Mounting structure of reversible torsion spring and rotating gear

Abstract

The present invention relates to a torsion spring and a rotating gear, and more particularly to an installation structure of the torsion spring and the rotating gear. The torsion spring applicable to an EGR valve is configured to be capable of not only forward rotation but also reverse rotation. According to the first embodiment of the present invention, there is provided a reversible installation structure of a torsion spring and a rotating gear, which includes: a torsion spring; a rotating gear including a rotating shaft, and the rotating shaft is formed with a gear on its outer peripheral surface Teeth are extended downward from the center, and the torsion spring is installed on the outer peripheral surface of the rotating shaft; at least two or more guide rods are formed to protrude downward from the outer upper surface of the rotating gear to limit the torsion The movement of one end and the other end of the spring; and the fixed part, which is processed on the inner surface of the casing, and the casing covers the rotating gear to form the appearance of the EGR valve, the torsion spring includes a ring for fixing the main body, and the fixed part covers the The main body fixing ring prevents the main body fixing ring from rotating.

Description

technical field [0001] The present invention relates to a torsion spring and a rotating gear, in particular to an installation structure of the torsion spring and the rotating gear, which is configured so that the torsion spring applicable to an EGR valve can not only rotate forward but also reversely. Background technique [0002] In general, exhaust gas recirculation (EGR; EXHAUST GAS RECIRCULATION) refers to a technology that recirculates a part of exhaust gas from an engine to an intake system of the engine, thereby using the exhaust gas and external air for combustion. Since the exhaust gas is recirculated, there is an advantage in that NOx emitted from the vehicle into the atmosphere can be reduced. [0003] As an important technology among the above-mentioned EGR technologies, there is an EGR valve. [0004] The role of the EGR valve is to adjust the recirculation amount of the exhaust gas flowing from the exhaust pipe to the suction branch pipe side or mixed with ex...

AI Technical Summary

Problems solved by technology

However, in the case of the above-mentioned method, the process of connecting the two springs is added, so that not only there are difficulties in manufacture, but also there is no significant contribution to cost reduction due to the difficulty in manufacture due to the complicated structure.

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