Abstract:
A timepiece movement for varying the arrangement of the different displays includes a first module provided with a first frame and at least a first mobile rotatingly mounted on the first frame, a second module provided with a second frame and at least a second mobile rotatingly mounted on the second frame, the first and second mobiles being kinematically connected to each other, elements for positioning and elements for attaching the modules to each other and associated with the first and second frames. The positioning elements are placed concentrically relative to the rotation axis of one of the first and second mobiles, and are arranged for allowing the relative positioning of the two modules in several angular positions relative to the rotation axis of the mobile to which the positioning elements are concentric. One of the first and second modules is a base module including a platen and a barrel, the barrel defining the first and the second mobile.

Description:
TECHNICAL FIELD 
     The present invention concerns a timepiece movement comprising a first module provided with a first frame and at least a first wheel assembly rotatingly mounted on the first frame, a second module provided with a second frame and at least a second wheel assembly rotatingly mounted on the second frame, the first and second wheel assemblies being kinematically connected to each other, positioning means and means for fastening the modules to each other, associated with the first and second frames, said positioning means being arranged concentrically to the axis of rotation of one of said first or second wheel assemblies and being arranged to allow relative positioning of the two modules in several angular positions in reference to the axis of rotation of the wheel assembly to which the positioning means are concentric. 
     BACKGROUND OF THE INVENTION 
     Such a timepiece movement is for example shown in patent application EP 0 354 194. This document describes a timepiece comprising a movement forming a first module mounted in a case and including an arbor defining the axis of the movement. This first module comprises a wheel whereof the axis of rotation is the axis of the movement, said wheel constituting the first wheel assembly. The piece also comprises a second module to display the time, and including an arbor defining the axis of the module. This second module comprises a wheel cooperating with the wheel of the movement, and constituting the second wheel assembly. The display module is fastened to the case and to the movement using coupling elements that are arranged symmetrically around the axis of the case in order to allow the axis of the display module to be arranged in different positions having the same eccentricity around the axis of the case. 
     If the movement manufacturer wishes to differently position elements of the movement other than those of the display module, it is necessary to design another structure of the movement and as a result another plate, the holes of which will have been adapted for this new arrangement. This requires the manufacturer to design, manufacture and store as many plates as there are positioning alternatives of the different elements. 
     Other solutions have been proposed in order to be able to vary the time display. Thus, “multi-function” plates were developed. Such a plate is for example described in patent application EP 1 826 636. The plate is designed such that different complementary dials and the corresponding display mechanisms can be present or not present on the main dial around hands displaying the time, depending on the manufacturer&#39;s wishes. However, this solution requires that the displays one wishes to use always be positioned at the same locations. If one wishes to change the arrangement of the complementary displays, it is again necessary to provide for as many plates as there are positioning alternatives of the different elements. 
     One aim of the present invention is therefore to offset these drawbacks, by proposing a timepiece movement making it possible to vary the arrangement of the different displays depending on the manufacturer&#39;s wishes, using the same plate, and without having to modify its design. 
     BRIEF DESCRIPTION OF THE INVENTION 
     To this end, and according to the present invention, proposed is a timepiece movement comprising a first module provided with a first frame and with at least a first wheel assembly rotatingly mounted on the first frame, a second module provided with a second frame and at least a second wheel assembly rotatingly mounted on the second frame, the first and second wheel assemblies being kinematically connected to each other, positioning means and means for fastening the modules to each other, associated with the first and second frames, said positioning means being arranged concentrically to the axis of rotation of one of said first or second wheel assemblies and being arranged to allow a relative positioning of the two modules in several angular positions in reference to the axis of rotation of the wheel assembly to which the positioning means are concentric. 
     According to the invention, one of said first and second modules is a basic module comprising a plate and a barrel, said barrel constituting the first, second wheel assembly, respectively. 
     Thus, the manufacturer then only has a single type of module to manufacture and store. The different movement models can be realized from same first and second modules and differ by modifying the relative positioning of the two modules depending on the different angular positions relative to each other. 
     Advantageously, said positioning means can comprise a plurality of orifices distributed concentrically to the first wheel assembly, and at least one foot arranged to be able to be engaged in said orifices, the orifices and the foot being arranged some on the frame of the first module, the others on the frame of the second, and arranged to cooperate with the fastening means. In particular, the positioning means can comprise pillars fastened on the frame of the second module and extended by a foot arranged to be engaged in one of the orifices distributed on the frame of the first module. 
     According to the alternatives, said orifices can assume the form of continuous oblong annular segments or be discrete, of a shape with axial symmetry, round for instance. 
     Advantageously, the movement according to the invention can also comprise means for displaying the hours and minutes, and positioning organs of said means for displaying the hours and minutes, arranged concentrically to the first wheel assembly and arranged to allow positioning of the means for displaying the hour and the minutes according to several angular positions around the first wheel assembly. 
     In this case, the movement can comprise connecting means arranged to allow a kinematic connection between the first wheel assembly and the means for displaying the hour and the minutes, regardless of the position of the means for displaying the hour and the minutes around the first wheel assembly. 
     The movement can also comprise a setting mechanism arranged to cooperate with the means for displaying the hour and minutes, regardless of the position of the means for displaying the hour and minutes around the first wheel assembly. 
     According to one preferred embodiment, the first module can be a basic module comprising a plate having a central axis, and a barrel, said barrel constituting the first wheel assembly. Preferably, the barrel is mounted on the central axis of the plate. 
     Advantageously, the means for displaying the hour and minutes can be kinematically connected to the barrel, without kinematic connection with the second module. 
     The second module can comprise at least one going train kinematically connected to the first wheel assembly and one of the different wheel assemblies of which can constitute the second wheel assembly. In particular when the barrel is mounted at the center of the plate, the going train can be kinematically connected to the barrel, and the center wheel can constitute the second wheel assembly. 
     The present invention also concerns a timepiece comprising a movement as described above. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Other features of the present invention will appear more clearly upon reading the following description, done in reference to the appended drawings, in which: 
         FIG. 1  is a bottom view of a movement according to the invention, 
         FIG. 2  is a perspective view of a second module according to the invention, 
         FIG. 3  is a top view of an alternative of a movement according to the invention, the hands being at 3 o&#39;clock, 
         FIG. 4  is a view similar to  FIG. 3 , but the hands being in another position, 
         FIG. 5  is a view similar to  FIG. 4 , but the second hand being in the center, 
         FIG. 6  is a top view of another alternative of a movement according to the invention, the hands being in the center, 
         FIG. 7  is a view similar to  FIG. 6 , but the second hand being at 6 o&#39;clock, and 
         FIG. 8  shows a cross-sectional view of the pillar used in the invention for the assembly of the modules. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     A first alternative of a timepiece movement is shown in  FIGS. 1 to 5 . 
     According to this alternative, the movement  1  comprises a first module, subsequently referred to as the basic module  2 , which comprises a plate  3  part of a first frame, and a barrel  4  housing a spring and constituting the first wheel assembly, rotatingly mounted on the central axis  5  of the plate  3 . It is quite obvious that the plate can be in drum or bar form, the barrel being able to be offset relative to the center. 
     In the illustrated alternative, the basic module  2  also comprises a winding stem  6  classically performing the winding functions of the barrel spring and setting of the hands. For this, the winding stem  6  for example comprises a winding pinion  7  and a castle-wheel  8  making it possible to implement one or the other of the functions of the winding stem  6 . 
     It is quite obvious that, in other alternatives of the invention, the winding stem can belong to another module, independent from the basic module  2 . 
     In reference more particularly to  FIG. 1 , the winding mechanism of the barrel spring is classic. It more specifically comprises a ratchet wheel  9  and a pawl  9   a  cooperating with the ratchet wheel  9  to prevent it from withdrawing, the ratchet wheel  9  being kinematically connected with the winding pinion  7  via a setting wheel train  10 . This mechanism is known by those skilled in the art and will not be described in more detail. 
     The movement  1  according to the invention comprises a second module, subsequently referred to as the going train module  15 , shown more particularly in  FIG. 2 . 
     This going train module  15  comprises an upper going train module plate  16  and a lower going train module plate  17 , in annular sector form, constituting the second frame. A going train, comprising a center wheel  18 , a third wheel  19  and a second wheel  20  and the associated pinions, is rotatingly mounted between the upper  16  and lower  17  going train module plates. The center pinion is arranged to mesh with the barrel  4  and constitutes, with the center wheel, the second wheel assembly. Between the upper  16  and lower  17  going train module plates is also rotatingly mounted an escapement wheel assembly  21 . The going train module  15  also comprises a pallet  22  rotatingly mounted between a pallet cock  23  and the lower going train module plate  17 , and a sprung balance  24  rotatingly mounted between a balance cock  25  and the lower going train module plate  17 . All of these elements are known in themselves and will not be described in more detail. 
     The going train module  15  is mounted on the lower face of the plate  3  owing to positioning means and to fastening means associated with the plate  3  of the basic module  2  and the frame of the going train module  15 . 
     According to the invention, said means for positioning the going train module comprise:
         a plurality of orifices  30  realized on the plate, distributed concentrically to the barrel  4 , and arranged to be able to situate the going train module  15  around the barrel  4  according to different angular positions,   several pillars  31  fastened to the frame of the going train module  15  and each comprising a foot  32  arranged to be able to be engaged in one of the orifices  30  of the plate  3 , chosen as a function of the desired positioning of the going train module  15 .       

     As shown more precisely in  FIG. 8 , the pillar  31  is fastened to the upper going train module plate  16  via a screw  33 . Cleverly, the pillar  31  is extended by its foot  32  arranged so as to be able to be engaged first in an orifice of the lower going train module plate  17 , then adjusted in an orifice  30  of the opposite plate  3 . The assembly is maintained by a screw  34 . The pillar  31  and its foot  32  are arranged to cooperate with the screws  33  and  34 , which constitute the means for fastening the modules  2  and  15  together. 
     The orifices  30  assume the form of continuous oblong segments. It is quite obvious that they can also be discrete, and for example assume the form of circular holes distributed over the entire perimeter of the plate  3  concentrically to the barrel  4 , with a frequency such that the feet  32  can be engaged there in several positions. 
     In reference more specifically to  FIGS. 3 to 5 , the movement  1  according to the invention also comprises means for displaying the hour and minutes, and positioning organs of those display means, arranged concentrically to the barrel  4  and arranged to allow positioning of the means for displaying the hour and minutes according to several angular positions around the barrel  4 . 
     The means for displaying the hour and minutes comprise connecting means providing the kinematic connection with the barrel  4 , regardless of the position of the means for displaying the hour and minutes around the barrel  4 . 
     In reference more specifically to  FIG. 3 , which illustrates a first possible position of the means for displaying the hour and minutes placed at 3 o&#39;clock, the means for displaying the hour and minutes comprise an hour hand  40  supported by an hour wheel  41 , a minute hand  42  supported by a cannon-pinion  43 , which is assembled to a pinion  44  by indenting. The pinion  44  is arranged to mesh with the barrel  4 . Moreover, a minute wheel  45  and a minute-pinion  46  are provided rotatingly mounted on the axis  5  of the plate  3  which ensure the kinematic connection between the barrel  4  and the means for displaying the hour and minutes, without connection with the going train. The minute-pinion  46  is arranged to mesh with the hour wheel  41  and the minute wheel  45  is arranged to mesh with the cannon-pinion  43 . 
     The positioning organs  47  include an axis designed to support the indented pinion  44  and the cannon-pinion  43 , and circular orifices distributed in a circle arc on the plate  3  around the barrel  4  and arranged to receive that axis, according to different positions relative to the barrel  4 . 
     In this alternative, the second is displayed via a second hand  48  supported by the second wheel  20  of the going train module  15 , and provided with an axis  50 . The going train module  15  was positioned on the plate  3  at the appropriate location to obtain the desired position of the second wheel  20 . A recess  49  allowing the passage of the axis  50  of the second hand  48  is then provided in the plate  3 . The recess  49  is in the shape of an annular segment, concentric to the barrel  4 , in order to be able to modify the position of the second hand  48  as a function of the position of the going train module  15 , as will be seen later. 
     Also provided is a setting mechanism arranged to cooperate with the means for displaying the hour and minutes, regardless of the position of those means around the barrel  4 . 
     This mechanism classically comprises the winding stem  6 , elements allowing the movement of the castle-wheel  8  until it meshes with a first setting wheel  51 . The latter meshes with a second setting wheel  52  that is arrange to mesh with the cannon-pinion  43 . 
     During the normal operation of the movement  1 , the barrel  4  meshes with the indented pinion  44  which is then integral with the cannon-pinion  43  that drives the minute hand  42 . The cannon-pinion  43  meshes with the minute wheel  45  and its minute-pinion  46  meshes with the hour wheel  41  that drives the hour hand  40 . 
     For setting, the castle-wheel  8  of the winding stem  6  is positioned so as to mesh with the setting wheel  51 , which meshes with the setting wheel  52 . To adjust the minutes, the latter meshes with the cannon-pinion  43  which, due to the indenting, rotates on the indented pinion  44  without driving it. The cannon-pinion  43  meshes with the minute wheel  45  driving the minute-pinion  46  which cooperates with the hour wheel  41  to adjust the hours. 
     It is obvious that the number of setting wheels can vary depending on the dimensions and arrangement of the means for displaying the hour and minutes. 
       FIG. 4 , for example, shows a movement for which the means for displaying the hour and minutes were placed in a position other than that shown in  FIG. 3 , by arranging the axis of the cannon-pinion  43  and the indented pinion  44  in another orifice  47  around the barrel  4 . All of the parts are identical to those shown in  FIG. 3 . Moreover, an additional setting wheel  53  is provided that provides the kinematic connection between the second setting wheel  52  and the minute wheel  45 . 
     It is possible to place the second hand  48  at the center of the plate  3 , as shown in  FIG. 5 , the other references also being identical to those of  FIGS. 3 and 4 . In this case, a setting wheel  54  is provided cooperating with the second wheel  20  of the going train module  15  and a second wheel  55  rotatingly mounted at the center of the plate  3 . 
       FIGS. 6 and 7  show another alternative of a movement according to the invention, for which the means for displaying the hour and minutes are situated at the center of the plate  3 . In this case, said means for displaying the hour and minutes comprise an hour hand  60  supported by the hour wheel  61 , a minute hand  62  supported by the cannon-pinion  63 . The barrel  4  cooperates with a pinion  64  assembled to a setting wheel  67  by indenting. The setting wheel  67  meshes with a minute wheel  65  integral with a minute-pinion  66 , which together form a motion-work that can be rotatingly mounted in one of the orifices provided on the plate  3 . The minute-pinion  66  is arranged to mesh with the hour wheel  61  and the minute wheel  65  is arranged to mesh with the cannon-pinion  63 . 
     The second hand  68  is also placed at the center of the plate  3 . For this, the going train module  15  has been moved and positioned on the plate  3  such that the second wheel  20  is at 6 o&#39;clock. A setting wheel  69  is then provided cooperating with the second wheel  20  of the going train module  15  and a second wheel  70  rotatingly mounted at the center of the plate  3 . 
     In the alternative illustrated in  FIG. 7 , the references being identical to those of  FIG. 6 , the second hand  68  is for example positioned at 6 o&#39;clock and is directly supported by the second wheel  20  of the going train module  15 . The setting wheel  69  and the second wheel  70  are then no longer necessary. 
     According to the invention, the second hand can occupy different positions relative to the barrel  4 . For this, the going train module  15  can be arranged on the lower face of the plate  3 , according to different positions, around the barrel  4 , by introducing the feet  32  of the pillars  31  of the going train module  15  in the orifices  30  of the plate  3  at the desired locations, and by screwing them using screws  33  and  34 . 
     Moreover, the means for displaying the hour and minutes can be arranged on the upper face of the plate  3 , according to different positions, around the barrel  4 , by introducing the axis of the cannon-pinion into the orifice of the plate  3  at the desired location. 
     Thus, the movement can have different configurations, using a single plate and by modifying a minimum number of pieces. 
     In the alternative illustrated here, the going train module and the means for displaying the hour are on either side of the plate, but it is obvious that they can be arranged on the same side. The movement can also comprise a retrograde display on either side of the plate. 
     A person skilled in the art knows how to adapt the dimensions and the number of teeth of the different wheel assemblies and setting wheels to respect the kinematic connections between the different elements and the speeds of rotation of the different wheel assemblies, regardless of the positions of the going train module and the means for displaying the hour and minutes, around the barrel. 
     It is obvious that the modules can present other functions, such as power reserve modules, modules for displaying the date, time zones, or chronograph modules, comprising a wheel assembly in kinematic connection for example with the barrel. These modules can then be used separately or in combination, and be arranged on the plate or relative to other modules without it being necessary to change the plate or modules. 
     It is also obvious that the invention is not limited to the example described, and that the basic module comprising the barrel can be positioned such that the barrel is not at the center of the movement. Likewise, it is obvious that the positioning means of the modules can be arranged concentrically to the axis of rotation of the wheel assembly of another module, different from the barrel, the module comprising the barrel then being able to occupy several angular positions in reference to the axis of rotation of this wheel assembly to which the positioning means are concentric. 
     Thus, owing to the features of the movement according to the invention, it is possible to produce movements allowing the display of different functions, in combinations or independently of each other, the display being able to be done at different locations of the dial, without, however, making changes to the frame.