CN2729340Y

CN2729340Y - Sealed piston ring

Info

Publication number: CN2729340Y
Application number: CN 200420068373
Authority: CN
Inventors: 舒忠军
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-08-03
Filing date: 2004-08-03
Publication date: 2005-09-28
Anticipated expiration: 2014-08-03

Abstract

The utility model discloses a sealed piston ring for a piston of an internal combustion engine. Cuts are arranged on the ring; the cross section of the ring is rectangular; the cut on one end is provided with a flange whose cross section is regularly triangular; the cut on the other end is provided with a flange whose cross section is pentagonal; the flange whose cross section is pentagonal is matched with the flange whose cross section is in regularly triangular; the inclined planes on the two flanges are closely matched without any clearance; required opening clearances are arranged between the end planes of the two flanges and the corresponding end planes of the cuts. The utility model has the advantages that the sealing performance of the piston ring is good, and no air and oil leakage exist; the utility model can improve the power of the internal combustion engine, can save oil, and can prolong the service life over 1.5 times compared with the existing piston ring.

Description

Sealing type piston ring

Technical field

The accessory of using on a kind of internal combustion engine.

Technical background

Piston ring is the parts that are embedded in the internal combustion engine annular groove, and it and cylinder are slidingly matched and play seal action.The cross section of existing piston ring is a rectangle, has otch, and the end face of two otch is plane or the inclined-plane that is parallel to each other, and opened gap up to specification is arranged between the otch end face.Its defective is that otch sealing itself is bad, the leakage of oil of leaking gas easily.Along with prolonging service time, compressed gap is increasing, leaks more seriously, entire internal combustion engine power is descended, the oil consumption increase.

Summary of the invention

The purpose of this utility model provides a kind of sealing type piston ring, accomplishes both good seal performance of otch itself, has gap up to specification again.

Technological scheme is on the cross section is the piston ring one end-grain cutting mouth of rectangle the protruding kiss that cross section is a right-angled triangle to be set, have on the other end otch with the corresponding cross section of this protruding kiss be pentagonal protruding kiss, the cross section of two protruding kisses synthesizes rectangle, the i.e. no gap that closely cooperates mutually, the inclined-plane of two protruding kisses, but between relative with it the respectively otch end face of the end face of two protruding kisses gap up to specification is arranged.So, when the piston ring expanded by heating, can not cause the stuck or accident that fractures.

Compared with the prior art, the utility model has following characteristics:

1, because the inclined-plane of two protruding kisses overlaps mutually and do not have the gap, and the existence of protruding kiss makes otch be divided into inside and outside two semi cuts that stagger again, the semi cuts that staggers is blocked by protruding kiss again, so the favorable sealing property of piston ring own, the leakage of oil of can not leaking gas.

2, because therefore not wearing and tearing between the inclined-plane of two protruding kisses in the using process can be used for a long time, prolong 1.5 times or more than existing piston ring working life.

3,, therefore can improve the power of internal-combustion engine and save fuel oil because the utility model can prevent oil, gas leakage effectively.

Description of drawings

Fig. 1 is the piston ring otch stereogram with protruding kiss 1.

Fig. 2 is the piston ring otch stereogram with protruding kiss 2.

Fig. 3 is the sealing type piston ring plan view.

Fig. 4 is that the A of Fig. 3 is to view.

Fig. 5 is that the B of Fig. 3 is to view.

Embodiment

As shown in the figure, otch is arranged on the seal ring, the ring cross section is a rectangle, difference is that cross section is arranged on the end-grain cutting mouth is the protruding kiss 1 of right-angled triangle, have on the other end otch with protruding kiss 1 corresponding cross section be pentagonal protruding kiss 2, there is opened gap up to specification in the no gap that closely cooperates mutually, inclined-plane on two protruding kisses between relative with it the respectively otch end face of the end face of two protruding kisses.

What deserves to be mentioned is that the utility model also is applicable to piston type machineries such as air compressor.

Claims

1, a kind of sealing type piston ring, otch is arranged on the ring, the ring cross section is a rectangle, it is characterized in that having on the end-grain cutting mouth cross section is the protruding kiss (1) of right-angled triangle, have on the other end otch with the corresponding cross section of protruding kiss (1) be pentagonal protruding kiss (2), there is opened gap in the no gap that closely cooperates mutually, opposite slightly to the right or left on two protruding kisses between relative with it the respectively otch end face of the end face of two protruding kisses.