Piston pin easy to clean

Abstract

The utility model provides a piston pin easy to clean, and belongs to the technical field of piston pins. The hollow groove and the circular groove are formed in the circumferential surface of the piston pin; the lantern ring is located in the circular groove; the hollow groove and the circular groove are formed in the circumferential surface of the piston pin, the lantern ring is arranged in the circular groove, and the groove is formed in the circumferential inner wall of the piston pin, so that the structure of the piston pin is more reasonable, cleaning of the piston pin is facilitated, in the working process of the piston pin, due to the lantern ring, dirt can be effectively prevented from entering the piston pin, and the service life of the piston pin is prolonged. Therefore, the maintenance difficulty and the maintenance cost of the piston pin are reduced, meanwhile, the arrangement of the groove is also beneficial to the circulation of cleaning liquid, and the cleaning effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of piston pins, and particularly relates to a piston pin that is easy to clean. Background Art

[0002] The piston pin is an important part in an internal combustion engine. It connects the piston and the connecting rod, enabling the reciprocating motion of the piston in the cylinder to be converted into the rotational motion of the connecting rod, and then outputting power through the crankshaft. The piston pin is usually cylindrical, installed in the pin hole of the piston, and has grooves or holes at both ends for installing the bearings of the connecting rod.

[0003] The patent document with the publication number "CN212131277U" records "a piston pin that is easy to clean, including a piston pin body. A spiral groove is provided on the surface of the piston pin body. A straight groove communicating with the bottom of the spiral groove is provided at the end of the piston pin. The straight groove is perpendicular to the axis of the piston pin body. An arc-shaped groove is provided on the surface of the piston pin body, located on both sides of the spiral groove and communicating with the spiral groove. There are several spiral grooves, and the distance between adjacent two spiral grooves is the same. The cross-sections of the straight groove, the spiral groove, and the groove are arc-shaped. The provided spiral groove and straight groove can be limited in the through hole of the piston skirt, that is, a limiting protrusion matching with the spiral groove and the straight groove is integrally formed on the through hole. The piston pin body of the present utility model first rotates into the through hole and then rotates horizontally to prevent the present utility model from falling out of the through hole; the cross-sections of the straight groove and the spiral groove are both arc-shaped, making the flushing more convenient than a right-angle groove".

[0004] The above-mentioned patent piston pin body first rotates into the through hole and then rotates horizontally to prevent the present utility model from falling out of the through hole. However, the above-mentioned patent has a spiral groove opening, and when cleaning by pulling out, a special tool is required for cleaning, which will waste cleaning time. Content of the Utility Model

[0005] The purpose of the present utility model is to provide a piston pin that is easy to clean, aiming to solve the problem that in the prior art, due to the spiral groove opening, a special tool is required for cleaning when cleaning by pulling out, which will waste cleaning time.

[0006] To achieve the above purpose, the present utility model provides the following technical solutions:

[0007] A piston pin that is easy to clean, including:

[0008] A piston pin;

[0009] A hollow groove and a circular groove, both of which are provided on the circumferential surface of the piston pin;

[0010] A collar, which is located in the circular groove;

[0011] A groove is provided on the circumferential inner wall of the piston pin.

[0012] As a preferred solution of the present utility model, tapered grooves are provided on both sides of the piston pin.

[0013] As a preferred solution of the present utility model, circular holes are provided on the circumferential surface of the piston pin.

[0014] As a preferred solution of the present utility model, the distance between the collar and the inner wall of the circular groove is 2 mm.

[0015] As a preferred solution of the present utility model, the collar matches the circular groove.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. In this solution, hollow grooves and circular grooves are provided on the circumferential surface of the piston pin, a collar is arranged in the circular groove, and a groove is provided on the circumferential inner wall of the piston pin, making the structure of the piston pin more reasonable and facilitating the cleaning of the piston pin. During the operation of the piston pin, due to the presence of the collar, dirt can be effectively prevented from entering the interior of the piston pin, thereby reducing the maintenance difficulty and cost of the piston pin. At the same time, the setting of the groove is also beneficial to the circulation of the cleaning liquid, improving the cleaning effect.

[0018] 2. In this solution, tapered grooves are provided on both sides of the piston pin, and circular holes are provided on the circumferential surface, further improving the cleaning effect of the piston pin. The setting of the tapered grooves and circular holes enables the cleaning liquid to flow more smoothly to all parts of the piston pin, thereby effectively cleaning away dirt and impurities. In addition, the distance between the collar and the inner wall of the circular groove is 2 mm, and the collar matches the circular groove, which can ensure the stability of the collar in the circular groove and avoid the problem of the collar falling off due to vibration or other reasons during operation, improving the reliability of the piston pin in use. Description of the Drawings

[0019] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0020] Figure 1 is the front view three-dimensional drawing of the present utility model;

[0021] Figure 2 is the exploded view of the present utility model;

[0022] Figure 3 is the cross-sectional view of the present utility model;

[0023] Figure 4 is of the present utility modelFigure 3 Partial enlarged view of part A

[0024] In the figure: 1, piston pin; 2, circular hole; 3, hollow groove; 4, collar; 5, tapered groove; 6, circular groove; 7, recess Specific implementation mode

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention

[0026] Embodiment 1

[0027] Please refer to Figures 1-4 , the present invention provides the following technical solutions

[0028] A piston pin that is easy to clean, comprising

[0029] Piston pin 1

[0030] Hollow groove 3 and circular groove 6, both of which are opened on the circumferential surface of piston pin 1

[0031] Collar 4, which is located in circular groove 6

[0032] Recess 7, which is opened on the circumferential inner wall of piston pin 1

[0033] In a specific embodiment of the present utility model, the piston pin 1 is made of alloy steel with high strength and wear resistance to ensure long-term stable operation in a high-temperature and high-pressure environment. The main body of the piston pin 1 is cylindrical, and both ends are adapted to the piston and the small end of the connecting rod. The dimensions match those of the standard piston pin 1, ensuring good mechanical connection performance. Two hollow grooves 3 are evenly opened on the outer circumferential surface of the piston pin 1, which not only does not hinder the normal operation of the piston pin 1 but also effectively increases the oil flow path on the surface of the piston pin 1, facilitating the oil to carry away the particles generated by wear and reducing carbon deposition. The circular groove 6 communicates with the hollow groove 3 and is used to install the collar 4. The design of the circular groove 6 ensures the stable embedding of the collar 4. The collar 4 is installed closely against the inner wall of the circular groove 6. Its function is to enhance the sealing between the piston pin 1 and the small end of the connecting rod or the piston hole, reduce the wear of the direct contact surface, facilitate separate replacement, and reduce maintenance costs. A groove 7 is drilled on the inner wall of the piston pin 1 to improve the cleaning efficiency. The groove 7 can not only guide and store the cleaning liquid but also, through the pumping effect generated during the reciprocating motion of the piston, push the cleaning liquid to every corner of the contact area between the piston pin 1 and the small end of the connecting rod, effectively removing the accumulated dirt and residues and keeping the interior clean. This device is convenient for installation and disassembly, and the opening facilitates later cleaning by someone, enhancing the lubricity and wear resistance of the piston pin 1 and greatly facilitating the cleaning and maintenance process, which improves the overall efficiency of the engine and extends its service life.

[0034] For details, please refer to Figure 1 Conical grooves 5 are provided on both sides of the piston pin 1.

[0035] In this embodiment: The conical grooves 5 reduce direct metal contact, lower wear, and can more effectively capture and discharge the particles generated by wear, preventing them from causing secondary wear during operation by circulating.

[0036] For details, please refer to Figure 1 A circular hole 2 is provided on the circumferential surface of the piston pin 1.

[0037] In this embodiment: The circular hole 2 can be used to reduce weight, effectively reducing the overall mass of the piston pin 1, thereby reducing the inertial force and improving the response speed and fuel economy of the engine.

[0038] For details, please refer to Figure 4 The distance between the collar 4 and the inner wall of the circular groove 6 is 2 mm.

[0039] In this embodiment: The gap between the collar 4 and the circular groove 6 is 2 mm, ensuring that they can be assembled smoothly and that the stability is not affected by too large a gap or difficult to assemble due to being too tight, achieving a good clearance fit.

[0040] For details, please refer to Figures 1-4 The collar 4 matches the circular groove 6.

[0041] In this embodiment, the collar 4 matches the circular groove 6, so that there will be no left - right shaking during operation.

[0042] The working principle and usage process of the present utility model: The lubricating oil is evenly distributed on the surface of the piston pin 1 through the special design path of the hollow groove 3 and the circular groove 6, reducing the friction between the piston pin 1 and the piston and the small end of the connecting rod. With the reciprocating movement of the piston, the slight floating of the collar 4 in the circular groove 6 increases the stability of the oil film. At the same time, when the piston pin 1 rotates, the design of the hollow groove 3 and the circular groove 6 promotes the continuous circulation of the oil fluid, maintaining a good lubrication effect. During regular maintenance, due to the special design on the surface of the piston pin 1, external cleaning equipment can more easily reach all corners of the piston pin 1, improving the cleaning efficiency and ensuring that the piston pin 1 always maintains a good working state.

[0043] Finally, it should be noted that the above - mentioned are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A piston pin that is easy to clean, characterized in that: include: Piston pin (1); A hollow groove (3) and a circular groove (6), wherein the hollow groove (3) and the circular groove (6) are both formed on the circumferential surface of the piston pin (1); A collar (4), wherein the collar (4) is located in the circular groove (6); A groove (7) is provided on the circumferential inner wall of the piston pin (1).

2. The easy-to-clean piston pin according to claim 1, characterized in that: Conical grooves (5) are provided on both sides of the piston pin (1).

3. The easy-to-clean piston pin according to claim 2, characterized in that: A circular hole (2) is provided on the circumferential surface of the piston pin (1).

4. The easy-to-clean piston pin according to claim 3, characterized in that: The distance between the collar (4) and the inner wall of the circular groove (6) is 2 mm.

5. The easy-to-clean piston pin according to claim 4, characterized in that: The collar (4) matches the circular groove (6).

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