Flexible horological component, particularly for an oscillator mechanism, and horological movement including such a component

Patent metadata

Field	Value
Publication number	US-12306589-B2
Application number	US-202017113810-A
Country	US
Kind code	B2
Filing date	Dec 7, 2020
Priority date	Dec 20, 2019
Publication date	May 20, 2025
Grant date	May 20, 2025

Abstract

A flexible horological component for an oscillator mechanism of a horological movement, the component extending along a principal plane (P) and including at least a part made of a composite material ( 1 ), the composite material ( 1 ) including a matrix ( 2 ) and a multitude of nanotubes or nanowires ( 3 ) distributed in the matrix ( 2 ), the nanotubes or nanowires ( 3 ) being juxtaposed and disposed substantially parallel with an axis (A) substantially perpendicular to the plane (P) of the component, the matrix including a flexible filling material ( 4 ) to fill the interstices between the nanotubes or nanowires ( 3 ), the filling material ( 4 ) comprising at least in part a thermal compensation material wherein the thermoelastic coefficient (TEC) is of the opposite sign to that of the other materials of the composite material ( 1 ).

First claim

The invention claimed is:

1. A flexible horological component for an oscillator mechanism of a horological movement, the flexible horological component extending along a principal plane, the flexible horological component comprising:
a part made of a composite material, wherein the composite material comprises a matrix and a multitude of nanowires distributed in the matrix, the nanowires being juxtaposed and disposed substantially parallel with an axis substantially perpendicular to the principal plane of the flexible horological component, the matrix including a flexible filling material that fills interstices between the nanowires, the flexible filling material comprising at least in part a thermal compensation material wherein the thermoelastic coefficient (TEC) is of the opposite sign to that of the other materials of the composite material,
wherein the nanowires have a diameter within a range ranging from 2 to 50 nm, and
the thermal compensation material forms an outer layer of the matrix that surrounds the nanowires in at least directions perpendicular to the axis, or the thermal compensation material is arranged directly on the nanowires.

2. The flexible horological component according to claim 1 , wherein the thermal compensation material has a thermoelastic coefficient greater than 0.

3. The flexible horological component according to claim 2 , wherein the thermal compensation material includes silicon oxide SiO2.

4. The flexible horological component according to claim 2 , wherein the thermal compensation material includes Niobium.

5. The flexible horological component according to claim 1 , wherein the thermal compensation material forms the outer layer of the matrix.

6. The flexible horological component according to claim 1 , wherein the thermal compensation material is arranged directly on the nanowires.

7. The flexible horological component according to claim 1 , wherein the nanowires are made using an element to be selected from the following list: gold, silicon, silicon oxide, boron nitride, gallium nitride, silicon nitride, zinc oxide, gallium arsenide, tungsten sulphide, silver, copper, manganese arsenide, indium arsenide.

8. The flexible horological component according to claim 1 , wherein the nanowires have a length within a range ranging from 100 to 500 microns.

9. The flexible horological component according to claim 8 , wherein the length of the nanowires is within a range ranging from 100 to 300 microns.

10. The flexible horological component according to claim 9 , wherein the length of the nanowires is within a range ranging from 150 to 200 microns.

11. The flexible horological component according to claim 1 , wherein the flexible filling material further includes an element to be selected from the following list: silicon, tungsten, parylene, hexagonal boron nitride, Al2O3 type monocrystalline ruby, diamond, tungsten disulfide, molybdenum disulfide, graphite, lead, silicon carbide, nickel, indium phosphide, titanium oxide, and silicon.

12. The flexible horological component according to claim 1 , wherein the flexible horological component is a spiral spring of an oscillator mechanism, or a flexible blade guide of an oscillator mechanism.

13. A horological movement, comprising the flexible horological component according to claim 1 .

14. The flexible horological component according to claim 1 , wherein the diameter of the nanowires is within a range ranging from 3 to 15 nm.

15. The flexible horological component according to claim 14 , wherein the diameter of the nanowires is within a range ranging from 5 to 10 nm.

16. The flexible horological component according to claim 1 , wherein
the flexible filling material further includes an element to be selected from the following list: silicon, tungsten, parylene, hexagonal boron nitride, Al2O3 type monocrystalline ruby, diamond, tungsten, or molybdenum disulphides, graphite, lead, silicon carbide, nickel, indium phosphide, titanium oxide, and silicon, and
wherein the thermal compensation material forms the outer layer of the matrix and is not within the interstices, and
wherein the element is within the interstices.

17. The flexible horological component according to claim 1 , wherein
the flexible filling material further includes an element to be selected from the following list: silicon, tungsten, parylene, hexagonal boron nitride, Al2O3 type monocrystalline ruby, diamond, tungsten disulfide, molybdenum disulfide, graphite, lead, silicon carbide, nickel, indium phosphide, titanium oxide, and silicon, and
wherein the thermal compensation material is arranged directly on the nanowires, and
wherein the element covers at least portions of the thermal compensation material on the nanowires.

18. The flexible horological component according to claim 1 , wherein the thermal compensation material forms the outer layer of the matrix that surrounds the nanowires in at least the directions perpendicular to the axis.

19. The flexible horological component according to claim 1 , wherein the thermal compensation material fills the interstices between the nanowires.

20. The flexible horological component according to claim 1 , wherein the thermal compensation material forms the outer layer of the matrix that surrounds the nanowires in at least the directions perpendicular to the axis, and the thermal compensation material is arranged directly on the nanowires.

Assignees

• Nivarox Far Sa

Inventors

• Cusin Pierre
• Charbon Christian

Classifications

• G04B17/32

  Component parts or constructional details, e.g. collet, stud {, virole or piton} · CPC title

• G04B17/06 Primary

  Oscillators with hairsprings, e.g. balance {(electrically driven balances G04C3/04; contacts actuated by a balance G04C13/065)} · CPC title

• G04B17/045 Primary

  with oscillating blade springs (mechanical oscillations maintained by electro-magnetic means, e.g. tuning forks G04C3/10) · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• G04B17/227

  composition and manufacture of the material used (composition and manufacture of hairsprings G04B17/066; of springs G04B1/145; anti-magnetic alloys G04B43/007; ferrous alloys C22C; non-ferrous alloys C22C, B22F) · CPC title