CN214499254U - Crankcase, engine and all-terrain vehicle - Google Patents

Abstract

The utility model discloses a crankcase, engine and all terrain vehicle, be formed with main oil duct, first oil branch way, second oil branch way, bent axle mounting hole and balance shaft mounting hole in the box, the bent axle mounting hole with the balance shaft mounting hole is in the interval sets up in the box, first oil branch way is connected the main oil duct with between the bent axle mounting hole, with to bent axle mounting hole department fuel feeding, the second oil branch way is connected the main oil duct with between the balance shaft mounting hole, with to balance shaft mounting hole department fuel feeding. Through setting up first oil distribution way and second oil distribution way for when the main oil gallery can give the fuel feeding between first oil distribution way and the second oil distribution way respectively, the inner space of rational utilization box, the box that so sets up can be under the prerequisite of guaranteeing overall structure, can make space utilization higher, and the reliability is better.

Description

Crankcase, engine and all-terrain vehicle

Cross Reference to Related Applications

The present application claims priority from chinese patent application No. 202010074483.5 entitled "engine and all terrain vehicle" filed on 22/01/2020.

Technical Field

The utility model belongs to the technical field of the crankcase technique and specifically relates to a crankcase, engine and all terrain vehicle are related to.

Background

In the related art, the engine can convert internal energy generated by fuel combustion into mechanical energy through the cooperative action of a plurality of kinematic pairs, so that the vehicle can be driven to run on the road. Wherein, in order to guarantee the operational reliability of a plurality of motion pairs, a plurality of motion pairs all need lubricating oil to lubricate.

In a crankcase of an engine, a common lubricating oil channel mode is that an oil channel for supplying a crankshaft and an oil channel for supplying a balance shaft are arranged in parallel, the mode cannot reasonably utilize the internal space of the crankcase, and the oil channel is complex in arrangement, poor in space utilization rate and low in reliability.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a crankcase through setting up first oil distribution way and second oil distribution way, can the rational utilization inner space of box, can make space utilization higher, and the reliability is better.

The utility model also provides an engine.

The utility model also provides an all terrain vehicle.

According to the utility model discloses crankcase, box of first aspect embodiment, be formed with main oil gallery, first oil branch way, second oil branch way, bent axle mounting hole and balance shaft mounting hole in the box, the bent axle mounting hole with the balance shaft mounting hole is in the interval sets up in the box, first oil branch way is connected main oil gallery with between the bent axle mounting hole, with to bent axle mounting hole department fuel feeding, the second oil branch way is connected main oil gallery with between the balance shaft mounting hole, with to balance shaft mounting hole department fuel feeding

According to the utility model discloses the crankcase through setting up first oil distribution way and second oil distribution way for when the main oil gallery can give fuel feeding between first oil distribution way and the second oil distribution way respectively, the inner space of rational utilization box, the box that so sets up can be under the prerequisite of guaranteeing overall structure, can make space utilization higher, and the reliability is better.

According to some embodiments of the utility model, first oil branch way be provided with the first oil inlet that the main oil gallery is connected, the second oil branch way be provided with the second oil inlet that the main oil gallery is connected, first oil inlet with the second oil inlet is in interval setting in the axial of main oil gallery.

According to the utility model discloses a some embodiments, first oil distribution way with the bent axle mounting hole is a plurality of and one-to-one, the second oil distribution way with the balance shaft mounting hole is a plurality of and one-to-one, and is a plurality of first oil inlet and a plurality of first oil distribution way the second oil inlet of second oil distribution way is in at least part crisscross setting in the axial of main oil gallery.

According to some embodiments of the invention, the box comprises: the first main part set up in on the second main part, first main part with the second main part is injectd jointly the bent axle mounting hole with the balance shaft mounting hole, the main oil gallery first branch oil gallery with the second divides the oil gallery and all opens up on the first main part.

According to some embodiments of the invention, the crankcase further comprises: the oil pan, the bottom that the second main part deviates from the first main part with oil pan fixed connection.

According to some embodiments of the present invention, the box body further comprises: the oil pump includes a first main body, a second main body, a first cover, and a second cover, wherein an open first oil chamber is formed on a lateral surface of the first main body, an open second oil chamber is formed on a lateral surface of the second main body, the first cover is disposed on an open side of the first oil chamber, and the second cover is disposed on an open side of the second oil chamber.

According to some embodiments of the present invention, an arc-shaped or annular first oil groove is disposed in the crankshaft mounting hole, and the first oil distribution duct is provided with a first oil outlet connected to the first oil groove; and a second oil outlet of the second oil distribution passage is formed in the balance shaft mounting hole.

According to some embodiments of the utility model, set for perpendicular to the plane of the axis of main oil gallery is first plane, the axis of first component oil duct with the axis of second component oil duct is in projection in the first plane has the contained angle.

According to some embodiments of the invention, the angle is α, α satisfies the relation: alpha is more than or equal to 15 degrees and less than 90 degrees.

According to the utility model discloses the engine of second aspect embodiment, including foretell crankcase.

An all-terrain vehicle according to an embodiment of the third aspect of the invention, comprises the above-mentioned engine.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a crankcase according to an embodiment of the invention;

FIG. 2 is an exploded view of the case;

FIG. 3 is a side schematic view of the first body;

FIG. 4 is a cross-sectional view of the first body and illustrates the main oil gallery;

FIG. 5 is another cross-sectional view of the first body and illustrates the main oil gallery and the first component oil gallery;

fig. 6 is still another cross-sectional view of the first body, and illustrates the main oil gallery and the second branch oil gallery.

Reference numerals:

100. a crankcase;

10. a box body; 11. a first body; 12. a second body; 13. an oil pan; 14. a first cover; 15. a second cover; 16. a crankshaft mounting hole; 17. a balance shaft mounting hole; 18. a first oil outlet; 19. a second oil outlet;

21. a main oil gallery; 22. a first oil distribution duct; 23. a second oil distribution passage; 24. a first oil chamber; 25. a second oil chamber; 26. a first oil groove; 28. a first oil inlet; 29. a second oil inlet.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

A crankcase 100 according to an embodiment of the invention is described below with reference to fig. 1-6, and an engine having the crankcase 100 is also provided.

As shown in fig. 1 to 6, the crankcase 100 includes: the main oil gallery 21, the first oil branch gallery 22, the second oil branch gallery 23, the crankshaft mounting hole 16 and the balance shaft mounting hole 17 are formed in the box body 10, and the crankshaft mounting hole 16 and the balance shaft mounting hole 17 are arranged in the box body 10 at intervals. Wherein the crankshaft is mounted in the crankshaft mounting hole 16 and the balance shaft is mounted in the balance shaft mounting hole 17.

As shown in fig. 4 to 6, the first sub oil gallery 22 is connected between the main oil gallery 21 and the crankshaft mounting hole 16 to supply oil to the crankshaft mounting hole 16, and the second sub oil gallery 23 is connected between the main oil gallery 21 and the balance shaft mounting hole 17 to supply oil to the balance shaft mounting hole 17. That is, the main oil gallery 21 communicates with the first and second branch oil galleries 22 and 23, and the main oil gallery 21 may communicate with the first and second branch oil galleries 22 and 23, respectively, to thereby supply the oil. That is, the lubricating oil flowing to the main oil gallery 21 may flow into the first oil gallery 22 and the second oil gallery 23, respectively, and may further supply oil to the crankshaft mounting hole 16 and the balance shaft mounting hole 17, respectively, to ensure the lubricating effect of each kinematic pair. Therefore, only one main oil channel 21 is arranged in the box body 10, so that the layout of the oil channels in the box body 10 is clear and simple, and the processing and manufacturing difficulty of the box body 10 can be effectively reduced.

From this, through setting up first oil distribution duct 22 and second oil distribution duct 23 for when main oil gallery 21 can give the fuel feeding between first oil distribution duct 22 and the second oil distribution duct 23 respectively, rational utilization box 10's inner space, box 10 that so sets up can be under the prerequisite of guaranteeing overall structure, can make space utilization higher, and the reliability is better.

As shown in fig. 5 and 6, the first sub-oil gallery 22 is provided with a first oil inlet 28 connected to the main oil gallery 21, the second sub-oil gallery 23 is provided with a second oil inlet 29 connected to the main oil gallery 21, and the first oil inlet 28 and the second oil inlet 29 are spaced apart in the axial direction of the main oil gallery 21. The first oil distribution duct 22 and the second oil distribution duct 23 which are arranged in this way can reasonably utilize the internal space of the box body 10, that is, the box body 10 can ensure that the space utilization rate is higher and the reliability is better on the premise of ensuring the whole structure.

As shown in fig. 4 to 6, the first oil branch gallery 22 and the crankshaft mounting hole 16 are each plural, and the plural first oil branch galleries 22 and the plural crankshaft mounting holes 16 are in one-to-one correspondence, the second oil branch gallery 23 and the balance shaft mounting hole 17 are each plural, and the plural second oil branch galleries 23 and the plural balance shaft mounting holes 17 are in one-to-one correspondence, and the first oil inlets 28 of the plural first oil branch galleries 22 and the second oil inlets 29 of the plural second oil branch galleries 23 are at least partially staggered in the axial direction of the main oil gallery 21. Specifically, first oil inlets 28 may be provided at both ends and a middle section in the axial direction of the main oil gallery 21, and a second oil inlet 29 may be provided between adjacent two of the first oil inlets 28. Further, a first oil inlet 28 is provided between the second oil inlet 29 and the first oil inlet 28 at one end of the main oil gallery 21. So set up, can make things convenient for the oil feed of bent axle mounting hole 16 and balanced axle mounting hole 17, can supply oil to bent axle and balanced axle everywhere moreover.

As shown in fig. 1 to 2, the case 10 includes: the main oil gallery structure comprises a first main body 11 and a second main body 12, wherein the first main body 11 is arranged on the second main body 12, the first main body 11 and the second main body 12 jointly define a crankshaft mounting hole 16 and a balance shaft mounting hole 17, and a main oil gallery 21, a first oil branch gallery 22 and a second oil branch gallery 23 are all arranged on the first main body 11. That is to say, the box 10 adopts the first main body 11 and the second main body 12 structure of components of a whole that can function independently, so on the one hand can be easy to assemble fixed crankshaft and balance shaft, on the other hand can conveniently set up main oil gallery 21, first oil distribution gallery 22 and second oil distribution gallery 23 respectively to can reduce the manufacturing degree of difficulty of box 10, can make box 10 structural arrangement reasonable, whole reliability is higher.

As shown in fig. 1, the crankcase 100 further includes: the oil pan 13, the bottom of the second body 12 facing away from the first body 11 is fixedly connected with the oil pan 13. The oil pan 13 is used for containing partial lubricating oil, an oil inlet channel, an oil cavity and an oil outlet channel are formed in the box body 10, the oil inlet channel is communicated with the oil cavity, the oil inlet channel is communicated with the oil pan 13 so as to suck the lubricating oil in the oil pan 13 upwards into the oil cavity, and the oil cavity is communicated with the oil outlet channel. That is, the first body 11 is disposed above the second body 12, so that by providing the main oil gallery 21, the first sub-oil gallery 22, and the second sub-oil gallery 23 all on the first body 11, it is possible for lubricating oil to flow from the main oil gallery 21 to the first and second sub-oil galleries 22 and 23 under the action of gravity, and then to be supplied to the crankshaft and the balance shaft.

As shown in fig. 1 and 2, the case 10 further includes: a first cover 14 and a second cover 15, a lateral surface of the first body 11 is formed with an open first oil chamber 24, a lateral surface of the second body 12 is formed with an open second oil chamber 25, the first cover 14 is disposed on an open side of the first oil chamber 24, and the second cover 15 is disposed on an open side of the second oil chamber 25. That is, the oil chamber is constituted by two communicating first oil chambers 24 and second oil chambers 25.

It can be understood that the utility model discloses a crankcase 100 has still reset the oil pocket that is used for saving lubricating oil on box 10 on the basis of setting up oil pan 13, and first oil pocket 24 and second oil pocket 25 can replace traditional oil pan, and it has the oil storage function, can promote the height of engine oil storage position on the one hand like this, and on the other hand can reduce the degree of depth of oil pan 13, reduces the size of engine, can promote the trafficability characteristic of vehicle.

The oil tank 10 is further provided with a first oil pump and a second oil pump, the first oil pump is arranged between the oil pan 13 and the oil cavity, the first oil pump is used for pumping lubricating oil in the oil pan 13 into the oil cavity, and the second oil pump is arranged between the oil cavity and the oil outlet channel. Therefore, lubricating oil supplied by the first oil pump firstly enters the first oil chamber 24 and then enters the second oil chamber 25 through the first oil chamber 24, and by adopting the mode of chamber division treatment, the large fluctuation of the oil level in the second oil chamber 25 can be effectively prevented when a vehicle is on a bumpy road surface, turns, brakes or an oil filling door. Therefore, the second oil pump does not have the oil cut-off condition under any running state of the vehicle, so that oil can be continuously supplied to each kinematic pair, and the lubricating effect of each kinematic pair can be ensured.

In addition, because the first oil chamber 24 is arranged, the lubricating oil pumped by the oil pump firstly enters the first oil chamber 24, so that the lubricating oil in the second oil chamber 25 can be prevented from being directly influenced by the part of the lubricating oil, the stability of the lubricating oil in the second oil chamber 25 can be better, and the lubricating oil can be continuously and stably supplied to the second oil pump.

Further, the first case cover 14 is provided on the open side of the first oil chamber 24, and the second case cover 15 is provided on the open side of the second oil chamber 25. That is, the first oil chamber 24 and the second oil chamber 25 may be spaced above and below the lateral surface of the case 10, and the first oil chamber 24 and the second oil chamber 25 are both opened, so that the first case cover 14 and the second case cover 15 may be sealed by the space therebetween, and the two oil chambers may occupy the space of the outer side portion of the case 10, so that the case 10 may be more compact in structure and have more functions.

Further, annular sealing gaskets may be disposed between the first main body 11 and the first cover 14, and between the second main body 12 and the second cover 15, and the annular sealing gaskets may be rubber gaskets, so as to prevent leakage of the lubricating oil and ensure sealing performance of the oil chamber.

As shown in fig. 2, an arc-shaped or annular first oil groove 26 is formed in the crankshaft mounting hole 16, a first oil outlet 18 connected to the first oil groove 26 is formed in the first oil dividing passage 22, and a second oil outlet 19 of the second oil dividing passage 23 is formed in the balance shaft mounting hole 17. That is, the lubricating oil is introduced into the main oil gallery 21 by the oil pump, and then introduced into the first oil gallery 22 and the second oil gallery 23, respectively, so that the lubricating oil can be circulated into the crankshaft mounting hole 16 and the balance shaft mounting hole 17. Specifically, the first oil distribution passage 22 communicates with the first oil outlet 18, and the first oil outlet 18 is located in the first oil groove 26, so that when the lubricating oil enters the crankshaft mounting hole 16, the first oil groove 26 can buffer the lubricating oil, so that the lubricating oil can be continuously supplied to the crankshaft. Likewise, when the second oil distribution passage 23 is communicated with the second oil outlet 19 and the second oil outlet 19 is located in the balance shaft mounting hole 17, the lubricating oil can directly enter the balance shaft mounting hole 17 for lubrication, so that the lubricating oil can be continuously supplied to the balance shaft.

In addition, as shown in fig. 3, a plane perpendicular to the axis of the main oil gallery 21 is set as a first plane, and the projection of the axis of the first oil gallery 22 and the axis of the second oil gallery 23 in the first plane has an included angle, so that the axis of the first oil gallery 22 and the axis of the second oil gallery 23 are not in the same direction, which not only can make the main oil gallery 21 effectively connect the crankshaft mounting hole 16 and the balance shaft mounting hole 17, but also can reduce the difficulty in designing the whole of the main oil gallery 21, the first oil gallery 22 and the second oil gallery 23.

Further, as shown in fig. 3, the included angle between the first oil distribution passage 22 and the second oil distribution passage 23 is α, and α satisfies the relationship: alpha is more than or equal to 15 degrees and less than 90 degrees. With the arrangement, when the included angle between the first oil distribution passage 22 and the second oil distribution passage 23 is between 15 degrees and 90 degrees, the relative positions between the crankshaft mounting hole 16 and the balance shaft mounting hole 17 can be reasonably arranged, and the phenomenon that the distance between the crankshaft mounting hole 16 and the balance shaft mounting hole 17 is too far or too close is avoided, so that the space utilization rate of the first main body 11 is higher, and the reliability is better.

An engine according to a second aspect of the present invention includes the crankcase 100 described above.

According to the utility model discloses full all terrain vehicle of second aspect embodiment, include: the engine described above.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (11)

1. A crankcase, comprising:

the box, be formed with main oil gallery, first oil branch way, second oil branch way, bent axle mounting hole and balance shaft mounting hole in the box, the bent axle mounting hole with the balance shaft mounting hole is in the interval sets up in the box, first oil branch way is connected the main oil gallery with between the bent axle mounting hole, with to bent axle mounting hole department fuel feeding, the second oil branch way is connected the main oil gallery with between the balance shaft mounting hole, with to balance shaft mounting hole department fuel feeding.

2. The crankcase according to claim 1, wherein the first branch oil gallery is provided with a first oil inlet connected to the main oil gallery, the second branch oil gallery is provided with a second oil inlet connected to the main oil gallery, and the first oil inlet and the second oil inlet are spaced apart in an axial direction of the main oil gallery.

3. The crankcase of claim 2, wherein the first oil distribution passage and the crankshaft mounting hole are in a plurality of one-to-one correspondence, the second oil distribution passage and the balance shaft mounting hole are in a plurality of one-to-one correspondence, and first oil inlets of the plurality of first oil distribution passages and second oil inlets of the plurality of second oil distribution passages are at least partially staggered in an axial direction of the main oil passage.

4. The crankcase of claim 1, wherein the case includes: the first main part set up in on the second main part, first main part with the second main part is injectd jointly the bent axle mounting hole with the balance shaft mounting hole, the main oil gallery first branch oil gallery with the second divides the oil gallery and all opens up on the first main part.

5. The crankcase of claim 4, further comprising: the oil pan, the bottom that the second main part deviates from the first main part with oil pan fixed connection.

6. The crankcase of claim 4, wherein the case further comprises: the oil pump includes a first main body, a second main body, a first cover, and a second cover, wherein an open first oil chamber is formed on a lateral surface of the first main body, an open second oil chamber is formed on a lateral surface of the second main body, the first cover is disposed on an open side of the first oil chamber, and the second cover is disposed on an open side of the second oil chamber.

7. The crankcase according to claim 1, wherein an arc-shaped or annular first oil groove is formed in the crankshaft mounting hole, and a first oil outlet connected with the first oil groove is formed in the first oil branch passage;

and a second oil outlet of the second oil distribution passage is formed in the balance shaft mounting hole.

8. The crankcase according to any one of claims 1 to 7, wherein a plane perpendicular to the axis of the main oil gallery is set as a first plane, and a projection of the axis of the first oil gallery and the axis of the second oil gallery in the first plane has an included angle.

9. The crankcase of claim 8, wherein the included angle is α, and α satisfies the relationship: alpha is more than or equal to 15 degrees and less than 90 degrees.

10. An engine comprising the crankcase of any one of claims 1-9.

11. An all terrain vehicle comprising the engine of claim 10.

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