EP4250019A1 - Uhr-oszillator für ein ultraflaches uhrwerk - Google Patents

Uhr-oszillator für ein ultraflaches uhrwerk Download PDF

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Publication number
EP4250019A1
EP4250019A1 EP22163363.9A EP22163363A EP4250019A1 EP 4250019 A1 EP4250019 A1 EP 4250019A1 EP 22163363 A EP22163363 A EP 22163363A EP 4250019 A1 EP4250019 A1 EP 4250019A1
Authority
EP
European Patent Office
Prior art keywords
escape wheel
teeth
watch
impulse
oscillator
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
EP22163363.9A
Other languages
English (en)
French (fr)
Inventor
Sylvain Geiser
Quentin BENOIST
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.)
Patek Philippe SA Geneve
Original Assignee
Patek Philippe SA Geneve
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 Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Priority to EP22163363.9A priority Critical patent/EP4250019A1/de
Publication of EP4250019A1 publication Critical patent/EP4250019A1/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
    • G04B15/00—Escapements
    • G04B15/06—Free escapements
    • 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
    • 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
    • G04B18/00—Mechanisms for setting frequency
    • G04B18/006—Mechanisms for setting frequency by adjusting the devices fixed on the balance

Definitions

  • the present invention relates to a watch oscillator, that is to say a device comprising a regulating member also called a resonator and an escapement to maintain the oscillations of the regulating member.
  • the escapement of a watch oscillator generally extends over several levels.
  • the Swiss anchor escapement for example, needs, in addition to the large plate driven on the axis of the regulating organ and which carries the control pin, a small plate superimposed on the large plate and cooperating with a dart attached to the anchor to prevent the latter from overturning.
  • the expansion escapement comprises a large plate and a small plate both mounted on the axis of the regulating member and carrying respectively, at different heights, an impulse pallet and a release pallet.
  • the present invention aims to provide a watch oscillator whose escapement has a small height requirement, allowing the oscillator to be integrated into an extra-flat movement.
  • the present invention also relates to a watch movement comprising such a watch oscillator as well as a timepiece, typically a watch and preferably a wristwatch, comprising such a watch movement.
  • the oscillator 1 comprises a regulating member (not shown), a plate 2 adjusted to the axis of the regulating member and carrying a control pin 4, an escapement wheel 6, a locking pinion 8 cooperating with the wheel exhaust 6 and an impulse and release wheel 10 coaxial and integral with the locking pinion 8 and cooperating with the control pin 4.
  • the regulating organ is typically a sprung balance. It could nevertheless be a balance wheel with flexible guidance, that is to say without pivots rotating in bearings, such as that described in the patent application EP 3792700 .
  • the pendulum can have any appropriate shape, with a circular serge or not, continuous or cut.
  • the escapement wheel 6 is coaxial and integral with an escapement pinion (not shown) engaged with the finishing gear of the movement and receiving through this finishing gear the torque of a driving member such as a barrel.
  • the escape wheel 6 is thus permanently subjected to a torque tending to make it rotate clockwise.
  • the teeth of the escape wheel 6 are backlash-adjusting teeth formed by an alternation of rigid teeth 12 and elastic blades 14.
  • the elastic blades 14 extend beyond the circle of head of the rigid teeth 12 and their free end is reinforced.
  • Each rigid tooth 12 comprises on its front side a blocking surface 16 and, between the blocking surface 16 and the root of the tooth, a transmission surface 18 having a profile intended to ensure proper meshing.
  • the teeth 20 of the locking pinion 8 (see figure 2 ) have at their free end a blocking surface 22 and on their rear side a transmission surface 26 having a profile intended to ensure clean meshing.
  • the impulse and release wheel 10 comprises an alternation of impulse teeth 28 and release teeth 30.
  • the impulse teeth 28 are rigid and rigidly linked to the hub 32 of the impulse and release wheel 10.
  • the impulse teeth 28 have an impulse flank 34 and, near their foot, a hook 36.
  • the release teeth 30 are also rigid but each of them is suspended by an elastic blade 38 , of curved and irregular shape in the example illustrated, to the impulse tooth 28 which immediately precedes it.
  • each release tooth 30 cooperates via a hook 40 which is integral with the hook 36 of the impulse tooth 28 which immediately follows it.
  • the oscillator 1 operates according to the oscillation cycle described below, comprising a first and a second alternation of the regulating member.
  • the first alternation begins with a so-called locking or rest phase ( figures 1 and 2 ) during which the balance wheel and the plate 2 rotate freely in the clockwise direction under the action of the return spring (spiral or flexible guide) of the balance wheel, and during which the escape wheel 6 is held immobile by a bracing effect produced by the contact between the blocking surface 16 of a rigid tooth 12a of the escape wheel 6 and the blocking surface 22 of a tooth 20a of the blocking pinion 8.
  • These blocking surfaces 16, 22 are in fact oriented such that the force exerted by the escape wheel 6 on the locking pinion 8 is directed towards the center of the locking pinion 8, as illustrated by the arrow F in the figure 2 .
  • this locking phase therefore, the escape wheel 6, the locking pinion 8 and the impulse and release wheel 10 are blocked.
  • the control pin 4 hits the rear flank of a release tooth 30a of the impulse and release wheel 10 ( figure 1 ). Being retained by the impulse tooth 28a which immediately follows it via the hooks 36, 40, the release tooth 30a is in this sense rigidly linked to the hub 32 of the impulse and release wheel 10. The action of the control pin 4 on the release tooth 30a therefore turns the impulse and release wheel 10, and with it the locking pinion 8 whose tooth 20a begins to slide on the locking surface 16 of the tooth 12a of the escape wheel 6 (so-called release phase; cf. figures 3 and 4 ).
  • the escape wheel 6 is released and drives the locking pinion 8 by the cooperation between the transmission surfaces 18 and 26 ( figures 5 and 6 ).
  • the impulse edge 34 of the impulse tooth 28a then catches up with the control pin 4 and pushes it, thus giving an impulse to the regulating member (so-called impulse phase; cf. figures 7 and 8 ).
  • the second alternation of the regulating member begins, during which the escape wheel 6 and the locking pinion 8 remain permanently locked .
  • the control pin 4 comes into contact with the elastic blade 38 connecting the impulse tooth 28a to the release tooth 30b which immediately follows it.
  • the action of the control pin 4 on this elastic blade 38 then on the front side of the release tooth 30b retracts the latter, the hook 40 coming to be placed in a recess 42 provided at the foot of the impulse tooth 28b which immediately follows the release tooth 30b.
  • the control pin 4 can thus continue its travel in the counterclockwise direction without driving the impulse and release wheel 10 and without unblocking the escape wheel 6.
  • the second alternation is a random alternation where no impulse is communicated to the governing body.
  • escape wheel 6 - locking pinion 8 - impulse and release wheel 10 which forms with the plate 2 and its pin 4 the escape of the oscillator 1
  • the risk of overturning and stopping in the event of a shock received by the oscillator 1 does not exist not. It is therefore not necessary to equip the exhaust with a stinger and a small plate which would increase the overall height.
  • the exhaust doesn't need any gaskets either.
  • the exhaust is secured by the shape and construction of its parts without requiring additional components for this.
  • the safety elements such as the elastic blades 14, 38, the hooks 36, 40 and the teeth 16, 20 are defined during the manufacture of the parts and do not require adjustment.
  • a single control element, the pin 4 is to be positioned on the plate 2 and this control element occupies a single level in height.
  • control element could be in a form other than a dowel, for example in the form of a paddle or a finger.
  • the oscillator 100 comprises a regulating member 102, an escape wheel 104 and a trigger 106.
  • the regulating member 102 is typically a sprung balance, of which only the balance 108 is shown on the Figure 11 .
  • the regulating member 102 could nevertheless be a flexible-guided balance, such as that described in one of the patent applications EP 3792700 And EP 3502784 .
  • the pendulum can have any appropriate shape, with a circular or non-circular, continuous or cut serge.
  • a control pin 110 driven into the balance 108 is arranged to cooperate with the escape wheel 104.
  • the escapement wheel 104 is coaxial and integral with an escapement pinion (not shown) engaged with the finishing gear of the movement and receiving through this finishing gear the torque of a driving member such as a barrel.
  • the escape wheel 104 is thus permanently subjected to a torque tending to make it rotate in the clockwise direction of the Figure 11 and counterclockwise figures 12 to 19 .
  • the escape wheel 104 comprises an alternation of impulse teeth 112 and clearance teeth 114.
  • the impulse teeth 112 are rigid and rigidly linked to the hub 116 of the escape wheel 104. They each include a flank d pulse 118 and a locking pin 120 defined by a notch 122 formed in the top of the tooth.
  • the release teeth 114 are also rigid but each of them is suspended by an elastic blade 124, of serpentine shape in the example illustrated, to the impulse tooth 112 which immediately precedes it.
  • Each release tooth 114 is extended by a concave arm 126 extending forward. This concave arm 126 fits a concave arm 128 extending backwards the impulse tooth 112 which immediately precedes the release tooth 114 and from which the elastic blade 124 extends.
  • the trigger 106 is in the form of a lever 130 pivoted around a fixed point 132 and connected to another fixed point 134 by an elastic blade 136 whose shape, in the example illustrated, is straight in the state of rest.
  • the end 138 of the elastic blade 136 joined to the lever 130 is movable in rotation around the point 132 via the lever 130.
  • the other end of the elastic blade 136 is movable in rotation around the point 134 via of a ring 140.
  • the elastic blade 136 acts as a return spring applying the lever 130 against the escape wheel 104.
  • the end of the lever 130 has a lateral notch 142 arranged to successively receive the locking lugs 120.
  • the oscillator 100 operates according to the oscillation cycle described below, comprising a first and a second alternation of the regulating member 102.
  • the first alternation begins with a so-called locking or rest phase ( Figure 12 ) during which the balance and its control pin 110 rotate freely in the clockwise direction under the action of the return spring (spring or flexible guide) of the balance, and during which the escape wheel 104 is held immobile by the cooperation between the notch 142 of the lever 130 and a locking pin 120.
  • the lever 130 is in fact applied by the elastic blade 136 against the top of an impulse tooth 112a and its notch 142 receives the blocking pin 120a of this impulse tooth 112a.
  • a side surface 144 of the notch 142 and a side surface 146 of the locking lug 120a bearing against each other have an inclination producing, under the action of the torque received by the escape wheel 104, a pulling effect which attracts the lever 130 towards the impulse tooth 112a.
  • the control pin 110 hits the release tooth 114a which immediately follows the impulse tooth 112a ( Figure 13 ), which moves the release tooth 114a forward thanks to the elasticity of the blade 124 by sliding the arm 126 on the arm 128. This movement is just sufficient for the end of the arm 126 to push the end of the lever 130 and moves the lever 130 away from the locking lug 120a (so-called release phase).
  • the escape wheel 104 begins to rotate counterclockwise.
  • the impulse edge 118 of the impulse tooth 112b which immediately follows the release tooth 114a catches up with the control pin 110 and pushes it, thus communicating an impulse to the regulating member (so-called impulse phase; cf. figures 14 to 16 ).
  • the second alternation of the regulating member begins, during which the escape wheel 104 remains permanently locked.
  • the control pin 110 comes into contact with the front side of the release tooth 114b which immediately follows the impulse tooth 112b ( Figure 17 ).
  • the action of the control pin 110 on this release tooth 114b retracts the latter thanks to the elasticity of the blade 124 ( Figure 18 ).
  • the control pin 110 can thus continue its travel in the counterclockwise direction without driving the escape wheel 104 ( Figure 19 ).
  • the second alternation is a random alternation where no impulse is communicated to the regulating organ.
  • the escapement formed by the escape wheel 104, the detent 106 and the control pin 110 is less bulky in height due to the fact that it only has one control element (the pin 110) for release and impulse.
  • This control element could also be in a form other than a pin, for example in the form of a paddle or a finger.
  • control element is carried directly by the balance wheel.
  • present invention does not exclude that the control element is carried by a plate secured to the axis of the balance, as in the first embodiment.
  • control element in the first embodiment could be carried directly by the balance wheel.
  • the exhaust 104, 106, 110 is secured by the shape and construction of its parts without requiring additional bodies for this.
  • the traction exerted between the lever 130 and the locking lugs 120 protects the escapement against untimely jumps of the escape wheel 104 during shocks and/or under the effect of the inertia of the escape wheel. exhaust 104.
  • Making the lever 130 cooperate with locking lugs 120 separated from the impulse flanks 118 of the impulse teeth 112 makes it possible to optimize this pulling effect and, more generally, the operation of the exhaust.
  • the balance 108 (cf. Figure 11 ) carries adjustment weights 148.
  • these weights 148 are located in housings 150 made in the serge 152 of the balance 108 and do not exceed, or almost not, the thickness of the serge 152.
  • the weights 148 are held in these housings 150 only by the pressure exerted by their periphery on the side wall of the housings 150 thanks to the elasticity conferred by a slot 154 of the weights 148, elasticity which also facilitates the introduction of the weights 148 into the housings 150.
  • the weights 148 can be rotated in their housings 150 by means of a tool for adjusting the moment of inertia and/or the unbalance of the balance wheel.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Micromachines (AREA)
EP22163363.9A 2022-03-21 2022-03-21 Uhr-oszillator für ein ultraflaches uhrwerk Pending EP4250019A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22163363.9A EP4250019A1 (de) 2022-03-21 2022-03-21 Uhr-oszillator für ein ultraflaches uhrwerk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22163363.9A EP4250019A1 (de) 2022-03-21 2022-03-21 Uhr-oszillator für ein ultraflaches uhrwerk

Publications (1)

Publication Number Publication Date
EP4250019A1 true EP4250019A1 (de) 2023-09-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22163363.9A Pending EP4250019A1 (de) 2022-03-21 2022-03-21 Uhr-oszillator für ein ultraflaches uhrwerk

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EP (1) EP4250019A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704051A2 (fr) * 2010-11-04 2012-05-15 Nivarox Sa Echappement synchrone pour mécanisme d'horlogerie.
CH712091A2 (fr) * 2016-02-03 2017-08-15 Calabrese Vincent Balancier compensateur pour mouvements d'horlogerie.
EP3293583A1 (de) * 2016-09-07 2018-03-14 Dominique Renaud SA Hemmungsmechanismus
EP3405839A1 (de) * 2016-01-21 2018-11-28 Dominique Renaud SA Coup-perdu-hemmungsmechanismus
EP3502784A1 (de) 2017-12-22 2019-06-26 Patek Philippe SA Genève Uhrresonator mit flexibler führung
EP3792700A1 (de) 2019-09-16 2021-03-17 Patek Philippe SA Genève Oszillator einer uhr mit flexiblem zapfen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704051A2 (fr) * 2010-11-04 2012-05-15 Nivarox Sa Echappement synchrone pour mécanisme d'horlogerie.
EP3405839A1 (de) * 2016-01-21 2018-11-28 Dominique Renaud SA Coup-perdu-hemmungsmechanismus
CH712091A2 (fr) * 2016-02-03 2017-08-15 Calabrese Vincent Balancier compensateur pour mouvements d'horlogerie.
EP3293583A1 (de) * 2016-09-07 2018-03-14 Dominique Renaud SA Hemmungsmechanismus
EP3502784A1 (de) 2017-12-22 2019-06-26 Patek Philippe SA Genève Uhrresonator mit flexibler führung
EP3792700A1 (de) 2019-09-16 2021-03-17 Patek Philippe SA Genève Oszillator einer uhr mit flexiblem zapfen

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