EP3627232B1 - Self-winding watch movement with time display hands located on the rotor side - Google Patents

Description

TECHNICAL AREA

The invention relates to the field of watchmaking. It relates, more precisely, to an automatic winding horological movement, intended to equip a wristwatch.

PRIOR ART

The first documented self-winding watch mechanisms date from the end of the 18th century. These mechanisms have undergone many improvements. A typical mechanism, widely used today, comprises an oscillating mass in the form of a rotor whose rotation is transmitted to the barrel via a reduction gear.

Conventionally, a rotor comprises a hub, by which it is fixed (with the possibility of rotation) on the plate of the movement, a rim (or “support”) integral with the hub, as well as a heavy (or “heavy”) annular sector. integral with the rim and which, by the imbalance which it induces in the distribution of the masses of the rotor, drives the latter in rotation during the movements of the watch.

In many watches, the hands are located on the side of a front face of the plate and the rotor is on the contrary located on the side of a rear face of the plate, that is to say on the side opposite the hands.

However, there are embodiments in which the rotor is located on the same side as the needles, cf. eg. Swiss patent CH 703 964 . These achievements, which are interesting for the distraction provided to the wearer the spectacle of the rotation of the rotor, however, are not without drawbacks.

The watch movement proposed in the patent CH 703 964 provides for the passage of the hour and minute barrels in a central opening made in the hub of the rotor, which is placed between the body of the watch movement (including the plate, the bridges and the mobile mounted pivoting between the plate and the bridges) and the hour and minute hands.

The result is that the hour and minute hands are located at a fairly large distance from the body of the movement, and in particular from any graduation for reading the hours.

This arrangement is problematic because, on the one hand, it interferes with accurate reading of the time. On the other hand, its aesthetics are questionable because of the large space separating the hands and the body of the movement (taking into account that this space is at least partly filled by the rotor).

The document EP 2 551 731 A1 discloses an oscillating mass arranged above the switch; the mass is mounted using an annular frame.

An objective of the invention is therefore, in a self-winding watch movement with a rotor located on the time display side, to solve the mentioned problems.

SUMMARY OF THE INVENTION

• Une platine ;
• Un barillet monté en rotation par rapport à la platine et pourvu d'une roue dentée primaire ;
• Une chaussée montée en rotation par rapport à la platine autour d'un axe central et en relation d'engrenage avec la roue dentée primaire du barillet par l'intermédiaire d'un rouage de minuterie, cette chaussée comprenant un canon des minutes qui porte une aiguille des minutes ;
• Un mobile des heures monté en rotation par rapport à la platine autour de l'axe central et en relation d'engrenage avec la chaussée, ce mobile des heures comprenant un canon des heures qui porte une aiguille des heures ;
• Une masse oscillante sous forme d'un rotor monté en rotation par rapport à la platine autour de l'axe central, du même côté de la platine que la chaussée et le mobile des heures, ce rotor comprenant :
  • ∘ Un moyeu central en relation d'engrenage avec le barillet ;
  • ∘ Une jante solidaire du moyeu central ;
  • ∘ Un secteur annulaire lourd qui est solidaire de la jante ;
  • ∘ Un arbre rehausseur solidaire du moyeu central et par lequel ce dernier est monté en rotation par rapport à la platine, le canon des minutes et le canon des heures étant montés de manière coaxiale autour de l'arbre rehausseur, l'aiguille des minutes et l'aiguille des heures étant situées entre la platine et la jante du rotor.

To achieve the aforementioned objective, a self-winding watch movement is proposed, which comprises:

• A turntable;
• A barrel mounted in rotation with respect to the plate and provided with a primary toothed wheel;
• A carriageway mounted in rotation with respect to the plate around a central axis and in gear relation with the primary toothed wheel of the barrel by means of a timer gear, this roadway comprising a minute barrel which carries a minute hand;
• An hours mobile mounted in rotation with respect to the plate around the central axis and in gear relation with the roadway, this hour mobile comprising an hour gun which carries an hour hand;
• An oscillating mass in the form of a rotor mounted in rotation with respect to the plate around the central axis, on the same side of the plate as the roadway and the hour moving body, this rotor comprising:
  • ∘ A central hub in gear relation with the barrel;
  • ∘ A rim integral with the central hub;
  • ∘ A heavy annular sector which is integral with the rim;
  • ∘ An enhancer shaft integral with the central hub and by which the latter is mounted in rotation with respect to the plate, the minutes barrel and the hour barrel being mounted coaxially around the booster shaft, the minute hand and the hour hand being located between the plate and the rim of the rotor.

According to a preferred embodiment, the movement comprises a bearing provided with a ring fixed relative to the plate, a ring movable in rotation relative to the ring fixed around the central axis, and interposed rolling elements. between the rings, the booster shaft being integral with the movable ring.

The movable ring preferably carries a toothed ring gear in gear relationship with the barrel via a reduction gear.

According to one embodiment, the fixed ring is an inner ring (preferably secured to the bridge by a central screw) of the bearing and the movable ring is an outer ring.

The watch movement advantageously comprises a sleeve fixed relative to the plate and on which are mounted the hours barrel and the minute cannon. The hours barrel is nested on the case and the minute barrel is nested on the hour barrel.

The roadway and the hours mobile are advantageously mounted on an upper bridge fixed to the plate, this upper bridge having an internal face on the side of the plate, and an opposite external face. The barrel is preferably mounted on the side of the internal face of the upper deck, while the carriageway, the mobile of the hours and the rotor are mounted on the side of the external face of the upper deck.

• Un rouage de minuterie, en prise d'engrenage avec un pignon des minutes solidaire du canon des minutes, ce rouage de minuterie étant monté en rotation par rapport au pont supérieur du côté de la face externe de celui-ci ;
• Un mobile inverseur, qui comprend :
  • ∘ Une roue supérieure située du côté de la face externe du pont supérieur et en prise d'engrenage avec le rouage de minuterie,
  • ∘ Une roue inférieure située du côté de la face interne du pont supérieur, solidaire en rotation de la roue supérieure et en relation d'engrenage avec la roue dentée primaire du barillet ;
  • ∘ Un axe reliant, au travers du pont supérieur, la roue supérieure et la roue inférieure.

The watch movement preferably comprises:

• A timer gear, meshed with a minute pinion integral with the minute barrel, this timer gear being mounted in rotation with respect to the upper bridge on the side of the outer face thereof;
• An inverter mobile, which includes:
  • ∘ An upper wheel located on the outer face side of the upper deck and in gear with the timer gear,
  • ∘ A lower wheel located on the side of the internal face of the upper bridge, integral in rotation with the upper wheel and in gear relation with the primary toothed wheel of the barrel;
  • ∘ An axis connecting, through the upper bridge, the upper wheel and the lower wheel.

BRIEF DESCRIPTION OF THE FIGURES

• La FIG.1 est une vue en perspective d'un mécanisme horloger à remontage automatique, équipé d'un rotor situé du côté de l'affichage ;
• La FIG.2 est une vue en perspective éclatée du mécanisme de la FIG.1 ;
• La FIG.3 est une vue similaire à la FIG.2, montrant le mécanisme à plus grande échelle ;
• La FIG.4 est une vue en plan du mécanisme de la FIG.1 ;
• La FIG.5 est une vue en coupe du mécanisme de la FIG.4, selon le plan de couple A-A ;
• La FIG.6 est une vue en coupe du mécanisme de la FIG.4, selon le plan de coupe B-B ;
• La FIG.7 est une vue en coupe partielle du mécanisme de la FIG.4, selon le plan de coupe C-C.

Other objects and advantages of the invention will become apparent in the light of the description of an embodiment, given below with reference to the appended drawings in which:

• The FIG. 1 is a perspective view of a self-winding watch mechanism, equipped with a rotor located on the display side;
• The FIG. 2 is an exploded perspective view of the mechanism of the FIG. 1 ;
• The FIG. 3 is a view similar to the FIG. 2 , showing the mechanism on a larger scale;
• The FIG. 4 is a plan view of the mechanism of the FIG. 1 ;
• The FIG. 5 is a sectional view of the mechanism of the FIG. 4 , according to the AA torque plan;
• The FIG. 6 is a sectional view of the mechanism of the FIG. 4 , according to the section plane BB;
• The FIG. 7 is a partial sectional view of the mechanism of the FIG. 4 , according to the CC section plane.

DETAILED DESCRIPTION OF THE INVENTION

On the FIG. 1 a self-winding horological movement 1 is shown. This movement 1 is intended to equip a wristwatch, able to be worn on the wrist.

The movement 1 comprises, first of all, a plate 2, which is in the form of a rigid part (preferably made of metal, for example steel), intended to form a support for various components of the movement, fixed or mobile . The plate 2 has a lower face 3 and an upper face 4, opposite to the lower face 3.

The movement 1 comprises, secondly, a barrel 5 mounted in rotation relative to the plate 3 and provided with a primary toothed wheel 6. The barrel comprises a barrel shaft 7 by which the barrel is rotatably mounted on the plate 2, a barrel drum 8, and a barrel spring (not shown) secured, by an internal end, to the barrel shaft 7 and, by an outer end, of the barrel drum 8.

As illustrated in particular on the FIG. 6 , the barrel is provided with a secondary toothed wheel 9 (also called a "ratchet") and separate from the primary toothed wheel 6.

The movement 1 comprises, thirdly, a winder 10 which comprises a winding stem 11 carrying, at an outer end, a winding crown 12. The winder comprises a winding mechanism 13 by which the winding rod 11 engages, in a winding position, the secondary toothed wheel 9 of the barrel 5 in order to ensure its rotation manually and thus to arm the spring.

The movement 1 comprises, in the fourth place, a carriageway 14 mounted in rotation with respect to the plate 2 about a central axis A. The causeway includes a 15 minute barrel which carries a 16 minute hand.

The carriageway 14 is in a gear relationship with the primary toothed wheel 6 of the barrel by means of a timer gear 17.
More precisely, and according to one embodiment illustrated in particular on the FIG. 7 , the carriageway 14 comprises a minute pinion 18, integral with the minute barrel 15 (or integrally formed therewith), and the timer gear 17 comprises a timer wheel 19.1 meshing with the minute pinion.

The timer gear 17 is mounted in rotation with respect to the plate 2.

The movement 1 comprises, in the fifth place, a mobile 20 of the hours, mounted in rotation with respect to the plate 2 around the central axis A. The hours mobile comprises a 21 hour cannon which carries a 22 hour hand.

The hours mobile 20 is in a gear relationship with the roadway 14. More precisely, and according to an embodiment illustrated in FIG. FIG. 7 , the hours mobile comprises an hours pinion 23, integral with the hours barrel 21 (or integrally formed therewith), and the movement 1 comprises a pinion 24 which rotates the hours mobile to the roadway 14 in a gear ratio R of 1/12.

• Une roue 24.1 des heures, qui engrène un pignon 19.2 de minuterie solidaire en rotation de la roue 19.1 de minuterie ;
• Un pignon 24.2 réducteur, solidaire en rotation de la roue 24.1 des heures ;
• Une roue 24.3 inverseuse, interposée entre le pignon 24.2 réducteur et le pignon 23 des heures.

More precisely, the pinion gear 24 comprises:

• An hour wheel 24.1, which meshes with a timer pinion 19.2 integral in rotation with the timer wheel 19.1;
• A reducer pinion 24.2, integral in rotation with the 24.1 hour wheel;
• A 24.3 reversing wheel, interposed between the 24.2 reducer pinion and the 23 hour pinion.

• N_M la vitesse de rotation du pignon 18 des minutes (et donc de l'aiguille 16 des minutes) ;
• N_H la vitesse de rotation du pignon 23 des heures (et donc de l'aiguille 22 des heures) ;
• Z_M le nombre de dents du pignon 18 des minutes ;
• Z_H le nombre de dents du pignon 23 des heures ;
• Z1 le nombre de dents de la roue 19.1 de minuterie ;
• Z2 le nombre de dents du pignon 19.2 de minuterie ;
• Z3 le nombre de dents de la roue 24.1 des heures ;
• Z4 le nombre de dents du pignon 24.2 réducteur.

We notice :

• N _M the speed of rotation of the minute pinion 18 (and therefore of the minute hand 16);
• N _H the speed of rotation of the pinion 23 hours (and therefore of the 22 hour hand);
• Z _M the number of teeth of the pinion 18 of the minutes;
• Z _H the number of teeth of the pinion 23 of the hours;
• Z1 the number of teeth of the timer wheel 19.1;
• Z2 the number of teeth of the timer pinion 19.2;
• Z3 the number of teeth of the wheel 24.1 hours;
• Z4 the number of teeth of the reducer pinion 24.2.

The gear ratio R is written: $$\mathit{R}=\frac{{\mathrm{NOT}}_H}{{\mathrm{NOT}}_M}=\frac{Z_M\times \mathrm{<figure-callout\; id="2"\; label="Z"\; filenames="imgf0002.png,imgf0003.png"\; state="\{\{state\}\}">Z</figure-callout>}2\times Z4}{\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="imgf0001.png,imgf0002.png"\; state="\{\{state\}\}">Z</figure-callout>}1\times \mathrm{<figure-callout\; id="3"\; label="Z"\; filenames="imgf0005.png,imgf0006.png"\; state="\{\{state\}\}">Z</figure-callout>}3\times Z_H}$$

The gears are chosen so that the gear ratio R is equal to 1/12. The following example provides such an R report:
Z _M = Z _M = 64; Z1 = 60; Z2 = 16; Z3 = 48; Z4 = 15

The carriageway 14, including the 15 minute barrel and the 16 minute hand, is located on the side of the upper face 4 of the plate 2. Likewise, the 20 hour mobile, including the 21 hour barrel and the 22 hour hand, is located on the side of the upper face 4 of plate 2.

The movement 1 comprises, in the sixth place, an oscillating mass in the form of a rotor 25 mounted in rotation with respect to the plate 2 around the central axis A, on the same side of the plate 2 as the roadway 14 and the mobile. 20 hours - in this case on the side of the upper face 4 of the plate.

• ∘ Un moyeu 26 central, en relation d'engrenage avec le barillet 5 ;
• ∘ Une jante 27 solidaire du moyeu 26 central ;
• ∘ Un secteur 28 annulaire lourd qui est solidaire de la jante 27.

As illustrated in particular on the FIG. 5 , the rotor 25 comprises:

• ∘ A central hub 26, in gear relation with the barrel 5;
• ∘ A rim 27 integral with the central hub 26;
• ∘ A heavy annular sector 28 which is integral with the rim 27.

According to a particular embodiment, illustrated in the drawings, the rim 27 is in the form of a solid disc, but it could be perforated. In the exemplary embodiment, the rim is a solid disc made of a transparent material, e.g. in industrial sapphire.

The heavy annular sector 28 appears, for example. in the form of a half-ring made of a material whose density is greater than that of the material of the rim 27. Thus, according to a particular embodiment, the heavy annular sector is made of brass.

The attachment of the heavy annular sector 28 to the rim 27 is e.g. produced by screwing, riveting, crimping or gluing.

The movement 1 comprises, in the seventh place, a booster shaft 29 integral with the central hub 26 and by which the latter is mounted in rotation with respect to the plate 2.

The booster shaft 29 is preferably in the form of a hollow cylinder, produced for example. in steel.

The booster shaft and the central hub could form a single piece. However, in the example illustrated, the booster shaft and the central hub form two separate parts fixed to one another. According to a particular embodiment, the central hub is driven onto an upper end of the booster shaft.

As we can clearly see on the FIG. 5 , the 15 minute barrel and the 21 hour barrel are mounted coaxially around the booster shaft 29, the minute hand 16 and the hour hand 22 being located between the plate 2 and the rim 27 of the rotor .

Thus, while allowing the wearer to enjoy the spectacle provided by the rotation of the rotor 25, this arrangement makes it possible to position the hands 16, 22 as close as possible to a possible dial or a crown bearing a time scale, for the benefit of readability of the hours.

• D'une bague 31 fixe par rapport à la platine 2,
• D'une bague 32 mobile en rotation par rapport à la bague 31 fixe autour de l'axe A central et dont est solidaire l'arbre 29 rehausseur, et
• D'éléments 33 roulants interposés entre les bagues 31, 32 (typiquement des billes).

According to a preferred embodiment, the movement 1 comprises a bearing 30 provided:

• A ring 31 fixed relative to the plate 2,
• A ring 32 movable in rotation with respect to the ring 31 fixed around the central axis A and with which the booster shaft 29 is integral, and
• Rolling elements 33 interposed between the rings 31, 32 (typically balls).

The bearing 30 is advantageously mounted on an intermediate bridge 34 fixed on the plate 2.

In the example illustrated, the fixed ring 31 is an inner ring of the bearing 30, and the movable ring 32 is an outer ring.

• Renforcer l'arbre rehausseur en cas de chocs latéraux pouvant s'exercer sur le mouvement horloger,
• Absorber les éventuelles déformations dues au serrage de la vis 35 centrale sur la bague 31 intérieure, et ainsi garantir une bonne coaxialité de celle-ci avec l'axe A de rotation central.

As is clearly visible on the FIG.5, FIG.6 and FIG. 7 , the inner ring 31 is secured to the intermediate bridge 34 by a central screw 35. In the example illustrated, an intermediate part 36 is interposed between the central screw 35 and the inner ring 31 of the bearing 30. This intermediate part is fixed relative to the plate 2 and provides a dual function:

• Reinforce the booster shaft in the event of side impacts that may be exerted on the watch movement,
• Absorb any deformations due to the tightening of the central screw 35 on the inner ring 31, and thus guarantee good coaxiality of the latter with the central axis A of rotation.

In the example illustrated, the booster shaft 29 is driven out on the movable ring 32 located outside the bearing.

The movable ring 32 preferably carries a toothed crown 37 in a gear relationship with the barrel 5, via a reduction gear 38 (visible on the FIG. 5 ). More precisely, the reduction gear is in a gear relationship with the secondary toothed wheel 9 (cog) of the barrel 5.

As we can clearly see on the FIG.5 and FIG.6 , the guns 15, 21 freely surround the booster shaft 29. To this end, the respective internal diameters of the barrels 15, 21 are greater than the external diameter of the booster shaft, at least for the part of this booster shaft located inside the two barrels.

The movement 1 advantageously comprises a sleeve 39 surrounding the enhancer shaft, this sleeve being fixed relative to the plate 2. The hours barrel 20 and the minutes barrel 15 are mounted on the sleeve. In the example illustrated, the sleeve is integral (eg by driving) an upper bridge 40 fixed on the plate 2. More precisely, in the example illustrated, the upper bridge is fixed on the intermediate bridge 34.

The inner ring 31 of the bearing 30 is fixed to the intermediate bridge by the central screw 35, this central screw also securing to this bridge the intermediate part 36, which has a bottom with a central hole for the passage of the central screw and a tube rigid in which the head of this central screw is located, this rigid tube being located inside a central opening presented by the booster shaft, this booster shaft forming a rotating tube.

The upper deck 40 is clearly visible on the FIG. 2 and FIG. 3 . The attachment of the upper deck to the intermediate deck 34 is e.g. carried out by means of screws 41, here three in number. As we can clearly see on the FIG. 3 , the upper bridge is pierced with holes 42 and carries pins 43 for guiding in rotation the moving parts of the movement 2, and in particular components of the timer gear 17.

• Le canon 21 des heures est emboîté sur la douille 39,
• Le canon 15 des minutes est emboîté sur le canon 21 des heures.

According to a preferred embodiment:

• The barrel 21 of the hours is fitted on the sleeve 39,
• The 15 minute barrel is fitted onto the 21 hour barrel.

A first lanterning is advantageously provided at the interface between the sleeve 39 and the hour barrel 21 to allow the latter to rotate (with the hour hand 22) relative to the sleeve.

A second lanterning is advantageously provided at the interface between the hour barrel 21 and the minute barrel 15 to allow the latter to rotate (with the minute hand 16) relative to the hour barrel.

As can be seen in particular on the FIG. 7 , the barrel 5 is mounted on the side of an internal face 44 (turned towards the plate 2) of the upper bridge 40 (and more precisely between the intermediate bridge 34 and the plate 2), while the roadway 14, the mobile 20 of the hours and the rotor 25 are mounted on the side of an outer face 45 (opposite to the plate 2) of the upper bridge.

• Une roue 47 supérieure située du côté de la face 45 externe du pont 40 supérieur et en prise d'engrenage avec le rouage 17 de minuterie (et plus précisément avec le pignon 19.2 de minuterie) ;
• Une roue 48 inférieure située du côté de la face 44 interne du pont 40 supérieur, solidaire en rotation de la roue 47 supérieure et en relation d'engrenage avec la roue 6 dentée primaire du barillet 5 ;
• Un axe 49 reliant, au travers du pont 40 supérieur, la roue 47 supérieure et la roue 48 inférieure.

In order to ensure the transmission of the rotation of the barrel 5 (located on the side of the internal face 44 of the upper bridge 40) to the timing gear 17, the movement 1 is advantageously equipped with a mobile inverter 46, which comprises:

• An upper wheel 47 located on the side of the outer face 45 of the upper bridge 40 and in mesh with the timer gear 17 (and more precisely with the timer pinion 19.2);
• A lower wheel 48 located on the side of the internal face 44 of the upper bridge 40, integral in rotation with the upper wheel 47 and in gear relation with the primary toothed wheel 6 of the barrel 5;
• An axis 49 connecting, through the upper bridge 40, the upper wheel 47 and the lower wheel 48.

According to an embodiment illustrated in FIG. 7 , the axis 49 crosses not only the upper bridge 40 but also the intermediate bridge 34.

As shown on the FIG. 7 , the movement 1 can also be equipped with a small second hand 50, off-center with respect to the central axis A. The small seconds hand is driven out on an axis 51 integral with a seconds wheel 52, in gear relation with the roadway 14 in a 1/60 ratio.

In addition, as can be seen in particular on the FIG. 1 and FIG. 2 , the movement 1 comprises a bearing 53, provided with a guide ring 54 which surrounds the roadway 14, and a foot 55 by which the bearing 53 is fixed to the upper deck 40.

The movement which has just been described provides in particular the advantages mentioned below.

First, the fact that the rotor 25 is located on the same side as the time display (i.e. the hands 15, 22) allows the wearer to enjoy the spectacle offered by the movement of the rotor. , which does not allow a disposition of the latter opposite the display.

Then, and unlike the majority of movements of this type, the fact that the rotor 25 surmounts the needles 15, 22 (which is made possible in particular by the presence of the booster shaft) makes it possible to position them as close as possible to the body of the movement and an hour graduation which may be located on the rear face of this body, for the benefit of the readability of the display.

Finally, it will be noted that the watch movement which has just been described can easily also have an additional time display located on the side of the front face of plate 2. In the latter case, there would thus be a dual display of the time. time, the second display possibly corresponding for example to a different time zone from that of the first display.

Claims (12)

1. Horological movement (1) with automatic winding, which comprises:

   - a plate (2),

   - a barrel (5) mounted such that it rotates relative to the plate (2) and supporting a primary toothed wheel (6),

   - a cannon-pinion (14) mounted such that it rotates relative to the plate about a central axis (A) and meshing with the primary toothed wheel (6) of the barrel (5) by way of a motion-work train (17), this cannon-pinion (14) comprising a minute pipe (15) which supports a minute hand (16),

   - an hour wheel set (20) mounted such that it rotates relative to the plate about said central axis and meshing with the cannon-pinion (14), this hour wheel set (20) comprising an hour pipe (21) which supports an hour hand (22),

   - an oscillating weight in the form of a rotor (25) mounted such that it rotates relative to the plate (2) about the central axis (A), on the same side of the plate as the cannon-pinion (14) and the hour wheel set (20), this rotor comprising:

   ∘ a central hub (26) that meshes with the barrel,

   ∘ a rim (27) rigidly connected to the central hub,

   ∘ a heavy annular sector (28) which is rigidly connected to the rim;

   this horological movement being characterised in that it comprises a lifting arbor (29) rigidly connected to the central hub (26) and via which this hub is mounted such that it rotates relative to the plate (2); and in that the minute pipe and the hour pipe are mounted coaxially about the lifting arbor that passes therethrough, the minute hand and the hour hand being located between the plate (2) and the rim (27) of the rotor.
2. Horological movement (1) according to claim 1, characterised in that it comprises a bearing (30) provided with a ring (31) that is fixed relative to the plate (2), a ring (32) that is capable of moving in rotation relative to the fixed ring (31) about the central axis (A), and rolling elements (33) inserted between the two rings; and in that the lifting arbor (29) is rigidly connected to the mobile ring.
3. Horological movement (1) according to claim 2, characterised in that the ring (32) capable of moving in rotation supports a toothed transmission wheel (37) that meshes with the barrel (5) via a reduction gear train (38).
4. Horological movement (1) according to claim 3, characterised in that the barrel (5) supports a secondary toothed wheel (9) that is separate from the primary toothed wheel (6) and with which the reduction gear train meshes.
5. Horological movement (1) according to any of claims 2 to 4, characterised in that the bearing (30) is mounted on a bar (34) attached to the plate (2).
6. Horological movement (1) according to any of claims 2 to 5, characterised in that the fixed ring (31) is an inner ring and the ring (32) capable of moving in rotation is an outer ring.
7. Horological movement (1) according to claims 5 and 6, implemented together, characterised in that the inner ring (31) of the bearing (30) is attached to the bar (34) by a centre screw (35), this centre screw further engaging, with this bar, an intermediate part (36), which has a bottom with a central hole for the passage of the centre screw and a rigid tube wherein the head of this centre screw is located, this rigid tube being located inside a central opening in the lifting arbor, this lifting arbor forming a rotating tube.
8. Horological movement (1) according to any of the preceding claims, characterised in that it comprises a socket (39) that is fixed relative to the plate (2) and on which the hour pipe (21) and the minute pipe (15) are mounted, this fixed socket surrounding the lifting arbor.
9. Horological movement (1) according to claim 8, characterised in that:

   - the hour pipe (21) is slotted onto the socket (39),

   - the minute pipe (15) is slotted onto the hour pipe (21).
10. Horological movement (1) according to claim 8 or claim 9, characterised in that the socket is mounted, such that it is fixed, on an upper bar (40), which is attached to the plate (2), this upper bar having an internal face (44) on the same side as the plate (2), and an opposite external face (45).
11. Horological movement (1) according to claim 10, characterised in that the barrel (5) is mounted on the same side of the upper bar (40) as the internal face (44), whereas the cannon-pinion (14), the hour wheel set (20) and the rotor (25) are mounted on the same side of this upper bar as the external face.
12. Horological movement (1) according to claim 11, characterised in that it comprises:

    - a motion-work train (17) meshing with a minute-pinion (18) rigidly connected to the minute pipe (15), which motion-work train is mounted such that it rotates relative to the upper bar (40) on the same side thereof as the external face (44),

    - a reverser wheel set (46), which comprises:

    ∘ an upper wheel (47) located on the same side of the upper bar as the external face (45) and meshing with the motion-work train (17),

    ∘ a lower wheel (48) located on the same side of the upper bar as the internal face (44) and rigidly connected to the upper wheel for rotation therewith and meshing with the primary toothed wheel (6) of the barrel (5),

    ∘ a shaft (49) connecting, through the upper bar (40), the upper wheel to the lower wheel.

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