CN2797658Y - Piston ring with joint having axial and radial sealing surface - Google Patents

Abstract

The utility model provides a piston ring with an interface having axial and radial sealing surfaces, which comprises a piston ring body. The abutting end of the ring body is formed into axial and radical step end surfaces which are matched with each other and formed into an axial sealing contact end surface and a radical sealing contact end surface of an interface end. The utility model adopts an interface structure of the step end surfaces which are matched with each other in the axial and the radical directions, and the axial sealing contact end surface and the radical sealing contact end surface of the interface end are formed by the matched step end surfaces. Therefore, the leakage of the piston ring, which possibly occurs in the two directions, is solved effectively. As the two matched contact sealing surfaces are not affected by the diameter abrasion of the piston ring and a cylinder, the problems of oil leakage and gas leakage caused by the loose seal of the piston ring because of abrasion can be solved fundamentally. The piston ring which has the characteristics of simple structure, easy fabrication and reliable seal can effectively improve the work efficiency and the service life of an engine.

Description

Interface has axially and the piston ring of radial sealing surfaces

Technical field

The utility model relates to a kind of interface to have axially and the piston ring of radial sealing surfaces.

Background technique

The quality of piston ring packing directly has influence on the work effect of motor.And the existing piston ring adopts the end face mating interface mostly, in the process of using along with the wearing and tearing of piston ring radial dimension and cylinder bore, the piston ring joint gap is increased, cause bad sealing in the Piston Compression process, leak air, leakage of oil, cause engine power to descend, fuel consumption increases; Simultaneously, the breakage and the oil of lubricant oil also can change in the crankcase, increase machine members, reduce the working life of motor.For solving the problem that existing piston ring ends exists in the face of connection interface, prior art discloses the piston ring of several employing overlap joint interfaces, by changing the interface gap structure, the sealing effect of piston ring is improved, but because its interface still exists the butt joint slit, thereby can not fundamentally solve the problem that leakage takes place piston ring joint.In addition, the disclosed concavo-convex chimeric interface shape of prior art exists butt joint end face complex structure, the problem of processing difficulties.

Summary of the invention

The purpose of this utility model is at the problems referred to above, provides a kind of simple in structure, and sealing is reliable, and the interface that can effectively improve engine operation efficient and working life has axially and the piston ring of radial sealing surfaces.

The technological scheme that realizes above-mentioned purpose is: the axially and radially ladder end face that a kind of piston ring, the butt end of its piston ring body are arranged to match, and form the sealing contact axial end of interface end and seal and contact radial end face.

The technical solution of the utility model also comprises: described sealing contact radial end face is an arc shaped surface.

The utility model adopts the ladder end face interface structure that matches mutually with both direction radially axially, and the axial end contact seal face and the radial end face contact seal face of interface end are formed in the cooperation of passing through the ladder end face, may be and effectively solve piston ring by the leakage of both direction generation, and, thereby fundamentally solve the problem that leakage of oil, gas leakage sternly do not appear in the piston ring packing that takes place owing to wearing and tearing because the cooperation of two contact seal faces is not subjected to the influence of piston ring and cylinder bore wearing and tearing.Have simple in structure, be convenient to processing, the reliable sealing characteristics.Can effectively improve efficiency of engine and working life.

Description of drawings

Fig. 1 is this piston ring overall structure schematic representation;

Fig. 2 is the interface end face structural representation of Fig. 1.

Embodiment

In conjunction with the accompanying drawings embodiment of the present utility model is described:

As accompanying drawing embodiment, this piston ring includes piston ring body 1, the axially and radially ladder end face that the butt end of its piston ring body is arranged to match, and form the sealing contact axial end 2 of interface end and seal and contact radial end face 3.

Contact end face 2 of the present utility model and 3 can be arranged to the plane, and when considering piston in use external diameter changing, radial end face 3 has contact seal performance more reliably, sealing contact radial end face 3 can be arranged to arc shaped surface.

Claims (2)

1, a kind of interface has axially and the piston ring of radial sealing surfaces, include piston ring body (1), it is characterized in that: the axially and radially ladder end face that the butt end of piston ring body (1) is arranged to match, and form the sealing contact axial end (2) of interface end and seal and contact radial end face (3).

2, interface according to claim 1 has axially and the piston ring of radial sealing surfaces, it is characterized in that: described sealing contact radial end face (3) is arc shaped surface.

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