CN2361850Y

CN2361850Y - Overlap type piston ring

Info

Publication number: CN2361850Y
Application number: CN 99219554
Authority: CN
Inventors: 刘艳玲
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-01-12
Filing date: 1999-01-12
Publication date: 2000-02-02
Anticipated expiration: 2009-01-12

Abstract

The utility model relates to a overlap formula piston ring. It has solved present piston ring and has had the opening in the disconnection department, influences sealed problem. It features that one broken end is a step surface on one end of one side ring and the other broken end is a step surface on the other end of the other side ring, at least after the piston is installed in cylinder, the two circumferential planes on the two step surfaces are overlapped and there is an opening between the broken surface of each broken end of piston ring and the axial vertical surface on the step surface of the other broken end. The piston ring can be used on the pistons of various new and old internal combustion engines.

Description

The fibulae type piston ring

The utility model relates to a kind of piston component of combustion engine, particularly a kind of fibulae type piston ring.

Piston ring is the sealing that is used for strengthening piston, improves the efficient of motor.Piston ring is an annulus that circumferentially disconnects, and leaves opening between two cleaved facets.This is in the course of the work, the diameter of piston ring is changed to some extent, in case the cylinder that rises damages motor with variation of temperature.But this opening has also reduced the sealing of piston ring, and the motor oil consumption is increased, and efficient reduces.

The purpose of this utility model provides a kind of circumferential disconnection, and diameter can change to some extent, the piston ring of favorable sealing property.

The technical solution of the utility model is, it is an annulus that circumferentially disconnects, its feature be its open end on a side ring end face, be a step surface, its another open end also is a step surface on another side ring end face; At least behind installing piston into cylinder, two circumferential plane on these two step surfaces overlap, and between the axial facade on the cleaved facet of each open end of piston ring and another open end step surface opening are arranged all.

In the utility model, because piston ring also is circumferentially to disconnect, and the overlap joint of the circumferential plane on two open end step surfaces, between the axial facade on each open end cleaved facet and another open end step surface opening is arranged all, so the length of overlap joint can change, therefore it can be the same with present piston ring, and diameter can change, in case the cylinder that rises.Circumferential plane owing to two open end steps overlaps again, thus there is not the opening that axially communicates on this piston ring circumference, so its sealing is fabulous, thus reduced fuel consumption, improved the efficient of motor.In addition, because there is not the opening that axially communicates in it, thus behind the general boring cylinder, rering more, this piston ring can be used on the piston of various new and old internal-combustion engines, is used in particular for significantly reducing gas leakage on the low speed internal-combustion engine, and effect is more obvious.

Accompanying drawing 1 is a plan view of the present utility model;

Accompanying drawing 2 is that K of the present utility model is to enlarged view;

Accompanying drawing 3 is that the K of the utility model after piston is put into cylinder is to enlarged view.

Below in conjunction with accompanying drawing the utility model is described in detail.

As can be seen from Figure 1, this piston ring is the annulus that circumferentially disconnects.2 find out in conjunction with the accompanying drawings, and its open end is a step surface on piston ring one side end face, and another open end also is a step surface on the opposite side end face of ring.The thickness that the shoulder height sum of these two step surfaces equals to encircle, i.e. h1+h2=H.Behind installing piston into cylinder, as shown in Figure 3.At this moment the circumferential plane 1 and 2 of two step surfaces overlaps, and between the axial facade 4 of an end cleaved facet 3 and the other end step surface opening is arranged, and between the axial facade 6 of the other end cleaved facet 5 and this end step surface opening is arranged also.So when operating temperature changes, can slide between the circumferential plane 1 and 2, lap length changes, thereby the piston ring vary in diameter prevents the cylinder that rises.Two circumferential plane 1 and 2 circumferential lengths can be determined according to the scope that the piston ring diameter may change.

Claims

1, a kind of fibulae type piston ring, it is an annulus that circumferentially disconnects, and an open end that it is characterized in that it is a step surface on a side ring end face, and its another open end also is a step surface on another side ring end face; At least behind installing piston into cylinder, two circumferential plane on these two step surfaces overlap, and between the axial facade on the cleaved facet of each open end of piston ring and another open end step surface opening are arranged all.

2, fibulae type piston ring according to claim 1 is characterized in that the thickness that the shoulder height sum of two step surfaces equals to encircle.