EP4307054A1 - Schlagwerkmechanismus - Google Patents

Schlagwerkmechanismus Download PDF

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Publication number
EP4307054A1
EP4307054A1 EP23158425.1A EP23158425A EP4307054A1 EP 4307054 A1 EP4307054 A1 EP 4307054A1 EP 23158425 A EP23158425 A EP 23158425A EP 4307054 A1 EP4307054 A1 EP 4307054A1
Authority
EP
European Patent Office
Prior art keywords
shaft
striking
minute
quarter
striking part
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.)
Pending
Application number
EP23158425.1A
Other languages
English (en)
French (fr)
Inventor
Jean-Marie Bouquin
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.)
Richemont International SA
Original Assignee
Richemont International SA
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 Richemont International SA filed Critical Richemont International SA
Publication of EP4307054A1 publication Critical patent/EP4307054A1/de
Pending 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
    • G04B21/00—Indicating the time by acoustic means
    • G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
    • G04B21/12—Reiterating watches or clocks
    • 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
    • G04B21/00—Indicating the time by acoustic means
    • G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
    • G04B21/04—Hour wheels; Racks or rakes; Snails or similar control mechanisms

Definitions

  • the present invention relates to the field of watchmaking. It relates more particularly to a striking mechanism of the minute repeater or grande sonnerie type. This type of mechanism allows, at the request of the user or in passing respectively, to produce a ringing giving information allowing the current time to be coded audibly, thanks to sensors which will “read” the time on cams, and hammers which strike gongs according to a number of strokes which identify the hours, quarters and minutes.
  • Chiming watches are among the most complex and difficult complications to make, particularly because of the large number of parts to make and assemble in a small space. Although known for a very long time, striking watches initially made it possible to know the time in the dark, the generalization of wrist watches implies a miniaturization of parts which means that striking watches are still very exclusive today. .
  • the document EP1429214 describes a traditional repetition mechanism.
  • a user activates a winding lever, by which he arms a striking barrel and simultaneously drives a feeler which reads the hour information on an hour cam.
  • An hour strike part is activated simultaneously and is positioned opposite a strike lift, with ratchet teeth to strike the hours. In doing so, the quarter and minute striking parts fall until their feeler rests on their respective cams, the striking parts also being provided with ratchet teeth to strike the quarters and minutes respectively.
  • the striking barrel armed when triggered, then drives the hour striking part, as well as a driving finger, which in turn drives the quarter striking part.
  • a locking system secures the quarter striker part and the minute striker part.
  • the striking pieces activate their respective hammers, a number of times corresponding to the number of teeth which, when the striking pieces fell, passed the hammer lifts, this number of teeth being defined by the position of the respective cams.
  • the present invention aims to propose a new ringing architecture, particularly compact and which also offers optimized torque transmissions between the different mobiles.
  • the striking mechanism further comprising, on the one hand, disengageable connection means between the quarter striking part and the minute striking part, capable of evolving between a disengaged state in which the quarter striking parts and minutes are free relative to each other, and an engaged state in which the striking parts of the quarters and minutes are united in rotation around said shaft, and on the other hand, a control member to pass the disengageable connection means from one state to another.
  • the proposed mechanism is thus particularly compact, and the striking parts receive the same torque, in an extremely direct manner, which promotes a regular, quality sound between the different parts.
  • the striking spring is arranged in a recess formed in an element of the frame on which said shaft is pivoted.
  • the hour striking piece advantageously comprises a projecting member located in the plane of the quarter striking piece.
  • This system provides an All Or None function, which ensures that the striking barrel is sufficiently armed to carry out a striking cycle.
  • the flange is integral with a movable bridge, pivoted freely on the shaft, positioned by adjustment means. This makes it possible to adjust the fall of the minute hook in the teeth attached to the minute part.
  • the adjustment means comprise an eccentric arranged in a fork with which the movable bridge is provided.
  • a ringing mechanism here of the repeater type, being complex, the description which follows, with reference to the figures, will present the different components in functional sub-assemblies, in order to simplify reading.
  • a trigger lever 10 pivoting on the movement frame (not shown) and accessible from outside the box by a user.
  • the trigger lever 10 is secured to a winding rack 102 engaged with a winding pinion 14.
  • the latter is mounted squarely on a shaft 16, which is the main pivot axis of the mechanism according to the invention.
  • the shaft 16 is connected to a striking spring (not visible in the drawing), housed directly in a recess made in an element of the frame, in this case a bridge 18 ( fig. 2 ). More precisely, one of the ends of the striking spring is fixed on the shaft, while the other is attached to the frame. The torque of the spring is thus applied to the shaft, which is rotated by the spring, when it is armed.
  • the shaft 16 also carries a first mobile 20, comprising a unidirectional connection obtained by a latching system, between a ratchet 201 secured to the shaft 16, with which cooperates a pawl spring 203, fixed on a board 205.
  • board 205 is connected to a regulator 22 by a striking gear 24, which is driven when the striking spring unwinds via the board 205 with which it meshes. Thanks to the unidirectional connection, the striking gear 24 is not driven when the striking spring is wound.
  • a 40 hour striking part (also called 40 hour part) equipped with a ratchet sector with twelve teeth, is arranged to cooperate with a hammer lift, not shown, making it possible to strike the hours.
  • the number of hours to strike will depend on the angular position of the 40 hour striking piece, when triggered. As can be seen on the Figure 3 , this is defined by an hour feeler 104.
  • This hour feeler 104 is pivotally mounted on the axis of the trigger lever 10. It includes a beak 106 which will read the information relating to the current time on an hour snail 42 with twelve steps , secured to an hour star 44.
  • the hour feeler 104 is connected to the trigger lever 10 by a pin 108, secured to the lever 10 and passing through an opening 110 in the form of a circular sector formed in the feeler 104 which allows play between these two rooms.
  • the hours feeler 104 also includes a finger 112, the role of which will appear below.
  • the trigger lever 10 also carries a cam 114 of particular shape and designated in certain works, by the name of bird or diabla, and which is part of a system known to those skilled in the art under the name Tout Ou nothing. It requires the user to fully operate the trigger lever for the full ringing to take place.
  • the cam 114 is screwed freely onto the lever 10 and includes a lift 116 on which a locking rocker 46 is held in support by an invisible spring. This presses the cam 114 against the finger 112 by a flank 118 which the cam 114 comprises.
  • the locking lever 46 is pivoted on the frame and comprises a lock 462, capable of cooperating with a hook 502 of a quarter striking part 50, which will be described in detail below.
  • a spring not shown tends to keep the lock 462 of the locking lever 46 engaged with the hook 502.
  • the trigger lever 10 when a user activates the trigger lever 10, it pivots until the beak 106 comes into contact with the hour snail 42.
  • the striking spring is thus armed and the hour striking part 40 takes an angular position which corresponds to the number of hours to strike.
  • the trigger lever 10 continues its travel, while the feeler 104 remains in position, which causes the rotation of the cam 114, which will pivot the locking rocker 46.
  • the quarter striking part 50 also called quarter part 50
  • It is freely pivoted on the shaft 16 and is subject to the action of a spring 51 ( fig. 4 ) which tends to rotate the quarter piece 50 clockwise, with reference to the figures 4 And 5 .
  • the spring 51 is advantageously of the spiral type, wound around the shaft 16, between the quarter part and the hour part.
  • the quarter part 50 has a series of teeth 504 intended to cooperate with the lifting of hammers to sound the quarters. In the example illustrated, it is a Riverside type strike, the teeth of the quarter piece are arranged on circular, concentric sectors at tree 16, located in different planes, four in this case, to cooperate with four lifts and play the so-called Riverside melody.
  • the quarter piece 50 Concentrically with the shaft 16, the quarter piece 50 has teeth 52, with which the rack 600 of a quarter feeler 60 meshes. This pivots on the frame and has a nozzle 602, arranged to cooperate with a quarter snail 65. It is the spring 51 which exerts a torque which tends to bring the feeler into contact with the snail.
  • the quarter piece 50 still includes the hook 502 mentioned above. It still has a 510 minute hook ( fig. 6 ), pivotally mounted on the quarter part, for example between two lugs 512 arranged on the parts which carry the teeth 504.
  • This minute hook 512 comprises two crampons 514 oriented in the direction of the shaft 16 and it is subjected to a spring which tends to bring said studs 514 closer to the shaft 16.
  • the hour piece 40 For driving the quarter piece 50 during a strike, the hour piece 40 includes a pin 402 ( fig. 4 ), fixed in the hour part 40.
  • the pin 402 or any other projecting member is located at least partially in the plane of the quarter part 50, which means that, during counterclockwise rotation of a watch (with reference to the figures) of the hour striking part 40, under the action of the striking spring which relaxes, the quarter part 50 is also driven in this same movement when the pin 402 comes press against the edge of the quarter piece 50.
  • the hour striking piece 10 and that of the quarters 50 are pivoted around the shaft 16, the transmission of torque between the pin 402 and the edge of the quarter piece takes place without slipping and therefore without loss of energy. The energy of the striking barrel is therefore transmitted almost without loss into the rakes.
  • the mechanism For the minute strike, the mechanism includes a 100 minute strike piece (also called a 100 minute strike piece). It is also freely pivoted on the shaft 16 and is subject to the action of its spring (not visible in the drawing) which tends to make it pivot clockwise, with reference to the figures 4 to 6 .
  • This spring is also, advantageously, of the spiral type, arranged between the minute part and a fixed element, in this case in connection with the shaft 16.
  • the minute part 100 has a series of fourteen teeth 1002 intended to cooperate with a raising of hammers to strike the minutes.
  • the minute part 100 Concentrically with the shaft 16, the minute part 100 has teeth 1004, with which the rack 1100 of a minute feeler 110 meshes. This pivots in the plate and has a nozzle 1102, arranged to cooperate with a minute snail 120. It is the spring of the minute part which exerts a torque which tends to bring the nozzle 1102 into contact with the minute snail 120.
  • the minute snail is associated with a surprise 200 mechanism, better visible on the Figure 5 .
  • This type of mechanism is a safety device connected to the quarter snail 42, to prevent ringing out of tune (counting down) when moving from one quarter to another.
  • the surprise actually has the function of extending, just after the change of shifts and during the first minute, the 0 minute level of the 120 minute snail which is shortened for reasons of safety and space.
  • the surprise 200 comprises a board having a conventional general shape, comprising four arms, distributed at 90, ending with a rung 2001 located at the level of rung 0 of each branch of the minute snail 120.
  • a surprise jumper 122 When triggered of the ringing, a surprise jumper 122 is activated and, when the surpise is in the angular position corresponding to the first minute of a quarter, it is in the path of the surprise jumper which pushes it and shifts it relative to the snail minutes, to extend step 0.
  • the surprise 200 is connected with play to the minute snail 120.
  • the latter includes a pin 1200, engaged in an opening 2002 in the form of a circular sector provided in the surprise board, so as to allow a relative movement between the surprise and the minute snail.
  • the surprise board is elastically connected to the quarter snail.
  • the surprise includes a 2004 spring, coming from one piece with the surprise board and connected by a first of its ends to a branch of said board.
  • the board and its spring are advantageously manufactured by LIGA type microfabrication techniques, or wire electroerosion, for example.
  • the 2004 spring has a succession of meanders, which makes it possible to extend its active length and increase its plastic deformation threshold, which is advantageous given the very small dimensions of the part. Indeed, the spring would otherwise risk plastic deformation.
  • the spring is connected to the quarter snail, for example via an eyelet 2006 which it includes and which cooperates with a pin secured to the quarter piece.
  • the surprise jumper 122 for the surprise 200 which then extends step 0 of the hour snail, by tensioning the spring.
  • the surprise jumper returns to its rest position, it leaves the surprise 200 free which, under the action of the spring 2004, returns to its initial position in relation to the minute snail, with the pin in motor contact with the opening 2002.
  • the minute part comprises a second toothing 1006, provided with ratchet teeth, arranged to cooperate with the crampons 514 of the minute hook 510. Having two crampons is advantageous in that this makes it possible to distribute the pressures which can be significant, when the striking barrel is armed.
  • This second toothing 1006 comprises fifteen tooth bases, each corresponding to a quarter minute, and participating in determining the travel of the minute part 100.
  • the mechanism comprises a flange 130 mounted freely on the shaft 16 and located in the plane of the minute hook 510 (see figures 7 and 8 ). As will be described subsequently, the flange 130 is held in a determined angular position and the shaft 16 pivots freely relative to it.
  • This flange 130 essentially comprises two portions of different radii, concentric with the shaft 16, a first portion 1302 whose radius is less than the radius of the vertices of the second toothing 1006, and a second portion 1304 whose radius is greater than the radius of the vertices of the second toothing 1006.
  • the minute hook 510 when the minute hook 510 is located with its two studs facing the first portion 1302, it enters the second toothing 1006, making the striking parts of the minutes 100 and the quarters 50 integral.
  • the minute hook 510 remains resting against the flange 130, leaving the minute striking part 100 free in relation to that quarters 50.
  • an inclined plane is provided allowing the hook to pass easily from one portion to another.
  • the minute hook 510, the teeth 1006, the flange 130 and the spring member which presses the minute hook against the flange form disengageable connection means between the quarter striking part and the minute striking part, capable of 'evolve between a disengaged state in which the quarter and minute striking parts are free relative to each other, and an engaged state in which the quarter and minute striking parts are united in rotation around said TREE,
  • the minute hook 510 is located opposite the first portion 1302 of the flange 130 and is engaged in the teeth 1006 and the striking parts of the quarters 50 and the minutes 100 are coupled and united in rotation.
  • the minute striking piece 100 is therefore also driven, by the quarter piece 50, under the action of the spring 51 and by its own spring, until the moment when the minute hook 510 rests against the flange 130, facing the second portion 1304.
  • the minute part 100 is then separated from the quarter part 50 and can fall onto its snail 120, under the effect of its own jurisdiction.
  • the quarter piece 50 When then, the quarter piece 50 is driven by the hour piece 40, to strike the quarters, the minute hook 510 which it carries passes from its support on the flange 130, to a position engaged in the second toothing 1006, passing from a position facing the second portion 1304 to a position facing the first portion 1302.
  • the relative position of the part of the minutes 100 has in the interval changed, depending on the position of the minute cam, and the quarter piece 50 can then drive the minute piece 100 to strike the minutes.
  • the flange 130 is integral with a movable bridge 150, pivoted freely on the shaft 16, but whose travel is limited by two windows 152, concentric with the shaft 16 and in which guide screws 154 are arranged.
  • movable bridge 150 comprises an arm terminated by a fork 156, in which an eccentric 158 is placed.
  • the latter makes it possible to adjust the angular position of the movable bridge 150 by a few degrees, in order to adjust the engagement of the minute hook 510 in the second toothing 1006.
  • the eccentric 158 it is possible to adjust the angular position of the flange 130 and therefore to precisely adjust the moment when the minute hook engages with the teeth.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Toys (AREA)
EP23158425.1A 2022-07-11 2023-02-24 Schlagwerkmechanismus Pending EP4307054A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH000827/2022A CH719884A2 (fr) 2022-07-11 2022-07-11 Mecanisme de sonnerie

Publications (1)

Publication Number Publication Date
EP4307054A1 true EP4307054A1 (de) 2024-01-17

Family

ID=89159401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23158425.1A Pending EP4307054A1 (de) 2022-07-11 2023-02-24 Schlagwerkmechanismus

Country Status (2)

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EP (1) EP4307054A1 (de)
CH (1) CH719884A2 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH6076A (fr) * 1892-12-15 1893-07-31 Bernard Reber Mécanisme perfectionné de répétition à quarts
US621002A (en) * 1899-03-14 Fourth to john u
CH16959A (fr) * 1898-06-06 1899-03-15 Ariste Calame Fils Mécanisme de répétition
EP1429214A1 (de) 2002-12-12 2004-06-16 Daniel Roth et Gerald Genta Haute Horlogerie SA Uhr mit Schlagwerk

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US621002A (en) * 1899-03-14 Fourth to john u
CH6076A (fr) * 1892-12-15 1893-07-31 Bernard Reber Mécanisme perfectionné de répétition à quarts
CH16959A (fr) * 1898-06-06 1899-03-15 Ariste Calame Fils Mécanisme de répétition
EP1429214A1 (de) 2002-12-12 2004-06-16 Daniel Roth et Gerald Genta Haute Horlogerie SA Uhr mit Schlagwerk

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Publication number Publication date
CH719884A2 (fr) 2024-01-15

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