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Flexible guide and set of stacked flexible guides for rotary resonator mechanism

A technology of rotating resonators and guides, applied in escapement mechanisms, mechanically driven clocks, mechanisms for stabilizing frequencies, etc., can solve problems such as inability to achieve isochronism

Active Publication Date: 2021-04-27
ETA SA MFG HORLOGERE SUISSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014]However, the flexibly guided rotating resonators described in the prior art do not satisfy this requirement, making them unable to achieve sufficient isochronism for efficient

Method used

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  • Flexible guide and set of stacked flexible guides for rotary resonator mechanism
  • Flexible guide and set of stacked flexible guides for rotary resonator mechanism
  • Flexible guide and set of stacked flexible guides for rotary resonator mechanism

Examples

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Embodiment Construction

[0042] figure 1 A flexible guide 1 is shown comprising a support 2 , an element 3 movable relative to the support 2 , and two non-crossing flexible strips 4 , 5 connecting the movable element 3 to the support 2 . The movable element 3 has the shape of a circular arc, the strips 4, 5 being arranged on the inner side of the circular arc. The strips 4 , 5 have the same length and are arranged symmetrically to connect the support 2 . In the absence of prestress, the strips 4 , 5 are oriented in two directions, which intersect each other at a point 6 of the support 2 , which defines the center of rotation of the movable element 3 . By bending the flexible strips 4 , 5 the movable element 3 can be displaced relative to the support 2 . The flexible guide 1 is arranged roughly in one plane.

[0043] According to the invention, the flexible guide 1 comprises prestressing means 7 configured to apply a force for buckling the flexible strips 4 , 5 by bringing the movable element 3 clos...

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PUM

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Abstract

A flexible guide for a rotary resonator mechanism, in particular of a horological movement, the guide (1, 10, 30, 40, 50) including a first support (2, 11), an element (3, 13) movable relative to the first support, a first pair of flexible strips (14, 15) connecting the first support to the movable element, so that the movable element (3, 13) can displace relative to the first support by bending the strips in a circular movement about a centre of rotation (6, 18), the flexible guide being arranged substantially in a plane, including a prestressing device (7, 27, 37, 47), the prestressing device being configured to apply a force for buckling the flexible strips (14, 15) by bringing the first support (2, 11) closer to the movable element (3, 13), so that the flexible guide includes two stable positions (28, 29) of the element movable relative to the movable element (3, 13) for which the return moment is zero, the two stable positions (28, 29) having a predetermined angle (2 alpha) of rotation therebetween.

Description

technical field [0001] The invention relates to a flexible guide for a rotating resonator mechanism. The invention also relates to a set of stacked flexible guides for a rotating resonator mechanism. The invention also relates to a timepiece movement provided with such a flexible guide or with such a set of superimposed flexible guides. Background technique [0002] Most of today's mechanical watches are provided with hairsprings and Swiss lever escapements. The hairspring forms the time base of the watch. It is also called a resonator. [0003] The escapement in turn fulfills two main functions: [0004] - maintain the back and forth motion of the resonator; [0005] - Count these back and forth movements. [0006] The Swiss lever escapement has low energy efficiency (around 30%). This inefficiency is caused by the fact that the movement of the escapement is jerky, there is a drop or lost path to accommodate machining errors, and also by the fact that several parts t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B15/00G04B17/04G04B17/26G04B17/28G04B17/30G04B17/32
CPCG04B17/28G04B17/26G04B17/04G04B17/30G04B17/32G04B15/00G04B17/045G04B17/00G04B17/08
Inventor P·温克勒J-L·埃尔费尔Y-A·科桑迪耶
Owner ETA SA MFG HORLOGERE SUISSE
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