| 摘要 |
<p>PURPOSE:To facilitate the work of assembly and at the same time, secure an electric connection by arranging so that mutual cylinders may be brought into contact pressingly with each other by means of a relative turning between mutual outer pipes, and making an electric connection by bringing pressingly into contact with each other, annular conductors provided at inner pipe end surfaces. CONSTITUTION:Each joint metal fitting 31, 32 is made up of an inner pipe 5 at whose one end portion opening end surface is provided an annular conductor 4 and at whose other end portion outer perimeter surface is furnished a built-in circuit type hose 2, and an outer pipe 6 which is put on the inner pipe 5 and has a combination portion. The inner pipe 5 has a recess groove 7 formed circumferentially at the opening end surface, and an annular seal member 8 is inside furnished within this recess groove 7. The annular conductor 4 is furnished on the outer perimeter side of the seal member 8, and in addition, a slide conductor 9 coming to contact with the annular conductor 4 is provided, and this slide conductor 9 is connected with a lead wire 9a which is provided through the flange portion 5a of the inner pipe 5.</p> |
