A front wheel structure of a scooter and a scooter

Abstract

The application relates to a front wheel structure of a scooter and the scooter. The front wheel structure comprises a protection shell and a steering rod, the lower end of the steering rod is hinged in the protection shell, a fixed plate is fixed on the steering rod, the lower end of the protection shell is fixed with a front wheel frame, left and right sides of the front wheel frame are provided with a left front wheel and a right front wheel, the inner sides of the left front wheel and the right front wheel are provided with lower control pieces, the lower control pieces are hinged with the front wheel frame, upper control pieces are arranged above the lower control pieces; a pushing unit is arranged on the fixed plate, the pushing unit comprises first swing rods and second swing rods, the upper ends of the first swing rods and the second swing rods are hinged, the hinge points of the upper ends of the first swing rods and the second swing rods are slidably connected with the fixed plate, the tail ends of the first swing rods are provided with push rods, the push rods are slidably connected with the protection shell, and the push rods are hinged with the upper control pieces. The application has novel conception, ingenious structure and strong practicability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of children's scooters, in particular to a front wheel structure of a scooter and a scooter. BACKGROUND

[0002] A scooter with an overweight alarm function, application number CN202011639985.4, discloses a scooter, which is provided with a longitudinal rod installed on a set of planetary gear trains, two sets of incomplete gears and a rack structure installed below the planetary gear trains, and the longitudinal rod drives the planetary gear trains to work and drives the corresponding rack on one side to move by rotating the longitudinal rod, so as to change the inclination angles of the two front wheels, and finally realize different inclination angles of the two front wheels to achieve the purpose of convenient steering.

[0003] This steering structure has the following disadvantages: 1. The use of planetary gear trains requires high installation precision of the gears, which makes the production and assembly efficiency low; 2. The use of planetary gear trains requires the installation of racks on both sides, which makes the overall front-to-back dimension thick and heavy, affecting the overall appearance of the scooter. SUMMARY

[0004] In view of the above situation, in order to solve the problems existing in the prior art, the purpose of the present application is to provide a front wheel structure of a scooter and a scooter, which solves the problems of high installation precision requirement, low assembly efficiency, large size and unattractive appearance in the prior art.

[0005] The technical solution solved is: the front wheel structure comprises a protection shell and a steering rod, the lower end of the steering rod is located in the protection shell and is hinged to the bottom of the protection shell, a fixed plate is fixedly installed on the steering rod in the protection shell, the lower end of the protection shell is fixedly connected with a front wheel frame, a left front wheel and a right front wheel are respectively installed on the left and right sides of the front wheel frame, a lower control piece is rotatably installed on the inner side of each of the left front wheel and the right front wheel, the lower control piece is hinged to the front wheel frame, and an upper control piece that can move up and down is installed above the lower control piece.

[0006] A set of push units is installed on the fixed plate on the left and right sides of the steering rod, each set of push units comprises a first swing rod and a second swing rod, the first swing rod and the second swing rod are equal in length, the first swing rod is located on the outer side of the second swing rod, the first swing rod and the second swing rod are hinged at the upper end, the hinge points of the upper ends of the first swing rod and the second swing rod are slidingly connected with the fixed plate, a horizontal push rod is hinged to the end of each first swing rod, the push rod is slidingly connected with the protection shell, and the push rod is hinged to the upper control piece on the corresponding side.

[0007] Preferably, the upper part of the protective shell is provided with a horizontal slot, the steering rod penetrates the slot, the bottom surface of the protective shell is provided with an upward protrusion, the steering rod is provided with a groove matched with the protrusion, the protrusion is provided with a front-to-back steering shaft, and the steering shaft is connected with the steering rod through a bearing.

[0008] Preferably, the upper control piece is connected with the lower control piece through a telescopic rod, the lower end of the telescopic rod is fixed on the lower control piece, the upper end of the telescopic rod is fixed on the upper control piece, a damping spring is sleeved on the outer side of the telescopic rod, the upper end of the damping spring is fixed on the upper control piece, and the lower end of the damping spring is fixed on the lower control piece.

[0009] Preferably, the fixing plate is provided with two horizontal guide grooves, the two guide grooves are symmetrical about the steering rod, the first swing rod and the second swing rod are provided with guide blocks in the guide grooves at the hinge points, and the guide blocks can slide along the guide grooves.

[0010] Preferably, the protective shell is provided with horizontal sliding grooves, the sliding grooves are arranged on the left and right sides of the steering rod, the sliding grooves are arranged along the left-right direction, the push rod is arranged in the corresponding sliding groove, the bottom of the sliding groove is provided with a horizontal T-shaped groove, the bottom of the push rod is provided with a T-shaped block arranged in the T-shaped groove, and the T-shaped block can slide in the T-shaped groove.

[0011] Preferably, a fixed frame is arranged in the protective shell, the fixed frame is arranged below the fixing plate, the fixed frame is provided with guide grooves penetrating the top surface of the fixed frame, the upper end of the steering rod penetrates the guide grooves and is arranged above the protective shell, the front and rear sides of the fixed frame are provided with clamping grooves, and the steering rod is provided with spring clamps matched with the clamping grooves.

[0012] Preferably, the spring clamps arranged in the positioning blind holes comprise positioning pins, positioning blind holes and springs, the positioning blind holes are arranged on the steering rod in the fixed frame, the axis of the positioning blind hole is perpendicular to the axis of the steering rod, the positioning blind hole is arranged with a positioning pin which can move in and out along the axis of the positioning blind hole, the spring is arranged between the positioning pin and the positioning blind hole, one end of the spring is fixed on the positioning pin, the other end of the spring is fixed on the bottom of the positioning blind hole, the outer side of the positioning pin is provided with a hemispherical shape, and the axis of the clamping groove is coaxial with the axis of the positioning pin.

[0013] Preferably, the scooter comprises a pedal, a rear wheel, a handle support and a handle; wherein the head of the pedal is mounted with the protection shell of the front wheel mechanism, the tail of the pedal is mounted with the rear wheel, the handle support is mounted on the steering rod, and the handle is mounted on the handle support.

[0014] The present application has the advantages of novel concept, ingenious structure, strong practicability, smooth steering of the scooter, optimized structure, reduced limitation on installation precision, greatly improved assembly efficiency, reduced size, and light, beautiful and elegant scooter. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The assembly drawing of the scooter.

[0016] Figure 2 The structure diagram of the pushing unit.

[0017] Figure 3 The bottom view of the pushing unit.

[0018] Figure 4 The structure diagram of the upper control piece and the lower control piece.

[0019] Figure 5 The structure diagram of the spring chuck.

[0020] Figure 6 The initial state diagram of the swing rod.

[0021] Figure 7 The right rotation state diagram of the swing rod.

[0022] Figure 8 The sectional view of the connection between the upper control piece and the lower control piece.

[0023] Figure 9 The sectional view of the connection between the steering rod and the fixed frame.

[0024] Figure 10 The sectional view of the connection between the steering rod and the fixed frame. Figure 9 The local enlarged view of A in the present application.

[0025] Wherein, 1, protective shell; 2, steering rod; 3, fixed plate; 4, front wheel frame; 5, left front wheel; 6, right front wheel; 7, lower control piece; 8, upper control piece; 901, first right swing rod; 902, first left swing rod; 1001, second right swing rod; 1002, second left swing rod; 10, second swing rod; 1101, right push rod; 1102, left push rod; 12, let go of the slot; 13, telescopic rod; 14, shock spring; 15, guide slot; 16, sliding slot; 17, fixed frame; 18, guide slot; 19, clamping groove; 20, spring chuck; 21, pedal; 22, rear wheel; 23, handle support; 24, handle; 25, positioning pin; 26, positioning blind hole; 27, steering shaft. DETAILED DESCRIPTION

[0026] The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings.

[0027] By Figures 1 to 10 The front wheel mechanism of the present application comprises a protective shell 1 and a steering rod 2, the lower end of the steering rod 2 is located in the protective shell 1 and is hinged to the bottom of the protective shell 1, a fixed plate 3 is fixedly installed on the steering rod 2 in the protective shell 1, a front wheel frame 4 is fixedly installed at the lower end of the protective shell 1, a left front wheel 5 and a right front wheel 6 are respectively installed on the left and right sides of the front wheel frame 4, a lower control piece 7 is rotatably installed on the inner side of the left front wheel 5 and the right front wheel 6, the lower control piece 7 is hinged to the front wheel frame 4, and an upper control piece 8 that can move up and down is installed above the lower control piece 7.

[0028] A set of push units is installed on each of the fixed plates 3 on the left and right sides of the steering rod 2, each set of push units comprises a first swing rod and a second swing rod, the length of the first swing rod is equal to that of the second swing rod, the first swing rod is located on the outer side of the second swing rod, the upper ends of the first swing rod and the second swing rod are hinged, and the hinge points of the upper ends of the first swing rod and the second swing rod are slidingly connected to the fixed plate 3, the end of each first swing rod is hinged to a horizontal push rod, the push rod is slidingly connected to the protective shell 1, and the push rod is hinged to the corresponding side of the upper control piece 8.

[0029] In order to realize the smooth rotation of the steering rod 2, a horizontal let go slot 12 is formed on the upper side of the protective shell 1, the steering rod 2 penetrates the let go slot 12, an upward protrusion is arranged on the bottom surface of the protective shell 1, a recess is formed on the steering rod 2 and matches the protrusion, a steering shaft 27 in the front-rear direction is installed on the protrusion, and the steering shaft 27 is connected to the steering rod 2 through a bearing.

[0030] In order to realize the up and down movement of the upper control piece 8, the upper control piece 8 is connected with the lower control piece 7 through the telescopic rod 13, the lower end of the telescopic rod 13 is fixed on the lower control piece 7, the upper end of the telescopic rod 13 is fixed on the upper control piece 8, the telescopic rod 13 is sleeved with the damping spring 14 outside, the upper end of the damping spring 14 is fixed on the upper control piece 8, and the lower end of the damping spring 14 is fixed on the lower control piece 7. In the embodiment, the upper end of the telescopic rod 13 is inserted into the lower end of the telescopic rod 13, and the upper end of the telescopic rod 13 is in telescopic sliding fit with the lower end of the telescopic rod 13.

[0031] In order to realize the sliding of the hinge points of the upper ends of the first swing rod and the second swing rod along the fixed plate 3, two horizontal guide grooves 15 are formed in the fixed plate 3, the two guide grooves 15 are symmetrical about the steering rod 2, the hinge points of the first swing rod and the second swing rod are provided with guide blocks in the guide grooves 15, and the guide blocks can slide along the guide grooves 15. That is, the first swing rod and the second swing rod are hinged with the guide blocks respectively.

[0032] For example, when the fixed plate 3 rotates with the steering rod 2 along the hinge point of the steering rod 2 and the protective shell 1 to the left, the fixed plate 3 on the left side of the steering rod 2 rotates downward, and the fixed plate 3 on the right side of the steering rod 2 rotates downward. When rotating, the fixed plate 3 will press the hinge points of the first swing rod on the left and the second swing rod on the left to move downward, and the guide blocks at the hinge points of the first swing rod on the left and the second swing rod on the left will slide along the guide grooves 15. When rotating, the fixed plate 3 will lift the hinge points of the first swing rod on the right and the second swing rod on the right to move upward, and the guide blocks at the hinge points of the first swing rod on the right and the second swing rod on the right will slide along the guide grooves 15. In this way, the hinge points of the upper ends of the first swing rod and the second swing rod can slide along the fixed plate 3. In order to realize the left and right movement of the push rod along the protective shell 1, a horizontal sliding groove 16 is formed in the protective shell 1, the sliding groove 16 is provided in two, the sliding grooves 16 are respectively located on the left and right sides of the steering rod 2 and are symmetrical about the steering rod 2, the sliding grooves 16 are arranged in the left and right directions, the push rod is located in the sliding groove 16 on the corresponding side, and the bottom of the sliding groove 16 is provided with a horizontal T-shaped groove, and the bottom of the push rod is provided with a T-shaped block located in the T-shaped groove. Through the cooperation of the T-shaped groove and the T-shaped block, the push rod can move along the protective shell 1.

[0033] In order to realize that the steering rod 2 can be fixed in the vertical position when the steering is not needed, a fixing frame 17 is installed in the protection shell 1, which is below the fixing plate 3, a guide groove 18 is opened on the top surface of the fixing frame 17, the upper end of the steering rod 2 penetrates the guide groove 18 and is above the protection shell 1, the front and rear sides of the fixing frame 17 are provided with clamping grooves 19, the steering rod 2 is provided with spring clamping heads 20 corresponding to the clamping grooves 19, when the steering rod 2 is in the vertical position, the spring clamping heads 20 are located in the clamping grooves 19, and the position of the steering rod 2 is fixed.

[0034] When the steering rod 2 is in the vertical position, the steering rod 2 can be fixed by the clamping grooves 19 and the spring clamping heads 20. When force is applied to the steering rod 2, the spring clamping heads 20 can be turned out of the clamping grooves 19, and the steering rod 2 is in a free state.

[0035] The spring clamping head 20 includes a positioning pin 25 and a spring. The positioning blind hole 26 is opened on the steering rod 2 in the fixing frame 17, the axis of the positioning blind hole 26 is perpendicular to the axis of the steering rod 2, the positioning pin 25 can move in and out along the axis of the positioning blind hole 26, the spring is installed between the positioning pin 25 and the positioning blind hole 26, one end of the spring is fixed on the positioning pin 25, the other end of the spring is fixed on the bottom of the positioning blind hole 26, the outer side of the positioning pin 25 is hemispherical, and the axis of the clamping groove 19 is coaxial with the axis of the positioning pin 25. When the steering rod 2 is in the vertical state, the positioning pin 25 is located in the corresponding clamping groove 19, when force is applied to the steering rod 2, the steering rod 2 applies force to the positioning pin 25, so that the positioning pin 25 has a tendency to rotate with the steering rod 2, at the same time, the side wall of the clamping groove 19 will extrude the positioning pin 25, so that the positioning pin 25 moves away from the clamping groove 19, so that the positioning pin 25 is separated from the clamping groove 19, and the steering rod 2 is loosened, and the steering rod 2 can rotate.

[0036] The scooter includes a pedal 21, a rear wheel 22, a handle support 23 and a handle 24, wherein the head of the pedal 21 is installed with the protection shell 1 of the front wheel mechanism, the tail of the pedal 21 is installed with the rear wheel 22, the handle support 23 is installed on the steering rod 2, and the handle 24 is installed on the handle support 23.

[0037] When the device is not turning, the spring clamping head 20 is clamped in the clamping groove 19 in the fixed frame 17, the steering lever 2 is in a vertical state, the left and right fixed plates 3 are horizontal, and the left and right pushing units and push rods are symmetrical relative to the steering lever 2.

[0038] When driving straight, both hands hold the handlebars 24, one foot is on the footboard 21, and the other foot continuously pushes the ground to move the scooter forward.

[0039] As shown in Figure 2 , Figure 3 , Figure 6 , Figure 7 , the pushing process of the pushing units on both sides of the steering lever 2 is described in detail. For ease of description, the first and second swing levers on the right side of the steering lever 2 are named first right swing lever 901 and second right swing lever 1001. The first and second swing levers on the left side of the steering lever 2 are named first left swing lever 902 and second left swing lever 1002, and the push rod on the right side is named right push rod 1101. The push rod on the left side is named left push rod 1102. For ease of understanding, the left and right sides described below are the left and right sides during use.

[0040] When turning to the right, the steering lever 2 is pushed to the right, the spring clamping head 20 at the bottom is separated from the clamping groove 19, the steering lever 2 drives the fixed plate 3 to rotate to the right around the lower hinge point, the fixed plate 3 rotates downward to the right, which makes the fixed plate 3 lower on the right and higher on the left, and the right side of the fixed plate 3 presses the hinge points of the first right swing lever 901 and the second right swing lever 1001 downward, which makes the hinge points of the first right swing lever 901 and the second right swing lever 1001 shift downward, the angle between the first right swing lever 901 and the second right swing lever 1001 increases, and the angle between the first right swing lever 901 and the horizontal plane decreases, which drives the right push rod 1101 to move to the right through the second right swing lever 1001.

[0041] The distance that the second right swing lever 1001 pushes the right push rod 1101 to move to the right is:

[0042] The initial state, the length of the first right swing lever 901, the second right swing lever 1001, the first left swing lever 902 and the second left swing lever 1002 is equal, and is L. The acute angle between the first right swing lever 901 and the horizontal plane is A1, and the acute angle between the second right swing lever 1001 and the horizontal plane is A2. After the steering lever 2 rotates to the right, the acute angle between the first right swing lever 901 and the horizontal plane is B1, and the acute angle between the second right swing lever 1001 and the horizontal plane is B2. Since the length of the first right swing lever 901 and the second right swing lever 1001 is equal, the angle between the two and the horizontal plane is equal before and after the hinge point of the first right swing lever 901 and the second right swing lever 1001 moves, that is, A1=A2, B1=B2. Now let A1=A2=M, B1=B2=N, then the distance of the right push rod 1101 moving to the right is:

[0043] X=2*L*(cosN-cosM).

[0044] The right push rod 1101 pushes the right upper control piece 8 to move to the right. Since the telescopic rod 13 is installed between the upper control piece 8 and the lower control piece 7, the telescopic rod 13 will not hinder the horizontal movement of the upper control piece 8, so that the right front wheel 6 tilts to the right.

[0045] Similarly, when the steering lever 2 rotates to the right around the hinge point of the steering lever 2 and the protective shell 1, it drives the fixed plate 3 to rotate downward to a certain angle, which will make the fixed plate 3 on the left side of the steering lever 2 tilt upward, the hinge point of the first left swing lever 902 and the second left swing lever 1002 is pulled upward, which reduces the angle between the first left swing lever 902 and the second left swing lever 1002, increases the acute angle between the first left swing lever 902 and the horizontal plane, and the acute angle between the second left swing lever 1002 and the horizontal plane, and the second left swing lever 1002 pulls the left push rod 1102 to move to the right.

[0046] The calculation method of the distance of the left push rod 1102 moving to the left is: the initial state, the acute angle between the first left swing lever 902 and the horizontal plane is A3, and the acute angle between the second left swing lever 1002 and the horizontal plane is A4. After the steering lever 2 rotates to the right, the acute angle between the first left swing lever 902 and the horizontal plane is B3, and the acute angle between the second left swing lever 1002 and the horizontal plane is B4. Since the length of the first right swing lever 901 and the second right swing lever 1001 is equal, the angle between the two and the horizontal plane is equal before and after the hinge point of the first right swing lever 901 and the second right swing lever 1001 moves, that is, A3=A4, B3=B4.

[0047] Because of the initial state, the second swing rods on the left and right sides are symmetrical about the steering rod 2 with respect to the left and right. Therefore, the angle between the second left swing rod 1002 and the horizontal plane and the angle between the first left swing rod 902 and the horizontal plane are still M, that is, A3=A4=M. After the steering rod 2 is turned to the right, the angles between the first left swing rod 902 and the second left swing rod 1002 and between the first right swing rod 901 and the second right swing rod 1001 change in different trends, and B1, B2 are not equal to B3, B4. It is assumed that B3=B4=P.

[0048] Therefore, the distance by which the left push rod 1102 moves to the right is:

[0049] Y=2*L*(cosM-cosP)

[0050] The second left swing rod 1002 drives the hinged point of the first left swing rod 902 and the second left swing rod 1002 to slide to the right, which pulls the left push rod 1102 to move to the right, and the left push rod 1102 pulls the left front wheel to tilt to the right. Similarly, because the telescopic rod 13 is installed between the upper control sheet 8 and the lower control sheet 7, the telescopic rod 13 does not interfere with the movement of the upper control sheet 8, so that the left front wheel 5 tilts to the right.

[0051] wherein the ratio of the distances by which the left and right push rods move to the right is:

[0052] Y / X=(cosM-cosP) / (cosN-cosM)

[0053] that is, Y / X=(-1)*(cosM-cosP) / (cosM-cosN)

[0054] Because the angle N is reduced on the basis of M, and the angle P is increased on the basis of M, the value of N is smaller than that of P, so the value of cosN is greater than that of cosP, that is, the value of (-1)*cosN is smaller than that of (-1)*cosP; therefore, the absolute value of (cosM-cosP) is greater than that of (cosM-cosN), and (cosM-cosN) is less than 0, so the value of (cosM-cosP) / (cosM-cosN) is less than -1, and because Y / X=(-1)*(cosM-cosP) / (cosM-cosN), the value of Y / X is greater than 1.

[0055] As described above, the inclination angle of the left front wheel 5 is greater than that of the right front wheel 6, and the friction of the right front wheel 6 is greater, so that the left front wheel 5 is more easily rotated, thereby achieving the effect of turning to the right.

[0056] Similarly, when a left turn is needed, the steering rod 2 is pushed to the left, the steering rod 2 drives the fixed plate 3 to rotate to the left around the hinge point of the steering rod 2 and the protective shell 1, the fixed plate 3 rotates downward to the left, which makes the fixed plate 3 low on the left and high on the right, and the hinge point of the first left swing rod 902 and the second left swing rod 1002 on the left side of the fixed plate 3 is pressed downward, so that the hinge point of the first left swing rod 902 and the second left swing rod 1002 is offset downward, and the angle between the first left swing rod 902 and the second left swing rod 1002 on the left side is increased, so that the acute angle between the first left swing rod 902, the second left swing rod 1002 and the horizontal plane is increased;

[0057] At the same time, the steering rod 2 drives the fixed plate 3 to rotate downward to the left by a certain angle, which makes the fixed plate 3 on the right side of the steering rod 2 tilt upward, the hinge point of the first right swing rod 901 and the second right swing rod 1001 is pulled upward, the included angle between the first right swing rod 901 and the second right swing rod 1001 is reduced, and the acute angle between the first right swing rod 901, the second right swing rod 1001 and the horizontal plane is increased;

[0058] The distance that the right push rod 1101 moves to the left is greater than the distance that the left push rod 1102 moves to the left;

[0059] Therefore, the inclination angle of the right front wheel 6 is greater than that of the left front wheel 5, and the friction of the left front wheel 5 is greater, so that the right front wheel 6 is more easily rotated, and the effect of turning to the left is achieved.

[0060] As shown in Figure 6 and Figure 7 N1 is the initial position of the horizontal direction of the hinge end of the left front wheel 5 and the left push rod 1102; N2 is the position of the horizontal direction of the hinge end of the left front wheel 5 and the left push rod 1102 after the change when the scooter turns to the right. N3 is the initial position of the horizontal direction of the hinge end of the right front wheel 6 and the right push rod 1101; N4 is the position of the horizontal direction of the hinge end of the right front wheel 6 and the right push rod 1101 after the change when the scooter turns to the right. The horizontal distance between N1 and N2 is greater than the horizontal distance between N3 and N4, so that the sliding distance of the left push rod 1102 is greater than the sliding distance of the right push rod 1101, and the inclination angle of the left front wheel 5 is greater than the deflection angle of the right front wheel 6. Therefore, the friction between the right front wheel 6 and the ground is greater, and the left front wheel 5 is more easily rotated, and the effect of turning to the right is achieved.

[0061] The application sets left and right groups of pushing units, when turning, only need to turn the steering lever 2, the steering lever 2 rotates to make the fixed plate 3 on the side consistent with the rotating direction of the steering lever 2 to incline downward, the fixed plate 3 on the side opposite to the rotating direction to incline upward, then extrude the hinged points of the first swing lever and the second swing lever on the same side as the rotating direction to make the hinged points lower, at the same time, the push rod on the same side as the rotating direction pushes the wheel on the same side to incline, pull the hinged points of the first swing lever and the second swing lever on the side opposite to the rotating direction to make the hinged points higher, at the same time, the push rod on the side opposite to the rotating direction pushes the wheel on the same side to incline, so as to realize the steering of the left front wheel 5 and the right front wheel 6, and through the hinge of the steering lever 2, only need to turn the steering lever 2 on the corresponding side when turning, so as to realize the smooth steering, the operation method is simple and easy to use.

[0062] The application sets the steering lever 2, the fixed plate 3 and the left and right symmetrical pushing units, when rotating the steering lever 2, the fixed plate 3 follows the rotation, when turning right, the fixed plate 3 rotates to the inclined direction to make the included angle between the right first swing lever and the right second swing lever increase, make the included angle between the left first swing lever and the left second swing lever decrease, so as to make the pushing rods on the left and right sides move different distances to the right, the distance of the pushing rod on the left to the right is greater than that of the pushing rod on the right, so as to make the inclination of the left front wheel 5 greater, so as to be more convenient to turn.

[0063] The application sets the left and right groups of pushing units, the two pushing rods and the corresponding wheels are hinged, through the hinged structure, the requirement for the installation precision is reduced, the assembly efficiency in the production process can be improved, and the later maintenance is facilitated.

[0064] The application sets the pushing units and the pushing rods, so as to realize the steering of the scooter through fewer parts, not only saves the cost, but also can reduce the volume of the front steering structure, so as to make the whole scooter more agile and beautiful.

[0065] The application has novel concept, ingenious structure and strong practicability, can realize the smooth steering of the scooter, optimizes the structure, reduces the limitation on the installation precision, can greatly improve the assembly efficiency, reduces the volume, can make the scooter more light and beautiful, and can make the steering more easy.

Claims

1. A front wheel structure of a scooter, characterized by, The front wheel structure comprises a protection shell (1) and a steering rod (2), the lower end of the steering rod (2) is located in the protection shell (1) and is hinged to the bottom of the protection shell (1), a fixed plate (3) is fixedly installed on the steering rod (2) in the protection shell (1), the lower end of the protection shell (1) is fixed with a front wheel frame (4), the left and right sides of the front wheel frame (4) are respectively provided with a left front wheel (5) and a right front wheel (6), the inner sides of the left front wheel (5) and the right front wheel (6) are rotatably provided with a lower control piece (7), the lower control piece (7) is hinged to the front wheel frame (4), and an upper control piece (8) that can move up and down is installed above the lower control piece (7). A group of pushing units are installed on the fixed plates (3) on the left and right sides of the steering rod (2), each group of the pushing units comprises a first swing rod and a second swing rod, the lengths of the first swing rod and the second swing rod are equal, the first swing rod is located on the outer side of the second swing rod, the upper ends of the first swing rod and the second swing rod are hinged, the hinge points of the upper ends of the first swing rod and the second swing rod are slidably connected to the fixed plates, the ends of each first swing rod are hinged with a horizontal push rod, the push rod is slidably connected to the protection shell (1), and the push rod is hinged to the upper control piece (8) on the corresponding side.

2. A front wheel structure of a scooter according to claim 1, characterized in that, A horizontal accommodation groove (12) is formed in the upper side of the protection shell (1), the steering rod (2) penetrates through the accommodation groove (12), the bottom surface of the protection shell (1) is provided with an upward protrusion, a recess is formed in the steering rod (2) and matched with the protrusion, a front-to-back steering shaft (27) is installed on the protrusion, and the steering shaft (27) is connected to the steering rod (2) through a bearing.

3. The front wheel structure of the scooter according to claim 1, wherein The upper control piece (8) and the lower control piece (7) are connected through a telescopic rod (13), the lower end of the telescopic rod (13) is fixed to the lower control piece (7), the upper end of the telescopic rod (13) is fixed to the upper control piece (8), a damping spring (14) is sleeved on the outer side of the telescopic rod (13), the upper end of the damping spring (14) is fixed to the upper control piece (8), and the lower end of the damping spring (14) is fixedly connected to the lower control piece (7).

4. The front wheel structure of the scooter according to claim 1, wherein Two horizontal guide grooves (15) are formed in the fixed plate (3), the two guide grooves (15) are symmetrical about the left and right sides of the steering rod (2), guide blocks located in the guide grooves (15) are installed at the hinge points of the first swing rod and the second swing rod, and the guide blocks can slide along the guide grooves (15).

5. The front wheel structure of a scooter according to claim 1, characterized in that, The protection shell (1) is provided with horizontal sliding grooves (16), the sliding grooves (16) are arranged on the left and right sides of the steering rod (2), the sliding grooves (16) are arranged in the left-right direction, the push rod is arranged in the corresponding sliding groove (16), the bottom of the sliding groove (16) is provided with a horizontal T-shaped groove, and the bottom of the push rod is provided with a T-shaped block arranged in the T-shaped groove and capable of sliding in the T-shaped groove.

6. The front wheel structure of a scooter according to claim 1, characterized in that, The protection shell (1) is provided with a fixed frame (17), the fixed frame (17) is arranged below the fixed plate (3), the fixed frame (17) is provided with a guide groove (18) penetrating through the top surface of the fixed frame (17), the upper end of the steering rod (2) penetrates through the guide groove (18) and is arranged above the protection shell (1), the front and rear sides of the fixed frame (17) are provided with clamping grooves (19), and the steering rod (2) is provided with spring clamping heads (20) corresponding to the clamping grooves (19).

7. A front wheel structure of a scooter according to claim 6, characterized in that, The spring clamping head (20) arranged in the positioning blind hole (26) comprises a positioning pin (25) and a spring, the positioning blind hole (26) is arranged in the steering rod (2) arranged in the fixed frame (17), the axis of the positioning blind hole (26) is perpendicular to the axis of the steering rod (2), the positioning blind hole (26) is provided with the positioning pin (25) capable of moving in and out along the axis of the positioning blind hole (26), the spring is arranged between the positioning pin (25) and the positioning blind hole (26), one end of the spring is fixed on the positioning pin (25), the other end of the spring is fixed on the bottom of the positioning blind hole (26), and the outer side of the positioning pin (25) is in a semispherical shape.

8. Scooter, characterized in that The scooter comprises a pedal (21), a rear wheel (22), a handle support (23), a handle (24) and the front wheel mechanism of any one of claims 1-7, wherein the head of the pedal (21) is arranged in the protection shell (1) of the front wheel mechanism, the tail of the pedal (21) is arranged in the rear wheel (22), the handle support (23) is arranged on the steering rod (2), and the handle (24) is arranged on the handle support (23).

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