Patent ID: 9133947
Filing Date: 2015-09-15
Classification: F16K,Y10T

Abstract:
1. An excess flow shut off device comprising: a support member including a cylindrical part which has an outwardly fine protrusion formed at an end portion thereof, a connection part protrudingly formed on the cylindrical part; a support part formed at a crisscross portion of an end of the connection part; and a shaft hole formed in the support part; an opening and closing member including a shaft part inserted into the shaft hole, a hemispherical convex opening and closing part formed at one side of the shaft part and having a diameter larger than the support part, a hemispherical concave part formed in the hemispherical convex opening and closing part, and a joining part formed at the other side of the shaft part; a spring forcedly fit to the shaft part; a joining member inserted and mounted into the joining part and fixed by adhesives in a state where the spring is fit onto the shaft part; a cylindrical member including a packing groove formed on an outer face thereof, a joining hole to which the cylindrical part is inserted in the state where the cylindrical part is coated with the adhesives, and a blocking hole formed at an end of the joining hole; a first packing member of a ring shape forcedly fit onto the packing groove; a metallic connection member including a stepped jaw formed on an inner face thereof, an insertion hole to which the cylindrical member is forcedly inserted, and a spiral part formed at one side of an outer face thereof; a cap member including a first spiral groove screw-coupled with the spiral part, a second spiral groove connected to a hose, and a partition wall for partitioning the second spiral groove from the first spiral groove; and a second packing member of a ring shape forcedly fit onto the first spiral groove.