| 摘要 |
A windscreen wiper (10) includes an elongate beam (12) and a blade having a backing strip (16) which is attached to the beam (12), the backing strip (16) having a substantially planar upper surface (17) and a wiping portion (20) which has at least one wiping edge (22) which, in use, contacts a work surface to be wiped (24). The blade (14) further includes a plurality of hinges each defined by a suitably flexible web (28, 32) with a first hinge web (28) being adjacent the backing strip (16) and a second hinge web (32) being adjacent the wiping portion (20), with each hinge web (28, 32) having an axis (30, 34) and with each hinge web (28, 32) being able to flex between nominal limit positions on either side of its axis, whereby the wiping portion (20) is displaceable between nominal limit positions on either side of the backing strip (16), such that, at substantially any point along the length of the blade (14), if the blade is displaced to pivot the wiping portion (20) to one side, to its nominal limit position, the acute angle between a line between the edge (22), or the edge which would contact the work surface (24) with the blade (14) so displaced, and the axis of the first hinge web (28) and a line which extends substantially perpendicularly to the upper surface of the backing strip (16) is less than 33 DEG . |
