| 摘要 |
An improved hose clamp of the kind comprising a steel strip (1) bent to annular shape with the end portions (1', 1'') overlapping. The radially outer one (1'') of the end portions is formed with a threaded passageway (5) having transverse grooves in which engage the threads (4) of a screw worm (3) which is rotatably journalled in a sleeve (2) but axially non-slidable therein. The sleeve encloses the screw worm and comprises a space allowing the outer strip end portion (1'') to be displaced through the sleeve (2) between the inner strip end portion (1') and the screw worm (3) by rotating the latter. The part of the inner strip end portion (1') which is positioned closest to the longitudinal axis of the screw worm is provided with a punched portion (12) and with an upset portion provided at the side of the punched portion positioned closest to the free end of the inner strip end portion (1'). The upset portion (11) is positioned in a notch (10) formed in the radially inner one of the screw worm sleeve walls so that an edge face (10') formed by the notch in the screw worm sleeve (2) forms an abutment face against the edge face (11') of the upset portion (11). |
