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US 8,206,029 B2Granted
Micro-mechanical part with a shaped aperture for assembly on a shaft
AssigneeNivarox-FAR S.A.
InventorsFrédéric Vaucher, Raymond Gabus, Marco Verardo
Life of this patent
Estimating the term…
Abstract
The part is made from a plate (1) made of a brittle material, such as glass, quartz or silicon and includes at least one aperture (2, 4, 6) for driving in a shaft (5). This aperture is characterized in that it includes alternately rigidifying and positioning zones (8) and resilient deformation zones (10). Application to securing a shaft onto the moving parts of a timepiece movement.
Claims18
A micro-mechanical part, comprising:
- a plate made of a brittle material;
- and
- at least one aperture formed in the plate enabling insertion of a shaft thereinto, wherein the aperture is a shaped aperture including rigidifying and positioning zones and resilient deformation zones formed arranged for gripping the shaft when inserted, wherein each resilient deformation zone has a first recess on either side joining the aperture and a tongue whose end protrudes tangentially into the aperture, wherein the rigidifying and positioning zones and the tongues are arranged alternately around the shaft when inserted, wherein each tongue is separated from adjacent rigidifying zones by first recesses, and wherein the rigidifying and positioning zones are distributed in a substantially regular manner around the aperture.
A micro-machining part consisting of:
- a plate made of a brittle material;
- and
- at least one aperture formed in the plate for enabling a shaft to be driven thereinto, wherein the aperture is a shaped aperture including rigidifying and positioning zones and resilient deformation zones formed in the micro-machining part for gripping the shaft when inserted, wherein each resilient deformation zone is formed by a portion of the plate having a first recess on either side joining the aperture and having a tongue-shape an end of which protrudes tangentially into the aperture, wherein the rigidifying and positioning zones and the tongues are arranged alternately around the shaft when the shaft is inserted and the micro-machining part is gripping the shaft, wherein each tongue is separated from adjacent rigidifying zones by first recesses, and wherein the rigidifying and positioning zones are distributed in a substantially regular manner around the aperture.
A micro-machining part made from a first plate made of a brittle material, wherein the micro-machining part includes:
- at least one aperture formed therein for driving engagement with a shaft, wherein the aperture is a shaped aperture formed by rigidifying and positioning means and resilient deformation means formed in the micro-machining part for gripping the shaft, wherein each resilient deformation means is formed by a portion of the plate having a first recess on either side joining the aperture and having the shape of a tongue, the end of which protrudes tangentially into the aperture, wherein the rigidifying and positioning means and the tongues are arranged alternately around the shaft, wherein each tongue is separated from adjacent rigidifying and positioning means by first recesses, and wherein the rigidifying and positioning means are distributed in a substantially regular manner around the aperture.
Dependencies are inferred from the claim text.