EP1710637A2 - Vorrichtung zur analogen Zeitanzeige - Google Patents

Vorrichtung zur analogen Zeitanzeige Download PDF

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Publication number
EP1710637A2
EP1710637A2 EP20050077028 EP05077028A EP1710637A2 EP 1710637 A2 EP1710637 A2 EP 1710637A2 EP 20050077028 EP20050077028 EP 20050077028 EP 05077028 A EP05077028 A EP 05077028A EP 1710637 A2 EP1710637 A2 EP 1710637A2
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EP
European Patent Office
Prior art keywords
articulated
instrument according
indexes
index
crank
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.)
Withdrawn
Application number
EP20050077028
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English (en)
French (fr)
Inventor
J-Paul Crabbe
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP20050077028 priority Critical patent/EP1710637A2/de
Publication of EP1710637A2 publication Critical patent/EP1710637A2/de
Withdrawn legal-status Critical Current

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    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/04—Hands; Discs with a single mark or the like
    • G04B19/048—Hands; Discs with a single mark or the like having the possibility of indicating on more than one scale, e.g. hands with variable length which work on different scales
    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/04—Hands; Discs with a single mark or the like
    • G04B19/042—Construction and manufacture of the hands; arrangements for increasing reading accuracy

Definitions

  • variable length needles to the time display as for astronomical indications associated with elliptical paths.
  • This variation in length as a function of the position of the needle was achieved mechanically by associating a slidably deformable needle with a cam-probe device.
  • This principle which involves not only important but also irregular friction (for example due to the return spring associated with the feeler), could easily be accepted in the clocks in view of the motive force available therein.
  • FIG. 11 illustrates a watch in which the time is displayed by means of fixed indexes (a) linked to the dial (A), and indexes (b) and (c) marked on the mobile discs (B). ) and (C) respectively.
  • the object constituted by such a mobile disk (B) its index (b) is itself a mobile index. Similar ambiguities arise when we speak of a dial or even the measurement of time.
  • the measurement of time is generally expressed in several simultaneous units, so it is generally composed of several values.
  • the hour for example is usually expressed by two numerical values: a number of hours and a number of fractions of an hour (quarter of an hour, half hour, minute). This requires two needles (or index). But we use many other units: year, month, day in the month, week, day in the week, lunar month ...
  • the months and days of the week have names, ie alphanumeric values.
  • the phases of the moon can not be represented by graphic symbols, that is to say by symbolic values.
  • dial covers both classical watch dials and dials of physical instruments, as well as refined dials which do not include explicit graduation, but only a few markers or even no markers, on which the eye is able to situate the positions of the hours mentally.
  • Transparent dials are sometimes used to reveal the mechanism or objects behind it.
  • FIG. 3 / a illustrates a dial reduced to a simple plane without any marking: the midday position is implicitly vertical to the axis of rotation of the hands, the eye is capable of content.
  • the midday position is marked by the single digit XII.
  • Figure 3 / c illustrates the very common case where the circumference is divided into quarters.
  • an index is an object that indicates a value, numeric, alphanumeric or symbolic on a dial.
  • An hour hand is an index of hours
  • a minute hand is an index of minutes.
  • the whole hour hand and the minute hand of a watch do not constitute an index because it indicates two values.
  • the word index can also refer to a cursor. It may also have an eyecup (or other type of marker) rather than a tip. It can be rigid or deformable.
  • a "deformable needle by sliding" is a particular deformable index: a telescopic index.
  • FIG. 2 a deformable index with precision (I), capable of following a desired path (R) serving as a reference, and consuming a weak and acceptable driving force by the associated clockwork movement. so as not to disturb his indispensable chronometry. In other words, avoiding the friction related to the telescopic index and cam-probe system which has just given the disadvantages.
  • the invention consists in using an articulated deformable index, the shape of this articulated index being defined by its links with the rest of the system of which it is part. This is to be compared to the way in which the position and shape of an articulated puppet are defined by the puppeteer's drawn threads ( Figure 4). Such an index can follow all kinds of graduation paths.
  • an articulated system is a deformable assembly consisting of movable elements interconnected by means of articulations.
  • An articulated system element may be a single part (elements (C) and (D) of FIG. 6), or result from the assembly of several parts by rigid links (elements (A) and (B) of FIGS. and 6).
  • An articulated assembly deforms with very low friction, and with very good accuracy when its elements are rigid.
  • One or more articulations of an articulated system may be fixed, but the elements of an articulated system are movable.
  • an articulation is a non-rigid link between two elements, allowing rotational movements of one with respect to the other.
  • a crank is a rotating part comprising an eccentric crankpin relative to the axis of rotation thereof, and on which is articulated a connecting rod.
  • crank-crank system is the combination of a crank and an articulated rod on its crank pin. This system transforms a rotational movement into reciprocating rectilinear movement or not.
  • a crank-rod is an articulated system.
  • Figures 5, 6, 7 / a, 7 / b illustrate deformable systems of articulated elements.
  • Figure 7 / a shows an index consisting of an articulated parallelogram. It has four joints (a), one of them coincides with the center of rotation (P) of two of its elements. The opposite hinge is the tip ( I ) of the index.
  • FIG. 7 / b represents an index consisting of two articulated elements (A) and (B), its single articulation (a) is movable and rotates around the center of pivoting (P).
  • Element B comprises an eyelet (O) of center (I).
  • the exploded figure shows a set of hour hand and minute hand of a conventional time display device.
  • the minute hand (a1) is driven on its barrel (a2), itself secured to the wheel (a3); these three pieces together constitute the element (A).
  • the hour hand (b1) is driven on its barrel (b2), itself secured to its wheel (b3); these three pieces together constitute the element (B).
  • the elements (A) and (B) can rotate relative to each other about the common axis of their respective guns which constitutes an articulation.
  • the elements (A) and (B) constitute a system of two articulated elements.
  • the exploded figure 6 derives from FIG. 5.
  • the elements (C) and (D) are added to the elements (A) and (B).
  • the elements (C) and (D) are connected to each other and to the elements (A) and (B) by articulations defined by the axes (I1), (12) and (13).
  • the elements (A), (B), (C) and (D) constitute a set of four articulated elements.
  • the shape of a system of articulated elements can be defined by imposing the values of one or more angles of the figure defined by its articulations, for example the angles ⁇ of FIGS. 7 / a and 7 / b.
  • the elements (A) and (B) each comprise a toothed wheel (respectively (a3) and (b3)) which imposes on it a proper orientation angle, these being the "constrained elements".
  • the set of hour and minute hands of a traditional clock or watch - and parts each of which is integral - is an example of a set of constrained articulated elements and variable geometry, but their association does not constitute an index.
  • Figures 9 / a to 9 / c illustrate rotational constraints imposed on two elements of the articulated system to cause its deformation when moving.
  • the angle ⁇ defines the orientation of the element (A) and
  • the angle ⁇ defines the orientation of the element (B).
  • the derivative of the orientation angle on the dial of one with respect to the orientation angle of the other, d ⁇ / d ⁇ must not be zero, or the angular velocities snapshots of the elements relative to the dial, that is to say the derivatives of the angles ⁇ and ⁇ with respect to time, d ⁇ / dt and d ⁇ / dt, must be different.
  • These systems can be integrated or coupled to a watch movement.
  • each element has its own speed of rotation relative to the dial and each point has its own linear speed.
  • the average angular velocity is that of any element of the index, except cranks apart.
  • Figures 11 / a and 11 / b illustrate the first principle of animation of a variable index geometry with articulated elements, of the type of Figure 9 / a, by means of gearing variable ratios.
  • the variable speed gear train has two eccentric wheels and two oval wheels.
  • the two oval wheels (A) and (B) are free and rotate each with its barrel around the same geometric axis (F).
  • the wheel (A) is integral with the segment (a) of the index and the wheel (B) is integral with the segment (b).
  • the two eccentric wheels (C) and (D) are driven on the same axis (E) and diametrically opposed, they constitute the same element (S) which rotates around the geometric axis of (E). They drive the oval wheels.
  • Each of these last (A) and (B) is integral with a segment of the index articulated through its barrel.
  • the gear ratio of the eccentric wheel to the oval wheel is two to one.
  • the hinged index is in the short position, the two oval wheels are shifted by about 50 °.
  • the index is in long position, they have shifted by 80 ° and the two eccentric wheels have traveled around their axis, in the retro-clockwise direction, an angle of 180 °, on the other hand, the two oval wheels have traveled around their barrel, clockwise, different angles of rotation: the oval wheel (A) has traveled an angle of about 50 ° while the oval wheel (B) has traveled an angle of about 130 °.
  • FIG. 12 illustrates a use of the crank-handle system
  • the constrained element (A) of the index oriented ⁇ and driven in uniform rotation by the clockwork movement, carries the satellite wheel (B), which is oriented ⁇ with respect to the dial, who rolls on the fixed wheel. (R). It is connected to the adjacent segments by two rods pivoting around two crank pins offset by 180 °.
  • the periodicity of the deformations of the index depends on the ratio of the speed of rotation of the crank (s) to the average angular speed of the index.
  • the ratio 3 is particularly suitable for an elongated dial, oblong or polygonal, or rectangular.
  • the ratio is suitable for a square, 1/2 or 3/2 dial at an hour index describing a closed curve at two turns in 24 hours.
  • Figure 13 shows such a graduation path with an index of hours in two positions, 15 hours and 22 hours.
  • FIG. 8 gives an example of an index according to the invention, with ten articulated elements, with a speed ratio of 3. It can be seen in several positions (0, 15, and 35 minutes ).
  • the segment (S) links the two pinions carried by the satellite wheel (not shown) itself carried by the element (A), the rods (B) cause the elements (C).
  • the deformation of the index is caused by the rotation of the segment (S) with respect to the element (A).
  • the associated graduation has a fairly regular linear pitch, much more than the natural graduation that would result from a constant angular step (6 ° per minute).
  • the readability gained is not only for the 12-hour and 6-hour regions, where the index can follow exactly the graduation, but also for the 3-hour and 9-hour regions, where the graduation is significantly larger than graduation with constant angular steps.
  • variable ratio gears can be chosen so that the graduation described by the end of the index is more regular.
  • Figure 10 illustrates the use of a simple connecting rod crank associated with the non-circular wheel (A) of a variable ratio gear. This could be used to further improve the regularity of the graduation.
  • Figures 14 and 15 show the principle of such a device assigned to the display of minutes, the hour hand being rigid.
  • This is a dual-link crank system that fits on a conventional timer train of a series movement (B) in front of or behind its dial (C).
  • B series movement
  • C dial
  • the deformation of the index of minutes is induced by the difference in speed of rotation between the guns of minutes and hours of the clockwork movement (12-1).
  • the gear ratio "satellite of the index of minutes” / "integral wheel of the hours gun” is 3 + 3/12, ie 13/4 (instead of 3 in figure 8), in order to integrate the effect of the rotation of the hours barrel relative to the dial.
  • a bracket (1) where pivots a satellite pinion (H) and its plate (G).
  • this plate pivot the two connecting rods (E).
  • the contour of the minute index (F) consists of four segments. It may be noted that in this figure none of the joints of the articulated system constituting the minute index coincides with the center of pivoting of the element (1).

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromechanical Clocks (AREA)
EP20050077028 2005-04-06 2005-08-08 Vorrichtung zur analogen Zeitanzeige Withdrawn EP1710637A2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20050077028 EP1710637A2 (de) 2005-04-06 2005-08-08 Vorrichtung zur analogen Zeitanzeige

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05290764 2005-04-06
EP20050077028 EP1710637A2 (de) 2005-04-06 2005-08-08 Vorrichtung zur analogen Zeitanzeige

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Publication Number Publication Date
EP1710637A2 true EP1710637A2 (de) 2006-10-11

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012061947A3 (fr) * 2010-11-12 2012-08-16 Hublot S.A., Geneve Mecanisme indicateur de reperes horaires comprenant un organe indicateur a deplacement radial rotatif
WO2017118942A1 (fr) * 2016-01-08 2017-07-13 Charles Hauser Indicateur comprenant des aiguilles a longueur variable
EP3605243A1 (de) * 2018-07-31 2020-02-05 Montres Breguet S.A. Uhr-anzeigemechanismus mit variabler geometrie und elastischem zeiger
EP4300213A1 (de) * 2022-06-27 2024-01-03 Montres Breguet S.A. Mechanismus zur betätigung eines flexiblen anzeigezeigers, der durch ein uhrwerk bewegt wird

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012061947A3 (fr) * 2010-11-12 2012-08-16 Hublot S.A., Geneve Mecanisme indicateur de reperes horaires comprenant un organe indicateur a deplacement radial rotatif
WO2017118942A1 (fr) * 2016-01-08 2017-07-13 Charles Hauser Indicateur comprenant des aiguilles a longueur variable
JP2021515889A (ja) * 2018-07-31 2021-06-24 モントレー ブレゲ・エス アー 弾性針を備える幾何学的構成が可変な計時器用表示機構
CN112213934B (zh) * 2018-07-31 2021-11-19 蒙特雷布勒盖股份有限公司 具有弹性指针的钟表显示机构
WO2020025423A1 (fr) * 2018-07-31 2020-02-06 Montres Breguet S.A. Mecanisme d'affichage d'horlogerie a geometrie variable avec aiguille elastique
WO2020025424A1 (fr) * 2018-07-31 2020-02-06 Montres Breguet S.A. Mecanisme d'affichage d'horlogerie a geometrie variable avec aiguille elastique
CN111902779A (zh) * 2018-07-31 2020-11-06 蒙特雷布勒盖股份有限公司 具有可变几何形状和弹性指针的钟表显示机构
CN112213934A (zh) * 2018-07-31 2021-01-12 蒙特雷布勒盖股份有限公司 具有弹性指针的钟表显示机构
JP2021515226A (ja) * 2018-07-31 2021-06-17 モントレー ブレゲ・エス アー 弾性針を備える幾何学的構成が可変な計時器用表示機構
JP2021515224A (ja) * 2018-07-31 2021-06-17 モントレー ブレゲ・エス アー 少なくとも１つの弾性針を備える計時器用表示機構
EP3605243A1 (de) * 2018-07-31 2020-02-05 Montres Breguet S.A. Uhr-anzeigemechanismus mit variabler geometrie und elastischem zeiger
EP3605244A1 (de) * 2018-07-31 2020-02-05 Montres Breguet S.A. Uhr-anzeigemechanismus mit elastischem zeiger
CN113741163A (zh) * 2018-07-31 2021-12-03 宝玑表有限公司 带有弹性指针的钟表显示机构
JP2021189165A (ja) * 2018-07-31 2021-12-13 モントレー ブレゲ・エス アー 弾性針を備える計時器用表示機構
CN111902779B (zh) * 2018-07-31 2022-02-25 蒙特雷布勒盖股份有限公司 具有可变几何形状和弹性指针的钟表显示机构
JP7181330B2 (ja) 2018-07-31 2022-11-30 モントレー ブレゲ・エス アー 弾性針を備える計時器用表示機構
US11537080B2 (en) 2018-07-31 2022-12-27 Montres Breguet S.A. Timepiece display mechanism with a resilient hand
US11860577B2 (en) 2018-07-31 2024-01-02 Montres Breguet S.A. Variable-geometry timepiece display mechanism with resilient hand
US11886147B2 (en) 2018-07-31 2024-01-30 Montres Breguet S.A. Variable-geometry timepiece display mechanism with resilient hand
EP4300213A1 (de) * 2022-06-27 2024-01-03 Montres Breguet S.A. Mechanismus zur betätigung eines flexiblen anzeigezeigers, der durch ein uhrwerk bewegt wird

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