• 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:
    An anchor escapement (1) is disclosed in which an escapement wheel (2) and / or an armature (6) with a multi-point support is resiliently biased against a width (4, 8). An armature (6) and an escapement wheel (2) are also disclosed, each of which is clamped to a shaft (4, 8). The escape wheel (2) and the armature (6) are preferably made of silicon.
    公开号:CH717005A2
    申请号:CH01614/20
    申请日:2020-12-17
    公开日:2021-06-30
    发明作者:Nydegger Jonas；Serex Florian；Felsl Andreas
    申请人:Horage S A；
    IPC主号:
    专利说明:

    The invention relates to an armature escapement of a clockwork according to the preamble of claim 1 and an armature and an escapement wheel for such an armature escapement.
    A large number of publications describing the structure of such anchor escapements are known. US Pat. No. 1,044,054 A, US Pat. No. 3,628,327 A, US Pat. No. 3,803,830 A, US Pat. No. 3,335,562 A and EP 2 336 832 A2 are mentioned as examples.
    Accordingly, such lever escapements have an escape wheel that drives an armature, which in turn drives a double role of a balance wheel. This is the clock and controls the escape wheel and thus the rate of the clock via the armature.
    End portions of the armature each carry a pallet which can be brought into driving engagement with teeth of the escape wheel. The latter and the armature are each mounted on a shaft on which the armature or the escape wheel is placed. Often the escape wheel and the armature are made of steel.
    It is also known to manufacture a spiral of the balance wheel from silicon or a silicon alloy. Such a spiral is described, for example, in EP 1 445 670 A1. The use of this advantageous material for the escape wheel and / or the armature has only slowly gained acceptance in the traditional watch industry, as it becomes one when the armature or the escape wheel is pressed with the associated shaft (also called axis) or during operation by impacts or vibrations Break came.
    In contrast, the invention is based on the object of creating an armature escapement, an armature and an escapement wheel in which the use of silicon or silicon alloys as the base material is also possible.
    This object is achieved by an anchor escapement with the features of claim 1 or an anchor according to claim 14 or an escape wheel according to claim 15.
    [0008] Advantageous further developments of the invention are the subject matter of the subclaims.
    The anchor escapement according to the invention has an anchor and an escape wheel which are in operative engagement with one another. According to the invention, the armature and / or the escape wheel are each designed with a receptacle into which the associated shaft (armature shaft, escape wheel shaft) is inserted or with which the escape wheel or the armature are placed on the shaft. According to the invention, this receptacle is designed as a multi-point support, preferably as a two-point support, so that an exact relative positioning of the respective shaft with reference to the active surfaces of the armature or the escape wheel is ensured. The shaft is pretensioned by a pretensioning device in the direction of the abutment on the multi-point support or the armature or the escape wheel is tensioned with the shaft.
    The armature and / or the escape wheel are preferably made of silicon or a silicon alloy or ceramic. Of course, other materials can also be used.
    By this multi-point support, an exact prepositioning of these components is guaranteed during assembly. In a later operation, the shaft can then be finally fixed in relation to the armature or the escape wheel.
    In a particularly preferred embodiment of the invention, the final relative fixation between the shaft and armature / escape wheel takes place by gluing.
    The biasing device is formed in one embodiment of the invention by at least one spring leg which is integrally formed on the armature or on the escape wheel.
    In a preferred embodiment, two spring legs extending approximately tangentially to the shaft are provided.
    It is particularly preferred if each spring leg at its end portion has a holding portion extending along a peripheral portion, which is arranged at a distance from the multi-point support and whose geometry is chosen so that the shaft and armature / escape wheel reliably in the direction of the multi-point support are tense.
    According to the invention, it is preferred if the prestress applied over the spring leg or legs is in the range between 0.05 N to 0.2 N, preferably between 0.07 N to 0.10 N.
    The positional positioning between the shaft and armature or escape wheel can be further improved if a spacer (safety bulge) is arranged opposite the multi-point support. This preferably dips approximately into an area between the two spring legs.
    The manufacture of the armature and / or the escape wheel is particularly simple if the spring legs are cut free from the base material of the armature or the escape wheel. This free cutting can be done by etching, cutting, primary shaping, punching, a generative process or the like.
    The distribution of the adhesive for fixing the shaft on the armature or on the escape wheel is particularly simple if an adhesive channel is implemented in the area of the shaft.
    The efficiency of the escapement can be positively influenced by the engagement surfaces of the escapement wheel teeth and drive surfaces of a pallet of the armature being rounded.
    The radius of this rounding is preferably in the range from 0.2 to 2 mm.
    In one embodiment of the invention it is provided that the pivoting movement of the armature is limited by stops on the pallet side. As a result of this development, additional stops on an anchor bridge can be dispensed with.
    In a particularly simple embodiment, the shaft is made of steel.
    Preferred exemplary embodiments of the invention are explained in more detail below with reference to schematic drawings. The figures show: FIG. 1 a three-dimensional oblique top view of an anchor escapement according to the invention; FIG. 2 shows an individual illustration of an escapement wheel according to the invention for the anchor escapement according to FIG. 1; FIG. 3 shows a detailed view of a receptacle of the escape wheel according to FIG. 2; FIG. 4 shows a section perpendicular to the plane of the drawing in FIG. 3; FIG. 5 shows an individual representation of an anchor according to the invention of the anchor escapement according to FIG. 1 and FIG. 6 shows a fork of the anchor according to FIG. 5.
    Figure 1 shows a three-dimensional view from below of an anchor escapement 1 according to the invention, the basic structure of which is known from the prior art, so that only the components required to understand the invention are explained below. In high-quality watches, the lever escapement is the assembly that creates the connection between the gear train and the balance with the hairspring.
    The anchor escapement 1 has an escape wheel 2, the escape wheel shaft 4 of which is rotatably mounted. The escape wheel 2 drives an armature 6 which is connected to an armature shaft 8. This passes through an anchor base 10, at the end sections of which pallets 12, 14 are inserted or formed, which can be brought into engagement with escape wheel teeth 16 alternately.
    The armature shaft 8 is rotatably mounted on an armature bridge 18 and a plate (not shown), with armature stops 20, 22 being provided on the armature bridge 18 in conventional clockworks, which limit the pivoting angle of the armature 6. In Figure 1, these anchor stops 20, 22 are provided with dash-dotted reference lines, since in the inventive concept such stops can be integrated into the pallets 12, 14. This is discussed in more detail below. Such anchor stops 20, 22 are also referred to as a limit.
    Also shown in FIG. 1 is a double roller (double disk) 26 which is controlled by the balance spring and which is firmly connected to a balance shaft 28. The double roller 26 has a spiral-side lever roller 30 and an overlying safety roller 32. An ellipse 34 made of ruby, silicon or ceramic is formed on the lever roller 30, which can be brought into operative engagement with an anchor fork 36 when the double roller 26 is rotated, so that accordingly the angular amplitude of the double disk 26 of the armature 6 is pivoted about the armature shaft 8.
    In the illustrated embodiment, the escapement wheel shaft 4, the armature shaft 8 and the balance shaft 28 are arranged on a straight line - one speaks of an "escapement in a straight arrangement".
    The escapement wheel 2 shown in individual representation in FIG. 2 consists, like the armature 6, in the exemplary embodiment according to the invention made of silicon or a silicon alloy. Of course, other materials can also be used. The escape wheel 2 has a ring gear 38 on which the escape wheel teeth 16 are formed. Escape wheel legs 40, 42, 44, 46 extend inwardly from toothed ring 38, with the somewhat thicker legs 40, 42 being arranged in the radial direction and entering a hub 48 in which a seat 50 for the escape wheel shaft 8 is formed in the center. The legs 44, 46, which are made somewhat thinner, run into the hub 48 at an angle to the tangential.
    As will be explained in more detail below, the receptacle 50 is designed to be resilient, the armature shaft 8 being braced with a two-point support 56 via spring legs 52, 54.
    The escapement wheel teeth 16 have, in a manner known per se, an end face, also referred to as lifting surface 58, and a resting surface 60 extending approximately in the radial direction, to which corresponding surfaces on the pallets 12, 14 of the armature 6 are assigned (see FIG. 5).
    According to the invention, the lifting surfaces 58 are rounded, the radius R being between 0.2 mm and 2 mm. Last but not least, this diameter also depends on the dimensions of the anchor escapement 1 and the torque acting.
    FIG. 3 shows the area of the hub 48 of the escape wheel 2 in the position placed on the escape wheel shaft 8. As explained, the spring legs 52, 54 are cut free from the base body of the escape wheel 2 or the hub 48, for example by etching, punching or cutting. At the end sections of the spring legs 52, 54, which extend approximately in the radial direction, rounded holding sections 62, 64 are provided corresponding to the diameter of the escape wheel shaft 8 and encompass a circumferential section of the armature shaft 8.
    In the illustration according to FIG. 3, the two spring legs 52, 54 are shown in a relaxed position which they assume when the escape wheel shaft 8 is not inserted. As a result of the placement, these holding sections are deflected outwards, as indicated by dashed lines in FIG. According to the invention, the pretensioning force acting here is in the range from 0.05 N to 0.2 N, preferably in the range between 0.07 N to 0.10 N. This pretensioning makes the escape wheel 2 with a multi-point support, specifically a two-point support with contact surfaces 66 , 68 of the receptacle 50 of the hub 48, biased against the escape wheel shaft 8.
    According to the illustration in FIG. 3, these bearing surfaces 66, 68 bear against the outer circumference of the escape wheel shaft 8. In the area between these bearing surfaces 66, 68 a cutout 70 is provided, along which the receptacle 50 is spaced from the escape wheel shaft 8. Opposite to this cutout 70, a safety bulge 72 acting as a spacer is provided on the circumferential wall of the receptacle 50, which protrudes in the radial direction into the area between the end sections of the holding sections 62, 64. This safety bulge 72 limits the radial offset of the escape wheel shaft 8 with respect to the bearing surfaces 66, 68 and thus simplifies the assembly and an excessive load on the spring legs 52, 54.
    After this resilient pre-assembly of the escape wheel 2 on the escape wheel shaft 8, according to the invention, the final fixation takes place by means of a gluing process.
    According to the sectional view in Figure 4, the sectional plane of which runs through a center plane of the escape wheel shaft 8, an adhesive layer 74 is applied in the contact area of the holding sections 62, 64 and the bearing surfaces 66, 68 on the escape wheel shaft 8, whereby to simplify the adhesive distribution an annular shoulder 76 of the escape wheel shaft 8, on which the escape wheel 2 rests with the hub 48, an adhesive channel 79 designed as a recess is formed, into which excess adhesive can enter. This ensures a sufficient application of adhesive and optimal adhesive distribution along the contact surfaces between the escape wheel shaft 8 and the receptacle 48.
    This connection technology with a resiliently pre-assembled escape wheel 2 on the escape wheel shaft 4 and subsequent gluing surprisingly allows a tension-free and at the same time firm connection of the components and the use of silicon for the escape wheel 2 and in a corresponding manner for the armature 6 and possibly also for further components of a clockwork with axles or shafts.
    FIG. 5 shows an individual representation of the armature 6. As stated above, a receptacle 78 for the armature shaft 8 (see FIG. 1) is formed approximately in the center of the armature base 10 extending transversely to the armature fork 36. The structure of this receptacle 78 corresponds to that of the receptacle 50 of the escape wheel 2, so that, for the sake of simplicity, the same reference numerals are used for the components corresponding to one another in FIG. 5 and FIG. Accordingly, the receptacle 78 is also designed as a two-point receptacle with two receiving surfaces 66, 68, which are pretensioned against the armature shaft 8 via the spring legs 52, 54, the holding sections 62, 64 resting on circumferential sections of the armature shaft 8, not shown, and these with the aforementioned pretensioning force Pre-tension in the range between 0.05 N and 0.2 N. The gluing then takes place in the same way as with the escape wheel 2, so that further explanations in this regard are unnecessary.
    In the area of the pallets 12, 14 lifting surfaces 80, 82 and resting surfaces 84, 86 are formed according to the geometry of the escape wheel 2, which come into operative engagement with the escape wheel teeth 16 during the oscillation of the double roller 26 and the associated pivoting of the armature 6 . As stated above, the radius R of the concave or convex rounded lifting surfaces 80, 82 is approximately 0.2 to 2.0 mm.
    Another difference to conventional solutions is that the stops / limits mentioned at the beginning are integrated into the pallet structure of the armature 6. In the illustrated embodiment, limiting projections 88, 90 are formed in the area of the pallets 12, 14, which run onto an escapement wheel tooth 16 in the end area of the armature pivoting so that the pivoting movement is limited.
    FIG. 6 shows an enlarged, three-dimensional representation of the anchor fork 36 of the anchor 6. Accordingly, it is designed in two stages with a bottom wall 92 visible from the underside in FIG. In the illustration according to FIG. 6 above the bottom wall 92, a fork pocket 100 forming fork legs 96, 98 is provided, which is open at the top (view according to FIG. 6) and is closed at the bottom by the bottom wall 92. The end faces 102, 104 are also rounded, so that the ellipse 34 can enter or exit the fork 36, more precisely its fork pocket 100, in an optimal manner.
    An anchor escapement is disclosed in which an escapement wheel and / or an armature with a multi-point support is resiliently biased against a shaft. Furthermore, an armature and an escape wheel are disclosed, each of which is clamped to a shaft. The escape wheel and the armature are preferably made of silicon.
    List of reference symbols:
    1 lever escapement 2 escapement wheel 4 escapement wheel shaft 6 armature 8 armature shaft 10 armature base 12 pallet 14 pallet 16 escapement wheel tooth 18 armature bridge 20 armature stop 22 armature stop 26 double roller 28 balance shaft 30 lever disk 32 safety disk 34 ellipse 36 armature fork 38 gear rim 40 legs 42 legs 44 legs 46 legs 48 Hub 50 Retainer 52 Spring leg 54 Spring leg 56 Two-point support 58 Lifting surface 60 Resting surface 62 Holding section 64 Holding section 66 Supporting surface 68 Supporting surface 70 Free cut 72 Safety bulge 74 Adhesive layer 76 Ring end face 78 Support 79 Glue channel 80 Lifting surface 82 Lifting surface 84 Resting surface 86 Resting surface 88 Limiting projection 90 Boundary wall projection 94 Front surface 92 Fork legs 98 Fork legs 100 Fork pocket 102 Front surface 104 Front surface
    权利要求:
    Claims (15)
    [1]
    1. Anchor escapement with an armature (6) and an escapement wheel (2), which are in operative connection with one another and which each have a shaft, which via a pretensioning device with a multi-point support of a receptacle (50, 78) of the armature (6) and / or the escape wheel (2) is clamped.
    [2]
    2. Armature escapement according to claim 1, wherein the armature (6) and / or the escape wheel (2) is made of silicon or a silicon alloy.
    [3]
    3. Armature escapement according to claim 1 or 2, wherein the shaft is glued to the armature (6) and / or the escapement wheel (2).
    [4]
    4. Armature escapement according to one of the preceding claims, wherein the pretensioning device has at least one spring leg (52, 54) formed on the armature (6) or on the escape wheel (2).
    [5]
    5. Anchor escapement according to claim 4, wherein two spring legs (52, 54) arranged approximately tangentially to the shaft are provided.
    [6]
    6. Anchor escapement according to claim 4 or 5, wherein the spring leg (52, 54) has a holding portion (62, 64) at its end portion, which in the assembled state rests in sections on the outer circumference of the shaft.
    [7]
    7. Anchor escapement according to one of claims 4 to 6, wherein the prestressing force applied via the at least one spring leg (52, 54) is in the range between 0.05 N to 0.20 N, preferably in the range between 0.07 N to 0.10 N, lies.
    [8]
    8. Anchor escapement according to one of the preceding claims, wherein the receptacle (50, 78) has a safety bulge (72) in the region of the at least one spring leg (52, 54).
    [9]
    9. Anchor escapement according to one of the claims 4 to 8, wherein the spring legs (52, 54) are circumferentially cut free.
    [10]
    10. An anchor escapement according to one of the preceding claims with an adhesive channel (79) formed on the shaft adjacent to the receptacle (50, 78).
    [11]
    11. Anchor escapement according to one of the preceding claims, wherein engagement surfaces of escape wheel teeth (16) and / or engagement surfaces of the armature (6) are rounded, the radius of curvature being between 0.2 mm and 2 mm.
    [12]
    12. Anchor escapement according to one of the preceding claims, wherein on pallets (12, 14) of the armature (6) limiting projections (88, 90) for limiting the pivoting movement of the armature (6) are formed.
    [13]
    13. Anchor escapement according to one of the preceding claims, wherein the shafts are made of steel or a steel alloy.
    [14]
    14. An anchor for an anchor escapement according to one of the preceding claims, which is connected to an armature shaft (8).
    [15]
    15. Escapement wheel for an armature escapement according to one of the preceding claims, which is connected to an escapement wheel shaft (4).
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    同族专利:
    公开号 | 公开日
    DE102019134968A1|2021-06-24|
    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
    DE102019134968.0A|DE102019134968A1|2019-12-18|2019-12-18|Lever escapement, anchor and escape wheel|
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