JP3444250B2 - clock - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece component arrangement.

[0002]

2. Description of the Related Art An electronic timepiece is disclosed in JP-A-62-49785.
As described above, an automatic self-winding timepiece has been invented in which a small power generator generates power by the movement of a rotary weight, the secondary power source is charged with the power, and the energy is used to drive a timepiece. For this watch,
The larger the weight of the oscillating weight is, the larger the input energy is, and the larger the amount of power generation is. What is the weight amount?
It is represented by the product of the weight of the oscillating weight and the distance from the center of rotation to the center of gravity of the oscillating weight. Therefore, if the weights are the same, it can be said that it is effective to configure the weight of the rotary weight as far from the center of rotation as possible.

Therefore, in the conventional example, a train wheel and a coil which constitute a movement are built in the center side, and no parts are arranged outside thereof, and the thickness is made thinner than that of the built-in parts portion. The thick part of the rotary weight is arranged on the upper part, and the thin part of the rotary weight is arranged on the upper side of the built-in component part.

It can be said that this is an efficient arrangement,
It is necessary to integrate the built-in parts of the movement into a range of diameter smaller than the thick part of the rotary weight.

[0005]

However, when attempting to realize a small and thin watch, the following problems arise.

In order to reduce the size and thickness of the self-winding watch, it is necessary to secure a sufficient weight of the rotary weight, even if the movement diameter is small. It is necessary to make it as small as possible.

[0007] There is a general quartz timepiece having a diameter of about 10 mm, and there is a sufficient possibility, but since it is an automatic winding timepiece, it is subject to the following restrictions.

[0008] In order to carry the mobile device and keep it moving, and to allow a sufficient amount of energy to be stored, the motor power consumption is made as small as possible and the generated power is made as large as possible. It is necessary to secure many.

Therefore, as an effective means for the timepiece motor, there is a method of increasing the coil resistance while securing the magnetomotive force of the timepiece coil, but this tends to increase the coil volume.

With respect to the power generating coil, it is necessary to generate a high induced voltage, effectively take out that as a current, and charge the secondary power source. The induced voltage is
Since it is proportional to the number of turns of the magnetic flux and the amount of change in the magnetic flux,
It is advantageous to increase the number of turns of the coil. In order to extract it effectively as a current, it is necessary to lower the coil impedance, that is, the coil resistance. This is also in the direction of increasing the volume of the power generation coil as in the case of the timepiece coil.

Therefore, if the range of parts with built-in movement is reduced as it is for the purpose of downsizing and thinning, the power generation performance is remarkably deteriorated, which is not suitable for actual use.

[0012]

In order to solve the above-mentioned problems, the timepiece of the present invention comprises a rotary weight and a power train wheel having a power generation rotor transmission wheel for transmitting the rotation of the rotary weight to a generator. A magnetic circuit having a generator coil and a generator stator of a generator driven by the generator train, a crystal unit, an IC chip, a watch coil of a watch motor, and a watch train part; The rotary weight has a thin portion on the rotation center side and a thick portion on the outer peripheral side, and the power generation train wheel, the crystal unit, the IC chip, the timepiece coil, and the timepiece train wheel portion have a range of rotation loci of the thin portion. And at least a part of the power generating coil is disposed in a range of a rotational trajectory of the thin portion, the crystal unit is disposed between the power generating coil and an inner peripheral trajectory of the thick portion, and the IC chip is provided. Is planar with the magnetic circuit It is located, said generator rotor transmission wheel extends through the generator stator, characterized in that it is arranged to overlap with the magnetic circuit in a plane.

Further, in the present invention, the generator coil is arranged so as to overlap the generator rotor transmission wheel in a plane. Further, in the present invention, the magnetic circuit is formed by pressing the power generating stator and the power generating coil with a set screw.

Further, in the present invention, the IC chip and the crystal unit are mounted on a circuit board, and the circuit board is pressed by a circuit pressing plate having a spring portion and fixed by a screw.

[0015]

1 is an assembly plan view of an embodiment of the present invention, and FIGS. 2 to 7 are assembly sectional views of the same.

In the figure, 1 is a base plate which forms the base of the movement, 2 is a timepiece coil, 3 is a stator, and 4 is a rotor. The rotation of the rotor 4 is transmitted to the fourth wheel 7, the third wheel 8, the second wheel 9, the day wheel 10 and the hour wheel 11 via the fifth wheel 5. In addition, the rear wheel 10 of the day meshes with the iron wheel 12. The train wheel group is pivotally supported by a train wheel receiver 13.

The oscillating weight 20, which is a single weight, is fixed to a ball bearing 22 fixed to a oscillating weight receiver 21 by an oscillating weight screw 23. Below the rotary weight 20, there is a rotary weight wheel 24, which is similarly fixed. The rotary spindle 24 has a pinion 2
5a and the gear portion 25b mesh with the pinion portion of the power generation rotor transmission wheel 25, and the gear portion 25b meshes with the pinion portion 26a of the power generation rotor 26 to transmit the rotation of the rotary weight. The train wheel from the rotary weight wheel 24 to the power generation rotor 26 is 30 to 2
The rotation speed of the rotary weight 20 causes the power generation rotor 26 to rotate at a high speed. The speed increasing ratio can be freely set according to the performance of the generator and the specifications of the timepiece. The power generation rotor 26 includes a permanent magnet 2
Since 7 is fixed, magnetic fluxes in different directions each flow through the power generation stator 28 to the power generation coil 29, and an induced voltage is generated in the coil. The terminal of the power generation coil 29 is connected to the pattern of the coil lead board 39, and is pressed into contact with the circuit board 37 via the circuit pressing plate 38 with the set screw 44 to be electrically connected to the circuit. The power generating coil 29 and the power generating stator 28 are pressed against each other by setscrews 46 and 47 to form a magnetic path, but the coil lead substrate 39 and the circuit substrate 37 are flatly disconnected and thinned.

Next, regarding the circuit relation, 31 is a crystal unit, 32 is a MOSIC chip, 33 is an auxiliary capacitor,
Reference numeral 34 is a diode for rectification, and 35 and 36 are boost capacitors. These elements are mounted on a flexible circuit board 37. The circuit board 37 is pressed from above by a circuit pressing plate 38 having a spring portion, and is fixed by screws. Reference numeral 40 denotes a secondary power source capacitor, and each electrode is electrically connected to the pattern of the circuit board 37 by a positive terminal (not shown) and a negative terminal. In the circuit of this example, the voltage of the secondary power supply 40 is increased by the boosting capacitor 36.
The method of JP-A-60-203887 is used, in which the voltage is boosted by and the storage clock is driven in the auxiliary capacitor 33.

Reference numeral 14 denotes an external operating member, and a lever 15 for controlling this operation is engaged with a groove of the external operating member 14 and its position is regulated by a hollow 16. Kannuki 16
Engages with the groove of the clutch wheel 17 guided by the external operating member 14. Further, although it has a train wheel setting lever that trains the train wheel and resets the circuit in conjunction with the movement of the external operation member 14, it is not shown. Shidori 1
The 5 and the bolt 16 are determined in the upward direction by the thumb presser 18 fixed by the set screw 45. The switching operation is well known and will not be described.

In the above description, the oscillating weight 20 has the thick portion 20a on the outer peripheral portion, and has a locus that rotates on the outside of most of the built-in components constituting the movement. At least a part of the magneto coil 29 is
In this proposal, the coil winding portions overlap each other in a plane. A thin portion is formed inside the thick portion 20a, and the center of rotation of the rotary weight is also included. The winding portion of the power generation coil 29 overlaps with the gear 25b of the power generation rotor transmission wheel 25. Further, it overlaps with the MOSIC chip 32 and the circuit board 37 which form the circuit.

In FIG. 7, the upper tenon of the power generation rotor transmission wheel 25 constituting the power generation train wheel is guided by a bearing ball bearing 50 fixed to the rotary weight receiver 21. In the bearing ball bearing 50, the outer ring 50 a has a rotary weight receiver 21.
The plurality of balls 50b are directly engaged with the upper tenon of the power generation rotor transmission wheel 25. Generator rotor transmission vehicle 25
The positioning in the upward direction is performed by a retaining ring 50C fixed to the outer ring 50a. The outer ring 50a is made of a non-magnetic material. This is to reduce the magnetic influence on the generator, but if the influence can be ignored, a magnetic material such as steel may be used. Further, when the influence is great, it is possible to change not only the outer ring but also other portions to non-magnetic materials. A bearing bearing 51 is also used on the lower tenon side of the power generation rotor 26. As for the material, it is necessary to properly use the magnetic material and the non-magnetic material as described above, but it is desirable that at least the outer ring is made of the non-magnetic material because it is near the magnet. Bearing The bearing 51 is composed of an outer ring 51a, balls 51b, and a retaining ring 51C, and the outer ring 51a determines the advancing of the power generation rotor 26.

Bearings The bearings 50 and 51 do not use a retainer for the purpose of downsizing and cost reduction, but use of a retainer does not cause any problem. The bearing 50 is
The vicinity of the hole of the outer ring 51a projects toward the ball 50b, and the clearance with the retaining ring 50c is smaller than the outer diameter of the ball 50b. Therefore, the balls 50b will not come off even before the power generation rotor transmission wheel 25 is assembled.
Further, since the balls are displaced to some extent before the power generation rotor transmission wheel 25 is assembled, there is a gap between the balls and the outer ring 50a, and the dirt is easily removed by cleaning. Bearing The bearing 51 also has the same effect because the hole formed in the outer ring 51a and the retaining ring 51c is smaller than the outer diameter of the ball 51b, and the ball does not come off. Since both of the bearings mainly have a radial effect, the vertical play may be large.

In this example, on the generator rotor transmission wheel 25,
A bearing is used below the power generation rotor 26 for the following reason. The power generation rotor transmission wheel 25 has a pinion portion 25 a protruding above the rotary weight receiver 21 in order to mesh with the rotary weight wheel 24. Therefore, in order to adopt a general structure in which the support and the base plate are guided from above and below, the diameter of the bearing portion is made larger than the outer diameter of the pinion, and the bearing load increases. Further, the generator rotor 26 and the magnet 27 are combined with the generator stator 28.
The load is increased because the force is applied to the lower mortise side. The use of bearings in these portions has the effect of reducing bearing load and increasing power generation efficiency. It should be noted that if it is used under the power generation rotor transmission wheel or above the power generation rotor, it will be more efficient.

[0024]

The present invention has the following effects.
Among the watch parts such as the power generation train wheel, crystal unit, watch coil, and watch train wheel part, the thick and large parts are placed in the range of the rotation trajectory of the thin part of the rotary weight, so the overall thickness of the watch is reduced. Can be placed.

At least a part of the magneto coil is
Since the crystal unit is arranged in the range of the rotation locus of the thin portion and the crystal unit is arranged between the power generation coil and the inner circumferential locus of the thick portion, the power generation performance is improved in a limited timepiece space. be able to. That is, it is possible to improve the power generation performance in a limited timepiece space by increasing the length of the power generation coil to increase the number of turns and reducing the coil winding outer diameter of the power generation coil. Then, in order to arrange the magneto coils whose length is increased and the number of turns is increased in the space efficiently in the timepiece, when at least a part of the magneto coils is arranged in the rotation locus range of the thin portion of the rotary weight, A dead space is inevitably generated in the plane direction between the inner peripheral locus of the thick portion. Therefore, arranging the crystal unit, which can be arranged relatively freely and is indispensable in the structure as a timepiece component, in the dead space leads to effective utilization of the limited space of the timepiece, and the timepiece can be miniaturized.

Further, since the magnetic circuit and the IC chip are arranged to overlap each other in a plane, the space including the timepiece circuit can be effectively utilized, and the timepiece can be further miniaturized. Further, since the IC chip is arranged so as to overlap the magnetic circuit in a plane, it is possible to shorten the wiring distance between the IC chip and the power generation coil, and the impedance of the wiring portion of the electronic circuit is reduced, so that the power generation is performed. The loss of the electric power obtained by the above is suppressed.

Further, since the IC chip is arranged so as to overlap the magnetic circuit in a plane, and the crystal unit is arranged between the generator coil and the inner peripheral locus of the thick portion of the rotary weight, the crystal unit and the IC are arranged. It is possible to place the chip close to each other. Therefore, the wiring distance between the IC chip and the crystal unit can be shortened, and the impedance of the wiring portion of the electronic circuit is reduced, so that the power consumption required for oscillation by the crystal resonator can be suppressed.

Further, since it becomes possible to dispose the crystal unit and the IC chip close to each other, the wiring distance between them can be shortened, and the maximum value of the electric capacitance generated in the wiring portion between both terminals of the crystal unit and the electric capacity. It is possible to reduce the variation in capacitance and suppress the displacement of the time standard signal during oscillation. Further, since the power generation rotor transmission wheel penetrates the power generation stator and is disposed so as to overlap the magnetic circuit in a plane, when the power generation rotor transmission wheel is disposed outside the power generation stator as in the conventional case. Compared with the above, the power generation rotor transmission wheel can be arranged inside the power generation stator, and the power generation mechanism including the power generation wheel train and the magnetic circuit can be further downsized. Therefore, the space including the power generation train wheel, the magnetic circuit, and the clock circuit can be effectively used. Further, according to the present invention, with the miniaturization of the power generation mechanism, it is possible to bring the power generation mechanism closer to the center of the timepiece, thereby increasing the degree of freedom in arranging the power generation mechanism in the timepiece. Therefore, it is possible to increase the length of the power generation coil that contributes most to the power generation performance and increase the number of turns. Therefore, it becomes possible to further improve the power generation performance.

As described above, according to the present invention, it is possible to provide a timepiece which has improved power generation performance while suppressing power consumption of a circuit portion to improve time accuracy and which is further thinned and downsized. can do.

[0030]

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a sectional view of an embodiment of the present invention.

FIG. 3 is a sectional view of an embodiment of the present invention.

FIG. 4 is a sectional view of an embodiment of the present invention.

FIG. 5 is a sectional view of an embodiment of the present invention.

FIG. 6 is a sectional view of an embodiment of the present invention.

FIG. 7 is a sectional view of an embodiment of the present invention.

[Explanation of symbols]

1 main plate 2 Clock coil 3 stator 4 rotor 5 fifth car 7 Fourth wheel 8 third wheel 9 second wheel The back car of the 10th 11 wheel car 12 small iron car 13 wheel train 14 External operation member 15 Shidori 16 Kanuki 17 car 18 Oshidori presser foot 20 slewing weight 21 Rotary weight receiver 22 ball bearings 23 Revolving weight screw 24 rotating spindle 25 generator rotor transmission vehicle 26 generator rotor 27 magnets 28 Power generation stator 29 generator coil 31 Crystal Unit 32 MOSIC chip 33 Auxiliary capacitor 34 diode 35, 36 Boost capacitor 37 circuit board 38 Circuit holding plate 39 Coil lead board 40 Secondary power supply 41 Negative terminal 44, 45, 46, 47 Set screw 50 bearing ball bearing 51 bearing ball bearing

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G04C 10/00 G04C 3/14

Claims (4)

(57) [Claims] 1. A magnet having a rotary weight, a power generation train wheel having a power generation rotor transmission wheel for transmitting the rotation of the rotary weight to a generator, and a power generation coil and a power generation stator of a generator driven by the power generation train wheel. It has a circuit, a crystal unit, an IC chip, a timepiece coil of a timepiece motor, and a timepiece train wheel portion. The rotary weight has a thin-walled portion on the rotation center side and a thick-walled portion on the outer peripheral side. The power generation train wheel, the crystal unit, the IC chip, the timepiece coil, and the timepiece train wheel portion are arranged in a rotation locus range of the thin portion, and at least a part of the power generation coil is a rotation locus range of the thin portion. The crystal unit is disposed between the power generation coil and the inner peripheral locus of the thick portion, the IC chip is disposed so as to planarly overlap with the magnetic circuit, and the power generation rotor transmission wheel is Penetrating the generator stator And,
A timepiece characterized by being arranged so as to overlap with the magnetic circuit in a plane. 2. The generator coil according to claim 1,
A timepiece characterized in that the timepiece is arranged so as to overlap the power generation rotor transmission wheel in a plane. 3. The timepiece according to claim 1, wherein the magnetic circuit is formed by pressing the power generating stator and the power generating coil with a set screw. 4. The IC chip and the crystal unit according to claim 1, wherein the IC chip and the crystal unit are mounted on a circuit board, and the circuit board is held by a circuit holding plate having a spring portion and fixed by screws. A clock characterized by that.