CH711900A2 - Piton mount with secure mounting. - Google Patents

Abstract

The present invention relates to a holding or support assembly (1) of a clockwork spiral spring, comprising a stud (7) and a cock (2) on which is fixed a stud holder (4), characterized in that said stud holder comprises a holding means (5) provided with a housing (53) for accommodating the stud and a clamping means (6), said at least one clamping means being movable relative to the holding means to block the piton in his home.

Description

Description: [0001] The present invention relates to a holding or support assembly for a clockwork spiral spring, comprising a stud and a stud holder.

PRIOR ART

In a mechanical watch, it is customary to use a regulating member comprising a sprung balance device. Conventionally, the inner end of the hairspring is fixed to a ferrule provided on the axis of pivoting of the balance. In order to fix and position the outer end of the hairspring, it is known to use a peg holder housing a pin, in combination with a clamping screw for tightening the bolt against the portion of the hairspring engaged in the bolt carrier.

In such an assembly, the peg carrier is conventionally attached to a cock also serving to fix one end of the axis of the balance. The rooster is designed to integrate a kitten equipped with a shockproof device for the balance shaft. A known stud holder uses two rings. These two rings are rotatably mounted at the level of the kitten. Each ring includes a tuning fork or Y-shaped extension, this y-fork thus forming a housing.

A first ring is then used for the pin is housed and fixed via a screw while the second ring is used for a setting element is housed. This adjustment element makes it possible to adjust the limitation of the hairspring to adjust the step and therefore the frequency of the hairspring.

However, such a device has the disadvantage of being complicated to use during a maintenance operation or repair by the after-sales service. Indeed, the presence of a multitude of parts and the fact of having to screw the stud to maintain it makes this delicate operation and then requires adjustment steps.

SUMMARY OF THE INVENTION

The invention aims to overcome the disadvantages of the prior art by proposing to provide a holding or support assembly of a spiral spring clock that allows a mounting or a simplified disassembly of the pin and a good maintenance of it.

For this purpose, the present invention relates to a holding or supporting assembly of a spiral spring clock, comprising a stud and a cock on which is fixed a pin holder, characterized in that said holder piton comprises a holding means provided with a housing for housing the stud and a clamping means, at least said clamping means being movable relative to the holding means to block the stud in its housing.

The advantage of the invention is to allow, during the service, to disassemble the assembly "balance bridge-spiral silicon" easily. By unlocking the bolt through the clamping means, it is possible to simply remove the "balance spring - hairspring - bolt" portion of the "swing bridge - peg holder - damper" without risk of breaking the hairspring.

In a first advantageous embodiment, the holding means and the clamping means are in the form of an annular piece arranged to be rotatably mounted on a protuberance 8.

In a second advantageous embodiment, the holding means are in the form of a retaining ring 50 comprising means for receiving the stud 51 having two protrusions 52 projecting from said retaining ring 50 and being spaced apart. between them to form a housing 53 in which the pin 7 can be housed.

In a third advantageous embodiment, the holding means are in the form of a retaining ring 50 comprising receiving means of the stud 51 having an outgrowth 52 'protruding from said retaining ring 50, said protrusion being provided with an opening forming a housing 53 'in which the stud 7 can be housed.

In a fourth advantageous embodiment, the clamping means are in the form of a ring 60 further comprises an elastic arm 62 extending from the clamping ring 60 in a direction substantially similar to that of the curvature of said clamping ring to form a space 64 between the clamping ring 60 and said arm 62, said space 62 allowing the pin to be inserted and to be pressed into its housing (53, 53 ') by said elastic arm.

In a fifth advantageous embodiment, the holding means are in the form of a retaining ring 500 comprising an elastic arm 512 extending from said ring and forming, with it, a housing 514 to accommodate the peak.

In a sixth advantageous embodiment, the clamping means are in the form of a clamping ring 600 comprising a frame 604 on which a pad 602 is arranged, the armature and the pad being arranged so that the rotation of the clamping ring relative to the retaining ring causes the appearance of a constraint exerted by said stud on said elastic arm in order to lock the mounting of the stud.

In a seventh advantageous embodiment, the clamping means are in the form of a clamping ring 600 comprising a frame 604 on which a structure provided with a groove is arranged, the groove being arranged so that the elastic arm can be inserted so that the rotation of said locking ring relative to the retaining ring causes deformation of said arm to lock the mounting of the stud.

In another advantageous embodiment, the armature comprises at least two arms extending radially connected by a cross member, the at least two arms being spaced apart so as to allow the bolt to be placed and locked. without risk of contact with said arms.

In another advantageous embodiment, the clamping ring and the retaining ring each comprise a positioning extension (56,66) extending radially and allowing its gripping by a tweezers-type tool to rotate the clamp ring and retaining ring.

In another advantageous embodiment, the positioning extension of the clamping ring and one of the arms of the frame form one and the same piece.

In another advantageous embodiment, the positioning extensions (56, 66) of the clamping ring and the retaining ring are arranged to lie opposite one another when the bolt is locked. so as to allow their simultaneous gripping to perform an angular adjustment of the position of the piton relative to the rooster.

BRIEF DESCRIPTION OF THE FIGURES

The objects, advantages and features of the invention will appear more clearly in the following detailed description of at least one embodiment of the invention given solely by way of non-limiting example and illustrated by the accompanying drawings in which: :

Figs. 1 to 5 show a first embodiment of the holding assembly according to the invention;

Figs. 6 to 10 show a variant of the first embodiment of the holding assembly according to the invention;

Figs. 11 to 15 show a second embodiment of the holding assembly according to the invention;

Figs. 16 and 17 show a variant of the second embodiment of the holding assembly according to the invention.

DETAILED DESCRIPTION

The present invention proceeds from the general idea of providing a holding or support assembly of a spiral spring clock for mounting / dismounting the simplest piton.

In FIG. 1 is shown the holding or support assembly 1 according to the present invention. Such a set 1 is mounted on a cock 2 and includes a bolt carrier 4 used to hold a bolt 7.

The bolt carrier 4 according to the invention comprises holding means 5 and clamping means 6. The holding means 5 are used to carry the bolt 7 while the clamping means 6 are used to lock the bolt. position of the peak 7 at the level of the holding means 5.

In a first embodiment visible in FIGS. 1 to 5, the holding means 5 are in the form of a retaining ring 50. This retaining ring 50 is closed or not and is dimensioned to be arranged at a protuberance 8. The rooster 2 can be realized to include a pivoting device 80, this pivoting device 80 may be in the form of a kitten 81 provided with a pierced stone and stone against pivot 82 and a spring 83 or in the form of a stud 84 provided with a hole 85 in which the balance shaft engages. The protrusion 8 may be this pivoting device 80. This protrusion is circular.

This retaining ring is engaged by force at the pivoting device 8 that is to say at the level of the kitten 80 or the stud 83. A groove extending on the periphery of the stud 83 or the kitten 80 may be performed to avoid a vertical displacement of the retaining ring 50. This retaining ring 50 further comprises means for receiving the pin 51. These receiving means 51 comprise two protuberances 52 projecting, extending parallel to the These two protuberances 52 are spaced apart from one another so as to form a housing space 53 in which the stud 7 can be housed. It is understood that the two protrusions protrude from the retaining ring 50 but also the rooster.

In this first embodiment, the clamping means 6 are in the form of a clamping ring 60. This clamping ring 60 is closed or not and is dimensioned to be arranged at the pivoting device 8 , like the retaining ring. This clamping ring 60 is thus forcibly engaged at the level of the pivoting device 8. A groove extending on the periphery of the pad 83 or the cattery 80, parallel to that of the holding ring 50, may be made to avoid a vertical movement of the clamping ring. The clamping ring is then located above the retaining ring. This clamping ring 60 further comprises an elastic arm 62. This arm 62 extends from said clamping ring 60 and has a free end 63. This arm 62 extends from the clamping ring 60 in a direction substantially similar to that of the curvature of said clamping ring so as to form a space 64 between the clamping ring 60 and said arm 62.

For the operation of this device, the stud 7 is placed in the housing 53 of the retaining ring 50. The clamping ring 60 is then rotated so that the end 63 of the elastic arm 62 is close to the peak. The free end 63 of the elastic arm 62 is cleverly arranged to include a lug 65 so as to be partially in contact with the bolt. Therefore, this forces the operator responsible for the assembly to force slightly during the rotation of the clamping ring 60. The elastic arm 62, under the effect of this constraint, deforms so as to deviate. This causes a larger space for the insertion of the pin 7. When the pin 7 passes the free end 63 of the elastic arm 62 provided with the lug 64, said resilient arm 62 tends to resume its initial or rest position. In this case, it tends to exert a force on the peak. As the stud is in the housing 53 of the retaining ring 50, this force exerted by the resilient arm locks the position of the stud. The clamping ring 60 and the retaining ring 50 must be dimensioned so that the friction between them and the pivoting means 8 can allow rotation of the rings while avoiding a rotation of the rings inadvertently. Thus, by unlocking the bolt through the clamping means, it is simply possible to remove the "balance-sprung-piton" portion of the "swing-gate-peg-damper" portion without risk of breaking the hairspring.

In an advantageous variant visible in FIGS. 4 and 5, the stud 7 has a body 71 arranged so that the hairspring can be attached and a head 72, said head having a conical profile 73 whose diameter is greater than that of the body 71. The head of the piton 72 being fit to bear on the two projections protruding 52. The resilient arm which comes into contact with the stud at this conical profile then exerts a force perpendicular to the slope of the cone in order to press the Z stud against the two protrusions 52 protruding and X-Y in its housing. The housing 53 and / or the peg 7 may include dishes to have an angular locking.

In an advantageous variant visible in FIG. 2, the retaining ring 50 and the clamping ring 60 each have a positioning extension 56, 66. The clamping ring 60 and the retaining ring 50 thus each comprise a radially extending extension, this extension allowing it to be grasped by a tweezers type tool. Cleverly, it will be provided that these extensions 56, 66 are arranged so that they are facing each other when the peak 7 is locked as shown in FIG. 3. This arrangement allows to rotate the clamping means 60 and the holding means 50 at the same time.

In a variant of this first embodiment shown in FIGS. 6 to 10, the retaining ring 50 is formed so that the receiving means of the pin 51 are in the form of a single extension 52 'pierced by an opening forming a housing 53' for the pin 7. In this case , the clamping ring is arranged under the retaining ring and the peg 7 sees its head 72 have an inverted cone profile 73 '. In this variant configuration, the assembly is similar so that the elastic arm 62 comes into contact with the cone 73 'of the peak 7 and generates a force perpendicular to the slope of the cone 73'. This force makes it possible to press the peak 7 in Z in its housing 53 'and X-Y in its housing. The housing and / or the piton may include dishes to have an angular locking.

In a second embodiment visible in FIGS. 11 to 15, the holding means 5 are in the form of a retaining ring 500. This retaining ring 500 is closed or not and is dimensioned to be arranged at the pivoting device 8, the latter being of substantially circular shape. This retaining ring is forcibly engaged at the pivoting device 8, that is to say at the level of the cattery 80 or the pad 83. A groove extending on the periphery of the pad 83 or the catty 80 can be realized. to prevent a vertical displacement of the retaining ring 500. This retaining ring 500 further comprises means for receiving the pin 510. These receiving means 510 comprise an elastic arm 512 extending from said ring and forming, with it, housing 514 to accommodate the piton.

In this second embodiment, the clamping means 6 are in the form of a clamping ring 600. This clamping ring 600 is closed or not and is dimensioned to be arranged at the pivoting device 8. , like the retaining ring. This clamping ring 600 is therefore engaged by force at the pivoting device 8. A groove extending on the periphery of the pad 83 or the catty 80, parallel to that of the retaining ring 500, may be made to avoid a vertical movement of the clamping ring 600. The clamping ring 600 is then located above the retaining ring 500.

This clamping ring 600 comprises a stud 602 mounted on a frame 604. Indeed, the operating principle of this second embodiment uses the pad 602 to exert a constraint on the elastic arm 512 to lock the pin 7 The clamping ring 600 is rotated so that the pad 602 comes into contact with the elastic arm 512. By continuing the rotation of the clamping ring, the stress exerted on the elastic arm 512 causes its deformation and thus the locking of the piton. The armature 604 thus makes it possible to off-center the stud 602. In a conventional manner, the armature 604 may be an arm 605 whose free end 605 'will be provided with said stud 602. This latter may be monoblock with the armature 604 or the free end 605 'will be provided with a hole so that the pad 602 is placed and fixed therein.

In an advantageous version, the armature comprises at least two arms 605a, 605b extending radially from the ring 600, these arms 605 being connected together by a beam or crosses 606. This beam 606 is provided with a protuberance at which the stud is arranged. This configuration makes it possible to have a better rigidity than a reinforcement comprising a single arm.

Claims (13)

In this frame configuration visible in FIG. 11, it is expected that the spacing of at least two arms 605 is sufficient to allow the pin 7 to lodge there without coming into contact with said arms during the rotation of the clamping ring. Advantageously, one of the arms 605 of the armature 604 will be arranged so that, when the stud 7 is locked, said arm is opposite a positioning extension 516 of the holding ring 500. This configuration then forms a possibility for the operator tweezers via tweezers the arm 605 and the extension 516 to angularly change the position of the two rings 500 and 600. This thus provides a possibility of angular adjustment without changing the locking of the bolt 7. In a configuration preferred, the armature 604 comprises four arms 605. The spacing between the second arm 605 and the third arm 605 is chosen to accommodate the stud 7. The fourth arm 605 is arranged to be used in cooperation with an extension 516 to modify the angular position of the two rings 500, 600. It will be possible that the pin 7 has a body 710 arranged so that the hairspring can be attached and a head e 720, said head 720 having a cylindrical profile 730. The body 710 further comprising a projection 740 forming a platform for the elastic arm 512 as shown in FIG. 14. In a variant of the second embodiment shown in FIGS. 16 and 17, the armature 604 comprises an arm 609 whose free end 609 'ends with a structure 610. This structure 610 is in the form of a part 611 having a groove 612 assimilated to a guide groove in which the elastic arm 512 of the retaining ring 500 is housed. The tension of the elastic arm 512 allows the latter to be in permanent contact with one of the walls of the groove 612 of the structure 610. Therefore, during the rotation of the clamping ring 600 carrying the armature 604, the elastic arm 512 guided by the groove of the structure 610 then deforms. This deformation allows the elastic arm 512 to tighten the stud 7 and thus to lock the position of the latter. It will be understood that various modifications and / or improvements and / or combinations obvious to those skilled in the art can be made to the various embodiments of the invention described above without departing from the scope of the invention defined by the appended claims. For example, we can imagine that the hairspring is of a smaller diameter than the size of the peg holder so that it is protected by said bolt carrier. Indeed, it has become common to use silicon spirals, this material has interesting non-magnetic properties. However, silicon is a fragile material that breaks during excessive shocks. By configuring the stud holder and the hairspring to have a hairspring of smaller size than the bolt carrier, the bolt carrier is used as protection for the silicon hairspring against possible shocks that may occur during the setting of the watch or after sales service. claims 1. Support or support assembly (1) of a spiral clockwork spring, comprising a stud (7) and a cock (2) on which is fixed a stud holder (4), characterized in that said pin holder comprises a holding means (5) provided with a housing (53, 53 ', 514) for accommodating the pin and a clamping means (6), at least said clamping means being movable relative to the means in order to block the piton in its housing. 2. An assembly according to claim 1, characterized in that the holding means (5) and the clamping means (6) are in the form of an annular piece arranged to be rotatably mounted on a protuberance (8). 3. An assembly according to claim 2, characterized in that the holding means are in the form of a retaining ring (50) comprising means for receiving the pin (51) having two projections (52) projecting from said retaining ring (50) and being spaced apart to form a housing (53) in which the stud (7) can be housed. 4. An assembly according to claim 2, characterized in that the holding means are in the form of a retaining ring (50) comprising means for receiving the stud (51) having an outgrowth (52 ') projecting from said holding ring (50), said protrusion being provided with an opening forming a housing (53 ') in which the stud (7) can be housed. 5. An assembly according to one of claims 3 or 4, characterized in that the clamping means are in the form of a clamping ring (60) further comprising an elastic arm (62) extending from said ring in a direction substantially similar to that of the curvature of said clamping ring to form a gap (64) between the clamping ring (60) and said arm (62), said gap (62) allowing the piton to be inserted and to be pressed into its housing (53, 53 ') by said elastic arm. 6. An assembly according to claim 2, characterized in that the holding means are in the form of a retaining ring (500) comprising an elastic arm (512) extending from said ring and forming, with it, a housing (514) to accommodate the piton. 7. The assembly of claim 6, characterized in that the clamping means are in the form of a clamping ring (600) comprising a frame (604) on which a pad (602) is arranged, the frame and the stud being arranged so that the rotation of the clamping ring relative to the holding ring (500) causes the appearance of a constraint exerted by said stud (602) on said elastic arm (512) in order to lock the mount of the piton. 8. The assembly of claim 6, characterized in that the clamping means are in the form of a clamping ring (600) comprising a frame (604) on which a structure (610) provided with a groove (612). ) is arranged, the groove being arranged so that the elastic arm can be inserted so that the rotation of said locking ring relative to the retaining ring causes a deformation of said arm to lock the fitting of the stud. 9. An assembly according to claim 7, characterized in that the armature (604) comprises at least two arms (605) extending radially interconnected by a cross member (606), the at least two arms being spaced apart so to allow the bolt to be placed and locked without risk of contact with said arms. 10. Assembly according to one of claims 2 to 9, characterized in that the clamping ring and the retaining ring each comprise a positioning extension (56, 66) extending radially and allowing its gripping by a type of tool tweezers for rotating the clamping ring and the retaining ring. 11. An assembly according to claims 9 and 10, characterized in that the positioning extension of the clamping ring and one arm of the frame form a single piece. 12. Assembly according to one of claims 10 or 11, characterized in that the positioning extensions (56, 66) of the clamping ring and the retaining ring are arranged to lie opposite one of the other when the bolt is locked so as to allow their simultaneous gripping to make an angular adjustment of the position of the bolt relative to the rooster. 13. A watch movement comprising a plate on which is mounted a source of energy supplying energy to the gear trains, these wheels cooperating with an exhaust system via an escape wheel whose rotation is regulated by an anchor of exhaust system whose pulses are provided by a balance spring, said spiral being mounted on a holding assembly according to one of the preceding claims.