EP0083307B1 - Elektronische Chronographuhr - Google Patents

Elektronische Chronographuhr Download PDF

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Publication number
EP0083307B1
EP0083307B1 EP82810556A EP82810556A EP0083307B1 EP 0083307 B1 EP0083307 B1 EP 0083307B1 EP 82810556 A EP82810556 A EP 82810556A EP 82810556 A EP82810556 A EP 82810556A EP 0083307 B1 EP0083307 B1 EP 0083307B1
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EP
European Patent Office
Prior art keywords
time
display
counting means
watch
motor
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.)
Expired
Application number
EP82810556A
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English (en)
French (fr)
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EP0083307A1 (de
Inventor
Albert Piguet
Jean-Daniel Dubois
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Nouvelle Lemania SA
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Nouvelle Lemania SA
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Publication of EP0083307A1 publication Critical patent/EP0083307A1/de
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F8/00—Apparatus for measuring unknown time intervals by electromechanical means
    • G04F8/006—Apparatus for measuring unknown time intervals by electromechanical means running only during the time interval to be measured, e.g. stop-watch
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/008—Mounting, assembling of components
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • G04C3/146—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor incorporating two or more stepping motors or rotors
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/08—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques
    • G04G9/085—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques provided with date indication

Definitions

  • chronograph watches with mechanical drive generally have a central seconds hand, which when the chronograph is in motion is coupled to the train and therefore advances step by step at the frequency which is given by the balance-spring system c . generally at a frequency of 18,000 vibrations per hour.
  • this hand moves on a dial of the order of 25 to 30 mm in diameter, the movement of its point step by step on the hour turn is easily readable, so that this hand allows a period of time to be read which was measured by the chronograph device with an accuracy of one fifth of a second.
  • the balance-spring system has a frequency of 36,000 vibrations per hour
  • the chronograph second hand even makes it possible to read the period of time which has been measured with an accuracy of one tenth of a second.
  • an electronic chronograph whose time base is quartz and includes a frequency divider which supplies signals at a frequency suitable for driving a stepping motor operating a cog of time display, an intermediate output to the frequency divider in order to have an intermediate signal at a frequency which is at least of the order of 10 Hz,
  • This signal is dioised separately up to a frequency that it is convenient to choose at a value of 1 Hz to match a stepping motor driving a display mechanism comprising a chronograph second hand and if necessary, a totalizer of the minutes and a lotaiizer of the hours.
  • the use of a stepping motor actuated at a frequency of 1 Hz is compatible with the lifespan of the batteries likely to be housed in the chronograph watch case intended to be worn as a bracelet, and the drive two such motors can be supplied with a power source of suitable capacity.
  • the time periods measured by the chronograph device cannot be known with an accuracy greater than one second.
  • the aforementioned US patent also provides an intermediate output to the auxiliary frequency divider and the driving of a third motor at a frequency which may be greater than 1 Hz.
  • the chronograph display device will include a seconds hand jumping step by step at the rate of 1 Hz, plus a needle for measuring fractions of a second.
  • the complication of such a system is a serious obstacle to its commercial realization.
  • the chronograph motor is driven by pulses which leave the counting circuit at a frequency of 10 Hz.
  • the hand central seconds which is part of the chronograph display mechanism, is driven at a rotation speed of 10 times normal speed, so that it makes one revolution over the dial in 6 seconds.
  • the chronograph motor is driven at a frequency of 1 Hz and activates a central seconds hand which jumps from an angle 6 ° at each step of the engine, while the drive motor of the current time display device is normally driven at a frequency of 1/6 Hz or one step every 6 seconds and actuates a hand small seconds shifted on the dial and making a revolution in one minute at the rate of ten jumps per minute.
  • the intermediate counter which controls the chronograph engine is associated with a memory and connected to the current time display engine so that, when the chronograph engine is blocked after measuring a period of time, the content of the intermediate counter is compared with the position of the small second hand and the current time display engine receives a number of pulses such that the position of the small second hand indicates the tenths of seconds of the period of time that has just been measured.
  • the publications GB-2,005,875 and EP 00 70 052 also describe electronic timepieces whose counting and display mechanisms are arranged to count and display periods of time timed by the operation of push buttons.
  • the second of these publications is part of the state of the art only by virtue of art.
  • the devices described in these documents include electronic zero return means driving the display motor or motors by means of a train of pulses at high frequency, towards the zero position. However, the return of the needles can hardly be as rapid as in the hammer mechanism shown.
  • patent UA 3,945,191 describes a watch in which part of the display means is constituted by hands driven above a dial by means of a stepping motor, while another part capable of display the seconds or the date is constituted by a liquid crystal display cell.
  • the present invention relates to an electronic chronograph watch comprising electronic counting means supplied by signals from a time base and producing, at time intervals which are determined by counting, control signals from a stepper motor, shows in which the said motor comprises a rotor connected to a gear train of reduction of which at least two mobiles are connected by couplings to indicator members and in which a zero return function is performed by a on the one hand by a mechanical action exerted on said indicator bodies bringing them back into a reference orientation, and on the other hand resetting the counting means to zero, differs from this technical art by the fact that it comprises means for blocking said gear train, arranged so as to be in the blocking position during said mechanical action, said couplings being friction couplings and the rotor d u motor being held by the locking means when the counting is reset to zero in the position reached with its last step.
  • the present invention also relates to an electronic chronograph watch comprising a stepping motor, electronic means for counting time periods capable of driving the said motor, a speed reduction gear formed of a plurality of mboiles including a movable primary is a pinion secured to the motor rotor and at least two other mobiles are drive mobiles, at least two chronograph display members, each mounted coaxially with one of the drive mobiles, and a control mechanism comprising two pushers and capable of controlling under the action of a first pushbutton the switching on and off of the motor and under the action of the second pushbutton the return to zero of the display members by means of at least two hammer elements acting on heart-shaped cams integral with said display members, characterized in that each of said display members is connected to the corresponding drive mobile by a friction coupling, in that the hammer elements are arranged so as to act simultaneously on each of said cams and in that the control mechanism further comprises a braking device capable of blocking one of the moving parts of the train gear and now the latter and the motor stationary during the
  • the invention also consists of an electronic chronograph watch comprising a manual access control device, a time base, permanent counting means and intermittent counting means, connected to each other. at the time base, the first permanently and the second under the action of the control device, and two display devices associated with the counting means, shows in which each display device comprises at least one stepping motor and several rotary indicator members, and in which the control device comprises switching on and off means and reset means capable of acting on each other on the inter counting means mittents, characterized in that the reset means comprise a hammer mechanism acting on heart-shaped cams integral with said indicator members and on a reset contact of said intermittent counting means, in that each of the said display devices comprises a single stepping motor driving a gear train and driven at time intervals determined by output signals from the counting means by which it is driven, and in that the device display connected to the intermittent counting means further comprises an auxiliary display element of the electro-optical type capable of displaying time units whose duration is a submultiple of said time intervals and reset to zero by resetting
  • the block diagram in fig. 1 shows the general design of the chronograph watch.
  • the time base 1 comprises a quartz Q, an oscillating circuit Osc and a first frequency division stage D.
  • the frequency of the time base is reduced to the value of 1.024 Hz.
  • These signals are transmitted in parallel to two division chains. First, they supply the frequency divider 2, the output signal of which is at a frequency of 1 Hz, and is transmitted to the shaping circuit 13 which controls the drive of the watch motor 14.
  • This motor is a stepper motor. step taking one step per second and causing a gear train which includes the 24 h 15 wheel which is fitted with a contact which closes once every 24 h at midnight in order to produce CM pulses
  • the pulses at 1.024 Hz are on the other hand transmitted to the divider 3 which precedes a switch circuit 5.
  • the divider 3 consists of an inhibitor element 3a controlled by an inhibition command 3a and the output of which has a frequency of 1,000 Hz and of a divider circuit proper 3b has three stages of divisions by ten whose output constitutes a signal at a frequency of 1 Hz. This output signal feeds the shaping circuit 11 which controls the chronograph motor 12.
  • a intermediate output of the divider per thousand 3 conveys signals at a frequency of 100 Hz which are transmitted to a switching circuit 8 so that when the chronograph is started, these signals are then transmitted to the decoder Dec which controls a digital display device liquid crystal 9 consisting of two cells each displaying the digits from zero to nine by means of a seven-segment display.
  • An output CK of the divider 2 conducts signals of different frequencies obtained by successive divisions by two from the input signal at 1.024 Hz in order to carry out the control of the different functions. These signals are transmitted in particular to a control circuit C which comprises input terminals 7, 10, 6 and 18 each connected to a contact element which can be grounded by the action of pushers 32, 33 or by the action of a crown 31 fixed to the end of a control rod housed radially in the movement.
  • the signal created by the earthing or disconnection of the contact element 7 is used for switching on and off the switch 5 for starting and stopping the chronograph motor 12.
  • the signal created at contact element 10 causes the divider per thousand to return to zero 3.
  • the signal created at contact 6 is used to block the control circuit 13 and therefore stop the watch motor 14.
  • a signal R returns to zero the frequency divider 2.
  • the signal created on the contact 18 causes signals to be emitted at a frequency of 1 second which appear after 2 seconds of waiting and which are taken to circuit 16 which is a date counter.
  • the CM signals created by the 24-hour wheel 15 are also transmitted to this date counter which, when the chronograph is not started, feeds the Decet decoder which controls the display of the date on the display device digital 9.
  • the control of circuit 8 digesting on the decoder Dec the signals coming from the intermediate output of the divider 3 or those coming from the date counter 16 is effected by the action of signals coming from circuit C sounds the effect of the signals input obtained at contacts 7 and 10.
  • Fig. 2 gives a general view of the chronograph watch.
  • the housing 19 contains all of the mechanisms and circuits which will be described later. It shows the dimensions of a wristwatch. Under the glass 20, we see a dial 21 appear above which move three chronograph hands and four watch hands.
  • the chronograph hands are the central seconds hand 22, the minute register hand 23, also worn in the center of the dial, and the hour register hand 24 which is shifted around 6 o'clock and which rotates above one hour tour of reduced dimensions 25 by performing one tour in 12 hours.
  • Watch hands include try a small second hand 26 shifted to 9 o'clock and turning over an hour tower 27 graduated in 60 seconds, a minute hand 28, an hour hand 29, these two hands being common needles brought to the center of the dial and a 24-hour clock hand, 30 hours, which is offset by 3 hours from the center and which rotates above a 24-hour hour turn.
  • the digital display element 9 With two display positions which is visible in a window on the dial and normally displays the date.
  • the case 19 carries on the 3 o'clock side a crown control rod 31, a chrono start and stop push-button 32 and a zero return push-button 33.
  • the embodiment described can be carried out in two variants: In a first variant, (fig. 3) the pusher 33 is blocked while the stopwatch is running, while in a second variant, the pusher 33 is not blocked so that the 'we can do a zero recall "on the fly", that is to say without having blocked the time before. We know that this possibility of calling back to zero "on the fly” is particularly interesting for airline pilots during landing maneuvers.
  • the counting of hundredths of a second, in the chronograph function could be provided in such a way that if the reset push-button is pressed before being pressed on the stop button so while the stopwatch is running, the display of the hundredth of a second is blocked for a few moments, then catches up with its normal counting. This would allow reading an intermediate time on the digital display.
  • the movement of the chronograph watch described comprises a circuit-carrying plate 34 which is visible in FIG. 3. This plate is housed in the movement of the watch. It is connected to another printed circuit element which is carried by the plate and placed under the electro-optical display cell 9.
  • the circuit-carrying plate 34 carries all the electronic elements of the movement. Its main member is the integrated circuit chip 35 which is fixed on one of its faces and the different output terminals of which are connected to conductive strips printed on its surface.
  • the plate 34 carries the quartz 36, located on its reverse, the adjustment trimmer 37 placed next to the circuit 35, a battery flange 38 and the four contact elements 6, 7, 10 and 18.
  • Each of these elements is consisting of a small gold plate cut and folded, part of which is welded to the plate 34 while the other part forms a straight line which extends freely so that a mobile element connected to ground can come in contact with it during certain operations of the control mechanism, as will be seen below.
  • These movable elements are a rod 39 parallel to the axis of the watch for the contact 7, a rod 40 similar to the rod 39, for the contact 10, a beak 41 of the pull tab 42 for the contact 6, and a beak 43 of flip-flop 44 for contact 18.
  • FIG. 4 shows the general arrangement of the lower part of the movement, that is to say of the part which is furthest from the dial. It is in this part of the movement that the stepper motors 12 and 14 are located and the cogs for driving the different hands. All of these elements are mounted on a plate 45 of circular shape which bears motively the two motors 12 and 14.
  • These stepping motors do not need to be described in detail. They are of a known and proven type in the manufacture of watches with analog display. A robust motor construction will be used with a sufficiently large motor torque to actuate the cogs described, for example motors whose rotor rotates 180 ° every second.
  • the rotor 46 of the first stepper motor 12 drives the chronograph train.
  • This first comprises a chain of three mobile reducers 48, 49 and 51 the last is a reference which attacks the mobile of second time 73.
  • a mobile 50 in engagement with the wheel of the mobile 49 drives the mobile minutes 76 (fig. 7) of the stopwatch. All the mobiles of this train are supported by a chronograph bridge 52 fixed under the plate, as will also be seen in FIGS. 6, 7 and 8.
  • the rotor 47 of the second motor 14 drives a reduction gear train with three mobiles 53, 54 and 55, the second mobile 54 of which is an eccentric second mobile, while the pinion of the third mobile 55 drives a minute wheel 63 carrying the hand 28 (fig. 5).
  • the battery 56 which constitutes the power source of the watch.
  • the dimensions of this battery are sufficient to ensure the autonomy of the chronograph watch described for a period of 1 year depending on the frequency of use of the chronograph.
  • the control mechanism is shown in fig. 4.
  • the rod 57 which carries the crown 31 is arranged radially in the movement and controls a conventional pull tab 42, already shown in FIG. 3.
  • This zipper cooperates with a zipper spring 58 cut in one piece with the rocker 44, which controls a sliding pinion 59 moving on a square of the rod 57.
  • the rod 57 has three positions: a neutral interior position, an intermediate position in which the lug 60 of the pull tab 42 enters a deep notch in the lever and the latter moves outwards, so that the spout 43 is in contact with the contact blade 18. (fig.
  • This intermediate position is therefore a date correction position and successive pulses are then emitted by the electronic circuit 16, in order to advance the date digit, for example one unit per second after a delay of a few seconds.
  • the lug 60 of the zipper moves the rocker towards the inside of the movement, so that the pinion 59 engages with a time setting reference 85 (fig. 5). It is therefore possible to set the watch hands to normal time by turning the crown 31.
  • the beak 41 of the pull tab is in contact with the contact blade 6.
  • This switch therefore functions as a second stop contact and causes the engine 14 to stop.
  • the retention torque of this engine is sufficient to block the moving parts of the train during the time setting.
  • Fig. 4 also shows brakes acting on different mobiles. We will return later to these elements of the control mechanism.
  • the plate 45 is also visible in FIG. 5, as well as the chronograph bridge 52 and the gear train bridge 61.
  • the rotor 47 of the motor 14 as well as the stator of this element and the motor pinion in engagement with the wheel of the mobile 53.
  • the mobile 54 small second comprises an elongate shaft through the entire cui m l uvement and carries the needle 26 of second.
  • the intermediate mobile 55 pivots between the bridge 61 and an intermediate bridge 62 placed on the plate 45.
  • Its pinion attacks the minute wheel • 63 which is frictionally mounted on a pavement 64 pivoting itself, on the one hand, in the plate 45 and on the other hand inside the barrel of a mobile 65 which carries the minute register hand 23.
  • the friction between the wheel 63 and the road 64 must be less than the retention torque of the engine 14 , so as to allow time setting of hands 28 and 29 without moving hand 26.
  • the pinion of the roadway 64 drives a timer wheel 66 which pivots on a rod 67 fixed in the plate and drives the hour wheel 68 coaxial with the mobile 65.
  • the periphery of the wheel 68 is also engaged with an intermediate mobile (not shown in Fig. 5) which activates the mobile 69, 24-hour hour indicator.
  • This mobile pivots between the intermediate bridge 62 and a mechanism cover 70.
  • the mobile 69 carries a rotary contact element 69a which cooperates with a fixed element so as to constitute the switch 15 (fig. 1) capable of counting the days.
  • Figs. 6 and 7 now show the most important elements of the chronograph mechanism.
  • the motor 12 is not shown in this figure, nor the mobile 48.
  • the mobile 49, the reference 51 and the second stopwheel which consists of a shaft 71 carrying a heart 72 and, at its upper end, the needle 22, and a drive pinion 73 which is frictionally coupled to the shaft 71 by a foil-shaped spring 74.
  • the wheel of the mobile 50 can be seen, also visible in FIG. 7.
  • the mobile 50 pivots between the bridge 52 and the plate 45. It carries a drive pinion 75 whose toothing is located above the intermediate bridge 62 and which meshes with the wheel 76 of the mobile minute recorder.
  • the latter mobile comprises a shaft 65, the lower part of which forms a heart 65a and a pinion 78 driven over a bearing surface located above the heart 65a.
  • a tinsel-shaped spring 79 armed between the wheel 76 and the pinion 78 constitutes a friction coupling between these two elements of the mobile minute register.
  • This friction coupling makes it possible to return the hands to zero without the gear train and the rotor of the motor 12 being driven in rotation.
  • blocking brakes are also provided, as will be seen below, to keep the mobiles of the chrono train stationary when the engine 12 is stopped. These brakes also have the function of suppressing the antics of learning.
  • the pinon 78 drives an intermediate timer wheel 80 mounted on a lug 81 and the pinion of which drives a wheel 82 frictionally coupled by means of a lamella 83 to a shaft 84, the latter carrying the hour-recording hour hand on the dial 6h designated by 24.
  • the heart 84a secured to the shaft 84 cooperates with a hammer, as will be seen below, in order to allow the return of the hour hand to zero.
  • time setting reference 85 is mounted on a fixed pin 86.
  • this mechanism comprises a wolf tooth wheel 87, with a cam 88, an engagement and stop lever 89 intended to be actuated by the pusher 32 and provided with an articulated hook 90, a set of hammers 91 and 92 which is actuated by the pusher 33, a control lever 93 which is actuated by the cam 88 and a set of two brakes 94, (fig. 8 and 4) which act respectively on the wheel 76 of the mobile mintue recorder 65 and on the pinion 73 of the chrono probe 71 mobile.
  • the hammers 91 and 92 are articulated to each other and controlled by the pusher 33.
  • the hammer 91 has a first active edge 91a which acts on the heart 84a of the mobile 84 during return movement to zero and a second active edge 91 which is on an arm of the hammer 91 cut so as to have a certain elasticity with respect to the rest of the part.
  • This edge 91 b cooperates with the color 65a integral with the mobile 65.
  • the second hammer 92 has an edge 92a which presses on the core 72 to return the mobile 71 to its zero position during the return movement to zero controlled by the push-button 33.
  • the operation of the stopwatch is therefore an absolutely classic operation.
  • the position shown in fig. 8 represents a walking position. All the contacts are open and all the brakes and all the hammers are removed from the mobiles with which they cooperate. Pressing the pusher 32 rotates the cam wheel 87 one step counterclockwise in FIG. 8, so that the rear spouts of the levers 93 and 94 moved par.les support springs 97 and 98 pivot opposite a hollow of the cam 88.
  • the rod 39 earths the contact 7.
  • the brake 94 comes to rest on the rove 76 and the brake 95 released by the rod 39 (see fig. 4) comes to rest on the pinion 73.
  • the positions reached by the chrono mobiles are therefore blocked in order to allow reading, while that the device 9 makes it possible to read the hundredths of a second.
  • the intermediate frame element 62 shown in FIG. 7 as a bridge capable of guiding certain mobiles comprises an elastic blade 62a which cooperates with a pin secured to the hammer 91 in order to reinforce the action of the pusher 33 at the time of the zero return operation.
  • a new pressure on the pusher 32 again advances the column wheel 87 by one step, which brings the levers 93 and 94 back into the position of FIG. 8.
  • the rod 39 moves away from the blade 7, which causes the chrono engine to restart.
  • the lever 93 and the hammer 91 have the form shown in FIG. 8. In the position of this fig. 8, it is not possible to actuate the pusher 33.
  • the lever 93 is cut with a length a little shorter than that shown in FIG. 8. This would cause the chronograph mobiles and the digital display device 9 to return to zero without the chrono engine being stopped. Counting then resumes immediately after the hammer return springs have once again moved these parts away from the counting mobiles.
  • the digital display circuit maintains the indication of the hundredth of a second displayed for a few moments when the push-button 33 is pressed, in order to allow this indication to be read, the display returning to the normal count indication at the end of the holding time:
  • This battery voltage detector or another detector of the same kind can also be used to remedy another difficulty which may arise during the operation of the devices described; although the duration of the pulses of the two stepping motors 12 and 14 which have been described is extremely short, which practically means that it is less than 1/100 of a second, it can happen, depending on the moment when the mechanism of chronograph is engaged, the battery must provide the energy necessary to operate the two motors at the same time. To avoid too great a voltage drop across the battery, two measures can be planned. First of all, care should be taken to ensure that the polarities of the pulses which drive the two motors are reversed.
  • the control of the pulses formed in circuits 13 and 11 will be carried out so that in the event of simultaneous control, the pulse effectively transmitted to the chronograph motor 12 is offset, for example by one hundredth of a second relative to the impulse which is supplied to the motor 14. In practice, this offset is invisible and has the effect of avoiding undue stress on the battery.
  • the voltage doubler circuit DT (fig. 1) supplied by the time base signals at 32 kHz.
  • the motors 12 and 14 are constructed so as to operate under the voltage supplied by the current batteries provided for a movement watchmaking, i.e. 1.5 V, it is known that it is advantageous to supply an electro-optical display device and more particularly a liquid crystal device with a voltage greater than this value of the battery voltage and that 'By connecting, for example, a voltage doubler to the input of the decoder, it is easy to supply the liquid crystal cells with a much more judicious voltage.
  • the role of brakes 94 and 95 should also be noted in connection with the partially electronic and partially mechanical control of the chronograph functions. Indeed, to reduce the consumption of the battery, it is necessary to build the motors and in particular the chronograph motor so that its retention torque is not too high. On the other hand, the chronograph motor should not be driven in rotation under the effect of the hammers actuating the hearts when the mechanism returns to zero, which is why on all mobiles equipped with hearts, couplings with friction out was planned. When the chronograph hands return to zero, the pinion 73 of the central second hand and the wheel 76 actuating the minute register hand are blocked by the brakes 94 and 95.
  • FIG. 1 the H.S. connection between the control circuit C and the time base. This connection makes it possible to deactivate all of the watch's functions when the contact 6 is put into action by pulling on the crown in its external position. This connection allows the storage of finished watches with the battery in place without running the risk that the battery will run out by keeping the various circuits under tension.
  • a watch mechanism has been described whose time-setting comprises essentially mechanical means, it could also, in another embodiment, provide for an electronic time-setting of the hands and the mechanism watch, i.e. needles 28, 29 and 26.
  • the crown 31 and the rod 57 instead of acting on the pull tab 42 and the rocker 44, would control one or more contacts either during an axial displacement, or during 'a rotational movement and these contacts would act on the electronic control circuit of the motor 14.
  • the day counter 16 could be directly incorporated into the counter 2 and it would no longer be necessary to provide the rotary contact 15 to perform the digital date display. If necessary, counters 2 and 16 could be designed so as to produce a perpetual calendar, so that it would no longer be necessary to provide a date correction mechanism.
  • electro-optical display device here designates any device making it possible to display time information by electrical action, without displacement of a material body, therefore without delay due to mass inertia.

Claims (10)

1. Elektronische Chronographuhr mit elektronischen Zählmittel (3a, 3b), denen von einer Zeitbasis ausgegebene Signale zugeführt werden und die zu durch die Zählung bestimmten Zeitintervallen Steuersignale für einen Schrittmotor (12) erzeugen, wobei der genannte Motor einen Rotor aufweist, der ein Untersetzungsgetriebe (46, 73, 76) besitzt, von dem wenigstens zwei Räder (73, 76) durch Kupplungen mit den Anzeigeorganen (71, 65) verbunden sind, und wobei eine Nullrückstellfunktion einerseits durch eine auf die Anzeigeorgane ausgeübte mechanische Aktion zum Rückführen der Anzeigeorgane in eine Referenzstellung und andererseits durch eine Rückstellung auf Null der Zählmittel realisiert ist, dadurch gekennzeichnet, dass ein Mittel (95) zum Blockieren des genannten Untersetzungsgetriebes vorhanden ist, dass sich das Blockiermittel während der genannten mechanischen Aktion in der Blokkierstellung befindet, dass die genannten Kupplungen Reibkupplungen (74,79) sind und dass der Rotor des Motors (12) durch das Blockiermittel in der nach dem Ausführen des letzten Schrittes eingenommenen Stellung festgehalten wird, wenn die Nullrückstellung der Zählmittel durchgeführt wird.
2. Chronographuhr nach Anspruch 1, dadurch gekennzeichnet, dass die genannten Zählmittel zum Anzeigen der Zeiteinheiten deren Dauer ein ganzzahliger Faktor des genannten Zeitintervalles ist, mit einer Hilfsanzeigevorrichtung verbunden sind und dass die Hilfsanzeigevorrichtung (9) eine elektro-optische Anzeigevorrichtung ist, welche durch die Nullrückstellung der Zählmittel auf Null zurücksetzbar ist.
3. Chronographuhr nach Anspruch 1, dadurch gekennzeichnet, dass die Nullrückstellfunktion durch Rückstellmittel realisiert wird, welche einen Drücker (33), wenigstens zwei Hammerelemente (91 b, 92a), die unter der Wirkung einer zentralen Verschiebung des Drückers gleichzeitig versetzt werden, herzförmige Nocken (72, 65a), die mit den genannten Anzeigeorganen (71, 65) fest verbunden und zum Zusammenwirken mit den genannten Hammerelementen ausgebildet sind, und ein an einem (92a) der Hammerelemente befestigtes, steifes Kontaktelement (40) umfasst, das zum Inkontakttreten mit einem mit einer Anschlussklemme des Nullrückstellmittels der Zählmittel verbundenen ortsfesten Element (10) während dem Versetzen des Hammerelementes ausgebildet ist, wodurch die genannte Anschlussklemme an Masse gelegt wird.
4. Chronographuhrnach Anspruch 1, in welcher eine Einschalt- und Anhaltefunktion durch Steuermittel realisiert ist, welches einen Drücker (32) aufweist, dessen zentrale Verschiebung alternativ das Einschalten und das Anhalten der genannten Zählmittel steuert, dadurch gekenneichnet, dass diese Steuermittel einen alternativ zwischen einer Einschaltstellung und einer Anhaltestellung versetzbaren Steuerhebel (93), einen mit einem Element (73) des genannten Untersetzungsgetriebes zusammenwirkenden Bremshebel (95) umfasst, der wenigstens einen Teil des genannten Blokkiermittels bildet und dem genannten Steuerhebel (93) so zugeordnet ist, dass der Bremshebel in die Bremsstellung verbracht wird, wenn der Steuerhebel in die Anhaltestellung übergeht, und dass der Steuerhebel (93) einen Einschalt- und Anhalteunterbrecher (39, 7) betätigt, der zwischen die Zeitbasis und das Zählmittel geschaltet ist.
5. Chronographuhr nach Anspruch 4, dadurch gekennzeichnet, dass der Einschalt und Anhalteunterbrecher eine elastische, ortsfeste Klinge (7) und ein am Steuerhebel (93) befestigtes, steifes Kontaktelement (39) umfasst, und dass die Steuermittel so angeordnet sind, dass in der Anhaltefunktion der Bremshebel (95) in Berührung mit dem Element (73) gelangt, das er blokkiert, nachdem der Einschalt- und Anhalteunterbrecher betätigt worden ist.
6. Chronographuhr nach Anspruch 5, dadurch gekennzeichnet, dass der Bremshebel (95) und der Steuerhebel (93) um parallele Achsen schwenkbar sind, und dass der Bremshebel eine Rampe aufweist, welche an einem vorstehenden Teil (39), der am Steuerhebel (93) befestigt ist, unter der Wirkung einer auf den genannten Bremshebel (95) einwirkenden Feder anliegt.
7. Chronographuhr nach Anspruch 1, in welcher die gennaten Räder (73, 76) des Untersetzungsgetriebes, welche mit den Anszeigeorganen (71, 65) gekuppelt sind, mit unterschiedlichen Geschwindigkeiten drehen, dadurch gekennzeichnet, dass das Blockiermittel eine Bremse (95) aufweist, die auf jenes (73) der genannten Räder einwirkt, dessen Drehgeschwindigkeit am grössten ist.
8. Elektronische Chronographuhr mit einem Schrittmotor (12), elektronischen Zeitperiodenzählmittel (3a, 3b) zum Steuern des genannten Motors, einem aus einer Anzahl Räder (46, 73, 76) gebildeten Geschwindigkeitsuntersetzungsgetriebe, dessen erstes Rad (46) ein am Rotor des Motors befestigtes Ritzel ist und wenigstens zwei (73, 76) andere Räder Antriebsräder sind, wenigstens zwei Zeitanzeigeorgane (71, 65), von denen jedes koaxial bezüglich der Antriebsräder montiert ist, und einem zwei Drücker (32, 33) aufweisenden Steuermechanismus, der fähig ist, unter der Einwirkung eines ersten Drückers (32) den Motor einzuschalten und anzuhalten und unter der Einwirkung des zweiten Drückers (33) die Rückkehr der Anzeigeorgane auf Nullmittel wenigstens zwei auf herzförmige, an den genannten Anzeigeorganen befestigte Nocken (72, 65a) reagierende Hammerelemente (91, 92) zu veranlassen, dadurch gekennzeichnet, dass jedes der genannten Anzeigeorgane (71, 65) mit dem zugehörigen Antriebsrad über eine Reibkupplung (74,79) verbunden ist, dass die Hammerelemente (91, 92) so angeordnet sind, dass gleichzeitig jedes mit einer der genannten Nocken (72, 65a) zusammenwirkt, und dass der Steuermechanismus weiter zum Blockieren eines (73) der Räder des Untersetzungsgetriebes und Stillhalten des letzteren und des Motors während dem Rückstellen der Anzeigeorgane auf Null eine Bremsvorrichtung (73) aufweist.
9. Elektronische Chronographuhr mit einer manuell zugänglichen Steuervorrichtung, einer Zeitbasis, permanent zählenden Zählmittel (2), intermittierend zählenden Zählmittel (3a, 3b), wobei die einen und die anderen mit der Zeitbasis verbunden sind, die ersten dauernd und die zweiten unter der Wirkung der Steurvorrichtung, und mit zwei den Zählmitteln zugeordneten Anzeigevorrichtungen, wobei jede Anzeigevorrichtung wenigstens einen Schrittmotor (12, 14) und mehrere drehbare Anzeigeorgane (54, 64; 71, 65) aufweist und die Steuervorrichtung Ein- und Ausschaltmittel (32, 93, 39) und Nullrückstellmittel (33, 91, 92, 72, 65a, 40) umfasst, von denen die einen und die anderen fähig sind, auf die intermittierend zählenden Zählmittel einzuwirken, dadurch gekennzeichnet, dass die Nullrückstellmittel einen auf die herzförmigen und an den genannten Anzeigeorganen (71, 65) befestigten Nocken (72, 65a) und auf einen Nullstellkontakt (10) genannten intermittierend zählenden Zählmittel (3a, 3b) einwirkenden Hammermechanismus (91, 92) umfassen, dass jede der Anzeigevorrichtungen einen eigenen ein Uebersetzungsgetriebe antreibenden Schrittmotor umfasst, der zu durch Ausgangssignale der Zählmittel (2; 3a, 3b) bestimmten ZeitintervaIIen` angetrieben und durch diese Zählmitel gesteuert wird, und dass die mit den intermittierend zählenden Zählmittel verbundene Anzeigevorrichtung weiter ein Hilfsanzeigeelement (9) vom Typ elektro-optisch aufweist, das fähig ist, die Zeiteinheiten, deren Dauer ein gazzahliger Faktor des genannten Zeitintervalles ist, anzuzeigen und das durch die intermittierend zählenden Zählmittel auf Null zurücksetzbar ist.
10. Chronographuhr nach Anspruch 9, dadurch gekennzeichnet, dass das Hilfsanzeigeelement (9) eine elektrooptische Flüssigkristallzelle mit zwei Anzeigestellen ist, die fähig ist, die Hundertstelssekunden eines eine Sekunde dauernden Zeitintervalles anzuzeigen.
EP82810556A 1981-12-28 1982-12-20 Elektronische Chronographuhr Expired EP0083307B1 (de)

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CH831381A CH649189GA3 (de) 1981-12-28 1981-12-28
CH8313/81 1981-12-28

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EP0083307A1 EP0083307A1 (de) 1983-07-06
EP0083307B1 true EP0083307B1 (de) 1987-06-10

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EP82810556A Expired EP0083307B1 (de) 1981-12-28 1982-12-20 Elektronische Chronographuhr

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EP (2) EP0097168B1 (de)
JP (2) JPS59500014A (de)
CH (1) CH649189GA3 (de)
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JPS58115394A (ja) 1983-07-09
US4588305A (en) 1986-05-13
CH649189GA3 (de) 1985-05-15
EP0083307A1 (de) 1983-07-06
WO1983002340A1 (fr) 1983-07-07
JPS59500014A (ja) 1984-01-05
EP0097168B1 (de) 1987-03-18
DE3276548D1 (en) 1987-07-16
DE3275766D1 (en) 1987-04-23
EP0097168A1 (de) 1984-01-04
US4540291A (en) 1985-09-10

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