SCREW LOOSENING PREVENTION STRUCTURE AND GAS PRESSURE DEVICEHAVING THEREOF

摘要

A screw loosening prevention structure and a gas-pressure device are provided. The structure includes a first member that is formed with a container space filled with gas, and includes a first threaded portion, a second membe r that includes a second threaded portion, wherein the second member is threadedly coupled with the first member by threadedly engaging the second threaded portion with the first threaded portion, and receives a pressure from the gas in the container space of the first member, and a spring member provided between th e first and second members in a deformed state in which the displacement of th e spring member is greater than a relative displacement of the first and secon d members due to a loosening factor including the gas pressure that is receive d by this second member.