EP3387493A1 - Timepiece movement - Google Patents
Timepiece movementInfo
- Publication number
- EP3387493A1 EP3387493A1 EP16810076.6A EP16810076A EP3387493A1 EP 3387493 A1 EP3387493 A1 EP 3387493A1 EP 16810076 A EP16810076 A EP 16810076A EP 3387493 A1 EP3387493 A1 EP 3387493A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pivot
- bearing
- shaft
- movement according
- barrel
- 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- Withdrawn
Links
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- G04B31/004—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor characterised by the material used
- G04B31/008—Jewel bearings
- G04B31/0087—Jewel bearings with jewel hole only
-
- 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
- G04B1/00—Driving mechanisms
- G04B1/10—Driving mechanisms with mainspring
- G04B1/12—Driving mechanisms with mainspring with several mainsprings
-
- 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 watch movement comprising two rotating components around a common axis.
- each piece used comprises a shaft provided at both ends of pivots, each engaged in a bearing.
- the pivot members formed of a bearing and a pivot are traditionally used to ensure axial and radial positioning of the rotating parts present in the movements.
- FR1033071 proposes a stone having a circular section hole and a steel pivot, having at its surface facing the stone, a polygonal section, so as to reduce the contact surfaces between the pivot and the stone.
- WO20091 15519 discloses a pivot member for rotating a workpiece of a watch movement about an axis of rotation, comprising a pivot and a bearing receiving said pivot.
- the contact surfaces of the two elements against each other are made of a material having a low coefficient of friction and a low wear rate.
- the object of the present invention is to propose another arrangement for coupling two watch components in a coaxial manner by means of easily manufactured and easily machinable pivoting members.
- the present invention also makes it possible to avoid hardening of the material caused by contact between a pivot and a bearing.
- a watch movement comprises two rotary watch components around a common axis, namely a first watch component fixed to a shaft comprising at at least one of its ends a pivot and a second watch component comprising a receiving bearing said pivot.
- the pivot and the bearing have the shape of a regular rounded polygon of three to six sides, preferably a rounded equilateral triangle, male or female respectively, arranged so that the pivot engages the bearing with angular clearance for transmitting a rotation of the shaft to the second component by a self-locking effect.
- the rounded triangular shape of the pivot and the bearing respectively has a diameter D1, D1 'of a virtual registered circle tangent to the three sides of the triangle and respectively a diameter D2, D2' of a virtual circumscribed circle. passing through the three vertices, where the ratio D1 / D2 or D1 7D2 'is between 0.5 and 0.95.
- the rounded triangular shape of the bearing has a diameter D2 'of a virtual circumscribed circle passing through the three vertices of the triangle of the bearing and the rounded triangular shape of the pivot has a diameter D2 of a circumscribed circle. virtual passing through the three vertices of the triangle of the pivot, where the ratio D27D2 is between 0.7 and 0.99.
- a contact surface S made between the pivot and the bearing when the pivot is inserted into the bearing and moved angularly to ensure a self-locking effect, extends over a length of between 1 / 10 and 9/10 of the total length of one side of the rounded polygon of the pivot.
- the difference in diameter between D2 and D2 'and the shape of the bearing and the pivot allow that the insertion of the pivot in the bearing is self-centering, allowing by an angular displacement a self-locking effect, the extraction of the pivot of the bearing angular displacement opposite the angular displacement for self-locking.
- FIG. 1 shows a perspective view of a bearing and a pivot, rounded equilateral triangular shape
- FIG. 2 shows a bottom view of a pivot inserted in a bearing, the pivot and the bearing being rounded triangular equilateral shape
- FIG. 3 shows a bottom view of the pivot and the bearing of Figure 2, the pivot having been moved angularly in a clockwise direction;
- - Figure 4 shows a bottom view of a pivot or a triangular equilateral triangular bearing rounded;
- FIG. 5 shows a perspective view of a coaxial coupling of two barrels, a pivot and a triangular equilateral triangular bearing ensuring the connection between the two barrels;
- FIG. 6 shows a sectional view of two barrels coaxially coupled.
- a coaxial coupling of two rotary clock components around a common axis is made from a first clock component (partially illustrated) attached to a shaft 30 having at one of its ends a pivot 1 and a second clock component 20 (partially illustrated) having a bearing 2 receiving said pivot 1.
- the pivot 1 and the bearing 2 have the shape of a rounded equilateral triangle male or female respectively and are arranged so that the pivot 1 engages in the bearing 2 with an angular play to transmit a rotation of the shaft 30 to the second component 20 by a self-locking effect.
- the pivot 1 comprises a bearing surface 3 rubbing against a face 4 of the watch component 20.
- the pivot 1 is inserted into the bearing 2, the pivot 1 and the bearing 2 being of rounded triangular shape.
- the rounded triangular shape of the bearing 2 has a diameter D2 of a virtual circumscribed circle 6 passing through the three vertices of the triangle of the bearing 2 and the rounded triangular shape of the pivot 1 has a diameter D2 'of a virtual circumscribed circle 10 passing through the three vertices of the triangle of the pivot (1).
- the difference between the diameters D2 'and D2 is small and the ratio D27D2 is 0.93.
- the pivot 1 of rounded triangular male form fits into the rounded triangular female shape of the bearing 2 and after angular displacement the pivot 1 and the bearing 2 are connected in rotation about the same axis .
- the insertion of the pivot 1 in the bearing 2 is self-centering, allowing by this angular displacement a self-locking effect.
- the extraction of the pivot 1 of the bearing 2 is by angular displacement opposite to the angular displacement for the self-locking.
- the rounded triangular shape of the pivot 1 and the bearing 2 has a diameter D 1 of a virtual inscribed circle 6 tangential to the three sides of the triangle and a diameter D 2 of a virtual circumscribed circle 5 passing through the three highs.
- the ratio D1 / D2 is, in this example, about 0.83.
- the difference between the diameters, outside D2 and inside D1 is small and allows for example to have a rigid axis and to be able to hollow out the center of the tree.
- the pivot 1 can be hollowed out so as to be traversed by a shaft with a larger diameter than if the pivot had a square shape.
- Figures 5 and 6 show an arrangement for coupling two barrels 7, 8 in series coaxially.
- the two barrels 7, 8 are rotatable about a common axis connected in series, namely a first barrel 8 fixed to a shaft 9 having at one of its ends said bearing 2 and a second barrel 7 comprising said pivot 1 receiving said bearing 2 .
- FIG. 6 shows a sectional view of a coaxial coupling of two barrels 7, 8 in series.
- Each of the barrels 7, 8 comprises a barrel 13, 14 each serving as housing a spring 17 and pivoting to a barrel shaft for fixing the springs 17 by a hook on a bung.
- a first barrel shaft 8 is rotated by an outer wheel 12, the first barrel shaft 9 rotating a drum 13 of barrel 8.
- the barrel 13 of barrel 8 has a bearing 2 in which is embedded a pivot 1 made in a second shaft 1 1 cylinder 7.
- the first shaft 9 of barrel 8 freely rotates in the second shaft 1 1 cylinder 7.
- the spring 17, via a hook of the barrel shaft 9 rotates the drum 13 of the barrel 8.
- the drum 13 of barrel 8 comprises the bearing 2 ( Figure 5) in which is embedded a pivot 1 formed in the shaft 1 January barrel 7. This recess allows to couple the two barrels 7, 8 without additional room.
- the shaft 1 1 of barrel 7 rotates freely around the barrel shaft 9 and drives the spring 15 which rotates the drum 14 of barrel 7.
- a ring gear 16, integral with the drum 14 of the barrel 7, transmits the energy to the movement of the watch.
- the preferred geometric shape of the pivot 1 and the bearing 2 is triangular, but in undescribed variants, this geometric shape may be polygonal, for example pentagonal.
- This coaxial coupling of two watch components makes it possible to save space in a movement, be it a wristwatch, a pocket watch or a table clock.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sliding-Contact Bearings (AREA)
- Pivots And Pivotal Connections (AREA)
- Electromechanical Clocks (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH01809/15A CH711870B1 (en) | 2015-12-10 | 2015-12-10 | Watch movement. |
PCT/IB2016/057410 WO2017098418A1 (en) | 2015-12-10 | 2016-12-07 | Timepiece movement |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3387493A1 true EP3387493A1 (en) | 2018-10-17 |
Family
ID=59012737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16810076.6A Withdrawn EP3387493A1 (en) | 2015-12-10 | 2016-12-07 | Timepiece movement |
Country Status (7)
Country | Link |
---|---|
US (1) | US20190004479A1 (en) |
EP (1) | EP3387493A1 (en) |
JP (1) | JP2018537696A (en) |
CN (1) | CN108475038A (en) |
CH (1) | CH711870B1 (en) |
RU (1) | RU2018123478A (en) |
WO (1) | WO2017098418A1 (en) |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US410327A (en) * | 1889-09-03 | meylan | ||
FR1033071A (en) | 1951-02-23 | 1953-07-08 | Improvements to the pivots of certain watch movements or similar devices | |
CH324249A (en) * | 1955-10-27 | 1957-09-15 | Longines Montres Comp D | Timepiece with motor barrel |
CH609516GA3 (en) * | 1976-02-19 | 1979-03-15 | Ebauches Electroniques Sa | WATCH PART. |
CH693516A5 (en) * | 1998-12-17 | 2003-09-15 | Exidel S A | Spring drive system for mechanical watch includes two barrels mounted on common axis to extend operating time before winding |
DE602004016282D1 (en) * | 2004-04-01 | 2008-10-16 | Richemont Int Sa | Movement with several barrels |
EP1826634A1 (en) * | 2006-02-28 | 2007-08-29 | Nivarox-FAR S.A. | Micromechanical element provided with form-locking opening for axle assembly |
EP1986059A1 (en) * | 2007-04-26 | 2008-10-29 | ETA SA Manufacture Horlogère Suisse | Pivoting device for an arbor inside a timepiece |
CH704640B1 (en) | 2008-03-18 | 2012-09-28 | Complitime Sa | pivot member. |
JP2012117842A (en) * | 2010-11-29 | 2012-06-21 | Seiko Instruments Inc | Bearing structure for timepiece, movement therefor, and timepiece |
EP2605080B1 (en) * | 2011-12-16 | 2014-09-10 | ETA SA Manufacture Horlogère Suisse | Overmoulded timepiece wheel |
CH706641A2 (en) * | 2012-06-22 | 2013-12-31 | Cartier Creation Studio Sa | Body engine for clockwork. |
EP2746868B1 (en) * | 2012-12-18 | 2016-04-27 | ETA SA Manufacture Horlogère Suisse | Clock barrel |
EP2746867B1 (en) * | 2012-12-18 | 2015-12-16 | ETA SA Manufacture Horlogère Suisse | Timepiece barrel |
CN204009386U (en) * | 2014-01-10 | 2014-12-10 | Eta瑞士钟表制造股份有限公司 | Watch and clock movement and the clock and watch that comprise this watch and clock movement |
EP3270235B1 (en) * | 2015-03-11 | 2020-01-29 | Citizen Watch Co., Ltd. | Gear device of a timepiece and method of manufacturing thereof |
EP3182211A1 (en) * | 2015-12-17 | 2017-06-21 | Nivarox-FAR S.A. | Composite part with resilient means under stress |
-
2015
- 2015-12-10 CH CH01809/15A patent/CH711870B1/en not_active IP Right Cessation
-
2016
- 2016-12-07 JP JP2018549637A patent/JP2018537696A/en active Pending
- 2016-12-07 US US16/060,578 patent/US20190004479A1/en not_active Abandoned
- 2016-12-07 CN CN201680079185.7A patent/CN108475038A/en active Pending
- 2016-12-07 WO PCT/IB2016/057410 patent/WO2017098418A1/en active Application Filing
- 2016-12-07 RU RU2018123478A patent/RU2018123478A/en not_active Application Discontinuation
- 2016-12-07 EP EP16810076.6A patent/EP3387493A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
JP2018537696A (en) | 2018-12-20 |
CN108475038A (en) | 2018-08-31 |
CH711870B1 (en) | 2019-08-30 |
US20190004479A1 (en) | 2019-01-03 |
CH711870A1 (en) | 2017-06-15 |
WO2017098418A1 (en) | 2017-06-15 |
RU2018123478A (en) | 2020-01-10 |
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Legal Events
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DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
RIC1 | Information provided on ipc code assigned before grant |
Ipc: G04B 27/04 20060101ALI20190726BHEP Ipc: G04B 31/00 20060101AFI20190726BHEP Ipc: G04B 1/12 20060101ALI20190726BHEP |
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Effective date: 20190930 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20200211 |