EP4328674A1 - Bremsvorrichtung für eine uhr - Google Patents
Bremsvorrichtung für eine uhr Download PDFInfo
- Publication number
- EP4328674A1 EP4328674A1 EP22191788.3A EP22191788A EP4328674A1 EP 4328674 A1 EP4328674 A1 EP 4328674A1 EP 22191788 A EP22191788 A EP 22191788A EP 4328674 A1 EP4328674 A1 EP 4328674A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mobile
- braking
- kinematic chain
- drive
- display member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002045 lasting effect Effects 0.000 claims 1
- 210000000056 organ Anatomy 0.000 description 3
- 241000287107 Passer Species 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000036461 convulsion Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B19/00—Indicating the time by visual means
- G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
- G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
- G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
- G04B19/253—Driving or releasing mechanisms
- G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B19/00—Indicating the time by visual means
- G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
- G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
- G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
- G04B19/253—Driving or releasing mechanisms
- G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
- G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B19/00—Indicating the time by visual means
- G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
- G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
- G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
- G04B19/253—Driving or releasing mechanisms
- G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
- G04B19/25373—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by an energy source which is released at determined moments by the clockwork movement
Definitions
- the present invention relates to a braking device capable of being integrated into a watchmaking device.
- the present invention relates in particular to a braking device making it possible to brake a kinematic chain of a watchmaking device.
- the same drive mobile can intermittently and sometimes differentiatedly drive at least two members, for example at least two display members, each member being driven via a kinematic chain distinct.
- the drive mobile advances, for example, step by step at a rate determined depending on the nature of the device.
- Intermittent training means that at least certain organs are not trained at each step of the training mobile, and differentiated means that the organs can each be trained at different times.
- both display members are generally driven by the same drive wheel via two separate kinematic chains.
- the training mobile advances one step every twenty-four hours.
- the two display elements are driven simultaneously. But the most of the time, only the units indicator is driven by the drive mobile.
- the 31st day of the month passes to the 1st day of the following month, on the other hand, only the tens display member is driven by the drive mobile and goes from “3” to “0” or to none. digit while the unit display remains stationary displaying “1”.
- a large date calendar is for example described in the European patent application EP 3 786 723 in the name of the plaintiff.
- Such a watch device must be configured so that the energy released at each step by the drive mobile is sufficient to simultaneously drive all the display members.
- all the energy developed by the drive mobile is directed towards the remaining display member(s), respectively towards the kinematic chain(s) driving them.
- This excess energy can lead to oscillations, double jumps or bounces of the driven display unit(s), which can even lead to blocking of the corresponding kinematic chain.
- This problem is all the more present as the pace is rapid. It is, for example, particularly present in devices whose pitch is almost instantaneous, for example caused by the sudden release of a spring.
- the energy absorbed by the kinematic chain driving the tens display represents less than half of the total energy, and the reduction in energy directed to the kinematic chain driving the units display compared to when the latter is driven alone does not prevent its rotation.
- the energy directed towards the kinematic chain driving the tens display member is much more important than during other tens changes.
- An aim of the present invention is to provide a braking device which makes it possible to brake a mobile watch device intermittently and selectively, that is to say at predetermined times.
- the expression “display member” includes any member allowing the display of temporal information, the creation of a decorative effect, or any other visual effect.
- a braking device for braking a kinematic chain of a watchmaking device
- the device brake comprising a tangential brake and a mobile comprising a braking element integral in rotation with the mobile, the mobile being intended to form part of a kinematic chain of a watchmaking device and to be driven step by step by taking several steps per revolution
- the tangential brake and the braking element being configured to come into contact by friction for at least one step at each revolution of the mobile and not to come into contact with one another for at least one step at each turn of the mobile.
- the tangential brake and the braking element being configured to only brake the mobile by friction between them during certain steps at each revolution of the mobile, it is possible, using the braking device of the invention to only brake the kinematic chain of which the mobile is part only when necessary.
- the braking element is preferably a braking cam comprising at least one finger intended to come into contact by friction with the tangential brake.
- the braking element comprises at least one pin or a stud formed with the mobile or fixed to the latter.
- a watch device comprising a drive mobile, a first display member driven by the drive mobile via a first kinematic chain, a second display member driven intermittently by the drive mobile via a second kinematic chain, in which the first kinematic chain comprises such a braking device configured to brake the first kinematic chain when the drive mobile drives the first display member and does not drive the second display member.
- the first kinematic chain can thus be braked so as to absorb the excess energy due to the non-drive of the second kinematic chain.
- the drive mobile is for example configured to be driven by rapid steps, for example caused by the sudden relaxation of a spring.
- the second kinematic chain comprises a second braking device according to the invention configured to brake the second kinematic chain when the drive mobile drives the second display member and does not drive the first display member. display, thus also protecting the second kinematic chain and therefore the second display member against excess kinematic energy coming from the drive mobile.
- the watch device may include a third display member driven intermittently by the drive wheel via a third kinematic chain.
- the watch device then comprises for example a plurality of braking devices according to the invention, the plurality of braking devices being configured to brake the first kinematic chain when the drive mobile drives the first display member and does not drive the third display member; and/or to brake the second kinematic chain when the drive mobile drives the second display member and does not drive the first and/or third display member; and/or to brake the third kinematic chain when the drive mobile drives the third display member and does not drive the first and/or the second display member.
- the watchmaking device is for example a date display device, a chronograph, a countdown timer or a automaton.
- a timepiece comprising such a timepiece device.
- the braking device 1 comprises a tangential brake 2 and a mobile 4, the tangential brake 2 intermittently rubbing a braking element, for example a braking cam 42, of the mobile 4 during of the rotation of the latter to brake the mobile 4.
- the mobile 4 is for example a mobile intended to be part of a kinematic chain driving a display member of a watch device comprising at least two display members driven by the same drive member via at least two separate kinematic chains.
- the mobile 4 includes for example a tens star intended to be integrated into a “big date” type calendar to form part of the kinematic chain driving the tens display member.
- the braking device 1 is configured so that the brake 2 acts on the mobile 4 intermittently and selectively.
- the mobile 4 advances for example by four steps per revolution and the brake 2 acts on the mobile 4 only during one step out of four, during the step corresponding for example to the transition from "3" to "0 » of the tens indicator of a “big date” date during which the units indicator remains stationary.
- the tangential brake 2 is attached for example to a fixed stud 3 relative to the axis of rotation of the mobile 4.
- the mobile 4 is for example intended to be driven step by step by performing four steps per turn. Mobile 4 thus turns 90° with each step.
- the mobile 4 comprises a braking cam 42 configured to come into contact with the tangential brake 2 during one step per revolution of the mobile 4.
- the braking cam 42 thus comprises a finger on its periphery intended to rub against the tangential brake 2 when he passes in front of the latter.
- the dimensions of the finger, in particular its height, as well as the position and elasticity of the tangential brake 2 are determined to obtain the desired braking force depending on the use which will be made of the braking device 1.
- the mobile 4 comprises three stages each having a different function: a first stage not visible in the figures comprises for example four teeth, forming for example a tens star, to drive the mobile 4 in rotation under the action of a driving mobile, for example a tens cam of a date of the "large date"type; an optional second stage forms for example an anti-double-jump device 41 intended to cooperate with the leading mobile to avoid a double jump of the mobile when it advances by one step and/or to avoid its involuntary rotation between two steps; a third stage forms the braking cam 42 to brake the mobile 4 every fourth step in cooperation with the tangential brake 2.
- the mobile 4 is for example in one piece.
- the braking cam 42 is for example formed by the clearance over part of their height of three out of four corners of the anti-double-jump device 41.
- the brake 2 is positioned at the height of the braking cam 42 and dimensioned so not to come into contact with the anti-double-jump device 41.
- the mobile 4 is a single piece. According to other embodiments, the mobile 4 is formed by the assembly of several elements integral in rotation, for example an element comprising four star teeth, an optional element comprising an anti-double-jump device and an element forming the brake cam; an element comprising four star teeth and optionally an anti-double-jump device, and an element forming the braking cam; etc.
- the anti-double-jump device being optional, if it is not present, the mobile only includes two stages: a stage configured for driving the mobile and a stage configured for its intermittent braking by the tangential brake.
- the mobile 4 comprises a braking cam 42 comprising a finger to come into contact with the tangential brake 2 during one step at each revolution.
- a braking cam 42 comprising a finger to come into contact with the tangential brake 2 during one step at each revolution.
- Other embodiments of the braking element intended to come into contact with the tangential brake to brake the mobile are however possible within the framework of the invention.
- the braking cam may include several fingers in order to brake the mobile for more than one step per revolution.
- the braking cam will however comprise at least one part configured not to come into contact with the tangential brake, so that the mobile is not braked for at least one step per revolution.
- the mobile can for example comprise one or more pins or studs arranged for example on one or more teeth drive of the mobile or on one or more corners of the anti-double-jump device.
- the pins or studs are for example formed integrally with the mobile or fixed to the latter.
- the mobile 4 can also be configured to perform a number of steps per revolution other than four, but greater than one.
- the braking device 1 is capable of being integrated into a watch device comprising a drive mobile, a first mobile, for example a first display mobile, driven intermittently by the drive mobile by via a first kinematic chain, a second mobile, for example a second display mobile driven intermittently by the drive mobile via a second kinematic chain, the braking device being configured to brake the first kinematic chain when the drive mobile drives the first mobile and does not drive the second mobile.
- the watch device is for example a “large date” type date and the braking device 1 is integrated into the kinematic chain driving the tens indicator.
- a braking device according to the invention it is also possible for a braking device according to the invention to be integrated into the kinematic chain driving the units indicator to brake the latter when the tens indicator is not driven. It is also possible to envisage braking devices according to the invention being integrated into the two kinematic chains so as to brake the two kinematic chains in an intermittent and differentiated manner.
- a watch device comprises several braking devices according to the invention acting on different mobiles of the same kinematic chain and/or on mobiles of different kinematic chains and/or that the brake(s) act several times per revolution of the corresponding mobile(s).
- the braking devices are then configured so as to brake intermittently and differentiated one or the other kinematic chain of the watchmaking device as a function of the kinematic chain(s) driven at the corresponding step in order to guarantee a certain homogeneity of the quantity of energy, and therefore of the torque, transmitted at each step to the driven display members.
- the braking device can be integrated into other types of watchmaking devices, for example a chronograph, a countdown timer, an automaton, or any other watchmaking device comprising at least two driven members of intermittent and differentiated manner by the same drive mobile via at least two distinct kinematic chains.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Unknown Time Intervals (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22191788.3A EP4328674A1 (de) | 2022-08-23 | 2022-08-23 | Bremsvorrichtung für eine uhr |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22191788.3A EP4328674A1 (de) | 2022-08-23 | 2022-08-23 | Bremsvorrichtung für eine uhr |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4328674A1 true EP4328674A1 (de) | 2024-02-28 |
Family
ID=83050140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22191788.3A Pending EP4328674A1 (de) | 2022-08-23 | 2022-08-23 | Bremsvorrichtung für eine uhr |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP4328674A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0083307A1 (de) * | 1981-12-28 | 1983-07-06 | Nouvelle Lémania S.A. | Elektronische Chronographuhr |
EP2977829A1 (de) * | 2014-07-24 | 2016-01-27 | ETA SA Manufacture Horlogère Suisse | Anordnung mit beweglichem Bremselement einer Uhr |
EP3483663A1 (de) * | 2017-11-02 | 2019-05-15 | Rolex Sa | Antriebsvorrichtung für kalendersystem einer uhr |
EP3786723A1 (de) | 2019-08-30 | 2021-03-03 | Patek Philippe SA Genève | Anzeigemechanismus |
-
2022
- 2022-08-23 EP EP22191788.3A patent/EP4328674A1/de active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0083307A1 (de) * | 1981-12-28 | 1983-07-06 | Nouvelle Lémania S.A. | Elektronische Chronographuhr |
EP2977829A1 (de) * | 2014-07-24 | 2016-01-27 | ETA SA Manufacture Horlogère Suisse | Anordnung mit beweglichem Bremselement einer Uhr |
EP3483663A1 (de) * | 2017-11-02 | 2019-05-15 | Rolex Sa | Antriebsvorrichtung für kalendersystem einer uhr |
EP3786723A1 (de) | 2019-08-30 | 2021-03-03 | Patek Philippe SA Genève | Anzeigemechanismus |
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