EP1791038A1 - Timepiece movement - Google Patents

Abstract

The movement has an intermediate connection block (57) mounted pivoting around an axis (X) that extends along thickness of the movement. The connection block has two cylindrical fingers (62, 63) each arranged for exerting a force on respective zero setting hammers (4, 40). The fingers are situated on sides of a reception zone (100) following the direction of the axis. The hammers are intended to cooperate with a push button (60) in response to the activation of the button.

Description

Technical area

The present invention relates to a movement for a timepiece of mechanical or automatic type. In particular, the invention relates to a control device, implemented in such a movement, intended to cooperate with an external control member once the movement mounted in a timepiece box.

More specifically, the watch movement according to the invention comprises at least first and second movable control elements relative to a frame of the movement and intended to cooperate with the same external control member in response to an activation of the latter.

State of the art

Such a case arises, for example, in a watch movement comprising means for implementing a chronograph function, the display means of which include chronograph, minute and hour counters. In this type of room, the available space may be missing on one of the faces of the movement, so that parts constituting the same mechanism may be arranged on the bridge side, the other side of the dial movement. For example, in some chronographs, the chronograph and minute counter and reset devices are arranged on the bridge side of the movement, the hour counter control and reset devices being arranged on the dial side. some movement. A watch fitted with such a movement must have a single control device to reset all the counters simultaneously. In other words, this control member must be arranged so as to act simultaneously on the reset devices, on the one hand, the chronograph and minute counters and, on the other hand, the hours counter.

Such movements, known from the state of the art, include first and second reset levers of general shapes flattened in a plane parallel to the mean plane of the movement. Typically, one of the two levers has a curved portion relative to its general plane, at the periphery of the movement, to define a bearing surface perpendicular to the mean plane of the movement. The second lever also has a bearing surface arranged at the periphery of the movement, possibly but not necessarily, curved towards the first lever. When the movement is mounted in a watch case, the two bearing surfaces are situated facing the inner end of an external control member and make it possible to transform the translational movement of the latter into a pivoting movement. each of the reset levers. Another respective portion of each lever then acts on a hammer, directly or via an additional mechanism, to rotate it in turn or to make it undergo a translation movement.

Such structures, however, pose a number of problems of positioning, tolerances and adjustment.

In the particular case of a chronograph movement with an hour counter, these problems are all the more important as they may have consequences for the quality and / or simultaneity of the reset of the display means of the display units. measured times. Indeed, the movements of the reset hammers, caused by the movements of the levers controlled by the external control member, must be extremely accurate. Such precision requires a great deal of control over the connection between the control member and the reset levers.

The requirement of this accuracy is even greater in the case of a movement using a vertical type clutch and in which at least one hammer is not released during a reset operation. , but is actively lowered by the action of the user. In this case, the movement of the hammer depends directly on that of the reset lever.

Disclosure of the invention

The main object of the present invention is to overcome the disadvantage of the abovementioned prior art, by proposing a watch movement having a structure offering greater flexibility in the sizing and positioning of an external control member intended to act jointly on two movement control elements. Such flexibility is the result of better control of the transmission of movements of the external control member to the movable control elements of the movement.
To this end, the present invention relates to a movement of the type described above, characterized in that it comprises an intermediate linkage unit pivotally mounted about an axis X extending substantially along the thickness of the movement, on a building element of the movement. The intermediate block has a receiving zone, remote from the X axis, intended to undergo a force in response to activation of the control member. In addition, the intermediate block comprises at least two contact zones, each of which is arranged to exert a force on one of the respective control elements, the contact zones being situated respectively on either side of the next receiving zone. the direction of the X axis.

Thanks to these characteristics, the control elements, on the one hand, and the intermediate link block, on the other hand, can be positioned precisely with respect to the frame of the movement, thus guaranteeing a good relative positioning of all of these elements. elements. In addition, in the case where the intermediate link block is arranged to enter directly into contact with the external control member, when the latter is actuated, the positioning and sizing of its receiving zone are considerably more flexible than in the case of the bearing surfaces mentioned above, in relation with the state of the art. The reception zone can be made with a sufficiently large surface to allow a greater flexibility, compared to the state of the art, in the choice of the structure of the organ of external control as well as in its positioning in a watch case in which the movement must be housed.

Preferably, the movement according to the present invention further comprises means for implementing a chronograph function including, in particular, chronograph, minute and hour counters, as well as levers and hammers for resetting . The movement also comprises a hollow pin around which is engaged, rotatably, the intermediate block connecting, that being arranged to act on the reset hammers. The tenon preferably has an annular bead on which the intermediate block pivots about the X axis and arranged so that the block can also pivot slightly about at least a second axis perpendicular to the X axis. This last characteristic advantageously makes it possible to increase the allowable tolerances on the adjustment of the hammers with respect to the counters, to the extent that the conventional clock settings of hammers can be omitted. Indeed, the additional pivoting of the intermediate block provides a dynamic adjustment function of the hammer stroke of the hour counter relative to hammers minutes and seconds.

Brief description of the drawings

Other features and advantages of the present invention will appear more clearly on reading the detailed description of a preferred embodiment which follows, made with reference to the accompanying drawings given by way of non-limiting examples and in which:

FIG. 1 represents a simplified elevational view of a first portion of the chronograph movement resetting members according to a preferred embodiment of the present invention;

FIG. 2 represents a simplified elevational view of a second part of the resetting members for the chronograph movement of FIG. 1;

FIG. 3 is a perspective view of a construction detail of the movement of FIG. 1, and

FIG. 4 is a sectional view of a construction detail of the movement, according to a preferred variant, made in a plane perpendicular to the mean plane of the movement and containing the line L of FIG. 3.

Mode (s) of realization of the invention

The chronograph watch movement according to a preferred embodiment of the present invention is intended to be arranged in an analog display chronograph watch (not shown) of conventional type.

Such a watch comprises in particular respective display members seconds, minutes and hours measured, respectively carried by counters of seconds, minutes and hours.

Figures 1 and 2 show, in a simplified manner, constituent elements of the clockwork according to the present invention involved especially during the reset of the seconds counters, minutes and hours. The elements of the watch movement essential to understanding the invention have been mainly represented, for the sake of clarity.

On the other hand, in the following description, the position of certain components is sometimes defined with reference to a time. This position corresponds to the position of the index displaying the given time on a conventional dial.

In Figures 1 and 2, a peripheral portion of the plate 1 of the movement has been shown in the region intended to cooperate with external control members (not shown) in the corresponding timepiece. A reset lever 2 is arranged to be actuated by an external reset control member, shown schematically by an axis line bearing the reference R in the figures. More specifically, the lever 2 has a pivot-type connection, of axis X, with the plate 1 and follows a rotational movement relative to the plate in response to a pressure exerted on the external control member.

On the other hand, the position of a time-setting member or rod (not shown) has also been shown schematically by an axis line bearing the reference T. Similarly, the position of an additional control member has been shown schematically by a center line bearing the reference S, the control member being intended to activate or deactivate the chronograph function. By way of non-limiting indication, it may be noted that when the watch movement is mounted in a box to assemble a timepiece, the axis R is positioned at four o'clock while the T-axis is positioned at three o'clock and the S axis at two o'clock.

A reset hammer 4 is positioned relative to the platen, so as to be moved in response to an action on the external reset control member.

The nature of the displacement of the hammer 4 is not directly related to the present invention and can be of any type suitable for the implementation of the latter. Thus, in the present embodiment, it is arranged so as to be pivotable relative to the plate 1 of the watch movement, about the axis X. In addition, it can be seen in FIG. 1 that the base 5 of the hammer 4 comprises a circular opening 6 which is superimposed on a similar opening 7 of the reset lever and whose function will be explained later, in connection with the description of FIG.

The reset lever 2 comprises an additional pin 8, in its part remote from the axis X, intended to serve as a support for the end of a spring (not shown) exerting on the lever 2 a force, schematized by an arrow referenced F1 in Figure 1, tending to maintain it in its rest position, that is to say in the position shown in thick lines in Figure 1. It is preferably provided a notch made in a conventional manner on the spring to allow quick action of the reset command.

The hammer 4 is provided with two bearing surfaces 9 and 10 intended to be moved in contact with cores 11 and 12 during the reset operation of the chronograph counters.

Hearts 11 and 12 and hammers have been schematically represented to the extent that they are conventional and do not present any particular difficulty for those skilled in the art. Each of the hearts is mounted on a chronograph counter wheel (not shown) carrying an indication hand of a time unit timed.

Thus, a pointer 13 for indicating the timed second and a pointer 14 for indicating the timed minute have been schematized in the figures. The needles 13 and 14 have been represented in their initial positions in FIG. 1, which corresponds to a stop situation after resetting the chronograph function. The hammer 4 is shown in solid lines in its raised position to allow the possible rotation of the cores 11, 12 of the chronograph mobiles with respect to their respective axes of rotation 15 and 16. The hammer is also shown in fine lines with the reference 4A, when actuated by the external control member to reset the chronograph counters to zero, the cores 11 and 12 then being oriented in accordance with Figure 1.

On the other hand, there is shown a control device in Figure 1 for initiating or stopping time interval measurements.

The control device of the clockwork according to the present invention comprises in particular a control lever 17 extending substantially between the two o'clock and six o'clock positions, along the periphery of the plate 1. The general embodiment of the control lever 17 is conventional.

A first end 18 of the control lever, arranged at two o'clock, is located opposite the external control member when the movement is housed in a timepiece case.

The second end 19 of the control lever carries a control hook 20 of a type known in the state of the art. According to the preferred embodiment shown and described, the control device comprises a plate 21 made integral with the control lever 17 by means of a plurality of screws 22. The plate 21 has a shape such that it is superimposed on a part of the control lever, substantially from the three o'clock position to the second end 19. One of the screws 22, disposed at the second end 19 of the control lever, passes through a suitable hole (not visible) formed in the control hook 20 to make the latter secured to both the control lever 17 and the plate 21, while being free to pivot relative to the axis of the screw 22.

Activation of the control lever 17, by a translation of the control member along the axis S, causes a displacement of the control hook 20 acting on a rotary control element, represented here in the form of a column wheel 25.

The column wheel 25 comprises a ratchet 26, on which the control hook 20 acts, and columns 27 secured to the ratchet 26 and whose number is preferably equal to half the number of teeth of the ratchet. Thus, the column wheel 25 rotates by half a step, in the opposite direction of the clockwise direction, in response to each pressure exerted on the control lever 17, a step corresponding to the angle separating a column. of the next column. A jumper (not shown) for a column wheel is conventionally arranged to lock the ratchet toothing in each of its positions, two adjacent positions being separated by an angular half-pitch.

The columns 27 interact with a plurality of elements constituting the movement according to the present invention, according to the angular state of the column wheel 25 with respect to the plate 1.

In particular, the columns 27 control the movements of a latch 28 of the hours counter, pivotally mounted on the plate by a span screw 29. The latch comprises a pin 30 against which a spring (not shown) exerts a force F2 , in the direction of the column wheel 25, and a spout 31 cooperating with the columns 27 to rotate the latch in one direction or the other, in a known manner.

The rocker further comprises a pin 32 passing through the plate to control an hour counter mechanism (described in connection with the description of Figure 2) located on the dial side of the movement.

Figure 2 is a simplified representation of the hour meter mechanism in an elevational view.

Conventionally, the pin 32 of the hour meter rocker acts on a blocker 34, pivotally mounted on the plate, to rotate it relative to its pivot 33. The blocker 34 thus moves to alternately block and release a wheel 35 of the hour counter for driving a hand of the hours timed. The drive of the wheel 35 is made in known manner by a reference 38, itself driven from the drum of a barrel movement (not shown). The return includes a conventional friction system (not visible) to avoid damaging mechanism of the hours counter when the blocker acts on the wheel 35 or during resetting operations.

The mechanism also comprises a hammer 40 for resetting the hour counter, mounted on the plate with rotation relative to the axis X and retained by a spring (not visible) integral with the plate. The hammer is arranged to cooperate with a heart 41 carried by the hour counter in order to perform the reset of the latter. On the other hand, the hammer 40 has a base 42 disposed in the peripheral region of the plate 1, having an opening 43 of similar shape to that of the hammer 4 of the minutes and seconds counters and the reset lever 2 . The base 42 of the hammer 40 is intended to undergo a pressure when the external control member for the reset is actuated, as will be detailed below, in connection with the description of Figures 3 and 4.

It can also be seen in FIG. 2 that the blocker 34 has an end portion 44 disposed opposite the external resetting member. When the latter is actuated to act on the hammer 40, it exerts a slight pressure on the end portion 44 arriving at the end of stroke, in order to lift the blocker of the wheel 35 and allow the rotation thereof .

Figure 3 shows a perspective view in partial section of the region of the movement according to the present invention in the region towards the four o'clock position.

It is noted that a space is provided between the control lever 17 and the plate 21, in the region of the base 5 of the hammer 4 reset, the latter being interposed between the control lever 17 and the plate 21. A such structural feature makes it possible to ensure a good wedging of the base 5 of the hammer between the two portions of planes defined by the elements of the control 17 and 21. It can be provided that the distal portion of the hammer, namely that bearing the surfaces of support 9 and 10, rests on suitable support surfaces (not visible) of the chronograph bridge.

In addition, it is also apparent from this figure that the control lever 17 advantageously has a pivot about the pivot axis X of the lever 2 and the hammer 4 reset.

Note that in this configuration, a space must be provided between the reset lever 2 and the hammer 4, sufficient for the control lever 17 to move freely.

A hollow pin 52 of X axis is driven into a hole 53 adapted to the plate 1 by having a first end 54 located beyond the plate on the dial side of the movement, while its second end 55 is located in the region of chronograph bridges. The axial positioning of the pin 52 is ensured by the abutment of a bearing surface 56, formed in one piece with the tenon, against the plate.

An intermediate connecting block 57 is engaged, free in rotation, on the pin 52 by a main portion 58 having a hole 59 along the X axis. The main portion of the block extends substantially along the periphery of the plate in the direction from the four o'clock position. The four o'clock position is symbolized by the simplified representation of a pushbutton 60 arranged in the direction of the axis R of FIG.

The main portion 58 ends, substantially opposite the four o'clock position, in a second portion 61 of generally cylindrical shape with an axis parallel to the axis X. Thus, the median zone of the second portion is arranged along the axis R and defines a receiving zone (denoted by the reference 100 in FIG. 4) on which the pusher is capable of acting.

The second cylindrical portion 61 carries, on either side of the receiving zone, cylindrical fingers 62, 63 of diameter smaller than the diameter of the second portion and connected thereto by short frustoconical portions. A first finger 62 extends from the second portion into the region of the chronograph bridges, while the second finger 63 extends from the second portion into the region of the platen.

A shaft 64 is also engaged inside the tenon 52 while being free to rotate X axis. The shaft has a first end 65 cooperating with the first end 54 of the tenon, via a bead of suitable diameter, while its second end 66 is located outside the tenon, in the region of the chronograph bridges. The shaft 64 has, opposite the second end 55 of the pin, a bead similar to that of its first end. These two cylindrical beads thus define two adjusted pivoting regions of the shaft 64 with respect to the pin 52.

The shaft 64 further comprises an annular bearing surface 67 at a short distance from its second end 66, defining a first shoulder, on the dial side, and a second shoulder, on the bridge side.

As has already been mentioned in connection with the description of FIG. 1, a plurality of constituents of the movement control mechanisms according to the invention have the same axis X of rotation relative to the frame of the movement, namely in particular the plate .

Thus, along the X axis from the intermediate link block 57 towards the chronograph bridges, the block is followed by the reset lever 2, the control lever 17, the hammer 4 seconds and minutes and the plate 21.

The reset lever 2 is engaged on the post 52 so as to be rotatable thereon. In addition, the lever is rotatably connected to the intermediate connecting block 57 by a cooperation of its opening 7 with the second portion 61 of the intermediate block, their respective diameters being adapted.

The control lever 17 is driven on the shaft 64 being positioned in abutment against the first shoulder of the shaft, while the plate 21 is engaged around the second end 66 of the shaft on the side of its second shoulder.

The hammer 4 is arranged around the bearing 67 of the shaft, between the control lever 17 and the plate 21, these elements to ensure the axial retention. The opening 6 of the base of the hammer cooperates with the first finger 62 of the intermediate connecting block to make the hammer secured to the block during X axis rotation movements.

In addition, it can be seen in FIG. 3 that the first finger 62 of the intermediate block extends beyond the hammer to define a stop for a reset control spring 68. This spring exerts a pressure on the first finger in a direction opposite to the direction of the pressure exerted during the activation of the push button 60, tending to return the block 57 to its rest position, which is that represented in FIG.

Furthermore, the control lever 17 and the plate 21 have similar clearances 69 and 70, to allow the first finger 62 and the second portion 61 of the intermediate block to move from the bridges side of the main portion when the the actuation of the reset lever.

On the side of its first end 54, the pin 52 ensures the positioning and guiding of a gun 71 carrying the hammer 40 of the hours counter, the barrel being free to rotate relative to the tenon.

On the one hand, the hammer of the hour counter is driven on the barrel so as to be secured to the latter during the movements in rotation relative to the axis X. On the other hand, the second finger 63 of the intermediate block link is engaged in the opening 43 of the hour meter hammer.

The advantages of the structure according to the present invention appear clearly with the representation of FIG. 3. It can be seen that six elements constituting the control mechanisms pivot on the same axis, namely the X axis, which gives a great simplification. known structures.

In addition, the implementation of the intermediate linking block 57 allows the simultaneous rotation of three of these elements in response to the actuation of the push button 60 disposed at four hours. With this feature, the implementation of the push button in the watch case is simplified because the region of the intermediate link block capable of performing the function of the receiving zone 100 of the push button is extended. In addition, the precise positioning of the intermediate block 57 relative to the plate 1 of the movement ensures the proper positioning of the three contact zones acting on the hammer 4 seconds and minutes, the hammer 40 hours and the lever 2 of delivery at zero, with respect to these elements during the actuation of the push button. In addition, this positioning is made independent of the position and the dimensions of the end of the push button acting on the receiving zone 100 of the intermediate link block.

An additional advantage of the structure shown in Figure 3 is that the first finger 62 of the intermediate block also performs the stop function for the reset spring 72, this function traditionally requiring the establishment of a room reported extra on hammer 4 seconds and minutes.

Furthermore, a latch lever of the reset lever 2 is preferably provided. By way of example, this flip-flop may be arranged to pivot between two extreme positions depending on the state of the column wheel 25. In a position of the latter corresponding to a time measurement interval, the rocker is arranged opposite the reset lever so as to block the pivoting of the latter. In this situation, the actuation of the reset push button is disabled.

Figure 4 shows a sectional view of a detail of the control mechanisms of Figure 3, according to a preferred embodiment of the present invention.

In this figure, it can be seen that the hollow stud 52 is provided with a bead 80 arranged facing a position situated substantially at half height of the main block 58 of the intermediate connecting block 57. respective diameters of this bead 80 and the hole 59 of the intermediate block are adjusted so that the block can rotate freely relative to the pin. Insofar as the outer diameter of the stud is slightly smaller than the diameter of the hole of the intermediate block, the block is able to pivot slightly around an infinity of axes contained in the median plane of the bead 80.

Such an additional feature is particularly advantageous in the case of a chronograph movement, when the intermediate block is arranged to control the movement of the hammers. Indeed, the adjustment of the bearing surfaces of the hammers is generally a delicate operation in the assembly of a chronograph movement. This operation is even more delicate in the case of a movement such as that shown in which two hammers are arranged respectively on one side and the other of the movement. In addition to adjusting the bearing surfaces for zeroing the seconds and minutes counters relative to each other, it is necessary to precisely adjust the bearing surface intended to perform resetting the hours counter to the first two.

Typically, when the external control member 60 for the reset is actuated, the hammers 4, 40 are rotated simultaneously by the first and second fingers 62, 63 of the intermediate block. It is possible then that once the bearing surfaces for the seconds and minutes counters are in contact with the corresponding cores, the support surface for the hour meter has not quite managed to put back the heart of the hour counter in its zero position, due to a slightly short length of the hammer 40. Of course, the opposite situation is also to be considered, namely a short stroke of the hammer of the seconds and minutes counters compared to that of the hour counter.

Such a situation requires the intervention of a watchmaker to adjust the respective dimensions of the hammers during the manufacture of a conventional movement.

In the movement according to the preferred embodiment, the ability of the intermediate block 57 to rotate provides some clearance in the race of the bearing surfaces of the hammers during resetting operations. Indeed, in the situation described above, the fact that the hammer 40 of the hour counter is not in abutment will cause the pivoting of the intermediate block 57 about an axis perpendicular to the axis X intersecting the bead 80 to allow to lengthen the stroke of the corresponding bearing surface and thus a precise zeroing of the hours counter.

In addition, it can be noted that because of the large height of the second portion of the intermediate block, a sufficient lever arm can be obtained, at the second finger 63 of the block 57, to guarantee the clearance necessary for a reset. precise, without harming the feeling felt by the user of such a watch. A low swivel amplitude of the intermediate bonding block is sufficient to ensure sufficient travel to the bearing surface of the hours hammer, while decreasing the tolerances to be met during the manufacture of the hammer significantly.

Of course, the timepiece movement according to the present invention is not limited to the implementation of a column wheel as a rotary control element, a conventional cam can be used alternately.

In a further variant embodiment, provision may be made for the use of a hammer of the two-part seconds and minutes counters connected by a ball-type connection, as described in the application No 05 111 267.0 on behalf of the Claimant filed on the same day as this application. Advantageously, this ball-type connection allows a first dynamic adjustment of the two bearing surfaces of the hammer 4, while the pivoting of the intermediate linking block 57 with respect to the bead 80 makes it possible to combine the first adjustment with an additional dynamic adjustment. of the hammer 40 stroke of the hour meter.

In addition, the hour meter hammer may also include a bent contact tab, alternatively, without impairing the accuracy of the present invention. Similarly, number or order of elements controlled simultaneously by the movements of the intermediate link block are not limiting.

A similar block could be used to control, for example, a wake-up mechanism including an alarm clock status indicator, a countdown timer, or any other device for which external action is required and which involves actuation. at least two pieces arranged in different planes. It is also possible that the actuation of the two parts is not simultaneous, as needed, without departing from the scope of the present invention.

Claims (10)

Watch movement comprising at least first and second movable control elements (4, 40) relative to a frame (1) of the movement and intended to cooperate with the same external control member (60) in response to an activation of the latter ,
characterized in that it comprises an intermediate connecting block (57) pivotally mounted about an axis X extending substantially along the thickness of the movement, on a frame element (1) of the movement and having a region of receiving (100), remote from said axis X, intended to undergo a force in response to an activation of said control member, and
in that said intermediate block (57) comprises at least two contact areas (62, 63) each of which is arranged to exert a force on one of said respective control elements, said contact areas (62, 63) being respectively located on either side of said receiving zone (100) in the direction of said axis X. Clock movement according to claim 1, characterized in that it comprises a shaft (64) pivotally mounted relative to said frame member (1), about said axis X, and on which at least one of said movable control elements ( 4) is rotatably mounted. Clock movement according to claim 1 or 2, characterized in that said intermediate link block (57) is arranged to come into contact with said movable control elements (4, 40) simultaneously in response to an activation of said member (60) outside control. Clock movement according to claim 3, characterized in that said intermediate connecting block (57) is engaged pivotally about a pin (52) hollow, X axis, driven into one of said fixed elements of the frame (1) and within which said shaft (64) pivots. Clock movement according to claim 4, characterized in that said intermediate connecting block (57) comprises a main portion (58) extending in a general direction substantially perpendicular to the direction of said axis X and comprising, close to a first end, a hole (59) through which it is engaged around said tenon (52), and, near its second end (61), first and second fingers (62, 63) extending from another of said main portion (58), in respective directions substantially parallel to the direction of said axis X, and each carrying one of said contact areas. Clock movement according to claim 5, when the movement has means for implementing a chronograph function, in particular a first counter of a first unit of time and a second counter of a second unit of time, and a first and a second reset hammers (4, 40), respectively, of said first and second counters, characterized in that a first of said movable control elements is integral with said first hammer while the other movable control element is integral with said first hammer (4, 40). said second hammer. Movement according to claim 6, characterized in that it further comprises a reset lever (2) pivotally mounted on said pin (52) and rotatably connected to said intermediate link block (57), said reset lever (2). zero bearing a finger (8) for cooperating with a spring (68) serrated integral with said frame. Clock movement according to claim 7, characterized in that it also comprises a latching lever of said reset lever (2) capable of moving between a first and a second extreme position, respectively corresponding to operating states and to stopping said chronograph function, said latching lever being arranged opposite said reset lever in said first extreme position at least to limit the pivoting thereof. Clock movement according to any one of claims 6 to 8, characterized in that said pin (52) has a bearing surface (56) against which said intermediate connecting block (57) is disposed in abutment, and a bead (80). annular outer diameter slightly smaller than the diameter of said hole (59) and arranged facing a median region of said main block (58) to define a ball-type connection between said pin (52) and said intermediate block (57). Clock movement according to any one of claims 2 to 9, characterized in that it further comprises a control lever (17) intended to be pivoted in response to an activation of a control member (60). additional, said control lever being integral with said shaft (64) of axis X.

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