CN2584846Y

CN2584846Y - Piston ring with closed device for open

Info

Publication number: CN2584846Y
Application number: CN 02281434
Authority: CN
Inventors: 张绍忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-11-28
Filing date: 2002-11-28
Publication date: 2003-11-05
Anticipated expiration: 2012-11-28

Abstract

The utility model provides a piston ring which is arranged between an automobile engine and an air cylinder to perform a sealing function, particularly a piston ring with a brake seal for an opening. The utility model needs to solve the technical problem that after a common piston ring is used for a period of time, a ring mouth is enlarged due to the abrasion of a cylinder sleeve and the piston ring; besides, elasticity is reduced, the ring mouth can not be closed, and then, the phenomenon of loose sealing occurs. The utility model has the technical scheme that both ends of the ring mouth of the utility model are provided with step structures which mutually compensate; simultaneously, both ends are respectively provided with a brake sealing slot in a direction which is perpendicular to step surfaces and a brake sheet is inserted in the brake sealing slot. After the ring mouth of the piston ring is provided with the step structures and the brake sealing structures which mutually compensate, the utility model not only solves the problem of circuitous air leakage of the piston ring, but also enables the ring mouth of the piston ring to be not easy to disengage; therefore, the utility model has the advantages of favorable sealing effect, extended service life, fuel oil saving and reduced exhaust emission and is suitable for the automobile engine.

Description

The piston ring of mouth-furled and gate-closed

[technical field]

The utility model relates to a kind of piston ring that seals between piston on the motor car engine and the cylinder that is arranged on.

[background technique]

Piston ring is very crucial parts on the motor, and it is arranged between motor car engine piston and the cylinder, seals.If poorly sealed, will cause the cylinder pressure deficiency, reduce engine power, it is insufficient to burn, over-emitting black exhaust.Present piston ring has a collar extension, when engine operation, and piston ring expanded by heating, collar extension closure.But with after having spent a period of time, along with cylinder liner and wear of piston-rings, collar extension increases, and flexibility decrease, and collar extension can not be closed, poorly sealed phenomenon occurs.

[summary of the invention]

The purpose of this utility model is to provide a kind of piston ring that can avoid the mouth-furled and gate-closed of above-mentioned deficiency.

The purpose of this utility model is achieved in that it has piston ring, is characterized in that: the two ends at its collar extension place are the ledge structure of compensation each other, and a lock sealing groove with the perpendicular direction of step surface is also respectively arranged on two ends simultaneously, and brake lining is inserted in the lock sealing groove.The lock seal structure has solved the problem of the circuitous gas leakage of piston ring, and the collar extension of piston ring has adopted the ledge structure of compensation each other, makes the collar extension of this piston be difficult for throwing off, and has prolonged the working life of piston ring, realizes the long-time sealing between piston and the cylinder.

The utility model compared with prior art, because after the collar extension of piston ring has adopted the ledge structure and lock seal structure that compensates each other, not only solved the problem of the circuitous gas leakage of piston ring, also make the collar extension of this piston be difficult for throwing off, can reach good sealing effect, prolong working life, saved fuel oil, reduced toxic emission.

[description of drawings]

Further specify the utility model below in conjunction with accompanying drawing.

Fig. 1 is the schematic representation of a kind of structure of the utility model.

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

[embodiment]

Embodiment one:

Referring to Fig. 1, the two ends at the collar extension place of piston ring are the ledge structure 1 that compensates each other, and this step surface and parallel to an axis also respectively have a radially lock sealing groove simultaneously on two ends, and brake lining 2 is inserted in the lock sealing groove.

Embodiment two:

Referring to Fig. 2, the two ends at the collar extension place of piston ring are the ledge structure 1 that compensates each other, and this step surface and radial parallel also respectively have an axial lock sealing groove simultaneously on two ends, and brake lining 2 is inserted in the lock sealing groove.

Because after the collar extension of piston ring has adopted the ledge structure and lock seal structure that compensates each other, not only solved the problem of the circuitous gas leakage of piston ring, also make the collar extension of this piston be difficult for throwing off, prolong the working life of piston ring, realize the long-time sealing between piston and the cylinder.

Claims

1, a kind of piston ring of mouth-furled and gate-closed, it has piston ring, it is characterized in that: the two ends at its collar extension place are the ledge structure of compensation each other, and a lock sealing groove with the perpendicular direction of step surface is also respectively arranged on two ends simultaneously, brake lining is inserted in the lock sealing groove.

2, according to the piston ring of the described mouth-furled and gate-closed of claim 1, it is characterized in that: the ledge structure of the two ends at the collar extension place of piston ring for compensating each other, this step surface and parallel to an axis also respectively have a radially lock sealing groove simultaneously on two ends, brake lining is inserted in the lock sealing groove.

3, according to the piston ring of the described mouth-furled and gate-closed of claim 1, it is characterized in that: the ledge structure of the two ends at the collar extension place of piston ring for compensating each other, this step surface and radial parallel also respectively have an axial lock sealing groove simultaneously on two ends, brake lining is inserted in the lock sealing groove.