CN212985526U - Engine and rotor oil pump thereof - Google Patents
Engine and rotor oil pump thereof Download PDFInfo
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- CN212985526U CN212985526U CN202021329527.6U CN202021329527U CN212985526U CN 212985526 U CN212985526 U CN 212985526U CN 202021329527 U CN202021329527 U CN 202021329527U CN 212985526 U CN212985526 U CN 212985526U
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Abstract
The utility model discloses an engine and rotor oil pump thereof, this rotor oil pump includes: a pump housing formed with a first rotor chamber, a second rotor chamber and a shaft hole, the first rotor chamber and the second rotor chamber being provided at an interval, the shaft hole communicating the first rotor chamber and the second rotor chamber; the pump shaft penetrates through the first rotor chamber, the shaft hole and the second rotor chamber; a first rotor assembly disposed in the first rotor chamber, the first rotor assembly comprising: the pump comprises a first inner rotor and a first outer rotor, wherein the first inner rotor is arranged on a pump shaft and can rotate relative to the first outer rotor; a second rotor assembly disposed in the second rotor chamber, the second rotor assembly comprising: the pump comprises a first inner rotor and a first outer rotor, wherein the first inner rotor is arranged on the pump shaft and can rotate relative to the first outer rotor. From this, through setting up two rotor subassemblies, can be so that rotor oil pump integrated level is high, can carry out the pump oil work in the different positions of engine to can guarantee the lubricated effect of engine.
Description
Technical Field
The utility model belongs to the technical field of the oil pump technique and specifically relates to an engine and rotor oil pump thereof is related to.
Background
At present, an engine is generally provided with a rotor type lubricating oil pump, wherein the rotor type lubricating oil pump sucks lubricating oil from an oil pan of the engine and then delivers the lubricating oil to each lubricating surface at certain pressure; the delivered lubricating oil flows to an oil pan at the lowest end of the engine after being lubricated; the above steps are repeated. The engine of a rotor formula lubricant pump, the oil pan must have a large amount of lubricating oil, guarantees that the engine can both absorb lubricating oil at the different inclination angle in the use, and the oil pan degree of depth of engine requires very deeply, leads to the engine height very high, is unfavorable for the engine to arrange on whole car, and the pump oil effect of a rotor formula lubricant pump is relatively poor moreover.
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, an object of the utility model is to provide a rotor oil pump, this rotor oil pump integrated level is high, can make lubricating oil effectively lubricate each kinematic pair moreover.
The utility model discloses an engine is further provided.
According to the utility model discloses a rotor oil pump, include: a pump housing formed with a first rotor chamber, a second rotor chamber, and a shaft hole, the first rotor chamber and the second rotor chamber being provided at an interval, the shaft hole communicating the first rotor chamber and the second rotor chamber; a pump shaft passing through the first rotor chamber, the shaft bore, and the second rotor chamber; a first rotor assembly disposed in the first rotor chamber, the first rotor assembly comprising: the pump comprises a first inner rotor and a first outer rotor, wherein the first inner rotor is arranged on the pump shaft and can rotate relative to the first outer rotor.
According to the utility model discloses a rotor oil pump, through setting up the second rotor subassembly, it can with first rotor subassembly synergism, accomplish the pump oil work in the engine jointly to can guarantee the lubricated effect of engine, can reduce the height of oil pan moreover, and the rotor oil pump integrated level that so sets up is high, occupies smallly.
In some examples of embodiments of the present invention, the pump housing comprises: casing, first pump cover and second pump cover, be formed with on the casing open first rotor chamber, open second rotor chamber with the shaft hole, first pump cover is installed the one end of casing just covers the open end of first rotor chamber, the second pump cover is installed the other end of casing just covers the open end of second rotor chamber.
In some examples of the embodiments of the present invention, the first pump cover is formed with a support groove having one end closed and the other end open to the first rotor chamber, and one end of the pump shaft extends into the support groove.
In some examples of embodiments of the present invention, the second pump cover is formed with a perforation, and the other end of the pump shaft passes through the perforation.
In some examples of embodiments of the present invention, the other end of the pump shaft is provided with a drive wheel and a mounting member, the mounting member being to mount the drive wheel to the other end of the pump shaft.
In some examples of embodiments of the present invention, the other end of the pump shaft is provided with an internal thread hole, the mounting member is a bolt, and the bolt passes through the center of the drive wheel and the internal thread hole are in threaded fit.
In some examples of embodiments of the present invention, the support groove, the shaft hole, and the through hole are all in clearance fit with the pump shaft.
In some examples of embodiments of the present invention, the pump shaft and between the first inner rotor, and the pump shaft and between the second inner rotor, all are provided with a drive pin.
In some examples of the embodiments of the present invention, the pump shaft is sleeved with an oil seal, and the oil seal is located at an end of the second rotor chamber close to the first rotor chamber.
According to the utility model discloses an embodiment, an engine includes: a crankcase, the crankcase comprising: the oil pan is arranged at the bottom of the box body, and an oil cavity and an oil outlet channel which are communicated are formed in the box body; the rotor oil pump, the rotor oil pump set up in the crankcase, the second rotor subassembly be used for with lubricating oil pump in the oil pan extremely the oil pocket, first rotor subassembly be used for with lubricating oil pump in the oil pocket extremely go out oil passage.
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 cross-sectional view of a gerotor oil pump in accordance with an embodiment of the present invention;
fig. 2 is a schematic diagram of an engine according to the present invention.
Reference numerals:
a gerotor oil pump 100;
a pump housing 10; a first rotor chamber 11;
a second rotor chamber 12; a shaft hole 13; a housing 14; a first pump cover 15; a support groove 151; a second pump cap 16; a perforation 161;
a pump shaft 20; a drive pin 21;
a first rotor assembly 30; a first inner rotor 31; a first outer rotor 32;
a second rotor assembly 40; a second inner rotor 41; a second outer rotor 42;
a drive wheel 50; a mounting member 60; an oil seal 70;
a crankcase 200; a case 210; an oil pan 220; an oil chamber 230.
Detailed Description
Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.
Referring to fig. 1, a rotor oil pump 100 according to an embodiment of the present invention is described, the rotor oil pump 100 is applied to an engine, specifically, the engine further includes a crankcase 200, the crankcase 200 includes a case 210 and an oil pan 220, and the rotor oil pump 100 is disposed in the crankcase 200.
As shown in fig. 1, a gerotor oil pump 100 according to an embodiment of the present invention includes: a pump housing 10, a pump shaft 20, a first rotor assembly 30, and a second rotor assembly 40. The pump housing 10 is formed with a first rotor chamber 11, a second rotor chamber 12, and a shaft hole 13, the first rotor chamber 11 and the second rotor chamber 12 being provided at a spacing, the shaft hole 13 communicating the first rotor chamber 11 and the second rotor chamber 12. That is, the pump housing 10 defines a spatial structure of the first rotor chamber 11, the second rotor chamber 12, and the shaft hole 13, and the first rotor chamber 11 and the second rotor chamber 12 are respectively provided at intervals at both ends of the shaft hole 13 and communicate with each other through the shaft hole 13.
As shown in fig. 1, the pump shaft 20 passes through the first rotor chamber 11, the shaft hole 13 and the second rotor chamber 12, that is, the pump shaft 20 is matched with the first rotor chamber 11, the shaft hole 13 and the second rotor chamber 12, so that the reliability of the support and transmission of the shaft end can be ensured, the reliability of the rotor oil pump 100 can be improved, and the first rotor assembly 30 in the first rotor chamber 11 and the second rotor assembly 40 in the second rotor chamber 12 can be ensured to share the pump shaft 20, so that the integration level of the rotor oil pump 100 can be improved.
As shown in fig. 1, the first rotor assembly 30 includes: a first inner rotor 31 and a first outer rotor 32, the first inner rotor 31 being disposed on the pump shaft 20 and rotatable relative to the first outer rotor 32, that is, the first rotor chamber 11 defines a space structure in which the first rotor assembly 30 is installed, the first rotor assembly 30 is constituted by the first inner rotor 31 and the first outer rotor 32, and the first inner rotor 31 is installed on the pump shaft 20 to rotate in synchronization with the pump shaft 20. When the engine works, the pump shaft 20 drives the first inner rotor 31 of the first rotor assembly 30 to rotate, so that oil pumping work is realized.
As shown in fig. 1, a second rotor assembly 40 is disposed in the second rotor chamber 12, the second rotor assembly 40 including: and a second inner rotor 41 and a second outer rotor 42, the second inner rotor 41 being disposed on the pump shaft 20 and rotatable with respect to the second outer rotor 42, and similarly, the second rotor chamber 12 defines a space structure in which a second rotor assembly 40 is installed, the second rotor assembly 40 being constituted by the second inner rotor 41 and the second outer rotor 42, and the second inner rotor 41 being installed on the pump shaft 20 to rotate in synchronization with the pump shaft 20. During operation of the engine, the pump shaft 20 rotates the second inner rotor 41 of the second rotor assembly 40.
Wherein the second rotor assembly 40 is used to deliver the oil in the oil pan 220 to the lubricating oil chamber 230, and the first rotor assembly 30 is used to deliver the oil in the oil chamber 230 to the surfaces of the various kinematic pairs. The flow rate of the second rotor assembly 40 is greater than that of the first rotor assembly 30, so that the lubricating oil in the oil pan 220 can be completely delivered into the oil chamber 230, and the oil pan 220 does not need to store much oil, so that the design height of the oil pan 220 can be reduced, the height of the engine can be greatly reduced, the gravity center of the whole vehicle can be further reduced, and the driving stability and the controllability of the vehicle can be improved.
The inner rotors of the two rotor assemblies are assembled on one pump shaft 20, and the inner and outer rotors of the two rotor assemblies are assembled in rotor chambers at two ends of the same rotor oil pump 100, so that the structural arrangement of the rotor oil pump 100 is more compact and firm.
Therefore, by arranging the second rotor assembly 40, the second rotor assembly can cooperate with the first rotor assembly 30 to pump oil, so that the lubricating effect of an engine can be ensured, and the rotor oil pump 100 is high in integration level and small in occupied volume. In addition, the rotor oil pump 100 can convey the lubricating oil in the oil pan 220 to the oil cavity 230 arranged on the engine, so that the engine can be arranged at a position higher than the oil pan 220 to contain the lubricating oil cavity 230, the depth of the oil pan 220 can be very shallow, the overall height of the engine can be reduced, and the arrangement of the engine on the whole vehicle is facilitated.
According to some embodiments of the present invention, as shown in fig. 1, the pump housing 10 includes: a casing 14, a first pump cover 15, and a second pump cover 16, the casing 14 being formed with an open first rotor chamber 11, an open second rotor chamber 12, and a shaft hole 13, the first pump cover 15 being mounted at one end of the casing 14 and covering an open end of the first rotor chamber 11, the second pump cover 16 being mounted at the other end of the casing 14 and covering an open end of the second rotor chamber 12. Specifically, a housing 14, a first pump cover 15, and a second pump cover 16 constitute a pump housing 10, and both ends of the housing 14 form a first rotor chamber 11 and a second rotor chamber 12 that are open toward both sides. The first pump cover 15 and the second pump cover 16 are provided at both ends of the pump body and cover the open ends of the first rotor chamber 11 and the second rotor chamber 12, respectively, and are used as cover plates on one sides of the first rotor chamber 11 and the second rotor chamber 12, thereby ensuring the overall tightness of the rotor oil pump 100. The pump casing 10 thus configured is simple and reliable in structure, and can facilitate assembly of the first and second rotor assemblies 30 and 40, which can further improve assembly efficiency of the gerotor pump 100.
According to an embodiment of the present invention, as shown in fig. 1, the first pump cover 15 is formed with a support groove 151 having one end closed and the other end opened to the first rotor chamber 11, and one end of the pump shaft 20 extends into the support groove 151. The closed end of the first pump cover 15 serves to close and protect the first rotor chamber 11, and the open end of the support groove 151 serves to support and protect the pump shaft 20, so that the rotational reliability of the pump shaft 20 can be ensured.
According to an embodiment of the present invention, the second pump cover 16 is formed with a through hole 161, and the other end of the pump shaft 20 passes through the through hole 161. The through hole 161 formed in the second pump cover 16 ensures a through space structure of the pump shaft 20, so that the pump shaft 20 can be conveniently connected with an external transmission component, and power transmission is realized.
Alternatively, as shown in fig. 1, the other end of the pump shaft 20 is provided with a driving wheel 50 and a mounting member 60, the mounting member 60 mounts the driving wheel 50 at the other end of the pump shaft 20, and the driving wheel 50 drives the pump shaft 20 to rotate under the driving of the internal transmission component of the engine when the engine is in operation. That is, the end of the pump shaft 20 near the second rotor chamber 12 is provided with the driving wheel 50 and the mounting member 60, and the mounting member 60 mounts the driving wheel 50 at the end of the pump shaft 20, so that the driving wheel 50 can be firmly and reliably mounted.
Specifically, as shown in fig. 1, the other end of the pump shaft 20 is provided with an internally threaded hole, and the mounting member 60 is a bolt that is threaded through the center of the driving wheel 50 to be engaged with the internally threaded hole. The thread fit can ensure that the driving wheel 50 is firmly installed at one end of the pump shaft 20, and the thread fit is simple and easy to implement.
Wherein, the supporting groove 151, the shaft hole 13 and the through hole 161 are all clearance-fitted with the pump shaft 20. The clearance fit can ensure that the pump shaft 20 can rotate freely, and the support groove 151, the shaft hole 13 and the through hole 161 can all have sliding friction with the pump shaft 20, so that a bearing can be omitted, the structural complexity of the rotor oil pump 100 can be further reduced, and the cost of the rotor oil pump 100 is reduced.
Specifically, drive pins 21 are disposed between the pump shaft 20 and the first inner rotor 31, and between the pump shaft 20 and the second inner rotor 41. The arrangement of the transmission tip 21 can ensure that the first inner rotor 31 and the second inner rotor 41 are more firmly arranged on the pump shaft 20, so that the operational reliability of the gerotor oil pump 100 can be ensured.
Also, as shown in fig. 1, an oil seal 70 is fitted on the pump shaft 20, and the oil seal 70 is located at the end of the second rotor chamber 12 close to the first rotor chamber 11. Or, an oil seal 70 is provided in the shaft hole 13 at a position adjacent to the second rotor chamber 12. The oil seal 70 can effectively prevent the lubricating oil in the lubricating oil chamber 230 from leaking into the oil pan 220 when the engine is at rest, ensuring the sealing property of the two rotor chambers. Wherein the oil seal 70 may be a frame oil seal 70.
As shown in fig. 2, the engine according to the embodiment of the present invention includes: crankcase 200 and rotor oil pump 100 of the above-mentioned embodiment, crankcase 200 includes: the oil pan 220 is arranged at the bottom of the box body 210, and the box body 210 is provided with an oil cavity 230 and an oil outlet passage 230 which are communicated; the rotor oil pump 100 is provided to the crankcase 200, the second rotor is provided above the oil pan 220 to pump the lubricating oil in the oil pan 220 to the oil chamber 230, and the first rotor chamber 11 is provided in the line body to pump the lubricating oil in the oil chamber 230 to the oil outlet passage 230.
Thus, by providing the oil chamber 230 on the basis of the oil pan 220, the height of the oil pan 220 can be reduced, and by the gerotor pump 100, lubricating oil can be efficiently supplied to the respective surfaces of the pair of moving wheels, so that the lubricating effect of the engine can be ensured.
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 (10)
1. A gerotor pump for an engine, comprising:
a pump housing formed with a first rotor chamber, a second rotor chamber, and a shaft hole, the first rotor chamber and the second rotor chamber being provided at an interval, the shaft hole communicating the first rotor chamber and the second rotor chamber;
a pump shaft passing through the first rotor chamber, the shaft bore, and the second rotor chamber;
a first rotor assembly disposed in the first rotor chamber, the first rotor assembly comprising: the pump comprises a first inner rotor and a first outer rotor, wherein the first inner rotor is arranged on the pump shaft and can rotate relative to the first outer rotor;
a second rotor assembly disposed in the second rotor chamber, the second rotor assembly comprising: a second inner rotor and a second outer rotor, the second inner rotor disposed on the pump shaft and rotatable relative to the second outer rotor.
2. The gerotor pump of claim 1, wherein the pump housing comprises: casing, first pump cover and second pump cover, be formed with on the casing open first rotor chamber, open second rotor chamber with the shaft hole, first pump cover is installed the one end of casing just covers the open end of first rotor chamber, the second pump cover is installed the other end of casing just covers the open end of second rotor chamber.
3. The gerotor pump of claim 2, wherein the first pump cover is formed with a support groove closed at one end and open at the other end to the first rotor chamber, and one end of the pump shaft extends into the support groove.
4. The gerotor pump of claim 3, wherein the second pump cover is formed with a through hole through which the other end of the pump shaft passes.
5. The gerotor pump of claim 4, wherein the other end of the pump shaft is provided with a drive wheel and a mount mounting the drive wheel to the other end of the pump shaft.
6. The gerotor pump of claim 5, wherein the other end of the pump shaft is provided with an internally threaded bore, and the mounting member is a bolt that is threaded through a center of the drive wheel to engage the internally threaded bore.
7. The rotorbrush pump of claim 4, wherein the support notch, the shaft bore, and the bore are each in clearance fit with the pump shaft.
8. The gerotor pump of any one of claims 1-7, wherein drive pins are disposed between the pump shaft and the first inner rotor, and between the pump shaft and the second inner rotor.
9. The rotoric oil pump of any one of claims 1-7, wherein an oil seal is sleeved on the pump shaft and is located at an end of the second rotor chamber that is adjacent to the first rotor chamber.
10. An engine, comprising:
a crankcase, the crankcase comprising: the oil pan is arranged at the bottom of the box body, and an oil cavity and an oil outlet channel which are communicated are formed in the box body;
the gerotor pump of any one of claims 1-9, disposed in the crankcase, the second rotor assembly for pumping lubrication oil within the sump to the oil chamber, the first rotor assembly for pumping lubrication oil within the oil chamber to the oil outlet passage.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020201454568 | 2020-01-22 | ||
| CN202020145456 | 2020-01-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212985526U true CN212985526U (en) | 2021-04-16 |
Family
ID=75427152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021329527.6U Active CN212985526U (en) | 2020-01-22 | 2020-07-08 | Engine and rotor oil pump thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212985526U (en) |
-
2020
- 2020-07-08 CN CN202021329527.6U patent/CN212985526U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |