EP3396473B1 - Stossauffangvorrichtung für ein uhrwerk einer armbanduhr - Google Patents

Stossauffangvorrichtung für ein uhrwerk einer armbanduhr Download PDF

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Publication number
EP3396473B1
EP3396473B1 EP17168128.1A EP17168128A EP3396473B1 EP 3396473 B1 EP3396473 B1 EP 3396473B1 EP 17168128 A EP17168128 A EP 17168128A EP 3396473 B1 EP3396473 B1 EP 3396473B1
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EP
European Patent Office
Prior art keywords
ring
fact
leaf spring
casing ring
watch
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EP17168128.1A
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English (en)
French (fr)
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EP3396473A1 (de
Inventor
Robert Scadding Moir
Richard Thomas BOWN
Stephen Sams
David GIGER
Lorenz Brunner
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Richemont International SA
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Richemont International SA
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Priority to EP17168128.1A priority Critical patent/EP3396473B1/de
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    • 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
    • G04B37/00—Cases
    • G04B37/04—Mounting the clockwork in the case; Shock absorbing mountings
    • G04B37/05—Fixed mountings for pocket or wrist watches
    • G04B37/052—Fixed mountings for pocket or wrist watches with shock damping means not related to the winding stem

Definitions

  • the present invention pertains to the field of shock absorbing systems for watches.
  • the invention relates to a shock absorber device for a movement of a watch as defined in claim 1, to a movement casing ring as defined in claim 16, and to a suspension ring for a shock absorber device for a movement of a watch as defined in claim 17.
  • shock absorbing systems known in the art are based on the deformability of a ring-shaped elastic rubber-like material disposed between the watch case and an enveloping piece, in particular a casing ring, of the movement.
  • CH 346825 discloses an annular O-ring-like rubber shock absorber positioned between the casing ring and the watch case.
  • the O-ring presents a hole for passage of the crown stem.
  • CH 700383 discloses an elastic O-ring joint for the watch glass acting also as a shock absorber positioned between the casing ring and the glass.
  • the crown stem is separated into two parts that are connected via a coupling mechanism.
  • US 3 735 584 discloses a watch wherein the movement is mounted by means of a pair of support elements and a pair of shock absorbing rings made of a resilient material which are disposed between each of the support elements and the watch case.
  • FR 1 569 309 discloses a watch comprising a generally cylindrical elastic shock absorbing ring arranged between the watch case and the movement.
  • the internal surface of the watch case middle has an internal groove for enabling greater deformation of the elastic ring.
  • the elastic ring may have an inward, that is to say directed towards the movement, internal groove for receiving a projecting element of the casing ring.
  • the rubber rings of the kind disclosed in the above cited documents occupy a major part of the space allocated between the middle of the watch and the casing ring; thus, upon a shock, the possibility of displacement of the casing ring and the deformation of the rubber material are very limited and the efficiency of shock absorption is poor.
  • a further disadvantage of using rubber is due to its aging behaviour, which often leads to embrittlement of the material over time.
  • CH 701 549 discloses a watch wherein four independent shock absorber elements are arranged between the watch case and the movement for absorbing the energy from shocks and vibrations. Each of these elements comprises a helical spring and a piston and the rigidity of these shock absorber elements may be adjusted from outside the watch.
  • FR 1 512 017 discloses a watch case comprising an outer frame and an inner frame connected by a plurality of spaced apart substantially radially extending elastic elements intended to absorb forces that act on the outer frame. These elastic elements may be cylindrical and made of rubber.
  • WO 2010/019028 discloses a watch case comprising an outer frame and an inner frame connected by a plurality of spaced apart substantially radially extending elastic elements intended to absorb forces that act on the outer frame. These elastic elements may be cylindrical, made of rubber and further comprise a helical spring.
  • the outer frame is provided with openings, such that an elastic element can be positioned in each of the openings from the outside and effect a detachable connection between the frames.
  • US 4,204,396 discloses a shock absorbing system specifically designed for a watch comprising a moulded watchcase of plastic material and a movement having a moulded baseplate.
  • a plurality of resiliently deformable arms or blades have one of their ends moulded in the watchcase material and the other end moulded in the baseplate material. Since these blades are fixed both in the watch case and the movement, their shock absorbing effect is limited.
  • CH 171 429 discloses an anti-shock device comprising a plate attached to a surface of the movement, parallel to the dial.
  • the plate presents a number of cut-outs so as to form at least two elastic resilient blades.
  • the external extremities of the blades are fixed to the watchcase.
  • the plate thus forms a suspension system of the movement inside the watch case.
  • a drawback of this solution resides in the large size, footprint and relative weight of the plate, providing an additional sprung mass to the sprung mass of the movement in the event of sudden deceleration, as happens upon a shock.
  • GB 1 138 119 discloses various embodiments of a suspending device for a watch movement, the device comprising a ring bearing a number of teeth of different shape and orientation in order to provide for radial as well as axial suspension of the movement. Said ring rests on a shoulder arranged at the inner periphery of the watch case and thus allows for relative movement between the watch case and the ring.
  • CH 526 146 discloses a casing ring supposed to maintain a watch movement inside a watch case, the casing ring being equipped with alternating internal and external elements in order to allow for compensation of variations in dimension of the diameter of both the watch case and the watch movement.
  • the present invention proposes a shock absorber device which is defined by the features set forth in claim 1 and which allows to achieve the objectives identified above.
  • the present invention proposes a movement casing ring for a shock absorber device, as defined in claim 16.
  • the invention provides a suspension ring for a shock absorber device for a movement of a watch, as defined in claim 17.
  • the present invention provides a shock absorber device for a movement of a watch comprising a casing ring for said movement and a plurality of elastic elements distributed over the perimeter of said casing ring and arranged between said casing ring and the middle of the watch case wherein said elastic elements are configured as double leaf spring elements having a central root portion fixedly secured to said middle of the watch case and two free tip portions resting on said casing ring.
  • said leaves are arranged in cantilever position carrying loads from said free tips to said fixedly secured root portion.
  • said leaves present a curved shape, said shape being inwards concave over the major part of their length, with an inwards convex tip.
  • said leaves taper from the central root portion to the tips.
  • the thickness of each leaf increases with the square root of the distance from the tips.
  • said movement casing ring presents outwards protrusions arranged to lie between two neighbouring double leaf spring elements.
  • the shock absorber device comprises stiffening means, said stiffening means being configured to stiffen said leaf spring system in the last fractions of potential displacement of said leafs upon a shock.
  • said double leaf spring elements are discrete spaced apart workpieces whose central portions are shaped to be fitted into conjugated receiving portions of the wall of the middle of the watch case.
  • said double leaf spring elements are carried inwards by a supporting ring fitted within the middle of the watch case.
  • said double leaf spring elements are made of one piece with said supporting ring.
  • said supporting ring presents positioning means configured to fit with conjugated stopping means present on the inner wall of the middle of the watch case.
  • said supporting ring presents an interruption arranged versus said positioning means so as to surround a winding crown stem of the watch.
  • said stiffening means comprise outwards bumps configured on the movement casing ring so as to contact said leaves towards the end of their displacement, before the movement casing ring contacts any rigid element integral with the middle.
  • said stiffening means comprise leaflet shaped springs, wherein one leaflet shaped spring is arranged between each said leaf spring and said supporting ring, and wherein said leaflet shaped springs are configured to contact said leaf springs towards the end of the displacement of said leaf springs before the movement casing ring contacts any rigid element integral with the middle.
  • said elastic elements including said supporting ring if present, are made from a material selected from maraging steels and amorphous metals.
  • the invention provides a movement casing ring for a shock absorber device as defined above, wherein said movement casing ring presents outwards protrusions arranged to lie between two neighbouring double leaf spring elements.
  • said casing ring comprises stiffening means, said stiffening means comprising outwards bumps configured on the casing ring so as to contact said leaves towards the end of their displacement, before the casing ring contacts any rigid element integral with the middle .
  • the invention provides a suspension ring for a shock absorber device for a movement of a watch, comprising a supporting ring configured to be fitted within a middle of a watch case and a plurality of elastic elements distributed over the inner perimeter of said supporting ring, wherein said elastic elements are configured as double leaf spring elements projecting inwardly in cantilever position, having a central root portion integral with said supporting ring and two free tip portions resting on a casing ring of said movement.
  • said leaves present a curved shape, said shape being inwards concave over the major part of their length, with an inwards convex tip.
  • said leaves taper from the central root portion to the tips, wherein the thickness of each leaf increases with the square root of the distance from the tips.
  • said supporting ring presents positioning means configured to fit with conjugated stopping means present on the inner wall of the middle of the watch case and in that said supporting ring presents an interruption arranged in respect of said positioning means so as to surround a winding crown stem of the watch.
  • the suspension ring it comprises stiffening means, said stiffening means being configured to stiffen said leaf spring system in the last fractions of potential displacement of said leafs upon a shock.
  • said stiffening means comprises leaflet shaped springs, wherein one leaflet shaped spring is arranged between each said leaf spring and said supporting ring, and wherein said leaflet shaped springs are configured to contact said leaf springs towards the end of the displacement of said leaf springs before the casing ring contacts any rigid element integral with the middle.
  • shock absorber device A first embodiment of the shock absorber device is described hereinafter in conjunction with figures 1 and 2 .
  • Figure 1 is a schematic view of a watch comprising a watch case middle part 1 (hereinafter referred to as the case middle 1), a winding crown 2, a crown stem 3 and a movement 4.
  • the case middle forms part of a watch case together with a case back and a bezel, however it will be appreciated that the case middle can also be formed unitarily with one or both of the bezel and case back parts in alternative constructions.
  • the horologic electronic or mechanical functional components of the movement whose description is not relevant here, are not shown in the drawings.
  • the movement 4 is surrounded by a casing ring 5 and rests on a baseplate 6 ( figure 2 ) which is fixed to the casing ring 5, for example by means of screws (not shown in the drawings).
  • the casing ring 5 comprises an opening 20 that allows free passage to the crown stem 3 in such a way that the stem 3 does not grind or rub against the walls of opening 20. This prevents particles that would result from any grinding from falling into the watch movement 4 and also avoids possible reductions of the water resistance of the crown 2 caused by a lateral force exerted on the stem 3.
  • the casing ring 5 further comprises a cylindrical sidewall 17 covered by a top portion 19 which may accommodate a dial.
  • a structure forming a suspension ring 7 is positioned between the case middle 1 and the casing ring 5.
  • the suspension ring structure comprises an outer supporting ring 8 fitted within the case middle 1.
  • Said supporting ring 8 presents positioning means configured to fit with conjugated stopping means present on the inner wall of the middle of the watch case.
  • the positioning means and the stopping means may, for example, be realised by means of conjugated recesses 9 in the supporting ring 8 and protrusions 10 of the inner wall of the case middle 1.
  • the supporting ring 8 presents an interruption 21 to allow passage of the winding crown stem 3 of the watch.
  • the supporting ring 8 carries a plurality of elastic elements 16 that project inwardly and which are integral and preferably made in one monolithic piece with the supporting ring 8. Elements 16 are distributed over the inner periphery of ring 8 and thus over the perimeter of said casing ring.
  • These elastic elements 16 are configured as double leaf spring elements, having a central root portion 13, two leaves 12a, 12b extending laterally in opposite directions, and two free tip portions 14a, 14b resting on the outer surface of the sidewall 17 of the casing ring 5.
  • the leaves present a curved shape, said shape being inwards concave over the major part of their length, and reversing to an inwards convex tip.
  • the radius of curvature of the major leaf portion is of the same order of magnitude as the radius of curvature of the sidewall 17 of the casing ring 5, but the radius of curvature of a tip 14a, 14b is significantly smaller, the contact point between a leaf spring and the casing ring tends to remain at almost the same point on the leaf spring, that is to say at the tip, as this leaf spring deflects, and therefore the moment arm of the leaf spring advantageously presents relatively minor changes as the spring is loaded.
  • the above-mentioned positioning means 9 and stopping means 10 prevent any movement, in particular any relative rotation, between the root portions 13 of the double leaf spring elements and the case middle 1.
  • the tips 14a, 14b in contact with the casing ring behave as cantilever beams.
  • the leaves taper from the central root portion to the tips and the thickness of a leaf increases with the square root of the distance from the tips.
  • the cylindrical sidewall 17 of the casing ring 5 is made of thin wall portions over the majority of its perimeter to save weight and thereby reduce its sprung mass.
  • the sidewall 17 of casing ring 5 also presents several thicker portions.
  • a first type of thicker portions appear as outwardly projecting protrusions 15 arranged to lie between two neighbouring elastic double leaf spring elements 16, and, more specifically, between respective tips 14a and 14b of these neighbouring double leaf spring elements 16, forming thus abutments for these tips.
  • the protrusions 15 may also house threaded bores (not shown) receiving the screws tightening the baseplate 6 to the casing ring 5.
  • a second type of thicker portions of the casing ring wall appear as outwardly projecting bumps 18 configured on the sidewall 17 of the casing ring so that each bump 18 faces one leaf 12a, 12b, and so as to contact that leaf towards the end of its displacement when the leaves deflect after a shock, preventing the casing ring 5 from coming into contact with any rigid element integral with the case middle.
  • the bumps 18 act as stiffening means which stiffen said leaf spring system during the last fractions of potential displacement of the movement 4 after a shock.
  • Figure 8 is an enlarged schematic view of one leaf spring 12a and the opposing bump 18 in four successive states corresponding to a range of drop heights, the distribution of stresses in the materials as shown being calculated by finite element analysis:
  • Figure 9 is an illustrative plot of the load force (in Newton) versus the relative travel between the pieces (in mm) illustrating the change of behaviour of the shock absorber device after contact between bumps and leaf springs.
  • a second embodiment of the shock absorber device is described hereinafter in conjunction with figures 3 and 4 .
  • This second embodiment differs from the first embodiment principally by the construction of the stiffening means.
  • FIG 3 is a schematic view of a watch comprising a watch case middle 101, a winding crown 102, a crown stem 103 and a movement 104.
  • the horologic functional components of the movement either electronic or mechanical, are not shown in the drawings.
  • the movement 104 is surrounded by a casing ring 105 and rests on a baseplate 106 which is fixed to the casing ring 105, for example by means of screws (not shown in the drawings).
  • the casing ring 105 comprises a cylindrical sidewall 117 covered by a top portion 119 which may accommodate a dial.
  • the sidewall 117 comprises an opening 120 through which the crown stem 103 passes.
  • a structure forming a suspension ring 107 is positioned between the case middle 101 and casing ring 105.
  • the suspension ring structure comprises an outer supporting ring 108 fitted within the case middle 101.
  • Said supporting ring 108 presents positioning means configured to fit with conjugated stopping means present on the inner wall of the middle of the watch case.
  • the positioning means and the stopping means may for example be realised by means of conjugated recesses 109 in the supporting ring 108 and protrusions 110 of the inner wall of the case middle 101.
  • the supporting ring 108 presents an interruption 121 to allow passage of the winding crown stem 103.
  • the supporting ring 108 carries a plurality of inwardly extending elastic elements 116, distributed over its inner periphery and thus over the perimeter of the casing ring.
  • These elastic elements 116 comprise double leaf spring elements 112a, 112b having a central root portion 113 and two free tip portions 114a, 114b resting on the sidewall 117 of said casing ring 105.
  • Each elastic element 116 further comprises a pair of leaflet shaped springs 118, starting from the root portion 113 and extending in opposite directions, wherein one leaflet shaped spring 118 is arranged between each leaf spring 112a, 112b and said supporting ring 108.
  • Each leaf spring and its associated leaflet spring are in substantially parallel arrangement, and preferably the overall length of the leaflet shaped spring 118 being between about 1/3 and 1/2 of the length of the leaf spring 112a, 112b.
  • said leaflet shaped springs 118 are configured to contact said leaf springs 112a, 112b towards the end of the displacement of said leaf springs when the latter deflect under a load exerted by the casing ring 105 onto the tips 114a, 114b, this happening before the casing ring contacts any rigid element integral with the middle.
  • the leaves 112a, 112b present a curved shape, said shape being inwards concave over the majority of their length, and reversing to an inwards convex tip. Since the radius of curvature of the major leaf portion is of the same order of magnitude as the radius of curvature of the sidewall 117 of the casing ring 105, but the radius of curvature of a tip 114a, 114b is significantly smaller, the contact point between a leaf spring and the casing ring remains at almost the same point on the leaf spring, that is to say at the tip, as this leaf spring deflects, and therefore the moment arm of the leaf spring advantageously presents relatively minor changes as the spring is loaded.
  • the above-mentioned positioning means 109 and stopping means 110 prevent any movement, in particular any relative rotation, between the root portions 113 of the double leaf spring elements and the case middle 101.
  • the tips 114a, 114b in contact with the casing ring behave as cantilever beams.
  • the leaves taper from the central root portion to the tips, and the thickness of a leaf increases with the distance from the tips.
  • the leaflets 118 act as stiffening means configured to stiffen the leaf spring system in the last fractions of potential displacement of the movement 104 upon a shock.
  • the casing ring 105 After a lateral shock of the watchcase against a surface, the casing ring 105 begins to move versus the case middle 101 and the leaf springs 112a, 112b deflect elastically under normal working condition; if the shock is moderate, the process ends at this state.
  • said leaf spring contacts the corresponding leaflet spring 118.
  • the system is much stiffer and additional stress develops in the portion of the leaf spring 112a near the contact point with the leaflet spring 118. This provides an additional measure of protection, preventing sudden impact of the casing ring with the watch case, at the cost of plastic deformation of the elastic element 116.
  • the cylindrical sidewall 117 of the casing ring 105 is made of thin wall portions over the majority of its perimeter to save weight and thereby reduce its sprung mass.
  • the casing ring 105 however presents outwards thicker protrusions 115 arranged to lie between two neighbouring double leaf spring elements, and, more specifically, between the respective tips 114a and 114b of these neighbouring double leaf spring elements, forming thus abutments for these tips.
  • the protrusions 115 may also house threaded bores (not shown) receiving the screws tightening the baseplate 106 to the casing ring 105.
  • Figure 5 illustrates a third embodiment of a shock absorber device according to the invention and figure 6 shows a variant of the third embodiment of the shock absorber device.
  • FIG. 5 is a schematic transverse sectional view of a watch, said watch comprising a watch case middle 201, and a movement 204.
  • a hand axis 202 is schematically indicated.
  • the movement 204 is surrounded by a casing ring 205 and rests on a baseplate 206, which is fixed to the casing ring 205.
  • the casing ring 205 comprises a cylindrical sidewall 217.
  • the case middle 201 carries a plurality of inwardly extending elastic elements 216, namely four elements in the embodiment shown, distributed over its inner periphery and thus over the perimeter of the casing ring 205.
  • These elastic elements 216 are discrete, spaced apart, workpieces whose central portions 213 are shaped to be firmly fitted into conjugated receiving portions of the inner wall of the middle 201 of the watch case.
  • These elastic elements 216 are configured as double leaf spring elements, having a central root portion 213, two leaves 212a, 212b extending laterally in opposite directions, and two free tip portions 214a, 214b resting on the outer surface of the sidewall 217 of the casing ring 205.
  • the leaves present a curved shape, said shape being inwards concave over the majority of their length, and reversing to an inwards convex tip.
  • the leaves taper from the central root portion to the tips. Since the radius of curvature of the major leaf portion is of the same order of magnitude as the radius of curvature of the sidewall 217 of the casing ring 205, but the radius of curvature of a tip 214a, 214b is significantly smaller, the contact point between a leaf spring and the casing ring remains at almost the same point on the leaf spring, that is to say at the tip, as this leaf spring deflects. Therefore the moment arm of the leaf spring advantageously presents relatively minor changes as the spring is loaded.
  • any lateral movement, in particular any relative rotation, between the root portions 213 of the double leaf spring elements and the case middle 201 is prevented as explained above.
  • the tips 214a, 214b in contact with the casing ring behave as cantilever beams.
  • a number of four such elastic elements 216 is chosen to securely surround the casing ring 205, but that number may vary.
  • This third embodiment thus comprises four discrete elastic elements 216 that can be individually mounted into the watch case middle 201 instead of one single suspension ring 7, 107 as in the first and second embodiments. Due to the simple shape of the elastic elements 216, a variety of materials are suitable for their manufacture, and thus an appropriate elasticity modulus may be selected by those skilled in the art for providing protection against shocks to the movement, with due consideration of the weight of said movement and the targeted drop heights.
  • stiffening means as described above for the first and second embodiments are omitted, however in variants of this third embodiment such stiffening means may also be present.
  • the cylindrical sidewall 217 of the casing ring 205 is made of thin wall portions over the majority of its perimeter to save weight and thereby reduce its sprung mass. But the sidewall 217 of casing ring 205 presents also four thicker portions appearing as outwardly projecting protrusions arranged to lie between two neighbouring elastic double leaf spring elements 216, and, more specifically, between respective tips 214a and 214b of these neighbouring double leaf spring elements 216, forming thus abutments for these tips.
  • Figure 6 shows an exploded view of a variant which is similar in several aspects to the embodiment shown in figure 5 but whose construction has been simplified to a greater extent for the sake of illustration.
  • the shape and function of the individual elastic elements 316 is closely similar to the construction of the elastic elements 216 in figure 5 and will not be described again.
  • only three elastic elements 316 are used instead of four ones. They are fitted by their root portions 313 in conjugated recesses of the case middle 301 and further held in place by means of a sealing ring and the back of the watch case.
  • stiffening means as described above for the first and second embodiments have been omitted in the embodiment of figure 6 , but such stiffening means may also be included in variants.
  • FIG. 7 shows an exploded view of a fourth embodiment of the invention, which is similar in several aspects to the first embodiment but whose construction also has been simplified for illustrative purposes, this embodiment making use of a suspension ring according to the invention in conjunction with known elements of the watchmaking art to provide a shock absorber device for protecting the movement of the watch.
  • the case middle 401 of the watch accommodates a movement surrounded by a thin casing ring 405 presenting a simple cylindrical shape with an opening for the crown stem.
  • a suspension ring 407 is disposed between the case middle 401 and the casing ring 405. That suspension ring 407 comprises a supporting ring 408 carrying a plurality of inwardly projecting elastic elements 416, namely four elements 416 in the embodiment as shown.
  • the structure and function of the individual elastic elements 416 is closely similar to the structure and function of the elastic elements 16 of the first embodiment and therefore will not be described here again.
  • the supporting ring 408 is securely positioned within the case middle 401 by means of outwards facing recesses 409 cooperating with corresponding protrusions of the inner wall of the middle 401.
  • the height of the supporting ring 408 is less than the height of the cantilever springs which it supports, and furthermore that this supporting ring is made continuous without an interruption, since at the level that it occupies it does not interfere with the crown stem.
  • This construction may advantageously use the supporting ring 408 as a sealing ring in conjunction with the bottom of the watch case, as shown by the upper part of figure 7 .
  • a device according to the present invention preferably has the following material properties:
  • the inventors identified titanium as a possible suitable material. This enables the casing ring to be rather lighter than if made from steel. Furthermore, in the casing rings according to the present invention, superfluous material is preferably removed from the ring wherever possible, by rendering the walls as thin as possible and introducing cut outs.
  • the elastic elements 16, 116, 216, 316, 416 are carried by the case middle, either directly or via a supporting ring. This allows a lightweight construction of the casing ring a reduction of its sprung mass, and thereby an easier deceleration of the same containing the movement upon a drop or other severe shock.
  • the design of the shock absorber device according to the present invention makes an optimal use of the available space between the middle and the casing ring.
  • lateral shocks to a watch often tend to impart rotation and angular displacement to the movement.
  • the protrusions 15, 115 present on the casing ring between two neighbouring cantilever spring elements prevent such rotation from occurring in order to prevent any lateral shift and a force being exerted on the crown stem crown as explained above.

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Claims (17)

  1. Stoßauffangvorrichtung für ein Uhrwerk (4, 104, 204) einer Armbanduhr, die geeignet ist, zwischen einem Gehäusemittelteil (1, 101, 201, 301, 401) eines Armbanduhrgehäuses und dem besagten Uhrwerk (4, 104, 204) untergebracht zu werden, wobei die Vorrichtung einen Gehäusering (5, 105, 205, 305, 405) für das besagte Uhrwerk und eine Vielzahl von elastischen Elementen (16, 116, 216, 316, 416), die über den Umfang des besagten Gehäuserings verteilt sind und zwischen dem Gehäusering und dem besagten Gehäusemittelteil (1, 101, 201, 301, 401) des Armbanduhrgehäuses angeordnet sind, umfasst, dadurch gekennzeichnet, dass die besagten elastischen Elemente als Doppelblattfederelemente (12a, 12b, 112a, 112b, 212a, 212b) ausgestaltet sind, wobei die besagten Doppelblattfederelemente einen mittleren Wurzelabschnitt (13, 113, 213, 313), der geeignet ist, fest an dem besagten Mittelteil des Armbanduhrgehäuses befestigt zu sein, und zwei freie Spitzenabschnitte (14a, 14b, 114a, 114b, 214a, 214b), die auf dem besagten Gehäusering ruhen, aufweisen.
  2. Vorrichtung nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die besagten Blätter (12a, 12b, 112a, 112b, 212a, 212b) sich von dem besagten mittleren Wurzelabschnitt (13, 113, 213, 313) seitlich in entgegengesetzten Richtungen erstrecken.
  3. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die besagten Blätter (12a, 12b, 112a, 112b, 212a, 212b) in entgegengesetzter auskragender Position angeordnet sind und Lasten von den besagten freien Spitzen (14a, 14b, 114a, 114b, 214a, 214b) zu dem besagten fest befestigten Wurzelabschnitt (13, 113, 213, 313) übertragen.
  4. Vorrichtung nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die besagten Blätter (12a, 12b, 112a, 112b, 212a, 212b) eine gekrümmte Form aufweisen, wobei die besagte Form über den Großteil ihrer Länge nach innen konkav ist, mit einer nach innen konvexen Spitze (14a, 14b, 114a, 114b, 214a, 214b).
  5. Vorrichtung nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die besagten Blätter (12a, 12b, 112a, 112b, 212a, 212b) sich von dem mittleren Wurzelabschnitt (13, 113, 213, 313) zu den Spitzen (14a, 14b, 114a, 114b, 214a, 214b) verjüngen, wobei die Dicke jedes Blatts mit der Quadratwurzel des Abstands von den Spitzen zunimmt.
  6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der besagte Gehäusering (5, 105, 205, 305, 405) sich nach außen erstreckende Vorsprünge (15, 115) aufweist, die angeordnet sind, um zwischen den Spitzen (14a, 14b, 114a, 114b, 214a, 214b) von zwei benachbarten Doppelblattfederelementen (12a, 12b, 112a, 112b, 212a, 212b) zu liegen.
  7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die besagten Doppelblattfederelemente getrennte, voneinander beabstandete Werkstücke (216, 316) sind, deren mittlere Wurzelabschnitte (213, 313) geformt sind, um in ergänzend geformte Aufnahmeabschnitte der Wand des Mitteleils des Armbanduhrgehäuses eingepasst zu werden.
  8. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die besagten Doppelblattfederelemente (16, 116, 416) an einem Tragring (8, 108, 408), der innerhalb des Gehäusemittelteils des Armbanduhrgehäuses eingepasst ist, nach innen gerichtet angebracht sind.
  9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die besagten Doppelblattfederelemente (16, 116, 416) als ein monolithisches Teil mit dem besagten Tragring (8, 108, 408) hergestellt sind.
  10. Vorrichtung nach einem der Ansprüche 8 oder 9, dadurch gekennzeichnet, dass der besagte Tragring (8, 108, 408) Positionierungsmittel (9, 109, 409) aufweist, die derart ausgestaltet sind, um zu ergänzend geformten Stoppmitteln (10, 110) zu passen, die auf der Innenwand des Mittelteils des Armbanduhrgehäuses vorhanden sind.
  11. Vorrichtung nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, dass der besagte Tragring (8, 108) eine Unterbrechung (21, 121) aufweist, die derart angeordnet ist, um es einer Aufzugskronenwelle der Armbanduhr zu ermöglichen, sie zu durchqueren.
  12. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Vorrichtung Versteifungsmittel (18, 118) umfasst, wobei die besagten Versteifungsmittel derart ausgestaltet sind, um das besagte Blattfedersystem in den letzten Abschnitten einer potenziellen Verlagerung der besagten Blätter (12a, 12b, 112a, 112b, 212a, 212b) bei einem Stoß zu versteifen.
  13. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass die besagten Versteifungsmittel Außenhöcker (18) umfassen, die auf dem Gehäusering (5) derart ausgestaltet sind, um die besagten Blätter (12a, 12b) zum Ende ihrer Verlagerung hin zu berühren, bevor der Gehäusering ein starres Element berührt, das einteilig mit dem Mittelteil ist.
  14. Vorrichtung nach einem der vorhergehenden Ansprüche 8 bis 11 in Verbindung mit Anspruch 12, dadurch gekennzeichnet, dass die besagten Versteifungsmittel blättchenförmige Federn (118) umfassen, wobei eine blättchenförmige Feder (118) zwischen jeder der besagten Blattfedern (112a, 112b) und dem besagten Tragring (108) angeordnet ist und wobei die blättchenförmigen Federn (118) derart ausgestaltet sind, die besagten Blattfedern (112a, 112b) zum Ende der Verlagerung der besagten Blattfedern hin zu berühren, bevor der Gehäusering (105) ein starres Element berührt, das einteilig mit dem Mittelteil ist.
  15. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die besagten elastischen Elemente (16, 116, 216, 316, 416), sofern vorhanden einschließlich des Tragrings (8, 108, 408), aus einem Material hergestellt sind, das aus der Gruppe ausgewählt ist, die aus Maraging-Stählen und amorphen Metallen besteht.
  16. Uhrwerksgehäusering für eine Stoßauffangvorrichtung nach Anspruch 1, wobei der besagte Uhrwerksgehäusering (5, 105, 205) nach außen hervorstehende Vorsprünge (15, 215) aufweist, die geeignet sind, zwischen zwei benachbarten Doppelblattfederelementen zu liegen, dadurch gekennzeichnet, dass der besagte Gehäusering (5) Versteifungsmittel umfasst, wobei die besagten Versteifungsmittel nach außen hervorstehende Höcker (18) umfassen, die auf dem Gehäusering (5) derart ausgestaltet sind, um die besagten Blätter (12a, 12b) zum Ende ihrer Verlagerung hin zu berühren, bevor der Gehäusering ein starres Element berührt, das einteilig mit dem Gehäusemittelteil ist.
  17. Aufhängering (7, 107, 407) für eine Stoßauffangvorrichtung für ein Uhrwerk einer Armbanduhr, wobei der Aufhängering einen Tragring (8, 108, 408), der derart ausgestaltet ist, innerhalb eines Gehäusemittelteils (1, 101, 401) eines Armbanduhrgehäuses eingepasst zu sein, und eine Vielzahl von elastischen Elementen (16, 116, 416), die über den inneren Umfang des besagten Tragrings (8, 108, 408) verteilt sind, umfasst, wobei die besagten elastischen Elemente (16, 116, 416) als Doppelblattfederelemente (12a, 12b, 112a, 112b) ausgestaltet sind, die in auskragender Position nach innen angeordnet sind, dadurch gekennzeichnet, dass die besagten Doppelblattfederelemente einen mittleren Wurzelabschnitt (13, 113, 413), der einteilig mit dem besagten Tragring (8, 108, 408) ist, wobei dieser mittlere Wurzelabschnitt dazu geeignet ist, fest an dem besagten Mittelteil des Uhrgehäuses befestigt zu werden, und zwei freie Spitzenabschnitte, die auf einem Gehäusering (5, 105, 405) des besagten Uhrwerks ruhen, aufweisen.
EP17168128.1A 2017-04-26 2017-04-26 Stossauffangvorrichtung für ein uhrwerk einer armbanduhr Active EP3396473B1 (de)

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JP7020502B2 (ja) * 2020-01-24 2022-02-16 カシオ計算機株式会社 ケースおよび時計
CN116009375A (zh) * 2023-02-27 2023-04-25 广州义资表业有限公司 一种机芯承托支架及手表

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH28928A (de) * 1903-07-09 1904-06-30 C Comte Dispositif-protecteur pour mouvements de montres de poche
CH171429A (fr) 1933-09-20 1934-08-31 Societe Anonyme Fabriqu Aegler Dispositif de montage d'un mouvement d'horlogerie dans sa boîte.
DE1690177U (de) 1954-07-01 1954-12-30 Junghans Geb Ag Uhr, insbesondere armbanduhr mit stosssicherung.
US2752752A (en) * 1955-02-09 1956-07-03 Grover P Simpson Shock and moistureproof watch case
CH346825A (fr) 1958-05-08 1960-05-31 Boites De Montres Huguenin S A Pièce d'horlogerie
FR1512017A (fr) 1967-02-20 1968-02-02 Jean Vallon S A Dispositif de montage d'un mouvement d'horlogerie dans sa boîte
CH972767A4 (de) 1967-07-07 1970-01-30
GB1138119A (en) * 1967-11-01 1968-12-27 Jean Jacques Oltramare Suspending device for a timepiece movement
CH1660167A4 (de) * 1967-11-27 1970-08-31
GB1349703A (en) 1971-03-26 1974-04-10 Suwa Seikosha Kk Watch case
CH620083B (de) 1977-02-16 Ebauches Sa Montre.
NL1035810C2 (nl) 2008-08-11 2010-02-15 Rolandus Jacobus Josef Maria Oostwegel Horloge omvattende een buitenste frame en een een uurwerk omvattend binnenste frame.
CH700383B1 (de) 2009-02-13 2013-03-15 Raphael Fleischhauer Uhrengehäuse.
CH701549B1 (fr) 2009-07-22 2014-09-30 Lvmh Swiss Mft Sa Montre anti-choc.

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