CH712077A2 - Tourbillon, movement and timepiece. - Google Patents

Abstract

The invention relates to a tourbillon, a movement and a timepiece to obtain a better magnetic resistance while avoiding an increase in size. There is provided a carriage (41) which is rotatable about an axis (O1) of trolley shafts (46 and 47) and wherein a regulator-exhaust assembly (45) is mounted; a first magnetic element (63) extending in a first direction in a plan view obtained by looking from the axial direction and which is a functional component of the timepiece; and a second magnetic element (100) extending in a second direction intersecting the first direction, wherein, in a plan view obtained by looking from the axial direction, an angle (θa) between, on the one hand, a first straight line (La) connecting an outermost end surface, in the first direction, of the first magnetic element (63) and the axis (O1) and secondly a second straight line ( Lb) connecting an outermost end surface, in the second direction, of the second magnetic member (100) and the axis (O1) is selected to be greater than 60 degrees and smaller than 120 °.

Description

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a tourbillon, a movement and a timepiece. 2. Description of the Related Art [0002] It is known that, in a mechanical timepiece, a walking error (positional difference) is generated as a result of a change of direction of the gravitational force acting on the pendulum -Spiral due to a change in the position of the timepiece. A structure to compensate for such positional differences is known and is called the vortex. In a vortex, the regulator-exhaust assembly, which is the main mechanism determining the running, is mounted in a carriage and this carriage is rotated on its axis in a fixed cycle. As a result, it is possible to make the walking error generated by a change of position of the timepiece uniform, which makes it possible to compensate for a positional difference.

In the case of the aforementioned timepiece in which a vortex is mounted, placing this timepiece in a magnetic field acting in a plane direction orthogonal to the axis of the carriage results in the generation, on a magnetic element present in the carriage, a pair tending to accelerate or slow down the carriage about its axis. This results in the risk that the vortex will become unable to function normally.

For example, the patent document 1 (JP-A-50-67169) describes a construction in which a movement housed in a timepiece box is covered with a magnetic material so that the influence of the magnetic field acting on the timepiece.

It should be considered that in this construction, a magnetic flux passes through the magnetic material, whereby it is possible to screen the magnetism between the movement and the magnetic material, which allows to remove the influence of the magnetic field acting on the movement.

However, in the art of the prior art described above, the movement itself is covered with magnetic material, which results in an increase in the size of the timepiece. The vortex has a complicated constitution and is arranged to rotate within the movement, so that it is rather difficult to cover only the vortex with magnetic material.

In addition, in the art of the prior art, when the intensity of the magnetic field exceeds the saturation magnetic flux density of the magnetic material, the magnetic flux leaked by the magnetic material passes through the magnetic element, inside the movement. Also, it is quite difficult to obtain satisfactory magnetic resistance.

SUMMARY OF THE INVENTION

The present invention has been made in view of the above problems of the prior art. An object of the present invention is to provide a vortex, a movement and a timepiece helping to suppress an increase in size and to achieve a higher magnetic resistance.

In order to achieve the above object, according to one aspect of the present invention, there is provided a vortex comprising: a carriage which is rotatable about an axis of a carriage shaft and wherein a regulator assembly -exhaust is mounted; a first magnetic element extending in a first direction in a plan view obtained by looking from the axial direction of the carriage shaft and which is a functional component of a timepiece; and a second magnetic element which extends in a second direction intersecting the first direction in the plan view, in which vortex, in the plan view, an angle between, on the one hand, a first straight line connecting the axis and an end surface of the first magnetic element, i.e., its end surface being the outermost in the first direction, and, secondly, a second straight line connecting the axis and a surface of the first magnetic element. the end of the second magnetic element, that is, its outermost end surface in the second direction, is greater than 60 degrees and smaller than 120 degrees.

According to this aspect, when the vortex is placed in a magnetic field in a direction in a plane orthogonal to the axial direction, the phase between the couples exerted in the first magnetic element and in the second magnetic element, around the axis, is widely separated in the presence of the influence of the magnetic field, so that the couples are easily generated in different directions. Therefore, it is easy for the torque generated in the first magnetic element and that generated in the second magnetic element to act to cancel each other out. As a result, the resultant of the torque generated in the first magnetic element and that generated in the second magnetic element (the torque generated in the carriage) can be decreased, compared to the torque of each magnetic element.

In addition, in this construction, the second magnetic element, for example, is added to the carriage, that is all, so that it is possible to avoid an increase in size, compared to a conventional construction in which the vortex is itself covered with magnetic material.

In addition, thanks to the construction in which the couples each generated in one of the two magnetic elements are mutually canceled with the influence of the magnetic field, it is possible to obtain a higher magnetic resistance regardless of the intensity of the magnetic field, which is a difference compared to the usual construction in which we simply pass the magnetic field.

In the above aspect, the second magnetic element may be a functional component of the timepiece.

According to this aspect, the first magnetic element and the second magnetic element are both functional elements of the timepiece, so that it is possible to attenuate the influence of the magnetic field by means of the arrangement of the first magnetic element and the second magnetic element, which are existing elements. As a result, it is possible to obtain a reduction in the number of components, etc. compared to the case where a magnetism cancellation element is separately provided as the second magnetic element.

In the above aspect, the second magnetic element may be a magnetism cancellation element mounted on the carriage independently of the functional components of the timepiece.

According to this aspect, the second magnetic element can be mounted on the carriage without being in interaction with other functional components. As a result, the arrangement and shape of the second magnetic element can be relatively freely selected depending on the arrangement, shape, etc. of the first magnetic element. As a result, it is possible to achieve progress in terms of greater freedom of choice for form and design and further progress in terms of magnetic resistance, compared with the case where the first magnetic element and the second magnetic element both are functional components.

According to one aspect of the present invention, there is provided a movement equipped with the vortex defined above.

According to one aspect of the present invention, there is provided a timepiece provided with the movement defined above.

With this constitution, it is possible to propose a movement and a timepiece improved in reliability.

According to one aspect of the present invention, it is possible to obtain an improved magnetic resistance while avoiding a larger size.

PRESENTATION OF THE DRAWINGS

[0021]

Fig. 1 is an external view of a timepiece according to one embodiment.

Fig. 2 is a plan view of a carriage according to a first embodiment.

Fig. 3 is a graphical representation of the torque ratio as a function of an angle θb between a magnetic field H and a first straight line La (for 9a = 50 degrees).

Fig. 4 is a graphical representation of the torque rate as a function of an angle θb between a magnetic field H and a first straight line La (for 9a = 60 degrees).

Fig. 5 is a graphical representation of the torque ratio as a function of an angle θb between a magnetic field H and a first straight line La (for 9a = 80 degrees).

Fig. 6 is a graphical representation of the torque rate as a function of an angle θb between a magnetic field H and a first straight line La (for 9a = 90 degrees).

Fig. 7 is a graphical representation of the torque rate as a function of an angle 9b between a magnetic field H and a first straight line La (for 9a = 110 degrees).

Fig. 8 is a graphical representation of the torque rate as a function of an angle θb between a magnetic field H and a first straight line La (for 9a = 120 degrees).

Fig. 9 is a graphical representation of the torque ratio as a function of an angle 9b between a magnetic field H and a first straight line La (for 9a = 135 degrees).

Fig. 10 is a graphical representation of the resulting torque rate versus angle 9a.

Fig. 11 is a plan view of a carriage according to a variant of the first embodiment.

Fig. 12 is a plan view of the carriage according to a variant of the first embodiment.

Fig. 13 is a plan view of a carriage according to a second embodiment.

Fig. 14 is a plan view of a carriage according to a variant of the second embodiment.

Fig. 15 is a plan view of the carriage according to a third embodiment.

DESCRIPTION OF EMBODIMENTS

[0022] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

First Embodiment [0023] Timepiece [0024] FIG. 1 is an external view of a timepiece. In order to make the drawings easier to examine, the components are partly omitted from the drawings and are represented in a simplified manner.

As shown in FIG. 1, in the timepiece 1 of the present embodiment, a movement 10, a dial (not shown) carrying a graduation, etc. giving information relating to the time, different needles (not shown), etc. are arranged inside a timepiece box 3.

Movement [0026] The movement 10 essentially comprises a plate 11, a front gear train 12 and a vortex 13. A winding stem 15 is mounted in a winding stem guide hole (not shown) of the plate 11. The winding stem 15 is rotatable on its axis and is movable in the axial direction. A ring 16 located on the side of the timepiece box 3 is mounted on an end portion (the protruding portion relative to the movement 10) of the winding stem 15. In the description which follows, the side of the Movement 10 on the dial side relative to platen 11 is referred to as the "back side" of movement 10, while the opposite side of movement to the dial side is referred to as the "front side" of movement 10. Each of the wheels described below is mounted in such a way that its axial direction is the antero-posterior direction of movement 10.

The front gear train 12 comprises a movement barrel 21, a center mobile 22, a moving average 23 and a mobile second 24.

The movement barrel 21 contains a barrel spring (not visible) serving as a source of energy to the timepiece. The barrel spring of the movement barrel 21 is armed by means of, for example, a rotation of the winding stem 15. The movement barrel 21 is driven by the rotational force during the winding of the barrel spring. A barrel drum constituting the movement barrel 21 meshes with a center pinion of the center wheel 22.

The center mobile 22 performs a rotation per hour due to the rotation of the movement cylinder 21. A center wheel of the center mobile 22 meshes with a mean pinion of the average mobile 23. A floor 31 is mounted on the center of the center mobile 22. A minute hand (not shown) is mounted on the floor 31.

In addition, an hour wheel 32 is adjusted on the floor 31. The hour wheel 32 is connected to the floor 31 via a timer wheel 33. Due to the rotation of the floor 31 the hour wheel 32 rotates in 12 hours. An hour hand (not shown) is mounted on the hour wheel 32.

The average mobile 23 rotates by means of the rotation of the center mobile 22. A medium wheel constituting the average mobile 23 meshes with the second gear of the mobile second 24.

The second mobile 24 rotates by means of the rotation of the mobile of average 23.

Tourbillon [0033] Tourbillon 13 comprises a carriage 41, a fixed wheel 42 and a fifth mobile 43 connected to the carriage 41 and the second mobile 24.

FIG. 2 is a plan view of the carriage 41.

As shown in FIG. 2, the carriage 41 includes a carriage main plate 44, a carriage front portion and a carriage rear portion (not visible), as well as a regulator-exhaust assembly 45 mounted on the carriage main plate 44.

The main carriage plate 44 is configured with an annular shape whose center is an axis 01 extending in the anteroposterior direction of the movement 10.

The front carriage portion is disposed on the front side (the bottom side of the drawing plane) with respect to the main carriage plate 44. The front portion of the carriage includes a carriage front shaft (carriage shaft) 46 extending coaxially with the axis 01. The carriage front shaft 46 is rotatably supported by a carriage front axle (not visible). A carriage gear 48 (see Fig. 1) of the carriage front shaft 46 meshes with the fifth wheel 43.

The rear portion of the carriage is disposed on the rear side (the front side of the plane of the drawing) relative to the main carriage plate 44. The rear carriage portion has a carriage rear shaft (carriage shaft). extending coaxially with the axis 01. The carriage rear shaft 47 is rotatably supported by a carriage rear axle (not shown). In other words, when the fifth mobile 43 rotates, the carriage shafts 46 and 47 of the carriage 41 of the present embodiment allow the carriage 41 to rotate about the axis 01. In the following description, the direction according to the axis 01 may be called the axial direction, while the direction in which the peripheral rotation is around the axis 01 may be called the peripheral direction and that the direction orthogonal to the axis 01 may be called the direction radial.

As shown in FIG. 1, the fixed wheel 42 is fixed to the above-mentioned carriage front axle.

The fifth mobile 43 is rotatably supported by the carriage front bridge and the fixed wheel 42. The fifth mobile 43 meshes with the second wheel of the second mobile 24. In this way, the fifth mobile 43 rotates at means of rotation of the second mobile 24.

As shown in FIG. 2, the exhaust-regulator assembly 45 comprises a spiral balance 51, an escapement wheel 52 and an anchor 53.

The spring balance 51 is rotatably supported by the main carriage plate 44 and by a balance bridge 55 disposed rearwardly relative to the main carriage plate 44.

The pendulum bridge 55 is formed, for example, as a plate extending in a radial direction. The two end portions of the rocker bridge 55 are connected to the main carriage plate 44 by connection rods 56. The aforementioned carriage rear portion is connected to the rocker bridge 55.

The spring balance 51 comprises a balance shaft 61, a balance beam 62, a bolt carrier 63, a spiral 64 and a racket 65.

The balance shaft 61 is arranged to be coaxial with the axis 01. The balance shaft rotates back and forth (rotations back and forth) according to a constant oscillation cycle, around the axis 01, by the power transmitted by the hairspring 64. The front end of the rocker shaft 61 is rotatably retained by the main carriage plate 44, via a bearing ( not shown). Furthermore, the rear end of the rocker shaft 61 is rotatably retained by the rocker bridge 55, via a bearing 67.

The balancing serge 62 is fixed to the balance shaft 61, by driving or the like.

Forming what is called the "first magnetic element" in the appended claims, the bolt carrier 63 is a magnetic element made of a magnetic material. The bolt carrier 63 has a piton base 71 and a bolt arm 72.

The pin base 71 is formed in an annular shape placed coaxially with the axis 01 in a plan view obtained by looking from the axial direction. The stud base 71 is fitted to the above-mentioned bearing 67.

The pin arm 72 extends radially outwardly from the base of the pin 71. A pin 73 is carried by the outer end portion, in a radial direction, the pin arm 72. The radially outermost end surface of the peak arm 72 is on the radially inner side of the outer peripheral surface of the main carriage plate 44.

The spiral 64 is a spiral spring in a plan view obtained by looking from the axial direction. The inner end portion of the hairspring 64 is connected to the balance shaft 61. In contrast, the outer end portion of the hairspring 64 is connected to the aforementioned pin 73.

The racket 65 is made of a non-magnetic material. The racket 65 has a racket base 75 and a racket arm 76.

The racket base 75 is mounted on the bearing 67 so as to be rotatable about the axis 01. More specifically, when a predetermined rotational torque is applied to it, the racket base 75 slides relative to the bearing 67 and turns around the axis 01.

The racket arm 76 extends radially outwardly from the racket base 75. A racket pin 77 and a racket key 78 are mounted on the end portion the outermost, in a radial direction, of the racket arm 76.

The racket pin 77 and the racket key 78 are opposed to each other in a radial direction, with the spiral 64 passing between them, a radial space being provided relative to the portion of the portion of outer end of the hairspring 64 located closer to the inner end portion than the piton 73 mentioned above. More specifically, the racquet pin 77 is disposed on the outer side, in a radial direction, relative to the spiral 64, while the racket key 78 is disposed on the inner side in the radial direction. The inner end portion of the hairspring 64 may oscillate radially between the racket pin 77 and the racket key 78, and may contact the racket pin 77 and the racket key 78.

The escapement wheel 52 is rotatably supported by the main carriage plate 44 and by an anchor / escapement wheel bridge 81 disposed on the rear side of the main carriage plate 44. Anchor / escapement wheel 81 is disposed between the main carriage plate 44 and the swing bridge 55 in the axial direction.

The escapement wheel 52 comprises a shaft portion 82, an escape pinion 83 (see Fig. 1) formed on the shaft portion 82, and an escape wheel 84 fitted to the portion forming shaft 82.

The forward end of the shaft portion 82 is rotatably retained by the main carriage plate 44, via a bearing (not shown). In contrast, the rear end of the shaft portion 82 is rotatably retained by the anchor / escape wheel bridge 81 via a bearing 85.

Several teeth are provided at the outer periphery of the escape wheel 84.

The escape pinion 83 meshes with the fixed wheel 42 mentioned above. In this way, the escapement wheel 52 turns on itself while making revolutions around the fixed wheel 42, by the rotation of the carriage 41.

The anchor 53 makes a connection between the spring balance 51 and the escape pinion 52. The anchor 53 is supported so as to be capable of a rotary movement back and forth between the plate trolley 44 and the anchor / escape wheel bridge 81. More specifically, the anchor 53 comprises an anchor shaft 91, an anchor body 92 attached to the anchor shaft 91, and pallets 93 and 94 attached to the anchor body 92.

The anchor shaft 91 extends along an axis 02 radially offset relative to the axis 01. The front end of the anchor shaft 91 is rotatably retained by the main carriage plate 44, via a bearing (not shown). The rear end of the anchor shaft 91 is rotatably retained by the anchor / escape wheel bridge 81 via a bearing 95.

The anchor body 92 is made of a non-magnetic material. The anchor body 92 is shaped as a plate extending in a longitudinal direction, which is a radial direction. The anchor shaft 91 is attached to the central portion, in a radial direction, of the anchor body 92, by driving or the like. An entry pallet 93 is mounted to the portion of the anchor body 92 which is located on the inside, in a radial direction, relative to the anchor shaft 91. An output pallet 94 is mounted to the portion the anchor body 92 which is located on the outer side, in a radial direction, with respect to the anchor shaft 91. By means of a rotation of the anchor 53, the pallets 93 and 94 are engaged with the escape wheel 84 of the escape wheel 52 and separated from this escape wheel 84.

At the inner end, in a radial direction, the anchor body 92, there is provided an anchor box 97 configured to be engaged with a double plate (not shown) of the sprung balance 51 and to be put away from this double plateau.

At the outer end, in a radial direction, the anchor body 92, there is provided an anchor finger 98. The anchor finger 98 can abut against a pair of pins limiting 99 provided on the trolley main plate 44 mentioned above. The limiting pins 99 stand at the rear side, from the portions of the main carriage plate 44 which are located on both sides of the anchor finger 98 (both sides in the peripheral direction), in a plan view. When the anchor 53 pivots, the anchor finger 98 abuts against the limiting pins 99. As a result, the rotational stroke (operating angle) of the anchor 53 is limited.

Forming what is called the "second magnetic element" in the appended claims, a magnetism canceling element 100 made of a magnetic material is provided at the portion of the main carriage plate 44 which is located between the escape mobile 52 and the peak arm 72, in the peripheral direction. The magnetism canceling element 100 is shaped as a plate extending in a longitudinal direction, which is a radial direction. The radially outwardmost end surface of the magnetism canceling element 100 is on the outer side, in a radial direction, of the carriage main plate 44. In contrast, the radially inwardly directed end surface surface of the magnetism canceling element 100 is on the inside, in a radial direction, of the hairspring 64. magnetism cancellation 100 may have a prismatic shape or a columnar shape as long as it has a shape extending in a longitudinal direction, which is a radial direction.

Here, it is considered that, in a plan view, the straight line connecting the axis 01 and the outermost end surface, in a radial direction (called "first direction" in the claims). appended), of the aforementioned bolt carrier 63 (piton arm 72) is a first straight line La, and that the straight line connecting the axis 01 and the outermost end surface, in a direction radial (referred to as "second direction" in the appended claims), the magnetism canceling element 100 is a second straight line Lb. Then, it is preferable that the bolt carrier 63 and the magnetism canceling element 100 are arranged such that the angle 8a between the first straight line La and the second straight line Lb is greater than 60 degrees and lower. at 120 degrees. In the present embodiment, the angle θ is selected equal to about 90 degrees.

The present inventor has studied the torque acting on the magnetic elements, namely the bolt carrier 63 and the magnetism cancellation element 100, when the timepiece 1 is placed in a magnetic field exercising in a direction in a plane orthogonal to the axial direction (for example the magnetic field H in Fig. 2). More specifically, the inventor has studied the relationship between the angle between the magnetic field H and each of the straight lines La, Lb and the torque acting on the bolt carrier 63 and the magnetism canceling element 100 due to the presence of the magnetic field H.

Figs. 3 to 9 are graphical representations of the torque ratio as a function of the angle Ob between the magnetic field H and the first straight line La. The "torque ratio" is the ratio of the torque acting on the bolt carrier 63 and the magnetism canceling element 100 as a function of the angle 6b when the maximum torque acting on the stud carrier 63 is 1. The magnetism canceling element 100 is dimensioned so that the maximum torque is equivalent to maximum torque acting on the bolt carrier 63. The dashed line curve in the drawings shows the resulting torque rate (the torque generated in the carriage 41) of the torque ratio of the bolt carrier 63 and the torque ratio of the magnetism cancellation element 100.

The conditions with regard to the angle 6a in FIGS. 3 to 9 are the following:

Figure 3: 6a = 50 °

Figure 4: 9a = 60 °

Figure 5: Oa = 80 °

Figure 6: 6a = 90 °

Figure 7: Oa = 110 °

Figure 8: Oa = 120 °

Figure 9: Oa = 135 ° [0070] As shown in FIG. 3, the torque ratio of each of the pole-pin 63 and the magnetism-canceling element 100 varies in a sinusoidal curve over a 180-degree cycle. In other words, the maximum torque is generated in the bolt carrier 63 when the angle Ob is 45 degrees, 135 degrees, 225 degrees and 315 degrees. On the other hand, the maximum torque is generated in the magnetism canceling element 100 for a position shifted in phase by 50 degrees with respect to the bolt carrier 63. In this case, in the ranges where the torques generated in the bolt carrier 63 and in the magnetism canceling element 100 act in the same direction around the shaft 01, these pairs add up to one another. On the other hand, in the ranges where the torques generated in the stud holder 63 and in the magnetism canceling element 100 act in different directions about the axis 01, these couples act in the direction of cancel each other. As a result, under the conditions of FIG. 3, the maximum value of the resulting torque rate is higher than the maximum values of the respective torque ratios of the bolt carrier 63 and the magnetism canceling element 100. The behaviors described above are the same in the conditions of FIG. 9.

In the conditions of FIG. 4, the respective torque ratios of the bolt carrier 63 and the magnetism canceling element 100 are maximized in a 60 degree phase shifted position. In this case, the maximum value of the resulting torque rate and the maximum values of the respective torque ratios of the bolt carrier 63 and the magnetism canceling element 100 are equivalent to each other. The behavior described above is the same under the conditions of FIG. 8.

On the other hand, under the conditions of FIG. 5, the respective torque ratios of the bolt carrier 63 and the magnetism canceling element 100 are maximum in a 90 degree phase shifted position. In this case, the maximum value of the resulting torque rate is lower than the maximum values of the respective torque ratios of the bolt carrier 63 and the magnetism canceling element 100. The behavior described above is the same in the conditions of FIG. 7.

Moreover, in the case where the angle 9a is 90 degrees as in FIG. 6, the torque rates generated in the bolt carrier 63 and the magnetism canceling element 100 are out of phase. Thus, the resulting torque rate is 0 regardless of the angle 0b.

FIG. 10 is a graph illustrating the relationship between the angle 8a and the resulting torque ratio.

From figs. 3 to 9, etc. the relationship between the angle 6a and the resulting torque ratio is shown in FIG. 10. Specifically, the resulting torque rate decreases as the angle 8a approaches 90 degrees. In particular, in the range where the angle Oa is greater than 60 degrees and less than 120 degrees, the phases of the torques generated in the bolt carrier 63 and the magnetism canceling element 100 are significantly shifted by so that these couples tend to act in such a way as to cancel each other out. Thus, in the range where the angle θ is greater than 60 degrees and less than 120 degrees, the resulting torque rate is smaller than 1. In other words, in the range where the angle θ is greater than 60 degrees and smaller than 120 degrees, the maximum value of the resulting torque rate is smaller than the maximum values of the respective torque ratios of the bolt carrier 63 and the magnetism canceling element 100.

In this way, in the present embodiment, the angle θa formed by the first straight line La and the second straight line Lb is chosen in the range where it is greater than 60 degrees and less than 120 degrees.

In this arrangement, the phases of the torques generated in the stud holder 63 and in the magnetism canceling element 100 due to the presence of the magnetic field H are shifted by a large amount, so that couples tend to act in the sense of canceling each other out. Thus, it is possible to reduce the resulting torque (the torque generated in the carriage 41) couples acting on the bolt carrier 63 and the magnetism cancellation element 100.

In addition, in the present embodiment, the magnetism canceling element 100 is simply added to the carriage 41, so that it is possible to avoid an increase in size, as compared with the technique. of the prior art in which the movement 10 and the vortex 13 are themselves covered with magnetic material.

In addition, the couples generated in the two magnetic elements in the presence of the magnetic field H cancel each other, so that, unlike the usual solution in which the magnetic flux is simply passed, it is possible to obtain a superior magnetic resistance regardless of the strength of the magnetic field.

In addition, in the present embodiment, the magnetism cancellation element 100 is mounted in the carriage 41 while being independent of the functional components of the timepiece 1. The functional components of the workpiece watchmaking 1 are the components intended to perform the driving function of the needles of the timepiece 1, by cooperation with the other functional components of the timepiece 1.

In this embodiment, the magnetism cancellation element 100 can be mounted in the carriage 41 without having to cooperate with other functional components. As a result, it is possible to choose the layout and shape of the magnetism canceling element 100 relatively freely, depending on the arrangement, the shape, etc. the magnetic element formed by the bolt carrier 63. As a result, it is possible to obtain a progress concerning the properties of the architecture and the freedom of design and to obtain another progress concerning the magnetic resistance, compared to the case where the two magnetic elements, whose couples cancel each other out, are functional components.

Variant [0082] In the timepiece 1 according to the embodiment described above, among the functional components extending in the radial direction (the bolt carrier 63, the racket 65 and the anchor body 92) only the bolt carrier 63 constitutes a magnetic element, however this must not be understood restrictively. In other words, any other constitution may be suitable since at least one of the three functional elements mentioned above is a magnetic element. In other words, any arrangement will be suitable as soon as the angle between the functional element which is the magnetic element and the magnetic cancellation element (the angle formed by the lines connecting the axis 01 and the outermost end surfaces in a radial direction) is selected to be greater than 60 degrees and less than 120 degrees.

In the case where two of the three functional components mentioned above are magnetic elements, the angle between the magnetic elements can be chosen to be greater than 60 degrees and smaller than 120 degrees. More specifically, in the vortex 13 shown in FIG. 11, the bolt carrier 63 and the anchor body 92 are magnetic elements. The bolt carrier 63 and the anchor body 92 are arranged such that an angle θc between the two straight lines Le and Ld connecting their respective outwardmost end surfaces in a radial direction and axis 01 is 90 degrees. In the example shown in FIG. 12, the bolt carrier 63 and the anchor body 92 are positioned such that an angle 6d between the two straight lines Le and Ld connecting their respective outwardmost end surfaces in a direction radial and the axis 01 is 75 degrees. No racket 65 is provided in the examples shown in FIGS. 11 and 12.

In this arrangement, the torques generated in the bolt carrier 63 and the anchor body 92 in the presence of the magnetic field H can easily be exerted so as to cancel each other out. This produces the same effect as that of the embodiment described above. In particular, in the present embodiment, because of the arrangement of the bolt carrier 63 and the anchor body 92, which are functional components, it is possible to reduce the influence of the magnetic field H, so that it is possible to obtain a reduction in the number of components, etc. in comparison to the case where a magnetism cancellation element is provided separately.

Even in the case where two of the three functional components mentioned above are magnetic elements, the magnetism cancellation element can be provided independently. In this case, the angle between one of the two magnetic elements and the magnetism canceling element, and the angle between the other magnetic element and the magnetism canceling element are chosen so as to be greater than 60 degrees and less than 120 degrees (preferably 90 degrees).

In addition, the two magnetic elements may be arranged in such a way that the angle between them is greater than 120 degrees and less than 180 degrees, and the magnetism canceling element can be arranged in a dividing position ( for example in two equal parts) the angle between the two magnetic elements.

In addition, the three functional elements can all form magnetic elements. In this case, it is preferable that the angle between two of the three magnetic elements is chosen to be greater than 120 degrees and less than 180 degrees, and that the remaining magnetic element is disposed in a dividing position (for example in two equal parts) the angle between the two magnetic elements. The remaining magnetic element can be arranged in a range of +30 degrees to -30 degrees from the position dividing the angle between the two magnetic elements into two equal parts.

In addition, even in the case where the three aforementioned functional components are all magnetic elements, a magnetism cancellation element can be provided in isolation. In this case, all that is required is that the angle between the two elements of each pair of adjacent elements among the elements that are the three magnetic elements and the magnetism cancellation element be disposed in a range of 90 degrees ± 30 degrees.

In this way, in the present embodiment, any construction will be suitable as soon as the angle formed by each pair of magnetic elements which, among the magnetic elements including the magnetism cancellation elements, are adjacent in the circumferential direction (the angle between the straight lines connecting their most outwardly facing end surfaces in a radial direction and the axis O1) is chosen to be larger than 60 degrees and less than 120 degrees. In this case, one of the magnetic elements adjacent to each other in the peripheral direction constitutes the first magnetic element, while the other magnetic element among these magnetic elements adjacent to each other in the direction device is the second magnetic element.

Second Embodiment [0090] Now, a second embodiment of the present invention will be described. Fig. 13 is a plan view of a carriage 110 according to the second embodiment. In the following description, components identical to those of the first embodiment described above are designated by the same reference numerals and a description thereof will be omitted.

In the carriage 110 shown in FIG. 13, the anchor body 92, the bolt carrier 63 and the racket 65 are all magnetic elements. The anchor body 92 and the stud carrier 63 are arranged such that the angle between the straight lines connecting their most outwardly facing end surfaces in a radial direction and the axis 01 is 180 degrees.

The racket 65 is arranged such that the angle between the anchor body 92 and the bolt carrier 63 is 90 degrees. In this case, the outermost end surface in a radial direction of the racket arm 111 of the racket 65 is on the outer side, in a radial direction, of the main carriage plate 44. .

Here, in the case where the anchor body 92 and the stud holder 63 are arranged to form an angle of 180 degrees, the pairs of the anchor body 92 and the bolt carrier 63 at the The outermost end surfaces in a radial direction about the axis 01 are generated in the same direction and with the same phase. In this way, the maximum value of the torque resulting from the anchor body 92 and the bolt carrier 63 is approximately of the order of twice the torques generated respectively in the anchor body 92 and in the bolt carrier 63 (see FIG. Fig. 10).

Furthermore, the racket 65 is disposed at an angle of 90 degrees with respect to the anchor body 92 and the bolt carrier 63, so that the torque, around the axis 01, of the racket 65, at the most outwardly facing end surface in a radial direction is generated with a reverse phase of the anchor body phase 92 and the bolt carrier 63 in an opposite direction.

In view of this, in the present embodiment, the length of the racket 65 in a radial direction is chosen so that the torque, around the axis 01, of the racket 65 at the surface of the The outermost end in a radial direction is equivalent to the resulting torque of the anchor body 92 and the bolt carrier 63. As a result, it is possible to cancel by the torque generated in the racket 65 , the torques generated in the bolt carrier and in the anchor body 92.

In addition, because of the arrangement of the bolt carrier 63, the anchor body 92 and the racket 65 which are all functional components, it is possible to reduce the influence of the magnetic field H, if although it is possible to obtain a reduction in the number of components, etc. in comparison with the case where the magnetism cancellation element is provided autonomously.

Variant [0097] In the second embodiment described above, by means of an extension of the racket arm 111 on one side in a radial direction, the torque, around the axis 01, of the racket 65 to the level of the outermost end surface in a radial direction is set to be equivalent to the resulting torque of the anchor body 92 and the bolt carrier 63, however this should not be restrictively understood . For example, as shown in FIG. 14, a pair of racket arms 121 and 122 may protrude on both sides, in radial directions, from the racket base 95.

More specifically, the racket arms 121 and 122 project from the racket base 95 so that the angle between the straight lines connecting the outermost end surfaces in a direction radial, racket arms 121 and 122 and the axis 01 is 180 degrees. In this way, the angle between the anchor body 92 and the racket arm 121 among the racket arms 121 and 122 is chosen to be 90 degrees. The angle between the other racket arm 122 and the stud holder 63 is selected to be 90 degrees. The racquet pin 77 mentioned above and the racket key 78 are mounted on the racket arm 121.

Claims (5)

Here, the radial length of the racket arm 121 is chosen so that the torque around the axis 01 at its most outward surface in a radial direction is equivalent to the torque generated in the anchor body 92. In addition, the radial length of the other racket arm 121 is chosen so that the torque around the axis 01 at its outermost end surface in a radial direction is equivalent to the torque generated in the bolt carrier 63. In this construction, it is possible to prevent the racket arms 121 and 122 from protruding and protruding from the main carriage plate 44 in a radial direction, so that it is possible to avoid an increase in size. Third Embodiment [0101] Now, the third embodiment of the present invention will be described. The present embodiment differs from the previously described embodiments in that the shafts of the carriage shafts 46 and 47 are located at off-axis positions relative to the axis 01 of the carriage main plate 44. In the present embodiment of realization, the bolt carrier 63 and a magnetism canceling element 130 are magnetic elements. In the carriage 131 shown in FIG. 15, the carriage shafts 46 and 47 are arranged coaxially with an axis 02 of the anchor shaft 91. In addition, the magnetism canceling element 130 is provided on the balance bridge 55. The element Magnetic cancellation 130 is shaped as a plate extending in a radial direction. Here, it is considered that the straight line connecting the outermost end surface, in a radial direction, of the aforementioned bolt carrier 63 (piton arm 72) and the axis 02 is a first line. Lf right and that the straight line connecting the outermost end surface, in a radial direction, the magnetism cancellation element 130 and the axis 02 is a second straight line Lg. Then, it is preferable that the bolt carrier 63 and the magnetism canceling element 130 are arranged such that an angle 8f between the first straight line Lf and the second straight line Lg is greater than 60 degrees and lower. at 120 degrees. In the present embodiment, the angle θf is chosen to be approximately 90 degrees. As in the present embodiment, it is not always necessary for the magnetic element including the magnetism cancellation element 130 to extend in a radial direction of the axes of the carriage shafts 46 and 47. since it extends in one direction in a plan view obtained by looking from the axial direction of the carriage shafts 46 and 47. In this construction also, it is possible to obtain the same effect as with the embodiments described above. The technical scope of the present invention is not limited to the embodiments described above, but allows various modifications without departing from the scope in its generality of the present invention. In the embodiments described above, at least one of the anchor body 92, the bolt carrier 63 and the racket 65 is a magnetic element; however, this should not be interpreted restrictively; other functional components may be magnetic elements. While in the embodiments described above, the axes of the carriage shafts 46 and 47 are arranged coaxially with the axis 01 of the main carriage plate 44 or with the axis 02 of the anchor 53, the axes of the carriage shafts 46 and 47 can be placed in arbitrary positions. Several magnetism cancellation elements may be provided provided that at least one of the magnetic elements is a functional component. In addition, each magnetic element may extend by being inclined with respect to the axial direction in a side view obtained by looking from a radial direction, since it extends in a direction which is a direction longitudinal, in a plan view obtained by looking from the axial direction. The components of the embodiments described above may be replaced by well-known components, as appropriate, without departing from the more general scope of the present invention. In addition, the variants described above can be combined with each other appropriately. claims A vortex comprising: - a carriage which is rotatable about an axis of a carriage shaft and wherein a regulator-exhaust assembly is mounted; a first magnetic element which extends in a first direction in a plan view obtained by looking from the axial direction of the carriage shaft and which is a functional component of a timepiece; and a second magnetic element which extends in a second direction intersecting the first direction in the plan view, in which, in the plan view, an angle between, on the one hand, a first straight line connecting the axis and an end surface of the first magnetic element, i.e., its end surface being the outermost in the first direction, and, secondly, a second straight line connecting the axis and a surface of the first magnetic element. the end of the second magnetic element, that is, its outermost end surface in the second direction, is greater than 60 degrees and smaller than 120 degrees. 2. Tourbillon according to claim 1, wherein the second magnetic element is a functional component of the timepiece. The vortex according to claim 1, wherein the second magnetic element is a magnetism canceling element mounted in the carriage independently of the functional components of the timepiece. 4. A movement comprising a vortex according to one of claims 1 to 3. 5. Timepiece comprising a movement according to claim 4.