CN2677634Y

CN2677634Y - Full closed piston ring

Info

Publication number: CN2677634Y
Application number: CN 200420033244
Authority: CN
Inventors: 麦镇荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-10
Filing date: 2004-03-10
Publication date: 2005-02-09
Anticipated expiration: 2014-03-10

Abstract

The utility model relates to a full closed piston ring. The full closed piston ring is composed of two piston rings which are independently each other, wherein, the main ring is provided with a C-shaped ring body; the inner circumference of the ring body is provided with a skirt flap plumbed with the ring body, and the skirt flap is fixedly integrated the ring body into one unit. The secondary ring is a C-shaped ring, the secondary ring sleeve is arranged outside of the skirt flap; the inner circumference side of the secondary ring is tightly fit with the side of the outer circumference of the main ring skirt flap; the upper end surface of the secondary ring is tightly fit with the lower end surface of the main ring body; the lower end surface of the secondary ring is flushed with the lower end surface of the skirt flap of the main ring ; the size of the side at outer circumference of the secondary ring is the same with the size of the side at outer circumference of the main ring. Because of the good effect of the sealing ring, the utility model saves the fuel and machine oil, raises the dynamic force of the vehicles, and decreases the pollution discharge of the vehicles for the environmental pollution. The full closed piston ring has the advantages of simple structure, durability and stable performance.

Description

All-seal piston ring

(1) technical field:

The utility model relates to a kind of piston ring, particularly all-seal piston ring.

(2) background technique:

The piston ring that is widely used now is rounded, only leaves the C shape ring in counterpart gap at the docking port place; The cross section of this ring is rectangular, during use, single C shape ring is stuck in the piston groove gets final product.Because there is the counterpart gap in C shape ring, can not seal fully, have during use and scurry oil, gas-blowing phenomenon takes place, one side has been wasted fuel oil like this, on the other hand contaminated air again.And since sealing not exclusively, also can the loss vehicle power during work, and along with the increase of service time, seal ring and cylinder are worn and torn gradually, above-mentioned counterpart gap then can increase gradually, then engine power will weaken gradually, and oil consumption increases gradually.Simultaneously, but, destroyed the performance of machine oil, reduced the working life of lubricant oil, improved the wear rate of all parts of motor because fuel vapor is injected into engine interior by piston ring end clearance and mixes with machine oil.Machine oil enters into in-cylinder combustion by the counterpart gap in addition, forms the carbon deposit particle, gets back in the motor by high pressure gas leakage again, sneaks into and makes the machine oil blackening in the machine oil.Because the carbon deposit particle is very little, can only filter out a part, the remaining wear parts working position that is brought to again, hard carbon granule is mixed in circulation in the lubricant oil for a long time, has strengthened the machine members amount.Use above-mentioned old-fashioned C shape ring, when the wearing and tearing of ring and cylinder sleeve acquire a certain degree, increase owing to leak, ring and cylinder sleeve will not have use value, if use by force, then need to open the throttle, can cause the engine water temperature rise like this, noise increases, and because incomplete combustion, fuel oil, machine oil are discharged in the air in a large number, cause environmental pollution.Scurry the problem that oil, gas blowby cause in order to solve old-fashioned C type ring counterpart gap, someone designs the piston ring with the overlap joint mouth that staggers mutually, but this piston ring can not solve leakage problem radially on the one hand, on the other hand owing to the joining seam of taking jointing is too weak, be damaged easily in motion at a high speed and vibrations, therefore this piston ring can't be carried out always.The people is also arranged when each road installing ring, the docking port of C shape ring is staggered, in order to avoid oil, gas directly enter down the counterpart gap of encircling together from the last counterpart gap of encircling together, but each road ring rotates gradually because of vibrations in the course of the work, then occur each ring counterpart gap, road alignment phenomenon in use for some time, scurry oil this moment, gas blowby is rapid increase.

(3) summary of the invention:

The utility model will disclose a kind of simple in structure, durable, good airproof performance, and the lasting all-seal piston ring of stable performance.

The utility model is achieved in that it is made up of two piston rings independent of each other, and wherein, main ring has a C shape ring body, and the inner circumference place of ring body is provided with a shirt rim vertical with ring body, and shirt rim and ring body are fixed with one; Inner loop is one and existing old-fashioned C shape ring same structure C shape ring, and inner loop is placed in outside the shirt rim of main ring.The hole of being opened in the middle of the inner loop is identical with shirt rim excircle size, and therefore, inner loop tightly is placed in outside the shirt rim, and the excircle side of its inner circumference side and main ring shirt rim is drive fit; And the thickness of inner loop is identical with the height of shirt rim, so the upper-end surface of inner loop is close to the lower end surface of main ring ring body, and is very close to each other between the both ends of the surface, is to closely cooperate; The lower end surface of inner loop flushes with the lower end surface of main ring shirt rim, when the bottom surface that can guarantee they and piston ring groove like this compresses, can gappedly not produce; Simultaneously, the excircle side of inner loop is identical with the excircle side size of main ring ring body, is close to the casing wall inboard during work simultaneously, realizes sealing.

In order to prevent that in use main ring and inner loop slide each other, cause the counterpart gaps of two rings overlapping, preferably be provided with positioning device between the main ring of above-mentioned all-seal piston ring and the inner loop.For preventing to cause into the gap between main ring ring body end face and the inner loop end face, this positioning device preferably is located on the shirt rim and inner loop of main ring, positioning device can be to offer positioning hole on the shirt rim of main ring and inner loop, inserts in the positioning hole with locating stud then, and they are fixed; Also can be on shirt rim and inner loop, to be respectively equipped with location convex clip and notch correspondingly main ring and inner loop to be interfixed to reach.Because the shirt rim is thinner, therefore, preferably on the excircle side of shirt rim, sets the position projection, and on inner loop inner circumference side, offer the location notch that matches with it.Projection can be arranged at any orientation on the excircle side of main ring shirt rim, but preferably is arranged at and relative position, main ring counterpart gap, and just the arc round angle α from the counterpart gap to projection is preferably 180 degree.Equally, notch also can be located at any orientation on the inner loop inner circumference side, and consider and offer intensity and its tension force that notch can reduce inner loop, therefore, notch should be avoided and relative position, inner loop counterpart gap, that is to say that it is 180 degree that notch should be avoided to the arc round angle θ in inner loop counterpart gap, θ can be 0 degree＜θ≤1 50 degree, and preferably 0 degree＜θ≤30 are spent.When nearer, it is also less to the influence of inner loop tension force apart from inner loop counterpart gap for notch.

Owing to stagger mutually in the counterpart gap of main ring and inner loop, mutually with the counterpart clearance seal, and the main ring shirt rim can prevent the radial leakage of oil, gas again, so good sealing effect of this all-seal piston ring, can play and save fuel oil, machine oil, improve the effect of vehicle power, can reduce the pollution of vehicle blowdown simultaneously environment.Because the structural similarity of structure of this ring and traditional C shape ring, so it is simple in structure, stable, durable; And, can save mould during production because inner loop and traditional C shape ring are identical, and also need not to adopt new technology, new technology directly adopts tratitional technology to produce and gets final product, saved the technical innovation cost greatly.

(4) description of drawings:

Fig. 1 is the structural representation of a kind of mode of execution of the present utility model;

Fig. 2 is the main ring structural representation;

Fig. 3 is that the A-A of Fig. 2 is to cut-away view;

Fig. 4 is the structural representation of inner loop;

Fig. 5 is that the B-B of Fig. 4 is to sectional view.

(5) embodiment:

When specifically implementing the utility model, this all-seal piston ring can be shown in Fig. 1,2,3,4,5; It is made up of two separate rings, and wherein main ring 1 has a C shape ring body 1-1, and the inner circumference place of ring body 1-1 is provided with a shirt rim 1-2 vertical with ring body 1-1, and shirt rim 1-2 and ring body 1-1 are fixed with one; Inner loop 2 is a C shape ring, inner loop 2 is placed in outside the shirt rim 1-2 of main ring 1, the excircle side 1-2-1 of the inner circumference side 2-1 of inner loop 2 and main ring 1 shirt rim 1-2 is drive fit, the lower end surface 1-1-2 drive fit of the upper-end surface 2-3 of inner loop 2 and main ring 1 ring body 1-1, the lower end surface 2-4 of inner loop 2 flushes with the lower end surface 1-2-2 of main ring 1 shirt rim 1-2, and the excircle side 2-2 of inner loop 2 is identical with the excircle side 1-1-3 size of main ring 1 ring body.The shirt rim 1-2 and the inner loop 2 of main ring 1 are provided with positioning device.Positioning device is the location notch 2-5 that offers on the inner circumference side 1-2 of positioning convex 1-2-3 that is provided with on the 1-2-1 of the excircle side of the shirt rim of main ring 1 1-2 and inner loop 2.Positioning convex 1-2-3 is to arc round angle α=180 degree of main ring counterpart gap 1-3; Location notch 2-5 is to arc round angle θ=20 degree of inner loop counterpart gap 2-6.

Claims

1, all-seal piston ring, form by two piston rings independent of each other, it is characterized in that: wherein main ring (1) has a C shape ring body (1-1), and the inner circumference place of ring body (1-1) is provided with a shirt rim (1-2) vertical with ring body (1-1), and shirt rim (1-2) is fixed with one with ring body (1-1); Inner loop (2) is a C shape ring, inner loop (2) is placed in outside the shirt rim (1-2) of main ring (1), the inner circumference side (2-1) of inner loop (2) is drive fit with the excircle side (1-2-1) of main ring (1) shirt rim (1-2), lower end surface (1-1-2) drive fit of the upper-end surface (2-3) of inner loop (2) and main ring (1) ring body (1-1), the lower end surface (2-4) of inner loop (2) flushes with the lower end surface (1-2-2) of main ring (1) shirt rim (1-2); The excircle side (2-2) of inner loop (2) is identical with excircle side (1-1-3) size of main ring (1) ring body.

2, all-seal piston ring according to claim 1 is characterized in that: the shirt rim (1-2) of main ring (1) is provided with positioning device with inner loop (2).

3, all-seal piston ring according to claim 2 is characterized in that: described positioning device is the positioning hole of offering on the shirt rim of main ring (1) (1-2) and inner loop (2), is inserted with locating stud in the positioning hole.

4, all-seal piston ring according to claim 2, it is characterized in that: described positioning device is to go up positioning convex (1-2-3) that is provided with and the location notch of offering on the inner circumference side (1-2) of inner loop (2) (2-5) in the excircle side of the shirt rim of main ring (1) (1-2) (1-2-1).

5, all-seal piston ring according to claim 4 is characterized in that: described positioning convex (1-2-3) is to arc round angle α=180 degree in main ring counterpart gap (1-3); Described location notch (2-5) is 0 degree＜θ≤150 degree to the arc round angle θ in corresponding mouthful of gap (2-6) of inner loop.

6, all-seal piston ring according to claim 5 is characterized in that: 0 degree＜θ≤90 degree.

7, all-seal piston ring according to claim 6 is characterized in that: 0 degree＜θ≤30 degree.