EP0310416A2 - Pièce d'horlogerie - Google Patents

Pièce d'horlogerie Download PDF

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Publication number
EP0310416A2
EP0310416A2 EP88309097A EP88309097A EP0310416A2 EP 0310416 A2 EP0310416 A2 EP 0310416A2 EP 88309097 A EP88309097 A EP 88309097A EP 88309097 A EP88309097 A EP 88309097A EP 0310416 A2 EP0310416 A2 EP 0310416A2
Authority
EP
European Patent Office
Prior art keywords
stem
correction
timepiece
indication
corrector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP88309097A
Other languages
German (de)
English (en)
Other versions
EP0310416A3 (fr
Inventor
Masaru Kubota
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
Shiojiri Kogyo KK
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 Seiko Epson Corp, Shiojiri Kogyo KK filed Critical Seiko Epson Corp
Publication of EP0310416A2 publication Critical patent/EP0310416A2/fr
Publication of EP0310416A3 publication Critical patent/EP0310416A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/25—Devices for setting the date indicators manually
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
    • G04B27/04—Mechanical devices for setting the time indicating means by making use of the winding means with clutch wheel

Definitions

  • the present invention relates to a timepiece in which a calendar or time indication can be corrected.
  • a timepiece which employs a setting lever interlocked with a stem of the timepiece which may be moved manually from the exterior of the timepiece, and there is a yoke which engages with the setting lever.
  • a sliding pinion is moved into mesh with gear train members such as a setting wheel and a minute wheel during time correction and is moved into mesh with a calendar corrector operating wheel during calendar correction, e.g. date and day correction.
  • the sliding pinion is movable by the yoke between a position in which one side of the sliding pinion can drive the gear train members to perform time correction and another position in whcih the opposite side of the sliding pinion can engage the calendar corrector operating wheel to perform date and day correction. Therefore, the construction of the sliding pinion is extremely complicated and its manufacturing cost is therefore high. Further, since the sliding pinion has to be moved, some parts such as the yoke cannot be dispensed with so that adequate cost reduction cannot be achieved.
  • a timepiece having a stem and an indication corrector member such that the stem may be moved manually from a non correction to a correction position, in which a calendar or time indication of the timepiece can be corrected by the indication corrector member by effecting rotation of the stem, characterised in that the stem has a corrector member driving portion, the indication corrector member being drivingly disconnected from the stem and being drivingly connected thereto by way of the driving portion when in the non-correction and correction positions respectively.
  • the said driving portion is constituted by a projection of the stem.
  • the indication corrector member is preferably slidably mounted on the stem.
  • first and second indication correction members which are respectively arranged to effect time and calendar correction.
  • the stem may be movable in opposite axial directions to effect driving connection between the projection and the first and second indication correction members respectively.
  • the stem being movable in a predetermined axial direction so as to bring one only of said projections into driving engagement with the first indication correction member and being movable further in the said predetermined axial direction to cause driving engagement only between the other projection and the second indication correction member.
  • the first indication correction member preferably comprises a pinion which is in constant mesh with a setting gear, the setting gear meshing with a minute gear which is driven from a drive source.
  • FIGs 1, 4 and 5 there is shown a timepiece according to the present invention, the parts of the timepiece being shown in their normal or inoperative condition, i.e. in the condition in which neither the calendar nor the time is being adjusted.
  • the timepiece is provided with a plate 1 which acts as the main frame of the timepiece and with a stem 2 which acts as an outside operation member, i.e. is operable from the exterior of the timepiece.
  • a sliding pinion 3 is made of plastics material and is a loose or non-driving fit on the stem 2 in the normal or inoperative condition.
  • a first calendar corrector operating wheel 4 is also made of plastics material and is a loose fit on the stem 2 in the normal or inoperative condition.
  • a setting lever 5 is formed integrally with a rotatably mounted stub shaft 5 a .
  • the stem 2 has relatively smaller diameter portions 2 a , 2 b , 2 e and relatively larger diameter portions, or projections,2 c , 2 d .
  • the sliding pinion 3 is a loose fit on the smaller diameter portion 2 a
  • the first calendar corrector operating wheel 4 is a loose fit on the smaller diameter portion 2 b
  • the smaller diameter portions 2 a , 2 b are disposed on opposite sides of the larger diameter portion 2 c .
  • no drive can be imparted from the stem 2 either to the sliding pinion 3 or to the first calendar correction operating wheel 4.
  • the larger diameter portion 2 c frictionally engages the first calendar corrector operating wheel 4 during date and day correction, while the larger diameter portion 2 d frictionally engages the sliding pinion 3 during time correction.
  • the smaller diameter portion 2 e is positioned by the setting lever 5.
  • a clutch plate 6 is rotatably mounted on a shaft or dowel 1 a provided on the plate 1.
  • the clutch plate 6 is rotatably mounted on a shaft or dowel 1 a provided on the plate 1.
  • the clutch plate 6 is provided with a "click" or detent portion 6 a which abuts against the setting lever 5, the latter constituting a member for changing the time and calendar indications (not shown).
  • the stem 2 is maintained in its pulled-out or pushed-in condition by the setting lever 5.
  • the clutch plate 6 positions the stem 2 and determines the operation force of the latter in accordance with the shape of the click portion 6 a .
  • the clutch plate 6 is also provided with a resilient portion 6 b which, in operation, produces the force to cause the clutch plate 6 to rotate counter-clockwise about the shaft 1 a .
  • the clutch plate 6 is provided with a hole 6 c in which is rotatably mounted a lower pivot 7 c of a third wheel and pinion 7 which is made of plastics material and which is integrally formed with a wheel 7 a ( Figure 4) and a pinion 7 b .
  • the abutment plate 6 has an abutment portion 6 d which (as best seen in Figure 4) abuts a plate dowel 1 b of the plate 1 in the vicinity of the hole 6 c to determine the distance between the axis of a centre wheel and pinion 13 and that of the third wheel and pinion 7 to enable them to mesh with each other smoothly.
  • a gear train bridge 8 ( Figure 4) which is integrally made of plastics material holds the third wheel and pinion 7, a fourth wheel and pinion 14 and a minute wheel or gear 12 in position.
  • a setting wheel or gear 9 is integrally made of plastics material and is rotatably mounted on a shaft portion 8 a ( Figure 4) forming part of the gear train bridge 8.
  • the setting wheel 9 is in mesh with a gear portion 3 a of the sliding pinion 3 at all times. That is to say, the sliding pinion 3 is driven by the setting wheel 9 even in the normal or inoperative condition so as to rotate about the stem 2.
  • the gear train bridge 8 is provided with a bearing portion 8 b which is disposed beneath the shaft portion 8 a , the bearing portion 8 a and a bearing portion 1 c of the plate 1 serving to position a tip portion 2 f of the stem 2 so that there is a space H between the tip portion 2 f and the plate 1 within which the clutch plate 6 is loosely mounted.
  • the degree of looseness of the setting wheel 9 is determined by a supporting plate 10 which presses down the upper surface of the shaft portion 8 a of the gear train bridge 8.
  • the supporting plate 10 is provided with a setting lever spring portion 10 a ( Figure 5) for pressing down the setting lever 5.
  • the construction shown in the drawings also comprises a circuit substrate 11; the minute wheel 12 which meshes with the setting wheel 9; the centre wheel and pinion 13; and the fourth wheel and pinion 14.
  • the centre wheel and pinion 13 and the fourth wheel and pinion 14 are gears to which a minute hand (not shown) and a seconds hand (not shown) are respectively attached.
  • the construction additionally comprises a tubular centre member 15; an hour wheel 16; a second calendar corrector operating wheel 17; and a stator 18 which determines the degreee of looseness of the clutch plate 6 in the vicinity of the lower pinion 7 c of the third wheel and pinion 7, the stator 18 being one of the members of a known motor for a timepiece.
  • the sliding pinion 3 and the first calendar corrector operating wheel 4 are positioned by the plate 1 and the wall of the gear train bridge 8 respectively with a predetermined degree of looseness, and are a loose or non-driving fit on the stem 2.
  • the click portion 6 a of the clutch plate 6 is engaged with the setting lever 5, thereby causing the plate dowel 1 b and the abutment portion 6 d to abut each other securely.
  • a centre wheel 13 a of the centre wheel and pinion 13 and the third wheel pinion 7 b are in mesh with each other with an appropriate centre distance therebetween.
  • the other members of the construction shown such as the gear train portions perform their known movements.
  • the larger diameter portion 2 c of the stem 2 is frictionally or drivingly engaged with the first calendar corrector operating wheel 4 which has previously been loosely mounted on the smaller diameter portion 2 b .
  • the rotational force of the stem 2 which is produced by manually rotating it from the exterior of the timepiece is transmitted to the first calendar corrector operating wheel 4 and to the second calendar corrector operating wheel 17, thereby carrying out a date and day correction by a known date and day mechanism.
  • the sliding pinion 3 at this time fits loosely on the smaller diameter portion 2 a of the stem 2 in the same way as in the normal condition of the parts so that rotation of the stem 2 does not cause rotation of the sliding pinion 3 at this time.
  • the stem 2 is further pulled radially outwardly from the first changing step position shown in Figure 2 to a second changing step position shown in Figure 3, such movement of the stem 2 causing further rotation of the setting lever 5.
  • the setting lever 5 and the stem 2 are positioned at the next location by the shifting of the setting lever 5 to another recess of the click portion 6 a of the clutch plate 6.
  • the click spring portion 6 a of the clutch plate 6 is moved by the setting lever 5, the clutch plate 6 rotates clockwise upon the plate dowel 1 a as a result of the reaction force of the resilient portion 6 b .
  • the abutment portion 6 d which maintains the appropriate centre distance between the centre wheel and pinion 13 and the third wheel and pinion 7 in the first changing step, moves out of engagement with the plate dowel 1 b in order to move the third wheel lower pivot hole portion 6 c and thereby move the centre wheel 13 a out of engagement with the third wheel pinion 7 b .
  • the sliding pinion 3 which has previously been loosely fitted on the smaller diameter portion 2 a of the stem 2, frictionally or drivingly engages the larger diameter portion 2 d thereof.
  • the rotational force of the stem 2 which is produced by manually rotating it from the exterior of the timepiece is transmitted to the sliding pinion 3 so as to effect time correction by rotating the setting wheel 9 and minute wheel 12. Accordingly, rotation is effected of the centre wheel and pinion 13 and the hour wheel 16 to which a minute hand (not shown) and an hour hand (not shown) are attached respectively.
  • the first calendar corrector operating wheel 4 is so constructed that, at this time, it is moved out of engagement with the larger diameter portion 2 c of the stem 2 which it frictionally engages when in the first changing step position, the wheel 4 being moved to a position in which it loosely fits on the smaller diameter portion 2 a and thus becomes free. Therefore, date and day correction cannot be carried out at this time even though the stem 2 is being rotated. Further, due to engagement between a dowel 5 c provided on the setting lever 5 and a reset pattern 11 a , resetting is effected.
  • the click portion 6 a is integrally formed with the clutch plate 6, thereby achieving a smooth changing mechanism.
  • the setting lever 5 can be moved out of engagement with the click portion 6 a of the clutch plate 6 and then becomes free. Consequently, attachment and detachment of the stem 2 can be achieved without affecting the other parts by depressing a recess 5 b provided at the tail portion of the setting lever 5.
  • the clutch plate 6 engages with the setting lever 5 at the click portion 6 a , and the resilient portion 6 b produces a force on the stem and holds and provides a mounting for the third wheel and pinion 7 and thus for a portion of the gear train.
  • time correction with a stable operation force acting on the stem 2 can be carried out under a no-load condition of attachment and detachment of a part of the gear train during time correction.
  • all of the gear train members can be made of plastics, thereby achieving an inexpensive timepiece body.
  • the embodiment described above employs frictional engagement to impart drive to the sliding pinion 3 and the first calendar corrector operating wheel 4 for correcting purposes.
  • correction can also be effected by engagement of a sliding pinion 3 having a rectangular hole or a first calendar corrector operating wheel 4 with an angular portion of a stem 2.
  • the axis of the setting wheel 9 is constituted by a gear train bearing in the embodiment described above, but a member such as a sweep seconds portion of the gear train can also be employed.
  • a gear train portion can be attached or detached by operating the third wheel lower pivot 7 c in the illustrated embodiment, but this can be achieved by operating both the upper and lower pivots simultaneously or only the upper pivot.
  • the illustrated embodiment employs both a calendar corrector operating wheel 4 and a sliding pinion 3, it is possible to arrange that an axially extending projection of the stem 2 resiliently engages only with the calendar corrector operating wheel 4.
  • the sliding pinion 3 and the first calendar corrector operating wheel 4 are a loose fit on the projecting portions of the stem 2 in the normal condition. Therefore, date and day correction and time correction can be effected with fewer parts and the members of the gear train employed including the sliding pinion 3 and the first calendar correcting operating wheel 4 can be made of plastics with a simple configuration. Consequently an inexpensive timepiece can be produced.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Powder Metallurgy (AREA)
  • Hard Magnetic Materials (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
EP88309097A 1987-06-19 1988-09-30 Pièce d'horlogerie Withdrawn EP0310416A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62151453A JP2665590B2 (ja) 1987-06-19 1987-06-19 希土類―鉄―ボロン系磁気異方性焼結永久磁石原料用合金薄板並びに磁気異方性焼結永久磁石原料用合金粉末，及び磁気異方性焼結永久磁石
JP151453/87 1987-10-02

Publications (2)

Publication Number Publication Date
EP0310416A2 true EP0310416A2 (fr) 1989-04-05
EP0310416A3 EP0310416A3 (fr) 1989-07-12

Family

ID=15518908

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88309097A Withdrawn EP0310416A3 (fr) 1987-06-19 1988-09-30 Pièce d'horlogerie

Country Status (2)

Country Link
EP (1) EP0310416A3 (fr)
JP (1) JP2665590B2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654225A1 (fr) * 1989-11-06 1991-05-10 Timex Corp Mouvement de montre analogique a trois aiguilles.

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5049335A (en) * 1989-01-25 1991-09-17 Massachusetts Institute Of Technology Method for making polycrystalline flakes of magnetic materials having strong grain orientation
US5486224A (en) * 1993-12-28 1996-01-23 Sumitomo Metal Industries, Ltd. Powder mixture for use in compaction to produce rare earth iron sintered permanent magnets
US5666635A (en) 1994-10-07 1997-09-09 Sumitomo Special Metals Co., Ltd. Fabrication methods for R-Fe-B permanent magnets
DE69716588T2 (de) * 1996-04-10 2003-06-12 Showa Denko K.K., Tokio/Tokyo Gusslegierung für die Herstellung von Dauermagneten mit seltenen Erden und Verfahren zur Herstellung dieser Legierung und dieser Dauermagneten
US6403024B1 (en) 1999-02-19 2002-06-11 Sumitomo Special Metals Co., Ltd. Hydrogen pulverizer for rare-earth alloy magnetic material powder using the pulverizer, and method for producing magnet using the pulverizer
US7390369B2 (en) 2003-04-22 2008-06-24 Neomax Co., Ltd. Method for producing rare earth based alloy powder and method for producing rare earth based sintered magnet
JP4391897B2 (ja) 2004-07-01 2009-12-24 インターメタリックス株式会社 磁気異方性希土類焼結磁石の製造方法及び製造装置
JP5047491B2 (ja) * 2005-11-24 2012-10-10 三菱電機株式会社 希土類―鉄−ボロン系磁石用合金及びその製造方法、製造装置
RU2461441C2 (ru) 2007-09-25 2012-09-20 Улвак, Инк. Устройство вторичного охлаждения литых тонких лент из сплава на основе неодима, железа и бора и устройство для литья тонких лент из сплава на основе неодима, железа и бора
JP6305916B2 (ja) 2012-03-30 2018-04-04 インターメタリックス株式会社 ＮｄＦｅＢ系焼結磁石

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2136528A1 (de) * 1970-07-30 1972-02-03 Suwa Seikosha Kk Uhr mit einer Einstelleinrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1325233A (en) * 1970-07-30 1973-08-01 Suwa Seikosha Kk Timepiece mechanism
JPS6115943A (ja) * 1984-07-03 1986-01-24 Kawasaki Steel Corp 希土類系永久磁石薄帯
JPS6233402A (ja) * 1985-08-07 1987-02-13 Tohoku Metal Ind Ltd 希土類磁石の製造方法
JPS62131503A (ja) * 1985-12-04 1987-06-13 Sumitomo Metal Mining Co Ltd 樹脂磁石用希土類−鉄−ホウ素系合金粉末の製造方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2136528A1 (de) * 1970-07-30 1972-02-03 Suwa Seikosha Kk Uhr mit einer Einstelleinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654225A1 (fr) * 1989-11-06 1991-05-10 Timex Corp Mouvement de montre analogique a trois aiguilles.

Also Published As

Publication number Publication date
JP2665590B2 (ja) 1997-10-22
EP0310416A3 (fr) 1989-07-12
JPS63317643A (ja) 1988-12-26

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