Self-lubricating high-efficiency piston pin

By setting a fixing tube and fixing components inside the piston pin, and utilizing the cooperation of the positioning ring, mounting ring, fixing ring, sealing ring and connecting ring, a self-lubricating function is achieved, which solves the wear and jamming problems caused by lubricating oil consumption, and improves the service life and stability of the piston pin.

CN224364360UActive Publication Date: 2026-06-16HANGZHOU DOUBLE ELEPHANT AUTO PARTS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU DOUBLE ELEPHANT AUTO PARTS CO LTD
Filing Date
2025-06-10
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Existing piston pins are prone to lubrication loss after prolonged use, leading to increased wear and jamming, which affects engine life and efficiency.

Method used

A high-efficiency piston pin with self-lubricating function is designed. By setting a fixed tube and a fixed component inside the piston pin body, and utilizing the cooperation of a positioning ring, a mounting ring, a fixing ring, a sealing ring and a connecting ring, the storage of lubricating oil and the self-lubricating effect are achieved.

Benefits of technology

This ensures a continuous supply of lubricating oil to the piston pin during long-term use, preventing accelerated wear and jamming, and improving the wear resistance and stability of the piston pin.

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Abstract

The utility model discloses a high -efficient piston pin of self -lubricating function, and its technical scheme main points are: including piston pin body, the outer wall surface of piston pin body is seted up and has the through -hole, and the inside of piston pin body is provided with two fixed tubes, the positioning ring is fixedly connected in one end of fixed tube, and the outer wall surface of fixed ring is fixedly connected with the mounting ring, the fixed component is set in one end of fixed tube, after the staff spreads lubricating oil on the outside of fixed tube, uses fixed part to fix fixed tube in the inside of piston pin body again, at this moment, through the cooperation of positioning ring, mounting ring, piston pin body and fixed tube, can store in and out lubricating oil, so that piston pin body uses, at this moment, lubricating oil can flow out through the through -hole, so that piston pin body uses to reach the effect of self -lubricating, avoids the lubricating oil on the surface of piston pin body and appears the phenomenon such as wear and tear aggravation, jam and so on after long -term use consumption.
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Description

Technical Field

[0001] This utility model relates to the field of piston pin technology, specifically to a high-efficiency piston pin with self-lubricating function. Background Technology

[0002] As a crucial component connecting the piston and connecting rod, the piston pin withstands significant alternating loads and high-speed reciprocating motion during operation, thus requiring excellent wear resistance, fatigue resistance, and lubrication properties. Currently, most piston pins are made of cemented carbide or have surface plating to enhance wear resistance.

[0003] However, after prolonged use, the lubricating oil in the piston pin is easily depleted, leading to increased wear and jamming during use, which affects engine life and efficiency. Therefore, it is necessary to design a high-efficiency piston pin with self-lubricating function to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency piston pin with self-lubricating function to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A self-lubricating, high-efficiency piston pin, comprising:

[0007] The piston pin body has a through hole on its outer wall surface and two fixing tubes are provided inside the piston pin body.

[0008] A positioning ring is fixedly connected to one end of the fixed tube, and an installation ring is fixedly connected to the outer wall surface of the fixed tube;

[0009] A fixing component is disposed at one end of the fixing tube and is used to fix the fixing tube.

[0010] Preferably, the fixing component includes:

[0011] A retaining ring is fixedly connected to one end of a retaining tube, and retaining grooves are provided at both ends of the piston pin body.

[0012] Preferably, one end of the fixing ring has a plurality of slots, and the fixing ring is threadedly connected to the fixing slots.

[0013] Preferably, a sealing ring is fixedly connected to one end of the fixing ring, and a sealing ring is fixedly connected to the outer wall surface of the positioning ring.

[0014] Preferably, a support ring is fixedly connected to the inner wall surface of the piston pin body, and a connecting ring is fixedly connected to both the left and right ends of the support ring.

[0015] Preferably, the outer wall of the positioning ring is provided with a connecting groove, and the connecting ring is movably fitted together with the connecting groove.

[0016] In the above technical solution, the self-lubricating high-efficiency piston pin provided by this utility model has the following beneficial effects:

[0017] By setting up a fixing tube, after the worker applies lubricating oil to the outside of the fixing tube, and then uses fixing components to fix the fixing tube inside the piston pin body, the positioning ring, mounting ring, piston pin body and fixing tube work together to store and release lubricating oil. When the piston pin body is in use, the lubricating oil can flow out through the through hole, so that the piston pin body achieves a self-lubricating effect during use. This avoids the piston pin body from experiencing accelerated wear and jamming after the lubricating oil on the outer surface of the piston pin body is consumed over a long period of use.

[0018] By incorporating a retaining ring, the worker can easily fix the retaining ring inside the piston pin body after threading it into the retaining groove. A retaining groove allows the worker to rotate the retaining ring, facilitating its assembly and disassembly. A sealing ring seals the space between the retaining ring and the piston pin body after the retaining tube is fixed inside, preventing lubricating oil from leaking out through the retaining groove. A sealing ring seals the space between the positioning ring and the piston pin body after the retaining tube is fixed inside. A connecting ring, when fitted into the connecting groove, supports the positioning ring, thus improving the stability of the retaining tube inside the piston pin body. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 A three-dimensional structural diagram of an embodiment of a self-lubricating high-efficiency piston pin according to this utility model. Figure 1 .

[0021] Figure 2 A schematic diagram of the support ring structure provided for an embodiment of a high-efficiency piston pin with self-lubricating function according to this utility model. Figure 2 .

[0022] Figure 3A schematic diagram of the fixing tube structure provided for an embodiment of a high-efficiency piston pin with self-lubricating function according to this utility model. Figure 3 .

[0023] Figure 4 A schematic diagram of the connecting ring structure provided for an embodiment of a high-efficiency piston pin with self-lubricating function according to this utility model. Figure 4 .

[0024] 1. Piston pin body; 2. Through hole; 3. Fixing tube; 4. Positioning ring; 5. Mounting ring; 6. Fixing ring; 7. Fixing groove; 8. Sealing ring; 9. Sealing ring; 10. Support ring; 11. Connecting ring; 12. Connecting groove; 13. Slot. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-4 As shown in the figure, the present invention provides a self-lubricating high-efficiency piston pin, including a piston pin body 1, a through hole 2 on the outer wall surface of the piston pin body 1, two fixing tubes 3 inside the piston pin body 1, a positioning ring 4 fixedly connected to one end of the fixing tube 3, an installation ring 5 fixedly connected to the outer wall surface of the fixing tube 3, and a fixing component provided at one end of the fixing tube 3 for fixing the fixing tube 3.

[0027] In this embodiment, by setting a fixing tube 3, after the worker applies lubricating oil to the outside of the fixing tube 3, and then uses a fixing component to fix the fixing tube 3 inside the piston pin body 1, the positioning ring 4, the mounting ring 5, the piston pin body 1 and the fixing tube 3 work together to store and release the lubricating oil. When the piston pin body 1 is in use, the lubricating oil can flow out through the through hole 2, so that the piston pin body 1 achieves a self-lubricating effect during use. This avoids the piston pin body 1 from experiencing increased wear and jamming after long-term use and consumption of the lubricating oil on its outer surface.

[0028] Specifically, the fixing component includes a fixing ring 6, which is fixedly connected to one end of the fixing tube 3. Fixing grooves 7 are provided at both ends of the piston pin body 1, and threads are provided on the outer wall surface of the fixing ring 6 and the inner wall surface of the fixing groove 7.

[0029] In this embodiment, by setting a fixing ring 6, when the worker threaded the fixing ring 6 into the inside of the fixing groove 7, it is convenient to fix the fixing tube 3 into the inside of the piston pin body 1 later.

[0030] Specifically, one end of the retaining ring 6 is provided with several slots 13, and the retaining ring 6 is threadedly connected to the retaining slots 7;

[0031] In this embodiment, by setting the slot 13, the staff can rotate the fixing ring 6 through the slot 13, which makes it easier to disassemble and assemble the fixing ring 6 later.

[0032] Specifically, a sealing ring 8 is fixedly connected to one end of the fixing ring 6, and a sealing ring 9 is fixedly connected to the outer wall surface of the positioning ring 4;

[0033] In this embodiment, by setting a sealing ring 8, when the fixing tube 3 is fixed inside the piston pin body 1, the sealing ring 8 can seal the fixing ring 6 and the piston pin body 1, thereby preventing the lubricating oil outside the fixing tube 3 from flowing out through the fixing groove 7.

[0034] Specifically, a support ring 10 is fixedly connected to the inner wall of the piston pin body 1, and a connecting ring 11 is fixedly connected to both the left and right ends of the support ring 10.

[0035] In this embodiment, by setting a sealing ring 9, when the fixing tube 3 is fixed inside the piston pin body 1, the sealing ring 9 can seal the positioning ring 4 and the piston pin body 1.

[0036] Specifically, the outer wall of the positioning ring 4 is provided with a connecting groove 12, and the connecting ring 11 is movably fitted together with the connecting groove 12;

[0037] In this embodiment, by setting a connecting ring 11, when the connecting ring 11 is movably sleeved with the connecting groove 12, the connecting ring 11 can support the positioning ring 4, thereby improving the stability of the fixing tube 3 fixed inside the piston pin body 1.

[0038] Working steps: 1. By setting up the fixing tube 3, after the worker applies lubricating oil to the outside of the fixing tube 3, and then uses the fixing component to fix the fixing tube 3 inside the piston pin body 1, the positioning ring 4, the mounting ring 5, the piston pin body 1 and the fixing tube 3 work together to store and release the lubricating oil. When the piston pin body 1 is in use, the lubricating oil can flow out through the through hole 2, so that the piston pin body 1 achieves a self-lubricating effect during use, and avoids the piston pin body 1 from experiencing accelerated wear and jamming after long-term use and consumption of the lubricating oil on the outer surface of the piston pin body 1.

[0039] Second, by setting a fixing ring 6, after the worker threaded the fixing ring 6 into the inside of the fixing groove 7, it is convenient to fix the fixing tube 3 into the inside of the piston pin body 1 later. By setting a slot 13, the worker can rotate the fixing ring 6 through the slot 13, which is convenient for the worker to disassemble and assemble the fixing ring 6 later. By setting a sealing ring 8, after the fixing tube 3 is fixed into the inside of the piston pin body 1, the sealing ring 8 can seal between the fixing ring 6 and the piston pin body 1, thereby preventing the lubricating oil outside the fixing tube 3 from flowing out through the fixing groove 7. By setting a sealing ring 9, after the fixing tube 3 is fixed into the inside of the piston pin body 1, the sealing ring 9 can seal between the positioning ring 4 and the piston pin body 1. By setting a connecting ring 11, after the connecting ring 11 is movably fitted with the connecting groove 12, the connecting ring 11 can support the positioning ring 4, thereby improving the stability of the fixing tube 3 fixed into the inside of the piston pin body 1.

[0040] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A self-lubricating high efficiency piston pin, characterized by, Include: Piston pin body (1), the outer wall surface of the piston pin body (1) is provided with a through hole (2), the inside of the piston pin body (1) is provided with two fixed tubes (3); Positioning ring (4), the positioning ring (4) is fixedly connected to one end of the fixed tube (3), and the outer wall surface of the fixed tube (3) is fixedly connected with a mounting ring (5); The fixed assembly is arranged at one end of the fixed tube (3), and is used for fixing the fixed tube (3).

2. The self-lubricating high efficiency piston pin according to claim 1, wherein, The fixed assembly comprises: Fixed ring (6), the fixed ring (6) is fixedly connected to one end of the fixed tube (3), and the left and right ends of the piston pin body (1) are provided with fixed grooves (7).

3. The self-lubricating high efficiency piston pin according to claim 2, wherein, The one end of the fixed ring (6) is provided with a plurality of clamping grooves (13), and the fixed ring (6) is screwed together with the fixed groove (7).

4. The self-lubricating high efficiency piston pin according to claim 3, wherein, The one end of the fixed ring (6) is fixedly connected with a sealing ring (8), and the outer wall surface of the positioning ring (4) is fixedly connected with a sealing ring (9).

5. The self-lubricating high efficiency piston pin of claim 3, wherein, The inner wall surface of the piston pin body (1) is fixedly connected with a support ring (10), and the left and right ends of the support ring (10) are fixedly connected with a connecting ring (11).

6. The self-lubricating high efficiency piston pin according to claim 5, wherein, The outer wall surface of the positioning ring (4) is provided with a connecting groove (12), and the connecting ring (11) and the connecting groove (12) are movably sleeved together.