EP2406690B1 - Schaltrad für chronograph, chronograph und taschenchronograph, der ein solches rad umfasst - Google Patents

Schaltrad für chronograph, chronograph und taschenchronograph, der ein solches rad umfasst Download PDF

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Publication number
EP2406690B1
EP2406690B1 EP10709199.3A EP10709199A EP2406690B1 EP 2406690 B1 EP2406690 B1 EP 2406690B1 EP 10709199 A EP10709199 A EP 10709199A EP 2406690 B1 EP2406690 B1 EP 2406690B1
Authority
EP
European Patent Office
Prior art keywords
wheel
chronograph
column
columns
lever
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.)
Active
Application number
EP10709199.3A
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English (en)
French (fr)
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EP2406690A1 (de
Inventor
Olivier Mertenat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie des Montres Longines Francillon SA
Original Assignee
Compagnie des Montres Longines Francillon SA
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Compagnie des Montres Longines Francillon SA filed Critical Compagnie des Montres Longines Francillon SA
Priority to EP10709199.3A priority Critical patent/EP2406690B1/de
Publication of EP2406690A1 publication Critical patent/EP2406690A1/de
Application granted granted Critical
Publication of EP2406690B1 publication Critical patent/EP2406690B1/de
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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0842—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms
    • G04F7/0847—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms with column wheel
    • 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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/027—Wheels; Pinions; Spindles; Pivots planar toothing: shape and design
    • 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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/028—Wheels; Pinions; Spindles; Pivots wheels in which the teeth are conic, contrate, etc; also column wheels construction
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0842—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms
    • G04F7/0857—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms with single push-button or actuation member for start-stop and reset

Definitions

  • the invention relates to a chronograph column wheel comprising columns whose shape is optimized. It also relates to a chronograph control mechanism and a chronograph watch comprising such a column wheel.
  • a chronograph watch in order to control and manage the various functions of the chronograph, it is known to use a column wheel.
  • the columns of the column wheel conventionally have a cross section often substantially in the form of a truncated triangle (see FIG. figure 1 ).
  • This type of shape makes it possible to manufacture the wheel and the columns in a simple and inexpensive way.
  • the various levers subjected to the action of the columns are subjected to efforts sometimes too important, thus increasing the levels of friction and wear.
  • the level of precision, when implementing the various functions of the chronograph is not always optimal.
  • the patent document FR 806906 discloses a column wheel chronograph mechanism in which each column of the column wheel has an outer portion whose cross section is asymmetrical.
  • the asymmetrical columns disclosed by this document are adapted to cooperate with a lever whose beak in two parts has a shoulder.
  • An object of the present invention is to overcome the aforementioned drawbacks of the prior art by providing a column wheel for a better distribution of forces on the levers and a higher level of precision in the management of chronograph functions. She achieved by providing a column wheel according to the appended claim 1.
  • the characteristics of the invention make it possible to optimize the general mechanical characteristics of the levers cooperating with the columns: for example, a reduction in friction, wear and energy losses, and a better accuracy of the arrangements of parts and functions are obtained. resulting, etc. This results in better management of the chronograph functions.
  • An advantage of the present invention is that the geometry of the columns makes it possible to precisely define the direction of the force vectors necessary for lifting the levers. This results in a reduction of the forces involved, a better performance, a decrease in wear and increased control of the force to exert on the command "start / stop”.
  • the hub and the arms have a height of between 10% and 50% of the height of the columns; in other words, from a certain height, the rear part of the columns is disengaged.
  • the base is convex so as to be substantially parallel to the circumference of the column wheel.
  • the angle ⁇ is advantageously less than the angle ⁇ of at least 10% and preferably at least 20%. Moreover, the angle ⁇ is preferably between 50 and 53 degrees. It will be understood on the one hand that by choosing a sufficiently salient angle ⁇ ( ⁇ ⁇ 53 °) it is possible to maximize the length of the spout stroke, which allows either to increase the lever lift angle or to increase the length of the lever arm while maintaining the same lift angle. On the other hand, if the angle ⁇ is too salient ( ⁇ ⁇ 50 °), the efforts are concentrated on the angle ⁇ , which can result in an undesirable increase of the losses and the force necessary to actuate a ordered.
  • the invention also provides a chronograph control mechanism comprising a column wheel as previously described and at least one rocker lever whose beak is likely to cooperate with the columns of the column wheel.
  • the invention furthermore provides a chronograph watch comprising a column wheel as previously described and at least one rocking lever whose beak is capable of cooperating with the columns of the column wheel.
  • the lever may for example be a clutch rocker, a hammer or a blocker.
  • the figure 1 shows a perspective view of a known type of column wheel.
  • the columns are evenly distributed around the rim.
  • a symmetrical profile is obtained, substantially in the form of a truncated triangle, or a trapezium, whose large base is parallel to the circumference of the column wheel and turned towards the outside of the column. the teeth of the ratchet.
  • Such a symmetrical arrangement has advantages in terms of design and especially the manufacture of columns.
  • the figure 3 shows a perspective view of a column wheel 1 according to a particular embodiment of the invention.
  • the figure 4 presents a view from above of the same column wheel.
  • These two figures make it possible to clearly view the ratchet 2 provided with teeth 3 distributed symmetrically around its periphery.
  • the ratchet 2 is pierced at its center so to provide an assembly element for mounting the wheel 1 in a chronograph device.
  • the ratchet 2 is capped with a superstructure constituted by a hub 21, by arms 20 and by columns 10.
  • the six columns 10 are arranged symmetrically on the periphery of the ratchet 2 thus giving the superstructure 10, 20, 21 a symmetry of rotation of order 6.
  • the ratchet 2 has 12 teeth regularly spaced from each other by 30 °.
  • the column wheel of the present example is a two-stroke column wheel.
  • the present invention naturally applies equally well to three-stroke column wheels.
  • the arrow R on the figure 4 illustrates the direction of rotation of the column wheel 1, ie the clockwise direction.
  • the figure 2 shows a cross-section of a column 10. It is observed that the section of the column generally has a non-isosceles triangle shape truncated in the area of the summit. The three sides of the triangle are the large base 14, located near the edge of the ratchet 2, the leading edge 12, and the trailing edge 13.
  • the leading edge 12 is so designated because it is the first to come into contact with the spout of the lever (s) of the chronograph mechanism during the rotation of the wheel 1.
  • the trailing edge 13 designates the last face to contact the lever before the latter plunges into the inter column space 22 and is free.
  • the two angles ⁇ and ⁇ adjacent to the large base 14 are rounded. As will be seen later, this feature facilitates the progression of the lever of the lever cooperating with the column during operation of the chronograph.
  • the truncated or trapezoidal triangle shape of the cross section of a column is asymmetrical, with an angle ⁇ less than the angle ⁇ , where the angle ⁇ represents the angle formed between the large base 14 and the leading edge 12, while the angle ⁇ represents the angle formed between the large base 14 and the edge of According to such an arrangement, the leading edge 12 is substantially projected forwardly (in the direction of rotation R) in comparison with a conventional symmetrical arrangement as shown in FIG. figure 1 .
  • angles ⁇ and ⁇ are respectively 51.5 degrees and 69.5 degrees. According to various alternative embodiments, the angle ⁇ may vary, but it is preferably between 50 and 53 degrees. In the present example, the angle ⁇ is about 26% lower than the angle ⁇ . According to various embodiments, the distance between the two angles is preferably between 23 and 28%.
  • the figures 2 , 3 and 4 also allow to clearly visualize the hub 21 and the arms 20 for reinforcing the columns 10.
  • the arms 20 extend between the columns and the hub 21 which is centered on the axis of the wheel.
  • the arms and the hub make it possible to stiffen the construction of the wheel in general, and the columns in particular. This stiffening of the columns allows operation with a particularly high level of precision.
  • the hub 21 and the arms 20 have a height less than that of the columns 10, so that the upper part of the columns protrudes above the rest of the superstructure.
  • the height of the hub and the arms will be between 10% and 50% of the height of the columns.
  • the column wheel according to the invention is preferably manufactured entirely on a lathe. A manufacture without recovery on a lathe allows to give the piece a remarkable precision.
  • the figure 5 shows an example of implementation of a column wheel 1 according to the invention in a chronograph control mechanism.
  • the figure 5 shows a shuttle, or pawl, 24 which is arranged to be actuated by a pusher (not shown) and to act by its spout 25 on a ratchet hard tooth 2 so as to advance the column wheel by the angular value of a Ratchet tooth, a 40 second / minute hammer lever mounted to pivot about an axis 42, a clutch rocker 50 with a spout 51 and, finally, a clutch lever 30.
  • the Figures 6a and 6b are top views that correspond to the perspective view of the figure 5 .
  • the figure 6b is more general than the figure 6a to show also other elements of a chronograph. These elements are in particular a jumper 26 whose nose is intended to cooperate with the teeth of the ratchet 2.
  • the figure 6b also shows that the blocking lever 30 is integral with a shoe 32 and is arranged to cooperate with the column wheel to alternately brake and release the chronograph mobile (referenced 5).
  • the hammer lever 40 it is seen that it is provided with a spout 41 capable of cooperating with the columns of the column wheel.
  • the hammer 40 is provided for acting on the cores 43 to control and manage the zero return function of the chronograph.
  • the figure 6b represents the hammer 40 in a lowered position where it cooperates with the hearts 43.
  • the lowered position of the hammer corresponds to a position of the column wheel which allows the spout 41 of the hammer lever 40 to be immersed in the gap existing between two columns 10.
  • This position of the column wheel identified as 0 degree, serves as a reference.
  • the Figures 6a , and 7 at 12 show the evolution of the position of the wheel, in steps of 5 degrees, to a position of 30 degrees ( figure 12 ).
  • the snapshot represented at figure 6a corresponds to the 0 ° position of the column wheel.
  • the hammer is lowered against the hearts and the hammer beak 41 is positioned freely between two columns 10.
  • the spout 51 of the clutch rocker 50 is in abutment against the outer face of a column 10.
  • the clutch rocker is thus lifted which has the effect of maintaining a return 28 removed from the chronograph wheel 5, and thus to disengage the latter.
  • the hammer 40 and the blocking lever 30 are shaped to cooperate with each other. so that the blocker is kept raised regardless of the position of the column wheel as long as the hammer is lowered against the hearts 43.
  • the snapshot represented at figure 7 corresponds to the 5 ° position of the column wheel.
  • the hammer 40 and always lowered against the hearts 43 and the blocker 30 is always lifted.
  • the hammer nose 41 initiates contact with the leading edge of a column A.
  • the spout 41 is substantially tangent to the leading edge, and the tip of the spout is behind the column; above the arm connecting the column to the hub.
  • This position is made possible by the fact that, on the one hand, the hub and the arms of the column wheel have a height less than that of the columns and, on the other hand, that the hammer lever 40 is placed above other levers, high enough to allow the passage of its beak over the arms.
  • the snapshot represented at figure 8 corresponds to the 10 ° position of the column wheel. It can be seen that in this position, the hammer nose 41 is slightly pushed back by the leading edge of the column A and the hammer has slightly detached from the cores 43. It can also be seen that the clutch rocker nose 51 slides. always against the great base of this same column. Blocker beak 31 is about to initiate contact with column B.
  • the snapshot represented at figure 9 corresponds to the 15 ° position of the column wheel.
  • the lifting of the hammer beak 41 is accentuated by the action of the column A.
  • the hammer has now completely released the hearts 43.
  • the clutch rocker tip 51 arrives near the rear area of the large base 14 of the column A.
  • the hammer 40 is release the blocker 31, but simultaneously the blocker beak 31 initiates contact with the outer face of the column B.
  • the snapshot represented at figure 10 corresponds to the 20 ° position of the column wheel. We see that in this position, the lifting of the hammer beak 41 is almost completed. It is also seen that the clutch rocker nose 51 is about to plunge. On the other hand, the blocker beak 31 is now well against the large base 14 of the column B.
  • the snapshot represented at figure 11 corresponds to the 25 ° position of the column wheel. It can be seen that in this position, the hammer nose 41 bears against the large base 14 of the column A. The clutch rocker nose 51 has plunged between two columns, but the chronograph mobile 5 is not yet engaged. The blocker nose 31 is still resting against the large base 14 of the column B.
  • the snapshot represented at figure 12 corresponds to the 30 ° position of the column wheel. It can be seen that in this position, the clutch lever 51 is always lowered between two columns and the gear 28 now meshes with the chronograph mobile which is thus engaged, which corresponds to the start ("start") of the chronograph.
  • the blocker beak 31 remains in abutment against the large base 14 of the column B.
  • This geometry of the columns makes it possible to precisely define the direction of the vectors of forces necessary for the lifting of the levers. A reduction in the forces involved, a better efficiency, a reduction in wear and an increased control of the force to be exerted on the "start / stop" command are thus obtained.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Claims (9)

  1. Säulenrad (1) für Chronographen, umfassend:
    - ein Schaltrad (2), das mit einer Vielzahl von Zähnen (3) versehen ist, deren Form einen Drehsinn für das Säulenrad definiert;
    - einen Oberbau, der koaxial zum Rad ist und eine Rotationssymmetrie in der Grösse von n ≥ 3 aufweist, wobei der periphere Teil des Oberbaus n Säulen (10) bildet, die parallel zur Achse des Rades sind und merklich längs dem Umfang des Schaltrades (2) angeordnet sind, und welcher Oberbau zudem eine Nabe (21) umfasst, die durch Arme (20) mit den Säulen verbunden ist, um sie zu verstärken, wobei jede Säule einen äusseren Teil umfasst, dessen Querschnitt merklich die Form eines abgestumpften Dreiecks mit einer Basis, die merklich parallel zum Umkreis des Rades ist, und mit einer Vorderseite (12), der sogenannten Eingriffskante, und einer Hinterseite (13), der sogenannten Austrittskante, die sich ausgehend von der Basis in Richtung auf das Radinnere erstrecken, aufweist, wobei der Querschnitt asymmetrisch ist, wobei ein erster Winkel α zwischen der Eingriffskante (12) und der Basis (14) kleiner ist als ein zweiter Winkel β zwischen der Basis und der Austrittskante (13);
    dadurch gekennzeichnet, dass die Nabe und die Arme eine Höhe aufweisen, die zwischen 10% und 50% der Höhe der Säulen liegt.
  2. Säulenrad (1) für Chronographen nach Anspruch 1, in dem die Basis (14) merklich konvex abgerundet ist.
  3. Säulenrad (1) für Chronographen nach Anspruch 1 oder 2, in dem der Winkel α mindestens 10% und vorzugsweise mindestens 20% kleiner ist als der Winkel β.
  4. Säulenrad (1) für Chronographen nach Anspruch 1, 2 oder 3, in dem der Winkel α zwischen 50 Grad und 53 Grad liegt.
  5. Steuermechanismus für Chronographen, der ein Säulenrad (1) nach einem der Ansprüche 1 bis 4 und wenigstens einen drehbaren Hebel (30, 40, 50) umfasst, dessen Schnabel mit den Säulen (10) des Säulenrades zusammenwirken kann.
  6. Steuermechanismus für Chronographen nach Anspruch 5, in dem ein Hebel eine Kupplungswippe (50) ist.
  7. Steuermechanismus für Chronographen nach Anspruch 5 oder 6, in dem ein Hebel ein Hammer (40) ist.
  8. Steuermechanismus für Chronographen nach einem der Ansprüche 5, 6 oder 7, in dem ein Hebel ein Blockierhebel (30) ist.
  9. Chronographenuhr, die einen Steuermechanismus für Chronographen nach einem der Ansprüche 5 bis 8 umfasst.
EP10709199.3A 2009-03-12 2010-03-11 Schaltrad für chronograph, chronograph und taschenchronograph, der ein solches rad umfasst Active EP2406690B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10709199.3A EP2406690B1 (de) 2009-03-12 2010-03-11 Schaltrad für chronograph, chronograph und taschenchronograph, der ein solches rad umfasst

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09155010A EP2228692A1 (de) 2009-03-12 2009-03-12 Schaltrad für Chronograph, Chronograph und Taschenchronograph, der ein solches Rad umfasst
PCT/EP2010/053073 WO2010103060A1 (fr) 2009-03-12 2010-03-11 Roue a colonnes pour chronographe, chronographe et montre-chronographe comportant une telle roue
EP10709199.3A EP2406690B1 (de) 2009-03-12 2010-03-11 Schaltrad für chronograph, chronograph und taschenchronograph, der ein solches rad umfasst

Publications (2)

Publication Number Publication Date
EP2406690A1 EP2406690A1 (de) 2012-01-18
EP2406690B1 true EP2406690B1 (de) 2014-05-07

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP09155010A Withdrawn EP2228692A1 (de) 2009-03-12 2009-03-12 Schaltrad für Chronograph, Chronograph und Taschenchronograph, der ein solches Rad umfasst
EP10709199.3A Active EP2406690B1 (de) 2009-03-12 2010-03-11 Schaltrad für chronograph, chronograph und taschenchronograph, der ein solches rad umfasst

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09155010A Withdrawn EP2228692A1 (de) 2009-03-12 2009-03-12 Schaltrad für Chronograph, Chronograph und Taschenchronograph, der ein solches Rad umfasst

Country Status (6)

Country Link
US (1) US8529121B2 (de)
EP (2) EP2228692A1 (de)
JP (1) JP5548708B2 (de)
CN (1) CN102405445B (de)
RU (1) RU2523750C2 (de)
WO (1) WO2010103060A1 (de)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP4310606A1 (de) 2022-07-19 2024-01-24 Chopard Technologies SA Chronographenmechanismus mit drei takten und verfahren zur herstellung und umwandlung von chronographenmechanismen mit zwei und drei takten

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EP2400351B1 (de) 2010-06-22 2013-09-25 Omega SA Monoblock-Triebfeder für eine Uhr
EP2602675B1 (de) * 2011-12-08 2014-08-27 ETA SA Manufacture Horlogère Suisse Uhrwerk umfassend einen Chronographenmechanismus mit Säulenrad
EP2602672B1 (de) * 2011-12-08 2014-07-16 ETA SA Manufacture Horlogère Suisse Schaltrad und Mechanismus für einen Chronographen, der ein solches Rad umfasst
EP2945029B1 (de) * 2014-05-15 2017-05-31 Patek Philippe SA Genève Chronograph Verriegelung (Vorrichtung für Uhr)
CH710205B1 (fr) 2014-10-03 2018-09-28 Breitling Ag Mécanisme de chronographe à roue à colonnes à deux étages.
CN108279557B (zh) * 2018-03-28 2024-03-01 天王电子（深圳）有限公司 指针逆跳结构及钟表
EP3968094A1 (de) 2020-09-09 2022-03-16 Omega SA Wahlmechanismus eines uhrwerks

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Publication number Priority date Publication date Assignee Title
EP4310606A1 (de) 2022-07-19 2024-01-24 Chopard Technologies SA Chronographenmechanismus mit drei takten und verfahren zur herstellung und umwandlung von chronographenmechanismen mit zwei und drei takten
WO2024018336A1 (fr) 2022-07-19 2024-01-25 Chopard Technologies Sa Mécanisme de chronographe à trois temps et procédés de réalisation et de transformation de mécanismes de chronographe à deux temps et à trois temps

Also Published As

Publication number Publication date
JP2012520447A (ja) 2012-09-06
EP2228692A1 (de) 2010-09-15
JP5548708B2 (ja) 2014-07-16
RU2523750C2 (ru) 2014-07-20
RU2011141296A (ru) 2013-04-20
EP2406690A1 (de) 2012-01-18
CN102405445B (zh) 2014-07-02
CN102405445A (zh) 2012-04-04
WO2010103060A1 (fr) 2010-09-16
US20120069717A1 (en) 2012-03-22
US8529121B2 (en) 2013-09-10

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