CN2502029Y

CN2502029Y - Piston ring

Info

Publication number: CN2502029Y
Application number: CN 01252346
Authority: CN
Inventors: 张书伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-11-02
Filing date: 2001-11-02
Publication date: 2002-07-24
Anticipated expiration: 2011-11-02

Abstract

The utility model discloses a piston ring which comprises a ring body and a ring opening which is positioned on the ring body. A lug boss is arranged on one end face of the ring opening and a notch which has a shape matching with the lug boss is positioned on the other end face of the ring opening. An occlusive ring body is formed when the ring opening is closed. The utility model has the advantages of noble structure, good leak tightness, long service life and can solve the problems of serious accumulation carbon and combustion of the lubricant of the prior internal combustion engines.

Description

A kind of piston ring

Technical field:

The utility model relates to a kind of piston ring that uses on cylinder of internal-combustion engine.

Background technique:

Early stage piston ring is flush trip ring, close up back two flush abutting against at it and become closed state together, form garden ring, the piston ring of this structure is after work a period of time, the collar extension place will produce wearing and tearing and form the gap, cause sealability to descend and produce directly gas leakage, make a big impact for the service behaviour of motor.In order to address this problem, people have invented double-deck ring again, though the piston ring of this structure can make sealability increase, but can't fundamentally solve the gas leakage problem at collar extension place, reason is also can form the gap after the collar extension wearing and tearing, after suppressing gas and rushing at annular groove bottom from a collar extension, can go out from another collar extension again and form gas leakage indirectly, because the existence of gas leakage problem, when machine works, on cylinder inner wall, will form a lubricant oil band, at high temperature, the lubricant oil burning causes exhaust smoke level to increase under the condition of high pressure, and motor is unable, also causes severe contamination to environment simultaneously.

Summary of the invention:

The purpose of this utility model provides a kind of novel structure, good seal performance, the piston ring of long service life.

The technical solution of the utility model is: a kind of piston ring, comprise ring body and the collar extension on it, on a collar extension end face, a projection is arranged, on another collar extension end face, have one with the adaptive recess of this convex shape, after two collar extension closures, form the ring body of a sealing.

Above-mentioned projection is a triangular prism, makes the cross section of this end face form a triangular facet and a pentagon face.

Above-mentioned projection is a Hexagon post, makes the cross section of this end face form two gores and a hexagonal surfaces.

Because the collar extension place closes up after plugging together by the male and female face on the end face to form the multilayer closing face together, so just can increase the surface of contact of collar extension, it is difficult for separately, after closing up each other respectively near cylinder wall, the annular groove wall prevents to suppress gas and discharges from jointing, thereby prevent that lubricant oil from entering combustion chambers burn, so just can solve the gas leakage of piston ring and the problem of burning lubricant oil, also can solve environmental pollution problems in addition.

Description of drawings:

Fig. 1 is first kind of structural representation of the utility model;

Fig. 2 is second kind of structural representation of the utility model.

Embodiment:

Embodiment 1: structure as shown in Figure 1, comprise ring body 1 and the collar extension on it, one triangle column-shaped projection 2 is arranged on a collar extension end face, make the cross section of this end face form a triangular facet 3 and a pentagon face 4, on another collar extension end face, have one with the adaptive recess 5 of these projection 2 shapes, after two collar extension closures, form the ring body of a sealing.

Embodiment 2, structure as shown in Figure 2, comprise ring body 1 and the collar extension on it, one Hexagon projection 8 is arranged on a collar extension end face, make the cross section of this

end face form

9,10 and hexagonal surfaces 11 of two gores, on another collar extension end face, have one with the adaptive recess 12 of these projection 8 shapes, form the ring body of a sealing face to face after the collar extension closure.

Claims

1, a kind of piston ring comprises the collar extension on ring body and its, it is characterized in that on a collar extension end face projection being arranged, on another collar extension end face, have one with the adaptive recess of this convex shape, after two collar extension closures, form the ring body of a sealing.

2, piston ring according to claim 1 is characterized in that, above-mentioned projection is a triangular prism, makes the cross section of this end face form a triangular facet and a pentagon face.

3, piston ring according to claim 1 is characterized in that, above-mentioned projection is a Hexagon post, makes the cross section of this end face form two gores and a hexagonal surfaces.