• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method for fixing an ice-cream (18) on a trim element (1) for a timepiece having an opening delimited by a peripheral flank (2), the ice-cream (18) having a complementary shape to that of the opening to close it in a plane defined by a single bearing surface (14), a groove (8) being adjacent to the peripheral flank (2) to define a channel associated with the attachment of the ice ( 18), the bearing surface (14) being adjacent to the groove (8). The method comprises the steps of: a) depositing adhesive material (20) on the covering element (1), filling the groove (8) at least up to the bearing surface (14); ), and b) positioning the window (18) in the aperture by applying pressure thereon to the bearing surface (14) to abut against it without the interposition of adhesive material (20) , and that the latter remains confined in the groove (8) and against the peripheral flank (2).
    公开号:CH714277A2
    申请号:CH01110/18
    申请日:2018-09-18
    公开日:2019-04-30
    发明作者:Parquet Gilles；Herrera Bruno
    申请人:Richemont Int Sa；
    IPC主号:
    专利说明:

    Description
    TECHNICAL FIELD [0001] The present invention relates to a method for fixing an ice on a trim element for a timepiece box having an opening delimited by a peripheral flank closed on itself, the ice having a shape substantially complementary to that of the opening so as to close it in a mean plane whose position is defined by a single bearing surface of the trim element, the trim element having a groove substantially adjacent to the peripheral flank and defining a single channel to be filled with adhesive material to effect the attachment of the ice.
    The invention also relates to a set obtained by the implementation of this method, as well as a timepiece box comprising such a set and a timepiece comprising such a box.
    By fixing in the sense of the present invention, it will include a gluing or brazing of the ice on the trim element.
    STATE OF THE ART [0004] Various methods are known for allowing the fixing of an ice-cream on a cladding element for a timepiece box, in particular on a bezel, a middle part or a bottom of a watch case.
    [0005] The utility model JPS 561 187 U describes and illustrates several examples of gluing an ice on a middle-bezel timepiece according to different embodiments. Thus, for example, this document provides, in the variant embodiment illustrated in FIG. 5, to provide two grooves defining channels for depositing glue on an extended edge towards the center of the middle-bezel. Typically, such grooves can be used as buffers, to retain an excess of glue expelled on either side of the contact regions between the trim element and the ice and to prevent it from spreading essentially inside. of the box. However, the approach presented in this document is slightly different since it plans to voluntarily fill the glue grooves to improve the holding of the ice bonding.
    Of course, such an approach reduces the effectiveness of these grooves as buffers and increases the risk of having an overflow of glue inside the box. Such an overflow is always problematic since it requires at least a cleaning, but can go as far as imposing a disassembly of the ice before being able to clean the inside of the box and stick the ice again, when the box is made of 'a piece, in the form of a middle-case-bezel-bottom. Indeed, in this case, the only access to the inside of the box corresponds to the opening in which the ice is placed. Moreover, it will also be noted that the covering element illustrated in this FIG. 5 has three concentric bearing surfaces, substantially located in the same plane and each of which is secured to the ice with interposition of a layer of glue. Such a structure makes the process of gluing the ice relatively complex since it is particularly necessary to pay attention to the realization of the bearing surfaces and ensure sufficient flatness between them, otherwise it is necessary to provide a surplus of glue to fill flatness defects. In addition, the fact of inserting glue between the bearing surfaces and the ice adds a slight uncertainty as to the quality and reproducibility of the result obtained, especially in terms of the final height of the ice relative to the box, or even of their alignment.
    [0008] Therefore, it is still advantageous for the watchmaker to find solutions that make it possible to improve existing ice-fixation processes, in particular to find improved compromises between the complexity of the manufacture of the dressing element involved. , the holding of the ice after fixing, the ease of implementation of the fixing method, or even the amount of adhesive material required or the appearance of the assembly thus obtained.
    Disclosure of the invention [0009] A main object of the present invention is to propose a process of the type which has just been described, making it possible to offer a good, reproducible control of the result obtained at each implementation, as well as 'a good quality.
    For this purpose, the present invention relates more particularly to a method of the type mentioned above, comprising the steps of: a) depositing adhesive material on the covering element, filling the groove at least until at the level of the bearing surface, and b) position the ice in the opening by applying a slight pressure on it in the direction of the bearing surface, so that it bears directly on the surface of the support, without interposition of adhesive material, and that the adhesive material remains confined substantially in the groove and against the peripheral flank.
    With these characteristics, the method of fixing an ice on the dressing element is perfectly controlled and reproducible. The single bearing surface preferably has a flatness and continuity controlled by the implementation of manufacturing steps of the trim element that remain simple, reliable and reproducible, while the relative positioning of the bearing surface , groove and peripheral flank promotes a flow of adhesive material towards the interface between the ice and the peripheral side rather than towards the inside of the box, during the establishment of the ice. Finally, the fact that the bearing surface is intended to serve directly to support the ice, without interposition of adhesive material, also allows to perfectly control the alignment between the ice and the trim element.
    According to an advantageous embodiment, it is preferable to provide that an adhesive volume between 110 and 150% of the volume of the groove is deposited on the covering element in step a).
    The adhesive material can be deposited manually, in particular using a measuring tool, for example a syringe, or automatically deposited using a robot with a nozzle delivering a precise amount of adhesive material. .
    Furthermore, in the case of adhesive bonding, it can be provided that the adhesive is taken from the group comprising UV type glues.
    According to an alternative embodiment, the cladding element can be placed under at least partial vacuum during the implementation of steps a) and b) of the above method.
    In general, it can be provided that the peripheral flank is substantially straight, and that the groove has an outer wall located directly in the extension of the peripheral flank.
    These additional features can further promote a flow of the adhesive material towards the interface between the ice and the peripheral side rather than towards the inside of the box.
    Furthermore, the groove may preferably have a substantially constant width. Typically, it can be provided that the width of the groove is between 80 and 150% of the width of the bearing surface.
    The depth of the groove measured between its bottom and the bearing surface may be between 0.01 and 0.6 mm, preferably between 0.05 and 0.5 mm. The choice of the depth of the groove makes it possible to control the thickness of adhesive material between the ice and the covering element. This thickness is determined by the physicochemical properties of the adhesive material, mentioned for example in the supplier's specifications. In a traditional collage, the thickness of glue between the ice and the trim element is generally a function of the pressure exerted on the ice during its installation.
    The present invention also relates to a set obtained by the implementation of the method above to ensure the attachment of an ice on a dressing element taken from the group comprising the glasses, the middle and the bottoms of boxes for timepiece.
    According to a preferred embodiment of this assembly, the covering element is a box whose middle and bottom are made in one piece, possibly with a bezel if necessary.
    The present invention also relates to a timepiece box comprising such a set and a timepiece comprising such a box.
    BRIEF DESCRIPTION OF THE DRAWINGS [0023] Other features and advantages of the present invention will become more apparent upon reading the detailed description of a preferred embodiment which follows, with reference to the accompanying drawings given as non-exemplary examples. in which: FIG. 1 is a simplified sectional view of a portion of a cladding element according to a preferred embodiment of the invention; fig. 2 is a simplified sectional view of a part of an assembly comprising the covering element of FIG. 1 and an ice stuck on it, and FIG. 3 shows a view similar to the view of FIG. 2 and illustrating the result of the implementation of the method according to the present invention with an excess of glue.
    Embodiment (s) of the invention [0024] FIG. 1 shows a simplified sectional view of a portion of a cladding element 1 according to a preferred embodiment of the invention. Only the elements necessary for a good understanding of the invention have been illustrated for the sake of clarity and brevity.
    The present invention generally relates to the attachment of an ice on a cladding element which can be carried out essentially by gluing or brazing. For a simplification of the presentation, only the gluing approach will be presented in detail, it being understood that the brazing has only slight differences with the gluing. Thus, glues and solders will be included in the term "adhesive material", which materials have similar viscosities. The ice will present a preliminary step of peripheral metallization in the case of fixing by soldering and the skilled person will not encounter any particular difficulty to implement it. In addition, the process typically comprises a polymerization step in the case of a bonding, for example by UV treatment, or a heat treatment step in the case of soldering, in particular by passing through a strip oven in the case of mass production.
    The dressing element 1 is here a bezel, but in general it can be taken from the group comprising the glasses, the middle and the fund of boxes for timepiece without departing from the scope of the invention. . According to an advantageous variant, the covering element can be a bottom-middle, or even a bottom-middle-bezel.
    In the rest of the text, we will consider by default that the covering element 1 has a generally annular shape. However, it is clear that the skilled person can implement the present invention in relation to any suitable form of the cladding element, whatever the nature, such as oval, cushion or barrel when the covering element is a case, or rectangular or square for a caseband or a telescope.
    The covering element 1 comprises a central opening delimited by a peripheral flank 2 closed on itself. More specifically, the peripheral flank 2 is substantially straight here since it has the shape of a cylinder section.
    The covering element 1 has an extension 4 extending towards its center, facing the central opening, and located at a distance from its upper face 6.
    A groove 8 is formed in the extension 4, in a position adjacent to the peripheral flank 2, so that the groove 8 has an outer wall 10 located in the extension of the peripheral flank 2.
    The location of the groove 8 in the extension 4 releases a lip 12 of generally annular shape, parallel to the peripheral flank 2, and whose free end, oriented towards the central opening of the element d 1, is intended to define a bearing surface 14 during the establishment of an ice.
    The groove 8 here preferably has a substantially constant width. Typically, it can be provided that the width of the groove 8 represents between 80 and 150% of the width of the bearing surface 14.
    In addition, it can be provided that the depth of the groove 8 measured between its bottom 16 and the bearing surface 14 is between 0.01 and 0.6 mm, preferably between 0.05 and 0.5 mm. .
    The skilled person will not encounter any particular difficulty in varying these different parameters according to his own needs, especially to find an acceptable compromise between the glue used, the holding of the ice after gluing, the amount of glue necessary and the appearance of the assembly thus obtained.
    By way of nonlimiting illustration, it is possible for example to use a glue such as Loctite 158 350 (registered trademark, UV glue type) in relation to which it is recommended to provide a maximum gap of 0.5 mm between the two. glued components, a gap of 0.05 mm being preferred.
    To proceed to the bonding of an ice-cream lens 18 (FIGS. 2 and 3) to the covering element 1 according to one embodiment of the process of the present invention, it is first of all possible to deposit glue 20 on it. covering element 1, exclusively by filling the groove 8 at least up to the height of the bearing surface 14.
    The typically high viscosity of this type of adhesive allows to deposit an excess of glue 20 relative to the volume of the groove 8 without the excess glue overflowing outside the groove 8, as shown in FIG. . 1.
    We can typically provide that a volume of glue 20 between 110 and 150% of the volume of the groove 8 is deposited on the trim element 1 prior to the introduction of the ice 18, as shown in FIG. fig. 2.
    It appears from the view of FIG. 2 that when the ice 18 is inserted into the central opening of the covering element 1 and then approaching the bearing surface 14, it exerts pressure on the adhesive 20 pushing it to overflow slightly from the groove 8.
    Because the contact occurs rapidly between the ice 18 and the bearing surface 14, a flow of the adhesive 20 between the ice 18 and the peripheral flank 2 is widely favored, which is illustrated in FIG. 2.
    It is noted that the glue is located exclusively in the groove 8 and between the ice 18 and the peripheral flank 2.
    With these features, it avoids an overflow of the glue 20 towards the inside of the box of the corresponding timepiece. Such a flow can be very disadvantageous, in particular in the case of a timepiece comprising a box made in one piece, that is to say, the bottom, the middle part and the possible bezel are made of one piece. Indeed, in this case, the central opening housing the ice is the only point of access to the inside of the box, which implies, in case of overflow of glue towards the inside of the box, that the ice is removed directly to allow cleaning the glue that has overflowed before starting the ice bonding.
    Moreover, it appears from FIG. 2 that thanks to the direct support of the ice 18 on the bearing surface 14, without interposition of adhesive material, the axial positioning of the glass 18 with reference to the covering element is perfectly controlled and reproducible, which contributes greatly to achieving high perceived quality.
    The precise positioning of the bearing surface 14 during the manufacture of the covering element 1, taking into account the thickness of the ice 18 to be bonded, allows to define a mean plane in which the ice 18 will be precisely positioned.
    Note that if the plane containing the bearing surface 14 has been defined here in a direction perpendicular to the peripheral flank 2, it is also possible to provide an inclination without departing from the scope of the invention. Furthermore, if the bearing surface 14 is here illustrated being substantially contained in a predefined plane, it could also have other shapes without departing from the scope of the present invention, such as for example the shape of a strip constituting a portion of cone shell when the ice to be fixed has a curvature on its inner face. Furthermore, the bearing surface 14 could also have an inclination relative to the plane of the opening of the trim element to fix the ice with a predefined inclination, without departing from the scope of the invention.
    Once the ice 18 in place on the covering element 1, a subsequent treatment step can be applied depending on the glue used to harden it, such as for example irradiation with a UV lamp in the case of a UV type glue. The skilled person will not encounter any particular difficulty to implement this step, including following the recommendations he will get from his glue supplier.
    FIG. 3 shows a view similar to the view of FIG. 2 and illustrates how the glue 20 is likely to overflow in case of excessive dosage during the implementation of the method according to the present invention.
    It appears that an overflow of the glue 20 towards the outside of the box of the corresponding timepiece is widely favored. While such an overflow is of course not desirable, it is much easier to clean than an overflow that would occur inside the box, as mentioned above.
    Thanks to the characteristics which have just been described, it is possible to realize a construction of a trim element of reduced complexity with reference to the prior art and to effect the gluing of an ice so simple, reliable and reproducible.
    The foregoing description attempts to describe a particular embodiment by way of non-limiting illustration and, the invention is not limited to the implementation of certain particular features which have just been described, as for example the form illustrated and described for the covering element and its various parts. Thus, it is of course possible to implement variant forms, without departing from the scope of the invention. By way of non-limiting example, the groove could have a curved bottom or inclined walls without departing from the scope of the invention. Similarly, chamfers may for example be provided in different places without direct impact on the implementation of the invention.
    The skilled person will not encounter any particular difficulty to adapt the content of the present disclosure to his own needs and implement a method of fixing an ice on a trim element, involving a single groove for depositing the adhesive and a single bearing surface for the ice, adjacent to the groove, the latter being itself adjacent to the peripheral flank delimiting the opening of the covering element intended to receive the ice.
    权利要求:
    Claims (9)
    [1]
    1. A method of fixing an ice (18) on a cladding element (1) for a timepiece box, said cladding element (1) having an opening delimited by a peripheral flank (2) closed on itself, said crystal (18) having a shape substantially complementary to that of said opening so as to be able to close it in a mean plane whose position is defined by a single bearing surface (14) of the element d cladding (1), the cladding element (1) having a groove (8) substantially adjacent to said peripheral flank (2) and defining a single channel of said cladding element (1) associated with the attachment of the cladding (1); ice (18), said bearing surface (14) being adjacent to said groove (8), characterized in that it comprises the steps of: a) depositing adhesive material (20) on said dressing element ( 1), exclusively by filling said groove (8) at least at a height of said bearing surface (14), and b) positioning said ice (18) in said opening by applying a slight pressure on it in the direction of said bearing surface (14), so that it bears directly on said bearing surface (14), without interposition of adhesive material (20), and that the adhesive material (20) remains confined substantially in said groove (8) and against said peripheral flank (2).
    [2]
    2. Method according to claim 1, characterized in that a volume of adhesive material (20) between 110 and 150% of the volume of said groove (8) is deposited on the covering element (1) in the step a).
    [3]
    3. Method according to claim 1 or 2, characterized in that the adhesive material (20) is taken from the group comprising UV-type glues.
    [4]
    4. Method according to one of claims 1 to 3, characterized in that the steps a) and b) are performed while said dressing element (1) is placed under at least partial vacuum.
    [5]
    5. Assembly obtained by the implementation of the method according to one of claims 1 to 4 to ensure the attachment of an ice (18) on a trim element (1) taken from the group comprising the glasses, the middle and the funds of timepiece boxes.
    [6]
    6. Assembly obtained by the implementation of the method according to one of claims 1 to 4 to ensure the attachment of an ice (18) on a trim element (1), characterized in that said dressing element (1) is a box whose middle and bottom are made in one piece.
    [7]
    7. The assembly of claim 6, wherein said box comprises a bezel, characterized in that said bezel is also formed integrally with said middle and said bottom.
    [8]
    8. Timepiece box comprising an assembly according to claim 5.
    [9]
    9. Timepiece comprising a box according to one of claims 6 to 8.
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH12612017|2017-10-16|
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