CN2628813Y

CN2628813Y - Piston ring with complementary function

Info

Publication number: CN2628813Y
Application number: CN 03233164
Authority: CN
Inventors: 韩久和
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-02-09
Filing date: 2003-02-09
Publication date: 2004-07-28
Anticipated expiration: 2013-02-09

Abstract

The utility model relates to a function complementation piston ring, which includes a ring and a lap joint on the ring. The ring is consisted of two or above two subrings along the axial and the thickness direction; the two-dimensionally convex-concave lap joints interfaces are arranged at the lapped joint of the subrings; when various subrings are compound, the lapped joints stagger for a certain distance mutually along the circumference direction, and form three-dimensional convex-concave interfaces rings lamination. The distance the subring convex-concave interfaces staggering along the circumference direction is equal to the ridge length on the subring convex-concave interfaces. Because this piston ring is made by the bonds of the multi-layered subrings, in the process of manufacturing, the ring can be compounded after the finish of the subrings, and because the convex-concave interfaces of the various subrings are two-dimensional, the convex or concave can be made easily by pressing or other approaches conforming to the request; the convex-concave interfaces of the subrings are staggered and fixed between the subrings, thus form a three-dimensional interface. The piston ring is simply structured and is convenient for installment and manufacture, and the cost is low, moreover, the piston ring has very good sealing performance and long service life.

Description

Piston ring has complementary functions

(1) technical field:

The utility model relates to a kind of piston ring, particularly a kind of piston ring that has complementary functions.

(2) background technique:

In order to prevent to leak, the mouth of taking of piston ring of having complementary functions is all made the tieing of taking of projection and notch, the overlap joint mouth opens automatically after the excircle of piston ring is worn, but because the projection of two end lap joints still overlaps mutually, therefore, piston ring still is in sealing state, good, the long service life of the piston ring packing performance of this structure.In order to prevent axial leakage, above-mentioned piston ring is established projection and notch at the thickness direction that axially is piston ring, in order to prevent radial leakage, is that the width direction of piston ring is established projection and notch in radial direction then; But because the width and the thickness of piston ring are limited, to on so promptly thin narrow again piston ring, install satisfactory projection and notch is very difficult, as can't mill out the right angle notch at all with milling cutter, in order to address the above problem, also there is the people only to be provided with the overlapping use of piston ring of projection and notch more than two or two in radial direction, and the mouth of taking of two rings staggers 180 ℃ to prevent axial gas leakage during overlapping the storing, the sealing when piston ring does not have wearing and tearing of this method is better, but after wearing and tearing occurring, slide relative can take place in the two-piston ring, thereby makes the two-piston ring take salty folded leaking air.And, follow the string easily after being heated and shortened working life because each ring ring body is very thin.

(3) model utility content:

Even the utility model will disclose mouthful complicated piston ring processed of also being easy to of a kind of overlap joint.

Originally piston ring has complementary functions, comprise the lap joint of offering on ring body and the ring body, institute is no to be: described ring body is connected each other by two or more subrings and forms, lap joint place of subring offers two-dimentional convex-concave overlap joint mouth, each its lap joint of subring compound tense certain distance that along the circumferential direction staggers mutually forms three-dimensional convex-concave overlap joint mouthful.

Described ring body vertically, be the thickness direction layering, the two-dimentional convex-concave overlap joint of each subring mouthful offer direction for radially and circumferencial direction; The distance that convex-concave overlap joint mouth between subring along the circumferential direction staggers equals the length of the projection of subring convex-concave overlap joint mouth.

The double-edged subring of described ring body is identical, but one just, one instead be fixed on the ring body two sides, form the tow sides top layer and encircle identical piston ring.

The structure of each subring of described composition ring body is all identical.

The subring compound tense that each is identical has at least the positive and negative of a subring opposite with other subring.

Arrange compound with an order of positive one anti-phase between the subring.

The centre of the convex-concave of described subring overlap joint mouthful is provided with a tongue shape projection that along the circumferential direction stretches out forward, the both sides of tongue shape projection be width equate along the circumferential direction after the identical notch of degree of stretching that contracts; And the centre of another convex-concave overlap joint mouthful offers a notch with tongue shape projection coupling, and the both sides of notch are the boss that the notch with tongue shape projection both sides mates.

Because ring body is composited by multi-layer subring, add after earlier each subring being processed man-hour compound again, and the convex-concave of each subring overlap joint mouth is two dimension, modes such as available punching press promptly can be made into satisfactory projection or concane gap very easily, be connected after as required convex-concave overlap joint mouth being staggered between the subring, thereby form three-dimensional overlap joint mouthful.This piston ring structure is simple, installation, easily manufactured, with low cost, and this novel piston ring good seal performance, and long service life, because the ring body after compound synthesizing is thicker, not yielding under the high temperature, long-time use still can keep better elastic under the high temperature.

(4) description of drawings:

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

Fig. 2 is the structural representation of the identical the utility model mode of execution in positive and negative.

(5) embodiment:

When implementing the utility model, ring body 1 can be connected by two-layer or two-layer above subring 2 and be composited concrete, and it is compound no matter to be that two-layer or two-layer above subring 2 is connected, and its principle is all identical with mode.For ease of explanation, in the mode of execution shown in Fig. 1, ring body 1 is the simplest mode of execution that is composited by two-layer subring 2, and in this embodiment, the convex-concave overlap joint mouth 3 of piston ring also is the simplest three-dimensional convex-concave overlap joint mouth, promptly along the convex-concave overlap joint that is second step type on three-dimensional any one dimension direction mouthfuls 3, this convex-concave overlap joint mouthfuls 3 by two-layer have radially along the circumferential direction to stagger each other to be connected behind the certain distance with the subring 2 of the two-dimentional convex-concave overlap joint of circumferencial direction mouthful be composited.Because after the piston ring scuffing, convex-concave overlap joint mouth 3 can open automatically, in order to make convex-concave overlap joint mouth 3 can reach opening of maintenance sealing apart from maximum, that is to say that to make the working life of piston ring the longest, two subrings, 2 convex-concaves overlap joint mouth along the circumferential direction stagger a distance should the longer the better, but for very thin subring 2, distance is too big if stagger, the projection that subring 2 is stretched out is too thin, is easy to damage or distortion, thereby influences the piston ring performance.Therefore, the distance that staggers just in time gets final product for the projection length of subring convex-concave overlap joint mouth.Figure 2 shows that the identical mode of execution of subring 2 structures, if each subring 2 is identical, can reduce the quantity of mould when then making, if the even level piston ring that the arrangement mode that interlaces with positive and negative between the subring 2 is connected and forms, its positive and negative structure is identical, can not consider positive and negative, very convenient during installation.Certain different piston ring of subring 2 structures, the reasonable arrangement between subring is compound, also can be made into the identical piston ring in positive and negative.In mode of execution shown in Figure 2, be provided with a tongue shape projection 3 ' that along the circumferential direction stretches out forward in the middle of the shape of the convex-concave of described subring 2 overlap joint mouthful is preferably, the both sides of tongue shape projection 3 ' be width equate along the circumferential direction after the identical notch of degree of stretching that contracts; And the centre of another convex-concave overlap joint mouthfuls 3 offers a recess 3 with tongue shape projection 3 ' coupling ", recess 3 " both sides are boss that the notch with tongue shape projection 3 ' both sides mates.Because the wearing and tearing of the outer periphery of piston ring are very fast, in order to prolong the life-span of piston ring, can plate one deck wearing layer, or whole piston ring is carried out Wear-resistant Treatment in the piston ring outside.

Claims

1, the piston ring that has complementary functions, comprise the lap joint of offering on ring body and the ring body, it is characterized in that: described ring body (1) is connected each other by two or more subrings (2) and forms, lap joint place of subring (2) offers two-dimentional convex-concave overlap joint mouth, its lap joint of each subring (2) compound tense certain distance that along the circumferential direction staggers mutually forms three-dimensional convex-concave overlap joint mouthful (3).

2, the piston ring that has complementary functions according to claim 1 is characterized in that: described ring body (1) vertically, be the thickness direction layering, the two-dimentional convex-concave overlap joint of each subring (2) mouthful offer direction for radially and circumferencial direction; The distance that convex-concave overlap joint mouth between subring (2) along the circumferential direction staggers equals the length of the projection of subring (2) convex-concave overlap joint mouth.

3, the piston ring that has complementary functions according to claim 1 is characterized in that: the double-edged subring of described ring body (1) (2) is identical, but one just, one instead be fixed on ring body (1) two sides, form the tow sides top layer and encircle identical piston ring.

4, the piston ring that has complementary functions according to claim 2 is characterized in that: the double-edged subring of described ring body (1) (2) is identical, but one just, one instead be fixed on ring body (1) two sides, form the tow sides top layer and encircle identical piston ring.

5, according to any one described piston ring that has complementary functions in the claim 1～4, it is characterized in that: each subring (2) structure of described composition ring body (1) is all identical.

6, the piston ring that has complementary functions according to claim 5 is characterized in that: each identical subring (2) compound tense has at least the positive and negative of a subring (2) opposite with other subring (2).

7, the piston ring that has complementary functions according to claim 6 is characterized in that: arrange compound with an order of positive one anti-phase between the subring (2).

8, according to any one described piston ring that has complementary functions in the claim 1～4, it is characterized in that: the centre of the convex-concave of described subring (2) overlap joint mouthful is provided with a tongue shape projection (3 ') that along the circumferential direction stretches out forward, the both sides of tongue shape projection (3 ') be width equate along the circumferential direction after the identical notch of degree of stretching that contracts; And the centre of another convex-concave overlap joint mouthful (3) offer one with the recess of tongue shape projection (3 ') coupling (3 "), the both sides of recess (3 ") are the boss that the notch with tongue shape projection (3 ') both sides mates.

9, the piston ring that has complementary functions according to claim 5, it is characterized in that: the convex-concave of described subring (2) overlap joint mouthful) the centre be provided with a tongue shape projection (3 ') that along the circumferential direction stretches out forward, the both sides of tongue shape projection (3 ') be width equate along the circumferential direction after the identical notch of degree of stretching that contracts; And the centre of another convex-concave overlap joint mouthful (3) offer one with the recess of tongue shape projection (3 ') coupling (3 "), the both sides of recess (3 ") are the boss that the notch with tongue shape projection (3 ') both sides mates.

10, the piston ring that has complementary functions according to claim 6, it is characterized in that: the centre of the convex-concave of described subring (2) overlap joint mouthful is provided with a tongue shape projection (3 ') that along the circumferential direction stretches out forward, the both sides of tongue shape projection (3 ') be width equate along the circumferential direction after the identical notch of degree of stretching that contracts; And the centre of another convex-concave overlap joint mouthful (3) offers the recess (3 ") of a tongue shape projection (3 ') coupling, and the both sides of recess (3 ") are the boss with the notch coupling on tongue shape projection (3 ') both sides.