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Device for guiding pivoting and clockpiece resonator mechanism for pivoting mass

A mass body and resonator technology, applied in the field of pivoting guide devices, can solve the problems of unequal timing and unequal timing

Active Publication Date: 2021-02-02
ETA SA MFG HORLOGERE SUISSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The return torque is not exactly linear, which can lead to anisochronism depending on the amplitude of the mass
Also, moving the center of mass of the mechanism too much can also cause anisochronism due to its orientation with respect to gravity

Method used

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  • Device for guiding pivoting and clockpiece resonator mechanism for pivoting mass
  • Device for guiding pivoting and clockpiece resonator mechanism for pivoting mass
  • Device for guiding pivoting and clockpiece resonator mechanism for pivoting mass

Examples

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Embodiment Construction

[0054] The invention relates to a device 1 for rotatably pivotally guiding a pivot mass about an imaginary pivot axis A, such as figure 1 shown. The device is preferably arranged substantially in one plane. The pivot axis A is perpendicular to the plane of the device 1 . The device 1 comprises a fixed support 2 and a rotating support 3 for forming or supporting a pivoting mass.

[0055]The device 1 comprises a first flexible leaf 4 and a second flexible leaf 5 and an intermediate leaf 6 connecting the first flexible leaf 4 to the second flexible leaf 5 . The first blade 4 and the second blade 5 preferably have similar or even the same cross-sectional inertia. The invention is described in a preferred specific case where the most flexible blade is straight. However, other geometries are also possible, such as coil shapes or other shapes.

[0056] The stiffness of the intermediate blade 6 is significantly greater than that of the flexible blades 4,5. In other words, the in...

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PUM

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Abstract

A device for rotary pivoting and guiding of a pivoting mass about a virtual pivoting axis. The device includes a first support which is fixed and a second support which forms or supports the pivotingmass. The device includes a first and second flexible leaf oriented in the same direction when the device is at rest, and an intermediate leaf having a rigidity notably greater than the flexible leaves and connecting the first flexible leaf to the second, the device including a first fixed link formed by the first support and a first end of the first leaf, a second fixed link formed by a second end of the first leaf and by a first end of the intermediate leaf, a third fixed link formed by a second end of the intermediate leaf and by a first end of the second leaf and a fourth fixed link formedby at least one second end of the second leaf, wherein the first and / or the fourth link is arranged substantially between the second and the third link in the direction when the device is at rest.

Description

technical field [0001] The invention relates to a pivoting guide for a pivoting mass. [0002] The invention also relates to a timepiece resonator mechanism comprising at least two pivoting guides. [0003] The invention also relates to a timepiece movement comprising such a resonator mechanism. Background technique [0004] Flexible guides with virtual pivots could significantly improve watch resonators. The simplest is a cross spring pivot consisting of two guides where the straight blades meet, usually perpendicularly. The two blades can be three-dimensional objects in two different planes, or two-dimensional objects in the same plane, so as if they were welded at their intersection. [0005] A 3D cross spring pivot for an oscillator can be optimized to attempt to synchronize it to the rate regardless of its orientation in the gravitational field, in particular in two ways (either independently of each other, or both together): [0006] - Choose the intersection posit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B15/14G04B17/32
CPCG04B15/14G04B17/32G04B17/045G04B17/28
Inventor J-L·海尔弗P·温克勒
Owner ETA SA MFG HORLOGERE SUISSE