JPS5929828B2 - portable power generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a portable power generation device that is installed and used inside a portable electronic device or the like.

Conventionally, a power generation device that is incorporated into a portable electronic device has been proposed, but this portable power generation device has a drive mechanism that uses the mainspring winding mechanism of a mechanical wristwatch that uses a metal mainspring as the power source. , and a power generation section driven by the drive mechanism.

The mainspring winding mechanism of this mechanical wristwatch can wind the mainspring at a relatively low speed and with a small force, and the above-mentioned portable power generation device that uses this mechanism requires only a small input force to drive the drive mechanism. On the other hand, the drive speed of the power generation section by the drive mechanism becomes low.

Therefore, in order to generate the power necessary to charge the charging device to a predetermined amount, the drive device must be driven for a long time.

Furthermore, only a very small portion of human power is used to drive the drive device, making it impossible to generate electricity by effectively utilizing human power.

Therefore, it is not possible to generate electricity necessary for charging a predetermined amount in a short period of time, and the complexity of having to charge a small amount every day cannot be avoided.

For this reason, the present applicant has made proposals to improve the above-mentioned drawbacks, but they are still not sufficient.

The present invention aims to provide extremely suitable means for eliminating the above-mentioned drawbacks, and proposes a portable power generation device that can efficiently generate power by operating an operating section.

Hereinafter, a preferred embodiment of the portable power generating device according to the present invention will be described in detail with reference to the drawings. FIG. 1 shows a portable power generating device 51 inside a watch body 50 of a portable electronic watch as a portable electronic device. Shows the equipped state.

The drive mechanism 52 of the portable power generation device 51 is mounted on a case back 53 attached to the watch body 50, and a key 54 serving as an external operation section is inserted into a recess 55 of the case back 53 and connected to the shaft of a gear 56. It is configured to be foldable via branches 57 as shown by solid lines and dotted lines.

In the normal state, the key 54 is folded and stored in the recess 55 of the back cover 53 in the state shown by the solid line, but is placed in a rotatable state by being pulled up to the state shown by the dotted line.

The back cover 53 has a foldable key 54 as an external operating member and a plurality of gears 5 constituting a speed increasing gear train.
8 and a driving mechanism 52 having a compressing portion 60 provided on a driving shaft 59.

Further, inside the watch body 50, a power generation section 62 having a coupling section 61 connected to the coupling section 60 of the drive mechanism 52 is provided.

This power generation section 62 has the configuration shown in FIGS. 2 and 3.

Reference numeral 1 indicates the overall configuration of a portable power generation unit, and this portable power generation unit 1 includes a drive mechanism 52, a power generation unit 62 rotationally driven by the drive mechanism 52, and a current generated by the power generation unit 62. It is configured with a rectifying device 4 that rectifies the current, and charges a secondary battery provided inside the portable electronic device described above.

The drive mechanism 52 of the portable power generator 1 has a key 54 as an external operation section that is manually operated.

This key 54 is connected to a gear 56, and when rotated, the gear 56 is rotated.

This gear 56 rotationally drives the energy storage wheel 17 in the direction of arrow B via a plurality of gears 58 forming a speed increasing gear train.

This energy storage wheel 17 includes a shaft portion 18 having a gear 19 meshing with the gear 58 and a gear 20 for preventing reverse rotation meshing with the pawl 21, and a plurality of springs 22 as energy storage members connected to the shaft portion 18. Drive gear 23 provided
It has

The drive gear 23 does not rotate until the energy stored in the spring 22 reaches a certain amount, and rotates each time the energy stored in the spring 22 reaches a certain amount using a control mechanism (not shown). controlled by.

The power generation unit 62 rotationally driven by the drive mechanism 58 includes a rotor 24 made of a permanent magnet, an annular iron core 26 arranged at a predetermined interval around the rotor 24, and a plurality of coils wound around the annular iron core 26. 27.

The rotor 24 constitutes a part of the first drive mechanism 52,
It has a gear 25 that meshes with one drive gear 23 of the energy storage wheel 17 that rotates in a stepwise manner.
It is rotationally driven by the 1 drive gear 23 of 7.

The portable power generation device 1 configured as described above uses the key 54 as an external operation unit that constitutes a part of the drive mechanism 52, and therefore can be driven to rotate extremely easily.

By strongly rotating this key 54, energy is stored in the spring 22 as an energy storage member of the energy storage wheel 17 via the gear 56 and the plurality of gears 58 constituting the speed increasing gear train, and the control mechanism (see Fig. The rotor 24 of the power generation section 62 can be rotated at an extremely high speed by the drive gear 23 whose rotation is controlled by the power generator (not shown).

Therefore, a high electromotive force is induced in the coil 27 of the power generation section 62, and it is possible to efficiently utilize human power to generate power.

Further, in the portable power generation device 1, even if the key 54 as an external operation part of the drive mechanism 2 is suddenly stopped, the key 54 and the gear 56 are interlocked by the ratchet mechanism. The plurality of gears 58 constituting the speed increasing gear train can continue to rotate for a certain period of time due to inertia, and the rotor 24 of the power generation section 62 is driven by the energy stored in the spring 22 as an energy storage member of the energy storage wheel 17. is rotated for a predetermined time.

Therefore, by rotating this key 54, a predetermined amount of power can be generated in a short time using human power, much more efficiently than in conventional power generation devices.

FIG. 3 shows another embodiment of the portable power generation device according to the present invention, and the difference from the above embodiment is that there is a centrifugal connection between the rotor of the power generation section and the shaft that drives this rotor. The point is that a clutch is provided that is connected and disconnected by force.

The power generation section 3a includes a rotor 28 made of a permanent magnet, and a plurality of coils 29 arranged around the rotor 28 at predetermined intervals.

This rotor 28, as in the previous embodiment, is provided on the output side of a clutch 32 provided on a shaft 31 having a gear 30 that meshes with a drive gear 16a of a drive mechanism having a speed-increasing gear train.

This clutch 32 is fixed to a shaft 31, and includes a drive section 33 having a plurality of clutch pieces 34 that swing as shown by the two-dot chain line due to centrifugal force, and a clutch piece 34 of the drive section 33.
It has a contact portion 36 that comes into frictional contact with the clutch piece 34 when it is swung to the position shown by the two-dot chain line, and normally separates from the clutch piece 34, and an output plate 35 that is rotatably mounted on the shaft 31. The rotor 28 is fixed to the output plate 35.

In the power generation section 3a configured in this way, when the shaft 31 and the drive section 33 of the clutch 32 provided thereon are rotated at high speed via the speed-increasing gear train of the drive mechanism, the clutch piece of the drive section 33 is rotated at high speed. 34 is swung by the centrifugal force as shown by the two-dot chain line, and the clutch piece 34 and the contact portion 36 of the output plate 35 come into frictional contact.

Therefore, the output plate 35 and the rotor 28 fixed thereto are rotated at high speed according to the rotation of the shaft 31.

Next, when the operation of the external operation part of the drive mechanism is stopped, the shaft 31 driven through the speed increasing gear train of the drive mechanism is rapidly decelerated, and this deceleration of the shaft 31 causes centrifugal force. When the value decreases to a certain value, the clutch piece 3 of the clutch 32
4 is swung as shown by the solid line, and the output plate 35 and rotor 28 continue to rotate at high speed due to inertia.

Therefore, in the power generation section 3a, power generation can be continued for a long time by rotating the key 54 of the external operation section of the drive mechanism, and the power generation efficiency can be further improved.

As described above, the portable power generation device according to the present invention includes a drive mechanism having a speed-increasing gear train and a power generation section driven by the drive mechanism, and the drive mechanism is manually operated by effectively utilizing human power. By providing an external operation section, the power generation section can be driven one rotation at high speed by operating the key, which is the external operation section, and a predetermined amount of power can be efficiently generated in a short time. If you operate the external operation part several times, you won't have to open it for several days (several months if you use the device), and the troublesome operation will be eliminated.

In addition, by providing the power generation unit with a clutch that is connected and disconnected by centrifugal force, the power generation unit can be kept rotating at high speed for a long time, and power can be generated more efficiently.This power generation device can be installed in a portable electronic device. By incorporating and using
It is possible to fully achieve the desired purpose, such as being able to operate a portable electronic device semi-permanently using the electric power generated by the power generation device.

[Brief explanation of the drawing]

The drawing shows a portable power generation device according to the invention,
Figure 1 is a partially cutaway sectional view of a portable power generator attached to a portable electronic device, Figure 2 is a plan view showing the overall configuration of the portable power generator, and Figure 3 is a diagram of the power generation section of the portable power generator. FIG. 7 is a side sectional view showing another embodiment. 50... Watch body, 51... Portable power generator, 52... Drive mechanism, 53...
Back cover, 54...key, 55...recess, 56...gear, 57...shaft support, 5
8...Gear, 59...Drive shaft, 60,
61... Coupling, 62... Power generation section, 1... Portable power generation section, 4... Rectifier, 17... Energy Accumulation car, 21...
...Claw, 22 ... Spring, 23 ... Drive gear, 24 ... Rotor, 3a ... Power generation section, 28 ... Rotor, 31...Axis, 3
2...Clutch, 33...Drive unit, 3
4...Clutch piece.

Claims (1)

[Claims] 1. A back cover provided on the watch body, a drive mechanism built into the back cover and consisting of a plurality of gears, a key connected to the gears and configured to be bendable on the outside of the back cover, and a key provided on the drive mechanism. The drive mechanism constituting the power generation device includes a drive shaft provided at one end of the drive shaft, a coupling provided at one end of the drive shaft, and a power generation section connected to the coupling and provided within the watch body. A portable power generator characterized by having a built-in device.