Engine piston pin

Abstract

The utility model provides an engine piston pin, which relates to the technical field of engine piston pins and comprises a piston pin body, a piston pin seat hole is arranged in the middle of the piston pin body, a heat conduction semi-ring plate is embedded and welded on the outer surface of the piston pin body, and a liquid storage cavity is arranged on the inner side of the heat conduction semi-ring plate. A liquid guide notch is formed in the outer ring face of the heat conduction semi-ring plate, an arc-shaped push plate is clamped and attached to the interior of a hole wall groove of the piston pin seat hole, the outer side end of the arc-shaped push plate is welded to the piston pin body through a stainless steel spring, and the inner side face of the arc-shaped push plate is filled with a solid lubricating block in an attached mode. The engine piston pin solves the problems that in the prior art, when an engine piston pin is used, heat is generated through friction, lubricating oil in a lubricating mechanism is prone to losing efficacy, and the lubricating and anti-attrition effects are affected.

Description

Technical Field

[0001] This utility model relates to the field of engine piston pin technology, specifically to an engine piston pin. Background Technology

[0002] An engine piston pin is a cylindrical pin mounted on the piston skirt. Its main function is to connect the piston and connecting rod, transmitting the gas force on the piston to the connecting rod, or causing the small end of the connecting rod to move with the piston. A search revealed an existing technology (publication number: CN202321205909.1) for an engine composite piston pin. The document states that "the composite piston pin for an engine described in this utility model, through the provision of a lubrication mechanism, allows the sliding compression block in the lubrication mechanism to compress the sponge block due to the inertia generated during piston pin use. This allows the lubricating oil inside the sponge block to enter the connection between the piston pin and the piston pin seat, providing lubrication and improving the service life of the piston pin while reducing the problem of the piston pin seat being stuck due to insufficient lubrication." However, in the existing technology, the frictional heat generated by the engine piston pin during use can easily lead to the failure of the lubricating oil in the lubrication mechanism, affecting the lubrication and friction reduction effects. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, an engine piston pin is provided to solve the problem that frictional heat generated during the use of the engine piston pin in the existing technology can easily lead to the failure of lubricating oil in the lubrication mechanism, thus affecting the lubrication and friction reduction effects.

[0004] To achieve the above objectives, an engine piston pin is provided, comprising: a piston pin body, wherein a piston pin seat hole is formed in the middle of the piston pin body.

[0005] A heat-conducting semi-ring plate is embedded and welded on the outer surface of the piston pin body. A liquid storage cavity is provided on the inner side of the heat-conducting semi-ring plate. A liquid guiding groove is opened on the outer ring surface of the heat-conducting semi-ring plate. An arc-shaped push plate is snapped and attached in the groove of the piston pin seat hole. The outer end of the arc-shaped push plate is welded to the piston pin body through a stainless steel spring. A solid lubricating block is filled and attached to the inner side of the arc-shaped push plate.

[0006] Furthermore, the piston pin body has symmetrical retaining ring grooves on its left and right sides on its outer surface; and the retaining ring grooves are distributed in a ring on the surface of the piston pin body.

[0007] Furthermore, the heat-conducting semi-ring plate is symmetrically welded around and attached to the middle of the outer surface of the piston pin body, and the arc-shaped push plate and solid lubricating block are distributed at the left and right sides of the heat-conducting semi-ring plate.

[0008] Furthermore, the heat-conducting semi-ring plate is connected to a liquid-blocking plug through the liquid-conducting groove, and a supporting rib is fixed inside the liquid storage cavity.

[0009] Furthermore, a rubber pad is bonded to the outer side of the arc-shaped push plate; and the rubber pad is in contact with the piston pin body.

[0010] Furthermore, three sets of stainless steel springs are welded to the outer end of the arc-shaped push plate.

[0011] Furthermore, the piston pin seat hole wall is provided with an arc-shaped groove; and an arc-shaped push plate and a solid lubricating block are embedded and fitted in the arc-shaped groove.

[0012] The beneficial effects of this utility model are as follows: the engine piston pin of this utility model utilizes an arc-shaped push plate, a stainless steel spring, and a solid lubricating block to form a lubrication structure for the piston pin seat hole. The solid lubricating block is embedded and fits into the groove of the hole wall of the solid lubricating block. The arc-shaped push plate, through the elastic push of the stainless steel spring, pushes the solid lubricating block to contact the engine connecting rod in the seat hole, which facilitates lubrication and reduces the wear degree between the piston pin hole and the engine connecting rod. At the same time, the solid lubricating oil is more temperature resistant and does not easily combine with dust, reducing the friction of dust particles in the engine piston pin hole and enhancing the friction reduction effect of the engine piston pin. The heat-conducting semi-ring plate is welded to the outer surface of the heat-conducting semi-ring plate, so that the coolant stored in the heat-conducting semi-ring plate reduces the frictional temperature rise of the engine piston pin, avoids the accumulation of heat in the engine piston pin, and extends the service life of the engine piston pin. Attached Figure Description

[0013] Figure 1 This is a front view cross-sectional structural diagram of the engine piston pin according to an embodiment of the present invention.

[0014] Figure 2 This is a side view cross-sectional structural diagram of the engine piston pin according to an embodiment of the present invention.

[0015] Figure 3 This is a side view cross-sectional structural diagram of the heat-conducting semi-ring plate according to an embodiment of the present utility model.

[0016] Figure 4 This is a front view cross-sectional structural diagram of the arc-shaped push plate and solid lubricating block according to an embodiment of the present invention.

[0017] In the figure: 1. Piston pin body; 11. Snap ring groove; 12. Piston pin seat hole; 2. Heat-conducting semi-ring plate; 21. Liquid-blocking plug; 22. Liquid storage chamber; 23. Support rib; 24. Liquid guide groove opening; 3. Arc-shaped push plate; 31. Stainless steel spring; 32. Rubber pad; 4. Solid lubricating block. Detailed Implementation

[0018] 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 protection scope of the present utility model.

[0019] Reference Figures 1 to 4 As shown, this utility model provides an engine piston pin, including: a piston pin body 1, with a piston pin seat hole 12 formed in the middle of the piston pin body 1.

[0020] A heat-conducting semi-ring plate 2 is inlaid and welded on the outer surface of the piston pin body 1. A liquid storage cavity 22 is provided on the inner side of the heat-conducting semi-ring plate 2. A liquid guiding groove 24 is opened on the outer ring surface of the heat-conducting semi-ring plate 2. An arc-shaped push plate 3 is snapped and attached in the groove of the piston pin seat hole 12. The outer end of the arc-shaped push plate 3 is welded to the piston pin body 1 through a stainless steel spring 31. A solid lubricating block 4 is filled and attached to the inner side of the arc-shaped push plate 3.

[0021] After the piston pin body 1 is connected to the engine connecting rod, the arc-shaped push plate 3 pushes the solid lubricating block 4 to contact the engine connecting rod in the seat hole through the stainless steel spring 31, lubricating the contact surface. This facilitates lubrication, reduces the wear between the piston pin hole and the engine connecting rod, and the solid lubricating oil is more heat-resistant and less likely to combine with dust, reducing the friction of dust particles in the engine piston pin hole and enhancing the friction reduction effect of the engine piston pin. The coolant stored in the heat-conducting semi-ring plate 2 helps to reduce the frictional temperature rise of the engine piston pin, avoids the accumulation of heat in the engine piston pin, and extends the service life of the engine piston pin.

[0022] In this embodiment, retaining ring grooves 11 are symmetrically provided on the left and right sides of the outer surface of the piston pin body 1; and the retaining ring grooves 11 are distributed in a ring on the surface of the piston pin body 1.

[0023] In a preferred embodiment, the piston pin body 1 is mounted to a retaining ring via a retaining ring groove 11 to restrict axial movement of the piston pin body 1. The piston pin seat hole 12 within the piston pin body 1 facilitates connection of the engine connecting rod, thereby connecting the engine piston to the connecting rod.

[0024] In this embodiment, the heat-conducting semi-ring plate 2 is symmetrically welded around and attached to the middle of the outer surface of the piston pin body 1. The arc-shaped push plate 3 and the solid lubricating block 4 are distributed at the left and right sides of the heat-conducting semi-ring plate 2. The heat-conducting semi-ring plate 2 is plugged with a liquid-blocking plug 21 through the liquid guiding groove 24, and a supporting rib plate 23 is fixed in the liquid storage cavity 22.

[0025] In a preferred embodiment, the heat-conducting semi-ring plate 2 stores coolant through the liquid storage chamber 22. When the heat of the piston pin body 1 is dissipated to the outer heat-conducting semi-ring plate 2, the coolant in the liquid storage chamber 22 absorbs the heat, preventing the piston pin body 1 from overheating and being damaged. The liquid guide groove 24 facilitates the pouring of coolant into the liquid storage chamber 22 of the heat-conducting semi-ring plate 2. The supporting rib 23 further reinforces the liquid storage chamber 22 of the heat-conducting semi-ring plate 2.

[0026] In this embodiment, a rubber pad 32 is bonded to the outer side of the arc-shaped push plate 3; and the rubber pad 32 is in contact with the piston pin body 1. Three sets of stainless steel springs 31 are welded to the outer end of the arc-shaped push plate 3. An arc-shaped groove is formed in the wall of the piston pin seat hole 12; and the arc-shaped push plate 3 and the solid lubricating block 4 are embedded and attached in the arc-shaped groove.

[0027] In a preferred embodiment, the arc-shaped pusher plate 3 is connected to the inner side of the piston pin body 1 by a stainless steel spring 31. The solid lubricating block 4 can be blocked in the arc-shaped groove of the piston pin seat hole 12 by means of a ring block, and then removed when the engine connecting rod is inserted and connected, so as to prevent the solid lubricating block 4 from falling out of the arc-shaped groove of the piston pin seat hole 12. The solid lubricating block 4 is more heat-resistant and does not easily combine with dust, reducing the friction of dust particles on the engine piston pin seat hole 12 and enhancing the wear reduction effect of the engine piston pin.

[0028] This invention effectively solves the problem in the prior art where frictional heat generated during engine piston pin use easily leads to lubrication failure in the lubrication mechanism, affecting lubrication and friction reduction. It facilitates lubrication, reduces wear between the piston pin hole and the engine connecting rod, and the solid lubricating oil is more temperature resistant and less prone to combining with dust, reducing the friction of dust particles on the engine piston pin hole, enhancing the friction reduction effect of the engine piston pin, preventing heat accumulation in the engine piston pin, and extending the service life of the engine piston pin. It is suitable for engine piston pins.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An engine piston pin, comprising: Piston pin body (1), wherein a piston pin seat hole (12) is provided in the middle of the piston pin body (1), characterized in that: The outer surface of the piston pin body (1) is inlaid with a heat-conducting semi-ring plate (2), and a liquid storage cavity (22) is provided on the inner side of the heat-conducting semi-ring plate (2). A liquid guide groove (24) is opened on the outer ring surface of the heat-conducting semi-ring plate (2). An arc-shaped push plate (3) is snapped and attached in the groove of the piston pin seat hole (12). The outer end of the arc-shaped push plate (3) is welded to the piston pin body (1) through a stainless steel spring (31). A solid lubricating block (4) is filled and attached to the inner side of the arc-shaped push plate (3).

2. The engine piston pin according to claim 1, characterized in that, The piston pin body (1) has symmetrical retaining ring grooves (11) on the left and right sides of its outer surface; and the retaining ring grooves (11) are distributed in a ring on the surface of the piston pin body (1).

3. An engine piston pin according to claim 1, characterized in that, The heat-conducting semi-ring plate (2) is symmetrically welded around the middle of the outer surface of the piston pin body (1), and the arc-shaped push plate (3) and the solid lubricating block (4) are distributed at the left and right sides of the heat-conducting semi-ring plate (2).

4. An engine piston pin according to claim 1, characterized in that, The heat-conducting semi-ring plate (2) is plugged with a liquid-blocking plug (21) through the liquid-conducting groove (24), and a supporting rib plate (23) is fixed in the liquid storage cavity (22).

5. An engine piston pin according to claim 1, characterized in that, The outer side of the arc-shaped push plate (3) is bonded with a rubber pad (32); and the rubber pad (32) is in contact with the piston pin body (1).

6. An engine piston pin according to claim 1, characterized in that, Three sets of stainless steel springs (31) are welded to the outer end of the arc-shaped push plate (3).

7. An engine piston pin according to claim 1, characterized in that, The piston pin seat hole (12) has an arc-shaped groove on its wall; and an arc-shaped push plate (3) and a solid lubricating block (4) are embedded and fitted in the arc-shaped groove.

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