CN203783675U - Lubricating oil pump with flexible oil drainage structure - Google Patents
Lubricating oil pump with flexible oil drainage structure Download PDFInfo
- Publication number
- CN203783675U CN203783675U CN201420126328.3U CN201420126328U CN203783675U CN 203783675 U CN203783675 U CN 203783675U CN 201420126328 U CN201420126328 U CN 201420126328U CN 203783675 U CN203783675 U CN 203783675U
- Authority
- CN
- China
- Prior art keywords
- oil pump
- oil
- steel part
- part piston
- rubber plug
- 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
- 239000003921 oil Substances 0.000 title abstract description 38
- 239000010687 lubricating oil Substances 0.000 title abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000012856 packing Methods 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000010721 machine oil Substances 0.000 description 5
- 239000010705 motor oil Substances 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
Landscapes
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a lubricating oil pump with a flexible oil drainage structure. The lubricating oil pump comprises an upper oil pump casing, a lower oil pump casing, an oil duct baffle, a steel piston, a spring and a washer, wherein the upper oil pump casing and the lower oil pump casing are fixed on both sides of the oil duct baffle through a locating pin and a connection screw; an oil chamber and a pressure relief hole are formed in the oil duct baffle; the steel piston is in clearance fit into the pressure relief hole; the spring and the washer are arranged at the tail end of the steel piston; a rubber end plug is arranged at the front end of the steel piston. The lubricating oil pump has the advantages of simple structure, rationality in design, easiness in manufacturing, simplicity in assembling, good sealing property, stable pressure relief and reliable performance, and the manufacturing accuracy requirement is not high.
Description
Technical field
The utility model relates to a kind of oil pump, particularly relates to a kind of oil pump with flexible oil drainage structure.
Background technique
At present, after domestic the used oil pump long-play with oil drainage structure, the situation such as occur that flow is on the low side, oil pressure is unstable and draining pressure is on the low side, cause engine interior engine oil pressure low, can not play well the lubrication of each moving element of motor, thermal power loss is larger, and inordinate wear appears in each parts, affects motor normal service life.Therefore, urgently design and a kind ofly can reduce manufacture cost, thereby the reliability of enhancing product performance is improved the thermal efficiency of motor and Economy, make to obtain between each component of engine interior fuel pump structure constant, sufficient lubrication, to overcome, there is at present pressure relief system unstable properties, make required precision high because of difficult point.
Model utility content
The purpose of this utility model is just to provide a kind of oil pump with flexible oil drainage structure, efficiently solves traditional oil pump pressure relief system unstable, makes the high problem of required precision.
The purpose of this utility model realizes by following technical proposals:
A kind of oil pump with flexible oil drainage structure, comprise oiling pump housing, lower oil pump case, oil duct dividing plate, steel part piston, spring and packing ring, oiling pump housing and lower oil pump case are fixed on oil duct dividing plate both sides by locating stud and attachment screw, on oil duct dividing plate, be provided with grease chamber and relief hole, the activity of steel part piston is engaged in relief hole, steel part piston tail end arranges spring and packing ring, and described steel part piston nose is provided with rubber plug.
The pressure relief system of this structure, rubber plug can effectively be eliminated matching gap, and guarantees the flexibility of reciprocating motion of the pistons simultaneously.
Further, described steel part piston nose is offered groove, and rubber plug presses fit in this groove.
The processing of this structure fabrication is simple, and easily, required precision is not high in assembling, and whole moving piston of rubber plug and the formation of steel part piston, efficiently solves the difficulty that rubber plug moves reciprocatingly in relief hole.
Further, described relief hole is step hole, and rubber plug front end has outer rim, and the step surface of this outer rim and step hole matches, and rubber plug rear end is pressed in the groove of steel part piston nose.
This oil pump has reduced the making precision of product, existing oil pump is very high to the outside dimension required precision of the internal diameter size of relief hole and piston, if both matching gaps are excessive, sealing will reduce, cause lubricating oil leakage, engine oil pressure is steady, fluctuation is large.If both matching gaps are little, can have a strong impact on the flexibility of reciprocating motion of the pistons, and then affect machine oil pump performance.And oil pump of the present utility model adopts rubber plug to seal relief hole, rubber plug has certain elastic module, can well seal and relief hole between gap, also can make between steel part piston and relief hole, to there is proper gap simultaneously, thereby guarantee reciprocating flexibility.
Compared with prior art, the beneficial effects of the utility model are: simple in structure, reasonable in design, make required precision not high, and to make easily, assembling is simple, good seal performance, pressure release is steady, reliable performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing at relief hole place in Fig. 1.
Embodiment
Below in conjunction with specific embodiments and the drawings, the utility model is further described.
As depicted in figs. 1 and 2, a kind of oil pump with flexible oil drainage structure, comprise oiling pump housing 1, lower oil pump case 2, oil duct dividing plate 3, steel part piston 4, spring 5 and packing ring 6, oiling pump housing 1 and lower oil pump case 2 are fixed on oil duct dividing plate 3 both sides by locating stud 7 and attachment screw 8, on oil duct dividing plate 3, be provided with grease chamber 9 and relief hole 10,4 activities of steel part piston are engaged in relief hole 10, steel part piston 10 tail ends arrange spring 5 and packing ring 6, and described steel part piston 10 front ends are provided with rubber plug 11.
Described steel part piston 10 front ends are offered groove, and rubber plug 11 presses fit in this groove.
Described relief hole 10 is step hole, and rubber plug 11 front ends have outer rim 12, and this outer rim 12 matches with the step surface of step hole, and rubber plug 11 rear ends are pressed in the groove of steel part piston 4 front ends.
In original state, spring 5 is compressive state, and spring 5 promotes steel part piston 4, and rubber plug 11, by relief hole 10 shutoff, makes grease chamber 9 in a complete closed state, and machine oil is under the rotation situation of oil pump, in a sealing recurrent state.Rubber plug 11 is under the thrust of spring 5, and its front outer 12 contacts with the step surface of relief hole 10, and produces certain compressive deformation, thereby has effectively guaranteed reliably the good sealability in relief hole 10 places.When engine oil pressure increases to certain value, machine oil will promote rubber plug 11 and move backward, thereby machine oil flows out pressure releases (machine oil flow to as shown in Figure 1, Figure 2 arrow shown in) from relief hole 10; In pressure leak process, engine oil pressure reduces gradually, and spring 5 promotes rubber plug 11 shutoff relief hole 10 again.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. an oil pump with flexible oil drainage structure, comprise oiling pump housing, lower oil pump case, oil duct dividing plate, steel part piston, spring and packing ring, oiling pump housing and lower oil pump case are fixed on oil duct dividing plate both sides by locating stud and attachment screw, on oil duct dividing plate, be provided with grease chamber and relief hole, the activity of steel part piston is engaged in relief hole, steel part piston tail end arranges spring and packing ring, it is characterized in that: described steel part piston nose is provided with rubber plug.
2. the oil pump with flexible oil drainage structure according to claim 1, is characterized in that: described steel part piston nose is offered groove, and rubber plug presses fit in this groove.
3. the oil pump with flexible oil drainage structure according to claim 2, it is characterized in that: described relief hole is step hole, rubber plug front end has outer rim, and the step surface of this outer rim and step hole matches, and rubber plug rear end is pressed in the groove of steel part piston nose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420126328.3U CN203783675U (en) | 2014-03-20 | 2014-03-20 | Lubricating oil pump with flexible oil drainage structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420126328.3U CN203783675U (en) | 2014-03-20 | 2014-03-20 | Lubricating oil pump with flexible oil drainage structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203783675U true CN203783675U (en) | 2014-08-20 |
Family
ID=51319873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420126328.3U Expired - Lifetime CN203783675U (en) | 2014-03-20 | 2014-03-20 | Lubricating oil pump with flexible oil drainage structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203783675U (en) |
-
2014
- 2014-03-20 CN CN201420126328.3U patent/CN203783675U/en not_active Expired - Lifetime
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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 | ||
| CP01 | Change in the name or title of a patent holder |
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 high tech Industrial Park, Sichuan, Rong Chuan Road, No. 9 Patentee before: ZIGONG CHUANLI INDUSTRY Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |
|
| CX01 | Expiry of patent term |