JP4013917B2 - clock - Google Patents

Description

  The present invention relates to a timepiece, a mechanical timepiece having a mainspring and a balance, or mechanical energy output when a mainspring is unwound to be converted into electric energy by a generator, and the rotation control means is operated by the electric energy to operate a rotor. The present invention relates to an electronically controlled mechanical timepiece that accurately moves a pointer fixed to a train wheel by controlling rotation.

  2. Description of the Related Art Conventionally, a mechanical timepiece that moves a pointer using the mechanical energy of a mainspring is known.

  In recent years, the mechanical energy when the mainspring is released is converted into electrical energy by a generator, and the rotation control means is operated by the electrical energy to control the current value flowing through the coil of the generator. There has been proposed an electronically controlled mechanical timepiece that accurately moves the hands fixed to the watch and displays the time accurately (see, for example, Patent Document 1).

  By the way, such a timepiece is always required to be thin, and so far, the barrel wheel between the main plate and the train wheel can be made thin, or the second wheel and fourth wheel can be watched. By shifting the layout from the center of the (movement), etc., the number of overlapping cars around the barrel wheel (the first car), the second car, and the fourth car was reduced to achieve a thinner design.

JP-A-8-5758

  However, when the barrel wheel is made thin, the mainspring itself is also reduced in width, which causes a problem that the stored energy is reduced and the duration is shortened.

  In addition, when the second wheel and fourth wheel are laid out from the center of the watch, the number wheel to which the minute hand and the second hand are coupled is out of the torque transmission path from the barrel wheel to the rotor (or balance). For this reason, there arises a problem that the pointer is rattled due to the backlash of the wheel. For this reason, in particular, in such a timepiece, in order to prevent rattling of the pointer, the wheel connected with the pointer is pressed in the axial direction by a leaf spring or the like to prevent the shift in the circumferential direction of the vehicle. However, if it does in this way, the pressing force of a leaf | plate spring will become resistance, and load will become large, and duration will also become short again.

  For example, even if the wheel with the second hand connected by a leaf spring is pressed in the axial direction, if an impact is applied to the watch, the second hand will be advanced by the amount of backlash due to the imbalance of the second hand. There was also a problem that the second hand stopped before power was reapplied after being packed.

  An object of the present invention is to provide a timepiece that can be thinned while maintaining its duration.

The timepiece of the present invention is a timepiece in which a pointer coupled to the wheel train is moved by the mechanical energy of the spring transmitted through the train wheel, and the barrel of the barrel complete with the spring is formed in a cylindrical shape. A square hole wheel that is fitted into the barrel and rotates integrally is disposed between the main plate and the barrel wheel, and is inserted into a support member fixed to the main plate, thereby being cantilevered to the main plate. Supported by the state,
The outer peripheral side of the square hole wheel is bent toward the main plate side from the inner peripheral side, and is projected between the second wheel and the hour wheel that mesh with the barrel wheel.
In the present invention, since the barrel wheel (barrel barrel true) is supported only by the base plate, if the interference with the barrel wheel is avoided by, for example, opening a portion corresponding to the barrel wheel of the train wheel bridge, the wheel The train holder can be arranged closer to the main plate, and the watch can be made thinner. At this time, since it is not necessary to change the width of the barrel wheel, that is, the mainspring, the duration is maintained.

  Further, in the timepiece of the present invention, a square hole wheel fitted to the barrel complete is disposed between the barrel wheel and the main plate, and the outer peripheral side of the square hole wheel is bent toward the main plate side from the inner peripheral side. You may make it overhang between a 2nd wheel and an hour wheel. And you may hold | grip a square hole wheel between the latching | locking part provided in the barrel complete, and a main plate.

In the timepiece of the present invention, an electronic device including a generator that converts the mechanical energy of the mainspring into electric energy through the rotor, and a control circuit that is driven by the converted electric energy and controls the rotation period of the generator. It may be a controlled mechanical clock.
In such a case, it is possible to accurately display the time by accurately moving the hands fixed to the train wheel.

  According to the present invention, since the barrel complete (the barrel complete) is supported only by the main plate, the receiving member (the train wheel receiver) that supports the barrel complete can be made unnecessary. Therefore, the train wheel bridge can be freely designed so as to support the train wheel without being obstructed by the barrel wheel, and for example, by opening a portion corresponding to the train wheel barrel wheel, the barrel By avoiding interference with the car, the train wheel bridge can be arranged closer to the main plate, and the watch can be made thinner. At this time, since it is not necessary to change the width dimension of the barrel wheel, that is, the mainspring, there is an effect that the duration can be maintained.

  Hereinafter, each embodiment of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a plan view showing an outline of an electronically controlled mechanical timepiece as a timepiece according to the present embodiment, and FIGS. 2 and 3 are cross-sectional views of the main part thereof.

  1 to 3, the electronically controlled mechanical timepiece includes a barrel 1 made up of a mainspring 1a, barrel barrel gear 1b, barrel barrel 1c, and barrel lid 1d. The mainspring 1a has an outer end fixed to the barrel gear 1b and an inner end fixed to the barrel complete 1c. The barrel 1c is formed into a cylindrical shape and is inserted into the support member 2 so that the barrel 1c is supported in a cantilever state by the base plate 3 via the support member 2 and is screwed into the support member 2 At the same time it is pressed so as not to come out upward in the figure, it also has rattles (foot scratches) in the cross-sectional direction. Such a support member 2 has a flange portion 2a on the ground plate 3 side, and is fixed to the ground plate 3 by caulking the peripheral edge of the flange portion 2a on the barrel side (upper side in the figure), so that it is more difficult to fall down. .

  In addition, as a fixing method of the supporting member 2 to the ground plane 3, welding, brazing, etc. may be used other than caulking. Further, the support member 2 does not need to be a separate member from the base plate 3. For example, when the base plate 3 is made of metal, the shape corresponding to the support member 2 is left uncut away when the base plate 3 is manufactured. The base plate 3 may be integrated with the base plate 3 in advance. When the base plate 3 is made of resin, the shape corresponding to the support member 2 is projected from the base plate 3 by devising a molding die and integrated with the base plate 3 in advance. You may shape | mold.

  Between the barrel complete 1 and the main plate 3, a square hole wheel 4 that rotates integrally with the barrel complete 1c is arranged. The square hole wheel 4 has a center hole having a square shape or a track shape, and the center hole is inserted into a rectangular portion (corner portion) of the barrel 1c and the locking portion 1e of the barrel 1c and the main plate. 3 and is arranged in a so-called throwing structure. The outer peripheral side of the square hole wheel 4 is bent to the main plate 3 side by drawing or the like, and protrudes between the second wheel 6 and the hour wheel 6c on one side in the figure.

  The rotation of the barrel wheel 1b is transmitted to the second wheel 6 and then increased in speed to the third wheel 7 (FIG. 1), from the third wheel 7 to the forty-fourth wheel 9 via the second hand wheel 8, The speed is further increased and transmitted to the fourth wheel 10, fifth wheel 11, sixth wheel 12, and rotor 13. The second wheel 6 has a cylindrical pinion 6a, the minute pin 6b is fixed to the pinion pin 6a, and the second hand 8a is fixed to the second hand wheel 8. In other words, in the present embodiment, the second wheel 6 provided with the minute hand 6b and the second hand wheel 8 provided with the second hand 8a via the cylindrical pinion 6a are each configured to transmit torque from the barrel wheel 1 to the rotor 13. It is built in the route, and during hand movement, the backlash is always stuck in one direction due to the force from the barrel in the direction of rotation of the wheel. Therefore, rattling of the minute hand 6b and the second hand 8a due to backlash of the second wheel 6 and the second hand wheel 8 is prevented.

  The second and fifth wheels 6 and 11 are supported by the second receiver 15 on the upper side and the bottom plate 3 is supported on the lower side, and the third, fourth and sixth wheel 7, 10 and 12 and the rotor 13 are connected to the train wheel bridge 14 on the upper side. The lower part is supported by the main plate 3, and the forty-fourth wheel 9 is supported by the train wheel bridge 14 at the top and the second bridge 15 at the bottom. In particular, the center of the fifth wheel 6 overlaps with the sixth wheel 12 and the center of the forty-four wheel 9 overlaps with the second wheel 6 in plan view (FIG. 1). A dial plate 17 is disposed outside the base plate 3 (lower side in FIGS. 2 and 3), and a magnetic-resistant plate 18 made of a magnetic material such as an amorphous material is interposed between the dial plate 17 and the base plate 3. .

  This electronically controlled mechanical timepiece includes a generator 20 including a rotor 13, a stator 21, a first coil block 22, a second coil block 23, and a joint 24. The rotor 13 includes a rotor magnet 13a, a rotor pinion 13b, and a rotor inertia disc 13c. Among these, the rotor inertia disc 13c is for reducing the rotational speed fluctuation | variation of the rotor 13 with respect to the fluctuation | variation of the drive torque transmitted from the barrel complete 1 via a train wheel. The stator 21 forms a part of the magnetic circuit of the generator 20, and has an arrangement hole 21a in which the rotor magnet 13a is arranged, so that the magnetic flux of the rotor 13 is the first and second coil blocks 22, 23. The magnetic cores 22a and 23a are linked to each other. The first and second coil blocks 22 and 23 are obtained by winding coils around the magnetic cores 22a and 23a. Here, the stator 21, the magnetic cores 22a and 23a, and the joint 24 are made of PC permalloy or the like.

  With such a configuration of the generator 20, when the mainspring 1 a is wound up, torque output when the mainspring 1 a is unwound is transmitted from the barrel 1 to the rotor 13 via the wheel train of the sixth wheel 12, and the rotation of the rotor 13 As a result, an AC voltage is induced in each of the coil blocks 22 and 23.

  In the above electronically controlled mechanical timepiece, the AC output from the generator 20 is boosted and rectified through a rectifier circuit including step-up rectification, full-wave rectification, half-wave rectification, transistor rectification, etc., and charged to a smoothing capacitor. A control circuit (not shown) that controls the rotation of the generator 20 with the electric power from the capacitor is operated. The control circuit is constituted by an integrated circuit (IC) including an oscillation circuit, a frequency dividing circuit, a rotation detection circuit, a rotation speed comparison circuit, an electromagnetic brake control means, and the like, and a crystal resonator is used for the oscillation circuit.

  Further, the method of winding the mainspring 1a by rotating the square hole wheel 4 is performed through the kite wheel 31, the round hole wheel 32, and the square hole intermediate wheel 33 by operating the winding stem 30 connected to the crown not shown. At this time, the rotation direction of the square hole wheel 4 is regulated by the kojaze 4a. Further, the minute hand 6b and the hour hand are adjusted in the same manner by operating the winding stem 30 through the pinion wheel 34, the small iron wheel 35, the minute intermediate wheel 36, and the minute wheel 37. The drive system is stopped by bringing the regulating lever 38 into contact with the fifth wheel & pinion 11. In addition to arranging the small iron wheel 35 on the train wheel bridge 14 side, it may be arranged on the main plate 3 side. In this case, the minute wheel 37 according to the position of the small iron wheel 35, the hour pinion 6 a, and the hour wheel 6 c. By arranging the rear intermediate wheel 36 can be omitted. Further, the relationship between the rotation direction of the crown and the rotation direction of the pointer at the time of aligning the pointer can be made the same as the case where the small wheel 35 is arranged on the train wheel bridge 14 side. Furthermore, the method of winding the mainspring 1a may be other than the manual winding mechanism, and for example, an automatic winding mechanism that winds the mainspring 1a by rotating or rotating a rotating weight may be used. The mechanism for adjusting the time display of the minute hand 6b and the hour hand is the same as that of a well-known mechanical timepiece, and thus further detailed description is omitted.

  According to this embodiment, there are the following effects.

  1) In the electronically controlled mechanical timepiece according to the present embodiment, the barrel wheel 1 is supported only by the base plate 3 via the support member 2, so there is no need for the train wheel bridge 14 to face the barrel wheel 1, and the barrel wheel The portion corresponding to 1 can be made, for example, an opening so that interference with the barrel 1 can be avoided, and the train wheel bridge 14 can be arranged closer to the main plate 3 to make the watch thinner. Moreover, even if it incorporates the date display mechanism (calendar) and the magnetic-resistant board 18 which are not shown in figure by this, it can suppress that a thickness dimension becomes larger than the timepiece with the conventional date mechanism or the magnetic-resistant board 18 included.

  2) Since the thickness dimension of the barrel wheel 1, that is, the width dimension of the mainspring 1a, does not need to be reduced in reducing the thickness, the duration can be maintained.

  3) Although the square wheel 4 is arranged between the barrel wheel 1 and the main plate 3, this space is shared with the space for arranging the second wheel 6 and the space for arranging the square wheel 4 is used. There is no need for special provision, and the reduction in thickness can be promoted.

  4) Since the square hole wheel 4 is disposed in a throwing structure between the barrel wheel 1 and the main plate 3, it is not necessary to provide a complicated fixing means for fixing the square hole wheel 4 and the thickness can be further reduced.

  5) Since the outer peripheral side of the square hole wheel 4 is bent and extends between the second wheel 6 and the hour wheel 6c, the diameter of the square hole wheel 4 can be reduced without interfering with the second wheel 6. Can be big. Therefore, when winding the mainspring 1a, the force to turn the crown can be reduced, and the mainspring 1a can be easily wound.

  6) On the contrary, since the inner peripheral side of the square hole wheel 4 is separated from the main plate 3 in the axial direction, the thickness of the main plate 3 can be increased around the barrel complete 1c to improve its rigidity. The member 2 can be securely fixed and not easily fall down. Further, as described above, even when the base plate 3 is made of metal or resin and the support member 12 integrated therewith is provided, the same effect can be obtained by increasing the thickness of the base plate around the barrel complete 1c. Can be advantageous.

  7) Since the support member 2 has the flange portion 2a, the flange portion 2a can resist the force acting in the radial direction, and the support member 2 can be more unlikely to fall down.

  8) Since the second hand wheel 6 provided with the minute hand 6b and the second hand wheel 8 provided with the second hand 8a are respectively incorporated in the torque transmission path of the mainspring 1a, the second wheel 6, the second hand Shaking of the minute hand 6b and the second hand 8a due to the backlash of the car 8 can be prevented.

  9) Since it is not necessary to use a conventional leaf spring to prevent the minute hand 6b and the second hand 8a from rattling, there is no load caused by this, and there is no fear of shortening the duration. And since there is no need to arrange | position such a leaf | plate spring to the axial direction of the second hand wheel 8, there also exists an effect that a timepiece can be made thin.

  10) Since the forty-second wheel 9 is incorporated between the second hand wheel 8 and the fourth wheel 10 in the torque transmission path, the diameter of the pinion portion of the second hand wheel 8 or the fourth wheel 10 can be determined. There is no need to increase the size, and the overall movement can be reduced in diameter. Further, since the second wheel 8 is also a play wheel, it is possible to avoid the overlap of the second wheel 8 and the barrel, so that the width of the mainspring 1a can be maintained, and at the same time, the second hand 8a can be thinned while being arranged at the center of the watch.

  11) One end side of the forty-fourth wheel 9 and the fifth wheel 11 is received by the second wheel 15, and this second wheel 15 is originally provided for receiving the second wheel 6. By utilizing this for the forty-fourth wheel 9 and the fifth wheel 11, it is not necessary to provide a dedicated receiving portion for this purpose, and also in this respect, the thickness and diameter can be reduced.

  12) Since the forty second wheel 15 is provided with the forty fourth wheel 9 and the fifth wheel 11, the second moment of the cross section of the second wheel 15 can be increased, and it can be made more durable.

  13) By receiving the forty-fourth wheel 9 and the fifth wheel 11 with the second wheel 15, the shaft centers can be overlapped with the second wheel 6 and the sixth wheel 12, respectively, and the movement can be made smaller in diameter.

  14) In particular, by overlapping the center of the fifth wheel 11 with the sixth wheel 12, the diameter of the sixth wheel 12 can be increased without interfering with the fifth wheel 11. For this reason, since the speed increase ratio between the sixth wheel 12 and the rotor 13 can be increased, the power generation efficiency can be improved by rotating the rotor 13 engaged therewith at a higher speed. In addition, since the second wheel 15 on the side of the two-wheel barrel 1 relative to the rotor 13, that is, the fifth wheel 11 is supported by the second wheel 15 and the main plate 3, the movement is reduced in diameter while ensuring the diameter of the sixth wheel 12. At the same time, interference between the stator 21 and the inertia disc 13c and the second receiver 15 can be avoided, and the movement can be further reduced in thickness. That is, when the sixth wheel 12 is supported between the second receiver 15 and the main plate 3 or between the second receiver 15 and the train wheel bridge 14, the second receiver 15, the stator 21 and the inertia disc 13c interfere with each other. End up. Therefore, it is effective to support the fifth wheel 11 with the second wheel 15 and the main plate 3.

  15) By increasing the diameter of the sixth wheel 12, the diameter of the inertia plate 13 c of the rotor 13 can be further increased. For this reason, since inertia can be secured without increasing the weight of the rotor 13, the rotor 13 can be rotated more stably, and the tenon or bending of the rotor 13 due to dropping of the watch or the like can be prevented.

[Second Embodiment]
4 and 5 show a configuration in which the present invention is applied to a mechanical timepiece as a second embodiment. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted here.

  In the present embodiment, the fourth wheel & pinion 10 meshes with the shift wheel 41 and transmits power to a mechanical escapement composed of the shift gear 41, the ankle 42 and the balance 43, and a time standard is created by this escapement. . Since the structure and principle are well-known techniques, detailed description is omitted. Further, in the present embodiment, the restriction lever 38 is configured to come into contact with the fourth wheel & pinion 10. Note that reference numeral 44 in the figure is an ankle receiver. Other configurations are the same as those of the first embodiment.

  Even in this embodiment, the effects 1) to 13) can be obtained similarly.

  Note that the present invention is not limited to the above-described embodiments, and includes other configurations that can achieve the object of the present invention, and includes the following modifications and the like.

  For example, one end side of the forty-fourth wheel 9 and the fifth wheel 11 has been received by the second wheel 15, but even when these wheel 9 and 10 are received by the main plate 3 and the train wheel bridge 14. It is included in the present invention. However, it is preferable to do so because there is an effect that the reduction in thickness and the reduction in diameter can be further promoted as in the above embodiment.

  In each of the embodiments described above, the train wheel bridge 14 is brought close to the ground plate 3 by supporting the barrel wheel 1 only on the base plate 3, thereby reducing the thickness, but the portion corresponding to the barrel wheel 1 of the train wheel bridge 14 , The width of the incense barrel 1 or the mainspring 1a may be increased. In such a case, there is an effect that the duration can be extended.

It is a top view which shows the outline of the timepiece which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the principal part of 1st Embodiment. It is sectional drawing which shows another principal part of 1st Embodiment. It is a top view which shows the outline of the timepiece which concerns on 2nd Embodiment of this invention. It is sectional drawing which shows the principal part of 2nd Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Barrel wheel, 1a ... Spring, 1c ... Barrel true, 1e ... Locking part, 3 ... Base plate, 4 ... Square hole wheel, 6 ... Second wheel, 6b ... Minute hand, 6c ... Pipe wheel, 8 ... Second hand wheel, 8a ... second hand, 9 ... 44th wheel, 11 ... 5th wheel, 12 ... 6th wheel, 13 ... rotor, 14 ... wheel train receiver, 15 ... second wheel, 20 ... generator.

Claims (3)

In the timepiece that moves the hands coupled to the train wheel by the mechanical energy of the mainspring transmitted through the train wheel,
The barrel of the barrel complete with the mainspring is formed in a cylindrical shape, and a square hole wheel that is fitted to the barrel and rotates integrally is disposed between the ground plane and the barrel complete, and the ground plane Is supported in a cantilevered state by the base plate by being inserted into a support member fixed to
A timepiece in which the outer peripheral side of the square hole wheel is bent toward the main plate side rather than the inner peripheral side, and projects between the second wheel and the hour wheel that mesh with the barrel wheel.
2. The timepiece according to claim 1, wherein the square hole wheel fitted into the barrel complete is sandwiched between an engaging portion provided in the barrel complete and the main plate. . 3. The timepiece according to claim 1, wherein a generator that converts the mechanical energy of the mainspring into electric energy through a rotor, and a rotation period of the generator that is driven by the converted electric energy. An electronically controlled mechanical timepiece comprising a control circuit for controlling the timepiece.

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