EP1668430A1 - Roue d'echappement - Google Patents
Roue d'echappementInfo
- Publication number
- EP1668430A1 EP1668430A1 EP04761902A EP04761902A EP1668430A1 EP 1668430 A1 EP1668430 A1 EP 1668430A1 EP 04761902 A EP04761902 A EP 04761902A EP 04761902 A EP04761902 A EP 04761902A EP 1668430 A1 EP1668430 A1 EP 1668430A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wheel
- thickness
- finger
- threshold
- wheel according
- 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.)
- Granted
Links
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 239000000314 lubricant Substances 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 210000003323 beak Anatomy 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005323 electroforming Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003892 spreading Methods 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
- G04B15/00—Escapements
- G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/15—Intermittent grip type mechanical movement
- Y10T74/1502—Escapement
Definitions
- the present invention relates to the field of mechanical watchmaking. It relates, more particularly, to a wheel of an exhaust mechanism of the type receiving energy from a mainspring and driving a balance by means of an anchor provided with pallets.
- the escape wheel is provided with teeth arranged to cooperate with the pallets of the anchor.
- the lubrication problem is particularly difficult to solve.
- the oil used must be stable, in particular resist oxidation and temperature variations and, above all, remain in the contact area without spilling on the wheel. Indeed, the forces involved being very low, it is necessary for the oil to be fluid. However, the shocks during the pulses are significant. There is therefore a significant risk that the oil will disperse and spill on the wheel, or even into the gears, which is very harmful.
- FIGS. 1a and 1b One of the solutions usually used to solve this problem is presented in FIGS. 1a and 1b.
- the teeth 6 of the escape wheel terminate in a beveled plane 8 forming an obtuse angle with the plane of the wheel.
- the oil deposited on the plane 8 adheres to it and spreads out, thanks to surface tension phenomena, on the end 9 of the tooth which defines the zone of contact with the pallets of the anchor.
- the object of the present invention is to improve the distribution of the lubricant at the contact area of the escape wheel and the pallets of the anchor and, above all, to simplify the production of the wheel.
- the invention relates to an escape wheel, the direction of rotation of which defines an upstream direction and a downstream direction, intended to take place in an exhaust mechanism and formed of a hub, a twill mounted on the hub and teeth arranged radially on said twill, said teeth having a root terminated by a finger.
- the finger has a first part of thickness E located on the side of the twill and a second part, of thickness e less, located on the side of the end of the finger, the border between these two parts defining a threshold which forms an oil mill, with the face of the second part adjoining it.
- the thickness of the second part is substantially equal to half that of the first part.
- the distance between the threshold and the end of the tooth is substantially equal to the thickness of the wheel.
- the wheel also has one or the other of the following characteristics: - the wall of the oil tank formed by said threshold is concave, - the wall of the oil tank has continuity solutions, - the second part has a cavity formed in its thickness, and - the second part carries an appendage extending in the thickness of the wheel
- FIG. 2 shows an escape wheel 10 formed of a hub 12, of four arms 14 coplanar and of the same length and arranged orthogonally on the hub 12, of a twill 16 held by the arms 14 and of teeth 18, typically twenty in number, located at the periphery of the wheel, in line with serge 16.
- the dimensions of the wheel vary according to the size in which it is used.
- the escape wheel illustrated in FIG. 2 works by turning clockwise. This direction of rotation defines, for each tooth, an upstream side facing the advancement of the wheel and a downstream side.
- the teeth 18 have a triangular root 20 (FIG. 3a) the end of which is truncated and replaced by a finger 22 formed from a base 23 and a spout 24. More precisely, the spout 24 has, on the upstream side, a part 25 aligned with the edge of the base 23 and, on the downstream side, a bevel 26 extending by a straight part 28, parallel to the part 25.
- the finger 22 has a first part 22a located on the side of the rim 16 and of the same thickness as it, and a second part 22b, of lesser thickness, located on the side from the tip of the finger.
- the border between these two parts defines a threshold 22c.
- the thickness of part 22a is 0.15 mm, that of part 22b is 0.08mm.
- the second part 22b and the threshold 22c form a limited space ensuring an oiler function.
- the space intended to ensure the retention of the oil is well defined.
- the quantity of lubricant available can thus be increased without risk of contamination.
- this space retains the lubricant during the impact of the escape wheel against the pallet, at the end of the pulse.
- the threshold 22c forms a concave wall which connects, along a quarter-circle curve, a point A situated, downstream side, at the junction of the base 23 and the bevel 26, and a point B located upstream side of base 23.
- the threshold 22c is parallel to the end of the tooth 18 and passes through a point ⁇ _ located on the bevel 26.
- the threshold 22c connects a point D located on the upstream side on the base 23, and a point E located on the downstream side along a line substantially tangent to a circle passing through the center of the wheel.
- FIG. 6 shows a fourth variant in which the threshold 22c defines a concave space which connects a point F situated at the junction of the base 23 and the bevel 26, and a point G situated at the same distance from the end of the finger 22 than point F.
- FIG. 7 illustrates yet another variant of the invention.
- the threshold 22c connects a point H located at the junction of the bevel 26 and the straight part 28 which ends the beak 24, and a point i located at the same distance from the end of the finger 22 as the point - Between these two points , the threshold 22c forms three concave waves and divides the width of the finger 22 into three identical housings. The wall formed by the threshold 22c thus presents continuity solutions, which further improve the retention of the oil.
- the lubricant deposited on the lower part 22b of the finger 22 has a surface tension such that it can spread over the end of the spout 24, particularly on the zone of contact with the pallets of the anchor, while the height and the shape of the threshold 22c prevent it from spreading on the escapement wheel and in the movement of the watch.
- the lower part 22a and the threshold 22c thus form an oil container, an integral part of each of the teeth of the wheel 10.
- the portion of lower thickness 22b may also include a cavity or an appendage such as a tenon or a pin.
- a cavity or an appendage such as a tenon or a pin.
- Such an escape wheel can be manufactured in a particularly simple, reliable and precise manner, for example by electroforming.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Details Of Gearings (AREA)
- Gears, Cams (AREA)
- Mechanical Operated Clutches (AREA)
- Transmission Devices (AREA)
- Body Structure For Vehicles (AREA)
- Lock And Its Accessories (AREA)
- Saccharide Compounds (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04761902A EP1668430B1 (fr) | 2003-09-22 | 2004-09-08 | Roue d'echappement |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03405690A EP1517198A1 (fr) | 2003-09-22 | 2003-09-22 | Roue d'échappement |
EP04761902A EP1668430B1 (fr) | 2003-09-22 | 2004-09-08 | Roue d'echappement |
PCT/CH2004/000562 WO2005029203A1 (fr) | 2003-09-22 | 2004-09-08 | Roue d'echappement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1668430A1 true EP1668430A1 (fr) | 2006-06-14 |
EP1668430B1 EP1668430B1 (fr) | 2010-08-11 |
Family
ID=34178689
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03405690A Withdrawn EP1517198A1 (fr) | 2003-09-22 | 2003-09-22 | Roue d'échappement |
EP04761902A Expired - Lifetime EP1668430B1 (fr) | 2003-09-22 | 2004-09-08 | Roue d'echappement |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03405690A Withdrawn EP1517198A1 (fr) | 2003-09-22 | 2003-09-22 | Roue d'échappement |
Country Status (7)
Country | Link |
---|---|
US (1) | US20070251340A1 (fr) |
EP (2) | EP1517198A1 (fr) |
JP (1) | JP2007506073A (fr) |
CN (1) | CN1856749A (fr) |
AT (1) | ATE477519T1 (fr) |
DE (1) | DE602004028637D1 (fr) |
WO (1) | WO2005029203A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5389455B2 (ja) | 2008-02-21 | 2014-01-15 | セイコーインスツル株式会社 | 摺動部品及び時計 |
EP2450756B1 (fr) * | 2010-11-04 | 2015-01-07 | Nivarox-FAR S.A. | Dispositif anti-galop pour mécanisme d'échappement |
EP2887157B1 (fr) * | 2013-12-23 | 2018-02-07 | The Swatch Group Research and Development Ltd. | Echappement optimisé |
JP6355358B2 (ja) * | 2014-02-17 | 2018-07-11 | セイコーインスツル株式会社 | がんぎ車、ムーブメント、及び時計 |
JP6282884B2 (ja) * | 2014-02-17 | 2018-02-21 | セイコーインスツル株式会社 | がんぎ車、ムーブメント、及び時計 |
EP3547040B1 (fr) * | 2018-03-29 | 2021-03-10 | Rolex Sa | Roue pour mouvement horloger |
EP4113214A1 (fr) * | 2021-07-02 | 2023-01-04 | Nivarox-FAR S.A. | Roue d'échappement, outil pour la fabrication d'une roue d'échappement et procédé de fabrication d'une roue d'échappement |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR589309A (fr) | 1924-10-24 | 1925-05-27 | Perfectionnements à la fabrication des roues d'échappement à ancre pour mouvements d'horlogerie et spécialement pour montres | |
CH281799A (fr) | 1950-01-10 | 1952-03-31 | Rolex Montres | Roue d'échappement pour pièce d'horlogerie. |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US898479A (en) * | 1905-08-09 | 1908-09-15 | Paul Emmanuel Jeanmairet | Escapement-wheel. |
US1044054A (en) * | 1912-01-24 | 1912-11-12 | Paul E Jeanmairet | Escapement-wheel. |
FR919612A (fr) * | 1945-02-12 | 1947-03-13 | Roue d'échappement à ancre | |
US2722098A (en) * | 1952-01-31 | 1955-11-01 | Bornschein Ernst | Escapement for clockworks |
US2819584A (en) * | 1953-08-22 | 1958-01-14 | Marti Fritz | Lever escapement |
DE1192984B (de) * | 1961-11-09 | 1965-05-13 | Far Fab Assortiments Reunies | Fuer ein Uhrwerk bestimmtes Hemmungsrad |
CH1713666A4 (fr) * | 1966-11-28 | 1968-09-13 | Enicar S A | Echappement à ancre pour pièce d'horlogerie |
JPS5027128B1 (fr) * | 1970-03-23 | 1975-09-05 |
-
2003
- 2003-09-22 EP EP03405690A patent/EP1517198A1/fr not_active Withdrawn
-
2004
- 2004-09-08 JP JP2006526502A patent/JP2007506073A/ja not_active Abandoned
- 2004-09-08 DE DE602004028637T patent/DE602004028637D1/de not_active Expired - Lifetime
- 2004-09-08 CN CNA2004800273357A patent/CN1856749A/zh active Pending
- 2004-09-08 WO PCT/CH2004/000562 patent/WO2005029203A1/fr active Application Filing
- 2004-09-08 US US10/573,029 patent/US20070251340A1/en not_active Abandoned
- 2004-09-08 AT AT04761902T patent/ATE477519T1/de not_active IP Right Cessation
- 2004-09-08 EP EP04761902A patent/EP1668430B1/fr not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR589309A (fr) | 1924-10-24 | 1925-05-27 | Perfectionnements à la fabrication des roues d'échappement à ancre pour mouvements d'horlogerie et spécialement pour montres | |
CH281799A (fr) | 1950-01-10 | 1952-03-31 | Rolex Montres | Roue d'échappement pour pièce d'horlogerie. |
Also Published As
Publication number | Publication date |
---|---|
EP1517198A1 (fr) | 2005-03-23 |
CN1856749A (zh) | 2006-11-01 |
DE602004028637D1 (de) | 2010-09-23 |
JP2007506073A (ja) | 2007-03-15 |
EP1668430B1 (fr) | 2010-08-11 |
US20070251340A1 (en) | 2007-11-01 |
WO2005029203A1 (fr) | 2005-03-31 |
ATE477519T1 (de) | 2010-08-15 |
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