CN203784615U - Diesel engine oil pump - Google Patents
Diesel engine oil pump Download PDFInfo
- Publication number
- CN203784615U CN203784615U CN201420117781.8U CN201420117781U CN203784615U CN 203784615 U CN203784615 U CN 203784615U CN 201420117781 U CN201420117781 U CN 201420117781U CN 203784615 U CN203784615 U CN 203784615U
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- pump
- rotor
- diesel engine
- teeth
- 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 - Lifetime
Links
- 239000010710 diesel engine oil Substances 0.000 title claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 46
- 239000003921 oil Substances 0.000 claims abstract description 24
- 239000004677 Nylon Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 4
- 229920001778 nylon Polymers 0.000 claims abstract description 4
- 238000001746 injection moulding Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Rotary Pumps (AREA)
Abstract
The utility model discloses a diesel engine oil pump. The diesel engine oil pump comprises a transmission gear, a transmission shaft, a pump body, a pump cover, an inner rotor and an outer rotor, wherein the inner rotor and the transmission shaft are in interference fit; the outer rotor is embedded in the pump body; the number of teeth of the outer rotor is one more than that of the inner rotor, and an oil cavity is formed between the outer rotor and the inner rotor; an oil inlet and an oil outlet which are communicated with the oil cavity are formed in the pump cover; the pump cover and the pump body are connected and fixed through screws; the transmission shaft and the transmission gear are made of a nylon material; the transmission shaft is a double-flat square shaft, a double-flat-square hole is formed in the transmission gear, and transmission is carried out by the transmission shaft and the transmission gear through a double-flat-square structure. The diesel engine oil pump has the advantages of simple structure, short production cycle and convenience in mounting and disassembly.
Description
Technical field
The utility model belongs to oil pump technology field, is specifically related to a kind of diesel engine oil pump.
Background technique
At present on market 10-20KW diesel engine have the call, the lubricating machine oil pump of its motor adopts main structure principle: drive oil pump gear by motor driving wheel, oil pump gear drives transmission shaft by coordinating with flat side on transmission shaft, transmission shaft drives internal rotor by pin again, internal rotor and external rotor are poor by the number of teeth, in mutually rotating, form negative pressure of vacuum, machine oil is smoked from fuel tank bottom and be transported to motor and need lubricant housings.In the middle of its middle gear and transmission shaft, metal inserted piece can be set, further connect gear and rotatingshaft.But such fuel pump structure, part processed complex, operation is many, and the cycle is long, and installation and removal are simultaneously all inconvenient.
Model utility content
The purpose of this utility model is: various for existing oil pump assembly, and processing technology complexity, the problem that the manufacture cycle is long, provides a kind of diesel engine oil pump.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of diesel engine oil pump, comprises driving gear, transmission shaft, the pump housing, pump cover, internal rotor, external rotor, internal rotor and transmission shaft interference fit; External rotor is embedded in the pump housing; External rotor, than the many teeth of internal rotor, forms an oil pocket between external rotor and internal rotor; Pump cover is provided with the filler opening and the oil outlet that are communicated with oil pocket; Pump cover and the pump housing are connected by screw fixing; Transmission shaft and driving gear adopt nylon material to make; Described transmission shaft is two flat square shafts, and driving gear is provided with two flat square holes, and transmission shaft and driving gear are by two flat square structure transmissions.
Preferably, it is one-body molded that described transmission shaft and driving gear can also adopt the mode of injection moulding.
Preferably, external rotor is provided with eight teeth, and internal rotor is provided with seven teeth.
Preferably, external rotor is provided with five teeth, and internal rotor is provided with four teeth
Owing to having adopted technique scheme, the beneficial effects of the utility model are:
A kind of diesel engine oil pump of the present utility model, transmission shaft adopts two flat square structures to be connected with gear, reduce metal inserted piece, it between transmission shaft and internal rotor, is interference fit, omitted locating stud, made like this oil pump part reduce, operation reduces, structure becomes simply, mounts and dismounts also more convenient; Can also adopt the mode of injection moulding one-body molded transmission shaft and gear simultaneously, reduce the problem that gear and transmission shaft easily break down by the mode of assembling, also save certain manufacture cycle.
Brief description of the drawings
Fig. 1 is that master of the present utility model looks whole-cutaway view.
Fig. 2 is the A-A sectional view of Fig. 1.
Mark in figure: 1-transmission shaft, 2-driving gear, the 3-pump housing, 4-screw, 5-oil inlet hole, 6-pump cover, 7-oil outlet, 8-internal rotor, 9-external rotor, 10-oil pocket.
Embodiment
With reference to Fig. 1-2, a kind of diesel engine oil pump, comprises driving gear 2, transmission shaft 1, the pump housing 3, pump cover 6, internal rotor 8, external rotor 9.Internal rotor 8 and transmission shaft 1 interference fit; External rotor 9 is embedded in the pump housing 3; External rotor 9 is than more than 8 teeth of internal rotor, and external rotor 9 arranges eight teeth, and internal rotor 8 arranges seven teeth, and other numbers of teeth can certainly be set.Fuel pump structure of the present utility model is also applicable to various cycloidal rotor oil pump, and its number of teeth is characterized as external rotor 9 compared with internal rotor more than 8 one teeth, and such as external rotor is established five teeth, internal rotor 8 is established four teeth etc.
Between external rotor 9 and internal rotor 8, form an oil pocket 10.Pump cover 6 is provided with the oil inlet hole 5 and the oil outlet 7 that are communicated with oil pocket 10; Pump cover 6 and the pump housing 3 are connected and fixed by screw 4.Transmission shaft 1 and driving gear 2 adopt nylon material to make.Transmission shaft 1 coordinated with internal rotor 8 by pin in the past, was improved to transmission shaft 1 and press-fited interference fit with internal rotor 8.Save the bore process of transmission shaft 1, saved the cooperating structure of internal rotor 8 with pin, simplified packaging technology, improved quality of fit, solved the axial float problem of transmission shaft 1, effectively promoted product stability.
Transmission shaft 1 is two flat square shafts, and driving gear 2 is provided with two flat square holes, and transmission shaft 1 and driving gear 2 are by two flat square structure transmissions.The flat side of transmission shaft 1 milling one side was improved to the two-sided flat side of cold-heading in the past, reduced transmission shaft 1 manufacturing procedure, improved work efficiency, shortened the manufacture cycle.
Transmission shaft 1 and driving gear 2 can also adopt the mode of injection moulding one-body molded, have saved like this compounding operation of transmission shaft 1 and driving gear 2, further shorten the manufacture cycle.
Claims (4)
1. a diesel engine oil pump, is characterized in that, comprises driving gear (2), transmission shaft (1), the pump housing (3), pump cover (6), internal rotor (8), external rotor (9), internal rotor (8) and transmission shaft (1) interference fit; External rotor (9) is embedded in the pump housing (3); External rotor (9), than the many teeth of internal rotor (8), forms an oil pocket (10) between external rotor (9) and internal rotor (8); Pump cover (6) is provided with the oil inlet hole (5) and the oil outlet (7) that are communicated with oil pocket (10); Pump cover (6) and the pump housing (3) are connected and fixed by screw (4); Transmission shaft (1) and driving gear (2) adopt nylon material to make; Described transmission shaft (1) is two flat square shafts, and driving gear (2) is provided with two flat square holes, and transmission shaft (1) and driving gear (2) are by two flat square structure transmissions.
2. diesel engine oil pump according to claim 1, is characterized in that, described transmission shaft (1) and driving gear (2) can also adopt the mode of injection moulding one-body molded.
3. diesel engine oil pump according to claim 1, is characterized in that, external rotor (9) is provided with eight teeth, and internal rotor (8) is provided with seven teeth.
4. diesel engine oil pump according to claim 1, is characterized in that, external rotor (9) is provided with five teeth, and internal rotor (8) is provided with four teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420117781.8U CN203784615U (en) | 2014-03-15 | 2014-03-15 | Diesel engine oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420117781.8U CN203784615U (en) | 2014-03-15 | 2014-03-15 | Diesel engine oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203784615U true CN203784615U (en) | 2014-08-20 |
Family
ID=51320802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420117781.8U Expired - Lifetime CN203784615U (en) | 2014-03-15 | 2014-03-15 | Diesel engine oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203784615U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406033A (en) * | 2014-11-07 | 2015-03-11 | 南京淳腾机械配件厂（普通合伙） | Oil pump |
| CN112112952A (en) * | 2020-09-15 | 2020-12-22 | 东风格特拉克汽车变速箱有限公司 | Novel mechanical oil pump driven by main reduction gear |
-
2014
- 2014-03-15 CN CN201420117781.8U patent/CN203784615U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406033A (en) * | 2014-11-07 | 2015-03-11 | 南京淳腾机械配件厂（普通合伙） | Oil pump |
| CN112112952A (en) * | 2020-09-15 | 2020-12-22 | 东风格特拉克汽车变速箱有限公司 | Novel mechanical oil pump driven by main reduction gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 643000 Zigong high tech Industrial Park, Sichuan, Rong Chuan Road, No. 9 Patentee after: ZIGONG CHUANLI TECHNOLOGY Co.,Ltd. Address before: 643000 Zigong city of Sichuan Province, Ziliujing District hi tech Industrial Zone, Rong Sichuan Road No. 9 Patentee before: ZIGONG CHUANLI INDUSTRY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |