Classifications

• • G—PHYSICS
  • G04—HOROLOGY
  • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
  • G04B19/00—Indicating the time by visual means
  • G04B19/04—Hands; Discs with a single mark or the like
  • G04B19/048—Hands; Discs with a single mark or the like having the possibility of indicating on more than one scale, e.g. hands with variable length which work on different scales
• • G—PHYSICS
  • G04—HOROLOGY
  • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
  • G04B19/00—Indicating the time by visual means
  • G04B19/02—Back-gearing arrangements between gear train and hands
  • G04B19/025—Back-gearing arrangements between gear train and hands for simultaneous indicating on several dials
• • G—PHYSICS
  • G04—HOROLOGY
  • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
  • G04B9/00—Supervision of the state of winding, e.g. indicating the amount of winding
  • G04B9/005—Supervision of the state of winding, e.g. indicating the amount of winding by optical indication of the amount of winding

Definitions

• the present invention relates to a timepiece display device, comprising a first rotary display member displaying a first information by its position relative to a first reference frame, and at least a second rotary display member displaying a second piece of information by its position relative to a second frame of reference, the value of the second piece of information possibly being able to vary independently of the value of the first item of information, in which said first display member cooperates with first means rotating drive in connection with a mechanism managing the first information and said second display member cooperates with second rotating drive means in connection with a mechanism managing the second information, said second reference and said second member of display being coaxial, and said first and second drive means the first and second display members being rotated so that the second reference frame moves in synchronism with the first display member.
• Such devices are provided in timepieces to display a main information and secondary information, whose values may vary more or less independently of each other, for example the time and the power reserve of the movement, or the wake up time and the ringing state.
• the value of the secondary information is displayed in a small additional dial or in a counter, added to the main dial of the timepiece. Since the values of the main information and the secondary information evolve independently of each other in their respective dials, it is possible that at times the main information display member overlaps at least partially the secondary information display device and its dial, so that an easy and accurate reading of said secondary information is no longer possible.
• the additional dial or the window required to display the secondary information that must be added to the main dial load its surface, which can affect its aesthetics.
• An object of the present invention is therefore to overcome these disadvantages, by providing a display device for displaying at least two pieces of information, which may or may not be independent of one another, by means of minus two rotary display members, wherein said display members move without interfering with reading each of said information.
• Another object of the present invention is to provide a display device, in which the value of the second information is displayed without the help of additional dial or counter.
• devices comprising a second frame moving in synchronism with a first display member.
• patent CH 695 224 describes a display device comprising an hour hand, a minute hand, a fixed hour dial and a minute dial movable with respect to the hour dial. The rotational speed of the minute hand is accelerated so that thirteen rotations of the minute hand correspond to a rotation of the hour hand, ie twelve hours. The rotating minute dial moves in synchronism with the hour hand to give the actual value of the minutes.
• a timepiece display device comprising a first rotary display member displaying a first information by its position relative to a first frame of reference, and at least one second rotary display member displaying a second piece of information by its position relative to a second frame of reference, the value of the second piece of information possibly being able to vary independently of the value of the first piece of information, in which said first item display member cooperates with first rotating drive means in connection with a mechanism managing the first information and said second display member cooperates with second rotating drive means in connection with a mechanism managing the second information, said second frame and said second display member being coaxial, and said first and second second rotation drive means of the first and second display members being arranged so that the second reference moves in synchronism with the first display member.
• said second rotational drive means of the second display member comprise: a connecting wheel integral with the second display member, mounted to rotate coaxially with the second frame of reference, - a connected differential gearing kinematically by a first input to the first rotating drive means of the first display member, by a second input to the mechanism managing the second information, and an output to said connecting wheel.
• the second display member moves in synchronism with the first display member when the value of the second information is constant, and moves further with respect to the second reference as a function of the variation of the value. of the second information, so that the first and second members move without hindering the reading of each of said information.
• the expression "move in synchronism” means that one has a movement of the same speed and in the same direction as another movement.
• the first and second display members are coaxial, the first display member constituting the second frame of reference.
• the two display members are grouped on the same axis of rotation, which facilitates the assembly operations of the timepiece.
• the angular positioning of the second display member relative to the first display member, constituting the second frame of reference is representative of the variations in the value of the second piece of information. It is therefore no longer necessary to provide an additional dial for displaying the second information.
• the first display member may carry a graduated element constituting the second reference frame, defining a scale relating to the value of the second information and along which the second display member moves. according to the variation of said second information.
• the first display member comprises a needle.
• the second display member may include an index.
• the first display member may be, for example, the hour hand, a date indicator hand, or a pointer indicative of the waking time, the second associated display member then being an index respectively indicating the reserve. of walking, the cycle of years or the state of the ring.
• the second display member may comprise two fins disposed symmetrically with respect to a longitudinal axis of the first display member, the first fin being secured to a first connecting wheel kinematically connected to the output.
• the differential gearing, the second rotating drive means of the second display member further comprising a second connecting wheel secured to the second fin, mounted rotatably coaxially with the second differential, said second connecting wheel being kinematically connected to the first connecting wheel by means of a gear train, said gears being rotatably mounted on integral axes of the first drive means in rotation of the first gear member; display.
• each wing of the second display member moves in synchronism with the first display member when the value of the second piece of information is constant, and moves moreover with respect to the second frame of reference as a function of the variation of the value of the second piece of information. the second piece of information, in a movement opposite to that of the other fin.
• the display device may comprise a third rotary display member displaying a third piece of information by its position relative to a third coaxial frame of reference to the third display member, the value of the third information that can vary independently of the value of the first information and the value of the second information, said third display member having the form of an index rotatably mounted coaxially with the first and second display members, and cooperating with third rotational drive means in connection with a third information handling mechanism, said third rotational drive means being arranged such that the third reference frame moves in synchronism with the first display member.
• the invention also relates to a timepiece comprising a display device as described above.
• FIG. 1 is a schematic perspective view of a first variant of the device of the invention
• FIG. 2 is a front view of said first variant
• FIGS. 3a to 3c are top views of various alternative embodiments of the first and second display members used in the invention
• FIG. 3d is a view from above of an embodiment variant of first, second and third display members used in the invention
• FIG. perspective view of another variant of the device of the invention
• FIG. 5 is a top view in transparency of FIG. 4,
• FIG. 6 is a sectional view of the display members used in this other variant
• FIGS. 7a, 7b and 7c are perspective views showing different positions of the display device of the variant represented in FIGS. 4 to 6; , depending on the variation in the value of the second piece of information, and
• FIG. 8a and 8b are top views showing two positions of another embodiment of the display members according to the value of the second information. Mode (s) of realization of the invention
• a first rotary display member 2 is constituted by a pointer 3 indicative of the waking time, a first frame being, in a conventional manner, the dial 75 of the timepiece indicating the hours.
• a second rotary display member 4 consists of an index 5 indicating the state of the alarm clock "on” or "off".
• the various parts of the watch movement are shown schematically. The skilled person knows how these different pieces are assembled together to obtain a timepiece.
• the first display member 2 is designated by the term "needle”, the first information being the waking time, and the second display member 4 is designated by the term “index”, the second information being the state of the alarm clock, whose value is either "on” or "off”.
• the body of the needle 3 is extended by a rounded base 6 which comprises an openwork 7 corresponding to the letters of "on” and an openwork 8 corresponding to the letters of "off", as shown more particularly in Figures 3c and 3d.
• the base 6 of the needle 3 constitutes a second reference, that is to say the reference frame of the index 5.
• the base 6 of the needle 3 also comprises an orifice 9 whose function will be described below.
• the needle 3 is carried by a tube 12 which it is secured, said tube 12 being rotatably mounted around the shaft 10 of the needle 3 fixed to the frame
• the tube 12 carrying the needle 3 is itself secured to a wakening wheel 13 which cooperates with a conventional wakening time adjustment mechanism (not shown), thereby to cause the rotation of the tube 12 and the needle 3 when setting the wake time.
• the waking wheel 13 secured to the tube 12 constitutes the drive means of the needle 3.
• the index 5 has the shape of an angular sector corresponding to the rounded shape of the base 6 and is terminated by a ring 11 provided to be mounted around the shaft 10 of the needle 3, so that the base 6 of the needle 3 and the index 5 are coaxial.
• the index finger 5 is made in a contrasting color and is placed under the base 6 of the needle 3 so that the index finger 5 is visible, in top view, only through the openwork "on" 7 or "off" 8.
• the index 5 is carried by a tube 14 which it is secured, said tube 14 being rotatably mounted about the axis of rotation 10 of the needle 3, the tubes 12 and 14 carriers respectively of the needle 3 and index 5 being concentric and movable about the same axis 10. As seen above, the index 5 and the tube 14 are arranged so that the index 5 is under the needle 3.
• the tube 14 carrying the index 5 is itself secured to a connecting wheel 15, disposed concentrically above the wakening wheel 13.
• the connecting wheel 15 is mounted rotatably around the wheel. axis of rotation 10 of the needle 3.
• the connecting wheel 15 cooperates with a differential gear 16 with two inputs and an output.
• the differential gear 16 comprises a planet carrier 17 consisting of a wheel whose axis is fixed to the frame of the timepiece.
• the satellite carrier 17 carries a satellite 18 mounted free on an axis integral with the planet carrier 17 and a sun gear 19 mounted coaxially with the planet carrier 17.
• the sun gear 19 is secured to a secondary wakeup wheel 20, arranged in order to mesh with the wakeup wheel 13.
• the planet carrier 17 also carries a ring 21, disposed coaxially with respect to the planet carrier 17.
• the ring 21 has an internal toothing arranged to cooperate with the satellite 18 and an external toothing arranged to cooperate with the mechanism (not shown) managing the activation of the alarm, generating a transition from the "on" state to the "off” state and vice versa.
• the planet carrier 17 comprises an external toothing arranged to mesh with the connecting wheel 15.
• the differential gearing 16 and the connecting wheel 15 extended by the tube 14 carrying the index 5 constitute the drive means of said index 5.
• the first input of the differential gear is constituted by the sun gear 19 driven by the secondary wakeup wheel 20 itself driven by the wakening wheel 13.
• the second input of the differential gear is constituted by the ring 21 controlled by the mechanism controlling the activation of the alarm, and more particularly by the passage between the "on" and "off” states.
• the output of the differential gear is constituted by the satellite carrier 17 whose outer toothing meshes with the connecting wheel 15.
• the connecting wheel 15, integral with the tube 14 carrying the index 5 rotates at the speed of the wakeup wheel 13, corrected by the variations of the state of the alarm clock.
• the skilled person can calculate the number and shape of the teeth, the dimensions of the satellite and the dimensions of the different wheels and crown so that when the ring is fixed, the second information does not vary, the index displaying the second information moves in synchronism with the needle displaying the first information.
• the gear ratios are chosen and calculated so that when the second gear information varies and causes the displacement of the ring, the direction of rotation of the connecting wheel allows the rotation of the index in the desired direction according to the new value to be displayed.
• the ring 21 does not move relative to the frame.
• the sun gear 19 meshes then with the satellite 18 which rolls on the toothing inner ring 21 fixed.
• the satellite 18 rotates the planet carrier 17, which meshes with the connecting wheel 15, itself causing the index 5 to rotate in synchronism with the needle 3.
• the index 5 therefore remains fixed with respect to the needle 3 (and therefore with respect to the second reference), animated by its own rotational movement with respect to the first reference.
• the mechanism managing this information cooperates with the ring 21 and causes its movement, so that the speed of rotation of the satellite 18 varies.
• the movement of the planet carrier 17 and then of the connecting wheel 15 varies, so that the index 5 moves further in its frame of reference as a function of the variation of the state of the awakening function, the makes differential gearing. More particularly, if the index 5 is in the "off" position, the activation of the awakening function causes the clockwise rotation of the connecting wheel 15 so that the index 5 goes to the "on” position.
• the connecting wheel 15 rotates counter-clockwise to return the index finger 5 to the "off” position, the needle 3 being always animated by its own rotational movement with respect to the first reference frame.
• the display device can display, on the one hand, the time of the current time by means of the hand 25 and, on the other hand, the power reserve by means of the index 26.
• the base 27 of the needle 25 has graduations 28 corresponding to the power reserve and constitutes the second reference, relative to the index 26.
• the index 26 moves in synchronism with the needle 25 so that the index finger 26 indicates the same graduation 28.
• the needle 25 is always animated by its own rotational movement relative to the first frame, depending on the passage of time.
• the display device of the invention can also be used to display the date on the one hand by means of a needle 30 and on the other hand the cycle of years by means of an index 31 formed for example of a colored angular sector moving under the base 32 of the needle 30, as the index 5 of the alarm function described above.
• the display device can be used to display three information that can vary independently of one another, by means of a needle and two indexes.
• such a device comprises for example a date hand 35 movable in a first repository, and having a base 36 constituting two other referentials in which evolve respectively an index 37 indicating the cycle of the years and an index 38 indicating the status of the power reserve.
• the device comprises two differential gears as described above, each being kinematically connected by a first input to the date mechanism and an output at its respective index, one being kinematically connected by a second input to the managing mechanism the cycle of years, the other being connected kinematically by a second input to the power reserve mechanism.
• Figures 4 to 7 illustrate another variant of the display device of the invention.
• the first display member 40 consists of a pointer 41 indicating the time, the first reference being the dial 75 of the timepiece indicating the hours.
• the second display member 42 consists of two fins 43, 44, arranged symmetrically with respect to the longitudinal axis of the needle 41, indicating the state of the power reserve of the timepiece.
• the first display member 40 is designated by the term "hour hand" 41, the first information displayed being the time
• the second display member 42 is designated by the term "fins" 43, 44, the second information displayed being the state of the power reserve.
• the power reserve varies between a maximum value for which the fins 43, 44 are aligned with the hour hand 41 when the state of the power reserve is at its maximum level, and a minimum value for which the fins 43, 44 are open in a maximum position, indicating that the timepiece no longer has energy.
• the hour hand 41 is a dolphin needle, the body of the hour hand 41 being extended by a base 45 in the form of a tip, which constitutes the second reference, relative to the fins 43, 44.
• the hour hand 41 and the first fin 43 are made in the same manner as the waking needle 3 and the index 5 described above. More particularly with reference to Figure 6, the hour hand 41 is carried by a tube hours 47 which it is secured. Said hour tube 47 is rotatable about the carriageway 46 carrying the minute hand (not shown), the carriageway 46 defining the axis of rotation of the hour hand 41 and the rotation axis of the second hand repository.
• the hour tube 47 is itself integral with a hour wheel 48 which manages the evolution of hours in cooperation with the timer wheel and the gear train (not shown). The hour wheel 48 thus rotates the tube 47 and the hour hand 41.
• the first fin 43 is carried by a first tube 49 of which it is integral, said tube 49 being rotatably mounted around the 46, concentrically around the hour tube 47.
• the first tube 49 carrying the first fin 43 is integral with a first connecting wheel 50 disposed concentrically above the hour wheel 48.
• the first connecting wheel 50 is rotatably mounted coaxially with the carriageway 46.
• the second fin 44 is carried by a second tube 51 of which it is integral, said second tube 51 being rotatably mounted around the axis defined by the roadway 46 between the hour tube 47 and the first tube 49.
• the hour tube 47, the first 49 and the second 51 tubes are therefore concentric.
• the second tube 51 carrying the second fin 44 is integral with a second connecting wheel 52 arranged concentrically between the hour wheel 48 and the first connecting wheel 50.
• the second connecting wheel 52 is mounted to rotate coaxially with the 46.
• the first connecting wheel 50 cooperates with a differential gear 53 with two inputs and an output identical to that described above, and comprising a satellite carrier 54 carrying a satellite 55, a sun wheel 56, and a crown 57.
• the sun wheel 56 is secured to a secondary hour wheel 58, arranged to mesh with the hour wheel 48.
• the sun wheel 56 thus progresses by one revolution in twelve hours.
• the external toothing of the crown 57 is arranged to cooperate with the mechanism managing the state of the power reserve (not shown).
• the planet carrier 54 is kinematically connected to the first connecting wheel 50 by means of a first train of two intermediate wheels 60, 61, the wheel 60 meshing with the toothing of the planet carrier 54, and the wheel 61 meshing with the first binding wheel 50.
• the dimensions and the number of teeth of the intermediate wheels 60, 61 are calculated so that, when the power reserve is constant and the ring 57 is fixed, the second frame and the first wheel 50 move in synchronism with the hour wheel 48, the first vane 43 then moving in synchronism with the hour hand 41.
• the second connecting wheel 52 is kinematically connected to the first connecting wheel 50 by means of a second gear train, consisting of three wheels 62, 63, 64.
• the wheel 62 is mounted free to rotate on a axis integral with the hour wheel 48. It meshes with the wheel 63 also mounted on an axis integral with the hour wheel 48.
• the wheel 63 is secured to the wheel 64 which in turn drives the second connecting wheel 52.
• the first 50 and second 52 connecting wheels secured respectively to the first 49 and second 51 tubes which respectively support the first 43 and second 44 fins, rotate at the speed of the hour wheel 48, corrected by the variations of the reserve walk.
• the fins 43, 44 have a movement of the same amplitude relative to the hour wheel, in opposite directions.
• the wheel 62 transmits no movement to the wheels 63 and 64 since it is mounted on the hour wheel 48 and meshes with the first connecting wheel 50 which also progresses at the speed of the hour wheel 48.
• the wheel 64 in turn drives the second connecting wheel 52 at the speed of the hour wheel 48, so that the fins 43, 44 remain fixed relative to the hour hand 41, animated with its own rotational movement, as shown in Figure 7a.
• the hour hand 41, the fins 43, 44 and their reference system therefore progress at the same speed and perform a dial revolution in twelve hours.
• the mechanism managing the power reserve causes the ring 57 so that the speed of rotation of the satellite 55 varies.
• the movement of the planet carrier 54, of the first connecting wheel 50, then of the second connecting wheel 52 varies, so that the fins 43, 44 move moreover in their frame of reference as a function of the variation of the state of the power reserve, due to the differential gearing.
• the variations are transmitted to the first connecting wheel 50 which progresses in the clockwise direction, then the variations are transmitted to the second connecting wheel 52 which progresses in the counter-clockwise direction, so that the fins 43, 44 deviate from each other symmetrically on either side of the hour hand 41 as shown in FIG.
• the hour hand 41 being always driven by its own movement. rotation. If the reserve decreases, the variations are transmitted to the first connecting wheel 50 which progresses in the counterclockwise direction, then the variations are transmitted to the second connecting wheel 52 which progresses in the clockwise direction, so that the fins 43 , 44 come closer to each other, in a movement of the same amplitude.
• the read mode of the value of the power reserve is intuitive since it is performed solely with respect to the perception of the position of the fins 43, 44 relative, for example, to the base 45 of the needle 41.
• the kinematic connection between the ring 57 and the mechanism managing the state of the power reserve can be arranged so that a rotation of 45 ° of the ring 57 causes a rotation of the vanes 43, 44 of 90 ° in maximum position, when there is no more energy, as shown in Figure 7c.
• a gear multiplier or gear reducer between the mechanism managing the state of the power reserve and the ring 57, so that a determined number of degrees of rotation of the power reserve wheel causes a rotation of 45 ° of the ring 57 when there is more energy.
• the hour hand can be replaced by a minute hand with fins indicating the power reserve.
• the time can then be displayed by means of a time disc visible through a window.
• the needle 70 for displaying the first information carries an element 71 in the form of a circular arc having a graduation 72 in connection with the second displayed information.
• This element 71 graduated is the second reference.
• the graduation is symmetrical so that each fin 73, 74 moves in an opposite movement along its respective graduation 72 as the second information varies, the first information display pointer 70 still being animated with its rotational movement in the first repository.
• the second differential can be independent of the first display member. In this case, there is provided a mechanism kinematically linking the drive means of the first display member to the second differential so that it moves in synchronism with said first display member.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Electromechanical Clocks (AREA)

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Citations (3)

• 2008
  • 2008-01-11 EP EP08100351A patent/EP2078993A1/de not_active Withdrawn
• 2009
  • 2009-01-08 WO PCT/EP2009/050155 patent/WO2009087185A1/fr active Application Filing
  • 2009-01-08 EP EP09701123.3A patent/EP2229608B1/de active Active

Patent Citations (3)

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