EP2638437A1 - Antichoc magnétique ou/et électrostatique - Google Patents
Antichoc magnétique ou/et électrostatiqueInfo
- Publication number
- EP2638437A1 EP2638437A1 EP11769865.4A EP11769865A EP2638437A1 EP 2638437 A1 EP2638437 A1 EP 2638437A1 EP 11769865 A EP11769865 A EP 11769865A EP 2638437 A1 EP2638437 A1 EP 2638437A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- component
- mass
- polar
- magnetic
- shock
- 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
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- 230000035939 shock Effects 0.000 title claims abstract description 45
- 239000006096 absorbing agent Substances 0.000 title abstract description 4
- 230000000703 anti-shock Effects 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 37
- 238000013016 damping Methods 0.000 claims description 28
- 239000004575 stone Substances 0.000 claims description 24
- 239000004020 conductor Substances 0.000 claims description 19
- 239000000696 magnetic material Substances 0.000 claims description 16
- 230000005686 electrostatic field Effects 0.000 claims description 12
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- 238000012423 maintenance Methods 0.000 claims description 3
- 210000004508 polar body Anatomy 0.000 abstract 3
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- 229910001369 Brass Inorganic materials 0.000 description 2
- 241000308356 Tesia Species 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910052790 beryllium Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
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- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
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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
- G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
- G04B31/02—Shock-damping bearings
-
- 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
- G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
-
- 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
- G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
- G04B31/004—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor characterised by the material used
Definitions
- the invention relates to an anti-shock device for the protection of a watch component made of a material that is at least partially magnetically permeable or at least partially magnetic, and / or of at least partially conductive material or at least partially electrified material, said pivotally mounted component. in a chamber between a first end and a second end that comprises said component.
- the invention also relates to such an anti-shock device for the protection of a watch component made of at least partially magnetically or at least partially magnetic permeable material at a first end and at a second end.
- the invention also relates to such an anti-shock device for the protection of a watch component made of at least partially conductive material or at least partially electrified at a first end and at a second end.
- the invention also relates to a magnetic and / or electrostatic pivot comprising a watch component, made of material at least partially magnetically permeable or at least partially magnetic at a first end and a second end, or respectively at least partially conductive or at least partially electrified. at a first end and a second end.
- the invention also relates to a watch movement comprising at least one such shockproof device, and / or at least one such magnetic pivot and / or electrostatic.
- the invention also relates to a timepiece comprising at least one such watch movement, and / or at least one such shockproof device, and / or at least one such magnetic pivot and / or electrostatic.
- the invention relates to the field of micro-mechanics and in particular watchmaking, to which it is particularly well suited. Background of the invention
- the watchmaking technique uses traditional solutions to guarantee the anti-shock functions of watch components, such as a pendulum. These solutions are based on the elastic and viscoelastic response of parts having anti-shock function and on the mechanical friction between the shock and the component to be protected.
- Traditional shockproofing is characterized in particular by a threshold acceleration below which the shockproof is not deformed and by a function of radial refocusing of the component after the impact which is relatively imprecise.
- a DE 12 1 1 460 B in the name of SIEMENS AG is known, which describes a mobile constituted by a rod integral with an inner tubular magnet inserted into an outer tubular magnet.
- the latter is movable, in a cartridge coaxial with the two magnets, against a bearing face abutting at one end, and against a spring held by a plug at the other end.
- This mobile is still guided axially on a pin secured to this plug.
- this mobile comprises a protective sleeve of the fragile ceramic core constituted by the inner magnet.
- the pivoting guide means are constituted by the cooperation of the two tubular magnets, inside and outside.
- the maintenance of the mobile on the first polar mass does not correspond to a support, since there is solidarity between this mobile and the inner tubular magnet, via a flange and one of these two sockets .
- the mobile of this patent is not free with respect to the first polar mass constituted by the inner magnet, but only with respect to the second polar mass constituted by the external magnet.
- the invention proposes, to overcome the limitations of the prior art, a protection configuration of a component, and in particular a watch component, pivotally mounted between holding means with or without contact.
- the essential characteristic is the mobility of these holding means, whose normal operating position is a stable equilibrium position, these holding means are movable, with respect to a structure, under the effect of a strong acceleration created by shock, to preserve the integrity of the component and its environment.
- the invention relates to an anti-shock device for the protection of a watch component made of a material at least partially magnetically permeable or at least partially magnetic, and / or of at least partially conductive material or at least partially electrified material, component mounted pivotally in a chamber between a first end and a second end that comprises said component, characterized in that said shockproof device comprises, on either side of said first and second ends, on the one hand means of attraction said first end for maintaining said first end bearing on a first polar mass, and secondly, in the vicinity of a second polar mass, means for attracting said second end towards said second polar mass, and in that said means for attracting said first end on the one hand, and said means also attracting said second end, are movable along an axial direction between abutments, and further characterized in that said first polar mass and said second polar mass are distinct from said component, and are each located at the periphery or near said chamber, and are each made of at least partially magnetic material or at least partially magnetically perme
- this shockproof device comprises means for damping the movement of at least one or each of said polar masses, and / or elastic return means of at least one or each of said polar masses, said damping means and / or said elastic return means being arranged to absorb the energy communicated to said polar masses during the a shock, and to bring back after said shock of at least one or each of said polar masses in a position of stable equilibrium that it previously occupied said shock.
- Proper positioning and centering are established by magnetic or electrostatic forces, not by elastic restoring forces.
- an anti-shock system for a watch component, for example a balance shaft, based on the magnetic interaction. It is possible, for typical watch dimensions and using commercial micro-magnets, to generate magnetic forces greater than the force of gravity and the torque acting on the component during operation. A system governed by magnetic forces is supposed to be able to regain exactly its position of magnetic equilibrium after a shock.
- the invention thus also relates to such an anti-shock device for protecting a watch component made of a material that is at least partially magnetically or at least partially magnetic permeable at a first end and a second end, characterized in that it comprises, on the one hand, and other of said first and second ends, at an upper gap distance, of the value of a determined functional clearance, at the spacing between said first end and said second end, a first surface of a first polar mass and a second surface of a second polar mass, which polar masses are arranged to either be attracted each by a magnetic field emitted by one of said first end or second end of said component, or each to generate a magnetic field attracting one of said first end or second end of said component, said magnetic fields being of different intensity at said first end and said second end, so that the magnetic attraction forces acting on said component at both ends are of different intensity, so as to attract said component by one of its two said ends, in direct or indirect contact on only one of said surfaces of said polar masses, and in that said first polar mass and
- the invention also relates to such an anti-shock device for protecting a watch component made of at least partially conductive material or at least partially electrified at a first end and at a second end, characterized in that it comprises, on both sides, other of said first and second ends, at a greater gap distance, the value of a functional clearance determined at the spacing between said first end and said second end, a first surface of a first polar mass and a second a surface of a second polar mass, which polar masses are arranged to either be each attracted by an electrostatic field emitted by one of said first end or second end of said component, or to each generate an electrostatic field attracting one of said first end or second end of said component, said electrostatic fields being of different intensity at said first end and said second end, so that the electrostatic attraction forces acting on said component at both ends are of different intensity, so as to attract said component by one of its two said ends, in direct or indirect contact on only one of said surfaces of said polar masses, and in that said first polar mass and said second polar
- the invention also relates to a magnetic and / or electrostatic pivot comprising a watch component, made of material at least partially magnetically permeable or at least partially magnetic at a first end and a second end, or respectively at least partially conductive or at least partially electrified. at a first end and at a second end, comprising such an anti-shock device.
- the invention also relates to a watch movement comprising at least one such shockproof device, and / or at least one such magnetic pivot and / or electrostatic.
- the invention also relates to a timepiece comprising at least one such watch movement, and / or at least one such shockproof device, and / or at least one such magnetic pivot and / or electrostatic.
- FIG. 1 shows, schematically, and in longitudinal section along a pivot axis, a first mode of a device according to the invention, applied to the protection of a timepiece component;
- FIG. 2 shows schematically and in perspective, a timepiece comprising a movement incorporating a device according to the invention
- FIG. 3 shows schematically the operating principle of a device according to another embodiment of the invention.
- FIG. 4 shows, schematically, and in longitudinal section along a pivot axis, an alternative embodiment according to the first embodiment of a device according to the invention, provided with a damping device;
- FIG. 5 is a diagrammatic partial view in perspective of an element of the damper of FIG. 4.
- the invention relates to an anti-shock device 10 for the protection of a watchmaking component 1, also called mobile, pivotally mounted between a first end 2 and a second end 3.
- This shockproof device 10 comprises, on either side of these first 2 and second 3 ends, on the one hand pivoting guide means or attraction means of the first end 2 held in abutment on a first polar mass 4 separate from the component 1, and secondly, in the vicinity of a second polar mass 6 distinct from the component 1, means for pivotally guiding the second end 3 or means of attraction of the second end 3 towards the second polar mass 6.
- the component 1 is, at least in the vicinity of its first end 2 and its second end 3, preferably made of a magnetically permeable material and / or conductor. In a particular embodiment of the invention, this material is, again, magnetized and / or electrified.
- the component 1 is movable in a chamber 1A.
- polar mass means a mass which, at least in the vicinity of the chamber 1A, is made of a magnetically permeable material and / or conductor, or, in a particular embodiment and preferred of the invention, in a magnetized material and / or electrified.
- This polar mass 4 or 6 is not part of the component 1, and is thus located on the periphery or near the chamber 1A:
- the polar mass is separated from the chamber 1 A by a spacer which has a bearing surface or abutment for the component 1.
- a first polar mass 4 is thus separated from the component 1 by a spacer 18, which comprises such a first bearing surface 5
- a second polar mass 6 is separated from the component 1 by a spacer 19 which comprises a such a second abutment surface 7.
- the polar masses although without direct contact with the component 1, interact with it in, as the case, magnetic or / and electrostatic attraction or repulsion: or an axial end in the axial direction D of the component 1 is magnetized or electrified, and cooperates with the nearest polar mass, which is magnetically permeable or conductive under the action of a magnetic or electrostatic force, or it is the opposite, an axial end in the axial direction D of the component 1 is magnetically permeable or conductive, and cooperates with the nearest polar mass, which is magnetized or electrified;
- such a polar mass may comprise a surface constituting one of the lateral surfaces of the chamber 1A, in the vicinity of which, or in contact with which is likely to come, the first 2 or second 3 end of component 1.
- this surface of the polar mass is located in the extension of this axis D.
- the magnetic interaction and / or electrostatic is as in the case previous, but without the spacers: the component 1 is then in direct contact with one of the polar masses;
- the first polar mass 4 and the second polar mass 6 are distinct from the component 1, and are each situated at the periphery or near the chamber 1A, and are each made of at least partially magnetic material or at least partially magnetically permeable material, or and at least partially electrified or at least partially conductive material.
- the component 1 is freely mounted in the chamber 1A between the polar masses 4 and 6 and so as to bear on a bearing surface near one of these polar masses 4, 6.
- the pivoting guide means or the means of attraction of the first end 2 on the one hand, and the pivoting guide means or the means of attraction of the second end 3 on the other hand are movable along an axial direction D between stops.
- this shockproof device 10 comprises, on either side of the first 2 and second 3 ends, on the one hand means of attraction of the first end 2 for the maintenance of this first end. 2 resting on a first polar mass 4, and secondly, in the vicinity of a second polar mass 6, means for attracting this second end 3 towards the second polar mass 6, and the means for attracting the first end 2 on the one hand, and the attraction means of said second end 3 on the other hand, are movable along an axial direction D between stops.
- This axial direction D is illustrated in the figures in a particular case where it is linear. It can also be curvilinear. But the direction of mobility must coincide with the direction of the flow of the magnetic or electrostatic field.
- this shockproof device 10 preferably comprises means for damping the movement of at least one or each of the polar masses 4, 6 and / or elastic return means of at least one or each of the masses.
- damping means or / and these elastic return means are arranged to absorb the energy imparted to the polar masses 4, 6 during an impact, and to bring back more easily after this same shock at least one of the polar masses 4, 6. or each of the polar masses 4, 6 in a position of stable equilibrium that it occupied prior to this shock. Good repositioning in the stable position is guaranteed by magnetic or electrostatic forces.
- the anti-shock device 10 is arranged so that at least the first mass 4 or the second mass 6 comprises guide means 14, 16 arranged to cooperate, under a strong acceleration printed on the component 1 during an impact, sliding along the axial direction D, with fixed complementary guide means 15, 17 that comprise structural elements 12, 13, of the device 10.
- the first mass 4 and the second mass 6 respectively comprise these guide means 14, 16.
- the anti-shock device 10 comprises such damping means, which are of the viscous friction type.
- the anti-shock device 10 comprises such damping means, which comprise a compressible fluid between the polar mass 4, 6 concerned and a stop 42, 44 which limits its stroke away from the component 1.
- the first pole mass 4 and the second pole mass 6 are each movable in a chamber between two stops, respectively 41 and 42, 43 and 44.
- the anti-shock device 10 comprises means for damping the movement of each of the polar masses 4, 6 in their respective chamber.
- the shockproof device 10 comprises such damping means, comprising a deformable shape memory damper 23, 24 arranged to dissipate the kinetic energy of an impact, and to slowly return to its original shape after a shock.
- this shape memory deformable damper 23, 24 is neoprene.
- the shockproof device 10 may comprise both damping means, and elastic return means, which are differentiated by their time constant, the return to the stable equilibrium position. being slower with the damping means than with the elastic return means.
- the shockproof device 10 may comprise one or more damping means consisting of a magnetic memory-shape material, in addition to or in substitution of magnetic polar masses; in this case a single component guarantees both the damping function and the generation of magnetic forces.
- it may comprise compressible magnetic fluids or magnetic foams in addition to or in substitution for the magnetic polar masses, to guarantee both the damping function and the generation or channeling of the magnetic flux.
- the axial direction D is linear.
- the component 1 is made of at least partially magnetically or at least partially magnetic permeable material at a first end 2 and at a second end 3.
- the anti-shock device 10 then comprises, on either side of the first 2 and second 3 ends, at an upper gap distance, the value of a determined functional clearance J, at the center distance between the first end 2 and the second end 3, a first surface 5 of a first polar mass 4 and a second surface 7 of a second polar mass 6.
- polar masses 4, 6 are arranged to be either attracted each by a magnetic field emitted by one of the first end 2 or second end 3 of the component 1, or each to generate a magnetic field attracting a first end 2 or second end 3 of component 1, these magnetic fields being of different intensity at the first end 2 and the second end 3, so that the magnetic attraction forces acting on the component 1 at both ends 2, 3 are of different intensity, so as to attract the component 1 by one of its two ends 2, 3, in direct or indirect contact on only one of the surfaces 5, 7 of the polar masses 4, 6.
- the fluid or the foam may also be non-magnetic.
- a deformable memory damper can also be non-magnetic.
- the first polar mass 4 and the second polar mass 6 are each magnetic material, or magnetically permeable, and are magnetic if the component 1 is not.
- the first polar mass 4 and the second polar mass 6, preferably together define an axial direction D, on which is aligned a longitudinal axis of the component 1 joining the first end 2 and second end 3 of the latter, when the component 1 is inserted between the first polar mass 4 and the second polar mass 6
- the device is calculated so that the gap distance between the first surface 5 and the second surface 7 is dimensioned so as to ensure the determined functional clearance J over the entire operating temperature range of the shockproof device 10 and the component 1.
- FIG. 3 The principle of such a magnetic shockproof construction for a component 1, which is shown in a preferred but nonlimiting application in the form of a balance shaft, is shown in FIG. 3.
- the axis of component 1 which is made of a magnetically permeable material, typically a soft ferromagnetic material, or a magnetic material, is placed between two polar masses 4 and 6.
- This axis may also consist of two half-axes of such a material, each at one end 2, 3, of component 1.
- These polar masses 4 and 6 are magnetized if the component 1 is not, they can be permeable magnetically or magnetized when the component 1 is magnetized.
- These polar masses 4, 6 may in particular be made of micro-magnets, whose polarities are in agreement, and which define the pivoting of the axis of the component 1.
- the support of this axis is guaranteed, either by two stones interposed between the axis and the polar masses or magnets, or by a hardening treatment of the surface of the polar masses or magnets.
- the two polar masses 4 and 6 are, according to the invention, each movable in a chamber limited by stops, respectively 41, 42 on the one hand, and 43, 44 on the other hand. Their movement is made according to an axial play, respectively hi and h 2 .
- the minimum distance between the polar masses 4 and 6 is fixed by the stops 41 and 43 closest to the component, while the maximum distance is fixed by stops 42, 44, the farthest from component 1, here constituted by the bottom of the caves.
- the two polar masses 4 and 6, and the component 1 are arranged in such a way that the magnetic forces and moments acting on the component are attractive forces, tending to attract the component 1 towards contact surfaces 5 and 7 that comprise either the polar masses 4 and 6, or spacers 18, 19, interposed between these polar masses and the component 1.
- the mobility of the polar masses 4 and 6 is preferably impeded by damping means, or else elastic return means.
- the damping means which are preferred, may take different forms: in the case of FIG. 1, viscous friction means of the polar masses 4 and 6 in chambers in which they are mobile, this viscous friction being able to be completed by the presence a compressible fluid between the polar masses 4, 6, and their stops 42, 44, the farthest from the component 1.
- the damping means comprise dampers 23, 24, arranged to absorb a shock by permitting axial mobility, along the z direction of FIG. 1, or the axial pivoting direction D of Figure 3, one or the other polar mass 4 or 6, and to bring them slowly back to their position prior to impact. Therefore, elastic return means, such as springs, are also possible, however their stiffness must be calculated in order to avoid too stiff a return, and a reverse impact effect on the component 1, which is not desired .
- these dampers 23 and 24 are made of neoprene, or of silicone, or comprise at least one neoprene part, or silicone, because of the slow return characteristics in the shape of these shape memory materials.
- Such dampers placed on the internal walls of guide chambers of the polar masses 4 and 6 and inside the stops, are thus used to dissipate the kinetic energy of the shock and to prevent the polar masses or magnets from colliding with the walls or their rear stops 42, 44 during the impact, or with the stops 41, 43, the closest to the component 1, after the impact.
- the dampers may also be constructed so as to constitute themselves the extreme stops, as in the case of Figure 3 where they are fixed to the ends of complementary guide means 15 and 17, here bores, cooperating with guide means 14 and 16 that comprise here in the form of cylindrical surfaces, the polar masses 4 and 6.
- dampers are however not necessary, if the axial play and the energy of the magnets are sufficiently large, and if the magnets are subjected to a viscous friction inside the encave which guarantees the dissipation of the 'energy.
- the size and energy of the magnets used, either in the polar masses 4 and 6, or in the component 1, or in the polar masses 4 and 6 and the component 1, as well as the profile of the axis of the component 1 are optimized to produce a net magnetic attraction force towards one of the two polar masses.
- polar masses 4 and 6 are magnetic, they will also be called “magnets”.
- the value of the magnetic force is proportional to the magnetization M axis (r, z) and to the magnetic field gradient H produced by the two magnets: m - VH
- the integration is done on the volume of the axis V axis .
- the axis therefore bears on the same magnet.
- FIG. 1 thus illustrates an embodiment of an axially symmetrical magnetic balance wheel: the balance shaft 1, made of soft magnetizable or magnetic material, is located between two permanent magnets 4 and 6 whose magnetic polarization is directed in the same direction corresponding to the direction z of Figure 3, here under the axial direction reference D corresponding to a pivot axis of the component 1.
- the support of the balance shaft can be guaranteed or by two stones 1 8, 19, interposed between the magnets and the balance shaft, or by a surface treatment of the magnets.
- the magnets have an axial clearance h and h 2 respectively, determined by the stops 41, 42 and 43, 44.
- the axial clearance allows the dissipation of the energy of the shock through the movement of the magnets.
- the radial dampers 32 and 33 have the function of preventing the axis from emerging from the region of magnetic influence, and have no contact with the component 1 during normal operation thereof. This property is valid for all positions of the watch, so also in a vertical position.
- the net force of attraction between the axis 1 and the magnet 4 is greater than the force of gravity and the maximum force applied, by the mechanical device with which it cooperates, on the component 1, as visible on the Figure 3;
- the magnetic attraction force between the two magnets 4 and 6 is sufficiently large to always bring the magnets into the position of minimum distance after the shock, that is to say the two magnets in contact with the stops.
- the axis is maintained in the region of influence of the magnetic field by the shockproofing 32 and 33: after the shock, the refocusing is guaranteed by the magnetic interaction that brings the axis exactly in the center of the magnets by aligning it perfectly in the z direction.
- the kinetic energy of the shock is dissipated by the friction of the magnet against the side walls of the encave and / or the damper placed on the stop 44. After the shock, the magnetic attraction takes the magnet 4 and the axis 1 in their equilibrium position.
- the friction and / or the damper inside the abutment have the function of preventing an excessive energy collision of the magnet 4 against the abutment, a collision which could involve the loss of contact with the axis of the magnet 4 and an energy shock of the axis against the magnet 4.
- the axis 1 loses contact with the polar mass 4 but it quickly comes into contact with the polar mass 6.
- the energy of the shock is dissipated by the movement of the magnet 6, thanks to the friction and / or the damper 24 or in the mobility chamber of the polar mass 6.
- the magnet 6 After the shock, the magnet 6, always in contact with the axis, is brought against the stop. In this condition, the axis is subjected to a force of net attraction to the magnet 4, and thus it is brought into contact with it. Since the dissipative mechanisms act on the movement of the magnets and not on the axis, the dissipation due to the friction of the pivot of the balance is almost zero during normal operation. The quality factor of the regulator is thus independent of the shockproof function and can be much higher than for a traditional mechanical system.
- the axis of the component may itself be a permanent magnet, thus maximizing magnetic forces and torques.
- the system can be integrated with other magnetic elements.
- it advantageously comprises shielding means 20 visible in FIG.
- the determined functional game J is strictly positive.
- the functional clearance J determined is greater than or equal to 0.020 mm.
- the choice of the magnetic permeability of the material of the component 1, and the determination of the magnetization, as the case may be, of the first mass 4 and the second mass 6 on the one hand, and / or the component 1 on the other hand , are preferably made so that the magnetic fields attracting the first end 2 and second end 3 each exert on the component 1 attraction forces greater than ten times the force of attraction of gravity on the component 1.
- the magnetic field density in the vicinity of the first surface 5 and the second surface 7 is greater than or equal to 100,000 A / m.
- the shockproof device 10 also advantageously comprises shielding means arranged to prohibit the action of any component magnetic field. radial with respect to the axial direction D, in the vicinity of the first 5 and second 7 contact surfaces.
- these shielding means 20 comprise at least one tubular part 21, 22 oriented in the axial direction D and surrounding the first mass 4 and the second mass 6, and at least the second end 3 of the component 1.
- At least the first surface 5 comprises a hard coating or is constituted by a hard surface of a spacer 18 interposed between the first mass 4 and the component 1.
- a spacer 19 can be interposed between the second mass 6 and the component 1.
- the anti-shock device 10 comprises magnetic field looping means between the first mass 4 and the second mass 6.
- the attraction between the polar masses 4, 6, and the component 1 is of electrostatic nature.
- the notion of relative permittivity or dielectric constant is then substituted for the notion of magnetic permeability, and the notion of electrostatic field is substituted for that of magnetic field.
- the construction of the anti-shock device 10 is entirely similar, and is sized according to the permanent electrostatic fields established between the component 1 and the polar masses 4 and 6.
- the anti-shock device 10 relates to the protection of a watch component 1 made of at least partially conductive material or at least partially electrified material at a first end 2 and a second end 3.
- this shockproof device 10 comprises , on either side of said first 2 and second 3 ends, at an upper gap distance, the value of a determined functional clearance J, at the distance between the first end 2 and the second end 3, a first surface 5 of a first polar mass 4 and a second surface 7 of a second polar mass 6, which polar masses 4; 6 are arranged to either be each attracted by an electrostatic field emitted by one of the first end 2 or second end 3 of the component 1, or to each generate an electrostatic field attracting one of the first end 2 or second end 3 of the component 1 , these electrostatic fields being of different intensity at the first end 2 and the second end end 3, so that the electrostatic attraction forces acting on the component 1 at its two ends 2, 3 are of different intensity, so as to attract the component 1 by one of its two ends, in contact direct
- this conductive material is polarized by induction in contact or at a distance thanks to the parts which are permanently charged.
- a similar variant is obtained with the use of a dielectric, insulator or semiconductor, in place of a conductor, the polarization is then limited to the surface of the dielectric, and the force and the attraction torque are lower. those developed when the material is conductive, but still allow this use in the case of a watch.
- Figures 4 and 5 illustrate an advantageous embodiment, comprising a damping assembly, because of its high compactness, and its overall low thickness.
- the bearing surface 18A is a polished concave spherical sector made of a stone 18. It is plated on a permanent magnet 4, which develops a remanent magnetic field close to 1 Tesla or greater than 1 Tesla on its surface. In contrast to the stone 18 with respect to the magnet 4 is disposed a support stone 43 having a polished convex profile.
- the stone 18, the magnet 4 and the support stone 43 are inserted together in a kitten 40, made for example of a non-magnetic material such as brass or titanium, or made of cupro-beryllium.
- the stone 19 and the support stone 46 are mounted in the kitten 40 with a clamping or gluing, or a holding means, guaranteeing a holding greater than 1 N.
- This kitten 40 slides freely in a block 41, which has an opening 34 for the passage of the first end 2 of the component 1, here constituted by a set sprung balance.
- This block 41 comprises, in the vicinity of this opening 34, a radial shock absorber or a radial damper 32, constituted in particular by a range of revolution about the axis D.
- the assembly is assembled so that the first end 2 of the component 1 is mobile in support in the convex bowl 18A, and that the support stone 43 has its convex sector at the other end.
- This outer block 41 acts as a stop during shocks on the component 1.
- the first end 2 of the component or the rocker 1 has a curvature, which is less than that of the concave cap of the stone 18, to ensure contact on a single bridge.
- the concave curvature 18A of the stone 18 makes it possible to reduce the gap distance between the polar mass 6 and the first end 2 of the component 1, and also constitutes a reservoir for the oil.
- the bearing surface 19A is a polished concave spherical sector made of a stone 19. It is plated on a permanent magnet 6, which develops a remanent magnetic field close to 1 Tesia or greater than 1 Tesia on its surface.
- a bearing stone 46 having a polished convex profile.
- the stone 19, the magnet 6 and the support stone 46 are inserted together in a kitten 44, made for example of a non-magnetic material such as brass or titanium, or made of cupro-beryllium. This kitten 44 slides freely in a block 45, which has an opening 35 for the passage of the second end 3 of the component 1.
- This block 45 comprises, in the vicinity of this opening 35, a radial shock absorber or a radial damper 33, constituted in particular by a range of revolution about the axis D.
- the assembly is assembled so that the second end 3 of the component 1 is mobile in support in the convex bowl 19A, without contact during operation in the absence of shocks, and that the bearing stone 46 has its convex sector at the other end.
- Figure 4 illustrates this end assembly on the side of the second end 3, which is damped by a damper constituted by a resilient arm 50 fall arrest. This elastic arm 50, as visible in FIG.
- Such an elastic arm fall arrestor is preferably mounted with a preload of the order of 0.5 N. This prestressing can be chosen zero if it is required that the shock occurs regardless of the energy of the shock, without threshold activation.
- the magnets 4 and 6 are preferably Nd-Fe-B permanent magnets, for example of the "Vacodym®” type of "Vacuumschmelze GmbH".
- the magnetization or the electrostatic charge of each polar mass is spatially variable and is dimensioned so as to optimize the standard and / or the direction of the magnetic or electrostatic forces applied to the component 1.
- the invention also relates to a magnetic pivot 100 and / or electrostatic comprising a watch component 1, made of material at least partially magnetically permeable or at least partially magnetic, at a first end 2 and a second end 3, respectively at least partially conductor or at least partially electrified at a first end 2 and at a second end 3, and comprising such an anti-shock device 10.
- this magnetic pivot 100 and / or electrostatic comprises access means for the insertion of the component 1 in the air gap, or is made dismountable in several parts comprising means of cooperation between them or / and with a bridge 31 and / or a plate 30 to allow mounting of the component 1 supported by its first end 2 on a first portion having the first surface 5 and the first mass 4, prior to mounting a second portion having the second surface 7 and the second mass 6.
- a magnetic pivot 100 and / or electrostatic as shown in Figure 1 comprises a component 1 which has a tapered portion, of revolution about the axial direction D which is linear, and degressive section from the center of gravity of the component 1 to the second end 3, so as to improve the magnetic field gradient in the vicinity of the second surface 7, and to facilitate the centering of the second end 3 on the axial direction D.
- the magnetic pivot 100 and / or electrostatic advantageously comprises a component 1 which is dynamically balanced, for its maximum rotational speed, around a longitudinal axis joining the first end 2 and the second end 3.
- the first end 2 of the component 1 is arranged with a point contact surface with the first surface 5, the point contact surface being locally spherical or conical.
- the first surface 5 comprises a receiving surface arranged to cooperate with the first end 2, the receiving surface being hollow and locally spherical or conical.
- the component 1 is a rocker whose pivot axis coincides with the axial direction D.
- a component 1 comprising a substantially tree-shaped part of magnetically permeable material, or a conductor respectively, and the first mass 4 and the second mass 6 are each made of magnetic material, or respectively of at least partially electrified material;
- component 1 comprising a substantially tree-shaped portion made of magnetic material, or respectively of at least partially electrified material, and the first mass 4 and the second mass 6 are each made of magnetically permeable or respectively conductive material;
- - It comprises a component 1 having a substantially tree-shaped portion of magnetic material, or respectively at least partially electrified material, and the first mass 4 and the second mass 6 are each magnetic material, or respectively at least partially electrified material.
- the invention also relates to a watch movement 1000 comprising at least one such anti-shock device 10, and / or at least one such pivot 100 magnetic and / or electrostatic.
- the invention also relates to a timepiece comprising at least one such watch movement 1000, and / or at least one such shockproof device 10, and / or at least one such pivot 100 magnetic and / or electrostatic.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Vibration Prevention Devices (AREA)
- Micromachines (AREA)
- Electric Clocks (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11769865.4A EP2638437B1 (fr) | 2010-11-09 | 2011-10-12 | Antichoc magnétique ou/et électrostatique |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10190511.5A EP2450759B1 (fr) | 2010-11-09 | 2010-11-09 | Antichoc magnétique |
EP11769865.4A EP2638437B1 (fr) | 2010-11-09 | 2011-10-12 | Antichoc magnétique ou/et électrostatique |
PCT/EP2011/067817 WO2012062523A1 (fr) | 2010-11-09 | 2011-10-12 | Antichoc magnétique ou/et électrostatique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2638437A1 true EP2638437A1 (fr) | 2013-09-18 |
EP2638437B1 EP2638437B1 (fr) | 2015-08-26 |
Family
ID=43902251
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10190511.5A Active EP2450759B1 (fr) | 2010-09-11 | 2010-11-09 | Antichoc magnétique |
EP11769865.4A Active EP2638437B1 (fr) | 2010-11-09 | 2011-10-12 | Antichoc magnétique ou/et électrostatique |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10190511.5A Active EP2450759B1 (fr) | 2010-09-11 | 2010-11-09 | Antichoc magnétique |
Country Status (8)
Country | Link |
---|---|
US (1) | US8579501B2 (fr) |
EP (2) | EP2450759B1 (fr) |
JP (1) | JP5351240B2 (fr) |
CN (1) | CN102566394B (fr) |
CH (1) | CH704062A2 (fr) |
HK (1) | HK1173237A1 (fr) |
RU (1) | RU2565323C2 (fr) |
WO (1) | WO2012062523A1 (fr) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH703475B1 (fr) * | 2010-07-30 | 2015-06-30 | Swatch Group Res & Dev Ltd | Procédé de réalisation d'une transmission sans contact dans un mouvement d'horlogerie. |
EP2469357B2 (fr) * | 2010-12-21 | 2016-06-29 | The Swatch Group Research and Development Ltd. | Palier amortisseur de chocs pour un mobile tournant d'un mouvement d'horlogerie |
CH707582B1 (fr) * | 2013-02-04 | 2018-12-14 | Montres Breguet Sa | Sous-ensemble horloger à pivotement magnétique ou électrostatique. |
EP2799937B1 (fr) * | 2013-05-01 | 2020-09-16 | Rolex Sa | Corps d'amortisseur d'un balancier d'un oscillateur d'horlogerie |
CH709005A2 (fr) * | 2013-12-19 | 2015-06-30 | Montres Breguet Sa | Dispositif de centrage magnétique. |
CH710817B1 (fr) * | 2015-03-04 | 2019-07-15 | Hublot Sa Geneve | Mouvement horloger à régulateur résonant à interaction magnétique. |
EP3081997A1 (fr) | 2015-04-16 | 2016-10-19 | Montres Breguet S.A. | Antichoc magnétique pour arbre d'horlogerie |
CH711220A2 (fr) * | 2015-06-16 | 2016-12-30 | Montres Breguet Sa | Dispositif magnétique de pivotement d'un arbre dans un mouvement horloger. |
EP3106934A1 (fr) * | 2015-06-16 | 2016-12-21 | Montres Breguet S.A. | Dispositif magnétique de pivotement d'un arbre dans un mouvement horloger |
JP2017058248A (ja) * | 2015-09-16 | 2017-03-23 | セイコーインスツル株式会社 | 押え部材、耐振軸受、ムーブメントおよび時計 |
EP3176650B1 (fr) * | 2015-12-02 | 2019-02-06 | Nivarox-FAR S.A. | Protection d'un composant d'horlogerie en materiau micro-usinable |
EP3246764B1 (fr) * | 2016-05-18 | 2019-01-23 | Montres Breguet S.A. | Dispositif antichoc pour un mouvement horloger |
EP3273304B1 (fr) * | 2016-07-19 | 2021-11-10 | Nivarox-FAR S.A. | Pièce pour mouvement d'horlogerie |
EP3273303A1 (fr) * | 2016-07-19 | 2018-01-24 | Nivarox-FAR S.A. | Pièce pour mouvement d'horlogerie |
CH712726A2 (fr) * | 2016-07-21 | 2018-01-31 | Montres Breguet Sa | Oscillateur balancier-spiral d'horlogerie à pivot magnétique. |
EP3543801A1 (fr) | 2018-03-21 | 2019-09-25 | Montres Breguet S.A. | Mécanisme de sonnerie d'horlogerie |
CH716041A1 (fr) * | 2019-04-04 | 2020-10-15 | Csem Ct Suisse Delectronique Microtechnique Sa Rech Developpement | Dispositif antichoc et oscillateur mécanique horloger à guidage flexible disposant d'un tel dispositif antichoc. |
Family Cites Families (19)
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FR909133A (fr) * | 1944-09-29 | 1946-04-30 | Cfcmug | Perfectionnements aux compteurs d'électricité |
BE528187A (fr) * | 1953-04-22 | 1900-01-01 | ||
CH351472A (de) * | 1957-06-25 | 1961-01-15 | Landis & Gyr Ag | Vorrichtung zur magnetischen Lagerung und Zentrierung eines drehbeweglichen Systems |
DE1220224B (de) * | 1958-07-25 | 1966-06-30 | Kern & Co Ag | Magnetisch, praktisch reibungslos gelagerte, bezueglich Drehung um ihre Laengsachsein indifferentem Gleichgewicht befindliche, horizontale oder annaehernd horizontale Systemachse |
FR1314364A (fr) * | 1960-06-15 | 1963-01-11 | Nouvelle combinaison d'aimants pour suspension d'axe conjointement avec l'entretien d'un mouvement d'horlogerie électrique | |
DE1211460B (de) * | 1962-07-21 | 1966-02-24 | Siemens Ag | Magnetisch tragendes Lager fuer stehende Wellen, insbesondere fuer die Laeuferwelle eines Elektrizitaetszaehlers |
FR1339728A (fr) * | 1962-10-18 | 1963-10-11 | Siemens Ag | Palier, surtout palier inférieur pour compteurs électriques avec dispositif magnétique de maintien du rotor de comptage |
JPS4019911Y1 (fr) * | 1964-06-19 | 1965-07-12 | ||
DE1815099A1 (de) * | 1968-12-17 | 1970-09-24 | Mauthe Gmbh Friedr | Oszillator als Gangordner von insbesondere elektrischen Uhren |
IT942651B (it) * | 1971-09-30 | 1973-04-02 | Elettrorava Spa | Cuscinetto magnetico radiale |
JPS54130445U (fr) * | 1978-03-03 | 1979-09-10 | ||
US4308605A (en) * | 1980-02-12 | 1981-12-29 | Ayer Henry E | Balance wheel assembly |
JPS60167814U (ja) * | 1984-04-16 | 1985-11-07 | 河口湖精密株式会社 | 回転軸の支持構造 |
SE9701959D0 (sv) * | 1997-05-26 | 1997-05-26 | Global Hemostasis Inst Mgr Ab | Bearing device |
DE19854063A1 (de) * | 1998-11-24 | 2000-10-19 | Vladimir Jagmann | Mechanische Anordnung |
JP2002029330A (ja) * | 2000-07-18 | 2002-01-29 | Nok Vibracoustic Kk | 吸音構造体 |
GB0018996D0 (en) * | 2000-08-03 | 2000-09-20 | New Transducers Ltd | Bending wave loudspeaker |
US20030169888A1 (en) * | 2002-03-08 | 2003-09-11 | Nikolas Subotic | Frequency dependent acoustic beam forming and nulling |
CN2770039Y (zh) * | 2005-02-01 | 2006-04-05 | 广州新静界消音材料有限公司 | 吸声板构件 |
-
2010
- 2010-11-09 CH CH01873/10A patent/CH704062A2/fr not_active Application Discontinuation
- 2010-11-09 EP EP10190511.5A patent/EP2450759B1/fr active Active
-
2011
- 2011-10-12 WO PCT/EP2011/067817 patent/WO2012062523A1/fr active Application Filing
- 2011-10-12 EP EP11769865.4A patent/EP2638437B1/fr active Active
- 2011-11-07 US US13/290,606 patent/US8579501B2/en active Active
- 2011-11-08 RU RU2011145346/28A patent/RU2565323C2/ru not_active IP Right Cessation
- 2011-11-09 JP JP2011245493A patent/JP5351240B2/ja active Active
- 2011-11-09 CN CN201110353574.3A patent/CN102566394B/zh active Active
-
2013
- 2013-01-10 HK HK13100387.6A patent/HK1173237A1/xx unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2012062523A1 * |
Also Published As
Publication number | Publication date |
---|---|
CH704062A2 (fr) | 2012-05-15 |
EP2638437B1 (fr) | 2015-08-26 |
EP2450759B1 (fr) | 2020-08-12 |
HK1173237A1 (en) | 2013-05-10 |
RU2565323C2 (ru) | 2015-10-20 |
US20120113767A1 (en) | 2012-05-10 |
JP2012103250A (ja) | 2012-05-31 |
US8579501B2 (en) | 2013-11-12 |
RU2011145346A (ru) | 2013-05-20 |
CN102566394B (zh) | 2014-12-10 |
JP5351240B2 (ja) | 2013-11-27 |
EP2450759A1 (fr) | 2012-05-09 |
CN102566394A (zh) | 2012-07-11 |
WO2012062523A1 (fr) | 2012-05-18 |
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