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
  • G04B17/00—Mechanisms for stabilising frequency
  • G04B17/20—Compensation of mechanisms for stabilising frequency
  • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
  • G04B17/285—Tourbillons or carrousels

Definitions

• the invention relates to a TourbiUon, or a tourbillon module, according to the preamble of the independent claim.
• Movements with a TourbiUon are known from the prior art, which are generally of complex construction. This creates disadvantages in production and maintenance. In addition, there is no way to achieve a TourbiUon with a particularly flat structure.
• TourbiUon is mounted in front of a barrel. This structure is very complex in terms of assembly and maintenance and therefore expensive. In the event of a defect in particular, it is necessary to dismantle the entire movement in order to gain access to the TourbiUon. The TourbiUon is also only visible from the front.
• the object of the invention disclosed here is to show a TourbiUon, or a tourbillon module with a maintenance-friendly, simple structure and improved accuracy, which if necessary has a particularly low overall height of the tourbillon.
• the TourbiUon according to the invention preferably has a modular structure.
• the actual tourbillon mechanism, including all essential parts, are preferably combined in a tourbillon module, which has a standardized interface to the rest of the movement and can be detached from it in a simple manner.
• the TourbiUon preferably has a platform that is supported on one side (flying TourbiUon).
• a ball bearing (main bearing) is preferably used for the storage, the outer ring of this ball bearing also rotating with the platform of the tourbillon.
• the platform and the outer ring can be formed in one piece if necessary.
• the inner ring of the central bearing of the platform is fixed to a base and does not rotate. So that the bearing play can be easily adjusted, it is possible to design the inner and / or the outer ring in two parts.
• a balance is supported by an upper and a lower balance bearing. In certain embodiments, both balance bearings rotate with the platform. Alternatively, there is the option of arranging the lower balance bearing fixed on the side of the base. Depending on the design, this has an advantageous effect on the overall height.
• the tourbillon constructions known from the prior art generally have the disadvantage that it is not possible to adjust and maintain the tourbillon or the bearings of the tourbillon in the installed state. If a TourbiUon is to be serviced, the entire movement must usually be dismantled.
• the TourbiUon disclosed here has a structure that enables easy maintenance.
• the bearings are preferably arranged so that they can be easily checked, adjusted and serviced even when installed. So that both a lower bearing of the balance (balance bearing) and the main bearing of the platform of the tourbillon are freely accessible, the inner ring of the main bearing of the platform preferably has a diameter that is so large that the lower bearing of the balance (balance bearing) in it Mitte finds space and is accessible when needed, especially for maintenance purposes.
• a coaxial arrangement ensures that forces due to external shocks and impacts are dissipated particularly efficiently.
• a further advantage is that the balance bearings can be arranged far apart in a coaxial arrangement, so that the balance axis has a comparatively maximum length, whereby the reaction forces due to occurring moments are comparatively minimized.
• manufacturing tolerances generally have less influence.
• the invention enables very flat tourbillons to be built, the height of which is less than 5 mm and, if necessary, less than 4 mm.
• the means for mounting the tourbillon platform (for a ball bearing, the balls) are preferably arranged approximately at the level of the main level of the tourbillon platform.
• the tourbillon platform assigns a correspondingly large opening for this purpose.
• the outer ring of the main bearing of the platform is preferably integrated into the platform.
• the means for mounting the tourbillon platform come to lie approximately at the level of the base, the outer ring of the main bearing being stationary and the inner ring being arranged in a rotating manner.
• the balls of the main bearing are arranged approximately at the level of the platform or the base, it makes sense to arrange the lower bearing of the balance inside the main bearing coaxially on the fixed side (clockwork side). This further reduces the overall height if necessary.
• the lower bearing of the balance wheel and the main bearing of the platform of the tourbillon are preferably arranged essentially coaxially, since mechanical shocks and vibrations are thereby particularly well dissipated.
• an industrial warehouse can also be used.
• this increases the number of parts and, depending on the embodiment, the bearing play cannot be optimally adjusted.
• Finished bearings are preferably attached by pressing or gluing.
• Figure 1 shows a first embodiment of a tourbillon module in a plan view.
• FIG. 2 shows a section through the tourbillon module according to FIG. 1;
• FIG. 3 shows a second embodiment of a tourbillon module in a perspective view
• FIG. 4 shows a perspective view of the tourbillon module from FIG. 3 obliquely from below;
• FIG. 5 shows a sectional illustration through the tourbillon module according to FIG. 3.
• Figure 1 shows a first embodiment of a tourbillon 1 according to the invention in a plan view.
• the design of the Tourbillon 1 is a flying TourbiUon that is one-sided is stored.
• the TourbiUon 1 is designed as a tourbillon module 1, which is manufactured independently of the rest of the movement and then assembled.
• the tourbillon module 1 has a platform 2 which is mounted on a base 3 so as to be rotatable about an axis of rotation A.
• the platform 2 has an external toothing 8, via which the tourbillon module 1 is driven or the clockwork is inhibited.
• a balance 9 is rotatably arranged centrally on the platform 2 and is operatively connected to the inner end of a spiral spring 10.
• the balance wheel 9 is driven or inhibited via an escape wheel 11 and an anchor 12 (only partially visible).
• an anchor 12 On the platform 2, three supports 15 are arranged which hold a bridge 16.
• an upper balance bearing 18 In the middle of the bridge 16, an upper balance bearing 18 is arranged coaxially to the axis of rotation A.
• a control mechanism 17 is operatively connected to an outer region 4 of the spiral spring 10. The control mechanism 17 serves to fine-tune the accuracy of the tourbillon module 1 by influencing the effective length of the coil spring 10.
• An outer end 5 of the spiral spring 10 is fastened to the bridge 16 via a holder 6.
• the base 3 has openings 7 (fastening means) which are used to fasten the base 3 to a circuit board of a clockwork (not shown in more detail).
• Figure 2 shows a sectional view along the line DD.
• FIG. 2 shows a section along the line DD through the tourbillon module 1 from FIG. 1.
• a main bearing 20 serves to support the platform 2 of the tourbillon 1 relative to the base 3.
• An outer ring 21 of the main bearing 20 is rigidly connected to the platform 2 and rotates with it this one with.
• the outer ring 21 has a bell-shaped configuration with a continuous opening with a variable inner diameter with two pronounced diameter levels.
• the outer ring 24 is connected to the platform 2 via a press fit.
• the outer ring 24 is designed such that it serves as a holder for a lower balance bearing 19.
• the lower balance bearing 19 is arranged on the side of the platform 2 and rotates with it.
• An inner ring 22 is configured in two parts and consists of a fixed, first partial ring 23 and an adjustable, second partial ring 24, which is operatively connected to the first inner ring 23 via a thread 25 such that the bearing play is adjustable.
• This arrangement makes it possible to mount the main bearing 20 and to adjust the bearing play.
• Alternative embodiments, for example with a press fit, are possible.
• the balance 9 is fastened on a balance axis 13, which in turn is mounted rotatably about the axis of rotation A by means of a first, lower and a second, upper shock and vibration absorbing slide bearing 18, 19 (balance bearing).
• the lower slide bearing 19 is arranged slightly above the main bearing 20 here. In other embodiments, the main bearing 20 and the lower slide bearing 19 can be arranged at substantially the same height.
• a gearwheel 26 with internal teeth in the embodiment shown is operatively connected to the base 3 and centered with respect to the axis of rotation A.
• the internally toothed gear 26 serves to drive the escape wheel 11 via a pinion 27 (cf. FIG. 4).
• the base 3 and the gear 26 can be formed in one piece if necessary.
• FIG. 3 shows a further embodiment of a tourbillon module 1 in a perspective view obliquely from above.
• this tourbillon module 1 essentially corresponds to the embodiment from FIG. 1 from the front, it differs significantly in the structure of the main bearing.
• the embodiment shown here is designed so that it can be fastened from behind on a circuit board of a clockwork, the TourbiUon 1 being arranged in a suitable, continuous opening in the circuit board and visible from the front (dial side).
• the internally toothed gear 26 is arranged concentrically to the axis of rotation A and fastened to the base 3 by means of two screws 29.
• Other mounting options e.g. from the front, are possible.
• the numbering corresponds to Figures 1 and 2.
• FIG. 4 shows the tourbillon module 1 according to FIG. 3 in a perspective view obliquely from below.
• the base 3 here has a bearing opening 28 in which the second partial ring 24 of the main bearing 20 can be seen.
• the lower slide bearing 19 of the balance 9, or the balance axis 13 can be seen.
• an externally toothed gear (not shown) can also be used.
• the gear 26 can be integrated into the platform 3 if necessary.
• the base 3 which can affect the overall height of the tourbillon 1.
• the thickness t is essentially given only by the mechanical strength or manufacturability required for operation. This has a positive effect on a low overall height.
• FIG. 5 shows the embodiment of the tourbillon 1 according to Figures 3 and 4 in a perspective sectional view.
• the main bearing 20 and the lower balance bearing 19 of the balance 9 and the balance axis 13 are located essentially at the same height in a coaxial arrangement. voltage.
• the lower balance bearing 19 is operatively connected to the base 3 and therefore does not rotate with the platform 2.
• the outer ring 21 of the main bearing 20 is integrated in the platform 2. This has the advantage that the number of required and coordinated parts is reduced.
• This embodiment is suitable for tourbillons of low overall height, which are used in flat calibres or mounted from the front.
• Balls 28 can be seen between the outer and inner rings 21, 22 of the main bearing 20. Due to the adjustable structure of the main bearing 20, by means of a first and a second partial ring 23, 24, which are adjustably operatively connected via a thread 25, the bearing play of the main bearing 20 is set.
• the axis 13 of the balance 9 is mounted in an upper balance bearing 18 and in a lower balance bearing 19.
• the balance bearings 18, 19 are shock and vibration absorbing plain bearings.
• the upper balance bearing 18 is fastened to a bridge 16, which in turn is fastened to supports 15 by means of screws 14.
• the supports 1 5 are attached to the platform 2.
• the embodiment shown is a press connection. Alternatively, another form of connection can be selected.
• the lower balance bearing 19 is fixed, therefore outside of the rotatably arranged platform 2.
• the lower balance bearing is operatively connected to the first partial ring 23 of the inner ring 22 of the main bearing 20.
• An alternative embodiment consists in arranging the lower balance bearing 19 outside the main bearing 20.
• the anchor 12 is arranged on an anchor axis 30, which is mounted opposite the platform 2 by means of two anchor bearings 31 (only the upper one of which is visible here).
• the armature shaft 30 is arranged rotatable about a second axis of rotation B in the embodiment shown.
• the second axis of rotation B is arranged parallel to the main axis of rotation A.
• the armature 12 is operatively connected to the armature wheel 1 1, which is fastened on an armature wheel shaft 32 with a pinion 27.
• the escape wheel shaft 32 is rotatably supported about a second axis of rotation C by means of two escape wheel bearings 33 attached to the platform 2.
• the pinion 27 is in turn in engagement with the gearwheel 26, which is internally toothed here and fastened on the base 3. respectively to inhibit the balance 9.
• the balls 28 of the main bearing 20 approximately at the height of the platform 2.
• the second partial ring 24 can be designed such that it has teeth (not shown in more detail) on an outer area or is operatively connected to it. This toothing meshes with the pinion 27 and serves as a replacement for the gearwheel 26. This makes it possible to further reduce the number of parts and the overall height.
• the escape wheel 11 is generally arranged between the balance 9 and the platform 2 and the pinion 27 between the balance, respectively the escape wheel 11 and the platform 2.
• the construction of the tourbillon 1 according to the invention offers the advantage that, in particular, the bearings of the balance 18, 19 are accessible and can be serviced in the installed state without the tourbillon 1 or the tourbillon module having to be removed from a clockwork or completely disassembled.
• a separately manufactured, standardized ball bearing can also be used, which is attached by pressing, gluing or in some other way.
• the balls of the bearing are preferably approximately at the level of the platform 3, since a particularly low overall height can be achieved in this way.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Medicines Containing Material From Animals Or Micro-Organisms (AREA)
• Rolling Contact Bearings (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)

Applications Claiming Priority (3)

Publications (2)

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ID=30005589

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• 2003
  • 2003-07-09 AU AU2003245782A patent/AU2003245782A1/en not_active Abandoned
  • 2003-07-09 AT AT03737810T patent/ATE428131T1/de not_active IP Right Cessation
  • 2003-07-09 EP EP03737810A patent/EP1522003B1/fr not_active Expired - Lifetime
  • 2003-07-09 WO PCT/CH2003/000462 patent/WO2004006025A2/fr not_active Application Discontinuation
  • 2003-07-09 DE DE50311390T patent/DE50311390D1/de not_active Expired - Lifetime

Non-Patent Citations (1)

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