• 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 present invention relates to a bidirectional clutch device with a unidirectional dynamometric clutch for a timepiece. It comprises a rocker (4) pivoting about a first axis (A) fixed and acting on a movable element of the timepiece, for example minute hand or hours, date, moon phases etc.. The rocker (4) is provided with a sensing nose resting, under the action of a spring, against the periphery of a coarse cam (1) frictionally mounted on a second axis (2) rotating parallel to the first axis (A). This second axis (2) is provided with a pinion (21) intended to mesh with a manual control member and / or a wheel of the timepiece and a connection to the movement of the timepiece by lanterning. The connection to the clockwork movement by lanterning is a toothed wheel (3) frictionally mounted on said second axis (2) allowing the manual control member to rotate the second axis (2) in two directions rotation to correct the relative position of the snail cam (1) relative to the position of said movable member.
    公开号:CH711768A2
    申请号:CH01632/15
    申请日:2015-11-10
    公开日:2017-05-15
    发明作者:Carlhan Sébastien；Bugnon Alexandre
    申请人:Impulsion Sa；
    IPC主号:
    专利说明:

    Description
    TECHNICAL FIELD OF THE INVENTION
    The invention relates to a bidirectional clutch device unidirectional torque clutch for a timepiece comprising a pivoting rocker around a first fixed axis acting on a movable member of the timepiece, said rocker being provided of a probe nose by which said rocker is supported by a spring against the periphery of a snail cam.
    The lantemage is a kinematic link friction between two rotating elements, for example an axis and a toothed wheel, obtained in different ways.
    STATE OF THE PRIOR ART
    The use of such devices comprising a snail cam driven in rotation by an axis with a pinion in combination with a rocker which is supported with a probe nose against the side surface of the snail cam is frequently used in the rooms. watchmaking. When the snail cam rotates in so-called natural direction of rotation, the probe nose follows the lateral surface of the cam and when it exceeds the point farthest from the axis of rotation of the cam the probe tip falls at the point of the lateral surface of the cam closest to the axis of rotation and causes the instantaneous displacement from one position to another of a movable element of the timepiece, for example the minute hand, hours, change of date, moon phases etc. The time for the snail cam to make a complete turn in the direction of natural rotation depends on the element on which the rocker acts when the feeler tip falls from the highest point to the lowest point. This can be a minute an hour 24 hours etc. When it is desired to make a correction of the position of the element on which the rocker acts with respect to the snail cam, it is possible to act on the pinion of the second axis by the manual control member. Two cases occur either the cam rotates in the direction of natural rotation at a speed greater than that imparted to the snail cam by the toothed wheel by making as many full turns as necessary to obtain the desired correction or in the so-called antinaturel direction , that is to say in the opposite direction to the direction of natural rotation. In the second case, depending on the position of the probe nose on the side surface of the snail cam when the rotation in the antinaturel direction is initiated, this rotation can not be greater than about 360 ° because at one time the probe nose will come abut against the wall of the lateral surface between the point farthest from the center of the snail cam and the point closest to the center of the snail cam. In this case, if we have not obtained the desired correction, we must start again in the direction of natural rotation or we must find a way to move the probe tip away from the closest point to the center of the snail cam or by moving the snail cam is by acting on the rocker. Both methods require the establishment of an additional special device to perform the disengagement of the probe nose and the snail cam. In addition, when the probe nose abuts against said wall of the lateral surface of the snail cam, the device locks and if the user is not attentive and forces the rotation in the antinaturel rotation direction, it risks damaging or even destroy the device.
    The device of the invention provides a simple solution to avoid in the first place to damage or destroy the device by providing a dynamometric release. According to two alternative embodiments after the dynamometric disengagement, the user can continue to turn in the antinormal rotation direction to complete the correction.
    STATEMENT OF THE INVENTION
    The device according to the invention is characterized in that said snail cam is frictionally mounted on a second rotary axis parallel to the first axis, said second axis being provided with a pinion for meshing with a control member. manual and / or a wheel of the timepiece and a connection to the movement of the timepiece by lantemage, that said connection to the clockwork movement by lantemage is a toothed wheel frictionally mounted on said second axis allowing the manual control member rotates said second axis in both directions of rotation to correct the relative position of the snail cam relative to the position of said movable member.
    According to an alternative embodiment the device is characterized in that said snail cam is mounted to rotate on a support comprising at least one but preferably two diametrically opposite pawls Breguet external teeth coming from a room with said support, that the said support comprises at least one indexing element collaborating with the snail cam to make said support and said snail cam integral in rotation, that said support is mounted to friction on the second axis, that said support is arranged to the interior of an internal gear Breguet meshing with the pawls and that said internal gear Breguet gear is mounted integral in rotation on the second axis.
    [0007] Finally, according to another variant embodiment, the device is characterized in that said snub cam is rotatably mounted on a support mounted frictionally on the second axis and comprises at least one indexing element collaborating with the snail cam to make said support and said snail cam integral in rotation, that said support is disposed within an internal Breguet gear wheel mounted to rotate with the second axis, that at least one ratchet, but preferably two diametrically opposed outer Breguet gear ratchets meshing with the toothing of said internal Breguet gear wheel and are mounted by male ball joints in corresponding female heads of said carrier.
    The advantage of the present invention providing three alternative embodiments is that one creates by the design of the device a dynamometric disengagement when the cam rotates in the antinaturel direction of rotation and that the probe tip arrives on the point the closer to the center of the snail cam as will be explained in the following description.
    BRIEF DESCRIPTION OF THE FIGURES
    The invention will be described in more detail with the aid of the accompanying figures.
    Fig. 1 is a top view and in perspective of a first embodiment variant;
    Fig. 2 is a bottom and perspective view of the device of FIG. 1;
    Fig. 3 is a top view and partly exploded perspective of a second embodiment;
    Fig. 4 is a bottom and perspective view of the device of FIG. 3;
    Fig. 5 is a top view and partly exploded perspective of a third embodiment;
    Fig. 6 is a bottom and perspective view of the device of FIG. 5.
    DETAILED DESCRIPTION OF EMBODIMENTS
    In the following three examples of embodiment, the inventors have chosen for kinematic links to a friction arm-arming but any other lantern can be used without departing from the spirit of the invention.
    In figs. 1 and 2 a lanterned snailed cam 1 is mounted frictionally fat on the upper part of an axis 2 provided with a pinion 21. On the axis 2 and below the pinion 21 is mounted to friction a gear 3 lanterned too. A rocker 4 is pivotally mounted by a hole 42 about a fixed axis A and parallel to the axis 2. A spring R (this spring is presented only in FIG 1 for simplification) acts on the rocker 4 by a stud 44 integral with the rocker so that a probe 41 of the flip-flop 4 remains in permanent contact with the side surface 11 of the snail cam 1. The lantern gear 3 is rotated by a wheel of the timepiece which meshes with the external toothing 32 of the toothed wheel 3. This rotation is transmitted by the axis 2 to the lanterned snail cam 1 in a direction of rotation said natural, that is to say according to the arrow F. During this rotation in the natural sense the probe nose 41 is in contact with the lateral surface 11 of the snail cam 1 and the rocker 4 pivots about the axis A as the probe nozzle passes from the point closest to the center from the lanterned snail cam 1 to the farthest point 12. When the probe nose 41 passes the point 12 furthest from the center of the lateral surface 11 of the snail cam 1, it falls on the point closest to the center of the coaxial cam and the rocker 4 acts on a movable element timepiece eg minute or hour hand, date change or moon phase etc.
    If it is desired to modify the relative position of the limestone cam 1 relative to said movable member by means of a manual control member, for example the winding stem of the watch part, said member acts on the pinion 21 of the axis 2 by rotating it. If the rotation of the pinion 21 and therefore of the axis 2 is in the direction of natural rotation, this faster rotation of the axis 2 and the snail cam 1 is possible without influencing the rotation of the toothed wheel 3 thanks to the greasy friction of the toothed wheel 3 on the axis 2.
    If, on the other hand, the user wishes to make the modification by driving the limestone cam 1 in the antinaturel rotation direction, the greasy friction of the toothed wheel 3 on the axis 2 allows this shaft, driven by its pinion 21, rotates in the antinatural direction without influencing the direction of rotation of the toothed wheel 3. But it is possible for the probe nose 41 of the rocker 4 to abut against the wall 43 situated on the lateral surface 11 just after the point 12 the most away from the center of the snail cam 1. In this case the greasy friction of the snail cam on the spindle 2 allows the spindle 2 to continue to rotate in the antinatural direction without damaging the device. In this case, if the desired correction is not performed, the user must rotate the snail cam in the direction of natural rotation until the desired correction is obtained.
    The device described above is a less expensive solution than the two that will follow because there are few parts to manufacture. On the other hand, it is necessary to have a good control of the lanterning of the coarse cam 1 and the toothed wheel 3 so that the shaft 2 can drive the snail cam 1 in both directions and be able to slide, that is to say to disengage the cam. beyond a certain couple.
    In figs. 3 and 4 a variant of execution a little more complicated is presented.
    A snub cam 110 is rotatably mounted on the upper part of an axis 120 provided with a pinion 121. On the axis 120 and below the pinion 121 is frictionally mounted a gear wheel 130 also lanternée. A latch 140 is pivotally mounted by a hole 142 about a fixed axis A and parallel to the axis 120. As for the previous device, a spring (not shown) acts on the latch 140 so that a probe tip 141 of the rocker 140 remains in permanent contact with the lateral surface 111 of the snail cam 110. Above the pinion 121 a toothed wheel 150 is integral in rotation with the axis 120. It is provided with an internal Breguet toothing 151. In this toothed wheel 150 is disposed a lanterned support 160 mounted to friction on the axis 120. Said support 160 is provided with at least one pawl, but preferably two pawls 161 arranged diametrically opposite and coming in one piece with the support 160. The pawls 161 are constituted by two arcuate arms whose free ends are provided with external Breguet teeth 162 and by construction are elastically pushed against the internal toothing 151 of the tooth wheel 150. The support 160 meshes with the external toothing 162 of its two pawls 161 with the internal toothing 151 of the toothed wheel 150. The coaxial cam 110 is integral in rotation with the support 160 by at least one pin 163, preferably two arranged, fixed or removable on the support 160 and collaborating with two holes 113 of the snail cam 110. The snail cam 110 may be rotatably connected to the support 160 by other means, for example screws, solders, male complementary elements and females assembled in check etc.
    Below the pinion 121 is frictionally mounted a lantern gear 130 driven in rotation by a gear of the timepiece which meshes with the external toothing 132 of the toothed wheel 130. The rotation in the natural sense is transmitted by the axis 120 to the gear wheel 150. The inner gear teeth Breguet 151 of the toothed gear 150 and outer 162 of the pawls 161 are engaged during the rotation in the natural direction F therefore the support 160 rotates with the wheel 150 during the rotation in the natural sense the probe nose 141 is in contact with the side surface 111 of the snail cam 110 and the rocker 140 pivots around the toothed shaft 150 as well as the snail cam 110 by means of the studs 163 which are engaged in the holes 113. of the axis A as the probe nozzle 141 passes from the point closest to the center of the lantern-shaped snub cam 110 to the furthest point 112. When the probe nose 141 exceeds the point 112 the farther from the center of the lateral surface of the snail cam 110 it falls on the point closest to the center of the snail cam and the rocker 140 acts on a movable element of the timepiece, for example minute or hour hand , change of date or moon phase etc.
    If it is desired to modify the relative position of the snail cam 110 with respect to said movable member by means of a manual control member, for example the winding stem of the timepiece, said member acts on the pinion 121 of the axis 120 by rotating it. If the rotation of the pinion 121 and therefore of the axis 120 and the wheel 150 is in the direction of natural rotation, this faster rotation of the axis 120 is transmitted to the snail cam 110 by the support 160 which meshes with the wheel 150. This faster rotation has no influence on the rotation of the gearwheel 130 through the greasy friction of the gearwheel 130 on the axis 120.
    If on the other hand the user wishes to operate the modification by driving the snail cam 110 in the antinaturel rotation direction, the greasy friction of the toothed wheel 130 on the axis 120 allows this shaft, driven by its pinion 121, rotates in the antinatural direction without influencing the direction of rotation of the toothed wheel 130. The toothed wheel 150 integral with the axis 120 will rotate in this antinaturel direction. The support 160 with the snail cam 120 will also rotate in the antinatural direction driven by the axis 120. But it is possible that the probe tip 141 of the rocker 140 abuts against the wall 143 located on the lateral surface 111 before obtaining In this case the snail cam 110 and the support 160 thanks to the lantern of the support 160 will be stopped while the toothed wheel 150 fixed on the axis 120 will continue the rotation in the antinaturel direction because its Breguet toothing 151 will slide on Breguet teeth 162 pawls 161 avoiding damaging the device. If, in the meantime, the desired correction is not obtained, the user must turn the cam in the direction of natural rotation until the desired modification is obtained. Alternatively, it is possible to provide the toothed wheel 150 with external toothing 152, as shown in FIGS. 3 and 4, which when the sensing nose 141 abuts against the wall 143 meshing with a wheel of the timepiece which will turn in the antinaturel direction to continue the correction of the position of the movable element, which will allow make a correction in the direction of unnatural rotation on minutes, hours, date etc.
    This is an execution more expensive than that of FIGS. 1 and 2 but it allows the transmission of higher pairs. It is also important that the design and construction of the pawls 161 are carried out carefully because they must be sufficiently elastically resilient to unclip in one direction and sufficiently robust to be driven by said gear 150 in the other direction without breaking.
    In figs. 5 and 6 an alternative embodiment allowing the transmission of larger couples is proposed. The only difference with respect to the embodiment variant of FIGS. 3 and 4 is the design of the lantern bracket and ratchets.
    A coaxial cam 210 is mounted free to rotate on the upper part of an axis 220 provided with a pinion 221. On the axis 220 and below the pinion 221 is frictionally mounted a gearwheel 230 lanternée as well. A rocker 240 is pivotally mounted by a hole 242 about a fixed axis A and parallel to the axis 220. As for the previous device a spring acts on the rocker 240 so that a probe 241 of the rocker 240 remains in permanent contact with the side surface 211 of the snail cam 210. Above the pinion 221 a toothed wheel 250 is rotationally integral with the shaft 220. It is provided with an internal Breguet toothing 251. In this toothed wheel 250 is disposed a lanterned support 260 mounted fat friction on the axis 220. Said support 260 is provided with at least one pawl 261, but preferably two pawls 261 arranged diametrically opposed. The pawls 261 are constituted by two arcuate arms whose free ends are provided with an external Breguet toothing 262 and by construction are elastically pushed against the internal toothing 251 of the toothed wheel 250. The support 260 meshes with the external toothing 262 of two pawls with the internal teeth 251 of the toothed wheel 250. The pawls 261 each consist of an arched body 264, one end of which is provided with a male ball 265 intended to fit in a female socket 266 of the support 260. A Breguet toothing 262 of the body 264 meshes with the internal Breguet toothing 251 of the toothed wheel 250.
    权利要求:
    Claims (6)
    [1]
    1. bidirectional clutch device with a unidirectional dynamometric clutch for a timepiece comprising a rocker pivoting about a first fixed axis and acting on a movable member of the timepiece, said rocker being provided with a probe nose by which said rocker is supported, under the action of a spring, against the periphery of a snail cam, characterized in that said snail cam is mounted to friction on a second rotary axis parallel to the first axis, said second axis being provided with a pinion intended to mesh with a manual control member and / or a wheel of the timepiece and a connection to the movement of the timepiece by lanternage, that said connection to the watch movement by lanternage is a toothed wheel frictionally mounted on said second axis allowing the manual control member to rotate said second axis in both directions rotation to correct the relative position of the snail cam relative to the position of said movable member.
    [2]
    2. Gear device according to claim 1, characterized in that said snail cam is rotatably mounted on a support comprising at least one but preferably two diametrically opposite pawls with external Breguet teeth coming from a part with said support. , said support comprises at least one indexing element collaborating with the snail cam to make said support and said snail cam integral in rotation, that said support is mounted to friction on the second axis, that said support is arranged at the interior of an internal gear Breguet meshing with the pawls and that said internal gear Breguet gear is mounted integral in rotation on the second axis.
    [3]
    3. Device according to claim 1, characterized in that said snail cam is mounted to rotate on a support frictionally mounted on the second axis and comprises at least one indexing element collaborating with the snail cam to make said support and said limestone cam integral in rotation, that said support is disposed inside an internal Breguet gear wheel mounted to rotate with the second axis, that at least one pawl, but preferably two pawls with external Breguet teeth diametrically opposed meshes with the toothing of said inner gear Breguet and are mounted by male ball joints in corresponding female ball joints of said support.
    [4]
    4. Device according to claim 2 or 3, characterized in that said inner gear Breguet is also provided with an external toothing for meshing with an element of said timepiece acting on the position of said movable member after the dynamometric disengagement of the device.
    [5]
    5. Device according to one of claims 2 to 4, characterized in that said indexing element is a fixed pin or removable support collaborating with a hole of the snail cam.
    [6]
    6. Timepiece provided with a device according to one of the preceding claims for moving a display element or a mobile instantaneously or retrograde.
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    同族专利:
    公开号 | 公开日
    CH711768B1|2020-04-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2019-02-28| NV| New agent|Representative=s name: OMNIS-IP SA, CH |
    2019-02-28| PUE| Assignment|Owner name: STAR HLD SA, CH Free format text: FORMER OWNER: IMPULSION SA, CH |
    优先权:
    申请号 | 申请日 | 专利标题
    CH01632/15A|CH711768B1|2015-11-10|2015-11-10|Bidirectional clutch device with unidirectional dynamometric clutch for a timepiece.|CH01632/15A| CH711768B1|2015-11-10|2015-11-10|Bidirectional clutch device with unidirectional dynamometric clutch for a timepiece.|
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