EP4121822A1 - Mechanical stop and start system for a function, and watch comprising such a system - Google Patents
Mechanical stop and start system for a function, and watch comprising such a systemInfo
- Publication number
- EP4121822A1 EP4121822A1 EP21711842.1A EP21711842A EP4121822A1 EP 4121822 A1 EP4121822 A1 EP 4121822A1 EP 21711842 A EP21711842 A EP 21711842A EP 4121822 A1 EP4121822 A1 EP 4121822A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mass
- function
- watch
- spring
- angle
- 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.)
- Granted
Links
- 230000005484 gravity Effects 0.000 claims abstract description 24
- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000002040 relaxant effect Effects 0.000 claims abstract description 3
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 230000000007 visual effect Effects 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000005226 mechanical processes and functions Effects 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 description 9
- 230000005291 magnetic effect Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 210000000707 wrist Anatomy 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000005292 diamagnetic effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
- G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
- G04F7/06—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator running only during the time interval to be measured, e.g. stop-watch
- G04F7/065—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator running only during the time interval to be measured, e.g. stop-watch with start-stop control arrangements
-
- 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
- G04B21/00—Indicating the time by acoustic means
- G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
- G04B21/12—Reiterating watches or clocks
-
- 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
- G04B5/00—Automatic winding up
- G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
- G04B5/04—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is limited
- G04B5/08—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is limited acting in both directions
-
- 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
- G04B11/00—Click devices; Stop clicks; Clutches
- G04B11/001—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power
-
- 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
- G04B11/00—Click devices; Stop clicks; Clutches
- G04B11/001—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power
- G04B11/005—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power with magnetic elements
-
- 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
- G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
- G04B45/0007—Light-, colour-, line-, or spot-effects caused by parts or pictures moved by the clockwork
-
- 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
- G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
- G04B45/0038—Figures or parts thereof moved by the clockwork
- G04B45/0046—Figures or parts thereof moved by the clockwork with oscillating motion, in pocket- or wrist watches
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
- G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
- G04F7/08—Watches or clocks with stop devices, e.g. chronograph
- G04F7/0842—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms
- G04F7/0847—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms with column wheel
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
- G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
- G04F7/08—Watches or clocks with stop devices, e.g. chronograph
- G04F7/0842—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms
- G04F7/0852—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms with member having a rotational two-way movement, e.g. navette
Definitions
- the present invention relates to the field of watchmaking and relates to a system for starting and stopping a mechanical function.
- starting the function we define the passage of the function, from an initial state, at rest, to a second state, active, and by stopping the function, we define the reverse passage from the active state to the state of rest.
- Document US3541781 discloses a mechanism for detecting whether a wearer is standing or seated and for counting the time spent in these positions.
- a lever is mounted to rotate freely, and comes under the sole action of its weight, and depending on the position of the device, block or leave free, an anchor wheel of a counting gear.
- this mechanism is not very precise and the positions of the device in which the measurement starts or stops are not defined.
- the present invention aims to provide a control mechanism of a function, which can be used in a mechanical watch, that is to say which does not use electronic or electrical elements, and which is at least partially remedied the drawbacks of the prior art.
- the invention relates to a system for starting and stopping a mechanical function of a timepiece, comprising a mass, movably mounted on a frame, between a first and a second position ex treme, defined respectively by a first and a second abutment, said mass moving, under the effect of gravity, by forcing a spring between the first and second extreme positions, and by relaxing said spring between the second and first extreme positions, said mass being connected kinematically or directly to a control member of said function.
- the mass and the force of the spring are determined as a function of the force necessary to control said function and move the pilot member, and predetermined spatial orientations of the frame, in which the mass is bistably displaced by one to the other of its extreme positions, according to the resultant of the forces exerted by the spring and by gravity, the displacement of the mass from the first extreme position to the second extreme position being able to cause the starting or the stopping said function by the intermediary of the control member, and the displacement of the mass from the second extreme position to the first extreme position being able to cause the stopping or starting respectively of said function by the intermediary of the steering body.
- This definition of the invention extends to a system for controlling a function of a timepiece, capable of occupying a first state and a second state, in particular an animation.
- the invention also relates to a watch comprising such a starting and stopping system.
- FIG. 1 shows a definition chosen for the axes of rotation that a watch can undergo when worn
- FIG. 2 and Figure 4 are views of the starting and stopping system according to a particular embodiment, respectively in a first and a second extreme positions, and
- FIG. 3 shows a watch comprising a system according to the invention, for positioning reference axes and angles.
- the object of the present invention is to provide a mechanical switch, making it possible to start and stop a function, on command, but without pressure or direct mechanical action on the switch. More precisely, the starting and stopping system according to the invention makes it possible to start and stop the function, according to the spatial orientation of the system and therefore of the watch in which it is integrated. As will be understood below, different sizes are possible, but a preferred embodiment is to size and arrange the system according to the invention so that the function starts when the wearer performs the usual gesture. to read the time when the watch is on his wrist and the function stops when he rotates the wrist, for example to put his arm in a more vertical position.
- the system for starting and stopping a function comprises a mass, of the oscillating mass type, movably mounted on a watch frame, between a first and a second extreme positions.
- the latter are defined respectively by a first and a second stopper, which may be elastic in order to absorb shocks.
- a spring is connected to the mass.
- the connection between the spring and the mass is preferably direct, so that the movements of the mass directly affect the winding of the spring. More particularly, when the mass moves under the effect of gravity, following a gesture by the wearer which sets it in motion, the spring is arranged so as to be constrained by the mass when it moves between the first and the second extreme position. Conversely, when the mass moves between the second and first extreme positions, the spring relaxes and, if necessary, returns the stored energy to the mass, against gravity.
- the mass is kinematically or directly connected to a control member of said function.
- the connection between the mass and the pilot member is desmodromic.
- This connection may be of the meshing type with a pinion or a rack carried by the mass and meshing with the control member.
- the mass can also directly carry a magnet, which can pilot magnetically, for example visual animation type functions as will be detailed below.
- the mass (of the mass) as well as the force of the spring are determined as a function of the force necessary to control said function and to move the control member.
- the system is also dimensioned according to the predetermined angular orientations of the watch, in which the mass is moved from one to the other of its extreme positions, according to the resultant of the forces. exerted by the spring and by gravity, the displacement of the mass from one of said extreme positions to the other causing the starting, respectively the stopping of said function by means of the control member.
- the function is started when the wearer brings the watch to his gaze in a reading position.
- the spring must also be dimensioned both in terms of its stiffness and of its preload. Its function is to keep the mass in abutment in its first extreme position, against gravity, as long as the watch has not been placed in the corresponding orientation. Beyond this orientation, the force exerted by gravity is greater than the force exerted by the res sort, and the mass moves when starting the function.
- the spring also has the function, when the mass is in abutment in its second extreme position, of returning the mass to its first extreme position when the force exerted by gravity becomes smaller than the force exerted by the spring. The mass then stops the function.
- an unbalanced mass mounted mobile in rotation like an automatic winding oscillating mass, some of which operate with a limited angular travel.
- the unbalance which includes the eccentricity of the mass, which has an effect on the torque supplied.
- the mass can also have a linear or complex trajectory.
- a start orientation and a stop orientation are predetermined.
- the mass is of the bistable type and is maintained in its first extreme position as long as the watch has not passed the starting orientation, and is maintained in its second extreme position as long as the watch has not passed through. stop orientation.
- an oscillating weight of an automatic winder does not make it possible to stop the winding function.
- the winding and non-winding positions do not take place. are not predefined and do not correspond to specific spatial orientations of the watch.
- the ground can be connected to a speed regulator.
- a speed regulator may be an escapement, for example at rubbing rest as used in certain ringing tones, or a centrifugal weight brake, also of the type used in ringing tones. It is also possible to use a magnetic or oil bath brake device.
- a device for blocking the mass can be provided.
- This device is advantageously accessible from the outside of the watch. It can consist of a pusher or a latch cooperating directly or indirectly with the mass to block its movements, preferably in one of its extreme positions.
- the system according to the invention can be arranged in the form of an independent module, comprising its own frame and mounted on a base movement.
- the mechanism or components making it possible to perform the function to be controlled may also be arranged on the frame or be arranged on the base movement.
- a kinematic or other connection magnetic for example, will be provided between the module and the basic movement.
- the system according to the invention can be used to control, that is to say start and stop, a function of which the mechanism which enables it to be carried out is arranged in the watch.
- An example of a function that can be controlled by the system according to the invention is a visual animation.
- the visual animation can be controlled mechanically, for example by releasing or blocking a barrel, respectively when the mass is in its first or second extreme positions.
- This barrel can drive an automaton, of the jacquemart type, typically by dragging a cam on which a movable element is kept pressed.
- an automaton typically by dragging a cam on which a movable element is kept pressed.
- this magnet By mounting a magnet on the mass or by having a magnet driven by the mass, this magnet can cause the displacement of a moving paramagnetic or diamagnetic element, capable of reacting to the displacement of the magnet by moving itself. This movement may be guided by mounting said movable element, for example in rotation or on a guide rail.
- Figure 2 there is shown an example of a particular embodiment of a starting and stopping system according to the invention.
- the function to be controlled is an animation, controlled by the movement of an ai mant.
- the mass is an oscillating mass 10, mounted to move in rotation. It is fitted with a set of teeth 100, in engagement with a set of teeth 120 integral with the control member, which takes the form of a lever 12, mounted to pivot on the frame of the module or of the timepiece. .
- the teeth 100 and 120 are advantageously incomplete, that is to say they are arranged on a toothed sector, less than 360 °, given that the oscillating mass 10 is limited in its rotation between its two extreme positions, by two stops not shown. In the exemplary embodiment, the reduction ratio between the teeth is taken equal to -1.
- the spring 14 is of the spiral type, acting on the control member, according to the example at the level of the axis of rotation of the lever, by a first of its ends. The other end is attached to the frame.
- the lever 12 at its end opposite its axis of rotation, carries a magnet 16.
- the latter acts on a magnetic element, mobile, movable for example above the dial, to be visible to a user, while the start and stop system is hidden under the dial.
- the spring 14 is preloaded, according to the example in a clockwise direction.
- the spring 14 will therefore apply a torque in the clockwise direction to the lever, transmitting both to the oscillating weight 10, via the gear link, a torque tending to make it rotate in the anti-clockwise direction.
- the oscillating mass 10 is in its first extreme position, against a so-called high stop (not shown in the drawing).
- the system is therefore in equilibrium in a first stable position.
- the magnetic element positioned by the magnet is also in a first stable position. In this first position, it can be hidden behind a cover so as not to be visible to the wearer.
- Torque mass d * m * gravity * sine (alpha) * cosine (beta) Beta being the angle (with a sign according to narrow trigonometric standards) of the center of mass with respect to the 9h-3h axis (figure 2)
- the torque of the return spring (brought back to the center of rotation of the mass) is constant as long as Beta remains the same and its value is:
- BetaO being the angle Beta when the mass is in its first stable position.
- the oscillating weight 10 tends to rotate clockwise and therefore remains in abutment, in the second stable position.
- the torque generated by gravity will be smaller than the resistive torque of the function and of the return spring.
- the oscillating mass 10 will therefore pivot around its axis, in the anti-clockwise direction (Beta will increase). The mass will remain in motion as long as it has not returned to its first extreme position or the torque generated by gravity becomes greater than the resistive torques again.
- control system may be used, as equivalent to the term start and stop system.
- the function can also be a ringing mechanism, the triggering of which can be resumed with a ringing in passing.
- the barrel is released or blocked depending on the position of the mass, respectively when it is in its first or second extreme positions.
- the latter is re-mounted by a winding mechanism, either specific or via the winding of the main barrel of the movement.
- This winding can be manual or automatic.
- a kinematic connection of the gear type (pinion or rack)
- wheels or pinion such as for example a set of na vettes or a chronograph column wheel
- the resetting phase can advantageously be carried out by a push-button acting separately on the control member and on the conventional zero-resetting elements (hammers, etc.).
- a kinematic connection with the unbalanced mass can also cause the displacement of at least one movable flap on or under the main dial, of a sub-dial or of a part of a dial, to modify the appearance of the watch, or let specific displays appear.
- Polarized lenses can be used and moved via this or these movable shutters.
- Such flaps can also be moved by releasing a barrel, like what has been described above.
- the system according to the invention makes it possible to control a function by starting and stopping it, or by controlling its passage from a first state to a second state, and vice versa, when the watch respectively occupies a first state. and a second spatial orientations. These particular spatial orientations correspond to the first and second extreme positions of a mass. These positions are determined and thanks to the bistable nature of the displacement of the mass, the passage from one state to another of the function is precise, corresponding to a specific spatial orientation.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Unknown Time Intervals (AREA)
- Electromechanical Clocks (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH00340/20A CH717249A1 (en) | 2020-03-20 | 2020-03-20 | System for starting and stopping a function and watch comprising such a system. |
PCT/EP2021/056102 WO2021185655A1 (en) | 2020-03-20 | 2021-03-10 | Mechanical stop and start system for a function, and watch comprising such a system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4121822A1 true EP4121822A1 (en) | 2023-01-25 |
EP4121822B1 EP4121822B1 (en) | 2024-05-01 |
Family
ID=70616881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21711842.1A Active EP4121822B1 (en) | 2020-03-20 | 2021-03-10 | Mechanical stop and start system for a function, and watch comprising such a system |
Country Status (6)
Country | Link |
---|---|
US (1) | US20230139184A1 (en) |
EP (1) | EP4121822B1 (en) |
JP (1) | JP2023518037A (en) |
CN (1) | CN115280248A (en) |
CH (1) | CH717249A1 (en) |
WO (1) | WO2021185655A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4361739A1 (en) * | 2022-10-27 | 2024-05-01 | Dubois & Depraz S.A. | Function selection system for watch |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH4882A (en) * | 1892-02-08 | 1892-09-15 | Normanville Samuel Augustine D | Advanced alarm clock |
US1712013A (en) * | 1925-09-22 | 1929-05-07 | Watson Robert | Automobile clock |
US3165883A (en) * | 1962-06-14 | 1965-01-19 | Lnt Entpr | Fast draw timer |
US3541781A (en) * | 1968-09-09 | 1970-11-24 | Walter L Bloom | Apparatus for measuring time spent standing or walking |
US3948037A (en) * | 1975-01-22 | 1976-04-06 | Carlone Eugene R | Wrist position-actuatable switch |
DE602006015261D1 (en) * | 2005-07-08 | 2010-08-19 | Richemont Int Sa | Clock |
CH712372B1 (en) * | 2016-04-18 | 2020-12-30 | Jerome Marcu | Wristwatch or pocket watch including a display device. |
-
2020
- 2020-03-20 CH CH00340/20A patent/CH717249A1/en unknown
-
2021
- 2021-03-10 US US17/911,913 patent/US20230139184A1/en active Pending
- 2021-03-10 EP EP21711842.1A patent/EP4121822B1/en active Active
- 2021-03-10 JP JP2022555637A patent/JP2023518037A/en active Pending
- 2021-03-10 CN CN202180021080.7A patent/CN115280248A/en active Pending
- 2021-03-10 WO PCT/EP2021/056102 patent/WO2021185655A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
EP4121822B1 (en) | 2024-05-01 |
US20230139184A1 (en) | 2023-05-04 |
CN115280248A (en) | 2022-11-01 |
WO2021185655A1 (en) | 2021-09-23 |
JP2023518037A (en) | 2023-04-27 |
CH717249A1 (en) | 2021-09-30 |
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