| 摘要 |
<p>The invention relates to a stem (10) for a bicycle handlebar having controlled release of the steerability thereof, including a body (24) intended for receiving a stem arm (12) which in turn receives a handlebar, said stem also including a headset (40), a means (14) for attaching said stem (10) to the fork (16) of a bicycle including a head tube and a locking/unlocking means (18), characterised in that the locking/unlocking means (18) includes at least one key (56) placed in a cavity (54) arranged in the headset (40), a resilient means (58) for returning said at least one key towards the outside of said cavity, holes (36) arranged in the stem body (24) through which said keys pass, a ring (62) suitable for retracting the at least one key (56) through said holes (36) by a rotation or translation movement, respectively. The mounting also provides an aheadset arrangement.</p> |
