EP2798413B1 - Feder für uhrwerk - Google Patents

Feder für uhrwerk Download PDF

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Publication number
EP2798413B1
EP2798413B1 EP12813874.0A EP12813874A EP2798413B1 EP 2798413 B1 EP2798413 B1 EP 2798413B1 EP 12813874 A EP12813874 A EP 12813874A EP 2798413 B1 EP2798413 B1 EP 2798413B1
Authority
EP
European Patent Office
Prior art keywords
spring
frame
horological
curve
less
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
EP12813874.0A
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English (en)
French (fr)
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EP2798413A2 (de
Inventor
Christian Fleury
Blaise FRACHEBOUD
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.)
Rolex SA
Original Assignee
Rolex SA
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Filing date
Publication date
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Priority to EP12813874.0A priority Critical patent/EP2798413B1/de
Publication of EP2798413A2 publication Critical patent/EP2798413A2/de
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Publication of EP2798413B1 publication Critical patent/EP2798413B1/de
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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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/02—Devices allowing the motion of a rotatable part in only one direction
    • G04B11/028—Devices allowing the motion of a rotatable part in only one direction with friction member, e.g. click spring
    • 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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/006—Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices)
    • G04B11/008—Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices) with friction members, e.g. click springs or jumper
    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25373—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by an energy source which is released at determined moments by the clockwork movement
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/06—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents

Definitions

  • the invention relates to a spring for a watch mechanism or a spring for a watch mechanism.
  • the invention also relates to a horological mechanism, in particular a calendar mechanism, a correction mechanism or a notching mechanism, comprising such a spring.
  • the invention also relates to a watch movement comprising such a spring or such a mechanism.
  • Watch mechanisms are generally provided with springs, levers and cams which are intended to cooperate in order to perform various functions of a watch movement. Energy, taken from the motor member or supplied by the wearer of the wristwatch, is thus accumulated and restored by the springs so as to guarantee the functions, all in a limited volume. Watchmaking designs are thus frequently constrained by the bulkiness which leads to spring geometries in which the mechanical stresses are very important with regard to the forces to be supplied. In certain cases, it is possible to implement “wire” springs. However, the dimensional tolerances are particularly tight and the bending tolerances are very difficult to guarantee, which makes the industrial and repeatable production of such springs problematic.
  • DE 6912966U discloses a locking system with a spring comprising a member which allows the rotation of a ratchet wheel only in one direction.
  • the aim of the invention is to provide a spring for a watch mechanism making it possible to remedy the drawbacks mentioned above and to improve the springs known from the prior art.
  • the invention proposes a spring making it possible to minimize the mechanical stresses which it undergoes when it is stressed while being able to be accommodated in a given bulk.
  • a horological mechanism is defined by claim 10.
  • a watch movement is defined by claim 13.
  • a timepiece is defined by claim 14.
  • a timepiece 300 according to the invention is described below with reference to figure 1 .
  • the timepiece is for example a watch, in particular a wristwatch.
  • the timepiece comprises a horological movement 200, in particular a mechanical type horological movement.
  • the watch movement comprises a mechanism 100, in particular a mechanism including an element 19 and a spring 10.
  • a first variant of the spring 10 for a watch mechanism or spring for a watch mechanism is described below with reference to figures 1 and 2 .
  • the spring is for example used in a watch mechanism of the device type for rapidly correcting a time indication.
  • the spring 10 is for example provided to cooperate by contact action on an element 19 of the watch mechanism to generate a notch during the correction so as to allow the adjustment of a time indication by a predefined angular pitch.
  • the spring is intended to be mounted on a frame.
  • the spring 10 comprises a body 11 which extends between a first end 12 of the spring and a second end 13 of the spring.
  • the body 11 of the spring 10 has a zone 14 of substantially rectangular cross section which is highly deformable under an action of a given intensity. This zone is located between the points 12a and 13a of the respective ends 12 and 13 beyond which the section of the body 11 of the spring 10 can vary substantially.
  • the zone 14 does not generally include the connecting elements 15 and 16 of the respective ends 12 and 13.
  • the curve 18 along which the zone 14 of the body 11 extends between the points 12a and 13a is preferably a circular or substantially circular curve. circular inside which is the center of gravity 11g of the body 11 of the spring. This curve is generally concave seen from the center of gravity 11g of the body 11 of the spring.
  • Curve 18 is also preferably a flat curve.
  • the body of the spring or the spring extends in a plane.
  • the first end of the spring may be oriented along a first plane and the second end may be oriented along a second plane.
  • the foreground and the second plane are not necessarily parallel.
  • the axis of a first connecting element is perpendicular to the first plane and the axis of a second connecting element is perpendicular to the second plane.
  • the first connecting element provided on the spring cooperates with another connecting element on the frame to constitute a pivot connection between the spring and the frame.
  • the second connecting element provided on the spring cooperates with another connecting element on the frame to constitute a pivot connection between the spring and the frame.
  • the spring comprises, between the first 12 and the second end 13, a member 17 intended to act by contact on the element 19 of the clock mechanism which is preferably movable relative to the frame.
  • the element 19 is for example a star 19 movable in rotation around its center
  • the member 17 is for example a finger 17 projecting from the body 11 of the spring. This finger comprises a contact surface intended to act by contact on the star 19.
  • the member 17 is oriented towards the inside of the curve of the spring body as seen from the center of gravity of the spring body.
  • the spring is intended to be mechanically linked to a frame at each of the first and second ends by respectively first and second pivot links.
  • the spring comprises a first pivot link member 15 to the frame at the first end 12 and a second pivot link member 16 to the frame at the second end 13.
  • the first link member preferably comprises a bore 15 or a bore portion intended to receive an axis mounted on the frame.
  • the second connecting element preferably comprises a bore or a portion of bore 16 intended to receive a pin mounted on the frame.
  • a connecting element comprises a bore portion
  • the spring can be fitted on a pin fixed to the frame.
  • the distance D between the first and second ends, in particular between the axis of the first connecting element and the axis of the second connecting element is less than 8 times the thickness E of the ends. 12 and 13 of the spring and is of the order of 1 mm and the thickness E measured at the ends 12 and 13 is of the order of 0.2 mm.
  • the thickness E of the spring is measured perpendicular to the plane of the figures 1 and 2 .
  • the angle ⁇ formed by the two half-lines having for origin the center of gravity 11g of the body 11 of the spring and passing through the axis of the first connecting element 15 and the axis of the second connecting element 16, is l 'order of 60 °.
  • the star When turning the star of the configuration of the figure 1 to that of figure 2 , the star acts by contact on the finger 17 of the spring. There is an elastic deformation of the spring which stores mechanical energy. There are also rotations at the ends of the spring. Conversely, when we continue to rotate the star of the configuration of the figure 2 to that of figure 1 , it is the finger 17 which acts by contact on the star 19.
  • the spring restores the energy that it had stored, and rotations occur at the ends of the spring.
  • the spring is intended to store mechanical energy due to its deformation under the effect of a motor member or of the user and to restore this energy or part of this energy to the element 19, in particular by the contact of the member 17 on the element 19.
  • This energy return makes it possible to drive or activate or activate the element or a mechanism.
  • the energy returned takes the form of mechanical work actuating or setting in motion or moving the element 19.
  • the spring can be mounted pre-stressed on the frame in a configuration where it does not act on the element 19 or in a configuration where the intensity of its contact action on the element 19 is minimal.
  • the angular rigidity of the spring is optimized so that the spring produces a range of torque or force adapted for example to the notching function as described previously, and that the mechanical stresses within it are lower than the maximum admissible stress of the material constituting the spring.
  • the two pivot connections of the spring make it possible to minimize the mechanical stresses which the spring undergoes when the latter is stressed.
  • Such a spring is particularly advantageous with regard to the small size it requires.
  • such a spring is also particularly suitable for industrial production. More particularly, by virtue of the two pivot connections of the spring, the angular rigidity of the spring is optimized so that the zone 14 of the body 11 of the spring 10 has a section suitable for an industrial manufacturing process.
  • the distance D between the first and second ends, in particular between the axis of the first connecting element and the axis of the second connecting element can be minimized.
  • the distance D can in particular be reduced to the minimum distance required between the axis of the first connecting element and the axis of the second connecting element with respect to the thickness E of the spring and the walls of residual material measured at its two ends. .
  • the figures 3 and 4 illustrate a second variant of a spring 20 which may, for example, have the same functions as the spring 10 described above.
  • the spring 20 is also used in a device for rapidly correcting a time indication.
  • the spring 20 is for example provided to cooperate by action by contact on a star 29 of a mechanism watchmaker, identical to star 19, to generate a notch during the correction so as to allow the adjustment of a time indication by a predefined angular step.
  • the spring 20 once mounted on the frame, the distance D between the first and second ends, in particular between the axis of the first connecting element and the axis of the second connecting element, is less than 8 times the thickness E of the ends 12 and 13 of the spring and is of the order of 1 mm and the thickness E measured at the ends 22 and 23 is of the order of 0.2 mm within the spring 20 illustrated by the figures 3 and 4 .
  • the thickness E of the spring is measured perpendicular to the plane of the figures 3 and 4 .
  • the curve 28, seen from the center of gravity 21g of the body 21 of the spring extends over an arc ⁇ of the order of 210 ° within the spring 20 illustrated in the configuration of the figure 3 .
  • the angle ⁇ formed by the two half-lines having for origin the center of gravity 21g of the body 21 of the spring and passing respectively through the ends 22 and 23, in particular through the axis of the first connecting element 25 and the axis of the second connecting element 26 is of the order of 45 ° within the spring 10 illustrated in the configuration of the figure 3 .
  • the element 19, 29 moves by at least 10 °, or even at least 15 °, or even at least 20 °, or even at least 30 °, relative to the frame, when changing from a configuration of maximum stress in the spring to a configuration of minimum stress in the spring.
  • This movement takes place under the effect of the return of the mechanical energy stored in the spring, in particular in the form of mechanical work.
  • the finger 17, 27 can move at least 5 °, or even at least 10 °, around the axis of a connecting element 25.
  • a third variant embodiment of a spring 30 for a watch mechanism is described below with reference to figures 6 and 7 .
  • the spring 30 is for example used in a calendar device shown in figure 6 .
  • the spring 30 is for example provided to cooperate by action by contact on an element 1 of the calendar device to generate a drive of a day display disc (not shown in FIG. figure 6 ). This advantageously makes it possible to replace a conventional drive finger associated with an additional spring which risks over-encumbering the watch mechanism.
  • the third variant of the spring differs from the first variant only by the elements which are described below.
  • the spring 30 comprises a body 31 which extends between a first end 32 of the spring and a second end 33 of the spring.
  • the spring comprises, between the first and the second end, a member 37, in particular a drive finger 37, intended to act by contact on the element 1 of the watch mechanism.
  • the body 31 of the spring has a zone 34 of substantially rectangular cross section which is highly deformable under an action of a given intensity. This zone is located between the points 32a and 33a of the respective ends 32 and 33 beyond which the section of the body 31 of the spring 30 can vary substantially.
  • the zone 34 does not generally include the connecting elements 35 and 36 of the respective ends 32 and 33.
  • the curve 38 along which the zone 34 of the body 31 extends between the points 32a and 33a is preferably a circular or substantially circular curve.
  • Curve 38 is also preferably a plane curve.
  • the spring body or the spring extends in a plane.
  • the first end of the spring may be oriented along a first plane and the second end may be oriented along a second plane.
  • the foreground and the second plane are not necessarily parallel.
  • the axis of the first connecting element is perpendicular to the first plane and the axis of the second connecting element is perpendicular to the second plane.
  • the member 37 is oriented outward from the curve of the spring body as seen from the center of gravity of the spring body.
  • the spring is intended to be mechanically linked to a frame at each of the first and second ends by respectively first and second pivot links. More particularly, the spring comprises a first pivot link member 35 to the frame at the first end 32 and a second pivot link member 36 to the frame at the second end 33.
  • the first link member preferably comprises a bore. 35 or a bore portion intended to receive a pin mounted on the frame.
  • the second connecting element preferably comprises a bore or a portion of bore 36 intended to receive a pin mounted on the frame. In the case where a connecting element comprises a bore portion, the spring can be fitted on a pin fixed to the frame.
  • the figure 7 illustrates a spring 30, in a given configuration, which has the characteristics mentioned below.
  • the distance D between the first and second ends, in particular between the axis of the first connecting element 35 and the axis of the second connecting element 36 is minimized, is less than 8 times the thickness E of the ends 12 and 13 of the spring and is of the order of 1 mm.
  • the thickness E measured at the ends 32 and 33, and measured perpendicular to the plane of the figure 7 is of the order of 0.2 mm.
  • the angle ⁇ over which the curve 38 extends is of the order of 215 °.
  • the angle ⁇ formed by the two half-lines having for origin the center of gravity 31g of the body 31 of the spring and passing through the axis of the first connecting element 35 and the axis of the second connecting element 36, is l 'order of 30 °.
  • the frame 3 is for example constituted by a wheel 3.
  • the element 1 is movable relative to the frame 3.
  • the element is a mobile day star in rotation around its center relative to a structure on which is also mounted, in rotation, the wheel 3.
  • Star 1 has seven teeth 1a and carries the day display disc (not shown on figure 6 ).
  • the toothing 1a of this star 1 is angularly indexed by means of a beak 2 and is driven instantaneously, every 24 hours at midnight, by means of the drive wheel 3.
  • This device is accompanied by 'a rapid correction mechanism consisting of a corrector 4 and a correction wheel 4' integral with the star 1. When this mechanism is activated, the corrector 4 is positioned so that its teeth can engage in a only sense the toothing of the correction wheel 4 '. Thus, the indication of the days is only corrected chronologically.
  • the figure 6 illustrates this calendar mechanism in a configuration in which the drive finger 37 is positioned and held within the toothing 1a by means of a lever 8, a roller 8a of which is applied against a stop curve 6c of a cam 6. More particularly , the figure 6 illustrates the finger 37 in a position in which it must be able to retract over the whole of an angular step of the star 1, ie approximately 50 °, during a rapid correction of the indication of the days.
  • the retractable finger must be able to withstand a rotation around the first mechanical connection element 35 over a large angular extent of the order of 50 °, while having stresses within it less than those which are admissible by the material constituting it.
  • the spring 30 presses the finger 37 against a pin 40 so that the finger 37 behaves like a rigid finger in order to guarantee the jump of the day indication.
  • the spring is slightly pre-loaded during assembly.
  • the spring is shown after assembly, in particular by fitting the second end onto a pin 36 '.
  • the torque produced by the spring also enables finger 37 to stop the star days after the date jump, and thus avoids any risk of a double jump.
  • the finger 37 pivots by a value of the order of 50 ° around the pivot around the pin 35 '.
  • the other pivot, around the pin 39 allows it to generate such a movement of the finger 37 while limiting the deformation of the spring. The stresses, during the complete retraction of the finger 37, thus remain below the elastic limit of the material of the spring.
  • the angular rigidity of the spring is optimized so that the movement of the finger 37 is maximized.
  • the two pivot connections of the spring make it possible to minimize the mechanical stresses which the spring undergoes when the latter is stressed. These constraints are all the more minimized as the distance between the two pivot connections of the spring is minimized.
  • the member 37 is preferably brought closer to one of the two ends 32 and 33 of the spring so as to define a continuous deformable zone 34, the extent of which is maximized between the points 32a and 32b of the spring.
  • the position of the element on which the spring acts and the position of at least one of the two ends of the spring are fixed, it may be advantageous to interrupt the zone of the spring which can be deformed by the rigid member capable of coming into contact with the element on which the spring acts.
  • this configuration can be quite satisfactory for minimizing the stresses within the spring in a given configuration.
  • the figure 8 illustrates a fourth variant embodiment of a spring 50 which may, for example, have the same functions as the spring 30 described above.
  • the spring 50 comprises, between the first and the second end, a member 57 intended to act by contact on an element of a watch mechanism.
  • the body 51 of the spring has a zone 54 of substantially rectangular cross section which is highly deformable under an action of a given intensity.
  • This zone 54 consists of two parts which are delimited by the member 57.
  • This zone is located between the points 52a and 53a of the respective ends 52 and 53 beyond which the section of the body 51 of the spring 50 can vary substantially.
  • the curve 58 along which the zone 54 of the body 51 extends between the points 52a and 53a is preferably a circular or substantially circular curve 58 within which the center of gravity 51g of the body 51 of the spring is located. This curve is generally concave seen from the center of gravity 51g of the body 51 of the spring.
  • the figure 8 illustrates a spring 50, in a given configuration, which has the characteristics mentioned below.
  • the distance D between the first and second ends, in particular between the axis of the first connecting element 65 and the axis of the second connecting element 66, is l 'order of 1 mm.
  • the thickness E measured at the ends 62 and 63, and measured perpendicular to the plane of the figure 8 is of the order of 0.2 mm.
  • the angle ⁇ over which the curve 68 extends is of the order of 265 °.
  • the angle ⁇ formed by the two half-lines having for origin the center of gravity 61g of the body 61 of the spring and passing through the axis of the first connecting element 65 and the axis of the second connecting element 66, is l 'order of 25 °.
  • the proximity of the centers of the mechanical connecting elements allows low angular rigidity, makes it possible to perform a large angular travel without exceeding the admissible stress.
  • the distance between the first and second ends, in particular between the axis of the first connecting element and the axis of the second connecting element is less than 8 times the thickness of the ends of the spring , or even less than 6 times the thickness of the ends of the spring, and is preferably less than 5 mm, or even less than 2 mm, or even less than 1 mm.
  • the spring comprises, between the first and the second end, at least one member intended to act by contact on an element of the watch mechanism.
  • the spring has an overall annular shape with an opening.
  • the curve 18, 28, 38, 58 is preferably a flat curve.
  • the body of the spring or the spring extends in a plane.
  • the first end of the spring can be oriented in a foreground and the second end can be oriented in a second plane.
  • the foreground and the second plane are not necessarily parallel.
  • the axis of the first connecting element is perpendicular to the first plane and the axis of the second connecting element is perpendicular to the second plane.
  • the curve 18, 28, 38, 58 according to which the zone 14, 24, 34, 54 of the body 11, 21, 31, 51 extends between the points 12a, 22a, 32a, 52a and 13a, 23a, 33a, 53a is preferably a circular or substantially circular curve within which the center of gravity 11g, 31g, 51g of the body 11, 31, 51 of the spring is located.
  • This curve is generally concave seen from the center of gravity 11g, 21g, 31g, 51g of the body 11, 21, 31, 51 of the spring.
  • the curve may locally have one or more convexities.
  • this curve, seen from the center of gravity of the body of the spring extends over an arc of an angular range ⁇ greater than 200 °, or even 220 °.
  • the centers of gravity 11g, 21g, 31g, 51g of the bodies of the springs 10, 20, 30, 50 can be the centers of gravity of the curves passing through the centers of the straight sections of the springs and connecting the axes of the connecting elements.
  • the spring can be made of different materials. It can in particular be made of spring steel, silicon, nickel, nickel-phosphorus or an amorphous metal alloy.
  • the spring can be produced for example by a mechanical process such as stamping or wire cutting.
  • the spring can also be produced by stereolithography, by a LIGA process, by a DRIE etching process, or else by a laser engraving process. These production methods make it possible in particular to produce small thicknesses of material at the level of the connecting elements, which allows to bring as close as possible the axes of the mechanical link elements.
  • the member intended to act by contact on an element of the watch mechanism may have a different thickness from that of the other parts of the spring.
  • the spring according to the invention can have zones of different thicknesses.
  • the monobloc spring due to its low angular rigidity, the monobloc spring makes it possible to maximize the energy accumulated during its charge while limiting the stresses within it.
  • the spring makes it possible to provide the forces necessary to accomplish various horological functions in a given volume. To do this, the monobloc spring has two separate and close pivots.
  • the distance between the axes of the connecting elements depends directly on the minimum material thicknesses achievable by the production process.
  • the invention also relates to a horological movement or to a timepiece, in particular to a watch, comprising a horological mechanism as described above or a spring as described above.
  • the term “spring” has been used to designate a one-piece element comprising a first part highly deformable under an action of a given intensity and a second part, in particular at the level of the organ, slightly deformable, or even undeformable. , under this same action. This was done by analogy to other uses of the term “spring”.
  • the term “spring” is also used, in the usual manner, to denote a helical spring loaded in tension and terminated by a hook at each of these ends.
  • a helical spring comprises a first part (shaped as a helix) highly deformable under an action of a given intensity and a second part (the hooks) weakly deformable, or even undeformable, under this same action.
  • body or “spring body” designates the spring itself, that is to say the material forming the spring.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Springs (AREA)
  • Electric Clocks (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (14)

  1. Feder (10; 20; 30; 50) für einen Uhrmechanismus, wobei die Feder einen Körper (11; 21; 31; 51) enthält, der sich zwischen einem ersten Ende (12; 22; 32; 52) der Feder und einem zweiten Ende (13; 23; 33; 53) der Feder erstreckt, wobei die Feder dazu bestimmt ist, im Bereich jedes der ersten und zweiten Enden mechanisch mit einem Gestell verbunden zu sein, wobei die Feder zwischen dem ersten und dem zweiten Ende mindestens ein Organ (17; 27; 37; 57) enthält, das dazu bestimmt ist, durch Kontakt auf ein Element des Uhrmechanismus einzuwirken, wobei die Feder ein erstes Element (15; 25; 35; 55) zur mechanischen Verbindung mit dem Gestell im Bereich des ersten Endes und ein zweites Element (16; 26; 36; 56) zur mechanischen Verbindung mit dem Gestell im Bereich des zweiten Endes enthält, und die Feder dazu bestimmt ist, über eine Schwenkverbindung im Bereich des ersten Endes mit dem Gestell verbunden zu sein, und die Feder dazu bestimmt ist, über eine Schwenkverbindung im Bereich des zweiten Endes mit dem Gestell verbunden zu sein, und die Feder dadurch gekennzeichnet ist, dass der Abstand zwischen dem ersten und dem zweiten Ende, wenn die Feder auf das Gestell montiert ist, geringer als das 8-Fache der Dicke der ersten und zweiten Enden (12; 22; 32; 52; 13; 23; 33; 53) der Feder ist, vorzugsweise noch geringer als das 6-Fache der Dicke der ersten und zweiten Enden (12; 22; 32; 52; 13; 23; 33; 53) der Feder.
  2. Feder nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Abstand zwischen den ersten und zweiten Enden, wenn die Feder auf das Gestell montiert ist, geringer als 5 mm, sogar geringer als 2 mm, sogar geringer als 1 mm ist.
  3. Feder nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Körper einen verformbaren Bereich (14; 24; 34; 54) enthält, der sich gemäß einer Kurve (18; 28; 38; 58) erstreckt.
  4. Feder nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Kurve kreisförmig oder im Wesentlichen kreisförmig ist, und/oder dass die Kurve sich über einen Winkel (α) größer als 200°, sogar größer als 220°, erstreckt, gesehen vom Schwerpunkt des Körpers der Feder, und/oder dass Halbgeraden, die als Ursprung den Schwerpunkt des Körpers der Feder haben und durch das erste bzw. zweite Ende verlaufen, einen Winkel (β) kleiner als 50°, sogar kleiner als 40° bilden.
  5. Feder nach einem der Ansprüche 3 bis 4, dadurch gekennzeichnet, dass die Kurve eine ebene Kurve (18; 28; 38; 58) ist.
  6. Feder nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Organ einen Finger (17; 27; 37; 57) enthält, der auf dem Körper (11; 21; 31; 51; 61) der Feder vorsteht.
  7. Feder nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie aus Federstahl oder aus Silicium oder aus Nickel oder aus Nickel-Phosphor oder einer amorphen Metalllegierung besteht.
  8. Feder nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Körper global eine Ringform hat, die eine Öffnung aufweist.
  9. Feder nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Organ dazu bestimmt ist, eine Energie, insbesondere in Form einer maschinellen Arbeit, an das Element des Uhrmechanismus zurückzugeben.
  10. Uhrmechanismus (100), insbesondere Kalendermechanismus, Korrekturmechanismus, Rastmechanismus, der eine Feder nach einem der vorhergehenden Ansprüche enthält.
  11. Uhrmechanismus nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass er ein Gestell und ein bezüglich des Gestells bewegliches Element enthält, und dass die Fläche der Feder durch Kontakt auf das bewegliche Element einwirkt.
  12. Uhrmechanismus nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass bei Normalbetrieb des Mechanismus das bewegliche Element sich bei einem Übergang von einer Konfiguration maximaler Spannung in der Feder zu einer Konfiguration minimaler Spannung in der Feder um mindestens 10°, sogar um mindestens 15°, sogar um mindestens 20°, sogar um mindestens 30° bezüglich des Gestells verschiebt, und/oder der Finger sich um mindestens 5°, sogar um mindestens 10°, um die Achse eines Verbindungselements verschiebt.
  13. Uhrwerk (200), das einen Uhrmechanismus (100) nach einem der Ansprüche 10 bis 12 oder eine Feder nach einem der Ansprüche 1 bis 9 enthält.
  14. Uhr (300), insbesondere Armbanduhr, die ein Uhrwerk nach dem vorhergehenden Anspruch oder einen Uhrmechanismus nach einem der Ansprüche 10 bis 12 oder eine Feder nach einem der Ansprüche 1 bis 9 enthält.
EP12813874.0A 2011-12-27 2012-12-26 Feder für uhrwerk Active EP2798413B1 (de)

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EP11405378 2011-12-27
PCT/EP2012/076911 WO2013102598A2 (fr) 2011-12-27 2012-12-26 Ressort pour mouvement horloger
EP12813874.0A EP2798413B1 (de) 2011-12-27 2012-12-26 Feder für uhrwerk

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CH712289A1 (fr) * 2016-03-23 2017-09-29 Officine Panerai Ag Ressort de réglage rapide pour mouvement horloger.
EP3379342B1 (de) * 2017-03-22 2022-07-20 Officine Panerai AG Vorrichtung, die eine schnelleinstellfeder für uhrwerke umfasst, die mit einer triebfeder zusammenwirkt
EP3543800B1 (de) 2018-03-20 2021-11-10 Omega SA System eines drehbaren aussenrings einer armbanduhr, das einen federring umfasst

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EP2798413A2 (de) 2014-11-05
US20140362670A1 (en) 2014-12-11
WO2013102598A2 (fr) 2013-07-11
US9395691B2 (en) 2016-07-19
CN104024961A (zh) 2014-09-03
JP2015503738A (ja) 2015-02-02
JP6148683B2 (ja) 2017-06-14
CN104024961B (zh) 2018-05-29
WO2013102598A3 (fr) 2013-09-06

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