Escapement mechanism for a watch

Abstract

To provide a tangential drive escapement device with two active vibrations whose components are easy to manufacture and / or assemble.SOLUTION: An escapement device comprises: a first escapement mobile element; a second escapement mobile element; an inertial element, arranged to present oscillations including a first vibration and a second vibration; and a blocking mobile element. The blocking mobile element comprises: a first blocking surface portion; a second blocking surface portion; an impulse receiver arranged to receive a first impulse during the first vibration and to receive a second impulse during the second vibration; and an impulse transmitter. The first blocking surface portion is arranged such that a first force exerted by the first escapement mobile element passes the vicinity of a fourth axis of rotation. The second blocking surface portion is arranged such that a second force exerted by the second escapement mobile element passes the vicinity of the fourth axis of rotation.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates generally to escapement mechanisms for timepieces equipped with an inertial element, such as a balance, and in particular to a tangential drive escapement mechanism with two active oscillations. Latest Technology

[0002] In the prior art of escapement devices with two active oscillations, it is known, for example from document WO 2013 / 182243 A1, to provide a tangential drive escapement device with two active oscillations, comprising a single escapement moving element and two blocking moving elements that cooperate with each other and with the escapement moving element.In exchange, for example by means of a Swiss anchor, this system requires small components that are complex to manufacture and assemble, in order to be able to occupy a space comparable to that occupied by a conventional escapement.

[0003] Also known is the document EP 1367462(A1), which relates to a double indirect impulse escapement device in which a blocker is arranged between two escapement wheels. In this document, the blocker has a particularly limited format compared to the respective formats of the escapement wheels, each of which is equipped with a large number of teeth. As a result, the blocker has a very small size, which makes its manufacture complicated, or the escapement wheels have a large size, which negatively affects the compactness of the system. Finally, the orientation of the contact force between a given tooth of one of the two escapement wheels and the first or second blocking means of the blocker is such that a limiting or anti-rotation pin is required, especially in the event of an impact.

[0004] The document Swiss Patent No. 719133 (A1) relates to a resonator for a watch, intended to cooperate with an escapement mechanism comprising two escapement moving elements, the inertial element receiving impulses directly from the escapement moving elements. Summary of the Invention

[0005] One object of the present invention is to overcome the drawbacks of the prior art mentioned above, and in particular to firstly propose a tangential drive escapement device with two active oscillations, whose components are easier to manufacture and / or assemble, and / or whose bulk is reduced, and / or whose operation is robust.

[0006] To this end, a first aspect of the invention provides an escapement device for a timepiece movement, comprising: - a first escapement moving element pivotally mounted about a first axis of rotation and arranged to engage a train of a timepiece movement, such as a motor train, to receive an motive force, the first escapement moving element comprising a plurality of first blocking surfaces and a first drive toothing; - a second escapement moving element pivotally mounted about a second axis of rotation, the second escapement moving element comprising a plurality of second blocking surfaces and second drive toothing that engages with the first drive toothing to transmit the motive force of the first escapement moving element to the second escapement moving element; an inertial element pivotally mounted about a third axis of rotation and arranged to provide oscillations each including a first oscillation and a second oscillation; a blocking movable element pivotally mounted about a fourth axis of rotation, the blocking movable element having: a first blocking surface portion arranged to contact one of the plurality of first blocking surfaces to block rotation of the first escapement moving element; a second blocking surface portion arranged to contact one of the plurality of second blocking surfaces to block rotation of the second escapement moving element; - impulse receiving means arranged to receive a first impulse from the first escapement moving element during a first oscillation of the oscillation of the inertial element, and to receive a second impulse from the second escapement moving element during a second oscillation of said oscillation of the inertial element; - impulse transmission means arranged to transmit at least a part of the first impulse or the second impulse to the inertial element, The present invention relates to an escapement device characterized in that the first blocking surface portion is arranged so that a first force exerted on the blocking movable element by the first escapement movable element blocked by the first blocking surface portion passes substantially near the fourth axis of rotation, in particular passes through the fourth axis of rotation, and the second blocking surface portion is arranged so that a second force exerted on the blocking movable element by the second escapement movable element blocked by the second blocking surface portion passes substantially near the fourth axis of rotation, in particular passes through the fourth axis of rotation.

[0007] According to the above implementation, the escapement device comprises a single blocking moving element and two escapement moving elements. Unlike the escapement device of document WO 2013 / 182243 A1, which comprises two blocking moving elements angularly indexed between them, there is only one blocking moving element, and therefore no indexing is planned for the above implementation. Furthermore, since the blocking moving element is alternatively pivotally mounted to block the first or second escapement moving element, a particularly compact assembly can be obtained, which can be mounted or arranged side by side, in particular symmetrically facing each other in a plane passing through the respective rotation axes of the inertia element and the blocking moving elements. Finally, it can be noted that the escapement device according to the above implementation, in particular compared to the device of document EP 1 367 462 A1, has increased operational safety since the first blocking force or the second blocking force passes through or substantially passes through the fourth axis of rotation, and that in the blocking position (or rest phase) the blocking movable element is not subjected to any overturning torque, making it possible to obtain a stable blocking position and eliminating the need to provide a stop or anti-rotation pin that is usually required to limit the progression of the blocking movable element, especially in the event of a shock.

[0008] It can be noted that the escapement device according to the above implementation transmits two impulses to the inertial element during the same oscillation (one back and forth movement) of the inertial element in order to maintain its oscillation. In fact, the blocking movable element - capable of receiving a first impulse from a first escapement moving element and transmitting it to the inertial element during a first oscillation of the inertial element (e.g., a forward movement constituting the first half of the oscillation); - During the second oscillation of the inertial element (for example the return movement constituting the second half of the oscillation considered), a second impulse can be received from the second escapement moving element and transmitted to the inertial element.

[0009] The invention can be defined by the following characteristics taken individually or in combination:

[0010] According to an embodiment, the first force exerted by the first escapement moving element blocked by the first blocking surface portion on the blocking moving element passes substantially near, and in particular through, the fourth axis of rotation so as to ensure that there is no overturning torque on the blocking moving element during the rest phase. In other words, the first force exerted by the first escapement moving element blocked by the first blocking surface portion on the blocking moving element passes substantially near, and in particular through, the fourth axis of rotation so as to ensure a stable rest position of the blocking moving element during the rest phase, during which the blocking moving element only engages with the first escapement moving element.

[0011] According to an embodiment, the second force exerted by the second escapement moving element blocked by the second blocking surface portion on the blocking moving element passes substantially near, and in particular through, the fourth axis of rotation so as to ensure that there is no overturning torque on the blocking moving element during the rest phase. In other words, the second force exerted by the second escapement moving element blocked by the second blocking surface portion on the blocking moving element passes substantially near, and in particular through, the fourth axis of rotation so as to ensure a stable rest position of the blocking moving element during the rest phase, during which the blocking moving element only engages with the second escapement moving element.

[0012] According to an embodiment, the blocking moving element is mounted in a free pivoting connection. According to an embodiment, the blocking moving element is mounted in a free pivoting connection on a bridge and / or on the main plate of the timepiece. According to an embodiment, the blocking moving element does not include an elastic return device and / or the escapement device does not include an elastic return device coupled or engaged with the blocking moving element to hold it in a rest position or return it to its rest position (the fact remains that the elastic member of the oscillator (a spring in the traditional manner) coupled to the inertia element unlocks the escapement moving element through the continuous movement of the inertia element and then moves the blocking moving element). In other words, the displacement of the blocking moving element is caused by the inertia element and / or the first escapement moving element and / or the second escapement moving element. In particular, during normal operation of the escapement device, the displacement of the blocking moving element is caused exclusively by the inertia element and / or the first escapement moving element and / or the second escapement moving element.

[0013] According to an embodiment, the escapement device is not a direct impulse escapement device, in other words, according to this embodiment, the first escapement moving element and / or the second escapement moving element do not directly cooperate with an inertial element (or an oscillator member, typically formed by a sprung / balance pair).

[0014] According to an embodiment, the inertia element comprises a balance. In particular, the inertia element can comprise a balance, a balance stem and a plate with a pin connected to a spiral spring.

[0015] According to an embodiment, the first blocking surface portion is arranged to block the rotation of the first escapement moving element, i.e. the escapement movement of the first escapement moving element, and / or the second blocking surface portion is arranged to block the rotation of the second escapement moving element, i.e. the escapement movement of the second escapement moving element.

[0016] According to one advantageous embodiment, the escapement device does not include a stop or locking pin that limits the displacement of the blocking mobile element beyond the nominal blocking position.

[0017] According to an embodiment, the first blocking surface portion is arranged such that a first friction cone constructed around the point of application of the force exerted by the first escapement moving element on the blocking moving element comprises, encompasses or passes through the fourth axis of rotation, and / or the second blocking surface portion is arranged such that a second friction cone constructed around the point of application of the force exerted by the second escapement moving element on the blocking moving element comprises, encompasses or passes through the fourth axis of rotation.

[0018] According to an embodiment, the first blocking surface portion has a first normal direction passing through or substantially passing through the fourth axis of rotation, and the second blocking surface portion has a second normal direction passing through or substantially passing through the fourth axis of rotation.

[0019] According to an embodiment, - a first straight line passing through the fourth axis of rotation and through the point of contact between the first escapement moving element and the first blocking surface portion during the first blocking phase; and - during the second blocking phase, a second straight line passing through the fourth axis of rotation and through the point of contact between the second escapement moving element and the second blocking surface portion; They define an acute angle α therebetween. - the fourth axis of rotation as the first vertex, - as a second vertex, a point of contact between the first escapement moving element and the first blocking surface portion; - a triangle can be constructed with the point of contact between the second escapement moving element and the second blocking surface portion as its third vertex. According to the above embodiment, this triangle has an acute angle at its first vertex. Such a configuration makes it possible to ensure a reduced travel of the blocking moving element between a first blocking position (of the blocking moving element), in which the first escapement moving element is blocked (by the blocking moving element), and a second blocking position (of the blocking moving element), in which the second escapement moving element is blocked (by the blocking moving element). This provides a compact assembly, advantageously symmetrical with respect to a plane passing through the respective axes of rotation of the inertia element and the blocking moving element.

[0020] In other words, the present invention provides an escapement device for a timepiece movement, comprising: - a first escapement moving element pivotally mounted about a first axis of rotation and arranged to engage a train of a timepiece movement, such as a motor train, to receive an motive force, the first escapement moving element comprising a plurality of first blocking surfaces and a first drive toothing; a second escapement moving element pivotally mounted about a second axis of rotation and comprising a plurality of second blocking surfaces and second drive toothing engaging the first drive toothing; - an inertial element, such as a balance, pivotally mounted about a third axis of rotation and arranged to provide oscillations each comprising a first oscillation and a second oscillation; a blocking movable element pivotally mounted about a fourth axis of rotation, the blocking movable element having: a first blocking surface portion arranged to contact one of the plurality of first blocking surfaces to block movement of the first escapement moving element; a second blocking surface portion arranged to contact one of the plurality of second blocking surfaces to block movement of the second escapement moving element; - impulse receiving means arranged to receive a first impulse from the first escapement moving element during a first oscillation of the oscillation of the balance, and to receive a second impulse from the second escapement moving element during a second oscillation of said oscillation of the balance; - impulse transmission means arranged to transmit at least a part of the first impulse or the second impulse to the inertial element, - a first straight line passing through the point of contact between the first escapement moving element and the first blocking surface portion and through a point through which the fourth axis of rotation passes; and a second straight line passing through the point of contact between the second escapement moving element and the second blocking surface portion and the point through which the fourth axis of rotation passes; The escapement device may be characterized in that it defines an acute angle α therebetween.

[0021] According to an embodiment, the angle α is comprised within the range of values ​​between 60° and 80°.

[0022] According to an embodiment, the first and second blocking surfaces are arranged to cooperate with the blocking moving element in a first plane, called the blocking plane, and the first drive toothing is arranged to cooperate with the second drive toothing in a second plane, called the drive plane, parallel to and distinct from the blocking plane, in order to transmit the motive force from the first to the second escapement moving element. According to an embodiment, the first and / or second escapement moving element can be formed by two superimposed components, a first level comprising the drive toothing and a second level comprising the blocking surfaces. The cooperation between the two escapement moving elements takes place in a plane distinct from the surfaces with which each of the escapement moving elements and the blocking moving element cooperate.

[0023] According to an embodiment, - the plurality of first blocking surfaces and the first drive toothing form a first main drive toothing; - the plurality of second blocking surfaces and the second drive toothing form a second main drive toothing; a second main drive toothing engages with the first main drive toothing so as to transmit a motive force from the first escapement moving element to the second escapement moving element in a given plane; The first and second main drive toothings are arranged to cooperate with the blocking moving element in the same plane, and therefore, according to this embodiment, the cooperation between the two escapement moving elements takes place in the same plane as the cooperation between each of the escapement moving elements and the blocking moving element, thereby reducing the overall thickness of the escapement arrangement.

[0024] According to an embodiment, - the first escapement moving element comprises a plurality of first blocking teeth, each of the plurality of first blocking teeth comprising a first blocking surface of the plurality of first blocking surfaces, the first blocking teeth being preferably asymmetric; - the second escapement moving element comprises a plurality of second blocking teeth, each of the plurality of second blocking teeth comprising a second blocking surface of the plurality of second blocking surfaces, the second blocking teeth being preferably asymmetric; Each of the first blocking teeth is arranged to cooperate with a second drive toothing and / or each of the second blocking teeth is arranged to cooperate with a first drive toothing to transmit a motive force from the first escapement moving element to the second escapement moving element.

[0025] According to an embodiment, - the first escapement moving element comprises a plurality of first blocking teeth, each of the plurality of first blocking teeth comprising a first blocking surface of the plurality of first blocking surfaces; - the second escapement moving element comprises a plurality of second blocking teeth, each of the plurality of second blocking teeth comprising a second blocking surface of the plurality of second blocking surfaces; The first blocking tooth and the second blocking tooth are asymmetrical.

[0026] According to an embodiment, the first escapement moving element and / or the second escapement moving element each comprise 3 to 8 first blocking teeth and 3 to 8 second blocking teeth, preferably 4 or 5 first blocking teeth and 4 or 5 second blocking teeth.

[0027] According to an embodiment, The impulse receiving means of the blocking movable element is a first impulse input portion arranged to receive a first impulse from the first escapement moving element during a first oscillation of the inertial element; - a second impulse input portion arranged to receive a second impulse from the second escapement moving element during the second oscillation of the inertial element; - the first impulse input portion is adjacent to the first blocking surface portion, and the second impulse input portion is adjacent to the second blocking surface portion; and / or The first impulse input portion is separated from the first blocking surface portion by a first rest beak, and the second impulse input portion is separated from the second blocking surface portion by a second rest beak.

[0028] According to an embodiment, - a third straight line passing through the fourth axis of rotation and through the point of contact between the first escapement moving element and the first impulse input portion during the first impulse phase; and - during the second impulse phase, a fourth straight line passing through the fourth axis of rotation and through the point of contact between the second escapement moving element and the second impulse input portion; They define an acute angle γ therebetween.

[0029] According to an embodiment, the angle γ is comprised within the range of values ​​between 50° and 70°.

[0030] According to an embodiment, the angle γ is smaller than the angle α.

[0031] According to an embodiment, - the first blocking surface portion is concave; and / or The second blocking surface portion is concave.

[0032] According to an embodiment, the first blocking surface portion comprises at least two first secondary blocking surfaces forming a "V" or "U" shape, preferably the V forming an obtuse angle βa, preferably the angle βa being within the range of values ​​between 140° and 170°; the second blocking surface portion comprises at least two second secondary blocking surfaces forming a "V" or "U" shape, preferably the V forming an obtuse angle βb, preferably the angle βb being within a value range of 140° to 170°.

[0033] According to an embodiment, - the first escapement moving element forms or comprises a first escapement wheel, and / or the second escapement moving element forms or comprises a second escapement wheel;

[0034] A second aspect of the present invention is an escapement device for a timepiece movement, comprising: - a first escapement moving element pivotally mounted about a first axis of rotation and arranged to engage a train of a timepiece movement, such as a motor train, to receive an motive force, the first escapement moving element comprising a plurality of first blocking surfaces and a first drive toothing; a second escapement moving element pivotally mounted about a second axis of rotation and comprising a plurality of second blocking surfaces and second drive teeth; an inertial element pivotally mounted about a third axis of rotation and arranged to provide oscillations each including a first oscillation and a second oscillation; a blocking movable element pivotally mounted about a fourth axis of rotation, the blocking movable element having: a first blocking surface portion arranged to contact one of the plurality of first blocking surfaces to block rotation of the first escapement moving element; a second blocking surface portion arranged to contact one of the plurality of second blocking surfaces to block rotation of the second escapement moving element; - impulse receiving means arranged to receive a first impulse from the first escapement moving element during a first oscillation of the oscillation of the inertial element, and to receive a second impulse from the second escapement moving element during a second oscillation of said oscillation of the inertial element; - impulse transmission means arranged to transmit at least a part of the first impulse or the second impulse to the inertial element, - the plurality of first blocking surfaces and the first drive toothing form a first main drive toothing; - the plurality of second blocking surfaces and the second drive toothing form a second main drive toothing; the second main drive toothing engages with the first main drive toothing so as to transmit a motive force from the first escapement moving element to the second escapement moving element in a given plane; The invention may relate to an escapement device characterized in that the first and second main drive toothings are arranged to cooperate with the blocking movable element in the same plane.

[0035] According to the above implementation, the escapement device comprises a single blocking moving element and two escapement moving elements. Unlike the escapement device of document WO 2013 / 182243 A1, which comprises two blocking moving elements angularly indexed between them, there is only one blocking moving element, and therefore no indexing is planned for the above implementation. Furthermore, since the blocking moving element is alternatively pivotally mounted to block the first or second escapement moving element, a particularly compact assembly can be obtained, which can be mounted or arranged side by side, in particular symmetrically facing each other in a plane passing through the respective rotation axes of the inertia element and the blocking moving elements.

[0036] It can be noted that the escapement device according to the above implementation transmits two impulses to the inertial element during the same oscillation (one back and forth movement) of the inertial element to maintain its oscillation. In fact, the blocking movable element - during a first oscillation of the inertial element (e.g., a forward movement constituting the first half of the oscillation), it is capable of receiving a first impulse from a first escapement moving element and transmitting it (at least in part) to the inertial element; and - During the second oscillation of the inertial element (for example the return movement constituting the second half of the oscillation considered), it is able to receive a second impulse from the second escapement moving element and transmit it (at least partially) to the inertial element.

[0037] According to this embodiment, the cooperation between the two escapement moving elements takes place in the same plane as the cooperation between each of the escapement moving elements and the blocking moving element, thereby reducing the overall thickness of the escapement arrangement and making it possible to design a flat, smooth part that is easier to manufacture.

[0038] According to an embodiment, the first blocking surface portion is arranged so that a first force exerted on the blocking moving element by the first escapement moving element blocked by the first blocking surface portion passes substantially near the fourth axis of rotation, in particular passes through the fourth axis of rotation, and the second blocking surface portion is arranged so that a second force exerted on the blocking moving element by the second escapement moving element blocked by the second blocking surface portion passes substantially near the fourth axis of rotation, in particular passes through the fourth axis of rotation.

[0039] It can be noted that the escapement device according to the above implementation increases the safety of operation since the first blocking force or the second blocking force passes through the fourth axis of rotation, makes it possible to obtain a stable blocking position since, in the blocking position (or rest phase), the blocking mobile element is not subjected to any overturning torque, and advantageously does not have to provide a stop or a locking pin that is usually required to limit the progress of the blocking mobile element, especially in the event of a shock. Naturally, such an escapement device is also suitable for the installation of a stop or a locking pin.

[0040] According to an embodiment, - a first straight line passing through the fourth axis of rotation and through the point of contact between the first escapement moving element and the first blocking surface portion during the first blocking phase; and - during the second blocking phase, a second straight line passing through the fourth axis of rotation and through the point of contact between the second escapement moving element and the second blocking surface portion; They define an acute angle α therebetween. - the fourth axis of rotation as the first vertex, - as a second vertex, a point of contact between the first escapement moving element and the first blocking surface portion; - a triangle can be constructed with the point of contact between the second escapement moving element and the second blocking surface portion as its third vertex. According to the above embodiment, this triangle has an acute angle at its first vertex. Such a configuration makes it possible to ensure a reduced travel of the blocking moving element between a first blocking position (of the blocking moving element), in which the first escapement moving element is blocked (by the blocking moving element), and a second blocking position (of the blocking moving element), in which the second escapement moving element is blocked (by the blocking moving element). This provides a compact assembly, advantageously symmetrical with respect to a plane passing through the respective axes of rotation of the inertia element and the blocking moving element.

[0041] According to an embodiment, the angle α is comprised within the range of values ​​between 60° and 80°.

[0042] According to an embodiment, The impulse receiving means of the blocking movable element is a first impulse input portion arranged to receive a first impulse from a first escapement moving element during a first oscillation of the balance; a second impulse input portion arranged to receive a second impulse from a second escapement moving element during a second oscillation of the balance; - the first impulse input portion is adjacent to the first blocking surface portion, and the second impulse input portion is adjacent to the second blocking surface portion; and / or The first impulse input portion is separated from the first blocking surface portion by a first rest beak, and the second impulse input portion is separated from the second blocking surface portion by a second rest beak.

[0043] According to an embodiment, - a third straight line passing through the fourth axis of rotation and through the point of contact between the first escapement moving element and the first impulse input portion during the first impulse phase; and - during the second impulse phase, a fourth straight line passing through the fourth axis of rotation and through the point of contact between the second escapement moving element and the second impulse input portion; They define an acute angle γ therebetween.

[0044] According to an embodiment, the angle γ is comprised within the range of values ​​between 50° and 70°.

[0045] According to an embodiment, the angle γ is smaller than the angle α.

[0046] According to an embodiment, - the first escapement moving element comprises a plurality of first blocking teeth, each of the plurality of first blocking teeth comprising a first blocking surface of the plurality of first blocking surfaces, each first blocking tooth being disposed between two first drive teeth of the first drive toothing; The second escapement moving element comprises a plurality of second blocking teeth, each of the plurality of second blocking teeth comprising a second blocking surface of the plurality of second blocking surfaces, each second blocking tooth being arranged between two second drive teeth of the second drive toothing.

[0047] According to an embodiment, each of the first blocking teeth preferably having a circular involute profile and comprising at least a first transverse drive surface provided for meshing with a second drive tooth; Each of the second blocking teeth preferably has a circular involute profile and comprises at least a second transverse drive surface provided to mesh with a first drive tooth.

[0048] According to an embodiment, the first blocking tooth and the second blocking tooth are asymmetric.

[0049] According to an embodiment, the first blocking tooth and the second blocking tooth each have a first drive tooth head diameter (DT1) and a larger second drive tooth head diameter (DT2).

[0050] According to an embodiment, 1.1*DT1≦DT2≦1.3*DT1.

[0051] According to an embodiment, the first blocking tooth and the second blocking tooth each have a first drive tooth thickness (e1) and a second drive tooth thickness (e2) that is greater than the first drive tooth thickness.

[0052] According to an embodiment, 1.8*e1≦e2≦2.5*e1.

[0053] According to an embodiment, the first escapement moving element and / or the second escapement moving element each comprise 3 to 8 first blocking teeth and 3 to 8 second blocking teeth, preferably 4 or 5 first blocking teeth and 4 or 5 second blocking teeth.

[0054] According to an embodiment, - the first escapement moving element forms or comprises a first escapement wheel, and / or the second escapement moving element forms or comprises a second escapement wheel;

[0055] A third aspect of the present invention relates to a timepiece comprising an escapement device according to the first or second aspect. [Brief explanation of the drawings]

[0056] Other characteristics and advantages of the invention will appear more clearly on reading the following detailed description of embodiments of the invention given as non-limiting examples and illustrated by the accompanying drawings, in which:

[0057] [Figure 1] 1 shows a general view of a timepiece oscillator having an escapement device according to a first embodiment of the invention, in particular comprising a first escapement moving element, a second escapement moving element and a blocking moving element.

[0058] [Figure 2] 2 shows a diagram of the escapement device of FIG. 1 cooperating with the balance plate of the oscillator during the rest phase;

[0059] [Figure 3]3 shows an enlarged view of the escapement mechanism of FIG. 2 without the balance plate.

[0060] [Figure 4] 4 represents a view of the blocking movable element of the escapement device of FIGS. 1 to 3;

[0061] [Figure 5] 5 shows a detail of the blocking movable element of FIG. 4.

[0062] [Figure 6] 4 represents a view of a second escapement moving element of the escapement device of FIGS. 1 to 3. FIG.

[0063] [Figure 7] 3 shows a diagram of the escapement device of FIG. 2 during the transition from the rest phase to the impulse phase.

[0064] [Figure 8] 8 shows a diagram of the escapement device of FIG. 7 during the impulse phase.

[0065] [Figure 9] 1 to 3, in some respects, comprising a first escapement moving element, a second escapement moving element and a blocking moving element, which cooperate with a balance plate.

[0066] [Figure 10] 10 represents a diagram of the first escapement moving element of the escapement device of FIG. 9.

[0067] [Figure 11] 10 represents a diagram of the escapement mechanism of FIG. 9 without the balance plate. DETAILED DESCRIPTION OF THE INVENTION

[0068] 1 to 8 illustrate a tangential drive escapement device 10 according to a first embodiment, with two active oscillations, i.e., during the impulse phase of the escapement device, either the first or second escapement moving element comes into contact with the blocking moving element, causing the blocking moving element to rotate in the opposite direction.

[0069] 1 shows a schematic representation of a movement 100 comprising an escapement 10 arranged between the movement train, here a motor 99, and an oscillating device 5 in the form of a balance 51 coupled to a spiral spring. - a blocking movable element 4, - a first escapement moving element 1; a second escapement moving element 2.

[0070] As will be explained below with reference to Figure 2, the escapement device 10 cooperates with the resonator 5 via a pin embedded in the plate 511 of the balance 51. With regard to the motor train 99, Figure 1 shows that the first escapement moving element 1 engages with the motor wheel 3 of the motor train 99, and in particular with the wheel 31 of the motor train 99, via a pinion 13 fixed to the first escapement moving element 1.

[0071] As is well known, the function of the escapement device 10 of the invention is to maintain the oscillation of a regulating member, namely the balance 51) of the oscillator 5.

[0072] In particular, as shown in detail in Figure 2, the first escapement moving element 1 is mounted pivotally about a first axis of rotation A1, engages with the motor train 99 of the timepiece movement to receive the motive force, and comprises a plurality of first blocking faces 121a (shown in Figures 2 and 3) arranged on a first blocking tooth 121, and a first drive toothing 111. It can be noted that the first blocking tooth 121 and the first drive toothing 111 are arranged parallel and in different planes.

[0073] The second escapement moving element 2 is mounted pivotally about a second axis of rotation A2 and comprises a plurality of second blocking surfaces 221a arranged on the second blocking toothing 221 as well as a second drive toothing 211 engaging with the first drive toothing 111. It can be noted that the second blocking toothing 221 and the second drive toothing 211 are arranged parallel and in different planes.

[0074] The blocking mobile element 4 is pivotally mounted about a fourth axis of rotation A4 and comprises impulse receiving means for its parts, which impulse receiving means respectively comprise: - in the form of a first impulse input portion 41a arranged to receive a first impulse from the first escapement moving element 1 during a first oscillation of the balance 51, in the form of a second impulse input portion 41b arranged to receive a second impulse from the second escapement moving element 2 during the second oscillation of the balance 51.

[0075] The blocking mobile element 4 also comprises impulse transmitting means having first and second impulse transmitting means in the form of a first impulse surface 42a and a second impulse surface 42b, respectively, which surfaces form a fork such as those known in the range of blockers or anchors of escapement devices, said fork being shaped to cooperate with a pin 511a of a plate 511 of the balance 51.

[0076] Finally, the blocking mobile element 4 a first blocking surface portion 43a arranged to contact one of the plurality of first blocking surfaces 121a and to block rotation of the first escapement moving element 1; a second blocking surface portion 43b arranged to contact one of the plurality of second blocking surfaces 221a and to block rotation of the second escapement moving element 2;

[0077] As will be explained below, the first and second escapement moving elements 1 and 2, in particular comprising the first and second escapement wheels 12 and 22 respectively, are provided to cooperate with the stop wheel 4, thereby providing an impulse to the sprung balance and thus making it possible to maintain its oscillation about the third axis of rotation A3. Furthermore, the first and second escapement moving elements 1 and 2 are in mesh with each other via the first and second wheels 11 and 21, in particular by means of first and second drive toothings formed by teeth 111 and 211 respectively.

[0078] Advantageously, the motor mobile element 3 of Figure 1 can be directly engaged with a second mobile element (not shown) of the motor train 99. Indeed, such a structure makes it possible to generate a rotational speed of the first escapement mobile element 1 and the second escapement mobile element 2, which makes it possible to limit the number of teeth of the first escapement wheel 12 and the second escapement wheel 22, and therefore to implement first escapement mobile element 1 and second escapement mobile element 2 whose respective dimensions are substantially comparable to those of the blocking mobile element 4, providing a compact escapement device with two active oscillations whose dimensions are substantially similar to those of a Swiss anchor escapement.

[0079] In particular, the first escapement moving element 1 and the second escapement moving element 2 can be inscribed in cylinders of diameters D1 and D2, respectively, centered on axes A1 and A2, which are comparable in diameter to the cylinder centered on the fourth axis of rotation A4 in which the blocking moving element 4 can be inscribed (FIG. 3). In the particular configuration illustrated in FIG. 3, diameter D4 is greater than diameters D1 or D2. Furthermore, axes A1, A2, and A4 define respective ends of a substantially equilateral triangle.

[0080] In one structural variant depicted in Figures 1-8, D4 is equal to approximately 1.4 x D1 or 1.4 x D2 (D1 and D2 are the same). More generally, D4 is preferably made up of D1 - 2 x D1 or D2 - 2 x D2 (it can be noted that these proportions are much more uniform than the escapement device disclosed in EP 1 367 462, where D4 is approximately 0.3 x D1 or D4 is 0.3 x D2). "An element inscribed in a cylinder having a diameter D about its axis" means that the diameter D is the smallest diameter about its axis such that the element can be contained within the cylinder.

[0081] 4 represents a detailed top view of the blocking mobile element 4 in a plane. This view particularly highlights the angle α separating the first straight line S1 connecting the first blocking surface portion 43a to the fourth axis of rotation A4 and the second straight line S2 connecting the second blocking surface portion 43b to the fourth axis of rotation A4. In particular, the first straight line S1 connects the fourth axis of rotation A4 to the first blocking surface portion 43a at the level of the contact area between the first blocking surface portion 43a and the first blocking tooth 121, in particular the end 121a, in particular at the level of the contact point 431a (see FIG. 5), during the rest phase of the escapement device 10. In particular, the second straight line S2 connects the fourth axis of rotation A4 to the second blocking surface portion 43b during the rest phase of the escapement device (see Figure 3) at the level of the contact area between the second blocking surface portion 43b and the second blocking tooth 221, in particular the end 221a, in particular at the level of the contact point 431b (see Figure 5).

[0082] In the structural variant represented here by way of example, this angle α is approximately equal to 70°. More generally, values ​​in the range 60°≦α≦80° may be provided.

[0083] Preferably, and according to the illustrated exemplary embodiment, the first and second blocking surface portions 43a, 43b are concave, i.e. when viewed from either side of the escapement moving element, they are formed by continuous or discontinuous surfaces forming a V. In particular, points 431a, 431b are therefore defined by the hollow tip of the "V" (Fig. 5).

[0084] These surfaces, with continuous or discontinuous straight or curved portions highlighted in bold in FIG. 4, form angles βa and βb at the level of each of the surfaces 43a and 43b. If the first and second blocking surface portions 43a and 43b are curved, the angles βa and βb can be measured by examining the tangents of the blocking surface portions. Advantageously, the angles βa and βb are obtuse. Preferably, the angles βa and βb are approximately equal to 170°. More generally, the angles βa and βb are preferably comprised between 140° and 175°. Studies carried out by the applicant have shown that this angle range represents a good compromise between good blocking safety, little or no recoil at the end of the impulse, and minimal energy loss during unlocking. The angle βa may or may not be equal to the angle βb.

[0085] Furthermore, the first and second blocking surface portions 43a, 43b are inclined with respect to the normal to the segments S1, S2 (FIG. 5). The first surface portion 43a1 may, for example, form an angle βa1 of approximately 6° with respect to the normal to the line S1. The second surface portion 43a2 may, for example, form an angle βa2 of approximately 8° with respect to the normal to the line S1. The first surface portion 43b1 may, for example, form an angle βb1 of approximately 6° with respect to the normal to the line S2. The second surface portion 43b2 may, for example, form an angle βb2 of approximately 8° with respect to the normal to the line S2. If the first and second blocking surface portions 43a, 43b are curved, the angles βa1, βa2, βb1, and βb2 can be measured by considering the tangents to the blocking surface portions.

[0086] 5, it can be noted that the first and second blocking surface portions 43a, 43b are adjacent to the first and second impulse input portions 41a, 41b, respectively. In fact, the first blocking surface portion 43a abuts the first impulse input portion 41a at the level of a first rest beak 44a separating these two functional and adjacent surfaces. Similarly, the second blocking surface portion 43b abuts the second impulse input portion 41b at the level of a second rest beak 44b separating these two functional and adjacent surfaces.

[0087] During the rest phase of the escapement device, the end 121a of the first blocking tooth 121 and the end 221a of the second blocking tooth 221 are provided to be accommodated within the first blocking surface portion 43a and the second blocking surface portion 43b, respectively, in particular within the "V" formed by the first blocking surface portion 43a and the second blocking surface portion 43b. Advantageously, each of the end portions 121a, 221a has the form of a rounded surface.

[0088] 2 shows a resting stage in which the end 221a of the second blocking tooth 221 abuts against the second blocking surface portion 43b, in particular being supported within the "V" formed by this same second blocking surface portion. In this configuration, this pin 511a can release itself from this same first impulse surface 42a under the effect of rotation of the balance 51 along the first direction of rotation (represented by the arrow in FIG. 2) until this pin 511a comes into contact with this same first impulse surface 42a again under the effect of rotation of the balance 51 along the second direction of rotation (represented by the arrow in FIG. 7), thus allowing unlocking.

[0089] 7 illustrates the unlocking phase, in which the end 221a of the second blocking tooth 221 moves away from the second blocking surface portion 43b under the effect of the pin 511a, which guides the impulse surface 42a until the end 221a passes the second rest beak 44b and comes into contact with the second impulse input portion 41b, so that this end 221a can transmit an impulse to the blocking mobile element 4 via the second impulse input portion 41b, and thus the blocking mobile element 4 can transmit an impulse to the pin 511a via the second impulse surface 42b, as represented in FIG. 8. This impulse phase continues with a rest phase (not shown), in which one end 121a of the first blocking tooth 121 of the first escapement moving element 1 comes into contact with the first blocking surface portion 43a of the blocking moving element 4.

[0090] This second impulse input portion 41b is therefore capable of receiving an impulse generated by the end 221a of the second blocking tooth 221 of the second escapement moving element 2. The blocking moving element 4 also comprises a first impulse input portion 41a capable of receiving an impulse generated by one end 121a of the first blocking tooth 121 of the first escapement moving element 1. As can be seen from the plan view in Figure 5, these first and second impulse input portions 41a, 41b are preferably convex when viewed from either side of the escapement moving element. Each of these first and second impulse input portions 41a, 41b in particular comprises a cylindrical portion, in particular a cylindrical portion whose directrix is ​​a circular involute. These first and second impulse input portions 41 a, 41 b preferably cooperate with rounded surfaces 121 a, 221 a of the first and second blocking teeth 121, 221 having an asymmetric profile. Such a morphology of the blocking teeth makes it possible to optimize the geometry of the surfaces 121 a, 221 a and 41 a, 41 b with regard to the transmission of torque to the oscillator 5. In particular, the asymmetric first and second blocking teeth 121, 221 make it possible to generate a wide choice of possible geometries of the first and second impulse input portions 41 a, 41 b.

[0091] As shown in Figure 4, a third straight line S3 that is tangent to the first impulse input portion 41a and passes through the fourth axis of rotation A4; and a fourth straight line S4, which is tangent to the second impulse input portion 41b and passes through the fourth axis of rotation A4. Preferably, the angle γ is an acute angle. Preferably, the first impulse input portion 41a and the second impulse input portion 41b are in the angular range of the angle α separating the surfaces 43a, 43b. Therefore, γ is strictly smaller than α. In one construction variant, the angle γ is approximately equal to 60°. More generally, a value in the range 50°≦γ≦70° can be provided.

[0092] The blocking mobile element 4 can be symmetrical about a plane P perpendicular to the plane of the drawing and passing through the fourth axis of rotation A4, in particular if the surfaces 41 a, 42 a, 43 a, 41 b, 42 b, 43 b are identical. This makes manufacturing easier and the part can be mounted in one direction or another during assembly. Necessarily, the blocking mobile element 4 cannot be symmetrical about the plane P.

[0093] 9 to 11 illustrate an escapement device 10' according to a second embodiment, the operation of which is identical in all respects to that of the escapement device according to the first embodiment, but differs in structure in some aspects which will be explained below, and the reference numerals are modified simply by adding an apostrophe "'".

[0094] According to this second embodiment, the first escapement moving element 1' and the second escapement moving element 2' each take the form of a planar component, here a single escapement wheel.

[0095] In detail, the first escapement moving element 1' is pivotally mounted about a first axis of rotation A1' and is arranged to engage with a motor train (not shown) of the timepiece movement to receive the motive force, and comprises a plurality of first blocking faces 121a' provided on a first blocking tooth 121', and a first drive toothing 111', which together form a first main drive toothing. As seen above, the first main drive toothing is essentially planar, i.e. the first blocking tooth 121' and the first drive toothing 111' are arranged in the same plane. Finally, it can be noted that the first blocking tooth 121' has an asymmetrical profile, while the teeth of the first drive toothing 111' have a symmetrical profile.

[0096] The second escapement moving element 2' is pivotally mounted about a second axis of rotation A2' and comprises a plurality of second blocking faces 221a' provided on the second blocking tooth 221' and the second drive toothing 211', which together form the second main drive toothing. As seen above, the second main drive toothing is essentially planar, i.e. the second blocking tooth 221' and the second drive toothing 211' are arranged in the same plane. Finally, it can be noted that the second blocking tooth 221' has an asymmetrical profile, while the teeth of the second drive toothing 211' have a symmetrical profile.

[0097] The first main drive toothing (comprising the first drive toothing 111' and the first blocking toothing 121') and the second main drive toothing (comprising the second drive toothing 211' and the second blocking toothing 221') cooperate with each other on the one hand and with the blocking movable element 4' on the other hand in the manner described below.

[0098] On the one hand, the first drive toothing 111' and the second drive toothing 211' are provided so as to be able to mesh together. The first drive toothing 111' is also provided so as to be able to mesh with the second blocking tooth 221', and the second drive toothing 211' is also provided so as to be able to mesh with the first blocking tooth 121'. Thus, the first escapement moving element 1' and the second escapement moving element 2' move synchronously.

[0099] On the other hand, the first blocking tooth 121' and the second blocking tooth 221', like the first blocking tooth 121 of the first escapement moving element 1 and the second blocking tooth 221 of the second escapement moving element 2 of the first embodiment, each have ends which form a first blocking surface 121a' and a second blocking surface 221a', respectively, in the form of a rounded surface provided to cooperate with the first blocking surface portion 43a' and the second blocking surface portion 43b' and the impulse receiving means of the blocking moving element 4'.

[0100] In particular, the following points: the first drive toothing 111′ and the second drive toothing 211′ are intended exclusively to enable the meshing of the first escapement moving element 1′ and the second escapement moving element 2′; It can be noted that the first blocking tooth 121' and the second blocking tooth 221' are provided to cooperate with the blocking mobile element 4', but also to enable the meshing of the first escapement moving element wheel 1' and the second escapement moving element wheel 2'. In particular, the first blocking tooth 121' is provided to cooperate successively with the first impulse input portion 41 a' and with the first blocking surface portion 43 a' of the blocking mobile element 4'. Similarly, the second blocking tooth 221' is provided to cooperate successively with the first impulse input portion 41 b' and with the second blocking surface portion 43 b' of the blocking mobile element 4'.

[0101] In this second embodiment, as shown in Figure 10, the head diameter DT2 of the first blocking tooth 121' and the second blocking tooth 221' is larger than the diameter DT1 of the teeth of the first drive toothing 111' and the second drive toothing 211'. In this way, the teeth of the first drive toothing 111' and the second drive toothing 211' do not interact or interfere with the blocking movable element 4'. In one particular construction variant, the diameter DT2 may be approximately 1.2 x DT1. More generally, a value in the range 1.1 x DT1 < DT2 < 1.3 x DT1 may be provided.

[0102] In this second embodiment, the thickness e2 of the first blocking tooth 121' and the second blocking tooth 221' is advantageously different from the tooth thickness e1 of the first drive toothing 111' and the second drive toothing 211'. Preferably, as also shown in FIG. 10, the thickness e2 of the first blocking tooth 121' and the second blocking tooth 221' is thicker than the tooth thickness e1 of the first drive toothing 111' and the second drive toothing 211'. In one particular construction variant, the thickness e2 may be approximately 1.9 x e1. Preferably, 1.8 x e1 ≤ e2 ≤ 2.5 x e 1 Values ​​in the range of

[0103] "Thickness" means the distance measured between two lateral sides of a given tooth, measured at the level of the diameter DP corresponding to or substantially coinciding with the pitch diameter of the toothing under consideration.

[0104] In this way, the angular indexing of the first escapement moving element 1' and the second escapement moving element 2' is easily performed without risk of error. In particular, during assembly, a given first blocking tooth 121' can only be accommodated between two consecutive teeth of the second drive toothing 211', and vice versa. The distribution of the teeth of the first and second main drive toothings around their respective axes means that only one angular indexing configuration is possible between the first escapement moving element 1' and the second escapement moving element 2'.

[0105] In this particular construction variant, each of the first and second escapement moving elements 1′ and 2′ is - 10 teeth of the first drive toothing 111' and 10 teeth of the second drive toothing 211'; and five first blocking teeth 121' and five second blocking teeth 221'. In particular, two consecutive teeth of the first drive tooth portion 111' and two consecutive teeth of the second drive tooth portion 211' are respectively disposed between two consecutive teeth of the first blocking tooth portion 121' and the second blocking tooth portion 221'.

[0106] Advantageously, the first escapement moving element 1′ and the second escapement moving element 2′ are identical, so that the first escapement moving element 1′ and the second escapement moving element 2′, respectively, can be mounted in an inverted manner during assembly of the escapement device 10′.

[0107] The escapement device according to the second embodiment is therefore particularly advantageous with regard to its compactness (the escapement moving element is reduced to just the escapement wheel) and its simplicity of assembly (the escapement moving elements are not individually produced by assembly and do not have to be assembled with a keying system).

[0108] With regard to the dimensions in the plane of the elements of the escapement device 10' according to the second embodiment, these are comparable to those of the device of the first embodiment (see FIGS. 3 and 11). In particular, the diameter D4 is equal to approximately 1.3 x D1 or 1.3 x D2 (D1 and D2 being identical). More generally, D4 is preferably made up of D1 - 2 x D1 or D2 - 2 x D2.

[0109] industrial use

[0110] The escapement device and its products according to the present invention are applicable to industrial applications.

[0111] It will be understood that various modifications and / or improvements, obvious to those skilled in the art, can be made to the different embodiments of the invention described herein without departing from the framework of the invention.

[0112] It can be noted in particular that in any embodiment, the blocking mobile element can be a one-piece component or can be obtained by assembly, and in particular, the blocking means can be added on the blocking mobile element, for example in the form of a pallet, which can be made of a particular material.

[0113] Preferably, the escapement moving element according to the first embodiment is capable of forming an assembly between a one-piece meshing wheel and a one-piece escapement wheel.

[0114] Preferably, each of the escapement moving elements according to the second embodiment may be in the form of a single-piece wheel.

[0115] Whatever the embodiment, the blocking moving element and / or the escapement moving element, in particular the escapement wheel, can be made entirely or partially of monocrystalline silicon, polycrystalline silicon, amorphous silicon, non-crystalline silicon dioxide, whatever its orientation, or doped silicon, whatever the type and level of doping. They can also be made of silicon carbide, glass, ceramic, quartz, ruby, or even sapphire. Alternatively, they can be made of metal or metal alloy, in particular at least partially of an amorphous metal alloy. For example, such components can contain Ni or NiP. Advantageously, alloys such as those described in WO 2017 / 102661 can be used. It is also possible to provide that all or part of these components are made of an amorphous metal alloy (for example, that all or part of these components can be made of a metallic glass).

[0116] Preferably, the escapement is provided to cooperate with a sprung balance having a frequency of 3 or 4 Hz, or a higher frequency such as 5, 6, 8 or 10 Hz.

[0117] Naturally, it is conceivable to use an escapement device to maintain the oscillation of any type of oscillator, whether it is a sprung-balance type oscillator as described above, or any other type of oscillator, for example an inertial element guided by a flexible blade and returning elastically.

Claims

1. An escapement device (10, 10') for a timepiece movement, comprising: a first escapement moving element (1, 1') pivotally mounted about a first axis of rotation (A1, A1') and arranged to engage a train of said timepiece movement, such as the motor train (99), in order to receive a motive force, and comprising a plurality of first blocking faces (121a, 121a') and first drive teeth (111, 111'); a second escapement moving element (2, 2') pivotally mounted about a second axis of rotation (A2, A2'), the second escapement moving element (2, 2') comprising a plurality of second blocking faces (221a, 221a') and second drive toothing (211, 211') engaging with the first drive toothing so as to transmit the motive force of the first escapement moving element (1, 1') to the second escapement moving element (2, 2'); an inertial element pivotally mounted about a third axis of rotation (A3, A3') and arranged to provide oscillations each comprising a first oscillation and a second oscillation; a blocking mobile element (4, 4') pivotally mounted about a fourth axis of rotation (A4, A4'), said blocking mobile element (4, 4') comprising: a first blocking surface portion (43a, 43a') arranged to be in contact with one of said first blocking surfaces (121a, 121a') in order to block the rotation of said first escapement moving element (1, 1'); a second blocking surface portion (43b, 43b') arranged to be in contact with one of said plurality of second blocking surfaces (221a, 221a') in order to block the rotation of said second escapement moving element (2, 2'); impulse receiving means arranged to receive a first impulse from said first escapement moving element (1, 1') during a first oscillation of the oscillation of said inertial element, and to receive a second impulse from said second escapement moving element (2, 2') during a second oscillation of said oscillation of said inertial element; impulse transmission means arranged to transmit at least a part of the first impulse or the second impulse to the inertial element, The first blocking surface portions (43a, 43a') are arranged so that a first force exerted on the blocking moving element (4, 4') by the first escapement moving element (1, 1') blocked by the first blocking surface portions (43a, 43a') passes near the fourth rotation axis (A4, A4'), so that the blocking moving element (4, 4') blocked by the first blocking surface portions (43a, 43a') is not subjected to any overturning torque, and the second blocking surface portions ( and a second blocking surface portion (43a, 43a') is arranged so that a second force exerted on the blocking moving element (4, 4') by the second escapement moving element (2, 2') blocked by the second blocking surface portion (43b, 43b') passes near the fourth axis of rotation (A4, A4'), thereby preventing the blocking moving element (4, 4') blocked by the second blocking surface portion (43a, 43a') from receiving any overturning torque.

2. a first straight line (S1) passing through said fourth axis of rotation (A4, A4') and through the point of contact between said first escapement moving element (1, 1') and said first blocking surface portion (43a, 43a') during a first blocking phase; and a second straight line (S2) passing through said fourth axis of rotation (A4, A4') and through the point of contact between said second escapement moving element (2, 2') and said second blocking surface portion (43b, 43b') during the second blocking phase; 2. An escapement device (10, 10') according to claim 1, which defines an acute angle α therebetween.

3. An escapement device (10, 10') according to claim 2, in which the acute angle α is comprised within a range of values ​​between 60° and 80°.

4. 4. An escapement device (10) according to any one of claims 1 to 3, wherein the plurality of first blocking surfaces (121 a, 121 a') and the plurality of second blocking surfaces (221 a, 221 a') are arranged to cooperate with the blocking movable element (4, 4') in a first plane, called the blocking plane, and the first drive toothing (111, 111') is arranged to cooperate with the second drive toothing in a second plane, called the drive plane, parallel to and distinct from the blocking plane, for transmitting the motive force from the first escapement movable element (1, 1') to the second escapement movable element (2, 2').

5. - said plurality of first blocking surfaces (121a, 121a') and said first drive toothing (111, 111') form a first main drive toothing; - said plurality of second blocking surfaces (221a, 221a') and said second drive toothing form a second main drive toothing; the second main drive toothing engages with the first main drive toothing so as to transmit the motive force from the first escapement moving element (1, 1') to the second escapement moving element (2, 2') in a given plane, 2. An escapement device (10') according to claim 1, wherein the first and second main drive toothings are arranged to cooperate with the blocking mobile element (4, 4') in the same plane.

6. - said first escapement moving element (1, 1') comprises a plurality of first blocking teeth (121, 121'), said plurality of first blocking teeth (121, 121') each comprising a first blocking surface of said plurality of first blocking surfaces (121a, 121a'); - said second escapement moving element (2, 2') comprises a plurality of second blocking teeth (221, 221'), said plurality of second blocking teeth (221, 221') each comprising a second blocking surface of said plurality of second blocking surfaces (221a, 221a'); 6. An escapement device (10') according to claim 5, wherein each of the first blocking teeth (121, 121') is arranged to cooperate with the second drive toothing (211, 211') and / or each of the second blocking teeth (221, 221') is arranged to cooperate with the first drive toothing (111, 111') to transmit the motive force from the first escapement moving element (1, 1') to the second escapement moving element (2, 2').

7. - said first escapement moving element (1, 1') comprises a plurality of first blocking teeth (121, 121'), said plurality of first blocking teeth (121, 121') each comprising a first blocking surface of said plurality of first blocking surfaces (121a, 121a'); - said second escapement moving element (2, 2') comprises a plurality of second blocking teeth (221, 221'), said plurality of second blocking teeth (221, 221') each comprising a second blocking surface of said plurality of second blocking surfaces (221a, 221a'); 2. An escapement device (10, 10') according to claim 1, wherein the first blocking tooth (121, 121') and the second blocking tooth (221, 221') are asymmetrical.

8. 7. An escapement device (10, 10') according to claim 6, wherein the first escapement moving element (1, 1') and / or the second escapement moving element (2, 2') respectively comprise between three and eight first blocking teeth (121, 121') and between three and eight second blocking teeth (221, 221').

9. The impulse receiving means of the blocking movable element (4, 4') a first impulse input portion (41a, 41a') arranged to receive said first impulse from said first escapement moving element (1, 1') during said first oscillation of said inertial element; a second impulse input portion (41b, 41b') arranged to receive said second impulses from said second escapement moving element (2, 2') during said second oscillation of said inertial element, the first impulse input portion (41 a, 41 a') is adjacent to the first blocking surface portion (43 a, 43 a') and the second impulse input portion (41 b, 41 b') is adjacent to the second blocking surface portion (43 b, 43 b'); and / or An escapement device (10, 10') according to claim 1, wherein the first impulse input portion (41a, 41a') is separated from the first blocking surface portion (43a, 43a') by a first rest beak (44a), and the second impulse input portion (41b, 41b') is separated from the second blocking surface portion (43b, 43b') by a second rest beak (44b).

10. a third straight line (S3) passing through said fourth axis of rotation (A4, A4') and through the point of contact between said first escapement moving element (1, 1') and said first impulse input portion (41a, 41a') during the first impulse phase; and a fourth straight line (S4) passing through said fourth axis of rotation (A4, A4') and through the point of contact between said second escapement moving element (2, 2') and said second impulse input portion (41b, 41b') during the second impulse phase; 10. An escapement device (10, 10') according to claim 9, which defines an acute angle γ therebetween.

11. An escapement device (10, 10') according to claim 10, in which the acute angle γ is comprised within a range of values ​​between 50° and 70°.

12. 11. An escapement device (10, 10') according to claim 10 when dependent on claim 2 or 3, in which the angle γ is smaller than the angle α.

13. - said first blocking surface portion (43a, 43a') is concave, and / or - said second blocking surface portion (43b, 43b') is concave; An escapement device (10, 10') according to claim 1.

14. said first escapement moving element (1, 1') forms or comprises a first escapement wheel (12, 12'), and / or An escapement device (10, 10') according to claim 1, wherein said second escapement moving element (2, 2') forms or comprises a second escapement wheel (22, 22').

15. A timepiece equipped with an escapement device (10, 10') according to claim 1.

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