JP2002062382A - Charging device for electronic time piece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charging device capable of easy connection between a time piece and the charging device and supplying electric power all the time. SOLUTION: The charging device of this invention comprises a solar cell 914 to be a power source of the charging device 900, a chargeable storage member, an anode side electrode terminal 912a contacting the upper shell of the time piece body 200 and a cathode side electrode terminal 910 contacting the back lid 226 of the time piece 200. An upper case 902 and a lower case 904 open and close with a support shaft 916 and contact pressure for contacting the terminals of the anode and the cathode to the time piece 200 is given by a repulse spring 918 to be conductive.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a charging device for an electronic timepiece.

[0002]

2. Description of the Related Art Conventionally, a secondary battery or a capacitor is charged with energy generated by a solar power generator built in an electronic timepiece, a thermal power generator, or a power generator that rotates a rotor using a rotating weight to generate power. An electronic timepiece that is used as energy for clock driving, or an electronic clock that generates electric power by means of a coil built into the clock using electromagnetic induction and charges power storage means to generate energy for clock driving, as seen in JP-A-49-75377. As seen in watches and Japanese Patent Laid-Open No. 51-30773,
A method of providing a charging terminal on a watch case and charging with an external power supply, or as shown in JP-A-5-11072, providing an electrode on the back of the watch, guiding the watch case with a positioning member, and positioning the electrode terminal in a relative position. A method of charging with a provided charger and the like are known.

[0003]

An electronic timepiece having a power storage means needs to be charged using a power generation means such as a solar power generator. Power generation is not always performed, and the power storage means may consume all the stored power.
The power generated by the solar generator must be kept in a bright place for a certain period of time, and cannot be charged in a dark place such as at night. In addition, the solar generator must be placed on the dial, which limits design. An electronic timepiece equipped with a thermoelectric generation unit is designed to be carried on an arm to generate heat using energy of the arm as energy and to charge a power storage unit. Therefore, when the portable device is not carried for a long time, all the power stored in the power storage means is consumed, and it takes time to recharge the battery. The method of charging with an external power supply requires that a terminal connected to the external power supply be provided in the timepiece, and there is a problem that the structure of the timepiece case becomes complicated. When the shape of the watch case and the charging terminal are different, there is a problem that the position of the watch guide portion of the charger or the position of the charging terminal must be changed.

Accordingly, an object of the present invention is to solve the conventional problems and to provide a charging device that can easily connect a timepiece to a charging device and can always supply power.

[0005]

According to the present invention, a positive terminal of a charging device is provided on an upper case, which is in contact with an upper body of a timepiece, and a negative terminal of the charging device is provided on a lower case. This is a watch charging device that contacts the back cover of the watch.

Further, the present invention is a charging device for an electronic timepiece using a solar cell provided on the outer periphery of an upper case as a power source of the charging device.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

An electronic timepiece used for the charging device according to the present invention is preferably as follows. This electronic timepiece includes a chargeable power storage member that constitutes a power source for operating the timepiece. A clock driving circuit for driving a clock displays time-related information based on a time-related signal output from the clock driving circuit. The timepiece of the present invention includes an upper body made of a heat conductive and conductive material, and a back cover made of a heat conductive and conductive material. The thermoelectric generator unit contains one or more thermoelectric elements that generate an electromotive force based on the Seebeck effect, and includes a first heat transfer plate that constitutes a heat absorbing plate, constitutes a heat sink, and
A second heat transfer plate configured to transfer heat to the upper body is included. A power supply operation control circuit is provided for storing the electromotive force generated by the thermoelectric generator unit in the power storage member, and a connection member for establishing electrical conduction with the case back is provided. The heat conductive spacer is made of a material having heat conductivity. A heat conductive spacer is arranged to contact the first heat transfer plate of the thermoelectric generator unit and the inner surface of the back cover. A heat insulating member having a heat insulating property is provided, and the heat insulating member is configured to insulate the back cover and the upper body and to electrically insulate. In the timepiece of the present invention, the timepiece drive circuit can be operated by the power storage member, and
It is preferable to be configured to be able to operate directly by the electromotive force generated by the thermoelectric generator unit. Also,
The connection member provided in the power supply operation control circuit is configured to electrically connect to the back cover, and the power storage member is configured to be connected to the upper body. External power supply can be facilitated. With this configuration, it is possible to effectively utilize the electromotive force generated by the thermoelectric generator unit, and to facilitate external power supply. Further, in the timepiece of the present invention, the heat conductor is configured to be able to contact the second heat transfer plate of the thermoelectric generator unit to transfer heat from the second heat transfer plate. It is preferable that the heat conductor is configured to be able to transmit heat to the upper body. Further, the present invention, in a timepiece equipped with a thermoelectric generation unit, a first heat transfer plate forming a heat absorbing plate, a thermoelectric element generating an electromotive force by the Seebeck effect, and a second heat transfer plate forming a heat sink. And a back lid made of a thermally conductive material, a back lid made of a thermally conductive material, and arranged so as to be able to conduct heat with the back lid and the first heat transfer plate. A heat conductive spacer, a heat conductor arranged so as to conduct heat with the second heat transfer plate, an upper body arranged so as to conduct heat with the heat conductor, and a clock power supply. I do. A power storage member for storing the electromotive force generated by the thermoelectric generation unit, and a display member for displaying information on time or time by operating by the electromotive force generated by the thermoelectric generation unit or the power storage member. It was configured to have.

A charging device according to the present invention includes a power generator and a power storage member for storing power from the power generator, a charging control circuit for controlling charging of the power from the power generator to the power storage member, and a charging power contacting the upper body to charge the power. A positive electrode terminal to supply, and a negative electrode terminal to contact the back cover and supply charging power. A positive electrode terminal in contact with the upper body is connected to a positive electrode of a charge control circuit,
The negative electrode terminal in contact with the back cover is connected to the negative electrode of the charge control circuit. A timepiece fixing member having an inclined surface for guiding a timepiece body, and a supporting member supporting the timepiece and having a window for a negative electrode terminal. The fixing member is rotatably press-fitted into a support bearing of the lower case by a support shaft that is a center of rotation of the upper case. Return springs are provided at both ends of the support shaft to generate a force in a direction to close the upper case. By incorporating the timepiece, the decorative edge of the electronic timepiece is electrically connected to the positive electrode terminal of the charging device by the force of the return spring. Further, the negative electrode terminal is configured to conduct to the back cover. By the return spring provided on the rotation supporting portion of the upper case, the contact between the negative electrode terminal and the decorative edge of the watch body, and the positive electrode terminal and the back cover are surely brought into contact, and charging becomes possible.

(1) Structure of an embodiment of an external case of a timepiece provided with a thermoelectric generation unit according to the present invention The structure of a timepiece provided with a thermoelectric generation unit according to the present invention will be described.

Referring to FIG. 1 and FIG. 2, a complete watch of a timepiece including a thermoelectric generator unit according to the present invention, that is, a watch body 200 is provided with an outer case 202 and a movement 20.
4 and a crown 214.

The outer case 202 includes an upper body 220, a decorative edge 222, a lower body 224, a back cover 226, and a glass 2.
28. The upper body 220 is made of a thermally and electrically conductive material. The upper body 220 is preferably made of brass, stainless steel or the like. The decorative edge 222 is attached to the upper body 220, but the decorative edge 222 need not be provided. The decorative rim 222 is preferably made of brass or stainless steel. The lower trunk 224 is made of a material having good heat insulating properties. That is, the lower trunk 224 is formed of a heat insulating member for thermally insulating the upper trunk 220 and the back cover 226. The lower body 224 is preferably made of plastic such as U-polymer or ABS resin. The back cover 226 is made of a thermally and electrically conductive material. The back cover 226 is preferably made of a metal such as stainless steel. The frame 212 is made of, for example, plastic. Glass 228 is attached to upper body 220.

The movement 204 includes a power supply, a clock drive circuit that operates with the power supply and drives a clock,
It is provided with a converter such as a step motor that operates by a signal output from the clock drive circuit, a wheel train that rotates based on the operation of the converter, and a switching mechanism for correcting the position of the hands 210. . The hands 210 are attached to the train wheel, and display time or time information by rotating the train wheel. The hands 210 include, for example, an hour hand, a minute hand, and a second hand. The movement means a mechanical body including a part for driving a timepiece.

With respect to the movement, the side with the back lid 226 is called the “back lid side” of the movement,
The side with 8 is referred to as the "glass side" of the movement. The dial 208 is located on the “glass side” of the movement 204. The inner frame 212 is attached from the “back lid side” of the movement 204. (2) Structure of power generation block with thermoelectric power generation unit used in embodiment of timepiece provided with thermoelectric power generation unit according to the present invention Referring to FIGS. The power generation block 206 including the thermoelectric generation unit to be used includes a thermoelectric generation unit 180, a booster circuit block 240, a circuit insulating plate 242, and a heat conductive plate 24.
4 and a power generation block frame 246.

Referring to FIG. 10, the heat conducting plate 244 is a plate-like member having a substantially circular outer peripheral shape, and is made of a material having heat conduction and conductivity. Preferably, the heat conducting plate 244 is made of a metal such as copper or brass. It is preferable that the heat conducting plate 244 be formed in a flat shape and not be bent. With this configuration, the heat conductive plate 244 can be manufactured with a simple processing step.

Referring to FIG. 11, the circuit insulating plate 242
Is a thin plate-like member having a substantially circular outer peripheral shape, and is made of a material having electrical insulation. Circuit insulating plate 242
Is preferably made of a plastic such as polyimide or polyester.

Referring to FIG. 12, power generation block frame 2
Reference numeral 46 denotes a member having a substantially circular outer peripheral shape, which is made of a material having electrical insulation. Power generation block frame 24
6 is preferably made of a plastic such as polycarbonate or polyacetal. Three screw pins 246a-2
46c is fixed to the power generation block frame 246.

Referring to FIG. 13, booster circuit block 2
40 includes a booster circuit board 250 having a substantially circular outer peripheral shape. The booster circuit board 250 is made of, for example, a glass epoxy board or a polyimide board. A boosting integrated circuit 252 for forming a boosting circuit, and a plurality of capacitors 2
60, a tantalum capacitor 262, a plurality of diodes 264, and a negative lead terminal 800 are mounted on the booster circuit board 250.

Referring to FIG. 14, the thermoelectric generation unit 18
0 has a lead substrate 130. Output patterns 130t1 and 13t of the thermoelectric generator unit are provided on the lead board 130.
0t2 is provided.

Referring again to FIG. 3 to FIG. 9 and FIG. 14, when manufacturing the power generation block 206, the guide pins 170c and 170d are inserted into the heat conductive plate 244 and the outer surface of the second heat transfer plate 170 is formed. The thermoelectric generation unit 180 shown in FIG. 14 is attached to the heat conduction plate 244 while being in contact with the heat conduction plate 244. The output patterns 130t1 and 130t2 of the lead board 130 of the thermoelectric generation unit 180 are raised by the thermoelectric generation lead terminal set screw 290.
The lead substrate 130 is fixed to the power generation block frame 246 by contacting the pattern. In this state, the booster circuit board 250, the circuit insulating plate 242, and the heat conductive plate 244 are interposed between the lead board 130 and the power generation block frame 246. As a result, the output patterns 130t1 and 130t2 of the lead board 130 are
Is conducted. Further, the heat conductive plate 244 is separated from the power generating block 24 by two heat conductive set screws 292.
Fix to 6. (3) Portable structure for implementing a timepiece equipped with a thermoelectric generation unit according to the present invention. Referring to FIG. 204 is installed on the back cover side. The power generation block 206 is disposed on the back cover side of the movement 204, and is fixed to the upper body 220 by a power generation block set screw 310. The heat conductive spacer 320 is arranged on the back cover side of the thermoelectric generator unit 180. Back lid 226
Is fixed to the lower trunk 224. In this state, the heat conducting spacer 320 is arranged such that one surface thereof contacts the first heat transfer plate 120 of the thermoelectric generator unit 180 and the other surface thereof contacts the inner surface of the back cover 226.

Referring to FIG. 15, in the embodiment of the timepiece having the thermoelectric generation unit according to the present invention, the movement 204 includes a circuit block 350 to which a timepiece driving integrated circuit for controlling the operation of the timepiece is mounted. . A portion of the back cover side surface of the circuit block 350 is disposed so as to face a portion of the glass side surface of the power generation block frame 246.

Referring to FIG. 16, the boost circuit lead terminal 216 is made of an elastic material such as spring steel and has the shape of a coil spring.

Referring again to FIG. 15, one end of the booster circuit lead terminal 216 is in contact with the pattern of the booster circuit board 250, and the other end is in contact with the pattern of the circuit block 350. The boost circuit lead terminal 216 is connected to the pattern of the boost circuit substrate 250 and the circuit block 350 in a compressed state.
Pattern is conducted. Negative lead terminal 8
00 has one end in contact with the pattern of the booster circuit board 250 and the other end in contact with the back cover 226. The negative lead terminal 800 conducts the pattern of the booster circuit board 250 and the back cover 226 in a compressed state.

Referring to FIG. 17, in the embodiment of the timepiece provided with the thermoelectric generation unit according to the present invention, eight booster circuit lead terminals 216 are provided, each of which has a pattern of eight booster circuit boards 250. And the pattern of the eight circuit blocks 350 are conducted. Two of these booster circuit lead terminals 216 are provided for transmitting a clock signal for the booster circuit, one is provided for transmitting a charge switching signal, and one is provided for transmitting a power generation detection signal. Two are provided for transmitting a secondary battery voltage detection signal, one is provided for a positive electrode, and one is provided for GND (ground).

Referring to FIG. 18, booster circuit block 2
40, the circuit insulating plate 242, and the heat conductive plate 244 are interposed between the lead substrate 130 and the power generation block frame 246, and the lead substrate 130 is
Fix to 46. The lead substrate 130 is fixed to the power generation block frame 246 by screwing a thermoelectric generation unit lead terminal set screw 290 to a screw pin 246 a provided on the power generation block frame 246.

Referring to FIG. 19, upper trunk 220 has a convex portion 220a protruding in the direction of the back cover. The convex portion 220a is formed in a ring shape substantially along the circumference. That is, the protruding portion 220a is disposed outside the movement of the timepiece substantially along the outer periphery of the movement. The heat conductive plate 244 has its glass side surface in contact with the convex portion 220 a of the upper body 220. The heat conduction plate 244 is a flat member, and the production of the heat conduction plate 244 does not require bending. The heat conductive plate 244 is fixed to the upper body 220 by screwing the heat conductive set screw 292 to a male screw provided on the upper body 220. Since the heat conduction plate 244 is in contact with the upper body 220, heat transmitted from the thermoelectric generator unit 180 is transmitted to the convex portion 220 a of the upper body 220 through the heat conduction plate 244. Further, since the heat conduction plate 244 and the upper body 220 are made of a conductive material, they are electrically connected.

Referring to FIG. 20, the heat conductive spacer 32
0 is the first heat transfer plate 1 of the thermoelectric generator unit 180 on one side.
20 and the other area is in contact with the inner surface of the case back 226.

Referring to FIG. 21, the heat conductive spacer 32
0 is configured in such a shape as to partially cut off a circle.
The shape of the heat conductive spacer 320 is determined so as to correspond to the shape of the first heat transfer plate 120. Thermal conductive spacer 320
Is made of a material with good thermal conductivity. Heat conductive spacer 3
20 is preferably made of a silicone rubber sheet.

Referring to FIG. 20, the thermoelectric generation unit 18
When 0 is attached to the timepiece, the gap T3 between the back cover side surface 180f of the thermoelectric generator unit 180 and the inner surface 226f of the back cover 226 does not have a constant value due to variations in dimensions of related components. That is, the thickness of the upper body 220, the thickness of the heat conduction plate 244, the thickness of the thermoelectric generator unit 180, the position of the inner surface 226f of the back cover 226, the lower body 224
Has a tolerance (variation in manufacturing dimensions), so that the surface 18 on the back lid side of the thermoelectric generation unit 180
0f and an inner surface 226f of the back cover 226
3 also varies. Therefore, the back cover 226 cannot be fixed to the lower trunk 224 so that the back cover side surface 180f of the thermoelectric generator unit 180 and the inner surface 226f of the back cover 226 are in direct contact. However, the heat conductive spacer 3
Since the heat conductive spacer 320 is compressible, if the heat conductive spacer 320 is arranged between the back cover side surface 180 f of the thermoelectric generator unit 180 and the inner side surface 226 f of the back cover 226, the heat conductive spacer 320 is compressed, and the heat conductive spacer 320 is compressed. Power generation unit 1
The first heat transfer plate 120 of 80 and the back cover 226 can be made heat conductive.

Referring to FIG. 22, the back cover 226 is fixed to the lower body 224 by screwing a set screw 372 to the male screw provided on the lower body 224. It is preferable to provide a plurality of, for example, four back lid set screws 372. A packing 374 is disposed between the upper body 220 and the lower body 224, and a packing 376 is provided between the back cover 226 and the lower body 224.
And placed between.

Referring to FIGS. 23 and 24, a power supply for the timepiece, that is, a secondary battery 600 is provided in the movement 204. The secondary battery 600 includes a thermoelectric generation unit 180
Storage member 420 for storing the electromotive force generated by
Is configured. It is preferable that the secondary battery 600 be constituted by a chargeable battery such as an ion lithium secondary battery, for example. In addition, instead of the secondary battery 600, a chargeable capacitor can be used. Switch spring 802
Is in contact with the positive electrode side of the secondary battery 600. The spring 802a provided on the switch spring 802 is
It is provided at a position where it comes in contact with

The movement 204 is a circuit block 35
0 is provided. A clock driving integrated circuit 630 for controlling the operation of the clock is attached to the circuit block 350. The clock driving integrated circuit 630 includes a clock driving circuit 418. A crystal oscillator 602 constituting a source vibration is attached to the circuit block 350. Clock driving integrated circuit 630
Includes a clock driving oscillation circuit, a clock driving frequency dividing circuit, and a motor driving circuit.

The movement 204 includes a switching mechanism including a winding stem 632, a shim (not shown), a bolt (not shown), and a ratchet (not shown), and the coil block 6.
10, a converter including a stator 612 and a rotor 614;
Fifth wheel 616, fourth wheel 618, third wheel 620, second wheel 6
22, a wheel train including the minute wheel 624 and the hour wheel 626. A second hand 640 is attached to the fourth wheel & pinion 618. The minute hand 642 is attached to the center wheel & pinion 622. The hour hand 646 is attached to the hour wheel 626. The second hand 640, the minute hand 642, and the hour hand 646 constitute the hands 210. Referring to FIG. 1, the crown 214 is attached to the stem 632. (4) Structure of Embodiment of Charging Device of Present Invention Referring to FIGS. 25 to 27, charging device 900 includes upper case 902, lower case 904, bottom plate 906, charge control circuit 908, negative electrode terminal 910, Lead board 91
2. Solar cell 914, support shaft 916, return spring 91
8, a secondary battery 920. In the upper case 902, a window is provided at the center and a solar cell 914 having a ring shape is provided.
Place. The upper case 902 is preferably made of plastic such as ABS resin. The lower case 904 includes a charge control circuit 908, a secondary battery 920, and a negative electrode terminal 91.
0, a lead substrate 926. The upper case 902 and the lower case 904 are supported by the supporting shaft 904a of the lower case.
16 is inserted into a support shaft hole 916 a provided in the upper case 902 and is movably incorporated. A return spring 918 is incorporated in the support shaft hole 916b of the upper case. Return spring 9
Reference numeral 18 denotes a coil spring, but may be a leaf spring. The solar cell 914 arranged in the upper case 902 is
26, it is connected to the charge control circuit 908. The lead board 912 is provided with a positive electrode terminal 912 a for contacting the upper body 220 of the timepiece 200. In the charge control circuit 908, an integrated circuit 922 for performing charge control is provided over a substrate 924. Solar cell 9 to be the power source for charging
The lead substrate 912 connected to the substrate 14 is fixed to the connection pattern of the substrate 924 in a conductive manner. Negative electrode terminal 9
Reference numeral 10 is fixed to the substrate in such a manner that the contact portion 910a is movable so as to come into contact with the output pattern on the negative electrode side. A lead substrate 912 having a positive electrode is connected to the connection pattern of the substrate 924.

Referring to FIG. 28, the upper case 902 is open, and the timepiece 200 for charging can be set. When the positive electrode terminal 912a provided in the upper case 902 and the negative electrode terminal 910 provided in the lower case 904 are set to the clock 200, the upper body which is the positive electrode terminal of the clock 200 is set. 2
The back cover 226, which is an electrode terminal on the negative electrode side, comes into contact with 20. A force is always applied to the upper case 902 in the closing direction by the return spring 918.

Referring to FIG. 29 and FIG. 30, the timepiece 200 is placed on the charging device 900 of the present invention to perform charging. When the upper case 902 is closed, the positive electrode 912a provided on the upper case 902 becomes
It contacts upper body 220 forming the positive terminal of timepiece 200. The contact portion 910 a of the negative electrode terminal 910 provided on the lower case 904 contacts the back cover 226 forming the negative terminal of the timepiece 200.

Referring to FIG. 31, a secondary battery 920, which is a power storage member of charging device 900, stores the electromotive force generated in solar cell 914. The charge control circuit 908 stores the electromotive force generated in the solar cell 914 in the secondary battery 920 which is a power storage member, and adjusts the amount of stored power. The power stored in the secondary battery 920 is adjusted in voltage by a charge control circuit 908, and the positive electrode terminal 912 a provided in the upper case 902 and the negative electrode terminal 9 provided in the lower case 904 are adjusted.
10 is supplied. When the watch body 200 is placed on the charging device 900, the upper body 220 forming the positive electrode terminal of the watch body 200 and the positive electrode terminal 912a provided on the upper case 902 come into contact with each other. The contact portion 910a of the negative electrode terminal 910 provided on the lower case 904 and the back cover 226 forming the negative electrode terminal of the timepiece 200 come into contact with each other. When the clock body 200 is not placed on the charging device 900,
An electromotive force generated by a solar cell 914 is stored in a secondary battery 920, which is a power storage member of the charging device 900.
The upper body 220, which is a positive electrode terminal of the timepiece 200, is connected to the timepiece 2 via a heat conductive plate 244 and a switch spring 802.
00 is connected to a secondary battery 600 as a power storage member. The back cover 226, which is the negative terminal of the timepiece 200, is connected to the negative lead terminal 800 and the G of the booster circuit block 240.
Connected to ND (ground) pattern. The booster circuit lead terminal 216 in contact with the booster circuit block 240 connects the timepiece drive circuit 418 to the watch drive circuit 418. Clock drive circuit 41
8 contacts a negative terminal (not shown) and
Connected to 0. With this configuration, the secondary battery 600 of the timepiece 200 can be charged by receiving power supply from the charging device 900.

[0037]

The charging device of the present invention is equipped with a secondary battery as a power storage member, so that it is possible to charge the timepiece even in the absence of light.

[Brief description of the drawings]

FIG. 1 is a sectional view of an electronic timepiece used in an embodiment of the present invention.

FIG. 2 is a plan view of the electronic timepiece used in the embodiment of the present invention.

FIG. 3 is a rear plan view of a power generation block of the electronic timepiece used in the embodiment of the present invention.

FIG. 4 is an enlarged partial back plan view (part 1) of a power generation block of the electronic timepiece used in the embodiment of the present invention.

FIG. 5 is an enlarged partial rear plan view (part 2) of the power generation block of the electronic timepiece used in the embodiment of the present invention.

FIG. 6 is an enlarged partial rear plan view (part 3) of a power generation block of the electronic timepiece used in the embodiment of the present invention.

FIG. 7 is an enlarged partial rear plan view (part 4) of a power generation block of the electronic timepiece used in the embodiment of the present invention.

FIG. 8 is a partial sectional view (part 1) of a power generation block of the electronic timepiece used in the embodiment of the present invention.

FIG. 9 is a partial cross-sectional view (part 2) of the power generation block of the electronic timepiece used in the embodiment of the present invention.

FIG. 10 is a plan view of a heat conductor included in a power generation block of the electronic timepiece used in the embodiment of the present invention.

FIG. 11 is a plan view of a circuit insulating plate included in a power generation block of the electronic timepiece used in the embodiment of the present invention.

FIG. 12 is a plan view of a power generation block frame included in the power generation block of the electronic timepiece used in the embodiment of the present invention.

FIG. 13 is a plan view of a booster circuit block included in a power generation block of the electronic timepiece used in the embodiment of the present invention.

FIG. 14 is a plan view of a thermoelectric generation unit included in a power generation block of the electronic timepiece used in the embodiment of the present invention.

FIG. 15 is an enlarged view showing a circuit block of the movement, a booster circuit block, and an electrical connection between the booster circuit block and the back cover in the electronic timepiece used in the embodiment of the present invention.

FIG. 16 is a front view of a circuit lead terminal used for electrical connection between a movement circuit block and a booster circuit block in the electronic timepiece used in the embodiment of the present invention.

FIG. 17 is a diagram showing a pattern of a circuit block of a movement provided for electrical connection of a booster circuit block and a circuit arranged to be connected to the pattern in the electronic timepiece used in the embodiment of the present invention. It is an enlarged plan view of a lead terminal.

FIG. 18 is an enlarged partial sectional view of the electrical connection between the thermoelectric generator unit and the booster circuit block in the electronic timepiece used in the embodiment of the present invention.

FIG. 19 is an enlarged partial cross-sectional view showing a portion where the heat conductor is fixed to the upper body in the electronic timepiece used in the embodiment of the present invention.

FIG. 20 is an enlarged partial cross-sectional view showing a back cover, a heat conductive spacer, and a thermoelectric generator unit in the electronic timepiece used in the embodiment of the present invention.

FIG. 21 is a plan view of a heat conductive spacer of the electronic timepiece used in the embodiment of the present invention.

FIG. 22 is an enlarged partial cross-sectional view showing a part of the electronic timepiece used in the embodiment of the present invention, in which the back cover is fixed to the lower body.

FIG. 23 is a plan view of the electronic timepiece used in the embodiment of the present invention as viewed from the back cover side.

FIG. 24 is a schematic block diagram showing a driving part and a wheel train in the electronic timepiece used in the embodiment of the present invention.

FIG. 25 is a plan view of a charging device according to an embodiment of the present invention.

FIG. 26 shows an e-e of the charging device according to the embodiment of the present invention.
It is sectional drawing.

FIG. 27 shows ff of the charging device according to the embodiment of the present invention.
It is sectional drawing.

FIG. 28 is a cross-sectional view of a state where a charging device according to an embodiment of the present invention is opened.

FIG. 29 is a plan view showing a charging state of the charging device according to the embodiment of the present invention.

FIG. 30 is a cross-sectional view showing a charging state of the charging device according to the embodiment of the present invention.

FIG. 31 is a schematic block diagram showing a charging device and a timepiece according to an embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 120 first heat transfer plate 130 lead board 170 second heat transfer plate 180 thermoelectric generation unit 200 clock body 202 outer case 204 movement 206 power generation block 208 dial 210 pointer 212 center frame 214 riyuzu 216 booster circuit lead terminal 220 upper body 222 Decorative edge 224 Lower body 226 Back lid 228 Glass 240 Booster circuit block 242 Circuit insulating plate 244 Heat conductive plate 246 Power generating block frame 250 Booster circuit board 252 Booster integrated circuit 260 Capacitor 262 Tantalum capacitor 264 Diode 290 Thermal power generation unit lead terminal set screw 292 heat conductor set screw 310 power generation block set screw 320 heat conductive spacer 350 circuit block 372 back lid set screw 374, 376 packing 418 watch drive circuit 600 Secondary battery 602 Quartz crystal oscillator 610 Coil block 612 Stator 614 Rotor 616 Fifth wheel 618 Fourth wheel 620 Third wheel 622 Second wheel 624 Sun wheel 626 Hour wheel 630 Clock drive integrated circuit 632 Winding wheel 640 Second hand 642 Minute hand 646 Hour hand 800 Minus lead terminal 802 Switch spring 900 Charging device 902 Upper case 904 Lower case 906 Bottom plate 908 Charge control circuit 910 Negative electrode terminal 912 Lead substrate 914 Solar cell 916 Support shaft 918 Return spring 920 Secondary battery 922 Integrated circuit 924 Substrate 926 lead board

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) 2F002 AA03 AB02 AB03 AB04 AB06 AC01 AC03 AE00 2F082 AA00 EE02 EE03 EE05 EE06 EE08 FF01 FF04 FF05 JJ00 2F084 AA00 BB06 FF01 FF02 FF05 GG02 JJ07 5G003 A03A03A03A03A03A04

Claims (2)

[Claims] 1. A charging device for a watch in which a positive terminal of a charging device is provided in an upper case and is in contact with an upper body of the watch, and a negative terminal of the charging device is provided in a lower case and is in contact with a back cover of the watch. apparatus. 2. The electronic timepiece charging device according to claim 1, wherein a power source of the charging device is a solar cell provided on an outer periphery of the upper case.