CN2883805Y

CN2883805Y - Double wedge positioned combined sealing piston ring

Info

Publication number: CN2883805Y
Application number: CN 200620072405
Authority: CN
Inventors: 曹相宾
Original assignee: HENGJI POWER MACHINERY CO Ltd YANGZHOU
Current assignee: HENGJI POWER MACHINERY CO Ltd YANGZHOU
Priority date: 2006-04-06
Filing date: 2006-04-06
Publication date: 2007-03-28
Anticipated expiration: 2016-04-06

Abstract

The utility model relates to a combination sealed piston ring positioned by the convex tooth for effectively, which aims to improve the sealing performance, prolong the service life, simplify the process and reduce the production costs; the utility model comprises a main ring and a minor ring. The minor ring is mutually superposed with the steps in the main ring; the positioning convex tooth of the minor ring is arranged in the positioning gap of the main ring; the gaps of the main ring and the minor ring are interleaved. The composition which causes the inner frictional resistance press increasing the flexibility of the piston ring achieves the aim of sealing the gap of the piston ring, and reduces the solid-up force between the main ring and the minor ring.

Description

Piston ring is sealed in the combination of double wedge location

Technical field

The utility model relates to a kind of piston ring, and especially the piston ring that seals is made up in the double wedge location of internal-combustion engine use.

Background technique

At present, many combined types seal piston ring, substantially all be to cooperate with circle in the inner loop with the evagination step that is provided with on the main ring end face to seal, to reach the purpose that improves the piston ring packing performance, it is unreasonable that these class compound piston ring great majority exist processing technology, and the production technology difficulty is big, the cost height, after assembly performance poor (in the installation process major and minor ring easily separated and be difficult to groove) even long-term the use, its inner loop goes out groove because of wearing and tearing, causes scuffing of cylinder bore.

The model utility content

The purpose of this utility model provides and a kind ofly can effectively improve sealability, increases the service life, and simplifies technology, and piston ring is sealed in the combination of the double wedge that reduces production costs location.

The utility model is that piston ring is sealed in the location combination of a kind of double wedge, it comprises main ring and inner loop, main ring is provided with opening, at least one side internal circle edge at main ring is provided with interior step, at opening locating notch is set, two relative indent steps compositions that described locating notch is served as reasons and is separately positioned on the main ring two ends, the interior step continued access of this indent step and above-mentioned main ring side internal circle edge; One opening is set on the inner loop, on the inner loop outer circular edge, has a location double wedge; Step is superimposed mutually in inner loop and the main ring, and the location double wedge of inner loop places among the locating notch of main ring, and main ring opening and inner loop opening interlace; The degree of depth of step is identical with the thickness of inner loop in the main ring, and two indent step degree of depth are identical with the location double wedge thickness of inner loop, and the degree of depth of step is identical with two indent step degree of depth in the main ring.

The utility model had both reached the purpose of closed piston ring opened gap, had also reduced simultaneously solid tension effect between main ring and the inner loop, and the interior surface friction drag that produces has improved the elasticity of piston ring.The combination of this structure has also reduced the technical difficulty of production and processing, has improved manufacturing efficiency, has reduced cost, product is more convenient for and market integrates with.

In addition, in the same plane of described inner loop, the angle between the center line of inner loop location double wedge and the center line of inner loop opening is that 10 degree are to 350 degree.

The utility model can also be provided with interior step at the internal circle edge respectively for two sides of main ring, two sides of main ring at opening are provided with locating notch respectively, inner loop is set respectively in the step in each, and the location double wedge of two inner loops places respectively among two locating notches of main ring.

The piston ring of this textural association has further improved its sealability.

Description of drawings

Fig. 1 is the structural representation of the utility model main ring.

Fig. 2 is the structural representation of the utility model inner loop.

Organigram when Fig. 3 is the utility model main ring and inner loop cooperation.

A-A cut-away view among Fig. 3 when Fig. 4 is main ring of the utility model and an inner loop cooperation.

Another kind of A-A cut-away view among Fig. 3 when Fig. 5 is main ring of the utility model and two inner loops cooperations.

Embodiment

In Fig. 1, main ring 1 is provided with opening 3, step 2 in a side internal circle edge of main ring 1 is provided with, at opening 3 places a locating notch 4 is set, the cross section of described locating notch 4 is L-shaped, it is by two that are separately positioned on main ring 1 two ends relative indent steps 8,8 ' form, two indent steps 8,8 ' respectively and interior step 2 continued accesses.

In Fig. 2, inner loop 5 is provided with an opening 7, has a location double wedge 6 on inner loop 5 outer circular edge.Angle between the center line of inner loop location double wedge and the center line of inner loop opening is 70 degree.

The degree of depth of step 2 is identical with the thickness of inner loop 5 in the main ring 1, and two indent steps 8,8 ' degree of depth are identical with location double wedge 6 thickness of inner loop 5, and the degree of depth of main ring 1 interior step 2 and two indent steps 8,8 ' degree of depth are identical.

In Fig. 3, inner loop 5 is superimposed mutually with main ring 1 interior step 2, and the location double wedge 6 of inner loop 5 places among the locating notch 4 of main ring, and main ring opening 3 and inner loop opening 7 interlace.

Figure 4 shows that the A-A cut-away view of Fig. 3 when a main ring 1 and an inner loop 5 cooperate.

In another embodiment, two sides of main ring 1 are step 2 in the internal circle edge is provided with respectively, in two sides of main ring at opening 3 places locating notch 4 is set, and the cross section of locating notch 4 is T-shaped.In each, be provided with respectively in the step 2 inner loop 5,5 ', the location double wedge 6 of two inner loops places respectively among two locating notches 4 of main ring 1.Another kind of A-A cut-away view among Fig. 3 when being illustrated in figure 5 as main ring 1 and two inner loops 5,5 ' cooperation.

Claims

1, piston ring is sealed in a kind of double wedge location combination, comprise main ring and inner loop, it is characterized in that main ring is provided with an opening, at least one side internal circle edge at main ring is provided with interior step, at opening locating notch is set, two relative indent steps compositions that described locating notch is served as reasons and is separately positioned on the main ring two ends, the interior step continued access of this indent step and above-mentioned main ring side internal circle edge; Establish an opening on the inner loop, on the inner loop outer circular edge, have a location double wedge; Step is superimposed mutually in inner loop and the main ring, and the location double wedge of inner loop places among the locating notch of main ring, and main ring opening and inner loop opening interlace; The degree of depth of step is identical with the thickness of inner loop in the main ring, and two indent step degree of depth are identical with the location double wedge thickness of inner loop, and the degree of depth of step is identical with two indent step degree of depth in the main ring.

2, piston ring is sealed in the combination of double wedge location according to claim 1, it is characterized in that in the same plane of inner loop, and the angle between the center line of inner loop location double wedge and the center line of inner loop opening is that 10 degree are to 350 degree.

3, piston ring is sealed in the combination of double wedge location as claimed in claim 1 or 2, two sides that it is characterized in that above-mentioned main ring are provided with interior step at the internal circle edge respectively, two sides of main ring at opening are provided with locating notch respectively, and inner loop is set respectively in the step in each.