CN201003432Y - Bidirectionally closed type piston ring - Google Patents

Abstract

The utility model discloses a two-way sealing piston ring, which comprises an up-and-down lap joint structure and a left-and-right lap joint structure, which are arranged at the opening of the ring end; the length of the up-and-down lap joint face is less than that of the left-and-right lap joint face; the up-and-down lap joint structure is arranged outside the left-and-right lap joint structure and comprises a ring outer edge line, wherein, the left-and-right lap joint structure occupies the two fifths of the width of the range between the ring inner edge line and the ring outer edge line. The utility model has the advantages of stably blocking the axial and radial gas leakage channel at the fracture of the piston ring, effectively reducing the gas leakage of the piston ring opening, increasing the power, saving oil, sufficient burning, reducing the carbon laydown and environment protection.

Description

A kind of two-way sealed piston ring

Technical field

The utility model relates to internal-combustion engine piston ring, specifically, relates to a kind of two way sealed formula of internal-combustion engine piston ring compression ring.

Background technique

At present, use more traditional combustion engine piston ring as a monocycle only is installed in the per pass annular groove, the opening mutual dislocation of multiple tracks compression ring is installed, in the work of compressed gas, gap-clearance of piston rings place exists the passage of axial gas leakage and the passage of vertical gas leakage all the time, and along with the continuing of engine operating duration, its leakage path can increase gradually, just can not use to certain limit back piston ring; The leakage path of piston ring mainly concentrates on the axial leakage path at central port place and leakage path radially.

Around the problem that reduces the main axial gas leakage in piston ring port place and radially leak gas, the employing technology mainly is to realize by the joint form that changes the place, central port at present, as the disclosed technological scheme of Chinese patent ZL94104144.1, a kind of sealed piston ring, there are bridging arrangement and left and right sides bridging arrangement up and down in ring end opening place, the length of left and right sides faying surface is more than or equal to faying surface length up and down, bridging arrangement is positioned at the outside of left and right sides bridging arrangement and comprises ring outer rim sideline up and down, two bridging arrangement fitting surfaces form closed the upright of interface that pull and push jointly, flat matching surface, effective closure the leakage path of piston ring ends opening, but because this technological scheme is not to the particular location of left and right sides bridging arrangement, thickness, shapes etc. limit, those skilled in the art generally can be with the Position Design of left and right sides bridging arrangement at the inner face of overlap joint up and down, and above 2/5 of ring body width, can cause up and down bridging arrangement too too narrow and be out of shape like this, can't axially leak gas by sealed piston ring, even because the distortion of ring outer rim, make piston ring excircle lose circle, cause bigger axial gas leakage.Along with after piston ring excircle wearing and tearing collar extension increases, its side direction leakage path and will directly run through whole ring section.

The model utility content

The technical problems to be solved in the utility model provide a kind of novel axially, two way sealed formula piston ring radially, main purpose be for more stable stop the piston ring incision position axially, leakage path radially, solve the axially gas leakage and the problem of gas leakage radially more specifically, easily.

In order to solve the problems of the technologies described above, reach more specifically, easily at piston ring ring end opening place to greatest extent block axis to radially leakage path, the utility model, a kind of two-way sealed piston ring, the bridging arrangement up and down and the left and right sides bridging arrangement that comprise ring end opening place, faying surface length is less than the length of left and right sides faying surface up and down, bridging arrangement is positioned at the outside of left and right sides bridging arrangement and comprises ring outer rim sideline up and down, wherein, left and right sides bridging arrangement is positioned at from 2/5 scope of ring inner edge sideline to ring outer rim sideline directional ring width.

Further, bridging arrangement is made of jointly two-part B1, B2, C1, the C2 of the both sides that are positioned at described left and right sides bridging arrangement up and down;

Further, faying surface length is 2～3mm less than the length of left and right sides faying surface up and down;

Further, left and right sides bridging arrangement is made up of with the seal plate 6 that is connected with one of them grooving grooving L1, the R1 on ring end opening both sides;

Further, grooving L1, the R1 on ring end opening both sides are the rectangle grooving, and seal plate 6 is corresponding rectangle;

Further, grooving L1, the R1 width difference on ring end opening both sides, seal plate 6 is installed in the little grooving of width;

Further, seal plate 6 inserts the grooving that cooperates with it and forms closed loop, and this notch width is greater than seal plate 6 thickness, and the grooving opening is cut to the horn mouth of being convenient to assemble;

Further, the thickness of seal plate 6 is less than 0.5mm.

Adopt closed upright, the flat matching surface that pulls and pushes interface of the common formation of two bridging arrangements of the such technological scheme of the utility model, because left and right sides bridging arrangement is positioned at from 2/5 scope of ring inner edge sideline to ring outer rim sideline directional ring width, can thoroughly seal its side direction gas leakage, guaranteed to comprise the width of the bridging arrangement up and down that encircles the outer rim sideline again, guaranteed that piston ring excircle does not lose circle, effective closure the leakage path of piston ring ends opening.Also maximally utilised simultaneously the manufacturing process resource of original conventional piston ring, guaranteed the stability of piston ring function, than the low cost of manufacture of biplate piston ring, and Applicable scope is extremely extensive, the constant product quality of making.Finally play the function of saving oil consumption, increase power, raising compression ratio, reducing noise, minimizing carbon distribution and environmental pollution.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:

Fig. 1 is the utility model two-way sealed piston ring embodiment 1 port schematic perspective view;

Fig. 2 is the central port plan view of Fig. 1 correspondence;

Fig. 3 is an elevation outside the central port of Fig. 1 correspondence;

Fig. 4 is the utility model two-way sealed piston ring embodiment 2 port schematic perspective views;

Fig. 5 is the utility model two-way sealed piston ring embodiment 3 port schematic perspective views;

Fig. 6 is the utility model two-way sealed piston ring embodiment 4 port schematic perspective views.

Embodiment

The concrete scheme that the utility model is taked such as Fig. 1, Fig. 2, shown in Figure 3, at first at L place, the left side of gap-clearance of piston rings, the left part that cuts out left and right sides bridging arrangement from ring inner edge sideline 4 above-below direction in 2/5 scope of encircling outer rim sideline 3 directional ring width is cut rectangle groove L1, the purpose of cutting rectangle groove is conveniently to cut, and technology is simple; Cut out the following structure of bridging arrangement up and down at ring end opening place left and right directions then, following structure is divided into B2, C2 two-part by grooving L1; Then at R place, the right of gap-clearance of piston rings, the corresponding right part that above-below direction cuts out left and right sides bridging arrangement in 2/5 scope of ring outer rim sideline 3 directional ring width from ring inner edge sideline 4 is cut rectangle groove R1, then ring end opening place left and right directions cut out bridging arrangement up and down on structure; Last structure is divided into B1, C1 two-part by grooving R1; Seal plate 6 is connected in the little grooving L1 of width, the thickness of seal plate 6 is less than 0.5mm, in order to guarantee that seal plate 6 can insert the grooving that cooperates with it smoothly and form closed loop, the R1 well width is cut into greater than seal plate (6) thickness, and the grooving opening is cut to horn mouth.In order to guarantee to use an end after the time at ring, it is big that the gap, central port becomes, and bridging arrangement and left and right sides bridging arrangement can also well cooperate and seal the central port leakage path up and down, and making faying surface length up and down usually is 2～3mm less than the length of left and right sides faying surface.

Wherein, bridging arrangement is made of jointly B1, B2, C1, C2 up and down, be used to cooperate the axial leakage path of catch ring port, grooving L1, R1 and seal plate 6 are formed left and right sides bridging arrangement, be used to cooperate the radially leakage path of catch ring port, these two bridging arrangement fitting surfaces are common to form closed upright, the flat matching surface that pulls and pushes interface, effective closure the leakage path of piston ring ends opening.

In order to maximally utilise existing mature technology and to reduce manufacture cost, can be earlier with on the ready-made cyclic group plinth with bridging arrangement up and down of former ring material system, this foundation ring has had bridging arrangement up and down, vertical leakage path that can the catch ring port, directly locate in the both sides, central port, in 2/5 scope of ring outer rim sideline directional ring width, cut out two width differences from ring inner edge sideline, the cross section is the groove L1 of rectangle, R1, the long limit of its rectangle is vertical with ring end radius, the rectangle seal plate 6 of packing in narrow groove firmly is connected with ring body, surely can weld according to preparation process, riveted joint, crimping, technologies such as joggle make seal plate 6 and the other end groove form the unobstructed left and right sides bridging arrangement that cooperates.This left and right sides bridging arrangement with its up and down bridging arrangement be divided into interior part C1, C2 and outer part B1, B2, like this ring of Xing Chenging just have the catch ring port vertically, the performance of side direction pair leakage paths.

Adopt same making method, the direction of grooving is exchanged, and promptly grooving L1 and grooving R1 are reverse, and the ring of making equally also has the performance of vertical, the two leakage paths of side direction of catch ring port as shown in Figure 4.

Comply with the difference of bridging arrangement mode up and down, as shown in Figure 5, also have same performance according to the formed ring of above-mentioned making method.

To the automobile with small output volume motorcycle as the ring below 110 discharge capacities, cylinder diameter is little, the ring body width is little, behind ring body width direction grooving, groove is during by the remaining too narrow insufficient strength of ring body of ring inner edge, interior part C1, the C2 of bridging arrangement about it all can be cut away, formed ring also has same performance as shown in Figure 6.

Along with the appearance of New Machining Technology with improve constantly, much originally seem practical that complicated structures also become.

Above-described only is preferred implementation of the present utility model.Should be pointed out that for a person skilled in the art under the prerequisite that does not break away from the utility model structure, can also make some distortion and improvement, these also should be considered as protection domain of the present utility model.

Claims (8)

1, a kind of two-way sealed piston ring, the bridging arrangement up and down and the left and right sides bridging arrangement that comprise ring end opening place, faying surface length is less than the length of left and right sides faying surface up and down, bridging arrangement is positioned at the outside of left and right sides bridging arrangement and comprises ring outer rim sideline up and down, it is characterized in that left and right sides bridging arrangement is positioned at from ring inner edge sideline (4) to 2/5 scope of ring outer rim sideline (3) directional ring width.

2, two-way sealed piston ring according to claim 1 is characterized in that, described bridging arrangement up and down constitutes by two-part (B1, B2, C1, C2) of the both sides that are positioned at described left and right sides bridging arrangement are common.

3, two-way sealed piston ring according to claim 1 is characterized in that, described faying surface length up and down is 2～3mm less than the length of left and right sides faying surface.

4, two-way sealed piston ring according to claim 1 is characterized in that, described left and right sides bridging arrangement is made up of with the seal plate (6) that is connected with one of them grooving the grooving (L1, R1) on ring end opening both sides.

5, two-way sealed piston ring according to claim 4 is characterized in that, the grooving (L1, R1) on described ring end opening both sides is the rectangle grooving, and seal plate (6) is corresponding rectangle.

6, according to claim 4 or 5 described two-way sealed piston rings, it is characterized in that, grooving (L1, R1) the width difference on described ring end opening both sides, seal plate (6) is installed in the little grooving of width.

According to claim 4 or 5 described two-way sealed piston rings, it is characterized in that 7, described seal plate (6) inserts the grooving that cooperates with it and forms closed loop, this notch width is greater than seal plate (6) thickness, and the grooving opening is cut to the horn mouth of being convenient to assemble.

According to claim 4 or 5 described two-way sealed piston rings, it is characterized in that 8, the thickness of described seal plate (6) is less than 0.5mm.

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