CN2407142Y

CN2407142Y - Assembled piston rings

Info

Publication number: CN2407142Y
Application number: CN 00229278
Authority: CN
Inventors: 吴湘洋
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-02-20
Filing date: 2000-02-20
Publication date: 2000-11-22
Anticipated expiration: 2010-02-20

Abstract

The utility model relates to a combined piston ring which is characterized in that the combined piston ring is formed by folding an upper and a lower opening rings (1) and (3), the folding faces of the upper and the lower opening rings (1) and (3) are respectively provided with a boss (4) matched with an opening distance, and a lower part ring surface (2) on an outer ring surface of the upper opening ring (1) is a conical ring surface structure. Not only can misplacement superposition and even tension of the two opening rings be effectively ensured by the utility model, but also lubricated conditions can be effectively improved. Service life of a piston ring is prolonged, and purpose of ensuring stable work efficiency of an engine is further obtained.

Description

Compound piston ring

The utility model relates to a kind of piston ring, relates to a kind of compound piston ring specifically.

Piston ring in the existing internal-combustion engine mostly is the individual layer opening piston ring of a groove one ring, and the double-deck class opening piston ring of an a spot of groove two rings is also arranged.Because piston ring---particularly piston ring for combustion engines is to be under high temperature, the hyperbaric environment, to work under the operating mode of high-speed motion and lubricated difficulty all the time, the existing tension force inequality of trip ring itself in addition, therefore very easily be worn, especially easily cause eccentric wear to decrease situation, cause seal failure, even damage parts.And existing double-deck class opening piston ring is also many because of the opening dislocation is difficult to guarantee, and influences its sealability, makes the engine operation decrease in efficiency.

The purpose of this utility model provides a kind of and guarantees that two trip rings dislocation is stacked with regard to being to overcome above-mentioned deficiency of the prior art, even tension, long service life, and can improve the compound piston ring of its lubricating condition relatively.

The purpose of this utility model can adopt following measure to realize:

Compound piston ring of the present utility model is to be formed by stacking by upper and lower two trip rings, respectively be provided with a boss that matches with the opening distance on the superposed surfaces of upper and lower two trip rings, and the bottom anchor ring of its upper shed ring outer ring surface is a conical ring face structure.

In the utility model on upper and lower two trip rings set boss all be positioned on the anchor ring with the corresponding side of this ring opening.

Because the utility model not only adopts the combination of boss and opening tabling to go up, two rings carry out superimposed down, and one trapped fuel annular groove is set (this trapped fuel annular groove is that the upper ring surface by basifacial conical ring face of upper shed ring outer shroud and the under shed ring that is superimposed with it constitutes at the be superimposed outer ring surface places of face of two rings, certainly this trapped fuel annular groove also can adopt other mode of structure to realize: be processed into conical ring face structure as the top anchor ring with the outer ring surface of under shed ring, or the outer ring surface bottom anchor ring of upper shed ring is processed into conical ring face structure, and the outer ring surface top anchor ring of under shed ring also is processed into conical ring face structure, make two corresponding conical ring faces constitute the trapped fuel annular groove jointly), can guarantee effectively not only that so the dislocation of two trip rings is stacked, even tension, and can effectively improve its lubricating condition, prolong the working life of piston ring, and then reach the purpose of guaranteeing the engine operation stabilised efficiency.

The drawing of accompanying drawing is described as follows:

Fig. 1 is a plan view of the present utility model.

Fig. 2 is the side view of Fig. 1.

Fig. 3 is the worm's eye view of upper shed ring among Fig. 1.

The utility model is done with detailed description below with reference to embodiment's (accompanying drawing):

As shown in the figure, compound piston ring of the present utility model is to be formed by stacking by upper and lower two trip rings (1) (3), on the superposed surfaces of upper and lower two trip rings (1) (3), respectively be provided with a boss (4) that matches with the opening distance, described boss (4) all is positioned on the anchor ring with the corresponding side of this ring opening (5), and the bottom anchor ring (2) of its upper shed ring (1) outer ring surface is a conical ring face structure.

Claims

1, a kind of compound piston ring, it is characterized in that: described piston ring is to be formed by stacking by upper and lower two trip rings (1) (3), on the superposed surfaces of upper and lower two trip rings (1) (3), respectively be provided with a boss (4) that matches with the opening distance, and the bottom anchor ring (2) of its upper shed ring (1) outer ring surface is a conical ring face structure.

2, compound piston ring according to claim 1 is characterized in that: upper and lower two trip rings (1) (3) are gone up set boss (4) and all are positioned on the anchor ring with the corresponding side of this ring opening (5).