Abstract:
The oscillating mass able to be fixed to a frame (1) pivoted on the exterior of a timepiece movement has toothing kinematically connected to the ratchet of a barrel of the timepiece movement. This oscillating mass has, on the one hand, a mount (4) which is annular or is in the form of an annular sector and is able to be fixed to the frame (1) and, on the other hand, a central part (7) located mainly or exclusively in one half of the surface delimited by the mount (4).
Abstract:
The oscillating weight includes a drive ring and a heavy sector. The drive ring includes an annular transmission portion which has a coaxial toothing and a second annular portion concentric to the annular transmission portion, the heavy sector being fixed to the second annular portion. The drive ring further includes a plurality of connecting elements which are elastically deformable and which connect the annular transmission portion to the second annular portion.
Abstract:
The oscillating weight includes a drive ring and a heavy sector. The drive ring includes an annular transmission portion which has a coaxial toothing and a second annular portion concentric to the annular transmission portion, the heavy sector being fixed to the second annular portion. The drive ring further includes a plurality of connecting elements which are elastically deformable and which connect the annular transmission portion to the second annular portion.
Abstract:
The oscillating mass able to be fixed to a frame (1) pivoted on the exterior of a timepiece movement has toothing kinematically connected to the ratchet of a barrel of the timepiece movement. This oscillating mass has, on the one hand, a mount (4) which is annular or is in the form of an annular sector and is able to be fixed to the frame (1) and, on the other hand, a central part (7) located mainly or exclusively in one half of the surface delimited by the mount (4).
Abstract:
To provide a ball bearing device with less possibility that its stable operation is disturbed, an oscillating weight structure for automatic winding and an automatic winding timepiece equipped with the ball bearing device. A ball bearing device 1 suitable for use in an oscillating weight structure for automatic winding timepiece includes an outer ring, an inner ring, a plurality of balls disposed between the outer ring and the inner ring regulated in the radial direction, a retainer provided with a plurality of recessed sections in the circumferential direction at intervals each having an opening in the outer periphery for holding respective one of the balls in the circumferential direction at intervals, and rotatably fitted to the inner ring. Each of the recessed sections of the retainer is formed deeper and wider than the ball in a bottom wall section of the recessed section so that a gap remains between a bottom wall surface of the recessed section and a surface of the ball radially regulated between the outer ring and the inner ring, and can be abut on the ball with the surface opposing to the ball in the circumferential direction in surface sections adjacent to the opening.