CN202992600U - Variable displacement oil pump - Google Patents
Variable displacement oil pump Download PDFInfo
- Publication number
- CN202992600U CN202992600U CN 201220521465 CN201220521465U CN202992600U CN 202992600 U CN202992600 U CN 202992600U CN 201220521465 CN201220521465 CN 201220521465 CN 201220521465 U CN201220521465 U CN 201220521465U CN 202992600 U CN202992600 U CN 202992600U
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- Prior art keywords
- pump
- cavity
- oil
- slide block
- rotor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
The utility model relates to the technical field of engine oil pumps, in particular to an oil pump. A variable displacement oil pump comprises a pump body. An inner rotor, an outer rotor and a high pressure oil chamber behind the pump are arranged inside the pump body. The inner rotor is sleeved on the inner side of the outer rotor, a gap is reserved between the inner rotor and the outer rotor, and the inner rotor and the outer rotor can rotate in a mutual mode. A control sliding block is connected on the periphery of the outer rotor in a pressing mode, and the control sliding block and the pump body are in movable connection. A cavity is arranged inside the pump body, the cavity is used as a safety cavity, and the safety cavity is arranged on the outer side of the control sliding block and communicated with the high pressure oil chamber behind the pump. The control sliding block is further connected with a reset spring. The control sliding block is connected with the pump body through a spindle, and the spindle is placed at the position below the safety cavity. According to the variable displacement oil pump, under the condition that cost is not increased, a traditional form safety cavity is replaced, space and materials are saved, and wasted energy consumption is removed.
Description
Technical field
The utility model relates to technical field of engines, is specifically related to a kind of oil pump.
Background technique
In prior art, displacement-variable oil pump adopts safety valve to come control pump system Maximum safe pressure, to prevent overpressure.But this traditional safety valve has following defective: 1, need extra spring and valve (as steel ball), increased cost; 2, when the oil pump outlet pressure exceeds permission range, go out the oil pressure Compress Spring, open valve and the pressure release of conventional security valve, like this, just wasted the machine oil kinetic energy that oil pump is additionally done work and produced, make it not do any useful work with regard to the discharge system; 3, safety valve needs extra arrangement space and far away apart from the working rotor zone, makes the oil pump overall dimensions increase and the safety control reaction velocity slows down, and affects system's hydraulic pressure pulsed operation characteristic.
The model utility content
The purpose of this utility model is, provides to be provided with the displacement-variable oil pump of controlling slide block and safe chamber in a kind of, solves above technical problem.
The technical problem that the utility model solves can realize by the following technical solutions:
Displacement-variable oil pump comprises the pump housing, is provided with high-voltage oil cavity after internal rotor, external rotor and pump in the pump housing; Described internal rotor is enclosed within the inboard of described external rotor, leaves the gap between both, and can mutually rotate, and it is characterized in that:
The periphery of described external rotor is crimped with one and controls slide block, is rotatably connected between described control slide block and the described pump housing;
Be provided with a cavity in the described pump housing, as safe chamber, described safe chamber is located at the outside of described control slide block with described cavity, and is connected with high-voltage oil cavity after described pump.High Pressure in safe chamber is at the whole side direction contact surface of controlling slide block, so that exert pressure by lever principle.
Described control slide block also is connected with a Returnning spring.
Described safe chamber is connected with high-voltage oil cavity after described pump by an oil transportation channel.
Described control slide block is connected with the described pump housing by rotating shaft, and described rotating shaft is positioned at described safe chamber lower position.
Beneficial effect: owing to adopting technique scheme, the utility model is the working principle for displacement-variable oil pump, be provided with the control slide block in the pump housing, and utilize pump discharge pressure extra safe chamber is set near slide block removes control oil pump system Maximum safe pressure controlling, thereby prevent overpressure.Like this, replace traditional safety valve in the cost situation not increasing, saved space and material, and rejected the energy consumption of waste.
Description of drawings
Accompanying drawing is the internal structure schematic diagram of the pump housing described in the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose with effect is easy to understand, below in conjunction with the further elaboration the utility model of concrete diagram.
With reference to accompanying drawing, displacement-variable oil pump described in the utility model comprises the pump housing 4, is provided with high-voltage oil cavity 1 after internal rotor 9, external rotor 7 and pump in the pump housing 4, and described internal rotor 9 is enclosed within described external rotor 7 inboards, leaves the gap between both, and can mutually rotate.
The periphery of described external rotor 7 is crimped with one and controls slide block 6, and 4 of described control slide block 6 and the described pump housings are rotatably connected, and specifically, described control slide block 6 is connected with the described pump housing 4 by rotating shaft 11.Described control slide block 6 also is connected with a Returnning spring 10.
Be provided with a cavity in the described pump housing 4, with described cavity as safe chamber 3.Described safe chamber 3 is located at the outside of described control slide block 6, and is connected with high-voltage oil cavity 1 after described pump by an oil transportation channel 2.
Described rotating shaft 11 is positioned at described safe chamber 3 lower positions, and the High Pressure in safe chamber 3 is at the whole side direction contact surface of controlling slide block 6, so that exert pressure to controlling slide block 6 by lever principle.
During work, after pump the feedback oil pressure by pump after the safe chambers 3 that arrive in the pump housings 4 by oil transportation channel 2 of high-voltage oil cavity 1, the thrust of its generation is on the side direction pressure-bearing curved surface of controlling slide block 6, can promote to control slide block 6 operations by its moment that produces around axle sleeve, controlling slide block 6 actions can make external rotor 7 and the degree of eccentricity of internal rotor 9 reduce, thereby reduced the pump oil mass, reduced and oil pressure.Its safety pressure starts size and is determined by the spring 10 opposite moments of precompressions generation.
Specifically, compared with prior art, the utlity model has following advantage:
1. the conventional security valve needs extra spring and valve (as steel ball), has increased cost, and the utility model does not need these parts to reach the purpose of same control maximum pressure, reduces the oil pump manufacture cost.
2. in prior art, when the oil pump outlet pressure exceeds permission range, go out the oil pressure Compress Spring, open valve and the pressure release of conventional security valve, wasted like this machine oil kinetic energy that oil pump is additionally done work and produced, make it not do any useful work with regard to the discharge system.And the utility model utilizes displacement-variable oil pump eccentricity control principle, making pump discharge pressure carry out closed-loop feedback to oil hydraulic-pump rotor controls, directly reduce the degree of eccentricity between the oil pump inner and outer rotors, make the oil pump acting reduce, the pump oil pressure reduces, be that spent driving torque and the energy reduces, saved oil consumption.
3. the conventional security valve needs extra arrangement space and far away apart from the working rotor zone, makes the oil pump overall dimensions increase and the safety control reaction velocity slows down, and affects system's hydraulic pressure pulsed operation characteristic.And the utility model meets the main trend of compact design, and flexible arrangement in needing the high request hydraulic systems of small size, identical performance, near the working rotor zone, can to the oil pressure rapid feedback, reduce the superpressure risk due to it more.
Above demonstration and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. displacement-variable oil pump, comprise the pump housing, is provided with high-voltage oil cavity after internal rotor, external rotor and pump in the pump housing; Described internal rotor is enclosed within the inboard of described external rotor, leaves the gap between both, and can mutually rotate, and it is characterized in that:
The periphery of described external rotor is crimped with one and controls slide block, is rotatably connected between described control slide block and the described pump housing;
Be provided with a cavity in the described pump housing, as safe chamber, described safe chamber is located at the outside of described control slide block with described cavity, and is connected with high-voltage oil cavity after described pump.
2. displacement-variable oil pump according to claim 1, it is characterized in that: described control slide block also is connected with a Returnning spring.
3. displacement-variable oil pump according to claim 2, it is characterized in that: described safe chamber is connected with high-voltage oil cavity after described pump by an oil transportation channel.
4. according to claim 1-3 described displacement-variable oil pumps of any one, it is characterized in that: described control slide block is connected with the described pump housing by rotating shaft, and described rotating shaft is positioned at described safe chamber lower position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220521465 CN202992600U (en) | 2012-10-12 | 2012-10-12 | Variable displacement oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220521465 CN202992600U (en) | 2012-10-12 | 2012-10-12 | Variable displacement oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202992600U true CN202992600U (en) | 2013-06-12 |
Family
ID=48563778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220521465 Expired - Fee Related CN202992600U (en) | 2012-10-12 | 2012-10-12 | Variable displacement oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202992600U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314637A (en) * | 2014-08-19 | 2015-01-28 | 湖南机油泵股份有限公司 | Oil pump of internal combustion engine |
| CN104633428A (en) * | 2014-12-10 | 2015-05-20 | 马勒技术投资(中国）有限公司 | Variable-displacement oil pump capable of reducing cyclic liquid load |
-
2012
- 2012-10-12 CN CN 201220521465 patent/CN202992600U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314637A (en) * | 2014-08-19 | 2015-01-28 | 湖南机油泵股份有限公司 | Oil pump of internal combustion engine |
| CN104633428A (en) * | 2014-12-10 | 2015-05-20 | 马勒技术投资(中国）有限公司 | Variable-displacement oil pump capable of reducing cyclic liquid load |
| CN104633428B (en) * | 2014-12-10 | 2017-02-22 | 马勒技术投资(中国）有限公司 | Variable-displacement oil pump capable of reducing cyclic liquid load |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20201012 |