CN2599258Y - Fully closed piston, piston ring assembly - Google Patents
Fully closed piston, piston ring assembly Download PDFInfo
- Publication number
- CN2599258Y CN2599258Y CNU032012691U CN03201269U CN2599258Y CN 2599258 Y CN2599258 Y CN 2599258Y CN U032012691 U CNU032012691 U CN U032012691U CN 03201269 U CN03201269 U CN 03201269U CN 2599258 Y CN2599258 Y CN 2599258Y
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- ring
- piston
- compression
- elastic ring
- face
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Abstract
The utility model relates to a fully closed piston, piston ring assembly. At least a gaseous ring is disposed in a gaseous ring groove of a piston. A bushing ring, embodied as an overlap joint ring body, is arranged on the radial inner wall of the gaseous ring; a close type elastic ring without opening is arranged between the bushing ring and the bottom wall of the gaseous ring groove. The radial outer wall of the elastic ring is tightly contacted with the radial inner wall of the gaseous ring. The radial inner wall of the elastic ring is tightly contacted with the bottom wall of the gaseous ring groove. The radial outer wall of the bushing ring is tightly contacted with the radial inner wall of the gaseous ring. The utility model cuts off the side clearance between the piston ring and the piston ring groove and the channel between the back clearance and the opening gap of the piston ring to ensure that the gas cylinder system of the engine always in good work state so as to prolong the service life of the engine.
Description
Technical field
The utility model relates to a kind of completely closed piston, piston-ring packing, and is special relevant with the cooperating structure of piston, piston ring.
Background technique
In the cooperating structure of piston, piston ring, the passage of back clearance and piston ring gap between existing between piston ring and the piston ring groove at the bottom of two sideshakes and piston ring inner circle and piston ring groove, like this, just have of the appearance of crankcase machine oil to cylinder pump oil phenomenon, thereby make cylinder produce carbon deposit, cause cylinder wear.Especially in the middle and later periods of motor operation, because wearing and tearing such as piston ring annular groove, piston ring, cylinders, the space of sideshake, back clearance is strengthened, and pump oil phenomenon is more serious, so that the flashing plug is stained with oil, and carbon deposit is smoldered, exhaust pollution, faults such as power failure.At present, in order effectively to improve the closed performance of cylinder, it is a lot of that piston ring is improved the technology that makes it more to seal, a kind of sealing technique without leakage for piston ring is disclosed as CN1274054A, ring in one of two outer shroud is housed in the one piston ring groove, piston ring otch axial leakage is blocked mutually by two outer shrouds, carries on the back the leakage of the outside rings cut of gas in the gap at the bottom of the annular groove and is blocked by interior ring.CN2144734Y discloses a kind of completely closed piston, piston-ring packing for another example, and the interior circle of its two compression rings is equipped with the enclosed elastic ring, and this enclosed elastic ring is an opening.The complex structure that these prior arts have, what have does not cut off the sideshake between piston ring and the piston ring groove and the passage of back clearance, is therefore promoted widely and uses.
Summary of the invention
The purpose of this utility model provides a kind of completely closed piston, piston-ring packing, technical problem to be solved is to make this piston, piston-ring packing can cut off the sideshake between piston ring and the piston ring groove and the passage of back clearance and piston ring gap, and the cylinder seal system that can guarantee motor is in good working order all the time, thereby improves the working life of motor.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
A kind of completely closed piston, piston-ring packing, be placed with at least one compression ring in the compression of piston, the radially inner side end face of compression ring is equipped with grommet, this grommet is the ring body of overlap joint mouth, its technological scheme is: have the closed elastic ring of not being with opening between the diapire of grommet and compression, the radial outside end face of this elastic ring closely contacts with the radially inner side end face of grommet, the radially inner side end face of elastic ring closely contacts with the diapire of compression, and the radial outside end face of grommet closely contacts with the radially inner side end face of compression ring.
In the technique scheme, the diapire of described compression can be toroidal surface, and the radially inner side end face of elastic ring closely contacts with this toroidal surface, and the shape of its axial cross section of elastic ring can be circle or oblateness or rectangular.The diapire of above-mentioned compression can be toroidal surface, the radially inner side end face of elastic ring closely contacts with this toroidal surface, the diapire of compression has along the annular groove of at least one sidewall of this compression, the parallel sidewalls of the non-compression sidewall of described annular groove is in the compression sidewall, and that the radially inner side end face axial end of elastic ring has is radially-protruding along it, enter and cooperate with it in the above-mentioned annular groove and with the spring leaf of this annular groove sealing.The diapire of above-mentioned compression can be triangle through the outer contoured shape in the piston axis section, the axial cross section of its radially inner side end face and the tight elastic ring that contacts of diapire of compression be shaped as triangle.The diapire of above-mentioned compression is can be for trapezoidal through the outer contoured shape in the piston axis section, and being shaped as of the axial cross section of its radially inner side end face and the tight elastic ring that contacts of diapire of compression is trapezoidal.The upper-end surface of above-mentioned elastic ring and at least one end face in the lower end surface along the circumferential direction can have ring-shaped depression.One of them along the circumferential direction can have ring-shaped depression the upper-end surface of above-mentioned elastic ring or lower end surface, and upper-end surface or the lower end surface with the elastic ring of this ring-shaped depression along the circumferential direction do not have annular opening, and this annular opening is connected with looping pit in the elastic ring.The upper-end surface of above-mentioned elastic ring and at least one end face in the lower end surface along the circumferential direction can have annular opening, each annular opening and interior being connected with its corresponding looping pit of elastic ring.Above-mentioned elastic ring can be set with in its ring-shaped depression elastic ring is applied active force and makes elastic ring contact spring more closely with grommet, grommet with cylinder inner wall with compression ring, compression ring.Can have skeleton in the above-mentioned elastic ring.
Said structure of the present utility model, make the diapire of described elastic ring and compression, elastic ring and grommet, grommet and compression ring, compression ring contacts tightr with cylinder inner wall, the sideshake between piston ring (being compression ring) and the piston ring groove and the passage of back clearance and piston ring gap have been cut off, even if in engine operation to the middle and later periods, cylinder, after compression ring wearing and tearing and side back clearance strengthen, above-mentioned each parts still can closely contact, the utlity model has automatic closed piston ring, the effect in the space that cylinder wall wearing and tearing back produces, it has sealed oil pump oil path effectively, played good seal action, it makes cylinder chamber not have carbon deposit, and is very favourable to reducing cylinder wear.Because crankcase is gas blowby not, makes machine oil pollution-free, no carbon deposit can not increase the wearing and tearing of parts such as bent axle, bearing, gear, has saved lubricant oil.Because no back clearance does not just have counterpressure yet, piston ring does not just have near the phenomenon generation that produces step the common cylinder top dead center to just there not being huge positive pressure near the cylinder wall top dead center yet.Because pollution-free, no carbon deposit, the motor service wear is little, and the phenomenon that does not also just have the bulge cylinder takes place, and the power of motor is promoted, and has saved fuel.The utility model also can guarantee that the cylinder seal system of motor is in good working order all the time, thereby has improved the working life of motor.
The utility model is used for motorcycle four-stroke engine, the cylinder diameter of motor is Ф 39mm, and there is 0.03mm step radially at the top dead center place, with standard openings 0.25mm compression ring, join elastic ring of the present utility model and piston, then use three groups of opening compression rings, first group is 1.5mm's, second group be 2.5mm, and the 3rd group is 6.5mm, and sideshake does not wait at 0.1-0.3mm.Through test, the utility model can play good seal action, and can guarantee that the cylinder seal system of motor is in good working order all the time, has had the working life of motor to increase substantially.
Used its material of elastic ring of the utility model is preferably perfluor ether, this material has very outstanding temperature tolerance (rationally serviceability temperature is for-45 ℃-316 ℃), can under 288 ℃ of temperature, use for a long time, it combines the spring-back force and the sealing force of elastic material, and the erosion of anti-nearly all chemical reagent, its operating temperature is far above upper limit working temperature 230-240 ℃ of the piston ring that now measures, so the technical solution of the utility model is feasible, safety.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the partial enlarged view (embodiment) of I among Fig. 1.
Fig. 3 is along the sectional view of A-A line among Fig. 1.
Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, Figure 15, Figure 16, Figure 17, Figure 18, Figure 19, Figure 20, Figure 21, Figure 22 are respectively each embodiment's of the present utility model partial view.
Embodiment
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, the utlity model has cylinder liner 2, piston 1, one or two compression rings 5, grommet 4, elastic ring 3.Be placed with one or two compression rings 5 in the compression of piston 1, the radially inner side end face of compression ring 5 is equipped with grommet 4, and the width of grommet 4 is corresponding with compression ring width and compression ring internal diameter with diameter.Grommet 4 is the ring body of overlap joint mouth, and grommet preferably adopts the curved-surface structure that coincide mutually in lap-joint.Between the diapire 6 of grommet 4 and compression, has the closed elastic ring 3 of not being with opening, the radial outside end face of this elastic ring 3 closely contacts with the radially inner side end face of grommet 4, the radially inner side end face of elastic ring 3 closely contacts with the diapire 6 of compression, and the radial outside end face of grommet 4 closely contacts with the radially inner side end face of compression ring 5.The diapire 6 of above-mentioned compression is a toroidal surface, and the radially inner side end face of elastic ring 3 closely contacts with this toroidal surface, and the shape of elastic ring 3 its axial cross sections can be circle or oblateness or rectangular, can also be two oblate combined shaped, as shown in Figure 5.
As shown in Figure 6, the diapire 6 of above-mentioned compression is a toroidal surface, the radially inner side end face of elastic ring 3 closely contacts with this toroidal surface, the diapire 6 of compression has along the annular groove 6a of at least one sidewall of this compression, the sidewall 6b of the non-compression sidewall of described annular groove 6a is parallel to the compression sidewall, that the radially inner side end face axial end of elastic ring 3 has is radially-protruding along it, enter and cooperate with it in the above-mentioned annular groove 6a and with the spring leaf 3a of this annular groove sealing, can make that like this sealing is better between the diapire of compression and the elastic ring.As shown in Figure 7, the diapire 6 of above-mentioned compression is being an isosceles triangle through the outer contoured shape in the piston axis section, the axial cross section of its radially inner side end face and the tight elastic ring 3 that contacts of diapire of compression be shaped as isosceles triangle.As shown in Figure 8, the diapire 6 of above-mentioned compression is being an isosceles trapezoid through the outer contoured shape in the piston axis section, the axial cross section of its radially inner side end face and the tight elastic ring 3 that contacts of diapire of compression be shaped as isosceles trapezoid.
As Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, Figure 15, Figure 16, shown in Figure 17, the upper-end surface of above-mentioned elastic ring 3 and at least one end face in the lower end surface along the circumferential direction have ring-shaped depression 3b.Depression 3b is being U-shaped or V-arrangement through the outer contoured shape in the axis profile of elastic ring 3, or the combination of the radial outside wall of U-shaped and elastic ring upper end or lower end rectangular breach.Air in the depression produces radial effect power to elastic ring like this, makes elastic ring contact tightr with the diapire of grommet and compression respectively.As Figure 18, Figure 19, shown in Figure 20, one of them along the circumferential direction has ring-shaped depression 3b the upper-end surface of above-mentioned elastic ring 3 or lower end surface, upper-end surface or the lower end surface with the elastic ring 3 of this ring-shaped depression along the circumferential direction do not have annular opening 3d, and this annular opening is connected with looping pit 3c in the elastic ring 3.Air in the depression, the air in the looping pit all produce radial effect power to elastic ring like this, make elastic ring contact tightr with the diapire of grommet and compression respectively.As Figure 21, shown in Figure 22, the upper-end surface of above-mentioned elastic ring 3 and at least one end face in the lower end surface along the circumferential direction have annular opening 3d, each annular opening 3d and elastic ring 3 interior being connected with its corresponding looping pit 3c.Air in the looping pit produces radial effect power to elastic ring like this, makes elastic ring contact tightr with the diapire of grommet and compression respectively.Compression ring 5 does not have the tight contact of when wearing and tearing annular opening 3d and is in sealing state, and after compression ring 5 wearing and tearing, annular opening 3d progressively enters open state, and air enters looping pit 3c elastic ring is produced radial effect power.As shown in figure 10, above-mentioned elastic ring 3 is set with in its ring-shaped depression 3b elastic ring is applied active force and makes elastic ring contact spring 7 more closely with grommet, grommet with cylinder inner wall with compression ring, compression ring.As Figure 16, shown in Figure 17, have skeleton 8 in the above-mentioned elastic ring 3, this skeleton can reduce the distortion of elastic ring 3, is convenient to tightr contact of diapire of elastic ring 3 and grommet and compression.
Claims (10)
1, a kind of completely closed piston, piston-ring packing are placed with at least one compression ring in the compression of piston, the radially inner side end face of compression ring is equipped with grommet, and this grommet is the ring body of overlap joint mouth, it is characterized in that:
Between the diapire (6) of grommet (4) and compression, has the closed elastic ring (3) of not being with opening, the radial outside end face of this elastic ring (3) closely contacts with the radially inner side end face of grommet (4), the radially inner side end face of elastic ring (3) closely contacts with the diapire (6) of compression, and the radial outside end face of grommet (4) closely contacts with the radially inner side end face of compression ring (5).
2, completely closed piston according to claim 1, piston-ring packing, the diapire (6) that it is characterized in that above-mentioned compression is a toroidal surface, the radially inner side end face of elastic ring (3) closely contacts with this toroidal surface, and the shape of its axial cross section of elastic ring (3) can be circle or oblateness or rectangular.
3, completely closed piston according to claim 1, piston-ring packing, the diapire (6) that it is characterized in that above-mentioned compression is a toroidal surface, the radially inner side end face of elastic ring (3) closely contacts with this toroidal surface, the diapire of compression (6) has the annular groove (6a) along at least one sidewall of this compression, the sidewall (6b) of the non-compression sidewall of described annular groove (6a) is parallel to the compression sidewall, and the radially inner side end face axial end of elastic ring (3) has along it radially-protruding, enter in the above-mentioned annular groove (6a) and to cooperate with it and the spring leaf (3a) of this annular groove sealing.
4, completely closed piston according to claim 1, piston-ring packing, the diapire (6) that it is characterized in that above-mentioned compression is being a triangle through the outer contoured shape in the piston axis section, the axial cross section of its radially inner side end face and the tight elastic ring (3) that contacts of diapire of compression be shaped as triangle.
5, completely closed piston according to claim 1, piston-ring packing, the diapire (6) that it is characterized in that above-mentioned compression is being trapezoidal through the outer contoured shape in the piston axis section, and being shaped as of the axial cross section of its radially inner side end face and the tight elastic ring (3) that contacts of diapire of compression is trapezoidal.
6, completely closed piston according to claim 2, piston-ring packing is characterized in that the upper-end surface of above-mentioned elastic ring (3) and at least one end face in the lower end surface along the circumferential direction have ring-shaped depression (3b).
7, completely closed piston according to claim 2, piston-ring packing, one of them along the circumferential direction has ring-shaped depression (3b) to it is characterized in that the upper-end surface of above-mentioned elastic ring (3) or lower end surface, upper-end surface or the lower end surface with the elastic ring (3) of this ring-shaped depression along the circumferential direction do not have annular opening (3d), and this annular opening is connected with looping pit (3c) in the elastic ring (3).
8, completely closed piston according to claim 2, piston-ring packing, it is characterized in that the upper-end surface of above-mentioned elastic ring (3) and at least one end face in the lower end surface along the circumferential direction have annular opening (3d), each annular opening (3d) and interior being connected of elastic ring (3) with its corresponding looping pit (3c).
9, completely closed piston according to claim 6, piston-ring packing is characterized in that above-mentioned elastic ring (3) is set with elastic ring is applied active force and makes elastic ring contact spring (7) more closely with grommet, grommet with cylinder inner wall with compression ring, compression ring in its ring-shaped depression (3b).
10, completely closed piston according to claim 6, piston-ring packing is characterized in that having skeleton (8) in the above-mentioned elastic ring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032012691U CN2599258Y (en) | 2003-01-18 | 2003-01-18 | Fully closed piston, piston ring assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032012691U CN2599258Y (en) | 2003-01-18 | 2003-01-18 | Fully closed piston, piston ring assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2599258Y true CN2599258Y (en) | 2004-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032012691U Expired - Fee Related CN2599258Y (en) | 2003-01-18 | 2003-01-18 | Fully closed piston, piston ring assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2599258Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090211A (en) * | 2016-07-14 | 2016-11-09 | 邹敏 | A kind of U-shaped lining ring of piston ring |
-
2003
- 2003-01-18 CN CNU032012691U patent/CN2599258Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090211A (en) * | 2016-07-14 | 2016-11-09 | 邹敏 | A kind of U-shaped lining ring of piston ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |