EP3032353B1 - Porte-piton démontable - Google Patents

Porte-piton démontable Download PDF

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Publication number
EP3032353B1
EP3032353B1 EP14197478.2A EP14197478A EP3032353B1 EP 3032353 B1 EP3032353 B1 EP 3032353B1 EP 14197478 A EP14197478 A EP 14197478A EP 3032353 B1 EP3032353 B1 EP 3032353B1
Authority
EP
European Patent Office
Prior art keywords
stud
holder
assembly according
holding assembly
balance
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.)
Active
Application number
EP14197478.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3032353A1 (fr
Inventor
Julien Christan
Laurent Kaelin
Baptist Wyssbrod
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP14197478.2A priority Critical patent/EP3032353B1/fr
Priority to US14/945,900 priority patent/US9411313B2/en
Priority to JP2015236295A priority patent/JP6134372B2/ja
Priority to CN201521028870.6U priority patent/CN205608401U/zh
Priority to CN201510918742.7A priority patent/CN105700325B/zh
Publication of EP3032353A1 publication Critical patent/EP3032353A1/fr
Priority to HK16111557.4A priority patent/HK1223425A1/zh
Application granted granted Critical
Publication of EP3032353B1 publication Critical patent/EP3032353B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/34—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring onto the balance
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/325—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring in a fixed position, e.g. using a block

Definitions

  • a regulating member comprising a sprung balance device.
  • the inner end of the hairspring is fixed to a ferrule provided on the axis of pivoting of the balance.
  • a peg holder housing a pin in combination with a clamping screw for tightening the bolt against the portion of the hairspring engaged in the bolt carrier.
  • the bolt carrier is conventionally attached to a cock also serving to fix one end of the axis of the balance.
  • the manipulations to be performed with these various elements are delicate because access is restricted and the parts are very small.
  • the spiral clamping screw or peg holder it is common for the spiral clamping screw or peg holder to come loose, and / or be lost during handling such as adjusting the active length of the hairspring.
  • the document CH76336 describes a door stud with an elastic arm holding the stud.
  • the object of the invention is to overcome the drawbacks of the prior art by proposing to provide a support or support assembly for a spiral watch spring which allows a simplified assembly or disassembly of the stud.
  • An advantage of this invention is that it allows a simple assembly / disassembly of the piton.
  • the elastic means comprise at least one arm, the free end of said arm carrying the second stop.
  • the elastic means comprise two arms extending from said base, the arms being integral with each other and having a convex shape.
  • the two arms forming the elastic means are symmetrical with respect to the longitudinal axis of said base.
  • each of the two arms comprise a notch.
  • the bolt carrier is made of a plastic material.
  • the bolt carrier is made of a metallic material.
  • the bolt carrier is made of a monocrystalline material.
  • the attachment means comprise a hole arranged on the balance bridge cooperating with a first hole of the stud holder and a screw inserted into the two holes.
  • the attachment means further comprise a stud arranged on the balance bridge and a second hole arranged on the stud holder, said stud cooperating with the second hole.
  • the attachment means further comprise a stud arranged on the stud holder and a second hole arranged on the balance bridge, said stud cooperating with the second hole.
  • the attachment means further comprise a recess arranged on the balance bridge and a projection arranged on the stud holder, said recess cooperating with said projection.
  • the first hole has an arcuate shape allowing the bolt carrier to pivot angularly.
  • the bolt carrier and the balance bridge are monobloc.
  • the present invention proceeds from the general idea of providing a support or support assembly of a spiral clock spring for mounting / dismounting of the simplest piton.
  • FIGS. 1a to 1d are schematic views of a holding or supporting assembly 1 of a spiral spring clock according to a first embodiment.
  • This holding assembly 1 comprises a peg carrier 3 arranged to be fixed to the balance bridge 5 also called cock via fastening means 7.
  • the retaining assembly also comprises a peg 9 fixed on a coil of the spiral spring.
  • the bolt carrier 3 comprises a base 30 having a longitudinal axis.
  • the base 30 may be of any shape. From this base 30 extends a first stop 32. This first stop is in the form of a protrusion of the base 30.
  • the bolt carrier 3 also comprises elastic means 34 provided for fixing the bolt 9 to the bolt carrier.
  • the resilient means comprise an arm 35.
  • This arm 35 extends from the base 30 in a direction similar to that of the first stop 32, that is to say in a direction similar to that of the longitudinal axis.
  • This arm 35 has a rectilinear shape ending in a bend and has a free end at which a second stop 36 is arranged.
  • the elastic arm 35 and the second stop 36 are made so that the second stop 36 is, in an initial position, opposite the first stop 32 when the elastic arm 34 is in rest mode, that is to say that no constraint is applied to it.
  • a space 4 is present between the first stop 32 and the second stop 36, this space forming a housing for the peak 9.
  • the elastic arm 34 is designed to naturally exert a force on the stud 9 when it is placed in the housing 4 present between the first stop 32 and the second stop 36 as visible in FIG. figure 1c .
  • This elastic deformation causes a displacement of the second stop 36 relative to the first stop 34 as visible in FIG. figure 1b .
  • This displacement tends to enlarge the housing.
  • This enlargement of the housing 4 makes it possible to place the stud or to release the stud 9.
  • the displacement of the second stop 36 with respect to the first stop 32 tends to reduce the stress applied to the stud. piton 9.
  • This embodiment has the advantage of being simple because there is no screw or complex manipulation to do. Just move the elastic arm to release the stud 9 or to insert it into the housing. In addition this system allows the mounting or dismounting of the piton without shock.
  • the elastic arm 35 has a non-rectilinear shape.
  • the arm can be curved to have a convex or concave profile as visible in the figure 1d .
  • the elastic means 340 comprise two elastic arms 350.
  • Each elastic arm 350 comprises a first end and a second end. These arms 350 extend from the base 300, via the first end, in a direction similar to that of the first stop 320, that is to say in a direction similar to that of the longitudinal axis.
  • the two elastic arms 350 are secured at their second end.
  • the second stop 360 is arranged to be opposite the first stop 320.
  • the two elastic arms 350 each have a curvature.
  • This curvature is preferentially convex.
  • This convex shape of the elastic arms 350 allows assembly / disassembly of the piton 9 simplified. Indeed, for the mounting / disassembly of the stud, a stress C 'is applied simultaneously on the two elastic arms 350. This stress C' applied to each elastic arm 350 causes a deformation of the arms 350. This deformation tends to bring them closer as visible at the figure 2b .
  • the deformation of the arms 350 causes a displacement of the second stop 360.
  • This displacement of the second stop is characterized in that said second abutment 360 moves away from the first abutment 320 then enlarging the housing 4 located between the first stop stop 320 and the second stop 360.
  • This enlargement of the housing makes it possible to accommodate or easily dislodge the piton 9.
  • the pin 9 is immobilized on the first stop 320
  • the piton 9 is sized to have a larger size than that of the dwelling. therefore, when the second stop 360 moves to return to the initial position that is to say its position when the elastic arms 350 are at rest, it can not find exactly its initial position because of the larger size of the peak 9.
  • the second stop 360 thus exerts a force on said peak 9 in order to maintain it between the first stop 320 and the second stop 360.
  • each elastic arm comprises a notch 352 on its outer surface. These notches 352 are used as specific areas allowing the tool used to exert the pressure on the elastic arms 350 to be positioned there and not to slide during assembly or disassembly.
  • attachment means 7 are provided.
  • the attachment means 7 comprise a through hole or not 70 arranged on the pendulum bridge associated with a through hole 71 arranged on the bolt carrier. These two holes allow the use of a screw 72 for securing the bolt carrier with the balance bridge.
  • This single screw 72 for attaching the bolt carrier 3 to the balance bridge 5 allows to use it as axis of rotation. Indeed, it is conceivable to use this single attachment point to allow the angular adjustment of the bolt carrier, the operator rotating the bolt carrier around the axis of the screw.
  • the fastening means 7 comprise a through hole or not 70 arranged on the balance bridge 5 and a first through hole 71 arranged on the stud holder 3. These two holes allow the use of a screw 72 for the fastening
  • the attachment means 7 further comprise a pin 74 and a second hole 75 passing through or not.
  • the stud 74 can be arranged on the stud holder 3 and the second hole 75 arranged on the balance bridge as visible in FIG. figure 4a or conversely as visible to the Figure 4b and 4c .
  • This stud pair 74 - second hole 75 is used to stabilize the position of the bolt carrier 3 relative to the balance bridge 5. Indeed, having the stud 74 which fits into the second hole 75 can block the angular movements when the operator fixes the screw 72. Indeed, without the presence of the stud 74, there is a risk of angular displacement of the bolt carrier 3 when screwing the screw 72 to secure the bolt carrier 3 to the bridge balance 5.
  • the first hole 71 arranged on the bolt carrier 3 in which the screw 72 is inserted may take the form of an oblong hole or a groove.
  • This groove forms an arc so as to adjust the angular position of the bolt carrier 3.
  • the pin 74 serves as a pivot axis allowing, after loosening the screw, to pivot the bolt carrier 3 to adjust its position.
  • the fastening means 7 comprise a hole 70 passing through or not arranged on the rocker arm 5 and a first through hole 71 arranged on the stud holder 3. These two holes allow the use of a screw 72 for the fastening the peg carrier with the pendulum bridge.
  • the attachment means 7 further comprise guiding means used to stabilize the position of the bolt carrier and serve as a pivot axis for the angular adjustment of said bolt carrier.
  • the guide means comprise a recess 76 arranged on the stud holder and a protrusion or protrusion 77 arranged on the balance bridge.
  • This recess 76 and the projection 77 are made so as to cooperate with each other, the protrusion 77 can penetrate the recess 76.
  • the recess 76 has a shape of a circular arc.
  • the projection 77 may be dimensioned to leave no freedom of movement to the bolt carrier 3 or on the contrary it may be sized to allow an angular adjustment of the position of the bolt carrier.
  • the protrusion 77 and the recess 76 have an arc shape. If the recess is angularly larger than the projection then the peg holder can be adjustable if the hole 70 is also in the form of an arc.
  • the attachment means 7 comprise the guiding means used for the third alternative, ie a recess 76 arranged on the bolt carrier and a projection 77 arranged on the pendulum bridge.
  • the attachment means 7 further comprises a brake78.
  • This brake 78 visible at the figure 7 consists of a flexible arm. This flexible arm extends from the base in a direction opposite to that of the first stop. This flexible arm acts on the balance bridge so that said flexible arm tends to limit the rotation of the stud holder 3 by friction.
  • the bolt carrier 3 can be placed on the upper surface of the balance bridge 5 but also at the level of the lower surface, that is to say the surface opposite the spiral. This configuration at the level of the lower surface makes it possible to bring the stud 9 closer to the balance shaft. This then makes possible the use of small diameter spirals.
  • the bolt carrier 3 can be made of a plastic material such as polyurethane.
  • the advantage of this material is that it can be easily shaped by molding techniques and thus ensure good reproducibility. Moreover, this material has good mechanical properties since it is easily deformable while having good wear resistance.
  • the metallic materials are usable. These materials fall into two categories: crystalline materials and amorphous materials.
  • the crystalline materials can be pure metals such as iron or aluminum or alloys such as brass, steel. These metallic materials have a first advantage of having good mechanical characteristics. Indeed, the metals have a large elastic limit allowing them to undergo a high stress before deforming plastically. For example, aluminum with an elastic limit of 180 to 240 GPa, the steel has an elastic limit of 235 to 1500 GPa according to the type of steel whereas the laminated wood glued to an elastic limit of 32GPa.
  • these metal materials have the advantage of being easily shaped. Indeed, it is possible to form them by molding, by casting or injection into a mold or by stamping that is to say by cutting in a press.
  • Amorphous metals also called metallic glasses are materials whose atoms are not structured between them. Indeed, in the case of an amorphous material, the ratio ⁇ e / E is increased by elevation of the elastic limit ⁇ e. The material therefore sees the stress, beyond which it does not resume its initial shape, increase. This improvement of the ratio ⁇ e / E then allows a larger deformation. This optimizes the dimensions of the bolt carrier and the elastic arms according to whether one wishes to vary the pressure applied by the second stop on the bolt carrier.
  • amorphous materials have the particular characteristic of softening while remaining amorphous in a given temperature range [Tx - Tg] specific to each alloy (with Tx: crystallization temperature and Tg: glass transition temperature). It is thus possible to shape them under a relatively low stress and at a low temperature. This makes it possible to reproduce very precisely fine geometries because the viscosity of the alloy decreases sharply and the latter thus marries all the details of the mold.
  • Another solution is to use a monocrystalline material such as silicon.
  • This material has friction-resistant properties, high yield strength and low density. This material is also attractive because of its antimagnetic properties and its high resistance to corrosion.
  • a material such as silicon may be used because the system according to the present invention allows assembly / disassembly of the stud 9 without shock.
  • the bolt carrier 3 and the pendulum bridge 5 are monoblock that is to say they form a single piece.
  • the balance bridge 5 serves as a base 3 comprising the first stop and from which the elastic arm or arms 35, 350 forming the elastic means 34, 340 extend.
  • This third embodiment makes it possible to dispense with the fastening means 7 of the stud holder 3 to the balance bridge 5. Consequently, there is a risk of misplacement when mounting the stud holder to the balance bridge.
  • this third embodiment makes it possible to lower the costs because there is only one part instead of two and one less process step.
  • the first stop may be configured to serve as a stop for the elastic arms.
  • the first stop 320a visible to the figure 8 is designed to extend in width so as to have a greater width than that of the base 300. This feature makes it possible to limit the displacement of the arms 350 when the stress C 'is applied. Consequently, the deformation of the arms 350 is limited and the risk of breakage decreases.
  • the stud, the first abutment and / or the second abutment are provided with a dish so as to prevent the rotation of the stud on itself.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Connection Of Plates (AREA)
  • Adornments (AREA)
  • Micromachines (AREA)
EP14197478.2A 2014-12-11 2014-12-11 Porte-piton démontable Active EP3032353B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP14197478.2A EP3032353B1 (fr) 2014-12-11 2014-12-11 Porte-piton démontable
US14/945,900 US9411313B2 (en) 2014-12-11 2015-11-19 Balance spring stud-holder
JP2015236295A JP6134372B2 (ja) 2014-12-11 2015-12-03 バランススプリングスタッドホルダー
CN201521028870.6U CN205608401U (zh) 2014-12-11 2015-12-10 保持组件
CN201510918742.7A CN105700325B (zh) 2014-12-11 2015-12-10 游丝外桩保持器
HK16111557.4A HK1223425A1 (zh) 2014-12-11 2016-10-04 游絲外樁保持器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14197478.2A EP3032353B1 (fr) 2014-12-11 2014-12-11 Porte-piton démontable

Publications (2)

Publication Number Publication Date
EP3032353A1 EP3032353A1 (fr) 2016-06-15
EP3032353B1 true EP3032353B1 (fr) 2019-08-07

Family

ID=52021107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14197478.2A Active EP3032353B1 (fr) 2014-12-11 2014-12-11 Porte-piton démontable

Country Status (5)

Country Link
US (1) US9411313B2 (zh)
EP (1) EP3032353B1 (zh)
JP (1) JP6134372B2 (zh)
CN (2) CN205608401U (zh)
HK (1) HK1223425A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3032353B1 (fr) * 2014-12-11 2019-08-07 ETA SA Manufacture Horlogère Suisse Porte-piton démontable
JP6806785B2 (ja) * 2016-03-15 2021-01-06 ザ・スウォッチ・グループ・リサーチ・アンド・ディベロップメント・リミテッド エンドピースを備える針及び組付方法
EP3451076B1 (fr) * 2017-08-31 2020-07-29 ETA SA Manufacture Horlogère Suisse Porte-piton pour un mouvement d'horlogerie mécanique

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT583522A (zh)
US440877A (en) * 1890-02-07 1890-11-18 Botham
US1037742A (en) * 1911-04-19 1912-09-03 Hamilton Watch Co Hair-spring-stud-holding means.
CH76336A (fr) * 1917-07-16 1917-12-01 Edouard Glauser Dispositif de fixation de piton porte-spiral
US3016688A (en) * 1956-08-03 1962-01-16 Hamilton Watch Co Hairspring stud
JPS4511963Y1 (zh) * 1969-08-13 1970-05-27
JPS4923495Y1 (zh) * 1970-03-23 1974-06-24
JPS509027Y1 (zh) * 1970-07-27 1975-03-18
JPS4934378Y1 (zh) * 1973-10-30 1974-09-18
CH614829GA3 (en) * 1976-10-12 1979-12-28 Device for fixing the outer end of a watch hairspring to a framework element of the movement
EP1437634A1 (fr) * 2002-12-19 2004-07-14 Glashütter Uhrenbetrieb GmbH Dispositif de réglage fin pour balancier-spiral
DE10345918A1 (de) * 2003-10-02 2005-05-12 Lange Uhren Gmbh Schwingsystem
JP2006234528A (ja) * 2005-02-24 2006-09-07 Seiko Instruments Inc 調速機構およびこれを備えた機械式時計
EP2761380B1 (fr) * 2011-09-29 2023-05-31 Rolex S.A. Ensemble monolithique ressort spiral-virole
JP5798434B2 (ja) * 2011-10-05 2015-10-21 セイコーインスツル株式会社 時計用軸受、ムーブメント、及び時計
JP5932380B2 (ja) * 2012-02-15 2016-06-08 セイコーインスツル株式会社 ひげ玉、てんぷおよび時計
EP2804055B1 (fr) * 2013-05-16 2016-03-09 Blancpain SA. Ensemble formé d'un piton et d'un porte-piton
EP2876504B1 (fr) * 2013-11-20 2017-07-26 ETA SA Manufacture Horlogère Suisse Porte-piton d'horlogerie sans vis
EP3032353B1 (fr) * 2014-12-11 2019-08-07 ETA SA Manufacture Horlogère Suisse Porte-piton démontable

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
US20160170375A1 (en) 2016-06-16
EP3032353A1 (fr) 2016-06-15
HK1223425A1 (zh) 2017-07-28
JP2016114601A (ja) 2016-06-23
US9411313B2 (en) 2016-08-09
JP6134372B2 (ja) 2017-05-24
CN105700325B (zh) 2018-04-13
CN105700325A (zh) 2016-06-22
CN205608401U (zh) 2016-09-28

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