| 摘要 |
The flexible cord guide head (1) has a flange with a very slightly conical surface (10) adjacent to a hollow generally cylindrical body with a male thread (6) and with several equispaced longitudinal slits (4). There are two pressure discs (2). A first cord is compressed between the two discs and a second cord is compressed between the lowermost cord and the flange on the head. The nut (3), which presses on the disc, has a female thread in a stepped though-bore (7).
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