Clockwork movement comprising a guiding tube between a plate and a bridge
AssigneeETA SA Fabriques d'Ebauches
InventorMarc Huter
Life of this patent
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Abstract
The invention concerns a clockwork movement comprising a lower plate (1) situated on the side of the dial (19), a bridge (2), an upper plate (3) and a rotary shaft (10) which passes through a guiding tube (15) mounted in the bridge (2) and the lower plate (1). The tube (15) has two opposite shoulders (21, 26) which abut respectively against the bridge and the plate to maintain a determined gap between the latter. Three tubes of this type are preferably provided, corresponding to three shafts (10) which may be shafts of chronograph counter hands. At least one of the tubes (15) has an external bearing surface (22) which assures the positioning of a printed circuit board (24). The invention applies to any type of watch, in particular to chronograph watches.
Claims10
A clockwork movement comprising a lower plate, a bridge fixed to said plate, a fixed guiding tube having two ends mounted in respective orifices of said plate and of said bridge, and a rotary wheel shaft passing through an axial bore of said tube and guided by the latter,
- wherein said tube comprises two opposite external shoulders abutting respectively against said plate and said bridge to maintain a determined gap between said plate and said bridge.
A clockwork movement comprising a plate, a bridge fixed to said plate, a stationary guiding tube having an axial bore and two opposite external shoulders, and a rotary wheel shaft extending through said axial bore and being guided by said tube,
- wherein two opposite ends of said tube are engaged in respective orifices of said plate and said bridge such that opposite external shoulders abut against said plate and said bridge, said plate and said bridge being fixed to each other by screw means such that said tube is gripped between said plate and said bridge.
Dependencies are inferred from the claim text.