Three-petal type oil scraper ring

Abstract

The utility model discloses a three-petal type oil scraper ring, which is a circular ring formed by three fan-shaped rings, the outer ring of each fan-shaped ring is provided with a tension spring binding groove for embedding a tension spring, the outer ring of each fan-shaped ring is divided into an upper outer lip and a lower outer lip by the tension spring binding groove, the inner ring of each fan-shaped ring is provided with an oil storage groove, and the oil storage groove is provided with an oil outlet. Equal-distance notches are further formed in the outer periphery of the fan-shaped ring, and penetrating holes used for communicating the tension spring binding groove with the oil storage groove are formed in the inner sides of the notches. The oil scraper is simple in structure and has excellent oil scraping and lubricating effects.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the piston seal or the oil scraper ring of axle stem. BACKGROUND

[0002] The oil scraper ring is usually used for the piston, has two kinds of ordinary oil ring and combined oil ring, the ordinary oil ring seal and the oil scraping effect are not good, but the combined oil ring is complex in structure and is too high in cost. SUMMARY

[0003] In view of the above-mentioned existing problems and deficiencies, the utility model aims at providing a three-petal oil scraper ring.

[0004] Technical scheme: in order to realize the above-mentioned invention purpose, the utility model adopts the following technical scheme: a three-petal oil scraper ring is a circular ring composed of three sector rings, the outer ring of the sector ring is provided with a tension spring binding groove for embedding a tension spring, the tension spring binding groove divides the outer ring of the sector ring into an upper outer lip and a lower outer lip, the inner ring of the sector ring is provided with an oil storage groove, the outer edge of the sector ring is further provided with equidistant missing grooves, and the inner side of the missing groove is provided with a perforation for connecting the tension spring binding groove and the oil storage groove.

[0005] As a preferred, the missing groove only penetrates the lower outer lip.

[0006] As a preferred, the oil storage groove is an inwardly downward inclined annular groove.

[0007] As a preferred, the angle of the inwardly downward inclination of the oil storage groove is 15±5 °.

[0008] As a preferred, the sector ring is further provided with a positioning through hole.

[0009] As a preferred, the missing groove is semicircular.

[0010] As a preferred, the sector ring is made of ferrous alloy, aluminum alloy or copper alloy material.

[0011] Beneficial effects: compared with the prior art, the utility model has simple structure and excellent oil scraping and lubricating effect. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structure schematic view of three-petal oil scraper ring of the utility model;

[0013] Figure 2 It is the bottom view of three-petal oil scraper ring of the utility model;

[0014] Figure 3 It is the perspective view of three-petal oil scraper ring of the utility model;

[0015] Figure 4The utility model discloses a three-lab type oil scraping ring's cross section view.

[0016] Figure 5 For Figure 4 The enlarged view of A in the middle.

[0017] Fan ring 1, tension spring binding groove 2, upper outer lip 3, lower outer lip 4, oil storage groove 5, missing groove 6, perforation 7, positioning through hole 8. Specific embodiments

[0018] The utility model is further illustrated below in combination with the drawings and specific embodiments, and it should be understood that these embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model, and after reading the utility model, the modification of various equivalent forms of the utility model by the person skilled in the art all fall within the range defined in the claims attached to the present application.

[0019] As Figures 1-3 The utility model discloses a three-lab type oil scraping ring, which is a circular ring composed of three fan rings with an angle of 120 degrees. A tension spring binding groove is arranged on the outer ring of the fan ring. When the fan ring is sleeved on a shaft or a piston, the fan ring is embedded into the tension spring to form a circular oil scraping ring. The tension spring binding groove divides the outer edge of the fan ring into an upper outer lip and a lower outer lip. A semicircular missing groove is arranged equidistantly on the lower outer lip of the fan ring. An annular oil storage groove with an inward downward inclination angle of 15 degrees is designed on the inner ring of the fan ring. A perforation is designed on the inner side of the missing groove to connect the tension spring binding groove and the oil storage groove. The position of the perforation is preferably consistent with the position of the missing groove.

[0020] As a preferred solution, the fan ring of the utility model is made of ferrous alloy.

[0021] During assembly, the three fan rings are sleeved on the main shaft or the piston, and the circular ring is sleeved on the shaft body through the tension spring ring. During operation, the outer ring of the oil scraping ring of the utility model contacts with the sleeve wall of the shaft and slides along the axial direction. The accumulated lubricating oil can flow and store in the oil storage groove and the binding groove of the inner and outer rings through the perforation, ensuring sufficient lubrication. As a preferred solution, the oil storage groove of the inner ring is designed to be inclined downward, which is beneficial to better scraping the lubricating oil on the shaft. The missing groove of the utility model is beneficial to the passage of the lubricating oil and facilitates processing.

[0022] The above only describes some embodiments of the utility model, and it should be noted that those skilled in the art can make some improvements and refinements without departing from the principles of the utility model. These improvements and refinements should also be considered as the protection scope of the utility model.

Claims

1. A three-piece oil slinger, characterized by: The application relates to a circular ring composed of three fan-shaped rings, the outer ring of the fan-shaped rings is provided with a pull spring binding groove for embedding a pull spring, the pull spring binding groove divides the outer ring of the fan-shaped rings into an upper outer lip and a lower outer lip, the inner ring of the fan-shaped rings is provided with an oil storage groove, equidistant missing grooves are further arranged on the outer edge of the fan-shaped rings, and the inner side of the missing grooves is provided with a perforation for connecting the pull spring binding groove and the oil storage groove.

2. The three-piece oil slinger of claim 1, wherein: The missing groove only penetrates the lower outer lip.

3. The three-piece oil slinger of claim 1, wherein: The oil storage groove is an annular groove which is downwardly inclined inwardly.

4. The three-piece oil slinger of claim 2, wherein: The angle of the oil storage groove which is downwardly inclined inwardly is 15+ / -5 degrees.

5. The three-piece oil slinger of claim 1, wherein: The fan-shaped ring is further provided with a positioning through hole.

6. The three-piece oil slinger of claim 1, wherein: The missing groove is semicircular.

7. The three-piece oil slinger of claim 1, wherein: The fan-shaped ring is made of ferrous alloy, aluminum alloy or copper alloy.

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