CN204878742U - Oil pump oil blanket - Google Patents
Oil pump oil blanket Download PDFInfo
- Publication number
- CN204878742U CN204878742U CN201520638238.7U CN201520638238U CN204878742U CN 204878742 U CN204878742 U CN 204878742U CN 201520638238 U CN201520638238 U CN 201520638238U CN 204878742 U CN204878742 U CN 204878742U
- Authority
- CN
- China
- Prior art keywords
- oil
- drive back
- lip
- back thread
- main lip
- 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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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses an oil pump oil blanket, its include spring, metal framework and cladding in metal framework's seal, this seal includes main lip and is located the vice lip in the main lip outside, main lip and rotation axis interference fit, and seted up many oil drive back threads on the surface at it, the oil drive back thread for the axis slope of seal is arranged, the oil drive back thread is the arc structure, and on the flow direction of lubricating oil, the height that highly is less than its middle part of the both sides of oil drive back thread, like this, this oil pump oil blanket adopts the oil drive back thread of arc structure, compares with prior art, has effectively improved the ability of resistance to wearing of oil blanket, in the relatively poor environment of machine oil cleanliness, can prolong the inefficacy mileage and can guarantee the oil blanket owner lip back of being worn and torn, still has certain pump and inhales the oil return ability, has guaranteed sealed effect, has reduced use cost.
Description
Technical field
The utility model relates to sealing configuration technical field, particularly relates to a kind of oil pump oil sealing.
Background technique
Oil sealing is for providing sealing to running shaft, with the leakage stopping internal lubrication liquid, the sealing configuration that prevents from external contaminants from entering, is the vitals in mechanical system.Traditional oil pump oil sealing comprises seal body, metal frame and spring, wherein, seal body is the lip-type packing of elastic material, and lip-type packing comprises main lip and secondary lip, its main lip and running shaft interference fit, by suitable pressing force of the spring effect, form oil film on the surface of contact, main lip offers the oil drive back thread sucking back oil for pump, oil film coordinates the function realizing sealed inside liquid with oil drive back thread, this oil drive back thread is linear structure, and many oil drive back threads form parallel line type structure; Its secondary lip and running shaft Spielpassung, for stopping entering of from external contaminants.
But the oil drive back thread on this main lip is linear structure, the ability of its resistance to foreign matter wearing and tearing is more weak, and under the operating mode that Engine Oil Cleanliness is poor, inefficacy mileage is short, and after oil drive back thread wearing and tearing, the ability that its pump sucks back oil can reduce, and causes the sealability of oil sealing to decline; Meanwhile, running shaft is Spielpassung with coordinating of secondary lip, and its dust-proof effect is poor, and forms enclosed space between main lip and secondary lip, once produce negative pressure, can cause oil return disabler.
Therefore, provide a kind of oil pump oil sealing, to having higher antiwear property, avoiding the pump caused because oil drive back thread is impaired to suck back oily ability and declining, ensureing that it has sealability steady in a long-term, just become those skilled in the art's problem demanding prompt solution.
Model utility content
The purpose of this utility model is to provide a kind of oil pump oil sealing, to having higher antiwear property, avoiding the pump caused because oil drive back thread is impaired to suck back oily ability and declining, ensureing that it has sealability steady in a long-term.
To achieve these goals, the utility model provides a kind of oil pump oil sealing, comprises spring, metal frame and is coated on the seal of described metal frame; Described seal comprises main lip and is positioned at the secondary lip outside described main lip, described main lip and running shaft interference fit, and offer many oil drive back threads in its surface, described oil drive back thread is in tilted layout relative to the axis of described seal, described oil drive back thread is arcuate structure, and on the flow direction of lubricant oil, the height of the both sides of described oil drive back thread is lower than the height in the middle part of it.
Preferably, the true dip direction of described oil drive back thread is identical with the sense of rotation of described running shaft.
Preferably, described oil drive back thread is only arranged at described main lip near the side of lubricant oil.
Preferably, the number of described oil drive back thread is 110-115.
Preferably, described secondary lip offers some projections, described projection and described running shaft interference fit, described secondary lip and described running shaft Spielpassung.
Preferably, described projection is four groups, often organizes two, and the spacing between two described projections often in group is 2mm.
Oil pump oil sealing provided by the utility model comprises spring, metal frame and is coated on the seal of described metal frame; Sealing body comprises main lip and is positioned at the secondary lip outside described main lip, described main lip and running shaft interference fit, and offer many oil drive back threads in its surface, described oil drive back thread is in tilted layout relative to the axis of described seal, described oil drive back thread is arcuate structure, and on the flow direction of lubricant oil, the height of the both sides of described oil drive back thread is lower than the height in the middle part of it; Like this, this oil pump oil sealing adopts the oil drive back thread of arcuate structure, compared with prior art, effectively improve the antiwear property of oil sealing, in the environment that Engine Oil Cleanliness is poor, inefficacy mileage can be extended and after can ensureing that the main lip of oil sealing is worn, still there is certain pump and suck back oily ability, ensure that sealing effect, reduce user cost.
In a preferred embodiment, in oil pump oil sealing provided by the utility model, its oil drive back thread is only arranged at the side of main lip near lubricant oil, so that under the prerequisite ensureing oil return performance, simplify oil seal structure as far as possible, reduce difficulty of processing, save production cost.
In another preferred embodiment, in oil pump oil sealing provided by the utility model, its secondary lip offers some projections, described projection and described running shaft interference fit, described secondary lip and described running shaft Spielpassung; Like this, by protruding and running shaft interference fit, and secondary lip and running shaft Spielpassung, the foreign matter both intercepted, turn avoid and produce between main lip negative pressure, ensure that sealing effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the utility model, for those of ordinary skill in the art, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of embodiment of oil pump oil sealing provided by the utility model;
Fig. 2 is the partial enlarged drawing of part A in Fig. 1;
Fig. 3 is the sectional view of Fig. 2 protrusions.
Description of reference numerals:
33-is protruding for the main lip 32-of 1-spring 2-metal frame 3-seal 31-secondary lip 4-running shaft 311-oil drive back thread
Embodiment
Core of the present utility model is to provide a kind of oil pump oil sealing, to having higher antiwear property, avoiding the pump caused because oil drive back thread is impaired to suck back oily ability and declining, ensureing that it has sealability steady in a long-term.
In order to make those skilled in the art understand the technical solution of the utility model better, below in conjunction with accompanying drawing, the utility model is further detailed.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of embodiment of oil pump oil sealing provided by the utility model.
In a kind of embodiment, oil pump oil sealing provided by the utility model comprises spring 1, metal frame 2 and is coated on the seal 3 of described metal frame 2; The secondary lip 32 that sealing body 3 comprises main lip 31 and is positioned at outside described main lip 31, described main lip 31 and running shaft 4 interference fit, and offer many oil drive back threads 311 in its surface, described oil drive back thread 311 is in tilted layout relative to the axis of described seal 3, described oil drive back thread 311 is arcuate structure, and on the flow direction of lubricant oil, the height of the both sides of described oil drive back thread 311 is lower than the height in the middle part of it; Like this, this oil pump oil sealing adopts the oil drive back thread 311 of arcuate structure, compared with prior art, effectively improve the antiwear property of oil sealing, in the environment that Engine Oil Cleanliness is poor, inefficacy mileage can be extended and after can ensureing that the main lip 31 of oil sealing is worn, still there is certain pump and suck back oily ability, ensure that sealing effect, reduce user cost.
In order to improve oil return efficiency, the true dip direction of above-mentioned oil drive back thread 311 is identical with the sense of rotation of described running shaft 4, apparently, also can be suitable angle.Oil drive back thread 311 only can be arranged at main lip 31 near the side of lubricant oil, under the prerequisite ensureing oil return performance, to simplify oil seal structure as far as possible, reduces difficulty of processing, saves production cost.Oil drive back thread 311 also can arrange whole main lip 31 periphery.Particularly, the number of oil drive back thread 311 is 110-115, is distributed on main lip 31 near the side of lubricant oil.
Further, as shown in Figure 2, some protruding 33 can be offered on secondary lip 32, described protruding 33 with described running shaft 4 interference fit, described secondary lip 32 and described running shaft 4 Spielpassung; Like this, by protruding 33 and running shaft 4 interference fit, and secondary lip 32 and running shaft 4 Spielpassung, the foreign matter both intercepted, turn avoid and produce between main lip 31 negative pressure, ensure that sealing effect.
In the present embodiment, secondary lip 32 is of a size of Φ 19.9 (-0.3 ~+0.3), the running shaft 4 coordinated with it is of a size of Φ 20 (-0.032 ~-0.020), above-mentioned protruding 33 is four groups, and four groups of projections 33 are distributed on the internal surface of secondary lip 32, as shown in Figure 3, the sectional shape of this projection 33 is trapezoid, often organize two projections 33, spacing is 2mm, protruding 33 higher by 0.1 than secondary lip 32 (-0.05 ~+0.05).Should be understood that, the Dimensions of secondary lip 32 should be determined according to running shaft 4 size joined together, meets protruding 33 and is as the criterion with running shaft 4 Spielpassung with running shaft 4 interference fit, secondary lip 32, and apparently, on the direction near running shaft 4, protruding 33 must exceed secondary lip 32.
Upper describes some one exemplary embodiment of the present utility model by the mode illustrated, undoubtedly, for those of ordinary skill in the art, when not departing from spirit and scope of the present utility model, can revise described embodiment by various different mode.Therefore, above-mentioned accompanying drawing is illustrative with being described in essence, should not be construed as the restriction to the utility model claims.
Claims (6)
1. an oil pump oil sealing, comprises spring (1), metal frame (2) and is coated on the seal (3) of described metal frame (2); It is characterized in that, described seal (3) comprises main lip (31) and is positioned at the secondary lip (32) in described main lip (31) outside, described main lip (31) and running shaft (4) interference fit, and offer many oil drive back threads (311) in its surface, described oil drive back thread (311) is in tilted layout relative to the axis of described seal (3), described oil drive back thread (311) is arcuate structure, and on the flow direction of lubricant oil, the height of the both sides of described oil drive back thread (311) is lower than the height in the middle part of it.
2. oil pump oil sealing according to claim 1, is characterized in that, the true dip direction of described oil drive back thread (311) is identical with the sense of rotation of described running shaft (4).
3. oil pump oil sealing according to claim 2, is characterized in that, described oil drive back thread (311) is only arranged at the side of described main lip (31) near lubricant oil.
4. oil pump oil sealing according to claim 3, is characterized in that, the number of described oil drive back thread (311) is 110-115.
5. the oil pump oil sealing according to any one of claim 1-4, it is characterized in that, described secondary lip (32) offers some projections (33), described projection (33) and described running shaft (4) interference fit, described secondary lip (32) and described running shaft (4) Spielpassung.
6. oil pump oil sealing according to claim 5, is characterized in that, described projection (33) is four groups, often organizes two, and the spacing between two described projections (33) often in group is 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520638238.7U CN204878742U (en) | 2015-08-20 | 2015-08-20 | Oil pump oil blanket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520638238.7U CN204878742U (en) | 2015-08-20 | 2015-08-20 | Oil pump oil blanket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204878742U true CN204878742U (en) | 2015-12-16 |
Family
ID=54823116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520638238.7U Expired - Fee Related CN204878742U (en) | 2015-08-20 | 2015-08-20 | Oil pump oil blanket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204878742U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042083A (en) * | 2015-08-20 | 2015-11-11 | 安徽江淮汽车股份有限公司 | Oil seal of oil pump |
| CN106763789A (en) * | 2017-01-13 | 2017-05-31 | 东莞市瑞拓五金橡塑有限公司 | Rubber seal |
| CN113892004A (en) * | 2019-06-20 | 2022-01-04 | Nok株式会社 | Sealing device |
-
2015
- 2015-08-20 CN CN201520638238.7U patent/CN204878742U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042083A (en) * | 2015-08-20 | 2015-11-11 | 安徽江淮汽车股份有限公司 | Oil seal of oil pump |
| CN106763789A (en) * | 2017-01-13 | 2017-05-31 | 东莞市瑞拓五金橡塑有限公司 | Rubber seal |
| CN113892004A (en) * | 2019-06-20 | 2022-01-04 | Nok株式会社 | Sealing device |
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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: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20190820 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |