CN201416636Y - Combined seal ring of piston - Google Patents
Combined seal ring of piston Download PDFInfo
- Publication number
- CN201416636Y CN201416636Y CN2009200557626U CN200920055762U CN201416636Y CN 201416636 Y CN201416636 Y CN 201416636Y CN 2009200557626 U CN2009200557626 U CN 2009200557626U CN 200920055762 U CN200920055762 U CN 200920055762U CN 201416636 Y CN201416636 Y CN 201416636Y
- Authority
- CN
- China
- Prior art keywords
- seal ring
- piston
- lubricating
- combined
- combination
- 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
- 230000001050 lubricating effect Effects 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims description 17
- 229920001971 elastomer Polymers 0.000 claims description 11
- 239000000806 elastomer Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229920006324 polyoxymethylene Polymers 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 2
- 239000004519 grease Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000007423 decrease Effects 0.000 abstract 1
- 239000000314 lubricant Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Images
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- Sealing Devices (AREA)
Abstract
The utility model discloses a combined seal ring of piston, which comprises a seal ring, an elastic body and two shied rings; the elastic body is located at the inner side of the seal ring, the two shield rings are respectively located at both sides of the seal ring and the elastic body, the cylindrical surface of the seal ring is provided with a lubricating groove. The lubricating groove is addedto the cylindrical surface of the seal ring for the combined seal ring of piston, the lubricating groove can store a certain amount of lubricating grease; the lubricating grease can provide lubricating action for the seal ring of the combined seal ring of piston during the working process, and can prevent that the unlubricated friction between the seal ring and the piston cylinder occurs and damages the seal ring; meanwhile, the lubricating grease makes the seal ring in lubricating state for a long time, and decreases the contact area between the sliding surfaces where the seal ring and the piston cylinder contact, and effectively reduces the sliding-frictional resistance, and plays a role in protecting the seal ring of the combined seal ring of piston, thereby extending the service lifeof the combined seal ring of piston.
Description
Technical field
The utility model relates to the oil hydraulic cylinder piston seal, is specifically related to a kind of piston in combination seal ring.
Background technique
At present in the hydraulic jack sealing, the piston in combination seal ring is as a kind of ring structure, it can both play good seal action under high pressure and operating on low voltage pressure, but its working life is unsatisfactory, wherein more common a kind of seal failure mode is exactly the seal wears aggravation that causes greatly because of sliding-frictional resistance, thereby causes shorten sealing life.
The model utility content
The utility model provides a kind of piston in combination seal ring with low sliding-frictional resistance, long service life in order to overcome the deficiency that above prior art exists.
The purpose of this utility model realizes by following technological scheme: this piston in combination seal ring, comprise seal ring, elastomer and two back-up rings, elastomer is positioned at the seal ring inboard, two back-up rings lay respectively at seal ring and elastomeric both sides, and it is characterized in that: the outer round surface of described seal ring is provided with lubricating channels.
As a kind of preferred version, the quantity of described lubricating channels is together, is positioned at the neutral position of seal ring.
As a kind of preferred version, the quantity of described lubricating channels is twice or more than the twice, it is distributed in the outer round surface of seal ring.
According to different working conditions and usage requirement, the sectional shape of described lubricating channels is trapezoidal, semicircle, half elliptic, rectangle or triangle.
As a kind of preferred version, the Manufacturing material of described seal ring is a polyurethane material.
As a kind of preferred version, the Manufacturing material of described back-up ring is a polyformaldehyde material, and elastomeric Manufacturing material is a rubber material.
The utility model has following advantage with respect to prior art: this piston in combination seal ring has increased lubricating channels at the outer round surface of seal ring, and lubricating channels can be stored certain lubricant grease.Lubricant grease can provide the seal ring lubrication in the course of the work of piston in combination seal ring; prevent from dry friction to occur between seal ring and the piston bore and damage seal ring; make seal ring be in lubricating status for a long time; reduce seal ring and piston bore the contact slip surface between area of contact; reduce sliding-frictional resistance effectively; play the effect of the seal ring of protecting the piston in combination seal ring well, thereby prolong the working life of piston in combination seal ring.
It is very little that lubricating channels takies the space of seal ring, can not damage seal ring, also can not influence the sealability of piston in combination seal ring.
Description of drawings
Fig. 1 is the structural representation of a kind of piston in combination seal ring of the utility model.
Fig. 2 is the lubricating channels schematic cross-section of Fig. 1 piston in combination seal ring seal ring.(trapezoidal lubricating channels)
Fig. 3 is the lubricating channels schematic cross-section of the another kind of piston in combination seal ring of the utility model seal ring.(semicircle lubricating channels)
Fig. 4 is the lubricating channels schematic cross-section of another piston in combination seal ring seal ring of the utility model.(half elliptic lubricating channels)
Fig. 5 is the structural representation of the utility model during as piston seal.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment 1:
Piston in combination seal ring as shown in Figure 1 comprises seal ring 1, elastomer 3 and two back-up rings 2, and elastomer 3 is positioned at seal ring 1 inboard, and two back-up rings 2 lay respectively at the both sides of seal ring 1 and elastomer 3, and the outer round surface of seal ring 1 is provided with lubricating channels 4.
According to different working conditions and usage requirement, the sectional shape of lubricating channels 4 can be designed to semicircle as shown in Figure 3, also can be designed to half elliptic as shown in Figure 4.
Seal ring 1 adopts high performance polyurethane cast mold pressing to form, and this pressing mode can improve the compactness of polyurethane effectively, thereby guarantees the material quality of seal ring 1.Seal ring 1 by machining technique, processes lubricating channels 4 at its outer round surface after compression molding.
The Manufacturing material of back-up ring 2 is a polyformaldehyde material, and the Manufacturing material of elastomer 3 is a rubber material.
Embodiment 2:
Fig. 5 is the actual use condition of the utility model during as piston seal, all bears pressure P about piston, and whole piston in combination seal ring bears the dextrosinistral system pressure that force value is P jointly.
Above-mentioned embodiment is a preferred embodiment of the present utility model; can not limit claim of the present utility model; other any change that does not deviate from the technical solution of the utility model and made or other equivalent substitute mode are included within the protection domain of the present utility model.
Claims (6)
1, piston in combination seal ring comprises seal ring, elastomer and two back-up rings, and elastomer is positioned at the seal ring inboard, and two back-up rings lay respectively at seal ring and elastomeric both sides, and it is characterized in that: the outer round surface of described seal ring is provided with lubricating channels.
2, piston in combination seal ring according to claim 1 is characterized in that: the quantity of described lubricating channels is together, is positioned at the neutral position of seal ring.
3, piston in combination seal ring according to claim 1 is characterized in that: the quantity of described lubricating channels is twice or more than the twice, it is distributed in the outer round surface of seal ring.
4, piston in combination seal ring according to claim 1 is characterized in that: the sectional shape of described lubricating channels is trapezoidal, semicircle, half elliptic, rectangle or triangle.
5, piston in combination seal ring according to claim 1 is characterized in that: the Manufacturing material of described seal ring is a polyurethane material.
6, piston in combination seal ring according to claim 1 is characterized in that: the Manufacturing material of described back-up ring is a polyformaldehyde material, and elastomeric Manufacturing material is a rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200557626U CN201416636Y (en) | 2009-04-30 | 2009-04-30 | Combined seal ring of piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200557626U CN201416636Y (en) | 2009-04-30 | 2009-04-30 | Combined seal ring of piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201416636Y true CN201416636Y (en) | 2010-03-03 |
Family
ID=41793053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200557626U Expired - Lifetime CN201416636Y (en) | 2009-04-30 | 2009-04-30 | Combined seal ring of piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201416636Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221089A (en) * | 2011-03-28 | 2011-10-19 | 许晓华 | Novel sealing piece |
| CN102261466A (en) * | 2011-06-18 | 2011-11-30 | 湖北航特科技有限责任公司 | Seal ring for automobile brake caliper piston |
| CN102261464A (en) * | 2010-05-19 | 2011-11-30 | Smc株式会社 | Fluid pressure apparatus |
| CN104214164A (en) * | 2013-05-31 | 2014-12-17 | 北京谊安医疗系统股份有限公司 | Piston assembly |
| CN104234976A (en) * | 2014-09-09 | 2014-12-24 | 仪征天华活塞环有限公司 | Piston ring for car air conditioning compressor |
| US9194495B2 (en) | 2010-05-19 | 2015-11-24 | Smc Kabushiki Kaisha | Fluid pressure apparatus |
-
2009
- 2009-04-30 CN CN2009200557626U patent/CN201416636Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261464A (en) * | 2010-05-19 | 2011-11-30 | Smc株式会社 | Fluid pressure apparatus |
| US9127771B2 (en) | 2010-05-19 | 2015-09-08 | Smc Kabushiki Kaisha | Fluid pressure apparatus |
| US9194495B2 (en) | 2010-05-19 | 2015-11-24 | Smc Kabushiki Kaisha | Fluid pressure apparatus |
| CN102261464B (en) * | 2010-05-19 | 2016-03-30 | Smc株式会社 | Fluid pressure device |
| CN102221089A (en) * | 2011-03-28 | 2011-10-19 | 许晓华 | Novel sealing piece |
| CN102261466A (en) * | 2011-06-18 | 2011-11-30 | 湖北航特科技有限责任公司 | Seal ring for automobile brake caliper piston |
| CN104214164A (en) * | 2013-05-31 | 2014-12-17 | 北京谊安医疗系统股份有限公司 | Piston assembly |
| CN104234976A (en) * | 2014-09-09 | 2014-12-24 | 仪征天华活塞环有限公司 | Piston ring for car air conditioning compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100303 |
|
| CX01 | Expiry of patent term |