CN2616698Y - Piston ring for cylinder - Google Patents

Abstract

The utility model relates to a piston ring for cylinder, which comprises a circular matrix and an opening which is positioned on the circular matrix and vertical to the center. The utility model is characterized in that an upper matrix and a lower matrix are arranged at the opening of the circular matrix; the circular matrix is formed into an integration without opening by overlapping the upper and lower matrix so that the compression force of the cylinder is ensured, the work efficiency is improved and the service life is extended.

Description

A kind of piston ring of cylinder

Affiliated technical field

The utility model belongs to a kind of piston ring of cylinder

Background technique

In the piston internal-combustion engine technical field, piston ring is to guarantee piston and cylinder wall sealing, promotes the compressive force of cylinder, the requisite annex of reduction oil consumption and discharging this.This piston ring comprises the matrix of a ring-type, and an opening perpendicular to the center is arranged in certain of ring-type matrix.Existing technology all is to utilize the resilient characteristic of piston ring itself to improve adhesion to cylinder wall.Should be understood that this adhesion is to be directly proportional with the friction of cylinder wall with piston ring, that is to say that adhesion is big more, cylinder wall and wear of piston-rings are big more, and vice versa.Can imagine, the conference that adds of wearing and tearing makes on the piston ring opening perpendicular to the center also increase, the increase of this opening can produce gas blowby on the one hand in cylinder, just compressed air from pistons end by Open Side Down seepage, the lubricant oil that makes the piston lower curtate on the other hand is by the opening seepage that makes progress, this seepage between mutually can cause the compressive force in the cylinder to descend, and causes that burning is insufficient, the decline of power output.Then a kind of meeting causes discharging severe exacerbation.For this reason, engineers and technicians have designed a kind of piston ring of low-tension, thereby the wearing and tearing of piston ring and cylinder surface are effectively descended, thereby prolong the working life of motor.But the low-tension piston ring need expect with special spy to make, processing difficulties, and therefore the cost costliness is difficult to large-scale popularization.

Summary of the invention

The purpose of this utility model just provides a kind of high leak tightness, long-life cylinder piston ring.

The technological scheme that the utility model provides is: matrix and a lower substrate on one of the open design of piston ring ring-type matrix.Above-mentioned matrix juxtaposition together, its end face overlaps.So no matter piston ring scuffing can not form any opening to which kind of degree on the ring-type matrix, thereby has ensured compressive force and working life thereof in the cylinder.

The utility model is owing to designed matrix and lower substrate on one on the ring-type matrix of piston ring, make piston ring form an astomous integral body by two matrix juxtapositions, the overall tightness and the working life of piston ring have been improved, can be widely used in to produce huge social and economic benefit on various piston internal-combustion engines and the various piston type air compressor.

Description of drawings

Accompanying drawing A is a whole plan view of the present utility model

Accompanying drawing B is a local amplification view of the present utility model

Specific embodiment

Describe concrete implementation detail of the present utility model in detail with regard to above-mentioned accompanying drawing below, the utility model comprises a ring-type matrix (1), has wherein designed one at ring-type matrix (1) opening and has gone up a matrix (2) and a lower substrate (3).Accompanying drawing A is a whole plan view of the present utility model, and accompanying drawing B is a local amplification view of the present utility model.On accompanying drawing B, can see, the last matrix (2) of ring-type matrix (1) and lower substrate (3) juxtaposition are together, two end face overlaps, form an astomous overall structure, which kind of state no matter the piston ring of this structure may wear to, all can not go up and form opening, thereby ensure the compressive force in the cylinder, thereby improve working efficiency and working life thereof at ring-type matrix (1).

Claims (2)

1, a kind of piston ring of cylinder comprises a ring-type matrix, and an opening perpendicular to the center is arranged in certain of ring-type matrix, it is characterized in that: the opening at ring-type matrix (1) has designed matrix on (2) and lower substrate (3).

2, according to the piston ring of the described a kind of cylinder of claim (1), it is characterized in that: the last matrix (2) of ring-type matrix (1) and lower substrate (3) juxtaposition are together.