Regulator system for mechanical watch

A technology for regulating systems and machinery, applied in the direction of electromechanical clocks, clocks, instruments, etc., can solve the problems of changing tangential force, oversized installation parts, and impact resistance

Active Publication Date: 2016-01-20
THE SWATCH GRP RES & DEVELONMENT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, the device according to European Patent Application No. EP2466401A1 has a number of disadvantages resulting from the fact that the tuning fork interacts with the escape wheel to generate a tangential force that varies greatly when the escape wheel is advanced by one tooth
However, in the case of a wrist watch in particular, and given the high accelerations it has to withstand, this solution is not possible: eith

Method used

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  • Regulator system for mechanical watch
  • Regulator system for mechanical watch
  • Regulator system for mechanical watch

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Embodiment Construction

[0028] Referring to the accompanying drawings, the present invention will be described in detail. figure 1 The prior art according to European Patent Application No. EP2466401A1 is shown. A U-shaped tuning fork resonator 1 has permanent magnets 2 at the ends of each arm, oriented such that the magnetic fields generated by the magnets are in the same direction. The escape wheel 3 is arranged between the arms of the tuning fork and has in the example shown six permanent magnets 4 oriented alternately so as to present opposite or identical poles to the tuning fork magnets. The escape wheel also has a pinion 5 that meshes in the gear train of the timepiece.

[0029] Figure 1a Shows the tangential force that develops when the escape wheel rotates slowly and the resonator is stationary. This is the starting condition of the watch movement. because figure 1 The geometry in is symmetric about a plane passing from the axis of the wheel and through the tuning fork magnets, so ther...

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Abstract

The present invention relates to regulator organs for a mechanical timepiece, specifically a system based on the magnetic interaction between a resonator, for example in the form of a tuning fork, and an escapement wheel. The system is characterised in that there are several magnetic interaction zones (25) and (26) between the resonator (14) and the escapement wheel (9) that are arranged such that the torques produced at the escapement wheel by those interactions compensate each other if the escapement wheel is not synchronised with the frequency of the resonator. This results in a negligible torque on the escapement wheel when the latter rotates slowly in the direction of the arrow (24) or in the opposite direction. This makes it possible to start the timepiece at a low torque of the barrel spring and without a launch procedure or device and allows better resistance of the timepiece to withstand a loss of synchronisation in case of impact.

Description

technical field [0001] The invention relates to a regulating system for a mechanical timepiece. "Adjustment system" or "adjustment part" refers to two distinct devices: the resonator and the escapement. Background technique [0002] A resonator is a component that produces the periodic motion that forms the time base of a timepiece. Well known resonators are the pendulum oscillating under the action of gravity, the balance wheel which, together with the associated balance spring, forms a mechanical oscillator resonating around the balance axis, and the tuning fork, which oscillates by elastic deformation of their structure. The best known embodiment of a tuning fork is a tuning fork used in music, however, the most widely manufactured tuning fork is a resonator made from a quartz crystal and used as a time base for electronic watches. [0003] The escapement is the connecting element between the watch's gear train and the resonator. The escapement has two functions: first...

Claims

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Application Information

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IPC IPC(8): G04C5/00
CPCG04C5/005G04C3/104G04C3/105G04C5/00G04C3/08G04C3/101
Inventor J-P·米格诺J-J·博恩R·丁格
Owner THE SWATCH GRP RES & DEVELONMENT LTD
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