• 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 display mechanism comprising: an indicator (42) used to indicate the elapsed time and a control mechanism (50) configured to vary the speed of movement of the indicator (42) according to the elapsed time. The control mechanism (50) is provided with a cam (51) and a cam follower (55). The cam follower (55) is provided with a lever (60) in contact with the cam (51) upon rotation of the cam follower (55) and a needle (41) provided at its end with the cam follower (55). indicator (42). The needle (41) and one end of the lever (60) are connected to each other by a gear train (43, 62).
    公开号:CH708265B1
    申请号:CH00954/14
    申请日:2014-06-24
    公开日:2018-11-30
    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] This invention relates to a display mechanism, a timepiece movement equipped with this display mechanism and a timepiece. 2. Description of the Prior Art [0002] A mechanical timepiece such as a wristwatch has, in addition to the function of indicating the time, an ornamental function. Therefore, it is conventionally known a mechanical timepiece equipped with a special display mechanism to achieve an improvement in the display of information of the time, day, etc. indicated by indicator hands such as an hour hand, a minute hand, a second hand, and a day hand.
    For example, JP-A-2005-17 295 (Patent Literature 1) discloses an analog display device which is an analog display device (display mechanism) for a selected route previously mounted on a rod of support and having an indicator for the values to be displayed and which has an analog display device having a control device for the indicator constructed in such a way that the free end of the indicator follows the previously selected route, with a rotation around a support rod.
    The indicator control device includes a longitudinal groove configured to slide relative to two pins provided on a guide arm mounted on the support rod, and includes a lateral groove configured to be guided by a pin provided on a connected arm. to the guide arm.
    The trajectory of movement of a needle on the dial is determined by the speed of rotation of the arm relative to the guide arm and the configuration of each groove.
    More specifically, the guide arm rotates in one hour, and is mounted on the hour hand of the timepiece. The arm is moved by the hour hand, and makes two rotations in one hour. A plurality of pins are conducted in the guide arm and the arm, and the pin of the arm is arranged in a second groove in a state in which the needles are installed on the guide arm and the arm and wherein a first groove is adjusted in position by the pin of the guide arm. By guiding the needle thus using the first groove, the needle rotates in one hour. In addition, the distal end of the needle is moved in the radial direction by the pin driving in the arm rotating in the circumferential direction, along which it moves along an elliptical path.
    However, in the existing art, the first groove has a linear configuration, and the needle rotates in the radial direction according to a predetermined cycle due to the pin of the arm. Thus, the trajectory of movement of the indicator portion of the needle is restricted to a symmetrical configuration with respect to the center of rotation of the guide arm, so that there is a problem from the point of view of the drawing of a superior complicated motion trajectory. In addition, in general, when the movement path of the indicator portion of the needle is complicated, the display mechanism also tends to be complicated. SUMMARY OF THE INVENTION [0008] Accordingly, an object of the present invention is to provide a display mechanism capable of causing a complicated trajectory to be made to the indicator portion, by means of a simple structure, to achieve this way. an improvement, a timepiece movement equipped with this display mechanism and a timepiece.
    To achieve the above mentioned purpose, the display mechanism according to the present invention comprises an indicator portion used to indicate the elapsed time, as well as a control mechanism configured to differentiate the speed of movement of the indicator portion. according to the time passing.
    According to the present invention, there is provided a control mechanism differentiating the speed of displacement of the indicator portion, so that it is possible to make a complicated trajectory to the indicator part, by means of a simple structure, realizing in this way an improvement.
    In addition, the control mechanism in the display mechanism according to the invention is equipped with a cam and a cam follower unit rotating in the peripheral direction of the cam. The cam has an axis of rotation, which is a first axis. Still in the display mechanism according to the invention, the cam follower unit is equipped, on the one hand, with a lever having at a first end a cam follower portion held in contact with the cam and configured for rotating in the circumferential direction about the cam while rocking by a rotation of the cam follower unit, and secondly, a needle whose first end has the indicator portion and whose second end is rotatably supported about a second rod located radially on the outer side of the cam, the needle rotating in the circumferential direction about the cam with the rotation of the cam follower unit. Still in the display mechanism according to the present invention, a second end of the lever and the second end of the needle are connected to each other.
    According to the present invention, the control mechanism is formed by the cam, whose axis of rotation is the first axis, and by the cam follower unit rotating in the circumferential direction of the cam, so that it can be of a simple structure with a small number of components. Further, the cam follower unit is provided with a lever having at one end a cam follower portion held in contact with the cam and configured to rotate in the circumferential direction about the cam while tilting with the cam. rotating the cam follower unit, so that by changing the configuration of the outer peripheral surface of the cam, it is possible to arbitrarily adjust the amount of tilting of the lever. In addition, by changing the relative speed of displacement of the cam follower portion relative to the cam, it is possible to arbitrarily adjust the lever swing rate. In addition, the needle is rotatably supported about the second shaft, and a second end of the lever and the second end of the needle are connected together so that the needle can rotate in the peripheral direction around of the cam by rotating around the second rod according to the set tilt amount and the set tilt speed of the lever. In this way, it is possible to determine a desired trajectory of the indicator portion of the needle according to the configuration of the outer peripheral surface of the cam and the relative speed of displacement of the follower portion relative to the cam, so that it is possible to make a complicated trajectory to the indicator part by means of a simple structure, making it possible to achieve an improvement.
    In the display mechanism according to the present invention, the second end of the lever and the second end of the needle can be connected to one another by transmission means.
    In addition, the transmission means may be formed by a needle gear toothing formed at the second end of the needle and by a lever gear teeth formed at the second end of the needle. the sink.
    When this is the case, the transmission means are formed by a gear gear toothing and a lever gear teeth, so that by changing the ratio of the number of teeth of the teeth of Needle gear on the number of teeth of the gear lever gear meshing with it, it is possible to further perform a complicated trajectory to the indicator part, also making it possible to achieve an improvement. In particular, by making the ratio of the number of teeth in the toothing of the gear teeth larger than the ratio of the number of teeth of the needle gear teeth, it is possible to increase the amount of tilting at the moment. of the rotation of the needle to increase the amount of tilting of the indicator portion, and, making the ratio of the number of teeth of the toothing of gear lever smaller than the ratio of the number of teeth of the toothing of needle gear, it is possible to decrease the amount of tilt at the time of rotation of the needle to decrease the amount of tilting of the indicator portion. In this way, by changing the ratio of the number of teeth of the needle gear teeth to the number of teeth of the lever gear teeth in addition to the configuration of the outer peripheral surface of the cam and the speed relative movement of the cam follower portion relative to the cam, it is possible to determine a desired trajectory of the pointer portion of the needle, so that a complicated trajectory can be made to the indicator portion by means of a simple structure.
    In addition, the cam may comprise a main cam surface whose distance to the first axis is increased when one goes from one side towards the other side in the peripheral direction, and the main cam surface can be formed. by a plurality of camming surfaces moving the cam follower portion of the lever alternately to and away from the first axis.
    When this is the case, the main cam surface is formed by a plurality of camming surfaces moving the cam follower portion of the lever alternately toward and away from the first axis. such that, by changing the configuration of the sub-cam surfaces, it is possible to adjust the amount of tilting of the lever when the cam follower portion of the lever rotates about the cam when in contact with the cam. main cam surface of the cam. Thus, the movement path of the indicator portion may, for example, be a curved line or a straight line, so that it is possible to perform a desired motion path.
    In addition, the cam may be equipped with a groove formed such that its distance to the first axis, in the radial direction, increases when one goes from one side towards the other side in the peripheral direction, while the cam follower portion of the lever may be formed by a protrusion movable along the groove.
    When this is the case, it is possible to form the cam easily and at low cost. Further, the cam follower portion of the lever is formed with a protrusion movable along the groove, so that it is possible for the cam follower portion to move along the groove only by arranging the protrusion of the lever in the groove. Thus, there is no need to provide, for example, a biasing member for urging the cam follower portion toward the cam so that the cam follower portion can engage the cam; therefore, it is possible to further simplify the structure of the display mechanism and achieve cost reduction.
    In addition, it can be provided that the cam and the cam follower unit rotate in the same direction from one side towards the other side in the circumferential direction about the first axis, and that the unit cam follower rotates at a higher speed than the cam.
    When this is the case, the cam and the cam follower unit rotate in the same direction from one side towards the other side in the peripheral direction around the first rod, and the follower unit the cam rotates at a higher speed than the cam, so that it is possible to cause the cam follower unit to rotate relative to the cam. Further, when the cam rotates, the cam follower unit makes a plurality of rotations around the cam, whereby it is possible for the trajectory of the indicator portion to be of a spiral configuration exposing a cam. number of revolutions corresponding to the number of revolutions of the cam follower unit. In this way, it is possible to change the number of revolutions of the spiral trajectory according to the ratio of the rotational speed of the cam and the cam follower unit, so that it is possible to make a complicated trajectory to the indicator part by means of a simple structure, making possible an improvement.
    In addition, the cam can be carried by a wheel hours, while it can be expected that the rotational speed of the cam follower unit is twice the speed of rotation of the cam.
    When this is the case, the cam is carried by the hour wheel, which rotates in 12 hours, so that it is possible to perform the trajectory of the indicator portion in a cycle of 12 hours. So, it is suitable when the indicator part is the hour hand. Further, since the rotational speed of the cam follower unit is twice the rotational speed of the cam, it is possible that the number of revolutions of the spiral motion path is two.
    In addition, a timepiece movement according to the present invention comprises a display mechanism according to the invention.
    In addition, a timepiece according to the present invention comprises a timepiece movement according to the invention.
    According to the present invention, there is provided a display mechanism as defined above, according to which it is possible to provide a movement of a timepiece and an upper timepiece, in which it is possible to make perform a complicated trajectory to the indicator part by means of a simple structure.
    According to the present invention, there is provided a control mechanism differentiating the speed of displacement of the indicator part, so that it is possible to make a complicated trajectory to the indicator part by means of a simple structure, making possible an improvement.
    Brief description of the drawings [0028]
    Fig. 1 is an external view of a timepiece according to one embodiment.
    Fig. 2 is an expiictive view of a movement as seen from the back side.
    Fig. 3 is a sectional view of the movement shown in FIG. 2.
    Fig. 4 is an explanatory view of a display mechanism when it indicates 0 hours.
    Fig. 5 is an explanatory view of the display mechanism when it indicates a time.
    Fig. 6 is an explanatory view of the display mechanism when H indicates two hours.
    Fig. 7 is an explanatory view of the display mechanism when H is three hours.
    Fig. 8 is an explanatory view of the display mechanism when H is four hours.
    Fig. 9 is an explanatory view of the display mechanism when H is five hours.
    Fig. 10 is an explanatory view of the display mechanism when H is six hours.
    Fig. It is an explanatory view of the display mechanism when H indicates seven hours.
    Fig. 12 is an explanatory view of the display mechanism when H indicates eight hours.
    Fig. 13 is an explanatory view of the display mechanism when H is nine hours.
    Fig. 14 is an explanatory view of the display mechanism when H is 10 hours.
    Fig. 15 is an explanatory view of the display mechanism when H is 11 hours.
    Fig. 16 is an explanatory view of the display mechanism when it indicates twelve hours.
    Fig. 17 is an explanatory view of a display mechanism according to a first modification of the embodiment.
    Fig. 18 is an explanatory view of a display mechanism according to a second modification of the embodiment.
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0029] In the following, an embodiment of this invention will be described with reference to the drawings.
    In what follows, a mechanical wristwatch according to an embodiment (which corresponds to the "timepiece" in the claims) and a movement inserted in this wristwatch (which corresponds to "movement of the piece"). in the claims) will be described first, and then a display mechanism will be described in detail.
    Timepiece [0031] A mechanical body including the driving part of a timepiece is generally called "movement." This is achieved by mounting a dial and hands to this movement and putting the whole into a timepiece case to form a complete product is called the "set" of the timepiece. Of the two sides of a main plate forming the substrate of the timepiece, the side where there is a glass of timepiece case, that is to say the side where there is the dial, is called the "back side" of the movement. Of the two sides of the main plate, the side where there is the back case of the timepiece, that is to say the opposite side of the dial, is called the "front side" of the movement.
    FIG. 1 is an external view of a timepiece 1 according to one embodiment.
    As shown in FIG. 1, the entire timepiece 1 of the present embodiment is equipped, inside a timepiece case 3 consisting of a rear case (not shown) and a glass 2, with a movement 10, a dial 11 indicating information concerning the time, a minute hand 5 indicating minutes, a seconds hand 6 indicating seconds, and a needle 41 with a timepiece function and equipped with an indicator part 42 indicating the time. The timepiece 1 according to the present embodiment is a mechanical timepiece 1 equipped, concerning, in particular, the display of time information, with a special display mechanism 40 to achieve an improvement.
    A winding stem 8 is rotatably incorporated into a winding stem guide hole (not shown) of a main plate 20. This winding stem 8 is a timepiece component to be used to perform for example, a date correction and a time display correction (display of hours and minutes). A ring 9 located on the side of the timepiece case 3 is mounted at one end of the winding stem 8.
    The winding stem 8 is rotatably supported by the winding stem guide hole, and can be removed, for example, in two stages, in the direction of extension of the winding stem 8. The position in the direction of extension of the winding stem 8 is determined by a switching device (not shown) such that an adjusting lever, a rocker, a spring clip or the like is arranged on the rear side of the main plate 20.
    In the following description, the axis of rotation of a minute hand 5 and a seconds hand 6 is a first axis C1, while the direction orthogonal to the axial direction of the first axis C1 is called the radial direction and that the direction around the first axis C1 is called the peripheral direction. In addition, the upstream side in the clockwise direction will refer to one side in the peripheral direction, and the downstream side will refer to the other side in the peripheral direction. In addition, as seen from the axial direction, the axis passing through the first rod C1 and extending along the winding stem 8 is called the X axis; in fig. 1, the right side is called the + X side, and the left side is called the -X side. In addition, the axis passing through the first axis C1 and orthogonal to the X direction is called the Y axis; in fig. 1, the upper side is called the + Y side, and the lower side is called the -Y side. In the following description, the orthogonal X-Y coordinate system will be used as needed.
    The dial 11 as a set is formed, for example, in a hexagonal configuration, and a scale 12 indicating information on the minutes and seconds is provided at each corner portion of the main surface of the dial 11.
    The inner side in the radial direction of the scale 12 of the main surface of the dial 11 constitutes a display area 15 (corresponding to the "display portion" in the claims) carrying indicia 13 consisting of numbers from "0" to "12" indicating information about the time. In accordance with the indicia 13, the display area 15 indicates a time information of 0 hours to 12 hours a.m. or p.m.
    In the display zone 15, the indicia 13 are arranged from "0" to "12" in the direction of clockwise along the peripheral direction. In the present embodiment, as viewed from the axial direction, "0" is displayed in the area (+ X, + Y) and at a position deflected by a predetermined angle in the clockwise direction by In addition, the indices 13 from "0" are successively arranged in a clockwise spiral manner so that their distance to the first axis C1 increases gradually; the index "12" is arranged on the extrinsic side radially and on the axis + Y. In addition, the indices 13 are, to achieve an improvement, arranged in the areas where the dial 11 is hidden in a round shape, and are displayed in such a way that the numbers adjacent, peripherally, to each other are connected by a straight line.
    In the display area 15, there is provided a display mechanism 40 equipped with an indicator portion 42 used to indicate the elapsed time, and a control mechanism 50 differentiating the speed of movement of the indicator portion 42 with the time elapsed. The indicator portion 42 is moved in the display area 15 by the control mechanism 50, and indicates the indices 13 from "0" to "12", indicating time information. The display mechanism 40 equipped with the indicator portion 42 and the control mechanism 50 will be described in detail below.
    In the display area 15 of the dial 11, a date window 11a is opened by clearly indicating a number representing a date. Therefore, in the timepiece 1, it is possible to control the date in addition to the time.
    FIG. 2 is an explanatory view of the movement 10 as shown in FIG. 1 as seen from the back side (the dial side 11). In fig. 2, for ease of understanding, the dial 11 is shown as seen through. In addition, the numbers and lines displayed on the dial 11, the date window 11 formed in the dial 11, and a date indicator now a plate 29 are illustrated by dashed lines. The minute hand 5 and the second hand 6 (see Fig. 1) are omitted.
    FIG. 3 is a sectional view of the movement shown in FIG. 2. In fig. 3, the inner main plate side surface 20 of the dial 11 constitutes a limit; the portion on the main plate side 20 of the inner surface of the dial 11 is a sectional view taken along the line A-A1 of FIG. 2; and the opposite side to the main plate 20 from the inner surface of the dial 11 is a sectional view taken along the line A-A2 of FIG. 2.
    As shown in FIG. 2, the movement 10 has the main plate 20 constituting the base plate of the movement 10. On the front surface of the main plate 20, at least one exhaust mechanism / regulator (not shown) including a balance with a spiral spring, an escape mobile, a pallet fork, etc. and a front wheel (not shown) including a second wheel, a third wheel, a center wheel and a movement barrel are arranged.
    As shown in FIG. 3, on the dial side 11 of the main plate 20, at least one rear wheel including a minute indicator 17, a minute wheel 18 and a hour wheel 21, a date indicator 30, a first intermediate date wheel 24 a second date intermediate wheel 25, a date indicator drive wheel 26, a date finger 27 and a date jumper 28 (see Fig. 2) are arranged. In addition, on the rear side of the main plate 20, a date indicator holding plate 29 pressing the date indicator 30, the first intermediate date wheel 24, the second intermediate date wheel 25, the driving wheel date indicator 26, the date finger 27 and the date jumper 28 (see Fig. 2) are mounted. On the rear side of the date indicator holding plate 29, the dial 11 is arranged to be visible through the lens 2 (see Fig. 1).
    The second mobile, the minute indicator 17, and the hour wheel 21 are each arranged coaxially with the first axis C1. Among these, the minute indicator 17 is configured to rotate in one hour by the rotation of the movement cylinder by the rotation of the center mobile and the third mobile. In addition, the minute hand 5 is mounted to this minute indicator 17. The second handpiece is configured to rotate in one minute by the rotation of the center mobile and the third mobile. In addition, the second hand 6 is mounted on a second rod 16 extending from the second mobile along the first axis C1.
    The hour wheel 21 is configured to rotate in 12 hours by the rotation of the minute indicator 17 and the minute wheel 18. The distal end side of the hour wheel 21 is formed as a small diameter cylinder portion 21a, and its proximal end side is formed as a large diameter cylinder portion 21b. A cam 51 constituting the control mechanism 50 described below is mounted externally on the small diameter cylinder portion 21a. In addition, a gear piece 56 constituting the control mechanism 50 described below is mounted externally on the large diameter cylinder portion 21b.
    As shown in FIG. 2, the date indicator 30 is rotatably mounted on the main plate 20; as a set, it is a ring-like element. The date indicator 30 has a plurality of inner teeth 30a along the inner peripheral edge of the opening. On the main surface of the date indicator 30 on the back side of the movement 10 (i.e., the dial side 11), date letters indicating the dates from the first to the thirty-first day are displayed . In fig. 2, only a portion of the date letters displayed on the date indicator 30 are shown.
    As shown 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 being rotatably mounted by the main plate 20.
    The date indicator driving wheel 26 is a timepiece component configured to perform a date advancement by turning the date indicator 30 once a day (at the time 0 o'clock has been reached). by a quantity corresponding to a date; it is configured to rotate counterclockwise in 24 hours on the basis of the rotation of the hour wheel 21, the first intermediate date wheel 24, and the second intermediate date wheel 25. On the rear side (the dial side 11) of the date indicator drive wheel 26, the date finger 27 capable of engaging with the inner teeth 30a of the date indicator 30 is formed. When the date indicator drive wheel 26 rotates counterclockwise, the date finger 27 is engaged with the inner teeth 30a of the date indicator 30. Therefore, the Rotational force of the date indicator drive wheel 26 is transmitted to the inner teeth 30a of the date indicator 30 by the date finger 27. And, the date indicator drive wheel 26 turns the date indicator 30 counterclockwise until a date for its rotation.
    The first intermediate date wheel 24 has on the rear side (the dial side 11) of the plate now a date indicator 29 a driving toothing 24a. The driving toothing 24a meshes with a gear piece 56 during the formation of a cam follower unit 55 described below, and increases the rotational speed of the gear piece 56 during the transmission of the force. driving the hour wheel 21 to the gear piece 56.
    As shown in FIG. 2, a date jumper 28 is a timepiece component adjusting the position, in the direction of rotation, of the date indicator 30; it is equipped with a spring jumper spring portion 28a capable of elastic deformation, whose proximal end is attached to the rear side of the main plate 20 and whose distal end is a free end. An engaging portion 28b is provided at the distal end of the spring jumper spring portion. The engagement portion 28b of the date jumper 28 is pushed toward the inner teeth 30a of the date indicator 30 by the spring jumper spring portion 28a, and is formed to be able to engage with the internal teeth 30a of the date indicator 30. The engagement portion 28b is engaged with the internal teeth 30a of the date indicator 30. The date jumper 28 sets the rotation of the date indicator 30 Display Mechanism [0053] Next, the display mechanism 40 will be described in detail.
    The display mechanism 40 is equipped with the indicator part 42 to indicate the information concerning the time and the elapsed time, and the control mechanism 50 differentiating the speed of displacement of the indicator portion 42 as a function of time. expired. In addition, the control mechanism 50 is equipped with a cam 51 having the first axis C1 as the axis of rotation, and a cam follower unit 55 rotating in the circumferential direction of the cam 51.
    As shown in FIG. 3, the cam 51 is inserted externally into the small diameter cylinder portion 21a of the hour wheel 21 such that the first axis C1 constitutes the axis of rotation. The cam 51 is urged to abut a stepped portion provided at the boundary between the small diameter cylinder portion 21a and the large diameter cylinder portion 21b of the hour wheel 21 to be adjusted in this manner in the axial direction. and is prevented from being detached in the axial direction by a rest plate 22 inserted externally to the small diameter cylinder portion 21a from the rearward side of the movement 10. The cam 51 rotates clockwise around the first axis C1 with the hour wheel 21, at the same rotational speed as the hour wheel 21, that is to say at the speed of a rotation in 12 hours.
    As shown in FIG. 2, the outer peripheral surface of the cam 51 is formed by a main cam surface 52 whose distance to the first axis C1 increases spirally when going clockwise (from one side to the other side in the peripheral direction), and a stepped surface 54 connecting a position on the main cam surface 52 where the radius from the first axis C1 is minimal and a position where the radius from it is maximum.
    The main cam surface 52 is formed by a plurality of sub-cam surfaces 53. 12 sub-cam surfaces 53 arranged in the peripheral direction in relation to the indicia 13 ranging from 1 hour to 12 hours (0 hours). ) are planned. Each of the plurality of sub-cam surfaces 53 is formed as a concave surface having a predetermined radius of curvature as seen from the axial direction. In the present embodiment, the plurality of sub-cam surfaces 53 are formed to be changed gradually in radius of curvature in the peripheral direction.
    Cam Follower Unit [0058] A cam follower unit 55 is formed primarily of a gear piece 56, an arm 58, a lever 60, and a needle 41.
    As shown in FIG. 3, the gear piece 56 is inserted externally on the large-diameter cylinder portion 21b of the hour wheel 21 by a tubular member 57. The gear piece 56 is capable of relative rotation with respect to the wheel hours 21.
    The end end side plate 20 of the gear piece 56 is a toothing 56a. The toothing 56a meshes with a driving toothing 24a of the first intermediate date wheel 24. Therefore, the gear piece 56 transmits the driving force of the hour wheel 21 by the driving toothing 24a, and is increased in the speed of rotation. In the present embodiment, the gear piece 56 rotates at a speed equal to twice the speed of rotation of the hour wheel 21, and performs two rotations in 12 hours.
    The side of the gear piece 56 opposite the toothing 56a is formed as a tubular portion 56b.
    The arm 58 has a main arm body 58a extending in the radial direction, and the inner side end in its radial direction is inserted externally to the tubular portion 56b of the gear piece 56. The arm 58 rotates clockwise about the first axis C1, with the gear piece 56, at the same rotational speed as the gear piece 56, i.e. at the rate of two rotations in 12 hours.
    On the outer side of the intermediate portion in the radial direction of the arm 58, the lever 60 is pivoted by an element 59 mounted on the arm 58.
    As shown in FIG. 2, the lever 60 is formed to extend during curvature towards the cam 51 from the portion pivoted by the member 59. At one end on the inner side in the radial direction of the lever 60, a portion forming The hook-shaped cam follower 61 is formed in sliding contact with the main cam surface 52 and the sub-cam surfaces 53.
    At the other end on the outer side, in the radial direction, of the lever 60, a gear lever gear 62 is formed. The gear lever gear 62 is formed in a sector shape having the element 59 at its center, and has a plurality of teeth on its outer peripheral surface.
    In the lever 60, the cam follower portion 61 is urged constantly toward the cam 51, with a predetermined thrust force by a needle gear teeth 43 by a return spring 46 provided on the cam Needle 41. As a return spring 46, a helical torsion spring is, for example, used.
    At the outer side end in the radial direction of the arm 58, the needle 41 is supported so as to be rotatable about a second axis C2, by a needle rod member 44 mounted on the arm 58.
    The needle 41 is formed to extend from a cylinder portion 43a of the needle gear teeth 43.
    The indicator portion 42 is formed at one end on the opposite side of the rotated portion of the needle 41. The indicator portion 42 is formed in a ring-shaped configuration, its inner diameter being larger than the contour. Therefore, it is possible to display each number forming one of the indicia 13, in the indicator portion 42 formed in a ring-shaped configuration.
    On the opposite side of the indicator portion 42 of the needle 41 and at the other end corresponding to the rotated portion of the needle 41, the needle gear teeth 43 form a gear with the gear teeth. In other words, the lever 60 and the needle 41 are connected together by transmission means 35 formed by the lever gear teeth 62 and the needle gear teeth 43.
    The cam 51 and the cam follower unit 55 formed as described above rotate about the first axis C1 by the rotation of the hour wheel 21 by the rotation of the motion cylinder, not shown, the indicator of minutes 17, and minute wheel 18.
    More specifically, the cam 51 rotates clockwise at a rotational speed of a rotation in 12 hours, and the cam follower unit 55 rotates clockwise in a clockwise direction. shows at a rotation speed of two rotations in 12 hours. In addition, the lever 60 of the cam follower unit 55 moves around the cam member 51 in the clockwise direction, with the arm 58, in contact with the main cam surface. 52 and the sub-cam surfaces 53, with the cam follower portion 61 pushed toward the cam 51.
    At this time, the plurality of camming surfaces 53 is formed in a concave configuration, so that the cam follower portion 61 of the lever 60 moves around the cam member 51 along the cam. a plurality of sub-cam surfaces 53 when moving in the direction and from the first axis C1. In addition, due to the movement of the cam follower portion 61 of the lever 60 with the rotation of the cam follower unit 5, the lever 60 rotates around the cam 51 during tilting.
    In addition, the energy due to the tilting of the lever 60 is transmitted to the needle 41 by the transmission means 35 formed by the lever gear teeth 62 and the needle gear teeth 43. Therefore, the needle 41 displays indicia 13 consisting of the numbers from 0 to 12 indicating time-related information on the inner side of the indicator portion 42 when rotating about the cam 51 in a clockwise direction. of a watch during the rotation around the second axis C2.
    Here, the tilting frequency of the lever 60 and the frequency of change of the tilting speed in the present embodiment depend on the configuration of the curved surface of the sub-cam surfaces 53. More specifically, the higher the frequency in the radial direction of the camming surfaces 53 is large, the tilting frequency of the lever 60 is large and the frequency of change of speed can be made.
    In addition, the tilting frequency of the needle 41 depends on the ratio of the number of teeth of the needle gear teeth 43 to the number of teeth of the toothing gear teeth 62 in addition to the Lever down frequency 60 (i.e., the configuration of the sub-cam surfaces 53). More specifically, by making the tooth ratio of the toothing gear teeth 62 larger than the number of teeth of the needle gear teeth 43, it is possible to increase the tilt frequency during the rotation of the needle 41 to increase the tilting frequency of the indicator portion 42; and, by making the tooth ratio of the toothing gear teeth 62 smaller than the number of teeth of the needle gear teeth 43, it is possible to decrease the tilting frequency during the rotation of the gear teeth. the needle 41 to decrease the tilting frequency of the indicator portion 42.
    In the present embodiment, at the moment of movement between the numbers of the indicia 13, the configuration of the curved surface of the sub-cam surfaces 53, and the ratio of the number of teeth of the gear teeth to needle 43 on the number of teeth of the gear lever gear 62, are adjusted so that the indicator portion 42 performs a linear motion path.
    Actuation [0078] FIGS. 4 to 16 are explanatory views of the display mechanism 40; these are explanatory views indicating predetermined hours. In figs. 4 to 16, the minute hand 5, the second hand 6, the return spring 46, etc. (see Fig. 1) are omitted.
    Then, the operation of the display mechanism 40 according to the present embodiment will be described.
    As shown in FIG. 4, in the initial state in which the indicator portion 42 indicates "0" among the indices 13 (i.e., 0 hours), the stepped surface 54 of the cam 51 is arranged at the initial position in the zone (-X, -Y). In addition, the arm 58 of the cam follower unit 55 is arranged at the initial position in the area (-X, + Y). Further, the cam follower portion 61 of the lever 60 of the cam follower unit 55 is adjacent the stepped surface 54 and is in contact with a first sub-cam surface 53a located radially deep within the plurality of sub-cam surfaces 53.
    Then, with the passage of time, the cam 51 and the cam follower unit 55 rotate about the first axis C1. At this time, the cam 51 rotates clockwise at a rotational speed of one rotation in 12 hours, and the cam follower unit 55 rotates clockwise to a rotational speed of two rotations in 12 hours. Thus, the cam follower portion 61 of the cam follower unit 55 rotates relative in the peripheral direction about the cam 51, and moves in sliding contact with the first camming surface 53a.
    In this context, the first cam surface 53a is formed in a concave configuration. Thus, the cam follower portion 61 moves around the cam 51 along the first camming surface 53a as it moves toward and away from the first axis C1. Therefore, due to the movement of the cam follower portion 61 of the lever 60 accompanying the rotation of the cam follower unit 55, the lever 60 rotates around the cam 51 during tilting.
    In addition, the energy due to the tilting of the lever 60 is transmitted to the needle 41 by the transmission means 35 formed by the lever gear teeth 62 and the needle gear teeth 43. Therefore, the needle 41 rotates clockwise around the cam 51 as it rotates about the second axis C2. Here, in the present embodiment, the configuration of the curved surface of the sub-cam surfaces 53 and the ratio of the number of teeth of the needle gear teeth 43 to the number of teeth of the gear teeth. Lever 62 is adjusted so that the indicator portion 42 performs a linear motion path between the indices 13 of the different numbers. Thus, the indicator portion 42 moves linearly between the indices 13 for "0" and "1." [0084] After that, as shown in FIG. 5, when one hour has elapsed since the beginning of the actuation, the cam 51 rotates clockwise 30 degrees from the initial position, and the stepped surface 54 moves towards the zone (- X, + Y). In addition, the arm 58 of the cam follower unit 55 rotates clockwise 60 degrees from the home position to move to the (+ X, + Y) area. Further, the cam follower portion 61 of the lever 60 of the cam follower unit 55 contacts the boundary portion between the first camming surface 53a and the second camming surface 53b. And, the indicator portion 42 of the needle 41 indicates the index 13 for "1".
    With the passage of time, the cam 51 and the cam follower unit 55 continue an actuation similar to that described above. At this time, the cam follower portion 61 of the lever 60 moves in sliding contact with the main cam surface 52. Thus, with the elapsed time, the cam follower portion 61 of the lever 60 is arranged on the radially outer side of the initial position in which it has been in contact with the first sub-cam surface 53a. Therefore, as time passes, the lever 60 rotates from the initial position clockwise about the member 59 in a rotational manner.
    In addition, the indicator portion 42 of the needle 41 is moved radially to the outer side of the initial position as the lever 60 makes a rotational movement from the initial position. Therefore, the indicator portion 42 of the needle 41 moves radially to the outer side during clockwise rotation by differentiating the moving speed, so that it is possible to indicate the indices 13 of "1" arranged from the front in spiral to be increased gradually in the distance from the first axis C1. In fig. 6, the indicator portion 42 indicates the index 13 for "2"; in fig. 7, the indicator portion 42 indicates the index 13 for "3"; in fig. 8, the indicator portion 42 indicates the index 13 for "4"; and in fig. 9, the indicator portion 42 indicates the index 13 for "5".
    And, as shown in FIG. 10, when six hours have elapsed since the beginning of the actuation, the cam 51 rotates from the initial position 180 degrees clockwise, and the stepped surface 54 moves towards the zone (+ X, + Y). In addition, the arm 58 of the cam follower unit 55 rotates from the initial position clockwise 360 degrees to move to the same position as the initial position in the (-X, + Y). Further, the cam follower portion 61 of the lever 60 of the cam follower unit 55 contacts the boundary portion between the sixth camming surface 53c and the seventh camming surface 53d.
    With the passage of time, the cam 51 and the cam follower unit 55 continue the rotational movement. Therefore, the indicator portion 42 indicates the indicia 13 from "6" ahead. In fig. 11, the indicator portion 42 indicates the index 13 for "7"; in fig. 12, the indicator portion 42 indicates the index 13 for "8"; in fig. 13, the indicator portion 42 indicates the index 13 for "9"; in fig. 14, the indicator portion 42 indicates the index 13 for "10"; and in fig. 15, the indicator portion 42 indicates the index 13 for "11".
    Then, as shown in FIG. 16, when 12 hours have elapsed since the start of the actuation, the cam follower portion 61 of the lever 60 is arranged at a position which is at the boundary portion between the main cam surface 52 and the stepped surface 54 and which is the furthest radially outward from the first axis C1. At this time, the lever 60 is rotatably displaced from the initial position clockwise around the member 59 at a maximum angle. And, with the rotational movement of the lever 60, the indicator portion 42 of the needle 41 moves to a furthest position radially outward, making it possible to indicate the index 13 for "12." [ 0090] Then, when 12 hours have elapsed since the start of the actuation, the cam follower portion 61 of the lever 60 moves radially inwardly along the stepped surface 54, and as shown in fig. 4, is arranged at the first sub-cam surface 53a, which is the initial position. Further, with the movement of the cam follower portion 61, the lever 60 rotates counterclockwise about the member 59. And, with the rotation of the lever 60, the indicator portion 42 of the needle 41 moves to the furthest position radially, making it possible to indicate the index 13 for "0" again.
    From this moment, the above operation is repeated, according to which it is possible for the indicator part 42 to repeatedly indicate the indices 13 of "0" to "12" by returning a trajectory of complicated movement.
    According to the present invention, there is provided the control mechanism 50 differentiating the speed of displacement of the indicator portion 42, so that it is possible for the indicator part to perform a complicated trajectory by means of a structure simple, making it possible to achieve an improvement of the display mechanism 40.
    In addition, the control mechanism 50 is formed by the cam 51 of the axis of rotation of which it is the first axis C1, and the cam follower unit 55 rotating in the peripheral direction of the cam 51, so that it is possible to achieve a simple structure of a small number of components. Further, the cam follower unit 55 is equipped with the lever 60 having at its end the cam follower portion 61 engaging the cam 51 and rotating in the peripheral direction about the cam 51 while tilting with the rotation, so that it is possible to arbitrarily adjust the tilting frequency of the lever 60 by changing the configuration of the outer peripheral surface of the cam 51. In addition, by changing the relative speed of movement of the part As a cam follower 61 relative to the cam 51, it is possible to arbitrarily adjust the tilting speed of the lever 60. In addition, the needle 41 is supported to be rotatable about the second axis C2, and the other end of the lever 60 and the other end of the needle 41 are connected by the transmission means 35 formed by the gearing gear lever 62 and the needle gear teeth 43, d It is possible for the needle 41 to rotate in the circumferential direction around the cam 51 by rotating about the second axis C2 as a function of the tilting frequency of the adjustment and the tilting speed of the lever 60. thus, the movement path of the indicator portion 42 of the needle 41 can be determined in a desired manner based on the configuration of the outer peripheral surface of the cam 51 and the relative speed of movement of the follower portion cam 61 relative to the cam 51, so that a complicated path can be made to the indicator portion 42 by means of a simple structure, making it possible to improve the display mechanism 40.
    In addition, the transmission means 35 are formed by the needle gear teeth 43 and the lever gear teeth 62, so that by effecting a change in the ratio between the number of teeth of the needle 43 and the number of teeth of the gear lever gear 62, which mesh with each other, it is also possible to make a complicated trajectory to the indicator portion 42, making it possible to achieve An improvement in the display mechanism 40. In particular, by making the number of teeth of the toothing gear teeth 62 larger than the number of teeth of the needle gear teeth 43, it is possible to increase the tilting frequency of the needle 41 during rotation and to increase the tilting frequency of the indicator portion 42; and, by making the ratio of the number of teeth of the lever gear teeth 62 smaller than the number of teeth of the needle gear teeth 43, it is possible to decrease the tilting frequency of the gear teeth. during rotation and decrease the tilting frequency of the indicator portion 42. In this way, in addition to the configuration of the outer peripheral surface of the cam 51 and the relative speed of movement of the cam follower portion 61 with respect to the cam 51, the ratio of the number of teeth of the needle gear teeth 43 to the number of teeth of the lever gear teeth 62 is changed, whereby the trajectory can be determined. movement of the indicator portion 42 of the needle 41 in a desired manner, so that it is possible to cause a complicated trajectory to be made to the indicator portion 42 by means of a simple structure, making possible a e improvement of the display mechanism 40.
    In addition, the main cam surface 52 is formed by a plurality of sub-cam surfaces 53 moving the cam follower portion 61 of the lever 60 alternately toward the first axis C1 and in the opposite direction to that in that, by changing the configuration of the sub-cam surfaces 53, it is possible to adjust the tilting frequency of the lever 60 when the cam follower portion 61 of the lever 60 rotates about the cam 51 being in contact with the main cam surface 52 of the cam 51. Thus, it is possible for the movement path of the indicator portion 42 to be, for example, curved or linear, so that it is possible to make perform a desired trajectory.
    In addition, the cam 51 and the cam follower unit 55 rotate in the same direction from one side towards the other side in the circumferential direction about the first axis C1, and the follower unit of FIG. The cam 55 rotates at a higher speed than the cam 51, so that it is possible to cause the cam follower unit 55 to rotate relative to the cam 51. In addition, when the cam 51 rotates, the cam follower unit 55 makes a plurality of turns around the cam 51, wherein it is possible for the movement path of the indicator portion 42 to be of a spiral configuration exhibiting a plurality corresponding to the number of revolutions of the cam follower unit 55. In this way, it is possible to change the number of revolutions of the spiral motion path as a function of the rotational speed of the cam rate 51 and the cam follower unit 55, of it is possible to perform a complicated path to the indicator portion 42 by means of a simple structure, enabling improved display mechanism 40.
    In addition, the cam 51 is mounted at the hour wheel 21 by rotating in 12 hours, so that it is possible to make the trajectory to the indicator portion 42, with 12 hours constituting a cycle. Therefore, it is appropriate when using the indicator portion 42 as the hour hand. In addition, the rotational speed of the cam follower unit 55 is twice the rotational speed of the cam 51, so that the number of revolutions of the spiral motion path can be two or more.
    In addition, because of the arrangement of the display mechanism 40 described above, it is possible to obtain a movement 10 and a timepiece 1 which are higher and in which it is possible to make perform a complicated trajectory to the indicator portion 42 by means of a simple structure.
    First Modification of the Embodiment [0099] Next, the display mechanism 40 according to a first modification of the embodiment will be described.
    FIG. 17 is an explanatory view of the display mechanism 40 according to the first modification of the embodiment.
    In the display mechanism 40 of the above embodiment, the cam 51 has the main cam surface 52, a plurality of sub-cam surfaces 53, and the stepped surface 54, and the follower portion. cam 61 moves in sliding contact with the main cam surface 52 and the plurality of cam surfaces 53 (see Fig. 1).
    In contrast, as shown in FIG. 17, the display mechanism 40 according to the first modification of the embodiment differs from the above embodiment in that a cam 151 is provided with a main cam groove portion 152, a plurality of groove portions. a cam follower 153, and a stepped groove portion 154, with a cam follower portion 161 moving along the cam main groove portion 152, the plurality of cam follower grooves 153, and the Stepped groove portion 154. In the following, a description of the components that are the same as those of the above embodiment will be omitted, and the description will be focused on the differences.
    The main cam groove portion 152 is formed, for example, in the main surface of a spiral disc disk member in a clockwise spiral (from one side to the other side in the peripheral direction) to increase in the radial distance from the main axis C1. The main cam groove portion 152 is formed by providing the plurality of (twelve) sub-cam groove portions 153 formed to be radially inwardly bent in the circumferential direction. The stepped groove portion 154 is formed by connecting the position where the radius of the main cam groove portion 152 as measured from the first axis C1 is minimal with the position where the radius is maximum.
    In addition, the cam follower portion 161 of the lever 60 is formed by a protuberance 161a capable of moving along the main cam groove portion 152 and the cam follower portions 153. The protrusion 161a is formed to protrude towards the cam 151 along the axial direction from, for example, one end radially on the inner side of the lever 60. Arranging the protuberance 161a in the main cam groove portion 152 the cam 151 rotates in a clockwise direction at a rotational speed of one rotation in 12 hours; and, when the cam follower unit 55 rotates clockwise at a rotational speed of two rotations in 12 hours, the cam follower portion 161 can move along the groove portion the camming member 152 and the plurality of sub-cam groove portions 153. Therefore, the indicator portion 42 of the needle 41 operates in the same manner as in the above embodiment, making it possible to indicate the indices 13.
    According to the first modification of the embodiment, it is possible to form the cam 151 easily and at low cost. Further, the cam follower portion 161 of the lever 60 is formed by the protuberance 161a movable along the main cam groove portion 152, the sub camming groove portions 153, and the stepped groove portion 154, so that, only by arranging the protrusion 161a of the lever 60 in a between the main cam groove portion 152, the sub camming groove portions 153, and the stepped groove portion 154, the cam follower portion 161 can move along the main cam groove portion 152, the sub camming groove portions 153, and the stepped groove portion 154. Thus, there is no need, for example, to provide an element the thrust spring 46 in the embodiment, see Fig. 1) to urge the cam follower portion 161 toward the cam 151 so that the cam follower portion 161 can engage contact with the cam 151, so that it is possible to further simplify the structure of the display mechanism 40 and achieve a cost reduction.
    Second Modification of the Embodiment [0106] Next, the display mechanism 40 according to a second modification of the embodiment will be described.
    [0107] FIG. 18 is an explanatory view of the display mechanism 40 according to the second modification of the embodiment.
    In the display mechanism 40 according to the embodiment, the outer peripheral surface of the cam 51 is formed by the main cam surface 52 spirally formed to gradually increase in diameter by arranging a plurality of sub-cam 53 of a concave configuration of the curved surface in the peripheral direction, and the stepped surface 54 connecting the position where the radius from the first axis C1 is minimal with the position where the radius is maximum (see Fig. 1) .
    In contrast, as shown in FIG. 18, the display mechanism 40 according to the second modification of the embodiment differs from that of the embodiment in that the outer peripheral surface of a cam 251 is formed by a main cam surface 252 equipped with two sub surfaces. convex cams 253a and 253b. In the following, a description of the components that are the same as those of the embodiment will be omitted, and the description will focus on the differences.
    The main cam surface 252 of the cam 251 is formed by the two convex sub-cam surfaces 253a and 253b in a heart-shaped configuration as viewed from the axial direction. Of the two boundary portions of the two sub-cam surfaces 253a and 253b, a boundary portion is formed as a deepest portion 254a at a minimum distance from the first axis C1, and the other boundary portion is formed as a extrinsic portion 254b at the maximum distance from the first axis C1. In fig. 18, the deepest portion 254a is arranged in the area (+ X, + Y), and the extrinsic portion 254b is arranged in the area (-X, -Y). Further, the cam follower portion 61 of the lever 60 is located on the extrinsic portion 254b of the main cam surface 252, and is arranged at the outermost radially spaced position from the first axis C1. At this time, with the rotational movement of the lever 60, the indicator portion 42 of the needle 41 is moved radially to the extrinsic side, and indicates the index 13 for "12." In the display area 15, the indicia 13 are arranged from "1" to "12" sequentially clockwise in the circumferential direction. In the present embodiment, the index 13 for "1" is displayed in the area (+ X, + Y) and at a position deviated by a predetermined angle in the direction of clockwise from the X axis as seen from the axial direction. The indices 13 of "1" to "6" are arranged sequentially in the clockwise direction to be decreased gradually in the distance from the first axis C1. The indicia 13 of "7" to "12" are sequentially clockwise to be incrementally increased in the distance from the first axis C1. The indices 13 from "3" to "9" are displayed at the same position.
    Operation of the Display Mechanism According to the Second Modification of the Embodiment Next, operation of the display mechanism 40 according to the second modification of the present embodiment will be described. In the following, the actuation when the indicator portion 42 constituting the display mechanism 40 starts the actuation at 12 o'clock, and again displays the 12 o'clock time to complete the actuation, will be described sequentially.
    In the initial state in which the indicator portion 42 displays the index 13 for "12" (that is to say, the hour of 12 hours or 0 hours), the extrinsic portion 254b of the cam 251 is arranged at the initial position in the area (-X, -Y). The arm 58 of the cam follower unit 55 is arranged at the initial position in the area (-X, + Y). Further, the cam follower portion 61 of the lever 60 of the cam follower unit 55 is in the area (-X, -Y) and is in contact with the extrinsic portion 254b of the main cam surface 252.
    With the passage of time, the cam 251 and the cam follower unit 55 rotate around the first axis C1. At this time, the cam 251 rotates clockwise at a rotational speed of one rotation in 12 hours, and the cam follower unit 55 rotates clockwise to a rotational speed of two rotations in 12 hours. Therefore, the cam follower portion 61 of the cam follower unit 55 rotates relative in the circumferential direction of the cam 251, and moves toward the deepest portion 254a while in sliding contact with the cam follower first sub-cam surface 253a.
    Herein, the first sub-cam surface 253a is formed to be gradually reduced in the distance from the first axis C1 as it extends from the extrinsic portion 254b toward the deepest portion 254a. As a result, the cam follower portion 61 moves around the cam 251 by gradually approaching the first axis C1 along the first camming surface 253a. As a result, the lever 60 rotates around the cam 251 by swinging by the movement of the cam follower portion 61 of the lever 60 accompanying the rotation of the cam follower unit 55. At this time, the indicator portion 42 moves gradually and radially inward by turning clockwise.
    In addition, the energy due to the tilting of the lever 60 is transmitted to the needle 41 by the transmission means 35 formed by the lever gear teeth 62 and the needle gear teeth 43. Therefore, the needle 41 rotates clockwise about the cam 251 by rotating about the second axis C2. Here, in the present embodiment, the curved surface configuration of the sub-cam surfaces 253a and 253b and the ratio of the number of teeth of the needle gear teeth 43 to the number of teeth of the teeth of Lever gear 62 is adjusted so that the indicator portion 42 performs a slightly arcuate trajectory between the indicia 13 of the different numbers. Thus, the indicator portion 42 of the needle 41 moves in an arcuate manner between the indicia 13 for "12" and "1." The indicator portion 42 displays the indicia 13 for "1" inwardly as shown in FIG. moving radially inward by turning clockwise as time passes.
    And, when six hours have elapsed since the beginning of the actuation, the cam 251 rotates 180 degrees clockwise from the initial position, and the deepest portion 254a moves toward a position which is in the zone (-X, -Y) and which corresponds to the initial position of the extrinsic part 254b. In addition, the arm 58 of the cam follower unit 55 rotates 360 degrees clockwise from the home position, and moves to a position that is the same as the initial position in the area. (-X, + Y). Further, the cam follower portion 61 of the lever 60 of the cam follower unit 55 contacts the deepest portion 254a. At this time, the cam follower portion 61 of the lever 60 is arranged at a position closest to the first axis C1 radially inwardly. Thus, with the rotational movement of the lever 60, the indicator portion 42 is moved to the deepest side radially, and displays the index 13 for "6." After six hours have passed since the beginning of upon actuation, the cam follower portion 61 of the cam follower unit 55 rotates relative in the circumferential direction of the cam 251 with the passing time, and moves toward the extrinsic portion 254b while being in sliding contact with the second sub-cam surface 253b. At this time, with the passage of time, the indicator portion 42 displays the index 13 for "6" by moving radially outwardly by turning clockwise.
    And when 12 hours have elapsed since the start of the actuation, the cam 251 has rotated, and the cam follower unit 55 has made two rotations, with the cam follower portion 61 of the lever 60 being located on the extrinsic portion 254b of the main cam surface 252 again. At this time, with the rotational movement of the lever 60, the indicator portion 42 of the needle 41 moves radially toward the extrinsic side, and displays the index 13 for "12" again.
    From this moment, the actuation above is repeated, according to which the indicator portion 42 can display the indices 13 of "1" to "12" by returning in addition a complicated motion trajectory different from that in the mode. of realization.
    The technical scope of this invention is not restricted to that of the above embodiment but allows various modifications without departing from the spirit of the invention.
    When in the display mechanism 40 of the embodiment and modifications of the embodiment, the cam 51,151,251 rotates in a clockwise direction at a rotational speed of one rotation in 12 hours, and the cam follower unit 55 rotates clockwise at a rotational speed of two rotations in 12 hours, the rotational speed of the cam 51 and the cam follower unit 55 are not restricted to that. For example, the cam 51, 151, 251 is rotatable clockwise at a rotational speed of one rotation in 12 hours, where the cam follower unit 55 can rotate clockwise. a watch with a speed of rotation of three rotations in 12 hours. In this case, it is possible to make the trajectory to the indicator portion 42 to make three turns around the first axis C1. In this way, the rotational speed of the cam 51, 151,251 and that of the cam follower unit 55 vary, according to which it is possible to make a desired motion path to the indicator portion 42.
    When in the display mechanism 40 of the embodiment each sub-cam surface 53 is formed in a concave configuration exposing a predetermined curvature as viewed from the axial direction, the configuration of the sub-cam surfaces 53 does not occur. is not restricted to that of the embodiment. For example, each sub-cam surface 53 may be formed in a convex configuration exhibiting a predetermined curvature, or in a curved configuration, or in a flat configuration as viewed from the axial direction. In addition, the plurality of sub-cam surfaces 53 may be formed in different configurations. By thus varying the configuration of the sub-cam surfaces 53, it is possible for the indicator portion 42 to cause a desired trajectory to be made.
    While, in the display mechanism 40 of the embodiment and each modification of the embodiment, the transmission means 35 transmitting the energy of the lever 60 to the needle 41 are formed by the teeth of FIG. With the lever gear 62 and the needle gear teeth 43, the shape of the transmission means 35 is not restricted to that of the embodiment and each modification of the embodiment. For example, it is also possible to form the transmission means 35 by connecting the lever 60 and the needle 41 by a belt and a pulley.
    When in the display mechanism 40 of the embodiment and each modification of the embodiment the indicator portion 42 is formed in a ring-shaped configuration, and each number of indicia 13 is displayed in the portion 42, the configuration of the indicator portion 42 is not restricted to that of the embodiment and each modification of the embodiment but allows various changes. Thus, it is possible, for example, to form the indicator portion 42 in a needle-like configuration.
    When in the display mechanism 40 of the embodiment and each modification of the embodiment the cam 51, 151, 251 and the cam follower unit 55 rotate, using the first axis C1 as the common axis of rotation, it is not necessary for the axis of rotation of the cam 51, 151, 251 and the axis of rotation of the follower unit 55 to be the same.
    The display mode of the indicia 13 on the dial 11 is not restricted to that of the embodiment and each modification of the embodiment but allows various changes.
    In addition, in the display mechanism 40 of the embodiment and each modification of the embodiment the needle 41 has the hour hand function, and the indicator portion 42 indicates the time. In contrast, the needle 41 may have the second hand function, and the indicator portion 42 may indicate the seconds; the needle 41 may have the minute hand function, and the indicator portion 42 may indicate the minutes; furthermore, the needle 41 may have the day needle function, and the indicator portion 42 may indicate the day. In other words, the display mechanism 40 is not restricted to the mode displaying the time information.
    权利要求:
    Claims (9)
    [1]
    A display mechanism (40), comprising: an indicator portion (42) used to indicate the elapsed time, and a control mechanism (50) configured to differentiate the speed of movement of the indicator portion (42) according to the time elapsed; the control mechanism (50) being provided with a cam (51) having an axis of rotation, which is a first axis (C1), and a cam follower unit (55) rotating in the peripheral direction of the cam (51); the cam follower unit (55) being provided with a lever (60) having at one end a cam follower portion held in contact with the cam (51) and configured to rotate in the peripheral direction about the cam follower cam (51) while swinging with the rotation of the cam follower unit (55), and a needle (41) having at one end the indicator portion (42), the second end thereof being supported so as to being rotatable about a second axis (C2) on the outer side, in a radial direction, of the cam (51), the needle (41) rotating in the circumferential direction about the cam (51) with rotation the cam follower unit (55); and a second end of the lever (60) and the second end of the needle (41) being connected to each other.
    [2]
    2. Display mechanism (40) according to claim 1, wherein the second end of the lever (60) and the second end of the needle (41) are connected by transmission means (35).
    [3]
    A display mechanism (40) according to claim 2, wherein the transmission means (35) is formed by a needle gear set (43) formed at the second end of Paigullle (41). and a gear lever gear (62) formed at the second end of the lever (60).
    [4]
    The display mechanism (40) according to claim 2 or 3, wherein the cam (51) has a main cam surface (52) whose distance to the first axis (C1) increases as one goes from one side to the other. on the other side in the direction of the ring; and the main cam surface (52) is formed of a plurality of camming surfaces (53) moving the cam follower portion of the lever alternately toward the first axis (C1) and in the opposite direction to that -this.
    [5]
    Display mechanism (40) according to claim 2 or 3, wherein the cam (51) is equipped with a groove formed so that its distance to the first axis (C1), in the radial direction, increases when one go from one side to the other side in the direction of the ring; and the cam follower portion of the lever is formed by a protrusion movable along the groove.
    [6]
    Display mechanism (40) according to claim 4 or 5, wherein the cam (51) and the cam follower unit (55) rotate in the same direction from one side towards the other side according to the peripheral direction around the first axis (C1); and the cam follower unit (55) rotates at a higher speed than the cam (51).
    [7]
    The display mechanism (40) of claim 6, wherein the cam (51) is carried by an hour wheel (21); and the rotational speed of the cam follower unit (55) is twice the rotational speed of the cam (51).
    [8]
    8. Movement (10) of timepiece (1), comprising a display mechanism (40) according to claim 1.
    [9]
    9. Timepiece (1), comprising a movement (10) of timepiece (1) according to claim 8.
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    同族专利:
    公开号 | 公开日
    JP6282809B2|2018-02-21|
    CN104238339B|2018-06-12|
    CN104238339A|2014-12-24|
    JP2015007539A|2015-01-15|
    CH708265A2|2014-12-31|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP2013131947A|JP6282809B2|2013-06-24|2013-06-24|Display mechanism, watch movement and watch|
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