An engine piston having a composite low friction material

Abstract

The utility model relates to the field of engine piston, specifically is a kind of engine piston with composite low friction material, including connecting piece, the inner surface wall of connecting piece is all fixedly connected with ball fixed block, the inner surface wall of ball fixed block is rotatably connected with metal ball, rotatably connected with rotating ring between connecting piece, the outer surface wall of rotating ring is equipped with ring groove, the inner surface wall of rotating ring is fixedly connected with inner spline ring, the inner surface wall of connecting piece is all equipped with bolt hole, the inner surface wall of connecting piece is inserted with fixed bolt, the both ends of fixed bolt are threadedly connected with hexagon nut, fixed bolt and hexagon nut are provided with two groups;The utility model is through being provided with separating connecting piece and rotating ring, and then make piston internal structure be obstructed to rotate by oil dirt, can be conveniently cleaned after disassembly, reach the effect that piston rotating structure inside is conveniently cleaned, solve the problem that piston is obstructed to rotate and is not convenient for cleaning due to the humidity reduction dry of lubricating oil.

Description

Technical Field

[0001] This utility model relates to the field of engine pistons, specifically an engine piston with a composite low-friction material. Background Technology

[0002] Engine pistons made of composite low-friction materials are typically made of aluminum alloy. Aluminum alloy pistons are widely used in light industry and high-speed engines because of their light weight, good thermal conductivity and low manufacturing cost. Their lightweight characteristics can reduce inertial drag and improve engine response speed.

[0003] An engine piston disclosed in Chinese Patent No. CN222478817U includes: an internal cooling oil passage arranged annularly within the engine piston; the internal cooling oil passage comprising: a bottom wall located on the side of the internal cooling oil passage near the pin hole; a top wall located on the side of the internal cooling oil passage away from the pin hole, the top wall and bottom wall being opposite each other; and two side walls connecting the bottom wall and top wall. One of the side walls includes: multiple first arc segments and multiple second arc segments, the first arc segments being arcs protruding outward from the internal cooling oil passage, and the second arc segments being arcs concave inward from the internal cooling oil passage, the multiple first arc segments and multiple second arc segments being arranged alternately. The multiple first arc segments and multiple second arc segments being arranged alternately along the height direction increases the heat dissipation area between the internal cooling oil passage and the cooling oil. When the cooling oil flows through the internal cooling oil passage, it generates wave vibrations, improving the cooling efficiency of the cooling oil.

[0004] Existing engine pistons require lubrication after installation inside the engine. However, cleaning the internal structure becomes difficult when dust particles adhere to it or when the lubricating oil becomes damp. Therefore, an engine piston with a composite low-friction material is proposed to address these issues. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes an engine piston with composite low friction material.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: an engine piston with composite low-friction material, including connecting parts, ball bearing fixing blocks are fixedly connected to the inner surface of each connecting part, metal balls are rotatably connected to the inner surface of each ball bearing fixing block, a rotating ring is rotatably connected between the connecting parts, an annular groove is formed on the outer surface of the rotating ring, an inner spline ring is fixedly connected to the inner surface of the rotating ring, bolt holes are formed on the inner surface of each connecting part, fixing bolts are inserted into the inner surface of each connecting part, and hexagonal nuts are threaded to both ends of the fixing bolts, and two sets of fixing bolts and hexagonal nuts are provided.

[0007] Preferably, a connecting rod is fixedly connected to the top of the connector, and a plug block is fixedly connected to the top of the connecting rod. An inner sliding groove is formed on the inner surface wall of the plug block.

[0008] Preferably, a limiting block is fixedly connected to the outer wall of the plug-in block, and an internal rod is fixedly connected to the inner wall of the plug-in block.

[0009] Preferably, an external rod is slidably connected to the outer wall of the built-in rod, and an inner slider is fixedly connected to one end of the external rod.

[0010] Preferably, the inner slider is slidably connected to the inner surface wall of the limiting block, and a locking block is fixedly connected to one side of the inner slider.

[0011] Preferably, a spring is fixedly connected to one side of the inner slider, and one end of the spring is fixedly connected to the plug block.

[0012] Preferably, the outer wall of the plug block is provided with a mounting cover, and the mounting cover has a release groove.

[0013] Preferably, the inner wall of the mounting cover has a snap-fit ​​groove, the top of the mounting cover is fixedly connected to a metal block, and the outer wall of the metal block is fixedly connected to a piston ring.

[0014] The advantages of this utility model are: This invention, by setting up a separate connecting part and rotating ring, makes the piston's internal structure obstructed by oil contamination, allowing for easy disassembly and cleaning. This achieves the effect of convenient self-cleaning of the piston's rotating structure, solving the problem of piston rotation obstruction and difficulty in cleaning caused by the drying of lubricating oil.

[0015] This invention facilitates piston replacement by setting up a convenient plug-in block and mounting cover, and then using a limiting block and a locking block for limiting, thus solving the problem of inconvenient piston replacement after long-term wear. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the connector of this utility model; Figure 3 This is a schematic diagram of the structure of the mounting cover of this utility model; Figure 4 This is a schematic diagram of the structure of the plug-in block of this utility model.

[0018] In the diagram: 1. Connector; 2. Connecting rod; 3. Mounting cover; 4. Metal block; 5. Piston ring; 6. Rotating ring; 7. Ball bearing fixing block; 8. Metal ball bearing; 9. Bolt hole; 10. Fixing bolt; 11. Hexagonal nut; 12. Ring groove; 13. Inner spline ring; 14. Release groove; 15. Snap-fit ​​groove; 16. Insertion block; 17. Limiting block; 18. Inner sliding groove; 19. Internal rod; 20. External rod; 21. Spring; 22. Inner slider; 23. Locking block. Detailed Implementation

[0019] 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 scope of protection of the present utility model.

[0020] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail. This application discloses an engine piston with a composite low-friction material. (Refer to...) Figure 1 and Figure 2 An engine piston with a composite low-friction material includes a connecting member 1. Ball bearing retaining blocks 7 are fixedly connected to the inner wall of each connecting member 1. Metal balls 8 are rotatably connected to the inner wall of each ball bearing retaining block 7. A rotating ring 6 is rotatably connected between the connecting members 1. An annular groove 12 is formed on the outer wall of the rotating ring 6. An inner spline ring 13 is fixedly connected to the inner wall of the rotating ring 6. Bolt holes 9 are formed on the inner wall of each connecting member 1. Fixing bolts 10 are inserted into the inner wall of each connecting member 1. Hexagonal nuts 11 are threaded to both ends of the fixing bolts 10. The fixing bolts 10 and hexagonal nuts 11... 1. Two sets are provided, connected by connector 1, which allows connector 1 to be freely assembled and disassembled. The rotating ring 6 can be rotatably connected to connector 1 via ring groove 12. During this process, the metal ball 8 can rotate on the inner surface of the ball fixing block 7 to assist in the rotation of the rotating ring 6. The inner spline ring 13 can be installed inside the engine. After connector 1 is assembled, fixing bolt 10 can be inserted into bolt hole 9, and then hexagonal nut 11 is fixed to limit connector 1.

[0021] Reference Figure 1 and Figure 4 The top of the connector 1 is fixedly connected to the connecting rod 2, and the top of the connecting rod 2 is fixedly connected to the plug block 16. The inner surface wall of the plug block 16 is provided with an inner sliding groove 18. Through the setting of the plug block 16, the plug block 16 can be separated from the piston structure. Reference Figure 3 and Figure 4 The outer wall of the plug-in block 16 is fixedly connected to the limiting block 17, and the inner wall of the plug-in block 16 is fixedly connected to the built-in rod 19. The limiting block 17 is set so that the limiting block 17 can play an auxiliary limiting role. Reference Figure 3 and Figure 4 An external rod 20 is slidably connected to the outer wall of the built-in rod 19. An inner slider 22 is fixedly connected to one end of the external rod 20. The external rod 20 is set so that it can slide on the outer wall of the built-in rod 19. Reference Figure 3 and Figure 4 The inner slider 22 is slidably connected to the inner surface wall of the limiting block 17. A locking block 23 is fixedly connected to one side of the inner slider 22. With the locking block 23, after the inner slider 22 slides inside the limiting block 17, it can assist in moving the locking block 23. Reference Figure 3 and Figure 4 A spring 21 is fixedly connected to one side of the inner slider 22. One end of the spring 21 is fixedly connected to the plug block 16. The spring 21 is set so that the sliding of the inner slider 22 can drive the spring 21 to be in a compressed state. Reference Figure 3 and Figure 4 The outer wall of the plug-in block 16 is provided with a mounting cover 3. The mounting cover 3 has a release groove 14. By setting the mounting cover 3, the limiting block 17 on the plug-in block 16 can enter the interior of the mounting cover 3 along the snap-fit ​​groove 15. At the same time, during this process, the snap-fit ​​block 23 will be forcefully retracted into the interior of the limiting block 17. After rotating the mounting cover 3, the internal structure of the mounting cover 3 can be used to limit the insertion and removal until the snap-fit ​​block 23 is pushed into the interior of the release groove 14 by the spring 21. At this time, the mounting cover 3 is limited to rotation. When it is necessary to remove the mounting cover 3, the snap-fit ​​block 23 can be pressed into the interior of the limiting block 17 and rotated to disengage from the plug-in block 16. Reference Figure 3 and Figure 4 The inner surface of the mounting cover 3 is provided with a snap-fit ​​groove 15. A metal block 4 is fixedly connected to the top of the mounting cover 3. A piston ring 5 is fixedly connected to the outer surface of the metal block 4. By setting the metal block 4, the aluminum alloy metal block 4 can play the role of lightweight piston.

[0022] Working principle: The connector 1 allows for free assembly and disassembly. The rotating ring 6 can be rotatably connected to the connector 1 via the ring groove 12. During this process, the metal ball bearing 8 rotates on the inner surface of the ball bearing fixing block 7, thus assisting in the lubrication of the rotating ring 6. The inner spline ring 13 serves for internal engine mounting. After the connector 1 is assembled, the fixing bolt 10 can be inserted into the bolt hole 9, and then the hexagonal nut 11 is fixed to secure the connector 1. The insertion block 16 allows it to detach from the piston structure. The external rod 20 allows it to slide on the outer surface of the internal rod 19. The locking block 23 keeps the inner slider 22 within the limiting block 17. After sliding, it can assist in moving the locking block 23. The spring 21 is set so that the sliding of the inner slider 22 can cause the spring 21 to be in a compressed state. The mounting cover 3 is set so that the limiting block 17 on the plug-in block 16 can enter the interior of the mounting cover 3 along the locking groove 15. At the same time, the locking block 23 will be forced to retract into the interior of the limiting block 17. After rotating the mounting cover 3, the internal structure of the mounting cover 3 can be used to limit insertion and removal until the locking block 23 is pushed into the interior of the release groove 14 by the spring 21. At this time, the mounting cover 3 is limited to rotation. When it is necessary to remove the mounting cover 3, the locking block 23 can be pressed into the interior of the limiting block 17 and rotated to disengage from the plug-in block 16. The metal block 4 is set so that the aluminum alloy metal block 4 can act as a lightweight piston.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An engine piston with a composite low-friction material, comprising a connecting member (1), characterized in that: The inner surface of each connector (1) is fixedly connected with a ball bearing fixing block (7), and the inner surface of the ball bearing fixing block (7) is rotatably connected with a metal ball bearing (8). A rotating ring (6) is rotatably connected between the connectors (1). The outer surface of the rotating ring (6) is provided with a ring groove (12). The inner surface of the rotating ring (6) is fixedly connected with an inner spline ring (13). The inner surface of each connector (1) is provided with a bolt hole (9). A fixing bolt (10) is inserted into the inner surface of the connector (1). The two ends of the fixing bolt (10) are threaded with hexagonal nuts (11). There are two sets of fixing bolts (10) and hexagonal nuts (11).

2. An engine piston with a composite low-friction material according to claim 1, characterized in that: The top of the connector (1) is fixedly connected to a connecting rod (2), and the top of the connecting rod (2) is fixedly connected to a plug block (16). The inner surface wall of the plug block (16) is provided with an inner sliding groove (18).

3. An engine piston with a composite low-friction material according to claim 2, characterized in that: The outer wall of the plug-in block (16) is fixedly connected to a limiting block (17), and the inner wall of the plug-in block (16) is fixedly connected to an internal rod (19).

4. An engine piston with a composite low-friction material according to claim 3, characterized in that: An external rod (20) is slidably connected to the outer wall of the built-in rod (19), and an inner slider (22) is fixedly connected to one end of the external rod (20).

5. An engine piston with a composite low-friction material according to claim 4, characterized in that: The inner slider (22) is slidably connected to the inner surface wall of the limiting block (17), and a locking block (23) is fixedly connected to one side of the inner slider (22).

6. An engine piston with a composite low-friction material according to claim 5, characterized in that: A spring (21) is fixedly connected to one side of the inner slider (22), and one end of the spring (21) is fixedly connected to the plug block (16).

7. An engine piston with a composite low-friction material according to claim 2, characterized in that: The outer wall of the plug block (16) is provided with a mounting cover (3), and the mounting cover (3) has a release groove (14).

8. An engine piston with a composite low-friction material according to claim 7, characterized in that: The inner surface of the mounting cover (3) is provided with a snap-fit ​​groove (15), and a metal block (4) is fixedly connected to the top of the mounting cover (3). A piston ring (5) is fixedly connected to the outer surface of the metal block (4).

Images