EP3382471A1 - Watch with digital time display - Google Patents

Abstract

The present invention relates to a timepiece, in particular a wristwatch, with a digital display (10), with a gear train, by means of which a one-minute disc (11) can be rotated rotatably in cyclic steps, with a switching device, by means of which a decimal disc (12) can be indexed. and an hour ring (13) indexable during one revolution of the ten minute disc (12), the movement comprising a first gear chain (20, 50) and a second gear chain (30, 60) connected to a triggering mechanism (40, 70 ), wherein the first transmission chain (20, 50) controls the second transmission chain (30, 60) so that the second transmission chain transmits a force in the form of a rotary movement to a one-minute wheel (36, 66) every minute, with the clock on manually operable disc interlocking with a plurality of serially meshing with each other Zeigerstellräder (81, 82, 83, 84, 85), wherein the last Zeigerstellrad (85) with d he Einerminutenscheibe (11) is firmly connected and consisting of the last pointer dial (85) and the Einmininutenscheibe (11) assembly loosely and freely rotatably on a Zwischenradtrieb (86) sits, which is part of the second gear chain (30, 60), and wherein on the Zwischenradtrieb (86) a star (87) coaxially fixed and on the Einerminutenscheibe (11) a conjugate shaped detent spring (88) is mounted to the alignment of Einerminutenscheibe (11) in a dial window of the clock and in the presence of a higher Force as the detent spring force to allow a gradual engagement and disengagement between the Zwischenradtrieb (86) and the Einerminutenscheibe (11). The clock has a specifically designed release mechanism (40, 70) and a special arrangement of the display discs (11, 12, 13).

Description

area of the invention

The present invention relates to the field of mechanical watches, in particular watches, which are equipped with a digital time display by means of multiple dials.

The present invention relates in particular to a timepiece according to the preamble of claim 1. This relates to a timepiece, in particular a wristwatch, having a digital display which has a one-minute disc, a ten-minute disc, and an hour ring, and a timepiece with a balance. A spiral system and a gear train through which a one-minute wheel of the one-minute disc is rotatably indexable in cyclic steps with ten steps per revolution, and with a switching device through which the ten-minute disc is rotatably indexable with six steps per revolution, wherein the hour ring during one revolution the Zehnerminutenscheibe of the Zehnerminutenscheibe via a Maltese intermediate wheel with twelve steps per revolution rotatable fortschaltbar, and with a manually operable disc interlocking, wherein the movement at least a first barrel, a first gear chain and a second gear chain u mfaßt, wherein both transmission chains are connected to a trigger mechanism and the first transmission chain controls the second transmission chain by means of the trigger mechanism such that the second transmission chain every minute, clocked via the balance-spiral system of the movement, a force in the form of a rotational movement to the Einerminutenrad transfers.

Background of the invention and prior art

As early as the 16th century, clock-less clocks appeared, indicating the time with moving or jumping numbers on rotating discs or rings. However, these were monumental clocks on towers or churches.

In the second half of the 19th century, index pocket watches appeared digitally indicating both the hours and the minutes by mechanically jumping digits, but the seconds were indicated analogously with a pointer. In particular, the manufactories IWC, Cortebert Watch, Gedeon Thommen, Aeby & Landry, Kaiser, and many others made such index pocket watches. An overview of this former production finds the expert in the book " The Jumping Number Pocket Watches "by Alex Kuhn, Verlag Simonin, 2010 , The first technical descriptions of this type of clock can be found in particular in the so-called Pallweber patents, see, for example, the German Reich Patent 25 042 from 1883.

In the meantime, these pocket watches have been essentially completely ousted from the market by mechanical watches with analog displays. In the sixties also appeared cheaper electronic wristwatches with digital displays of any kind, which made a further development of mechanical watches with digital display prima facie little sense. In view of the current demands of the consumers on display accuracy and adjustability, the field of mechanical clocks with digital time display can thus, to a large extent, be viewed as a new technical field.

• Die Patentschrift DE 10 2007 042 797 offenbart eine Uhr, insbesondere eine Armbanduhr, mit einem Hauptkraftspeicher, durch den über einen Getriebezug ein Nachspannelement eines eine erste schrittschaltbare Einrichtung bildenden Nachspannwerks um eine Nachspannachse von einer Nachspannsteuerung in zyklischen Schritten gesteuert drehbar antreibbar ist und eine mit ihrem einen Ende mit dem Nachspannelement verbundene Speicherspiralfeder nachgespannt wird, wobei das andere Ende der Speicherspiralfeder mit einem das Uhrwerk drehbar antreibenden Rad verbunden ist, das mit dem Räderwerk der Hemmung in Eingriff steht, wobei durch ein Element des Getriebezugs von dem Hauptkraftspeicher zum Nachspannelement eine weitere schrittschaltbare Einrichtung in zyklischen Schritten drehbar antreibbar ist. Das Uhrwerk dieser Uhr ist hauptsächlich in sogenannten Uhrwerken mit konstantem Drehmoment dienlich und besitzt daher zur Vermeidung großer Drehmomentschwankungen ein die Speicherspiralfeder in regelmäßigen Zeitabständen aufladendes Nachspannwerk.

On a few innovations compared to the pocket watch production of the 19th century should be noted here:

• The patent DE 10 2007 042 797 discloses a clock, in particular a wristwatch, with a main power storage, by means of a gear train a Nachspannelement of a first indexable device forming Nachspannwerks is rotatably driven about a Nachspannachse controlled by a Nachspannsteuerung in cyclic steps and a connected at one end to the Nachspannelement memory spiral spring is tensioned, wherein the other end of the memory coil spring is connected to a clockwise rotatably driving wheel, which is engaged with the gear train of the escapement, wherein a further step-switching device is rotatably driven in cyclic steps by an element of the gear train from the main power storage to Nachspannelement , The clockwork of this clock is mainly used in so-called clockworks with constant torque and therefore has to avoid large torque fluctuations a memory coil spring at regular intervals charging supercharger.

The patent DE 10 2009 019 335 discloses a timepiece, particularly a wristwatch, having a drive by which a gear train of a digital dial having multiple dials is rotatably driven in cyclic increments, with a drive gear capable of rotatably indexing a single gear of a one minute disc with ten steps per revolution, with one of the one gear powered indexing device, by which a ten-minute dial is rotatably indexable with six steps per revolution, and with an hour-dial which is rotatably rotatable during one revolution of the ten-minute slice from the ten-minute slice with twelve steps per revolution, wherein a drive, which is driven by a manually driven Scheibenstellrad in the Gear train engages, can be driven, the drive is positively coupled via a control gear with the drive wheel. The realized by said Stellgesperre coupling between the manually driven by the Scheibenstellrad drive and the drive wheel of the clockwork of this clock has a specific design and is mounted in particular axially slidably on the axis of coaxial with the drive wheel arranged drive, the gear train to save space and reduction the number of components is designed as a continuous gear train with consecutively driven dials.

Also the Swiss patent CH 511,471 discloses such a timepiece, wherein a one-minute disc is rotatably indexable with ten steps per revolution, with a shifting device through which a ten-minute disc with six steps per revolution is rotatably indexable, and with an hour-pulley which is rotated during one revolution of the decennial disc from the ten-minute disc with twelve steps rotatable per revolution can be switched. The factory has a first transmission chain which transfers the power from a first barrel to a first escapement of a regulator of the timepiece and a second gear chain which transmits the force from a second barrel to the indicator discs, the rotation of the wheels of the second gear chain of a wheel of the first transmission chain is controlled. The necessary blocking of the second transmission chain between the indexing steps of the display discs and their release at the time of progression is accomplished via a second armature of a second escapement in cooperation with superimposed, mutually rotatable plates, which requires a relatively complex structure of the movement.

In the Swiss patent CH 581 857 discloses a spring mechanism of a clock of this type, wherein a gear of a display disc meshes with a pointer wheel, which is mounted on a rocker. A block of the rocker is engaged with a toothing of the disc, but that is Blocks solved during a manual correction process as well as by the automatic movement of the rocker during the normal course of the clock from the teeth.

The European patent application EP 3 032 348 also discloses a spring mechanism having a drive wheel, a time display and a bouncing member attached to said time display and coaxial with the drive wheel, and a cam configured to release a four-arm anchor once per unit time. This arrangement is especially designed for displays that make a sudden change every second, in particular using a single power source in the movement.

Task of the invention

• bei der schrittweisen Drehung der im Vergleich zu Zeigern relativ schweren Anzeigescheiben eine möglichst geringe Veränderung der Amplitude des Unruh-Spiral-Systems, respektive der Frequenz des Regulierorgans des Uhrwerks, aufweist,
• eine möglichst präzise Auslösung der schrittweisen Drehung der Anzeigescheiben besitzt,
• ein einfaches und robustes System für besagte schrittweise Drehung der Anzeigescheiben sowie für deren Sicherung zwischen den Fortschaltschritten aufweist,
• über ein manuell betätigbares Scheibenstellwerk, das eine Einstellung der Uhrzeit in beide Richtungen erlaubt und zugleich einen sicheren Einstellvorgang ohne Möglichkeit von Schäden am Uhrmechanismus verwirklicht, verfügt,
• eine ästhetisch ansprechende Uhrzeitanzeige bei vertretbarem Raumbedarf der Anzeigescheiben sowie Dicke des Uhrwerks ermöglicht, sowie bei alledem
• eine einfache Montage erlaubt und eine serientaugliche Lösung darstellt.

Despite the previously known embodiments, it is further desirable to have a generic watch, which

• in the stepwise rotation of the relative to pointers relatively heavy display discs as little change in the amplitude of the balance-spiral system, respectively, the frequency of Regulierorgans of the movement, has,
• has the most accurate possible triggering of the gradual rotation of the display discs,
• has a simple and robust system for said stepwise rotation of the display slices and for securing between the indexing steps,
• via a manually operable disc interlocking, which allows adjustment of the time in both directions and at the same time realizes a secure setting process without possibility of damage to the watch mechanism, has,
• An aesthetically pleasing time display with reasonable space requirements of the display discs and thickness of the movement allows, as well as in all
• allows easy installation and represents a solution suitable for series production.

The aim of the present invention is therefore to avoid the disadvantages of the previous embodiments, the realization of the above-mentioned advantages, and the provision of a clock, which has a number of dials having digital display, the dials should be triggered instantaneously and be switched with the least possible expenditure of energy , In particular, the display discs are to stand for one minute, while at the end of each minute, as soon as the second hand has reached sixty seconds, the one-minute disc is immediately triggered and rotated by one position. At the end of ten minutes, the ten-minute window should be additionally turned on and, at the end of one hour, the hourly disc rotated one more position. Another object of the present invention is to provide a manually operable disc interlock to safely set the time in both directions. Another object of the present invention is an attractive digital time display in the context of mechanical wristwatches. This is to be achieved by using a constructionally simple and robust designed clockwork, which ensures a safe operation.

Summary of the invention

The object of the present invention is characterized by the features mentioned in the characterizing part of claim 1. According to a first aspect of the invention, a timepiece according to the invention comprises a manually operable disc interlocking, which has a plurality of serially meshing Zeigerstellräder which are displaceable by an elevator shaft in its pulled-out position by means of a clutch drive in motion, said last Zeigerstellrad with the Einerminutenscheibe is firmly connected and from the last pointer dial and the One minute slot existing assembly loosely and freely rotatably seated on a Zwischenradtrieb, which is part of the second gear chain, and wherein the Zwischenradtrieb a star coaxial fixed and mounted on the Einerminutenscheibe a conjugate shaped detent spring to the alignment of the Einerminutenscheibe in a dial window of the clock and in the presence of a higher force than the detent spring force to allow a gradual engagement and disengagement between the Zwischenradtrieb and the Einerminutenscheibe.

These features make it possible to realize a disc interlocking with a safe setting of the time in both directions, the disc interlocking has a simple and effective coupling between the Zwischenradtrieb and the Einerminutenscheibe.

According to a second aspect of the invention, a timepiece according to the invention comprises, in particular, a triggering mechanism having a control disc, two trigger levers each having first and second lever arms, and a trigger wheel, the first lever arms of the two trigger levers being staggered and positioned at the periphery of the trigger Rest control disc such that after each minute of the first lever arm of the trigger lever from the control wheel edge falls into a recess of the control disk and the second lever arm of this release lever releases the trigger wheel of the trigger mechanism, so that the second gear chain rotates freely until a tooth of the trigger wheel on second lever arm of the other trip lever strikes, with the Einerminutenrad and the Einerminutenscheibe rotates by one step. Preferably, in this case, the first gear chain has a driven by the first barrel Großbodenrad, driven by the large bottom wheel Kleinbodenrad, as well as a meshing with the Kleinbodenrad Zwischentrieb, said control disc is fixed to the axis of the intermediate drive.

Through these features, a number of advantages are achieved, in particular, the amplitude fluctuations in the balance-spiral system are kept low and it is possible to implement sixty releases per hour with a relatively simple assembly, in particular thanks to a 30-stage step disc or a as divided into two sections cam disc designed control disc and two associated lever, which has the advantage that the steps or sections can be made larger, which in turn causes a safer operation.

According to a third aspect of the invention, in a timepiece according to the invention, the axes of the one-minute and ten-minute disks are parallel to each other and inside the hour-numeric ring, the one-minute disk being two-stage and the edge of its upper, digit-bearing stage facing the ten-minute disk that the surfaces of the two discs are in the same plane. Preferably, the one-minute slot, the ten-minute slot and the hourly dial of the digital display are also connected to one another via a switching device in the form of a Geneva drive.

These features provide an aesthetically pleasing digital time display for mechanical watches, with the display resulting in a reasonable thickness of the movement with a comparatively small space requirement of the display discs. In addition, the arrangement of the axes of the one- and ten-minute disc parallel to each other and inside the hour numerals ring allows a certain freedom in the arrangement of the clock display on the clock dial.

Further features and advantages will become apparent from the dependent claims and from the description below with reference to the accompanying drawings, the invention in detail.

Brief description of the pictures

Fig. 1a

perspektivische Ansichten der Ziffernscheiben von der Zifferblattseite und Brückenseite,

Fig. 1b

eine perspektivische Ansicht der Anzeigescheiben, mit Aussparungen zur Vereinfachung des Verständnisses, in der Position vor einem Minuten- und Stundensprung,

Fig. 1c

eine perspektivische Ansicht der Anzeigescheiben, ebenfalls mit Aussparungen zur Vereinfachung des Verständnisses, während der Schaltung,

Fig. 2

eine Draufsicht von der Brückenseite einer ersten Ausführungsform des Getriebestrangs,

Fig. 3a

eine perspektivische Schrägansicht des Auslösemechanismus des Getriebestrangs der Fig. 2,

Fig. 3b

eine Draufsicht des Auslösemechanismus der Fig. 3a,

Fig. 3c

eine Seitenansicht des Auslösemechanismus der Fig. 3a,

Fig. 4

eine perspektivische Detailansicht der Auslösehebel der Fig. 3a,

Fig.5

eine Draufsicht von der Brückenseite einer zweiten Ausführungsform des Getriebestrangs,

Fig. 6

eine perspektivische Ansicht des Gehwerks der Fig. 5,

Fig. 7

eine Detailansicht der Auslösehebel der Fig. 5,

Fig. 8a

eine Detailansicht des Auslösemechanismus der Fig. 5 in Draufsicht,

Fig. 8b

eine Detailansicht des Auslösemechanismus der Fig. 5 in Schnittansicht,

Fig.9

eine Draufsicht des Aufzugsmechanismus in der Position zur Einstellung der Ziffernscheiben, wobei einige Teile zum einfacheren Verständnis transparent dargestellt sind,

Fig. 10a

eine Schnittansichtdes Scheibenstellwerks der Einerminutenscheibe, insbesondere im oberen Teil der Ansicht, während im unteren Teil die zweite Getriebekette zum Antreiben der Digitalanzeige teilweise sichtbar ist,

Fig, 10b

eine Draufsicht auf die Kupplungselemente des Scheibenstellwerks der Einerminutenscheibe,

Fig. 11

eine Draufsicht des Aufzugsmechanismus in zwei Positionen,

Fig. 12a

eine Detailansicht des Blockiersystems in einer Position,

Fig. 12b

eine Detailansicht des Blockiersystems in einer weiteren Position,

Fig. 12c

eine Detailansicht eines Blockiersystems, das eine alternative Ausgestaltung des Blockierhebels aufweist,

Fig. 12d

eine Detailansicht eines Blockiersystems, das eine weitere alternative Ausgestaltung des Blockierhebels aufweist,

Fig. 13

eine werksseitige Draufsicht auf die Aufzugsräder,

Fig. 14a

eine Detailansicht des Aufzugsmechanismus in Schnittansicht,

Fig. 14b

eine Detailansicht des Aufzugsmechanismus in Schrägansicht.

The accompanying figures illustrate by way of example two embodiments of a clock according to the invention with a digital display

Fig. 1a

perspective views of the dials from the dial side and bridge side,

Fig. 1b

a perspective view of the display discs, with recesses for ease of understanding, in the position before a minute and hour,

Fig. 1c

a perspective view of the display discs, also with recesses for ease of understanding, during the circuit,

Fig. 2

a plan view of the bridge side of a first embodiment of the gear train,

Fig. 3a

an oblique perspective view of the release mechanism of the gear train of Fig. 2 .

Fig. 3b

a plan view of the triggering mechanism of Fig. 3a .

Fig. 3c

a side view of the trigger mechanism of Fig. 3a .

Fig. 4

a detailed perspective view of the release lever of Fig. 3a .

Figure 5

a plan view of the bridge side of a second embodiment of the gear train,

Fig. 6

a perspective view of the movement of Fig. 5 .

Fig. 7

a detailed view of the release lever of the Fig. 5 .

Fig. 8a

a detailed view of the trigger mechanism of the Fig. 5 in plan view,

Fig. 8b

a detailed view of the trigger mechanism of the Fig. 5 in sectional view,

Figure 9

a top view of the elevator mechanism in the position for adjusting the dials, some parts are transparent for ease of understanding,

Fig. 10a

a sectional view of Scheibenscheibe the one-minute lens, in particular in the upper part of the view, while in the lower part of the second gear chain for driving the digital display is partially visible,

Fig. 10b

a plan view of the coupling elements of the disc interlocking the one-minute slot,

Fig. 11

a top view of the elevator mechanism in two positions,

Fig. 12a

a detailed view of the blocking system in a position,

Fig. 12b

a detailed view of the blocking system in a further position,

Fig. 12c

a detailed view of a blocking system having an alternative embodiment of the blocking lever,

Fig. 12d

a detailed view of a blocking system having a further alternative embodiment of the blocking lever,

Fig. 13

a factory plan view of the elevator wheels,

Fig. 14a

a detailed view of the elevator mechanism in sectional view,

Fig. 14b

a detailed view of the elevator mechanism in an oblique view.

Detailed description of invention

Two embodiments of the invention will now be described in detail below with reference to the drawings.

A digital display 10 with a disc rotation drive and release system according to the present invention is intended for integration into a wristwatch. Like the Fig. 1a, 1b and 1c show, the digital display 10 comprises a one-minute disk 11, a ten-minute disk 12th and formed as an hour ring 13 hour disc. The axes of the one-minute disc 11 and the ten-minute disc 12 are arranged parallel to each other and inside the hour ring 13, these axes being perpendicular to the plane of the digital display. The Einmininutenscheibe 11 is formed at least two stages, the edge of its upper digit-bearing stage of the edge of the ten-minute disc 12 is opposite and the surfaces of the two discs 11, 12 lie in the same plane.

The three display discs 11, 12, 13 of the digital display 10 are connected to each other via a switching device, which is formed in this embodiment as a Maltese transmission. This is constructed as follows: The lowest stage of Einmininutenscheibe 11 carries a roller 15 which engages in the Maltese train on the underside of the Zehnerminutenscheibe 12 and this in the circuit of Einerminutenscheibe 11 from the numeral "9" on the digit "0", wherein a rotation of the Einmininutenscheibe 11 by 36 ° causes a rotation of the Zehnerminutenscheibe 12 by 60 °. Stand the display discs as in Fig. 1a shown, that is, just before the circuit of Zehnerminutenscheibe 12 from the numeral "5" to the numeral "0", then engages a pressed-in pin 16 Zehnerminutenscheibe 12 in the Maltese contour of Maltese intermediate wheel 14 and rotates this when switching the Zehnerminutenscheibe 12 of the numeral "5" to the numeral "0" through the Einmininutenscheibe 11, whereby a rotation of the Maltese intermediate wheel 14 is effected by 72 °. By the rotation of the Maltese intermediate wheel 14 slides one of the underside at regular angular intervals positioned rollers 17 of the Maltese intermediate wheel in the Maltese groove of the hour ring 13 and also switches this by one position, which corresponds to a rotation of the hour ring 13 by 30 °. The interventions of this Maltese transmission are in Fig. 1c shown in a position during the switching process. After completion of each switching operation, the respective locking radii 18 are the Maltese contours of the display discs 11, 12, 13 again opposite and hold the display discs of the digital display 10 in position. It should generally be noted here that the components 15, 16, 17 are executable both as rollers and as a pin, the choice depending on the available thickness of the associated disc stage. If the thickness is sufficient, it is preferred because of the better friction reduction execution as a role.

A first embodiment of a movement of a clock housing this digital display 10 will now be described below with reference to FIGS FIGS. 2 to 4 described. This plant has, on the one hand, a walking mechanism which comprises a first, conventional gear chain 20 and a first barrel 21, as is also used in an ordinary movement according to the prior art. In this movement, the force is transmitted from the first barrel 21 via gears with each attached drives, in particular a minute wheel 22, a Kleinbodenrad 23 and a second wheel 24, to an escapement 25 and a balance-spiral system 26 of the movement. In addition to the power transmission, this transmission chain would have the task of controlling the hands or other displays in the prior art. In contrast, has a clock mechanism according to the present invention, on the other hand, a rear derailleur, which includes a second transmission chain 30 and a second barrel 31 with associated transmission gear. These two transmission chains 20, 30 are interconnected by a trigger mechanism 40, wherein the first transmission chain 20 of the movement controlled by the release mechanism 40, the second transmission chain 30 of the derailleur every minute, timed via the balance-spiral system 26. This second transmission chain 30 transmits the power from the second barrel 31 in the form of a rotational movement of the display discs 11, 12,13.

In order to ensure a high tripping precision during the switching operations of the digital display 10 and at the same time to minimize the amplitude fluctuations in the balance control system 26 of the movement, in this embodiment the tripping mechanism 40, as in FIG Fig. 3a to 3c can be seen, a control disk in the form of a stepped disk 41 with thirty each having a step and a recess or gap portions having a total angular width of 12 °, wherein the stepped disk 41 is fixed to the axis of the minute wheel 22. The trigger mechanism 40 also has two in the Fig. 4 shown in a detailed view, pivotally mounted release lever 42, 43, each with two lever arms whose first lever arms are each directed by a release spring 46 against the circumference of the stepped disk 41 and rest with slight pressure on this. The release levers 42, 43 are offset relative to each other so positioned around the circumference of the stepped disk 41 that the ends of said first lever arms offset by half a pitch of the step plate 41 on this or engage in this, as in Fig. 3b is apparent. By this arrangement, it is possible to implement sixty actuations per hour with a 30-stage stepped pulley 41, which has the advantage that the stages can be made larger. The triggering mechanism 40 further has a trigger wheel 44 which is released or blocked by the second lever arms of the trigger levers 42, 43, depending on their location about the circumference of the stepped pulley 41.

The total angular width of 12 ° of the portions of the stepped pulley 41 may preferably be divided asymmetrically in order to further increase the reliability of the triggering mechanism 40. For example, the angular width of the in Fig. 3a and 3b illustrated stage preferably in the range 6.1 ° to 10 ° and that of the gap in the range 2 ° to 5.9 °, thereby ensuring that shortly before the start of the tripping operation, that is shortly before the fall of the first lever arm of the trigger lever 42, 43 in a gap of the stepped disc 41, the first lever arm of the other release lever 42, 43 has already assumed its final position on the stage. Of course, the above-mentioned angular width can be chosen differently depending on the configuration of the stepped disk 41. Furthermore, the release levers 42, 43 advantageously be designed so that their first and second lever arms, which preferably each correspond to a short - and a long lever arm, on both tripping levers 42, 43 are each the same length. Preferably, for each release lever 42, 43 also provided on the short lever arm an eccentric 45, which at the end of the triggering operation, that is, during the fall of the first lever arm of the release lever 42, 43 in a gap of the stepped disk 41, the opening of this first lever arm prevented at the bottom of the stepped disk 41. This makes it possible to reduce the wear on the probe tips of the release lever 42, 43.

During the normal course of the movement, the stepped pulley 41 continuously rotates with the minute wheel 22, with the first lever arms of the two release levers 42, 43 sliding over the surface of the outer periphery of the pulley 41. After every minute, the first lever arm of one of the release levers 42, 43 falls from the step disc edge into a gap of the stepped disc 41 and releases the trigger wheel 44 by means of its second lever arm. As a result, the second transmission chain 30 of the derailleur can rotate freely until the tooth of the trigger wheel 44 strikes the second lever arm of the other trigger lever 42, 43. Thus, the one minute pulley 11, which is preferably mounted directly on or in kinematical connection with a one minute wheel 36 of the second transmission chain 30 of the derailleur, rotates one step further, corresponding to a rotation of 36 ° and the next digit on the one minute pulley, respectively 11 can be visible in a window, not shown in the figures in the dial of the clock.

A second embodiment of a movement of a clock housing the digital display 10, which has a further improved triggering accuracy, will now be described below with reference to FIGS FIGS. 5 to 8b described. Similar to the movement of the previously described embodiment, according to the second embodiment, as in FIG Fig. 5 and 6 apparent, on the one hand a walking gear, which includes a first gear chain 50 and a first barrel 51. In this movement, the force from the first barrel 51 via gears with each attached thereto shoots, in particular via a below also referred to as Großbodenrad minute wheel 52, a Kleinbodenrad 53, an intermediate drive 54, a Kleinbodenzusatzrad 55, and a second wheel 56, an escapement 25 and a clockwork balance-spiral system 26 transmitted. Compared to a traditional gear train of a vehicle, the low-level gear 53 was supplemented with the Kleinbodenradtrieb attached thereto by a loosely mounted on the Kleinbodenradtriebes and therefore freely rotatable Kleinbodenzusatzrad 55. The wound barrel 51 is the force of its coil spring or tension spring as torque on the Großbodenrad 52 on the Kleinbodenradtrieb the Kleinbodenrads 53 on, so that the riveted on the axis of the Kleinbodenradtriebs Kleinbodenrad 53 is rotated. This in turn transmits the torque to the intermediate drive 54, which carries a control disk in the form of a cam 71 and transmits the torque to the loosely mounted on the Kleinbodenradtrieb Kleinbodenzusatzrad 55, which is in engagement with the second wheel of 56 seconds. From this point on, the torque transmission continues in a conventional manner to the escapement 25 and the clockwork balance control system 26.

In contrast to the trigger mechanism 40 according to the first embodiment of a movement according to the invention, in which the tap of the triggering time of the minute wheel 22, and the attached thereto Stage disc 41, takes place, the tap of the triggering time is carried out in the second embodiment of a movement according to the invention of the small bottom wheel 53 by the cam 71 is fixed to the meshing with the small-bottom wheel 53 intermediate drive 54. The available torque is slightly lower compared to the first embodiment of a movement according to the invention, but is sufficient and higher than the torque on the secondary 56th On the other hand, thereby advantageously the speed of the cam 71 of the second embodiment of a movement according to the invention, which in the stepped pulley 41 of the first embodiment is at one revolution per hour, be increased significantly to one revolution per four minutes, since the change of the gear train 50 by receiving the intermediate drive 54 and the loosely mounted Kleinbodenzusatzrads 55 changed and depending on the needs within certain limits selectable number of teeth or Translation is allowed on these wheels. The number of sections, each with a tooth and a recess on the cam 71 is accordingly selectable, wherein the cam 71 of the second embodiment of a movement according to the invention, as in Fig. 5 and 6 shown having two such sections. The mounted on the intermediate drive 54 cam 71 can therefore be directly and without play in the power flow of the first transmission chain 50 despite the advantageously increased speed.

Like the first embodiment of a movement according to the invention, a movement according to the second embodiment of the present invention, on the other hand, has a derailleur which, as in FIG Fig. 5 can be seen, a second transmission chain 60 and a second spring housing 61 with associated transmission gear comprises. The two transmission chains 50, 60 are interconnected by a triggering mechanism 70, wherein the first transmission chain 50 of the vehicle controls by means of the triggering mechanism 70, the second transmission chain 60 of the rear derailleur. This second transmission chain 60 transmits, analogous to the relevant Description of the first embodiment, every minute, clocked by the balance-spiral system 26, the force from the second barrel 61 in the form of a rotational movement to the Einerminutenrad 66 and thus to the display discs 11, 12, 13, which allows their gradual progression.

The release lever of the trigger mechanism 70 are designed analogous to those of the first embodiment and are designed as pivotally mounted release lever 72, 73, each with a first and a second lever arm, which preferably each correspond to a short and a long lever arm, with the difference that the axes of both levers are arranged coaxially. One of the release lever 72 is fixedly connected to an associated, serving as a pivot axis shaft and the other release lever 73 is loosely and freely rotatably mounted on the pivot axis and axially secured with a bush, as in Fig. 7 shown schematically. By this arrangement, in the trigger mechanism 70, instead of the two trigger springs 46 of the trigger mechanism 40 of the first embodiment of the movement, only one designed as a tension spring release spring 76 is required, which presses the release lever 72, 73 to the cam 71. In the assembled state of all components of the trigger mechanism 70 in the factory, this release spring 76 is always slightly biased, which ensures that the two release levers 72, 73 abut either on the cam 71 or on one of the trigger levers 72, 73 provided for each eccentric 75, as out Fig. 8a is apparent. As in the first embodiment, the eccentric 75 in this embodiment also have the task of sparing the stylus tips at the ends of the first lever arms of the two release levers 72, 73 and not let them strike the bottom of one of the recesses of the cam 71. By analogy with the division of the portions of the stepped disk 41 of the first embodiment, the pitch of the portions of the cam 71 may also be asymmetrically designed to ensure that shortly before the beginning of the Tripping operation, that is shortly before the fall of the first lever arm of the trigger lever 72, 73 of a tooth of the cam 71 in the subsequent recess, the first lever arm of the other release lever 72, 73 has reached its final position on the circumference of the cam 71 to To ensure the reliability of the trigger mechanism 70 in the same way. The triggering mechanism 70 further has a trigger wheel 74 which is released or blocked by the second lever arms of the release levers 72, 73, depending on their location around the circumference of the cam 71, and thereby, analogous to the above in connection with the second transmission chain 30th The first embodiment described causes, by means of the second transmission chain 60 of the derailleur, the gradual indexing of the dials 11, 12, 13 of the digital display 10.

In the following, the manually operable disc interlocking, which allows the manual adjustment of the position of the dials 11, 12, 13 of the digital display 10, based on the Fig. 9 . 10a and 10b described. The disc interlocking points as if Fig. 9 can be seen, a plurality, in each case serially meshing Zeigerstellräder 81, 82, 83, 84, 85, which are displaceable by an elevator shaft 77 in its pulled-out position by means of a Kupplungsstriebhebels 79 in motion on. The disc interlock can be operated by pulling the elevator shaft 77, whereby an angle lever 78 is rotated. The latter pivots the clutch drive lever 79 via its outer shape. The one end of the clutch drive lever 79 engages in the groove of a clutch drive 80. In the pulled-out position of the elevator shaft 77, the aforementioned parts take in Fig. 9 shown position, so that the hand wheels 81, 82, 83, 84, 85 can be rotated by manually rotating the elevator shaft 77 in rotary motion. The last pointer dial 85 is fixedly attached to the one minute disc 11 and these Assembly is loose and freely rotatable on the Zwischenradtrieb 86, which is part of the second transmission chain 30, 60 of the rear derailleur.

The journal of Zwischenradtriebs 86 is as out Fig. 10a or 8b, formed at the end as a form fit and includes a threaded hole, these two elements are used to attach a star 87, which limits the height clearance of Einerminutenscheibe 11, the Zwischenradtrieb 86 and index. The star 87 has ten teeth. As in 10a and 10b shown, on the Einerminutenscheibe 11 also a detent spring 88 is fixed, for example screwed with screws 90, wherein the detent spring is formed conjugate to the shape of the star 87 and consists of several, combined in one component functional parts. This detent spring 88 can be rotated by a certain angle by means of an eccentric 89, which is pressed onto the Einerminutenscheibe 11. By the interaction between the star 87 and the detent spring 88, the Einerminutenscheibe 11 is aligned exactly in the dial window on the one hand. On the other hand, the star 87 and the detent spring 88 form a frictional coupling, which in the presence of a higher force than the detent spring force allows a relative adjustment in ten steps between the Zwischenradtrieb 86 and fixedly attached to the Einerminutenscheibe 11, Last Zeigerstellrad 85. For the sake of completeness, it should be noted at this point that both the intermediate gear drive 86 and the pointer actuating wheel 85 are noisy with the one described in the above description of the two embodiments of the movement Fig. 2 , respectively loud Fig. 5 , part designated as Einmininutenrad 36, 66 can be functionally equated.

Once the elevator shaft 77 is rotated in its pulled-out position, is above the above and in the Fig. 9 shown gear chain from the elevator shaft 77 via the Kupplungsstrieb 80 and the Zeigerstellräder 81, 82, 83, 84, 85 the Einmininutenscheibe 11 is set in a rotational movement. In this case, the detent spring 88 jumps from one tooth gap of the star 87 to the next, so that the desired time can be set. As soon as the rotation of the elevator shaft 77 is stopped at any time, the detent spring 88 slides into the nearest gap of the star 87. The disc interlock including the clutch consisting of the star 87 and the detent spring 88 is designed to set the time in both directions.

Preferably, the disc interlocking further comprises a blocking device, wherein a corresponding embodiment of the device now based on the Fig. 11 . 12a and 12b is described. During the adjustment of the clockwise time, a torque acting in the direction of rotation of the second transmission chain 30, 60 of the derailleur, this rotational movement, as is apparent from the above description of the movement, is blocked by one of the two release levers 72,73. But if the clock is set counterclockwise, the torque acts against the direction of rotation of the wheels in the second transmission chain 30, 60 of the derailleur, which would rotate the entire gear backwards, which could cause damage in the trigger mechanism. In order to prevent this, the disc interlocking preferably has a special device which blocks the Zwischenradtrieb 86 in a counterclockwise clock setting. This locking device has a pivotable from the clutch drive lever 79 stop lever rocker 91, at its two free ends a pin 92, 96 is mounted, one of the stop lever rocker 91 acted upon the balance of the clock stop spring 93, and a movably mounted and displaceable by the stop lever rocker 91 blocking lever 94, wherein a toothing 95 of the blocking lever 94 depending on its position in the teeth of the Zwischenradtriebs 86 engages and the latter, as in Fig. 12a visible, blocked or, as in Fig. 12b visible, releases. Are, as previously described, the Elevator shaft 77 pulled out and moved all parts accordingly, the stop lever rocker 91 is additionally set in the presence of the blocking device via the clutch drive lever 79 in a rotary motion. By this movement of the stop lever rocker 91 is pressed by means of the at one of their free ends, in Fig. 11 visible pin 92, the stop spring 93 is bent against the balance, so that the balance is stopped. At the same time causes the pressed at the opposite free end of the stop lever rocker 91 pin 96 upon movement of the stop lever rocker 91, a linear displacement of the movably mounted and hinged to said pin 96 blocking lever 94. The linear path of the blocking lever 94 is designed so that its fine teeth 95 in the Teeth of the Zwischenradtriebs 86 engages and blocks it against any further rotation, so that the second transmission chain 30, 60 of the rear derailleur at a reverse rotation of the elevator shaft 77 can rotate only minimally. On the other hand, if the stop lever rocker 91 is in its normal, undeflected position, both the balance wheel and the intermediate wheel drive 86 are freely pivotable or rotatable. At this point it should be noted that the configuration of the blocking lever 94 can be adapted according to the power ratios and the blocking lever 94, for example, as in Fig. 12c represented, only a projection or, as in Fig. 12d shown, an elastic leaf spring without teeth, which in the blocking position of the blocking device rests on the teeth of the Zwischenradtriebs 86 may have.

After explaining the structure of the disc interlocking, the elevation of the barrels 21, 31, 51, 61 will be explained below for the completeness of the description of the present invention by means of the figures 13, 14a and 14b. The two barrels 21, 31, and 51, 61 of the movement and the derailleur of the movement are mounted as follows. By turning the elevator shaft 77 in its non-pulled position of the clutch drive 80th taken over a square of the elevator shaft 77, wherein the clutch drive 80 transmits this rotational movement via its locking teeth on the elevator drive 97. This will turn, as in Fig. 13 shown schematically, all other, serially meshing elevator wheels 98, 99, 100, 101, 102, 103, 104, wherein the two elevator wheels 103 and 104 are connected by means of positive engagement with the barrels 21, 31, 51, 61. The manual wind has only a locking cone 105, which is rotated by a spring 106 against a ratchet wheel 107, as in Figs. 14a and 14b is apparent. The locking cone 105 prevents the first spring 21, 51 from tensing again, whereby the second barrel 31, 61, since it is connected via the elevator wheels 102, 103, 104 with the barrel 21, 51, is also locked on the locking cone 105 ,

The barrels 21, 31, 51, 61 are preferably designed so that they, even in the case of the same length spiral or tension springs in the first - 21, 51 and the second barrel 31, 61, run at different speeds and therefore not the same speed have, in particular such that the second barrel 31, 61 has a lower speed than the first barrel 21, 51 has. This can ensure that there is always enough force on the second barrel 31, 61 to switch the indicator discs 11, 12, 13 of the digital display 10 until the watch has reached its power reserve. Thus, the clock, respectively the barrels 21, 31, 51, 61, can always be fully wound up, it has two elevator springs with a known to those skilled Gleitbride. Optionally, the first barrel 21, 51 can also be provided with a spiral or tension spring with a fixed stop for a manual winding.

Finally, it should be expressly pointed out at this point that the above-described two embodiments of a skilled in the watchmaking expert can be simplified to the effect that instead of a first - 21, 51 and a second barrel 31, 61, each serving as its own energy source for the Geh-, respectively the rear derailleur, only a single barrel is used, which serves as the sole source of energy for the entire gear train of the so simplified movement. The resulting third and fourth embodiment of a movement according to the invention, which, according to the above, have a trigger mechanism controlled either by means of a stepped disc 41 mounted on the minute wheel 22 or by means of a cam disc 71 mounted on the additional intermediate wheel 54 Therefore, in view of the above description, no further explanation and are not shown in the accompanying drawings, without affecting the extension of the present invention also to these embodiments.

A timepiece according to the present invention has a number of advantages. The trigger mechanism of a movement according to the invention consists in particular only of a control disk, two release levers, each with a first and a second lever arm, and a tripping wheel, wherein the control disk is mounted on an additionally mounted in the first transmission chain intermediate drive, resulting in a simple and space-saving design and leads to a safe functional sequence. In the case of the preferred use of two barrels in the movement, these ensure a safe transfer until the end of the power reserve of the clock, the trigger mechanism realizes a secure control of the derailleur through the movement. Any amplitude fluctuations in the balance-spiral system are thereby kept low. The associated disc interlocking, which has a simple coupling between the Zwischenradtrieb and the Einmininutenscheibe, allows safe adjustment of the clock in both directions and can be optionally equipped with a blocking device of Zwischenradtriebs, which blocks when setting the clockwise counterclockwise said Zwischenradtrieb. Furthermore, the Lifting device robust, can be implemented in a relatively simple manner, and is characterized by a safe operation. The arrangement of the axes of the one-and ten-minute disc parallel to each other and inside the hour ring realizes an aesthetically pleasing, digital time display for mechanical watches and grants a degree of freedom in the arrangement of the clock display on the clock dial. LIST OF REFERENCE NUMBERS No. component 10 Digital display 11 One minute disc 12 Ten minutes disc 13 hour ring 14 Malteserzwischenrad 15 Roll (on one minute's disk) 16 Pen (in ten-minute slice) 17 Castors (on Maltese wheel) 18 Locking radii on the Maltese contours 20 First gear chain (movement) 21 First barrel (movement) 22 minute wheel 23 Third wheel 24 Third wheel 25 inhibition 26 Sprung balance system 30 Second gear chain (rear derailleur) 31 Second barrel (rear derailleur) 36 Einerminutenrad 40 trigger mechanism 41 Step disc (on minute wheel) 42 sear 43 44 release wheel 45 eccentric 46 Release springs (torsion spring) 50 First gear chain (movement) 51 First barrel (movement) 52 Large driving wheel 53 Third wheel 54 intermediate drive 55 Kleinbodenzusatzrad 56 Third wheel 60 Second gear chain (rear derailleur) 61 Second barrel (rear derailleur) 66 Einerminutenrad 70 trigger mechanism 71 Cam (on intermediate drive) 72 sear 73 74 release wheel 75 eccentric 76 Release spring (tension spring) 77 Elevator shaft 78 bell crank 79 Sliding pinion lever 80 Sliding pinion 81 intermediate wheel 82 intermediate wheel 83 intermediate wheel 84 intermediate wheel 85 Pointer dial (attached to one minute slot) 86 Zwischenradtrieb 87 star 88 detent spring 89 eccentric 90 screw 91 Stop lever rocker 92 Pin (for stop spring of the balance) 93 arresting spring 94 blocking lever 95 Teeth of the locking lever 96 Pen (for blocking lever) 97 Winding pinion 98-102 Aufzugrad 103 Elevator wheel (under barrel 51) 104 Elevator wheel (under barrel 61) 105 locking cone 106 Spring (for locking cone) 107 ratchet wheel

Claims (15)

Watch, in particular a wristwatch, having a digital display (10) having a one-minute window (11), a ten-minute dial (12), and an hour-dial ring (13), as well as a clockwork with a balance-spiral system (26) and with a gear train a one-minute wheel (36, 66) of the one-minute disc (11) is rotatably indexable in cyclic steps with ten steps per revolution, and with a switching device by which the ten-minute disc (12) is rotatably indexable with six steps per revolution, wherein the hour numerical ring ( 13) during a revolution of Zehnerminutenscheibe (12) of the Zehnerminutenscheibe (12) with twelve steps per revolution rotatable drehschaltbar, and with a manually operable disc interlocking, wherein the movement at least a first barrel (21, 51), a first transmission chain (20 , 50) and a second transmission chain (30, 60), both transmission chains having a triggering mechanism (40, 70) and the first transmission chain (20, 50) controls, by means of the release mechanism (40, 70), the second transmission chain (30, 60) such that the second transmission chain is cycled every minute, via the balance-spring system (26). of the movement, a force in the form of a rotational movement of the Einerminutenrad (36, 66) transmits, characterized in that the manually operable disc interlocking, each serially meshing Zeigerstellräder (81, 82, 83, 84, 85), which by an elevator shaft (77) are displaceable in their pulled-out position by means of a Kupplungsstriebs (80) in motion, wherein the last Zeigerstellrad (85) with the Einerminutenscheibe (11) is firmly connected and from the last Zeigerstellrad (85) and the Einerminutenscheibe (11 ) existing assembly loosely and freely rotatably on a Zwischenradtrieb (86) sits, which is part of the second transmission chain (30, 60), and in that a star (87) is coaxially fixed to the idler gear (86) and a conjugate shaped detent spring (88) is mounted on the one minute disc (11) to align the one minute disc (11) in a dial window the clock and in the presence of a higher force than the detent spring force to allow a gradual engagement and disengagement between the Zwischenradtrieb (86) and the Einerminutenscheibe (11). Clock according to claim 1, characterized in that it comprises a blocking device of the Zwischenradtriebs (86), which blocks when setting the clockwise counterclockwise said Zwischenradtrieb (86) has. Timepiece according to claim 2, characterized in that the blocking device comprises a stop lever rocker (91) pivotable by a clutch drive lever (79), at each of whose two free ends a pin (92, 96) is mounted, one of the stop lever rocker (91) on the balance the clock acted upon stop spring (93), and a movably mounted and from the stop lever rocker (91) slidable blocking lever (94), wherein the blocking lever (94) depending on its position in the teeth of the Zwischenradtriebs (86) engages, respectively the Zwischenradtrieb (86), thereby blocking or releasing the idler gear (86). Clock according to one of the preceding claims, characterized in that the trigger mechanism (40, 70) comprises a control disc (41, 71), two trigger levers (42, 43, 72, 73) each with a first and a second lever arm, and a trigger wheel (40). 44, 74), wherein the first lever arms of the two release levers (42, 43, 72, 73) are positioned offset and with pressure on the circumference of the control disc (41, 71) rest such that after every minute of the first lever arm the release lever (42, 72; 43, 73) from the control wheel edge into a recess of the control disk (41, 71) falls and the second lever arm of this release lever (42, 72, 43, 73) the release wheel (44, 74) of the release mechanism (40, 70) releases, so that the second gear chain (30, 60) rotates freely until a tooth of the trigger wheel (44, 74) abuts the second lever arm of the other trigger lever (43, 73, 42, 72), wherein the Einerminutenrad (36, 66) and the Turn one minute slot (11) one step further. Timepiece according to Claim 4, characterized in that the control disk is in the form of a step disc (41), and in that the first transmission chain (20) has a minute wheel (22), a low-order wheel (23) and a second wheel (24), 41) is attached to the axis of the minute wheel (22). Clock according to Claim 5, characterized in that the step disc (41) has thirty sections each having a step and a gap with a total angular width of 12 ° each. Clock according to Claim 6, characterized in that the total angular width of the sections of the step disc (41) is divided asymmetrically, in particular that the angular width of the step in the range 6.1 ° to 10 ° and that of the gap in the range 2 ° to 5.9 ° is. Timepiece according to one of claims 6 or 7, characterized in that the first lever arm of one of the trigger levers (43) is positioned offset from the first lever arm of the other trigger lever (42) by a half pitch of the portions of the stepped pulley (41). Clock according to Claim 4, characterized in that the control disk is designed as a cam plate (71), and in that the first gear chain (50) has a large-diameter wheel (52), a small-diameter wheel (53) with a low-order wheel drive firmly attached thereto, one with the small-diameter wheel ( 53) intermeshing intermediate drive (54), a loose and freely rotatable mounted on the Kleinbodenradtrieb Kleinbodenzusatzrad (55), which is in engagement with the intermediate drive (54), as well as one of said Kleinbodenzusatzrad (55) driven second wheel (56), said Cam plate (71) on the axis of the intermediate drive (54) is attached. Timepiece according to claim 9, characterized in that the intermediate drive (54) is arranged laterally on the circumference of the low-floor wheel (53) and the low-floor auxiliary wheel (53, 55) for transmitting the torque from the low-floor wheel (53) to the low-floor auxiliary wheel (55). Clock according to one of claims 9 or 10, characterized in that the division of the sections of the cam disc (71) is made asymmetrical. Clock according to one of the preceding claims 4 to 11, characterized in that an eccentric (45, 75) is provided for each trigger lever (42, 43; 72, 73), which at the end of the triggering operation, the striking of these trigger levers (42, 43; 72, 73) on the bottom of the recesses of the control disc (41, 71) prevented. Timepiece according to one of the preceding claims, characterized in that it comprises only a single energy source in the form of the first barrel (21, 51) which energises both the first gear chain (20, 50) and the second gear chain (30, 60) provided. Clock according to one of the preceding claims 1 to 12, characterized in that it comprises a second barrel (31, 61), wherein the first barrel (21, 51) energizes the first gear chain (20, 50) and the first gear chain (20, 50) forms a walking mechanism and the second barrel (31, 61) supplies the second gear chain (30, 60) with energy and forms a switching mechanism with the second gear chain (30, 60). Clock according to claim 14, characterized in that the second barrel (31, 61) has a lower rotational speed than the first barrel (21, 51) and the barrels (21, 31, 51, 61) have two winding springs with a sliding.

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