JP3223834B2 - Analog electronic clock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an analog electronic timepiece, and more particularly to an analog electronic timepiece that generates power by using kinetic energy generated by a user's operation and drives the timepiece with the generated energy. In particular, the present invention relates to power generation of an analog electronic timepiece and a structure of a timepiece coil.

[0002]

2. Description of the Related Art Conventional analog electronic watches are disclosed in
As disclosed in Japanese Patent Application Laid-Open No. 2-49785, a self-winding power generation timepiece is disclosed in which a small generator generates power by the movement of a rotary weight, charges the secondary power supply, and drives the timepiece with the energy.

In this conventional example, a small generator section is arranged such that different functional sections such as a watch wheel train section and a circuit section are independent in a plane. In the case where it is difficult to easily engage the bearing portion such as a train wheel, a dowel for preventing inclination is provided on the main plate.
Further, in order to prevent disconnection of the coil, it has not been superimposed two-dimensionally with driving parts such as gears.

Further, analog electronic timepieces are disclosed in
As disclosed in JP-A-6-107773 and JP-A-6-22989, a device has been invented in which the timepiece can be made thinner by crushing the stator and the magnetic core.

The electromagnetic core around which the generating coil is wound has a double-layer magnetic core structure having the same shape as the upper and lower parts in order to reduce the eddy current loss in proportion to the square of the plate thickness. Is going.

[0006]

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

As described above, in order to carry the analog electronic timepiece with a small generator and keep it running, and to provide a margin for energy storage, reduce the motor power consumption as much as possible and increase the generated power as much as possible. However, it is necessary to secure more power generation than consumption. For this reason, the timepiece coil, the rotary weight, the power generation coil, and the like need to have a size that satisfies the performance, and the proportion of the movement volume becomes large, which imposes restrictions on the size and arrangement of other parts. The circuit unit is a component in which an electric element such as an IC or a crystal is mounted on a circuit board, and it is necessary to secure at least the size of the electric element, and at least the outer size of the conductive part, the pattern part, the fixed part, and the like.

[0008] The power train is superimposed on other parts except the main plate in a plan view, so that a dowel for preventing the inclination from the main plate cannot be provided, and assemblability becomes very difficult. Further, a structure for preventing disconnection of the coil by overlapping the power generation wheel train and the power generation coil is required.

In the contact and fixing portion between the power generation stator and the power generation coil, the total thickness of the ground plate, the power generation stator, the electromagnetic core, and the screws cannot be suppressed below the total thickness.

[0010] The analog electronic timepiece of the present invention solves such a problem.
It is an object of the present invention to provide an analog electronic timepiece having a generator, in which the thickness is further reduced and the energy conversion efficiency is improved.

[0011]

According to a first aspect of the present invention, there is provided a power generating coil in which a coil is wound around an electromagnetic core having a multilayer magnetic core structure, and a magnetic circuit including the power generating coil. A power generating stator, wherein at least one of the electromagnetic generating cores is planarly different in shape from the other electromagnetic generating cores, and only one of the differently shaped electromagnetic generating cores is pressed against the power generating stator. It is characterized by having been done. The configuration according to claim 2 includes a power generation coil in which a coil is wound around an electromagnetic core having a multilayer magnetic core structure, and a power generation stator that forms a magnetic circuit with the power generation coil,
At least one of the electromagnetic generating cores is planarly different in shape from the other electromagnetic generating cores, and the irregularly shaped electromagnetic generating core is pressed against the power generation stator so as to overlap with at least the coil winding portion of the electromagnetic generating core. The structure according to claim 3, wherein all the layers have the same shape in plan view, wherein the coil frame for preventing the winding of the power generation coil from being disturbed is formed of any one of the electromagnetic cores. The position of the coil in the longitudinal direction is determined by the shape of the coil. According to a fourth aspect of the present invention, in any one of the first to third aspects, the irregularly shaped electromagnetic core is pressed against the power generation stator by a screw. The configuration according to claim 5 includes a timepiece coil in which a coil is wound around a magnetic core having a multilayer magnetic core structure, and a stator that forms a magnetic circuit with the timepiece coil, wherein at least one of the magnetic cores is another. The magnetic core has a different shape, and only one of the differently shaped magnetic cores is overlapped and pressed against the stator. According to a sixth aspect of the present invention,
A watch coil in which a coil is wound around a magnetic core having a multilayer magnetic core structure, and a stator forming a magnetic circuit with the watch coil, wherein at least one of the magnetic cores has a different shape from other magnetic cores, Further, the magnetic core having the different shape is overlapped and pressed against the stator, and at least all the layers of the magnetic core in the coil winding portion have the same shape in plan view. The structure described in claim 7 is the same as the structure described in claim 5 or 6.
In the above structure, the position of the coil frame for preventing winding disturbance of the timepiece coil in the coil longitudinal direction is determined by the shape of any one of the magnetic cores. An eighth aspect of the present invention is characterized in that, in any one of the fifth to seventh aspects, the irregularly shaped magnetic core is pressed against the stator by a screw.

[0012]

[0013]

[0014]

[0015]

1 and 2 are plan views of an embodiment of the present invention, and FIGS. 3 and 4 are sectional views of the embodiment.

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.

In the power train, the power generation rotor transmission wheel 25
Are arranged above the train wheel bridge 13 arranged above the power generation stator 28. This is because a small gap is provided so as not to contact the gear portion of the power generation rotor transmission wheel 25 during the power generation rotation, the inclination of the power generation rotor transmission wheel 25 is prevented, and the upper shaft portion of the power generation rotor transmission wheel 25 is pivotally supported. This is for improving the assemblability of the weight receiver 21.

The power generating coil 29 overlaps the power generating rotor transmission wheel 25 and the train wheel bridge 13 in a plane. This is achieved by the train wheel bridge 13 and the generator rotor transmission wheel 25 as described above.
This is to prevent inclination of the power generation rotor transmission gear 25 and disconnection between the gear portion of the power generation rotor transmission wheel 25 and the power generation coil 29.

The lower shaft portion of the power generation rotor transmission wheel 25 passes through the power generation stator 28 or the power generation stator 28.
It is arranged near the aide. The shape of the hole through which the shaft portion of the power generation rotor transmission wheel 25 of the train wheel bridge 13 penetrates is similar to the through hole of the power generation stator 28, and a slope is provided on the gear side of the power generation rotor transmission wheel 25. This is the generator stator 28
Forms a magnetic circuit with the power generation rotor 26 and the power generation coil 29, and the amount of magnetic flux linkage to the power generation coil 29 is
Since it is determined by the minimum saturation magnetic flux amount of the magnetic circuit cross section, it is necessary to secure a sufficient cross-sectional area in the magnetic circuit so that the magnetic flux passes without resistance and without leakage, and it is desired to make the through hole of the power generation stator 28 as small as possible. For this reason, it is difficult to incorporate the power generation rotor transmission wheel 25 into the through hole of the power generation stator 28. As a solution to this problem, the present invention provides a train wheel train 13 with a slope and a generator rotor transmission wheel 25.
This facilitates picking-up of the shaft part, and improves assemblability. or,
In this example, since the power generation coil 29 and the shaft portion of the power generation rotor transmission wheel 25 are close to each other, there is a possibility that the power generation coil 29 may hit the shaft portion and break when assembled. To prevent this disconnection, the train wheel bridge 13
Is arranged to cover the upper part of the power generation coil 29.

The shape of the hole in which the power generation rotor 26 of the train wheel bridge 13 is incorporated is larger than the outermost diameter of the power generation rotor 26. This is because, in the present invention, as described above, the train wheel bridge 13 is disposed below the power generation rotor transmission wheel 25, and the power generation rotor 2 meshes with the power generation rotor transmission wheel 25 gear as shown in FIG.
This is because the sixth kana is smaller than the magnet diameter, so that the order of assembling the movement is the order of the train wheel bridge 13, the power generation rotor 26, and the power generation rotor transmission wheel 25.

Since the permanent magnet 27 is fixed to the power generation rotor 26, a magnetic flux having a different direction flows through the power generation stator 28 and flows to the power generation coil 29 every time it 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 and set screws 44
, And is in pressure contact with the circuit board 37 via the circuit holding plate 38, and is electrically connected to the circuit. Generator coil 29 and generator stator 28
Are pressed by set screws 46 and 47 to form a magnetic path.

As shown in FIG. 4, the generator stator 28 is provided with a bent portion in the vicinity of the fixed portion and the contact with the generator coil 29, and a thin-walled shape such as salinity processing or rolling process on the side opposite to the contact surface of the generator coil 29. Is provided. In addition, the power generation coil 2
9, the contact surface of the power generation stator 28, which is contacted and fixed with the ground plate 1 (hereinafter referred to as the lower surface of the power generation stator 28 fixing portion), is the same as or lower than the lower surface in the vicinity of the power generation rotor 26. .

However, in the claims relating to this arrangement, the motor is constituted by the stator of the step motor. However, since the structure is basically the same, the description will be made with the generator stator of the generator. This is because adopting a bearing structure such as a ball bearing in the upper and lower mortise portions of the power generation wheel train to which the side pressure is applied during the power generation rotation has the effect of reducing the bearing load and improving the power generation performance. For this reason, in order to incorporate a ball bearing having a larger number of parts and a larger size than a hole stone, it is necessary to use the power generation stator 2.
It is necessary to secure the space at the lower part of the power generator 8, and the lower surface of the power generation stator 28 near the power generation rotor 26 is located at a relatively high position. The contact and fixing portions of the power generation coil 29 of the power generation stator 28 are thin. The thickness of the base plate 1 on the lower surface of the fixed portion of the generator stator 28 is set to a minimum thickness enough to hold the screw pins 30 for fixing the generator stator 28 and the generator coil 29, thereby reducing the thickness of the movement. In addition, by providing the thin portion of the power generation stator 28 on the side opposite to the contact surface with the power generation coil 29, the magnetic contact can be stably performed without causing distortion, inclination, and unevenness due to the thinning of the contact surface.

The fixed portion of the generator stator 28 and the generator rotor 2
The lower surface of the power generation stator 28 in the middle of the vicinity of the power generation stator 6 is positioned lower than the lower surface of the power generation stator 28 fixing portion. This is because, as described above, the fixed portion of the generator stator 28 and the vicinity of the generator rotor 26 require a certain height in cross section, but in the intermediate portion, it is necessary to pass magnetic flux without magnetic resistance. There is no problem even if the thickness of the base plate 1 is thin. Because of this,
The thickness of the base plate 1 is an efficient component layout in which a portion necessary for the function is attached and an unnecessary portion is provided with another component.

As shown in FIGS. 1 and 4, the power generating coil 29 has a two-layer magnetic core structure of the electromagnetic cores 29a and 29b, and the upper and lower electromagnetic cores have different shapes. However, at least the magnetic core shape of the coil winding portion is the same. In addition, the power generation coil 2
9, only the upper electromagnetic core 29 a of the upper magnetic core is in contact with the generator stator 28 in the contact portion with the generator stator 28. This is because the two-layer core reduces the eddy current loss in proportion to the square of the thickness of the core, improves the power generation performance, and contacts the power generation stator 28 with only the single-layer core. , Making the movement thinner.
Further, since the contact portion with the power generation stator 28 is thinned without performing the crushing process, the contact surface is not uneven, and the magnetic conduction can be stably performed. Naturally, the power generating coil 29 is not limited to a two-layer magnetic core, but is also applicable to a multilayer magnetic core structure of three or more layers, and is not limited to the power generating coil of the present example, but is also applicable to a watch coil of a motor. The movement can be made thin even if the magnetic core of the lowermost layer is not made different in shape in plan view and the contact portion with the generator stator is made thin.

The generating electromagnetic core 29a of the present invention is composed of the generator stator 2
No. 8 is in contact with the thin portion and the thick portion. This is because, as described above, the magnetic flux is transmitted through the contact portion from the thick portion of the power generation stator 28 to the electromagnetic core 29 without any resistance and without leakage.
a to prevent the power generation performance from deteriorating.

The coil frame 29c of the power generation coil 29 of the present invention
, The positioning in the longitudinal direction of the coil is performed by only one layer of the electromagnetic core 29a. This is due to the fact that when the magnetic core is attached, misalignment occurs due to tolerances of parts and jigs. If the coil is displaced in the longitudinal direction of the coil, the coil winding length becomes short, the number of turns is small, or the coil characteristic with a large resistance value is poor. It becomes a coil. If positioning is performed using only one of the magnetic cores, the coil can be wound without being influenced by the displacement of the magnetic core, and as a result, the power generation performance can be improved.

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 a secondary power supply, and each electrode is connected to a circuit board 37 by a positive terminal and a negative terminal.
Is electrically connected to the pattern. In the circuit of this embodiment, the voltage of the secondary power supply 40 is boosted by the boosting capacitor 36 and stored in the auxiliary capacitor 33 to drive a clock.
887 is adopted.

Referring to FIG. 3, the circuit board 37 includes a power generation rotor 2 which is disposed below the rotary weight receiver 21 in cross section.
6. The size of the circuit board is expanded by overlapping the generator components such as the generator rotor transmission wheel 25, the generator stator 28, and the generator coil 29 in a plane, and the layout of the electric elements is enabled. Further, since the power generation wheel train and the like are located at the center of the movement, when the plane range of the power generation wheel train becomes the circuit board, the pattern can be easily routed. Further, the circuit board can be reduced in size by facilitating the routing of the pattern.

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 peripheral portion and takes a trajectory that rotates outside most of the built-in 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. 3, 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. In this case as well, it is necessary to use a magnetic material or a non-magnetic material as described above, but it is desirable to use a non-magnetic material at least for the outer race 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, but use of a retainer does not pose a problem. The bearing 50 is
The vicinity of the hole of the outer ring 50a protrudes toward the ball 50b, and the clearance with the presser ring 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 embodiment, the upper part of the generator rotor transmission wheel 25 is
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. It is to be noted that the efficiency can be further improved by adopting the device under the transmission wheel of the power generation rotor or above the power generation rotor.

[0036]

According to the analog electronic timepiece of the present invention, the magnetic core around which at least one of the power generation coil and the timepiece coil is wound has a multilayer structure composed of a plurality of magnetic cores, and By reducing the shape of at least one of the cores constituting the multilayer structure from the shape of the other cores constituting the multilayer structure, eddy current loss proportional to the square of the thickness of the core is reduced. Thus, the energy conversion performance can be improved.

Further, by arranging only one of the magnetic cores on the power generation stator or the timepiece stator in a planar manner, the movement can be made thinner.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the 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.

[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 30 Screw pin 31 Crystal unit 32 MOSIC chip 33 Auxiliary Capacitor 34 Diode 35, 36 Boost capacitor 37 Circuit board 38 Circuit holding plate 40 Secondary power supply 41 Negative terminal 45, 46, 47 Set screw 50, 51 Bearing ball bearing

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) G04C 3/00 G04C 3/14 G04C 10/00

Claims (8)

(57) [Claims] 1. A power generating coil having a coil wound around an electromagnetic core having a multilayer magnetic core structure, and a power generating stator forming a magnetic circuit with the power generating coil, wherein at least one of the electromagnetic cores is another electromagnetic core. An analog electronic timepiece having a different shape in plan view, wherein only one layer of the electromagnetic core having the different shape is overlapped and pressed against the generator stator. 2. A power generating coil having a coil wound around an electromagnetic core having a multilayer magnetic core structure, and a power generating stator constituting a magnetic circuit with the power generating coil, wherein at least one of the electromagnetic cores is another electromagnetic core. And the electromagnetic core of the different shape is overlapped and pressed against the generator stator, and at least all layers in the coil winding portion of the electromagnetic core have the same planar shape. An analog electronic clock characterized by the following. 3. The analog electronic timepiece according to claim 1, wherein a position of the coil frame for preventing winding disturbance of the power generation coil in a longitudinal direction of the coil is determined by a shape of any one of the electromagnetic cores. . 4. The analog electronic timepiece according to claim 1, wherein the irregularly shaped electromagnetic core is pressed against the power generation stator by a screw. 5. A timepiece coil having a coil wound around a magnetic core having a multilayer magnetic core structure, and a stator forming a magnetic circuit with the timepiece coil, wherein at least one of the magnetic cores is different from another magnetic core. An analog electronic timepiece having an irregular shape, wherein only one of the irregularly shaped magnetic cores is pressed against the stator. 6. A watch coil in which a coil is wound around a magnetic core having a multilayer magnetic core structure, and a stator forming a magnetic circuit with the watch coil, wherein at least one of the magnetic cores is different from another magnetic core. An analog electronic timepiece having a different shape, wherein the magnetic core having the different shape is overlapped and pressed against the stator, and at least all layers of the magnetic core in a coil winding portion have the same shape in a plane. 7. The analog electronic timepiece according to claim 5, wherein the position of the coil frame for preventing winding of the timepiece coil in the coil longitudinal direction is determined by the shape of one of the magnetic cores. . 8. The analog electronic timepiece according to claim 5, wherein the magnetic core having a different shape is pressed against the stator by a screw.