| 摘要 |
A flow meter is provided to simplify the structure of a passage which is formed at a cover and to reduce a defect rate by blocking axial movement of a male thread with a snap ring. A flow meter comprises a housing(100), a catching recess, a snap ring(400), and a cover(200). Female and male threads(300a,300b), which are arranged in the housing, are supported by a bearing(b). The cover is combined with two ends of the housing. The catching recess is recessed on the internal surface of a through hole in which the male thread is inserted. The snap ring, which is contacted with the bearing, is installed at the catching recess to prevent axial movement of the male thread. The cover has a circular passage(210) to minimize flow resistance of liquid and is combined with two ends of the housing. The passage includes a thread part(210a) formed from the outer end of the cover, and an expansion part(210b) having a larger diameter than the thread part. |
