JP2007147432A - Power reserve display device and wrist watch equipped therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power reserve display device with its display area kept constant irrespective of its maximum power reserve amount and to provide a wrist watch. <P>SOLUTION: The power reserve display device 1 for a wrist watch includes: a planet wheel mechanism 3 equipped with first and second sun wheels coaxial with each other and a planet intermediate wheel, a first planet wheel rotatably supported on the planet intermediate wheel at a decentered position and meshing with a pinion part of the second sun wheel, a second planet wheel integral with the first planet wheel and meshing with the first sun wheel, and a ratchet wheel coaxial with the first sun wheel; a planetary transmission wheel for transmitting the rotation of a square hole wheel to the second sun wheel; a planet intermediate wheel forming a part of the planet intermediate wheel and meshing with a barrel wheel; a power reserve intermediate wheel meshing with the ratchet wheel and a power reserve wheel meshing with its pinion part; and a display indicator mounted on the power reserve wheel at its center. The transmission wheel 20 and the second sun wheel 40 are each coaxially equipped with a plurality of toothed wheels 22, 23, 42, and 43. In order to change meshing gear wheels of the two wheels, the center of the second sun wheel is positionally changeable in their longitudinal direction while a gear ratio is adjustable between the second planet wheel and the first sun wheel. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a power reserve display device that displays a remaining amount of a mainspring, and more particularly to a power reserve display device suitable for use in a portable small-sized watch (watch) such as a wristwatch.

  As a power reserve display device for a wristwatch, coaxial first and second solar wheels, a planetary intermediate wheel coaxial with the first solar wheel, and the second solar wheel supported rotatably by the planetary intermediate wheel at an eccentric position. First planetary gear meshed with the first planetary gear, a second planetary gear coaxially and integrally with the first planetary gear meshed with the first solar vehicle, and a planetary gear mechanism comprising a pawl wheel coaxial with the first solar vehicle A planetary transmission wheel that transmits the rotation of the square hole wheel to the second solar wheel, a planetary intermediate gear that forms part of the planetary intermediate wheel and meshes with the barrel wheel, and a winding that meshes with the pinion wheel at the gear portion. A vehicle having a mark intermediate wheel, a winding mark wheel engaged with a pinion portion of the winding mark intermediate wheel, and a display indicator attached to the true mark of the winding mark wheel is known (for example, Patent Document 1).

  For watches equipped with a power reserve display device, it is highly necessary to prepare products with different maximum power reserves (duration until the fully wound mainspring is completely unwound) according to user needs. . The maximum power reserve amount typically depends on the length of the mainspring, and becomes larger (longer) as the mainspring becomes longer. Therefore, the maximum power reserve amount itself can be changed by merely preparing a barrel having springs of different lengths without actually changing other parts.

  In this type of power reserve display device, the power reserve amount is displayed as the display pointer rotates about its rotation center axis. The display area by the display pointer is typically a fan shape. Therefore, when the mainspring is lengthened so as to increase the maximum power reserve amount, the central angle (operating angle) of the fan-shaped region increases.

However, if a large operating angle is taken, there is a possibility that it overlaps with a display area by another display means or the like, a logo mark or other mark display area. As a result, when the display area is increased, it is necessary to change the arrangement of the winding wheel itself, and there is a high possibility that it is necessary to change the arrangement of various timepiece parts including the related wheel train accordingly.
JP-A-11-183642

  The present invention has been made in view of the above-described points, and the object of the present invention is to maintain a constant display area even when the maximum power reserve amount is changed, and to change a watch part. It is an object of the present invention to provide a power reserve display device that can be minimized and a wristwatch including the same.

  In order to achieve the above object, a power reserve display device according to an aspect of the present invention includes coaxial first and second solar wheels, a planetary intermediate wheel that is coaxial with the first solar wheel, and is rotated by the planetary intermediate wheel at an eccentric position. A first planetary wheel that is freely supported and meshes with the pinion of the second solar wheel, a second planetary gear that is coaxial and integral with the first planetary wheel, and meshes with the first solar wheel, and the first solar wheel A planetary gear mechanism including a cogwheel and a planetary gear, a planetary transmission wheel that transmits rotation of the square hole wheel to the second solar wheel, and a planetary intermediate gear that is part of the planetary intermediate wheel and meshes with the barrel wheel A power reserve display device comprising: a winding mark intermediate wheel meshed with the toothed wheel at a gear portion; a winding mark wheel meshed with a pinion of the winding mark intermediate wheel; and a display pointer attached to the true winding mark wheel The planetary transmission wheel is different in diameter from the planetary transmission gear. The second sun wheel is coaxially provided with a plurality of second sun gears, and one second sun gear of the plurality of second sun gears meshes with the planetary transmission gear. The second sun gear is adjustable in the direction of extension of the central axis between the position where the second sun gear engages with the other gear portion of the planetary transmission wheel, The gear ratio between the planetary wheel and the first solar wheel can be adjusted.

  In the power reserve display device of the present invention, “the planetary transmission wheel is coaxially provided with a planetary transmission gear and another gear portion having a different diameter from the planetary transmission gear, and the second sun wheel is coaxial with a plurality of second sun gears. And a position where one second sun gear of the plurality of second sun gears meshes with the planetary transmission gear and a position where another second sun gear meshes with another gear portion of the planetary transmission wheel. Since the second solar true can be adjusted in the direction in which the central axis extends, when the maximum power reserve amount is the maximum, for example, one of the plurality of second sun gears When the second sun gear is positioned at a position where the second sun gear meshes with the planetary transmission gear and the maximum power reserve amount is reduced, for example, another second sun gear of the plurality of second sun gears is connected to the planetary transmission wheel. Another gear part (in this case, the diameter of this gear part is A second sun wheel stem in a position to mesh with the smaller) than the diameter of the vehicle may be positioned. Here, typically, the planetary transmission gear meshes with the square wheel. Actually, in order to keep the display area, that is, the operating angle of the display pointer, the same for the different maximum power reserve amount (duration), the "tooth ratio between the second planetary wheel and the first solar wheel" is set to change. Therefore, the tooth number ratio between the other second sun gear of the second sun wheel and the other gear portion of the planetary transmission wheel is adjusted according to the changed tooth number ratio.

  In the power reserve display device of the present invention, “the planetary transmission wheel is provided with a planetary transmission gear and another gear portion having a different diameter from the planetary transmission gear on the same axis”, Therefore, when changing the gear ratio between the square hole wheel and the second sun wheel, there is no need to change the positions of the planetary transmission wheel and the second sun wheel. . That is, when one planetary transmission gear meshes with both the square hole wheel and the second sun gear, the second sun wheel (or the second sun wheel and the planetary transmission gear) is used to change the number of teeth of the second sun gear. If the diameter of the wheel is changed, it is necessary to change the position of the rotation center axis of the second solar wheel (or the second solar wheel and the planetary transmission gear), and change the position to the position of the bearing holes of the main plate and various receivers. However, the power reserve display device of the present invention has a structure in which “the planetary transmission wheel includes a planetary transmission gear and another gear portion having a different diameter from the planetary transmission gear coaxially”. Therefore, it is not necessary to change the positions of the rotation center axes of the planetary transmission gear and the second sun gear, and it is not necessary to change the positions of the main plate and the bearing holes of various receivers. Note that changing the ratio of the number of teeth of the second planetary wheel and the first sun wheel requires only changing the number of teeth and the diameter of both gears, so it is necessary to change the position of the bearing holes of the base plate and various receivers. Absent. The other gear portion of the planetary transmission wheel typically includes a small gear (kana), that is, a planet transmission pinion, but may be a gear portion having a larger diameter than the planetary transmission gear in some cases.

  In the power reserve display device according to the present invention, for example, it is conceivable to simply change the gear ratio between the winding mark intermediate pinion and the winding mark gear. However, such changes are not practical for the reasons described below.

  That is, in a wristwatch, the diameter of the intermediate kana is usually smaller than 0.5 mm, for example, about 0.3 mm, and the number of teeth is usually 10 or less, for example, about 8. Accordingly, the change in the number of teeth at the middle of the winding mark is limited to one or two at most, and it is generally difficult to make such a change rate coincide with the change rate of the maximum power reserve amount. As a result, there is a risk that the maximum power reserve amount may have to be set to an unnatural size that matches the change ratio of the number of teeth ratio between the winding mark intermediate pinion and the winding mark gear accompanying the change in the number of teeth of the winding mark intermediate pinion. There is also. Therefore, it is difficult to achieve the above object by changing the gear ratio between the winding mark intermediate pinion and the winding mark gear.

  Further, in the power reserve display device as in the present invention, for example, it is conceivable to change the reduction ratio between the ratchet wheel and the winding mark intermediate gear. However, this change is also impractical for the reasons described below.

  That is, in the wristwatch, the diameter of the winding mark intermediate gear is, for example, about 1.2 mm, and the number of teeth is about 10. On the other hand, in order to ensure intermittent intermittent rotation of the winding mark intermediate gear by the pawl of the ratchet wheel, it is indispensable to elastically press a jumper that regulates the rotation position of the winding mark intermediate gear between adjacent teeth of the intermediate gear. It is. In consideration of securing the operation area of the jumper, that is, the swinging area by elastic deformation, it is not easy to increase the number of teeth of the winding intermediate gear. In addition, since the number of pawls of the pawl wheel is originally small (for example, about 2), further reducing or increasing the number of pawls will cause large fluctuations such as halving or doubling 1.5 times. In many cases, it is difficult to change the maximum power reserve amount of about several tens of percent.

  For example, when three types of maximum power reserve of 48 hours, 60 hours, and 72 hours can be provided, the ratio of the number of teeth needs to be changed at 4: 5: 6. The small power reserve display mechanism of a wristwatch makes it possible to make such fine adjustments by adjusting the ratio of the number of teeth between the intermediate pinion and the winding mark gear, the number of teeth on the intermediate mark wheel, and the number of pawls. It is not easy in practice. In contrast, in the power reserve display device of the present invention, the planetary transmission wheel is provided with at least one kind of gear portion in addition to the planetary transmission gear, thereby minimizing the influence on other wheel trains and other timepiece parts. Fine adjustment is possible. In the rotation transmission path from the barrel wheel to the pawl wheel, the meshing structure of the first and second planetary wheels and the second and first sun wheels acts as a differential gear, so adjustment of the reduction ratio is relatively easy. The adjustment amount can have a relatively small influence on the rotation transmission path from the square hole wheel to the pawl wheel.

  If desired, instead of changing the number of teeth of the second planetary wheel and the first sun gear, or simultaneously with the change, the number of teeth of the first planetary wheel and the second sun pinion may be changed.

  In the power reserve display device of the present invention, for example, the another gear portion of the planetary transmission wheel may be composed of a plurality of coaxial gear portions that are coaxially and integrally disposed. In that case, two or more second sun gears are coaxially attached to the second sun, and one second sun gear of the plurality of second sun gears is separated from a position where the second sun gear meshes with the planetary transmission gear. One second sun gear meshes with one of the other gear parts of the planetary transmission wheel, and another second sun gear of the other gear part of the planetary transmission wheel. The position is adjustable in the extending direction of the central axis of the second sun true between a position meshing with another one of the gear portions. Here, the other gear part of the planetary transmission wheel is typically a small gear part (kana), that is, a gear part having a smaller diameter than the planetary transmission wheel, but in some cases, at least a part of the planetary transmission wheel is larger than the planetary transmission wheel. A gear portion having a diameter may be used.

  In such a power reserve display device, three or more kinds of maximum power reserve amounts can be set while the display area (the operating angle of the display pointer) is kept the same.

  In the power reserve display device of the present invention, the position adjustment of the second solar true regarding the extending direction of the central axis of the second solar true is performed, for example, by adjusting the hole stone of the solar true tenon. Even if comprised, it may be comprised by the needle seat which supports a solar true tenon part, or it may be comprised by the spring which exerts a thrust force on the end surface of a solar true tenon part. Here, even if the solar true tenon involved is the tenon of both the first and second solar true, the solar true of either one of the first and second solar true, ie, the first or second solar true It may be a two-sun true tenon.

  The power reserve display device according to another aspect of the present invention includes a coaxial first and second solar wheel, a planetary intermediate wheel coaxial with the first solar wheel, and the planetary intermediate wheel at an eccentric position in order to achieve the object. A first planetary gear rotatably supported by the second solar wheel and meshed with a pinion of the second solar wheel, a second planetary gear coaxially and integrally with the first planetary gear and meshed with the first solar wheel, and the first A planetary gear mechanism having a cogwheel integrated with the solar wheel and a planetary wheel mechanism, a planetary transmission wheel that transmits the rotation of the square hole wheel to the second solar wheel, and a part of the planetary intermediate wheel meshed with the barrel car A planetary intermediate gear, a winding mark intermediate wheel meshed with the gear wheel at a gear portion, a winding mark wheel meshed with a pinion portion of the winding mark intermediate wheel, and a display pointer attached to the true winding mark wheel A power reserve display device, wherein the planet transmission wheel is a planet transmission gear and the planet transmission gear. Is equipped with another gear part having a different diameter coaxially, and the second sun gear can be selectively mounted from one that meshes with the planetary transmission gear and one that meshes with the other gear part of the planetary transmission wheel. The tooth ratio between the second planetary wheel and the first solar wheel can be adjusted.

  That is, as in the power reserve display device according to one aspect described above, “the second sun wheel is provided with a plurality of second sun gears coaxially, and one second sun gear of the plurality of second sun gears is connected to the planet. The position of the second sun gear can be adjusted in the extending direction of the true central axis between the position of meshing with the gear and the position of another second sun gear meshing with the planet transmission pinion. The gear may be selectively mounted from a gear meshing with the planetary transmission gear and a gear meshing with another gear having a different diameter.

  In this case, although the number of common parts is reduced, not only the structure is simplified, but also the increase in the thickness can be minimized even if the maximum power reserve amount to be changed is large. .

  In the power reserve display device of the present invention, the gear ratio between the winding mark intermediate pinion and the winding mark wheel is further changed under the condition that the fine reduction ratio as described above is possible. By configuring the number of teeth of the winding mark intermediate wheel engaged with the tooth wheel and the number of teeth of the tooth wheel to be changed, a relatively large change in the tooth number ratio is performed in these portions. It may be.

  In the power reserve display device of the present invention, typically, the rotation angle range (operation angle) of the display pointer is 90 degrees or less. Thereby, the possibility of restricting the arrangement of other components can be kept relatively low. The rotation angle range of the display pointer can typically be 60 degrees (about) or 45 degrees (about), for example. However, in some cases, the rotation angle range (operation angle) of the display pointer may be larger than 90 degrees.

  The power reserve display device of the present invention as described above is incorporated in a wristwatch and used to display the remaining amount of the mainspring of the mechanical wristwatch. Here, the wristwatch is a condition for clarifying the degree of smallness of the watch, and lacks an arm device wearing mechanism, but is a size suitable for being worn on the wrist or the same size as a pocket watch, etc. It is the meaning including.

  Several preferred embodiments of the present invention will be described based on preferred examples shown in the accompanying drawings.

  FIG. 1 and FIG. 2 (a) show a wristwatch 2 provided with a power reserve display device 1 of a preferred first embodiment of the present invention. The wristwatch 2 includes a fan-shaped power reserve display 6 on a part of the dial 5.

  As can be seen from FIG. 1 showing a cross section of the wristwatch 2, a barrel 9 is arranged between the main plate 7 and the barrel holder 8. The barrel 9 includes a barrel 11 provided with a barrel gear 10 on the outer periphery, a barrel (not shown) coaxial with the barrel 11 and a square wheel 12 fixed to the barrel (not shown). And a mainspring 13 in the form of a spiral spring disposed in the chamber R of the barrel 11 and engaged with the barrel (not shown) and the barrel 11. The mainspring 13 is wound up by an automatic winding mechanism (not shown) when the user puts the wristwatch 2 on the wrist and moves the wrist or shakes the watch 2 while holding it. In the timepiece 2, the mainspring 13 is also wound by pinching and winding the crown 4.

  Further, as can be seen from FIG. 1, the power reserve mechanism 3 of the power reserve display device 1 is disposed between the main plate 7 and the third receiver 14. Here, the power reserve mechanism 3 indicates a train wheel portion of the power reserve display device 1.

  The power reserve display mechanism 3 includes the planetary transmission wheel 20, the first and second solar wheels 30, 40, the planetary wheel 50, the planetary intermediate wheel 60, the pawl wheel 70, the winding mark intermediate wheel 75, and the winding mark. The vehicle 80 is provided.

  The planetary transmission wheel 20 includes a true part 21 that is rotatably supported around the central axis B between the third receiver 14 and the barrel holder 8, and is fitted to the planetary transmission true part 21 and is attached to the square wheel 12. A meshed gear portion 22 and a kana portion 23 integral with the true portion 21 and having a smaller diameter and a smaller number of teeth than the planetary transmission gear portion 22 are provided.

  The first and second solar wheels 30 and 40 and the planetary intermediate wheel 60 are coaxial, and the common central axis is D. In this example, the true part of the first solar wheel 30, that is, the first sun true 31, is rotatably supported by the ground plate 7 and the bearing parts 15 and 16 of the third receiver 14 at the tenon parts 32 and 33 at both ends.

  The first sun true 31 has a small diameter true part 34, a medium diameter true part 35, and a large diameter true part 36. A planetary intermediate wheel 60 is rotatably fitted to the middle diameter true portion 35, and a cylindrical true portion of the second solar wheel 40, that is, the second sun true 41 is rotatably fitted to the small diameter true portion 34. Yes. Instead, for example, the first solar true or the planetary intermediate wheel may be rotatably fitted around the second solar true.

  In the bearing portion 15 of the main plate 7, extra stones or stones 17 are disposed, whereby the first sun true 31 is set at a position P1 displaced in the Z1 direction.

  The second solar wheel 40 has a medium-diameter diameter fitted to the second solar stem 41 with an interval U in the extending direction Z of the second solar stem 41 in addition to the cylindrical second solar stem 41. A second sun gear portion 42 and a large-diameter second sun gear portion 43 are provided. In this example, as described above, the first sun true 41 is set at the position P1 displaced in the Z1 direction, so that the large-diameter gear portion 43 of the second solar wheel 40 becomes the pinion portion 23 of the planetary transmission wheel 20. Meshed. The second solar wheel 40 further includes a kana portion 44 on the base plate 7 side of the true portion 41.

  The first sun wheel 30 has a gear portion, that is, a first sun gear 37 on the outer periphery of the large-diameter true portion 36. The diameter of the first sun gear 37 is slightly larger than the diameter of the second sun pinion 44.

  The planetary intermediate wheel 60 includes an eccentric hole 61 and an outer peripheral gear portion 62. The outer planetary intermediate gear 62 meshes with the barrel gear 10. The planetary intermediate gear 62 has a sufficient axial length (width) so that it can mesh with the barrel gear 10 regardless of its axial displacement position. Instead, the axial length (width) of the barrel gear 10 may be large. The planetary true 51 of the planetary wheel 50 is fitted in the eccentric through hole 61 of the planetary intermediate wheel 60 so as to be rotatable around the central axis E.

  The planetary wheel 50 is integrally provided with a first planetary gear 52 and a second planetary gear 53 at both ends of the planetary gear 51. The first planetary wheel 54 includes a planetary true 51 and a first planetary gear 52, and the second planetary wheel 55 includes a planetary true 51 and a second planetary gear 53. In the illustrated example, the planetary gear 51 and the second planetary gear 53 are integrally formed, and the first planetary gear 52 is fitted to the planetary gear 51. As a component, the planetary gear 51 may be formed integrally with the first planetary gear 52 and the second planetary gear 53 may be fitted.

  The first planetary gear 52 is meshed with the second sun pinion 44, and the second planetary gear 53 is meshed with the first sun gear 37. The diameter of the first planetary gear 52 is slightly larger than the diameter of the second planetary gear 53.

  Another medium-diameter true part 38 is formed in the vicinity of the end of the first solar truer 31 on the ground plane side, and a tooth wheel 70 is elastically fitted to the true part 38. The claw wheel 70 includes two claw portions 71 on the outer periphery at intervals of 180 degrees. The base portion of the pawl wheel 70 includes a pair of elastic arms 73 having a fitting hole 72 in the center and forming a closed curve as a whole. Accordingly, when an excessive torque is applied, the pawl wheel 70 can rotate in a sliding manner with respect to the true portion 38 of the first solar wheel 30.

  A winding mark intermediate wheel 75 and a winding mark wheel 80 are rotatably supported between the main plate 7 and the date dial holder 18. The winding mark intermediate wheel 75 has a true part 76, a gear part 77, and a pinion part 78. The winding mark intermediate gear 77 includes a tooth portion with which the pawl portion 71 of the pawl wheel 70 can be engaged. In this example, the pawl portion 71 engages with the tooth portion every time the pawl wheel 70 makes a half turn. Then, it is rotated around the central axis F by one tooth, that is, one pitch. Reference numeral 19 denotes a date wheel.

  The winding mark wheel 80 includes a true part 81 and a gear part 82. The winding mark wheel 80 is engaged with the winding mark intermediate pinion 78 by the winding mark gear 82, and is rotated around the central axis G in accordance with the rotation of the winding mark intermediate wheel 75. The winding mark 81 includes a tip 83 that passes through the holes of the date dial holder 18 and the dial 5 and protrudes from the surface of the dial 5, and a display pointer 84 is attached to the tip 83.

  As can be seen from FIG. 2A, the wristwatch 2 has a time display hand composed of an hour hand 91, a minute hand 92 and a second hand 93 at the center of the front face of the dial 5 via a clock train (not shown). Rotated about axis C. For example, a logo or other mark is attached to a region 94 in the vicinity of 12:00 on the dial plate 5. The area 94 may be used for other purposes, such as an operating area for other display pointers.

  The wristwatch 2 includes a fan-shaped power reserve display 6 on a part of the dial 5. A fan-shaped area 86 having a scale 85 in the power reserve display section 6 is close to an area 94 used for other purposes on the dial plate 5 but does not overlap the area 94. Is selected. Since the maximum power reserve amount of the wristwatch 2 having the power reserve display device 1 shown in FIGS. 1 and 2 is 72 hours, the scale 85 has a fan-shaped full scale of about 60 degrees for 72 hours. Is displayed.

  In the wristwatch 2 configured as described above, the general operation of the power reserve display mechanism 1 is as follows.

  At the time of winding, the rotation of the planetary intermediate wheel 60 is regulated by the barrel wheel 11 so that the planetary intermediate wheel 60 functions as a fixed vehicle. Accordingly, when the square wheel 12 is rotated in the A1 direction (clockwise as viewed from the back cover side) around the central axis (not shown) by the operation of the automatic winding mechanism (not shown), the planetary transmission wheel is accordingly generated. 20 rotates in the B1 direction, the second sun wheel 40 rotates in the D1 direction, the planetary wheel 50 rotates in the E1 direction, the first sun wheel 30 and the pawl wheel 70 rotate in the D1 direction, and the winding mark intermediate wheel Since 75 rotates in the F1 direction, the winding wheel 80 rotates in the G1 direction, and the display pointer 84 also rotates in the G1 direction. The rotation of the display pointer 84 in the G1 direction is stopped by a stopper (not shown) prohibiting the rotation of the winding mark wheel 80 at a position where the pointer 84 points to “72” which is the maximum power reserve amount in the scale 85. The Note that excessive torque thereafter is avoided by the slip fit portion of the pawl wheel 70.

  When unwinding or unwinding the mainspring 13 for normal hand movement, the reverse rotation of the square hole wheel 12 is prohibited by the helix (not shown), and therefore meshed with the square hole wheel 12 via the planetary transmission wheel 20. The second solar wheel 40 works as a fixed vehicle. Therefore, when the barrel wheel 11 rotates in the A1 direction around its center axis (not shown), the planetary intermediate wheel 60 rotates in the D2 direction, the planetary true 51 revolves in the D2 direction, and has a diameter larger than that of the first planetary gear 52. The first sun wheel 30 meshed with the small second planetary gear 53 rotates in the D2 direction, the pawl wheel 70 also rotates in the D2 direction, and the winding mark intermediate wheel 75 rotates in the F2 direction. The display pointer 84 is also rotated in the G2 direction. Accordingly, the power reserve amount display indicator 84 is gradually rotated in the G2 direction in accordance with the decrease in the power reserve amount (mainspring remaining amount) accompanying the unwinding of the mainspring 13 that normally moves the time display hands 91, 92, 93. .

  On the other hand, the case where the maximum power reserve amount is changed from 72 hours to 60 hours will be described with reference to FIGS. 3 and 2B. In FIG. 3 and FIG. 2B, the same members, parts and elements as those in FIG. 1 and FIG. 2A are denoted by the same reference numerals, and partially different members, parts and elements are suffixed later. a is attached.

  In the timepiece 2a having a maximum power reserve of 60 hours, the barrel 13a is typically configured in the same manner as the barrel 9 except that the mainspring 13a of the barrel 9a is shorter than the mainspring 13. Yes.

  The power reserve display mechanism 1a of the timepiece 2a is different from the power reserve display mechanism 1 of the timepiece 2 in the following points.

  Instead of the extra cobblestone 17 being arranged as the cobblestone 17 on the bearing portion 15 of the main plate 7 on the tenon portion 32 side of the first sun true 31, the cobblestone 17 a is formed on the bearing portion 16 of the third receiver 14 on the back cover side. Arranged as. Thereby, instead of taking the position P1 shifted in the Z1 direction, the first sun true 31 takes the position P2 shifted in the Z2 direction.

  At this position P2, as can be seen from FIG. 3, the engagement of the pinion portion 23 of the planetary transmission wheel 20 and the large-diameter second sun gear portion 43 of the second solar wheel 40 is released, and instead, the planetary transmission wheel 20 The gear portion, that is, the planetary transmission gear 22 and the second sun gear portion 42 having the medium diameter of the second sun wheel 40 are meshed with each other.

  The rotation of the display pointer 84 during winding depends on the tooth number ratio J (not shown) between the planetary transmission wheel 20 and the second solar wheel 40. In the case of the power reserve display device 1 of the timepiece 2 of FIG. 1, the gear ratio J (not shown) between the planet transmission wheel 20 and the second sun wheel 40 is the planet transmission wheel 23 of the planet transmission wheel 20 and the second sun wheel. It is the gear ratio J1 (not shown) with the large-diameter gear portion 43 of the vehicle 40. On the other hand, in the case of the power reserve display device 1a of the timepiece 2a in FIG. 3, the gear ratio J (not shown) between the planetary transmission wheel 20 and the second solar wheel 40 is the same as that of the planetary gear 22 of the planetary transmission wheel 20 and the second gear. It is a gear ratio J2 (not shown) with the intermediate gear portion 42 of the sun wheel 40. Naturally, since J1 <J2, the rotation angle of the square wheel 12 required to rotate the second solar wheel 40 by a certain amount is larger in the timepiece 2 than in the timepiece 2a. That is, as long as there is no great difference in conditions on the downstream side of the second solar wheel 40 with respect to the transmission of rotation, the timepiece 2a performs display with a smaller maximum power reserve amount than the timepiece 2. In this example, in the case of the timepiece 2, the maximum power reserve amount is 72 hours, whereas the maximum power reserve amount of the timepiece 2a is set to 60 hours.

  Actually, the planetary wheel 50a and the first solar wheel 30a are rotated so that the display pointer 84 is rotated according to the reduction of the maximum power reserve amount (72 hours → 60 hours) during rewinding or unwinding. The relative rotation with is adjusted. In this example, the gear ratio K (not shown) between the second planetary wheel and the first solar wheel is changed for this purpose. That is, in the case of the timepiece 2 of FIG. 1, the gear ratio K (not shown) between the gear portion 53 of the second planetary wheel 55 and the gear portion 37 of the first sun wheel 30 is K1 (not shown). On the other hand, in the case of the timepiece 2a of FIG. 3, the gear ratio K (not shown) between the gear portion 53a of the second planetary wheel 55a and the gear portion 37a of the first sun wheel 30a is K2 (not shown). Set to

  In the case of this example, the power reserve display mechanism of the timepiece 2a is increased so as to increase the influence of the revolution of the planetary wheel 50a so that the rotation angle of the first sun wheel 30 accompanying the rotation of the barrel wheel 11a in the A1 direction is relatively increased. In 1a, the second planetary gear 53a is set to have a smaller diameter than the second planetary gear 53 of the power reserve display mechanism 1 of the timepiece 2. Therefore, the tooth number ratio K1 (not shown)> K2 (not shown).

  Here, since the gears 52 and 53 and the gears 52a and 53 constitute a differential gear, the amount of decrease in the diameter of the gear 53a and the amount of increase in the diameter of the first sun gear 37a may be relatively small. Therefore, when viewed as a winding wheel train corresponding to the rotation of the square wheel 12, the increase in the gear ratio J (not shown) is slightly increased so as to compensate for the decrease in the gear ratio K (K1 → K2). It will be.

  As shown in FIG. 2B, the power reserve display mechanism 1a of the watch 2a has the pointer 84 in a state where the full scale of the scale 85a of the power reserve display section 6a is 60 hours instead of 72 hours. The operation is the same as that of the power reserve display mechanism 1 of the timepiece 2 except that it is rotated.

  Therefore, as is clear from the comparison between the timepieces 2 and 2a of FIGS. 1 and 3, in the timepiece 2a, the cobblestone is changed from the position where it acts as the cobblestone 17a of the bearing 15 to the position where it acts as the cobblestone 17a of the bearing 16. Then, the gear involved in meshing between the planetary transmission wheel 20 and the second sun wheel 40 is changed from the gears 23 and 43 to the gears 22 and 42, and the gear ratio of the second planetary gear 53 and the first sun wheel 37 is changed. By simply replacing the second planetary gear and the first sun gear, for example, the maximum power reserve amount can be changed from the clock 2 of 72 hours to the clock 2a of 60 hours. Of course, the dial 5 is also changed from the full-scale scale 85 for 72 hours to the full-scale scale 85a for 72 hours.

  That is, in the timepieces 2 and 2a, only a part of the parts are changed, the stone 17 is changed to the stone 17a, and the sun true 31 is simply shifted from the position P1 to the position P2. The maximum power reserve amount can be changed without actually changing the arrangement of.

  In order to set the sun true 31 at the position P2 biased in the Z2 direction, instead of disposing the hole stone 17a at the bearing 16, as shown in FIG. A needle seat 17b for positioning at the biased position may be provided.

  In FIG. 4, members, parts, and elements similar to those in FIG. 3 and FIG. 2B are denoted by the same reference numerals, and partially different members, parts, and elements are suffixed with a suffix “b”.

  The wristwatch 2b having the power reserve display device 1b shown in FIG. 4 includes the power reserve mechanism 3a shown in FIG. 3 except that the hole 17a is changed to the needle seat 17b in the power reserve mechanism 3b. The wristwatch 2a having the power reserve display device 1a is configured in the same manner, and the operation thereof is practically the same. In addition, since the recessed part H of the third receiver 14 in which the needle seat 17b is disposed is a part that is originally necessary as a relief part of the medium-diameter gear part 42 of the second solar wheel 40, the size compared with the hole stone 17a. Therefore, it is not necessary to secure an installation space for the needle seat 17b that is likely to be large, and the recess H can be effectively used. Of course, if desired, the recess H may have a shape and size suitable for mounting the needle seat 17b.

  Further, in order to set the sun true 31 to the position P2 biased in the Z2 direction, instead of using the hole stone 17a or the needle seat 17b, as shown in FIG. May be pressed in the Z2 direction by the leaf spring 17c. The solar pinion spring 17c in the form of a leaf spring is fixed to the third receiver 14c by a fixing means 17c2 such as a set screw at the base end portion 17c1, and the projecting end surface 39 of the end portion 33 of the sun true 31 at the distal end portion 17c3 in the Z2 direction. Press on. The fixing means 17c2 may be any other means as long as the base end portion 17c1 of the spring 17c can be fixed to the third receiver 14c with a minimum protrusion in the Z1 direction.

  In FIG. 5, the same members, parts and elements as in FIG. 4, FIG. 3 and FIG. 2B are denoted by the same reference numerals, and partially different members, parts and elements are suffixed with the suffix c. ing.

  The wristwatch 2c having the power reserve display device 1c shown in FIG. 5 includes the power reserve mechanism 3b shown in FIG. 4 except that the needle seat 17b is changed to a leaf spring 17c in the power reserve mechanism 3c. The wristwatch 2b having the power reserve display device 1b is configured in the same manner as the wristwatch 2b. In addition, since the leaf | plate spring 17c should just be fixed to the third receiver 14c lastly, compared with the case where the needle seat 17b is used, an assembly | attachment becomes easy.

  Instead of a structure in which the maximum power reserve amount can be adjusted in two steps, the maximum power reserve amount may be adjustable in three or more steps. 6 to 8 show a timepiece having a structure in which the maximum power reserve amount can be adjusted in two stages.

  In FIG. 6, members, parts, and elements similar to those in FIGS. 1 and 2A are denoted by the same reference numerals, and partially different members, parts, and elements are suffixed with d.

  In the wristwatch 2d having the power reserve display device 1d shown in FIG. 6, the planet transmission wheel 20d of the power reserve mechanism 3d is another planet transmission kana, ie, the first planet transmission wheel 22d and the first planet transmission wheel 23d. The second planet transmission pin 24 is coaxial. Further, the distance between the planet transmission gear 22 d and the first and second planet transmission pins 23 d and 24 in the extending direction of the central axis B is larger than the distance between the planet transmission gear 22 and the planet transmission pin 23 in the power reserve mechanism 3. The size of the second solar wheel 40 is large enough to be loosely fitted between them. The planet transmission truth 21d is also longer than the corresponding member 21 of the power reserve mechanism 3.

  Further, in the power reserve mechanism 3d of the power reserve display device 1d, the second sun wheel 40d has a small diameter gear portion 45 coaxially as a second sun gear in addition to the medium diameter gear portion 42d and the large diameter gear portion 43d. . The distance between the sun gear portions 42d, 43d, 45 of the second sun wheel 40d in the extending direction of the central axis D is the sun gear portions 42, 43 of the second sun wheel 40 in the power reserve mechanisms 3, 3a, 3b, 3c. Greater than the interval between.

  Further, in the power reserve mechanism 3d of the wristwatch 2d, the second solar true 41d and the second solar pinion 44d are longer than the second solar true 41 and the second solar pinion 44 of the power reserve mechanism 3, and accordingly, The solar true 31d is longer than the first solar true 31 of the power reserve mechanism 3. In addition, in the power reserve mechanism 3d, the planetary intermediate gear 62d of the planetary intermediate wheel 60d and the planetary true of the planetary vehicle 50d are arranged so that the displacement amounts in the Z1 and Z2 directions of the first and second solar truths 31d and 41d can be increased. 51 d and hole stone 17 d are longer in the axial direction than the planetary intermediate gear 62 and hole stone 17 of the planetary intermediate wheel 60 of the power reserve mechanism 3. The recess Hd of the third receiver 14d and the recess of the ground plane 7d are also deepened. Further, the gear 77d and the true 76d of the winding mark intermediate wheel 75d and the true 81d of the winding mark wheel 80d are more axial than the gear 77 and the true 76 of the winding mark intermediate wheel 75 of the power reserve mechanism 3 and the true 81 of the winding mark wheel 80. Long (thick) in the direction.

  The wristwatch 2d takes a position P1d where the first sun true 31d is biased in the Z1 direction so that the maximum power reserve amount is maximized, and is the largest of the second planet transmission pin 24 and the second sun wheel 40d, which are the smallest diameter. The sun gear portion 45 having a diameter meshes with the sun gear portion 45. When the maximum power reserve amount in this state is 72 hours, for example, the planetary transmission gear 22d and the second planetary transmission kana 24 of the planetary transmission wheel 20d are respectively connected to the planetary transmission gear 22 and the planetary transmission of the power reserve mechanism 3. The large diameter gear 43d of the second sun wheel 40d may have the same diameter and the same number of teeth as the large diameter gear 43 of the second sun wheel 40 of the power reserve mechanism 3 with the same diameter and the same number of teeth as the kana 23. In this case, the other gears meshed or engaged with each other in the state shown in FIG. 6 may have the same diameter and the same number of teeth as the corresponding gears of the power reserve mechanism 3. Naturally, the power reserve display device 1d of the timepiece 2d operates in the same manner as the power reserve display device 1 of the timepiece 2 of FIG.

  A timepiece 2e in which the maximum power reserve amount of the timepiece 2d (maximum power reserve amount 72 hours) shown in FIG. 6 is changed to 60 hours has the form shown in FIG. The barrel of FIG. 7 is the same as the barrel 9a of FIG. In FIG. 7, members, parts, and elements similar to those in FIGS. 6 and 3 are denoted by the same reference numerals, and partially different members, parts, and elements are suffixed with e.

  In the watch 2e, the hole stone 17d is changed to a thin hole stone 17e1 as shown in FIG. 1, and a hole stone 17e2 similar to the hole stone 17a as shown in FIG. 3 is mounted on the bearing 16 side. Thus, the first solar true 31d is set to a state P2e displaced by one step in the Z1 direction. The hole stone 17e1 and hole stone 17e2 shown in FIG. 1 have the same shape, but may have different shapes. In this state P2e, as can be seen from FIG. 7, the meshing of the gear 43d and the pinion portion 24 is released, and instead, the medium gear 42d of the second sun wheel 40d is meshed with the pinion portion 23d of the planetary transmission wheel 20d. ing. In this state, the intermediate gear portion 42d of the second solar wheel 40d is rotated by the first planet transmission pinion 23d that is rotated along with the rotation of the planet transmission wheel 22d meshed with the square wheel 12, so that FIG. The diameters and the number of teeth of the gears 23d and 42d are slightly different from those shown in FIG. Therefore, the diameters and the number of teeth of the gears 53e and 37e are slightly different from those shown in FIG. 7 is the same as the state shown in FIG. 3, and the power reserve display device 1e of the timepiece 2e operates in the same manner as the power reserve display device 1a of the timepiece 2a in FIG.

  The timepiece 2f shown in FIG. 6 and FIG. 7 in which the maximum power reserve amount of the timepiece 2d (maximum power reserve amount 72 hours) and 2e (maximum power reserve amount 60 hours) is changed to 48 hours has the form shown in FIG. Become. The barrel 9f of FIG. 8 is the same as the barrel 9a of FIG. 7 except that the mainspring 13f is further shortened. In FIG. 8, members, parts, and elements similar to those in FIG. 7 are denoted with the same reference numerals, and partially different members, parts, and elements are suffixed with a suffix f.

  In the watch 2f, the first sun true 31d is maximized in the Z1 direction by removing the hole stone 17e1 and changing the hole 17e2 on the bearing 16 side to a thick hole stone 17d as shown in FIG. The biased state P3 is set. In this state P3, as can be seen from FIG. 8, the meshing between the gear 42d and the kana portion 23d is released, and instead, the small-diameter gear 45 of the second solar wheel 40d is meshed with the gear portion 22d of the planetary transmission wheel 20d. Yes. In this state, the small-diameter gear portion 42d of the second solar wheel 40d is directly rotated according to the rotation of the planetary transmission wheel 22d meshed with the square hole wheel 12. The transmission form of this rotation is the same as that of the power reserve mechanism 3a of the timepiece 2a shown in FIG. However, the diameters and the number of teeth of the second planetary gear 55f and the first sun gear 37f are set so that the display pointer 84 can be rotated with respect to the same sector-shaped display region 86 in accordance with a smaller rotation of the square wheel 12. Different. In other respects, the state shown in FIG. 8 is the same as the state shown in FIG. 3, and the power reserve display device 1 f of the timepiece 2 f is different from the state shown in FIG. 3 except that the full span is 48 hours instead of 60 hours. It operates in the same manner as the power reserve display device 1a of the watch 2a.

  In order to make it possible to change the maximum power reserve amount in three stages and to keep the watch thickness to a minimum, for example, the gear configuration and arrangement as shown in FIG. 9 are adopted. Also good. In a wristwatch 2g having a power reserve display device 1g provided with a power reserve mechanism 3g partially showing only relevant portions in FIG. 9, a planetary transmission wheel 20g having three gear portions 22, 23, 25 and three suns are provided. The second solar wheel 40g provided with the gear portions 42, 43, 46 is arranged in order. The gear parts 22 and 23 of the planetary transmission wheel 20g and the sun gear parts 42 and 43 of the second solar wheel 40g are respectively the gear parts 22 and 23 of the planetary transmission wheel 20 and the second solar wheel 40 shown in FIG. The sun gear portions 42 and 43 have the same diameter and the same number of teeth. At the position where the gear portions 22 and 42 mesh, the maximum power reserve amount is 60 hours as in the example of FIG. 3, and at the illustrated position where the gear portions 23 and 43 mesh, the maximum power reserve as in the example of FIG. The amount is 72 hours. On the other hand, when the first sun true (not shown) is displaced in the Z2 direction and the gear portions 25 and 46 are meshed, the diameters of the gear portions 25 and 46 and the maximum power reserve amount are, for example, 48 hours. The number of teeth is adjusted. At this time, appropriately adjusting the diameter and the number of teeth of the second planetary gear 53 and the first sun gear 37 is the same as the adjustment at the time of changing to 60 hours in FIG. In the power reserve mechanism 3g, since the three intermediate sun gears have the maximum diameter, the position of the sun gear is shifted (displaced) in the Z1 direction or the Z2 direction by one sun gear, so that the other two Since various types of meshing are possible, the overall thickness can be minimized even though a common component having three types of gear portions is prepared in advance.

  Furthermore, instead of attaching a plurality of second sun gear portions concentrically in advance to the second sun, only one gear portion having a predetermined diameter and number of teeth may be exchanged and attached.

  FIG. 10 shows a power reserve display device having a power reserve mechanism 3h having one second sun gear portion 43 for the planetary transmission wheel 20 in which the maximum power reserve amount can be changed in two stages as in FIG. A wristwatch 2h with 1h is shown. In the wristwatch 2h in FIG. 10, parts that are the same as those of the wristwatch 2 in FIG. 1 are assigned the same reference numerals, and parts that are partially different are suffixed with a suffix h.

  Since the wristwatch 2h has only one second sun gear portion 43 of the second sun wheel 40h and lacks the gear portion 42, the second and first sun gears 41h and 31h have short Z-direction lengths, and the third receiving portion. 14h, the thickness in the Z direction is thin, and the sun trues 31h and 41h need only be maintained at the position P3 without being displaced in the Z direction. The wristwatch 1 has the same structure as the wristwatch 2 and operates in the same manner as the wristwatch 2. That is, the power reserve display device 1h displays the power reserve amount with a maximum power reserve amount of 72 hours full scale.

  On the other hand, FIG. 11 shows a power reserve having a power reserve mechanism 3j having one second sun gear portion 42 for the planetary transmission wheel 20 in which the maximum power reserve amount can be changed in two stages as in FIG. A wristwatch 2j having a display device 1j is shown. In the wristwatch 2j of FIG. 11, the same parts, parts and elements as those of the wristwatches 2, 2a and 2h of FIG. 1, FIG. 3 and FIG. Subscript j is attached.

  The wristwatch 2j is the same as the power reserve display device 1h shown in FIG. 10 except that the sun gear portion of only one second sun wheel 40j is a gear portion 42 that directly meshes with the planetary transmission gear 22. is there. In this example, although the second sun pinion 44j is long in the axial direction, as long as the second sun gear 42 can be fixed to the second sun true 41h in a predetermined position, the second sun pinion 44j is as long as FIG. But you can. Since the planetary transmission wheel 20 and the second sun wheel 40j are coupled by the engagement of the planetary transmission gear 22 and the second sun gear 42, the maximum power reserve is 60 hours accordingly. As described above, the diameter and the number of teeth of the second planetary gear 53a of the planetary wheel 50a and the first sun gear 37a of the first sun wheel 20a are adjusted as in the case of the power reserve display device 1a of FIG. is there.

  FIG. 12 shows a power reserve display device having a power reserve mechanism 3k having one second sun gear portion 43d for a planetary transmission wheel 20k whose maximum power reserve amount can be changed in three stages, as in FIG. A wristwatch 2k comprising 1k is shown. In the wristwatch 2k in FIG. 10, parts that are the same as those of the wristwatch 2d in FIG. 6 are assigned the same reference numerals, and parts that are partially different from each other are suffixed with a suffix k.

  In the power reserve mechanism 3k of the wristwatch 2k, compared to the power reserve mechanism 3d in FIG. 6, the axial distance between the gear 22d and the kana portions 23d and 24 constituting the planet transmission wheel 20k is short, and the planet transmission true 21k is long. Is short. Compared to the wristwatch 2d of FIG. 6, the wristwatch 2k has only one second sun gear portion 43d of the second sun wheel 40k and lacks the gear portions 42 and 45, so that the second and first sun trues 41k. , 31k is short in the Z direction, the third socket 14k is thin in the Z direction, and the sun stems 31k, 41k may be maintained at the position P3 without being displaced in the Z direction. Except for the point that the hole stone 17 is not required, it has the same structure as the wristwatch 2d of FIG. 6 and operates in the same manner as the wristwatch 2d. That is, the power reserve display device 1k displays the power reserve amount with a maximum power reserve amount of 72 hours full scale.

  On the other hand, FIG. 13 shows a power reserve having a power reserve mechanism 3m having one second sun gear portion 42d for the planetary transmission wheel 20k whose maximum power reserve amount can be changed in three stages, as in FIG. A wristwatch 2m having a display device 1m is shown. In the wristwatch 2m of FIG. 13, parts that are the same as parts, parts, and elements of the wristwatch 2k, 2e of FIG. 12 and FIG. 7 are given the same reference numerals, and partially different parts are suffixed with the suffix m. ing.

  The power reserve display device 1m of the wristwatch 2m has the power reserve display shown in FIG. 12 except that the sun gear portion of only one second solar wheel 40m is a gear portion 42d that meshes with the planetary transmission pinion 23d. The same as the device 1k. In this example, the second sun pinion 44m is long in the axial direction, but as long as the second sun gear 42d can be fixed to the second sun true shaft 41k at a predetermined position, the second sun pinion 44m is as long as FIG. But you can. Since the planetary transmission wheel 20k and the second sun wheel 40m are coupled by the engagement of the planetary transmission gear 23 and the second sun gear 42d, the maximum power reserve is 60 hours accordingly. As described above, the diameter and the number of teeth of the second planetary gear 53e of the planetary wheel 50m and the first sun gear 37e of the first sun wheel 30m are adjusted as in the case of the power reserve display device 1e of FIG. is there.

  Further, FIG. 14 shows a power reserve having a power reserve mechanism 3n having one second sun gear portion 45 for the planetary transmission wheel 20k whose maximum power reserve amount can be changed in three stages as in FIG. A wristwatch 2n having a display device 1n is shown. In the wristwatch 2n of FIG. 14, the same parts, parts and elements as those of the wristwatches 2k and 2f of FIG. 12 and FIG. 8 are denoted by the same reference numerals, and partially different parts are suffixed with the suffix n. ing.

  The power reserve display device 1n of the wristwatch 2n has the power reserve shown in FIG. 12 except that the sun gear portion of only one second sun wheel 40n is a gear portion 45 that directly meshes with the planetary transmission gear 22d. This is the same as the display device 1k. In this example, although the second sun pinion 44n is long in the axial direction, as long as the second sun gear 45 can be fixed at a predetermined position to the second sun true shaft 41k, the second sun pinion 44n is about the same as FIG. 12 or FIG. The length of Since the planetary transmission wheel 20k and the second sun wheel 40n are coupled by the engagement of the planetary transmission gear 22d and the second sun gear 45, the maximum power reserve amount is 48 hours accordingly. As described above, the diameter and the number of teeth of the second planetary gear 53f of the planetary wheel 50n and the first sun gear 37f of the first sun wheel 30n are adjusted as in the case of the power reserve display device 1f of FIG. is there.

  In the above, a part or all of the main plate, the third wheel guard, and the date wheel presser may be members called by other names.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional explanatory view of a part of a wristwatch according to a preferred embodiment of the present invention including a power reserve display device according to a preferred embodiment of the present invention. The external appearance of the wristwatch of the preferable example by this invention is shown, (a) is front explanatory drawing of the wristwatch of FIG. 1, (b) is front explanatory drawing similar to (a) about the wristwatch of FIG. FIG. 2 is a cross-sectional explanatory view similar to FIG. 1 for a part of a wristwatch of a preferred embodiment of the present invention equipped with a power reserve display device having a structure similar to that of FIG. 1 and having a maximum power reserve amount changed. Sectional explanatory drawing similar to FIG. 3 about a part of a wristwatch provided with a power reserve display mechanism of a modification of the power reserve display mechanism of FIG. 3. Sectional explanatory drawing similar to FIG. 3 about a part of a wristwatch provided with a power reserve display mechanism of another modification of the power reserve display mechanism of FIG. Sectional explanatory drawing similar to FIG. 1 about one part of the wristwatch of another preferable Example of this invention provided with the power reserve display apparatus of another preferable Example of this invention. FIG. 6 is a cross-sectional explanatory view similar to FIG. 6 for a part of a wristwatch of another preferred embodiment of the present invention having a power reserve display device having the same structure as that of FIG. 6 and having a maximum power reserve amount changed. . FIG. 6 is a cross-sectional explanatory view similar to FIG. 6 for a part of a wristwatch of another preferred embodiment of the present invention having a power reserve display device having the same structure as that of FIG. 6 and having a maximum power reserve amount changed. . Explanatory drawing which showed a part of power reserve display apparatus of the modification of the power reserve display apparatus shown in FIGS. 6-8. FIG. 3 is a cross-sectional explanatory view similar to FIG. 1 for a part of a wristwatch of another preferred embodiment of the present invention equipped with a power reserve display device of still another preferred embodiment of the present invention. FIG. 10 is a cross-sectional view similar to FIG. 10 for a part of a wristwatch of still another preferred embodiment of the present invention having a power reserve display device having the same structure as FIG. 1 and having a maximum power reserve amount changed. Figure. FIG. 3 is a cross-sectional explanatory view similar to FIG. 1 for a part of a wristwatch of another preferred embodiment of the present invention equipped with a power reserve display device of still another preferred embodiment of the present invention. FIG. 11 is a cross-sectional view similar to FIG. 11 for a part of a wristwatch of still another preferred embodiment of the present invention having a power reserve display device having the same structure as FIG. 1 and having a maximum power reserve amount changed. Figure. FIG. 12 is a cross-sectional view similar to FIG. 12 for a part of a wristwatch of still another preferred embodiment of the present invention having a power reserve display device having the same structure as that of FIG. 1 and having a maximum power reserve amount changed. Figure.

Explanation of symbols

1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1j, 1k, 1m, 1n Power reserve display device 2, 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2j, 2k , 2m, 2n Wristwatch 3, 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3j, 3k, 3m, 3n Power reserve mechanism 5 Dial 6, 6a, 6f Display unit 7, 7d Base plate 9, 9a , 9f barrel 10 gear barrel 11, 11a, 11f barrel wheel 12 square wheel 13, 13a, 13f mainspring 14, 14c, 14d, 14h, 14k third counter 15, 16 bearing 17, 17a, 17d 17e1, 17e2, 17f hole stone 17b Needle seat 17c Leaf spring (sun kana spring)
20, 20d, 20k Planetary transmission wheels 21, 21d, 21k Planetary transmission true 22, 22d Planetary transmission gears 23, 23d Planetary transmission kana 24 Planetary transmission kana 25 Planetary transmission gears 30, 30a, 30d, 30e, 30f, 30j, 30k, 30m, 30n 1st solar wheel 31, 31d, 31h, 31k 1st sun true 32, 33, 33h, 33k Tenon portion 37, 37a, 37e, 37f 1st sun gear 40, 40d, 40h, 40j, 40k, 40m, 40n second sun wheel 41, 41d, 41h, 41k second sun gear 42, 42d second sun gear 43, 43d second sun gear 44, 44d, 44j, 44m, 44n second sun pinion 45, 46 second sun gear 50, 50a, 50d, 50e, 50f, 50m, 50n Planetary wheels 51, 51d Planetary true 52 First planetary gears 53, 53a, 5 3e, 53f Second planetary gears 54, 54d First planetary wheels 55, 55a, 55d, 55e, 55f Second planetary wheels 60, 60d Planetary intermediate wheels 62, 62d Planetary intermediate gears 70 Teeth wheels 71 Pawls 73 Elastic arms 75 windings Marking intermediate wheel 76 Winding mark intermediate gear 77 Winding mark intermediate gear 78 Winding mark intermediate pinion 80 Winding mark wheel 81 Winding mark truth 82 Winding gear wheel 83 End 84 Display pointer 85, 85a Scale 86 Fan-shaped area 91 Hour hand 92 Minute hand 93 Second hand 94 Use area B, C, D, E, F, G Rotation center axis B1, B2, D1, D2, E1, E2, F1, F2, G1, G2 Rotation (rotation) direction H, Hd, Hh, Hk Recess Z Thickness direction Z1, Z2 Displacement (bias) direction

Claims (10)

Coaxial first and second solar wheels, a planetary intermediate wheel coaxial with the first solar wheel, a first planetary wheel that is rotatably supported by the planetary intermediate wheel at an eccentric position and meshes with a pinion of the second solar wheel A planetary gear mechanism including a second planetary gear coaxially and integrally with the first planetary gear and meshing with the first solar wheel, and a pawl wheel coaxial with the first solar wheel;
A planetary transmission wheel that transmits the rotation of the square hole wheel to the second solar wheel;
A planetary intermediate gear that forms part of the planetary intermediate wheel and meshes with the barrel wheel;
A winding mark intermediate wheel meshed with the gear wheel at a gear portion, and a winding mark wheel meshed with a pinion portion of the winding mark intermediate wheel;
A power reserve display device having a display pointer attached to the winding mark wheel,
The planetary transmission wheel is coaxially provided with a planetary transmission gear and another gear part having a different diameter from the planetary transmission gear,
The second sun wheel is provided with a plurality of second sun gears coaxially, and a second sun gear different from a position where one second sun gear of the plurality of second sun gears meshes with the planetary transmission gear. Is adjustable in the direction in which the central axis extends, between the position where the second sun is engaged with the other gear portion of the planetary transmission wheel,
A power reserve display device capable of adjusting a gear ratio between the second planetary wheel and the first solar wheel. The other gear portion of the planetary transmission wheel is composed of a plurality of coaxial gear portions arranged coaxially and integrally,
The second sun wheel is provided with three or more second sun gears coaxially, and one second sun gear of the plurality of second sun gears meshes with the planetary transmission gear; A position where two second sun gears mesh with one of the plurality of gear portions of the planetary transmission wheel, and another second sun gear which is engaged with the other plurality of gear portions of the planetary transmission wheel. 2. The power reserve display device according to claim 1, wherein the power reserve display device can be adjusted in a direction in which the second sun true central axis extends in a position that engages with another one of the gear portions. 3. The position adjustment of the second solar true with respect to the extending direction of the central axis of the second solar true is performed by adjusting a hole stone of the solar true tenon. Power reserve display device. The power reserve according to claim 1 or 2, wherein the position adjustment of the second solar true with respect to the extending direction of the central axis of the second solar true is performed by a needle seat that supports a solar true tenon. Display device. The position adjustment of the second solar true in the extending direction of the central axis of the second solar true is performed by a spring that exerts a thrust force on the end face of the solar true tenon. The power reserve display device described. Coaxial first and second solar wheels, a planetary intermediate wheel coaxial with the first solar wheel, a first planetary wheel that is rotatably supported by the planetary intermediate wheel at an eccentric position and meshes with a pinion of the second solar wheel A planetary gear mechanism including a second planetary gear coaxially and integrally with the first planetary gear and meshing with the first solar wheel; and a planetary gear mechanism including a pawl wheel coaxial with and integral with the first solar vehicle;
A planetary transmission wheel that transmits the rotation of the square hole wheel to the second solar wheel;
A planetary intermediate gear that forms part of the planetary intermediate wheel and meshes with the barrel wheel;
A winding mark intermediate wheel meshed with the gear wheel at a gear portion, and a winding mark wheel meshed with a pinion portion of the winding mark intermediate wheel;
A power reserve display device having a display pointer attached to the winding mark wheel,
The planetary transmission wheel is coaxially provided with a planetary transmission gear and another gear part having a different diameter from the planetary transmission gear,
The second sun gear can be selectively mounted from one that meshes with the planetary transmission gear and one that meshes with the other gear portion of the planetary transmission wheel,
A power reserve display device capable of adjusting a gear ratio between the second planetary wheel and the first solar wheel. The power reserve display device according to any one of claims 1 to 6, wherein a tooth number ratio between the winding mark intermediate pinion and the winding mark wheel is changed. The power reserve display device according to any one of claims 1 to 7, wherein the number of teeth of the winding mark intermediate wheel that is engaged with the ratchet wheel is changed. The power reserve display device according to any one of claims 1 to 8, wherein a rotation angle range of the display pointer is 90 degrees or less. A wristwatch comprising the power reserve display device according to any one of claims 1 to 9.

Images