Bowden cable adjustment apparatus in particular for a cable-operated actuating system used in bicycles and cable-operated actuating system for bicycles incorporating such apparatus

摘要

In the present invention, there is disclosed a cable adjustment device, in particular a cable of a bicycle braking mechanism, comprising: a base member (30) having a cable (14, 22) guide portion (50, 98); an adjusting member (40) having a tubular portion, said adjusting member (40) being rotatably coupled to said cable (14, 22) guide portion (50, 98) for axial movement during relative rotational movement between said tubular portion of said adjusting member (40) and said cable guide portion (50, 98) of said base member (30); and an indexing spring (42) disposed between said base member (30) and said adjusting member (40) in a cantilevered arrangement, with a first part (91) of said spring (42) being engaged with one of said members (30, 40), and a second part (92) of said spring (42) having a free end movably coupled to said first part (91) to move in a first direction substantially transverse to said axial movement of said adjusting member (40), said second part (92) of said spring (42) being normally biased to engage a first longitudinally extending channel (80) formed in one of said members (30, 40) to restrict rotational movement between said members (30, 40). The above-described device makes it possible to make an actuation device of a bicycle braking mechanism in such a manner that an actuating element (32) having a cable attachment portion (68) adapted to couple a cable (14, 22) thereto is movably coupled to said base member (30).