JP2000147159A - Watch with oscillating weight - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain small-sizing and thinning of a watch by forming the oscillation center side of an oscillating weight thin and the periphery side thick and arranging the containing parts constituting a movement under the thin part and at least a part of generation coil under the thick part. SOLUTION: The oscillation center side of an oscillation weight 20 consisting of one side weight is formed thin and outer side thick. Under the oscillation track region of thin part, a power source part (secondary battery) 40, a coil for watch 2, a watch train wheel part (fifth wheel and pinion 5 to minute wheel 10, etc.), and a generation train wheel part (generation rotor transmission wheel 25, generation rotor 26, generation stator 28, etc.), which are desired to ensure thickness and raise the performance, are arranged. Under the oscillation track region of thick part, at least a part of generation coil which may be thin is arranged. By this, all parts can be arranged flatly and efficiently without lowering each characteristic of whole watch.

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.

[0003] The amount of single weight is represented by the product of the weight of the rotating weight and the distance from the center of rotation to the center of gravity of the rotating 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.

[0006]

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 generation 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.

[0008] Among general quartz timepieces, there is a thing with a diameter of about 10 mm, and although there is a sufficient possibility, since it is a self-winding watch, it is subject to the following restrictions.

[0009] 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, but this tends to increase the coil volume.

In addition, it is necessary to generate a high induced voltage for the power generating coil, 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 built-in parts 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 actual use.

[0013]

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.

[0014] Further, at least a rotating weight having a rotatable one-weight shape, a rotating wheel coaxially rotating 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 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.

[0015] 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.

[0016]

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

In FIG. 1, 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 single-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 a pinion portion of the power generation rotor transmission wheel 25 having the gear portion 25b, and the gear portion 25b meshes with a pinion portion 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 operating member, and a damper 15 for controlling this operation is engaged with a groove of the external operating 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 transmission 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 this example, the upper part of the generator rotor transmission wheel 25
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.

[0025]

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 generation 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 and long coil with a thick and short coil, the former can shorten the coil wire length and reduce the coil resistance with 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. 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 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 arranged below the thick portion of the rotary weight, but it is also possible to arrange the timepiece coil 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.

Further, the 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.

As for the switching, the weight is disposed 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] January 19, 2000 (2000.1.1)
9)

[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] 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 a component arrangement of a timepiece with a rotary weight.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

[0013]

A timepiece with a rotating weight according to the present invention comprises at least a power supply unit, a timepiece coil, a timepiece wheel train,
In a timepiece with a power generating coil, a power generation wheel train, and a rotary weight having a rotatable one-weight shape, the rotary weight has a thin portion formed on a rotation center side and a thick portion formed on an outer peripheral side, In the rotation locus range of the part, the power supply unit, the watch coil, the clock wheel train unit, and the power generation wheel train unit are arranged, and in the rotation locus range of the thick part, at least a part of the power generation coil is arranged. It is characterized by having.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction contents]

Further, the power supply section and the watch wheel train section do not overlap in a plane. Further, at least a part of the power supply unit and the power generation wheel train unit are overlapped in a plane. Moreover, at least a part of the power generation wheel train portion and the power generation coil overlap in a plane. Alternatively, at least a part of the power generation wheel train portion and at least a part of the watch wheel train portion overlap on a plane. In addition, the timepiece train wheel section and the power generation wheel train section are disposed substantially at the center of the timepiece, and the power supply section, the timepiece coil, and the power generation coil are disposed substantially at the outer peripheral side of the timepiece. It is characterized by being. Further, the power generation coil is thinner than the watch coil,
It is characterized by being formed long.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

Further, the crystal unit is arranged in a rotation locus range of the thin portion.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0025

[Correction method] Change

[Correction contents]

The above embodiment has the following effects.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0029

[Correction method] Change

[Correction contents]

Here, in the present invention, the power supply unit in which the thickness is to be secured and the performance thereof is to be improved in the rotation locus range of the thin portion of the rotary weight,
Since the clock coil, the clock wheel train section, and the power generation wheel train section are arranged, their characteristics can be improved, and the rotation locus range of the thick portion of the rotating weight can be thin (thin). Since at least a part of the coil is arranged, the entire timepiece can be efficiently arranged in a plane and in a cross-section without deteriorating the characteristics of the entire timepiece, and a small and thin timepiece with a rotating weight can be obtained. In this case, the watch train wheel section and the power train wheel section are disposed substantially at the center of the watch, and the power supply section, the watch coil, and the power generation coil are disposed substantially at the outer peripheral section.
It is easy to place the hands at the center of the watch, making it easy to see the hands.Also, the rotating weight can be configured to rotate around the center of the watch, so that the movement of the user can be efficiently linked to power generation. . Further, the power supply unit, the watch coil, and the power generation coil, which are relatively large parts, do not need to be arranged at the center part, and are arranged at the outer peripheral part. Furthermore, since the power supply unit can be arranged so as not to overlap the watch train unit in a plane, the watch train unit can be arranged in the center without being hindered, and both can be dispersed in a plane, and the thickness can be reduced.
Since the power generation coil can be formed to be thin, the power generation wheel train may overlap the power generation coil in a plane, and an electromotive force is generated in the power generation coil by the power generation wheel train. . As described above, the watch wheel train and the power train wheel have the merit of being arranged almost in the center of the timepiece. Can be taken. The power generation coil is thinner and longer than the clock coil, so that the power generation coil can secure the number of turns of the winding and increase the power generation efficiency. The power consumption of the motor is reduced, and the risk of receiving an external magnetic field due to the short coil length is reduced. Since the crystal unit is also a relatively large portion, by arranging it within the rotation trajectory of the thin portion, the thickness can be further reduced. Although the power generating coil is arranged in the rotation locus range of the thin portion of the rotary weight, a part of the power generating coil is also arranged below the rotary locus range of the rotary weight thick portion. On the other hand, it is also possible to similarly arrange the timepiece coil in the rotation locus range of the thick portion of the rotating weight. However, in general, when the length of the magnetic core around the coil becomes longer,
Since it is said to be weak against magnetic resistance, it is necessary to increase the cross section of the magnetic core or to examine other magnetic resistance means.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction contents]

As for the switching, the weight is disposed 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.

As described above, according to the present invention, it is possible to obtain a clock with a rotating weight that is small and thin overall while ensuring high clock performance.

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