Oil scraper ring structure of internal combustion engine piston

Abstract

The utility model belongs to the technical field of oil scraping rings, and discloses an oil scraping ring structure of an internal combustion engine piston, which comprises an oil scraping piece, the oil scraping piece comprises a first semi-circular ring and a second semi-circular ring, and a positioning mechanism is arranged between the first semi-circular ring and the second semi-circular ring. And the first semicircular ring and the second semicircular ring are movably connected through a positioning mechanism. When the second semi-circular ring and the first semi-circular ring need to be separated and detached, the side, away from the first semi-circular ring, of the second semi-circular ring can be pulled, the insertion block is pulled out of the insertion groove, then the baffle makes contact with the back face of the positioning plate, and finally the second semi-circular ring is rotated by 180 degrees on the surface of the guide column through the rotating shaft; when the second semi-circular ring and the first semi-circular ring need to be assembled, the baffle and the rotating shaft only need to be inserted into the positioning groove and then rotated by 180 degrees, and the baffle is located right behind the positioning plate.

Description

Technical Field

[0001] This utility model belongs to the field of oil scraper ring technology, specifically an oil scraper ring structure for an internal combustion engine piston. Background Technology

[0002] Oil scraper rings are mainly used in general-purpose reciprocating compressors to prevent lubricating oil from the crankcase from entering the cylinder, thus achieving oil-free compressed gas. The oil-blocking effect of the oil scraper ring is particularly important for ensuring the oil-free state of general-purpose reciprocating compressors.

[0003] A search revealed that patent CN216407095U discloses an oil scraper ring structure installed in an oil scraper box, belonging to the field of oil scraper ring technology. This oil scraper ring includes an oil scraper ring assembly, which comprises an oil scraper component and a tension spring assembly. The tension spring assembly is mounted on the outer wall of the oil scraper component. The oil-blocking groove effectively blocks oil, preventing it from entering the cylinder. The inner semi-circular groove scrapes oil from the piston surface, allowing the scraped oil to enter its interior. The inclined first semi-circular groove allows oil from the piston surface to enter its interior during scraping. This, combined with the inner walls of the first, second, and third semi-circular rings, makes oil scraping more thorough. The second semi-circular groove increases the oil-blocking volume, resulting in a larger oil-blocking capacity and better, cleaner oil scraping, reducing the possibility of oil entering the cylinder.

[0004] Analysis of the above technical solutions reveals that the oil scraper consists of multiple semi-circular rings, and these rings are designed separately. This makes it easy for the semi-circular rings to loosen and move during actual use, resulting in overall structural instability and reduced oil scraping efficiency. Therefore, we provide an oil scraper ring structure for an internal combustion engine piston to solve these problems. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides an oil scraper ring structure for an internal combustion engine piston.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oil scraper ring structure for an internal combustion engine piston, comprising an oil scraper component, wherein the oil scraper component comprises a first semicircular ring and a second semicircular ring, a positioning mechanism is provided between the first semicircular ring and the second semicircular ring, and the first semicircular ring and the second semicircular ring are movably connected through the positioning mechanism.

[0007] Preferably, the positioning mechanism includes a positioning groove and a rotating shaft. The positioning groove is formed at one end of a first semicircular ring, and the rotating shaft is fixedly connected to one end of a second semicircular ring. A positioning plate is fixedly connected to the inner wall of the positioning groove, and a baffle is fixedly connected to the surface of the rotating shaft. The baffle and the rotating shaft are adapted to the notch on the surface of the positioning plate. The rotating shaft passes through the positioning plate and is inserted into the positioning groove, and the baffle is slidably disposed on the inner wall of the positioning groove.

[0008] Preferably, a guide post is fixedly connected to the inner wall of the positioning groove, and a guide groove is provided at one end of the rotating shaft, and the rotating shaft is sleeved on the guide post through the guide groove.

[0009] Preferably, the end of the first semicircular ring away from the positioning groove is provided with a slot, and the end of the second semicircular ring away from the rotating shaft is fixedly connected with a plug, and the plug is inserted into the slot. The distance between the baffle and the positioning plate is greater than the length of the plug.

[0010] Preferably, the positioning groove is semi-circular, and the guide post is located in the middle of the positioning groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention, through the cooperative arrangement of the first semi-circular ring, the second semi-circular ring, the positioning mechanism, the slot, and the insert block, allows for easy separation and disassembly of the second and first semi-circular rings. The second semi-circular ring can be pulled away from the first semi-circular ring, allowing the insert block to be pulled out of the slot. Subsequently, the baffle will contact the back of the positioning plate. Finally, the second semi-circular ring can be rotated 180° on the surface of the guide post via the pivot, allowing the baffle and pivot to be pulled out of the positioning slot. This makes operation more convenient. When assembling the second and first semi-circular rings, simply insert the baffle and pivot into the positioning slot, then rotate them 180° so that the baffle is directly behind the positioning plate. Then, insert the insert block into the slot, bringing the first and second semi-circular rings into contact. This prevents the first and second semi-circular rings from shifting, thus improving the structural stability of the oil scraper and ensuring its oil scraping effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the first semi-circular ring of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the second semi-circular ring of this utility model;

[0016] Figure 4 This is a top-section structural diagram of the present invention;

[0017] Figure 5This is a partial cross-sectional view of the present invention from the front.

[0018] Figure 6 This utility model Figure 2 Enlarged schematic diagram of the structure at point A;

[0019] Figure 7 This utility model Figure 3 Enlarged schematic diagram of the structure at point B;

[0020] Figure 8 This utility model Figure 4 An enlarged schematic diagram of the structure at point C.

[0021] In the diagram: 1. Oil scraper; 101. First semi-circular ring; 102. Second semi-circular ring; 2. Positioning plate; 3. Slot; 4. Insert block; 5. Positioning groove; 6. Baffle; 7. Rotating shaft; 8. Guide post; 9. Guide groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-8 As shown, this embodiment proposes an oil scraper ring structure for an internal combustion engine piston, including an oil scraper 1. The oil scraper 1 includes a first semi-circular ring 101 and a second semi-circular ring 102. A positioning mechanism is provided between the first semi-circular ring 101 and the second semi-circular ring 102, and the first semi-circular ring 101 and the second semi-circular ring 102 are movably connected through the positioning mechanism. The positioning mechanism can quickly connect the first semi-circular ring 101 and the second semi-circular ring 102, thereby ensuring the stability of the first semi-circular ring 101 and the second semi-circular ring 102 on the piston after assembly, and facilitating the subsequent disassembly and replacement of the first semi-circular ring 101 or the second semi-circular ring 102, thus improving the flexibility of the oil scraper 1. The mechanics, parts and equipment in this device all adopt conventional models in the prior art, and will not be described in detail here.

[0024] like Figures 5 to 8As shown, the positioning mechanism includes a positioning groove 5 and a rotating shaft 7. The positioning groove 5 is formed at one end of the first semicircular ring 101, and the rotating shaft 7 is fixedly connected to one end of the second semicircular ring 102. A positioning plate 2 is fixedly connected to the inner wall of the positioning groove 5, and a baffle 6 is fixedly connected to the surface of the rotating shaft 7. The baffle 6 and the rotating shaft 7 are adapted to the notch on the surface of the positioning plate 2. The rotating shaft 7 passes through the positioning plate 2 and is inserted into the positioning groove 5. The baffle 6 is slidably disposed on the inner wall of the positioning groove 5. With the above structure, the second semicircular ring 102 and the first semicircular ring 101 can be quickly assembled and connected. In specific operation, simply insert the rotating shaft 7 and the baffle 6 into the positioning groove 5, and then rotate the second semicircular ring 102 180° to swing the baffle 6 to the rear of the positioning plate 2. The positioning plate 2 limits the baffle 6, preventing the rotating shaft 7 from easily disengaging from the positioning groove 5. This allows the first semicircular ring 101 and the second semicircular ring 102 to be quickly assembled, improving the stability of the subsequent oil scraper 1.

[0025] like Figures 5 to 8 As shown, a guide post 8 is fixedly connected to the inner wall of the positioning groove 5, and a guide groove 9 is provided at one end of the rotating shaft 7. The rotating shaft 7 is sleeved on the guide post 8 through the guide groove 9. With the setting of the guide post 8, the rotational stability of the rotating shaft 7 in the positioning groove 5 can be guaranteed, and the rotating shaft 7 can be prevented from sliding randomly in the positioning groove 5. This makes the rotation trajectory of the baffle 6 match the curvature of the inner wall of the positioning groove 5, and also ensures the rotational stability of the baffle 6 in the positioning groove 5, thereby improving the stability of the first semicircular ring 101 and the second semicircular ring 102 after assembly.

[0026] like Figure 3 , Figure 4 and Figure 8As shown, the first semicircular ring 101 has a slot 3 at the end away from the positioning groove 5, and the second semicircular ring 102 has a plug 4 fixedly connected to the end away from the rotating shaft 7, with the plug 4 inserted into the slot 3. The distance between the baffle 6 and the positioning plate 2 is greater than the length of the plug 4. With the above structure, the first semicircular ring 101 and the second semicircular ring 102 can be prevented from swinging arbitrarily. After the first semicircular ring 101 and the second semicircular ring 102 are assembled, the spring ring is then assembled on the outside. When it is necessary to separate and remove the second semicircular ring 102 from the first semicircular ring 101, the end of the second semicircular ring 102 away from the first semicircular ring 101 is... Pull the insert 4 out of the slot 3 by side, and then the baffle 6 will also contact the back of the positioning plate 2. Finally, rotate the second semi-circular ring 102 180° on the surface of the guide post 8 via the rotating shaft 7, and the baffle 6 and the rotating shaft 7 can be pulled out of the positioning groove 5. The operation is more convenient. When it is necessary to assemble the second semi-circular ring 102 with the first semi-circular ring 101, simply insert the baffle 6 and the rotating shaft 7 into the positioning groove 5, and then rotate them 180° so that the baffle 6 is directly behind the positioning plate 2. Then insert the insert 4 into the slot 3 so that the first semi-circular ring 101 and the second semi-circular ring 102 are in contact, and the operation is completed.

[0027] like Figure 5 and Figure 6 As shown, the positioning groove 5 is semi-circular, and the guide post 8 is located in the middle of the positioning groove 5. When the rotating shaft 7 is inserted into the positioning groove 5, the rotating shaft 7 is just sleeved on the guide post 8, so that the rotation of the rotating shaft 7 can drive the baffle 6 to rotate on the inner wall of the positioning groove 5, thereby realizing the subsequent limiting of the baffle 6.

[0028] The working principle and usage process of this utility model are as follows: When assembling the first semicircular ring 101 and the second semicircular ring 102, firstly, insert the baffle 6 and the rotating shaft 7 into the positioning groove 5, and then rotate 180° so that the baffle 6 is directly behind the positioning plate 2. At this time, the first semicircular ring 101 and the second semicircular ring 102 will form a ring shape. Then, push the second semicircular ring 102 to insert the insert 4 into the slot 3, thereby improving the connection stability between the first semicircular ring 101 and the second semicircular ring 102, preventing them from moving at will, and improving the oil scraping effect of the oil scraper 1. Finally, assemble the spring ring into the first... The outer sides of the semicircular ring 101 and the second semicircular ring 102 are sufficient. When it is necessary to separate and remove the second semicircular ring 102 from the first semicircular ring 101, first remove the spring rings on the outer sides of the first semicircular ring 101 and the second semicircular ring 102. Then pull the side of the second semicircular ring 102 away from the first semicircular ring 101 to pull the insert 4 out of the slot 3. Then the baffle 6 will also contact the back of the positioning plate 2. Finally, rotate the second semicircular ring 102 180° on the surface of the guide post 8 through the rotating shaft 7 to pull the baffle 6 and the rotating shaft 7 out of the positioning groove 5. The operation is more flexible and convenient.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oil scraper ring structure for an internal combustion engine piston, comprising an oil scraper (1), characterized in that: The oil scraper (1) includes a first semicircular ring (101) and a second semicircular ring (102). A positioning mechanism is provided between the first semicircular ring (101) and the second semicircular ring (102), and the first semicircular ring (101) and the second semicircular ring (102) are movably connected through the positioning mechanism.

2. The oil scraper ring structure for an internal combustion engine piston according to claim 1, characterized in that: The positioning mechanism includes a positioning groove (5) and a rotating shaft (7). The positioning groove (5) is opened at one end of the first semi-circular ring (101). The rotating shaft (7) is fixedly connected to one end of the second semi-circular ring (102). A positioning plate (2) is fixedly connected to the inner wall of the positioning groove (5). A baffle (6) is fixedly connected to the surface of the rotating shaft (7). The baffle (6) and the rotating shaft (7) are adapted to the notch on the surface of the positioning plate (2). The rotating shaft (7) passes through the positioning plate (2) and is inserted into the positioning groove (5). The baffle (6) is slidably disposed on the inner wall of the positioning groove (5).

3. The oil scraper ring structure for an internal combustion engine piston according to claim 2, characterized in that: The inner wall of the positioning groove (5) is fixedly connected to a guide post (8), and one end of the rotating shaft (7) is provided with a guide groove (9), and the rotating shaft (7) is sleeved on the guide post (8) through the guide groove (9).

4. The oil scraper ring structure for an internal combustion engine piston according to claim 2, characterized in that: The first semicircular ring (101) has a slot (3) at one end away from the positioning groove (5), and the second semicircular ring (102) has a plug (4) fixedly connected at one end away from the rotating shaft (7), and the plug (4) is inserted into the slot (3). The distance between the baffle (6) and the positioning plate (2) is greater than the length of the plug (4).

5. The oil scraper ring structure for an internal combustion engine piston according to claim 3, characterized in that: The positioning groove (5) is semi-circular, and the guide post (8) is located in the middle of the positioning groove (5).

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