EP0278338B1 - Mécanisme inverseur pour dispositif de remontage automatique de pièce d'horlogerie - Google Patents

Mécanisme inverseur pour dispositif de remontage automatique de pièce d'horlogerie Download PDF

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Publication number
EP0278338B1
EP0278338B1 EP88101299A EP88101299A EP0278338B1 EP 0278338 B1 EP0278338 B1 EP 0278338B1 EP 88101299 A EP88101299 A EP 88101299A EP 88101299 A EP88101299 A EP 88101299A EP 0278338 B1 EP0278338 B1 EP 0278338B1
Authority
EP
European Patent Office
Prior art keywords
pawl
winding wheel
spring
reversing mechanism
rivet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88101299A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0278338A1 (fr
Inventor
Willy Meier
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.)
Fabrique Ebel SA
Original Assignee
Fabrique Ebel SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fabrique Ebel SA filed Critical Fabrique Ebel SA
Publication of EP0278338A1 publication Critical patent/EP0278338A1/fr
Application granted granted Critical
Publication of EP0278338B1 publication Critical patent/EP0278338B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/04—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is limited
    • G04B5/08—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is limited acting in both directions

Definitions

  • the present invention relates to automatic winding devices by oscillating weight of timepieces.
  • the invention relates to a reversing mechanism for such an automatic winding device.
  • the automatic winding of a timepiece is ensured by an assembly comprising a pivoting oscillating mass which is coupled to the mainspring barrel by means of an reversing mechanism so that the mass can deliver energy kinetics for winding the spring regardless of its direction of rotation.
  • reversing mechanisms that which includes, for each direction of rotation of the oscillating mass, a ratchet wheel and a pawl loaded by a spring.
  • the pawls and their associated springs are carried by a common winding wheel which is alternately coupled to the winding reduction gear via the respective pawls acting on the ratchet wheels.
  • a pawl plate associated with a mounting ring coaxial with the plate but spaced therefrom.
  • Each pawl is mounted articulated on a pivot tightened between the plate and the ring and cooperates with a spring anchored in the plate by means of a pin specially provided for this anchoring.
  • the object of the invention is to provide a reversing mechanism of the general type mentioned above, having a simplified construction, so as to make assembly as easy as possible.
  • the invention therefore relates to a reversing mechanism for an automatic winding device by oscillating weight of a timepiece, comprising a winding wheel mounted coaxially with two ratchet wheels arranged on either side of this wheel which carries on each of its faces at least one pawl loaded by a spring and cooperating respectively with one of the ratchet wheels, the assembly thus formed being inserted between the kinematic chain interposed between the oscillating mass and the barrel of the mainspring of the timepiece, the pawls assigned to the transmission of the rotation of said mass being hinged respectively on pivoting members secured to said winding wheel, characterized in that the pivoting member carrying the pawl assigned to the one of the directions of rotation of the mass serves at the same time as an anchoring member for the spring which loads the pawl assigned to the transmission of the other direction of rotation of said mass.
  • each pawl is mounted in common with a spring which loads the other pawl, on a single pivot member. This results not only in saving space but also in appreciable ease of assembly.
  • the winding wheel 1 of the reversing mechanism comprises a plate 1a and a barrel 1b which is freely engaged on a pivot axis 2.
  • the latter is mounted for rotation between a plate 3a and a bridge 3b of the timepiece.
  • the plate 1 a of the winding wheel 1 comprises a crown 1 c which meshes with the pinion 4 integral in rotation with the oscillating mass 5.
  • Axis 2 forms a mobile with a first ratchet wheel 6 and a transmission wheel 7 meshing with a mobile 8 of a reduction gear leading to the barrel (not shown) of the mainspring of the timepiece, in accordance with a arrangement which is well known to specialists.
  • the pinion 10 is engaged with an intermediate wheel 11 also meshing with the mobile 8 of the reduction gear. It should be noted that the sectional view in FIG. 1 corresponds to the broken section line appearing in FIG. 7.
  • FIG. 6 shows that the plate 1a of the winding wheel 1 is pierced with holes 12 located respectively at 3, 6, 9 and 12 o'clock (FIG. 3), each hole being delimited by two opposite straight edge portions 12a joined by two curved edge portions 12b.
  • Each of these holes 12 receives a rivet 13 used for mounting on the winding wheel 1 of an assembly formed respectively by pawls 14a to 14d and springs 15a to 15d.
  • Each rivet 13 has a rod 16 (FIGS. 4 and 5) provided at one of its ends with a flange 17, a peripheral segment of which is cut out and which thus has a straight edge 18.
  • a cylindrical portion 19 of low height of the rod 16, located near the flange 17, serves as an articulation bearing for the pawl 14a to 14d engaged on the rivet 13 considered.
  • the rest of the rod 16 has two diametrically opposite flats 20, fitting on the straight edges 12a of the holes 12 of the winding wheel 1.
  • each ratchet wheel 6 and 9 cooperates with two pawls respectively 14a, 14b and 14c, 14d with which the springs 15c, 15d and 15a, 15b are associated, respectively, it being understood that the pawl ( 14a, for example) assigned to a given ratchet wheel (6, for example) is mounted articulated on the rivet 13 which at the same time supports the spring (15a, for example) which loads the pawl (14c, for example) acting on the other ratchet wheel (9, for example).
  • the advantage of the double arrangement, visible in FIG. 3, is that the tips of the pawls acting on the same ratchet wheel can be offset by half a tooth, which reduces the minimum stroke by half. the oscillating mass required to obtain a winding action, compared to the case where only one pawl per ratchet wheel is provided.
  • the winding wheel 1 rotates in the direction of the arrow F2
  • the wheel 9 is wedged on the pinion 10 which then drives the wheel 8 in the direction of the arrows F3 thanks to the intermediate wheel 11.
  • each rivet 13 has at its free end a conical recess 21 which is coaxial with the rivet. In its mounted position, each rivet 13 traps a pawl 14a to 14d between its flange 17 and the opposite face of the board 1a. Each pawl has for this purpose an articulation portion 22 which adjusts to the cylindrical portion 19 of the corresponding rivet. It also includes an active heel 23 which cooperates with the ratchet wheel 6 or 9 located on the same side of the board 1a.
  • each rivet opposite the flange 17 protrudes from the board 1 has a certain height to receive the fixing portion 24 of a spring 15a to 15d from which extends an active elastic blade 25 cooperating with the pawl 14a to 14d conjugate being on the same face of the board 1a.
  • the free end of each active elastic blade 25 bears against a straight edge 26 formed on the articulation portion 22 of the pawl 14a to 14d with which it cooperates.
  • each spring 15a to 15d has a hole 27 of the same shape as the holes 12 of the board 1a.
  • the springs are thus locked in rotation on their corresponding rivet while they are also axially blocked by an outward deformation of the end of the rod of each rivet, operated after mounting of each assembly on the board 1a. This deformation operation acts as riveting.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission Devices (AREA)
  • Electromechanical Clocks (AREA)
  • Pinball Game Machines (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
  • Specific Conveyance Elements (AREA)
  • Replacement Of Web Rolls (AREA)
  • Vending Machines For Individual Products (AREA)
  • Manufacture Of Motors, Generators (AREA)
EP88101299A 1987-02-06 1988-01-29 Mécanisme inverseur pour dispositif de remontage automatique de pièce d'horlogerie Expired - Lifetime EP0278338B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH419/87 1987-02-06
CH41987A CH667176GA3 (enrdf_load_stackoverflow) 1987-02-06 1987-02-06

Publications (2)

Publication Number Publication Date
EP0278338A1 EP0278338A1 (fr) 1988-08-17
EP0278338B1 true EP0278338B1 (fr) 1990-10-24

Family

ID=4186597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88101299A Expired - Lifetime EP0278338B1 (fr) 1987-02-06 1988-01-29 Mécanisme inverseur pour dispositif de remontage automatique de pièce d'horlogerie

Country Status (6)

Country Link
EP (1) EP0278338B1 (enrdf_load_stackoverflow)
JP (1) JPS63196882A (enrdf_load_stackoverflow)
CH (1) CH667176GA3 (enrdf_load_stackoverflow)
DE (1) DE3860835D1 (enrdf_load_stackoverflow)
HK (1) HK68693A (enrdf_load_stackoverflow)
SG (1) SG54793G (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2696251A1 (fr) * 1992-09-25 1994-04-01 Cely Francois Pendule à crémaillère remontable par retournement.
DE69919509T2 (de) 1999-04-23 2005-09-01 Rolex Sa Uhrwerk mit Schwungmassen-Selbstaufzug
EP3018535B1 (fr) 2014-11-07 2018-09-05 Montres Breguet SA Dispositif de remontage à agencement d'entraînement unidirectionnel
JP7260446B2 (ja) * 2019-09-12 2023-04-18 セイコーウオッチ株式会社 切換伝え車、自動巻機構、時計用ムーブメント及び時計
CH719254A1 (de) 2021-12-15 2023-06-30 Richemont Int Sa Planetengetriebegleichrichter und Automatikaufzug für Uhren.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH287935A (de) * 1951-09-25 1952-12-31 Antoine Gazda Selbstaufzugs-Uhr.
FR1114120A (fr) * 1953-11-28 1956-04-09 Tavannes Watch Co Sa Pièce d'horlogerie à remontage automatique
CH344370A (fr) * 1959-09-29 1960-01-31 Martel Watch Co S A Mécanisme inverseur pour remontage automatique de pièce d'horlogerie

Also Published As

Publication number Publication date
CH667176GA3 (enrdf_load_stackoverflow) 1988-09-30
SG54793G (en) 1993-07-09
JPH0565119B2 (enrdf_load_stackoverflow) 1993-09-17
DE3860835D1 (de) 1990-11-29
EP0278338A1 (fr) 1988-08-17
HK68693A (en) 1993-07-23
JPS63196882A (ja) 1988-08-15

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