Piston pin for heat dissipation

Abstract

The utility model provides a piston pin for heat dissipation, which belongs to the technical field of piston pins and comprises a piston pin body, and a storage sliding groove is formed in the piston pin body. The number of the threaded sliding blocks is two, and the two threaded sliding blocks are both connected into the storage sliding groove in a sliding mode; the multiple sets of heat dissipation assemblies are arranged, the multiple sets of heat dissipation assemblies are arranged in the two threaded sliding blocks correspondingly, and each set of heat dissipation assembly comprises a rotating groove, a heat dissipation rod, a first rotating shaft and a second rotating shaft; by using the device, the screw rod is controlled to rotate, the heat dissipation rod is indirectly driven to extend out of the storage sliding groove, the contact area between the device and the outside is increased through the heat dissipation rod, the heat dissipation performance of the device is effectively improved, and the situation that the fit clearance between the connecting rod and the piston is increased due to the fact that the piston pin generates high temperature during working is avoided. And the sealing performance of the engine is not influenced.

Description

Technical Field

[0001] The utility model belongs to the technical field of piston pins, and particularly relates to a piston pin for heat dissipation. Background Technique

[0002] In the field of automotive engineering, a piston pin is a small shaft that connects the piston and the connecting rod, also known as a piston connecting rod pin; the piston pin plays an important role in an internal combustion engine. It converts the motion of the piston into the motion of the connecting rod, thereby driving the crankshaft to rotate and completing the working cycle of the engine; the piston pin needs to have high strength and wear resistance to withstand high-temperature and high-pressure environments; it is usually made of wear-resistant materials such as alloy steel and may be subjected to special surface treatments such as chrome plating or nitriding to improve its durability; in automotive repair and maintenance, the condition inspection and proper replacement of the piston pin are important parts for maintaining the engine performance and extending its service life;

[0003] In the prior art, the piston pin is an important part connecting the piston and the connecting rod, and its main function is to transmit the force between the piston and the connecting rod; due to poor heat dissipation, the piston pin will generate a relatively high temperature during operation, which may cause the clearance between the connecting rod and the piston to increase, thereby affecting the sealing performance of the engine. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a piston pin for heat dissipation, aiming to solve the problem that in the prior art, the piston pin is an important part connecting the piston and the connecting rod, and its main function is to transmit the force between the piston and the connecting rod; due to poor heat dissipation, the piston pin will generate a relatively high temperature during operation, which may cause the clearance between the connecting rod and the piston to increase, thereby affecting the sealing performance of the engine.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A piston pin for heat dissipation, comprising:

[0007] A piston pin body, in which a receiving chute is provided;

[0008] Threaded sliders, there are two of them, and both of the threaded sliders are slidably connected in the receiving chute;

[0009] The heat dissipation components are provided in multiple groups. The multiple groups of heat dissipation components are respectively arranged in two threaded sliders. Each group of the heat dissipation components includes a rotating groove, a heat dissipation rod, a first rotating shaft and a second rotating shaft. There are two second rotating shafts and two springs respectively. The rotating groove is opened on the circumferential surface of the threaded slider. The two second rotating shafts are respectively rotatably connected to the inner walls on both sides of the rotating groove. The first rotating shaft is fixedly connected to the closer ends of the two second rotating shafts. The heat dissipation rod is fixedly connected to the circumferential surface of the first rotating shaft. The two springs are respectively fixedly connected to the two side ends of the first rotating shaft. The two springs are respectively fixedly connected to the inner walls on both sides of the rotating groove.

[0010] As a preferred solution of the present utility model, two screw rods are rotatably connected in the piston pin body. Thread grooves are opened on the circumferential surfaces of the two screw rods. The two threaded sliders are respectively threadedly connected to the circumferential surfaces of the two screw rods.

[0011] As a preferred solution of the present utility model, a plurality of limiting chutes are opened on the circumferential inner wall of the receiving chute. Two convex blocks are integrally formed on the circumferential surfaces of the two threaded sliders. The plurality of convex blocks are respectively slidably connected in the plurality of limiting chutes.

[0012] As a preferred solution of the present utility model, a connecting rod is fixedly connected in the two screw rods.

[0013] As a preferred solution of the present utility model, hexagonal grooves are opened at the ends of the two screw rods.

[0014] As a preferred solution of the present utility model, the plurality of heat dissipation rods are all made of aluminum alloy material.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. In this solution, by using this device, controlling the rotation of the screw rod indirectly drives the heat dissipation rod to extend out of the receiving chute. By increasing the contact area between this device and the outside world through the heat dissipation rod, the heat dissipation performance of this device is effectively improved, avoiding the high temperature generated by the piston pin during work, which may cause the increase of the clearance between the connecting rod and the piston and will not affect the sealing performance of the engine.

[0017] 2. In this solution, when the threaded slider slides in the receiving chute and the heat dissipation rod slides out of the receiving chute, at this time, through the elastic force of the spring, the first rotating shaft is driven to rotate. The first rotating shaft drives the heat dissipation rod to rotate, and the heat dissipation rod opens, improving the heat dissipation performance of the piston pin. Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0019] Figure 1 is a perspective view of the present utility model;

[0020] Figure 2 is a cross-sectional view of the present utility model;

[0021] Figure 3 is an exploded cross-sectional view of the present utility model;

[0022] Figure 4 is the present utility model Figure 3 a partial enlarged view of part A in.

[0023] In the figure: 1, piston pin body; 2, storage chute; 3, limit chute; 4, threaded slider; 5, screw rod; 6, hexagonal groove; 7, rotating groove; 8, heat dissipation rod; 9, first rotating shaft; 10, second rotating shaft; 11, spring; 12, connecting rod. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment

[0026] Please refer to Figures 1 - 4 , the present utility model provides the following technical solutions:

[0027] A piston pin for heat dissipation, comprising:

[0028] A piston pin body 1, with a storage chute 2 provided inside the piston pin body 1;

[0029] Threaded sliders 4, there are two of them, and both threaded sliders 4 are slidably connected inside the storage chute 2;

[0030] Heat dissipation components, there are multiple groups of them, and multiple groups of heat dissipation components are respectively arranged inside the two threaded sliders 4. Each group of heat dissipation components includes a rotating groove 7, a heat dissipation rod 8, a first rotating shaft 9 and a second rotating shaft 10. There are two second rotating shafts 10 and two springs 11. The rotating groove 7 is opened on the circumferential surface of the threaded slider 4. The two second rotating shafts 10 are respectively rotatably connected to the inner walls on both sides of the rotating groove 7. The first rotating shaft 9 is fixedly connected to the closer ends of the two second rotating shafts 10. The heat dissipation rod 8 is fixedly connected to the circumferential surface of the first rotating shaft 9. The two springs 11 are respectively fixedly connected to the two side ends of the first rotating shaft 9, and the two springs 11 are respectively fixedly connected to the inner walls on both sides of the rotating groove 7.

[0031] In a specific embodiment of the present utility model, the piston pin body 1 is installed inside the piston and the connecting rod. The receiving chute 2 is used to connect the threaded slider 4. The screw rod 5 is in threaded cooperation with the threaded slider 4. By rotating the screw rod 5, the threaded slider 4 is driven to slide inside the receiving chute 2. The limiting chute 3 is used to limit the threaded slider 4 to prevent it from rotating. When the threaded slider 4 slides outwards inside the receiving chute 2, the heat dissipation rod 8 rotates under the elastic force of the spring 11. The heat dissipation rod 8 rotates to contact the external environment, increasing the contact area between the device and the outside world. At the same time, the heat dissipation rod 8 is made of aluminum alloy material, which has good heat conduction performance, improving the heat dissipation of the device. The rotating groove 7 in the heat dissipation assembly is opened on the circumferential surface of the threaded slider 4. When the heat dissipation rod 8 is retracted inside the receiving chute 2, it is necessary to overcome the elastic force of the spring 11. When the threaded slider 4 slides inside the receiving chute 2 and the heat dissipation rod 8 slides out of the receiving chute 2, at this time, under the elastic force of the spring 11, the first rotating shaft 9 is driven to rotate, and the first rotating shaft 9 drives the heat dissipation rod 8 to rotate, and the heat dissipation rod 8 opens, improving the heat dissipation performance of the piston pin.

[0032] Specifically, please refer to Figures 1 - 4 , two screw rods 5 are rotatably connected inside the piston pin body 1, and threaded grooves are opened on the circumferential surfaces of the two screw rods 5. Two threaded sliders 4 are respectively threadedly connected to the circumferential surfaces of the two screw rods 5.

[0033] In this embodiment: The screw rod 5 is in threaded cooperation with the threaded slider 4. By rotating the screw rod 5, the threaded slider 4 is driven to slide inside the receiving chute 2.

[0034] Specifically, please refer to Figures 1 - 4 , a plurality of limiting chutes 3 are opened on the circumferential inner wall of the receiving chute 2. Two protrusions are integrally formed on the circumferential surfaces of the two threaded sliders 4, and the plurality of protrusions are respectively slidably connected inside the plurality of limiting chutes 3.

[0035] In this embodiment: The limiting chute 3 is used to limit the threaded slider 4 to prevent it from rotating. The protrusions integrally formed on the circumferential surface of the threaded slider 4 are slidably connected to the limiting chute 3.

[0036] Specifically, please refer to Figures 1 - 4 , a connecting rod 12 is fixedly connected inside the two screw rods 5.

[0037] In this embodiment: The connecting rod 12 plays a role in connecting the two screw rods 5, and the two screw rods 5 rotate simultaneously.

[0038] Specifically, please refer to Figures 1 - 4 , hexagonal grooves 6 are opened at the ends of the two screw rods 5.

[0039] In this embodiment: By opening the hexagonal groove 6, it is convenient to connect a tool to the hexagonal groove 6 and use the tool to rotate the screw rod 5.

[0040] For details, please refer to Figures 1 - 4 , and multiple heat dissipation rods 8 are all made of aluminum alloy material.

[0041] In this embodiment: The aluminum alloy material has good heat conduction performance, which can conduct the heat in the piston pin body 1 and improve the heat dissipation of the piston pin body 1.

[0042] The working principle and usage process of the present utility model: When this device is in use, first install the piston pin body 1 into the connecting rod and the piston. After the connection is completed, insert a tool into the hexagonal groove 6 and drive the screw rod 5 to rotate by rotating the tool. When the screw rod 5 rotates, it drives the threaded slider 4 to slide in the storage chute 2, so that the heat dissipation rod 8 extends out of the storage chute 2. When it extends to a certain extent, the heat dissipation rod 8 rotates under the elastic force of the spring 11 and opens outward. The heat generated when the piston pin body 1 is in use is transferred to the outside through the threaded slider 4 and the heat dissipation rod 8; by using this device, controlling the rotation of the screw rod 5 indirectly drives the heat dissipation rod 8 to extend out of the storage chute 2. By increasing the contact area between this device and the outside through the heat dissipation rod 8, the heat dissipation of this device is effectively improved, avoiding the piston pin generating a high temperature during operation, resulting in an increase in the fitting clearance between the connecting rod and the piston, and not affecting the sealing performance of the engine.

[0043] Finally, it should be noted that: The above 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 modifications, equivalent replacements, improvements, 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 for heat dissipation, characterized in that: include: A piston pin body (1), wherein a receiving slide groove (2) is provided in the piston pin body (1); Two threaded sliders (4) are provided, and both of the two threaded sliders (4) are slidably connected in the receiving slide groove (2); A heat dissipation component is provided with a plurality of groups, wherein the plurality of heat dissipation components are respectively provided in two threaded sliders (4), each group of the heat dissipation components comprises a rotation groove (7), a heat dissipation rod (8), a first rotating shaft (9) and a second rotating shaft (10), wherein two second rotating shafts (10) and two springs (11) are provided, wherein the rotation groove (7) is provided on the circumferential surface of the threaded slider (4), and the two second rotating shafts (10) are respectively rotatably connected to the inner walls on both sides of the rotation groove (7), the first rotating shaft (9) is fixedly connected to the adjacent ends of the two second rotating shafts (10), the heat dissipation rod (8) is fixedly connected to the circumferential surface of the first rotating shaft (9), and the two springs (11) are respectively fixedly connected to the two side ends of the first rotating shaft (9), and the two springs (11) are respectively fixedly connected to the inner walls on both sides of the rotation groove (7).

2. A piston pin for heat dissipation according to claim 1, characterized in that: Two screw rods (5) are rotatably connected inside the piston pin body (1), the circumferential surfaces of the two screw rods (5) are provided with thread grooves, and the two threaded sliders (4) are respectively threadedly connected to the circumferential surfaces of the two screw rods (5).

3. A piston pin for heat dissipation according to claim 2, characterized in that: The circumferential inner wall of the receiving slide groove (2) is provided with a plurality of limiting slide grooves (3), and the circumferential surfaces of the two threaded sliders (4) are integrally formed with two protrusions, and the plurality of protrusions are respectively slidably connected in the plurality of limiting slide grooves (3).

4. A piston pin for heat dissipation according to claim 3, characterized in that: A connecting rod (12) is fixedly connected inside the two screw rods (5).

5. A piston pin for heat dissipation according to claim 4, characterized in that: The ends of the two screw rods (5) are both provided with hexagonal grooves (6).

6. A piston pin for heat dissipation according to claim 5, characterized in that: The plurality of heat dissipation rods (8) are all made of aluminum alloy material.

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