EP2137578A2 - Organe moteur avec ressort helicoidal - Google Patents
Organe moteur avec ressort helicoidalInfo
- Publication number
- EP2137578A2 EP2137578A2 EP07734047A EP07734047A EP2137578A2 EP 2137578 A2 EP2137578 A2 EP 2137578A2 EP 07734047 A EP07734047 A EP 07734047A EP 07734047 A EP07734047 A EP 07734047A EP 2137578 A2 EP2137578 A2 EP 2137578A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- springs
- member according
- drive
- timepiece
- wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B1/00—Driving mechanisms
- G04B1/10—Driving mechanisms with mainspring
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B23/00—Arrangements producing acoustic signals at preselected times
- G04B23/02—Alarm clocks
- G04B23/023—Driving, e.g. by springs or common drive with the clockwork; gears; escapements
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
Definitions
- the present invention relates to a motor member adapted to be integrated into a timepiece.
- the object of the present invention is to reverse the prejudice in this field that a helical spring can not be used as a driving member in mechanical timepieces and to allow the realization of such a motor member having at least one coil spring.
- Another object of the present invention is to provide a regulating member cooperating with said drive member having a helical spring to allow the integration of a such a motor member in the context of several applications including a mechanical watch.
- the present invention thus relates to a motor unit comprising the features set forth in claim 1. Further advantages emerge from the features expressed in the dependent claims and from the description which sets forth the invention in more detail with the help of drawings.
- this motor member can be integrated into mechanical timepieces, this in several applications as will be apparent in detail from the description below.
- this motor member can cooperate with a regulating member specifically adapted to a coil spring and the concrete application in question to allow controlled and optimal discharge of said springs.
- Figure 1 schematically illustrates the principle of a drive member according to the present invention, a transmission train being connected to said drive member.
- Figure 2 is a schematic view of an embodiment of a regulating member cooperating with said motor member.
- FIG. 1 An embodiment of a motor unit 1 according to the present invention is shown, by way of example, in FIG. 1.
- This motor unit 1 comprises at least one helical spring 1.1 working in compression or in traction along its length. longitudinal axis.
- the springs work in compression.
- the drive member comprises two helical springs 1.1a, 1.1b placed next to each other, but there could be only one spring; preferably, such a motor member 1 comprises four coil springs.
- One end of said coil springs is fixed to the frame, for example to a bridge or to the frame of the watch, the timepiece to be equipped with the drive member.
- the other end of said helical springs is free, a drive means 1.3 being attached to this end.
- This drive means 1.3 is placed so as to be able to translate parallel to said longitudinal axis of the helical springs as a function of the movement of the free ends of said springs 1.1 during unloading.
- the motor member 1 preferably comprises at least one guide element for stabilizing the translational movement of each spring 1.1 respectively of the drive means 1.3.
- a rod could be housed for this purpose within each helical spring, the latter being thereby guided in its axial movement.
- Other guide elements, in particular outside each spring respectively in cooperation with said drive means are also conceivable.
- This drive means 1.3 which follows the translation of the free ends of said helical springs 1.1 during unloading is engaged with a drive gear 1.4 so as to cause by its translation a rotation of the pinion.
- the energy from said helical springs 1.1 in the form of a linear force can be transmitted to this drive gear 1.4 respectively to said timepiece in the form of a torque.
- the drive means is provided by a rack 1.3 attached to the free end of said springs.
- This rack 1.3 is placed on the springs 1.1 so that its longitudinal axis is parallel to the longitudinal axis of said springs.
- the motor member may further comprise a wall 1.2 fixed at the end of the free ends of said springs to facilitate the mounting of said means 1.3 on said free end.
- a wall 1.2 can also be used for guidance in cooperation with said guide elements, for example by having a bore adapted to where said guide rod passes.
- said drive means 1.3 could also consist of several racks each cooperating with a corresponding drive sprocket 1.4.
- the drive means 1.3 normally comprises a toothing placed on one of its longitudinal sides and said drive gear meshes with its toothing in the toothing on the drive means 1.3.
- the rack 1.3 and the pinion 1.4 may also each comprise at least two different sets of teeth allowing a reduction in the torque transmitted during the unloading of said springs.
- the rack 1.3 may for example have two teeth along its longitudinal axis, as shown schematically in Figure 1, each toothing being placed at a different height on the rack 1.3 and therefore at a distance defined with respect to the axis of the drive pinion 1.4.
- the latter also comprises two teeth arranged on two corresponding levels on the pinion 1.4, each toothing having a different radius, as is apparent from FIG. 1. In this way, it is firstly the toothing having the radius.
- the toothing on the drive means 1.3 in particular the rack, can be inclined with respect to its longitudinal axis so as to have, in the case of coil springs working in compression, a distance by relative to the axis of the drive gear 1.4 less towards the free end of the springs 1.1 and a greater distance to the other end of the rack.
- the portion of the drive gear 1.4 meshing with such a rack 1.3 will not be in this case circular, but have the outer shape of a spiral, the radius is at each location on its circumference adapted to the shape of the rack. This is possible because the displacement of the free ends of the springs 1.1 remains relatively small, the pinion 1.4 actually effecting only one revolution.
- the drive gear 1.4 transmits the torque to a transmission train 2 normally consisting of several wheels or pinions 2.1, 2.2, 2.3, 2.4, 2.5 whose teeth are also adapted to the specific application, for example by allowing a reduction as desired.
- the transmission train 2 is then connected one way or another kinematically with the parts of the timepiece to which the energy must be transmitted.
- a motor unit 1 can cooperate with a regulating member 3 controlling the unloading of said springs 1.1.
- the concrete arrangement of this regulating member 3 also depends on the concrete application for which the drive member 1 is used.
- the regulating member 3 must comprise a control means for blocking and releasing the helical springs 1.1 in order to respectively prevent their unloading.
- the regulating member 3 thus controls the moment at which the energy is released and can therefore have a more or less complex structure according to the needs of the application.
- it may comprise at least one star 3.1 kinematically linked to said drive pinion 1.4 and a control lever 3.2 for releasing or blocking the rotation of said star 3.1, as illustrated by way of example in FIG. Figure 2.
- the lever 3.2 is controlled by the timepiece to which the energy of the springs 1.1 must be transmitted.
- Other equivalent systems are also conceivable.
- several possibilities of arrangement of the parts mentioned above, in particular of the transmission train 2 and of the regulating member 3, will be described in detail in the context of the description of some concrete applications of a motor unit 1 according to the present invention.
- a relatively simple application for such a motor unit may consist of the supply of energy to a ring of a minute repeater or an alarm included in a timepiece, especially in a watch.
- This case is not explicitly illustrated in the figures because it is quite clear from the explanations above. Indeed, it is sufficient in this case, on the one hand, to connect the last wheel of the transmission train 2 to said ringing so that the discharge of the coil springs 1.1 causes the march of the minute repeater see the alarm clock, a such connection is the normal know-how of the skilled person.
- said star 3.1 is placed so as to mesh for example in a wheel adapted for this purpose of the transmission train 2 see in the drive pinion 1.4.
- This star 3.1 is normally blocked by the control lever 3.2 which meshes with its teeth, for example by being prestressed against the star 3.1 by a jumper.
- the lever 3.2 is also connected in a manner known to those skilled in the art to the movement of the watch respectively to the mechanism for triggering the ringing of the minute repeater or alarm clock, for example by means of a cam having a control finger acting on the lever 3.2, so that it releases the star 3.1 at the moment when the bell must start.
- This function is achieved by the controlled winding of even the barrels of the movement of the watch through the helical springs 1.1 kinematically connected to the ratchet wheels by said transmission train 2 and periodically actuated by said regulating member 3 which acts as a trigger.
- FIG. 1 shows an arrangement of the driving member 1 and the transmission gear 2 adapted to this application.
- the motor member 1 may have the structure described above, for example for example having two toothed sections on the drive means 1.3 along its longitudinal axis.
- the transmission train 2 is connected, as described above, to the drive gear 1.4 and allows to transmit its movement to a ratchet wheel 4.2 provided for refitting a cylinder 4.1 of the watch.
- the gear train 2 has in this application preferably a movable wheel 2.4 so that the ratchet wheel 4.2 is in kinematic connection with the drive pinion 1.4 only when the coil springs 1.1 are activated.
- This type of mobile wheel 2.4 is widely used in the watch industry and therefore known to those skilled in the art, for which reason it will not be described in more detail here.
- the small space allowed for helical springs in a timepiece forces the drive means 1.3, in particular said rack, to have a displacement stroke of only a few millimeters.
- the transmission train therefore has the aid of a corresponding arrangement of the teeth of its wheels or sprockets 2.1, 2.2, 2.3, 2.4, 2.5 of a predefined multiplication ratio so that the starting stroke of a few millimeters of the rack 1.3 can raise the barrel 4.1 several turns.
- the same principle may apply if the timepiece has several barrels, in which case it is sufficient to provide a kinematic link by one or more transmission gear 2 adapted or equip the piece with several engine 1 each having a corresponding transmission train.
- This regulating member 3 cooperates with the driving member 1 so as to trigger periodically and is composed of four parts visible in Figure 2: said star 3.1 meshing with the transmission train 2 or alternatively directly with the drive pinion 1.4 of the driving member 1, said control lever 3.2 blocking or releasing the star 3.1 and thus the helical spring or springs 1.1, a control wheel 3.3 provided with a groove of substantially semicircular shape and a control ring 3.4 linked kinematically through a differential 4.3 cylinder 4.1 and ratchet wheel 4.2 of the watch.
- the lever 3.2 has on its end opposite the star a finger engaged in the groove of the control wheel 3.3.
- toothed section 3.3.1 On its outer circumference a toothed section 3.3.1, while the rest of its circumference is circular, without teeth, and has substantially the same radius as the toothed section 3.3.1 of the wheel 3.3.
- This toothed section 3.3.1 can mesh with a corresponding toothed section 3.4.1 disposed on the outer periphery of said control ring 3.4. It also has a toothing on its entire inner circumference which meshes with the differential 4.3 placed on the axis of the cylinder 4.1 respectively of the ratchet wheel 4.2.
- the differential 4.3 is kinematically connected, in a conventional manner, on the one hand to the cylinder 4.1 and on the other hand to the ratchet wheel 4.2 of the watch so that it follows both in their rotation, it is that is to say the rotation in one direction of the cylinder 4.1 when the spiral spring therein is discharged and the rotation in the other direction of the ratchet wheel 4.2 when the barrel is raised.
- the control ring 3.4 is in a position in which its toothed section 3.4.1 is just above the toothed section 3.3.1 of the control wheel 3.3, which corresponds to about 9 hours on a dial, this position not being illustrated in the figures.
- the watch is manually raised, which rotates the ratchet wheel 4.2 and thus the control ring 3.4, the latter in a clockwise direction of approximately 1.5 turns, so that located in a position where its toothed section 3.4.1 rests around 4 o'clock on the dial.
- the toothed section 3.4.1 of the control ring 3.4 rotates the control wheel 3.3 counter-clockwise as it passes the toothed section 3.3.1 of this wheel 3.3, so that its toothed section 3.3.1 is oriented slightly upwards after the passage of the last tooth on the toothed section 3.4.1 of the control ring 3.4.
- the spiral spring in the barrel is completely raised, the barrel can perform a predetermined maximum number of turns during unloading of the spiral spring.
- the coil springs 1.1 of the drive member 1 so that the watch is fully loaded.
- the normal movement of the movement of the watch can then begin, which causes through the rotation of the cylinder 4.1 the rotation, in the counterclockwise direction, of the control ring 3.4, to which this movement is transmitted via said differential 4.3 .
- the toothed section 3.4.1 of the control ring 3.4 comes into contact with the section. tooth 3.3.1 of the control wheel 3.3.
- the control ring 3.4 then rotates, when the unloading of the spiral spring continues, the control wheel 3.3 in the clockwise direction.
- the Helical springs 1.1 enter at this time and rotate, released now, through the rack 1.3, the drive pinion 1.4 and the transmission train 2 the ratchet wheel 4.2 cylinder 4.1, which raises the spiral spring that is housed there.
- the control ring 3.4 again rotates clockwise, driven by the differential 4.3 meshing with its internal toothing, until its toothed section 3.4.1 is approximately to a 9 o'clock position on a dial. This corresponds approximately to the beginning of the cooperation between the two toothed sections 3.3.1, 3.4.1, seen in the direction of counterclockwise rotation of the control ring, and defines a maximum winding torque of the spiral spring by the motor unit 1.
- control ring 3.4 rotates, during the temporary meshing of the two toothed sections 3.3.1, 3.4.1, the control wheel 3.3 again in the counter-clockwise direction, until the finger the control lever 3.2 abuts against the other end of said groove of the control wheel 3, which has the consequence that the control lever 3.2 again blocks the star 3.1 and the coil springs 1.1.
- the maximum torque of the spiral spring to which the coil springs of the motor unit 1 recharges it is reached.
- This procedure is repeated periodically, triggered and stopped each time at the end respectively of the beginning of the meshing of the toothed section 3.4.1 of the control ring 3.4 in the toothed section 3.3.1 of the control wheel 3.3, seen in the anticlockwise rotation direction of the control ring, until the coil springs 1.1 are discharged.
- This thus makes it possible to maintain the torque provided by the spiral spring housed in the barrel 4.1, always in a range defined by said predefined minimum torque provided by the spiral spring and available during operation of the winding of the spiral spring by the motor member 1 and said maximum winding torque of the spiral spring by the motor unit 1.
- the toothed section 3.4.1 of the control ring 3.4 disengages from the toothed section 3.3.1 of the control wheel 3.3 and the control ring 3.4 simply continues its rotation in the counterclockwise direction that it performs during the unloading of the spiral spring housed in the barrel 4.1 until the complete unloading of this spiral spring. .
- control ring 3.4 is then again in its initial position mentioned above where its toothed section 3.4.1 is about 9 o'clock on a dial, it being indeed blocked against any continuous rotation in the direction counter-clockwise by the non-toothed portion on the control wheel 3.3, which simultaneously achieves an automatic stop of the watch at that time.
- the system also allows, as this has already been mentioned above, that the spiral spring barrel 4.1 is manually raised beyond said maximum winding of the spiral spring by the drive member 1, and in this case the toothed section 3.4.1 of the The control ring 3.4 disengages from the toothed section 3.3.1 of the control wheel 3.3, the control ring 3.4 thus continuing to rotate in the clockwise direction until its toothed section is around 4 o'clock on a dial, as described above.
- all that has been said here in relation to a cylinder is also valid if the timepiece has several barrels each with a corresponding spiral spring or trigger for at least two barrels.
- the control lever 3.2 and the control wheel 3.3 could in principle be replaced by any other trigger system to perform the same function as described above.
- the drive member 1 respectively its helical springs 1.1 are kinematically connected to a winding mechanism in order to be able to wind the coil springs 1.1 when they arrive at the end of the race.
- a winding mechanism in order to be able to wind the coil springs 1.1 when they arrive at the end of the race.
- One possibility for doing this is to provide a toothed wheel attached to the winding stem. This wheel is linked to a gear train which at its end has a moving wheel.
- said moving wheel meshes with the transmission train 2 and thus goes up via the drive gear 1.4 and the rack 1.3 the coil springs 1.1.
- a rotation of the winding stem in the other direction conventionally causes the winding of the spiral spring housed in the cylinder 4.1 of the watch.
- the winding of the coil springs 1.1 could also be done directly, that is to say without passing through said transmission train 2, for example by means of a moving wheel directly engaged on the rack 1.3 of the motor unit 1.
- the motor unit 1 is used in these cases to operate or reload another mechanism, for example in the second case reloading the spiral spring of the barrel. It is therefore not important that the torque delivered by the coil springs 1.1 is not constant, since it serves only to keep the torque delivered by the spiral spring in a predefined range.
- the motor member 1 is in these cases used as a kind of secondary energy source.
- the motor unit 1 As has been mentioned above, it is nevertheless possible to compensate for the linearity of the torque delivered by the helical springs 1.1 respectively the motor unit 1 by giving a particular shape to the drive means 1.3 and to the drive gear 1.4, which could in this case in particular be in the form of a hairspring having a variable lever arm along its circumference so as to compensate for the loss of force of the coil spring to which it is connected.
- the motor member 1 arranged in this way thus delivers a constant torque, it is therefore theoretically possible to use it also as a primary source of energy, that is to say to establish a kinetic connection between such a motor member 1 and the wheel of (large) medium or the exhaust of a timepiece.
- This link can in principle be made by a large number of different possibilities that can not all be described here. Nevertheless, it can be seen that the motor unit 1 according to the present invention can in this constellation be used to operate a watch directly, which opens the door to many other applications of such a motor unit.
- a motor member 1 in particular in cooperation with a corresponding regulating member 3 and adapted to the intended application provides a number of advantages.
- this device makes it possible to use helical springs in timepieces, which was previously avoided in the watchmaking field.
- this use of a coil spring, particularly an oversized spring can be performed to bring power to another mechanism of the timepiece or to directly drive the timepiece, the latter including a correction of the linearity of the force delivered by a helical spring in the motor unit.
- a regulating member may favorably cooperate as a trigger with this motor member which is thereby able to provide power at the desired time and with a desired periodicity.
- this drive member can for example find a use to remount the spiral spring of a cylinder of a watch, to raise a ring of an alarm clock or a minute repeater, to put together any feature of a shows that needs energy and must be triggered, or even to deliver the primary energy for the running of the watch in direct cooperation with its exhaust.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Electromechanical Clocks (AREA)
- Springs (AREA)
- Transmission Devices (AREA)
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2007/000714 WO2008114071A2 (fr) | 2007-03-22 | 2007-03-22 | Organe moteur avec ressort helicoidal |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2137578A2 true EP2137578A2 (fr) | 2009-12-30 |
EP2137578B1 EP2137578B1 (fr) | 2011-05-11 |
Family
ID=39766547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07734047A Not-in-force EP2137578B1 (fr) | 2007-03-22 | 2007-03-22 | Organe moteur avec ressort helicoidal |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2137578B1 (fr) |
AT (1) | ATE509303T1 (fr) |
WO (1) | WO2008114071A2 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3483660A1 (fr) * | 2017-11-10 | 2019-05-15 | Patek Philippe SA Genève | Organe moteur d'horlogerie |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2515185B1 (fr) * | 2011-04-21 | 2019-06-12 | Manufacture et fabrique de montres et chronomètres Ulysse Nardin Le Locle SA | Moteur à moment de force constant |
EP2560054B1 (fr) | 2011-08-17 | 2017-11-15 | ETA SA Manufacture Horlogère Suisse | Remontage d'un mécanisme d'horlogerie par pression ou traction |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1402863U (fr) * | ||||
FR986403A (fr) * | 1946-03-01 | 1951-07-31 | United States Time Corp | Perfectionnements aux pièces d'horlogerie et autres instruments |
US4174607A (en) * | 1978-12-13 | 1979-11-20 | Timex Corporation | Mechanism for self-wind watches |
-
2007
- 2007-03-22 AT AT07734047T patent/ATE509303T1/de not_active IP Right Cessation
- 2007-03-22 EP EP07734047A patent/EP2137578B1/fr not_active Not-in-force
- 2007-03-22 WO PCT/IB2007/000714 patent/WO2008114071A2/fr active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2008114071A3 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3483660A1 (fr) * | 2017-11-10 | 2019-05-15 | Patek Philippe SA Genève | Organe moteur d'horlogerie |
WO2019092664A1 (fr) * | 2017-11-10 | 2019-05-16 | Patek Philippe Sa Geneve | Organe moteur d'horlogerie. |
Also Published As
Publication number | Publication date |
---|---|
WO2008114071A3 (fr) | 2009-04-30 |
EP2137578B1 (fr) | 2011-05-11 |
ATE509303T1 (de) | 2011-05-15 |
WO2008114071A2 (fr) | 2008-09-25 |
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