Steering structure and all-terrain vehicle

Abstract

The utility model provides a steering structure and an all-terrain vehicle. The steering mechanism is used for connecting a steering wheel and a steering gear of the vehicle and comprises a support, a first shell, an adjusting device, a steering shaft and a power-assisted steering device. The support is used for connecting a vehicle body. The first shell is rotationally connected with the bracket; the adjusting device is connected with the first shell and the support so as to drive the first shell to rotate. One end of the steering shaft is connected with the steering wheel, and the other end is connected with the power-assisted steering device through a universal joint; the power-assisted steering device is connected with a steering gear through a universal joint. The first shell, the adjusting device and the power-assisted steering device in the steering system are integrally installed on the support, so that the situation that the assembly difficulty is large due to the fact that the first shell, the adjusting device and the power-assisted steering device are connected with a vehicle body through other parts is avoided, the number of the parts is reduced, meanwhile, the compactness of the overall structure and the precision control performance of manufacturing and assembly are improved, and the assembly difficulty is reduced; and the installation process with the vehicle body is simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle engineering field, concretely relates to a steering structure and all terrain vehicle. BACKGROUND

[0002] All terrain vehicle is a kind of vehicle with good cross-country performance, and is widely used in outdoor sports and agricultural fields.However, due to the complex and changeable road conditions of all terrain vehicle, the design of its steering device is very important to improve the operating performance of all terrain vehicle.The steering device of all terrain vehicle on the market has some defects, and the power-assisted device, shell, adjusting device and other parts in the steering system need to be connected and fixed with the vehicle body respectively, and also need to be assembled and connected with each other, which has high precision requirement for assembly and poor compactness of overall structure, increasing the assembly difficulty. SUMMARY

[0003] In view of the problems existing in the prior art, the utility model provides a steering structure and all terrain vehicle to improve the technical problem that the integration of parts in the steering device of existing all terrain vehicle is low, and the overall structure has poor compactness, increasing the assembly difficulty.

[0004] To achieve the above object and other related objects, the first aspect of the utility model provides a steering structure, which is used to connect the steering wheel and the steering gear of a vehicle, and comprises a bracket, a first shell, an adjusting device, a steering shaft and a steering power-assisted device; the bracket is used to be connected with the vehicle body, and the first shell is rotationally connected with the bracket; the adjusting device comprises a second shell and a movable adjusting end, one of the second shell and the movable adjusting end is rotationally connected with the bracket, and the other of the second shell and the movable adjusting end is rotationally connected with the first shell; the steering power-assisted device is installed on the bracket and connected with the steering gear through a universal joint; one end of the steering shaft is connected with the steering wheel; the other end of the steering shaft passes through the first shell and is connected with the steering power-assisted device through a universal joint.

[0005] In an embodiment of the steering structure of the utility model, the steering structure further comprises a first extension shaft group, one end of the first extension shaft group is connected with the steering shaft through a universal joint, and the other end of the first extension shaft group is connected with the steering power-assisted device through a universal joint.

[0006] In an embodiment of the steering structure of the utility model, the first extension shaft group comprises a first driven shaft fork and a first driving fork, the first driven shaft fork is connected with the steering shaft through a first cross shaft; the first driving fork is installed on one end of the first driven shaft fork and connected with the steering power-assisted device through a second cross shaft.

[0007] In the utility model steering structure one implementation, first spline part is provided on the first driven axle fork, the first driving fork holds the first spline part in the hoop connection.

[0008] In the utility model steering structure one implementation, the first extension shaft group is through the first cross axle connection the steering axle, the center of the first cross axle is located the axle direction of the first housing and the support rotating joint.

[0009] In the utility model steering structure one implementation, the support includes bottom plate, first side plate and first opening, the bottom plate fixed connection the steering aid device, the first extension shaft group is located the bottom plate side away from the steering aid device, the first side plate fixed connection the bottom plate, and located the bottom plate side away from the steering aid device, and the first side plate is connected with the vehicle body, and the first opening is set up on the first side plate, and faces the first extension shaft group and the connection of the steering aid device.

[0010] In the utility model steering structure one implementation, the support is integrally cast structure.

[0011] In the utility model steering structure one implementation, the steering structure still includes second extension shaft group, one end of the second extension shaft group is through the universal joint connection the steering aid device, the other end of the second extension shaft group is through the universal joint connection the steering gear.

[0012] In the utility model steering structure one implementation, the second extension shaft group includes second driven fork and second driving axle fork, the first driven fork is through the third cross axle connection the steering aid device, the second driving axle fork is connected the second driven fork, and is through the fourth cross axle connection the steering gear.

[0013] In the utility model steering structure one implementation, second spline part is provided on the second driving axle fork, the second driven fork hoop connection the second spline part.

[0014] In the utility model steering structure one implementation, the steering axle is through the rotating bearing press fit fixed connection the first housing.

[0015] The utility model discloses a second aspect still provide a kind of all terrain vehicle, the all terrain vehicle includes steering wheel, steering gear and steering structure, the steering structure connects the steering wheel with the steering gear.The steering structure includes support, first shell, adjusting device, steering shaft and steering assist device;The support is used to be connected with the vehicle body of vehicle;The first shell is rotatably connected with the support;The adjusting device includes second shell and movable adjusting end, one of the second shell and the movable adjusting end is rotatably connected with the support, another of the second shell and the movable adjusting end is rotatably connected with the first shell;The steering assist device is installed on the support, and is connected with the steering gear by universal joint;One end of the steering shaft is connected with the steering wheel;The other end of the steering shaft passes through the first shell and is connected with the steering assist device by universal joint.

[0016] In the steering structure of the utility model, the first shell, the adjusting device and the steering assist device in the steering system are integratedly designed, the first shell, the adjusting device and the steering assist device are integrally connected by the support, so that they are connected with the vehicle body by other components, the number of components is reduced, the compactness of the overall structure is improved, the precision control of manufacturing and assembly is improved, the assembly difficulty is reduced, and the mounting process between the vehicle body is simplified. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other embodiments according to these drawings without creating labor.

[0018] Figure 1 It is a first angle three-dimensional schematic view in the embodiment of the steering structure of the utility model;

[0019] Figure 2 It is a second angle three-dimensional schematic view in the embodiment of the steering structure of the utility model;

[0020] Figure 3 It is a first extension shaft group and its connection schematic view in the embodiment of the steering structure of the utility model;

[0021] Figure 4 It is a first extension shaft group structure schematic view in the embodiment of the steering structure of the utility model;

[0022] Figure 5 It is a second extension shaft group and its connection schematic view in the embodiment of the steering structure of the utility model;

[0023] Figure 6The utility model discloses a steering structure one embodiment in the utility model connects the schematic diagram of first housing with first steering shaft.

[0024] Figure 7 The utility model discloses a steering structure one embodiment in the utility model connects the schematic diagram of first housing with first steering shaft.

[0025] Figure 8 The utility model discloses a steering structure one embodiment in the utility model connects the schematic diagram of first housing with first steering shaft.

[0026] Figure 9 The utility model discloses a steering structure one embodiment in the utility model connects the schematic diagram of first housing with first steering shaft.

[0027] Figure 10 The utility model discloses a steering structure one embodiment in the utility model connects the schematic diagram of first housing with first steering shaft.

[0028] Element number explanation:

[0029] 10, car body;20, steering wheel;200, steering structure;210, support;211, bottom plate;212, first side plate;213, first opening;214, second side plate;215, third side plate;220, first housing;230, adjusting device;231, second housing;232, movable adjusting end;240, steering shaft;241, rotation bearing;250, steering assist device;260, steering gear;270, first extension shaft group;271, first driven shaft fork;272, first driving fork;273, first spline part;280, second extension shaft group;281, second driven fork;282, second driving shaft fork;283, second spline part;291, first cross shaft;292, second cross shaft;293, third cross shaft;294, fourth cross shaft. Specific implementation

[0030] The following through specific concrete example explains the implementation of the utility model, and the person skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification. The utility model can also be implemented or applied by another different specific implementation, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the utility model are for describing specific specific implementation, not for limiting the protection scope of the utility model. The test method in the following embodiments is not specified, usually according to conventional conditions, or according to the conditions suggested by each manufacturer.

[0031] When the embodiments give a numerical range, it should be understood that, unless the utility model discloses otherwise, both ends of each numerical range and any one numerical between both ends can be selected. Unless otherwise defined, all technical and scientific terms used in the utility model can be used with any method, equipment and material of the prior art similar or equivalent to the method, equipment and material in the embodiments of the utility model to realize the utility model, and the prior art mastered by the person skilled in the art and the description of the utility model.

[0032] It should be understood that the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in the specification are only for the convenience of clear description, and are not used to limit the scope of the utility model, and the change or adjustment of the relative relationship is also regarded as the scope of the utility model without substantial change of the technical content.

[0033] Please refer to Figures 1 to 10 The utility model provides a kind of steering structure and all terrain vehicle, by integrating and installing first shell, adjusting device and steering assist device on support, and by support integrated installation to vehicle body, reduce the number of parts, to improve the technical problem of lower integration of parts in the steering device of existing all terrain vehicle, overall structure compactness is poor, difficult to assemble.

[0034] To achieve the above object and other related purposes, the first aspect of the utility model provides a kind of steering structure, steering structure 200 as the important component part of vehicle control, it allows driver to change the driving direction of vehicle by rotating steering wheel, accurately controls the driving path of vehicle, makes vehicle travel according to the expected route;In the embodiment of the utility model steering structure, please refer to Figures 1 to 2The turning structure 200 comprises a bracket 210, a first shell 220, an adjusting device 230, a turning shaft 240 and a turning assisting device 250; the bracket 210 serves as an integrated mounting structure of the first shell 220, the adjusting device 230 and the turning assisting device 250, for integrally assembling and connecting the first shell 220, the adjusting device 230 and the turning assisting device 250, and mounting and connecting the bracket 210 to the vehicle body 10, avoiding the separate connection of each component to the vehicle body 10 through other parts, integrating multiple components together by the bracket 210, enhancing the rigidity and stability of the overall structure, and being conducive to improving the safety and reliability of vehicle driving. The number of components is reduced, the material cost and assembly complexity are reduced, the space occupation is reduced, the compactness of the overall structure is improved, and the first shell 220, the adjusting device 230 and the turning assisting device 250 are integrally mounted on the bracket 210 and assembled and connected with each other, compared with being mounted and connected to the vehicle body 10 and assembled and connected with each other, the assembly error when being assembled after being mounted and connected to the vehicle body 10 and then being assembled with each other can be eliminated, and the assembly difficulty is reduced. In the embodiment, the structure and material of the bracket 210 are not limited, and the mounting and connecting requirements are met. The bracket 210 is fixed on the vehicle body 10 by a fixing bolt, which belongs to a fixed part and does not participate in the rotating movement, and the number of fixing bolts is not limited, and the mounting firmness with the vehicle body 10 is met.

[0035] The first shell 220 is rotatably connected with the bracket 210, the adjusting device 230 comprises a second shell 231 and a movable adjusting end 232, the second shell 231 and the movable adjusting end 232 are used for connecting the first shell 220 and the bracket 210 respectively, for example, the second shell 231 is rotatably connected with the bracket 210, and the movable adjusting end 232 is rotatably connected with the first shell 220, or vice versa, the second shell 231 is rotatably connected with the first shell 220, and the movable adjusting end 232 is rotatably connected with the bracket 210, so as to drive the rotating movement of the first shell 220 relative to the bracket 210. Specifically, in the embodiment, the second shell 231 is rotatably connected with the bracket 210, and the movable adjusting end 232 is rotatably connected with the first shell 220.

[0036] In the embodiment, the first shell 220 is a hollow tube shell structure, the steering shaft 240 penetrates the hollow tube shell of the first shell 220 and is rotationally connected with the first shell 220; the lower end of the first shell 220 is rotationally connected with the support 210, so that the first shell 220 can realize rotational movement relative to the support 210; the adjusting device 230 is a power driving mechanism for realizing the rotational movement of the first shell 220, one end of the adjusting device 230 is hingedly connected with the support 210, and the other end is hingedly connected with the shell of the first shell 220; the adjusting device 230 can be any suitable type of device for realizing the rotational movement of the first shell 220 relative to the support 210, such as a manual adjusting device, an electric adjusting device, a hydraulic or pneumatic adjusting device. In the embodiment, the adjusting device 230 is a pneumatic adjusting device, such as a gas spring with controllable and lockable functions; the cylinder end of the gas spring is hingedly connected with the support 210, and the piston rod end of the gas spring is hingedly connected with the first shell 220; the extension and retraction movement of the gas spring drives the rotational adjustment of the first shell 220, thereby realizing the rotational adjustment of the steering shaft 240, and further realizing the angle and height adjustment of the steering wheel or the handlebar installed on the steering shaft 240, so that the vehicle can adapt to drivers of different heights and body types, and the driving comfort and safety are improved.

[0037] The steering shaft 240 is rotationally installed on the first shell 220, one end of the steering shaft 240 is installed with a handlebar, and the other end penetrates the first shell 220 and is connected with a steering booster device 250 through a universal joint, so as to transmit the steering action in the handlebar to the input end of the steering booster device 250; the steering booster device 250 is installed on the support 210, and the output end of the steering booster device 250 is connected with a steering gear 260 through a universal joint, so as to transmit the steering action to the steering wheel connected with the steering gear 260, and finally realize the steering control of the steering system.

[0038] The steering gear 260 is rigidly fixedly installed on the vehicle body 10 and is used for performing the steering function of the vehicle. The steering gear 260 can be any suitable type of device for transmitting the steering action from the steering shaft 240 to the steering wheel 20 through the steering booster device 250 and controlling the steering of the steering wheel 20, and the specific structure thereof includes but is not limited to a steering gear mechanism, a steering drag link and the like, and the structure and working principle of the steering gear 260 are widely applied in the field of vehicle steering systems and are well known in the industry, and thus will not be described herein.

[0039] In the utility model turning structure one implementation, turning assist device 250 can be for helping driver to reduce the strength required for steering the steering wheel in the steering and improve the comfort of driving feeling of all suitable type device, for example, can be mechanical hydraulic power steering device, electronic hydraulic power steering device, electric power steering device, variable power steering device etc.

[0040] Please refer to Figure 3 and Figure 9In the steering structure one embodiment of the utility model, steering structure still includes first extension shaft group 270, one end of first extension shaft group 270 is connected steering shaft 240 through universal joint, the other end of first extension shaft group 270 is connected steering booster 250 through universal joint. The output end of steering shaft 240 is connected with the input end of steering booster 250 through first extension shaft group 270, forms first section steering transmission shaft. It is ensured that the steering instruction can be smoothly transmitted from steering wheel to steering booster 250, and is transmitted to second section steering transmission shaft after EPS boost, it is ensured that the accurate transmission and execution of steering instruction. Specifically, in the embodiment, first extension shaft group 270 includes first driven axle fork 271 and first driving fork 272, first driven axle fork 271 is connected the axle fork part of steering shaft 240 through first cross axle 291, forms cross axle universal joint connecting structure;When steering shaft 240 rotates, drives first cross axle 291 to rotate, and then transmits movement to one end of first driven axle fork 271;The other end of first driven axle fork 271 is fixedly connected first driving fork 272, and the fork-shaped part of first driving fork 272 is connected the input end of steering booster 250 through second cross axle 292, and the input end of steering booster 250 has axle fork part connected with second cross axle 292, and the axle fork part of steering booster 250 is connected first driving fork 272 through second cross axle 292, forms cross axle universal joint connecting structure;The movement on first extension shaft group 270 is continuously transmitted to steering booster 250;Because the angle usually allowed when using cross axle universal joint to drive is not more than 40 degrees, the smaller the angle, the longer the service life of cross axle universal joint, in the embodiment, by using first extension shaft group 270 and first cross axle 291 and second cross axle 292 to drive, instead of the driving mode of driving, the transmission angle difference is optimized, so that the transmission is more smooth, specifically: the included angle A1' of the steering shaft 240 and the steering booster 250 connected by cross axle transmission in the traditional transmission design is split into the transmission included angle A1 of the axial direction of first driven axle fork 271 and the axial direction of steering shaft 240 and the transmission included angle A2 of the axial direction of first driving fork 272 and the axial direction of the input end of steering booster 250, further reduces the difference of input angle, so that the transmission is more smooth, reduces the moment fluctuation, thereby provides better steering feeling, and prolongs the service life of cross axle universal joint.

[0041] Please refer to Figure 3 and Figure 4In the steering structure one embodiment of the utility model, first spline part 273 is established on first driven axle fork 271, first driving fork 272 is embraced hoop and is connected first spline part 273.Specifically, first spline part 273 is arranged on the shaft body of first driven axle fork 271 away from axle fork part, first driving fork 272 is provided with spline hole matched with first spline part 273, and locking mechanism is arranged on first driving fork 272, in this embodiment, the mode of bolt locking is adopted, and first driving fork 272 is embraced hoop and locked with first spline part 273.By setting first spline part 273, the torque from first driven axle fork 271 can be reliably transmitted to first driving fork 272, and then transmitted to the input end of steering assist device 250;Meanwhile, spline connection allows certain angular deviation, so that in the steering process, even if there is angular change between input shaft and output shaft, power can be effectively transmitted, and efficient, stable and reliable mechanical connection is ensured.

[0042] Please refer to Figure 3 、 Figure 7 and Figure 8 In the steering structure one embodiment of the utility model, support 210 includes bottom plate 211, first side plate 212, first opening 213, second side plate 214 and third side plate 215, bottom plate 211 is fixedly connected with the shell of steering assist device 250 through a plurality of annularly arranged bolts, and the input end of steering assist device 250 is connected with first extension shaft group 270 through the opening on bottom plate 211.First extension shaft group 270 is located on the side of bottom plate 211 away from steering assist device 250.First side plate 212 is arranged on the side of bottom plate 211 away from steering assist device 250, and first side plate 212 is fixedly connected with the side of bottom plate 211, and first side plate 212 is used as the mounting plate of support 210 and is connected with the vehicle body, and first side plate 212 is fixedly connected with the vehicle body through a plurality of annularly distributed bolts.

[0043] The second side plate 214 and the third side plate 215 are connected to two side edges of the first side plate 212 respectively, and the second side plate 214 is arranged opposite to the third side plate 215. The second side plate 214 and the third side plate 215 are connected to one end of the first shell 220 which is away from the bottom plate 211, so that the first shell 220 is integrated and mounted on the support 210. The bottom plate 211, the first side plate 212, the second side plate 214 and the third side plate 215 surround a mounting area of a semi-enclosed structure, and a connection between the first extension shaft group 270 and an input end of the steering assist device 250 is located in the mounting area. A first opening 213 is arranged on the first side plate 212 and faces the connection between the first extension shaft group 270 and the steering assist device 250. The first opening 213 can be used as a lightening hole to reduce the overall weight of the support 210, provide an operation space for assembly, facilitate assembly and connection between structural components in the mounting area, and serve as a hole through which a vehicle body wire harness passes to shorten the wiring distance of part of the vehicle body wire harness.

[0044] In an embodiment of the steering structure of the utility model, the support 210 is an integrally cast structure, the integrally cast support 210 can ensure the rigidity requirement of the support 210 and the position consistency of mounting holes of the same batch of supports 210, thereby ensuring the precision control of integrated assembly of the first shell 220, the adjusting device 230 and the steering assist device 250 on the support 210.

[0045] Please refer to Figure 7 In an embodiment of the steering structure of the utility model, the first extension shaft group 270 is connected to the steering shaft 240 through the first cross shaft 291, and the center of the first cross shaft 291 is located in the axial direction of the rotating connection position of the first shell 220 and the support 210. Specifically, the first shell 220 is hingedly mounted on the support 210, and under the driving action of the adjusting device 230, the first shell 220 can rotate relative to the support 210 to drive the steering wheel to adjust the angle and height. When the first shell 220 rotates, since the center of the first cross shaft 291 is located in the axial direction of the rotation of the first shell 220, only the included angle between the steering shaft 240 and the first driven shaft fork 271 changes, and the included angle between the first driving fork 272 and the steering assist device 250 does not change, and the theoretical length of the transmission shaft does not change. This structure design helps to maintain the stability and accuracy of the steering system.

[0046] Please refer to Figure 5In the steering structure one embodiment of the utility model, steering structure 200 still includes second extension shaft group 280, one end of second extension shaft group 280 is connected steering assist device 250 through universal joint, the other end of second extension shaft group 280 is connected steering gear 260 through universal joint. The output end of steering assist device 250 is connected with the input end of steering gear 260 through second extension shaft group 280, forms second section steering transmission shaft, ensures that the steering instruction of first section steering transmission shaft transmission can be smoothly transmitted to steering gear 260 after the reinforcement of steering assist device 250, guarantees the accurate transmission and execution of steering instruction. Specifically, in the embodiment, second extension shaft group 280 includes second driven fork 281 and second driving shaft fork 282, second driven fork 281 is connected steering assist device 250 through third cross shaft 293;The output end of steering assist device 250 is equipped with shaft fork part, and the shaft fork part of the output end of steering assist device 250 is connected with second driven fork 281 through third cross shaft 293, forms cross shaft universal joint connecting structure, so that the steering action transmitted by steering wheel is transmitted to second driven fork 281 through third cross shaft 293 after steering assist device 250, drives second driven fork 281 to rotate, and the shaft body part of second driving shaft fork 282 is rigidly connected with second driven fork 281, to transmit the steering action of second driven fork 281 to steering gear 260 through fourth cross shaft 294, and the input end of steering gear 260 is equipped with shaft fork part;The shaft fork part of the input end of steering gear 260 is connected with second driven fork 281 through fourth cross shaft, forms cross shaft universal joint connecting structure, and the transmission of steering action is completed. In the embodiment, the output end of steering assist device 250 and the input end of steering gear 260 are directly connected through universal joint transmission structure by using second extension shaft group 280 and third cross shaft 293 and fourth cross shaft 294 for transmission, so as to optimize the transmission angle gap and ensure the smoothness of transmission. Specifically, the angle A4' of the steering assist device 250 and steering gear 260 connected by cross shaft transmission in the traditional transmission design is split into the transmission angle A3 of second driven fork 281 and steering assist device 250 and the transmission angle A4 of second driving shaft fork 282 and the input end of steering gear 260, further reduces the difference of output angle, makes transmission more smooth, reduces the moment fluctuation, so as to provide better steering feeling, and prolongs the service life of cross shaft universal joint.

[0047] Please refer to Figure 5In the utility model steering structure one implementation, the second spline part 283 is arranged on the second driving axle fork 282, the second driven fork 281 is embraced and connected with the second spline part 283, specifically, the second spline part 283 is arranged on the shaft body part away from the one end of the shaft fork part of the second driving axle fork 282, the spline hole matched with the second spline part 283 is also arranged on the second driven fork 281, and the locking bolt is arranged on the second driven fork 281 and used for mounting the second driven fork 281 embraced on the second spline part 283.The second spline part 283 is arranged to reliably transmit the torque outputted by the output end of the steering assist device 250 received by the second driven fork 281 to the second driving axle fork 282, and then to the input end of the steering gear 260, so that the high-efficiency stable and reliable power transmission effect is ensured.

[0048] Please refer to Figure 6 In the utility model steering structure one implementation, the steering shaft 240 is fixedly connected with the first shell 220 through the rotating bearing 241, so that the steering shaft 240 is rotatably installed on the first shell 220.Specifically, the steering shaft 240 penetrates the hollow cavity of the first shell 220, the one end of the steering shaft 240 away from the support 210 extends out of the first shell 220 and is fixedly installed with the steering wheel, the rotation of the steering wheel drives the steering shaft 240 to rotate in the first shell 220, and the other end of the steering shaft 240 also extends out of the first shell 220 and is provided with the shaft fork part, and the shaft fork part of the first extension shaft group 270 is connected through the first cross shaft 291, so that the rotating motion is transmitted, the rotating bearing 241 is arranged on the shaft body of the steering shaft 240 in the hollow part of the first shell 220, and the rotating bearing 241 is arranged between the steering shaft 240 and the first shell 220 in the form of press-fit connection, so that the steering shaft 240 and the first shell 220 are connected in the form of press-fit connection, which not only ensures the stability of the connection, but also can bear higher torque and load, and can better adapt to installation error and reduce assembly difficulty.The number of rotating bearings 241 is not limited, as long as the installation connection between the steering shaft 240 and the first shell 220 is met, and in the embodiment, the number of rotating bearings 241 is two, one of which is installed on the upper end of the first shell 220, located in the hollow cavity of the upper end of the first shell 220 and sleeved on the shaft body of the steering shaft 240, and the other is installed on the lower end of the first shell 220, located in the hollow cavity of the lower end of the first shell 220 and sleeved on the shaft body of the steering shaft 240, so that the stable connection between the steering shaft 240 and the first shell 220 is ensured.

[0049] The utility model discloses second aspect still provide a kind of all terrain vehicle, the all terrain vehicle includes vehicle body 10 and is installed on the steering structure 200 of vehicle body 10, steering structure 200 as the steering system of all terrain vehicle, the rotation of vehicle steering wheel 20 is controlled by operation steering wheel, and then the steering of vehicle is realized.The steering structure 200 includes support 210, first shell 220, adjusting device 230, steering shaft 240 and steering assist device 250;The support 210 is used to connect the vehicle body 10 of vehicle, support 210 is simultaneously used to integratedly install first shell 220, adjusting device 230 and steering assist device 250;First shell 220 rotationally connects the support 210, adjusting device 230 includes second shell 231 and movable adjusting end 232, one of second shell 231 and the movable adjusting end 232 is rotationally connected with the support 210, another of the second shell 231 and the movable adjusting end 232 is rotationally connected with the first shell 220;Under the pneumatic adjusting effect of adjusting device 230, drive first shell 220 relative rotation movement with support 210, and then drive steering shaft 240 rotation movement, to realize the adjustment of steering wheel angle and height;One end of steering shaft 240 is connected with steering wheel;The other end of steering shaft 240 passes through first shell 220 and is connected with steering assist device 250 through universal joint.Steering assist device 250 is integratedly installed in support 210, and is connected with steering gear 260 through universal joint;Steering command is transmitted to the input end of steering assist device 250 through steering shaft 240, is transmitted to steering gear 260 after steering assist device 250 steering assist, and then is transmitted to wheel system, realizes the steering of the steering wheel 20 of wheel system.It needs to be explained that, steering wheel 20 can be the front steering wheel of vehicle, can also be rear steering wheel.Specifically, in the embodiment, steering gear 260 is connected with front steering wheel, realizes the steering operation of front steering wheel.

[0050] It needs to be explained that, the all terrain vehicle of the utility model can also include the component outside the steering structure structure of the utility model, for example, suspension system, power system, electrical system and the conventional component of existing all terrain vehicle such as body and shell, which conventional component can be designed according to existing technical scheme, so here is not described in detail, and is not limited.

[0051] In the turning structure, the first shell, the adjusting device and the steering assisting device in the steering system are integrated, the first shell, the adjusting device and the steering assisting device are connected together through the support, the respective connection of the first shell, the adjusting device and the steering assisting device with the vehicle body through other parts is avoided, the number of parts is reduced, the compactness of the overall structure and the precision control of manufacturing and assembly are improved, the assembly difficulty is reduced, and the mounting process between the vehicle body is simplified, so that the technical problems of low integration of parts, poor compactness of the overall structure and large assembly difficulty in the steering device of the traditional all-terrain vehicle are improved.

[0052] The above embodiment only exemplarily illustrates the principle and effect of the utility model, and is not used to limit the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and category of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A steering structure for connecting a vehicle's steering wheel and steering gear, characterized in that, include: A bracket for connecting to the vehicle body; The first housing is rotatably connected to the bracket; The adjustment device includes a second housing and a movable adjustment end, one of the second housing and the movable adjustment end being rotatably connected to the bracket, and the other of the second housing and the movable adjustment end being rotatably connected to the first housing; A power steering device is mounted on the bracket and connected to the steering gear via a universal joint; A steering shaft, one end of which is connected to the steering wheel; the other end of which passes through the first housing and is connected to the power steering device via a universal joint.

2. The steering structure according to claim 1, characterized in that, The steering structure also includes a first extension shaft assembly, one end of which is connected to the steering shaft via a universal joint, and the other end of which is connected to the steering assist device via a universal joint.

3. The steering structure according to claim 2, characterized in that, The first extension shaft group includes: A first driven shaft fork, the first driven shaft fork being connected to the steering shaft via a first cross shaft; The first driving fork is installed at one end of the first driven fork and is connected to the steering assist device via the second cross shaft.

4. The steering structure according to claim 3, characterized in that, The first driven shaft fork is provided with a first spline portion, and the first driving fork clamp is connected to the first spline portion.

5. The steering structure according to claim 2, characterized in that, The first extension shaft assembly is connected to the steering shaft via a first cross shaft, the center of which is located on the axial direction of the rotatable connection between the first housing and the bracket.

6. The steering structure according to claim 2, characterized in that, The bracket includes A base plate is fixedly connected to the power steering device, and the first extension shaft assembly is located on the side of the base plate opposite to the power steering device. The first side plate is fixedly connected to the base plate and is located on the side of the base plate opposite to the steering assist device; the first side plate is connected to the vehicle body; The first opening is formed on the first side plate and faces the connection between the first extension shaft assembly and the steering assist device.

7. The steering structure according to claim 1, characterized in that, The support structure is a one-piece cast structure.

8. The steering structure according to claim 1, characterized in that, The steering structure also includes a second extension shaft assembly, one end of which is connected to the steering assist device via a universal joint, and the other end of which is connected to the steering gear via a universal joint.

9. The steering structure according to claim 8, characterized in that, The second extension shaft assembly includes: The second driven fork is connected to the steering assist device via a third cross shaft; The second drive shaft fork is fixedly connected to the second driven fork and connected to the steering gear via the fourth cross shaft.

10. The steering structure according to claim 9, characterized in that, The second drive shaft fork is provided with a second spline portion, and the second driven fork clamp is connected to the second spline portion.

11. The steering structure according to claim 1, characterized in that, The steering shaft is fixedly connected to the first housing by a rotating bearing press-fitting.

12. An all-terrain vehicle, characterized in that, It includes a steering wheel, a steering gear, and a steering structure, wherein the steering structure connects the steering wheel and the steering gear; The steering structure includes: A bracket for connecting to the vehicle body; The first housing is rotatably connected to the bracket; The adjustment device includes a second housing and a movable adjustment end, one of the second housing and the movable adjustment end being rotatably connected to the bracket, and the other of the second housing and the movable adjustment end being rotatably connected to the first housing; A power steering device is mounted on the bracket and connected to the steering gear via a universal joint; A steering shaft, one end of which is connected to the steering wheel; the other end of which passes through the first housing and is connected to the power steering device via a universal joint.

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