CN203477849U - Plastic shell oil pump - Google Patents
Plastic shell oil pump Download PDFInfo
- Publication number
- CN203477849U CN203477849U CN201320568458.8U CN201320568458U CN203477849U CN 203477849 U CN203477849 U CN 203477849U CN 201320568458 U CN201320568458 U CN 201320568458U CN 203477849 U CN203477849 U CN 203477849U
- Authority
- CN
- China
- Prior art keywords
- gear
- oil pump
- plastic
- shaft
- shell oil
- 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
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Abstract
The utility model discloses a plastic shell oil pump. The plastic shell oil pump mainly solves the problems that an existing oil pump is heavy, complex in structure and difficult to assemble. The plastic shell oil pump is characterized in that a pump shell (1) is of a two-body structure, the two bodies are mutually buckled, the pump shell (1) is provided with a circular gear chamber (11), the gear chamber (11) is internally provided with a shaft base (12), a shaft sleeve (13) and a limiting base (14), a gear shaft (2) is composed of a center shaft (21) and a plastic gear (22), the plastic gear (22) is arranged on the center shaft (21) in an injection molding mode, the center shaft (21) penetrates out along the shaft sleeve (13), the side wall of one end of the plastic gear (22) is provided with a semicircular groove (23), the side wall of the gear chamber (11) is provided with a pin (3) penetrating through the limiting base (14), and the pin (3) is located inside the groove (23). The plastic shell is adopted, and therefore the plastic shell oil pump has the advantages of being light, simple in structure and convenient to assemble.
Description
Technical field
The utility model relates to a kind of oil pump, is specifically related to a kind of shell oil pump of moulding.
Background technique
Oil pump is for engine oil pressure being raise and guaranteeing that certain oil mass is to the device of each friction surface pressure fuel feeding, oil pump is mainly divided into gear type oil pump and rotor-type oil pump, gear type oil pump is wherein simple in structure, easy to process, reliable operation, long service life, pump oil pressure is high, is used widely.Gear type oil pump comprises pump case, driving gear and driven gear, driving gear is connected with external power supply by main drive shaft, with transmitting torque, make oil pump work, for some miniature gasoline engines, because overall structure is less, the structure space of oil pump is also restricted, driving gear and main drive shaft are processed into integral structure, gear shaft structure namely, gear shaft generally adopts metal to process, need the machine adding methods such as gear hobbing, gear shaping or mill teeth to complete adding man-hour profile of tooth, work efficiency is low, and processing cost is high; And pump case is generally to adopt aluminum alloy cast form, weight is heavier, due to the restriction of casting technique, adopts shaft block ring, axle sleeve etc. to carry out spacing to the axial limiting of gear shaft, complex structure, assembling trouble.
Model utility content
In order to overcome, existing oil pump weight is heavier, the deficiency of complex structure and assembling trouble, and the utility model provides a kind of shell oil pump of moulding, and this moulds the housing that shell oil pump adopts plastics forming, has weight lighter, simple in structure and be convenient to the feature of assembling.
The technical solution of the utility model is: a kind of two body structures of shell oil pump pump case for mutually fastening of moulding, pump case is provided with gear chamber, gear chamber is circular, in gear chamber, be provided with axle bed, axle sleeve and position limit socket, gear shaft is comprised of central shaft and plastic gear, and plastic gear is injection-moulded on central shaft, central shaft passes along axle sleeve, one end sidewall of plastic gear is provided with semi-circular recesses, and the sidewall of gear chamber is provided with the pin that penetrates position limit socket, and pin is positioned at groove.
Described pump case is provided with mounting ear, on mounting ear with through hole.
Described mounting ear is 2 and is symmetrical arranged.
The utlity model has following beneficial effect: owing to taking such scheme, pump shell structure is simple, by injection moulding mode, processes, cost is low, and it is high producing effect, and axle bed, axle sleeve and position limit socket are set simultaneously on pump case, when assembling, gear shaft is put into rear pump shell and fasten, by penetrating pin, realize the axial limiting to gear shaft, easy to assembly, adopt the housing of plastics forming, weight is lighter, simple in structure, is convenient to assembling.Plastic gear combines by mode and the central shaft of injection moulding, while using on some put-puts, can meet performance requirement, has effectively improved work efficiency, has reduced processing cost.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model.
1-pump case in figure, 11-gear chamber, 12-axle bed, 13-axle sleeve, 14-position limit socket, 15-mounting ear, 2-gear shaft, 21-central shaft, 22-plastic gear, 23-groove, 3-pin.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, a kind of two body structures of shell oil pump pump case 1 for mutually fastening of moulding, pump case 1 is provided with gear chamber 11, gear chamber 11 is circular, in gear chamber 11, be provided with axle bed 12, axle sleeve 13 and position limit socket 14, gear shaft 2 is comprised of central shaft 21 and plastic gear 22, plastic gear 22 is injection-moulded on central shaft 21, central shaft 21 passes along axle sleeve 13, one end sidewall of plastic gear 22 is provided with semi-circular recesses 23, the sidewall of gear chamber 11 is provided with the pin 3 that penetrates position limit socket 14, and pin 3 is positioned at groove 23.Owing to taking such scheme, pump case 1 is simple in structure, by injection moulding mode, processes, cost is low, and it is high producing effect, and axle bed 12, axle sleeve 13 and position limit socket 14 are set simultaneously on pump case 1, when assembling, gear shaft 2 is put into rear pump shell 1 and fasten, the axial limiting of realizing gear shaft 2 by penetrating pin 3, easy to assembly, adopt the housing 1 of plastics forming, weight is lighter, simple in structure, is convenient to assembling.Plastic gear 22 combines by mode and the central shaft 21 of injection moulding, while using on some put-puts, can meet performance requirement, has effectively improved work efficiency, has reduced processing cost.
Described pump case 1 is provided with mounting ear 15, on mounting ear 15 with through hole.The through hole passing on mounting ear 15 by screw is installed fixing to pump case 1.
Described mounting ear 15 is 2 and is symmetrical arranged.The quantity of mounting ear 15 and position also can be designed according to the space of mounting point.
Claims (3)
1. mould shell oil pump for one kind, comprise pump case (1) and gear shaft (2), it is characterized in that: two body structures of pump case (1) for mutually fastening, pump case (1) is provided with gear chamber (11), gear chamber (11) is circular, in gear chamber (11), be provided with axle bed (12), axle sleeve (13) and position limit socket (14), gear shaft (2) is comprised of central shaft (21) and plastic gear (22), plastic gear (22) is injection-moulded on central shaft (21), central shaft (21) passes along axle sleeve (13), one end sidewall of plastic gear (22) is provided with semi-circular recesses (23), the sidewall of gear chamber (11) is provided with the pin (3) that penetrates position limit socket (14), pin (3) is positioned at groove (23).
2. a kind of shell oil pump of moulding according to claim 1, is characterized in that: described pump case (1) is provided with mounting ear (15), and mounting ear (15) is upper with through hole.
3. a kind of shell oil pump of moulding according to claim 2, is characterized in that: described mounting ear (15) is 2 and is symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320568458.8U CN203477849U (en) | 2013-09-12 | 2013-09-12 | Plastic shell oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320568458.8U CN203477849U (en) | 2013-09-12 | 2013-09-12 | Plastic shell oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203477849U true CN203477849U (en) | 2014-03-12 |
Family
ID=50226179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320568458.8U Expired - Fee Related CN203477849U (en) | 2013-09-12 | 2013-09-12 | Plastic shell oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203477849U (en) |
-
2013
- 2013-09-12 CN CN201320568458.8U patent/CN203477849U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20140912 |
|
| EXPY | Termination of patent right or utility model |