All-terrain vehicle

Abstract

The utility model discloses an all-terrain vehicle which comprises a speed change assembly, and the speed change assembly comprises a speed changer. The decelerator includes an input shaft assembly including an input shaft, a front bearing, a rear bearing, and a helical gear. The input shaft assembly comprises a pressing plate making contact with the bevel gear, when the bevel gear is in a first stress state, axial force, in the first direction, generated by the bevel gear acts on the front bearing through the input shaft, the front bearing bears the axial force, in the first direction, generated by the bevel gear, and the rear bearing only bears radial force generated by the bevel gear. And when the bevel gear is in a second stress state, the axial force in the second direction generated by the bevel gear acts on the pressing plate through the front bearing, the pressing plate bears the axial force in the second direction generated by the bevel gear, and the rear bearing only bears the radial force generated by the bevel gear. Through the arrangement, the size of the rear bearing is reduced, so that the space in the shell is increased, the speed reducer is arranged in the shell, and then the working efficiency of the speed reducer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to an all-terrain vehicle. Background Art

[0002] The all-terrain vehicle has a built-in reducer and differential. The reducer is arranged in the reduction box housing, and the reducer and the differential are connected. In order to improve the four-wheel drive performance of the all-terrain vehicle, a pair of bevel gear pairs and a transfer shaft will be added to the reduction box housing. The transfer shaft is connected to the traveling component, the bevel gear pair is connected to the reducer, and the differential is also connected to the traveling component, so that both ends of the differential and the transfer shaft can output power to the traveling component of the all-terrain vehicle, and then the traveling component of the all-terrain vehicle can drive the all-terrain vehicle forward or backward.

[0003] In the prior art, ball bearings are usually used for the input shaft inside the reducer. Ball bearings have poor load-bearing capacity, so large-sized ball bearings are generally selected to improve the load-bearing capacity of the bearings while taking into account the speed requirements. In order to meet the four-wheel drive performance, the all-terrain vehicle reducer adds a pair of bevel gear pairs and a transfer shaft to the reducer housing. However, the setting of a pair of bevel gear pairs and a transfer shaft will lead to insufficient internal space, so that the shaft system of the reducer cannot be set in the reducer housing, thereby reducing the working efficiency of the reducer. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the purpose of the utility model is to provide an all-terrain vehicle, the reducer of the all-terrain vehicle has high working efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An all-terrain vehicle includes a frame, a travel assembly, a body covering, a power assembly and a speed change assembly. The travel assembly is arranged on the lower side of the frame. The body covering is arranged on the frame. The power assembly is at least partially arranged on the frame. The speed change assembly includes a reducer, which is transmission-connected to the power assembly. The reducer includes an input shaft assembly, which includes an input shaft, a front bearing, a rear bearing and a helical gear. The input shaft is connected to the helical gear, the front bearing is transmission-connected to the input shaft, the rear bearing is also transmission-connected to the input shaft, and the input shaft is connected to the power assembly. The input shaft assembly also includes a pressure plate, which is arranged between the helical gear and the front bearing. The pressure plate is in contact with the helical gear. When the helical gear is in a first stress state, the helical gear generates a radial force and an axial force in a first direction. The axial force in the first direction acts on the front bearing through the input shaft, and the front bearing bears the axial force in the first direction generated by the helical gear, and the rear bearing only bears the radial force; when the helical gear is in a second stress state, the helical gear generates a radial force and an axial force in a second direction, and the second direction is opposite to the first direction. The axial force in the second direction acts on the pressure plate through the front bearing, and the pressure plate bears the axial force in the second direction generated by the helical gear, and the rear bearing only bears the radial force.

[0007] Further, a plane perpendicular to the axial direction of the input shaft is defined as a projection plane, the projection of the pressure plate on the projection plane is a first projection plane, the projection of the front bearing on the projection plane is a second projection plane, and the first projection plane at least partially overlaps with the second projection plane.

[0008] Furthermore, the thickness of the pressure plate along the width direction of the all-terrain vehicle is set to be greater than or equal to 4.8 mm and less than or equal to 7.2 mm.

[0009] Furthermore, the inner diameter of the pressure plate is larger than the outer diameter of the tilted bearing.

[0010] Furthermore, the pressing plate is configured to be in a half-moon shape.

[0011] Furthermore, the speed change assembly includes a housing, the housing includes a front housing, the pressure plate includes a connecting hole, the fastener passes through the connecting hole and is connected to the front housing, and the reducer is at least partially disposed in the housing.

[0012] Furthermore, the housing also includes a rear housing, which at least partially extends along the direction of the bevel gear to form a housing seat hole, and the housing seat hole is surrounded by a receiving space. The input shaft assembly passes through the housing seat hole, and the rear bearing is at least partially arranged in the receiving space.

[0013] Furthermore, the inner contour of the housing seat hole is substantially consistent with the outer contour of the rear bearing.

[0014] Furthermore, the wall thickness of the housing seat hole is set to be greater than or equal to 4.9 mm and less than or equal to 7.1 mm.

[0015] Furthermore, the wall thickness of the housing seat hole is set to be greater than or equal to 5.5 mm and less than or equal to 6.5 mm.

[0016] A pressure plate is arranged between the helical gear and the front bearing on the reducer of the above-mentioned all-terrain vehicle, so that the axial force generated by the helical gear on the rear bearing is reduced, thereby reducing the size of the rear bearing and increasing the available space in the shell, so that the shell can be arranged in the shell, thereby improving the working efficiency of the reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a partial structural schematic diagram of the all-terrain vehicle of the present utility model.

[0018] Figure 2 It is a partial structural schematic diagram of the input shaft assembly of the all-terrain vehicle of the present utility model.

[0019] Figure 3 It is a structural schematic diagram of the pressure plate of the all-terrain vehicle of the present utility model.

[0020] Figure 4 It is a partial structural schematic diagram of the housing and input shaft assembly of the all-terrain vehicle of the present utility model.

[0021] Figure 5 It is a partial structural schematic diagram of the rear housing of the all-terrain vehicle of the present invention. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the specific implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the utility model.

[0023] like Figures 1 to 4As shown, an all-terrain vehicle 100 includes a frame 11, a travel assembly 12, a body cover 13, a power assembly 14 and a speed change assembly 15. The travel assembly 12 is arranged on the lower side of the frame 11. The body cover 13 is arranged on the frame 11. The power assembly 14 is at least partially arranged on the frame 11. The speed change assembly 15 includes a reducer 151 and a housing 152. The housing 152 is used to protect the parts of the reducer 151. The reducer 151 is transmission-connected to the power assembly 14. The reducer 151 is at least partially arranged in the housing 152, thereby improving the working stability of the reducer 151. Specifically, the reducer 151 includes an input shaft assembly 1511, and the input shaft assembly 1511 includes an input shaft 1511a, a front bearing 1511b, a rear bearing 1511c and a bevel gear 1511d. The input shaft 1511a is connected to the bevel gear 1511d, the front bearing 1511b is connected to the input shaft 1511a, the rear bearing 1511c is also connected to the input shaft 1511a, and the input shaft 1511a is connected to the power assembly 14, so that the power assembly 14 can drive the input shaft 1511a, and the input shaft 1511a drives the bevel gear 1511d, the front bearing 1511b and the rear bearing 1511c to rotate.

[0024] As an implementation method, the input shaft assembly 1511 further includes a pressure plate 1511e, which is disposed between the helical gear 1511d and the front bearing 1511b. The pressure plate 1511e contacts the helical gear 1511d. When the helical gear 1511d is in a first force-bearing state, the helical gear 1511d generates a radial force and an axial force in a first direction. The axial force in the first direction acts on the front bearing 1511b through the input shaft 1511, and the front bearing 1511b bears the radial force. The rear bearing 1511c only bears the radial force for the axial force in the first direction generated by the gear 1511d; when the helical gear 1511d is in the second force state, the helical gear 1511d generates a radial force and an axial force in the second direction, the second direction is opposite to the first direction, and the axial force in the second direction acts on the pressure plate 1511e through the front bearing 1511b, and the pressure plate 1511e bears the axial force in the second direction generated by the helical gear 1511d, and the rear bearing 1511c only bears the radial force. Through the above arrangement, since the axial force borne by the rear bearing 1511c is reduced, the size of the rear bearing 1511c can be reduced, that is, the outer diameter of the rear bearing 1511c can be reduced to increase the available space in the housing 152, so that the components of the reducer 151 can be arranged in the housing 152. At the same time, the reduction in the size of the rear bearing 1511c can reduce the interference between the input shaft assembly 1511 and the components of the reducer 151, thereby improving the working efficiency of the input shaft assembly 1511, and thus improving the working efficiency of the reducer 151. It should be noted that the first direction refers to the clockwise rotation of the bevel gear 1511d around the axis of the input shaft 1511a; the second direction refers to the counterclockwise rotation of the bevel gear 1511d around the axis of the input shaft 1511a; the front bearing 1511b and the rear bearing 1511c can be set as ball bearings.

[0025] As an implementation method, a plane perpendicular to the axial direction of the input shaft 1511a is defined as the projection plane 101, the projection of the pressure plate 1511e on the projection plane 101 is the first projection plane, the projection of the front bearing 1511b on the projection plane 101 is the second projection plane, and the first projection plane and the second projection plane at least partially overlap. Through the above arrangement, the pressure plate 1511e can be fully in contact with the front bearing 1511b, so that when the bevel gear 1511d is in the second force state, the axial force of the bevel gear 1511d is transmitted to the pressure plate 1511e, so that the axial force borne by the rear bearing 1511c is minimized, and the size of the rear bearing 1511c can be reduced, so that different types of bearings can be set on the reducer 151, and the working efficiency of the reducer 151 is improved.

[0026] As an implementation, the thickness L1 of the pressing plate 1511e along the width direction of the all-terrain vehicle 100 can be set to be greater than or equal to 4.8 mm and less than or equal to 7.2 mm. Specifically, the thickness L1 of the pressing plate 1511e along the width direction of the all-terrain vehicle 100 can be set to be greater than or equal to 5.4 mm and less than or equal to 6.6 mm. More specifically, the thickness L1 of the pressing plate 1511e along the width direction of the all-terrain vehicle 100 can be set to 6 mm. Through the above-mentioned configuration, it is possible to prevent the thickness L1 of the pressure plate 1511e from being too small, which would cause the axial force that the pressure plate 1511e can withstand to be too small, and to prevent the axial force borne by the rear bearing 1511c from being too large, which would cause the size of the rear bearing 1511c to be unable to be reduced, thereby reducing the size of the rear bearing 1511c to meet the arrangement of different types of bearings of the reducer 151, thereby improving the working efficiency of the reducer 151; it is also possible to prevent the thickness L1 of the pressure plate 1511e from being too large, which would cause interference between the pressure plate 1511e and the input shaft 1511a components, and it is also possible to prevent the input shaft 1511a from interfering with the reducer 151 components due to the pressure plate 1511e being too thick, thereby preventing the input shaft 1511a from being too long along the width direction of the all-terrain vehicle 100 due to the pressure plate 1511e being too thick, thereby increasing the working stability of the reducer 151.

[0027] As an implementation method, the inner diameter of the pressure plate 1511e is larger than the outer diameter of the bevel gear 1511d, so that when the input shaft 1511a drives the bevel gear 1511d to work, interference between the bevel gear 1511d and the pressure plate 1511e can be avoided, thereby improving the working stability of the bevel gear 1511d and further improving the working stability of the reducer 151.

[0028] As an implementation method, the pressure plate 1511e can be set to a half-moon shape, so that when the bevel gear 1511d is in the second force state, not only can the pressure plate 1511e withstand the axial force generated by the bevel gear 1511d, but also the pressure plate 1511e can prevent interference with the components of the reducer 151. Through the above configuration, the working stability of the reducer 151 can be improved, thereby improving the working stability of the all-terrain vehicle 100.

[0029] As an implementation, the speed change assembly 15 includes a housing 152, the housing 152 includes a front housing 152, the pressure plate 1511e includes a connection hole 1511f, and the fastener penetrates the connection hole 1511f to be connected to the front housing 152, so that the pressure plate 1511e can be fixed on the front housing 152, thereby improving the connection stability between the pressure plate 1511e and the front housing 152. Through the above arrangement, when the bevel gear 1511d is in the second force state, the axial force generated by the bevel gear 1511d is transmitted to the pressure plate 1511e by the input shaft 1511a through the front bearing 1511b, so that the axial force borne by the rear bearing 1511c is reduced, so that the size of the rear bearing 1511c can be reduced to meet the arrangement of different types of bearings in the reducer 151, thereby improving the working efficiency of the reducer 151.

[0030] like Figure 2 and Figure 5 As shown, in this embodiment, the housing 152 further includes a rear housing 152, and the rear housing 152 at least partially extends in the direction of the helical gear 1511d to form a housing seat hole 1522a, and the housing seat hole 1522a is surrounded by a receiving space 1522b, and the input shaft assembly 1511 passes through the housing seat hole 1522a, and the rear bearing 1511c is at least partially arranged in the receiving space 1522b. Through the above arrangement, the input shaft assembly 1511 can be arranged in the housing 152, which improves the integration of the speed change assembly 15, and also enables the power provided by the motor assembly 14 to be transmitted to the reducer 151 through the input shaft 1511a, thereby improving the working stability of the reducer 151.

[0031] Specifically, the inner contour of the housing seat hole 1522a is substantially consistent with the outer contour of the rear bearing 1511c, thereby improving the stability of the rear bearing 1511c working in the housing seat hole 1522a. Through the above arrangement, when the pressure plate 1511e is arranged between the bevel gear 1511d and the input shaft 1511a, the size of the rear bearing 1511c is reduced, and the diameter of the inner contour of the housing seat hole 1522a is also reduced, thereby increasing the wall thickness of the housing seat hole 1522a and improving the structural strength of the housing seat hole 1522a.

[0032] More specifically, the wall thickness L2 of the housing seat hole 1522a can be set to be greater than or equal to 4.9 mm and less than or equal to 7.1 mm. Specifically, the wall thickness L2 of the housing seat hole 1522a can be set to be greater than or equal to 5.5 mm and less than or equal to 6.5 mm. More specifically, the wall thickness L2 of the housing seat hole 1522a can also be set to 6 mm. Through the above-mentioned setting, it is possible to prevent the wall thickness L2 of the housing seat hole 1522a from being too thin, which may cause the vibration generated when the reducer 151 works in the housing 152, thereby preventing the fragments generated by the rupture of the housing seat hole 1522a from entering the body of the housing 152 and causing the reducer 151 to work abnormally, thereby improving the working stability of the housing 152. It is also possible to prevent the wall thickness L2 of the housing seat hole 1522a from being too thick, which may cause a waste of raw materials, thereby avoiding reducing the space utilization rate, thereby improving the space utilization rate of the housing 152.

[0033] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An all-terrain vehicle comprising: Frame; A traveling assembly, wherein the traveling assembly is at least partially connected to the vehicle frame; a body covering, the body covering being arranged on the vehicle frame; A power assembly, the power assembly being transmission-connected to the travel assembly; A speed change assembly, the speed change assembly comprising a reducer and a housing, the reducer being transmission-connected to the power assembly; The reducer comprises an input shaft assembly, the input shaft assembly comprises an input shaft, a front bearing, a rear bearing and a helical gear, the input shaft is connected to the helical gear, the front bearing is drivingly connected to the input shaft, the rear bearing is also drivingly connected to the input shaft, and the input shaft is connected to the power assembly; It is characterized in that The input shaft assembly further includes a pressure plate, which is disposed between the helical gear and the front bearing, and is in contact with the helical gear. When the helical gear is in a first force-bearing state, the helical gear generates a radial force and an axial force in a first direction. The axial force in the first direction acts on the front bearing through the input shaft, and the front bearing bears the axial force in the first direction generated by the helical gear, while the rear bearing only bears the radial force. When the helical gear is in the second force state, the helical gear generates radial force and axial force in a second direction, which is opposite to the first direction. The axial force in the second direction acts on the pressure plate through the front bearing, and the pressure plate bears the axial force in the second direction generated by the helical gear, and the rear bearing only bears radial force.

2. The all-terrain vehicle according to claim 1, characterized in that: A plane perpendicular to the axial direction of the input shaft is defined as a projection plane, the projection of the pressure plate on the projection plane is defined as a first projection plane, the projection of the front bearing on the projection plane is defined as a second projection plane, and the first projection plane at least partially overlaps with the second projection plane.

3. The all-terrain vehicle according to claim 1, characterized in that: The thickness of the pressure plate along the width direction of the all-terrain vehicle is greater than or equal to 4.8 mm and less than or equal to 7.2 mm.

4. The all-terrain vehicle according to claim 1, characterized in that: The inner diameter of the pressing plate is greater than the outer diameter of the helical gear.

5. The all-terrain vehicle according to claim 1, characterized in that: The pressing plate is arranged in a half-moon shape.

6. The all-terrain vehicle according to claim 1, characterized in that: The speed change assembly includes a housing, the housing includes a front housing, the pressure plate includes a connecting hole, a fastener passes through the connecting hole and is connected to the front housing, and the reducer is at least partially arranged in the housing.

7. The all-terrain vehicle according to claim 1, characterized in that: The housing also includes a rear housing, which at least partially extends along the direction of the bevel gear to form a housing seat hole, and the housing seat hole is surrounded by a receiving space. The input shaft assembly passes through the housing seat hole, and the rear bearing is at least partially arranged in the receiving space.

8. The all-terrain vehicle according to claim 7, characterized in that: The inner contour of the housing seat hole is substantially consistent with the outer contour of the rear bearing.

9. The all-terrain vehicle according to claim 7, characterized in that: The wall thickness of the housing seat hole is greater than or equal to 4.9 mm and less than or equal to 7.1 mm.

10. The all-terrain vehicle according to claim 9, characterized in that: The wall thickness of the housing seat hole is greater than or equal to 5.5 mm and less than or equal to 6.5 mm.

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