Electric four-wheeled vehicle and operating method thereof

Abstract

The present invention relates to an electric four-wheeled vehicle and an operating method thereof, comprising a pedal, a power supply installed in the pedal, a hand-operated lever installed at the top of the pedal, and a front wheel assembly and a rear wheel assembly installed at the front and rear ends of the pedal. Mounting frames are fixed to the front and rear ends of the pedal, and the front wheel assembly and the rear wheel assembly are respectively connected to the mounting frames via a steering mechanism, and the steering mechanism includes a steering frame, a connecting rod, and a swing frame. The electric four-wheeled vehicle and the operating method thereof have an automatic braking function and can be quickly unlocked by coordinating a specially designed steering frame with a connecting rod, a swing frame, a mounting frame and other structures. At the same time, the wheels can be turned left or right by simply controlling the pressure on both sides of the pedal. The overall steering structure is simple and easy to assemble. When turning, the wheels have a certain inclination angle with the ground, ensuring the stability and effectiveness of the steering of the electric four-wheeled vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of electric four-wheeled vehicles, and in particular to an electric four-wheeled vehicle and an operating method thereof. Background Art

[0002] With the rapid development of electric vehicle technology, the types of electric four-wheel vehicles are gradually increasing, and the steering structures of electric vehicles are also increasing.

[0003] However, the wheels of existing electric four-wheeled vehicles generally adopt a symmetrical parallel structure. When stationary, the wheels are parallel to the central axis of the electric four-wheeled vehicle in the length direction. If the ground is uneven, the electric four-wheeled vehicle will automatically slide, and a related brake mechanism needs to be designed to prevent it from automatically sliding, resulting in a complex structure and inconvenient operation of such electric four-wheeled vehicles. At the same time, such electric four-wheeled vehicles all achieve wheel steering by controlling the direction of the handlebars and a series of complex connecting rod structures. Such steering mechanisms have a complex structure, are inconvenient to assemble, and are not flexible when steering. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides an electric four-wheeled vehicle with a simple structure, convenient operation, flexible and stable steering, and an operating method thereof.

[0005] The present invention is achieved through the following technical solutions:

[0006] An electric four-wheeled vehicle comprises a pedal, a power source installed in the pedal, a hand-controlled lever installed at the top of the pedal, and a front wheel assembly and a rear wheel assembly installed at the front and rear ends of the pedal, wherein mounting frames are fixed to the front and rear ends of the pedal respectively, and the front wheel assembly and the rear wheel assembly are connected to the mounting frames respectively through a steering mechanism, and the front wheel assembly and the rear wheel assembly are deflected outward and tilted with respect to the central axis in the length direction of the pedal, and the steering mechanism comprises a bogie, a connecting rod and a swing frame, the bogie is fixed to the center of the inner side of the front wheel assembly or the rear wheel assembly, a first ball head rod is fixed to the side of the bogie, and a second ball head rod is fixed to the side of the mounting frame. The connecting rod is inclined with the horizontal plane, the bottom end of the connecting rod is rotatably connected to the first ball head rod through the first steering knuckle, and the top end of the connecting rod is rotatably connected to the second ball head rod through the second steering knuckle. The first steering knuckle and the second steering knuckle can respectively rotate around the first ball head rod and the second ball head rod. A group of swing frames are respectively fixed on the left and right sides of the mounting frame, and the third ball head rod is respectively fixed on the top and bottom ends of the steering frame. One end of the swing frame is rotatably connected to the mounting frame through a rotating shaft and can swing up and down, and the other end of the swing frame away from the mounting frame is rotatably connected to the third ball head rod through the third steering knuckle, and the third steering knuckle can rotate around the third ball head rod.

[0007] In order to further ensure the effectiveness of four-wheel deflection and steering, in a preferred embodiment of the present invention, the bogie is a rectangular structure, the top end surface and the bottom end surface of which the third ball head rod is installed are tilted downward, and the outer end surface of which the first ball head rod is installed is tilted upward.

[0008] In order to facilitate the adjustment of steering and tilt angles, the outer end face of the bogie has a plurality of adjustment holes arranged in sequence from top to bottom, the first ball head rod is fixed in the adjustment hole, and the first ball head rod is always perpendicular to the central axis.

[0009] In order to further ensure the stability of steering, a shock absorber is provided in the mounting frame, and the shock absorber is elastically connected to the steering frame.

[0010] The present invention also provides an operating method of the electric four-wheeled vehicle, comprising the following steps:

[0011] (1) The operator stands on the pedal, which is forced to move downward, driving the inner side of each connecting rod to deflect downward and the outer side to deflect upward. The connecting rod drives the bogie to rotate axially. At the same time, the pedal drives each swing frame to flip upward, and the swing frame drives the bogie to deflect inward, thereby rotating the wheel. The wheel is perpendicular to the horizontal plane and parallel to the central axis of the pedal length direction, realizing four-wheel unlocking;

[0012] (2) When turning right is required, the operator stands on the pedal and the center of gravity tilts to the right, and the right side of the pedal deflects downward as a whole. Then, the top ends of the two front and rear connecting rods on the right side deflect downward, and the bottom ends of the two rear connecting rods on the right side deflect upward. At the same time, the front and rear two sets of swing frames on the right side both flip upward. Since the lever arm remains unchanged, the connecting rod pushes the right wheel assembly to rotate axially to the right through the bogie, and the swing frame pushes the right wheel assembly to tilt to the right as a whole through the bogie. On the contrary, the left side of the pedal deflects upward, then the top ends of the two left connecting rods deflect upward, and the bottom ends of the two left connecting rods deflect downward. The front and rear two sets of swing frames on the left side both flip downward. Since the lever arm remains unchanged, the connecting rod pushes the left wheel assembly to rotate axially to the right through the bogie, and the swing frame pushes the left wheel assembly to tilt to the right as a whole through the bogie, thereby realizing the wheel tilting right turn.

[0013] (3) Similarly, if the operator's center of gravity tilts to the left, the wheel can be tilted to the left.

[0014] The beneficial effects of the present invention are as follows: the electric four-wheeled vehicle and its operating method have an automatic braking function and can be quickly unlocked through the cooperation of a specially designed bogie with connecting rods, a swing frame, a mounting frame and other structures. At the same time, the wheels can be turned left or right by simply controlling the pressure on both sides of the pedals. The overall steering structure is simple and easy to assemble. When turning, the wheels have a certain inclination angle with the ground, which ensures the stability and effectiveness of the steering of the electric four-wheeled vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the three-dimensional structure of the electric four-wheeled vehicle of the present invention;

[0016] Figure 2 Schematic diagram of the structure of the steering mechanism of the electric four-wheeled vehicle of the present invention;

[0017] Figure 3 1 is a schematic top view of the front wheel assembly and the rear wheel assembly of the electric four-wheeled vehicle of the present invention when the vehicle is stationary;

[0018] Figure 4 The figure is a front view schematic diagram of the front wheel assembly and the rear wheel assembly of the electric four-wheeled vehicle of the present invention when the electric four-wheeled vehicle is stationary. DETAILED DESCRIPTION

[0019] The following detailed description of preferred embodiments of the present invention is provided in conjunction with the accompanying drawings to facilitate understanding of the advantages and features of the present invention by those skilled in the art, thereby providing a clearer and more precise definition of the scope of protection of the present invention. Directional terms used in the present invention, such as "up," "down," "front," "back," "left," "right," "top," and "bottom," are intended solely to refer to the directions of the accompanying drawings. Therefore, the directional terms used are intended to illustrate and facilitate understanding of the present invention and are not intended to limit the present invention.

[0020] like Figure 1 The electric four-wheeled vehicle shown includes a pedal 1, a power drive installed in the pedal 1, a hand-control lever 2 installed at the top of the pedal 1, and a front wheel assembly and a rear wheel assembly installed at the front and rear ends of the pedal 1. The pedal 1 is rectangular and has an integrated power drive inside to control the rotation of the front wheel assembly and the rear wheel assembly. The hand-control lever 2 is vertically fixed to one end of the pedal 1. A handbrake is provided on the hand-control lever 2. Mounting frames 3 are respectively fixed at the front and rear ends of the pedal 1. The mounting frames 3 and the pedal 1 are detachably connected by welding or screws. The wheels 4 of the front wheel assembly or the rear wheel assembly are respectively connected to the mounting frames 3 through steering mechanisms.

[0021] Specifically, combined Figure 2As shown, the steering mechanism includes a bogie 17, a connecting rod 5 and a swing frame 7. The bogie 17 is a rectangular mechanism, fixed on the central axis 6 at the inner center of the front wheel assembly or the rear wheel assembly, and its side end face is perpendicular to the central axis 6. At the same time, its top end face and bottom end face are inclined downward, and its outer end face is inclined upward. A number of adjustment holes 12 arranged in sequence from top to bottom are opened on the outer end face, and a first ball head rod 8 is fixed in the adjustment hole 12. The height of the first ball head rod 8 can be adjusted according to actual conditions. The first ball head rod 8 is always perpendicular to the central axis 6. A shock absorber 16 is installed in the mounting frame 3, and the shock absorber 16 is elastically connected to the bogie 17. A second ball head rod 10 is fixed to the front side of the mounting frame 3 (away from the outer end face of the pedal). The second ball head rod 10 is perpendicular to the front end face of the mounting frame 3 and is aligned with the first ball head The rod 8 is parallel to each other, and the connecting rod 5 is a segmented structure, which is inclined with the horizontal plane (that is, the two connecting rods 5 are in an eight-shaped structure), and a steering knuckle is fixed at each end. The bottom end of the connecting rod 5 is rotatably connected to the first ball head rod 8 through the first steering knuckle 9, and the top end of the connecting rod 5 is rotatably connected to the second ball head rod 10 through the second steering knuckle 11. The first steering knuckle 9 can rotate around the first ball head rod 8 in all directions, and the second steering knuckle 11 can rotate around the second ball head rod 10 in all directions. A group of swing frames 7 are fixed on the left and right sides of the mounting frame 3, and a third ball head rod 13 is fixed on the top and bottom ends of the steering frame 17. One end of the swing frame 7 is rotatably connected to the mounting frame 3 through a rotating shaft 15, and the other end is rotatably connected to the third ball head rod 13 through a third steering knuckle 14. The third steering knuckle 14 can rotate around the third ball head rod 13 in all directions.

[0022] When the electric four-wheeled vehicle is stationary, the four wheels 4 are inclined relative to the central axis of the pedal length direction. Figure 3 As shown, at the same time, the four wheels 4 are inclined with respect to the horizontal plane, as shown in FIG. Figure 4 As shown, the wheel 4 cannot roll at this time, and the automatic braking function can be realized. The direction of the wheel 4 can be controlled by controlling the direction of the bogie 17.

[0023] When used, combine Figure 1-4 As shown, the operator stands on the pedal 1, which is forced to move downward, driving the inner side (the end mounted on the mounting frame 3) of each connecting rod 5 to deflect downward and the outer side (the end mounted on the bogie 17) to deflect upward, and the connecting rod 5 drives the bogie 17 to rotate axially. At the same time, the pedal 1 drives each swing frame 7 to flip upward, and the swing frame 7 drives the bogie 17 to deflect inward, thereby rotating the four wheels 4. The wheels 4 gradually become perpendicular to the horizontal plane and parallel to the central axis of the length direction of the pedal 1, realizing four-wheel unlocking;

[0024] When it is necessary to turn right, the operator's center of gravity tilts to the right, and the right side of the pedal 1 deflects slightly downward as a whole. The top ends of the two front and rear connecting rods 5 on the right side rotate slightly downward, and the bottom ends of the two rear connecting rods 5 on the right side rotate slightly upward. At the same time, the front and rear two sets of swing frames 7 on the right side all swing upward. Since the lever arm remains unchanged, the connecting rod 5 pushes the right wheel 4 to rotate axially to the right through the bogie 17, and the swing frame 7 pushes the right wheel 2 to tilt to the right as a whole through the bogie 17, thereby realizing the wheel tilting right turn;

[0025] Similarly, if the operator's center of gravity tilts to the left, the wheel can be tilted to turn left.

[0026] It should be noted that the parts not involved in the present invention are the same as the existing technology or can be implemented by using the existing technology.

[0027] In addition, in the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "set," and "provided with" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific contexts.

[0028] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. An electric four-wheeled vehicle comprising a pedal, a power source installed in the pedal, a hand-operated lever installed at the top of the pedal, and a front wheel assembly and a rear wheel assembly installed at the front and rear ends of the pedal, characterized in that: The front and rear ends of the pedal are respectively fixed with mounting frames, and the front wheel assembly and the rear wheel assembly are respectively connected to the mounting frame through a steering mechanism, and the front wheel assembly and the rear wheel assembly are deflected outward and inclined with respect to the central axis in the length direction of the pedal. The steering mechanism includes a bogie, a connecting rod and a swing frame. The bogie is fixed to the center of the inner side of the front wheel assembly or the rear wheel assembly, a first ball head rod is fixed to the side of the bogie, a second ball head rod is fixed to the side of the mounting frame, the connecting rod is inclined with the horizontal plane, the bottom end of the connecting rod is rotatably connected to the first ball head rod through a first steering knuckle, and the top end of the connecting rod is rotatably connected to the second ball head rod through a second steering knuckle, the first steering knuckle and the second steering knuckle can respectively rotate around the first ball head rod and the second ball head rod in a universal direction, a group of swing frames are respectively fixed on the left and right sides of the mounting frame, and a third ball head rod is respectively fixed to the top and bottom of the bogie, one end of the swing frame is rotatably connected to the mounting frame through a rotating shaft and can swing up and down, and the other end of the swing frame away from the mounting frame is rotatably connected to the third ball head rod through a third steering knuckle, and the third steering knuckle can rotate around the third ball head rod in a universal direction.

2. The electric four-wheeled vehicle according to claim 1, characterized in that: The bogie is a rectangular structure, the top end surface and the bottom end surface of the bogie on which the third ball head rod is mounted are tilted downward, and the outer end surface of the bogie on which the first ball head rod is mounted is tilted upward.

3. The electric four-wheeled vehicle according to claim 2, characterized in that: The outer end surface of the bogie has a plurality of adjustment holes arranged in sequence from top to bottom, the first ball head rod is fixed in the adjustment hole, and the first ball head rod is always perpendicular to the central axis.

4. The electric four-wheeled vehicle according to claim 3, characterized in that: A shock absorber is arranged in the mounting frame and is elastically connected to the bogie.

5. A method for operating an electric four-wheeled vehicle according to any one of claims 1 to 4, characterized in that: The steps include: (1) The operator stands on the pedal, which is forced to move downward, driving the inner side of each connecting rod to deflect downward and the outer side to deflect upward. The connecting rod drives the bogie to rotate axially. At the same time, the pedal drives each swing frame to flip upward, and the swing frame drives the bogie to deflect inward, thereby rotating the wheel. The wheel is perpendicular to the horizontal plane and parallel to the central axis of the pedal length direction, realizing four-wheel unlocking; (2) When turning right is required, the operator stands on the pedal and the center of gravity tilts to the right, and the right side of the pedal deflects downward as a whole. Then, the top ends of the two front and rear connecting rods on the right side deflect downward, and the bottom ends of the two rear connecting rods on the right side deflect upward. At the same time, the front and rear two sets of swing frames on the right side both flip upward. Since the lever arm remains unchanged, the connecting rod pushes the right wheel assembly to rotate axially to the right through the bogie, and the swing frame pushes the right wheel assembly to tilt to the right as a whole through the bogie. On the contrary, the left side of the pedal deflects upward, then the top ends of the two left connecting rods deflect upward, and the bottom ends of the two left connecting rods deflect downward. The front and rear two sets of swing frames on the left side both flip downward. Since the lever arm remains unchanged, the connecting rod pushes the left wheel assembly to rotate axially to the right through the bogie, and the swing frame pushes the left wheel assembly to tilt to the right as a whole through the bogie, thereby realizing the wheel tilting right turn. (3) Similarly, if the operator's center of gravity tilts to the left, the wheel can be tilted to the left.

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