CN213298135U - Crankcase structure of motorcycle engine - Google Patents
Crankcase structure of motorcycle engine Download PDFInfo
- Publication number
- CN213298135U CN213298135U CN202022189720.0U CN202022189720U CN213298135U CN 213298135 U CN213298135 U CN 213298135U CN 202022189720 U CN202022189720 U CN 202022189720U CN 213298135 U CN213298135 U CN 213298135U
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- Prior art keywords
- hole
- crankcase
- cavity
- conical
- plate
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- 239000010705 motor oil Substances 0.000 claims description 20
- 230000000903 blocking effect Effects 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 4
- 239000010721 machine oil Substances 0.000 abstract description 12
- 239000003921 oil Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The utility model provides a motorcycle engine's crankcase structure belongs to crankcase technical field. It has solved when current crankcase slope easily makes machine oil filter equipment expose at the outside problem of quick-witted oil. It includes that preceding lower part is equipped with left crankcase and right crankcase of filter mounting hole, be formed with the cavity that is used for splendid attire machine oil between left side crankcase and the right crankcase, be equipped with in the cavity and be used for cutting apart into the baffle of preceding cavity and back cavity with the cavity, filter mounting hole and preceding cavity intercommunication, be equipped with the circular cone through-hole that is used for cavity and back cavity before the intercommunication on the baffle, the aperture of circular cone through-hole front end is greater than the aperture of its rear end, the sideline of circular cone through-hole's the below is by going to the backward tilt up, be equipped with the shutoff ball that the external diameter is greater than the minimum internal diameter of circular cone through-hole in the circular cone through-hole, the front end of circular. The utility model discloses can guarantee that machine oil effectively supplies with, have structural design rationally, advantages such as structural strength height.
Description
Technical Field
The utility model belongs to the technical field of the crankcase, a crankcase structure of motorcycle engine is related to.
Background
The crankcase of the engine is formed by connecting a left crankcase body and a right crankcase body, a cavity for containing engine oil is arranged at the lower part of an inner cavity of the crankcase, a filter mounting hole is arranged at the front lower part of the left crankcase body, an engine oil filtering device is arranged in the filter mounting hole, and the engine oil positioned in the cavity is conveyed into the engine to be lubricated after being filtered by the engine oil filtering device when the engine works. Because the filter mounting hole is positioned at the front lower part of the left crank shaft box body, when the motorcycle climbs a slope, the crank shaft box inclines, and engine oil positioned in the cavity can move backwards, so that the engine oil filtering device is exposed outside the engine oil, the engine oil can not enter the engine, the engine oil supply is interrupted, and the performance and the service life of the engine are influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at having the above-mentioned problem to current technique, provided a can guarantee the effective motorcycle engine's that supplies with of machine oil crankcase structure.
The purpose of the utility model can be realized by the following technical proposal:
the crankcase structure of the motorcycle engine comprises a left crankcase body and a right crankcase body, wherein a filter mounting hole is formed in the front lower portion of the left crankcase body, the right crankcase body is buckled with the left crankcase body, a cavity for containing engine oil is formed between the left crankcase body and the right crankcase body, a partition plate used for dividing the cavity into a front cavity and a rear cavity is arranged in the cavity, the filter mounting hole is communicated with the front cavity, a conical through hole used for communicating the front cavity and the rear cavity is formed in the partition plate, the aperture of the front end of the conical through hole is larger than that of the rear end of the conical through hole, the lowermost side line of the conical through hole inclines upwards from front to back, a blocking ball with the outer diameter larger than the minimum inner diameter of the conical through hole is arranged in the conical through hole, and a limiting plate used for limiting the blocking ball is arranged at the.
The cone through hole is positioned below the liquid level of the engine oil, because the lowermost side line of the cone through hole inclines upwards from front to back, when the crankcase structure is in a horizontal state, the blocking ball is positioned at the front end of the cone through hole and abuts against the limiting plate, at the moment, an overflowing gap is reserved among the limiting plate, the blocking ball and the partition plate, and the engine oil positioned in the rear cavity flows into the front cavity through the cone through hole and the overflowing gap; when the height of crankcase structure front end was higher than the height of its rear end, the sideline of the below of circular cone through-hole was by going to back horizontal extension or downwardly extending, and the machine oil that is located the rear cavity breaks away from circular cone through-hole, and the shutoff ball moves backward and with circular cone through-hole shutoff under the effect of machine oil in the cavity in the front and the effect of shutoff ball gravity, and the machine oil that is located the cavity in the front this moment can not flow back to the rear cavity in, guarantees the effective supply of machine oil. Wherein, the blocking ball is a metal ball.
In the crankcase structure of the motorcycle engine, the partition plate comprises a left plate body arranged in the left crankcase body and a right plate body arranged in the right crankcase body, when the left crankcase body is buckled with the right crankcase body, the right edge of the left plate body is hermetically attached to the left edge of the right plate body, and the conical through hole is formed in the right plate body. The conical through hole is arranged on the right plate body and is not limited by the filter mounting hole, and the plugging ball and the limiting plate are more convenient to operate when being mounted.
In the crankcase structure of the motorcycle engine, the right plate body is provided with a threaded hole below the conical through hole, the limiting plate is fixed on the front side surface of the right plate body through a bolt in the threaded hole in threaded connection, and the upper end of the limiting plate is lower than the uppermost sideline of the conical through hole. Namely, an overflowing clearance is formed between the limiting plate and the conical through hole.
In the crankcase structure of the motorcycle engine, the limiting plate is provided with a plurality of overflowing holes, and the diameter of each overflowing hole is smaller than the outer diameter of the plugging ball.
In the crankcase structure of the motorcycle engine, the upper portion of the left plate body is provided with a first extension plate obliquely extending to the upper portion of the front cavity, the upper portion of the right plate body is provided with a second extension plate obliquely extending to the upper portion of the front cavity, and when the left crankcase body and the right crankcase body are buckled, the right edge of the first extension plate is in sealing fit with the left edge of the second extension plate. The first extension plate and the second extension plate increase the effective volume of the front cavity, and when the crankcase structure is inclined, engine oil can be effectively guaranteed to overflow the filter mounting hole.
In the crankcase structure of the motorcycle engine, an included angle between a sideline of the lowest part of the conical through hole and a horizontal plane is 5-15 degrees.
Compared with the prior art, the crankcase structure of the motorcycle engine has the following advantages: the one-way valve structure is formed by the conical through hole, the blocking ball and the limiting plate, so that when the front end of the crankcase structure is higher than the rear end of the crankcase structure, the engine oil in the front cavity is prevented from flowing back, and the effective supply of the engine oil is ensured; structural design is reasonable, and the baffle not only plays the isolation effect, still can regard as the strengthening rib of crankcase structure, reinforcing structural strength.
Drawings
Fig. 1 is a schematic structural view of a left crankcase body provided by the present invention.
Fig. 2 is a schematic structural view of the right crankcase body according to the present invention.
Fig. 3 is a sectional view at the right plate body with the crankcase structure in a horizontal state.
Fig. 4 is a sectional view at the right plate body when the crankcase structure is in an inclined state.
In the figure, 1, a filter mounting hole; 2. a left crankcase body; 3. a right crankcase body; 4. a front cavity; 5. a rear cavity; 6. a conical through hole; 7. plugging the ball; 8. a limiting plate; 9. a left plate body; 10. a right plate body; 11. a bolt; 12. a first extension plate; 13. and a second extension plate.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
The crankcase structure of motorcycle engine, as shown in fig. 1 and fig. 2, includes a left crankcase body 2 with a filter mounting hole 1 at the front lower part and a right crankcase body 3 buckled with the left crankcase body 2, a cavity for containing engine oil is formed between the left crankcase body 2 and the right crankcase body 3, a baffle plate for dividing the cavity into a front cavity 4 and a rear cavity 5 is arranged in the cavity, and the filter mounting hole 1 is communicated with the front cavity 4.
As shown in fig. 1 and 2, the partition plate includes a left plate 9 provided in the left crankcase body 2 and a right plate 10 provided in the right crankcase body 3, and when the left crankcase body 2 is fastened to the right crankcase body 3, a right edge of the left plate 9 is sealingly attached to a left edge of the right plate 10.
As shown in fig. 3, a conical through hole 6 for communicating the front cavity 4 with the rear cavity 5 is arranged on the right plate body 10, the aperture of the front end of the conical through hole 6 is larger than that of the rear end thereof, the lowermost sideline of the conical through hole 6 inclines upwards from front to back, as shown in fig. 3, the included angle alpha between the lowermost sideline of the conical through hole 6 and the horizontal plane is 5-15 degrees, a plugging ball 7 with the outer diameter larger than the minimum inner diameter of the conical through hole 6 is arranged in the conical through hole 6, and the plugging ball 7 is a metal ball.
In this embodiment, be equipped with the screw hole that is located circular cone through-hole 6 below on right plate body 10, the front end of circular cone through-hole 6 is equipped with and is used for 7 spacing limiting plate 8 to the shutoff ball. The limiting plate 8 is fixed on the front side surface of the right plate body 10 through a bolt 11 which is connected in the threaded hole in a threaded manner, and an overflowing gap is formed between the limiting plate 8 and the conical through hole 6.
In this embodiment, the limiting plate 8 has a plurality of overflowing holes, and the diameter of the overflowing holes is smaller than the outer diameter of the plugging ball 7.
As shown in FIG. 1, the upper portion of the left plate 9 has a first extension plate 12 extending obliquely to the upper portion of the front cavity 4, as shown in FIG. 2, the upper portion of the right plate 10 has a second extension plate 13 extending obliquely to the upper portion of the front cavity 4, and when the left crankcase body 2 is engaged with the right crankcase body 3, the right edge of the first extension plate 12 is in sealing engagement with the left edge of the second extension plate 13. The first extension plate 12 and the second extension plate 13 increase the effective volume of the front cavity 4, and effectively ensure that the engine oil passes through the filter mounting hole 1 when the crankcase structure is inclined.
The conical through hole 6 is positioned below the liquid level of the engine oil, because the lowermost sideline of the conical through hole 6 inclines upwards from front to back, when the crankcase structure is in a horizontal state, the blocking ball 7 is positioned at the front end of the conical through hole 6 and is abutted against the limiting plate 8, at the moment, an overflowing gap is reserved among the limiting plate 8, the blocking ball 7 and the partition plate, and the engine oil positioned in the rear cavity 5 flows into the front cavity 4 through the conical through hole 6 and the overflowing gap; when the height of crankcase structure front end was higher than the height of its rear end, the sideline of the below of circular cone through-hole 6 was by going to back horizontal extension or downwardly extending, and the machine oil that is located rear cavity 5 breaks away from circular cone through-hole 6, and the effect of machine oil and the effect of the 7 gravity of shutoff ball 7 in cavity 4 before 7 backward movements of shutoff ball and with circular cone through-hole 6 shutoff, and the machine oil that is located cavity 4 before this moment can not flow back to rear cavity 5 in, guarantees the effective supply of machine oil.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. A crankcase structure of a motorcycle engine comprises a left crankcase body (2) with a filter mounting hole (1) at the front lower part and a right crankcase body (3) buckled with the left crankcase body (2), a cavity for containing engine oil is formed between the left crankcase body (2) and the right crankcase body (3), the crankcase structure is characterized in that a partition plate for dividing the cavity into a front cavity (4) and a rear cavity (5) is arranged in the cavity, the filter mounting hole (1) is communicated with the front cavity (4), a conical through hole (6) for communicating the front cavity (4) with the rear cavity (5) is arranged on the partition plate, the aperture of the front end of the conical through hole (6) is larger than that of the rear end of the conical through hole, the lowermost sideline of the conical through hole (6) inclines upwards from front to back, a blocking ball (7) with the outer diameter larger than the minimum inner diameter of the conical through hole (6) is arranged in the conical through hole (6), and a limiting plate (8) used for limiting the blocking ball (7) is arranged at the front end of the conical through hole (6).
2. The crankcase structure of a motorcycle engine according to claim 1, wherein the partition plate includes a left plate body (9) provided in the left crankcase body (2) and a right plate body (10) provided in the right crankcase body (3), wherein a right edge of the left plate body (9) is in sealing contact with a left edge of the right plate body (10) when the left crankcase body (2) is fastened to the right crankcase body (3), and the conical through hole (6) is provided in the right plate body (10).
3. The crankcase structure of a motorcycle engine according to claim 2, wherein the right plate body (10) is provided with a threaded hole below the conical through hole (6), the limit plate (8) is fixed on the front side surface of the right plate body (10) through a bolt (11) which is in threaded connection with the threaded hole, and the upper end of the limit plate (8) is lower than the uppermost sideline of the conical through hole (6).
4. A crankcase structure of motorcycle engine according to claim 3, characterized in that the retainer plate (8) has a plurality of overflow holes having a diameter smaller than the outer diameter of the plugging ball (7).
5. The crankcase structure of motorcycle engine according to claim 2, wherein the upper portion of the left plate body (9) has a first extension plate (12) extending obliquely to the upper portion of the front cavity (4), the upper portion of the right plate body (10) has a second extension plate (13) extending obliquely to the upper portion of the front cavity (4), and the right edge of the first extension plate (12) is in sealing engagement with the left edge of the second extension plate (13) when the left crankcase body (2) is fastened to the right crankcase body (3).
6. A crankcase structure of a motorcycle engine according to claim 1, wherein an angle α between a lowermost side line of the conical through hole (6) and a horizontal plane is 5 ° to 15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022189720.0U CN213298135U (en) | 2020-09-29 | 2020-09-29 | Crankcase structure of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022189720.0U CN213298135U (en) | 2020-09-29 | 2020-09-29 | Crankcase structure of motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213298135U true CN213298135U (en) | 2021-05-28 |
Family
ID=76010784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022189720.0U Expired - Fee Related CN213298135U (en) | 2020-09-29 | 2020-09-29 | Crankcase structure of motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213298135U (en) |
-
2020
- 2020-09-29 CN CN202022189720.0U patent/CN213298135U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |