CN102979913A - Composite double-lip oil seal - Google Patents
Composite double-lip oil seal Download PDFInfo
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- CN102979913A CN102979913A CN2012105140150A CN201210514015A CN102979913A CN 102979913 A CN102979913 A CN 102979913A CN 2012105140150 A CN2012105140150 A CN 2012105140150A CN 201210514015 A CN201210514015 A CN 201210514015A CN 102979913 A CN102979913 A CN 102979913A
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Abstract
The invention relates to a composite double-lip oil seal. The composite double-lip oil seal is formed by sleeving an external oil seal structure and an internal oil seal structure, wherein the external oil seal structure is formed by performing vulcanization-molding on an external metal framework and a rubber body through a die, after shaping, a lip port with a spring and an inclined boss are generated, and the exposed metal framework at the middle lower part of inside of the external oil seal structure is used as an internal matching surface to be in sleeved match with the internal oil seal structure; and the internal oil seal structure is formed by performing vulcanization-molding on an internal metal framework and a rubber body through a die, after shaping, a lip port without a spring and an auxiliary lip structure are generated, the lower part of the internal metal framework is an exposed structure, the outside of the internal metal framework is used as an external matching surface to be in sleeved match with the internal matching surface of the external oil seal structure, a positioning flange is arranged at the lower end of the exposed metal frame, and the upper inside of the internal metal framework is an exposed structure and is used as a guiding surface to be in clearance fit with a work shaft. The composite double-lip oil seal has two lip ports with different structures, can simultaneously satisfy sealing requirements of rotation movement and reciprocating movement, and has self-protection function; and the composite double-lip oil seal is long in service life, and can increase sealing performance and satisfy the sealing requirements of uniaxial multimode movement.
Description
Technical field
The present invention relates to a kind of double-lip structure oil sealing, especially a kind of compound two-lip seal.
Background technique
Traditional oil sealing is generally single lip structure, along with science and technology develops rapidly, some high-end technologies require also day by day to increase, every kind of product structure and performance are all constantly developing and are improving, the function of machinery equipment is also at gradual perfection, the working shaft of some equipment is in order to satisfy the realization of certain function, need be rotated simultaneously formula and reciprocating type Multi task campaign, though traditional single lip mouth oil seal structure can realize fitting tight, but often unsatisfactory in actual use, sealability is relatively poor, easily loss, and the shortcomings such as life-span weak point still need be improved.
Summary of the invention
In order to solve above technical problem, the object of the present invention is to provide a kind of compound two-lip seal, oil sealing riveting dress by two different lip structures constitutes, this structure has leading role and resistance to compression effect when using, reach the double-sealing impact of performance, can satisfy rotary and reciprocating type usage requirement of working simultaneously.
The present invention, consisted of by outer oil seal structure and inner oil seal structure suit, wherein: the outer oil seal structure is passed through the mould sulfidization molding by outer metal frame and outer oil seal structure rubber body, after the moulding, outer oil seal structure rubber body generates band spring lip and inclined-plane boss, the middle and lower part exposed metal skeleton of outer oil seal structure inboard, the exposed metal skeleton cooperates with inner oil seal structure suit as interior fitting surface; The inner oil seal structure is passed through the mould sulfidization molding by interior metal frame and inner oil seal structure rubber body, after the moulding, inner oil seal structure rubber body generates without spring lip and secondary bead structure, the bottom of interior metal frame is exposed structure, its outside cooperates with the interior fitting surface suit of outer oil seal structure as fit on face, the lower end of exposed metal skeleton is provided with the location flanging, and the upper inner of interior metal frame is exposed structure, is Spielpassung as guide surface and working shaft.
The present invention, the interior fitting surface of described outer metal frame and the fit on face of interior metal frame are interference fit, magnitude of interference is 0.05～0.1mm.
The present invention, the perpendicularity (deviation) of the interior fitting surface of described outer metal frame and the fit on face of interior metal frame all≤0.1mm.
The present invention, the gap after described guide surface and the working shaft assembling is 0.1～0.2mm.
The present invention, after the metal frame impact briquetting, with outer metal frame, interior metal frame respectively with rubber curing forming, has the band spring structure behind the outer skeleton sulfidization molding, can guarantee the sealing effect of rotate-stationary mode, non-spring structure behind the inner frame sulfidization molding can guarantee the sealing effect of reciprocatory motion.The design of inner oil seal internal diameter exposes skeletal structure, and the gap control after assembling with working shaft is 0.1～0.2mm, and this structure can make working shaft when doing strenuous exercise, plays the effect of guiding, thus the seal lip of protection oil sealing.Two inside and outside oil sealings are combined into compound two-lip seal by the riveting assembling, and inner oil seal forms a near closed hollow ring without the spring lip outer oil seal lip bottom of can fitting after the assembling, can prevent that working shaft bad student's negative pressure when moving from causing seepage.
The present invention; its beneficial effect is: this compound two-lip seal has the lip of two different structures; can satisfy simultaneously and rotatablely move and reciprocating seal request; and has a self-protection structure function; long service life; strengthen the sealability effect, solve the seal request of single shaft multimode motion.
Description of drawings
Fig. 1 is oil seal structure schematic representation outside the present embodiment, and Fig. 2 is oil seal structure schematic representation within the present embodiment, and Fig. 3 is the structural representation of present embodiment, the assembling condition schematic representation of Fig. 4 present embodiment.
Among the figure, 1, outer metal frame; 2, spring; 3, outer oil seal structure rubber body; 4, band spring lip; 5, inclined-plane boss; 6, interior fitting surface; 7, interior metal frame; 8, fit on face; 9, without the spring lip; 10, guide surface; 11, secondary lip; 12, outer oil seal structure; 13, sealed airspace; 14, inner oil seal structure; 15, fitting surface; 16, cavity; 17, airtight position; 18, dust-proof cover; 19, working shaft; 20, inner oil seal structure rubber body; 21, location flanging.
Embodiment
With reference to Fig. 1-Fig. 3, a kind of compound two-lip seal, consisted of by outer oil seal structure 12 and inner oil seal structure 14 suits, wherein, outer oil seal structure 12 is passed through the mould sulfidization molding by outer metal frame 1 and outer oil seal structure rubber body 3, and after the moulding, outer oil seal structure rubber body 3 generates band spring lip 4 and inclined-plane boss 5, the middle and lower part exposed metal skeleton of outer oil seal structure 12 inboards, the exposed metal skeleton cooperates with inner oil seal structure 14 suits as interior fitting surface 6; Inner oil seal structure 14 is passed through the mould sulfidization molding by interior metal frame 7 and inner oil seal structure rubber body 20, after the moulding, inner oil seal structure rubber body 20 generates without spring lip 9 and secondary bead structure 11, the bottom of interior metal frame 7 is exposed structure, its outside cooperates with interior fitting surface 6 suits of outer oil seal structure as fit on face 8, the lower end of exposed metal skeleton is provided with location flanging 21, and the upper inner of interior metal frame 7 is exposed structure, is Spielpassung as guide surface 10 with working shaft 19.
Present embodiment, the interior fitting surface 6 of described outer metal frame 1 is interference fit with the fit on face 8 of interior metal frame 7, magnitude of interference is 0.05～0.1mm; The perpendicularity (deviation) of the interior fitting surface 6 of described outer metal frame 1 and the fit on face 8 of interior metal frame 7 all≤0.1mm; Gap after described guide surface 10 assembles with working shaft 19 is 0.1～0.2mm.
As shown in Figure 1, present embodiment outer oil seal structure 12 is comprised of three parts, comprising: outer metal frame 1; Spring 2; Rubber body 3.Outer metal frame 1 is polymorphic structure, and behind rubber 3 sulfidization moldings, assembling spring 2 consists of the outer oil seal main body, and main structure has: band spring lip 4, inclined-plane boss 5, interior fitting surface 6.
As shown in Figure 2, present embodiment inner oil seal structure 14 is comprised of two-part, comprising: rubber 20; Interior metal frame 7.Interior metal frame 7 is similarly polymorphic structure, with rubber 20 sulfidization moldings, consists of the inner oil seal main body, and main structure has: fit on face 8, without spring lip 9, guide surface 10 and secondary lip 11.
As shown in Figure 3, present embodiment consists of by outer oil seal structure 12 and inner oil seal structure 14 combined sets, form fitting surface 15 behind the suit and form sealed airspace 13, the effect of design sealed airspace 13 is: present embodiment is not during by assembling work axle 19, in order to control the size without spring lip 9, can not be subject to the external force extruding without spring lip 9, after assembling with working shaft 19, because working shaft 19 is the size swell without spring lip 9, so that inclined-plane boss 5 can be close to without spring lip 9, sealed airspace 13 is eliminated automatically, and simultaneously 5 pairs of inclined-plane boss apply enclasping force without spring lip 9, assurance is difficult for lax without spring lip 9, reduce the risk of seal failure.
As shown in Figure 4; after present embodiment is set with by outer oil seal structure 12 and inner oil seal structure 14; refill and be fitted in the cavity 16; after dust-proof cover 18 is assembled to first working shaft 19, be inserted in the present embodiment, form airtight position 17 after the assembling; secondary lip 11 and dust-proof cover 18 are dust-proof protective structure; double protection prevents that effectively dust from entering into sealing system, reduces wearing and tearing, life-saving.
During work, minute two kinds of motions: 1. when working shaft 19 rotates, 4 main seal actions of band spring lip of outer oil seal structure 12 guarantee that whole sealing system carries out; 2. when working shaft 19 is reciprocating; outer oil seal structure 12 seals simultaneously with the lip of inner oil seal structure 14; because airtight position 17 has pressure-keeping functions; can prevent that pressure oscillation from producing negative pressure; avoid the band spring lip 4 of outer oil seal structure Seepage to occur; and the deviation the when guide surface 10 of inner oil seal can effectively be managed positive to-and-fro motion is protected sealing mechanism of the present invention.
Claims (5)
1. compound two-lip seal, it is characterized in that: consisted of by outer oil seal structure (12) and inner oil seal structure (14) suit, wherein, the outer oil seal structure is passed through the mould sulfidization molding by outer metal frame (1) and outer oil seal structure rubber body (3), after the moulding, outer oil seal structure rubber body (3) generates band spring lip (4) and inclined-plane boss (5), the middle and lower part exposed metal skeleton of outer oil seal structure inboard, and the exposed metal skeleton cooperates with inner oil seal structure suit as interior fitting surface (6); The inner oil seal structure is passed through the mould sulfidization molding by interior metal frame (7) and inner oil seal structure rubber body (20), after the moulding, inner oil seal structure rubber body (20) generates without spring lip (9) and secondary bead structure (11), the bottom of interior metal frame (7) is exposed structure, its outside cooperates with interior fitting surface (6) suit of outer oil seal structure as fit on face (8), the lower end of exposed metal skeleton is provided with location flanging (21), the upper inner of interior metal frame (7) is exposed structure, is Spielpassung as guide surface (10) with working shaft (19).
2. compound two-lip seal according to claim 1 is characterized in that: the interior fitting surface (6) of described outer metal frame (1) is interference fit with the fit on face (8) of interior metal frame (7), and magnitude of interference is 0.05～0.1mm.
3. compound two-lip seal according to claim 1 and 2 is characterized in that: the perpendicularity deviation of the interior fitting surface (6) of described outer metal frame (1) and the fit on face (8) of interior metal frame (7) all≤0.1mm.
4. compound two-lip seal according to claim 1 and 2 is characterized in that: the gap after described guide surface (10) and working shaft (19) assembling is 0.1～0.2mm.
5. compound two-lip seal according to claim 3 is characterized in that: the gap after described guide surface (10) and working shaft (19) assembling is 0.1～0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210514015.0A CN102979913B (en) | 2012-12-04 | 2012-12-04 | Composite double-lip oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210514015.0A CN102979913B (en) | 2012-12-04 | 2012-12-04 | Composite double-lip oil seal |
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| Publication Number | Publication Date |
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| CN102979913A true CN102979913A (en) | 2013-03-20 |
| CN102979913B CN102979913B (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210514015.0A Active CN102979913B (en) | 2012-12-04 | 2012-12-04 | Composite double-lip oil seal |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6620361B1 (en) * | 2002-07-09 | 2003-09-16 | Federal-Mogul World Wide, Inc. | Method of manufacturing a composite seal |
| CN2888198Y (en) * | 2006-03-07 | 2007-04-11 | 潍柴动力股份有限公司 | Skeleton oil seal |
| EP1862710B1 (en) * | 2006-05-30 | 2009-05-27 | Aktiebolaget SKF | Low-friction annular sealing assembly for a centrifugal pump, in particular an internal combustion engine cooling liquid pump |
| CN201412512Y (en) * | 2009-03-25 | 2010-02-24 | 昆山茂顺密封件工业有限公司 | Combined oil seal |
| CN202091514U (en) * | 2011-05-30 | 2011-12-28 | 泰安力博机电科技有限公司 | Composite oil seal for exposed framework |
| CN202118255U (en) * | 2011-04-13 | 2012-01-18 | 佛山市顺德区亿达汽车密封件有限公司 | Oil seal with silicone adhesive |
| CN202451836U (en) * | 2011-12-19 | 2012-09-26 | 青岛开世密封工业有限公司 | Reversed-lip polytetrafluoroethylene (PTFE) structural oil seal |
| CN202901289U (en) * | 2012-12-04 | 2013-04-24 | 揭阳市天诚密封件有限公司 | Composite double-lip oil seal |
-
2012
- 2012-12-04 CN CN201210514015.0A patent/CN102979913B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6620361B1 (en) * | 2002-07-09 | 2003-09-16 | Federal-Mogul World Wide, Inc. | Method of manufacturing a composite seal |
| CN2888198Y (en) * | 2006-03-07 | 2007-04-11 | 潍柴动力股份有限公司 | Skeleton oil seal |
| EP1862710B1 (en) * | 2006-05-30 | 2009-05-27 | Aktiebolaget SKF | Low-friction annular sealing assembly for a centrifugal pump, in particular an internal combustion engine cooling liquid pump |
| CN201412512Y (en) * | 2009-03-25 | 2010-02-24 | 昆山茂顺密封件工业有限公司 | Combined oil seal |
| CN202118255U (en) * | 2011-04-13 | 2012-01-18 | 佛山市顺德区亿达汽车密封件有限公司 | Oil seal with silicone adhesive |
| CN202091514U (en) * | 2011-05-30 | 2011-12-28 | 泰安力博机电科技有限公司 | Composite oil seal for exposed framework |
| CN202451836U (en) * | 2011-12-19 | 2012-09-26 | 青岛开世密封工业有限公司 | Reversed-lip polytetrafluoroethylene (PTFE) structural oil seal |
| CN202901289U (en) * | 2012-12-04 | 2013-04-24 | 揭阳市天诚密封件有限公司 | Composite double-lip oil seal |
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| Publication number | Publication date |
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| CN102979913B (en) | 2015-01-07 |
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| C14 | Grant of patent or utility model | ||
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Address after: To the north of Guangdong city of Jieyang province Jieyang 522000 industrial transfer Industrial Park Road, Chaoyang West Songtao Street Patentee after: GUANGDONG TIANCHENG SEALS CO.,LTD. Address before: East Rong Dong Industrial Zone 522000 Guangdong Fenglin District of Rongcheng city in Jieyang Province Patentee before: JIEYANG TIANCHENG SEAL COMPONENTS Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A composite double lip oil seal Effective date of registration: 20220930 Granted publication date: 20150107 Pledgee: Industrial and Commercial Bank of China Limited Jieyang Branch Pledgor: GUANGDONG TIANCHENG SEALS CO.,LTD. Registration number: Y2022980017015 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |