• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a magnetic cylinder escapement mechanism comprising a regulating wheel (5) cooperating with an escape wheel (3) comprising actuators (6) at the periphery of a first disk (30), each having a first impulse portion (61), and a second stop portion (62), generating or guiding magnetic fields parallel to the pivot axes, and arranged to cooperate in attraction, through said first disk (30), with a second non-magnetized ferromagnetic soft disc (7) integral with said movable regulator (5), said mechanism (1) comprising a ferromagnetic conductive plate (8), under and without contact with said first disc (30), having a surrounding cutout (80) without contacting the periphery (70) of said second disk (7) with a variable gap (E), and closing a magnetic circuit comprising an actuator (6), said first disk (30), said second disk (7), and a structure e (34) in which said exhaust wheel (3) pivots and which carries said plate (8).
    公开号:CH711894A2
    申请号:CH01803/15
    申请日:2015-12-10
    公开日:2017-06-15
    发明作者:Amaury Gendron
    申请人:Nivarox-Far S A；
    IPC主号:
    专利说明:

    Description
    FIELD OF THE INVENTION [0001] The invention relates to a watch exhaust mechanism, arranged to cooperate with torque supply means, and comprising a regulating mobile cooperating with an escape wheel.
    The invention also relates to a watch movement comprising such an exhaust mechanism.
    The invention further relates to a watch comprising at least one such movement.
    The invention relates to the field of watchmaking exhaust mechanisms, and, more particularly, the field of non-contact exhausts.
    BACKGROUND OF THE INVENTION [0005] The invention relates to a cylinder escapement mechanism.
    [0006] WO 2015/096 973 A2, in the name of Nivarox-FAR S.A., describes a magnetic cylinder escapement, in which a circular magnet is integral with the regulating member. The realization of a perfectly circular magnet concentric with the sprung balance is however delicate. In addition, this magnetic element on the sprung balance is sensitive to external fields, which can therefore disrupt the running of the watch. SUMMARY OF THE INVENTION [0007] The invention proposes to improve the cylinder magnetic escapement of the same inventor, by reducing its sensitivity to external magnetic fields, and by allowing a simpler and less expensive embodiment.
    For this purpose, the invention relates to a watch exhaust mechanism according to claim 1.
    The invention also relates to a watch movement comprising such an exhaust mechanism.
    The invention further relates to a watch comprising at least one such movement.
    BRIEF DESCRIPTION OF THE DRAWINGS [0011] Other characteristics and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, in which: FIGS. 1 to 4 show, schematically, and in perspective, the elements constituting a basic elemental brick, and illustrate the principle of the invention; figs. 5 and 6 illustrate, in section and in perspective, a clock escapement mechanism according to the invention, built on this principle, and FIGS. 7 to 21 represent the different successive stages of operation, while FIG. 22 relates to the case of the application of a too high torque, for example during an impact, and the role of mechanical stops that includes the mechanism according to the invention; fig. 23 is a block diagram showing a watch comprising a watch movement which itself comprises such an escape mechanism.
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0012] The invention relates to the field of watch exhaust mechanisms, and more particularly to the field of non-contact exhausts.
    The mechanical cylinder exhausts have the advantage of providing safety in case of excessive torque, especially during an impact, but their high level of friction significantly alters the performance of the exhaust.
    The present invention uses the same operating sequences as the international application WO 2015/096 973 A2, which is based on a magnetic repulsion system, and which is incorporated herein by reference, but on a different basis from a system. in magnetic attraction.
    The principle, called "elementary operating brick", based on the magnetic attraction is illustrated in FIGS. 1 to 4.
    FIG. 1 shows a cylindrical magnet M, above two metal plates A and B. The magnet M is attracted by a magnetic attraction force FA against the metal plate A on which it rests.
    This magnet M is pushed from right to left, that is to say from the plate A to the plate B, by an external force not shown; the arrow F illustrates the path that the magnet M would like to travel.
    Under the action of this external force, the magnet M slides and will move closer to the edge A1 of the plate A, as shown in FIG. 2. It will not go further because there is an intermediate gap E too wide between the edge A1 of the plate A and a first edge B1 of the plate B: the magnet M sees "empty" and, as it is attracted to the plate A, it does not cross this void of the intermediate space E.
    If the plate B is moved by a movement T, tending to replace the first edge B1 of the plate B a second edge B2, closer to the plate A, as shown in FIG. 3, the space between the two plates A and B, from the point of view of the magnet M, is greatly reduced.
    The magnet M no longer perceives the "vacuum" and can continue to move from right to left, from the plate A to the plate B, crossing the reduced residual space ER.
    FIG. 4 shows the magnet M above the plate B, to which it is attracted by a magnetic attraction force FB.
    The invention relates to an escapement mechanism 1 clock, which is arranged to cooperate with torque supply means, including driving motor means 2, such as a barrel or the like.
    This exhaust mechanism 1 comprises a movable regulator 5 cooperating with an escape wheel 3.
    According to the invention, this exhaust mechanism 1 is a cylinder magnetic escapement. And its escape wheel 3 comprises actuators 6 at the periphery of a first disc 30. In a particular embodiment of the invention, this first disc 30 is made of soft ferromagnetic material.
    Each of the actuators 6 comprises a first pulse portion 61, and a second stop portion 62. These actuators 6 are composed of magnetic parts, which can be made in two ways: with a magnet; or as magnetic field guides derived from magnets arranged in an area that includes space available for this purpose, for example near the axis of rotation of the escape wheel, these fields being thus guided where we want the actuator to be.
    These first impulse portions 61 and second stop portions 62 are magnetized, or ferromagnetic conductors of a magnetic field, and are arranged to each guide a magnetic field parallel to the pivot axes, and arranged to cooperate. in attraction, through the first disk 30, with a second non-magnetized soft ferromagnetic disk 7 secured to the regulator mobile 5.
    These first and second parts 61 and 62 are designated as the first magnetic part 61 and the second magnetic part 62, in the remainder of the present description, whatever their embodiment.
    This mechanism 1 comprises a ferromagnetic conductive plate 8, under the first disk 30 and without contact with it, having a cutout 80 surrounding without contact the periphery 70 of the second disk 7 with a variable air gap E. This plate 8 closes a magnetic circuit comprising such an actuator 6, the first disk 30, the second disk 7, and a structure 34 in which the exhaust wheel 3 pivots and which carries the plate 8.
    More particularly, this escapement mechanism 1 comprises at least one escape wheel 3, which is subjected to a pivoting torque, of moment less than or equal to a nominal moment, around a first pivot axis D1. under the action of such torque supply means.
    This exhaust mechanism 1 comprises a regulator or resonator member 4 secured to a movable regulator 5, preferably pivotally mounted about a second real or virtual pivot axis D2. This regulator or resonator member 4 is in particular of the spring-balance type or the like.
    According to the invention, the exhaust mechanism 1 constitutes a magnetic cylinder escapement, and as shown in FIGS. 5 and 6, the escape wheel 3 comprises a plurality of such actuators 6, which are evenly spaced on the periphery of a first disk 30, in particular but not limited to ferromagnetic soft magnetic field conductor, pivotally integral with the wheel 3. Each of these actuators 6 comprises magnetic parts, and is arranged to cooperate in attraction, through the first disk 30, with at least one second disk 7 that includes the regulating mobile 5, and integral in pivoting with it .
    This second disc 7 is soft ferromagnetic, it is not magnetized.
    Preferably, in the non-limiting embodiment illustrated by the figures, each actuator 6 comprises at least: a first magnetic part 61, called a pulse magnet, and a second magnetic part 62, called a stop magnet, which generate or guide magnetic fields substantially of the same direction and in the same direction, substantially parallel to the first pivot axis D1 of the escape wheel 3.
    More particularly, these actuators 6 further comprise mechanical stops 9. The first magnetic portion 61, the second magnetic portion 62, and the mechanical stop 9 are successive, on a substantially equal radius with respect to the first axis of pivoting D1.
    Substantially in the same plane as the second disk 7, the exhaust mechanism 1 comprises a ferromagnetic conductive plate 8, disposed under the first disk 30, and without contact with it. Preferably, this plate 8 comprises a cutout 80 which surrounds, without contact with it, the periphery 70 of the second disk 7, so as to provide an air gap between the plate 8 and the second disk 7.
    The escape wheel 3 comprises a shaft portion 31, pivoted in bearings 32 and 33 of a structure 34. And the relative arrangement of the first disk 30, actuators 6, the second disk 7, the plate 8, and the structure 34, is such that the magnetic circuit can be closed in a schematically interrupted loop under the reference B of FIG. 5.
    When the actuators 6 comprise mechanical stops 9, the movable regulator 5 comprises a truncated ring 50, non-ferromagnetic, which constitutes a complementary mechanical stop.
    In a manner peculiar to the invention, the second disc 7 comprises a first peripheral zone 71 defining with the plate 8 a first gap E1 larger than a second air gap E2 existing between the plate 8 and a second peripheral zone 72 connected at the first zone 71. And the actuators 6, and the first gap E1, and the second air gap E2, are dimensioned so that a first magnetic portion 61 can cross only the second gap E2, and is blocked by the first air gap E1 , according to the principle of the elementary brick of operation, explained above.
    More particularly, and as visible in the nonlimiting embodiment of the figures, the first zone 71 is a cylindrical sector of first radius R1 around the second pivot axis D2, which is coaxial with the second zone 72 which is a sector cylindrical second radius R2.
    Preferably, and not limitation, the truncated crown 50 is superimposed on the first zone 71, and its opening corresponds to the second zone 72.
    The regulator member 4 is in turn devoid of magnet.
    The kinematics is illustrated by FIGS. 7 to 21 simplified, which represent neither the balance or the hairspring, but only the components cooperating directly with the escape wheel 3.
    In FIG. 7, the state of the system is as follows: the escape wheel 3, subjected to the torque transmitted by the barrel, tends to turn clockwise, but is here at a standstill. The balance also rotates clockwise, under the effect of the return torque of the spiral.
    The first magnetic pulse portion 61 of a first actuator 6 is facing the first region 71 of the second disk 7, at a first air gap E1, because it is forced by the escape wheel 3 to leave an upstream portion 8A of the ferromagnetic plate 8.
    The largest part of the same first actuator 6, constituting the second magnetic stop part 62, has a greater magnetic force and does not come out of the ferromagnetic plate 8.
    In this position, the first magnetic pulse portion 61 is at a first gap E1 widest, in which it has penetrated, and the second magnetic stop part 62 does not pass. The actuator 6 concerned is stopped at the edge of the gap E.
    FIG. 8 illustrates the beginning of the time pulse: the balance passes through the neutral point, where the return torque of the balance spring is zero, and the first magnetic pulse part 61 will start to apply a pulse to the balance by magnetic attraction of the second. disc 7. The escape wheel 3 is still at a standstill. The time shift of the pendulum is illustrated by the arrow DB. It can be seen that the second zone 72 of the second disk 71 approaches the first magnetic pulse part 61.
    FIG. 9 shows the end of the time pulse: the first magnetic pulse part 61 attracts the balance and closes the air gap cooperating with the second zone 72 and the second air gap E2, and thus opens the way to the second magnetic part d stop 62, which can cross this second gap E2. The escape wheel 3 is still stopped, but will start to turn clockwise.
    The pulse F1 by magnetic attraction is comparable to a constant force.
    In each of the figures, the arrows FB and FR indicate the path already traveled by the balance wheel and the escape wheel respectively.
    FIG. 10 illustrates the beginning of the alternation of the balance wheel and the rotation of the escape wheel: the balance wheel rotates under the effect of the pulse, and the escape wheel 3 advances. The first actuator 6, which has crossed the gap E, is now superimposed on the second disk 70, while a second actuator 6, which was previously superimposed on the second disk 6, is now approaching at the level of the gap E, but between the second disk 7 and a downstream portion 8B of the ferromagnetic plate 8.
    FIG. 11 shows the rotation of the balance under the effect of the pulse, and the escape wheel 3 which is stopped by the second magnetic stop portion 62 of the second actuator 6 inside the ring 50, the first part magnetic pulse 61 of the second actuator 8 covering the first gap E1 on the side of the downstream portion 8B. It is understood that each actuator 6 plays a role equivalent to that of a tooth of the escape wheel in a conventional mechanical escapement.
    FIG. 12 corresponds to the maximum amplitude of the balance wheel, the escape wheel 3 is still at a standstill.
    权利要求:
    Claims (10)
    [1]
    FIG. 13 shows the counterclockwise rotation of the balance wheel, the escape wheel being always at a standstill. FIG. 14 shows the continued counterclockwise rotation of the balance, which tends to bring the second zone 72 of the second disc 7, the second actuator 6 still waiting for passage to the downstream portion 8B. FIG. 15 shows the situation at the instant before the start of the pulse, where the second zone 72 of the second disk 7 arrives at the first magnetic pulse portion 61 of the second actuator 6. The escape wheel is always at shutdown. FIG. 16 shows the end of the pulse printed by the first pulse magnetic portion 61 of the second actuator 6. The escape wheel 3 begins to rotate. FIG. 17 shows the exhaust wheel 3 which is stopped, after turning. The second actuator 6 has crossed the passage between the second disc 7 and the downstream part 8B, above which it is now located, and a third actuator 6 is at the interface between the upstream portion 8A and the second disc 7 , and is stopped, only its first pulse magnetic portion 61 being above the gap E1, while its second magnetic stop portion 62 can not pass. FIG. 18 shows the continued anti-clockwise rotation of the balance wheel, the escape wheel being at a standstill. FIG. 19 shows the clockwise rotation of the balance after the reversal of direction, the escape wheel is always stopped, blocked by the third actuator 6. [0061] FIG. 20 shows the continued clockwise rotation of the balance, the second zone 72 is close to the third actuator 6, and the escape wheel 3 is stopped. FIG. 21 shows the beginning of the hour pulse, given by the first pulse magnetic portion 61 of the third actuator 6. The escape wheel is still at a standstill. The cycle continues with a return to FIG. 7. It is understood that, in this very schematic representation, the pulses are not given exactly for the same angular position of the plate, the skilled person knows how to make an adequate trace of the exhaust to match them. In case of excessively high torque, FIG. 22 shows the role of the mechanical stops 9 and complementary mechanical stop 50, absorbing the printed torque to the escape wheel. The invention also relates to a watch movement 100 comprising such an escape mechanism. The invention also relates to a watch 200 comprising at least one such movement 100. The magnetic escapement cylinder by attraction according to the invention has a progress on the magnetic cylinder exhaust repulsion because it is less sensitive to external magnetic fields, and it is easier to achieve. claims
    1. Exhaust mechanism (1) of clockwork, arranged to cooperate with torque supply means (2), and comprising at least one escape wheel (3), which is subjected to a pivoting torque, of moment less than or equal to a nominal moment, around a first pivot axis (D1), under the action of said torque supply means (2), and comprising a regulating member (4) integral with a regulating mobile ( 5) pivotally mounted about a second pivot axis (D2), characterized in that said exhaust mechanism (1) constitutes a magnetic cylinder escapement, and in that said escape wheel (3) comprises a plurality actuators (6), evenly spaced on the periphery of a first disk (30), pivotably integral with said exhaust wheel (3), said actuators (6) each having magnetic or magnetized conductive parts of a magnetic field, and being each has arranged to cooperate in attraction, through said first disc (30), with at least one second disc (7) that comprises said movable regulator (5) and integral pivotally with it, said second disc (7) being ferromagnetic soft and not each said actuator (6) comprising at least: a first magnetic pulse part (61) and a second magnetic stop part (62) which generate or guide magnetic fields of substantially the same direction and in the same direction , substantially parallel to said first pivot axis (D1) of said escape wheel (3), and in that said exhaust mechanism (1) comprises, substantially in the same plane as said second disk (7), a plate Ferromagnetic conductor (8) arranged under said first disk (30) and without contact therewith, said plate (8) having a cutout (80) which surrounds, without contact with it, the periphery (70) of said second disk (7) , so as to enacting a variable gap (E) between said plate (8) and said second disk (7), and said plate (8) being arranged to close the magnetic circuit constituted by at least one said actuator (6), said first disk (30), said second disk (7), and a structure (34) in which said exhaust wheel (3) pivots and which carries said plate (8).
    [2]
    2. Exhaust mechanism (1) according to claim 1, characterized in that said second disk (7) comprises a first peripheral zone (71) defining with said plate (8) a first gap (E1) greater than one second air gap (E2) existing between said plate (8) and a second peripheral zone (72) connected to said first zone (71), and in that said actuators (6) and said first air gap (E1) and said second air gap ( E2) are dimensioned so that a said first magnetic portion (61) can cross only said second gap (E2) and is blocked by said first gap (E1).
    [3]
    3. Exhaust mechanism (1) according to claim 2, characterized in that said first zone (71) is a cylindrical sector of first radius (R1) around said second pivot axis (D2) coaxial with said second zone (72). ) which is a cylindrical sector of second radius (R2).
    [4]
    4. Exhaust mechanism (1) according to one of claims 1 to 3, characterized in that each said actuator (6) comprises, following said first magnetic part (61), and said second magnetic part ( 62), a mechanical stop (9), arranged to cooperate, in case of excessively high torque, with a truncated crown (50), non-ferromagnetic, that includes said movable regulator (5), and which constitutes a complementary mechanical stop.
    [5]
    5. Exhaust mechanism (1) according to claim 4, characterized in that said truncated crown (50) is superimposed on said first zone (71), and in that its opening corresponds to said second zone (72).
    [6]
    6. Exhaust mechanism (1) according to claim 4 or 5, characterized in that said first magnetic portion (61), said second magnetic portion (62), and said mechanical stop (9) succeed one another, over a substantially radius. equal to the first pivot axis (D1).
    [7]
    7. Exhaust mechanism (1) according to one of claims 1 to 7, characterized in that said regulating member (4) is devoid of magnet.
    [8]
    8. Exhaust mechanism (1) according to one of claims 1 to 7, characterized in that said first disk (30) is made of soft ferromagnetic material.
    [9]
    9. Watch movement (100) comprising an exhaust mechanism (1) according to one of the preceding claims.
    [10]
    10. Watch (200) comprising at least one movement (100) according to the preceding claim.
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    同族专利:
    公开号 | 公开日
    CH711894B1|2019-07-31|
    CH711894B8|2019-10-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2019-08-15| PK| Correction|Free format text: RECTIFICATION INVENTEUR |
    2019-10-15| PK| Correction|Free format text: CORRECTION INVENTEUR. |
    优先权:
    申请号 | 申请日 | 专利标题
    CH01803/15A|CH711894B8|2015-12-10|2015-12-10|Magnetic clock escapement mechanism with cylinder.|CH01803/15A| CH711894B8|2015-12-10|2015-12-10|Magnetic clock escapement mechanism with cylinder.|
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