Low-noise valve rocker assembly of motorcycle engine

Abstract

The invention discloses a low-noise valve rocker assembly of a motorcycle engine. The low-noise valve rocker assembly comprises a rocker which is assembled on a rockshaft of a cylinder head and a torsion spring which applies preload to the rocker, wherein the rocker includes a left side surface and a right side surface and the torsion spring includes a spiral section. A spring hook at one end of the torsion spring which is a rocking end is connected with the rocker in a lap joint mode, and a spring hook at the other end of the torsion spring which is a fixed end is connected with the cylinder head in a lap joint mode. The spiral section of the torsion spring is positioned on the left side surface or the right side surface of the rocker, and the rocking end of the torsion spring crosses the left side surface or the right side surface of the rocker to be connected with the rocker in a lap joint mode. The rocking end and the spiral section of the torsion spring are respectively positioned on the left side surface and the right side surface of the rocker, so that axial component force which is generated by the moving torsion spring to enable the rocker to move axially is avoided, abnormal sound produced due to the fact that the axially-moving rocker knocks the cylinder head is eliminated, loosening and position changing of the torsion spring and the rocker due to rocker forging die difference, torsion spring manufacturing error and the like cannot occur, and the firmly connection of the torsion spring and the rocker enables the rocker to run more steadily and quietly.

Description

technical field [0001] The invention relates to a valve rocker arm assembly, in particular to a low-noise valve rocker arm assembly of a motorcycle engine. Background technique [0002] Such as Figure 1~Figure 2 As shown, when the motorcycle engine is working, the working temperature of the cylinder head is extremely high. In order to ensure that the engine can work normally under various working conditions, it is necessary to compensate the thermal expansion of the tappet 1A, that is, reserve 0.06~ The valve clearance of 0.12mm, but because of the existence of the valve clearance, when the engine is working, the top of the tappet 1A will bounce because of its fast moving speed during the up and down reciprocating movement of the engine, so that the top of the tappet 1A is in contact with the top of the tappet 1A. The adjustment nut 3A on the upper part of the valve of the rocker arm 2A will produce impact noise at the moment of contact. For this reason, in the prior art, a...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a low-noise valve rocker arm assembly for motorcycle engines, which can effectively reduce or even eliminate the axial displacement of the rocker arm, and avoid the noise phenomenon caused by the axial displacement of the rocker arm. Features

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