EP3373079B1 - Montre-bracelet à remontage manuel - Google Patents

Montre-bracelet à remontage manuel Download PDF

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Publication number
EP3373079B1
EP3373079B1 EP17159355.1A EP17159355A EP3373079B1 EP 3373079 B1 EP3373079 B1 EP 3373079B1 EP 17159355 A EP17159355 A EP 17159355A EP 3373079 B1 EP3373079 B1 EP 3373079B1
Authority
EP
European Patent Office
Prior art keywords
winding
freewheel
spring
wristwatch according
arresting
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
EP17159355.1A
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German (de)
English (en)
Other versions
EP3373079A1 (fr
Inventor
Theodor Anton STAUB
Christiane Schneider
Jens Schneider
Mike VON DER BURG
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.)
Grossmann Uhren GmbH
Original Assignee
Grossmann Uhren GmbH
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Filing date
Publication date
Application filed by Grossmann Uhren GmbH filed Critical Grossmann Uhren GmbH
Priority to EP17159355.1A priority Critical patent/EP3373079B1/fr
Publication of EP3373079A1 publication Critical patent/EP3373079A1/fr
Application granted granted Critical
Publication of EP3373079B1 publication Critical patent/EP3373079B1/fr
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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
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • G04B3/08—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously by parts of the cases
    • 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
    • G04B37/00—Cases
    • G04B37/06—Forming the passage for the winding stem through the case; Divided winding stems
    • G04B37/068—Stem passage not being part of the layout of the clockwork

Definitions

  • the invention relates to a wristwatch which has a mechanical clockwork with manual winding.
  • Portable mechanical watches which can be wound using a separate winding key or a shaft provided with a crown.
  • the key is not an integral part of the movement and must be inserted into a hole in the case or dial that has to be opened before each winding, which is not suitable for wristwatches.
  • wristwatches usually have a crown attached to the side, which is limited in the choice of diameter due to the height of the watch.
  • a gearbox is therefore required to reduce the torque, which means that the speed to be applied to the crown until it is fully wound is 2-3 times as high as the number of revolutions required on the barrel.
  • Elevators are also known in which a bezel of the The case is fluted and rotatable and is used to wind the watch. The rotation of the bezel is transmitted to the inside of the watch via a gear. This is difficult to seal, however, and tends to become dirty and difficult to move.
  • the wide, fluted bezel also characterizes the design of this watch.
  • One object of the invention is therefore to improve a hand-wound wristwatch in such a way that the movement can be wound with little effort and few movements.
  • the wrist strap attachment attached to the winding shaft takes on the task of winding the clockwork, i.e. the tensioning of a tension spring of the clockwork, which is carried out in known wristwatches with manual winding by means of a winding crown, by twisting the wristband attachment relative to the case.
  • the mainspring also known as the mainspring, is a component of a mechanical watch, the elastic deformation of which is used to store energy and drive it.
  • the drive spring is a spiral wound around a spring core (spring shaft) that is subjected to bending stresses and has an inner and outer fastening end that, when wound up, has a certain torque to drive the watch. Energy is supplied through the Elevator.
  • the wristband attachment has a central abutment, i.e. the wristband attachment is connected to the housing in the middle at one point. While one of the two bracelet attachments can be rigidly connected to the housing as usual, the other bracelet attachment is attached to an end of the winding shaft protruding from the housing and can therefore be rotated relative to the housing.
  • the central abutment can be implemented, for example, by a bushing which has two oppositely arranged webs to which a part of a bracelet can be attached.
  • a bushing which has two oppositely arranged webs to which a part of a bracelet can be attached.
  • an oval eyelet can be attached to the socket, which is used to attach a part of the bracelet.
  • the winding shaft can for example have a flange to which the bushing is detachably fastened.
  • the winding shaft is operatively connected to a tension spring of the clockwork through a winding gear which has a total gear ratio i Ges , the amount of which is less than or equal to 1.
  • a transmission is to be understood as any device that transmits a rotary movement of the bracelet attachment to the tension spring of the clockwork, so that the tension spring is tensioned.
  • elevator gears are implemented in mechanical clocks by a gear train, ie an arrangement of interacting (larger) gears and (smaller) drives, each of which forms a gear stage in pairs.
  • the winding gear has an overall gear ratio i Ges , the amount of which is greater than 1, in order to keep the torque to be applied when winding it low.
  • the number of revolutions of the winding shaft required for complete winding is very high.
  • the proposed solution in which, due to the size of the bracelet attachment, relatively large torques can be generated on the winding shaft much more easily than with a conventional crown, much fewer revolutions are now required for complete winding.
  • the elevator gear has a freewheel lock which enables the tension spring to be wound up by intermittently rotating the elevator shaft forwards and backwards.
  • the bracelet attachment with the attached bracelet does not have to be operated in full revolutions. Rather, it is sufficient that the bracelet attachment is rotated alternately, for example, a quarter turn forwards and a quarter turn backwards, which improves the manageability of the elevator.
  • the freewheel ratchet can have a freewheel hub with an externally toothed freewheel drive, a freewheel pawl spring attached to the freewheel hub, which acts on a freewheel pawl, and an externally toothed freewheel wheel with an internal ratchet into which the freewheel pawl engages, include.
  • the elevator gear In order to avoid overloading the tension spring during winding, provision can also be made for the elevator gear to have a torque limiter, for example a slip clutch.
  • a torque limiter for example a slip clutch.
  • Such a slip clutch can be implemented, for example, in that the mainspring is arranged in a barrel which comprises a spring core driven by the winding gear and a barrel drum driving the clockwork, the spring core being arranged in the barrel drum and connected to one end of the mainspring and the the other end of the mainspring has a sliding bridle arranged to slide in the barrel drum.
  • the barrel is a component that holds the mainspring.
  • the barrel can, for example, comprise a barrel drum with external teeth, a barrel cover and a spring shaft with a spring core.
  • the inner end of the drive spring can, for example, be suspended from a hook of the spring core.
  • the outer end of the drive spring can then be attached to the inner wall of the barrel drum by a slip-bridle which begins to slide on the inner wall of the barrel drum when a threshold value of the torque acting on the mainspring during winding is exceeded.
  • a slip bridle also called sliding bridle or spring bridle, describes a specific design of the outer attachment end of the drive spring in order to achieve a force-fit, sliding spring attachment. It is made of a piece of spring band, for example existing slip bridle directed against the direction of movement of the drive spring and connected to it at one end when the drive spring is tensioned and fully wound on the inner wall of the barrel drum. As the lift continues, it slides along this surface, thereby preventing the drive spring from being overstressed.
  • the winding gear has a spring lock which prevents the tension spring from relaxing again immediately after winding without driving the clockwork.
  • the spring ratchet can have a ratchet wheel connected to the spring core with external ratchet teeth, a ratchet pawl engaging the ratchet ratchet, and a ratchet spring acting on the ratchet pawl.
  • the locking toothing is advantageously dimensioned in such a way that the bracelet attachment attached to the winding shaft has a clearance angle without function, i.e. without effect on the elevator gear, which can be, for example, ⁇ 20 °.
  • the winding shaft is not arranged parallel to a plane spanned by the dial. This makes it possible to arrange the bracelet attachment used for winding on the winding shaft also not parallel to the plane of the dial, as is otherwise usual for bracelet attachments, so that the underside of the watch follows the contour of the arm of a wearer of the watch. If the winding shaft were aligned parallel to the dial, as is customary in known watches, the bracelet attachment would also extend away from the housing in this direction.
  • the eyelet can either be fixed obliquely or articulated and thus pivotably attached to the socket, so that the desired effect also occurs for configurations in which the winding shaft is aligned parallel to the plane of the dial.
  • a winding drive with bevel gearing which is arranged on the end of the winding shaft located inside the housing, engages in a transmission wheel, which has a bevel gearing and a Has spur gearing.
  • the transmission wheel can then absorb the torque from the bevel drive of the elevator shaft via its bevel gearing and pass it on to the next gear element, for example the free-wheel drive of a free-wheel locking mechanism, via its face gearing.
  • the movement can be set in a known manner by means of the winding shaft, i.e. by actuating the wrist strap attachment attached to it.
  • an additional adjusting shaft with a crown arranged on the outside of the housing is provided for adjusting the clockwork.
  • the bracelet attachment attached to the winding shaft is used exclusively to wind the clockwork and the clockwork is only set using the additional adjusting shaft.
  • the housing 1 shown has, as usual, a bracelet attachment 3 at the 12 o'clock position and at the 6 o'clock position.
  • the bracelet fastenings 3 are designed with a central impact.
  • the central abutment is formed by a bush 6, from which two opposing webs 4 extend laterally, the free ends of which are delimited by web screws 5.
  • the bracelet attachment 3 attached at the 12 o'clock position can be rotated relative to the housing 1 about the central abutment, and the bracelet attachment 3 attached at the 6 o'clock position is attached non-rotatably relative to the housing 1.
  • the dial spans a plane that corresponds to the plane of the drawing of the top view.
  • the bracelet attachments 3 are arranged non-parallel relative to this plane, i.e. inclined.
  • an adjusting crown 2 is arranged on the edge of the housing 1 at the 10 o'clock position, which is connected to an adjusting shaft leading into the housing 1, but which is only used for Setting the clock, ie for setting the time, is used.
  • the winding shaft 8 carries at its end protruding from the housing 1 a flange 7 to which the socket 6 of the bracelet attachment 3 is attached. As a result, this bracelet attachment 3 is rotatable relative to the housing, and a rotation of this bracelet attachment 3 causes a corresponding rotation of the winding shaft 8.
  • the Fig. 3 and 4th show the entire elevator gear connected to the elevator shaft 8.
  • the elevator shaft 8 carries an elevator drive 9 with bevel teeth. This drives a chain of gears, which is translated so that three full revolutions of the winding shaft 8 are sufficient to fully tension the tension spring (not shown) of the movement. Since it is not easy to handle to perform three full revolutions, a free-wheeling lock 11 is inserted into this chain of wheels, which allows the elevator to be lifted by briefly turning the bracelet attachment 3 back and forth.
  • the mainspring Since much more power can be transmitted when pulling the bracelet through the good frictional connection between the bracelet and the fingers than with a crown, the mainspring must be protected by a torque limiter. In the simplest case, this can be a slip bridle in the barrel 21.
  • the main advantage lies in the good grip and the small number of quarter turns that are necessary for winding.
  • the central introduction of the rotatable bracelet attachment 3 into the housing 1 allows a graceful design of the watch that is advantageous for ladies' watches.
  • the elevator gear has a wheel chain which, on the one hand, engages in the toothing of the elevator drive 9 of the elevator shaft 8 and transfers the force and rotary motion to the spring core 21 of the barrel 20.
  • the transmission wheel 10 has a bevel toothing in which the elevator drive 9 of the elevator shaft 8 engages, and a spur toothing which engages in the freewheel drive 12 of the freewheel locking mechanism 11. As a result, the transmission wheel 10 absorbs the force and rotary movement from the winding shaft 8 and forwards it to the freewheel ratchet 11.
  • the freewheel drive 12 sets a freewheel hub 13 with an internal ratchet, consisting of a freewheel pawl 14 and a freewheel pawl spring 15, in rotation.
  • the freewheel pawl 14 engages the internal toothing of the freewheel 16, which is freely rotatably mounted on the freewheel hub 13, but this is done in such a way that a positive force transmission is only possible in one direction. In the other direction of rotation, the freewheel pawl 14 slides without power transmission over the internal teeth of the freewheel wheel 16.
  • the external toothing of the freewheel 16 engages in the intermediate drive 18, which is connected to the intermediate gear 19 in a rotationally fixed manner.
  • This pair of wheels is used to make the rotary movement to translate into fast speed and thereby increase the elevator speed.
  • the intermediate gear 19 ultimately transmits force and rotary motion to the toothed spring core 21 of the barrel 20, on whose spring hook the tension spring is attached.
  • An overhead ratchet wheel 22 is screwed to the spring core 21, which, in cooperation with a pawl 23 and a pawl spring 24, prevents the spring core 21 from rotating back and the tension spring from being relaxed again in an uncontrolled manner.
  • the mainspring is wound in the barrel drum 25 of the barrel 20 and transmits the force to the barrel drum 25 of the movement through the attached outer end of the spring band.
  • the spring is not attached via a static fixation, but via a force-dependent slip clutch. If the maximum spring torque is exceeded, the slip clutch slides in the barrel 20 and thus prevents the mechanical system from being destroyed if the winding process is continued.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)

Claims (12)

  1. Montre-bracelet, comprenant une boîte (1), un mouvement à remontage manuel, disposé dans la boîte (1), ainsi que deux attaches de bracelet (3) attachées à la boîte (1), une attache de bracelet (3) étant reliée à une tige de remontoir (8) du remontoir à main, caractérisée en ce que la tige de remontoir (8) est en liaison fonctionnelle avec un ressort de traction du mouvement par un engrenage de remontoir qui présente un rapport de transmission total iGes dont la valeur est inférieure ou égale à 1.
  2. Montre-bracelet selon la revendication 1, caractérisée en ce que l'attache de bracelet (3) présente une butée centrale.
  3. Montre-bracelet selon la revendication 2, caractérisée en ce que la butée centrale est réalisée par une douille (6) qui présente deux barrettes (4) disposées à l'opposé, et la tige de remontoir (8) présente une bride (7) à laquelle la douille (6) est fixée de manière amovible.
  4. Montre-bracelet selon l'une quelconque des revendications 1 à 3, caractérisée en ce que l'engrenage de remontoir présente un arrêtage de roue libre (11) qui permet de remonter le ressort de traction par une rotation avant et une rotation arrière intermittentes de la tige de remontoir (8).
  5. Montre-bracelet selon la revendication 4, caractérisée en ce que l'arrêtage de roue libre (11) comprend un moyeu de roue libre (13) doté d'un pignon de roue libre à denture extérieure (12), un ressort de cliquet de roue libre (15) fixé au moyeu de roue libre (13) et agissant sur un cliquet de roue libre (14), ainsi qu'une roue libre à denture extérieure (16) dotée d'une denture d'arrêtage intérieure dans laquelle s'engrène le cliquet de roue libre (14).
  6. Montre-bracelet selon l'une quelconque des revendications 1 à 5, caractérisée en ce que l'engrenage de remontoir présente une limitation de couple, par exemple un accouplement à friction.
  7. Montre-bracelet selon la revendication 6, caractérisée en ce que le ressort de traction est disposé dans un barillet (20) qui comprend une bonde (21) entraînée par l'engrenage de remontoir et un tambour de barillet (25) entraînant le mouvement, la bonde (21) étant disposée dans le tambour de barillet (25) et étant reliée à une extrémité du ressort de traction, et l'autre extrémité du ressort de traction présentant une bride coulissante disposée de manière coulissante dans le tambour de barillet (25).
  8. Montre-bracelet selon l'une quelconque des revendications 1 à 7, caractérisée en ce que l'engrenage de remontoir présente un arrêtage de ressort qui empêche une détente incontrôlée du ressort de traction.
  9. Montre-bracelet selon la revendication 8, caractérisée en ce que l'arrêtage de ressort présente une roue d'arrêtage (22) reliée à la bonde (21) et dotée d'une denture d'arrêtage extérieure, un cliquet d'arrêtage (23) s'engrenant dans la denture d'arrêtage, et un ressort de cliquet d'arrêtage (24) agissant sur le cliquet d'arrêtage (23).
  10. Montre-bracelet selon l'une quelconque des revendications 1 à 9, caractérisée en ce que la tige de remontoir (8) est disposée de manière non parallèle à un plan défini par le cadran.
  11. Montre-bracelet selon la revendication 10, caractérisée en ce qu'un pignon de remontoir (9) à denture conique qui est disposé à l'extrémité de la tige de remontoir (8), située à l'intérieur de la boîte (1), s'engrène dans une roue de transmission (10) qui présente une denture conique et une denture frontale.
  12. Montre-bracelet selon l'une quelconque des revendications 1 à 11, caractérisée en ce qu'une tige de mise à l'heure supplémentaire, dotée d'une couronne de mise à l'heure (2) disposée à l'extérieur de la boîte, pour mettre le mouvement à l'heure est prévue.
EP17159355.1A 2017-03-06 2017-03-06 Montre-bracelet à remontage manuel Active EP3373079B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17159355.1A EP3373079B1 (fr) 2017-03-06 2017-03-06 Montre-bracelet à remontage manuel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17159355.1A EP3373079B1 (fr) 2017-03-06 2017-03-06 Montre-bracelet à remontage manuel

Publications (2)

Publication Number Publication Date
EP3373079A1 EP3373079A1 (fr) 2018-09-12
EP3373079B1 true EP3373079B1 (fr) 2021-04-28

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Application Number Title Priority Date Filing Date
EP17159355.1A Active EP3373079B1 (fr) 2017-03-06 2017-03-06 Montre-bracelet à remontage manuel

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EP (1) EP3373079B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111459012A (zh) * 2020-04-26 2020-07-28 郑州工程技术学院 一种便于佩戴的智能翻译手表及使用方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE838127C (de) * 1952-03-27 Metall-, Guß- u. Preßwerk Heinrich Diehl G.m.b.H., Nürnberg Klappschlüssel für Uhren, Laufwerke u. dgl
US835710A (en) * 1906-01-09 1906-11-13 American Waltham Watch Company Spring-winding mechanism.
US1354179A (en) * 1920-04-22 1920-09-28 Charles I Furbish Stem winding and setting mechanism for watches
GB393604A (en) * 1931-12-05 1933-06-06 Ellis Bernard Rook Improvements relating to wristlet watches
GB852225A (en) * 1957-08-20 1960-10-26 Otto Epple Automatic winding device for wrist watches
CH415474A (fr) * 1964-06-04 1967-01-13 Ernest Morf Montre avec tige en deux pièces
JPS495365A (fr) * 1972-05-01 1974-01-18
US20050249051A1 (en) * 2004-03-24 2005-11-10 Philippe Cogoli Timepiece
IT1395070B1 (it) * 2009-08-11 2012-09-05 Galli Orologio da polso in cui l'asse della corona e' disposto in posizione inclinata rispetto al piano contenente il quadrante
CH702924B1 (fr) * 2010-06-03 2011-10-14 Patek Philippe Sa Geneve Mobile à embrayage unidirectionnel, mécanisme de remontage et pièce d'horlogerie comportant ledit mobile.
CH709910A2 (fr) * 2014-07-22 2016-01-29 Montres Breguet Sa Barillet d'horlogerie comportant une bride élastique glissante.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
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