mechanism of the balance car for children, the pin rod and the damping mechanism matched with the pin rod are arranged between the vertical pipe of the front fork and the head pipe of the car frame, so that the appearance of the balance car is kept clean, particularly, the pin rod is matched with the damping mechanism after extending out, the damping mechanism can limit the vertical pipe to rotate freely, the resistance of the damping mechanism needs to be overcome when the vertical pipe rotates, and therefore the phenomenon that a child suddenly steers at a large angle under the uncontrolled condition to cause falling can be avoided.

In the steering mechanism of the children balance car, the pin rod is driven by the driving mechanism to stretch, when the pin rod is in the extending state, the damping mechanism acts, and when the pin rod is in the retracting state, the damping mechanism does not act, so that the damping mechanism can selectively restrict and limit the rotation of the stand pipe, and has higher flexibility and selectivity. And also provides a structural basis for the intelligent control of the balance car at the mechanism.

The child balance car with the steering mechanism provided by the invention can limit the free steering of the handle bars through the damping mechanism, so that the safety performance of the balance car is improved. The pin rod can be controlled to stretch and retract through the speed measuring mechanism controller, so that the balance car is more intelligent.

Drawings

Fig. 1 is a schematic overall structure diagram of a child balance car.

Fig. 2 is a schematic view of the internal structure of the head pipe.

Fig. 3 is an enlarged schematic view of a partial structure in the head pipe.

Fig. 4 is a schematic view of the pin in the retracted state.

Fig. 5 is a schematic view of the pin in the extended state.

FIG. 6 is a schematic view of the pin cooperating with another damping mechanism.

Fig. 7 is a schematic structural view of the crank mechanism.

Wherein: 100 frames, 200 wheels;

the device comprises a 1-head pipe, a 2-vertical pipe, a 3-pin rod, a 4-sleeve pipe, a 4-1 sliding chute, a 5-servo motor, a 6-torsion spring assembly, a 6-1 first torsion spring, a 6-2 second torsion spring, a 7-crank link mechanism, a 7-1 rotating wheel, a 7-2 connecting rod, an 8 gap, a 9 matching part, a 10 pull wire, a 11 sliding rail, a 12-wire pipe, a 13 through hole, a 14-spring damper, a 15 induction probe, a 16 induction magnet, a 17-torsion spring accommodating groove, an 18 rubber pad and a 19-spring damper.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following description of the present invention is given for clarity and completeness.

The children balance car shown in fig. 1 comprises a car frame 100 and wheels 200, wherein the car frame 100 is made of carbon steel or aluminum alloy materials, the front wheels 200 and the rear wheels 200 are respectively arranged at the front and the rear, and the size of the wheels 200 is 10-16 inches.

The embodiment discloses a children balance car which comprises a steering mechanism, wherein the steering mechanism is provided with a damping mechanism and is used for limiting free rotation of a handlebar.

As shown in fig. 2, the steering mechanism includes a head pipe 1 of the frame 100 and a stem pipe 2 of the front fork, and the stem pipe 2 is fixedly connected to the handle bar. The vertical pipe 2 is sleeved in the head pipe 1, a bearing is arranged between the vertical pipe 2 and the head pipe 1, and a cavity is reserved between the vertical pipe 2 and the head pipe 1. The telescopic limiting device is characterized in that a telescopic pin rod 3 and a driving device for driving the pin rod 3 to stretch are arranged in the vertical pipe 2, a damping mechanism for limiting the rotation of the vertical pipe is arranged in the head pipe 1, and the pin rod 3 extends out of the vertical pipe and is matched with the damping mechanism to limit the rotation of the vertical pipe 2.

As shown in fig. 3, 4 and 7, a sleeve 4 for mounting the pin rod 3 is fixedly arranged in the riser 2, the driving device drives the pin rod 3 to slide along the sleeve 4, a sliding groove 4-1 is arranged on the sleeve 4, the pin rod 3 is connected with the driving device through the sliding groove 4-1, the sliding groove 4-1 is a sliding space left for a component for connecting the pin rod 3 and the driving device, as an embodiment, the sliding groove 4-1 adopts a long slotted hole, and the sliding distance of the pin rod 3 can be limited through the long slotted hole.

The driving device comprises a servo motor 5 and a transmission mechanism, one end of the transmission mechanism is connected with the servo motor 5, the other end of the transmission mechanism is connected with the pin rod 3, and the servo motor 5 drives the pin rod 3 to move in the sleeve 4 through the transmission mechanism. As shown in fig. 7, the transmission mechanism is a crank link mechanism 7, and includes a rotating wheel 7-1 and a connecting rod 7-2, the edge of the rotating wheel 7-1 far from the center of circle is hinged with one end of the connecting rod 7-2, and the other end of the connecting rod 7-2 is hinged with the pin rod 3; planes are arranged on two sides of the pin rod 3, so that the pin rod can be conveniently abutted against the end part of the torsion spring; as shown in fig. 4, when the pin rod 3 is in the retracted state, an included angle between the connecting rod 7-2 and the pin rod 3 is smaller than 45 degrees, so that the rotating wheel 7-1 rotates counterclockwise (with reference to fig. 4) to push the pin rod 3 to extend out smoothly, and a hole for the pin rod 3 to enter and exit is formed right in front of the stand pipe 2 and corresponding to the pin rod 3. In order to facilitate the assembly of the driving device, the transmission mechanism, the pin rod 3 and the like in the vertical pipe 2, the vertical pipe 2 can adopt a form of welding two semicircular pipe shells, namely the driving device, the transmission mechanism, the pin rod 3 and the sleeve 4 are fixed in one semicircular pipe shell, and then the two semicircular pipe shells are welded and fixed.

As an embodiment of the present invention, the driving device includes a lever mechanism (not shown) and a transmission mechanism, one end of the transmission mechanism is connected to the lever mechanism, and the other end of the transmission mechanism is connected to the pin rod 3, and the lever mechanism drives the pin rod 3 to move in the sleeve 4 through the transmission mechanism. The transmission mechanism adopts a crank link mechanism as shown in fig. 7, the deflector rod mechanism adopts a vertical deflector rod fixedly connected with the rotating wheel 7-1, the top end of the deflector rod is provided with a toggle button or a knob, and the deflector rod is rotated through the toggle button or the knob to enable the pin rod 3 to stretch and retract.

As an alternative embodiment, as shown in fig. 2, 3 and 4, the damping mechanism is a torsion spring assembly 6 disposed in the head pipe 1, and the pin 3 extends out of the stand pipe and is adapted to the torsion spring assembly 6, and is constrained by the torsion spring assembly 6 to prevent the left and right rotation thereof. In this embodiment, the torsion spring assembly 6 includes a first torsion spring 6-1 and a second torsion spring 6-2, as shown in fig. 3, two torsion spring disposition grooves 17 are disposed in a cavity formed between the head pipe 1 and the vertical pipe 2, the two torsion spring disposition grooves 17 are symmetrically disposed on the upper and lower sides of the pin rod 3, the first torsion spring 6-1 and the second torsion spring 6-2 are respectively disposed in the two torsion spring disposition grooves 17, a rubber pad 18 is disposed on an inner side wall of the torsion spring disposition groove 17, and the rubber pad 18 is used for wrapping the torsion springs and providing a compression space for the deformation of the torsion springs. After the pin rod 3 extends out, left and right rotation can be respectively hindered by the two torsion springs, the torsion springs can be compressed under stress and can deform to a certain extent, and the rubber pads 18 provide space for deformation of the torsion springs. The torsional spring can avoid the sudden big-angle rotation of handlebar, leads to the balance car and the infant that are riding fast to fall down, but under the conscious circumstances, rotatory hard, still can realize turning to.

As shown in fig. 4 and 5, a gap 8 is provided between the pin 3 and the portion of the pin 3 that engages with the damping mechanism, and the damping mechanism does not interfere with the pin 3 within the gap 8. The gap 8 is matched with the pin rod 3, so that after the vertical pipe 2 extends out of the pin rod 3, the free steering angle of the vertical pipe 2 is 30 to 60 degrees. The free tip of first torsional spring 6-1 and the free tip of second torsional spring 6-2 form with pin 3 complex cooperation portion, and the free tip of two torsional springs has certain clearance 8, and this clearance 8 makes pin 3 stretches out the back, and riser 2 can be in the within range free rotation of 30-60 degrees, and this degree of freedom makes children more nimble when slotted hole balance car on the one hand, and it is also less to turn to the risk that takes place to fall down in the minizone, simultaneously, because the effect of clearance 8 for pin 3 can be free flexible in the within range in this clearance, avoids because the handlebar is in certain inclination, leads to pin 3 can't stretch out.

As another embodiment of the damping mechanism, as shown in fig. 6, it includes a spring damper 19 or a hydraulic damper (not shown) provided on the head pipe 1 or the vehicle frame 100. The vertical pipe 2 is internally provided with a matching part 9 matched with the pin rod 3, the matching part 9 is provided with a groove matched with the end part of the pin rod 3, the inner wall of the head pipe 1 is provided with a slide rail 11, and the matching part 9 is matched with the slide rail 11 and can slide along the inner wall of the head pipe 1. The left end and the right end of the matching part 9 are respectively fixedly connected with a pull wire 10, and the other ends of the two pull wires 10 are respectively wound around the vertical pipe 2 from different directions and are fixedly connected with the end part of a piston rod of the spring damper or the hydraulic damper. As shown in fig. 6, a spring damper 19 is employed in the present embodiment, and the spring damper 19 is provided in the cross member of the vehicle frame 100. A through hole 13 for the stay wire 10 to pass through is arranged at the joint of the head pipe 1 and the frame 100, and the stay wire 10 passes through the through hole 13 and is fixedly connected with the end part of the piston rod of the spring damper 19. A conduit 12 is arranged outside the pull wire 10. The line pipe 12 is fixed on the inner wall of the head pipe 1 and restrains the travel track of the stay wire 10.

After the pin rod 3 extends out, a gap is reserved between two side walls of a groove formed by the matching part 9 and the pin rod 3 in the matching part 9, and the gap enables the stand pipe 2 to rotate freely within the range of 30-60 degrees after the pin rod 3 extends out. Referring to fig. 6, when the handle bar 3 is in an extended state and the handle bar is turned right (clockwise in the figure) until the pin 3 contacts with the right edge of the matching portion 9, the matching portion 9 is moved right (clockwise in the figure) to pull the left pull wire 10, the left pull wire 10 is acted by the spring damper 19 to prevent the handle bar from turning right, so that the handle bar is subjected to a certain resistance to turning right; similarly, when the handle bar moves leftwards (counterclockwise in the figure) until the pin rod 3 contacts with the left edge of the matching part 9, the matching part 9 moves leftwards (counterclockwise in the figure), and then the pull wire 10 on the right side is pulled, and the pull wire 10 on the right side is acted by the spring damper 19 to block the handle bar from rotating leftwards, so that the handle bar is subjected to a certain resistance to rotating leftwards; in the above working principle, the handlebar can restrict the handlebar from rotating suddenly by a large margin under the action of the spring damper 19, and then the balance car is out of control to fall down, thereby increasing the safety performance of the balance car.

As an embodiment of the present invention, the steering mechanism further includes a speed measuring mechanism and a controller, the speed measuring mechanism is used for monitoring the speed of the balance car in real time, the speed measuring mechanism is a stopwatch, and includes a stopwatch body (not shown), an induction probe 15 and an induction magnet 16, the induction probe 15 shown in fig. 1 is fixed on the front fork, and the induction magnet 16 is fixedly arranged on the spoke of the front wheel. As another embodiment, the speed measuring mechanism can also adopt a GPS speed measurer.

The controller sets a speed threshold value which can be 4-10m/s, and the user can select and set the speed threshold value according to the self condition. The controller acquires the vehicle speed information monitored by the speed measuring mechanism, and when the vehicle speed is greater than the threshold set by the controller, the controller controls the driving device to act so as to extend the pin rod 3; in this embodiment, the driving device comprises a servo motor 5 and a transmission mechanism, and the controller controls the servo motor 5 to act. In this embodiment, the stem 2 or the handlebar is further provided with a position sensing device or an angle sensing device, the controller obtains information of the position sensing device or the angle sensing device, and when the information of the position sensing device or the angle sensing device detects that the deflection angle of the handlebar is smaller than a set value (for example, 30 to 60 degrees), and the vehicle speed is smaller than the threshold value, the controller controls the servo motor to operate, so that the pin 3 retracts. Similarly, under the working condition that the position sensing device or the angle sensing device detects the position or the deflection angle of the handlebar, the vehicle speed information monitored by the speed measuring mechanism is combined and jointly used as a necessary condition, and the controller sends an instruction to enable the pin rod to extend or retract, so that the intelligent bicycle is more intelligent.

As a further improvement of the present invention, the resistance strength of the damping mechanism can be adjusted, for example, the specifications of the first torsion spring 6-1 and the second torsion spring 6-2 are selected, or the resistance of the spring damper 19 or the resistance of the hydraulic damper is adjusted, so that the resistance condition of the handlebar rotation of the damping mechanism can be adjusted according to the requirement, so as to adapt to the individual requirement. If a servo motor is used as a driving mechanism, the servo motor is controlled by a controller, and under the condition that a speed measuring mechanism and a position sensing device or an angle sensing device provide book information to control the pin rod to stretch out and draw back, the controller can also be provided with a forced key, the servo motor is closed by a forced case, the pin rod is always in a retraction state, so that the damping mechanism completely fails, the whole balance car is in a state without limiting free steering, and similarly, the corresponding forced key can be arranged to extend or retract the pin rod, and the balance car is in a corresponding state.

As a further improvement of the invention, the vehicle balancing system further comprises a balancing vehicle acceleration sensing device, the controller acquires information of the acceleration sensing device and sets a corresponding threshold value, and when the acceleration value of the vehicle measured by the acceleration sensing device is greater than the corresponding threshold value, the controller controls the servo motor to act to extend the pin rod 3, so that the safety coefficient of the balancing vehicle is increased.

Claims

1. The utility model provides a children's balance car steering mechanism, its includes the head tube of frame and the riser of front fork, the riser suit is in the head tube, its characterized in that: a telescopic pin rod and a driving device for driving the pin rod to stretch and retract are arranged in the vertical pipe, a damping mechanism for limiting the vertical pipe to rotate is arranged in the head pipe, and the pin rod extends out of the vertical pipe and is matched with the damping mechanism to limit the rotation of the vertical pipe;

the speed measuring mechanism is used for monitoring the speed of the balance car in real time, the controller obtains the speed information monitored by the speed measuring mechanism, and when the speed is larger than a threshold value set by the controller, the controller controls the driving device to act to enable the pin rod to extend out;

the damping mechanism is a torsion spring assembly arranged in the head pipe, the pin rod extends out of the vertical pipe and is matched with the torsion spring assembly, and the pin rod is restrained by the torsion spring assembly to enable the pin rod to rotate left and right to be blocked; or

The damping mechanism is a spring damper or a hydraulic damper arranged on the head pipe or the frame, a matching part matched with the pin rod is arranged in the vertical pipe, the left end and the right end of the matching part are respectively fixedly connected with a stay wire, and the other ends of the stay wires are respectively wound around the vertical pipe from different directions and are fixedly connected with the end part of a piston rod of the spring damper or the hydraulic damper.

2. The steering mechanism of the children's balance car of claim 1, wherein: the vertical pipe is internally and fixedly provided with a sleeve for installing the pin rod, the driving device drives the pin rod to slide along the sleeve, a sliding groove is formed in the sleeve, and the pin rod is connected with the driving device through the sliding groove.

3. The steering mechanism of the children's balance car of claim 2, wherein: the driving device comprises a servo motor and a transmission mechanism, one end of the transmission mechanism is connected with the servo motor, the other end of the transmission mechanism is connected with the pin rod, and the servo motor drives the pin rod to move in the sleeve through the transmission mechanism.

4. The steering mechanism of the children's balance car of claim 2, wherein: the driving device comprises a shifting lever mechanism and a transmission mechanism, one end of the transmission mechanism is connected with the shifting lever mechanism, the other end of the transmission mechanism is connected with the pin rod, and the shifting lever mechanism drives the pin rod to move in the sleeve through the transmission mechanism.

5. The steering mechanism of the children's balance car of claim 1, wherein: a gap is formed between the matching part of the damping mechanism and the pin rod, and the damping mechanism does not generate an obstruction effect within the gap range.

6. The steering mechanism of the children's balance car of claim 5, wherein: the clearance is matched with the pin rod, so that the free steering angle of the vertical pipe is 30 to 60 degrees after the vertical pipe extends out of the pin rod.

7. The steering mechanism of the children's balance car of claim 1, wherein: the spring damper or the hydraulic damper is arranged on the frame, and the pull wire penetrates through the head pipe and is connected with the spring damper or the hydraulic damper.

8. The utility model provides a children's balance car which characterized in that: comprising a children's balance car steering mechanism according to any of claims 1-7.