Steering structure of all-terrain vehicle and all-terrain vehicle

Abstract

The steering structure comprises a steering wheel, a steering rod, a steering gear box, two pull rods and two steering rocker arms provided with front wheels, the steering wheel is located on a driving position on one side of a vehicle body support, and the steering wheel is fixedly connected to the top end of the steering rod and can control the steering rod to rotate. The bottom end of the steering rod is connected with the steering gear box, one ends of the two pull rods are connected to the output end of the same side of the steering gear box, the other ends of the two pull rods are connected with the two steering rocker arms respectively, and when the steering rod is controlled by a steering wheel to rotate, the pull rods push and pull the steering rocker arms to enable the steering rocker arms to drive front wheels to steer. The two pull rods which are originally connected to the output ends of the two sides of the steering gear box respectively are integrally connected to the output end of the same side of the steering gear box, so that the pull rod which is originally limited in length on one side and only short in length can be lengthened to meet the steering requirement of the front wheel, and the structure is simple and the cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to an all-terrain vehicle, in particular to a steering structure of all-terrain vehicle and all-terrain vehicle. BACKGROUND

[0002] All-terrain vehicle is also called "all-terrain four-wheel off-road motorcycle", including sand car, sand off-road kart and so on, its off-road performance is good, has wide tire and can increase the contact area with ground, generates greater friction and reduces the pressure of vehicle to ground, makes it easy to drive on sand beach, riverbed, forest road, stream and bad desert terrain.

[0003] The existing all-terrain vehicle such as the steering mechanism disclosed by Chinese utility model patent CN207029431U, including steering wheel, wheel, wheel includes left front wheel and rear front wheel, left front wheel and right front wheel are arranged on left front wheel frame and right front wheel frame respectively, still include rotating shaft, steering gear, steering rack, connecting arm, the upper end of rotating shaft is equipped with steering wheel, the lower end is equipped with steering gear, steering gear is engaged with steering rack, the left end of steering rack is connected with first connecting rod, and the right end is connected with second connecting rod, first connecting rod is connected with left front wheel frame, and second connecting rod is connected with right front wheel frame, and the left and right movement of steering rack is used to pull first connecting rod and second connecting rod to control left front wheel and right front wheel steering.

[0004] The existing double-seat all-terrain vehicle, driving position is generally arranged at left side, is limited by vehicle structure, wants to guarantee that steering wheel is consistent with the longitudinal center of driving position, and the direction machine connected with the steering shaft is arranged at the same side, left side pull rod and right side pull rod are connected on the output end on the left and right sides of direction machine, and this structure can make the length of left side pull rod limited, only the left side pull rod of shorter can be arranged, thereby leading to the angle of left side pull rod pulling left side wheel steering when the rack of direction machine moves left and right is insufficient, if the length of left side pull rod is increased by the way that the steering gear of direction machine is forced to move right on the steering shaft and increases the length of left side pull rod by increasing universal joint on the steering shaft, this way has higher cost. UTILITY MODEL CONTENTS

[0005] Based on the above-mentioned double-seat all-terrain vehicle, driving position is generally arranged at the left side of frame, is limited by vehicle structure, wants to guarantee that steering wheel is consistent with the longitudinal center of driving position, and the direction machine connected with the steering shaft is arranged at the same side, left side pull rod and right side pull rod are connected on the output end on the left and right sides of direction machine, and this structure can make the length of left side pull rod limited, thereby leading to the angle of left side pull rod pulling left side wheel steering when the rack of direction machine moves left and right is insufficient, if the length of left side pull rod is increased by the way that the steering gear of direction machine is forced to move right on the steering shaft and increases the length of left side pull rod by increasing universal joint on the steering shaft, this way has higher cost.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a steering structure for an all-terrain vehicle, which is set at the front of the vehicle body frame. The steering structure includes a steering wheel, a steering rod, a steering gear, two tie rods, and two steering rocker arms with front wheels mounted on them. The steering wheel is located in the driver's seat on one side of the vehicle body frame. The steering wheel is fixedly connected to the top of the steering rod and can control the rotation of the steering rod. The bottom end of the steering rod is connected to the steering gear. One end of the two tie rods is connected to the output end on the same side of the steering gear. The other end of the two tie rods is connected to the two steering rocker arms respectively. When the steering rod is rotated by the steering wheel, the tie rods push and pull the steering rocker arms, causing the steering rocker arms to drive the front wheels to turn.

[0007] A further preferred embodiment of this utility model is as follows: the steering structure further includes suspension assemblies disposed on both sides of the front part of the vehicle body bracket for connecting the steering rocker arms. The suspension assemblies include an upper suspension and a lower suspension located below the upper suspension. Both the upper and lower suspensions are hinged to the vehicle body bracket and can swing up and down around the hinge point. The upper and lower ends of the steering rocker arms are connected to the upper and lower suspensions respectively through ball joint bearings. A shock absorber is provided between the lower suspension and the vehicle body bracket. The lower end of the shock absorber is hinged to the lower suspension, and the upper end of the shock absorber is hinged to the vehicle body bracket.

[0008] A further preferred embodiment of this invention is as follows: when the front wheels are in a straightened state, the connection points between the two tie rods and the output end of the steering gear are located in the middle of the front of the vehicle body support.

[0009] A further preferred embodiment of this invention is that, when the front wheels are in a symmetrical position, the two tie rods are symmetrically arranged relative to the vehicle body support.

[0010] A further preferred embodiment of this utility model is as follows: a butterfly plate is fixedly provided at the lower end of the steering rocker arm, an axle is installed on the butterfly plate, the front wheel is connected to the axle, and an extended tie rod lug is fixedly provided at the upper end of the steering rocker arm, with the end of the tie rod connected to the tie rod lug.

[0011] A further preferred technical solution of this utility model is as follows: the steering gear includes a housing, a steering gear disposed in the housing, and a steering rack disposed in the housing and meshing with the steering gear. The steering rack is arranged laterally, and its two ends extend from both sides of the housing as output ends. A connecting seat is fixedly provided on one end of the steering rack, and the ends of the two pull rods are both connected to the connecting seat. The bottom end of the steering rod is connected to the steering gear.

[0012] A further preferred embodiment of this invention is that the upper cantilever and the lower cantilever are parallel.

[0013] A further preferred embodiment of this invention is that the two ends of the tie rod are connected to the output end of the steering gear and the steering rocker arm respectively via ball joint bearings.

[0014] Another subject matter: an all-terrain vehicle, comprising a vehicle body support, a rear wheel arranged at the rear of the vehicle body support, and a steering structure of the all-terrain vehicle.

[0015] Compared with the prior art, the utility model has the advantages that the two pull rods originally connected to the output ends on the two sides of the steering engine are integrated and connected to the output end on the same side of the steering engine, the length of the pull rod originally limited on one side is extended to be longer to meet the steering of the front wheel, the steering angle of the front wheel is avoided from being insufficient, the structure only changes the position of the pull rod connection and does not need to add other components, and the structure is simple and low in cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be further described in detail below in combination with the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments and therefore should not be regarded as limiting the scope of the utility model. In addition, unless specifically indicated, the drawings only schematically show the composition or structure of the described objects and can contain exaggerated display, and the drawings are not necessarily drawn to scale.

[0017] Figure 1 Structure diagram of all-terrain vehicle Figure 1 ;

[0018] Figure 2 Structure diagram of all-terrain vehicle Figure 2 ;

[0019] Figure 3 Structure diagram of all-terrain vehicle Figure 3 ;

[0020] Figure 4 Front view of all-terrain vehicle

[0021] Figure 5 Structure diagram of steering structure Figure 1 ;

[0022] Figure 6 Structure diagram of steering structure Figure 2 ;

[0023] Figure 7 Structure diagram of steering wheel, steering rod and steering engine

[0024] Figure 8 Structure diagram of all-terrain vehicle when turning right

[0025] Figure 9 Structure diagram of all-terrain vehicle when turning left

[0026] In the figure: 1, vehicle body support; 2, rear wheel; 3, steering wheel; 4, steering rod; 5, steering gear; 6, suspension assembly; 7, shock absorber; 8, front wheel; 9, pull rod; 10, steering rocker arm; 11, first mounting seat; 12, driver's seat; 13, lower suspension; 14, upper suspension; 15, connecting seat; 16, wheel shaft; 17, butterfly plate; 18, spherical joint bearing; 19, pull rod lug; 20, shell; 21, steering rack. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is merely illustrative, exemplary, and should not be construed as limiting the scope of protection of the present application.

[0028] It should be noted that similar reference numerals represent similar items in the following drawings, so once an item is defined in one drawing, it may not be further defined and explained in subsequent drawings.

[0029] Figures 1-9 As shown, the all-terrain vehicle comprises a vehicle body support 1, a rear wheel 2 arranged at the rear of the vehicle body support 1, and a steering structure arranged at the front of the vehicle body support 1. The vehicle body support 1 is a double-seat structure, and the steering structure arranged at the front is used for the driver to control the steering of the vehicle.

[0030] Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 8 , Figure 9 As shown, the steering structure comprises a steering wheel 3, a steering rod 4, a steering gear 5, two pull rods 9, and two steering rocker arms 10 on which the front wheels 8 are arranged. The steering wheel 3 is located at the driver's seat 12 on the left side of the vehicle body support 1. The steering wheel 3 is fixedly connected to the top end of the steering rod 4 and can control the rotation of the steering rod 4. The bottom end of the steering rod 4 is connected to the steering gear 5. One end of each of the two pull rods 9 is connected to the output end on the same side of the steering gear 5. The other end of each of the two pull rods 9 is connected to the two steering rocker arms 10, respectively. When the steering rod 4 is rotated by the steering wheel 3, the pull rods 9 push and pull the steering rocker arms 10, so that the steering rocker arms 10 rotate and drive the front wheels 8 to steer.

[0031] The present patent integrates the two pull rods 9 originally connected to the output ends on both sides of the steering gear 5 into the output end on the same side of the steering gear 5. The pull rod points where the pull rods 9 are connected to the output end of the steering gear 5 are arranged on the left and right of the driver's seat 12. The length of the pull rods 9 originally limited on one side is extended to meet the steering of the front wheels 8, so as to avoid insufficient steering angle of the front wheels 8. The structure only changes the position where the pull rods 9 are connected without adding other components, so the structure is simple and the cost is low.

[0032] Figure 2 As shown in the figure, the first mounting seat 11 for installing the steering rod 4 is arranged on the vehicle body support 1, and the steering rod 4 is installed on the first mounting seat 11 and can rotate around its own axis.

[0033] Figure 1 As shown in the figure, the mounting rod is fixed on the vehicle body support 1, and the steering gear 5 is fixedly installed on the mounting rod.

[0034] Figure 1 、 Figure 3 As shown in the figure, the steering structure further comprises the suspension assemblies 6 arranged on both sides of the front part of the vehicle body support 1 for connecting the steering rocker arms 10, the two steering rocker arms 10 are respectively connected to the suspension assemblies 6 on both sides, the suspension assemblies 6 comprise the upper suspensions 14 and the lower suspensions 13 below the upper suspensions 14, the upper suspensions 14 and the lower suspensions 13 are both hinged to the vehicle body support 1 and can swing up and down around the hinge, the upper and lower ends of the steering rocker arms 10 are respectively connected to the upper suspensions 14 and the lower suspensions 13 through the spherical joint bearings 18, and the shock absorber 7 is arranged between the lower suspension 13 and the vehicle body support 1, the lower end of the shock absorber 7 is hinged to the lower suspension 13, and the upper end of the shock absorber 7 is hinged to the vehicle body support 1.

[0035] The upper and lower ends of the steering rocker arms 10 are respectively connected to the upper suspensions 14 and the lower suspensions 13 through the spherical joint bearings 18, so that the steering rocker arms 10 can be universally rotated with the upper suspensions 14 and the lower suspensions 13, thereby when the pull rod 9 moves to push and pull the steering rocker arms 10, the steering rocker arms 10 can be rotated relative to the upper suspensions 14 and the lower suspensions 13 to drive the front wheels 8 to steer, in addition, the structure of the independent suspension makes the upper suspensions 14 and the lower suspensions 13 swing up and down according to the road conditions when the vehicle passes through the uneven ground, so that the front wheels 8 on both sides can form a height difference to adapt to the road conditions, so as to avoid the vehicle body support 1 from tilting, and the shock absorber 7 provides damping in the process of the upper suspensions 14 and the lower suspensions 13 swinging, so as to alleviate the impact of the uneven road on the vehicle body support 1, and improve the comfort and safety.

[0036] The shock absorber 7 is a conventional damping structure in the field, which can refer to the shock absorber of the brand Chuan Nan.

[0037] Figure 4 As shown in the figure, preferably, the upper suspensions 14 are parallel to the lower suspensions 13, and the structure that the upper suspensions 14 are parallel to the lower suspensions 13 makes the vehicle body support 1, the upper suspensions 14, the lower suspensions 13 and the steering rocker arms 10 form a parallelogram structure, so that the stability of the suspension assembly 6 swinging is better.

[0038] Figure 7As shown, the steering gear 5 is a conventional technical structure in the art, for example, the steering gear 5 comprises a housing 20, a steering gear set in the housing 20, and a steering rack 21 set in the housing 20 and engaged with the steering gear, the steering rack 21 is horizontally disposed and two ends thereof extend from two sides of the housing 20 as output ends, a connecting seat 15 is fixedly arranged on one end of the steering rack 21, and the ends of the two pull rods 9 are connected to the connecting seat 15, and the bottom end of the steering rod 4 is connected to the steering gear, when the driver rotates the steering wheel 3, the steering wheel 3 drives the steering rod 4 to rotate, the steering rod 4 drives the steering gear in the housing 20 to rotate, the rotation of the steering gear makes the steering rack 21 move leftward or rightward, and the steering rack 21 pushes and pulls the two pull rods 9 in the process of horizontal movement, so that the two steering rocker arms 10 rotate to realize the steering of the front wheels 8.

[0039] Figure 5 、 Figure 6 As shown, the lower end of the steering rocker arm 10 is fixedly provided with a butterfly plate 17, the butterfly plate 17 is installed with an axle 16, the front wheel 8 is connected to the axle 16, and the upper end of the steering rocker arm 10 is fixedly provided with a pull rod lug 19 extending outward, and the end of the pull rod 9 is connected to the pull rod lug 19.

[0040] Preferably, the two ends of the pull rod 9 are connected to the output ends of the steering gear 5 and the steering rocker arm 10 through spherical joint bearings 18. Specifically, one end of the pull rod 9 is connected to the connecting seat 15 through the spherical joint bearing 18, and the other end of the pull rod 9 is connected to the pull rod lug 19 through the spherical joint bearing 18, so that the angle between the pull rod 9 and the steering rocker arm 10 and the angle between the pull rod 9 and the steering rack 21 can change when the steering rack 21 drives the steering rocker arm 10 to rotate through the pull rod 9 to control the steering of the front wheel 8, thereby realizing the transmission of motion.

[0041] The spherical joint bearing 18 is a universal joint bearing structure available on the market, and the reference brand is KIF, and the model is GE-ES joint bearing.

[0042] Figure 4 As shown, when the front wheels 8 on both sides are in the state of being adjusted, the connection parts of the two pull rods 9 and the output ends of the steering gear 5 are located in the middle position of the front part of the vehicle body support 1, so as to realize the lengthening of the one-side pull rod 9.

[0043] Preferably, when the front wheels 8 on both sides are in the state of being adjusted, the two pull rods 9 are symmetrically arranged relative to the vehicle body support 1, and the symmetrical arrangement structure makes the steering angles of the front wheels 8 on both sides closer to Ackerman angle when steering, so as to make the vehicle steering stability better, reduce the tire wear of the front wheels 8 and the load of the suspension system.

[0044] The steering structure of the all-terrain vehicle and the all-terrain vehicle are introduced above, the principle and the implementation mode of the present application are described by applying specific examples in the present article, the above example is only used for helping to understand the present application and the core idea. It should be pointed out that for ordinary skilled person in the art, without departing from the principle of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A steering structure of an all-terrain vehicle, provided at a front portion of a vehicle body support, characterized by comprising: The turning structure comprises a steering wheel, a steering rod, a steering machine, two pull rods and two steering rocker arms provided with front wheels, the steering wheel is located at a driving position on one side of the vehicle body support, the steering wheel is fixedly connected to the top end of the steering rod and can control the rotation of the steering rod, the bottom end of the steering rod is connected to the steering machine, one end of each of the two pull rods is connected to the output end on the same side of the steering machine, and the other end of each of the two pull rods is connected to the two steering rocker arms respectively, when the steering rod is controlled to rotate by the steering wheel, the pull rods push and pull the steering rocker arms to drive the front wheels to turn.

2. The all-terrain vehicle steering arrangement of claim 1, wherein, The turning structure further comprises a suspension assembly arranged on the front part of the vehicle body support and used for connecting the steering rocker arms, the suspension assembly comprises an upper suspension and a lower suspension arranged below the upper suspension, the upper suspension and the lower suspension are both hinged to the vehicle body support and can swing up and down around the hinge, the upper end and the lower end of the steering rocker arm are connected to the upper suspension and the lower suspension respectively through spherical joint bearings, and a shock absorber is arranged between the lower suspension and the vehicle body support, the lower end of the shock absorber is hinged to the lower suspension, and the upper end of the shock absorber is hinged to the vehicle body support.

3. The all-terrain vehicle steering arrangement of claim 1, wherein, When the front wheels are in the normal state, the connection parts of the two pull rods and the output end of the steering machine are located in the middle of the front part of the vehicle body support.

4. The all-terrain vehicle steering arrangement of claim 3, wherein, When the front wheels are in the normal state, the two pull rods are symmetrically arranged relative to the vehicle body support.

5. The all-terrain vehicle steering arrangement of claim 1, wherein, The lower end of the steering rocker arm is fixedly provided with a butterfly plate, the butterfly plate is provided with an axle, the front wheel is connected to the axle, the upper end of the steering rocker arm is fixedly provided with a pull rod lug, and the end of the pull rod is connected to the pull rod lug.

6. The all-terrain vehicle steering arrangement of claim 1, wherein, The steering machine comprises a housing, a steering gear arranged in the housing and a steering rack arranged in the housing and engaged with the steering gear, the steering rack is arranged horizontally and extends out of the housing as an output end at both ends, a connecting seat is fixedly arranged on one end of the steering rack, the end of each of the two pull rods is connected to the connecting seat, and the bottom end of the steering rod is connected to the steering gear.

7. The all-terrain vehicle steering arrangement of claim 2, wherein, The upper suspension and the lower suspension are parallel.

8. The all-terrain vehicle steering arrangement of claim 1 or 5 or 6, wherein, The two ends of the pull rod are connected to the output end of the steering machine and the steering rocker arm respectively through spherical joint bearings.

9. An all-terrain vehicle characterized by, The all-terrain vehicle comprises a vehicle body support, rear wheels arranged at the rear part of the vehicle body support and the turning structure of the all-terrain vehicle according to any one of claims 1-8.

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