EP0148414B1 - Mouvement d'horlogerie comportant plusieurs moteurs pas à pas et une base de temps électronique - Google Patents

Mouvement d'horlogerie comportant plusieurs moteurs pas à pas et une base de temps électronique Download PDF

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Publication number
EP0148414B1
EP0148414B1 EP84114752A EP84114752A EP0148414B1 EP 0148414 B1 EP0148414 B1 EP 0148414B1 EP 84114752 A EP84114752 A EP 84114752A EP 84114752 A EP84114752 A EP 84114752A EP 0148414 B1 EP0148414 B1 EP 0148414B1
Authority
EP
European Patent Office
Prior art keywords
counting
motors
wheel
base plate
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
EP84114752A
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German (de)
English (en)
French (fr)
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EP0148414A2 (fr
EP0148414A3 (en
Inventor
Ray Claude
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
Eta SA Fabriques dEbauches
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Publication date
Application filed by Eta SA Fabriques dEbauches filed Critical Eta SA Fabriques dEbauches
Publication of EP0148414A2 publication Critical patent/EP0148414A2/fr
Publication of EP0148414A3 publication Critical patent/EP0148414A3/fr
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Publication of EP0148414B1 publication Critical patent/EP0148414B1/fr
Expired legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F8/00—Apparatus for measuring unknown time intervals by electromechanical means
    • 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

Definitions

  • the object of the present invention is therefore to produce a timepiece movement according to the definition of the preamble of claim 1, in which the various motors are arranged as judiciously as possible in order to achieve a compact and reliable arrangement.
  • the invention relates to such a timepiece movement which is characterized in that the frame comprises two opposite support surfaces which each support at least one of said motors and in that the conductors electrical connection of these motors are constituted at least partially by tracks formed on two insulating substrates fixed in the frame each opposite one of said support surfaces. These motors can be at least partially superimposed.
  • a clockwork movement with analog display comprising a stepping motor intended to drive several display elements cooperating with a dial, and a plate to support the mechanism. movement, plate in which is inserted a guide tube extending towards the dial and intended to guide coaxial mobiles interposed between said display elements and the stepping motor.
  • the stepping motor alone drives all the display elements.
  • the latter are mounted on the coaxial mobiles, the one driving the second hand passing inside the guide tube, while the ones driving the hours and the minutes respectively are mounted one inside the other around this tube. guidance.
  • the invention also aims to provide a timepiece movement whose construction is compact and reliable and which results from an adaptation of the known arrangement of US-A-4,308,610, to a timepiece movement having several stepper motors respectively coupled to the display elements.
  • the invention therefore relates to a timepiece movement with analog time display comprising a time base, an electronic device for developing drive signals regulated by the time base and intended for deliver these signals to several stepping motors respectively coupled to separate display elements cooperating with a dial, and a main plate to support the movement mechanism, plate in which is inserted a guide tube extending in the direction of the dial and intended to guide coaxial mobiles interposed between said display elements and the respective stepping motors, characterized in that two of said mobiles pass coaxially inside said guide tube and are coupled on the side of the plate opposite the dial respective cogs driven by two of said motors, also placed on the same side of said plate.
  • the timepiece shown in fig. 1 is a wrist chronograph watch. However, it is understood that the movement which will be described below can also be performed so as to be incorporated into a pocket watch case for example, or any other embodiment.
  • Fig. 1 shows the appearance of the visible face of the chronograph watch. It can be seen in particular that the functions can be controlled by means of four different control members, a control crown 1 and three push buttons designated by 2, 3 and 4.
  • the dial 5 comprises a certain number of graduation scales centered on the axis of movement and three small graduation scales arranged outside the center.
  • the graduation scales concentric with the movement have on the outside a graduation in one hundred divisions designated by 6, and which makes it possible to identify the position of a hand 7 marking the hundredths of a second.
  • the off-centered graduation scales include around 6 a circular scale divided into thirty graduations, designated by 12, and on which a hand 13 moves. As will be seen later, this hand is a minute counting hand which moves when the chronograph function is activated. At 9 o'clock there is a graduation scale 14 corresponding to a hand 15. This hand is a small second hand. It therefore works continuously and is driven by the current time measurement mechanism as we will see below, while at 12 o'clock we find a graduation scale 16 divided into twenty-four parts above which a hand moves 17. This hand is a hand for counting the hours and half hours of timed times. It also only works when the chronograph function is engaged.
  • the dial 5 includes a window 18 under which appear two display positions of a digital liquid crystal display cell designated by 19.
  • this cell is controlled by the time-counting device current and indicates the date when the chronograph is not engaged. It could fulfill other functions when the chronograph is started, for example indicating the order of memorization of the timed times.
  • the various functions of the chronograph watch are clearly shown in FIG. 1. It is a timepiece which indicates the current time in the form of seconds, minutes and hours in analog form by means of hands normally placed in the center of the dial for the hours and minutes and offset at 9 o'clock for the seconds.
  • the measurement of current time includes a calendar function indicated in digital form by a liquid crystal cell.
  • two central hands indicate the measurement of seconds and hundredths of a second, while two hands shifted respectively to 6 o'clock and to 12 o'clock indicate the minutes and hours of the timed periods of time, the cell with liquid crystal then indicating the order of the memorized times.
  • the time measurement functions of the current time are set by means of a usual control rod which can be moved axially between three positions, namely a rest position and two control positions, one of which allows the hands to be moved by rotation.
  • the three push-buttons 2, 3 and 4 provide switching-on, switching-off and return-to-zero functions for the measurement of timed times.
  • the hundredths of a second measuring needle is not moved when the user presses the stop button for the timed times. It then moves to a position corresponding to the fraction of a second that has been measured by a counter that is part of the electronic device.
  • a counter that is part of the electronic device.
  • each of the four hands for measuring timed times is driven by a different stepping motor.
  • the movement therefore includes four motors for measuring timed times plus a motor for counting current time, this latter motor driving a conventional train.
  • the special feature of the movement is that the motors are placed on two opposite support surfaces so that at least two motors can be directly superimposed, which allows a small surface construction.
  • Figs. 2 to 4 as well as fig. 11 show how the frame of the movement is designed and how the main organs which provide the described functions are arranged.
  • the main frame element is a plate 20 of circular shape (fig. 2). On this plate are mounted a motor 21, which drives the gear train for measuring the current time, a motor module 22 and a motor module 23.
  • the motor modules 22 and 23 are autonomous blocks which each comprise a stepping motor, a gear train and two bridges ensuring the pivoting of the gear wheels.
  • the engine module 22 counts the minutes of the timed times, while the engine module 23 counts the hours of the timed times.
  • the motor module 22 includes a mobile indicator 24 off-center over 6 h.
  • the mobile which carries the needle 13
  • the motor module 23 comprises a mobile indicator 25 off-center at 12 o'clock and which carries the needle 17.
  • the motor 21 and the modules 22 and 23 are partially covered by a insulating substrate 26 (fig. 2) which carries conductive tracks.
  • a gear train bridge 27 Next to and partially under this substrate is fixed a gear train bridge 27.
  • the support plates 28 and 29 as well as similar plates placed under the lower printed circuit substrate make it possible to press the printed tracks on the internal faces of the substrates against the ends of the lamellae conducting the blocks 31 and 32, which ensures the conduction on the one hand of the control pulses going to the motors located above the plate and on the other hand of the control pulses of the cell 19 and of the control pulses given by pushers 2, 3 and 4.
  • the power source of the movement constituted by a usual battery, as well as the two blocks 31 and 32 are embedded in a support block made of insulating material 34 (fig. 5 and fig. 11) which is engaged itself in a hole in the plate and which projects on both sides of this plate.
  • Fig. 5 which is a sectional view along the line V-V of FIG. 2, also illustrates this provision.
  • the plate 20 with the opening 33 in which is engaged the projecting part of the block 34.
  • One of the connecting blocks 31 is also visible in this figure 5, as well as the upper substrate 26 and the lower substrate 35
  • Four pillars 36, driven into holes in the plate extend upwards and downwards and penetrate into holes made respectively in the upper substrate 26 and in the lower substrate 35 as well as in the upper support plate 28 and the corresponding lower support plate 37.
  • Screws 38, 39 make it possible to tighten the support plates and the substrates on either side of the block 34, which ensures the connection between the lamellae of the conductive blocks 31 and 32 and the corresponding tracks of the substrates 26 and 35, and on the other hand the rigidity of the assembly of the substrates relative to the plate.
  • the support block 34 has in its lower face a housing 40 in which a battery 130 is engaged.
  • the block 34 has a hole 41 through which a strip 42 fixed on the internal face of the substrate 26 can penetrate and come into contact with the negative pole of the battery.
  • the connection between the lower pole of the battery and the substrate 35 is not shown in the drawing. It comprises a strip similar to the strip 42 screwed onto the external face of the substrate 35 thus ensuring positive contact.
  • the plate 20 also has other pillars such as the pillar 43.
  • These pillars are three in number distributed around the periphery of the plate as can also be seen in FIG. 2. They are used to fix above and below the movement of the shielding caps 44 and 45. It can be seen that the side walls of these shielding caps come to bear on the upper and lower faces of the plate, the thread of which extends outside these caps so that it can be supported vertically in the watch case. However, caps 44 and 45 have each cune a machined cylindrical surface 46 which serves to center the movement inside the box.
  • the functions of the pillars 43 also consist in guiding and holding in place conductive strips such as the strip 47 which are bent in height and extend opposite marked tracks on the edge of the substrate 26.
  • Fig. 5 also shows the mounting of the cell 19 on the substrate 26.
  • the upper face of the substrate will have the number of conductive tracks necessary to control the two display positions with seven segments each, making it possible to show all the digits from 0 to 9.
  • the dial 5 extends above the shielding cap 44 and we see the cross-sectional shape of the edges of the window 18 in FIG. 5.
  • This module comprises a module plate 52 which comes to bear directly on the plate 20.
  • a module bridge 53 is preassembled which, as seen in FIG. 7 is milled from below and from above so as to have a base at its two ends and a raised part between the two ends.
  • the module plate 52 also carries the stator 54 of the motor which is a piece of material with high magnetic permeability cut into an elongated shape and having holes, in particular a circular hole 54 with two notches in its edge, intended to surround the rotor 55 of the motor.
  • the stator 54 is placed above the stator 54, the core 56, the central portion of square section of which passes through the coil 57, while the two end ears have holes in which the guide and centering parts 58 and 59 are engaged. , one of which is threaded and is used at the same time for fixing by means of a screw 60 of the core and the stator to the module plate 52.
  • the other screw 61 slides without play in the guide piece 59 and ensures one of the fasteners of the pre-assembled module 52 on the plate 20.
  • the module 22 also has two screws 62 and 63.
  • the screw 63 is engaged in a guide sleeve 64 and is simply used to assemble the module bridge 53 to the module plate 52, while the head of the guide sleeve 64 is engaged in a hole 65 of the plate, which ensures the positioning of the module block.
  • the fourth screw 62 slides without play in a guide sleeve 66. It not only passes through the base of the module bridge 53 and the module plate 52, while being screwed into the plate 20, but also its head presses on a part lateral projection of the substrate 26 and on an intermediate substrate wafer 67, mounted between the base of the module bridge 53 and the substrate 26.
  • the module 22 can be mounted as an independent block thanks to the screws 60 and 63 engaged in the sockets 58 and 64. Then, this block can be put in place on one of the sides of the plate 20, oriented by the socket heads 58 and 64 which engage in calibrated holes of the plate, and fixed by the screws 61 and 62 which definitively ensure the fixing of the members of the module.
  • the screw 62 presses the tracks of the circuit 26 against those of the wafer 67 thus connecting the motor to the circuit.
  • the screws 60, 61, 63 are visible in FIG. 3. Although the substrate 26 is not shown in this figure, it can be understood that the plate 67 which extends over the cleared part of the bridge 53, can carry two separate tracks on each of which one of the ends of the wire of the coil 57. Each of these two tracks comes into contact with a separate track marked on the substrate 26 when the latter is put in place and secured by the screw 62.
  • the screw 63 and the sleeve 64 are also used for positioning the module on the plate, while the screw 60 is used for positioning the core-stator assembly of the motor on the plate 52 and the screw 61 for fixing the pre-assembled module to the plate 20.
  • Fig. 7 shows the module in section along a line passing through the center of the various mobiles driven by the motor.
  • This figure shows the stator 54 of the motor and its core 56.
  • the rotor 55 pivots between the module plate 52 and the bridge 53 in common stones.
  • the rotor pinion 68 drives an intermediate mobile 69 whose pinion itself drives the indicator mobile 24 which is provided with an extended shaft crossing not only the bridge 53 but also the entire space between this bridge and the dial so as to carry at its end the minute counting needle 13.
  • module 22 By using stepping motors whose rotor makes a half-turn at each step, and by providing in the module 22 a reduction with an intermediate mobile, it is easy to control the minute-counting hand so that '' it completes a complete revolution in 30 min, which is why the graduated scale 12 on dial 5 carries a scale in 30 min.
  • the module 22 comprises in its train an intermediate mobile between the rotor pinion and the indicator mobile
  • the indicator mobile is directly engaged with the rotor pinion.
  • this module 23 could be designed identically to module 22.
  • the arrangement which has just been described for the two modules 22 and 23 for counting the minutes and hours of the timed times, has the advantage that these two modules can be manufactured entirely independently and used in different calibers. Thus, nothing prevents mounting a pair of modules 22 and 23 on plates of different dimensions, the axis of the indicator mobiles 24 and 25 being on the axis 6h - 12h at a greater or lesser distance from the center . If necessary, in variants, the modules could also be placed so that the axes of the mobiles 24 and 25 are on other main axes of the plate, for example one of these axes could be over 3 h , in the event that the watch does not include the digital display cell 19.
  • the motors of the two modules 22 and 23 With regard to the construction of the motors of the two modules 22 and 23, it can be seen that an embodiment has been chosen with cores 56 of slightly arched shape, the coils being wound directly on the cores and also having an arched shape.
  • the motors intended for the two modules 22 and 23 can be exactly the same. In the embodiment described, all the motors are unidirectional motors. The motors are driven in the direction of rotation which causes the movement of the corresponding indicator member in the clockwise direction in steps whose duration corresponds to the period of time which must be counted. For the return to zero, each motor will receive the number of pulses corresponding to the difference at zero in its direction of rotation but at a frequency faster than the counting frequency, for example 32 Hz.
  • the current time counting device is supported by the bridge 27 visible in FIG. 2 and also shown in FIGS. 3 and 8.
  • the elements of this counting device are visible in more detail in FIG. 3 where it can be seen that they occupy a sector lying between the center of the plate 20 and the region lying between the orientations of 8 h and 10 h.
  • FIG. 3 where it can be seen that they occupy a sector lying between the center of the plate 20 and the region lying between the orientations of 8 h and 10 h.
  • the counting motor 21 and the elements of the counting train which will be described below are mounted directly on the plate 20.
  • the motor 21 comprises a coil 48 rectilinear engaged on a rectilinear core 71 whose ears are placed on the ends of the stator 72, one of these ears being itself covered by an extreme portion of the substrate 26, while the other is pressed against the stator by a screw 73 which passes through the stator and is fixed in the plate 20.
  • the contour of the bridge 27 extends around the elements of the motor. It covers the stator 72 only in the area of the opening 74 provided for the engagement of the rotor 70 in order to pivot the upper end of this rotor.
  • An insulating substrate board 76 is inserted in height between the upper substrate 26 and the ear of the core 71.
  • this substrate board serves as a connection terminal between the tracks of the substrate 26 and the ends of the coil wire 48. These two ends are in fact connected by welding to the two tracks printed on the wafer 76.
  • the rotor 70 comprises a pinion 77 which attacks the wheel of a first intermediate mobile 78.
  • the pinion of this intermediate mobile engages in the wheels of two similar mobile designated by 79 and 80 in FIG. 3.
  • the mobile 79 is located as seen in FIG. 3 on the axis 3h - 9h and, as seen in fig. 8, it comprises an elongated shaft intended to carry the small second hand 15. This mobile 79 is therefore driven so that the needle 15 rotates by an angle of 6 degrees at each step, the motor 21 receiving pulses at periods of one second.
  • the mobile 80 which, in FIG. 8, coincides with the mobile 79, is arranged as seen in FIG. 3 between the intermediate mobile 78 and a third intermediate mobile 81 whose pinion drives a conventional center wheel 82.
  • the center wheel 82 is frictionally mounted on a center pinion 83 which pivots on a tube 84 planted in the plate 20 at the center of the latter.
  • a timer wheel 85 is provided between the center pinion 83 and an hour wheel 86 and this timer wheel 85 is itself attacked by a train of two time-setting references 87 and 88 whose return 88 is capable of engaging with a toothing of a sliding pinion 89 mounted on a control rod 90 carrying the crown 1 shown in FIG. 1.
  • the control mechanism of the current time counting train is a conventional mechanism which need not be described here.
  • the sliding pinion 89 which engages with the gear 88 is moved by means of a zipper system and switches over.
  • the rod 90 and the sliding pinion 89 are mounted between the bridge 27 and the plate 20 and it is not necessary to describe this arrangement in detail.
  • the hour wheel 86 carries the hour indicator hand of current time 10, but also serves to control the switching of the date in the liquid crystal electronic cell 19. For this, it controls the switching on of a switch once a turn, the contact strip of which grounds a track formed on the upper surface of the substrate 26, which once on two commands sending a switching pulse from cell 19 by the electronic device for developing control signals.
  • the shape of the lower insulating substrate 35 is seen, which is a shape in an arc of a circle surrounding the center. As we said before ment, this substrate is held in place by screws 39 engaged in the pillars 36 (fig. 5) and the face of the substrate which is visible in fig. 4 is the internal face, therefore that which is pressed against the zebra contacts 31 and 32.
  • This substrate which is also supported by a rigid plate 37, carries the electronic device for developing the control signals designated by 135 which is a chip of an integrated circuit constructed in the usual way, fixed on the upper surface of the substrate, either on the interior side of the movement.
  • the various output terminals are connected by wires welded to the various tracks intended to conduct the signals to the organs such as the motors and the display cell which must be controlled.
  • the quartz 140 which constitutes the time base is also represented diagrammatically on the upper face of the substrate 35. We also see in FIG. 4 the connection blocks 31 and 32 which ensure the conduction of the pulses to the tracks carried by the upper substrate 26.
  • the motors 120 for counting the seconds of the timed times and 125 for counting the hundredths of a second of the timed times are arranged under the plate and comprise a stator which is fixed directly against the corresponding face of the plate and a core which carries the coil and which is separated from the plate by the thickness of the stator.
  • a screw 97 ensures their common fixing.
  • the bridge 95 is fixed on the other hand by a screw 98 which successively passes through the core 123, then the stator 121 of the motor 120 and is engaged in the plate.
  • the bridge 96 is also fixed by a screw 99 which successively passes through the core 128 and the stator 126 of the motor 125 and enters the plate.
  • a screw 100 further secures the core 123 and the stator 121 of the motor 120 against the plate.
  • This screw also passes through the lower substrate 35 (fig. 9), its head pressing against the underside of this substrate and this screw clamps a substrate plate 101 between the substrate 35 and the core 123, so as to connect the tracks of the substrate 35 over the coil of the motor 120.
  • a screw 103 passes successively through the substrate 35, a plate (not shown) corresponding to the plate 101, the core 128 of the motor 125 and the stator 126 of this motor.
  • the rotor 93 of the motor 120 drives by its pinion an intermediate mobile 105 whose pinion attacks the mobile 106 for counting the seconds of the timed time.
  • this mobile is disposed in the center of the movement under the plate and comprises a hollow shaft 107 provided at its upper end with a nut which is adjusted to the internal diameter of the tube 84 fixed to the center of the plate. The lower end of the hollow shaft 107 is guided in a plug 108 fixed in the bridge 95.
  • the rotor 94 of the motor 125 attacks by its pinion the wheel of an intermediate mobile 109 (FIG. 10) whose pinion attacks the wheel 110 of a mobile for counting hundredths of a second.
  • This mobile also comprises a shaft 111 rigidly fixed in the wheel 110, one end of which is supported by a stone bearing 112 placed on a bridge 96 facing the center of the plate, while the other end is extended by crossing the plug 108 and the hollow shaft 107. At its upper end, this shaft 111 has a nut 113 which guides the shaft inside the barrel 107.
  • the shaft 111 obviously carries the needle 7 for counting hundredths of a second, while the hollow shaft 107 carries the needle 11 for counting the seconds of the timed times.
  • the fixed tube 84 planted in the center of the plate 20 guides the center pinion 83, the barrel of which extends to the top of the dial and carries the minute counting needle of the current time 9.
  • This pinion center 83 has at its lower end a groove 83a in which is engaged in friction the center wheel 82 as already mentioned above.
  • the timer wheel 85 is also visible in FIG. 9, although it is not in the drawing plane. It pivots in deck 27 which, as we have seen in fig. 2, has in the vicinity of the center a notch surrounding the space between the board of the hour wheel 86 and the central hole of the upper armor cap 44.
  • a last movable member 114 (fig. 9) is housed in this space .
  • a leaf spring such as a foil or which can be directly a part of the contact blade 118 pressing either under the dial or under the cap 44, presses the lower flat annular part of this cam 114 against the board of the wheel 86.
  • Three spacing studs 115 are planted in the board of the cam 114 in positions at 120 ° so as to project on its lower face and on its upper face.
  • the part which projects on the lower face has two bevels oriented in circumferential direction one towards the front, the other towards the rear, while the part which projects from the upper side forms a cylindrical stud which is engaged in one of the three notches 116 formed around the central hole of the cap 44.
  • each of the notches res 116 is slightly larger than the diameter of the corresponding stud so that the ring 114 is held in place with peripheral play in an almost constant orientation.
  • this ring can still slide on the barrel of the wheel 86 and the bevelled protrusions of the cam elements 115 cooperate with recesses or holes 117 made in the plate of the wheel 86.
  • a conductive strip 118 is mounted on the planar annular part of the ring 114 and this conductive strip has a point inclined obliquely and which extends above the upper face of the substrate 26 at a location where this substrate carries a conductive track 26a connected to the electronic device 135.
  • this wheel tends to frictionally drive the cam 114 so that the upper parts of the studs 115 press against the front edge of the notches 116, i.e. the edge forward in the direction of rotation of the watch hands.
  • the flat surface segment designated by 115a in FIG. 9 and which has a rectangular shape, extending between the tops of the two bevelled flanks 115b and 115c, is in contact with the upper face of the board of the wheel 86.
  • the ring 114 is again driven with the hour wheel by friction until the upper parts of the studs 115 press again against the edges of the notches 116. From this position, the action of the rear edge of the openings 117 on the corresponding bevels of the studs 115 causes an axial displacement of the ring 114, which quickly breaks the contact between the strip 118 and the substrate 26 and brings the ring back to the position shown in the drawing where the surfaces 115a of the studs 115 rest on the plate of the wheel hours.
  • the symmetrical arrangement of the bevels 115b and 115c has the effect that the operation of the switch described is the same, whatever the direction of rotation of the hour wheel.
  • the electronic circuit will be programmed so that the switching command of the liquid crystal display cell takes place only once every two pulses, so that the command is done once every 24 hours.
  • the arrangement described above therefore manages to concentrate in a reduced space all the mechanisms necessary to ensure the functions of counting and display of current time in hours, minutes and seconds and calendar, and to ensure the counting of time periods timed to the nearest hundredth of a second, the seconds, minutes and hours can be read continuously on the display means, while fractions of a second i.e. in this case, the hundredths of a second are only displayed at the end of a counting period.
  • the presence of three pushers 2, 3 and 4 has been shown in the drawing, it is understood that in fact the functions described could be controlled by means of only two pushers, controlling the first one. switching on and off, and the second return to zero.
  • the arrangement makes it possible in particular to provide for the drive motor 21 compassion of the cog of time counting running a relatively low consumption engine since it runs constantly.
  • This motor drives a gear train with high gear ratio making it possible to produce the friction coupling between the wheel 82 and the center pinion 83, under conditions such that a correction of the displayed time can be carried out by means of the rod 90 and of the crown without disturbing the motor 21.
  • the off-centered second hand 15 is stopped during this operation. In fact, when the time is set, all of the power supply to the motors is stopped. This operation enables the current time to be reset to the second by pressing crown 1 at the time of the time signal.
  • the radial control members such as the crown 1 and the pushers 2, 3 and 4 are arranged in height between the plate 20 and the gear train 27. This arrangement facilitates the construction of the box because the pushers are thus between the plane medium and lower surface. It is therefore possible, especially in the case of a wristwatch, to give the lower parts of the case a beveled shape without disturbing the sealing devices of the pushers and the crown.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Control Of Multiple Motors (AREA)
  • Brushes (AREA)
EP84114752A 1983-12-06 1984-12-04 Mouvement d'horlogerie comportant plusieurs moteurs pas à pas et une base de temps électronique Expired EP0148414B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH651583A CH653846GA3 (ko) 1983-12-06 1983-12-06
CH6515/83 1983-12-06

Publications (3)

Publication Number Publication Date
EP0148414A2 EP0148414A2 (fr) 1985-07-17
EP0148414A3 EP0148414A3 (en) 1985-08-21
EP0148414B1 true EP0148414B1 (fr) 1988-07-27

Family

ID=4310828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114752A Expired EP0148414B1 (fr) 1983-12-06 1984-12-04 Mouvement d'horlogerie comportant plusieurs moteurs pas à pas et une base de temps électronique

Country Status (6)

Country Link
US (1) US4681464A (ko)
EP (1) EP0148414B1 (ko)
JP (1) JPS60177289A (ko)
CH (1) CH653846GA3 (ko)
DE (1) DE3473068D1 (ko)
HK (1) HK32692A (ko)

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Also Published As

Publication number Publication date
JPS60177289A (ja) 1985-09-11
US4681464A (en) 1987-07-21
JPH0380275B2 (ko) 1991-12-24
CH653846GA3 (ko) 1986-01-31
EP0148414A2 (fr) 1985-07-17
DE3473068D1 (en) 1988-09-08
EP0148414A3 (en) 1985-08-21
HK32692A (en) 1992-05-15

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