Wear resistant engine valve
By introducing a combination of rolling balls and conical rings into the engine valves, the sliding friction is replaced by rolling friction, which solves the problem of engine valve wear, extends service life, reduces vibration, and ensures normal engine operation.
Patent Information
- Application Number
- CN202522711638.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-22
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-22
AI Technical Summary
After prolonged use, the valves of existing engines wear down, causing them to no longer cooperate properly with the engine, resulting in poor intake and exhaust, and affecting the normal operation of the engine.
The design employs a wear-resistant engine valve, which replaces the sliding friction between the engine valve and the engine with rolling friction through a combination of a first mounting hole, a second mounting hole, rolling balls, a moving rod, and a conical ring, thereby reducing wear. Furthermore, the contact between the rolling balls and the engine bores improves alignment.
It reduces engine valve wear, extends service life, reduces vibration, improves the alignment of valve pushrods with engine bores, and ensures normal engine operation.
Smart Images
Figure CN224931720U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine technology, specifically to a wear-resistant engine valve. Background Technology
[0002] The operation of a fuel engine consists of four processes: intake, compression, power, and exhaust. For the engine to run continuously, these four processes must be repeated in sequence and at regular intervals. The engine valves are the key components responsible for the intake and exhaust processes. Through the cooperation of cams and springs, the engine valves open and close regularly, introducing air into the combustion chamber and expelling exhaust gases.
[0003] However, existing engine valves, when in use, need to open or close the air passage, which requires the engine valves to move back and forth in the engine. There will be friction between the engine valves and the engine, which will cause wear after long-term use. This will prevent them from cooperating properly with the engine, which may lead to poor intake and exhaust, affect the normal operation of the engine, and make it difficult to promote their use.
[0004] To address this problem, this application provides a wear-resistant engine valve. Utility Model Content
[0005] The purpose of this invention is to provide a wear-resistant engine valve to solve the problem mentioned in the background art that engine valves will wear after long-term use, making them unable to cooperate properly with the engine, affecting the normal operation of the engine, and resulting in poor performance.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A wear-resistant engine valve includes a mounting assembly, a friction assembly, and a limiting assembly. The mounting assembly includes a valve pushrod, a first mounting hole, and a second mounting hole. The first mounting hole is located on the outer side of the valve pushrod, and the second mounting hole is located on the inner side of the valve pushrod, communicating with each other. The friction assembly is movably mounted inside the mounting assembly and includes a ball bearing, a movable rod, a conical ring, and an arc-shaped connecting groove. The ball bearing is movably mounted inside the second mounting hole, and the movable rod is located inside the valve pushrod. The limiting assembly is located inside the mounting assembly and includes a limiting plate and a compression spring. The limiting plate is fixedly mounted on the top end of the valve pushrod.
[0007] A further improvement of this utility model is that: a valve head is fixedly connected to the bottom of the valve push rod, and a valve oil seal groove is provided on the outside of the valve push rod.
[0008] A further improvement of this utility model is that: the valve push rod has an internal mounting groove, the movable rod is movably mounted inside the mounting groove, and the top of the movable rod is fixedly connected to a first contact plate.
[0009] A further improvement of this utility model is that a second contact plate is fixedly connected to the bottom of the movable rod, and the second contact plate is movably connected to the top of the compression spring.
[0010] A further improvement of this utility model is that: the conical ring is fixedly connected to the outside of the movable rod, the arc-shaped connecting groove is opened on the outside of the conical ring, and the conical ring is movably connected to the outside of the rolling ball.
[0011] A further improvement of this utility model is that the movable rod is movably connected inside the limiting plate, and the movable rod is fixedly connected to the outside of the limiting block.
[0012] A further improvement of this utility model is that the limiting block is movably connected to the bottom of the limiting plate, and the compression spring is disposed inside the mounting groove.
[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows: 1. This utility model provides a wear-resistant engine valve. Through the combined action of a first mounting hole, a second mounting hole, a rolling ball, a movable rod, and a conical ring, the movable rod drives the conical ring to move and contact the rolling ball, pushing the rolling ball from the second mounting hole into the first mounting hole, so that the rolling ball contacts the hole wall on the engine. This replaces the sliding friction between the engine valve and the engine with the rolling friction between the rolling ball and the engine, reducing friction, thereby reducing wear and extending the service life of the engine valve.
[0014] 2. This utility model provides a wear-resistant engine valve. Through the combined action of rolling balls, moving rod and conical ring, multiple sets of rolling balls are set in the valve push rod. The contact between the rolling balls and the upper hole of the engine reduces the gap between the valve push rod and the upper hole of the engine, thereby improving the alignment between the valve push rod and the upper hole of the engine and reducing vibration. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of the wear-resistant engine valve of this utility model; Figure 2 This is a schematic diagram of the installation structure of the friction component and the limiting component of this utility model; Figure 3 This is a schematic diagram of the internal structure of the mounting component of this utility model; Figure 4 This is a schematic diagram of the friction assembly of this utility model; Figure 5 This is a schematic diagram of the internal structure of this utility model.
[0016] In the diagram: 1. Mounting assembly; 2. Friction assembly; 3. Limiting assembly; 10. Valve pushrod; 11. Valve head; 12. Valve oil seal groove; 13. First mounting hole; 14. Second mounting hole; 15. Mounting groove; 20. Ball bearing; 21. Moving rod; 22. First contact plate; 23. Second contact plate; 24. Conical ring; 25. Arc-shaped connecting groove; 30. Limiting plate; 31. Limiting block; 32. Compression spring. Detailed Implementation
[0017] The present invention will be further described in detail below with reference to embodiments: like Figure 1-5 As shown, this utility model provides a wear-resistant engine valve, including a mounting component 1, a friction component 2, and a limiting component 3. The mounting component 1 is used to install and connect the friction component 2 and the limiting component 3. The friction component 2 reduces the friction between the engine valve and the engine. The limiting component 3 drives the mounting component 1 to move and reset the friction component 2.
[0018] like Figure 2 and Figure 3 As shown, the mounting assembly 1 includes a valve push rod 10, a first mounting hole 13, and a second mounting hole 14. A valve head 11 is fixedly connected to the bottom of the valve push rod 10. The valve head 11 contacts or separates from the inner wall of the engine to open and close the air passage. A valve oil seal groove 12 is provided on the outside of the valve push rod 10, and a mounting groove 15 is provided on the inside of the valve push rod 10. The movable rod 21 is movably installed inside the mounting groove 15. The friction assembly 2 and the limiting assembly 3 are installed through the mounting groove 15.
[0019] like Figure 2-5As shown, the friction assembly 2 is movably installed inside the mounting assembly 1. The friction assembly 2 includes a ball bearing 20, a movable rod 21, a conical ring 24, and an arc-shaped connecting groove 25. The ball bearing 20 is movably installed inside the second mounting hole 14. The movable rod 21 is located inside the valve pushrod 10. A first contact plate 22 is fixedly connected to the top of the movable rod 21, and a second contact plate 23 is fixedly connected to the bottom of the movable rod 21. The second contact plate 23 is movably connected to the top of the compression spring 32. The conical ring 24 is fixedly connected to the outside of the movable rod 21, and the arc-shaped connecting groove 25 is formed outside the conical ring 24. The conical ring 24 is movably connected to the outside of the ball bearing 20. The first mounting hole 13 is located on the outer side of the valve pushrod 10, and the second mounting hole 14 is located on the inner side of the valve pushrod 10. The first mounting hole 13 and the second mounting hole 14 are interconnected. The movable rod 21 is pressed down by the first contact plate 22, which drives the conical ring 24 to move and contact the rolling ball 20. The rolling ball 20 is pushed from the second mounting hole 14 into the first mounting hole 13, replacing the sliding friction between the engine valve and the engine with the rolling friction between the rolling ball 20 and the engine. At the same time, the contact between the rolling ball 20 and the inner wall of the upper hole of the engine reduces the gap between the valve pushrod 10 and the upper hole of the engine, thereby improving the alignment between the valve pushrod 10 and the upper hole of the engine.
[0020] like Figure 2 , Figure 3 and Figure 5 As shown, the limiting component 3 is located inside the mounting component 1. The limiting component 3 includes a limiting plate 30 and a compression spring 32. The limiting plate 30 is fixedly installed at the top of the valve push rod 10. The movable rod 21 is movably connected inside the limiting plate 30. The movable rod 21 is fixedly connected to the outside of the limiting block 31. The limiting block 31 is movably connected to the bottom of the limiting plate 30. The compression spring 32 is located inside the mounting groove 15. The second contact plate 23 at the bottom of the movable rod 21 compresses the compression spring 32. When the first contact plate 22 contacts the limiting plate 30, it will drive the valve push rod 10 to move, causing the valve head 11 at the bottom of the valve push rod 10 to disengage from the inner wall of the engine. At the same time, under the action of the compression spring 32, the limiting block 31 on the movable rod 21 contacts the bottom of the limiting plate 30, causing the movable rod 21 and the ball bearing 20 to reset.
[0021] The working principle of the wear-resistant engine valve will be explained in detail below.
[0022] like Figure 1-5As shown, when the wear-resistant engine valve is working, during the push stroke of the engine cam, the cam contacts the first contact plate 22 at the top of the movable rod 21. The first contact plate 22 presses the movable rod 21 down. When the movable rod 21 moves downward, it drives the conical ring 24 to move and contact the rolling ball 20, pushing the rolling ball 20 from the second mounting hole 14 into the first mounting hole 13. At the same time, the rolling ball 20 enters the arc-shaped connecting groove 25 on the conical ring 24, so that the rolling ball 20 contacts the hole wall on the engine. This replaces the sliding friction between the engine valve and the engine with the rolling friction between the rolling ball 20 and the engine, reducing friction and thus reducing wear, extending the service life of the engine valve. Simultaneously, the contact between the rolling ball 20 and the inner wall of the hole on the engine... The clearance between the valve pushrod 10 and the upper hole of the engine is reduced to improve the alignment between the valve pushrod 10 and the upper hole of the engine and reduce vibration. At the same time, the second contact plate 23 at the bottom of the movable rod 21 compresses the compression spring 32. When the first contact plate 22 contacts the limiting plate 30, it will drive the valve pushrod 10 to move, so that the valve head 11 at the bottom of the valve pushrod 10 disengages from the inner wall of the engine and opens the air passage. When the engine cam enters the return stroke, the spring outside the valve pushrod 10 will reset the valve pushrod 10, so that the valve head 11 contacts the inner wall of the engine and closes the air passage. At the same time, under the action of the compression spring 32, the limiting block 31 on the movable rod 21 contacts the bottom of the limiting plate 30, so that the movable rod 21 and the ball bearing 20 are reset and continue the next stroke.
[0023] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A wear-resistant engine valve, comprising a mounting assembly (1), a friction assembly (2), and a limiting assembly (3), characterized in that: The mounting assembly (1) includes a valve push rod (10), a first mounting hole (13) and a second mounting hole (14). The first mounting hole (13) is located on the outside of the valve push rod (10), and the second mounting hole (14) is located on the inside of the valve push rod (10). The first mounting hole (13) and the second mounting hole (14) are interconnected. The friction assembly (2) is movably mounted inside the mounting assembly (1). The friction assembly (2) includes a ball bearing (20), a movable rod (21), a conical ring (24) and an arc-shaped connecting groove (25). The ball bearing (20) is movably mounted inside the second mounting hole (14). The movable rod (21) is located inside the valve push rod (10). The limiting assembly (3) is located inside the mounting assembly (1). The limiting assembly (3) includes a limiting plate (30) and a compression spring (32). The limiting plate (30) is fixedly mounted on the top of the valve push rod (10).
2. The wear-resistant engine valve according to claim 1, characterized in that: The valve push rod (10) is fixedly connected to the bottom of the valve head (11), and the valve push rod (10) is provided with a valve oil seal groove (12) on the outside.
3. A wear-resistant engine valve according to claim 1, characterized in that: The valve pushrod (10) has an internal mounting groove (15), and the movable rod (21) is movably mounted inside the mounting groove (15). The top of the movable rod (21) is fixedly connected to a first contact plate (22).
4. A wear-resistant engine valve according to claim 1, characterized in that: The bottom of the movable rod (21) is fixedly connected to a second contact plate (23), which is movably connected to the top of the compression spring (32).
5. A wear-resistant engine valve according to claim 1, characterized in that: The conical ring (24) is fixedly connected to the outside of the movable rod (21), the arc-shaped connecting groove (25) is opened on the outside of the conical ring (24), and the conical ring (24) is movably connected to the outside of the rolling ball (20).
6. A wear-resistant engine valve according to claim 1, characterized in that: The movable rod (21) is movably connected inside the limiting plate (30), and the external part of the movable rod (21) is fixedly connected to the limiting block (31).
7. A wear-resistant engine valve according to claim 6, characterized in that: The limiting block (31) is movably connected to the bottom of the limiting plate (30), and the compression spring (32) is disposed inside the mounting groove (15).