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Detent escapement for timepiece

A technology for escapement and clock movement, applied in escapement, clock, mechanically driven clock, etc., can solve problems such as damage to the correct operation of the escapement

Active Publication Date: 2021-11-05
MONTRES BREGUET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the barrel spring is slightly wound, the constant spring force provided by these detent springs impairs the correct operation of the escapement

Method used

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  • Detent escapement for timepiece
  • Detent escapement for timepiece
  • Detent escapement for timepiece

Examples

Experimental program
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Effect test

Embodiment Construction

[0060] The present invention derives from the following general inventive idea: to provide a detent escapement in which the escape wheel is released to provide a driving impulse to the balance wheel during the first half-cycle of an oscillation and in which there In this case, the return of the balance wheel to its initial position during the second half-period of the same oscillation (also called "coup perdu") is performed without the aid of a spring carried by the detent device and without a return spring. Thanks to the invention, it is thus possible to dispense with the springs normally used in detent escapements, which are known to be fragile, brittle and subject to wear. Furthermore, since the escape wheel meshes directly with the balance, there is a constant matching relationship between the mechanical energy provided by the barrel spring and the energy provided by the balance. If the barrel spring is highly wound, the escape wheel will provide a high mechanical impact t...

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Abstract

The invention relates to a detent escapement for adjusting the operation of a clock movement. The detent escapement includes an escape wheel with teeth regularly spaced along a perimeter and a balance having an impulse pallet and receiving driving impulses via the teeth of the escape wheel by means of the impulse pallet, the balance wheel moves through oscillating motion,during which the balance performs receiving a half cycle with a driving impulse and ahalf cycle without a driving impulse, the detent escapement also including a hook pivotally mounted on the balance and held bearing by an elastic member against an abutment, the detent escapement including a pivotable detent which includes a first arm which collaborates with the escape wheel to block the latter before the start of the driving impulse, as well as a second arm which collaborates the balance to allow the escape wheel to disengage from its engagement with the first arm at the start of the driving impulse, and which limits the pivoting of this detent to only part of the oscillation of the balance, the detent being configured to again block the escape wheel after the latter has finished providing the driving impulse to the impulse pallet of the balance.

Description

technical field [0001] The object of the invention is a detent escapement for a timepiece, in particular for a wristwatch. Background technique [0002] An escapement is a mechanism that is placed between the escape wheel and the regulator / governor of most chronograph instruments. The driving force generated by the barrel spring is transmitted to the escape wheel, which in turn transmits this driving force to the escapement, whose function is to maintain the oscillation of the regulating member called the balance wheel. [0003] The astronomical clock escapement emerged in the 18th century, when coastal nations launched a race to manufacture the most accurate timekeeping instruments possible, allowing the most reliable determination of geographical location at sea. This is why, even today, chronometer escapements are found mainly in marine chronometers. [0004] An expensive and elaborate detent escapement is the one known as a "coup perdu escapement". In other words, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B15/00G04B15/14
CPCG04B15/00G04B15/14G04B15/06
Inventor A·佐格J·梅斯B·雷格瑞特
Owner MONTRES BREGUET
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