CN2325532Y - Piston ring associated with piston crown with an overlapped connection section - Google Patents

Abstract

The utility model discloses a piston ring associated with a piston crown with an overlapped connection section, which relates to the technical field of the piston rings. One end of the ring is inwards concave, an upper ring face is downwards concave to form a flat tongue, the portion corresponding to the flat tongue on the other end is provided with an outer shoulder-shaped groove whose shape, size, orientation are matched with the flat tongue, the flat tongue is embedded into the groove to overlap and enclose a ring, an L shape is formed, both faces is stuck each other, compressed air on the overlapped opening portion is always blocked by a groove side table and the flat tongue, so air tightness of the ring body self is good, and thereby, the sealing effect and the service life can be greatly raised. The utility model can be suitable for various piston type explosive motors and air compressors, etc.

Description

Piston ring with one voice

The utility model relates to the piston ring technical field.

Piston ring is the product that can not repair, and is very big to the performance impact of piston internal-combustion engine.To be ring body surround ring with the end face butt joint ring of fracture for the piston ring of using till today, its structure, and cylindrical constantly weares and teares in the use, thereby the end clearance is constantly enlarged, and causes serious gas leakage, and working life is not long.Though novel dicyclo complementary piston ring adopts major and minor ring two ring set assembling structures, in use, along with the to-and-fro motion at inner chamber of cylinder block, two interannulars are relative displacement unavoidably also, and performance is difficult to stablize.

Piston ring designs in order to solve existing piston ring tightness technical problem bad and that working life is not long with one voice.

Piston ring is that employing ring body two ends embed outer shoulder connected in star and overlap the structure that ring surrounds annulus with flat tongue slip respectively with one voice, thereby realizes that ring body lap-joint has two faces to be " L " shape and pastes mutually, makes and takes the raising of jointing tightness; And flat tongue slides freely in groove in certain limit, when this has just guaranteed to install and use to the requirement of the flexible and elastic force of piston ring, make piston ring keep closely cooperating with inner chamber of cylinder block all the time, keep taking jointing good air-tightness energy, increase the service life.

Task of the present utility model is finished according to following technical proposals:

This ring system of piston is with one voice enclosed by ring body two ends overlap joint ring and is formed, its innovation thinking is: lack and the flat tongue of the recessed formation of upper ring surface in ring body one end, the following anchor ring of the corresponding flat tongue portion of the other end is upwards recessed, make it to constitute the outer shoulder connected in star that is complementary with flat tongue, flat tongue embeds the groove overlap joint and constitutes annulus.

This is piston ring with one voice, and the self-balancing root of the tongue is to i.e. with one voice the arc length of the arc length of tongue end, is good with the 4-5% of piston ring circumference with one voice.

The description of drawings of piston ring with one voice:

Fig. 1 is the perspective view of piston ring with one voice, and Fig. 2 is the partial view that ring body struts shape, and Fig. 3 is the ring body partial view behind flat tongue and the groove overlap joint.

Among the figure: 1, ring body; 2, flat tongue; 3, groove; 4, Bian Tai; A, splaying; B, splaying.

Piston ring with one voice is described further with embodiment below in conjunction with accompanying drawing.

This piston ring with one voice is to embed grooves 3 overlap joint rings by the flat tongue 2 at ring body 1 two ends respectively to enclose and constitute shown in Fig. 1,2 and 3.Flat tongue 2 is by lacking in ring body 1 one ends and upper ring surface is recessed constitutes, and the bottom surface of flat tongue 2 is extensions of 1 time anchor ring of ring body, and its outer is a part of arc of the cylindrical that surrounds of ring body 1 ring.The radial thickness of flat tongue 2 is the 1/2----3/4 of ring body 1 radial thickness, its height dissimilar and different because of piston ring, generally get ring body 1 outer and cylinder wall sticking part branch highly about 1/2 for well.The bottom surface of flat tongue 2 and the intersection of end face, or the intersection of inboard cambered surface and end face, or the intersection of bottom surface and inboard cambered surface can be angle rib shapes, also can be circular-arc, decide on processing conditions.The root of the tongue of flat tongue 2 is to i.e. with one voice the arc length of the arc length of tongue end, for the 4-5% of the whole circumference of piston ring with one voice for well.Groove 3 is that the other end at ring body 1 is corresponding to flat tongue 2 places, following anchor ring is upwards recessed, constitutes outer shoulder connected in star, and its shape, size, orientation and flat tongue 2 are complementary, after making flat tongue 2 embed groove 3, whole ring body becomes smooth, a uniform piston annulus of applying.

The applicable cases of piston ring is with one voice:

With piston ring with one voice from locating to strut in the circular groove that is set in piston with one voice, with upper ring surface facing to pressurized gas.Implement in the compression stroke at piston, along with the continuous wearing and tearing of ring cylindrical, piston ring relies on the special construction of the outer shoulder connected in star of tension force peace tongue embedding of self with one voice, remains with inboard wall of cylinder block to fit tightly.When the splaying constantly increased, the gap A in flat tongue end was blocked by the limit platform of groove, and pressurized gas must not stop by the limit platform and leaked; B is blocked by flat tongue in the gap of groove end, and pressurized gas must not stop by flat tongue and leaked, thereby reaches the tightness that improves piston ring and prolong the piston ring technique effect in working life.

The utility model compared with prior art, its advantage is:

Owing to adopt the ring body two ends to embed the structure that outer shoulder connected in star overlap joint ring surrounds annulus with flat tongue, make ring body Two ends are overlapped with two binding faces of " L " shape, when progressively increasing in the splaying, and the two places splaying branch of overlap joint mouth Not not fluted limit platform peace tongue blocks, so in use, piston ring remains good air-tightness, from And greatly improved the sealing effectiveness of piston ring and prolonged the service life of piston ring, and then improved and started The mechanical effect of machine, reduce fuel oil consumption, environmental contamination reduction reduces production costs, and has significant technology Economic benefit and social benefit.

Piston ring can be used for various piston internal-combustion engines and the air compressor machines such as automobile, tractor, motor-car with one voice Deng.

Claims (2)

1, a kind of ring by ring body two ends overlap joint enclosed the piston ring with one voice that forms, it is characterized in that: lack and the flat tongue of the recessed formation of upper ring surface in ring body one end, the corresponding flat tongue of anchor ring place is provided with the outer shoulder connected in star that is complementary with flat tongue under the other end, and flat tongue is embedded in the groove overlap joint and constitutes annulus.

2, the described piston ring with one voice of a kind of claim 1, the root of the tongue that it is characterized in that the self-balancing tongue to the arc length of tongue end promptly with one voice arc length be the 4-5% of piston ring circumference with one voice.

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