US3901021A - Automatic winding watch - Google Patents

Automatic winding watch Download PDF

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Publication number
US3901021A
US3901021A US481544A US48154474A US3901021A US 3901021 A US3901021 A US 3901021A US 481544 A US481544 A US 481544A US 48154474 A US48154474 A US 48154474A US 3901021 A US3901021 A US 3901021A
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US
United States
Prior art keywords
pinion
weight
bridge
automatic winding
gear
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
US481544A
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English (en)
Inventor
Hidetaka Tutiya
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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
Priority claimed from JP7537073U external-priority patent/JPS5022064U/ja
Priority claimed from JP7731373A external-priority patent/JPS5323177B2/ja
Application filed by Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Application granted granted Critical
Publication of US3901021A publication Critical patent/US3901021A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/006—Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices)
    • 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
    • G04B33/00—Calibers
    • 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
    • G04B5/10—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is not limited
    • G04B5/12—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is not limited acting in one direction only

Definitions

  • the traditional structure for mounting the automatic winding weight and its motion-transmitting pinion is such that depending pillar means arestudded on the conventional barrel and train wheel bridge for rotatably mounting the pinion which is rotatable in unison with the automatic winding weight and meshes with a gear rotatably passing from below through said bridge for transmitting motion therethrough to a barrelwinding gear train mounted on and above the said bridge, and finally to the barrel.
  • This bridge also mounts the conventional time-keeping gear train.
  • This traditional structure has given rise to considerable difficulty to the most desirable simultaneous assemblying of the barrel-winding gear train arranged between said automatic winding pinion and barreL: and substantial parts of the regular time-keeping gear train.
  • the said motion-transmitting gear must be rotatably mounted on an intermediate stationary member, preferably center wheel cock, arranged at an intermediate level between the said bridge and the known pillar plate. and indeed, in close proximity to the center of the movement where the center gear, fourth wheel and the like are erowdedly arranged, thus the arbor of the said transmitting gear being substantially impossible to arrange in position.
  • a representative arrangement of the motion-transmitting gear commonly adopted is such that the arbor is arranged at a somewhat remote distance from the movement center and the gear is formed into a two-stage mode, the upper stage portion being of smaller diameter than the lower stage portion so as to avoid interference with the center portion of the movement yet to cooperate with the barrel-winding gear train. and the larger diameter lower stage portion serving exclusively for cooperative engagement with the automatic weight pinion.
  • the said motion-transmitting gear must have an enlarged stop means provided at its lowermost end for effectively preventing occasional axial disengagement from position. Therefore, it is practically impossible to assemble it in one step together with substantial members of the barrel-winding and time-keeping gear trains on the common bridge.
  • the main object of the present invention is to provide an automatic winding watch devoid of the aforementioned several disadvantages and highly convenient in the assembly job. while satisfying the minimum thickness requirement.
  • the aforementioned conven tional motion-transmitting gear has been dispensed with, and thus the winding weight pinion directly meshes a first member of the barrel-winding gear train, this first member is mounted on a barrel-and-train wheel bridge, and in addition, the weight pinion is also mounted on the same bridge.
  • FIG. 1 is a schematic bottom plan view of a watch movement according to the first embodiment of the invention, wherein, an automatic winding weight has been illustrated in chain-dotted line and several wheel members in their outline configuration only.
  • FIG. 2 is an enlarged fragmentary elevational section of the watchrnovement, taken along section line IIII' of FIG. I.
  • FIG. 3 is enlarged elevational section of the watch movement taken along section line IIIIII' shown in FIG. 1.
  • FIG. 4 is an enlarged plan view of a click shown in FIG. 1.
  • FIG. 5 is a similar view to FIG. 1, showing a second embodiment of the invention.
  • FIG. 6 is an enlarge sectional view taken along section line VIVI' shown in FIG. 5.
  • FIG. 7 is an enlarged view similar to FIG. 2, taken along section line VII ⁇ /II shown in FIG. 5.
  • FIG. 8 is an enlarged sectional view taken along section line VIII-VIII shown in FIG. 5.
  • FIG. 9 is a similar view to FIG. I, showing a third embodiment of the invention.
  • FIG. 10 is a similar view to FIG. 2, taken along a section line XXl shown in FIG. 9.
  • FIG. II is an enlarged perspective view of a clutch spring shownxin' FIGS. 9 and I0.
  • numeral 1 represents a pinion which is fixedly attached to an oscillatable weight 31 which is shown in its substantial part in FIG. 2 and in plan configuration in FIG. I.
  • the pinion comprises a serrated lower part la for attachment of said weight 3I and an upper pinion proper lb rigidly unite cl'with each other.
  • the pinion proper 1b is housed completely in an idle space formed in a barrcl-and-train wheel bridge 11 and is arranged. see FIG. 2, to project above the bridge 11.
  • FIG. I and as is-shown in FIG.
  • first reduction gear wheel assembly 2 which comprises a one way rotatable ratchet wheel 2b.
  • This gear wheel assembly 2 further comprises an axially elongated pinion 20.
  • a pair of star pinions 2d and 2d are kept in meshing relationship with the ratchet wheel 2b and rotatably mounted on shaft portions 32 and 33, respectively, which are made integral with a mounting disc 20 arranged concentrically and rigidly with said elongated pinion 2e.
  • Ratchet wheel 2b is rotatably mounted on the lower extension shaft portion 20'.
  • star pinions at 33 has been omitted from FIG. I.
  • the lower shaft extension 20' is rotatably mounted in a bearing Ila which is mounted in turn rigidly on the bridge II,
  • the corresponding upper extension shaft 2c is rotatably mounted in a bearing 1211 which is mounted in turn on a conventional pillar plate 12 only partly shown in its section in FIGS. 2 and 3.
  • Numeral 8 identifies in FIG. 1 has been punched out from a phosphor bronze sheet and comprises an outer curved spring portion 8a, an inner curved spring portion 81) having a lateral interruption 8c, and two pawl projections 8d and 80, as shown specifically in FIG. 4.
  • These pawl projections normally engage with peripheral tooth on a second reduction gear 3a which is pressure fit on upper part of a rigid arbor or shaft 3 carrying integrally a second reduction pinion 3b, said reduction gear 3a meshing with said pinion portion 20.
  • Thearrangement and configuration of pawl projections 8d and 8e are so selected and designed that second reduction gear 3a is allowed to rotate in the counter clockwise direction in FIG. 1, but it is prevented from its performing the reverse rotation.
  • the click element 8 may easily be slipped into position embracing a headed stud pin 36 which has been studded on the plate 12 although not specifically shown. By. applying a slight lateral finger pressure, the click element 8 can easily be disengaged from position. Without performing such intentional disengagement of the click element, accumulated mechanical energy in a power spring to be described can not be releascd.
  • the lateral interruption 80 the stud-receiving open recess Sfdefined by the inner periphery of resilient inner curved portion 8b can beresiliently expanded and contracted as necessary during the attachment or disengagement of the click element in or out ofan assembled position.
  • Second reduction pinion 3h meshes with a winding gear 4 which is fixedly mounted on an arbor orshaft 37 rotatably mounted on and between the bridge II and plate 12 by means of respective bearings 11c and 121'.
  • a barrel mounted which cncascs the barrel spring as conventionally, although not specifically shown.
  • the barrel is formed with a barrel gear 5a a click element which which meshes in practice with conventional center wheel 38 for driving time display hands, not shown, although said barrel gear and said center wheel have been shown as if they be arranged in their mutually sep- 5 arated position.
  • third gear 13, further gear 14 and escape wheel 15 which pass through respective bores d, 30c and 30f of the intermediate bridge 30 with ample idle plays are rotatably mounted by and between the bridge 11 and pillar plate 12 by means of respective bearing pairs 11d; 12d, 1 le; I2e and 11f; 12f.
  • Numerals 39 and represent conventional anchor unit and balance complete, respectively.
  • the pinion l is supported on and by the bridge 11 and its effective portion 111 is arranged above the bottom surface of the bridge.
  • the only downwardly projected portion is that denoted la which registers substantially and horizontally to the oscillatable weight 31, and without use of a specific and separate mounting bridge from that shown at I]. In this way, a thinaspossible automatic winding mechanical watch movement can be realized.
  • numeral 101 represents a pinion unit which is 'rigidly attached to an oscillating weight 131- as'will be dethis'purpose a non-circular opening 121:: for snugly receiving the correspondingly shaped lowermost end of said lower part 101a.
  • a headed screw-member 122 is threaded into ,a tapped axial bore 1010 of pinionunit 1.01 from below in FIG.
  • Hub member 121 represents substantiallya thin and diametrally extending bar having two,semicircular end enlargements 121/) and 121(- which arefiXedly-attachcd to the correspondingly shaped shallow recesses as at 131a, FIG. 6, by glueing, welding or thelike .conventional attaching technique.
  • the hub member is formed at its central region with a similar semicircular shaped enlargement 121d arranged in opposition to the correspondingly shaped recess 131d of the oscillating weight 131, shown in the similar way as in the first embodiment, with a small clearance. All these enlargements 121b, l2lc and 12111 project, see FIG. 5, in the same direction, or more specifically rightwards in FIG. 5.
  • the oscillating eccentric weight 131 may have almost semicircular configuration when seen in FIG. 5 and the hub member extends from outside of the diameter of the semicircle of the eccentric weight and at its both ends into the connecting areas of the latter. Therefore, the weight 131 may have a largest possible mass when its thickness has a predetermined value.
  • the hub member extends from outside of the diameter of the semicircle of the eccentric weight and at its both ends into the connecting areas of the latter. Therefore, the weight 131 may have a largest possible mass when its thickness has a predetermined value.
  • eccentric weight-hub member assembly may provide an ample elastic structure against outside mechanical shocks.
  • the pinion proper lb is arranged at an upper plane above the upper surface of the bridge 111 when seen in FIG. 7 and meshes with a first reduction gear 10211 of first reduction wheel 102 which passes with ample clearance through an intermediate bridge 130, as before. and is rotatably mounted by and between the bridge 111 and the plate 112 by means of respective bearings 111a and 112a in the manner previously described.
  • the wheel 102 comprises a first reduction pinion 1020 which meshes with a loosely mounted second reduction gear 103a of second reduction wheel 103 rotatably mounted by and between the bridge 111 and the plate 112 by means of re spective bearings 111/) and 11212.
  • the wheel 103 passing with ample clearance through intermediate bridge 6 f.
  • the wheel 103 further comprises a loosely mounted 'ratch'e t wheel 1030 and a fixedly mounted disc l03d'having as'mall shaft projection 10 3gfma'de integral therewith and carrying thereon 'a star pihiori103g.
  • the structure and operation :of ratchet wheel and star pinion are same ceritrically with each other, asin the first embodiment Bearings 1110 and, l 120 correspond to those shown and described at 11c -,1'2t",i.r espectively, in the first embodiment.
  • the pinion proper 101b is rotatably mounted by means of ball bearing unit 100 and arranged on and above the upper surface of the bridge 111, thus the desired thin-as-possible-structure of the watch movement is further facilitated.
  • the operation is still further superior through the bearing structure but the assemblying facility is still facilitated and improved as before.
  • each of the main operating parts has been shown by the same reference numeral of the corresponding part of the first embodiment being supplemented by 200 for ready identification.
  • the eccentric and oscillatable weight-supporting hub member 221 is rotatably supported by the ball bearing 300 in the same way as in the second embodiment, which bearing is mounted fixedly inthe bridge 211 which is similar to that shown at 111 therein.
  • the weight pinion 201 is press-fit in the upper and inner race element 22011, a dust-preventing plug 240 being in turn press-fit into the pinion 201 at the upper end thereof.
  • the clutch spring 41 is shown specifically in FIG. 11 as shown, it has a central ring portion 411: perforated at its centerat 41b.
  • the ring portion 410 is provided withthree radially and substantially peripherally extending resilient arms, commonly denoted 410 in FIG. 11, each arm being formed with an enlarged and integral ring 410' perforated at 410, terminating into an inclinedly upwardly directing resilient pawl 41].
  • First reduction gear 202a is mounted loosely on its supporting arbor 202a and formed with three projections 42.
  • the clutch spring 41 is also loosely mounted at 41b on the said arbor 2020 and the perforations 41c surround said projections 42 with small clearances.
  • Reduction disc 2020 is fixedly attached to the arbor 2020.
  • This disc 202(- is formed with three openings 43 for engaging with said resilient pawls 41f, respectively,
  • Reduction disc 2021' is, in this embodiment, is formed with peripheral teeth 44 for engagement with a click element 208, so as to revolve in the barrel winding direction only.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Gear Transmission (AREA)
US481544A 1973-06-25 1974-06-20 Automatic winding watch Expired - Lifetime US3901021A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7537073U JPS5022064U (de) 1973-06-25 1973-06-25
JP7731373A JPS5323177B2 (de) 1973-07-09 1973-07-09

Publications (1)

Publication Number Publication Date
US3901021A true US3901021A (en) 1975-08-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
US481544A Expired - Lifetime US3901021A (en) 1973-06-25 1974-06-20 Automatic winding watch

Country Status (4)

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US (1) US3901021A (de)
DE (1) DE2430122A1 (de)
FR (1) FR2234591B1 (de)
GB (1) GB1442530A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5867454A (en) * 1996-02-10 1999-02-02 Seiko Instruments Inc. Automatic watch
US6485172B1 (en) * 1997-12-18 2002-11-26 Seiko Instruments Inc. Self-winding watch
US6685352B1 (en) * 1999-08-04 2004-02-03 Frederic Piguet S.A. Timepiece power reserve indicator device
US20060239126A1 (en) * 2005-01-21 2006-10-26 Jean-Francois Mojon Automatic pawl winding mechanism
EP3208663A1 (de) 2016-02-16 2017-08-23 MPS Micro Precision Systems AG Kugellager und anschlusssystem, das ein solches kugellager umfasst
US11480922B2 (en) * 2019-02-27 2022-10-25 Seiko Epson Corporation Timepiece

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2214065B1 (de) * 2008-12-01 2017-02-08 The Swatch Group Research and Development Ltd. Uhrwerk, das mit einem Vibrationswecker ausgestattet ist

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113416A (en) * 1960-03-30 1963-12-10 Movado Montres Self-winding watch
US3357174A (en) * 1964-12-10 1967-12-12 Zenith Montres Watch with automatic winding
US3733806A (en) * 1971-07-22 1973-05-22 Forster Bernhard Self-winding mechanism for watches

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1281260A4 (de) * 1960-11-16 1965-01-29
CH1488368A4 (de) * 1968-10-07 1972-10-13

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113416A (en) * 1960-03-30 1963-12-10 Movado Montres Self-winding watch
US3357174A (en) * 1964-12-10 1967-12-12 Zenith Montres Watch with automatic winding
US3733806A (en) * 1971-07-22 1973-05-22 Forster Bernhard Self-winding mechanism for watches

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5867454A (en) * 1996-02-10 1999-02-02 Seiko Instruments Inc. Automatic watch
SG80580A1 (en) * 1996-10-02 2001-05-22 Seiko Instr Inc Automatic watch
US6485172B1 (en) * 1997-12-18 2002-11-26 Seiko Instruments Inc. Self-winding watch
US6685352B1 (en) * 1999-08-04 2004-02-03 Frederic Piguet S.A. Timepiece power reserve indicator device
US20060239126A1 (en) * 2005-01-21 2006-10-26 Jean-Francois Mojon Automatic pawl winding mechanism
US7347618B2 (en) * 2005-01-21 2008-03-25 Richemont International S.A. Automatic pawl winding mechanism
EP3208663A1 (de) 2016-02-16 2017-08-23 MPS Micro Precision Systems AG Kugellager und anschlusssystem, das ein solches kugellager umfasst
US11480922B2 (en) * 2019-02-27 2022-10-25 Seiko Epson Corporation Timepiece

Also Published As

Publication number Publication date
GB1442530A (en) 1976-07-14
FR2234591B1 (de) 1978-07-13
DE2430122A1 (de) 1975-01-23
FR2234591A1 (de) 1975-01-17

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