Classifications

• • G—PHYSICS
  • G04—HOROLOGY
  • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
  • G04B17/00—Mechanisms for stabilising frequency
  • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
  • G04B17/34—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring onto the balance
  • G04B17/345—Details of the spiral roll

Definitions

• the invention relates to an elastic retaining member for fixing a timepiece component to support elements of different types such as a balance shaft or a dummy axle.
• the invention also relates to an elastic retainer assembly - watch component and assemblies comprising such an assembly and a support element.
• the invention relates to a watch movement comprising at least one of these assemblies as well as to a timepiece comprising such a movement.
• the ferrule of a given hairspring is then driven onto a false-axis of circular cross section which helps to ensure that it is held in an angular and vertical position.
• the diameter of this false-axis is defined as a function of the diameter of the opening of the spiral shell and this, so that the maintenance in angular and vertical position of this shell, when measuring the torque of the balance spring, is obtained by tightening this ferrule on this false axis.
• Such tightening which results from the elastic deformation of the shell, has a value defined as a function of the diameter of the false-axis.
• the hairspring shell is then separated / released from the false axle with a view to its assembly by driving it on the balance shaft so that the parts holding the balance ferrule cooperate with this balance shaft to ensure elastic clamping.
• the driving on the false-axis of this ferrule can generate tensions in the material of this hairspring and generate a risk of scratching which can turn out to be very critical because inducing the onset of rupture at the level of the shell with a risk of breakage thereof which will be detected later when it is set in motion.
• the aim of the present invention is to overcome all or part of the drawbacks mentioned above by providing an elastic retaining member comprising several specific retaining parts each provided to cooperate exclusively with a given type of support element and in particular with the wall. peripheral of this support element when mounting this member on the latter.
• the invention relates to an elastic retaining member for fixing a timepiece component on support elements of different cross section, comprising an opening into which each support element can be inserted, the retaining member comprising structural elements together forming the body of this retaining member and helping to ensure mounting of each support element in said opening each of these structural elements comprising a first structural sub-element and a second sub-element structural, the first structural sub-element comprising a volume of material greater than the volume of material constituting the second structural sub-element, the holding member comprising a connecting portion ensuring the mounting in the holding member of each of said elements of support, said portion being defined on an interior face of said first structural sub-element.
• this retaining member the same connecting portion of a first structural sub-element of each structural element of the retaining member thanks to its characteristics, is stressed both during the assembly of this member on the false-axis and when driving the latter onto a support element such as the balance shaft, whatever the shape geometric shape of the cross section of this support element.
• the connecting portions of the first structural sub-elements of such a holding member make it possible to mount this member on the false-axis by carrying out a fitting and a coupling of this member. maintenance with this false-axis and this, without this assembly requiring a driving-in operation as is the case in the state of the art.
• This fitting provides for the positioning of this holding member in an angular and vertical position on the false-axis, in particular when measuring the torque of a hairspring, without elastic clamping, that is to say without deformation of the structural elements, either without deformation of this retaining member.
• a coupling between the holding member and the false axis necessary for carrying out the classification operation is obtained without elastic clamping and this, thanks in particular to the complementarity of their shape which thus allows cooperation between the latter when 'they are driven in a rotational movement during the performance of the classification operation, and also thanks to the distribution of the volume / quantity of material between the first and second structural sub-elements of each structural element constituting this holding member .
• the connecting portion is defined only on the inner face of said first structural sub-element
• the connecting portion comprises first and second retaining parts ensuring the mounting in the retaining member of each of said support elements
• first and second holding parts each comprise at least one contact zone configured to cooperate with the corresponding support element; - at least one contact zone of the first and second holding parts is included in the connecting portion of each first structural sub-element of the holding member, extending over all or part of a thickness of this holding member. maintenance;
• Each contact zone of the first and second holding parts is able to cooperate with a corresponding contact portion of the corresponding support element while being in a contact configuration of the plano-convex type;
• the first retaining part comprises two convex contact zones delimiting a connecting portion of each first structural sub-element
• the second holding part comprises two flat contact zones distributed disjointly over a connecting portion of each first structural sub-element between the two contact zones of the first holding part;
• each first structural sub-element comprises a single flat contact zone arranged equidistant from the two convex contact zones of the first holding part;
• the retaining member includes as many first structural sub-elements as second structural sub-elements;
• first structural sub-elements and the second structural sub-elements are arranged in the retaining member successively and alternately; each first structural sub-element is connected at its two opposite ends to two different second structural sub-elements;
• each second structural sub-element has a cross section which is smaller than a cross section of each first structural sub-element
• each second structural sub-element has a cross section which is constant throughout the body of this second structural sub-element
• the retaining member includes an attachment point with the timepiece component
• the retaining member is a ferrule for fixing the timepiece component such as a hairspring to a support element such as a balance shaft or a dummy axle;
• the holding member is made of a micromachinable material comprising silicon, quartz, corundum, silicon and silicon dioxide, DLC, metallic glass, ceramic or any other at least partially amorphous material, or similar.
• the invention also relates to an elastic retaining member - timepiece component assembly for a timepiece movement of a timepiece comprising a retaining member.
• this assembly is in one piece.
• the invention also relates to an assembly comprising an elastic retaining member - timepiece component assembly and a support element, in particular a dummy axle, said assembly being held on said support element from a first retaining part of said. retaining member, said first retaining part being configured to cooperate with a peripheral wall of said support element.
• the assembly comprises an elastic retaining member - timepiece component assembly and a support element, in particular a balance shaft, said assembly being held on said support element from a second retaining part of said control member. holding, said second holding part being configured to cooperate with a peripheral wall of said support member.
• the invention also relates to a watch movement comprising at least one such assembly.
• the invention also relates to a timepiece comprising such a watch movement.
• FIG. 1 is a view of an elastic retaining member for fixing a timepiece component assembled to a support element such as a false axis, according to one embodiment of the invention
• Figure 2 is a view of an elastic retaining member for fixing a timepiece component assembled to a support element such as a balance shaft, according to the embodiment of the invention
• Figure 3 is a view of the elastic retainer for fixing the timepiece component on the support element, according to the embodiment of the invention.
• FIG. 4 represents a view on a larger scale of part A of FIG. 3 from another viewing angle, according to the embodiment of the invention
• FIG. 5 represents an assembly comprising an elastic holding member - timepiece component assembly fixed to a support element such as a false-axis included in a device for performing a classification operation, according to the embodiment of invention
• FIG. 6 represents a timepiece comprising a timepiece movement provided with at least one assembly comprising a resilient holding member - timepiece component assembly fixed to a support element such as a balance shaft, according to the embodiment of the invention, and
• FIG. 7 represents a method of making such assemblies of an elastic retaining member assembly - watch component with a support element of the false-axis or balance shaft type.
• FIGS. 1 to 4 show an embodiment of the resilient holding member 1 for fixing a timepiece component 2 on a support element 3a, 3b.
• the elastic retaining member 1 can be a ferrule for fixing the timepiece component 2 such as a balance spring to a support element 3a, 3b such as a "false axis" 3a and a balance shaft 3b visible respectively in Figures 1 and 2.
• This false axis 3a also called adjustment axis, false shaft or classification axis is specifically used in the context of adjusting a balance-spring assembly according to different known techniques such as the so-called omega-metric technique consisting in performing a classification of the springs, a classification of the balances, a pairing of a balance chosen in a particular class, with a hairspring also chosen in a particular class, these classes being compatible between them.
• omega-metric technique consisting in performing a classification of the springs, a classification of the balances, a pairing of a balance chosen in a particular class, with a hairspring also chosen in a particular class, these classes being compatible between them.
• the balance shaft 3b it may also be called by its synonym balance axis and is in particular designed to receive the ferrule.
• This elastic retaining member 1 is made of a so-called “fragile” material, preferably a micromachinable material.
• fragmentile material may include silicon, quartz, corundum, silicon and silicon dioxide, DLC, metallic glass, ceramic, other at least partially amorphous material, or the like.
• this retaining member 1 can be included in an assembly 120 elastic retaining member - timepiece component visible in FIGS. 5 and 6.
• Such an assembly 120 is intended to be arranged in a timepiece movement. 1 10 of a timepiece 100 visible in Figure 6, and also to be driven on a support element 3a such as the balance shaft or to be placed on a support element 3b such as the false axis during the performance of a classification operation.
• Such an assembly 120 can be a single piece and be made of a “fragile” material similar to that of the ferrule.
• This assembly 120 may form part of an assembly 130a, 130b for the watch movement 110 or else for a device 140 for performing a classification operation, by being mounted on the support element 3a, 3b, here the balance shaft or the off-axis.
• a device 140 visible in Figure 5 comprises in particular a measuring module 150 and the support element 3a here the false axis 3a.
• this assembly 130a, 130b was designed for applications in the watchmaking field. However, the invention can perfectly be implemented in other fields such as aeronautics, jewelry, or even automotive.
• Such a holding member 1 comprises external and internal structures 4a, 4b as well as an upper face and a lower face 12 of preferably planes which are both respectively included in first and second planes P1 and P2.
• the outer and inner peripheral walls 4a, 4b define different shapes of the holding member 1.
• This retaining member 1 has a thickness which extends from the upper face to the lower face 12.
• this retaining member 1 can correspond to any type of ferrule comprising arms 6. each comprising an elastic sub-arm or rigid and elastic sub-arms 7a, 7b.
• each structural element 6 comprises a portion of the outer and inner peripheral walls 4a, 4b as well as a portion of the upper and lower faces 12.
• These structural elements 6 are preferably solid. In other words, these structural elements 6 are preferably not hollow.
• the rigid sub-arms 7a and the elastic sub-arms 7b are called hereinafter respectively first structural sub-elements 7a and second structural sub-elements 7b.
• the outer peripheral wall 4a of such a retaining member 1 may have any shape, for example being essentially triangular, circular or even a shape similar to that of a quadrilateral.
• the internal peripheral wall 4b of this retaining member 1 participates in defining the opening 5 of this retaining member 1 into which the support element 3a, 3b is intended to be inserted.
• This opening 5 defines a volume in the holding member 1 which is smaller than that of a connecting part of one end of the support element 3a, 3b which is intended to be arranged there.
• this connecting part comprises all or part of the portions 10 defined on the wall.
• first and second holding parts 20a, 20b are each intended to ensure mounting of said retaining member 1 on support elements 3a, 3b different here a balance shaft and a false axis.
• these first and second holding parts 20a, 20b each comprise at least one contact zone 8a, 8b configured to cooperate with the corresponding support element 3a, 3b.
• Each contact zone 8a, 8b of the first and second holding parts 20a, 20b is able to cooperate with a corresponding contact portion 10 of the corresponding support element 3a, 3b by being preferably in a contact configuration of the plane type. -convex.
• outer peripheral wall 4a it is in particular intended to be connected to the timepiece component 2 by means of at least one attachment point 1 1 arranged in the outer peripheral wall of the holding member. 1.
• a retaining member 1 such as a ferrule illustrated in FIGS. 1 to 4, comprising structural elements 6 each comprising a first structural sub-element 7a and a second structural sub-element 7b.
• This retaining member 1 comprises an internal surface 4b having a generally hexagonal shape comprising parts having convex shapes. Each of these parts is included in a connecting zone 9 connecting a second structural sub-element 7b to a first structural sub-element 7a.
• the inner peripheral wall 4b of this retaining member 1 has a non-triangular shape.
• the connecting part comprises all or part of the portions 10 defined on the peripheral wall 21 of the support element 3a, 3b and which are intended in particular to cooperate with specific first and second retaining parts 20a, 20b and / or dedicated to the first structural sub-elements 7a.
• This retaining member 1 therefore comprises the first structural sub-elements 7a and second structural sub-elements 7b connecting the outer and inner peripheral walls 4a, 4b to one another.
• this holding member 1 comprises as many first structural sub-elements 7a as there are second structural sub-elements 7b.
• the first structural sub-elements 7a are here undeformable or quasi-undeformable and play a role of stiffening elements of the retaining member 1.
• first structural sub-elements 7a, 7b have elastic properties in particular in terms of comparison of the first structural sub-elements 7a. Indeed, these second sub-elements 7b are able to deform mainly in tension but also in torsion. These first structural sub-elements 7a and these second structural sub-elements 7b are defined or even distributed successively and alternately in this support member 1. In other words, these first structural sub-elements 7a are interconnected by said second structural sub-elements 7b. More precisely, each second structural sub-element 7b is connected at its two opposite ends at the level of connection zones 9 to two different first structural sub-elements 7a. As we have already mentioned previously, such first and second structural sub-elements 7a, 7b include in a non-limiting and non-exhaustive manner:
• each first structural sub-element 7a comprises a connecting portion 19 provided with first and second retaining parts 20a, 20b visible in FIG. 4 and which are intended for mounting said holding member 1 respectively on support elements 3a, 3b each having a different cross section.
• this connecting portion 19 is also called “mounting portion 19” or even “assembly portion 19”.
• first and second retaining parts 20a, 20b which may also be called “mounting parts” or “assembly parts or even“ connecting parts ”, are included in a connecting portion 19 of each first structural sub-element 7a , said portion 19 being included in the inner face of the retaining member 1, extending over all or part of the thickness of this retaining member 1.
• each first and second holding part 20a, 20b therefore extends over all or part of the thickness of the holding member 1.
• the first and second holding parts 20a, 20b each comprise at least one contact area 8a, 8b with the corresponding support element 3a, 3b.
• Each contact zone 8a, 8b can be rounded or convex or even flat.
• the contact zone 8a, 8b of each first and second holding parts 20a, 20b is able to cooperate with the peripheral wall 21 of a connecting part of the support element 3a, 3b in particular with a contact portion 10 corresponding defined in this peripheral wall 21 and this, being in a contact configuration of the plano-convex type.
• first structural sub-elements and these second structural sub-elements 7a, 7b connect the outer and inner peripheral walls 4a, 4b of the retaining member 1 to each other.
• these first and second structural and elastic sub-elements 7a, 7b essentially make it possible to achieve a coupling of the elastic clamping type of the support element 3a, 3b in the opening 5 made in this retaining member. 1 which is defined by the inner peripheral wall 4b of this retaining member 1.
• these first structural sub-elements 7a therefore comprise only the contact zones 8a, 8b of the holding member 1 with the support element 3a, 3b which can be defined in all or part of the connecting portion 19 of each first structural sub-element 7a.
• the first holding part 20a comprises at least one contact zone 8a.
• This first holding part 20a is intended to cooperate with the peripheral wall 21 of the support element 3a, for example here the false axis 3a.
• Such a support element 3a has a cross section different from that of another support element 3b such as the balance shaft 3b, the peripheral wall of which is intended to cooperate only with the second holding part 20b of each first sub- structural element 7a of the retaining member 1.
• the difference (s) of this cross section may (or may) relate to the shape of this section, in particular its geometric shape, but not exclusively.
• said at least one contact zone 8a is the only contact zone 8a of the connecting portion 19 of each first structural sub-element 7a which is configured to cooperate exclusively with the peripheral wall 21 of this support element 3a.
• the section of this support element 3a is non-circular, preferably mainly triangular, being formed of three essentially flat faces.
• the flat faces of this support element 3a comprise the contact portions 10 of this element 3a, portions 10 which are therefore also flat.
• the connecting portion 19 of each first structural sub-element 7a comprises a substantially hollow or substantially concave part and two contact areas 8a defined at its ends and extending substantially over all or part of the thickness of the retainer 1. These two contact zones 8a are specifically defined so as to cooperate with the corresponding contact portions 10 included in the peripheral wall 21 of this support element 3a.
• Such contact zones 8a each have a surface preferably convex and delimit the ends of the connecting portion 19 of each first structural sub-element 7a.
• the convex surface of each of these contact zones 8a thus enables them to achieve with the contact portions 10 a contact configuration of the plano-convex type. It should be noted here that the flat face of each contact portion 10 of the support element 3a is assessed relative to the convex surface of each corresponding contact zone 8a opposite which this portion 10 is arranged.
• each first structural sub-element 7a makes it possible to produce a contact pressure between the holding member 1 and the support member 3a during the realization of a mechanical connection between them and this, while consequently reducing the intensity of the stresses at the level of these contact zones 8a and the corresponding contact portions 10a of the support element 3a during assembly and / or the fixing of this retaining member 1 with the support element 3a here the false-axis, which stresses are liable to damage the retaining member 1 by the appearance of breaks / breaks or even cracks.
• the second holding part 20b also comprises at least one contact zone 8b.
• This second holding part 20b is intended to cooperate with the peripheral wall 21 of a support element 3b such as the balance shaft 3b.
• a support element 3b has a cross section different from that of another support element 3a such as the false-axis 3a, the peripheral wall of which is intended to cooperate only with the first holding part 20a of each first sub-element.
• the difference (s) of this cross section can (or can) relate to the shape of this section but not exclusively.
• said at least one contact area 8b is the only contact area 8b of the connecting portion 19 of each first structural sub-element. 7a which is configured to cooperate exclusively with the peripheral wall 21 of this support element 3b.
• each first structural sub-element 7a comprises a substantially hollow or substantially concave part in which two contact zones 8b are included. These two contact areas 8b are able to cooperate with the corresponding contact portions 10 of the support element 3b.
• Such contact zones 8b are defined in the connecting portion 19, in particular in the concave part of this connecting portion 19, extending substantially over all or part of the thickness of the holding member 1.
• these contact zones 8b are flat, each comprising a surface which is entirely or partly flat.
• the two contact zones 8b of each first structural sub-element 7a otherwise called flat contact zones 8b, are respectively included in different planes together forming an obtuse angle. These two contact areas 8b of each first structural sub-element 7a are separate by being spaced from each other.
• the connecting portion 19 comprises a separation zone 18 of the two contact zones 8b of each first structural sub-element 7a visible in FIG. 4.
• the contact zones 8b of the first structural sub-elements 7a are provided in particular to cooperate with the contact portions 10 according to a contact configuration of the plano-convex type in which configuration where the flat surface of each contact zone 8b cooperates with the corresponding convex-shaped contact portion 10 of the support element 3.
• this convex shape of each contact portion 10 is assessed relative to the flat surface of each corresponding contact zone 8b with regard to which this portion 10 is arranged.
• this flat surface of each contact zone 8b forms a plane tangent to the diameter of the support element. In other words, the flat surface is perpendicular to the diameter and therefore to the radius R1 of the support element.
• each first structural sub-element 7a makes it possible to effect a contact pressure between the holding member 1 and the support element 3b during the realization of a mechanical connection between them and this, while consequently reducing the intensity of the stresses at the level of these contact zones 8b and the corresponding contact portions 10 of the support element 3b during the assembly and / or fixing of this retaining member 1 with the support element 3b, which stresses are liable to damage the retaining member 1 by the appearance of breaks / breaks or even cracks.
• these two flat contact zones 8b are preferably distributed separately over the connecting portion 19 of each first structural sub-element 7a and this, between the two contact zones 8a of the first holding part 20a.
• the second holding part 20b comprises a single flat contact zone 8b included on the connecting portion 19 of each first structural sub-element 7a and this, equidistant from the two contact zones 8b of the first holding part. 20a.
• the holding member 1 then comprises twelve contact zones 8a, 8b, six of which referenced 8a are configured to cooperate exclusively with a support element 3a, for example of the false axis type 3a in the context of classification operations, and six others with a support element 3b, for example of the balance shaft type to achieve precise centering of the timepiece component 2, for example a balance spring, in timepiece movement 1 10.
• each first structural sub-element 7a has a volume or quantity of material which is substantially greater than or strictly greater than the volume or the quantity of material constituting each second structural sub-element 7b.
• this distance E is a maximum difference E1 when it is defined between parts of the inner and outer peripheral walls included in each first structural sub-element 7a, that is to say the maximum difference E1 present between the inner and outer faces of this first structural sub-element 7a.
• this maximum distance E1 is defined between a part of the outer peripheral wall of this first structural sub-element 7a and each contact zone 8a dedicated to cooperating with the peripheral wall 21 of the support element 3b such as the false-axis, this contact zone 8a being included in the interior face of the internal peripheral wall of this first structural sub-element 7a. It will also be noted that this maximum distance E1 is greater than a distance E3 defined between a part of the outer peripheral wall of the first structural sub-element 7a and each contact zone 8b dedicated to cooperate with the peripheral wall 21 of the element. support 3b such as the balance shaft 3b, this contact area 8b being included in the inner face of the inner peripheral wall 4b of this first structural sub-element 7a.
• this distance E is a minimum distance E2 when it is defined between parts of the outer and inner peripheral walls 4a, 4b included in the second structural sub-elements 7b, i.e. the minimum distance E2 present between the inner and outer faces. exterior of this second structural sub-element 7b.
• Such a minimum difference E2 is constant or substantially constant over the entire length over which these second structural sub-elements 7b extend. This length is here parallel or substantially parallel to the outer and inner peripheral walls 4a, 4b included in these second structural sub-elements 7b.
• the gap E2 is in this holding member 1, less than the smallest gap defined in the first sub-structural element 7a. In other words, the gap E2 is the smallest gap which is defined between the outer and inner peripheral walls 4a, 4b of this retaining member 1.
• each second structural sub-element 7b has a cross section which is smaller than a cross section of each first structural sub-element 7a.
• the cross section of each second structural sub-element 7b has an area which is less than an area of the cross section of each first structural sub-element 7a.
• the cross section of the second structural sub-element 7b is constant or substantially constant throughout the body of this second structural sub-element 7b while the cross section of the first structural sub-element 7a is inconstant / variable throughout the body of this first structural sub-element 7a.
• each first structural sub-element 7a is preferably a solid or partially solid section which is perpendicular to the longitudinal direction in which the body of this first structural sub-element 7a extends, and
• each second structural sub-element 7b is preferably a solid or partially solid section which is perpendicular to the longitudinal direction in which the body of this second structural sub-element 7b extends.
• Such a configuration of the first structural sub-elements and of the second structural sub-elements 7a, 7b allows the holding member 1 to store a greater quantity of elastic energy for a same tightening compared with the holding members of the state of the art.
• Such a quantity of elastic energy stored in the holding member 1 then makes it possible to obtain a greater holding torque of the holding member on the support element 3a, 3b in the assembly 130a, 130b of the 'assembly 120 holding member - timepiece component with this support element 3a, 3b.
• a surplus of elastic energy stored in the holding member 1 therefore increases the holding torque and allows optimal elastic tightening.
• such a configuration of the holding member 1 makes it possible to store elastic energy ratios which are 6 to 8 times greater than those of the holding members of the state of the art.
• each second structural sub-element 7b allows, during insertion with clamping, a deformation of each second structural sub-element 7b allowing accommodate the deformation of the assembly of the retaining member 1 with the geometry of the connecting part of the support element 3a, 3b on which it is assembled.
• the mode of deformation that each second structural sub-element 7b undergoes is a toroidal torsion coupled with a radial expansion.
• the invention also relates to a method for producing the assembly 130a, 130b of the assembly 120 elastic retaining member - timepiece component with the support element 3a, 3b for example the balance shaft 3b or the off-axis 3a.
• This method comprises a step 13 of mounting the support element 3a, 3b on the retaining member 1.
• the support element 3a, 3b is inserted into the opening 5 of the holding member 1, more precisely the end of this support element 3a, 3b is presented at the entrance of this opening 5 defined by the internal peripheral wall 4b of the holding member 1 in anticipation of the introduction of the connecting part of this support element 3a, 3b into the volume defined in this opening 5.
• this step 13 comprises a sub-step of fitting 14a during which the ferrule is placed on this false-axis 3a in anticipation for example of the performance of the classification operation.
• This step 13 also includes a sub-step 16a of coupling this retaining member 1 with the support element 3a here the false axis 3a.
• the coupling is carried out without elastic clamping, thanks to the complementarity of their shape which thus allows cooperation between the latter when they are driven in a rotational movement during the realization of the classification operation.
• this step 13 comprises a sub-step of elastic deformation 14b of the retaining member 1, in particular of a central zone of this retaining member 1, the contour of which comprises said opening 5, which deformation results from the application of a contact force on the contact zones 8b of the first structural sub-elements 7a by the portions 10 of the peripheral wall 21 of the connecting part of the support element 3b.
• this elastic deformation of the holding member 1 results from the application of the contact force on the contact zones 8b of the first structural sub-elements 7a by the portions 10 of the peripheral wall 21 of the support element 3b.
• Such a deformation sub-sub-step 14b comprises a phase of displacement 15 of the first structural sub-elements 7a under the action of the contact force applied to them.
• Such a displacement of the first structural sub-elements 7a is carried out in a direction comprised between a radial direction B1 with respect to a central axis C common to the support element 3b and to the holding member 1, and a combined direction B2 with this central axis C. It will be noted that this direction B2 is perpendicular to the direction B1 and is oriented in a defined direction from the lower face 12 towards the upper face.
• the contact force is preferably perpendicular or substantially perpendicular to each contact zone 8b.
• each second structural sub-element 7b is driven at its two ends in the same direction of rotation B4 by the first moving structural sub-elements 7a to which such ends are connected.
• first moving structural sub-elements 7a to which such ends are connected.
• Only a part of the body of these second structural sub-elements 7b is deformable in torsion here the ends of these second structural sub-elements 7b.
• Such a first deformation contributes in particular to then causing a deformation of each structural element 6 in torsion.
• This first deformation makes it possible to improve the insertion of the support element 3b in the opening 5 of the retaining member 1 while helping to prevent any breakage of the retaining member 1 and / or any appearance of a crack in this member 1 during its assembly with the support element 3b.
• a second strain otherwise called “tensile strain” or even “elastic strain in extension” of the second structural sub-elements 7b is pulled at its two ends in the longitudinal direction B3 in opposite directions by the first moving structural sub-elements 7a to which such ends are connected.
• Such a second deformation of the second structural sub-element 7b contributes in particular to the fact that each structural element 6 stores a large amount of elastic energy.
• the holding member 1 also stores a large amount of elastic energy
• This double elastic deformation of the second structural sub-elements 7b can be carried out simultaneously or substantially simultaneously, or else successively or substantially successively. It will be noted in the context of the implementation of this phase 15, when this double elastic deformation is carried out successively or substantially successively, the first deformation is then carried out before the second deformation.
• This assembly step 13 then comprises a sub-step 16b of fixing the retaining member 1 on the support element 3b.
• a fixing sub-step 16b comprises a phase 17 of performing a radial elastic clamping of the retaining member 1 on the support element 3b. It is therefore understood that in such a state of stress, the holding member 1 stores a large amount of elastic energy which helps to give it a substantial holding torque, in particular allowing optimum twisting by elastic tightening.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Springs (AREA)
• Micromachines (AREA)
• Clamps And Clips (AREA)
• Connection Of Plates (AREA)

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• 2019
  • 2019-04-08 EP EP19167903.4A patent/EP3722889A1/de not_active Withdrawn
• 2020
  • 2020-04-06 JP JP2021557529A patent/JP7259079B2/ja active Active
  • 2020-04-06 WO PCT/EP2020/059815 patent/WO2020207986A1/fr unknown
  • 2020-04-06 KR KR1020217031585A patent/KR20210134367A/ko not_active Application Discontinuation
  • 2020-04-06 CN CN202080027341.1A patent/CN113632014A/zh active Pending
  • 2020-04-06 EP EP20715113.5A patent/EP3953769A1/de active Pending
  • 2020-04-06 US US17/442,503 patent/US20220155728A1/en active Pending

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