Oil duct damping and noise reducing structure provided with built-in filter

Abstract

The invention discloses an oil duct damping and noise reducing structure provided with a built-in filter. The oil duct damping and noise reducing structure comprises an oil duct, a filter and a screw thread plug, wherein the filter is arranged in the oil duct, the front end of the filter is limited by virtue of a step surface in the oil duct, the screw thread plug is arranged at the end of the oil duct, a guide rod and a cylindrical helical spring are arranged between the filter and the screw thread plug, the guide rod comprises a guide rod part and an end part, a guide hole is formed in the tail end of the filter, the guide rod is inserted into the guide hole, the end part is matched with the inner diameter of the oil duct, the rear end face of the end part props against the front end face of the screw thread plug, the front end of the cylindrical helical spring props against the rear end face of the filter, and the rear end of the cylindrical helical spring props against the front end face of the end part. By utilizing compressing of the cylindrical helical spring and guiding of the guide rod, radial displacement and axial movement of the filter are effectively prevented, the problems that the filter is loosened after operating for a long time and vibration noise is produced are solved, the cleaning and maintenance of the oil duct are more convenient, and the machining dimensional accuracy requirement on parts is reduced.

Description

technical field [0001] The invention relates to the technical field of automobile engines, in particular to an oil channel shock-absorbing and noise-reducing structure with a built-in filter. Background technique [0002] A filter is installed in the engine oil passage, and a threaded plug or a press-fitted steel ball is installed after the filter is installed. The threaded plug or steel ball presses the filter in the oil passage tightly. The main problems are: (1) Press-fitting steel balls is not convenient for cleaning and maintenance of the oil passage. When cleaning and maintaining the oil passage, it will cause damage to the existing structure; (2) Installing threaded plugs or press-fitting steel balls will take a long time After operation, the filter loosens in the oil passage and generates vibration noise. Through analysis, it is found that the cause of the vibration noise is caused by the axial movement and radial movement of the filter; (3) In order to ensure the r...

AI Technical Summary

Problems solved by technology

[0003] The invention aims to solve the problem that the filter becomes loose in the oil passage and generates vibration noise after long-term operation

Images