Shock absorber body for a balance of a horological oscillator

Patent metadata

Field	Value
Publication number	US-9632483-B2
Application number	US-201414224906-A
Country	US
Kind code	B2
Filing date	Mar 25, 2014
Priority date	May 1, 2013
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

A shock-absorber body ( 11 ) for an assembled balance ( 6 ) of a horological oscillator ( 8 ), comprising a guiding portion ( 11 a ) for the shock-absorber body ( 1 ) for its mounting on a bridge ( 2 ) and a fastening element ( 13 ) for an outer end of a spiral spring ( 5 ) of the oscillator.

First claim

The invention claimed is:

1. A shock-absorber body configured for an assembled balance of a horological oscillator, comprising:
(i) a guiding portion for mounting the shock-absorber body on a bridge,
wherein the guiding portion comprises a rotational driving zone about a longitudinal axis of the shock-absorber body, the zone comprising a conformation to allow the shock-absorber body to be driven in rotation,
wherein the rotational driving zone includes a peripheral outwardly-oriented cylindrical surface symmetrical around a longitudinal axis,
(ii) at least one shoulder extending outwardly relative to the peripheral cylindrical surface, and
(iii) a fastening element for fastening an outer end of a spiral spring of the oscillator to the shock-absorber body,
wherein the fastening element is integrally mounted with the guiding portion, so that the fastening element is positioned by positioning the guiding portion of the shock-absorber body,
wherein the guiding portion is configured to be positioned by rotating the shock-absorber body relative to a balance bridge.

2. The shock-absorber body as claimed in claim 1 , which comprises a first shock-absorber body part including a portion configured for receiving a second shock-absorber body part including the fastening element for an outer end of a spiral spring of the oscillator, the second shock-absorber body part being mounted onto the first shock-absorber body part.

3. The shock-absorber body as claimed in claim 1 , wherein the conformation allows the shock-absorber body to be driven in rotation using a tool.

4. The shock-absorber body as claimed in claim 1 , wherein the fastening element for an outer end of a spiral spring of the oscillator is made of one piece with the guiding portion of the shock-absorber body.

5. The shock-absorber body as claimed in claim 1 , wherein the fastening element for an outer end of a spiral spring of the oscillator is a balance spring stud holder.

6. The shock-absorber body as claimed in claim 1 , wherein the fastening element for an end of a spiral spring of the oscillator has a first bearing surface at least partially complementing and substantially parallel to a second bearing surface of the spiral and a third bearing of the fastening element which make it possible to retain the first, second and third bearing surfaces.

7. The shock-absorber body as claimed in claim 1 , which comprises a friction element opposing the free rotation of the shock-absorber body relative to the bridge.

8. The shock-absorber body as claimed in claim 7 , wherein at least one of (i) the friction element comprises at least one shoulder intended to bear on the bridge and (ii) the friction element comprises an elastic return element.

9. A shock-absorber configured for an assembled balance of a horological oscillator, wherein the shock-absorber comprises a shock-absorber body as claimed in claim 1 , a pivoting jewel, a counter-pivot jewel, and a spring for holding these jewels in the body.

10. An assembly comprising a shock-absorber body as claimed in claim 1 and a bridge, wherein conformations of the shock-absorber body and conformations of the bridge cooperate obstacle-fashion to retain the shock-absorber body relative to the bridge in one direction or in two directions along the longitudinal axis of the shock-absorber body.

11. The assembly as claimed in claim 10 , which comprises an elastic element interposed between the bridge and the shock-absorber body.

12. Timepiece movement comprising a shock-absorber body as claimed in claim 1 .

13. A timepiece comprising a movement as claimed in claim 12 .

14. A method for putting a timepiece movement comprising (i) a horological oscillator comprising an assembled balance, and (ii) the shock-absorber body as claimed in claim 1 into beats, wherein the method comprises positioning the shock-absorber body in the timepiece movement by rotation of the shock-absorber body about a longitudinal axis of the shock-absorber body.

15. A method for producing an assembly, comprising (i) shock-absorber body configured for an assembled balance of a horological oscillator, and (ii) a bridge, the method comprising the following steps:
supplying a first shock-absorber body part;
supplying the bridge;
introducing the first shock-absorber body part into a bore of the bridge; and
mounting a second shock-absorber body part, on the first shock-absorber body part,
so that the assembly comprises the shock-absorber body according to claim 1 .

16. The method of claim 15 , comprising providing the assembly in a timepiece movement, and adjusting the timepiece movement so as to put the timepiece movement into beats, said adjusting comprising positioning the shock-absorber body of the assembly by rotation of the shock-absorber body about a longitudinal axis of the shock-absorber body.

17. Timepiece movement comprising (i) a horological oscillator comprising an assembled balance, and (ii) the shock-absorber body according to claim 1 , wherein the timepiece movement has been obtained by implementation of a method for putting the timepiece movement into beats, wherein the method comprises positioning the shock-absorber body in the timepiece movement by rotation of the shock-absorber body about a longitudinal axis of the shock-absorber body.

18. Timepiece movement comprising an assembly comprising (i) a shock-absorber body configured for an assembled balance of a horological oscillator, and (ii) a bridge, wherein the assembly has been obtained by implementation of a method for producing an assembly comprising:
supplying a first shock-absorber body part;
supplying the bridge;
introducing the first shock-absorber body part into a bore of the bridge; and
mounting a second shock-absorber body part, on the first shock-absorber body part,
so that the assembly comprises the shock-absorber body according to claim 1 .

19. The shock-absorber body as claimed in claim 2 , wherein the second shock-absorber body part is driven onto the first shock-absorber body part.

20. The shock-absorber body as claimed in claim 1 , wherein the conformation is a knurling or a notching or a polygonal conformation or teeth or flats.

21. The shock-absorber body as claimed in claim 1 , wherein the shock-absorber body is produced as a plurality of assembled parts.

22. A shock-absorber comprising a shock-absorber body as claimed in claim 1 and a pivoting jewel.

23. An assembly comprising:
a shock-absorber body configured for an assembled balance of a horological oscillator, comprising:
a guiding portion for mounting the shock-absorber body on a bridge,
a fastening element for fastening an outer end of a spiral spring of the oscillator to the shock-absorber body,
a bridge, and
an elastic element interposed between the bridge and the shock-absorber body,
wherein the fastening element is integrally mounted with the guiding portion, so that the fastening element is positioned by positioning the guiding portion of the shock-absorber body, and
wherein conformations of the shock-absorber body and conformations of the bridge cooperate obstacle-fashion to retain the shock-absorber body in one direction or in two directions in the direction of the axis of the shock-absorber body, relative to the bridge.

24. A method for putting a timepiece movement comprising (i) a horological oscillator comprising an assembled balance, and (ii) the assembly as claimed in claim 23 into beats, wherein the metho

Assignees

• Rolex Sa

Inventors

• Boulenguiez Benoit
• Bertrand Jean-Louis
• Burger Frederic

Classifications

• Y10T29/49581

  having arbor, pinion, or balance · 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

• G04B17/26 Primary

  for the effect of variations of the impulses · CPC title

• G04B31/02

  Shock-damping bearings {(shock damping in the case G04B37/052, G04B37/055, G04B37/0418)} · CPC title