Timepiece display mobile component with friction adjustment mechanism

Patent metadata

Field	Value
Publication number	US-11467539-B2
Application number	US-201916664040-A
Country	US
Kind code	B2
Filing date	Oct 25, 2019
Priority date	Dec 13, 2018
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

Timepiece display mobile component (1) comprising at least one resilient strip (4) returned to a display axis (DA), to cooperate in a friction drive with an arbor (2) of a drive mobile component (3) of a movement (100) or a mechanism, about the axis (DA), this mobile component (1) includes a flange (5) comprising, facing each resilient strip (4), an aperture (6) for the insertion and guidance of a manual or robotic tool to allow the tool to move the resilient strip (4) away from its rest position, and to insert the mobile component (1) on an arbor (2) when the resilient strip (4) is sufficiently far away to allow this mobile component to pass, and to ensure a constant friction value of all the resilient strips (4) on the arbor (2) when they are in frictional cooperation with the arbor (2) and when the tool is no longer in contact with the resilient strips (4).

First claim

The invention claimed is:

1. A timepiece display mobile component ( 1 ) comprising at least one resilient strip ( 4 ) intended to be returned to a rest position close to a display axis (DA), to cooperate in a friction drive with an arbor ( 2 ) comprised in a drive mobile component ( 3 ) of a movement ( 100 ) or a timepiece mechanism, about said display axis (DA), wherein said display mobile component ( 1 ) includes a flange ( 5 ) comprising, facing each said resilient strip ( 4 ), an aperture ( 6 ) arranged for the insertion and guiding of a tool operated by an operator or by a robotic manipulator, to enable said tool to move said resilient strip ( 4 ) away from its rest position and to insert said display mobile component ( 1 ) on a said arbor ( 2 ) when said resilient strip ( 4 ) is sufficiently far away to allow said mobile component to pass, and to ensure a constant friction value of all of said resilient strips ( 4 ) on said arbor ( 2 ) when said resilient strips ( 4 ) are in frictional cooperation with said arbor ( 2 ) and when said tool is no longer in contact with said resilient strips ( 4 ), and wherein all of said resilient strips ( 4 ) comprised in said display mobile component ( 1 ) are part of a common resilient one-piece structure ( 7 ), characterized in that said resilient one-piece structure ( 7 ) is either removable and arranged to be assembled in a fixed position with said flange ( 5 ), or arranged to be pivotally mounted on said flange ( 5 ) to allow a greater radial extension of said resilient strips ( 4 ) with respect to said display axis (DA) and comprises indexing elements ( 8 ) arranged to cooperate with complementary indexing elements ( 9 ) comprised in said flange ( 5 ) to make them integral in rotation when said resilient strips ( 4 ) are in frictional cooperation with said arbor ( 2 ) and when said tool is no longer in contact with said resilient strips ( 4 ).

2. The timepiece display mobile component ( 1 ) according to claim 1 , characterized in that said display mobile component ( 1 ) includes a plurality of said resilient strips ( 4 ) arranged such that the resultant, on said display axis (DA), of the radial forces exerted by said resilient strips on a said arbor ( 2 ) is zero.

3. The timepiece display mobile component ( 1 ) according to claim 2 , characterized in that said display mobile component ( 1 ) includes two said resilient strips ( 4 ), symmetrically arranged with respect to said display axis (DA), and in that said apertures ( 6 ) are symmetrical oblong grooves with respect to said display axis (DA).

4. The timepiece display mobile component ( 1 ) according to claim 3 , characterized in that said apertures ( 6 ) are rectilinear oblong grooves ( 61 ; 62 ) passing through said display axis (DA).

5. The timepiece display mobile component ( 1 ) according to claim 1 , characterized in that said resilient one-piece structure ( 7 ) is arranged to be pivotally mounted on said flange ( 5 ), to allow a greater radial extension of said resilient strips ( 4 ) with respect to said display axis (DA), and includes indexing elements ( 8 ) arranged to cooperate with complementary indexing elements ( 9 ) comprised in said flange ( 5 ), to make them integral in rotation when said resilient strips ( 4 ) are in frictional cooperation with said arbor ( 2 ) and when said tool is no longer in contact with said resilient strips ( 4 ), and in that said flange ( 5 ) includes, facing each said resilient strip ( 4 ), a relief portion ( 11 ) arranged to rest on said resilient strip ( 4 ) between, on one hand, its point of attachment ( 12 ) or fastening to said resilient one-piece structure ( 7 ), and, on the other, a friction area ( 13 ) comprised in said resilient strip ( 4 ) in proximity to said display axis (DA), to change the abutment force exerted by said resilient strips ( 4 ) as a function of the relative angular position between said flange ( 5 ) and said resilient one-piece structure ( 7 ).

6. The timepiece display mobile component ( 1 ) according to claim 1 , characterized in that each said resilient strip ( 4 ) comprises at least one attachment ( 41 ) to said flange ( 5 ) or to a common resilient one-piece structure ( 7 ) placed on said flange ( 5 ), which attachment ( 41 ) is remote from said display axis (DA) in order to allow a maximum motion of said resilient strip ( 4 ) in a radial travel with respect to said display axis (DA) and near to said display axis (DA).

7. The timepiece display mobile component ( 1 ) according to claim 6 , characterized in that each said resilient strip ( 4 ) is cantilevered with respect to its attachment ( 41 ), and comprises, at the distal end thereof, or in proximity to the distal end thereof, a friction area ( 13 ) arranged to cooperate in frictional cooperation with a said arbor ( 2 ).

8. The timepiece display mobile component ( 1 ) according to claim 1 , characterized in that said apertures ( 6 ) comprise at least a first through guide hole ( 61 ) arranged to allow the insertion of a first end of a tool and at least a second through guide hole ( 62 ) which is arranged to allow the insertion of a second end of a tool, and in that, in at least one relative angular position between said flange ( 5 ) and said at least one resilient strip ( 4 ), and in a rest position of said at least one resilient strip ( 4 ), said at least one resilient strip ( 4 ) is in at least partial superposition with said first through guide hole ( 61 ) and/or said second through guide hole ( 62 ), in order to be moved away from said display axis (DA) during the insertion of said first end and said second end of a tool and/or during a relative rotation between said flange ( 5 ) and each said resilient strip ( 4 ) under the effect of a rotation imparted by a user to a said tool following the insertion thereof.

9. The timepiece display adjustment assembly ( 200 ) comprising at least one display mobile component ( 1 ) according to claim 1 , characterized in that said adjustment assembly ( 200 ) comprises at least one tool ( 201 ) for manual use or for a robotic manipulator, said tool having ends ( 202 ) arranged to cooperate in a complementary manner with said apertures ( 6 ) comprised in said at least one display mobile component ( 1 ), which includes an aperture ( 6 ) remote from the aperture facing a said single resilient strip ( 4 ) when said at least one display mobile component ( 1 ) has only one said resilient strip ( 4 ).

10. A timepiece mechanism ( 300 ) comprising at least one drive mobile component ( 3 ) comprising an arbor ( 2 ) arranged to cooperate with a display adjustment assembly ( 200 ) according to claim 9 .

11. A timepiece mechanism ( 300 ) comprising at least one drive mobile component ( 3 ) comprising an arbor ( 2 ) arranged to cooperate with a display mobile component ( 1 ) according to claim 1 .

12. The timepiece mechanism ( 300 ) according to claim 11 , characterized in that at least one said arbor ( 2 ) has a groove or shoulders forming means for limiting the endshake of said display mobile component ( 1 ) in the direction of said display axis (DA).

13. A watch ( 500 ) including at least one mechanism ( 300 ) according to claim 11 , and/or at least one display mobile component ( 1 ) according to claim 1 .

14. A timepiece movement ( 100 ) including at least one display mobile component ( 1 ) according to claim 1 .

15. A watch ( 500 ) including at least one display mobile component ( 1 ) according to claim 1 .

16. A watch ( 500 ) including at least one display adjustment assembly ( 200 ) according to claim 9 .

Assignees

• Montres Breguet Sa
• Montres Breouet SA

Inventors

• Rochat Fabrice
• Zaugg Alain

Classifications

• G04B13/021

  elastic fitting with a spindle, axis or shaft · CPC title

• F16D7/021

  with radially applied torque-limiting friction surfaces (F16D7/022 takes precedence) · CPC title

• F16H55/17

  Toothed wheels (worm wheels F16H55/22; chain wheels F16H55/30) · CPC title

• G04B35/00

  Adjusting the gear train, e.g. the backlash of the arbors, depth of meshing of the gears {(adjusting the escapement G04B15/12)} · CPC title

• G04B17/20

  Compensation of mechanisms for stabilising frequency · CPC title