EP0026740B1 - Couronne vissée, tournant autour de son axe par rapport à un boîtier, en particulier pour instruments horaires - Google Patents

Couronne vissée, tournant autour de son axe par rapport à un boîtier, en particulier pour instruments horaires Download PDF

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Publication number
EP0026740B1
EP0026740B1 EP19800810294 EP80810294A EP0026740B1 EP 0026740 B1 EP0026740 B1 EP 0026740B1 EP 19800810294 EP19800810294 EP 19800810294 EP 80810294 A EP80810294 A EP 80810294A EP 0026740 B1 EP0026740 B1 EP 0026740B1
Authority
EP
European Patent Office
Prior art keywords
crown
sleeve
threaded part
threading
screwed
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.)
Expired
Application number
EP19800810294
Other languages
German (de)
English (en)
Other versions
EP0026740A1 (fr
Inventor
René Seguin
Ernst Meyer
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.)
CESSIONE;GRENCHEN S.A. MECO
Original Assignee
Meyer & Co AG
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 Meyer & Co AG filed Critical Meyer & Co AG
Publication of EP0026740A1 publication Critical patent/EP0026740A1/fr
Priority to JP14769381A priority Critical patent/JPS5784381A/ja
Application granted granted Critical
Publication of EP0026740B1 publication Critical patent/EP0026740B1/fr
Expired 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
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • G04B3/04—Rigidly-mounted keys, knobs or crowns
    • 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
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/10—Hermetic sealing of openings, joints, passages or slits of winding stems
    • G04B37/106—Hermetic sealing of openings, joints, passages or slits of winding stems of push buttons

Definitions

  • the present invention relates to a screwed crown rotatable about its axis with respect to a housing, particularly for timepieces.
  • a particularly large spring in the crown can be avoided if the crown is firmly connected to the actuating shaft or winding shaft, as is the case for. B. applies to the crown according to CH-B-468 663.
  • this known crown also requires a compression spring and the crown is not well guided in the released state.
  • Another disadvantage is that when the crown is screwed down or when the seal is loaded, the crown body and the elevator shaft connected to it are axially displaced, which in many cases poses problems and in any case requires a very precise cutting and mounting of the elevator shaft.
  • a pusher is known, the pusher body of which is firmly connected to a pusher rod and which is coupled non-rotatably but axially displaceably to a sleeve which is firmly connected to the housing.
  • a threaded ring is screwed to an external thread of the pusher body, which is screwed against the pusher body against the housing and thus the pusher body can be pressed outwards by compressing a pressure seal.
  • a thread on the outside of a pusher or crown body is undesirable, in particular because of the risk of contamination and also for aesthetic reasons.
  • a screwed crown according to the preamble of claim 1 is known from IT-A-539 643.
  • the threaded part is designed as a special, exposed within the crown ring that is screwed ver with an internal thread of the sleeve and acts directly on a pressure seal that rests in the sleeve against a collar of the elevator shaft.
  • the threads and the space between the crown and the threaded part are exposed and can be dirty and hardly cleaned.
  • the invention has for its object to provide a screwed crown, which can be screwed in a conventional manner by means of the crown body itself, which surrounds and protects the crown mechanism, and which each of the crown and any axial displacement of the actuating or winding shaft when screwing or Avoid unscrewing the crown.
  • Fig. 1 shows the crown body 1 and the crown neck 2, in which the elevator shaft 3 is screwed.
  • the sleeve 4 is firmly connected to the housing 5.
  • the upper part 6 of the sleeve 4 is offset and provided with a thread 7, in which a clamping nut 8 engages, which acts on a pressure seal 10 via a pressure ring 9.
  • the upper part 6 of the sleeve 4 is closed at the top by a stop ring 11.
  • the radial direction 14 which is located in a shoulder 12 of the crown body 1 and is pressed against the outer wall of the upper sleeve part 6 and held by a cover ring 13.
  • the upper part 15 of the crown neck 2 and the interior 16 of the clamping nut 8 are designed as a coupling, the parts of which are in engagement in the present case via hexagonal surfaces.
  • the parts of which are in engagement in the present case via hexagonal surfaces.
  • Lich it is possible Lich to form these two coupling parts as any polygonal toothing.
  • the winding crown is screwed on in a counterclockwise direction, which causes the clamping nut to move axially upwards and the pressure of the pressure seal is reduced accordingly. This allows the watch to be wound by turning the crown back and forth.
  • the crown is unscrewed as far as when it is pulled open and can then be pulled out and turned.
  • the crown neck coupling part 15 slides out of the clamping nut, as a result of which the crown can move freely without compressing the pressure direction.
  • the crown is brought into the winding position, the two coupling parts 15 and 16 intermeshing and then turned clockwise, as a result of which the clamping nut moves axially against the watch case and compresses the pressure seal.
  • the clamping nut is always in engagement with the thread of the sleeve upper part and the pressure seal 10 also performs a sealing function in the state of reduced pressure.
  • the screwed crown does not require a compression spring, which means that the force of the setting lever spring no longer plays a role in the watch, so that this crown can be used for any caliber.
  • the dimensions of the crowns can be freely adjusted, i.e. H. above all, be made smaller.
  • the sleeve is first installed in the watch case in a watertight manner, as is conventional, and then the winding shaft is cut to length and screwed in as in a normal, waterproof, unscrewed crown. The crown with the screwed-in winding shaft is then mounted in or via the sleeve in the movement.
  • the abrasion of the thread on the clamping nut and sleeve part 6 is prevented by the pressure seal from penetrating into the housing, but the clamping nut can also be made of an abrasion-resistant plastic, particularly in the case of electronic watches.
  • the clamping nut on the crown neck, as a result of which the upper sleeve part no longer has to be offset and the stop ring is dispensed with.
  • the entire packing consisting of the stop ring, clamping nut, pressure ring and pressure seal can be designed as a unit which is inserted into the sleeve by itself.
  • FIGS. 5 and 6 A further embodiment is shown in FIGS. 5 and 6, in which corresponding parts are identified in the same way as in FIGS. 1 to 4.
  • the neck of the crown is provided on the upper part with an external thread 17, which fits into an internal thread 18 of the clamping nut 8 ' intervenes.
  • This clamping nut 8 ' has in the lower part an external toothing 19 which non-rotatably but axially displaceably engages in a corresponding internal toothing 20 of the sleeve 4.
  • the clamping nut 8 ' acts above the pressure ring 9 on the pressure seal 10, which is arranged between the upper, inner end of the crown neck and the outer end of the sleeve 4.
  • Fig. 5 shows the crown in the released state, i. that is, the clamping nut 8 'is in the innermost position on the stop ring 11 and the seal 10 is relaxed, but still effective as a seal.
  • the crown can be turned easily, e.g. B. to wind up the clock.
  • the crown can also be pulled out, depending on the path, the seal 10 leaves the sleeve 4, 6 or remains in effect, and the crown can be turned slightly in the outer position to control other functions.
  • the crown is pressed inwards and then tightened, the clamping nut 8 'being screwed axially outwards and compressing the seal 10 via the pressure ring 9.
  • tooth ends can be tapered like a knife.
  • FIGS. 7 to 9 show a third embodiment. Corresponding parts are identified in the same way as in FIGS. 1 to 6, the actuating shaft or elevator shaft not being shown for the sake of simplicity.
  • a threaded ring 22 with an internal thread 23 and an inner flange 24 is riveted to the crown body 1.
  • the sealing ring 25 is supported on the flange 24 and, when unloaded, has the hexagonal cross section shown in FIGS. 7 and 9. Above the sealing ring 25 there is a pressure ring 26, on which a threaded sleeve 28 provided with an external thread 27 acts.
  • This threaded sleeve 28 is axially displaceable but non-rotatably connected to a coupling ring 29, which is provided on its inwardly directed flange with claws which engage axially disengageably in a ring of claws on the end face of the sleeve part 6.
  • FIG. 7 and 8 show the crown in the inner end position, the sealing ring 25 being relieved in FIG. 7 by the threaded ring 28 in its outermost position being in the stop on the coupling ring 29.
  • the threaded sleeve 28 can ge inwards screws and thus the sealing ring 25 are compressed, as shown in FIG. 8.
  • the threaded sleeve 28 is non-rotatably coupled to the sleeve 4, 6 by sitting non-rotatably on the coupling ring 29 and this is non-rotatably coupled to the sleeve 4, 6.
  • the crown and the control shaft 3, which is rigidly connected to it, are not axially displaced.
  • the crown is secured in its inner end position by the increased radial pressure of the sealing ring against unwanted displacement into an outer position.
  • the cross-sectional shape of the sealing ring shown results in a particularly favorable sealing effect with a relatively high specific pressure against the sealing surfaces when the seal is relieved, without significantly impeding the rotation of the crown, and it also results in particularly high radial pressures and thus good sealing and adhesion of the crown in a loaded state . It is also particularly favorable because it fills the space between the flange 24 and the pressure ring 26 even after slight deformation, ie after a small path of the threaded ring 28.
  • the arrangement of the seal between the sleeve 4, 6 and the crown has a favorable effect in that the entire mechanism of the crown lies within the seal and is therefore optimally protected. Replacing a broken crown is easy.
  • the crown With the seal relieved according to FIG. 7, the crown can be pulled outwards into one or two latching positions, for example for setting the hands and for correcting the date.
  • the threaded sleeve 28 and the coupling ring 29 are taken outwards and after a very short axial travel the coupling ring 29 is clearly disengaged from the claws of the sleeve 4, 6.
  • the crown can now be freely rotated together with parts 28 and 29, i. that is, there is no relative rotation between the crown body 1 and the threaded ring 28.

Claims (9)

1. Couronne vissée, tournant autour de son axe par rapport à un boîtier (5), en particulier pour instruments horaires, comprenant un corps de couronne (1) et une partie filetée (8, 28) non liée rigidement avec le corps de couronne et vissée en permanence avec un contre-filetage (7, 27), dont le corps de couronne (1) est lié rigidement à une tige de mise à l'heure ou de remontage (3), et dans laquelle, dans la condition vissée, un joint agissant comme joint de pression (10, 25) est comprimé par la partie filetée (8, 28), la couronne étant fixée à une douille (4,6) liée rigidement au boîtier (5), caractérisée en ce que la partie filetée (8, 28), en condition déserrée, peut être rendue active et inactive par un déplacement axial relativement au corps de couronne (1) et en ce que la partie filetée (8, 28), lorsque active, peut se déplacer axialement par rapport au boîtier et/ou au corps de couronne par une rotation du corps de couronne dans l'une et l'autre direction, pour charger ou décharger le joint de pression (10, 25) dans la couronne.
2. Couronne selon la revendication 2, caractérisée en ce que le joint de pression est disposé entre la douille fixe (4, 6) et un col (2) du corps de couronne (1) et qu'il est comprimable à l'aide de la partie filetée active en forme d'écrou de serrage (8, 8') déplaceable axialement par rapport à la douille (4,6).
3. Couronne selon la revendication 2, caractérisée en ce que l'écrou de serrage (8) engrène avec un filetage intérieur (7) de la douille (4, 6) agissant comme contrefiletage et qu'il est connectable avec le corps de couronne de manière déplaceable axialement mais non en rotation.
4. Couronne selon la revendication 3, caractérisée en ce que le joint de pression (10), un anneau de pression (9) et l'écrou de serrage (8') forment ensemble avec un unité séparée à insérer.
5. Couronne selon la revendication 2, caractérisée en ce qu'au moins la partie filetée (8') est engagée avec le col (2) de la couronne.
6. Couronne selon la revendication 1, caractérisée en ce que la partie filetée (8', 28) est connectable avec la douille fixe (4, 6).
7. Couronne selon la revendication 6, caractérisée en ce que le contre-filetage est un filetage extérieur (17) du col (2) de la couronne et qu'il engrène avec un filetage intérieur de la partie filetée en forme d'écrou de serrage (8') qui est connectable de manière dèplaceable axialement mais non en rotation avec la douille (4,6), lorsque ledit écrou de serrage est actif.
8. Couronne selon la revendication 6, caractérisée en ce que la partie filetée (28) se trouve à l'extérieur de la douille fixe (4, 6) et qu'elle. comprend un filetage extérieur (27) qui est vissé avec un filetage intérieur (23) du corps de couronne (1) agissant comme contrefiletage.
9. Couronne selon la revendication 8, caractérisée en ce que la partie filetée (28) est liée de manière déplaceable axialement mais non en rotation avec un anneau de couplage (29) qui, en condition active, embraye axialement avec une partie de couplage de la douille fixe (4,6).
EP19800810294 1979-09-28 1980-09-19 Couronne vissée, tournant autour de son axe par rapport à un boîtier, en particulier pour instruments horaires Expired EP0026740B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14769381A JPS5784381A (en) 1980-09-19 1981-09-18 Crown

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP79810107 1979-09-28
EP79810107 1979-09-28

Publications (2)

Publication Number Publication Date
EP0026740A1 EP0026740A1 (fr) 1981-04-08
EP0026740B1 true EP0026740B1 (fr) 1984-03-14

Family

ID=8186533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800810294 Expired EP0026740B1 (fr) 1979-09-28 1980-09-19 Couronne vissée, tournant autour de son axe par rapport à un boîtier, en particulier pour instruments horaires

Country Status (2)

Country Link
EP (1) EP0026740B1 (fr)
DE (1) DE3066998D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH655826GA3 (en) * 1984-11-15 1986-05-30 Screw cap
EP1280023B1 (fr) * 2001-07-28 2008-12-31 Richemont International S.A. Couronne étanche pour boîte de montre
EP3279745B1 (fr) * 2016-08-02 2023-06-14 Meco S.A. Couronne vissee orientable

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT539643A (fr) *

Also Published As

Publication number Publication date
EP0026740A1 (fr) 1981-04-08
DE3066998D1 (en) 1984-04-19

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