CN1757897A - Combined piston ring - Google Patents
Combined piston ring Download PDFInfo
- Publication number
- CN1757897A CN1757897A CN 200410040819 CN200410040819A CN1757897A CN 1757897 A CN1757897 A CN 1757897A CN 200410040819 CN200410040819 CN 200410040819 CN 200410040819 A CN200410040819 A CN 200410040819A CN 1757897 A CN1757897 A CN 1757897A
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- CN
- China
- Prior art keywords
- ring
- tilted
- otch
- narrow
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A combined piston ring is composed of the overlapped upper and lower rings, whose cuts are staggered. It features that the cut of upper ring is inclined leftward and has the matched boss and notch, and the cut of lower ring is inclined rightward and has the matched boss and notch, resulting in high sealing performance to save oil.
Description
Technical field
The present invention relates to engine fittings, be specifically related to a kind of compound piston ring.
Background technique
Traditional piston gas ring is the monocycle that has straight cut, is contained on the piston with after cylinder body cooperates, though the contact of otch two ends, but still having straight-through gas leakage gap, its gap in use increases gradually, causes cylinder combustion oil gas body to leak, energy consumption increases, and engine performance descends.Leak in order to alleviate fuel oil-gas, this monolithic piston gas ring in 2-3 road is housed on piston usually, and their otch is staggered mutually, form the sealing configuration of " labyrinth " formula.The sealing configuration of this throttle type working principle, though the effect of certain enhanced leaktightness is arranged, but still have the defective of leakage gas.Particularly in use, each piston gas ring otch can occur and align, cause the phenomenon of short circuit gas leakage to take place mutually, make the significant sealing affection variation.In order to improve the sealability of piston gas ring, people have designed the main ring of band seal plate and the built-up piston compression ring of superimposed inner loop formation on main ring, and, make the otch alignment mutually in use of main ring and inner loop at main ring and inner loop increase position structure.Since seal plate and main ring be connected to bonding or grafting, seal plate comes off easily in the use, thereby poor reliability; After increasing position structure, make the structure of piston ring become complicated, make and install all inconvenient.
Summary of the invention
The purpose of this invention is to provide a kind of compound piston ring, the situation that otch aligns fully mutually between the piston ring that it can avoid making up increases the resistance that fuel oil-gas leaks, and improves sealability, and it is simple in structure, and manufacturing is easy for installation easily.
A kind of compound piston ring of the present invention, comprise ring and following ring, last ring overlaps down on the ring, and both otch stagger mutually, it is characterized in that, the left end of last rings cut is tilted to the left, the middle part is provided with first groove wide at the top and narrow at the bottom and that the bottom is tilted to the left, the right-hand member of last rings cut also is tilted to the left, and the middle part is provided with first projection up-narrow and down-wide and that the top is tilted to the left, first projection and the first groove corresponding matching; The right-hand member of following rings cut is tilted to the right, and the middle part is provided with second groove wide at the top and narrow at the bottom and that the bottom is tilted to the right, and the left end of following rings cut also is tilted to the right, and the middle part is provided with second projection, second projection and the second groove corresponding matching up-narrow and down-wide and that the top is tilted to the right.Because the otch of last ring is tilted to the left, the otch of ring is tilted to the right down, so Huan otch can not overlap fully up and down, thereby has improved sealability; At the middle part of encircling angular cutouts up and down is concavo-convex cooperation, forms tortuous slit, and two places are arranged is the acute angle turnover, thereby has increased the resistance that fuel oil-gas leaks, and has further improved sealability.
Described a kind of compound piston ring, last ring and the thickness that encircles down equate, the angle ∠ α that the two ends, the left and right sides of last rings cut are tilted to the left equates also that with the angle ∠ β that the two ends, the left and right sides of following rings cut are tilted to the right ∠ α and ∠ β are 20 °-75 °, so that manufacturing.
The present invention compares with prior art and has the following advantages: sealing is reliable, saves fuel oil; Simple in structure, make easily, easy for installation.
Description of drawings
Fig. 1 (a) is a structural representation of the present invention, (b) is the plan view of (a).
Fig. 2 is a structural representation of going up ring.
Fig. 3 is the structural representation that encircles down.
Embodiment
Below in conjunction with accompanying drawing structure of the present invention is further described.
Referring to Fig. 2, on the wire cutting machine tool will on ring 1 blank to process the angle ∠ α that is tilted to the left be 45 °, the recessed left otch in middle part, and the wide at the top and narrow at the bottom and bottom of groove is tilted to the left; Like this, the left end at last ring 1 otch promptly forms first groove 3 wide at the top and narrow at the bottom and that the bottom is tilted to the left; Then, the right-hand member of last ring 1 otch is processed into first projection 4 up-narrow and down-wide and that the top is tilted to the left, thereby guarantees first projection 4 and first groove, 3 corresponding matching.
Referring to Fig. 3, on the wire cutting machine tool with thickness with on the blank of the ring 1 following ring 2 that equates to process the angle ∠ β that is tilted to the right be 45 °, the recessed to the right otch in middle part, and the wide at the top and narrow at the bottom and bottom of groove is tilted to the right; Like this, promptly form second groove 5 wide at the top and narrow at the bottom and that the bottom is tilted to the right at the right-hand member that encircles 2 otch down; Then, the left end that encircles 2 otch down is processed into second projection 6 up-narrow and down-wide and that the top is tilted to the right, thereby guarantees second projection 5 and second groove, 6 corresponding matching.
Referring to Fig. 1, during use, will descend ring 2 to pack in the annular groove on the piston earlier, then, last ring 1 is also packed in the same annular groove on the piston, overlap down ring 2 above, and the otch that makes ring 1 encircles 2 and staggers with following, the angle that staggers is best with 180 °.
Claims (3)
1, a kind of compound piston ring, comprise ring (1) and encircle (2) down, last ring overlaps down on the ring, and both otch stagger mutually, it is characterized in that, the left end of last ring (1) otch is tilted to the left, the middle part is provided with first groove (3) wide at the top and narrow at the bottom and that the bottom is tilted to the left, the right-hand member of last ring (1) otch also is tilted to the left, and the middle part is provided with first projection (4) up-narrow and down-wide and that the top is tilted to the left, first projection (4) and first groove (3) corresponding matching; The right-hand member of following ring (2) otch is tilted to the right, the middle part is provided with second groove (5) wide at the top and narrow at the bottom and that the bottom is tilted to the right, the left end of following ring (2) otch also is tilted to the right, the middle part is provided with second projection (6) up-narrow and down-wide and that the top is tilted to the right, second projection (6) and second groove (5) corresponding matching.
2, a kind of compound piston ring according to claim 1 is characterized in that, the angle ∠ α that the two ends, the left and right sides of last ring (1) otch are tilted to the left equates that with the angle ∠ β that the two ends, the left and right sides of encircling (2) otch down are tilted to the right ∠ α and ∠ β are 20 °-75 °.
3, a kind of compound piston ring according to claim 1 and 2 is characterized in that, the thickness of last ring (1) and following ring (2) equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410040819 CN1757897A (en) | 2004-10-08 | 2004-10-08 | Combined piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410040819 CN1757897A (en) | 2004-10-08 | 2004-10-08 | Combined piston ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1757897A true CN1757897A (en) | 2006-04-12 |
Family
ID=36703424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410040819 Pending CN1757897A (en) | 2004-10-08 | 2004-10-08 | Combined piston ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1757897A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8827277B2 (en) | 2010-08-20 | 2014-09-09 | Zengli Yang | Oil-reserving piston ring |
| CN104696097A (en) * | 2015-02-27 | 2015-06-10 | 秦德伟 | Piston ring |
-
2004
- 2004-10-08 CN CN 200410040819 patent/CN1757897A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8827277B2 (en) | 2010-08-20 | 2014-09-09 | Zengli Yang | Oil-reserving piston ring |
| CN104696097A (en) * | 2015-02-27 | 2015-06-10 | 秦德伟 | Piston ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |