EP1248164B1 - Uhrwerk - Google Patents

Uhrwerk Download PDF

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Publication number
EP1248164B1
EP1248164B1 EP20010201246 EP01201246A EP1248164B1 EP 1248164 B1 EP1248164 B1 EP 1248164B1 EP 20010201246 EP20010201246 EP 20010201246 EP 01201246 A EP01201246 A EP 01201246A EP 1248164 B1 EP1248164 B1 EP 1248164B1
Authority
EP
European Patent Office
Prior art keywords
wheel
cannon
hour wheel
pinion
timepiece movement
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
EP20010201246
Other languages
English (en)
French (fr)
Other versions
EP1248164A1 (de
Inventor
Marco Bettelini
Theodor Schoenenberger
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 DE2001612036 priority Critical patent/DE60112036T2/de
Priority to EP20010201246 priority patent/EP1248164B1/de
Publication of EP1248164A1 publication Critical patent/EP1248164A1/de
Application granted granted Critical
Publication of EP1248164B1 publication Critical patent/EP1248164B1/de
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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • 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
    • G04B19/02—Back-gearing arrangements between gear train and hands

Definitions

  • the present invention relates to a movement for a timepiece comprising a plate, a needle display device, a gear train connecting training means to said needles, said train comprising a wheel drive at least indirectly with said drive means and secured to a pivoting roadway on a tenon mounted in a gear train, a barrel wheel disposed on the roadway, the drive wheel and the barrel wheel extending on either side of said platen.
  • a movement for a timepiece comprising a plate, a needle display device, a gear train connecting training means to said needles, said train comprising a wheel drive at least indirectly with said drive means and secured to a pivoting roadway on a tenon mounted in a gear train, a barrel wheel disposed on the roadway, the drive wheel and the barrel wheel extending on either side of said platen.
  • Figure 1 schematically shows part of a movement with second in the center as described in the prior art.
  • This figure 1 lets appear the relative positions of the time display mobiles.
  • a second mobile 101 pivotally mounted in a stone 102, itself driven in a gear train 103.
  • the axle 104 of the second gear is arranged in a center tube 105, said center tube 105 being driven through a plate 106.
  • the second axis 104 comprises, in its median part, an annular bulge 107 having a diameter substantially equal to the inner diameter of the center tube 105.
  • Said center tube 105 thus fulfills the function of radial guide for the axis of second 104.
  • the roadway 108 is rotatably mounted on said center tube 105, the base of the floor 108 resting on the top of the plate 106. It may be noted that the center tube 105 also performs a radial guide function for the floor 108.
  • the pinion of the roadway 109 meshes with a timer wheel 110, secured to a timer pinion 111 which meshes with a gun wheel 112. Said gun wheel 112 is rotatably mounted on the roadway 108 which serves it therefore radial guide.
  • a first disadvantage presented by such a type of movement appears from Figure 1 and relates to manufacturers of movements of timepieces, in particularly when they deliver these movements to customers who then follow them in watch boxes of their choice.
  • the barrel wheel is disposed on said platen, so outside the movement.
  • the said shotgun since the said shotgun must be free to turn around the pavement, it is typically simply "threaded” on said pavement, and therefore free axially. Therefore, the gun wheel is likely to come off its taken with the timer gear during transport from the manufacturer of movement at his client's.
  • the dial is usually pressed on the movement.
  • the cannon wheel can be released entirely from the roadway and lose during transport movements to the casing post, which also generates additional production costs.
  • a known solution of the prior art to remedy this problem consists in add a washer on the pavement tube once the barrel wheel is put into place, so as to block the latter axially.
  • This solution however, a disadvantage in that it requires the manufacture of an additional piece, typically a washer, and the implementation of an additional step in the method of mounting the movement, for laying said washer.
  • the present invention therefore has the main purpose of overcoming the disadvantages of the aforementioned prior art by providing a movement for a timepiece, allowing in particular to ensure a hold in the grip of the gun wheel with the Timer gear during transport movements before operation casing.
  • the subject of the invention is a movement for a timepiece according to the object defined by claim 1 of the patent.
  • the structure according to the invention makes it possible to prevent the cannon wheel from escaping from the roadway during the transport stage and therefore be lost or damaged during the setting of the dial, while suppressing the mentioned control step previously.
  • An additional advantage of the invention stems from the fact that the means of retaining the barrel wheel on the pavement tube are integral parts of these two elements. The realization of the retaining means therefore does not require the setting implementation of an additional step, as such, in the manufacturing process some movement.
  • said means for restraint are of the type notch. They may include a bead and a complementary grooves respectively on the tube of the barrel wheel and on the pavement tube, for example.
  • An additional advantage of the present invention is that said bead is made by an extra thickness of material on the tube of the wheel to barrel, said overthickness being located substantially at the level where the needle of hours is then hunted.
  • the hunting of a needle usually gives instead of a creep of material on its support that can increase with time. This phenomenon can cause a game of the needle relative to its support, or even the detachment of the needle from its support.
  • the structure of the tube of the wheel barrel according to the invention in particular by virtue of said oversize, material creep on the tube is limited and a good hold of the hour hand is ensured in the time.
  • the present invention therefore also aims to overcome the disadvantages of the aforementioned prior art by providing a movement for timepiece having an acceptable manufacturing quality at a low cost price.
  • the subject of the invention is also a movement for a workpiece of the type mentioned above, characterized by the fact that it does not include of center tube and that there is provided an annular shoulder on the plate of the movement serving as radial guide to the barrel wheel.
  • the uncertainty overall radial is strongly lowered compared to that of art movements prior to insofar as a coin, and therefore the uncertainty that accompanies it, have been deleted. It is worth recalling here the economic importance of simply remove a part in a movement, especially when this is a cheap move made to at least several hundred thousand even several million copies.
  • the various uncertainties mentioned above were partly dissociated to the extent that the roadway no longer fulfills the radial guide function for the cannon wheel.
  • the radial clearance existing at the level of the impeller does not absolutely does not depend on the radial uncertainties inherent in mobile manufacturing second and floor.
  • the radial clearance of the axis of rotation of the needle of hours can be properly controlled, regardless of the uncertainties at the level of the second mobile and the roadway.
  • the barrel wheel 1 has a structure conventional.
  • Three radial extensions 2 connect the toothed wheel 3 to the barrel 4.
  • three arms 5 substantially in the form of arcs of circle, each extend from one of said radial extensions 2.
  • These arms 5 have the function of regulating axial positioning relative to the cannon wheel 1 and the roadway (not shown in this figure) thus eliminating the need for a foil spring, usually used to ensure this function.
  • Figure 2 also reveals the particular characteristics of the gun wheel 1, namely the fact that the inside of its barrel 4 has a bead ring 6.
  • FIG. 3 makes it possible to better understand the interest of said bead 6 since it is represented in its service position, that is to say when the gun wheel 1 is arranged on the floor 7.
  • the movement for a timepiece visible in part in this figure is type with center second.
  • a bridge of cogwheel 8 and a platinum 9 defining a cage in which is the essence of the movement.
  • the trolley bridge 8 carries stones 10, in which are pivotally mounted mobile.
  • a second mobile 11 in the center and a mobile Timer 12.
  • the second mobile 11 is driven by an exhaust pinion (not shown) through the second wheel 13.
  • the second gear 14 meshes with a medium wheel (not shown) integral with a pinion average (not shown) being engaged with the drive wheel 15 mounted to friction on the pavement 7.
  • the pavement 7, arranged directly on the mobile of second 11, then transmits its rotational movement to the timer 12 via the wheel Timer 16.
  • the radial guide of the roadway 7 is made directly by the movable second 11, via two annular beads 17 formed on the axis of second 18.
  • the timer gear 19, passing through an orifice 20 formed through the plate 9, is engaged with the barrel wheel 1, disposed on the top of said cage, and communicates to him his rotational movement.
  • the cannon wheel 1 and the roadway 7 comprise respectively complementary means for axially retaining said wheel cannon 1 on the floor 7, especially during the transport stages.
  • Said means complementary are of type notch, specifically, the tube 21 has opposite the bead 6 of the gun wheel 1 an annular groove 22 of complementary form.
  • the outer face of the plate 9 further comprises an annular shoulder 23 acting as a radial positioning guide to said cannon wheel 1.
  • the gun wheel 1 is placed on the roadway 7 by "clipping", that is to say by elastic deformation of material.
  • the cannon wheel 1 is first threaded on the roadway 7 until the bead 6 of the wheel barrel abuts on a bead 23 located immediately above the groove 22 of the 21.
  • a slight pressure on the barrel wheel 1 causes the elastic deformation of the barrel 4, allowing the bead 6 to cross said bead 23 and to be housed in the groove 22, which ensures the establishment of said barrel wheel 1 on the plate 9.
  • said wheel with cannon 1 can not stand alone from its location during transport.
  • the step of setting up the cannon wheel 1 on the floor 7 does not requires no modification of the conventional assembly process, because of the simplicity and ingenuity of the retaining means 6, 22.
  • the annular bead 6 formed in the tube 4 of the barrel wheel 1 is constituted by an overthickness of material and not simply by deformation. This characteristic has the important consequence material creep that takes place when the hour hand is set (no represented), is located at the level of said overthickness. The deformation suffered by the gun wheel 1 during this assembly step is therefore limited to this region. Of more, once the needle is in place, material creep continues slowly during time and the existence of said overthickness, disposed at the same level as the needle, gives the positioning of the needle better durability over time than in the case of a conventional barrel wheel tube.
  • the timer mobile 12 is preferentially made of steel, brass or plastic, while the roadway 7 is made of steel or brass and that the gun wheel 1 is made of material plastic, such as polyoxymethylene or polyacetal.
  • material plastic such as polyoxymethylene or polyacetal.
  • the gun wheel 1 is guided radially by an annular shoulder 23 formed on the top of the plate 9 and nor by the roadway 7, as is typically the case in the prior art.
  • This technical advantage contributes also to lower the cost price of the movement according to the invention and allows thus to achieve cheap movements.
  • the movement described here is of the type with second in the center but can obviously adapt the structure according to the invention to a movement without second in the center, where the second mobile is simply replaced by a central tenon.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Claims (8)

  1. Uhrwerk für Zeitmessgerät, das eine Platine (9), eine Anzeigevorrichtung mit Zeigern und einen Getriebezug, der Antriebsmittel (1, 7, 11, 12) mit den Zeigern verbindet, umfasst, wobei der Zug ein Antriebsrad (15), das zumindest indirekt mit den Antriebsmitteln in Eingriff und mit einem Trieb (7) einstückig ausgebildet ist, der an einem Zapfen (18) schwenkt, der in einer Räderwerkbrücke (8) angebracht ist, und ein Hülsenrad (1), das um den Trieb (7) angeordnet ist, umfasst, wobei sich das Antriebsrad (15) und das Hülsenrad (1) beiderseits der Platine (9) erstrecken, dadurch gekennzeichnet, dass das Hülsenrad (1) an der Platine (9) schwenkbar ist und dass das Hülsenrad (1) und der Trieb (7) jeweilige komplementäre Mittel (6, 22) umfassen, um das Hülsenrad (1) an dem Trieb (7) axial zu halten, wobei das Hülsenrad (1) in Bezug auf den Trieb (7) frei drehbar ist.
  2. Uhrwerk für Zeitmessgerät nach Anspruch 1, dadurch gekennzeichnet, dass die Haltemittel (6, 22) vom Rastentyp sind.
  3. Uhrwerk für Zeitmessgerät nach Anspruch 2, dadurch gekennzeichnet, dass die Haltemittel einen Wulst (6) und eine Kehle (22), die ringförmig und komplementär sind, umfassen, wovon eines an dem Trieb (7) und das andere an dem Hülsenrad (1) ausgebildet ist.
  4. Uhrwerk für Zeitmessgerät nach Anspruch 3, dadurch gekennzeichnet, dass der Wulst (6) und die Kehle (22) am Hülsenrad (1) bzw. am Trieb (7) ausgebildet sind.
  5. Uhrwerk für Zeitmessgerät nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass der ringförmige Wulst (6) durch eine erhöhte Materialdicke des Hülsenrades (1) gebildet ist.
  6. Uhrwerk für Zeitmessgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Platine (9) eine ringförmige Schulter (23) aufweist, die als radiale Führung des Hülsenrades (1) dient.
  7. Uhrwerk für Zeitmessgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Hülsenrad (1) aus Kunststoff verwirklicht ist.
  8. Uhrwerk für Zeitmessgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es außerdem einen Sekundenantrieb (11) umfasst und dass der Zapfen die Welle (18) des Sekundenantriebs (11) ist.
EP20010201246 2001-04-03 2001-04-03 Uhrwerk Expired - Lifetime EP1248164B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2001612036 DE60112036T2 (de) 2001-04-03 2001-04-03 Uhrwerk
EP20010201246 EP1248164B1 (de) 2001-04-03 2001-04-03 Uhrwerk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20010201246 EP1248164B1 (de) 2001-04-03 2001-04-03 Uhrwerk

Publications (2)

Publication Number Publication Date
EP1248164A1 EP1248164A1 (de) 2002-10-09
EP1248164B1 true EP1248164B1 (de) 2005-07-20

Family

ID=8180103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010201246 Expired - Lifetime EP1248164B1 (de) 2001-04-03 2001-04-03 Uhrwerk

Country Status (2)

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EP (1) EP1248164B1 (de)
DE (1) DE60112036T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170117329A (ko) * 2015-12-21 2017-10-23 에타 쏘시에떼 아노님 마누팍투레 홀로게레 스위세 시계용 모터 그룹

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209803564U (zh) * 2018-11-10 2019-12-17 福州小神龙表业技术研发有限公司 一种钟表分轮结构
EP3896533A1 (de) * 2020-04-17 2021-10-20 Patek Philippe SA Genève Zeigerrohr einer uhr

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH212585A (fr) * 1940-03-28 1940-11-30 Longines Montres Comp D Mécanisme de montre chronographe.
SU1226392A1 (ru) * 1978-08-11 1986-04-23 Научно-исследовательский институт часовой промышленности Редуктор электронно-механических наружных часов с шаговым двигателем
JPH0328396Y2 (de) * 1985-01-29 1991-06-18
US5155712A (en) * 1992-04-20 1992-10-13 Timex Corporation Wheel and pinion assembly with friction drive/slip coupling for a timepiece

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170117329A (ko) * 2015-12-21 2017-10-23 에타 쏘시에떼 아노님 마누팍투레 홀로게레 스위세 시계용 모터 그룹
KR101946147B1 (ko) 2015-12-21 2019-02-08 에타 쏘시에떼 아노님 마누팍투레 홀로게레 스위세 시계용 모터 그룹

Also Published As

Publication number Publication date
EP1248164A1 (de) 2002-10-09
DE60112036T2 (de) 2006-06-01
DE60112036D1 (de) 2005-08-25

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