• 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 timepiece comprises a clock mechanism and a switching device (1) arranged to switch this clock mechanism between two states. The switching device comprises a movable switching member (23) and a rotary control member (21) arranged to be driven step-by-step so as to successively occupy a plurality of distinct angular positions around its axis of rotation. The movable switching member and the rotary control member respectively carry a first magnetic structure (31) and a second magnetic structure arranged so that, in a first angular position of the rotary control member, a first magnetic force acts. on the switching member in a given direction, and that in a second angular position of the rotary control member, a second magnetic force acts on the switching member in the opposite direction.
    公开号:CH712669A2
    申请号:CH00656/17
    申请日:2017-05-19
    公开日:2018-01-15
    发明作者:Légeret Benoît；Junod Benoît
    申请人:Montres Breguet Sa；
    IPC主号:
    专利说明:

    Description
    FIELD OF THE INVENTION
    The present invention relates to a switching device of a clock mechanism between two functional states.
    More particularly, the present invention relates to a timepiece comprising, on the one hand, a watch mechanism that can switch between a first state and a second determined state and, on the other hand, a switching device arranged to make to switch the watch mechanism between its first and second states. This switching device comprises a movable switching member and a rotary control member which is arranged to be driven step-by-step in a given direction of rotation, so as to successively occupy a plurality of angular positions around an axis of rotation. rotation of this control member. The switching device is arranged so that a step-by-step rotation of the rotary control member causes reciprocating movement of the movable switching member, substantially in a plane perpendicular to said axis of rotation, so that at least a part of this movable switching member moves between two radial positions for which the clock mechanism is respectively in its first state and its second state.
    PRIOR ART
    [0003] A large number of timepieces are already known which correspond to the field of the invention. In particular, EP 2 602 675 discloses a watch movement which comprises a column wheel chronograph mechanism, the latter forming a rotary control member of the chronograph mechanism which has two functional states, namely "on" and "on". stopped". The watch movement described in this prior document therefore comprises a column wheel and a clutch rocker arranged to cooperate with the column wheel in order to start or stop the chronograph mechanism. The column wheel is driven in order to rotate in steps in one direction of rotation while the clutch rocker is reciprocated between two determined radial positions for which the chronograph mechanism is respectively in both states. aforementioned functionalities.
    More generally, whether chronograph watches or other timepieces, the known switching devices generally comprise a rotary control member consisting of a cam or a column wheel, and a body mobile switching device in the form of a cam follower of one type or another and more specifically constituted by a flip-flop or a lever. The disadvantage of such switching devices is that they all in principle require the use of prestressed springs to bias and hold the movable switching member against the cam or column wheel. Watch springs are bulky and delicate. They are subject to aging which gradually makes them lose effectiveness. This aging is also considerably accelerated by the shocks that may be experienced by the timepiece. On the other hand, by always returning the mobile switching member in abutment against the cam, the springs accelerate the wear of these two components. Finally, watch springs with their small dimensions are quite sensitive to tolerances, which is an additional problem.
    SUMMARY OF THE INVENTION
    An object of the present invention is to overcome the disadvantages of the prior art which have just been described. The invention achieves this goal by providing a timepiece according to the appended claim 1.
    According to the invention, the switching device comprises a movable switching member and a rotary control member respectively carrying a first magnetic structure and a second magnetic structure arranged to present between them a magnetic interaction that allows to do to switch on command the clock mechanism between a first state and a second state. One of the first and second magnetic structures comprises at least one first magnetic pole and the other of these two magnetic structures comprises at least one second magnetic pole and a third magnetic pole with opposite polarities and capable of interacting successively with the first magnetic pole. magnetic pole. The first and second magnetic structures are arranged so that, in a first angular position of the rotary control member, a first magnetic force, generated by a magnetic interaction between the first and second magnetic poles, acts on the switching member. in order to bring the latter into one of its two stable radial positions, and that, in a second angular position of the rotary control member, a second magnetic force, generated by a magnetic interaction between the first and third magnetic poles and thus in the opposite direction to the first magnetic force, acts on the switching member so as to recall the latter in the other of its two stable radial positions.
    Note that, especially in the case of a rocker pivoting about an axis parallel to the axis of rotation of the rotary control member, the two stable radial positions relate more specifically to an end portion of the switching member. In the context of a sliding switch member, it is the whole of this member which undergoes a translation movement in a plane substantially perpendicular to said axis of rotation between two stable radial positions of its center of mass.
    It will be understood that, thanks to these characteristics, it is not necessary to provide a spring to permanently recall the switching member in the direction of one of the two stable radial positions. Thus, it results in a reduction of mechanical stresses and a saving of mechanical energy. Such a magnetic system has the advantage of being a non-contact system capable of alternately exerting two forces with opposite directions on the switching member.
    BRIEF DESCRIPTION OF THE FIGURES
    Other features and advantages of the present invention will appear on reading the description which follows, given solely by way of non-limiting examples, and with reference to the accompanying drawings in which: FIGS. 1 and 2 are top plan views of a first embodiment of the invention which is constituted by a first particular stop device; FIG. 1 showing this device in the disengaged position while FIG. 2 shows it in its engaged position in which it blocks the ringing; fig. 3A is a partial perspective view of the stop device of FIGS. 1 and 2 showing the switching device in a configuration corresponding to the engaged position shown in FIG. 2; fig. 3B is a partial perspective view of the stop ring device of FIGS. 1 and 2 showing the switching device in a configuration corresponding to the disengaged position shown in FIG. 1; fig. 4 is a schematic plan view of a bistable cam secured to the control member of the first embodiment; figs. 5A, 5B and 5C are top plan views similar to FIGS. 1 and 2, which correspond to three successive snapshots showing the transition accompanying the automatic stop of the ring; fig. 6 is a top plan view of a second embodiment of the invention which is constituted by a second particular ring stop device; fig. 7 is a top plan view of a third embodiment of the invention which is constituted by a particular third ring stop device; fig. 8 is a perspective view of a timepiece comprising a rotating bezel and a locking mechanism of the telescope, and corresponding to a fourth embodiment of the invention; fig. 9 is a partial plan view showing more particularly the ratcheting mechanism of the bezel of the timepiece of FIG. 8; fig. 10 is a partial perspective view from the bottom side of the timepiece of FIG. 8, showing the rotating bezel and its locking mechanism; fig. 11A is a partial plan view from below showing the locking mechanism of the bezel of the timepiece of FIG. 8 in disengaged position; fig. 11B is a partial plan view from below showing the rotating bezel of the timepiece of FIG. 8 blocked by its locking mechanism.
    DETAILED DESCRIPTION OF EMBODIMENTS
    The accompanying figures 1 to 5 illustrate a first embodiment of the invention which is constituted by a timepiece comprising a striking mechanism that can switch between a first state where the ring is activated and a second state where the ringing is stopped, and further comprising a ring stop device provided for switching the striking mechanism between the activated state and the stopped state. This device therefore defines a switch.
    Figs. 1 to 5 are partial views that do not show the timepiece as a whole, but only the components of its stop ring device and the few elements of the striking mechanism that interact directly with the stop ring device. Figs. 1 and 2 are top plan views which show the ring stop device respectively in its disengaged position and in its engaged position. Now considering these figures in more detail, we can first see three mobiles that are part of the gear of the striking mechanism. It is a first mobile constituted by a wheel referenced 11, a second mobile constituted by a wheel 15 secured to a pinion 13, and finally by a third mobile which is constituted by a speed controller generally referenced 17 We can see in figs. 1 and 2 that the wheel 11 engraine with the pinion 13 so as to drive the second mobile, and that the wheel 15 of the second mobile engraine with a peripheral toothing (not referenced) of the regulator 17.
    It is known that timepieces ringing generally comprise a ring gear associated with a power source constituted by a cylinder in which is wound a motor spring called mainspring. If the barrel was simply connected to the bell, the progressive disarming of the spring would result in a slower rhythm of the melody as it was performed. This is the reason why we have the habit of correcting this phenomenon by integrating a regulator with the gear that controls the ring. Neither the barrel nor the striking mechanism itself are shown in the figures. However, it will be understood that the barrel is arranged to drive the ring gear by means of the wheel 11, and that the ring itself is arranged downstream of the regulator 17, so as to be driven via the latter.
    Referring always to the same figures, one can still see a switching device (referenced globally 1) which comprises a rotary control member 21 and a movable switching member 23. The switching member 23 comprises a rocker 25 pivotally mounted about a pivot axis. Flip-flop 25 has two arms extending from the pivot axis. A first arm of the rocker carries at its end a hook 29 and the second arm carries a bipolar magnet 31 whose magnetization direction is substantially parallel to the pivot plane of the rocker 25. The switching device further comprises a stop 28 arranged to cooperate with the second arm of the rocker so as to limit the stroke of the latter.
    Referring now to FIGS. 3A and 3B, one can see the rotary control member 21 shown in more detail. The control member of the illustrated embodiment is pivotally mounted about an axis of rotation 22. This member comprises a bipolar magnet 33 whose magnetization direction is perpendicular to the axis of rotation 22 of the control member , and which is substantially centered on this axis of rotation. The rotary control member also comprises a coaxial toothing 35 and a bistable cam 37 which may have for example the form illustrated in FIG. 4. The bistable cam shaped eight is further arranged to cooperate with a jumper spring 39. In accordance with the invention, the rotary control member 21 is arranged to be driven step-by-step in a direction of rotation. given so as to occupy successively a plurality of distinct angular positions around its axis of rotation. It will be understood that in the present example, the control member 21 is provided to occupy exactly two distinct stable positions which are separated from each other by an angular pitch of 180 °. The eight-shaped cam 37 and the jumper spring 39 are arranged in such a way that one of the two poles of the magnet 33 is always substantially opposite the magnet 31 when the rotating member of the magnet 33 control 21 is in one or other of its two stable positions.
    The switching device 1 shown in Figs. 1 and 2 further comprises a pusher actuating mechanism. This mechanism comprises a pusher 41, a control lever 43 and an intermediate mobile 45. The control lever 43 has a spout 47 which is provided to cooperate with a star 49 of the intermediate mobile 45. The intermediate mobile also has a concentric toothing 50 which engrains with the toothing 35 of the rotary control member. In the example illustrated, the star 49 has six branches. It will therefore be understood that the gear ratio between the teeth 50 and 35 is three in this example.
    According to the invention, the switching device is arranged so that a step-by-step rotation of the rotary control member 21 causes an alternating movement of the mobile switching member 23 substantially in a plane. perpendicular to the axis of rotation 22 of the control member, between a first stable radial position and a second stable radial position. Fig. 1 shows the rotary control member 21 in a first stable angular position in which the south pole of the magnet 33 is opposite the north pole of the magnet 31. In these conditions, the magnet 31 of the switching 23 is attracted towards the control member so that the switching member comes to rest in abutment against the stop 28, the movable switching member then being in its first stable radial position in which the hook 29 is clear of the regulator 17, so that the latter is free to rotate. Under these conditions, when a user of the timepiece actuates the pusher 41, the latter pushes the control lever 43 which pivots about its axis (not referenced) so as to pass to the position which is referenced 43 * and which is represented by broken lines in fig. 1. During the pivoting movement of the lever 43, the spout 47 (47 *) of the lever advances and pushes a branch of the star 49, so that the intermediate mobile 45 pivots about a sixth of a turn. By pivoting, the toothing 50 of the intermediate mobile drives the control member 21 which then makes a step of 180 °, so that the north pole of the magnet 33 finally occupies the position facing the north pole of the magnet 31 as in fig. 3B. The control member thus passes to its second stable angular position. Note that it is the interaction between the bistable cam 37 and the jumper spring 39 which ensures that the length of the steps made by the rotary control member 21 is precisely 180 °.
    In the configuration of FIG. 3B, the magnetic force generated by the interaction between the magnets 31 and 33 pushes the magnet 31 so that the rocker 25 pivots and moves away from the stop 28. This pivoting movement causes the hook 29 to lower against a external teeth of the regulator 17. When the user of the timepiece then releases the pressure on the pusher 41, the lever 43 and the pusher are both returned to their rest position by unrepresented springs. From this moment, the switching device is in the configuration illustrated in FIG. 2 where the switching member 23 is now in its second radial position in which the hook 29 is engaged in an external toothing of the regulator 17, so that the latter is immobilized and the ring gear as a whole is blocked.
    According to the first three embodiments of the invention which are the subject of the present description, the switching device 1 is also adapted to automatically switch the striking mechanism, so as to function as a bell duration limiter . This second mode of operation of the switching device I will now be described with reference to FIGS. 5A, 5B and 5C. As shown in these figures, the board of the wheel II carries a pin 51 arranged at the periphery close to the toothing. It will be understood that the pin 51 travels a circular path during each turn of the wheel 11. In addition, the star 49 of the intermediate mobile 45 is placed in the path of the pin. As we have seen, the wheel 11 is part of the ring gear that is a gear train multiplier. It can be seen in the figures that the gear ratio is quite high. Under these conditions, when the buzzer is actuated, the wheel 11 rotates relatively slowly.
    Top view, as shown in FIGS. 1,2, 5A, 5B and 5C, the wheel 11 rotates counterclockwise when the buzzer is operating. Fig. 5A illustrates the switching device at the moment when the pin 51 abuts against a branch of the star 49. The pin 51 then continues its way by pushing the branch of the star in front of it. In fig. 5B, the advance of the pin has rotated the star 49 about 1 / 12th of a turn. In fig. 5C, the pin overtook the star by completely pushing back the branch that stretched across its path. The star 49 has then rotated one-sixth of a turn, thereby advancing the rotary control member 21 by one step. The success of successive steps by the rotary control member has the effect of making the mechanism switch ring alternately between its two radial positions. In this case, the switching stops the ringing and at the same time immobilizes the gear of the striking mechanism. The wheel 11 is stopped in the position it occupies in FIG. 5C. It can therefore be understood that the buzzer stops automatically after a duration which corresponds approximately to the time required for the wheel 11 to perform a revolution after a first engagement of the buzzer via the pusher 41.
    FIG. 6 is a top plan view of a second embodiment of the invention which, like the first embodiment, is in the form of a stop ring device. This second model of stop ring device shares several characteristics with the first stop ring device described in the preceding pages. For ease of reading, the elements of the second stop ring device which have already been described in relation to the first stop ring device are designated in FIG. 6 by the same reference numbers.
    By comparing FIG. 6 in fig. 1: it is realized that the essential difference between the first and the second embodiment is the rotary control member which, in FIG. 6, is referenced globally 121. This rotary control member is arranged to perform steps each corresponding to a pivot angle π / Ν, with N> 1, so that the rotary control member and the magnetic structure that the door is made to successively occupy 2N distinct angular positions around their axis of rotation. In the example shown, N = 4. The control member 121 has the general shape of a disk pivoted at its center about an axis of rotation (not referenced). The disk carries 2N bipolar magnets (referenced each 133a or 133b), or eight magnets, which are evenly distributed along the periphery of the disk and which have their direction of magnetization oriented radially relative to the axis of rotation of the magnet. control member. Four magnets, referenced 133a, have their north pole facing outwards, and the other four magnets (referenced 133b) have their south pole turned outward. The rotary control member 121 also comprises a star with 2N branches 149 which is mounted under the disk carrying the magnets. According to the invention, the rotary control member 121 is arranged to be driven step-by-step in a given direction of rotation so as to successively occupy a plurality of distinct angular positions around its axis of rotation. In the present example, the control member 121 is provided to occupy exactly 2N distinct stable positions which are regularly spaced by angular steps of 45 °. The jumper spring 39 is arranged to cooperate with the eight-pointed star 149, and its two elements are arranged, relative to one another, so that one of the magnets 133a or 133b is still substantially in contact with each other. with respect to the magnet 31 of the switching member 23 when the rotary control member 121 is in any of its stable positions. In the configuration illustrated in FIG. 6, it is the south pole of one of the magnets 133b which is positioned facing the magnet 31. Under these conditions, the magnet 31 of the switching member 23 is attracted towards the control member 121 so that the switching member is immobilized in abutment against the stop 28 and the hook 29 is disengaged from the regulator 17, so that the latter is thus free to rotate.
    The switching device shown in FIG. 6 has a pusher actuation mechanism which is substantially identical to that of the first example. This mechanism comprises a pusher 41, a control lever 43 and an intermediate mobile 45. However, as shown in FIG. 6, the spout 47 of the control lever 43 is arranged to cooperate directly with the star 149 of the rotary control member 121. As the star 149 has eight branches, it is understood that a pressure on the pusher 41 has to effect of advancing the rotary control member by a step of 45 °. Once this step is accomplished, it is the north pole of one of the magnets 133a which will occupy the position vis-à-vis the north pole of the magnet 31. In this situation, the magnetic force generated by the interaction between the magnets 31 and 133a pushes the magnet 31 so that the rocker 25 pivots and moves away from the stop 28. This pivoting movement causes the hook 29 to be lowered against an external toothing of the regulator 17, which then stops this regulator .
    FIG. 7 is a top plan view of a third embodiment of the invention which, like the first two embodiments, is in the form of a stop ring device. This third model of stop ring device shares many features with the second embodiment. For ease of reading, the elements of the third stop device which have already been described in relation to the first or the second device are designated in FIG. 7 by the same reference numbers.
    Comparing FIG. 7 in fig. 6, it will be appreciated that the differences between the second and third examples of a stop ring device relate to the two magnetic structures respectively forming the rotary control member 221 and the movable switching member 223. Indeed, although the rotary control shown in fig. 7 comprises a star 149 which has eight branches as in the previous example, the control member 221 has only four bipolar magnets (each referenced 133b). The latter all have their direction of magnetization oriented radially with their south pole turned outwards (their north pole being turned towards the axis of rotation). By against the latch 125 of the movable switching member 223 carries two bipolar magnets (referenced 131a and 131b). These two magnets have their magnetization directions substantially parallel to each other, but in the opposite direction, so that the south pole of the magnet 131a and the north pole of the magnet 131b are turned towards the magnet. 221. Note that the two magnets 131a and 131b are preferably oriented radially relative to the axis of rotation of the control member and angularly offset by an angular pitch of the control member.
    According to the invention, the rotary control member 221 is arranged to be driven step-by-step in a given direction of rotation so as to successively occupy a plurality of distinct angular positions around its axis of rotation. It will be understood that in the present example, the control member 221 is provided to occupy exactly eight distinct stable positions which are regularly spaced by angular steps of 45 °. It will be further understood that the star 149 with eight branches and the jumper 39 are arranged relative to one another so that at each step, only one of the magnets 133b come to standstill substantially opposite either the south pole of the magnet 131a or the north pole of the magnet 131b. Referring always to FIG. 7, it can be seen that in the illustrated configuration, the south pole of a magnet 133b is positioned substantially vis-à-vis the north pole of the magnet 131b. Under these conditions, the magnet 131b of the switching member 223 is attracted towards the control member 221 so that the switching member bears against the stop 28, the movable switching member being then in a first stable position in which the hook 29 is clear of the regulator 17, so that the latter is free to rotate.
    The switching device shown in FIG. 7 comprises a pusher actuating mechanism which is identical to that shown in FIG. 6. Like the star 149 of fig. 7 also comprises eight branches, it is understood that a pressure on the pusher 41 has the effect of advancing the rotary control member by a pitch of 45 ° in the counterclockwise direction. Once this step was completed, the magnet 133b which was opposite the magnet 131b is spaced apart, but another magnet 133b is now positioned facing the south pole of the magnet 131a. In this situation, the magnetic force generated by the interaction between the magnets 133b and 131a pushes the arm of the rocker 125 so that the latter pivots and moves away from the stop 28. This pivoting movement causes the lowering of the hook 29 against an external toothing of the regulator 17, which stops it.
    The accompanying figures 8 to 11 illustrate a fourth embodiment of the invention which is constituted by a timepiece comprising a rotating bezel and a locking mechanism of the bezel. We know that diving watches are most often equipped with a rotating bezel. The main function of this telescope is to mark the position of the minute hand at the beginning of the dive. The diver can then at any time know how long he has been underwater by observing the distance traveled by the minute hand from the position indexed by the rotating bezel. In order to avoid any accidental modification of the angular position of the rotating bezel during dive, it is customary to equip the rotating bezel with a locking mechanism.
    Fig. 8 is a perspective view of a timepiece comprising a rotating bezel (referenced 300) and a locking mechanism of the bezel controlled by a push-button 341. It will be understood that, in accordance with the invention, the rotating bezel 300 is a watchmaker mechanism that can be in either the locked state or the unlocked state. In addition, the locking mechanism is an example of a switching device 301 arranged to switch the rotating bezel between a locked state and an unlocked state.
    [0029] Referring more particularly to FIG. 10, it can be seen that the rotating bezel 300 has a crenellated lower face and that the locking mechanism comprises a rotary control member which is formed by a shaft 350 mounted to pivot about an axis of rotation substantially perpendicular to the plane of the 300. The shaft 350 may for example be pivoted at both ends between the box of the watch (not shown) and a casing ring (not shown). The shaft 350 is further provided with a coaxial pinion 335 and a bipolar magnet 333. As will be seen in more detail below, the magnetization direction of the bipolar magnet 333 is perpendicular to the axis of the magnet. the shaft 350 and the magnet is substantially centered on this axis of rotation. The shaft 350 also comprises a non-cylindrical section which has two notches in diametrically opposed positions (a notch visible in FIG 10 is referenced 337). This non-cylindrical section is arranged to cooperate with a jumper spring 339. It plays the same role as the bistable cam 37 of the first embodiment.
    In the illustrated embodiment, the switching device also comprises two movable switching members (respectively referenced 323a and 323b) which are arranged symmetrically on either side of the shaft 350. Each of the movable switching members comprises a rocker (respectively referenced 325a and 325b) pivotally mounted about an axis (respectively referenced 327a and 327b). The latches each comprise two arms extending from the pivot axis. A first arm is extended by a spout (respectively referenced 329a and 329b) and the second arm carries a bipolar magnet (respectively referenced 331a and 331b). The magnetization direction of the magnets is substantially parallel to the pivot plane of the rocker. A more detailed examination (Figs 11A and 11B) further shows that the magnet 331a is oriented with its south pole facing the rotary control member and that the magnet 331b is oriented with its north pole facing the control organ.
    As already mentioned, the switching device 301 shown in FIGS. 8 to 11 also has a pusher actuating mechanism. This mechanism comprises a pusher 341, a rack 343 having a toothing with triangular teeth, a helical spring 345 and a jumper spring 347. As shown in the figures, the rack 343 is biased against the pinion 335 by the jumper spring 347. In these conditions, when the wearer of the watch presses on the pusher 341, the triangular teeth of the rack 343 cooperate with the toothing of the pinion 335 to rotate the rotary control member. When the wearer of the watch then releases its pressure on the pusher, the coil spring 345 pushes the rack 343 towards the pusher. The triangular shape of the teeth allows the rack to go back by sliding on the toothing of the pinion 335 without rotating the latter. It will thus be understood that, according to the invention, the rotary control member is arranged to be driven step-by-step in a given direction of rotation so as to successively occupy a plurality of distinct angular positions around its axis of rotation. . In the present example, the control member is provided to occupy exactly two distinct stable positions which are separated from each other by an angular pitch of 180 °. In addition, the non-cylindrical section of the shaft 350 and the jumper spring 339 are arranged in such a way that the magnetization direction of the magnet 333 is substantially perpendicular to the axis of symmetry between the two movable switching members. 323a and 323b when the control member is in one or other of its two stable angular positions.
    The operation of the switching device 301 will now be described with particular reference to FIGS. 11A and 11B. In accordance with the invention, the switching device is arranged in such a way that a step-by-step rotation of the rotary control member causes reciprocating movement of each of the two movable switching members 323a and 323b. substantially in a plane perpendicular to the shaft 350 between two radial positions. In the configuration of the switching device illustrated in FIG. 11A, the rotary control member is rotated so that the south pole of the magnet 333 (not visible in the figure) is oriented towards a first 323b of the two movable switching members. Under these conditions, the magnet 331 b of the switching member 323b is attracted towards the shaft 350 of the rotary control member, so that the switching member 323b comes to rest in a first position radial in which its beak 329b is clear of the slots formed on the underside of the rotating bezel 300. FIG. 11A shows the rotary control member rotated so that the south pole of the magnet 333 (not visible in the figure) is oriented towards the movable switching member 323b. The north pole of the magnet 333 is thus turned towards the other movable switching member 323a. As the magnet 331a of the switching member 323a is oriented with its south pole facing the rotary member, it is also attracted towards the shaft 350 of the rotary control member, so that the second switching member comes to rest in its first radial position in which the spout 329a is also disengaged slots formed on the underside of the rotating bezel 300. The rotating bezel is free to rotate. Under these conditions, when a user of the timepiece actuates the pusher 341, the latter pushes the rack 343, so that the triangular teeth of the latter drive the pinion 335 in rotation. As already indicated, the non-cylindrical section of the shaft 350 and the jumper spring 339 are arranged so that the control member advances in 180 ° angular increments. The actuation of the pusher 341 by the wearer of the watch therefore has the effect of making a half turn to the rotary control member, so that the orientation of the magnet 333 is reversed, the south pole becomes then being oriented in the direction of the movable switching member 323a and the north pole towards the switching member 323b. As the magnet 331a of the switching member 323a is oriented with its south pole opposite the rotary member, it is pushed back by the magnet of the rotary control member, so that the switching member 323a pivots and comes to rest in a second radial position in which the spout 329a cooperates with one of the slots formed on the underside of the rotating bezel 300 as shown in FIG. B. In addition, the magnet 331b of the switching member 323b is oriented with its north pole facing the rotary member, it is also pushed by the magnet of the rotary control member. The switching member 323b therefore also comes to be placed in a second radial position in which the spout 329b cooperates with one of the slots formed on the lower face of the rotating bezel 300 as illustrated in FIG. B. The rotating bezel 300 is then locked.
    Variants of this fourth embodiment correspond to arrangements with several bipolar magnets on the control member or on the switching member, similarly to the second and third embodiments.
    Note that in the various embodiments with control members comprising at least four magnetic poles interacting with the switching member, the control member can advantageously include, instead of a plurality of Bipolar magnets, a radial multipolar magnet. In a particular variant, the radial multipolar magnet, of circular or annular shape, comprises 2N external magnetic poles (that is to say, oriented towards the outside of this multipole magnet), N> 1, which have alternating polarities (That is to say alternately south and north), the axis of rotation of the control member passing through the center of the multipole magnet.
    Note that other horological applications are provided within the scope of the invention, including a lateral clutch device for momentarily transmitting a torque, or a switching device of a chronograph mechanism of the type described. previously in the section relating to the prior art, wherein the column wheel and the cam (s) associated (s) associated (s) are replaced by a switching device according to the invention. We notice
    权利要求:
    Claims (10)
    [1]
    ra that the present invention applies to embodiments with several switching members associated with the same control member. In the embodiments described, the control member is actuated by a user via an actuating device such as a pusher. Other actuation devices known to those skilled in the art can be envisaged. These actuating mechanisms may be actuated by a user or, in other embodiments, be automatically and in particular periodically actuated by the timepiece, that is to say by another mechanism of this piece of equipment. watchmaking that cooperates with the switched mechanism according to the invention. Finally, the invention has been described in the context of entirely mechanical timepieces. However, the invention can also be applied advantageously to timepieces having electromechanical parts. Thus, the actuating device of the control member may comprise an electromechanical motor. claims
    1. Timepiece comprising: - a clock mechanism that can switch between a first state and a second determined state; - a switching device (1; 301) arranged to switch the clock mechanism between said first state and said second state, said switching device comprising a movable switching member (23; 223; 323a, 323b) and a rotary member of control (21; 121; 221), the rotary control member being arranged to be driven step-by-step in a given rotational direction so as to successively occupy a plurality of distinct angular positions about an axis of rotation ( 22; 350), the switching device being arranged so that a step-by-step rotation of the rotary control member (21; 121; 221) in said direction of rotation causes reciprocating movement of the movable member switching device (23; 223; 323a, 323b) substantially in a plane perpendicular to said axis of rotation between two stable radial positions for at least a portion of said movable switching member, the latter being brought from a first to a second one of the two stable radial positions, so as to cause a first switching of the clock mechanism, when the rotary control member is placed in a first angular position among the plurality of distinct angular positions, and the movable switching member being brought back in the first of the two stable radial positions, so as to cause a second switching of the clock mechanism, when the rotary control member is placed in a second angular position among the plurality of distinct angular positions; characterized in that the movable switching member (23; 223; 323a, 323b) and the rotary control member (21; 121; 221) bear respectively a first magnetic structure (31; 131a, 131b; 331a, 331b); and a second magnetic structure (33; 133a, 133b; 133b; 333) arranged to have a magnetic interaction between them which makes it possible to switch the watch mechanism between said first and second states, one of the first and second second magnetic structures comprising at least one first magnetic pole and the other of these two magnetic structures comprising at least a second magnetic pole and a third magnetic pole with opposite polarities and capable of interacting successively with the first magnetic pole, the first and second magnetic structures being arranged so that, in the first angular position of the rotary control member, a first force m agnetic, generated by a magnetic interaction between the first and second magnetic poles, acts on the switching member so as to bring it into the second of said two stable radial positions, and in the second angular position of the rotary member for controlling, a second magnetic force, generated by a magnetic interaction between the first and third magnetic poles and opposite direction to the first magnetic force, acts on the switching member so as to recall the latter in the first of said two radial positions stable.
    [2]
    2. Timepiece according to claim 1, characterized in that said first magnetic pole is part of said first magnetic structure, while said second and third magnetic poles are part of said second magnetic structure.
    [3]
    3. Timepiece according to claim 2, characterized in that the rotary control member (21) is arranged to perform steps each corresponding to a pivoting of 180 °, so that the second magnetic structure is made to occupy alternatively two distinct angular positions around said axis of rotation, this second magnetic structure being formed by a bipolar magnet (33; 333) whose two poles constitute the second and third magnetic poles, said axis of rotation passing between these second and third magnetic poles .
    [4]
    4. Timepiece according to claim 2, characterized in that the rotary control member (121) is arranged to perform steps each corresponding to a pivot angle π / Ν, with N> 1, so that the second magnetic structure is made to successively occupy 2N distinct angular positions around said axis of rotation, this second magnetic structure having N second magnetic poles and N third magnetic poles oriented radially outwards and regularly distributed around said axis of rotation, the second and second the third magnetic poles being arranged alternately so that each second magnetic pole is interposed between two third magnetic poles.
    [5]
    5. Timepiece according to claim 4, characterized in that the second magnetic structure is constituted by a radial multipole magnet having 2N alternating external poles, said axis of rotation passing substantially through the center of the multipole magnet.
    [6]
    6. Timepiece according to claim 4, characterized in that the second magnetic structure comprises 2N bipolar magnets (133a, 133b) oriented radially and uniformly distributed around said axis of rotation, the bipolar magnets being oriented magnetically alternately in one direction. and in the other.
    [7]
    7. Timepiece according to any one of the preceding claims, characterized in that the first magnetic structure is constituted by a bipolar magnet (31; 331a, 331b), one of the poles constitutes said first magnetic pole.
    [8]
    8. Timepiece according to claim 1, characterized in that said first magnetic pole is part of said second magnetic structure belonging to the rotary control member (221), whereas said second and third magnetic poles having opposite polarities are part of said first magnetic structure belonging to the movable switching member (223).
    [9]
    9. Timepiece according to the claims, characterized in that the rotary control member (221) is arranged to perform steps each corresponding to a pivot angle π / Ν, with N> 1, so that the second magnetic structure is successively occupied 2N distinct angular positions around said axis of rotation; in that said second and third magnetic poles are arranged on the movable switching member (223) at the periphery of the rotary control member (221) and, seen from said axis of rotation of the control member, they are angularly spaced about π / Ν; and in that the second magnetic structure comprises N bipolar magnets (133b) oriented radially in the same direction and regularly distributed around said axis of rotation.
    [10]
    Timepiece according to claim 8 or 9, characterized in that the first magnetic structure is constituted by a pair of bipolar magnets (131a, 131b) arranged substantially radially relative to said axis of rotation of the control member and with their inverted polarities.
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    同族专利:
    公开号 | 公开日
    CH712642A2|2018-01-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2020-09-15| AZW| Rejection (application)|
    优先权:
    申请号 | 申请日 | 专利标题
    CH00841/16A|CH712642A2|2016-07-01|2016-07-01|Timepiece comprising a switching device of a clock mechanism.|
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