CN2238940Y

CN2238940Y - Double-ladder piston ring

Info

Publication number: CN2238940Y
Application number: CN 96231118
Authority: CN
Inventors: 张奎宏
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-01-18
Filing date: 1996-01-18
Publication date: 1996-10-30
Anticipated expiration: 2006-01-18

Abstract

The utility model relates to a piston ring, particularly a double-ladder piston ring which is composed of an upper layer opening piston ring and a lower layer opening piston ring. The contact surfaces of the upper layer opening piston ring and the lower layer opening piston ring are respectively provided with two ladders. The contact surfaces are horizontal planes or inclined planes. The end planes of openings of the piston ring are in the shape of the ladder, which is favorable to the reduction of the phenomenon of blowby and the enhancement of the compression performance of machines.

Description

Double-deck ladder piston ring

The utility model relates to a kind of piston ring.

Piston ring in existing internal-combustion engine, the compressor has the individual layer class piston ring of a groove one ring and the double-deck class piston ring of a groove two rings, individual layer class wear of piston-rings constantly increases the weight of, often opening can increase gradually, influence sealability, the opening dislocation of the bilayer ring of existing double-deck class piston ring is difficult to guarantee, often also can influence sealability, make the decreased performance of internal-combustion engine, compressor.

The purpose of this utility model is: a kind of design proposal of double-deck ladder piston ring is provided, makes its staggered positions that can effectively guarantee Double decker piston ring opening, have the function of compensating piston ring wearing and tearing.

The technical solution of the utility model is: double-deck ladder piston ring is combined by upper strata opening piston ring and lower floor's opening piston ring, on the surface of contact of upper strata opening piston ring and lower floor's opening piston ring two ladders is arranged respectively respectively.

The surface of contact of upper strata opening piston ring and lower floor's opening piston ring is horizontal plane or inclined-plane.Be stepped shaft on the open end of upper strata opening piston ring and lower floor's opening piston ring.

Major advantage of the present utility model is: owing on the surface of contact of upper strata opening piston ring and lower floor's opening piston ring ladder is arranged respectively, can keep the aperture position of upper strata piston ring and the aperture position of lower floor's piston ring to stagger about 180 ° or 180 °, be stepped shaft on the open end of upper strata opening piston ring and lower floor's opening piston ring, favourable minimizing blowby phenomenon improves the machine compression performance.

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1 is double-deck ladder piston ring sectional view.

Fig. 2 is lower floor's opening piston ring plan view.

Fig. 3 is a upper strata opening piston ring plan view.

Fig. 4 is a double-deck ladder inclined-plane contact piston ring.

Embodiment 1:

The bent upper strata opening piston ring 1 of double-deck ladder piston ring (see figure 1) and lower floor's opening piston ring 2 combine, 3 two of ladders (seeing Fig. 3, Fig. 2) are respectively arranged respectively on the surface of contact of upper strata opening piston ring and lower floor's opening piston ring, 4 two of ladders, surface of contact are horizontal plane.

Embodiment 2:

Double-deck ladder piston ring (see figure 4) and embodiment's 1 difference is: the surface of contact of upper strata opening piston ring and lower floor's opening piston ring is the inclined-plane.

Embodiment 3:

The difference of double-deck ladder piston ring and embodiment 1 and 2 is: be stepped shaft on the open end of upper strata opening piston ring and lower floor's opening piston ring, open end ladder 5 and 6 (seeing Fig. 2, Fig. 3) is arranged respectively.

Claims

1, double-deck ladder piston ring is characterized in that: combined by upper strata opening piston ring and lower floor's opening piston ring, on the surface of contact of upper strata opening piston ring and lower floor's opening piston ring two ladders are arranged respectively respectively.

2, according to the described double-deck ladder piston ring of claim 1, it is characterized in that: the surface of contact of upper strata opening piston ring and lower floor's opening piston ring is a horizontal plane.

3, according to the described double-deck ladder piston ring of claim 1, it is characterized in that: the surface of contact of upper strata opening piston ring and lower floor's opening piston ring is the inclined-plane.

4, according to claim 1 or 2,3 described double-deck ladder piston rings, it is characterized in that: be stepped shaft on the open end of upper strata opening piston ring and lower floor's opening piston ring.