200809442 九、發明說明 【發明所屬之技術領域】 本發明有關一時計機心用之游絲內樁總成，且更精確 地是有關一游絲，其內側端部係附接至一內樁，該內樁可 被驅動至一游絲之軸桿上，以便形成該機心之調節裝置。 【先前技術】 其係已知當手錶遭受一陡震時，該.調節裝置之游絲可 變形超出其彈性極限，且如此可遭受一對其操作有害之永 久變形，或如果其組成材料係諸如矽之易脆材料，甚至可 破裂。 專利CH 500 523敘述一在其周邊包含三支座之內樁 ，倘若徑向陡震，該游絲之內部線匝能來至停靠著該等支 座，以限制該游絲之變形。這些三支座係離該游絲軸桿之 中心等距離的。因此，這些支座之一係必需比其他二支座 較靠近該內部線匝。就該最靠近之支座於該機心之正常操 作期間可被該內部線匝所接觸之意.義，此一配置可爲一問 題’其可擾亂該操作，特別是如果該游絲之振動的振幅係 大的，及/或萬一陡震，該最遠支座可爲太遠，而在超過 此支座的彈性極限之前未能對該內部線匝用作一停靠表面 【發明內容】 本發明針對補救該先前技藝之前述缺點，且爲此目的 -5- 200809442 ，根據所附申請專利範圍第1項提供一游絲內樁總成，亦 即一游絲內樁總成包含一內樁及一在其內側端部附接至該 內樁之游絲，該內樁係設計成適於安裝在一軸桿上，該內 樁之外部周邊界定諸支座，該游絲之內部線匝可於一陡震 期間在超過該內部線匝的彈性極限之前來至停靠著該等支 座，其特徵爲該等支座係離該軸桿之中心位在個別距離， 該等距離在該游絲與該內椿間之接合點開始，由該內側至 該外側在該游絲之方向中增加。 此游絲內樁總成之特別具體實施例係在所附申請專利 範圍第2至1 3附屬項中界定。 本發明亦提出一包含此游絲內樁總成之時計機心。 【實施方式】 參考圖1及2，用於根據本發明之第一具體實施例的 時計機心之游絲內樁總成包含一內樁1，其意欲安裝於一 游絲軸桿2上；及一游絲3，而在其內側端部附接至該內 樁1。於該圖面中，游絲3係局部地表示，且僅只可看見 其內部線匝。 內樁1包含三個成三角形配置之彈性支臂4。該等彈 性支臂4界定一中心等邊之三角形開口 5，該開口之內接 圓的直徑比軸桿2的一圓柱形或稍微圓錐形之接觸表面6 的直徑稍微較小，使得該軸桿2可被驅動進入該內樁1， 此驅動作用使支臂4向外彈性地變形。由於其三角形之形 狀’開口 5之周邊界定與軸桿2接觸之三個離散點7。每 -6 - 200809442 一支臂4之寬度L係依歐洲專利文件第ep 1637,940號之 內樁的彈性支臂之方式可變的，以便藉由軸桿2產生一在 給定支臂4中施加之應力的更均勻分佈。 游絲3及內樁1間之接合點8係藉由支臂4間之接合 的三區域9a、9b、9c之一區域9c所界定。既然內樁1被 驅動至軸桿2上，游絲3之內側端部係與軸桿2牢牢地連 接，且如此隨動該游絲之振盪運動。該游絲3之外側端部 (未示出）係以習知方式藉由雙頭螺栓固定至該機心的一固 定式部份、典型該活栓。 內樁1較佳地係具有游絲3之單件式結構。該游絲內 樁總成1、3典型係由一易脆材料、亦即不能遭受塑性變 形之材料所製成，諸如基於砂、玻璃、石英、或鑽石之材 料。格外地於矽之案例中，一用於該游絲內樁總成1、3 之適當製程係該DRIE (深度反應離子蝕刻）製程。然而，於 一變異型中，該游絲內樁總成1、3可爲由一易延展之材 料、諸如金屬材料所製成。. 根據本發明，內樁1之外部周邊的離散片段10a、10b 、及1 〇c構成支座，游絲3之內部線匝可於藉由該機心遭 受陡震期間來至停靠著該等支座。這些支座l〇a、10b、及 10c係藉由該等彈性支臂4之接合處的區域9a、9b、及9c 所界定，且如此配置在一實質上規則之角度分佈中。於內 樁1之平面中，這些支座l〇a、10b、及10c係分別離該軸 桿2的中心Ο在距離Ra、Rb、及Rc處，且更精確地是具 有圓弧形之形狀，並分別設有中心〇及半徑Ra、Rb、及 -7- 200809442200809442 IX. Description of the Invention [Technical Field] The present invention relates to a hairspring pile assembly for a timepiece, and more precisely to a hairspring, the inner end of which is attached to a pile, which is The pile can be driven onto a shaft of a balance spring to form the adjustment mechanism of the movement. [Prior Art] It is known that when the watch is subjected to a steep shock, the balance spring of the adjusting device can be deformed beyond its elastic limit, and thus can be subjected to a permanent deformation which is harmful to its operation, or if its constituent material is such as 矽The brittle material can even be broken. Patent CH 500 523 describes a pile containing three seats at its periphery. In the event of a radial steep shock, the inner wire of the hairspring can come to the support to limit the deformation of the hairspring. These three pedestals are equidistant from the center of the hairspring shaft. Therefore, one of these supports must be closer to the internal turns than the other two seats. In the sense that the closest support can be contacted by the inner wire during normal operation of the movement, this configuration can be a problem 'which can disturb the operation, especially if the hairspring vibrates If the amplitude is large, and/or in the event of a steep shock, the farthest support may be too far, and the internal wire may not be used as a docking surface before exceeding the elastic limit of the support. The invention is directed to the remedy of the aforementioned disadvantages of the prior art, and for this purpose is disclosed in Japanese Patent Application No. 5-200809442, which is incorporated herein by reference. Attached to the hairspring of the inner pile at an inner end thereof, the inner pile is designed to be mounted on a shaft, the outer periphery of the inner pile defines a support, and the inner thread of the balance spring can be steeply shocked During the period beyond the elastic limit of the inner coil, the support is stopped, characterized in that the support is at an individual distance from the center of the shaft, the distance between the balance spring and the inner bore The joint begins, from the inside to the outside Increase in the direction of the hairspring. A particular embodiment of the hairspring pile assembly is defined in the dependent clauses 2 to 13 of the appended patent application. The present invention also proposes a timepiece movement including the hairspring inner pile assembly. [Embodiment] Referring to Figures 1 and 2, a hairspring inner pile assembly for a timepiece movement according to a first embodiment of the present invention comprises a pile 1, which is intended to be mounted on a balance spring shaft 2; The balance spring 3 is attached to the inner pile 1 at its inner end. In this figure, the balance spring 3 is shown locally and only its internal turns are visible. The inner pile 1 comprises three elastic arms 4 arranged in a triangular shape. The resilient arms 4 define a central equilateral triangular opening 5 having a diameter that is slightly smaller than the diameter of a cylindrical or slightly conical contact surface 6 of the shaft 2 such that the shaft 2 can be driven into the inner pile 1, which drives the arm 4 to elastically deform outwardly. Due to the shape of its triangle, the periphery of the opening 5 defines three discrete points 7 in contact with the shaft 2. Every -6 - 200809442 The width L of an arm 4 is variable in the manner of the elastic arms of the pile in the European Patent Document ep 1637, 940, so that a given arm 4 is produced by the shaft 2 A more even distribution of the stress applied. The joint 8 between the balance spring 3 and the inner pile 1 is defined by a region 9c of one of the three regions 9a, 9b, 9c joined by the arms 4. Since the inner pile 1 is driven to the shaft 2, the inner end portion of the balance spring 3 is firmly connected to the shaft 2, and thus the oscillating motion of the balance spring is followed. The outer end portion (not shown) of the balance spring 3 is fixed to a fixed portion of the movement, typically the stopcock, by stud bolts in a conventional manner. The inner pile 1 is preferably a one-piece structure having a balance spring 3. The hairspring inner pile assemblies 1, 3 are typically made of a fragile material, i.e., a material that is not plastically deformable, such as a material based on sand, glass, quartz, or diamond. In the case of U.S., a suitable process for the hairspring pile assemblies 1, 3 is the DRIE (Deep Reactive Ion Etching) process. However, in a variant, the balance spring pile assemblies 1, 3 may be made of an extensible material, such as a metallic material. According to the present invention, the discrete segments 10a, 10b, and 1 〇c of the outer periphery of the inner pile 1 constitute a support, and the inner turns of the balance spring 3 can be stopped by the movement during the steep shock period of the movement. seat. These supports l〇a, 10b, and 10c are defined by the regions 9a, 9b, and 9c where the elastic arms 4 are joined, and are thus disposed in a substantially regular angular distribution. In the plane of the inner pile 1, the supports l〇a, 10b, and 10c are respectively separated from the center of the shaft 2 by distances Ra, Rb, and Rc, and more precisely have a circular arc shape. And have a center 〇 and radius Ra, Rb, and -7- 200809442
Rc。該等距離或半徑Ra、Rb、及RC被選擇爲足夠小的， 以致游絲3於該游絲之正常振動期間不被支座1 〇 a、1 〇 b、 及1 所千擾，但足夠大，以致於一藉由該機心所遭受之 陡震期間，游絲3之內部線匝能在超過此內部線匪的彈性 極限之前，在此包含該接合點8之線匝的任何點來至停靠 著一或數個該等支座l〇a、10b、及10c(圖2)。當該內部 線匝在一陡震之效應下正停靠著一或數個該等支座1 0 a、 10b、及10c時，其他線匝之任一線匝可來至停靠著在其 之前的線匝。這樣一來，游絲3可藉著當其係由易脆材料 所製成時的斷裂而損壞、或當其係由易延展材料所製成時 而永久變形之風險係減少。 有利地是，在游絲3及內樁1間之接合點8開始，該 等距離或半徑Ra、Rb、及Rc在游絲3的捲繞之方向D中 由該內側至該外側增加，以便考慮該事實，即像所有其他 線匝的半徑，游絲3之內部線匝的半徑在此方向D中增加 。如此，於方向D中最靠近該接合點8之支座1 0 a係由該 中心〇隔一距離Ra，該距離係比該下一支座1 Ob及中心 〇間之距離Rb較小，該距離Rb依序係比比該下一支座 1 〇c及中心Ο間之距離Rc較小。由游絲3及內樁1間之 接合點8至中心Ο之距離R8典型係大於距離Ra、或與距 離Ra相同，但小於距離Rb及Rc。 這些距離Ra、Rb、及Rc係藉由界定某些數量之導向 中心〇的徑向力F、藉由計算、藉由譬如有限元素法、該 內部線匝在每一徑向力F之作用下可遭受之最大彈性變形 -8- 200809442 、及藉由選擇足夠大之距離Ra、Rb、及Rc以致不能獲得 或至少不能超過此最大彈性變形、但足夠小以致游絲3於 其正常操作期間不會接觸支座1 0 a、1 0 b、及1 0 c所決定。 於此一點分別停靠著該對應支座10a、1 Ob或10c之 組構中，於施加在此點的徑向力F之作用下，在分別面朝 該等支座l〇a、10b、及10c之每一點3a、3b、及3c，如 此游絲3之內部線匝的變形係一小於或等於該最大彈性變 形的百分之1 〇〇的百分比，該最大彈性變形係該內部線匝 在該點能夠遭受者。這賦予超過一或爲一之安全因素（該 最大彈性變形及當該內部線匝正停靠著· 一支座1 0 a、1 0 b 或1 0c時的彈性變形間之比率）。對於所有支座1 0a、1 〇b 、1 〇c，該百分比較佳地是實質上相同的。於本發明之一 示範實現中，該百分比係大約百分之50(約二之安全因素） ，而於該游絲相對該內部線匝之最大彈性變形的正常操作 期間，用於大約93微米之游絲3的節距及大約3 0微米的 游絲3之線匝的厚度或寬度，該內部線匝之變形的百分比 係大約百分之25。 在基於該內部線匝之變形的線性近似所實現之簡化變 異型中，當作此線匝上之位置的一函數，距離Ra、Rb、 及Rc分別係該內部線匝在停靠處之對應半徑ra、i:b、及 r c，亦即點3 a、3 b、3 c及該中心0間之距離的一相同百 分比。用於大約93微米的游絲3之節距及大約3 0微米的 游絲3之線匝的厚度或寬度，該百分比係例如大約9 0百 分。 -9 - 200809442 如此，其能看出由於距離Ra、Rb及Rc在方向D中 由接合點8開始增加之事實，用於支座l〇a、l〇b及10c 之安全因素可爲完全相同或可爲至少彼此接近。如果發生 徑向陡震，內樁1將因此能夠以可靠之方式保護游絲3， 而不管該陡震之方向，不會擾亂藉由該游絲所形成之調節 裝置的正常操作，縱使該游絲之振動振幅係大的。 圖3顯示本發明之另一具體實施例，在此除了藉由支 臂4間之接合區域9a、9b、9c所界定的支座10a、10b、 l〇c以外，內樁1包含藉由元件11所界定之支座10d、 10e、10f，該等支座l〇d、10e、10f由支臂4之外部側面 於該等支臂4接觸軸桿2的中心區域中徑向地突出。像支 座10&、1013、10(^，該等支座10(1、1(^、1{^係在軸桿2 之中心〇具有中心之圓弧形。在游絲8及內樁1間之接合 點8處，支座l〇a至1 Of與中心〇間之個別距離Ra至Rf 由該內側至該外側開始在該游絲之方向D中增加，換言之 ，Rd<Ra<Re<Rb<Rf<Rc 〇 本發明絕未限制於上面所述之具體實施例。其實明顯 的是可作修改，而不會離開本發明所主張之範圍。例如， 軸桿2所驅動進入的內樁1之開口 5可具有一異於三角形 之形狀，諸如藉由超過三支的若干彈性支臂所界定之另一 規則或不規則之多邊形的形狀。於另一變異型中’該內樁 能採取一分開圓環之形狀，並具有界定該等支座之徑向突 出部份。於又另一變異型中，該等支座可爲連續而非離散 的，更特別地是，該內樁之外部周邊的一大連續片段能用 -10- 200809442 作該支座。該外部周邊接著將具有一與該內部線匝類似之 形狀’亦即，在該游絲及該內樁間之接合點開始由該內側 至該外側於該游絲之捲繞方向D中增加的半徑。於此案例 中，該外部周邊可被一包圍該彈性支臂之機架所界定，或 其可爲一完整內樁之外部周邊，而無彈性切口。 【圖式簡單說明】 • 本發明之進一步特性及優點將由所給與之以下詳細敘 述的閱讀，同時參考所附圖面而變得明顯，其中： 圖1顯示根據本發明之游絲內樁總成處於其停靠位置 中； 圖2顯示圖1之游絲內樁總成處於一陡震期間； Η 3顯示根據本發明之另一具體實施例的游絲內樁總 成處於其停靠位置中。 φ 【主要元件符號說明】 1 :內樁 2 :游絲軸桿 3 :游絲 3纹：點 3b :點 3c :點 4 :彈性支臂 5 :開口 -11 - 200809442 6 :接觸表面 7 =離散點 8 :接合點 9 a ·區域 9b :區域 9c:區域Rc. The equidistances or radii Ra, Rb, and RC are selected to be sufficiently small that the balance spring 3 is not disturbed by the supports 1 〇a, 1 〇b, and 1 during normal vibration of the balance spring, but is sufficiently large, So that during the steep earthquake suffered by the movement, the internal thread of the balance spring 3 can be placed at any point of the line of the joint 8 before the elastic limit of the inner thread is exceeded. One or several of these supports l〇a, 10b, and 10c (Fig. 2). When the inner wire is docked against one or several of the supports 10a, 10b, and 10c under the effect of a steep shock, any of the other turns may come to the line before it. Hey. In this way, the hairspring 3 can be damaged by the breakage when it is made of a fragile material, or the risk of permanent deformation when it is made of a ductile material. Advantageously, starting at the joint 8 between the balance spring 3 and the inner pile 1, the equidistances or radii Ra, Rb, and Rc are increased from the inner side to the outer side in the direction D of winding of the balance spring 3, in order to take this into account. The fact that, like the radius of all other turns, the radius of the inner turn of the balance spring 3 increases in this direction D. Thus, the support 10 a closest to the joint 8 in the direction D is separated by a distance Ra from the center, which is smaller than the distance Rb between the lower block 1 Ob and the center turn. The distance Rb is smaller than the distance Rc between the lower seat 1 〇c and the center. The distance R8 from the joint 8 between the balance spring 3 and the inner pile 1 to the center ridge is typically greater than the distance Ra, or the same as the distance Ra, but less than the distances Rb and Rc. These distances Ra, Rb, and Rc are calculated by the radial force F defining a certain number of guiding centers, by calculation, by, for example, the finite element method, the internal coil is under the action of each radial force F. The maximum elastic deformation that can be suffered -8-200809442, and by selecting a sufficiently large distance Ra, Rb, and Rc so that the maximum elastic deformation cannot be obtained or at least not exceeded, but small enough that the balance spring 3 does not during its normal operation. The contact supports 10 a, 1 0 b, and 1 0 c are determined. At this point, respectively, the corresponding support 10a, 1 Ob or 10c is placed in the configuration, and under the action of the radial force F applied at this point, respectively, facing the supports l〇a, 10b, and Each of the points 3a, 3b, and 3c of the 10c, such that the deformation of the inner turn of the balance spring 3 is less than or equal to a percentage of 1% of the maximum elastic deformation, the maximum elastic deformation being the internal thread Points can be suffered. This gives a safety factor of more than one or one (the maximum elastic deformation and the ratio between the elastic deformations when the inner wire is resting on a seat 10 a, 1 0 b or 10 0). For all supports 10a, 1 〇b, 1 〇c, the percentages are preferably substantially the same. In an exemplary implementation of the invention, the percentage is about 50 percent (about two safety factors) and is used for a hairspring of about 93 microns during normal operation of the hairspring relative to the maximum elastic deformation of the inner turns. The pitch of 3 and the thickness or width of the turns of the balance spring 3 of about 30 microns, the percentage of deformation of the inner turns is about 25 percent. In a simplified variant based on a linear approximation of the deformation of the inner turn, as a function of the position on the turn, the distances Ra, Rb, and Rc are respectively the corresponding radii of the inner turn at the stop. Ra, i: b, and rc, that is, the same percentage of the distance between the points 3 a, 3 b, 3 c and the center 0. For the pitch of the hairspring 3 of about 93 microns and the thickness or width of the turns of the balance spring 3 of about 30 microns, the percentage is for example about 90%. -9 - 200809442 As such, it can be seen that the safety factors for the supports l〇a, l〇b and 10c can be identical due to the fact that the distances Ra, Rb and Rc increase from the joint 8 in the direction D. Or they may be at least close to each other. If a radial steep shock occurs, the stud 1 will thus be able to protect the balance spring 3 in a reliable manner, regardless of the direction of the steep shock, without disturbing the normal operation of the adjustment device formed by the balance spring, even if the balance spring vibrates The amplitude is large. Figure 3 shows another embodiment of the invention, in which the stud 1 comprises components by means of the supports 10a, 10b, l〇c defined by the joint regions 9a, 9b, 9c between the arms 4. The abutments 10d, 10e, 10f defined by 11 are radially projecting from the outer side of the arm 4 in the central region of the arm 2 in contact with the shaft 2. Like the support 10&, 1013, 10 (^, the support 10 (1, 1 (^, 1{^ is in the center of the shaft 2 has a central arc shape. Between the balance spring 8 and the inner pile 1 At the joint 8, the individual distances Ra to Rf between the supports l〇a to 1 Of and the center turn increase from the inner side to the outer side in the direction D of the hairspring, in other words, Rd<Ra<Re<Rb<Rf<Rc> The present invention is in no way limited to the specific embodiments described above, but it is obvious that modifications may be made without departing from the scope of the invention. For example, the inner pile 1 driven by the shaft 2 The opening 5 may have a shape that is different from a triangle, such as another regular or irregular polygonal shape defined by more than three elastic arms. In another variant, the inner pile can take a separate The shape of the ring and having a radially projecting portion defining the seats. In yet another variation, the seats may be continuous rather than discrete, and more particularly, the outer periphery of the pile A large continuous segment can be used as the support with -10- 200809442. The outer perimeter will then have one with the interior The wire has a similar shape 'that is, a joint between the balance spring and the inner pile starts to increase from the inner side to the outer side in the winding direction D of the balance spring. In this case, the outer periphery can be A frame surrounding the resilient arm is defined, or it may be an outer periphery of a complete inner pile without an elastic cut. [Schematic Description] Further features and advantages of the present invention will be given by the following details The reading of the narrative is apparent with reference to the drawings, wherein: Figure 1 shows the balance spring pile assembly in its resting position in accordance with the present invention; Figure 2 shows the balance spring pile assembly of Figure 1 in a steep shock During the period; Η 3 shows that the balance spring pile assembly according to another embodiment of the present invention is in its resting position. φ [Main component symbol description] 1 : Inner pile 2: Hairspring shaft 3: Hairspring 3 pattern: Point 3b : point 3c : point 4 : elastic arm 5 : opening -11 - 200809442 6 : contact surface 7 = discrete point 8 : joint 9 a · area 9b : area 9c: area
1 0 a :支座 l〇b :支座 1 0 C :支座 1 〇 d :支座 l〇e :支座 l〇f :支座1 0 a : support l〇b : support 1 0 C : support 1 〇 d : support l〇e : support l〇f : support
-12--12-