WO2007060152A2 - Marteau pour piece d'horlogerie - Google Patents
Marteau pour piece d'horlogerie Download PDFInfo
- Publication number
- WO2007060152A2 WO2007060152A2 PCT/EP2006/068694 EP2006068694W WO2007060152A2 WO 2007060152 A2 WO2007060152 A2 WO 2007060152A2 EP 2006068694 W EP2006068694 W EP 2006068694W WO 2007060152 A2 WO2007060152 A2 WO 2007060152A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hammer
- lever
- parts
- movement
- reset
- Prior art date
Links
- 230000000295 complement effect Effects 0.000 claims description 7
- 230000006870 function Effects 0.000 description 9
- 210000000056 organ Anatomy 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 210000002105 tongue Anatomy 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 241000219470 Mirabilis Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
- G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
- G04F7/08—Watches or clocks with stop devices, e.g. chronograph
- G04F7/0804—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms
- G04F7/0814—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms with double hammer, i.e. one hammer acts on two counters
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
- G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
- G04F7/08—Watches or clocks with stop devices, e.g. chronograph
Definitions
- the present invention relates to a watch movement hammer for cooperating with at least a first and second cores of the movement having respective axes of rotation located at a distance from one another.
- the hammer comprises in particular at least two parts, a first is intended to be mounted on the movement so as to be movable relative to the latter.
- the second part comprises at least two bearing surfaces intended to cooperate respectively with the first and second cores.
- the first and second parts of the hammer are bonded to each other so as to allow limited movement of one part relative to the other.
- this type of hammer is used in chronograph movements to reset the indicating organs of the measured times.
- the first part of the hammer is held on the platen of the movement by a span screw allowing the hammer to rotate to fulfill its reset function.
- the chronograph movement comprises in principle one or more hearts, integral with chronograph mobiles bearing themselves measured time indicating organs. These cores are intended to be struck by the hammer launched in a rotational or translational movement, under the pressure of a spring, in response to the activation of an external reset control member.
- the hammer comprises bearing surfaces intended to come into contact with the periphery of the corresponding cores to drive them in rotation, and then maintain them in a predefined position when the time indication members measured are returned to their positions. respective initials. It is essential that these support surfaces are arranged precisely with respect to each other, on the one hand, and each relative to the corresponding heart, on the other hand, so that the indication organs resume their initial positions with good accuracy and simultaneously. To achieve this result, it is sometimes necessary to adjust or retouch the hammer.
- US Patent 3,643,422 (EBAUCHES BETTLACH SA) describes a chronograph movement comprising a reset hammer made in two main parts, connected to each other so as to allow a limited movement of the one of the parts in relation to the other.
- a first part of this hammer, the body is rotatably mounted on the plate of the movement, while the second part, the lever, has two bosses intended to cooperate with two hearts of the movement.
- each of these tabs has a recessed rim, the two edges making the hammer lever integral with the body.
- US Patent 3,796,041 also discloses a chronograph movement comprising a two-part reset hammer.
- a first part is pivotally mounted on the plate being operable by a lever controlled from an external control member.
- This first part carries the second part, through a pin around which the two parts are free to rotate relative to each other.
- an additional pin secured to the second portion and engaged in a hole in the first portion, to limit the amplitude of the relative rotations between the two parts while providing a clearance between them.
- the described structure however has a substantial size in its thickness because the two parts must be at least partially superimposed to allow their connection. In addition, this congestion occurs in the immediate vicinity of the bearing surfaces intended to cooperate with the reset cores, which gives rise to constraints for the manufacturer in the arrangement of chronograph counters.
- the present invention has the main purpose of simplifying the known structures of the prior art. Additional objects of the present invention are to improve the reliability of devices of the prior art and, in particular, to improve the behavior over time and use.
- the present invention relates to a reset hammer of the type mentioned above, characterized in that at least one member of the first part of the hammer is connected to an organ of the second part.
- hammer by a connection of the ball joint type formed, on the one hand, by a protuberance having a disk-shaped main portion and formed on one of the hammer parts and, on the other hand, by a clearance formed in the other part of the hammer and of a shape substantially complementary to that of the protuberance.
- a ball-type connection advantageously allows the second part of the hammer to rotate to some extent with respect to the first part, so as to promote a simultaneous reset of all cores.
- the specific structure of a ball advantageously performs a function of retaining the second part of the hammer in contact with the first part.
- the ball is arranged between the bearing surfaces of the second part of the hammer in the longitudinal direction of the latter.
- a first of the bearing surfaces is formed at a first end of the second part of the hammer, while its second end is engaged inside a release of complementary shape provided in the first part of the hammer. This last connection makes it possible to further improve the stability of the mechanical connection formed between the first and second parts of the hammer.
- FIG. 1 shows a simplified elevational view of the reset members for chronograph movement according to a preferred embodiment of the present invention, the reset hammer being shown in its rest position;
- FIG. 1 represents a simplified elevational view of a chronograph movement comprising a reset hammer 1 according to a preferred embodiment of the present invention. Only the elements of the chronograph movement essential to the proper understanding of the invention have been represented.
- the position of some components is sometimes defined with reference to one hour. This position corresponds to the position of the index displaying the given time on a conventional dial.
- the reset lever 3 is arranged to be actuated by an external control member (not shown), shown schematically by an axis line bearing the reference R in the figures. More specifically, the lever 3 has a pivot-type connection with the plate 2 and is rotated relative to the plate 2 in response to a pressure exerted on the external control member.
- the pivot-type connection is provided by an axis or pin 4 which can be driven into a hole (not shown) of the plate, of corresponding dimensions.
- the position of a member or time setting rod (not shown) has also been schematized by a center line bearing the reference T.
- the R axis is positioned at four o'clock while the T-axis is positioned at three o'clock.
- a lever 5 of the reset hammer 1 is mounted integral with the reset lever 3, by its base 6, so as to be moved in response to an action on the external control device reset. .
- the nature of the movement of the hammer lever 5 is not directly related to the present invention and can be of any type suitable for the implementation of the latter.
- the lever 5 is pivotally arranged with respect to the turntable 2 of the watch movement, as is the reset lever 3.
- the base 6 of the hammer lever 5 has an opening 7 inside which the tenon 4 is arranged, which thus constitutes an axis of rotation also for the hammer 1.
- the two levers 3 and 5 can be made integral by any suitable means to ensure the transmission of a rotation of the reset lever 3 to the hammer lever 5 without departing from the scope of the present invention.
- the base 6 of the lever 5 it is possible for the base 6 of the lever 5 to be welded to the face of the resetting lever 3 against which it rests, or alternatively that the reset lever 3 and the hammer 1 are formed in one piece. .
- the two levers 3 and 5 can also be made in the form of two independent parts of each other and arranged so as to pivot about the pin 4. It is then possible to provide a member of the resetting device. arranged to act simultaneously on the two levers in response to an activation of the external control member and cause their simultaneous rotation.
- the reset lever 3 is provided with a pin 8 driven into a hole (not referenced) formed in the region of the lever 3 located in superposition relative to the base 6 of the lever 5.
- the base 6 also comprises a hole adapted to accommodate the pin 8 and thus make the hammer lever 5 integral with the lever 3 to reset during the rotational movements.
- the reset lever 3 has an additional pin 9 in its remote portion of the pin 4 intended to serve as a support for the end of a spring (not shown) exerting on the lever 3 a force, schematized by an arrow referenced by F, tending to maintain it in its rest position, that is to say in the position shown in FIG. 1.
- a notch is conventionally provided on the spring to allow rapid action of the reset control.
- the hammer lever 5 extends in a first step from its base 6 in a direction substantially perpendicular to the longitudinal direction of the reset lever 3, in other words in the direction of the center line R.
- the lever 5 then has a division, in its longitudinal direction, between a main portion 10 which extends longitudinally by marking a bend and a secondary portion forming a projection 11 on the periphery of the hammer lever 5 oriented towards the center of the watch movement. .
- the junction between the main portion 10 and the projection 11 defines a clearance 12 shaped substantially in an arc. The association of the main portion 10, the projection 11 and the clearance 12 forms a lip whose function will be explained later.
- the main portion 10 ends with a thin end 13 rounded near which is formed a protrusion 14 oriented towards the center of the watch movement.
- the protuberance 14 has a first substantially rectilinear portion 15 followed by a second portion 16 in the general shape of a disc of diameter greater than the width of the first portion 15.
- the hammer 1 comprises a second main part 17 partially fitted in the first part, that is to say in the hammer lever 5.
- the second portion 17 of the hammer 1 carries bearing surfaces 18 and 19, two in number in the embodiment shown in the figures in a non-limiting manner, intended to be moved in contact with cores 20 and 21 during the reset operation of the chronograph counters.
- the second portion 17 of the hammer has a generally elongated shape and comprises a first end 22 shaped in language whose dimensions substantially correspond to the dimensions of the lip defined by the main portion 10 and the projection 11 of the hammer lever 5. From the end 22 and in the longitudinal direction of the second part 17 of the hammer, there is a first flat bearing surface 18 and whose normal is oriented on the side of the center of the watch movement, the surface d support 18 being arranged at the end of a first arm 23 short. Further in the same direction, the second portion 17 of the hammer widens and has a clearance 24 open on the periphery side of the movement and generally circular in shape, a narrowing 25 being provided in the region of the opening. The diameter of the clearance 24 is very slightly greater than the diameter of the protuberance 14 of the hammer lever 5. Likewise, the width of the narrowing 25 is very slightly greater than that of the first portion of the protuberance.
- the second portion 17 of the hammer 1 then has a reduced width relative to that of the region of the clearance 24 to end in a second arm 26 of the hammer carrying the second flat bearing surface 19, whose normal is also oriented towards the center of the watch movement.
- the cores 20 and 21 have been shown schematically in that they are conventional and do not present any particular difficulty for the skilled person.
- Each of the hearts is mounted on a chronograph counter wheel (not shown for clarity) carrying an indication hand of a timed unit of time.
- a pointer 27 indicating the second timed and a pointer 28 of the timed minute have been shown schematically in the figures.
- the needles 27 and 28 have been represented in any respective positions in FIG. 1, which corresponds to a situation of activity of the chronograph function, the hammer 1 being raised to allow the rotation of the cores 20, 21 of the chronograph mobiles relative to their respective axes of rotation 29 and 30.
- the mobile second timed is commonly placed at the center of the watch movement, the indication of the second time being achieved by a large second hand centered on the dial of the chronograph.
- the axis of rotation 29 intersects the watch movement at its center.
- the maintenance of the reset lever 3 and the hammer 1, in a direction parallel to that of its axis of rotation can be carried out in various ways without departing from the scope of the present invention.
- it can be provided as a guide that a plate (not shown) covering the base 6 of the hammer and the reset lever 3 is screwed into the plate to ensure axial retention.
- the pin 9 of the reset lever 3 has a length such that it is flush with the surface of the wafer located on the side of the plate to contribute to the stability of the lever 3.
- the movement The watchmaker may also be arranged so that the hammer is inserted at least partially between regions of the barrel bridge, on the one hand, and regions of the chronograph bridge, on the other hand. Therefore, the hammer 1 is free to move within a plane coincident with its median plane.
- the first contact is established with a curved portion 31, 32 of the periphery of each of the cores to the extent that none of the time counters timed is at zero.
- the pressure of the hammer undergone by each of the cores causes its rotation until each bearing surface is in contact with a clearance 33, 34 of the periphery of the corresponding core.
- the bearing surfaces 18 and 19 do not necessarily come into contact with the corresponding heart simultaneously.
- the structure of the hammer 1 according to the present invention advantageously allows the second part 17 of the hammer to pivot relative to the hammer lever 5, at the level of the ball-type connection defined above. In addition, such a rotation is possible because of the small clearance formed between the tongue 22 of the second hammer portion 17, on the one hand, and the lip formed around the clearance 12 of the lever 5, on the other hand.
- the bearing surface which has a delay in establishing contact with the hearts is driven in a rotational movement to bring it closer to the corresponding heart.
- the rotational movement of the second part of the hammer causes a decrease in the pressure exerted by the bearing surface in advance on the corresponding core, while decreasing slightly the speed of rotation.
- the second portion 17 of the hammer pivots in reverse to allow a rebalancing of the pressures respectively applied by the first and by the second bearing surface on the cores 20 and 21.
- the amplitudes of the rotation of the latter are defined directly by the relative dimensions of the first portion 15 of the protuberance 14 and the narrowing 25 of the second hammer part.
- the edges of the clearance 24 thus define stops to limit the rotational movements of the first portion 15 of the protuberance.
- the respective regions 35 and 36 of the lever 5 and the second part 17 of the hammer located between the ball and the lip have complementary shapes.
- the respective dimensions of the components of the ball are adjusted so that a small clearance is provided between the regions 35 and 36.
- the skilled person can define the value of this game, without departing from the scope of the present invention and alternatively or complementary to the solution of the preceding paragraph, so that the region 35 at least partially fulfills the function of a stop for the region 36 during the rotational movements of the second portion 17 relative to the lever 5 of the hammer.
- the structure of the hammer according to the present invention has, in addition to great simplicity, a reduced size including close to the bearing surface 19 furthest from the axis of rotation 4.
- This characteristic is particularly advantageous in that this part of the hammer is located in the region of the center of the watch movement.
- a large size of the hammer in this region can be problematic for the manufacturer of watch movement that will take into account to have other components of the movement.
- the ball is arranged, by traversing the hammer along its longitudinal direction from the pin 4, either before the first bearing surface 18 or after the second surface 19.
- the respective shapes of the first and second parts of the hammer must be adapted accordingly during manufacture, without the person skilled in the art encountering of special difficulty.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Unknown Time Intervals (AREA)
- Pens And Brushes (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008541725A JP4901877B2 (ja) | 2005-11-24 | 2006-11-21 | タイムピースのリセットハンマー |
US12/094,780 US7553067B2 (en) | 2005-11-24 | 2006-11-21 | Timepiece Hammer |
CN200680043914XA CN101313258B (zh) | 2005-11-24 | 2006-11-21 | 钟表锤 |
EP06819642A EP1960848B1 (fr) | 2005-11-24 | 2006-11-21 | Marteau pour piece d'horlogerie |
HK09100112.4A HK1123105A1 (en) | 2005-11-24 | 2009-01-07 | Timepiece hammer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05111267A EP1791042A1 (fr) | 2005-11-24 | 2005-11-24 | Marteau pour pièce d'horlogerie |
EP05111267.0 | 2005-11-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2007060152A2 true WO2007060152A2 (fr) | 2007-05-31 |
WO2007060152A3 WO2007060152A3 (fr) | 2007-08-30 |
Family
ID=36973964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/068694 WO2007060152A2 (fr) | 2005-11-24 | 2006-11-21 | Marteau pour piece d'horlogerie |
Country Status (8)
Country | Link |
---|---|
US (1) | US7553067B2 (fr) |
EP (2) | EP1791042A1 (fr) |
JP (1) | JP4901877B2 (fr) |
KR (1) | KR20080072714A (fr) |
CN (1) | CN101313258B (fr) |
HK (1) | HK1123105A1 (fr) |
RU (1) | RU2402055C2 (fr) |
WO (1) | WO2007060152A2 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1791038A1 (fr) | 2005-11-24 | 2007-05-30 | Vaucher Manufacture Fleurier SA | Mouvement horloger |
CH708999A1 (fr) * | 2013-12-16 | 2015-06-30 | Société Anonyme De La Manufacture D Horlogerie Audemars Piguet & Cie | Dispositif de remise à zéro avec marteaux indépendants. |
EP4390574A1 (fr) | 2022-12-21 | 2024-06-26 | Blancpain SA | Mecanisme de chronographe pour mouvement d'horlogerie et piece d'horlogerie comportant un tel mecanisme |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3643422A (en) * | 1969-06-10 | 1972-02-22 | Ebauches Bettlach Sa | Chronograph movement |
US3796041A (en) * | 1971-08-20 | 1974-03-12 | Smiths Industries Ltd | Reset mechanisms |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US809196A (en) * | 1905-04-21 | 1906-01-02 | Albert C Loker | Stop-watch. |
US2641899A (en) * | 1950-07-31 | 1953-06-16 | Jeanneret & Co R | Chronograph setting hammer system |
DE1773368C3 (de) * | 1967-08-21 | 1974-07-11 | K.K. Daini Seikosha, Tokio | Nullstelleinrichtung für eine Stoppuhr |
CH500273A4 (fr) * | 1973-04-06 | 1975-05-30 | ||
JP3265232B2 (ja) * | 1997-07-07 | 2002-03-11 | セイコーインスツルメンツ株式会社 | クロノグラフ時計 |
JP4296019B2 (ja) * | 2003-03-27 | 2009-07-15 | セイコーインスツル株式会社 | 帰零構造を有するクロノグラフ時計 |
EP1746471B1 (fr) * | 2005-07-20 | 2019-09-18 | Breitling AG | Dispositif de remise à zéro de deux compteurs de temps |
-
2005
- 2005-11-24 EP EP05111267A patent/EP1791042A1/fr not_active Withdrawn
-
2006
- 2006-11-21 US US12/094,780 patent/US7553067B2/en not_active Expired - Fee Related
- 2006-11-21 WO PCT/EP2006/068694 patent/WO2007060152A2/fr active Application Filing
- 2006-11-21 KR KR1020087014145A patent/KR20080072714A/ko not_active Withdrawn
- 2006-11-21 RU RU2008125428/28A patent/RU2402055C2/ru not_active IP Right Cessation
- 2006-11-21 CN CN200680043914XA patent/CN101313258B/zh not_active Expired - Fee Related
- 2006-11-21 JP JP2008541725A patent/JP4901877B2/ja not_active Expired - Fee Related
- 2006-11-21 EP EP06819642A patent/EP1960848B1/fr active Active
-
2009
- 2009-01-07 HK HK09100112.4A patent/HK1123105A1/xx not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3643422A (en) * | 1969-06-10 | 1972-02-22 | Ebauches Bettlach Sa | Chronograph movement |
US3796041A (en) * | 1971-08-20 | 1974-03-12 | Smiths Industries Ltd | Reset mechanisms |
Also Published As
Publication number | Publication date |
---|---|
EP1960848B1 (fr) | 2012-06-13 |
WO2007060152A3 (fr) | 2007-08-30 |
CN101313258A (zh) | 2008-11-26 |
CN101313258B (zh) | 2010-11-03 |
RU2402055C2 (ru) | 2010-10-20 |
US7553067B2 (en) | 2009-06-30 |
EP1960848A2 (fr) | 2008-08-27 |
RU2008125428A (ru) | 2009-12-27 |
US20080291785A1 (en) | 2008-11-27 |
KR20080072714A (ko) | 2008-08-06 |
JP2009517645A (ja) | 2009-04-30 |
EP1791042A1 (fr) | 2007-05-30 |
JP4901877B2 (ja) | 2012-03-21 |
HK1123105A1 (en) | 2009-06-05 |
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