Bolt intended to limit the axial travel of a moving body of a horological movement and horological movement including the same

Patent metadata

Field	Value
Publication number	US-12487561-B2
Application number	US-202217960562-A
Country	US
Kind code	B2
Filing date	Oct 5, 2022
Priority date	Dec 7, 2021
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

A bolt (10) configured to limit the axial travel of a moving body (21) of a horological movement (20). The bolt includes a head (11) arranged at the end of an arbor (12) extending according to a longitudinal axis of revolution, the head (11) extending radially with respect to the arbor (12) and including over a portion of its periphery, a radial addendum (110) configured to be arranged opposite said moving body (21), and including, at the interface with the arbor (12), a bearing base (111) through which the bolt (10) is configured to rest against a structure (22) of the horological movement (20).

First claim

The invention claimed is:

1 . A bolt ( 10 ) configured to limit the axial travel of a moving body ( 21 ) of a horological movement ( 20 ), said bolt ( 10 ) comprising a head ( 11 ) arranged at the end of an arbor ( 12 ) extending according to a longitudinal axis of revolution, said head ( 11 ) extending radially with respect to the arbor ( 12 ) and including a radial addendum ( 110 ) extending over a portion of a periphery of the head ( 11 ), said radial addendum ( 110 ) configured to be arranged opposite said moving body ( 21 ), and including, at the junction with the arbor ( 12 ), a bearing base ( 111 ) through which the bolt ( 10 ) is configured to rest against a structure ( 22 ) of the horological movement ( 20 ), the bearing base ( 111 ) protruding from a lower surface of the radial addendum ( 110 ) along the longitudinal axis of revolution,
wherein the base ( 111 ) has a central overthickness ( 112 ) extending around the arbor ( 12 ) so as to allow limiting the bearing surface of said base ( 111 ) on the structure ( 22 ) of the horological movement ( 20 ), and wherein the central overthickness ( 112 ) has an axisymmetric cylindrical shape that protrudes from a lower surface of the base ( 111 ), the central overthickness ( 112 ) having an axis that is coincident with the longitudinal axis of revolution.

2 . The bolt ( 10 ) according to claim 1 , wherein the head ( 11 ) includes a relief ( 13 ) adapted to cooperate with a tool so as to subject said head ( 11 ) to a force moment about the longitudinal axis of the arbor ( 12 ).

3 . The bolt ( 10 ) according to claim 1 , wherein the arbor ( 12 ) includes an annular groove ( 120 ) contiguous to the head ( 11 ).

4 . The bolt ( 10 ) according to claim 1 , wherein the arbor ( 12 ) includes an annular boss ( 121 ).

5 . The bolt ( 10 ) according to claim 1 , wherein the radial addendum ( 110 ) includes a chamfer or a fillet ( 113 ) intended to face the moving body ( 21 ).

6 . The bolt ( 10 ) according to claim 1 , wherein the head ( 11 ) includes a planar surface ( 116 ) parallel to the longitudinal axis of the arbor ( 12 ), configured to be arranged bearing against a bearing surface of the structure ( 22 ) of the horological movement ( 20 ).

7 . The bolt ( 10 ) according to claim 1 , wherein a free end of the arbor ( 12 ) includes a chamfer ( 122 ).

8 . A horological movement ( 20 ) comprising a moving body ( 21 ) arranged on a structure ( 22 ) of the horological movement ( 20 ), said structure ( 22 ) comprising a housing ( 220 ) in which a bolt ( 10 ) according to claim 1 is fitted, so as to be movable in rotation about the longitudinal axis of the arbor ( 12 ), between an unlocking position, in which the radial addendum ( 110 ) is set back with respect to the moving body ( 21 ), and a blocking position in which the radial addendum ( 110 ) faces the moving body ( 21 ).

9 . The horological movement ( 20 ) according to claim 8 , wherein the bolt ( 10 ) is configured so that, when it is arranged in the blocking position, the radial addendum ( 110 ) is arranged at a distance from the moving body ( 21 ).

10 . The horological movement ( 10 ) according to claim 8 , wherein the structure ( 22 ) comprises at least two housings ( 220 ) distributed around the moving body ( 21 ), in each of which a bolt ( 10 ) is fitted.

11 . The bolt ( 10 ) according to claim 1 , wherein, with respect to a plane perpendicular to the longitudinal axis of revolution, a radial length of the central overthickness ( 112 ) is less than a radial length of the base ( 111 ), and is greater than a radial length of the arbor ( 12 ).

Assignees

• Eta Sa Mft Horlogere Suisse

Inventors

• Christan Julien

Classifications

• G04B19/26

  Clocks or watches with indicators for tides, for the phases of the moon, or the like {(planetaria G09B27/00 - G09B27/06; arrangements for table reference, e.g. menstrual tables G06C3/00)} · CPC title

• G04B43/002

  Component shock protection arrangements (shock damping bearings G04B31/02; shock-damping in the case G04B37/04; protection of the pendulum or chime during transport G04B41/00) · CPC title

• G04B37/04

  Mounting the clockwork in the case; Shock absorbing mountings · CPC title

• G04B19/14 Primary

  Fastening the dials to the clock or watch plates {(tools, arrangements and machines for the manufacture of watch plates G04D3/0048)} · CPC title

• G04B29/04 Primary

  Connecting or supporting parts · CPC title