Timepiece mechanism indicating a maximum value of a measured physical variable and timepiece comprising such a mechanism

Patent metadata

Field	Value
Publication number	US-12474673-B2
Application number	US-202217740462-A
Country	US
Kind code	B2
Filing date	May 10, 2022
Priority date	Aug 10, 2021
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

Provided is an ambient physical variable measuring device ( 5 ) including an element configured to mechanically deform under the effect of a variation of a physical variable to rotate a physical variable measured value indication train including a physical variable maximum value display wheel ( 21 ). An indexing mechanism ( 40 ) to index the position of a physical variable maximum value display train ( 24 ) at each advance, the indexing mechanism ( 40 ) comprising a blocking organ ( 41 ) cooperating with an indexing wheel assembly ( 43 ). The the indexing wheel assembly ( 43 ) is kinematically connected to the physical variable maximum value display wheel ( 21 ) by a gear train T 1, T 2 and in that the gear ratio of the gear train T 1, T 2 between the physical variable maximum value display wheel ( 21 ) and the indexing wheel assembly ( 43 ) is a multiplication ratio.

First claim

The invention claimed is:

1 . A timepiece mechanism ( 100 ) comprising:
an ambient physical variable measuring device ( 5 ) comprising an element configured to mechanically deform under the effect of a variation of said physical variable; a physical variable measured value indication train ( 10 ) kinematically linked to the physical variable measuring device, in such a way as to be rotated under the effect of a variation of the ambient value of the physical variable; a physical variable maximum value indication mechanism ( 20 ) comprising a physical variable maximum value display train ( 24 ) comprising a physical variable maximum value display wheel ( 21 ), said physical variable maximum value indication mechanism ( 20 ) comprising a physical variable maximum value indicator organ ( 23 ) integral with the physical variable maximum value display wheel ( 21 ); a drive mechanism ( 30 ) configured to gradually drive the physical variable maximum value display train ( 24 ) during an increase of the ambient physical variable; an indexing mechanism ( 40 ) to index the position of the physical variable maximum value display train ( 24 ) at each advance, the indexing mechanism ( 40 ) comprising a blocking organ ( 41 ) contacting and cooperating with an indexing wheel assembly ( 43 ); wherein the indexing wheel assembly ( 43 ) is kinematically connected to the physical variable maximum value display wheel ( 21 ) by a gear train and in that the gear ratio of the gear train between the physical variable maximum value display wheel ( 21 ) and the indexing wheel assembly ( 43 ) is a multiplication ratio.

2 . The timepiece mechanism ( 100 ) according to claim 1 , wherein the indexing mechanism ( 40 ) comprises an intermediate indexing wheel assembly ( 70 ) inserted between the physical variable maximum value display wheel ( 21 ) and the indexing wheel assembly ( 43 ) such that said gear train is formed by the cooperation between the physical variable maximum value display wheel ( 21 ), the intermediate indexing wheel assembly ( 70 ) and the indexing wheel assembly ( 43 ).

3 . The timepiece mechanism ( 100 ) according to claim 2 , wherein the indexing wheel assembly ( 43 ) comprises a central indexing pinion ( 45 ) meshed with the intermediate indexing wheel assembly ( 70 ), such that said gear train is formed by the cooperation between the physical variable maximum value display wheel ( 21 ), the intermediate indexing wheel assembly ( 70 ) and the central indexing pinion ( 45 ).

4 . The timepiece mechanism ( 100 ) according to claim 3 , wherein the indexing wheel assembly ( 43 ) comprises an indexing toothed wheel ( 44 ) integral with the central indexing pinion ( 45 ).

5 . The timepiece mechanism ( 100 ) according to claim 4 , wherein said indexing toothed wheel ( 44 ) comprises an asymmetric toothing ( 48 ), said blocking organ ( 41 ) cooperating with the asymmetric toothing ( 48 ) of the indexing toothed wheel ( 44 ).

6 . The timepiece mechanism ( 100 ) according to claim 4 , wherein said indexing toothed wheel ( 44 ) comprises a toothed sector less than 360°, such that said indexing toothed wheel ( 44 ) comprises at least one angular sector (Z 1 , Z 2 ) devoid of at least one indexing tooth.

7 . The timepiece mechanism ( 100 ) according to claim 6 , wherein said at least one angular sector (Z 1 , Z 2 ) devoid of at least one indexing tooth is positioned close to a reference indexing position (PO) of the indexing wheel assembly ( 43 ).

8 . The timepiece mechanism ( 100 ) according to claim 1 , wherein said blocking organ ( 41 ) is a blocking organ that can be uncoupled via a zero-reset lever ( 60 ).

9 . The timepiece mechanism ( 100 ) according to claim 1 , wherein the indexing mechanism ( 40 ) comprises a return organ ( 49 ) configured to ensure a repositioning of the physical variable maximum value display train ( 24 ) under the effect of a return element ( 47 ).

10 . The timepiece mechanism ( 100 ) according to claim 9 , wherein the return organ ( 49 ) cooperates with the indexing wheel assembly ( 43 ).

11 . The timepiece mechanism ( 100 ) according to claim 2 , wherein the indexing mechanism ( 40 ) comprises a return organ ( 49 ) configured to ensure a repositioning of the physical variable maximum value display train ( 24 ) under the effect of a return element ( 47 ), the return organ ( 49 ) cooperating with the intermediate indexing wheel assembly ( 70 ).

12 . The timepiece mechanism ( 100 ) according to claim 11 , wherein the return organ ( 49 ) cooperates with the intermediate indexing pinion ( 72 ) of the intermediate indexing wheel assembly ( 70 ).

13 . The timepiece mechanism ( 100 ) according to claim 1 , wherein the drive mechanism ( 30 ) comprises a first wheel assembly ( 31 ), known as driver wheel assembly, integral with an arbor ( 33 ), meshed with the physical variable measured value indication train ( 10 ), and a second wheel assembly ( 32 ), known as follower wheel assembly, freely mounted about the arbor ( 33 ) of the first wheel assembly ( 31 ), said second wheel assembly ( 32 ) being meshed with the physical variable maximum value indication train ( 24 ), said first wheel assembly ( 31 ) being configured to drive the second wheel assembly ( 32 ) during an increase of the value of the ambient physical variable.

14 . The timepiece mechanism ( 100 ) according to claim 13 , wherein the drive mechanism ( 30 ) comprises a drive pin ( 34 ) integral with the first wheel assembly ( 31 ) cooperating with an opening ( 35 ) arranged in the second wheel assembly ( 32 ).

15 . The timepiece mechanism ( 100 ) according to claim 1 , wherein the timepiece mechanism comprises:
an ambient pressure measuring device ( 5 ) comprising an element configured to mechanically deform under the effect of a pressure variation; a measured pressure indication train ( 10 ) kinematically linked to the pressure measuring device, in such a way as to be rotated under the effect of a variation of the ambient pressure; a maximum pressure indication mechanism ( 20 ) comprising a maximum pressure display train ( 24 ) comprising a maximum pressure display wheel ( 21 ), said maximum pressure indication mechanism ( 20 ) comprising a maximum pressure indicator organ ( 23 ) integral with the maximum pressure display wheel ( 21 ); a drive mechanism ( 30 ) configured to gradually drive the maximum pressure display train ( 24 ) during an increase of the ambient pressure; an indexing mechanism ( 40 ) to index the position of the maximum pressure display train ( 24 ) at each advance, the indexing mechanism ( 40 ) comprising a blocking organ ( 41 ) cooperating with an indexing wheel assembly ( 43 ); wherein the indexing wheel assembly ( 43 ) is kinematically connected to the maximum pressure display wheel ( 21 ) by a gear train and in that the gear ratio of the gear train between the maximum pressure display wheel ( 21 ) and the indexing wheel assembly ( 43 ) is a multiplication ratio.

16 . A depth gauge comprising said timepiece mechanism ( 100 ) according to claim 1 .

17 . A altimeter comprising said timepiece mechanism ( 100 ) according to claim 1 .

18 . A horological movement comprising said timepiece mechanism ( 100 ) according to claim 1 .

19 . A timepiece comprising said horological movement according to claim 18 .

Assignees

• Blancpain Sa

Inventors

• Boscaroli Guillaume
• Monferrer Bernat

Classifications

• G04B13/027

  planar toothing: shape and design (adjusting the backlash of the arbors G04B35/00) · CPC title

• G04B47/066 Primary

  with a pressure sensor · CPC title