| 摘要 |
<p>The invention relates to a horological wheel unit (1), comprising a first guide surface (2) arranged to engage with a second guide surface (3) connected to a bridge (50), in order to mount said wheel unit (1) in a pivoting manner about an axis (D) with respect to said bridge (50). Said first guide surface (2) is single and located in a mid-plane (P), orthogonal to said axis (D), of said wheel unit (1), in order to keep said wheel unit (1) in a fitted or cantilevered manner with respect to said bridge (50), and said wheel unit (1) has no guide pin on either side of said guide surface (2). Said wheel unit (1) forms a ball bearing (10), of which said first guide surface (2) forms an internal raceway (9) for balls (11), and of which an external cage (12) mounted on said bridge (50) has said second guide surface (3), which forms an external raceway for said balls (11).</p> |
