• 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 clock display mechanism provided with an indicator (42) which draws a complex trajectory, as well as a watch movement and a timepiece which comprise this display mechanism. The indicator (42) is used to display a time value. A control mechanism (50) modifies its speed of travel in relation to the time flow while moving it closer and further away from the center (C1) of a display region (15). The displacement of the indicator is thus carried out along portions of curves connected by points of inflection (P1 to P8).
    公开号:CH708264B1
    申请号:CH00955/14
    申请日:2014-06-24
    公开日:2018-11-15
    发明作者:Mori Yuichi
    申请人:Seiko Instr Inc；
    IPC主号:
    专利说明:

    Description
    BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a display clock mechanism, as well as to a watch movement and to a timepiece comprising the display mechanism. . 2. Description of the Related Art [0002] A mechanical timepiece such as a wristwatch also has a decorative function in addition to a time display function. Therefore, in the related art, there is known a mechanical watch which includes a special display mechanism for improving the design of the display of time or day information with indicator hands. like an hour hand, a minute hand, a second hand, and a day hand, for example.
    JP-A-2005-17 295 patent (patent literature 1) discloses for example an analog display device (display mechanism) which is attached to an axis of rotation, has an indicator for a value to display and follows a previously selected route. The analog display device has a controller for the indicator that is configured such that a free end of the indicator tracks the previously selected route in response to rotation about the axis of rotation.
    The controller for the indicator comprises a longitudinal groove which slides relative to two pins arranged in a guide arm fixed to the axis of rotation and a horizontal groove which is guided by a pin disposed in an arm connected to the arm guidance.
    The trajectory of needles on a dial is defined by the speed of rotation of the arm and the shape of each groove relative to the guide arm.
    Specifically, the guide arm rotates once per hour and is attached to the hour hand of the watch. The arm is moved by the hour hand and rotates twice an hour. In addition, in a state where the plurality of pins are inserted into the guide arm and the arm, the needles are mounted on the guide arm and the arm, a first groove being positioned by the pin of the guide arm, the pin arm being disposed within a second groove. In this way, the needle rotates once per hour using the first groove to guide the needle. Then, a tip of the needle rotates in a circumferential direction and is moved in a radial direction by the pin inserted into the arm, thus moving on an elliptical shaped path.
    However, in the related art, the first groove has a linear shape, the needle being configured to rotate while the spindle of the arm causes the needle to move in the radial direction in a predetermined cycle. Therefore, the trajectory of an indicator of the needle is limited to a shape symmetrical to a center of rotation of the guide arm. Therefore, a problem remains in that the drawing of a complicated trajectory with an excellent design is necessary. In addition, and in general, when the trajectory of the needle indicator is complicated, the display mechanism tends to be complicated as well. SUMMARY OF THE INVENTION [0008] Therefore, an object of the present invention is to provide a watchmaking display mechanism that can draw a complicated trajectory of an indicator by using a simple structure and which can improve the design, as well as a watch movement and a timepiece including such a display mechanism.
    To obtain the object described above, there is provided a display mechanism comprising an indicator which is used to display the flow of time; and a control mechanism that changes the speed of movement of the indicator in response to the passage of time and which moves the indicator in a direction of approaching or moving away from the center of a display unit . The control mechanism moves the indicator so that a trajectory drawn when the indicator is moved in the direction of approaching the center of the display unit is in continuity with a trajectory drawn when the indicator is moved in the sense of distance from the center of the display unit.
    In addition, the control mechanism comprises a cam which rotates about a first axis and a cam follower assembly which rotates in a direction opposite to the direction of rotation of the cam. The cam follower assembly includes a lever having at one end a cam follower in contact with the cam, which lever rotates about the cam while being pivotally displaced in response to rotation of the follower assembly. cam; and an indicator needle having at one end thereof the indicator and the second end thereof being supported so as to be pivotally displaced about a second axis positioned outside the cam in a radial direction, which needle indicator rotates around the cam in response to rotation of the cam follower assembly. The second end of the lever and the second end of the indicator needle are mutually connected by a power transmission module.
    According to the present invention, the control mechanism is provided so as to change the speed of movement of the indicator and to move the indicator in the direction of the approximation or the distance from the center of the unit. display. Therefore, it is possible to draw a complicated trajectory of the indicator using a simple structure. In addition, the control mechanism moves the indicator so that the trajectory drawn when the indicator is moved in the direction of approaching the center of the display unit is in continuity with the trajectory drawn when the indicator is moved. in the sense of moving away from the center of the display unit. Therefore, it is possible to draw a curved trajectory of the indicator. This allows the indicator to draw a more complicated path. Therefore, it is possible to improve the design of the display mechanism.
    Similarly, the control mechanism is configured so that the cam rotates about the first axis and that the cam follower assembly rotates in the opposite direction to the direction of rotation of the cam. Therefore, it is possible to adopt the simple structure comprising a reduced number of components. Further, the cam follower assembly includes the lever in which the cam follower in contact with the cam is formed in a first end and rotates about the cam in a circumferential direction while being pivotally displaced in response to rotation. of the cam follower assembly. Therefore, it is possible to arbitrarily adjust a lever swing amount of motion by changing the shape of the outer peripheral surface of the cam. In addition, it is possible to arbitrarily adjust the pivoting movement speed of the lever by changing the relative speed of movement of the cam follower relative to the cam. In addition, the indicator needle is supported to be pivotally displaced about the second axis, the second end of the lever and the second end of the indicator needle being mutually connected by the power transmission module. Therefore, the indicator needle is rotatable about the cam in the circumferential direction while being pivotally displaced about the second axis in response to the pivoting range of motion and the pivoting movement speed of the lever that are previously set. In this way, it is possible to determine a desired trajectory of the indicator pointer using the shape of the outer peripheral surface of the cam and the relative speed of movement of the cam follower relative to the cam. Therefore, it is possible to draw the complicated trajectory of the indicator using the simple structure and it is thus possible to improve the design of the display mechanism.
    In addition, the power transmission module may be formed to have an indicator needle wheel formed in the second end of the indicator needle and a lever wheel formed in the second end of the lever.
    Thus, the power transmission module is formed to have the indicator needle wheel and the lever wheel. Therefore, it is possible to draw the more complicated trajectory of the indicator needle by changing the ratio between the number of indicator needle teeth and the number of lever wheel teeth, which mesh with each other, and It is possible to improve the design of the display mechanism. In particular, it is possible to increase the pivotal movement amplitude of the indicator needle and to increase the pivoting movement amplitude of the indicator by increasing the ratio of the number of teeth of the lever wheel to it is greater than the ratio of the number of teeth of the pointer wheel. It is possible to decrease the amplitude of pivotal movement of the indicator needle and to decrease the amplitude of pivotal movement of the indicator by decreasing the ratio of the number of teeth of the lever wheel to be less than to the ratio of the number of teeth of the pointer wheel. In this way, it is possible to determine the desired trajectory of the indicator pointer by changing the ratio between the number of teeth of the indicator needle wheel and the number of teeth of the lever wheel in addition to the shape of the outer peripheral surface of the cam and the relative speed of movement of the cam follower relative to the cam. Therefore, it is possible to draw the complicated trajectory of the indicator using the simple structure and it is thus possible to improve the design of the display mechanism.
    In addition, the cam may comprise a cam surface whose radius is formed to increase in the circumferential direction of the cam.
    Thus, the cam comprises the cam surface whose radius is formed to increase in the circumferential direction of the cam. Therefore, it is possible to adjust the pivoting movement amplitude of the lever by changing the shape of the cam surface as the cam follower of the lever rotates about the cam when the cam follower of the lever is in contact with the cam. the surface of the cam. Therefore, it is possible to easily change the curvature of the trajectory of the indicator which is drawn in a curved shape by changing the curvature of the surface of the cam, for example. Therefore, it is possible to draw the desired trajectory easily.
    In addition, the cam may comprise a groove which is formed such that the distance from the first axis in the radial direction increases in the circumferential direction of the cam, the cam follower of the lever being formed to have a convex portion. which is movable along the groove.
    Thus, it is possible to simply form the cam with a reduced cost. In addition, the cam follower of the lever is formed so that the convex portion can be moved into the groove. Therefore, the cam follower can be moved into the groove by simply placing the convex portion of the lever within the groove. Therefore, it is, for example, not necessary to set up a deflection element to deflect the cam follower against the cam so that the cam follower comes into contact with the cam. Therefore, it is possible to set up the display mechanism so as to simplify the structure and thus, it is possible to reduce the cost.
    In addition, the cam and the cam follower assembly are rotatable about the first axis in mutually opposite directions, the cam rotating faster than the cam follower assembly.
    Thus, the cam and the cam follower assembly rotate about the first axis in mutually opposite directions, the cam rotating faster than the cam follower assembly. As a result, the cam can rotate several times while the cam follower assembly rotates once. In this way, the cam follower of the lever can repeatedly pass over the surface of the cam and a stepped surface which connects the position where a radius from the first axis is minimized on the surface of the cam and the position where the radius is maximized and can be moved reciprocally several times in the direction of approaching or moving away from the first axis, in response to passing over the surface of the cam and the stepped surface. In this case, the lever is pivotally displaced in response to the reciprocal movement of the cam follower, the pointer needle being pivotally displaced via the power transmission module. Therefore, the indicator can be moved reciprocally several times in the direction of approaching or moving away from the first axis, in response to the number of times that the cam follower of the lever passes over the surface of the cam and the surface stepped. In this way, in response to a rotational speed ratio between the cam and the cam follower assembly, it is possible to modify the number of times the indicator is moved reciprocally in the direction of the reconciliation or the distance of the first axis. Therefore, it is possible to draw the complicated trajectory of the indicator using the simple structure and it is therefore possible to improve the design of the display mechanism.
    In addition, the speed of rotation of the cam may be three times the rotational speed of the cam follower assembly.
    Thus, the cam follower assembly rotates once in the opposite direction while the cam rotates three times. As a result, the cam follower of the lever can pass four times over the stepped surface that connects the location where the radius of the first axis is minimized on the surface of the cam and the location where the radius is maximized when the cam follower assembly turn once clockwise. Therefore, the indicator can rotate while being moved four times in the direction of the approaching or moving away from the first axis. Therefore, it is for example possible to draw the complicated trajectory in petal shape, centered on the first axis.
    In addition, a watch movement according to the present invention comprises the display mechanism described above.
    In addition, a timepiece according to the present invention comprises the watch movement described above.
    According to the present invention, by providing the display mechanism described above, it is possible to obtain the watch movement and the timepiece of excellent design and to be able to draw the complicated trajectory of the indicator using the simple structure.
    According to the present invention, the control mechanism is provided so as to change the speed of movement of the indicator and to move the indicator in the direction of a rapprochement or a distance from the center of the unit. display. Therefore, it is possible to draw the complicated trajectory of the indicator using the simple structure. In addition, the control mechanism moves the indicator so that the trajectory drawn when the indicator is moved in the direction of a rapprochement of the center of the display unit is in continuity with the trajectory drawn when the indicator is moved in the sense of moving away from the center of the display unit. Therefore, it is possible to draw the curved trajectory of the indicator. In this way, it is possible to draw the more complicated trajectory of the indicator and it is thus possible to improve the design of the display mechanism.
    Brief description of the drawings [0027]
    Fig. 1 is an external view of a timepiece according to one embodiment.
    Fig. 2 is an explanatory view when a movement is seen from behind.
    Fig. 3 is a cross-sectional view of the movement illustrated in FIG. 2.
    Fig. 4 is an explanatory view of a display mechanism when the display mechanism indicates zero minutes.
    Fig. 5 is an explanatory view of the display mechanism when the display mechanism indicates that three minutes have elapsed.
    Fig. 6 is an explanatory view of the display mechanism when the display mechanism indicates that six minutes have elapsed.
    Fig. 7 is an explanatory view of the display mechanism when the display mechanism indicates that nine minutes have elapsed.
    Fig. 8 is an explanatory view of the display mechanism when the display mechanism indicates that 12 minutes have elapsed.
    Fig. 9 is an explanatory view of the display mechanism when the display mechanism indicates that 15 minutes have elapsed.
    Fig. 10 is an explanatory view of the display mechanism immediately after the display mechanism has indicated that 15 minutes have elapsed.
    Fig. 11 is an explanatory view of a display mechanism according to a first example of modification of the embodiment.
    Fig. 12 is an explanatory view of a display mechanism according to a second example of modification of the embodiment.
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0028] An embodiment of the present invention will be described hereinafter with reference to the drawings.
    In the following description, a mechanical wristwatch according to the embodiment (corresponding to a "timepiece" described in the claims) and a movement integrated into the wristwatch (corresponding to a "clockwork movement"). Described in the claims) will first be described, after which a display mechanism will be described in detail. (Timepiece) [0030] In general, a mechanical body comprising a driving portion of the watch is called "movement". The state of the finished product by setting a dial and hands to movement and placing the movement in the case of a watch is called the "complete set" of the watch. Between the two faces of a main plate configuring a frame of the watch, the face with glass of the case of the watch, that is to say the face endowed with the dial is called "rear face" of the movement. In addition, between the two faces of the main plate, the face having a rear cover of the case of the watch, that is to say the face opposite the dial, is called "front face" of the movement.
    FIG. 1 is an exterior view of a watch 1 according to an embodiment of the present invention.
    As illustrated in FIG. 1, the complete set of the watch 1 of the present embodiment comprises a movement 10, a dial 11 with time information, a hours hand indicating the hours, a seconds hand 6 indicating the seconds, an indicator hand 41 having an indicator 42 which functions as a minute hand and indicates the minutes, within a watch case 3 configured to have a case back cover (not shown) and a glass 2. The watch 1 of the present embodiment is a mechanical watch 1 comprising a special display mechanism 40 to improve the design, especially when displaying information on the minutes. In fig. 1, a trajectory of the indicator 42 is illustrated by a dotted line with two dots.
    A winding stem 8 is rotatably integrated in a guide cavity (not shown) of a main plate 20. For example, the winding stem 8 is a clock component used for the correction of the date or correction of the time display (display of hours and minutes). A ring 9 positioned laterally in the case of the watch 3 is fixed to the end of the winding stem 8.
    The winding stem 8 is rotatably supported by the guide cavity and can be actuated so as to be output in two stages, for example, in the extension direction of the winding stem 8. In this case, the winding stem 8 is positioned in the direction of extension by a switching device (not shown) which is disposed on the rear face of the main plate 20, as a control lever, a walkman and a sliding spring.
    In the following description, the center of rotation of the hour hand 5 and the seconds hand 6 is called the first axis C1, the orthogonal direction in the direction of the first axis C1 is called the radial direction and the rotating direction around the first axis C1 is called circumferential direction. In addition, the clockwise upstream side is referred to as "the circumferential side" and the downstream side is referred to as the "other side in the circumferential direction". In addition, when seen from the axial direction, the axis which passes through the first axis C1 and is extended by the winding stem 8 is called "X axis", the right side of FIG. 1 is called "+ X side" and the left side is called "-X axis". In addition, the axis that passes through the first axis C1 and is orthogonal to the X direction is called "Y axis", the upper side of FIG. 1 is called "Y side +" and the bottom side is called "Y side". Subsequently, the description will be performed using an orthogonal X-Y coordinate system if necessary.
    For example, the dial 11 is configured to have a generally hexagonal shape and a scale 12 providing information on the hours and seconds is disposed in each corner of the main surface of the dial 11.
    The radially inner portion relative to the graduation 12 in the main surface of the dial 11 serves as a display region 15 (corresponding to a "display unit" as described in the claims) which displays an index 13 configured to include the numbers "15", "30", "45" and "60" indicating the minute information. The minute information between zero minutes and 60 minutes is displayed in the display region 15, which corresponds to the index 13.
    The indexes 13 of "15", "30", "45" and "60" are juxtaposed sequentially clockwise in the circumferential direction in the display region 15. In the present embodiment, when it is seen from the axial direction, the index 13 of "15" is disposed on the + X axis, in a position remote from the first axis C1 by a predetermined distance. Then, "30", "45" and "60" are sequentially arranged at positions remote from the first axis C1 at predetermined distances so as to maintain a 90 degree pitch about the first axis C1.
    The display mechanism 40 comprising the cursor 42 used for the indication of the flow of time and a control mechanism 50 which changes the speed of movement of the indicator 42 according to the flow of time is disposed in the display region 15. The indicator 42 is configured to be moved in the display region 15 by the control mechanism 50 and to indicate the respective indexes 13 of "15", "30", "45" and "60" which indicates the minute information. The display mechanism 40 comprising the indicator 42 and the control mechanism 50 will be described in detail later.
    The display region 15 of the dial 11 has an opening for the window of the days 11a which indicates a number representing the date. In this way, it is possible to confirm the date in addition to the time using the watch 1.
    FIG. 2 is an explanatory view when the movement 10 illustrated in FIG. 1 is seen from the back (side 11 of the dial). Fig. 2 illustrates the movement 10 by transmitting the dial 11 so as to facilitate understanding. In addition, the number displayed on the dial 11, the trajectory of the indicator 42, the window of the days 11a formed on the dial 11 and a platen 29 for holding the date indicator are illustrated by a long two-point dash. . In addition, the hour hand 5 and the second hand 6 (for both, see Fig. 1) are omitted in the illustration.
    FIG. 3 is a cross-sectional view of the movement illustrated in FIG. 2. FIG. 3 is the cross-sectional view taken along the axis A-A1 of FIG. 2, which illustrates the face 20 of the main plate from an inner surface of the dial 11 when the inner surface of the face 20 of the main plate of the dial 11 is considered a limit, and the cross-sectional view taken along the axis A-A2 of FIG. 2, which illustrates the opposite face of the main plate 20 from the inner surface of the dial 11.
    As illustrated in FIG. 2, the movement 10 has the main plate 20 which represents a base of the movement 10. At least one exhaust control mechanism / speed (not shown) comprising a rocker, a wheel and exhaust pinion assembly, an anchor and a front axle wheel (not shown) comprising a second wheel and pinion assembly, a third wheel and pinion assembly, a wheel and pinion gear unit and a cylinder wheel is disposed on a front lateral surface of the main plate 20.
    As illustrated in FIG. 3, at least one rear wheel comprising a central wheel 17, a minute wheel 18 and an hour wheel 21, an intermediate minute wheel 19 meshing with the minute wheel 18, a date indicator 30, a first wheel intermediate date 24, a second intermediate date wheel 25, a driving wheel of the date indicator 26, a date hand 27 and a date jumper 28 (see Fig. 2) are arranged on the side of the dial 11 of the main turntable 20. In addition, the date indicator holding plate 29 which holds the date indicator 30, the first date intermediate wheel 24, the second date intermediate wheel 25, the driving wheel of the indicator of date 26, the date hand 27 and the date jumper 28 (see Fig. 2) are attached to the back of the main turntable 20. In addition, the dial 11 is disposed on the back of the turntable 29 of maintaining the date indicator so as to be visible through to glass 2 (see Fig. 1).
    The second wheel and pinion assembly, the central wheel 17 and the hour wheel 21 are arranged respectively coaxially with the first axis C1. Among these, the central wheel 17 is configured to rotate once per hour by the rotation of the cylinder wheel via rotations of the wheel and pinion gear assembly and the third wheel and pinion assembly. An arm portion 58 representing the control mechanism 50 is mounted externally and fixed to a cylindrical portion 17a of the central wheel 17. In addition, a spring clip 22 is mounted externally on the cylindrical portion 17a of the central wheel 17 since This prevents the arm portion 58 from shifting in the axial direction.
    In addition, the second wheel and pinion assembly is configured to rotate once per minute via the rotations of the wheel and central gear assembly and the third wheel and pinion assembly. Then, the seconds hand 6 is attached to a second balance shaft 16 extending on the first axis C1 from the second wheel and pinion assembly.
    The hour wheel 21 is configured to rotate once every 12 hours by the rotations of the central wheel 17 and the minute wheel 18. The hour hand 5 is fixed to the hour wheel 21.
    As illustrated in FIG. 2, the date indicator 30 is rotatably attached to the main plate 20 and has a generally annular shape. The date indicator 30 has a plurality of inner teeth 30a on the inner peripheral edge of an opening. A major surface of the back side (i.e., the side of the dial 11) of the movement 10 in the date indicator 30 displays date letters that indicate the date between the first day and the 31st day. In fig. 2, only a portion of the date letters displayed on the date indicator 30 are illustrated.
    As illustrated in FIG. 3, the driving force of the hour wheel 21 is transmitted to the date indicator drive wheel 26 by the rotation of the first intermediate date wheel 24 and the second intermediate date wheel 25 which are fixed in rotation to the main plate 20.
    The driving wheel of the date indicator 26 is a clockwork component that moves the date indicator 30 once a day (when it reaches midnight) so as to indicate the date indicator. next day, and is configured to turn 24-hours counter-clockwise, based on the rotations of the hour wheel 21, the first intermediate date wheel 24 and the second intermediate date wheel. 25. The date hand 27 which meshes with the inner teeth 30a of the date indicator 30 is formed on the rear (side 11 of the dial) of the drive wheel of the date indicator 26. If the date indicator drive wheel 26 is rotated anti-clockwise, the date hand 27 meshes with the inner teeth 30a of the date indicator 30. This causes the transmission of the rotational force of the wheel of training of the date indicator 26 at the inner teeth 30a of the date indicator 30 via the date hand 27. Then, the driving wheel of the date indicator 26 advances by one day the indicator of date 30 by rotation counterclockwise.
    The driving teeth of the cam 19a are formed in the intermediate wheel minutes 19 on the other rear side (side of the dial 11) from the holding plate of the date indicator 29. The teeth driving the cam 19a meshes with the teeth of the cam 56a formed in one end of the side of the main plate 20 of a cam wheel 56. This causes transmission of the driving force of the minute wheel 18 to the cam wheel 56 via the drive teeth of the cam 19a, thereby accelerating the speed of rotation. In the present embodiment, the cam wheel 56 is configured to rotate three times per hour.
    As illustrated in FIG. 2, the date jumper 28 is a clock component that regulates the position of the date indicator 30 in the direction of rotation and includes an elastically deformable date jumper spring 28a whose proximal end is fixed to the rear of the main plate 20 and whose distal end is a free end, and an engagement portion 28b disposed in the distal end of the spring jumper spring. The engaging portion 28b of the date jumper 28 is deflected against the inner teeth 30a on the date indicator side 30 by the spring of the date jumper 28a and can mesh with the inner teeth 30a of the date indicator 30. The date jumper 28 regulates the rotation of the date indicator 30 by the engaging portion 28b meshing with the inner teeth 30a of the date indicator 30. (Display mechanism) [0053] Next, the mechanism display 40 will be described in detail.
    The display mechanism 40 includes the indicator 42 used in the indication of the lapse of time by the indication of the information relating to minutes and the control mechanism 50 which changes the speed of movement of the indicator. 42 according to the passage of time. In addition, the control mechanism 50 comprises a cam 51 having the first axis C1 as a central axis and a cam follower assembly 55 rotating in the circumferential direction of the cam 51.
    As illustrated in FIG. 3, the cam 51 is mounted externally and fixed to a cylindrical portion 56b of the cam wheel 56. In addition, the cam wheel 56 is inserted externally into a pipe member 57. Next, the cam 51 is inserted externally and at rotating in the hour wheel 21 with respect to a cylindrical portion 21a of the hour wheel 21 via the cam wheel 56 and the pipe elements 57. The cam 51 and the cam wheel 56 rotate around the center of rotation of the first wheel 21. C1 axis counterclockwise at a rotation speed of three times per hour similarly to the cam wheel 56.
    As illustrated in FIG. 2, the outer peripheral surface of the cam 51 is formed to have a cam surface 52 formed so that a radius increases spiral clockwise (in the circumferential direction), and a stepped surface 54 which connects the position in which the radius of the first axis C1 on the surface of the cam 52 is minimized and the position where the radius is maximized. (Cam Follower Assembly) The cam follower assembly 55 is configured to have the arm portion 58, a lever 60 and the indicator needle 41.
    As illustrated in FIG. 3, in the arm portion 58, an arm body 58a extends in the radial direction and the inner end in the radial direction is mounted externally and fixed to the cylindrical portion 17a of the central wheel 17. The arm portion 58 rotates about the center of rotation of the first axis C1 in the clockwise direction at a rotational speed of once per hour, similar to the central wheel 17.
    The lever 60 is pivotally supported by the other outer side from an intermediate portion in the radial direction of the arm portion 58, via a lever shaft member 59 attached to the arm portion 58 .
    As illustrated in FIG. 2, the lever 60 is formed to extend while being folded from a pivotally supported portion by the axle member of the lever 59 to the cam 51. A hook-shaped cam follower 61 which enters in sliding contact with the surface of the cam 52 is formed at the end of the inside in the lever 60, in the radial direction.
    A lever wheel 62 is formed at the other end of the radially outer side in the lever 60. The lever wheel 62 is fan-shaped centered on the lever shaft member 59, an outer peripheral surface of the latter having a plurality of teeth.
    In the lever 60, a return spring 46 disposed in the indicator needle 41 ensures that the cam follower 61 is always deflected against the cam 51 via the indicator needle wheel 43 according to a predetermined deflection force. For example, the return spring 46 uses a coiled torsion spring.
    The indicator needle 41 is rotatably supported and pivoted about a second axis C2 in the outer end of the arm portion 58 in the radial direction, via a pointer pin element 44 attached to the arm portion 58.
    The indicator needle 41 is formed so as to extend from the cylindrical portion 43a of the indicator needle wheel 43.
    The indicator 42 is formed at the end opposite to the pivotally supported portion of the indicator needle 41. For example, the indicator 42 is star-shaped.
    The indicator needle wheel 43 meshing with the lever wheel 62 is formed at the other end which is opposite the indicator 42 in the indicator needle 41 and corresponds to the pivotally supported portion of the indicator needle 41. In other words, the lever 60 and the indicator needle 41 are mutually connected by a power transmission module 35 formed to include the lever wheel 62 and the indicator needle wheel 43.
    The cam 51 and the cam follower assembly 55 which are formed and described above rotate as follows. In other words, the cam 51 rotates counter clockwise at a rotational speed of three times per hour while the cam follower assembly 55 rotates clockwise at a rotational speed of one hour. times per hour. Then, when the cam follower 61 is deflected against the cam 51, the lever 60 of the cam follower assembly 55 is in sliding contact with the surface of the cam 52 and is moved around the cam 51 in a clockwise direction. watch with the arm portion 58.
    In this case, since the cam 51 includes the cam surface 52 and the stepped surface 54, the cam follower 61 of the lever 60 is moved away from the first axis C1 when it is moved over the surface of the cam. the cam 52 and is moved in the direction of approaching the first axis C1 as it passes over the stepped surface 54. Then, the lever 60 is rotated around the cam 51 while being pivotally displaced by the movement of the follower cam 61 of the lever 60 in response to rotation of the cam follower assembly 55.
    In addition, the power generated by the pivoting movement of the lever 60 is transmitted to the indicator needle 41 via the power transmission module 35 formed to include the lever wheel 62 and the indicator needle wheel 43. In this manner, the indicator needle 41 is pivotally displaced about the second axis C2 and rotates around the cam 51 in the clockwise direction. The indicator 42 displays the indexes 13 comprising the numbers "15", "30", "45" and "60" which indicate the information relating to the minutes.
    In this case, the variation of the pivotal movement amplitude and the pivoting movement speed of the lever 60 in the present embodiment depend on the size of the surface of the cam 52. Specifically, As the amount of radial displacement of the surface of the cam 52 increases, it is possible to increase the variation of the amplitude of pivotal movement and the speed of the lever 60.
    Furthermore, in addition to the amplitude of pivoting movement of the lever 60, the amplitude of pivoting movement of the indicator needle 41 depends on the ratio between the number of teeth of the indicator needle wheel 43 and the number of teeth of the lever wheel 62. Specifically, by increasing the ratio of the number of teeth of the lever wheel 62 to be greater than the ratio of the number of teeth of the indicator needle wheel 43, it is possible to increase the amplitude of pivotal movement of the indicator needle 41 and to increase the amplitude of pivotal movement of the indicator 42. By decreasing the ratio of the number of teeth of the lever wheel 62 to be less than the ratio of the number of teeth of the pointer needle wheel 43, it is possible to decrease the amplitude of pivotal movement of the indicator needle 41 and to decrease the amplitude of movement in pivoting of indicator 4 2. (Use) FIGS. 4 to 10 are explanatory views, respectively, of the display mechanism 40 and are explanatory views when displaying a predetermined time. In figs. 4 to 10, the hour hand 5 and the second hand 6 (for both, see Fig. 1) are omitted from the illustration.
    Then, the use of the display mechanism 40 of the present embodiment will be described. The use in which the indicator 42 configuring the display mechanism 40 begins use from the zero minute time and completes the use after the display of the 15-minute time will be described step by step in referring to figs. 4 to 10.
    As illustrated in FIG. 4, in an initial state where the indicator 42 displays the zero minute time, the stepped surface 54 of the cam 51 is disposed in an initial position in a region of (-X, -Y). In addition, the arm portion 58 of the cam follower assembly 55 is disposed in an initial position in a region of (-X, + Y). Further, the cam follower 61 of the lever 60 in the cam follower assembly 55 is in contact with the surface of the cam 52 in an initial position adjacent to the stepped surface 54 in the region of (-X, -Y). .
    Then, with the passage of time, the cam 51 rotates about the first axis C1 counterclockwise, while the cam follower assembly 55 rotates about the first axis C1 in the direction of the needles. of watch. In this case, the cam 51 is configured to rotate counterclockwise at a rotational speed of three times per hour, while the cam follower assembly 55 is configured to rotate clockwise. at a speed of rotation of once an hour. Therefore, the cam follower 61 of the cam follower assembly 55 rotates about the cam 51 clockwise and is moved into sliding contact with the surface of the cam 52.
    In this case, the surface of the cam 52 is formed so that the radius increases gradually in the direction of the clockwise (in the circumferential direction). As a result, the cam follower 61 is moved around the cam 51 on the surface of the cam 52 while being moved in the direction away from the first axis C1. In this manner, the lever 60 is rotated about the cam 51 while being pivotally displaced about the lever shaft member 59 in the clockwise direction by the movement of the cam follower 61 of the cam. lever 60 in response to rotation of the cam follower assembly 55.
    In addition, the power generated by the pivoting movement of the lever 60 is transmitted to the indicator needle 41 by the power transformation module 35 formed to include the lever wheel 62 and the indicator needle wheel 43. In this manner, the indicator needle 41 is pivotally displaced about the second axis C2 counterclockwise and rotates around the cam 51 in the clockwise direction. Therefore, the indicator 42 rotates around the cam 51 in the clockwise direction and is moved in the direction away from the first axis C1.
    The cam 51 and cam follower assembly 55 continue to perform the operation described above with the passage of time. In this case, the cam follower 61 of the lever 60 is moved while in sliding contact with the surface of the cam 52. Therefore, the cam follower 61 of the lever 60 is placed on the further side radially outwardly. relative to the initial position with the passage of time. It follows that the lever 60 is in a rotational movement situation about the lever axis element 59 in the other clockwise direction with respect to the initial position with the time flow.
    In addition, the indicator 42 of the indicator needle 41 is moved to the further radially outward side from the initial position in response to the rotational movement of the lever 60 relative to the initial position. It follows that the indicator 42 of the indicator needle 41 changes the speed of the movement and is moved in the direction of the distance from the first axis C1 while rotating in the direction of the clockwise. Therefore, it is possible to draw a path so as to be inflected in the + Y direction and to be moved to the radially outer side. Fig. 5 illustrates the indicator 42 when three minutes have elapsed since the start of use, FIG. 6 illustrates indicator 42 when six minutes have elapsed since the start of use, FIG. 7 illustrates the indicator 42 when nine minutes have elapsed since the start of use and FIG. 8 illustrates the indicator 42 when 12 minutes have elapsed since the start of use, respectively.
    Then, as illustrated in FIG. 9, when 15 minutes have elapsed since the start of use, the cam 51 rotates 270 ° from the initial position counterclockwise and the stepped surface 54 is moved to a region of (- X, + Y). In addition, the arm portion 58 of the cam follower assembly 55 rotates 90 ° from the initial position clockwise and is moved to a region of (+ X, + Y). In addition, the cam follower 61 of the lever 60 of the cam follower assembly 55 is disposed at a position farthest from the first axis C1 to the radially outer side, which is a boundary portion between the surface of the cam 52 and In this case, the lever 60 is in a state of rotational movement about the lever axis member 59 at the maximum clockwise angle from the initial position. Then, the indicator 42 of the indicator needle 41 is moved in the opposite direction to the first axis C1 in response to the rotational movement of the lever 60 and is disposed on the furthest radially outward side. Therefore, it is possible to display the index 13 of "15".
    Then, as illustrated in FIG. 10, when 15 minutes have elapsed since the start of use, the cam follower 61 of the lever 60 is moved on the stepped surface 54 in the direction of approaching the first axis C1 (i.e. radially inner) and is disposed in a portion where the surface of the cam 52 has a minimized diameter.
    In addition, the lever 60 is pivotally displaced about the lever axis member 59 counterclockwise by the movement of the cam follower 61. Then, the indicator 42 of the indicator needle 41 is moved in the direction of approaching the first axis C1 in response to the pivoting movement of the lever 60 and is disposed on the radially inner side. In this case, an inflection point P1 is formed in a position corresponding to the index 13 of "15", which is the position between the trajectory drawn when the indicator 42 is moved in the direction of the distance from the first C1 axis and the trajectory drawn when the indicator 42 is moved in the direction of the approximation of the first axis C1.
    In the present embodiment, in this manner, the indicator 42 is configured to be moved so that the trajectory drawn when the indicator 42 is moved in the direction of approaching the center of the display region 15 in continuity with the trajectory drawn when the indicator 42 is moved in the direction of the distance from the center of the display region 15.
    Here, the inflection point in the present embodiment (for example, the points of inflection P1 to P8 or the like) designates a point at which the direction of movement of the indicator 42 is changed.
    Then, the cam follower 61 of the cam follower assembly 55 rotates around the cam 51 clockwise again and is moved while slidingly contacting the surface of the cam 52. Then, the indicator 42 rotates around the cam 51 in the clockwise direction and is moved again in the direction away from the first axis C1. In this way, the point of inflection P2 is formed in a position corresponding to a portion between the index 13 of "15" and the index 13 of "30", which is the position between the trajectory drawn when the indicator 42 is moved in the direction of the approximation of the first axis C1 and the path drawn when the indicator 42 is moved in the direction away from the first axis C1.
    Subsequently, the uses described above are executed repetitively. Therefore, the indicator 42 draws the complicated trajectory while being repetitively moved in the direction of the approximation or the distance of the first axis C1, and this so as to form the points of inflection P1 to P8 in the positions corresponding to the respective indexes 13 and in the position corresponding to the portion between the respective indexes. In this way, it is possible to repeatedly display the indexes 13 from "15" to "60".
    According to the present embodiment, since the control mechanism 50 provided modifies the speed of movement of the indicator 42 and moves the indicator 42 in the direction of the approximation or the distance of the first axis C1, it is possible to draw the complicated trajectory of the indicator 42 using the simple structure. In addition, the control mechanism 50 moves the indicator 42 so as to form the points of inflection P1 to P8 between the trajectory drawn when the indicator 42 is moved in the direction of the approximation of the first axis C1 and the trajectory drawn when the indicator 42 is moved in the direction of the distance from the first axis C1. Therefore, it is possible to draw the curved path of the indicator 42. This allows the indicator 42 to draw the other complicated path. Therefore, it is possible to improve the design of the display mechanism 40.
    In addition, the control mechanism 50 is formed so that the cam 51 rotates about the first axis C1 and the cam follower assembly 55 rotates in the opposite direction to the direction of rotation of the cam 51. Therefore, it is possible to adopt the simple structure that includes fewer components. Further, the cam follower assembly 55 includes the lever 60 in which the cam follower 61 engaging the cam 51 is formed in one end and which rotates about the cam 51 in the circumferential direction while being moved to pivoting in response to the rotation of the cam follower assembly 55. Therefore, it is possible to arbitrarily adjust the pivotal movement amplitude of the lever 60 by changing the shape of the outer peripheral surface of the cam 51. , it is possible to arbitrarily adjust the speed of the pivoting movement of the lever 60 by changing the speed of the relative movement of the cam follower 61 relative to the cam 51. In addition, the indicator needle 41 is supported so as to be displaced. pivoting about the second axis C2 while the other end of the lever 60 and the other end of the indicator needle 41 are interconnected via the transmission module As a result, the indicator needle 41 is rotatable about the cam 51 in the circumferential direction while being pivotally displaced about the second axis C2, in response to the amplitude of pivotal movement and the speed of rotation. pivoting movement of the lever 60 which are previously adjusted. In this manner, it is possible to determine a desired trajectory of indicator 42 of indicator needle 41 by using the shape of the outer peripheral surface of cam 51 and the speed of relative movement of cam follower 61 relative to the cam 51. Therefore, it is possible to draw the complicated trajectory of the indicator 42 using the simple structure and it is thus possible to improve the design of the display mechanism 40.
    In addition, the power transmission module 35 is formed to include the indicator needle wheel 43 and the lever wheel 62. Therefore, it is possible to draw the more complicated trajectory of the indicator 42 by modifying the ratio between the number of teeth of the indicator needle wheel 43 and the number of teeth of the lever wheel 62 which mesh with one another and thus it is possible to improve the design of the display mechanism 40. Above all, it is possible to increase the amplitude of pivotal movement of the indicator needle 41 and to increase the amplitude of pivotal movement of the indicator 42 by increasing the ratio of the number of teeth of the lever wheel 62 of so that it is greater than the ratio of the number of teeth of the pointer needle wheel 43. It is possible to decrease the amplitude of pivoting movement of the indicator needle 41 and to reduce the range of motion pivoting the indicator 42 by decreasing the ratio of the number of teeth of the lever wheel 62 so that it is smaller than the ratio of the number of teeth of the indicator needle wheel 43. In this way, it is possible determining the desired trajectory of the indicator 42 of the indicator needle 41 by changing the ratio between the number of teeth of the indicator needle wheel 43 and the number of teeth of the lever wheel 62 in addition to the form of the outer peripheral surface of the cam 51 and the speed of the relative movement of the cam follower 61 relative to the cam 51. Therefore, it is possible to draw the complicated trajectory of the indicator 42 using the simple structure and it is thus possible to improve the design of the display mechanism 40.
    In addition, the cam 51 comprises the cam surface 52 whose radius is formed so as to increase in the direction of the clockwise. Therefore, it is possible to adjust the pivotal movement amplitude of the lever 60 by changing the shape of the surface of the cam 52, when the cam follower 61 of the lever 60 rotates around the cam 51 in a state where the cam follower 61 of the lever 60 is in contact with the surface of the cam 52. Therefore, it is possible to easily modify the curvature of the trajectory of the indicator 42 which is drawn in a curved shape by modifying the curvature of the cam. the surface of the cam 52, for example. Therefore, it is possible to draw the desired trajectory easily.
    In addition, the cam 51 and the cam follower assembly 55 rotate about the first axis C1 in diametrically opposite directions, the cam 51 rotating faster than the cam follower assembly 55. Therefore, the cam 51 can rotate several times while the cam follower assembly 55 turns once. In this way, the cam follower 61 of the lever 60 can pass over the surface of the cam 52 and the stepped surface 54 which connects the position in which the radius of the first axis C1 is minimized on the surface of the cam 52 and the position wherein the radius is maximized, repeatedly, and can be moved reciprocally several times in the direction of approaching or moving away from the first axis C1, in response to passing over the surface of the cam 52 and the stepped surface 54 In this case, the lever 60 is pivotally displaced in response to the reciprocal movement of the cam follower 61, the indicator needle 41 being pivotally displaced by the power transmission module 35. Therefore, the indicator 42 may be moved reciprocally multiple times in the direction of approximation or removal of the first axis C1 in response to the number of times that the cam follower 61 of the lever 60 passes on the surface of the In this manner, in response to a rotational speed ratio between the cam 51 and the cam follower assembly 55, it is possible to change the number of times that the indicator 42 is moved. reciprocally in the direction of the approximation or the removal of the first axis C1. Therefore, it is possible to draw the complicated trajectory of the indicator 42 using the simple structure and it is thus possible to improve the design of the display mechanism 40.
    In addition, the cam follower assembly 55 rotates once in the clockwise direction while the cam 51 rotates three times counterclockwise (in other words, rotational speed). the cam 51 is equal to three times the rotational speed of the cam follower assembly 55). Therefore, the cam follower 61 of the lever 60 can pass over the stepped surface 54 which connects the position in which the radius of the first axis C1 is minimized on the surface of the cam 52 and the position in which the radius is maximized, at four times, when the cam follower assembly 55 rotates once in the clockwise direction. Therefore, the indicator 42 can rotate, while being moved reciprocally four times, in the direction of the approximation or removal of the first axis C1. Therefore, for example, it is possible to draw the complicated trajectory petal-shaped centered on the first axis C1.
    In addition, by providing the display mechanism described above 40, it is possible to obtain the movement 10 and the watch 1, whose design is excellent, to draw the complicated trajectory of the indicator 42 by using the simple structure. (First modified example of the embodiment) [0094] Thereafter, the display mechanism 40 according to a first modified example of the embodiment will be described.
    FIG. 11 is an explanatory view of the display mechanism 40 according to the first modified example of the embodiment.
    In the display mechanism 40 of the embodiment, the cam 51 includes the cam surface 52 and the stepped surface 54, the cam follower 61 being moved while slidingly engaging the surface of the cam 52. (see Fig. 1).
    On the contrary, as illustrated in FIG. 11.1e display mechanism 40 according to the first modified example of the embodiment is different from that of the embodiment in that a cam 151 comprises a cam groove 152 and a stepped groove 154 and a cam follower 161 is moved along the cam groove 152 and the stepped groove 154. In the following description, configuration elements which are identical to those of the embodiment will be omitted, only different elements being described.
    The cam groove 152 is spirally formed on the main surface of a disk-shaped element, for example clockwise (in the circumferential direction) so as to obtain a greater distance in the radial direction of the first axis C1.
    In addition, the cam follower 161 of the lever 60 is formed to have a convex portion 161a that can be moved along the cam groove 152. For example, the convex portion 161a is formed to protrude from a end portion of the radially inner side of the lever 60 to the cam 151 so as to extend in the axial direction. By disposing the convex portion 161a within the cam groove 152, the cam follower 161 can be moved along the cam groove 152 as the cam 151 rotates counter-clockwise at a speed of 15 °. rotation three times per hour, the cam follower assembly 55 rotating in a clockwise direction at a rotational speed of once per hour. This allows the indicator 42 of the indicator needle 41 to be used in a manner similar to the embodiment and to display the index 13.
    According to the first modified example of the embodiment, it is possible to simply form the cam 151 at a low cost. Further, the cam follower 61 of the lever 60 is formed to cause the convex portion 161a to be movable along the cam groove 152 and the stepped groove 154. Therefore, the cam follower 161 can be moved to the cam groove 152 and the stepped groove 154 by simply disposing the convex portion 161a of the lever 60 in any one of the cam grooves 152 and the stepped grooves 154. Therefore, for example, there is no need for disposing a deflecting member for deflecting the cam follower 161 against the cam 151 so that the cam follower 161 engages the cam 151. Therefore, it is possible to arrange the display mechanism 40 so as to have the simpler structure and therefore, it is possible to reduce the cost. (Second modified example of the embodiment) [0101] As a result, the display mechanism 40 according to a second modified example of the embodiment will be described.
    [0102] FIG. 12 is an explanatory view of the display mechanism 40 according to the second modified example of the embodiment.
    In the display mechanism 40 of the embodiment, the outer peripheral surface of the cam 51 is shaped to have the surface of the cam 52 formed so that the radius spirals and the stepped surface 54 which connects the position in which the radius of the first axis C1 is minimized and the position in which the radius is maximized (see Fig. 1).
    On the contrary, as illustrated in FIG. 12, the display mechanism 40 according to the second modified example of the embodiment is different from that of the embodiment in that the outer peripheral surface of a cam 251 is formed to have a cam surface 252 comprising two surfaces of auxiliary cams 253a and 253b with a convexly curved surface shape. In the following description, configuration elements that are identical to those of the embodiment will be omitted, only different elements being described.
    The cam surface 252 of the cam 251 is configured to have two auxiliary cam surfaces 253a and 253b with a convexly curved surface and is heart-shaped, viewed from the axial direction. Between boundary portions between two auxiliary cam surfaces 253a and 253b, a boundary portion is a deepest portion 254a whose separation distance is closest to the first axis C1 and the other boundary portion is a shallower portion 254b whose separation distance is furthest from the first axis C1.
    [0106] In FIG. 12, the deepest portion 254a is disposed in the region of (-X, + Y) and the shallower portion 254b is disposed in the region of (+ X, -Y). Further, the cam follower 61 of the lever 60 is positioned above the deepest portion 254a of the cam surface 252 and is disposed in a position which is closest to the radially outer side of the first axis C1. In this case, the indicator 42 of the indicator needle 41 is arranged in a position corresponding to the point of inflection P8 which is a position between the indexes 13 of "60" and "15".
    The point of inflection P8 is located in a position corresponding to the time of seven minutes and 30 seconds (that is to say that the elapsed time is seven minutes and 30 seconds after the indicator 42 starts at move from a position of the index 13 of "60").
    In the display region 15, the indexes 13 displayed every five minutes between "5" and "60" are juxtaposed sequentially in the direction of the clockwise, in the vicinity of the trajectory of the indicator 42 of the in the second modified example of the embodiment, similar to the embodiment, the indexes 13 of "15", "30", "45" and "60" are arranged so as to maintain a pitch of 90 °. The indexes 13 of "5" and "10" are displayed in the region of (+ X, + Y) which is located between the indexes 13 of "60" and "15", the indexes 13 of "20" and "25". Are displayed in the region of (+ X, -Y) which is located between the indexes 13 of "15" and "30", the indexes 13 of "35" and "40" are displayed in the region of (-X , -Y) which is located between the indexes 13 of "30" and "45", and the indexes 13 of "50" and "55" are displayed in the region of (-X, + Y) which is between the indexes 13 of "45" and "60". (Use of the display mechanism according to the second modified example of the embodiment) [0109] As a result, the use of the display mechanism 40 according to the second modified example of the embodiment will be described. In the following description, the uses of the indicator 42 for 15 minutes will be described step by step in that the indicator 42 configuring the display mechanism 40 starts the use from the position of the point of inflection P8 indicating the time of seven minutes and 30 seconds (i.e. the elapsed time is seven minutes and 30 seconds after the indicator 42 begins to move from a position of the index 13 of "60") and reaches the position of the point of inflection P2 indicating the time of 22 minutes and 30 seconds by means of the point of inflection P1 indicating the time of 15 minutes. In the following description, the position of the point of inflection P8 is called "initial position".
    In an initial state where the indicator 42 indicates the time of seven minutes and 30 seconds, the deepest portion 254a of the cam 251 is disposed in the initial position of the region of (-X, + Y). Further, the arm portion 58 of the cam follower assembly 55 is disposed in the initial position substantially on the X axis. In addition, the cam follower 61 of the lever 60 in the cam follower assembly 55 is contact with the deepest portion 254a of the cam surface 252 which is the region of (-X, + Y).
    With the passage of time, the cam 251 and the cam follower assembly 55 rotate around the first axis C1. In this case, the cam 251 is configured to rotate counter clockwise at a rotational speed of three times per hour, the cam follower assembly 55 being configured to rotate clockwise at a speed of rotational speed of once an hour. Therefore, the cam follower 61 of the cam follower assembly 55 is moved to the shallower portion 254b in sliding contact with the first auxiliary cam surface 253a.
    Here, the surface of the first auxiliary cam 253a is formed so that the separation distance from the first axis C1 is progressively greater from the deepest portion 254a to the shallower portion 254b. As a result, the cam follower 61 rotates about the cam 251 on the surface of the first auxiliary cam 253a while being moved in the direction of gradual removal from the first axis C1. In this manner, the lever 60 is rotated about the cam 251 while rotating due to the movement of the cam follower 61 of the lever 60 in response to the rotation of the cam follower assembly 55. In this case, The indicator 42 is moved in the direction of gradual removal from the first axis C1 (that is, radially outwardly).
    In addition, the power generated by the pivoting movement of the lever 60 is transmitted to the indicator needle 41 by the power transmission module 35 formed to include the lever wheel 62 and the indicator needle wheel 43. In this manner, the indicator needle 41 rotates about the cam 251 in the clockwise direction while being pivotally displaced about the second axis C2. Then, the indicator 42 of the indicator needle 41 passes on the index 13 of "10" and is moved towards the index 13 of "15" so as to draw a curved trajectory.
    Then, when the elapsed time is seven minutes and 30 seconds since the start of use (i.e. the elapsed time is 15 minutes after the indicator 42 begins to move from the position of the index 13 of "60"), the cam 251 rotates, counterclockwise, by 135 ° with respect to the initial position illustrated in FIG. 12, the shallower portion 254b being moved to the region of (-X, + Y). In addition, the arm portion 58 of the cam follower assembly 55 rotates clockwise 45 ° from the initial position and is moved to the region of (+ X, + Y). In addition, the cam follower 61 of the lever 60 in the cam follower assembly 55 is in contact with the shallower portion 254b. In this case, cam 251 and cam follower assembly 55 rotate relatively 180 ° from the home position. Therefore, the cam follower 61 of the lever 60 is relatively rotated by 180 ° from the deepest portion 254a which is the initial position and is disposed in the shallower portion 254b which is farthest away from the radially outer side. of the first axis C1. In this manner, the indicator 42 is moved in the direction away from the first axis C1 (i.e. radially outward) in response to the rotational movement of the lever 60 and displays the index 13 of "15" when positioned on the radially furthest outer side.
    If the elapsed time is seven minutes and 30 seconds since the start of use (i.e. the elapsed time is 15 minutes after the indicator 42 begins to move from the position of the index 13 of "60"), the indicator 42 passes over the shallower portion 254b of the surface of the cam 252 and is moved from the surface of the first auxiliary cam 253a to the surface of the second auxiliary cam 253b. This causes the formation of the inflection point P1 in the position corresponding to the index 13 of "15".
    In addition, with the lapse of time, the cam follower 61 of the cam follower assembly 55 is rotated relatively circumferentially of the cam 251 and is moved to the deepest portion 254a while entering in sliding contact with the surface of the second auxiliary cam 253b. In this case, with the passage of time, the indicator 42 is moved in the direction of the approximation of the first axis C1 (that is to say radially inwards), while turning in the direction of the shows, and displays the index 13 of "20".
    Then, when the elapsed time is 15 minutes after the use has started since the point of inflection P8 which is the initial position (that is to say that the elapsed time is 22 minutes and 30 minutes). seconds after the indicator 42 begins to move from the position of the index 13 of "60"), the cam 251 rotates 270 ° counter-clockwise from the initial position, the follower assembly cam 55 rotates 90 ° clockwise from the initial position and the cam follower 61 of the lever 60 comes into contact again with the deepest portion 254a of the surface of the cam 252. In this case, the cam 251 and the cam follower assembly 55 rotate relatively 360 ° from the initial position. In this way, the indicator 42 of the indicator needle 41 is moved in the direction of the approaching of the first axis C1 (that is to say radially inwards) in response to the rotational movement of the lever 60, and is arranged in the position corresponding to the point of inflection P2 on the radially inner side nearest.
    Then, by repeatedly executing the operations described above, the indicator 42 forms the points of inflection P1 to P8 by drawing the complicated trajectory in petal shape and rotates around the first axis C1 in the direction of the watch hands. In this manner, the indicator 42 may display the respective indexes 13.
    The technical scope of the present invention is not limited to the embodiment described above and may be further modified in various ways without departing from the essence of the present invention.
    The display mechanism 40 of the embodiment and the respective modified examples are configured so that the cams 51, 151 and 251 rotate counterclockwise at a rotational speed of three times per hour and the cam follower assembly 55 rotates clockwise at a rotational speed of once per hour. However, the rotational speed of cam 51 and cam follower assembly 55 is not limited thereto. For example, a configuration can be made so that the cams 51, 151 and 251 rotate in the clockwise direction at the rotational speed of five times every 12 hours, the cam follower assembly 55 rotating in the opposite direction. watch hands at a rotation speed of once every 12 hours. In this case, the indicator 42 can be moved reciprocally six times in the direction of the approximation or the distance of the first axis C1 while turning once around the first axis C1. Therefore, it is appropriate to use the indicator 42 as the hour hand, for example. In this way, it is possible to adapt the trajectory of the indicator 42 so that it has a desired shape by modifying the speed of rotation of the cams 51, 151, 251 and the cam follower assembly 55 of various manners.
    The display mechanism 40 of the embodiment comprises the cam surface 52 whose diameter increases progressively in the direction of the clockwise. However, the irregularly camming surface 52 may be included by continually and circumferentially providing multiple auxiliary cam surfaces having a concave surface shape or a convex surface shape. In this case, the indicator 42 can be moved while drawing a place of oscillation between the respective inflection points P1 to P8. In this way, it is possible to adapt the trajectory of the indicator 42 so that it has a desired shape by changing the shape of the surface of the cam 52 in various ways.
    The display mechanism 40 of the embodiment and the respective modified examples comprise the power transmission module 35 which transmits the power of the lever 60 to the indicator needle 41 using the lever wheel 62 and the drive wheel. However, the shape of the power transmission module 35 is not limited to that of the embodiment nor to the respective modified examples. For example, the power transmission module 35 may be formed by connecting the lever 60 and the indicator needle 41 with a belt and a pulley.
    In the display mechanism 40 of the embodiment and the respective modified examples, the indicator 42 is star-shaped and displays each number of the indexes 13. However, the shape of the indicator 42 is not limited to that of the embodiment nor the respective modified examples. This form can be modified in various ways. Therefore, for example, the indicator 42 may be needle-shaped or ring-shaped.
    In the display mechanism 40 of the embodiment and the respective modified examples, the cams 51, 151, 251 and the cam follower assembly 55 rotate about the first axis C1 as a central axis of common rotation. . However, the central axis of rotation of the cams 51, 151 and 251 may not be coaxial with the axis of the center of rotation of the cam follower assembly 55.
    The display shape of the indexes 13 on the dial 11 is not limited to that of the embodiment nor the respective modified examples, but can be modified in different ways.
    In addition, in the display mechanism 40 of the embodiment and the respective modified examples, the indicator needle 41 has the function of a minute hand and the indicator 42 indicates the minutes. On the contrary, the indicator needle 41 may have a second hand function and the indicator 42 may indicate the seconds. The indicator needle 41 may have an hour hand function and the indicator 42 may indicate the hours. The indicator needle 41 may have a day hand function and the indicator 42 may indicate the days. That is, the display mechanism 40 is not limited to the display aspect of the minute information.
    权利要求:
    Claims (8)
    [1]
    claims
    A clock display mechanism comprising: an indicator (42) which is used to display the flow of time; and a control mechanism (50) that changes a speed of movement of the indicator (42) in response to the lapse of time and moves the indicator (42) in a direction of reconciliation or removal from the center of a display unit (15), wherein the control mechanism (50) moves the indicator (42) so that a path drawn when the indicator (42) is moved in the direction of the reconciliation the center of the display unit (15) is in continuity with a trajectory drawn when the indicator (42) is moved in the direction away from the center of the display unit (15), and in wherein the control mechanism (50) comprises a cam (51,151,251) which rotates about a first axis (C1) and a cam follower assembly (55) which rotates in a direction opposite to the direction of rotation of the cam ( 51, 151, 251), the cam follower assembly (55) comprising: - a lever (60) having in a first at its ends a cam follower (61,161) in contact with the cam (51,151,251), which lever (60) rotates about the cam (51,151,251) while being pivotally displaced in response to rotation of the cam (51,151,251); cam follower assembly (55); and - an indicator needle (41) having at one of its ends the indicator (42) and the second of its ends (43) being supported so as to be pivotally displaced about a second axis (C2) positioned outside the cam (51,151,251) in a radial direction, which indicator needle (41) rotates about the cam (51,151,251) in response to rotation of the cam follower assembly (55), the second end (62) of the lever (60) and the second end (43) of the indicator needle (41) being mutually connected by a power transmission module (35).
    [2]
    The timepiece display mechanism according to claim 1, wherein the power transmission module (35) comprises an indicator needle wheel (43) formed in the second end of the indicator needle (41) and an indicator wheel (43). lever (62) formed in the second end of the lever (60).
    [3]
    The timepiece display mechanism according to claim 1 or 2, wherein the cam (51,151,251) includes a cam surface (52, 252) whose radius is configured to increase in the circumferential direction of the cam (51,151,251).
    [4]
    The clock display mechanism according to claim 1 or 2, wherein the cam (151) comprises a groove (152) which is shaped such that the distance from the first axis (C1) in the radial direction increases in the direction circumferentially of the cam (151), and wherein the cam follower (61, 161) of the lever (60) is formed to have a convex portion which is movable along the groove (152).
    [5]
    The timepiece display mechanism according to claim 3 or 4, wherein the cam (51, 151, 251) and the cam follower assembly (55) rotate about the first axis (C1) in opposite directions to each other, and wherein the cam (51,151,251) rotates faster than the cam follower assembly (55).
    [6]
    The clock display mechanism of claim 5, wherein the speed of rotation of the cam (51,151,251) is three times the rotational speed of the cam follower assembly (55).
    [7]
    7. A watch movement comprising the watch display mechanism according to claim 1.
    [8]
    8. Timepiece comprising the watch movement according to claim 7.
    类似技术:
    公开号 | 公开日 | 专利标题
    CH708264B1|2018-11-15|Watchmaking mechanism with an indicator moving closer to and away from the center of a dial.
    EP3208665B1|2019-01-02|Retrograde clock display with retractable hand
    EP3159751B1|2018-10-03|Flexible resilient hand
    EP3029531B1|2018-08-01|Device for displaying periods forming an annual cycle
    CH710109A2|2016-03-15|Mechanism for automatic calendar, movement, and timepiece.
    CH709222B1|2019-07-15|Display mechanism, timepiece movement and timepiece.
    CH705041B1|2017-07-31|Retrograde display mechanism and timepiece comprising such a mechanism.
    CH709331B1|2019-10-31|Display mechanism, movement and timepiece.
    CH708265B1|2018-11-30|Display clock mechanism with variable speed.
    EP2884349B1|2020-07-01|Method for controlling an analogue display provided on a watch movement
    EP2993532A2|2016-03-09|Driving mechanism of at least one mobile element
    EP3152626B1|2019-01-30|Electronic clock movement comprising an analog display of several items of information
    EP3605243A1|2020-02-05|Variable geometry timepiece display mechanism with elastic needle
    CH714795A1|2019-09-30|Timepiece comprising a mechanism for correcting indications provided by a first and second display member.
    EP3239786B1|2021-09-08|Mechanism for driving an animation of a clock movement
    EP3168693B1|2018-11-07|Clock movement
    CH708266A2|2014-12-31|Clockworks with date display.
    CH715211A2|2020-01-31|Timepiece mechanism with variable geometry with elastic hand.
    CH702133B1|2011-05-13|Time displaying device for watch, has planet gear comprising turns for completing rotation of sun gear, and display unit provided with indexes, where product value of numbers of turns and indexes is equal to twelve
    EP3751357B1|2021-11-10|Timepiece mechanism comprising a device for displaying at least two items of information
    EP2177959B1|2011-05-11|Mechanism for driving hands
    EP2735920B1|2020-03-18|Timepiece movement provided with a rotary, hollow, three-dimensional element
    WO2020095094A1|2020-05-14|Device for indicating at least one magnitude
    CA2893741A1|2016-12-03|Mechanism for displaying sun rise/sunset times at different latitudes, kit with components to assemble such a mechanism, and corresponding assembly, operation and usage methods
    CA2861286A1|2016-02-29|Mechanism for the display of sunrise/sunset hours at different latitudes, kit with components to assemble such a mechanism and corresponding assembly, operation and usage methods
    同族专利:
    公开号 | 公开日
    JP6334098B2|2018-05-30|
    CH708264A2|2014-12-31|
    CN104238340B|2018-03-16|
    JP2015007540A|2015-01-15|
    CN104238340A|2014-12-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CN2032735U|1988-03-07|1989-02-15|林泽生|Colour clock and watch face-disk with movable and multivariant function|
    IL116249A|1994-12-12|2003-07-06|Pfizer|Nk-1 receptor antagonists for the treatment of neuronal damage and stroke|
    AU3672300A|2000-04-06|2001-10-23|Seiko Instruments Inc.|Electronic timepiece with indicator hands|
    CH703546B1|2001-12-20|2012-02-15|Piguet Frederic Sa|Timepiece i.e. complicated wrist watch, has cam formed by spiral transition from high point to low point under action of return spring to drive hand of noon phase display in retrogressive movement at beginning of cycle of new lunation|
    JP3568526B1|2003-11-10|2004-09-22|博 中野|Analog clock|
    CN101644912A|2008-08-05|2010-02-10|严嘉|Clock with dynamic patterns on dial plate surface|
    JP2012013457A|2010-06-29|2012-01-19|Techno Ark Company Limited|Calendar timepiece|
    CH704094B1|2010-11-15|2014-10-31|Daniel Nebel|Display mechanism for a timepiece with mechanical movement.|
    CN201993586U|2010-12-30|2011-09-28|上海表业有限公司|Return-type pointer mechanism possessing avoiding structure|EP3208665B1|2016-02-18|2019-01-02|Blancpain SA.|Retrograde clock display with retractable hand|
    CN106338906B|2016-08-27|2018-11-27|青岛懿姿饰品股份有限公司|A kind of magnetic drives ornaments and its manufacturing method|
    CH715106A1|2018-06-18|2019-12-30|Sa De La Manufacture Dhorlogerie Audemars Piguet & Cie|Display mechanism with non-circular trajectory, in particular elliptical.|
    CN111221240A|2020-03-11|2020-06-02|励创海丝钟表产业工业设计研究有限公司|Clock with bent pointer|
    CN111399363B|2020-04-10|2021-05-11|戴亚高|Direction-changeable hour hand indicating two-dimensional machine core|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP2013131948A|JP6334098B2|2013-06-24|2013-06-24|Display mechanism, watch movement and watch|
    [返回顶部]