Easily-attached four-piece oil retainer

Abstract

The utility model discloses an easy-to-fit four-piece oil retainer, which comprises oil scraping pieces and spring rings, the outer sides of the oil scraping pieces are sleeved with the spring rings for fixing the oil scraping pieces, the four groups of oil scraping pieces are connected end to end to form an annular oil scraping ring, the oil scraping ring is provided with oil return channels which are distributed circumferentially, the oil scraping pieces are provided with diagonal planes, and the diagonal planes are provided with oil return channels which are distributed circumferentially. The utility model aims at that the oil retainer adopts a four-section structure, compared with a traditional three-section structure, the number of the oil scraping pieces is increased, the arc length of each oil scraping piece is reduced, the oil scraping pieces are more flexible to adjust during installation, and the inner sides of the oil scraping pieces are ensured to be more attached to the surface of a piston shaft.

Description

Technical Field

[0001] This utility model relates to the technical field of oil baffle rings, and in particular to an easy-to-fit four-lobed oil baffle ring. Background Technology

[0002] Oil baffles are commonly used oil scraping components in rotating machinery such as internal combustion engines and compressors. They are usually installed on the piston shaft. Traditional oil baffles often adopt a three-lobed structure. For example, patent number CN202223396902.0 discloses a low-wear oil scraping ring assembly, which consists of three oil scraping components connected end to end to form a ring. A spring ring is sleeved on the outside to provide radial clamping force, so that the inner side of the oil scraping component is in contact with the shaft surface to achieve the oil scraping function. However, in the three-lobed oil baffle ring, because the arc length of each oil scraping component is relatively large, the adjustment space during installation is limited, which can easily lead to local gaps or poor contact, affecting the oil scraping effect. Utility Model Content

[0003] To overcome the shortcomings of the prior art, the technical solution adopted by this utility model is: an easy-to-fit four-lobed oil-blocking ring, including an oil scraper and a spring ring. The outer side of the oil scraper is fitted with a spring ring for fixing the oil scraper. The four sets of oil scrapers are connected end to end to form a ring-shaped oil scraper. The oil scraper has a circumferentially distributed oil return channel. The oil scraper has a beveled surface, and the beveled surfaces of the four sets of oil scrapers are combined to form a virtual square.

[0004] Using the above technical solution, the oil baffle ring adopts a four-lobed structure. Compared with the traditional three-lobed structure, the number of oil scraping parts increases, resulting in a smaller arc length for each oil scraping part. This allows for more flexible adjustment of the oil scraping parts during installation, ensuring that the inner side of the oil scraping parts fits more closely to the piston shaft surface. Furthermore, the combination of the beveled surfaces of the oil scraping parts forms a virtual square structure, increasing the contact area between adjacent oil scraping parts and reserving wear allowance for the oil scraping parts. When the oil baffle ring or piston shaft experiences slight wear, the wear area is compensated by the beveled inward offset under the continuous clamping action of the spring ring, ensuring a uniform oil film thickness on the piston shaft surface and effectively extending the service life of the oil scraping ring.

[0005] The present invention is further configured such that the oil return channel includes an oil return hole and an oil guide hole provided on the oil scraper, and the inner side of the oil scraper is connected to the outer side of the oil guide hole through the oil return hole.

[0006] Furthermore, the inner side of the oil scraper is provided with an oil scraping part one and an oil scraping part two, as well as an oil guide groove provided between the oil scraping part one and the oil scraping part two, and the oil return hole is connected to the oil guide groove.

[0007] Furthermore, the oil scraper ring has radially distributed oil return holes, and the oil guide holes are perpendicularly distributed to the oil return holes.

[0008] Using the above technical solution, the piston shaft passes through two oil scraping structures, namely oil scraping section one and oil scraping section two. The oil scraped off by oil scraping section two accumulates in the oil guide groove, and the oil in the oil guide groove flows to the outside of the oil scraping component through the oil return hole, thus preventing the oil in the oil guide groove from accumulating and overflowing.

[0009] The present invention is further configured such that the oil guide grooves are distributed inclined from the inside to the outside in the direction of the oil scraping part two.

[0010] By adopting the above technical solution, the inclined distribution of the oil guide grooves creates a large angle of attack for the oil scraper facing the oil. After the oil is scraped off, it flows smoothly outward along the wall of the oil guide groove, resulting in a uniform oil scraping effect.

[0011] The present invention is further configured such that the oil return hole is an elongated hole.

[0012] By adopting the above technical solution, the cross-sectional area of ​​the oil return hole is increased by using an elongated hole, thereby increasing the amount of oil returned per unit time and ensuring that the scraped oil can flow out quickly, thus avoiding the accumulation of oil inside the scraper ring.

[0013] The present invention is further configured such that the oil scraper has a countersunk groove on one side of the oil scraper section and an oil guide slope connected to the countersunk groove.

[0014] Furthermore, the oil scraper is provided with a semi-circular groove for fitting a spring ring, and the countersunk groove is connected to the semi-circular groove through an oil guide slope.

[0015] By adopting the above technical solution, the oil scraped off by the oil scraper unit flows through the countersunk groove and along the oil guide slope into the semi-circular groove, thereby constantly and fully lubricating the spring ring, reducing the wear between the spring ring and the oil scraper, and thus extending the service life of the spring ring.

[0016] The embodiments of this utility model will be further described below with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a front view of the oil scraper in this utility model;

[0018] Figure 2 This is the front view of this utility model;

[0019] Figure 3 This is the utility model Figure 2 A rotated sectional view of the view in direction A;

[0020] Figure 4 This is the utility model Figure 2 A sectional view of the B-direction view;

[0021] Figure 5 This is the utility model Figure 3A magnified view of a section at point C;

[0022] Figure 6 This is the utility model Figure 4 A schematic diagram of the structure in the D-direction view;

[0023] Among them: 1-oil scraper, 2-spring ring, 3-oil scraper ring, 4-oil return channel, 5-virtual square, 10-beveled surface, 11-oil return hole, 12-oil guide hole, 13-oil scraper part one, 14-oil scraper part two, 15-oil guide groove, 16-countersunk groove, 17-oil guide bevel, 18-semi-circular groove; Detailed Implementation

[0024] The embodiments of this utility model will now be described with reference to the accompanying drawings. In this process, to ensure clarity and convenience, we may exaggerate the width of lines or the size of constituent elements in the drawings.

[0025] Furthermore, the terms used below are defined based on the functions of this utility model and may vary depending on the intentions or conventions of the user or operator. Therefore, these terms are defined based on the entire contents of this specification.

[0026] like Figure 1 , 2 As shown, an easy-to-fit four-lobed oil-blocking ring includes an oil scraper 1 and a spring ring 2. The spring ring 2 for fixing the oil scraper 1 is sleeved on the outside of the oil scraper 1. The four sets of oil scrapers 1 are connected end to end to form an annular oil scraper ring 3. The oil scraper ring 3 is provided with a circumferentially distributed oil return channel 4. The oil scraper 1 is provided with a beveled surface 10, and the beveled surfaces 10 of the four sets of oil scrapers 1 are combined to form a virtual square 5.

[0027] Combination Figure 3 , 4 As shown, in this embodiment, the oil return channel 4 includes an oil return hole 11 and an oil guide hole 12 provided on the oil scraper 1. The inner side of the oil scraper 1 is connected to the outer side of the oil guide hole 12 through the oil return hole 11. The inner side of the oil scraper 1 is provided with an oil scraping part 13 and an oil scraping part 2 14, and an oil guide groove 15 provided between the oil scraping part 13 and the oil scraping part 2 14. The oil return hole 11 is connected to the oil guide groove 15. The oil scraper ring 3 has oil return holes 11 radially distributed, and the oil guide holes 12 are vertically distributed on the oil return holes 11. The piston shaft passes through the two oil scraping structures, the oil scraping part 13 and the oil scraping part 2 14, in sequence. The oil scraped off by the oil scraping part 2 14 accumulates in the oil guide groove 15. The oil in the oil guide groove 15 then flows to the outer side of the oil scraper 1 through the oil return hole 11, avoiding the accumulation of oil in the oil guide groove 15 and overflow.

[0028] Combination Figure 6As shown, in this embodiment, the oil guide groove 15 is inclined from the inside to the outside in the direction of the second oil scraper 14. The inclined distribution of the oil guide groove 15 makes the second oil scraper 14 form a large angle of attack in the direction of the oil. After the oil is scraped off, it flows smoothly outward along the wall of the oil guide groove 15, so that the oil scraping effect is uniform. The oil return hole 11 is an elongated hole. The elongated hole increases the cross-sectional area of ​​the oil return hole 11, increases the amount of oil returned per unit time, and ensures that the scraped oil can flow out quickly, avoiding the accumulation of oil inside the oil scraper ring 3.

[0029] Combination Figure 5 As shown, in this embodiment, the oil scraper 1 has a countersunk groove 16 on one side of the oil scraper section 13, and an oil guide slope 17 connected to the countersunk groove 16. The oil scraper 1 has a semi-circular groove 18 for fitting the spring ring 2. The countersunk groove 16 is connected to the semi-circular groove 18 through the oil guide slope 17. The oil scraped off by the oil scraper section 13 flows through the countersunk groove 16 and along the oil guide slope 17 into the semi-circular groove 18, thereby fully lubricating the spring ring 2 at all times, reducing the wear between the spring ring 2 and the oil scraper 1, and thus extending the service life of the spring ring 2.

[0030] In this invention, during transmission, the piston shaft passes through the first oil scraper 13 and the second oil scraper 14 in sequence to scrape off excess oil from the shaft surface. The oil baffle ring adopts a four-lobed structure. Compared with the traditional three-lobed structure, the number of oil scraper 1 is increased, which reduces the arc length of each oil scraper 1. This allows for more flexible adjustment of the oil scraper 1 when installing the piston shaft, ensuring that the inner side of the oil scraper 1 fits more closely to the piston shaft surface. Furthermore, the oblique cut surfaces 10 of the oil scraper 1 combine to form a virtual square 5 structure, increasing the contact area between adjacent oil scraper 1 and reserving wear allowance for the oil scraper 1. When the oil baffle ring or piston shaft experiences slight wear, the wear is compensated by the oblique inward offset under the continuous clamping action of the spring ring 2, ensuring that the oil film thickness on the piston shaft surface is uniform.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A four-lobed oil-blocking ring that is easy to fit, characterized in that, It includes an oil scraper (1) and a spring ring (2). The outer side of the oil scraper (1) is fitted with a spring ring (2) for fixing the oil scraper (1). The four sets of oil scrapers (1) are connected end to end to form an oil scraper ring (3). The oil scraper ring (3) is provided with a return oil channel (4) distributed in a circle. The oil scraper (1) is provided with a beveled surface (10), and the beveled surfaces (10) of the four sets of oil scrapers (1) are combined to form a virtual square (5).

2. The easily fitting four-lobed oil-blocking ring according to claim 1, characterized in that: The oil return channel (4) includes an oil return hole (11) and an oil guide hole (12) provided on the oil scraper (1). The inner side of the oil scraper (1) is connected to the outer side of the oil guide hole (12) through the oil return hole (11).

3. The easily fitting four-lobed oil-blocking ring according to claim 2, characterized in that: The inner side of the oil scraper (1) is provided with an oil scraping part one (13) and an oil scraping part two (14), and an oil guide groove (15) is provided between the oil scraping part one (13) and the oil scraping part two (14). The oil return hole (11) is connected to the oil guide groove (15).

4. The easily fitting four-lobed oil-blocking ring according to claim 3, characterized in that: The oil scraper ring (3) has oil return holes (11) radially distributed, and the oil guide holes (12) are vertically distributed on the oil return holes (11).

5. The easily fitting four-lobed oil-blocking ring according to claim 3, characterized in that: The oil guide groove (15) is distributed from the inside out in the direction of the second oil scraper (14).

6. The easily fitting four-lobed oil-blocking ring according to claim 2, characterized in that: The oil return hole (11) is an elongated hole.

7. The easily fitting four-lobed oil-blocking ring according to claim 3, characterized in that: The oil scraper (1) has a countersunk groove (16) on one side of the oil scraper part (13) and an oil guide slope (17) connected to the countersunk groove (16).

8. The easily fitting four-lobed oil-blocking ring according to claim 7, characterized in that: The oil scraper (1) is provided with a semi-circular groove (18) for fitting the spring ring (2), and the countersunk groove (16) is connected to the semi-circular groove (18) through the oil guide slope (17).

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