CN104033609A - Sealing ring - Google Patents
Sealing ring Download PDFInfo
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- CN104033609A CN104033609A CN201310508427.8A CN201310508427A CN104033609A CN 104033609 A CN104033609 A CN 104033609A CN 201310508427 A CN201310508427 A CN 201310508427A CN 104033609 A CN104033609 A CN 104033609A
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- Prior art keywords
- seal ring
- parts
- face
- lip
- sides
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- Gasket Seals (AREA)
- Sealing Devices (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The present invention provides a sealing ring which can improve the sealing performance. In order to realize the purpose, the sealing ring is characterized in that in the sealing ring (100), an inner peripheral surface (110) and an outer peripheral surface (120) adopt cylindrical surface shapes, side surfaces (130 and 140) on two sides of the sealing ring (100) are planes, and annular lips (150 and 160) which are firstly far from the plane parts and inclined and then close to the plane parts and inclined from the inner side to the outer side in the radial direction are arranged on the side surfaces (130 and 140) on two sides; and for the lips (150 and 160), the inclination of inclined parts (151 and 161) relative to the plane parts is larger than that of inclined parts (152 and 162) relative to the plane parts, wherein the inclined parts (151 and 161) are inclined far from the plane parts from the inner side to the outer side in the radial direction, and the inclined parts (152 and 162) are inclined close to the plane parts from the inner side to the outer side in the radial direction.
Description
Technical field
The present invention relates to the seal ring in the gap between two parts end faces of a kind of sealing.
Background technique
In the prior art, in the oil pressure pump of axial piston pump etc., there is seal ring, utilize sealing ring to seal the gap having between two parts end faces of the oily path of circulation.As above-mentioned seal ring, generally use the O ring of rubber-like elasticity system.But, owing to changing at oil pressure under (pulsation etc.) environment greatly, use O ring to cause action unstable, and sealing is unstable, therefore uses and has the square ring that cross section is rectangle.
But, seal ring is being installed on to the position that degrees of freedom is large, or is being installed on while pulsing very large position, even if use square ring also cannot obtain sufficient sealing.That is, in these cases, because causing seal ring diameter repeatedly to expand to dwindle, pulsation is out of shape.Produce thus the seal ring inner side of flowing through oil a little leak into the phenomenon in seal ring outside.
Prior art document
Patent documentation
Patent documentation 1: a day the present patent application discloses 2000-356182 communique
Patent documentation 2: a day the present patent application discloses 2004-285932 communique
Patent documentation 3: a day the present patent application discloses 2003-172227 communique
Summary of the invention
Object of the present invention, is to provide a kind of seal ring that improves sealing.
The present invention is for addressing the above problem the following means that adopted.
That is, seal ring of the present invention, is characterized in that:
It is around the opening portion that is formed at the sealed object fluid passage of the 1st parts, and be close to the end face of the plane shape of the 1st parts, and around the opening portion that is formed at the sealed object fluid passage of the 2nd parts, and be close to the end face of the plane shape of the 2nd parts, thus, with the state around sealed object fluid passage, seal the gap between the 1st parts end face and the 2nd parts end face, described seal ring is annular, by rubber-like elastic body, is made, and it is characterized in that:
Inner peripheral surface and outer circumferential face form respectively cylindrical, and the side of both sides forms respectively plane shape, and
On side, both sides, be respectively arranged with annular lip, this lip first tilts away from planar section laterally from radially inner side, reacceess planar section and tilts;
Set above-mentioned lip from radially inner side laterally, the incline section tilting away from planar section and the inclination of planar section, be greater than from radially inner side laterally, approaches planar section and the incline section that tilts and the inclination of planar section.
According to the present invention, because the side of sealing lip both sides is respectively plane, waits and compare with O ring, can make having stable behavior.Even due to the pressure change (pulsation) of sealed object fluid, cause seal ring diameter repeatedly to expand and dwindle and be out of shape, also can, by the seal ring of said structure is set, suppress sealed object fluid to radial outside seepage.
Preferably be arranged at respectively the described lip of side, both sides, be arranged at the end of the inner peripheral surface side of each side.
Thus, can effectively suppress sealed object fluid leaks to the radial outside of seal ring.
Preferably, in each side, a plurality of described lips are set respectively with one heart.
Thus, can utilize the part of each lip, suppress sealed object fluid to radial outside seepage; And and can between lip and lip, keep sealed object fluid, two effect stacks, can further suppress sealed object fluid leaks.
Preferably be arranged at respectively in a plurality of described lip of side, both sides the lip of inner peripheral surface side, be arranged at the end of the inner peripheral surface side of each side.
Thus, as mentioned above, can effectively suppress sealed object fluid and drain to seal ring footpath laterally.
Preferably at described the 1st parts, be provided with the annular notch-like portion along passage opening portion, and this notch-like portion have end face and the cylndrical surface of plane shape;
Described seal ring, the side in side, both sides is close to the end face of the plane shape of described notch-like portion, and outer circumferential face can be close to the cylndrical surface of described notch-like portion.
" notch-like portion " represents to form the position of fluting state, might not be the position obtaining by cutting.
Thus, can, under the high state of sealed object hydrodynamic pressure, by making seal ring enlarged-diameter, make its outer circumferential face be close to the cylndrical surface of notch-like portion, and further improve sealability.
Above-mentioned each structure can be used in combination within the bounds of possibility.
As described above, according to the present invention, can improve sealing.
Accompanying drawing explanation
Fig. 1 means the constructed profile map of the sealing configuration of the embodiment of the present invention.
Fig. 2 means the constructed profile map of the sealing configuration of the embodiment of the present invention.
Fig. 3 is the constructed profile map of the seal ring of the embodiment of the present invention 1.
Fig. 4 is the enlarged view of a part of Fig. 3.
Fig. 5 is the constructed profile map of the seal ring of the embodiment of the present invention 2.
Description of reference numerals
100 seal rings
110 inner peripheral surfaces
120 outer circumferential faces
130,140 sides
150,160,150a, 150b, 150c, 160a, 160b, 160c lip
151,161 incline sections
152,162 incline sections
170,180 curved surfaces
200 the 1st parts
210 paths
220 notch-like portions
221 end faces
222 cylndrical surface
230 curved surfaces
300 the 2nd parts
310 paths
320 end faces
R path
α, β angle of inclination
Embodiment
With reference to the accompanying drawings, according to embodiment, describe embodiments of the present invention in detail.But, unless have specific record, otherwise the specification of the component parts of recording in following examples, material, shape, its relatively configuration etc. not as limiting the scope of the invention.
(embodiment 1)
With reference to Fig. 1～Fig. 4, the seal ring of the embodiment of the present invention 1 is described.In the present embodiment, the situation of using seal ring in the oil pressure pump of axial piston pump etc. of take describes as example.Therefore, sealed object fluid is oil, and oil is to follow the state flow of pulsation through path.
< sealing configuration >
Especially with reference to Fig. 1 and Fig. 2, to having used the sealing configuration of the seal ring 100 of the embodiment of the present invention to describe.Fig. 1 represents oil pressure in the path R state to the high malleation of the inner peripheral surface effect of seal ring 100; Fig. 2 represents oil pressure in the path R state to the low negative pressure of the inner peripheral surface effect of seal ring 100.In Fig. 1 and Fig. 2, seal ring 100 represents with sketch.Fig. 1,2 is the constructed profile map that the face of the medial axis from comprising seal ring 100 is cut open.
The seal ring 100 of the present embodiment, for sealing the gap between the end face of 2 parts (being referred to as below the 1st parts 200 and the 2nd parts 300).In the 1st parts 200 and the 2nd parts 300, be formed with respectively the oily path 210,310 of circulation herein.And above-mentioned the 1st parts 200 and the 2nd parts 300 are fixed with the opposed state of both ends of the surface, and path 210 is connected with path 310.Thus, in the present embodiment, from the 2nd parts 300 side to the 1 parts 200 sides, be formed with the oily stream (path R) of circulation.In order to suppress the gap oil leakage from the both ends of the surface of the 1st parts 200 and the 2nd parts 300, use and have seal ring 100.Below carry out more specific description.
Seal ring 100 is around the opening portion that is formed at the path 210 of the 1st parts 200, and is close to the plane end face 221 of the 1st parts 200; And around the opening portion that is formed at the path 310 of the 2nd parts 300, and be close to the plane end face 320 of the 2nd parts 300.Thus, seal ring 100, with the state of the path R around oily, seals the gap between the end face 221 of the 1st parts 200 and the end face 320 of the 2nd parts 300.
In the present embodiment, at the 1st parts 200, be provided with along the annular notches shape portion 220 of the opening portion of path 210.This notch-like portion 220 comprises above-mentioned plane end face 221 and cylndrical surface 222.The plane end face 221 of notch-like portion 220 is close in the side 130 that seal ring 100 is designed to a side in the side of both sides, and outer circumferential face 120 is close to the cylndrical surface 222 of notch-like portion 220.
As mentioned above, oily to follow the state flow of pulsation through path R, the oil pressure cyclical movement in path R.Therefore, under the high state of oil pressure in path R, the inner peripheral surface effect malleation to seal ring 100, seal ring 100 forms the state (with reference to Fig. 1) of enlarged-diameter.In Fig. 1, arrow X1 represents the state of the oil flow of high pressure.Thus, the outer circumferential face 120 of seal ring 100 is close to the cylndrical surface 222 of notch-like portion 220.Under the state of the low fuel pressure in path R, the inner peripheral surface effect negative pressure to seal ring 100, seal ring 100 forms the state (with reference to Fig. 2) of reduced.In Fig. 2, arrow X2 represents the state of the oil flow of low pressure.Thus, the outer circumferential face 120 of seal ring 100 leaves the cylndrical surface 222 of notch-like portion 220.
Because the oil pressure in path R periodically changes, cause seal ring 100 enlarged-diameter and reduced repeatedly.Therefore, be created in the slide part office between seal ring 100 and the end face 221 of the 1st parts 200, the phenomenon that the side 130 of seal ring 100 moves back and forth diametrically with respect to end face 221.Slide part office between the end face 320 of seal ring 100 and the 2nd parts 300 is also identical.Therefore, if do not process especially, be created in seal ring 100 flows inside oil a little leak into the phenomenon in the outside (atmospheric side (A)) of seal ring 100.So, the seal ring 100 of the present embodiment, employing can suppress the structure of the phenomenon of above-mentioned oil impregnate.
< seal ring >
With reference to Fig. 3 and Fig. 4, the seal ring 100 of the present embodiment is described in more details especially.Fig. 3 is the part of constructed profile map for the seal ring 100 of the present embodiment, only represents section.In addition, in Fig. 3, dot the position of the end face 221 of notch-like portion 220 and the end face 320 of cylndrical surface 222 and the 2nd parts 300 of the 1st parts 200, to be easy to judge the position relationship of seal ring 100, the 1st parts 200 and the 2nd parts 300.Fig. 4 is arranged at the sectional drawing that the part of the annular lip 150,160 of seal ring 100 is amplified.The part that Fig. 3,4 is the constructed profile map cut open from the face of the medial axis that comprises seal ring 100.
Seal ring 100 is annular elements of being made by rubber-like elastic body, and basic shape is so-called square ring.That is, it is planar that inner peripheral surface 110 and the outer circumferential face 120 of seal ring 100 is respectively cylinder, and the side 130,140 of both sides is respectively plane.Herein, seal ring 100 is to be arranged on the state of the notch-like portion 220 of the 1st parts 200, fixing by the 1st parts 200 and the 2nd parts 300.Thus, seal ring 100, by end face 320 compressions of the end face 221 of the 1st parts 200 and the 2nd parts 300, forms the state of being close to above-mentioned end face 221,320.
And, in the side 130,140 of the both sides of seal ring 100, be provided with from radially inner side and first leave planar section toward the outer side and tilt respectively, reaccees planar section and the annular lip 150,160 that tilts.In the present embodiment, above-mentioned lip 150,160 is arranged at the end of inner peripheral surface side.Above-mentioned lip 150,160 is designed to, incline section 151,161 inclinations with respect to planar section that tilt away from planar section laterally from radially inner side, are greater than from radially inner side and approach planar section laterally and incline section 152,162 inclinations with respect to planar section that tilt.That is, set incline section 151,161 tilt angle alpha with respect to planar section, be greater than incline section 152,162 inclination angle beta with respect to planar section.
Thus, even when lip 150 moves back and forth and slides with respect to the end face 221 of the 1st parts 200, also can suppress leakage of oil.Because its principle is the principles well-known based in reciprocating movement sealing, therefore only do simple declaration.When the front end opposing end surface 221 of lip 150 slides, on the surface of end face 221, form oil film.The thickness of this oil film is determined by tilt angle alpha, the β of the incline section 151,152 of lip 150., angle of inclination is larger, the thickness of oil film is thinner.More particularly, seal ring 100 is formed at the oil slick thickness of end face 221 while moving to right in Fig. 3,4, than move to left in Fig. 3,4 to time to be formed at the oil film of end face 221 thin.Therefore, the amount of returning of oil is more than leakage of oil amount, can suppress leakage of oil.For lip 160, be also identical.In the present embodiment, as mentioned above, owing to lip 150,160 being arranged to the end of inner peripheral surface side, so can effectively suppress the radial outside (atmospheric side (A)) that oil leaks to seal ring 100.
In the seal ring 100 of the present embodiment, between a side side 130 and outer circumferential face 120, and between the opposing party's side 140 and outer circumferential face 120, by curved surface 170, the so-called R face of 180() connect.And, between the end face 221 of notch-like portion 220 and cylndrical surface 222 also by the so-called R face of curved surface 230() be connected.Like this, by utilizing curved surface 170,180 to connect respectively between a side side 130 and outer circumferential face 120, and between the opposing party's side 140 and outer circumferential face 120, can suppress oil seepage to radial outside (atmospheric side (A)).About above-mentioned curved surface 170,180,230 positions, even if form chamfer shape (even in the present embodiment for forming the conical surface), also can access identical effect.
Seal ring 100 is Rotational Symmetry shape, and forms median plane (median plane between a side side 130 and the opposing party's the side 140) symmetric shape with respect to thickness direction.Therefore,, when seal ring 100 is installed on to notch-like portion 220, do not need to distinguish positive and negative.
The advantage > of the seal ring of < the present embodiment
According to the seal ring 100 of the present embodiment, because the side 130,140 of its both sides is respectively plane, waits and compare with O ring, can make having stable behavior.In addition, even be out of shape because oil pressure change (pulsation) causes seal ring 100 diameters repeatedly to expand to dwindle, but owing to being provided with lip 150,160, therefore can suppress oil seepage to radial outside (atmospheric side (A)), thereby can suppress leakage of oil.Can utilize lip 150,160 to suppress the reason of leakage of oil, as mentioned above, be based on known principle in reciprocating movement sealing.
In the present embodiment, under the high state of oil pressure, seal ring 100 enlarged-diameter, its outer circumferential face 120 is close to the cylndrical surface 222 of the notch-like portion 220 that is arranged at the 1st parts 200.Thus, can further improve sealability.
In seal ring 100, between a side side 130 and outer circumferential face 120, and between the opposing party's side 140 and outer circumferential face 120, by curved surface 170,180, connect.Thus, can suppress to cause oil seepage to radial outside because of a side side 130 and the position between outer circumferential face 120 and the opposing party's side 140 and the position between outer circumferential face 120.
(embodiment 2)
In Fig. 5, represent embodiments of the invention 2.In above-described embodiment 1, the side for seal ring both sides has been described, the situation of annular lip is set at 1 position respectively; In the present embodiment, the side for the both sides of seal ring is described, the situation of annular lip is set at a plurality of positions respectively.Because all the other structures are identical with embodiment 1 with effect, thus for same structure, partly adopt identical reference character, and the description thereof will be omitted.
Fig. 5 is the part of constructed profile map for the seal ring 100 of the embodiment of the present invention 2.In addition, the part that Fig. 5 is the constructed profile map cut open from the face of the medial axis that comprises seal ring 100.
The seal ring 100 of the present embodiment, is also the annular element of being made by rubber-like elastic body, and basic shape is so-called square ring.That is, inner peripheral surface 110 and the outer circumferential face 120 of seal ring 100 are respectively cylndrical surface, and the side 130,140 of both sides is respectively plane.
And, in the side 130,140 of the both sides of seal ring 100, be respectively arranged with and a plurality ofly from radially inner side, first away from planar section, tilt toward the outer side, reaccees planar section and annular lip 150a, 150b, the 150c that tilt, 160a, 160b, 160c.In above-described embodiment 1, the side 130,140 in the both sides of seal ring 100, is provided with lip 150,160 1 position respectively, unlike this, in the present embodiment, is provided with one heart a plurality of lip 150a, 150b, 150c, 160a, 160b, 160c.About the allocation position of lip 150a, 160a, identical with the allocation position of lip 150,160 in the seal ring 100 of above-described embodiment 1.
Above-mentioned lip 150a, 150b, 150c, 160a, 160b, 160c, also with above-described embodiment 1 in lip 150,160 in the same manner, be designed to the incline section that first tilts away from planar section laterally from radially inner side with respect to the inclination of planar section, be greater than from radially inner side approach planar section laterally and the incline section that tilts with respect to the inclination of planar section.
In the seal ring 100 of the present embodiment, between a side side 130 and outer circumferential face 120, and between the opposing party's side 140 and outer circumferential face 120, by curved surface 170,180, connect.
In the seal ring 100 of the present embodiment as above, can obtain the action effect identical with the situation of above-described embodiment 1.Under the situation of the seal ring 100 of the present embodiment, be arranged at respectively a plurality of lip 150a, 150b, the 150c of the side 130,140 of both sides, 160a, 160b, 160c, with each concentric setting in side 130,140.Thus, can utilize each lip 150a, 150b, 150c, 160a, 160b, 160c, suppress oil seepage to radial outside, and oil can be remained between lip and lip, both effect stacks, can further suppress leakage of oil.Owing to maintaining oil between lip and lip, therefore also there is the effect that can suppress skimming wear.For the sectional area of seal ring 100, because embodiment 1 can do littlely, therefore aspect space, embodiment 1 is more favourable.
(other)
In the above-described embodiment, only illustrated the 1st parts 200 have been arranged to notch-like portion 220, and the situation of in this notch-like portion 220, seal ring 100 being installed, but also can notch-like portion be similarly set in the 2nd parts 300 1 sides, and seal ring 100 is arranged on by the formed space of notch-like portion on the two.
Claims (5)
1. a seal ring, it is around the opening portion that is formed at the sealed object fluid passage of the 1st parts, and be close to the end face of the plane shape of the 1st parts, and around the opening portion that is formed at the sealed object fluid passage of the 2nd parts, and be close to the end face of the plane shape of the 2nd parts, thus, with the state around sealed object fluid passage, the gap between sealing the 1st parts end face and the 2nd parts end face, described seal ring is annular, by rubber-like elastic body, made, it is characterized in that:
Inner peripheral surface and outer circumferential face form respectively cylindrical, and the side of both sides forms respectively plane shape, and
On side, both sides, be respectively arranged with annular lip, this lip first tilts away from planar section laterally from radially inner side, reacceess planar section and tilts;
Set above-mentioned lip from radially inner side laterally, the incline section tilting away from planar section and the inclination of planar section, be greater than from radially inner side laterally, approaches planar section and the incline section that tilts and the inclination of planar section.
2. seal ring according to claim 1, is characterized in that, is arranged at respectively the described lip of side, both sides, is arranged at the end of the inner peripheral surface side of each side.
3. seal ring according to claim 1, is characterized in that, in each side, a plurality of described lips is set respectively with one heart.
4. seal ring according to claim 3, is characterized in that, is arranged at respectively the lip of inner peripheral surface side in a plurality of described lip of side, both sides, is arranged at the end of the inner peripheral surface side of each side.
5. according to the seal ring described in claim 1,2,3 or 4, it is characterized in that:
At described the 1st parts, be provided with the annular notch-like portion along passage opening portion, and this notch-like portion have end face and the cylndrical surface of plane shape;
Described seal ring, the side in side, both sides is close to the end face of the plane shape of described notch-like portion, and outer circumferential face can be close to the cylndrical surface of described notch-like portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013043034A JP2014169770A (en) | 2013-03-05 | 2013-03-05 | Seal ring |
| JP2013-043034 | 2013-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104033609A true CN104033609A (en) | 2014-09-10 |
Family
ID=50510165
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320660185.XU Expired - Fee Related CN203560444U (en) | 2013-03-05 | 2013-10-24 | Sealing ring and sealing structure |
| CN201310508427.8A Pending CN104033609A (en) | 2013-03-05 | 2013-10-24 | Sealing ring |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320660185.XU Expired - Fee Related CN203560444U (en) | 2013-03-05 | 2013-10-24 | Sealing ring and sealing structure |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2014169770A (en) |
| CN (2) | CN203560444U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014169770A (en) * | 2013-03-05 | 2014-09-18 | Nok Corp | Seal ring |
| CN110159760A (en) * | 2019-04-29 | 2019-08-23 | 海洋王照明科技股份有限公司 | Sealing element, end face seal structure and lamps and lanterns |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2031863U (en) * | 1988-04-25 | 1989-02-01 | 天津市开关厂 | Ring grooved seal washer useful in plane sealing |
| CN2365462Y (en) * | 1998-06-02 | 2000-02-23 | 邓十洲 | Pump ring sealing washer |
| JP2000356182A (en) * | 1999-06-15 | 2000-12-26 | Daikin Ind Ltd | Axial piston pump |
| JP2004285932A (en) * | 2003-03-24 | 2004-10-14 | Shin Caterpillar Mitsubishi Ltd | Pump device |
| CN1692245A (en) * | 2002-11-28 | 2005-11-02 | 株式会社富士金 | Fluid coupling and method of designing the same |
| CN203560444U (en) * | 2013-03-05 | 2014-04-23 | Nok株式会社 | Sealing ring and sealing structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5430154U (en) * | 1977-08-02 | 1979-02-27 | ||
| DE3828692A1 (en) * | 1988-08-24 | 1990-03-15 | Busak & Luyken Gmbh & Co | ARRANGEMENT FOR SEALING A FLOATING ROD |
| KR20120058978A (en) * | 2010-11-30 | 2012-06-08 | 주식회사 파카하니핀 커넥터 | Sealing material on hydraulic flange |
-
2013
- 2013-03-05 JP JP2013043034A patent/JP2014169770A/en active Pending
- 2013-10-24 CN CN201320660185.XU patent/CN203560444U/en not_active Expired - Fee Related
- 2013-10-24 CN CN201310508427.8A patent/CN104033609A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2031863U (en) * | 1988-04-25 | 1989-02-01 | 天津市开关厂 | Ring grooved seal washer useful in plane sealing |
| CN2365462Y (en) * | 1998-06-02 | 2000-02-23 | 邓十洲 | Pump ring sealing washer |
| JP2000356182A (en) * | 1999-06-15 | 2000-12-26 | Daikin Ind Ltd | Axial piston pump |
| CN1692245A (en) * | 2002-11-28 | 2005-11-02 | 株式会社富士金 | Fluid coupling and method of designing the same |
| JP2004285932A (en) * | 2003-03-24 | 2004-10-14 | Shin Caterpillar Mitsubishi Ltd | Pump device |
| CN203560444U (en) * | 2013-03-05 | 2014-04-23 | Nok株式会社 | Sealing ring and sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014169770A (en) | 2014-09-18 |
| CN203560444U (en) | 2014-04-23 |
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| PB01 | Publication | ||
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Application publication date: 20140910 |