WO2020253183A1

WO2020253183A1 - All-terrain vehicle and crankcase thereof

Info

Publication number: WO2020253183A1
Application number: PCT/CN2019/127464
Authority: WO
Inventors: 李利
Original assignee: 北京致行慕远科技有限公司
Priority date: 2019-06-21
Filing date: 2019-12-23
Publication date: 2020-12-24
Also published as: CN210317509U

Abstract

A crankcase (100), comprising: a left case body (10), the left case body (10) being provided with an air inlet (11) and a left cooling air duct (12), the air inlet (11) being in communication with the left cooling air duct (12); a right case body (30), the right case body (30) being arranged opposite to the left case body (10), and the right case body (30) being provided with a right cooling air duct (31), the right cooling air duct (31) being in communication with the left cooling air duct (12); and a right case cover (50), the right case cover (50) being arranged on the right side of the right case body (30), and the right cooling air duct (31) surrounding the right case cover (50). Also disclosed is an all-terrain vehicle.

Description

All-terrain vehicle and its crankcase

Cross-reference of related patents

This disclosure is based on a Chinese patent application with application number 201920941396.8, the filing date of which is June 21, 2019, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated by reference into this disclosure.

Technical field

The present disclosure relates to the field of vehicle technology, in particular to an all-terrain vehicle and its crankcase.

Background technique

At present, the crankcase of the general ATV engine has been designed to meet the basic functions, but it ignores some details of the treatment, resulting in some unsatisfactory functions. The main manifestation is that the curing design structure is too limited and the body heat dissipation is poor. Affect engine life and performance.

Summary of the invention

The present disclosure aims to solve at least one of the technical problems existing in the prior art. To this end, an objective of the present disclosure is to provide a crankcase for an all-terrain vehicle, which has good heat dissipation performance, can improve engine performance, and prolong the service life of the engine.

The present disclosure further proposes an all-terrain vehicle.

The crankcase of the all-terrain vehicle according to the present disclosure includes: a left box body, the left box body is provided with an air inlet and a left cooling air duct, the air inlet and the left cooling air duct are connected; the right box body, The right box body is arranged opposite to the left box body, the right box body is provided with a right cooling air duct, the right cooling air duct and the left cooling air duct are connected; the right box cover, the right box cover is provided On the right side of the right box body, the right cooling air duct surrounds the right box cover.

Therefore, by providing the cooling air duct, the internal heat of the engine can be effectively taken away, the engine can be kept in a reasonable operating temperature range, the engine performance can be improved, and the service life of the engine can be prolonged.

In some examples of the present disclosure, the right cooling air duct includes: a communicating section and a surrounding section, the communicating section is located above and communicating with the surrounding section, and the communicating section is connected to the left cooling air duct Relatively arranged and connected, the wrapping section surrounds the right box cover.

In some examples of the present disclosure, the left box is further provided with a left cooling water channel, the right box is also provided with a right cooling water channel, the left cooling water channel and the right cooling water channel are connected, and the left cooling air The channel is located above and behind the left cooling water channel, and the air inlet is vertically arranged.

In some examples of the present disclosure, the left box has a left cylinder assembly surface, the left cooling water channel extends from bottom to top to the left cylinder assembly surface; the right box has a right cylinder assembly surface, the right The cooling water channel extends from bottom to top to the right cylinder assembly surface.

In some examples of the present disclosure, the left case, the right case, and the right case cover are all provided with a crankshaft hole, and a bearing shell is integrated in the crankshaft hole.

In some examples of the present disclosure, the right housing is provided with a right balance shaft hole, a right main shaft hole, a right counter shaft hole, a right reverse gear shaft hole, a driven bevel gear shaft hole and a drive shaft hole, and a right balance shaft The hole is located at the front and upper part of the right countershaft hole, the right main shaft hole is located at the rear and upper part of the right countershaft hole, and the right reverse gear axle hole is located at the rear and lower part of the right countershaft hole with an axial direction In the left and right direction, the transmission shaft hole is located at the front and bottom of the right counter shaft hole and the axial direction is the front and rear direction.

In some examples of the present disclosure, the left housing is provided with a left balance shaft hole, a left countershaft hole, a left reverse gear intermediate wheel shaft hole, and a driving bevel gear shaft hole, and the left balance shaft hole is located on the left countershaft. The left countershaft hole is opposite to the right countershaft hole, the left reverse gear intermediate wheel shaft hole is located behind the left countershaft hole, and the driving bevel gear shaft hole is located Below the left countershaft hole.

In some examples of the present disclosure, the left case is further provided with a starter motor hole, the starter motor hole is located in front of the air inlet, and the right case is also provided with a gear shift cam assembly hole, the gear shift cam The assembly hole is located behind the air inlet.

In some examples of the present disclosure, the left case has a left cylinder assembly surface, the right case has a right cylinder assembly surface, and the center axis corresponding to the left cylinder assembly surface and the right cylinder assembly surface is aligned with the The angle between the horizontal axes of the crankcase is 45°.

In some examples of the present disclosure, the left case has a left cylinder assembly surface, the right case has a right cylinder assembly surface, the left cylinder assembly surface and the right cylinder assembly surface constitute a cylinder assembly surface, the The angle between the cylinder assembly surface and the horizontal plane is 45°.

The all-terrain vehicle according to the present disclosure includes: a cylinder; the crankcase of the all-terrain vehicle, the cylinder is assembled diagonally above the crankcase.

The additional aspects and advantages of the present disclosure will be partially given in the following description, and some will become obvious from the following description, or be understood through the practice of the present disclosure.

Description of the drawings

The above and/or additional aspects and advantages of the present disclosure will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

Fig. 1 is a first perspective view of a crankcase of an all-terrain vehicle according to an embodiment of the present disclosure;

2 is a second perspective view of the crankcase of the all-terrain vehicle according to the embodiment of the present disclosure;

Fig. 3 is a first angle exploded view of the crankcase of the all-terrain vehicle according to an embodiment of the present disclosure;

Fig. 4 is a second angle exploded view of the crankcase of the all-terrain vehicle according to an embodiment of the present disclosure.

Reference signs:

Crankcase 100;

Left housing 10; air inlet 11; left cooling air duct 12; left cooling water duct 13; left cylinder assembly surface 14; left crankshaft hole 15; left bearing 16; left balance shaft hole 17; left countershaft hole 18; left reverse gear Intermediate wheel shaft hole 19; driving bevel gear shaft hole 20; starting motor hole 21;

Right box 30; right cooling air duct 31; connecting section 311; surrounding section 312; right cooling water channel 32; right cylinder assembly surface 33; right crankshaft hole 34; right bearing 35; right balance shaft hole 36; right main shaft hole 37 ; Right countershaft hole 38; right reverse gear intermediate wheel shaft hole 39; driven bevel gear shaft hole 40; drive shaft hole 41; shift cam assembly hole 42;

The right box cover 50.

Detailed ways

The embodiments of the present disclosure are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present disclosure are described in detail below.

The following describes a crankcase 100 of an all-terrain vehicle according to an embodiment of the present disclosure with reference to FIGS. 1 to 4, and the crankcase 100 is a part of the engine.

As shown in FIGS. 1 and 2, the crankcase 100 of the all-terrain vehicle according to the embodiment of the present disclosure may include: a left box body 10, a right box body 30, and a right box cover 50, and the left box body 10 and the right box body 30 are opposite to each other. It is provided that the two can be fixedly connected by fasteners, and a sealing ring or sealant can be filled between the two to ensure the sealing effect of the crankcase 100. The right box cover 50 is provided on the right side of the right box body 30. By reasonably arranging the above three components, the crankcase 100 can be made simple and reliable in structure, with few parts and easy to assemble.

3 and 4, the left box 10 is provided with an air inlet 11 and a left cooling air duct 12, the air inlet 11 and the left cooling air duct 12 are connected, the right box 30 is provided with a right cooling air duct 31, and the right cooling The air duct 31 communicates with the left cooling air duct 12, wherein the right cooling air duct 31 surrounds the right tank cover 50. In other words, the crankcase 100 can supply cold air to the inside of the crankcase 100 through the air inlet 11, and the cold air can flow in the left cooling air duct 12 and the right cooling air duct 31, so as to effectively take away the internal heat of the crankcase 100, which can make The engine is in a reasonable operating temperature range. Moreover, since the right cooling air duct 31 surrounds the right tank cover 50, the covering area is larger and the cooling effect is better.

3 and 4, the left tank 10 is provided with a left cooling water channel 13, the right tank 30 is provided with a right cooling water channel 32, the right cooling water channel 32 communicates with the left cooling water channel 13, the cooling water can be cooled on the left The water passage 13 and the right cooling water passage 32 flow, and the cooling water can also effectively take away the internal heat of the crankcase 100, so that the engine is in a reasonable operating temperature range.

Optionally, as shown in FIG. 3 and FIG. 4, the left cooling air duct 12 is located above and behind the left cooling water duct 13, and the air inlet 11 is vertically arranged. Therefore, by arranging the left cooling air duct 12 and the left cooling water duct 13 at different positions, the two can be supplemented with each other, and the internal heat of the engine can be better taken away, and the left cooling air duct 12 is arranged in this way. It is reasonable and will not affect the arrangement of the internal components of the crankcase 100, and is also beneficial to the arrangement of the air inlet 11.

3 and 4, the right cooling air duct 31 includes a communicating section 311 and a surrounding section 312. The communicating section 311 is located above the surrounding section 312, and the communicating section 311 is in communication with the surrounding section 312. The section 311 is arranged opposite to and communicated with the left cooling air duct 12, and the wrapping section 312 surrounds the right tank cover 50. The connecting section 311 can play the role of connecting the left cooling air duct 12 and the wrapping section 312, so that the cold air at the air inlet 11 can enter the wrapping section 312 area, and effectively cooling the crankcase 100 in the wrapping section 312 area The internal components of the crankcase 100 take away the internal heat of the crankcase 100, so that the engine can be in a reasonable operating temperature range, and the performance of the engine can be improved. The right case cover 50 corresponds to a crankshaft hole and a vent hole, so that the wrapping section 312 can effectively cool the crankshaft.

Specifically, as shown in FIGS. 3 and 4, the left box 10 has a left cylinder assembly surface 14, the left cooling water channel 13 extends from bottom to top to the left cylinder assembly surface 14, and the right box 30 has a right cylinder assembly surface 33, The cooling water passage 32 extends from bottom to top to the right cylinder assembly surface 33. Among them, the cylinder is assembled on the left cylinder assembly surface 14 and the right cylinder assembly surface 33, and the cylinder is provided with a cooling water channel corresponding to the cylinder. By connecting the crankcase 100 with the cooling water channel in the cylinder, the cooling effect at the cylinder can be ensured. The overall cooling effect of the engine is good, and there is no need to connect the water supply runner separately to the cylinder.

Wherein, the included angle between the central axis corresponding to the left cylinder assembly surface 14 and the right cylinder assembly surface 33 and the horizontal axis of the crankcase 100 is 45°. The left cylinder assembly surface 14 and the right cylinder assembly surface 33 provided in this way can better match the cylinder lower assembly surface, can improve the installation efficiency of the cylinder and the crankcase 100, and can rationalize the overall structure of the engine.

And, the left cylinder assembly surface 14 and the right cylinder assembly surface 33 jointly constitute a cylinder assembly surface, and the included angle between the cylinder assembly surface and the horizontal plane is 45°. The cylinder assembly surface provided in this way can facilitate the assembly of the lower assembly surface of the cylinder, can further facilitate the assembly of the cylinder and the crankcase 100, and can make the overall structural layout of the engine more reasonable.

Optionally, as shown in FIG. 3, the left box body 10, the right box body 30, and the right box cover 50 are all provided with crankshaft holes, and a bearing bush is integrated in the crankshaft hole. That is, the left case body 10 is provided with a left crankshaft hole 15, the right case body 30 and the right case cover 50 are provided with a right crankshaft hole 34, the left crankshaft hole 15 is correspondingly provided with a left bearing shell 16, and the right crankshaft hole 34 is correspondingly provided There is a right bearing 35. By integrating the bearing bushes on the box body and the box cover, the crankcase 100 can be highly integrated, with good integrity and high structural reliability.

In addition, the crankcase 100 also integrates a gearbox function, which will be described in detail below.

As shown in Figures 3 and 4, the right box 30 is provided with a right balance shaft hole 36, a right main shaft hole 37, a right counter shaft hole 38, a right reverse gear shaft hole 39, a driven bevel gear shaft hole 40 and a drive shaft. Hole 41, the right balance shaft hole 36 is located at the upper front of the right countershaft hole 38, the right main shaft hole 37 is located at the rear and upper rear of the right countershaft hole 38, and the right reverse gear shaft hole 39 is located at the rear and lower rear of the right countershaft hole 38. The direction is the left and right direction, the transmission shaft hole 41 is located at the front and bottom of the right counter shaft hole 38 and the axial direction is the front and rear direction. The left box body 10 is provided with a left balance shaft hole 17, a left counter shaft hole 18, a left reverse gear shaft hole 19, and a driving bevel gear shaft hole 20. The left balance shaft hole 17 is located in front and above the left counter shaft hole 18. The shaft hole 18 is arranged opposite to the right counter shaft hole 38, the left reverse gear intermediate wheel shaft hole 19 is located behind the left counter shaft hole 18, and the driving bevel gear shaft hole 20 is located below the left counter shaft hole 18.

Among them, the left balance shaft hole 17 and the right balance shaft hole 36 are arranged opposite to each other, and both are used to install the balance shaft. The balance shaft can cooperate with the crankshaft. Both can improve the working stability of the engine and the reliability of power transmission. The right main shaft hole 37 is used to install the main shaft of the gearbox, the left counter shaft hole 18 and the right counter shaft hole 38 are used to install the counter shaft of the gearbox, the left reverse gear shaft hole 19 and the right reverse gear shaft hole 39 are used for installation Reverse gear shaft, driving bevel gear shaft hole 20 is used to install driving bevel gear shaft, driving bevel gear shaft is installed with driving bevel gear, driven bevel gear shaft hole 40 is used to install driven bevel gear shaft, driven bevel gear shaft A driven bevel gear is installed.

Therefore, the crankcase 100 is integrated with the function of the gearbox, and each shaft in the gearbox can be installed between the left case 10 and the right case 30, so that the crankcase 100 can be highly integrated, well integrated, and assembled. efficient.

Furthermore, as shown in FIG. 4, the left box body 10 is also provided with a starter motor hole 21, and the starter motor hole 21 is located in front of the air inlet 11. The starter motor can be installed at the starter motor hole 21, so that the crankcase 100 can also play the role of installing the starter motor, which can further improve the integration of the engine, and can make the all-terrain vehicle compact and small. Moreover, the starter motor and the air inlet 11 do not interfere with each other, which will not affect the air inlet effect of the air inlet 11, thereby ensuring that the overall structure of the crankcase 100 is reasonably designed.

As shown in FIG. 4, the right casing 30 is also provided with a shift cam assembly hole 42, and the shift cam assembly hole 42 is located at the rear and lower part of the air inlet 11. By reasonably arranging the position of the shift cam, the overall structure of the crankcase 100 can be reasonably designed and the structure is compact.

The all-terrain vehicle according to an embodiment of the present disclosure includes an engine. The engine includes a cylinder and the crankcase 100 of the above-mentioned embodiment, and the cylinder is assembled diagonally above the crankcase 100.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples", or "some examples" etc. means to incorporate the implementation The specific features, structures, materials or characteristics described by the examples or examples are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above-mentioned terms does not necessarily refer to the same embodiment or example.

Although the embodiments of the present disclosure have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principles and principles of the present disclosure. The scope of the present disclosure is defined by the claims and their equivalents.

Claims

A crankcase of an all-terrain vehicle, characterized in that it comprises:

A left box body, the left box body is provided with an air inlet and a left cooling air duct, and the air inlet is in communication with the left cooling air duct;

A right box, the right box is arranged opposite to the left box, the right box is provided with a right cooling air duct, and the right cooling air duct is in communication with the left cooling air duct;

The right box cover is arranged on the right side of the right box body, wherein the right cooling air duct surrounds the right box cover.
The crankcase of the all-terrain vehicle according to claim 1, wherein the right cooling air duct includes a communicating section and a surrounding section, the communicating section is located above the surrounding section and communicates with it, so The communicating section is arranged opposite to and communicated with the left cooling air duct, and the wrapping section surrounds the right tank cover.
The crankcase of an all-terrain vehicle according to claim 1, wherein the left case is further provided with a left cooling water channel, the right case is also provided with a right cooling water channel, the left cooling water channel and the The right cooling water channel is connected, the left cooling air channel is located above and behind the left cooling water channel, and the air inlet is vertically arranged.
The crankcase of an all-terrain vehicle according to claim 3, wherein the left case has a left cylinder assembly surface, and the left cooling water channel extends from bottom to top to the left cylinder assembly surface;

The right box has a right cylinder assembling surface, and the right cooling water channel extends from bottom to top to the right cylinder assembling surface.
The crankcase of an all-terrain vehicle according to claim 1, wherein the left case, the right case, and the right case cover are all provided with a crankshaft hole, and a bearing bush is integrated in the crankshaft hole.
The crankcase of the all-terrain vehicle according to claim 1, wherein the right case body is provided with a right balance shaft hole, a right main shaft hole, a right counter shaft hole, a right reverse gear shaft hole, and a driven bevel gear. The shaft hole and the transmission shaft hole, the right balance shaft hole is located above and in front of the right counter shaft hole, the right main shaft hole is located behind and above the right counter shaft hole, and the right reverse gear intermediate wheel shaft hole is located at The right countershaft hole is located at the bottom and rear and the axial direction is left and right, and the transmission shaft hole is located at the front and bottom of the right countershaft hole with the axial direction being the front and rear direction.
The crankcase of an all-terrain vehicle according to claim 6, wherein the left case body is provided with a left balance shaft hole, a left counter shaft hole, a left reverse gear intermediate wheel shaft hole and a driving bevel gear shaft hole, and The left balance shaft hole is located above and in front of the left secondary shaft hole, the left secondary shaft hole is arranged opposite to the right secondary shaft hole, and the left reverse gear intermediate wheel shaft hole is located behind and below the left secondary shaft hole, The driving bevel gear shaft hole is located below the left counter shaft hole.
The crankcase of the all-terrain vehicle according to claim 1, wherein the left box body is further provided with a starter motor hole, the starter motor hole is located in front of the air inlet, and the right box body is also opened There is a shift cam assembly hole, and the shift cam assembly hole is located behind the air inlet.
The crankcase of an all-terrain vehicle according to claim 1, wherein the left case has a left cylinder assembly surface, the right case has a right cylinder assembly surface, the left cylinder assembly surface and the right cylinder assembly surface The included angle between the central axis corresponding to the cylinder assembly surface and the horizontal axis of the crankcase is 45°.
The crankcase of an all-terrain vehicle according to claim 1, wherein the left case has a left cylinder assembly surface, the right case has a right cylinder assembly surface, the left cylinder assembly surface and the right cylinder assembly surface The cylinder assembly surface constitutes the cylinder assembly surface, and the included angle between the cylinder assembly surface and the horizontal plane is 45°.
An all-terrain vehicle, characterized in that it comprises:

cylinder;

The crankcase of an all-terrain vehicle according to any one of claims 1-10, wherein the cylinder is assembled obliquely above the crankcase.