• 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 marine chronometer comprising a watch (10) tiltable on a support (30) via a cardan suspension (12), a chronometer characterized in that the support also comprises a cradle (20) movable in translation between a rest position where the watch is free movement on the cardan suspension, and a holding position where the watch is supported on the cradle.
    公开号:CH713106A2
    申请号:CH01463/16
    申请日:2016-11-02
    公开日:2018-05-15
    发明作者:Mace Jérôme
    申请人:Montres Breguet Sa；
    IPC主号:
    专利说明:

    Description
    Technical field and state of the art The invention relates to a marine chronometer, comprising a generally large watch intended to keep time on boats. In known manner, such a watch is fixed to a support by means of a cardan suspension so that the watch is tiltable in all directions relative to the support. The universal joint suspension thus ensures the watch and more precisely the watch face a horizontal position whatever the movements of the boat. A cardan suspension is fragile, however, and tolerates displacement and shock quite poorly, particularly due to the weight of the watch it wears.
    [0002] Also, a marine chronometer must be able to be used in difficult climatic conditions and must in particular resist water. In known manner, the watch is equipped with a waterproof case. However, the tightness of the mechanical contact zone between the watch mechanism, inside the case, and the winding mechanism, positioned outside the watch case, generally provided by a seal. is not always guaranteed whatever the conditions of use, for example in the case of a time setting the effectiveness of the seal can be reduced.
    Description of the invention The invention proposes a new marine chronometer, not presenting at least one of the drawbacks of the known marine chronometers described above.
    To this end, the invention provides a marine chronometer comprising a watch mounted inclinable on a support by means of a cardan suspension, chronometer characterized in that the support also comprises a cradle movable in translation between a rest position where the watch is free to move on the cardan suspension, and a holding position where the watch is supported on the cradle. In other words, in the rest position, the cradle supports the weight of the watch, thereby unloading the cardan suspension.
    According to one embodiment, the cradle comprises magnetic means capable of cooperating with associated magnetic means of the watch to immobilize the watch in the cradle when the cradle is in the holding position.
    The cradle may also have an intermediate position between the rest position and the holding position, an intermediate position in which the magnetic means of the cradle are adapted to cooperate with the associated magnetic means of the watch to orient the watch (initially in free rotation on the universal joint with respect to the cradle, before immobilizing it in the cradle.
    According to one embodiment, the support of a stopwatch according to the invention can include:
    at least one retaining pin on which the cradle is slidably mounted and a scissor type lifting mechanism for sliding the cradle along the retaining axis between the retaining position and the rest position.
    The lifting mechanism is for example manually operated by a lever.
    The support may also include means of magnetic isolation movable between:
    an isolation position where, when the cradle is in the rest position, the isolation means form a magnetic screen between the magnetic means of the cradle and the magnetic means of the watch and a withdrawal position where, when the cradle is in holding position, the magnetic isolation means are inactive.
    The use of magnetic isolation means in the rest position of the cradle allows the use of sufficiently strong magnetic devices to guarantee zero or almost zero coupling when the cradle is in the rest position, without it being necessary. to have a distance between the cradle at rest and the watch too great. This makes it possible to limit the external dimensions of the chronometer.
    According to one embodiment, the watch may include a mechanism for winding the barrel of its timepiece movement and which comprises a winding rotor engaged with a winding train of the conventional mechanical horological movement which will not be described in detail. The rotor comprises a plurality of magnetic devices distributed over an outer periphery of the rotor to form the magnetic means of the watch adapted to cooperate with the magnetic means of the cradle when the cradle is in the holding position or in the intermediate position. The cradle may in turn comprise an annular stator comprising a plurality of magnetic devices distributed over an inner periphery of the stator to form the magnetic means of the cradle. The stator can be a toothed wheel adapted to mesh with a winding pinion arranged outside the watch and independent of the watch when the cradle is in the holding position. Thus, in the holding position, the cradle can be used on the one hand to immobilize and support the watch, and on the other hand to wind the watch mechanism.
    The invention also relates to a marine chronometer comprising a watch mounted tilting on a support by means of a cardan suspension, chronometer characterized in that the watch comprises a mechanical watch movement including a winding rotor in engagement with a gear train for winding a watch movement barrel, and in that the support comprises a mobile winding means between:
    a winding position where the watch rotor is magnetically coupled with the winding means and a rest position where the watch rotor is free to rotate relative to the winding means.
    The use of a magnetic coupling to wind the barrel of the watch eliminates the need for a winding passage through the watch case and thus achieves a perfectly waterproof watch case.
    In addition, reassembly can advantageously be carried out without having to turn the case over and therefore makes it possible to keep the time reading during the reassembly operation.
    According to one embodiment, the winding means comprises an annular stator comprising a plurality of magnetic devices distributed over an inner periphery of the stator, the stator being movable between the winding position and the rest position, the stator being a toothed wheel adapted to mesh with a winding pinion disposed outside of the watch and independent of the latter when the stator is in the winding position.
    Brief Description of the Figures The invention will be better understood, and other characteristics and advantages of the invention will appear in the light of the following description of examples of the production of a stopwatch according to the invention. These examples are given without limitation. The description should be read in conjunction with the accompanying drawings in which:
    fig. 1 fig. 1a fig. 2a fig. 2b and 2c fig. 3 fig. 4a and 4b fig. 5a, 5b fig. 5c, 5d, 5e is a view of the chronometer in the rest position, is a perspective view of the chronometer case out of its support structure, is a view of the chronometer in the holding position, are detail views of the chronometer of the fig. 2a, is a partial view of the magnetic drive mechanism of the chronometer according to the invention, are views of an essential element of the chronometer according to the invention, are views of another element of the chronometer according to the invention, are partial detail views showing the operation of a chronometer according to the invention.
    Description of an embodiment of the invention As said previously, the invention relates to a marine chronometer comprising a watch 10 mounted tilting on a support 30 by means of a cardan suspension. In the example shown, the watch 10 comprises a housing 11 in the form of a portion of a sphere in which the clock movement M of the watch is housed, the motor means of which are formed by a barrel B. The housing 11 is conventionally sealed by a crystal under which the dial C, the hands A, as well as the watch movement are positioned, as can be seen in FIG. 1a. The cardanic suspension of watch 10, known per se, is represented simply by a suspension ring 12; the mechanical connections between the ring 12 and the support 30 are not shown for the sake of clarity of the figures.
    The chronometer according to the invention is characterized in that the support also comprises a cradle 20 movable in translation between a rest position (fig. 1) where the watch is free to move on the cardan suspension, and a position holding (fig. 2a, 3) where the watch is supported on the cradle. In the example also shown, the cradle has an intermediate position between the rest position and the holding position, an intermediate position in which the magnetic means of the cradle are adapted to cooperate with the associated magnetic means of the watch to orient the watch in the cradle. The cradle is here movable in translation in a direction substantially perpendicular to the support.
    To ensure the mobility of the cradle, the support comprises in the example shown:
    two retaining pins 31 positioned on either side of the cradle, pins on which the cradle is slidably mounted by means of fixing lugs 31 pierced with a hole of diameter adjusted to the diameter of the retaining pins 31, and a scissor type lifting mechanism 32 (fig. 5) for sliding the cradle along the holding axis between the holding position and the rest position; the lifting mechanism is thus set in motion manually by a user via a lever 33.
    More specifically in the example shown, the lifting mechanism comprises the lever 33 and two pairs of connecting rods 34, 35 (cf. fig. 1,2a, 2c in particular), each pair of connecting rods comprising two associated connecting rods 34, 35 in scissors and each pair of connecting rod being coupled to a retaining pin 31 in the following manner. A pair of connecting rods comprises two connecting rods 34, 35 produced in the following manner. A connecting rod 34 comprises a foot articulated by a pivot connection with the support 30 and a free end of the connecting rod 34 is mechanically articulated with a fixing lug 31a of the cradle. It will also be noted that the connecting rod 34 comprises an elastic blade 34b which allows the legs of the stator 31a to be pinched and guarantees good locking of the housing. A connecting rod 35 comprises a foot articulated by a pivot connection with the support 30 and a free end of the connecting rod 35 has an oblong opening 36 extending along a longitudinal axis of the connecting rod 35. The two connecting rods 34, 35 are associated together by a pivot link with an axis 35a passing between the two ends of the connecting rod 24 and between the foot and the oblong opening 36 of the connecting rod 35 to form a scissor effect. The free ends of the two connecting rods 35 are rigidly connected together so that the movement of one of the connecting rods 35 mechanically causes an identical movement of the other connecting rod 35. The lever 33 has two sides with a substantially L-shape or in "1"; a free end of a large side of the lever forms a handle 37 for gripping; a free end of a small side 38 of the lever is slidably mounted in the oblong opening 36 of the connecting rod 35; two notches 36a, 36b in the oblong opening make it possible to immobilize the free end of the short side of the lever in predefined positions; finally an intersection between the short side and the long side of the lever 33 is articulated with the support 30 by a pivot link. At rest, a pair of connecting rods 34, 35 form a closed chisel, the free end of the short side 38 of the lever being positioned in the oblong opening on the side of the axis 35a of the scissors. A traction / rotation on the handle 37 of the lever causes a displacement of the free end of the short side 38 of the lever in the oblong opening 36 in the direction of the free end of the connecting rod 35, displacement which in turn causes an elevation from the axis 35a of the scissors and by ricochet an elevation of the free end of the connecting rod 34 and of the fixing lug 31a of the cradle along the holding axis 31. A traction / rotation of the lever 33 thus causes a translational movement of the cradle 20 along the holding axes.
    The cradle 20 comprises magnetic means 22 able to cooperate with magnetic means 14 associated with the watch 10 to immobilize the watch in the cradle when the cradle is in the holding position. The cradle has in the example shown an annular shape and its magnetic means are distributed over an inner periphery of the cradle.
    According to one embodiment (not shown) of a stopwatch according to the invention, the magnetic means 14 of the watch comprise a plurality of magnetic devices distributed around the periphery of the case 11 of the watch, preferably in the inside the waterproof case, in a plane substantially parallel to the plane of the watch crystal. The magnetic coupling between the magnetic means of the cradle and the magnetic means of the watch makes it possible to orient the watch relative to the cradle to balance the weight of the watch when it rests on the cradle.
    According to the embodiment shown in the figures, the cradle 20 of the support 30 allows the winding of the barrel of the mechanical watch movement of the watch, in addition to its immobilization. To this end, the watch 10 comprises a mechanism comprising a winding rotor 13, and the magnetic means 14 comprise a plurality of magnetic devices distributed over an outer periphery of the rotor to form the magnetic means of the watch adapted to cooperate with the magnetic means. of the cradle when the cradle is in the holding position or in the intermediate position. Inside the watch case, the rotor 13 is associated with a toothed wheel 13a coupled in known manner to the usual elements of the winding mechanism of the barrel.
    The cradle 20 comprises an annular stator 21, here in the form of a toothed wheel (fig. 3) and rotatably mounted relative to the support. The stator of the cradle comprises a plurality of magnetic devices 22 distributed over an inner periphery of the stator to form the magnetic means of the cradle. The cradle also includes a casing 23 to protect the outer periphery of the stator (toothed wheel).
    Finally the support is completed by a winding pinion 40 adapted to mesh with the stator 21 when the cradle is in the holding position, an opening 24 in the casing being provided to allow the mechanical connection between the winding pinion 40 and the stator 21. The winding pinion 40 which is arranged outside the case and independent of the watch, can be rotated manually by means of a key 41, a thumb wheel, a crank, ... optionally supplemented with an electrical assistance device. The winding pinion and the cradle together form a mobile winding means between:
    a winding position (corresponding to the cradle holding position) where the rotor 13 of the watch is magnetically coupled with the winding means, in particular with the stator 21, the watch case being moreover immobilized in the cradle, and a rest position (corresponding to the rest position of the cradle) where the watch rotor is free to rotate relative to the winding means.
    By magnetic devices is meant throughout this description of the magnets, permanent or not, or magnetic parts capable of being magnetically coupled to magnets. For example, magnets can be used to make the magnetic devices 22 of the cradle and magnetic parts are used to make the magnetic devices 14 of the watch, or the reverse, or magnets are chosen to make the magnetic devices of the cradle and those of the watch. The choice of magnetic devices, their dimensions, their magnetic force, their number, their distribution on the periphery of the cradle and on the periphery of the watch are chosen according to the magnetic force sought to immobilize the watch on the cradle and / or for drive the winding rotor 13 in rotation.
    The cradle according to the embodiment shown in the figures is used in the following manner. In the rest position (fig. 5b, 5c), the cradle rests on the support and is away from the watch; the magnetic means 22 of the cradle and the magnetic means 14 of the watch are distant from each other so that there is no magnetic coupling between them; the watch is thus free to move on the cardan suspension.
    When the user pulls on the handle 37 of the lever 33, the cradle is lifted by the mechanism 32 to the intermediate position (corresponding to the notch 36a): the cradle 20 is close to the housing 11 of the watch without being in contact and where the magnetic means 22 of the cradle are magnetically coupled with the magnetic means 14 of the watch (fig. 5d). Thus, the magnetic devices 22 of the stator attract the magnetic devices 14 of the watch until the axis of the stator of the cradle and the axis of the rotor of the watch are aligned, the watch being mounted mobile on the cardan suspension. . Brought to this position, the watch is held stationary and in balance (in terms of weight) above the cradle by magnetic coupling.
    When the user lowers the lever 33 a little more, the cradle is lifted by the mechanism 32 to the holding position (notch 36b): the cradle is in contact with the case 11 of the watch so that the weight of the watch rests on the cradle, the blades 34b helping to press the stator against the housing 11. The magnetic coupling between the magnetic devices 22 of the cradle and the magnetic means 14 of the watch is then maximum. The watch is immobilized on the cradle so that the cardan suspension is relieved of the weight of the watch. Also in this position, the winding pinion 40 meshes with the stator 21 of the cradle. Thus a rotation of the key 41 rotates the winding pinion, which in turn drives the stator 21 in turn. In turn, the stator rotates the rotor 13 by magnetic coupling, which allows the barrel to be raised. the watch.
    A stopwatch according to the invention is advantageously supplemented by magnetic isolation means 50 movable between:
    an isolation position where, when the cradle is in the rest position, the isolation means form a magnetic screen between the magnetic means of the cradle and the magnetic means of the watch and a withdrawal position where, when the cradle is in holding position, the magnetic isolation means are inactive.
    In the example shown in the figures, the magnetic insulation means consist of a plurality of pallets 51 made of a magnetic shielding material; the pallets are mounted side by side substantially in a circle inside the cradle; the pallets are pivotally mounted each with respect to a pivot axis substantially parallel to the support, between:
    an isolation position, corresponding to the rest position of the cradle 20, where the pallets are deployed to cover the magnetic devices 22 of the cradle; any residual magnetic coupling between the stator and the rotor is thus neutralized and a withdrawal position, corresponding to the position for holding the cradle, where the vanes are spaced from the cradle and no longer form a magnetic screen between the magnetic devices of the rotor and those of the stator.
    In practice here, the pallets are supported on the housing 23 of the cradle and are rotated when the cradle 20 is moved in translation. A counterweight 52 can be provided on each pallet to keep the pallet in abutment against the casing 23 during movements of the cradle 20.
    In the example which has just been described the mechanism is of the scissor type, for carrying out the movement of raising and lowering of the stator but it is understood that according to variants of other type of lifting mechanisms can be considered, by way of example, a mechanism of the simple knee type or with two connecting rods or a mechanism of the knee press type or a system of jacks, for example jacks with telescopic screws or not, could be provided. Such mechanisms are described in particular on pages 144 and 145 of the book entitled "Des Mécanismes Elémentaires" published by Decoopman, No ISBN 97 823 650 027 which are incorporated here by reference.
    NOMENCLATURE [0034]
    Watch rotor suspension housing magnetic devices stator cradle magnetic devices
    23 box 24 opening 30 support 31 holding pin 31a fixing lug 32 lifting mechanism 33 the sink 34, 35 pair of connecting rods forming scissors. 35a mechanical connection between the two connecting rods 35 36 oblong opening 36a, 36b notches in the oblong opening 37 lever handle 33 38 small side of the lever 39 connecting axis of two connecting rods 34, 35 40 winding pinion 41 key 50 magnetic isolation means 51 palette 52 counterweight
    权利要求:
    Claims (13)
    [1]
    claims
    1. Marine chronometer comprising a watch (10) mounted tilting on a support (30) by means of a cardan suspension (12), chronometer characterized in that the support also comprises a cradle (20) movable in translation between a rest position where the watch is free to move on the cardan suspension, and a holding position where the watch is supported on the cradle.
    [2]
    2. Stopwatch according to claim 1 wherein the cradle is movable in translation in a direction substantially perpendicular to the support.
    [3]
    3. Stopwatch according to one of the preceding claims, characterized in that the cradle (20) comprises magnetic means (22) able to cooperate with magnetic means (14) associated with the watch (10) to immobilize the watch in the cradle when the cradle is in the holding position.
    [4]
    4. Chronometer according to the preceding claim wherein the cradle has an intermediate position between the rest position and the holding position, intermediate position in which the magnetic means of the cradle are adapted to cooperate with the associated magnetic means of the watch to orient the watch in the cradle.
    [5]
    5. Stopwatch according to one of claims 3 to 4, also comprising magnetic isolation means (50, 51) movable between:
    an isolation position where, when the cradle is in the rest position, the isolation means form a magnetic screen between the magnetic means of the cradle and the magnetic means of the watch and a withdrawal position where, when the cradle is in holding position, the magnetic isolation means are inactive.
    [6]
    6. Stopwatch according to claim 5 wherein the magnetic isolation means are driven in movement by the cradle.
    [7]
    7. Stopwatch according to one of claims 3 to 6 wherein the cradle comprises a rotary annular stator (21) comprising a plurality of magnetic devices (22) distributed over an inner periphery of the stator to form the magnetic means of the cradle.
    [8]
    8. Stopwatch according to claim 7 wherein the stator (21) is a toothed wheel adapted to mesh with a winding pinion (40) when the cradle is in the holding position.
    [9]
    9. A stopwatch according to claim 8 wherein the watch comprises a mechanical watch movement driven by a barrel and a mechanism for winding the barrel comprising a winding rotor (13) engaged with a gear train for winding the barrel, and in which the rotor winding (13) comprises a plurality of magnetic devices (14) distributed over an outer periphery of the rotor to form the magnetic means of the watch adapted to cooperate with the magnetic means of the cradle when the cradle is in the holding position or in the intermediate position .
    [10]
    10. Stopwatch according to one of the preceding claims, in which the support comprises: at least one retaining pin (31) on which the cradle is slidably mounted and a scissor-type lifting mechanism (32) for sliding the cradle along the holding axis between the holding position and the rest position.
    [11]
    11. Marine chronometer comprising a watch (10) mounted tilting on a support by means of a cardan suspension, chronometer characterized in that the watch comprises a mechanical movement driven by a barrel and comprising a winding rotor (13 ) in engagement with a gear train for reassembling the barrel, and in that the support comprises a means of movable winding between:
    a winding position where the winding rotor (13) of the watch is magnetically coupled with the winding means and a rest position where the winding rotor (13) of the watch is free to rotate relative to the winding means.
    [12]
    12. A stopwatch according to claim 11 wherein the winding means comprises an annular stator comprising a plurality of magnetic devices distributed over an inner periphery of the stator, the stator being movable between the winding position and the rest position, the stator being a gear adapted to mesh with a winding pinion (40) when the stator is in the winding position.
    [13]
    13. A stopwatch according to claim 12 wherein the winding pinion (40) is disposed outside the case and independent of the watch.
    CH 7i 3 ^ 06 A2 in
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    同族专利:
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    法律状态:
    2020-04-15| AZW| Rejection (application)|
    优先权:
    申请号 | 申请日 | 专利标题
    EP16196926.6A|EP3318933B1|2016-11-02|2016-11-02|Device for immobilising and/or winding a marine chronometer|
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