CN103277519A - Double-framework floating lip oil seal - Google Patents
Double-framework floating lip oil seal Download PDFInfo
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- CN103277519A CN103277519A CN2013101756897A CN201310175689A CN103277519A CN 103277519 A CN103277519 A CN 103277519A CN 2013101756897 A CN2013101756897 A CN 2013101756897A CN 201310175689 A CN201310175689 A CN 201310175689A CN 103277519 A CN103277519 A CN 103277519A
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- lip
- skeleton
- oil seal
- unsteady
- pair
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Abstract
The invention discloses a double-framework floating lip oil seal which comprises an annular outer framework (1), an annular floating ring (2) made of elastic materials, an annular inner framework (3) and an annular oil seal body (4) made of rubber materials. The oil seal body (4) comprises a main sealing lip (5) and an auxiliary sealing lip (6), wherein the main sealing lip (5) is located on the inner side and protrudes in the radial direction, and the auxiliary sealing lip (6) is located on the outer side and protrudes in the radial direction. Due to the structure of the floating ring (2) and the double frameworks, the oil seal can automatically compensate radial run-out generated by a rotating shaft, the sealing lips of the oil seal can jump along with the rotating shaft. Hence, a better sealing effect is achieved.
Description
Technical field
The present invention relates to mechanical transmission fields, refer to a kind of pair of skeleton lip oil sealing that floats especially.
Background technique
Need in the lubricated device outside framework oil seal member that is absolutely necessary at the gearbox of mechanical field, crankcase etc.The effect of outside framework oil seal generally is exactly that the parts that will need in the transmission part to lubricate and the parts of exerting oneself are isolated, and is unlikely to allow oil seepage, is generally used for running shaft, is a kind of running shaft lip seal.
Present known outside framework oil seal is because structural limitations, and the maximum eccentric of axle can not surpass 0.2mm, if beat above this value in the running shaft rotary course, spool just might and the outside framework oil seal lip between produce the gap, cause seepage.But a lot of transmission systems are owing to structure and Environmental Conditions, and the 0.2mm of surpassing far away beats in the process of running shaft rotation output.
Summary of the invention
In view of this, the objective of the invention is to propose the unsteady lip oil sealing of a kind of pair of skeleton, the structure of floating ring and two skeletons makes oil sealing can compensate the circular runout that running shaft produces automatically, the sealing lip of oil sealing is beated with running shaft, thereby reach better sealing effect.
Based on the unsteady lip oil sealing of above-mentioned purpose a kind of pair of skeleton provided by the invention, comprise the outer skeleton of annular, the floating ring of cyclic spring material, the inner frame of annular, the oil seal body of ring-shaped rubber material; Described oil seal body comprises and is positioned at inboard radially outstanding primary seal lip and is positioned at the radially outstanding secondary sealing lip in the outside.
Preferably, the sectional shape of described floating ring is " U " type or " V " type.
Preferably, the material of described floating ring is rubber or macromolecular material.
Preferably, described outer skeleton and inner frame are metallic material.
Preferably, the sectional shape of described outer skeleton and inner frame is " L " type.
Preferably, the outer surface of described outer skeleton and inner frame is coated with rubber layer.
Preferably, described primary seal lip outer surface is provided with the self-tightening spring.
From above as can be seen, a kind of pair of skeleton provided by the invention lip oil sealing that floats, by the structure of floating ring and the two skeletons of use is set, can be when running shaft be radially beated, prevent the sealing lip generation deformation of oil sealing, the direction of beating that namely makes oil sealing can follow running shaft compensates automatically, realizes good sealing effect.
Description of drawings
Fig. 1 is unsteady lip oil sealing first embodiment's of of the present invention pair of skeleton sectional view;
Fig. 2 is unsteady lip oil sealing second embodiment's of of the present invention pair of skeleton sectional view;
Fig. 3 is unsteady lip oil sealing the 3rd embodiment's of of the present invention pair of skeleton sectional view.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
With reference to figure 1, the disclosed a kind of pair of skeleton of the embodiment of the invention lip oil sealing that floats comprises the outer skeleton 1 of annular, the floating ring 2 of cyclic spring material, the inner frame 3 of annular, the oil seal body 4 of ring-shaped rubber material; Described oil seal body 4 comprises and is positioned at inboard radially outstanding primary seal lip 5 and is positioned at the radially outstanding secondary sealing lip 6 in the outside.
With reference to figure 1, be unsteady lip oil sealing first embodiment's of of the present invention pair of skeleton sectional view.Wherein, floating ring 2 and inner frame 3 outside between skeleton 1 and the oil seal body 4.The material of floating ring 2 is rubber, because rubber material has elasticity, in the oil sealing using process, when running shaft is offset in the axial direction, floating ring 2 can drive oil seal body 4, and to follow running shaft mobile together, can prevent from causing the situation of leakage of oil the slit occurring between oil seal body 4 and the running shaft in the process of running shaft in axial dipole field, namely realize the effect of unsteady lip.Iff floating ring 2 is linked to each other with oil seal body 4, outer skeleton 1 will weaken for the supporting effect of oil seal body 4, oil seal body 4 is during with running shaft axial dipole field, distortion may appear in the lip of primary seal lip 5 and secondary sealing lip 6, so, between floating ring 2 and oil seal body 4, inner frame 3 is set in the embodiment of the invention.3 pairs of oil seal bodies 4 of inner frame provide a supporting role, and make that oil seal body 4 can not be out of shape thereupon when floating ring 2 deforms, and have further guaranteed the sealing effect of oil sealing.
Wherein, the material of floating ring 2 is rubber or macromolecular material, and in the present embodiment, the material of floating ring 2 is rubber, and when applied environment of the present invention had special requirement, the material of floating ring 2 can be chosen for the macromolecular material that meets the applied environment needs.The sectional shape of floating ring 2 is " U " type or " V " type, and in the present embodiment, the sectional shape of floating ring 2 is " U " type.In another embodiment of the present invention, with reference to figure 2, be unsteady lip oil sealing second embodiment's of of the present invention pair of skeleton sectional view, the sectional shape of floating ring 2 is " V " type.The floating ring 2 of different cross section shape has different traverses, is applied to different running shafts.
In embodiment as herein described, the outer surface of outer skeleton 1 and inner frame 3 is coated with rubber layer.Oil seal body 4 comprises primary seal lip 5 and secondary sealing lip 6.Primary seal lip 5 is used for isolation lubricating oil, prevents oil seepage to needing lubricated parts and exert oneself between the parts, and secondary sealing lip 6 is used for preventing dust, and it can prevent effectively that dust or impurity from entering machine part inside.Wherein, primary seal lip 5 outer surfaces are provided with self-tightening spring 7, and self-tightening spring 7 can apply radially a tightening force to oil seal body 4, guarantees the sealing effect of oil sealing.
Those of ordinary skill in the field are to be understood that: the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the unsteady lip oil sealing of two skeletons is characterized in that, comprises the outer skeleton (1) of annular, the floating ring (2) of cyclic spring material, the inner frame (3) of annular, the oil seal body (4) of ring-shaped rubber material; Described oil seal body (4) comprises and is positioned at inboard radially outstanding primary seal lip (5) and is positioned at the secondary sealing lip (6) that radially give prominence in the outside.
2. the according to claim 1 pair of unsteady lip oil sealing of skeleton is characterized in that the sectional shape of described floating ring (2) is " U " type or " V " type.
3. the according to claim 1 pair of unsteady lip oil sealing of skeleton is characterized in that the material of described floating ring (2) is rubber or macromolecular material.
4. the according to claim 1 pair of unsteady lip oil sealing of skeleton is characterized in that described outer skeleton (1) and inner frame (3) are metallic material.
5. the according to claim 1 pair of unsteady lip oil sealing of skeleton is characterized in that the sectional shape of described outer skeleton (1) and inner frame (3) is " L " type.
6. the according to claim 1 pair of unsteady lip oil sealing of skeleton is characterized in that the outer surface of described outer skeleton (1) and inner frame (3) is coated with rubber layer.
7. the according to claim 1 pair of unsteady lip oil sealing of skeleton is characterized in that described primary seal lip (5) outer surface is provided with self-tightening spring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101756897A CN103277519A (en) | 2013-05-13 | 2013-05-13 | Double-framework floating lip oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101756897A CN103277519A (en) | 2013-05-13 | 2013-05-13 | Double-framework floating lip oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103277519A true CN103277519A (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101756897A Pending CN103277519A (en) | 2013-05-13 | 2013-05-13 | Double-framework floating lip oil seal |
Country Status (1)
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| CN (1) | CN103277519A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993978A (en) * | 2014-06-08 | 2014-08-20 | 彭常龙 | Air filter sealing ring |
| CN104534098A (en) * | 2014-12-30 | 2015-04-22 | 广州机械科学研究院有限公司 | Sealing structure for floating shaft |
| CN110325771A (en) * | 2017-02-17 | 2019-10-11 | 特瑞堡密封系统德国有限公司 | Sealing device with improved lubrication property |
| CN112728093A (en) * | 2021-01-05 | 2021-04-30 | 益航电子股份有限公司 | Rotary machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10339373A (en) * | 1997-06-05 | 1998-12-22 | Koyo Seiko Co Ltd | Oil seal |
| CN201539567U (en) * | 2009-09-10 | 2010-08-04 | 青岛开世密封工业有限公司 | Axle sealing oil seal |
| CN201568575U (en) * | 2009-10-13 | 2010-09-01 | 安徽中鼎密封件股份有限公司 | Huge eccentric rotation shaft oil seal for automobile half shaft |
| CN202091515U (en) * | 2011-06-20 | 2011-12-28 | 成都盛帮密封件股份有限公司 | Low-pressure resistant and big-jump resistant high-speed oil seal |
-
2013
- 2013-05-13 CN CN2013101756897A patent/CN103277519A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10339373A (en) * | 1997-06-05 | 1998-12-22 | Koyo Seiko Co Ltd | Oil seal |
| CN201539567U (en) * | 2009-09-10 | 2010-08-04 | 青岛开世密封工业有限公司 | Axle sealing oil seal |
| CN201568575U (en) * | 2009-10-13 | 2010-09-01 | 安徽中鼎密封件股份有限公司 | Huge eccentric rotation shaft oil seal for automobile half shaft |
| CN202091515U (en) * | 2011-06-20 | 2011-12-28 | 成都盛帮密封件股份有限公司 | Low-pressure resistant and big-jump resistant high-speed oil seal |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993978A (en) * | 2014-06-08 | 2014-08-20 | 彭常龙 | Air filter sealing ring |
| CN104534098A (en) * | 2014-12-30 | 2015-04-22 | 广州机械科学研究院有限公司 | Sealing structure for floating shaft |
| CN110325771A (en) * | 2017-02-17 | 2019-10-11 | 特瑞堡密封系统德国有限公司 | Sealing device with improved lubrication property |
| CN110325771B (en) * | 2017-02-17 | 2020-10-23 | 特瑞堡密封系统德国有限公司 | Sealing device with improved lubrication properties |
| CN112728093A (en) * | 2021-01-05 | 2021-04-30 | 益航电子股份有限公司 | Rotary machine |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130904 |