CN103671930A - Pneumatic seal ring with irregularly-shaped cross section - Google Patents
Pneumatic seal ring with irregularly-shaped cross section Download PDFInfo
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- CN103671930A CN103671930A CN201310680661.9A CN201310680661A CN103671930A CN 103671930 A CN103671930 A CN 103671930A CN 201310680661 A CN201310680661 A CN 201310680661A CN 103671930 A CN103671930 A CN 103671930A
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- sealing lip
- lip
- sealing
- shaped cross
- seal ring
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Abstract
The invention relates to a pneumatic seal ring with an irregularly-shaped cross section. The pneumatic seal ring comprises a sealing lip, a main sealing lip, a seal ring root portion and an auxiliary sealing lip, wherein the sealing lip, the main sealing lip, the seal ring root portion and the auxiliary sealing lip form a whole through injection molding. A groove is formed between the sealing lip and the main sealing lip, the seal ring root portion is located on the lower portion of the sealing lip, and the tail end of the main sealing lip turns upwards. An arc-shaped face serving as a contact face is arranged at the position, adjacent to the tail end of the main sealing lip, of one side of the main sealing lip, the auxiliary sealing lip is located below the main sealing lip, and the sealing direction of the auxiliary sealing lip is opposite to that of the main sealing lip. Another arc-shaped face serving as a contact face is arranged at the tail end of the auxiliary sealing lip. The pneumatic seal ring can realize bidirectional sealing, and when used in cooperation of other parts, can achieve the purpose of keeping lubrication grease on a seal working face. The pneumatic seal ring can be widely applied to sealing of pistons and piston rods.
Description
Technical field
The present invention relates to a kind of seal ring, the odd-shaped cross section Pneumatic sealing ring of particularly using about a kind of piston and piston rod reciprocating movement sealing.
Background technique
At present, most of Pneumatic sealing ring adopts lubricating grease to be lubricated, and lubricating grease is smeared in advance when assembling.In the course of the work, the sealed circle of lubricating grease on sealed working face (cylinder inner wall, piston rod outer wall) is pushed through two ends, and on sealed working face, lubricating grease can not keep.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of odd-shaped cross section Pneumatic sealing ring, sealing circle can be realized two way sealed, and other component match to realize lubricating grease is remained on sealed working face.
For achieving the above object, the present invention takes following technological scheme: a kind of odd-shaped cross section Pneumatic sealing ring, is characterized in that: it comprises injection moulding all-in-one-piece sealing lip, primary seal lip, seal ring root and inferior sealing lip; Between described sealing lip and described primary seal lip, form a groove, described seal ring root is positioned at described sealing lip bottom, and the end of described primary seal lip upwarps; Described primary seal lip one side is close to its tail end and is provided with one for the arc surface of surface of contact, and described time sealing lip is positioned at described primary seal lip below, and described time sealing lip sealing direction is contrary with described primary seal lip; At described sealing lip end, be provided with another for the arc surface of surface of contact.
The end of described seal ring root is tilted to groove is installed.
Described time sealing lip is less than described primary seal lip.
Between the inferior sealing lip of described odd-shaped cross section Pneumatic sealing ring and one-way sealing seal, form the cavity of a prepacked with grease.
The present invention is owing to taking above technological scheme, it has the following advantages: 1, the present invention consists of injection moulding all-in-one-piece sealing lip, primary seal lip, seal ring root and inferior sealing lip owing to adopting, and inferior sealing lip is positioned at primary seal lip below, the sealing direction of inferior sealing lip is contrary with primary seal lip, and then realizes two way sealed.2, the present invention, because the end of primary seal lip upwarps, does not contact with piston-cylinder inwall or piston rod outer wall, the resistance in the time of therefore can reducing to start.3, the present invention is tilted to groove is installed owing to adopting the end of seal ring root, therefore can realize seal ring in the two way sealed that groove one side is installed.When 4, the present invention uses on piston or piston rod, odd-shaped cross section Pneumatic sealing ring of the present invention and common one-way sealing seal are arranged on piston or piston rod outer casing inner wall face in turn, between two seal rings, form a cavity, can prepacked with grease in this cavity, by this cavity, lubricating grease can be remained on sealed working face preferably.The present invention can be widely used in the sealing of piston and piston rod.
Accompanying drawing explanation
Fig. 1 is the odd-shaped cross section Pneumatic sealing ring plan view of the present invention in the piston used time;
Fig. 2 is the odd-shaped cross section Pneumatic sealing ring sectional view of the present invention in the piston used time;
Fig. 3 is the odd-shaped cross section Pneumatic sealing ring plan view of the present invention in the piston rod used time;
Fig. 4 is the odd-shaped cross section Pneumatic sealing ring sectional view of the present invention in the piston rod used time;
Fig. 5 is that the odd-shaped cross section Pneumatic sealing ring of the present invention in the piston used time used ssembly drawing;
Fig. 6 is that the odd-shaped cross section Pneumatic sealing ring of the present invention in the piston rod used time used ssembly drawing.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1 to 4, the invention provides a kind of odd-shaped cross section Pneumatic sealing ring for piston, piston rod, it comprises injection moulding all-in-one-piece sealing lip 1, primary seal lip 2, seal ring root 3 and inferior sealing lip 4.Between sealing lip 1 and primary seal lip 2, form a groove, for fixing odd-shaped cross section Pneumatic sealing ring.Seal ring root 3 is positioned at sealing lip 1 bottom, and the end 5 of seal ring root 3 is tilted to the installation groove of piston or piston rod, can realize the two way sealed that groove one side is installed.The end 6 of primary seal lip 2 upwarps, and does not contact the resistance in the time of can reducing to start with piston-cylinder inwall or piston rod outer wall; Primary seal lip 2 one sides are close to its end 6 places and are provided with an arc surface 7, and this arc surface 7, can seal compression air for contacting with piston-cylinder inwall or piston rod outer wall.Inferior sealing lip 4 is positioned at primary seal lip 2 belows, and inferior sealing lip 4 is with respect to primary seal lip 2, and inferior sealing lip 4 is much smaller than primary seal lip 2, and sealing direction is contrary with primary seal lip 2, realizes two way sealed; At inferior sealing lip 4 ends, be provided with another arc surface 8, for contacting with piston-cylinder inwall or piston rod outer wall, during use, by inferior sealing lip 4, combine and can realize the sealing to lubricating grease with other existing parts.
In above-described embodiment, as shown in Figure 5, when odd-shaped cross section Pneumatic sealing ring of the present invention is used on piston, odd-shaped cross section Pneumatic sealing ring 9 and piston 10, piston-cylinder 11, common one-way sealing seal 12 are used in combination.Piston 10 weeks upwards, with piston-cylinder 11 surface of contact on be provided with in turn odd-shaped cross section Pneumatic sealing ring 9 and common one-way sealing seal 12, and between the inferior sealing lip 4 of odd-shaped cross section Pneumatic sealing ring 9 and common one-way sealing seal 12, form a cavity 13, can prepacked with grease in cavity 13.In the working procedure of piston-cylinder 11, lubricating grease is closed in cavity 13, can make lubricating grease remain on sealed working face (being piston-cylinder 11 inboard wall of cylinder block) upper with piston 10 to-and-fro motion, keeps at any time good lubricating status.
In above-described embodiment, as shown in Figure 6, when odd-shaped cross section Pneumatic sealing ring of the present invention is used on piston rod, odd-shaped cross section Pneumatic sealing ring 9 and shell 14, piston rod 15, common one-way sealing seal 12 are used in combination.On shell 14 inwalls, with piston rod 15 surface of contact on be provided with in turn odd-shaped cross section Pneumatic sealing ring 9 and common one-way sealing seal 12, between the inferior sealing lip 4 of odd-shaped cross section Pneumatic sealing ring 9 and common one-way sealing seal 12, form cavity 13, can prepacked with grease in cavity 13.In the working procedure of piston rod 15, lubricating grease is closed in cavity 13, can make lubricating grease remain on sealed working face (piston rod 15 outer walls) upper, keeps at any time good lubricating status.
The various embodiments described above are only for illustrating the present invention; the structure of each parts and Placement all can change to some extent; on the basis of technical solution of the present invention; all improvement and equivalents of the connection of indivedual parts and structure being carried out according to the principle of the invention, all should not get rid of outside protection scope of the present invention.
Claims (5)
1. an odd-shaped cross section Pneumatic sealing ring, is characterized in that: it comprises injection moulding all-in-one-piece sealing lip, primary seal lip, seal ring root and inferior sealing lip; Between described sealing lip and described primary seal lip, form a groove, described seal ring root is positioned at described sealing lip bottom, and the end of described primary seal lip upwarps; Described primary seal lip one side is close to its tail end and is provided with one for the arc surface of surface of contact, and described time sealing lip is positioned at described primary seal lip below, and described time sealing lip sealing direction is contrary with described primary seal lip; At described sealing lip end, be provided with another for the arc surface of surface of contact.
2. a kind of odd-shaped cross section Pneumatic sealing ring as claimed in claim 1, is characterized in that: the end of described seal ring root is tilted to groove is installed.
3. a kind of odd-shaped cross section Pneumatic sealing ring as claimed in claim 1, is characterized in that: described time sealing lip is less than described primary seal lip.
4. a kind of odd-shaped cross section Pneumatic sealing ring as claimed in claim 2, is characterized in that: described time sealing lip is less than described primary seal lip.
5. a kind of odd-shaped cross section Pneumatic sealing ring as claimed in claim 1 or 2 or 3 or 4, is characterized in that: the cavity that forms a prepacked with grease between the inferior sealing lip of described odd-shaped cross section Pneumatic sealing ring and one-way sealing seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310680661.9A CN103671930B (en) | 2013-12-12 | 2013-12-12 | A kind of odd-shaped cross section Pneumatic sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310680661.9A CN103671930B (en) | 2013-12-12 | 2013-12-12 | A kind of odd-shaped cross section Pneumatic sealing ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103671930A true CN103671930A (en) | 2014-03-26 |
| CN103671930B CN103671930B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310680661.9A Active CN103671930B (en) | 2013-12-12 | 2013-12-12 | A kind of odd-shaped cross section Pneumatic sealing ring |
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| Country | Link |
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| CN (1) | CN103671930B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379686A (en) * | 2020-04-13 | 2020-07-07 | 申元机电股份有限公司 | Positive and negative pressure dual-purpose oil-free compressor |
| CN114233852A (en) * | 2021-12-17 | 2022-03-25 | 陕西海积信息科技有限公司 | Seal ring and antenna |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3827700A (en) * | 1971-10-01 | 1974-08-06 | S Kaller | Sealing device |
| JPS6027256Y2 (en) * | 1979-09-27 | 1985-08-16 | 株式会社 阪上製作所 | Sealing device |
| GB2190439A (en) * | 1986-05-17 | 1987-11-18 | Festo Kg | Piston and cylinder unit |
| WO1993011380A1 (en) * | 1991-11-27 | 1993-06-10 | Parker Hannifin Corporation | Lubricating seal for pneumatic cylinder |
| JPH09250641A (en) * | 1996-03-18 | 1997-09-22 | Ckd Corp | Packing for sliding |
| JP3530408B2 (en) * | 1998-12-18 | 2004-05-24 | 太陽鉄工株式会社 | Rod packing structure of pneumatic actuator |
| CN101398085A (en) * | 2007-09-26 | 2009-04-01 | Nok株式会社 | Sealing system |
| CN101542170A (en) * | 2007-02-06 | 2009-09-23 | Nok株式会社 | Sealing device and hydraulic cylinder |
| CN201606495U (en) * | 2009-12-29 | 2010-10-13 | 深圳市富洋密封件有限公司 | Airtight hydraulic dustproof sealing ring structure |
| CN203627798U (en) * | 2013-12-12 | 2014-06-04 | 南车二七车辆有限公司 | Pneumatic sealing ring with special-shaped cross section |
-
2013
- 2013-12-12 CN CN201310680661.9A patent/CN103671930B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3827700A (en) * | 1971-10-01 | 1974-08-06 | S Kaller | Sealing device |
| JPS6027256Y2 (en) * | 1979-09-27 | 1985-08-16 | 株式会社 阪上製作所 | Sealing device |
| GB2190439A (en) * | 1986-05-17 | 1987-11-18 | Festo Kg | Piston and cylinder unit |
| WO1993011380A1 (en) * | 1991-11-27 | 1993-06-10 | Parker Hannifin Corporation | Lubricating seal for pneumatic cylinder |
| JPH09250641A (en) * | 1996-03-18 | 1997-09-22 | Ckd Corp | Packing for sliding |
| JP3530408B2 (en) * | 1998-12-18 | 2004-05-24 | 太陽鉄工株式会社 | Rod packing structure of pneumatic actuator |
| CN101542170A (en) * | 2007-02-06 | 2009-09-23 | Nok株式会社 | Sealing device and hydraulic cylinder |
| CN101398085A (en) * | 2007-09-26 | 2009-04-01 | Nok株式会社 | Sealing system |
| CN201606495U (en) * | 2009-12-29 | 2010-10-13 | 深圳市富洋密封件有限公司 | Airtight hydraulic dustproof sealing ring structure |
| CN203627798U (en) * | 2013-12-12 | 2014-06-04 | 南车二七车辆有限公司 | Pneumatic sealing ring with special-shaped cross section |
Non-Patent Citations (1)
| Title |
|---|
| 王思伟: "一种新型往复式气动密封件的设计", 《机械工程与自动化》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379686A (en) * | 2020-04-13 | 2020-07-07 | 申元机电股份有限公司 | Positive and negative pressure dual-purpose oil-free compressor |
| CN114233852A (en) * | 2021-12-17 | 2022-03-25 | 陕西海积信息科技有限公司 | Seal ring and antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103671930B (en) | 2016-08-24 |
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Effective date of registration: 20180119 Address after: 100070 Beijing city Fengtai District South Fourth Ring Road No. 188 District No. 8 Patentee after: Beijing Longxuan Rubber Co., Ltd. Address before: 100072 Beijing city Fengtai District Zhang Guozhuang No. 1 Patentee before: South Locomotive Erqi Vehicle Co., Ltd. |