CN210800670U - Variable displacement vane type oil pump - Google Patents
Variable displacement vane type oil pump Download PDFInfo
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- CN210800670U CN210800670U CN201921454214.0U CN201921454214U CN210800670U CN 210800670 U CN210800670 U CN 210800670U CN 201921454214 U CN201921454214 U CN 201921454214U CN 210800670 U CN210800670 U CN 210800670U
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- pump
- control ring
- distribution groove
- oil
- variable displacement
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Abstract
A variable displacement vane-type oil pump comprises a pump shell and a control ring, wherein the pump shell is provided with a pump chamber, and the control ring is movably arranged in the pump chamber to change the displacement of the pump; the pump shell comprises a pump body and a pump cover, and the pump body and the pump cover are connected with each other; the pump body is close to the terminal surface of pump cover one end and is equipped with import distribution groove and export distribution groove, and wherein, at least one terminal surface of control ring is equipped with the guiding gutter along the circumference extension of control ring, and the one end of each guiding gutter is close to export distribution groove, and the other end of each guiding gutter is close to import distribution groove. The utility model discloses can reduce the probability that the high-pressure oil of export distribution groove department leaked to variable feedback chamber, make the oil pressure in variable feedback chamber not disturbed.
Description
Technical Field
The utility model relates to a variable displacement vane type oil pump.
Background
The variable displacement vane type oil pump mainly comprises a pump shell, a control ring, a rotating pin, a return spring, a rotor, a plurality of vanes and the like. The pump housing has a pump chamber, a control ring pivotally connected to the pump housing by a pivot pin, the control ring being movably disposed within the pump chamber to vary the displacement of the pump. A variable feedback chamber is provided between a portion of the inner surface of the pump chamber and the outer surface of the control ring, the variable feedback chamber receiving oil from the main gallery of the variable displacement vane engine pump to generate a force to move the control ring to vary the displacement of the pump. A return spring is disposed between the pump housing and the control ring for applying a biasing force to the control ring. A rotor is disposed within the central bore of the control ring, the rotor having an axis of rotation offset from the central axis of the control ring. One end of each vane is slidably disposed in the rotor slot and the other end abuts the inner surface of the control ring. Each adjacent two of the vanes, the rotor, and the inner surface of the control ring collectively define a working chamber. When the rotor rotates from the oil suction side (low pressure side) to the oil discharge side (high pressure side), the plurality of blades also rotate along with the rotor, the volume of the working chamber can change, oil is sucked from small to large and then is pressed from large to small, and the rotor rotates for a circle to finish oil suction and oil discharge once.
The pump shell consists of a pump body and a pump cover which are mutually butted, a first outlet distribution groove communicated with an outlet of the oil pump and a first inlet distribution groove communicated with an inlet of the oil pump are arranged on the end surface of the pump body, and a second outlet distribution groove in mirror symmetry with the first outlet distribution groove and a second inlet distribution groove in mirror symmetry with the first inlet distribution groove are also arranged on the end surface of the pump cover of most variable displacement vane type oil pumps.
In the existing variable displacement vane type oil pump, high-pressure oil at an outlet distribution groove leaks to a variable feedback cavity through an end surface gap, so that the oil pressure in the variable feedback cavity is increased, the oil pressure in the variable feedback cavity is larger than the oil pressure of a main oil duct of the variable displacement vane type oil pump, and the variable opening of the oil pump is further advanced. In the case where the oil pump is in high-speed operation, the phenomenon of variable opening advance may result in insufficient oil supply capability of the oil pump.
Disclosure of Invention
The utility model aims to solve the technical problem that a variable displacement vane type oil pump is provided, its probability that can reduce the high-pressure oil leakage of export distribution groove department to variable feedback chamber makes the oil pressure in variable feedback chamber not disturbed.
The embodiment of the utility model provides a variable displacement vane type oil pump, including pump case and control ring, the pump case has the pump chamber, and the control ring is movably arranged in the pump chamber to change the displacement of the pump; the pump shell comprises a pump body and a pump cover, and the pump body and the pump cover are connected with each other; the pump body is close to the terminal surface of pump cover one end and is equipped with import distribution groove and export distribution groove, and wherein, at least one terminal surface of control ring is equipped with the guiding gutter along the circumference extension of control ring, and the one end of each guiding gutter is close to export distribution groove, and the other end of each guiding gutter is close to import distribution groove.
After the technical scheme is adopted, the utility model discloses following advantage and characteristics have at least:
the guide groove is arranged on the end face of the control ring, and the guide groove can guide oil leaking from the outlet distribution groove through the end face gap to flow to the inlet distribution groove, so that the probability that the leaked oil of the outlet distribution groove flows to the variable feedback cavity is greatly reduced, the oil pressure of the variable feedback cavity is prevented from being interfered, and the oil pump is ensured to still have sufficient oil supply capacity under the condition of high-speed operation.
Drawings
Fig. 1 is a schematic diagram illustrating an overall structure of a variable displacement vane type oil pump according to an embodiment of the present invention after a pump cover is removed.
Fig. 2 shows a schematic structural diagram of a control loop according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a pump cover of a variable displacement vane type oil pump according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Please refer to fig. 1 to 3. The variable displacement vane type oil pump according to an embodiment of the present invention includes a pump housing, a control ring 2, a rotation pin 3, a return spring 4, a rotor 5, and a plurality of vanes 6.
The pump case includes a pump body 11 and a pump cover 12, and the pump body 11 and the pump cover 12 are connected to each other. An inlet distribution groove 13 and an outlet distribution groove 14 are formed in the end face, close to one end of the pump cover, of the pump body 11, the inlet distribution groove 13 is communicated with an engine oil inlet 15 of the variable displacement vane type engine oil pump, and the outlet distribution groove 14 is communicated with an engine oil outlet 16 of the variable displacement vane type engine oil pump. In this embodiment, the end surface of the pump cover 12 near the pump body 11 is further provided with an inlet distribution groove 17 mirror-symmetrical to the inlet distribution groove 13 and an outlet distribution groove 18 mirror-symmetrical to the outlet distribution groove 14.
The pump housing has a pump chamber 10, and the control ring 2 is pivotally connected to the pump housing by a rotation pin 3. The control ring 2 is movably disposed within the pump chamber 10 to vary the displacement of the pump. Between a portion of the inner surface of the pump chamber 10 and the outer surface of the control ring 2 is a variable feedback chamber 19, the variable feedback chamber 19 receiving oil from the main gallery of a variable displacement vane type oil pump to generate a force to move the control ring 2 to vary the displacement of the pump. A return spring 4 is provided between the pump housing and the control ring to apply a biasing force to the control ring 2. The rotor 5 is arranged in the central hole 20 of the control ring 2, the rotor 5 having an axis of rotation offset from the central axis of the control ring 2. One end of each vane 6 is slidably disposed in the rotor groove, and the other end abuts against the inner surface of the control ring 2.
In this embodiment, two end surfaces of the control ring 2 are respectively provided with a diversion trench 21 extending along the circumferential direction of the control ring 2, one end 211 of each diversion trench 21 is close to the outlet distribution trench 14, the other end 212 of each diversion trench 21 is close to the inlet distribution trench 13, and oil leaking from the outlet distribution trench 14 through the end surface gap can flow into the inlet distribution trench 13 through the diversion trench 21.
Further, the other end 212 of each guide groove 21 penetrates the central hole 20 of the control ring 2, so that the oil in the guide groove 21 can directly flow into the inlet distribution groove 13.
In other embodiments, a diversion groove extending along the circumferential direction of the control ring 2 may be provided on any one of the end faces of the control ring 2 to divert oil leaking from the outlet distribution groove through the end face gap toward the inlet distribution groove.
In the embodiment, the end face of the control ring is provided with the guide groove, and the guide groove can discharge oil leaked from the end face gap back to the engine oil inlet of the variable displacement vane type engine oil pump, so that the oil pressure (main oil gallery oil pressure) in the variable feedback cavity of the oil pump at high speed and high pressure is prevented from being influenced by the oil pressure at the outlet of the oil pump.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (3)
1. A variable displacement vane-type oil pump comprising a pump housing having a pump chamber and a control ring movably disposed within the pump chamber to vary the displacement of the pump; the pump shell comprises a pump body and a pump cover, and the pump body and the pump cover are connected with each other; the pump body is close to the terminal surface of pump cover one end is equipped with import distribution groove and export distribution groove, its characterized in that, at least one terminal surface of control ring is equipped with along the guiding gutter of control ring's circumference extension, the one end of each guiding gutter is close to export distribution groove, the other end of each guiding gutter is close to import distribution groove.
2. The variable displacement vane-type oil pump of claim 1, wherein the control ring is provided with guide grooves on both end surfaces.
3. A variable displacement vane-type oil pump according to claim 1 or 2, wherein the other end of each of the guide grooves penetrates through the center hole of the control ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921454214.0U CN210800670U (en) | 2019-09-03 | 2019-09-03 | Variable displacement vane type oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921454214.0U CN210800670U (en) | 2019-09-03 | 2019-09-03 | Variable displacement vane type oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210800670U true CN210800670U (en) | 2020-06-19 |
Family
ID=71229673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921454214.0U Active CN210800670U (en) | 2019-09-03 | 2019-09-03 | Variable displacement vane type oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210800670U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283101A (en) * | 2020-11-04 | 2021-01-29 | 湖南机油泵股份有限公司 | Variable displacement oil pump with accurate slider positioning |
-
2019
- 2019-09-03 CN CN201921454214.0U patent/CN210800670U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283101A (en) * | 2020-11-04 | 2021-01-29 | 湖南机油泵股份有限公司 | Variable displacement oil pump with accurate slider positioning |
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