EP2605084A2 - Overmoulded clock journal bearing - Google Patents

Overmoulded clock journal bearing Download PDF

Info

Publication number
EP2605084A2
EP2605084A2 EP12194356.7A EP12194356A EP2605084A2 EP 2605084 A2 EP2605084 A2 EP 2605084A2 EP 12194356 A EP12194356 A EP 12194356A EP 2605084 A2 EP2605084 A2 EP 2605084A2
Authority
EP
European Patent Office
Prior art keywords
revolution
core
cage
bearing
cavity
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.)
Granted
Application number
EP12194356.7A
Other languages
German (de)
French (fr)
Other versions
EP2605084A3 (en
EP2605084B1 (en
Inventor
Laurent Kaelin
Julien Moulin
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP12194356.7A priority Critical patent/EP2605084B1/en
Publication of EP2605084A2 publication Critical patent/EP2605084A2/en
Publication of EP2605084A3 publication Critical patent/EP2605084A3/en
Application granted granted Critical
Publication of EP2605084B1 publication Critical patent/EP2605084B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • 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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G04B31/004—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor characterised by the material used
    • G04B31/016—Plastic bearings
    • 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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G04B31/02—Shock-damping bearings
    • 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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G04B31/06—Manufacture or mounting processes

Definitions

  • the invention relates to a molded overmolded clock bearing.
  • the invention also relates to a watch movement comprising at least one such smooth bearing.
  • the invention also relates to a timepiece comprising at least one such smooth bearing.
  • the invention also relates to a method for manufacturing a molded overmolded sliding bearing.
  • the invention relates to the field of watchmaking, and more particularly the field of guides and bearings.
  • Bearing lubrication is a difficult area that requires care, and maintenance in service.
  • the document CH 559 383 B5 on behalf of PORTESCAP illustrates a shock-absorbing bearing for a watch, with a core which is an elastic part, without play between the different concentric cages that this bearing comprises.
  • the document FR 1 579 777 A in the name of FRATELLI BORLETTI describes a pendulum clock pivot with a plastic disk serving as counter-stone support of the rounded end of a pendulum. This disc is housed in a cavity of a seat bearing an annular stone. This counter-stone disc can be injection molded.
  • the document FR 1 587 976 A in the name of KURUCZ AND MATTHEY discloses a watch shock absorber bearing with a solid plastic bearing housed in a central recess, similarly to CH 559 383 B5 cited above. During the removal of the plastic material, the material is tightened around a rib and assures the assembly without play of the bearing body in its support.
  • PORTESCAP describes a bearing for clockwork mobile pivot, close to the document FR 1 587 976 A above, with a modified background shape.
  • the invention proposes to circumvent these problems of the prior art, by proposing cheaper bearings, with a reduced number of components, little sensitive to shocks, and not requiring any particular adjustment during their assembly.
  • the invention relates to a overmolded overmolded clock bearing, characterized in that it comprises a plastic core injected into a cavity of revolution that includes an outer cage, and in that said core is movable with a residual functional game and permanent relative to said outer cage, and indisputedmontable relative to said outer cage.
  • said sliding bearing further comprises at least one inner cage contained in said cavity, and said plastic core is injected between said inner race and said outer race and said core is movable with a residual and permanent functional clearance with respect to said inner cage, and indisputedmontable with respect to said inner cage.
  • said core is delimited by an outer surface of revolution that includes said inner cage and an inner surface of revolution that includes said outer cage.
  • said outer surface of revolution and said inner surface of revolution are coaxial around a same axis of revolution.
  • said outer surface of revolution and / or said inner surface of revolution comprises at least one groove or a shoulder of revolution for the immobilization of said core in the direction of an axis of revolution common to said surface. exterior of revolution and said inner surface of revolution.
  • the constituent plastic material of said core has a shrinkage coefficient of between 2.0% and 3.0% which determines the functional clearance of said plain bearing between said inner race and said core on the one hand, and between said outer cage and said core on the other hand.
  • said sliding bearing consists exclusively of said inner race, said core, and said outer race.
  • a plurality of inner cages having contact surfaces of revolution coaxial with each other and with said cavity around a same axis of revolution, said inner cages being threaded one in the other and separated, said cavity for the outermost of them, and two by two for the others, each time by a plastic core injected into a chamber delimited by the internal volume of the outermost cage , and by the outer volume of the innermost cage.
  • the invention also relates to a watch movement comprising at least one such smooth bearing.
  • the invention also relates to a timepiece comprising at least one such smooth bearing.
  • said injection or casting chamber is defined by an outer surface of revolution that comprises said inner cage and by an inner surface of revolution that comprises said cage external, and by the addition of closure surfaces associated with said cavity and said inner cage respectively bordering said inner surface of revolution and said outer surface of revolution; and after complete removal of said plastic material, said closure surfaces are moved away.
  • the invention relates to the field of watchmaking, and more particularly the field of guides and bearings.
  • the invention more particularly relates to a sliding bearing 1 overmoulded clock.
  • this sliding bearing 1 comprises a core 5 of plastic material injected into a cavity 4 of revolution that comprises an outer cage 3. And this core 5 is movable with a residual functional game and permanent with respect to the outer cage 3 , and indisputedmontable with respect to this outer cage 3.
  • the cavity 4 is open.
  • This first embodiment is visible on the figure 1 .
  • the plastic material has a slight shrinkage, which is sufficient to ensure the functional play JP bearing, necessary for the smooth operation of the plain bearing.
  • the core 5 has a homothetic geometry to that of the cavity 4, the removal of the plastic being regular, the geometry of the core 5 is as good as that of the cavity 4. It is therefore necessary, for optimal operation, to ensure the very good circularity of this cavity 4, the respect of the However, the dimension is not important since the adjustment is by the injection or casting process, preferably injection.
  • This withdrawal can be used to obtain a radial clearance JR and / or an axial play JA, whose value is thus controlled.
  • the plain bearing 1 further comprises an inner cage 2 contained in the cavity 4. And the plastic core 5 is then injected between the inner cage 2 and the outer cage 3. The core is then mobile with a residual functional game and permanent with respect to the inner cage 2, and indisputedmontable with respect to this inner cage 2.
  • the core 5 is delimited by an outer surface of revolution 20 that comprises the inner cage 2 and by an inner surface of revolution 30 that includes the outer cage 3.
  • this outer surface of revolution 20 and this inner surface of revolution 30 are coaxial about the same axis of revolution D.
  • the core 5 is entirely of revolution, as regards its contact surfaces with the outer cage 3, and with the inner cage 2 when it exists.
  • the outer surface of revolution 20 and / or said inner surface of revolution 30 comprises at least one groove 6 or a shoulder 7 of revolution for the immobilization of the core 5 in the direction of an axis of revolution D common to the outer surface of revolution 20 and to the inner surface of revolution 30.
  • both the outer surface of revolution 20 and the inner surface of revolution 30 each comprise at least one such groove 6 or such a shoulder 7 of revolution for the immobilization of the core (5) in the direction of the axis of revolution D, as visible in the figures.
  • the outer surface of revolution 20 and the inner surface of revolution 30 comprise, at least one groove, and the other at least one shoulder, or conversely, this at least one groove and the at least one shoulder being of revolution and for the immobilization of the core 5 in the direction of the axis of revolution D.
  • the plastic material constituting the core 5 has a shrinkage coefficient of between 2.0% and 3.0% which determines the first functional clearance J1 of the plain bearing 1 between the inner cage 2 and the core 5 on the one hand , and the second functional clearance J2 between the outer cage 3 and the core 5 on the other hand.
  • the functional bearing game JP is then equal to the sum of the first functional game J1 and the second functional game J2.
  • the resulting axial clearance JA which is the sum of the upper axial clearance JAS and the lower axial clearance JAI, is about twice the radial clearance JR.
  • the Figures 3 and 4 illustrate the shrinkage R after complete polymerization of the plastic material.
  • the axial and radial play of the bearing 1 is defined by the shrinkage rate and the geometry of the bearing.
  • a 2.5% shrinkage of the walls of 0.4mm corresponds to a frost of 0.010 mm which is perfectly suited to the usual watch applications. This frolic comes from the process itself, and is guaranteed from one room to another.
  • Each functional set, first functional clearance J1 between the inner cage 2 and the core 5 on the one hand, and the second functional clearance J2 between the outer cage 3 and the core 5, on the other hand, if necessary, is between 0.004 mm and 0.012 mm.
  • each radial functional clearance, the first radial functional clearance JR1 between the inner race 2 and the core 5 on the one hand, and the second radial functional clearance JR2 between the outer race 3 and the core 5, on the other hand, if there is takes place is between 0.004 mm and 0.012 mm.
  • each such functional clearance, J1, J2 is between 0.006 mm and 0.010 mm.
  • each such radial functional clearance, JR1, JR2, is between 0.006 mm and 0.010 mm.
  • the sliding bearing 1 consists exclusively of the inner cage 2, the core 5, and the outer cage 3.
  • the invention also relates to a clockwork movement comprising at least one such smooth bearing 1.
  • the invention also relates to a timepiece 100 comprising at least one such smooth bearing1 and / or such a movement 10.
  • an injection or casting chamber 40 is defined by the addition of closure surfaces 11, 12 related to the cavity 4, thus forming a mold, as visible in FIG. figure 6 . And then the injection or casting of plastic is carried out in the chamber 40 to produce a core 5 delimited by the cavity 4 and these closing surfaces 11, 12. After complete removal of the plastic material, these closing surfaces are removed. .
  • a three-component smooth bearing 1 before making the injection or casting, is inserted into the cavity 4 of revolution, and coaxially with the outer cage 3 according to the invention.
  • axis of revolution D an inner race 2 which is intended to be incorporated in the sliding bearing 1.
  • the injection or casting chamber 40 is delimited by an outer surface of revolution 20 that the inner race 2 comprises and by an inner surface of revolution 30 that includes the outer cage 3.
  • the injection or casting chamber 40 is delimited by an outer surface of revolution 20 that comprises the inner cage 2 and by an inner surface of revolution 30 which the outer cage 3, and by the addition of closure surfaces associated with the cavity 4 and the inner cage 2 respectively bordering the inner surface of revolution 30 and the outer surface of revolution 20. And, after complete removal of the plastic material, the closing surfaces are moved away.
  • the invention still relates to any type of overmoulded plain bearing 1 comprising an outer cage 3 with a cavity 4 of revolution about an axis of revolution D, in which cavity 4 are positioned a plurality of inner cages 2 having revolution contact around the axis of revolution D.
  • These revolution contact surfaces are coaxial with each other and with the cavity 4, and the inner cages 2 are threaded into one another.
  • the inner cages 2 are separated, from the cavity 4 for the outermost of them, and two by two for the others, each time by a core 5 made of plastic material injected into a chamber delimited by the internal volume of the cage the outermost, and by the outer volume of the innermost cage.
  • the chambers, in which the plastic is injected to form the cores are further delimited by closure surfaces, for example substantially perpendicular to the axis D.
  • the figure 8 illustrates an example of such a bearing 1 having an outer cage 3, separated from an inner inner cage 2A by a first core 5A.
  • the intermediate cage 2A is separated from an axial inner cage 2B by a second core 5B.
  • the withdrawal R of the core 5A, 5B ensures the elementary functional play JE between the cages separated by the core concerned.
  • the figure 9 shows different relative positions between the outer cage 3, the inner cage 2 and the core 5 of a bearing 1 according to the invention.
  • the profile is here arbitrary, for example rounded, but preferably the core 5 has walls respectively parallel and perpendicular to the main axis D.
  • the sliding bearing can be handled in one piece without loss of components.
  • This bearing has no problem of impact resistance, because of the manufacture of the plastic core.
  • the adjustment of the game is intrinsic since it comes from the withdrawal of the plastic material during its final polymerization.
  • Tightening tolerances of tight fitting depend on narrow manufacturing tolerances, so it is possible to substantially reduce the functional clearance. Indeed, it is not required particular precision, in diameter or in the axial direction, of the outer cage, and, as the case of the inner cage, since the plastic material occupies all the available volume during its injection or its casting. The injection or the casting thus compensates for all the tolerances, and the frolics remain perfectly correct.
  • the partition that is to say the height of the outer cage relative to the inner cage, is perfectly controlled and centered.
  • the control and centering are given by the symmetrical shrinkage of the plastic, and, when executed with a mold and closing surfaces, by the bearing surface in the mold to align the two cages.
  • the preferred embodiment by injection ensures good control of the process and its perfect reproducibility.
  • the injection allows the creation of the core, the adjustment of the frost during the withdrawal, and the assembly of the bearing, which is unmountable after injection, when one of the cages, inside or outside, has a groove or a shoulder limiting the movement in the axial direction.
  • plastics have tribological qualities well suited to this application. More particularly, the use of the POM is satisfactory.
  • the plastic material used may be composite, and incorporate slip improving compounds such as lubricant, PTFE, "Delrin®”, “Rilsan®”, “Nylon®”, or the like.
  • the plastic is chosen with a coefficient of friction of between 0.07 and 0.15. The use of materials with lower coefficients of friction is also possible, despite their higher cost.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Rolling Contact Bearings (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

The bearing (1) has a core (5) made of a plastic material injected into a cavity (4) of revolution comprised in an outer cage (3). The core is moved with a permanent and residual operating clearance with respect to the outer cage, and is immobilized from the outer cage. An inner cage (2) is contained within the cavity. The plastic core is arranged between the inner cage and the outer cage. The core is delimited by an outer surface of revolution of the inner cage and an inner surface of revolution of the outer cage. An independent claim is also included for a method for manufacturing a smooth timepiece bearing.

Description

Domaine de l'inventionField of the invention

L'invention concerne un palier lisse d'horlogerie surmoulé.The invention relates to a molded overmolded clock bearing.

L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel palier lisse.The invention also relates to a watch movement comprising at least one such smooth bearing.

L'invention concerne encore une pièce d'horlogerie comportant au moins un tel palier lisse.The invention also relates to a timepiece comprising at least one such smooth bearing.

L'invention concerne encore un procédé de fabrication d'un palier lisse d'horlogerie surmoulé.The invention also relates to a method for manufacturing a molded overmolded sliding bearing.

L'invention concerne le domaine de l'horlogerie, et plus particulièrement le domaine des guidages et des paliers.The invention relates to the field of watchmaking, and more particularly the field of guides and bearings.

Arrière-plan de l'inventionBackground of the invention

On connaît essentiellement deux types de paliers horlogers :

  • les roulements à billes comportent un grand nombre de composants, et il est nécessaire de régler leur ébat lors du montage ;
  • les paliers lisses sont de réalisation coûteuse en raison de la précision recherchée, leur tenue aux chocs est médiocre quand ils comportent une pierre, le réglage de l'ébat est également nécessaire.
Two types of watch bearings are essentially known:
  • the ball bearings have a large number of components, and it is necessary to adjust their frolics during assembly;
  • the plain bearings are expensive because of the desired accuracy, their impact resistance is poor when they include a stone, the setting of the frolicking is also necessary.

Dans un cas comme dans l'autre, les composants associés à ces paliers doivent être réalisés avec un niveau de précision élevé.In either case, the components associated with these bearings must be made with a high level of precision.

La lubrification des paliers est un domaine difficile qui nécessite du soin, et une maintenance en service.Bearing lubrication is a difficult area that requires care, and maintenance in service.

Le document CH 559 383 B5 au nom de PORTESCAP illustre un palier amortisseur de chocs pour montre, avec un noyau qui est une partie élastique, sans jeu entre les différentes cages concentriques que comporte ce palier.The document CH 559 383 B5 on behalf of PORTESCAP illustrates a shock-absorbing bearing for a watch, with a core which is an elastic part, without play between the different concentric cages that this bearing comprises.

Le document FR 1 579 777 A au nom de FRATELLI BORLETTI décrit un pivot de balancier d'horlogerie avec un disque en matière plastique servant de contre-pierre d'appui de l'extrémité arrondie d'un balancier. Ce disque est logé dans une cavité d'un siège portant une pierre annulaire. Ce disque contre-pierre peut être moulé par injection.The document FR 1 579 777 A in the name of FRATELLI BORLETTI describes a pendulum clock pivot with a plastic disk serving as counter-stone support of the rounded end of a pendulum. This disc is housed in a cavity of a seat bearing an annular stone. This counter-stone disc can be injection molded.

Le document FR 1 587 976 A au nom de KURUCZ ET MATTHEY décrit un palier amortisseur de chocs d'horlogerie avec un palier massif en matière plastique logé dans une creusure centrale, de façon analogue à CH 559 383 B5 cité plus haut. Lors du retrait de la matière plastique, la matière se resserre autour d'une nervure et assure l'assemblage sans jeu du corps de palier dans son support.The document FR 1 587 976 A in the name of KURUCZ AND MATTHEY discloses a watch shock absorber bearing with a solid plastic bearing housed in a central recess, similarly to CH 559 383 B5 cited above. During the removal of the plastic material, the material is tightened around a rib and assures the assembly without play of the bearing body in its support.

Le document US 2 956 394 A au nom de DUBOIS (TISSOT) , présente un palier surmoulé pour montre. Comme dans le document FR 1 587 976 A ci-dessus, la forme de coin conique fixe fortement l'élément moulé lors du refroidissement.The document US 2,956,394 A in the name of DUBOIS (TISSOT) , has an overmoulded bearing for a watch. As in the document FR 1 587 976 A above, the conical wedge shape strongly fixes the molded element during cooling.

Le document CH 583 934 B5, PORTESCAP décrit un palier pour pivot de mobile d'horlogerie, proche du document FR 1 587 976 A ci-dessus, avec une forme de fond modifiée.The document CH 583 934 B5, PORTESCAP describes a bearing for clockwork mobile pivot, close to the document FR 1 587 976 A above, with a modified background shape.

Résumé de l'inventionSummary of the invention

L'invention se propose de contourner ces problèmes de l'art antérieur, en proposant des paliers moins coûteux, à nombre de composants réduit, peu sensibles aux chocs, et ne nécessitant pas de réglage particulier lors de leur montage.The invention proposes to circumvent these problems of the prior art, by proposing cheaper bearings, with a reduced number of components, little sensitive to shocks, and not requiring any particular adjustment during their assembly.

A cet effet, l'invention concerne un palier lisse d'horlogerie surmoulé, caractérisé en ce qu'il comporte un noyau en matière plastique injecté dans une cavité de révolution que comporte une cage extérieure, et en ce que ledit noyau est mobile avec un jeu fonctionnel résiduel et permanent par rapport à ladite cage extérieure, et indémontable par rapport à ladite cage extérieure.For this purpose, the invention relates to a overmolded overmolded clock bearing, characterized in that it comprises a plastic core injected into a cavity of revolution that includes an outer cage, and in that said core is movable with a residual functional game and permanent relative to said outer cage, and indémontable relative to said outer cage.

Selon une caractéristique de l'invention, ledit palier lisse comporte encore au moins une cage intérieure contenue dans ladite cavité, et ledit noyau en matière plastique est injecté entre ladite cage intérieure et ladite cage extérieure et ledit noyau est mobile avec un jeu fonctionnel résiduel et permanent par rapport à ladite cage intérieure, et indémontable par rapport à ladite cage intérieure.According to a feature of the invention, said sliding bearing further comprises at least one inner cage contained in said cavity, and said plastic core is injected between said inner race and said outer race and said core is movable with a residual and permanent functional clearance with respect to said inner cage, and indémontable with respect to said inner cage.

Selon une caractéristique de l'invention, ledit noyau est délimité par une surface extérieure de révolution que comporte ladite cage intérieure et par une surface intérieure de révolution que comporte ladite cage extérieure.According to a feature of the invention, said core is delimited by an outer surface of revolution that includes said inner cage and an inner surface of revolution that includes said outer cage.

Selon une caractéristique de l'invention, ladite surface extérieure de révolution et ladite surface intérieure de révolution sont coaxiales autour d'un même axe de révolution.According to one characteristic of the invention, said outer surface of revolution and said inner surface of revolution are coaxial around a same axis of revolution.

Selon une caractéristique de l'invention, ladite surface extérieure de révolution ou/et ladite surface intérieure de révolution comporte au moins une gorge ou un épaulement de révolution pour l'immobilisation dudit noyau dans la direction d'un axe de révolution commun à ladite surface extérieure de révolution et à ladite surface intérieure de révolution.According to one characteristic of the invention, said outer surface of revolution and / or said inner surface of revolution comprises at least one groove or a shoulder of revolution for the immobilization of said core in the direction of an axis of revolution common to said surface. exterior of revolution and said inner surface of revolution.

Selon une caractéristique de l'invention, la matière plastique constitutive dudit noyau a un coefficient de retrait compris entre 2,0% et 3,0% qui détermine le jeu fonctionnel dudit palier lisse entre ladite cage intérieure et ledit noyau d'une part, et entre ladite cage extérieure et ledit noyau d'autre part.According to one characteristic of the invention, the constituent plastic material of said core has a shrinkage coefficient of between 2.0% and 3.0% which determines the functional clearance of said plain bearing between said inner race and said core on the one hand, and between said outer cage and said core on the other hand.

Selon une caractéristique de l'invention, ledit palier lisse est constitué exclusivement de ladite cage intérieure, dudit noyau, et de ladite cage extérieure.According to one characteristic of the invention, said sliding bearing consists exclusively of said inner race, said core, and said outer race.

Selon une caractéristique de l'invention, dans ladite cavité sont positionnées une pluralité de cages intérieures comportant des surfaces de contact de révolution coaxiales entre elles et avec ladite cavité autour d'un même axe de révolution, lesdites cages intérieures étant enfilées l'une dans l'autre et séparées, de ladite cavité pour la plus externe d'entre elles, et deux à deux pour les autres, à chaque fois par un noyau en matière plastique injecté dans une chambre délimitée par le volume intérieur de la cage la plus externe, et par le volume extérieur de la cage la plus interne.According to a characteristic of the invention, in said cavity are positioned a plurality of inner cages having contact surfaces of revolution coaxial with each other and with said cavity around a same axis of revolution, said inner cages being threaded one in the other and separated, said cavity for the outermost of them, and two by two for the others, each time by a plastic core injected into a chamber delimited by the internal volume of the outermost cage , and by the outer volume of the innermost cage.

L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel palier lisse.The invention also relates to a watch movement comprising at least one such smooth bearing.

L'invention concerne encore une pièce d'horlogerie comportant au moins un tel palier lisse.The invention also relates to a timepiece comprising at least one such smooth bearing.

L'invention concerne encore un procédé de fabrication d'un palier lisse d'horlogerie surmoulé, caractérisé en ce que l'on effectue les étapes suivantes :

  • on prépare une cage extérieure qui est destinée à être incorporée audit palier lisse et qui comporte une cavité de révolution autour d'un axe de révolution;
  • on utilise ladite cavité comme chambre d'injection ou de coulée;
  • on effectue une injection ou une coulée de matière plastique dans ladite chambre pour réaliser un noyau délimité par ladite cavité;
  • on assure les conditions d'un retrait thermique ou cristallin de ladite matière plastique pour limiter ledit retrait à une fourchette de 2,0% à 3,0% ;
  • on attend le retrait complet de ladite matière plastique avant d'utiliser ledit palier lisse.
The invention also relates to a method for manufacturing a molded overmolded watch bearing, characterized in that the following steps are carried out:
  • an outer cage is prepared which is intended to be incorporated in said smooth bearing and which comprises a cavity of revolution about an axis of revolution;
  • said cavity is used as an injection or casting chamber;
  • injection or casting of plastic material in said chamber to achieve a core defined by said cavity;
  • providing conditions for thermal or crystalline shrinkage of said plastic material to limit said shrinkage to a range of 2.0% to 3.0%;
  • the complete removal of said plastic material is expected before using said plain bearing.

Selon une caractéristique de l'invention, avant d'effectuer ladite injection ou ladite coulée :

  • on délimite, autour de ladite cavité de révolution, une chambre d'injection ou de coulée, par l'adjonction de surfaces de fermeture connexes à ladite cavité,
    et
  • on effectue ladite injection ou coulée de matière plastique dans ladite chambre pour réaliser un noyau délimité par ladite cavité et lesdites surfaces de fermeture;
  • après retrait complet de ladite matière plastique, on éloigne lesdites surfaces de fermeture.
According to a characteristic of the invention, before carrying out said injection or said casting:
  • there is defined, around said cavity of revolution, an injection or casting chamber, by the addition of closure surfaces connected to said cavity,
    and
  • said injection or casting of plastics material into said chamber to provide a core defined by said cavity and said closure surfaces;
  • after complete removal of said plastic material, said closure surfaces are moved away.

Selon une caractéristique de l'invention, avant d'effectuer ladite injection ou ladite coulée,

  • on insère dans ladite cavité de révolution, et coaxialement à ladite cage extérieure selon ledit axe de révolution, une cage intérieure qui est destinée à être incorporée audit palier lisse ;
  • on délimite ladite chambre d'injection ou de coulée par une surface extérieure de révolution que comporte ladite cage intérieure et par une surface intérieure de révolution que comporte ladite cage extérieure.
According to a characteristic of the invention, before carrying out said injection or casting,
  • inserting into said revolution cavity, and coaxially to said outer cage along said axis of revolution, an inner cage which is intended to be incorporated in said sliding bearing;
  • said injection or casting chamber is defined by an outer surface of revolution that comprises said inner cage and by an inner surface of revolution that includes said outer cage.

Selon une caractéristique de l'invention, avant d'effectuer ladite injection ou ladite coulée, on délimite ladite chambre d'injection ou de coulée par une surface extérieure de révolution que comporte ladite cage intérieure et par une surface intérieure de révolution que comporte ladite cage extérieure, et par l'adjonction de surfaces de fermeture connexes à ladite cavité et à ladite cage intérieure en bordure respectivement de ladite une surface intérieure de révolution et de ladite surface extérieure de révolution;
et, après retrait complet de ladite matière plastique, on éloigne lesdites surfaces de fermeture.According to a characteristic of the invention, before carrying out said injection or said casting, said injection or casting chamber is defined by an outer surface of revolution that comprises said inner cage and by an inner surface of revolution that comprises said cage external, and by the addition of closure surfaces associated with said cavity and said inner cage respectively bordering said inner surface of revolution and said outer surface of revolution;
and after complete removal of said plastic material, said closure surfaces are moved away.

Description sommaire des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, en référence aux dessins annexés où :

  • la figure 1 représente, de façon schématisée et en coupe dans un plan passant par un axe de révolution, un palier lisse selon l'invention, dans un premier mode d'exécution avec un noyau plastique moulé dans une cage extérieure, lors de l'injection ou de la coulée de la matière plastique constituant ce noyau;
  • la figure 2 représente, de façon similaire à la figure 1, un deuxième mode de réalisation de l'invention, avec un noyau plastique moulé entre une cage intérieure et une cage extérieure lors de l'injection ou de la coulée de la matière plastique constituant ce noyau;
  • la figure 3 représente, de façon similaire à la figure 2, un deuxième mode de réalisation de l'invention, après retrait de la matière plastique constituant ce noyau plastique ;
  • la figure 4 représente, de façon similaire à la figure 3, un deuxième mode de réalisation de l'invention, après retrait de la matière plastique constituant ce noyau plastique, et dans une autre variante de réalisation;
  • la figure 5 représente, de façon schématisée, une vue de dessus et une coupe similaire aux figures précédentes, d'un palier lisse selon l'invention réalisé sans moule ;
  • la figure 6 représente, de façon schématisée, une vue de dessus et deux coupes similaires aux figures 1 à 4, d'un palier lisse selon l'invention réalisé avec un moule comportant des canaux d'injection ou de coulée visibles sur la vue de dessus et l'une des deux coupes :
  • la figure 7 représente, sous forme d'un schéma-blocs, une pièce d'horlogerie comportant un mouvement comportant un palier lisse selon l'invention ;
  • la figure 8 représente, de façon schématisée, un palier comportant plusieurs noyaux intermédiaires selon le principe de l'invention ;
  • la figure 9 représente, de façon schématisée, un palier selon l'invention, dans plusieurs positions relatives de ses cage intérieure et extérieure et de son noyau.
Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings in which:
  • the figure 1 represents, schematically and in section in a plane passing through an axis of revolution, a sliding bearing according to the invention, in a first embodiment with a plastic core molded in an outer cage, during the injection or the casting of the plastic material constituting this core;
  • the figure 2 represents, similarly to the figure 1 , a second embodiment of the invention, with a plastic core molded between an inner cage and an outer cage during the injection or casting of the plastic material constituting this core;
  • the figure 3 represents, similarly to the figure 2 , a second embodiment of the invention, after removal of the plastic material constituting this plastic core;
  • the figure 4 represents, similarly to the figure 3 , a second embodiment of the invention, after removal of the plastic material constituting this plastic core, and in another embodiment;
  • the figure 5 shows, schematically, a top view and a section similar to the previous figures, of a sliding bearing according to the invention made without mold;
  • the figure 6 schematically represents a view from above and two sections similar to Figures 1 to 4 , a sliding bearing according to the invention made with a mold having injection or casting channels visible in the top view and one of two sections:
  • the figure 7 represents, in the form of a block diagram, a timepiece comprising a movement comprising a sliding bearing according to the invention;
  • the figure 8 represents, schematically, a bearing comprising a plurality of intermediate cores according to the principle of the invention;
  • the figure 9 schematically represents a bearing according to the invention, in several relative positions of its inner and outer cage and its core.

Description détaillée des modes de réalisation préférésDetailed Description of the Preferred Embodiments

L'invention concerne le domaine de l'horlogerie, et plus particulièrement le domaine des guidages et des paliers.The invention relates to the field of watchmaking, and more particularly the field of guides and bearings.

L'invention concerne plus particulièrement un palier lisse 1 d'horlogerie surmoulé.The invention more particularly relates to a sliding bearing 1 overmoulded clock.

Selon l'invention, ce palier lisse 1 comporte un noyau 5 en matière plastique injecté dans une cavité 4 de révolution que comporte une cage extérieure 3. Et ce noyau 5 est mobile avec un jeu fonctionnel résiduel et permanent par rapport à la cage extérieure 3, et indémontable par rapport à cette cage extérieure 3.According to the invention, this sliding bearing 1 comprises a core 5 of plastic material injected into a cavity 4 of revolution that comprises an outer cage 3. And this core 5 is movable with a residual functional game and permanent with respect to the outer cage 3 , and indémontable with respect to this outer cage 3.

De façon préférée, la cavité 4 est débouchante.Preferably, the cavity 4 is open.

Ce premier mode de réalisation est visible sur la figure 1. Après polymérisation complète, la matière plastique a un léger retrait, qui est suffisant pour assurer le jeu fonctionnel JP de palier, nécessaire au bon fonctionnement du palier lisse. Comme le noyau 5 a une géométrie homothétique à celle de la cavité 4, le retrait de la matière plastique étant régulier, la géométrie du noyau 5 est aussi bonne que celle de la cavité 4. Il convient donc, pour un fonctionnement optimal, de s'assurer de la très bonne circularité de cette cavité 4, le respect de la cote étant en revanche peu important puisque l'ajustement se fait par le procédé d'injection ou de coulée, préférentiellement d'injection.This first embodiment is visible on the figure 1 . After complete polymerization, the plastic material has a slight shrinkage, which is sufficient to ensure the functional play JP bearing, necessary for the smooth operation of the plain bearing. As the core 5 has a homothetic geometry to that of the cavity 4, the removal of the plastic being regular, the geometry of the core 5 is as good as that of the cavity 4. It is therefore necessary, for optimal operation, to ensure the very good circularity of this cavity 4, the respect of the However, the dimension is not important since the adjustment is by the injection or casting process, preferably injection.

Ce retrait peut être utilisé pour l'obtention d'un jeu radial JR ou/et d'un jeu axial JA, dont la valeur est ainsi contrôlée.This withdrawal can be used to obtain a radial clearance JR and / or an axial play JA, whose value is thus controlled.

Selon une exécution préférée visible sur les figures 2 à 6, dans un deuxième mode de réalisation, le palier lisse 1 comporte encore une cage intérieure 2 contenue dans la cavité 4. Et le noyau 5 en matière plastique est alors injecté entre la cage intérieure 2 et la cage extérieure 3. Le noyau est alors mobile avec un jeu fonctionnel résiduel et permanent par rapport à la cage intérieure 2, et indémontable par rapport à cette cage intérieure 2.According to a preferred embodiment visible on the Figures 2 to 6 in a second embodiment, the plain bearing 1 further comprises an inner cage 2 contained in the cavity 4. And the plastic core 5 is then injected between the inner cage 2 and the outer cage 3. The core is then mobile with a residual functional game and permanent with respect to the inner cage 2, and indémontable with respect to this inner cage 2.

De façon préférée, le noyau 5 est délimité par une surface extérieure de révolution 20 que comporte la cage intérieure 2 et par une surface intérieure de révolution 30 que comporte la cage extérieure 3.Preferably, the core 5 is delimited by an outer surface of revolution 20 that comprises the inner cage 2 and by an inner surface of revolution 30 that includes the outer cage 3.

De préférence, cette surface extérieure de révolution 20 et cette surface intérieure de révolution 30 sont coaxiales autour d'un même axe de révolution D.Preferably, this outer surface of revolution 20 and this inner surface of revolution 30 are coaxial about the same axis of revolution D.

Ainsi, dans une réalisation préférée, le noyau 5 est entièrement de révolution, en ce qui concerne ses surfaces de contact avec la cage extérieure 3, et avec la cage intérieure 2 quand elle existe.Thus, in a preferred embodiment, the core 5 is entirely of revolution, as regards its contact surfaces with the outer cage 3, and with the inner cage 2 when it exists.

De façon préférée et particulièrement avantageuse, la surface extérieure de révolution 20 ou/et ladite surface intérieure de révolution 30 comporte au moins une gorge 6 ou un épaulement 7 de révolution pour l'immobilisation du noyau 5 dans la direction d'un axe de révolution D commun à la surface extérieure de révolution 20 et à la surface intérieure de révolution 30.In a preferred and particularly advantageous manner, the outer surface of revolution 20 and / or said inner surface of revolution 30 comprises at least one groove 6 or a shoulder 7 of revolution for the immobilization of the core 5 in the direction of an axis of revolution D common to the outer surface of revolution 20 and to the inner surface of revolution 30.

Et, si possible, à la fois la surface extérieure de révolution 20 et la surface intérieure de révolution 30 comportent chacune au moins une telle gorge 6 ou un tel épaulement 7 de révolution pour l'immobilisation du noyau (5) dans la direction de l'axe de révolution D, tel que visible sur les figures.And, if possible, both the outer surface of revolution 20 and the inner surface of revolution 30 each comprise at least one such groove 6 or such a shoulder 7 of revolution for the immobilization of the core (5) in the direction of the axis of revolution D, as visible in the figures.

Dans une réalisation particulière visible à la figure 4, la surface extérieure de révolution 20 et la surface intérieure de révolution 30 comportent, l'une au moins une gorge, et l'autre au moins un épaulement, ou inversement, cette au moins une gorge et cet au moins un épaulement étant de révolution et pour l'immobilisation du noyau 5 dans la direction de l'axe de révolution D.In a particular embodiment visible to the figure 4 , the outer surface of revolution 20 and the inner surface of revolution 30 comprise, at least one groove, and the other at least one shoulder, or conversely, this at least one groove and the at least one shoulder being of revolution and for the immobilization of the core 5 in the direction of the axis of revolution D.

Le choix de la matière plastique est important. De préférence, la matière plastique constitutive du noyau 5 a un coefficient de retrait compris entre 2,0% et 3,0% qui détermine le premier jeu fonctionnel J1 du palier lisse 1 entre la cage intérieure 2 et le noyau 5 d'une part, et le deuxième jeu fonctionnel J2 entre la cage extérieure 3 et le noyau 5 d'autre part. Le jeu fonctionnel de palier JP est alors égal à la somme du premier jeu fonctionnel J1 et du deuxième jeu fonctionnel J2.The choice of plastic is important. Preferably, the plastic material constituting the core 5 has a shrinkage coefficient of between 2.0% and 3.0% which determines the first functional clearance J1 of the plain bearing 1 between the inner cage 2 and the core 5 on the one hand , and the second functional clearance J2 between the outer cage 3 and the core 5 on the other hand. The functional bearing game JP is then equal to the sum of the first functional game J1 and the second functional game J2.

Pour une exécution selon la figure 3, où les retraits R sont équivalents axialement et radialement, le jeu axial résultant JA, qui est la somme du jeu axial supérieur JAS et du jeu axial inférieur JAI, est environ le double du jeu radial JR.For execution according to figure 3 where the recesses R are equivalent axially and radially, the resulting axial clearance JA, which is the sum of the upper axial clearance JAS and the lower axial clearance JAI, is about twice the radial clearance JR.

Ce retrait thermique ou cristallin, selon la matière utilisée, conditionne ainsi le jeu de palier.This thermal or crystalline shrinkage, depending on the material used, thus conditions the bearing clearance.

Les figures 3 et 4 illustrent le retrait R après polymérisation complète de la matière plastique. Le jeu axial et radial du palier 1 est défini par le taux de retrait et par la géométrie du palier. Par exemple, dans le cas de la figure 3, un retrait de 2,5% des parois de 0,4mm, correspond à un ébat de 0,010 mm qui convient parfaitement aux applications horlogères usuelles. Cet ébat vient du process lui-même, et est ainsi garanti d'une pièce à l'autre.The Figures 3 and 4 illustrate the shrinkage R after complete polymerization of the plastic material. The axial and radial play of the bearing 1 is defined by the shrinkage rate and the geometry of the bearing. For example, in the case of figure 3 , a 2.5% shrinkage of the walls of 0.4mm, corresponds to a frost of 0.010 mm which is perfectly suited to the usual watch applications. This frolic comes from the process itself, and is guaranteed from one room to another.

Chaque jeu fonctionnel, premier jeu fonctionnel J1 entre la cage intérieure 2 et le noyau 5 d'une part, et deuxième jeu fonctionnel J2 entre la cage extérieure 3 et le noyau 5 d'autre part s'il y a lieu, est compris entre 0,004 mm et 0,012 mm.Each functional set, first functional clearance J1 between the inner cage 2 and the core 5 on the one hand, and the second functional clearance J2 between the outer cage 3 and the core 5, on the other hand, if necessary, is between 0.004 mm and 0.012 mm.

De préférence, chaque jeu fonctionnel radial, premier jeu fonctionnel radial JR1 entre la cage intérieure 2 et le noyau 5 d'une part, et deuxième jeu fonctionnel radial JR2 entre la cage extérieure 3 et le noyau 5 d'autre part s'il y a lieu, est compris entre 0,004 mm et 0,012 mm.Preferably, each radial functional clearance, the first radial functional clearance JR1 between the inner race 2 and the core 5 on the one hand, and the second radial functional clearance JR2 between the outer race 3 and the core 5, on the other hand, if there is takes place, is between 0.004 mm and 0.012 mm.

De préférence, chaque tel jeu fonctionnel, J1, J2, est compris entre 0,006 mm et 0,010 mm.Preferably, each such functional clearance, J1, J2, is between 0.006 mm and 0.010 mm.

De préférence, chaque tel jeu fonctionnel radial, JR1, JR2, est compris entre 0,006 mm et 0,010 mm.Preferably, each such radial functional clearance, JR1, JR2, is between 0.006 mm and 0.010 mm.

Dans une application préférée, le palier lisse 1 selon l'invention est constitué exclusivement de la cage intérieure 2, du noyau 5, et de la cage extérieure 3.In a preferred application, the sliding bearing 1 according to the invention consists exclusively of the inner cage 2, the core 5, and the outer cage 3.

L'invention concerne encore un mouvement d'horlogerie10 comportant au moins un tel palier lisse 1.The invention also relates to a clockwork movement comprising at least one such smooth bearing 1.

L'invention concerne encore une pièce d'horlogerie 100 comportant au moins un tel palier lisse1 ou/et un tel mouvement 10.The invention also relates to a timepiece 100 comprising at least one such smooth bearing1 and / or such a movement 10.

L'invention concerne encore un procédé de fabrication d'un palier lisse 1 d'horlogerie surmoulé, caractérisé en ce que l'on effectue les étapes suivantes :

  • on prépare une cage extérieure 3 qui est destinée à être incorporée au palier lisse 1 et qui comporte une cavité 4 de révolution autour d'un axe de révolution D ;
  • on utilise la cavité 4 comme chambre d'injection ou de coulée 40;
  • on effectue une injection ou une coulée de matière plastique dans la chambre 40 pour réaliser un noyau 5 délimité par cette cavité 4 ;
  • on assure les conditions d'un retrait thermique ou cristallin de cette matière plastique pour limiter le retrait à une fourchette de 2,0% à 3,0% ;
  • on attend le retrait complet de la matière plastique avant d'utiliser le palier lisse 1.
The invention also relates to a process for manufacturing a molded overmolded overlay bearing 1, characterized in that the following steps are carried out:
  • an outer cage 3 is prepared which is intended to be incorporated in the plain bearing 1 and which has a cavity 4 of revolution about an axis of revolution D;
  • the cavity 4 is used as an injection or pouring chamber 40;
  • an injection or a casting of plastic is carried out in the chamber 40 to produce a core 5 delimited by this cavity 4;
  • the conditions of a thermal or crystalline shrinkage of this plastic material are ensured to limit the shrinkage to a range of 2.0% to 3.0%;
  • the complete removal of the plastic is expected before using the plain bearing 1.

Selon une mise en oeuvre particulière, avant d'effectuer l'injection ou la coulée, on délimite, autour de la cavité 4 de révolution, une chambre d'injection ou de coulée 40, par l'adjonction de surfaces de fermeture 11, 12 connexes à la cavité 4, formant ainsi un moule, tel que visible à la figure 6. Et on effectue alors l'injection ou la coulée de matière plastique dans la chambre 40 pour réaliser un noyau 5 délimité par la cavité 4 et ces surfaces de fermeture 11, 12. Après retrait complet de la matière plastique, on éloigne ces surfaces de fermeture.According to one particular embodiment, before injection or casting, around the cavity 4 of revolution, an injection or casting chamber 40 is defined by the addition of closure surfaces 11, 12 related to the cavity 4, thus forming a mold, as visible in FIG. figure 6 . And then the injection or casting of plastic is carried out in the chamber 40 to produce a core 5 delimited by the cavity 4 and these closing surfaces 11, 12. After complete removal of the plastic material, these closing surfaces are removed. .

Selon une mise en oeuvre particulière, pour l'obtention d'un palier lisse 1 à trois composants, avant d'effectuer l'injection ou la coulée, on insère dans la cavité 4 de révolution, et coaxialement à la cage extérieure 3 selon l'axe de révolution D, une cage intérieure 2 qui est destinée à être incorporée au palier lisse 1. On délimite la chambre d'injection ou de coulée 40 par une surface extérieure de révolution 20 que comporte la cage intérieure 2 et par une surface intérieure de révolution 30 que comporte la cage extérieure 3.According to a particular implementation, for obtaining a three-component smooth bearing 1, before making the injection or casting, is inserted into the cavity 4 of revolution, and coaxially with the outer cage 3 according to the invention. axis of revolution D, an inner race 2 which is intended to be incorporated in the sliding bearing 1. The injection or casting chamber 40 is delimited by an outer surface of revolution 20 that the inner race 2 comprises and by an inner surface of revolution 30 that includes the outer cage 3.

De façon particulière, avant d'effectuer l'injection ou la coulée, on délimite la chambre d'injection ou de coulée 40 par une surface extérieure de révolution 20 que comporte la cage intérieure 2 et par une surface intérieure de révolution 30 que comporte la cage extérieure 3, et par l'adjonction de surfaces de fermeture connexes à la cavité 4 et à la cage intérieure 2 en bordure respectivement de la surface intérieure de révolution 30 et de la surface extérieure de révolution 20. Et, après retrait complet de la matière plastique, on éloigne les surfaces de fermeture.In particular, before making the injection or casting, the injection or casting chamber 40 is delimited by an outer surface of revolution 20 that comprises the inner cage 2 and by an inner surface of revolution 30 which the outer cage 3, and by the addition of closure surfaces associated with the cavity 4 and the inner cage 2 respectively bordering the inner surface of revolution 30 and the outer surface of revolution 20. And, after complete removal of the plastic material, the closing surfaces are moved away.

Naturellement, si l'invention est décrite ici dans l'application préférée, car la plus économique, à un noyau unique, on comprend qu'elle peut très facilement être étendue à une fabrication de type gigogne de mobiles pivotant les uns dans les autres, par exemple des chaussées de minutes et d'heures et une cheminée de guidage recevant ces chaussées. L'application à un simple palier lisse n'est donc nullement restrictive, et l'invention doit être comprise comme étant applicable à tout type de guidage en pivotement axial. La limitation de course axiale par l'utilisation de gorges ou d'épaulements est très utile dans la fabrication de mobiles complexes indémontables.Naturally, if the invention is described here in the preferred application, because the most economical, to a single core, it is understood that it can very easily be extended to a trolley-like manufacturing of mobile pivoting into each other, for example pavements of minutes and hours and a guide chimney receiving these roads. The application to a simple plain bearing is therefore in no way restrictive, and the invention must be understood as being applicable to any type of guidance in axial pivoting. The limitation of axial stroke by the use of grooves or shoulders is very useful in the manufacture of indemovable complex mobiles.

Aussi, l'invention concerne encore tout type de palier lisse surmoulé 1 comportant une cage extérieure 3 avec une cavité 4 de révolution autour d'un axe de révolution D, dans laquelle cavité 4 sont positionnées une pluralité de cages intérieures 2 comportant des surfaces de contact de révolution autour de l'axe de révolution D. Ces surfaces de contact de révolution sont coaxiales entre elles et avec la cavité 4, et les cages intérieures 2 sont enfilées l'une dans l'autre. Les cages intérieures 2 sont séparées, de la cavité 4 pour la plus externe d'entre elles, et deux à deux pour les autres, à chaque fois par un noyau 5 en matière plastique injecté dans une chambre délimitée par le volume intérieur de la cage la plus externe, et par le volume extérieur de la cage la plus interne. De préférence, les chambres, dans lesquelles on effectue l'injection de la matière plastique pour constituer les noyaux, sont encore délimitées par des surfaces de fermeture, par exemple sensiblement perpendiculaires à l'axe D.Also, the invention still relates to any type of overmoulded plain bearing 1 comprising an outer cage 3 with a cavity 4 of revolution about an axis of revolution D, in which cavity 4 are positioned a plurality of inner cages 2 having revolution contact around the axis of revolution D. These revolution contact surfaces are coaxial with each other and with the cavity 4, and the inner cages 2 are threaded into one another. The inner cages 2 are separated, from the cavity 4 for the outermost of them, and two by two for the others, each time by a core 5 made of plastic material injected into a chamber delimited by the internal volume of the cage the outermost, and by the outer volume of the innermost cage. Preferably, the chambers, in which the plastic is injected to form the cores, are further delimited by closure surfaces, for example substantially perpendicular to the axis D.

La figure 8 illustre un exemple d'un tel palier 1 comportant une cage extérieure 3, séparé d'une cage intérieure intermédiaire 2A par un premier noyau 5A. La cage intermédiaire 2A est séparée d'une cage intérieure axiale 2B par un deuxième noyau 5B. A chaque fois, le retrait R du noyau 5A, 5B, assure le jeu fonctionnel élémentaire JE entre les cages séparées par le noyau concerné.The figure 8 illustrates an example of such a bearing 1 having an outer cage 3, separated from an inner inner cage 2A by a first core 5A. The intermediate cage 2A is separated from an axial inner cage 2B by a second core 5B. Each time, the withdrawal R of the core 5A, 5B, ensures the elementary functional play JE between the cages separated by the core concerned.

La figure 9 montre différentes positions relatives entre la cage extérieure 3, la cage intérieure 2 et le noyau 5 d'un palier 1 selon l'invention. Le profil est ici quelconque, par exemple arrondi, mais de préférence le noyau 5 comporte des parois respectivement parallèles et perpendiculaires à l'axe principal D.The figure 9 shows different relative positions between the outer cage 3, the inner cage 2 and the core 5 of a bearing 1 according to the invention. The profile is here arbitrary, for example rounded, but preferably the core 5 has walls respectively parallel and perpendicular to the main axis D.

Grâce à l'invention, de nombreuses caractéristiques sont améliorées par rapport aux paliers de l'art antérieur.Thanks to the invention, many features are improved over the bearings of the prior art.

Aucun montage par chassage, soudage, vissage, rivetage, ou similaire, n'est nécessaire.No mounting by driving, welding, screwing, riveting, or the like is necessary.

Dans la variante préférée où l'une des cages intérieure ou extérieure comporte l'une des gorges ou un épaulement, le palier lisse peut être manipulé d'un seul tenant sans perte de composants.In the preferred embodiment where one of the inner or outer cages has one of the grooves or a shoulder, the sliding bearing can be handled in one piece without loss of components.

Ce palier ne présente aucun problème de tenue chocs, en raison de la fabrication du noyau en matière plastique.This bearing has no problem of impact resistance, because of the manufacture of the plastic core.

Le réglage du jeu est intrinsèque, puisqu'l provient du retrait de la matière plastique lors de sa polymérisation finale.The adjustment of the game is intrinsic since it comes from the withdrawal of the plastic material during its final polymerization.

On s'affranchit des problèmes de tolérances d'ajustement serrées dépendant de tolérances de fabrication étroites, il est donc possible de diminuer sensiblement le jeu fonctionnel. En effet, il n'est pas requis de précision particulière, en diamètre ou selon la direction axiale, de la cage extérieure, et, selon le cas de la cage intérieure, puisque la matière plastique vient occuper tout le volume disponible lors de son injection ou de sa coulée. L'injection ou la coulée compense ainsi toutes les tolérances, et les ébats restent parfaitement corrects.Tightening tolerances of tight fitting depend on narrow manufacturing tolerances, so it is possible to substantially reduce the functional clearance. Indeed, it is not required particular precision, in diameter or in the axial direction, of the outer cage, and, as the case of the inner cage, since the plastic material occupies all the available volume during its injection or its casting. The injection or the casting thus compensates for all the tolerances, and the frolics remain perfectly correct.

La diminution du nombre de composants réduit le coût.Decreasing the number of components reduces the cost.

Le risque qualité est réduit également, car on évite un réglage d'ébat fastidieux.The risk of quality is reduced as well, because it avoids a fastidious frolicking.

Le partagement, c'est-à-dire la hauteur de la cage extérieure par rapport à la cage intérieure, est parfaitement maîtrisé et centré. La maîtrise et le centrage sont donnés par le retrait symétrique du plastique, et, en cas d'exécution avec un moule et des surfaces de fermeture, par la surface d'appui dans le moule pour aligner les deux cages.The partition, that is to say the height of the outer cage relative to the inner cage, is perfectly controlled and centered. The control and centering are given by the symmetrical shrinkage of the plastic, and, when executed with a mold and closing surfaces, by the bearing surface in the mold to align the two cages.

Il est possible de prévenir toute ovalisation du noyau, et donc tout décentrage, par l'emploi de plusieurs canaux d'injection ou de coulée, tel que visible sur la figure 6.It is possible to prevent any ovalisation of the core, and therefore any decentering, by the use of several injection or casting channels, as visible on the figure 6 .

Le mode de réalisation préféré par injection assure une bonne maîtrise du procédé et sa parfaite reproductibilité. L'injection permet la création du noyau, le réglage de l'ébat lors du retrait, et l'assemblage du palier, qui est indémontable après injection, quand une des cages, intérieure ou extérieure, comporte une gorge ou un épaulement limitant le mouvement selon la direction axiale.The preferred embodiment by injection ensures good control of the process and its perfect reproducibility. The injection allows the creation of the core, the adjustment of the frost during the withdrawal, and the assembly of the bearing, which is unmountable after injection, when one of the cages, inside or outside, has a groove or a shoulder limiting the movement in the axial direction.

Différentes matières plastiques présentent des qualités tribologiques convenant bien à cette application. Plus particulièrement l'emploi du POM est satisfaisant. La matière plastique utilisée peut être composite, et intégrer des composés améliorant le glissement, comme des bulles de lubrifiant, de PTFE, de « Delrin® », de « Rilsan® », de « Nylon® », ou similaire. De préférence, la matière plastique est choisie avec un coefficient de frottement compris entre 0,07 et 0,15. L'emploi de matières à coefficients de frottement plus bas est également possible, malgré leur coût plus élevé.Different plastics have tribological qualities well suited to this application. More particularly, the use of the POM is satisfactory. The plastic material used may be composite, and incorporate slip improving compounds such as lubricant, PTFE, "Delrin®", "Rilsan®", "Nylon®", or the like. Preferably, the plastic is chosen with a coefficient of friction of between 0.07 and 0.15. The use of materials with lower coefficients of friction is also possible, despite their higher cost.

Le retrait se faisant de manière symétrique, on obtient le respect des partagements de l'engrènement entre une roue palier ainsi réalisée et le mobile qui engrène avec elle.The withdrawal being done in a symmetrical manner, we obtain the respect of the sharing of the meshing between a bearing wheel thus made and the mobile that meshes with it.

Selon le choix approprié de la matière plastique utilisée pour le noyau, il est possible d'éviter toute lubrification du palier.Depending on the appropriate choice of the plastic material used for the core, it is possible to avoid any lubrication of the bearing.

Claims (20)

Palier lisse (1) d'horlogerie surmoulé, caractérisé en ce qu'il comporte un noyau (5) en matière plastique injecté dans une cavité (4) de révolution que comporte une cage extérieure (3), et en ce que ledit noyau (5) est mobile avec un jeu fonctionnel résiduel et permanent par rapport à ladite cage extérieure (3), et indémontable par rapport à ladite cage extérieure (3).Overmolded clock bearing (1), characterized in that it comprises a core (5) of plastic material injected into a cavity (4) of revolution that comprises an outer cage (3), and in that said core ( 5) is movable with a residual functional game and permanent relative to said outer cage (3), and indémontable relative to said outer cage (3). Palier lisse (1) selon la revendication 1, caractérisé en ce qu'il comporte encore au moins une cage intérieure (2) contenue dans ladite cavité (4), et en ce que ledit noyau (5) en matière plastique est injecté entre ladite cage intérieure (2) et ladite cage extérieure (3), et en ce que ledit noyau (5) est mobile avec un jeu fonctionnel résiduel et permanent par rapport à ladite cage intérieure (2), et indémontable par rapport à ladite cage intérieure (2).Bearing (1) according to claim 1, characterized in that it further comprises at least one inner race (2) contained in said cavity (4), and in that said core (5) of plastic material is injected between said inner cage (2) and said outer cage (3), and in that said core (5) is movable with a residual and permanent functional clearance with respect to said inner cage (2), and non-removable with respect to said inner cage ( 2). Palier lisse (1) selon la revendication 2, caractérisé en ce que ledit noyau (5) est délimité par une surface extérieure de révolution (20) que comporte ladite cage intérieure (2) et par une surface intérieure de révolution (30) que comporte ladite cage extérieure (3).Bearing (1) according to claim 2, characterized in that said core (5) is delimited by an outer surface of revolution (20) that comprises said inner race (2) and by an inner surface of revolution (30) that comprises said outer cage (3). Palier lisse (1) selon la revendication 3, caractérisé en ce que ladite surface extérieure de révolution (20) et ladite surface intérieure de révolution (30) sont coaxiales autour d'un même axe de révolution (D).Bearing (1) according to claim 3, characterized in that said outer surface of revolution (20) and said inner surface of revolution (30) are coaxial about a same axis of revolution (D). Palier lisse (1) selon l'une des revendications précédentes, caractérisé en ce que ledit noyau (5) est de révolution.Bearing (1) according to one of the preceding claims, characterized in that said core (5) is of revolution. Palier lisse (1) selon la revendication 3, caractérisé en ce que ladite surface extérieure de révolution (20) ou/et ladite surface intérieure de révolution (30) comporte au moins une gorge (6) ou un épaulement (7) de révolution pour l'immobilisation dudit noyau (5) dans la direction d'un axe de révolution (D) commun à ladite surface extérieure de révolution (20) et à ladite surface intérieure de révolution (30).Bearing (1) according to claim 3, characterized in that said outer surface of revolution (20) or / and said inner surface of revolution (30) comprises at least one groove (6) or a shoulder (7) of revolution for immobilizing said core (5) in the direction of an axis of revolution (D) common to said outer surface of revolution (20) and to said inner surface of revolution (30). Palier lisse (1) selon la revendication 6, caractérisé en ce que ladite surface extérieure de révolution (20) et ladite surface intérieure de révolution (30) comportent chacune au moins une gorge ou un épaulement de révolution pour l'immobilisation dudit noyau (5) dans la direction dudit axe de révolution.Bearing (1) according to claim 6, characterized in that said outer surface of revolution (20) and said inner surface of revolution (30) each comprise at least one groove or a shoulder of revolution for the immobilization of said core (5). ) in the direction of said axis of revolution. Palier lisse (1) selon la revendication 6, caractérisé en ce que ladite surface extérieure de révolution (20) et ladite surface intérieure de révolution (30) comportent, l'une au moins une gorge, et l'autre au moins un épaulement, ou inversement, ladite au moins une gorge et ledit au moins un épaulement étant de révolution et pour l'immobilisation dudit noyau (5) dans la direction dudit axe de révolution (D).Bearing (1) according to claim 6, characterized in that said outer surface of revolution (20) and said inner surface of revolution (30) comprise, at least one groove, and the other at least one shoulder, or conversely, said at least one groove and said at least one shoulder being of revolution and for the immobilization of said core (5) in the direction of said axis of revolution (D). Palier lisse (1) selon l'une des revendications précédentes, caractérisé en ce que la matière plastique constitutive dudit noyau (5) a un coefficient de retrait compris entre 2,0% et 3,0% qui détermine le jeu fonctionnel dudit palier lisse (1) entre ladite cage extérieure (3) et ledit noyau (5).Bearing (1) according to one of the preceding claims, characterized in that the constituent plastic material of said core (5) has a shrinkage coefficient of between 2.0% and 3.0% which determines the functional clearance of said plain bearing (1) between said outer cage (3) and said core (5). Palier lisse (1) selon la revendication 2, caractérisé en ce que la matière plastique constitutive dudit noyau (5) a un coefficient de retrait compris entre 2,0% et 3,0% qui détermine le jeu fonctionnel dudit palier lisse (1) entre ladite cage intérieure (2) et ledit noyau (5).Pillow block (1) according to claim 2, characterized in that the constituent plastic material of said core (5) has a shrinkage coefficient of between 2.0% and 3.0% which determines the functional clearance of said plain bearing (1) between said inner race (2) and said core (5). Palier lisse (1) selon l'une des revendications précédentes, caractérisé en ce que chaque jeu fonctionnel, entre ledit noyau (5) et une cage intérieure (2) qu'il entoure, ou entre ledit noyau (5) et une cage extérieure (3) qui l'entoure, est compris entre 0,004 mm et 0,012 mm.Pillow block (1) according to one of the preceding claims, characterized in that each functional clearance between said core (5) and an inner cage (2) which it surrounds, or between said core (5) and an outer cage (3) which surrounds it, is between 0.004 mm and 0.012 mm. Palier lisse (1) selon la revendication précédente, caractérisé en ce que chaque jeu fonctionnel radial, entre ledit noyau (5) et une cage intérieure (2) qu'il entoure, ou entre ledit noyau (5) et une cage extérieure (3) qui l'entoure, est compris entre 0,004 mm et 0,012 mm.Bearing (1) according to the preceding claim, characterized in that each radial functional clearance, between said core (5) and an inner cage (2) that surrounds, or between said core (5) and an outer cage (3) ) that surrounds it, is between 0.004 mm and 0.012 mm. Palier lisse (1) selon la revendication 2, caractérisé en ce qu'il est constitué exclusivement de ladite cage intérieure (2), dudit noyau (5), et de ladite cage extérieure (3).Bearing (1) according to claim 2, characterized in that it consists exclusively of said inner race (2), said core (5), and said outer cage (3). Palier lisse surmoulé (1) selon la revendication 2, caractérisé en ce que, dans ladite cavité (4) sont positionnées une pluralité de cages intérieures (2) comportant des surfaces de contact de révolution coaxiales entre elles et avec ladite cavité (4) autour d'un même axe de révolution (D), lesdites cages intérieures (2) étant enfilées l'une dans l'autre et séparées, de ladite cavité (4) pour la plus externe d'entre elles, et deux à deux pour les autres, à chaque fois par un noyau (5) en matière plastique injecté dans une chambre délimitée par le volume intérieur de la cage la plus externe, et par le volume extérieur de la cage la plus interne.Overmolded plain bearing (1) according to claim 2, characterized in that , in said cavity (4) are positioned a plurality of inner cages (2) having coaxial contact surfaces coaxial with each other and with said cavity (4) around a same axis of revolution (D), said inner cages (2) being threaded into one another and separated, said cavity (4) for the outermost of them, and two by two for the other, each time by a core (5) of plastic material injected into a chamber delimited by the volume inside the outermost cage, and by the outer volume of the innermost cage. Mouvement d'horlogerie (10) comportant au moins un palier lisse (1) selon l'une des revendications précédentes.Clockwork movement (10) comprising at least one plain bearing (1) according to one of the preceding claims. Pièce d'horlogerie (100) comportant au moins un palier lisse (1) selon l'une des revendications 1 à 14.Timepiece (100) comprising at least one plain bearing (1) according to one of Claims 1 to 14. Procédé de fabrication d'un palier lisse (1) d'horlogerie surmoulé, caractérisé en ce que l'on effectue les étapes suivantes : - on prépare une cage extérieure (3) qui est destinée à être incorporée audit palier lisse (1) et qui comporte une cavité (4) de révolution autour d'un axe de révolution (D) ; - on utilise ladite cavité (4) comme chambre d'injection ou de coulée (40) ; - on effectue une injection ou une coulée de matière plastique dans ladite chambre (40) pour réaliser un noyau (5) délimité par ladite cavité (4) ; - on assure les conditions d'un retrait thermique ou cristallin de ladite matière plastique pour limiter ledit retrait à une fourchette de 2,0% à 3,0% ; - on attend le retrait complet de ladite matière plastique avant d'utiliser ledit palier lisse (1). Method for manufacturing a overmolded clock bearing (1), characterized in that the following steps are carried out: an outer cage (3) is prepared which is intended to be incorporated in said smooth bearing (1) and which comprises a cavity (4) of revolution about an axis of revolution (D); said cavity (4) is used as an injection or pouring chamber (40); - Injection or casting of plastic material in said chamber (40) to achieve a core (5) defined by said cavity (4); the conditions of a thermal or crystalline shrinkage of said plastic material are provided to limit said shrinkage to a range of 2.0% to 3.0%; the complete withdrawal of said plastic material is awaited before using said plain bearing (1). Procédé de fabrication d'un palier lisse (1) selon la revendication 17, caractérisé en ce que, avant d'effectuer ladite injection ou ladite coulée : - on délimite, autour de ladite cavité (4) de révolution, une chambre d'injection ou de coulée (40), par l'adjonction de surfaces de fermeture (11 ; 12) connexes à ladite cavité (4), et en ce que : - on effectue ladite injection ou coulée de matière plastique dans ladite chambre (40) pour réaliser un noyau (5) délimité par ladite cavité (4) et lesdites surfaces de fermeture; - après retrait complet de ladite matière plastique, on éloigne lesdites surfaces de fermeture. A method of manufacturing a sliding bearing (1) according to claim 17, characterized in that before said injection or casting is carried out: - around said cavity (4) of revolution, an injection or casting chamber (40) is defined by the addition of closure surfaces (11; 12) connected to said cavity (4), and in that : said injection or casting of plastic material is carried out in said chamber (40) in order to produce a core (5) delimited by said cavity (4) and said closing surfaces; after complete removal of said plastic material, said closing surfaces are moved away. Procédé de fabrication d'un palier lisse (1) selon la revendication 17 ou 18, caractérisé en ce que, avant d'effectuer ladite injection ou ladite coulée, - on insère dans ladite cavité (4) de révolution, et coaxialement à ladite cage extérieure (3) selon ledit axe de révolution (D), une cage intérieure (2) qui est destinée à être incorporée audit palier lisse (1) ; - on délimite ladite chambre d'injection ou de coulée (40) par une surface extérieure de révolution (20) que comporte ladite cage intérieure (2) et par une surface intérieure de révolution (30) que comporte ladite cage extérieure (3). A method of manufacturing a sliding bearing (1) according to claim 17 or 18, characterized in that , prior to said injection or casting, - In said cavity (4) is rotated, and coaxially to said outer cage (3) along said axis of revolution (D), an inner cage (2) which is intended to be incorporated in said sliding bearing (1); - Is defined said injection chamber or casting (40) by an outer surface of revolution (20) that includes said inner cage (2) and an inner surface of revolution (30) that includes said outer cage (3). Procédé de fabrication d'un palier lisse (1) selon la revendication 19, caractérisé en ce que, avant d'effectuer ladite injection ou ladite coulée, on délimite ladite chambre d'injection ou de coulée (40) par une surface extérieure de révolution (20) que comporte ladite cage intérieure (2) et par une surface intérieure de révolution (30) que comporte ladite cage extérieure (3), et par l'adjonction de surfaces de fermeture connexes à ladite cavité (4) et à ladite cage intérieure (2) en bordure respectivement de ladite surface intérieure de révolution (30) et de ladite surface extérieure de révolution (20), et en ce que, après retrait complet de ladite matière plastique, on éloigne lesdites surfaces de fermeture.A method of manufacturing a sliding bearing (1) according to claim 19, characterized in that , prior to said injection or casting, said injection or casting chamber (40) is delimited by an outer surface of revolution (20) comprises said inner cage (2) and an inner surface of revolution (30) that includes said outer cage (3), and by the addition of closure surfaces associated with said cavity (4) and said cage inner (2) respectively bordering said inner surface of revolution (30) and said outer surface of revolution (20), and in that , after complete removal of said plastic material, said closing surfaces are moved away.
EP12194356.7A 2011-12-16 2012-11-27 Method for the manufacturing of a friction bearing Active EP2605084B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12194356.7A EP2605084B1 (en) 2011-12-16 2012-11-27 Method for the manufacturing of a friction bearing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11194060.7A EP2605083B1 (en) 2011-12-16 2011-12-16 Overmoulded timepiece journal bearing
EP12194356.7A EP2605084B1 (en) 2011-12-16 2012-11-27 Method for the manufacturing of a friction bearing

Publications (3)

Publication Number Publication Date
EP2605084A2 true EP2605084A2 (en) 2013-06-19
EP2605084A3 EP2605084A3 (en) 2014-01-29
EP2605084B1 EP2605084B1 (en) 2018-08-08

Family

ID=47216159

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11194060.7A Active EP2605083B1 (en) 2011-12-16 2011-12-16 Overmoulded timepiece journal bearing
EP12194356.7A Active EP2605084B1 (en) 2011-12-16 2012-11-27 Method for the manufacturing of a friction bearing

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11194060.7A Active EP2605083B1 (en) 2011-12-16 2011-12-16 Overmoulded timepiece journal bearing

Country Status (5)

Country Link
US (1) US20130155823A1 (en)
EP (2) EP2605083B1 (en)
JP (1) JP2013127458A (en)
CN (1) CN103163773A (en)
RU (1) RU2012154333A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH710837B1 (en) * 2015-03-11 2022-11-30 Csem Ct Suisse Delectronique Microtechnique Sa Rech Developpement Shockproof stopper for moving parts.
US11392091B2 (en) * 2017-07-31 2022-07-19 Rolex Sa Watch pivot device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2956394A (en) 1955-04-21 1960-10-18 Tissot Horlogerie Bearing element
FR1579777A (en) 1968-04-01 1969-08-29
FR1587976A (en) 1967-10-25 1970-04-03
CH559383B5 (en) 1970-07-06 1975-02-28 Portescap Shock absorber for watch pivot - has resilient cushion surrounding pivot in shock absorber body
CH583934B5 (en) 1971-12-28 1977-01-14 Portescap

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH243388A (en) * 1944-03-18 1946-07-15 Spahr Stotz Fritz Shock-proof journal bearing.
GB834559A (en) * 1955-04-21 1960-05-11 Tissot Horlogerie Bearing element and method of making the same
US2822225A (en) * 1955-05-18 1958-02-04 F I Saemann Ball bearing assembly
US2878638A (en) * 1956-07-20 1959-03-24 Jaeger Ets Ed Sound-proof and shock absorbing bearing for precision mechanisms
US3397531A (en) * 1965-07-01 1968-08-20 Tissot Horlogerie Bearing means for arbor of a watch runner
US3457719A (en) * 1966-02-03 1969-07-29 Kienzle Uhrenfabriken Gmbh Plastic bearing bushing
US3590575A (en) * 1970-02-06 1971-07-06 Hamilton Watch Co Oilless shockproof bearing for timepieces
US3922041A (en) * 1970-06-25 1975-11-25 Portescap Elastic pivot bearings
US3758178A (en) * 1972-02-23 1973-09-11 Pareohoc S A Shock absorbing bearing for timepiece and small apparatus
CH495673A4 (en) * 1973-04-06 1976-10-29 Seitz Sa Device for pivoting the face of a timepiece mobile
DE4136794A1 (en) * 1991-11-08 1993-05-19 Freudenberg Carl Fa SUPPORT DISC
DE4334985B4 (en) * 1993-10-14 2005-12-29 Stahlecker, Fritz Support disk for a support disk bearing of an OE spinning rotor and method for producing this support disk
DE19755725C2 (en) * 1997-12-15 1999-10-28 Ticona Gmbh Rotatable plastic rollers
FR2779096B1 (en) * 1998-05-28 2000-12-15 Skf France SUSPENSION STOP DEVICE
EP1320688B1 (en) * 2000-09-28 2004-12-01 Phoenix AG Joint
DE60137113D1 (en) * 2001-03-21 2009-02-05 Chronoswiss Uhren Gmbh clockwork
EP1986059A1 (en) * 2007-04-26 2008-10-29 ETA SA Manufacture Horlogère Suisse Pivoting device for an arbor inside a timepiece
JP5455115B2 (en) * 2009-10-07 2014-03-26 セイコーインスツル株式会社 Watch bearings, movements and portable watches

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2956394A (en) 1955-04-21 1960-10-18 Tissot Horlogerie Bearing element
FR1587976A (en) 1967-10-25 1970-04-03
FR1579777A (en) 1968-04-01 1969-08-29
CH559383B5 (en) 1970-07-06 1975-02-28 Portescap Shock absorber for watch pivot - has resilient cushion surrounding pivot in shock absorber body
CH583934B5 (en) 1971-12-28 1977-01-14 Portescap

Also Published As

Publication number Publication date
US20130155823A1 (en) 2013-06-20
EP2605083A1 (en) 2013-06-19
RU2012154333A (en) 2014-06-20
EP2605084A3 (en) 2014-01-29
EP2605083B1 (en) 2014-09-10
JP2013127458A (en) 2013-06-27
EP2605084B1 (en) 2018-08-08
CN103163773A (en) 2013-06-19

Similar Documents

Publication Publication Date Title
EP2605080B1 (en) Overmoulded timepiece wheel
EP2560055B1 (en) Pre-adjustment of the play of a horological wheel
EP3208667A1 (en) Magnetic escapement mobile for timepiece
FR3019866A1 (en) PULLEY DEVICE FOR BELT OR CHAIN, METHOD FOR MANUFACTURING HOLLOW SHAFT FOR SUCH DEVICE AND METHOD FOR ASSEMBLING SUCH DEVICE
FR2475166A1 (en) ASSEMBLY OF THE SHAFT OF A MACHINE ELEMENT, PARTICULARLY A PINION SHAFT, OF A TRANSMISSION MECHANISM
EP2917787B1 (en) Clock movement having a balance and a hairspring
EP2796940A2 (en) Clock component for receiving an organ by insertion
FR3057310B1 (en) DAMPER BEARING WITH AXIAL PRE-LOAD
EP2605084B1 (en) Method for the manufacturing of a friction bearing
EP2881803B1 (en) Timepiece cannon-pinion
CH711020B1 (en) Bearing and method of assembling such a bearing.
FR2827202A1 (en) Formation of retaining collar especially for wheel hub bearing uses two tools to deform and deploy hub end
CH716669B1 (en) Method of manufacturing a balance pivot shaft.
CH705911A2 (en) Over-molded smooth bearing for clockwork of timepiece, has core made of plastic and injected into revolution cavity and comprising outer cage and inner cage that is contained in cavity, where core is injected between cages
EP1431597A1 (en) Manufacturing method of a metallic ball joint
EP2333365A1 (en) Spacers with adjusted lengths for bearings
FR3120568A1 (en) Suspension stop provided with a ring for retaining a cover in relation to a support
CH712154A2 (en) Mobile magnetic watch exhaust.
CH713389A1 (en) System linking a tree to a room.
EP1996824B1 (en) Pivot with flexible connections and method of producing it
EP2555928B1 (en) Assembling method of a rolling bearing and mounting method of a vehicle wheel using such a bearing
EP0059657A1 (en) Servosteering valve adapted for simplified assembly
CH715828B1 (en) Watch movement fitted with two coaxial cannon wheels.
FR3098876A1 (en) Pulley device
EP3499318A1 (en) Oscillator system for a watch

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: G04B 31/00 20060101ALI20131220BHEP

Ipc: G04B 31/06 20060101ALI20131220BHEP

Ipc: G04B 31/02 20060101ALI20131220BHEP

Ipc: G04B 31/016 20060101AFI20131220BHEP

17P Request for examination filed

Effective date: 20140729

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

17Q First examination report despatched

Effective date: 20170523

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20180403

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1027704

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180815

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602012049405

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ICB INGENIEURS CONSEILS EN BREVETS SA, CH

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20180808

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1027704

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180808

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181208

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181108

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181109

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181108

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602012049405

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20190509

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20181127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181127

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20181130

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180808

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20121127

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180808

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230701

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20231019

Year of fee payment: 12

Ref country code: DE

Payment date: 20231019

Year of fee payment: 12

Ref country code: CH

Payment date: 20231201

Year of fee payment: 12