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Zero-reset device with independent hammers

A technology of zero reset and control device, applied in the field of clocks and watches, can solve the problems of no spring, suboptimal connection, inability to use timing mechanism, etc., and achieve the effect of reliable implementation, simplicity and implementation

Active Publication Date: 2015-06-17
DE LA MFG DHORLOGERIE AUDEMARS PIGUET & CIE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a direct kinematic connection is not optimal
In addition, this means that the mechanism does not have springs which tend to force the ram against the heart; and the potential loss of precision must also be compensated by making the arm of the ram elastic
It should therefore be noted that the currently known prior art solutions are not entirely satisfactory and / or cannot be used by all types of chronograph mechanisms

Method used

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  • Zero-reset device with independent hammers
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  • Zero-reset device with independent hammers

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Embodiment Construction

[0014] The present invention will now be described in detail with reference to the accompanying drawings, which show embodiments of the invention by way of illustration.

[0015] The invention relates to a zero-reset device intended to be integrated in a timepiece, preferably a watch with a mechanical movement. For reasons of simplification of language, references below to "timepiece" and "watch" will be made synonymously, without thereby limiting the scope of corresponding interpretations which in any case apply to any type of timepiece having either a mechanical Energy source or electrical energy source. In addition, such a timepiece usually includes a chronograph mechanism or a flyback hand mechanism intended to be equipped with a zero reset device according to the invention. To the extent that chronograph and flyback pointer mechanisms and also other similar mechanisms suitable for combining with the device according to the invention are known to those skilled in the art,...

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PUM

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Abstract

A zero-rest device for a timepiece, including first and second control mechanisms, two zero-reset cams, and two corresponding zero-reset hammers configured to cooperate with the cams. The device also includes two hammer springs exerting a pre-stress force causing a hammer to pivot in the direction of its corresponding cam, a winding and release mechanism and a locking mechanism. The winding and release mechanism is configured to wind the hammer springs during a first phase of an actuation of the first control mechanism and to cooperate, during a second phase of this actuation, with the locking means, such that the locking means passes from a rest position in which the locking means holds the hammers to a release position in which the locking means releases the hammers, which come, in each case under the action of the corresponding hammer spring, into the positions thereof of cooperation with the corresponding cam.

Description

technical field [0001] The present invention relates to a zero return device for a timepiece, in particular for a chronometer, comprising a first control device, a second control device, at least two zero return cams, and at least two corresponding zero return bumpers hammer, the second control means being kinematically connected to said first control means, said at least two respective zero return hammers pivoting independently of each other and actuatable so as to cooperate with respective zero return cams. [0002] The invention relates more particularly to timepieces, in particular chronographs, having a mechanical movement and incorporating a chronograph mechanism or flyback hands. In this context, it is conventional that each of the seconds, minutes and hours hands, possibly arranged as retrace hands, are mounted on an axel fitted with a heart-shaped cam that cooperates with a corresponding hammer so that Returns the pointer to its rest position in the case of a zero re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04F7/08
CPCG04F7/0819G04F7/0809G04F7/062G04F7/0814
Inventor T·菲利皮内J·加巴图勒J·蒙泰
Owner DE LA MFG DHORLOGERIE AUDEMARS PIGUET & CIE
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