Automobile piston

Abstract

The invention discloses an automobile piston, and belongs to the field of pistons. The piston comprises a piston body, a piston pin seat, a piston pin and an auxiliary pin; the piston pin seat is arranged in the middle of the piston body and has two through ends; the piston pin is inserted into the piston pin seat, internal threads are arranged on the inner surface of the piston pin, more than onepositioning hole is formed in the lower surface of the piston pin, positioning grooves corresponding to the positioning holes are formed in the piston body, and the positioning grooves are communicated with the inner part of the piston pin seat. According to the piston, the auxiliary pin and a moving mechanism are arranged in the piston pin, rotation of the auxiliary pin in the piston pin is converted into vertical movement of positioning insertion blocks through the moving mechanism, and the locking state of the piston pin and the piston pin seat is switched through the positions of the positioning insertion blocks in channels formed by the positioning holes and the positioning grooves; when the bottoms of the positioning insertion blocks move upwards into the positioning holes, fixationbetween the piston pin and the piston pin seat is relieved; and when the bottoms of the positioning insertion blocks move downwards into the positioning grooves, the piston pin and the piston pin seat are positioned and fixed.

Description

technical field [0001] The invention relates to the field of pistons, more specifically, to an automobile piston. Background technique [0002] The piston is a reciprocating part in the cylinder block of an automobile engine. The basic structure of the piston can be divided into a top, a head and a skirt. The top of the piston is the main part of the combustion chamber, and its shape is related to the selected form of the combustion chamber. Gasoline engines mostly use flat-top pistons, which have the advantage of small heat-absorbing areas. There are often various pits on the top of the piston of a diesel engine, and its specific shape, position and size must be adapted to the requirements of the mixture formation and combustion of the diesel engine. [0003] Patent No. CN104088716A discloses the invention "A Piston for Automobile". In this patent, the spring 8 that provides tension is installed on the cylinder body. The spring 8 is in a fixed and compressed state for a l...

AI Technical Summary

Problems solved by technology

[0003] Patent No. CN104088716A discloses the invention "A Piston for Automobile". In this patent, the spring 8 that provides tension is installed on the cylinder body. The spring 8 is in a fixed and compressed state for a long time, which is easy to cause fatigue, damage, and affect life. Moreover, during the installation process The positioning rod 10 snaps into the positioning hole 9, and the position is difficult to find, which will cause troublesome operation during installation and matching

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