JP5121666B2 - Rechargeable analog watch - Google Patents

Description

  The present invention relates to a rechargeable analog wristwatch by, for example, electromagnetic induction charging.

  2. Description of the Related Art Conventionally, analog wristwatches with an electromagnetic induction charging type LED illumination function are known (see, for example, Patent Document 1). FIG. 4 shows the configuration of a conventional analog rechargeable timepiece with LED illumination. In the configuration of FIG. 4, the movement 11 is fixed to the movement holder 22, the circuit board 13 is fixed to the movement 11, the secondary coil 14 is fixed to the circuit board 13, and the secondary battery 15 is attached to the battery fixing plate 16. Fix it. Further, the outer side of the battery fixing plate 16 is fixed by the hook 2 </ b> B of the movement holder 22.

JP 2004-53342 A

  However, in the conventional analog electromagnetic induction rechargeable timepiece with LED illumination as described above, the clock drive circuit 13A, the charging circuit 13B, the LED drive circuit 13C, and the illumination LED 13D are provided on one circuit board 13. When the circuit configuration is complicated for mounting and it is desired to make the circuit board 13 as wide as possible, there is a problem in that the mechanical parts of the movement 11 are arranged in a complicated manner in the timepiece and the space is difficult to take.

  In order to attach a member for fixing the secondary coil 14 to the movement holder 22, a space for allowing the member for fixing the secondary coil 14 to escape must be provided in the circuit board 13. However, in order to add a notch, it is necessary to increase the size of the circuit board 13, and as a result, the size of the entire module increases. Therefore, since this space cannot be taken, the secondary coil 14 is temporarily fixed to the circuit board 13 with the double-sided tape 17 to be fixed. For this reason, the work efficiency was reduced during assembly. Furthermore, it is necessary to take care not to break the circuit board 13 when removing the double-sided tape 17 during maintenance, and it is necessary to re-tension the double-sided tape 17 when reassembling.

  The present invention has been made in view of the above, and it is possible to secure a component mounting area of a circuit board and increase a module size without adding a notch for releasing a hook of a movement holder to the circuit board. An object of the present invention is to improve assembly and maintenance by facilitating fixation and disassembly of the secondary coil.

  In order to solve the above-described problems and achieve the object, the invention according to claim 1 is a movement for moving a timepiece, a movement holder for fixing the movement, a circuit board, and a secondary coil. A rechargeable secondary battery and a battery fixing plate, wherein the circuit board is flush with the movement, and a part of the circuit board is fixed to the movement to drive the timepiece. And a charging circuit for charging the secondary battery by electromagnetic induction, and the circuit board has a notch shape according to the position of the outward hook of the movement holder, and the secondary coil It is fixed to the movement holder by hooks formed inward, and the hooks of this movement holder are configured with hooks facing out back to back at the same position. Is, the secondary battery and the secondary coil by the battery fixing plate, characterized in that it is fixed by the movement holder formed the outward hooks to the movement holder.

  The invention according to claim 2 is characterized in that in claim 1, an illumination function by LED light is provided.

  Further, the invention according to claim 2 is characterized in that in claim 1 or 2, it is provided with a timekeeping function such as a stopwatch, an alarm, a timer, a vibration, and a time notification function.

  The rechargeable analog wristwatch according to the present invention comprises a hook of a movement holder for temporarily fixing a secondary coil and a hook for fixing a battery fixing plate to the movement holder in the same position back to back. The mounting area of the circuit board can be secured without adding a notch for the hook release of the movement holder to the circuit board, and the structure can be configured without increasing the module size, making it easy to fix and disassemble the secondary coil. In addition, there is an effect that the assembling property and the maintenance property are improved.

  Exemplary embodiments of a rechargeable analog wristwatch according to the present invention will be explained below in detail with reference to the accompanying drawings.

(Embodiment)
FIG. 1 is an explanatory diagram showing the configuration of an analog rechargeable timepiece with LED illumination according to this embodiment. 1, reference numeral 1 is a movement, reference numeral 2 is a movement holder, reference numeral 2A is a hook, reference numeral 2B is a hook, reference numeral 3 is a circuit board, reference numeral 3A is a timepiece driving circuit, reference numeral 3B is a charging circuit, and reference numeral 3C is an LED drive. Reference numeral 3D denotes an illumination LED, reference numeral 4 denotes a secondary coil for charging, reference numeral 5 denotes a secondary battery, and reference numeral 6 denotes a battery fixing plate. In FIG. 1, the configuration of an analog timepiece using hour, minute and second hands attached to the upper part of the movement 1, the crown, an external switch, a windshield, and the like are omitted.

  As shown in FIG. 1, this analog rechargeable timepiece with LED illumination includes a movement 1 for moving the timepiece, a movement holder 2 for fixing the movement 1, a circuit board 3, a secondary coil 4, The rechargeable secondary battery 5 and the battery fixing plate 6 are configured. The movement 1 is fixed to the movement holder 2. The circuit board 3 is on the same plane as the movement 1, and a part of the circuit board 3 is fixed to the movement 1. 3A for driving the battery and a charging circuit 3B for charging the secondary battery 5 by electromagnetic induction.

  2 is an explanatory view showing the shape of the circuit board 3 in FIG. 1, and FIG. 3 is an explanatory view showing the shape of the movement holder 2 in FIG. As shown in these figures, the movement 1 is fixed to the movement holder 2, the circuit board 3 is fixed to the movement 1, the secondary coil 4 is temporarily fixed to the movement holder 2 with three hooks 2A, A structure in which the secondary battery 5 and the secondary coil for charging 4 are fixed by a battery fixing plate 6, the movement 1 is fixed by a hook formed on the movement holder 2, and the circuit board 3 includes a clock circuit 3 A, a charging circuit 3 B, An LED lighting circuit 3 </ b> C and an illumination LED 3 </ b> D are mounted, and a notch shape 3 </ b> E (see FIG. 2) is provided in accordance with the positions of the hooks 2 </ b> A and 2 </ b> B of the movement holder 2 and is fixed to the movement 1.

  The secondary coil 4 for charging is formed in a cylindrical shape so that the secondary battery 5 is in the same plane and fits in the same, and is temporarily fixed by three hooks 2A formed inwardly on the movement holder 2. Is done. A movement for fixing a battery fixing plate 6 for fixing the secondary coil for charging 4 and the secondary battery 5 to three hooks 2A of the movement holder for temporarily fixing the secondary coil for charging 4. The hook 2B of the holder 2 is configured to be back-to-back at the same position, and the charging secondary coil 4 and the secondary battery 5 are formed on the battery fixing plate 6 and the movement holder 2 by the battery fixing plate 6. It is fixed to the movement holder 2 by the outward hook 2B at the location.

  As described above, three cutout shapes 3E are provided in accordance with the position of the hook 2A of the movement holder 2 (see FIG. 2), and the secondary coil 4 for charging is hook 2A formed inwardly on the movement holder 2. The hook 2A of the movement holder 2 is formed with the hook 2B facing back to back at the same position. The charging secondary coil 4 and the secondary battery 5 are attached to the movement holder 2 by the battery fixing plate 6. It is fixed to the movement holder 2 by the formed outward hook 2B.

  That is, the secondary coil for charging 4 is fixed by the hook 2A by the hooks 2A and 2B formed on the movement holder 2, and the secondary coil for charging 4 and the secondary battery 5 are attached to the movement holder 2 by the battery fixing plate 6. Since it is configured to be fixed to the movement holder 2 by the formed outward hook 2B, in order to temporarily fix the secondary coil for charging as in the prior art, it is fixed to the circuit board with double-sided tape. On the other hand, in this embodiment, since the assembly / disassembly by the hook is possible, the conventional problem that the work efficiency has been reduced at the time of assembly can be solved. Furthermore, as previously mentioned, it is necessary to be careful not to break the circuit board when removing the double-sided tape during maintenance, or to re-attach the double-sided tape when reassembling. Although it was necessary, such a complicated operation is not necessary because of the fixing by the hook.

  Therefore, according to the above-described embodiment, the hook 2A of the movement holder 2 for temporarily fixing the secondary coil 4 for charging and the hook 2B for fixing the battery fixing plate 6 to the movement holder 2 are the same. By configuring the positions back to back, it is possible to secure a component mounting area of the circuit board 3 without adding a hook escape notch of the movement holder 2 to the circuit board 3, and without increasing the module size. The structure which can be comprised, makes it easy to fix and disassemble the secondary coil 4 for charging, and can improve assemblability and maintainability is realized.

  Moreover, the above-mentioned rechargeable timepiece with LED illumination has an illumination function by the illumination LED 3D. By depressing a switch (not shown) on the illumination LED 3D, the illumination LED 3D is turned on, and the light passes through an opening of a dial (not shown) and illuminates the outside. When the switch is further pressed, the illumination LED 3D is turned off. Note that the lighting LED 3D may not be turned off by pressing this switch, but may be automatically turned off when a certain time has elapsed after the switch operation. In this way, for example, when it is difficult to see a keyhole in a dark place, it is possible to turn on the LED drive circuit 3C by an external operation where light is required.

  Moreover, the above-mentioned rechargeable timepiece with LED illumination has a timekeeping function such as a stopwatch, an alarm, a timer, and a vibration, and a time notification function. The LED drive mode that activates additional clock functions such as stopwatch, alarm, and timer according to the external operation of a switch (not shown) is provided, adding to the function that can be further improved in a wristwatch that can perform digital display as well as analog display. Function can be enhanced.

  By the way, in the wristwatch in this example, when the battery capacity of the secondary battery 5 decreases due to use, it is placed on a charger (not shown) and charged using an electromagnetic induction method. In other words, an AC current supplied via an AC cord is passed to generate an AC magnetic field at the primary coil of the charger, an AC current is generated at the secondary coil 32 of the wristwatch by the AC magnetic field, and the current is rectified by a rectifier circuit. Then, the secondary battery 30 is charged as a DC power source.

  Since the secondary battery 5 is used as a power source, even if the battery runs out due to heavy use of LEDs, it is only necessary to charge the battery without replacing it. The lighting function can be fully used without worrying about the cost. Thereby, the fault by performing a digital display using LED with large power consumption compared with a liquid crystal panel can be eliminated.

  Here, the secondary battery 5 of the charging circuit is charged using the electromagnetic induction method, but the secondary battery 5 may be charged by connecting a solar battery or a direct power supply terminal. By providing the secondary coil 4 for charging and making it possible to charge the secondary battery 5 using the electromagnetic induction method, it is possible to easily and reliably charge without being restricted by the design and without complicating the waterproof structure. It becomes.

  As described above, the rechargeable analog wristwatch according to the present invention is useful for an analog wristwatch that displays the time by indicating the time on the dial plate with hands such as an hour hand and a minute hand, and particularly includes an LED as an illumination light source. It is suitable for an electromagnetic wristwatch of an electromagnetic dielectric charge type having an LED display function.

It is explanatory drawing which shows the structure of the analog rechargeable timepiece with LED lighting concerning this embodiment. It is explanatory drawing which shows the shape of the circuit board in FIG. FIG. 3 is an explanatory view showing the shape of the movement holder in FIG. It is explanatory drawing which shows the structure of the analog chargeable timepiece with LED illumination in the past.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Movement 2 Movement holder 2A, 2B Hook 3 Circuit board 3B Charging circuit 3D LED for illumination
3E Notch shape 4 Secondary coil for charging 5 Secondary battery 6 Battery fixing plate

Claims (3)

A movement for moving the timepiece, a movement holder for fixing the movement, a circuit board, a secondary coil, a rechargeable secondary battery, and a battery fixing plate,
The circuit board is in the same plane as the movement, and a part of the circuit board is fixed to the movement, and includes a timepiece driving circuit for driving a timepiece and a charging circuit for charging a secondary battery by electromagnetic induction. Prepared,
The circuit board has a cutout shape in accordance with the position of the outward hook of the movement holder, and the secondary coil is fixed by an inwardly formed hook on the movement holder. Are configured such that hooks are formed outward and back-to-back at the same position, and the secondary coil and the secondary battery are fixed to the movement holder by the battery-fixing plate and the outward hook formed on the movement holder. Rechargeable analog watch.   The rechargeable analog wristwatch according to claim 1, further comprising an illumination function using LED light.   The rechargeable analog wristwatch according to claim 1, further comprising a timekeeping function such as a stopwatch, an alarm, a timer, and a vibration, and a time notification function.

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