A main piston forging with good sealing

Abstract

The utility model discloses a main piston forge piece that good sealing, including metal piston, the outside of metal piston is equipped with the piston pin seat, the lower part of metal piston is the skirt, the top of metal piston is piston top, the inside of metal piston is equipped with the limit groove and sealing groove, the inside of limit groove is equipped with the limit piece, the inside of sealing groove is equipped with the sealing ring. This main piston forge piece that good sealing, limit piece is close to the side of sealing ring and is pasted with sealing ring, and the upper and lower two parts of sealing piece are connected in the outside of metal piston, and the limit piece that sets up is positioned to sealing ring, can control its shape, prevents its appearance wobble in the long -term use process to improve the overall sealing, and limit piece and sealing ring all adopt nodular cast iron material, and nodular cast iron material has stronger strength, toughness and wear resistance, and the service life is long, and the sealing effect is good.

Description

Technical Field

[0001] This utility model relates to the field of automotive piston technology, specifically to a main piston forging with good sealing performance. Background Technology

[0002] A piston is a reciprocating component in the cylinder block of a car engine. The basic structure of a piston can be divided into the top, head, and skirt. The piston top is the main part that makes up the combustion chamber, and its shape depends on the type of combustion chamber used. Gasoline engines mostly use flat-top pistons, which have the advantage of a small heat absorption area. Diesel engine piston tops often have various recesses, the specific shape, position, and size of which must be adapted to the requirements of mixture formation and combustion in the diesel engine.

[0003] Automotive pistons are made of metal, which has strong wear resistance and high temperature resistance. However, they only have 2-3 sealing rings on their surface. After long-term use, the sealing rings are prone to shaking when moving up and down, resulting in reduced sealing performance. Utility Model Content

[0004] The purpose of this invention is to provide a main piston forging with good sealing performance to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a main piston forging with good sealing performance, comprising a metal piston, a piston pin seat on the outer side of the metal piston, a skirt at the bottom of the metal piston, a piston top at the top of the metal piston, a limiting groove and a sealing groove in the middle of the metal piston, a limiting component sleeved inside the limiting groove, and a sealing ring sleeved inside the sealing groove.

[0006] Furthermore, there are five equal-spaced, staggered limiting grooves and sealing grooves, three of which are limiting grooves.

[0007] Furthermore, the limiting member is fitted to the sealing ring on the side near the sealing ring, and the upper and lower parts of the sealing member are sleeved on the outside of the metal piston.

[0008] Furthermore, both the limiting component and the sealing ring are made of ductile iron.

[0009] Compared with the prior art, the beneficial effects of this utility model are: This well-sealed main piston forging features a limiting component that fits snugly against the sealing ring on the side closest to it. The upper and lower parts of the sealing component are fitted onto the outside of the metal piston. By limiting the sealing ring with the limiting component, its shape can be controlled, preventing it from shaking during long-term use and thus improving the overall sealing performance. Both the limiting component and the sealing ring are made of ductile iron, which has high strength, toughness, and wear resistance, resulting in a long service life and good sealing effect. Attached Figure Description

[0010] Figure 1 is a schematic diagram of the structure of this utility model; Figure 2 is a schematic diagram of the metal piston structure of this utility model; Figure 3 is a three-dimensional structural diagram of the limiting component of this utility model; Figure 4 is a schematic cross-sectional view of the limiting component of this utility model.

[0011] In the diagram: 1. Metal piston; 2. Limiting component; 3. Sealing ring; 101. Piston pin seat; 102. Skirt; 103. Piston top; 104. Limiting groove; 105. Sealing groove. Detailed Implementation

[0012] 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.

[0013] Please refer to Figures 1-4. This utility model provides a technical solution: a main piston forging with good sealing performance, including a metal piston 1, a limiting member 2, a sealing ring 3, a piston pin seat 101, a skirt 102, a piston top 103, a limiting groove 104, and a sealing groove 105. The piston pin seat 101 is provided on the outer side of the metal piston 1, the lower part of the metal piston 1 is the skirt 102, the top part of the metal piston 1 is the piston top 103, and the limiting groove 104 and the sealing groove 105 are provided in the middle of the metal piston 1. The limiting member 2 is sleeved inside the limiting groove 104, and the sealing ring 3 is sleeved inside the sealing groove 105.

[0014] Furthermore, there are five equal-spaced, staggered limit grooves 104 and sealing grooves 105, of which three are limit grooves 104.

[0015] Through the above technical solution, the limiting member 2 is sleeved and installed through the set limiting groove 104, and the sealing ring 3 is sleeved and installed through the set sealing groove 105.

[0016] Furthermore, the side of the limiting member 2 closest to the sealing ring 3 is fitted with the sealing ring 3, and the upper and lower parts of the sealing member 2 are sleeved on the outside of the metal piston 1.

[0017] By using the above technical solution, the sealing ring 3 is limited by the setting limit member 2, and its shape can be controlled to prevent it from shaking during long-term use, thereby improving the overall sealing performance.

[0018] Furthermore, both the limiting component 2 and the sealing ring 3 are made of ductile iron.

[0019] Through the above technical solutions, ductile iron material has strong strength, toughness and wear resistance, long service life and good sealing effect. Working principle: The limiting component 2 and the sealing ring 3 are inserted into the corresponding limiting groove 104 and sealing groove 105 from bottom to top. During use, the sealing ring 3 is limited by the limiting component 2, which can control its shape and prevent it from shaking during long-term use, thereby improving the overall sealing performance. Both the limiting component 2 and the sealing ring 3 are made of ductile iron, which has strong strength, toughness and wear resistance, long service life and good sealing effect.

[0020] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A main piston forging with good sealing performance, comprising a metal piston (1), characterized in that: The metal piston (1) has a piston pin seat (101) on its outer side, a skirt (102) at the bottom, a piston top (103) at the top, a limiting groove (104) and a sealing groove (105) in the middle, a limiting member (2) is fitted inside the limiting groove (104), and a sealing ring (3) is fitted inside the sealing groove (105).

2. The main piston forging with good sealing performance according to claim 1, characterized in that: The limiting groove (104) and sealing groove (105) are arranged in a staggered manner with equal spacing, and three of them are the limiting groove (104).

3. The main piston forging with good sealing performance according to claim 1, characterized in that: The limiting member (2) is attached to the sealing ring (3) on the side near the sealing ring (3), and the upper and lower parts of the limiting member (2) are sleeved on the outside of the metal piston (1).

4. A main piston forging with good sealing performance according to claim 1, characterized in that: Both the limiting component (2) and the sealing ring (3) are made of ductile iron.

Images