CN107110360A - Sealing ring - Google Patents

Abstract

In order to provide a kind of sealing ring for the leakage rate that can be manufactured inexpensively by injection moulding and fluid can be reduced, aforementioned seal circle is by thermoplastic resin composition, it is formed integrally as at the one of circumference having apertured circular global shape, with circle main body and the 1st convex portion（21）, the 2nd convex portion（22）, foregoing 1st convex portion（21）, the 2nd convex portion（22）Set from being dashed forward in the circumferential from the 1st end of circle main body, the 2nd end, the shape of cross section of circle main body is rectangle, the 2nd convex portion（22）Shape of cross section be formed triangle, and the 1st convex portion（21）With with the 2nd convex portion（22）Triangle base inclined plane（24）In the inclination corresponding surface of parallel shape（23）, in the 1st convex portion（21）With the 2nd convex portion（22）Under the gap closure state overlapped, the 1st convex portion（21）With the 2nd convex portion（22）It is configured to not from the generally rectangular size exceeded.

Description

Sealing ring

Technical field

The present invention relates to sealing ring.

Background technology

In the past, it as we all know there are such as lower seal, aforementioned seal circle, which has at the one of circumference to have, apertured substantially to be justified The global shape of ring-type, with circle main body, from the both ends of the circle main body to circumferential prominent the 1st convex portion and the 2nd convex portion, is carried out The sealing that can be between dynamic vortex and housing of compressor, its material mainly uses polytetrafluoroethylene (PTFE)（PTFE）（For example, referring to patent Document 1, patent document 2）.

Patent document 1:Japanese Unexamined Patent Publication 2007-247526 publications.

Patent document 2:Japanese Unexamined Patent Publication 8-276508 publications.

Conventional this sealing ring mechanically cuts into slices cylindric polytetrafluoroethylene (PTFE) raw material first, then by cutting Cut, grind, the machining such as cutting off processing is manufactured.

Therefore, conventional sealing ring has a disadvantage that, expends the machining period of machining etc., spillage of material also more hair Raw, manufacturing cost is also higher.

On the other hand, it can also be manufactured, but in this case, had a disadvantage that, the 1st convex portion and the 2nd by injection moulding Sealing at the seam areas of convex portion declines, the fluid spilt from the seam areas（Oil）Leakage rate it is excessive.Swinging examination In testing, have confirmed that compared with polytetrafluoroethylene (PTFE) sealing ring, fluid（Oil）Leakage rate is substantially excessive.Stream from sealing position It is functionally undesirable that body leakage, which terrifically increases in compressor,.In addition, with can dynamic vortex, housing it is flat by sealing The increase of the frictional resistance of the sliding contact surface of face sliding contact, slip during swing becomes unstable, as make the 1st convex portion and The seal clearance size of the seam areas of 2nd convex portion changes, the main cause for increasing the leakage rate of fluid.

The content of the invention

Therefore, it is an object of the present invention to provide a kind of sealing ring, aforementioned seal circle can be made up of thermoplastic resin The injection moulding of thing is manufactured inexpensively, and can reduce the leakage rate of the fluid from seam areas.Especially, it is therefore intended that A kind of sealing ring for being suitable for carrying out the compressor of eddying motion is provided.

A kind of sealing ring of the present invention is formed as having apertured circular global shape at the one of circumference, with circle Main body and the 1st convex portion, the 2nd convex portion, foregoing 1st convex portion, the 2nd convex portion by from the 1st end of the circle main body, the 2nd end in circumference On be protrusively provided, overall to be integrally formed by thermoplastic resin composition, the shape of cross section of above-mentioned circle main body is rectangle, Above-mentioned 1st convex portion and the 2nd convex portion by the cross section of the rectangle of above-mentioned circle main body by two points of cut-off rule, by the 1st corresponding surface, 2 corresponding surfaces are faced each other, and then, above-mentioned 1st convex portion is to be formed with the horizontal stroke in the portion of pruning in the above-mentioned 1st obverse opposite surface side Cross sectional shape, is set to, under the gap closure state that above-mentioned 1st convex portion and above-mentioned 2nd convex portion overlap, and the above-mentioned 1st is convex The size that the contour line of portion and above-mentioned 2nd convex portion not from the cross section of above-mentioned circle main body exceeds.

In addition, a kind of sealing ring of the present invention is formed as having apertured circular global shape at the one of circumference, With circle main body and the 1st convex portion, the 2nd convex portion, foregoing 1st convex portion, the 2nd convex portion are by from the 1st end, the 2nd end of the circle main body It is protrusively provided in the circumferential, overall to be integrally formed by thermoplastic resin composition, the shape of cross section of above-mentioned circle main body For, by with drawer at movable side by sealing surface and affixed side by the corner part of sealing surface it is corresponding, on a generally rectangular corner for pair Above-mentioned other generally rectangular corner otch at angle, form notch, above-mentioned 1st convex portion and the 2nd convex portion will have above-mentioned otch Phase is carried out in the cross section of the above-mentioned circle main body of the shape of cross section in portion by two points of cut-off rule by the 1st corresponding surface, the 2nd corresponding surface Mutually face, above-mentioned 1st convex portion be formed with the above-mentioned notch of above-mentioned circle main body be in sequential like the cross section shape for pruning portion Shape, is set to, under the gap closure state that above-mentioned 1st convex portion and above-mentioned 2nd convex portion overlap, above-mentioned 1st convex portion and upper The 2nd convex portion is stated not from the above-mentioned generally rectangular size exceeded.

In addition, above-mentioned circle main body is possessed for the resistance that rubs with drawer at movable side by the 1st sliding contact surface of sealing surface sliding contact The shallow slot shape notch that power reduces.

In addition, above-mentioned circle main body is configured to drawer at movable side by the 1st sliding contact surface of sealing surface sliding contact, it is by friction The low material of number covers to be formed to reduce frictional resistance.

In addition, a kind of sealing ring of the present invention is formed as having apertured circular global shape at the one of circumference, With circle main body and the 1st convex portion, the 2nd convex portion, foregoing 1st convex portion, the 2nd convex portion are by from the 1st end, the 2nd end of the circle main body It is protrusively provided in the circumferential, overall to be integrally formed by thermoplastic resin composition, the shape of cross section of above-mentioned circle main body For circle, above-mentioned 1st convex portion and the 2nd convex portion by the circular cross section of above-mentioned circle main body by two points of cut-off rule, by the 1st pair Answer face, the 2nd corresponding surface to face each other, be set to, the gap closure overlapped in above-mentioned 1st convex portion and above-mentioned 2nd convex portion Under state, the size that contour line of above-mentioned 1st convex portion and above-mentioned 2nd convex portion not from the cross section of above-mentioned circle main body exceeds.

In addition, a kind of sealing ring of the present invention is formed as having apertured circular global shape at the one of circumference, With circle main body and the 1st convex portion, the 2nd convex portion, foregoing 1st convex portion, the 2nd convex portion are by from the 1st end, the 2nd end of the circle main body It is protrusively provided in the circumferential, overall to be integrally formed by thermoplastic resin composition, the shape of cross section of above-mentioned circle main body For circle, above-mentioned 1st convex portion and the 2nd convex portion by the circular cross section of above-mentioned circle main body by two points of cut-off rule, by the 1st pair Face, the 2nd corresponding surface is answered to face each other, and then, above-mentioned 1st convex portion is to be formed with to cut in the above-mentioned 1st obverse opposite surface side The shape of cross section in portion is removed, is set to, under the gap closure state that above-mentioned 1st convex portion and above-mentioned 2nd convex portion overlap, on State the size that the contour line of the 1st convex portion and above-mentioned 2nd convex portion not from the cross section of above-mentioned circle main body exceeds.

In addition, the above-mentioned circle main body of above-mentioned opening-wide state is configured to, relative to the central point in above-mentioned gap, 180 ° ± There is radius of curvature in the range of 30 ° for maximum sized position, be set to, from the maximum sized position respectively to above-mentioned the 1 end, the 2nd end, with approaching in the circumferential, radius of curvature reduces, and is overlapped in above-mentioned 1st convex portion and the 2nd convex portion Under the closure state of gap, global shape is in circular.

In addition, a kind of sealing ring of the present invention is formed as having apertured circular global shape at the one of circumference, With circle main body and the 1st convex portion, the 2nd convex portion, foregoing 1st convex portion, the 2nd convex portion are by from the 1st end, the 2nd end of the circle main body It is protrusively provided in the circumferential, and then, it is equipped on by orthogonal two corner parts formed by sealing surface, is crimped on above-mentioned quilt Sealing surface realizes sealing function, except in addition to two orthogonal above-mentioned sealing opposed areas relative by sealing surface On non-relative region, wrong assembling is set to prevent from using mark.

In addition, overall be injection molded by thermoplastic resin composition, and above-mentioned assembling by mistake is prevented from being passed through with mark Above-mentioned injection moulding is integrally formed.

In addition, pruning portion side above-mentioned, the 1st convex portion breakage prevents from being dashed forward in the circumferential from above-mentioned 1st end with the 3rd convex portion Set with going out.

According to the sealing ring of the present invention, the sealing of the seam areas of the 1st convex portion and the 2nd convex portion can be improved, can be subtracted Small fluid leakage.By the injection moulding of thermoplastic resin composition, can easily it be sized, can easily, inexpensively Obtain high-quality, high performance sealing ring.Can omit the machining such as cutting, grinding, cut-out, the generation of spillage of material also compared with It is few, it can be manufactured inexpensively.Especially, using the teaching of the invention it is possible to provide be appropriate for the sealing ring of the compressor of eddying motion.

Assembling by mistake is prevented from being arranged at the sealing ring of non-relative region with mark according to the present invention, operator confirms to fill by mistake With preventing from using mark, relative to by orthogonal two corner parts formed by sealing surface, can with the posture of normal sealing ring, There is no mistake（Error）Ground is assembled.Also, assembling by mistake prevents from being not present in sealing opposed area with mark, completely not to sealing The functional plane of circle（Sealing property）Impact.

The sealing ring that portion side is protrusively provided from the 1st end is being pruned according to the 3rd convex portion, it is convex by the 3rd convex portion, the 1st Portion is protected, and always plays consistently sealing property.That is, with circle main body integrally compared with, the 1st convex portion is minimum, with other objects Collision or when earthward falling, due to its material, it may be said that by crack, the damaged possibility such as to lose higher, but The 1st minimum convex portion is protected by the 3rd convex portion of the present invention, above-mentioned breakage can be prevented.

Brief description of the drawings

Fig. 1 is the compressor sectional view for specifically illustrating the purposes for being related to the sealing ring of the present invention.

Fig. 2 represents the 1st embodiment of the present invention, is to represent the amplification view using position.

Fig. 3 is the top view of gap opening-wide state.

Fig. 4 is（Rear site portion is elliptically illustrated）The front view of gap opening-wide state.

Fig. 5 is the top view of gap closure state.

Fig. 6 is the front view of gap closure state.

Fig. 7 is the amplification view for representing to enclose the variation of main body 1.

Fig. 8 is Fig. 4 B-B amplification views.

Fig. 9 is Fig. 4 C-C amplification views and the amplification view for representing variation.

Figure 10 is Fig. 6 D-D amplification views and the amplification view for representing variation.

Figure 11 is the enlarged view of a portion for representing pressured state.

Figure 12 is the sectional view for representing the 2nd embodiment of the present invention.

Figure 13 is the top view of gap closure state.

Figure 14 is to want portion's amplification plan view.

Figure 15 is the top view of the gap closure state for the variation for representing the 2nd embodiment of the present invention.

Figure 16 is the sectional view for representing the 3rd embodiment of the present invention.

Figure 17 is the sectional view for representing the 4th embodiment of the present invention.

Figure 18 is the sectional view for representing the 5th embodiment of the present invention.

Figure 19 is the sectional view for representing the 6th embodiment of the present invention.

Figure 20 is the sectional view for representing the 6th embodiment and the 7th embodiment.

Figure 21 is to want portion's cross section explanatory diagram for illustrate various modifications example.

Figure 22 be represent another variation want portion's cross section explanatory diagram.

Figure 23 represents the 8th embodiment of the present invention, is to represent the amplification view using position.

Figure 24 is to represent respectively to want the amplification view in portion.

Figure 25 is the amplification view for respectively wanting portion for representing the 9th embodiment.

Figure 26 is the enlarged view of a portion for representing a variation.

Figure 27 is the enlarged view of a portion for representing other variations.

Figure 28 is the enlarged view of a portion for representing various other variations.

Figure 29 is the enlarged view of a portion for representing various other other variations.

Figure 30 is the enlarged view of a portion for representing pressured state.

Figure 31 is the enlarged view of a portion for representing pressured state.

Figure 32 represents the 10th embodiment of the present invention, is the amplification view of confined state.

Figure 33 is the top view for representing gap opening-wide state.

Figure 34 is（Rear site portion is elliptically illustrated）The front view of gap opening-wide state.

Figure 35 is the upward view of gap closure state.

Figure 36 is the enlarged view of a portion for representing various modifications example.

Figure 37 is the enlarged view of a portion for representing various modifications example.

Figure 38 is to illustrate assembling（Assembling）The amplification view of one of state.

Figure 39 is to illustrate assembling（Assembling）Other amplification view of state.

Figure 40 is the enlarged view of a portion for representing various modifications example.

Figure 41 is to illustrate assembling（Assembling）The amplification view of 11st embodiment of state.

Figure 42 is the enlarged view of a portion for further indicating that other various modifications example.

Figure 43 is the explanation figure for wanting portion for representing the 12nd embodiment, Figure 43（A）It is to want portion to amplify cross section explanatory diagram, Figure 43 （B）It is to want portion to amplify perspective illustration.

Figure 44 is the enlarged view of a portion of gap closure state and the enlarged view of a portion for representing variation.

Figure 45 is to represent to replace Figure 44 the 13rd embodiment with the amplification view of its variation.

Figure 46 is the enlarged view of a portion for representing pressured state.

Figure 47 is the sectional view for representing the 14th and the 15th embodiment of the present invention.

Figure 48 is the amplification view for representing various modifications example.

Figure 49 is and Figure 48（A）It is corresponding to want portion's amplification stereogram.

Embodiment

Hereinafter, based on the 1st embodiment and its variation shown in Fig. 1~Figure 11, the present invention is described in detail.

As shown in Figure 3 and Figure 4, sealing ring S of the invention in a free state, with having gap 5 at the one of circumference Circular global shape.Also, sealing ring S has circle main body 1, the 1st convex portion 21, the 2nd convex portion 22, foregoing circle main body 1 Occupy the angle more slightly smaller than 360 °, foregoing 1st convex portion 21, the 2nd convex portion 22 are by from the 1st end 11 and the 2nd end of circle main body 1 Portion 12 is protrusively provided in the circumferential.

Use state is represented in fig. 1 and 2, illustrates the scroll compressor mechanism 3 for the compressor 2 for being applied to idle call Situation.

Scroll compressor mechanism 3 it is main by fixed scroll 6 and can dynamic vortex 7 etc. constitute, foregoing fixed scroll 6 with housing 4 modes being close in the top of housing 4 are configured, it is foregoing can dynamic vortex 7 be engaged in fixed scroll 6.On housing 4, with it is movable The lower surface of vortex 7（The back side）Seal groove 4B is arranged with planar portions 4A relative 7A, this hair is incorporated with seal groove 4B Bright sealing ring S.

Sealing ring S be able to will be sealed between the back side 7A of dynamic vortex 7 and the planar portions 4A of housing 4（seal）, form back pressure empty Between.（In addition, Fig. 2 is the enlarged drawing in Fig. 1 Y portions.）

Also, as shown in Figure 3 and Figure 4, using thermoplastic resin composition, it is integrally formed out the entirety that gap 5 is opening-wide state Shape.In figure 3, arrow F represents the injection direction of molten resin during injection moulding, and reference 10 is inlet（Residual trace） Portion, that is, use（Omit diagram）Cutting edge is gallantly cut off as far as possible, it is also possible to which residual forms small teat, for finishing Work, the machining such as can also be ground.But, in addition to the residual trace portion 10 of such inlet, machinery can be omitted and added Work, sets injection moulding face.

As the suitable injection molding thermoplastic resin compositions of sealing ring S by the present invention, polyethersulfone resin can be lifted （PES resins）Exemplified by constituent.So-called flash is not likely to produce in injection-molded article, and then, have the following advantages, Coefficient of thermal expansion is relatively low, relatively low from the shrinkage after mould taking-up, and sealing ring S size is also maintained high accuracy, before can omitting The machining stated.

Also, as shown in figure 3, using thermoplastic resin compositions such as polyethersulfone resin constituents, gap 5 is integrally formed In the global shape of opening-wide state, but from injection mold take out, gap 5 in opening-wide state sealing ring S circle main body 1, The side opposite with gap 5 has radius of curvature R₁₃To be maximum sized（It is maximum sized）Position 13, also, be set to, from The maximum sized position 13 is respectively to the 1st end 11, the 2nd end 12, with circumferential M₁、M₂It is upper close, radius of curvature R₁、 R₂It is gradually reduced, the 1st end 11, the radius of curvature R of the 2nd end 12₁₁、R₁₂For minimum dimension, and then,（For less prominent chi Very little）1st convex portion 21, the radius of curvature of the outer peripheral face of the 2nd convex portion 22 and foregoing R₁₁、R₁₂It is identical.

In addition, foregoing radius of curvature R₁₃、R₁、R₂、R₁₁、R₁₂As shown in figure 3, being set to from central point O₁To outside circle main body 1 The size of side face.

And then, if additional explanation, in Fig. 3 top view, the circle main body 1 of opening-wide state is in relative to gap 5 The point of centre（Central point）P₅In the range of 180 ° ± 30 °, there is maximum sized position 13.That is, the θ shown in Fig. 3 is 30 °, Maximum sized position 13 is equipped in the range of 2 θ=60 °.（In addition, in figure 3, L₀It is to represent to include central point P₅It is straight The line in footpath.）

So, the shape of the chamber of mould, size and the sealing ring S being taken out（Reference picture 3）It is set to, its outer peripheral edge shape Shape is following non-the circular, ± θ in the opposite side of 180 ° relative to gap 5（=± 30 °）In the range of, arrange curvature Radius R₁₃For maximum sized position 13, it is gradually reduced from the position 13 towards the radius of curvature of gap 5.

In use state, i.e., it is assemblied in as illustrated in fig. 2 in seal groove 4B state, the 1st convex portion 21 and the 2nd convex portion 22 Overlap, be above-mentioned non-circular in gap closure state, but under the opening-wide state of gap, thus along with elastic deformation, In from central point O₁For same radius R₀Circular, the internal face 14 of the radial outside relative to seal groove 4B as shown in Figure 2 It is in close contact.From gap opening-wide state（Fig. 3）To gap closure state（Fig. 5）During deformation, deformed so that maximum sized The maximum curvature radius at position 13 reduces, and the 1st end 11, the side of the 2nd end 12 are hardly deformed.Therefore, it is as shown in Figure 5 foregoing Radius of curvature R₀With the radius of curvature R of the end 11,12 shown in Fig. 3₁₁、R₁₂It is equal.

As one, the shape of cross section of circle main body 1 is rectangle.In the present invention, " rectangle " is defined as, it is clear that including such as Fig. 2, Fig. 9（A）, Figure 10（A）Square, rectangle Deng shown in, and then, in addition to such as Fig. 7, Fig. 9（B）, Figure 10（B）It is shown that Sample is from generally rectangular G by a corner 15 with skewed straight line L₁₅Carry out the shape of chamfering, though also, omit diagram, including will be upper Part or all for stating remaining corner beyond a corner 15 carries out the polygon of smaller chamfering, also, also includes as schemed The shape with shallow slot shape notch 29 shown in 12~Figure 16 and Figure 18, in addition to such as Fig. 9（C）, Figure 10（B）Shown 4 At least one in corner has roundlet corner（Little ア ー Le portion）35 shape.

In the use state shown in Fig. 2, slided with the 1st sliding contact surface 26 and the 2nd sliding contact surface 27, the foregoing 1st Dynamic contact surface 26 with can dynamic vortex 7 back side 7A etc.（Drawer at movable side）Sealed plane P₁Sliding contact, foregoing 2nd sliding contact The face 27 and seal groove 4B grade of internal face 14（Affixed side）By sealing inner peripheral surface P₂Sliding contact.It is pushed into when being pressurized By the sealed plane P of orthogonal shape at section₁, by sealing inner peripheral surface P₂The corner part 8 of formation.

But, thus the present invention is had the following advantages using thermoplastic resin compositions such as polyethersulfone resin constituents, even if Cross section as shown in Fig. 2 etc. is set to square, rectangle（Omit chamfering）, the sealing ring in eddying motion does not occur yet A S corner 15 is embedded in the back side 7A and planar portions 4A medium rough sledding in gap 9.But, it is considered to pressure, temperature, motion speed The harsh situation of the use condition such as degree, operative orientation etc., the characteristic of fluid, also preferably forms the chamfering shown in Fig. 7 etc. sometimes Portion 16.Illustrate if being added to the shape of cross section for being formed with the chamfered section 16, as shown in fig. 7, from being represented by double dot dash line Generally rectangular G is by skewed straight line L₁₅One corner 15 is subjected to chamfering.（In the figure 7 exemplified with C chamferings.）

As shown in figure 8, the 1st convex portion 21 has the 1st contact piece portion 31, the and of the 2nd contact piece portion 32（Thin wall shape）Piece portion 30 is tilted, it is preceding State the 1st contact piece portion 31 have with（Shown in Fig. 7）The corner 19 of the adjacent generally rectangular G in one corner 15 side, the foregoing 2nd Contact piece portion 32 has the corner 17 of the opposing party, foregoing（Thin wall shape）Piece portion 30 is tilted by the 1st contact piece portion 31 and the 2nd contact piece Portion 32 links.

1st convex portion 21 is formed the (shape being bent at two positions（Bracket shape）Shape of cross section.Tilt piece portion 30 are formed with recess 33, and aforementioned recess 33 is in bracket shape（〔）Outside have and tilt corresponding surface 23, and there is bottom surface in inner side 25.Tilt the thickness T in piece portion 30₁Following size is set to, aforementioned dimensions are, while intensity and rigidity is able to ensure that, Appropriate flexibility is assigned, sufficient deflection is able to ensure that in a compressed state.

Such as Fig. 9（A）（C）Shown, the shape of cross section of the 2nd convex portion 22 is formed as triangle, in Fig. 9（A）In have right angle Sharp top, in Fig. 9（C）In be the triangle at top with roundlet corner 35.In addition, in Fig. 9（B）In, the 2nd convex portion 22 shape of cross section is formed as trapezoidal, with by Fig. 9（A）Chamfered section 16 after the top chamfer of shown triangle.

In Fig. 9（A）（B）（C）Each embodiment in, all on base（Bottom）With inclined plane 24.Also, such as Figure 10 （A）（B）Gap closure state that is shown, being overlapped with the 1st convex portion 21 and the 2nd convex portion 22, triangle or trapezoidal inclined plane 24（Parallel shape）Inclination corresponding surface 23 in face of tilting piece portion 30.In addition, trapezoidal cross sectional shape is not limited to as For the illustrated example Chamfered section 16 and inclined plane 24 are in the shape of parallel shape, are not also real parallel shapes including chamfered section 16 and inclined plane 24. In addition, Figure 10（A）With Fig. 9（A）Correspondence, Figure 10（B）With Fig. 9（B）Correspondence, and Figure 10（B）Double dot dash line shown in triangle Shape and Fig. 9（C）Correspondence.

More than, illustrated according to the other mode in addition to the mode except being illustrated based on Fig. 8, Fig. 9, Figure 10.It is above-mentioned The shape of cross section of circle main body 1 is rectangle, and cross section such as Figure 10 institutes of the rectangle of main body 1 will be enclosed in the 1st convex portion 21 and the 2nd convex portion 22 Show, with bis- points of cut-off rule Lc, by the 1st corresponding surface 41（Foregoing inclination corresponding surface 23）With the 2nd corresponding surface 42（Foregoing inclined plane 24）Mutually to correspond to.And then, the 1st convex portion 21 is formed with the portion of pruning in the opposite surface side of the 1st corresponding surface 41（Recess）33.

Also, as shown in Figure 5 and Figure 6, under the gap closure state that the 1st convex portion 21 and the 2nd convex portion 22 overlap, the The size of 1 convex portion 21 and the 2nd convex portion 22 not exceed from the generally rectangular G shown in Fig. 7（Dimensional tolerance）Set the He of the 1st convex portion 21 Each portion's size in cross section of 2nd convex portion 22.

Relative to the inclination corresponding surface 23 of the 1st convex portion 21 shown in Fig. 8（1st corresponding surface 41）Radial dimension H₂₃, axially Size T₂₃, by Fig. 9（A）（B）（C）The inclined plane 24 of the 2nd shown convex portion 22（2nd corresponding surface 42）Radial dimension H₂₄, axially Size T₂₄It is set to slightly smaller.So, with gap closure state, the 1st convex portion 21 and the 2nd convex portion 22 are configured to not from circle main body 1 Cross section the size that exceeds of contour line（Dimensional tolerance）.

I.e., as shown in Figure 10, overlapped with Fig. 7 generally rectangular G 4 sides the 1st convex portion 21 and the 2nd convex portion 22 are set to （Unanimously）In the case of,（1st convex portion 21）Tilt the He of corresponding surface 23（2nd convex portion 22）Form small between inclined plane 24 Seal clearance g.Seal clearance g full-size wishes to be set as below more than 10 μm, and 100 μm.That is, it is desirable to be 10 μm ≤g≤100μm.If seal clearance g exceeds 100 μm, fluid leakage is sharply increased.

So, with 4 sides with generally rectangular G overlapped in gap closure state and by the 1st convex portion 21 and the 2nd convex portion 22 Mode, make correspondence two sides 23,24（1st, the 2nd corresponding surface 41,42）Seal clearance g it is maximum in the state of, by maximal clearance More than 10 μm and less than 100 μm are dimensioned so as to, so can suppress from correspondence two sides 23,24（1st, the 2nd corresponding surface 41, 42）Leakage, and the 1st convex portion 21 and the 2nd convex portion 22 do not exceed from generally rectangular G, can also sealing property is further improved.

As shown in figure 11, in a compressed state, sealing ring S is pushed into by by sealing surface（Plane）P₁With by sealing surface （Curved surface）P₂The corner part 8 of formation, by fluid L pressure P₀, the 1st convex portion 21 occurs elastic deformation and is pushed to the 2nd convex portion 22。

Can dynamic vortex 7 carry out eddying motion, thus the 1st sliding contact surface 26 and the 2nd sliding contact surface 27 and object Part, That is sealed plane P₁, by sealing inner peripheral surface P₂Contact（Crimping）, by fluid L pressure P₀, the 1st convex portion 21 is pushed to the 2nd Convex portion 22.1st convex portion 21 pushes the 2nd convex portion 22, and thus the sealing between two parts of the 1st convex portion 21 and the 2nd convex portion 22 is improved, The leakage of fluid L from seal clearance g is reduced.It will also realize that from Figure 10, on the 1st convex portion 21 and the 2nd convex portion 22, by continuous Face is formed with the 1st sliding contact surface 26 and the 2nd sliding contact surface 27.In the present invention, the 1st sliding contact surface the 26 and the 2nd is slided Dynamic contact surface 27 can also be omitted（As already described）The injection moulding face of machining itself, moreover, will be according to JIS B The arithmetic average roughness on 0601 its surface determined（Ra）It is set as less than more than 0.1 2.0, it is played excellent sealing Energy and wear resistance.

In addition, as answering injection molding thermoplastic resin composition in the present invention, crooked elastic rate be 1500MPa with Upper, below 6000MPa, for example, it is preferable to be polysulfones resin composition, specially polyether sulfone（PES）It is resin combination, poly- Sulfone（PSU）Resin combination, polyphenyl sulphonyl (PPSU, polyphenylsulfon) resin combination.Especially, crooked elastic rate Desirably more than 2000MPa, below 4000MPa.

In addition, as the polyethersulfone resin constituent for the sealing ring for being relate suitable to the present invention, to add to polyethersulfone resin Add powdered graphite etc. that there is the polyethersulfone resin constituent of the compound and/or fluororesin powder of layered crystal structure etc..By In adding in this wise, easily characteristic is adjusted to the scope of the above-mentioned elasticity of flexure, it is resistance to as the excellent in wear resistance of sealing ring Heat, chemical resistance are also good, and with enough extensibilities, assembling and sealing are also good, are suitable for the air-conditioning illustrated in Fig. 1 With compressor etc..

In addition, as other thermoplastic resin compositions, poly arylidene thio-ester resin composition can also be applied, specifically, Poly-p-phenylene sulfide ether（PPS）Resin with the addition of above-mentioned powdered graphite etc. with the compound of layered crystal structure, fluororesin powder, And/or the polyphenylene sulfide resin composition of the fibrous charges such as glass fibre, carbon fiber.

In the present invention, it can be manufactured by the injection moulding of thermoplastic resin composition, so can be public by size Difference（By the rank of the chamber of mould）It is easily set at H₂₄≤H₂₃、T₂₄≤T₂₃。

Though omitting diagram, hypothesis is being set to H₂₄＞ H₂₃、T₂₄＞ T₂₃In the case of, in a state of use, sealing ring S It is pushed into by by sealing surface P₁With by sealing surface P₂The corner part 8 of formation, but now the 2nd convex portion 22 and two sides P₁ 、P₂Tightly Contiguity is touched, and the 1st convex portion 21 is only connected to certain one side, produces External leakage gap, occurs fluid leakage.In the present invention,（As before It is described,）It is set to H₂₄≤H₂₃、T₂₄≤T₂₃, the 1st convex portion 21 and the 2nd convex portion 22 are configured in the gap closure state overlapped Under do not exceed from generally rectangular G, to prevent such rough sledding.

Then, the 2nd embodiment of the invention shown in Figure 12~Figure 14 is illustrated.

As shown in figure 12, the shape of cross section of circle main body 1 is the rectangle represented by solid line in foregoing rectangle, the figure （Square）Situation, or have as double dot dash line by a generally rectangular G corner 15（By as shown in Figure 7 Skewed straight line L₁₅）The polygon of the chamfered section 16 of otch,（With drawer at movable side by sealing surface P under the use state shown in Fig. 2₁ Sliding contact）1st sliding contact surface 26 has frictional resistance reducing mechanism 28.

Main body 1 is enclosed as frictional resistance reducing mechanism 28, is formed with by the generally rectangular G otch of corner 19, with being sealed Face P₁Discontiguous shallow slot shape notch 29.Shallow slot shape notch 29 is formed on the 1st sliding contact surface 26, is thus flowed by sealing Oil immersion in body enters the 1st sliding contact surface 26 and by sealing surface P₁（Reference picture 2）Between, and by sealing surface P₁Slip（It is sliding OK）Property improve.So, shallow slot shape notch 29 is the notch of frictional resistance reduction.In Figure 12 cross-section, such as two point In the case that line has chamfered section 16 like that, the width dimensions W of the 1st sliding contact surface 26₁It is configured to the 2nd sliding contact The width dimensions W in face 27₂10%~50%, be more preferably set to 15%~30%.If the width of the 1st sliding contact surface 26 Spend size W₁Not enough lower limit, then have the possibility that sealing property declines, if more than higher limit, the cunning of the 1st sliding contact surface 26 Row is not enough, and slip during swing is unstable, changes the seam areas of the 1st convex portion 21 and the 2nd convex portion 22, makes fluid L leakage Amount increase.

As shown in Figure 13 and Figure 14, shallow slot shape notch 29 throughout circle main body 1 except the 1st end 11 and the 2nd end 12 The angle scope for being slightly less than 360 °, be continuously formed in the circumferential.At the 1st end 11 and the 2nd end 12, it is formed with Notch 29, thus the 1st convex portion 21 with by sealing surface P₁Do not contact, occur the bad feelings as described above for producing fluid leakage Condition, so leaving the 1st sliding contact surface 26 of the 1st convex portion 21.

Variation as shown in figure 15 like that, can also circle main body 1 except the 1st end 11 and the 2nd end 12 slightly Angle scope less than 360 °, multiple shallow slot shape notch 29 are intermittently formed in the circumferential.

In addition, in figure 16, leaving generally rectangular G corner 19, shallow slot shape notch 29 is disposed in the 1st sliding contact The width centre position in face 26.In addition, the 4th embodiment as shown in figure 17 is like that, can also be by the 1st sliding contact surface 26 with other positions with sealed body 1（2nd sliding contact surface 27）The material relatively low compared to coefficient of friction covers to be formed.Or Person, though omit diagram, but it is also possible to jog is set on the 1st sliding contact surface 26.So, the cunning of the 1st sliding contact surface 26 OK（Slide）Property improve.

Then, such as Figure 18（A）Like that, circle main body 1 can also will be diagonal for a corner 15 for shown the 5th embodiment Generally rectangular G other otch of corner 18 form notch 20.The notch 20 can also be referred to as cliff portion.Wishing should Notch 20 is formed as the recess with the 1st convex portion 21 shown in Fig. 8（Prune portion）33 identical shapes.Pass through the structure, mould Making become easy, cost can be reduced.In addition, notch 20（And the 1st convex portion 21 recess 33）In thermoplastic resin group Into thing injection moulding when be formed, so need not be machined, moreover, the circle master with the cross sectional shape shown in Fig. 7, Figure 12 Body 1 compares, and can save thermoplastic resin composition, fee of material is suppressed into relatively low.In Figure 18（A）In, by generally rectangular G's The otch of corner 19 is reduced to form the frictional resistance of the sliding contact surface 26 of shallow slot shape notch the 29, the 1st.

In addition, such as Figure 18（B）Shown variation is such,（From preventing caused by stress concentration from the point of view of crack） It also is intended to form less radius of curvature R at the corner part as the shallow slot shape notch 29 of frictional resistance reducing mechanism 28₂₉ Fillet part 29A.Or, can also be such as Figure 18（C）Other shown variations like that, are formed as shallow slot shape notch 29 Thin triangular incision portion.

Figure 19 and Figure 20（A）It is the sectional view for representing the 6th embodiment of the present invention.

In Figure 19, the generally rectangular G of circle main body 1 is rectangle, constitutes the side of the 1st sliding contact surface 26（Short side）Compare structure Into the side of the 2nd sliding contact surface 27（Long side）It is short.That is,（With drawer at movable side by sealing surface P in use state₁Sliding contact）The The frictional resistance of 1 sliding contact surface 26 is reduced, and sliding property is improved.By other of the diagonal generally rectangular G for a corner 15 The otch of corner 18 forms cliff portion（Notch）20.

In addition, such as Figure 20（A）Shown, the shape of cross section of the 2nd convex portion 22 is formed as triangle, and the 1st convex portion 21 has Piece portion 30 is tilted, it is foregoing to tilt the inclination that there is the inclined plane 24 with 1 side of the quadrangle of the 2nd convex portion 22 to be in parallel shape in piece portion 30 Corresponding surface 23.Piece portion 30 is tilted in outside with corresponding surface 23 is tilted, the notch 20 with circle main body 1 is formed with inner side in company Continue shape prunes portion 33.

In addition, Figure 20（B）The 7th embodiment is represented, such as the Figure 20（B）Like that, the 1st convex portion 21 has inclination pair in outside Face 23 is answered, and especially, sagittal curvature is formed with inner side prunes portion（Recess）33.And then, by the sagittal curvature The 1st contact piece portion 31, the 2nd contact piece portion 32 for pruning the convex portion 21 of portion the 33, the 1st are formed as wall thickness dimension and partly become big.But, In the Figure 20（B）In, it is desirable to be also,（Though omit diagram）The shape of cross section of main body 1 will be enclosed, as making（Rectangle and It is）Sagittal curvature shape prunes the shape that portion 33 is formed from generally rectangular G otch, will enclose the notch 20 of main body 1 and prune portion 33 are formed as sequential like.In Figure 20（A）In, the embodiment identical that can be obtained and have been described above is acted on, effect.

Then, the various modifications example shown in Figure 21 is illustrated.

In figure 21, according to（A）（B）（C）Order, the sectional area of the 1st convex portion 21 reduces.In other words, thickness gauge is represented Very little T₁According to（A）（B）（C）Order be set to less situation.For from intensity, according to（A）（B）（C）Order become It is weak, but the inclination corresponding surface 23 of the 1st convex portion 21 is pushed away easily with respect to the elastic deformation of inclined plane 24 of the 1st convex portion 21 when being pressurized Pressure.In practical, this two sides of pushing property judges from intensity and easily, it may be said that according to Figure 21's（A）（B）（C）Order and It is preferred that.In addition, in Figure 21（A）（B）In by single dotted broken line L₂₁Represent like that to be formed as bottom surface 25 with tilting the injustice of corresponding surface 23 Row shape is also free.

In addition, Figure 21（A）（B）（C）It is shown with standing shape have the 1st convex portion 21, the circle main body 1 of the 2nd convex portion 22 section Though face shape omits diagram, in Figure 21（A）In, circle main body 1 is set rectangular, or, it is arranged to have along bottom surface 25 and cuts Oral area（Cliff portion）20（Reference picture 18（A））Shape be also free.But, relative to Figure 21（B）（C）If being arranged to phase Same contour shape, the then cross section for enclosing main body 1 is too small, and posture when using is unstable, and it is advantageous to be set to rectangle.

Then, Figure 21（D）Illustrated by Figure 10, Figure 11, so omitting the description here.

In Figure 21（E）In, represent to be formed as the cross sectional shape of recess 33 into the situation of curve arc-shaped, it is also preferred that by recess 33 are formed as quadrant.It is easy relative to the pushing of inclined plane 24 from the intensity of above-mentioned 1st convex portion 21 and the 1st convex portion 21 Property（The flexibility of appropriateness）Two sides judgement, Figure 21（D）And（E）Compare Figure 21 in practical（A）（B）（C）It is preferred that.

Also, as with Figure 21（D）（E）Circle main body 1 cross sectional shape, be also free to selection rectangle or With the notch with the identical cross sectional shape of recess 33（Cliff portion）20（Reference picture 18（A））Shape.

But, in each embodiment and variation being had been described above based on Figure 18~Figure 21 etc., enclose the cross section of main body 1 It is shaped as（Rectangle but）Generally rectangular G other otch of corner 18 are formed to the shape of notch 20, moreover, for In the case of the shape of cross section that the portion of pruning 33 is formed with 1st convex portion 21, notch 20 and to prune portion 33 be sequential like from note It is preferred to penetrate the aspect of shaping and do not produce from the aspect of stress concentration.But, in the present invention, " sequential like " is not limited to The shape that portion 33 is pruned with notch 20 is identical, also including being used as the mutually similar continuous situation of shape.

Then, Figure 22 represents multiple other variations, Figure 22（A）（B）Represent the 1st convex portion 21 and the quilt of the 2nd convex portion 22（No Linear cut-off rule Lc as the Figure 20 and Figure 21 having been described above but）Bis- points of the cut-off rule Lc of L fonts situation.That is, The notch 16A of rectangle or square is formed at a corner by the shape of cross section of the 1st convex portion 21, and the 2nd convex portion 22 is as embedding The shape of cross section of rectangle or square together in notch 16A, the cross section of the 1st, the 2nd corresponding surface 41,42 is L words Shape.In addition, in Figure 22（A）In, the portion 33 of pruning of the 1st convex portion 21 is L-shaped, in Figure 22（B）In, this, which prunes portion 33, is（By reality What line was represented）5 side shapes, or, it is " rectangle represented by single dotted broken line " etc..Though in addition, omitting diagram, consideration corresponds to Figure 22（A）Or（B）Circle main body 1 shape of cross section be rectangle situation and with the portion of pruning 33 is same or similar cuts The situation of the shape of oral area 20.

In addition, in Figure 22（C）（D）In shown variation, represent the 1st convex portion 21 and the 2nd convex portion 22 by quadrant Arc-shaped bis- points of cut-off rule Lc situation.That is, the shape of cross section of the 1st convex portion 21 has a quarter round shape in a corner Notch 16B, the 2nd convex portion 22 is a quarter round shape for being embedded in notch 16B.In addition, in Figure 22（C）In, the 1st convex portion 21 portion 33 of pruning is the short straight line portion 37,37 by the larger arc sections 36 of the radius of the cut-off rule Lc along arc-shaped and its two ends The brilliant of composition.In Figure 22（D）In, illustration prunes the situation that portion 33 is triangle.

Though in addition, omitting diagram, exist and Figure 22（C）（D）The shape of cross section of corresponding circle main body 1 sets rectangular Situation and be arranged to have a case that and prune the shape of the same or similar notch 20 in portion 33.

Also, in Figure 22（A）（B）（C）（D）Each variation in, the 1st corresponding surface 41 and the 2nd corresponding surface 42 all phases Mutually parallel, therefore, its gap g describes L-shaped or a quarter round shape with the state of certain small size.

To the application method of the sealing ring of the invention described above（Effect）Illustrate.

As shown in figure 11, sealing ring S in a compressed state, be pushed to can dynamic vortex 7 and housing 4 corner part 8, the 2nd is convex Portion 22 is corresponding with portion in the corner part 8.Sealing ring S is, the 1st sliding contact surface 26 and eddying motion can dynamic vortex 7 can Dynamic side is by sealing surface P₁Sliding contact（Crimping）, the affixed side of the 2nd sliding contact surface 27 and housing 4 is by sealing surface P₂Slip connects Touch（Crimping）.1st convex portion 21 is, by fluid L pressure P₀, tilt the inclined plane that piece portion 30 is pushed into the 2nd convex portion 22 24, the sealing between two parts of the 1st convex portion 21 and the 2nd convex portion 22 is improved.So, from the 1st convex portion 21 and the 2nd convex portion 22 Seam areas fluid leakage reduce.In addition, the use position of the sealing ring S in compressor, and do not allow fluid non-fully Leakage, for the sealing ring S of the present invention, it is desirable to the sealing with existing polytetrafluoroethylene (PTFE) sealing ring same degree.That is, it is close Seal S is not preferably（Compared with polytetrafluoroethylene (PTFE) sealing ring）Fluid leakage is excessive, is not also preferably that fluid leakage is too small. Therefore, sealing ring S of the invention is such as Figure 21（A）~（E）Detailed description, by the thickness T of the 1st convex portion 21₁And shape Shape carries out setting change, the deflection thus, it is possible to adjust the 1st convex portion 21 during compression（Deform easiness）.

As shown in Figure 12 and Figure 16~Figure 18, shallow slot shape notch 29 is set, made with drawer at movable side by sealing surface P₁Slip connects The frictional resistance of the 1st tactile sliding contact surface 26 diminishes（Reduce）, thus can dynamic vortex 7 and housing 4 corner part 8, sealing Circle S is retained stable posture, can dynamic vortex 7 by sealing surface P₁With sliding for the 1st sliding contact surface 26（Slide）Surely It is fixed, the variation of the seam areas of the 1st convex portion 21 and the 2nd convex portion 22 can be suppressed.

In addition, also it is stated that the present invention can be designed change in Figure 20 and Figure 21, the 1st convex portion 21 is can Be deformed into the side of the 2nd convex portion 22 protrude cross sectional shape, tilt corresponding surface 23 and bottom surface 25 it is not parallel can also, and then, Bottom surface 25 can also bend to arc-shaped.

More than, the explanation such as carried out based on Fig. 1~Figure 22, sealing ring of the invention is formed as having seam at the one of circumference The circular global shape of gap 5, with circle main body 1 and the 1st convex portion 21, the 2nd convex portion 22, foregoing 1st convex portion 21, the 2nd convex portion 22 are protrusively provided in the circumferential from the 1st end 11, the 2nd end 12 of the circle main body 1, are configured to, by thermoplastic resin Constituent, is integrally formed entirety, the shape of cross section of above-mentioned circle main body 1 is rectangle, above-mentioned 1st convex portion 21 and the 2nd convex portion 22 By the cross section of the rectangle of above-mentioned circle main body 1 by bis- points of cut-off rule Lc, by the 1st corresponding surface 41, the 2nd corresponding surface 42 mutually Face, and then, above-mentioned 1st convex portion 21 is to be formed with the cross section shape in the portion of pruning 33 in the opposite surface side of above-mentioned 1st corresponding surface 41 Shape, is set to, under the gap closure state that above-mentioned 1st convex portion 21 and above-mentioned 2nd convex portion 22 overlap, above-mentioned 1st convex portion 21 and the size that exceeds of contour line of above-mentioned 2nd convex portion 22 not from the cross section of above-mentioned circle main body 1, so it is convex to improve the 1st Sealing at the seam areas of the convex portion 22 of portion 21 and the 2nd, can reduce fluid leakage.Pass through the note of thermoplastic resin composition Shaping is penetrated, tolerance can be easily sized, high-quality, high performance sealing ring can easily, be inexpensively obtained.It can save Slightly the machining such as cutting, grinding, cut-out, spillage of material also less generation, can be manufactured inexpensively.

In addition, sealing ring is formed as the circular global shape at the one of circumference with gap 5, with circle main body 1 With the 1st convex portion 21, the 2nd convex portion 22, foregoing 1st convex portion 21, the 2nd convex portion 22 are from the 1st end 11, the 2nd end 12 of the circle main body 1 Prominent setting, is configured to, by thermoplastic resin composition, entirety, the horizontal stroke of above-mentioned circle main body 1 is integrally formed in the circumferential Cross sectional shape is, will be with drawer at movable side by sealing surface P₁With affixed side by sealing surface P₂Corner part 8 it is corresponding, on basic square A shape G corner 15 is diagonal above-mentioned generally rectangular G other otch of corner 18, forms notch 20, above-mentioned 1st convex portion 21 With the 2nd convex portion 22 by the cross section of the above-mentioned circle main body 1 of the shape of cross section with above-mentioned notch 20 by cut-off rule Lc bis- Point, faced each other by the 1st corresponding surface 41, the 2nd corresponding surface 42, above-mentioned 1st convex portion 21 is to be formed with and above-mentioned circle main body 1 Above-mentioned notch 20 be in sequential like the shape of cross section for pruning portion 33, be set to, in above-mentioned 1st convex portion 21 and the above-mentioned 2nd Under the gap closure state that convex portion 22 overlaps, above-mentioned 1st convex portion 21 and above-mentioned 2nd convex portion 22 be not from above-mentioned generally rectangular G The size exceeded, so can improve the sealing of the seam areas of the 1st convex portion 21 and the 2nd convex portion 22, can reduce fluid and let out Leakage.By the injection moulding of thermoplastic resin composition, tolerance can be easily sized, can easily, inexpensively be obtained High-quality, high performance sealing ring.The machining such as cutting, grinding, cut-out can be omitted, the generation of spillage of material also tails off, It can be manufactured inexpensively.Stable posture during slip, can suppress the variation of the seam areas of the 1st convex portion 21 and the 2nd convex portion 22, It can prevent fluid leakage from becoming too much.Thermoplastic resin composition can be saved, fee of material is suppressed into relatively low.And then, the longevity Life is also elongated.

In addition, above-mentioned circle main body 1 and drawer at movable side are by sealing surface P₁1st sliding contact surface 26 of sliding contact possesses friction The shallow slot shape notch 29 of resistance reduction, so stable posture when sliding, can suppress the 1st convex portion 21 and the 2nd convex portion 22 Seam areas variation, can prevent fluid leakage it is excessive.And then, there is life-span also longer sharp point.

In addition, above-mentioned circle main body 1 and drawer at movable side are by sealing surface P₁1st sliding contact surface 26 of sliding contact is by friction system The low material of number covers to be formed, and is configured to reducing friction resistance, so stable posture when sliding, can suppress the 1st convex portion 21 With the variation of the seam areas of the 2nd convex portion 22, it can prevent that fluid leakage is excessive.And then, there is life-span also longer sharp point.

Central point P of the above-mentioned circle main body 1 relative to above-mentioned gap 5 of above-mentioned opening-wide state₅In 180 ° ± 30 ° of scope Inside there is radius of curvature R₁₃For maximum sized position 13, it is set to, from the maximum sized position 13 respectively to above-mentioned 1st end Portion 11, the 2nd end 12, with circumferential M₁、M₂It is upper close, radius of curvature R₁、R₂Reduce, it is convex in above-mentioned 1st convex portion 21 and the 2nd Under the gap closure state that portion 22 overlaps, global shape is in circular, so being in open wide for the easy gap 5 of Mold Making State, and be in circular under the use state that the 1st convex portion 21 and the 2nd convex portion 22 are overlapped, played relative to circular inner periphery face Excellent sealing property（Sealing）.

Then, Figure 23 and Figure 24 represent the 8th embodiment of the present invention.Figure 23 is that instead of the accompanying drawing of earlier figures 2, Tu24Shi The accompanying drawing being generally corresponding to earlier figures 8, Fig. 9, Figure 10 etc..

In Fig. 1 and Fig. 2, Fig. 3~Fig. 6, the embodiment shown in structure, effect and Figure 23, Figure 24 having been described above Situation is identical, so omitting repeat specification, below, mainly different structures, effect etc. are illustrated.

Such as Figure 23, Figure 24（A）Shown, the shape of cross section of circle main body 1 is circular.Also, in the use shape shown in Figure 23 Under state, with can dynamic vortex 7 back side 7A etc.（Drawer at movable side）By sealing surface P₁1st sliding contact portion of sliding contact 26A and seal groove 4B internal face 14 etc.（Affixed side）By sealing surface P₂2nd sliding contact portion 27A of sliding contact.By Be pushed into during pressure by the orthogonal thereto shape of cross-section by sealing surface P₁ 、P₂At the corner part 8 of formation.Above-mentioned 1st, the 2nd slides Dynamic contact site 26A, 27A are as overall in linearly with each by sealing surface P₁、P₂Contact, but in the case that pressure is higher or In the case of producing abrasion, contacted with thinner banding.

But, the present invention is using thermoplastic resin compositions such as polyethersulfone resin constituents, and is arranged to circular cross-section, by This has the advantages that not produce a problem that sealing ring S is embedded in back side 7A and planar portions 4A gap 9 in eddying motion.

Also, as shown in figure 24, the circular cross section such as the figure of main body 1 will be enclosed in the 1st convex portion 21 and the 2nd convex portion 22（B） It is shown, by bis- points of cut-off rule Lc, faced each other by the 1st corresponding surface 41, the 2nd corresponding surface 42.Specifically, by the 2nd convex portion 22 shape of cross section is set to, with by from circular central point O₂₀Play orthogonal two axle that angle β is 90 °（X-axis, y-axis） The circular arc chord that 2: 38,39 intersected with circular wheel profile G ' link surrounds the arch to be formed.

On the other hand, such as Figure 24（B）It is shown, set the shape of the cross section of the 1st convex portion 21 so that form small sealing Gap g.That is, it is arranged to, can be with the 1st convex portion 21 and the 2nd convex portion 22 not from Figure 24（A）The cross section of shown circle main body 1 The mode that circular wheel profile G ' exceeds, make the 1st convex portion 21, the 2nd convex portion 22 each arc sections abut circular wheel profile G ' size （Shape）, and now, small seal clearance g is formed between the 1st, the 2nd corresponding surface 41,42.

In Figure 24（B）In, the situation that cut-off rule Lc is 45 ° of inclined straight lines is represented, and, angle β is 90 °, thus In Figure 30（A）Under shown use state, the 2nd convex portion 22 is relative to by sealing surface P₁、P₂Crimped with firm position after dismount（Slip connects Touch）.Moreover, conduct（It is thin）Elastic deformation nearby easily occurs for the 2nd convex portion 22 of arch, the point 38,39 at two ends, with circular arc face Will be by sealing surface P₁、P₂Crimping（Sliding contact）.Moreover, seal clearance g two ends are closed, so sealing is also maintained.

In addition, such as Figure 24（D）It is shown, in the 1st convex portion 21, equivalent to the string of the cross section arch of the 1st corresponding surface 41 The central angle β of 1st corresponding surface 41₄₁More than 90 °.

In fig. 24, if additional explanation, so that the horizontal stroke of the arc sections and circle main body 1 of the 1st convex portion 21 and the 2nd convex portion 22 In the case that the mode of the contour line G ' coincidences of section circle is consistent, between the 1st straight corresponding surface 41 and the 2nd corresponding surface 42, Form small seal clearance g.Seal clearance g wishes to be set to 10 μm≤g≤100 μm.If seal clearance g is more than 100 μm, Then fluid leakage is sharply increased.In such manner, it is possible to suppress the fluid leakage from the 1st, the 2nd corresponding surface 41,42, and the 1st convex portion 21 With the 2nd convex portion 22 not from（Basic）Circular contour line G ' exceeds, and sealing property also can be improved further.

Then, Figure 25 represents the 9th embodiment of the present invention.If with the 8th foregoing embodiment（Figure 24）Compare, then It is circular that 2 convex portions 22 become a quarter from arch.

And then, if specifically describing, the 1st convex portion 21 and the 2nd convex portion 22 will enclose the circular cross section of main body 1（Contour line G ´）Such as figure（B）It is shown, with bis- points of the cut-off rule Lc of L-shaped, faced by the 1st corresponding surface 41, the 2nd corresponding surface 42.

Such as Figure 25（B）Shown, the 2nd convex portion 22 has from circular central point O₂₀Rise orthogonal for 90 ° along angle β Two axles（X-axis, y-axis）The 2nd corresponding surface 42, it is corresponding with 90 ° of angle β with arc sections.

On the other hand, such as Figure 25（B）（C）It is shown, in the way of forming small seal clearance g, from circular wheel profile G ' The otch 40 more slightly larger than the 2nd convex portion 22 is formed, the shape of cross section of the 1st convex portion 21 is set.The angle β of the otch 40₄₀It is 90°。

In the case of such shape, size, in Figure 30（B）Under shown use state, the 2nd convex portion 22 is in corner part 8 with firm position after dismount and by sealing surface P₁、P₂Crimping（Sliding contact）.Especially, seal clearance g（In cross-section）By sealing surface P₁、P₂Closing, so sealing is maintained.

Also, above-mentioned seal clearance g is preferably set to the embodiment identical number range with above-mentioned Figure 24.

Then, the ratio of the sectional area of the 2nd convex portion 22 like that, can also be compared Figure 24 by variation as shown in figure 26（B） Situation the earth set.That is, if by each center with circular cross section of the point 38,39 at the two ends of the string of the 2nd convex portion 22 Point O₂₀Angle formed by two straight lines linked is set to β₄₂, then ＜ β in 90 ° are set₄₂≤ 150°。

Such as Figure 30（A）It is shown, relative to orthogonal by sealing surface P₁、P₂In the state of crimping, produced at sealing ring S In the case of distortion, the leakage via gap g fluid is less.

Then, in Figure 27 variation, with Figure 25（B）Situation compare, the ratio of the sectional area of the 2nd convex portion 22 compared with Greatly.So, with Figure 30（B）Under identical use state, distortion is produced at sealing ring S, via gap g fluid Leakage is also less.

In Figure 28, multiple variations of the present invention are represented.2nd convex portion 22 and Figure 24 or Figure 26（A）It is identical, but the 1st is convex Portion 21 and the difference having been described above.That is, in Figure 28（A）~（D）Each in, the 1st convex portion 21 is all in the 1st corresponding surface 41 Opposite surface side（Circular arc surface side）It is formed with the shape of cross section in the portion of pruning 33.

In Figure 28（A）In, it is larger arch to prune portion 33, and the 1st convex portion 21 is by the 1st corresponding surface 41 and with parallel The inclination piece portion 30 of bottom surface sections 25 of angled straight lines shape constitute.Alternatively, it is also possible to be, by the back side represented by single dotted broken line Portion 25A, the wall thickness for tilting piece portion 30 is formed as gradually decreasing with to one party.That is, single dotted broken line represent back part 25A with Not parallel 1st corresponding surface 41 is also free.

In Figure 28（B）In, the cross sectional shape for pruning portion 33 is roof type, and the 1st convex portion 21 is that have nail portion 43,43 at two ends U-shaped nail（カスガイ）Shape.In other words, the shape of the 1st convex portion 21 is by inclination piece portion 30 and is continuously arranged at its two ends Nail portion 43,43 constitute.

Then, in Figure 28（C）In, the cross sectional shape for pruning portion 33 is rugby shape, and the 1st convex portion 21 has straight line in outside The 1st skewed corresponding surface 41, and in inner side（Rear side）With sagittal curvature recess.

In Figure 28（B）（C）In, it may be said that the 1st its both ends of convex portion 21 are formed with the rib of heavy wall.Then, in Figure 28 （D）In, the shape of cross section of the 1st convex portion 21 is sickleshaped.That is, by the linear back part parallel with the 1st corresponding surface 41 25B, the line part 25C relative to linear back part 25B bendings shape substantially at right angles, the 1st convex portion 21 is formed as by shank 44 and blade 45 constitute above-mentioned sickleshaped.Also, portion 33 is pruned to constitute by by linear back part 25B and line part 25C Broken line incision formed.

Then, in Figure 29, multiple other variations are also shown that it has.2nd convex portion 22 is and Figure 25 or Figure 27 identicals Shape of cross section, but the 1st convex portion 21 is different from the variation having been described above.That is, such as Figure 29（A）~（D）It is shown, the 1st convex portion 21 It is in the opposite surface side of the 1st corresponding surface 41（Circular arc surface side）It is formed with the shape of cross section in the portion of pruning 33.

Such as Figure 29（A）It is shown, the otch of portion 33 of pruning of arch is formed by skewed line part 46.In addition, in Figure 29 （B）In, by a zigzag（It is step-like）Folding line 47 will prune the otch of portion 33 and be formed.In addition, in Figure 29（C）In, by circle Camber line 48 will prune the otch of portion 33 and be formed.In Figure 29（D）In, it will be pruned by the waveform line with two circular arc lines 49,49 The otch of portion 33 is formed.

Therefore, the shape of cross section of the 1st convex portion 21 is in Figure 29（A）In be that two scallops 50,50 are connected into junction configurations, Figure 29（B）In in a zigzag, in Figure 29（C）（D）In for two two ginkgo leaves are connected into junction configuration.

In Figure 28, Figure 29 variation of each,（It is identical with Figure 24~Figure 27 situation,）Make the 1st convex portion 21 Arc sections 51, the arc sections 52 of the 2nd convex portion 22 overlap with circular wheel profile G '（Unanimously）In the case of, in the 1st convex portion 21 Small seal clearance g is formed between 1st corresponding surface 41 and the 2nd corresponding surface 42 of the 2nd convex portion 22.Seal clearance g maximum chi It is very little to wish to be set as below more than 10 μm, and 100 μm.

So, make respectively in cross-section in gap closure state, and the 1st convex portion 21 and the 2nd convex portion 22 as sealing ring S In the state of individual arc sections 51,52 are overlapped with circular wheel profile G ', seal clearance g is full-size, and the full-size is set as More than 10 μm and less than 100 μm, suppress so the fluid from the 1st, the 2nd corresponding surface 41,42 can be leaked, and the 1st convex portion 21 and the 2nd convex portion 22 does not exceed from contour line G ', so sealing property is further improved.

As shown in Figure 30 and Figure 31, in a compressed state, sealing ring S is pushed into by by sealing surface P₁With by sealing surface P₂ The corner part 8 of formation, by fluid L pressure P₀, the 1st convex portion 21 is pushed to the 2nd convex portion 22.

Can the progress eddying motion of dynamic vortex 7（Reference picture 1）, thus the 1st corresponding surface 41 and the 2nd corresponding surface 42 are close to object portion Part, i.e., by sealing surface P₁, by sealing surface P₂, by fluid L pressure P₀, the 1st convex portion 21 is pushed to the 2nd convex portion 22.1st convex portion 21 push the 2nd convex portion 22, and thus the sealing between two parts of the 1st convex portion 21 and the 2nd convex portion 22 is improved, from seal clearance G fluid L leakage is reduced.Also, arc sections 51 of the convex portion 21 of arc sections 52 and the 1st of the 2nd convex portion 22 etc. also can be province The injection moulding face being slightly machined in itself, moreover, by the arithmetic average roughness according to its surface determined of JIS B 0601 （Ra）It is set as less than more than 0.1 2.0, makes the excellent sealing property of its performance and wear resistance.

In addition, in the present invention, as should injection molding thermoplastic resin composition, be rectangle with cross section （Fig. 2~Figure 22）It is identical, so omitting repeat specification.

Application method and effect to above-mentioned sealing ring S are illustrated.As shown in Figure 30, Figure 31, sealing ring S is in compression shape Being pushed under state can the configuration corresponding with the inboard position of the corner part 8 of the convex portion 22 of corner part the 8, the 2nd of dynamic vortex 7 and housing 4. The arc sections 52 of 2nd convex portion 22 illustrate there is more than 90 ° as angle β, so its circular arc such as in Figure 24, Figure 25 Portion 52 relative to can dynamic vortex 7 drawer at movable side by sealing surface P₁And affixed side is by sealing surface P₂Simultaneously sliding contact（Pressure Connect）.Thus, practical sealing is carried out.Moreover, arc sections 52 with by sealing surface P₁ 、P₂Crimping, contact face pressure is also higher, describes Contact face pressure distribution with peak value, so sealing is also excellent.

In addition, at the 1st convex portion 21, also such as Figure 30（A）（B）And Figure 31（B）Illustrate, also there is the 1st pair of its arc sections 51 Answer surface side end 51A relative to drawer at movable side by sealing surface P₁, affixed side is by sealing surface P₂The situation of crimping, can enter one simultaneously Step improves sealing.Bear fluid L pressure P in 1st convex portion 21₀, to the inboard elasticity change of the side of the 2nd convex portion 22 and corner part 8 Shape, so relative to two by sealing surface P₁ 、P₂The possibility of crimping is uprised, and the mutual gap g of the 1st, the 2nd corresponding surface 41,42 Size also reduce, fluid leakage reduce.

In addition, the sealing ring S of use position to(for) compressor, is not allow fluid to leak completely, for this hair Bright sealing ring S, it is desirable to the sealing with existing polytetrafluoroethylene (PTFE) sealing ring same degree.That is, sealing ring S（With poly- four PVF sealing ring compares,）It is not preferably that fluid leakage is excessive, but is not preferably that fluid leakage is too small yet.Therefore, it is of the invention Sealing ring S in Figure 24~Figure 29, such as various explanations can be to the shape of the 1st convex portion 21, size progress various changes, institute , can be by the deflection of the 1st convex portion 21 when being pressurized so to change shape, size（Deform easiness）Regulation.

It is such as lower seal based on the sealing ring for being related to the present invention that Figure 23~Figure 31 is described in detail, is formed as in circumference There is the circular global shape in gap 5, with circle main body 1, the 1st convex portion 21, the 2nd convex portion 22, foregoing 1st convex portion at one 21st, the 2nd convex portion 22 is protrusively provided in the circumferential from the 1st end 11, the 2nd end 12 of the circle main body 1, is configured to, by heat Entirety is integrally formed in plastic resin constituent, and the shape of cross section of above-mentioned circle main body 1 is circular, above-mentioned 1st convex portion 21 and the 2nd Convex portion 22 by cut-off rule Lc by two points of the circular cross section of above-mentioned circle main body 1, by the 1st corresponding surface 41, the 2nd corresponding surface 42 To face each other, it is set to, it is above-mentioned under the gap closure state that above-mentioned 1st convex portion 21 and above-mentioned 2nd convex portion 22 overlap The size that the contour line G ' of 1st convex portion 21 and above-mentioned 2nd convex portion 22 not from the cross section of above-mentioned circle main body 1 exceeds, so can Improve the sealing of the seam areas of the 1st convex portion 21 and the 2nd convex portion 22, fluid can be leaked and reduced.Pass through thermoplastic resin The injection moulding of constituent, can easily, inexpensively obtain high-quality, high performance sealing ring.Can omit cutting, grinding, The machining such as cut-out, the generation of spillage of material is also less, can be manufactured inexpensively.Especially, shape of cross section is circle, by This is relative to by sealing surface P₁、P₂Easily coordinate, and mountain type of the contact face pressure distribution display with peak value, it is higher as sealing High performance sealing ring.

In addition, sealing ring is formed as the circular global shape at the one of circumference with gap 5, with circle main body 1, 1st convex portion 21, the 2nd convex portion 22, foregoing 1st convex portion 21, the 2nd convex portion 22 exist from the 1st end 11, the 2nd end 12 of the circle main body 1 It is protrusively provided, is configured in circumference, entirety, the cross section of above-mentioned circle main body 1 is integrally formed by thermoplastic resin composition Shape is circular, and above-mentioned 1st convex portion 21 and the 2nd convex portion 22 are by cut-off rule Lc by the circular cross section two of above-mentioned circle main body 1 Point, faced each other by the 1st corresponding surface 41, the 2nd corresponding surface 42, and then, above-mentioned 1st convex portion 21 is in above-mentioned 1st corresponding surface 41 opposite surface side is formed with the shape of cross section in the portion of pruning 33, is set to, in above-mentioned 1st convex portion 21 and above-mentioned 2nd convex portion 22 Under the gap closure state overlapped, above-mentioned 1st convex portion 21 and above-mentioned 2nd convex portion 22 be not from the cross section of above-mentioned circle main body 1 The sizes that exceed of contour line G ', so the 1st convex portion 21 is in a compressed state, easily pushes and be deformed into by orthogonal by sealing surface P₁、P₂The corner part 8 of formation, sealing is further improved.And then, can by the injection moulding of thermoplastic resin composition Easily, high-quality, high performance sealing ring are inexpensively obtained.The machining such as cutting, grinding, cut-out can be omitted, material is damaged The generation of consumption is also less, can be manufactured inexpensively.Especially, shape of cross section is circle, thus relative to by sealing surface P₁、P₂ Easily coordinate, and contact face pressure distribution table shows the mountain type with peak value, as the higher high performance sealing ring of sealing.

In addition, the cross section of circle main body 1 is circle, it is configured to, the above-mentioned circle main body 1 of above-mentioned opening-wide state is also relative to upper State the central point P in gap 5₅, there is radius of curvature R in the range of 180 ° ± 30 °₁₃For maximum sized position 13, it is set to, Above-mentioned 1st end 11, the 2nd end 12 are respectively facing from the maximum sized position 13, with circumferential M₁、M₂It is upper close, curvature Radius R₁、R₂Reduce, global shape is in positive round under the gap closure state that above-mentioned 1st convex portion 21 and the 2nd convex portion 22 overlap Shape, so be in opening-wide state for the easy gap 5 of Mold Making, and the use shape overlapped in the 1st convex portion 21 and the 2nd convex portion 22 Under state, in circular, relative to circular inner periphery face（By sealing surface P₂）Play excellent sealing property（Sealing）.

Then, Figure 32~Figure 42 be represent the present invention the 10th, the figure of the 11st embodiment and each variation.

As shown in Figure 32~Figure 35 and Figure 37, Figure 38, Figure 39 etc., the cross section of circle main body 1 is rectangle, before no State（Shown in Figure 19 etc.）Notch（Cliff portion）20 cross section, and the circle main body 1 is equipped on by orthogonal in cross section Drawer at movable side by sealing surface P₁With affixed side by sealing surface P₂The corner part 8 of formation, be crimped on two it is above-mentioned by sealing surface P₁、P₂ And realize sealing function, it is identical with the embodiment having been described above in the above, but different aspects is, except with Orthogonal two are above-mentioned by sealing surface P₁、P₂Relative sealing opposed area X（Reference picture 38, Figure 39）Non- relative area in addition Domain Z, prevents from using mark U provided with assembling by mistake.

Above-mentioned sealing is suitable with Figure 39 the 1st sliding contact surface 26 and the 2nd sliding contact surface 27 with opposed area X.

If circle main body 1 is the cross section of rectangle, beyond foregoing 1st sliding contact surface 26 and the 2nd sliding contact surface 27 Both sides are non-relative region Z, and mark U is arranged in non-relative region Z.In Figure 33, Figure 34, Tu35Zhong, with the 1st sliding contact On the face 56 of the parallel opposite side in face 26, predetermined distance is separated in the circumferential has bottom outlet 57 to set mark U by circular.

In the embodiment shown in Figure 33 and Figure 34, by thermoplastic resin composition by sealing ring S integrated injection When penetrating shaping, while being integrally formed as assembling by mistake prevents there is bottom outlet 57 with mark U.

In Figure 37（B）（C）In shown embodiment, by the inner peripheral surface 58 and lower surface parallel with the 2nd sliding contact surface 27 Entirety of the dolly dimple portion 59 of 56 otch of corner 18 throughout sealing ring S（Identically with Figure 35）Arranged with predetermined distance.It is small recessed Portion 59 is fallen into Figure 37（B）In be cubic, in Figure 37（C）In be that a quarter is cylindric or a quarter is spherical.In addition, In embodiment shown in Figure 39, it is also provided with and Figure 37（C）Identical dolly dimple portion 59, constitutes mark U.

Then, the shape of cross section of the 1st convex portion 21 and the 2nd convex portion 22 is to incite somebody to action such as shown in figure 36（Cross section is square Shape）Generally rectangular bis- points of use cut-off rule Lc, is mutually corresponded to by corresponding surface 23 and inclined plane 24 is tilted.2nd convex portion 22 has There is the continuous corner 15A in a corner 15 with foregoing circle main body 1, in Figure 36（A）（B）（C）Each in, the 2nd convex portion 22 Sectional area than the 1st convex portion 21 is small, as shown in figure 38 as the triangle on summit using the above-mentioned corner 15A of the 2nd convex portion 22, with Corner part correspondence in corner part 8, makes gap 9 in closed to play sealing.Figure 36（A）（B）（C）It is convex that the 2nd is illustrated respectively The section in portion 22 is triangle, small rectangle, the situation of a quarter circle.In addition, as shown in figure 35, in the 1st convex portion 21 and the 2nd In the gap closure state that convex portion 22 overlaps, as shown in figure 36, the cross section of the 1st convex portion 21 of setting and the 2nd convex portion 22 is each Portion's size so that as the 1st convex portion 21 and the 2nd convex portion 22 not from generally rectangular G（Reference picture 37）The size exceeded（Size is public Difference）.

Then, in Figure 40, the cross sectional shape of the 2nd convex portion 22 is triangle, and on the other hand, the 1st convex portion 21 is in inclination pair The opposite side in face 23 is answered to be formed with the portion of pruning（Recess）33.In Figure 40（A）And Figure 40（B）（Solid line）In, the section of the 1st convex portion 21 Shape is that the parallax parallel with tilting corresponding surface 23 is set into the trapezoidal of bottom surface sections 25, in addition, thickness T₁It can change Size is designed.And then, such as in Figure 40（B）Represented with single dotted broken line, can also will constitute the parallax of the bottom surface of the 1st convex portion 21 It is in non-parallel shape that 25D, which is arranged to and tilts corresponding surface 23,.

Then, in Figure 40（C）In, the 1st convex portion 21 have tilt piece portion 30 and by its two ends the 1st, the 2nd contact piece portion （Bent sheet portion）31st, 32 cross sectional shape constituted, it is diamond tee section to prune portion 33.

In addition, in Figure 40（D）In, recess 33 is formed as into curve arc-shaped.Also, the 1st convex portion 21 has with being sealed Face P₁、P₂（Reference picture 32）Contact piece portion 31A, 32A of abutting.

And then, in Figure 40（A）~（D）In, the mistake assembling for being formed on circle main body 1 side with dotted line diagram prevents from using mark U. That is, recessed wrong assembling prevents from using mark U at non-relative region Z.Specifically, Figure 40（A）（C）（D）Mark U be configured in With Figure 37（B）（C）Identical position, in addition, Figure 40（B）Mark U and Figure 37（A）It is identical.

Then, in the 11st embodiment as shown in figure 41, the shape of cross section of sealing ring S circle main body 1 is circle, In the case where being assemblied in the seal groove 4B of housing 4 of scroll compressor mechanism 3 confined state, the 1st, the 2nd slip of arc-shaped connects Contact portion 26A, 27A respectively with by sealing surface P₁ 、P₂Sliding contact.1st, the 2nd sliding contact portion 26A, 27A is in ring master At the section of body 1, positioned at the position of the angle into about 90 °.In the circle main body 1 of such circular cross section, non- Opposed area Z also arranges assembling by mistake and prevents from using mark U（There is bottom outlet 57）.So, circle main body 1 can be substantially round（Circular wheel Profile）G´.

As shown in figure 42, it is this is substantially round（Circular wheel profile）Bis- points of cut-off rule Lc of G ', form the 1st convex portion 21 and the 2 convex portions 22.1st convex portion 21 and the 2nd convex portion 22 are across small seal clearance g so that tilt corresponding surface 23 and inclined plane 24 is relative. Also, the 1st convex portion 21 is formed with the portion of pruning 33 in the opposite surface side for tilting corresponding surface 23.In the 1st convex portion 21 and the phase of the 2nd convex portion 22 Under the gap closure state mutually overlapped, the 1st convex portion 21 and the 2nd convex portion 22 are configured to profile not from the cross section of circle main body 1 Line（Substantially round G '）The size exceeded.

Also, the shape of cross section of the 2nd convex portion 22 is thinner arch, by the He of arc sections 52（It is used as string）Inclined plane 24 form, and the arc sections 52 of the 2nd convex portion 22 exist（Shown in Figure 41）Under use state, and by sealing surface P₁ 、P₂Crimping（It is sliding Dynamic contact）.

Though in addition, omitting diagram, at the 1st convex portion 21, it can also be set to omit the shape of cross section in the portion of pruning 33.

Figure 42（A）Sealing ring be configured to the portion of pruning 33 for larger arch, the 1st convex portion 21 is made up of inclination piece portion 30, Foregoing inclination piece portion 30, which has, tilts corresponding surface 23 and skewed bottom surface sections 25 in parallel.Alternatively, it is also possible to by its wall thickness Be formed as gradually decreasing to one party.

In Figure 42（B）In, the cross sectional shape for pruning portion 33 is roof type, and the 1st convex portion 21 is that have nail portion 43,43 at two ends U-shaped nail shape.

Then, in Figure 42（C）In, the cross sectional shape for pruning portion 33 is rugby shape, and the 1st convex portion 21 has straight line in outside Skewed inclination corresponding surface 23, in inner side（Rear side）With sagittal curvature recess.

But, in Figure 42（A）In, on the non-relative region Z of circle main body 1, prevented as assembling by mistake with mark U provided with small Convex portion 54,54.Such small convex portion 54 is replaced into Figure 32~Figure 35 having been described above, Figure 37~Figure 40 hole 57, dolly dimple portion 59 come to set up be also free.

, should be by if being thought of as the mistake turned upside down the assembling of the figure in the use state shown in Figure 38, Figure 39 The 2nd convex portion 22 for being configured at the innermost portion of corner part 8 is present in lower section, and the 1st convex portion 21 is configured in innermost portion, it is clear that be difficult to The mode that fluid is leaked is not sealed.

Especially, it will also realize that in Figure 33, Figure 34, compared with enclosing the size of main body 1, the 1st convex portion 21, the pole of the 2nd convex portion 22 It is small, it is extremely difficult to the naked eye to judge which make correspond to corner part 8 in operation（Innermost portion）.In the present invention, such as Figure 35 It is illustrated, if turning over, by being detected by an unaided eye in assembling work, it can simply and clearly judge sealing ring S dress With direction.That is, can simply and be prevented securely from sealing ring S mistake assembling.In addition, such as it was found from Figure 35, can be almost Sealing ring S shape, construction is not set to set up mark U in the case of complicating.

But, it is sometimes desirable in order to reduce frictional resistance and with drawer at movable side by sealing surface P₁Corresponding 1st sliding contact Face 26（26A）Upper formation groove.It is being formed with the sealing ring S of such groove, such as Figure 33~as shown in Figure 35, will be multiple Small has bottom outlet 57 to separate predetermined distance in the circumferential to arrange, thus also have not with for reducing the above-mentioned recessed of frictional resistance In the case that groove is mixed, the advantage that can be positively identified.In addition, preventing from using mark U as assembling by mistake, above-mentioned implementation is not limited to Example, have for by opposed area Z by word, figure, mark to set up in a concave shape or convex be also preferred in the case of, and then, will be upper State embodiment and word, figure, mark and with being also free.

More than, as illustrated by based on Figure 32~Figure 42, sealing ring of the invention is the circle at the one of circumference with gap 5 Ring-type, with circle main body 1, the 1st convex portion 21, the 2nd convex portion 22, foregoing 1st convex portion 21, the 2nd convex portion 22 are from the 1st of the circle main body 1 End 11, the 2nd end 12 are protrusively provided in the circumferential, and then, it is equipped on by orthogonal two by sealing surface P₁、P₂Formed Corner part 8, be crimped on above-mentioned by sealing surface P₁、P₂To realize sealing function, aforementioned seal circle is configured to, except with it is orthogonal Two it is above-mentioned by sealing surface P₁、P₂Non-relative region Z outside relative sealing opposed area X sets wrong assembling to prevent Mark U is used, so can be prevented securely from, in the assembling to scroll compressor（Assembling）Above and below in operation（In table）Conversely Assembly defect（Assemble by mistake）.Thereby, it is possible to by the delicate and brand-new shape on the 1st minimum convex portion 21 and the 2nd convex portion 22 The achievement of the research and development of shape, inerrably brings into play at the scene.

In addition, overall by thermoplastic resin composition injection moulding, and above-mentioned assembling by mistake prevented from being passed through with mark U above-mentioned Injection moulding is integrally formed, so can prevent from being simply to set well with mark U efficiency by assembling by mistake.Moreover, logical The injection moulding of thermoplastic resin composition is crossed, high-quality, high performance sealing ring can easily, be inexpensively obtained.

Then, Figure 43~Figure 49 is the figure for representing the 12nd~the 15th embodiment and each variation of the present invention.It is overall Shape etc. structure it is roughly the same with the structure shown in above-mentioned Fig. 1~Figure 31, so omit repeat specification, but in Figure 43~figure In 49 embodiment and variation, it is maximum feature to possess this point of the 3rd convex portion 63.

Hereinafter, explain.In the embodiment and variation shown in Figure 43, Figure 44, Figure 45, the horizontal stroke of main body 1 is enclosed Cross sectional shape is rectangle, and the 1st convex portion 21 and the 2nd convex portion 22 use the rectangular cross section for enclosing main body 1 like that as shown in figure 44 Bis- points of cut-off rule Lc, is mutually corresponded to by the 1st corresponding surface 41 and the 2nd corresponding surface 42, and then, the 1st convex portion 21 is in the 1st corresponding surface 41 opposite surface side is formed with the portion of pruning（Recess）33.In addition, Figure 44 other accompanying drawings mark with and the identical accompanying drawing such as Figure 10 Mark correspondence, is omitted the description here.

Also, above-mentioned 3rd convex portion 63 is protrusively provided in the circumferential from the 1st end 11 of circle main body 1, the 3rd convex portion 63 As shown in Figure 43, Figure 44, Figure 45, for by the 1st convex portion 21 from the side of the portion of pruning 33（Collide, interfere relative to other objects Deng）Protection.

That is, compared with circle main body 1 is overall, the 1st convex portion 21 is minimum part, inadvertently being collided with other objects or Ground is dropped down onto from down, on desk when, the 1st convex portion 21 has simply by crack, the damaged possibility lost etc..Especially, Due to being thermoplastic resin composition, above-mentioned breakage is easily produced, such breakage is protected from the side of portion 33 of pruning of the 1st convex portion 21 Protect to play the function that the 1st convex portion breakage is prevented（Effect）.

In Figure 43, Figure 44（A）, in legend shown in Figure 46, it is the situation of square to represent the 3rd convex portion 63, in Figure 44（B） In, represent the square with chamfering 64.Moreover, with corner 18 represented in the Fig. 7 having been described above, form the corner The consistent mode in 18 right angle both sides, the 3rd convex portion 63 is configured near corner 18.

Also, the gap closure state overlapped in the 1st convex portion 21 and the 2nd convex portion 22（With reference to Fig. 5 for having been described above and Fig. 6）In, the 1st convex portion 21 of setting, the 2nd convex portion 22, each portion's size in cross section of the 3rd convex portion 63 are set to the 1st convex portion 21 and the 2nd The convex portion 63 of convex portion 22 and the 3rd is not from the contour line of the cross section of circle main body 1（Generally rectangular G shown in Fig. 7）The size exceeded（Chi Very little tolerance）.

I.e., as shown in figure 44, on 4 sides for the generally rectangular G for making the 1st convex portion 21, the 2nd convex portion 22, the 3rd convex portion 63 and Fig. 7 Overlap（Unanimously）In the case of,（1st convex portion 21）Tilt the He of corresponding surface 23（2nd convex portion 22）Formed between inclined plane 24 Small seal clearance g.Seal clearance g full-size wishes that setting turns into more than 10 μm and less than 100 μm.

So, in gap closure state, and so that the 1st convex portion 21, the 2nd convex portion 22, the 3rd convex portion 63 are with generally rectangular G's The mode that four sides are overlapped makes correspondence two sides 23,24（1st, the 2nd corresponding surface 41,42）Seal clearance g it is maximum in the state of, will most Wide arc gap size is set to more than 10 μm and less than 100 μm, so can suppress from correspondence two sides 23,24（1st, the 2nd correspondence Face 41,42）Leakage, and the 1st convex portion 21, the 2nd convex portion 22, the 3rd convex portion 63 do not exceed from generally rectangular G, and sealing property also can It is enough further to improve.Also, from Figure 43（B）It will also realize that, the 1st convex portion 21 and the 3rd convex portion 63 are by from the 1st end 11 of circle main body 1 End face 11Z parallel shapes be protrusively provided.

Then, in Figure 45（A）（B）In shown embodiment, along the side 65 for linking corner 18 and corner 19, it is equipped thin 3rd convex portion 63 of wall flaps shape.In the case of the Figure 45, in gap closure state, and so that the 1st convex portion 21 and the 2nd convex portion In the state of the 22 seal clearance g for making corresponding two sides 23,24 with generally rectangular G 4 side coincidence systems are maximum, by maximal clearance chi Very little to be set to more than 10 μm and less than 100 μm, the 1st convex portion 21 and the 2nd convex portion 22 be not from the contour line of circle main body 1（It is generally rectangular G）Exceed.Additionally, it is desirable that such as Figure 45（A）（B）It is shown, by the 1st convex portion 21 and the 2nd convex portion 22 and the 3rd convex portion 63 be configured to not from Enclose the contour line of main body 1（Generally rectangular G）Exceed.

But, in Figure 45（A）In shown embodiment, spacer portion 66 is formed on the upper end and the 1st convex portion of the 3rd convex portion 63 Between 21 the 1st contact piece portion 31.In Figure 45（B）In shown embodiment, the upper end of the convex portion 63 of thin-walled sheet the 3rd and the 1st convex Portion 21 is continuous.Also, the overall part by the 3rd convex portion 63 and the 1st convex portion 21 on one side 65 is formed.So, the 3rd is convex Portion 63 realizes the effect strengthened, and mold structure is simple, and this is favourable.

As shown in figure 46, in a compressed state, sealing ring S is pushed into by drawer at movable side by sealing surface P₁It is close with affixed side Front cover P₁The corner part 8 of formation, by fluid L pressure P₀, the elastic deformation of the 1st convex portion 21 and be pushed to the 2nd convex portion 22.

Can dynamic vortex 7 carry out eddying motion, thus the 1st sliding contact surface 26 and the 2nd sliding contact surface 27 and object Part, I.e. by sealing surface P₁, by sealing surface P₂Contact（Crimping）, by fluid L pressure P₀, the 1st convex portion 21 is pushed to the 2nd convex portion 22. 1st convex portion 21 pushes the 2nd convex portion 22, and thus the sealing between two parts of the 1st convex portion 21 and the 2nd convex portion 22 is improved, from close The leakage for sealing gap g fluid L is reduced.Such as it will also realize that from Figure 44 and Figure 45, on the 1st convex portion 21 and the 2nd convex portion 22, by even Continuous face is formed with the 1st sliding contact surface 26 and the 2nd sliding contact surface 27.Other, manufacture method, surface roughness, material etc. with Each embodiment illustrated in Fig. 1~Figure 42 is identical.

Based on Figure 46, illustrate the relation of the 3rd convex portion 63 and the 1st, the 2nd convex portion 21,22.Such as Figure 46 and Figure 43, Figure 44, figure 45（A）Illustrated, the 3rd convex portion 63 is separated with the 1st convex portion 21, is protrusively provided from the 1st end 11.As shown in figure 46, pressure is born Power P₀And the elastic deformation of the 1st convex portion 21 and play sealing（seal）Function, but the 3rd convex portion 63 and the sealing（seal）Function without Relation, as so-called " at void（ダミー）" exist, it is that the breakage for protecting the 1st convex portion 21 prevents from using convex portion.From the side of the portion of pruning 33 The breakage for protecting the 1st convex portion 21 to interfere with other objects and occurring crack, losing etc., according to circumstances, the 3rd convex portion 63 itself is broken Damage and absorb impact, protect the 1st convex portion 21.

In addition, in Figure 45（B）In, the 3rd convex portion 63 can also play the function of strengthening a part for the 1st convex portion 21.

Figure 47（A）（B）Be represent the present invention the 14th, the sectional view of the 15th embodiment.

The generally rectangular G for enclosing main body 1 is rectangle, constitutes the side of the 1st sliding contact surface 26（Short side）Slided than constituting the 2nd The side of contact surface 27（Long side）It is short.That is,（In use state, with drawer at movable side by sealing surface P₁Sliding contact）1st slip connects The frictional resistance of contacting surface 26 reduces, and sliding property is improved.

Such as Figure 47（A）（B）Shown, the shape of cross section of the 2nd convex portion 22 is formed as triangle, and the 1st convex portion 21 has and inclined Inclined tab portion 30, it is foregoing to tilt the inclination that there is the inclined plane 24 with one side of the quadrangle of the 2nd convex portion 22 to be in parallel shape in piece portion 30 Corresponding surface 23.Tilting piece portion 30 has inclination corresponding surface 23 in outside, is formed in inner side and prunes portion 33.

Figure 47（A）By Figure 45（A）Embodiment generally square setting rectangularity, the 3rd convex portion 63 along by corner 18, The 19 longer sides 65 linked are formed as the structure and Figure 45 of thin-walled sheet etc.（A）It is described identical, omit repeat specification.In addition, Figure 47（B）Represent Figure 47（A）The situation for pruning portion 33 that portion 33 changes over sagittal curvature of pruning for having corner angle.3rd convex portion 63 and Figure 47（A）With（B）Identical, solid line is separated with the 1st convex portion 21, is realized in Figure 45（A）The effect of middle explanation.In addition, also excellent Choosing, in Figure 47（A）（B）Each in, as shown in double dot dash line 67, along one side 65 by the 3rd convex portion 63（Prolong upward Stretch）Link with the 1st contact piece portion 31 of the 1st convex portion 21.It is acted on（Effect）With Figure 45（B）Described situation is identical.

Then, Figure 48 and Figure 49 are also represented by various modifications example.It is except the shape of cross section for enclosing main body 1 is the aspect of circle In addition, with Figure 43~Figure 46 identical structures, identical reference represents identical structure.

As shown in Figure 48 and Figure 49, the profile for the circular cross section that the 1st convex portion 21 and the 2nd convex portion 22 will enclose main body 1, which is used, to be divided Bis- points of secant Lc, is faced each other by the 1st corresponding surface 41, the 2nd corresponding surface 42.In the phase of the 1st corresponding surface 41 of the 1st convex portion 21 Portion 33 is pruned in reverse side formation, and in the side of the portion of pruning 33, the 1st convex portion breakage is prevented with the 3rd convex portion 63 from the 1st end 11 in circumference On be protrusively provided.

Moreover, such as Figure 48（A）（B）（C）Gap closure state that is shown, being overlapped in the 1st convex portion 21 and the 2nd convex portion 22 Under, the circular contour line of the 1st convex portion 21 and the 2nd convex portion 22 not from circle main body 1 exceeds.In addition, such as Figure 48（A）（B）（C）Institute Show, it is desirable to exceed the circular contour line that the 1st, the 2nd, the 3rd convex portion 21,22,63 are all configured to not from circle main body 1.

In Figure 48（A）In Figure 49, it is larger arch to prune portion 33, and the 1st convex portion 21 is made up of inclination piece portion 30, foregoing Tilting piece portion 30 has the bottom surface sections 25 of the 1st corresponding surface 41 and angled straight lines shape in parallel.In addition, two the 3rd convex portions 63, 63 are protrusively provided by the end face 11Z from the 1st end 11 of circle main body 1.Specifically, each 3rd convex portion 63 is substantially a quarter Circle, is equipped on the position of both ends 21A, 21A protection of the 1st convex portion 21 with separating shape.

Then, in Figure 48（B）In shown embodiment, the cross sectional shape for pruning portion 33 is roof type, the 1st convex portion 21 be Two ends have the U-shaped nail shape in nail portion 43,43.Also, the side of portion 33 is pruned at this, circle peak type is arranged（Ball mountain type）Two it is the 3rd convex Portion 63,63, protects above-mentioned nail portion 43,43.

Then, in Figure 48（C）In, the cross sectional shape for pruning portion 33 is rugby shape, and the 1st convex portion 21 has straight line in outside The 1st skewed corresponding surface 41, and in inner side（Rear side）With sagittal curvature recess.Also, the 3rd convex portion of circular 63 are equipped on the position in the portion of pruning 33.

In addition, it is also free that the shape for pruning portion 33 changes design in addition, and the shape of the 3rd convex portion 63 is also certainly By what is changed, as long as playing the function of protection so that effectively prevent the damaged just enough of the 1st convex portion 21.

More than, such as describe in detail, the sealing ring for being related to the present invention is formed as the annular shape at the one of circumference with gap 5 Global shape, with circle main body 1 and the 1st convex portion 21, the 2nd convex portion 22, foregoing 1st convex portion 21, the 2nd convex portion 22 are from the circle main body 1 the 1st end 11, the 2nd end 12 are set with being highlighted in the circumferential, are configured to, overall by thermoplastic resin composition one Ground is formed, and the shape of cross section of above-mentioned circle main body 1 is rectangle or circle, and above-mentioned circle is led in above-mentioned 1st convex portion 21 and the 2nd convex portion 22 Bis- points of the cut-off rule Lc in the cross section of the rectangle of body 1, is faced each other by the 1st corresponding surface 41, the 2nd corresponding surface 42, and then, on It is to be formed with the shape of cross section in the portion of pruning 33 in the opposite surface side of above-mentioned 1st corresponding surface 41 to state the 1st convex portion 21, moreover, upper The side of the portion of pruning 33 is stated, the 1st convex portion breakage prevents from being protrusively provided in the circumferential from above-mentioned 1st end 11 with the 3rd convex portion 63, on The 1st convex portion 21 and above-mentioned 2nd convex portion 22 are stated under the gap closure state overlapped, above-mentioned 1st convex portion 21 and above-mentioned 2nd convex Contour line of the portion 22 not from the cross section of above-mentioned circle main body 1 exceeds, so the seam areas of the 1st convex portion 21 and the 2nd convex portion 22 Sealing is enhanced, and can reduce the fluid leakage from the seam areas, especially, can be by the 3rd convex portion 63, effectively Prevent minimum the 1st convex portion 21 compared with enclosing main body 1 from being interfered and damaged, the sealing of above-mentioned seam areas with other objects It is maintained.It by the injection moulding of thermoplastic resin composition, can easily be sized, can easily, inexpensively obtain High-quality, high performance sealing ring, can omit the machining such as cutting, grinding, cut-out, and the generation of spillage of material is also less.

3rd convex portion 63 also can be with the 1st, the 2nd convex portion 21,22 simultaneously by the injection moulding of above-mentioned material come easy landform Into.

Description of reference numerals

1 circle main body

5 gaps

11 the 1st ends

12 the 2nd ends

13 maximum sized positions

15 corners

18 corners

20 notch（Cliff portion）

21 the 1st convex portions

22 the 2nd convex portions

26 the 1st sliding contact surfaces

27 the 2nd sliding contact surfaces

29 notch

33 prune portion（Recess）

41 the 1st corresponding surfaces

42 the 2nd corresponding surfaces

63 the 3rd convex portions

G is generally rectangular

G ' circular wheel profiles

Lc cut-off rules

M₁、M₂It is circumferential

P₁Drawer at movable side is by sealing surface

P₂Affixed side is by sealing surface

P₅Central point

R₁₃、R₁、R₂Radius of curvature

S sealing rings

U misses assembling and prevents from using mark

X sealing opposed areas

Z non-relative regions.

Claims (10)

1. a kind of sealing ring, is formed as having gap at the one of circumference（5）Circular global shape, with circle main body （1）With the 1st convex portion（21）, the 2nd convex portion（22）, foregoing 1st convex portion（21）, the 2nd convex portion（22）By from the circle main body（1）The 1st End（11）, the 2nd end（12）It is protrusively provided in the circumferential, it is characterised in that

It is overall to be integrally formed by thermoplastic resin composition,

Above-mentioned circle main body（1）Shape of cross section be rectangle, above-mentioned 1st convex portion（21）With the 2nd convex portion（22）By above-mentioned circle main body （1）Rectangle cross section by cut-off rule（Lc）Two points, by the 1st corresponding surface（41）, the 2nd corresponding surface（42）Come mutual face It is right, and then, above-mentioned 1st convex portion（21）It is in above-mentioned 1st corresponding surface（41）Opposite surface side be formed with the portion of pruning（33）It is transversal Face shape,

It is set to, in above-mentioned 1st convex portion（21）With above-mentioned 2nd convex portion（22）Under the gap closure state overlapped, the above-mentioned 1st Convex portion（21）With above-mentioned 2nd convex portion（22）Not from above-mentioned circle main body（1）Cross section the size that exceeds of contour line.

2. a kind of sealing ring, is formed as having gap at the one of circumference（5）Circular global shape, with circle main body （1）With the 1st convex portion（21）, the 2nd convex portion（22）, foregoing 1st convex portion（21）, the 2nd convex portion（22）By from the circle main body（1）The 1st End（11）, the 2nd end（12）It is protrusively provided in the circumferential, it is characterised in that

It is overall to be integrally formed by thermoplastic resin composition,

Above-mentioned circle main body（1）Shape of cross section be, will be with drawer at movable side by sealing surface（P₁）With affixed side by sealing surface（P₂）Turn Corner（8）It is corresponding, on generally rectangular（G）A corner（15）To be diagonal above-mentioned generally rectangular（G）Other corners （18）Otch, forms notch（20）,

Above-mentioned 1st convex portion（21）With the 2nd convex portion（22）There to be above-mentioned notch（20）Shape of cross section above-mentioned circle main body （1）Cross section by cut-off rule（Lc）Two points, by the 1st corresponding surface（41）, the 2nd corresponding surface（42）It is above-mentioned to face each other 1st convex portion（21）To be formed with and above-mentioned circle main body（1）Above-mentioned notch（20）Portion is pruned in sequential like（33）It is transversal Face shape,

It is set to, in above-mentioned 1st convex portion（21）With above-mentioned 2nd convex portion（22）Under the gap closure state overlapped, the above-mentioned 1st Convex portion（21）With above-mentioned 2nd convex portion（22）Not from above-mentioned generally rectangular（G）The size exceeded.

3. sealing ring as claimed in claim 1 or 2, it is characterised in that

Above-mentioned circle main body（1）With drawer at movable side by sealing surface（P₁）1st sliding contact surface of sliding contact（26）Possess for the resistance that rubs The shallow slot shape notch that power reduces（29）.

4. sealing ring as claimed in claim 1 or 2, it is characterised in that

Above-mentioned circle main body（1）With drawer at movable side by sealing surface（P₁）1st sliding contact surface of sliding contact（26）It is configured to, by rubbing The low material of coefficient covers to be formed to reduce frictional resistance.

5. a kind of sealing ring, is formed as having gap at the one of circumference（5）Circular global shape, with circle main body （1）With the 1st convex portion（21）, the 2nd convex portion（22）, foregoing 1st convex portion（21）, the 2nd convex portion（22）By from the circle main body（1）The 1st End（11）, the 2nd end（12）It is protrusively provided in the circumferential, it is characterised in that

It is overall to be integrally formed by thermoplastic resin composition,

Above-mentioned circle main body（1）Shape of cross section for circle, above-mentioned 1st convex portion（21）With the 2nd convex portion（22）By above-mentioned circle main body （1）Circular cross section by cut-off rule（Lc）Two points, by the 1st corresponding surface（41）, the 2nd corresponding surface（42）Come mutual face It is right,

It is set to, in above-mentioned 1st convex portion（21）With above-mentioned 2nd convex portion（22）Under the gap closure state overlapped, the above-mentioned 1st Convex portion（21）With above-mentioned 2nd convex portion（22）Not from above-mentioned circle main body（1）Cross section contour line（G´）The size exceeded.

6. a kind of sealing ring, is formed as having gap at the one of circumference（5）Circular global shape, with circle main body （1）With the 1st convex portion（21）, the 2nd convex portion（22）, foregoing 1st convex portion（21）, the 2nd convex portion（22）By from the circle main body（1）The 1st End（11）, the 2nd end（12）It is protrusively provided in the circumferential, it is characterised in that

It is overall to be integrally formed by thermoplastic resin composition,

Above-mentioned circle main body（1）Shape of cross section for circle, above-mentioned 1st convex portion（21）With the 2nd convex portion（22）By above-mentioned circle main body （1）Circular cross section by cut-off rule（Lc）Two points, by the 1st corresponding surface（41）, the 2nd corresponding surface（42）Come mutual face It is right, and then, above-mentioned 1st convex portion（21）It is in above-mentioned 1st corresponding surface（41）Opposite surface side be formed with the portion of pruning（33）It is transversal Face shape,

It is set to, in above-mentioned 1st convex portion（21）With above-mentioned 2nd convex portion（22）Under the gap closure state overlapped, the above-mentioned 1st Convex portion（21）With above-mentioned 2nd convex portion（22）Not from above-mentioned circle main body（1）Cross section contour line（G´）The size exceeded.

7. the sealing ring as any one of claim 1,2,5 or 6, it is characterised in that

The above-mentioned circle main body of above-mentioned opening-wide state（1）It is configured to, relative to above-mentioned gap（5）Central point（P₅）, 180 ° ± There is radius of curvature in the range of 30 °（R₁₃）For maximum sized position（13）, it is set to, from the maximum sized position（13） Respectively to above-mentioned 1st end（11）, the 2nd end（12）, with circumference（M₁）（M₂）It is upper close, radius of curvature（R₁）（R₂）Subtract It is small, in above-mentioned 1st convex portion（21）With the 2nd convex portion（22）Under the gap closure state overlapped, global shape is in circular.

8. a kind of sealing ring, is formed as having gap at the one of circumference（5）Circular global shape, with circle main body （1）With the 1st convex portion（21）, the 2nd convex portion（22）, foregoing 1st convex portion（21）, the 2nd convex portion（22）By from the circle main body（1）The 1st End（11）, the 2nd end（12）It is protrusively provided in the circumferential, and then, it is equipped on by orthogonal two by sealing surface（P₁） （P₂）The corner part of formation（8）, it is crimped on above-mentioned by sealing surface（P₁）（P₂）To realize sealing function, it is characterised in that

Except above-mentioned by sealing surface with orthogonal two（P₁）（P₂）Relative sealing opposed area（X）In addition non-relative Region（Z）On, set wrong assembling to prevent from using mark（U）.

9. sealing ring as claimed in claim 8, it is characterised in that

It is overall to be injection molded by thermoplastic resin composition, and above-mentioned assembling by mistake is prevented from using mark（U）Pass through above-mentioned note Shaping is penetrated to be integrally formed.

10. the sealing ring as any one of claim 1,2 or 6, it is characterised in that

Portion is pruned above-mentioned（33）Side, the 1st convex portion breakage is prevented with the 3rd convex portion（63）By from above-mentioned 1st end（11）In circumference On be protrusively provided.