Timepiece mechanism for control of a plurality of displays

Patent metadata

Field	Value
Publication number	US-10338530-B2
Application number	US-201715811763-A
Country	US
Kind code	B2
Filing date	Nov 14, 2017
Priority date	Dec 6, 2016
Publication date	Jul 2, 2019
Grant date	Jul 2, 2019

Abstract

A control mechanism for control of a plurality of timepiece displays, including a group with one first display and one second display which are separate, driven, according to a reference period, by a timepiece movement, and including, for each group of displays, a train provided to drive, according to a control period, a control moving body, this mechanism including, for each group, a first control element, for control of the first display, and a second control element, for control of the second display, at different moments within the control period, and control device for disengaging the first and the second control elements, including a control lever, which is provided to pivot with a to-and-from motion, according to a limited angular course, and which supports the first control element and the second control element.

First claim

What is claimed is:

1. A control mechanism to control a plurality of timepiece displays, said plurality of displays comprising at least one group comprising a first display and a second display which are separate,
the control mechanism being driven by a moving body of a timepiece movement,
the control mechanism comprising, for each said group of displays, a train to drive a control mobile body according to a control period,
the control mechanism further comprising, for each said group, a first control element to control said first display, and a second control element to control said second display, at different moments within the control period, and
wherein the control mechanism comprises a pivoting control lever to pivot with a to-and-from motion according to a limited angular course, and said control lever supports said first control element and said second control element to sequentially disengage said first control element and said second control element respectively from a first train driving said first display and a second train driving said second display according to the to-and-fro motion.

2. The control mechanism according to claim 1 , wherein said control moving body is integral with a control cam, a profile of said control cam determines the control moments, and which is provided to cooperate with a receiving cam that is part of said control lever, the profile of said control cam and a cooperating profile of said receiving cam controlling the to-and-from motion, according to the limited angular course of said control lever over a complete oscillation cycle, and said control lever disengaging and engaging said first control element and said second control element with said first display and said second display respectively.

3. The control mechanism according to claim 2 , wherein said control cam is a male cam, the profile is an external profile of said control cam that cooperates with the cooperating profile, which is an internal profile of said receiving cam which is a female cam.

4. The control mechanism according to claim 1 , wherein the first control element is a first disengageable pawl which comprises a first beak to control said first display and is moveable according to a first limited angular course and in direct opposition to first elastic restoring mechanism, and wherein said second control element is a second disengageable pawl which comprises a second beak to control said second display and is moveable according to a second limited angular course and in direct opposition to second elastic restoring mechanism.

5. The control mechanism according to claim 4 , wherein the first limited angular course of said first pawl is limited by cooperation of abutting faces of said first pawl with a first stop pin supported by said control lever, and wherein the second limited angular course of said second pawl is limited by cooperation of other abutting faces of said second pawl with a second stop pin supported by said control lever,
positioning of a stop and restoring by said first elastic restoring mechanism or respectively second elastic restoring mechanism on an arm of said first pawl or said second pawl, ensures disengagement of one of said first or second pawl that has fulfilled a drive control function to leave a field free for the other of said first and second pawl.

6. The control mechanism according to claim 4 , wherein said first pawl and said second pawl are identical to each other, said first elastic restoring mechanism and said second elastic restoring mechanism are identical to each other, and said first pawl and said second pawl are disposed on both sides of a plane of said control lever.

7. A timepiece display mechanism comprising a plurality of displays, said plurality of displays comprising at least one group comprising a first display and a second display which are separate, wherein said display mechanism comprises, for said at least one group, a control mechanism according to claim 4 , said first disengageable pawl is provided to drive said first train, and said second disnengageable pawl is provided to drive said second train, the driving of said first train and of said second train being implemented at different moments during the control period.

8. The display mechanism according to claim 7 , wherein said first elastic restoring mechanism and said second elastic restoring mechanism, exert a restoring torque for disengagement during an oscillation cycle of the control mechanism, and the restoring torque providing a moment that is less at least by a tenth than a restoring moment of a first sprung arm and of a second sprung arm which respectively ensure both retention and jump of said first display and of said second display.

9. The display mechanism according to claim 7 , wherein said display mechanism also comprises, for said at least one group, a bidirectional correction mechanism which is controlled by action of a user on an adjustment mechanism acting on a corrector pinion, said correction mechanism comprising a corrector lever which pivots coaxially to said corrector pinion on a shaft of said corrector pinion, and said corrector lever supporting said corrector pinion,
a first intermediate moving body provided to drive said first train, and a second intermediate moving body provided to drive said second train, said correction mechanism comprising at least one elastic element, said at least one elastic element is provided to return said corrector lever into a neutral position in the absence of action by the user on said adjustment mechanism,
when said first intermediate moving body is disengaged from said first train and said second intermediate moving body is disengaged from said second train, said bidirectional correction mechanism having at least one of a frictional connection between said corrector lever and said shaft of said corrector pinion and a frictional connection between said elastic element and both said first intermediate moving body and said second intermediate moving body.

10. A timepiece movement comprising a display mechanism according to claim 7 , said movement comprising a motor mechanism comprising a drive moving body which is provided to drive the control mechanism.

11. A watch comprising a display mechanism according to claim 7 .

Assignees

• Eta Sa Mft Horlogere Suisse

Inventors

• Saglini Julien

Classifications

• G04B19/268

  with indicators for the phases of the moon · CPC title

• G04B19/25 Primary

  Devices for setting the date indicators manually · CPC title

• G04B19/065

  with several parts · CPC title

• G04B19/25373

  driven or released stepwise by an energy source which is released at determined moments by the clockwork movement · CPC title

• G04B19/025 Primary

  for simultaneous indicating on several dials (indicating means allowing simultaneous indication G04B19/048; with several separate dials G04B19/08; extra hands for indicating different local apparent times G04B19/23; with several clockworks G04B37/0083) · CPC title