The invention relates to a bottom bracket (1) for bicycles comprising a shaft (2) having a longitudinal axis (X), a first adapter (50) radially outside of, and crossed by, the shaft (2) and intended to be associated with a first end (11) of a housing box (10) of the bottom bracket, a second adapter (60) radially outside of, and crossed by, the shaft (2) and intended to be associated with a second end (12) of a housing box (10) of the bottom bracket, a first rolling bearing (30) radially interposed between the shaft (2) and the first adapter (50) and a second rolling bearing (40) radially interposed between the shaft (2) and the second adapter (60), first axial locking members (70), arranged in a position axially outside the first (30) and the second rolling bearing (40), respectively, and in axial abutment on a first slewing bearing (31) of the first rolling bearing (30) and on a first slewing bearing (41) of the second rolling bearing (40), a first protective screen (100) that extends, in the radial direction, between a radially outer surface (53a) of the first adapter (50) and a radially outer surface (72) of the first axial locking members (70) and that extends, in the axial direction, at least partially outside of the first adapter (50), the first protective screen (100) being fixedly connected to the first adapter (50) and comprising a sealing member (101) arranged in sliding contact on the radially outer surface (72) of the first axial locking members (70).
BICYCLE BOTTOM BRACKET
FAHRRADTRETLAGER
PÉDALIER DE BICYCLETTE
2017-11-08
Patent
Electronic Resource
English