CN201165973Y - Engine oil pump with improved structure - Google Patents
Engine oil pump with improved structure Download PDFInfo
- Publication number
- CN201165973Y CN201165973Y CNU2007200422808U CN200720042280U CN201165973Y CN 201165973 Y CN201165973 Y CN 201165973Y CN U2007200422808 U CNU2007200422808 U CN U2007200422808U CN 200720042280 U CN200720042280 U CN 200720042280U CN 201165973 Y CN201165973 Y CN 201165973Y
- Authority
- CN
- China
- Prior art keywords
- rotor shaft
- pump
- pump housing
- oil
- pump body
- Prior art date
- 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
Links
- 239000010705 motor oil Substances 0.000 title abstract 4
- 230000006872 improvement Effects 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 59
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000007774 longterm Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000010710 diesel engine oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Rotary Pumps (AREA)
Abstract
The utility model relates to an engine oil pump with a modified structure, which comprises a pump body and a rear cover engaged with the pump body, wherein a stator is fixed on the internal wall of the pump body, a rotor shaft is disposed in the pump body, one end of the rotor shaft is engaged with the pump body, the other end of the rotor shaft penetrates through a through hole on the rear cover and extends out the pump body, and a rotor is fixed on the rotor shaft. The engine oil pump with a modified structure is characterized in that the pump body is an integrated structure, and the rotor shaft is provided with a ring-shaped step which is positioned on the through hole of the rear cover. The engine oil pump with a modified structure has the advantages that 1, the integrated pump body has high structural strength, can save manufacture cost, and can not break even used for a long time and conveyed multiple times, 2, an oil sump is arranged, which can effectively prevent oil leakage, and prolong service life, 3, the rotor shaft has strength remarkably improved, which is not easy to be bent, and the transmission efficiency is high.
Description
Technical field
The utility model relates to field of mechanical technique, especially relates to a kind of oil pump of improving structure.
Background technique
Oil pump is made up of component such as the pump housing, stator, rotors, is widely used in every profession and trade.The pump housing of tradition oil pump is dimeric, and its shortcoming is: complicated integral structure, need expend more material, and the junction is caused leakage of oil easily, causes precise decreasing easily in use or transportation process.In addition, stator axis causes fracture easily in long-term using process, and transmission efficiency is not high.For this reason, people have carried out long-term exploration, have proposed various solutions.
For example, Chinese patent literature discloses a kind of improved diesel engine oil pump [patent No.: 200420091807.2], its basic structure comprises: pump case, the rotor that is slidingly matched with the pump case inner chamber, be eccentrically set on the commentaries on classics core that rotor internal cavity engages with rotor internal cavity, the mandrel that cooperates with commentaries on classics core center hole, it is characterized in that: mandrel is designed to the multidiameter shaft structure, bigger diameter end is provided with coupling drive, and the utility model is by to the improvement of original oil pump mandrel structure, and the mandrel of pin-type load structure is improved to the multidiameter shaft structure, increase the radial dimension of coupling drive, the coupling drive bonding area is increased, reduce the wearing and tearing of mandrel and trunnion shaft coupling drive, ensure the lubricated of diesel engine.The somebody has invented a kind of oil pump pump shaft internal rotor assembly [patent No.: 200620126132.X], it is made up of internal rotor, pump shaft and pin, internal rotor is enclosed within on the pump shaft, on pump shaft, be provided with a through hole, pin is through in the through hole, and expose outside the through hole at the two ends of pin, it is characterized in that: on the internal rotor with the pin corresponding position, offer cotter way, the exposed junction of pin is embedded in the cotter way.
Though such scheme has improved the service behaviour of oil pump to a certain extent, has solved partial technical problems, still there is bigger defective, can't overcome above-mentioned shortcoming simultaneously.On the other hand, cause oil impregnate between the pump housing and the bonnet easily, build-up of pressure reduces, reduction of service life, and working efficiency is also lower.
Summary of the invention
The purpose of this utility model is at the problems referred to above, and a kind of structural strength height is provided, and good airproof performance is difficult for causing oil impregnate, high working efficiency, the oil pump of the improvement structure of long service life.
For achieving the above object, the utility model has adopted following technical proposal: the oil pump of this improvement structure, comprise a pump housing, the bonnet that matches with the pump housing, stator is fixed on the inwall of the pump housing, in the pump housing, be provided with a roots rotor axle, one end of rotor shaft matches with the pump housing, the other end passes the through hole on the bonnet and extends to outside the pump housing, rotor is fixed on the above-mentioned rotor shaft, it is characterized in that, the described pump housing is an integral structure, described rotor shaft has a ring-shaped step, and this ring-shaped step is positioned at the through hole of bonnet.
The utility model creatively adopts integral structure with the pump housing, and so effectively economical with materials reduces cost, and can improve the intensity of whole housing, prevents leakage of oil, also can not occur breaking through long-term use or long-distance carrying.In addition, the intensity that ring-shaped step can effectively improve whole rotor shaft is set on rotor shaft, in rotation process, is difficult for taking place deformation, improve transmission efficiency, increase the service life.
In the oil pump of above-mentioned improvement structure, the joint of the described pump housing and bonnet is provided with oil inlet hole and the oil outlet that is positioned on the pump housing, have at least one oil groove that is positioned at the pump housing and bonnet joint at pump housing inwall, one end of this oil groove is connected with oil inlet hole, and the other end extends along the inwall of the pump housing.
Because be provided with oil groove, and an end of oil groove and oil inlet hole connection, the other end and oil outlet are isolated, and in use can effectively prevent oil impregnate.When work, the oil impregnate between the pump housing and the bonnet enters oil groove, and is back in the oil inlet hole.Solve the pressure reduction that oil impregnate causes effectively by this structure, prolonged working life.
The mode that is connected of rotor and rotor shaft can have multiple, in the oil pump of above-mentioned improvement structure, has a mounting hole on the described rotor shaft, is inserted with one and is used for rotor is fixed on pivot pin on the rotor shaft in mounting hole.
In the oil pump of above-mentioned improvement structure, described bonnet is bolted on the pump housing by some, is provided with gasket seal on bolt.Gasket seal is set effectively improves sealability.
In addition, in the oil pump of above-mentioned improvement structure, described gasket seal is made by copper material.
Compared with prior art, the advantage of the oil pump of this improvement structure is:
1. adopt the pump housing of integral type, the structural strength height can be saved manufacture cost, though through long-term use and repeatedly carrying can not break yet.2. owing to be provided with oil groove, can effectively prevent from oil impregnate to increase the service life.3. the intensity of rotor shaft significantly improves, and is difficult for causing bending, the transmission efficiency height.
Description of drawings
Fig. 1 is the sectional structure schematic representation that the utility model provides.
Fig. 2 is the side-looking structural representation that the utility model provides.
Fig. 3 is the sectional structure schematic representation of the pump housing that provides of the utility model.
Among the figure, the pump housing 1, oil inlet hole 11, oil outlet 12, oil groove 13, bonnet 2, through hole 21, stator 3, rotor shaft 4, ring-shaped step 41, mounting hole 42, pivot pin 43, rotor 5, bolt 6, gasket seal 61.
Embodiment
As shown in Figure 1, improve the oil pump of structure, comprise a pump housing 1, the bonnet 2 that matches with the pump housing 1, stator 3 is fixed on the inwall of the pump housing 1, is provided with a roots rotor axle 4 in the pump housing 1, and an end of rotor shaft 4 matches with the pump housing 1, the other end passes the through hole 21 on the bonnet 2 and extends to outside the pump housing 1, and rotor 5 is fixed on the above-mentioned rotor shaft 4.
The pump housing 1 is an integral structure, and so effectively economical with materials reduces cost, and can improve the intensity of whole housing, prevents leakage of oil, also can not occur breaking through long-term use or long-distance carrying.
Rotor shaft 4 has a ring-shaped step 41, and this ring-shaped step 41 is positioned at through hole 21 places of bonnet 2.The intensity that ring-shaped step can effectively improve whole rotor shaft is set on rotor shaft, in rotation process, is difficult for taking place deformation, improve transmission efficiency, increase the service life.
Shown in Fig. 2 and 3, the pump housing 1 is provided with oil inlet hole 11 and the oil outlet 12 that is positioned on the pump housing 1 with the joint of bonnet 2, have at least one oil groove 13 that is positioned at the pump housing 1 and bonnet 2 joints at the pump housing 1 inwall, one end of this oil groove 13 is connected with oil inlet hole 11, and the other end extends along the inwall of the pump housing 1.Because be provided with oil groove, and an end of oil groove and oil inlet hole connection, the other end and oil outlet are isolated, and in use can effectively prevent oil impregnate.When work, the oil impregnate between the pump housing and the bonnet enters oil groove, and is back in the oil inlet hole.Solve the pressure reduction that oil impregnate causes effectively by this structure, prolonged working life.
Have a mounting hole 42 on the rotor shaft 4, in mounting hole 42, be inserted with one and be used for rotor 5 is fixed on pivot pin 43 on the rotor shaft 4.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as the pump housing 1, oil inlet hole 11, oil outlet 12, oil groove 13, bonnet 2, through hole 21, stator 3, rotor shaft 4, ring-shaped step 41, mounting hole 42, pivot pin 43, rotor 5, bolt 6, gasket seal 61 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (4)
1. oil pump of improving structure, comprise a pump housing (1), the bonnet (2) that matches with the pump housing (1), stator (3) is fixed on the inwall of the pump housing (1), in the pump housing (1), be provided with a roots rotor axle (4), one end of rotor shaft (4) matches with the pump housing (1), the other end passes the through hole (21) on the bonnet (2) and extends to outside the pump housing (1), rotor (5) is fixed on the above-mentioned rotor shaft (4), it is characterized in that, the described pump housing (1) is an integral structure, and described rotor shaft (4) has a ring-shaped step (41), and this ring-shaped step (41) is positioned at the through hole (21) of bonnet (2) and locates.
2. the oil pump of improvement structure according to claim 1 is characterized in that, has a mounting hole (42) on the described rotor shaft (4), is inserted with one and is used for rotor (5) is fixed on pivot pin (43) on the rotor shaft (4) in mounting hole (42).
3. the oil pump of improvement structure according to claim 1 is characterized in that, described bonnet (2) is fixed on the pump housing (1) by some bolts (6), is provided with gasket seal (61) on bolt (6).
4. the oil pump of improvement structure according to claim 3 is characterized in that, described gasket seal (61) is made by copper material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200422808U CN201165973Y (en) | 2007-11-15 | 2007-11-15 | Engine oil pump with improved structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200422808U CN201165973Y (en) | 2007-11-15 | 2007-11-15 | Engine oil pump with improved structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201165973Y true CN201165973Y (en) | 2008-12-17 |
Family
ID=40191359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200422808U Expired - Fee Related CN201165973Y (en) | 2007-11-15 | 2007-11-15 | Engine oil pump with improved structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201165973Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047133A (en) * | 2011-10-12 | 2013-04-17 | 沈建光 | Energy-saving oil pump |
-
2007
- 2007-11-15 CN CNU2007200422808U patent/CN201165973Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047133A (en) * | 2011-10-12 | 2013-04-17 | 沈建光 | Energy-saving oil pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20091215 |