CN202483744U

CN202483744U - Novel piston ring

Info

Publication number: CN202483744U
Application number: CN2012200979564U
Authority: CN
Inventors: 张明轩
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-13
Filing date: 2012-03-13
Publication date: 2012-10-10
Anticipated expiration: 2022-03-13

Abstract

The utility model discloses a novel piston ring which comprises an outer ring and an inner ring. Longitudinal section of periphery of the outer ring is in a right-angled shape. Longitudinal section of periphery of the inner ring is in close fit with the inner right angle of the longitudinal section of the periphery of the outer ring. An opening of the outer ring is sleeved onto an opening of the inner ring by mutually staggering 180 degrees. The novel piston ring is simple in structure and reasonable in design. Due to the fact that the opening of the outer ring is sleeved onto the opening of the inner ring by mutually staggering 180 degrees, the outer ring is in close fit with inner ring. By the novel piston ring, the technical problem of poor sealing in the prior art is solved.

Description

A kind of novel piston ring

Technical field the utility model belongs to the piston ring technical field, is specifically related to a kind of novel piston ring.

In the background technique existing technology; The Combination application of piston ring and piston; In current internal-combustion engine and air compressor, be widely used; Society's owning amount is very big, remains the main structure form of internal-combustion engine in foreseeable future, and the sealability that therefore further improves piston ring has very big realistic meaning; Western developed country is also carrying out positive research and input at the material and the process aspect of piston ring for this reason, has obtained gratifying achievement at the aspects such as wear resistance that improve piston ring, and has obtained using widely.Can only prolong the working life of piston ring with present mentality of designing; Can't thoroughly solve the gas leakage problem of piston ring; Because it is inevitable that piston ring weares and teares in the course of the work; No matter therefore how the material and the technology of piston ring are improved, the counterpart gap of ring is increasing all the time gradually, breaks through so must seek from the structure of ring.The piston ring that uses at present is to be used for slit between packed-piston and the cylinder, thereby makes cylinder keep sealing, prevents high temperature, high pressure gas leakage in the cylinder; But piston ring itself has a docking port, and after piston ring is loaded into piston, along with piston to-and-fro motion in cylinder together, can cause wear of piston-rings, makes the sealing of piston ring reduce, and causes the phenomenon of leakage of oil, gas leakage to occur.

The purpose of summary of the invention the utility model is to solve the technical problem that there is the sealing difference in existing technology, a kind of novel piston ring is provided, to overcome the deficiency of existing technology.

To achieve these goals, a kind of novel piston ring of the utility model, its main points are that it comprises outer shroud and interior ring; The rectangular shape in peripheral longitudinal section of said outer shroud; Corresponding the fitting tightly in interior right angle of the peripheral longitudinal section of the peripheral longitudinal section of ring and outer shroud in said; The opening of said outer shroud and interior ring stagger each other 180 the degree suits.

The utility model is simple in structure, reasonable in design, because inner ring sleeve is contained in the outer shroud, and the opening of outer shroud and the interior ring 180 degree suits that stagger each other, make outer shroud fit tightly and be in the same place with interior ring.The utility model has solved the technical problem that there is the sealing difference in existing technology.

Description of drawings Fig. 1 is the utility model structural representation;

Fig. 2 is that the A-A of Fig. 1 is to sectional view.

Among the figure 1, outer shroud 2, interior ring

Embodiment is according to Fig. 1 and Fig. 2, and it comprises outer shroud 1 and interior ring 2 the utility model; The rectangular shape in peripheral longitudinal section of said outer shroud 1; Corresponding the fitting tightly in interior right angle of the peripheral longitudinal section of the peripheral longitudinal section of ring 2 and outer shroud in said; The opening of said outer shroud 1 and the interior ring 2 180 degree suits that stagger each other.

The outer shroud of the utility model and interior ring are formed a letter ring, and during assembling, the opening of outer shroud and the opening of interior ring stagger and 180 spend.Working procedure (naturally aspirated engine) can be divided into two states, promptly is respectively malleation (compression, acting and exhaust) and negative pressure (air-breathing) in the cylinder; Supercharged engine does not have negative pressure state; When being malleation in the cylinder, lower surface and cylinder wall that pressure is pressed to piston ring groove with piston ring form mechanical seal, at the opening of outer shroud because the existence of interior ring, thereby and form by self elastic force and to seal; At the opening of interior ring because thereby the existence of outer shroud forms seals.When being negative pressure in the cylinder; Because the assembled state of outer shroud and interior ring, determined the trend that gas will get into cylinder through the curve slit of outer shroud and interior ring by crankcase, but because the natural elasticity of two rings and the thermal distortion that produces owing to the nonsymmetry of outer shroud; Thereby outer shroud is fitted tightly with interior ring is in the same place; Can't piston ring axially on produce displacement, reach seal action, also eliminated the phenomenon of piston ring pump oil in cylinder simultaneously.

The structural feature of the utility model has determined its sealing effect can not change with the wearing and tearing of piston ring and cylinder sleeve, is suitable for second and third road compression ring.

Claims

1. a novel piston ring is characterized in that it comprises outer shroud and interior ring; The rectangular shape in peripheral longitudinal section of said outer shroud; Corresponding the fitting tightly in interior right angle of the peripheral longitudinal section of the peripheral longitudinal section of ring and outer shroud in said; The opening of said outer shroud and interior ring stagger each other 180 the degree suits.