Castor for carts.

摘要

The invention relates to a pivoting caster (1) comprising a wheel (2) whose pivoting motion about a vertical axis (3) is susceptible of being locked or unlocked by the rotation of the wheel (2) in one direction or the other. A double angle lever (17, 17a, 17b) is housed in the space delimited between the support bearing (8) and the tread (2a) of the wheel (2) at the sides (5) of the shell (6). The lower lever arm (17b) has a friction member (19) constantly elastically against the tread (2a). The upper lever arm (17a) has a locking plate (22) susceptible to be received in a locking notch (23) provided in an integral element (9, 10) of the pivoting shaft (22). The annular cap (7) of the support shell (6) has a guiding recess (26) for the upper lever arm (17a).