| 摘要 |
The fastener (1), e.g. for a cord (3), lace or strap having at least one elastic portion (2), has a groove (4) with side walls (5, 6) spaced far enough apart to allow the cord to pass freely between them when stretched while being shaped or surfaced to grip it when relaxed. The grip can be provided by an undulating, non-slip or roughened surface on the side walls of the groove. |
