JP2000121759A - Power generation watch with rotary weight - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the characteristics of a watch coil and a generation coil and small-sizing and thinning by forming a generation coil thinner and longer than the clock coil and arranging it overlapping in plane at least a part of clock circuit. SOLUTION: A generation coil 29 is formed long in total length and thin in radial direction. By this, necessary turns are ensured without thinning the wire diameter, the radial dimension of whole coil can be made thin, the total length of the coil wire becomes shorter as a result and the impedance becomes small. Thus, the gear of a power generation rotor transmission wheel 25 and generation coil 29 are overlapped, gear outer diameter can be increased and an acceleration ratio sufficient for power generation can be ensured. Similarly, a part of clock circuit can be overlapped in plane to the generation coil 29 with relatively wide area and so this configuration is advantageous for plane layout in the case of small absolute area.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement of parts of a rotary weight wristwatch.

[0002]

2. Description of the Related Art Electronic timepieces are disclosed in Japanese Patent Application Laid-Open No. 62-49785.
As described above, a self-winding power generation clock has been invented in which a small generator generates power by the movement of a rotary weight, charges the secondary power supply, and drives the clock with the energy. For this watch,
The larger the weight of the rotating weight, the greater the input energy and the amount of power generation. Therefore, it is an issue how to efficiently secure the weight of the rotating weight. What is one-sided weight?
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 weight is the same, it can be said that it is effective to make the weight of the rotary weight as far away from the center of rotation as possible.

For this reason, in the prior art, internal parts such as a train wheel and a coil constituting the movement are formed on the center side, and no parts are arranged outside the central part. The thick portion of the rotating weight is disposed on the upper portion, and the thin portion of the rotating weight is disposed on the upper side of the built-in component portion.

Although this is an efficient arrangement,
It is necessary to consolidate the internal components of the movement in a range of diameter smaller than the thick part of the rotating weight.

[0005]

However, the following problems arise when attempting to reduce the size and thickness of a timepiece.

In order to reduce the size and thickness of the self-winding power generating watch, it is important to secure a single weight of the rotating weight even if the diameter of the movement is small. It must be as small as possible.

[0007] Among general quartz timepieces, there is a thing with a diameter of about 10 mm, and there is a sufficient possibility.

[0008] In order to keep the portable device running and to allow a sufficient amount of energy to be stored, the power consumption of the motor is reduced as much as possible and the generated power is increased as much as possible. Many need to be secured.

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

[0010] With respect to the power generation coil, it is necessary to generate a high induced voltage, effectively extract the voltage as a current, and charge the secondary power supply. The induced voltage is
Because 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. To effectively extract it as a current, it is necessary to lower the coil impedance, that is, the coil resistance. This also tends to increase the volume of the power generation coil, similarly to the timepiece coil.

Therefore, if the range of the internal components of the movement is reduced as it is for the purpose of miniaturization and thinning, the power generation performance is remarkably reduced, which is unsuitable for practical use.

[0012]

A wristwatch according to the present invention comprises at least a power supply, a circuit, a coil wound in a bar shape, a clock wheel train located substantially near the center of a movement, and a rotatable one-piece rotating shape. The rotating weight has a thick part on the outer peripheral side and a thin part on the center of rotation, and the rotating weight overlaps with the power source, the circuit, the coil, the wheel train when rotated, and the wheel train The coil is disposed so as to be located in the rotation locus range of the thin portion, and a part of the coil is positioned in the rotation locus range of the thick portion.

[0013] Also, at least a rotating weight having a rotatable single weight shape, a rotating wheel coaxially rotating with the rotating weight, a transmission wheel train meshing with the rotating wheel and transmitting rotation, and the transmission wheel having a permanent magnet. A power generating rotor that meshes with a row and rotates, wherein the rotating weight is supported by a first ball bearing, and at least one portion of the transmission wheel train or the power generating rotor is supported by a second ball bearing. I do.

[0014] At least a main plate, an external operating member operable in the axial direction, a brace for engaging with the external operating member and regulating the position, a clock wheel train located substantially near the center of the movement, and a rotatable single weight. Having a rotating weight made of a shape,
The weight and the oscillating weight are arranged on the same surface side of the base plate, and the oscillating weight has a thick portion on the outer peripheral side, a thin portion on the rotation center side, and the external operating member when rotated, the oscillating weight, It overlaps with a watch wheel train section, and the train wheel section is arranged so as to be located in the rotation locus range of the rotating weight thin portion, and a part of the weight is positioned in the rotation locus range of the rotating weight thick section. I do.

[0015]

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

In the drawing, reference numeral 1 denotes a main plate serving as a base of the movement, 2 denotes a timepiece coil, 3 denotes a stator, and 4 denotes a rotor. The rotation of the rotor 4 is transmitted to the fourth wheel 7, the third wheel 8, the second wheel 9, the minute wheel 10, and the hour wheel 11 via the fifth wheel 5. In addition, the minute wheel 10 meshes with a small iron wheel 12. These wheel train groups are supported by a wheel train receiver 13.

The one-weight rotary weight 20 is fixed to a ball bearing 22 fixed to a rotary weight receiver 21 by a rotary weight screw 23. Below the oscillating weight 20 is a oscillating weight wheel 24, which is similarly fixed. The oscillating wheel 24 is a kana part 2
The gear portion 25b meshes with the pinion of the power generation rotor transmission wheel 25 having the gear portion 25b, and the gear portion 25b meshes with the pinion 26a of the power generation rotor 26 to transmit the rotation of the rotary weight. The train wheel from the oscillating wheel 24 to the generator rotor 26 is 30 to 2
The speed is increased to about 00 times, and the rotation of the rotary weight 20 causes the power generation rotor 26 to rotate at high speed. The speed increase ratio can be freely set depending on the performance of the generator and the specifications of the timepiece. The permanent magnet 2 is attached to the power generation rotor 26.
Since the fixing member 7 is fixed, a magnetic flux having a different direction flows through the power generation stator 28 to the power generation coil 29 every time the motor rotates, and an induced voltage is generated in the coil. The end of the power generation coil 29 is connected to the pattern of the coil lead board 39, is pressed against the circuit board 37 via the circuit holding plate 38 by the set screw 44, and is electrically connected to the circuit. The power generation coil 29 and the power generation stator 28 are pressed against each other by set screws 46 and 47 to form a magnetic path. However, the connection between the coil lead board 39 and the circuit board 37 is disconnected in a plane, and the thickness is reduced.

Next, as a circuit relation, 31 is a crystal unit, 32 is a MOSIC chip, 33 is an auxiliary capacitor,
Reference numeral 34 denotes a diode for rectification, and reference numerals 35 and 36 denote 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 capacitor of the secondary power supply, and each electrode is electrically connected to the pattern of the circuit board 37 by a plus terminal (not shown) and a minus terminal. The circuit according to the present embodiment is configured such that the voltage of the secondary power
, And drives the clock stored in the auxiliary capacitor 33.

Reference numeral 14 denotes an external operation member, and a damper 15 for controlling this operation is engaged with a groove of the external operation member 14 and its position is regulated by a latch 16. Kannuki 16
Is engaged with the groove of the pinwheel 17 guided by the external operation member 14. In addition, the train wheel has a train wheel setting lever that resets the train and resets the circuit in conjunction with the movement of the external operation member 14, but is not shown. Rest 1
The upward direction of the 5 and the latch 16 is determined by the pressing retainer 18 fixed with a set screw 45. The operation of these switchings is well known and will not be described.

In the above description, the oscillating weight 20 has the thick portion 20a on the outer periphery, and takes a trajectory that rotates outside most of the internal components constituting the movement. At least a part of the power generation coil 29 overlaps with the thick portion, and in the present invention, the coil winding portion is planarly overlapped. The winding of the power generation coil 29 overlaps with the gear 25b of the power generation rotor transmission wheel 25. Also, a MOSIC chip 3 constituting a circuit
2 and the circuit board 37.

In FIG. 7, the upper tenon of the power generation rotor transmission wheel 25 constituting the power generation wheel train is guided by a bearing ball bearing 50 fixed to the rotary weight receiver 21. The bearing ball bearing 50 has an outer ring 50a that is mounted on the rotating weight receiver 21.
And the plurality of balls 50b are directly engaged with the upper tenon of the power generation rotor transmission wheel 25. Generator rotor train 25
The positioning in the upward direction is performed by a presser wheel 50C fixed to the outer ring 50a. The outer ring 50a is made of a non-magnetic material. This is to reduce the magnetic effect on the generator, but if the effect can be neglected, a magnetic material such as steel may be used. In the case where the influence is large, not only the outer ring but also other parts may be changed to a non-magnetic material. A bearing 51 is also used on the lower tenon side of the power generation rotor 26. As for the material, it is necessary to use a magnetic material and a non-magnetic material as described above, but it is desirable to use a non-magnetic material at least for the outer ring because it may be near a magnet. Bearing The bearing 51 includes an outer ring 51a, a ball 51b, and a presser wheel 51C. The outer ring 51a determines the agitation of the power generation rotor 26.

Bearings Both bearings 50 and 51 do not use a retainer and are aimed at miniaturization and cost reduction. However, there is no problem even if a retainer is used. The bearing 50 is
The vicinity of the hole of the outer ring 51a protrudes toward the ball 50b, and the clearance between the outer ring 51a and the presser wheel 50c is smaller than the outer diameter of the ball 50b. Therefore, even before the power generation rotor transmission wheel 25 is assembled, the ball 50b does not come off.
Further, since the balls are displaced to some extent before the power generation rotor transmission wheel 25 is assembled, there is a gap with the outer ring 50a, and dirt is easily removed by washing. Also in the bearing 51, since the holes formed in the outer ring 51a and the presser ring 51c are smaller than the outer diameter of the ball 51b, the ball 51 does not come off and has the same effect. Since both bearings mainly have a radial effect, the vertical play may be large.

In the present embodiment, the upper part of the power generation rotor transmission wheel 25 and
The bearing is used under the generator rotor 26 for the following reason. The power generation rotor transmission wheel 25 has a kana portion 25a protruding above the rotary weight receiver 21 in order to mesh with the rotary weight wheel 24. Accordingly, in order to adopt a general configuration in which the bearing and the base plate guide the bearing from above and below, the diameter of the bearing portion must be larger than the outer diameter, and the bearing load increases. Further, the power generation rotor 26 and the magnet 27 are
The load is increased because the force is applied to the lower tenon side. The use of bearings in these portions has the effect of reducing bearing loads and increasing power generation efficiency. The efficiency can be further improved by adopting the structure below the transmission wheel of the generator rotor or above the generator rotor.

[0024]

According to the above invention, the following effects can be obtained.

For the amount of power generation, the induced voltage generated in the coil is extracted as a current. Since the induced voltage is proportional to the number of turns of the coil wire and the amount of change in the magnetic flux, the higher the number of turns of the coil, the higher the generated voltage, which is advantageous. The amount of the induced voltage that can be taken out as a current is inversely proportional to the impedance of the coil, proportional to the induced voltage, and the impedance of the coil increases as the coil resistance increases, as is well known. It can be said that.

In the case of the conventional example, since the power generating coil 29 is disposed inside the rotation locus of the rotary weight outer peripheral thick portion 20a,
As the diameter of the oscillating weight decreases, the coil length also decreases, the number of turns decreases, and the induced voltage also decreases. To prevent this, if you try to secure the number of turns by winding a coil wire with a small wire diameter,
The coil resistance increases, and the amount of power generation decreases. However, in the present invention, since the coil winding portion and the thick portion of the rotary weight are overlapped, the thickness of the coil winding portion is reduced, but the length can be increased.

Comparing a thin long coil with a thick short coil, the former can shorten the coil wire length and reduce the coil resistance for the same number of turns. Therefore, it is possible to make an advantageous setting for power generation. In the conventional structure, it is impossible to overlap the power generation coil 29 and the gear 29b of the power generation rotor transmission wheel 25.
Gear outer diameter cannot be increased. Therefore, the speed increase ratio from the rotary wheel 24 to the power generation rotor 26 is reduced, or the number of wheel trains is increased by one to secure the speed increase ratio. However, in the present invention, the gear 2 of the power generation rotor transmission wheel 25 is used.
5b and the power generation coil 29 are superposed, so that the outer diameter of the gear can be increased, and a speed increasing ratio sufficient for power generation can be secured. Similarly, since the MOSIC chip 32 can be overlapped with the coil, it is advantageous for a planar layout of a female movement having a small absolute area.

In the present invention, the power generating coil is disposed below the thick portion of the rotary weight, but a clock coil can be disposed in the same manner. However, it is generally said that the longer the core length around which the coil is wound, the weaker the anti-magnetic property becomes. Therefore, it is necessary to increase the cross section of the magnetic core or to examine other anti-magnetic means.

Also, a bearing ball bearing 5 is provided in the power train.
Since 0 and 51 are used, the power generation efficiency is also increased. Bearing The ball bearing is a power generation rotor transmission wheel 25.
The height of the power generation rotor 26 is determined by the portion fixed to the rotary weight receiver 21 or the main plate 1. In general, setting the height at the fixed part increases the load and is not implemented.However, in the case of a watch, the load applied in the height direction is only the own weight of the wheel train, and the horizontal direction applied during power generation Force is overwhelmingly strong, and the power generation rotor is levitated by the magnetic force drawn by the power generation stator and does not hit except at the time of impact, so that the height direction can be ignored. This eliminates the need to provide the bearing with an inner ring, simplifies the structure, reduces the cost and reduces the size.

The switching is arranged outside the internal parts of the movement so that the weight overlaps the thick part on the outer periphery of the rotary weight. The rest is restricted by the height position of the external operation member, and the rotary weight thick portion escapes the external operation member in the height direction, so that the escape in the height direction is relatively easy. As a result, the space required for switching is
Since it can be arranged on the outer peripheral side of the movement, a relatively thick electric element such as the auxiliary capacitor 33 or the diode 34 can be arranged at that portion, which is effective in reducing the size.

[Brief description of the 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]

 DESCRIPTION OF SYMBOLS 1 Main plate 2 Clock coil 3 Stator 4 Rotor 5 Fifth wheel 7 Fourth wheel 8 Third wheel 9 Second wheel 10 Day wheel 11 Hour wheel 12 Small iron wheel 13 Wheel train receiver 14 External operation member 15 Bolt 17 Suspension wheel 18 Weight holder 20 Rotating weight 21 Rotating weight receiver 22 Ball bearing 23 Rotating weight screw 24 Rotating weight wheel 25 Generator rotor transmission wheel 26 Generator rotor 27 Magnet 28 Generator stator 29 Generator coil 31 Crystal unit 32 MOSIC chip 33 Auxiliary capacitor 34 Diodes 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

[Procedure amendment]

[Submission date] December 20, 1999 (1999.12.
20)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

[Title of the Invention] Power generation clock with rotating weight

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction contents]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement of parts of a rotary clock.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

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.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

Therefore, if the range of the internal components of the movement is reduced as it is for the purpose of miniaturization and thinning, the power generation performance is remarkably reduced, which is unsuitable for practical use. Therefore, an object of the present invention is to provide a power generating clock with a rotating weight that can be reduced in size and thickness while improving the characteristics of the clock coil and the power generating coil.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction contents]

[0012]

A power generating timepiece with a rotary weight according to the present invention comprises at least a rotary weight, a power generating coil for generating electric energy based on rotation of the rotary weight, a clock circuit, and a clock motor. A clock coil, wherein the power generation coil is thinner and longer than the clock coil, and at least a part of the clock circuit is arranged so as to overlap the power generation coil in a plane. Features.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

In the power generating timepiece with a rotary weight according to the present invention, the timepiece coil and the timepiece circuit do not overlap in plan.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction contents]

Further, the power generating timepiece with a rotary weight according to the present invention is characterized in that quartz units shorter than the power generating coil are arranged side by side on the outer peripheral side of the power generating coil.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

Next, as a circuit relation, reference numeral 31 denotes a crystal unit arranged on the outer peripheral side of the generating coil 29 as shown in FIG.
2 denotes a MOSIC chip, 33 denotes an auxiliary capacitor, 34 denotes a diode for rectification, and 35 and 36 denote boost capacitors. These elements are mounted on a flexible circuit board 37 to form a clock circuit. 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 capacitor of the secondary power supply, and each electrode is electrically connected to the pattern of the circuit board 37 by a plus terminal (not shown) and a minus terminal. The circuit of this embodiment employs a method disclosed in Japanese Patent Application Laid-Open No. 60-203887 in which the voltage of the secondary power supply 40 is boosted by the boosting capacitor 36 and stored in the auxiliary capacitor 33 to drive the clock.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

Further, details of the present invention will be described.

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction contents]

In the case of the conventional example, since the power generating coil 29 is disposed inside the rotation locus of the rotary weight outer peripheral thick portion 20a,
As the diameter of the oscillating weight decreases, the coil length also decreases, the number of turns decreases, and the induced voltage also decreases. To prevent this, if you try to secure the number of turns by winding a coil wire with a small wire diameter,
The coil resistance increases, and the amount of power generation decreases. However, in the power generation coil according to the embodiment of the present invention, the number of turns of the coil is ensured, and the wire diameter is increased and the total length of the coil is shortened in order to reduce the impedance of the coil. That is, the coil is formed to be long in the length direction and thin in the radial direction. By increasing the length of the entire coil in the length direction, a large number of turns can be secured. In this case, in the conventional example, the required number of turns is secured by increasing the number of turns in the radial direction, so that the coil diameter increases and the coil length accordingly increases, but in the present invention, By increasing the number of turns in the length direction, the required number of turns can be secured without reducing the wire diameter, and the radial dimension of the entire coil can be reduced, resulting in a shorter overall coil wire length. And the impedance also decreases. For this reason, a part of the power generation coil can be overlapped with the rotation locus range of the thick portion of the rotary weight.

[Procedure amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0027

[Correction method] Change

[Correction contents]

Here, a long coil having a thin overall coil,
Comparing thick and short coils, with the same number of turns, the former can shorten the coil wire length and lower the coil resistance. Therefore, it is possible to make an advantageous setting for power generation. On the other hand, in the conventional structure, since the power generation coil 29 and the gear 29b of the power generation rotor transmission wheel 25 cannot be overlapped, the outer diameter of the gear cannot be increased due to the restriction of the power generation coil. For this reason, the speed increase ratio from the rotary wheel 24 to the power generation rotor 26 is reduced, or the wheel train is increased by one step to secure the speed increase ratio. However, in the embodiment of the present invention, since the gear 25b of the power generation rotor transmission wheel 25 and the power generation coil 29 are overlapped, the outer diameter of the gear can be increased, and a speed increasing ratio sufficient for power generation can be secured. Similarly, since a part of the clock circuit can be planarly overlapped with a power generation coil having a relatively large area like the MOSIC chip 32 shown in FIGS. This is advantageous for a planar layout.

[Procedure amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction contents]

In this embodiment, the power generating coil is disposed below the thick portion of the rotary weight, but a timepiece coil can be disposed in the same manner. However, it is generally said that the longer the core length around which the coil is wound, the greater the area exposed to an external magnetic field and the weaker the anti-magnetism. Consideration is needed. Here, since the operation of the timepiece motor is based on the electromagnetic action, it is extremely important to prevent the influence of the magnetic field from the outside of the timepiece motor as much as possible. Therefore, from the viewpoint of the above-described anti-magnetism, the total length of the timepiece coil for the timepiece motor is desired to be short, and the number of turns is inevitably increased in the radial direction because the number of turns is required in the radial direction. In this case, the coil diameter is small, the total length of the coil wire is long, and the impedance is large. From the above, when the power generation coil and the timepiece coil are compared, in particular, as shown in the plan view of FIG. 1 and the cross-sectional views of FIGS.
Is formed thinner and longer than Therefore, the power generation coil has a large number of turns and has a small impedance and can secure high power generation efficiency. On the other hand, a timepiece coil has a large number of turns and a large impedance and can reduce current consumption and minimize the influence of an external magnetic field. It can be reduced. For this reason, the power generating coil may be partially disposed in the range of the rotation locus of the thick portion of the rotating weight, which does not adversely affect the diameter of the rotating weight or the thickness of the thick portion. Absent.

[Procedure amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0030

[Correction method] Change

[Correction contents]

[0030]

As described above, according to the first aspect of the present invention, first, the power generation coil is formed thinner and longer than the timepiece coil, and therefore has the following specific effects. In other words, since the number of windings in the power generation coil can be increased in the length direction, the number of windings can be secured without reducing the wire diameter, and the radial dimension of the coil can be reduced. As a result, the impedance is reduced, and the power generation efficiency can be increased. On the other hand, a watch coil has a large radial dimension and a large number of turns in the radial direction to secure the number of turns, so the length direction can be shortened and the effect of an external magnetic field can be minimized. Therefore, it is possible to prevent the operation of the timepiece motor from being adversely affected. The above dimensional relationship between the two coils, in order to maximize the characteristics of both coils in a limited timepiece space,
This is a very important relationship. Furthermore, since the power generation coil is formed to be thin in the radial direction, at least a part of the electronic components of the clock circuit can be arranged so as to overlap the power generation coil in a plane, and the dimension of the clock circuit in the cross-sectional direction is small. Since the degree of freedom is increased, the degree of freedom in the design of the clock circuit is increased, so that the stability of the circuit can be ensured and the size and thickness of the power generating clock with a rotary weight can be reduced. Further, according to the second aspect of the present invention, by arranging the timepiece coil and the timepiece circuit so as not to overlap in a plane,
Since the timepiece circuit is not arranged on the timepiece coil having a large coil diameter, the entire timepiece can be made thinner. Moreover, according to the third aspect of the present invention, since the power generation coil is long and thin, the crystal units shorter than the power generation coil can be arranged side by side on the outer circumference side, and the space on the outer circumference side of the relatively long power generation coil can be reduced. It can be used effectively and can contribute to miniaturization and thinning.

Claims (3)

[Claims] 1. A wristwatch having at least a power supply, a circuit, a coil wound in a bar shape, a clock wheel train located substantially near the center of a movement, and a rotating weight having a rotatable single weight shape, wherein the rotating weight is A thick portion is formed on the outer peripheral side, and a thin portion is formed on the rotation center side, so that when rotated, the power supply, the circuit, the coil, and the wheel train portion are overlapped, and the wheel train portion is in the rotation locus range of the thin portion. A wristwatch with a rotary weight, wherein a part of the coil is arranged so as to be located in a rotation locus range of a thick portion. 2. A transmission wheel having at least a rotating weight having a rotatable one-weight shape, a rotating wheel that rotates coaxially with the rotating weight, a transmission wheel train meshing with the rotating wheel and transmitting rotation, and a transmission wheel having a permanent magnet. A wristwatch having a power generation rotor that rotates in mesh with a row, wherein the rotating weight is supported by a first ball bearing, and at least one of the transmission wheel train and the power generation rotor.
An electronic timepiece with a oscillating weight, wherein the portion is bearing by a second ball bearing. 3. At least a main plate, an external operating member operable in the axial direction, a brace for engaging with the external operating member and regulating the position, a clock wheel train located substantially near the center of the movement, and a rotatable single weight. In an electronic timepiece having a oscillating weight having a shape, the weight and the oscillating weight are arranged on the same surface side of the base plate, and the oscillating weight has a thick portion on an outer peripheral side and a thin portion on a rotation center side, When rotated, the external operating member overlaps with the weight, the wheel train portion, the wheel train portion falls within the rotation locus range of the rotating weight thin portion, and the portion of the weight falls over the rotating weight range of the rotary weight thick portion. A wristwatch with a rotating weight, which is arranged so as to be located at