EP4399575A1 - Inertia element for a clock movement - Google Patents
Inertia element for a clock movementInfo
- Publication number
- EP4399575A1 EP4399575A1 EP22776957.7A EP22776957A EP4399575A1 EP 4399575 A1 EP4399575 A1 EP 4399575A1 EP 22776957 A EP22776957 A EP 22776957A EP 4399575 A1 EP4399575 A1 EP 4399575A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inertial element
- paramagnetic
- pqxcm
- oscillator
- timepiece
- 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
- 239000000463 material Substances 0.000 claims abstract description 59
- 230000005298 paramagnetic effect Effects 0.000 claims abstract description 40
- 230000005292 diamagnetic effect Effects 0.000 claims abstract description 6
- 230000005291 magnetic effect Effects 0.000 claims description 52
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 31
- 230000001105 regulatory effect Effects 0.000 claims description 27
- 229910001369 Brass Inorganic materials 0.000 claims description 26
- 239000010951 brass Substances 0.000 claims description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 239000000919 ceramic Substances 0.000 claims description 17
- 239000002907 paramagnetic material Substances 0.000 claims description 15
- 239000002889 diamagnetic material Substances 0.000 claims description 14
- 239000004020 conductor Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 239000010979 ruby Substances 0.000 claims description 6
- 229910001750 ruby Inorganic materials 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims 1
- 239000000615 nonconductor Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000952 Be alloy Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052790 beryllium Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000889 permalloy Inorganic materials 0.000 description 2
- DOSMHBDKKKMIEF-UHFFFAOYSA-N 2-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]-5-[3-[3-[4-(1-methylindol-3-yl)-2,5-dioxopyrrol-3-yl]indol-1-yl]propylsulfamoyl]benzenesulfonate Chemical compound C1=CC(=[N+](CC)CC)C=C2OC3=CC(N(CC)CC)=CC=C3C(C=3C(=CC(=CC=3)S(=O)(=O)NCCCN3C4=CC=CC=C4C(C=4C(NC(=O)C=4C=4C5=CC=CC=C5N(C)C=4)=O)=C3)S([O-])(=O)=O)=C21 DOSMHBDKKKMIEF-UHFFFAOYSA-N 0.000 description 1
- HEFNNWSXXWATRW-UHFFFAOYSA-N Ibuprofen Chemical compound CC(C)CC1=CC=C(C(C)C(O)=O)C=C1 HEFNNWSXXWATRW-UHFFFAOYSA-N 0.000 description 1
- 239000006094 Zerodur Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000013528 metallic particle Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000012056 semi-solid material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010421 standard material Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
-
- 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
- G04B15/00—Escapements
- G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
-
- 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
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/04—Oscillators acting by spring tension
- G04B17/06—Oscillators with hairsprings, e.g. balance
-
- 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
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/04—Oscillators acting by spring tension
- G04B17/06—Oscillators with hairsprings, e.g. balance
- G04B17/063—Balance construction
-
- 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
- G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
-
- 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
- G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
- G04B43/007—Antimagnetic alloys
Definitions
- the invention relates to an inertial element, in particular a balance wheel, for a watch movement.
- the invention also relates to an oscillator comprising such an inertial element.
- the invention also relates to a regulating system comprising such an oscillator or such an inertial element.
- the invention also relates to a watch movement comprising such an oscillator or such an inertial element or such a regulating system.
- the invention finally relates to a timepiece comprising such a horological movement or such an oscillator or such an inertial element or such a regulating system.
- Document CH716862 describes a watch movement and mentions stops at magnetic field values greater than 3,000 G, or even 4,000 G, by the combination of an “amagnetic” hairspring and “amagnetic” metal axes. of the regulating organ.
- the document EP2979139 proposes a specific conformation of a balance shaft (a magnetically inhomogeneous one-piece shaft presenting non-uniform intrinsic magnetic properties in its volume) allowing watches having a non-magnetic balance spring, lever body and escapement wheel to resist, without stopping, magnetic fields of the order of 1 T (10,000 G), and without the mechanical performance (chronometry and aging of the mobiles) being affected.
- the document EP3258325 relates to axes made of ceramic material which offer the advantage of being non-magnetic, and of not influencing the rate of the timepiece when it is subjected to a magnetic field, in particular a magnetic field greater than 32 kA/m (400G).
- the object of the invention is to provide an inertial element making it possible to improve the watchmaking devices known from the prior art and to solve the problems mentioned.
- the invention proposes an inertial element allowing a watch movement to operate without stopping under an intense magnetic field, in particular a magnetic field with an intensity of 8,000 G, even 15,000 G, even 20 ' 000 G, or even 30,000 G, while ensuring a residual rate of less than 1 s/d after such exposure.
- an inertial element is defined by claim 1.
- Embodiments of the inertial element are defined by claims 2 to 10.
- an oscillator is defined by claim 11.
- a regulating system is defined by claim 12 or 13.
- a watch movement is defined by claim 15 or 16.
- a timepiece is defined by claim 17 or 18.
- Figure 1 is a perspective view of one embodiment of a timepiece.
- Figure 2 is a side view of the embodiment of the regulating system of the timepiece of Figure 1.
- the timepiece 300 is by example a watch, in particular a wristwatch.
- the timepiece 300 comprises a timepiece movement 200, intended to be mounted in a case or a timepiece box in order to protect it from the external environment.
- the watch movement 200 can be a mechanical movement, in particular an automatic movement, or even a hybrid movement.
- the watch movement 200 comprises a regulating system 100.
- the regulating system 100 consists of an oscillator 2 and an exhaust system 3.
- Oscillator 2 includes an inertial element 1.
- the oscillator also comprises a hairspring 21 and the inertial element 1 is a balance wheel 1 pivoted on a frame of the watch movement.
- the inertial element comprises a rim 11 made of a first material or comprising a first material.
- the first material :
- - has an electrical resistivity greater than 15 pQxcm, preferably greater than 20 pQxcm.
- the first material is a metallic material and has an electrical resistivity of less than 100 pQxcm or less than 200 pQxcm or less than 1000 pQxcm. Also advantageously, the first material has an electrical resistivity of between 100 pQxcm and 10 3 pQxcm or between 10 3 pQxcm and 10 13 pQxcm or greater than 10 13 pQxcm.
- the inertial element 1 comprises:
- One or more of these elements preferably comprises the first material or is preferably made of the first material.
- the serge, the hub and the arms are made in one piece or made in one piece and are therefore made of the same first material.
- the hub 12 preferably comprises a bore to receive an inertial element axis 23 making it possible to pivot the inertial element 1 on the frame of the watch movement.
- the arms 13 make it possible to mechanically link the hub 12 to the serge 11.
- the arms preferably have an elongated shape.
- the arms extend radially or substantially radially relative to the axis 23.
- the arms can be replaced by any other element making it possible to mechanically link or fix the hub 12 to the rim 11 such as, for example, a support.
- a support can be solid, ie it cannot be crossed in an axial direction parallel to that of the axis 23, ie it does not include any openings crossing it.
- a support can be perforated, ie it comprises perforations which pass through it.
- the support may in particular have the shape of a disk.
- the support can act as a hub and thus be confused with the hub.
- the serge can act as a support or be combined with the support, thus forming a solid or perforated disc.
- the support, the hub and/or the rim can be made of the first material or comprise the first material.
- the hub, the support and the serge can be made in one piece.
- the inertial element may comprise a disk with:
- the first material is:
- the serge 1 1 has a continuous shape (that is to say that it is possible to make a complete turn of the axis 23 while remaining in the material forming the serge), in particular a continuous annular shape like illustrated in Figures 1 and 2.
- the serge of continuous shape in particular of continuous annular shape, is formed of a single material, of preference of a single conductive material such as a metal alloy with high electrical resistivity (for example an electrical resistivity greater than 20 p ⁇ xcm).
- the inertial element 1, in particular the rim 11 may comprise several portions made of different materials, in particular semi-conductor or electrically insulating materials. Each of these materials or some of these materials or one of these materials can constitute the first material. The portions can be solid portions attached or placed on a structure intended to support them.
- the serge 11 may have an interrupted or discontinuous shape, in particular an interrupted or discontinuous annular shape.
- the inertial element is in one piece.
- the inertial element can be formed by assembling several elements.
- the hairspring 21 is made of a paramagnetic or diamagnetic material and having an electrical resistivity greater than 20 p ⁇ xcm.
- the spiral spring 21 has a ferrule 22 and/or a flange 25 made of a paramagnetic or diamagnetic material, in particular titanium or a titanium alloy, and having an electrical resistivity greater than 20 p ⁇ xcm.
- Oscillator 2 further comprises inertial element axis 23.
- inertial element axis 23 is made of paramagnetic or diamagnetic material, in particular ceramic, for example zirconia, or paramagnetic steel or stainless steel. surface hardened paramagnetic or coated paramagnetic steel.
- the axis 23 of the inertial element is advantageously devoid of a support collar for the inertial element 1 . Such a collar is usually provided on the axis of the inertial element to constitute a stop to stop the inertial element relative to the axis during assembly, in particular during driving in, of the inertial element on the axis. .
- Oscillator 2 further comprises a platter 24, in particular a double platter 24, made of or comprising the first material.
- the plate 24 is advantageously attached to the axis 23 of the inertial element, in particular by driving.
- the oscillator may comprise an inertial element mounted on an elastically deformable structure and allowing the pivoting of the inertial element relative to a frame by elastic deformation of the elastically deformable structure.
- the regulating system 100 comprises, in addition to the inertial element 1 described above and/or the oscillator 2 described above, an escapement system 3 comprising one or more escapement components 31, 32, in particular an escapement wheel 31 and an anchor 32.
- the escape wheel 31 comprises a plate 312 and an axle 31 1 .
- the axis 31 1 is housed, in particular driven out, in the plate 312 and makes it possible to pivot the escapement wheel 31 on the frame of the watch movement.
- the shaft 31 1 is advantageously made of paramagnetic or diamagnetic material, in particular ceramic, for example zirconia, or paramagnetic steel or surface-hardened paramagnetic steel or paramagnetic steel coated or in Phynox.
- Plate 312 is advantageously made of paramagnetic or diamagnetic material, in particular CuAl7Si2 or CuNi15Sn8 or lead-free brass CuZn21 Si3P or NiP or titanium or titanium alloy or Co40Cr20Ni16Mo7 (Phynox) or ceramic such as ZrC or 'AhOs or silicon or ruby or glass.
- anchor 32 includes a board 322 and a pin 321.
- Pin 321 is housed, in particular driven out, in plate 322 and makes it possible to pivot anchor 32 on the frame of the watch movement.
- the pin 321 is advantageously made of paramagnetic or diamagnetic material, in particular ceramic, for example zirconia, or paramagnetic steel or surface-hardened paramagnetic steel or coated paramagnetic steel or Phynox.
- Plate 322 is advantageously made of paramagnetic or diamagnetic material, in particular CuAl7Si2 or CuNil 5Sn8 or lead-free brass CuZn21 Si3P or NiP or Titanium or Titanium alloy or Co40Cr20Ni16Mo7 (Phynox) or ceramic such as ZrC or AhOa or silicon or ruby or glass.
- a first configuration aims to obtain small residual steps after exposure to intense magnetic fields (2 T or 20,000 G and more).
- This first configuration consists of a movement (paramagnetic hairspring, balance wheel in CuBe, i.e. in copper-beryllium alloy, in particular a copper-beryllium alloy with 2% beryllium) whose three axes of the regulating system ( balance shaft, anchor rod, escapement pinion) are made of paramagnetic or diamagnetic materials, in this case zirconia, Phynox and Phynox respectively.
- the under-field shutdown typically occurs with a field magnetic field whose intensity is 20,000 G, which is exceptional and significantly higher than the field intensity mentioned in the documents of the state of the art (in particular in the documents CH716862 and EP2979139 and in the standards, as seen above).
- a lead-free brass balance for example of the CuZn21 Si3P type (also called "Ecobrass", according to one of the solutions described above in replacement of a CuBe balance according to the first configuration)
- the use of a lead-free brass balance for example of the CuZn21 Si3P type (also called "Ecobrass", according to one of the solutions described above in replacement of a CuBe balance according to the first configuration)
- the magnetic field intensity limit value causing the movement to stop by more than 60% (at more than 35,000 G), as detailed below.
- the behavior will depend, among other things, on the configuration (and in particular on the materials used for the other components, and/or the possible presence of components conducive to the generation of eddy currents on the balance, etc.), and the geometry of the balance. (serge continues or not).
- the increase in the stopping threshold under magnetic field is very important in increasing the resistivity for a metallic material.
- An increase of several orders of magnitude in the resistivity (by the use of semiconductor or insulating materials in particular) will in all likelihood make it possible to further increase the shutdown threshold under field, but not proportionally.
- Measurements of stopping performance under field were carried out using movements equipped with various variants of components at the level of the escapement and the oscillator (axes, balance wheel), in order to analyze in particular the influence of the use of a lead-free brass pendulum.
- the measurements consisted in determining the stopping intensity under effective field using a superconducting electromagnet making it possible to reach magnetic field intensities of the order of 10 T (100,000 G).
- the tests relate to two movement configurations, each tested on three parts (movements with dial and hands) (Table 1).
- the movements of the two configurations include a paramagnetic NbZr alloy hairspring, paramagnetic NiP pallets and escape wheel, and an “Ecobrass” lead-free brass balance plate. They also include the automaton, spacer and dial (with brass base), and hands.
- the measurements were carried out with a superconducting electromagnet from the manufacturer Oxford Instruments allowing a magnetic field of up to 12 T (120,000 G) to be applied with field homogeneity ⁇ ⁇ 2%.
- the temperature of the working area is 20 ⁇ 2°C.
- Superconducting electromagnets capable of reaching field strengths greater than 15,000 G have the disadvantage of not providing visual access to the sample.
- the stoppage detection criterion considered is based on the E1 state: It is considered that there is no shutdown under field if E1 > -2 min, by considering ⁇ 1 minute of uncertainty on each status report related to manipulations and readings, and assuming that a strong drift walking under field has only a negligible impact on these status readings (considering walking under field of ⁇ 5,000 s/d, the drift over 30 minutes of measurement is around 100 s). In practice, it has been found that the signing of a judgment under scope is clear and unequivocal. Indeed, the measured state differences are grouped into two populations:
- This method involves having to proceed by successive exposures according to different levels at different field strengths.
- An initial field of 2 T (20,000 G) is applied, then the intensity is increased in steps of 0.25 T or 0.5 T (2,500 G or 5,000 G), with stabilization at the maximum field of 3 minutes at least.
- the measurements are carried out simultaneously on several movements.
- a conductive component rotating in a magnetic field is the seat of induced currents, called eddy currents.
- the power dissipated as eddy currents, per unit volume, is given by the expression where f is the frequency of the sinusoid of variation of the magnetic field and Bmax is the amplitude of the sinusoidal field, p e is the electrical resistivity of the material, e the thickness (measured perpendicular to B). Bmax is to be considered as the amplitude of the variable part of the field, which will generate an electric field.
- the dissipative effect linked to the generation of eddy currents is inversely proportional to the electrical resistance of the component and contributes to degrading the performance of the regulating system in a magnetic field. It therefore appears possible to eliminate or at least limit this loss by using a material with high electrical resistivity.
- Lead-free brass such as the CuZn21 Si3P alloy (also called “Ecobrass”) has the advantage over copper-beryllium (CuBe) of having a resistivity approximately 2 to 3 times higher (Table 2) in keeping a comparable density (and therefore a comparable balance wheel inertia for the same dimensions of this component).
- CuBe copper-beryllium
- electrodeposited NiP, Si and zirconia ZrO2 thus seem particularly interesting, in particular for obtaining performance even higher than that of lead-free brass components.
- metallic materials with low resistivity such as for example the use of gold segments deposited on a component made of semiconductor or insulating material to increase inertia. Indeed, such a use is highly detrimental to the performance under magnetic field of the inertial element obtained.
- a serge with an interrupted or discontinuous shape may also be advantageous to use a serge with an interrupted or discontinuous shape to limit dissipation by eddy currents, or to use a serge comprising several portions made of different materials or comprising different materials, in particular with semi-solid materials. electrical conductors or insulators inserted between portions made of conductive materials.
- an annular rim formed of portions or segments in the orthoradial direction consisting of or comprising different materials may for example be advantageous to use an annular rim formed of portions or segments in the orthoradial direction consisting of or comprising different materials.
- the serge may be formed from a succession of layers or portions of different materials (stacked in an axial direction parallel to that of the axis 23 of the balance), for example a serge produced by successive growths of layers materials of different electrical resistivities, for example alternating layers of insulating and conducting materials.
- the serge may be formed from a succession of layers or portions of different materials stacked in a direction radial to the axis 23 of the balance.
- the serge may be formed from a composite of different materials, in particular materials having different electrical resistivities, for example formed from a composite with an insulating ceramic matrix forming a continuous network, in which is infiltrated a metallic conductive material or with an insulating ceramic matrix in which metallic particles are dispersed.
- materials having different electrical resistivities for example formed from a composite with an insulating ceramic matrix forming a continuous network, in which is infiltrated a metallic conductive material or with an insulating ceramic matrix in which metallic particles are dispersed.
- the oscillator 2 comprises components arranged and/or configured so that the oscillator and/or the movement and/or the timepiece has a value stopping magnetic field intensity greater than or equal to 20,000 G or greater than or equal to 35,000 G.
- the regulating system 100 comprises components arranged and/or configured so that the regulating system and/or the movement and/or the timepiece has a field intensity value magnetic stop greater than or equal to 20,000 G or greater than or equal to 35,000 G.
- the movement 200 comprises components arranged and/or configured so that the movement has a stopping magnetic field intensity value greater than or equal to 20,000 G or greater than or equal to 35,000 G.
- the timepiece 300 comprises components arranged and/or configured so that the timepiece has a stopping magnetic field intensity value greater than or equal to 20 '000 G or greater than or equal to 35'000 G.
- the timepiece does not include a magnetic screen (in particular made of mumetal, permalloy or soft iron) enclosing the movement.
- This stopping magnetic field intensity value is defined according to the stopping detection criterion associated with the protocol described above. This protocol is however applied (with the necessary adaptations) either to the oscillator alone, or to the regulating system alone, or to the watch movement alone, or to the timepiece.
- inertial elements, oscillators or regulating systems described above can be used in a watch movement or in a timepiece in order to increase:
- the rim can have the same geometry or substantially the same cross-sectional geometry (along a plane passing through the pivot axis of the balance wheel) regardless of where the rim is considered.
- the serge can only present variations of this section at the level of means of adjusting the unbalance and/or the inertia, such as:
- the rim may not have means for adjusting the unbalance and/or the inertia and have the same geometry or substantially the same cross-sectional geometry regardless of where the rim is considered.
- the serge can be contained between:
- annular part of the serge excluding variations in section at the level of unbalance and/or inertia adjustment means such as recesses or studs or studs, can be contained between:
- the rim can constitute at least 85% of the moment of inertia of the balance around its pivot axis.
- the annular part of the serge excluding variations in section at the level of means for adjusting the unbalance and/or inertia such as recesses or studs or studs and excluding the adjustment means unbalance and/or inertia, can constitute at least 85% of the moment of inertia of the balance around its pivot axis.
- the balance wheel preferably has a structure comprising exclusively:
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Electric Clocks (AREA)
- Micromachines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21195769 | 2021-09-09 | ||
PCT/EP2022/075097 WO2023036928A1 (en) | 2021-09-09 | 2022-09-09 | Inertia element for a clock movement |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4399575A1 true EP4399575A1 (en) | 2024-07-17 |
Family
ID=77710531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22776957.7A Pending EP4399575A1 (en) | 2021-09-09 | 2022-09-09 | Inertia element for a clock movement |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4399575A1 (en) |
JP (1) | JP2024533352A (en) |
CN (1) | CN118103778A (en) |
CH (1) | CH718969A2 (en) |
WO (1) | WO2023036928A1 (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1654597B1 (en) * | 2003-08-13 | 2009-11-11 | Fore Eagle Co Ltd | Thermally-compensated balance wheel |
EP2506093B1 (en) * | 2011-03-30 | 2014-04-09 | Patek Philippe SA Genève | Balance for clockwork |
EP2757423B1 (en) | 2013-01-17 | 2018-07-11 | Omega SA | Part for clockwork |
CH707790B1 (en) | 2013-03-26 | 2017-12-15 | Montres Breguet Sa | Magnetically non-homogenous rotational watchmaking tree. |
EP3258325B1 (en) | 2016-06-13 | 2019-10-30 | Rolex Sa | Timepiece arbor |
FR3093825B1 (en) * | 2019-03-13 | 2021-04-02 | Novasort Sa | THERMOCOMPENSE OSCILLATING SYSTEM |
CH716862B1 (en) | 2019-11-27 | 2024-07-31 | Oris Holding AG | Clock movement resistant to magnetic disturbances and timepiece incorporating it. |
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2022
- 2022-09-09 EP EP22776957.7A patent/EP4399575A1/en active Pending
- 2022-09-09 CN CN202280068683.7A patent/CN118103778A/en active Pending
- 2022-09-09 JP JP2024515294A patent/JP2024533352A/en active Pending
- 2022-09-09 CH CH01055/22A patent/CH718969A2/en unknown
- 2022-09-09 WO PCT/EP2022/075097 patent/WO2023036928A1/en active Application Filing
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JP2024533352A (en) | 2024-09-12 |
CH718969A2 (en) | 2023-03-15 |
CN118103778A (en) | 2024-05-28 |
WO2023036928A1 (en) | 2023-03-16 |
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