EP2360534A2 - Gehäuse für Uhrwerk mit automatischem Aufziehmechanismus, das über eine Feststellvorrichtung der Schwungmasse verfügt - Google Patents

Gehäuse für Uhrwerk mit automatischem Aufziehmechanismus, das über eine Feststellvorrichtung der Schwungmasse verfügt Download PDF

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Publication number
EP2360534A2
EP2360534A2 EP11153255A EP11153255A EP2360534A2 EP 2360534 A2 EP2360534 A2 EP 2360534A2 EP 11153255 A EP11153255 A EP 11153255A EP 11153255 A EP11153255 A EP 11153255A EP 2360534 A2 EP2360534 A2 EP 2360534A2
Authority
EP
European Patent Office
Prior art keywords
movable portion
box according
control member
cam
oscillating mass
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.)
Withdrawn
Application number
EP11153255A
Other languages
English (en)
French (fr)
Inventor
Philippe Antille
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.)
Ball Watch Co SA
Original Assignee
Ball Watch Co 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.)
Filing date
Publication date
Application filed by Ball Watch Co SA filed Critical Ball Watch Co SA
Publication of EP2360534A2 publication Critical patent/EP2360534A2/de
Withdrawn legal-status Critical Current

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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
    • G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
    • G04B43/002—Component shock protection arrangements
    • 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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • 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
    • G04B5/00—Automatic winding up
    • G04B5/24—Protecting means preventing overwinding
    • G04B5/245—Protecting means preventing overwinding by locking the moving weight

Definitions

  • the present invention relates to a timepiece box intended to accommodate an automatic winding type watch movement by using rotary movements made by an oscillating mass along an axis X1. More particularly, the box comprises a device for locking the oscillating mass.
  • the large rotor mass or oscillating weight of an automatic movement can lead to different problems.
  • the corresponding shock may cause brief oscillations of the oscillating mass, in a direction other than that of its ordinary oscillations, which may cause damage to the watch movement. Not only can the shaft carrying the oscillating weight be broken, but components of the watch movement can also be damaged.
  • the significant inertia of the oscillating weight can be inconvenient for the wearer of a timepiece during the practice of certain sports, such as golf. Indeed, when the wearer of the timepiece makes violent movements with his arm carrying the timepiece, the oscillating mass can be launched in a high speed rotation, which can be felt by the wearer of the piece and can disturb it.
  • a main object of the present invention is to overcome the disadvantages of self-winding watch movements known from the prior art, by making it possible to produce a timepiece in which movements of the oscillating mass can be blocked in certain risk situations.
  • the present invention relates more particularly to a box of the type mentioned above, characterized in that it comprises a bottom in which is arranged a device for locking the oscillating mass comprising, on the inner face of the bottom, a stop member, having at least one movable portion between at least first and second positions with reference to the bottom, and on its outer face, a control member arranged to control the movements of the movable portion, such that this the last is likely to cooperate with the oscillating mass of the watch movement to lock it in one of its positions.
  • the present invention also relates to a timepiece comprising such a box.
  • the wearer of the timepiece according to the invention can decide to lock the oscillating weight of the watch movement when he foresees the possible occurrence of a risky situation or when he practices a sport in which the inadvertent movements of the oscillating mass are likely to hinder it.
  • the stop member is arranged such that its movable portion can move in a direction substantially parallel to the axis X1.
  • control member is arranged to exert pressure on the movable portion, in response to an action of a user, tending to move in the direction of the oscillating mass.
  • the stop member comprises a cam integral with the external control member and arranged to exert pressure on the movable portion in response to an action of a user on the external control member to arranging the movable portion in its second, locking position.
  • the external control member can be actuated in rotation along the axis X1, between first and second positions, and preferably comprises a barrel passing through the bottom and secured to the cam.
  • the movable portion comprises a plate arranged to be movable in translation in a direction substantially parallel to the axis X1 and comprising at least one hole arranged to accommodate the boss when the oscillating weight is not locked.
  • the barrel has, at least locally, a complementary section in the form of a hole in the cam and in which this section is engaged to be integral in rotation with the cam, a screw housed in the end the barrel ensuring the axial retention of the cam on the barrel.
  • control member may comprise a disc provided with at least one gripping surface arranged to allow it to rotate with reference to the axis X1.
  • FIG. 1 is an exploded perspective view of a portion of a watch movement case according to a preferred embodiment of the present invention
  • the figure 2 represents a perspective view of a first construction detail of the box as illustrated in the figure 1 ;
  • the figure 3 represents a front view of a second construction detail of the box as illustrated on the figure 1 ;
  • FIG. 4a represents a sectional view, along a transverse plane passing through the 6 o'clock and 12 o'clock positions, of a timepiece incorporating a device for locking the oscillating mass according to the present invention, in a first configuration
  • the figure 4b represents a sectional view along the same sectional plane as that of the figure 4a , but seen from the opposite side, in a second configuration of the timepiece.
  • the figure 1 is an exploded perspective view of a portion of a watch movement case, particularly its bottom, according to a preferred embodiment of the present invention. More specifically, it is intended to implement the object of the invention in connection with a self-winding watch movement in which the rotary movements of an oscillating weight are used to perform the reassembly.
  • the box has a middle part (numerical reference 1 on the Figures 4a and 4b ) on which a bottom 2 is intended to be mounted.
  • the latter can be clipped, screwed or held against the middle by means of several screws without departing from the scope of the present invention.
  • a device for locking the oscillating mass is arranged on the bottom 2. This comprises a stop member arranged on the inner side of the bottom and comprising first, second and third plates 4, 5, 6 superimposed.
  • a control member 8 is arranged on the outer side of the bottom 2 to control the stop member.
  • the bottom 2 and each of the plates 4, 5 and 6 are provided with a central hole 9, 10, 11 and 12, adapted to house a barrel 14 integral with the control member 8.
  • the barrel 14 is pierced and tapped at its free end to cooperate with a screw 15, provided to assemble the plate 4 to the control member 8.
  • the holes 11 and 12 have dimensions larger than the head of the screw 15 so that the plates 5 and 6 are not integral with the control member 8.
  • the end of the barrel 14 is shaped like a nut to cooperate with the hole 10 of the plate 4, so that the control member 8 and the plate 4 are integral in rotation.
  • control member 8 is interposed between the control member 8 and the bottom 2, for example to improve the sliding and sealing between these two elements.
  • control member 8 can be rotated from outside the box between first and second extreme positions.
  • control member 8 When the control member 8 is actuated in rotation, to be placed in its second position, it drives the plate 4 in rotation through its end shaped nut. The bosses 18 are then extracted from the holes 19, 20 and act on the plate 5, in the manner of a cam, to move it in translation towards the watch movement.
  • the plate 5 has three lugs 22, intended to be engaged in housings adapted to the middle, to prevent rotation of the plate when the control member 8 is actuated.
  • the plate 6 is thus moved in contact with the oscillating mass of the watch movement to lock it.
  • This plate which is optional, acts as a buffer member and can be covered with a soft material, such as Teflon (trademark) to act on the oscillating mass without damaging it.
  • the control member 8 further comprises two limiting fingers 24 on its internal face, the function of which will be explained in connection with the detailed description of the figure 3 .
  • the figure 2 represents a perspective view of the control member 8 which has just been described in connection with the figure 1 , while it is visible by its external face.
  • the control member 8 has gripping surfaces 25 for actuating it in rotation and defined by the flanks of the blades of a helix 26 formed on the outer face of the control member.
  • the figure 3 represents a view from above of the outer face of the bottom 2 illustrated on the figure 1 .
  • the bottom 2 has a recess 30, in the form of a disc, for housing the control member 8.
  • two slots 32 in the form of circular portions are formed in the bottom 2 to receive the limiting fingers 24 and define with them the limits of the stroke that can perform the control member in rotation.
  • the bottom 2 has a circular groove 34 for housing a seal, inserted between the control member 8 and the bottom 2.
  • inscriptions 35 are provided on the bottom, advantageously but not mandatory, to cooperate with an index (reference numeral 36 on the figure 2 ) and indicate to a user in which position is the controller at a given moment.
  • FIGS. 4a and 4b represent, in similar sectional views, in a transverse plane passing through the positions 6 o'clock and 12 o'clock, respectively on one side and the other of the cutting plane, a timepiece 40 incorporating a locking device the oscillating mass according to the present invention, respectively in first and second configurations.
  • the figure 4a illustrates the timepiece while the oscillating mass 41 is free to turn while the figure 4b illustrates the configuration in which the oscillating weight is locked.
  • control member 8 is rotated 90 degrees.
  • the bosses 18 are then rapidly extracted from the holes 19, 20 and exert pressure on the plate 5 to lift it towards the watch movement 42.
  • the plate 6 is thus brought into contact with the oscillating mass 41 to lock it.
  • the timepiece 40 is illustrated here with a configuration providing protection against magnetic fields, without limitation. More specifically, this protection is provided in particular by a ring 44 disposed between the caseband 1 and the watch movement 42 and providing, in collaboration with additional elements, a magnetic shielding of the watch movement. It emerges Figures 4a and 4b that the tabs 22 of the plate 5 cooperate here with notches (not visible) formed in the ring 44. In addition, springs are preferably provided in the notches to exert pressure on the tabs 22 of the plate 5 so as to tend to push the latter towards the bottom 2 of the box.
  • the plate 5 is made of a magnetic conductive material and cooperates with the ring 44 to provide anti-magnetic shielding on the bottom side of the box.
  • the timepiece 40 allows its wearer to lock or not the oscillating mass 41, by a very simple manipulation of the control member 8 arranged on the bottom of the box, depending on the level of physical activity envisaged. Indeed, for a normal average level of activity, the oscillating mass 41 can be left free to recharge the watch movement, whereas when a high activity level is envisaged or a significant risk of sudden movements is estimated, the mass oscillating can be locked to prevent its brutal movements causing damage in the watch movement.
  • the foregoing description attempts to describe a particular embodiment by way of non-limiting illustration and the invention is not limited to the implementation of certain particular features which have just been described, for example the forms specifically illustrated and described for the plates 4, 5 and 6 or for the control member 8.
  • the skilled person can of course implement the locking device described above in a room d watchmaking does not include shielding against magnetic fields without departing from the scope of the invention.
  • the plate 5 may comprise at least one notch cooperating with a suitable shape of the caseband, as an alternative to the use of the tabs 22, to ensure its maintenance in rotation along the axis X1.
  • the plate 5 is made to be bi-stable, that is to say it is deformed suddenly, when the bosses are extracted from the holes 19, 20, to enter contact with the oscillating mass and lock it, either directly or via an additional element (such as the plate 6).
  • the rest position of the plate 5 would be that illustrated on the figure 4a which means that when bosses are repositioned next to the holes 19, 20, the plate spontaneously resumes its shape of the figure 4a to release the oscillating mass.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
EP11153255A 2010-02-15 2011-02-03 Gehäuse für Uhrwerk mit automatischem Aufziehmechanismus, das über eine Feststellvorrichtung der Schwungmasse verfügt Withdrawn EP2360534A2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00181/10A CH702654B1 (fr) 2010-02-15 2010-02-15 Boîte pour mouvement horloger à remontage automatique comportant un dispositif de verrouillage de la masse oscillante.

Publications (1)

Publication Number Publication Date
EP2360534A2 true EP2360534A2 (de) 2011-08-24

Family

ID=44080358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11153255A Withdrawn EP2360534A2 (de) 2010-02-15 2011-02-03 Gehäuse für Uhrwerk mit automatischem Aufziehmechanismus, das über eine Feststellvorrichtung der Schwungmasse verfügt

Country Status (2)

Country Link
EP (1) EP2360534A2 (de)
CH (1) CH702654B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017026418A (ja) * 2015-07-21 2017-02-02 カシオ計算機株式会社 ケースおよび時計
JP2017053831A (ja) * 2015-09-10 2017-03-16 カシオ計算機株式会社 部品保護装置および時計

Non-Patent Citations (1)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017026418A (ja) * 2015-07-21 2017-02-02 カシオ計算機株式会社 ケースおよび時計
JP2017053831A (ja) * 2015-09-10 2017-03-16 カシオ計算機株式会社 部品保護装置および時計

Also Published As

Publication number Publication date
CH702654B1 (fr) 2015-10-30
CH702654A2 (fr) 2011-08-15

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